]>
Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
fb34365b | 3 | 2009, 2010 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. | |
32ca9640 | 6 | Largely rewritten by Alan Modra. |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 58 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
63 | #define ELF_ARCH bfd_arch_powerpc | |
64 | #define ELF_MACHINE_CODE EM_PPC64 | |
65 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
68 | ||
69 | #define elf_backend_want_got_sym 0 | |
70 | #define elf_backend_want_plt_sym 0 | |
71 | #define elf_backend_plt_alignment 3 | |
72 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
75 | #define elf_backend_can_refcount 1 | |
76 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 78 | |
e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
87 | |
88 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 95 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 99 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 100 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
101 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
102 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
103 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
104 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
105 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
106 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 107 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 108 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
109 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
110 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
111 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
112 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 113 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 114 | #define elf_backend_special_sections ppc64_elf_special_sections |
e054468f | 115 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
ad8e1ba5 | 116 | |
5bd4f169 AM |
117 | /* The name of the dynamic interpreter. This is put in the .interp |
118 | section. */ | |
119 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
120 | ||
121 | /* The size in bytes of an entry in the procedure linkage table. */ | |
122 | #define PLT_ENTRY_SIZE 24 | |
123 | ||
124 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 125 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
126 | |
127 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
128 | #define TOC_BASE_OFF 0x8000 |
129 | ||
130 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
131 | #define TP_OFFSET 0x7000 | |
132 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 133 | |
ad8e1ba5 AM |
134 | /* .plt call stub instructions. The normal stub is like this, but |
135 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 136 | insert an addi to adjust r12. */ |
ad8e1ba5 | 137 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
138 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
139 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
140 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 141 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 142 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
143 | /* ld %r11,xxx+16@l(%r12) */ |
144 | #define BCTR 0x4e800420 /* bctr */ | |
145 | ||
5d1634d7 | 146 | |
ee4bf8d2 | 147 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 148 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
149 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
150 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
151 | ||
ac2df442 AM |
152 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
153 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
154 | ||
ad8e1ba5 AM |
155 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
156 | ||
ee4bf8d2 | 157 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 158 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
159 | /* 0: */ |
160 | /* .quad plt0-1f */ | |
161 | /* __glink: */ | |
162 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
163 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
164 | /* 1: */ | |
165 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
166 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
167 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
168 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
169 | /* ld %11,0(%12) */ | |
170 | /* ld %2,8(%12) */ | |
171 | /* mtctr %11 */ | |
172 | /* ld %11,16(%12) */ | |
173 | /* bctr */ | |
5d1634d7 AM |
174 | |
175 | /* Pad with this. */ | |
176 | #define NOP 0x60000000 | |
177 | ||
721956f4 AM |
178 | /* Some other nops. */ |
179 | #define CROR_151515 0x4def7b82 | |
180 | #define CROR_313131 0x4ffffb82 | |
181 | ||
cedb70c5 | 182 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
183 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
184 | #define B_DOT 0x48000000 /* b . */ | |
185 | ||
186 | /* After that, we need two instructions to load the index, followed by | |
187 | a branch. */ | |
188 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 189 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 190 | |
deb0e272 AM |
191 | /* Instructions used by the save and restore reg functions. */ |
192 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
193 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
194 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
195 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
196 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
197 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
198 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
199 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
200 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
201 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
202 | #define BLR 0x4e800020 /* blr */ |
203 | ||
41bd81ab AM |
204 | /* Since .opd is an array of descriptors and each entry will end up |
205 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
206 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 207 | relocate .opd without reloc entries. */ |
41bd81ab AM |
208 | #ifndef NO_OPD_RELOCS |
209 | #define NO_OPD_RELOCS 0 | |
210 | #endif | |
5bd4f169 | 211 | \f |
f5e87a1d | 212 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 213 | |
5bd4f169 | 214 | /* Relocation HOWTO's. */ |
04c9666a | 215 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
216 | |
217 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
218 | /* This reloc does nothing. */ | |
219 | HOWTO (R_PPC64_NONE, /* type */ | |
220 | 0, /* rightshift */ | |
411e1bfb AM |
221 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
222 | 32, /* bitsize */ | |
b34976b6 | 223 | FALSE, /* pc_relative */ |
5bd4f169 | 224 | 0, /* bitpos */ |
f5e87a1d | 225 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
226 | bfd_elf_generic_reloc, /* special_function */ |
227 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 228 | FALSE, /* partial_inplace */ |
d006db6c | 229 | 0, /* src_mask */ |
5bd4f169 | 230 | 0, /* dst_mask */ |
b34976b6 | 231 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
232 | |
233 | /* A standard 32 bit relocation. */ | |
234 | HOWTO (R_PPC64_ADDR32, /* type */ | |
235 | 0, /* rightshift */ | |
236 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
237 | 32, /* bitsize */ | |
b34976b6 | 238 | FALSE, /* pc_relative */ |
5bd4f169 AM |
239 | 0, /* bitpos */ |
240 | complain_overflow_bitfield, /* complain_on_overflow */ | |
241 | bfd_elf_generic_reloc, /* special_function */ | |
242 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 243 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
244 | 0, /* src_mask */ |
245 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 246 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
247 | |
248 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
249 | FIXME: we don't check that, we just clear them. */ | |
250 | HOWTO (R_PPC64_ADDR24, /* type */ | |
251 | 0, /* rightshift */ | |
252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
253 | 26, /* bitsize */ | |
b34976b6 | 254 | FALSE, /* pc_relative */ |
5bd4f169 AM |
255 | 0, /* bitpos */ |
256 | complain_overflow_bitfield, /* complain_on_overflow */ | |
257 | bfd_elf_generic_reloc, /* special_function */ | |
258 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 259 | FALSE, /* partial_inplace */ |
d006db6c | 260 | 0, /* src_mask */ |
f5e87a1d | 261 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 262 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
263 | |
264 | /* A standard 16 bit relocation. */ | |
265 | HOWTO (R_PPC64_ADDR16, /* type */ | |
266 | 0, /* rightshift */ | |
267 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
268 | 16, /* bitsize */ | |
b34976b6 | 269 | FALSE, /* pc_relative */ |
5bd4f169 AM |
270 | 0, /* bitpos */ |
271 | complain_overflow_bitfield, /* complain_on_overflow */ | |
272 | bfd_elf_generic_reloc, /* special_function */ | |
273 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 274 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
275 | 0, /* src_mask */ |
276 | 0xffff, /* dst_mask */ | |
b34976b6 | 277 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
278 | |
279 | /* A 16 bit relocation without overflow. */ | |
280 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
281 | 0, /* rightshift */ | |
282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
283 | 16, /* bitsize */ | |
b34976b6 | 284 | FALSE, /* pc_relative */ |
5bd4f169 AM |
285 | 0, /* bitpos */ |
286 | complain_overflow_dont,/* complain_on_overflow */ | |
287 | bfd_elf_generic_reloc, /* special_function */ | |
288 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 289 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
290 | 0, /* src_mask */ |
291 | 0xffff, /* dst_mask */ | |
b34976b6 | 292 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
293 | |
294 | /* Bits 16-31 of an address. */ | |
295 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
296 | 16, /* rightshift */ | |
297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
298 | 16, /* bitsize */ | |
b34976b6 | 299 | FALSE, /* pc_relative */ |
5bd4f169 AM |
300 | 0, /* bitpos */ |
301 | complain_overflow_dont, /* complain_on_overflow */ | |
302 | bfd_elf_generic_reloc, /* special_function */ | |
303 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 304 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
305 | 0, /* src_mask */ |
306 | 0xffff, /* dst_mask */ | |
b34976b6 | 307 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
308 | |
309 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
310 | bits, treated as a signed number, is negative. */ | |
311 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
312 | 16, /* rightshift */ | |
313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
314 | 16, /* bitsize */ | |
b34976b6 | 315 | FALSE, /* pc_relative */ |
5bd4f169 AM |
316 | 0, /* bitpos */ |
317 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 318 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 319 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 320 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
321 | 0, /* src_mask */ |
322 | 0xffff, /* dst_mask */ | |
b34976b6 | 323 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
324 | |
325 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
326 | FIXME: we don't check that, we just clear them. */ | |
327 | HOWTO (R_PPC64_ADDR14, /* type */ | |
328 | 0, /* rightshift */ | |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 16, /* bitsize */ | |
b34976b6 | 331 | FALSE, /* pc_relative */ |
5bd4f169 AM |
332 | 0, /* bitpos */ |
333 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 334 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 335 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 336 | FALSE, /* partial_inplace */ |
d006db6c | 337 | 0, /* src_mask */ |
f5e87a1d | 338 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 339 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
340 | |
341 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
342 | indicate that the branch is expected to be taken. The lower two | |
343 | bits must be zero. */ | |
344 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
345 | 0, /* rightshift */ | |
346 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
347 | 16, /* bitsize */ | |
b34976b6 | 348 | FALSE, /* pc_relative */ |
5bd4f169 AM |
349 | 0, /* bitpos */ |
350 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 351 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 352 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 353 | FALSE, /* partial_inplace */ |
d006db6c | 354 | 0, /* src_mask */ |
f5e87a1d | 355 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 356 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
357 | |
358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
359 | indicate that the branch is not expected to be taken. The lower | |
360 | two bits must be zero. */ | |
361 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
362 | 0, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 16, /* bitsize */ | |
b34976b6 | 365 | FALSE, /* pc_relative */ |
5bd4f169 AM |
366 | 0, /* bitpos */ |
367 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 368 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 369 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 370 | FALSE, /* partial_inplace */ |
d006db6c | 371 | 0, /* src_mask */ |
f5e87a1d | 372 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 373 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
374 | |
375 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
376 | HOWTO (R_PPC64_REL24, /* type */ | |
377 | 0, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 26, /* bitsize */ | |
b34976b6 | 380 | TRUE, /* pc_relative */ |
5bd4f169 AM |
381 | 0, /* bitpos */ |
382 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 383 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 384 | "R_PPC64_REL24", /* name */ |
b34976b6 | 385 | FALSE, /* partial_inplace */ |
d006db6c | 386 | 0, /* src_mask */ |
f5e87a1d | 387 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 388 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
389 | |
390 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
391 | HOWTO (R_PPC64_REL14, /* type */ | |
392 | 0, /* rightshift */ | |
393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
394 | 16, /* bitsize */ | |
b34976b6 | 395 | TRUE, /* pc_relative */ |
5bd4f169 AM |
396 | 0, /* bitpos */ |
397 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 398 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 399 | "R_PPC64_REL14", /* name */ |
b34976b6 | 400 | FALSE, /* partial_inplace */ |
d006db6c | 401 | 0, /* src_mask */ |
f5e87a1d | 402 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 403 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
404 | |
405 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
406 | the branch is expected to be taken. The lower two bits must be | |
407 | zero. */ | |
408 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 16, /* bitsize */ | |
b34976b6 | 412 | TRUE, /* pc_relative */ |
5bd4f169 AM |
413 | 0, /* bitpos */ |
414 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 415 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 416 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 417 | FALSE, /* partial_inplace */ |
d006db6c | 418 | 0, /* src_mask */ |
f5e87a1d | 419 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 420 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
421 | |
422 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
423 | the branch is not expected to be taken. The lower two bits must | |
424 | be zero. */ | |
425 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
426 | 0, /* rightshift */ | |
427 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
428 | 16, /* bitsize */ | |
b34976b6 | 429 | TRUE, /* pc_relative */ |
5bd4f169 AM |
430 | 0, /* bitpos */ |
431 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 432 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 433 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 434 | FALSE, /* partial_inplace */ |
d006db6c | 435 | 0, /* src_mask */ |
f5e87a1d | 436 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 437 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
438 | |
439 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
440 | symbol. */ | |
441 | HOWTO (R_PPC64_GOT16, /* type */ | |
442 | 0, /* rightshift */ | |
443 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
444 | 16, /* bitsize */ | |
b34976b6 | 445 | FALSE, /* pc_relative */ |
5bd4f169 AM |
446 | 0, /* bitpos */ |
447 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 448 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 449 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 450 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
451 | 0, /* src_mask */ |
452 | 0xffff, /* dst_mask */ | |
b34976b6 | 453 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
454 | |
455 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
456 | the symbol. */ | |
457 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
458 | 0, /* rightshift */ | |
459 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
460 | 16, /* bitsize */ | |
b34976b6 | 461 | FALSE, /* pc_relative */ |
5bd4f169 AM |
462 | 0, /* bitpos */ |
463 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 464 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 465 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 466 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
467 | 0, /* src_mask */ |
468 | 0xffff, /* dst_mask */ | |
b34976b6 | 469 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
470 | |
471 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
472 | the symbol. */ | |
473 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
474 | 16, /* rightshift */ | |
475 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
476 | 16, /* bitsize */ | |
b34976b6 | 477 | FALSE, /* pc_relative */ |
5bd4f169 AM |
478 | 0, /* bitpos */ |
479 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 480 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 481 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 482 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
483 | 0, /* src_mask */ |
484 | 0xffff, /* dst_mask */ | |
b34976b6 | 485 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
486 | |
487 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
488 | the symbol. */ | |
489 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
490 | 16, /* rightshift */ | |
491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
492 | 16, /* bitsize */ | |
b34976b6 | 493 | FALSE, /* pc_relative */ |
5bd4f169 AM |
494 | 0, /* bitpos */ |
495 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 496 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 497 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 498 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
499 | 0, /* src_mask */ |
500 | 0xffff, /* dst_mask */ | |
b34976b6 | 501 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
502 | |
503 | /* This is used only by the dynamic linker. The symbol should exist | |
504 | both in the object being run and in some shared library. The | |
505 | dynamic linker copies the data addressed by the symbol from the | |
506 | shared library into the object, because the object being | |
507 | run has to have the data at some particular address. */ | |
508 | HOWTO (R_PPC64_COPY, /* type */ | |
509 | 0, /* rightshift */ | |
f5e87a1d AM |
510 | 0, /* this one is variable size */ |
511 | 0, /* bitsize */ | |
b34976b6 | 512 | FALSE, /* pc_relative */ |
5bd4f169 | 513 | 0, /* bitpos */ |
f5e87a1d AM |
514 | complain_overflow_dont, /* complain_on_overflow */ |
515 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 516 | "R_PPC64_COPY", /* name */ |
b34976b6 | 517 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
518 | 0, /* src_mask */ |
519 | 0, /* dst_mask */ | |
b34976b6 | 520 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
521 | |
522 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
523 | entries. */ | |
524 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
525 | 0, /* rightshift */ | |
526 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
527 | 64, /* bitsize */ | |
b34976b6 | 528 | FALSE, /* pc_relative */ |
5bd4f169 AM |
529 | 0, /* bitpos */ |
530 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 531 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 532 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 533 | FALSE, /* partial_inplace */ |
5bd4f169 | 534 | 0, /* src_mask */ |
f5e87a1d | 535 | ONES (64), /* dst_mask */ |
b34976b6 | 536 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
537 | |
538 | /* Created by the link editor. Marks a procedure linkage table | |
539 | entry for a symbol. */ | |
540 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 0, /* bitsize */ | |
b34976b6 | 544 | FALSE, /* pc_relative */ |
5bd4f169 AM |
545 | 0, /* bitpos */ |
546 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 547 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 548 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
550 | 0, /* src_mask */ |
551 | 0, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
553 | |
554 | /* Used only by the dynamic linker. When the object is run, this | |
555 | doubleword64 is set to the load address of the object, plus the | |
556 | addend. */ | |
557 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
560 | 64, /* bitsize */ | |
b34976b6 | 561 | FALSE, /* pc_relative */ |
5bd4f169 AM |
562 | 0, /* bitpos */ |
563 | complain_overflow_dont, /* complain_on_overflow */ | |
564 | bfd_elf_generic_reloc, /* special_function */ | |
565 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 566 | FALSE, /* partial_inplace */ |
5bd4f169 | 567 | 0, /* src_mask */ |
f5e87a1d | 568 | ONES (64), /* dst_mask */ |
b34976b6 | 569 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
570 | |
571 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
572 | HOWTO (R_PPC64_UADDR32, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 32, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
5bd4f169 AM |
577 | 0, /* bitpos */ |
578 | complain_overflow_bitfield, /* complain_on_overflow */ | |
579 | bfd_elf_generic_reloc, /* special_function */ | |
580 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
582 | 0, /* src_mask */ |
583 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
585 | |
586 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
587 | HOWTO (R_PPC64_UADDR16, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
590 | 16, /* bitsize */ | |
b34976b6 | 591 | FALSE, /* pc_relative */ |
5bd4f169 AM |
592 | 0, /* bitpos */ |
593 | complain_overflow_bitfield, /* complain_on_overflow */ | |
594 | bfd_elf_generic_reloc, /* special_function */ | |
595 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 596 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
597 | 0, /* src_mask */ |
598 | 0xffff, /* dst_mask */ | |
b34976b6 | 599 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
600 | |
601 | /* 32-bit PC relative. */ | |
602 | HOWTO (R_PPC64_REL32, /* type */ | |
603 | 0, /* rightshift */ | |
604 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
605 | 32, /* bitsize */ | |
b34976b6 | 606 | TRUE, /* pc_relative */ |
5bd4f169 | 607 | 0, /* bitpos */ |
cedb70c5 | 608 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
609 | complain_overflow_signed, /* complain_on_overflow */ |
610 | bfd_elf_generic_reloc, /* special_function */ | |
611 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 612 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
613 | 0, /* src_mask */ |
614 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 615 | TRUE), /* pcrel_offset */ |
5bd4f169 | 616 | |
10ed1bba | 617 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
618 | HOWTO (R_PPC64_PLT32, /* type */ |
619 | 0, /* rightshift */ | |
620 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 32, /* bitsize */ | |
b34976b6 | 622 | FALSE, /* pc_relative */ |
5bd4f169 AM |
623 | 0, /* bitpos */ |
624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 625 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 626 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 627 | FALSE, /* partial_inplace */ |
5bd4f169 | 628 | 0, /* src_mask */ |
f5e87a1d | 629 | 0xffffffff, /* dst_mask */ |
b34976b6 | 630 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
631 | |
632 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
633 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
634 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
635 | 0, /* rightshift */ | |
636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
637 | 32, /* bitsize */ | |
b34976b6 | 638 | TRUE, /* pc_relative */ |
5bd4f169 AM |
639 | 0, /* bitpos */ |
640 | complain_overflow_signed, /* complain_on_overflow */ | |
641 | bfd_elf_generic_reloc, /* special_function */ | |
642 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 643 | FALSE, /* partial_inplace */ |
5bd4f169 | 644 | 0, /* src_mask */ |
f5e87a1d | 645 | 0xffffffff, /* dst_mask */ |
b34976b6 | 646 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
647 | |
648 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
649 | the symbol. */ | |
650 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
653 | 16, /* bitsize */ | |
b34976b6 | 654 | FALSE, /* pc_relative */ |
5bd4f169 AM |
655 | 0, /* bitpos */ |
656 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 657 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 658 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 659 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
660 | 0, /* src_mask */ |
661 | 0xffff, /* dst_mask */ | |
b34976b6 | 662 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
663 | |
664 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
665 | the symbol. */ | |
666 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
667 | 16, /* rightshift */ | |
668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
669 | 16, /* bitsize */ | |
b34976b6 | 670 | FALSE, /* pc_relative */ |
5bd4f169 AM |
671 | 0, /* bitpos */ |
672 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 673 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 674 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 675 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
676 | 0, /* src_mask */ |
677 | 0xffff, /* dst_mask */ | |
b34976b6 | 678 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
679 | |
680 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
681 | the symbol. */ | |
682 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
683 | 16, /* rightshift */ | |
684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
685 | 16, /* bitsize */ | |
b34976b6 | 686 | FALSE, /* pc_relative */ |
5bd4f169 AM |
687 | 0, /* bitpos */ |
688 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 689 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 690 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 691 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
692 | 0, /* src_mask */ |
693 | 0xffff, /* dst_mask */ | |
b34976b6 | 694 | FALSE), /* pcrel_offset */ |
5bd4f169 | 695 | |
c061c2d8 | 696 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
697 | HOWTO (R_PPC64_SECTOFF, /* type */ |
698 | 0, /* rightshift */ | |
c061c2d8 AM |
699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
700 | 16, /* bitsize */ | |
b34976b6 | 701 | FALSE, /* pc_relative */ |
5bd4f169 AM |
702 | 0, /* bitpos */ |
703 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 704 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 705 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 706 | FALSE, /* partial_inplace */ |
5bd4f169 | 707 | 0, /* src_mask */ |
c061c2d8 | 708 | 0xffff, /* dst_mask */ |
b34976b6 | 709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 710 | |
c061c2d8 | 711 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
712 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
713 | 0, /* rightshift */ | |
714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
715 | 16, /* bitsize */ | |
b34976b6 | 716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
717 | 0, /* bitpos */ |
718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 719 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 720 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 721 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
722 | 0, /* src_mask */ |
723 | 0xffff, /* dst_mask */ | |
b34976b6 | 724 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
725 | |
726 | /* 16-bit upper half section relative relocation. */ | |
727 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
728 | 16, /* rightshift */ | |
729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
730 | 16, /* bitsize */ | |
b34976b6 | 731 | FALSE, /* pc_relative */ |
5bd4f169 AM |
732 | 0, /* bitpos */ |
733 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 734 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 735 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 736 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
737 | 0, /* src_mask */ |
738 | 0xffff, /* dst_mask */ | |
b34976b6 | 739 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
740 | |
741 | /* 16-bit upper half adjusted section relative relocation. */ | |
742 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
743 | 16, /* rightshift */ | |
744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
745 | 16, /* bitsize */ | |
b34976b6 | 746 | FALSE, /* pc_relative */ |
5bd4f169 AM |
747 | 0, /* bitpos */ |
748 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 749 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 750 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 751 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
752 | 0, /* src_mask */ |
753 | 0xffff, /* dst_mask */ | |
b34976b6 | 754 | FALSE), /* pcrel_offset */ |
5bd4f169 | 755 | |
04c9666a AM |
756 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
757 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
758 | 2, /* rightshift */ |
759 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
760 | 30, /* bitsize */ | |
b34976b6 | 761 | TRUE, /* pc_relative */ |
5bd4f169 AM |
762 | 0, /* bitpos */ |
763 | complain_overflow_dont, /* complain_on_overflow */ | |
764 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 765 | "R_PPC64_REL30", /* name */ |
b34976b6 | 766 | FALSE, /* partial_inplace */ |
d006db6c | 767 | 0, /* src_mask */ |
5bd4f169 | 768 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 769 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
770 | |
771 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
772 | ||
773 | /* A standard 64-bit relocation. */ | |
774 | HOWTO (R_PPC64_ADDR64, /* type */ | |
775 | 0, /* rightshift */ | |
776 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
777 | 64, /* bitsize */ | |
b34976b6 | 778 | FALSE, /* pc_relative */ |
5bd4f169 AM |
779 | 0, /* bitpos */ |
780 | complain_overflow_dont, /* complain_on_overflow */ | |
781 | bfd_elf_generic_reloc, /* special_function */ | |
782 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 783 | FALSE, /* partial_inplace */ |
5bd4f169 | 784 | 0, /* src_mask */ |
f5e87a1d | 785 | ONES (64), /* dst_mask */ |
b34976b6 | 786 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
787 | |
788 | /* The bits 32-47 of an address. */ | |
789 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
790 | 32, /* rightshift */ | |
791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
792 | 16, /* bitsize */ | |
b34976b6 | 793 | FALSE, /* pc_relative */ |
5bd4f169 AM |
794 | 0, /* bitpos */ |
795 | complain_overflow_dont, /* complain_on_overflow */ | |
796 | bfd_elf_generic_reloc, /* special_function */ | |
797 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 798 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
799 | 0, /* src_mask */ |
800 | 0xffff, /* dst_mask */ | |
b34976b6 | 801 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
802 | |
803 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
804 | 16 bits, treated as a signed number, is negative. */ | |
805 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
806 | 32, /* rightshift */ | |
807 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
808 | 16, /* bitsize */ | |
b34976b6 | 809 | FALSE, /* pc_relative */ |
5bd4f169 AM |
810 | 0, /* bitpos */ |
811 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 812 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 813 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 814 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
815 | 0, /* src_mask */ |
816 | 0xffff, /* dst_mask */ | |
b34976b6 | 817 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
818 | |
819 | /* The bits 48-63 of an address. */ | |
820 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
821 | 48, /* rightshift */ | |
822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
823 | 16, /* bitsize */ | |
b34976b6 | 824 | FALSE, /* pc_relative */ |
5bd4f169 AM |
825 | 0, /* bitpos */ |
826 | complain_overflow_dont, /* complain_on_overflow */ | |
827 | bfd_elf_generic_reloc, /* special_function */ | |
828 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 829 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
830 | 0, /* src_mask */ |
831 | 0xffff, /* dst_mask */ | |
b34976b6 | 832 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
833 | |
834 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
835 | 16 bits, treated as a signed number, is negative. */ | |
836 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
837 | 48, /* rightshift */ | |
838 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
839 | 16, /* bitsize */ | |
b34976b6 | 840 | FALSE, /* pc_relative */ |
5bd4f169 AM |
841 | 0, /* bitpos */ |
842 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 843 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 844 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 845 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
846 | 0, /* src_mask */ |
847 | 0xffff, /* dst_mask */ | |
b34976b6 | 848 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
849 | |
850 | /* Like ADDR64, but may be unaligned. */ | |
851 | HOWTO (R_PPC64_UADDR64, /* type */ | |
852 | 0, /* rightshift */ | |
853 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
854 | 64, /* bitsize */ | |
b34976b6 | 855 | FALSE, /* pc_relative */ |
5bd4f169 AM |
856 | 0, /* bitpos */ |
857 | complain_overflow_dont, /* complain_on_overflow */ | |
858 | bfd_elf_generic_reloc, /* special_function */ | |
859 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 860 | FALSE, /* partial_inplace */ |
5bd4f169 | 861 | 0, /* src_mask */ |
f5e87a1d | 862 | ONES (64), /* dst_mask */ |
b34976b6 | 863 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
864 | |
865 | /* 64-bit relative relocation. */ | |
866 | HOWTO (R_PPC64_REL64, /* type */ | |
867 | 0, /* rightshift */ | |
868 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
869 | 64, /* bitsize */ | |
b34976b6 | 870 | TRUE, /* pc_relative */ |
5bd4f169 AM |
871 | 0, /* bitpos */ |
872 | complain_overflow_dont, /* complain_on_overflow */ | |
873 | bfd_elf_generic_reloc, /* special_function */ | |
874 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 875 | FALSE, /* partial_inplace */ |
5bd4f169 | 876 | 0, /* src_mask */ |
f5e87a1d | 877 | ONES (64), /* dst_mask */ |
b34976b6 | 878 | TRUE), /* pcrel_offset */ |
5bd4f169 | 879 | |
cedb70c5 | 880 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
881 | HOWTO (R_PPC64_PLT64, /* type */ |
882 | 0, /* rightshift */ | |
883 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
884 | 64, /* bitsize */ | |
b34976b6 | 885 | FALSE, /* pc_relative */ |
5bd4f169 AM |
886 | 0, /* bitpos */ |
887 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 888 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 889 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 890 | FALSE, /* partial_inplace */ |
5bd4f169 | 891 | 0, /* src_mask */ |
f5e87a1d | 892 | ONES (64), /* dst_mask */ |
b34976b6 | 893 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
894 | |
895 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
896 | table. */ | |
897 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
898 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
899 | 0, /* rightshift */ | |
900 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
901 | 64, /* bitsize */ | |
b34976b6 | 902 | TRUE, /* pc_relative */ |
5bd4f169 AM |
903 | 0, /* bitpos */ |
904 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 905 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 906 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 907 | FALSE, /* partial_inplace */ |
5bd4f169 | 908 | 0, /* src_mask */ |
f5e87a1d | 909 | ONES (64), /* dst_mask */ |
b34976b6 | 910 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
911 | |
912 | /* 16 bit TOC-relative relocation. */ | |
913 | ||
914 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
915 | HOWTO (R_PPC64_TOC16, /* type */ | |
916 | 0, /* rightshift */ | |
917 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
918 | 16, /* bitsize */ | |
b34976b6 | 919 | FALSE, /* pc_relative */ |
5bd4f169 AM |
920 | 0, /* bitpos */ |
921 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 922 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 923 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 924 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
925 | 0, /* src_mask */ |
926 | 0xffff, /* dst_mask */ | |
b34976b6 | 927 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
928 | |
929 | /* 16 bit TOC-relative relocation without overflow. */ | |
930 | ||
931 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
932 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
933 | 0, /* rightshift */ | |
934 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
935 | 16, /* bitsize */ | |
b34976b6 | 936 | FALSE, /* pc_relative */ |
5bd4f169 AM |
937 | 0, /* bitpos */ |
938 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 939 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 940 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 941 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
942 | 0, /* src_mask */ |
943 | 0xffff, /* dst_mask */ | |
b34976b6 | 944 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
945 | |
946 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
947 | ||
948 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
949 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
950 | 16, /* rightshift */ | |
951 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
952 | 16, /* bitsize */ | |
b34976b6 | 953 | FALSE, /* pc_relative */ |
5bd4f169 AM |
954 | 0, /* bitpos */ |
955 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 956 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 957 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 958 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
959 | 0, /* src_mask */ |
960 | 0xffff, /* dst_mask */ | |
b34976b6 | 961 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
962 | |
963 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
964 | contents of the low 16 bits, treated as a signed number, is | |
965 | negative. */ | |
966 | ||
967 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
968 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
969 | 16, /* rightshift */ | |
970 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
971 | 16, /* bitsize */ | |
b34976b6 | 972 | FALSE, /* pc_relative */ |
5bd4f169 AM |
973 | 0, /* bitpos */ |
974 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 975 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 976 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 977 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
978 | 0, /* src_mask */ |
979 | 0xffff, /* dst_mask */ | |
b34976b6 | 980 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
981 | |
982 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
983 | ||
984 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
985 | HOWTO (R_PPC64_TOC, /* type */ | |
986 | 0, /* rightshift */ | |
987 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
988 | 64, /* bitsize */ | |
b34976b6 | 989 | FALSE, /* pc_relative */ |
5bd4f169 AM |
990 | 0, /* bitpos */ |
991 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 992 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 993 | "R_PPC64_TOC", /* name */ |
b34976b6 | 994 | FALSE, /* partial_inplace */ |
5bd4f169 | 995 | 0, /* src_mask */ |
f5e87a1d | 996 | ONES (64), /* dst_mask */ |
b34976b6 | 997 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
998 | |
999 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1000 | value to relocate may (!) refer to a PLT entry which the link | |
1001 | editor (a) may replace with the symbol value. If the link editor | |
1002 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1003 | entry and store the address to the new PLT entry in the GOT. | |
1004 | This permits lazy resolution of function symbols at run time. | |
1005 | The link editor may also skip all of this and just (c) emit a | |
1006 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1007 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1008 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1009 | 0, /* rightshift */ | |
1010 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1011 | 16, /* bitsize */ | |
b34976b6 | 1012 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1013 | 0, /* bitpos */ |
1014 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1015 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1016 | "R_PPC64_PLTGOT16", /* name */ |
1017 | FALSE, /* partial_inplace */ | |
1018 | 0, /* src_mask */ | |
1019 | 0xffff, /* dst_mask */ | |
1020 | FALSE), /* pcrel_offset */ | |
1021 | ||
1022 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1023 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1024 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1025 | 0, /* rightshift */ | |
1026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1027 | 16, /* bitsize */ | |
1028 | FALSE, /* pc_relative */ | |
1029 | 0, /* bitpos */ | |
1030 | complain_overflow_dont, /* complain_on_overflow */ | |
1031 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1032 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1033 | FALSE, /* partial_inplace */ | |
1034 | 0, /* src_mask */ | |
1035 | 0xffff, /* dst_mask */ | |
1036 | FALSE), /* pcrel_offset */ | |
1037 | ||
1038 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1039 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1040 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1041 | 16, /* rightshift */ | |
1042 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 16, /* bitsize */ | |
1044 | FALSE, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont, /* complain_on_overflow */ | |
1047 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1048 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1049 | FALSE, /* partial_inplace */ | |
1050 | 0, /* src_mask */ | |
1051 | 0xffff, /* dst_mask */ | |
1052 | FALSE), /* pcrel_offset */ | |
1053 | ||
1054 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1055 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1056 | is negative. */ | |
1057 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1058 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1059 | 16, /* rightshift */ | |
1060 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 16, /* bitsize */ | |
1062 | FALSE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont,/* complain_on_overflow */ | |
1065 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1066 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0, /* src_mask */ | |
1069 | 0xffff, /* dst_mask */ | |
1070 | FALSE), /* pcrel_offset */ | |
1071 | ||
1072 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1073 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1074 | 0, /* rightshift */ | |
1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 16, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
1081 | "R_PPC64_ADDR16_DS", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0, /* src_mask */ | |
1084 | 0xfffc, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | ||
1087 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1088 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1089 | 0, /* rightshift */ | |
1090 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1091 | 16, /* bitsize */ | |
1092 | FALSE, /* pc_relative */ | |
1093 | 0, /* bitpos */ | |
1094 | complain_overflow_dont,/* complain_on_overflow */ | |
1095 | bfd_elf_generic_reloc, /* special_function */ | |
1096 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1097 | FALSE, /* partial_inplace */ | |
1098 | 0, /* src_mask */ | |
1099 | 0xfffc, /* dst_mask */ | |
1100 | FALSE), /* pcrel_offset */ | |
1101 | ||
1102 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1103 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 16, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_signed, /* complain_on_overflow */ | |
1110 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1111 | "R_PPC64_GOT16_DS", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0, /* src_mask */ | |
1114 | 0xfffc, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1118 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1119 | 0, /* rightshift */ | |
1120 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 16, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_dont, /* complain_on_overflow */ | |
1125 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1126 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0, /* src_mask */ | |
1129 | 0xfffc, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1133 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 16, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont, /* complain_on_overflow */ | |
1140 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1141 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0, /* src_mask */ | |
1144 | 0xfffc, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1148 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1149 | 0, /* rightshift */ | |
1150 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 16, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1155 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1156 | "R_PPC64_SECTOFF_DS", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0, /* src_mask */ | |
1159 | 0xfffc, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1163 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1164 | 0, /* rightshift */ | |
1165 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 16, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont, /* complain_on_overflow */ | |
1170 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1171 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0, /* src_mask */ | |
1174 | 0xfffc, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1178 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1179 | 0, /* rightshift */ | |
1180 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 16, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_signed, /* complain_on_overflow */ | |
1185 | ppc64_elf_toc_reloc, /* special_function */ | |
1186 | "R_PPC64_TOC16_DS", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0, /* src_mask */ | |
1189 | 0xfffc, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1193 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1194 | 0, /* rightshift */ | |
1195 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 16, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
1199 | complain_overflow_dont, /* complain_on_overflow */ | |
1200 | ppc64_elf_toc_reloc, /* special_function */ | |
1201 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1202 | FALSE, /* partial_inplace */ | |
1203 | 0, /* src_mask */ | |
1204 | 0xfffc, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
1207 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1208 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1209 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1210 | 0, /* rightshift */ |
1211 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1212 | 16, /* bitsize */ | |
1213 | FALSE, /* pc_relative */ | |
1214 | 0, /* bitpos */ | |
1215 | complain_overflow_signed, /* complain_on_overflow */ | |
1216 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1217 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1218 | FALSE, /* partial_inplace */ | |
1219 | 0, /* src_mask */ | |
1220 | 0xfffc, /* dst_mask */ | |
1221 | FALSE), /* pcrel_offset */ | |
1222 | ||
1223 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1224 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1225 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1226 | 0, /* rightshift */ | |
1227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1228 | 16, /* bitsize */ | |
1229 | FALSE, /* pc_relative */ | |
1230 | 0, /* bitpos */ | |
1231 | complain_overflow_dont, /* complain_on_overflow */ | |
1232 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1233 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1234 | FALSE, /* partial_inplace */ | |
1235 | 0, /* src_mask */ | |
1236 | 0xfffc, /* dst_mask */ | |
1237 | FALSE), /* pcrel_offset */ | |
1238 | ||
727fc41e | 1239 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1240 | HOWTO (R_PPC64_TLS, |
1241 | 0, /* rightshift */ | |
1242 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1243 | 32, /* bitsize */ | |
1244 | FALSE, /* pc_relative */ | |
1245 | 0, /* bitpos */ | |
1246 | complain_overflow_dont, /* complain_on_overflow */ | |
1247 | bfd_elf_generic_reloc, /* special_function */ | |
1248 | "R_PPC64_TLS", /* name */ | |
1249 | FALSE, /* partial_inplace */ | |
1250 | 0, /* src_mask */ | |
1251 | 0, /* dst_mask */ | |
1252 | FALSE), /* pcrel_offset */ | |
1253 | ||
727fc41e AM |
1254 | HOWTO (R_PPC64_TLSGD, |
1255 | 0, /* rightshift */ | |
1256 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1257 | 32, /* bitsize */ | |
1258 | FALSE, /* pc_relative */ | |
1259 | 0, /* bitpos */ | |
1260 | complain_overflow_dont, /* complain_on_overflow */ | |
1261 | bfd_elf_generic_reloc, /* special_function */ | |
1262 | "R_PPC64_TLSGD", /* name */ | |
1263 | FALSE, /* partial_inplace */ | |
1264 | 0, /* src_mask */ | |
1265 | 0, /* dst_mask */ | |
1266 | FALSE), /* pcrel_offset */ | |
1267 | ||
1268 | HOWTO (R_PPC64_TLSLD, | |
1269 | 0, /* rightshift */ | |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 32, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
1273 | 0, /* bitpos */ | |
1274 | complain_overflow_dont, /* complain_on_overflow */ | |
1275 | bfd_elf_generic_reloc, /* special_function */ | |
1276 | "R_PPC64_TLSLD", /* name */ | |
1277 | FALSE, /* partial_inplace */ | |
1278 | 0, /* src_mask */ | |
1279 | 0, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
411e1bfb AM |
1282 | /* Computes the load module index of the load module that contains the |
1283 | definition of its TLS sym. */ | |
1284 | HOWTO (R_PPC64_DTPMOD64, | |
1285 | 0, /* rightshift */ | |
1286 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1287 | 64, /* bitsize */ | |
1288 | FALSE, /* pc_relative */ | |
1289 | 0, /* bitpos */ | |
1290 | complain_overflow_dont, /* complain_on_overflow */ | |
1291 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1292 | "R_PPC64_DTPMOD64", /* name */ | |
1293 | FALSE, /* partial_inplace */ | |
1294 | 0, /* src_mask */ | |
1295 | ONES (64), /* dst_mask */ | |
1296 | FALSE), /* pcrel_offset */ | |
1297 | ||
1298 | /* Computes a dtv-relative displacement, the difference between the value | |
1299 | of sym+add and the base address of the thread-local storage block that | |
1300 | contains the definition of sym, minus 0x8000. */ | |
1301 | HOWTO (R_PPC64_DTPREL64, | |
1302 | 0, /* rightshift */ | |
1303 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 64, /* bitsize */ | |
1305 | FALSE, /* pc_relative */ | |
1306 | 0, /* bitpos */ | |
1307 | complain_overflow_dont, /* complain_on_overflow */ | |
1308 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1309 | "R_PPC64_DTPREL64", /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0, /* src_mask */ | |
1312 | ONES (64), /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | /* A 16 bit dtprel reloc. */ | |
1316 | HOWTO (R_PPC64_DTPREL16, | |
1317 | 0, /* rightshift */ | |
1318 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1319 | 16, /* bitsize */ | |
1320 | FALSE, /* pc_relative */ | |
1321 | 0, /* bitpos */ | |
1322 | complain_overflow_signed, /* complain_on_overflow */ | |
1323 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1324 | "R_PPC64_DTPREL16", /* name */ | |
1325 | FALSE, /* partial_inplace */ | |
1326 | 0, /* src_mask */ | |
1327 | 0xffff, /* dst_mask */ | |
1328 | FALSE), /* pcrel_offset */ | |
1329 | ||
1330 | /* Like DTPREL16, but no overflow. */ | |
1331 | HOWTO (R_PPC64_DTPREL16_LO, | |
1332 | 0, /* rightshift */ | |
1333 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1334 | 16, /* bitsize */ | |
1335 | FALSE, /* pc_relative */ | |
1336 | 0, /* bitpos */ | |
1337 | complain_overflow_dont, /* complain_on_overflow */ | |
1338 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1339 | "R_PPC64_DTPREL16_LO", /* name */ | |
1340 | FALSE, /* partial_inplace */ | |
1341 | 0, /* src_mask */ | |
1342 | 0xffff, /* dst_mask */ | |
1343 | FALSE), /* pcrel_offset */ | |
1344 | ||
1345 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1346 | HOWTO (R_PPC64_DTPREL16_HI, | |
1347 | 16, /* rightshift */ | |
1348 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1349 | 16, /* bitsize */ | |
1350 | FALSE, /* pc_relative */ | |
1351 | 0, /* bitpos */ | |
1352 | complain_overflow_dont, /* complain_on_overflow */ | |
1353 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1354 | "R_PPC64_DTPREL16_HI", /* name */ | |
1355 | FALSE, /* partial_inplace */ | |
1356 | 0, /* src_mask */ | |
1357 | 0xffff, /* dst_mask */ | |
1358 | FALSE), /* pcrel_offset */ | |
1359 | ||
1360 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1361 | HOWTO (R_PPC64_DTPREL16_HA, | |
1362 | 16, /* rightshift */ | |
1363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1364 | 16, /* bitsize */ | |
1365 | FALSE, /* pc_relative */ | |
1366 | 0, /* bitpos */ | |
1367 | complain_overflow_dont, /* complain_on_overflow */ | |
1368 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1369 | "R_PPC64_DTPREL16_HA", /* name */ | |
1370 | FALSE, /* partial_inplace */ | |
1371 | 0, /* src_mask */ | |
1372 | 0xffff, /* dst_mask */ | |
1373 | FALSE), /* pcrel_offset */ | |
1374 | ||
1375 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1376 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1377 | 32, /* rightshift */ | |
1378 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1379 | 16, /* bitsize */ | |
1380 | FALSE, /* pc_relative */ | |
1381 | 0, /* bitpos */ | |
1382 | complain_overflow_dont, /* complain_on_overflow */ | |
1383 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1384 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1385 | FALSE, /* partial_inplace */ | |
1386 | 0, /* src_mask */ | |
1387 | 0xffff, /* dst_mask */ | |
1388 | FALSE), /* pcrel_offset */ | |
1389 | ||
1390 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1391 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1392 | 32, /* rightshift */ | |
1393 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1394 | 16, /* bitsize */ | |
1395 | FALSE, /* pc_relative */ | |
1396 | 0, /* bitpos */ | |
1397 | complain_overflow_dont, /* complain_on_overflow */ | |
1398 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1399 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1400 | FALSE, /* partial_inplace */ | |
1401 | 0, /* src_mask */ | |
1402 | 0xffff, /* dst_mask */ | |
1403 | FALSE), /* pcrel_offset */ | |
1404 | ||
1405 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1406 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1407 | 48, /* rightshift */ | |
1408 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1409 | 16, /* bitsize */ | |
1410 | FALSE, /* pc_relative */ | |
1411 | 0, /* bitpos */ | |
1412 | complain_overflow_dont, /* complain_on_overflow */ | |
1413 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1414 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1415 | FALSE, /* partial_inplace */ | |
1416 | 0, /* src_mask */ | |
1417 | 0xffff, /* dst_mask */ | |
1418 | FALSE), /* pcrel_offset */ | |
1419 | ||
1420 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1421 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1422 | 48, /* rightshift */ | |
1423 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1424 | 16, /* bitsize */ | |
1425 | FALSE, /* pc_relative */ | |
1426 | 0, /* bitpos */ | |
1427 | complain_overflow_dont, /* complain_on_overflow */ | |
1428 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1429 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1430 | FALSE, /* partial_inplace */ | |
1431 | 0, /* src_mask */ | |
1432 | 0xffff, /* dst_mask */ | |
1433 | FALSE), /* pcrel_offset */ | |
1434 | ||
1435 | /* Like DTPREL16, but for insns with a DS field. */ | |
1436 | HOWTO (R_PPC64_DTPREL16_DS, | |
1437 | 0, /* rightshift */ | |
1438 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1439 | 16, /* bitsize */ | |
1440 | FALSE, /* pc_relative */ | |
1441 | 0, /* bitpos */ | |
1442 | complain_overflow_signed, /* complain_on_overflow */ | |
1443 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1444 | "R_PPC64_DTPREL16_DS", /* name */ | |
1445 | FALSE, /* partial_inplace */ | |
1446 | 0, /* src_mask */ | |
1447 | 0xfffc, /* dst_mask */ | |
1448 | FALSE), /* pcrel_offset */ | |
1449 | ||
1450 | /* Like DTPREL16_DS, but no overflow. */ | |
1451 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1452 | 0, /* rightshift */ | |
1453 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1454 | 16, /* bitsize */ | |
1455 | FALSE, /* pc_relative */ | |
1456 | 0, /* bitpos */ | |
1457 | complain_overflow_dont, /* complain_on_overflow */ | |
1458 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1459 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1460 | FALSE, /* partial_inplace */ | |
1461 | 0, /* src_mask */ | |
1462 | 0xfffc, /* dst_mask */ | |
1463 | FALSE), /* pcrel_offset */ | |
1464 | ||
1465 | /* Computes a tp-relative displacement, the difference between the value of | |
1466 | sym+add and the value of the thread pointer (r13). */ | |
1467 | HOWTO (R_PPC64_TPREL64, | |
1468 | 0, /* rightshift */ | |
1469 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1470 | 64, /* bitsize */ | |
1471 | FALSE, /* pc_relative */ | |
1472 | 0, /* bitpos */ | |
1473 | complain_overflow_dont, /* complain_on_overflow */ | |
1474 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1475 | "R_PPC64_TPREL64", /* name */ | |
1476 | FALSE, /* partial_inplace */ | |
1477 | 0, /* src_mask */ | |
1478 | ONES (64), /* dst_mask */ | |
1479 | FALSE), /* pcrel_offset */ | |
1480 | ||
1481 | /* A 16 bit tprel reloc. */ | |
1482 | HOWTO (R_PPC64_TPREL16, | |
1483 | 0, /* rightshift */ | |
1484 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1485 | 16, /* bitsize */ | |
1486 | FALSE, /* pc_relative */ | |
1487 | 0, /* bitpos */ | |
1488 | complain_overflow_signed, /* complain_on_overflow */ | |
1489 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1490 | "R_PPC64_TPREL16", /* name */ | |
1491 | FALSE, /* partial_inplace */ | |
1492 | 0, /* src_mask */ | |
1493 | 0xffff, /* dst_mask */ | |
1494 | FALSE), /* pcrel_offset */ | |
1495 | ||
1496 | /* Like TPREL16, but no overflow. */ | |
1497 | HOWTO (R_PPC64_TPREL16_LO, | |
1498 | 0, /* rightshift */ | |
1499 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1500 | 16, /* bitsize */ | |
1501 | FALSE, /* pc_relative */ | |
1502 | 0, /* bitpos */ | |
1503 | complain_overflow_dont, /* complain_on_overflow */ | |
1504 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1505 | "R_PPC64_TPREL16_LO", /* name */ | |
1506 | FALSE, /* partial_inplace */ | |
1507 | 0, /* src_mask */ | |
1508 | 0xffff, /* dst_mask */ | |
1509 | FALSE), /* pcrel_offset */ | |
1510 | ||
1511 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1512 | HOWTO (R_PPC64_TPREL16_HI, | |
1513 | 16, /* rightshift */ | |
1514 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1515 | 16, /* bitsize */ | |
1516 | FALSE, /* pc_relative */ | |
1517 | 0, /* bitpos */ | |
1518 | complain_overflow_dont, /* complain_on_overflow */ | |
1519 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1520 | "R_PPC64_TPREL16_HI", /* name */ | |
1521 | FALSE, /* partial_inplace */ | |
1522 | 0, /* src_mask */ | |
1523 | 0xffff, /* dst_mask */ | |
1524 | FALSE), /* pcrel_offset */ | |
1525 | ||
1526 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1527 | HOWTO (R_PPC64_TPREL16_HA, | |
1528 | 16, /* rightshift */ | |
1529 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1530 | 16, /* bitsize */ | |
1531 | FALSE, /* pc_relative */ | |
1532 | 0, /* bitpos */ | |
1533 | complain_overflow_dont, /* complain_on_overflow */ | |
1534 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1535 | "R_PPC64_TPREL16_HA", /* name */ | |
1536 | FALSE, /* partial_inplace */ | |
1537 | 0, /* src_mask */ | |
1538 | 0xffff, /* dst_mask */ | |
1539 | FALSE), /* pcrel_offset */ | |
1540 | ||
1541 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1542 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1543 | 32, /* rightshift */ | |
1544 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1545 | 16, /* bitsize */ | |
1546 | FALSE, /* pc_relative */ | |
1547 | 0, /* bitpos */ | |
1548 | complain_overflow_dont, /* complain_on_overflow */ | |
1549 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1550 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1551 | FALSE, /* partial_inplace */ | |
1552 | 0, /* src_mask */ | |
1553 | 0xffff, /* dst_mask */ | |
1554 | FALSE), /* pcrel_offset */ | |
1555 | ||
1556 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1557 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1558 | 32, /* rightshift */ | |
1559 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1560 | 16, /* bitsize */ | |
1561 | FALSE, /* pc_relative */ | |
1562 | 0, /* bitpos */ | |
1563 | complain_overflow_dont, /* complain_on_overflow */ | |
1564 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1565 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1566 | FALSE, /* partial_inplace */ | |
1567 | 0, /* src_mask */ | |
1568 | 0xffff, /* dst_mask */ | |
1569 | FALSE), /* pcrel_offset */ | |
1570 | ||
1571 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1572 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1573 | 48, /* rightshift */ | |
1574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1575 | 16, /* bitsize */ | |
1576 | FALSE, /* pc_relative */ | |
1577 | 0, /* bitpos */ | |
1578 | complain_overflow_dont, /* complain_on_overflow */ | |
1579 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1580 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1581 | FALSE, /* partial_inplace */ | |
1582 | 0, /* src_mask */ | |
1583 | 0xffff, /* dst_mask */ | |
1584 | FALSE), /* pcrel_offset */ | |
1585 | ||
1586 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1587 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1588 | 48, /* rightshift */ | |
1589 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1590 | 16, /* bitsize */ | |
1591 | FALSE, /* pc_relative */ | |
1592 | 0, /* bitpos */ | |
1593 | complain_overflow_dont, /* complain_on_overflow */ | |
1594 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1595 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1596 | FALSE, /* partial_inplace */ | |
1597 | 0, /* src_mask */ | |
1598 | 0xffff, /* dst_mask */ | |
1599 | FALSE), /* pcrel_offset */ | |
1600 | ||
1601 | /* Like TPREL16, but for insns with a DS field. */ | |
1602 | HOWTO (R_PPC64_TPREL16_DS, | |
1603 | 0, /* rightshift */ | |
1604 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1605 | 16, /* bitsize */ | |
1606 | FALSE, /* pc_relative */ | |
1607 | 0, /* bitpos */ | |
1608 | complain_overflow_signed, /* complain_on_overflow */ | |
1609 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1610 | "R_PPC64_TPREL16_DS", /* name */ | |
1611 | FALSE, /* partial_inplace */ | |
1612 | 0, /* src_mask */ | |
1613 | 0xfffc, /* dst_mask */ | |
1614 | FALSE), /* pcrel_offset */ | |
1615 | ||
1616 | /* Like TPREL16_DS, but no overflow. */ | |
1617 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1618 | 0, /* rightshift */ | |
1619 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1620 | 16, /* bitsize */ | |
1621 | FALSE, /* pc_relative */ | |
1622 | 0, /* bitpos */ | |
1623 | complain_overflow_dont, /* complain_on_overflow */ | |
1624 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1625 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1626 | FALSE, /* partial_inplace */ | |
1627 | 0, /* src_mask */ | |
1628 | 0xfffc, /* dst_mask */ | |
1629 | FALSE), /* pcrel_offset */ | |
1630 | ||
1631 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1632 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1633 | to the first entry relative to the TOC base (r2). */ | |
1634 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1635 | 0, /* rightshift */ | |
1636 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1637 | 16, /* bitsize */ | |
1638 | FALSE, /* pc_relative */ | |
1639 | 0, /* bitpos */ | |
1640 | complain_overflow_signed, /* complain_on_overflow */ | |
1641 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1642 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1643 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1644 | 0, /* src_mask */ |
1645 | 0xffff, /* dst_mask */ | |
b34976b6 | 1646 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1647 | |
411e1bfb AM |
1648 | /* Like GOT_TLSGD16, but no overflow. */ |
1649 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1650 | 0, /* rightshift */ |
1651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1652 | 16, /* bitsize */ | |
b34976b6 | 1653 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1654 | 0, /* bitpos */ |
1655 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1656 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1657 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1658 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1659 | 0, /* src_mask */ |
1660 | 0xffff, /* dst_mask */ | |
b34976b6 | 1661 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1662 | |
411e1bfb AM |
1663 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1664 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1665 | 16, /* rightshift */ |
1666 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1667 | 16, /* bitsize */ | |
b34976b6 | 1668 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1669 | 0, /* bitpos */ |
1670 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1671 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1672 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1673 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1674 | 0, /* src_mask */ |
1675 | 0xffff, /* dst_mask */ | |
b34976b6 | 1676 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1677 | |
411e1bfb AM |
1678 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1679 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1680 | 16, /* rightshift */ |
1681 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1682 | 16, /* bitsize */ | |
b34976b6 | 1683 | FALSE, /* pc_relative */ |
5bd4f169 | 1684 | 0, /* bitpos */ |
411e1bfb | 1685 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1686 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1687 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1688 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1689 | 0, /* src_mask */ |
1690 | 0xffff, /* dst_mask */ | |
b34976b6 | 1691 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1692 | |
411e1bfb AM |
1693 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1694 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1695 | first entry relative to the TOC base (r2). */ | |
1696 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1697 | 0, /* rightshift */ |
1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1699 | 16, /* bitsize */ | |
b34976b6 | 1700 | FALSE, /* pc_relative */ |
5bd4f169 | 1701 | 0, /* bitpos */ |
411e1bfb AM |
1702 | complain_overflow_signed, /* complain_on_overflow */ |
1703 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1704 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1705 | FALSE, /* partial_inplace */ |
d006db6c | 1706 | 0, /* src_mask */ |
411e1bfb | 1707 | 0xffff, /* dst_mask */ |
b34976b6 | 1708 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1709 | |
411e1bfb AM |
1710 | /* Like GOT_TLSLD16, but no overflow. */ |
1711 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1712 | 0, /* rightshift */ |
1713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1714 | 16, /* bitsize */ | |
b34976b6 | 1715 | FALSE, /* pc_relative */ |
5bd4f169 | 1716 | 0, /* bitpos */ |
411e1bfb AM |
1717 | complain_overflow_dont, /* complain_on_overflow */ |
1718 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1719 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1720 | FALSE, /* partial_inplace */ |
d006db6c | 1721 | 0, /* src_mask */ |
411e1bfb | 1722 | 0xffff, /* dst_mask */ |
b34976b6 | 1723 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1724 | |
411e1bfb AM |
1725 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1726 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1727 | 16, /* rightshift */ | |
5bd4f169 AM |
1728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1729 | 16, /* bitsize */ | |
b34976b6 | 1730 | FALSE, /* pc_relative */ |
5bd4f169 | 1731 | 0, /* bitpos */ |
411e1bfb | 1732 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1733 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1734 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1735 | FALSE, /* partial_inplace */ |
d006db6c | 1736 | 0, /* src_mask */ |
411e1bfb | 1737 | 0xffff, /* dst_mask */ |
b34976b6 | 1738 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1739 | |
411e1bfb AM |
1740 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1741 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1742 | 16, /* rightshift */ | |
5bd4f169 AM |
1743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1744 | 16, /* bitsize */ | |
b34976b6 | 1745 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1746 | 0, /* bitpos */ |
1747 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1748 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1749 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1750 | FALSE, /* partial_inplace */ |
d006db6c | 1751 | 0, /* src_mask */ |
411e1bfb | 1752 | 0xffff, /* dst_mask */ |
b34976b6 | 1753 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1754 | |
411e1bfb AM |
1755 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1756 | the offset to the entry relative to the TOC base (r2). */ | |
1757 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1758 | 0, /* rightshift */ |
1759 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1760 | 16, /* bitsize */ | |
b34976b6 | 1761 | FALSE, /* pc_relative */ |
5bd4f169 | 1762 | 0, /* bitpos */ |
411e1bfb | 1763 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1764 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1765 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1766 | FALSE, /* partial_inplace */ |
d006db6c | 1767 | 0, /* src_mask */ |
5bd4f169 | 1768 | 0xfffc, /* dst_mask */ |
b34976b6 | 1769 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1770 | |
411e1bfb AM |
1771 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1772 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1773 | 0, /* rightshift */ |
c061c2d8 AM |
1774 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1775 | 16, /* bitsize */ | |
b34976b6 | 1776 | FALSE, /* pc_relative */ |
5bd4f169 | 1777 | 0, /* bitpos */ |
411e1bfb AM |
1778 | complain_overflow_dont, /* complain_on_overflow */ |
1779 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1780 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1781 | FALSE, /* partial_inplace */ |
d006db6c | 1782 | 0, /* src_mask */ |
c061c2d8 | 1783 | 0xfffc, /* dst_mask */ |
b34976b6 | 1784 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1785 | |
411e1bfb AM |
1786 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1787 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1788 | 16, /* rightshift */ | |
5bd4f169 AM |
1789 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1790 | 16, /* bitsize */ | |
b34976b6 | 1791 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1792 | 0, /* bitpos */ |
1793 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1794 | ppc64_elf_unhandled_reloc, /* special_function */ |
1795 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1796 | FALSE, /* partial_inplace */ |
d006db6c | 1797 | 0, /* src_mask */ |
411e1bfb | 1798 | 0xffff, /* dst_mask */ |
b34976b6 | 1799 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1800 | |
411e1bfb AM |
1801 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1802 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1803 | 16, /* rightshift */ | |
1804 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1805 | 16, /* bitsize */ | |
1806 | FALSE, /* pc_relative */ | |
1807 | 0, /* bitpos */ | |
1808 | complain_overflow_dont, /* complain_on_overflow */ | |
1809 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1810 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1811 | FALSE, /* partial_inplace */ | |
1812 | 0, /* src_mask */ | |
1813 | 0xffff, /* dst_mask */ | |
1814 | FALSE), /* pcrel_offset */ | |
1815 | ||
1816 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1817 | offset to the entry relative to the TOC base (r2). */ | |
1818 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1819 | 0, /* rightshift */ |
1820 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1821 | 16, /* bitsize */ | |
b34976b6 | 1822 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1823 | 0, /* bitpos */ |
1824 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1825 | ppc64_elf_unhandled_reloc, /* special_function */ |
1826 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1827 | FALSE, /* partial_inplace */ |
d006db6c | 1828 | 0, /* src_mask */ |
ad8e1ba5 | 1829 | 0xfffc, /* dst_mask */ |
b34976b6 | 1830 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1831 | |
411e1bfb AM |
1832 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1833 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1834 | 0, /* rightshift */ |
1835 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1836 | 16, /* bitsize */ | |
b34976b6 | 1837 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1838 | 0, /* bitpos */ |
1839 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1840 | ppc64_elf_unhandled_reloc, /* special_function */ |
1841 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1842 | FALSE, /* partial_inplace */ |
d006db6c | 1843 | 0, /* src_mask */ |
ad8e1ba5 | 1844 | 0xfffc, /* dst_mask */ |
b34976b6 | 1845 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1846 | |
411e1bfb AM |
1847 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1848 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1849 | 16, /* rightshift */ | |
5bd4f169 AM |
1850 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1851 | 16, /* bitsize */ | |
b34976b6 | 1852 | FALSE, /* pc_relative */ |
5bd4f169 | 1853 | 0, /* bitpos */ |
411e1bfb | 1854 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1855 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1856 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1857 | FALSE, /* partial_inplace */ |
d006db6c | 1858 | 0, /* src_mask */ |
411e1bfb | 1859 | 0xffff, /* dst_mask */ |
b34976b6 | 1860 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1861 | |
411e1bfb AM |
1862 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1863 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1864 | 16, /* rightshift */ | |
5bd4f169 AM |
1865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1866 | 16, /* bitsize */ | |
b34976b6 | 1867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1868 | 0, /* bitpos */ |
1869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1870 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1871 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1872 | FALSE, /* partial_inplace */ |
d006db6c | 1873 | 0, /* src_mask */ |
411e1bfb | 1874 | 0xffff, /* dst_mask */ |
b34976b6 | 1875 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1876 | |
25f23106 AM |
1877 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1878 | 0, /* rightshift */ | |
1879 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1880 | 0, /* bitsize */ | |
1881 | FALSE, /* pc_relative */ | |
1882 | 0, /* bitpos */ | |
1883 | complain_overflow_dont, /* complain_on_overflow */ | |
1884 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1885 | "R_PPC64_JMP_IREL", /* name */ | |
1886 | FALSE, /* partial_inplace */ | |
1887 | 0, /* src_mask */ | |
1888 | 0, /* dst_mask */ | |
1889 | FALSE), /* pcrel_offset */ | |
1890 | ||
e054468f AM |
1891 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1892 | 0, /* rightshift */ | |
1893 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1894 | 64, /* bitsize */ | |
1895 | FALSE, /* pc_relative */ | |
1896 | 0, /* bitpos */ | |
1897 | complain_overflow_dont, /* complain_on_overflow */ | |
1898 | bfd_elf_generic_reloc, /* special_function */ | |
1899 | "R_PPC64_IRELATIVE", /* name */ | |
1900 | FALSE, /* partial_inplace */ | |
1901 | 0, /* src_mask */ | |
1902 | ONES (64), /* dst_mask */ | |
1903 | FALSE), /* pcrel_offset */ | |
1904 | ||
25f23106 AM |
1905 | /* A 16 bit relative relocation. */ |
1906 | HOWTO (R_PPC64_REL16, /* type */ | |
1907 | 0, /* rightshift */ | |
1908 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1909 | 16, /* bitsize */ | |
1910 | TRUE, /* pc_relative */ | |
1911 | 0, /* bitpos */ | |
1912 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1913 | bfd_elf_generic_reloc, /* special_function */ | |
1914 | "R_PPC64_REL16", /* name */ | |
1915 | FALSE, /* partial_inplace */ | |
1916 | 0, /* src_mask */ | |
1917 | 0xffff, /* dst_mask */ | |
1918 | TRUE), /* pcrel_offset */ | |
1919 | ||
1920 | /* A 16 bit relative relocation without overflow. */ | |
1921 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1922 | 0, /* rightshift */ | |
1923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1924 | 16, /* bitsize */ | |
1925 | TRUE, /* pc_relative */ | |
1926 | 0, /* bitpos */ | |
1927 | complain_overflow_dont,/* complain_on_overflow */ | |
1928 | bfd_elf_generic_reloc, /* special_function */ | |
1929 | "R_PPC64_REL16_LO", /* name */ | |
1930 | FALSE, /* partial_inplace */ | |
1931 | 0, /* src_mask */ | |
1932 | 0xffff, /* dst_mask */ | |
1933 | TRUE), /* pcrel_offset */ | |
1934 | ||
1935 | /* The high order 16 bits of a relative address. */ | |
1936 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1937 | 16, /* rightshift */ | |
1938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1939 | 16, /* bitsize */ | |
1940 | TRUE, /* pc_relative */ | |
1941 | 0, /* bitpos */ | |
1942 | complain_overflow_dont, /* complain_on_overflow */ | |
1943 | bfd_elf_generic_reloc, /* special_function */ | |
1944 | "R_PPC64_REL16_HI", /* name */ | |
1945 | FALSE, /* partial_inplace */ | |
1946 | 0, /* src_mask */ | |
1947 | 0xffff, /* dst_mask */ | |
1948 | TRUE), /* pcrel_offset */ | |
1949 | ||
1950 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1951 | the low 16 bits, treated as a signed number, is negative. */ | |
1952 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1953 | 16, /* rightshift */ | |
1954 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1955 | 16, /* bitsize */ | |
1956 | TRUE, /* pc_relative */ | |
1957 | 0, /* bitpos */ | |
1958 | complain_overflow_dont, /* complain_on_overflow */ | |
1959 | ppc64_elf_ha_reloc, /* special_function */ | |
1960 | "R_PPC64_REL16_HA", /* name */ | |
1961 | FALSE, /* partial_inplace */ | |
1962 | 0, /* src_mask */ | |
1963 | 0xffff, /* dst_mask */ | |
1964 | TRUE), /* pcrel_offset */ | |
1965 | ||
5bd4f169 AM |
1966 | /* GNU extension to record C++ vtable hierarchy. */ |
1967 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1968 | 0, /* rightshift */ | |
1969 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1970 | 0, /* bitsize */ | |
b34976b6 | 1971 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1972 | 0, /* bitpos */ |
1973 | complain_overflow_dont, /* complain_on_overflow */ | |
1974 | NULL, /* special_function */ | |
1975 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1976 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1977 | 0, /* src_mask */ |
1978 | 0, /* dst_mask */ | |
b34976b6 | 1979 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1980 | |
1981 | /* GNU extension to record C++ vtable member usage. */ | |
1982 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1983 | 0, /* rightshift */ | |
1984 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1985 | 0, /* bitsize */ | |
b34976b6 | 1986 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1987 | 0, /* bitpos */ |
1988 | complain_overflow_dont, /* complain_on_overflow */ | |
1989 | NULL, /* special_function */ | |
1990 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1991 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1992 | 0, /* src_mask */ |
1993 | 0, /* dst_mask */ | |
b34976b6 | 1994 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1995 | }; |
1996 | ||
1997 | \f | |
1998 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1999 | be done. */ | |
2000 | ||
2001 | static void | |
4ce794b7 | 2002 | ppc_howto_init (void) |
5bd4f169 AM |
2003 | { |
2004 | unsigned int i, type; | |
2005 | ||
2006 | for (i = 0; | |
2007 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2008 | i++) | |
2009 | { | |
2010 | type = ppc64_elf_howto_raw[i].type; | |
2011 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2012 | / sizeof (ppc64_elf_howto_table[0]))); | |
2013 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | static reloc_howto_type * | |
4ce794b7 AM |
2018 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2019 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2020 | { |
411e1bfb | 2021 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2022 | |
2023 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2024 | /* Initialize howto table if needed. */ | |
2025 | ppc_howto_init (); | |
2026 | ||
4ce794b7 | 2027 | switch (code) |
5bd4f169 AM |
2028 | { |
2029 | default: | |
4ce794b7 | 2030 | return NULL; |
5bd4f169 | 2031 | |
411e1bfb AM |
2032 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2033 | break; | |
2034 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2035 | break; | |
2036 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2037 | break; | |
2038 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2039 | break; | |
2040 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2041 | break; | |
2042 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2043 | break; | |
2044 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 2045 | break; |
411e1bfb | 2046 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2047 | break; |
411e1bfb | 2048 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2049 | break; |
411e1bfb | 2050 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2051 | break; |
411e1bfb | 2052 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2053 | break; |
411e1bfb | 2054 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2055 | break; |
411e1bfb | 2056 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2057 | break; |
411e1bfb | 2058 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2059 | break; |
411e1bfb | 2060 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2061 | break; |
411e1bfb | 2062 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2063 | break; |
411e1bfb | 2064 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2065 | break; |
411e1bfb | 2066 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2067 | break; |
411e1bfb | 2068 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2069 | break; |
411e1bfb | 2070 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2071 | break; |
411e1bfb | 2072 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2073 | break; |
411e1bfb | 2074 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2075 | break; |
411e1bfb | 2076 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2077 | break; |
411e1bfb | 2078 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2079 | break; |
411e1bfb | 2080 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2081 | break; |
411e1bfb | 2082 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2083 | break; |
411e1bfb | 2084 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2085 | break; |
411e1bfb | 2086 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2087 | break; |
411e1bfb | 2088 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2089 | break; |
411e1bfb | 2090 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2091 | break; |
411e1bfb | 2092 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2093 | break; |
411e1bfb | 2094 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2095 | break; |
411e1bfb | 2096 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2097 | break; |
411e1bfb | 2098 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2099 | break; |
411e1bfb | 2100 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2101 | break; |
411e1bfb | 2102 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2103 | break; |
411e1bfb | 2104 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2105 | break; |
411e1bfb | 2106 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2107 | break; |
411e1bfb | 2108 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2109 | break; |
411e1bfb | 2110 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2111 | break; |
411e1bfb | 2112 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2113 | break; |
411e1bfb | 2114 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2115 | break; |
411e1bfb | 2116 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2117 | break; |
411e1bfb | 2118 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2119 | break; |
411e1bfb | 2120 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2121 | break; |
411e1bfb | 2122 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2123 | break; |
411e1bfb | 2124 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2125 | break; |
411e1bfb | 2126 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2127 | break; |
411e1bfb | 2128 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2129 | break; |
411e1bfb | 2130 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2131 | break; |
411e1bfb | 2132 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2133 | break; |
411e1bfb | 2134 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2135 | break; |
411e1bfb | 2136 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2137 | break; |
411e1bfb | 2138 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2139 | break; |
411e1bfb | 2140 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2141 | break; |
411e1bfb | 2142 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2143 | break; |
411e1bfb | 2144 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2145 | break; |
411e1bfb | 2146 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2147 | break; |
411e1bfb | 2148 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2149 | break; |
411e1bfb | 2150 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2151 | break; |
727fc41e AM |
2152 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2153 | break; | |
2154 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2155 | break; | |
411e1bfb | 2156 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2157 | break; |
411e1bfb | 2158 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2159 | break; |
411e1bfb | 2160 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2161 | break; |
411e1bfb | 2162 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2163 | break; |
411e1bfb | 2164 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2165 | break; |
411e1bfb | 2166 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2167 | break; |
411e1bfb AM |
2168 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2169 | break; | |
2170 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2171 | break; | |
2172 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2173 | break; | |
2174 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2175 | break; | |
2176 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2177 | break; | |
2178 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2179 | break; | |
2180 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2181 | break; | |
2182 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2183 | break; | |
2184 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2185 | break; | |
2186 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2187 | break; | |
2188 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2189 | break; | |
2190 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2191 | break; | |
2192 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2193 | break; | |
2194 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2195 | break; | |
2196 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2197 | break; | |
2198 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2199 | break; | |
2200 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2201 | break; | |
2202 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2203 | break; | |
2204 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2205 | break; | |
2206 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2207 | break; | |
2208 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2209 | break; | |
2210 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2211 | break; | |
2212 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2213 | break; | |
2214 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2215 | break; | |
2216 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2217 | break; | |
2218 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2219 | break; | |
2220 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2221 | break; | |
2222 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2223 | break; | |
2224 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2225 | break; | |
2226 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2227 | break; | |
2228 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2229 | break; | |
2230 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2231 | break; | |
2232 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2233 | break; | |
25f23106 AM |
2234 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2235 | break; | |
2236 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2237 | break; | |
2238 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2239 | break; | |
2240 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2241 | break; | |
411e1bfb AM |
2242 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2243 | break; | |
2244 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2245 | break; |
2246 | } | |
2247 | ||
4ce794b7 | 2248 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2249 | }; |
2250 | ||
157090f7 AM |
2251 | static reloc_howto_type * |
2252 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2253 | const char *r_name) | |
2254 | { | |
2255 | unsigned int i; | |
2256 | ||
2257 | for (i = 0; | |
2258 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2259 | i++) | |
2260 | if (ppc64_elf_howto_raw[i].name != NULL | |
2261 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2262 | return &ppc64_elf_howto_raw[i]; | |
2263 | ||
2264 | return NULL; | |
2265 | } | |
2266 | ||
5bd4f169 AM |
2267 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2268 | ||
2269 | static void | |
4ce794b7 AM |
2270 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2271 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2272 | { |
65f38f15 AM |
2273 | unsigned int type; |
2274 | ||
ef60b7ff | 2275 | /* Initialize howto table if needed. */ |
5bd4f169 | 2276 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2277 | ppc_howto_init (); |
2278 | ||
65f38f15 | 2279 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2280 | if (type >= (sizeof (ppc64_elf_howto_table) |
2281 | / sizeof (ppc64_elf_howto_table[0]))) | |
2282 | { | |
2283 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2284 | abfd, (int) type); |
2285 | type = R_PPC64_NONE; | |
d0fb9a8d | 2286 | } |
65f38f15 | 2287 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2288 | } |
2289 | ||
04c9666a | 2290 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2291 | |
2292 | static bfd_reloc_status_type | |
4ce794b7 AM |
2293 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2294 | void *data, asection *input_section, | |
2295 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2296 | { |
805fc799 AM |
2297 | /* If this is a relocatable link (output_bfd test tells us), just |
2298 | call the generic function. Any adjustment will be done at final | |
2299 | link time. */ | |
2300 | if (output_bfd != NULL) | |
cedb70c5 | 2301 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2302 | input_section, output_bfd, error_message); |
2303 | ||
2304 | /* Adjust the addend for sign extension of the low 16 bits. | |
2305 | We won't actually be using the low 16 bits, so trashing them | |
2306 | doesn't matter. */ | |
2307 | reloc_entry->addend += 0x8000; | |
2308 | return bfd_reloc_continue; | |
2309 | } | |
5bd4f169 | 2310 | |
2441e016 AM |
2311 | static bfd_reloc_status_type |
2312 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2313 | void *data, asection *input_section, | |
2314 | bfd *output_bfd, char **error_message) | |
2315 | { | |
2316 | if (output_bfd != NULL) | |
2317 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2318 | input_section, output_bfd, error_message); | |
2319 | ||
699733f6 AM |
2320 | if (strcmp (symbol->section->name, ".opd") == 0 |
2321 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2322 | { |
2323 | bfd_vma dest = opd_entry_value (symbol->section, | |
2324 | symbol->value + reloc_entry->addend, | |
2325 | NULL, NULL); | |
2326 | if (dest != (bfd_vma) -1) | |
2327 | reloc_entry->addend = dest - (symbol->value | |
2328 | + symbol->section->output_section->vma | |
2329 | + symbol->section->output_offset); | |
2330 | } | |
2331 | return bfd_reloc_continue; | |
2332 | } | |
2333 | ||
805fc799 | 2334 | static bfd_reloc_status_type |
4ce794b7 AM |
2335 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2336 | void *data, asection *input_section, | |
2337 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2338 | { |
2339 | long insn; | |
04c9666a | 2340 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2341 | bfd_size_type octets; |
2342 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2343 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2344 | |
2345 | /* If this is a relocatable link (output_bfd test tells us), just | |
2346 | call the generic function. Any adjustment will be done at final | |
2347 | link time. */ | |
5bd4f169 | 2348 | if (output_bfd != NULL) |
cedb70c5 | 2349 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2350 | input_section, output_bfd, error_message); |
2351 | ||
2352 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2353 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2354 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2355 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2356 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2357 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2358 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2359 | |
2360 | if (is_power4) | |
5bd4f169 | 2361 | { |
805fc799 AM |
2362 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2363 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2364 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2365 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2366 | insn |= 0x02 << 21; | |
2367 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2368 | insn |= 0x08 << 21; | |
2369 | else | |
2441e016 | 2370 | goto out; |
5bd4f169 | 2371 | } |
805fc799 AM |
2372 | else |
2373 | { | |
2374 | bfd_vma target = 0; | |
2375 | bfd_vma from; | |
5bd4f169 | 2376 | |
805fc799 AM |
2377 | if (!bfd_is_com_section (symbol->section)) |
2378 | target = symbol->value; | |
2379 | target += symbol->section->output_section->vma; | |
2380 | target += symbol->section->output_offset; | |
2381 | target += reloc_entry->addend; | |
5bd4f169 | 2382 | |
805fc799 AM |
2383 | from = (reloc_entry->address |
2384 | + input_section->output_offset | |
2385 | + input_section->output_section->vma); | |
5bd4f169 | 2386 | |
805fc799 AM |
2387 | /* Invert 'y' bit if not the default. */ |
2388 | if ((bfd_signed_vma) (target - from) < 0) | |
2389 | insn ^= 0x01 << 21; | |
2390 | } | |
4ce794b7 | 2391 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2392 | out: |
2393 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2394 | input_section, output_bfd, error_message); | |
805fc799 | 2395 | } |
5bd4f169 | 2396 | |
805fc799 | 2397 | static bfd_reloc_status_type |
4ce794b7 AM |
2398 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2399 | void *data, asection *input_section, | |
2400 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2401 | { |
2402 | /* If this is a relocatable link (output_bfd test tells us), just | |
2403 | call the generic function. Any adjustment will be done at final | |
2404 | link time. */ | |
2405 | if (output_bfd != NULL) | |
cedb70c5 | 2406 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2407 | input_section, output_bfd, error_message); |
5bd4f169 | 2408 | |
805fc799 AM |
2409 | /* Subtract the symbol section base address. */ |
2410 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2411 | return bfd_reloc_continue; |
2412 | } | |
2413 | ||
805fc799 | 2414 | static bfd_reloc_status_type |
4ce794b7 AM |
2415 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2416 | void *data, asection *input_section, | |
2417 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2418 | { |
2419 | /* If this is a relocatable link (output_bfd test tells us), just | |
2420 | call the generic function. Any adjustment will be done at final | |
2421 | link time. */ | |
2422 | if (output_bfd != NULL) | |
cedb70c5 | 2423 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2424 | input_section, output_bfd, error_message); |
2425 | ||
2426 | /* Subtract the symbol section base address. */ | |
2427 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2428 | ||
2429 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2430 | reloc_entry->addend += 0x8000; | |
2431 | return bfd_reloc_continue; | |
2432 | } | |
2433 | ||
2434 | static bfd_reloc_status_type | |
4ce794b7 AM |
2435 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2436 | void *data, asection *input_section, | |
2437 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2438 | { |
2439 | bfd_vma TOCstart; | |
2440 | ||
2441 | /* If this is a relocatable link (output_bfd test tells us), just | |
2442 | call the generic function. Any adjustment will be done at final | |
2443 | link time. */ | |
2444 | if (output_bfd != NULL) | |
cedb70c5 | 2445 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2446 | input_section, output_bfd, error_message); |
2447 | ||
2448 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2449 | if (TOCstart == 0) | |
2450 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2451 | ||
2452 | /* Subtract the TOC base address. */ | |
2453 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2454 | return bfd_reloc_continue; | |
2455 | } | |
2456 | ||
2457 | static bfd_reloc_status_type | |
4ce794b7 AM |
2458 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2459 | void *data, asection *input_section, | |
2460 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2461 | { |
2462 | bfd_vma TOCstart; | |
2463 | ||
2464 | /* If this is a relocatable link (output_bfd test tells us), just | |
2465 | call the generic function. Any adjustment will be done at final | |
2466 | link time. */ | |
2467 | if (output_bfd != NULL) | |
cedb70c5 | 2468 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2469 | input_section, output_bfd, error_message); |
2470 | ||
2471 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2472 | if (TOCstart == 0) | |
2473 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2474 | ||
2475 | /* Subtract the TOC base address. */ | |
2476 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2477 | ||
2478 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2479 | reloc_entry->addend += 0x8000; | |
2480 | return bfd_reloc_continue; | |
2481 | } | |
2482 | ||
2483 | static bfd_reloc_status_type | |
4ce794b7 AM |
2484 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2485 | void *data, asection *input_section, | |
2486 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2487 | { |
2488 | bfd_vma TOCstart; | |
2489 | bfd_size_type octets; | |
2490 | ||
2491 | /* If this is a relocatable link (output_bfd test tells us), just | |
2492 | call the generic function. Any adjustment will be done at final | |
2493 | link time. */ | |
2494 | if (output_bfd != NULL) | |
cedb70c5 | 2495 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2496 | input_section, output_bfd, error_message); |
2497 | ||
2498 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2499 | if (TOCstart == 0) | |
2500 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2501 | ||
2502 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2503 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2504 | return bfd_reloc_ok; | |
2505 | } | |
2506 | ||
2507 | static bfd_reloc_status_type | |
4ce794b7 AM |
2508 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2509 | void *data, asection *input_section, | |
2510 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2511 | { |
2512 | /* If this is a relocatable link (output_bfd test tells us), just | |
2513 | call the generic function. Any adjustment will be done at final | |
2514 | link time. */ | |
2515 | if (output_bfd != NULL) | |
cedb70c5 | 2516 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2517 | input_section, output_bfd, error_message); |
2518 | ||
2519 | if (error_message != NULL) | |
2520 | { | |
2521 | static char buf[60]; | |
2522 | sprintf (buf, "generic linker can't handle %s", | |
2523 | reloc_entry->howto->name); | |
2524 | *error_message = buf; | |
2525 | } | |
2526 | return bfd_reloc_dangerous; | |
2527 | } | |
2528 | ||
e717da7e AM |
2529 | struct ppc64_elf_obj_tdata |
2530 | { | |
2531 | struct elf_obj_tdata elf; | |
2532 | ||
2533 | /* Shortcuts to dynamic linker sections. */ | |
2534 | asection *got; | |
2535 | asection *relgot; | |
2536 | ||
b3fac117 AM |
2537 | /* Used during garbage collection. We attach global symbols defined |
2538 | on removed .opd entries to this section so that the sym is removed. */ | |
2539 | asection *deleted_section; | |
81688140 | 2540 | |
e717da7e AM |
2541 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2542 | sections means we potentially need one of these for each input bfd. */ | |
2543 | union { | |
2544 | bfd_signed_vma refcount; | |
2545 | bfd_vma offset; | |
2546 | } tlsld_got; | |
8860955f AM |
2547 | |
2548 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2549 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2550 | }; |
2551 | ||
2552 | #define ppc64_elf_tdata(bfd) \ | |
2553 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2554 | ||
2555 | #define ppc64_tlsld_got(bfd) \ | |
2556 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2557 | ||
0c8d6e5c AM |
2558 | #define is_ppc64_elf(bfd) \ |
2559 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2560 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
2561 | ||
e717da7e AM |
2562 | /* Override the generic function because we store some extras. */ |
2563 | ||
2564 | static bfd_boolean | |
2565 | ppc64_elf_mkobject (bfd *abfd) | |
2566 | { | |
0ffa91dd NC |
2567 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
2568 | PPC64_ELF_TDATA); | |
e717da7e AM |
2569 | } |
2570 | ||
feee612b AM |
2571 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2572 | default is 32 bit. */ | |
2573 | ||
b34976b6 | 2574 | static bfd_boolean |
4ce794b7 | 2575 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2576 | { |
2577 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2578 | { | |
2579 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2580 | ||
2581 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2582 | { | |
2583 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2584 | abfd->arch_info = abfd->arch_info->next; | |
2585 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2586 | } | |
2587 | } | |
b34976b6 | 2588 | return TRUE; |
feee612b AM |
2589 | } |
2590 | ||
d37c89e5 AM |
2591 | /* Support for core dump NOTE sections. */ |
2592 | ||
2593 | static bfd_boolean | |
2594 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2595 | { | |
eea6121a | 2596 | size_t offset, size; |
d37c89e5 AM |
2597 | |
2598 | if (note->descsz != 504) | |
2599 | return FALSE; | |
2600 | ||
2601 | /* pr_cursig */ | |
2602 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2603 | ||
2604 | /* pr_pid */ | |
2605 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2606 | ||
2607 | /* pr_reg */ | |
2608 | offset = 112; | |
eea6121a | 2609 | size = 384; |
d37c89e5 AM |
2610 | |
2611 | /* Make a ".reg/999" section. */ | |
2612 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2613 | size, note->descpos + offset); |
d37c89e5 AM |
2614 | } |
2615 | ||
2616 | static bfd_boolean | |
2617 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2618 | { | |
2619 | if (note->descsz != 136) | |
2620 | return FALSE; | |
2621 | ||
2622 | elf_tdata (abfd)->core_program | |
2623 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2624 | elf_tdata (abfd)->core_command | |
2625 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2626 | ||
2627 | return TRUE; | |
2628 | } | |
2629 | ||
183e98be AM |
2630 | static char * |
2631 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2632 | ...) | |
2633 | { | |
2634 | switch (note_type) | |
2635 | { | |
2636 | default: | |
2637 | return NULL; | |
2638 | ||
2639 | case NT_PRPSINFO: | |
2640 | { | |
2641 | char data[136]; | |
2642 | va_list ap; | |
2643 | ||
2644 | va_start (ap, note_type); | |
2645 | memset (data, 0, 40); | |
2646 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2647 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2648 | va_end (ap); | |
2649 | return elfcore_write_note (abfd, buf, bufsiz, | |
2650 | "CORE", note_type, data, sizeof (data)); | |
2651 | } | |
2652 | ||
2653 | case NT_PRSTATUS: | |
2654 | { | |
2655 | char data[504]; | |
2656 | va_list ap; | |
2657 | long pid; | |
2658 | int cursig; | |
2659 | const void *greg; | |
2660 | ||
2661 | va_start (ap, note_type); | |
2662 | memset (data, 0, 112); | |
2663 | pid = va_arg (ap, long); | |
2664 | bfd_put_32 (abfd, pid, data + 32); | |
2665 | cursig = va_arg (ap, int); | |
2666 | bfd_put_16 (abfd, cursig, data + 12); | |
2667 | greg = va_arg (ap, const void *); | |
2668 | memcpy (data + 112, greg, 384); | |
2669 | memset (data + 496, 0, 8); | |
2670 | va_end (ap); | |
2671 | return elfcore_write_note (abfd, buf, bufsiz, | |
2672 | "CORE", note_type, data, sizeof (data)); | |
2673 | } | |
2674 | } | |
2675 | } | |
2676 | ||
5bd4f169 AM |
2677 | /* Merge backend specific data from an object file to the output |
2678 | object file when linking. */ | |
2f6d9989 | 2679 | |
b34976b6 | 2680 | static bfd_boolean |
4ce794b7 | 2681 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2682 | { |
5bd4f169 AM |
2683 | /* Check if we have the same endianess. */ |
2684 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2685 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2686 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2687 | { | |
2688 | const char *msg; | |
2689 | ||
2690 | if (bfd_big_endian (ibfd)) | |
d003868e | 2691 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2692 | "and target is little endian"); |
5bd4f169 | 2693 | else |
d003868e | 2694 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2695 | "and target is big endian"); |
5bd4f169 | 2696 | |
d003868e | 2697 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2698 | |
2699 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2700 | return FALSE; |
5bd4f169 AM |
2701 | } |
2702 | ||
b34976b6 | 2703 | return TRUE; |
5bd4f169 | 2704 | } |
f0abc2a1 | 2705 | |
5d35169e AM |
2706 | /* Add extra PPC sections. */ |
2707 | ||
b35d266b | 2708 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2709 | { |
0112cd26 NC |
2710 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2711 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2712 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2713 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2714 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2715 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2716 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2717 | }; |
2718 | ||
7c8fe5c4 AM |
2719 | enum _ppc64_sec_type { |
2720 | sec_normal = 0, | |
2721 | sec_opd = 1, | |
2722 | sec_toc = 2 | |
2723 | }; | |
2724 | ||
f0abc2a1 AM |
2725 | struct _ppc64_elf_section_data |
2726 | { | |
2727 | struct bfd_elf_section_data elf; | |
411e1bfb | 2728 | |
f0abc2a1 AM |
2729 | union |
2730 | { | |
74f0fb50 AM |
2731 | /* An array with one entry for each opd function descriptor. */ |
2732 | struct _opd_sec_data | |
2733 | { | |
2734 | /* Points to the function code section for local opd entries. */ | |
2735 | asection **func_sec; | |
2736 | ||
2737 | /* After editing .opd, adjust references to opd local syms. */ | |
2738 | long *adjust; | |
2739 | } opd; | |
7c8fe5c4 | 2740 | |
3a71aa26 AM |
2741 | /* An array for toc sections, indexed by offset/8. */ |
2742 | struct _toc_sec_data | |
2743 | { | |
2744 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2745 | unsigned *symndx; | |
2746 | ||
2747 | /* And the relocation addend. */ | |
2748 | bfd_vma *add; | |
2749 | } toc; | |
7c8fe5c4 AM |
2750 | } u; |
2751 | ||
2752 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2753 | |
7c8fe5c4 AM |
2754 | /* Flag set when small branches are detected. Used to |
2755 | select suitable defaults for the stub group size. */ | |
2756 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2757 | }; |
2758 | ||
2759 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2760 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2761 | |
2762 | static bfd_boolean | |
4ce794b7 | 2763 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2764 | { |
f592407e AM |
2765 | if (!sec->used_by_bfd) |
2766 | { | |
2767 | struct _ppc64_elf_section_data *sdata; | |
2768 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2769 | |
f592407e AM |
2770 | sdata = bfd_zalloc (abfd, amt); |
2771 | if (sdata == NULL) | |
2772 | return FALSE; | |
2773 | sec->used_by_bfd = sdata; | |
2774 | } | |
f0abc2a1 AM |
2775 | |
2776 | return _bfd_elf_new_section_hook (abfd, sec); | |
2777 | } | |
4025353c | 2778 | |
74f0fb50 | 2779 | static struct _opd_sec_data * |
4025353c AM |
2780 | get_opd_info (asection * sec) |
2781 | { | |
2782 | if (sec != NULL | |
2783 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2784 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2785 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2786 | return NULL; |
2787 | } | |
90e3cdf2 JJ |
2788 | \f |
2789 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2790 | static bfd_boolean synthetic_relocatable; |
2791 | ||
699733f6 | 2792 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2793 | |
2794 | static int | |
2795 | compare_symbols (const void *ap, const void *bp) | |
2796 | { | |
2797 | const asymbol *a = * (const asymbol **) ap; | |
2798 | const asymbol *b = * (const asymbol **) bp; | |
2799 | ||
699733f6 AM |
2800 | /* Section symbols first. */ |
2801 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2802 | return -1; |
699733f6 | 2803 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2804 | return 1; |
2805 | ||
699733f6 | 2806 | /* then .opd symbols. */ |
ffcfec52 AM |
2807 | if (strcmp (a->section->name, ".opd") == 0 |
2808 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2809 | return -1; |
ffcfec52 AM |
2810 | if (strcmp (a->section->name, ".opd") != 0 |
2811 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2812 | return 1; |
2813 | ||
699733f6 | 2814 | /* then other code symbols. */ |
90e3cdf2 JJ |
2815 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2816 | == (SEC_CODE | SEC_ALLOC) | |
2817 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2818 | != (SEC_CODE | SEC_ALLOC)) | |
2819 | return -1; | |
2820 | ||
2821 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2822 | != (SEC_CODE | SEC_ALLOC) | |
2823 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2824 | == (SEC_CODE | SEC_ALLOC)) | |
2825 | return 1; | |
2826 | ||
2827 | if (synthetic_relocatable) | |
2828 | { | |
2829 | if (a->section->id < b->section->id) | |
2830 | return -1; | |
2831 | ||
2832 | if (a->section->id > b->section->id) | |
2833 | return 1; | |
2834 | } | |
2835 | ||
2836 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2837 | return -1; | |
2838 | ||
2839 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2840 | return 1; | |
2841 | ||
4d35a0aa AM |
2842 | /* For syms with the same value, prefer strong dynamic global function |
2843 | syms over other syms. */ | |
2844 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2845 | return -1; | |
2846 | ||
2847 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2848 | return 1; | |
2849 | ||
2850 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2851 | return -1; | |
2852 | ||
2853 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2854 | return 1; | |
2855 | ||
2856 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2857 | return -1; | |
2858 | ||
2859 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2860 | return 1; | |
2861 | ||
2862 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2863 | return -1; | |
2864 | ||
2865 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2866 | return 1; | |
2867 | ||
90e3cdf2 JJ |
2868 | return 0; |
2869 | } | |
2870 | ||
699733f6 | 2871 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2872 | |
699733f6 AM |
2873 | static asymbol * |
2874 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2875 | { |
699733f6 | 2876 | long mid; |
90e3cdf2 | 2877 | |
699733f6 AM |
2878 | if (id == -1) |
2879 | { | |
2880 | while (lo < hi) | |
2881 | { | |
2882 | mid = (lo + hi) >> 1; | |
2883 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2884 | lo = mid + 1; | |
2885 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2886 | hi = mid; | |
2887 | else | |
2888 | return syms[mid]; | |
2889 | } | |
2890 | } | |
2891 | else | |
2892 | { | |
2893 | while (lo < hi) | |
2894 | { | |
2895 | mid = (lo + hi) >> 1; | |
2896 | if (syms[mid]->section->id < id) | |
2897 | lo = mid + 1; | |
2898 | else if (syms[mid]->section->id > id) | |
2899 | hi = mid; | |
2900 | else if (syms[mid]->value < value) | |
2901 | lo = mid + 1; | |
2902 | else if (syms[mid]->value > value) | |
2903 | hi = mid; | |
2904 | else | |
2905 | return syms[mid]; | |
2906 | } | |
2907 | } | |
2908 | return NULL; | |
90e3cdf2 JJ |
2909 | } |
2910 | ||
468392fb AM |
2911 | static bfd_boolean |
2912 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2913 | { | |
2914 | bfd_vma vma = *(bfd_vma *) ptr; | |
2915 | return ((section->flags & SEC_ALLOC) != 0 | |
2916 | && section->vma <= vma | |
2917 | && vma < section->vma + section->size); | |
2918 | } | |
2919 | ||
699733f6 | 2920 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2921 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2922 | |
2923 | static long | |
a7535cf3 AM |
2924 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2925 | long static_count, asymbol **static_syms, | |
2926 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2927 | asymbol **ret) |
90e3cdf2 JJ |
2928 | { |
2929 | asymbol *s; | |
699733f6 AM |
2930 | long i; |
2931 | long count; | |
90e3cdf2 | 2932 | char *names; |
a7535cf3 | 2933 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2934 | asection *opd; |
90e3cdf2 | 2935 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2936 | asymbol **syms; |
90e3cdf2 JJ |
2937 | |
2938 | *ret = NULL; | |
2939 | ||
2940 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2941 | if (opd == NULL) | |
2942 | return 0; | |
2943 | ||
a7535cf3 | 2944 | symcount = static_count; |
c9727e01 | 2945 | if (!relocatable) |
a7535cf3 | 2946 | symcount += dyn_count; |
90e3cdf2 | 2947 | if (symcount == 0) |
c9727e01 | 2948 | return 0; |
90e3cdf2 | 2949 | |
a7535cf3 AM |
2950 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2951 | if (syms == NULL) | |
7356fed5 | 2952 | return -1; |
a7535cf3 AM |
2953 | |
2954 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2955 | { | |
2956 | /* Use both symbol tables. */ | |
2957 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2958 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2959 | } | |
2960 | else if (!relocatable && static_count == 0) | |
2961 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2962 | else | |
2963 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2964 | ||
90e3cdf2 | 2965 | synthetic_relocatable = relocatable; |
595da8c5 | 2966 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2967 | |
c9727e01 AM |
2968 | if (!relocatable && symcount > 1) |
2969 | { | |
2970 | long j; | |
2971 | /* Trim duplicate syms, since we may have merged the normal and | |
2972 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2973 | different values, so trim any with the same value. */ |
c9727e01 AM |
2974 | for (i = 1, j = 1; i < symcount; ++i) |
2975 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2976 | != syms[i]->value + syms[i]->section->vma) | |
2977 | syms[j++] = syms[i]; | |
2978 | symcount = j; | |
2979 | } | |
2980 | ||
699733f6 | 2981 | i = 0; |
ffcfec52 | 2982 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
2983 | ++i; |
2984 | codesecsym = i; | |
90e3cdf2 | 2985 | |
699733f6 AM |
2986 | for (; i < symcount; ++i) |
2987 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2988 | != (SEC_CODE | SEC_ALLOC)) | |
2989 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2990 | break; | |
2991 | codesecsymend = i; | |
90e3cdf2 | 2992 | |
699733f6 AM |
2993 | for (; i < symcount; ++i) |
2994 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2995 | break; | |
2996 | secsymend = i; | |
90e3cdf2 | 2997 | |
699733f6 | 2998 | for (; i < symcount; ++i) |
ffcfec52 | 2999 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3000 | break; |
3001 | opdsymend = i; | |
90e3cdf2 | 3002 | |
699733f6 AM |
3003 | for (; i < symcount; ++i) |
3004 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3005 | != (SEC_CODE | SEC_ALLOC)) | |
3006 | break; | |
3007 | symcount = i; | |
3008 | ||
c9727e01 | 3009 | count = 0; |
90e3cdf2 | 3010 | |
699733f6 | 3011 | if (relocatable) |
90e3cdf2 | 3012 | { |
699733f6 AM |
3013 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3014 | arelent *r; | |
3015 | size_t size; | |
3016 | long relcount; | |
90e3cdf2 | 3017 | |
468392fb AM |
3018 | if (opdsymend == secsymend) |
3019 | goto done; | |
3020 | ||
699733f6 | 3021 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3022 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3023 | if (relcount == 0) |
c9727e01 | 3024 | goto done; |
90e3cdf2 | 3025 | |
7356fed5 AM |
3026 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3027 | { | |
3028 | count = -1; | |
3029 | goto done; | |
3030 | } | |
3031 | ||
699733f6 | 3032 | size = 0; |
595da8c5 | 3033 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3034 | { |
3035 | asymbol *sym; | |
90e3cdf2 | 3036 | |
595da8c5 | 3037 | while (r < opd->relocation + relcount |
699733f6 AM |
3038 | && r->address < syms[i]->value + opd->vma) |
3039 | ++r; | |
90e3cdf2 | 3040 | |
595da8c5 | 3041 | if (r == opd->relocation + relcount) |
699733f6 | 3042 | break; |
90e3cdf2 | 3043 | |
699733f6 AM |
3044 | if (r->address != syms[i]->value + opd->vma) |
3045 | continue; | |
90e3cdf2 | 3046 | |
699733f6 AM |
3047 | if (r->howto->type != R_PPC64_ADDR64) |
3048 | continue; | |
90e3cdf2 | 3049 | |
699733f6 AM |
3050 | sym = *r->sym_ptr_ptr; |
3051 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3052 | sym->section->id, sym->value + r->addend)) | |
3053 | { | |
3054 | ++count; | |
3055 | size += sizeof (asymbol); | |
3056 | size += strlen (syms[i]->name) + 2; | |
3057 | } | |
3058 | } | |
90e3cdf2 | 3059 | |
699733f6 AM |
3060 | s = *ret = bfd_malloc (size); |
3061 | if (s == NULL) | |
3062 | { | |
7356fed5 | 3063 | count = -1; |
c9727e01 | 3064 | goto done; |
699733f6 | 3065 | } |
90e3cdf2 | 3066 | |
699733f6 | 3067 | names = (char *) (s + count); |
90e3cdf2 | 3068 | |
595da8c5 | 3069 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3070 | { |
699733f6 | 3071 | asymbol *sym; |
90e3cdf2 | 3072 | |
595da8c5 | 3073 | while (r < opd->relocation + relcount |
699733f6 AM |
3074 | && r->address < syms[i]->value + opd->vma) |
3075 | ++r; | |
90e3cdf2 | 3076 | |
595da8c5 | 3077 | if (r == opd->relocation + relcount) |
699733f6 AM |
3078 | break; |
3079 | ||
3080 | if (r->address != syms[i]->value + opd->vma) | |
3081 | continue; | |
3082 | ||
3083 | if (r->howto->type != R_PPC64_ADDR64) | |
3084 | continue; | |
90e3cdf2 | 3085 | |
699733f6 AM |
3086 | sym = *r->sym_ptr_ptr; |
3087 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3088 | sym->section->id, sym->value + r->addend)) | |
3089 | { | |
3090 | size_t len; | |
3091 | ||
3092 | *s = *syms[i]; | |
6ba2a415 | 3093 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3094 | s->section = sym->section; |
3095 | s->value = sym->value + r->addend; | |
3096 | s->name = names; | |
3097 | *names++ = '.'; | |
3098 | len = strlen (syms[i]->name); | |
3099 | memcpy (names, syms[i]->name, len + 1); | |
3100 | names += len + 1; | |
6f610d07 UW |
3101 | /* Have udata.p point back to the original symbol this |
3102 | synthetic symbol was derived from. */ | |
3103 | s->udata.p = syms[i]; | |
699733f6 AM |
3104 | s++; |
3105 | } | |
3106 | } | |
3107 | } | |
3108 | else | |
90e3cdf2 | 3109 | { |
468392fb | 3110 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3111 | bfd_byte *contents; |
3112 | size_t size; | |
468392fb AM |
3113 | long plt_count = 0; |
3114 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3115 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3116 | arelent *p; | |
90e3cdf2 | 3117 | |
699733f6 AM |
3118 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3119 | { | |
3120 | if (contents) | |
c9727e01 AM |
3121 | { |
3122 | free_contents_and_exit: | |
3123 | free (contents); | |
3124 | } | |
7356fed5 | 3125 | count = -1; |
c9727e01 | 3126 | goto done; |
699733f6 | 3127 | } |
90e3cdf2 | 3128 | |
699733f6 AM |
3129 | size = 0; |
3130 | for (i = secsymend; i < opdsymend; ++i) | |
3131 | { | |
3132 | bfd_vma ent; | |
90e3cdf2 | 3133 | |
5ef11c02 AM |
3134 | /* Ignore bogus symbols. */ |
3135 | if (syms[i]->value > opd->size - 8) | |
3136 | continue; | |
3137 | ||
699733f6 AM |
3138 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3139 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3140 | { | |
3141 | ++count; | |
3142 | size += sizeof (asymbol); | |
3143 | size += strlen (syms[i]->name) + 2; | |
3144 | } | |
3145 | } | |
90e3cdf2 | 3146 | |
468392fb | 3147 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3148 | if (dyn_count != 0 |
3149 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3150 | { |
3151 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3152 | size_t extdynsize; | |
3153 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3154 | ||
3155 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3156 | goto free_contents_and_exit; | |
3157 | ||
3158 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3159 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3160 | ||
3161 | extdyn = dynbuf; | |
3162 | extdynend = extdyn + dynamic->size; | |
3163 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3164 | { | |
3165 | Elf_Internal_Dyn dyn; | |
3166 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3167 | ||
3168 | if (dyn.d_tag == DT_NULL) | |
3169 | break; | |
3170 | ||
3171 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3172 | { | |
3173 | /* The first glink stub starts at offset 32; see comment in | |
3174 | ppc64_elf_finish_dynamic_sections. */ | |
3175 | glink_vma = dyn.d_un.d_val + 32; | |
3176 | /* The .glink section usually does not survive the final | |
3177 | link; search for the section (usually .text) where the | |
3178 | glink stubs now reside. */ | |
3179 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3180 | &glink_vma); | |
3181 | break; | |
3182 | } | |
3183 | } | |
3184 | ||
3185 | free (dynbuf); | |
3186 | } | |
3187 | ||
3188 | if (glink != NULL) | |
3189 | { | |
3190 | /* Determine __glink trampoline by reading the relative branch | |
3191 | from the first glink stub. */ | |
3192 | bfd_byte buf[4]; | |
3193 | if (bfd_get_section_contents (abfd, glink, buf, | |
3194 | glink_vma + 4 - glink->vma, 4)) | |
3195 | { | |
3196 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3197 | insn ^= B_DOT; | |
3198 | if ((insn & ~0x3fffffc) == 0) | |
3199 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3200 | } | |
3201 | ||
3202 | if (resolv_vma) | |
3203 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3204 | |
066ee829 AM |
3205 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3206 | if (relplt != NULL) | |
3207 | { | |
3208 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3209 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3210 | goto free_contents_and_exit; | |
468392fb | 3211 | |
066ee829 AM |
3212 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3213 | size += plt_count * sizeof (asymbol); | |
468392fb | 3214 | |
066ee829 AM |
3215 | p = relplt->relocation; |
3216 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3217 | { |
3218 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3219 | if (p->addend != 0) | |
3220 | size += sizeof ("+0x") - 1 + 16; | |
3221 | } | |
066ee829 | 3222 | } |
468392fb AM |
3223 | } |
3224 | ||
699733f6 AM |
3225 | s = *ret = bfd_malloc (size); |
3226 | if (s == NULL) | |
7356fed5 | 3227 | goto free_contents_and_exit; |
90e3cdf2 | 3228 | |
468392fb | 3229 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3230 | |
699733f6 | 3231 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3232 | { |
699733f6 | 3233 | bfd_vma ent; |
90e3cdf2 | 3234 | |
5ef11c02 AM |
3235 | if (syms[i]->value > opd->size - 8) |
3236 | continue; | |
3237 | ||
699733f6 AM |
3238 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3239 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3240 | { |
c9727e01 | 3241 | long lo, hi; |
699733f6 | 3242 | size_t len; |
c9727e01 | 3243 | asection *sec = abfd->sections; |
90e3cdf2 | 3244 | |
699733f6 AM |
3245 | *s = *syms[i]; |
3246 | lo = codesecsym; | |
3247 | hi = codesecsymend; | |
3248 | while (lo < hi) | |
3249 | { | |
c9727e01 | 3250 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3251 | if (syms[mid]->section->vma < ent) |
3252 | lo = mid + 1; | |
3253 | else if (syms[mid]->section->vma > ent) | |
3254 | hi = mid; | |
3255 | else | |
c9727e01 AM |
3256 | { |
3257 | sec = syms[mid]->section; | |
3258 | break; | |
3259 | } | |
699733f6 AM |
3260 | } |
3261 | ||
c9727e01 | 3262 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3263 | sec = syms[lo - 1]->section; |
699733f6 AM |
3264 | |
3265 | for (; sec != NULL; sec = sec->next) | |
3266 | { | |
3267 | if (sec->vma > ent) | |
3268 | break; | |
3269 | if ((sec->flags & SEC_ALLOC) == 0 | |
3270 | || (sec->flags & SEC_LOAD) == 0) | |
3271 | break; | |
3272 | if ((sec->flags & SEC_CODE) != 0) | |
3273 | s->section = sec; | |
3274 | } | |
6ba2a415 | 3275 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3276 | s->value = ent - s->section->vma; |
3277 | s->name = names; | |
3278 | *names++ = '.'; | |
3279 | len = strlen (syms[i]->name); | |
3280 | memcpy (names, syms[i]->name, len + 1); | |
3281 | names += len + 1; | |
6f610d07 UW |
3282 | /* Have udata.p point back to the original symbol this |
3283 | synthetic symbol was derived from. */ | |
3284 | s->udata.p = syms[i]; | |
699733f6 | 3285 | s++; |
90e3cdf2 | 3286 | } |
90e3cdf2 | 3287 | } |
699733f6 | 3288 | free (contents); |
468392fb AM |
3289 | |
3290 | if (glink != NULL && relplt != NULL) | |
3291 | { | |
3292 | if (resolv_vma) | |
3293 | { | |
3294 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3295 | memset (s, 0, sizeof *s); |
468392fb | 3296 | s->the_bfd = abfd; |
6ba2a415 | 3297 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3298 | s->section = glink; |
3299 | s->value = resolv_vma - glink->vma; | |
3300 | s->name = names; | |
3301 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3302 | names += sizeof ("__glink_PLTresolve"); | |
3303 | s++; | |
3304 | count++; | |
3305 | } | |
3306 | ||
3307 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3308 | stub rather than on the glink branch table entry. The | |
3309 | objdump disassembler would then use a sensible symbol | |
3310 | name on plt calls. The difficulty in doing so is | |
3311 | a) finding the stubs, and, | |
3312 | b) matching stubs against plt entries, and, | |
3313 | c) there can be multiple stubs for a given plt entry. | |
3314 | ||
3315 | Solving (a) could be done by code scanning, but older | |
3316 | ppc64 binaries used different stubs to current code. | |
3317 | (b) is the tricky one since you need to known the toc | |
3318 | pointer for at least one function that uses a pic stub to | |
3319 | be able to calculate the plt address referenced. | |
3320 | (c) means gdb would need to set multiple breakpoints (or | |
3321 | find the glink branch itself) when setting breakpoints | |
3322 | for pending shared library loads. */ | |
3323 | p = relplt->relocation; | |
3324 | for (i = 0; i < plt_count; i++, p++) | |
3325 | { | |
3326 | size_t len; | |
3327 | ||
3328 | *s = **p->sym_ptr_ptr; | |
3329 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3330 | we are defining a symbol, ensure one of them is set. */ | |
3331 | if ((s->flags & BSF_LOCAL) == 0) | |
3332 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3333 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3334 | s->section = glink; |
3335 | s->value = glink_vma - glink->vma; | |
3336 | s->name = names; | |
3337 | s->udata.p = NULL; | |
3338 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3339 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3340 | names += len; | |
e054468f AM |
3341 | if (p->addend != 0) |
3342 | { | |
3343 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3344 | names += sizeof ("+0x") - 1; | |
3345 | bfd_sprintf_vma (abfd, names, p->addend); | |
3346 | names += strlen (names); | |
3347 | } | |
468392fb AM |
3348 | memcpy (names, "@plt", sizeof ("@plt")); |
3349 | names += sizeof ("@plt"); | |
3350 | s++; | |
3351 | glink_vma += 8; | |
3352 | if (i >= 0x8000) | |
3353 | glink_vma += 4; | |
3354 | } | |
3355 | count += plt_count; | |
3356 | } | |
90e3cdf2 JJ |
3357 | } |
3358 | ||
c9727e01 | 3359 | done: |
a7535cf3 | 3360 | free (syms); |
90e3cdf2 JJ |
3361 | return count; |
3362 | } | |
5bd4f169 | 3363 | \f |
65f38f15 AM |
3364 | /* The following functions are specific to the ELF linker, while |
3365 | functions above are used generally. Those named ppc64_elf_* are | |
3366 | called by the main ELF linker code. They appear in this file more | |
3367 | or less in the order in which they are called. eg. | |
3368 | ppc64_elf_check_relocs is called early in the link process, | |
3369 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3370 | called. |
3371 | ||
3372 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3373 | functions have both a function code symbol and a function descriptor | |
3374 | symbol. A call to foo in a relocatable object file looks like: | |
3375 | ||
3376 | . .text | |
3377 | . x: | |
3378 | . bl .foo | |
3379 | . nop | |
3380 | ||
3381 | The function definition in another object file might be: | |
3382 | ||
3383 | . .section .opd | |
3384 | . foo: .quad .foo | |
3385 | . .quad .TOC.@tocbase | |
3386 | . .quad 0 | |
3387 | . | |
3388 | . .text | |
3389 | . .foo: blr | |
3390 | ||
3391 | When the linker resolves the call during a static link, the branch | |
3392 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3393 | If the function definition is in a shared library, things are a little | |
3394 | different: The call goes via a plt call stub, the opd information gets | |
3395 | copied to the plt, and the linker patches the nop. | |
3396 | ||
3397 | . x: | |
3398 | . bl .foo_stub | |
3399 | . ld 2,40(1) | |
3400 | . | |
3401 | . | |
3402 | . .foo_stub: | |
3403 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3404 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3405 | . std 2,40(1) # this is the general idea |
3406 | . ld 11,0(12) | |
3407 | . ld 2,8(12) | |
3408 | . mtctr 11 | |
3409 | . ld 11,16(12) | |
3410 | . bctr | |
3411 | . | |
3412 | . .section .plt | |
3413 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3414 | ||
3415 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3416 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3417 | copying. | |
3418 | ||
3419 | What are the difficulties here? Well, firstly, the relocations | |
3420 | examined by the linker in check_relocs are against the function code | |
3421 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3422 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3423 | to carefully copy dynamic link information from one symbol to the other. | |
3424 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3425 | symbol as is normal for most other backends. We need foo dynamic | |
3426 | instead, at least for an application final link. However, when | |
3427 | creating a shared library containing foo, we need to have both symbols | |
3428 | dynamic so that references to .foo are satisfied during the early | |
3429 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3430 | definition from some other object, eg. a static library. |
3431 | ||
3432 | Update: As of August 2004, we support a new convention. Function | |
3433 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3434 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3435 | |
3436 | /* The linker needs to keep track of the number of relocs that it | |
3437 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3438 | This is so that it can later discard them if they are found to be | |
3439 | unnecessary. We store the information in a field extending the | |
3440 | regular ELF linker hash table. */ | |
3441 | ||
3442 | struct ppc_dyn_relocs | |
3443 | { | |
3444 | struct ppc_dyn_relocs *next; | |
3445 | ||
3446 | /* The input section of the reloc. */ | |
3447 | asection *sec; | |
3448 | ||
3449 | /* Total number of relocs copied for the input section. */ | |
3450 | bfd_size_type count; | |
3451 | ||
3452 | /* Number of pc-relative relocs copied for the input section. */ | |
3453 | bfd_size_type pc_count; | |
3454 | }; | |
3455 | ||
411e1bfb AM |
3456 | /* Track GOT entries needed for a given symbol. We might need more |
3457 | than one got entry per symbol. */ | |
3458 | struct got_entry | |
3459 | { | |
3460 | struct got_entry *next; | |
3461 | ||
e7b938ca | 3462 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3463 | bfd_vma addend; |
3464 | ||
e717da7e AM |
3465 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3466 | symbol referenced from different input files. This is to support | |
3467 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3468 | from one input file to another. FIXME: After group_sections we |
3469 | ought to merge entries within the group. | |
e717da7e AM |
3470 | |
3471 | Point to the BFD owning this GOT entry. */ | |
3472 | bfd *owner; | |
3473 | ||
3474 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3475 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3476 | char tls_type; | |
3477 | ||
e7b938ca | 3478 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3479 | union |
3480 | { | |
3481 | bfd_signed_vma refcount; | |
3482 | bfd_vma offset; | |
3483 | } got; | |
411e1bfb AM |
3484 | }; |
3485 | ||
3486 | /* The same for PLT. */ | |
3487 | struct plt_entry | |
3488 | { | |
3489 | struct plt_entry *next; | |
3490 | ||
3491 | bfd_vma addend; | |
3492 | ||
3493 | union | |
3494 | { | |
3495 | bfd_signed_vma refcount; | |
3496 | bfd_vma offset; | |
3497 | } plt; | |
3498 | }; | |
3499 | ||
1d483afe | 3500 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3501 | selects those that must be copied when linking a shared library, |
3502 | even when the symbol is local. */ | |
65f38f15 | 3503 | |
1d483afe AM |
3504 | static int |
3505 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3506 | enum elf_ppc64_reloc_type r_type) | |
3507 | { | |
3508 | switch (r_type) | |
3509 | { | |
3510 | default: | |
3511 | return 1; | |
3512 | ||
3513 | case R_PPC64_REL32: | |
3514 | case R_PPC64_REL64: | |
3515 | case R_PPC64_REL30: | |
3516 | return 0; | |
3517 | ||
3518 | case R_PPC64_TPREL16: | |
3519 | case R_PPC64_TPREL16_LO: | |
3520 | case R_PPC64_TPREL16_HI: | |
3521 | case R_PPC64_TPREL16_HA: | |
3522 | case R_PPC64_TPREL16_DS: | |
3523 | case R_PPC64_TPREL16_LO_DS: | |
3524 | case R_PPC64_TPREL16_HIGHER: | |
3525 | case R_PPC64_TPREL16_HIGHERA: | |
3526 | case R_PPC64_TPREL16_HIGHEST: | |
3527 | case R_PPC64_TPREL16_HIGHESTA: | |
3528 | case R_PPC64_TPREL64: | |
3529 | return !info->executable; | |
3530 | } | |
3531 | } | |
65f38f15 | 3532 | |
f4656909 AM |
3533 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3534 | copying dynamic variables from a shared lib into an app's dynbss | |
3535 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3536 | shared lib. With code that gcc generates, it's vital that this be |
3537 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3538 | the address of a function descriptor, which resides in the .opd | |
3539 | section. gcc uses the descriptor directly rather than going via the | |
3540 | GOT as some other ABI's do, which means that initialized function | |
3541 | pointers must reference the descriptor. Thus, a function pointer | |
3542 | initialized to the address of a function in a shared library will | |
3543 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3544 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3545 | presents a problem as a plt entry for that function is also |
3546 | initialized from the function descriptor symbol and the copy reloc | |
3547 | may not be initialized first. */ | |
a23b6845 | 3548 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3549 | |
721956f4 AM |
3550 | /* Section name for stubs is the associated section name plus this |
3551 | string. */ | |
3552 | #define STUB_SUFFIX ".stub" | |
3553 | ||
3554 | /* Linker stubs. | |
3555 | ppc_stub_long_branch: | |
3556 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3557 | destination, but a 24 bit branch in a stub section will reach. | |
3558 | . b dest | |
3559 | ||
3560 | ppc_stub_plt_branch: | |
3561 | Similar to the above, but a 24 bit branch in the stub section won't | |
3562 | reach its destination. | |
87e226ce AM |
3563 | . addis %r12,%r2,xxx@toc@ha |
3564 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3565 | . mtctr %r11 |
3566 | . bctr | |
3567 | ||
3568 | ppc_stub_plt_call: | |
2c66dc6c AM |
3569 | Used to call a function in a shared library. If it so happens that |
3570 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3571 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3572 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3573 | . std %r2,40(%r1) |
87e226ce | 3574 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3575 | . mtctr %r11 |
ac2df442 | 3576 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3577 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3578 | . bctr |
ad8e1ba5 AM |
3579 | |
3580 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3581 | code to adjust the value and save r2 to support multiple toc sections. | |
3582 | A ppc_stub_long_branch with an r2 offset looks like: | |
3583 | . std %r2,40(%r1) | |
3584 | . addis %r2,%r2,off@ha | |
3585 | . addi %r2,%r2,off@l | |
3586 | . b dest | |
3587 | ||
3588 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3589 | . std %r2,40(%r1) | |
3590 | . addis %r12,%r2,xxx@toc@ha | |
3591 | . ld %r11,xxx@toc@l(%r12) | |
3592 | . addis %r2,%r2,off@ha | |
3593 | . addi %r2,%r2,off@l | |
3594 | . mtctr %r11 | |
3595 | . bctr | |
ac2df442 AM |
3596 | |
3597 | In cases where the "addis" instruction would add zero, the "addis" is | |
3598 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3599 | */ |
3600 | ||
3601 | enum ppc_stub_type { | |
3602 | ppc_stub_none, | |
3603 | ppc_stub_long_branch, | |
ad8e1ba5 | 3604 | ppc_stub_long_branch_r2off, |
721956f4 | 3605 | ppc_stub_plt_branch, |
ad8e1ba5 | 3606 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3607 | ppc_stub_plt_call |
3608 | }; | |
3609 | ||
3610 | struct ppc_stub_hash_entry { | |
3611 | ||
3612 | /* Base hash table entry structure. */ | |
3613 | struct bfd_hash_entry root; | |
3614 | ||
ad8e1ba5 AM |
3615 | enum ppc_stub_type stub_type; |
3616 | ||
721956f4 AM |
3617 | /* The stub section. */ |
3618 | asection *stub_sec; | |
3619 | ||
3620 | /* Offset within stub_sec of the beginning of this stub. */ | |
3621 | bfd_vma stub_offset; | |
3622 | ||
3623 | /* Given the symbol's value and its section we can determine its final | |
3624 | value when building the stubs (so the stub knows where to jump. */ | |
3625 | bfd_vma target_value; | |
3626 | asection *target_section; | |
3627 | ||
721956f4 AM |
3628 | /* The symbol table entry, if any, that this was derived from. */ |
3629 | struct ppc_link_hash_entry *h; | |
e054468f | 3630 | struct plt_entry *plt_ent; |
721956f4 | 3631 | |
411e1bfb AM |
3632 | /* And the reloc addend that this was derived from. */ |
3633 | bfd_vma addend; | |
3634 | ||
721956f4 AM |
3635 | /* Where this stub is being called from, or, in the case of combined |
3636 | stub sections, the first input section in the group. */ | |
3637 | asection *id_sec; | |
3638 | }; | |
3639 | ||
3640 | struct ppc_branch_hash_entry { | |
3641 | ||
3642 | /* Base hash table entry structure. */ | |
3643 | struct bfd_hash_entry root; | |
3644 | ||
c456f082 | 3645 | /* Offset within branch lookup table. */ |
721956f4 AM |
3646 | unsigned int offset; |
3647 | ||
3648 | /* Generation marker. */ | |
3649 | unsigned int iter; | |
3650 | }; | |
65f38f15 AM |
3651 | |
3652 | struct ppc_link_hash_entry | |
3653 | { | |
3654 | struct elf_link_hash_entry elf; | |
3655 | ||
b3fac117 AM |
3656 | union { |
3657 | /* A pointer to the most recently used stub hash entry against this | |
3658 | symbol. */ | |
3659 | struct ppc_stub_hash_entry *stub_cache; | |
3660 | ||
3661 | /* A pointer to the next symbol starting with a '.' */ | |
3662 | struct ppc_link_hash_entry *next_dot_sym; | |
3663 | } u; | |
721956f4 | 3664 | |
65f38f15 AM |
3665 | /* Track dynamic relocs copied for this symbol. */ |
3666 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3667 | |
721956f4 | 3668 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3669 | struct ppc_link_hash_entry *oh; |
721956f4 | 3670 | |
e86ce104 AM |
3671 | /* Flag function code and descriptor symbols. */ |
3672 | unsigned int is_func:1; | |
3673 | unsigned int is_func_descriptor:1; | |
908b32fc | 3674 | unsigned int fake:1; |
411e1bfb | 3675 | |
c5614fa4 AM |
3676 | /* Whether global opd/toc sym has been adjusted or not. |
3677 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3678 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3679 | unsigned int adjust_done:1; |
3680 | ||
99877b66 AM |
3681 | /* Set if we twiddled this symbol to weak at some stage. */ |
3682 | unsigned int was_undefined:1; | |
3683 | ||
411e1bfb | 3684 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3685 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3686 | corresponding relocs are encountered during check_relocs. | |
3687 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3688 | indicate the corresponding GOT entry type is not needed. | |
3689 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3690 | a TPREL one. We use a separate flag rather than setting TPREL | |
3691 | just for convenience in distinguishing the two cases. */ | |
3692 | #define TLS_GD 1 /* GD reloc. */ | |
3693 | #define TLS_LD 2 /* LD reloc. */ | |
3694 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3695 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3696 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3697 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3698 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3699 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
e7b938ca | 3700 | char tls_mask; |
65f38f15 AM |
3701 | }; |
3702 | ||
3703 | /* ppc64 ELF linker hash table. */ | |
3704 | ||
3705 | struct ppc_link_hash_table | |
3706 | { | |
3707 | struct elf_link_hash_table elf; | |
3708 | ||
721956f4 AM |
3709 | /* The stub hash table. */ |
3710 | struct bfd_hash_table stub_hash_table; | |
3711 | ||
3712 | /* Another hash table for plt_branch stubs. */ | |
3713 | struct bfd_hash_table branch_hash_table; | |
3714 | ||
3715 | /* Linker stub bfd. */ | |
3716 | bfd *stub_bfd; | |
3717 | ||
3718 | /* Linker call-backs. */ | |
4ce794b7 AM |
3719 | asection * (*add_stub_section) (const char *, asection *); |
3720 | void (*layout_sections_again) (void); | |
721956f4 AM |
3721 | |
3722 | /* Array to keep track of which stub sections have been created, and | |
3723 | information on stub grouping. */ | |
3724 | struct map_stub { | |
3725 | /* This is the section to which stubs in the group will be attached. */ | |
3726 | asection *link_sec; | |
3727 | /* The stub section. */ | |
3728 | asection *stub_sec; | |
ad8e1ba5 AM |
3729 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3730 | bfd_vma toc_off; | |
721956f4 AM |
3731 | } *stub_group; |
3732 | ||
ad8e1ba5 AM |
3733 | /* Temp used when calculating TOC pointers. */ |
3734 | bfd_vma toc_curr; | |
3735 | ||
8f3bab57 AM |
3736 | /* Highest input section id. */ |
3737 | int top_id; | |
3738 | ||
734b6cf9 AM |
3739 | /* Highest output section index. */ |
3740 | int top_index; | |
3741 | ||
b3fac117 AM |
3742 | /* Used when adding symbols. */ |
3743 | struct ppc_link_hash_entry *dot_syms; | |
3744 | ||
734b6cf9 AM |
3745 | /* List of input sections for each output section. */ |
3746 | asection **input_list; | |
721956f4 | 3747 | |
65f38f15 | 3748 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3749 | asection *got; |
4ce794b7 AM |
3750 | asection *plt; |
3751 | asection *relplt; | |
e054468f AM |
3752 | asection *iplt; |
3753 | asection *reliplt; | |
4ce794b7 AM |
3754 | asection *dynbss; |
3755 | asection *relbss; | |
3756 | asection *glink; | |
82bd7b59 | 3757 | asection *sfpr; |
4ce794b7 AM |
3758 | asection *brlt; |
3759 | asection *relbrlt; | |
ec338859 | 3760 | |
8387904d AM |
3761 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3762 | struct ppc_link_hash_entry *tls_get_addr; | |
3763 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3764 | |
9b5ecbd0 AM |
3765 | /* Statistics. */ |
3766 | unsigned long stub_count[ppc_stub_plt_call]; | |
3767 | ||
ee75fd95 AM |
3768 | /* Number of stubs against global syms. */ |
3769 | unsigned long stub_globals; | |
3770 | ||
ad8e1ba5 | 3771 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3772 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3773 | |
a7f2871e AM |
3774 | /* Set if __tls_get_addr optimization should not be done. */ |
3775 | unsigned int no_tls_get_addr_opt:1; | |
3776 | ||
4c52953f AM |
3777 | /* Support for multiple toc sections. */ |
3778 | unsigned int no_multi_toc:1; | |
3779 | unsigned int multi_toc_needed:1; | |
3780 | ||
5d1634d7 | 3781 | /* Set on error. */ |
99877b66 | 3782 | unsigned int stub_error:1; |
721956f4 | 3783 | |
7d9616d7 | 3784 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3785 | unsigned int twiddled_syms:1; |
721956f4 AM |
3786 | |
3787 | /* Incremented every time we size stubs. */ | |
3788 | unsigned int stub_iteration; | |
5d1634d7 | 3789 | |
87d72d41 AM |
3790 | /* Small local sym cache. */ |
3791 | struct sym_cache sym_cache; | |
65f38f15 AM |
3792 | }; |
3793 | ||
4c52953f AM |
3794 | /* Rename some of the generic section flags to better document how they |
3795 | are used here. */ | |
3796 | #define has_toc_reloc has_gp_reloc | |
3797 | #define makes_toc_func_call need_finalize_relax | |
3798 | #define call_check_in_progress reloc_done | |
3799 | ||
65f38f15 AM |
3800 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3801 | ||
3802 | #define ppc_hash_table(p) \ | |
3803 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3804 | ||
721956f4 AM |
3805 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3806 | ((struct ppc_stub_hash_entry *) \ | |
3807 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3808 | ||
3809 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3810 | ((struct ppc_branch_hash_entry *) \ | |
3811 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3812 | ||
3813 | /* Create an entry in the stub hash table. */ | |
3814 | ||
3815 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3816 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3817 | struct bfd_hash_table *table, | |
3818 | const char *string) | |
721956f4 AM |
3819 | { |
3820 | /* Allocate the structure if it has not already been allocated by a | |
3821 | subclass. */ | |
3822 | if (entry == NULL) | |
3823 | { | |
3824 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3825 | if (entry == NULL) | |
3826 | return entry; | |
3827 | } | |
3828 | ||
3829 | /* Call the allocation method of the superclass. */ | |
3830 | entry = bfd_hash_newfunc (entry, table, string); | |
3831 | if (entry != NULL) | |
3832 | { | |
3833 | struct ppc_stub_hash_entry *eh; | |
3834 | ||
3835 | /* Initialize the local fields. */ | |
3836 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3837 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3838 | eh->stub_sec = NULL; |
3839 | eh->stub_offset = 0; | |
3840 | eh->target_value = 0; | |
3841 | eh->target_section = NULL; | |
721956f4 AM |
3842 | eh->h = NULL; |
3843 | eh->id_sec = NULL; | |
3844 | } | |
3845 | ||
3846 | return entry; | |
3847 | } | |
3848 | ||
3849 | /* Create an entry in the branch hash table. */ | |
3850 | ||
3851 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3852 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3853 | struct bfd_hash_table *table, | |
3854 | const char *string) | |
721956f4 AM |
3855 | { |
3856 | /* Allocate the structure if it has not already been allocated by a | |
3857 | subclass. */ | |
3858 | if (entry == NULL) | |
3859 | { | |
3860 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3861 | if (entry == NULL) | |
3862 | return entry; | |
3863 | } | |
3864 | ||
3865 | /* Call the allocation method of the superclass. */ | |
3866 | entry = bfd_hash_newfunc (entry, table, string); | |
3867 | if (entry != NULL) | |
3868 | { | |
3869 | struct ppc_branch_hash_entry *eh; | |
3870 | ||
3871 | /* Initialize the local fields. */ | |
3872 | eh = (struct ppc_branch_hash_entry *) entry; | |
3873 | eh->offset = 0; | |
3874 | eh->iter = 0; | |
3875 | } | |
3876 | ||
3877 | return entry; | |
3878 | } | |
3879 | ||
65f38f15 AM |
3880 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3881 | ||
3882 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3883 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3884 | struct bfd_hash_table *table, | |
3885 | const char *string) | |
65f38f15 AM |
3886 | { |
3887 | /* Allocate the structure if it has not already been allocated by a | |
3888 | subclass. */ | |
3889 | if (entry == NULL) | |
3890 | { | |
3891 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3892 | if (entry == NULL) | |
3893 | return entry; | |
3894 | } | |
3895 | ||
3896 | /* Call the allocation method of the superclass. */ | |
3897 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3898 | if (entry != NULL) | |
3899 | { | |
3900 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3901 | ||
b3fac117 | 3902 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3903 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3904 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3905 | ||
3906 | /* When making function calls, old ABI code references function entry | |
3907 | points (dot symbols), while new ABI code references the function | |
3908 | descriptor symbol. We need to make any combination of reference and | |
3909 | definition work together, without breaking archive linking. | |
3910 | ||
3911 | For a defined function "foo" and an undefined call to "bar": | |
3912 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3913 | "bar" too). | |
3914 | A new object defines "foo" and references "bar". | |
3915 | ||
3916 | A new object thus has no problem with its undefined symbols being | |
3917 | satisfied by definitions in an old object. On the other hand, the | |
3918 | old object won't have ".bar" satisfied by a new object. | |
3919 | ||
3920 | Keep a list of newly added dot-symbols. */ | |
3921 | ||
3922 | if (string[0] == '.') | |
3923 | { | |
3924 | struct ppc_link_hash_table *htab; | |
3925 | ||
3926 | htab = (struct ppc_link_hash_table *) table; | |
3927 | eh->u.next_dot_sym = htab->dot_syms; | |
3928 | htab->dot_syms = eh; | |
3929 | } | |
65f38f15 AM |
3930 | } |
3931 | ||
3932 | return entry; | |
3933 | } | |
3934 | ||
3935 | /* Create a ppc64 ELF linker hash table. */ | |
3936 | ||
3937 | static struct bfd_link_hash_table * | |
4ce794b7 | 3938 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3939 | { |
3940 | struct ppc_link_hash_table *htab; | |
3941 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3942 | ||
4ce794b7 | 3943 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3944 | if (htab == NULL) |
3945 | return NULL; | |
3946 | ||
66eb6687 AM |
3947 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3948 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3949 | { |
e2d34d7d | 3950 | free (htab); |
65f38f15 AM |
3951 | return NULL; |
3952 | } | |
3953 | ||
721956f4 | 3954 | /* Init the stub hash table too. */ |
66eb6687 AM |
3955 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3956 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3957 | return NULL; |
3958 | ||
3959 | /* And the branch hash table. */ | |
66eb6687 AM |
3960 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3961 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3962 | return NULL; |
3963 | ||
3254fd24 AM |
3964 | /* Initializing two fields of the union is just cosmetic. We really |
3965 | only care about glist, but when compiled on a 32-bit host the | |
3966 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3967 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3968 | htab->elf.init_got_refcount.refcount = 0; |
3969 | htab->elf.init_got_refcount.glist = NULL; | |
3970 | htab->elf.init_plt_refcount.refcount = 0; | |
3971 | htab->elf.init_plt_refcount.glist = NULL; | |
3972 | htab->elf.init_got_offset.offset = 0; | |
3973 | htab->elf.init_got_offset.glist = NULL; | |
3974 | htab->elf.init_plt_offset.offset = 0; | |
3975 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3976 | |
65f38f15 AM |
3977 | return &htab->elf.root; |
3978 | } | |
3979 | ||
721956f4 AM |
3980 | /* Free the derived linker hash table. */ |
3981 | ||
3982 | static void | |
4ce794b7 | 3983 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3984 | { |
3985 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3986 | ||
3987 | bfd_hash_table_free (&ret->stub_hash_table); | |
3988 | bfd_hash_table_free (&ret->branch_hash_table); | |
3989 | _bfd_generic_link_hash_table_free (hash); | |
3990 | } | |
3991 | ||
e717da7e AM |
3992 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3993 | ||
3994 | void | |
3995 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3996 | { | |
3997 | struct ppc_link_hash_table *htab; | |
3998 | ||
3999 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4000 | ||
4001 | /* Always hook our dynamic sections into the first bfd, which is the | |
4002 | linker created stub bfd. This ensures that the GOT header is at | |
4003 | the start of the output TOC section. */ | |
4004 | htab = ppc_hash_table (info); | |
4005 | htab->stub_bfd = abfd; | |
4006 | htab->elf.dynobj = abfd; | |
4007 | } | |
4008 | ||
721956f4 AM |
4009 | /* Build a name for an entry in the stub hash table. */ |
4010 | ||
4011 | static char * | |
4ce794b7 AM |
4012 | ppc_stub_name (const asection *input_section, |
4013 | const asection *sym_sec, | |
4014 | const struct ppc_link_hash_entry *h, | |
4015 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4016 | { |
4017 | char *stub_name; | |
4018 | bfd_size_type len; | |
4019 | ||
4020 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4021 | offsets from a sym as a branch target? In fact, we could | |
4022 | probably assume the addend is always zero. */ | |
4023 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4024 | ||
4025 | if (h) | |
4026 | { | |
4027 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4028 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4029 | if (stub_name == NULL) |
4030 | return stub_name; | |
4031 | ||
4032 | sprintf (stub_name, "%08x.%s+%x", | |
4033 | input_section->id & 0xffffffff, | |
4034 | h->elf.root.root.string, | |
4035 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4036 | } |
4037 | else | |
4038 | { | |
ad8e1ba5 | 4039 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4040 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4041 | if (stub_name == NULL) |
4042 | return stub_name; | |
4043 | ||
4044 | sprintf (stub_name, "%08x.%x:%x+%x", | |
4045 | input_section->id & 0xffffffff, | |
4046 | sym_sec->id & 0xffffffff, | |
4047 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4048 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4049 | } |
ee75fd95 AM |
4050 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
4051 | stub_name[len - 2] = 0; | |
721956f4 AM |
4052 | return stub_name; |
4053 | } | |
4054 | ||
4055 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4056 | creating the stub name takes a bit of time. */ | |
4057 | ||
4058 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4059 | ppc_get_stub_entry (const asection *input_section, |
4060 | const asection *sym_sec, | |
039b3fef | 4061 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4062 | const Elf_Internal_Rela *rel, |
4063 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4064 | { |
4065 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4066 | const asection *id_sec; |
4067 | ||
4068 | /* If this input section is part of a group of sections sharing one | |
4069 | stub section, then use the id of the first section in the group. | |
4070 | Stub names need to include a section id, as there may well be | |
4071 | more than one stub used to reach say, printf, and we need to | |
4072 | distinguish between them. */ | |
4073 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4074 | ||
b3fac117 AM |
4075 | if (h != NULL && h->u.stub_cache != NULL |
4076 | && h->u.stub_cache->h == h | |
4077 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4078 | { |
b3fac117 | 4079 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4080 | } |
4081 | else | |
4082 | { | |
4083 | char *stub_name; | |
4084 | ||
4085 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4086 | if (stub_name == NULL) | |
4087 | return NULL; | |
4088 | ||
4089 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4090 | stub_name, FALSE, FALSE); |
721956f4 | 4091 | if (h != NULL) |
b3fac117 | 4092 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4093 | |
4094 | free (stub_name); | |
4095 | } | |
4096 | ||
4097 | return stub_entry; | |
4098 | } | |
4099 | ||
4100 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4101 | stub entry are initialised. */ | |
4102 | ||
4103 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4104 | ppc_add_stub (const char *stub_name, |
4105 | asection *section, | |
4106 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4107 | { |
4108 | asection *link_sec; | |
4109 | asection *stub_sec; | |
4110 | struct ppc_stub_hash_entry *stub_entry; | |
4111 | ||
4112 | link_sec = htab->stub_group[section->id].link_sec; | |
4113 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4114 | if (stub_sec == NULL) | |
4115 | { | |
4116 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4117 | if (stub_sec == NULL) | |
4118 | { | |
d4c88bbb | 4119 | size_t namelen; |
721956f4 AM |
4120 | bfd_size_type len; |
4121 | char *s_name; | |
4122 | ||
d4c88bbb AM |
4123 | namelen = strlen (link_sec->name); |
4124 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4125 | s_name = bfd_alloc (htab->stub_bfd, len); |
4126 | if (s_name == NULL) | |
4127 | return NULL; | |
4128 | ||
d4c88bbb AM |
4129 | memcpy (s_name, link_sec->name, namelen); |
4130 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4131 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4132 | if (stub_sec == NULL) | |
4133 | return NULL; | |
4134 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4135 | } | |
4136 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4137 | } | |
4138 | ||
4139 | /* Enter this entry into the linker stub hash table. */ | |
4140 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4141 | TRUE, FALSE); |
721956f4 AM |
4142 | if (stub_entry == NULL) |
4143 | { | |
d003868e AM |
4144 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
4145 | section->owner, stub_name); | |
721956f4 AM |
4146 | return NULL; |
4147 | } | |
4148 | ||
4149 | stub_entry->stub_sec = stub_sec; | |
4150 | stub_entry->stub_offset = 0; | |
4151 | stub_entry->id_sec = link_sec; | |
4152 | return stub_entry; | |
4153 | } | |
4154 | ||
82bd7b59 AM |
4155 | /* Create sections for linker generated code. */ |
4156 | ||
b34976b6 | 4157 | static bfd_boolean |
4ce794b7 | 4158 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4159 | { |
4160 | struct ppc_link_hash_table *htab; | |
4161 | flagword flags; | |
4162 | ||
4163 | htab = ppc_hash_table (info); | |
4164 | ||
4165 | /* Create .sfpr for code to save and restore fp regs. */ | |
4166 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4167 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4168 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4169 | flags); | |
82bd7b59 | 4170 | if (htab->sfpr == NULL |
82bd7b59 | 4171 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4172 | return FALSE; |
82bd7b59 | 4173 | |
721956f4 | 4174 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4175 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4176 | flags); | |
4ce794b7 | 4177 | if (htab->glink == NULL |
ee4bf8d2 | 4178 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4179 | return FALSE; |
82bd7b59 | 4180 | |
e054468f AM |
4181 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
4182 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4183 | if (htab->iplt == NULL | |
4184 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4185 | return FALSE; | |
4186 | ||
4187 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4188 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4189 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4190 | ".rela.iplt", | |
4191 | flags); | |
4192 | if (htab->reliplt == NULL | |
4193 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4194 | return FALSE; | |
4195 | ||
c456f082 | 4196 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4197 | flags = (SEC_ALLOC | SEC_LOAD |
4198 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4199 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4200 | flags); | |
4ce794b7 | 4201 | if (htab->brlt == NULL |
4ce794b7 | 4202 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4203 | return FALSE; |
721956f4 | 4204 | |
e4e0193e | 4205 | if (!info->shared) |
c456f082 AM |
4206 | return TRUE; |
4207 | ||
e4e0193e AM |
4208 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4209 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4210 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4211 | ".rela.branch_lt", | |
4212 | flags); | |
e054468f | 4213 | if (htab->relbrlt == NULL |
c456f082 AM |
4214 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
4215 | return FALSE; | |
4216 | ||
b34976b6 | 4217 | return TRUE; |
82bd7b59 AM |
4218 | } |
4219 | ||
e717da7e AM |
4220 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4221 | not already done. */ | |
65f38f15 | 4222 | |
b34976b6 | 4223 | static bfd_boolean |
e717da7e | 4224 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4225 | { |
e717da7e AM |
4226 | asection *got, *relgot; |
4227 | flagword flags; | |
4228 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4229 | |
0c8d6e5c | 4230 | if (!is_ppc64_elf (abfd)) |
0ffa91dd NC |
4231 | return FALSE; |
4232 | ||
4ce794b7 | 4233 | if (!htab->got) |
e717da7e AM |
4234 | { |
4235 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4236 | return FALSE; | |
4237 | ||
4238 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4239 | if (!htab->got) | |
4240 | abort (); | |
4241 | } | |
4242 | ||
4243 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4244 | | SEC_LINKER_CREATED); | |
4245 | ||
c456f082 | 4246 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4247 | if (!got |
e717da7e AM |
4248 | || !bfd_set_section_alignment (abfd, got, 3)) |
4249 | return FALSE; | |
65f38f15 | 4250 | |
c456f082 AM |
4251 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4252 | flags | SEC_READONLY); | |
e717da7e | 4253 | if (!relgot |
e717da7e | 4254 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4255 | return FALSE; |
e717da7e AM |
4256 | |
4257 | ppc64_elf_tdata (abfd)->got = got; | |
4258 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4259 | return TRUE; |
65f38f15 | 4260 | } |
5bd4f169 | 4261 | |
82bd7b59 | 4262 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4263 | |
b34976b6 | 4264 | static bfd_boolean |
4ce794b7 | 4265 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4266 | { |
65f38f15 | 4267 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4268 | |
65f38f15 | 4269 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4270 | return FALSE; |
65f38f15 | 4271 | |
e717da7e AM |
4272 | htab = ppc_hash_table (info); |
4273 | if (!htab->got) | |
4274 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4275 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4276 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4277 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4278 | if (!info->shared) |
4ce794b7 | 4279 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4280 | |
e717da7e | 4281 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4282 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4283 | abort (); |
4284 | ||
b34976b6 | 4285 | return TRUE; |
5bd4f169 AM |
4286 | } |
4287 | ||
b31867b6 AM |
4288 | /* Follow indirect and warning symbol links. */ |
4289 | ||
4290 | static inline struct bfd_link_hash_entry * | |
4291 | follow_link (struct bfd_link_hash_entry *h) | |
4292 | { | |
4293 | while (h->type == bfd_link_hash_indirect | |
4294 | || h->type == bfd_link_hash_warning) | |
4295 | h = h->u.i.link; | |
4296 | return h; | |
4297 | } | |
4298 | ||
4299 | static inline struct elf_link_hash_entry * | |
4300 | elf_follow_link (struct elf_link_hash_entry *h) | |
4301 | { | |
4302 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4303 | } | |
4304 | ||
4305 | static inline struct ppc_link_hash_entry * | |
4306 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4307 | { | |
4308 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4309 | } | |
4310 | ||
40d16e0b AM |
4311 | /* Merge PLT info on FROM with that on TO. */ |
4312 | ||
4313 | static void | |
4314 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4315 | struct ppc_link_hash_entry *to) | |
4316 | { | |
4317 | if (from->elf.plt.plist != NULL) | |
4318 | { | |
4319 | if (to->elf.plt.plist != NULL) | |
4320 | { | |
4321 | struct plt_entry **entp; | |
4322 | struct plt_entry *ent; | |
4323 | ||
4324 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4325 | { | |
4326 | struct plt_entry *dent; | |
4327 | ||
4328 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4329 | if (dent->addend == ent->addend) | |
4330 | { | |
4331 | dent->plt.refcount += ent->plt.refcount; | |
4332 | *entp = ent->next; | |
4333 | break; | |
4334 | } | |
4335 | if (dent == NULL) | |
4336 | entp = &ent->next; | |
4337 | } | |
4338 | *entp = to->elf.plt.plist; | |
4339 | } | |
4340 | ||
4341 | to->elf.plt.plist = from->elf.plt.plist; | |
4342 | from->elf.plt.plist = NULL; | |
4343 | } | |
4344 | } | |
4345 | ||
65f38f15 AM |
4346 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4347 | ||
4348 | static void | |
fcfa13d2 AM |
4349 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4350 | struct elf_link_hash_entry *dir, | |
4351 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4352 | { |
4353 | struct ppc_link_hash_entry *edir, *eind; | |
4354 | ||
4355 | edir = (struct ppc_link_hash_entry *) dir; | |
4356 | eind = (struct ppc_link_hash_entry *) ind; | |
4357 | ||
411e1bfb | 4358 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4359 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4360 | { |
bbd7ec4a AM |
4361 | if (edir->dyn_relocs != NULL) |
4362 | { | |
4363 | struct ppc_dyn_relocs **pp; | |
4364 | struct ppc_dyn_relocs *p; | |
4365 | ||
fcfa13d2 | 4366 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4367 | list. Merge any entries against the same section. */ |
4368 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4369 | { | |
4370 | struct ppc_dyn_relocs *q; | |
4371 | ||
4372 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4373 | if (q->sec == p->sec) | |
4374 | { | |
4375 | q->pc_count += p->pc_count; | |
4376 | q->count += p->count; | |
4377 | *pp = p->next; | |
4378 | break; | |
4379 | } | |
4380 | if (q == NULL) | |
4381 | pp = &p->next; | |
4382 | } | |
4383 | *pp = edir->dyn_relocs; | |
4384 | } | |
4385 | ||
65f38f15 AM |
4386 | edir->dyn_relocs = eind->dyn_relocs; |
4387 | eind->dyn_relocs = NULL; | |
4388 | } | |
65f38f15 | 4389 | |
6349e628 AM |
4390 | edir->is_func |= eind->is_func; |
4391 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4392 | edir->tls_mask |= eind->tls_mask; |
b31867b6 AM |
4393 | if (eind->oh != NULL) |
4394 | edir->oh = ppc_follow_link (eind->oh); | |
6349e628 | 4395 | |
81848ca0 | 4396 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4397 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4398 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4399 | if (!(ELIMINATE_COPY_RELOCS |
4400 | && eind->elf.root.type != bfd_link_hash_indirect | |
4401 | && edir->elf.dynamic_adjusted)) | |
4402 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4403 | |
f5385ebf AM |
4404 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4405 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4406 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4407 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4408 | |
4409 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4410 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4411 | return; | |
4412 | ||
81848ca0 AM |
4413 | /* Copy over got entries that we may have already seen to the |
4414 | symbol which just became indirect. */ | |
411e1bfb AM |
4415 | if (eind->elf.got.glist != NULL) |
4416 | { | |
4417 | if (edir->elf.got.glist != NULL) | |
4418 | { | |
4419 | struct got_entry **entp; | |
4420 | struct got_entry *ent; | |
4421 | ||
4422 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4423 | { | |
4424 | struct got_entry *dent; | |
4425 | ||
4426 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4427 | if (dent->addend == ent->addend | |
e717da7e | 4428 | && dent->owner == ent->owner |
411e1bfb AM |
4429 | && dent->tls_type == ent->tls_type) |
4430 | { | |
4431 | dent->got.refcount += ent->got.refcount; | |
4432 | *entp = ent->next; | |
4433 | break; | |
4434 | } | |
4435 | if (dent == NULL) | |
4436 | entp = &ent->next; | |
4437 | } | |
4438 | *entp = edir->elf.got.glist; | |
4439 | } | |
4440 | ||
4441 | edir->elf.got.glist = eind->elf.got.glist; | |
4442 | eind->elf.got.glist = NULL; | |
4443 | } | |
4444 | ||
4445 | /* And plt entries. */ | |
40d16e0b | 4446 | move_plt_plist (eind, edir); |
411e1bfb | 4447 | |
fcfa13d2 | 4448 | if (eind->elf.dynindx != -1) |
411e1bfb | 4449 | { |
fcfa13d2 AM |
4450 | if (edir->elf.dynindx != -1) |
4451 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4452 | edir->elf.dynstr_index); | |
411e1bfb AM |
4453 | edir->elf.dynindx = eind->elf.dynindx; |
4454 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4455 | eind->elf.dynindx = -1; | |
4456 | eind->elf.dynstr_index = 0; | |
4457 | } | |
411e1bfb AM |
4458 | } |
4459 | ||
8387904d AM |
4460 | /* Find the function descriptor hash entry from the given function code |
4461 | hash entry FH. Link the entries via their OH fields. */ | |
4462 | ||
4463 | static struct ppc_link_hash_entry * | |
b31867b6 | 4464 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4465 | { |
4466 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4467 | ||
4468 | if (fdh == NULL) | |
4469 | { | |
4470 | const char *fd_name = fh->elf.root.root.string + 1; | |
4471 | ||
4472 | fdh = (struct ppc_link_hash_entry *) | |
4473 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4474 | if (fdh == NULL) |
4475 | return fdh; | |
4476 | ||
4477 | fdh->is_func_descriptor = 1; | |
4478 | fdh->oh = fh; | |
4479 | fh->is_func = 1; | |
4480 | fh->oh = fdh; | |
8387904d AM |
4481 | } |
4482 | ||
b31867b6 | 4483 | return ppc_follow_link (fdh); |
8387904d AM |
4484 | } |
4485 | ||
bb700d78 AM |
4486 | /* Make a fake function descriptor sym for the code sym FH. */ |
4487 | ||
4488 | static struct ppc_link_hash_entry * | |
4489 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4490 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4491 | { |
4492 | bfd *abfd; | |
4493 | asymbol *newsym; | |
4494 | struct bfd_link_hash_entry *bh; | |
4495 | struct ppc_link_hash_entry *fdh; | |
4496 | ||
4497 | abfd = fh->elf.root.u.undef.abfd; | |
4498 | newsym = bfd_make_empty_symbol (abfd); | |
4499 | newsym->name = fh->elf.root.root.string + 1; | |
4500 | newsym->section = bfd_und_section_ptr; | |
4501 | newsym->value = 0; | |
908b32fc | 4502 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4503 | |
4504 | bh = NULL; | |
4505 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4506 | newsym->flags, newsym->section, | |
4507 | newsym->value, NULL, FALSE, FALSE, | |
4508 | &bh)) | |
4509 | return NULL; | |
4510 | ||
4511 | fdh = (struct ppc_link_hash_entry *) bh; | |
4512 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4513 | fdh->fake = 1; |
4514 | fdh->is_func_descriptor = 1; | |
4515 | fdh->oh = fh; | |
4516 | fh->is_func = 1; | |
4517 | fh->oh = fdh; | |
bb700d78 AM |
4518 | return fdh; |
4519 | } | |
4520 | ||
8387904d AM |
4521 | /* Fix function descriptor symbols defined in .opd sections to be |
4522 | function type. */ | |
555cd476 AM |
4523 | |
4524 | static bfd_boolean | |
b3fac117 | 4525 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
e054468f | 4526 | struct bfd_link_info *info, |
555cd476 | 4527 | Elf_Internal_Sym *isym, |
b3fac117 | 4528 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4529 | flagword *flags ATTRIBUTE_UNUSED, |
4530 | asection **sec, | |
4531 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4532 | { | |
e054468f AM |
4533 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
4534 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4535 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
4536 | ; | |
4537 | else if (*sec != NULL | |
4538 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4539 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4540 | |
555cd476 AM |
4541 | return TRUE; |
4542 | } | |
4543 | ||
8387904d | 4544 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4545 | inclusion of a new ABI object archive that defines "bar". |
4546 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4547 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4548 | |
4549 | static struct elf_link_hash_entry * | |
4550 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4551 | struct bfd_link_info *info, | |
4552 | const char *name) | |
4553 | { | |
4554 | struct elf_link_hash_entry *h; | |
4555 | char *dot_name; | |
4556 | size_t len; | |
4557 | ||
4558 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4559 | if (h != NULL |
4560 | /* Don't return this sym if it is a fake function descriptor | |
4561 | created by add_symbol_adjust. */ | |
4562 | && !(h->root.type == bfd_link_hash_undefweak | |
4563 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4564 | return h; |
4565 | ||
4566 | if (name[0] == '.') | |
4567 | return h; | |
4568 | ||
4569 | len = strlen (name); | |
4570 | dot_name = bfd_alloc (abfd, len + 2); | |
4571 | if (dot_name == NULL) | |
4572 | return (struct elf_link_hash_entry *) 0 - 1; | |
4573 | dot_name[0] = '.'; | |
4574 | memcpy (dot_name + 1, name, len + 1); | |
4575 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4576 | bfd_release (abfd, dot_name); | |
4577 | return h; | |
4578 | } | |
4579 | ||
4580 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4581 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4582 | are made weak. This stops later archive searches from including an | |
4583 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4584 | prevents the linker complaining about undefined symbols. |
4585 | We also check and correct mismatched symbol visibility here. The | |
4586 | most restrictive visibility of the function descriptor and the | |
4587 | function entry symbol is used. */ | |
8387904d AM |
4588 | |
4589 | static bfd_boolean | |
b3fac117 | 4590 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4591 | { |
8387904d AM |
4592 | struct ppc_link_hash_table *htab; |
4593 | struct ppc_link_hash_entry *fdh; | |
4594 | ||
b3fac117 | 4595 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4596 | return TRUE; |
4597 | ||
b3fac117 AM |
4598 | if (eh->elf.root.type == bfd_link_hash_warning) |
4599 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4600 | |
b3fac117 AM |
4601 | if (eh->elf.root.root.string[0] != '.') |
4602 | abort (); | |
8387904d | 4603 | |
b3fac117 | 4604 | htab = ppc_hash_table (info); |
b31867b6 AM |
4605 | fdh = lookup_fdh (eh, htab); |
4606 | if (fdh == NULL) | |
4607 | { | |
4608 | if (!info->relocatable | |
4609 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4610 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4611 | && eh->elf.ref_regular) | |
4612 | { | |
4613 | /* Make an undefweak function descriptor sym, which is enough to | |
4614 | pull in an --as-needed shared lib, but won't cause link | |
4615 | errors. Archives are handled elsewhere. */ | |
4616 | fdh = make_fdh (info, eh); | |
4617 | if (fdh == NULL) | |
4618 | return FALSE; | |
4619 | fdh->elf.ref_regular = 1; | |
4620 | } | |
bb700d78 | 4621 | } |
b31867b6 | 4622 | else |
8387904d | 4623 | { |
35b0ce59 AM |
4624 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4625 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4626 | if (entry_vis < descr_vis) | |
4627 | fdh->elf.other += entry_vis - descr_vis; | |
4628 | else if (entry_vis > descr_vis) | |
4629 | eh->elf.other += descr_vis - entry_vis; | |
4630 | ||
e87d886e AM |
4631 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4632 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4633 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4634 | { |
4635 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4636 | eh->was_undefined = 1; | |
4637 | htab->twiddled_syms = 1; | |
4638 | } | |
8387904d | 4639 | } |
99877b66 | 4640 | |
8387904d AM |
4641 | return TRUE; |
4642 | } | |
4643 | ||
b3fac117 AM |
4644 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4645 | ||
8387904d | 4646 | static bfd_boolean |
7d9616d7 | 4647 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4648 | { |
99877b66 | 4649 | struct ppc_link_hash_table *htab; |
b3fac117 | 4650 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4651 | |
99877b66 | 4652 | htab = ppc_hash_table (info); |
0c8d6e5c | 4653 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 AM |
4654 | return TRUE; |
4655 | ||
0c8d6e5c | 4656 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4657 | { |
4658 | p = &htab->dot_syms; | |
4659 | while ((eh = *p) != NULL) | |
4660 | { | |
4661 | *p = NULL; | |
4662 | if (!add_symbol_adjust (eh, info)) | |
4663 | return FALSE; | |
4664 | p = &eh->u.next_dot_sym; | |
4665 | } | |
4666 | } | |
4667 | ||
4668 | /* Clear the list for non-ppc64 input files. */ | |
4669 | p = &htab->dot_syms; | |
4670 | while ((eh = *p) != NULL) | |
4671 | { | |
4672 | *p = NULL; | |
4673 | p = &eh->u.next_dot_sym; | |
4674 | } | |
99877b66 AM |
4675 | |
4676 | /* We need to fix the undefs list for any syms we have twiddled to | |
4677 | undef_weak. */ | |
4678 | if (htab->twiddled_syms) | |
4679 | { | |
77cfaee6 | 4680 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4681 | htab->twiddled_syms = 0; |
4682 | } | |
b3fac117 | 4683 | return TRUE; |
8387904d AM |
4684 | } |
4685 | ||
97fed1c9 JJ |
4686 | /* Undo hash table changes when an --as-needed input file is determined |
4687 | not to be needed. */ | |
4688 | ||
4689 | static bfd_boolean | |
4690 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4691 | struct bfd_link_info *info) | |
4692 | { | |
4693 | ppc_hash_table (info)->dot_syms = NULL; | |
4694 | return TRUE; | |
4695 | } | |
4696 | ||
e054468f | 4697 | static struct plt_entry ** |
4ce794b7 AM |
4698 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4699 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4700 | { |
4701 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4702 | struct plt_entry **local_plt; |
e7b938ca | 4703 | char *local_got_tls_masks; |
411e1bfb AM |
4704 | |
4705 | if (local_got_ents == NULL) | |
4706 | { | |
4707 | bfd_size_type size = symtab_hdr->sh_info; | |
4708 | ||
e054468f AM |
4709 | size *= (sizeof (*local_got_ents) |
4710 | + sizeof (*local_plt) | |
4711 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4712 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4713 | if (local_got_ents == NULL) |
e054468f | 4714 | return NULL; |
411e1bfb AM |
4715 | elf_local_got_ents (abfd) = local_got_ents; |
4716 | } | |
4717 | ||
e054468f | 4718 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4719 | { |
4720 | struct got_entry *ent; | |
4721 | ||
4722 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4723 | if (ent->addend == r_addend |
4724 | && ent->owner == abfd | |
4725 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4726 | break; |
4727 | if (ent == NULL) | |
4728 | { | |
4729 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4730 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4731 | if (ent == NULL) |
4732 | return FALSE; | |
4733 | ent->next = local_got_ents[r_symndx]; | |
4734 | ent->addend = r_addend; | |
e717da7e | 4735 | ent->owner = abfd; |
411e1bfb AM |
4736 | ent->tls_type = tls_type; |
4737 | ent->got.refcount = 0; | |
4738 | local_got_ents[r_symndx] = ent; | |
4739 | } | |
4740 | ent->got.refcount += 1; | |
4741 | } | |
4742 | ||
e054468f AM |
4743 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
4744 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 4745 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4746 | |
4747 | return local_plt + r_symndx; | |
65f38f15 AM |
4748 | } |
4749 | ||
411e1bfb | 4750 | static bfd_boolean |
e054468f | 4751 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4752 | { |
411e1bfb | 4753 | struct plt_entry *ent; |
1e2f5b6e | 4754 | |
e054468f | 4755 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4756 | if (ent->addend == addend) |
4757 | break; | |
4758 | if (ent == NULL) | |
1e2f5b6e | 4759 | { |
411e1bfb | 4760 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4761 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4762 | if (ent == NULL) |
4763 | return FALSE; | |
e054468f | 4764 | ent->next = *plist; |
411e1bfb AM |
4765 | ent->addend = addend; |
4766 | ent->plt.refcount = 0; | |
e054468f | 4767 | *plist = ent; |
1e2f5b6e | 4768 | } |
411e1bfb | 4769 | ent->plt.refcount += 1; |
b34976b6 | 4770 | return TRUE; |
1e2f5b6e AM |
4771 | } |
4772 | ||
e054468f AM |
4773 | static bfd_boolean |
4774 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4775 | { | |
4776 | return (r_type == R_PPC64_REL24 | |
4777 | || r_type == R_PPC64_REL14 | |
4778 | || r_type == R_PPC64_REL14_BRTAKEN | |
4779 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4780 | || r_type == R_PPC64_ADDR24 | |
4781 | || r_type == R_PPC64_ADDR14 | |
4782 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4783 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4784 | } | |
4785 | ||
5bd4f169 | 4786 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4787 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4788 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4789 | |
b34976b6 | 4790 | static bfd_boolean |
4ce794b7 AM |
4791 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4792 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4793 | { |
65f38f15 | 4794 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4795 | Elf_Internal_Shdr *symtab_hdr; |
4796 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4797 | const Elf_Internal_Rela *rel; | |
4798 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4799 | asection *sreloc; |
1e2f5b6e | 4800 | asection **opd_sym_map; |
3a71aa26 | 4801 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4802 | |
1049f94e | 4803 | if (info->relocatable) |
b34976b6 | 4804 | return TRUE; |
5bd4f169 | 4805 | |
680a3378 AM |
4806 | /* Don't do anything special with non-loaded, non-alloced sections. |
4807 | In particular, any relocs in such sections should not affect GOT | |
4808 | and PLT reference counting (ie. we don't allow them to create GOT | |
4809 | or PLT entries), there's no possibility or desire to optimize TLS | |
4810 | relocs, and there's not much point in propagating relocs to shared | |
4811 | libs that the dynamic linker won't relocate. */ | |
4812 | if ((sec->flags & SEC_ALLOC) == 0) | |
4813 | return TRUE; | |
4814 | ||
0c8d6e5c | 4815 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4816 | |
65f38f15 | 4817 | htab = ppc_hash_table (info); |
3a71aa26 AM |
4818 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4819 | FALSE, FALSE, TRUE); | |
4820 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4821 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4822 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4823 | |
4824 | sym_hashes = elf_sym_hashes (abfd); | |
4825 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4826 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4827 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4828 | |
4829 | sreloc = NULL; | |
1e2f5b6e AM |
4830 | opd_sym_map = NULL; |
4831 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4832 | { | |
4833 | /* Garbage collection needs some extra help with .opd sections. | |
4834 | We don't want to necessarily keep everything referenced by | |
4835 | relocs in .opd, as that would keep all functions. Instead, | |
4836 | if we reference an .opd symbol (a function descriptor), we | |
4837 | want to keep the function code symbol's section. This is | |
4838 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4839 | information about the associated function section. */ |
1e2f5b6e AM |
4840 | bfd_size_type amt; |
4841 | ||
74f0fb50 | 4842 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4843 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4844 | if (opd_sym_map == NULL) |
b34976b6 | 4845 | return FALSE; |
74f0fb50 | 4846 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4847 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4848 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4849 | } |
5bd4f169 | 4850 | |
82bd7b59 AM |
4851 | if (htab->sfpr == NULL |
4852 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4853 | return FALSE; |
82bd7b59 | 4854 | |
5bd4f169 AM |
4855 | rel_end = relocs + sec->reloc_count; |
4856 | for (rel = relocs; rel < rel_end; rel++) | |
4857 | { | |
4858 | unsigned long r_symndx; | |
4859 | struct elf_link_hash_entry *h; | |
04c9666a | 4860 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4861 | int tls_type; |
7c8fe5c4 | 4862 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4863 | struct plt_entry **ifunc; |
5bd4f169 AM |
4864 | |
4865 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4866 | if (r_symndx < symtab_hdr->sh_info) | |
4867 | h = NULL; | |
4868 | else | |
973a3492 L |
4869 | { |
4870 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4871 | h = elf_follow_link (h); |
973a3492 | 4872 | } |
5bd4f169 | 4873 | |
727fc41e | 4874 | tls_type = 0; |
e054468f | 4875 | ifunc = NULL; |
25f23106 AM |
4876 | if (h != NULL) |
4877 | { | |
4878 | if (h->type == STT_GNU_IFUNC) | |
4879 | { | |
4880 | h->needs_plt = 1; | |
4881 | ifunc = &h->plt.plist; | |
4882 | } | |
4883 | } | |
4884 | else | |
4885 | { | |
4886 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4887 | abfd, r_symndx); | |
4888 | if (isym == NULL) | |
4889 | return FALSE; | |
4890 | ||
4891 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4892 | { | |
4893 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4894 | rel->r_addend, PLT_IFUNC); | |
4895 | if (ifunc == NULL) | |
4896 | return FALSE; | |
4897 | } | |
4898 | } | |
4ce794b7 | 4899 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
4900 | if (is_branch_reloc (r_type)) |
4901 | { | |
4902 | if (h != NULL && (h == tga || h == dottga)) | |
4903 | { | |
4904 | if (rel != relocs | |
4905 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4906 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4907 | /* We have a new-style __tls_get_addr call with a marker | |
4908 | reloc. */ | |
4909 | ; | |
4910 | else | |
4911 | /* Mark this section as having an old-style call. */ | |
4912 | sec->has_tls_get_addr_call = 1; | |
4913 | } | |
727fc41e | 4914 | |
e054468f | 4915 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
4916 | if (ifunc != NULL |
4917 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
4918 | return FALSE; | |
4919 | } | |
727fc41e | 4920 | |
a33d1f77 | 4921 | switch (r_type) |
5bd4f169 | 4922 | { |
727fc41e AM |
4923 | case R_PPC64_TLSGD: |
4924 | case R_PPC64_TLSLD: | |
4925 | /* These special tls relocs tie a call to __tls_get_addr with | |
4926 | its parameter symbol. */ | |
4927 | break; | |
4928 | ||
411e1bfb AM |
4929 | case R_PPC64_GOT_TLSLD16: |
4930 | case R_PPC64_GOT_TLSLD16_LO: | |
4931 | case R_PPC64_GOT_TLSLD16_HI: | |
4932 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4933 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4934 | goto dogottls; |
4935 | ||
4936 | case R_PPC64_GOT_TLSGD16: | |
4937 | case R_PPC64_GOT_TLSGD16_LO: | |
4938 | case R_PPC64_GOT_TLSGD16_HI: | |
4939 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4940 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4941 | goto dogottls; |
4942 | ||
4943 | case R_PPC64_GOT_TPREL16_DS: | |
4944 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4945 | case R_PPC64_GOT_TPREL16_HI: | |
4946 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4947 | if (!info->executable) |
411e1bfb AM |
4948 | info->flags |= DF_STATIC_TLS; |
4949 | tls_type = TLS_TLS | TLS_TPREL; | |
4950 | goto dogottls; | |
4951 | ||
4952 | case R_PPC64_GOT_DTPREL16_DS: | |
4953 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4954 | case R_PPC64_GOT_DTPREL16_HI: | |
4955 | case R_PPC64_GOT_DTPREL16_HA: | |
4956 | tls_type = TLS_TLS | TLS_DTPREL; | |
4957 | dogottls: | |
4958 | sec->has_tls_reloc = 1; | |
4959 | /* Fall thru */ | |
4960 | ||
5bd4f169 | 4961 | case R_PPC64_GOT16: |
5bd4f169 | 4962 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4963 | case R_PPC64_GOT16_HA: |
4964 | case R_PPC64_GOT16_HI: | |
4965 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4966 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4967 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4968 | sec->has_toc_reloc = 1; |
e717da7e AM |
4969 | if (ppc64_elf_tdata (abfd)->got == NULL |
4970 | && !create_got_section (abfd, info)) | |
b34976b6 | 4971 | return FALSE; |
5bd4f169 AM |
4972 | |
4973 | if (h != NULL) | |
4974 | { | |
411e1bfb AM |
4975 | struct ppc_link_hash_entry *eh; |
4976 | struct got_entry *ent; | |
65f38f15 | 4977 | |
411e1bfb AM |
4978 | eh = (struct ppc_link_hash_entry *) h; |
4979 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4980 | if (ent->addend == rel->r_addend | |
e717da7e | 4981 | && ent->owner == abfd |
411e1bfb AM |
4982 | && ent->tls_type == tls_type) |
4983 | break; | |
4984 | if (ent == NULL) | |
5bd4f169 | 4985 | { |
411e1bfb | 4986 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4987 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4988 | if (ent == NULL) |
b34976b6 | 4989 | return FALSE; |
411e1bfb AM |
4990 | ent->next = eh->elf.got.glist; |
4991 | ent->addend = rel->r_addend; | |
e717da7e | 4992 | ent->owner = abfd; |
411e1bfb AM |
4993 | ent->tls_type = tls_type; |
4994 | ent->got.refcount = 0; | |
4995 | eh->elf.got.glist = ent; | |
5bd4f169 | 4996 | } |
411e1bfb | 4997 | ent->got.refcount += 1; |
e7b938ca | 4998 | eh->tls_mask |= tls_type; |
5bd4f169 | 4999 | } |
411e1bfb AM |
5000 | else |
5001 | /* This is a global offset table entry for a local symbol. */ | |
5002 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5003 | rel->r_addend, tls_type)) | |
5004 | return FALSE; | |
5bd4f169 AM |
5005 | break; |
5006 | ||
5bd4f169 | 5007 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5008 | case R_PPC64_PLT16_HI: |
5009 | case R_PPC64_PLT16_LO: | |
5010 | case R_PPC64_PLT32: | |
5011 | case R_PPC64_PLT64: | |
5bd4f169 | 5012 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5013 | actually build the entry in adjust_dynamic_symbol, |
5014 | because this might be a case of linking PIC code without | |
5015 | linking in any dynamic objects, in which case we don't | |
5016 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5017 | if (h == NULL) |
5018 | { | |
5019 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5020 | table entry for a local symbol. */ |
5bd4f169 | 5021 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5022 | return FALSE; |
5bd4f169 | 5023 | } |
411e1bfb | 5024 | else |
e054468f AM |
5025 | { |
5026 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5027 | return FALSE; | |
5028 | h->needs_plt = 1; | |
5029 | if (h->root.root.string[0] == '.' | |
5030 | && h->root.root.string[1] != '\0') | |
5031 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5032 | } | |
5bd4f169 AM |
5033 | break; |
5034 | ||
5035 | /* The following relocations don't need to propagate the | |
5036 | relocation if linking a shared object since they are | |
5037 | section relative. */ | |
5038 | case R_PPC64_SECTOFF: | |
5039 | case R_PPC64_SECTOFF_LO: | |
5040 | case R_PPC64_SECTOFF_HI: | |
5041 | case R_PPC64_SECTOFF_HA: | |
5042 | case R_PPC64_SECTOFF_DS: | |
5043 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5044 | case R_PPC64_DTPREL16: |
5045 | case R_PPC64_DTPREL16_LO: | |
5046 | case R_PPC64_DTPREL16_HI: | |
5047 | case R_PPC64_DTPREL16_HA: | |
5048 | case R_PPC64_DTPREL16_DS: | |
5049 | case R_PPC64_DTPREL16_LO_DS: | |
5050 | case R_PPC64_DTPREL16_HIGHER: | |
5051 | case R_PPC64_DTPREL16_HIGHERA: | |
5052 | case R_PPC64_DTPREL16_HIGHEST: | |
5053 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5054 | break; |
5055 | ||
ad8e1ba5 | 5056 | /* Nor do these. */ |
25f23106 AM |
5057 | case R_PPC64_REL16: |
5058 | case R_PPC64_REL16_LO: | |
5059 | case R_PPC64_REL16_HI: | |
5060 | case R_PPC64_REL16_HA: | |
5061 | break; | |
5062 | ||
ad8e1ba5 AM |
5063 | case R_PPC64_TOC16: |
5064 | case R_PPC64_TOC16_LO: | |
5065 | case R_PPC64_TOC16_HI: | |
5066 | case R_PPC64_TOC16_HA: | |
5067 | case R_PPC64_TOC16_DS: | |
5068 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 5069 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5070 | break; |
5071 | ||
5bd4f169 AM |
5072 | /* This relocation describes the C++ object vtable hierarchy. |
5073 | Reconstruct it for later use during GC. */ | |
5074 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5075 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5076 | return FALSE; |
5bd4f169 AM |
5077 | break; |
5078 | ||
5079 | /* This relocation describes which C++ vtable entries are actually | |
5080 | used. Record for later use during GC. */ | |
5081 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5082 | BFD_ASSERT (h != NULL); |
5083 | if (h != NULL | |
5084 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5085 | return FALSE; |
5bd4f169 AM |
5086 | break; |
5087 | ||
721956f4 AM |
5088 | case R_PPC64_REL14: |
5089 | case R_PPC64_REL14_BRTAKEN: | |
5090 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5091 | { |
5092 | asection *dest = NULL; | |
5093 | ||
5094 | /* Heuristic: If jumping outside our section, chances are | |
5095 | we are going to need a stub. */ | |
5096 | if (h != NULL) | |
5097 | { | |
5098 | /* If the sym is weak it may be overridden later, so | |
5099 | don't assume we know where a weak sym lives. */ | |
5100 | if (h->root.type == bfd_link_hash_defined) | |
5101 | dest = h->root.u.def.section; | |
5102 | } | |
5103 | else | |
87d72d41 AM |
5104 | { |
5105 | Elf_Internal_Sym *isym; | |
5106 | ||
5107 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5108 | abfd, r_symndx); | |
5109 | if (isym == NULL) | |
5110 | return FALSE; | |
5111 | ||
5112 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5113 | } | |
5114 | ||
220c76dd | 5115 | if (dest != sec) |
7c8fe5c4 | 5116 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5117 | } |
721956f4 AM |
5118 | /* Fall through. */ |
5119 | ||
5d1634d7 | 5120 | case R_PPC64_REL24: |
e054468f | 5121 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5122 | { |
5123 | /* We may need a .plt entry if the function this reloc | |
5124 | refers to is in a shared lib. */ | |
e054468f | 5125 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5126 | return FALSE; |
e054468f AM |
5127 | h->needs_plt = 1; |
5128 | if (h->root.root.string[0] == '.' | |
5129 | && h->root.root.string[1] != '\0') | |
5130 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5131 | if (h == tga || h == dottga) |
411e1bfb | 5132 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5133 | } |
5134 | break; | |
5135 | ||
5136 | case R_PPC64_TPREL64: | |
5137 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5138 | if (!info->executable) |
411e1bfb AM |
5139 | info->flags |= DF_STATIC_TLS; |
5140 | goto dotlstoc; | |
5141 | ||
5142 | case R_PPC64_DTPMOD64: | |
5143 | if (rel + 1 < rel_end | |
5144 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5145 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5146 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5147 | else |
951fd09b | 5148 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5149 | goto dotlstoc; |
5150 | ||
5151 | case R_PPC64_DTPREL64: | |
5152 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5153 | if (rel != relocs | |
5154 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5155 | && rel[-1].r_offset == rel->r_offset - 8) | |
5156 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5157 | Don't mark with TLS_DTPREL. */ | |
5158 | goto dodyn; | |
5159 | ||
5160 | dotlstoc: | |
5161 | sec->has_tls_reloc = 1; | |
5162 | if (h != NULL) | |
5163 | { | |
5164 | struct ppc_link_hash_entry *eh; | |
5165 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5166 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5167 | } |
5168 | else | |
5169 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5170 | rel->r_addend, tls_type)) | |
5171 | return FALSE; | |
5172 | ||
7c8fe5c4 AM |
5173 | ppc64_sec = ppc64_elf_section_data (sec); |
5174 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5175 | { |
3a71aa26 AM |
5176 | bfd_size_type amt; |
5177 | ||
e7b938ca | 5178 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5179 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5180 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5181 | if (ppc64_sec->u.toc.symndx == NULL) | |
5182 | return FALSE; | |
5183 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5184 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5185 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5186 | return FALSE; |
7c8fe5c4 AM |
5187 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5188 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5189 | } |
5190 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5191 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5192 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5193 | |
5194 | /* Mark the second slot of a GD or LD entry. | |
5195 | -1 to indicate GD and -2 to indicate LD. */ | |
5196 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5197 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5198 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5199 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5200 | goto dodyn; |
5201 | ||
5202 | case R_PPC64_TPREL16: | |
5203 | case R_PPC64_TPREL16_LO: | |
5204 | case R_PPC64_TPREL16_HI: | |
5205 | case R_PPC64_TPREL16_HA: | |
5206 | case R_PPC64_TPREL16_DS: | |
5207 | case R_PPC64_TPREL16_LO_DS: | |
5208 | case R_PPC64_TPREL16_HIGHER: | |
5209 | case R_PPC64_TPREL16_HIGHERA: | |
5210 | case R_PPC64_TPREL16_HIGHEST: | |
5211 | case R_PPC64_TPREL16_HIGHESTA: | |
5212 | if (info->shared) | |
5213 | { | |
1d483afe AM |
5214 | if (!info->executable) |
5215 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5216 | goto dodyn; |
5d1634d7 AM |
5217 | } |
5218 | break; | |
5219 | ||
e86ce104 | 5220 | case R_PPC64_ADDR64: |
1e2f5b6e | 5221 | if (opd_sym_map != NULL |
1e2f5b6e | 5222 | && rel + 1 < rel_end |
4ce794b7 | 5223 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5224 | { |
8387904d AM |
5225 | if (h != NULL) |
5226 | { | |
5227 | if (h->root.root.string[0] == '.' | |
5228 | && h->root.root.string[1] != 0 | |
b31867b6 | 5229 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5230 | ; |
5231 | else | |
5232 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5233 | } | |
5234 | else | |
5235 | { | |
5236 | asection *s; | |
87d72d41 | 5237 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5238 | |
87d72d41 AM |
5239 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5240 | abfd, r_symndx); | |
5241 | if (isym == NULL) | |
8387904d | 5242 | return FALSE; |
87d72d41 AM |
5243 | |
5244 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5245 | if (s != NULL && s != sec) | |
3f764659 | 5246 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5247 | } |
1e2f5b6e | 5248 | } |
e86ce104 AM |
5249 | /* Fall through. */ |
5250 | ||
04c9666a | 5251 | case R_PPC64_REL30: |
5bd4f169 | 5252 | case R_PPC64_REL32: |
04c9666a | 5253 | case R_PPC64_REL64: |
65f38f15 AM |
5254 | case R_PPC64_ADDR14: |
5255 | case R_PPC64_ADDR14_BRNTAKEN: | |
5256 | case R_PPC64_ADDR14_BRTAKEN: | |
5257 | case R_PPC64_ADDR16: | |
5258 | case R_PPC64_ADDR16_DS: | |
5259 | case R_PPC64_ADDR16_HA: | |
5260 | case R_PPC64_ADDR16_HI: | |
5261 | case R_PPC64_ADDR16_HIGHER: | |
5262 | case R_PPC64_ADDR16_HIGHERA: | |
5263 | case R_PPC64_ADDR16_HIGHEST: | |
5264 | case R_PPC64_ADDR16_HIGHESTA: | |
5265 | case R_PPC64_ADDR16_LO: | |
5266 | case R_PPC64_ADDR16_LO_DS: | |
5267 | case R_PPC64_ADDR24: | |
65f38f15 | 5268 | case R_PPC64_ADDR32: |
65f38f15 AM |
5269 | case R_PPC64_UADDR16: |
5270 | case R_PPC64_UADDR32: | |
5271 | case R_PPC64_UADDR64: | |
5bd4f169 | 5272 | case R_PPC64_TOC: |
81848ca0 AM |
5273 | if (h != NULL && !info->shared) |
5274 | /* We may need a copy reloc. */ | |
f5385ebf | 5275 | h->non_got_ref = 1; |
81848ca0 | 5276 | |
41bd81ab | 5277 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5278 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5279 | break; |
e86ce104 | 5280 | |
65f38f15 AM |
5281 | /* If we are creating a shared library, and this is a reloc |
5282 | against a global symbol, or a non PC relative reloc | |
5283 | against a local symbol, then we need to copy the reloc | |
5284 | into the shared library. However, if we are linking with | |
5285 | -Bsymbolic, we do not need to copy a reloc against a | |
5286 | global symbol which is defined in an object we are | |
5287 | including in the link (i.e., DEF_REGULAR is set). At | |
5288 | this point we have not seen all the input files, so it is | |
5289 | possible that DEF_REGULAR is not set now but will be set | |
5290 | later (it is never cleared). In case of a weak definition, | |
5291 | DEF_REGULAR may be cleared later by a strong definition in | |
5292 | a shared library. We account for that possibility below by | |
f4656909 | 5293 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5294 | table entry. A similar situation occurs when creating |
5295 | shared libraries and symbol visibility changes render the | |
5296 | symbol local. | |
5297 | ||
5298 | If on the other hand, we are creating an executable, we | |
5299 | may need to keep relocations for symbols satisfied by a | |
5300 | dynamic library if we manage to avoid copy relocs for the | |
5301 | symbol. */ | |
411e1bfb | 5302 | dodyn: |
65f38f15 | 5303 | if ((info->shared |
1d483afe | 5304 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5305 | || (h != NULL |
5306 | && (! info->symbolic | |
5307 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5308 | || !h->def_regular)))) |
f4656909 AM |
5309 | || (ELIMINATE_COPY_RELOCS |
5310 | && !info->shared | |
65f38f15 AM |
5311 | && h != NULL |
5312 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5313 | || !h->def_regular)) |
5314 | || (!info->shared | |
5315 | && ifunc != NULL)) | |
5bd4f169 | 5316 | { |
ec338859 AM |
5317 | struct ppc_dyn_relocs *p; |
5318 | struct ppc_dyn_relocs **head; | |
5319 | ||
65f38f15 AM |
5320 | /* We must copy these reloc types into the output file. |
5321 | Create a reloc section in dynobj and make room for | |
5322 | this reloc. */ | |
5bd4f169 AM |
5323 | if (sreloc == NULL) |
5324 | { | |
83bac4b0 NC |
5325 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5326 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5327 | |
5bd4f169 | 5328 | if (sreloc == NULL) |
83bac4b0 | 5329 | return FALSE; |
5bd4f169 AM |
5330 | } |
5331 | ||
65f38f15 AM |
5332 | /* If this is a global symbol, we count the number of |
5333 | relocations we need for this symbol. */ | |
5334 | if (h != NULL) | |
5335 | { | |
ec338859 | 5336 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5337 | } |
5338 | else | |
5339 | { | |
ec338859 AM |
5340 | /* Track dynamic relocs needed for local syms too. |
5341 | We really need local syms available to do this | |
5342 | easily. Oh well. */ | |
ec338859 | 5343 | asection *s; |
6edfbbad | 5344 | void *vpp; |
87d72d41 | 5345 | Elf_Internal_Sym *isym; |
6edfbbad | 5346 | |
87d72d41 AM |
5347 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5348 | abfd, r_symndx); | |
5349 | if (isym == NULL) | |
b34976b6 | 5350 | return FALSE; |
ec338859 | 5351 | |
87d72d41 AM |
5352 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5353 | if (s == NULL) | |
5354 | s = sec; | |
5355 | ||
6edfbbad DJ |
5356 | vpp = &elf_section_data (s)->local_dynrel; |
5357 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5358 | } |
ec338859 AM |
5359 | |
5360 | p = *head; | |
5361 | if (p == NULL || p->sec != sec) | |
5362 | { | |
4ce794b7 | 5363 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5364 | if (p == NULL) |
b34976b6 | 5365 | return FALSE; |
ec338859 AM |
5366 | p->next = *head; |
5367 | *head = p; | |
5368 | p->sec = sec; | |
5369 | p->count = 0; | |
5370 | p->pc_count = 0; | |
5371 | } | |
5372 | ||
5373 | p->count += 1; | |
1d483afe | 5374 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5375 | p->pc_count += 1; |
65f38f15 | 5376 | } |
5bd4f169 | 5377 | break; |
65f38f15 AM |
5378 | |
5379 | default: | |
96e0dda4 | 5380 | break; |
5bd4f169 AM |
5381 | } |
5382 | } | |
5383 | ||
b34976b6 | 5384 | return TRUE; |
5bd4f169 AM |
5385 | } |
5386 | ||
8387904d AM |
5387 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5388 | of the code entry point, and its section. */ | |
5389 | ||
5390 | static bfd_vma | |
5391 | opd_entry_value (asection *opd_sec, | |
5392 | bfd_vma offset, | |
5393 | asection **code_sec, | |
5394 | bfd_vma *code_off) | |
5395 | { | |
5396 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5397 | Elf_Internal_Rela *relocs; |
8387904d | 5398 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5399 | bfd_vma val; |
8387904d | 5400 | |
4b85d634 AM |
5401 | /* No relocs implies we are linking a --just-symbols object. */ |
5402 | if (opd_sec->reloc_count == 0) | |
5403 | { | |
4b85d634 AM |
5404 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) |
5405 | return (bfd_vma) -1; | |
3b36f7e6 | 5406 | |
4b85d634 AM |
5407 | if (code_sec != NULL) |
5408 | { | |
5409 | asection *sec, *likely = NULL; | |
5410 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5411 | if (sec->vma <= val | |
5412 | && (sec->flags & SEC_LOAD) != 0 | |
5413 | && (sec->flags & SEC_ALLOC) != 0) | |
5414 | likely = sec; | |
5415 | if (likely != NULL) | |
5416 | { | |
5417 | *code_sec = likely; | |
5418 | if (code_off != NULL) | |
5419 | *code_off = val - likely->vma; | |
5420 | } | |
5421 | } | |
5422 | return val; | |
5423 | } | |
5424 | ||
0c8d6e5c | 5425 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5426 | |
8860955f AM |
5427 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5428 | if (relocs == NULL) | |
5429 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5430 | |
8387904d | 5431 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5432 | lo = relocs; |
8387904d AM |
5433 | BFD_ASSERT (lo != NULL); |
5434 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5435 | val = (bfd_vma) -1; |
8387904d AM |
5436 | while (lo < hi) |
5437 | { | |
5438 | look = lo + (hi - lo) / 2; | |
5439 | if (look->r_offset < offset) | |
5440 | lo = look + 1; | |
5441 | else if (look->r_offset > offset) | |
5442 | hi = look; | |
5443 | else | |
5444 | { | |
0ffa91dd NC |
5445 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5446 | ||
8387904d AM |
5447 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5448 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5449 | { | |
5450 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5451 | asection *sec; |
5452 | ||
5453 | if (symndx < symtab_hdr->sh_info) | |
5454 | { | |
5455 | Elf_Internal_Sym *sym; | |
5456 | ||
5457 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5458 | if (sym == NULL) | |
5459 | { | |
5460 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5461 | symtab_hdr->sh_info, | |
5462 | 0, NULL, NULL, NULL); | |
5463 | if (sym == NULL) | |
645ea6a9 | 5464 | break; |
8387904d AM |
5465 | symtab_hdr->contents = (bfd_byte *) sym; |
5466 | } | |
5467 | ||
5468 | sym += symndx; | |
5469 | val = sym->st_value; | |
cb33740c | 5470 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5471 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5472 | } | |
5473 | else | |
5474 | { | |
5475 | struct elf_link_hash_entry **sym_hashes; | |
5476 | struct elf_link_hash_entry *rh; | |
5477 | ||
5478 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5479 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5480 | rh = elf_follow_link (rh); |
8387904d AM |
5481 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined |
5482 | || rh->root.type == bfd_link_hash_defweak); | |
5483 | val = rh->root.u.def.value; | |
5484 | sec = rh->root.u.def.section; | |
5485 | } | |
5486 | val += look->r_addend; | |
5487 | if (code_off != NULL) | |
5488 | *code_off = val; | |
5489 | if (code_sec != NULL) | |
5490 | *code_sec = sec; | |
5491 | if (sec != NULL && sec->output_section != NULL) | |
5492 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5493 | } |
5494 | break; | |
5495 | } | |
5496 | } | |
645ea6a9 | 5497 | |
645ea6a9 | 5498 | return val; |
8387904d AM |
5499 | } |
5500 | ||
b31867b6 AM |
5501 | /* If FDH is a function descriptor symbol, return the associated code |
5502 | entry symbol if it is defined. Return NULL otherwise. */ | |
5503 | ||
5504 | static struct ppc_link_hash_entry * | |
5505 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5506 | { | |
5507 | if (fdh->is_func_descriptor) | |
5508 | { | |
5509 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5510 | if (fh->elf.root.type == bfd_link_hash_defined | |
5511 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5512 | return fh; | |
5513 | } | |
5514 | return NULL; | |
5515 | } | |
5516 | ||
5517 | /* If FH is a function code entry symbol, return the associated | |
5518 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5519 | ||
5520 | static struct ppc_link_hash_entry * | |
5521 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5522 | { | |
5523 | if (fh->oh != NULL | |
5524 | && fh->oh->is_func_descriptor) | |
5525 | { | |
5526 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5527 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5528 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5529 | return fdh; | |
5530 | } | |
5531 | return NULL; | |
5532 | } | |
5533 | ||
74f0fb50 AM |
5534 | /* Mark all our entry sym sections, both opd and code section. */ |
5535 | ||
5536 | static void | |
5537 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5538 | { | |
5539 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5540 | struct bfd_sym_chain *sym; | |
5541 | ||
5542 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
5543 | { | |
b31867b6 | 5544 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5545 | asection *sec; |
5546 | ||
5547 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5548 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5549 | if (eh == NULL) |
5550 | continue; | |
5551 | if (eh->elf.root.type != bfd_link_hash_defined | |
5552 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5553 | continue; | |
5554 | ||
b31867b6 AM |
5555 | fh = defined_code_entry (eh); |
5556 | if (fh != NULL) | |
74f0fb50 | 5557 | { |
b31867b6 | 5558 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5559 | sec->flags |= SEC_KEEP; |
5560 | } | |
5561 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5562 | && opd_entry_value (eh->elf.root.u.def.section, | |
5563 | eh->elf.root.u.def.value, | |
5564 | &sec, NULL) != (bfd_vma) -1) | |
5565 | sec->flags |= SEC_KEEP; | |
5566 | ||
5567 | sec = eh->elf.root.u.def.section; | |
5568 | sec->flags |= SEC_KEEP; | |
5569 | } | |
5570 | } | |
5571 | ||
64d03ab5 AM |
5572 | /* Mark sections containing dynamically referenced symbols. When |
5573 | building shared libraries, we must assume that any visible symbol is | |
5574 | referenced. */ | |
5575 | ||
5576 | static bfd_boolean | |
5577 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5578 | { | |
5579 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5580 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5581 | struct ppc_link_hash_entry *fdh; |
64d03ab5 AM |
5582 | |
5583 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5584 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5585 | ||
5586 | /* Dynamic linking info is on the func descriptor sym. */ | |
b31867b6 AM |
5587 | fdh = defined_func_desc (eh); |
5588 | if (fdh != NULL) | |
5589 | eh = fdh; | |
64d03ab5 AM |
5590 | |
5591 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5592 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5593 | && (eh->elf.ref_dynamic | |
5594 | || (!info->executable | |
5595 | && eh->elf.def_regular | |
5596 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5597 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5598 | { | |
5599 | asection *code_sec; | |
b31867b6 | 5600 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5601 | |
5602 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5603 | ||
5604 | /* Function descriptor syms cause the associated | |
5605 | function code sym section to be marked. */ | |
b31867b6 AM |
5606 | fh = defined_code_entry (eh); |
5607 | if (fh != NULL) | |
5608 | { | |
5609 | code_sec = fh->elf.root.u.def.section; | |
5610 | code_sec->flags |= SEC_KEEP; | |
5611 | } | |
64d03ab5 AM |
5612 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5613 | && opd_entry_value (eh->elf.root.u.def.section, | |
5614 | eh->elf.root.u.def.value, | |
5615 | &code_sec, NULL) != (bfd_vma) -1) | |
5616 | code_sec->flags |= SEC_KEEP; | |
5617 | } | |
5618 | ||
5619 | return TRUE; | |
5620 | } | |
5621 | ||
5bd4f169 AM |
5622 | /* Return the section that should be marked against GC for a given |
5623 | relocation. */ | |
5624 | ||
5625 | static asection * | |
4ce794b7 | 5626 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5627 | struct bfd_link_info *info, |
4ce794b7 AM |
5628 | Elf_Internal_Rela *rel, |
5629 | struct elf_link_hash_entry *h, | |
5630 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5631 | { |
ccfa59ea AM |
5632 | asection *rsec; |
5633 | ||
ccfa59ea AM |
5634 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5635 | function sections, as all functions are referenced in .opd. */ | |
5636 | rsec = NULL; | |
5637 | if (get_opd_info (sec) != NULL) | |
5638 | return rsec; | |
1e2f5b6e | 5639 | |
5bd4f169 AM |
5640 | if (h != NULL) |
5641 | { | |
04c9666a | 5642 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5643 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5644 | |
4ce794b7 | 5645 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5646 | switch (r_type) |
5bd4f169 AM |
5647 | { |
5648 | case R_PPC64_GNU_VTINHERIT: | |
5649 | case R_PPC64_GNU_VTENTRY: | |
5650 | break; | |
5651 | ||
5652 | default: | |
5653 | switch (h->root.type) | |
5654 | { | |
5655 | case bfd_link_hash_defined: | |
5656 | case bfd_link_hash_defweak: | |
ccfa59ea | 5657 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5658 | fdh = defined_func_desc (eh); |
5659 | if (fdh != NULL) | |
5660 | eh = fdh; | |
1e2f5b6e AM |
5661 | |
5662 | /* Function descriptor syms cause the associated | |
5663 | function code sym section to be marked. */ | |
b31867b6 AM |
5664 | fh = defined_code_entry (eh); |
5665 | if (fh != NULL) | |
ccfa59ea AM |
5666 | { |
5667 | /* They also mark their opd section. */ | |
74f0fb50 | 5668 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5669 | |
b31867b6 | 5670 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5671 | } |
8387904d AM |
5672 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5673 | && opd_entry_value (eh->elf.root.u.def.section, | |
5674 | eh->elf.root.u.def.value, | |
5675 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5676 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5677 | else |
1e2f5b6e AM |
5678 | rsec = h->root.u.def.section; |
5679 | break; | |
5bd4f169 AM |
5680 | |
5681 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5682 | rsec = h->root.u.c.p->section; |
5683 | break; | |
5bd4f169 AM |
5684 | |
5685 | default: | |
fb34365b | 5686 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5687 | } |
5688 | } | |
5689 | } | |
5690 | else | |
5691 | { | |
74f0fb50 | 5692 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5693 | |
5694 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5695 | opd = get_opd_info (rsec); |
5696 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5697 | { |
74f0fb50 | 5698 | rsec->gc_mark = 1; |
ccfa59ea | 5699 | |
74f0fb50 | 5700 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5701 | } |
5bd4f169 AM |
5702 | } |
5703 | ||
1e2f5b6e | 5704 | return rsec; |
5bd4f169 AM |
5705 | } |
5706 | ||
65f38f15 AM |
5707 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5708 | section being removed. */ | |
5bd4f169 | 5709 | |
b34976b6 | 5710 | static bfd_boolean |
4ce794b7 AM |
5711 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5712 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5713 | { |
411e1bfb | 5714 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5715 | Elf_Internal_Shdr *symtab_hdr; |
5716 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5717 | struct got_entry **local_got_ents; |
5bd4f169 | 5718 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5719 | |
7dda2462 TG |
5720 | if (info->relocatable) |
5721 | return TRUE; | |
5722 | ||
680a3378 AM |
5723 | if ((sec->flags & SEC_ALLOC) == 0) |
5724 | return TRUE; | |
5725 | ||
ec338859 AM |
5726 | elf_section_data (sec)->local_dynrel = NULL; |
5727 | ||
411e1bfb | 5728 | htab = ppc_hash_table (info); |
0ffa91dd | 5729 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5730 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5731 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5732 | |
5733 | relend = relocs + sec->reloc_count; | |
5734 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5735 | { |
5736 | unsigned long r_symndx; | |
04c9666a | 5737 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5738 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5739 | char tls_type = 0; |
5bd4f169 | 5740 | |
a33d1f77 | 5741 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5742 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5743 | if (r_symndx >= symtab_hdr->sh_info) |
5744 | { | |
5745 | struct ppc_link_hash_entry *eh; | |
5746 | struct ppc_dyn_relocs **pp; | |
5747 | struct ppc_dyn_relocs *p; | |
5748 | ||
5749 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5750 | h = elf_follow_link (h); |
58ac9f71 AM |
5751 | eh = (struct ppc_link_hash_entry *) h; |
5752 | ||
5753 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5754 | if (p->sec == sec) | |
5755 | { | |
5756 | /* Everything must go for SEC. */ | |
5757 | *pp = p->next; | |
5758 | break; | |
5759 | } | |
5760 | } | |
5761 | ||
e054468f AM |
5762 | if (is_branch_reloc (r_type)) |
5763 | { | |
5764 | struct plt_entry **ifunc = NULL; | |
5765 | if (h != NULL) | |
5766 | { | |
5767 | if (h->type == STT_GNU_IFUNC) | |
5768 | ifunc = &h->plt.plist; | |
5769 | } | |
5770 | else if (local_got_ents != NULL) | |
5771 | { | |
5772 | struct plt_entry **local_plt = (struct plt_entry **) | |
5773 | (local_got_ents + symtab_hdr->sh_info); | |
5774 | char *local_got_tls_masks = (char *) | |
5775 | (local_plt + symtab_hdr->sh_info); | |
5776 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
5777 | ifunc = local_plt + r_symndx; | |
5778 | } | |
5779 | if (ifunc != NULL) | |
5780 | { | |
5781 | struct plt_entry *ent; | |
5782 | ||
5783 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
5784 | if (ent->addend == rel->r_addend) | |
5785 | break; | |
5786 | if (ent == NULL) | |
5787 | abort (); | |
5788 | if (ent->plt.refcount > 0) | |
5789 | ent->plt.refcount -= 1; | |
5790 | continue; | |
5791 | } | |
5792 | } | |
5793 | ||
a33d1f77 AM |
5794 | switch (r_type) |
5795 | { | |
411e1bfb AM |
5796 | case R_PPC64_GOT_TLSLD16: |
5797 | case R_PPC64_GOT_TLSLD16_LO: | |
5798 | case R_PPC64_GOT_TLSLD16_HI: | |
5799 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5800 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5801 | goto dogot; |
5802 | ||
5803 | case R_PPC64_GOT_TLSGD16: | |
5804 | case R_PPC64_GOT_TLSGD16_LO: | |
5805 | case R_PPC64_GOT_TLSGD16_HI: | |
5806 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5807 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5808 | goto dogot; |
5809 | ||
5810 | case R_PPC64_GOT_TPREL16_DS: | |
5811 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5812 | case R_PPC64_GOT_TPREL16_HI: | |
5813 | case R_PPC64_GOT_TPREL16_HA: | |
5814 | tls_type = TLS_TLS | TLS_TPREL; | |
5815 | goto dogot; | |
5816 | ||
5817 | case R_PPC64_GOT_DTPREL16_DS: | |
5818 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5819 | case R_PPC64_GOT_DTPREL16_HI: | |
5820 | case R_PPC64_GOT_DTPREL16_HA: | |
5821 | tls_type = TLS_TLS | TLS_DTPREL; | |
5822 | goto dogot; | |
5823 | ||
a33d1f77 AM |
5824 | case R_PPC64_GOT16: |
5825 | case R_PPC64_GOT16_DS: | |
5826 | case R_PPC64_GOT16_HA: | |
5827 | case R_PPC64_GOT16_HI: | |
5828 | case R_PPC64_GOT16_LO: | |
5829 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5830 | dogot: |
5831 | { | |
5832 | struct got_entry *ent; | |
5833 | ||
58ac9f71 AM |
5834 | if (h != NULL) |
5835 | ent = h->got.glist; | |
411e1bfb AM |
5836 | else |
5837 | ent = local_got_ents[r_symndx]; | |
5838 | ||
5839 | for (; ent != NULL; ent = ent->next) | |
5840 | if (ent->addend == rel->r_addend | |
e717da7e | 5841 | && ent->owner == abfd |
411e1bfb AM |
5842 | && ent->tls_type == tls_type) |
5843 | break; | |
5844 | if (ent == NULL) | |
5845 | abort (); | |
5846 | if (ent->got.refcount > 0) | |
5847 | ent->got.refcount -= 1; | |
5848 | } | |
a33d1f77 | 5849 | break; |
65f38f15 | 5850 | |
a33d1f77 AM |
5851 | case R_PPC64_PLT16_HA: |
5852 | case R_PPC64_PLT16_HI: | |
5853 | case R_PPC64_PLT16_LO: | |
5854 | case R_PPC64_PLT32: | |
5855 | case R_PPC64_PLT64: | |
721956f4 AM |
5856 | case R_PPC64_REL14: |
5857 | case R_PPC64_REL14_BRNTAKEN: | |
5858 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5859 | case R_PPC64_REL24: |
58ac9f71 | 5860 | if (h != NULL) |
5d1634d7 | 5861 | { |
411e1bfb AM |
5862 | struct plt_entry *ent; |
5863 | ||
411e1bfb AM |
5864 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5865 | if (ent->addend == rel->r_addend) | |
5866 | break; | |
7c6c1722 | 5867 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 5868 | ent->plt.refcount -= 1; |
5d1634d7 | 5869 | } |
e86ce104 | 5870 | break; |
5d1634d7 | 5871 | |
a33d1f77 AM |
5872 | default: |
5873 | break; | |
5874 | } | |
5875 | } | |
b34976b6 | 5876 | return TRUE; |
5bd4f169 AM |
5877 | } |
5878 | ||
deb0e272 AM |
5879 | /* The maximum size of .sfpr. */ |
5880 | #define SFPR_MAX (218*4) | |
5881 | ||
5882 | struct sfpr_def_parms | |
5883 | { | |
699733f6 AM |
5884 | const char name[12]; |
5885 | unsigned char lo, hi; | |
deb0e272 AM |
5886 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5887 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5888 | }; | |
5889 | ||
5890 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5891 | ||
5892 | static unsigned int | |
5893 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5894 | { | |
5895 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5896 | unsigned int i; | |
5897 | size_t len = strlen (parm->name); | |
5898 | bfd_boolean writing = FALSE; | |
699733f6 | 5899 | char sym[16]; |
deb0e272 AM |
5900 | |
5901 | memcpy (sym, parm->name, len); | |
5902 | sym[len + 2] = 0; | |
5903 | ||
5904 | for (i = parm->lo; i <= parm->hi; i++) | |
5905 | { | |
5906 | struct elf_link_hash_entry *h; | |
5907 | ||
5908 | sym[len + 0] = i / 10 + '0'; | |
5909 | sym[len + 1] = i % 10 + '0'; | |
5910 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5911 | if (h != NULL | |
f5385ebf | 5912 | && !h->def_regular) |
deb0e272 AM |
5913 | { |
5914 | h->root.type = bfd_link_hash_defined; | |
5915 | h->root.u.def.section = htab->sfpr; | |
5916 | h->root.u.def.value = htab->sfpr->size; | |
5917 | h->type = STT_FUNC; | |
f5385ebf | 5918 | h->def_regular = 1; |
deb0e272 AM |
5919 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5920 | writing = TRUE; | |
5921 | if (htab->sfpr->contents == NULL) | |
5922 | { | |
5923 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5924 | if (htab->sfpr->contents == NULL) | |
5925 | return FALSE; | |
5926 | } | |
5927 | } | |
5928 | if (writing) | |
5929 | { | |
5930 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5931 | if (i != parm->hi) | |
5932 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5933 | else | |
5934 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5935 | htab->sfpr->size = p - htab->sfpr->contents; | |
5936 | } | |
5937 | } | |
5938 | ||
5939 | return TRUE; | |
5940 | } | |
5941 | ||
5942 | static bfd_byte * | |
5943 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5944 | { | |
5945 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5946 | return p + 4; | |
5947 | } | |
5948 | ||
5949 | static bfd_byte * | |
5950 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5951 | { | |
5952 | p = savegpr0 (abfd, p, r); | |
5953 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5954 | p = p + 4; | |
5955 | bfd_put_32 (abfd, BLR, p); | |
5956 | return p + 4; | |
5957 | } | |
5958 | ||
5959 | static bfd_byte * | |
5960 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5961 | { | |
5962 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5963 | return p + 4; | |
5964 | } | |
5965 | ||
5966 | static bfd_byte * | |
5967 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5968 | { | |
5969 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5970 | p = p + 4; | |
5971 | p = restgpr0 (abfd, p, r); | |
5972 | bfd_put_32 (abfd, MTLR_R0, p); | |
5973 | p = p + 4; | |
5974 | if (r == 29) | |
5975 | { | |
5976 | p = restgpr0 (abfd, p, 30); | |
5977 | p = restgpr0 (abfd, p, 31); | |
5978 | } | |
5979 | bfd_put_32 (abfd, BLR, p); | |
5980 | return p + 4; | |
5981 | } | |
5982 | ||
5983 | static bfd_byte * | |
5984 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5985 | { | |
5986 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5987 | return p + 4; | |
5988 | } | |
5989 | ||
5990 | static bfd_byte * | |
5991 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5992 | { | |
5993 | p = savegpr1 (abfd, p, r); | |
5994 | bfd_put_32 (abfd, BLR, p); | |
5995 | return p + 4; | |
5996 | } | |
5997 | ||
5998 | static bfd_byte * | |
5999 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6000 | { | |
6001 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6002 | return p + 4; | |
6003 | } | |
6004 | ||
6005 | static bfd_byte * | |
6006 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6007 | { | |
6008 | p = restgpr1 (abfd, p, r); | |
6009 | bfd_put_32 (abfd, BLR, p); | |
6010 | return p + 4; | |
6011 | } | |
6012 | ||
6013 | static bfd_byte * | |
6014 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6015 | { | |
6016 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6017 | return p + 4; | |
6018 | } | |
6019 | ||
6020 | static bfd_byte * | |
6021 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6022 | { | |
6023 | p = savefpr (abfd, p, r); | |
6024 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6025 | p = p + 4; | |
6026 | bfd_put_32 (abfd, BLR, p); | |
6027 | return p + 4; | |
6028 | } | |
6029 | ||
6030 | static bfd_byte * | |
6031 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6032 | { | |
6033 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6034 | return p + 4; | |
6035 | } | |
6036 | ||
6037 | static bfd_byte * | |
6038 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6039 | { | |
6040 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6041 | p = p + 4; | |
6042 | p = restfpr (abfd, p, r); | |
6043 | bfd_put_32 (abfd, MTLR_R0, p); | |
6044 | p = p + 4; | |
6045 | if (r == 29) | |
6046 | { | |
6047 | p = restfpr (abfd, p, 30); | |
6048 | p = restfpr (abfd, p, 31); | |
6049 | } | |
6050 | bfd_put_32 (abfd, BLR, p); | |
6051 | return p + 4; | |
6052 | } | |
6053 | ||
6054 | static bfd_byte * | |
6055 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6056 | { | |
6057 | p = savefpr (abfd, p, r); | |
6058 | bfd_put_32 (abfd, BLR, p); | |
6059 | return p + 4; | |
6060 | } | |
6061 | ||
6062 | static bfd_byte * | |
6063 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6064 | { | |
6065 | p = restfpr (abfd, p, r); | |
6066 | bfd_put_32 (abfd, BLR, p); | |
6067 | return p + 4; | |
6068 | } | |
6069 | ||
6070 | static bfd_byte * | |
6071 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6072 | { | |
6073 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6074 | p = p + 4; | |
6075 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6076 | return p + 4; | |
6077 | } | |
6078 | ||
6079 | static bfd_byte * | |
6080 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6081 | { | |
6082 | p = savevr (abfd, p, r); | |
6083 | bfd_put_32 (abfd, BLR, p); | |
6084 | return p + 4; | |
6085 | } | |
6086 | ||
6087 | static bfd_byte * | |
6088 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6089 | { | |
6090 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6091 | p = p + 4; | |
6092 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6093 | return p + 4; | |
6094 | } | |
6095 | ||
6096 | static bfd_byte * | |
6097 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6098 | { | |
6099 | p = restvr (abfd, p, r); | |
6100 | bfd_put_32 (abfd, BLR, p); | |
6101 | return p + 4; | |
6102 | } | |
6103 | ||
e86ce104 AM |
6104 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6105 | information on function code symbol entries to their corresponding | |
6106 | function descriptor symbol entries. */ | |
deb0e272 | 6107 | |
b34976b6 | 6108 | static bfd_boolean |
4ce794b7 | 6109 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6110 | { |
e86ce104 | 6111 | struct bfd_link_info *info; |
65f38f15 | 6112 | struct ppc_link_hash_table *htab; |
411e1bfb | 6113 | struct plt_entry *ent; |
50bc7936 AM |
6114 | struct ppc_link_hash_entry *fh; |
6115 | struct ppc_link_hash_entry *fdh; | |
6116 | bfd_boolean force_local; | |
5bd4f169 | 6117 | |
50bc7936 AM |
6118 | fh = (struct ppc_link_hash_entry *) h; |
6119 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6120 | return TRUE; |
e86ce104 | 6121 | |
50bc7936 AM |
6122 | if (fh->elf.root.type == bfd_link_hash_warning) |
6123 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 6124 | |
4ce794b7 | 6125 | info = inf; |
65f38f15 | 6126 | htab = ppc_hash_table (info); |
5bd4f169 | 6127 | |
c09bdfe5 AM |
6128 | /* Resolve undefined references to dot-symbols as the value |
6129 | in the function descriptor, if we have one in a regular object. | |
6130 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6131 | in dynamic objects are handled elsewhere. */ | |
6132 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6133 | && fh->was_undefined | |
b31867b6 AM |
6134 | && (fdh = defined_func_desc (fh)) != NULL |
6135 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6136 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6137 | fdh->elf.root.u.def.value, | |
c09bdfe5 AM |
6138 | &fh->elf.root.u.def.section, |
6139 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
6140 | { | |
b31867b6 | 6141 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6142 | fh->elf.forced_local = 1; |
b31867b6 AM |
6143 | fh->elf.def_regular = fdh->elf.def_regular; |
6144 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6145 | } |
6146 | ||
e86ce104 AM |
6147 | /* If this is a function code symbol, transfer dynamic linking |
6148 | information to the function descriptor symbol. */ | |
50bc7936 | 6149 | if (!fh->is_func) |
b34976b6 | 6150 | return TRUE; |
e86ce104 | 6151 | |
50bc7936 | 6152 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6153 | if (ent->plt.refcount > 0) |
6154 | break; | |
50bc7936 AM |
6155 | if (ent == NULL |
6156 | || fh->elf.root.root.string[0] != '.' | |
6157 | || fh->elf.root.root.string[1] == '\0') | |
6158 | return TRUE; | |
5bd4f169 | 6159 | |
50bc7936 AM |
6160 | /* Find the corresponding function descriptor symbol. Create it |
6161 | as undefined if necessary. */ | |
5bd4f169 | 6162 | |
b31867b6 | 6163 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6164 | if (fdh == NULL |
df131623 | 6165 | && !info->executable |
50bc7936 AM |
6166 | && (fh->elf.root.type == bfd_link_hash_undefined |
6167 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6168 | { | |
908b32fc | 6169 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6170 | if (fdh == NULL) |
6171 | return FALSE; | |
50bc7936 | 6172 | } |
648cca2c | 6173 | |
908b32fc | 6174 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6175 | code symbol is strong undefined, make the fake sym the same. |
6176 | If the function code symbol is defined, then force the fake | |
6177 | descriptor local; We can't support overriding of symbols in a | |
6178 | shared library on a fake descriptor. */ | |
908b32fc AM |
6179 | |
6180 | if (fdh != NULL | |
6181 | && fdh->fake | |
433817dd | 6182 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6183 | { |
433817dd AM |
6184 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6185 | { | |
6186 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6187 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6188 | } | |
6189 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6190 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6191 | { | |
6192 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6193 | } | |
908b32fc AM |
6194 | } |
6195 | ||
50bc7936 | 6196 | if (fdh != NULL |
f5385ebf | 6197 | && !fdh->elf.forced_local |
df131623 | 6198 | && (!info->executable |
f5385ebf AM |
6199 | || fdh->elf.def_dynamic |
6200 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6201 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6202 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6203 | { | |
6204 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6205 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6206 | return FALSE; |
f5385ebf AM |
6207 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6208 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6209 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6210 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6211 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6212 | { |
40d16e0b | 6213 | move_plt_plist (fh, fdh); |
f5385ebf | 6214 | fdh->elf.needs_plt = 1; |
e86ce104 | 6215 | } |
50bc7936 | 6216 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6217 | fdh->oh = fh; |
6218 | fh->oh = fdh; | |
e86ce104 AM |
6219 | } |
6220 | ||
50bc7936 AM |
6221 | /* Now that the info is on the function descriptor, clear the |
6222 | function code sym info. Any function code syms for which we | |
6223 | don't have a definition in a regular file, we force local. | |
6224 | This prevents a shared library from exporting syms that have | |
6225 | been imported from another library. Function code syms that | |
6226 | are really in the library we must leave global to prevent the | |
6227 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6228 | force_local = (!fh->elf.def_regular |
6229 | || fdh == NULL | |
6230 | || !fdh->elf.def_regular | |
6231 | || fdh->elf.forced_local); | |
50bc7936 AM |
6232 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6233 | ||
b34976b6 | 6234 | return TRUE; |
e86ce104 | 6235 | } |
40b8271b | 6236 | |
e86ce104 | 6237 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6238 | this hook to a) provide some gcc support functions, and b) transfer |
6239 | dynamic linking information gathered so far on function code symbol | |
6240 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6241 | |
b34976b6 | 6242 | static bfd_boolean |
4ce794b7 AM |
6243 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6244 | struct bfd_link_info *info) | |
e86ce104 AM |
6245 | { |
6246 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6247 | unsigned int i; |
deb0e272 AM |
6248 | const struct sfpr_def_parms funcs[] = |
6249 | { | |
6250 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6251 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6252 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6253 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6254 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6255 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6256 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6257 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6258 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6259 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6260 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6261 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6262 | }; | |
e86ce104 AM |
6263 | |
6264 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
6265 | if (htab->sfpr == NULL) |
6266 | /* We don't have any relocs. */ | |
b34976b6 | 6267 | return TRUE; |
82bd7b59 | 6268 | |
deb0e272 AM |
6269 | /* Provide any missing _save* and _rest* functions. */ |
6270 | htab->sfpr->size = 0; | |
6271 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6272 | if (!sfpr_define (info, &funcs[i])) | |
6273 | return FALSE; | |
82bd7b59 | 6274 | |
4ce794b7 | 6275 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6276 | |
eea6121a | 6277 | if (htab->sfpr->size == 0) |
8423293d | 6278 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6279 | |
b34976b6 | 6280 | return TRUE; |
e86ce104 AM |
6281 | } |
6282 | ||
6283 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6284 | regular object. The current definition is in some section of the | |
6285 | dynamic object, but we're not including those sections. We have to | |
6286 | change the definition to something the rest of the link can | |
6287 | understand. */ | |
6288 | ||
b34976b6 | 6289 | static bfd_boolean |
4ce794b7 AM |
6290 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6291 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6292 | { |
6293 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6294 | asection *s; |
e86ce104 AM |
6295 | |
6296 | htab = ppc_hash_table (info); | |
6297 | ||
6298 | /* Deal with function syms. */ | |
6299 | if (h->type == STT_FUNC | |
e054468f | 6300 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6301 | || h->needs_plt) |
e86ce104 AM |
6302 | { |
6303 | /* Clear procedure linkage table information for any symbol that | |
6304 | won't need a .plt entry. */ | |
411e1bfb AM |
6305 | struct plt_entry *ent; |
6306 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6307 | if (ent->plt.refcount > 0) | |
6308 | break; | |
8387904d | 6309 | if (ent == NULL |
e054468f AM |
6310 | || (h->type != STT_GNU_IFUNC |
6311 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6312 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6313 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6314 | { |
411e1bfb | 6315 | h->plt.plist = NULL; |
f5385ebf | 6316 | h->needs_plt = 0; |
40b8271b | 6317 | } |
5bd4f169 | 6318 | } |
bbd7ec4a | 6319 | else |
411e1bfb | 6320 | h->plt.plist = NULL; |
5bd4f169 AM |
6321 | |
6322 | /* If this is a weak symbol, and there is a real definition, the | |
6323 | processor independent code will have arranged for us to see the | |
6324 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6325 | if (h->u.weakdef != NULL) |
5bd4f169 | 6326 | { |
f6e332e6 AM |
6327 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6328 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6329 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6330 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6331 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6332 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6333 | return TRUE; |
5bd4f169 AM |
6334 | } |
6335 | ||
5bd4f169 AM |
6336 | /* If we are creating a shared library, we must presume that the |
6337 | only references to the symbol are via the global offset table. | |
6338 | For such cases we need not do anything here; the relocations will | |
6339 | be handled correctly by relocate_section. */ | |
6340 | if (info->shared) | |
b34976b6 | 6341 | return TRUE; |
5bd4f169 | 6342 | |
65f38f15 AM |
6343 | /* If there are no references to this symbol that do not use the |
6344 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6345 | if (!h->non_got_ref) |
b34976b6 | 6346 | return TRUE; |
65f38f15 | 6347 | |
b186458a JJ |
6348 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6349 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6350 | return TRUE; | |
6351 | ||
f4656909 | 6352 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6353 | { |
f4656909 AM |
6354 | struct ppc_link_hash_entry * eh; |
6355 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6356 | |
f4656909 AM |
6357 | eh = (struct ppc_link_hash_entry *) h; |
6358 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6359 | { | |
6360 | s = p->sec->output_section; | |
6361 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6362 | break; | |
6363 | } | |
6364 | ||
6365 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6366 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6367 | if (p == NULL) | |
6368 | { | |
f5385ebf | 6369 | h->non_got_ref = 0; |
f4656909 AM |
6370 | return TRUE; |
6371 | } | |
65f38f15 AM |
6372 | } |
6373 | ||
5d35169e | 6374 | if (h->plt.plist != NULL) |
97b639ba AM |
6375 | { |
6376 | /* We should never get here, but unfortunately there are versions | |
6377 | of gcc out there that improperly (for this ABI) put initialized | |
6378 | function pointers, vtable refs and suchlike in read-only | |
6379 | sections. Allow them to proceed, but warn that this might | |
6380 | break at runtime. */ | |
6381 | (*_bfd_error_handler) | |
6382 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6383 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6384 | h->root.root.string); | |
6385 | } | |
5d35169e AM |
6386 | |
6387 | /* This is a reference to a symbol defined by a dynamic object which | |
6388 | is not a function. */ | |
6389 | ||
909272ee AM |
6390 | if (h->size == 0) |
6391 | { | |
6392 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6393 | h->root.root.string); | |
6394 | return TRUE; | |
6395 | } | |
6396 | ||
5bd4f169 AM |
6397 | /* We must allocate the symbol in our .dynbss section, which will |
6398 | become part of the .bss section of the executable. There will be | |
6399 | an entry for this symbol in the .dynsym section. The dynamic | |
6400 | object will contain position independent code, so all references | |
6401 | from the dynamic object to this symbol will go through the global | |
6402 | offset table. The dynamic linker will use the .dynsym entry to | |
6403 | determine the address it must put in the global offset table, so | |
6404 | both the dynamic object and the regular object will refer to the | |
6405 | same memory location for the variable. */ | |
5bd4f169 | 6406 | |
04c9666a AM |
6407 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6408 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6409 | runtime process image. We need to remember the offset into the |
6410 | .rela.bss section we are going to use. */ | |
6411 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6412 | { | |
eea6121a | 6413 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6414 | h->needs_copy = 1; |
5bd4f169 AM |
6415 | } |
6416 | ||
4ce794b7 | 6417 | s = htab->dynbss; |
5bd4f169 | 6418 | |
027297b7 | 6419 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6420 | } |
6421 | ||
e86ce104 AM |
6422 | /* If given a function descriptor symbol, hide both the function code |
6423 | sym and the descriptor. */ | |
6424 | static void | |
4ce794b7 AM |
6425 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6426 | struct elf_link_hash_entry *h, | |
6427 | bfd_boolean force_local) | |
e86ce104 | 6428 | { |
34814b9f | 6429 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6430 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6431 | ||
34814b9f AM |
6432 | eh = (struct ppc_link_hash_entry *) h; |
6433 | if (eh->is_func_descriptor) | |
e86ce104 | 6434 | { |
34814b9f | 6435 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6436 | |
721956f4 | 6437 | if (fh == NULL) |
d1329ca3 AM |
6438 | { |
6439 | const char *p, *q; | |
6440 | struct ppc_link_hash_table *htab; | |
6441 | char save; | |
6442 | ||
6443 | /* We aren't supposed to use alloca in BFD because on | |
6444 | systems which do not have alloca the version in libiberty | |
6445 | calls xmalloc, which might cause the program to crash | |
6446 | when it runs out of memory. This function doesn't have a | |
6447 | return status, so there's no way to gracefully return an | |
6448 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6449 | accessed; It's either a string in an ELF string table, |
6450 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6451 | |
34814b9f | 6452 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6453 | save = *p; |
6454 | *(char *) p = '.'; | |
6455 | htab = ppc_hash_table (info); | |
34814b9f AM |
6456 | fh = (struct ppc_link_hash_entry *) |
6457 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6458 | *(char *) p = save; |
6459 | ||
6460 | /* Unfortunately, if it so happens that the string we were | |
6461 | looking for was allocated immediately before this string, | |
6462 | then we overwrote the string terminator. That's the only | |
6463 | reason the lookup should fail. */ | |
6464 | if (fh == NULL) | |
6465 | { | |
34814b9f AM |
6466 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6467 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6468 | --q, --p; |
34814b9f AM |
6469 | if (q < eh->elf.root.root.string && *p == '.') |
6470 | fh = (struct ppc_link_hash_entry *) | |
6471 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6472 | } |
6473 | if (fh != NULL) | |
6474 | { | |
34814b9f AM |
6475 | eh->oh = fh; |
6476 | fh->oh = eh; | |
d1329ca3 AM |
6477 | } |
6478 | } | |
e86ce104 | 6479 | if (fh != NULL) |
34814b9f | 6480 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6481 | } |
6482 | } | |
6483 | ||
411e1bfb | 6484 | static bfd_boolean |
8843416a AM |
6485 | get_sym_h (struct elf_link_hash_entry **hp, |
6486 | Elf_Internal_Sym **symp, | |
6487 | asection **symsecp, | |
6488 | char **tls_maskp, | |
6489 | Elf_Internal_Sym **locsymsp, | |
6490 | unsigned long r_symndx, | |
6491 | bfd *ibfd) | |
411e1bfb | 6492 | { |
0ffa91dd | 6493 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6494 | |
6495 | if (r_symndx >= symtab_hdr->sh_info) | |
6496 | { | |
6497 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6498 | struct elf_link_hash_entry *h; | |
6499 | ||
6500 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6501 | h = elf_follow_link (h); |
411e1bfb AM |
6502 | |
6503 | if (hp != NULL) | |
6504 | *hp = h; | |
6505 | ||
6506 | if (symp != NULL) | |
6507 | *symp = NULL; | |
6508 | ||
6509 | if (symsecp != NULL) | |
6510 | { | |
6511 | asection *symsec = NULL; | |
6512 | if (h->root.type == bfd_link_hash_defined | |
6513 | || h->root.type == bfd_link_hash_defweak) | |
6514 | symsec = h->root.u.def.section; | |
6515 | *symsecp = symsec; | |
6516 | } | |
6517 | ||
e7b938ca | 6518 | if (tls_maskp != NULL) |
411e1bfb AM |
6519 | { |
6520 | struct ppc_link_hash_entry *eh; | |
6521 | ||
6522 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6523 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6524 | } |
6525 | } | |
6526 | else | |
6527 | { | |
6528 | Elf_Internal_Sym *sym; | |
6529 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6530 | ||
6531 | if (locsyms == NULL) | |
6532 | { | |
6533 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6534 | if (locsyms == NULL) | |
6535 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6536 | symtab_hdr->sh_info, | |
6537 | 0, NULL, NULL, NULL); | |
6538 | if (locsyms == NULL) | |
6539 | return FALSE; | |
6540 | *locsymsp = locsyms; | |
6541 | } | |
6542 | sym = locsyms + r_symndx; | |
6543 | ||
6544 | if (hp != NULL) | |
6545 | *hp = NULL; | |
6546 | ||
6547 | if (symp != NULL) | |
6548 | *symp = sym; | |
6549 | ||
6550 | if (symsecp != NULL) | |
cb33740c | 6551 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6552 | |
e7b938ca | 6553 | if (tls_maskp != NULL) |
411e1bfb AM |
6554 | { |
6555 | struct got_entry **lgot_ents; | |
e7b938ca | 6556 | char *tls_mask; |
411e1bfb | 6557 | |
e7b938ca | 6558 | tls_mask = NULL; |
411e1bfb AM |
6559 | lgot_ents = elf_local_got_ents (ibfd); |
6560 | if (lgot_ents != NULL) | |
6561 | { | |
e054468f AM |
6562 | struct plt_entry **local_plt = (struct plt_entry **) |
6563 | (lgot_ents + symtab_hdr->sh_info); | |
6564 | char *lgot_masks = (char *) | |
6565 | (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 6566 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6567 | } |
e7b938ca | 6568 | *tls_maskp = tls_mask; |
411e1bfb AM |
6569 | } |
6570 | } | |
6571 | return TRUE; | |
6572 | } | |
6573 | ||
e7b938ca | 6574 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6575 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6576 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6577 | |
6578 | static int | |
3a71aa26 AM |
6579 | get_tls_mask (char **tls_maskp, |
6580 | unsigned long *toc_symndx, | |
6581 | bfd_vma *toc_addend, | |
0d4792f7 | 6582 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6583 | const Elf_Internal_Rela *rel, |
6584 | bfd *ibfd) | |
411e1bfb AM |
6585 | { |
6586 | unsigned long r_symndx; | |
0d4792f7 | 6587 | int next_r; |
411e1bfb AM |
6588 | struct elf_link_hash_entry *h; |
6589 | Elf_Internal_Sym *sym; | |
6590 | asection *sec; | |
6591 | bfd_vma off; | |
6592 | ||
6593 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6594 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6595 | return 0; |
411e1bfb | 6596 | |
e7b938ca | 6597 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6598 | || sec == NULL |
7c8fe5c4 | 6599 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6600 | return 1; |
411e1bfb AM |
6601 | |
6602 | /* Look inside a TOC section too. */ | |
6603 | if (h != NULL) | |
6604 | { | |
6605 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6606 | off = h->root.u.def.value; | |
6607 | } | |
6608 | else | |
6609 | off = sym->st_value; | |
6610 | off += rel->r_addend; | |
6611 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6612 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6613 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6614 | if (toc_symndx != NULL) |
6615 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6616 | if (toc_addend != NULL) |
6617 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6618 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6619 | return 0; | |
0d4792f7 AM |
6620 | if ((h == NULL |
6621 | || ((h->root.type == bfd_link_hash_defined | |
6622 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6623 | && !h->def_dynamic)) |
0d4792f7 AM |
6624 | && (next_r == -1 || next_r == -2)) |
6625 | return 1 - next_r; | |
951fd09b | 6626 | return 1; |
411e1bfb AM |
6627 | } |
6628 | ||
754021d0 | 6629 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6630 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6631 | |
6632 | static bfd_boolean | |
6633 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6634 | { | |
6635 | struct ppc_link_hash_entry *eh; | |
6636 | asection *sym_sec; | |
74f0fb50 | 6637 | struct _opd_sec_data *opd; |
754021d0 AM |
6638 | |
6639 | if (h->root.type == bfd_link_hash_indirect) | |
6640 | return TRUE; | |
6641 | ||
6642 | if (h->root.type == bfd_link_hash_warning) | |
6643 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6644 | ||
6645 | if (h->root.type != bfd_link_hash_defined | |
6646 | && h->root.type != bfd_link_hash_defweak) | |
6647 | return TRUE; | |
6648 | ||
6649 | eh = (struct ppc_link_hash_entry *) h; | |
6650 | if (eh->adjust_done) | |
6651 | return TRUE; | |
6652 | ||
6653 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6654 | opd = get_opd_info (sym_sec); |
6655 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6656 | { |
74f0fb50 | 6657 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6658 | if (adjust == -1) |
6659 | { | |
6660 | /* This entry has been deleted. */ | |
b3fac117 | 6661 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6662 | if (dsec == NULL) |
6663 | { | |
6664 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6665 | if (elf_discarded_section (dsec)) | |
6666 | { | |
b3fac117 | 6667 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6668 | break; |
6669 | } | |
6670 | } | |
4025353c | 6671 | eh->elf.root.u.def.value = 0; |
81688140 | 6672 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6673 | } |
6674 | else | |
6675 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6676 | eh->adjust_done = 1; |
6677 | } | |
6678 | return TRUE; | |
6679 | } | |
6680 | ||
8c1d1bb8 AM |
6681 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6682 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6683 | have already been determined. */ | |
6684 | ||
6685 | static bfd_boolean | |
6686 | dec_dynrel_count (bfd_vma r_info, | |
6687 | asection *sec, | |
6688 | struct bfd_link_info *info, | |
6689 | Elf_Internal_Sym **local_syms, | |
6690 | struct elf_link_hash_entry *h, | |
6691 | asection *sym_sec) | |
6692 | { | |
6693 | enum elf_ppc64_reloc_type r_type; | |
6694 | struct ppc_dyn_relocs *p; | |
6695 | struct ppc_dyn_relocs **pp; | |
6696 | ||
6697 | /* Can this reloc be dynamic? This switch, and later tests here | |
6698 | should be kept in sync with the code in check_relocs. */ | |
6699 | r_type = ELF64_R_TYPE (r_info); | |
6700 | switch (r_type) | |
6701 | { | |
6702 | default: | |
6703 | return TRUE; | |
6704 | ||
6705 | case R_PPC64_TPREL16: | |
6706 | case R_PPC64_TPREL16_LO: | |
6707 | case R_PPC64_TPREL16_HI: | |
6708 | case R_PPC64_TPREL16_HA: | |
6709 | case R_PPC64_TPREL16_DS: | |
6710 | case R_PPC64_TPREL16_LO_DS: | |
6711 | case R_PPC64_TPREL16_HIGHER: | |
6712 | case R_PPC64_TPREL16_HIGHERA: | |
6713 | case R_PPC64_TPREL16_HIGHEST: | |
6714 | case R_PPC64_TPREL16_HIGHESTA: | |
6715 | if (!info->shared) | |
6716 | return TRUE; | |
6717 | ||
6718 | case R_PPC64_TPREL64: | |
6719 | case R_PPC64_DTPMOD64: | |
6720 | case R_PPC64_DTPREL64: | |
6721 | case R_PPC64_ADDR64: | |
6722 | case R_PPC64_REL30: | |
6723 | case R_PPC64_REL32: | |
6724 | case R_PPC64_REL64: | |
6725 | case R_PPC64_ADDR14: | |
6726 | case R_PPC64_ADDR14_BRNTAKEN: | |
6727 | case R_PPC64_ADDR14_BRTAKEN: | |
6728 | case R_PPC64_ADDR16: | |
6729 | case R_PPC64_ADDR16_DS: | |
6730 | case R_PPC64_ADDR16_HA: | |
6731 | case R_PPC64_ADDR16_HI: | |
6732 | case R_PPC64_ADDR16_HIGHER: | |
6733 | case R_PPC64_ADDR16_HIGHERA: | |
6734 | case R_PPC64_ADDR16_HIGHEST: | |
6735 | case R_PPC64_ADDR16_HIGHESTA: | |
6736 | case R_PPC64_ADDR16_LO: | |
6737 | case R_PPC64_ADDR16_LO_DS: | |
6738 | case R_PPC64_ADDR24: | |
6739 | case R_PPC64_ADDR32: | |
6740 | case R_PPC64_UADDR16: | |
6741 | case R_PPC64_UADDR32: | |
6742 | case R_PPC64_UADDR64: | |
6743 | case R_PPC64_TOC: | |
6744 | break; | |
6745 | } | |
6746 | ||
6747 | if (local_syms != NULL) | |
6748 | { | |
6749 | unsigned long r_symndx; | |
6750 | Elf_Internal_Sym *sym; | |
6751 | bfd *ibfd = sec->owner; | |
6752 | ||
6753 | r_symndx = ELF64_R_SYM (r_info); | |
6754 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6755 | return FALSE; | |
6756 | } | |
6757 | ||
6758 | if ((info->shared | |
1d483afe | 6759 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6760 | || (h != NULL |
6761 | && (!info->symbolic | |
6762 | || h->root.type == bfd_link_hash_defweak | |
6763 | || !h->def_regular)))) | |
6764 | || (ELIMINATE_COPY_RELOCS | |
6765 | && !info->shared | |
6766 | && h != NULL | |
6767 | && (h->root.type == bfd_link_hash_defweak | |
6768 | || !h->def_regular))) | |
6769 | ; | |
6770 | else | |
6771 | return TRUE; | |
6772 | ||
6773 | if (h != NULL) | |
6774 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6775 | else |
6edfbbad | 6776 | { |
60124e18 AM |
6777 | if (sym_sec != NULL) |
6778 | { | |
6779 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6780 | pp = (struct ppc_dyn_relocs **) vpp; | |
6781 | } | |
6782 | else | |
6783 | { | |
6784 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6785 | pp = (struct ppc_dyn_relocs **) vpp; | |
6786 | } | |
6787 | ||
6788 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6789 | with local syms for a given section. Don't report a dynreloc | |
6790 | miscount. */ | |
6791 | if (*pp == NULL) | |
6792 | return TRUE; | |
6edfbbad | 6793 | } |
8c1d1bb8 AM |
6794 | |
6795 | while ((p = *pp) != NULL) | |
6796 | { | |
6797 | if (p->sec == sec) | |
6798 | { | |
1d483afe | 6799 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6800 | p->pc_count -= 1; |
6801 | p->count -= 1; | |
6802 | if (p->count == 0) | |
6803 | *pp = p->next; | |
6804 | return TRUE; | |
6805 | } | |
6806 | pp = &p->next; | |
6807 | } | |
6808 | ||
6809 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6810 | sec->owner, sec); | |
6811 | bfd_set_error (bfd_error_bad_value); | |
6812 | return FALSE; | |
6813 | } | |
6814 | ||
754021d0 AM |
6815 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6816 | only remove those associated with functions in discarded link-once | |
6817 | sections, or weakly defined functions that have been overridden. It | |
6818 | would be possible to remove many more entries for statically linked | |
6819 | applications. */ | |
6820 | ||
b34976b6 | 6821 | bfd_boolean |
3f764659 JJ |
6822 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6823 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6824 | { |
6825 | bfd *ibfd; | |
754021d0 | 6826 | bfd_boolean some_edited = FALSE; |
3f764659 | 6827 | asection *need_pad = NULL; |
1e2f5b6e | 6828 | |
411e1bfb | 6829 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6830 | { |
6831 | asection *sec; | |
6832 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6833 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6834 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6835 | struct elf_link_hash_entry **sym_hashes; |
6836 | bfd_vma offset; | |
74f0fb50 | 6837 | struct _opd_sec_data *opd; |
3f764659 JJ |
6838 | bfd_boolean need_edit, add_aux_fields; |
6839 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6840 | |
6841 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6842 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6843 | continue; |
6844 | ||
4b85d634 AM |
6845 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6846 | continue; | |
6847 | ||
1e2f5b6e AM |
6848 | if (sec->output_section == bfd_abs_section_ptr) |
6849 | continue; | |
6850 | ||
6851 | /* Look through the section relocs. */ | |
6852 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6853 | continue; | |
6854 | ||
6cdc0ccc | 6855 | local_syms = NULL; |
0ffa91dd | 6856 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6857 | sym_hashes = elf_sym_hashes (ibfd); |
6858 | ||
6859 | /* Read the relocations. */ | |
4ce794b7 | 6860 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6861 | info->keep_memory); |
1e2f5b6e | 6862 | if (relstart == NULL) |
b34976b6 | 6863 | return FALSE; |
1e2f5b6e AM |
6864 | |
6865 | /* First run through the relocs to check they are sane, and to | |
6866 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6867 | need_edit = FALSE; |
3f764659 | 6868 | need_pad = sec; |
1e2f5b6e AM |
6869 | offset = 0; |
6870 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6871 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6872 | { |
04c9666a | 6873 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6874 | unsigned long r_symndx; |
6875 | asection *sym_sec; | |
6876 | struct elf_link_hash_entry *h; | |
6877 | Elf_Internal_Sym *sym; | |
6878 | ||
3f764659 | 6879 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6880 | only interested in the reloc pointing to a function entry |
6881 | point. */ | |
50bc7936 AM |
6882 | if (rel->r_offset != offset |
6883 | || rel + 1 >= relend | |
6884 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6885 | { |
6886 | /* If someone messes with .opd alignment then after a | |
6887 | "ld -r" we might have padding in the middle of .opd. | |
6888 | Also, there's nothing to prevent someone putting | |
6889 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6890 | optimization for them! */ |
3f764659 | 6891 | broken_opd: |
1e2f5b6e | 6892 | (*_bfd_error_handler) |
d003868e | 6893 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6894 | need_edit = FALSE; |
1e2f5b6e AM |
6895 | break; |
6896 | } | |
6897 | ||
50bc7936 AM |
6898 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6899 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6900 | { | |
6901 | (*_bfd_error_handler) | |
d003868e AM |
6902 | (_("%B: unexpected reloc type %u in .opd section"), |
6903 | ibfd, r_type); | |
50bc7936 AM |
6904 | need_edit = FALSE; |
6905 | break; | |
6906 | } | |
6907 | ||
1e2f5b6e | 6908 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6909 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6910 | r_symndx, ibfd)) | |
50bc7936 | 6911 | goto error_ret; |
1e2f5b6e AM |
6912 | |
6913 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6914 | { | |
411e1bfb AM |
6915 | const char *sym_name; |
6916 | if (h != NULL) | |
6917 | sym_name = h->root.root.string; | |
6918 | else | |
26c61ae5 L |
6919 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6920 | sym_sec); | |
411e1bfb | 6921 | |
1e2f5b6e | 6922 | (*_bfd_error_handler) |
d003868e AM |
6923 | (_("%B: undefined sym `%s' in .opd section"), |
6924 | ibfd, sym_name); | |
b34976b6 | 6925 | need_edit = FALSE; |
1e2f5b6e AM |
6926 | break; |
6927 | } | |
6928 | ||
51020317 AM |
6929 | /* opd entries are always for functions defined in the |
6930 | current input bfd. If the symbol isn't defined in the | |
6931 | input bfd, then we won't be using the function in this | |
6932 | bfd; It must be defined in a linkonce section in another | |
6933 | bfd, or is weak. It's also possible that we are | |
6934 | discarding the function due to a linker script /DISCARD/, | |
6935 | which we test for via the output_section. */ | |
6936 | if (sym_sec->owner != ibfd | |
6937 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6938 | need_edit = TRUE; |
1e2f5b6e | 6939 | |
50bc7936 | 6940 | rel += 2; |
3f764659 JJ |
6941 | if (rel == relend |
6942 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6943 | { | |
6944 | if (sec->size == offset + 24) | |
6945 | { | |
6946 | need_pad = NULL; | |
6947 | break; | |
6948 | } | |
6949 | if (rel == relend && sec->size == offset + 16) | |
6950 | { | |
6951 | cnt_16b++; | |
6952 | break; | |
6953 | } | |
6954 | goto broken_opd; | |
6955 | } | |
6956 | ||
6957 | if (rel->r_offset == offset + 24) | |
6958 | offset += 24; | |
6959 | else if (rel->r_offset != offset + 16) | |
6960 | goto broken_opd; | |
6961 | else if (rel + 1 < relend | |
6962 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6963 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6964 | { | |
6965 | offset += 16; | |
6966 | cnt_16b++; | |
6967 | } | |
6968 | else if (rel + 2 < relend | |
6969 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6970 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6971 | { | |
6972 | offset += 24; | |
6973 | rel += 1; | |
6974 | } | |
6975 | else | |
6976 | goto broken_opd; | |
1e2f5b6e AM |
6977 | } |
6978 | ||
3f764659 JJ |
6979 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6980 | ||
6981 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6982 | { |
6983 | Elf_Internal_Rela *write_rel; | |
6984 | bfd_byte *rptr, *wptr; | |
983bddc8 | 6985 | bfd_byte *new_contents; |
b34976b6 | 6986 | bfd_boolean skip; |
3f764659 | 6987 | long opd_ent_size; |
74f0fb50 AM |
6988 | bfd_size_type amt; |
6989 | ||
983bddc8 | 6990 | new_contents = NULL; |
74f0fb50 AM |
6991 | amt = sec->size * sizeof (long) / 8; |
6992 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
6993 | opd->adjust = bfd_zalloc (obfd, amt); | |
6994 | if (opd->adjust == NULL) | |
6995 | return FALSE; | |
6996 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
6997 | |
6998 | /* This seems a waste of time as input .opd sections are all | |
6999 | zeros as generated by gcc, but I suppose there's no reason | |
7000 | this will always be so. We might start putting something in | |
7001 | the third word of .opd entries. */ | |
7002 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7003 | { | |
eea6121a AM |
7004 | bfd_byte *loc; |
7005 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7006 | { |
eea6121a AM |
7007 | if (loc != NULL) |
7008 | free (loc); | |
50bc7936 | 7009 | error_ret: |
6cdc0ccc AM |
7010 | if (local_syms != NULL |
7011 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7012 | free (local_syms); | |
6cdc0ccc AM |
7013 | if (elf_section_data (sec)->relocs != relstart) |
7014 | free (relstart); | |
b34976b6 | 7015 | return FALSE; |
6cdc0ccc | 7016 | } |
1e2f5b6e AM |
7017 | sec->contents = loc; |
7018 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7019 | } | |
7020 | ||
7021 | elf_section_data (sec)->relocs = relstart; | |
7022 | ||
3f764659 | 7023 | new_contents = sec->contents; |
3f764659 JJ |
7024 | if (add_aux_fields) |
7025 | { | |
7026 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7027 | if (new_contents == NULL) | |
7028 | return FALSE; | |
7029 | need_pad = FALSE; | |
3f764659 | 7030 | } |
b4f4e59f AM |
7031 | wptr = new_contents; |
7032 | rptr = sec->contents; | |
3f764659 | 7033 | |
1e2f5b6e | 7034 | write_rel = relstart; |
b34976b6 | 7035 | skip = FALSE; |
1e2f5b6e | 7036 | offset = 0; |
3f764659 | 7037 | opd_ent_size = 0; |
1e2f5b6e AM |
7038 | for (rel = relstart; rel < relend; rel++) |
7039 | { | |
50bc7936 AM |
7040 | unsigned long r_symndx; |
7041 | asection *sym_sec; | |
7042 | struct elf_link_hash_entry *h; | |
7043 | Elf_Internal_Sym *sym; | |
7044 | ||
7045 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7046 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7047 | r_symndx, ibfd)) |
50bc7936 AM |
7048 | goto error_ret; |
7049 | ||
1e2f5b6e AM |
7050 | if (rel->r_offset == offset) |
7051 | { | |
50bc7936 | 7052 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7053 | |
7054 | /* See if the .opd entry is full 24 byte or | |
7055 | 16 byte (with fd_aux entry overlapped with next | |
7056 | fd_func). */ | |
7057 | opd_ent_size = 24; | |
7058 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7059 | || (rel + 3 < relend | |
7060 | && rel[2].r_offset == offset + 16 | |
7061 | && rel[3].r_offset == offset + 24 | |
7062 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7063 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7064 | opd_ent_size = 16; | |
7065 | ||
4025353c AM |
7066 | if (h != NULL |
7067 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7068 | { |
b31867b6 AM |
7069 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, |
7070 | ppc_hash_table (info)); | |
c4f68ce3 AM |
7071 | if (fdh != NULL |
7072 | && fdh->elf.root.type != bfd_link_hash_defined | |
7073 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7074 | fdh = NULL; | |
7075 | } | |
1e2f5b6e | 7076 | |
51020317 AM |
7077 | skip = (sym_sec->owner != ibfd |
7078 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7079 | if (skip) |
7080 | { | |
4025353c | 7081 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7082 | { |
7083 | /* Arrange for the function descriptor sym | |
7084 | to be dropped. */ | |
d6fe2dc1 AM |
7085 | fdh->elf.root.u.def.value = 0; |
7086 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7087 | } |
74f0fb50 | 7088 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7089 | } |
7090 | else | |
1e2f5b6e AM |
7091 | { |
7092 | /* We'll be keeping this opd entry. */ | |
7093 | ||
4025353c | 7094 | if (fdh != NULL) |
1e2f5b6e | 7095 | { |
754021d0 AM |
7096 | /* Redefine the function descriptor symbol to |
7097 | this location in the opd section. It is | |
7098 | necessary to update the value here rather | |
7099 | than using an array of adjustments as we do | |
7100 | for local symbols, because various places | |
7101 | in the generic ELF code use the value | |
7102 | stored in u.def.value. */ | |
3f764659 | 7103 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7104 | fdh->adjust_done = 1; |
1e2f5b6e | 7105 | } |
754021d0 AM |
7106 | |
7107 | /* Local syms are a bit tricky. We could | |
7108 | tweak them as they can be cached, but | |
7109 | we'd need to look through the local syms | |
7110 | for the function descriptor sym which we | |
7111 | don't have at the moment. So keep an | |
7112 | array of adjustments. */ | |
74f0fb50 | 7113 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7114 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7115 | |
7116 | if (wptr != rptr) | |
3f764659 JJ |
7117 | memcpy (wptr, rptr, opd_ent_size); |
7118 | wptr += opd_ent_size; | |
7119 | if (add_aux_fields && opd_ent_size == 16) | |
7120 | { | |
7121 | memset (wptr, '\0', 8); | |
7122 | wptr += 8; | |
7123 | } | |
1e2f5b6e | 7124 | } |
3f764659 JJ |
7125 | rptr += opd_ent_size; |
7126 | offset += opd_ent_size; | |
1e2f5b6e AM |
7127 | } |
7128 | ||
50bc7936 AM |
7129 | if (skip) |
7130 | { | |
60124e18 AM |
7131 | if (!NO_OPD_RELOCS |
7132 | && !info->relocatable | |
18d944df AM |
7133 | && !dec_dynrel_count (rel->r_info, sec, info, |
7134 | NULL, h, sym_sec)) | |
8c1d1bb8 | 7135 | goto error_ret; |
50bc7936 AM |
7136 | } |
7137 | else | |
1e2f5b6e | 7138 | { |
50bc7936 AM |
7139 | /* We need to adjust any reloc offsets to point to the |
7140 | new opd entries. While we're at it, we may as well | |
7141 | remove redundant relocs. */ | |
74f0fb50 | 7142 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7143 | if (write_rel != rel) |
7144 | memcpy (write_rel, rel, sizeof (*rel)); | |
7145 | ++write_rel; | |
7146 | } | |
7147 | } | |
7148 | ||
3f764659 | 7149 | sec->size = wptr - new_contents; |
1e2f5b6e | 7150 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7151 | if (add_aux_fields) |
7152 | { | |
7153 | free (sec->contents); | |
7154 | sec->contents = new_contents; | |
7155 | } | |
7156 | ||
05bf9422 | 7157 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
7158 | elf_bfd_final_link if we are emitting relocs. */ |
7159 | elf_section_data (sec)->rel_hdr.sh_size | |
7160 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
7161 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 7162 | some_edited = TRUE; |
1e2f5b6e | 7163 | } |
6cdc0ccc | 7164 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7165 | free (relstart); |
6cdc0ccc | 7166 | |
411e1bfb AM |
7167 | if (local_syms != NULL |
7168 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7169 | { | |
7170 | if (!info->keep_memory) | |
7171 | free (local_syms); | |
7172 | else | |
7173 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7174 | } | |
7175 | } | |
7176 | ||
754021d0 AM |
7177 | if (some_edited) |
7178 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7179 | ||
3f764659 JJ |
7180 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7181 | long, add a 8 byte padding after it. */ | |
7182 | if (need_pad != NULL && !info->relocatable) | |
7183 | { | |
7184 | bfd_byte *p; | |
7185 | ||
7186 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7187 | { | |
7188 | BFD_ASSERT (need_pad->size > 0); | |
7189 | ||
7190 | p = bfd_malloc (need_pad->size + 8); | |
7191 | if (p == NULL) | |
7192 | return FALSE; | |
699733f6 | 7193 | |
3f764659 JJ |
7194 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7195 | p, 0, need_pad->size)) | |
7196 | return FALSE; | |
7197 | ||
7198 | need_pad->contents = p; | |
7199 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7200 | } | |
7201 | else | |
7202 | { | |
7203 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7204 | if (p == NULL) | |
7205 | return FALSE; | |
7206 | ||
7207 | need_pad->contents = p; | |
7208 | } | |
7209 | ||
7210 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7211 | need_pad->size += 8; | |
7212 | } | |
7213 | ||
411e1bfb AM |
7214 | return TRUE; |
7215 | } | |
7216 | ||
e1918d23 | 7217 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7218 | |
e1918d23 | 7219 | asection * |
a7f2871e AM |
7220 | ppc64_elf_tls_setup (bfd *obfd, |
7221 | struct bfd_link_info *info, | |
7222 | int no_tls_get_addr_opt) | |
411e1bfb | 7223 | { |
411e1bfb AM |
7224 | struct ppc_link_hash_table *htab; |
7225 | ||
411e1bfb | 7226 | htab = ppc_hash_table (info); |
3a71aa26 AM |
7227 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7228 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7229 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7230 | /* Move dynamic linking info to the function descriptor sym. */ |
7231 | if (htab->tls_get_addr != NULL) | |
7232 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7233 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7234 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7235 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7236 | if (!no_tls_get_addr_opt) |
7237 | { | |
7238 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7239 | ||
7240 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7241 | FALSE, FALSE, TRUE); | |
7242 | if (opt != NULL) | |
7243 | func_desc_adjust (opt, info); | |
7244 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7245 | FALSE, FALSE, TRUE); | |
7246 | if (opt_fd != NULL | |
7247 | && (opt_fd->root.type == bfd_link_hash_defined | |
7248 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7249 | { | |
7250 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7251 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7252 | be calling __tls_get_addr via a plt call stub, then | |
7253 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7254 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7255 | if (htab->elf.dynamic_sections_created | |
7256 | && tga_fd != NULL | |
7257 | && (tga_fd->type == STT_FUNC | |
7258 | || tga_fd->needs_plt) | |
7259 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7260 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7261 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7262 | { | |
7263 | struct plt_entry *ent; | |
7264 | ||
7265 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7266 | if (ent->plt.refcount > 0) | |
7267 | break; | |
7268 | if (ent != NULL) | |
7269 | { | |
7270 | tga_fd->root.type = bfd_link_hash_indirect; | |
7271 | tga_fd->root.u.i.link = &opt_fd->root; | |
7272 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7273 | if (opt_fd->dynindx != -1) | |
7274 | { | |
7275 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7276 | opt_fd->dynindx = -1; | |
7277 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7278 | opt_fd->dynstr_index); | |
7279 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
7280 | return FALSE; | |
7281 | } | |
7282 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7283 | tga = &htab->tls_get_addr->elf; | |
7284 | if (opt != NULL && tga != NULL) | |
7285 | { | |
7286 | tga->root.type = bfd_link_hash_indirect; | |
7287 | tga->root.u.i.link = &opt->root; | |
7288 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7289 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7290 | tga->forced_local); | |
7291 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7292 | } | |
7293 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7294 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7295 | if (htab->tls_get_addr != NULL) | |
7296 | { | |
7297 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7298 | htab->tls_get_addr->is_func = 1; | |
7299 | } | |
7300 | } | |
7301 | } | |
7302 | } | |
7303 | else | |
7304 | no_tls_get_addr_opt = TRUE; | |
7305 | } | |
7306 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
3a71aa26 AM |
7307 | return _bfd_elf_tls_setup (obfd, info); |
7308 | } | |
8387904d | 7309 | |
3a71aa26 AM |
7310 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7311 | HASH1 or HASH2. */ | |
8387904d | 7312 | |
3a71aa26 AM |
7313 | static bfd_boolean |
7314 | branch_reloc_hash_match (const bfd *ibfd, | |
7315 | const Elf_Internal_Rela *rel, | |
7316 | const struct ppc_link_hash_entry *hash1, | |
7317 | const struct ppc_link_hash_entry *hash2) | |
7318 | { | |
7319 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7320 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7321 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7322 | ||
e054468f | 7323 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7324 | { |
3a71aa26 AM |
7325 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7326 | struct elf_link_hash_entry *h; | |
8387904d | 7327 | |
3a71aa26 | 7328 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7329 | h = elf_follow_link (h); |
3a71aa26 AM |
7330 | if (h == &hash1->elf || h == &hash2->elf) |
7331 | return TRUE; | |
a48ebf4d | 7332 | } |
3a71aa26 | 7333 | return FALSE; |
951fd09b | 7334 | } |
411e1bfb | 7335 | |
951fd09b AM |
7336 | /* Run through all the TLS relocs looking for optimization |
7337 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7338 | a preliminary section layout so that we know the TLS segment | |
7339 | offsets. We can't optimize earlier because some optimizations need | |
7340 | to know the tp offset, and we need to optimize before allocating | |
7341 | dynamic relocations. */ | |
7342 | ||
7343 | bfd_boolean | |
4ce794b7 | 7344 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
7345 | { |
7346 | bfd *ibfd; | |
7347 | asection *sec; | |
7348 | struct ppc_link_hash_table *htab; | |
102890f0 | 7349 | int pass; |
951fd09b | 7350 | |
1d483afe | 7351 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7352 | return TRUE; |
7353 | ||
951fd09b | 7354 | htab = ppc_hash_table (info); |
411e1bfb AM |
7355 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7356 | { | |
7357 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
7358 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
7359 | unsigned char *toc_ref = NULL; | |
411e1bfb | 7360 | |
102890f0 AM |
7361 | /* Look at all the sections for this file. Make two passes over |
7362 | the relocs. On the first pass, mark toc entries involved | |
7363 | with tls relocs, and check that tls relocs involved in | |
7364 | setting up a tls_get_addr call are indeed followed by such a | |
7365 | call. If they are not, exclude them from the optimizations | |
7366 | done on the second pass. */ | |
7367 | for (pass = 0; pass < 2; ++pass) | |
7368 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7369 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7370 | { | |
7371 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 7372 | |
102890f0 AM |
7373 | /* Read the relocations. */ |
7374 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7375 | info->keep_memory); | |
7376 | if (relstart == NULL) | |
7377 | return FALSE; | |
411e1bfb | 7378 | |
102890f0 AM |
7379 | relend = relstart + sec->reloc_count; |
7380 | for (rel = relstart; rel < relend; rel++) | |
7381 | { | |
7382 | enum elf_ppc64_reloc_type r_type; | |
7383 | unsigned long r_symndx; | |
7384 | struct elf_link_hash_entry *h; | |
7385 | Elf_Internal_Sym *sym; | |
7386 | asection *sym_sec; | |
7387 | char *tls_mask; | |
7388 | char tls_set, tls_clear, tls_type = 0; | |
7389 | bfd_vma value; | |
7390 | bfd_boolean ok_tprel, is_local; | |
7391 | long toc_ref_index = 0; | |
7392 | int expecting_tls_get_addr = 0; | |
411e1bfb | 7393 | |
102890f0 AM |
7394 | r_symndx = ELF64_R_SYM (rel->r_info); |
7395 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7396 | r_symndx, ibfd)) | |
7397 | { | |
7398 | err_free_rel: | |
7399 | if (elf_section_data (sec)->relocs != relstart) | |
7400 | free (relstart); | |
7401 | if (toc_ref != NULL) | |
7402 | free (toc_ref); | |
7403 | if (locsyms != NULL | |
0ffa91dd | 7404 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7405 | != (unsigned char *) locsyms)) |
7406 | free (locsyms); | |
7407 | return FALSE; | |
7408 | } | |
411e1bfb | 7409 | |
102890f0 AM |
7410 | if (h != NULL) |
7411 | { | |
766bc656 AM |
7412 | if (h->root.type == bfd_link_hash_defined |
7413 | || h->root.type == bfd_link_hash_defweak) | |
7414 | value = h->root.u.def.value; | |
7415 | else if (h->root.type == bfd_link_hash_undefweak) | |
7416 | value = 0; | |
7417 | else | |
102890f0 | 7418 | continue; |
102890f0 AM |
7419 | } |
7420 | else | |
7421 | /* Symbols referenced by TLS relocs must be of type | |
7422 | STT_TLS. So no need for .opd local sym adjust. */ | |
7423 | value = sym->st_value; | |
7424 | ||
7425 | ok_tprel = FALSE; | |
7426 | is_local = FALSE; | |
7427 | if (h == NULL | |
7428 | || !h->def_dynamic) | |
7429 | { | |
7430 | is_local = TRUE; | |
766bc656 AM |
7431 | if (h != NULL |
7432 | && h->root.type == bfd_link_hash_undefweak) | |
7433 | ok_tprel = TRUE; | |
7434 | else | |
7435 | { | |
7436 | value += sym_sec->output_offset; | |
7437 | value += sym_sec->output_section->vma; | |
7438 | value -= htab->elf.tls_sec->vma; | |
7439 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7440 | < (bfd_vma) 1 << 32); | |
7441 | } | |
102890f0 | 7442 | } |
951fd09b | 7443 | |
102890f0 AM |
7444 | r_type = ELF64_R_TYPE (rel->r_info); |
7445 | switch (r_type) | |
7446 | { | |
7447 | case R_PPC64_GOT_TLSLD16: | |
7448 | case R_PPC64_GOT_TLSLD16_LO: | |
7449 | expecting_tls_get_addr = 1; | |
7450 | /* Fall thru */ | |
7451 | ||
7452 | case R_PPC64_GOT_TLSLD16_HI: | |
7453 | case R_PPC64_GOT_TLSLD16_HA: | |
7454 | /* These relocs should never be against a symbol | |
7455 | defined in a shared lib. Leave them alone if | |
7456 | that turns out to be the case. */ | |
7457 | if (!is_local) | |
7458 | continue; | |
411e1bfb | 7459 | |
102890f0 | 7460 | /* LD -> LE */ |
411e1bfb | 7461 | tls_set = 0; |
102890f0 AM |
7462 | tls_clear = TLS_LD; |
7463 | tls_type = TLS_TLS | TLS_LD; | |
7464 | break; | |
411e1bfb | 7465 | |
102890f0 AM |
7466 | case R_PPC64_GOT_TLSGD16: |
7467 | case R_PPC64_GOT_TLSGD16_LO: | |
7468 | expecting_tls_get_addr = 1; | |
7469 | /* Fall thru */ | |
7470 | ||
7471 | case R_PPC64_GOT_TLSGD16_HI: | |
7472 | case R_PPC64_GOT_TLSGD16_HA: | |
7473 | if (ok_tprel) | |
7474 | /* GD -> LE */ | |
411e1bfb | 7475 | tls_set = 0; |
102890f0 AM |
7476 | else |
7477 | /* GD -> IE */ | |
7478 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7479 | tls_clear = TLS_GD; | |
7480 | tls_type = TLS_TLS | TLS_GD; | |
7481 | break; | |
7482 | ||
7483 | case R_PPC64_GOT_TPREL16_DS: | |
7484 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7485 | case R_PPC64_GOT_TPREL16_HI: | |
7486 | case R_PPC64_GOT_TPREL16_HA: | |
7487 | if (ok_tprel) | |
7488 | { | |
7489 | /* IE -> LE */ | |
7490 | tls_set = 0; | |
7491 | tls_clear = TLS_TPREL; | |
7492 | tls_type = TLS_TLS | TLS_TPREL; | |
7493 | break; | |
7494 | } | |
411e1bfb AM |
7495 | continue; |
7496 | ||
102890f0 AM |
7497 | case R_PPC64_TOC16: |
7498 | case R_PPC64_TOC16_LO: | |
7499 | case R_PPC64_TLS: | |
727fc41e AM |
7500 | case R_PPC64_TLSGD: |
7501 | case R_PPC64_TLSLD: | |
102890f0 AM |
7502 | if (sym_sec == NULL || sym_sec != toc) |
7503 | continue; | |
7504 | ||
7505 | /* Mark this toc entry as referenced by a TLS | |
7506 | code sequence. We can do that now in the | |
7507 | case of R_PPC64_TLS, and after checking for | |
7508 | tls_get_addr for the TOC16 relocs. */ | |
7509 | if (toc_ref == NULL) | |
7510 | { | |
7511 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7512 | if (toc_ref == NULL) | |
7513 | goto err_free_rel; | |
7514 | } | |
7515 | if (h != NULL) | |
7516 | value = h->root.u.def.value; | |
7517 | else | |
7518 | value = sym->st_value; | |
7519 | value += rel->r_addend; | |
7520 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7521 | toc_ref_index = value / 8; | |
727fc41e AM |
7522 | if (r_type == R_PPC64_TLS |
7523 | || r_type == R_PPC64_TLSGD | |
7524 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7525 | { |
7526 | toc_ref[toc_ref_index] = 1; | |
7527 | continue; | |
7528 | } | |
7529 | ||
7530 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7531 | continue; | |
7532 | ||
7533 | tls_set = 0; | |
7534 | tls_clear = 0; | |
7535 | expecting_tls_get_addr = 2; | |
7536 | break; | |
7537 | ||
7538 | case R_PPC64_TPREL64: | |
7539 | if (pass == 0 | |
7540 | || sec != toc | |
7541 | || toc_ref == NULL | |
7542 | || !toc_ref[rel->r_offset / 8]) | |
7543 | continue; | |
7544 | if (ok_tprel) | |
7545 | { | |
7546 | /* IE -> LE */ | |
7547 | tls_set = TLS_EXPLICIT; | |
7548 | tls_clear = TLS_TPREL; | |
7549 | break; | |
7550 | } | |
7551 | continue; | |
7552 | ||
7553 | case R_PPC64_DTPMOD64: | |
7554 | if (pass == 0 | |
7555 | || sec != toc | |
7556 | || toc_ref == NULL | |
7557 | || !toc_ref[rel->r_offset / 8]) | |
7558 | continue; | |
7559 | if (rel + 1 < relend | |
7560 | && (rel[1].r_info | |
7561 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7562 | && rel[1].r_offset == rel->r_offset + 8) | |
7563 | { | |
7564 | if (ok_tprel) | |
7565 | /* GD -> LE */ | |
7566 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7567 | else | |
7568 | /* GD -> IE */ | |
7569 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7570 | tls_clear = TLS_GD; | |
7571 | } | |
7572 | else | |
7573 | { | |
7574 | if (!is_local) | |
7575 | continue; | |
7576 | ||
7577 | /* LD -> LE */ | |
7578 | tls_set = TLS_EXPLICIT; | |
7579 | tls_clear = TLS_LD; | |
7580 | } | |
7581 | break; | |
7582 | ||
7583 | default: | |
7584 | continue; | |
7585 | } | |
7586 | ||
7587 | if (pass == 0) | |
7588 | { | |
727fc41e AM |
7589 | if (!expecting_tls_get_addr |
7590 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7591 | continue; |
7592 | ||
3a71aa26 AM |
7593 | if (rel + 1 < relend |
7594 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7595 | htab->tls_get_addr, | |
7596 | htab->tls_get_addr_fd)) | |
102890f0 | 7597 | { |
3a71aa26 | 7598 | if (expecting_tls_get_addr == 2) |
102890f0 | 7599 | { |
3a71aa26 AM |
7600 | /* Check for toc tls entries. */ |
7601 | char *toc_tls; | |
7602 | int retval; | |
7603 | ||
7604 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7605 | &locsyms, | |
7606 | rel, ibfd); | |
7607 | if (retval == 0) | |
7608 | goto err_free_rel; | |
7609 | if (retval > 1 && toc_tls != NULL) | |
7610 | toc_ref[toc_ref_index] = 1; | |
102890f0 | 7611 | } |
3a71aa26 | 7612 | continue; |
102890f0 AM |
7613 | } |
7614 | ||
7615 | if (expecting_tls_get_addr != 1) | |
7616 | continue; | |
7617 | ||
7618 | /* Uh oh, we didn't find the expected call. We | |
7619 | could just mark this symbol to exclude it | |
7620 | from tls optimization but it's safer to skip | |
7621 | the entire section. */ | |
7622 | sec->has_tls_reloc = 0; | |
7623 | break; | |
7624 | } | |
7625 | ||
85f7a9cb | 7626 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7627 | { |
7628 | struct plt_entry *ent; | |
7629 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7630 | ent != NULL; | |
7631 | ent = ent->next) | |
7632 | if (ent->addend == 0) | |
411e1bfb | 7633 | { |
102890f0 | 7634 | if (ent->plt.refcount > 0) |
30038c59 | 7635 | { |
102890f0 AM |
7636 | ent->plt.refcount -= 1; |
7637 | expecting_tls_get_addr = 0; | |
30038c59 | 7638 | } |
102890f0 | 7639 | break; |
411e1bfb | 7640 | } |
102890f0 | 7641 | } |
411e1bfb | 7642 | |
85f7a9cb | 7643 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7644 | { |
7645 | struct plt_entry *ent; | |
7646 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7647 | ent != NULL; | |
7648 | ent = ent->next) | |
7649 | if (ent->addend == 0) | |
411e1bfb | 7650 | { |
102890f0 AM |
7651 | if (ent->plt.refcount > 0) |
7652 | ent->plt.refcount -= 1; | |
7653 | break; | |
411e1bfb | 7654 | } |
102890f0 | 7655 | } |
411e1bfb | 7656 | |
102890f0 | 7657 | if (tls_clear == 0) |
30038c59 AM |
7658 | continue; |
7659 | ||
102890f0 AM |
7660 | if ((tls_set & TLS_EXPLICIT) == 0) |
7661 | { | |
7662 | struct got_entry *ent; | |
411e1bfb | 7663 | |
102890f0 AM |
7664 | /* Adjust got entry for this reloc. */ |
7665 | if (h != NULL) | |
7666 | ent = h->got.glist; | |
7667 | else | |
7668 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7669 | |
102890f0 AM |
7670 | for (; ent != NULL; ent = ent->next) |
7671 | if (ent->addend == rel->r_addend | |
7672 | && ent->owner == ibfd | |
7673 | && ent->tls_type == tls_type) | |
7674 | break; | |
7675 | if (ent == NULL) | |
7676 | abort (); | |
411e1bfb | 7677 | |
102890f0 AM |
7678 | if (tls_set == 0) |
7679 | { | |
7680 | /* We managed to get rid of a got entry. */ | |
7681 | if (ent->got.refcount > 0) | |
7682 | ent->got.refcount -= 1; | |
7683 | } | |
7684 | } | |
7685 | else | |
7686 | { | |
7687 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7688 | we'll lose one or two dyn relocs. */ | |
7689 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7690 | NULL, h, sym_sec)) | |
7691 | return FALSE; | |
411e1bfb | 7692 | |
102890f0 AM |
7693 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7694 | { | |
7695 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7696 | NULL, h, sym_sec)) | |
7697 | return FALSE; | |
7698 | } | |
7699 | } | |
411e1bfb | 7700 | |
102890f0 AM |
7701 | *tls_mask |= tls_set; |
7702 | *tls_mask &= ~tls_clear; | |
7703 | } | |
8c1d1bb8 | 7704 | |
102890f0 AM |
7705 | if (elf_section_data (sec)->relocs != relstart) |
7706 | free (relstart); | |
7707 | } | |
411e1bfb | 7708 | |
727fc41e AM |
7709 | if (toc_ref != NULL) |
7710 | free (toc_ref); | |
411e1bfb | 7711 | |
727fc41e AM |
7712 | if (locsyms != NULL |
7713 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7714 | { | |
7715 | if (!info->keep_memory) | |
7716 | free (locsyms); | |
7717 | else | |
7718 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7719 | } | |
7720 | } | |
b34976b6 | 7721 | return TRUE; |
1e2f5b6e | 7722 | } |
b34976b6 | 7723 | |
c5614fa4 AM |
7724 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7725 | the values of any global symbols in a toc section that has been | |
7726 | edited. Globals in toc sections should be a rarity, so this function | |
7727 | sets a flag if any are found in toc sections other than the one just | |
7728 | edited, so that futher hash table traversals can be avoided. */ | |
7729 | ||
7730 | struct adjust_toc_info | |
7731 | { | |
7732 | asection *toc; | |
7733 | unsigned long *skip; | |
7734 | bfd_boolean global_toc_syms; | |
7735 | }; | |
7736 | ||
7737 | static bfd_boolean | |
7738 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7739 | { | |
7740 | struct ppc_link_hash_entry *eh; | |
7741 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7742 | ||
7743 | if (h->root.type == bfd_link_hash_indirect) | |
7744 | return TRUE; | |
7745 | ||
7746 | if (h->root.type == bfd_link_hash_warning) | |
7747 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7748 | ||
7749 | if (h->root.type != bfd_link_hash_defined | |
7750 | && h->root.type != bfd_link_hash_defweak) | |
7751 | return TRUE; | |
7752 | ||
7753 | eh = (struct ppc_link_hash_entry *) h; | |
7754 | if (eh->adjust_done) | |
7755 | return TRUE; | |
7756 | ||
7757 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7758 | { | |
7759 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7760 | if (skip != (unsigned long) -1) | |
7761 | eh->elf.root.u.def.value -= skip; | |
7762 | else | |
7763 | { | |
7764 | (*_bfd_error_handler) | |
7765 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7766 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7767 | eh->elf.root.u.def.value = 0; | |
7768 | } | |
7769 | eh->adjust_done = 1; | |
7770 | } | |
7771 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7772 | toc_inf->global_toc_syms = TRUE; | |
7773 | ||
7774 | return TRUE; | |
7775 | } | |
7776 | ||
7777 | /* Examine all relocs referencing .toc sections in order to remove | |
7778 | unused .toc entries. */ | |
7779 | ||
7780 | bfd_boolean | |
7781 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7782 | { | |
7783 | bfd *ibfd; | |
7784 | struct adjust_toc_info toc_inf; | |
7785 | ||
7786 | toc_inf.global_toc_syms = TRUE; | |
7787 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7788 | { | |
7789 | asection *toc, *sec; | |
7790 | Elf_Internal_Shdr *symtab_hdr; | |
7791 | Elf_Internal_Sym *local_syms; | |
7792 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7793 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7794 | unsigned long *skip, *drop; |
7795 | unsigned char *used; | |
7796 | unsigned char *keep, last, some_unused; | |
7797 | ||
7798 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7799 | if (toc == NULL | |
92b7a70f | 7800 | || toc->size == 0 |
c5614fa4 AM |
7801 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7802 | || elf_discarded_section (toc)) | |
7803 | continue; | |
7804 | ||
7805 | local_syms = NULL; | |
0ffa91dd | 7806 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7807 | sym_hashes = elf_sym_hashes (ibfd); |
7808 | ||
7809 | /* Look at sections dropped from the final link. */ | |
7810 | skip = NULL; | |
7811 | relstart = NULL; | |
7812 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7813 | { | |
7814 | if (sec->reloc_count == 0 | |
7815 | || !elf_discarded_section (sec) | |
7816 | || get_opd_info (sec) | |
7817 | || (sec->flags & SEC_ALLOC) == 0 | |
7818 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7819 | continue; | |
7820 | ||
7821 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7822 | if (relstart == NULL) | |
7823 | goto error_ret; | |
7824 | ||
7825 | /* Run through the relocs to see which toc entries might be | |
7826 | unused. */ | |
7827 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7828 | { | |
7829 | enum elf_ppc64_reloc_type r_type; | |
7830 | unsigned long r_symndx; | |
7831 | asection *sym_sec; | |
7832 | struct elf_link_hash_entry *h; | |
7833 | Elf_Internal_Sym *sym; | |
7834 | bfd_vma val; | |
7835 | ||
7836 | r_type = ELF64_R_TYPE (rel->r_info); | |
7837 | switch (r_type) | |
7838 | { | |
7839 | default: | |
7840 | continue; | |
7841 | ||
7842 | case R_PPC64_TOC16: | |
7843 | case R_PPC64_TOC16_LO: | |
7844 | case R_PPC64_TOC16_HI: | |
7845 | case R_PPC64_TOC16_HA: | |
7846 | case R_PPC64_TOC16_DS: | |
7847 | case R_PPC64_TOC16_LO_DS: | |
7848 | break; | |
7849 | } | |
7850 | ||
7851 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7852 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7853 | r_symndx, ibfd)) | |
7854 | goto error_ret; | |
7855 | ||
7856 | if (sym_sec != toc) | |
7857 | continue; | |
7858 | ||
7859 | if (h != NULL) | |
7860 | val = h->root.u.def.value; | |
7861 | else | |
7862 | val = sym->st_value; | |
7863 | val += rel->r_addend; | |
7864 | ||
7865 | if (val >= toc->size) | |
7866 | continue; | |
7867 | ||
7868 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7869 | If not, don't mark as unused. */ | |
7870 | if (val & 7) | |
7871 | continue; | |
7872 | ||
7873 | if (skip == NULL) | |
7874 | { | |
7875 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7876 | if (skip == NULL) | |
7877 | goto error_ret; | |
7878 | } | |
7879 | ||
7880 | skip[val >> 3] = 1; | |
7881 | } | |
7882 | ||
7883 | if (elf_section_data (sec)->relocs != relstart) | |
7884 | free (relstart); | |
7885 | } | |
7886 | ||
7887 | if (skip == NULL) | |
7888 | continue; | |
7889 | ||
7890 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7891 | if (used == NULL) | |
7892 | { | |
7893 | error_ret: | |
7894 | if (local_syms != NULL | |
7895 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7896 | free (local_syms); | |
7897 | if (sec != NULL | |
7898 | && relstart != NULL | |
7899 | && elf_section_data (sec)->relocs != relstart) | |
7900 | free (relstart); | |
7901 | if (skip != NULL) | |
7902 | free (skip); | |
7903 | return FALSE; | |
7904 | } | |
7905 | ||
30038c59 AM |
7906 | /* Now check all kept sections that might reference the toc. |
7907 | Check the toc itself last. */ | |
7908 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7909 | : ibfd->sections); | |
c5614fa4 | 7910 | sec != NULL; |
c5614fa4 | 7911 | sec = (sec == toc ? NULL |
c5614fa4 | 7912 | : sec->next == NULL ? toc |
30038c59 | 7913 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7914 | : sec->next)) |
7915 | { | |
7916 | int repeat; | |
7917 | ||
7918 | if (sec->reloc_count == 0 | |
7919 | || elf_discarded_section (sec) | |
7920 | || get_opd_info (sec) | |
7921 | || (sec->flags & SEC_ALLOC) == 0 | |
7922 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7923 | continue; | |
7924 | ||
7925 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7926 | if (relstart == NULL) | |
7927 | goto error_ret; | |
7928 | ||
7929 | /* Mark toc entries referenced as used. */ | |
7930 | repeat = 0; | |
7931 | do | |
7932 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7933 | { | |
7934 | enum elf_ppc64_reloc_type r_type; | |
7935 | unsigned long r_symndx; | |
7936 | asection *sym_sec; | |
7937 | struct elf_link_hash_entry *h; | |
7938 | Elf_Internal_Sym *sym; | |
7939 | bfd_vma val; | |
7940 | ||
7941 | r_type = ELF64_R_TYPE (rel->r_info); | |
7942 | switch (r_type) | |
7943 | { | |
7944 | case R_PPC64_TOC16: | |
7945 | case R_PPC64_TOC16_LO: | |
7946 | case R_PPC64_TOC16_HI: | |
7947 | case R_PPC64_TOC16_HA: | |
7948 | case R_PPC64_TOC16_DS: | |
7949 | case R_PPC64_TOC16_LO_DS: | |
7950 | /* In case we're taking addresses of toc entries. */ | |
7951 | case R_PPC64_ADDR64: | |
7952 | break; | |
7953 | ||
7954 | default: | |
7955 | continue; | |
7956 | } | |
7957 | ||
7958 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7959 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7960 | r_symndx, ibfd)) | |
7961 | { | |
7962 | free (used); | |
7963 | goto error_ret; | |
7964 | } | |
7965 | ||
7966 | if (sym_sec != toc) | |
7967 | continue; | |
7968 | ||
7969 | if (h != NULL) | |
7970 | val = h->root.u.def.value; | |
7971 | else | |
7972 | val = sym->st_value; | |
7973 | val += rel->r_addend; | |
7974 | ||
7975 | if (val >= toc->size) | |
7976 | continue; | |
7977 | ||
7978 | /* For the toc section, we only mark as used if | |
7979 | this entry itself isn't unused. */ | |
7980 | if (sec == toc | |
7981 | && !used[val >> 3] | |
7982 | && (used[rel->r_offset >> 3] | |
7983 | || !skip[rel->r_offset >> 3])) | |
7984 | /* Do all the relocs again, to catch reference | |
7985 | chains. */ | |
7986 | repeat = 1; | |
7987 | ||
7988 | used[val >> 3] = 1; | |
7989 | } | |
7990 | while (repeat); | |
7991 | } | |
7992 | ||
7993 | /* Merge the used and skip arrays. Assume that TOC | |
7994 | doublewords not appearing as either used or unused belong | |
7995 | to to an entry more than one doubleword in size. */ | |
7996 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7997 | drop < skip + (toc->size + 7) / 8; | |
7998 | ++drop, ++keep) | |
7999 | { | |
8000 | if (*keep) | |
8001 | { | |
8002 | *drop = 0; | |
8003 | last = 0; | |
8004 | } | |
8005 | else if (*drop) | |
8006 | { | |
8007 | some_unused = 1; | |
8008 | last = 1; | |
8009 | } | |
8010 | else | |
8011 | *drop = last; | |
8012 | } | |
8013 | ||
8014 | free (used); | |
8015 | ||
8016 | if (some_unused) | |
8017 | { | |
8018 | bfd_byte *contents, *src; | |
8019 | unsigned long off; | |
8020 | ||
8021 | /* Shuffle the toc contents, and at the same time convert the | |
8022 | skip array from booleans into offsets. */ | |
8023 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8024 | goto error_ret; | |
8025 | ||
8026 | elf_section_data (toc)->this_hdr.contents = contents; | |
8027 | ||
8028 | for (src = contents, off = 0, drop = skip; | |
8029 | src < contents + toc->size; | |
8030 | src += 8, ++drop) | |
8031 | { | |
8032 | if (*drop) | |
8033 | { | |
8034 | *drop = (unsigned long) -1; | |
8035 | off += 8; | |
8036 | } | |
8037 | else if (off != 0) | |
8038 | { | |
8039 | *drop = off; | |
8040 | memcpy (src - off, src, 8); | |
8041 | } | |
8042 | } | |
8043 | toc->rawsize = toc->size; | |
8044 | toc->size = src - contents - off; | |
8045 | ||
92b7a70f AM |
8046 | if (toc->reloc_count != 0) |
8047 | { | |
8048 | Elf_Internal_Rela *wrel; | |
8049 | bfd_size_type sz; | |
c5614fa4 | 8050 | |
92b7a70f AM |
8051 | /* Read toc relocs. */ |
8052 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8053 | TRUE); | |
8054 | if (relstart == NULL) | |
8055 | goto error_ret; | |
8056 | ||
8057 | /* Remove unused toc relocs, and adjust those we keep. */ | |
8058 | wrel = relstart; | |
8059 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
8060 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
8061 | { | |
8062 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8063 | wrel->r_info = rel->r_info; | |
8064 | wrel->r_addend = rel->r_addend; | |
8065 | ++wrel; | |
8066 | } | |
8c1d1bb8 AM |
8067 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
8068 | &local_syms, NULL, NULL)) | |
8069 | goto error_ret; | |
35090471 | 8070 | |
92b7a70f AM |
8071 | toc->reloc_count = wrel - relstart; |
8072 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
8073 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
8074 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
8075 | } | |
c5614fa4 AM |
8076 | |
8077 | /* Adjust addends for relocs against the toc section sym. */ | |
8078 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8079 | { | |
8080 | if (sec->reloc_count == 0 | |
8081 | || elf_discarded_section (sec)) | |
8082 | continue; | |
8083 | ||
8084 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8085 | TRUE); | |
8086 | if (relstart == NULL) | |
8087 | goto error_ret; | |
8088 | ||
8089 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8090 | { | |
8091 | enum elf_ppc64_reloc_type r_type; | |
8092 | unsigned long r_symndx; | |
8093 | asection *sym_sec; | |
8094 | struct elf_link_hash_entry *h; | |
8095 | Elf_Internal_Sym *sym; | |
8096 | ||
8097 | r_type = ELF64_R_TYPE (rel->r_info); | |
8098 | switch (r_type) | |
8099 | { | |
8100 | default: | |
8101 | continue; | |
8102 | ||
8103 | case R_PPC64_TOC16: | |
8104 | case R_PPC64_TOC16_LO: | |
8105 | case R_PPC64_TOC16_HI: | |
8106 | case R_PPC64_TOC16_HA: | |
8107 | case R_PPC64_TOC16_DS: | |
8108 | case R_PPC64_TOC16_LO_DS: | |
8109 | case R_PPC64_ADDR64: | |
8110 | break; | |
8111 | } | |
8112 | ||
8113 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8114 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8115 | r_symndx, ibfd)) | |
8116 | goto error_ret; | |
8117 | ||
8118 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
8119 | continue; | |
8120 | ||
8121 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
8122 | } | |
8123 | } | |
8124 | ||
8125 | /* We shouldn't have local or global symbols defined in the TOC, | |
8126 | but handle them anyway. */ | |
8127 | if (local_syms != NULL) | |
8128 | { | |
8129 | Elf_Internal_Sym *sym; | |
8130 | ||
8131 | for (sym = local_syms; | |
8132 | sym < local_syms + symtab_hdr->sh_info; | |
8133 | ++sym) | |
cb33740c | 8134 | if (sym->st_value != 0 |
c5614fa4 AM |
8135 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
8136 | { | |
8137 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
8138 | sym->st_value -= skip[sym->st_value >> 3]; | |
8139 | else | |
8140 | { | |
8141 | (*_bfd_error_handler) | |
8142 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
8143 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
8144 | NULL)); | |
c5614fa4 AM |
8145 | sym->st_value = 0; |
8146 | sym->st_shndx = SHN_ABS; | |
8147 | } | |
8148 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8149 | } | |
8150 | } | |
8151 | ||
8152 | /* Finally, adjust any global syms defined in the toc. */ | |
8153 | if (toc_inf.global_toc_syms) | |
8154 | { | |
8155 | toc_inf.toc = toc; | |
8156 | toc_inf.skip = skip; | |
8157 | toc_inf.global_toc_syms = FALSE; | |
8158 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8159 | &toc_inf); | |
8160 | } | |
8161 | } | |
8162 | ||
8163 | if (local_syms != NULL | |
8164 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8165 | { | |
8166 | if (!info->keep_memory) | |
8167 | free (local_syms); | |
8168 | else | |
8169 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8170 | } | |
8171 | free (skip); | |
8172 | } | |
8173 | ||
8174 | return TRUE; | |
8175 | } | |
8176 | ||
65f38f15 AM |
8177 | /* Allocate space in .plt, .got and associated reloc sections for |
8178 | dynamic relocs. */ | |
5bd4f169 | 8179 | |
b34976b6 | 8180 | static bfd_boolean |
4ce794b7 | 8181 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8182 | { |
65f38f15 AM |
8183 | struct bfd_link_info *info; |
8184 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8185 | asection *s; |
65f38f15 AM |
8186 | struct ppc_link_hash_entry *eh; |
8187 | struct ppc_dyn_relocs *p; | |
411e1bfb | 8188 | struct got_entry *gent; |
5bd4f169 | 8189 | |
e92d460e | 8190 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8191 | return TRUE; |
5bd4f169 | 8192 | |
e92d460e AM |
8193 | if (h->root.type == bfd_link_hash_warning) |
8194 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8195 | ||
65f38f15 AM |
8196 | info = (struct bfd_link_info *) inf; |
8197 | htab = ppc_hash_table (info); | |
5bd4f169 | 8198 | |
e054468f AM |
8199 | if ((htab->elf.dynamic_sections_created |
8200 | && h->dynindx != -1 | |
8201 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8202 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8203 | { |
411e1bfb AM |
8204 | struct plt_entry *pent; |
8205 | bfd_boolean doneone = FALSE; | |
8206 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8207 | if (pent->plt.refcount > 0) | |
8208 | { | |
25f23106 AM |
8209 | if (!htab->elf.dynamic_sections_created |
8210 | || h->dynindx == -1) | |
e054468f AM |
8211 | { |
8212 | s = htab->iplt; | |
8213 | pent->plt.offset = s->size; | |
8214 | s->size += PLT_ENTRY_SIZE; | |
8215 | s = htab->reliplt; | |
8216 | } | |
8217 | else | |
8218 | { | |
8219 | /* If this is the first .plt entry, make room for the special | |
8220 | first entry. */ | |
8221 | s = htab->plt; | |
8222 | if (s->size == 0) | |
8223 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8224 | ||
8225 | pent->plt.offset = s->size; | |
8226 | ||
8227 | /* Make room for this entry. */ | |
8228 | s->size += PLT_ENTRY_SIZE; | |
8229 | ||
8230 | /* Make room for the .glink code. */ | |
8231 | s = htab->glink; | |
8232 | if (s->size == 0) | |
8233 | s->size += GLINK_CALL_STUB_SIZE; | |
8234 | /* We need bigger stubs past index 32767. */ | |
8235 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8236 | s->size += 4; | |
8237 | s->size += 2*4; | |
8238 | ||
8239 | /* We also need to make an entry in the .rela.plt section. */ | |
8240 | s = htab->relplt; | |
8241 | } | |
eea6121a | 8242 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8243 | doneone = TRUE; |
8244 | } | |
8245 | else | |
8246 | pent->plt.offset = (bfd_vma) -1; | |
8247 | if (!doneone) | |
65f38f15 | 8248 | { |
411e1bfb | 8249 | h->plt.plist = NULL; |
f5385ebf | 8250 | h->needs_plt = 0; |
65f38f15 AM |
8251 | } |
8252 | } | |
8253 | else | |
8254 | { | |
411e1bfb | 8255 | h->plt.plist = NULL; |
f5385ebf | 8256 | h->needs_plt = 0; |
65f38f15 AM |
8257 | } |
8258 | ||
951fd09b AM |
8259 | eh = (struct ppc_link_hash_entry *) h; |
8260 | /* Run through the TLS GD got entries first if we're changing them | |
8261 | to TPREL. */ | |
e7b938ca | 8262 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
8263 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8264 | if (gent->got.refcount > 0 | |
8265 | && (gent->tls_type & TLS_GD) != 0) | |
8266 | { | |
8267 | /* This was a GD entry that has been converted to TPREL. If | |
8268 | there happens to be a TPREL entry we can use that one. */ | |
8269 | struct got_entry *ent; | |
8270 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8271 | if (ent->got.refcount > 0 | |
8272 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8273 | && ent->addend == gent->addend |
8274 | && ent->owner == gent->owner) | |
951fd09b AM |
8275 | { |
8276 | gent->got.refcount = 0; | |
8277 | break; | |
8278 | } | |
8279 | ||
8280 | /* If not, then we'll be using our own TPREL entry. */ | |
8281 | if (gent->got.refcount != 0) | |
8282 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8283 | } | |
8284 | ||
411e1bfb AM |
8285 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8286 | if (gent->got.refcount > 0) | |
8287 | { | |
951fd09b | 8288 | bfd_boolean dyn; |
25f23106 | 8289 | asection *rsec; |
951fd09b | 8290 | |
411e1bfb | 8291 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
8292 | Undefined weak syms won't yet be marked as dynamic, |
8293 | nor will all TLS symbols. */ | |
411e1bfb | 8294 | if (h->dynindx == -1 |
b099ab9f | 8295 | && !h->forced_local |
25f23106 | 8296 | && h->type != STT_GNU_IFUNC |
b099ab9f | 8297 | && htab->elf.dynamic_sections_created) |
411e1bfb | 8298 | { |
c152c796 | 8299 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
8300 | return FALSE; |
8301 | } | |
65f38f15 | 8302 | |
d881513a | 8303 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 8304 | && !h->def_dynamic) |
411e1bfb | 8305 | { |
102890f0 AM |
8306 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
8307 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 8308 | continue; |
411e1bfb | 8309 | } |
951fd09b | 8310 | |
0c8d6e5c | 8311 | if (!is_ppc64_elf (gent->owner)) |
0ffa91dd NC |
8312 | continue; |
8313 | ||
e717da7e | 8314 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
8315 | gent->got.offset = s->size; |
8316 | s->size | |
d881513a | 8317 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 8318 | dyn = htab->elf.dynamic_sections_created; |
25f23106 | 8319 | rsec = NULL; |
4e795f50 AM |
8320 | if ((info->shared |
8321 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8322 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8323 | || h->root.type != bfd_link_hash_undefweak)) | |
25f23106 AM |
8324 | rsec = ppc64_elf_tdata (gent->owner)->relgot; |
8325 | else if (h->type == STT_GNU_IFUNC) | |
8326 | rsec = htab->reliplt; | |
8327 | if (rsec != NULL) | |
8328 | rsec->size += (gent->tls_type & eh->tls_mask & TLS_GD | |
8329 | ? 2 * sizeof (Elf64_External_Rela) | |
8330 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
8331 | } |
8332 | else | |
8333 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 8334 | |
b099ab9f | 8335 | if (eh->dyn_relocs == NULL |
25f23106 AM |
8336 | || (!htab->elf.dynamic_sections_created |
8337 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 8338 | return TRUE; |
65f38f15 AM |
8339 | |
8340 | /* In the shared -Bsymbolic case, discard space allocated for | |
8341 | dynamic pc-relative relocs against symbols which turn out to be | |
8342 | defined in regular objects. For the normal shared case, discard | |
8343 | space for relocs that have become local due to symbol visibility | |
8344 | changes. */ | |
8345 | ||
8346 | if (info->shared) | |
8347 | { | |
9c7a29a3 | 8348 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 8349 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
8350 | generated via assembly. We want calls to protected symbols to |
8351 | resolve directly to the function rather than going via the plt. | |
8352 | If people want function pointer comparisons to work as expected | |
8353 | then they should avoid writing weird assembly. */ | |
09695f56 | 8354 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
8355 | { |
8356 | struct ppc_dyn_relocs **pp; | |
8357 | ||
8358 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 8359 | { |
65f38f15 AM |
8360 | p->count -= p->pc_count; |
8361 | p->pc_count = 0; | |
8362 | if (p->count == 0) | |
8363 | *pp = p->next; | |
8364 | else | |
8365 | pp = &p->next; | |
5bd4f169 | 8366 | } |
65f38f15 | 8367 | } |
4e795f50 AM |
8368 | |
8369 | /* Also discard relocs on undefined weak syms with non-default | |
8370 | visibility. */ | |
cab87ef9 AM |
8371 | if (eh->dyn_relocs != NULL |
8372 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
8373 | { |
8374 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8375 | eh->dyn_relocs = NULL; | |
8376 | ||
8377 | /* Make sure this symbol is output as a dynamic symbol. | |
8378 | Undefined weak syms won't yet be marked as dynamic. */ | |
8379 | else if (h->dynindx == -1 | |
8380 | && !h->forced_local) | |
8381 | { | |
8382 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8383 | return FALSE; | |
8384 | } | |
8385 | } | |
65f38f15 | 8386 | } |
25f23106 AM |
8387 | else if (h->type == STT_GNU_IFUNC) |
8388 | { | |
8389 | if (!h->non_got_ref) | |
8390 | eh->dyn_relocs = NULL; | |
8391 | } | |
f4656909 | 8392 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8393 | { |
8394 | /* For the non-shared case, discard space for relocs against | |
8395 | symbols which turn out to need copy relocs or are not | |
8396 | dynamic. */ | |
8397 | ||
f5385ebf | 8398 | if (!h->non_got_ref |
f5385ebf | 8399 | && !h->def_regular) |
65f38f15 AM |
8400 | { |
8401 | /* Make sure this symbol is output as a dynamic symbol. | |
8402 | Undefined weak syms won't yet be marked as dynamic. */ | |
8403 | if (h->dynindx == -1 | |
f5385ebf | 8404 | && !h->forced_local) |
65f38f15 | 8405 | { |
c152c796 | 8406 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8407 | return FALSE; |
65f38f15 AM |
8408 | } |
8409 | ||
8410 | /* If that succeeded, we know we'll be keeping all the | |
8411 | relocs. */ | |
8412 | if (h->dynindx != -1) | |
8413 | goto keep; | |
8414 | } | |
8415 | ||
8416 | eh->dyn_relocs = NULL; | |
8417 | ||
ec338859 | 8418 | keep: ; |
65f38f15 AM |
8419 | } |
8420 | ||
8421 | /* Finally, allocate space. */ | |
8422 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8423 | { | |
8424 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8425 | if (!htab->elf.dynamic_sections_created) |
8426 | sreloc = htab->reliplt; | |
eea6121a | 8427 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8428 | } |
8429 | ||
b34976b6 | 8430 | return TRUE; |
65f38f15 AM |
8431 | } |
8432 | ||
8433 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8434 | ||
b34976b6 | 8435 | static bfd_boolean |
4ce794b7 | 8436 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8437 | { |
8438 | struct ppc_link_hash_entry *eh; | |
8439 | struct ppc_dyn_relocs *p; | |
8440 | ||
e92d460e AM |
8441 | if (h->root.type == bfd_link_hash_warning) |
8442 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8443 | ||
65f38f15 AM |
8444 | eh = (struct ppc_link_hash_entry *) h; |
8445 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8446 | { | |
8447 | asection *s = p->sec->output_section; | |
8448 | ||
8449 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8450 | { | |
4ce794b7 | 8451 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8452 | |
8453 | info->flags |= DF_TEXTREL; | |
8454 | ||
8455 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8456 | return FALSE; |
65f38f15 AM |
8457 | } |
8458 | } | |
b34976b6 | 8459 | return TRUE; |
65f38f15 AM |
8460 | } |
8461 | ||
8462 | /* Set the sizes of the dynamic sections. */ | |
8463 | ||
b34976b6 | 8464 | static bfd_boolean |
4ce794b7 AM |
8465 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8466 | struct bfd_link_info *info) | |
65f38f15 AM |
8467 | { |
8468 | struct ppc_link_hash_table *htab; | |
8469 | bfd *dynobj; | |
8470 | asection *s; | |
b34976b6 | 8471 | bfd_boolean relocs; |
65f38f15 AM |
8472 | bfd *ibfd; |
8473 | ||
8474 | htab = ppc_hash_table (info); | |
8475 | dynobj = htab->elf.dynobj; | |
8476 | if (dynobj == NULL) | |
8477 | abort (); | |
8478 | ||
8479 | if (htab->elf.dynamic_sections_created) | |
8480 | { | |
8481 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8482 | if (info->executable) |
65f38f15 AM |
8483 | { |
8484 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8485 | if (s == NULL) | |
8486 | abort (); | |
eea6121a | 8487 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8488 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8489 | } | |
8490 | } | |
8491 | ||
8492 | /* Set up .got offsets for local syms, and space for local dynamic | |
8493 | relocs. */ | |
8494 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8495 | { | |
411e1bfb AM |
8496 | struct got_entry **lgot_ents; |
8497 | struct got_entry **end_lgot_ents; | |
e054468f AM |
8498 | struct plt_entry **local_plt; |
8499 | struct plt_entry **end_local_plt; | |
e7b938ca | 8500 | char *lgot_masks; |
65f38f15 AM |
8501 | bfd_size_type locsymcount; |
8502 | Elf_Internal_Shdr *symtab_hdr; | |
8503 | asection *srel; | |
8504 | ||
0c8d6e5c | 8505 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8506 | continue; |
8507 | ||
8508 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8509 | { | |
ec338859 | 8510 | struct ppc_dyn_relocs *p; |
65f38f15 | 8511 | |
6edfbbad | 8512 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8513 | { |
ec338859 AM |
8514 | if (!bfd_is_abs_section (p->sec) |
8515 | && bfd_is_abs_section (p->sec->output_section)) | |
8516 | { | |
8517 | /* Input section has been discarded, either because | |
8518 | it is a copy of a linkonce section or due to | |
8519 | linker script /DISCARD/, so we'll be discarding | |
8520 | the relocs too. */ | |
8521 | } | |
248866a8 | 8522 | else if (p->count != 0) |
ec338859 AM |
8523 | { |
8524 | srel = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8525 | if (!htab->elf.dynamic_sections_created) |
8526 | srel = htab->reliplt; | |
eea6121a | 8527 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8528 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8529 | info->flags |= DF_TEXTREL; | |
ec338859 | 8530 | } |
65f38f15 AM |
8531 | } |
8532 | } | |
8533 | ||
411e1bfb AM |
8534 | lgot_ents = elf_local_got_ents (ibfd); |
8535 | if (!lgot_ents) | |
65f38f15 AM |
8536 | continue; |
8537 | ||
0ffa91dd | 8538 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8539 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8540 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
8541 | local_plt = (struct plt_entry **) end_lgot_ents; |
8542 | end_local_plt = local_plt + locsymcount; | |
8543 | lgot_masks = (char *) end_local_plt; | |
e717da7e AM |
8544 | s = ppc64_elf_tdata (ibfd)->got; |
8545 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8546 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8547 | { |
411e1bfb AM |
8548 | struct got_entry *ent; |
8549 | ||
8550 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
8551 | if (ent->got.refcount > 0) | |
8552 | { | |
e7b938ca | 8553 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8554 | { |
102890f0 AM |
8555 | ppc64_tlsld_got (ibfd)->refcount += 1; |
8556 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
8557 | } |
8558 | else | |
8559 | { | |
25f23106 | 8560 | unsigned int num = 1; |
eea6121a | 8561 | ent->got.offset = s->size; |
e7b938ca | 8562 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
25f23106 AM |
8563 | num = 2; |
8564 | s->size += num * 8; | |
8565 | if (info->shared) | |
8566 | srel->size += num * sizeof (Elf64_External_Rela); | |
8567 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
8568 | htab->reliplt->size += num * sizeof (Elf64_External_Rela); | |
411e1bfb AM |
8569 | } |
8570 | } | |
8571 | else | |
8572 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 | 8573 | } |
e054468f AM |
8574 | |
8575 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
8576 | for (; local_plt < end_local_plt; ++local_plt) | |
8577 | { | |
8578 | struct plt_entry *ent; | |
8579 | ||
8580 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
8581 | if (ent->plt.refcount > 0) | |
8582 | { | |
91d6fa6a | 8583 | s = htab->iplt; |
e054468f AM |
8584 | ent->plt.offset = s->size; |
8585 | s->size += PLT_ENTRY_SIZE; | |
8586 | ||
25f23106 | 8587 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
8588 | } |
8589 | else | |
8590 | ent->plt.offset = (bfd_vma) -1; | |
8591 | } | |
65f38f15 AM |
8592 | } |
8593 | ||
8594 | /* Allocate global sym .plt and .got entries, and space for global | |
8595 | sym dynamic relocs. */ | |
4ce794b7 | 8596 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8597 | |
102890f0 AM |
8598 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8599 | { | |
0c8d6e5c | 8600 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8601 | continue; |
8602 | ||
8603 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8604 | { | |
8605 | s = ppc64_elf_tdata (ibfd)->got; | |
8606 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8607 | s->size += 16; | |
8608 | if (info->shared) | |
8609 | { | |
8610 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8611 | srel->size += sizeof (Elf64_External_Rela); | |
8612 | } | |
8613 | } | |
8614 | else | |
8615 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8616 | } | |
8617 | ||
65f38f15 AM |
8618 | /* We now have determined the sizes of the various dynamic sections. |
8619 | Allocate memory for them. */ | |
b34976b6 | 8620 | relocs = FALSE; |
65f38f15 AM |
8621 | for (s = dynobj->sections; s != NULL; s = s->next) |
8622 | { | |
8623 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8624 | continue; | |
8625 | ||
4ce794b7 | 8626 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8627 | /* These haven't been allocated yet; don't strip. */ |
8628 | continue; | |
e717da7e AM |
8629 | else if (s == htab->got |
8630 | || s == htab->plt | |
e054468f | 8631 | || s == htab->iplt |
c456f082 AM |
8632 | || s == htab->glink |
8633 | || s == htab->dynbss) | |
65f38f15 AM |
8634 | { |
8635 | /* Strip this section if we don't need it; see the | |
8636 | comment below. */ | |
5bd4f169 | 8637 | } |
0112cd26 | 8638 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8639 | { |
c456f082 | 8640 | if (s->size != 0) |
5bd4f169 | 8641 | { |
4ce794b7 | 8642 | if (s != htab->relplt) |
b34976b6 | 8643 | relocs = TRUE; |
5bd4f169 AM |
8644 | |
8645 | /* We use the reloc_count field as a counter if we need | |
8646 | to copy relocs into the output file. */ | |
8647 | s->reloc_count = 0; | |
8648 | } | |
8649 | } | |
65f38f15 | 8650 | else |
5bd4f169 AM |
8651 | { |
8652 | /* It's not one of our sections, so don't allocate space. */ | |
8653 | continue; | |
8654 | } | |
8655 | ||
eea6121a | 8656 | if (s->size == 0) |
5bd4f169 | 8657 | { |
c456f082 AM |
8658 | /* If we don't need this section, strip it from the |
8659 | output file. This is mostly to handle .rela.bss and | |
8660 | .rela.plt. We must create both sections in | |
8661 | create_dynamic_sections, because they must be created | |
8662 | before the linker maps input sections to output | |
8663 | sections. The linker does that before | |
8664 | adjust_dynamic_symbol is called, and it is that | |
8665 | function which decides whether anything needs to go | |
8666 | into these sections. */ | |
8423293d | 8667 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8668 | continue; |
8669 | } | |
8670 | ||
c456f082 | 8671 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8672 | continue; |
8673 | ||
65f38f15 AM |
8674 | /* Allocate memory for the section contents. We use bfd_zalloc |
8675 | here in case unused entries are not reclaimed before the | |
8676 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8677 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8678 | sections instead of garbage. | |
8679 | We also rely on the section contents being zero when writing | |
8680 | the GOT. */ | |
eea6121a | 8681 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8682 | if (s->contents == NULL) |
b34976b6 | 8683 | return FALSE; |
5bd4f169 AM |
8684 | } |
8685 | ||
e717da7e AM |
8686 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8687 | { | |
0c8d6e5c | 8688 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
8689 | continue; |
8690 | ||
e717da7e AM |
8691 | s = ppc64_elf_tdata (ibfd)->got; |
8692 | if (s != NULL && s != htab->got) | |
8693 | { | |
eea6121a | 8694 | if (s->size == 0) |
8423293d | 8695 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8696 | else |
8697 | { | |
eea6121a | 8698 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8699 | if (s->contents == NULL) |
8700 | return FALSE; | |
8701 | } | |
8702 | } | |
8703 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8704 | if (s != NULL) | |
8705 | { | |
eea6121a | 8706 | if (s->size == 0) |
8423293d | 8707 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8708 | else |
8709 | { | |
eea6121a | 8710 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8711 | if (s->contents == NULL) |
8712 | return FALSE; | |
8713 | relocs = TRUE; | |
8714 | s->reloc_count = 0; | |
8715 | } | |
8716 | } | |
8717 | } | |
8718 | ||
e86ce104 | 8719 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8720 | { |
8721 | /* Add some entries to the .dynamic section. We fill in the | |
8722 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8723 | must add the entries now so that we get the correct size for | |
8724 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8725 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8726 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8727 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8728 | |
36af4a4e | 8729 | if (info->executable) |
5bd4f169 | 8730 | { |
dc810e39 | 8731 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8732 | return FALSE; |
5bd4f169 AM |
8733 | } |
8734 | ||
eea6121a | 8735 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8736 | { |
dc810e39 AM |
8737 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8738 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8739 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8740 | || !add_dynamic_entry (DT_JMPREL, 0) |
8741 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8742 | return FALSE; |
5bd4f169 AM |
8743 | } |
8744 | ||
19397422 AM |
8745 | if (NO_OPD_RELOCS) |
8746 | { | |
8747 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8748 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8749 | return FALSE; |
19397422 AM |
8750 | } |
8751 | ||
a7f2871e AM |
8752 | if (!htab->no_tls_get_addr_opt |
8753 | && htab->tls_get_addr_fd != NULL | |
8754 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
8755 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
8756 | return FALSE; | |
8757 | ||
5bd4f169 AM |
8758 | if (relocs) |
8759 | { | |
dc810e39 AM |
8760 | if (!add_dynamic_entry (DT_RELA, 0) |
8761 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8762 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8763 | return FALSE; |
5bd4f169 | 8764 | |
65f38f15 AM |
8765 | /* If any dynamic relocs apply to a read-only section, |
8766 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8767 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8768 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8769 | |
65f38f15 | 8770 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8771 | { |
65f38f15 | 8772 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8773 | return FALSE; |
5bd4f169 | 8774 | } |
5bd4f169 | 8775 | } |
5bd4f169 | 8776 | } |
65f38f15 | 8777 | #undef add_dynamic_entry |
5bd4f169 | 8778 | |
b34976b6 | 8779 | return TRUE; |
5bd4f169 AM |
8780 | } |
8781 | ||
721956f4 | 8782 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8783 | |
4ce794b7 AM |
8784 | static inline enum ppc_stub_type |
8785 | ppc_type_of_stub (asection *input_sec, | |
8786 | const Elf_Internal_Rela *rel, | |
8787 | struct ppc_link_hash_entry **hash, | |
e054468f | 8788 | struct plt_entry **plt_ent, |
4ce794b7 | 8789 | bfd_vma destination) |
5bd4f169 | 8790 | { |
721956f4 AM |
8791 | struct ppc_link_hash_entry *h = *hash; |
8792 | bfd_vma location; | |
8793 | bfd_vma branch_offset; | |
8794 | bfd_vma max_branch_offset; | |
4ce794b7 | 8795 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8796 | |
721956f4 AM |
8797 | if (h != NULL) |
8798 | { | |
e054468f | 8799 | struct plt_entry *ent; |
7fe2b9a6 | 8800 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
8801 | if (h->oh != NULL |
8802 | && h->oh->is_func_descriptor) | |
8803 | fdh = ppc_follow_link (h->oh); | |
8387904d | 8804 | |
e054468f AM |
8805 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
8806 | if (ent->addend == rel->r_addend | |
8807 | && ent->plt.offset != (bfd_vma) -1) | |
8808 | { | |
8809 | *hash = fdh; | |
8810 | *plt_ent = ent; | |
8811 | return ppc_stub_plt_call; | |
8812 | } | |
5bd4f169 | 8813 | |
7fe2b9a6 AM |
8814 | /* Here, we know we don't have a plt entry. If we don't have a |
8815 | either a defined function descriptor or a defined entry symbol | |
8816 | in a regular object file, then it is pointless trying to make | |
8817 | any other type of stub. */ | |
8818 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8819 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8820 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8821 | && !((h->elf.root.type == bfd_link_hash_defined | |
8822 | || h->elf.root.type == bfd_link_hash_defweak) | |
8823 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8824 | return ppc_stub_none; |
5d1634d7 | 8825 | } |
e054468f AM |
8826 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
8827 | { | |
8828 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
8829 | struct plt_entry **local_plt = (struct plt_entry **) | |
8830 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
8831 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
8832 | ||
8833 | if (local_plt[r_symndx] != NULL) | |
8834 | { | |
8835 | struct plt_entry *ent; | |
8836 | ||
8837 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
8838 | if (ent->addend == rel->r_addend | |
8839 | && ent->plt.offset != (bfd_vma) -1) | |
8840 | { | |
8841 | *plt_ent = ent; | |
8842 | return ppc_stub_plt_call; | |
8843 | } | |
8844 | } | |
8845 | } | |
5d1634d7 | 8846 | |
721956f4 AM |
8847 | /* Determine where the call point is. */ |
8848 | location = (input_sec->output_offset | |
8849 | + input_sec->output_section->vma | |
8850 | + rel->r_offset); | |
5d1634d7 | 8851 | |
721956f4 AM |
8852 | branch_offset = destination - location; |
8853 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8854 | |
721956f4 AM |
8855 | /* Determine if a long branch stub is needed. */ |
8856 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8857 | if (r_type != R_PPC64_REL24) |
721956f4 | 8858 | max_branch_offset = 1 << 15; |
5d1634d7 | 8859 | |
721956f4 AM |
8860 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8861 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8862 | is needed later. */ | |
8863 | return ppc_stub_long_branch; | |
5d1634d7 | 8864 | |
721956f4 | 8865 | return ppc_stub_none; |
5d1634d7 AM |
8866 | } |
8867 | ||
8868 | /* Build a .plt call stub. */ | |
8869 | ||
4ce794b7 | 8870 | static inline bfd_byte * |
176a0d42 | 8871 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
8872 | { |
8873 | #define PPC_LO(v) ((v) & 0xffff) | |
8874 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8875 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8876 | ||
ac2df442 AM |
8877 | if (PPC_HA (offset) != 0) |
8878 | { | |
176a0d42 AM |
8879 | if (r != NULL) |
8880 | { | |
8881 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8882 | r[1].r_offset = r[0].r_offset + 8; | |
8883 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8884 | r[1].r_addend = r[0].r_addend; | |
8885 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8886 | { | |
8887 | r[2].r_offset = r[1].r_offset + 4; | |
8888 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
8889 | r[2].r_addend = r[0].r_addend; | |
8890 | } | |
8891 | else | |
8892 | { | |
8893 | r[2].r_offset = r[1].r_offset + 8; | |
8894 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8895 | r[2].r_addend = r[0].r_addend + 8; | |
8896 | r[3].r_offset = r[2].r_offset + 4; | |
8897 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8898 | r[3].r_addend = r[0].r_addend + 16; | |
8899 | } | |
8900 | } | |
ac2df442 AM |
8901 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
8902 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8903 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8904 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8905 | { | |
8906 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8907 | offset = 0; | |
8908 | } | |
8909 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8910 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8911 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8912 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8913 | } | |
8914 | else | |
8915 | { | |
176a0d42 AM |
8916 | if (r != NULL) |
8917 | { | |
8918 | r[0].r_offset += 4; | |
8919 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8920 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8921 | { | |
8922 | r[1].r_offset = r[0].r_offset + 4; | |
8923 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
8924 | r[1].r_addend = r[0].r_addend; | |
8925 | } | |
8926 | else | |
8927 | { | |
8928 | r[1].r_offset = r[0].r_offset + 8; | |
8929 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8930 | r[1].r_addend = r[0].r_addend + 16; | |
8931 | r[2].r_offset = r[1].r_offset + 4; | |
8932 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8933 | r[2].r_addend = r[0].r_addend + 8; | |
8934 | } | |
8935 | } | |
ac2df442 AM |
8936 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
8937 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8938 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8939 | { | |
8940 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8941 | offset = 0; | |
8942 | } | |
8943 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8944 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8945 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8946 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8947 | } | |
5d1634d7 AM |
8948 | return p; |
8949 | } | |
8950 | ||
a7f2871e AM |
8951 | /* Build a special .plt call stub for __tls_get_addr. */ |
8952 | ||
8953 | #define LD_R11_0R3 0xe9630000 | |
8954 | #define LD_R12_0R3 0xe9830000 | |
8955 | #define MR_R0_R3 0x7c601b78 | |
8956 | #define CMPDI_R11_0 0x2c2b0000 | |
8957 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
8958 | #define BEQLR 0x4d820020 | |
8959 | #define MR_R3_R0 0x7c030378 | |
8960 | #define MFLR_R11 0x7d6802a6 | |
8961 | #define STD_R11_0R1 0xf9610000 | |
8962 | #define BCTRL 0x4e800421 | |
8963 | #define LD_R11_0R1 0xe9610000 | |
8964 | #define LD_R2_0R1 0xe8410000 | |
8965 | #define MTLR_R11 0x7d6803a6 | |
8966 | ||
8967 | static inline bfd_byte * | |
8968 | build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset, | |
8969 | Elf_Internal_Rela *r) | |
8970 | { | |
8971 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; | |
8972 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
8973 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
8974 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
8975 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
8976 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
8977 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
8978 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
8979 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
8980 | ||
8981 | if (r != NULL) | |
8982 | r[0].r_offset += 9 * 4; | |
8983 | p = build_plt_stub (obfd, p, offset, r); | |
8984 | bfd_put_32 (obfd, BCTRL, p - 4); | |
8985 | ||
8986 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
8987 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
8988 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
8989 | bfd_put_32 (obfd, BLR, p), p += 4; | |
8990 | ||
8991 | return p; | |
8992 | } | |
8993 | ||
176a0d42 AM |
8994 | static Elf_Internal_Rela * |
8995 | get_relocs (asection *sec, int count) | |
8996 | { | |
8997 | Elf_Internal_Rela *relocs; | |
8998 | struct bfd_elf_section_data *elfsec_data; | |
8999 | ||
9000 | elfsec_data = elf_section_data (sec); | |
9001 | relocs = elfsec_data->relocs; | |
9002 | if (relocs == NULL) | |
9003 | { | |
9004 | bfd_size_type relsize; | |
9005 | relsize = sec->reloc_count * sizeof (*relocs); | |
9006 | relocs = bfd_alloc (sec->owner, relsize); | |
9007 | if (relocs == NULL) | |
9008 | return NULL; | |
9009 | elfsec_data->relocs = relocs; | |
9010 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
9011 | * sizeof (Elf64_External_Rela)); | |
9012 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
9013 | sec->reloc_count = 0; | |
9014 | } | |
9015 | relocs += sec->reloc_count; | |
9016 | sec->reloc_count += count; | |
9017 | return relocs; | |
9018 | } | |
9019 | ||
b34976b6 | 9020 | static bfd_boolean |
4ce794b7 | 9021 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9022 | { |
721956f4 AM |
9023 | struct ppc_stub_hash_entry *stub_entry; |
9024 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9025 | struct bfd_link_info *info; |
9026 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9027 | bfd_byte *loc; |
9028 | bfd_byte *p; | |
ee75fd95 | 9029 | bfd_vma dest, off; |
721956f4 | 9030 | int size; |
176a0d42 | 9031 | Elf_Internal_Rela *r; |
e054468f | 9032 | asection *plt; |
5d1634d7 | 9033 | |
721956f4 AM |
9034 | /* Massage our args to the form they really have. */ |
9035 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 9036 | info = in_arg; |
5d1634d7 | 9037 | |
5d1634d7 AM |
9038 | htab = ppc_hash_table (info); |
9039 | ||
721956f4 | 9040 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 9041 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 9042 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 9043 | |
4ce794b7 | 9044 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 9045 | switch (stub_entry->stub_type) |
5d1634d7 | 9046 | { |
721956f4 | 9047 | case ppc_stub_long_branch: |
ad8e1ba5 | 9048 | case ppc_stub_long_branch_r2off: |
721956f4 | 9049 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
9050 | off = dest = (stub_entry->target_value |
9051 | + stub_entry->target_section->output_offset | |
9052 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 9053 | |
721956f4 AM |
9054 | /* And this is where we are coming from. */ |
9055 | off -= (stub_entry->stub_offset | |
97b639ba AM |
9056 | + stub_entry->stub_sec->output_offset |
9057 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 9058 | |
ac2df442 AM |
9059 | size = 4; |
9060 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
9061 | { |
9062 | bfd_vma r2off; | |
9063 | ||
9064 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9065 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9066 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9067 | loc += 4; |
ac2df442 AM |
9068 | size = 12; |
9069 | if (PPC_HA (r2off) != 0) | |
9070 | { | |
9071 | size = 16; | |
9072 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9073 | loc += 4; | |
9074 | } | |
97b639ba | 9075 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 9076 | loc += 4; |
ac2df442 | 9077 | off -= size - 4; |
ad8e1ba5 | 9078 | } |
97b639ba | 9079 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 9080 | |
5c3dead3 AM |
9081 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9082 | { | |
9083 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
9084 | stub_entry->root.string); | |
9085 | htab->stub_error = TRUE; | |
9086 | return FALSE; | |
9087 | } | |
ee75fd95 AM |
9088 | |
9089 | if (info->emitrelocations) | |
9090 | { | |
176a0d42 AM |
9091 | r = get_relocs (stub_entry->stub_sec, 1); |
9092 | if (r == NULL) | |
9093 | return FALSE; | |
ee75fd95 AM |
9094 | r->r_offset = loc - stub_entry->stub_sec->contents; |
9095 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
9096 | r->r_addend = dest; | |
9097 | if (stub_entry->h != NULL) | |
9098 | { | |
9099 | struct elf_link_hash_entry **hashes; | |
9100 | unsigned long symndx; | |
9101 | struct ppc_link_hash_entry *h; | |
9102 | ||
9103 | hashes = elf_sym_hashes (htab->stub_bfd); | |
9104 | if (hashes == NULL) | |
9105 | { | |
9106 | bfd_size_type hsize; | |
9107 | ||
9108 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
9109 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
9110 | if (hashes == NULL) | |
9111 | return FALSE; | |
9112 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
9113 | htab->stub_globals = 1; | |
9114 | } | |
9115 | symndx = htab->stub_globals++; | |
9116 | h = stub_entry->h; | |
9117 | hashes[symndx] = &h->elf; | |
9118 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
9119 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 9120 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
9121 | if (h->elf.root.u.def.section != stub_entry->target_section) |
9122 | /* H is an opd symbol. The addend must be zero. */ | |
9123 | r->r_addend = 0; | |
9124 | else | |
9125 | { | |
9126 | off = (h->elf.root.u.def.value | |
9127 | + h->elf.root.u.def.section->output_offset | |
9128 | + h->elf.root.u.def.section->output_section->vma); | |
9129 | r->r_addend -= off; | |
9130 | } | |
9131 | } | |
9132 | } | |
721956f4 | 9133 | break; |
e86ce104 | 9134 | |
721956f4 | 9135 | case ppc_stub_plt_branch: |
ad8e1ba5 | 9136 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
9137 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
9138 | stub_entry->root.string + 9, | |
b34976b6 | 9139 | FALSE, FALSE); |
721956f4 AM |
9140 | if (br_entry == NULL) |
9141 | { | |
9142 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 9143 | stub_entry->root.string); |
b34976b6 AM |
9144 | htab->stub_error = TRUE; |
9145 | return FALSE; | |
721956f4 AM |
9146 | } |
9147 | ||
176a0d42 AM |
9148 | dest = (stub_entry->target_value |
9149 | + stub_entry->target_section->output_offset | |
9150 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 9151 | |
176a0d42 | 9152 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 9153 | htab->brlt->contents + br_entry->offset); |
721956f4 | 9154 | |
f94498ff | 9155 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 9156 | { |
f94498ff | 9157 | br_entry->iter = 0; |
84f5d08e | 9158 | |
f94498ff | 9159 | if (htab->relbrlt != NULL) |
84f5d08e | 9160 | { |
f94498ff AM |
9161 | /* Create a reloc for the branch lookup table entry. */ |
9162 | Elf_Internal_Rela rela; | |
9163 | bfd_byte *rl; | |
9164 | ||
9165 | rela.r_offset = (br_entry->offset | |
9166 | + htab->brlt->output_offset | |
9167 | + htab->brlt->output_section->vma); | |
9168 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9169 | rela.r_addend = dest; |
f94498ff AM |
9170 | |
9171 | rl = htab->relbrlt->contents; | |
9172 | rl += (htab->relbrlt->reloc_count++ | |
9173 | * sizeof (Elf64_External_Rela)); | |
9174 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
9175 | } | |
9176 | else if (info->emitrelocations) | |
9177 | { | |
176a0d42 AM |
9178 | r = get_relocs (htab->brlt, 1); |
9179 | if (r == NULL) | |
9180 | return FALSE; | |
9181 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
9182 | normal reloc processing. Symbols and offsets are not | |
9183 | translated from input file to output file form, so | |
9184 | set up the offset per the output file. */ | |
f94498ff AM |
9185 | r->r_offset = (br_entry->offset |
9186 | + htab->brlt->output_offset | |
9187 | + htab->brlt->output_section->vma); | |
9188 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9189 | r->r_addend = dest; |
84f5d08e | 9190 | } |
84f5d08e | 9191 | } |
721956f4 | 9192 | |
176a0d42 AM |
9193 | dest = (br_entry->offset |
9194 | + htab->brlt->output_offset | |
9195 | + htab->brlt->output_section->vma); | |
9196 | ||
9197 | off = (dest | |
4ce794b7 | 9198 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 9199 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9200 | |
ad8e1ba5 | 9201 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
9202 | { |
9203 | (*_bfd_error_handler) | |
e86ce104 | 9204 | (_("linkage table error against `%s'"), |
721956f4 | 9205 | stub_entry->root.string); |
5d1634d7 | 9206 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9207 | htab->stub_error = TRUE; |
9208 | return FALSE; | |
5d1634d7 | 9209 | } |
41bd81ab | 9210 | |
176a0d42 AM |
9211 | if (info->emitrelocations) |
9212 | { | |
9213 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
9214 | if (r == NULL) | |
9215 | return FALSE; | |
9216 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9217 | if (bfd_big_endian (info->output_bfd)) |
9218 | r[0].r_offset += 2; | |
176a0d42 AM |
9219 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
9220 | r[0].r_offset += 4; | |
9221 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9222 | r[0].r_addend = dest; | |
9223 | if (PPC_HA (off) != 0) | |
9224 | { | |
9225 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9226 | r[1].r_offset = r[0].r_offset + 4; | |
9227 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9228 | r[1].r_addend = r[0].r_addend; | |
9229 | } | |
9230 | } | |
9231 | ||
ad8e1ba5 AM |
9232 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9233 | { | |
176a0d42 | 9234 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9235 | { |
9236 | size = 16; | |
176a0d42 | 9237 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9238 | loc += 4; |
176a0d42 | 9239 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9240 | } |
9241 | else | |
9242 | { | |
9243 | size = 12; | |
176a0d42 | 9244 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 9245 | } |
ad8e1ba5 AM |
9246 | } |
9247 | else | |
9248 | { | |
9249 | bfd_vma r2off; | |
9250 | ||
9251 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9252 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9253 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9254 | loc += 4; |
ac2df442 | 9255 | size = 20; |
176a0d42 | 9256 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9257 | { |
9258 | size += 4; | |
176a0d42 | 9259 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9260 | loc += 4; |
176a0d42 | 9261 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9262 | loc += 4; |
9263 | } | |
9264 | else | |
9265 | { | |
176a0d42 | 9266 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
9267 | loc += 4; |
9268 | } | |
9269 | ||
9270 | if (PPC_HA (r2off) != 0) | |
9271 | { | |
9272 | size += 4; | |
9273 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9274 | loc += 4; | |
9275 | } | |
97b639ba | 9276 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
9277 | } |
9278 | loc += 4; | |
97b639ba | 9279 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 9280 | loc += 4; |
97b639ba | 9281 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 9282 | break; |
5d1634d7 | 9283 | |
721956f4 | 9284 | case ppc_stub_plt_call: |
e054468f | 9285 | if (stub_entry->h != NULL |
b31867b6 AM |
9286 | && stub_entry->h->is_func_descriptor |
9287 | && stub_entry->h->oh != NULL) | |
c862ae31 | 9288 | { |
b31867b6 AM |
9289 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
9290 | ||
9291 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
9292 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
9293 | FIXME: We used to define the symbol on one of the call | |
9294 | stubs instead, which is why we test symbol section id | |
9295 | against htab->top_id in various places. Likely all | |
9296 | these checks could now disappear. */ | |
9297 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
9298 | fh->elf.root.type = bfd_link_hash_undefweak; | |
c862ae31 AM |
9299 | } |
9300 | ||
721956f4 | 9301 | /* Now build the stub. */ |
e054468f | 9302 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 9303 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
9304 | abort (); |
9305 | ||
e054468f | 9306 | plt = htab->plt; |
25f23106 AM |
9307 | if (!htab->elf.dynamic_sections_created |
9308 | || stub_entry->h == NULL | |
9309 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9310 | plt = htab->iplt; |
9311 | ||
9312 | dest += plt->output_offset + plt->output_section->vma; | |
9313 | ||
9314 | if (stub_entry->h == NULL | |
9315 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
9316 | { | |
9317 | Elf_Internal_Rela rela; | |
9318 | bfd_byte *rl; | |
9319 | ||
9320 | rela.r_offset = dest; | |
25f23106 | 9321 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
9322 | rela.r_addend = (stub_entry->target_value |
9323 | + stub_entry->target_section->output_offset | |
9324 | + stub_entry->target_section->output_section->vma); | |
9325 | ||
25f23106 AM |
9326 | rl = (htab->reliplt->contents |
9327 | + (htab->reliplt->reloc_count++ | |
9328 | * sizeof (Elf64_External_Rela))); | |
9329 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
9330 | stub_entry->plt_ent->plt.offset |= 1; |
9331 | } | |
176a0d42 AM |
9332 | |
9333 | off = (dest | |
e054468f | 9334 | - elf_gp (plt->output_section->owner) |
176a0d42 | 9335 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9336 | |
ad8e1ba5 | 9337 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
9338 | { |
9339 | (*_bfd_error_handler) | |
9340 | (_("linkage table error against `%s'"), | |
e054468f AM |
9341 | stub_entry->h != NULL |
9342 | ? stub_entry->h->elf.root.root.string | |
9343 | : "<local sym>"); | |
721956f4 | 9344 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9345 | htab->stub_error = TRUE; |
9346 | return FALSE; | |
721956f4 AM |
9347 | } |
9348 | ||
176a0d42 AM |
9349 | r = NULL; |
9350 | if (info->emitrelocations) | |
9351 | { | |
9352 | r = get_relocs (stub_entry->stub_sec, | |
9353 | (2 + (PPC_HA (off) != 0) | |
9354 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
9355 | if (r == NULL) | |
9356 | return FALSE; | |
9357 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9358 | if (bfd_big_endian (info->output_bfd)) |
9359 | r[0].r_offset += 2; | |
176a0d42 AM |
9360 | r[0].r_addend = dest; |
9361 | } | |
a7f2871e AM |
9362 | if (stub_entry->h != NULL |
9363 | && (stub_entry->h == htab->tls_get_addr_fd | |
9364 | || stub_entry->h == htab->tls_get_addr) | |
9365 | && !htab->no_tls_get_addr_opt) | |
9366 | p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r); | |
9367 | else | |
9368 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
9369 | size = p - loc; |
9370 | break; | |
9371 | ||
9372 | default: | |
9373 | BFD_FAIL (); | |
b34976b6 | 9374 | return FALSE; |
721956f4 AM |
9375 | } |
9376 | ||
eea6121a | 9377 | stub_entry->stub_sec->size += size; |
97b639ba | 9378 | |
ee75fd95 | 9379 | if (htab->emit_stub_syms) |
97b639ba AM |
9380 | { |
9381 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
9382 | size_t len1, len2; |
9383 | char *name; | |
9384 | const char *const stub_str[] = { "long_branch", | |
9385 | "long_branch_r2off", | |
9386 | "plt_branch", | |
9387 | "plt_branch_r2off", | |
9388 | "plt_call" }; | |
9389 | ||
9390 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
9391 | len2 = strlen (stub_entry->root.string); | |
9392 | name = bfd_malloc (len1 + len2 + 2); | |
9393 | if (name == NULL) | |
9394 | return FALSE; | |
9395 | memcpy (name, stub_entry->root.string, 9); | |
9396 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
9397 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
9398 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
9399 | if (h == NULL) |
9400 | return FALSE; | |
9401 | if (h->root.type == bfd_link_hash_new) | |
9402 | { | |
9403 | h->root.type = bfd_link_hash_defined; | |
9404 | h->root.u.def.section = stub_entry->stub_sec; | |
9405 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
9406 | h->ref_regular = 1; |
9407 | h->def_regular = 1; | |
9408 | h->ref_regular_nonweak = 1; | |
9409 | h->forced_local = 1; | |
9410 | h->non_elf = 0; | |
97b639ba AM |
9411 | } |
9412 | } | |
9413 | ||
b34976b6 | 9414 | return TRUE; |
721956f4 AM |
9415 | } |
9416 | ||
9417 | /* As above, but don't actually build the stub. Just bump offset so | |
9418 | we know stub section sizes, and select plt_branch stubs where | |
9419 | long_branch stubs won't do. */ | |
9420 | ||
b34976b6 | 9421 | static bfd_boolean |
4ce794b7 | 9422 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
9423 | { |
9424 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 9425 | struct bfd_link_info *info; |
721956f4 AM |
9426 | struct ppc_link_hash_table *htab; |
9427 | bfd_vma off; | |
9428 | int size; | |
9429 | ||
9430 | /* Massage our args to the form they really have. */ | |
9431 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
9432 | info = in_arg; |
9433 | ||
9434 | htab = ppc_hash_table (info); | |
721956f4 AM |
9435 | |
9436 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
9437 | { | |
e054468f AM |
9438 | asection *plt; |
9439 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 9440 | if (off >= (bfd_vma) -2) |
411e1bfb | 9441 | abort (); |
e054468f | 9442 | plt = htab->plt; |
25f23106 AM |
9443 | if (!htab->elf.dynamic_sections_created |
9444 | || stub_entry->h == NULL | |
9445 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9446 | plt = htab->iplt; |
9447 | off += (plt->output_offset | |
9448 | + plt->output_section->vma | |
9449 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 9450 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9451 | |
ad8e1ba5 | 9452 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
9453 | if (PPC_HA (off) == 0) |
9454 | size -= 4; | |
4ce794b7 | 9455 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 9456 | size += 4; |
a7f2871e AM |
9457 | if (stub_entry->h != NULL |
9458 | && (stub_entry->h == htab->tls_get_addr_fd | |
9459 | || stub_entry->h == htab->tls_get_addr) | |
9460 | && !htab->no_tls_get_addr_opt) | |
9461 | size += 13 * 4; | |
176a0d42 AM |
9462 | if (info->emitrelocations) |
9463 | { | |
9464 | stub_entry->stub_sec->reloc_count | |
9465 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
9466 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9467 | } | |
721956f4 AM |
9468 | } |
9469 | else | |
9470 | { | |
ad8e1ba5 AM |
9471 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
9472 | variants. */ | |
ac2df442 AM |
9473 | bfd_vma r2off = 0; |
9474 | ||
721956f4 AM |
9475 | off = (stub_entry->target_value |
9476 | + stub_entry->target_section->output_offset | |
9477 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 9478 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
9479 | + stub_entry->stub_sec->output_offset |
9480 | + stub_entry->stub_sec->output_section->vma); | |
9481 | ||
ad8e1ba5 AM |
9482 | /* Reset the stub type from the plt variant in case we now |
9483 | can reach with a shorter stub. */ | |
9484 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
9485 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
9486 | ||
9487 | size = 4; | |
9488 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
9489 | { | |
ac2df442 AM |
9490 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
9491 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9492 | size = 12; | |
9493 | if (PPC_HA (r2off) != 0) | |
9494 | size = 16; | |
9495 | off -= size - 4; | |
ad8e1ba5 AM |
9496 | } |
9497 | ||
9498 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
9499 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9500 | { | |
9501 | struct ppc_branch_hash_entry *br_entry; | |
9502 | ||
9503 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
9504 | stub_entry->root.string + 9, | |
b34976b6 | 9505 | TRUE, FALSE); |
721956f4 AM |
9506 | if (br_entry == NULL) |
9507 | { | |
9508 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 9509 | stub_entry->root.string); |
b34976b6 AM |
9510 | htab->stub_error = TRUE; |
9511 | return FALSE; | |
721956f4 AM |
9512 | } |
9513 | ||
9514 | if (br_entry->iter != htab->stub_iteration) | |
9515 | { | |
9516 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
9517 | br_entry->offset = htab->brlt->size; |
9518 | htab->brlt->size += 8; | |
63bc6f6c | 9519 | |
ee75fd95 | 9520 | if (htab->relbrlt != NULL) |
eea6121a | 9521 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
9522 | else if (info->emitrelocations) |
9523 | { | |
9524 | htab->brlt->reloc_count += 1; | |
9525 | htab->brlt->flags |= SEC_RELOC; | |
9526 | } | |
721956f4 | 9527 | } |
ad8e1ba5 AM |
9528 | |
9529 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9530 | off = (br_entry->offset |
9531 | + htab->brlt->output_offset | |
9532 | + htab->brlt->output_section->vma | |
9533 | - elf_gp (htab->brlt->output_section->owner) | |
9534 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9535 | ||
176a0d42 AM |
9536 | if (info->emitrelocations) |
9537 | { | |
9538 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9539 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9540 | } | |
9541 | ||
ac2df442 AM |
9542 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9543 | { | |
9544 | size = 12; | |
176a0d42 | 9545 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9546 | size = 16; |
9547 | } | |
9548 | else | |
9549 | { | |
9550 | size = 20; | |
176a0d42 | 9551 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9552 | size += 4; |
9553 | ||
9554 | if (PPC_HA (r2off) != 0) | |
9555 | size += 4; | |
9556 | } | |
721956f4 | 9557 | } |
84f5d08e AM |
9558 | else if (info->emitrelocations) |
9559 | { | |
9560 | stub_entry->stub_sec->reloc_count += 1; | |
9561 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9562 | } | |
721956f4 AM |
9563 | } |
9564 | ||
eea6121a | 9565 | stub_entry->stub_sec->size += size; |
b34976b6 | 9566 | return TRUE; |
721956f4 AM |
9567 | } |
9568 | ||
9569 | /* Set up various things so that we can make a list of input sections | |
9570 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9571 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9572 | |
9573 | int | |
4c52953f AM |
9574 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
9575 | struct bfd_link_info *info, | |
9576 | int no_multi_toc) | |
721956f4 AM |
9577 | { |
9578 | bfd *input_bfd; | |
734b6cf9 | 9579 | int top_id, top_index, id; |
721956f4 | 9580 | asection *section; |
734b6cf9 | 9581 | asection **input_list; |
721956f4 AM |
9582 | bfd_size_type amt; |
9583 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9584 | ||
4c52953f AM |
9585 | htab->no_multi_toc = no_multi_toc; |
9586 | ||
4ce794b7 | 9587 | if (htab->brlt == NULL) |
721956f4 AM |
9588 | return 0; |
9589 | ||
1e2f5b6e | 9590 | /* Find the top input section id. */ |
3d6f9012 | 9591 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9592 | input_bfd != NULL; |
9593 | input_bfd = input_bfd->link_next) | |
9594 | { | |
721956f4 AM |
9595 | for (section = input_bfd->sections; |
9596 | section != NULL; | |
9597 | section = section->next) | |
9598 | { | |
9599 | if (top_id < section->id) | |
9600 | top_id = section->id; | |
9601 | } | |
9602 | } | |
721956f4 | 9603 | |
8f3bab57 | 9604 | htab->top_id = top_id; |
721956f4 | 9605 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9606 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9607 | if (htab->stub_group == NULL) |
9608 | return -1; | |
9609 | ||
3d6f9012 AM |
9610 | /* Set toc_off for com, und, abs and ind sections. */ |
9611 | for (id = 0; id < 3; id++) | |
9612 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9613 | |
3d6f9012 | 9614 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
9615 | |
9616 | /* We can't use output_bfd->section_count here to find the top output | |
9617 | section index as some sections may have been removed, and | |
8423293d | 9618 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
9619 | for (section = output_bfd->sections, top_index = 0; |
9620 | section != NULL; | |
9621 | section = section->next) | |
9622 | { | |
9623 | if (top_index < section->index) | |
9624 | top_index = section->index; | |
9625 | } | |
9626 | ||
9627 | htab->top_index = top_index; | |
9628 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 9629 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
9630 | htab->input_list = input_list; |
9631 | if (input_list == NULL) | |
9632 | return -1; | |
9633 | ||
721956f4 AM |
9634 | return 1; |
9635 | } | |
9636 | ||
e717da7e AM |
9637 | /* The linker repeatedly calls this function for each TOC input section |
9638 | and linker generated GOT section. Group input bfds such that the toc | |
9639 | within a group is less than 64k in size. Will break with cute linker | |
9640 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
9641 | |
9642 | void | |
4ce794b7 | 9643 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
9644 | { |
9645 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9646 | ||
4c52953f AM |
9647 | if (!htab->no_multi_toc) |
9648 | { | |
9649 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
9650 | bfd_vma off = addr - htab->toc_curr; | |
9651 | ||
9652 | if (off + isec->size > 0x10000) | |
9653 | htab->toc_curr = addr; | |
99877b66 | 9654 | |
4c52953f AM |
9655 | elf_gp (isec->owner) = (htab->toc_curr |
9656 | - elf_gp (isec->output_section->owner) | |
9657 | + TOC_BASE_OFF); | |
9658 | } | |
ad8e1ba5 AM |
9659 | } |
9660 | ||
9661 | /* Called after the last call to the above function. */ | |
9662 | ||
9663 | void | |
4c52953f | 9664 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
9665 | { |
9666 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 9667 | |
4c52953f AM |
9668 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
9669 | ||
ad8e1ba5 AM |
9670 | /* toc_curr tracks the TOC offset used for code sections below in |
9671 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 9672 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
9673 | } |
9674 | ||
9b5ecbd0 AM |
9675 | /* No toc references were found in ISEC. If the code in ISEC makes no |
9676 | calls, then there's no need to use toc adjusting stubs when branching | |
9677 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
9678 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
9679 | needed, and 2 if a cyclical call-graph was found but no other reason | |
9680 | for a stub was detected. If called from the top level, a return of | |
9681 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
9682 | |
9683 | static int | |
4ce794b7 | 9684 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 9685 | { |
4c52953f AM |
9686 | Elf_Internal_Rela *relstart, *rel; |
9687 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 9688 | int ret; |
4c52953f | 9689 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 9690 | |
772119ce AM |
9691 | /* We know none of our code bearing sections will need toc stubs. */ |
9692 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
9693 | return 0; | |
9694 | ||
eea6121a | 9695 | if (isec->size == 0) |
082c50f8 AM |
9696 | return 0; |
9697 | ||
4c52953f AM |
9698 | if (isec->output_section == NULL) |
9699 | return 0; | |
9700 | ||
4c52953f AM |
9701 | if (isec->reloc_count == 0) |
9702 | return 0; | |
9703 | ||
9704 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
9705 | info->keep_memory); | |
9706 | if (relstart == NULL) | |
9707 | return -1; | |
9708 | ||
9709 | /* Look for branches to outside of this section. */ | |
9710 | local_syms = NULL; | |
9711 | ret = 0; | |
9712 | htab = ppc_hash_table (info); | |
9713 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 9714 | { |
4c52953f AM |
9715 | enum elf_ppc64_reloc_type r_type; |
9716 | unsigned long r_symndx; | |
9717 | struct elf_link_hash_entry *h; | |
90aecf7a | 9718 | struct ppc_link_hash_entry *eh; |
4c52953f AM |
9719 | Elf_Internal_Sym *sym; |
9720 | asection *sym_sec; | |
74f0fb50 | 9721 | struct _opd_sec_data *opd; |
4c52953f AM |
9722 | bfd_vma sym_value; |
9723 | bfd_vma dest; | |
9724 | ||
9725 | r_type = ELF64_R_TYPE (rel->r_info); | |
9726 | if (r_type != R_PPC64_REL24 | |
9727 | && r_type != R_PPC64_REL14 | |
9728 | && r_type != R_PPC64_REL14_BRTAKEN | |
9729 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
9730 | continue; | |
9731 | ||
9732 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9733 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
9734 | isec->owner)) | |
9b5ecbd0 | 9735 | { |
4c52953f AM |
9736 | ret = -1; |
9737 | break; | |
9b5ecbd0 | 9738 | } |
9b5ecbd0 | 9739 | |
2917689a | 9740 | /* Calls to dynamic lib functions go through a plt call stub |
90aecf7a AM |
9741 | that uses r2. */ |
9742 | eh = (struct ppc_link_hash_entry *) h; | |
9743 | if (eh != NULL | |
9744 | && (eh->elf.plt.plist != NULL | |
9745 | || (eh->oh != NULL | |
b31867b6 | 9746 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) |
2917689a | 9747 | { |
90aecf7a AM |
9748 | ret = 1; |
9749 | break; | |
2917689a AM |
9750 | } |
9751 | ||
90aecf7a AM |
9752 | if (sym_sec == NULL) |
9753 | /* Ignore other undefined symbols. */ | |
9754 | continue; | |
9755 | ||
2917689a AM |
9756 | /* Assume branches to other sections not included in the link need |
9757 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
9758 | if (sym_sec->output_section == NULL) |
9759 | { | |
9760 | ret = 1; | |
9761 | break; | |
9762 | } | |
9763 | ||
9764 | if (h == NULL) | |
9765 | sym_value = sym->st_value; | |
9766 | else | |
9767 | { | |
9768 | if (h->root.type != bfd_link_hash_defined | |
9769 | && h->root.type != bfd_link_hash_defweak) | |
9770 | abort (); | |
9771 | sym_value = h->root.u.def.value; | |
9772 | } | |
9773 | sym_value += rel->r_addend; | |
9774 | ||
9775 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
9776 | opd = get_opd_info (sym_sec); |
9777 | if (opd != NULL) | |
4c52953f | 9778 | { |
74f0fb50 | 9779 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
9780 | { |
9781 | long adjust; | |
9782 | ||
74f0fb50 | 9783 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
9784 | if (adjust == -1) |
9785 | /* Assume deleted functions won't ever be called. */ | |
9786 | continue; | |
9787 | sym_value += adjust; | |
9788 | } | |
9789 | ||
9790 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9791 | if (dest == (bfd_vma) -1) | |
9792 | continue; | |
9793 | } | |
9794 | else | |
9795 | dest = (sym_value | |
9796 | + sym_sec->output_offset | |
9797 | + sym_sec->output_section->vma); | |
9798 | ||
9799 | /* Ignore branch to self. */ | |
9800 | if (sym_sec == isec) | |
9801 | continue; | |
9802 | ||
9803 | /* If the called function uses the toc, we need a stub. */ | |
9804 | if (sym_sec->has_toc_reloc | |
9805 | || sym_sec->makes_toc_func_call) | |
9806 | { | |
9807 | ret = 1; | |
9808 | break; | |
9809 | } | |
9810 | ||
9811 | /* Assume any branch that needs a long branch stub might in fact | |
9812 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9813 | else if (dest - (isec->output_offset | |
9814 | + isec->output_section->vma | |
9815 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9816 | { |
9817 | ret = 1; | |
9818 | break; | |
9819 | } | |
4c52953f AM |
9820 | |
9821 | /* If calling back to a section in the process of being tested, we | |
9822 | can't say for sure that no toc adjusting stubs are needed, so | |
9823 | don't return zero. */ | |
9824 | else if (sym_sec->call_check_in_progress) | |
9825 | ret = 2; | |
9826 | ||
9827 | /* Branches to another section that itself doesn't have any TOC | |
9828 | references are OK. Recursively call ourselves to check. */ | |
9829 | else if (sym_sec->id <= htab->top_id | |
9830 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9831 | { | |
9832 | int recur; | |
9833 | ||
9834 | /* Mark current section as indeterminate, so that other | |
9835 | sections that call back to current won't be marked as | |
9836 | known. */ | |
9837 | isec->call_check_in_progress = 1; | |
9838 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9839 | isec->call_check_in_progress = 0; | |
9840 | ||
9841 | if (recur < 0) | |
9842 | { | |
9843 | /* An error. Exit. */ | |
9844 | ret = -1; | |
9845 | break; | |
9846 | } | |
9847 | else if (recur <= 1) | |
9848 | { | |
9849 | /* Known result. Mark as checked and set section flag. */ | |
9850 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9851 | if (recur != 0) | |
9852 | { | |
9853 | sym_sec->makes_toc_func_call = 1; | |
9854 | ret = 1; | |
9855 | break; | |
9856 | } | |
9857 | } | |
9858 | else | |
9859 | { | |
9860 | /* Unknown result. Continue checking. */ | |
9861 | ret = 2; | |
9862 | } | |
9863 | } | |
9b5ecbd0 AM |
9864 | } |
9865 | ||
4c52953f | 9866 | if (local_syms != NULL |
0ffa91dd | 9867 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
9868 | free (local_syms); |
9869 | if (elf_section_data (isec)->relocs != relstart) | |
9870 | free (relstart); | |
9871 | ||
9b5ecbd0 AM |
9872 | return ret; |
9873 | } | |
9874 | ||
721956f4 AM |
9875 | /* The linker repeatedly calls this function for each input section, |
9876 | in the order that input sections are linked into output sections. | |
9877 | Build lists of input sections to determine groupings between which | |
9878 | we may insert linker stubs. */ | |
9879 | ||
9b5ecbd0 | 9880 | bfd_boolean |
4ce794b7 | 9881 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9882 | { |
9883 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9884 | ||
734b6cf9 AM |
9885 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9886 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9887 | { |
734b6cf9 | 9888 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9889 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9890 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9891 | /* This happens to make the list in reverse order, |
9892 | which is what we want. */ | |
734b6cf9 AM |
9893 | PREV_SEC (isec) = *list; |
9894 | *list = isec; | |
721956f4 | 9895 | } |
ad8e1ba5 | 9896 | |
4c52953f | 9897 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9898 | { |
4c52953f AM |
9899 | /* If a code section has a function that uses the TOC then we need |
9900 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9901 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9902 | can't find their function symbol (shouldn't ever happen now). |
9903 | Also specially treat .fixup for the linux kernel. .fixup | |
9904 | contains branches, but only back to the function that hit an | |
9905 | exception. */ | |
9906 | if (isec->has_toc_reloc | |
9907 | || (isec->flags & SEC_CODE) == 0 | |
9908 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9909 | { |
9910 | if (elf_gp (isec->owner) != 0) | |
9911 | htab->toc_curr = elf_gp (isec->owner); | |
9912 | } | |
9913 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9914 | { | |
9915 | int ret = toc_adjusting_stub_needed (info, isec); | |
9916 | if (ret < 0) | |
9917 | return FALSE; | |
9918 | else | |
9919 | isec->makes_toc_func_call = ret & 1; | |
9920 | } | |
9b5ecbd0 | 9921 | } |
ad8e1ba5 AM |
9922 | |
9923 | /* Functions that don't use the TOC can belong in any TOC group. | |
9924 | Use the last TOC base. This happens to make _init and _fini | |
9925 | pasting work. */ | |
9926 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9927 | return TRUE; |
721956f4 AM |
9928 | } |
9929 | ||
9930 | /* See whether we can group stub sections together. Grouping stub | |
9931 | sections may result in fewer stubs. More importantly, we need to | |
9932 | put all .init* and .fini* stubs at the beginning of the .init or | |
9933 | .fini output sections respectively, because glibc splits the | |
9934 | _init and _fini functions into multiple parts. Putting a stub in | |
9935 | the middle of a function is not a good idea. */ | |
9936 | ||
9937 | static void | |
4ce794b7 AM |
9938 | group_sections (struct ppc_link_hash_table *htab, |
9939 | bfd_size_type stub_group_size, | |
9940 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9941 | { |
7c8fe5c4 AM |
9942 | asection **list; |
9943 | bfd_size_type stub14_group_size; | |
9944 | bfd_boolean suppress_size_errors; | |
9945 | ||
9946 | suppress_size_errors = FALSE; | |
9947 | stub14_group_size = stub_group_size; | |
9948 | if (stub_group_size == 1) | |
9949 | { | |
9950 | /* Default values. */ | |
9951 | if (stubs_always_before_branch) | |
9952 | { | |
9953 | stub_group_size = 0x1e00000; | |
9954 | stub14_group_size = 0x7800; | |
9955 | } | |
9956 | else | |
9957 | { | |
9958 | stub_group_size = 0x1c00000; | |
9959 | stub14_group_size = 0x7000; | |
9960 | } | |
9961 | suppress_size_errors = TRUE; | |
9962 | } | |
9963 | ||
9964 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9965 | do |
721956f4 | 9966 | { |
734b6cf9 AM |
9967 | asection *tail = *list; |
9968 | while (tail != NULL) | |
721956f4 | 9969 | { |
734b6cf9 AM |
9970 | asection *curr; |
9971 | asection *prev; | |
9972 | bfd_size_type total; | |
9973 | bfd_boolean big_sec; | |
9974 | bfd_vma curr_toc; | |
9975 | ||
9976 | curr = tail; | |
eea6121a | 9977 | total = tail->size; |
7c8fe5c4 AM |
9978 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9979 | ? stub14_group_size : stub_group_size); | |
9980 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9981 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9982 | tail->owner, tail); | |
734b6cf9 AM |
9983 | curr_toc = htab->stub_group[tail->id].toc_off; |
9984 | ||
9985 | while ((prev = PREV_SEC (curr)) != NULL | |
9986 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9987 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9988 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9989 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9990 | curr = prev; |
9991 | ||
9992 | /* OK, the size from the start of CURR to the end is less | |
9993 | than stub_group_size and thus can be handled by one stub | |
9994 | section. (or the tail section is itself larger than | |
9995 | stub_group_size, in which case we may be toast.) We | |
9996 | should really be keeping track of the total size of stubs | |
9997 | added here, as stubs contribute to the final output | |
9998 | section size. That's a little tricky, and this way will | |
9999 | only break if stubs added make the total size more than | |
10000 | 2^25, ie. for the default stub_group_size, if stubs total | |
10001 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
10002 | do | |
721956f4 AM |
10003 | { |
10004 | prev = PREV_SEC (tail); | |
734b6cf9 | 10005 | /* Set up this stub group. */ |
721956f4 AM |
10006 | htab->stub_group[tail->id].link_sec = curr; |
10007 | } | |
734b6cf9 AM |
10008 | while (tail != curr && (tail = prev) != NULL); |
10009 | ||
10010 | /* But wait, there's more! Input sections up to stub_group_size | |
10011 | bytes before the stub section can be handled by it too. | |
10012 | Don't do this if we have a really large section after the | |
10013 | stubs, as adding more stubs increases the chance that | |
10014 | branches may not reach into the stub section. */ | |
10015 | if (!stubs_always_before_branch && !big_sec) | |
10016 | { | |
10017 | total = 0; | |
10018 | while (prev != NULL | |
10019 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
10020 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
10021 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
10022 | && htab->stub_group[prev->id].toc_off == curr_toc) |
10023 | { | |
10024 | tail = prev; | |
10025 | prev = PREV_SEC (tail); | |
10026 | htab->stub_group[tail->id].link_sec = curr; | |
10027 | } | |
10028 | } | |
10029 | tail = prev; | |
721956f4 AM |
10030 | } |
10031 | } | |
734b6cf9 AM |
10032 | while (list-- != htab->input_list); |
10033 | free (htab->input_list); | |
721956f4 AM |
10034 | #undef PREV_SEC |
10035 | } | |
10036 | ||
721956f4 AM |
10037 | /* Determine and set the size of the stub section for a final link. |
10038 | ||
10039 | The basic idea here is to examine all the relocations looking for | |
10040 | PC-relative calls to a target that is unreachable with a "bl" | |
10041 | instruction. */ | |
10042 | ||
b34976b6 | 10043 | bfd_boolean |
4ce794b7 | 10044 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
10045 | struct bfd_link_info *info, |
10046 | bfd_signed_vma group_size, | |
10047 | asection *(*add_stub_section) (const char *, asection *), | |
10048 | void (*layout_sections_again) (void)) | |
721956f4 AM |
10049 | { |
10050 | bfd_size_type stub_group_size; | |
b34976b6 | 10051 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
10052 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
10053 | ||
10054 | /* Stash our params away. */ | |
721956f4 AM |
10055 | htab->add_stub_section = add_stub_section; |
10056 | htab->layout_sections_again = layout_sections_again; | |
10057 | stubs_always_before_branch = group_size < 0; | |
10058 | if (group_size < 0) | |
10059 | stub_group_size = -group_size; | |
10060 | else | |
10061 | stub_group_size = group_size; | |
721956f4 AM |
10062 | |
10063 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
10064 | ||
721956f4 AM |
10065 | while (1) |
10066 | { | |
10067 | bfd *input_bfd; | |
10068 | unsigned int bfd_indx; | |
10069 | asection *stub_sec; | |
721956f4 AM |
10070 | |
10071 | htab->stub_iteration += 1; | |
721956f4 AM |
10072 | |
10073 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
10074 | input_bfd != NULL; | |
10075 | input_bfd = input_bfd->link_next, bfd_indx++) | |
10076 | { | |
10077 | Elf_Internal_Shdr *symtab_hdr; | |
10078 | asection *section; | |
6cdc0ccc | 10079 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 10080 | |
0c8d6e5c | 10081 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
10082 | continue; |
10083 | ||
721956f4 | 10084 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 10085 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
10086 | if (symtab_hdr->sh_info == 0) |
10087 | continue; | |
10088 | ||
721956f4 AM |
10089 | /* Walk over each section attached to the input bfd. */ |
10090 | for (section = input_bfd->sections; | |
10091 | section != NULL; | |
10092 | section = section->next) | |
10093 | { | |
721956f4 | 10094 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
10095 | |
10096 | /* If there aren't any relocs, then there's nothing more | |
10097 | to do. */ | |
10098 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
10099 | || (section->flags & SEC_ALLOC) == 0 |
10100 | || (section->flags & SEC_LOAD) == 0 | |
10101 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
10102 | || section->reloc_count == 0) |
10103 | continue; | |
10104 | ||
10105 | /* If this section is a link-once section that will be | |
10106 | discarded, then don't create any stubs. */ | |
10107 | if (section->output_section == NULL | |
10108 | || section->output_section->owner != output_bfd) | |
10109 | continue; | |
10110 | ||
1e2f5b6e AM |
10111 | /* Get the relocs. */ |
10112 | internal_relocs | |
4ce794b7 | 10113 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 10114 | info->keep_memory); |
721956f4 | 10115 | if (internal_relocs == NULL) |
1e2f5b6e | 10116 | goto error_ret_free_local; |
721956f4 AM |
10117 | |
10118 | /* Now examine each relocation. */ | |
10119 | irela = internal_relocs; | |
10120 | irelaend = irela + section->reloc_count; | |
10121 | for (; irela < irelaend; irela++) | |
10122 | { | |
4ce794b7 AM |
10123 | enum elf_ppc64_reloc_type r_type; |
10124 | unsigned int r_indx; | |
721956f4 AM |
10125 | enum ppc_stub_type stub_type; |
10126 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 10127 | asection *sym_sec, *code_sec; |
e054468f | 10128 | bfd_vma sym_value, code_value; |
721956f4 | 10129 | bfd_vma destination; |
8843416a | 10130 | bfd_boolean ok_dest; |
721956f4 | 10131 | struct ppc_link_hash_entry *hash; |
8387904d | 10132 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
10133 | struct elf_link_hash_entry *h; |
10134 | Elf_Internal_Sym *sym; | |
721956f4 AM |
10135 | char *stub_name; |
10136 | const asection *id_sec; | |
74f0fb50 | 10137 | struct _opd_sec_data *opd; |
e054468f | 10138 | struct plt_entry *plt_ent; |
721956f4 AM |
10139 | |
10140 | r_type = ELF64_R_TYPE (irela->r_info); | |
10141 | r_indx = ELF64_R_SYM (irela->r_info); | |
10142 | ||
4ce794b7 | 10143 | if (r_type >= R_PPC64_max) |
721956f4 AM |
10144 | { |
10145 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 10146 | goto error_ret_free_internal; |
721956f4 AM |
10147 | } |
10148 | ||
10149 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
10150 | if (r_type != R_PPC64_REL24 |
10151 | && r_type != R_PPC64_REL14 | |
10152 | && r_type != R_PPC64_REL14_BRTAKEN | |
10153 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
10154 | continue; |
10155 | ||
10156 | /* Now determine the call target, its name, value, | |
10157 | section. */ | |
411e1bfb AM |
10158 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
10159 | r_indx, input_bfd)) | |
10160 | goto error_ret_free_internal; | |
10161 | hash = (struct ppc_link_hash_entry *) h; | |
10162 | ||
8843416a | 10163 | ok_dest = FALSE; |
8387904d | 10164 | fdh = NULL; |
7fe2b9a6 | 10165 | sym_value = 0; |
411e1bfb | 10166 | if (hash == NULL) |
721956f4 | 10167 | { |
411e1bfb | 10168 | sym_value = sym->st_value; |
8843416a | 10169 | ok_dest = TRUE; |
721956f4 | 10170 | } |
7fe2b9a6 AM |
10171 | else if (hash->elf.root.type == bfd_link_hash_defined |
10172 | || hash->elf.root.type == bfd_link_hash_defweak) | |
10173 | { | |
10174 | sym_value = hash->elf.root.u.def.value; | |
10175 | if (sym_sec->output_section != NULL) | |
10176 | ok_dest = TRUE; | |
10177 | } | |
10178 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
10179 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 10180 | { |
99877b66 | 10181 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
10182 | use the func descriptor sym instead if it is |
10183 | defined. */ | |
ceb1f1ef | 10184 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 10185 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 10186 | { |
8387904d AM |
10187 | if (fdh->elf.root.type == bfd_link_hash_defined |
10188 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
10189 | { | |
10190 | sym_sec = fdh->elf.root.u.def.section; | |
10191 | sym_value = fdh->elf.root.u.def.value; | |
10192 | if (sym_sec->output_section != NULL) | |
10193 | ok_dest = TRUE; | |
10194 | } | |
99877b66 AM |
10195 | else |
10196 | fdh = NULL; | |
8387904d | 10197 | } |
7fe2b9a6 AM |
10198 | } |
10199 | else | |
10200 | { | |
10201 | bfd_set_error (bfd_error_bad_value); | |
10202 | goto error_ret_free_internal; | |
721956f4 AM |
10203 | } |
10204 | ||
8843416a AM |
10205 | destination = 0; |
10206 | if (ok_dest) | |
10207 | { | |
10208 | sym_value += irela->r_addend; | |
10209 | destination = (sym_value | |
10210 | + sym_sec->output_offset | |
10211 | + sym_sec->output_section->vma); | |
10212 | } | |
10213 | ||
8387904d | 10214 | code_sec = sym_sec; |
e054468f | 10215 | code_value = sym_value; |
74f0fb50 AM |
10216 | opd = get_opd_info (sym_sec); |
10217 | if (opd != NULL) | |
8387904d AM |
10218 | { |
10219 | bfd_vma dest; | |
10220 | ||
74f0fb50 | 10221 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 10222 | { |
74f0fb50 | 10223 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
10224 | if (adjust == -1) |
10225 | continue; | |
e054468f | 10226 | code_value += adjust; |
8387904d AM |
10227 | sym_value += adjust; |
10228 | } | |
10229 | dest = opd_entry_value (sym_sec, sym_value, | |
e054468f | 10230 | &code_sec, &code_value); |
8387904d AM |
10231 | if (dest != (bfd_vma) -1) |
10232 | { | |
10233 | destination = dest; | |
10234 | if (fdh != NULL) | |
10235 | { | |
10236 | /* Fixup old ABI sym to point at code | |
10237 | entry. */ | |
99877b66 | 10238 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 10239 | hash->elf.root.u.def.section = code_sec; |
e054468f | 10240 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
10241 | } |
10242 | } | |
10243 | } | |
10244 | ||
721956f4 | 10245 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 10246 | plt_ent = NULL; |
721956f4 | 10247 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 10248 | &plt_ent, destination); |
ad8e1ba5 AM |
10249 | |
10250 | if (stub_type != ppc_stub_plt_call) | |
10251 | { | |
10252 | /* Check whether we need a TOC adjusting stub. | |
10253 | Since the linker pastes together pieces from | |
10254 | different object files when creating the | |
10255 | _init and _fini functions, it may be that a | |
10256 | call to what looks like a local sym is in | |
10257 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
10258 | if (code_sec != NULL |
10259 | && code_sec->output_section != NULL | |
10260 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 10261 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
10262 | && (code_sec->has_toc_reloc |
10263 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
10264 | stub_type = ppc_stub_long_branch_r2off; |
10265 | } | |
10266 | ||
721956f4 AM |
10267 | if (stub_type == ppc_stub_none) |
10268 | continue; | |
10269 | ||
411e1bfb AM |
10270 | /* __tls_get_addr calls might be eliminated. */ |
10271 | if (stub_type != ppc_stub_plt_call | |
10272 | && hash != NULL | |
8387904d AM |
10273 | && (hash == htab->tls_get_addr |
10274 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
10275 | && section->has_tls_reloc |
10276 | && irela != internal_relocs) | |
10277 | { | |
10278 | /* Get tls info. */ | |
e7b938ca | 10279 | char *tls_mask; |
411e1bfb | 10280 | |
3a71aa26 | 10281 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
10282 | irela - 1, input_bfd)) |
10283 | goto error_ret_free_internal; | |
e7b938ca | 10284 | if (*tls_mask != 0) |
411e1bfb AM |
10285 | continue; |
10286 | } | |
10287 | ||
721956f4 AM |
10288 | /* Support for grouping stub sections. */ |
10289 | id_sec = htab->stub_group[section->id].link_sec; | |
10290 | ||
10291 | /* Get the name of this stub. */ | |
10292 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
10293 | if (!stub_name) | |
10294 | goto error_ret_free_internal; | |
10295 | ||
10296 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 10297 | stub_name, FALSE, FALSE); |
721956f4 AM |
10298 | if (stub_entry != NULL) |
10299 | { | |
10300 | /* The proper stub has already been created. */ | |
10301 | free (stub_name); | |
10302 | continue; | |
10303 | } | |
10304 | ||
10305 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
10306 | if (stub_entry == NULL) | |
10307 | { | |
10308 | free (stub_name); | |
6cdc0ccc AM |
10309 | error_ret_free_internal: |
10310 | if (elf_section_data (section)->relocs == NULL) | |
10311 | free (internal_relocs); | |
10312 | error_ret_free_local: | |
10313 | if (local_syms != NULL | |
10314 | && (symtab_hdr->contents | |
10315 | != (unsigned char *) local_syms)) | |
10316 | free (local_syms); | |
b34976b6 | 10317 | return FALSE; |
721956f4 AM |
10318 | } |
10319 | ||
ad8e1ba5 | 10320 | stub_entry->stub_type = stub_type; |
e054468f AM |
10321 | if (stub_type != ppc_stub_plt_call) |
10322 | { | |
10323 | stub_entry->target_value = code_value; | |
10324 | stub_entry->target_section = code_sec; | |
10325 | } | |
10326 | else | |
10327 | { | |
10328 | stub_entry->target_value = sym_value; | |
10329 | stub_entry->target_section = sym_sec; | |
10330 | } | |
721956f4 | 10331 | stub_entry->h = hash; |
e054468f | 10332 | stub_entry->plt_ent = plt_ent; |
411e1bfb | 10333 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
10334 | |
10335 | if (stub_entry->h != NULL) | |
10336 | htab->stub_globals += 1; | |
721956f4 AM |
10337 | } |
10338 | ||
10339 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 10340 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 10341 | free (internal_relocs); |
721956f4 | 10342 | } |
6cdc0ccc AM |
10343 | |
10344 | if (local_syms != NULL | |
10345 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10346 | { | |
10347 | if (!info->keep_memory) | |
10348 | free (local_syms); | |
10349 | else | |
10350 | symtab_hdr->contents = (unsigned char *) local_syms; | |
10351 | } | |
721956f4 AM |
10352 | } |
10353 | ||
5c3dead3 | 10354 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
10355 | stub sections. */ |
10356 | for (stub_sec = htab->stub_bfd->sections; | |
10357 | stub_sec != NULL; | |
10358 | stub_sec = stub_sec->next) | |
e717da7e | 10359 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 10360 | { |
5c3dead3 | 10361 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
10362 | stub_sec->size = 0; |
10363 | stub_sec->reloc_count = 0; | |
84f5d08e | 10364 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 10365 | } |
eea6121a AM |
10366 | |
10367 | htab->brlt->size = 0; | |
84f5d08e AM |
10368 | htab->brlt->reloc_count = 0; |
10369 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 10370 | if (htab->relbrlt != NULL) |
eea6121a | 10371 | htab->relbrlt->size = 0; |
721956f4 | 10372 | |
63bc6f6c | 10373 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 10374 | |
176a0d42 AM |
10375 | if (info->emitrelocations |
10376 | && htab->glink != NULL && htab->glink->size != 0) | |
10377 | { | |
10378 | htab->glink->reloc_count = 1; | |
10379 | htab->glink->flags |= SEC_RELOC; | |
10380 | } | |
10381 | ||
5c3dead3 AM |
10382 | for (stub_sec = htab->stub_bfd->sections; |
10383 | stub_sec != NULL; | |
10384 | stub_sec = stub_sec->next) | |
10385 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
10386 | && stub_sec->rawsize != stub_sec->size) | |
10387 | break; | |
10388 | ||
10389 | /* Exit from this loop when no stubs have been added, and no stubs | |
10390 | have changed size. */ | |
10391 | if (stub_sec == NULL) | |
10392 | break; | |
10393 | ||
721956f4 AM |
10394 | /* Ask the linker to do its stuff. */ |
10395 | (*htab->layout_sections_again) (); | |
10396 | } | |
10397 | ||
c456f082 | 10398 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
10399 | section is empty, but it's too late. If we strip sections here, |
10400 | the dynamic symbol table is corrupted since the section symbol | |
10401 | for the stripped section isn't written. */ | |
721956f4 | 10402 | |
b34976b6 | 10403 | return TRUE; |
721956f4 AM |
10404 | } |
10405 | ||
10406 | /* Called after we have determined section placement. If sections | |
805fc799 | 10407 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 10408 | |
805fc799 | 10409 | bfd_vma |
4ce794b7 | 10410 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 10411 | { |
805fc799 AM |
10412 | asection *s; |
10413 | bfd_vma TOCstart; | |
721956f4 | 10414 | |
805fc799 AM |
10415 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
10416 | order. The TOC starts where the first of these sections starts. */ | |
10417 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 10418 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10419 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 10420 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10421 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 10422 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10423 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 10424 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
10425 | { |
10426 | /* This may happen for | |
10427 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
10428 | .toc directive | |
10429 | o bad linker script | |
10430 | o --gc-sections and empty TOC sections | |
10431 | ||
10432 | FIXME: Warn user? */ | |
10433 | ||
10434 | /* Look for a likely section. We probably won't even be | |
10435 | using TOCstart. */ | |
10436 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
10437 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
10438 | | SEC_EXCLUDE)) | |
805fc799 AM |
10439 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10440 | break; | |
721956f4 | 10441 | if (s == NULL) |
805fc799 | 10442 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10443 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
10444 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10445 | break; | |
721956f4 | 10446 | if (s == NULL) |
805fc799 | 10447 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
10448 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
10449 | == SEC_ALLOC) | |
805fc799 | 10450 | break; |
721956f4 | 10451 | if (s == NULL) |
805fc799 | 10452 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10453 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
10454 | break; |
10455 | } | |
721956f4 | 10456 | |
805fc799 AM |
10457 | TOCstart = 0; |
10458 | if (s != NULL) | |
10459 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 10460 | |
805fc799 | 10461 | return TOCstart; |
721956f4 AM |
10462 | } |
10463 | ||
10464 | /* Build all the stubs associated with the current output file. | |
10465 | The stubs are kept in a hash table attached to the main linker | |
10466 | hash table. This function is called via gldelf64ppc_finish. */ | |
10467 | ||
b34976b6 | 10468 | bfd_boolean |
4ce794b7 AM |
10469 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
10470 | struct bfd_link_info *info, | |
10471 | char **stats) | |
5d1634d7 AM |
10472 | { |
10473 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 10474 | asection *stub_sec; |
5d1634d7 | 10475 | bfd_byte *p; |
e717da7e | 10476 | int stub_sec_count = 0; |
5d1634d7 | 10477 | |
ad8e1ba5 | 10478 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
10479 | |
10480 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
10481 | for (stub_sec = htab->stub_bfd->sections; |
10482 | stub_sec != NULL; | |
10483 | stub_sec = stub_sec->next) | |
eea6121a AM |
10484 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
10485 | && stub_sec->size != 0) | |
e717da7e | 10486 | { |
eea6121a AM |
10487 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
10488 | if (stub_sec->contents == NULL) | |
10489 | return FALSE; | |
10490 | /* We want to check that built size is the same as calculated | |
10491 | size. rawsize is a convenient location to use. */ | |
10492 | stub_sec->rawsize = stub_sec->size; | |
10493 | stub_sec->size = 0; | |
e717da7e | 10494 | } |
5d1634d7 | 10495 | |
23eb7e01 | 10496 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 10497 | { |
9f951329 | 10498 | unsigned int indx; |
ad8e1ba5 | 10499 | bfd_vma plt0; |
9f951329 | 10500 | |
721956f4 | 10501 | /* Build the .glink plt call stub. */ |
97b639ba AM |
10502 | if (htab->emit_stub_syms) |
10503 | { | |
10504 | struct elf_link_hash_entry *h; | |
468392fb AM |
10505 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
10506 | TRUE, FALSE, FALSE); | |
97b639ba AM |
10507 | if (h == NULL) |
10508 | return FALSE; | |
10509 | if (h->root.type == bfd_link_hash_new) | |
10510 | { | |
10511 | h->root.type = bfd_link_hash_defined; | |
10512 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 10513 | h->root.u.def.value = 8; |
f5385ebf AM |
10514 | h->ref_regular = 1; |
10515 | h->def_regular = 1; | |
10516 | h->ref_regular_nonweak = 1; | |
10517 | h->forced_local = 1; | |
10518 | h->non_elf = 0; | |
97b639ba AM |
10519 | } |
10520 | } | |
176a0d42 AM |
10521 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
10522 | if (info->emitrelocations) | |
10523 | { | |
10524 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
10525 | if (r == NULL) | |
10526 | return FALSE; | |
10527 | r->r_offset = (htab->glink->output_offset | |
10528 | + htab->glink->output_section->vma); | |
10529 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
10530 | r->r_addend = plt0; | |
10531 | } | |
4ce794b7 | 10532 | p = htab->glink->contents; |
176a0d42 | 10533 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
10534 | bfd_put_64 (htab->glink->owner, plt0, p); |
10535 | p += 8; | |
10536 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 10537 | p += 4; |
ee4bf8d2 | 10538 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 10539 | p += 4; |
ee4bf8d2 | 10540 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 10541 | p += 4; |
ee4bf8d2 | 10542 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 10543 | p += 4; |
ee4bf8d2 | 10544 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 10545 | p += 4; |
ee4bf8d2 | 10546 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 10547 | p += 4; |
ee4bf8d2 | 10548 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 10549 | p += 4; |
4ce794b7 | 10550 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 10551 | p += 4; |
4ce794b7 | 10552 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 10553 | p += 4; |
4ce794b7 | 10554 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 10555 | p += 4; |
4ce794b7 | 10556 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 10557 | p += 4; |
ee4bf8d2 AM |
10558 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
10559 | { | |
10560 | bfd_put_32 (htab->glink->owner, NOP, p); | |
10561 | p += 4; | |
10562 | } | |
ad8e1ba5 | 10563 | |
9f951329 AM |
10564 | /* Build the .glink lazy link call stubs. */ |
10565 | indx = 0; | |
eea6121a | 10566 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
10567 | { |
10568 | if (indx < 0x8000) | |
10569 | { | |
4ce794b7 | 10570 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
10571 | p += 4; |
10572 | } | |
10573 | else | |
10574 | { | |
4ce794b7 | 10575 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 10576 | p += 4; |
4ce794b7 | 10577 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
10578 | p += 4; |
10579 | } | |
4ce794b7 | 10580 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 10581 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 10582 | indx++; |
9f951329 AM |
10583 | p += 4; |
10584 | } | |
eea6121a | 10585 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 10586 | } |
5d1634d7 | 10587 | |
eea6121a | 10588 | if (htab->brlt->size != 0) |
721956f4 | 10589 | { |
4ce794b7 | 10590 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 10591 | htab->brlt->size); |
4ce794b7 | 10592 | if (htab->brlt->contents == NULL) |
b34976b6 | 10593 | return FALSE; |
721956f4 | 10594 | } |
ee75fd95 | 10595 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
10596 | { |
10597 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 10598 | htab->relbrlt->size); |
63bc6f6c AM |
10599 | if (htab->relbrlt->contents == NULL) |
10600 | return FALSE; | |
10601 | } | |
5d1634d7 | 10602 | |
721956f4 AM |
10603 | /* Build the stubs as directed by the stub hash table. */ |
10604 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 10605 | |
aa8a7074 AM |
10606 | if (htab->relbrlt != NULL) |
10607 | htab->relbrlt->reloc_count = 0; | |
10608 | ||
721956f4 AM |
10609 | for (stub_sec = htab->stub_bfd->sections; |
10610 | stub_sec != NULL; | |
10611 | stub_sec = stub_sec->next) | |
e717da7e AM |
10612 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
10613 | { | |
10614 | stub_sec_count += 1; | |
eea6121a | 10615 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
10616 | break; |
10617 | } | |
5d1634d7 | 10618 | |
721956f4 | 10619 | if (stub_sec != NULL |
eea6121a | 10620 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 10621 | { |
b34976b6 | 10622 | htab->stub_error = TRUE; |
721956f4 | 10623 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 10624 | } |
721956f4 | 10625 | |
d2a300cf AM |
10626 | if (htab->stub_error) |
10627 | return FALSE; | |
10628 | ||
10629 | if (stats != NULL) | |
10630 | { | |
10631 | *stats = bfd_malloc (500); | |
10632 | if (*stats == NULL) | |
10633 | return FALSE; | |
10634 | ||
ee75fd95 | 10635 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
10636 | " branch %lu\n" |
10637 | " toc adjust %lu\n" | |
10638 | " long branch %lu\n" | |
10639 | " long toc adj %lu\n" | |
10640 | " plt call %lu"), | |
e717da7e | 10641 | stub_sec_count, |
ee75fd95 | 10642 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
10643 | htab->stub_count[ppc_stub_long_branch - 1], |
10644 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
10645 | htab->stub_count[ppc_stub_plt_branch - 1], | |
10646 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
10647 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
10648 | } |
10649 | return TRUE; | |
5bd4f169 AM |
10650 | } |
10651 | ||
99877b66 AM |
10652 | /* This function undoes the changes made by add_symbol_adjust. */ |
10653 | ||
10654 | static bfd_boolean | |
10655 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10656 | { | |
10657 | struct ppc_link_hash_entry *eh; | |
10658 | ||
10659 | if (h->root.type == bfd_link_hash_indirect) | |
10660 | return TRUE; | |
10661 | ||
10662 | if (h->root.type == bfd_link_hash_warning) | |
10663 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10664 | ||
10665 | eh = (struct ppc_link_hash_entry *) h; | |
10666 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
10667 | return TRUE; | |
10668 | ||
10669 | eh->elf.root.type = bfd_link_hash_undefined; | |
10670 | return TRUE; | |
10671 | } | |
10672 | ||
10673 | void | |
10674 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
10675 | { | |
10676 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10677 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
10678 | } | |
10679 | ||
60124e18 AM |
10680 | /* What to do when ld finds relocations against symbols defined in |
10681 | discarded sections. */ | |
10682 | ||
10683 | static unsigned int | |
10684 | ppc64_elf_action_discarded (asection *sec) | |
10685 | { | |
10686 | if (strcmp (".opd", sec->name) == 0) | |
10687 | return 0; | |
10688 | ||
10689 | if (strcmp (".toc", sec->name) == 0) | |
10690 | return 0; | |
10691 | ||
bce50a28 JJ |
10692 | if (strcmp (".toc1", sec->name) == 0) |
10693 | return 0; | |
10694 | ||
60124e18 AM |
10695 | return _bfd_elf_default_action_discarded (sec); |
10696 | } | |
10697 | ||
5bd4f169 AM |
10698 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
10699 | to handle the relocations for a section. | |
10700 | ||
10701 | The relocs are always passed as Rela structures; if the section | |
10702 | actually uses Rel structures, the r_addend field will always be | |
10703 | zero. | |
10704 | ||
10705 | This function is responsible for adjust the section contents as | |
10706 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 10707 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
10708 | necessary. |
10709 | ||
10710 | This function does not have to worry about setting the reloc | |
10711 | address or the reloc symbol index. | |
10712 | ||
10713 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
10714 | ||
10715 | LOCAL_SECTIONS is an array giving the section in the input file | |
10716 | corresponding to the st_shndx field of each local symbol. | |
10717 | ||
10718 | The global hash table entry for the global symbols can be found | |
10719 | via elf_sym_hashes (input_bfd). | |
10720 | ||
1049f94e | 10721 | When generating relocatable output, this function must handle |
5bd4f169 AM |
10722 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
10723 | going to be the section symbol corresponding to the output | |
10724 | section, which means that the addend must be adjusted | |
10725 | accordingly. */ | |
10726 | ||
b34976b6 | 10727 | static bfd_boolean |
4ce794b7 AM |
10728 | ppc64_elf_relocate_section (bfd *output_bfd, |
10729 | struct bfd_link_info *info, | |
10730 | bfd *input_bfd, | |
10731 | asection *input_section, | |
10732 | bfd_byte *contents, | |
10733 | Elf_Internal_Rela *relocs, | |
10734 | Elf_Internal_Sym *local_syms, | |
10735 | asection **local_sections) | |
5bd4f169 | 10736 | { |
65f38f15 | 10737 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
10738 | Elf_Internal_Shdr *symtab_hdr; |
10739 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
10740 | Elf_Internal_Rela *rel; |
10741 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
10742 | Elf_Internal_Rela outrel; |
10743 | bfd_byte *loc; | |
411e1bfb | 10744 | struct got_entry **local_got_ents; |
5bd4f169 | 10745 | bfd_vma TOCstart; |
b34976b6 AM |
10746 | bfd_boolean ret = TRUE; |
10747 | bfd_boolean is_opd; | |
96e0dda4 | 10748 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 10749 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 10750 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 10751 | |
65f38f15 | 10752 | /* Initialize howto table if needed. */ |
5bd4f169 | 10753 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
10754 | ppc_howto_init (); |
10755 | ||
65f38f15 | 10756 | htab = ppc_hash_table (info); |
ee75fd95 AM |
10757 | |
10758 | /* Don't relocate stub sections. */ | |
10759 | if (input_section->owner == htab->stub_bfd) | |
10760 | return TRUE; | |
10761 | ||
0c8d6e5c | 10762 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 10763 | |
411e1bfb | 10764 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 10765 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 10766 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 10767 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 10768 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 10769 | |
5bd4f169 AM |
10770 | rel = relocs; |
10771 | relend = relocs + input_section->reloc_count; | |
10772 | for (; rel < relend; rel++) | |
10773 | { | |
04c9666a | 10774 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 10775 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
10776 | bfd_reloc_status_type r; |
10777 | Elf_Internal_Sym *sym; | |
10778 | asection *sec; | |
039b3fef AM |
10779 | struct elf_link_hash_entry *h_elf; |
10780 | struct ppc_link_hash_entry *h; | |
10781 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 10782 | const char *sym_name; |
0d4792f7 | 10783 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 10784 | bfd_vma toc_addend; |
951fd09b | 10785 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 10786 | char sym_type; |
5bd4f169 | 10787 | bfd_vma relocation; |
b34976b6 AM |
10788 | bfd_boolean unresolved_reloc; |
10789 | bfd_boolean warned; | |
50bc7936 | 10790 | unsigned long insn, mask; |
721956f4 AM |
10791 | struct ppc_stub_hash_entry *stub_entry; |
10792 | bfd_vma max_br_offset; | |
10793 | bfd_vma from; | |
5bd4f169 | 10794 | |
4ce794b7 | 10795 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 10796 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
10797 | |
10798 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10799 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10800 | proper TOC base to use. */ | |
10801 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10802 | && rel != relocs | |
10803 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10804 | && is_opd) | |
10805 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10806 | ||
4ce794b7 AM |
10807 | sym = NULL; |
10808 | sec = NULL; | |
039b3fef | 10809 | h_elf = NULL; |
4ce794b7 | 10810 | sym_name = NULL; |
b34976b6 AM |
10811 | unresolved_reloc = FALSE; |
10812 | warned = FALSE; | |
4cc603a5 | 10813 | orig_addend = rel->r_addend; |
65f38f15 | 10814 | |
0b13192e | 10815 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10816 | { |
10817 | /* It's a local symbol. */ | |
74f0fb50 | 10818 | struct _opd_sec_data *opd; |
4025353c | 10819 | |
5bd4f169 AM |
10820 | sym = local_syms + r_symndx; |
10821 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10822 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10823 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10824 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
10825 | opd = get_opd_info (sec); |
10826 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 10827 | { |
74f0fb50 | 10828 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10829 | if (adjust == -1) |
10830 | relocation = 0; | |
10831 | else | |
4cc603a5 AM |
10832 | { |
10833 | /* If this is a relocation against the opd section sym | |
10834 | and we have edited .opd, adjust the reloc addend so | |
10835 | that ld -r and ld --emit-relocs output is correct. | |
10836 | If it is a reloc against some other .opd symbol, | |
10837 | then the symbol value will be adjusted later. */ | |
10838 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10839 | rel->r_addend += adjust; | |
10840 | else | |
10841 | relocation += adjust; | |
10842 | } | |
1e2f5b6e | 10843 | } |
5bd4f169 AM |
10844 | } |
10845 | else | |
10846 | { | |
b2a8e766 AM |
10847 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10848 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10849 | h_elf, sec, relocation, |
b2a8e766 | 10850 | unresolved_reloc, warned); |
039b3fef AM |
10851 | sym_name = h_elf->root.root.string; |
10852 | sym_type = h_elf->type; | |
5bd4f169 | 10853 | } |
039b3fef | 10854 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10855 | |
ab96bf03 AM |
10856 | if (sec != NULL && elf_discarded_section (sec)) |
10857 | { | |
10858 | /* For relocs against symbols from removed linkonce sections, | |
10859 | or sections discarded by a linker script, we just want the | |
10860 | section contents zeroed. Avoid any special processing. */ | |
10861 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10862 | contents + rel->r_offset); | |
10863 | rel->r_info = 0; | |
10864 | rel->r_addend = 0; | |
10865 | continue; | |
10866 | } | |
10867 | ||
10868 | if (info->relocatable) | |
10869 | continue; | |
10870 | ||
951fd09b AM |
10871 | /* TLS optimizations. Replace instruction sequences and relocs |
10872 | based on information we collected in tls_optimize. We edit | |
10873 | RELOCS so that --emit-relocs will output something sensible | |
10874 | for the final instruction stream. */ | |
10875 | tls_mask = 0; | |
10876 | tls_gd = 0; | |
0d4792f7 | 10877 | toc_symndx = 0; |
727fc41e AM |
10878 | if (h != NULL) |
10879 | tls_mask = h->tls_mask; | |
10880 | else if (local_got_ents != NULL) | |
411e1bfb | 10881 | { |
e054468f AM |
10882 | struct plt_entry **local_plt = (struct plt_entry **) |
10883 | (local_got_ents + symtab_hdr->sh_info); | |
10884 | char *lgot_masks = (char *) | |
10885 | (local_plt + symtab_hdr->sh_info); | |
727fc41e AM |
10886 | tls_mask = lgot_masks[r_symndx]; |
10887 | } | |
10888 | if (tls_mask == 0 | |
10889 | && (r_type == R_PPC64_TLS | |
10890 | || r_type == R_PPC64_TLSGD | |
10891 | || r_type == R_PPC64_TLSLD)) | |
10892 | { | |
10893 | /* Check for toc tls entries. */ | |
10894 | char *toc_tls; | |
0d4792f7 | 10895 | |
727fc41e AM |
10896 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10897 | &local_syms, rel, input_bfd)) | |
10898 | return FALSE; | |
0d4792f7 | 10899 | |
727fc41e AM |
10900 | if (toc_tls) |
10901 | tls_mask = *toc_tls; | |
0d4792f7 AM |
10902 | } |
10903 | ||
10904 | /* Check that tls relocs are used with tls syms, and non-tls | |
10905 | relocs are used with non-tls syms. */ | |
10906 | if (r_symndx != 0 | |
10907 | && r_type != R_PPC64_NONE | |
10908 | && (h == NULL | |
039b3fef AM |
10909 | || h->elf.root.type == bfd_link_hash_defined |
10910 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
10911 | && (IS_PPC64_TLS_RELOC (r_type) |
10912 | != (sym_type == STT_TLS | |
10913 | || (sym_type == STT_SECTION | |
10914 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 10915 | { |
727fc41e AM |
10916 | if (tls_mask != 0 |
10917 | && (r_type == R_PPC64_TLS | |
10918 | || r_type == R_PPC64_TLSGD | |
10919 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
10920 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
10921 | ; | |
10922 | else | |
10923 | (*_bfd_error_handler) | |
1d483afe | 10924 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
10925 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10926 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10927 | input_bfd, | |
10928 | input_section, | |
0d4792f7 AM |
10929 | (long) rel->r_offset, |
10930 | ppc64_elf_howto_table[r_type]->name, | |
10931 | sym_name); | |
411e1bfb AM |
10932 | } |
10933 | ||
10934 | /* Ensure reloc mapping code below stays sane. */ | |
10935 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10936 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10937 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10938 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10939 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10940 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10941 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10942 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10943 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10944 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10945 | abort (); | |
0d4792f7 | 10946 | |
411e1bfb AM |
10947 | switch (r_type) |
10948 | { | |
10949 | default: | |
411e1bfb AM |
10950 | break; |
10951 | ||
10952 | case R_PPC64_TOC16: | |
10953 | case R_PPC64_TOC16_LO: | |
10954 | case R_PPC64_TOC16_DS: | |
10955 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10956 | { |
10957 | /* Check for toc tls entries. */ | |
10958 | char *toc_tls; | |
951fd09b | 10959 | int retval; |
411e1bfb | 10960 | |
3a71aa26 AM |
10961 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10962 | &local_syms, rel, input_bfd); | |
951fd09b | 10963 | if (retval == 0) |
411e1bfb AM |
10964 | return FALSE; |
10965 | ||
10966 | if (toc_tls) | |
10967 | { | |
951fd09b | 10968 | tls_mask = *toc_tls; |
411e1bfb AM |
10969 | if (r_type == R_PPC64_TOC16_DS |
10970 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10971 | { |
10972 | if (tls_mask != 0 | |
10973 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10974 | goto toctprel; | |
10975 | } | |
411e1bfb | 10976 | else |
951fd09b AM |
10977 | { |
10978 | /* If we found a GD reloc pair, then we might be | |
10979 | doing a GD->IE transition. */ | |
10980 | if (retval == 2) | |
10981 | { | |
10982 | tls_gd = TLS_TPRELGD; | |
10983 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10984 | goto tls_ldgd_opt; |
951fd09b AM |
10985 | } |
10986 | else if (retval == 3) | |
10987 | { | |
10988 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10989 | goto tls_ldgd_opt; |
951fd09b AM |
10990 | } |
10991 | } | |
411e1bfb AM |
10992 | } |
10993 | } | |
10994 | break; | |
10995 | ||
10996 | case R_PPC64_GOT_TPREL16_DS: | |
10997 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10998 | if (tls_mask != 0 |
10999 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11000 | { |
81407a69 | 11001 | toctprel: |
4fe5ca5b | 11002 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
11003 | insn &= 31 << 21; |
11004 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 11005 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 11006 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
11007 | if (toc_symndx != 0) |
11008 | { | |
11009 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11010 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11011 | /* We changed the symbol. Start over in order to |
11012 | get h, sym, sec etc. right. */ | |
11013 | rel--; | |
11014 | continue; | |
11015 | } | |
11016 | else | |
11017 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11018 | } |
11019 | break; | |
11020 | ||
11021 | case R_PPC64_TLS: | |
951fd09b AM |
11022 | if (tls_mask != 0 |
11023 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11024 | { |
411e1bfb | 11025 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
11026 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
11027 | if (insn == 0) | |
411e1bfb | 11028 | abort (); |
411e1bfb | 11029 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 11030 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
11031 | PPC64_TPREL16_LO which is at low-order half-word. */ |
11032 | rel->r_offset += d_offset; | |
0d4792f7 AM |
11033 | r_type = R_PPC64_TPREL16_LO; |
11034 | if (toc_symndx != 0) | |
11035 | { | |
11036 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11037 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11038 | /* We changed the symbol. Start over in order to |
11039 | get h, sym, sec etc. right. */ | |
11040 | rel--; | |
11041 | continue; | |
11042 | } | |
11043 | else | |
11044 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11045 | } |
11046 | break; | |
11047 | ||
411e1bfb AM |
11048 | case R_PPC64_GOT_TLSGD16_HI: |
11049 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
11050 | tls_gd = TLS_TPRELGD; |
11051 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11052 | goto tls_gdld_hi; | |
11053 | break; | |
11054 | ||
411e1bfb AM |
11055 | case R_PPC64_GOT_TLSLD16_HI: |
11056 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11057 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 11058 | { |
951fd09b AM |
11059 | tls_gdld_hi: |
11060 | if ((tls_mask & tls_gd) != 0) | |
11061 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11062 | + R_PPC64_GOT_TPREL16_DS); | |
11063 | else | |
411e1bfb | 11064 | { |
951fd09b | 11065 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 11066 | rel->r_offset -= d_offset; |
951fd09b | 11067 | r_type = R_PPC64_NONE; |
411e1bfb | 11068 | } |
951fd09b | 11069 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
11070 | } |
11071 | break; | |
11072 | ||
951fd09b AM |
11073 | case R_PPC64_GOT_TLSGD16: |
11074 | case R_PPC64_GOT_TLSGD16_LO: | |
11075 | tls_gd = TLS_TPRELGD; | |
11076 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 11077 | goto tls_ldgd_opt; |
951fd09b | 11078 | break; |
411e1bfb | 11079 | |
951fd09b AM |
11080 | case R_PPC64_GOT_TLSLD16: |
11081 | case R_PPC64_GOT_TLSLD16_LO: | |
11082 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
11083 | { | |
3a71aa26 | 11084 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
11085 | bfd_vma offset; |
11086 | ||
11087 | tls_ldgd_opt: | |
727fc41e AM |
11088 | offset = (bfd_vma) -1; |
11089 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
11090 | __tls_get_addr calls, we must trust that the call | |
11091 | stays with its arg setup insns, ie. that the next | |
11092 | reloc is the __tls_get_addr call associated with | |
11093 | the current reloc. Edit both insns. */ | |
11094 | if (input_section->has_tls_get_addr_call | |
11095 | && rel + 1 < relend | |
11096 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
11097 | htab->tls_get_addr, | |
11098 | htab->tls_get_addr_fd)) | |
11099 | offset = rel[1].r_offset; | |
102890f0 | 11100 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 11101 | { |
102890f0 | 11102 | /* IE */ |
3a71aa26 AM |
11103 | insn1 = bfd_get_32 (output_bfd, |
11104 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
11105 | insn1 &= (1 << 26) - (1 << 2); |
11106 | insn1 |= 58 << 26; /* ld */ | |
11107 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 11108 | if (offset != (bfd_vma) -1) |
f58d5a2d | 11109 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
11110 | if ((tls_mask & TLS_EXPLICIT) == 0) |
11111 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11112 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 11113 | else |
102890f0 AM |
11114 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
11115 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11116 | } | |
11117 | else | |
11118 | { | |
11119 | /* LE */ | |
11120 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
11121 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11122 | if (tls_gd == 0) | |
951fd09b | 11123 | { |
102890f0 | 11124 | /* Was an LD reloc. */ |
1d483afe AM |
11125 | if (toc_symndx) |
11126 | sec = local_sections[toc_symndx]; | |
11127 | for (r_symndx = 0; | |
11128 | r_symndx < symtab_hdr->sh_info; | |
11129 | r_symndx++) | |
11130 | if (local_sections[r_symndx] == sec) | |
11131 | break; | |
11132 | if (r_symndx >= symtab_hdr->sh_info) | |
11133 | r_symndx = 0; | |
102890f0 | 11134 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
11135 | if (r_symndx != 0) |
11136 | rel->r_addend -= (local_syms[r_symndx].st_value | |
11137 | + sec->output_offset | |
11138 | + sec->output_section->vma); | |
951fd09b | 11139 | } |
102890f0 | 11140 | else if (toc_symndx != 0) |
3a71aa26 AM |
11141 | { |
11142 | r_symndx = toc_symndx; | |
11143 | rel->r_addend = toc_addend; | |
11144 | } | |
102890f0 AM |
11145 | r_type = R_PPC64_TPREL16_HA; |
11146 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
11147 | if (offset != (bfd_vma) -1) |
11148 | { | |
11149 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
11150 | R_PPC64_TPREL16_LO); | |
11151 | rel[1].r_offset = offset + d_offset; | |
11152 | rel[1].r_addend = rel->r_addend; | |
11153 | } | |
102890f0 | 11154 | } |
3a71aa26 AM |
11155 | bfd_put_32 (output_bfd, insn1, |
11156 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
11157 | if (offset != (bfd_vma) -1) |
11158 | { | |
11159 | insn3 = bfd_get_32 (output_bfd, | |
11160 | contents + offset + 4); | |
11161 | if (insn3 == NOP | |
11162 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11163 | { | |
11164 | rel[1].r_offset += 4; | |
11165 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11166 | insn2 = NOP; | |
11167 | } | |
11168 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11169 | } | |
11170 | if ((tls_mask & tls_gd) == 0 | |
11171 | && (tls_gd == 0 || toc_symndx != 0)) | |
11172 | { | |
11173 | /* We changed the symbol. Start over in order | |
11174 | to get h, sym, sec etc. right. */ | |
11175 | rel--; | |
11176 | continue; | |
11177 | } | |
11178 | } | |
11179 | break; | |
11180 | ||
11181 | case R_PPC64_TLSGD: | |
11182 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11183 | { | |
11184 | unsigned int insn2, insn3; | |
11185 | bfd_vma offset = rel->r_offset; | |
11186 | ||
11187 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11188 | { | |
11189 | /* IE */ | |
11190 | r_type = R_PPC64_NONE; | |
11191 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
11192 | } | |
11193 | else | |
11194 | { | |
11195 | /* LE */ | |
11196 | if (toc_symndx != 0) | |
11197 | { | |
11198 | r_symndx = toc_symndx; | |
11199 | rel->r_addend = toc_addend; | |
11200 | } | |
11201 | r_type = R_PPC64_TPREL16_LO; | |
11202 | rel->r_offset = offset + d_offset; | |
11203 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11204 | } | |
11205 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11206 | /* Zap the reloc on the _tls_get_addr call too. */ | |
11207 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 11208 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
11209 | insn3 = bfd_get_32 (output_bfd, |
11210 | contents + offset + 4); | |
102890f0 AM |
11211 | if (insn3 == NOP |
11212 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11213 | { | |
727fc41e | 11214 | rel->r_offset += 4; |
3a71aa26 AM |
11215 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
11216 | insn2 = NOP; | |
102890f0 | 11217 | } |
102890f0 | 11218 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 11219 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 11220 | { |
102890f0 AM |
11221 | rel--; |
11222 | continue; | |
411e1bfb | 11223 | } |
411e1bfb | 11224 | } |
411e1bfb AM |
11225 | break; |
11226 | ||
727fc41e AM |
11227 | case R_PPC64_TLSLD: |
11228 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
11229 | { | |
11230 | unsigned int insn2, insn3; | |
11231 | bfd_vma offset = rel->r_offset; | |
11232 | ||
11233 | if (toc_symndx) | |
11234 | sec = local_sections[toc_symndx]; | |
11235 | for (r_symndx = 0; | |
11236 | r_symndx < symtab_hdr->sh_info; | |
11237 | r_symndx++) | |
11238 | if (local_sections[r_symndx] == sec) | |
11239 | break; | |
11240 | if (r_symndx >= symtab_hdr->sh_info) | |
11241 | r_symndx = 0; | |
11242 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
11243 | if (r_symndx != 0) | |
11244 | rel->r_addend -= (local_syms[r_symndx].st_value | |
11245 | + sec->output_offset | |
11246 | + sec->output_section->vma); | |
11247 | ||
11248 | r_type = R_PPC64_TPREL16_LO; | |
11249 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11250 | rel->r_offset = offset + d_offset; | |
11251 | /* Zap the reloc on the _tls_get_addr call too. */ | |
11252 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 11253 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
11254 | insn2 = 0x38630000; /* addi 3,3,0 */ |
11255 | insn3 = bfd_get_32 (output_bfd, | |
11256 | contents + offset + 4); | |
11257 | if (insn3 == NOP | |
11258 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11259 | { | |
11260 | rel->r_offset += 4; | |
11261 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11262 | insn2 = NOP; | |
11263 | } | |
11264 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11265 | rel--; | |
11266 | continue; | |
11267 | } | |
11268 | break; | |
11269 | ||
411e1bfb | 11270 | case R_PPC64_DTPMOD64: |
951fd09b AM |
11271 | if (rel + 1 < relend |
11272 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
11273 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 11274 | { |
951fd09b AM |
11275 | if ((tls_mask & TLS_GD) == 0) |
11276 | { | |
11277 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
11278 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11279 | r_type = R_PPC64_TPREL64; | |
11280 | else | |
11281 | { | |
4ce794b7 | 11282 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
11283 | r_type = R_PPC64_NONE; |
11284 | } | |
11285 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11286 | } | |
11287 | } | |
11288 | else | |
11289 | { | |
11290 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 11291 | { |
4ce794b7 | 11292 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 11293 | r_type = R_PPC64_NONE; |
951fd09b | 11294 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 11295 | } |
411e1bfb AM |
11296 | } |
11297 | break; | |
11298 | ||
11299 | case R_PPC64_TPREL64: | |
951fd09b | 11300 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
11301 | { |
11302 | r_type = R_PPC64_NONE; | |
11303 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11304 | } | |
11305 | break; | |
11306 | } | |
11307 | ||
11308 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 11309 | insn = 0; |
b25116a9 AM |
11310 | max_br_offset = 1 << 25; |
11311 | addend = rel->r_addend; | |
65f38f15 | 11312 | switch (r_type) |
5bd4f169 AM |
11313 | { |
11314 | default: | |
65f38f15 | 11315 | break; |
5bd4f169 | 11316 | |
65f38f15 AM |
11317 | /* Branch taken prediction relocations. */ |
11318 | case R_PPC64_ADDR14_BRTAKEN: | |
11319 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
11320 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
11321 | /* Fall thru. */ | |
65f38f15 | 11322 | |
86c76c7b | 11323 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
11324 | case R_PPC64_ADDR14_BRNTAKEN: |
11325 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
11326 | insn |= bfd_get_32 (output_bfd, |
11327 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 11328 | /* Fall thru. */ |
86c76c7b | 11329 | |
b25116a9 AM |
11330 | case R_PPC64_REL14: |
11331 | max_br_offset = 1 << 15; | |
11332 | /* Fall thru. */ | |
5bd4f169 | 11333 | |
65f38f15 | 11334 | case R_PPC64_REL24: |
ad8e1ba5 AM |
11335 | /* Calls to functions with a different TOC, such as calls to |
11336 | shared objects, need to alter the TOC pointer. This is | |
11337 | done using a linkage stub. A REL24 branching to these | |
11338 | linkage stubs needs to be followed by a nop, as the nop | |
11339 | will be replaced with an instruction to restore the TOC | |
11340 | base pointer. */ | |
b25116a9 | 11341 | stub_entry = NULL; |
8387904d | 11342 | fdh = h; |
b31867b6 AM |
11343 | if (h != NULL |
11344 | && h->oh != NULL | |
11345 | && h->oh->is_func_descriptor) | |
11346 | fdh = ppc_follow_link (h->oh); | |
11347 | if (((fdh != NULL | |
11348 | && fdh->elf.plt.plist != NULL) | |
8387904d | 11349 | || (sec != NULL |
ad8e1ba5 | 11350 | && sec->output_section != NULL |
b25116a9 | 11351 | && sec->id <= htab->top_id |
ad8e1ba5 | 11352 | && (htab->stub_group[sec->id].toc_off |
25f23106 AM |
11353 | != htab->stub_group[input_section->id].toc_off)) |
11354 | || (h == NULL | |
11355 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
721956f4 | 11356 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
11357 | rel, htab)) != NULL |
11358 | && (stub_entry->stub_type == ppc_stub_plt_call | |
11359 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
11360 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 11361 | { |
b25116a9 | 11362 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 11363 | |
eea6121a | 11364 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 11365 | { |
b25116a9 AM |
11366 | unsigned long nop; |
11367 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
11368 | if (nop == NOP | |
11369 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 11370 | { |
a7f2871e AM |
11371 | if (h != NULL |
11372 | && (h == htab->tls_get_addr_fd | |
11373 | || h == htab->tls_get_addr) | |
11374 | && !htab->no_tls_get_addr_opt) | |
11375 | { | |
11376 | /* Special stub used, leave nop alone. */ | |
11377 | } | |
11378 | else | |
11379 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
11380 | contents + rel->r_offset + 4); | |
b25116a9 | 11381 | can_plt_call = TRUE; |
41bd81ab | 11382 | } |
5bd4f169 | 11383 | } |
721956f4 AM |
11384 | |
11385 | if (!can_plt_call) | |
11386 | { | |
ad8e1ba5 AM |
11387 | if (stub_entry->stub_type == ppc_stub_plt_call) |
11388 | { | |
11389 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
11390 | and link, don't require a nop. However, don't |
11391 | allow tail calls in a shared library as they | |
11392 | will result in r2 being corrupted. */ | |
b25116a9 AM |
11393 | unsigned long br; |
11394 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 11395 | if (info->executable && (br & 1) == 0) |
b25116a9 | 11396 | can_plt_call = TRUE; |
15b552e9 AM |
11397 | else |
11398 | stub_entry = NULL; | |
ad8e1ba5 | 11399 | } |
6ab189d5 | 11400 | else if (h != NULL |
039b3fef | 11401 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
11402 | ".__libc_start_main") == 0) |
11403 | { | |
11404 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 11405 | can_plt_call = TRUE; |
6ab189d5 | 11406 | } |
ad8e1ba5 AM |
11407 | else |
11408 | { | |
11409 | if (strcmp (input_section->output_section->name, | |
11410 | ".init") == 0 | |
11411 | || strcmp (input_section->output_section->name, | |
11412 | ".fini") == 0) | |
11413 | (*_bfd_error_handler) | |
d003868e | 11414 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
11415 | "not supported using your crt files; " |
11416 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
11417 | input_bfd, |
11418 | input_section, | |
ad8e1ba5 AM |
11419 | (long) rel->r_offset); |
11420 | else | |
11421 | (*_bfd_error_handler) | |
d003868e | 11422 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
11423 | "does not allow automatic multiple TOCs; " |
11424 | "recompile with -mminimal-toc or " | |
11425 | "-fno-optimize-sibling-calls, " | |
11426 | "or make `%s' extern"), | |
d003868e AM |
11427 | input_bfd, |
11428 | input_section, | |
ad8e1ba5 AM |
11429 | (long) rel->r_offset, |
11430 | sym_name, | |
11431 | sym_name); | |
11432 | bfd_set_error (bfd_error_bad_value); | |
11433 | ret = FALSE; | |
11434 | } | |
721956f4 AM |
11435 | } |
11436 | ||
b25116a9 AM |
11437 | if (can_plt_call |
11438 | && stub_entry->stub_type == ppc_stub_plt_call) | |
11439 | unresolved_reloc = FALSE; | |
11440 | } | |
11441 | ||
8387904d AM |
11442 | if (stub_entry == NULL |
11443 | && get_opd_info (sec) != NULL) | |
11444 | { | |
11445 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
11446 | bfd_vma off = (relocation + addend |
11447 | - sec->output_section->vma | |
11448 | - sec->output_offset); | |
8387904d AM |
11449 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
11450 | if (dest != (bfd_vma) -1) | |
11451 | { | |
11452 | relocation = dest; | |
11453 | addend = 0; | |
11454 | } | |
11455 | } | |
11456 | ||
b25116a9 AM |
11457 | /* If the branch is out of reach we ought to have a long |
11458 | branch stub. */ | |
11459 | from = (rel->r_offset | |
11460 | + input_section->output_offset | |
11461 | + input_section->output_section->vma); | |
11462 | ||
11463 | if (stub_entry == NULL | |
4cc603a5 | 11464 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
11465 | >= 2 * max_br_offset) |
11466 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
11467 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
11468 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
11469 | htab); | |
b25116a9 AM |
11470 | |
11471 | if (stub_entry != NULL) | |
11472 | { | |
11473 | /* Munge up the value and addend so that we call the stub | |
11474 | rather than the procedure directly. */ | |
11475 | relocation = (stub_entry->stub_offset | |
11476 | + stub_entry->stub_sec->output_offset | |
11477 | + stub_entry->stub_sec->output_section->vma); | |
11478 | addend = 0; | |
11479 | } | |
11480 | ||
11481 | if (insn != 0) | |
11482 | { | |
11483 | if (is_power4) | |
721956f4 | 11484 | { |
b25116a9 AM |
11485 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
11486 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
11487 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
11488 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
11489 | insn |= 0x02 << 21; | |
11490 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
11491 | insn |= 0x08 << 21; | |
11492 | else | |
11493 | break; | |
11494 | } | |
11495 | else | |
11496 | { | |
11497 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 11498 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 11499 | insn ^= 0x01 << 21; |
721956f4 | 11500 | } |
b25116a9 AM |
11501 | |
11502 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 11503 | } |
e86ce104 | 11504 | |
06da1e8e AM |
11505 | /* NOP out calls to undefined weak functions. |
11506 | We can thus call a weak function without first | |
11507 | checking whether the function is defined. */ | |
b25116a9 | 11508 | else if (h != NULL |
039b3fef | 11509 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 11510 | && h->elf.dynindx == -1 |
b25116a9 AM |
11511 | && r_type == R_PPC64_REL24 |
11512 | && relocation == 0 | |
4cc603a5 | 11513 | && addend == 0) |
e86ce104 | 11514 | { |
06da1e8e AM |
11515 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
11516 | continue; | |
e86ce104 | 11517 | } |
65f38f15 AM |
11518 | break; |
11519 | } | |
5bd4f169 | 11520 | |
65f38f15 | 11521 | /* Set `addend'. */ |
411e1bfb | 11522 | tls_type = 0; |
65f38f15 AM |
11523 | switch (r_type) |
11524 | { | |
11525 | default: | |
11526 | (*_bfd_error_handler) | |
d003868e AM |
11527 | (_("%B: unknown relocation type %d for symbol %s"), |
11528 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 11529 | |
65f38f15 | 11530 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11531 | ret = FALSE; |
65f38f15 | 11532 | continue; |
5bd4f169 | 11533 | |
65f38f15 | 11534 | case R_PPC64_NONE: |
411e1bfb | 11535 | case R_PPC64_TLS: |
727fc41e AM |
11536 | case R_PPC64_TLSGD: |
11537 | case R_PPC64_TLSLD: | |
04c9666a AM |
11538 | case R_PPC64_GNU_VTINHERIT: |
11539 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 11540 | continue; |
5bd4f169 AM |
11541 | |
11542 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
11543 | address in the GOT as relocation value instead of the | |
411e1bfb | 11544 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 11545 | symbol and put the symbol value there. */ |
411e1bfb AM |
11546 | case R_PPC64_GOT_TLSGD16: |
11547 | case R_PPC64_GOT_TLSGD16_LO: | |
11548 | case R_PPC64_GOT_TLSGD16_HI: | |
11549 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 11550 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
11551 | goto dogot; |
11552 | ||
11553 | case R_PPC64_GOT_TLSLD16: | |
11554 | case R_PPC64_GOT_TLSLD16_LO: | |
11555 | case R_PPC64_GOT_TLSLD16_HI: | |
11556 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11557 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
11558 | goto dogot; |
11559 | ||
11560 | case R_PPC64_GOT_TPREL16_DS: | |
11561 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11562 | case R_PPC64_GOT_TPREL16_HI: | |
11563 | case R_PPC64_GOT_TPREL16_HA: | |
11564 | tls_type = TLS_TLS | TLS_TPREL; | |
11565 | goto dogot; | |
11566 | ||
11567 | case R_PPC64_GOT_DTPREL16_DS: | |
11568 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11569 | case R_PPC64_GOT_DTPREL16_HI: | |
11570 | case R_PPC64_GOT_DTPREL16_HA: | |
11571 | tls_type = TLS_TLS | TLS_DTPREL; | |
11572 | goto dogot; | |
11573 | ||
65f38f15 AM |
11574 | case R_PPC64_GOT16: |
11575 | case R_PPC64_GOT16_LO: | |
11576 | case R_PPC64_GOT16_HI: | |
11577 | case R_PPC64_GOT16_HA: | |
11578 | case R_PPC64_GOT16_DS: | |
11579 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 11580 | dogot: |
5bd4f169 AM |
11581 | { |
11582 | /* Relocation is to the entry for this symbol in the global | |
11583 | offset table. */ | |
e717da7e | 11584 | asection *got; |
d881513a | 11585 | bfd_vma *offp; |
5bd4f169 | 11586 | bfd_vma off; |
d881513a | 11587 | unsigned long indx = 0; |
65f38f15 | 11588 | |
d881513a AM |
11589 | if (tls_type == (TLS_TLS | TLS_LD) |
11590 | && (h == NULL | |
f5385ebf | 11591 | || !h->elf.def_dynamic)) |
e717da7e | 11592 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 11593 | else |
5bd4f169 | 11594 | { |
d881513a | 11595 | struct got_entry *ent; |
5bd4f169 | 11596 | |
d881513a AM |
11597 | if (h != NULL) |
11598 | { | |
11599 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
11600 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
11601 | &h->elf) | |
d881513a | 11602 | || (info->shared |
039b3fef | 11603 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
11604 | /* This is actually a static link, or it is a |
11605 | -Bsymbolic link and the symbol is defined | |
11606 | locally, or the symbol was forced to be local | |
11607 | because of a version file. */ | |
11608 | ; | |
11609 | else | |
11610 | { | |
039b3fef | 11611 | indx = h->elf.dynindx; |
d881513a AM |
11612 | unresolved_reloc = FALSE; |
11613 | } | |
039b3fef | 11614 | ent = h->elf.got.glist; |
d881513a | 11615 | } |
411e1bfb | 11616 | else |
5bd4f169 | 11617 | { |
d881513a AM |
11618 | if (local_got_ents == NULL) |
11619 | abort (); | |
11620 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 11621 | } |
d881513a AM |
11622 | |
11623 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 11624 | if (ent->addend == orig_addend |
e717da7e | 11625 | && ent->owner == input_bfd |
d881513a AM |
11626 | && ent->tls_type == tls_type) |
11627 | break; | |
11628 | if (ent == NULL) | |
11629 | abort (); | |
11630 | offp = &ent->got.offset; | |
5bd4f169 | 11631 | } |
411e1bfb | 11632 | |
e717da7e AM |
11633 | got = ppc64_elf_tdata (input_bfd)->got; |
11634 | if (got == NULL) | |
11635 | abort (); | |
11636 | ||
411e1bfb AM |
11637 | /* The offset must always be a multiple of 8. We use the |
11638 | least significant bit to record whether we have already | |
11639 | processed this entry. */ | |
d881513a | 11640 | off = *offp; |
411e1bfb AM |
11641 | if ((off & 1) != 0) |
11642 | off &= ~1; | |
5bd4f169 AM |
11643 | else |
11644 | { | |
411e1bfb AM |
11645 | /* Generate relocs for the dynamic linker, except in |
11646 | the case of TLSLD where we'll use one entry per | |
11647 | module. */ | |
25f23106 AM |
11648 | asection *relgot; |
11649 | bfd_boolean ifunc; | |
e717da7e | 11650 | |
d881513a | 11651 | *offp = off | 1; |
25f23106 AM |
11652 | relgot = NULL; |
11653 | ifunc = (h != NULL | |
11654 | ? h->elf.type == STT_GNU_IFUNC | |
11655 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
4e795f50 | 11656 | if ((info->shared || indx != 0) |
3a71aa26 AM |
11657 | && (offp == &ppc64_tlsld_got (input_bfd)->offset |
11658 | || h == NULL | |
039b3fef AM |
11659 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11660 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
25f23106 AM |
11661 | relgot = ppc64_elf_tdata (input_bfd)->relgot; |
11662 | else if (ifunc) | |
11663 | relgot = htab->reliplt; | |
11664 | if (relgot != NULL) | |
5bd4f169 | 11665 | { |
e717da7e AM |
11666 | outrel.r_offset = (got->output_section->vma |
11667 | + got->output_offset | |
411e1bfb | 11668 | + off); |
4cc603a5 | 11669 | outrel.r_addend = addend; |
d881513a | 11670 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 11671 | { |
411e1bfb | 11672 | outrel.r_addend = 0; |
e515b051 | 11673 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
11674 | if (tls_type == (TLS_TLS | TLS_GD)) |
11675 | { | |
e717da7e AM |
11676 | loc = relgot->contents; |
11677 | loc += (relgot->reloc_count++ | |
d881513a AM |
11678 | * sizeof (Elf64_External_Rela)); |
11679 | bfd_elf64_swap_reloca_out (output_bfd, | |
11680 | &outrel, loc); | |
e515b051 | 11681 | outrel.r_offset += 8; |
4cc603a5 | 11682 | outrel.r_addend = addend; |
d881513a AM |
11683 | outrel.r_info |
11684 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 11685 | } |
411e1bfb | 11686 | } |
951fd09b | 11687 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 11688 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 11689 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 11690 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
11691 | else if (indx != 0) |
11692 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
11693 | else | |
81407a69 | 11694 | { |
25f23106 AM |
11695 | if (ifunc) |
11696 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
11697 | else | |
11698 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
11699 | |
11700 | /* Write the .got section contents for the sake | |
11701 | of prelink. */ | |
e717da7e | 11702 | loc = got->contents + off; |
23fbd6fa JJ |
11703 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
11704 | loc); | |
81407a69 | 11705 | } |
81407a69 AM |
11706 | |
11707 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
11708 | { |
11709 | outrel.r_addend += relocation; | |
11710 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 11711 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 11712 | } |
e717da7e AM |
11713 | loc = relgot->contents; |
11714 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
11715 | * sizeof (Elf64_External_Rela)); |
11716 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
11717 | } | |
11718 | ||
ad8e1ba5 | 11719 | /* Init the .got section contents here if we're not |
81407a69 | 11720 | emitting a reloc. */ |
d881513a | 11721 | else |
411e1bfb | 11722 | { |
4cc603a5 | 11723 | relocation += addend; |
7b609f53 AM |
11724 | if (tls_type == (TLS_TLS | TLS_LD)) |
11725 | relocation = 1; | |
11726 | else if (tls_type != 0) | |
411e1bfb | 11727 | { |
e1918d23 | 11728 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 11729 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 11730 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 11731 | |
7b609f53 AM |
11732 | if (tls_type == (TLS_TLS | TLS_GD)) |
11733 | { | |
11734 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 11735 | got->contents + off + 8); |
7b609f53 AM |
11736 | relocation = 1; |
11737 | } | |
411e1bfb | 11738 | } |
7b609f53 | 11739 | |
411e1bfb | 11740 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 11741 | got->contents + off); |
5bd4f169 AM |
11742 | } |
11743 | } | |
11744 | ||
65f38f15 AM |
11745 | if (off >= (bfd_vma) -2) |
11746 | abort (); | |
11747 | ||
e717da7e | 11748 | relocation = got->output_offset + off; |
65f38f15 | 11749 | |
5bd4f169 | 11750 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 11751 | addend = -TOC_BASE_OFF; |
5bd4f169 | 11752 | } |
65f38f15 AM |
11753 | break; |
11754 | ||
11755 | case R_PPC64_PLT16_HA: | |
11756 | case R_PPC64_PLT16_HI: | |
11757 | case R_PPC64_PLT16_LO: | |
11758 | case R_PPC64_PLT32: | |
11759 | case R_PPC64_PLT64: | |
11760 | /* Relocation is to the entry for this symbol in the | |
11761 | procedure linkage table. */ | |
11762 | ||
11763 | /* Resolve a PLT reloc against a local symbol directly, | |
11764 | without using the procedure linkage table. */ | |
11765 | if (h == NULL) | |
11766 | break; | |
11767 | ||
411e1bfb AM |
11768 | /* It's possible that we didn't make a PLT entry for this |
11769 | symbol. This happens when statically linking PIC code, | |
11770 | or when using -Bsymbolic. Go find a match if there is a | |
11771 | PLT entry. */ | |
4ce794b7 | 11772 | if (htab->plt != NULL) |
65f38f15 | 11773 | { |
411e1bfb | 11774 | struct plt_entry *ent; |
039b3fef | 11775 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 11776 | if (ent->addend == orig_addend |
411e1bfb AM |
11777 | && ent->plt.offset != (bfd_vma) -1) |
11778 | { | |
4ce794b7 AM |
11779 | relocation = (htab->plt->output_section->vma |
11780 | + htab->plt->output_offset | |
411e1bfb AM |
11781 | + ent->plt.offset); |
11782 | unresolved_reloc = FALSE; | |
11783 | } | |
65f38f15 | 11784 | } |
65f38f15 | 11785 | break; |
5bd4f169 | 11786 | |
0b13192e AM |
11787 | case R_PPC64_TOC: |
11788 | /* Relocation value is TOC base. */ | |
11789 | relocation = TOCstart; | |
11790 | if (r_symndx == 0) | |
11791 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
11792 | else if (unresolved_reloc) |
11793 | ; | |
11794 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
11795 | relocation += htab->stub_group[sec->id].toc_off; |
11796 | else | |
11797 | unresolved_reloc = TRUE; | |
ab96bf03 | 11798 | goto dodyn; |
0b13192e | 11799 | |
5bd4f169 AM |
11800 | /* TOC16 relocs. We want the offset relative to the TOC base, |
11801 | which is the address of the start of the TOC plus 0x8000. | |
11802 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
11803 | in this order. */ | |
65f38f15 AM |
11804 | case R_PPC64_TOC16: |
11805 | case R_PPC64_TOC16_LO: | |
11806 | case R_PPC64_TOC16_HI: | |
11807 | case R_PPC64_TOC16_DS: | |
11808 | case R_PPC64_TOC16_LO_DS: | |
11809 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 11810 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
11811 | break; |
11812 | ||
11813 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
11814 | case R_PPC64_SECTOFF: |
11815 | case R_PPC64_SECTOFF_LO: | |
11816 | case R_PPC64_SECTOFF_HI: | |
11817 | case R_PPC64_SECTOFF_DS: | |
11818 | case R_PPC64_SECTOFF_LO_DS: | |
11819 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 11820 | if (sec != NULL) |
65f38f15 | 11821 | addend -= sec->output_section->vma; |
5bd4f169 AM |
11822 | break; |
11823 | ||
25f23106 AM |
11824 | case R_PPC64_REL16: |
11825 | case R_PPC64_REL16_LO: | |
11826 | case R_PPC64_REL16_HI: | |
11827 | case R_PPC64_REL16_HA: | |
11828 | break; | |
11829 | ||
721956f4 AM |
11830 | case R_PPC64_REL14: |
11831 | case R_PPC64_REL14_BRNTAKEN: | |
11832 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
11833 | case R_PPC64_REL24: |
11834 | break; | |
11835 | ||
411e1bfb AM |
11836 | case R_PPC64_TPREL16: |
11837 | case R_PPC64_TPREL16_LO: | |
11838 | case R_PPC64_TPREL16_HI: | |
11839 | case R_PPC64_TPREL16_HA: | |
11840 | case R_PPC64_TPREL16_DS: | |
11841 | case R_PPC64_TPREL16_LO_DS: | |
11842 | case R_PPC64_TPREL16_HIGHER: | |
11843 | case R_PPC64_TPREL16_HIGHERA: | |
11844 | case R_PPC64_TPREL16_HIGHEST: | |
11845 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
11846 | if (h != NULL |
11847 | && h->elf.root.type == bfd_link_hash_undefweak | |
11848 | && h->elf.dynindx == -1) | |
11849 | { | |
11850 | /* Make this relocation against an undefined weak symbol | |
11851 | resolve to zero. This is really just a tweak, since | |
11852 | code using weak externs ought to check that they are | |
11853 | defined before using them. */ | |
11854 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
11855 | ||
11856 | insn = bfd_get_32 (output_bfd, p); | |
11857 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
11858 | if (insn != 0) | |
11859 | bfd_put_32 (output_bfd, insn, p); | |
11860 | break; | |
11861 | } | |
e1918d23 | 11862 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11863 | if (info->shared) |
11864 | /* The TPREL16 relocs shouldn't really be used in shared | |
11865 | libs as they will result in DT_TEXTREL being set, but | |
11866 | support them anyway. */ | |
11867 | goto dodyn; | |
11868 | break; | |
11869 | ||
11870 | case R_PPC64_DTPREL16: | |
11871 | case R_PPC64_DTPREL16_LO: | |
11872 | case R_PPC64_DTPREL16_HI: | |
11873 | case R_PPC64_DTPREL16_HA: | |
11874 | case R_PPC64_DTPREL16_DS: | |
11875 | case R_PPC64_DTPREL16_LO_DS: | |
11876 | case R_PPC64_DTPREL16_HIGHER: | |
11877 | case R_PPC64_DTPREL16_HIGHERA: | |
11878 | case R_PPC64_DTPREL16_HIGHEST: | |
11879 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 11880 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11881 | break; |
11882 | ||
e515b051 AM |
11883 | case R_PPC64_DTPMOD64: |
11884 | relocation = 1; | |
11885 | addend = 0; | |
11886 | goto dodyn; | |
11887 | ||
411e1bfb | 11888 | case R_PPC64_TPREL64: |
e1918d23 | 11889 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11890 | goto dodyn; |
11891 | ||
11892 | case R_PPC64_DTPREL64: | |
e1918d23 | 11893 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11894 | /* Fall thru */ |
11895 | ||
65f38f15 AM |
11896 | /* Relocations that may need to be propagated if this is a |
11897 | dynamic object. */ | |
04c9666a | 11898 | case R_PPC64_REL30: |
65f38f15 AM |
11899 | case R_PPC64_REL32: |
11900 | case R_PPC64_REL64: | |
11901 | case R_PPC64_ADDR14: | |
11902 | case R_PPC64_ADDR14_BRNTAKEN: | |
11903 | case R_PPC64_ADDR14_BRTAKEN: | |
11904 | case R_PPC64_ADDR16: | |
11905 | case R_PPC64_ADDR16_DS: | |
11906 | case R_PPC64_ADDR16_HA: | |
11907 | case R_PPC64_ADDR16_HI: | |
11908 | case R_PPC64_ADDR16_HIGHER: | |
11909 | case R_PPC64_ADDR16_HIGHERA: | |
11910 | case R_PPC64_ADDR16_HIGHEST: | |
11911 | case R_PPC64_ADDR16_HIGHESTA: | |
11912 | case R_PPC64_ADDR16_LO: | |
11913 | case R_PPC64_ADDR16_LO_DS: | |
11914 | case R_PPC64_ADDR24: | |
65f38f15 AM |
11915 | case R_PPC64_ADDR32: |
11916 | case R_PPC64_ADDR64: | |
11917 | case R_PPC64_UADDR16: | |
11918 | case R_PPC64_UADDR32: | |
11919 | case R_PPC64_UADDR64: | |
411e1bfb | 11920 | dodyn: |
5d1634d7 | 11921 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
11922 | break; |
11923 | ||
41bd81ab AM |
11924 | if (NO_OPD_RELOCS && is_opd) |
11925 | break; | |
11926 | ||
65f38f15 | 11927 | if ((info->shared |
4e795f50 | 11928 | && (h == NULL |
039b3fef AM |
11929 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11930 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 11931 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 11932 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
11933 | || (ELIMINATE_COPY_RELOCS |
11934 | && !info->shared | |
65f38f15 | 11935 | && h != NULL |
039b3fef | 11936 | && h->elf.dynindx != -1 |
f5385ebf | 11937 | && !h->elf.non_got_ref |
25f23106 AM |
11938 | && !h->elf.def_regular) |
11939 | || (!info->shared | |
11940 | && (h != NULL | |
11941 | ? h->elf.type == STT_GNU_IFUNC | |
11942 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 11943 | { |
b34976b6 | 11944 | bfd_boolean skip, relocate; |
65f38f15 | 11945 | asection *sreloc; |
1cf1f670 | 11946 | bfd_vma out_off; |
65f38f15 AM |
11947 | |
11948 | /* When generating a dynamic object, these relocations | |
11949 | are copied into the output file to be resolved at run | |
11950 | time. */ | |
11951 | ||
b34976b6 AM |
11952 | skip = FALSE; |
11953 | relocate = FALSE; | |
65f38f15 | 11954 | |
1cf1f670 AM |
11955 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11956 | input_section, rel->r_offset); | |
11957 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11958 | skip = TRUE; |
1cf1f670 | 11959 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11960 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11961 | out_off += (input_section->output_section->vma |
11962 | + input_section->output_offset); | |
11963 | outrel.r_offset = out_off; | |
411e1bfb | 11964 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11965 | |
1cf1f670 AM |
11966 | /* Optimize unaligned reloc use. */ |
11967 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11968 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11969 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11970 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11971 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11972 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11973 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11974 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11975 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11976 | ||
65f38f15 | 11977 | if (skip) |
0bb2d96a | 11978 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11979 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11980 | && !is_opd |
11981 | && r_type != R_PPC64_TOC) | |
039b3fef | 11982 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11983 | else |
11984 | { | |
41bd81ab AM |
11985 | /* This symbol is local, or marked to become local, |
11986 | or this is an opd section reloc which must point | |
11987 | at a local function. */ | |
65f38f15 | 11988 | outrel.r_addend += relocation; |
e86ce104 | 11989 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11990 | { |
3fad3c7c | 11991 | if (is_opd && h != NULL) |
afbe61cf AM |
11992 | { |
11993 | /* Lie about opd entries. This case occurs | |
11994 | when building shared libraries and we | |
11995 | reference a function in another shared | |
3fad3c7c AM |
11996 | lib. The same thing happens for a weak |
11997 | definition in an application that's | |
11998 | overridden by a strong definition in a | |
11999 | shared lib. (I believe this is a generic | |
12000 | bug in binutils handling of weak syms.) | |
12001 | In these cases we won't use the opd | |
1e2f5b6e | 12002 | entry in this lib. */ |
b34976b6 | 12003 | unresolved_reloc = FALSE; |
afbe61cf | 12004 | } |
25f23106 AM |
12005 | if (!is_opd |
12006 | && r_type == R_PPC64_ADDR64 | |
12007 | && (h != NULL | |
12008 | ? h->elf.type == STT_GNU_IFUNC | |
12009 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
12010 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12011 | else | |
12012 | { | |
12013 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 12014 | |
25f23106 AM |
12015 | /* We need to relocate .opd contents for ld.so. |
12016 | Prelink also wants simple and consistent rules | |
12017 | for relocs. This make all RELATIVE relocs have | |
12018 | *r_offset equal to r_addend. */ | |
12019 | relocate = TRUE; | |
12020 | } | |
65f38f15 AM |
12021 | } |
12022 | else | |
12023 | { | |
12024 | long indx = 0; | |
12025 | ||
25f23106 AM |
12026 | if (h != NULL |
12027 | ? h->elf.type == STT_GNU_IFUNC | |
12028 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
12029 | { | |
12030 | (*_bfd_error_handler) | |
12031 | (_("%B(%A+0x%lx): relocation %s for indirect " | |
12032 | "function %s unsupported"), | |
12033 | input_bfd, | |
12034 | input_section, | |
12035 | (long) rel->r_offset, | |
12036 | ppc64_elf_howto_table[r_type]->name, | |
12037 | sym_name); | |
12038 | ret = FALSE; | |
12039 | } | |
12040 | else if (r_symndx == 0 || bfd_is_abs_section (sec)) | |
65f38f15 AM |
12041 | ; |
12042 | else if (sec == NULL || sec->owner == NULL) | |
12043 | { | |
12044 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 12045 | return FALSE; |
65f38f15 AM |
12046 | } |
12047 | else | |
12048 | { | |
12049 | asection *osec; | |
12050 | ||
12051 | osec = sec->output_section; | |
12052 | indx = elf_section_data (osec)->dynindx; | |
12053 | ||
74541ad4 AM |
12054 | if (indx == 0) |
12055 | { | |
12056 | if ((osec->flags & SEC_READONLY) == 0 | |
12057 | && htab->elf.data_index_section != NULL) | |
12058 | osec = htab->elf.data_index_section; | |
12059 | else | |
12060 | osec = htab->elf.text_index_section; | |
12061 | indx = elf_section_data (osec)->dynindx; | |
12062 | } | |
12063 | BFD_ASSERT (indx != 0); | |
12064 | ||
65f38f15 AM |
12065 | /* We are turning this relocation into one |
12066 | against a section symbol, so subtract out | |
12067 | the output section's address but not the | |
12068 | offset of the input section in the output | |
12069 | section. */ | |
12070 | outrel.r_addend -= osec->vma; | |
12071 | } | |
12072 | ||
12073 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
12074 | } | |
12075 | } | |
12076 | ||
12077 | sreloc = elf_section_data (input_section)->sreloc; | |
25f23106 AM |
12078 | if (!htab->elf.dynamic_sections_created) |
12079 | sreloc = htab->reliplt; | |
65f38f15 AM |
12080 | if (sreloc == NULL) |
12081 | abort (); | |
12082 | ||
dfbb6ac9 AM |
12083 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
12084 | >= sreloc->size) | |
12085 | abort (); | |
947216bf AM |
12086 | loc = sreloc->contents; |
12087 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
12088 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
12089 | ||
12090 | /* If this reloc is against an external symbol, it will | |
12091 | be computed at runtime, so there's no need to do | |
81407a69 AM |
12092 | anything now. However, for the sake of prelink ensure |
12093 | that the section contents are a known value. */ | |
65f38f15 | 12094 | if (! relocate) |
81407a69 AM |
12095 | { |
12096 | unresolved_reloc = FALSE; | |
12097 | /* The value chosen here is quite arbitrary as ld.so | |
12098 | ignores section contents except for the special | |
12099 | case of .opd where the contents might be accessed | |
12100 | before relocation. Choose zero, as that won't | |
12101 | cause reloc overflow. */ | |
12102 | relocation = 0; | |
12103 | addend = 0; | |
12104 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
12105 | to improve backward compatibility with older | |
12106 | versions of ld. */ | |
12107 | if (r_type == R_PPC64_ADDR64) | |
12108 | addend = outrel.r_addend; | |
12109 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 12110 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
12111 | addend = (input_section->output_section->vma |
12112 | + input_section->output_offset | |
12113 | + rel->r_offset); | |
81407a69 | 12114 | } |
65f38f15 | 12115 | } |
5bd4f169 AM |
12116 | break; |
12117 | ||
65f38f15 AM |
12118 | case R_PPC64_COPY: |
12119 | case R_PPC64_GLOB_DAT: | |
12120 | case R_PPC64_JMP_SLOT: | |
25f23106 | 12121 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
12122 | case R_PPC64_RELATIVE: |
12123 | /* We shouldn't ever see these dynamic relocs in relocatable | |
12124 | files. */ | |
ae9a127f | 12125 | /* Fall through. */ |
65f38f15 AM |
12126 | |
12127 | case R_PPC64_PLTGOT16: | |
12128 | case R_PPC64_PLTGOT16_DS: | |
12129 | case R_PPC64_PLTGOT16_HA: | |
12130 | case R_PPC64_PLTGOT16_HI: | |
12131 | case R_PPC64_PLTGOT16_LO: | |
12132 | case R_PPC64_PLTGOT16_LO_DS: | |
12133 | case R_PPC64_PLTREL32: | |
12134 | case R_PPC64_PLTREL64: | |
12135 | /* These ones haven't been implemented yet. */ | |
12136 | ||
12137 | (*_bfd_error_handler) | |
d003868e AM |
12138 | (_("%B: relocation %s is not supported for symbol %s."), |
12139 | input_bfd, | |
4ce794b7 | 12140 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
12141 | |
12142 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 12143 | ret = FALSE; |
5bd4f169 | 12144 | continue; |
65f38f15 | 12145 | } |
5bd4f169 | 12146 | |
65f38f15 AM |
12147 | /* Do any further special processing. */ |
12148 | switch (r_type) | |
12149 | { | |
12150 | default: | |
12151 | break; | |
12152 | ||
12153 | case R_PPC64_ADDR16_HA: | |
25f23106 | 12154 | case R_PPC64_REL16_HA: |
65f38f15 AM |
12155 | case R_PPC64_ADDR16_HIGHERA: |
12156 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
12157 | case R_PPC64_TOC16_HA: |
12158 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
12159 | case R_PPC64_TPREL16_HA: |
12160 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
12161 | case R_PPC64_TPREL16_HIGHER: |
12162 | case R_PPC64_TPREL16_HIGHERA: | |
12163 | case R_PPC64_TPREL16_HIGHEST: | |
12164 | case R_PPC64_TPREL16_HIGHESTA: | |
12165 | case R_PPC64_DTPREL16_HIGHER: | |
12166 | case R_PPC64_DTPREL16_HIGHERA: | |
12167 | case R_PPC64_DTPREL16_HIGHEST: | |
12168 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
12169 | /* It's just possible that this symbol is a weak symbol |
12170 | that's not actually defined anywhere. In that case, | |
12171 | 'sec' would be NULL, and we should leave the symbol | |
12172 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
12173 | if (sec == NULL) |
12174 | break; | |
12175 | /* Fall thru */ | |
12176 | ||
12177 | case R_PPC64_GOT16_HA: | |
12178 | case R_PPC64_PLTGOT16_HA: | |
12179 | case R_PPC64_PLT16_HA: | |
12180 | case R_PPC64_GOT_TLSGD16_HA: | |
12181 | case R_PPC64_GOT_TLSLD16_HA: | |
12182 | case R_PPC64_GOT_TPREL16_HA: | |
12183 | case R_PPC64_GOT_DTPREL16_HA: | |
12184 | /* Add 0x10000 if sign bit in 0:15 is set. | |
12185 | Bits 0:15 are not used. */ | |
12186 | addend += 0x8000; | |
65f38f15 AM |
12187 | break; |
12188 | ||
12189 | case R_PPC64_ADDR16_DS: | |
12190 | case R_PPC64_ADDR16_LO_DS: | |
12191 | case R_PPC64_GOT16_DS: | |
12192 | case R_PPC64_GOT16_LO_DS: | |
12193 | case R_PPC64_PLT16_LO_DS: | |
12194 | case R_PPC64_SECTOFF_DS: | |
12195 | case R_PPC64_SECTOFF_LO_DS: | |
12196 | case R_PPC64_TOC16_DS: | |
12197 | case R_PPC64_TOC16_LO_DS: | |
12198 | case R_PPC64_PLTGOT16_DS: | |
12199 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
12200 | case R_PPC64_GOT_TPREL16_DS: |
12201 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12202 | case R_PPC64_GOT_DTPREL16_DS: | |
12203 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12204 | case R_PPC64_TPREL16_DS: | |
12205 | case R_PPC64_TPREL16_LO_DS: | |
12206 | case R_PPC64_DTPREL16_DS: | |
12207 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
12208 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
12209 | mask = 3; | |
12210 | /* If this reloc is against an lq insn, then the value must be | |
12211 | a multiple of 16. This is somewhat of a hack, but the | |
12212 | "correct" way to do this by defining _DQ forms of all the | |
12213 | _DS relocs bloats all reloc switches in this file. It | |
12214 | doesn't seem to make much sense to use any of these relocs | |
12215 | in data, so testing the insn should be safe. */ | |
494dac0c | 12216 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
12217 | mask = 15; |
12218 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
12219 | { |
12220 | (*_bfd_error_handler) | |
d003868e AM |
12221 | (_("%B: error: relocation %s not a multiple of %d"), |
12222 | input_bfd, | |
4ce794b7 | 12223 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 12224 | mask + 1); |
65f38f15 | 12225 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 12226 | ret = FALSE; |
65f38f15 AM |
12227 | continue; |
12228 | } | |
12229 | break; | |
5bd4f169 AM |
12230 | } |
12231 | ||
239e1f3a AM |
12232 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
12233 | because such sections are not SEC_ALLOC and thus ld.so will | |
12234 | not process them. */ | |
65f38f15 | 12235 | if (unresolved_reloc |
239e1f3a | 12236 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 12237 | && h->elf.def_dynamic)) |
9c07fe7c AM |
12238 | { |
12239 | (*_bfd_error_handler) | |
d003868e AM |
12240 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
12241 | input_bfd, | |
12242 | input_section, | |
9c07fe7c | 12243 | (long) rel->r_offset, |
7b609f53 | 12244 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 12245 | h->elf.root.root.string); |
b34976b6 | 12246 | ret = FALSE; |
9c07fe7c | 12247 | } |
5bd4f169 | 12248 | |
65f38f15 | 12249 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
12250 | input_bfd, |
12251 | input_section, | |
12252 | contents, | |
411e1bfb | 12253 | rel->r_offset, |
5bd4f169 AM |
12254 | relocation, |
12255 | addend); | |
12256 | ||
ef60b7ff | 12257 | if (r != bfd_reloc_ok) |
5bd4f169 | 12258 | { |
cd27b276 AM |
12259 | if (sym_name == NULL) |
12260 | sym_name = "(null)"; | |
12261 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 12262 | { |
cd27b276 AM |
12263 | if (warned) |
12264 | continue; | |
12265 | if (h != NULL | |
039b3fef | 12266 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 12267 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
12268 | { |
12269 | /* Assume this is a call protected by other code that | |
12270 | detects the symbol is undefined. If this is the case, | |
12271 | we can safely ignore the overflow. If not, the | |
12272 | program is hosed anyway, and a little warning isn't | |
12273 | going to help. */ | |
12274 | ||
12275 | continue; | |
12276 | } | |
12277 | ||
ef60b7ff | 12278 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
12279 | (info, (h ? &h->elf.root : NULL), sym_name, |
12280 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 12281 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 12282 | return FALSE; |
ef60b7ff AM |
12283 | } |
12284 | else | |
12285 | { | |
12286 | (*_bfd_error_handler) | |
d003868e AM |
12287 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
12288 | input_bfd, | |
12289 | input_section, | |
7b609f53 | 12290 | (long) rel->r_offset, |
4ce794b7 | 12291 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
12292 | sym_name, |
12293 | (int) r); | |
b34976b6 | 12294 | ret = FALSE; |
ef60b7ff | 12295 | } |
5bd4f169 | 12296 | } |
5bd4f169 AM |
12297 | } |
12298 | ||
645ea6a9 AM |
12299 | /* If we're emitting relocations, then shortly after this function |
12300 | returns, reloc offsets and addends for this section will be | |
12301 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
12302 | file rather than the input. Save a copy of the relocs for |
12303 | opd_entry_value. */ | |
4cc603a5 | 12304 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
12305 | { |
12306 | bfd_size_type amt; | |
12307 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
12308 | rel = bfd_alloc (input_bfd, amt); | |
12309 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
12310 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
12311 | if (rel == NULL) | |
12312 | return FALSE; | |
12313 | memcpy (rel, relocs, amt); | |
12314 | } | |
5bd4f169 AM |
12315 | return ret; |
12316 | } | |
12317 | ||
754021d0 AM |
12318 | /* Adjust the value of any local symbols in opd sections. */ |
12319 | ||
6e0b88f1 | 12320 | static int |
754021d0 AM |
12321 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
12322 | const char *name ATTRIBUTE_UNUSED, | |
12323 | Elf_Internal_Sym *elfsym, | |
12324 | asection *input_sec, | |
12325 | struct elf_link_hash_entry *h) | |
12326 | { | |
74f0fb50 AM |
12327 | struct _opd_sec_data *opd; |
12328 | long adjust; | |
754021d0 AM |
12329 | bfd_vma value; |
12330 | ||
4025353c | 12331 | if (h != NULL) |
6e0b88f1 | 12332 | return 1; |
4025353c | 12333 | |
74f0fb50 AM |
12334 | opd = get_opd_info (input_sec); |
12335 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 12336 | return 1; |
754021d0 AM |
12337 | |
12338 | value = elfsym->st_value - input_sec->output_offset; | |
12339 | if (!info->relocatable) | |
12340 | value -= input_sec->output_section->vma; | |
12341 | ||
74f0fb50 | 12342 | adjust = opd->adjust[value / 8]; |
4025353c | 12343 | if (adjust == -1) |
6e0b88f1 AM |
12344 | return 2; |
12345 | ||
12346 | elfsym->st_value += adjust; | |
12347 | return 1; | |
754021d0 AM |
12348 | } |
12349 | ||
5bd4f169 AM |
12350 | /* Finish up dynamic symbol handling. We set the contents of various |
12351 | dynamic sections here. */ | |
12352 | ||
b34976b6 | 12353 | static bfd_boolean |
4ce794b7 AM |
12354 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
12355 | struct bfd_link_info *info, | |
12356 | struct elf_link_hash_entry *h, | |
12357 | Elf_Internal_Sym *sym) | |
5bd4f169 | 12358 | { |
65f38f15 | 12359 | struct ppc_link_hash_table *htab; |
8387904d AM |
12360 | struct plt_entry *ent; |
12361 | Elf_Internal_Rela rela; | |
12362 | bfd_byte *loc; | |
5bd4f169 | 12363 | |
65f38f15 | 12364 | htab = ppc_hash_table (info); |
5bd4f169 | 12365 | |
8387904d AM |
12366 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
12367 | if (ent->plt.offset != (bfd_vma) -1) | |
12368 | { | |
12369 | /* This symbol has an entry in the procedure linkage | |
12370 | table. Set it up. */ | |
e054468f AM |
12371 | if (!htab->elf.dynamic_sections_created |
12372 | || h->dynindx == -1) | |
12373 | { | |
12374 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
12375 | && h->def_regular | |
12376 | && (h->root.type == bfd_link_hash_defined | |
12377 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
12378 | rela.r_offset = (htab->iplt->output_section->vma |
12379 | + htab->iplt->output_offset | |
12380 | + ent->plt.offset); | |
12381 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
12382 | rela.r_addend = (h->root.u.def.value |
12383 | + h->root.u.def.section->output_offset | |
12384 | + h->root.u.def.section->output_section->vma | |
12385 | + ent->addend); | |
25f23106 AM |
12386 | loc = (htab->reliplt->contents |
12387 | + (htab->reliplt->reloc_count++ | |
12388 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
12389 | } |
12390 | else | |
12391 | { | |
25f23106 AM |
12392 | rela.r_offset = (htab->plt->output_section->vma |
12393 | + htab->plt->output_offset | |
12394 | + ent->plt.offset); | |
e054468f AM |
12395 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
12396 | rela.r_addend = ent->addend; | |
25f23106 AM |
12397 | loc = (htab->relplt->contents |
12398 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
12399 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 12400 | } |
8387904d AM |
12401 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
12402 | } | |
5bd4f169 | 12403 | |
f5385ebf | 12404 | if (h->needs_copy) |
5bd4f169 | 12405 | { |
65f38f15 | 12406 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 12407 | |
65f38f15 AM |
12408 | if (h->dynindx == -1 |
12409 | || (h->root.type != bfd_link_hash_defined | |
12410 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 12411 | || htab->relbss == NULL) |
65f38f15 | 12412 | abort (); |
5bd4f169 AM |
12413 | |
12414 | rela.r_offset = (h->root.u.def.value | |
12415 | + h->root.u.def.section->output_section->vma | |
12416 | + h->root.u.def.section->output_offset); | |
12417 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
12418 | rela.r_addend = 0; | |
4ce794b7 AM |
12419 | loc = htab->relbss->contents; |
12420 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 12421 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
12422 | } |
12423 | ||
5bd4f169 AM |
12424 | /* Mark some specially defined symbols as absolute. */ |
12425 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
12426 | sym->st_shndx = SHN_ABS; | |
12427 | ||
b34976b6 | 12428 | return TRUE; |
5bd4f169 AM |
12429 | } |
12430 | ||
65f38f15 AM |
12431 | /* Used to decide how to sort relocs in an optimal manner for the |
12432 | dynamic linker, before writing them out. */ | |
12433 | ||
12434 | static enum elf_reloc_type_class | |
4ce794b7 | 12435 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 12436 | { |
04c9666a | 12437 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 12438 | |
4ce794b7 | 12439 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 12440 | switch (r_type) |
65f38f15 AM |
12441 | { |
12442 | case R_PPC64_RELATIVE: | |
12443 | return reloc_class_relative; | |
12444 | case R_PPC64_JMP_SLOT: | |
12445 | return reloc_class_plt; | |
12446 | case R_PPC64_COPY: | |
12447 | return reloc_class_copy; | |
12448 | default: | |
12449 | return reloc_class_normal; | |
12450 | } | |
12451 | } | |
12452 | ||
5bd4f169 AM |
12453 | /* Finish up the dynamic sections. */ |
12454 | ||
b34976b6 | 12455 | static bfd_boolean |
4ce794b7 AM |
12456 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
12457 | struct bfd_link_info *info) | |
5bd4f169 | 12458 | { |
65f38f15 AM |
12459 | struct ppc_link_hash_table *htab; |
12460 | bfd *dynobj; | |
5bd4f169 | 12461 | asection *sdyn; |
5bd4f169 | 12462 | |
65f38f15 AM |
12463 | htab = ppc_hash_table (info); |
12464 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
12465 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
12466 | ||
65f38f15 | 12467 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 12468 | { |
5bd4f169 AM |
12469 | Elf64_External_Dyn *dyncon, *dynconend; |
12470 | ||
4ce794b7 | 12471 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 12472 | abort (); |
5bd4f169 AM |
12473 | |
12474 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 12475 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
12476 | for (; dyncon < dynconend; dyncon++) |
12477 | { | |
12478 | Elf_Internal_Dyn dyn; | |
19397422 | 12479 | asection *s; |
5bd4f169 AM |
12480 | |
12481 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
12482 | ||
12483 | switch (dyn.d_tag) | |
12484 | { | |
65f38f15 AM |
12485 | default: |
12486 | continue; | |
5bd4f169 | 12487 | |
5d1634d7 | 12488 | case DT_PPC64_GLINK: |
4ce794b7 | 12489 | s = htab->glink; |
6348e046 | 12490 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
12491 | /* We stupidly defined DT_PPC64_GLINK to be the start |
12492 | of glink rather than the first entry point, which is | |
12493 | what ld.so needs, and now have a bigger stub to | |
12494 | support automatic multiple TOCs. */ | |
12495 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
12496 | break; |
12497 | ||
19397422 AM |
12498 | case DT_PPC64_OPD: |
12499 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12500 | if (s == NULL) |
12501 | continue; | |
12502 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
12503 | break; |
12504 | ||
12505 | case DT_PPC64_OPDSZ: | |
12506 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12507 | if (s == NULL) |
12508 | continue; | |
eea6121a | 12509 | dyn.d_un.d_val = s->size; |
19397422 AM |
12510 | break; |
12511 | ||
65f38f15 | 12512 | case DT_PLTGOT: |
4ce794b7 | 12513 | s = htab->plt; |
6348e046 | 12514 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
12515 | break; |
12516 | ||
12517 | case DT_JMPREL: | |
4ce794b7 | 12518 | s = htab->relplt; |
6348e046 | 12519 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 12520 | break; |
5bd4f169 | 12521 | |
65f38f15 | 12522 | case DT_PLTRELSZ: |
eea6121a | 12523 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
12524 | break; |
12525 | ||
12526 | case DT_RELASZ: | |
12527 | /* Don't count procedure linkage table relocs in the | |
12528 | overall reloc count. */ | |
4ce794b7 | 12529 | s = htab->relplt; |
6348e046 AM |
12530 | if (s == NULL) |
12531 | continue; | |
eea6121a | 12532 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
12533 | break; |
12534 | ||
12535 | case DT_RELA: | |
12536 | /* We may not be using the standard ELF linker script. | |
12537 | If .rela.plt is the first .rela section, we adjust | |
12538 | DT_RELA to not include it. */ | |
4ce794b7 | 12539 | s = htab->relplt; |
6348e046 AM |
12540 | if (s == NULL) |
12541 | continue; | |
12542 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
12543 | continue; | |
eea6121a | 12544 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 12545 | break; |
5bd4f169 | 12546 | } |
5bd4f169 | 12547 | |
65f38f15 | 12548 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 12549 | } |
5bd4f169 AM |
12550 | } |
12551 | ||
eea6121a | 12552 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
12553 | { |
12554 | /* Fill in the first entry in the global offset table. | |
12555 | We use it to hold the link-time TOCbase. */ | |
12556 | bfd_put_64 (output_bfd, | |
60ee0d4a | 12557 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 12558 | htab->got->contents); |
5d1634d7 AM |
12559 | |
12560 | /* Set .got entry size. */ | |
4ce794b7 | 12561 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
12562 | } |
12563 | ||
eea6121a | 12564 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
12565 | { |
12566 | /* Set .plt entry size. */ | |
4ce794b7 | 12567 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
12568 | = PLT_ENTRY_SIZE; |
12569 | } | |
12570 | ||
84f5d08e AM |
12571 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
12572 | brlt ourselves if emitrelocations. */ | |
12573 | if (htab->brlt != NULL | |
12574 | && htab->brlt->reloc_count != 0 | |
12575 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12576 | htab->brlt, | |
12577 | &elf_section_data (htab->brlt)->rel_hdr, | |
12578 | elf_section_data (htab->brlt)->relocs, | |
12579 | NULL)) | |
12580 | return FALSE; | |
12581 | ||
176a0d42 AM |
12582 | if (htab->glink != NULL |
12583 | && htab->glink->reloc_count != 0 | |
12584 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12585 | htab->glink, | |
12586 | &elf_section_data (htab->glink)->rel_hdr, | |
12587 | elf_section_data (htab->glink)->relocs, | |
12588 | NULL)) | |
12589 | return FALSE; | |
12590 | ||
e717da7e | 12591 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
12592 | since we didn't add them to DYNOBJ. We know dynobj is the first |
12593 | bfd. */ | |
e717da7e AM |
12594 | while ((dynobj = dynobj->link_next) != NULL) |
12595 | { | |
12596 | asection *s; | |
7b53ace3 | 12597 | |
0c8d6e5c | 12598 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
12599 | continue; |
12600 | ||
e717da7e AM |
12601 | s = ppc64_elf_tdata (dynobj)->got; |
12602 | if (s != NULL | |
eea6121a | 12603 | && s->size != 0 |
e717da7e AM |
12604 | && s->output_section != bfd_abs_section_ptr |
12605 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12606 | s->contents, s->output_offset, | |
eea6121a | 12607 | s->size)) |
e717da7e AM |
12608 | return FALSE; |
12609 | s = ppc64_elf_tdata (dynobj)->relgot; | |
12610 | if (s != NULL | |
eea6121a | 12611 | && s->size != 0 |
e717da7e AM |
12612 | && s->output_section != bfd_abs_section_ptr |
12613 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12614 | s->contents, s->output_offset, | |
eea6121a | 12615 | s->size)) |
e717da7e AM |
12616 | return FALSE; |
12617 | } | |
f6c52c13 | 12618 | |
b34976b6 | 12619 | return TRUE; |
5bd4f169 AM |
12620 | } |
12621 | ||
5bd4f169 | 12622 | #include "elf64-target.h" |