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 | ||
927be08e AM |
2529 | /* Track GOT entries needed for a given symbol. We might need more |
2530 | than one got entry per symbol. */ | |
2531 | struct got_entry | |
2532 | { | |
2533 | struct got_entry *next; | |
2534 | ||
2535 | /* The symbol addend that we'll be placing in the GOT. */ | |
2536 | bfd_vma addend; | |
2537 | ||
2538 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2539 | symbol referenced from different input files. This is to support | |
2540 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2541 | from one input file to another. After partitioning into TOC groups | |
2542 | we merge entries within the group. | |
2543 | ||
2544 | Point to the BFD owning this GOT entry. */ | |
2545 | bfd *owner; | |
2546 | ||
2547 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2548 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
2549 | char tls_type; | |
2550 | ||
2551 | /* Non-zero if got.ent points to real entry. */ | |
2552 | char is_indirect; | |
2553 | ||
2554 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2555 | union | |
2556 | { | |
2557 | bfd_signed_vma refcount; | |
2558 | bfd_vma offset; | |
2559 | struct got_entry *ent; | |
2560 | } got; | |
2561 | }; | |
2562 | ||
2563 | /* The same for PLT. */ | |
2564 | struct plt_entry | |
2565 | { | |
2566 | struct plt_entry *next; | |
2567 | ||
2568 | bfd_vma addend; | |
2569 | ||
2570 | union | |
2571 | { | |
2572 | bfd_signed_vma refcount; | |
2573 | bfd_vma offset; | |
2574 | } plt; | |
2575 | }; | |
2576 | ||
e717da7e AM |
2577 | struct ppc64_elf_obj_tdata |
2578 | { | |
2579 | struct elf_obj_tdata elf; | |
2580 | ||
2581 | /* Shortcuts to dynamic linker sections. */ | |
2582 | asection *got; | |
2583 | asection *relgot; | |
2584 | ||
b3fac117 AM |
2585 | /* Used during garbage collection. We attach global symbols defined |
2586 | on removed .opd entries to this section so that the sym is removed. */ | |
2587 | asection *deleted_section; | |
81688140 | 2588 | |
927be08e | 2589 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2590 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2591 | struct got_entry tlsld_got; |
8860955f AM |
2592 | |
2593 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2594 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2595 | }; |
2596 | ||
2597 | #define ppc64_elf_tdata(bfd) \ | |
2598 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2599 | ||
2600 | #define ppc64_tlsld_got(bfd) \ | |
2601 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2602 | ||
0c8d6e5c AM |
2603 | #define is_ppc64_elf(bfd) \ |
2604 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2605 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2606 | |
e717da7e AM |
2607 | /* Override the generic function because we store some extras. */ |
2608 | ||
2609 | static bfd_boolean | |
2610 | ppc64_elf_mkobject (bfd *abfd) | |
2611 | { | |
0ffa91dd | 2612 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2613 | PPC64_ELF_DATA); |
e717da7e AM |
2614 | } |
2615 | ||
feee612b AM |
2616 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2617 | default is 32 bit. */ | |
2618 | ||
b34976b6 | 2619 | static bfd_boolean |
4ce794b7 | 2620 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2621 | { |
2622 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2623 | { | |
2624 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2625 | ||
2626 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2627 | { | |
2628 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2629 | abfd->arch_info = abfd->arch_info->next; | |
2630 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2631 | } | |
2632 | } | |
b34976b6 | 2633 | return TRUE; |
feee612b AM |
2634 | } |
2635 | ||
d37c89e5 AM |
2636 | /* Support for core dump NOTE sections. */ |
2637 | ||
2638 | static bfd_boolean | |
2639 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2640 | { | |
eea6121a | 2641 | size_t offset, size; |
d37c89e5 AM |
2642 | |
2643 | if (note->descsz != 504) | |
2644 | return FALSE; | |
2645 | ||
2646 | /* pr_cursig */ | |
2647 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2648 | ||
2649 | /* pr_pid */ | |
2650 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2651 | ||
2652 | /* pr_reg */ | |
2653 | offset = 112; | |
eea6121a | 2654 | size = 384; |
d37c89e5 AM |
2655 | |
2656 | /* Make a ".reg/999" section. */ | |
2657 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2658 | size, note->descpos + offset); |
d37c89e5 AM |
2659 | } |
2660 | ||
2661 | static bfd_boolean | |
2662 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2663 | { | |
2664 | if (note->descsz != 136) | |
2665 | return FALSE; | |
2666 | ||
2667 | elf_tdata (abfd)->core_program | |
2668 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2669 | elf_tdata (abfd)->core_command | |
2670 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2671 | ||
2672 | return TRUE; | |
2673 | } | |
2674 | ||
183e98be AM |
2675 | static char * |
2676 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2677 | ...) | |
2678 | { | |
2679 | switch (note_type) | |
2680 | { | |
2681 | default: | |
2682 | return NULL; | |
2683 | ||
2684 | case NT_PRPSINFO: | |
2685 | { | |
2686 | char data[136]; | |
2687 | va_list ap; | |
2688 | ||
2689 | va_start (ap, note_type); | |
2690 | memset (data, 0, 40); | |
2691 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2692 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2693 | va_end (ap); | |
2694 | return elfcore_write_note (abfd, buf, bufsiz, | |
2695 | "CORE", note_type, data, sizeof (data)); | |
2696 | } | |
2697 | ||
2698 | case NT_PRSTATUS: | |
2699 | { | |
2700 | char data[504]; | |
2701 | va_list ap; | |
2702 | long pid; | |
2703 | int cursig; | |
2704 | const void *greg; | |
2705 | ||
2706 | va_start (ap, note_type); | |
2707 | memset (data, 0, 112); | |
2708 | pid = va_arg (ap, long); | |
2709 | bfd_put_32 (abfd, pid, data + 32); | |
2710 | cursig = va_arg (ap, int); | |
2711 | bfd_put_16 (abfd, cursig, data + 12); | |
2712 | greg = va_arg (ap, const void *); | |
2713 | memcpy (data + 112, greg, 384); | |
2714 | memset (data + 496, 0, 8); | |
2715 | va_end (ap); | |
2716 | return elfcore_write_note (abfd, buf, bufsiz, | |
2717 | "CORE", note_type, data, sizeof (data)); | |
2718 | } | |
2719 | } | |
2720 | } | |
2721 | ||
5bd4f169 AM |
2722 | /* Merge backend specific data from an object file to the output |
2723 | object file when linking. */ | |
2f6d9989 | 2724 | |
b34976b6 | 2725 | static bfd_boolean |
4ce794b7 | 2726 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2727 | { |
5bd4f169 AM |
2728 | /* Check if we have the same endianess. */ |
2729 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2730 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2731 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2732 | { | |
2733 | const char *msg; | |
2734 | ||
2735 | if (bfd_big_endian (ibfd)) | |
d003868e | 2736 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2737 | "and target is little endian"); |
5bd4f169 | 2738 | else |
d003868e | 2739 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2740 | "and target is big endian"); |
5bd4f169 | 2741 | |
d003868e | 2742 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2743 | |
2744 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2745 | return FALSE; |
5bd4f169 AM |
2746 | } |
2747 | ||
b34976b6 | 2748 | return TRUE; |
5bd4f169 | 2749 | } |
f0abc2a1 | 2750 | |
5d35169e AM |
2751 | /* Add extra PPC sections. */ |
2752 | ||
b35d266b | 2753 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2754 | { |
0112cd26 NC |
2755 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2756 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2757 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2758 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2759 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2760 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2761 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2762 | }; |
2763 | ||
7c8fe5c4 AM |
2764 | enum _ppc64_sec_type { |
2765 | sec_normal = 0, | |
2766 | sec_opd = 1, | |
2767 | sec_toc = 2 | |
2768 | }; | |
2769 | ||
f0abc2a1 AM |
2770 | struct _ppc64_elf_section_data |
2771 | { | |
2772 | struct bfd_elf_section_data elf; | |
411e1bfb | 2773 | |
f0abc2a1 AM |
2774 | union |
2775 | { | |
74f0fb50 AM |
2776 | /* An array with one entry for each opd function descriptor. */ |
2777 | struct _opd_sec_data | |
2778 | { | |
2779 | /* Points to the function code section for local opd entries. */ | |
2780 | asection **func_sec; | |
2781 | ||
2782 | /* After editing .opd, adjust references to opd local syms. */ | |
2783 | long *adjust; | |
2784 | } opd; | |
7c8fe5c4 | 2785 | |
3a71aa26 AM |
2786 | /* An array for toc sections, indexed by offset/8. */ |
2787 | struct _toc_sec_data | |
2788 | { | |
2789 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2790 | unsigned *symndx; | |
2791 | ||
2792 | /* And the relocation addend. */ | |
2793 | bfd_vma *add; | |
2794 | } toc; | |
7c8fe5c4 AM |
2795 | } u; |
2796 | ||
2797 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2798 | |
7c8fe5c4 AM |
2799 | /* Flag set when small branches are detected. Used to |
2800 | select suitable defaults for the stub group size. */ | |
2801 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2802 | }; |
2803 | ||
2804 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2805 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2806 | |
2807 | static bfd_boolean | |
4ce794b7 | 2808 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2809 | { |
f592407e AM |
2810 | if (!sec->used_by_bfd) |
2811 | { | |
2812 | struct _ppc64_elf_section_data *sdata; | |
2813 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2814 | |
f592407e AM |
2815 | sdata = bfd_zalloc (abfd, amt); |
2816 | if (sdata == NULL) | |
2817 | return FALSE; | |
2818 | sec->used_by_bfd = sdata; | |
2819 | } | |
f0abc2a1 AM |
2820 | |
2821 | return _bfd_elf_new_section_hook (abfd, sec); | |
2822 | } | |
4025353c | 2823 | |
74f0fb50 | 2824 | static struct _opd_sec_data * |
4025353c AM |
2825 | get_opd_info (asection * sec) |
2826 | { | |
2827 | if (sec != NULL | |
2828 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2829 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2830 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2831 | return NULL; |
2832 | } | |
90e3cdf2 JJ |
2833 | \f |
2834 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2835 | static bfd_boolean synthetic_relocatable; |
2836 | ||
699733f6 | 2837 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2838 | |
2839 | static int | |
2840 | compare_symbols (const void *ap, const void *bp) | |
2841 | { | |
2842 | const asymbol *a = * (const asymbol **) ap; | |
2843 | const asymbol *b = * (const asymbol **) bp; | |
2844 | ||
699733f6 AM |
2845 | /* Section symbols first. */ |
2846 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2847 | return -1; |
699733f6 | 2848 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2849 | return 1; |
2850 | ||
699733f6 | 2851 | /* then .opd symbols. */ |
ffcfec52 AM |
2852 | if (strcmp (a->section->name, ".opd") == 0 |
2853 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2854 | return -1; |
ffcfec52 AM |
2855 | if (strcmp (a->section->name, ".opd") != 0 |
2856 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2857 | return 1; |
2858 | ||
699733f6 | 2859 | /* then other code symbols. */ |
90e3cdf2 JJ |
2860 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2861 | == (SEC_CODE | SEC_ALLOC) | |
2862 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2863 | != (SEC_CODE | SEC_ALLOC)) | |
2864 | return -1; | |
2865 | ||
2866 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2867 | != (SEC_CODE | SEC_ALLOC) | |
2868 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2869 | == (SEC_CODE | SEC_ALLOC)) | |
2870 | return 1; | |
2871 | ||
2872 | if (synthetic_relocatable) | |
2873 | { | |
2874 | if (a->section->id < b->section->id) | |
2875 | return -1; | |
2876 | ||
2877 | if (a->section->id > b->section->id) | |
2878 | return 1; | |
2879 | } | |
2880 | ||
2881 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2882 | return -1; | |
2883 | ||
2884 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2885 | return 1; | |
2886 | ||
4d35a0aa AM |
2887 | /* For syms with the same value, prefer strong dynamic global function |
2888 | syms over other syms. */ | |
2889 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2890 | return -1; | |
2891 | ||
2892 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2893 | return 1; | |
2894 | ||
2895 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2896 | return -1; | |
2897 | ||
2898 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2899 | return 1; | |
2900 | ||
2901 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2902 | return -1; | |
2903 | ||
2904 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2905 | return 1; | |
2906 | ||
2907 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2908 | return -1; | |
2909 | ||
2910 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2911 | return 1; | |
2912 | ||
90e3cdf2 JJ |
2913 | return 0; |
2914 | } | |
2915 | ||
699733f6 | 2916 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2917 | |
699733f6 AM |
2918 | static asymbol * |
2919 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2920 | { |
699733f6 | 2921 | long mid; |
90e3cdf2 | 2922 | |
699733f6 AM |
2923 | if (id == -1) |
2924 | { | |
2925 | while (lo < hi) | |
2926 | { | |
2927 | mid = (lo + hi) >> 1; | |
2928 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2929 | lo = mid + 1; | |
2930 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2931 | hi = mid; | |
2932 | else | |
2933 | return syms[mid]; | |
2934 | } | |
2935 | } | |
2936 | else | |
2937 | { | |
2938 | while (lo < hi) | |
2939 | { | |
2940 | mid = (lo + hi) >> 1; | |
2941 | if (syms[mid]->section->id < id) | |
2942 | lo = mid + 1; | |
2943 | else if (syms[mid]->section->id > id) | |
2944 | hi = mid; | |
2945 | else if (syms[mid]->value < value) | |
2946 | lo = mid + 1; | |
2947 | else if (syms[mid]->value > value) | |
2948 | hi = mid; | |
2949 | else | |
2950 | return syms[mid]; | |
2951 | } | |
2952 | } | |
2953 | return NULL; | |
90e3cdf2 JJ |
2954 | } |
2955 | ||
468392fb AM |
2956 | static bfd_boolean |
2957 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2958 | { | |
2959 | bfd_vma vma = *(bfd_vma *) ptr; | |
2960 | return ((section->flags & SEC_ALLOC) != 0 | |
2961 | && section->vma <= vma | |
2962 | && vma < section->vma + section->size); | |
2963 | } | |
2964 | ||
699733f6 | 2965 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2966 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2967 | |
2968 | static long | |
a7535cf3 AM |
2969 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2970 | long static_count, asymbol **static_syms, | |
2971 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2972 | asymbol **ret) |
90e3cdf2 JJ |
2973 | { |
2974 | asymbol *s; | |
699733f6 AM |
2975 | long i; |
2976 | long count; | |
90e3cdf2 | 2977 | char *names; |
a7535cf3 | 2978 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2979 | asection *opd; |
90e3cdf2 | 2980 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2981 | asymbol **syms; |
90e3cdf2 JJ |
2982 | |
2983 | *ret = NULL; | |
2984 | ||
2985 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2986 | if (opd == NULL) | |
2987 | return 0; | |
2988 | ||
a7535cf3 | 2989 | symcount = static_count; |
c9727e01 | 2990 | if (!relocatable) |
a7535cf3 | 2991 | symcount += dyn_count; |
90e3cdf2 | 2992 | if (symcount == 0) |
c9727e01 | 2993 | return 0; |
90e3cdf2 | 2994 | |
a7535cf3 AM |
2995 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2996 | if (syms == NULL) | |
7356fed5 | 2997 | return -1; |
a7535cf3 AM |
2998 | |
2999 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
3000 | { | |
3001 | /* Use both symbol tables. */ | |
3002 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3003 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3004 | } | |
3005 | else if (!relocatable && static_count == 0) | |
3006 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3007 | else | |
3008 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3009 | ||
90e3cdf2 | 3010 | synthetic_relocatable = relocatable; |
595da8c5 | 3011 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3012 | |
c9727e01 AM |
3013 | if (!relocatable && symcount > 1) |
3014 | { | |
3015 | long j; | |
3016 | /* Trim duplicate syms, since we may have merged the normal and | |
3017 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3018 | different values, so trim any with the same value. */ |
c9727e01 AM |
3019 | for (i = 1, j = 1; i < symcount; ++i) |
3020 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3021 | != syms[i]->value + syms[i]->section->vma) | |
3022 | syms[j++] = syms[i]; | |
3023 | symcount = j; | |
3024 | } | |
3025 | ||
699733f6 | 3026 | i = 0; |
ffcfec52 | 3027 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3028 | ++i; |
3029 | codesecsym = i; | |
90e3cdf2 | 3030 | |
699733f6 AM |
3031 | for (; i < symcount; ++i) |
3032 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3033 | != (SEC_CODE | SEC_ALLOC)) | |
3034 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3035 | break; | |
3036 | codesecsymend = i; | |
90e3cdf2 | 3037 | |
699733f6 AM |
3038 | for (; i < symcount; ++i) |
3039 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3040 | break; | |
3041 | secsymend = i; | |
90e3cdf2 | 3042 | |
699733f6 | 3043 | for (; i < symcount; ++i) |
ffcfec52 | 3044 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3045 | break; |
3046 | opdsymend = i; | |
90e3cdf2 | 3047 | |
699733f6 AM |
3048 | for (; i < symcount; ++i) |
3049 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3050 | != (SEC_CODE | SEC_ALLOC)) | |
3051 | break; | |
3052 | symcount = i; | |
3053 | ||
c9727e01 | 3054 | count = 0; |
90e3cdf2 | 3055 | |
699733f6 | 3056 | if (relocatable) |
90e3cdf2 | 3057 | { |
699733f6 AM |
3058 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3059 | arelent *r; | |
3060 | size_t size; | |
3061 | long relcount; | |
90e3cdf2 | 3062 | |
468392fb AM |
3063 | if (opdsymend == secsymend) |
3064 | goto done; | |
3065 | ||
699733f6 | 3066 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3067 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3068 | if (relcount == 0) |
c9727e01 | 3069 | goto done; |
90e3cdf2 | 3070 | |
7356fed5 AM |
3071 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3072 | { | |
3073 | count = -1; | |
3074 | goto done; | |
3075 | } | |
3076 | ||
699733f6 | 3077 | size = 0; |
595da8c5 | 3078 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3079 | { |
3080 | asymbol *sym; | |
90e3cdf2 | 3081 | |
595da8c5 | 3082 | while (r < opd->relocation + relcount |
699733f6 AM |
3083 | && r->address < syms[i]->value + opd->vma) |
3084 | ++r; | |
90e3cdf2 | 3085 | |
595da8c5 | 3086 | if (r == opd->relocation + relcount) |
699733f6 | 3087 | break; |
90e3cdf2 | 3088 | |
699733f6 AM |
3089 | if (r->address != syms[i]->value + opd->vma) |
3090 | continue; | |
90e3cdf2 | 3091 | |
699733f6 AM |
3092 | if (r->howto->type != R_PPC64_ADDR64) |
3093 | continue; | |
90e3cdf2 | 3094 | |
699733f6 AM |
3095 | sym = *r->sym_ptr_ptr; |
3096 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3097 | sym->section->id, sym->value + r->addend)) | |
3098 | { | |
3099 | ++count; | |
3100 | size += sizeof (asymbol); | |
3101 | size += strlen (syms[i]->name) + 2; | |
3102 | } | |
3103 | } | |
90e3cdf2 | 3104 | |
699733f6 AM |
3105 | s = *ret = bfd_malloc (size); |
3106 | if (s == NULL) | |
3107 | { | |
7356fed5 | 3108 | count = -1; |
c9727e01 | 3109 | goto done; |
699733f6 | 3110 | } |
90e3cdf2 | 3111 | |
699733f6 | 3112 | names = (char *) (s + count); |
90e3cdf2 | 3113 | |
595da8c5 | 3114 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3115 | { |
699733f6 | 3116 | asymbol *sym; |
90e3cdf2 | 3117 | |
595da8c5 | 3118 | while (r < opd->relocation + relcount |
699733f6 AM |
3119 | && r->address < syms[i]->value + opd->vma) |
3120 | ++r; | |
90e3cdf2 | 3121 | |
595da8c5 | 3122 | if (r == opd->relocation + relcount) |
699733f6 AM |
3123 | break; |
3124 | ||
3125 | if (r->address != syms[i]->value + opd->vma) | |
3126 | continue; | |
3127 | ||
3128 | if (r->howto->type != R_PPC64_ADDR64) | |
3129 | continue; | |
90e3cdf2 | 3130 | |
699733f6 AM |
3131 | sym = *r->sym_ptr_ptr; |
3132 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3133 | sym->section->id, sym->value + r->addend)) | |
3134 | { | |
3135 | size_t len; | |
3136 | ||
3137 | *s = *syms[i]; | |
6ba2a415 | 3138 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3139 | s->section = sym->section; |
3140 | s->value = sym->value + r->addend; | |
3141 | s->name = names; | |
3142 | *names++ = '.'; | |
3143 | len = strlen (syms[i]->name); | |
3144 | memcpy (names, syms[i]->name, len + 1); | |
3145 | names += len + 1; | |
6f610d07 UW |
3146 | /* Have udata.p point back to the original symbol this |
3147 | synthetic symbol was derived from. */ | |
3148 | s->udata.p = syms[i]; | |
699733f6 AM |
3149 | s++; |
3150 | } | |
3151 | } | |
3152 | } | |
3153 | else | |
90e3cdf2 | 3154 | { |
468392fb | 3155 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3156 | bfd_byte *contents; |
3157 | size_t size; | |
468392fb AM |
3158 | long plt_count = 0; |
3159 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3160 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3161 | arelent *p; | |
90e3cdf2 | 3162 | |
699733f6 AM |
3163 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3164 | { | |
3165 | if (contents) | |
c9727e01 AM |
3166 | { |
3167 | free_contents_and_exit: | |
3168 | free (contents); | |
3169 | } | |
7356fed5 | 3170 | count = -1; |
c9727e01 | 3171 | goto done; |
699733f6 | 3172 | } |
90e3cdf2 | 3173 | |
699733f6 AM |
3174 | size = 0; |
3175 | for (i = secsymend; i < opdsymend; ++i) | |
3176 | { | |
3177 | bfd_vma ent; | |
90e3cdf2 | 3178 | |
5ef11c02 AM |
3179 | /* Ignore bogus symbols. */ |
3180 | if (syms[i]->value > opd->size - 8) | |
3181 | continue; | |
3182 | ||
699733f6 AM |
3183 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3184 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3185 | { | |
3186 | ++count; | |
3187 | size += sizeof (asymbol); | |
3188 | size += strlen (syms[i]->name) + 2; | |
3189 | } | |
3190 | } | |
90e3cdf2 | 3191 | |
468392fb | 3192 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3193 | if (dyn_count != 0 |
3194 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3195 | { |
3196 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3197 | size_t extdynsize; | |
3198 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3199 | ||
3200 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3201 | goto free_contents_and_exit; | |
3202 | ||
3203 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3204 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3205 | ||
3206 | extdyn = dynbuf; | |
3207 | extdynend = extdyn + dynamic->size; | |
3208 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3209 | { | |
3210 | Elf_Internal_Dyn dyn; | |
3211 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3212 | ||
3213 | if (dyn.d_tag == DT_NULL) | |
3214 | break; | |
3215 | ||
3216 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3217 | { | |
3218 | /* The first glink stub starts at offset 32; see comment in | |
3219 | ppc64_elf_finish_dynamic_sections. */ | |
3220 | glink_vma = dyn.d_un.d_val + 32; | |
3221 | /* The .glink section usually does not survive the final | |
3222 | link; search for the section (usually .text) where the | |
3223 | glink stubs now reside. */ | |
3224 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3225 | &glink_vma); | |
3226 | break; | |
3227 | } | |
3228 | } | |
3229 | ||
3230 | free (dynbuf); | |
3231 | } | |
3232 | ||
3233 | if (glink != NULL) | |
3234 | { | |
3235 | /* Determine __glink trampoline by reading the relative branch | |
3236 | from the first glink stub. */ | |
3237 | bfd_byte buf[4]; | |
3238 | if (bfd_get_section_contents (abfd, glink, buf, | |
3239 | glink_vma + 4 - glink->vma, 4)) | |
3240 | { | |
3241 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3242 | insn ^= B_DOT; | |
3243 | if ((insn & ~0x3fffffc) == 0) | |
3244 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3245 | } | |
3246 | ||
3247 | if (resolv_vma) | |
3248 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3249 | |
066ee829 AM |
3250 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3251 | if (relplt != NULL) | |
3252 | { | |
3253 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3254 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3255 | goto free_contents_and_exit; | |
468392fb | 3256 | |
066ee829 AM |
3257 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3258 | size += plt_count * sizeof (asymbol); | |
468392fb | 3259 | |
066ee829 AM |
3260 | p = relplt->relocation; |
3261 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3262 | { |
3263 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3264 | if (p->addend != 0) | |
3265 | size += sizeof ("+0x") - 1 + 16; | |
3266 | } | |
066ee829 | 3267 | } |
468392fb AM |
3268 | } |
3269 | ||
699733f6 AM |
3270 | s = *ret = bfd_malloc (size); |
3271 | if (s == NULL) | |
7356fed5 | 3272 | goto free_contents_and_exit; |
90e3cdf2 | 3273 | |
468392fb | 3274 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3275 | |
699733f6 | 3276 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3277 | { |
699733f6 | 3278 | bfd_vma ent; |
90e3cdf2 | 3279 | |
5ef11c02 AM |
3280 | if (syms[i]->value > opd->size - 8) |
3281 | continue; | |
3282 | ||
699733f6 AM |
3283 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3284 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3285 | { |
c9727e01 | 3286 | long lo, hi; |
699733f6 | 3287 | size_t len; |
c9727e01 | 3288 | asection *sec = abfd->sections; |
90e3cdf2 | 3289 | |
699733f6 AM |
3290 | *s = *syms[i]; |
3291 | lo = codesecsym; | |
3292 | hi = codesecsymend; | |
3293 | while (lo < hi) | |
3294 | { | |
c9727e01 | 3295 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3296 | if (syms[mid]->section->vma < ent) |
3297 | lo = mid + 1; | |
3298 | else if (syms[mid]->section->vma > ent) | |
3299 | hi = mid; | |
3300 | else | |
c9727e01 AM |
3301 | { |
3302 | sec = syms[mid]->section; | |
3303 | break; | |
3304 | } | |
699733f6 AM |
3305 | } |
3306 | ||
c9727e01 | 3307 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3308 | sec = syms[lo - 1]->section; |
699733f6 AM |
3309 | |
3310 | for (; sec != NULL; sec = sec->next) | |
3311 | { | |
3312 | if (sec->vma > ent) | |
3313 | break; | |
3314 | if ((sec->flags & SEC_ALLOC) == 0 | |
3315 | || (sec->flags & SEC_LOAD) == 0) | |
3316 | break; | |
3317 | if ((sec->flags & SEC_CODE) != 0) | |
3318 | s->section = sec; | |
3319 | } | |
6ba2a415 | 3320 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3321 | s->value = ent - s->section->vma; |
3322 | s->name = names; | |
3323 | *names++ = '.'; | |
3324 | len = strlen (syms[i]->name); | |
3325 | memcpy (names, syms[i]->name, len + 1); | |
3326 | names += len + 1; | |
6f610d07 UW |
3327 | /* Have udata.p point back to the original symbol this |
3328 | synthetic symbol was derived from. */ | |
3329 | s->udata.p = syms[i]; | |
699733f6 | 3330 | s++; |
90e3cdf2 | 3331 | } |
90e3cdf2 | 3332 | } |
699733f6 | 3333 | free (contents); |
468392fb AM |
3334 | |
3335 | if (glink != NULL && relplt != NULL) | |
3336 | { | |
3337 | if (resolv_vma) | |
3338 | { | |
3339 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3340 | memset (s, 0, sizeof *s); |
468392fb | 3341 | s->the_bfd = abfd; |
6ba2a415 | 3342 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3343 | s->section = glink; |
3344 | s->value = resolv_vma - glink->vma; | |
3345 | s->name = names; | |
3346 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3347 | names += sizeof ("__glink_PLTresolve"); | |
3348 | s++; | |
3349 | count++; | |
3350 | } | |
3351 | ||
3352 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3353 | stub rather than on the glink branch table entry. The | |
3354 | objdump disassembler would then use a sensible symbol | |
3355 | name on plt calls. The difficulty in doing so is | |
3356 | a) finding the stubs, and, | |
3357 | b) matching stubs against plt entries, and, | |
3358 | c) there can be multiple stubs for a given plt entry. | |
3359 | ||
3360 | Solving (a) could be done by code scanning, but older | |
3361 | ppc64 binaries used different stubs to current code. | |
3362 | (b) is the tricky one since you need to known the toc | |
3363 | pointer for at least one function that uses a pic stub to | |
3364 | be able to calculate the plt address referenced. | |
3365 | (c) means gdb would need to set multiple breakpoints (or | |
3366 | find the glink branch itself) when setting breakpoints | |
3367 | for pending shared library loads. */ | |
3368 | p = relplt->relocation; | |
3369 | for (i = 0; i < plt_count; i++, p++) | |
3370 | { | |
3371 | size_t len; | |
3372 | ||
3373 | *s = **p->sym_ptr_ptr; | |
3374 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3375 | we are defining a symbol, ensure one of them is set. */ | |
3376 | if ((s->flags & BSF_LOCAL) == 0) | |
3377 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3378 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3379 | s->section = glink; |
3380 | s->value = glink_vma - glink->vma; | |
3381 | s->name = names; | |
3382 | s->udata.p = NULL; | |
3383 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3384 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3385 | names += len; | |
e054468f AM |
3386 | if (p->addend != 0) |
3387 | { | |
3388 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3389 | names += sizeof ("+0x") - 1; | |
3390 | bfd_sprintf_vma (abfd, names, p->addend); | |
3391 | names += strlen (names); | |
3392 | } | |
468392fb AM |
3393 | memcpy (names, "@plt", sizeof ("@plt")); |
3394 | names += sizeof ("@plt"); | |
3395 | s++; | |
3396 | glink_vma += 8; | |
3397 | if (i >= 0x8000) | |
3398 | glink_vma += 4; | |
3399 | } | |
3400 | count += plt_count; | |
3401 | } | |
90e3cdf2 JJ |
3402 | } |
3403 | ||
c9727e01 | 3404 | done: |
a7535cf3 | 3405 | free (syms); |
90e3cdf2 JJ |
3406 | return count; |
3407 | } | |
5bd4f169 | 3408 | \f |
65f38f15 AM |
3409 | /* The following functions are specific to the ELF linker, while |
3410 | functions above are used generally. Those named ppc64_elf_* are | |
3411 | called by the main ELF linker code. They appear in this file more | |
3412 | or less in the order in which they are called. eg. | |
3413 | ppc64_elf_check_relocs is called early in the link process, | |
3414 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3415 | called. |
3416 | ||
3417 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3418 | functions have both a function code symbol and a function descriptor | |
3419 | symbol. A call to foo in a relocatable object file looks like: | |
3420 | ||
3421 | . .text | |
3422 | . x: | |
3423 | . bl .foo | |
3424 | . nop | |
3425 | ||
3426 | The function definition in another object file might be: | |
3427 | ||
3428 | . .section .opd | |
3429 | . foo: .quad .foo | |
3430 | . .quad .TOC.@tocbase | |
3431 | . .quad 0 | |
3432 | . | |
3433 | . .text | |
3434 | . .foo: blr | |
3435 | ||
3436 | When the linker resolves the call during a static link, the branch | |
3437 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3438 | If the function definition is in a shared library, things are a little | |
3439 | different: The call goes via a plt call stub, the opd information gets | |
3440 | copied to the plt, and the linker patches the nop. | |
3441 | ||
3442 | . x: | |
3443 | . bl .foo_stub | |
3444 | . ld 2,40(1) | |
3445 | . | |
3446 | . | |
3447 | . .foo_stub: | |
3448 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3449 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3450 | . std 2,40(1) # this is the general idea |
3451 | . ld 11,0(12) | |
3452 | . ld 2,8(12) | |
3453 | . mtctr 11 | |
3454 | . ld 11,16(12) | |
3455 | . bctr | |
3456 | . | |
3457 | . .section .plt | |
3458 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3459 | ||
3460 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3461 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3462 | copying. | |
3463 | ||
3464 | What are the difficulties here? Well, firstly, the relocations | |
3465 | examined by the linker in check_relocs are against the function code | |
3466 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3467 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3468 | to carefully copy dynamic link information from one symbol to the other. | |
3469 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3470 | symbol as is normal for most other backends. We need foo dynamic | |
3471 | instead, at least for an application final link. However, when | |
3472 | creating a shared library containing foo, we need to have both symbols | |
3473 | dynamic so that references to .foo are satisfied during the early | |
3474 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3475 | definition from some other object, eg. a static library. |
3476 | ||
3477 | Update: As of August 2004, we support a new convention. Function | |
3478 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3479 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3480 | |
3481 | /* The linker needs to keep track of the number of relocs that it | |
3482 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3483 | This is so that it can later discard them if they are found to be | |
3484 | unnecessary. We store the information in a field extending the | |
3485 | regular ELF linker hash table. */ | |
3486 | ||
3487 | struct ppc_dyn_relocs | |
3488 | { | |
3489 | struct ppc_dyn_relocs *next; | |
3490 | ||
3491 | /* The input section of the reloc. */ | |
3492 | asection *sec; | |
3493 | ||
3494 | /* Total number of relocs copied for the input section. */ | |
3495 | bfd_size_type count; | |
3496 | ||
3497 | /* Number of pc-relative relocs copied for the input section. */ | |
3498 | bfd_size_type pc_count; | |
3499 | }; | |
3500 | ||
1d483afe | 3501 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3502 | selects those that must be copied when linking a shared library, |
3503 | even when the symbol is local. */ | |
65f38f15 | 3504 | |
1d483afe AM |
3505 | static int |
3506 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3507 | enum elf_ppc64_reloc_type r_type) | |
3508 | { | |
3509 | switch (r_type) | |
3510 | { | |
3511 | default: | |
3512 | return 1; | |
3513 | ||
3514 | case R_PPC64_REL32: | |
3515 | case R_PPC64_REL64: | |
3516 | case R_PPC64_REL30: | |
3517 | return 0; | |
3518 | ||
3519 | case R_PPC64_TPREL16: | |
3520 | case R_PPC64_TPREL16_LO: | |
3521 | case R_PPC64_TPREL16_HI: | |
3522 | case R_PPC64_TPREL16_HA: | |
3523 | case R_PPC64_TPREL16_DS: | |
3524 | case R_PPC64_TPREL16_LO_DS: | |
3525 | case R_PPC64_TPREL16_HIGHER: | |
3526 | case R_PPC64_TPREL16_HIGHERA: | |
3527 | case R_PPC64_TPREL16_HIGHEST: | |
3528 | case R_PPC64_TPREL16_HIGHESTA: | |
3529 | case R_PPC64_TPREL64: | |
3530 | return !info->executable; | |
3531 | } | |
3532 | } | |
65f38f15 | 3533 | |
f4656909 AM |
3534 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3535 | copying dynamic variables from a shared lib into an app's dynbss | |
3536 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3537 | shared lib. With code that gcc generates, it's vital that this be |
3538 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3539 | the address of a function descriptor, which resides in the .opd | |
3540 | section. gcc uses the descriptor directly rather than going via the | |
3541 | GOT as some other ABI's do, which means that initialized function | |
3542 | pointers must reference the descriptor. Thus, a function pointer | |
3543 | initialized to the address of a function in a shared library will | |
3544 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3545 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3546 | presents a problem as a plt entry for that function is also |
3547 | initialized from the function descriptor symbol and the copy reloc | |
3548 | may not be initialized first. */ | |
a23b6845 | 3549 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3550 | |
721956f4 AM |
3551 | /* Section name for stubs is the associated section name plus this |
3552 | string. */ | |
3553 | #define STUB_SUFFIX ".stub" | |
3554 | ||
3555 | /* Linker stubs. | |
3556 | ppc_stub_long_branch: | |
3557 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3558 | destination, but a 24 bit branch in a stub section will reach. | |
3559 | . b dest | |
3560 | ||
3561 | ppc_stub_plt_branch: | |
3562 | Similar to the above, but a 24 bit branch in the stub section won't | |
3563 | reach its destination. | |
87e226ce AM |
3564 | . addis %r12,%r2,xxx@toc@ha |
3565 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3566 | . mtctr %r11 |
3567 | . bctr | |
3568 | ||
3569 | ppc_stub_plt_call: | |
2c66dc6c AM |
3570 | Used to call a function in a shared library. If it so happens that |
3571 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3572 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3573 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3574 | . std %r2,40(%r1) |
87e226ce | 3575 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3576 | . mtctr %r11 |
ac2df442 | 3577 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3578 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3579 | . bctr |
ad8e1ba5 AM |
3580 | |
3581 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3582 | code to adjust the value and save r2 to support multiple toc sections. | |
3583 | A ppc_stub_long_branch with an r2 offset looks like: | |
3584 | . std %r2,40(%r1) | |
3585 | . addis %r2,%r2,off@ha | |
3586 | . addi %r2,%r2,off@l | |
3587 | . b dest | |
3588 | ||
3589 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3590 | . std %r2,40(%r1) | |
3591 | . addis %r12,%r2,xxx@toc@ha | |
3592 | . ld %r11,xxx@toc@l(%r12) | |
3593 | . addis %r2,%r2,off@ha | |
3594 | . addi %r2,%r2,off@l | |
3595 | . mtctr %r11 | |
3596 | . bctr | |
ac2df442 AM |
3597 | |
3598 | In cases where the "addis" instruction would add zero, the "addis" is | |
3599 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3600 | */ |
3601 | ||
3602 | enum ppc_stub_type { | |
3603 | ppc_stub_none, | |
3604 | ppc_stub_long_branch, | |
ad8e1ba5 | 3605 | ppc_stub_long_branch_r2off, |
721956f4 | 3606 | ppc_stub_plt_branch, |
ad8e1ba5 | 3607 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3608 | ppc_stub_plt_call |
3609 | }; | |
3610 | ||
3611 | struct ppc_stub_hash_entry { | |
3612 | ||
3613 | /* Base hash table entry structure. */ | |
3614 | struct bfd_hash_entry root; | |
3615 | ||
ad8e1ba5 AM |
3616 | enum ppc_stub_type stub_type; |
3617 | ||
721956f4 AM |
3618 | /* The stub section. */ |
3619 | asection *stub_sec; | |
3620 | ||
3621 | /* Offset within stub_sec of the beginning of this stub. */ | |
3622 | bfd_vma stub_offset; | |
3623 | ||
3624 | /* Given the symbol's value and its section we can determine its final | |
3625 | value when building the stubs (so the stub knows where to jump. */ | |
3626 | bfd_vma target_value; | |
3627 | asection *target_section; | |
3628 | ||
721956f4 AM |
3629 | /* The symbol table entry, if any, that this was derived from. */ |
3630 | struct ppc_link_hash_entry *h; | |
e054468f | 3631 | struct plt_entry *plt_ent; |
721956f4 | 3632 | |
411e1bfb AM |
3633 | /* And the reloc addend that this was derived from. */ |
3634 | bfd_vma addend; | |
3635 | ||
721956f4 AM |
3636 | /* Where this stub is being called from, or, in the case of combined |
3637 | stub sections, the first input section in the group. */ | |
3638 | asection *id_sec; | |
3639 | }; | |
3640 | ||
3641 | struct ppc_branch_hash_entry { | |
3642 | ||
3643 | /* Base hash table entry structure. */ | |
3644 | struct bfd_hash_entry root; | |
3645 | ||
c456f082 | 3646 | /* Offset within branch lookup table. */ |
721956f4 AM |
3647 | unsigned int offset; |
3648 | ||
3649 | /* Generation marker. */ | |
3650 | unsigned int iter; | |
3651 | }; | |
65f38f15 AM |
3652 | |
3653 | struct ppc_link_hash_entry | |
3654 | { | |
3655 | struct elf_link_hash_entry elf; | |
3656 | ||
b3fac117 AM |
3657 | union { |
3658 | /* A pointer to the most recently used stub hash entry against this | |
3659 | symbol. */ | |
3660 | struct ppc_stub_hash_entry *stub_cache; | |
3661 | ||
3662 | /* A pointer to the next symbol starting with a '.' */ | |
3663 | struct ppc_link_hash_entry *next_dot_sym; | |
3664 | } u; | |
721956f4 | 3665 | |
65f38f15 AM |
3666 | /* Track dynamic relocs copied for this symbol. */ |
3667 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3668 | |
721956f4 | 3669 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3670 | struct ppc_link_hash_entry *oh; |
721956f4 | 3671 | |
e86ce104 AM |
3672 | /* Flag function code and descriptor symbols. */ |
3673 | unsigned int is_func:1; | |
3674 | unsigned int is_func_descriptor:1; | |
908b32fc | 3675 | unsigned int fake:1; |
411e1bfb | 3676 | |
c5614fa4 AM |
3677 | /* Whether global opd/toc sym has been adjusted or not. |
3678 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3679 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3680 | unsigned int adjust_done:1; |
3681 | ||
99877b66 AM |
3682 | /* Set if we twiddled this symbol to weak at some stage. */ |
3683 | unsigned int was_undefined:1; | |
3684 | ||
411e1bfb | 3685 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3686 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3687 | corresponding relocs are encountered during check_relocs. | |
3688 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3689 | indicate the corresponding GOT entry type is not needed. | |
3690 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3691 | a TPREL one. We use a separate flag rather than setting TPREL | |
3692 | just for convenience in distinguishing the two cases. */ | |
3693 | #define TLS_GD 1 /* GD reloc. */ | |
3694 | #define TLS_LD 2 /* LD reloc. */ | |
3695 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3696 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3697 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3698 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3699 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3700 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
e7b938ca | 3701 | char tls_mask; |
65f38f15 AM |
3702 | }; |
3703 | ||
3704 | /* ppc64 ELF linker hash table. */ | |
3705 | ||
3706 | struct ppc_link_hash_table | |
3707 | { | |
3708 | struct elf_link_hash_table elf; | |
3709 | ||
721956f4 AM |
3710 | /* The stub hash table. */ |
3711 | struct bfd_hash_table stub_hash_table; | |
3712 | ||
3713 | /* Another hash table for plt_branch stubs. */ | |
3714 | struct bfd_hash_table branch_hash_table; | |
3715 | ||
3716 | /* Linker stub bfd. */ | |
3717 | bfd *stub_bfd; | |
3718 | ||
3719 | /* Linker call-backs. */ | |
4ce794b7 AM |
3720 | asection * (*add_stub_section) (const char *, asection *); |
3721 | void (*layout_sections_again) (void); | |
721956f4 AM |
3722 | |
3723 | /* Array to keep track of which stub sections have been created, and | |
3724 | information on stub grouping. */ | |
3725 | struct map_stub { | |
3726 | /* This is the section to which stubs in the group will be attached. */ | |
3727 | asection *link_sec; | |
3728 | /* The stub section. */ | |
3729 | asection *stub_sec; | |
ad8e1ba5 AM |
3730 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3731 | bfd_vma toc_off; | |
721956f4 AM |
3732 | } *stub_group; |
3733 | ||
ad8e1ba5 AM |
3734 | /* Temp used when calculating TOC pointers. */ |
3735 | bfd_vma toc_curr; | |
bf102f86 AM |
3736 | bfd *toc_bfd; |
3737 | asection *toc_first_sec; | |
ad8e1ba5 | 3738 | |
8f3bab57 AM |
3739 | /* Highest input section id. */ |
3740 | int top_id; | |
3741 | ||
734b6cf9 AM |
3742 | /* Highest output section index. */ |
3743 | int top_index; | |
3744 | ||
b3fac117 AM |
3745 | /* Used when adding symbols. */ |
3746 | struct ppc_link_hash_entry *dot_syms; | |
3747 | ||
734b6cf9 AM |
3748 | /* List of input sections for each output section. */ |
3749 | asection **input_list; | |
721956f4 | 3750 | |
65f38f15 | 3751 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3752 | asection *got; |
4ce794b7 AM |
3753 | asection *plt; |
3754 | asection *relplt; | |
e054468f AM |
3755 | asection *iplt; |
3756 | asection *reliplt; | |
4ce794b7 AM |
3757 | asection *dynbss; |
3758 | asection *relbss; | |
3759 | asection *glink; | |
82bd7b59 | 3760 | asection *sfpr; |
4ce794b7 AM |
3761 | asection *brlt; |
3762 | asection *relbrlt; | |
ec338859 | 3763 | |
8387904d AM |
3764 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3765 | struct ppc_link_hash_entry *tls_get_addr; | |
3766 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3767 | |
927be08e AM |
3768 | /* The size of reliplt used by got entry relocs. */ |
3769 | bfd_size_type got_reli_size; | |
3770 | ||
9b5ecbd0 AM |
3771 | /* Statistics. */ |
3772 | unsigned long stub_count[ppc_stub_plt_call]; | |
3773 | ||
ee75fd95 AM |
3774 | /* Number of stubs against global syms. */ |
3775 | unsigned long stub_globals; | |
3776 | ||
ad8e1ba5 | 3777 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3778 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3779 | |
a7f2871e AM |
3780 | /* Set if __tls_get_addr optimization should not be done. */ |
3781 | unsigned int no_tls_get_addr_opt:1; | |
3782 | ||
4c52953f | 3783 | /* Support for multiple toc sections. */ |
33c0ec9d | 3784 | unsigned int do_multi_toc:1; |
4c52953f | 3785 | unsigned int multi_toc_needed:1; |
927be08e | 3786 | unsigned int second_toc_pass:1; |
4c52953f | 3787 | |
5d1634d7 | 3788 | /* Set on error. */ |
99877b66 | 3789 | unsigned int stub_error:1; |
721956f4 | 3790 | |
7d9616d7 | 3791 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3792 | unsigned int twiddled_syms:1; |
721956f4 AM |
3793 | |
3794 | /* Incremented every time we size stubs. */ | |
3795 | unsigned int stub_iteration; | |
5d1634d7 | 3796 | |
87d72d41 AM |
3797 | /* Small local sym cache. */ |
3798 | struct sym_cache sym_cache; | |
65f38f15 AM |
3799 | }; |
3800 | ||
4c52953f AM |
3801 | /* Rename some of the generic section flags to better document how they |
3802 | are used here. */ | |
b0dddeec AM |
3803 | |
3804 | /* Nonzero if this section has TLS related relocations. */ | |
3805 | #define has_tls_reloc sec_flg0 | |
3806 | ||
3807 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3808 | #define has_tls_get_addr_call sec_flg1 | |
3809 | ||
3810 | /* Nonzero if this section has any toc or got relocs. */ | |
3811 | #define has_toc_reloc sec_flg2 | |
3812 | ||
33c0ec9d AM |
3813 | /* Nonzero if this section has small toc/got relocs, ie. that expect |
3814 | the reloc to be in the range -32768 to 32767. */ | |
3815 | #define has_small_toc_reloc sec_flg3 | |
3816 | ||
b0dddeec AM |
3817 | /* Nonzero if this section has a call to another section that uses |
3818 | the toc or got. */ | |
3819 | #define makes_toc_func_call sec_flg4 | |
3820 | ||
3821 | /* Recursion protection when determining above flag. */ | |
3822 | #define call_check_in_progress sec_flg5 | |
4c52953f | 3823 | |
65f38f15 AM |
3824 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3825 | ||
3826 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3827 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3828 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3829 | |
721956f4 AM |
3830 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3831 | ((struct ppc_stub_hash_entry *) \ | |
3832 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3833 | ||
3834 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3835 | ((struct ppc_branch_hash_entry *) \ | |
3836 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3837 | ||
3838 | /* Create an entry in the stub hash table. */ | |
3839 | ||
3840 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3841 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3842 | struct bfd_hash_table *table, | |
3843 | const char *string) | |
721956f4 AM |
3844 | { |
3845 | /* Allocate the structure if it has not already been allocated by a | |
3846 | subclass. */ | |
3847 | if (entry == NULL) | |
3848 | { | |
3849 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3850 | if (entry == NULL) | |
3851 | return entry; | |
3852 | } | |
3853 | ||
3854 | /* Call the allocation method of the superclass. */ | |
3855 | entry = bfd_hash_newfunc (entry, table, string); | |
3856 | if (entry != NULL) | |
3857 | { | |
3858 | struct ppc_stub_hash_entry *eh; | |
3859 | ||
3860 | /* Initialize the local fields. */ | |
3861 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3862 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3863 | eh->stub_sec = NULL; |
3864 | eh->stub_offset = 0; | |
3865 | eh->target_value = 0; | |
3866 | eh->target_section = NULL; | |
721956f4 AM |
3867 | eh->h = NULL; |
3868 | eh->id_sec = NULL; | |
3869 | } | |
3870 | ||
3871 | return entry; | |
3872 | } | |
3873 | ||
3874 | /* Create an entry in the branch hash table. */ | |
3875 | ||
3876 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3877 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3878 | struct bfd_hash_table *table, | |
3879 | const char *string) | |
721956f4 AM |
3880 | { |
3881 | /* Allocate the structure if it has not already been allocated by a | |
3882 | subclass. */ | |
3883 | if (entry == NULL) | |
3884 | { | |
3885 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3886 | if (entry == NULL) | |
3887 | return entry; | |
3888 | } | |
3889 | ||
3890 | /* Call the allocation method of the superclass. */ | |
3891 | entry = bfd_hash_newfunc (entry, table, string); | |
3892 | if (entry != NULL) | |
3893 | { | |
3894 | struct ppc_branch_hash_entry *eh; | |
3895 | ||
3896 | /* Initialize the local fields. */ | |
3897 | eh = (struct ppc_branch_hash_entry *) entry; | |
3898 | eh->offset = 0; | |
3899 | eh->iter = 0; | |
3900 | } | |
3901 | ||
3902 | return entry; | |
3903 | } | |
3904 | ||
65f38f15 AM |
3905 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3906 | ||
3907 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3908 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3909 | struct bfd_hash_table *table, | |
3910 | const char *string) | |
65f38f15 AM |
3911 | { |
3912 | /* Allocate the structure if it has not already been allocated by a | |
3913 | subclass. */ | |
3914 | if (entry == NULL) | |
3915 | { | |
3916 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3917 | if (entry == NULL) | |
3918 | return entry; | |
3919 | } | |
3920 | ||
3921 | /* Call the allocation method of the superclass. */ | |
3922 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3923 | if (entry != NULL) | |
3924 | { | |
3925 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3926 | ||
b3fac117 | 3927 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3928 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3929 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3930 | ||
3931 | /* When making function calls, old ABI code references function entry | |
3932 | points (dot symbols), while new ABI code references the function | |
3933 | descriptor symbol. We need to make any combination of reference and | |
3934 | definition work together, without breaking archive linking. | |
3935 | ||
3936 | For a defined function "foo" and an undefined call to "bar": | |
3937 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3938 | "bar" too). | |
3939 | A new object defines "foo" and references "bar". | |
3940 | ||
3941 | A new object thus has no problem with its undefined symbols being | |
3942 | satisfied by definitions in an old object. On the other hand, the | |
3943 | old object won't have ".bar" satisfied by a new object. | |
3944 | ||
3945 | Keep a list of newly added dot-symbols. */ | |
3946 | ||
3947 | if (string[0] == '.') | |
3948 | { | |
3949 | struct ppc_link_hash_table *htab; | |
3950 | ||
3951 | htab = (struct ppc_link_hash_table *) table; | |
3952 | eh->u.next_dot_sym = htab->dot_syms; | |
3953 | htab->dot_syms = eh; | |
3954 | } | |
65f38f15 AM |
3955 | } |
3956 | ||
3957 | return entry; | |
3958 | } | |
3959 | ||
3960 | /* Create a ppc64 ELF linker hash table. */ | |
3961 | ||
3962 | static struct bfd_link_hash_table * | |
4ce794b7 | 3963 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3964 | { |
3965 | struct ppc_link_hash_table *htab; | |
3966 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3967 | ||
4ce794b7 | 3968 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3969 | if (htab == NULL) |
3970 | return NULL; | |
3971 | ||
66eb6687 | 3972 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3973 | sizeof (struct ppc_link_hash_entry), |
3974 | PPC64_ELF_DATA)) | |
65f38f15 | 3975 | { |
e2d34d7d | 3976 | free (htab); |
65f38f15 AM |
3977 | return NULL; |
3978 | } | |
3979 | ||
721956f4 | 3980 | /* Init the stub hash table too. */ |
66eb6687 AM |
3981 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3982 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3983 | return NULL; |
3984 | ||
3985 | /* And the branch hash table. */ | |
66eb6687 AM |
3986 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3987 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3988 | return NULL; |
3989 | ||
3254fd24 AM |
3990 | /* Initializing two fields of the union is just cosmetic. We really |
3991 | only care about glist, but when compiled on a 32-bit host the | |
3992 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3993 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3994 | htab->elf.init_got_refcount.refcount = 0; |
3995 | htab->elf.init_got_refcount.glist = NULL; | |
3996 | htab->elf.init_plt_refcount.refcount = 0; | |
3997 | htab->elf.init_plt_refcount.glist = NULL; | |
3998 | htab->elf.init_got_offset.offset = 0; | |
3999 | htab->elf.init_got_offset.glist = NULL; | |
4000 | htab->elf.init_plt_offset.offset = 0; | |
4001 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4002 | |
65f38f15 AM |
4003 | return &htab->elf.root; |
4004 | } | |
4005 | ||
721956f4 AM |
4006 | /* Free the derived linker hash table. */ |
4007 | ||
4008 | static void | |
4ce794b7 | 4009 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
4010 | { |
4011 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
4012 | ||
4013 | bfd_hash_table_free (&ret->stub_hash_table); | |
4014 | bfd_hash_table_free (&ret->branch_hash_table); | |
4015 | _bfd_generic_link_hash_table_free (hash); | |
4016 | } | |
4017 | ||
e717da7e AM |
4018 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4019 | ||
4020 | void | |
4021 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
4022 | { | |
4023 | struct ppc_link_hash_table *htab; | |
4024 | ||
4025 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4026 | ||
4027 | /* Always hook our dynamic sections into the first bfd, which is the | |
4028 | linker created stub bfd. This ensures that the GOT header is at | |
4029 | the start of the output TOC section. */ | |
4030 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4031 | if (htab == NULL) |
4032 | return; | |
e717da7e AM |
4033 | htab->stub_bfd = abfd; |
4034 | htab->elf.dynobj = abfd; | |
4035 | } | |
4036 | ||
721956f4 AM |
4037 | /* Build a name for an entry in the stub hash table. */ |
4038 | ||
4039 | static char * | |
4ce794b7 AM |
4040 | ppc_stub_name (const asection *input_section, |
4041 | const asection *sym_sec, | |
4042 | const struct ppc_link_hash_entry *h, | |
4043 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4044 | { |
4045 | char *stub_name; | |
4046 | bfd_size_type len; | |
4047 | ||
4048 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4049 | offsets from a sym as a branch target? In fact, we could | |
4050 | probably assume the addend is always zero. */ | |
4051 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4052 | ||
4053 | if (h) | |
4054 | { | |
4055 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4056 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4057 | if (stub_name == NULL) |
4058 | return stub_name; | |
4059 | ||
4060 | sprintf (stub_name, "%08x.%s+%x", | |
4061 | input_section->id & 0xffffffff, | |
4062 | h->elf.root.root.string, | |
4063 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4064 | } |
4065 | else | |
4066 | { | |
ad8e1ba5 | 4067 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4068 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4069 | if (stub_name == NULL) |
4070 | return stub_name; | |
4071 | ||
4072 | sprintf (stub_name, "%08x.%x:%x+%x", | |
4073 | input_section->id & 0xffffffff, | |
4074 | sym_sec->id & 0xffffffff, | |
4075 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4076 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4077 | } |
ee75fd95 AM |
4078 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
4079 | stub_name[len - 2] = 0; | |
721956f4 AM |
4080 | return stub_name; |
4081 | } | |
4082 | ||
4083 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4084 | creating the stub name takes a bit of time. */ | |
4085 | ||
4086 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4087 | ppc_get_stub_entry (const asection *input_section, |
4088 | const asection *sym_sec, | |
039b3fef | 4089 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4090 | const Elf_Internal_Rela *rel, |
4091 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4092 | { |
4093 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4094 | const asection *id_sec; |
4095 | ||
4096 | /* If this input section is part of a group of sections sharing one | |
4097 | stub section, then use the id of the first section in the group. | |
4098 | Stub names need to include a section id, as there may well be | |
4099 | more than one stub used to reach say, printf, and we need to | |
4100 | distinguish between them. */ | |
4101 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4102 | ||
b3fac117 AM |
4103 | if (h != NULL && h->u.stub_cache != NULL |
4104 | && h->u.stub_cache->h == h | |
4105 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4106 | { |
b3fac117 | 4107 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4108 | } |
4109 | else | |
4110 | { | |
4111 | char *stub_name; | |
4112 | ||
4113 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4114 | if (stub_name == NULL) | |
4115 | return NULL; | |
4116 | ||
4117 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4118 | stub_name, FALSE, FALSE); |
721956f4 | 4119 | if (h != NULL) |
b3fac117 | 4120 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4121 | |
4122 | free (stub_name); | |
4123 | } | |
4124 | ||
4125 | return stub_entry; | |
4126 | } | |
4127 | ||
4128 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4129 | stub entry are initialised. */ | |
4130 | ||
4131 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4132 | ppc_add_stub (const char *stub_name, |
4133 | asection *section, | |
4134 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4135 | { |
4136 | asection *link_sec; | |
4137 | asection *stub_sec; | |
4138 | struct ppc_stub_hash_entry *stub_entry; | |
4139 | ||
4140 | link_sec = htab->stub_group[section->id].link_sec; | |
4141 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4142 | if (stub_sec == NULL) | |
4143 | { | |
4144 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4145 | if (stub_sec == NULL) | |
4146 | { | |
d4c88bbb | 4147 | size_t namelen; |
721956f4 AM |
4148 | bfd_size_type len; |
4149 | char *s_name; | |
4150 | ||
d4c88bbb AM |
4151 | namelen = strlen (link_sec->name); |
4152 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4153 | s_name = bfd_alloc (htab->stub_bfd, len); |
4154 | if (s_name == NULL) | |
4155 | return NULL; | |
4156 | ||
d4c88bbb AM |
4157 | memcpy (s_name, link_sec->name, namelen); |
4158 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4159 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4160 | if (stub_sec == NULL) | |
4161 | return NULL; | |
4162 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4163 | } | |
4164 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4165 | } | |
4166 | ||
4167 | /* Enter this entry into the linker stub hash table. */ | |
4168 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4169 | TRUE, FALSE); |
721956f4 AM |
4170 | if (stub_entry == NULL) |
4171 | { | |
d003868e AM |
4172 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
4173 | section->owner, stub_name); | |
721956f4 AM |
4174 | return NULL; |
4175 | } | |
4176 | ||
4177 | stub_entry->stub_sec = stub_sec; | |
4178 | stub_entry->stub_offset = 0; | |
4179 | stub_entry->id_sec = link_sec; | |
4180 | return stub_entry; | |
4181 | } | |
4182 | ||
82bd7b59 AM |
4183 | /* Create sections for linker generated code. */ |
4184 | ||
b34976b6 | 4185 | static bfd_boolean |
4ce794b7 | 4186 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4187 | { |
4188 | struct ppc_link_hash_table *htab; | |
4189 | flagword flags; | |
4190 | ||
4191 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4192 | if (htab == NULL) |
4193 | return FALSE; | |
82bd7b59 AM |
4194 | |
4195 | /* Create .sfpr for code to save and restore fp regs. */ | |
4196 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4197 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4198 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4199 | flags); | |
82bd7b59 | 4200 | if (htab->sfpr == NULL |
82bd7b59 | 4201 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4202 | return FALSE; |
82bd7b59 | 4203 | |
721956f4 | 4204 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4205 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4206 | flags); | |
4ce794b7 | 4207 | if (htab->glink == NULL |
ee4bf8d2 | 4208 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4209 | return FALSE; |
82bd7b59 | 4210 | |
e054468f AM |
4211 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
4212 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4213 | if (htab->iplt == NULL | |
4214 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4215 | return FALSE; | |
4216 | ||
4217 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4218 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4219 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4220 | ".rela.iplt", | |
4221 | flags); | |
4222 | if (htab->reliplt == NULL | |
4223 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4224 | return FALSE; | |
4225 | ||
c456f082 | 4226 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4227 | flags = (SEC_ALLOC | SEC_LOAD |
4228 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4229 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4230 | flags); | |
4ce794b7 | 4231 | if (htab->brlt == NULL |
4ce794b7 | 4232 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4233 | return FALSE; |
721956f4 | 4234 | |
e4e0193e | 4235 | if (!info->shared) |
c456f082 AM |
4236 | return TRUE; |
4237 | ||
e4e0193e AM |
4238 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4239 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4240 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4241 | ".rela.branch_lt", | |
4242 | flags); | |
e054468f | 4243 | if (htab->relbrlt == NULL |
c456f082 AM |
4244 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
4245 | return FALSE; | |
4246 | ||
b34976b6 | 4247 | return TRUE; |
82bd7b59 AM |
4248 | } |
4249 | ||
e717da7e AM |
4250 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4251 | not already done. */ | |
65f38f15 | 4252 | |
b34976b6 | 4253 | static bfd_boolean |
e717da7e | 4254 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4255 | { |
e717da7e AM |
4256 | asection *got, *relgot; |
4257 | flagword flags; | |
4258 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4259 | |
0c8d6e5c | 4260 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4261 | return FALSE; |
4dfe6ac6 NC |
4262 | if (htab == NULL) |
4263 | return FALSE; | |
0ffa91dd | 4264 | |
4ce794b7 | 4265 | if (!htab->got) |
e717da7e AM |
4266 | { |
4267 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4268 | return FALSE; | |
4269 | ||
4270 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4271 | if (!htab->got) | |
4272 | abort (); | |
4273 | } | |
4274 | ||
4275 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4276 | | SEC_LINKER_CREATED); | |
4277 | ||
c456f082 | 4278 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4279 | if (!got |
e717da7e AM |
4280 | || !bfd_set_section_alignment (abfd, got, 3)) |
4281 | return FALSE; | |
65f38f15 | 4282 | |
c456f082 AM |
4283 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4284 | flags | SEC_READONLY); | |
e717da7e | 4285 | if (!relgot |
e717da7e | 4286 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4287 | return FALSE; |
e717da7e AM |
4288 | |
4289 | ppc64_elf_tdata (abfd)->got = got; | |
4290 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4291 | return TRUE; |
65f38f15 | 4292 | } |
5bd4f169 | 4293 | |
82bd7b59 | 4294 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4295 | |
b34976b6 | 4296 | static bfd_boolean |
4ce794b7 | 4297 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4298 | { |
65f38f15 | 4299 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4300 | |
65f38f15 | 4301 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4302 | return FALSE; |
65f38f15 | 4303 | |
e717da7e | 4304 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4305 | if (htab == NULL) |
4306 | return FALSE; | |
4307 | ||
e717da7e AM |
4308 | if (!htab->got) |
4309 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4310 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4311 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4312 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4313 | if (!info->shared) |
4ce794b7 | 4314 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4315 | |
e717da7e | 4316 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4317 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4318 | abort (); |
4319 | ||
b34976b6 | 4320 | return TRUE; |
5bd4f169 AM |
4321 | } |
4322 | ||
b31867b6 AM |
4323 | /* Follow indirect and warning symbol links. */ |
4324 | ||
4325 | static inline struct bfd_link_hash_entry * | |
4326 | follow_link (struct bfd_link_hash_entry *h) | |
4327 | { | |
4328 | while (h->type == bfd_link_hash_indirect | |
4329 | || h->type == bfd_link_hash_warning) | |
4330 | h = h->u.i.link; | |
4331 | return h; | |
4332 | } | |
4333 | ||
4334 | static inline struct elf_link_hash_entry * | |
4335 | elf_follow_link (struct elf_link_hash_entry *h) | |
4336 | { | |
4337 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4338 | } | |
4339 | ||
4340 | static inline struct ppc_link_hash_entry * | |
4341 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4342 | { | |
4343 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4344 | } | |
4345 | ||
40d16e0b AM |
4346 | /* Merge PLT info on FROM with that on TO. */ |
4347 | ||
4348 | static void | |
4349 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4350 | struct ppc_link_hash_entry *to) | |
4351 | { | |
4352 | if (from->elf.plt.plist != NULL) | |
4353 | { | |
4354 | if (to->elf.plt.plist != NULL) | |
4355 | { | |
4356 | struct plt_entry **entp; | |
4357 | struct plt_entry *ent; | |
4358 | ||
4359 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4360 | { | |
4361 | struct plt_entry *dent; | |
4362 | ||
4363 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4364 | if (dent->addend == ent->addend) | |
4365 | { | |
4366 | dent->plt.refcount += ent->plt.refcount; | |
4367 | *entp = ent->next; | |
4368 | break; | |
4369 | } | |
4370 | if (dent == NULL) | |
4371 | entp = &ent->next; | |
4372 | } | |
4373 | *entp = to->elf.plt.plist; | |
4374 | } | |
4375 | ||
4376 | to->elf.plt.plist = from->elf.plt.plist; | |
4377 | from->elf.plt.plist = NULL; | |
4378 | } | |
4379 | } | |
4380 | ||
65f38f15 AM |
4381 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4382 | ||
4383 | static void | |
fcfa13d2 AM |
4384 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4385 | struct elf_link_hash_entry *dir, | |
4386 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4387 | { |
4388 | struct ppc_link_hash_entry *edir, *eind; | |
4389 | ||
4390 | edir = (struct ppc_link_hash_entry *) dir; | |
4391 | eind = (struct ppc_link_hash_entry *) ind; | |
4392 | ||
411e1bfb | 4393 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4394 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4395 | { |
bbd7ec4a AM |
4396 | if (edir->dyn_relocs != NULL) |
4397 | { | |
4398 | struct ppc_dyn_relocs **pp; | |
4399 | struct ppc_dyn_relocs *p; | |
4400 | ||
fcfa13d2 | 4401 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4402 | list. Merge any entries against the same section. */ |
4403 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4404 | { | |
4405 | struct ppc_dyn_relocs *q; | |
4406 | ||
4407 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4408 | if (q->sec == p->sec) | |
4409 | { | |
4410 | q->pc_count += p->pc_count; | |
4411 | q->count += p->count; | |
4412 | *pp = p->next; | |
4413 | break; | |
4414 | } | |
4415 | if (q == NULL) | |
4416 | pp = &p->next; | |
4417 | } | |
4418 | *pp = edir->dyn_relocs; | |
4419 | } | |
4420 | ||
65f38f15 AM |
4421 | edir->dyn_relocs = eind->dyn_relocs; |
4422 | eind->dyn_relocs = NULL; | |
4423 | } | |
65f38f15 | 4424 | |
6349e628 AM |
4425 | edir->is_func |= eind->is_func; |
4426 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4427 | edir->tls_mask |= eind->tls_mask; |
b31867b6 AM |
4428 | if (eind->oh != NULL) |
4429 | edir->oh = ppc_follow_link (eind->oh); | |
6349e628 | 4430 | |
81848ca0 | 4431 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4432 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4433 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4434 | if (!(ELIMINATE_COPY_RELOCS |
4435 | && eind->elf.root.type != bfd_link_hash_indirect | |
4436 | && edir->elf.dynamic_adjusted)) | |
4437 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4438 | |
f5385ebf AM |
4439 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4440 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4441 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4442 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4443 | |
4444 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4445 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4446 | return; | |
4447 | ||
81848ca0 AM |
4448 | /* Copy over got entries that we may have already seen to the |
4449 | symbol which just became indirect. */ | |
411e1bfb AM |
4450 | if (eind->elf.got.glist != NULL) |
4451 | { | |
4452 | if (edir->elf.got.glist != NULL) | |
4453 | { | |
4454 | struct got_entry **entp; | |
4455 | struct got_entry *ent; | |
4456 | ||
4457 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4458 | { | |
4459 | struct got_entry *dent; | |
4460 | ||
4461 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4462 | if (dent->addend == ent->addend | |
e717da7e | 4463 | && dent->owner == ent->owner |
411e1bfb AM |
4464 | && dent->tls_type == ent->tls_type) |
4465 | { | |
4466 | dent->got.refcount += ent->got.refcount; | |
4467 | *entp = ent->next; | |
4468 | break; | |
4469 | } | |
4470 | if (dent == NULL) | |
4471 | entp = &ent->next; | |
4472 | } | |
4473 | *entp = edir->elf.got.glist; | |
4474 | } | |
4475 | ||
4476 | edir->elf.got.glist = eind->elf.got.glist; | |
4477 | eind->elf.got.glist = NULL; | |
4478 | } | |
4479 | ||
4480 | /* And plt entries. */ | |
40d16e0b | 4481 | move_plt_plist (eind, edir); |
411e1bfb | 4482 | |
fcfa13d2 | 4483 | if (eind->elf.dynindx != -1) |
411e1bfb | 4484 | { |
fcfa13d2 AM |
4485 | if (edir->elf.dynindx != -1) |
4486 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4487 | edir->elf.dynstr_index); | |
411e1bfb AM |
4488 | edir->elf.dynindx = eind->elf.dynindx; |
4489 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4490 | eind->elf.dynindx = -1; | |
4491 | eind->elf.dynstr_index = 0; | |
4492 | } | |
411e1bfb AM |
4493 | } |
4494 | ||
8387904d AM |
4495 | /* Find the function descriptor hash entry from the given function code |
4496 | hash entry FH. Link the entries via their OH fields. */ | |
4497 | ||
4498 | static struct ppc_link_hash_entry * | |
b31867b6 | 4499 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4500 | { |
4501 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4502 | ||
4503 | if (fdh == NULL) | |
4504 | { | |
4505 | const char *fd_name = fh->elf.root.root.string + 1; | |
4506 | ||
4507 | fdh = (struct ppc_link_hash_entry *) | |
4508 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4509 | if (fdh == NULL) |
4510 | return fdh; | |
4511 | ||
4512 | fdh->is_func_descriptor = 1; | |
4513 | fdh->oh = fh; | |
4514 | fh->is_func = 1; | |
4515 | fh->oh = fdh; | |
8387904d AM |
4516 | } |
4517 | ||
b31867b6 | 4518 | return ppc_follow_link (fdh); |
8387904d AM |
4519 | } |
4520 | ||
bb700d78 AM |
4521 | /* Make a fake function descriptor sym for the code sym FH. */ |
4522 | ||
4523 | static struct ppc_link_hash_entry * | |
4524 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4525 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4526 | { |
4527 | bfd *abfd; | |
4528 | asymbol *newsym; | |
4529 | struct bfd_link_hash_entry *bh; | |
4530 | struct ppc_link_hash_entry *fdh; | |
4531 | ||
4532 | abfd = fh->elf.root.u.undef.abfd; | |
4533 | newsym = bfd_make_empty_symbol (abfd); | |
4534 | newsym->name = fh->elf.root.root.string + 1; | |
4535 | newsym->section = bfd_und_section_ptr; | |
4536 | newsym->value = 0; | |
908b32fc | 4537 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4538 | |
4539 | bh = NULL; | |
4540 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4541 | newsym->flags, newsym->section, | |
4542 | newsym->value, NULL, FALSE, FALSE, | |
4543 | &bh)) | |
4544 | return NULL; | |
4545 | ||
4546 | fdh = (struct ppc_link_hash_entry *) bh; | |
4547 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4548 | fdh->fake = 1; |
4549 | fdh->is_func_descriptor = 1; | |
4550 | fdh->oh = fh; | |
4551 | fh->is_func = 1; | |
4552 | fh->oh = fdh; | |
bb700d78 AM |
4553 | return fdh; |
4554 | } | |
4555 | ||
8387904d AM |
4556 | /* Fix function descriptor symbols defined in .opd sections to be |
4557 | function type. */ | |
555cd476 AM |
4558 | |
4559 | static bfd_boolean | |
b3fac117 | 4560 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
e054468f | 4561 | struct bfd_link_info *info, |
555cd476 | 4562 | Elf_Internal_Sym *isym, |
b3fac117 | 4563 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4564 | flagword *flags ATTRIBUTE_UNUSED, |
4565 | asection **sec, | |
4566 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4567 | { | |
e054468f AM |
4568 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
4569 | elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE; | |
4570 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) | |
4571 | ; | |
4572 | else if (*sec != NULL | |
4573 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4574 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4575 | |
555cd476 AM |
4576 | return TRUE; |
4577 | } | |
4578 | ||
8387904d | 4579 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4580 | inclusion of a new ABI object archive that defines "bar". |
4581 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4582 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4583 | |
4584 | static struct elf_link_hash_entry * | |
4585 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4586 | struct bfd_link_info *info, | |
4587 | const char *name) | |
4588 | { | |
4589 | struct elf_link_hash_entry *h; | |
4590 | char *dot_name; | |
4591 | size_t len; | |
4592 | ||
4593 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4594 | if (h != NULL |
4595 | /* Don't return this sym if it is a fake function descriptor | |
4596 | created by add_symbol_adjust. */ | |
4597 | && !(h->root.type == bfd_link_hash_undefweak | |
4598 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4599 | return h; |
4600 | ||
4601 | if (name[0] == '.') | |
4602 | return h; | |
4603 | ||
4604 | len = strlen (name); | |
4605 | dot_name = bfd_alloc (abfd, len + 2); | |
4606 | if (dot_name == NULL) | |
4607 | return (struct elf_link_hash_entry *) 0 - 1; | |
4608 | dot_name[0] = '.'; | |
4609 | memcpy (dot_name + 1, name, len + 1); | |
4610 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4611 | bfd_release (abfd, dot_name); | |
4612 | return h; | |
4613 | } | |
4614 | ||
4615 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4616 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4617 | are made weak. This stops later archive searches from including an | |
4618 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4619 | prevents the linker complaining about undefined symbols. |
4620 | We also check and correct mismatched symbol visibility here. The | |
4621 | most restrictive visibility of the function descriptor and the | |
4622 | function entry symbol is used. */ | |
8387904d AM |
4623 | |
4624 | static bfd_boolean | |
b3fac117 | 4625 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4626 | { |
8387904d AM |
4627 | struct ppc_link_hash_table *htab; |
4628 | struct ppc_link_hash_entry *fdh; | |
4629 | ||
b3fac117 | 4630 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4631 | return TRUE; |
4632 | ||
b3fac117 AM |
4633 | if (eh->elf.root.type == bfd_link_hash_warning) |
4634 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4635 | |
b3fac117 AM |
4636 | if (eh->elf.root.root.string[0] != '.') |
4637 | abort (); | |
8387904d | 4638 | |
b3fac117 | 4639 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4640 | if (htab == NULL) |
4641 | return FALSE; | |
4642 | ||
b31867b6 AM |
4643 | fdh = lookup_fdh (eh, htab); |
4644 | if (fdh == NULL) | |
4645 | { | |
4646 | if (!info->relocatable | |
4647 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4648 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4649 | && eh->elf.ref_regular) | |
4650 | { | |
4651 | /* Make an undefweak function descriptor sym, which is enough to | |
4652 | pull in an --as-needed shared lib, but won't cause link | |
4653 | errors. Archives are handled elsewhere. */ | |
4654 | fdh = make_fdh (info, eh); | |
4655 | if (fdh == NULL) | |
4656 | return FALSE; | |
4657 | fdh->elf.ref_regular = 1; | |
4658 | } | |
bb700d78 | 4659 | } |
b31867b6 | 4660 | else |
8387904d | 4661 | { |
35b0ce59 AM |
4662 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4663 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4664 | if (entry_vis < descr_vis) | |
4665 | fdh->elf.other += entry_vis - descr_vis; | |
4666 | else if (entry_vis > descr_vis) | |
4667 | eh->elf.other += descr_vis - entry_vis; | |
4668 | ||
e87d886e AM |
4669 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4670 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4671 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4672 | { |
4673 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4674 | eh->was_undefined = 1; | |
4675 | htab->twiddled_syms = 1; | |
4676 | } | |
8387904d | 4677 | } |
99877b66 | 4678 | |
8387904d AM |
4679 | return TRUE; |
4680 | } | |
4681 | ||
b3fac117 AM |
4682 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4683 | ||
8387904d | 4684 | static bfd_boolean |
7d9616d7 | 4685 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4686 | { |
99877b66 | 4687 | struct ppc_link_hash_table *htab; |
b3fac117 | 4688 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4689 | |
0c8d6e5c | 4690 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4691 | return TRUE; |
4dfe6ac6 NC |
4692 | htab = ppc_hash_table (info); |
4693 | if (htab == NULL) | |
4694 | return FALSE; | |
35b0ce59 | 4695 | |
0c8d6e5c | 4696 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4697 | { |
4698 | p = &htab->dot_syms; | |
4699 | while ((eh = *p) != NULL) | |
4700 | { | |
4701 | *p = NULL; | |
4702 | if (!add_symbol_adjust (eh, info)) | |
4703 | return FALSE; | |
4704 | p = &eh->u.next_dot_sym; | |
4705 | } | |
4706 | } | |
4707 | ||
4708 | /* Clear the list for non-ppc64 input files. */ | |
4709 | p = &htab->dot_syms; | |
4710 | while ((eh = *p) != NULL) | |
4711 | { | |
4712 | *p = NULL; | |
4713 | p = &eh->u.next_dot_sym; | |
4714 | } | |
99877b66 AM |
4715 | |
4716 | /* We need to fix the undefs list for any syms we have twiddled to | |
4717 | undef_weak. */ | |
4718 | if (htab->twiddled_syms) | |
4719 | { | |
77cfaee6 | 4720 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4721 | htab->twiddled_syms = 0; |
4722 | } | |
b3fac117 | 4723 | return TRUE; |
8387904d AM |
4724 | } |
4725 | ||
97fed1c9 JJ |
4726 | /* Undo hash table changes when an --as-needed input file is determined |
4727 | not to be needed. */ | |
4728 | ||
4729 | static bfd_boolean | |
4730 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4731 | struct bfd_link_info *info) | |
4732 | { | |
4dfe6ac6 NC |
4733 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
4734 | ||
4735 | if (htab == NULL) | |
4736 | return FALSE; | |
4737 | ||
4738 | htab->dot_syms = NULL; | |
97fed1c9 JJ |
4739 | return TRUE; |
4740 | } | |
4741 | ||
e054468f | 4742 | static struct plt_entry ** |
4ce794b7 AM |
4743 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4744 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4745 | { |
4746 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4747 | struct plt_entry **local_plt; |
e7b938ca | 4748 | char *local_got_tls_masks; |
411e1bfb AM |
4749 | |
4750 | if (local_got_ents == NULL) | |
4751 | { | |
4752 | bfd_size_type size = symtab_hdr->sh_info; | |
4753 | ||
e054468f AM |
4754 | size *= (sizeof (*local_got_ents) |
4755 | + sizeof (*local_plt) | |
4756 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4757 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4758 | if (local_got_ents == NULL) |
e054468f | 4759 | return NULL; |
411e1bfb AM |
4760 | elf_local_got_ents (abfd) = local_got_ents; |
4761 | } | |
4762 | ||
e054468f | 4763 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4764 | { |
4765 | struct got_entry *ent; | |
4766 | ||
4767 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4768 | if (ent->addend == r_addend |
4769 | && ent->owner == abfd | |
4770 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4771 | break; |
4772 | if (ent == NULL) | |
4773 | { | |
4774 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4775 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4776 | if (ent == NULL) |
4777 | return FALSE; | |
4778 | ent->next = local_got_ents[r_symndx]; | |
4779 | ent->addend = r_addend; | |
e717da7e | 4780 | ent->owner = abfd; |
411e1bfb | 4781 | ent->tls_type = tls_type; |
927be08e | 4782 | ent->is_indirect = FALSE; |
411e1bfb AM |
4783 | ent->got.refcount = 0; |
4784 | local_got_ents[r_symndx] = ent; | |
4785 | } | |
4786 | ent->got.refcount += 1; | |
4787 | } | |
4788 | ||
e054468f AM |
4789 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
4790 | local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 4791 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4792 | |
4793 | return local_plt + r_symndx; | |
65f38f15 AM |
4794 | } |
4795 | ||
411e1bfb | 4796 | static bfd_boolean |
e054468f | 4797 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4798 | { |
411e1bfb | 4799 | struct plt_entry *ent; |
1e2f5b6e | 4800 | |
e054468f | 4801 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4802 | if (ent->addend == addend) |
4803 | break; | |
4804 | if (ent == NULL) | |
1e2f5b6e | 4805 | { |
411e1bfb | 4806 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4807 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4808 | if (ent == NULL) |
4809 | return FALSE; | |
e054468f | 4810 | ent->next = *plist; |
411e1bfb AM |
4811 | ent->addend = addend; |
4812 | ent->plt.refcount = 0; | |
e054468f | 4813 | *plist = ent; |
1e2f5b6e | 4814 | } |
411e1bfb | 4815 | ent->plt.refcount += 1; |
b34976b6 | 4816 | return TRUE; |
1e2f5b6e AM |
4817 | } |
4818 | ||
e054468f AM |
4819 | static bfd_boolean |
4820 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4821 | { | |
4822 | return (r_type == R_PPC64_REL24 | |
4823 | || r_type == R_PPC64_REL14 | |
4824 | || r_type == R_PPC64_REL14_BRTAKEN | |
4825 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4826 | || r_type == R_PPC64_ADDR24 | |
4827 | || r_type == R_PPC64_ADDR14 | |
4828 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4829 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4830 | } | |
4831 | ||
5bd4f169 | 4832 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4833 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4834 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4835 | |
b34976b6 | 4836 | static bfd_boolean |
4ce794b7 AM |
4837 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4838 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4839 | { |
65f38f15 | 4840 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4841 | Elf_Internal_Shdr *symtab_hdr; |
4842 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4843 | const Elf_Internal_Rela *rel; | |
4844 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4845 | asection *sreloc; |
1e2f5b6e | 4846 | asection **opd_sym_map; |
3a71aa26 | 4847 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4848 | |
1049f94e | 4849 | if (info->relocatable) |
b34976b6 | 4850 | return TRUE; |
5bd4f169 | 4851 | |
680a3378 AM |
4852 | /* Don't do anything special with non-loaded, non-alloced sections. |
4853 | In particular, any relocs in such sections should not affect GOT | |
4854 | and PLT reference counting (ie. we don't allow them to create GOT | |
4855 | or PLT entries), there's no possibility or desire to optimize TLS | |
4856 | relocs, and there's not much point in propagating relocs to shared | |
4857 | libs that the dynamic linker won't relocate. */ | |
4858 | if ((sec->flags & SEC_ALLOC) == 0) | |
4859 | return TRUE; | |
4860 | ||
0c8d6e5c | 4861 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4862 | |
65f38f15 | 4863 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4864 | if (htab == NULL) |
4865 | return FALSE; | |
4866 | ||
3a71aa26 AM |
4867 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4868 | FALSE, FALSE, TRUE); | |
4869 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4870 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4871 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4872 | |
4873 | sym_hashes = elf_sym_hashes (abfd); | |
4874 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4875 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4876 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4877 | |
4878 | sreloc = NULL; | |
1e2f5b6e AM |
4879 | opd_sym_map = NULL; |
4880 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4881 | { | |
4882 | /* Garbage collection needs some extra help with .opd sections. | |
4883 | We don't want to necessarily keep everything referenced by | |
4884 | relocs in .opd, as that would keep all functions. Instead, | |
4885 | if we reference an .opd symbol (a function descriptor), we | |
4886 | want to keep the function code symbol's section. This is | |
4887 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4888 | information about the associated function section. */ |
1e2f5b6e AM |
4889 | bfd_size_type amt; |
4890 | ||
74f0fb50 | 4891 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4892 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4893 | if (opd_sym_map == NULL) |
b34976b6 | 4894 | return FALSE; |
74f0fb50 | 4895 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4896 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4897 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4898 | } |
5bd4f169 | 4899 | |
82bd7b59 AM |
4900 | if (htab->sfpr == NULL |
4901 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4902 | return FALSE; |
82bd7b59 | 4903 | |
5bd4f169 AM |
4904 | rel_end = relocs + sec->reloc_count; |
4905 | for (rel = relocs; rel < rel_end; rel++) | |
4906 | { | |
4907 | unsigned long r_symndx; | |
4908 | struct elf_link_hash_entry *h; | |
04c9666a | 4909 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4910 | int tls_type; |
7c8fe5c4 | 4911 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4912 | struct plt_entry **ifunc; |
5bd4f169 AM |
4913 | |
4914 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4915 | if (r_symndx < symtab_hdr->sh_info) | |
4916 | h = NULL; | |
4917 | else | |
973a3492 L |
4918 | { |
4919 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4920 | h = elf_follow_link (h); |
973a3492 | 4921 | } |
5bd4f169 | 4922 | |
727fc41e | 4923 | tls_type = 0; |
e054468f | 4924 | ifunc = NULL; |
25f23106 AM |
4925 | if (h != NULL) |
4926 | { | |
4927 | if (h->type == STT_GNU_IFUNC) | |
4928 | { | |
4929 | h->needs_plt = 1; | |
4930 | ifunc = &h->plt.plist; | |
4931 | } | |
4932 | } | |
4933 | else | |
4934 | { | |
4935 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4936 | abfd, r_symndx); | |
4937 | if (isym == NULL) | |
4938 | return FALSE; | |
4939 | ||
4940 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4941 | { | |
4942 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4943 | rel->r_addend, PLT_IFUNC); | |
4944 | if (ifunc == NULL) | |
4945 | return FALSE; | |
4946 | } | |
4947 | } | |
4ce794b7 | 4948 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
4949 | if (is_branch_reloc (r_type)) |
4950 | { | |
4951 | if (h != NULL && (h == tga || h == dottga)) | |
4952 | { | |
4953 | if (rel != relocs | |
4954 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4955 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4956 | /* We have a new-style __tls_get_addr call with a marker | |
4957 | reloc. */ | |
4958 | ; | |
4959 | else | |
4960 | /* Mark this section as having an old-style call. */ | |
4961 | sec->has_tls_get_addr_call = 1; | |
4962 | } | |
727fc41e | 4963 | |
e054468f | 4964 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
4965 | if (ifunc != NULL |
4966 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
4967 | return FALSE; | |
4968 | } | |
727fc41e | 4969 | |
a33d1f77 | 4970 | switch (r_type) |
5bd4f169 | 4971 | { |
727fc41e AM |
4972 | case R_PPC64_TLSGD: |
4973 | case R_PPC64_TLSLD: | |
4974 | /* These special tls relocs tie a call to __tls_get_addr with | |
4975 | its parameter symbol. */ | |
4976 | break; | |
4977 | ||
411e1bfb AM |
4978 | case R_PPC64_GOT_TLSLD16: |
4979 | case R_PPC64_GOT_TLSLD16_LO: | |
4980 | case R_PPC64_GOT_TLSLD16_HI: | |
4981 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4982 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4983 | goto dogottls; |
4984 | ||
4985 | case R_PPC64_GOT_TLSGD16: | |
4986 | case R_PPC64_GOT_TLSGD16_LO: | |
4987 | case R_PPC64_GOT_TLSGD16_HI: | |
4988 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4989 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4990 | goto dogottls; |
4991 | ||
4992 | case R_PPC64_GOT_TPREL16_DS: | |
4993 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4994 | case R_PPC64_GOT_TPREL16_HI: | |
4995 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4996 | if (!info->executable) |
411e1bfb AM |
4997 | info->flags |= DF_STATIC_TLS; |
4998 | tls_type = TLS_TLS | TLS_TPREL; | |
4999 | goto dogottls; | |
5000 | ||
5001 | case R_PPC64_GOT_DTPREL16_DS: | |
5002 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5003 | case R_PPC64_GOT_DTPREL16_HI: | |
5004 | case R_PPC64_GOT_DTPREL16_HA: | |
5005 | tls_type = TLS_TLS | TLS_DTPREL; | |
5006 | dogottls: | |
5007 | sec->has_tls_reloc = 1; | |
5008 | /* Fall thru */ | |
5009 | ||
5bd4f169 | 5010 | case R_PPC64_GOT16: |
5bd4f169 | 5011 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5012 | case R_PPC64_GOT16_HA: |
5013 | case R_PPC64_GOT16_HI: | |
5014 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5015 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5016 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5017 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5018 | if (r_type == R_PPC64_GOT_TLSLD16 |
5019 | || r_type == R_PPC64_GOT_TLSGD16 | |
5020 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5021 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5022 | || r_type == R_PPC64_GOT16 | |
5023 | || r_type == R_PPC64_GOT16_DS) | |
5024 | { | |
5025 | htab->do_multi_toc = 1; | |
5026 | sec->has_small_toc_reloc = 1; | |
5027 | } | |
5028 | ||
e717da7e AM |
5029 | if (ppc64_elf_tdata (abfd)->got == NULL |
5030 | && !create_got_section (abfd, info)) | |
b34976b6 | 5031 | return FALSE; |
5bd4f169 AM |
5032 | |
5033 | if (h != NULL) | |
5034 | { | |
411e1bfb AM |
5035 | struct ppc_link_hash_entry *eh; |
5036 | struct got_entry *ent; | |
65f38f15 | 5037 | |
411e1bfb AM |
5038 | eh = (struct ppc_link_hash_entry *) h; |
5039 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5040 | if (ent->addend == rel->r_addend | |
e717da7e | 5041 | && ent->owner == abfd |
411e1bfb AM |
5042 | && ent->tls_type == tls_type) |
5043 | break; | |
5044 | if (ent == NULL) | |
5bd4f169 | 5045 | { |
411e1bfb | 5046 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5047 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5048 | if (ent == NULL) |
b34976b6 | 5049 | return FALSE; |
411e1bfb AM |
5050 | ent->next = eh->elf.got.glist; |
5051 | ent->addend = rel->r_addend; | |
e717da7e | 5052 | ent->owner = abfd; |
411e1bfb | 5053 | ent->tls_type = tls_type; |
927be08e | 5054 | ent->is_indirect = FALSE; |
411e1bfb AM |
5055 | ent->got.refcount = 0; |
5056 | eh->elf.got.glist = ent; | |
5bd4f169 | 5057 | } |
411e1bfb | 5058 | ent->got.refcount += 1; |
e7b938ca | 5059 | eh->tls_mask |= tls_type; |
5bd4f169 | 5060 | } |
411e1bfb AM |
5061 | else |
5062 | /* This is a global offset table entry for a local symbol. */ | |
5063 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5064 | rel->r_addend, tls_type)) | |
5065 | return FALSE; | |
5bd4f169 AM |
5066 | break; |
5067 | ||
5bd4f169 | 5068 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5069 | case R_PPC64_PLT16_HI: |
5070 | case R_PPC64_PLT16_LO: | |
5071 | case R_PPC64_PLT32: | |
5072 | case R_PPC64_PLT64: | |
5bd4f169 | 5073 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5074 | actually build the entry in adjust_dynamic_symbol, |
5075 | because this might be a case of linking PIC code without | |
5076 | linking in any dynamic objects, in which case we don't | |
5077 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5078 | if (h == NULL) |
5079 | { | |
5080 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5081 | table entry for a local symbol. */ |
5bd4f169 | 5082 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5083 | return FALSE; |
5bd4f169 | 5084 | } |
411e1bfb | 5085 | else |
e054468f AM |
5086 | { |
5087 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5088 | return FALSE; | |
5089 | h->needs_plt = 1; | |
5090 | if (h->root.root.string[0] == '.' | |
5091 | && h->root.root.string[1] != '\0') | |
5092 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5093 | } | |
5bd4f169 AM |
5094 | break; |
5095 | ||
5096 | /* The following relocations don't need to propagate the | |
5097 | relocation if linking a shared object since they are | |
5098 | section relative. */ | |
5099 | case R_PPC64_SECTOFF: | |
5100 | case R_PPC64_SECTOFF_LO: | |
5101 | case R_PPC64_SECTOFF_HI: | |
5102 | case R_PPC64_SECTOFF_HA: | |
5103 | case R_PPC64_SECTOFF_DS: | |
5104 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5105 | case R_PPC64_DTPREL16: |
5106 | case R_PPC64_DTPREL16_LO: | |
5107 | case R_PPC64_DTPREL16_HI: | |
5108 | case R_PPC64_DTPREL16_HA: | |
5109 | case R_PPC64_DTPREL16_DS: | |
5110 | case R_PPC64_DTPREL16_LO_DS: | |
5111 | case R_PPC64_DTPREL16_HIGHER: | |
5112 | case R_PPC64_DTPREL16_HIGHERA: | |
5113 | case R_PPC64_DTPREL16_HIGHEST: | |
5114 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5115 | break; |
5116 | ||
ad8e1ba5 | 5117 | /* Nor do these. */ |
25f23106 AM |
5118 | case R_PPC64_REL16: |
5119 | case R_PPC64_REL16_LO: | |
5120 | case R_PPC64_REL16_HI: | |
5121 | case R_PPC64_REL16_HA: | |
5122 | break; | |
5123 | ||
ad8e1ba5 | 5124 | case R_PPC64_TOC16: |
33c0ec9d AM |
5125 | case R_PPC64_TOC16_DS: |
5126 | htab->do_multi_toc = 1; | |
5127 | sec->has_small_toc_reloc = 1; | |
ad8e1ba5 AM |
5128 | case R_PPC64_TOC16_LO: |
5129 | case R_PPC64_TOC16_HI: | |
5130 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5131 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5132 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5133 | break; |
5134 | ||
5bd4f169 AM |
5135 | /* This relocation describes the C++ object vtable hierarchy. |
5136 | Reconstruct it for later use during GC. */ | |
5137 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5138 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5139 | return FALSE; |
5bd4f169 AM |
5140 | break; |
5141 | ||
5142 | /* This relocation describes which C++ vtable entries are actually | |
5143 | used. Record for later use during GC. */ | |
5144 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5145 | BFD_ASSERT (h != NULL); |
5146 | if (h != NULL | |
5147 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5148 | return FALSE; |
5bd4f169 AM |
5149 | break; |
5150 | ||
721956f4 AM |
5151 | case R_PPC64_REL14: |
5152 | case R_PPC64_REL14_BRTAKEN: | |
5153 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5154 | { |
5155 | asection *dest = NULL; | |
5156 | ||
5157 | /* Heuristic: If jumping outside our section, chances are | |
5158 | we are going to need a stub. */ | |
5159 | if (h != NULL) | |
5160 | { | |
5161 | /* If the sym is weak it may be overridden later, so | |
5162 | don't assume we know where a weak sym lives. */ | |
5163 | if (h->root.type == bfd_link_hash_defined) | |
5164 | dest = h->root.u.def.section; | |
5165 | } | |
5166 | else | |
87d72d41 AM |
5167 | { |
5168 | Elf_Internal_Sym *isym; | |
5169 | ||
5170 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5171 | abfd, r_symndx); | |
5172 | if (isym == NULL) | |
5173 | return FALSE; | |
5174 | ||
5175 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5176 | } | |
5177 | ||
220c76dd | 5178 | if (dest != sec) |
7c8fe5c4 | 5179 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5180 | } |
721956f4 AM |
5181 | /* Fall through. */ |
5182 | ||
5d1634d7 | 5183 | case R_PPC64_REL24: |
e054468f | 5184 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5185 | { |
5186 | /* We may need a .plt entry if the function this reloc | |
5187 | refers to is in a shared lib. */ | |
e054468f | 5188 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5189 | return FALSE; |
e054468f AM |
5190 | h->needs_plt = 1; |
5191 | if (h->root.root.string[0] == '.' | |
5192 | && h->root.root.string[1] != '\0') | |
5193 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5194 | if (h == tga || h == dottga) |
411e1bfb | 5195 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5196 | } |
5197 | break; | |
5198 | ||
5199 | case R_PPC64_TPREL64: | |
5200 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5201 | if (!info->executable) |
411e1bfb AM |
5202 | info->flags |= DF_STATIC_TLS; |
5203 | goto dotlstoc; | |
5204 | ||
5205 | case R_PPC64_DTPMOD64: | |
5206 | if (rel + 1 < rel_end | |
5207 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5208 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5209 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5210 | else |
951fd09b | 5211 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5212 | goto dotlstoc; |
5213 | ||
5214 | case R_PPC64_DTPREL64: | |
5215 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5216 | if (rel != relocs | |
5217 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5218 | && rel[-1].r_offset == rel->r_offset - 8) | |
5219 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5220 | Don't mark with TLS_DTPREL. */ | |
5221 | goto dodyn; | |
5222 | ||
5223 | dotlstoc: | |
5224 | sec->has_tls_reloc = 1; | |
5225 | if (h != NULL) | |
5226 | { | |
5227 | struct ppc_link_hash_entry *eh; | |
5228 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5229 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5230 | } |
5231 | else | |
5232 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5233 | rel->r_addend, tls_type)) | |
5234 | return FALSE; | |
5235 | ||
7c8fe5c4 AM |
5236 | ppc64_sec = ppc64_elf_section_data (sec); |
5237 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5238 | { |
3a71aa26 AM |
5239 | bfd_size_type amt; |
5240 | ||
e7b938ca | 5241 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5242 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5243 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5244 | if (ppc64_sec->u.toc.symndx == NULL) | |
5245 | return FALSE; | |
5246 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5247 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5248 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5249 | return FALSE; |
7c8fe5c4 AM |
5250 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5251 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5252 | } |
5253 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5254 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5255 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5256 | |
5257 | /* Mark the second slot of a GD or LD entry. | |
5258 | -1 to indicate GD and -2 to indicate LD. */ | |
5259 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5260 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5261 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5262 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5263 | goto dodyn; |
5264 | ||
5265 | case R_PPC64_TPREL16: | |
5266 | case R_PPC64_TPREL16_LO: | |
5267 | case R_PPC64_TPREL16_HI: | |
5268 | case R_PPC64_TPREL16_HA: | |
5269 | case R_PPC64_TPREL16_DS: | |
5270 | case R_PPC64_TPREL16_LO_DS: | |
5271 | case R_PPC64_TPREL16_HIGHER: | |
5272 | case R_PPC64_TPREL16_HIGHERA: | |
5273 | case R_PPC64_TPREL16_HIGHEST: | |
5274 | case R_PPC64_TPREL16_HIGHESTA: | |
5275 | if (info->shared) | |
5276 | { | |
1d483afe AM |
5277 | if (!info->executable) |
5278 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5279 | goto dodyn; |
5d1634d7 AM |
5280 | } |
5281 | break; | |
5282 | ||
e86ce104 | 5283 | case R_PPC64_ADDR64: |
1e2f5b6e | 5284 | if (opd_sym_map != NULL |
1e2f5b6e | 5285 | && rel + 1 < rel_end |
4ce794b7 | 5286 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5287 | { |
8387904d AM |
5288 | if (h != NULL) |
5289 | { | |
5290 | if (h->root.root.string[0] == '.' | |
5291 | && h->root.root.string[1] != 0 | |
b31867b6 | 5292 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5293 | ; |
5294 | else | |
5295 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5296 | } | |
5297 | else | |
5298 | { | |
5299 | asection *s; | |
87d72d41 | 5300 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5301 | |
87d72d41 AM |
5302 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5303 | abfd, r_symndx); | |
5304 | if (isym == NULL) | |
8387904d | 5305 | return FALSE; |
87d72d41 AM |
5306 | |
5307 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5308 | if (s != NULL && s != sec) | |
3f764659 | 5309 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5310 | } |
1e2f5b6e | 5311 | } |
e86ce104 AM |
5312 | /* Fall through. */ |
5313 | ||
04c9666a | 5314 | case R_PPC64_REL30: |
5bd4f169 | 5315 | case R_PPC64_REL32: |
04c9666a | 5316 | case R_PPC64_REL64: |
65f38f15 AM |
5317 | case R_PPC64_ADDR14: |
5318 | case R_PPC64_ADDR14_BRNTAKEN: | |
5319 | case R_PPC64_ADDR14_BRTAKEN: | |
5320 | case R_PPC64_ADDR16: | |
5321 | case R_PPC64_ADDR16_DS: | |
5322 | case R_PPC64_ADDR16_HA: | |
5323 | case R_PPC64_ADDR16_HI: | |
5324 | case R_PPC64_ADDR16_HIGHER: | |
5325 | case R_PPC64_ADDR16_HIGHERA: | |
5326 | case R_PPC64_ADDR16_HIGHEST: | |
5327 | case R_PPC64_ADDR16_HIGHESTA: | |
5328 | case R_PPC64_ADDR16_LO: | |
5329 | case R_PPC64_ADDR16_LO_DS: | |
5330 | case R_PPC64_ADDR24: | |
65f38f15 | 5331 | case R_PPC64_ADDR32: |
65f38f15 AM |
5332 | case R_PPC64_UADDR16: |
5333 | case R_PPC64_UADDR32: | |
5334 | case R_PPC64_UADDR64: | |
5bd4f169 | 5335 | case R_PPC64_TOC: |
81848ca0 AM |
5336 | if (h != NULL && !info->shared) |
5337 | /* We may need a copy reloc. */ | |
f5385ebf | 5338 | h->non_got_ref = 1; |
81848ca0 | 5339 | |
41bd81ab | 5340 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5341 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5342 | break; |
e86ce104 | 5343 | |
65f38f15 AM |
5344 | /* If we are creating a shared library, and this is a reloc |
5345 | against a global symbol, or a non PC relative reloc | |
5346 | against a local symbol, then we need to copy the reloc | |
5347 | into the shared library. However, if we are linking with | |
5348 | -Bsymbolic, we do not need to copy a reloc against a | |
5349 | global symbol which is defined in an object we are | |
5350 | including in the link (i.e., DEF_REGULAR is set). At | |
5351 | this point we have not seen all the input files, so it is | |
5352 | possible that DEF_REGULAR is not set now but will be set | |
5353 | later (it is never cleared). In case of a weak definition, | |
5354 | DEF_REGULAR may be cleared later by a strong definition in | |
5355 | a shared library. We account for that possibility below by | |
f4656909 | 5356 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5357 | table entry. A similar situation occurs when creating |
5358 | shared libraries and symbol visibility changes render the | |
5359 | symbol local. | |
5360 | ||
5361 | If on the other hand, we are creating an executable, we | |
5362 | may need to keep relocations for symbols satisfied by a | |
5363 | dynamic library if we manage to avoid copy relocs for the | |
5364 | symbol. */ | |
411e1bfb | 5365 | dodyn: |
65f38f15 | 5366 | if ((info->shared |
1d483afe | 5367 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5368 | || (h != NULL |
5369 | && (! info->symbolic | |
5370 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5371 | || !h->def_regular)))) |
f4656909 AM |
5372 | || (ELIMINATE_COPY_RELOCS |
5373 | && !info->shared | |
65f38f15 AM |
5374 | && h != NULL |
5375 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5376 | || !h->def_regular)) |
5377 | || (!info->shared | |
5378 | && ifunc != NULL)) | |
5bd4f169 | 5379 | { |
ec338859 AM |
5380 | struct ppc_dyn_relocs *p; |
5381 | struct ppc_dyn_relocs **head; | |
5382 | ||
65f38f15 AM |
5383 | /* We must copy these reloc types into the output file. |
5384 | Create a reloc section in dynobj and make room for | |
5385 | this reloc. */ | |
5bd4f169 AM |
5386 | if (sreloc == NULL) |
5387 | { | |
83bac4b0 NC |
5388 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5389 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5390 | |
5bd4f169 | 5391 | if (sreloc == NULL) |
83bac4b0 | 5392 | return FALSE; |
5bd4f169 AM |
5393 | } |
5394 | ||
65f38f15 AM |
5395 | /* If this is a global symbol, we count the number of |
5396 | relocations we need for this symbol. */ | |
5397 | if (h != NULL) | |
5398 | { | |
ec338859 | 5399 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5400 | } |
5401 | else | |
5402 | { | |
ec338859 AM |
5403 | /* Track dynamic relocs needed for local syms too. |
5404 | We really need local syms available to do this | |
5405 | easily. Oh well. */ | |
ec338859 | 5406 | asection *s; |
6edfbbad | 5407 | void *vpp; |
87d72d41 | 5408 | Elf_Internal_Sym *isym; |
6edfbbad | 5409 | |
87d72d41 AM |
5410 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5411 | abfd, r_symndx); | |
5412 | if (isym == NULL) | |
b34976b6 | 5413 | return FALSE; |
ec338859 | 5414 | |
87d72d41 AM |
5415 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5416 | if (s == NULL) | |
5417 | s = sec; | |
5418 | ||
6edfbbad DJ |
5419 | vpp = &elf_section_data (s)->local_dynrel; |
5420 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5421 | } |
ec338859 AM |
5422 | |
5423 | p = *head; | |
5424 | if (p == NULL || p->sec != sec) | |
5425 | { | |
4ce794b7 | 5426 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5427 | if (p == NULL) |
b34976b6 | 5428 | return FALSE; |
ec338859 AM |
5429 | p->next = *head; |
5430 | *head = p; | |
5431 | p->sec = sec; | |
5432 | p->count = 0; | |
5433 | p->pc_count = 0; | |
5434 | } | |
5435 | ||
5436 | p->count += 1; | |
1d483afe | 5437 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5438 | p->pc_count += 1; |
65f38f15 | 5439 | } |
5bd4f169 | 5440 | break; |
65f38f15 AM |
5441 | |
5442 | default: | |
96e0dda4 | 5443 | break; |
5bd4f169 AM |
5444 | } |
5445 | } | |
5446 | ||
b34976b6 | 5447 | return TRUE; |
5bd4f169 AM |
5448 | } |
5449 | ||
8387904d AM |
5450 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5451 | of the code entry point, and its section. */ | |
5452 | ||
5453 | static bfd_vma | |
5454 | opd_entry_value (asection *opd_sec, | |
5455 | bfd_vma offset, | |
5456 | asection **code_sec, | |
5457 | bfd_vma *code_off) | |
5458 | { | |
5459 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5460 | Elf_Internal_Rela *relocs; |
8387904d | 5461 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5462 | bfd_vma val; |
8387904d | 5463 | |
4b85d634 AM |
5464 | /* No relocs implies we are linking a --just-symbols object. */ |
5465 | if (opd_sec->reloc_count == 0) | |
5466 | { | |
4b85d634 AM |
5467 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) |
5468 | return (bfd_vma) -1; | |
3b36f7e6 | 5469 | |
4b85d634 AM |
5470 | if (code_sec != NULL) |
5471 | { | |
5472 | asection *sec, *likely = NULL; | |
5473 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5474 | if (sec->vma <= val | |
5475 | && (sec->flags & SEC_LOAD) != 0 | |
5476 | && (sec->flags & SEC_ALLOC) != 0) | |
5477 | likely = sec; | |
5478 | if (likely != NULL) | |
5479 | { | |
5480 | *code_sec = likely; | |
5481 | if (code_off != NULL) | |
5482 | *code_off = val - likely->vma; | |
5483 | } | |
5484 | } | |
5485 | return val; | |
5486 | } | |
5487 | ||
0c8d6e5c | 5488 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5489 | |
8860955f AM |
5490 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5491 | if (relocs == NULL) | |
5492 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5493 | |
8387904d | 5494 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5495 | lo = relocs; |
8387904d AM |
5496 | BFD_ASSERT (lo != NULL); |
5497 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5498 | val = (bfd_vma) -1; |
8387904d AM |
5499 | while (lo < hi) |
5500 | { | |
5501 | look = lo + (hi - lo) / 2; | |
5502 | if (look->r_offset < offset) | |
5503 | lo = look + 1; | |
5504 | else if (look->r_offset > offset) | |
5505 | hi = look; | |
5506 | else | |
5507 | { | |
0ffa91dd NC |
5508 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5509 | ||
8387904d AM |
5510 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5511 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5512 | { | |
5513 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5514 | asection *sec; |
5515 | ||
5516 | if (symndx < symtab_hdr->sh_info) | |
5517 | { | |
5518 | Elf_Internal_Sym *sym; | |
5519 | ||
5520 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5521 | if (sym == NULL) | |
5522 | { | |
5523 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5524 | symtab_hdr->sh_info, | |
5525 | 0, NULL, NULL, NULL); | |
5526 | if (sym == NULL) | |
645ea6a9 | 5527 | break; |
8387904d AM |
5528 | symtab_hdr->contents = (bfd_byte *) sym; |
5529 | } | |
5530 | ||
5531 | sym += symndx; | |
5532 | val = sym->st_value; | |
cb33740c | 5533 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5534 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5535 | } | |
5536 | else | |
5537 | { | |
5538 | struct elf_link_hash_entry **sym_hashes; | |
5539 | struct elf_link_hash_entry *rh; | |
5540 | ||
5541 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5542 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5543 | rh = elf_follow_link (rh); |
8387904d AM |
5544 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined |
5545 | || rh->root.type == bfd_link_hash_defweak); | |
5546 | val = rh->root.u.def.value; | |
5547 | sec = rh->root.u.def.section; | |
5548 | } | |
5549 | val += look->r_addend; | |
5550 | if (code_off != NULL) | |
5551 | *code_off = val; | |
5552 | if (code_sec != NULL) | |
5553 | *code_sec = sec; | |
5554 | if (sec != NULL && sec->output_section != NULL) | |
5555 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5556 | } |
5557 | break; | |
5558 | } | |
5559 | } | |
645ea6a9 | 5560 | |
645ea6a9 | 5561 | return val; |
8387904d AM |
5562 | } |
5563 | ||
b31867b6 AM |
5564 | /* If FDH is a function descriptor symbol, return the associated code |
5565 | entry symbol if it is defined. Return NULL otherwise. */ | |
5566 | ||
5567 | static struct ppc_link_hash_entry * | |
5568 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5569 | { | |
5570 | if (fdh->is_func_descriptor) | |
5571 | { | |
5572 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5573 | if (fh->elf.root.type == bfd_link_hash_defined | |
5574 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5575 | return fh; | |
5576 | } | |
5577 | return NULL; | |
5578 | } | |
5579 | ||
5580 | /* If FH is a function code entry symbol, return the associated | |
5581 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5582 | ||
5583 | static struct ppc_link_hash_entry * | |
5584 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5585 | { | |
5586 | if (fh->oh != NULL | |
5587 | && fh->oh->is_func_descriptor) | |
5588 | { | |
5589 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5590 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5591 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5592 | return fdh; | |
5593 | } | |
5594 | return NULL; | |
5595 | } | |
5596 | ||
74f0fb50 AM |
5597 | /* Mark all our entry sym sections, both opd and code section. */ |
5598 | ||
5599 | static void | |
5600 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5601 | { | |
5602 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5603 | struct bfd_sym_chain *sym; | |
5604 | ||
4dfe6ac6 NC |
5605 | if (htab == NULL) |
5606 | return; | |
5607 | ||
74f0fb50 AM |
5608 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5609 | { | |
b31867b6 | 5610 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5611 | asection *sec; |
5612 | ||
5613 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5614 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5615 | if (eh == NULL) |
5616 | continue; | |
5617 | if (eh->elf.root.type != bfd_link_hash_defined | |
5618 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5619 | continue; | |
5620 | ||
b31867b6 AM |
5621 | fh = defined_code_entry (eh); |
5622 | if (fh != NULL) | |
74f0fb50 | 5623 | { |
b31867b6 | 5624 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5625 | sec->flags |= SEC_KEEP; |
5626 | } | |
5627 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5628 | && opd_entry_value (eh->elf.root.u.def.section, | |
5629 | eh->elf.root.u.def.value, | |
5630 | &sec, NULL) != (bfd_vma) -1) | |
5631 | sec->flags |= SEC_KEEP; | |
5632 | ||
5633 | sec = eh->elf.root.u.def.section; | |
5634 | sec->flags |= SEC_KEEP; | |
5635 | } | |
5636 | } | |
5637 | ||
64d03ab5 AM |
5638 | /* Mark sections containing dynamically referenced symbols. When |
5639 | building shared libraries, we must assume that any visible symbol is | |
5640 | referenced. */ | |
5641 | ||
5642 | static bfd_boolean | |
5643 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5644 | { | |
5645 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5646 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5647 | struct ppc_link_hash_entry *fdh; |
64d03ab5 AM |
5648 | |
5649 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5650 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5651 | ||
5652 | /* Dynamic linking info is on the func descriptor sym. */ | |
b31867b6 AM |
5653 | fdh = defined_func_desc (eh); |
5654 | if (fdh != NULL) | |
5655 | eh = fdh; | |
64d03ab5 AM |
5656 | |
5657 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5658 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5659 | && (eh->elf.ref_dynamic | |
5660 | || (!info->executable | |
5661 | && eh->elf.def_regular | |
5662 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5663 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5664 | { | |
5665 | asection *code_sec; | |
b31867b6 | 5666 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5667 | |
5668 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5669 | ||
5670 | /* Function descriptor syms cause the associated | |
5671 | function code sym section to be marked. */ | |
b31867b6 AM |
5672 | fh = defined_code_entry (eh); |
5673 | if (fh != NULL) | |
5674 | { | |
5675 | code_sec = fh->elf.root.u.def.section; | |
5676 | code_sec->flags |= SEC_KEEP; | |
5677 | } | |
64d03ab5 AM |
5678 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5679 | && opd_entry_value (eh->elf.root.u.def.section, | |
5680 | eh->elf.root.u.def.value, | |
5681 | &code_sec, NULL) != (bfd_vma) -1) | |
5682 | code_sec->flags |= SEC_KEEP; | |
5683 | } | |
5684 | ||
5685 | return TRUE; | |
5686 | } | |
5687 | ||
5bd4f169 AM |
5688 | /* Return the section that should be marked against GC for a given |
5689 | relocation. */ | |
5690 | ||
5691 | static asection * | |
4ce794b7 | 5692 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5693 | struct bfd_link_info *info, |
4ce794b7 AM |
5694 | Elf_Internal_Rela *rel, |
5695 | struct elf_link_hash_entry *h, | |
5696 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5697 | { |
ccfa59ea AM |
5698 | asection *rsec; |
5699 | ||
ccfa59ea AM |
5700 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5701 | function sections, as all functions are referenced in .opd. */ | |
5702 | rsec = NULL; | |
5703 | if (get_opd_info (sec) != NULL) | |
5704 | return rsec; | |
1e2f5b6e | 5705 | |
5bd4f169 AM |
5706 | if (h != NULL) |
5707 | { | |
04c9666a | 5708 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5709 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5710 | |
4ce794b7 | 5711 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5712 | switch (r_type) |
5bd4f169 AM |
5713 | { |
5714 | case R_PPC64_GNU_VTINHERIT: | |
5715 | case R_PPC64_GNU_VTENTRY: | |
5716 | break; | |
5717 | ||
5718 | default: | |
5719 | switch (h->root.type) | |
5720 | { | |
5721 | case bfd_link_hash_defined: | |
5722 | case bfd_link_hash_defweak: | |
ccfa59ea | 5723 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5724 | fdh = defined_func_desc (eh); |
5725 | if (fdh != NULL) | |
5726 | eh = fdh; | |
1e2f5b6e AM |
5727 | |
5728 | /* Function descriptor syms cause the associated | |
5729 | function code sym section to be marked. */ | |
b31867b6 AM |
5730 | fh = defined_code_entry (eh); |
5731 | if (fh != NULL) | |
ccfa59ea AM |
5732 | { |
5733 | /* They also mark their opd section. */ | |
74f0fb50 | 5734 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5735 | |
b31867b6 | 5736 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5737 | } |
8387904d AM |
5738 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5739 | && opd_entry_value (eh->elf.root.u.def.section, | |
5740 | eh->elf.root.u.def.value, | |
5741 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5742 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5743 | else |
1e2f5b6e AM |
5744 | rsec = h->root.u.def.section; |
5745 | break; | |
5bd4f169 AM |
5746 | |
5747 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5748 | rsec = h->root.u.c.p->section; |
5749 | break; | |
5bd4f169 AM |
5750 | |
5751 | default: | |
fb34365b | 5752 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5753 | } |
5754 | } | |
5755 | } | |
5756 | else | |
5757 | { | |
74f0fb50 | 5758 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5759 | |
5760 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5761 | opd = get_opd_info (rsec); |
5762 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5763 | { |
74f0fb50 | 5764 | rsec->gc_mark = 1; |
ccfa59ea | 5765 | |
74f0fb50 | 5766 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5767 | } |
5bd4f169 AM |
5768 | } |
5769 | ||
1e2f5b6e | 5770 | return rsec; |
5bd4f169 AM |
5771 | } |
5772 | ||
65f38f15 AM |
5773 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5774 | section being removed. */ | |
5bd4f169 | 5775 | |
b34976b6 | 5776 | static bfd_boolean |
4ce794b7 AM |
5777 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5778 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5779 | { |
411e1bfb | 5780 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5781 | Elf_Internal_Shdr *symtab_hdr; |
5782 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5783 | struct got_entry **local_got_ents; |
5bd4f169 | 5784 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5785 | |
7dda2462 TG |
5786 | if (info->relocatable) |
5787 | return TRUE; | |
5788 | ||
680a3378 AM |
5789 | if ((sec->flags & SEC_ALLOC) == 0) |
5790 | return TRUE; | |
5791 | ||
ec338859 AM |
5792 | elf_section_data (sec)->local_dynrel = NULL; |
5793 | ||
411e1bfb | 5794 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5795 | if (htab == NULL) |
5796 | return FALSE; | |
5797 | ||
0ffa91dd | 5798 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5799 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5800 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5801 | |
5802 | relend = relocs + sec->reloc_count; | |
5803 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5804 | { |
5805 | unsigned long r_symndx; | |
04c9666a | 5806 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5807 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5808 | char tls_type = 0; |
5bd4f169 | 5809 | |
a33d1f77 | 5810 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5811 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5812 | if (r_symndx >= symtab_hdr->sh_info) |
5813 | { | |
5814 | struct ppc_link_hash_entry *eh; | |
5815 | struct ppc_dyn_relocs **pp; | |
5816 | struct ppc_dyn_relocs *p; | |
5817 | ||
5818 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5819 | h = elf_follow_link (h); |
58ac9f71 AM |
5820 | eh = (struct ppc_link_hash_entry *) h; |
5821 | ||
5822 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5823 | if (p->sec == sec) | |
5824 | { | |
5825 | /* Everything must go for SEC. */ | |
5826 | *pp = p->next; | |
5827 | break; | |
5828 | } | |
5829 | } | |
5830 | ||
e054468f AM |
5831 | if (is_branch_reloc (r_type)) |
5832 | { | |
5833 | struct plt_entry **ifunc = NULL; | |
5834 | if (h != NULL) | |
5835 | { | |
5836 | if (h->type == STT_GNU_IFUNC) | |
5837 | ifunc = &h->plt.plist; | |
5838 | } | |
5839 | else if (local_got_ents != NULL) | |
5840 | { | |
5841 | struct plt_entry **local_plt = (struct plt_entry **) | |
5842 | (local_got_ents + symtab_hdr->sh_info); | |
5843 | char *local_got_tls_masks = (char *) | |
5844 | (local_plt + symtab_hdr->sh_info); | |
5845 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
5846 | ifunc = local_plt + r_symndx; | |
5847 | } | |
5848 | if (ifunc != NULL) | |
5849 | { | |
5850 | struct plt_entry *ent; | |
5851 | ||
5852 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
5853 | if (ent->addend == rel->r_addend) | |
5854 | break; | |
5855 | if (ent == NULL) | |
5856 | abort (); | |
5857 | if (ent->plt.refcount > 0) | |
5858 | ent->plt.refcount -= 1; | |
5859 | continue; | |
5860 | } | |
5861 | } | |
5862 | ||
a33d1f77 AM |
5863 | switch (r_type) |
5864 | { | |
411e1bfb AM |
5865 | case R_PPC64_GOT_TLSLD16: |
5866 | case R_PPC64_GOT_TLSLD16_LO: | |
5867 | case R_PPC64_GOT_TLSLD16_HI: | |
5868 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5869 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5870 | goto dogot; |
5871 | ||
5872 | case R_PPC64_GOT_TLSGD16: | |
5873 | case R_PPC64_GOT_TLSGD16_LO: | |
5874 | case R_PPC64_GOT_TLSGD16_HI: | |
5875 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5876 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5877 | goto dogot; |
5878 | ||
5879 | case R_PPC64_GOT_TPREL16_DS: | |
5880 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5881 | case R_PPC64_GOT_TPREL16_HI: | |
5882 | case R_PPC64_GOT_TPREL16_HA: | |
5883 | tls_type = TLS_TLS | TLS_TPREL; | |
5884 | goto dogot; | |
5885 | ||
5886 | case R_PPC64_GOT_DTPREL16_DS: | |
5887 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5888 | case R_PPC64_GOT_DTPREL16_HI: | |
5889 | case R_PPC64_GOT_DTPREL16_HA: | |
5890 | tls_type = TLS_TLS | TLS_DTPREL; | |
5891 | goto dogot; | |
5892 | ||
a33d1f77 AM |
5893 | case R_PPC64_GOT16: |
5894 | case R_PPC64_GOT16_DS: | |
5895 | case R_PPC64_GOT16_HA: | |
5896 | case R_PPC64_GOT16_HI: | |
5897 | case R_PPC64_GOT16_LO: | |
5898 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5899 | dogot: |
5900 | { | |
5901 | struct got_entry *ent; | |
5902 | ||
58ac9f71 AM |
5903 | if (h != NULL) |
5904 | ent = h->got.glist; | |
411e1bfb AM |
5905 | else |
5906 | ent = local_got_ents[r_symndx]; | |
5907 | ||
5908 | for (; ent != NULL; ent = ent->next) | |
5909 | if (ent->addend == rel->r_addend | |
e717da7e | 5910 | && ent->owner == abfd |
411e1bfb AM |
5911 | && ent->tls_type == tls_type) |
5912 | break; | |
5913 | if (ent == NULL) | |
5914 | abort (); | |
5915 | if (ent->got.refcount > 0) | |
5916 | ent->got.refcount -= 1; | |
5917 | } | |
a33d1f77 | 5918 | break; |
65f38f15 | 5919 | |
a33d1f77 AM |
5920 | case R_PPC64_PLT16_HA: |
5921 | case R_PPC64_PLT16_HI: | |
5922 | case R_PPC64_PLT16_LO: | |
5923 | case R_PPC64_PLT32: | |
5924 | case R_PPC64_PLT64: | |
721956f4 AM |
5925 | case R_PPC64_REL14: |
5926 | case R_PPC64_REL14_BRNTAKEN: | |
5927 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5928 | case R_PPC64_REL24: |
58ac9f71 | 5929 | if (h != NULL) |
5d1634d7 | 5930 | { |
411e1bfb AM |
5931 | struct plt_entry *ent; |
5932 | ||
411e1bfb AM |
5933 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5934 | if (ent->addend == rel->r_addend) | |
5935 | break; | |
7c6c1722 | 5936 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 5937 | ent->plt.refcount -= 1; |
5d1634d7 | 5938 | } |
e86ce104 | 5939 | break; |
5d1634d7 | 5940 | |
a33d1f77 AM |
5941 | default: |
5942 | break; | |
5943 | } | |
5944 | } | |
b34976b6 | 5945 | return TRUE; |
5bd4f169 AM |
5946 | } |
5947 | ||
deb0e272 AM |
5948 | /* The maximum size of .sfpr. */ |
5949 | #define SFPR_MAX (218*4) | |
5950 | ||
5951 | struct sfpr_def_parms | |
5952 | { | |
699733f6 AM |
5953 | const char name[12]; |
5954 | unsigned char lo, hi; | |
deb0e272 AM |
5955 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5956 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5957 | }; | |
5958 | ||
5959 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5960 | ||
4dfe6ac6 | 5961 | static bfd_boolean |
deb0e272 AM |
5962 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
5963 | { | |
5964 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5965 | unsigned int i; | |
5966 | size_t len = strlen (parm->name); | |
5967 | bfd_boolean writing = FALSE; | |
699733f6 | 5968 | char sym[16]; |
deb0e272 | 5969 | |
4dfe6ac6 NC |
5970 | if (htab == NULL) |
5971 | return FALSE; | |
5972 | ||
deb0e272 AM |
5973 | memcpy (sym, parm->name, len); |
5974 | sym[len + 2] = 0; | |
5975 | ||
5976 | for (i = parm->lo; i <= parm->hi; i++) | |
5977 | { | |
5978 | struct elf_link_hash_entry *h; | |
5979 | ||
5980 | sym[len + 0] = i / 10 + '0'; | |
5981 | sym[len + 1] = i % 10 + '0'; | |
5982 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5983 | if (h != NULL | |
f5385ebf | 5984 | && !h->def_regular) |
deb0e272 AM |
5985 | { |
5986 | h->root.type = bfd_link_hash_defined; | |
5987 | h->root.u.def.section = htab->sfpr; | |
5988 | h->root.u.def.value = htab->sfpr->size; | |
5989 | h->type = STT_FUNC; | |
f5385ebf | 5990 | h->def_regular = 1; |
deb0e272 AM |
5991 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5992 | writing = TRUE; | |
5993 | if (htab->sfpr->contents == NULL) | |
5994 | { | |
5995 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5996 | if (htab->sfpr->contents == NULL) | |
5997 | return FALSE; | |
5998 | } | |
5999 | } | |
6000 | if (writing) | |
6001 | { | |
6002 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6003 | if (i != parm->hi) | |
6004 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6005 | else | |
6006 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6007 | htab->sfpr->size = p - htab->sfpr->contents; | |
6008 | } | |
6009 | } | |
6010 | ||
6011 | return TRUE; | |
6012 | } | |
6013 | ||
6014 | static bfd_byte * | |
6015 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6016 | { | |
6017 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6018 | return p + 4; | |
6019 | } | |
6020 | ||
6021 | static bfd_byte * | |
6022 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6023 | { | |
6024 | p = savegpr0 (abfd, p, r); | |
6025 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6026 | p = p + 4; | |
6027 | bfd_put_32 (abfd, BLR, p); | |
6028 | return p + 4; | |
6029 | } | |
6030 | ||
6031 | static bfd_byte * | |
6032 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6033 | { | |
6034 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6035 | return p + 4; | |
6036 | } | |
6037 | ||
6038 | static bfd_byte * | |
6039 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6040 | { | |
6041 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6042 | p = p + 4; | |
6043 | p = restgpr0 (abfd, p, r); | |
6044 | bfd_put_32 (abfd, MTLR_R0, p); | |
6045 | p = p + 4; | |
6046 | if (r == 29) | |
6047 | { | |
6048 | p = restgpr0 (abfd, p, 30); | |
6049 | p = restgpr0 (abfd, p, 31); | |
6050 | } | |
6051 | bfd_put_32 (abfd, BLR, p); | |
6052 | return p + 4; | |
6053 | } | |
6054 | ||
6055 | static bfd_byte * | |
6056 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6057 | { | |
6058 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6059 | return p + 4; | |
6060 | } | |
6061 | ||
6062 | static bfd_byte * | |
6063 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6064 | { | |
6065 | p = savegpr1 (abfd, p, r); | |
6066 | bfd_put_32 (abfd, BLR, p); | |
6067 | return p + 4; | |
6068 | } | |
6069 | ||
6070 | static bfd_byte * | |
6071 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6072 | { | |
6073 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6074 | return p + 4; | |
6075 | } | |
6076 | ||
6077 | static bfd_byte * | |
6078 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6079 | { | |
6080 | p = restgpr1 (abfd, p, r); | |
6081 | bfd_put_32 (abfd, BLR, p); | |
6082 | return p + 4; | |
6083 | } | |
6084 | ||
6085 | static bfd_byte * | |
6086 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6087 | { | |
6088 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6089 | return p + 4; | |
6090 | } | |
6091 | ||
6092 | static bfd_byte * | |
6093 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6094 | { | |
6095 | p = savefpr (abfd, p, r); | |
6096 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6097 | p = p + 4; | |
6098 | bfd_put_32 (abfd, BLR, p); | |
6099 | return p + 4; | |
6100 | } | |
6101 | ||
6102 | static bfd_byte * | |
6103 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6104 | { | |
6105 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6106 | return p + 4; | |
6107 | } | |
6108 | ||
6109 | static bfd_byte * | |
6110 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6111 | { | |
6112 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6113 | p = p + 4; | |
6114 | p = restfpr (abfd, p, r); | |
6115 | bfd_put_32 (abfd, MTLR_R0, p); | |
6116 | p = p + 4; | |
6117 | if (r == 29) | |
6118 | { | |
6119 | p = restfpr (abfd, p, 30); | |
6120 | p = restfpr (abfd, p, 31); | |
6121 | } | |
6122 | bfd_put_32 (abfd, BLR, p); | |
6123 | return p + 4; | |
6124 | } | |
6125 | ||
6126 | static bfd_byte * | |
6127 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6128 | { | |
6129 | p = savefpr (abfd, p, r); | |
6130 | bfd_put_32 (abfd, BLR, p); | |
6131 | return p + 4; | |
6132 | } | |
6133 | ||
6134 | static bfd_byte * | |
6135 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6136 | { | |
6137 | p = restfpr (abfd, p, r); | |
6138 | bfd_put_32 (abfd, BLR, p); | |
6139 | return p + 4; | |
6140 | } | |
6141 | ||
6142 | static bfd_byte * | |
6143 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6144 | { | |
6145 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6146 | p = p + 4; | |
6147 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6148 | return p + 4; | |
6149 | } | |
6150 | ||
6151 | static bfd_byte * | |
6152 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6153 | { | |
6154 | p = savevr (abfd, p, r); | |
6155 | bfd_put_32 (abfd, BLR, p); | |
6156 | return p + 4; | |
6157 | } | |
6158 | ||
6159 | static bfd_byte * | |
6160 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6161 | { | |
6162 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6163 | p = p + 4; | |
6164 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6165 | return p + 4; | |
6166 | } | |
6167 | ||
6168 | static bfd_byte * | |
6169 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6170 | { | |
6171 | p = restvr (abfd, p, r); | |
6172 | bfd_put_32 (abfd, BLR, p); | |
6173 | return p + 4; | |
6174 | } | |
6175 | ||
e86ce104 AM |
6176 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6177 | information on function code symbol entries to their corresponding | |
6178 | function descriptor symbol entries. */ | |
deb0e272 | 6179 | |
b34976b6 | 6180 | static bfd_boolean |
4ce794b7 | 6181 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6182 | { |
e86ce104 | 6183 | struct bfd_link_info *info; |
65f38f15 | 6184 | struct ppc_link_hash_table *htab; |
411e1bfb | 6185 | struct plt_entry *ent; |
50bc7936 AM |
6186 | struct ppc_link_hash_entry *fh; |
6187 | struct ppc_link_hash_entry *fdh; | |
6188 | bfd_boolean force_local; | |
5bd4f169 | 6189 | |
50bc7936 AM |
6190 | fh = (struct ppc_link_hash_entry *) h; |
6191 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6192 | return TRUE; |
e86ce104 | 6193 | |
50bc7936 AM |
6194 | if (fh->elf.root.type == bfd_link_hash_warning) |
6195 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 6196 | |
4ce794b7 | 6197 | info = inf; |
65f38f15 | 6198 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6199 | if (htab == NULL) |
6200 | return FALSE; | |
5bd4f169 | 6201 | |
c09bdfe5 AM |
6202 | /* Resolve undefined references to dot-symbols as the value |
6203 | in the function descriptor, if we have one in a regular object. | |
6204 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6205 | in dynamic objects are handled elsewhere. */ | |
6206 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6207 | && fh->was_undefined | |
b31867b6 AM |
6208 | && (fdh = defined_func_desc (fh)) != NULL |
6209 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6210 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6211 | fdh->elf.root.u.def.value, | |
c09bdfe5 AM |
6212 | &fh->elf.root.u.def.section, |
6213 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
6214 | { | |
b31867b6 | 6215 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6216 | fh->elf.forced_local = 1; |
b31867b6 AM |
6217 | fh->elf.def_regular = fdh->elf.def_regular; |
6218 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6219 | } |
6220 | ||
e86ce104 AM |
6221 | /* If this is a function code symbol, transfer dynamic linking |
6222 | information to the function descriptor symbol. */ | |
50bc7936 | 6223 | if (!fh->is_func) |
b34976b6 | 6224 | return TRUE; |
e86ce104 | 6225 | |
50bc7936 | 6226 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6227 | if (ent->plt.refcount > 0) |
6228 | break; | |
50bc7936 AM |
6229 | if (ent == NULL |
6230 | || fh->elf.root.root.string[0] != '.' | |
6231 | || fh->elf.root.root.string[1] == '\0') | |
6232 | return TRUE; | |
5bd4f169 | 6233 | |
50bc7936 AM |
6234 | /* Find the corresponding function descriptor symbol. Create it |
6235 | as undefined if necessary. */ | |
5bd4f169 | 6236 | |
b31867b6 | 6237 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6238 | if (fdh == NULL |
df131623 | 6239 | && !info->executable |
50bc7936 AM |
6240 | && (fh->elf.root.type == bfd_link_hash_undefined |
6241 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6242 | { | |
908b32fc | 6243 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6244 | if (fdh == NULL) |
6245 | return FALSE; | |
50bc7936 | 6246 | } |
648cca2c | 6247 | |
908b32fc | 6248 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6249 | code symbol is strong undefined, make the fake sym the same. |
6250 | If the function code symbol is defined, then force the fake | |
6251 | descriptor local; We can't support overriding of symbols in a | |
6252 | shared library on a fake descriptor. */ | |
908b32fc AM |
6253 | |
6254 | if (fdh != NULL | |
6255 | && fdh->fake | |
433817dd | 6256 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6257 | { |
433817dd AM |
6258 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6259 | { | |
6260 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6261 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6262 | } | |
6263 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6264 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6265 | { | |
6266 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6267 | } | |
908b32fc AM |
6268 | } |
6269 | ||
50bc7936 | 6270 | if (fdh != NULL |
f5385ebf | 6271 | && !fdh->elf.forced_local |
df131623 | 6272 | && (!info->executable |
f5385ebf AM |
6273 | || fdh->elf.def_dynamic |
6274 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6275 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6276 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6277 | { | |
6278 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6279 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6280 | return FALSE; |
f5385ebf AM |
6281 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6282 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6283 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6284 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6285 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6286 | { |
40d16e0b | 6287 | move_plt_plist (fh, fdh); |
f5385ebf | 6288 | fdh->elf.needs_plt = 1; |
e86ce104 | 6289 | } |
50bc7936 | 6290 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6291 | fdh->oh = fh; |
6292 | fh->oh = fdh; | |
e86ce104 AM |
6293 | } |
6294 | ||
50bc7936 AM |
6295 | /* Now that the info is on the function descriptor, clear the |
6296 | function code sym info. Any function code syms for which we | |
6297 | don't have a definition in a regular file, we force local. | |
6298 | This prevents a shared library from exporting syms that have | |
6299 | been imported from another library. Function code syms that | |
6300 | are really in the library we must leave global to prevent the | |
6301 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6302 | force_local = (!fh->elf.def_regular |
6303 | || fdh == NULL | |
6304 | || !fdh->elf.def_regular | |
6305 | || fdh->elf.forced_local); | |
50bc7936 AM |
6306 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6307 | ||
b34976b6 | 6308 | return TRUE; |
e86ce104 | 6309 | } |
40b8271b | 6310 | |
e86ce104 | 6311 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6312 | this hook to a) provide some gcc support functions, and b) transfer |
6313 | dynamic linking information gathered so far on function code symbol | |
6314 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6315 | |
b34976b6 | 6316 | static bfd_boolean |
4ce794b7 AM |
6317 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6318 | struct bfd_link_info *info) | |
e86ce104 AM |
6319 | { |
6320 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6321 | unsigned int i; |
deb0e272 AM |
6322 | const struct sfpr_def_parms funcs[] = |
6323 | { | |
6324 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6325 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6326 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6327 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6328 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6329 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6330 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6331 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6332 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6333 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6334 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6335 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6336 | }; | |
e86ce104 AM |
6337 | |
6338 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6339 | if (htab == NULL) |
6340 | return FALSE; | |
6341 | ||
82bd7b59 AM |
6342 | if (htab->sfpr == NULL) |
6343 | /* We don't have any relocs. */ | |
b34976b6 | 6344 | return TRUE; |
82bd7b59 | 6345 | |
deb0e272 AM |
6346 | /* Provide any missing _save* and _rest* functions. */ |
6347 | htab->sfpr->size = 0; | |
6348 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6349 | if (!sfpr_define (info, &funcs[i])) | |
6350 | return FALSE; | |
82bd7b59 | 6351 | |
4ce794b7 | 6352 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6353 | |
eea6121a | 6354 | if (htab->sfpr->size == 0) |
8423293d | 6355 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6356 | |
b34976b6 | 6357 | return TRUE; |
e86ce104 AM |
6358 | } |
6359 | ||
6360 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6361 | regular object. The current definition is in some section of the | |
6362 | dynamic object, but we're not including those sections. We have to | |
6363 | change the definition to something the rest of the link can | |
6364 | understand. */ | |
6365 | ||
b34976b6 | 6366 | static bfd_boolean |
4ce794b7 AM |
6367 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6368 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6369 | { |
6370 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6371 | asection *s; |
e86ce104 AM |
6372 | |
6373 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6374 | if (htab == NULL) |
6375 | return FALSE; | |
e86ce104 AM |
6376 | |
6377 | /* Deal with function syms. */ | |
6378 | if (h->type == STT_FUNC | |
e054468f | 6379 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6380 | || h->needs_plt) |
e86ce104 AM |
6381 | { |
6382 | /* Clear procedure linkage table information for any symbol that | |
6383 | won't need a .plt entry. */ | |
411e1bfb AM |
6384 | struct plt_entry *ent; |
6385 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6386 | if (ent->plt.refcount > 0) | |
6387 | break; | |
8387904d | 6388 | if (ent == NULL |
e054468f AM |
6389 | || (h->type != STT_GNU_IFUNC |
6390 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6391 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6392 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6393 | { |
411e1bfb | 6394 | h->plt.plist = NULL; |
f5385ebf | 6395 | h->needs_plt = 0; |
40b8271b | 6396 | } |
5bd4f169 | 6397 | } |
bbd7ec4a | 6398 | else |
411e1bfb | 6399 | h->plt.plist = NULL; |
5bd4f169 AM |
6400 | |
6401 | /* If this is a weak symbol, and there is a real definition, the | |
6402 | processor independent code will have arranged for us to see the | |
6403 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6404 | if (h->u.weakdef != NULL) |
5bd4f169 | 6405 | { |
f6e332e6 AM |
6406 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6407 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6408 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6409 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6410 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6411 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6412 | return TRUE; |
5bd4f169 AM |
6413 | } |
6414 | ||
5bd4f169 AM |
6415 | /* If we are creating a shared library, we must presume that the |
6416 | only references to the symbol are via the global offset table. | |
6417 | For such cases we need not do anything here; the relocations will | |
6418 | be handled correctly by relocate_section. */ | |
6419 | if (info->shared) | |
b34976b6 | 6420 | return TRUE; |
5bd4f169 | 6421 | |
65f38f15 AM |
6422 | /* If there are no references to this symbol that do not use the |
6423 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6424 | if (!h->non_got_ref) |
b34976b6 | 6425 | return TRUE; |
65f38f15 | 6426 | |
b186458a JJ |
6427 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6428 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6429 | return TRUE; | |
6430 | ||
f4656909 | 6431 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6432 | { |
f4656909 AM |
6433 | struct ppc_link_hash_entry * eh; |
6434 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6435 | |
f4656909 AM |
6436 | eh = (struct ppc_link_hash_entry *) h; |
6437 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6438 | { | |
6439 | s = p->sec->output_section; | |
6440 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6441 | break; | |
6442 | } | |
6443 | ||
6444 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6445 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6446 | if (p == NULL) | |
6447 | { | |
f5385ebf | 6448 | h->non_got_ref = 0; |
f4656909 AM |
6449 | return TRUE; |
6450 | } | |
65f38f15 AM |
6451 | } |
6452 | ||
5d35169e | 6453 | if (h->plt.plist != NULL) |
97b639ba AM |
6454 | { |
6455 | /* We should never get here, but unfortunately there are versions | |
6456 | of gcc out there that improperly (for this ABI) put initialized | |
6457 | function pointers, vtable refs and suchlike in read-only | |
6458 | sections. Allow them to proceed, but warn that this might | |
6459 | break at runtime. */ | |
6460 | (*_bfd_error_handler) | |
6461 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6462 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6463 | h->root.root.string); | |
6464 | } | |
5d35169e AM |
6465 | |
6466 | /* This is a reference to a symbol defined by a dynamic object which | |
6467 | is not a function. */ | |
6468 | ||
909272ee AM |
6469 | if (h->size == 0) |
6470 | { | |
6471 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6472 | h->root.root.string); | |
6473 | return TRUE; | |
6474 | } | |
6475 | ||
5bd4f169 AM |
6476 | /* We must allocate the symbol in our .dynbss section, which will |
6477 | become part of the .bss section of the executable. There will be | |
6478 | an entry for this symbol in the .dynsym section. The dynamic | |
6479 | object will contain position independent code, so all references | |
6480 | from the dynamic object to this symbol will go through the global | |
6481 | offset table. The dynamic linker will use the .dynsym entry to | |
6482 | determine the address it must put in the global offset table, so | |
6483 | both the dynamic object and the regular object will refer to the | |
6484 | same memory location for the variable. */ | |
5bd4f169 | 6485 | |
04c9666a AM |
6486 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6487 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6488 | runtime process image. We need to remember the offset into the |
6489 | .rela.bss section we are going to use. */ | |
6490 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6491 | { | |
eea6121a | 6492 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6493 | h->needs_copy = 1; |
5bd4f169 AM |
6494 | } |
6495 | ||
4ce794b7 | 6496 | s = htab->dynbss; |
5bd4f169 | 6497 | |
027297b7 | 6498 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6499 | } |
6500 | ||
e86ce104 AM |
6501 | /* If given a function descriptor symbol, hide both the function code |
6502 | sym and the descriptor. */ | |
6503 | static void | |
4ce794b7 AM |
6504 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6505 | struct elf_link_hash_entry *h, | |
6506 | bfd_boolean force_local) | |
e86ce104 | 6507 | { |
34814b9f | 6508 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6509 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6510 | ||
34814b9f AM |
6511 | eh = (struct ppc_link_hash_entry *) h; |
6512 | if (eh->is_func_descriptor) | |
e86ce104 | 6513 | { |
34814b9f | 6514 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6515 | |
721956f4 | 6516 | if (fh == NULL) |
d1329ca3 AM |
6517 | { |
6518 | const char *p, *q; | |
6519 | struct ppc_link_hash_table *htab; | |
6520 | char save; | |
6521 | ||
6522 | /* We aren't supposed to use alloca in BFD because on | |
6523 | systems which do not have alloca the version in libiberty | |
6524 | calls xmalloc, which might cause the program to crash | |
6525 | when it runs out of memory. This function doesn't have a | |
6526 | return status, so there's no way to gracefully return an | |
6527 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6528 | accessed; It's either a string in an ELF string table, |
6529 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6530 | |
34814b9f | 6531 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6532 | save = *p; |
6533 | *(char *) p = '.'; | |
6534 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6535 | if (htab == NULL) |
6536 | return; | |
6537 | ||
34814b9f AM |
6538 | fh = (struct ppc_link_hash_entry *) |
6539 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6540 | *(char *) p = save; |
6541 | ||
6542 | /* Unfortunately, if it so happens that the string we were | |
6543 | looking for was allocated immediately before this string, | |
6544 | then we overwrote the string terminator. That's the only | |
6545 | reason the lookup should fail. */ | |
6546 | if (fh == NULL) | |
6547 | { | |
34814b9f AM |
6548 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6549 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6550 | --q, --p; |
34814b9f AM |
6551 | if (q < eh->elf.root.root.string && *p == '.') |
6552 | fh = (struct ppc_link_hash_entry *) | |
6553 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6554 | } |
6555 | if (fh != NULL) | |
6556 | { | |
34814b9f AM |
6557 | eh->oh = fh; |
6558 | fh->oh = eh; | |
d1329ca3 AM |
6559 | } |
6560 | } | |
e86ce104 | 6561 | if (fh != NULL) |
34814b9f | 6562 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6563 | } |
6564 | } | |
6565 | ||
411e1bfb | 6566 | static bfd_boolean |
8843416a AM |
6567 | get_sym_h (struct elf_link_hash_entry **hp, |
6568 | Elf_Internal_Sym **symp, | |
6569 | asection **symsecp, | |
6570 | char **tls_maskp, | |
6571 | Elf_Internal_Sym **locsymsp, | |
6572 | unsigned long r_symndx, | |
6573 | bfd *ibfd) | |
411e1bfb | 6574 | { |
0ffa91dd | 6575 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6576 | |
6577 | if (r_symndx >= symtab_hdr->sh_info) | |
6578 | { | |
6579 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6580 | struct elf_link_hash_entry *h; | |
6581 | ||
6582 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6583 | h = elf_follow_link (h); |
411e1bfb AM |
6584 | |
6585 | if (hp != NULL) | |
6586 | *hp = h; | |
6587 | ||
6588 | if (symp != NULL) | |
6589 | *symp = NULL; | |
6590 | ||
6591 | if (symsecp != NULL) | |
6592 | { | |
6593 | asection *symsec = NULL; | |
6594 | if (h->root.type == bfd_link_hash_defined | |
6595 | || h->root.type == bfd_link_hash_defweak) | |
6596 | symsec = h->root.u.def.section; | |
6597 | *symsecp = symsec; | |
6598 | } | |
6599 | ||
e7b938ca | 6600 | if (tls_maskp != NULL) |
411e1bfb AM |
6601 | { |
6602 | struct ppc_link_hash_entry *eh; | |
6603 | ||
6604 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6605 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6606 | } |
6607 | } | |
6608 | else | |
6609 | { | |
6610 | Elf_Internal_Sym *sym; | |
6611 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6612 | ||
6613 | if (locsyms == NULL) | |
6614 | { | |
6615 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6616 | if (locsyms == NULL) | |
6617 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6618 | symtab_hdr->sh_info, | |
6619 | 0, NULL, NULL, NULL); | |
6620 | if (locsyms == NULL) | |
6621 | return FALSE; | |
6622 | *locsymsp = locsyms; | |
6623 | } | |
6624 | sym = locsyms + r_symndx; | |
6625 | ||
6626 | if (hp != NULL) | |
6627 | *hp = NULL; | |
6628 | ||
6629 | if (symp != NULL) | |
6630 | *symp = sym; | |
6631 | ||
6632 | if (symsecp != NULL) | |
cb33740c | 6633 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6634 | |
e7b938ca | 6635 | if (tls_maskp != NULL) |
411e1bfb AM |
6636 | { |
6637 | struct got_entry **lgot_ents; | |
e7b938ca | 6638 | char *tls_mask; |
411e1bfb | 6639 | |
e7b938ca | 6640 | tls_mask = NULL; |
411e1bfb AM |
6641 | lgot_ents = elf_local_got_ents (ibfd); |
6642 | if (lgot_ents != NULL) | |
6643 | { | |
e054468f AM |
6644 | struct plt_entry **local_plt = (struct plt_entry **) |
6645 | (lgot_ents + symtab_hdr->sh_info); | |
6646 | char *lgot_masks = (char *) | |
6647 | (local_plt + symtab_hdr->sh_info); | |
e7b938ca | 6648 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6649 | } |
e7b938ca | 6650 | *tls_maskp = tls_mask; |
411e1bfb AM |
6651 | } |
6652 | } | |
6653 | return TRUE; | |
6654 | } | |
6655 | ||
e7b938ca | 6656 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6657 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6658 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6659 | |
6660 | static int | |
3a71aa26 AM |
6661 | get_tls_mask (char **tls_maskp, |
6662 | unsigned long *toc_symndx, | |
6663 | bfd_vma *toc_addend, | |
0d4792f7 | 6664 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6665 | const Elf_Internal_Rela *rel, |
6666 | bfd *ibfd) | |
411e1bfb AM |
6667 | { |
6668 | unsigned long r_symndx; | |
0d4792f7 | 6669 | int next_r; |
411e1bfb AM |
6670 | struct elf_link_hash_entry *h; |
6671 | Elf_Internal_Sym *sym; | |
6672 | asection *sec; | |
6673 | bfd_vma off; | |
6674 | ||
6675 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6676 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6677 | return 0; |
411e1bfb | 6678 | |
e7b938ca | 6679 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6680 | || sec == NULL |
7c8fe5c4 | 6681 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6682 | return 1; |
411e1bfb AM |
6683 | |
6684 | /* Look inside a TOC section too. */ | |
6685 | if (h != NULL) | |
6686 | { | |
6687 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6688 | off = h->root.u.def.value; | |
6689 | } | |
6690 | else | |
6691 | off = sym->st_value; | |
6692 | off += rel->r_addend; | |
6693 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6694 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6695 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6696 | if (toc_symndx != NULL) |
6697 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6698 | if (toc_addend != NULL) |
6699 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6700 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6701 | return 0; | |
0d4792f7 AM |
6702 | if ((h == NULL |
6703 | || ((h->root.type == bfd_link_hash_defined | |
6704 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6705 | && !h->def_dynamic)) |
0d4792f7 AM |
6706 | && (next_r == -1 || next_r == -2)) |
6707 | return 1 - next_r; | |
951fd09b | 6708 | return 1; |
411e1bfb AM |
6709 | } |
6710 | ||
754021d0 | 6711 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6712 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6713 | |
6714 | static bfd_boolean | |
6715 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6716 | { | |
6717 | struct ppc_link_hash_entry *eh; | |
6718 | asection *sym_sec; | |
74f0fb50 | 6719 | struct _opd_sec_data *opd; |
754021d0 AM |
6720 | |
6721 | if (h->root.type == bfd_link_hash_indirect) | |
6722 | return TRUE; | |
6723 | ||
6724 | if (h->root.type == bfd_link_hash_warning) | |
6725 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6726 | ||
6727 | if (h->root.type != bfd_link_hash_defined | |
6728 | && h->root.type != bfd_link_hash_defweak) | |
6729 | return TRUE; | |
6730 | ||
6731 | eh = (struct ppc_link_hash_entry *) h; | |
6732 | if (eh->adjust_done) | |
6733 | return TRUE; | |
6734 | ||
6735 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6736 | opd = get_opd_info (sym_sec); |
6737 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6738 | { |
74f0fb50 | 6739 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6740 | if (adjust == -1) |
6741 | { | |
6742 | /* This entry has been deleted. */ | |
b3fac117 | 6743 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6744 | if (dsec == NULL) |
6745 | { | |
6746 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6747 | if (elf_discarded_section (dsec)) | |
6748 | { | |
b3fac117 | 6749 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6750 | break; |
6751 | } | |
6752 | } | |
4025353c | 6753 | eh->elf.root.u.def.value = 0; |
81688140 | 6754 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6755 | } |
6756 | else | |
6757 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6758 | eh->adjust_done = 1; |
6759 | } | |
6760 | return TRUE; | |
6761 | } | |
6762 | ||
8c1d1bb8 AM |
6763 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6764 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6765 | have already been determined. */ | |
6766 | ||
6767 | static bfd_boolean | |
6768 | dec_dynrel_count (bfd_vma r_info, | |
6769 | asection *sec, | |
6770 | struct bfd_link_info *info, | |
6771 | Elf_Internal_Sym **local_syms, | |
6772 | struct elf_link_hash_entry *h, | |
6773 | asection *sym_sec) | |
6774 | { | |
6775 | enum elf_ppc64_reloc_type r_type; | |
6776 | struct ppc_dyn_relocs *p; | |
6777 | struct ppc_dyn_relocs **pp; | |
6778 | ||
6779 | /* Can this reloc be dynamic? This switch, and later tests here | |
6780 | should be kept in sync with the code in check_relocs. */ | |
6781 | r_type = ELF64_R_TYPE (r_info); | |
6782 | switch (r_type) | |
6783 | { | |
6784 | default: | |
6785 | return TRUE; | |
6786 | ||
6787 | case R_PPC64_TPREL16: | |
6788 | case R_PPC64_TPREL16_LO: | |
6789 | case R_PPC64_TPREL16_HI: | |
6790 | case R_PPC64_TPREL16_HA: | |
6791 | case R_PPC64_TPREL16_DS: | |
6792 | case R_PPC64_TPREL16_LO_DS: | |
6793 | case R_PPC64_TPREL16_HIGHER: | |
6794 | case R_PPC64_TPREL16_HIGHERA: | |
6795 | case R_PPC64_TPREL16_HIGHEST: | |
6796 | case R_PPC64_TPREL16_HIGHESTA: | |
6797 | if (!info->shared) | |
6798 | return TRUE; | |
6799 | ||
6800 | case R_PPC64_TPREL64: | |
6801 | case R_PPC64_DTPMOD64: | |
6802 | case R_PPC64_DTPREL64: | |
6803 | case R_PPC64_ADDR64: | |
6804 | case R_PPC64_REL30: | |
6805 | case R_PPC64_REL32: | |
6806 | case R_PPC64_REL64: | |
6807 | case R_PPC64_ADDR14: | |
6808 | case R_PPC64_ADDR14_BRNTAKEN: | |
6809 | case R_PPC64_ADDR14_BRTAKEN: | |
6810 | case R_PPC64_ADDR16: | |
6811 | case R_PPC64_ADDR16_DS: | |
6812 | case R_PPC64_ADDR16_HA: | |
6813 | case R_PPC64_ADDR16_HI: | |
6814 | case R_PPC64_ADDR16_HIGHER: | |
6815 | case R_PPC64_ADDR16_HIGHERA: | |
6816 | case R_PPC64_ADDR16_HIGHEST: | |
6817 | case R_PPC64_ADDR16_HIGHESTA: | |
6818 | case R_PPC64_ADDR16_LO: | |
6819 | case R_PPC64_ADDR16_LO_DS: | |
6820 | case R_PPC64_ADDR24: | |
6821 | case R_PPC64_ADDR32: | |
6822 | case R_PPC64_UADDR16: | |
6823 | case R_PPC64_UADDR32: | |
6824 | case R_PPC64_UADDR64: | |
6825 | case R_PPC64_TOC: | |
6826 | break; | |
6827 | } | |
6828 | ||
6829 | if (local_syms != NULL) | |
6830 | { | |
6831 | unsigned long r_symndx; | |
6832 | Elf_Internal_Sym *sym; | |
6833 | bfd *ibfd = sec->owner; | |
6834 | ||
6835 | r_symndx = ELF64_R_SYM (r_info); | |
6836 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6837 | return FALSE; | |
6838 | } | |
6839 | ||
6840 | if ((info->shared | |
1d483afe | 6841 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6842 | || (h != NULL |
6843 | && (!info->symbolic | |
6844 | || h->root.type == bfd_link_hash_defweak | |
6845 | || !h->def_regular)))) | |
6846 | || (ELIMINATE_COPY_RELOCS | |
6847 | && !info->shared | |
6848 | && h != NULL | |
6849 | && (h->root.type == bfd_link_hash_defweak | |
6850 | || !h->def_regular))) | |
6851 | ; | |
6852 | else | |
6853 | return TRUE; | |
6854 | ||
6855 | if (h != NULL) | |
6856 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6857 | else |
6edfbbad | 6858 | { |
60124e18 AM |
6859 | if (sym_sec != NULL) |
6860 | { | |
6861 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6862 | pp = (struct ppc_dyn_relocs **) vpp; | |
6863 | } | |
6864 | else | |
6865 | { | |
6866 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6867 | pp = (struct ppc_dyn_relocs **) vpp; | |
6868 | } | |
6869 | ||
6870 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6871 | with local syms for a given section. Don't report a dynreloc | |
6872 | miscount. */ | |
6873 | if (*pp == NULL) | |
6874 | return TRUE; | |
6edfbbad | 6875 | } |
8c1d1bb8 AM |
6876 | |
6877 | while ((p = *pp) != NULL) | |
6878 | { | |
6879 | if (p->sec == sec) | |
6880 | { | |
1d483afe | 6881 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6882 | p->pc_count -= 1; |
6883 | p->count -= 1; | |
6884 | if (p->count == 0) | |
6885 | *pp = p->next; | |
6886 | return TRUE; | |
6887 | } | |
6888 | pp = &p->next; | |
6889 | } | |
6890 | ||
6891 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6892 | sec->owner, sec); | |
6893 | bfd_set_error (bfd_error_bad_value); | |
6894 | return FALSE; | |
6895 | } | |
6896 | ||
754021d0 AM |
6897 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6898 | only remove those associated with functions in discarded link-once | |
6899 | sections, or weakly defined functions that have been overridden. It | |
6900 | would be possible to remove many more entries for statically linked | |
6901 | applications. */ | |
6902 | ||
b34976b6 | 6903 | bfd_boolean |
33c0ec9d | 6904 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
6905 | { |
6906 | bfd *ibfd; | |
754021d0 | 6907 | bfd_boolean some_edited = FALSE; |
3f764659 | 6908 | asection *need_pad = NULL; |
1e2f5b6e | 6909 | |
411e1bfb | 6910 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6911 | { |
6912 | asection *sec; | |
6913 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6914 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6915 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6916 | struct elf_link_hash_entry **sym_hashes; |
6917 | bfd_vma offset; | |
74f0fb50 | 6918 | struct _opd_sec_data *opd; |
3f764659 JJ |
6919 | bfd_boolean need_edit, add_aux_fields; |
6920 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6921 | |
6922 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6923 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6924 | continue; |
6925 | ||
4b85d634 AM |
6926 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6927 | continue; | |
6928 | ||
1e2f5b6e AM |
6929 | if (sec->output_section == bfd_abs_section_ptr) |
6930 | continue; | |
6931 | ||
6932 | /* Look through the section relocs. */ | |
6933 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6934 | continue; | |
6935 | ||
6cdc0ccc | 6936 | local_syms = NULL; |
0ffa91dd | 6937 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6938 | sym_hashes = elf_sym_hashes (ibfd); |
6939 | ||
6940 | /* Read the relocations. */ | |
4ce794b7 | 6941 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6942 | info->keep_memory); |
1e2f5b6e | 6943 | if (relstart == NULL) |
b34976b6 | 6944 | return FALSE; |
1e2f5b6e AM |
6945 | |
6946 | /* First run through the relocs to check they are sane, and to | |
6947 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6948 | need_edit = FALSE; |
3f764659 | 6949 | need_pad = sec; |
1e2f5b6e AM |
6950 | offset = 0; |
6951 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6952 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6953 | { |
04c9666a | 6954 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6955 | unsigned long r_symndx; |
6956 | asection *sym_sec; | |
6957 | struct elf_link_hash_entry *h; | |
6958 | Elf_Internal_Sym *sym; | |
6959 | ||
3f764659 | 6960 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6961 | only interested in the reloc pointing to a function entry |
6962 | point. */ | |
50bc7936 AM |
6963 | if (rel->r_offset != offset |
6964 | || rel + 1 >= relend | |
6965 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6966 | { |
6967 | /* If someone messes with .opd alignment then after a | |
6968 | "ld -r" we might have padding in the middle of .opd. | |
6969 | Also, there's nothing to prevent someone putting | |
6970 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6971 | optimization for them! */ |
3f764659 | 6972 | broken_opd: |
1e2f5b6e | 6973 | (*_bfd_error_handler) |
d003868e | 6974 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6975 | need_edit = FALSE; |
1e2f5b6e AM |
6976 | break; |
6977 | } | |
6978 | ||
50bc7936 AM |
6979 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6980 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6981 | { | |
6982 | (*_bfd_error_handler) | |
d003868e AM |
6983 | (_("%B: unexpected reloc type %u in .opd section"), |
6984 | ibfd, r_type); | |
50bc7936 AM |
6985 | need_edit = FALSE; |
6986 | break; | |
6987 | } | |
6988 | ||
1e2f5b6e | 6989 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6990 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6991 | r_symndx, ibfd)) | |
50bc7936 | 6992 | goto error_ret; |
1e2f5b6e AM |
6993 | |
6994 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6995 | { | |
411e1bfb AM |
6996 | const char *sym_name; |
6997 | if (h != NULL) | |
6998 | sym_name = h->root.root.string; | |
6999 | else | |
26c61ae5 L |
7000 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7001 | sym_sec); | |
411e1bfb | 7002 | |
1e2f5b6e | 7003 | (*_bfd_error_handler) |
d003868e AM |
7004 | (_("%B: undefined sym `%s' in .opd section"), |
7005 | ibfd, sym_name); | |
b34976b6 | 7006 | need_edit = FALSE; |
1e2f5b6e AM |
7007 | break; |
7008 | } | |
7009 | ||
51020317 AM |
7010 | /* opd entries are always for functions defined in the |
7011 | current input bfd. If the symbol isn't defined in the | |
7012 | input bfd, then we won't be using the function in this | |
7013 | bfd; It must be defined in a linkonce section in another | |
7014 | bfd, or is weak. It's also possible that we are | |
7015 | discarding the function due to a linker script /DISCARD/, | |
7016 | which we test for via the output_section. */ | |
7017 | if (sym_sec->owner != ibfd | |
7018 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7019 | need_edit = TRUE; |
1e2f5b6e | 7020 | |
50bc7936 | 7021 | rel += 2; |
3f764659 JJ |
7022 | if (rel == relend |
7023 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7024 | { | |
7025 | if (sec->size == offset + 24) | |
7026 | { | |
7027 | need_pad = NULL; | |
7028 | break; | |
7029 | } | |
7030 | if (rel == relend && sec->size == offset + 16) | |
7031 | { | |
7032 | cnt_16b++; | |
7033 | break; | |
7034 | } | |
7035 | goto broken_opd; | |
7036 | } | |
7037 | ||
7038 | if (rel->r_offset == offset + 24) | |
7039 | offset += 24; | |
7040 | else if (rel->r_offset != offset + 16) | |
7041 | goto broken_opd; | |
7042 | else if (rel + 1 < relend | |
7043 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7044 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7045 | { | |
7046 | offset += 16; | |
7047 | cnt_16b++; | |
7048 | } | |
7049 | else if (rel + 2 < relend | |
7050 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7051 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7052 | { | |
7053 | offset += 24; | |
7054 | rel += 1; | |
7055 | } | |
7056 | else | |
7057 | goto broken_opd; | |
1e2f5b6e AM |
7058 | } |
7059 | ||
3f764659 JJ |
7060 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7061 | ||
7062 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7063 | { |
7064 | Elf_Internal_Rela *write_rel; | |
7065 | bfd_byte *rptr, *wptr; | |
983bddc8 | 7066 | bfd_byte *new_contents; |
b34976b6 | 7067 | bfd_boolean skip; |
3f764659 | 7068 | long opd_ent_size; |
74f0fb50 AM |
7069 | bfd_size_type amt; |
7070 | ||
983bddc8 | 7071 | new_contents = NULL; |
74f0fb50 AM |
7072 | amt = sec->size * sizeof (long) / 8; |
7073 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7074 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7075 | if (opd->adjust == NULL) |
7076 | return FALSE; | |
7077 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7078 | |
7079 | /* This seems a waste of time as input .opd sections are all | |
7080 | zeros as generated by gcc, but I suppose there's no reason | |
7081 | this will always be so. We might start putting something in | |
7082 | the third word of .opd entries. */ | |
7083 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7084 | { | |
eea6121a AM |
7085 | bfd_byte *loc; |
7086 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7087 | { |
eea6121a AM |
7088 | if (loc != NULL) |
7089 | free (loc); | |
50bc7936 | 7090 | error_ret: |
6cdc0ccc AM |
7091 | if (local_syms != NULL |
7092 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7093 | free (local_syms); | |
6cdc0ccc AM |
7094 | if (elf_section_data (sec)->relocs != relstart) |
7095 | free (relstart); | |
b34976b6 | 7096 | return FALSE; |
6cdc0ccc | 7097 | } |
1e2f5b6e AM |
7098 | sec->contents = loc; |
7099 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7100 | } | |
7101 | ||
7102 | elf_section_data (sec)->relocs = relstart; | |
7103 | ||
3f764659 | 7104 | new_contents = sec->contents; |
3f764659 JJ |
7105 | if (add_aux_fields) |
7106 | { | |
7107 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7108 | if (new_contents == NULL) | |
7109 | return FALSE; | |
7110 | need_pad = FALSE; | |
3f764659 | 7111 | } |
b4f4e59f AM |
7112 | wptr = new_contents; |
7113 | rptr = sec->contents; | |
3f764659 | 7114 | |
1e2f5b6e | 7115 | write_rel = relstart; |
b34976b6 | 7116 | skip = FALSE; |
1e2f5b6e | 7117 | offset = 0; |
3f764659 | 7118 | opd_ent_size = 0; |
1e2f5b6e AM |
7119 | for (rel = relstart; rel < relend; rel++) |
7120 | { | |
50bc7936 AM |
7121 | unsigned long r_symndx; |
7122 | asection *sym_sec; | |
7123 | struct elf_link_hash_entry *h; | |
7124 | Elf_Internal_Sym *sym; | |
7125 | ||
7126 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7127 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7128 | r_symndx, ibfd)) |
50bc7936 AM |
7129 | goto error_ret; |
7130 | ||
1e2f5b6e AM |
7131 | if (rel->r_offset == offset) |
7132 | { | |
50bc7936 | 7133 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7134 | |
7135 | /* See if the .opd entry is full 24 byte or | |
7136 | 16 byte (with fd_aux entry overlapped with next | |
7137 | fd_func). */ | |
7138 | opd_ent_size = 24; | |
7139 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7140 | || (rel + 3 < relend | |
7141 | && rel[2].r_offset == offset + 16 | |
7142 | && rel[3].r_offset == offset + 24 | |
7143 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7144 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7145 | opd_ent_size = 16; | |
7146 | ||
4025353c AM |
7147 | if (h != NULL |
7148 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7149 | { |
4dfe6ac6 NC |
7150 | struct ppc_link_hash_table *htab; |
7151 | ||
7152 | htab = ppc_hash_table (info); | |
7153 | if (htab != NULL) | |
7154 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7155 | htab); | |
c4f68ce3 AM |
7156 | if (fdh != NULL |
7157 | && fdh->elf.root.type != bfd_link_hash_defined | |
7158 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7159 | fdh = NULL; | |
7160 | } | |
1e2f5b6e | 7161 | |
51020317 AM |
7162 | skip = (sym_sec->owner != ibfd |
7163 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7164 | if (skip) |
7165 | { | |
4025353c | 7166 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7167 | { |
7168 | /* Arrange for the function descriptor sym | |
7169 | to be dropped. */ | |
d6fe2dc1 AM |
7170 | fdh->elf.root.u.def.value = 0; |
7171 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7172 | } |
74f0fb50 | 7173 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7174 | } |
7175 | else | |
1e2f5b6e AM |
7176 | { |
7177 | /* We'll be keeping this opd entry. */ | |
7178 | ||
4025353c | 7179 | if (fdh != NULL) |
1e2f5b6e | 7180 | { |
754021d0 AM |
7181 | /* Redefine the function descriptor symbol to |
7182 | this location in the opd section. It is | |
7183 | necessary to update the value here rather | |
7184 | than using an array of adjustments as we do | |
7185 | for local symbols, because various places | |
7186 | in the generic ELF code use the value | |
7187 | stored in u.def.value. */ | |
3f764659 | 7188 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7189 | fdh->adjust_done = 1; |
1e2f5b6e | 7190 | } |
754021d0 AM |
7191 | |
7192 | /* Local syms are a bit tricky. We could | |
7193 | tweak them as they can be cached, but | |
7194 | we'd need to look through the local syms | |
7195 | for the function descriptor sym which we | |
7196 | don't have at the moment. So keep an | |
7197 | array of adjustments. */ | |
74f0fb50 | 7198 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7199 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7200 | |
7201 | if (wptr != rptr) | |
3f764659 JJ |
7202 | memcpy (wptr, rptr, opd_ent_size); |
7203 | wptr += opd_ent_size; | |
7204 | if (add_aux_fields && opd_ent_size == 16) | |
7205 | { | |
7206 | memset (wptr, '\0', 8); | |
7207 | wptr += 8; | |
7208 | } | |
1e2f5b6e | 7209 | } |
3f764659 JJ |
7210 | rptr += opd_ent_size; |
7211 | offset += opd_ent_size; | |
1e2f5b6e AM |
7212 | } |
7213 | ||
50bc7936 AM |
7214 | if (skip) |
7215 | { | |
60124e18 AM |
7216 | if (!NO_OPD_RELOCS |
7217 | && !info->relocatable | |
18d944df AM |
7218 | && !dec_dynrel_count (rel->r_info, sec, info, |
7219 | NULL, h, sym_sec)) | |
8c1d1bb8 | 7220 | goto error_ret; |
50bc7936 AM |
7221 | } |
7222 | else | |
1e2f5b6e | 7223 | { |
50bc7936 AM |
7224 | /* We need to adjust any reloc offsets to point to the |
7225 | new opd entries. While we're at it, we may as well | |
7226 | remove redundant relocs. */ | |
74f0fb50 | 7227 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7228 | if (write_rel != rel) |
7229 | memcpy (write_rel, rel, sizeof (*rel)); | |
7230 | ++write_rel; | |
7231 | } | |
7232 | } | |
7233 | ||
3f764659 | 7234 | sec->size = wptr - new_contents; |
1e2f5b6e | 7235 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7236 | if (add_aux_fields) |
7237 | { | |
7238 | free (sec->contents); | |
7239 | sec->contents = new_contents; | |
7240 | } | |
7241 | ||
05bf9422 | 7242 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
7243 | elf_bfd_final_link if we are emitting relocs. */ |
7244 | elf_section_data (sec)->rel_hdr.sh_size | |
7245 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
7246 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 7247 | some_edited = TRUE; |
1e2f5b6e | 7248 | } |
6cdc0ccc | 7249 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7250 | free (relstart); |
6cdc0ccc | 7251 | |
411e1bfb AM |
7252 | if (local_syms != NULL |
7253 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7254 | { | |
7255 | if (!info->keep_memory) | |
7256 | free (local_syms); | |
7257 | else | |
7258 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7259 | } | |
7260 | } | |
7261 | ||
754021d0 AM |
7262 | if (some_edited) |
7263 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7264 | ||
3f764659 JJ |
7265 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7266 | long, add a 8 byte padding after it. */ | |
7267 | if (need_pad != NULL && !info->relocatable) | |
7268 | { | |
7269 | bfd_byte *p; | |
7270 | ||
7271 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7272 | { | |
7273 | BFD_ASSERT (need_pad->size > 0); | |
7274 | ||
7275 | p = bfd_malloc (need_pad->size + 8); | |
7276 | if (p == NULL) | |
7277 | return FALSE; | |
699733f6 | 7278 | |
3f764659 JJ |
7279 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7280 | p, 0, need_pad->size)) | |
7281 | return FALSE; | |
7282 | ||
7283 | need_pad->contents = p; | |
7284 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7285 | } | |
7286 | else | |
7287 | { | |
7288 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7289 | if (p == NULL) | |
7290 | return FALSE; | |
7291 | ||
7292 | need_pad->contents = p; | |
7293 | } | |
7294 | ||
7295 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7296 | need_pad->size += 8; | |
7297 | } | |
7298 | ||
411e1bfb AM |
7299 | return TRUE; |
7300 | } | |
7301 | ||
e1918d23 | 7302 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7303 | |
e1918d23 | 7304 | asection * |
33c0ec9d AM |
7305 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7306 | int no_tls_get_addr_opt, | |
7307 | int *no_multi_toc) | |
411e1bfb | 7308 | { |
411e1bfb AM |
7309 | struct ppc_link_hash_table *htab; |
7310 | ||
411e1bfb | 7311 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7312 | if (htab == NULL) |
7313 | return NULL; | |
7314 | ||
33c0ec9d AM |
7315 | if (*no_multi_toc) |
7316 | htab->do_multi_toc = 0; | |
7317 | else if (!htab->do_multi_toc) | |
7318 | *no_multi_toc = 1; | |
7319 | ||
3a71aa26 AM |
7320 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7321 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7322 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7323 | /* Move dynamic linking info to the function descriptor sym. */ |
7324 | if (htab->tls_get_addr != NULL) | |
7325 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7326 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7327 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7328 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7329 | if (!no_tls_get_addr_opt) |
7330 | { | |
7331 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7332 | ||
7333 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7334 | FALSE, FALSE, TRUE); | |
7335 | if (opt != NULL) | |
7336 | func_desc_adjust (opt, info); | |
7337 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7338 | FALSE, FALSE, TRUE); | |
7339 | if (opt_fd != NULL | |
7340 | && (opt_fd->root.type == bfd_link_hash_defined | |
7341 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7342 | { | |
7343 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7344 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7345 | be calling __tls_get_addr via a plt call stub, then | |
7346 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7347 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7348 | if (htab->elf.dynamic_sections_created | |
7349 | && tga_fd != NULL | |
7350 | && (tga_fd->type == STT_FUNC | |
7351 | || tga_fd->needs_plt) | |
7352 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7353 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7354 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7355 | { | |
7356 | struct plt_entry *ent; | |
7357 | ||
7358 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7359 | if (ent->plt.refcount > 0) | |
7360 | break; | |
7361 | if (ent != NULL) | |
7362 | { | |
7363 | tga_fd->root.type = bfd_link_hash_indirect; | |
7364 | tga_fd->root.u.i.link = &opt_fd->root; | |
7365 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7366 | if (opt_fd->dynindx != -1) | |
7367 | { | |
7368 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7369 | opt_fd->dynindx = -1; | |
7370 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7371 | opt_fd->dynstr_index); | |
7372 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
7373 | return FALSE; | |
7374 | } | |
7375 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7376 | tga = &htab->tls_get_addr->elf; | |
7377 | if (opt != NULL && tga != NULL) | |
7378 | { | |
7379 | tga->root.type = bfd_link_hash_indirect; | |
7380 | tga->root.u.i.link = &opt->root; | |
7381 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7382 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7383 | tga->forced_local); | |
7384 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7385 | } | |
7386 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7387 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7388 | if (htab->tls_get_addr != NULL) | |
7389 | { | |
7390 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7391 | htab->tls_get_addr->is_func = 1; | |
7392 | } | |
7393 | } | |
7394 | } | |
7395 | } | |
7396 | else | |
7397 | no_tls_get_addr_opt = TRUE; | |
7398 | } | |
7399 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 7400 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7401 | } |
8387904d | 7402 | |
3a71aa26 AM |
7403 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7404 | HASH1 or HASH2. */ | |
8387904d | 7405 | |
3a71aa26 AM |
7406 | static bfd_boolean |
7407 | branch_reloc_hash_match (const bfd *ibfd, | |
7408 | const Elf_Internal_Rela *rel, | |
7409 | const struct ppc_link_hash_entry *hash1, | |
7410 | const struct ppc_link_hash_entry *hash2) | |
7411 | { | |
7412 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7413 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7414 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7415 | ||
e054468f | 7416 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7417 | { |
3a71aa26 AM |
7418 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7419 | struct elf_link_hash_entry *h; | |
8387904d | 7420 | |
3a71aa26 | 7421 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7422 | h = elf_follow_link (h); |
3a71aa26 AM |
7423 | if (h == &hash1->elf || h == &hash2->elf) |
7424 | return TRUE; | |
a48ebf4d | 7425 | } |
3a71aa26 | 7426 | return FALSE; |
951fd09b | 7427 | } |
411e1bfb | 7428 | |
951fd09b AM |
7429 | /* Run through all the TLS relocs looking for optimization |
7430 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7431 | a preliminary section layout so that we know the TLS segment | |
7432 | offsets. We can't optimize earlier because some optimizations need | |
7433 | to know the tp offset, and we need to optimize before allocating | |
7434 | dynamic relocations. */ | |
7435 | ||
7436 | bfd_boolean | |
33c0ec9d | 7437 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7438 | { |
7439 | bfd *ibfd; | |
7440 | asection *sec; | |
7441 | struct ppc_link_hash_table *htab; | |
102890f0 | 7442 | int pass; |
951fd09b | 7443 | |
1d483afe | 7444 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7445 | return TRUE; |
7446 | ||
951fd09b | 7447 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7448 | if (htab == NULL) |
7449 | return FALSE; | |
7450 | ||
411e1bfb AM |
7451 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7452 | { | |
7453 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
7454 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
7455 | unsigned char *toc_ref = NULL; | |
411e1bfb | 7456 | |
102890f0 AM |
7457 | /* Look at all the sections for this file. Make two passes over |
7458 | the relocs. On the first pass, mark toc entries involved | |
7459 | with tls relocs, and check that tls relocs involved in | |
7460 | setting up a tls_get_addr call are indeed followed by such a | |
7461 | call. If they are not, exclude them from the optimizations | |
7462 | done on the second pass. */ | |
7463 | for (pass = 0; pass < 2; ++pass) | |
7464 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7465 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7466 | { | |
7467 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 7468 | |
102890f0 AM |
7469 | /* Read the relocations. */ |
7470 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7471 | info->keep_memory); | |
7472 | if (relstart == NULL) | |
7473 | return FALSE; | |
411e1bfb | 7474 | |
102890f0 AM |
7475 | relend = relstart + sec->reloc_count; |
7476 | for (rel = relstart; rel < relend; rel++) | |
7477 | { | |
7478 | enum elf_ppc64_reloc_type r_type; | |
7479 | unsigned long r_symndx; | |
7480 | struct elf_link_hash_entry *h; | |
7481 | Elf_Internal_Sym *sym; | |
7482 | asection *sym_sec; | |
7483 | char *tls_mask; | |
7484 | char tls_set, tls_clear, tls_type = 0; | |
7485 | bfd_vma value; | |
7486 | bfd_boolean ok_tprel, is_local; | |
7487 | long toc_ref_index = 0; | |
7488 | int expecting_tls_get_addr = 0; | |
411e1bfb | 7489 | |
102890f0 AM |
7490 | r_symndx = ELF64_R_SYM (rel->r_info); |
7491 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7492 | r_symndx, ibfd)) | |
7493 | { | |
7494 | err_free_rel: | |
7495 | if (elf_section_data (sec)->relocs != relstart) | |
7496 | free (relstart); | |
7497 | if (toc_ref != NULL) | |
7498 | free (toc_ref); | |
7499 | if (locsyms != NULL | |
0ffa91dd | 7500 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7501 | != (unsigned char *) locsyms)) |
7502 | free (locsyms); | |
7503 | return FALSE; | |
7504 | } | |
411e1bfb | 7505 | |
102890f0 AM |
7506 | if (h != NULL) |
7507 | { | |
766bc656 AM |
7508 | if (h->root.type == bfd_link_hash_defined |
7509 | || h->root.type == bfd_link_hash_defweak) | |
7510 | value = h->root.u.def.value; | |
7511 | else if (h->root.type == bfd_link_hash_undefweak) | |
7512 | value = 0; | |
7513 | else | |
102890f0 | 7514 | continue; |
102890f0 AM |
7515 | } |
7516 | else | |
7517 | /* Symbols referenced by TLS relocs must be of type | |
7518 | STT_TLS. So no need for .opd local sym adjust. */ | |
7519 | value = sym->st_value; | |
7520 | ||
7521 | ok_tprel = FALSE; | |
7522 | is_local = FALSE; | |
7523 | if (h == NULL | |
7524 | || !h->def_dynamic) | |
7525 | { | |
7526 | is_local = TRUE; | |
766bc656 AM |
7527 | if (h != NULL |
7528 | && h->root.type == bfd_link_hash_undefweak) | |
7529 | ok_tprel = TRUE; | |
7530 | else | |
7531 | { | |
7532 | value += sym_sec->output_offset; | |
7533 | value += sym_sec->output_section->vma; | |
7534 | value -= htab->elf.tls_sec->vma; | |
7535 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7536 | < (bfd_vma) 1 << 32); | |
7537 | } | |
102890f0 | 7538 | } |
951fd09b | 7539 | |
102890f0 AM |
7540 | r_type = ELF64_R_TYPE (rel->r_info); |
7541 | switch (r_type) | |
7542 | { | |
7543 | case R_PPC64_GOT_TLSLD16: | |
7544 | case R_PPC64_GOT_TLSLD16_LO: | |
7545 | expecting_tls_get_addr = 1; | |
7546 | /* Fall thru */ | |
7547 | ||
7548 | case R_PPC64_GOT_TLSLD16_HI: | |
7549 | case R_PPC64_GOT_TLSLD16_HA: | |
7550 | /* These relocs should never be against a symbol | |
7551 | defined in a shared lib. Leave them alone if | |
7552 | that turns out to be the case. */ | |
7553 | if (!is_local) | |
7554 | continue; | |
411e1bfb | 7555 | |
102890f0 | 7556 | /* LD -> LE */ |
411e1bfb | 7557 | tls_set = 0; |
102890f0 AM |
7558 | tls_clear = TLS_LD; |
7559 | tls_type = TLS_TLS | TLS_LD; | |
7560 | break; | |
411e1bfb | 7561 | |
102890f0 AM |
7562 | case R_PPC64_GOT_TLSGD16: |
7563 | case R_PPC64_GOT_TLSGD16_LO: | |
7564 | expecting_tls_get_addr = 1; | |
7565 | /* Fall thru */ | |
7566 | ||
7567 | case R_PPC64_GOT_TLSGD16_HI: | |
7568 | case R_PPC64_GOT_TLSGD16_HA: | |
7569 | if (ok_tprel) | |
7570 | /* GD -> LE */ | |
411e1bfb | 7571 | tls_set = 0; |
102890f0 AM |
7572 | else |
7573 | /* GD -> IE */ | |
7574 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7575 | tls_clear = TLS_GD; | |
7576 | tls_type = TLS_TLS | TLS_GD; | |
7577 | break; | |
7578 | ||
7579 | case R_PPC64_GOT_TPREL16_DS: | |
7580 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7581 | case R_PPC64_GOT_TPREL16_HI: | |
7582 | case R_PPC64_GOT_TPREL16_HA: | |
7583 | if (ok_tprel) | |
7584 | { | |
7585 | /* IE -> LE */ | |
7586 | tls_set = 0; | |
7587 | tls_clear = TLS_TPREL; | |
7588 | tls_type = TLS_TLS | TLS_TPREL; | |
7589 | break; | |
7590 | } | |
411e1bfb AM |
7591 | continue; |
7592 | ||
102890f0 AM |
7593 | case R_PPC64_TOC16: |
7594 | case R_PPC64_TOC16_LO: | |
7595 | case R_PPC64_TLS: | |
727fc41e AM |
7596 | case R_PPC64_TLSGD: |
7597 | case R_PPC64_TLSLD: | |
102890f0 AM |
7598 | if (sym_sec == NULL || sym_sec != toc) |
7599 | continue; | |
7600 | ||
7601 | /* Mark this toc entry as referenced by a TLS | |
7602 | code sequence. We can do that now in the | |
7603 | case of R_PPC64_TLS, and after checking for | |
7604 | tls_get_addr for the TOC16 relocs. */ | |
7605 | if (toc_ref == NULL) | |
7606 | { | |
7607 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7608 | if (toc_ref == NULL) | |
7609 | goto err_free_rel; | |
7610 | } | |
7611 | if (h != NULL) | |
7612 | value = h->root.u.def.value; | |
7613 | else | |
7614 | value = sym->st_value; | |
7615 | value += rel->r_addend; | |
7616 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7617 | toc_ref_index = value / 8; | |
727fc41e AM |
7618 | if (r_type == R_PPC64_TLS |
7619 | || r_type == R_PPC64_TLSGD | |
7620 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7621 | { |
7622 | toc_ref[toc_ref_index] = 1; | |
7623 | continue; | |
7624 | } | |
7625 | ||
7626 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7627 | continue; | |
7628 | ||
7629 | tls_set = 0; | |
7630 | tls_clear = 0; | |
7631 | expecting_tls_get_addr = 2; | |
7632 | break; | |
7633 | ||
7634 | case R_PPC64_TPREL64: | |
7635 | if (pass == 0 | |
7636 | || sec != toc | |
7637 | || toc_ref == NULL | |
7638 | || !toc_ref[rel->r_offset / 8]) | |
7639 | continue; | |
7640 | if (ok_tprel) | |
7641 | { | |
7642 | /* IE -> LE */ | |
7643 | tls_set = TLS_EXPLICIT; | |
7644 | tls_clear = TLS_TPREL; | |
7645 | break; | |
7646 | } | |
7647 | continue; | |
7648 | ||
7649 | case R_PPC64_DTPMOD64: | |
7650 | if (pass == 0 | |
7651 | || sec != toc | |
7652 | || toc_ref == NULL | |
7653 | || !toc_ref[rel->r_offset / 8]) | |
7654 | continue; | |
7655 | if (rel + 1 < relend | |
7656 | && (rel[1].r_info | |
7657 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7658 | && rel[1].r_offset == rel->r_offset + 8) | |
7659 | { | |
7660 | if (ok_tprel) | |
7661 | /* GD -> LE */ | |
7662 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7663 | else | |
7664 | /* GD -> IE */ | |
7665 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7666 | tls_clear = TLS_GD; | |
7667 | } | |
7668 | else | |
7669 | { | |
7670 | if (!is_local) | |
7671 | continue; | |
7672 | ||
7673 | /* LD -> LE */ | |
7674 | tls_set = TLS_EXPLICIT; | |
7675 | tls_clear = TLS_LD; | |
7676 | } | |
7677 | break; | |
7678 | ||
7679 | default: | |
7680 | continue; | |
7681 | } | |
7682 | ||
7683 | if (pass == 0) | |
7684 | { | |
727fc41e AM |
7685 | if (!expecting_tls_get_addr |
7686 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7687 | continue; |
7688 | ||
3a71aa26 AM |
7689 | if (rel + 1 < relend |
7690 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7691 | htab->tls_get_addr, | |
7692 | htab->tls_get_addr_fd)) | |
102890f0 | 7693 | { |
3a71aa26 | 7694 | if (expecting_tls_get_addr == 2) |
102890f0 | 7695 | { |
3a71aa26 AM |
7696 | /* Check for toc tls entries. */ |
7697 | char *toc_tls; | |
7698 | int retval; | |
7699 | ||
7700 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7701 | &locsyms, | |
7702 | rel, ibfd); | |
7703 | if (retval == 0) | |
7704 | goto err_free_rel; | |
7705 | if (retval > 1 && toc_tls != NULL) | |
7706 | toc_ref[toc_ref_index] = 1; | |
102890f0 | 7707 | } |
3a71aa26 | 7708 | continue; |
102890f0 AM |
7709 | } |
7710 | ||
7711 | if (expecting_tls_get_addr != 1) | |
7712 | continue; | |
7713 | ||
7714 | /* Uh oh, we didn't find the expected call. We | |
7715 | could just mark this symbol to exclude it | |
7716 | from tls optimization but it's safer to skip | |
7717 | the entire section. */ | |
7718 | sec->has_tls_reloc = 0; | |
7719 | break; | |
7720 | } | |
7721 | ||
85f7a9cb | 7722 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7723 | { |
7724 | struct plt_entry *ent; | |
7725 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7726 | ent != NULL; | |
7727 | ent = ent->next) | |
7728 | if (ent->addend == 0) | |
411e1bfb | 7729 | { |
102890f0 | 7730 | if (ent->plt.refcount > 0) |
30038c59 | 7731 | { |
102890f0 AM |
7732 | ent->plt.refcount -= 1; |
7733 | expecting_tls_get_addr = 0; | |
30038c59 | 7734 | } |
102890f0 | 7735 | break; |
411e1bfb | 7736 | } |
102890f0 | 7737 | } |
411e1bfb | 7738 | |
85f7a9cb | 7739 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7740 | { |
7741 | struct plt_entry *ent; | |
7742 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7743 | ent != NULL; | |
7744 | ent = ent->next) | |
7745 | if (ent->addend == 0) | |
411e1bfb | 7746 | { |
102890f0 AM |
7747 | if (ent->plt.refcount > 0) |
7748 | ent->plt.refcount -= 1; | |
7749 | break; | |
411e1bfb | 7750 | } |
102890f0 | 7751 | } |
411e1bfb | 7752 | |
102890f0 | 7753 | if (tls_clear == 0) |
30038c59 AM |
7754 | continue; |
7755 | ||
102890f0 AM |
7756 | if ((tls_set & TLS_EXPLICIT) == 0) |
7757 | { | |
7758 | struct got_entry *ent; | |
411e1bfb | 7759 | |
102890f0 AM |
7760 | /* Adjust got entry for this reloc. */ |
7761 | if (h != NULL) | |
7762 | ent = h->got.glist; | |
7763 | else | |
7764 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7765 | |
102890f0 AM |
7766 | for (; ent != NULL; ent = ent->next) |
7767 | if (ent->addend == rel->r_addend | |
7768 | && ent->owner == ibfd | |
7769 | && ent->tls_type == tls_type) | |
7770 | break; | |
7771 | if (ent == NULL) | |
7772 | abort (); | |
411e1bfb | 7773 | |
102890f0 AM |
7774 | if (tls_set == 0) |
7775 | { | |
7776 | /* We managed to get rid of a got entry. */ | |
7777 | if (ent->got.refcount > 0) | |
7778 | ent->got.refcount -= 1; | |
7779 | } | |
7780 | } | |
7781 | else | |
7782 | { | |
7783 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7784 | we'll lose one or two dyn relocs. */ | |
7785 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7786 | NULL, h, sym_sec)) | |
7787 | return FALSE; | |
411e1bfb | 7788 | |
102890f0 AM |
7789 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7790 | { | |
7791 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7792 | NULL, h, sym_sec)) | |
7793 | return FALSE; | |
7794 | } | |
7795 | } | |
411e1bfb | 7796 | |
102890f0 AM |
7797 | *tls_mask |= tls_set; |
7798 | *tls_mask &= ~tls_clear; | |
7799 | } | |
8c1d1bb8 | 7800 | |
102890f0 AM |
7801 | if (elf_section_data (sec)->relocs != relstart) |
7802 | free (relstart); | |
7803 | } | |
411e1bfb | 7804 | |
727fc41e AM |
7805 | if (toc_ref != NULL) |
7806 | free (toc_ref); | |
411e1bfb | 7807 | |
727fc41e AM |
7808 | if (locsyms != NULL |
7809 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7810 | { | |
7811 | if (!info->keep_memory) | |
7812 | free (locsyms); | |
7813 | else | |
7814 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7815 | } | |
7816 | } | |
b34976b6 | 7817 | return TRUE; |
1e2f5b6e | 7818 | } |
b34976b6 | 7819 | |
c5614fa4 AM |
7820 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7821 | the values of any global symbols in a toc section that has been | |
7822 | edited. Globals in toc sections should be a rarity, so this function | |
7823 | sets a flag if any are found in toc sections other than the one just | |
7824 | edited, so that futher hash table traversals can be avoided. */ | |
7825 | ||
7826 | struct adjust_toc_info | |
7827 | { | |
7828 | asection *toc; | |
7829 | unsigned long *skip; | |
7830 | bfd_boolean global_toc_syms; | |
7831 | }; | |
7832 | ||
7833 | static bfd_boolean | |
7834 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7835 | { | |
7836 | struct ppc_link_hash_entry *eh; | |
7837 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7838 | ||
7839 | if (h->root.type == bfd_link_hash_indirect) | |
7840 | return TRUE; | |
7841 | ||
7842 | if (h->root.type == bfd_link_hash_warning) | |
7843 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7844 | ||
7845 | if (h->root.type != bfd_link_hash_defined | |
7846 | && h->root.type != bfd_link_hash_defweak) | |
7847 | return TRUE; | |
7848 | ||
7849 | eh = (struct ppc_link_hash_entry *) h; | |
7850 | if (eh->adjust_done) | |
7851 | return TRUE; | |
7852 | ||
7853 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7854 | { | |
7855 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7856 | if (skip != (unsigned long) -1) | |
7857 | eh->elf.root.u.def.value -= skip; | |
7858 | else | |
7859 | { | |
7860 | (*_bfd_error_handler) | |
7861 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7862 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7863 | eh->elf.root.u.def.value = 0; | |
7864 | } | |
7865 | eh->adjust_done = 1; | |
7866 | } | |
7867 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7868 | toc_inf->global_toc_syms = TRUE; | |
7869 | ||
7870 | return TRUE; | |
7871 | } | |
7872 | ||
7873 | /* Examine all relocs referencing .toc sections in order to remove | |
7874 | unused .toc entries. */ | |
7875 | ||
7876 | bfd_boolean | |
33c0ec9d | 7877 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
7878 | { |
7879 | bfd *ibfd; | |
7880 | struct adjust_toc_info toc_inf; | |
7881 | ||
7882 | toc_inf.global_toc_syms = TRUE; | |
7883 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7884 | { | |
7885 | asection *toc, *sec; | |
7886 | Elf_Internal_Shdr *symtab_hdr; | |
7887 | Elf_Internal_Sym *local_syms; | |
7888 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7889 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7890 | unsigned long *skip, *drop; |
7891 | unsigned char *used; | |
7892 | unsigned char *keep, last, some_unused; | |
7893 | ||
7894 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7895 | if (toc == NULL | |
92b7a70f | 7896 | || toc->size == 0 |
c5614fa4 AM |
7897 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7898 | || elf_discarded_section (toc)) | |
7899 | continue; | |
7900 | ||
7901 | local_syms = NULL; | |
0ffa91dd | 7902 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7903 | sym_hashes = elf_sym_hashes (ibfd); |
7904 | ||
7905 | /* Look at sections dropped from the final link. */ | |
7906 | skip = NULL; | |
7907 | relstart = NULL; | |
7908 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7909 | { | |
7910 | if (sec->reloc_count == 0 | |
7911 | || !elf_discarded_section (sec) | |
7912 | || get_opd_info (sec) | |
7913 | || (sec->flags & SEC_ALLOC) == 0 | |
7914 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7915 | continue; | |
7916 | ||
7917 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7918 | if (relstart == NULL) | |
7919 | goto error_ret; | |
7920 | ||
7921 | /* Run through the relocs to see which toc entries might be | |
7922 | unused. */ | |
7923 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7924 | { | |
7925 | enum elf_ppc64_reloc_type r_type; | |
7926 | unsigned long r_symndx; | |
7927 | asection *sym_sec; | |
7928 | struct elf_link_hash_entry *h; | |
7929 | Elf_Internal_Sym *sym; | |
7930 | bfd_vma val; | |
7931 | ||
7932 | r_type = ELF64_R_TYPE (rel->r_info); | |
7933 | switch (r_type) | |
7934 | { | |
7935 | default: | |
7936 | continue; | |
7937 | ||
7938 | case R_PPC64_TOC16: | |
7939 | case R_PPC64_TOC16_LO: | |
7940 | case R_PPC64_TOC16_HI: | |
7941 | case R_PPC64_TOC16_HA: | |
7942 | case R_PPC64_TOC16_DS: | |
7943 | case R_PPC64_TOC16_LO_DS: | |
7944 | break; | |
7945 | } | |
7946 | ||
7947 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7948 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7949 | r_symndx, ibfd)) | |
7950 | goto error_ret; | |
7951 | ||
7952 | if (sym_sec != toc) | |
7953 | continue; | |
7954 | ||
7955 | if (h != NULL) | |
7956 | val = h->root.u.def.value; | |
7957 | else | |
7958 | val = sym->st_value; | |
7959 | val += rel->r_addend; | |
7960 | ||
7961 | if (val >= toc->size) | |
7962 | continue; | |
7963 | ||
7964 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7965 | If not, don't mark as unused. */ | |
7966 | if (val & 7) | |
7967 | continue; | |
7968 | ||
7969 | if (skip == NULL) | |
7970 | { | |
7971 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7972 | if (skip == NULL) | |
7973 | goto error_ret; | |
7974 | } | |
7975 | ||
7976 | skip[val >> 3] = 1; | |
7977 | } | |
7978 | ||
7979 | if (elf_section_data (sec)->relocs != relstart) | |
7980 | free (relstart); | |
7981 | } | |
7982 | ||
7983 | if (skip == NULL) | |
7984 | continue; | |
7985 | ||
7986 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7987 | if (used == NULL) | |
7988 | { | |
7989 | error_ret: | |
7990 | if (local_syms != NULL | |
7991 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7992 | free (local_syms); | |
7993 | if (sec != NULL | |
7994 | && relstart != NULL | |
7995 | && elf_section_data (sec)->relocs != relstart) | |
7996 | free (relstart); | |
7997 | if (skip != NULL) | |
7998 | free (skip); | |
7999 | return FALSE; | |
8000 | } | |
8001 | ||
30038c59 AM |
8002 | /* Now check all kept sections that might reference the toc. |
8003 | Check the toc itself last. */ | |
8004 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8005 | : ibfd->sections); | |
c5614fa4 | 8006 | sec != NULL; |
c5614fa4 | 8007 | sec = (sec == toc ? NULL |
c5614fa4 | 8008 | : sec->next == NULL ? toc |
30038c59 | 8009 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8010 | : sec->next)) |
8011 | { | |
8012 | int repeat; | |
8013 | ||
8014 | if (sec->reloc_count == 0 | |
8015 | || elf_discarded_section (sec) | |
8016 | || get_opd_info (sec) | |
8017 | || (sec->flags & SEC_ALLOC) == 0 | |
8018 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8019 | continue; | |
8020 | ||
8021 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
8022 | if (relstart == NULL) | |
8023 | goto error_ret; | |
8024 | ||
8025 | /* Mark toc entries referenced as used. */ | |
8026 | repeat = 0; | |
8027 | do | |
8028 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8029 | { | |
8030 | enum elf_ppc64_reloc_type r_type; | |
8031 | unsigned long r_symndx; | |
8032 | asection *sym_sec; | |
8033 | struct elf_link_hash_entry *h; | |
8034 | Elf_Internal_Sym *sym; | |
8035 | bfd_vma val; | |
8036 | ||
8037 | r_type = ELF64_R_TYPE (rel->r_info); | |
8038 | switch (r_type) | |
8039 | { | |
8040 | case R_PPC64_TOC16: | |
8041 | case R_PPC64_TOC16_LO: | |
8042 | case R_PPC64_TOC16_HI: | |
8043 | case R_PPC64_TOC16_HA: | |
8044 | case R_PPC64_TOC16_DS: | |
8045 | case R_PPC64_TOC16_LO_DS: | |
8046 | /* In case we're taking addresses of toc entries. */ | |
8047 | case R_PPC64_ADDR64: | |
8048 | break; | |
8049 | ||
8050 | default: | |
8051 | continue; | |
8052 | } | |
8053 | ||
8054 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8055 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8056 | r_symndx, ibfd)) | |
8057 | { | |
8058 | free (used); | |
8059 | goto error_ret; | |
8060 | } | |
8061 | ||
8062 | if (sym_sec != toc) | |
8063 | continue; | |
8064 | ||
8065 | if (h != NULL) | |
8066 | val = h->root.u.def.value; | |
8067 | else | |
8068 | val = sym->st_value; | |
8069 | val += rel->r_addend; | |
8070 | ||
8071 | if (val >= toc->size) | |
8072 | continue; | |
8073 | ||
8074 | /* For the toc section, we only mark as used if | |
8075 | this entry itself isn't unused. */ | |
8076 | if (sec == toc | |
8077 | && !used[val >> 3] | |
8078 | && (used[rel->r_offset >> 3] | |
8079 | || !skip[rel->r_offset >> 3])) | |
8080 | /* Do all the relocs again, to catch reference | |
8081 | chains. */ | |
8082 | repeat = 1; | |
8083 | ||
8084 | used[val >> 3] = 1; | |
8085 | } | |
8086 | while (repeat); | |
8087 | } | |
8088 | ||
8089 | /* Merge the used and skip arrays. Assume that TOC | |
8090 | doublewords not appearing as either used or unused belong | |
8091 | to to an entry more than one doubleword in size. */ | |
8092 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8093 | drop < skip + (toc->size + 7) / 8; | |
8094 | ++drop, ++keep) | |
8095 | { | |
8096 | if (*keep) | |
8097 | { | |
8098 | *drop = 0; | |
8099 | last = 0; | |
8100 | } | |
8101 | else if (*drop) | |
8102 | { | |
8103 | some_unused = 1; | |
8104 | last = 1; | |
8105 | } | |
8106 | else | |
8107 | *drop = last; | |
8108 | } | |
8109 | ||
8110 | free (used); | |
8111 | ||
8112 | if (some_unused) | |
8113 | { | |
8114 | bfd_byte *contents, *src; | |
8115 | unsigned long off; | |
8116 | ||
8117 | /* Shuffle the toc contents, and at the same time convert the | |
8118 | skip array from booleans into offsets. */ | |
8119 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8120 | goto error_ret; | |
8121 | ||
8122 | elf_section_data (toc)->this_hdr.contents = contents; | |
8123 | ||
8124 | for (src = contents, off = 0, drop = skip; | |
8125 | src < contents + toc->size; | |
8126 | src += 8, ++drop) | |
8127 | { | |
8128 | if (*drop) | |
8129 | { | |
8130 | *drop = (unsigned long) -1; | |
8131 | off += 8; | |
8132 | } | |
8133 | else if (off != 0) | |
8134 | { | |
8135 | *drop = off; | |
8136 | memcpy (src - off, src, 8); | |
8137 | } | |
8138 | } | |
8139 | toc->rawsize = toc->size; | |
8140 | toc->size = src - contents - off; | |
8141 | ||
92b7a70f AM |
8142 | if (toc->reloc_count != 0) |
8143 | { | |
8144 | Elf_Internal_Rela *wrel; | |
8145 | bfd_size_type sz; | |
c5614fa4 | 8146 | |
92b7a70f AM |
8147 | /* Read toc relocs. */ |
8148 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8149 | TRUE); | |
8150 | if (relstart == NULL) | |
8151 | goto error_ret; | |
8152 | ||
8153 | /* Remove unused toc relocs, and adjust those we keep. */ | |
8154 | wrel = relstart; | |
8155 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
8156 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
8157 | { | |
8158 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8159 | wrel->r_info = rel->r_info; | |
8160 | wrel->r_addend = rel->r_addend; | |
8161 | ++wrel; | |
8162 | } | |
8c1d1bb8 AM |
8163 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
8164 | &local_syms, NULL, NULL)) | |
8165 | goto error_ret; | |
35090471 | 8166 | |
92b7a70f AM |
8167 | toc->reloc_count = wrel - relstart; |
8168 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
8169 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
8170 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
8171 | } | |
c5614fa4 AM |
8172 | |
8173 | /* Adjust addends for relocs against the toc section sym. */ | |
8174 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8175 | { | |
8176 | if (sec->reloc_count == 0 | |
8177 | || elf_discarded_section (sec)) | |
8178 | continue; | |
8179 | ||
8180 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8181 | TRUE); | |
8182 | if (relstart == NULL) | |
8183 | goto error_ret; | |
8184 | ||
8185 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8186 | { | |
8187 | enum elf_ppc64_reloc_type r_type; | |
8188 | unsigned long r_symndx; | |
8189 | asection *sym_sec; | |
8190 | struct elf_link_hash_entry *h; | |
8191 | Elf_Internal_Sym *sym; | |
8192 | ||
8193 | r_type = ELF64_R_TYPE (rel->r_info); | |
8194 | switch (r_type) | |
8195 | { | |
8196 | default: | |
8197 | continue; | |
8198 | ||
8199 | case R_PPC64_TOC16: | |
8200 | case R_PPC64_TOC16_LO: | |
8201 | case R_PPC64_TOC16_HI: | |
8202 | case R_PPC64_TOC16_HA: | |
8203 | case R_PPC64_TOC16_DS: | |
8204 | case R_PPC64_TOC16_LO_DS: | |
8205 | case R_PPC64_ADDR64: | |
8206 | break; | |
8207 | } | |
8208 | ||
8209 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8210 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8211 | r_symndx, ibfd)) | |
8212 | goto error_ret; | |
8213 | ||
8214 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
8215 | continue; | |
8216 | ||
8217 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
8218 | } | |
8219 | } | |
8220 | ||
8221 | /* We shouldn't have local or global symbols defined in the TOC, | |
8222 | but handle them anyway. */ | |
8223 | if (local_syms != NULL) | |
8224 | { | |
8225 | Elf_Internal_Sym *sym; | |
8226 | ||
8227 | for (sym = local_syms; | |
8228 | sym < local_syms + symtab_hdr->sh_info; | |
8229 | ++sym) | |
cb33740c | 8230 | if (sym->st_value != 0 |
c5614fa4 AM |
8231 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
8232 | { | |
8233 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
8234 | sym->st_value -= skip[sym->st_value >> 3]; | |
8235 | else | |
8236 | { | |
8237 | (*_bfd_error_handler) | |
8238 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
8239 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
8240 | NULL)); | |
c5614fa4 AM |
8241 | sym->st_value = 0; |
8242 | sym->st_shndx = SHN_ABS; | |
8243 | } | |
8244 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8245 | } | |
8246 | } | |
8247 | ||
8248 | /* Finally, adjust any global syms defined in the toc. */ | |
8249 | if (toc_inf.global_toc_syms) | |
8250 | { | |
8251 | toc_inf.toc = toc; | |
8252 | toc_inf.skip = skip; | |
8253 | toc_inf.global_toc_syms = FALSE; | |
8254 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8255 | &toc_inf); | |
8256 | } | |
8257 | } | |
8258 | ||
8259 | if (local_syms != NULL | |
8260 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8261 | { | |
8262 | if (!info->keep_memory) | |
8263 | free (local_syms); | |
8264 | else | |
8265 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8266 | } | |
8267 | free (skip); | |
8268 | } | |
8269 | ||
8270 | return TRUE; | |
8271 | } | |
8272 | ||
927be08e AM |
8273 | /* Allocate space for one GOT entry. */ |
8274 | ||
8275 | static void | |
8276 | allocate_got (struct elf_link_hash_entry *h, | |
8277 | struct bfd_link_info *info, | |
8278 | struct got_entry *gent) | |
8279 | { | |
8280 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8281 | bfd_boolean dyn; | |
8282 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8283 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8284 | ? 16 : 8); | |
8285 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8286 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8287 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8288 | ||
8289 | gent->got.offset = got->size; | |
8290 | got->size += entsize; | |
8291 | ||
8292 | dyn = htab->elf.dynamic_sections_created; | |
8293 | if ((info->shared | |
8294 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8295 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8296 | || h->root.type != bfd_link_hash_undefweak)) | |
8297 | { | |
8298 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; | |
8299 | relgot->size += rentsize; | |
8300 | } | |
8301 | else if (h->type == STT_GNU_IFUNC) | |
8302 | { | |
8303 | asection *relgot = htab->reliplt; | |
8304 | relgot->size += rentsize; | |
8305 | htab->got_reli_size += rentsize; | |
8306 | } | |
8307 | } | |
8308 | ||
65f38f15 AM |
8309 | /* Allocate space in .plt, .got and associated reloc sections for |
8310 | dynamic relocs. */ | |
5bd4f169 | 8311 | |
b34976b6 | 8312 | static bfd_boolean |
4ce794b7 | 8313 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8314 | { |
65f38f15 AM |
8315 | struct bfd_link_info *info; |
8316 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8317 | asection *s; |
65f38f15 AM |
8318 | struct ppc_link_hash_entry *eh; |
8319 | struct ppc_dyn_relocs *p; | |
0b8bcf0d | 8320 | struct got_entry **pgent, *gent; |
5bd4f169 | 8321 | |
e92d460e | 8322 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8323 | return TRUE; |
5bd4f169 | 8324 | |
e92d460e AM |
8325 | if (h->root.type == bfd_link_hash_warning) |
8326 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8327 | ||
65f38f15 AM |
8328 | info = (struct bfd_link_info *) inf; |
8329 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8330 | if (htab == NULL) |
8331 | return FALSE; | |
5bd4f169 | 8332 | |
e054468f AM |
8333 | if ((htab->elf.dynamic_sections_created |
8334 | && h->dynindx != -1 | |
8335 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8336 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8337 | { |
411e1bfb AM |
8338 | struct plt_entry *pent; |
8339 | bfd_boolean doneone = FALSE; | |
8340 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8341 | if (pent->plt.refcount > 0) | |
8342 | { | |
25f23106 AM |
8343 | if (!htab->elf.dynamic_sections_created |
8344 | || h->dynindx == -1) | |
e054468f AM |
8345 | { |
8346 | s = htab->iplt; | |
8347 | pent->plt.offset = s->size; | |
8348 | s->size += PLT_ENTRY_SIZE; | |
8349 | s = htab->reliplt; | |
8350 | } | |
8351 | else | |
8352 | { | |
8353 | /* If this is the first .plt entry, make room for the special | |
8354 | first entry. */ | |
8355 | s = htab->plt; | |
8356 | if (s->size == 0) | |
8357 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8358 | ||
8359 | pent->plt.offset = s->size; | |
8360 | ||
8361 | /* Make room for this entry. */ | |
8362 | s->size += PLT_ENTRY_SIZE; | |
8363 | ||
8364 | /* Make room for the .glink code. */ | |
8365 | s = htab->glink; | |
8366 | if (s->size == 0) | |
8367 | s->size += GLINK_CALL_STUB_SIZE; | |
8368 | /* We need bigger stubs past index 32767. */ | |
8369 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8370 | s->size += 4; | |
8371 | s->size += 2*4; | |
8372 | ||
8373 | /* We also need to make an entry in the .rela.plt section. */ | |
8374 | s = htab->relplt; | |
8375 | } | |
eea6121a | 8376 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8377 | doneone = TRUE; |
8378 | } | |
8379 | else | |
8380 | pent->plt.offset = (bfd_vma) -1; | |
8381 | if (!doneone) | |
65f38f15 | 8382 | { |
411e1bfb | 8383 | h->plt.plist = NULL; |
f5385ebf | 8384 | h->needs_plt = 0; |
65f38f15 AM |
8385 | } |
8386 | } | |
8387 | else | |
8388 | { | |
411e1bfb | 8389 | h->plt.plist = NULL; |
f5385ebf | 8390 | h->needs_plt = 0; |
65f38f15 AM |
8391 | } |
8392 | ||
951fd09b AM |
8393 | eh = (struct ppc_link_hash_entry *) h; |
8394 | /* Run through the TLS GD got entries first if we're changing them | |
8395 | to TPREL. */ | |
e7b938ca | 8396 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
8397 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8398 | if (gent->got.refcount > 0 | |
8399 | && (gent->tls_type & TLS_GD) != 0) | |
8400 | { | |
8401 | /* This was a GD entry that has been converted to TPREL. If | |
8402 | there happens to be a TPREL entry we can use that one. */ | |
8403 | struct got_entry *ent; | |
8404 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8405 | if (ent->got.refcount > 0 | |
8406 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8407 | && ent->addend == gent->addend |
8408 | && ent->owner == gent->owner) | |
951fd09b AM |
8409 | { |
8410 | gent->got.refcount = 0; | |
8411 | break; | |
8412 | } | |
8413 | ||
8414 | /* If not, then we'll be using our own TPREL entry. */ | |
8415 | if (gent->got.refcount != 0) | |
8416 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8417 | } | |
8418 | ||
0b8bcf0d AM |
8419 | pgent = &h->got.glist; |
8420 | while ((gent = *pgent) != NULL) | |
411e1bfb AM |
8421 | if (gent->got.refcount > 0) |
8422 | { | |
8423 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
8424 | Undefined weak syms won't yet be marked as dynamic, |
8425 | nor will all TLS symbols. */ | |
411e1bfb | 8426 | if (h->dynindx == -1 |
b099ab9f | 8427 | && !h->forced_local |
25f23106 | 8428 | && h->type != STT_GNU_IFUNC |
b099ab9f | 8429 | && htab->elf.dynamic_sections_created) |
411e1bfb | 8430 | { |
c152c796 | 8431 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
8432 | return FALSE; |
8433 | } | |
65f38f15 | 8434 | |
d881513a | 8435 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 8436 | && !h->def_dynamic) |
411e1bfb | 8437 | { |
927be08e | 8438 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; |
0b8bcf0d | 8439 | *pgent = gent->next; |
951fd09b | 8440 | continue; |
411e1bfb | 8441 | } |
951fd09b | 8442 | |
0c8d6e5c | 8443 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 8444 | abort (); |
0ffa91dd | 8445 | |
927be08e | 8446 | allocate_got (h, info, gent); |
0b8bcf0d | 8447 | pgent = &gent->next; |
411e1bfb AM |
8448 | } |
8449 | else | |
0b8bcf0d | 8450 | *pgent = gent->next; |
65f38f15 | 8451 | |
b099ab9f | 8452 | if (eh->dyn_relocs == NULL |
25f23106 AM |
8453 | || (!htab->elf.dynamic_sections_created |
8454 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 8455 | return TRUE; |
65f38f15 AM |
8456 | |
8457 | /* In the shared -Bsymbolic case, discard space allocated for | |
8458 | dynamic pc-relative relocs against symbols which turn out to be | |
8459 | defined in regular objects. For the normal shared case, discard | |
8460 | space for relocs that have become local due to symbol visibility | |
8461 | changes. */ | |
8462 | ||
8463 | if (info->shared) | |
8464 | { | |
9c7a29a3 | 8465 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 8466 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
8467 | generated via assembly. We want calls to protected symbols to |
8468 | resolve directly to the function rather than going via the plt. | |
8469 | If people want function pointer comparisons to work as expected | |
8470 | then they should avoid writing weird assembly. */ | |
09695f56 | 8471 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
8472 | { |
8473 | struct ppc_dyn_relocs **pp; | |
8474 | ||
8475 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 8476 | { |
65f38f15 AM |
8477 | p->count -= p->pc_count; |
8478 | p->pc_count = 0; | |
8479 | if (p->count == 0) | |
8480 | *pp = p->next; | |
8481 | else | |
8482 | pp = &p->next; | |
5bd4f169 | 8483 | } |
65f38f15 | 8484 | } |
4e795f50 AM |
8485 | |
8486 | /* Also discard relocs on undefined weak syms with non-default | |
8487 | visibility. */ | |
cab87ef9 AM |
8488 | if (eh->dyn_relocs != NULL |
8489 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
8490 | { |
8491 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8492 | eh->dyn_relocs = NULL; | |
8493 | ||
8494 | /* Make sure this symbol is output as a dynamic symbol. | |
8495 | Undefined weak syms won't yet be marked as dynamic. */ | |
8496 | else if (h->dynindx == -1 | |
8497 | && !h->forced_local) | |
8498 | { | |
8499 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8500 | return FALSE; | |
8501 | } | |
8502 | } | |
65f38f15 | 8503 | } |
25f23106 AM |
8504 | else if (h->type == STT_GNU_IFUNC) |
8505 | { | |
8506 | if (!h->non_got_ref) | |
8507 | eh->dyn_relocs = NULL; | |
8508 | } | |
f4656909 | 8509 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8510 | { |
8511 | /* For the non-shared case, discard space for relocs against | |
8512 | symbols which turn out to need copy relocs or are not | |
8513 | dynamic. */ | |
8514 | ||
f5385ebf | 8515 | if (!h->non_got_ref |
f5385ebf | 8516 | && !h->def_regular) |
65f38f15 AM |
8517 | { |
8518 | /* Make sure this symbol is output as a dynamic symbol. | |
8519 | Undefined weak syms won't yet be marked as dynamic. */ | |
8520 | if (h->dynindx == -1 | |
f5385ebf | 8521 | && !h->forced_local) |
65f38f15 | 8522 | { |
c152c796 | 8523 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8524 | return FALSE; |
65f38f15 AM |
8525 | } |
8526 | ||
8527 | /* If that succeeded, we know we'll be keeping all the | |
8528 | relocs. */ | |
8529 | if (h->dynindx != -1) | |
8530 | goto keep; | |
8531 | } | |
8532 | ||
8533 | eh->dyn_relocs = NULL; | |
8534 | ||
ec338859 | 8535 | keep: ; |
65f38f15 AM |
8536 | } |
8537 | ||
8538 | /* Finally, allocate space. */ | |
8539 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8540 | { | |
8541 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8542 | if (!htab->elf.dynamic_sections_created) |
8543 | sreloc = htab->reliplt; | |
eea6121a | 8544 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8545 | } |
8546 | ||
b34976b6 | 8547 | return TRUE; |
65f38f15 AM |
8548 | } |
8549 | ||
8550 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8551 | ||
b34976b6 | 8552 | static bfd_boolean |
4ce794b7 | 8553 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8554 | { |
8555 | struct ppc_link_hash_entry *eh; | |
8556 | struct ppc_dyn_relocs *p; | |
8557 | ||
e92d460e AM |
8558 | if (h->root.type == bfd_link_hash_warning) |
8559 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8560 | ||
65f38f15 AM |
8561 | eh = (struct ppc_link_hash_entry *) h; |
8562 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8563 | { | |
8564 | asection *s = p->sec->output_section; | |
8565 | ||
8566 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8567 | { | |
4ce794b7 | 8568 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8569 | |
8570 | info->flags |= DF_TEXTREL; | |
8571 | ||
8572 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8573 | return FALSE; |
65f38f15 AM |
8574 | } |
8575 | } | |
b34976b6 | 8576 | return TRUE; |
65f38f15 AM |
8577 | } |
8578 | ||
8579 | /* Set the sizes of the dynamic sections. */ | |
8580 | ||
b34976b6 | 8581 | static bfd_boolean |
4ce794b7 AM |
8582 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8583 | struct bfd_link_info *info) | |
65f38f15 AM |
8584 | { |
8585 | struct ppc_link_hash_table *htab; | |
8586 | bfd *dynobj; | |
8587 | asection *s; | |
b34976b6 | 8588 | bfd_boolean relocs; |
65f38f15 AM |
8589 | bfd *ibfd; |
8590 | ||
8591 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8592 | if (htab == NULL) |
8593 | return FALSE; | |
8594 | ||
65f38f15 AM |
8595 | dynobj = htab->elf.dynobj; |
8596 | if (dynobj == NULL) | |
8597 | abort (); | |
8598 | ||
8599 | if (htab->elf.dynamic_sections_created) | |
8600 | { | |
8601 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8602 | if (info->executable) |
65f38f15 AM |
8603 | { |
8604 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8605 | if (s == NULL) | |
8606 | abort (); | |
eea6121a | 8607 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8608 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8609 | } | |
8610 | } | |
8611 | ||
8612 | /* Set up .got offsets for local syms, and space for local dynamic | |
8613 | relocs. */ | |
8614 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8615 | { | |
411e1bfb AM |
8616 | struct got_entry **lgot_ents; |
8617 | struct got_entry **end_lgot_ents; | |
e054468f AM |
8618 | struct plt_entry **local_plt; |
8619 | struct plt_entry **end_local_plt; | |
e7b938ca | 8620 | char *lgot_masks; |
65f38f15 AM |
8621 | bfd_size_type locsymcount; |
8622 | Elf_Internal_Shdr *symtab_hdr; | |
8623 | asection *srel; | |
8624 | ||
0c8d6e5c | 8625 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8626 | continue; |
8627 | ||
8628 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8629 | { | |
ec338859 | 8630 | struct ppc_dyn_relocs *p; |
65f38f15 | 8631 | |
6edfbbad | 8632 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8633 | { |
ec338859 AM |
8634 | if (!bfd_is_abs_section (p->sec) |
8635 | && bfd_is_abs_section (p->sec->output_section)) | |
8636 | { | |
8637 | /* Input section has been discarded, either because | |
8638 | it is a copy of a linkonce section or due to | |
8639 | linker script /DISCARD/, so we'll be discarding | |
8640 | the relocs too. */ | |
8641 | } | |
248866a8 | 8642 | else if (p->count != 0) |
ec338859 AM |
8643 | { |
8644 | srel = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8645 | if (!htab->elf.dynamic_sections_created) |
8646 | srel = htab->reliplt; | |
eea6121a | 8647 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8648 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8649 | info->flags |= DF_TEXTREL; | |
ec338859 | 8650 | } |
65f38f15 AM |
8651 | } |
8652 | } | |
8653 | ||
411e1bfb AM |
8654 | lgot_ents = elf_local_got_ents (ibfd); |
8655 | if (!lgot_ents) | |
65f38f15 AM |
8656 | continue; |
8657 | ||
0ffa91dd | 8658 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8659 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8660 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
8661 | local_plt = (struct plt_entry **) end_lgot_ents; |
8662 | end_local_plt = local_plt + locsymcount; | |
8663 | lgot_masks = (char *) end_local_plt; | |
e717da7e AM |
8664 | s = ppc64_elf_tdata (ibfd)->got; |
8665 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8666 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8667 | { |
0b8bcf0d | 8668 | struct got_entry **pent, *ent; |
411e1bfb | 8669 | |
0b8bcf0d AM |
8670 | pent = lgot_ents; |
8671 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
8672 | if (ent->got.refcount > 0) |
8673 | { | |
e7b938ca | 8674 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8675 | { |
927be08e | 8676 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 8677 | *pent = ent->next; |
411e1bfb AM |
8678 | } |
8679 | else | |
8680 | { | |
25f23106 | 8681 | unsigned int num = 1; |
eea6121a | 8682 | ent->got.offset = s->size; |
e7b938ca | 8683 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
25f23106 AM |
8684 | num = 2; |
8685 | s->size += num * 8; | |
8686 | if (info->shared) | |
8687 | srel->size += num * sizeof (Elf64_External_Rela); | |
8688 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
927be08e AM |
8689 | { |
8690 | htab->reliplt->size | |
8691 | += num * sizeof (Elf64_External_Rela); | |
8692 | htab->got_reli_size | |
8693 | += num * sizeof (Elf64_External_Rela); | |
8694 | } | |
0b8bcf0d | 8695 | pent = &ent->next; |
411e1bfb AM |
8696 | } |
8697 | } | |
8698 | else | |
0b8bcf0d | 8699 | *pent = ent->next; |
65f38f15 | 8700 | } |
e054468f AM |
8701 | |
8702 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
8703 | for (; local_plt < end_local_plt; ++local_plt) | |
8704 | { | |
8705 | struct plt_entry *ent; | |
8706 | ||
8707 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
8708 | if (ent->plt.refcount > 0) | |
8709 | { | |
91d6fa6a | 8710 | s = htab->iplt; |
e054468f AM |
8711 | ent->plt.offset = s->size; |
8712 | s->size += PLT_ENTRY_SIZE; | |
8713 | ||
25f23106 | 8714 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
8715 | } |
8716 | else | |
8717 | ent->plt.offset = (bfd_vma) -1; | |
8718 | } | |
65f38f15 AM |
8719 | } |
8720 | ||
8721 | /* Allocate global sym .plt and .got entries, and space for global | |
8722 | sym dynamic relocs. */ | |
4ce794b7 | 8723 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8724 | |
102890f0 AM |
8725 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8726 | { | |
0c8d6e5c | 8727 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8728 | continue; |
8729 | ||
927be08e | 8730 | if (ppc64_tlsld_got (ibfd)->got.refcount > 0) |
102890f0 AM |
8731 | { |
8732 | s = ppc64_elf_tdata (ibfd)->got; | |
927be08e AM |
8733 | ppc64_tlsld_got (ibfd)->got.offset = s->size; |
8734 | ppc64_tlsld_got (ibfd)->owner = ibfd; | |
102890f0 AM |
8735 | s->size += 16; |
8736 | if (info->shared) | |
8737 | { | |
8738 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8739 | srel->size += sizeof (Elf64_External_Rela); | |
8740 | } | |
8741 | } | |
8742 | else | |
927be08e | 8743 | ppc64_tlsld_got (ibfd)->got.offset = (bfd_vma) -1; |
102890f0 AM |
8744 | } |
8745 | ||
65f38f15 AM |
8746 | /* We now have determined the sizes of the various dynamic sections. |
8747 | Allocate memory for them. */ | |
b34976b6 | 8748 | relocs = FALSE; |
65f38f15 AM |
8749 | for (s = dynobj->sections; s != NULL; s = s->next) |
8750 | { | |
8751 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8752 | continue; | |
8753 | ||
4ce794b7 | 8754 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8755 | /* These haven't been allocated yet; don't strip. */ |
8756 | continue; | |
e717da7e AM |
8757 | else if (s == htab->got |
8758 | || s == htab->plt | |
e054468f | 8759 | || s == htab->iplt |
c456f082 AM |
8760 | || s == htab->glink |
8761 | || s == htab->dynbss) | |
65f38f15 AM |
8762 | { |
8763 | /* Strip this section if we don't need it; see the | |
8764 | comment below. */ | |
5bd4f169 | 8765 | } |
0112cd26 | 8766 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8767 | { |
c456f082 | 8768 | if (s->size != 0) |
5bd4f169 | 8769 | { |
4ce794b7 | 8770 | if (s != htab->relplt) |
b34976b6 | 8771 | relocs = TRUE; |
5bd4f169 AM |
8772 | |
8773 | /* We use the reloc_count field as a counter if we need | |
8774 | to copy relocs into the output file. */ | |
8775 | s->reloc_count = 0; | |
8776 | } | |
8777 | } | |
65f38f15 | 8778 | else |
5bd4f169 AM |
8779 | { |
8780 | /* It's not one of our sections, so don't allocate space. */ | |
8781 | continue; | |
8782 | } | |
8783 | ||
eea6121a | 8784 | if (s->size == 0) |
5bd4f169 | 8785 | { |
c456f082 AM |
8786 | /* If we don't need this section, strip it from the |
8787 | output file. This is mostly to handle .rela.bss and | |
8788 | .rela.plt. We must create both sections in | |
8789 | create_dynamic_sections, because they must be created | |
8790 | before the linker maps input sections to output | |
8791 | sections. The linker does that before | |
8792 | adjust_dynamic_symbol is called, and it is that | |
8793 | function which decides whether anything needs to go | |
8794 | into these sections. */ | |
8423293d | 8795 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8796 | continue; |
8797 | } | |
8798 | ||
c456f082 | 8799 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8800 | continue; |
8801 | ||
65f38f15 AM |
8802 | /* Allocate memory for the section contents. We use bfd_zalloc |
8803 | here in case unused entries are not reclaimed before the | |
8804 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8805 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8806 | sections instead of garbage. | |
8807 | We also rely on the section contents being zero when writing | |
8808 | the GOT. */ | |
eea6121a | 8809 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8810 | if (s->contents == NULL) |
b34976b6 | 8811 | return FALSE; |
5bd4f169 AM |
8812 | } |
8813 | ||
e717da7e AM |
8814 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8815 | { | |
0c8d6e5c | 8816 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
8817 | continue; |
8818 | ||
e717da7e AM |
8819 | s = ppc64_elf_tdata (ibfd)->got; |
8820 | if (s != NULL && s != htab->got) | |
8821 | { | |
eea6121a | 8822 | if (s->size == 0) |
8423293d | 8823 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8824 | else |
8825 | { | |
eea6121a | 8826 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8827 | if (s->contents == NULL) |
8828 | return FALSE; | |
8829 | } | |
8830 | } | |
8831 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8832 | if (s != NULL) | |
8833 | { | |
eea6121a | 8834 | if (s->size == 0) |
8423293d | 8835 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8836 | else |
8837 | { | |
eea6121a | 8838 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8839 | if (s->contents == NULL) |
8840 | return FALSE; | |
8841 | relocs = TRUE; | |
8842 | s->reloc_count = 0; | |
8843 | } | |
8844 | } | |
8845 | } | |
8846 | ||
e86ce104 | 8847 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8848 | { |
8849 | /* Add some entries to the .dynamic section. We fill in the | |
8850 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8851 | must add the entries now so that we get the correct size for | |
8852 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8853 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8854 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8855 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8856 | |
36af4a4e | 8857 | if (info->executable) |
5bd4f169 | 8858 | { |
dc810e39 | 8859 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8860 | return FALSE; |
5bd4f169 AM |
8861 | } |
8862 | ||
eea6121a | 8863 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8864 | { |
dc810e39 AM |
8865 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8866 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8867 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8868 | || !add_dynamic_entry (DT_JMPREL, 0) |
8869 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8870 | return FALSE; |
5bd4f169 AM |
8871 | } |
8872 | ||
19397422 AM |
8873 | if (NO_OPD_RELOCS) |
8874 | { | |
8875 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8876 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8877 | return FALSE; |
19397422 AM |
8878 | } |
8879 | ||
a7f2871e AM |
8880 | if (!htab->no_tls_get_addr_opt |
8881 | && htab->tls_get_addr_fd != NULL | |
8882 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
8883 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
8884 | return FALSE; | |
8885 | ||
5bd4f169 AM |
8886 | if (relocs) |
8887 | { | |
dc810e39 AM |
8888 | if (!add_dynamic_entry (DT_RELA, 0) |
8889 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8890 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8891 | return FALSE; |
5bd4f169 | 8892 | |
65f38f15 AM |
8893 | /* If any dynamic relocs apply to a read-only section, |
8894 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8895 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8896 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8897 | |
65f38f15 | 8898 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8899 | { |
65f38f15 | 8900 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8901 | return FALSE; |
5bd4f169 | 8902 | } |
5bd4f169 | 8903 | } |
5bd4f169 | 8904 | } |
65f38f15 | 8905 | #undef add_dynamic_entry |
5bd4f169 | 8906 | |
b34976b6 | 8907 | return TRUE; |
5bd4f169 AM |
8908 | } |
8909 | ||
721956f4 | 8910 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8911 | |
4ce794b7 AM |
8912 | static inline enum ppc_stub_type |
8913 | ppc_type_of_stub (asection *input_sec, | |
8914 | const Elf_Internal_Rela *rel, | |
8915 | struct ppc_link_hash_entry **hash, | |
e054468f | 8916 | struct plt_entry **plt_ent, |
4ce794b7 | 8917 | bfd_vma destination) |
5bd4f169 | 8918 | { |
721956f4 AM |
8919 | struct ppc_link_hash_entry *h = *hash; |
8920 | bfd_vma location; | |
8921 | bfd_vma branch_offset; | |
8922 | bfd_vma max_branch_offset; | |
4ce794b7 | 8923 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8924 | |
721956f4 AM |
8925 | if (h != NULL) |
8926 | { | |
e054468f | 8927 | struct plt_entry *ent; |
7fe2b9a6 | 8928 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
8929 | if (h->oh != NULL |
8930 | && h->oh->is_func_descriptor) | |
8931 | fdh = ppc_follow_link (h->oh); | |
8387904d | 8932 | |
e054468f AM |
8933 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
8934 | if (ent->addend == rel->r_addend | |
8935 | && ent->plt.offset != (bfd_vma) -1) | |
8936 | { | |
8937 | *hash = fdh; | |
8938 | *plt_ent = ent; | |
8939 | return ppc_stub_plt_call; | |
8940 | } | |
5bd4f169 | 8941 | |
7fe2b9a6 AM |
8942 | /* Here, we know we don't have a plt entry. If we don't have a |
8943 | either a defined function descriptor or a defined entry symbol | |
8944 | in a regular object file, then it is pointless trying to make | |
8945 | any other type of stub. */ | |
8946 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8947 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8948 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8949 | && !((h->elf.root.type == bfd_link_hash_defined | |
8950 | || h->elf.root.type == bfd_link_hash_defweak) | |
8951 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8952 | return ppc_stub_none; |
5d1634d7 | 8953 | } |
e054468f AM |
8954 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
8955 | { | |
8956 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
8957 | struct plt_entry **local_plt = (struct plt_entry **) | |
8958 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
8959 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
8960 | ||
8961 | if (local_plt[r_symndx] != NULL) | |
8962 | { | |
8963 | struct plt_entry *ent; | |
8964 | ||
8965 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
8966 | if (ent->addend == rel->r_addend | |
8967 | && ent->plt.offset != (bfd_vma) -1) | |
8968 | { | |
8969 | *plt_ent = ent; | |
8970 | return ppc_stub_plt_call; | |
8971 | } | |
8972 | } | |
8973 | } | |
5d1634d7 | 8974 | |
721956f4 AM |
8975 | /* Determine where the call point is. */ |
8976 | location = (input_sec->output_offset | |
8977 | + input_sec->output_section->vma | |
8978 | + rel->r_offset); | |
5d1634d7 | 8979 | |
721956f4 AM |
8980 | branch_offset = destination - location; |
8981 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8982 | |
721956f4 AM |
8983 | /* Determine if a long branch stub is needed. */ |
8984 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8985 | if (r_type != R_PPC64_REL24) |
721956f4 | 8986 | max_branch_offset = 1 << 15; |
5d1634d7 | 8987 | |
721956f4 AM |
8988 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8989 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8990 | is needed later. */ | |
8991 | return ppc_stub_long_branch; | |
5d1634d7 | 8992 | |
721956f4 | 8993 | return ppc_stub_none; |
5d1634d7 AM |
8994 | } |
8995 | ||
8996 | /* Build a .plt call stub. */ | |
8997 | ||
4ce794b7 | 8998 | static inline bfd_byte * |
176a0d42 | 8999 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
9000 | { |
9001 | #define PPC_LO(v) ((v) & 0xffff) | |
9002 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9003 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9004 | ||
ac2df442 AM |
9005 | if (PPC_HA (offset) != 0) |
9006 | { | |
176a0d42 AM |
9007 | if (r != NULL) |
9008 | { | |
9009 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9010 | r[1].r_offset = r[0].r_offset + 8; | |
9011 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9012 | r[1].r_addend = r[0].r_addend; | |
9013 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9014 | { | |
9015 | r[2].r_offset = r[1].r_offset + 4; | |
9016 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9017 | r[2].r_addend = r[0].r_addend; | |
9018 | } | |
9019 | else | |
9020 | { | |
9021 | r[2].r_offset = r[1].r_offset + 8; | |
9022 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9023 | r[2].r_addend = r[0].r_addend + 8; | |
9024 | r[3].r_offset = r[2].r_offset + 4; | |
9025 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9026 | r[3].r_addend = r[0].r_addend + 16; | |
9027 | } | |
9028 | } | |
ac2df442 AM |
9029 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
9030 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
9031 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
9032 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9033 | { | |
9034 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
9035 | offset = 0; | |
9036 | } | |
9037 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9038 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
9039 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
9040 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
9041 | } | |
9042 | else | |
9043 | { | |
176a0d42 AM |
9044 | if (r != NULL) |
9045 | { | |
9046 | r[0].r_offset += 4; | |
9047 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9048 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9049 | { | |
9050 | r[1].r_offset = r[0].r_offset + 4; | |
9051 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9052 | r[1].r_addend = r[0].r_addend; | |
9053 | } | |
9054 | else | |
9055 | { | |
9056 | r[1].r_offset = r[0].r_offset + 8; | |
9057 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9058 | r[1].r_addend = r[0].r_addend + 16; | |
9059 | r[2].r_offset = r[1].r_offset + 4; | |
9060 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9061 | r[2].r_addend = r[0].r_addend + 8; | |
9062 | } | |
9063 | } | |
ac2df442 AM |
9064 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
9065 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
9066 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
9067 | { | |
9068 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9069 | offset = 0; | |
9070 | } | |
9071 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9072 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
9073 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
9074 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
9075 | } | |
5d1634d7 AM |
9076 | return p; |
9077 | } | |
9078 | ||
a7f2871e AM |
9079 | /* Build a special .plt call stub for __tls_get_addr. */ |
9080 | ||
9081 | #define LD_R11_0R3 0xe9630000 | |
9082 | #define LD_R12_0R3 0xe9830000 | |
9083 | #define MR_R0_R3 0x7c601b78 | |
9084 | #define CMPDI_R11_0 0x2c2b0000 | |
9085 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9086 | #define BEQLR 0x4d820020 | |
9087 | #define MR_R3_R0 0x7c030378 | |
9088 | #define MFLR_R11 0x7d6802a6 | |
9089 | #define STD_R11_0R1 0xf9610000 | |
9090 | #define BCTRL 0x4e800421 | |
9091 | #define LD_R11_0R1 0xe9610000 | |
9092 | #define LD_R2_0R1 0xe8410000 | |
9093 | #define MTLR_R11 0x7d6803a6 | |
9094 | ||
9095 | static inline bfd_byte * | |
9096 | build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset, | |
9097 | Elf_Internal_Rela *r) | |
9098 | { | |
9099 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; | |
9100 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9101 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9102 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9103 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9104 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9105 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9106 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
9107 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
9108 | ||
9109 | if (r != NULL) | |
9110 | r[0].r_offset += 9 * 4; | |
9111 | p = build_plt_stub (obfd, p, offset, r); | |
9112 | bfd_put_32 (obfd, BCTRL, p - 4); | |
9113 | ||
9114 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
9115 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
9116 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
9117 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9118 | ||
9119 | return p; | |
9120 | } | |
9121 | ||
176a0d42 AM |
9122 | static Elf_Internal_Rela * |
9123 | get_relocs (asection *sec, int count) | |
9124 | { | |
9125 | Elf_Internal_Rela *relocs; | |
9126 | struct bfd_elf_section_data *elfsec_data; | |
9127 | ||
9128 | elfsec_data = elf_section_data (sec); | |
9129 | relocs = elfsec_data->relocs; | |
9130 | if (relocs == NULL) | |
9131 | { | |
9132 | bfd_size_type relsize; | |
9133 | relsize = sec->reloc_count * sizeof (*relocs); | |
9134 | relocs = bfd_alloc (sec->owner, relsize); | |
9135 | if (relocs == NULL) | |
9136 | return NULL; | |
9137 | elfsec_data->relocs = relocs; | |
9138 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
9139 | * sizeof (Elf64_External_Rela)); | |
9140 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
9141 | sec->reloc_count = 0; | |
9142 | } | |
9143 | relocs += sec->reloc_count; | |
9144 | sec->reloc_count += count; | |
9145 | return relocs; | |
9146 | } | |
9147 | ||
b34976b6 | 9148 | static bfd_boolean |
4ce794b7 | 9149 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9150 | { |
721956f4 AM |
9151 | struct ppc_stub_hash_entry *stub_entry; |
9152 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9153 | struct bfd_link_info *info; |
9154 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9155 | bfd_byte *loc; |
9156 | bfd_byte *p; | |
ee75fd95 | 9157 | bfd_vma dest, off; |
721956f4 | 9158 | int size; |
176a0d42 | 9159 | Elf_Internal_Rela *r; |
e054468f | 9160 | asection *plt; |
5d1634d7 | 9161 | |
721956f4 AM |
9162 | /* Massage our args to the form they really have. */ |
9163 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 9164 | info = in_arg; |
5d1634d7 | 9165 | |
5d1634d7 | 9166 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
9167 | if (htab == NULL) |
9168 | return FALSE; | |
5d1634d7 | 9169 | |
721956f4 | 9170 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 9171 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 9172 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 9173 | |
4ce794b7 | 9174 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 9175 | switch (stub_entry->stub_type) |
5d1634d7 | 9176 | { |
721956f4 | 9177 | case ppc_stub_long_branch: |
ad8e1ba5 | 9178 | case ppc_stub_long_branch_r2off: |
721956f4 | 9179 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
9180 | off = dest = (stub_entry->target_value |
9181 | + stub_entry->target_section->output_offset | |
9182 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 9183 | |
721956f4 AM |
9184 | /* And this is where we are coming from. */ |
9185 | off -= (stub_entry->stub_offset | |
97b639ba AM |
9186 | + stub_entry->stub_sec->output_offset |
9187 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 9188 | |
ac2df442 AM |
9189 | size = 4; |
9190 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
9191 | { |
9192 | bfd_vma r2off; | |
9193 | ||
9194 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9195 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9196 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9197 | loc += 4; |
ac2df442 AM |
9198 | size = 12; |
9199 | if (PPC_HA (r2off) != 0) | |
9200 | { | |
9201 | size = 16; | |
9202 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9203 | loc += 4; | |
9204 | } | |
97b639ba | 9205 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 9206 | loc += 4; |
ac2df442 | 9207 | off -= size - 4; |
ad8e1ba5 | 9208 | } |
97b639ba | 9209 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 9210 | |
5c3dead3 AM |
9211 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9212 | { | |
9213 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
9214 | stub_entry->root.string); | |
9215 | htab->stub_error = TRUE; | |
9216 | return FALSE; | |
9217 | } | |
ee75fd95 AM |
9218 | |
9219 | if (info->emitrelocations) | |
9220 | { | |
176a0d42 AM |
9221 | r = get_relocs (stub_entry->stub_sec, 1); |
9222 | if (r == NULL) | |
9223 | return FALSE; | |
ee75fd95 AM |
9224 | r->r_offset = loc - stub_entry->stub_sec->contents; |
9225 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
9226 | r->r_addend = dest; | |
9227 | if (stub_entry->h != NULL) | |
9228 | { | |
9229 | struct elf_link_hash_entry **hashes; | |
9230 | unsigned long symndx; | |
9231 | struct ppc_link_hash_entry *h; | |
9232 | ||
9233 | hashes = elf_sym_hashes (htab->stub_bfd); | |
9234 | if (hashes == NULL) | |
9235 | { | |
9236 | bfd_size_type hsize; | |
9237 | ||
9238 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
9239 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
9240 | if (hashes == NULL) | |
9241 | return FALSE; | |
9242 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
9243 | htab->stub_globals = 1; | |
9244 | } | |
9245 | symndx = htab->stub_globals++; | |
9246 | h = stub_entry->h; | |
9247 | hashes[symndx] = &h->elf; | |
9248 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
9249 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 9250 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
9251 | if (h->elf.root.u.def.section != stub_entry->target_section) |
9252 | /* H is an opd symbol. The addend must be zero. */ | |
9253 | r->r_addend = 0; | |
9254 | else | |
9255 | { | |
9256 | off = (h->elf.root.u.def.value | |
9257 | + h->elf.root.u.def.section->output_offset | |
9258 | + h->elf.root.u.def.section->output_section->vma); | |
9259 | r->r_addend -= off; | |
9260 | } | |
9261 | } | |
9262 | } | |
721956f4 | 9263 | break; |
e86ce104 | 9264 | |
721956f4 | 9265 | case ppc_stub_plt_branch: |
ad8e1ba5 | 9266 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
9267 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
9268 | stub_entry->root.string + 9, | |
b34976b6 | 9269 | FALSE, FALSE); |
721956f4 AM |
9270 | if (br_entry == NULL) |
9271 | { | |
9272 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 9273 | stub_entry->root.string); |
b34976b6 AM |
9274 | htab->stub_error = TRUE; |
9275 | return FALSE; | |
721956f4 AM |
9276 | } |
9277 | ||
176a0d42 AM |
9278 | dest = (stub_entry->target_value |
9279 | + stub_entry->target_section->output_offset | |
9280 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 9281 | |
176a0d42 | 9282 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 9283 | htab->brlt->contents + br_entry->offset); |
721956f4 | 9284 | |
f94498ff | 9285 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 9286 | { |
f94498ff | 9287 | br_entry->iter = 0; |
84f5d08e | 9288 | |
f94498ff | 9289 | if (htab->relbrlt != NULL) |
84f5d08e | 9290 | { |
f94498ff AM |
9291 | /* Create a reloc for the branch lookup table entry. */ |
9292 | Elf_Internal_Rela rela; | |
9293 | bfd_byte *rl; | |
9294 | ||
9295 | rela.r_offset = (br_entry->offset | |
9296 | + htab->brlt->output_offset | |
9297 | + htab->brlt->output_section->vma); | |
9298 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9299 | rela.r_addend = dest; |
f94498ff AM |
9300 | |
9301 | rl = htab->relbrlt->contents; | |
9302 | rl += (htab->relbrlt->reloc_count++ | |
9303 | * sizeof (Elf64_External_Rela)); | |
9304 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
9305 | } | |
9306 | else if (info->emitrelocations) | |
9307 | { | |
176a0d42 AM |
9308 | r = get_relocs (htab->brlt, 1); |
9309 | if (r == NULL) | |
9310 | return FALSE; | |
9311 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
9312 | normal reloc processing. Symbols and offsets are not | |
9313 | translated from input file to output file form, so | |
9314 | set up the offset per the output file. */ | |
f94498ff AM |
9315 | r->r_offset = (br_entry->offset |
9316 | + htab->brlt->output_offset | |
9317 | + htab->brlt->output_section->vma); | |
9318 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9319 | r->r_addend = dest; |
84f5d08e | 9320 | } |
84f5d08e | 9321 | } |
721956f4 | 9322 | |
176a0d42 AM |
9323 | dest = (br_entry->offset |
9324 | + htab->brlt->output_offset | |
9325 | + htab->brlt->output_section->vma); | |
9326 | ||
9327 | off = (dest | |
4ce794b7 | 9328 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 9329 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9330 | |
ad8e1ba5 | 9331 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
9332 | { |
9333 | (*_bfd_error_handler) | |
e86ce104 | 9334 | (_("linkage table error against `%s'"), |
721956f4 | 9335 | stub_entry->root.string); |
5d1634d7 | 9336 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9337 | htab->stub_error = TRUE; |
9338 | return FALSE; | |
5d1634d7 | 9339 | } |
41bd81ab | 9340 | |
176a0d42 AM |
9341 | if (info->emitrelocations) |
9342 | { | |
9343 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
9344 | if (r == NULL) | |
9345 | return FALSE; | |
9346 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9347 | if (bfd_big_endian (info->output_bfd)) |
9348 | r[0].r_offset += 2; | |
176a0d42 AM |
9349 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
9350 | r[0].r_offset += 4; | |
9351 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9352 | r[0].r_addend = dest; | |
9353 | if (PPC_HA (off) != 0) | |
9354 | { | |
9355 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9356 | r[1].r_offset = r[0].r_offset + 4; | |
9357 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9358 | r[1].r_addend = r[0].r_addend; | |
9359 | } | |
9360 | } | |
9361 | ||
ad8e1ba5 AM |
9362 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9363 | { | |
176a0d42 | 9364 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9365 | { |
9366 | size = 16; | |
176a0d42 | 9367 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9368 | loc += 4; |
176a0d42 | 9369 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9370 | } |
9371 | else | |
9372 | { | |
9373 | size = 12; | |
176a0d42 | 9374 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 9375 | } |
ad8e1ba5 AM |
9376 | } |
9377 | else | |
9378 | { | |
9379 | bfd_vma r2off; | |
9380 | ||
9381 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
9382 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 9383 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9384 | loc += 4; |
ac2df442 | 9385 | size = 20; |
176a0d42 | 9386 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9387 | { |
9388 | size += 4; | |
176a0d42 | 9389 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9390 | loc += 4; |
176a0d42 | 9391 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9392 | loc += 4; |
9393 | } | |
9394 | else | |
9395 | { | |
176a0d42 | 9396 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
9397 | loc += 4; |
9398 | } | |
9399 | ||
9400 | if (PPC_HA (r2off) != 0) | |
9401 | { | |
9402 | size += 4; | |
9403 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9404 | loc += 4; | |
9405 | } | |
97b639ba | 9406 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
9407 | } |
9408 | loc += 4; | |
97b639ba | 9409 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 9410 | loc += 4; |
97b639ba | 9411 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 9412 | break; |
5d1634d7 | 9413 | |
721956f4 | 9414 | case ppc_stub_plt_call: |
e054468f | 9415 | if (stub_entry->h != NULL |
b31867b6 AM |
9416 | && stub_entry->h->is_func_descriptor |
9417 | && stub_entry->h->oh != NULL) | |
c862ae31 | 9418 | { |
b31867b6 AM |
9419 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
9420 | ||
9421 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
9422 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
9423 | FIXME: We used to define the symbol on one of the call | |
9424 | stubs instead, which is why we test symbol section id | |
9425 | against htab->top_id in various places. Likely all | |
9426 | these checks could now disappear. */ | |
9427 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
9428 | fh->elf.root.type = bfd_link_hash_undefweak; | |
c862ae31 AM |
9429 | } |
9430 | ||
721956f4 | 9431 | /* Now build the stub. */ |
e054468f | 9432 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 9433 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
9434 | abort (); |
9435 | ||
e054468f | 9436 | plt = htab->plt; |
25f23106 AM |
9437 | if (!htab->elf.dynamic_sections_created |
9438 | || stub_entry->h == NULL | |
9439 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9440 | plt = htab->iplt; |
9441 | ||
9442 | dest += plt->output_offset + plt->output_section->vma; | |
9443 | ||
9444 | if (stub_entry->h == NULL | |
9445 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
9446 | { | |
9447 | Elf_Internal_Rela rela; | |
9448 | bfd_byte *rl; | |
9449 | ||
9450 | rela.r_offset = dest; | |
25f23106 | 9451 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
9452 | rela.r_addend = (stub_entry->target_value |
9453 | + stub_entry->target_section->output_offset | |
9454 | + stub_entry->target_section->output_section->vma); | |
9455 | ||
25f23106 AM |
9456 | rl = (htab->reliplt->contents |
9457 | + (htab->reliplt->reloc_count++ | |
9458 | * sizeof (Elf64_External_Rela))); | |
9459 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
9460 | stub_entry->plt_ent->plt.offset |= 1; |
9461 | } | |
176a0d42 AM |
9462 | |
9463 | off = (dest | |
e054468f | 9464 | - elf_gp (plt->output_section->owner) |
176a0d42 | 9465 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9466 | |
ad8e1ba5 | 9467 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
9468 | { |
9469 | (*_bfd_error_handler) | |
9470 | (_("linkage table error against `%s'"), | |
e054468f AM |
9471 | stub_entry->h != NULL |
9472 | ? stub_entry->h->elf.root.root.string | |
9473 | : "<local sym>"); | |
721956f4 | 9474 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9475 | htab->stub_error = TRUE; |
9476 | return FALSE; | |
721956f4 AM |
9477 | } |
9478 | ||
176a0d42 AM |
9479 | r = NULL; |
9480 | if (info->emitrelocations) | |
9481 | { | |
9482 | r = get_relocs (stub_entry->stub_sec, | |
9483 | (2 + (PPC_HA (off) != 0) | |
9484 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
9485 | if (r == NULL) | |
9486 | return FALSE; | |
9487 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9488 | if (bfd_big_endian (info->output_bfd)) |
9489 | r[0].r_offset += 2; | |
176a0d42 AM |
9490 | r[0].r_addend = dest; |
9491 | } | |
a7f2871e AM |
9492 | if (stub_entry->h != NULL |
9493 | && (stub_entry->h == htab->tls_get_addr_fd | |
9494 | || stub_entry->h == htab->tls_get_addr) | |
9495 | && !htab->no_tls_get_addr_opt) | |
9496 | p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r); | |
9497 | else | |
9498 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
9499 | size = p - loc; |
9500 | break; | |
9501 | ||
9502 | default: | |
9503 | BFD_FAIL (); | |
b34976b6 | 9504 | return FALSE; |
721956f4 AM |
9505 | } |
9506 | ||
eea6121a | 9507 | stub_entry->stub_sec->size += size; |
97b639ba | 9508 | |
ee75fd95 | 9509 | if (htab->emit_stub_syms) |
97b639ba AM |
9510 | { |
9511 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
9512 | size_t len1, len2; |
9513 | char *name; | |
9514 | const char *const stub_str[] = { "long_branch", | |
9515 | "long_branch_r2off", | |
9516 | "plt_branch", | |
9517 | "plt_branch_r2off", | |
9518 | "plt_call" }; | |
9519 | ||
9520 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
9521 | len2 = strlen (stub_entry->root.string); | |
9522 | name = bfd_malloc (len1 + len2 + 2); | |
9523 | if (name == NULL) | |
9524 | return FALSE; | |
9525 | memcpy (name, stub_entry->root.string, 9); | |
9526 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
9527 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
9528 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
9529 | if (h == NULL) |
9530 | return FALSE; | |
9531 | if (h->root.type == bfd_link_hash_new) | |
9532 | { | |
9533 | h->root.type = bfd_link_hash_defined; | |
9534 | h->root.u.def.section = stub_entry->stub_sec; | |
9535 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
9536 | h->ref_regular = 1; |
9537 | h->def_regular = 1; | |
9538 | h->ref_regular_nonweak = 1; | |
9539 | h->forced_local = 1; | |
9540 | h->non_elf = 0; | |
97b639ba AM |
9541 | } |
9542 | } | |
9543 | ||
b34976b6 | 9544 | return TRUE; |
721956f4 AM |
9545 | } |
9546 | ||
9547 | /* As above, but don't actually build the stub. Just bump offset so | |
9548 | we know stub section sizes, and select plt_branch stubs where | |
9549 | long_branch stubs won't do. */ | |
9550 | ||
b34976b6 | 9551 | static bfd_boolean |
4ce794b7 | 9552 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
9553 | { |
9554 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 9555 | struct bfd_link_info *info; |
721956f4 AM |
9556 | struct ppc_link_hash_table *htab; |
9557 | bfd_vma off; | |
9558 | int size; | |
9559 | ||
9560 | /* Massage our args to the form they really have. */ | |
9561 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
9562 | info = in_arg; |
9563 | ||
9564 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9565 | if (htab == NULL) |
9566 | return FALSE; | |
721956f4 AM |
9567 | |
9568 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
9569 | { | |
e054468f AM |
9570 | asection *plt; |
9571 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 9572 | if (off >= (bfd_vma) -2) |
411e1bfb | 9573 | abort (); |
e054468f | 9574 | plt = htab->plt; |
25f23106 AM |
9575 | if (!htab->elf.dynamic_sections_created |
9576 | || stub_entry->h == NULL | |
9577 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9578 | plt = htab->iplt; |
9579 | off += (plt->output_offset | |
9580 | + plt->output_section->vma | |
9581 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 9582 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9583 | |
ad8e1ba5 | 9584 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
9585 | if (PPC_HA (off) == 0) |
9586 | size -= 4; | |
4ce794b7 | 9587 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 9588 | size += 4; |
a7f2871e AM |
9589 | if (stub_entry->h != NULL |
9590 | && (stub_entry->h == htab->tls_get_addr_fd | |
9591 | || stub_entry->h == htab->tls_get_addr) | |
9592 | && !htab->no_tls_get_addr_opt) | |
9593 | size += 13 * 4; | |
176a0d42 AM |
9594 | if (info->emitrelocations) |
9595 | { | |
9596 | stub_entry->stub_sec->reloc_count | |
9597 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
9598 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9599 | } | |
721956f4 AM |
9600 | } |
9601 | else | |
9602 | { | |
ad8e1ba5 AM |
9603 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
9604 | variants. */ | |
ac2df442 AM |
9605 | bfd_vma r2off = 0; |
9606 | ||
721956f4 AM |
9607 | off = (stub_entry->target_value |
9608 | + stub_entry->target_section->output_offset | |
9609 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 9610 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
9611 | + stub_entry->stub_sec->output_offset |
9612 | + stub_entry->stub_sec->output_section->vma); | |
9613 | ||
ad8e1ba5 AM |
9614 | /* Reset the stub type from the plt variant in case we now |
9615 | can reach with a shorter stub. */ | |
9616 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
9617 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
9618 | ||
9619 | size = 4; | |
9620 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
9621 | { | |
ac2df442 AM |
9622 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
9623 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9624 | size = 12; | |
9625 | if (PPC_HA (r2off) != 0) | |
9626 | size = 16; | |
9627 | off -= size - 4; | |
ad8e1ba5 AM |
9628 | } |
9629 | ||
9630 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
9631 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9632 | { | |
9633 | struct ppc_branch_hash_entry *br_entry; | |
9634 | ||
9635 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
9636 | stub_entry->root.string + 9, | |
b34976b6 | 9637 | TRUE, FALSE); |
721956f4 AM |
9638 | if (br_entry == NULL) |
9639 | { | |
9640 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 9641 | stub_entry->root.string); |
b34976b6 AM |
9642 | htab->stub_error = TRUE; |
9643 | return FALSE; | |
721956f4 AM |
9644 | } |
9645 | ||
9646 | if (br_entry->iter != htab->stub_iteration) | |
9647 | { | |
9648 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
9649 | br_entry->offset = htab->brlt->size; |
9650 | htab->brlt->size += 8; | |
63bc6f6c | 9651 | |
ee75fd95 | 9652 | if (htab->relbrlt != NULL) |
eea6121a | 9653 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
9654 | else if (info->emitrelocations) |
9655 | { | |
9656 | htab->brlt->reloc_count += 1; | |
9657 | htab->brlt->flags |= SEC_RELOC; | |
9658 | } | |
721956f4 | 9659 | } |
ad8e1ba5 AM |
9660 | |
9661 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9662 | off = (br_entry->offset |
9663 | + htab->brlt->output_offset | |
9664 | + htab->brlt->output_section->vma | |
9665 | - elf_gp (htab->brlt->output_section->owner) | |
9666 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9667 | ||
176a0d42 AM |
9668 | if (info->emitrelocations) |
9669 | { | |
9670 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9671 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9672 | } | |
9673 | ||
ac2df442 AM |
9674 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9675 | { | |
9676 | size = 12; | |
176a0d42 | 9677 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9678 | size = 16; |
9679 | } | |
9680 | else | |
9681 | { | |
9682 | size = 20; | |
176a0d42 | 9683 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9684 | size += 4; |
9685 | ||
9686 | if (PPC_HA (r2off) != 0) | |
9687 | size += 4; | |
9688 | } | |
721956f4 | 9689 | } |
84f5d08e AM |
9690 | else if (info->emitrelocations) |
9691 | { | |
9692 | stub_entry->stub_sec->reloc_count += 1; | |
9693 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9694 | } | |
721956f4 AM |
9695 | } |
9696 | ||
eea6121a | 9697 | stub_entry->stub_sec->size += size; |
b34976b6 | 9698 | return TRUE; |
721956f4 AM |
9699 | } |
9700 | ||
9701 | /* Set up various things so that we can make a list of input sections | |
9702 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9703 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9704 | |
9705 | int | |
927be08e AM |
9706 | ppc64_elf_setup_section_lists |
9707 | (struct bfd_link_info *info, | |
9708 | asection *(*add_stub_section) (const char *, asection *), | |
9709 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9710 | { |
9711 | bfd *input_bfd; | |
734b6cf9 | 9712 | int top_id, top_index, id; |
721956f4 | 9713 | asection *section; |
734b6cf9 | 9714 | asection **input_list; |
721956f4 AM |
9715 | bfd_size_type amt; |
9716 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9717 | ||
4dfe6ac6 NC |
9718 | if (htab == NULL) |
9719 | return -1; | |
927be08e AM |
9720 | /* Stash our params away. */ |
9721 | htab->add_stub_section = add_stub_section; | |
9722 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 9723 | |
4ce794b7 | 9724 | if (htab->brlt == NULL) |
721956f4 AM |
9725 | return 0; |
9726 | ||
1e2f5b6e | 9727 | /* Find the top input section id. */ |
3d6f9012 | 9728 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9729 | input_bfd != NULL; |
9730 | input_bfd = input_bfd->link_next) | |
9731 | { | |
721956f4 AM |
9732 | for (section = input_bfd->sections; |
9733 | section != NULL; | |
9734 | section = section->next) | |
9735 | { | |
9736 | if (top_id < section->id) | |
9737 | top_id = section->id; | |
9738 | } | |
9739 | } | |
721956f4 | 9740 | |
8f3bab57 | 9741 | htab->top_id = top_id; |
721956f4 | 9742 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9743 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9744 | if (htab->stub_group == NULL) |
9745 | return -1; | |
9746 | ||
3d6f9012 AM |
9747 | /* Set toc_off for com, und, abs and ind sections. */ |
9748 | for (id = 0; id < 3; id++) | |
9749 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9750 | |
734b6cf9 AM |
9751 | /* We can't use output_bfd->section_count here to find the top output |
9752 | section index as some sections may have been removed, and | |
8423293d | 9753 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 9754 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
9755 | section != NULL; |
9756 | section = section->next) | |
9757 | { | |
9758 | if (top_index < section->index) | |
9759 | top_index = section->index; | |
9760 | } | |
9761 | ||
9762 | htab->top_index = top_index; | |
9763 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 9764 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
9765 | htab->input_list = input_list; |
9766 | if (input_list == NULL) | |
9767 | return -1; | |
9768 | ||
721956f4 AM |
9769 | return 1; |
9770 | } | |
9771 | ||
927be08e AM |
9772 | /* Set up for first pass at multitoc partitioning. */ |
9773 | ||
9774 | void | |
9775 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
9776 | { | |
9777 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9778 | ||
9779 | elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd); | |
9780 | htab->toc_curr = elf_gp (info->output_bfd); | |
9781 | htab->toc_bfd = NULL; | |
9782 | htab->toc_first_sec = NULL; | |
9783 | } | |
9784 | ||
e717da7e AM |
9785 | /* The linker repeatedly calls this function for each TOC input section |
9786 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 9787 | within a group is less than 64k in size. */ |
ad8e1ba5 | 9788 | |
927be08e | 9789 | bfd_boolean |
4ce794b7 | 9790 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
9791 | { |
9792 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e | 9793 | bfd_vma addr, off; |
ad8e1ba5 | 9794 | |
4dfe6ac6 NC |
9795 | if (htab == NULL) |
9796 | return FALSE; | |
9797 | ||
927be08e | 9798 | if (!htab->second_toc_pass) |
4c52953f | 9799 | { |
927be08e | 9800 | /* Keep track of the first .toc or .got section for this input bfd. */ |
bf102f86 AM |
9801 | if (htab->toc_bfd != isec->owner) |
9802 | { | |
9803 | htab->toc_bfd = isec->owner; | |
9804 | htab->toc_first_sec = isec; | |
9805 | } | |
927be08e | 9806 | |
bf102f86 AM |
9807 | addr = isec->output_offset + isec->output_section->vma; |
9808 | off = addr - htab->toc_curr; | |
4c52953f | 9809 | if (off + isec->size > 0x10000) |
bf102f86 AM |
9810 | { |
9811 | addr = (htab->toc_first_sec->output_offset | |
9812 | + htab->toc_first_sec->output_section->vma); | |
9813 | htab->toc_curr = addr; | |
9814 | } | |
99877b66 | 9815 | |
927be08e AM |
9816 | /* toc_curr is the base address of this toc group. Set elf_gp |
9817 | for the input section to be the offset relative to the | |
9818 | output toc base plus 0x8000. Making the input elf_gp an | |
9819 | offset allows us to move the toc as a whole without | |
9820 | recalculating input elf_gp. */ | |
9821 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
9822 | off += TOC_BASE_OFF; | |
9823 | ||
9824 | /* Die if someone uses a linker script that doesn't keep input | |
9825 | file .toc and .got together. */ | |
9826 | if (elf_gp (isec->owner) != 0 | |
9827 | && elf_gp (isec->owner) != off) | |
9828 | return FALSE; | |
9829 | ||
9830 | elf_gp (isec->owner) = off; | |
9831 | return TRUE; | |
4c52953f | 9832 | } |
927be08e AM |
9833 | |
9834 | /* During the second pass toc_first_sec points to the start of | |
9835 | a toc group, and toc_curr is used to track the old elf_gp. | |
9836 | We use toc_bfd to ensure we only look at each bfd once. */ | |
9837 | if (htab->toc_bfd == isec->owner) | |
9838 | return TRUE; | |
9839 | htab->toc_bfd = isec->owner; | |
9840 | ||
9841 | if (htab->toc_first_sec == NULL | |
9842 | || htab->toc_curr != elf_gp (isec->owner)) | |
9843 | { | |
9844 | htab->toc_curr = elf_gp (isec->owner); | |
9845 | htab->toc_first_sec = isec; | |
9846 | } | |
9847 | addr = (htab->toc_first_sec->output_offset | |
9848 | + htab->toc_first_sec->output_section->vma); | |
9849 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
9850 | elf_gp (isec->owner) = off; | |
9851 | ||
9852 | return TRUE; | |
ad8e1ba5 AM |
9853 | } |
9854 | ||
0b8bcf0d | 9855 | /* This function merges got entries in the same toc group. */ |
ad8e1ba5 | 9856 | |
927be08e AM |
9857 | static void |
9858 | merge_got_entries (struct got_entry **pent) | |
9859 | { | |
9860 | struct got_entry *ent, *ent2; | |
9861 | ||
0b8bcf0d AM |
9862 | for (ent = *pent; ent != NULL; ent = ent->next) |
9863 | if (!ent->is_indirect) | |
9864 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9865 | if (!ent2->is_indirect | |
9866 | && ent2->addend == ent->addend | |
9867 | && ent2->tls_type == ent->tls_type | |
9868 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9869 | { | |
9870 | ent2->is_indirect = TRUE; | |
9871 | ent2->got.ent = ent; | |
9872 | } | |
927be08e AM |
9873 | } |
9874 | ||
9875 | /* Called via elf_link_hash_traverse to merge GOT entries for global | |
9876 | symbol H. */ | |
9877 | ||
9878 | static bfd_boolean | |
9879 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9880 | { | |
9881 | if (h->root.type == bfd_link_hash_indirect) | |
9882 | return TRUE; | |
9883 | ||
9884 | if (h->root.type == bfd_link_hash_warning) | |
9885 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9886 | ||
9887 | merge_got_entries (&h->got.glist); | |
9888 | ||
9889 | return TRUE; | |
9890 | } | |
9891 | ||
9892 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
9893 | symbol H. */ | |
9894 | ||
9895 | static bfd_boolean | |
9896 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
9897 | { | |
9898 | struct got_entry *gent; | |
9899 | ||
9900 | if (h->root.type == bfd_link_hash_indirect) | |
9901 | return TRUE; | |
9902 | ||
9903 | if (h->root.type == bfd_link_hash_warning) | |
9904 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9905 | ||
9906 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9907 | if (!gent->is_indirect) | |
9908 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
9909 | return TRUE; | |
9910 | } | |
9911 | ||
9912 | /* Called on the first multitoc pass after the last call to | |
9913 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
9914 | entries. */ | |
9915 | ||
9916 | bfd_boolean | |
9917 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
9918 | { |
9919 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9920 | struct bfd *ibfd, *ibfd2; |
9921 | bfd_boolean done_something; | |
9922 | ||
9923 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 9924 | |
927be08e AM |
9925 | /* Merge local got entries within a toc group. */ |
9926 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9927 | { | |
9928 | struct got_entry **lgot_ents; | |
9929 | struct got_entry **end_lgot_ents; | |
9930 | Elf_Internal_Shdr *symtab_hdr; | |
9931 | bfd_size_type locsymcount; | |
4c52953f | 9932 | |
927be08e AM |
9933 | if (!is_ppc64_elf (ibfd)) |
9934 | continue; | |
9935 | ||
9936 | lgot_ents = elf_local_got_ents (ibfd); | |
9937 | if (!lgot_ents) | |
9938 | continue; | |
9939 | ||
9940 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9941 | locsymcount = symtab_hdr->sh_info; | |
9942 | end_lgot_ents = lgot_ents + locsymcount; | |
9943 | ||
9944 | for (; lgot_ents < end_lgot_ents; ++lgot_ents) | |
9945 | merge_got_entries (lgot_ents); | |
9946 | } | |
9947 | ||
9948 | /* And the same for global sym got entries. */ | |
9949 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); | |
9950 | ||
9951 | /* And tlsld_got. */ | |
9952 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9953 | { | |
9954 | struct got_entry *ent, *ent2; | |
9955 | ||
9956 | if (!is_ppc64_elf (ibfd)) | |
9957 | continue; | |
9958 | ||
9959 | ent = ppc64_tlsld_got (ibfd); | |
9960 | if (!ent->is_indirect | |
9961 | && ent->got.offset != (bfd_vma) -1) | |
9962 | { | |
9963 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
9964 | { | |
9965 | if (!is_ppc64_elf (ibfd2)) | |
9966 | continue; | |
9967 | ||
9968 | ent2 = ppc64_tlsld_got (ibfd2); | |
9969 | if (!ent2->is_indirect | |
9970 | && ent2->got.offset != (bfd_vma) -1 | |
9971 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
9972 | { | |
9973 | ent2->is_indirect = TRUE; | |
9974 | ent2->got.ent = ent; | |
9975 | } | |
9976 | } | |
9977 | } | |
9978 | } | |
9979 | ||
9980 | /* Zap sizes of got sections. */ | |
9981 | htab->reliplt->rawsize = htab->reliplt->size; | |
9982 | htab->reliplt->size -= htab->got_reli_size; | |
9983 | htab->got_reli_size = 0; | |
9984 | ||
9985 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9986 | { | |
9987 | asection *got, *relgot; | |
9988 | ||
9989 | if (!is_ppc64_elf (ibfd)) | |
9990 | continue; | |
9991 | ||
9992 | got = ppc64_elf_tdata (ibfd)->got; | |
9993 | if (got != NULL) | |
9994 | { | |
9995 | got->rawsize = got->size; | |
9996 | got->size = 0; | |
9997 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
9998 | relgot->rawsize = relgot->size; | |
9999 | relgot->size = 0; | |
10000 | } | |
10001 | } | |
10002 | ||
10003 | /* Now reallocate the got, local syms first. We don't need to | |
10004 | allocate section contents again since we never increase size. */ | |
10005 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10006 | { | |
10007 | struct got_entry **lgot_ents; | |
10008 | struct got_entry **end_lgot_ents; | |
10009 | struct plt_entry **local_plt; | |
10010 | struct plt_entry **end_local_plt; | |
10011 | char *lgot_masks; | |
10012 | bfd_size_type locsymcount; | |
10013 | Elf_Internal_Shdr *symtab_hdr; | |
10014 | asection *s, *srel; | |
10015 | ||
10016 | if (!is_ppc64_elf (ibfd)) | |
10017 | continue; | |
10018 | ||
10019 | lgot_ents = elf_local_got_ents (ibfd); | |
10020 | if (!lgot_ents) | |
10021 | continue; | |
10022 | ||
10023 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10024 | locsymcount = symtab_hdr->sh_info; | |
10025 | end_lgot_ents = lgot_ents + locsymcount; | |
10026 | local_plt = (struct plt_entry **) end_lgot_ents; | |
10027 | end_local_plt = local_plt + locsymcount; | |
10028 | lgot_masks = (char *) end_local_plt; | |
10029 | s = ppc64_elf_tdata (ibfd)->got; | |
10030 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
10031 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) | |
10032 | { | |
10033 | struct got_entry *ent; | |
10034 | ||
10035 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
10036 | if (!ent->is_indirect) | |
10037 | { | |
10038 | unsigned int num = 1; | |
10039 | ent->got.offset = s->size; | |
10040 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
10041 | num = 2; | |
10042 | s->size += num * 8; | |
10043 | if (info->shared) | |
10044 | srel->size += num * sizeof (Elf64_External_Rela); | |
10045 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
10046 | { | |
10047 | htab->reliplt->size | |
10048 | += num * sizeof (Elf64_External_Rela); | |
10049 | htab->got_reli_size | |
10050 | += num * sizeof (Elf64_External_Rela); | |
10051 | } | |
10052 | } | |
10053 | } | |
10054 | } | |
10055 | ||
10056 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
10057 | ||
10058 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10059 | { | |
10060 | struct got_entry *ent; | |
10061 | ||
10062 | if (!is_ppc64_elf (ibfd)) | |
10063 | continue; | |
10064 | ||
10065 | ent = ppc64_tlsld_got (ibfd); | |
10066 | if (!ent->is_indirect | |
10067 | && ent->got.offset != (bfd_vma) -1) | |
10068 | { | |
10069 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
10070 | ent->got.offset = s->size; | |
10071 | s->size += 16; | |
10072 | if (info->shared) | |
10073 | { | |
10074 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10075 | srel->size += sizeof (Elf64_External_Rela); | |
10076 | } | |
10077 | } | |
10078 | } | |
10079 | ||
10080 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
10081 | if (!done_something) | |
10082 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10083 | { | |
10084 | asection *got; | |
10085 | ||
10086 | if (!is_ppc64_elf (ibfd)) | |
10087 | continue; | |
10088 | ||
10089 | got = ppc64_elf_tdata (ibfd)->got; | |
10090 | if (got != NULL) | |
10091 | { | |
10092 | done_something = got->rawsize != got->size; | |
10093 | if (done_something) | |
10094 | break; | |
10095 | } | |
10096 | } | |
10097 | ||
10098 | if (done_something) | |
10099 | (*htab->layout_sections_again) (); | |
10100 | ||
10101 | /* Set up for second pass over toc sections to recalculate elf_gp | |
10102 | on input sections. */ | |
10103 | htab->toc_bfd = NULL; | |
10104 | htab->toc_first_sec = NULL; | |
10105 | htab->second_toc_pass = TRUE; | |
10106 | return done_something; | |
10107 | } | |
10108 | ||
10109 | /* Called after second pass of multitoc partitioning. */ | |
10110 | ||
10111 | void | |
10112 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
10113 | { | |
10114 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10115 | ||
4dfe6ac6 NC |
10116 | if (htab == NULL) |
10117 | return; | |
10118 | ||
927be08e AM |
10119 | /* After the second pass, toc_curr tracks the TOC offset used |
10120 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 10121 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
10122 | } |
10123 | ||
9b5ecbd0 AM |
10124 | /* No toc references were found in ISEC. If the code in ISEC makes no |
10125 | calls, then there's no need to use toc adjusting stubs when branching | |
10126 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
10127 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
10128 | needed, and 2 if a cyclical call-graph was found but no other reason | |
10129 | for a stub was detected. If called from the top level, a return of | |
10130 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
10131 | |
10132 | static int | |
4ce794b7 | 10133 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 10134 | { |
4c52953f AM |
10135 | Elf_Internal_Rela *relstart, *rel; |
10136 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 10137 | int ret; |
4c52953f | 10138 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 10139 | |
772119ce AM |
10140 | /* We know none of our code bearing sections will need toc stubs. */ |
10141 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
10142 | return 0; | |
10143 | ||
eea6121a | 10144 | if (isec->size == 0) |
082c50f8 AM |
10145 | return 0; |
10146 | ||
4c52953f AM |
10147 | if (isec->output_section == NULL) |
10148 | return 0; | |
10149 | ||
4c52953f AM |
10150 | if (isec->reloc_count == 0) |
10151 | return 0; | |
10152 | ||
10153 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
10154 | info->keep_memory); | |
10155 | if (relstart == NULL) | |
10156 | return -1; | |
10157 | ||
10158 | /* Look for branches to outside of this section. */ | |
10159 | local_syms = NULL; | |
10160 | ret = 0; | |
10161 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10162 | if (htab == NULL) |
10163 | return -1; | |
10164 | ||
4c52953f | 10165 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
9b5ecbd0 | 10166 | { |
4c52953f AM |
10167 | enum elf_ppc64_reloc_type r_type; |
10168 | unsigned long r_symndx; | |
10169 | struct elf_link_hash_entry *h; | |
90aecf7a | 10170 | struct ppc_link_hash_entry *eh; |
4c52953f AM |
10171 | Elf_Internal_Sym *sym; |
10172 | asection *sym_sec; | |
74f0fb50 | 10173 | struct _opd_sec_data *opd; |
4c52953f AM |
10174 | bfd_vma sym_value; |
10175 | bfd_vma dest; | |
10176 | ||
10177 | r_type = ELF64_R_TYPE (rel->r_info); | |
10178 | if (r_type != R_PPC64_REL24 | |
10179 | && r_type != R_PPC64_REL14 | |
10180 | && r_type != R_PPC64_REL14_BRTAKEN | |
10181 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
10182 | continue; | |
10183 | ||
10184 | r_symndx = ELF64_R_SYM (rel->r_info); | |
10185 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
10186 | isec->owner)) | |
9b5ecbd0 | 10187 | { |
4c52953f AM |
10188 | ret = -1; |
10189 | break; | |
9b5ecbd0 | 10190 | } |
9b5ecbd0 | 10191 | |
2917689a | 10192 | /* Calls to dynamic lib functions go through a plt call stub |
90aecf7a AM |
10193 | that uses r2. */ |
10194 | eh = (struct ppc_link_hash_entry *) h; | |
10195 | if (eh != NULL | |
10196 | && (eh->elf.plt.plist != NULL | |
10197 | || (eh->oh != NULL | |
b31867b6 | 10198 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) |
2917689a | 10199 | { |
90aecf7a AM |
10200 | ret = 1; |
10201 | break; | |
2917689a AM |
10202 | } |
10203 | ||
90aecf7a AM |
10204 | if (sym_sec == NULL) |
10205 | /* Ignore other undefined symbols. */ | |
10206 | continue; | |
10207 | ||
2917689a AM |
10208 | /* Assume branches to other sections not included in the link need |
10209 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
10210 | if (sym_sec->output_section == NULL) |
10211 | { | |
10212 | ret = 1; | |
10213 | break; | |
10214 | } | |
10215 | ||
10216 | if (h == NULL) | |
10217 | sym_value = sym->st_value; | |
10218 | else | |
10219 | { | |
10220 | if (h->root.type != bfd_link_hash_defined | |
10221 | && h->root.type != bfd_link_hash_defweak) | |
10222 | abort (); | |
10223 | sym_value = h->root.u.def.value; | |
10224 | } | |
10225 | sym_value += rel->r_addend; | |
10226 | ||
10227 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
10228 | opd = get_opd_info (sym_sec); |
10229 | if (opd != NULL) | |
4c52953f | 10230 | { |
74f0fb50 | 10231 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
10232 | { |
10233 | long adjust; | |
10234 | ||
74f0fb50 | 10235 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
10236 | if (adjust == -1) |
10237 | /* Assume deleted functions won't ever be called. */ | |
10238 | continue; | |
10239 | sym_value += adjust; | |
10240 | } | |
10241 | ||
10242 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
10243 | if (dest == (bfd_vma) -1) | |
10244 | continue; | |
10245 | } | |
10246 | else | |
10247 | dest = (sym_value | |
10248 | + sym_sec->output_offset | |
10249 | + sym_sec->output_section->vma); | |
10250 | ||
10251 | /* Ignore branch to self. */ | |
10252 | if (sym_sec == isec) | |
10253 | continue; | |
10254 | ||
10255 | /* If the called function uses the toc, we need a stub. */ | |
10256 | if (sym_sec->has_toc_reloc | |
10257 | || sym_sec->makes_toc_func_call) | |
10258 | { | |
10259 | ret = 1; | |
10260 | break; | |
10261 | } | |
10262 | ||
10263 | /* Assume any branch that needs a long branch stub might in fact | |
10264 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
10265 | else if (dest - (isec->output_offset | |
10266 | + isec->output_section->vma | |
10267 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
10268 | { |
10269 | ret = 1; | |
10270 | break; | |
10271 | } | |
4c52953f AM |
10272 | |
10273 | /* If calling back to a section in the process of being tested, we | |
10274 | can't say for sure that no toc adjusting stubs are needed, so | |
10275 | don't return zero. */ | |
10276 | else if (sym_sec->call_check_in_progress) | |
10277 | ret = 2; | |
10278 | ||
10279 | /* Branches to another section that itself doesn't have any TOC | |
10280 | references are OK. Recursively call ourselves to check. */ | |
10281 | else if (sym_sec->id <= htab->top_id | |
10282 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
10283 | { | |
10284 | int recur; | |
10285 | ||
10286 | /* Mark current section as indeterminate, so that other | |
10287 | sections that call back to current won't be marked as | |
10288 | known. */ | |
10289 | isec->call_check_in_progress = 1; | |
10290 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
10291 | isec->call_check_in_progress = 0; | |
10292 | ||
10293 | if (recur < 0) | |
10294 | { | |
10295 | /* An error. Exit. */ | |
10296 | ret = -1; | |
10297 | break; | |
10298 | } | |
10299 | else if (recur <= 1) | |
10300 | { | |
10301 | /* Known result. Mark as checked and set section flag. */ | |
10302 | htab->stub_group[sym_sec->id].toc_off = 1; | |
10303 | if (recur != 0) | |
10304 | { | |
10305 | sym_sec->makes_toc_func_call = 1; | |
10306 | ret = 1; | |
10307 | break; | |
10308 | } | |
10309 | } | |
10310 | else | |
10311 | { | |
10312 | /* Unknown result. Continue checking. */ | |
10313 | ret = 2; | |
10314 | } | |
10315 | } | |
9b5ecbd0 AM |
10316 | } |
10317 | ||
4c52953f | 10318 | if (local_syms != NULL |
0ffa91dd | 10319 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
10320 | free (local_syms); |
10321 | if (elf_section_data (isec)->relocs != relstart) | |
10322 | free (relstart); | |
10323 | ||
9b5ecbd0 AM |
10324 | return ret; |
10325 | } | |
10326 | ||
721956f4 AM |
10327 | /* The linker repeatedly calls this function for each input section, |
10328 | in the order that input sections are linked into output sections. | |
10329 | Build lists of input sections to determine groupings between which | |
10330 | we may insert linker stubs. */ | |
10331 | ||
9b5ecbd0 | 10332 | bfd_boolean |
4ce794b7 | 10333 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
10334 | { |
10335 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10336 | ||
4dfe6ac6 NC |
10337 | if (htab == NULL) |
10338 | return FALSE; | |
10339 | ||
734b6cf9 AM |
10340 | if ((isec->output_section->flags & SEC_CODE) != 0 |
10341 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 10342 | { |
734b6cf9 | 10343 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 10344 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 10345 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
10346 | /* This happens to make the list in reverse order, |
10347 | which is what we want. */ | |
734b6cf9 AM |
10348 | PREV_SEC (isec) = *list; |
10349 | *list = isec; | |
721956f4 | 10350 | } |
ad8e1ba5 | 10351 | |
4c52953f | 10352 | if (htab->multi_toc_needed) |
9b5ecbd0 | 10353 | { |
4c52953f AM |
10354 | /* If a code section has a function that uses the TOC then we need |
10355 | to use the right TOC (obviously). Also, make sure that .opd gets | |
10356 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
10357 | can't find their function symbol (shouldn't ever happen now). |
10358 | Also specially treat .fixup for the linux kernel. .fixup | |
10359 | contains branches, but only back to the function that hit an | |
10360 | exception. */ | |
10361 | if (isec->has_toc_reloc | |
10362 | || (isec->flags & SEC_CODE) == 0 | |
10363 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
10364 | { |
10365 | if (elf_gp (isec->owner) != 0) | |
10366 | htab->toc_curr = elf_gp (isec->owner); | |
10367 | } | |
10368 | else if (htab->stub_group[isec->id].toc_off == 0) | |
10369 | { | |
10370 | int ret = toc_adjusting_stub_needed (info, isec); | |
10371 | if (ret < 0) | |
10372 | return FALSE; | |
10373 | else | |
10374 | isec->makes_toc_func_call = ret & 1; | |
10375 | } | |
9b5ecbd0 | 10376 | } |
ad8e1ba5 AM |
10377 | |
10378 | /* Functions that don't use the TOC can belong in any TOC group. | |
10379 | Use the last TOC base. This happens to make _init and _fini | |
10380 | pasting work. */ | |
10381 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 10382 | return TRUE; |
721956f4 AM |
10383 | } |
10384 | ||
10385 | /* See whether we can group stub sections together. Grouping stub | |
10386 | sections may result in fewer stubs. More importantly, we need to | |
10387 | put all .init* and .fini* stubs at the beginning of the .init or | |
10388 | .fini output sections respectively, because glibc splits the | |
10389 | _init and _fini functions into multiple parts. Putting a stub in | |
10390 | the middle of a function is not a good idea. */ | |
10391 | ||
10392 | static void | |
4ce794b7 AM |
10393 | group_sections (struct ppc_link_hash_table *htab, |
10394 | bfd_size_type stub_group_size, | |
10395 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 10396 | { |
7c8fe5c4 AM |
10397 | asection **list; |
10398 | bfd_size_type stub14_group_size; | |
10399 | bfd_boolean suppress_size_errors; | |
10400 | ||
10401 | suppress_size_errors = FALSE; | |
10402 | stub14_group_size = stub_group_size; | |
10403 | if (stub_group_size == 1) | |
10404 | { | |
10405 | /* Default values. */ | |
10406 | if (stubs_always_before_branch) | |
10407 | { | |
10408 | stub_group_size = 0x1e00000; | |
10409 | stub14_group_size = 0x7800; | |
10410 | } | |
10411 | else | |
10412 | { | |
10413 | stub_group_size = 0x1c00000; | |
10414 | stub14_group_size = 0x7000; | |
10415 | } | |
10416 | suppress_size_errors = TRUE; | |
10417 | } | |
10418 | ||
10419 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 10420 | do |
721956f4 | 10421 | { |
734b6cf9 AM |
10422 | asection *tail = *list; |
10423 | while (tail != NULL) | |
721956f4 | 10424 | { |
734b6cf9 AM |
10425 | asection *curr; |
10426 | asection *prev; | |
10427 | bfd_size_type total; | |
10428 | bfd_boolean big_sec; | |
10429 | bfd_vma curr_toc; | |
10430 | ||
10431 | curr = tail; | |
eea6121a | 10432 | total = tail->size; |
7c8fe5c4 AM |
10433 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
10434 | ? stub14_group_size : stub_group_size); | |
10435 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
10436 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
10437 | tail->owner, tail); | |
734b6cf9 AM |
10438 | curr_toc = htab->stub_group[tail->id].toc_off; |
10439 | ||
10440 | while ((prev = PREV_SEC (curr)) != NULL | |
10441 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
10442 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
10443 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 10444 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
10445 | curr = prev; |
10446 | ||
10447 | /* OK, the size from the start of CURR to the end is less | |
10448 | than stub_group_size and thus can be handled by one stub | |
10449 | section. (or the tail section is itself larger than | |
10450 | stub_group_size, in which case we may be toast.) We | |
10451 | should really be keeping track of the total size of stubs | |
10452 | added here, as stubs contribute to the final output | |
10453 | section size. That's a little tricky, and this way will | |
10454 | only break if stubs added make the total size more than | |
10455 | 2^25, ie. for the default stub_group_size, if stubs total | |
10456 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
10457 | do | |
721956f4 AM |
10458 | { |
10459 | prev = PREV_SEC (tail); | |
734b6cf9 | 10460 | /* Set up this stub group. */ |
721956f4 AM |
10461 | htab->stub_group[tail->id].link_sec = curr; |
10462 | } | |
734b6cf9 AM |
10463 | while (tail != curr && (tail = prev) != NULL); |
10464 | ||
10465 | /* But wait, there's more! Input sections up to stub_group_size | |
10466 | bytes before the stub section can be handled by it too. | |
10467 | Don't do this if we have a really large section after the | |
10468 | stubs, as adding more stubs increases the chance that | |
10469 | branches may not reach into the stub section. */ | |
10470 | if (!stubs_always_before_branch && !big_sec) | |
10471 | { | |
10472 | total = 0; | |
10473 | while (prev != NULL | |
10474 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
10475 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
10476 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
10477 | && htab->stub_group[prev->id].toc_off == curr_toc) |
10478 | { | |
10479 | tail = prev; | |
10480 | prev = PREV_SEC (tail); | |
10481 | htab->stub_group[tail->id].link_sec = curr; | |
10482 | } | |
10483 | } | |
10484 | tail = prev; | |
721956f4 AM |
10485 | } |
10486 | } | |
734b6cf9 AM |
10487 | while (list-- != htab->input_list); |
10488 | free (htab->input_list); | |
721956f4 AM |
10489 | #undef PREV_SEC |
10490 | } | |
10491 | ||
721956f4 AM |
10492 | /* Determine and set the size of the stub section for a final link. |
10493 | ||
10494 | The basic idea here is to examine all the relocations looking for | |
10495 | PC-relative calls to a target that is unreachable with a "bl" | |
10496 | instruction. */ | |
10497 | ||
b34976b6 | 10498 | bfd_boolean |
927be08e | 10499 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size) |
721956f4 AM |
10500 | { |
10501 | bfd_size_type stub_group_size; | |
b34976b6 | 10502 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
10503 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
10504 | ||
4dfe6ac6 NC |
10505 | if (htab == NULL) |
10506 | return FALSE; | |
10507 | ||
721956f4 AM |
10508 | stubs_always_before_branch = group_size < 0; |
10509 | if (group_size < 0) | |
10510 | stub_group_size = -group_size; | |
10511 | else | |
10512 | stub_group_size = group_size; | |
721956f4 AM |
10513 | |
10514 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
10515 | ||
721956f4 AM |
10516 | while (1) |
10517 | { | |
10518 | bfd *input_bfd; | |
10519 | unsigned int bfd_indx; | |
10520 | asection *stub_sec; | |
721956f4 AM |
10521 | |
10522 | htab->stub_iteration += 1; | |
721956f4 AM |
10523 | |
10524 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
10525 | input_bfd != NULL; | |
10526 | input_bfd = input_bfd->link_next, bfd_indx++) | |
10527 | { | |
10528 | Elf_Internal_Shdr *symtab_hdr; | |
10529 | asection *section; | |
6cdc0ccc | 10530 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 10531 | |
0c8d6e5c | 10532 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
10533 | continue; |
10534 | ||
721956f4 | 10535 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 10536 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
10537 | if (symtab_hdr->sh_info == 0) |
10538 | continue; | |
10539 | ||
721956f4 AM |
10540 | /* Walk over each section attached to the input bfd. */ |
10541 | for (section = input_bfd->sections; | |
10542 | section != NULL; | |
10543 | section = section->next) | |
10544 | { | |
721956f4 | 10545 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
10546 | |
10547 | /* If there aren't any relocs, then there's nothing more | |
10548 | to do. */ | |
10549 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
10550 | || (section->flags & SEC_ALLOC) == 0 |
10551 | || (section->flags & SEC_LOAD) == 0 | |
10552 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
10553 | || section->reloc_count == 0) |
10554 | continue; | |
10555 | ||
10556 | /* If this section is a link-once section that will be | |
10557 | discarded, then don't create any stubs. */ | |
10558 | if (section->output_section == NULL | |
927be08e | 10559 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
10560 | continue; |
10561 | ||
1e2f5b6e AM |
10562 | /* Get the relocs. */ |
10563 | internal_relocs | |
4ce794b7 | 10564 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 10565 | info->keep_memory); |
721956f4 | 10566 | if (internal_relocs == NULL) |
1e2f5b6e | 10567 | goto error_ret_free_local; |
721956f4 AM |
10568 | |
10569 | /* Now examine each relocation. */ | |
10570 | irela = internal_relocs; | |
10571 | irelaend = irela + section->reloc_count; | |
10572 | for (; irela < irelaend; irela++) | |
10573 | { | |
4ce794b7 AM |
10574 | enum elf_ppc64_reloc_type r_type; |
10575 | unsigned int r_indx; | |
721956f4 AM |
10576 | enum ppc_stub_type stub_type; |
10577 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 10578 | asection *sym_sec, *code_sec; |
e054468f | 10579 | bfd_vma sym_value, code_value; |
721956f4 | 10580 | bfd_vma destination; |
8843416a | 10581 | bfd_boolean ok_dest; |
721956f4 | 10582 | struct ppc_link_hash_entry *hash; |
8387904d | 10583 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
10584 | struct elf_link_hash_entry *h; |
10585 | Elf_Internal_Sym *sym; | |
721956f4 AM |
10586 | char *stub_name; |
10587 | const asection *id_sec; | |
74f0fb50 | 10588 | struct _opd_sec_data *opd; |
e054468f | 10589 | struct plt_entry *plt_ent; |
721956f4 AM |
10590 | |
10591 | r_type = ELF64_R_TYPE (irela->r_info); | |
10592 | r_indx = ELF64_R_SYM (irela->r_info); | |
10593 | ||
4ce794b7 | 10594 | if (r_type >= R_PPC64_max) |
721956f4 AM |
10595 | { |
10596 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 10597 | goto error_ret_free_internal; |
721956f4 AM |
10598 | } |
10599 | ||
10600 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
10601 | if (r_type != R_PPC64_REL24 |
10602 | && r_type != R_PPC64_REL14 | |
10603 | && r_type != R_PPC64_REL14_BRTAKEN | |
10604 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
10605 | continue; |
10606 | ||
10607 | /* Now determine the call target, its name, value, | |
10608 | section. */ | |
411e1bfb AM |
10609 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
10610 | r_indx, input_bfd)) | |
10611 | goto error_ret_free_internal; | |
10612 | hash = (struct ppc_link_hash_entry *) h; | |
10613 | ||
8843416a | 10614 | ok_dest = FALSE; |
8387904d | 10615 | fdh = NULL; |
7fe2b9a6 | 10616 | sym_value = 0; |
411e1bfb | 10617 | if (hash == NULL) |
721956f4 | 10618 | { |
411e1bfb | 10619 | sym_value = sym->st_value; |
8843416a | 10620 | ok_dest = TRUE; |
721956f4 | 10621 | } |
7fe2b9a6 AM |
10622 | else if (hash->elf.root.type == bfd_link_hash_defined |
10623 | || hash->elf.root.type == bfd_link_hash_defweak) | |
10624 | { | |
10625 | sym_value = hash->elf.root.u.def.value; | |
10626 | if (sym_sec->output_section != NULL) | |
10627 | ok_dest = TRUE; | |
10628 | } | |
10629 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
10630 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 10631 | { |
99877b66 | 10632 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
10633 | use the func descriptor sym instead if it is |
10634 | defined. */ | |
ceb1f1ef | 10635 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 10636 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 10637 | { |
8387904d AM |
10638 | if (fdh->elf.root.type == bfd_link_hash_defined |
10639 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
10640 | { | |
10641 | sym_sec = fdh->elf.root.u.def.section; | |
10642 | sym_value = fdh->elf.root.u.def.value; | |
10643 | if (sym_sec->output_section != NULL) | |
10644 | ok_dest = TRUE; | |
10645 | } | |
99877b66 AM |
10646 | else |
10647 | fdh = NULL; | |
8387904d | 10648 | } |
7fe2b9a6 AM |
10649 | } |
10650 | else | |
10651 | { | |
10652 | bfd_set_error (bfd_error_bad_value); | |
10653 | goto error_ret_free_internal; | |
721956f4 AM |
10654 | } |
10655 | ||
8843416a AM |
10656 | destination = 0; |
10657 | if (ok_dest) | |
10658 | { | |
10659 | sym_value += irela->r_addend; | |
10660 | destination = (sym_value | |
10661 | + sym_sec->output_offset | |
10662 | + sym_sec->output_section->vma); | |
10663 | } | |
10664 | ||
8387904d | 10665 | code_sec = sym_sec; |
e054468f | 10666 | code_value = sym_value; |
74f0fb50 AM |
10667 | opd = get_opd_info (sym_sec); |
10668 | if (opd != NULL) | |
8387904d AM |
10669 | { |
10670 | bfd_vma dest; | |
10671 | ||
74f0fb50 | 10672 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 10673 | { |
74f0fb50 | 10674 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
10675 | if (adjust == -1) |
10676 | continue; | |
e054468f | 10677 | code_value += adjust; |
8387904d AM |
10678 | sym_value += adjust; |
10679 | } | |
10680 | dest = opd_entry_value (sym_sec, sym_value, | |
e054468f | 10681 | &code_sec, &code_value); |
8387904d AM |
10682 | if (dest != (bfd_vma) -1) |
10683 | { | |
10684 | destination = dest; | |
10685 | if (fdh != NULL) | |
10686 | { | |
10687 | /* Fixup old ABI sym to point at code | |
10688 | entry. */ | |
99877b66 | 10689 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 10690 | hash->elf.root.u.def.section = code_sec; |
e054468f | 10691 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
10692 | } |
10693 | } | |
10694 | } | |
10695 | ||
721956f4 | 10696 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 10697 | plt_ent = NULL; |
721956f4 | 10698 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 10699 | &plt_ent, destination); |
ad8e1ba5 AM |
10700 | |
10701 | if (stub_type != ppc_stub_plt_call) | |
10702 | { | |
10703 | /* Check whether we need a TOC adjusting stub. | |
10704 | Since the linker pastes together pieces from | |
10705 | different object files when creating the | |
10706 | _init and _fini functions, it may be that a | |
10707 | call to what looks like a local sym is in | |
10708 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
10709 | if (code_sec != NULL |
10710 | && code_sec->output_section != NULL | |
10711 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 10712 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
10713 | && (code_sec->has_toc_reloc |
10714 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
10715 | stub_type = ppc_stub_long_branch_r2off; |
10716 | } | |
10717 | ||
721956f4 AM |
10718 | if (stub_type == ppc_stub_none) |
10719 | continue; | |
10720 | ||
411e1bfb AM |
10721 | /* __tls_get_addr calls might be eliminated. */ |
10722 | if (stub_type != ppc_stub_plt_call | |
10723 | && hash != NULL | |
8387904d AM |
10724 | && (hash == htab->tls_get_addr |
10725 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
10726 | && section->has_tls_reloc |
10727 | && irela != internal_relocs) | |
10728 | { | |
10729 | /* Get tls info. */ | |
e7b938ca | 10730 | char *tls_mask; |
411e1bfb | 10731 | |
3a71aa26 | 10732 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
10733 | irela - 1, input_bfd)) |
10734 | goto error_ret_free_internal; | |
e7b938ca | 10735 | if (*tls_mask != 0) |
411e1bfb AM |
10736 | continue; |
10737 | } | |
10738 | ||
721956f4 AM |
10739 | /* Support for grouping stub sections. */ |
10740 | id_sec = htab->stub_group[section->id].link_sec; | |
10741 | ||
10742 | /* Get the name of this stub. */ | |
10743 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
10744 | if (!stub_name) | |
10745 | goto error_ret_free_internal; | |
10746 | ||
10747 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 10748 | stub_name, FALSE, FALSE); |
721956f4 AM |
10749 | if (stub_entry != NULL) |
10750 | { | |
10751 | /* The proper stub has already been created. */ | |
10752 | free (stub_name); | |
10753 | continue; | |
10754 | } | |
10755 | ||
10756 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
10757 | if (stub_entry == NULL) | |
10758 | { | |
10759 | free (stub_name); | |
6cdc0ccc AM |
10760 | error_ret_free_internal: |
10761 | if (elf_section_data (section)->relocs == NULL) | |
10762 | free (internal_relocs); | |
10763 | error_ret_free_local: | |
10764 | if (local_syms != NULL | |
10765 | && (symtab_hdr->contents | |
10766 | != (unsigned char *) local_syms)) | |
10767 | free (local_syms); | |
b34976b6 | 10768 | return FALSE; |
721956f4 AM |
10769 | } |
10770 | ||
ad8e1ba5 | 10771 | stub_entry->stub_type = stub_type; |
e054468f AM |
10772 | if (stub_type != ppc_stub_plt_call) |
10773 | { | |
10774 | stub_entry->target_value = code_value; | |
10775 | stub_entry->target_section = code_sec; | |
10776 | } | |
10777 | else | |
10778 | { | |
10779 | stub_entry->target_value = sym_value; | |
10780 | stub_entry->target_section = sym_sec; | |
10781 | } | |
721956f4 | 10782 | stub_entry->h = hash; |
e054468f | 10783 | stub_entry->plt_ent = plt_ent; |
411e1bfb | 10784 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
10785 | |
10786 | if (stub_entry->h != NULL) | |
10787 | htab->stub_globals += 1; | |
721956f4 AM |
10788 | } |
10789 | ||
10790 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 10791 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 10792 | free (internal_relocs); |
721956f4 | 10793 | } |
6cdc0ccc AM |
10794 | |
10795 | if (local_syms != NULL | |
10796 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10797 | { | |
10798 | if (!info->keep_memory) | |
10799 | free (local_syms); | |
10800 | else | |
10801 | symtab_hdr->contents = (unsigned char *) local_syms; | |
10802 | } | |
721956f4 AM |
10803 | } |
10804 | ||
5c3dead3 | 10805 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
10806 | stub sections. */ |
10807 | for (stub_sec = htab->stub_bfd->sections; | |
10808 | stub_sec != NULL; | |
10809 | stub_sec = stub_sec->next) | |
e717da7e | 10810 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 10811 | { |
5c3dead3 | 10812 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
10813 | stub_sec->size = 0; |
10814 | stub_sec->reloc_count = 0; | |
84f5d08e | 10815 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 10816 | } |
eea6121a AM |
10817 | |
10818 | htab->brlt->size = 0; | |
84f5d08e AM |
10819 | htab->brlt->reloc_count = 0; |
10820 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 10821 | if (htab->relbrlt != NULL) |
eea6121a | 10822 | htab->relbrlt->size = 0; |
721956f4 | 10823 | |
63bc6f6c | 10824 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 10825 | |
176a0d42 AM |
10826 | if (info->emitrelocations |
10827 | && htab->glink != NULL && htab->glink->size != 0) | |
10828 | { | |
10829 | htab->glink->reloc_count = 1; | |
10830 | htab->glink->flags |= SEC_RELOC; | |
10831 | } | |
10832 | ||
5c3dead3 AM |
10833 | for (stub_sec = htab->stub_bfd->sections; |
10834 | stub_sec != NULL; | |
10835 | stub_sec = stub_sec->next) | |
10836 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
10837 | && stub_sec->rawsize != stub_sec->size) | |
10838 | break; | |
10839 | ||
10840 | /* Exit from this loop when no stubs have been added, and no stubs | |
10841 | have changed size. */ | |
10842 | if (stub_sec == NULL) | |
10843 | break; | |
10844 | ||
721956f4 AM |
10845 | /* Ask the linker to do its stuff. */ |
10846 | (*htab->layout_sections_again) (); | |
10847 | } | |
10848 | ||
c456f082 | 10849 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
10850 | section is empty, but it's too late. If we strip sections here, |
10851 | the dynamic symbol table is corrupted since the section symbol | |
10852 | for the stripped section isn't written. */ | |
721956f4 | 10853 | |
b34976b6 | 10854 | return TRUE; |
721956f4 AM |
10855 | } |
10856 | ||
10857 | /* Called after we have determined section placement. If sections | |
805fc799 | 10858 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 10859 | |
805fc799 | 10860 | bfd_vma |
4ce794b7 | 10861 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 10862 | { |
805fc799 AM |
10863 | asection *s; |
10864 | bfd_vma TOCstart; | |
721956f4 | 10865 | |
805fc799 AM |
10866 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
10867 | order. The TOC starts where the first of these sections starts. */ | |
10868 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 10869 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10870 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 10871 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10872 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 10873 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 10874 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 10875 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
10876 | { |
10877 | /* This may happen for | |
10878 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
10879 | .toc directive | |
10880 | o bad linker script | |
10881 | o --gc-sections and empty TOC sections | |
10882 | ||
10883 | FIXME: Warn user? */ | |
10884 | ||
10885 | /* Look for a likely section. We probably won't even be | |
10886 | using TOCstart. */ | |
10887 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
10888 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
10889 | | SEC_EXCLUDE)) | |
805fc799 AM |
10890 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10891 | break; | |
721956f4 | 10892 | if (s == NULL) |
805fc799 | 10893 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10894 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
10895 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
10896 | break; | |
721956f4 | 10897 | if (s == NULL) |
805fc799 | 10898 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
10899 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
10900 | == SEC_ALLOC) | |
805fc799 | 10901 | break; |
721956f4 | 10902 | if (s == NULL) |
805fc799 | 10903 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 10904 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
10905 | break; |
10906 | } | |
721956f4 | 10907 | |
805fc799 AM |
10908 | TOCstart = 0; |
10909 | if (s != NULL) | |
10910 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 10911 | |
805fc799 | 10912 | return TOCstart; |
721956f4 AM |
10913 | } |
10914 | ||
10915 | /* Build all the stubs associated with the current output file. | |
10916 | The stubs are kept in a hash table attached to the main linker | |
10917 | hash table. This function is called via gldelf64ppc_finish. */ | |
10918 | ||
b34976b6 | 10919 | bfd_boolean |
4ce794b7 AM |
10920 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
10921 | struct bfd_link_info *info, | |
10922 | char **stats) | |
5d1634d7 AM |
10923 | { |
10924 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 10925 | asection *stub_sec; |
5d1634d7 | 10926 | bfd_byte *p; |
e717da7e | 10927 | int stub_sec_count = 0; |
5d1634d7 | 10928 | |
4dfe6ac6 NC |
10929 | if (htab == NULL) |
10930 | return FALSE; | |
10931 | ||
ad8e1ba5 | 10932 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
10933 | |
10934 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
10935 | for (stub_sec = htab->stub_bfd->sections; |
10936 | stub_sec != NULL; | |
10937 | stub_sec = stub_sec->next) | |
eea6121a AM |
10938 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
10939 | && stub_sec->size != 0) | |
e717da7e | 10940 | { |
eea6121a AM |
10941 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
10942 | if (stub_sec->contents == NULL) | |
10943 | return FALSE; | |
10944 | /* We want to check that built size is the same as calculated | |
10945 | size. rawsize is a convenient location to use. */ | |
10946 | stub_sec->rawsize = stub_sec->size; | |
10947 | stub_sec->size = 0; | |
e717da7e | 10948 | } |
5d1634d7 | 10949 | |
23eb7e01 | 10950 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 10951 | { |
9f951329 | 10952 | unsigned int indx; |
ad8e1ba5 | 10953 | bfd_vma plt0; |
9f951329 | 10954 | |
721956f4 | 10955 | /* Build the .glink plt call stub. */ |
97b639ba AM |
10956 | if (htab->emit_stub_syms) |
10957 | { | |
10958 | struct elf_link_hash_entry *h; | |
468392fb AM |
10959 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
10960 | TRUE, FALSE, FALSE); | |
97b639ba AM |
10961 | if (h == NULL) |
10962 | return FALSE; | |
10963 | if (h->root.type == bfd_link_hash_new) | |
10964 | { | |
10965 | h->root.type = bfd_link_hash_defined; | |
10966 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 10967 | h->root.u.def.value = 8; |
f5385ebf AM |
10968 | h->ref_regular = 1; |
10969 | h->def_regular = 1; | |
10970 | h->ref_regular_nonweak = 1; | |
10971 | h->forced_local = 1; | |
10972 | h->non_elf = 0; | |
97b639ba AM |
10973 | } |
10974 | } | |
176a0d42 AM |
10975 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
10976 | if (info->emitrelocations) | |
10977 | { | |
10978 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
10979 | if (r == NULL) | |
10980 | return FALSE; | |
10981 | r->r_offset = (htab->glink->output_offset | |
10982 | + htab->glink->output_section->vma); | |
10983 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
10984 | r->r_addend = plt0; | |
10985 | } | |
4ce794b7 | 10986 | p = htab->glink->contents; |
176a0d42 | 10987 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
10988 | bfd_put_64 (htab->glink->owner, plt0, p); |
10989 | p += 8; | |
10990 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 10991 | p += 4; |
ee4bf8d2 | 10992 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 10993 | p += 4; |
ee4bf8d2 | 10994 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 10995 | p += 4; |
ee4bf8d2 | 10996 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 10997 | p += 4; |
ee4bf8d2 | 10998 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 10999 | p += 4; |
ee4bf8d2 | 11000 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 11001 | p += 4; |
ee4bf8d2 | 11002 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 11003 | p += 4; |
4ce794b7 | 11004 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 11005 | p += 4; |
4ce794b7 | 11006 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 11007 | p += 4; |
4ce794b7 | 11008 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 11009 | p += 4; |
4ce794b7 | 11010 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 11011 | p += 4; |
ee4bf8d2 AM |
11012 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
11013 | { | |
11014 | bfd_put_32 (htab->glink->owner, NOP, p); | |
11015 | p += 4; | |
11016 | } | |
ad8e1ba5 | 11017 | |
9f951329 AM |
11018 | /* Build the .glink lazy link call stubs. */ |
11019 | indx = 0; | |
eea6121a | 11020 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
11021 | { |
11022 | if (indx < 0x8000) | |
11023 | { | |
4ce794b7 | 11024 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
11025 | p += 4; |
11026 | } | |
11027 | else | |
11028 | { | |
4ce794b7 | 11029 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 11030 | p += 4; |
4ce794b7 | 11031 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
11032 | p += 4; |
11033 | } | |
4ce794b7 | 11034 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 11035 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 11036 | indx++; |
9f951329 AM |
11037 | p += 4; |
11038 | } | |
eea6121a | 11039 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 11040 | } |
5d1634d7 | 11041 | |
eea6121a | 11042 | if (htab->brlt->size != 0) |
721956f4 | 11043 | { |
4ce794b7 | 11044 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 11045 | htab->brlt->size); |
4ce794b7 | 11046 | if (htab->brlt->contents == NULL) |
b34976b6 | 11047 | return FALSE; |
721956f4 | 11048 | } |
ee75fd95 | 11049 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
11050 | { |
11051 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 11052 | htab->relbrlt->size); |
63bc6f6c AM |
11053 | if (htab->relbrlt->contents == NULL) |
11054 | return FALSE; | |
11055 | } | |
5d1634d7 | 11056 | |
721956f4 AM |
11057 | /* Build the stubs as directed by the stub hash table. */ |
11058 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 11059 | |
aa8a7074 AM |
11060 | if (htab->relbrlt != NULL) |
11061 | htab->relbrlt->reloc_count = 0; | |
11062 | ||
721956f4 AM |
11063 | for (stub_sec = htab->stub_bfd->sections; |
11064 | stub_sec != NULL; | |
11065 | stub_sec = stub_sec->next) | |
e717da7e AM |
11066 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
11067 | { | |
11068 | stub_sec_count += 1; | |
eea6121a | 11069 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
11070 | break; |
11071 | } | |
5d1634d7 | 11072 | |
721956f4 | 11073 | if (stub_sec != NULL |
eea6121a | 11074 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 11075 | { |
b34976b6 | 11076 | htab->stub_error = TRUE; |
721956f4 | 11077 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 11078 | } |
721956f4 | 11079 | |
d2a300cf AM |
11080 | if (htab->stub_error) |
11081 | return FALSE; | |
11082 | ||
11083 | if (stats != NULL) | |
11084 | { | |
11085 | *stats = bfd_malloc (500); | |
11086 | if (*stats == NULL) | |
11087 | return FALSE; | |
11088 | ||
ee75fd95 | 11089 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
11090 | " branch %lu\n" |
11091 | " toc adjust %lu\n" | |
11092 | " long branch %lu\n" | |
11093 | " long toc adj %lu\n" | |
11094 | " plt call %lu"), | |
e717da7e | 11095 | stub_sec_count, |
ee75fd95 | 11096 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
11097 | htab->stub_count[ppc_stub_long_branch - 1], |
11098 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
11099 | htab->stub_count[ppc_stub_plt_branch - 1], | |
11100 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
11101 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
11102 | } |
11103 | return TRUE; | |
5bd4f169 AM |
11104 | } |
11105 | ||
99877b66 AM |
11106 | /* This function undoes the changes made by add_symbol_adjust. */ |
11107 | ||
11108 | static bfd_boolean | |
11109 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11110 | { | |
11111 | struct ppc_link_hash_entry *eh; | |
11112 | ||
11113 | if (h->root.type == bfd_link_hash_indirect) | |
11114 | return TRUE; | |
11115 | ||
11116 | if (h->root.type == bfd_link_hash_warning) | |
11117 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
11118 | ||
11119 | eh = (struct ppc_link_hash_entry *) h; | |
11120 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
11121 | return TRUE; | |
11122 | ||
11123 | eh->elf.root.type = bfd_link_hash_undefined; | |
11124 | return TRUE; | |
11125 | } | |
11126 | ||
11127 | void | |
11128 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
11129 | { | |
11130 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11131 | |
11132 | if (htab != NULL) | |
11133 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
11134 | } |
11135 | ||
60124e18 AM |
11136 | /* What to do when ld finds relocations against symbols defined in |
11137 | discarded sections. */ | |
11138 | ||
11139 | static unsigned int | |
11140 | ppc64_elf_action_discarded (asection *sec) | |
11141 | { | |
11142 | if (strcmp (".opd", sec->name) == 0) | |
11143 | return 0; | |
11144 | ||
11145 | if (strcmp (".toc", sec->name) == 0) | |
11146 | return 0; | |
11147 | ||
bce50a28 JJ |
11148 | if (strcmp (".toc1", sec->name) == 0) |
11149 | return 0; | |
11150 | ||
60124e18 AM |
11151 | return _bfd_elf_default_action_discarded (sec); |
11152 | } | |
11153 | ||
5bd4f169 AM |
11154 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
11155 | to handle the relocations for a section. | |
11156 | ||
11157 | The relocs are always passed as Rela structures; if the section | |
11158 | actually uses Rel structures, the r_addend field will always be | |
11159 | zero. | |
11160 | ||
11161 | This function is responsible for adjust the section contents as | |
11162 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 11163 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
11164 | necessary. |
11165 | ||
11166 | This function does not have to worry about setting the reloc | |
11167 | address or the reloc symbol index. | |
11168 | ||
11169 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
11170 | ||
11171 | LOCAL_SECTIONS is an array giving the section in the input file | |
11172 | corresponding to the st_shndx field of each local symbol. | |
11173 | ||
11174 | The global hash table entry for the global symbols can be found | |
11175 | via elf_sym_hashes (input_bfd). | |
11176 | ||
1049f94e | 11177 | When generating relocatable output, this function must handle |
5bd4f169 AM |
11178 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
11179 | going to be the section symbol corresponding to the output | |
11180 | section, which means that the addend must be adjusted | |
11181 | accordingly. */ | |
11182 | ||
b34976b6 | 11183 | static bfd_boolean |
4ce794b7 AM |
11184 | ppc64_elf_relocate_section (bfd *output_bfd, |
11185 | struct bfd_link_info *info, | |
11186 | bfd *input_bfd, | |
11187 | asection *input_section, | |
11188 | bfd_byte *contents, | |
11189 | Elf_Internal_Rela *relocs, | |
11190 | Elf_Internal_Sym *local_syms, | |
11191 | asection **local_sections) | |
5bd4f169 | 11192 | { |
65f38f15 | 11193 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
11194 | Elf_Internal_Shdr *symtab_hdr; |
11195 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
11196 | Elf_Internal_Rela *rel; |
11197 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
11198 | Elf_Internal_Rela outrel; |
11199 | bfd_byte *loc; | |
411e1bfb | 11200 | struct got_entry **local_got_ents; |
5bd4f169 | 11201 | bfd_vma TOCstart; |
b34976b6 AM |
11202 | bfd_boolean ret = TRUE; |
11203 | bfd_boolean is_opd; | |
96e0dda4 | 11204 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 11205 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 11206 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 11207 | |
65f38f15 | 11208 | /* Initialize howto table if needed. */ |
5bd4f169 | 11209 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
11210 | ppc_howto_init (); |
11211 | ||
65f38f15 | 11212 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11213 | if (htab == NULL) |
11214 | return FALSE; | |
ee75fd95 AM |
11215 | |
11216 | /* Don't relocate stub sections. */ | |
11217 | if (input_section->owner == htab->stub_bfd) | |
11218 | return TRUE; | |
11219 | ||
0c8d6e5c | 11220 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 11221 | |
411e1bfb | 11222 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 11223 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 11224 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 11225 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 11226 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 11227 | |
5bd4f169 AM |
11228 | rel = relocs; |
11229 | relend = relocs + input_section->reloc_count; | |
11230 | for (; rel < relend; rel++) | |
11231 | { | |
04c9666a | 11232 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 11233 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
11234 | bfd_reloc_status_type r; |
11235 | Elf_Internal_Sym *sym; | |
11236 | asection *sec; | |
039b3fef AM |
11237 | struct elf_link_hash_entry *h_elf; |
11238 | struct ppc_link_hash_entry *h; | |
11239 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 11240 | const char *sym_name; |
0d4792f7 | 11241 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 11242 | bfd_vma toc_addend; |
951fd09b | 11243 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 11244 | char sym_type; |
5bd4f169 | 11245 | bfd_vma relocation; |
b34976b6 AM |
11246 | bfd_boolean unresolved_reloc; |
11247 | bfd_boolean warned; | |
50bc7936 | 11248 | unsigned long insn, mask; |
721956f4 AM |
11249 | struct ppc_stub_hash_entry *stub_entry; |
11250 | bfd_vma max_br_offset; | |
11251 | bfd_vma from; | |
5bd4f169 | 11252 | |
4ce794b7 | 11253 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 11254 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
11255 | |
11256 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
11257 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
11258 | proper TOC base to use. */ | |
11259 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
11260 | && rel != relocs | |
11261 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
11262 | && is_opd) | |
11263 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
11264 | ||
4ce794b7 AM |
11265 | sym = NULL; |
11266 | sec = NULL; | |
039b3fef | 11267 | h_elf = NULL; |
4ce794b7 | 11268 | sym_name = NULL; |
b34976b6 AM |
11269 | unresolved_reloc = FALSE; |
11270 | warned = FALSE; | |
4cc603a5 | 11271 | orig_addend = rel->r_addend; |
65f38f15 | 11272 | |
0b13192e | 11273 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
11274 | { |
11275 | /* It's a local symbol. */ | |
74f0fb50 | 11276 | struct _opd_sec_data *opd; |
4025353c | 11277 | |
5bd4f169 AM |
11278 | sym = local_syms + r_symndx; |
11279 | sec = local_sections[r_symndx]; | |
26c61ae5 | 11280 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 11281 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 11282 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
11283 | opd = get_opd_info (sec); |
11284 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 11285 | { |
74f0fb50 | 11286 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
11287 | if (adjust == -1) |
11288 | relocation = 0; | |
11289 | else | |
4cc603a5 AM |
11290 | { |
11291 | /* If this is a relocation against the opd section sym | |
11292 | and we have edited .opd, adjust the reloc addend so | |
11293 | that ld -r and ld --emit-relocs output is correct. | |
11294 | If it is a reloc against some other .opd symbol, | |
11295 | then the symbol value will be adjusted later. */ | |
11296 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
11297 | rel->r_addend += adjust; | |
11298 | else | |
11299 | relocation += adjust; | |
11300 | } | |
1e2f5b6e | 11301 | } |
5bd4f169 AM |
11302 | } |
11303 | else | |
11304 | { | |
b2a8e766 AM |
11305 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
11306 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 11307 | h_elf, sec, relocation, |
b2a8e766 | 11308 | unresolved_reloc, warned); |
039b3fef AM |
11309 | sym_name = h_elf->root.root.string; |
11310 | sym_type = h_elf->type; | |
5bd4f169 | 11311 | } |
039b3fef | 11312 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 11313 | |
ab96bf03 AM |
11314 | if (sec != NULL && elf_discarded_section (sec)) |
11315 | { | |
11316 | /* For relocs against symbols from removed linkonce sections, | |
11317 | or sections discarded by a linker script, we just want the | |
11318 | section contents zeroed. Avoid any special processing. */ | |
11319 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
11320 | contents + rel->r_offset); | |
11321 | rel->r_info = 0; | |
11322 | rel->r_addend = 0; | |
11323 | continue; | |
11324 | } | |
11325 | ||
11326 | if (info->relocatable) | |
11327 | continue; | |
11328 | ||
951fd09b AM |
11329 | /* TLS optimizations. Replace instruction sequences and relocs |
11330 | based on information we collected in tls_optimize. We edit | |
11331 | RELOCS so that --emit-relocs will output something sensible | |
11332 | for the final instruction stream. */ | |
11333 | tls_mask = 0; | |
11334 | tls_gd = 0; | |
0d4792f7 | 11335 | toc_symndx = 0; |
727fc41e AM |
11336 | if (h != NULL) |
11337 | tls_mask = h->tls_mask; | |
11338 | else if (local_got_ents != NULL) | |
411e1bfb | 11339 | { |
e054468f AM |
11340 | struct plt_entry **local_plt = (struct plt_entry **) |
11341 | (local_got_ents + symtab_hdr->sh_info); | |
11342 | char *lgot_masks = (char *) | |
11343 | (local_plt + symtab_hdr->sh_info); | |
727fc41e AM |
11344 | tls_mask = lgot_masks[r_symndx]; |
11345 | } | |
11346 | if (tls_mask == 0 | |
11347 | && (r_type == R_PPC64_TLS | |
11348 | || r_type == R_PPC64_TLSGD | |
11349 | || r_type == R_PPC64_TLSLD)) | |
11350 | { | |
11351 | /* Check for toc tls entries. */ | |
11352 | char *toc_tls; | |
0d4792f7 | 11353 | |
727fc41e AM |
11354 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
11355 | &local_syms, rel, input_bfd)) | |
11356 | return FALSE; | |
0d4792f7 | 11357 | |
727fc41e AM |
11358 | if (toc_tls) |
11359 | tls_mask = *toc_tls; | |
0d4792f7 AM |
11360 | } |
11361 | ||
11362 | /* Check that tls relocs are used with tls syms, and non-tls | |
11363 | relocs are used with non-tls syms. */ | |
11364 | if (r_symndx != 0 | |
11365 | && r_type != R_PPC64_NONE | |
11366 | && (h == NULL | |
039b3fef AM |
11367 | || h->elf.root.type == bfd_link_hash_defined |
11368 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
11369 | && (IS_PPC64_TLS_RELOC (r_type) |
11370 | != (sym_type == STT_TLS | |
11371 | || (sym_type == STT_SECTION | |
11372 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 11373 | { |
727fc41e AM |
11374 | if (tls_mask != 0 |
11375 | && (r_type == R_PPC64_TLS | |
11376 | || r_type == R_PPC64_TLSGD | |
11377 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
11378 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
11379 | ; | |
11380 | else | |
11381 | (*_bfd_error_handler) | |
1d483afe | 11382 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
11383 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
11384 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
11385 | input_bfd, | |
11386 | input_section, | |
0d4792f7 AM |
11387 | (long) rel->r_offset, |
11388 | ppc64_elf_howto_table[r_type]->name, | |
11389 | sym_name); | |
411e1bfb AM |
11390 | } |
11391 | ||
11392 | /* Ensure reloc mapping code below stays sane. */ | |
11393 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
11394 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
11395 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
11396 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
11397 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
11398 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
11399 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
11400 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
11401 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
11402 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
11403 | abort (); | |
0d4792f7 | 11404 | |
411e1bfb AM |
11405 | switch (r_type) |
11406 | { | |
11407 | default: | |
411e1bfb AM |
11408 | break; |
11409 | ||
11410 | case R_PPC64_TOC16: | |
11411 | case R_PPC64_TOC16_LO: | |
11412 | case R_PPC64_TOC16_DS: | |
11413 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
11414 | { |
11415 | /* Check for toc tls entries. */ | |
11416 | char *toc_tls; | |
951fd09b | 11417 | int retval; |
411e1bfb | 11418 | |
3a71aa26 AM |
11419 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
11420 | &local_syms, rel, input_bfd); | |
951fd09b | 11421 | if (retval == 0) |
411e1bfb AM |
11422 | return FALSE; |
11423 | ||
11424 | if (toc_tls) | |
11425 | { | |
951fd09b | 11426 | tls_mask = *toc_tls; |
411e1bfb AM |
11427 | if (r_type == R_PPC64_TOC16_DS |
11428 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
11429 | { |
11430 | if (tls_mask != 0 | |
11431 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
11432 | goto toctprel; | |
11433 | } | |
411e1bfb | 11434 | else |
951fd09b AM |
11435 | { |
11436 | /* If we found a GD reloc pair, then we might be | |
11437 | doing a GD->IE transition. */ | |
11438 | if (retval == 2) | |
11439 | { | |
11440 | tls_gd = TLS_TPRELGD; | |
11441 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 11442 | goto tls_ldgd_opt; |
951fd09b AM |
11443 | } |
11444 | else if (retval == 3) | |
11445 | { | |
11446 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 11447 | goto tls_ldgd_opt; |
951fd09b AM |
11448 | } |
11449 | } | |
411e1bfb AM |
11450 | } |
11451 | } | |
11452 | break; | |
11453 | ||
11454 | case R_PPC64_GOT_TPREL16_DS: | |
11455 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
11456 | if (tls_mask != 0 |
11457 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11458 | { |
81407a69 | 11459 | toctprel: |
4fe5ca5b | 11460 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
11461 | insn &= 31 << 21; |
11462 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 11463 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 11464 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
11465 | if (toc_symndx != 0) |
11466 | { | |
11467 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11468 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11469 | /* We changed the symbol. Start over in order to |
11470 | get h, sym, sec etc. right. */ | |
11471 | rel--; | |
11472 | continue; | |
11473 | } | |
11474 | else | |
11475 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11476 | } |
11477 | break; | |
11478 | ||
11479 | case R_PPC64_TLS: | |
951fd09b AM |
11480 | if (tls_mask != 0 |
11481 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 11482 | { |
411e1bfb | 11483 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
11484 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
11485 | if (insn == 0) | |
411e1bfb | 11486 | abort (); |
411e1bfb | 11487 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 11488 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
11489 | PPC64_TPREL16_LO which is at low-order half-word. */ |
11490 | rel->r_offset += d_offset; | |
0d4792f7 AM |
11491 | r_type = R_PPC64_TPREL16_LO; |
11492 | if (toc_symndx != 0) | |
11493 | { | |
11494 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 11495 | rel->r_addend = toc_addend; |
0d4792f7 AM |
11496 | /* We changed the symbol. Start over in order to |
11497 | get h, sym, sec etc. right. */ | |
11498 | rel--; | |
11499 | continue; | |
11500 | } | |
11501 | else | |
11502 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
11503 | } |
11504 | break; | |
11505 | ||
411e1bfb AM |
11506 | case R_PPC64_GOT_TLSGD16_HI: |
11507 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
11508 | tls_gd = TLS_TPRELGD; |
11509 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11510 | goto tls_gdld_hi; | |
11511 | break; | |
11512 | ||
411e1bfb AM |
11513 | case R_PPC64_GOT_TLSLD16_HI: |
11514 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11515 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 11516 | { |
951fd09b AM |
11517 | tls_gdld_hi: |
11518 | if ((tls_mask & tls_gd) != 0) | |
11519 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11520 | + R_PPC64_GOT_TPREL16_DS); | |
11521 | else | |
411e1bfb | 11522 | { |
951fd09b | 11523 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 11524 | rel->r_offset -= d_offset; |
951fd09b | 11525 | r_type = R_PPC64_NONE; |
411e1bfb | 11526 | } |
951fd09b | 11527 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
11528 | } |
11529 | break; | |
11530 | ||
951fd09b AM |
11531 | case R_PPC64_GOT_TLSGD16: |
11532 | case R_PPC64_GOT_TLSGD16_LO: | |
11533 | tls_gd = TLS_TPRELGD; | |
11534 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 11535 | goto tls_ldgd_opt; |
951fd09b | 11536 | break; |
411e1bfb | 11537 | |
951fd09b AM |
11538 | case R_PPC64_GOT_TLSLD16: |
11539 | case R_PPC64_GOT_TLSLD16_LO: | |
11540 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
11541 | { | |
3a71aa26 | 11542 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
11543 | bfd_vma offset; |
11544 | ||
11545 | tls_ldgd_opt: | |
727fc41e AM |
11546 | offset = (bfd_vma) -1; |
11547 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
11548 | __tls_get_addr calls, we must trust that the call | |
11549 | stays with its arg setup insns, ie. that the next | |
11550 | reloc is the __tls_get_addr call associated with | |
11551 | the current reloc. Edit both insns. */ | |
11552 | if (input_section->has_tls_get_addr_call | |
11553 | && rel + 1 < relend | |
11554 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
11555 | htab->tls_get_addr, | |
11556 | htab->tls_get_addr_fd)) | |
11557 | offset = rel[1].r_offset; | |
102890f0 | 11558 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 11559 | { |
102890f0 | 11560 | /* IE */ |
3a71aa26 AM |
11561 | insn1 = bfd_get_32 (output_bfd, |
11562 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
11563 | insn1 &= (1 << 26) - (1 << 2); |
11564 | insn1 |= 58 << 26; /* ld */ | |
11565 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 11566 | if (offset != (bfd_vma) -1) |
f58d5a2d | 11567 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
11568 | if ((tls_mask & TLS_EXPLICIT) == 0) |
11569 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
11570 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 11571 | else |
102890f0 AM |
11572 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
11573 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11574 | } | |
11575 | else | |
11576 | { | |
11577 | /* LE */ | |
11578 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
11579 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11580 | if (tls_gd == 0) | |
951fd09b | 11581 | { |
102890f0 | 11582 | /* Was an LD reloc. */ |
1d483afe AM |
11583 | if (toc_symndx) |
11584 | sec = local_sections[toc_symndx]; | |
11585 | for (r_symndx = 0; | |
11586 | r_symndx < symtab_hdr->sh_info; | |
11587 | r_symndx++) | |
11588 | if (local_sections[r_symndx] == sec) | |
11589 | break; | |
11590 | if (r_symndx >= symtab_hdr->sh_info) | |
11591 | r_symndx = 0; | |
102890f0 | 11592 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
11593 | if (r_symndx != 0) |
11594 | rel->r_addend -= (local_syms[r_symndx].st_value | |
11595 | + sec->output_offset | |
11596 | + sec->output_section->vma); | |
951fd09b | 11597 | } |
102890f0 | 11598 | else if (toc_symndx != 0) |
3a71aa26 AM |
11599 | { |
11600 | r_symndx = toc_symndx; | |
11601 | rel->r_addend = toc_addend; | |
11602 | } | |
102890f0 AM |
11603 | r_type = R_PPC64_TPREL16_HA; |
11604 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
11605 | if (offset != (bfd_vma) -1) |
11606 | { | |
11607 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
11608 | R_PPC64_TPREL16_LO); | |
11609 | rel[1].r_offset = offset + d_offset; | |
11610 | rel[1].r_addend = rel->r_addend; | |
11611 | } | |
102890f0 | 11612 | } |
3a71aa26 AM |
11613 | bfd_put_32 (output_bfd, insn1, |
11614 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
11615 | if (offset != (bfd_vma) -1) |
11616 | { | |
11617 | insn3 = bfd_get_32 (output_bfd, | |
11618 | contents + offset + 4); | |
11619 | if (insn3 == NOP | |
11620 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11621 | { | |
11622 | rel[1].r_offset += 4; | |
11623 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11624 | insn2 = NOP; | |
11625 | } | |
11626 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11627 | } | |
11628 | if ((tls_mask & tls_gd) == 0 | |
11629 | && (tls_gd == 0 || toc_symndx != 0)) | |
11630 | { | |
11631 | /* We changed the symbol. Start over in order | |
11632 | to get h, sym, sec etc. right. */ | |
11633 | rel--; | |
11634 | continue; | |
11635 | } | |
11636 | } | |
11637 | break; | |
11638 | ||
11639 | case R_PPC64_TLSGD: | |
11640 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
11641 | { | |
11642 | unsigned int insn2, insn3; | |
11643 | bfd_vma offset = rel->r_offset; | |
11644 | ||
11645 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11646 | { | |
11647 | /* IE */ | |
11648 | r_type = R_PPC64_NONE; | |
11649 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
11650 | } | |
11651 | else | |
11652 | { | |
11653 | /* LE */ | |
11654 | if (toc_symndx != 0) | |
11655 | { | |
11656 | r_symndx = toc_symndx; | |
11657 | rel->r_addend = toc_addend; | |
11658 | } | |
11659 | r_type = R_PPC64_TPREL16_LO; | |
11660 | rel->r_offset = offset + d_offset; | |
11661 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
11662 | } | |
11663 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11664 | /* Zap the reloc on the _tls_get_addr call too. */ | |
11665 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 11666 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
11667 | insn3 = bfd_get_32 (output_bfd, |
11668 | contents + offset + 4); | |
102890f0 AM |
11669 | if (insn3 == NOP |
11670 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11671 | { | |
727fc41e | 11672 | rel->r_offset += 4; |
3a71aa26 AM |
11673 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
11674 | insn2 = NOP; | |
102890f0 | 11675 | } |
102890f0 | 11676 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 11677 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 11678 | { |
102890f0 AM |
11679 | rel--; |
11680 | continue; | |
411e1bfb | 11681 | } |
411e1bfb | 11682 | } |
411e1bfb AM |
11683 | break; |
11684 | ||
727fc41e AM |
11685 | case R_PPC64_TLSLD: |
11686 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
11687 | { | |
11688 | unsigned int insn2, insn3; | |
11689 | bfd_vma offset = rel->r_offset; | |
11690 | ||
11691 | if (toc_symndx) | |
11692 | sec = local_sections[toc_symndx]; | |
11693 | for (r_symndx = 0; | |
11694 | r_symndx < symtab_hdr->sh_info; | |
11695 | r_symndx++) | |
11696 | if (local_sections[r_symndx] == sec) | |
11697 | break; | |
11698 | if (r_symndx >= symtab_hdr->sh_info) | |
11699 | r_symndx = 0; | |
11700 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
11701 | if (r_symndx != 0) | |
11702 | rel->r_addend -= (local_syms[r_symndx].st_value | |
11703 | + sec->output_offset | |
11704 | + sec->output_section->vma); | |
11705 | ||
11706 | r_type = R_PPC64_TPREL16_LO; | |
11707 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11708 | rel->r_offset = offset + d_offset; | |
11709 | /* Zap the reloc on the _tls_get_addr call too. */ | |
11710 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 11711 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
11712 | insn2 = 0x38630000; /* addi 3,3,0 */ |
11713 | insn3 = bfd_get_32 (output_bfd, | |
11714 | contents + offset + 4); | |
11715 | if (insn3 == NOP | |
11716 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
11717 | { | |
11718 | rel->r_offset += 4; | |
11719 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
11720 | insn2 = NOP; | |
11721 | } | |
11722 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
11723 | rel--; | |
11724 | continue; | |
11725 | } | |
11726 | break; | |
11727 | ||
411e1bfb | 11728 | case R_PPC64_DTPMOD64: |
951fd09b AM |
11729 | if (rel + 1 < relend |
11730 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
11731 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 11732 | { |
951fd09b AM |
11733 | if ((tls_mask & TLS_GD) == 0) |
11734 | { | |
11735 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
11736 | if ((tls_mask & TLS_TPRELGD) != 0) | |
11737 | r_type = R_PPC64_TPREL64; | |
11738 | else | |
11739 | { | |
4ce794b7 | 11740 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
11741 | r_type = R_PPC64_NONE; |
11742 | } | |
11743 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11744 | } | |
11745 | } | |
11746 | else | |
11747 | { | |
11748 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 11749 | { |
4ce794b7 | 11750 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 11751 | r_type = R_PPC64_NONE; |
951fd09b | 11752 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 11753 | } |
411e1bfb AM |
11754 | } |
11755 | break; | |
11756 | ||
11757 | case R_PPC64_TPREL64: | |
951fd09b | 11758 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
11759 | { |
11760 | r_type = R_PPC64_NONE; | |
11761 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
11762 | } | |
11763 | break; | |
11764 | } | |
11765 | ||
11766 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 11767 | insn = 0; |
b25116a9 AM |
11768 | max_br_offset = 1 << 25; |
11769 | addend = rel->r_addend; | |
65f38f15 | 11770 | switch (r_type) |
5bd4f169 AM |
11771 | { |
11772 | default: | |
65f38f15 | 11773 | break; |
5bd4f169 | 11774 | |
65f38f15 AM |
11775 | /* Branch taken prediction relocations. */ |
11776 | case R_PPC64_ADDR14_BRTAKEN: | |
11777 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
11778 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
11779 | /* Fall thru. */ | |
65f38f15 | 11780 | |
86c76c7b | 11781 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
11782 | case R_PPC64_ADDR14_BRNTAKEN: |
11783 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
11784 | insn |= bfd_get_32 (output_bfd, |
11785 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 11786 | /* Fall thru. */ |
86c76c7b | 11787 | |
b25116a9 AM |
11788 | case R_PPC64_REL14: |
11789 | max_br_offset = 1 << 15; | |
11790 | /* Fall thru. */ | |
5bd4f169 | 11791 | |
65f38f15 | 11792 | case R_PPC64_REL24: |
ad8e1ba5 AM |
11793 | /* Calls to functions with a different TOC, such as calls to |
11794 | shared objects, need to alter the TOC pointer. This is | |
11795 | done using a linkage stub. A REL24 branching to these | |
11796 | linkage stubs needs to be followed by a nop, as the nop | |
11797 | will be replaced with an instruction to restore the TOC | |
11798 | base pointer. */ | |
b25116a9 | 11799 | stub_entry = NULL; |
8387904d | 11800 | fdh = h; |
b31867b6 AM |
11801 | if (h != NULL |
11802 | && h->oh != NULL | |
11803 | && h->oh->is_func_descriptor) | |
11804 | fdh = ppc_follow_link (h->oh); | |
11805 | if (((fdh != NULL | |
11806 | && fdh->elf.plt.plist != NULL) | |
8387904d | 11807 | || (sec != NULL |
ad8e1ba5 | 11808 | && sec->output_section != NULL |
b25116a9 | 11809 | && sec->id <= htab->top_id |
ad8e1ba5 | 11810 | && (htab->stub_group[sec->id].toc_off |
25f23106 AM |
11811 | != htab->stub_group[input_section->id].toc_off)) |
11812 | || (h == NULL | |
11813 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
721956f4 | 11814 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
11815 | rel, htab)) != NULL |
11816 | && (stub_entry->stub_type == ppc_stub_plt_call | |
11817 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
11818 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 11819 | { |
b25116a9 | 11820 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 11821 | |
eea6121a | 11822 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 11823 | { |
b25116a9 AM |
11824 | unsigned long nop; |
11825 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
11826 | if (nop == NOP | |
11827 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 11828 | { |
a7f2871e AM |
11829 | if (h != NULL |
11830 | && (h == htab->tls_get_addr_fd | |
11831 | || h == htab->tls_get_addr) | |
11832 | && !htab->no_tls_get_addr_opt) | |
11833 | { | |
11834 | /* Special stub used, leave nop alone. */ | |
11835 | } | |
11836 | else | |
11837 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
11838 | contents + rel->r_offset + 4); | |
b25116a9 | 11839 | can_plt_call = TRUE; |
41bd81ab | 11840 | } |
5bd4f169 | 11841 | } |
721956f4 AM |
11842 | |
11843 | if (!can_plt_call) | |
11844 | { | |
ad8e1ba5 AM |
11845 | if (stub_entry->stub_type == ppc_stub_plt_call) |
11846 | { | |
11847 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
11848 | and link, don't require a nop. However, don't |
11849 | allow tail calls in a shared library as they | |
11850 | will result in r2 being corrupted. */ | |
b25116a9 AM |
11851 | unsigned long br; |
11852 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 11853 | if (info->executable && (br & 1) == 0) |
b25116a9 | 11854 | can_plt_call = TRUE; |
15b552e9 AM |
11855 | else |
11856 | stub_entry = NULL; | |
ad8e1ba5 | 11857 | } |
6ab189d5 | 11858 | else if (h != NULL |
039b3fef | 11859 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
11860 | ".__libc_start_main") == 0) |
11861 | { | |
11862 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 11863 | can_plt_call = TRUE; |
6ab189d5 | 11864 | } |
ad8e1ba5 AM |
11865 | else |
11866 | { | |
11867 | if (strcmp (input_section->output_section->name, | |
11868 | ".init") == 0 | |
11869 | || strcmp (input_section->output_section->name, | |
11870 | ".fini") == 0) | |
11871 | (*_bfd_error_handler) | |
d003868e | 11872 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
11873 | "not supported using your crt files; " |
11874 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
11875 | input_bfd, |
11876 | input_section, | |
ad8e1ba5 AM |
11877 | (long) rel->r_offset); |
11878 | else | |
11879 | (*_bfd_error_handler) | |
d003868e | 11880 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
11881 | "does not allow automatic multiple TOCs; " |
11882 | "recompile with -mminimal-toc or " | |
11883 | "-fno-optimize-sibling-calls, " | |
11884 | "or make `%s' extern"), | |
d003868e AM |
11885 | input_bfd, |
11886 | input_section, | |
ad8e1ba5 AM |
11887 | (long) rel->r_offset, |
11888 | sym_name, | |
11889 | sym_name); | |
11890 | bfd_set_error (bfd_error_bad_value); | |
11891 | ret = FALSE; | |
11892 | } | |
721956f4 AM |
11893 | } |
11894 | ||
b25116a9 AM |
11895 | if (can_plt_call |
11896 | && stub_entry->stub_type == ppc_stub_plt_call) | |
11897 | unresolved_reloc = FALSE; | |
11898 | } | |
11899 | ||
8387904d AM |
11900 | if (stub_entry == NULL |
11901 | && get_opd_info (sec) != NULL) | |
11902 | { | |
11903 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
11904 | bfd_vma off = (relocation + addend |
11905 | - sec->output_section->vma | |
11906 | - sec->output_offset); | |
8387904d AM |
11907 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
11908 | if (dest != (bfd_vma) -1) | |
11909 | { | |
11910 | relocation = dest; | |
11911 | addend = 0; | |
11912 | } | |
11913 | } | |
11914 | ||
b25116a9 AM |
11915 | /* If the branch is out of reach we ought to have a long |
11916 | branch stub. */ | |
11917 | from = (rel->r_offset | |
11918 | + input_section->output_offset | |
11919 | + input_section->output_section->vma); | |
11920 | ||
11921 | if (stub_entry == NULL | |
4cc603a5 | 11922 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
11923 | >= 2 * max_br_offset) |
11924 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
11925 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
11926 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
11927 | htab); | |
b25116a9 AM |
11928 | |
11929 | if (stub_entry != NULL) | |
11930 | { | |
11931 | /* Munge up the value and addend so that we call the stub | |
11932 | rather than the procedure directly. */ | |
11933 | relocation = (stub_entry->stub_offset | |
11934 | + stub_entry->stub_sec->output_offset | |
11935 | + stub_entry->stub_sec->output_section->vma); | |
11936 | addend = 0; | |
11937 | } | |
11938 | ||
11939 | if (insn != 0) | |
11940 | { | |
11941 | if (is_power4) | |
721956f4 | 11942 | { |
b25116a9 AM |
11943 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
11944 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
11945 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
11946 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
11947 | insn |= 0x02 << 21; | |
11948 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
11949 | insn |= 0x08 << 21; | |
11950 | else | |
11951 | break; | |
11952 | } | |
11953 | else | |
11954 | { | |
11955 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 11956 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 11957 | insn ^= 0x01 << 21; |
721956f4 | 11958 | } |
b25116a9 AM |
11959 | |
11960 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 11961 | } |
e86ce104 | 11962 | |
06da1e8e AM |
11963 | /* NOP out calls to undefined weak functions. |
11964 | We can thus call a weak function without first | |
11965 | checking whether the function is defined. */ | |
b25116a9 | 11966 | else if (h != NULL |
039b3fef | 11967 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 11968 | && h->elf.dynindx == -1 |
b25116a9 AM |
11969 | && r_type == R_PPC64_REL24 |
11970 | && relocation == 0 | |
4cc603a5 | 11971 | && addend == 0) |
e86ce104 | 11972 | { |
06da1e8e AM |
11973 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
11974 | continue; | |
e86ce104 | 11975 | } |
65f38f15 AM |
11976 | break; |
11977 | } | |
5bd4f169 | 11978 | |
65f38f15 | 11979 | /* Set `addend'. */ |
411e1bfb | 11980 | tls_type = 0; |
65f38f15 AM |
11981 | switch (r_type) |
11982 | { | |
11983 | default: | |
11984 | (*_bfd_error_handler) | |
d003868e AM |
11985 | (_("%B: unknown relocation type %d for symbol %s"), |
11986 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 11987 | |
65f38f15 | 11988 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11989 | ret = FALSE; |
65f38f15 | 11990 | continue; |
5bd4f169 | 11991 | |
65f38f15 | 11992 | case R_PPC64_NONE: |
411e1bfb | 11993 | case R_PPC64_TLS: |
727fc41e AM |
11994 | case R_PPC64_TLSGD: |
11995 | case R_PPC64_TLSLD: | |
04c9666a AM |
11996 | case R_PPC64_GNU_VTINHERIT: |
11997 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 11998 | continue; |
5bd4f169 AM |
11999 | |
12000 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
12001 | address in the GOT as relocation value instead of the | |
411e1bfb | 12002 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 12003 | symbol and put the symbol value there. */ |
411e1bfb AM |
12004 | case R_PPC64_GOT_TLSGD16: |
12005 | case R_PPC64_GOT_TLSGD16_LO: | |
12006 | case R_PPC64_GOT_TLSGD16_HI: | |
12007 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 12008 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
12009 | goto dogot; |
12010 | ||
12011 | case R_PPC64_GOT_TLSLD16: | |
12012 | case R_PPC64_GOT_TLSLD16_LO: | |
12013 | case R_PPC64_GOT_TLSLD16_HI: | |
12014 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12015 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
12016 | goto dogot; |
12017 | ||
12018 | case R_PPC64_GOT_TPREL16_DS: | |
12019 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12020 | case R_PPC64_GOT_TPREL16_HI: | |
12021 | case R_PPC64_GOT_TPREL16_HA: | |
12022 | tls_type = TLS_TLS | TLS_TPREL; | |
12023 | goto dogot; | |
12024 | ||
12025 | case R_PPC64_GOT_DTPREL16_DS: | |
12026 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12027 | case R_PPC64_GOT_DTPREL16_HI: | |
12028 | case R_PPC64_GOT_DTPREL16_HA: | |
12029 | tls_type = TLS_TLS | TLS_DTPREL; | |
12030 | goto dogot; | |
12031 | ||
65f38f15 AM |
12032 | case R_PPC64_GOT16: |
12033 | case R_PPC64_GOT16_LO: | |
12034 | case R_PPC64_GOT16_HI: | |
12035 | case R_PPC64_GOT16_HA: | |
12036 | case R_PPC64_GOT16_DS: | |
12037 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 12038 | dogot: |
5bd4f169 AM |
12039 | { |
12040 | /* Relocation is to the entry for this symbol in the global | |
12041 | offset table. */ | |
e717da7e | 12042 | asection *got; |
d881513a | 12043 | bfd_vma *offp; |
5bd4f169 | 12044 | bfd_vma off; |
d881513a | 12045 | unsigned long indx = 0; |
927be08e | 12046 | struct got_entry *ent; |
65f38f15 | 12047 | |
d881513a AM |
12048 | if (tls_type == (TLS_TLS | TLS_LD) |
12049 | && (h == NULL | |
f5385ebf | 12050 | || !h->elf.def_dynamic)) |
927be08e | 12051 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 12052 | else |
5bd4f169 | 12053 | { |
5bd4f169 | 12054 | |
d881513a AM |
12055 | if (h != NULL) |
12056 | { | |
12057 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
12058 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
12059 | &h->elf) | |
d881513a | 12060 | || (info->shared |
039b3fef | 12061 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
12062 | /* This is actually a static link, or it is a |
12063 | -Bsymbolic link and the symbol is defined | |
12064 | locally, or the symbol was forced to be local | |
12065 | because of a version file. */ | |
12066 | ; | |
12067 | else | |
12068 | { | |
039b3fef | 12069 | indx = h->elf.dynindx; |
d881513a AM |
12070 | unresolved_reloc = FALSE; |
12071 | } | |
039b3fef | 12072 | ent = h->elf.got.glist; |
d881513a | 12073 | } |
411e1bfb | 12074 | else |
5bd4f169 | 12075 | { |
d881513a AM |
12076 | if (local_got_ents == NULL) |
12077 | abort (); | |
12078 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 12079 | } |
d881513a AM |
12080 | |
12081 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 12082 | if (ent->addend == orig_addend |
e717da7e | 12083 | && ent->owner == input_bfd |
d881513a AM |
12084 | && ent->tls_type == tls_type) |
12085 | break; | |
5bd4f169 | 12086 | } |
411e1bfb | 12087 | |
927be08e AM |
12088 | if (ent == NULL) |
12089 | abort (); | |
12090 | if (ent->is_indirect) | |
12091 | ent = ent->got.ent; | |
12092 | offp = &ent->got.offset; | |
12093 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
12094 | if (got == NULL) |
12095 | abort (); | |
12096 | ||
411e1bfb AM |
12097 | /* The offset must always be a multiple of 8. We use the |
12098 | least significant bit to record whether we have already | |
12099 | processed this entry. */ | |
d881513a | 12100 | off = *offp; |
411e1bfb AM |
12101 | if ((off & 1) != 0) |
12102 | off &= ~1; | |
5bd4f169 AM |
12103 | else |
12104 | { | |
411e1bfb AM |
12105 | /* Generate relocs for the dynamic linker, except in |
12106 | the case of TLSLD where we'll use one entry per | |
12107 | module. */ | |
25f23106 AM |
12108 | asection *relgot; |
12109 | bfd_boolean ifunc; | |
e717da7e | 12110 | |
d881513a | 12111 | *offp = off | 1; |
25f23106 AM |
12112 | relgot = NULL; |
12113 | ifunc = (h != NULL | |
12114 | ? h->elf.type == STT_GNU_IFUNC | |
12115 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
4e795f50 | 12116 | if ((info->shared || indx != 0) |
927be08e AM |
12117 | && (h == NULL |
12118 | || (tls_type == (TLS_TLS | TLS_LD) | |
12119 | && !h->elf.def_dynamic) | |
039b3fef AM |
12120 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
12121 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
927be08e | 12122 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 AM |
12123 | else if (ifunc) |
12124 | relgot = htab->reliplt; | |
12125 | if (relgot != NULL) | |
5bd4f169 | 12126 | { |
e717da7e AM |
12127 | outrel.r_offset = (got->output_section->vma |
12128 | + got->output_offset | |
411e1bfb | 12129 | + off); |
4cc603a5 | 12130 | outrel.r_addend = addend; |
d881513a | 12131 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 12132 | { |
411e1bfb | 12133 | outrel.r_addend = 0; |
e515b051 | 12134 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
12135 | if (tls_type == (TLS_TLS | TLS_GD)) |
12136 | { | |
e717da7e AM |
12137 | loc = relgot->contents; |
12138 | loc += (relgot->reloc_count++ | |
d881513a AM |
12139 | * sizeof (Elf64_External_Rela)); |
12140 | bfd_elf64_swap_reloca_out (output_bfd, | |
12141 | &outrel, loc); | |
e515b051 | 12142 | outrel.r_offset += 8; |
4cc603a5 | 12143 | outrel.r_addend = addend; |
d881513a AM |
12144 | outrel.r_info |
12145 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 12146 | } |
411e1bfb | 12147 | } |
951fd09b | 12148 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 12149 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 12150 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12151 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
12152 | else if (indx != 0) |
12153 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
12154 | else | |
81407a69 | 12155 | { |
25f23106 AM |
12156 | if (ifunc) |
12157 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12158 | else | |
12159 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
12160 | |
12161 | /* Write the .got section contents for the sake | |
12162 | of prelink. */ | |
e717da7e | 12163 | loc = got->contents + off; |
23fbd6fa JJ |
12164 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
12165 | loc); | |
81407a69 | 12166 | } |
81407a69 AM |
12167 | |
12168 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
12169 | { |
12170 | outrel.r_addend += relocation; | |
12171 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 12172 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 12173 | } |
e717da7e AM |
12174 | loc = relgot->contents; |
12175 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
12176 | * sizeof (Elf64_External_Rela)); |
12177 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
12178 | } | |
12179 | ||
ad8e1ba5 | 12180 | /* Init the .got section contents here if we're not |
81407a69 | 12181 | emitting a reloc. */ |
d881513a | 12182 | else |
411e1bfb | 12183 | { |
4cc603a5 | 12184 | relocation += addend; |
7b609f53 AM |
12185 | if (tls_type == (TLS_TLS | TLS_LD)) |
12186 | relocation = 1; | |
12187 | else if (tls_type != 0) | |
411e1bfb | 12188 | { |
e1918d23 | 12189 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 12190 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12191 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 12192 | |
7b609f53 AM |
12193 | if (tls_type == (TLS_TLS | TLS_GD)) |
12194 | { | |
12195 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 12196 | got->contents + off + 8); |
7b609f53 AM |
12197 | relocation = 1; |
12198 | } | |
411e1bfb | 12199 | } |
7b609f53 | 12200 | |
411e1bfb | 12201 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 12202 | got->contents + off); |
5bd4f169 AM |
12203 | } |
12204 | } | |
12205 | ||
65f38f15 AM |
12206 | if (off >= (bfd_vma) -2) |
12207 | abort (); | |
12208 | ||
bf102f86 AM |
12209 | relocation = got->output_section->vma + got->output_offset + off; |
12210 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 12211 | } |
65f38f15 AM |
12212 | break; |
12213 | ||
12214 | case R_PPC64_PLT16_HA: | |
12215 | case R_PPC64_PLT16_HI: | |
12216 | case R_PPC64_PLT16_LO: | |
12217 | case R_PPC64_PLT32: | |
12218 | case R_PPC64_PLT64: | |
12219 | /* Relocation is to the entry for this symbol in the | |
12220 | procedure linkage table. */ | |
12221 | ||
12222 | /* Resolve a PLT reloc against a local symbol directly, | |
12223 | without using the procedure linkage table. */ | |
12224 | if (h == NULL) | |
12225 | break; | |
12226 | ||
411e1bfb AM |
12227 | /* It's possible that we didn't make a PLT entry for this |
12228 | symbol. This happens when statically linking PIC code, | |
12229 | or when using -Bsymbolic. Go find a match if there is a | |
12230 | PLT entry. */ | |
4ce794b7 | 12231 | if (htab->plt != NULL) |
65f38f15 | 12232 | { |
411e1bfb | 12233 | struct plt_entry *ent; |
039b3fef | 12234 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 12235 | if (ent->addend == orig_addend |
411e1bfb AM |
12236 | && ent->plt.offset != (bfd_vma) -1) |
12237 | { | |
4ce794b7 AM |
12238 | relocation = (htab->plt->output_section->vma |
12239 | + htab->plt->output_offset | |
411e1bfb AM |
12240 | + ent->plt.offset); |
12241 | unresolved_reloc = FALSE; | |
12242 | } | |
65f38f15 | 12243 | } |
65f38f15 | 12244 | break; |
5bd4f169 | 12245 | |
0b13192e AM |
12246 | case R_PPC64_TOC: |
12247 | /* Relocation value is TOC base. */ | |
12248 | relocation = TOCstart; | |
12249 | if (r_symndx == 0) | |
12250 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
12251 | else if (unresolved_reloc) |
12252 | ; | |
12253 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
12254 | relocation += htab->stub_group[sec->id].toc_off; |
12255 | else | |
12256 | unresolved_reloc = TRUE; | |
ab96bf03 | 12257 | goto dodyn; |
0b13192e | 12258 | |
5bd4f169 AM |
12259 | /* TOC16 relocs. We want the offset relative to the TOC base, |
12260 | which is the address of the start of the TOC plus 0x8000. | |
12261 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
12262 | in this order. */ | |
65f38f15 AM |
12263 | case R_PPC64_TOC16: |
12264 | case R_PPC64_TOC16_LO: | |
12265 | case R_PPC64_TOC16_HI: | |
12266 | case R_PPC64_TOC16_DS: | |
12267 | case R_PPC64_TOC16_LO_DS: | |
12268 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 12269 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
12270 | break; |
12271 | ||
12272 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
12273 | case R_PPC64_SECTOFF: |
12274 | case R_PPC64_SECTOFF_LO: | |
12275 | case R_PPC64_SECTOFF_HI: | |
12276 | case R_PPC64_SECTOFF_DS: | |
12277 | case R_PPC64_SECTOFF_LO_DS: | |
12278 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 12279 | if (sec != NULL) |
65f38f15 | 12280 | addend -= sec->output_section->vma; |
5bd4f169 AM |
12281 | break; |
12282 | ||
25f23106 AM |
12283 | case R_PPC64_REL16: |
12284 | case R_PPC64_REL16_LO: | |
12285 | case R_PPC64_REL16_HI: | |
12286 | case R_PPC64_REL16_HA: | |
12287 | break; | |
12288 | ||
721956f4 AM |
12289 | case R_PPC64_REL14: |
12290 | case R_PPC64_REL14_BRNTAKEN: | |
12291 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
12292 | case R_PPC64_REL24: |
12293 | break; | |
12294 | ||
411e1bfb AM |
12295 | case R_PPC64_TPREL16: |
12296 | case R_PPC64_TPREL16_LO: | |
12297 | case R_PPC64_TPREL16_HI: | |
12298 | case R_PPC64_TPREL16_HA: | |
12299 | case R_PPC64_TPREL16_DS: | |
12300 | case R_PPC64_TPREL16_LO_DS: | |
12301 | case R_PPC64_TPREL16_HIGHER: | |
12302 | case R_PPC64_TPREL16_HIGHERA: | |
12303 | case R_PPC64_TPREL16_HIGHEST: | |
12304 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
12305 | if (h != NULL |
12306 | && h->elf.root.type == bfd_link_hash_undefweak | |
12307 | && h->elf.dynindx == -1) | |
12308 | { | |
12309 | /* Make this relocation against an undefined weak symbol | |
12310 | resolve to zero. This is really just a tweak, since | |
12311 | code using weak externs ought to check that they are | |
12312 | defined before using them. */ | |
12313 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
12314 | ||
12315 | insn = bfd_get_32 (output_bfd, p); | |
12316 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
12317 | if (insn != 0) | |
12318 | bfd_put_32 (output_bfd, insn, p); | |
12319 | break; | |
12320 | } | |
e1918d23 | 12321 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
12322 | if (info->shared) |
12323 | /* The TPREL16 relocs shouldn't really be used in shared | |
12324 | libs as they will result in DT_TEXTREL being set, but | |
12325 | support them anyway. */ | |
12326 | goto dodyn; | |
12327 | break; | |
12328 | ||
12329 | case R_PPC64_DTPREL16: | |
12330 | case R_PPC64_DTPREL16_LO: | |
12331 | case R_PPC64_DTPREL16_HI: | |
12332 | case R_PPC64_DTPREL16_HA: | |
12333 | case R_PPC64_DTPREL16_DS: | |
12334 | case R_PPC64_DTPREL16_LO_DS: | |
12335 | case R_PPC64_DTPREL16_HIGHER: | |
12336 | case R_PPC64_DTPREL16_HIGHERA: | |
12337 | case R_PPC64_DTPREL16_HIGHEST: | |
12338 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 12339 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
12340 | break; |
12341 | ||
e515b051 AM |
12342 | case R_PPC64_DTPMOD64: |
12343 | relocation = 1; | |
12344 | addend = 0; | |
12345 | goto dodyn; | |
12346 | ||
411e1bfb | 12347 | case R_PPC64_TPREL64: |
e1918d23 | 12348 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
12349 | goto dodyn; |
12350 | ||
12351 | case R_PPC64_DTPREL64: | |
e1918d23 | 12352 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
12353 | /* Fall thru */ |
12354 | ||
65f38f15 AM |
12355 | /* Relocations that may need to be propagated if this is a |
12356 | dynamic object. */ | |
04c9666a | 12357 | case R_PPC64_REL30: |
65f38f15 AM |
12358 | case R_PPC64_REL32: |
12359 | case R_PPC64_REL64: | |
12360 | case R_PPC64_ADDR14: | |
12361 | case R_PPC64_ADDR14_BRNTAKEN: | |
12362 | case R_PPC64_ADDR14_BRTAKEN: | |
12363 | case R_PPC64_ADDR16: | |
12364 | case R_PPC64_ADDR16_DS: | |
12365 | case R_PPC64_ADDR16_HA: | |
12366 | case R_PPC64_ADDR16_HI: | |
12367 | case R_PPC64_ADDR16_HIGHER: | |
12368 | case R_PPC64_ADDR16_HIGHERA: | |
12369 | case R_PPC64_ADDR16_HIGHEST: | |
12370 | case R_PPC64_ADDR16_HIGHESTA: | |
12371 | case R_PPC64_ADDR16_LO: | |
12372 | case R_PPC64_ADDR16_LO_DS: | |
12373 | case R_PPC64_ADDR24: | |
65f38f15 AM |
12374 | case R_PPC64_ADDR32: |
12375 | case R_PPC64_ADDR64: | |
12376 | case R_PPC64_UADDR16: | |
12377 | case R_PPC64_UADDR32: | |
12378 | case R_PPC64_UADDR64: | |
411e1bfb | 12379 | dodyn: |
5d1634d7 | 12380 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
12381 | break; |
12382 | ||
41bd81ab AM |
12383 | if (NO_OPD_RELOCS && is_opd) |
12384 | break; | |
12385 | ||
65f38f15 | 12386 | if ((info->shared |
4e795f50 | 12387 | && (h == NULL |
039b3fef AM |
12388 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
12389 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 12390 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 12391 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
12392 | || (ELIMINATE_COPY_RELOCS |
12393 | && !info->shared | |
65f38f15 | 12394 | && h != NULL |
039b3fef | 12395 | && h->elf.dynindx != -1 |
f5385ebf | 12396 | && !h->elf.non_got_ref |
25f23106 AM |
12397 | && !h->elf.def_regular) |
12398 | || (!info->shared | |
12399 | && (h != NULL | |
12400 | ? h->elf.type == STT_GNU_IFUNC | |
12401 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 12402 | { |
b34976b6 | 12403 | bfd_boolean skip, relocate; |
65f38f15 | 12404 | asection *sreloc; |
1cf1f670 | 12405 | bfd_vma out_off; |
65f38f15 AM |
12406 | |
12407 | /* When generating a dynamic object, these relocations | |
12408 | are copied into the output file to be resolved at run | |
12409 | time. */ | |
12410 | ||
b34976b6 AM |
12411 | skip = FALSE; |
12412 | relocate = FALSE; | |
65f38f15 | 12413 | |
1cf1f670 AM |
12414 | out_off = _bfd_elf_section_offset (output_bfd, info, |
12415 | input_section, rel->r_offset); | |
12416 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 12417 | skip = TRUE; |
1cf1f670 | 12418 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 12419 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
12420 | out_off += (input_section->output_section->vma |
12421 | + input_section->output_offset); | |
12422 | outrel.r_offset = out_off; | |
411e1bfb | 12423 | outrel.r_addend = rel->r_addend; |
65f38f15 | 12424 | |
1cf1f670 AM |
12425 | /* Optimize unaligned reloc use. */ |
12426 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
12427 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
12428 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
12429 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
12430 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
12431 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
12432 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
12433 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
12434 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
12435 | ||
65f38f15 | 12436 | if (skip) |
0bb2d96a | 12437 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 12438 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
12439 | && !is_opd |
12440 | && r_type != R_PPC64_TOC) | |
039b3fef | 12441 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
12442 | else |
12443 | { | |
41bd81ab AM |
12444 | /* This symbol is local, or marked to become local, |
12445 | or this is an opd section reloc which must point | |
12446 | at a local function. */ | |
65f38f15 | 12447 | outrel.r_addend += relocation; |
e86ce104 | 12448 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 12449 | { |
3fad3c7c | 12450 | if (is_opd && h != NULL) |
afbe61cf AM |
12451 | { |
12452 | /* Lie about opd entries. This case occurs | |
12453 | when building shared libraries and we | |
12454 | reference a function in another shared | |
3fad3c7c AM |
12455 | lib. The same thing happens for a weak |
12456 | definition in an application that's | |
12457 | overridden by a strong definition in a | |
12458 | shared lib. (I believe this is a generic | |
12459 | bug in binutils handling of weak syms.) | |
12460 | In these cases we won't use the opd | |
1e2f5b6e | 12461 | entry in this lib. */ |
b34976b6 | 12462 | unresolved_reloc = FALSE; |
afbe61cf | 12463 | } |
25f23106 AM |
12464 | if (!is_opd |
12465 | && r_type == R_PPC64_ADDR64 | |
12466 | && (h != NULL | |
12467 | ? h->elf.type == STT_GNU_IFUNC | |
12468 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
12469 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12470 | else | |
12471 | { | |
12472 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 12473 | |
25f23106 AM |
12474 | /* We need to relocate .opd contents for ld.so. |
12475 | Prelink also wants simple and consistent rules | |
12476 | for relocs. This make all RELATIVE relocs have | |
12477 | *r_offset equal to r_addend. */ | |
12478 | relocate = TRUE; | |
12479 | } | |
65f38f15 AM |
12480 | } |
12481 | else | |
12482 | { | |
12483 | long indx = 0; | |
12484 | ||
25f23106 AM |
12485 | if (h != NULL |
12486 | ? h->elf.type == STT_GNU_IFUNC | |
12487 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
12488 | { | |
12489 | (*_bfd_error_handler) | |
12490 | (_("%B(%A+0x%lx): relocation %s for indirect " | |
12491 | "function %s unsupported"), | |
12492 | input_bfd, | |
12493 | input_section, | |
12494 | (long) rel->r_offset, | |
12495 | ppc64_elf_howto_table[r_type]->name, | |
12496 | sym_name); | |
12497 | ret = FALSE; | |
12498 | } | |
12499 | else if (r_symndx == 0 || bfd_is_abs_section (sec)) | |
65f38f15 AM |
12500 | ; |
12501 | else if (sec == NULL || sec->owner == NULL) | |
12502 | { | |
12503 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 12504 | return FALSE; |
65f38f15 AM |
12505 | } |
12506 | else | |
12507 | { | |
12508 | asection *osec; | |
12509 | ||
12510 | osec = sec->output_section; | |
12511 | indx = elf_section_data (osec)->dynindx; | |
12512 | ||
74541ad4 AM |
12513 | if (indx == 0) |
12514 | { | |
12515 | if ((osec->flags & SEC_READONLY) == 0 | |
12516 | && htab->elf.data_index_section != NULL) | |
12517 | osec = htab->elf.data_index_section; | |
12518 | else | |
12519 | osec = htab->elf.text_index_section; | |
12520 | indx = elf_section_data (osec)->dynindx; | |
12521 | } | |
12522 | BFD_ASSERT (indx != 0); | |
12523 | ||
65f38f15 AM |
12524 | /* We are turning this relocation into one |
12525 | against a section symbol, so subtract out | |
12526 | the output section's address but not the | |
12527 | offset of the input section in the output | |
12528 | section. */ | |
12529 | outrel.r_addend -= osec->vma; | |
12530 | } | |
12531 | ||
12532 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
12533 | } | |
12534 | } | |
12535 | ||
12536 | sreloc = elf_section_data (input_section)->sreloc; | |
25f23106 AM |
12537 | if (!htab->elf.dynamic_sections_created) |
12538 | sreloc = htab->reliplt; | |
65f38f15 AM |
12539 | if (sreloc == NULL) |
12540 | abort (); | |
12541 | ||
dfbb6ac9 AM |
12542 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
12543 | >= sreloc->size) | |
12544 | abort (); | |
947216bf AM |
12545 | loc = sreloc->contents; |
12546 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
12547 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
12548 | ||
12549 | /* If this reloc is against an external symbol, it will | |
12550 | be computed at runtime, so there's no need to do | |
81407a69 AM |
12551 | anything now. However, for the sake of prelink ensure |
12552 | that the section contents are a known value. */ | |
65f38f15 | 12553 | if (! relocate) |
81407a69 AM |
12554 | { |
12555 | unresolved_reloc = FALSE; | |
12556 | /* The value chosen here is quite arbitrary as ld.so | |
12557 | ignores section contents except for the special | |
12558 | case of .opd where the contents might be accessed | |
12559 | before relocation. Choose zero, as that won't | |
12560 | cause reloc overflow. */ | |
12561 | relocation = 0; | |
12562 | addend = 0; | |
12563 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
12564 | to improve backward compatibility with older | |
12565 | versions of ld. */ | |
12566 | if (r_type == R_PPC64_ADDR64) | |
12567 | addend = outrel.r_addend; | |
12568 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 12569 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
12570 | addend = (input_section->output_section->vma |
12571 | + input_section->output_offset | |
12572 | + rel->r_offset); | |
81407a69 | 12573 | } |
65f38f15 | 12574 | } |
5bd4f169 AM |
12575 | break; |
12576 | ||
65f38f15 AM |
12577 | case R_PPC64_COPY: |
12578 | case R_PPC64_GLOB_DAT: | |
12579 | case R_PPC64_JMP_SLOT: | |
25f23106 | 12580 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
12581 | case R_PPC64_RELATIVE: |
12582 | /* We shouldn't ever see these dynamic relocs in relocatable | |
12583 | files. */ | |
ae9a127f | 12584 | /* Fall through. */ |
65f38f15 AM |
12585 | |
12586 | case R_PPC64_PLTGOT16: | |
12587 | case R_PPC64_PLTGOT16_DS: | |
12588 | case R_PPC64_PLTGOT16_HA: | |
12589 | case R_PPC64_PLTGOT16_HI: | |
12590 | case R_PPC64_PLTGOT16_LO: | |
12591 | case R_PPC64_PLTGOT16_LO_DS: | |
12592 | case R_PPC64_PLTREL32: | |
12593 | case R_PPC64_PLTREL64: | |
12594 | /* These ones haven't been implemented yet. */ | |
12595 | ||
12596 | (*_bfd_error_handler) | |
d003868e AM |
12597 | (_("%B: relocation %s is not supported for symbol %s."), |
12598 | input_bfd, | |
4ce794b7 | 12599 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
12600 | |
12601 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 12602 | ret = FALSE; |
5bd4f169 | 12603 | continue; |
65f38f15 | 12604 | } |
5bd4f169 | 12605 | |
65f38f15 AM |
12606 | /* Do any further special processing. */ |
12607 | switch (r_type) | |
12608 | { | |
12609 | default: | |
12610 | break; | |
12611 | ||
12612 | case R_PPC64_ADDR16_HA: | |
25f23106 | 12613 | case R_PPC64_REL16_HA: |
65f38f15 AM |
12614 | case R_PPC64_ADDR16_HIGHERA: |
12615 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
12616 | case R_PPC64_TOC16_HA: |
12617 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
12618 | case R_PPC64_TPREL16_HA: |
12619 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
12620 | case R_PPC64_TPREL16_HIGHER: |
12621 | case R_PPC64_TPREL16_HIGHERA: | |
12622 | case R_PPC64_TPREL16_HIGHEST: | |
12623 | case R_PPC64_TPREL16_HIGHESTA: | |
12624 | case R_PPC64_DTPREL16_HIGHER: | |
12625 | case R_PPC64_DTPREL16_HIGHERA: | |
12626 | case R_PPC64_DTPREL16_HIGHEST: | |
12627 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
12628 | /* It's just possible that this symbol is a weak symbol |
12629 | that's not actually defined anywhere. In that case, | |
12630 | 'sec' would be NULL, and we should leave the symbol | |
12631 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
12632 | if (sec == NULL) |
12633 | break; | |
12634 | /* Fall thru */ | |
12635 | ||
12636 | case R_PPC64_GOT16_HA: | |
12637 | case R_PPC64_PLTGOT16_HA: | |
12638 | case R_PPC64_PLT16_HA: | |
12639 | case R_PPC64_GOT_TLSGD16_HA: | |
12640 | case R_PPC64_GOT_TLSLD16_HA: | |
12641 | case R_PPC64_GOT_TPREL16_HA: | |
12642 | case R_PPC64_GOT_DTPREL16_HA: | |
12643 | /* Add 0x10000 if sign bit in 0:15 is set. | |
12644 | Bits 0:15 are not used. */ | |
12645 | addend += 0x8000; | |
65f38f15 AM |
12646 | break; |
12647 | ||
12648 | case R_PPC64_ADDR16_DS: | |
12649 | case R_PPC64_ADDR16_LO_DS: | |
12650 | case R_PPC64_GOT16_DS: | |
12651 | case R_PPC64_GOT16_LO_DS: | |
12652 | case R_PPC64_PLT16_LO_DS: | |
12653 | case R_PPC64_SECTOFF_DS: | |
12654 | case R_PPC64_SECTOFF_LO_DS: | |
12655 | case R_PPC64_TOC16_DS: | |
12656 | case R_PPC64_TOC16_LO_DS: | |
12657 | case R_PPC64_PLTGOT16_DS: | |
12658 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
12659 | case R_PPC64_GOT_TPREL16_DS: |
12660 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12661 | case R_PPC64_GOT_DTPREL16_DS: | |
12662 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12663 | case R_PPC64_TPREL16_DS: | |
12664 | case R_PPC64_TPREL16_LO_DS: | |
12665 | case R_PPC64_DTPREL16_DS: | |
12666 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
12667 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
12668 | mask = 3; | |
12669 | /* If this reloc is against an lq insn, then the value must be | |
12670 | a multiple of 16. This is somewhat of a hack, but the | |
12671 | "correct" way to do this by defining _DQ forms of all the | |
12672 | _DS relocs bloats all reloc switches in this file. It | |
12673 | doesn't seem to make much sense to use any of these relocs | |
12674 | in data, so testing the insn should be safe. */ | |
494dac0c | 12675 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
12676 | mask = 15; |
12677 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
12678 | { |
12679 | (*_bfd_error_handler) | |
d003868e AM |
12680 | (_("%B: error: relocation %s not a multiple of %d"), |
12681 | input_bfd, | |
4ce794b7 | 12682 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 12683 | mask + 1); |
65f38f15 | 12684 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 12685 | ret = FALSE; |
65f38f15 AM |
12686 | continue; |
12687 | } | |
12688 | break; | |
5bd4f169 AM |
12689 | } |
12690 | ||
239e1f3a AM |
12691 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
12692 | because such sections are not SEC_ALLOC and thus ld.so will | |
12693 | not process them. */ | |
65f38f15 | 12694 | if (unresolved_reloc |
239e1f3a | 12695 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 12696 | && h->elf.def_dynamic)) |
9c07fe7c AM |
12697 | { |
12698 | (*_bfd_error_handler) | |
d003868e AM |
12699 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
12700 | input_bfd, | |
12701 | input_section, | |
9c07fe7c | 12702 | (long) rel->r_offset, |
7b609f53 | 12703 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 12704 | h->elf.root.root.string); |
b34976b6 | 12705 | ret = FALSE; |
9c07fe7c | 12706 | } |
5bd4f169 | 12707 | |
65f38f15 | 12708 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
12709 | input_bfd, |
12710 | input_section, | |
12711 | contents, | |
411e1bfb | 12712 | rel->r_offset, |
5bd4f169 AM |
12713 | relocation, |
12714 | addend); | |
12715 | ||
ef60b7ff | 12716 | if (r != bfd_reloc_ok) |
5bd4f169 | 12717 | { |
cd27b276 AM |
12718 | if (sym_name == NULL) |
12719 | sym_name = "(null)"; | |
12720 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 12721 | { |
cd27b276 AM |
12722 | if (warned) |
12723 | continue; | |
12724 | if (h != NULL | |
039b3fef | 12725 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 12726 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
12727 | { |
12728 | /* Assume this is a call protected by other code that | |
12729 | detects the symbol is undefined. If this is the case, | |
12730 | we can safely ignore the overflow. If not, the | |
12731 | program is hosed anyway, and a little warning isn't | |
12732 | going to help. */ | |
12733 | ||
12734 | continue; | |
12735 | } | |
12736 | ||
ef60b7ff | 12737 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
12738 | (info, (h ? &h->elf.root : NULL), sym_name, |
12739 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 12740 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 12741 | return FALSE; |
ef60b7ff AM |
12742 | } |
12743 | else | |
12744 | { | |
12745 | (*_bfd_error_handler) | |
d003868e AM |
12746 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
12747 | input_bfd, | |
12748 | input_section, | |
7b609f53 | 12749 | (long) rel->r_offset, |
4ce794b7 | 12750 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
12751 | sym_name, |
12752 | (int) r); | |
b34976b6 | 12753 | ret = FALSE; |
ef60b7ff | 12754 | } |
5bd4f169 | 12755 | } |
5bd4f169 AM |
12756 | } |
12757 | ||
645ea6a9 AM |
12758 | /* If we're emitting relocations, then shortly after this function |
12759 | returns, reloc offsets and addends for this section will be | |
12760 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
12761 | file rather than the input. Save a copy of the relocs for |
12762 | opd_entry_value. */ | |
4cc603a5 | 12763 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
12764 | { |
12765 | bfd_size_type amt; | |
12766 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
12767 | rel = bfd_alloc (input_bfd, amt); | |
12768 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
12769 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
12770 | if (rel == NULL) | |
12771 | return FALSE; | |
12772 | memcpy (rel, relocs, amt); | |
12773 | } | |
5bd4f169 AM |
12774 | return ret; |
12775 | } | |
12776 | ||
754021d0 AM |
12777 | /* Adjust the value of any local symbols in opd sections. */ |
12778 | ||
6e0b88f1 | 12779 | static int |
754021d0 AM |
12780 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
12781 | const char *name ATTRIBUTE_UNUSED, | |
12782 | Elf_Internal_Sym *elfsym, | |
12783 | asection *input_sec, | |
12784 | struct elf_link_hash_entry *h) | |
12785 | { | |
74f0fb50 AM |
12786 | struct _opd_sec_data *opd; |
12787 | long adjust; | |
754021d0 AM |
12788 | bfd_vma value; |
12789 | ||
4025353c | 12790 | if (h != NULL) |
6e0b88f1 | 12791 | return 1; |
4025353c | 12792 | |
74f0fb50 AM |
12793 | opd = get_opd_info (input_sec); |
12794 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 12795 | return 1; |
754021d0 AM |
12796 | |
12797 | value = elfsym->st_value - input_sec->output_offset; | |
12798 | if (!info->relocatable) | |
12799 | value -= input_sec->output_section->vma; | |
12800 | ||
74f0fb50 | 12801 | adjust = opd->adjust[value / 8]; |
4025353c | 12802 | if (adjust == -1) |
6e0b88f1 AM |
12803 | return 2; |
12804 | ||
12805 | elfsym->st_value += adjust; | |
12806 | return 1; | |
754021d0 AM |
12807 | } |
12808 | ||
5bd4f169 AM |
12809 | /* Finish up dynamic symbol handling. We set the contents of various |
12810 | dynamic sections here. */ | |
12811 | ||
b34976b6 | 12812 | static bfd_boolean |
4ce794b7 AM |
12813 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
12814 | struct bfd_link_info *info, | |
12815 | struct elf_link_hash_entry *h, | |
12816 | Elf_Internal_Sym *sym) | |
5bd4f169 | 12817 | { |
65f38f15 | 12818 | struct ppc_link_hash_table *htab; |
8387904d AM |
12819 | struct plt_entry *ent; |
12820 | Elf_Internal_Rela rela; | |
12821 | bfd_byte *loc; | |
5bd4f169 | 12822 | |
65f38f15 | 12823 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12824 | if (htab == NULL) |
12825 | return FALSE; | |
5bd4f169 | 12826 | |
8387904d AM |
12827 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
12828 | if (ent->plt.offset != (bfd_vma) -1) | |
12829 | { | |
12830 | /* This symbol has an entry in the procedure linkage | |
12831 | table. Set it up. */ | |
e054468f AM |
12832 | if (!htab->elf.dynamic_sections_created |
12833 | || h->dynindx == -1) | |
12834 | { | |
12835 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
12836 | && h->def_regular | |
12837 | && (h->root.type == bfd_link_hash_defined | |
12838 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
12839 | rela.r_offset = (htab->iplt->output_section->vma |
12840 | + htab->iplt->output_offset | |
12841 | + ent->plt.offset); | |
12842 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
12843 | rela.r_addend = (h->root.u.def.value |
12844 | + h->root.u.def.section->output_offset | |
12845 | + h->root.u.def.section->output_section->vma | |
12846 | + ent->addend); | |
25f23106 AM |
12847 | loc = (htab->reliplt->contents |
12848 | + (htab->reliplt->reloc_count++ | |
12849 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
12850 | } |
12851 | else | |
12852 | { | |
25f23106 AM |
12853 | rela.r_offset = (htab->plt->output_section->vma |
12854 | + htab->plt->output_offset | |
12855 | + ent->plt.offset); | |
e054468f AM |
12856 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
12857 | rela.r_addend = ent->addend; | |
25f23106 AM |
12858 | loc = (htab->relplt->contents |
12859 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
12860 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 12861 | } |
8387904d AM |
12862 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
12863 | } | |
5bd4f169 | 12864 | |
f5385ebf | 12865 | if (h->needs_copy) |
5bd4f169 | 12866 | { |
65f38f15 | 12867 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 12868 | |
65f38f15 AM |
12869 | if (h->dynindx == -1 |
12870 | || (h->root.type != bfd_link_hash_defined | |
12871 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 12872 | || htab->relbss == NULL) |
65f38f15 | 12873 | abort (); |
5bd4f169 AM |
12874 | |
12875 | rela.r_offset = (h->root.u.def.value | |
12876 | + h->root.u.def.section->output_section->vma | |
12877 | + h->root.u.def.section->output_offset); | |
12878 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
12879 | rela.r_addend = 0; | |
4ce794b7 AM |
12880 | loc = htab->relbss->contents; |
12881 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 12882 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
12883 | } |
12884 | ||
5bd4f169 AM |
12885 | /* Mark some specially defined symbols as absolute. */ |
12886 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
12887 | sym->st_shndx = SHN_ABS; | |
12888 | ||
b34976b6 | 12889 | return TRUE; |
5bd4f169 AM |
12890 | } |
12891 | ||
65f38f15 AM |
12892 | /* Used to decide how to sort relocs in an optimal manner for the |
12893 | dynamic linker, before writing them out. */ | |
12894 | ||
12895 | static enum elf_reloc_type_class | |
4ce794b7 | 12896 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 12897 | { |
04c9666a | 12898 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 12899 | |
4ce794b7 | 12900 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 12901 | switch (r_type) |
65f38f15 AM |
12902 | { |
12903 | case R_PPC64_RELATIVE: | |
12904 | return reloc_class_relative; | |
12905 | case R_PPC64_JMP_SLOT: | |
12906 | return reloc_class_plt; | |
12907 | case R_PPC64_COPY: | |
12908 | return reloc_class_copy; | |
12909 | default: | |
12910 | return reloc_class_normal; | |
12911 | } | |
12912 | } | |
12913 | ||
5bd4f169 AM |
12914 | /* Finish up the dynamic sections. */ |
12915 | ||
b34976b6 | 12916 | static bfd_boolean |
4ce794b7 AM |
12917 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
12918 | struct bfd_link_info *info) | |
5bd4f169 | 12919 | { |
65f38f15 AM |
12920 | struct ppc_link_hash_table *htab; |
12921 | bfd *dynobj; | |
5bd4f169 | 12922 | asection *sdyn; |
5bd4f169 | 12923 | |
65f38f15 | 12924 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
12925 | if (htab == NULL) |
12926 | return FALSE; | |
12927 | ||
65f38f15 | 12928 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
12929 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
12930 | ||
65f38f15 | 12931 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 12932 | { |
5bd4f169 AM |
12933 | Elf64_External_Dyn *dyncon, *dynconend; |
12934 | ||
4ce794b7 | 12935 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 12936 | abort (); |
5bd4f169 AM |
12937 | |
12938 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 12939 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
12940 | for (; dyncon < dynconend; dyncon++) |
12941 | { | |
12942 | Elf_Internal_Dyn dyn; | |
19397422 | 12943 | asection *s; |
5bd4f169 AM |
12944 | |
12945 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
12946 | ||
12947 | switch (dyn.d_tag) | |
12948 | { | |
65f38f15 AM |
12949 | default: |
12950 | continue; | |
5bd4f169 | 12951 | |
5d1634d7 | 12952 | case DT_PPC64_GLINK: |
4ce794b7 | 12953 | s = htab->glink; |
6348e046 | 12954 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
12955 | /* We stupidly defined DT_PPC64_GLINK to be the start |
12956 | of glink rather than the first entry point, which is | |
12957 | what ld.so needs, and now have a bigger stub to | |
12958 | support automatic multiple TOCs. */ | |
12959 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
12960 | break; |
12961 | ||
19397422 AM |
12962 | case DT_PPC64_OPD: |
12963 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12964 | if (s == NULL) |
12965 | continue; | |
12966 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
12967 | break; |
12968 | ||
12969 | case DT_PPC64_OPDSZ: | |
12970 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
12971 | if (s == NULL) |
12972 | continue; | |
eea6121a | 12973 | dyn.d_un.d_val = s->size; |
19397422 AM |
12974 | break; |
12975 | ||
65f38f15 | 12976 | case DT_PLTGOT: |
4ce794b7 | 12977 | s = htab->plt; |
6348e046 | 12978 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
12979 | break; |
12980 | ||
12981 | case DT_JMPREL: | |
4ce794b7 | 12982 | s = htab->relplt; |
6348e046 | 12983 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 12984 | break; |
5bd4f169 | 12985 | |
65f38f15 | 12986 | case DT_PLTRELSZ: |
eea6121a | 12987 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
12988 | break; |
12989 | ||
12990 | case DT_RELASZ: | |
12991 | /* Don't count procedure linkage table relocs in the | |
12992 | overall reloc count. */ | |
4ce794b7 | 12993 | s = htab->relplt; |
6348e046 AM |
12994 | if (s == NULL) |
12995 | continue; | |
eea6121a | 12996 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
12997 | break; |
12998 | ||
12999 | case DT_RELA: | |
13000 | /* We may not be using the standard ELF linker script. | |
13001 | If .rela.plt is the first .rela section, we adjust | |
13002 | DT_RELA to not include it. */ | |
4ce794b7 | 13003 | s = htab->relplt; |
6348e046 AM |
13004 | if (s == NULL) |
13005 | continue; | |
13006 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
13007 | continue; | |
eea6121a | 13008 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 13009 | break; |
5bd4f169 | 13010 | } |
5bd4f169 | 13011 | |
65f38f15 | 13012 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 13013 | } |
5bd4f169 AM |
13014 | } |
13015 | ||
eea6121a | 13016 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
13017 | { |
13018 | /* Fill in the first entry in the global offset table. | |
13019 | We use it to hold the link-time TOCbase. */ | |
13020 | bfd_put_64 (output_bfd, | |
60ee0d4a | 13021 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 13022 | htab->got->contents); |
5d1634d7 AM |
13023 | |
13024 | /* Set .got entry size. */ | |
4ce794b7 | 13025 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
13026 | } |
13027 | ||
eea6121a | 13028 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
13029 | { |
13030 | /* Set .plt entry size. */ | |
4ce794b7 | 13031 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
13032 | = PLT_ENTRY_SIZE; |
13033 | } | |
13034 | ||
84f5d08e AM |
13035 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
13036 | brlt ourselves if emitrelocations. */ | |
13037 | if (htab->brlt != NULL | |
13038 | && htab->brlt->reloc_count != 0 | |
13039 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13040 | htab->brlt, | |
13041 | &elf_section_data (htab->brlt)->rel_hdr, | |
13042 | elf_section_data (htab->brlt)->relocs, | |
13043 | NULL)) | |
13044 | return FALSE; | |
13045 | ||
176a0d42 AM |
13046 | if (htab->glink != NULL |
13047 | && htab->glink->reloc_count != 0 | |
13048 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13049 | htab->glink, | |
13050 | &elf_section_data (htab->glink)->rel_hdr, | |
13051 | elf_section_data (htab->glink)->relocs, | |
13052 | NULL)) | |
13053 | return FALSE; | |
13054 | ||
e717da7e | 13055 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
13056 | since we didn't add them to DYNOBJ. We know dynobj is the first |
13057 | bfd. */ | |
e717da7e AM |
13058 | while ((dynobj = dynobj->link_next) != NULL) |
13059 | { | |
13060 | asection *s; | |
7b53ace3 | 13061 | |
0c8d6e5c | 13062 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
13063 | continue; |
13064 | ||
e717da7e AM |
13065 | s = ppc64_elf_tdata (dynobj)->got; |
13066 | if (s != NULL | |
eea6121a | 13067 | && s->size != 0 |
e717da7e AM |
13068 | && s->output_section != bfd_abs_section_ptr |
13069 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13070 | s->contents, s->output_offset, | |
eea6121a | 13071 | s->size)) |
e717da7e AM |
13072 | return FALSE; |
13073 | s = ppc64_elf_tdata (dynobj)->relgot; | |
13074 | if (s != NULL | |
eea6121a | 13075 | && s->size != 0 |
e717da7e AM |
13076 | && s->output_section != bfd_abs_section_ptr |
13077 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13078 | s->contents, s->output_offset, | |
eea6121a | 13079 | s->size)) |
e717da7e AM |
13080 | return FALSE; |
13081 | } | |
f6c52c13 | 13082 | |
b34976b6 | 13083 | return TRUE; |
5bd4f169 AM |
13084 | } |
13085 | ||
5bd4f169 | 13086 | #include "elf64-target.h" |