Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
3 | 2009 Free Software Foundation, Inc. | |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 58 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
63 | #define ELF_ARCH bfd_arch_powerpc | |
64 | #define ELF_MACHINE_CODE EM_PPC64 | |
65 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
68 | ||
69 | #define elf_backend_want_got_sym 0 | |
70 | #define elf_backend_want_plt_sym 0 | |
71 | #define elf_backend_plt_alignment 3 | |
72 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
75 | #define elf_backend_can_refcount 1 | |
76 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 78 | |
e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
87 | |
88 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 95 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 99 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 100 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
101 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
102 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
103 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
104 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
105 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
106 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 107 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 108 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
109 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
110 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
111 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
112 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 113 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 114 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 115 | |
5bd4f169 AM |
116 | /* The name of the dynamic interpreter. This is put in the .interp |
117 | section. */ | |
118 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
119 | ||
120 | /* The size in bytes of an entry in the procedure linkage table. */ | |
121 | #define PLT_ENTRY_SIZE 24 | |
122 | ||
123 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 124 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
125 | |
126 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
127 | #define TOC_BASE_OFF 0x8000 |
128 | ||
129 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
130 | #define TP_OFFSET 0x7000 | |
131 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 132 | |
ad8e1ba5 AM |
133 | /* .plt call stub instructions. The normal stub is like this, but |
134 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 135 | insert an addi to adjust r12. */ |
ad8e1ba5 | 136 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
137 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
138 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
139 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 140 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 141 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
142 | /* ld %r11,xxx+16@l(%r12) */ |
143 | #define BCTR 0x4e800420 /* bctr */ | |
144 | ||
5d1634d7 | 145 | |
ee4bf8d2 | 146 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 147 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
148 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
149 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
150 | ||
ac2df442 AM |
151 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
152 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
153 | ||
ad8e1ba5 AM |
154 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
155 | ||
ee4bf8d2 | 156 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 157 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
158 | /* 0: */ |
159 | /* .quad plt0-1f */ | |
160 | /* __glink: */ | |
161 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
162 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
163 | /* 1: */ | |
164 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
165 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
166 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
167 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
168 | /* ld %11,0(%12) */ | |
169 | /* ld %2,8(%12) */ | |
170 | /* mtctr %11 */ | |
171 | /* ld %11,16(%12) */ | |
172 | /* bctr */ | |
5d1634d7 AM |
173 | |
174 | /* Pad with this. */ | |
175 | #define NOP 0x60000000 | |
176 | ||
721956f4 AM |
177 | /* Some other nops. */ |
178 | #define CROR_151515 0x4def7b82 | |
179 | #define CROR_313131 0x4ffffb82 | |
180 | ||
cedb70c5 | 181 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
182 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
183 | #define B_DOT 0x48000000 /* b . */ | |
184 | ||
185 | /* After that, we need two instructions to load the index, followed by | |
186 | a branch. */ | |
187 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 188 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 189 | |
deb0e272 AM |
190 | /* Instructions used by the save and restore reg functions. */ |
191 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
192 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
193 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
194 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
195 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
196 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
197 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
198 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
199 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
200 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
201 | #define BLR 0x4e800020 /* blr */ |
202 | ||
41bd81ab AM |
203 | /* Since .opd is an array of descriptors and each entry will end up |
204 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
205 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 206 | relocate .opd without reloc entries. */ |
41bd81ab AM |
207 | #ifndef NO_OPD_RELOCS |
208 | #define NO_OPD_RELOCS 0 | |
209 | #endif | |
5bd4f169 | 210 | \f |
f5e87a1d | 211 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 212 | |
5bd4f169 | 213 | /* Relocation HOWTO's. */ |
04c9666a | 214 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
215 | |
216 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
217 | /* This reloc does nothing. */ | |
218 | HOWTO (R_PPC64_NONE, /* type */ | |
219 | 0, /* rightshift */ | |
411e1bfb AM |
220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
221 | 32, /* bitsize */ | |
b34976b6 | 222 | FALSE, /* pc_relative */ |
5bd4f169 | 223 | 0, /* bitpos */ |
f5e87a1d | 224 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
225 | bfd_elf_generic_reloc, /* special_function */ |
226 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 227 | FALSE, /* partial_inplace */ |
d006db6c | 228 | 0, /* src_mask */ |
5bd4f169 | 229 | 0, /* dst_mask */ |
b34976b6 | 230 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
231 | |
232 | /* A standard 32 bit relocation. */ | |
233 | HOWTO (R_PPC64_ADDR32, /* type */ | |
234 | 0, /* rightshift */ | |
235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
236 | 32, /* bitsize */ | |
b34976b6 | 237 | FALSE, /* pc_relative */ |
5bd4f169 AM |
238 | 0, /* bitpos */ |
239 | complain_overflow_bitfield, /* complain_on_overflow */ | |
240 | bfd_elf_generic_reloc, /* special_function */ | |
241 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 242 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
243 | 0, /* src_mask */ |
244 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 245 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
246 | |
247 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
248 | FIXME: we don't check that, we just clear them. */ | |
249 | HOWTO (R_PPC64_ADDR24, /* type */ | |
250 | 0, /* rightshift */ | |
251 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
252 | 26, /* bitsize */ | |
b34976b6 | 253 | FALSE, /* pc_relative */ |
5bd4f169 AM |
254 | 0, /* bitpos */ |
255 | complain_overflow_bitfield, /* complain_on_overflow */ | |
256 | bfd_elf_generic_reloc, /* special_function */ | |
257 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 258 | FALSE, /* partial_inplace */ |
d006db6c | 259 | 0, /* src_mask */ |
f5e87a1d | 260 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 261 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
262 | |
263 | /* A standard 16 bit relocation. */ | |
264 | HOWTO (R_PPC64_ADDR16, /* type */ | |
265 | 0, /* rightshift */ | |
266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
267 | 16, /* bitsize */ | |
b34976b6 | 268 | FALSE, /* pc_relative */ |
5bd4f169 AM |
269 | 0, /* bitpos */ |
270 | complain_overflow_bitfield, /* complain_on_overflow */ | |
271 | bfd_elf_generic_reloc, /* special_function */ | |
272 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 273 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
274 | 0, /* src_mask */ |
275 | 0xffff, /* dst_mask */ | |
b34976b6 | 276 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
277 | |
278 | /* A 16 bit relocation without overflow. */ | |
279 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
280 | 0, /* rightshift */ | |
281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
282 | 16, /* bitsize */ | |
b34976b6 | 283 | FALSE, /* pc_relative */ |
5bd4f169 AM |
284 | 0, /* bitpos */ |
285 | complain_overflow_dont,/* complain_on_overflow */ | |
286 | bfd_elf_generic_reloc, /* special_function */ | |
287 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 288 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
289 | 0, /* src_mask */ |
290 | 0xffff, /* dst_mask */ | |
b34976b6 | 291 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
292 | |
293 | /* Bits 16-31 of an address. */ | |
294 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
295 | 16, /* rightshift */ | |
296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
297 | 16, /* bitsize */ | |
b34976b6 | 298 | FALSE, /* pc_relative */ |
5bd4f169 AM |
299 | 0, /* bitpos */ |
300 | complain_overflow_dont, /* complain_on_overflow */ | |
301 | bfd_elf_generic_reloc, /* special_function */ | |
302 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 303 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
304 | 0, /* src_mask */ |
305 | 0xffff, /* dst_mask */ | |
b34976b6 | 306 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
307 | |
308 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
309 | bits, treated as a signed number, is negative. */ | |
310 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
311 | 16, /* rightshift */ | |
312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
313 | 16, /* bitsize */ | |
b34976b6 | 314 | FALSE, /* pc_relative */ |
5bd4f169 AM |
315 | 0, /* bitpos */ |
316 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 317 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 318 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 319 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
320 | 0, /* src_mask */ |
321 | 0xffff, /* dst_mask */ | |
b34976b6 | 322 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
323 | |
324 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
325 | FIXME: we don't check that, we just clear them. */ | |
326 | HOWTO (R_PPC64_ADDR14, /* type */ | |
327 | 0, /* rightshift */ | |
328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
329 | 16, /* bitsize */ | |
b34976b6 | 330 | FALSE, /* pc_relative */ |
5bd4f169 AM |
331 | 0, /* bitpos */ |
332 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 333 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 334 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 335 | FALSE, /* partial_inplace */ |
d006db6c | 336 | 0, /* src_mask */ |
f5e87a1d | 337 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 338 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
339 | |
340 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
341 | indicate that the branch is expected to be taken. The lower two | |
342 | bits must be zero. */ | |
343 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
344 | 0, /* rightshift */ | |
345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
346 | 16, /* bitsize */ | |
b34976b6 | 347 | FALSE, /* pc_relative */ |
5bd4f169 AM |
348 | 0, /* bitpos */ |
349 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 350 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 351 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 352 | FALSE, /* partial_inplace */ |
d006db6c | 353 | 0, /* src_mask */ |
f5e87a1d | 354 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 355 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
356 | |
357 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
358 | indicate that the branch is not expected to be taken. The lower | |
359 | two bits must be zero. */ | |
360 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
361 | 0, /* rightshift */ | |
362 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
363 | 16, /* bitsize */ | |
b34976b6 | 364 | FALSE, /* pc_relative */ |
5bd4f169 AM |
365 | 0, /* bitpos */ |
366 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 367 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 368 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 369 | FALSE, /* partial_inplace */ |
d006db6c | 370 | 0, /* src_mask */ |
f5e87a1d | 371 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 372 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
373 | |
374 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
375 | HOWTO (R_PPC64_REL24, /* type */ | |
376 | 0, /* rightshift */ | |
377 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
378 | 26, /* bitsize */ | |
b34976b6 | 379 | TRUE, /* pc_relative */ |
5bd4f169 AM |
380 | 0, /* bitpos */ |
381 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 382 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 383 | "R_PPC64_REL24", /* name */ |
b34976b6 | 384 | FALSE, /* partial_inplace */ |
d006db6c | 385 | 0, /* src_mask */ |
f5e87a1d | 386 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 387 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
388 | |
389 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
390 | HOWTO (R_PPC64_REL14, /* type */ | |
391 | 0, /* rightshift */ | |
392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 16, /* bitsize */ | |
b34976b6 | 394 | TRUE, /* pc_relative */ |
5bd4f169 AM |
395 | 0, /* bitpos */ |
396 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 397 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 398 | "R_PPC64_REL14", /* name */ |
b34976b6 | 399 | FALSE, /* partial_inplace */ |
d006db6c | 400 | 0, /* src_mask */ |
f5e87a1d | 401 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 402 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
403 | |
404 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
405 | the branch is expected to be taken. The lower two bits must be | |
406 | zero. */ | |
407 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
408 | 0, /* rightshift */ | |
409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
410 | 16, /* bitsize */ | |
b34976b6 | 411 | TRUE, /* pc_relative */ |
5bd4f169 AM |
412 | 0, /* bitpos */ |
413 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 414 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 415 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 416 | FALSE, /* partial_inplace */ |
d006db6c | 417 | 0, /* src_mask */ |
f5e87a1d | 418 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 419 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
420 | |
421 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
422 | the branch is not expected to be taken. The lower two bits must | |
423 | be zero. */ | |
424 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
427 | 16, /* bitsize */ | |
b34976b6 | 428 | TRUE, /* pc_relative */ |
5bd4f169 AM |
429 | 0, /* bitpos */ |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 431 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 432 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 433 | FALSE, /* partial_inplace */ |
d006db6c | 434 | 0, /* src_mask */ |
f5e87a1d | 435 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 436 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
437 | |
438 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
439 | symbol. */ | |
440 | HOWTO (R_PPC64_GOT16, /* type */ | |
441 | 0, /* rightshift */ | |
442 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
443 | 16, /* bitsize */ | |
b34976b6 | 444 | FALSE, /* pc_relative */ |
5bd4f169 AM |
445 | 0, /* bitpos */ |
446 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 447 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 448 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 449 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
450 | 0, /* src_mask */ |
451 | 0xffff, /* dst_mask */ | |
b34976b6 | 452 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
453 | |
454 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
455 | the symbol. */ | |
456 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
457 | 0, /* rightshift */ | |
458 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
459 | 16, /* bitsize */ | |
b34976b6 | 460 | FALSE, /* pc_relative */ |
5bd4f169 AM |
461 | 0, /* bitpos */ |
462 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 463 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 464 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 465 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
466 | 0, /* src_mask */ |
467 | 0xffff, /* dst_mask */ | |
b34976b6 | 468 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
469 | |
470 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
471 | the symbol. */ | |
472 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
473 | 16, /* rightshift */ | |
474 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
475 | 16, /* bitsize */ | |
b34976b6 | 476 | FALSE, /* pc_relative */ |
5bd4f169 AM |
477 | 0, /* bitpos */ |
478 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 479 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 480 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 481 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
482 | 0, /* src_mask */ |
483 | 0xffff, /* dst_mask */ | |
b34976b6 | 484 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
485 | |
486 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
487 | the symbol. */ | |
488 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
489 | 16, /* rightshift */ | |
490 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
491 | 16, /* bitsize */ | |
b34976b6 | 492 | FALSE, /* pc_relative */ |
5bd4f169 AM |
493 | 0, /* bitpos */ |
494 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 495 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 496 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 497 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
498 | 0, /* src_mask */ |
499 | 0xffff, /* dst_mask */ | |
b34976b6 | 500 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
501 | |
502 | /* This is used only by the dynamic linker. The symbol should exist | |
503 | both in the object being run and in some shared library. The | |
504 | dynamic linker copies the data addressed by the symbol from the | |
505 | shared library into the object, because the object being | |
506 | run has to have the data at some particular address. */ | |
507 | HOWTO (R_PPC64_COPY, /* type */ | |
508 | 0, /* rightshift */ | |
f5e87a1d AM |
509 | 0, /* this one is variable size */ |
510 | 0, /* bitsize */ | |
b34976b6 | 511 | FALSE, /* pc_relative */ |
5bd4f169 | 512 | 0, /* bitpos */ |
f5e87a1d AM |
513 | complain_overflow_dont, /* complain_on_overflow */ |
514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 515 | "R_PPC64_COPY", /* name */ |
b34976b6 | 516 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
517 | 0, /* src_mask */ |
518 | 0, /* dst_mask */ | |
b34976b6 | 519 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
520 | |
521 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
522 | entries. */ | |
523 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
524 | 0, /* rightshift */ | |
525 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
526 | 64, /* bitsize */ | |
b34976b6 | 527 | FALSE, /* pc_relative */ |
5bd4f169 AM |
528 | 0, /* bitpos */ |
529 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 530 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 531 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 532 | FALSE, /* partial_inplace */ |
5bd4f169 | 533 | 0, /* src_mask */ |
f5e87a1d | 534 | ONES (64), /* dst_mask */ |
b34976b6 | 535 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
536 | |
537 | /* Created by the link editor. Marks a procedure linkage table | |
538 | entry for a symbol. */ | |
539 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
540 | 0, /* rightshift */ | |
541 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
542 | 0, /* bitsize */ | |
b34976b6 | 543 | FALSE, /* pc_relative */ |
5bd4f169 AM |
544 | 0, /* bitpos */ |
545 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 547 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 548 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
549 | 0, /* src_mask */ |
550 | 0, /* dst_mask */ | |
b34976b6 | 551 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
552 | |
553 | /* Used only by the dynamic linker. When the object is run, this | |
554 | doubleword64 is set to the load address of the object, plus the | |
555 | addend. */ | |
556 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
557 | 0, /* rightshift */ | |
558 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
559 | 64, /* bitsize */ | |
b34976b6 | 560 | FALSE, /* pc_relative */ |
5bd4f169 AM |
561 | 0, /* bitpos */ |
562 | complain_overflow_dont, /* complain_on_overflow */ | |
563 | bfd_elf_generic_reloc, /* special_function */ | |
564 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 565 | FALSE, /* partial_inplace */ |
5bd4f169 | 566 | 0, /* src_mask */ |
f5e87a1d | 567 | ONES (64), /* dst_mask */ |
b34976b6 | 568 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
569 | |
570 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
571 | HOWTO (R_PPC64_UADDR32, /* type */ | |
572 | 0, /* rightshift */ | |
573 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
574 | 32, /* bitsize */ | |
b34976b6 | 575 | FALSE, /* pc_relative */ |
5bd4f169 AM |
576 | 0, /* bitpos */ |
577 | complain_overflow_bitfield, /* complain_on_overflow */ | |
578 | bfd_elf_generic_reloc, /* special_function */ | |
579 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 580 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
581 | 0, /* src_mask */ |
582 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 583 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
584 | |
585 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
586 | HOWTO (R_PPC64_UADDR16, /* type */ | |
587 | 0, /* rightshift */ | |
588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
589 | 16, /* bitsize */ | |
b34976b6 | 590 | FALSE, /* pc_relative */ |
5bd4f169 AM |
591 | 0, /* bitpos */ |
592 | complain_overflow_bitfield, /* complain_on_overflow */ | |
593 | bfd_elf_generic_reloc, /* special_function */ | |
594 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 595 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
596 | 0, /* src_mask */ |
597 | 0xffff, /* dst_mask */ | |
b34976b6 | 598 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
599 | |
600 | /* 32-bit PC relative. */ | |
601 | HOWTO (R_PPC64_REL32, /* type */ | |
602 | 0, /* rightshift */ | |
603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
604 | 32, /* bitsize */ | |
b34976b6 | 605 | TRUE, /* pc_relative */ |
5bd4f169 | 606 | 0, /* bitpos */ |
cedb70c5 | 607 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
608 | complain_overflow_signed, /* complain_on_overflow */ |
609 | bfd_elf_generic_reloc, /* special_function */ | |
610 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 611 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
612 | 0, /* src_mask */ |
613 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 614 | TRUE), /* pcrel_offset */ |
5bd4f169 | 615 | |
10ed1bba | 616 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
617 | HOWTO (R_PPC64_PLT32, /* type */ |
618 | 0, /* rightshift */ | |
619 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
620 | 32, /* bitsize */ | |
b34976b6 | 621 | FALSE, /* pc_relative */ |
5bd4f169 AM |
622 | 0, /* bitpos */ |
623 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 624 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 625 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 626 | FALSE, /* partial_inplace */ |
5bd4f169 | 627 | 0, /* src_mask */ |
f5e87a1d | 628 | 0xffffffff, /* dst_mask */ |
b34976b6 | 629 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
630 | |
631 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
632 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
633 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 32, /* bitsize */ | |
b34976b6 | 637 | TRUE, /* pc_relative */ |
5bd4f169 AM |
638 | 0, /* bitpos */ |
639 | complain_overflow_signed, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 642 | FALSE, /* partial_inplace */ |
5bd4f169 | 643 | 0, /* src_mask */ |
f5e87a1d | 644 | 0xffffffff, /* dst_mask */ |
b34976b6 | 645 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
646 | |
647 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
648 | the symbol. */ | |
649 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
650 | 0, /* rightshift */ | |
651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
652 | 16, /* bitsize */ | |
b34976b6 | 653 | FALSE, /* pc_relative */ |
5bd4f169 AM |
654 | 0, /* bitpos */ |
655 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 656 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 657 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 658 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
659 | 0, /* src_mask */ |
660 | 0xffff, /* dst_mask */ | |
b34976b6 | 661 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
662 | |
663 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
664 | the symbol. */ | |
665 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
666 | 16, /* rightshift */ | |
667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
668 | 16, /* bitsize */ | |
b34976b6 | 669 | FALSE, /* pc_relative */ |
5bd4f169 AM |
670 | 0, /* bitpos */ |
671 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 672 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 673 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 674 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
675 | 0, /* src_mask */ |
676 | 0xffff, /* dst_mask */ | |
b34976b6 | 677 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
678 | |
679 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
680 | the symbol. */ | |
681 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
682 | 16, /* rightshift */ | |
683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
684 | 16, /* bitsize */ | |
b34976b6 | 685 | FALSE, /* pc_relative */ |
5bd4f169 AM |
686 | 0, /* bitpos */ |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 688 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 689 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 690 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
691 | 0, /* src_mask */ |
692 | 0xffff, /* dst_mask */ | |
b34976b6 | 693 | FALSE), /* pcrel_offset */ |
5bd4f169 | 694 | |
c061c2d8 | 695 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
696 | HOWTO (R_PPC64_SECTOFF, /* type */ |
697 | 0, /* rightshift */ | |
c061c2d8 AM |
698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
699 | 16, /* bitsize */ | |
b34976b6 | 700 | FALSE, /* pc_relative */ |
5bd4f169 AM |
701 | 0, /* bitpos */ |
702 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 703 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 704 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 705 | FALSE, /* partial_inplace */ |
5bd4f169 | 706 | 0, /* src_mask */ |
c061c2d8 | 707 | 0xffff, /* dst_mask */ |
b34976b6 | 708 | FALSE), /* pcrel_offset */ |
5bd4f169 | 709 | |
c061c2d8 | 710 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
711 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
712 | 0, /* rightshift */ | |
713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
714 | 16, /* bitsize */ | |
b34976b6 | 715 | FALSE, /* pc_relative */ |
5bd4f169 AM |
716 | 0, /* bitpos */ |
717 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 718 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 719 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 720 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
721 | 0, /* src_mask */ |
722 | 0xffff, /* dst_mask */ | |
b34976b6 | 723 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
724 | |
725 | /* 16-bit upper half section relative relocation. */ | |
726 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
727 | 16, /* rightshift */ | |
728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
729 | 16, /* bitsize */ | |
b34976b6 | 730 | FALSE, /* pc_relative */ |
5bd4f169 AM |
731 | 0, /* bitpos */ |
732 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 733 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 734 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 735 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
736 | 0, /* src_mask */ |
737 | 0xffff, /* dst_mask */ | |
b34976b6 | 738 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
739 | |
740 | /* 16-bit upper half adjusted section relative relocation. */ | |
741 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
742 | 16, /* rightshift */ | |
743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
744 | 16, /* bitsize */ | |
b34976b6 | 745 | FALSE, /* pc_relative */ |
5bd4f169 AM |
746 | 0, /* bitpos */ |
747 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 748 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 749 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 750 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
751 | 0, /* src_mask */ |
752 | 0xffff, /* dst_mask */ | |
b34976b6 | 753 | FALSE), /* pcrel_offset */ |
5bd4f169 | 754 | |
04c9666a AM |
755 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
756 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
757 | 2, /* rightshift */ |
758 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
759 | 30, /* bitsize */ | |
b34976b6 | 760 | TRUE, /* pc_relative */ |
5bd4f169 AM |
761 | 0, /* bitpos */ |
762 | complain_overflow_dont, /* complain_on_overflow */ | |
763 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 764 | "R_PPC64_REL30", /* name */ |
b34976b6 | 765 | FALSE, /* partial_inplace */ |
d006db6c | 766 | 0, /* src_mask */ |
5bd4f169 | 767 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 768 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
769 | |
770 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
771 | ||
772 | /* A standard 64-bit relocation. */ | |
773 | HOWTO (R_PPC64_ADDR64, /* type */ | |
774 | 0, /* rightshift */ | |
775 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
776 | 64, /* bitsize */ | |
b34976b6 | 777 | FALSE, /* pc_relative */ |
5bd4f169 AM |
778 | 0, /* bitpos */ |
779 | complain_overflow_dont, /* complain_on_overflow */ | |
780 | bfd_elf_generic_reloc, /* special_function */ | |
781 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 782 | FALSE, /* partial_inplace */ |
5bd4f169 | 783 | 0, /* src_mask */ |
f5e87a1d | 784 | ONES (64), /* dst_mask */ |
b34976b6 | 785 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
786 | |
787 | /* The bits 32-47 of an address. */ | |
788 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
789 | 32, /* rightshift */ | |
790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
791 | 16, /* bitsize */ | |
b34976b6 | 792 | FALSE, /* pc_relative */ |
5bd4f169 AM |
793 | 0, /* bitpos */ |
794 | complain_overflow_dont, /* complain_on_overflow */ | |
795 | bfd_elf_generic_reloc, /* special_function */ | |
796 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 797 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
798 | 0, /* src_mask */ |
799 | 0xffff, /* dst_mask */ | |
b34976b6 | 800 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
801 | |
802 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
803 | 16 bits, treated as a signed number, is negative. */ | |
804 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
805 | 32, /* rightshift */ | |
806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
807 | 16, /* bitsize */ | |
b34976b6 | 808 | FALSE, /* pc_relative */ |
5bd4f169 AM |
809 | 0, /* bitpos */ |
810 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 811 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 812 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 813 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
814 | 0, /* src_mask */ |
815 | 0xffff, /* dst_mask */ | |
b34976b6 | 816 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
817 | |
818 | /* The bits 48-63 of an address. */ | |
819 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
820 | 48, /* rightshift */ | |
821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
822 | 16, /* bitsize */ | |
b34976b6 | 823 | FALSE, /* pc_relative */ |
5bd4f169 AM |
824 | 0, /* bitpos */ |
825 | complain_overflow_dont, /* complain_on_overflow */ | |
826 | bfd_elf_generic_reloc, /* special_function */ | |
827 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 828 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
829 | 0, /* src_mask */ |
830 | 0xffff, /* dst_mask */ | |
b34976b6 | 831 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
832 | |
833 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
834 | 16 bits, treated as a signed number, is negative. */ | |
835 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
836 | 48, /* rightshift */ | |
837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
838 | 16, /* bitsize */ | |
b34976b6 | 839 | FALSE, /* pc_relative */ |
5bd4f169 AM |
840 | 0, /* bitpos */ |
841 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 842 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 843 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 844 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
845 | 0, /* src_mask */ |
846 | 0xffff, /* dst_mask */ | |
b34976b6 | 847 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
848 | |
849 | /* Like ADDR64, but may be unaligned. */ | |
850 | HOWTO (R_PPC64_UADDR64, /* type */ | |
851 | 0, /* rightshift */ | |
852 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
853 | 64, /* bitsize */ | |
b34976b6 | 854 | FALSE, /* pc_relative */ |
5bd4f169 AM |
855 | 0, /* bitpos */ |
856 | complain_overflow_dont, /* complain_on_overflow */ | |
857 | bfd_elf_generic_reloc, /* special_function */ | |
858 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 859 | FALSE, /* partial_inplace */ |
5bd4f169 | 860 | 0, /* src_mask */ |
f5e87a1d | 861 | ONES (64), /* dst_mask */ |
b34976b6 | 862 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
863 | |
864 | /* 64-bit relative relocation. */ | |
865 | HOWTO (R_PPC64_REL64, /* type */ | |
866 | 0, /* rightshift */ | |
867 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
868 | 64, /* bitsize */ | |
b34976b6 | 869 | TRUE, /* pc_relative */ |
5bd4f169 AM |
870 | 0, /* bitpos */ |
871 | complain_overflow_dont, /* complain_on_overflow */ | |
872 | bfd_elf_generic_reloc, /* special_function */ | |
873 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 874 | FALSE, /* partial_inplace */ |
5bd4f169 | 875 | 0, /* src_mask */ |
f5e87a1d | 876 | ONES (64), /* dst_mask */ |
b34976b6 | 877 | TRUE), /* pcrel_offset */ |
5bd4f169 | 878 | |
cedb70c5 | 879 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
880 | HOWTO (R_PPC64_PLT64, /* type */ |
881 | 0, /* rightshift */ | |
882 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
883 | 64, /* bitsize */ | |
b34976b6 | 884 | FALSE, /* pc_relative */ |
5bd4f169 AM |
885 | 0, /* bitpos */ |
886 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 887 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 888 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 889 | FALSE, /* partial_inplace */ |
5bd4f169 | 890 | 0, /* src_mask */ |
f5e87a1d | 891 | ONES (64), /* dst_mask */ |
b34976b6 | 892 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
893 | |
894 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
895 | table. */ | |
896 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
897 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
898 | 0, /* rightshift */ | |
899 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
900 | 64, /* bitsize */ | |
b34976b6 | 901 | TRUE, /* pc_relative */ |
5bd4f169 AM |
902 | 0, /* bitpos */ |
903 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 904 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 905 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 906 | FALSE, /* partial_inplace */ |
5bd4f169 | 907 | 0, /* src_mask */ |
f5e87a1d | 908 | ONES (64), /* dst_mask */ |
b34976b6 | 909 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
910 | |
911 | /* 16 bit TOC-relative relocation. */ | |
912 | ||
913 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
914 | HOWTO (R_PPC64_TOC16, /* type */ | |
915 | 0, /* rightshift */ | |
916 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 16, /* bitsize */ | |
b34976b6 | 918 | FALSE, /* pc_relative */ |
5bd4f169 AM |
919 | 0, /* bitpos */ |
920 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 921 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 922 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 923 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
924 | 0, /* src_mask */ |
925 | 0xffff, /* dst_mask */ | |
b34976b6 | 926 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
927 | |
928 | /* 16 bit TOC-relative relocation without overflow. */ | |
929 | ||
930 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
931 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
932 | 0, /* rightshift */ | |
933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
934 | 16, /* bitsize */ | |
b34976b6 | 935 | FALSE, /* pc_relative */ |
5bd4f169 AM |
936 | 0, /* bitpos */ |
937 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 938 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 939 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 940 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
941 | 0, /* src_mask */ |
942 | 0xffff, /* dst_mask */ | |
b34976b6 | 943 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
944 | |
945 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
946 | ||
947 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
948 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
949 | 16, /* rightshift */ | |
950 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
951 | 16, /* bitsize */ | |
b34976b6 | 952 | FALSE, /* pc_relative */ |
5bd4f169 AM |
953 | 0, /* bitpos */ |
954 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 955 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 956 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 957 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
958 | 0, /* src_mask */ |
959 | 0xffff, /* dst_mask */ | |
b34976b6 | 960 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
961 | |
962 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
963 | contents of the low 16 bits, treated as a signed number, is | |
964 | negative. */ | |
965 | ||
966 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
967 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
968 | 16, /* rightshift */ | |
969 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
970 | 16, /* bitsize */ | |
b34976b6 | 971 | FALSE, /* pc_relative */ |
5bd4f169 AM |
972 | 0, /* bitpos */ |
973 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 974 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 975 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 976 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
977 | 0, /* src_mask */ |
978 | 0xffff, /* dst_mask */ | |
b34976b6 | 979 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
980 | |
981 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
982 | ||
983 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
984 | HOWTO (R_PPC64_TOC, /* type */ | |
985 | 0, /* rightshift */ | |
986 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
987 | 64, /* bitsize */ | |
b34976b6 | 988 | FALSE, /* pc_relative */ |
5bd4f169 AM |
989 | 0, /* bitpos */ |
990 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 991 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 992 | "R_PPC64_TOC", /* name */ |
b34976b6 | 993 | FALSE, /* partial_inplace */ |
5bd4f169 | 994 | 0, /* src_mask */ |
f5e87a1d | 995 | ONES (64), /* dst_mask */ |
b34976b6 | 996 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
997 | |
998 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
999 | value to relocate may (!) refer to a PLT entry which the link | |
1000 | editor (a) may replace with the symbol value. If the link editor | |
1001 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1002 | entry and store the address to the new PLT entry in the GOT. | |
1003 | This permits lazy resolution of function symbols at run time. | |
1004 | The link editor may also skip all of this and just (c) emit a | |
1005 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1006 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1007 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1008 | 0, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1012 | 0, /* bitpos */ |
1013 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1014 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1015 | "R_PPC64_PLTGOT16", /* name */ |
1016 | FALSE, /* partial_inplace */ | |
1017 | 0, /* src_mask */ | |
1018 | 0xffff, /* dst_mask */ | |
1019 | FALSE), /* pcrel_offset */ | |
1020 | ||
1021 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1022 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1023 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1024 | 0, /* rightshift */ | |
1025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1026 | 16, /* bitsize */ | |
1027 | FALSE, /* pc_relative */ | |
1028 | 0, /* bitpos */ | |
1029 | complain_overflow_dont, /* complain_on_overflow */ | |
1030 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1031 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1032 | FALSE, /* partial_inplace */ | |
1033 | 0, /* src_mask */ | |
1034 | 0xffff, /* dst_mask */ | |
1035 | FALSE), /* pcrel_offset */ | |
1036 | ||
1037 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1038 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1039 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1040 | 16, /* rightshift */ | |
1041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1042 | 16, /* bitsize */ | |
1043 | FALSE, /* pc_relative */ | |
1044 | 0, /* bitpos */ | |
1045 | complain_overflow_dont, /* complain_on_overflow */ | |
1046 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1047 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1048 | FALSE, /* partial_inplace */ | |
1049 | 0, /* src_mask */ | |
1050 | 0xffff, /* dst_mask */ | |
1051 | FALSE), /* pcrel_offset */ | |
1052 | ||
1053 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1054 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1055 | is negative. */ | |
1056 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1057 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1058 | 16, /* rightshift */ | |
1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1060 | 16, /* bitsize */ | |
1061 | FALSE, /* pc_relative */ | |
1062 | 0, /* bitpos */ | |
1063 | complain_overflow_dont,/* complain_on_overflow */ | |
1064 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1065 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1066 | FALSE, /* partial_inplace */ | |
1067 | 0, /* src_mask */ | |
1068 | 0xffff, /* dst_mask */ | |
1069 | FALSE), /* pcrel_offset */ | |
1070 | ||
1071 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1072 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1073 | 0, /* rightshift */ | |
1074 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1075 | 16, /* bitsize */ | |
1076 | FALSE, /* pc_relative */ | |
1077 | 0, /* bitpos */ | |
1078 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1079 | bfd_elf_generic_reloc, /* special_function */ | |
1080 | "R_PPC64_ADDR16_DS", /* name */ | |
1081 | FALSE, /* partial_inplace */ | |
1082 | 0, /* src_mask */ | |
1083 | 0xfffc, /* dst_mask */ | |
1084 | FALSE), /* pcrel_offset */ | |
1085 | ||
1086 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1087 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1088 | 0, /* rightshift */ | |
1089 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1090 | 16, /* bitsize */ | |
1091 | FALSE, /* pc_relative */ | |
1092 | 0, /* bitpos */ | |
1093 | complain_overflow_dont,/* complain_on_overflow */ | |
1094 | bfd_elf_generic_reloc, /* special_function */ | |
1095 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1096 | FALSE, /* partial_inplace */ | |
1097 | 0, /* src_mask */ | |
1098 | 0xfffc, /* dst_mask */ | |
1099 | FALSE), /* pcrel_offset */ | |
1100 | ||
1101 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1102 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1103 | 0, /* rightshift */ | |
1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 16, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_signed, /* complain_on_overflow */ | |
1109 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1110 | "R_PPC64_GOT16_DS", /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0, /* src_mask */ | |
1113 | 0xfffc, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1117 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1118 | 0, /* rightshift */ | |
1119 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 16, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont, /* complain_on_overflow */ | |
1124 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1125 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0, /* src_mask */ | |
1128 | 0xfffc, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
1130 | ||
1131 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1132 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1133 | 0, /* rightshift */ | |
1134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 16, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_dont, /* complain_on_overflow */ | |
1139 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1140 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0, /* src_mask */ | |
1143 | 0xfffc, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
1145 | ||
1146 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1147 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 16, /* bitsize */ | |
1151 | FALSE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1154 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1155 | "R_PPC64_SECTOFF_DS", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0, /* src_mask */ | |
1158 | 0xfffc, /* dst_mask */ | |
1159 | FALSE), /* pcrel_offset */ | |
1160 | ||
1161 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1162 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1163 | 0, /* rightshift */ | |
1164 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1165 | 16, /* bitsize */ | |
1166 | FALSE, /* pc_relative */ | |
1167 | 0, /* bitpos */ | |
1168 | complain_overflow_dont, /* complain_on_overflow */ | |
1169 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1170 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1171 | FALSE, /* partial_inplace */ | |
1172 | 0, /* src_mask */ | |
1173 | 0xfffc, /* dst_mask */ | |
1174 | FALSE), /* pcrel_offset */ | |
1175 | ||
1176 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1177 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1178 | 0, /* rightshift */ | |
1179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 16, /* bitsize */ | |
1181 | FALSE, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_signed, /* complain_on_overflow */ | |
1184 | ppc64_elf_toc_reloc, /* special_function */ | |
1185 | "R_PPC64_TOC16_DS", /* name */ | |
1186 | FALSE, /* partial_inplace */ | |
1187 | 0, /* src_mask */ | |
1188 | 0xfffc, /* dst_mask */ | |
1189 | FALSE), /* pcrel_offset */ | |
1190 | ||
1191 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1192 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1193 | 0, /* rightshift */ | |
1194 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 16, /* bitsize */ | |
1196 | FALSE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_dont, /* complain_on_overflow */ | |
1199 | ppc64_elf_toc_reloc, /* special_function */ | |
1200 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0, /* src_mask */ | |
1203 | 0xfffc, /* dst_mask */ | |
1204 | FALSE), /* pcrel_offset */ | |
1205 | ||
1206 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1207 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1208 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1209 | 0, /* rightshift */ |
1210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 16, /* bitsize */ | |
1212 | FALSE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_signed, /* complain_on_overflow */ | |
1215 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1216 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0, /* src_mask */ | |
1219 | 0xfffc, /* dst_mask */ | |
1220 | FALSE), /* pcrel_offset */ | |
1221 | ||
1222 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1223 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1224 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1225 | 0, /* rightshift */ | |
1226 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1227 | 16, /* bitsize */ | |
1228 | FALSE, /* pc_relative */ | |
1229 | 0, /* bitpos */ | |
1230 | complain_overflow_dont, /* complain_on_overflow */ | |
1231 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1232 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1233 | FALSE, /* partial_inplace */ | |
1234 | 0, /* src_mask */ | |
1235 | 0xfffc, /* dst_mask */ | |
1236 | FALSE), /* pcrel_offset */ | |
1237 | ||
727fc41e | 1238 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1239 | HOWTO (R_PPC64_TLS, |
1240 | 0, /* rightshift */ | |
1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1242 | 32, /* bitsize */ | |
1243 | FALSE, /* pc_relative */ | |
1244 | 0, /* bitpos */ | |
1245 | complain_overflow_dont, /* complain_on_overflow */ | |
1246 | bfd_elf_generic_reloc, /* special_function */ | |
1247 | "R_PPC64_TLS", /* name */ | |
1248 | FALSE, /* partial_inplace */ | |
1249 | 0, /* src_mask */ | |
1250 | 0, /* dst_mask */ | |
1251 | FALSE), /* pcrel_offset */ | |
1252 | ||
727fc41e AM |
1253 | HOWTO (R_PPC64_TLSGD, |
1254 | 0, /* rightshift */ | |
1255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1256 | 32, /* bitsize */ | |
1257 | FALSE, /* pc_relative */ | |
1258 | 0, /* bitpos */ | |
1259 | complain_overflow_dont, /* complain_on_overflow */ | |
1260 | bfd_elf_generic_reloc, /* special_function */ | |
1261 | "R_PPC64_TLSGD", /* name */ | |
1262 | FALSE, /* partial_inplace */ | |
1263 | 0, /* src_mask */ | |
1264 | 0, /* dst_mask */ | |
1265 | FALSE), /* pcrel_offset */ | |
1266 | ||
1267 | HOWTO (R_PPC64_TLSLD, | |
1268 | 0, /* rightshift */ | |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 32, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont, /* complain_on_overflow */ | |
1274 | bfd_elf_generic_reloc, /* special_function */ | |
1275 | "R_PPC64_TLSLD", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | 0, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
411e1bfb AM |
1281 | /* Computes the load module index of the load module that contains the |
1282 | definition of its TLS sym. */ | |
1283 | HOWTO (R_PPC64_DTPMOD64, | |
1284 | 0, /* rightshift */ | |
1285 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 64, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont, /* complain_on_overflow */ | |
1290 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1291 | "R_PPC64_DTPMOD64", /* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0, /* src_mask */ | |
1294 | ONES (64), /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
1297 | /* Computes a dtv-relative displacement, the difference between the value | |
1298 | of sym+add and the base address of the thread-local storage block that | |
1299 | contains the definition of sym, minus 0x8000. */ | |
1300 | HOWTO (R_PPC64_DTPREL64, | |
1301 | 0, /* rightshift */ | |
1302 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1303 | 64, /* bitsize */ | |
1304 | FALSE, /* pc_relative */ | |
1305 | 0, /* bitpos */ | |
1306 | complain_overflow_dont, /* complain_on_overflow */ | |
1307 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1308 | "R_PPC64_DTPREL64", /* name */ | |
1309 | FALSE, /* partial_inplace */ | |
1310 | 0, /* src_mask */ | |
1311 | ONES (64), /* dst_mask */ | |
1312 | FALSE), /* pcrel_offset */ | |
1313 | ||
1314 | /* A 16 bit dtprel reloc. */ | |
1315 | HOWTO (R_PPC64_DTPREL16, | |
1316 | 0, /* rightshift */ | |
1317 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1318 | 16, /* bitsize */ | |
1319 | FALSE, /* pc_relative */ | |
1320 | 0, /* bitpos */ | |
1321 | complain_overflow_signed, /* complain_on_overflow */ | |
1322 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1323 | "R_PPC64_DTPREL16", /* name */ | |
1324 | FALSE, /* partial_inplace */ | |
1325 | 0, /* src_mask */ | |
1326 | 0xffff, /* dst_mask */ | |
1327 | FALSE), /* pcrel_offset */ | |
1328 | ||
1329 | /* Like DTPREL16, but no overflow. */ | |
1330 | HOWTO (R_PPC64_DTPREL16_LO, | |
1331 | 0, /* rightshift */ | |
1332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1333 | 16, /* bitsize */ | |
1334 | FALSE, /* pc_relative */ | |
1335 | 0, /* bitpos */ | |
1336 | complain_overflow_dont, /* complain_on_overflow */ | |
1337 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1338 | "R_PPC64_DTPREL16_LO", /* name */ | |
1339 | FALSE, /* partial_inplace */ | |
1340 | 0, /* src_mask */ | |
1341 | 0xffff, /* dst_mask */ | |
1342 | FALSE), /* pcrel_offset */ | |
1343 | ||
1344 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1345 | HOWTO (R_PPC64_DTPREL16_HI, | |
1346 | 16, /* rightshift */ | |
1347 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1348 | 16, /* bitsize */ | |
1349 | FALSE, /* pc_relative */ | |
1350 | 0, /* bitpos */ | |
1351 | complain_overflow_dont, /* complain_on_overflow */ | |
1352 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1353 | "R_PPC64_DTPREL16_HI", /* name */ | |
1354 | FALSE, /* partial_inplace */ | |
1355 | 0, /* src_mask */ | |
1356 | 0xffff, /* dst_mask */ | |
1357 | FALSE), /* pcrel_offset */ | |
1358 | ||
1359 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1360 | HOWTO (R_PPC64_DTPREL16_HA, | |
1361 | 16, /* rightshift */ | |
1362 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1363 | 16, /* bitsize */ | |
1364 | FALSE, /* pc_relative */ | |
1365 | 0, /* bitpos */ | |
1366 | complain_overflow_dont, /* complain_on_overflow */ | |
1367 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1368 | "R_PPC64_DTPREL16_HA", /* name */ | |
1369 | FALSE, /* partial_inplace */ | |
1370 | 0, /* src_mask */ | |
1371 | 0xffff, /* dst_mask */ | |
1372 | FALSE), /* pcrel_offset */ | |
1373 | ||
1374 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1375 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1376 | 32, /* rightshift */ | |
1377 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1378 | 16, /* bitsize */ | |
1379 | FALSE, /* pc_relative */ | |
1380 | 0, /* bitpos */ | |
1381 | complain_overflow_dont, /* complain_on_overflow */ | |
1382 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1383 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1384 | FALSE, /* partial_inplace */ | |
1385 | 0, /* src_mask */ | |
1386 | 0xffff, /* dst_mask */ | |
1387 | FALSE), /* pcrel_offset */ | |
1388 | ||
1389 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1390 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1391 | 32, /* rightshift */ | |
1392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1393 | 16, /* bitsize */ | |
1394 | FALSE, /* pc_relative */ | |
1395 | 0, /* bitpos */ | |
1396 | complain_overflow_dont, /* complain_on_overflow */ | |
1397 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1398 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1399 | FALSE, /* partial_inplace */ | |
1400 | 0, /* src_mask */ | |
1401 | 0xffff, /* dst_mask */ | |
1402 | FALSE), /* pcrel_offset */ | |
1403 | ||
1404 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1405 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1406 | 48, /* rightshift */ | |
1407 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1408 | 16, /* bitsize */ | |
1409 | FALSE, /* pc_relative */ | |
1410 | 0, /* bitpos */ | |
1411 | complain_overflow_dont, /* complain_on_overflow */ | |
1412 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1413 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1414 | FALSE, /* partial_inplace */ | |
1415 | 0, /* src_mask */ | |
1416 | 0xffff, /* dst_mask */ | |
1417 | FALSE), /* pcrel_offset */ | |
1418 | ||
1419 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1420 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1421 | 48, /* rightshift */ | |
1422 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1423 | 16, /* bitsize */ | |
1424 | FALSE, /* pc_relative */ | |
1425 | 0, /* bitpos */ | |
1426 | complain_overflow_dont, /* complain_on_overflow */ | |
1427 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1428 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1429 | FALSE, /* partial_inplace */ | |
1430 | 0, /* src_mask */ | |
1431 | 0xffff, /* dst_mask */ | |
1432 | FALSE), /* pcrel_offset */ | |
1433 | ||
1434 | /* Like DTPREL16, but for insns with a DS field. */ | |
1435 | HOWTO (R_PPC64_DTPREL16_DS, | |
1436 | 0, /* rightshift */ | |
1437 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1438 | 16, /* bitsize */ | |
1439 | FALSE, /* pc_relative */ | |
1440 | 0, /* bitpos */ | |
1441 | complain_overflow_signed, /* complain_on_overflow */ | |
1442 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1443 | "R_PPC64_DTPREL16_DS", /* name */ | |
1444 | FALSE, /* partial_inplace */ | |
1445 | 0, /* src_mask */ | |
1446 | 0xfffc, /* dst_mask */ | |
1447 | FALSE), /* pcrel_offset */ | |
1448 | ||
1449 | /* Like DTPREL16_DS, but no overflow. */ | |
1450 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1451 | 0, /* rightshift */ | |
1452 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1453 | 16, /* bitsize */ | |
1454 | FALSE, /* pc_relative */ | |
1455 | 0, /* bitpos */ | |
1456 | complain_overflow_dont, /* complain_on_overflow */ | |
1457 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1458 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1459 | FALSE, /* partial_inplace */ | |
1460 | 0, /* src_mask */ | |
1461 | 0xfffc, /* dst_mask */ | |
1462 | FALSE), /* pcrel_offset */ | |
1463 | ||
1464 | /* Computes a tp-relative displacement, the difference between the value of | |
1465 | sym+add and the value of the thread pointer (r13). */ | |
1466 | HOWTO (R_PPC64_TPREL64, | |
1467 | 0, /* rightshift */ | |
1468 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1469 | 64, /* bitsize */ | |
1470 | FALSE, /* pc_relative */ | |
1471 | 0, /* bitpos */ | |
1472 | complain_overflow_dont, /* complain_on_overflow */ | |
1473 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1474 | "R_PPC64_TPREL64", /* name */ | |
1475 | FALSE, /* partial_inplace */ | |
1476 | 0, /* src_mask */ | |
1477 | ONES (64), /* dst_mask */ | |
1478 | FALSE), /* pcrel_offset */ | |
1479 | ||
1480 | /* A 16 bit tprel reloc. */ | |
1481 | HOWTO (R_PPC64_TPREL16, | |
1482 | 0, /* rightshift */ | |
1483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1484 | 16, /* bitsize */ | |
1485 | FALSE, /* pc_relative */ | |
1486 | 0, /* bitpos */ | |
1487 | complain_overflow_signed, /* complain_on_overflow */ | |
1488 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1489 | "R_PPC64_TPREL16", /* name */ | |
1490 | FALSE, /* partial_inplace */ | |
1491 | 0, /* src_mask */ | |
1492 | 0xffff, /* dst_mask */ | |
1493 | FALSE), /* pcrel_offset */ | |
1494 | ||
1495 | /* Like TPREL16, but no overflow. */ | |
1496 | HOWTO (R_PPC64_TPREL16_LO, | |
1497 | 0, /* rightshift */ | |
1498 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1499 | 16, /* bitsize */ | |
1500 | FALSE, /* pc_relative */ | |
1501 | 0, /* bitpos */ | |
1502 | complain_overflow_dont, /* complain_on_overflow */ | |
1503 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1504 | "R_PPC64_TPREL16_LO", /* name */ | |
1505 | FALSE, /* partial_inplace */ | |
1506 | 0, /* src_mask */ | |
1507 | 0xffff, /* dst_mask */ | |
1508 | FALSE), /* pcrel_offset */ | |
1509 | ||
1510 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1511 | HOWTO (R_PPC64_TPREL16_HI, | |
1512 | 16, /* rightshift */ | |
1513 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1514 | 16, /* bitsize */ | |
1515 | FALSE, /* pc_relative */ | |
1516 | 0, /* bitpos */ | |
1517 | complain_overflow_dont, /* complain_on_overflow */ | |
1518 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1519 | "R_PPC64_TPREL16_HI", /* name */ | |
1520 | FALSE, /* partial_inplace */ | |
1521 | 0, /* src_mask */ | |
1522 | 0xffff, /* dst_mask */ | |
1523 | FALSE), /* pcrel_offset */ | |
1524 | ||
1525 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1526 | HOWTO (R_PPC64_TPREL16_HA, | |
1527 | 16, /* rightshift */ | |
1528 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1529 | 16, /* bitsize */ | |
1530 | FALSE, /* pc_relative */ | |
1531 | 0, /* bitpos */ | |
1532 | complain_overflow_dont, /* complain_on_overflow */ | |
1533 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1534 | "R_PPC64_TPREL16_HA", /* name */ | |
1535 | FALSE, /* partial_inplace */ | |
1536 | 0, /* src_mask */ | |
1537 | 0xffff, /* dst_mask */ | |
1538 | FALSE), /* pcrel_offset */ | |
1539 | ||
1540 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1541 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1542 | 32, /* rightshift */ | |
1543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1544 | 16, /* bitsize */ | |
1545 | FALSE, /* pc_relative */ | |
1546 | 0, /* bitpos */ | |
1547 | complain_overflow_dont, /* complain_on_overflow */ | |
1548 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1549 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1550 | FALSE, /* partial_inplace */ | |
1551 | 0, /* src_mask */ | |
1552 | 0xffff, /* dst_mask */ | |
1553 | FALSE), /* pcrel_offset */ | |
1554 | ||
1555 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1556 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1557 | 32, /* rightshift */ | |
1558 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1559 | 16, /* bitsize */ | |
1560 | FALSE, /* pc_relative */ | |
1561 | 0, /* bitpos */ | |
1562 | complain_overflow_dont, /* complain_on_overflow */ | |
1563 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1564 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1565 | FALSE, /* partial_inplace */ | |
1566 | 0, /* src_mask */ | |
1567 | 0xffff, /* dst_mask */ | |
1568 | FALSE), /* pcrel_offset */ | |
1569 | ||
1570 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1571 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1572 | 48, /* rightshift */ | |
1573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1574 | 16, /* bitsize */ | |
1575 | FALSE, /* pc_relative */ | |
1576 | 0, /* bitpos */ | |
1577 | complain_overflow_dont, /* complain_on_overflow */ | |
1578 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1579 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1580 | FALSE, /* partial_inplace */ | |
1581 | 0, /* src_mask */ | |
1582 | 0xffff, /* dst_mask */ | |
1583 | FALSE), /* pcrel_offset */ | |
1584 | ||
1585 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1586 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1587 | 48, /* rightshift */ | |
1588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1589 | 16, /* bitsize */ | |
1590 | FALSE, /* pc_relative */ | |
1591 | 0, /* bitpos */ | |
1592 | complain_overflow_dont, /* complain_on_overflow */ | |
1593 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1594 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1595 | FALSE, /* partial_inplace */ | |
1596 | 0, /* src_mask */ | |
1597 | 0xffff, /* dst_mask */ | |
1598 | FALSE), /* pcrel_offset */ | |
1599 | ||
1600 | /* Like TPREL16, but for insns with a DS field. */ | |
1601 | HOWTO (R_PPC64_TPREL16_DS, | |
1602 | 0, /* rightshift */ | |
1603 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1604 | 16, /* bitsize */ | |
1605 | FALSE, /* pc_relative */ | |
1606 | 0, /* bitpos */ | |
1607 | complain_overflow_signed, /* complain_on_overflow */ | |
1608 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1609 | "R_PPC64_TPREL16_DS", /* name */ | |
1610 | FALSE, /* partial_inplace */ | |
1611 | 0, /* src_mask */ | |
1612 | 0xfffc, /* dst_mask */ | |
1613 | FALSE), /* pcrel_offset */ | |
1614 | ||
1615 | /* Like TPREL16_DS, but no overflow. */ | |
1616 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1617 | 0, /* rightshift */ | |
1618 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1619 | 16, /* bitsize */ | |
1620 | FALSE, /* pc_relative */ | |
1621 | 0, /* bitpos */ | |
1622 | complain_overflow_dont, /* complain_on_overflow */ | |
1623 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1624 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1625 | FALSE, /* partial_inplace */ | |
1626 | 0, /* src_mask */ | |
1627 | 0xfffc, /* dst_mask */ | |
1628 | FALSE), /* pcrel_offset */ | |
1629 | ||
1630 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1631 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1632 | to the first entry relative to the TOC base (r2). */ | |
1633 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1634 | 0, /* rightshift */ | |
1635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1636 | 16, /* bitsize */ | |
1637 | FALSE, /* pc_relative */ | |
1638 | 0, /* bitpos */ | |
1639 | complain_overflow_signed, /* complain_on_overflow */ | |
1640 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1641 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1642 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1643 | 0, /* src_mask */ |
1644 | 0xffff, /* dst_mask */ | |
b34976b6 | 1645 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1646 | |
411e1bfb AM |
1647 | /* Like GOT_TLSGD16, but no overflow. */ |
1648 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1649 | 0, /* rightshift */ |
1650 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1651 | 16, /* bitsize */ | |
b34976b6 | 1652 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1653 | 0, /* bitpos */ |
1654 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1655 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1656 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1657 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1658 | 0, /* src_mask */ |
1659 | 0xffff, /* dst_mask */ | |
b34976b6 | 1660 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1661 | |
411e1bfb AM |
1662 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1663 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1664 | 16, /* rightshift */ |
1665 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1666 | 16, /* bitsize */ | |
b34976b6 | 1667 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1668 | 0, /* bitpos */ |
1669 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1670 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1671 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1672 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1673 | 0, /* src_mask */ |
1674 | 0xffff, /* dst_mask */ | |
b34976b6 | 1675 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1676 | |
411e1bfb AM |
1677 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1678 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1679 | 16, /* rightshift */ |
1680 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1681 | 16, /* bitsize */ | |
b34976b6 | 1682 | FALSE, /* pc_relative */ |
5bd4f169 | 1683 | 0, /* bitpos */ |
411e1bfb | 1684 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1685 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1686 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1687 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1688 | 0, /* src_mask */ |
1689 | 0xffff, /* dst_mask */ | |
b34976b6 | 1690 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1691 | |
411e1bfb AM |
1692 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1693 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1694 | first entry relative to the TOC base (r2). */ | |
1695 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1696 | 0, /* rightshift */ |
1697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1698 | 16, /* bitsize */ | |
b34976b6 | 1699 | FALSE, /* pc_relative */ |
5bd4f169 | 1700 | 0, /* bitpos */ |
411e1bfb AM |
1701 | complain_overflow_signed, /* complain_on_overflow */ |
1702 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1703 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1704 | FALSE, /* partial_inplace */ |
d006db6c | 1705 | 0, /* src_mask */ |
411e1bfb | 1706 | 0xffff, /* dst_mask */ |
b34976b6 | 1707 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1708 | |
411e1bfb AM |
1709 | /* Like GOT_TLSLD16, but no overflow. */ |
1710 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1711 | 0, /* rightshift */ |
1712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1713 | 16, /* bitsize */ | |
b34976b6 | 1714 | FALSE, /* pc_relative */ |
5bd4f169 | 1715 | 0, /* bitpos */ |
411e1bfb AM |
1716 | complain_overflow_dont, /* complain_on_overflow */ |
1717 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1718 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1719 | FALSE, /* partial_inplace */ |
d006db6c | 1720 | 0, /* src_mask */ |
411e1bfb | 1721 | 0xffff, /* dst_mask */ |
b34976b6 | 1722 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1723 | |
411e1bfb AM |
1724 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1725 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1726 | 16, /* rightshift */ | |
5bd4f169 AM |
1727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1728 | 16, /* bitsize */ | |
b34976b6 | 1729 | FALSE, /* pc_relative */ |
5bd4f169 | 1730 | 0, /* bitpos */ |
411e1bfb | 1731 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1732 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1733 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1734 | FALSE, /* partial_inplace */ |
d006db6c | 1735 | 0, /* src_mask */ |
411e1bfb | 1736 | 0xffff, /* dst_mask */ |
b34976b6 | 1737 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1738 | |
411e1bfb AM |
1739 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1740 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1741 | 16, /* rightshift */ | |
5bd4f169 AM |
1742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1743 | 16, /* bitsize */ | |
b34976b6 | 1744 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1745 | 0, /* bitpos */ |
1746 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1747 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1748 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1749 | FALSE, /* partial_inplace */ |
d006db6c | 1750 | 0, /* src_mask */ |
411e1bfb | 1751 | 0xffff, /* dst_mask */ |
b34976b6 | 1752 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1753 | |
411e1bfb AM |
1754 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1755 | the offset to the entry relative to the TOC base (r2). */ | |
1756 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1757 | 0, /* rightshift */ |
1758 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1759 | 16, /* bitsize */ | |
b34976b6 | 1760 | FALSE, /* pc_relative */ |
5bd4f169 | 1761 | 0, /* bitpos */ |
411e1bfb | 1762 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1763 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1764 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1765 | FALSE, /* partial_inplace */ |
d006db6c | 1766 | 0, /* src_mask */ |
5bd4f169 | 1767 | 0xfffc, /* dst_mask */ |
b34976b6 | 1768 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1769 | |
411e1bfb AM |
1770 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1771 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1772 | 0, /* rightshift */ |
c061c2d8 AM |
1773 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1774 | 16, /* bitsize */ | |
b34976b6 | 1775 | FALSE, /* pc_relative */ |
5bd4f169 | 1776 | 0, /* bitpos */ |
411e1bfb AM |
1777 | complain_overflow_dont, /* complain_on_overflow */ |
1778 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1779 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1780 | FALSE, /* partial_inplace */ |
d006db6c | 1781 | 0, /* src_mask */ |
c061c2d8 | 1782 | 0xfffc, /* dst_mask */ |
b34976b6 | 1783 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1784 | |
411e1bfb AM |
1785 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1786 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1787 | 16, /* rightshift */ | |
5bd4f169 AM |
1788 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1789 | 16, /* bitsize */ | |
b34976b6 | 1790 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1791 | 0, /* bitpos */ |
1792 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1793 | ppc64_elf_unhandled_reloc, /* special_function */ |
1794 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1795 | FALSE, /* partial_inplace */ |
d006db6c | 1796 | 0, /* src_mask */ |
411e1bfb | 1797 | 0xffff, /* dst_mask */ |
b34976b6 | 1798 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1799 | |
411e1bfb AM |
1800 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1801 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1802 | 16, /* rightshift */ | |
1803 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1804 | 16, /* bitsize */ | |
1805 | FALSE, /* pc_relative */ | |
1806 | 0, /* bitpos */ | |
1807 | complain_overflow_dont, /* complain_on_overflow */ | |
1808 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1809 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1810 | FALSE, /* partial_inplace */ | |
1811 | 0, /* src_mask */ | |
1812 | 0xffff, /* dst_mask */ | |
1813 | FALSE), /* pcrel_offset */ | |
1814 | ||
1815 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1816 | offset to the entry relative to the TOC base (r2). */ | |
1817 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1818 | 0, /* rightshift */ |
1819 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1820 | 16, /* bitsize */ | |
b34976b6 | 1821 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1822 | 0, /* bitpos */ |
1823 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1824 | ppc64_elf_unhandled_reloc, /* special_function */ |
1825 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1826 | FALSE, /* partial_inplace */ |
d006db6c | 1827 | 0, /* src_mask */ |
ad8e1ba5 | 1828 | 0xfffc, /* dst_mask */ |
b34976b6 | 1829 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1830 | |
411e1bfb AM |
1831 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1832 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1833 | 0, /* rightshift */ |
1834 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1835 | 16, /* bitsize */ | |
b34976b6 | 1836 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1837 | 0, /* bitpos */ |
1838 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1839 | ppc64_elf_unhandled_reloc, /* special_function */ |
1840 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1841 | FALSE, /* partial_inplace */ |
d006db6c | 1842 | 0, /* src_mask */ |
ad8e1ba5 | 1843 | 0xfffc, /* dst_mask */ |
b34976b6 | 1844 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1845 | |
411e1bfb AM |
1846 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1847 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1848 | 16, /* rightshift */ | |
5bd4f169 AM |
1849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1850 | 16, /* bitsize */ | |
b34976b6 | 1851 | FALSE, /* pc_relative */ |
5bd4f169 | 1852 | 0, /* bitpos */ |
411e1bfb | 1853 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1854 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1855 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1856 | FALSE, /* partial_inplace */ |
d006db6c | 1857 | 0, /* src_mask */ |
411e1bfb | 1858 | 0xffff, /* dst_mask */ |
b34976b6 | 1859 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1860 | |
411e1bfb AM |
1861 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1862 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1863 | 16, /* rightshift */ | |
5bd4f169 AM |
1864 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1865 | 16, /* bitsize */ | |
b34976b6 | 1866 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1867 | 0, /* bitpos */ |
1868 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1869 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1870 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1871 | FALSE, /* partial_inplace */ |
d006db6c | 1872 | 0, /* src_mask */ |
411e1bfb | 1873 | 0xffff, /* dst_mask */ |
b34976b6 | 1874 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1875 | |
1876 | /* GNU extension to record C++ vtable hierarchy. */ | |
1877 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1878 | 0, /* rightshift */ | |
1879 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1880 | 0, /* bitsize */ | |
b34976b6 | 1881 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1882 | 0, /* bitpos */ |
1883 | complain_overflow_dont, /* complain_on_overflow */ | |
1884 | NULL, /* special_function */ | |
1885 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1886 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1887 | 0, /* src_mask */ |
1888 | 0, /* dst_mask */ | |
b34976b6 | 1889 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1890 | |
1891 | /* GNU extension to record C++ vtable member usage. */ | |
1892 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1893 | 0, /* rightshift */ | |
1894 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1895 | 0, /* bitsize */ | |
b34976b6 | 1896 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1897 | 0, /* bitpos */ |
1898 | complain_overflow_dont, /* complain_on_overflow */ | |
1899 | NULL, /* special_function */ | |
1900 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1901 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1902 | 0, /* src_mask */ |
1903 | 0, /* dst_mask */ | |
b34976b6 | 1904 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1905 | }; |
1906 | ||
1907 | \f | |
1908 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1909 | be done. */ | |
1910 | ||
1911 | static void | |
4ce794b7 | 1912 | ppc_howto_init (void) |
5bd4f169 AM |
1913 | { |
1914 | unsigned int i, type; | |
1915 | ||
1916 | for (i = 0; | |
1917 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1918 | i++) | |
1919 | { | |
1920 | type = ppc64_elf_howto_raw[i].type; | |
1921 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1922 | / sizeof (ppc64_elf_howto_table[0]))); | |
1923 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | static reloc_howto_type * | |
4ce794b7 AM |
1928 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1929 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1930 | { |
411e1bfb | 1931 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1932 | |
1933 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1934 | /* Initialize howto table if needed. */ | |
1935 | ppc_howto_init (); | |
1936 | ||
4ce794b7 | 1937 | switch (code) |
5bd4f169 AM |
1938 | { |
1939 | default: | |
4ce794b7 | 1940 | return NULL; |
5bd4f169 | 1941 | |
411e1bfb AM |
1942 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1943 | break; | |
1944 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1945 | break; | |
1946 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1947 | break; | |
1948 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1949 | break; | |
1950 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1951 | break; | |
1952 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1953 | break; | |
1954 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2033 | break; |
411e1bfb | 2034 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2035 | break; |
411e1bfb | 2036 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2037 | break; |
411e1bfb | 2038 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2039 | break; |
411e1bfb | 2040 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2041 | break; |
411e1bfb | 2042 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2043 | break; |
411e1bfb | 2044 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2045 | break; |
411e1bfb | 2046 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2047 | break; |
411e1bfb | 2048 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2049 | break; |
411e1bfb | 2050 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2051 | break; |
411e1bfb | 2052 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2053 | break; |
411e1bfb | 2054 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2055 | break; |
411e1bfb | 2056 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2057 | break; |
411e1bfb | 2058 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2059 | break; |
411e1bfb | 2060 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2061 | break; |
727fc41e AM |
2062 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2063 | break; | |
2064 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2065 | break; | |
411e1bfb | 2066 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2067 | break; |
411e1bfb | 2068 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2069 | break; |
411e1bfb | 2070 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2071 | break; |
411e1bfb | 2072 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2073 | break; |
411e1bfb | 2074 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2075 | break; |
411e1bfb | 2076 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2077 | break; |
411e1bfb AM |
2078 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2079 | break; | |
2080 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2099 | break; | |
2100 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2101 | break; | |
2102 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2103 | break; | |
2104 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2105 | break; | |
2106 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2107 | break; | |
2108 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2109 | break; | |
2110 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2111 | break; | |
2112 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2113 | break; | |
2114 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2115 | break; | |
2116 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2117 | break; | |
2118 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2119 | break; | |
2120 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2121 | break; | |
2122 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2123 | break; | |
2124 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2125 | break; | |
2126 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2127 | break; | |
2128 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2129 | break; | |
2130 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2131 | break; | |
2132 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2133 | break; | |
2134 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2135 | break; | |
2136 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2137 | break; | |
2138 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2139 | break; | |
2140 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2141 | break; | |
2142 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2143 | break; | |
2144 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2145 | break; | |
2146 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2147 | break; |
2148 | } | |
2149 | ||
4ce794b7 | 2150 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2151 | }; |
2152 | ||
157090f7 AM |
2153 | static reloc_howto_type * |
2154 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2155 | const char *r_name) | |
2156 | { | |
2157 | unsigned int i; | |
2158 | ||
2159 | for (i = 0; | |
2160 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2161 | i++) | |
2162 | if (ppc64_elf_howto_raw[i].name != NULL | |
2163 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2164 | return &ppc64_elf_howto_raw[i]; | |
2165 | ||
2166 | return NULL; | |
2167 | } | |
2168 | ||
5bd4f169 AM |
2169 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2170 | ||
2171 | static void | |
4ce794b7 AM |
2172 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2173 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2174 | { |
65f38f15 AM |
2175 | unsigned int type; |
2176 | ||
ef60b7ff | 2177 | /* Initialize howto table if needed. */ |
5bd4f169 | 2178 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2179 | ppc_howto_init (); |
2180 | ||
65f38f15 | 2181 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2182 | if (type >= (sizeof (ppc64_elf_howto_table) |
2183 | / sizeof (ppc64_elf_howto_table[0]))) | |
2184 | { | |
2185 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2186 | abfd, (int) type); |
2187 | type = R_PPC64_NONE; | |
d0fb9a8d | 2188 | } |
65f38f15 | 2189 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2190 | } |
2191 | ||
04c9666a | 2192 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2193 | |
2194 | static bfd_reloc_status_type | |
4ce794b7 AM |
2195 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2196 | void *data, asection *input_section, | |
2197 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2198 | { |
805fc799 AM |
2199 | /* If this is a relocatable link (output_bfd test tells us), just |
2200 | call the generic function. Any adjustment will be done at final | |
2201 | link time. */ | |
2202 | if (output_bfd != NULL) | |
cedb70c5 | 2203 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2204 | input_section, output_bfd, error_message); |
2205 | ||
2206 | /* Adjust the addend for sign extension of the low 16 bits. | |
2207 | We won't actually be using the low 16 bits, so trashing them | |
2208 | doesn't matter. */ | |
2209 | reloc_entry->addend += 0x8000; | |
2210 | return bfd_reloc_continue; | |
2211 | } | |
5bd4f169 | 2212 | |
2441e016 AM |
2213 | static bfd_reloc_status_type |
2214 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2215 | void *data, asection *input_section, | |
2216 | bfd *output_bfd, char **error_message) | |
2217 | { | |
2218 | if (output_bfd != NULL) | |
2219 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2220 | input_section, output_bfd, error_message); | |
2221 | ||
699733f6 AM |
2222 | if (strcmp (symbol->section->name, ".opd") == 0 |
2223 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2224 | { |
2225 | bfd_vma dest = opd_entry_value (symbol->section, | |
2226 | symbol->value + reloc_entry->addend, | |
2227 | NULL, NULL); | |
2228 | if (dest != (bfd_vma) -1) | |
2229 | reloc_entry->addend = dest - (symbol->value | |
2230 | + symbol->section->output_section->vma | |
2231 | + symbol->section->output_offset); | |
2232 | } | |
2233 | return bfd_reloc_continue; | |
2234 | } | |
2235 | ||
805fc799 | 2236 | static bfd_reloc_status_type |
4ce794b7 AM |
2237 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2238 | void *data, asection *input_section, | |
2239 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2240 | { |
2241 | long insn; | |
04c9666a | 2242 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2243 | bfd_size_type octets; |
2244 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2245 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2246 | |
2247 | /* If this is a relocatable link (output_bfd test tells us), just | |
2248 | call the generic function. Any adjustment will be done at final | |
2249 | link time. */ | |
5bd4f169 | 2250 | if (output_bfd != NULL) |
cedb70c5 | 2251 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2252 | input_section, output_bfd, error_message); |
2253 | ||
2254 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2255 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2256 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2257 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2258 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2259 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2260 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2261 | |
2262 | if (is_power4) | |
5bd4f169 | 2263 | { |
805fc799 AM |
2264 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2265 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2266 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2267 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2268 | insn |= 0x02 << 21; | |
2269 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2270 | insn |= 0x08 << 21; | |
2271 | else | |
2441e016 | 2272 | goto out; |
5bd4f169 | 2273 | } |
805fc799 AM |
2274 | else |
2275 | { | |
2276 | bfd_vma target = 0; | |
2277 | bfd_vma from; | |
5bd4f169 | 2278 | |
805fc799 AM |
2279 | if (!bfd_is_com_section (symbol->section)) |
2280 | target = symbol->value; | |
2281 | target += symbol->section->output_section->vma; | |
2282 | target += symbol->section->output_offset; | |
2283 | target += reloc_entry->addend; | |
5bd4f169 | 2284 | |
805fc799 AM |
2285 | from = (reloc_entry->address |
2286 | + input_section->output_offset | |
2287 | + input_section->output_section->vma); | |
5bd4f169 | 2288 | |
805fc799 AM |
2289 | /* Invert 'y' bit if not the default. */ |
2290 | if ((bfd_signed_vma) (target - from) < 0) | |
2291 | insn ^= 0x01 << 21; | |
2292 | } | |
4ce794b7 | 2293 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2294 | out: |
2295 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2296 | input_section, output_bfd, error_message); | |
805fc799 | 2297 | } |
5bd4f169 | 2298 | |
805fc799 | 2299 | static bfd_reloc_status_type |
4ce794b7 AM |
2300 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2301 | void *data, asection *input_section, | |
2302 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2303 | { |
2304 | /* If this is a relocatable link (output_bfd test tells us), just | |
2305 | call the generic function. Any adjustment will be done at final | |
2306 | link time. */ | |
2307 | if (output_bfd != NULL) | |
cedb70c5 | 2308 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2309 | input_section, output_bfd, error_message); |
5bd4f169 | 2310 | |
805fc799 AM |
2311 | /* Subtract the symbol section base address. */ |
2312 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2313 | return bfd_reloc_continue; |
2314 | } | |
2315 | ||
805fc799 | 2316 | static bfd_reloc_status_type |
4ce794b7 AM |
2317 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2318 | void *data, asection *input_section, | |
2319 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2320 | { |
2321 | /* If this is a relocatable link (output_bfd test tells us), just | |
2322 | call the generic function. Any adjustment will be done at final | |
2323 | link time. */ | |
2324 | if (output_bfd != NULL) | |
cedb70c5 | 2325 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2326 | input_section, output_bfd, error_message); |
2327 | ||
2328 | /* Subtract the symbol section base address. */ | |
2329 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2330 | ||
2331 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2332 | reloc_entry->addend += 0x8000; | |
2333 | return bfd_reloc_continue; | |
2334 | } | |
2335 | ||
2336 | static bfd_reloc_status_type | |
4ce794b7 AM |
2337 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2338 | void *data, asection *input_section, | |
2339 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2340 | { |
2341 | bfd_vma TOCstart; | |
2342 | ||
2343 | /* If this is a relocatable link (output_bfd test tells us), just | |
2344 | call the generic function. Any adjustment will be done at final | |
2345 | link time. */ | |
2346 | if (output_bfd != NULL) | |
cedb70c5 | 2347 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2348 | input_section, output_bfd, error_message); |
2349 | ||
2350 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2351 | if (TOCstart == 0) | |
2352 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2353 | ||
2354 | /* Subtract the TOC base address. */ | |
2355 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2356 | return bfd_reloc_continue; | |
2357 | } | |
2358 | ||
2359 | static bfd_reloc_status_type | |
4ce794b7 AM |
2360 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2361 | void *data, asection *input_section, | |
2362 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2363 | { |
2364 | bfd_vma TOCstart; | |
2365 | ||
2366 | /* If this is a relocatable link (output_bfd test tells us), just | |
2367 | call the generic function. Any adjustment will be done at final | |
2368 | link time. */ | |
2369 | if (output_bfd != NULL) | |
cedb70c5 | 2370 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2371 | input_section, output_bfd, error_message); |
2372 | ||
2373 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2374 | if (TOCstart == 0) | |
2375 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2376 | ||
2377 | /* Subtract the TOC base address. */ | |
2378 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2379 | ||
2380 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2381 | reloc_entry->addend += 0x8000; | |
2382 | return bfd_reloc_continue; | |
2383 | } | |
2384 | ||
2385 | static bfd_reloc_status_type | |
4ce794b7 AM |
2386 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2387 | void *data, asection *input_section, | |
2388 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2389 | { |
2390 | bfd_vma TOCstart; | |
2391 | bfd_size_type octets; | |
2392 | ||
2393 | /* If this is a relocatable link (output_bfd test tells us), just | |
2394 | call the generic function. Any adjustment will be done at final | |
2395 | link time. */ | |
2396 | if (output_bfd != NULL) | |
cedb70c5 | 2397 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2398 | input_section, output_bfd, error_message); |
2399 | ||
2400 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2401 | if (TOCstart == 0) | |
2402 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2403 | ||
2404 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2405 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2406 | return bfd_reloc_ok; | |
2407 | } | |
2408 | ||
2409 | static bfd_reloc_status_type | |
4ce794b7 AM |
2410 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2411 | void *data, asection *input_section, | |
2412 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2413 | { |
2414 | /* If this is a relocatable link (output_bfd test tells us), just | |
2415 | call the generic function. Any adjustment will be done at final | |
2416 | link time. */ | |
2417 | if (output_bfd != NULL) | |
cedb70c5 | 2418 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2419 | input_section, output_bfd, error_message); |
2420 | ||
2421 | if (error_message != NULL) | |
2422 | { | |
2423 | static char buf[60]; | |
2424 | sprintf (buf, "generic linker can't handle %s", | |
2425 | reloc_entry->howto->name); | |
2426 | *error_message = buf; | |
2427 | } | |
2428 | return bfd_reloc_dangerous; | |
2429 | } | |
2430 | ||
e717da7e AM |
2431 | struct ppc64_elf_obj_tdata |
2432 | { | |
2433 | struct elf_obj_tdata elf; | |
2434 | ||
2435 | /* Shortcuts to dynamic linker sections. */ | |
2436 | asection *got; | |
2437 | asection *relgot; | |
2438 | ||
b3fac117 AM |
2439 | /* Used during garbage collection. We attach global symbols defined |
2440 | on removed .opd entries to this section so that the sym is removed. */ | |
2441 | asection *deleted_section; | |
81688140 | 2442 | |
e717da7e AM |
2443 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2444 | sections means we potentially need one of these for each input bfd. */ | |
2445 | union { | |
2446 | bfd_signed_vma refcount; | |
2447 | bfd_vma offset; | |
2448 | } tlsld_got; | |
8860955f AM |
2449 | |
2450 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2451 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2452 | }; |
2453 | ||
2454 | #define ppc64_elf_tdata(bfd) \ | |
2455 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2456 | ||
2457 | #define ppc64_tlsld_got(bfd) \ | |
2458 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2459 | ||
0c8d6e5c AM |
2460 | #define is_ppc64_elf(bfd) \ |
2461 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2462 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
2463 | ||
e717da7e AM |
2464 | /* Override the generic function because we store some extras. */ |
2465 | ||
2466 | static bfd_boolean | |
2467 | ppc64_elf_mkobject (bfd *abfd) | |
2468 | { | |
0ffa91dd NC |
2469 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
2470 | PPC64_ELF_TDATA); | |
e717da7e AM |
2471 | } |
2472 | ||
feee612b AM |
2473 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2474 | default is 32 bit. */ | |
2475 | ||
b34976b6 | 2476 | static bfd_boolean |
4ce794b7 | 2477 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2478 | { |
2479 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2480 | { | |
2481 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2482 | ||
2483 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2484 | { | |
2485 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2486 | abfd->arch_info = abfd->arch_info->next; | |
2487 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2488 | } | |
2489 | } | |
b34976b6 | 2490 | return TRUE; |
feee612b AM |
2491 | } |
2492 | ||
d37c89e5 AM |
2493 | /* Support for core dump NOTE sections. */ |
2494 | ||
2495 | static bfd_boolean | |
2496 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2497 | { | |
eea6121a | 2498 | size_t offset, size; |
d37c89e5 AM |
2499 | |
2500 | if (note->descsz != 504) | |
2501 | return FALSE; | |
2502 | ||
2503 | /* pr_cursig */ | |
2504 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2505 | ||
2506 | /* pr_pid */ | |
2507 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2508 | ||
2509 | /* pr_reg */ | |
2510 | offset = 112; | |
eea6121a | 2511 | size = 384; |
d37c89e5 AM |
2512 | |
2513 | /* Make a ".reg/999" section. */ | |
2514 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2515 | size, note->descpos + offset); |
d37c89e5 AM |
2516 | } |
2517 | ||
2518 | static bfd_boolean | |
2519 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2520 | { | |
2521 | if (note->descsz != 136) | |
2522 | return FALSE; | |
2523 | ||
2524 | elf_tdata (abfd)->core_program | |
2525 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2526 | elf_tdata (abfd)->core_command | |
2527 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2528 | ||
2529 | return TRUE; | |
2530 | } | |
2531 | ||
183e98be AM |
2532 | static char * |
2533 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2534 | ...) | |
2535 | { | |
2536 | switch (note_type) | |
2537 | { | |
2538 | default: | |
2539 | return NULL; | |
2540 | ||
2541 | case NT_PRPSINFO: | |
2542 | { | |
2543 | char data[136]; | |
2544 | va_list ap; | |
2545 | ||
2546 | va_start (ap, note_type); | |
2547 | memset (data, 0, 40); | |
2548 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2549 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2550 | va_end (ap); | |
2551 | return elfcore_write_note (abfd, buf, bufsiz, | |
2552 | "CORE", note_type, data, sizeof (data)); | |
2553 | } | |
2554 | ||
2555 | case NT_PRSTATUS: | |
2556 | { | |
2557 | char data[504]; | |
2558 | va_list ap; | |
2559 | long pid; | |
2560 | int cursig; | |
2561 | const void *greg; | |
2562 | ||
2563 | va_start (ap, note_type); | |
2564 | memset (data, 0, 112); | |
2565 | pid = va_arg (ap, long); | |
2566 | bfd_put_32 (abfd, pid, data + 32); | |
2567 | cursig = va_arg (ap, int); | |
2568 | bfd_put_16 (abfd, cursig, data + 12); | |
2569 | greg = va_arg (ap, const void *); | |
2570 | memcpy (data + 112, greg, 384); | |
2571 | memset (data + 496, 0, 8); | |
2572 | va_end (ap); | |
2573 | return elfcore_write_note (abfd, buf, bufsiz, | |
2574 | "CORE", note_type, data, sizeof (data)); | |
2575 | } | |
2576 | } | |
2577 | } | |
2578 | ||
5bd4f169 AM |
2579 | /* Merge backend specific data from an object file to the output |
2580 | object file when linking. */ | |
2f6d9989 | 2581 | |
b34976b6 | 2582 | static bfd_boolean |
4ce794b7 | 2583 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2584 | { |
5bd4f169 AM |
2585 | /* Check if we have the same endianess. */ |
2586 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2587 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2588 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2589 | { | |
2590 | const char *msg; | |
2591 | ||
2592 | if (bfd_big_endian (ibfd)) | |
d003868e | 2593 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2594 | "and target is little endian"); |
5bd4f169 | 2595 | else |
d003868e | 2596 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2597 | "and target is big endian"); |
5bd4f169 | 2598 | |
d003868e | 2599 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2600 | |
2601 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2602 | return FALSE; |
5bd4f169 AM |
2603 | } |
2604 | ||
b34976b6 | 2605 | return TRUE; |
5bd4f169 | 2606 | } |
f0abc2a1 | 2607 | |
5d35169e AM |
2608 | /* Add extra PPC sections. */ |
2609 | ||
b35d266b | 2610 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2611 | { |
0112cd26 NC |
2612 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2613 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2614 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2615 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2616 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2617 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2618 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2619 | }; |
2620 | ||
7c8fe5c4 AM |
2621 | enum _ppc64_sec_type { |
2622 | sec_normal = 0, | |
2623 | sec_opd = 1, | |
2624 | sec_toc = 2 | |
2625 | }; | |
2626 | ||
f0abc2a1 AM |
2627 | struct _ppc64_elf_section_data |
2628 | { | |
2629 | struct bfd_elf_section_data elf; | |
411e1bfb | 2630 | |
f0abc2a1 AM |
2631 | union |
2632 | { | |
74f0fb50 AM |
2633 | /* An array with one entry for each opd function descriptor. */ |
2634 | struct _opd_sec_data | |
2635 | { | |
2636 | /* Points to the function code section for local opd entries. */ | |
2637 | asection **func_sec; | |
2638 | ||
2639 | /* After editing .opd, adjust references to opd local syms. */ | |
2640 | long *adjust; | |
2641 | } opd; | |
7c8fe5c4 | 2642 | |
3a71aa26 AM |
2643 | /* An array for toc sections, indexed by offset/8. */ |
2644 | struct _toc_sec_data | |
2645 | { | |
2646 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2647 | unsigned *symndx; | |
2648 | ||
2649 | /* And the relocation addend. */ | |
2650 | bfd_vma *add; | |
2651 | } toc; | |
7c8fe5c4 AM |
2652 | } u; |
2653 | ||
2654 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2655 | |
7c8fe5c4 AM |
2656 | /* Flag set when small branches are detected. Used to |
2657 | select suitable defaults for the stub group size. */ | |
2658 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2659 | }; |
2660 | ||
2661 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2662 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2663 | |
2664 | static bfd_boolean | |
4ce794b7 | 2665 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2666 | { |
f592407e AM |
2667 | if (!sec->used_by_bfd) |
2668 | { | |
2669 | struct _ppc64_elf_section_data *sdata; | |
2670 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2671 | |
f592407e AM |
2672 | sdata = bfd_zalloc (abfd, amt); |
2673 | if (sdata == NULL) | |
2674 | return FALSE; | |
2675 | sec->used_by_bfd = sdata; | |
2676 | } | |
f0abc2a1 AM |
2677 | |
2678 | return _bfd_elf_new_section_hook (abfd, sec); | |
2679 | } | |
4025353c | 2680 | |
74f0fb50 | 2681 | static struct _opd_sec_data * |
4025353c AM |
2682 | get_opd_info (asection * sec) |
2683 | { | |
2684 | if (sec != NULL | |
2685 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2686 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2687 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2688 | return NULL; |
2689 | } | |
90e3cdf2 JJ |
2690 | \f |
2691 | /* Parameters for the qsort hook. */ | |
2692 | static asection *synthetic_opd; | |
2693 | static bfd_boolean synthetic_relocatable; | |
2694 | ||
699733f6 | 2695 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2696 | |
2697 | static int | |
2698 | compare_symbols (const void *ap, const void *bp) | |
2699 | { | |
2700 | const asymbol *a = * (const asymbol **) ap; | |
2701 | const asymbol *b = * (const asymbol **) bp; | |
2702 | ||
699733f6 AM |
2703 | /* Section symbols first. */ |
2704 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2705 | return -1; |
699733f6 | 2706 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2707 | return 1; |
2708 | ||
699733f6 | 2709 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2710 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2711 | return -1; | |
2712 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2713 | return 1; | |
2714 | ||
699733f6 | 2715 | /* then other code symbols. */ |
90e3cdf2 JJ |
2716 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2717 | == (SEC_CODE | SEC_ALLOC) | |
2718 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2719 | != (SEC_CODE | SEC_ALLOC)) | |
2720 | return -1; | |
2721 | ||
2722 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2723 | != (SEC_CODE | SEC_ALLOC) | |
2724 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2725 | == (SEC_CODE | SEC_ALLOC)) | |
2726 | return 1; | |
2727 | ||
2728 | if (synthetic_relocatable) | |
2729 | { | |
2730 | if (a->section->id < b->section->id) | |
2731 | return -1; | |
2732 | ||
2733 | if (a->section->id > b->section->id) | |
2734 | return 1; | |
2735 | } | |
2736 | ||
2737 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2738 | return -1; | |
2739 | ||
2740 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2741 | return 1; | |
2742 | ||
4d35a0aa AM |
2743 | /* For syms with the same value, prefer strong dynamic global function |
2744 | syms over other syms. */ | |
2745 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2746 | return -1; | |
2747 | ||
2748 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2749 | return 1; | |
2750 | ||
2751 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2752 | return -1; | |
2753 | ||
2754 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2755 | return 1; | |
2756 | ||
2757 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2758 | return -1; | |
2759 | ||
2760 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2761 | return 1; | |
2762 | ||
2763 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2764 | return -1; | |
2765 | ||
2766 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2767 | return 1; | |
2768 | ||
90e3cdf2 JJ |
2769 | return 0; |
2770 | } | |
2771 | ||
699733f6 | 2772 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2773 | |
699733f6 AM |
2774 | static asymbol * |
2775 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2776 | { |
699733f6 | 2777 | long mid; |
90e3cdf2 | 2778 | |
699733f6 AM |
2779 | if (id == -1) |
2780 | { | |
2781 | while (lo < hi) | |
2782 | { | |
2783 | mid = (lo + hi) >> 1; | |
2784 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2785 | lo = mid + 1; | |
2786 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2787 | hi = mid; | |
2788 | else | |
2789 | return syms[mid]; | |
2790 | } | |
2791 | } | |
2792 | else | |
2793 | { | |
2794 | while (lo < hi) | |
2795 | { | |
2796 | mid = (lo + hi) >> 1; | |
2797 | if (syms[mid]->section->id < id) | |
2798 | lo = mid + 1; | |
2799 | else if (syms[mid]->section->id > id) | |
2800 | hi = mid; | |
2801 | else if (syms[mid]->value < value) | |
2802 | lo = mid + 1; | |
2803 | else if (syms[mid]->value > value) | |
2804 | hi = mid; | |
2805 | else | |
2806 | return syms[mid]; | |
2807 | } | |
2808 | } | |
2809 | return NULL; | |
90e3cdf2 JJ |
2810 | } |
2811 | ||
468392fb AM |
2812 | static bfd_boolean |
2813 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2814 | { | |
2815 | bfd_vma vma = *(bfd_vma *) ptr; | |
2816 | return ((section->flags & SEC_ALLOC) != 0 | |
2817 | && section->vma <= vma | |
2818 | && vma < section->vma + section->size); | |
2819 | } | |
2820 | ||
699733f6 | 2821 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2822 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2823 | |
2824 | static long | |
a7535cf3 AM |
2825 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2826 | long static_count, asymbol **static_syms, | |
2827 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2828 | asymbol **ret) |
90e3cdf2 JJ |
2829 | { |
2830 | asymbol *s; | |
699733f6 AM |
2831 | long i; |
2832 | long count; | |
90e3cdf2 | 2833 | char *names; |
a7535cf3 | 2834 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2835 | asection *opd; |
90e3cdf2 | 2836 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2837 | asymbol **syms; |
90e3cdf2 JJ |
2838 | |
2839 | *ret = NULL; | |
2840 | ||
2841 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2842 | if (opd == NULL) | |
2843 | return 0; | |
2844 | ||
a7535cf3 | 2845 | symcount = static_count; |
c9727e01 | 2846 | if (!relocatable) |
a7535cf3 | 2847 | symcount += dyn_count; |
90e3cdf2 | 2848 | if (symcount == 0) |
c9727e01 | 2849 | return 0; |
90e3cdf2 | 2850 | |
a7535cf3 AM |
2851 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2852 | if (syms == NULL) | |
7356fed5 | 2853 | return -1; |
a7535cf3 AM |
2854 | |
2855 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2856 | { | |
2857 | /* Use both symbol tables. */ | |
2858 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2859 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2860 | } | |
2861 | else if (!relocatable && static_count == 0) | |
2862 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2863 | else | |
2864 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2865 | ||
90e3cdf2 JJ |
2866 | synthetic_opd = opd; |
2867 | synthetic_relocatable = relocatable; | |
595da8c5 | 2868 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2869 | |
c9727e01 AM |
2870 | if (!relocatable && symcount > 1) |
2871 | { | |
2872 | long j; | |
2873 | /* Trim duplicate syms, since we may have merged the normal and | |
2874 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2875 | different values, so trim any with the same value. */ |
c9727e01 AM |
2876 | for (i = 1, j = 1; i < symcount; ++i) |
2877 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2878 | != syms[i]->value + syms[i]->section->vma) | |
2879 | syms[j++] = syms[i]; | |
2880 | symcount = j; | |
2881 | } | |
2882 | ||
699733f6 AM |
2883 | i = 0; |
2884 | if (syms[i]->section == opd) | |
2885 | ++i; | |
2886 | codesecsym = i; | |
90e3cdf2 | 2887 | |
699733f6 AM |
2888 | for (; i < symcount; ++i) |
2889 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2890 | != (SEC_CODE | SEC_ALLOC)) | |
2891 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2892 | break; | |
2893 | codesecsymend = i; | |
90e3cdf2 | 2894 | |
699733f6 AM |
2895 | for (; i < symcount; ++i) |
2896 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2897 | break; | |
2898 | secsymend = i; | |
90e3cdf2 | 2899 | |
699733f6 AM |
2900 | for (; i < symcount; ++i) |
2901 | if (syms[i]->section != opd) | |
2902 | break; | |
2903 | opdsymend = i; | |
90e3cdf2 | 2904 | |
699733f6 AM |
2905 | for (; i < symcount; ++i) |
2906 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2907 | != (SEC_CODE | SEC_ALLOC)) | |
2908 | break; | |
2909 | symcount = i; | |
2910 | ||
c9727e01 | 2911 | count = 0; |
90e3cdf2 | 2912 | |
699733f6 | 2913 | if (relocatable) |
90e3cdf2 | 2914 | { |
699733f6 AM |
2915 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2916 | arelent *r; | |
2917 | size_t size; | |
2918 | long relcount; | |
90e3cdf2 | 2919 | |
468392fb AM |
2920 | if (opdsymend == secsymend) |
2921 | goto done; | |
2922 | ||
699733f6 | 2923 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2924 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2925 | if (relcount == 0) |
c9727e01 | 2926 | goto done; |
90e3cdf2 | 2927 | |
7356fed5 AM |
2928 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2929 | { | |
2930 | count = -1; | |
2931 | goto done; | |
2932 | } | |
2933 | ||
699733f6 | 2934 | size = 0; |
595da8c5 | 2935 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2936 | { |
2937 | asymbol *sym; | |
90e3cdf2 | 2938 | |
595da8c5 | 2939 | while (r < opd->relocation + relcount |
699733f6 AM |
2940 | && r->address < syms[i]->value + opd->vma) |
2941 | ++r; | |
90e3cdf2 | 2942 | |
595da8c5 | 2943 | if (r == opd->relocation + relcount) |
699733f6 | 2944 | break; |
90e3cdf2 | 2945 | |
699733f6 AM |
2946 | if (r->address != syms[i]->value + opd->vma) |
2947 | continue; | |
90e3cdf2 | 2948 | |
699733f6 AM |
2949 | if (r->howto->type != R_PPC64_ADDR64) |
2950 | continue; | |
90e3cdf2 | 2951 | |
699733f6 AM |
2952 | sym = *r->sym_ptr_ptr; |
2953 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2954 | sym->section->id, sym->value + r->addend)) | |
2955 | { | |
2956 | ++count; | |
2957 | size += sizeof (asymbol); | |
2958 | size += strlen (syms[i]->name) + 2; | |
2959 | } | |
2960 | } | |
90e3cdf2 | 2961 | |
699733f6 AM |
2962 | s = *ret = bfd_malloc (size); |
2963 | if (s == NULL) | |
2964 | { | |
7356fed5 | 2965 | count = -1; |
c9727e01 | 2966 | goto done; |
699733f6 | 2967 | } |
90e3cdf2 | 2968 | |
699733f6 | 2969 | names = (char *) (s + count); |
90e3cdf2 | 2970 | |
595da8c5 | 2971 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2972 | { |
699733f6 | 2973 | asymbol *sym; |
90e3cdf2 | 2974 | |
595da8c5 | 2975 | while (r < opd->relocation + relcount |
699733f6 AM |
2976 | && r->address < syms[i]->value + opd->vma) |
2977 | ++r; | |
90e3cdf2 | 2978 | |
595da8c5 | 2979 | if (r == opd->relocation + relcount) |
699733f6 AM |
2980 | break; |
2981 | ||
2982 | if (r->address != syms[i]->value + opd->vma) | |
2983 | continue; | |
2984 | ||
2985 | if (r->howto->type != R_PPC64_ADDR64) | |
2986 | continue; | |
90e3cdf2 | 2987 | |
699733f6 AM |
2988 | sym = *r->sym_ptr_ptr; |
2989 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2990 | sym->section->id, sym->value + r->addend)) | |
2991 | { | |
2992 | size_t len; | |
2993 | ||
2994 | *s = *syms[i]; | |
6ba2a415 | 2995 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2996 | s->section = sym->section; |
2997 | s->value = sym->value + r->addend; | |
2998 | s->name = names; | |
2999 | *names++ = '.'; | |
3000 | len = strlen (syms[i]->name); | |
3001 | memcpy (names, syms[i]->name, len + 1); | |
3002 | names += len + 1; | |
6f610d07 UW |
3003 | /* Have udata.p point back to the original symbol this |
3004 | synthetic symbol was derived from. */ | |
3005 | s->udata.p = syms[i]; | |
699733f6 AM |
3006 | s++; |
3007 | } | |
3008 | } | |
3009 | } | |
3010 | else | |
90e3cdf2 | 3011 | { |
468392fb | 3012 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3013 | bfd_byte *contents; |
3014 | size_t size; | |
468392fb AM |
3015 | long plt_count = 0; |
3016 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3017 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3018 | arelent *p; | |
90e3cdf2 | 3019 | |
699733f6 AM |
3020 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3021 | { | |
3022 | if (contents) | |
c9727e01 AM |
3023 | { |
3024 | free_contents_and_exit: | |
3025 | free (contents); | |
3026 | } | |
7356fed5 | 3027 | count = -1; |
c9727e01 | 3028 | goto done; |
699733f6 | 3029 | } |
90e3cdf2 | 3030 | |
699733f6 AM |
3031 | size = 0; |
3032 | for (i = secsymend; i < opdsymend; ++i) | |
3033 | { | |
3034 | bfd_vma ent; | |
90e3cdf2 | 3035 | |
699733f6 AM |
3036 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3037 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3038 | { | |
3039 | ++count; | |
3040 | size += sizeof (asymbol); | |
3041 | size += strlen (syms[i]->name) + 2; | |
3042 | } | |
3043 | } | |
90e3cdf2 | 3044 | |
468392fb | 3045 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3046 | if (dyn_count != 0 |
3047 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3048 | { |
3049 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3050 | size_t extdynsize; | |
3051 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3052 | ||
3053 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3054 | goto free_contents_and_exit; | |
3055 | ||
3056 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3057 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3058 | ||
3059 | extdyn = dynbuf; | |
3060 | extdynend = extdyn + dynamic->size; | |
3061 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3062 | { | |
3063 | Elf_Internal_Dyn dyn; | |
3064 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3065 | ||
3066 | if (dyn.d_tag == DT_NULL) | |
3067 | break; | |
3068 | ||
3069 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3070 | { | |
3071 | /* The first glink stub starts at offset 32; see comment in | |
3072 | ppc64_elf_finish_dynamic_sections. */ | |
3073 | glink_vma = dyn.d_un.d_val + 32; | |
3074 | /* The .glink section usually does not survive the final | |
3075 | link; search for the section (usually .text) where the | |
3076 | glink stubs now reside. */ | |
3077 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3078 | &glink_vma); | |
3079 | break; | |
3080 | } | |
3081 | } | |
3082 | ||
3083 | free (dynbuf); | |
3084 | } | |
3085 | ||
3086 | if (glink != NULL) | |
3087 | { | |
3088 | /* Determine __glink trampoline by reading the relative branch | |
3089 | from the first glink stub. */ | |
3090 | bfd_byte buf[4]; | |
3091 | if (bfd_get_section_contents (abfd, glink, buf, | |
3092 | glink_vma + 4 - glink->vma, 4)) | |
3093 | { | |
3094 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3095 | insn ^= B_DOT; | |
3096 | if ((insn & ~0x3fffffc) == 0) | |
3097 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3098 | } | |
3099 | ||
3100 | if (resolv_vma) | |
3101 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3102 | |
066ee829 AM |
3103 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3104 | if (relplt != NULL) | |
3105 | { | |
3106 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3107 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3108 | goto free_contents_and_exit; | |
468392fb | 3109 | |
066ee829 AM |
3110 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3111 | size += plt_count * sizeof (asymbol); | |
468392fb | 3112 | |
066ee829 AM |
3113 | p = relplt->relocation; |
3114 | for (i = 0; i < plt_count; i++, p++) | |
3115 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3116 | } | |
468392fb AM |
3117 | } |
3118 | ||
699733f6 AM |
3119 | s = *ret = bfd_malloc (size); |
3120 | if (s == NULL) | |
7356fed5 | 3121 | goto free_contents_and_exit; |
90e3cdf2 | 3122 | |
468392fb | 3123 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3124 | |
699733f6 | 3125 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3126 | { |
699733f6 | 3127 | bfd_vma ent; |
90e3cdf2 | 3128 | |
699733f6 AM |
3129 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3130 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3131 | { |
c9727e01 | 3132 | long lo, hi; |
699733f6 | 3133 | size_t len; |
c9727e01 | 3134 | asection *sec = abfd->sections; |
90e3cdf2 | 3135 | |
699733f6 AM |
3136 | *s = *syms[i]; |
3137 | lo = codesecsym; | |
3138 | hi = codesecsymend; | |
3139 | while (lo < hi) | |
3140 | { | |
c9727e01 | 3141 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3142 | if (syms[mid]->section->vma < ent) |
3143 | lo = mid + 1; | |
3144 | else if (syms[mid]->section->vma > ent) | |
3145 | hi = mid; | |
3146 | else | |
c9727e01 AM |
3147 | { |
3148 | sec = syms[mid]->section; | |
3149 | break; | |
3150 | } | |
699733f6 AM |
3151 | } |
3152 | ||
c9727e01 | 3153 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3154 | sec = syms[lo - 1]->section; |
699733f6 AM |
3155 | |
3156 | for (; sec != NULL; sec = sec->next) | |
3157 | { | |
3158 | if (sec->vma > ent) | |
3159 | break; | |
3160 | if ((sec->flags & SEC_ALLOC) == 0 | |
3161 | || (sec->flags & SEC_LOAD) == 0) | |
3162 | break; | |
3163 | if ((sec->flags & SEC_CODE) != 0) | |
3164 | s->section = sec; | |
3165 | } | |
6ba2a415 | 3166 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3167 | s->value = ent - s->section->vma; |
3168 | s->name = names; | |
3169 | *names++ = '.'; | |
3170 | len = strlen (syms[i]->name); | |
3171 | memcpy (names, syms[i]->name, len + 1); | |
3172 | names += len + 1; | |
6f610d07 UW |
3173 | /* Have udata.p point back to the original symbol this |
3174 | synthetic symbol was derived from. */ | |
3175 | s->udata.p = syms[i]; | |
699733f6 | 3176 | s++; |
90e3cdf2 | 3177 | } |
90e3cdf2 | 3178 | } |
699733f6 | 3179 | free (contents); |
468392fb AM |
3180 | |
3181 | if (glink != NULL && relplt != NULL) | |
3182 | { | |
3183 | if (resolv_vma) | |
3184 | { | |
3185 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3186 | memset (s, 0, sizeof *s); |
468392fb | 3187 | s->the_bfd = abfd; |
6ba2a415 | 3188 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3189 | s->section = glink; |
3190 | s->value = resolv_vma - glink->vma; | |
3191 | s->name = names; | |
3192 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3193 | names += sizeof ("__glink_PLTresolve"); | |
3194 | s++; | |
3195 | count++; | |
3196 | } | |
3197 | ||
3198 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3199 | stub rather than on the glink branch table entry. The | |
3200 | objdump disassembler would then use a sensible symbol | |
3201 | name on plt calls. The difficulty in doing so is | |
3202 | a) finding the stubs, and, | |
3203 | b) matching stubs against plt entries, and, | |
3204 | c) there can be multiple stubs for a given plt entry. | |
3205 | ||
3206 | Solving (a) could be done by code scanning, but older | |
3207 | ppc64 binaries used different stubs to current code. | |
3208 | (b) is the tricky one since you need to known the toc | |
3209 | pointer for at least one function that uses a pic stub to | |
3210 | be able to calculate the plt address referenced. | |
3211 | (c) means gdb would need to set multiple breakpoints (or | |
3212 | find the glink branch itself) when setting breakpoints | |
3213 | for pending shared library loads. */ | |
3214 | p = relplt->relocation; | |
3215 | for (i = 0; i < plt_count; i++, p++) | |
3216 | { | |
3217 | size_t len; | |
3218 | ||
3219 | *s = **p->sym_ptr_ptr; | |
3220 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3221 | we are defining a symbol, ensure one of them is set. */ | |
3222 | if ((s->flags & BSF_LOCAL) == 0) | |
3223 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3224 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3225 | s->section = glink; |
3226 | s->value = glink_vma - glink->vma; | |
3227 | s->name = names; | |
3228 | s->udata.p = NULL; | |
3229 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3230 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3231 | names += len; | |
3232 | memcpy (names, "@plt", sizeof ("@plt")); | |
3233 | names += sizeof ("@plt"); | |
3234 | s++; | |
3235 | glink_vma += 8; | |
3236 | if (i >= 0x8000) | |
3237 | glink_vma += 4; | |
3238 | } | |
3239 | count += plt_count; | |
3240 | } | |
90e3cdf2 JJ |
3241 | } |
3242 | ||
c9727e01 | 3243 | done: |
a7535cf3 | 3244 | free (syms); |
90e3cdf2 JJ |
3245 | return count; |
3246 | } | |
5bd4f169 | 3247 | \f |
65f38f15 AM |
3248 | /* The following functions are specific to the ELF linker, while |
3249 | functions above are used generally. Those named ppc64_elf_* are | |
3250 | called by the main ELF linker code. They appear in this file more | |
3251 | or less in the order in which they are called. eg. | |
3252 | ppc64_elf_check_relocs is called early in the link process, | |
3253 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3254 | called. |
3255 | ||
3256 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3257 | functions have both a function code symbol and a function descriptor | |
3258 | symbol. A call to foo in a relocatable object file looks like: | |
3259 | ||
3260 | . .text | |
3261 | . x: | |
3262 | . bl .foo | |
3263 | . nop | |
3264 | ||
3265 | The function definition in another object file might be: | |
3266 | ||
3267 | . .section .opd | |
3268 | . foo: .quad .foo | |
3269 | . .quad .TOC.@tocbase | |
3270 | . .quad 0 | |
3271 | . | |
3272 | . .text | |
3273 | . .foo: blr | |
3274 | ||
3275 | When the linker resolves the call during a static link, the branch | |
3276 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3277 | If the function definition is in a shared library, things are a little | |
3278 | different: The call goes via a plt call stub, the opd information gets | |
3279 | copied to the plt, and the linker patches the nop. | |
3280 | ||
3281 | . x: | |
3282 | . bl .foo_stub | |
3283 | . ld 2,40(1) | |
3284 | . | |
3285 | . | |
3286 | . .foo_stub: | |
3287 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3288 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3289 | . std 2,40(1) # this is the general idea |
3290 | . ld 11,0(12) | |
3291 | . ld 2,8(12) | |
3292 | . mtctr 11 | |
3293 | . ld 11,16(12) | |
3294 | . bctr | |
3295 | . | |
3296 | . .section .plt | |
3297 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3298 | ||
3299 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3300 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3301 | copying. | |
3302 | ||
3303 | What are the difficulties here? Well, firstly, the relocations | |
3304 | examined by the linker in check_relocs are against the function code | |
3305 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3306 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3307 | to carefully copy dynamic link information from one symbol to the other. | |
3308 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3309 | symbol as is normal for most other backends. We need foo dynamic | |
3310 | instead, at least for an application final link. However, when | |
3311 | creating a shared library containing foo, we need to have both symbols | |
3312 | dynamic so that references to .foo are satisfied during the early | |
3313 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3314 | definition from some other object, eg. a static library. |
3315 | ||
3316 | Update: As of August 2004, we support a new convention. Function | |
3317 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3318 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3319 | |
3320 | /* The linker needs to keep track of the number of relocs that it | |
3321 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3322 | This is so that it can later discard them if they are found to be | |
3323 | unnecessary. We store the information in a field extending the | |
3324 | regular ELF linker hash table. */ | |
3325 | ||
3326 | struct ppc_dyn_relocs | |
3327 | { | |
3328 | struct ppc_dyn_relocs *next; | |
3329 | ||
3330 | /* The input section of the reloc. */ | |
3331 | asection *sec; | |
3332 | ||
3333 | /* Total number of relocs copied for the input section. */ | |
3334 | bfd_size_type count; | |
3335 | ||
3336 | /* Number of pc-relative relocs copied for the input section. */ | |
3337 | bfd_size_type pc_count; | |
3338 | }; | |
3339 | ||
411e1bfb AM |
3340 | /* Track GOT entries needed for a given symbol. We might need more |
3341 | than one got entry per symbol. */ | |
3342 | struct got_entry | |
3343 | { | |
3344 | struct got_entry *next; | |
3345 | ||
e7b938ca | 3346 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3347 | bfd_vma addend; |
3348 | ||
e717da7e AM |
3349 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3350 | symbol referenced from different input files. This is to support | |
3351 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3352 | from one input file to another. FIXME: After group_sections we |
3353 | ought to merge entries within the group. | |
e717da7e AM |
3354 | |
3355 | Point to the BFD owning this GOT entry. */ | |
3356 | bfd *owner; | |
3357 | ||
3358 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3359 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3360 | char tls_type; | |
3361 | ||
e7b938ca | 3362 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3363 | union |
3364 | { | |
3365 | bfd_signed_vma refcount; | |
3366 | bfd_vma offset; | |
3367 | } got; | |
411e1bfb AM |
3368 | }; |
3369 | ||
3370 | /* The same for PLT. */ | |
3371 | struct plt_entry | |
3372 | { | |
3373 | struct plt_entry *next; | |
3374 | ||
3375 | bfd_vma addend; | |
3376 | ||
3377 | union | |
3378 | { | |
3379 | bfd_signed_vma refcount; | |
3380 | bfd_vma offset; | |
3381 | } plt; | |
3382 | }; | |
3383 | ||
1d483afe | 3384 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3385 | selects those that must be copied when linking a shared library, |
3386 | even when the symbol is local. */ | |
65f38f15 | 3387 | |
1d483afe AM |
3388 | static int |
3389 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3390 | enum elf_ppc64_reloc_type r_type) | |
3391 | { | |
3392 | switch (r_type) | |
3393 | { | |
3394 | default: | |
3395 | return 1; | |
3396 | ||
3397 | case R_PPC64_REL32: | |
3398 | case R_PPC64_REL64: | |
3399 | case R_PPC64_REL30: | |
3400 | return 0; | |
3401 | ||
3402 | case R_PPC64_TPREL16: | |
3403 | case R_PPC64_TPREL16_LO: | |
3404 | case R_PPC64_TPREL16_HI: | |
3405 | case R_PPC64_TPREL16_HA: | |
3406 | case R_PPC64_TPREL16_DS: | |
3407 | case R_PPC64_TPREL16_LO_DS: | |
3408 | case R_PPC64_TPREL16_HIGHER: | |
3409 | case R_PPC64_TPREL16_HIGHERA: | |
3410 | case R_PPC64_TPREL16_HIGHEST: | |
3411 | case R_PPC64_TPREL16_HIGHESTA: | |
3412 | case R_PPC64_TPREL64: | |
3413 | return !info->executable; | |
3414 | } | |
3415 | } | |
65f38f15 | 3416 | |
f4656909 AM |
3417 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3418 | copying dynamic variables from a shared lib into an app's dynbss | |
3419 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3420 | shared lib. With code that gcc generates, it's vital that this be |
3421 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3422 | the address of a function descriptor, which resides in the .opd | |
3423 | section. gcc uses the descriptor directly rather than going via the | |
3424 | GOT as some other ABI's do, which means that initialized function | |
3425 | pointers must reference the descriptor. Thus, a function pointer | |
3426 | initialized to the address of a function in a shared library will | |
3427 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3428 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3429 | presents a problem as a plt entry for that function is also |
3430 | initialized from the function descriptor symbol and the copy reloc | |
3431 | may not be initialized first. */ | |
a23b6845 | 3432 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3433 | |
721956f4 AM |
3434 | /* Section name for stubs is the associated section name plus this |
3435 | string. */ | |
3436 | #define STUB_SUFFIX ".stub" | |
3437 | ||
3438 | /* Linker stubs. | |
3439 | ppc_stub_long_branch: | |
3440 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3441 | destination, but a 24 bit branch in a stub section will reach. | |
3442 | . b dest | |
3443 | ||
3444 | ppc_stub_plt_branch: | |
3445 | Similar to the above, but a 24 bit branch in the stub section won't | |
3446 | reach its destination. | |
87e226ce AM |
3447 | . addis %r12,%r2,xxx@toc@ha |
3448 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3449 | . mtctr %r11 |
3450 | . bctr | |
3451 | ||
3452 | ppc_stub_plt_call: | |
2c66dc6c AM |
3453 | Used to call a function in a shared library. If it so happens that |
3454 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3455 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3456 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3457 | . std %r2,40(%r1) |
87e226ce | 3458 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3459 | . mtctr %r11 |
ac2df442 | 3460 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3461 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3462 | . bctr |
ad8e1ba5 AM |
3463 | |
3464 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3465 | code to adjust the value and save r2 to support multiple toc sections. | |
3466 | A ppc_stub_long_branch with an r2 offset looks like: | |
3467 | . std %r2,40(%r1) | |
3468 | . addis %r2,%r2,off@ha | |
3469 | . addi %r2,%r2,off@l | |
3470 | . b dest | |
3471 | ||
3472 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3473 | . std %r2,40(%r1) | |
3474 | . addis %r12,%r2,xxx@toc@ha | |
3475 | . ld %r11,xxx@toc@l(%r12) | |
3476 | . addis %r2,%r2,off@ha | |
3477 | . addi %r2,%r2,off@l | |
3478 | . mtctr %r11 | |
3479 | . bctr | |
ac2df442 AM |
3480 | |
3481 | In cases where the "addis" instruction would add zero, the "addis" is | |
3482 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3483 | */ |
3484 | ||
3485 | enum ppc_stub_type { | |
3486 | ppc_stub_none, | |
3487 | ppc_stub_long_branch, | |
ad8e1ba5 | 3488 | ppc_stub_long_branch_r2off, |
721956f4 | 3489 | ppc_stub_plt_branch, |
ad8e1ba5 | 3490 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3491 | ppc_stub_plt_call |
3492 | }; | |
3493 | ||
3494 | struct ppc_stub_hash_entry { | |
3495 | ||
3496 | /* Base hash table entry structure. */ | |
3497 | struct bfd_hash_entry root; | |
3498 | ||
ad8e1ba5 AM |
3499 | enum ppc_stub_type stub_type; |
3500 | ||
721956f4 AM |
3501 | /* The stub section. */ |
3502 | asection *stub_sec; | |
3503 | ||
3504 | /* Offset within stub_sec of the beginning of this stub. */ | |
3505 | bfd_vma stub_offset; | |
3506 | ||
3507 | /* Given the symbol's value and its section we can determine its final | |
3508 | value when building the stubs (so the stub knows where to jump. */ | |
3509 | bfd_vma target_value; | |
3510 | asection *target_section; | |
3511 | ||
721956f4 AM |
3512 | /* The symbol table entry, if any, that this was derived from. */ |
3513 | struct ppc_link_hash_entry *h; | |
3514 | ||
411e1bfb AM |
3515 | /* And the reloc addend that this was derived from. */ |
3516 | bfd_vma addend; | |
3517 | ||
721956f4 AM |
3518 | /* Where this stub is being called from, or, in the case of combined |
3519 | stub sections, the first input section in the group. */ | |
3520 | asection *id_sec; | |
3521 | }; | |
3522 | ||
3523 | struct ppc_branch_hash_entry { | |
3524 | ||
3525 | /* Base hash table entry structure. */ | |
3526 | struct bfd_hash_entry root; | |
3527 | ||
c456f082 | 3528 | /* Offset within branch lookup table. */ |
721956f4 AM |
3529 | unsigned int offset; |
3530 | ||
3531 | /* Generation marker. */ | |
3532 | unsigned int iter; | |
3533 | }; | |
65f38f15 AM |
3534 | |
3535 | struct ppc_link_hash_entry | |
3536 | { | |
3537 | struct elf_link_hash_entry elf; | |
3538 | ||
b3fac117 AM |
3539 | union { |
3540 | /* A pointer to the most recently used stub hash entry against this | |
3541 | symbol. */ | |
3542 | struct ppc_stub_hash_entry *stub_cache; | |
3543 | ||
3544 | /* A pointer to the next symbol starting with a '.' */ | |
3545 | struct ppc_link_hash_entry *next_dot_sym; | |
3546 | } u; | |
721956f4 | 3547 | |
65f38f15 AM |
3548 | /* Track dynamic relocs copied for this symbol. */ |
3549 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3550 | |
721956f4 | 3551 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3552 | struct ppc_link_hash_entry *oh; |
721956f4 | 3553 | |
e86ce104 AM |
3554 | /* Flag function code and descriptor symbols. */ |
3555 | unsigned int is_func:1; | |
3556 | unsigned int is_func_descriptor:1; | |
908b32fc | 3557 | unsigned int fake:1; |
411e1bfb | 3558 | |
c5614fa4 AM |
3559 | /* Whether global opd/toc sym has been adjusted or not. |
3560 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3561 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3562 | unsigned int adjust_done:1; |
3563 | ||
99877b66 AM |
3564 | /* Set if we twiddled this symbol to weak at some stage. */ |
3565 | unsigned int was_undefined:1; | |
3566 | ||
411e1bfb | 3567 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3568 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3569 | corresponding relocs are encountered during check_relocs. | |
3570 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3571 | indicate the corresponding GOT entry type is not needed. | |
3572 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3573 | a TPREL one. We use a separate flag rather than setting TPREL | |
3574 | just for convenience in distinguishing the two cases. */ | |
3575 | #define TLS_GD 1 /* GD reloc. */ | |
3576 | #define TLS_LD 2 /* LD reloc. */ | |
3577 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3578 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3579 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3580 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3581 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3582 | char tls_mask; | |
65f38f15 AM |
3583 | }; |
3584 | ||
3585 | /* ppc64 ELF linker hash table. */ | |
3586 | ||
3587 | struct ppc_link_hash_table | |
3588 | { | |
3589 | struct elf_link_hash_table elf; | |
3590 | ||
721956f4 AM |
3591 | /* The stub hash table. */ |
3592 | struct bfd_hash_table stub_hash_table; | |
3593 | ||
3594 | /* Another hash table for plt_branch stubs. */ | |
3595 | struct bfd_hash_table branch_hash_table; | |
3596 | ||
3597 | /* Linker stub bfd. */ | |
3598 | bfd *stub_bfd; | |
3599 | ||
3600 | /* Linker call-backs. */ | |
4ce794b7 AM |
3601 | asection * (*add_stub_section) (const char *, asection *); |
3602 | void (*layout_sections_again) (void); | |
721956f4 AM |
3603 | |
3604 | /* Array to keep track of which stub sections have been created, and | |
3605 | information on stub grouping. */ | |
3606 | struct map_stub { | |
3607 | /* This is the section to which stubs in the group will be attached. */ | |
3608 | asection *link_sec; | |
3609 | /* The stub section. */ | |
3610 | asection *stub_sec; | |
ad8e1ba5 AM |
3611 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3612 | bfd_vma toc_off; | |
721956f4 AM |
3613 | } *stub_group; |
3614 | ||
ad8e1ba5 AM |
3615 | /* Temp used when calculating TOC pointers. */ |
3616 | bfd_vma toc_curr; | |
3617 | ||
8f3bab57 AM |
3618 | /* Highest input section id. */ |
3619 | int top_id; | |
3620 | ||
734b6cf9 AM |
3621 | /* Highest output section index. */ |
3622 | int top_index; | |
3623 | ||
b3fac117 AM |
3624 | /* Used when adding symbols. */ |
3625 | struct ppc_link_hash_entry *dot_syms; | |
3626 | ||
734b6cf9 AM |
3627 | /* List of input sections for each output section. */ |
3628 | asection **input_list; | |
721956f4 | 3629 | |
65f38f15 | 3630 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3631 | asection *got; |
4ce794b7 AM |
3632 | asection *plt; |
3633 | asection *relplt; | |
3634 | asection *dynbss; | |
3635 | asection *relbss; | |
3636 | asection *glink; | |
82bd7b59 | 3637 | asection *sfpr; |
4ce794b7 AM |
3638 | asection *brlt; |
3639 | asection *relbrlt; | |
ec338859 | 3640 | |
8387904d AM |
3641 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3642 | struct ppc_link_hash_entry *tls_get_addr; | |
3643 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3644 | |
9b5ecbd0 AM |
3645 | /* Statistics. */ |
3646 | unsigned long stub_count[ppc_stub_plt_call]; | |
3647 | ||
ee75fd95 AM |
3648 | /* Number of stubs against global syms. */ |
3649 | unsigned long stub_globals; | |
3650 | ||
ad8e1ba5 | 3651 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3652 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3653 | |
4c52953f AM |
3654 | /* Support for multiple toc sections. */ |
3655 | unsigned int no_multi_toc:1; | |
3656 | unsigned int multi_toc_needed:1; | |
3657 | ||
5d1634d7 | 3658 | /* Set on error. */ |
99877b66 | 3659 | unsigned int stub_error:1; |
721956f4 | 3660 | |
7d9616d7 | 3661 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3662 | unsigned int twiddled_syms:1; |
721956f4 AM |
3663 | |
3664 | /* Incremented every time we size stubs. */ | |
3665 | unsigned int stub_iteration; | |
5d1634d7 | 3666 | |
ec338859 AM |
3667 | /* Small local sym to section mapping cache. */ |
3668 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3669 | }; |
3670 | ||
4c52953f AM |
3671 | /* Rename some of the generic section flags to better document how they |
3672 | are used here. */ | |
3673 | #define has_toc_reloc has_gp_reloc | |
3674 | #define makes_toc_func_call need_finalize_relax | |
3675 | #define call_check_in_progress reloc_done | |
3676 | ||
65f38f15 AM |
3677 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3678 | ||
3679 | #define ppc_hash_table(p) \ | |
3680 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3681 | ||
721956f4 AM |
3682 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3683 | ((struct ppc_stub_hash_entry *) \ | |
3684 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3685 | ||
3686 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3687 | ((struct ppc_branch_hash_entry *) \ | |
3688 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3689 | ||
3690 | /* Create an entry in the stub hash table. */ | |
3691 | ||
3692 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3693 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3694 | struct bfd_hash_table *table, | |
3695 | const char *string) | |
721956f4 AM |
3696 | { |
3697 | /* Allocate the structure if it has not already been allocated by a | |
3698 | subclass. */ | |
3699 | if (entry == NULL) | |
3700 | { | |
3701 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3702 | if (entry == NULL) | |
3703 | return entry; | |
3704 | } | |
3705 | ||
3706 | /* Call the allocation method of the superclass. */ | |
3707 | entry = bfd_hash_newfunc (entry, table, string); | |
3708 | if (entry != NULL) | |
3709 | { | |
3710 | struct ppc_stub_hash_entry *eh; | |
3711 | ||
3712 | /* Initialize the local fields. */ | |
3713 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3714 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3715 | eh->stub_sec = NULL; |
3716 | eh->stub_offset = 0; | |
3717 | eh->target_value = 0; | |
3718 | eh->target_section = NULL; | |
721956f4 AM |
3719 | eh->h = NULL; |
3720 | eh->id_sec = NULL; | |
3721 | } | |
3722 | ||
3723 | return entry; | |
3724 | } | |
3725 | ||
3726 | /* Create an entry in the branch hash table. */ | |
3727 | ||
3728 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3729 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3730 | struct bfd_hash_table *table, | |
3731 | const char *string) | |
721956f4 AM |
3732 | { |
3733 | /* Allocate the structure if it has not already been allocated by a | |
3734 | subclass. */ | |
3735 | if (entry == NULL) | |
3736 | { | |
3737 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3738 | if (entry == NULL) | |
3739 | return entry; | |
3740 | } | |
3741 | ||
3742 | /* Call the allocation method of the superclass. */ | |
3743 | entry = bfd_hash_newfunc (entry, table, string); | |
3744 | if (entry != NULL) | |
3745 | { | |
3746 | struct ppc_branch_hash_entry *eh; | |
3747 | ||
3748 | /* Initialize the local fields. */ | |
3749 | eh = (struct ppc_branch_hash_entry *) entry; | |
3750 | eh->offset = 0; | |
3751 | eh->iter = 0; | |
3752 | } | |
3753 | ||
3754 | return entry; | |
3755 | } | |
3756 | ||
65f38f15 AM |
3757 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3758 | ||
3759 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3760 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3761 | struct bfd_hash_table *table, | |
3762 | const char *string) | |
65f38f15 AM |
3763 | { |
3764 | /* Allocate the structure if it has not already been allocated by a | |
3765 | subclass. */ | |
3766 | if (entry == NULL) | |
3767 | { | |
3768 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3769 | if (entry == NULL) | |
3770 | return entry; | |
3771 | } | |
3772 | ||
3773 | /* Call the allocation method of the superclass. */ | |
3774 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3775 | if (entry != NULL) | |
3776 | { | |
3777 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3778 | ||
b3fac117 | 3779 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3780 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3781 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3782 | ||
3783 | /* When making function calls, old ABI code references function entry | |
3784 | points (dot symbols), while new ABI code references the function | |
3785 | descriptor symbol. We need to make any combination of reference and | |
3786 | definition work together, without breaking archive linking. | |
3787 | ||
3788 | For a defined function "foo" and an undefined call to "bar": | |
3789 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3790 | "bar" too). | |
3791 | A new object defines "foo" and references "bar". | |
3792 | ||
3793 | A new object thus has no problem with its undefined symbols being | |
3794 | satisfied by definitions in an old object. On the other hand, the | |
3795 | old object won't have ".bar" satisfied by a new object. | |
3796 | ||
3797 | Keep a list of newly added dot-symbols. */ | |
3798 | ||
3799 | if (string[0] == '.') | |
3800 | { | |
3801 | struct ppc_link_hash_table *htab; | |
3802 | ||
3803 | htab = (struct ppc_link_hash_table *) table; | |
3804 | eh->u.next_dot_sym = htab->dot_syms; | |
3805 | htab->dot_syms = eh; | |
3806 | } | |
65f38f15 AM |
3807 | } |
3808 | ||
3809 | return entry; | |
3810 | } | |
3811 | ||
3812 | /* Create a ppc64 ELF linker hash table. */ | |
3813 | ||
3814 | static struct bfd_link_hash_table * | |
4ce794b7 | 3815 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3816 | { |
3817 | struct ppc_link_hash_table *htab; | |
3818 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3819 | ||
4ce794b7 | 3820 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3821 | if (htab == NULL) |
3822 | return NULL; | |
3823 | ||
66eb6687 AM |
3824 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3825 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3826 | { |
e2d34d7d | 3827 | free (htab); |
65f38f15 AM |
3828 | return NULL; |
3829 | } | |
3830 | ||
721956f4 | 3831 | /* Init the stub hash table too. */ |
66eb6687 AM |
3832 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3833 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3834 | return NULL; |
3835 | ||
3836 | /* And the branch hash table. */ | |
66eb6687 AM |
3837 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3838 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3839 | return NULL; |
3840 | ||
3254fd24 AM |
3841 | /* Initializing two fields of the union is just cosmetic. We really |
3842 | only care about glist, but when compiled on a 32-bit host the | |
3843 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3844 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3845 | htab->elf.init_got_refcount.refcount = 0; |
3846 | htab->elf.init_got_refcount.glist = NULL; | |
3847 | htab->elf.init_plt_refcount.refcount = 0; | |
3848 | htab->elf.init_plt_refcount.glist = NULL; | |
3849 | htab->elf.init_got_offset.offset = 0; | |
3850 | htab->elf.init_got_offset.glist = NULL; | |
3851 | htab->elf.init_plt_offset.offset = 0; | |
3852 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3853 | |
65f38f15 AM |
3854 | return &htab->elf.root; |
3855 | } | |
3856 | ||
721956f4 AM |
3857 | /* Free the derived linker hash table. */ |
3858 | ||
3859 | static void | |
4ce794b7 | 3860 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3861 | { |
3862 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3863 | ||
3864 | bfd_hash_table_free (&ret->stub_hash_table); | |
3865 | bfd_hash_table_free (&ret->branch_hash_table); | |
3866 | _bfd_generic_link_hash_table_free (hash); | |
3867 | } | |
3868 | ||
e717da7e AM |
3869 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3870 | ||
3871 | void | |
3872 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3873 | { | |
3874 | struct ppc_link_hash_table *htab; | |
3875 | ||
3876 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3877 | ||
3878 | /* Always hook our dynamic sections into the first bfd, which is the | |
3879 | linker created stub bfd. This ensures that the GOT header is at | |
3880 | the start of the output TOC section. */ | |
3881 | htab = ppc_hash_table (info); | |
3882 | htab->stub_bfd = abfd; | |
3883 | htab->elf.dynobj = abfd; | |
3884 | } | |
3885 | ||
721956f4 AM |
3886 | /* Build a name for an entry in the stub hash table. */ |
3887 | ||
3888 | static char * | |
4ce794b7 AM |
3889 | ppc_stub_name (const asection *input_section, |
3890 | const asection *sym_sec, | |
3891 | const struct ppc_link_hash_entry *h, | |
3892 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3893 | { |
3894 | char *stub_name; | |
3895 | bfd_size_type len; | |
3896 | ||
3897 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3898 | offsets from a sym as a branch target? In fact, we could | |
3899 | probably assume the addend is always zero. */ | |
3900 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3901 | ||
3902 | if (h) | |
3903 | { | |
3904 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3905 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3906 | if (stub_name == NULL) |
3907 | return stub_name; | |
3908 | ||
3909 | sprintf (stub_name, "%08x.%s+%x", | |
3910 | input_section->id & 0xffffffff, | |
3911 | h->elf.root.root.string, | |
3912 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3913 | } |
3914 | else | |
3915 | { | |
ad8e1ba5 | 3916 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3917 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3918 | if (stub_name == NULL) |
3919 | return stub_name; | |
3920 | ||
3921 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3922 | input_section->id & 0xffffffff, | |
3923 | sym_sec->id & 0xffffffff, | |
3924 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3925 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3926 | } |
ee75fd95 AM |
3927 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3928 | stub_name[len - 2] = 0; | |
721956f4 AM |
3929 | return stub_name; |
3930 | } | |
3931 | ||
3932 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3933 | creating the stub name takes a bit of time. */ | |
3934 | ||
3935 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3936 | ppc_get_stub_entry (const asection *input_section, |
3937 | const asection *sym_sec, | |
039b3fef | 3938 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3939 | const Elf_Internal_Rela *rel, |
3940 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3941 | { |
3942 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3943 | const asection *id_sec; |
3944 | ||
3945 | /* If this input section is part of a group of sections sharing one | |
3946 | stub section, then use the id of the first section in the group. | |
3947 | Stub names need to include a section id, as there may well be | |
3948 | more than one stub used to reach say, printf, and we need to | |
3949 | distinguish between them. */ | |
3950 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3951 | ||
b3fac117 AM |
3952 | if (h != NULL && h->u.stub_cache != NULL |
3953 | && h->u.stub_cache->h == h | |
3954 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3955 | { |
b3fac117 | 3956 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3957 | } |
3958 | else | |
3959 | { | |
3960 | char *stub_name; | |
3961 | ||
3962 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3963 | if (stub_name == NULL) | |
3964 | return NULL; | |
3965 | ||
3966 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3967 | stub_name, FALSE, FALSE); |
721956f4 | 3968 | if (h != NULL) |
b3fac117 | 3969 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3970 | |
3971 | free (stub_name); | |
3972 | } | |
3973 | ||
3974 | return stub_entry; | |
3975 | } | |
3976 | ||
3977 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3978 | stub entry are initialised. */ | |
3979 | ||
3980 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3981 | ppc_add_stub (const char *stub_name, |
3982 | asection *section, | |
3983 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3984 | { |
3985 | asection *link_sec; | |
3986 | asection *stub_sec; | |
3987 | struct ppc_stub_hash_entry *stub_entry; | |
3988 | ||
3989 | link_sec = htab->stub_group[section->id].link_sec; | |
3990 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3991 | if (stub_sec == NULL) | |
3992 | { | |
3993 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3994 | if (stub_sec == NULL) | |
3995 | { | |
d4c88bbb | 3996 | size_t namelen; |
721956f4 AM |
3997 | bfd_size_type len; |
3998 | char *s_name; | |
3999 | ||
d4c88bbb AM |
4000 | namelen = strlen (link_sec->name); |
4001 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4002 | s_name = bfd_alloc (htab->stub_bfd, len); |
4003 | if (s_name == NULL) | |
4004 | return NULL; | |
4005 | ||
d4c88bbb AM |
4006 | memcpy (s_name, link_sec->name, namelen); |
4007 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4008 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4009 | if (stub_sec == NULL) | |
4010 | return NULL; | |
4011 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4012 | } | |
4013 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4014 | } | |
4015 | ||
4016 | /* Enter this entry into the linker stub hash table. */ | |
4017 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4018 | TRUE, FALSE); |
721956f4 AM |
4019 | if (stub_entry == NULL) |
4020 | { | |
d003868e AM |
4021 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
4022 | section->owner, stub_name); | |
721956f4 AM |
4023 | return NULL; |
4024 | } | |
4025 | ||
4026 | stub_entry->stub_sec = stub_sec; | |
4027 | stub_entry->stub_offset = 0; | |
4028 | stub_entry->id_sec = link_sec; | |
4029 | return stub_entry; | |
4030 | } | |
4031 | ||
82bd7b59 AM |
4032 | /* Create sections for linker generated code. */ |
4033 | ||
b34976b6 | 4034 | static bfd_boolean |
4ce794b7 | 4035 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4036 | { |
4037 | struct ppc_link_hash_table *htab; | |
4038 | flagword flags; | |
4039 | ||
4040 | htab = ppc_hash_table (info); | |
4041 | ||
4042 | /* Create .sfpr for code to save and restore fp regs. */ | |
4043 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4044 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4045 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4046 | flags); | |
82bd7b59 | 4047 | if (htab->sfpr == NULL |
82bd7b59 | 4048 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4049 | return FALSE; |
82bd7b59 | 4050 | |
721956f4 | 4051 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4052 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4053 | flags); | |
4ce794b7 | 4054 | if (htab->glink == NULL |
ee4bf8d2 | 4055 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4056 | return FALSE; |
82bd7b59 | 4057 | |
c456f082 | 4058 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4059 | flags = (SEC_ALLOC | SEC_LOAD |
4060 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4061 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4062 | flags); | |
4ce794b7 | 4063 | if (htab->brlt == NULL |
4ce794b7 | 4064 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4065 | return FALSE; |
721956f4 | 4066 | |
e4e0193e | 4067 | if (!info->shared) |
c456f082 AM |
4068 | return TRUE; |
4069 | ||
e4e0193e AM |
4070 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4071 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4072 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4073 | ".rela.branch_lt", | |
4074 | flags); | |
c456f082 AM |
4075 | if (!htab->relbrlt |
4076 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4077 | return FALSE; | |
4078 | ||
b34976b6 | 4079 | return TRUE; |
82bd7b59 AM |
4080 | } |
4081 | ||
e717da7e AM |
4082 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4083 | not already done. */ | |
65f38f15 | 4084 | |
b34976b6 | 4085 | static bfd_boolean |
e717da7e | 4086 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4087 | { |
e717da7e AM |
4088 | asection *got, *relgot; |
4089 | flagword flags; | |
4090 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4091 | |
0c8d6e5c | 4092 | if (!is_ppc64_elf (abfd)) |
0ffa91dd NC |
4093 | return FALSE; |
4094 | ||
4ce794b7 | 4095 | if (!htab->got) |
e717da7e AM |
4096 | { |
4097 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4098 | return FALSE; | |
4099 | ||
4100 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4101 | if (!htab->got) | |
4102 | abort (); | |
4103 | } | |
4104 | ||
4105 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4106 | | SEC_LINKER_CREATED); | |
4107 | ||
c456f082 | 4108 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4109 | if (!got |
e717da7e AM |
4110 | || !bfd_set_section_alignment (abfd, got, 3)) |
4111 | return FALSE; | |
65f38f15 | 4112 | |
c456f082 AM |
4113 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4114 | flags | SEC_READONLY); | |
e717da7e | 4115 | if (!relgot |
e717da7e | 4116 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4117 | return FALSE; |
e717da7e AM |
4118 | |
4119 | ppc64_elf_tdata (abfd)->got = got; | |
4120 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4121 | return TRUE; |
65f38f15 | 4122 | } |
5bd4f169 | 4123 | |
82bd7b59 | 4124 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4125 | |
b34976b6 | 4126 | static bfd_boolean |
4ce794b7 | 4127 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4128 | { |
65f38f15 | 4129 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4130 | |
65f38f15 | 4131 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4132 | return FALSE; |
65f38f15 | 4133 | |
e717da7e AM |
4134 | htab = ppc_hash_table (info); |
4135 | if (!htab->got) | |
4136 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4137 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4138 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4139 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4140 | if (!info->shared) |
4ce794b7 | 4141 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4142 | |
e717da7e | 4143 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4144 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4145 | abort (); |
4146 | ||
b34976b6 | 4147 | return TRUE; |
5bd4f169 AM |
4148 | } |
4149 | ||
40d16e0b AM |
4150 | /* Merge PLT info on FROM with that on TO. */ |
4151 | ||
4152 | static void | |
4153 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4154 | struct ppc_link_hash_entry *to) | |
4155 | { | |
4156 | if (from->elf.plt.plist != NULL) | |
4157 | { | |
4158 | if (to->elf.plt.plist != NULL) | |
4159 | { | |
4160 | struct plt_entry **entp; | |
4161 | struct plt_entry *ent; | |
4162 | ||
4163 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4164 | { | |
4165 | struct plt_entry *dent; | |
4166 | ||
4167 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4168 | if (dent->addend == ent->addend) | |
4169 | { | |
4170 | dent->plt.refcount += ent->plt.refcount; | |
4171 | *entp = ent->next; | |
4172 | break; | |
4173 | } | |
4174 | if (dent == NULL) | |
4175 | entp = &ent->next; | |
4176 | } | |
4177 | *entp = to->elf.plt.plist; | |
4178 | } | |
4179 | ||
4180 | to->elf.plt.plist = from->elf.plt.plist; | |
4181 | from->elf.plt.plist = NULL; | |
4182 | } | |
4183 | } | |
4184 | ||
65f38f15 AM |
4185 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4186 | ||
4187 | static void | |
fcfa13d2 AM |
4188 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4189 | struct elf_link_hash_entry *dir, | |
4190 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4191 | { |
4192 | struct ppc_link_hash_entry *edir, *eind; | |
4193 | ||
4194 | edir = (struct ppc_link_hash_entry *) dir; | |
4195 | eind = (struct ppc_link_hash_entry *) ind; | |
4196 | ||
411e1bfb | 4197 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4198 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4199 | { |
bbd7ec4a AM |
4200 | if (edir->dyn_relocs != NULL) |
4201 | { | |
4202 | struct ppc_dyn_relocs **pp; | |
4203 | struct ppc_dyn_relocs *p; | |
4204 | ||
fcfa13d2 | 4205 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4206 | list. Merge any entries against the same section. */ |
4207 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4208 | { | |
4209 | struct ppc_dyn_relocs *q; | |
4210 | ||
4211 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4212 | if (q->sec == p->sec) | |
4213 | { | |
4214 | q->pc_count += p->pc_count; | |
4215 | q->count += p->count; | |
4216 | *pp = p->next; | |
4217 | break; | |
4218 | } | |
4219 | if (q == NULL) | |
4220 | pp = &p->next; | |
4221 | } | |
4222 | *pp = edir->dyn_relocs; | |
4223 | } | |
4224 | ||
65f38f15 AM |
4225 | edir->dyn_relocs = eind->dyn_relocs; |
4226 | eind->dyn_relocs = NULL; | |
4227 | } | |
65f38f15 | 4228 | |
6349e628 AM |
4229 | edir->is_func |= eind->is_func; |
4230 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4231 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4232 | |
81848ca0 | 4233 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4234 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4235 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4236 | if (!(ELIMINATE_COPY_RELOCS |
4237 | && eind->elf.root.type != bfd_link_hash_indirect | |
4238 | && edir->elf.dynamic_adjusted)) | |
4239 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4240 | |
f5385ebf AM |
4241 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4242 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4243 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4244 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4245 | |
4246 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4247 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4248 | return; | |
4249 | ||
81848ca0 AM |
4250 | /* Copy over got entries that we may have already seen to the |
4251 | symbol which just became indirect. */ | |
411e1bfb AM |
4252 | if (eind->elf.got.glist != NULL) |
4253 | { | |
4254 | if (edir->elf.got.glist != NULL) | |
4255 | { | |
4256 | struct got_entry **entp; | |
4257 | struct got_entry *ent; | |
4258 | ||
4259 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4260 | { | |
4261 | struct got_entry *dent; | |
4262 | ||
4263 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4264 | if (dent->addend == ent->addend | |
e717da7e | 4265 | && dent->owner == ent->owner |
411e1bfb AM |
4266 | && dent->tls_type == ent->tls_type) |
4267 | { | |
4268 | dent->got.refcount += ent->got.refcount; | |
4269 | *entp = ent->next; | |
4270 | break; | |
4271 | } | |
4272 | if (dent == NULL) | |
4273 | entp = &ent->next; | |
4274 | } | |
4275 | *entp = edir->elf.got.glist; | |
4276 | } | |
4277 | ||
4278 | edir->elf.got.glist = eind->elf.got.glist; | |
4279 | eind->elf.got.glist = NULL; | |
4280 | } | |
4281 | ||
4282 | /* And plt entries. */ | |
40d16e0b | 4283 | move_plt_plist (eind, edir); |
411e1bfb | 4284 | |
fcfa13d2 | 4285 | if (eind->elf.dynindx != -1) |
411e1bfb | 4286 | { |
fcfa13d2 AM |
4287 | if (edir->elf.dynindx != -1) |
4288 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4289 | edir->elf.dynstr_index); | |
411e1bfb AM |
4290 | edir->elf.dynindx = eind->elf.dynindx; |
4291 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4292 | eind->elf.dynindx = -1; | |
4293 | eind->elf.dynstr_index = 0; | |
4294 | } | |
411e1bfb AM |
4295 | } |
4296 | ||
8387904d AM |
4297 | /* Find the function descriptor hash entry from the given function code |
4298 | hash entry FH. Link the entries via their OH fields. */ | |
4299 | ||
4300 | static struct ppc_link_hash_entry * | |
4301 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4302 | { | |
4303 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4304 | ||
4305 | if (fdh == NULL) | |
4306 | { | |
4307 | const char *fd_name = fh->elf.root.root.string + 1; | |
4308 | ||
4309 | fdh = (struct ppc_link_hash_entry *) | |
4310 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4311 | if (fdh != NULL) | |
4312 | { | |
4313 | fdh->is_func_descriptor = 1; | |
4314 | fdh->oh = fh; | |
4315 | fh->is_func = 1; | |
4316 | fh->oh = fdh; | |
4317 | } | |
4318 | } | |
4319 | ||
4320 | return fdh; | |
4321 | } | |
4322 | ||
bb700d78 AM |
4323 | /* Make a fake function descriptor sym for the code sym FH. */ |
4324 | ||
4325 | static struct ppc_link_hash_entry * | |
4326 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4327 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4328 | { |
4329 | bfd *abfd; | |
4330 | asymbol *newsym; | |
4331 | struct bfd_link_hash_entry *bh; | |
4332 | struct ppc_link_hash_entry *fdh; | |
4333 | ||
4334 | abfd = fh->elf.root.u.undef.abfd; | |
4335 | newsym = bfd_make_empty_symbol (abfd); | |
4336 | newsym->name = fh->elf.root.root.string + 1; | |
4337 | newsym->section = bfd_und_section_ptr; | |
4338 | newsym->value = 0; | |
908b32fc | 4339 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4340 | |
4341 | bh = NULL; | |
4342 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4343 | newsym->flags, newsym->section, | |
4344 | newsym->value, NULL, FALSE, FALSE, | |
4345 | &bh)) | |
4346 | return NULL; | |
4347 | ||
4348 | fdh = (struct ppc_link_hash_entry *) bh; | |
4349 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4350 | fdh->fake = 1; |
4351 | fdh->is_func_descriptor = 1; | |
4352 | fdh->oh = fh; | |
4353 | fh->is_func = 1; | |
4354 | fh->oh = fdh; | |
bb700d78 AM |
4355 | return fdh; |
4356 | } | |
4357 | ||
8387904d AM |
4358 | /* Fix function descriptor symbols defined in .opd sections to be |
4359 | function type. */ | |
555cd476 AM |
4360 | |
4361 | static bfd_boolean | |
b3fac117 | 4362 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4363 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4364 | Elf_Internal_Sym *isym, | |
b3fac117 | 4365 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4366 | flagword *flags ATTRIBUTE_UNUSED, |
4367 | asection **sec, | |
4368 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4369 | { | |
8843416a AM |
4370 | if (*sec != NULL |
4371 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4372 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4373 | |
555cd476 AM |
4374 | return TRUE; |
4375 | } | |
4376 | ||
8387904d | 4377 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4378 | inclusion of a new ABI object archive that defines "bar". |
4379 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4380 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4381 | |
4382 | static struct elf_link_hash_entry * | |
4383 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4384 | struct bfd_link_info *info, | |
4385 | const char *name) | |
4386 | { | |
4387 | struct elf_link_hash_entry *h; | |
4388 | char *dot_name; | |
4389 | size_t len; | |
4390 | ||
4391 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4392 | if (h != NULL |
4393 | /* Don't return this sym if it is a fake function descriptor | |
4394 | created by add_symbol_adjust. */ | |
4395 | && !(h->root.type == bfd_link_hash_undefweak | |
4396 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4397 | return h; |
4398 | ||
4399 | if (name[0] == '.') | |
4400 | return h; | |
4401 | ||
4402 | len = strlen (name); | |
4403 | dot_name = bfd_alloc (abfd, len + 2); | |
4404 | if (dot_name == NULL) | |
4405 | return (struct elf_link_hash_entry *) 0 - 1; | |
4406 | dot_name[0] = '.'; | |
4407 | memcpy (dot_name + 1, name, len + 1); | |
4408 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4409 | bfd_release (abfd, dot_name); | |
4410 | return h; | |
4411 | } | |
4412 | ||
4413 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4414 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4415 | are made weak. This stops later archive searches from including an | |
4416 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4417 | prevents the linker complaining about undefined symbols. |
4418 | We also check and correct mismatched symbol visibility here. The | |
4419 | most restrictive visibility of the function descriptor and the | |
4420 | function entry symbol is used. */ | |
8387904d AM |
4421 | |
4422 | static bfd_boolean | |
b3fac117 | 4423 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4424 | { |
8387904d AM |
4425 | struct ppc_link_hash_table *htab; |
4426 | struct ppc_link_hash_entry *fdh; | |
4427 | ||
b3fac117 | 4428 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4429 | return TRUE; |
4430 | ||
b3fac117 AM |
4431 | if (eh->elf.root.type == bfd_link_hash_warning) |
4432 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4433 | |
b3fac117 AM |
4434 | if (eh->elf.root.root.string[0] != '.') |
4435 | abort (); | |
8387904d | 4436 | |
b3fac117 | 4437 | htab = ppc_hash_table (info); |
99877b66 | 4438 | fdh = get_fdh (eh, htab); |
bb700d78 | 4439 | if (fdh == NULL |
b3fac117 | 4440 | && !info->relocatable |
bb700d78 AM |
4441 | && (eh->elf.root.type == bfd_link_hash_undefined |
4442 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4443 | && eh->elf.ref_regular) | |
4444 | { | |
4445 | /* Make an undefweak function descriptor sym, which is enough to | |
4446 | pull in an --as-needed shared lib, but won't cause link | |
4447 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4448 | fdh = make_fdh (info, eh); |
bb700d78 | 4449 | if (fdh == NULL) |
b3fac117 | 4450 | return FALSE; |
bb700d78 AM |
4451 | else |
4452 | fdh->elf.ref_regular = 1; | |
4453 | } | |
e87d886e | 4454 | else if (fdh != NULL) |
8387904d | 4455 | { |
35b0ce59 AM |
4456 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4457 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4458 | if (entry_vis < descr_vis) | |
4459 | fdh->elf.other += entry_vis - descr_vis; | |
4460 | else if (entry_vis > descr_vis) | |
4461 | eh->elf.other += descr_vis - entry_vis; | |
4462 | ||
e87d886e AM |
4463 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4464 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4465 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4466 | { |
4467 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4468 | eh->was_undefined = 1; | |
4469 | htab->twiddled_syms = 1; | |
4470 | } | |
8387904d | 4471 | } |
99877b66 | 4472 | |
8387904d AM |
4473 | return TRUE; |
4474 | } | |
4475 | ||
b3fac117 AM |
4476 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4477 | ||
8387904d | 4478 | static bfd_boolean |
7d9616d7 | 4479 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4480 | { |
99877b66 | 4481 | struct ppc_link_hash_table *htab; |
b3fac117 | 4482 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4483 | |
99877b66 | 4484 | htab = ppc_hash_table (info); |
0c8d6e5c | 4485 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 AM |
4486 | return TRUE; |
4487 | ||
0c8d6e5c | 4488 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4489 | { |
4490 | p = &htab->dot_syms; | |
4491 | while ((eh = *p) != NULL) | |
4492 | { | |
4493 | *p = NULL; | |
4494 | if (!add_symbol_adjust (eh, info)) | |
4495 | return FALSE; | |
4496 | p = &eh->u.next_dot_sym; | |
4497 | } | |
4498 | } | |
4499 | ||
4500 | /* Clear the list for non-ppc64 input files. */ | |
4501 | p = &htab->dot_syms; | |
4502 | while ((eh = *p) != NULL) | |
4503 | { | |
4504 | *p = NULL; | |
4505 | p = &eh->u.next_dot_sym; | |
4506 | } | |
99877b66 AM |
4507 | |
4508 | /* We need to fix the undefs list for any syms we have twiddled to | |
4509 | undef_weak. */ | |
4510 | if (htab->twiddled_syms) | |
4511 | { | |
77cfaee6 | 4512 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4513 | htab->twiddled_syms = 0; |
4514 | } | |
b3fac117 | 4515 | return TRUE; |
8387904d AM |
4516 | } |
4517 | ||
97fed1c9 JJ |
4518 | /* Undo hash table changes when an --as-needed input file is determined |
4519 | not to be needed. */ | |
4520 | ||
4521 | static bfd_boolean | |
4522 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4523 | struct bfd_link_info *info) | |
4524 | { | |
4525 | ppc_hash_table (info)->dot_syms = NULL; | |
4526 | return TRUE; | |
4527 | } | |
4528 | ||
411e1bfb | 4529 | static bfd_boolean |
4ce794b7 AM |
4530 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4531 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4532 | { |
4533 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4534 | char *local_got_tls_masks; |
411e1bfb AM |
4535 | |
4536 | if (local_got_ents == NULL) | |
4537 | { | |
4538 | bfd_size_type size = symtab_hdr->sh_info; | |
4539 | ||
e7b938ca | 4540 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4541 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4542 | if (local_got_ents == NULL) |
4543 | return FALSE; | |
4544 | elf_local_got_ents (abfd) = local_got_ents; | |
4545 | } | |
4546 | ||
4547 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4548 | { | |
4549 | struct got_entry *ent; | |
4550 | ||
4551 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4552 | if (ent->addend == r_addend |
4553 | && ent->owner == abfd | |
4554 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4555 | break; |
4556 | if (ent == NULL) | |
4557 | { | |
4558 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4559 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4560 | if (ent == NULL) |
4561 | return FALSE; | |
4562 | ent->next = local_got_ents[r_symndx]; | |
4563 | ent->addend = r_addend; | |
e717da7e | 4564 | ent->owner = abfd; |
411e1bfb AM |
4565 | ent->tls_type = tls_type; |
4566 | ent->got.refcount = 0; | |
4567 | local_got_ents[r_symndx] = ent; | |
4568 | } | |
4569 | ent->got.refcount += 1; | |
4570 | } | |
4571 | ||
e7b938ca AM |
4572 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4573 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4574 | return TRUE; |
65f38f15 AM |
4575 | } |
4576 | ||
411e1bfb | 4577 | static bfd_boolean |
4ce794b7 | 4578 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4579 | { |
411e1bfb | 4580 | struct plt_entry *ent; |
1e2f5b6e | 4581 | |
411e1bfb AM |
4582 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4583 | if (ent->addend == addend) | |
4584 | break; | |
4585 | if (ent == NULL) | |
1e2f5b6e | 4586 | { |
411e1bfb | 4587 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4588 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4589 | if (ent == NULL) |
4590 | return FALSE; | |
4591 | ent->next = eh->elf.plt.plist; | |
4592 | ent->addend = addend; | |
4593 | ent->plt.refcount = 0; | |
4594 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4595 | } |
411e1bfb | 4596 | ent->plt.refcount += 1; |
f5385ebf | 4597 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4598 | if (eh->elf.root.root.string[0] == '.' |
4599 | && eh->elf.root.root.string[1] != '\0') | |
4600 | eh->is_func = 1; | |
b34976b6 | 4601 | return TRUE; |
1e2f5b6e AM |
4602 | } |
4603 | ||
5bd4f169 | 4604 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4605 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4606 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4607 | |
b34976b6 | 4608 | static bfd_boolean |
4ce794b7 AM |
4609 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4610 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4611 | { |
65f38f15 | 4612 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4613 | Elf_Internal_Shdr *symtab_hdr; |
4614 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4615 | const Elf_Internal_Rela *rel; | |
4616 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4617 | asection *sreloc; |
1e2f5b6e | 4618 | asection **opd_sym_map; |
3a71aa26 | 4619 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4620 | |
1049f94e | 4621 | if (info->relocatable) |
b34976b6 | 4622 | return TRUE; |
5bd4f169 | 4623 | |
680a3378 AM |
4624 | /* Don't do anything special with non-loaded, non-alloced sections. |
4625 | In particular, any relocs in such sections should not affect GOT | |
4626 | and PLT reference counting (ie. we don't allow them to create GOT | |
4627 | or PLT entries), there's no possibility or desire to optimize TLS | |
4628 | relocs, and there's not much point in propagating relocs to shared | |
4629 | libs that the dynamic linker won't relocate. */ | |
4630 | if ((sec->flags & SEC_ALLOC) == 0) | |
4631 | return TRUE; | |
4632 | ||
0c8d6e5c | 4633 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4634 | |
65f38f15 | 4635 | htab = ppc_hash_table (info); |
3a71aa26 AM |
4636 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4637 | FALSE, FALSE, TRUE); | |
4638 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4639 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4640 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4641 | |
4642 | sym_hashes = elf_sym_hashes (abfd); | |
4643 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4644 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4645 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4646 | |
4647 | sreloc = NULL; | |
1e2f5b6e AM |
4648 | opd_sym_map = NULL; |
4649 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4650 | { | |
4651 | /* Garbage collection needs some extra help with .opd sections. | |
4652 | We don't want to necessarily keep everything referenced by | |
4653 | relocs in .opd, as that would keep all functions. Instead, | |
4654 | if we reference an .opd symbol (a function descriptor), we | |
4655 | want to keep the function code symbol's section. This is | |
4656 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4657 | information about the associated function section. */ |
1e2f5b6e AM |
4658 | bfd_size_type amt; |
4659 | ||
74f0fb50 | 4660 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4661 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4662 | if (opd_sym_map == NULL) |
b34976b6 | 4663 | return FALSE; |
74f0fb50 | 4664 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4665 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4666 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4667 | } |
5bd4f169 | 4668 | |
82bd7b59 AM |
4669 | if (htab->sfpr == NULL |
4670 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4671 | return FALSE; |
82bd7b59 | 4672 | |
5bd4f169 AM |
4673 | rel_end = relocs + sec->reloc_count; |
4674 | for (rel = relocs; rel < rel_end; rel++) | |
4675 | { | |
4676 | unsigned long r_symndx; | |
4677 | struct elf_link_hash_entry *h; | |
04c9666a | 4678 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4679 | int tls_type; |
7c8fe5c4 | 4680 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4681 | |
4682 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4683 | if (r_symndx < symtab_hdr->sh_info) | |
4684 | h = NULL; | |
4685 | else | |
973a3492 L |
4686 | { |
4687 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4688 | while (h->root.type == bfd_link_hash_indirect | |
4689 | || h->root.type == bfd_link_hash_warning) | |
4690 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4691 | } | |
5bd4f169 | 4692 | |
727fc41e | 4693 | tls_type = 0; |
4ce794b7 | 4694 | r_type = ELF64_R_TYPE (rel->r_info); |
727fc41e AM |
4695 | if (h != NULL && (h == tga || h == dottga)) |
4696 | switch (r_type) | |
4697 | { | |
4698 | default: | |
4699 | break; | |
4700 | ||
4701 | case R_PPC64_REL24: | |
4702 | case R_PPC64_REL14: | |
4703 | case R_PPC64_REL14_BRTAKEN: | |
4704 | case R_PPC64_REL14_BRNTAKEN: | |
4705 | case R_PPC64_ADDR24: | |
4706 | case R_PPC64_ADDR14: | |
4707 | case R_PPC64_ADDR14_BRTAKEN: | |
4708 | case R_PPC64_ADDR14_BRNTAKEN: | |
4709 | if (rel != relocs | |
4710 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4711 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4712 | /* We have a new-style __tls_get_addr call with a marker | |
4713 | reloc. */ | |
4714 | ; | |
4715 | else | |
4716 | /* Mark this section as having an old-style call. */ | |
4717 | sec->has_tls_get_addr_call = 1; | |
4718 | break; | |
4719 | } | |
4720 | ||
a33d1f77 | 4721 | switch (r_type) |
5bd4f169 | 4722 | { |
727fc41e AM |
4723 | case R_PPC64_TLSGD: |
4724 | case R_PPC64_TLSLD: | |
4725 | /* These special tls relocs tie a call to __tls_get_addr with | |
4726 | its parameter symbol. */ | |
4727 | break; | |
4728 | ||
411e1bfb AM |
4729 | case R_PPC64_GOT_TLSLD16: |
4730 | case R_PPC64_GOT_TLSLD16_LO: | |
4731 | case R_PPC64_GOT_TLSLD16_HI: | |
4732 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4733 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4734 | goto dogottls; |
4735 | ||
4736 | case R_PPC64_GOT_TLSGD16: | |
4737 | case R_PPC64_GOT_TLSGD16_LO: | |
4738 | case R_PPC64_GOT_TLSGD16_HI: | |
4739 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4740 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4741 | goto dogottls; |
4742 | ||
4743 | case R_PPC64_GOT_TPREL16_DS: | |
4744 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4745 | case R_PPC64_GOT_TPREL16_HI: | |
4746 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4747 | if (!info->executable) |
411e1bfb AM |
4748 | info->flags |= DF_STATIC_TLS; |
4749 | tls_type = TLS_TLS | TLS_TPREL; | |
4750 | goto dogottls; | |
4751 | ||
4752 | case R_PPC64_GOT_DTPREL16_DS: | |
4753 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4754 | case R_PPC64_GOT_DTPREL16_HI: | |
4755 | case R_PPC64_GOT_DTPREL16_HA: | |
4756 | tls_type = TLS_TLS | TLS_DTPREL; | |
4757 | dogottls: | |
4758 | sec->has_tls_reloc = 1; | |
4759 | /* Fall thru */ | |
4760 | ||
5bd4f169 | 4761 | case R_PPC64_GOT16: |
5bd4f169 | 4762 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4763 | case R_PPC64_GOT16_HA: |
4764 | case R_PPC64_GOT16_HI: | |
4765 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4766 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4767 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4768 | sec->has_toc_reloc = 1; |
e717da7e AM |
4769 | if (ppc64_elf_tdata (abfd)->got == NULL |
4770 | && !create_got_section (abfd, info)) | |
b34976b6 | 4771 | return FALSE; |
5bd4f169 AM |
4772 | |
4773 | if (h != NULL) | |
4774 | { | |
411e1bfb AM |
4775 | struct ppc_link_hash_entry *eh; |
4776 | struct got_entry *ent; | |
65f38f15 | 4777 | |
411e1bfb AM |
4778 | eh = (struct ppc_link_hash_entry *) h; |
4779 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4780 | if (ent->addend == rel->r_addend | |
e717da7e | 4781 | && ent->owner == abfd |
411e1bfb AM |
4782 | && ent->tls_type == tls_type) |
4783 | break; | |
4784 | if (ent == NULL) | |
5bd4f169 | 4785 | { |
411e1bfb | 4786 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4787 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4788 | if (ent == NULL) |
b34976b6 | 4789 | return FALSE; |
411e1bfb AM |
4790 | ent->next = eh->elf.got.glist; |
4791 | ent->addend = rel->r_addend; | |
e717da7e | 4792 | ent->owner = abfd; |
411e1bfb AM |
4793 | ent->tls_type = tls_type; |
4794 | ent->got.refcount = 0; | |
4795 | eh->elf.got.glist = ent; | |
5bd4f169 | 4796 | } |
411e1bfb | 4797 | ent->got.refcount += 1; |
e7b938ca | 4798 | eh->tls_mask |= tls_type; |
5bd4f169 | 4799 | } |
411e1bfb AM |
4800 | else |
4801 | /* This is a global offset table entry for a local symbol. */ | |
4802 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4803 | rel->r_addend, tls_type)) | |
4804 | return FALSE; | |
5bd4f169 AM |
4805 | break; |
4806 | ||
5bd4f169 | 4807 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4808 | case R_PPC64_PLT16_HI: |
4809 | case R_PPC64_PLT16_LO: | |
4810 | case R_PPC64_PLT32: | |
4811 | case R_PPC64_PLT64: | |
5bd4f169 | 4812 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4813 | actually build the entry in adjust_dynamic_symbol, |
4814 | because this might be a case of linking PIC code without | |
4815 | linking in any dynamic objects, in which case we don't | |
4816 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4817 | if (h == NULL) |
4818 | { | |
4819 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4820 | table entry for a local symbol. */ |
5bd4f169 | 4821 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4822 | return FALSE; |
5bd4f169 | 4823 | } |
411e1bfb AM |
4824 | else |
4825 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4826 | rel->r_addend)) | |
4827 | return FALSE; | |
5bd4f169 AM |
4828 | break; |
4829 | ||
4830 | /* The following relocations don't need to propagate the | |
4831 | relocation if linking a shared object since they are | |
4832 | section relative. */ | |
4833 | case R_PPC64_SECTOFF: | |
4834 | case R_PPC64_SECTOFF_LO: | |
4835 | case R_PPC64_SECTOFF_HI: | |
4836 | case R_PPC64_SECTOFF_HA: | |
4837 | case R_PPC64_SECTOFF_DS: | |
4838 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4839 | case R_PPC64_DTPREL16: |
4840 | case R_PPC64_DTPREL16_LO: | |
4841 | case R_PPC64_DTPREL16_HI: | |
4842 | case R_PPC64_DTPREL16_HA: | |
4843 | case R_PPC64_DTPREL16_DS: | |
4844 | case R_PPC64_DTPREL16_LO_DS: | |
4845 | case R_PPC64_DTPREL16_HIGHER: | |
4846 | case R_PPC64_DTPREL16_HIGHERA: | |
4847 | case R_PPC64_DTPREL16_HIGHEST: | |
4848 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4849 | break; |
4850 | ||
ad8e1ba5 AM |
4851 | /* Nor do these. */ |
4852 | case R_PPC64_TOC16: | |
4853 | case R_PPC64_TOC16_LO: | |
4854 | case R_PPC64_TOC16_HI: | |
4855 | case R_PPC64_TOC16_HA: | |
4856 | case R_PPC64_TOC16_DS: | |
4857 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4858 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4859 | break; |
4860 | ||
5bd4f169 AM |
4861 | /* This relocation describes the C++ object vtable hierarchy. |
4862 | Reconstruct it for later use during GC. */ | |
4863 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4864 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4865 | return FALSE; |
5bd4f169 AM |
4866 | break; |
4867 | ||
4868 | /* This relocation describes which C++ vtable entries are actually | |
4869 | used. Record for later use during GC. */ | |
4870 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4871 | BFD_ASSERT (h != NULL); |
4872 | if (h != NULL | |
4873 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4874 | return FALSE; |
5bd4f169 AM |
4875 | break; |
4876 | ||
721956f4 AM |
4877 | case R_PPC64_REL14: |
4878 | case R_PPC64_REL14_BRTAKEN: | |
4879 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4880 | { |
4881 | asection *dest = NULL; | |
4882 | ||
4883 | /* Heuristic: If jumping outside our section, chances are | |
4884 | we are going to need a stub. */ | |
4885 | if (h != NULL) | |
4886 | { | |
4887 | /* If the sym is weak it may be overridden later, so | |
4888 | don't assume we know where a weak sym lives. */ | |
4889 | if (h->root.type == bfd_link_hash_defined) | |
4890 | dest = h->root.u.def.section; | |
4891 | } | |
4892 | else | |
4893 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4894 | sec, r_symndx); | |
4895 | if (dest != sec) | |
7c8fe5c4 | 4896 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4897 | } |
721956f4 AM |
4898 | /* Fall through. */ |
4899 | ||
5d1634d7 | 4900 | case R_PPC64_REL24: |
8387904d | 4901 | if (h != NULL) |
5d1634d7 AM |
4902 | { |
4903 | /* We may need a .plt entry if the function this reloc | |
4904 | refers to is in a shared lib. */ | |
411e1bfb AM |
4905 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4906 | rel->r_addend)) | |
4907 | return FALSE; | |
3a71aa26 | 4908 | if (h == tga || h == dottga) |
411e1bfb | 4909 | sec->has_tls_reloc = 1; |
411e1bfb AM |
4910 | } |
4911 | break; | |
4912 | ||
4913 | case R_PPC64_TPREL64: | |
4914 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 4915 | if (!info->executable) |
411e1bfb AM |
4916 | info->flags |= DF_STATIC_TLS; |
4917 | goto dotlstoc; | |
4918 | ||
4919 | case R_PPC64_DTPMOD64: | |
4920 | if (rel + 1 < rel_end | |
4921 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4922 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4923 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4924 | else |
951fd09b | 4925 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4926 | goto dotlstoc; |
4927 | ||
4928 | case R_PPC64_DTPREL64: | |
4929 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4930 | if (rel != relocs | |
4931 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4932 | && rel[-1].r_offset == rel->r_offset - 8) | |
4933 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4934 | Don't mark with TLS_DTPREL. */ | |
4935 | goto dodyn; | |
4936 | ||
4937 | dotlstoc: | |
4938 | sec->has_tls_reloc = 1; | |
4939 | if (h != NULL) | |
4940 | { | |
4941 | struct ppc_link_hash_entry *eh; | |
4942 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4943 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4944 | } |
4945 | else | |
4946 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4947 | rel->r_addend, tls_type)) | |
4948 | return FALSE; | |
4949 | ||
7c8fe5c4 AM |
4950 | ppc64_sec = ppc64_elf_section_data (sec); |
4951 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4952 | { |
3a71aa26 AM |
4953 | bfd_size_type amt; |
4954 | ||
e7b938ca | 4955 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
4956 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
4957 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
4958 | if (ppc64_sec->u.toc.symndx == NULL) | |
4959 | return FALSE; | |
4960 | amt = sec->size * sizeof (bfd_vma) / 8; | |
4961 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
4962 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 4963 | return FALSE; |
7c8fe5c4 AM |
4964 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4965 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4966 | } |
4967 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
4968 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
4969 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
4970 | |
4971 | /* Mark the second slot of a GD or LD entry. | |
4972 | -1 to indicate GD and -2 to indicate LD. */ | |
4973 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 4974 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4975 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 4976 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4977 | goto dodyn; |
4978 | ||
4979 | case R_PPC64_TPREL16: | |
4980 | case R_PPC64_TPREL16_LO: | |
4981 | case R_PPC64_TPREL16_HI: | |
4982 | case R_PPC64_TPREL16_HA: | |
4983 | case R_PPC64_TPREL16_DS: | |
4984 | case R_PPC64_TPREL16_LO_DS: | |
4985 | case R_PPC64_TPREL16_HIGHER: | |
4986 | case R_PPC64_TPREL16_HIGHERA: | |
4987 | case R_PPC64_TPREL16_HIGHEST: | |
4988 | case R_PPC64_TPREL16_HIGHESTA: | |
4989 | if (info->shared) | |
4990 | { | |
1d483afe AM |
4991 | if (!info->executable) |
4992 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 4993 | goto dodyn; |
5d1634d7 AM |
4994 | } |
4995 | break; | |
4996 | ||
e86ce104 | 4997 | case R_PPC64_ADDR64: |
1e2f5b6e | 4998 | if (opd_sym_map != NULL |
1e2f5b6e | 4999 | && rel + 1 < rel_end |
4ce794b7 | 5000 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5001 | { |
8387904d AM |
5002 | if (h != NULL) |
5003 | { | |
5004 | if (h->root.root.string[0] == '.' | |
5005 | && h->root.root.string[1] != 0 | |
5006 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
5007 | ; | |
5008 | else | |
5009 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5010 | } | |
5011 | else | |
5012 | { | |
5013 | asection *s; | |
1e2f5b6e | 5014 | |
8387904d AM |
5015 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
5016 | r_symndx); | |
5017 | if (s == NULL) | |
5018 | return FALSE; | |
5019 | else if (s != sec) | |
3f764659 | 5020 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5021 | } |
1e2f5b6e | 5022 | } |
e86ce104 AM |
5023 | /* Fall through. */ |
5024 | ||
04c9666a | 5025 | case R_PPC64_REL30: |
5bd4f169 | 5026 | case R_PPC64_REL32: |
04c9666a | 5027 | case R_PPC64_REL64: |
65f38f15 AM |
5028 | case R_PPC64_ADDR14: |
5029 | case R_PPC64_ADDR14_BRNTAKEN: | |
5030 | case R_PPC64_ADDR14_BRTAKEN: | |
5031 | case R_PPC64_ADDR16: | |
5032 | case R_PPC64_ADDR16_DS: | |
5033 | case R_PPC64_ADDR16_HA: | |
5034 | case R_PPC64_ADDR16_HI: | |
5035 | case R_PPC64_ADDR16_HIGHER: | |
5036 | case R_PPC64_ADDR16_HIGHERA: | |
5037 | case R_PPC64_ADDR16_HIGHEST: | |
5038 | case R_PPC64_ADDR16_HIGHESTA: | |
5039 | case R_PPC64_ADDR16_LO: | |
5040 | case R_PPC64_ADDR16_LO_DS: | |
5041 | case R_PPC64_ADDR24: | |
65f38f15 | 5042 | case R_PPC64_ADDR32: |
65f38f15 AM |
5043 | case R_PPC64_UADDR16: |
5044 | case R_PPC64_UADDR32: | |
5045 | case R_PPC64_UADDR64: | |
5bd4f169 | 5046 | case R_PPC64_TOC: |
81848ca0 AM |
5047 | if (h != NULL && !info->shared) |
5048 | /* We may need a copy reloc. */ | |
f5385ebf | 5049 | h->non_got_ref = 1; |
81848ca0 | 5050 | |
41bd81ab | 5051 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5052 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5053 | break; |
e86ce104 | 5054 | |
65f38f15 AM |
5055 | /* If we are creating a shared library, and this is a reloc |
5056 | against a global symbol, or a non PC relative reloc | |
5057 | against a local symbol, then we need to copy the reloc | |
5058 | into the shared library. However, if we are linking with | |
5059 | -Bsymbolic, we do not need to copy a reloc against a | |
5060 | global symbol which is defined in an object we are | |
5061 | including in the link (i.e., DEF_REGULAR is set). At | |
5062 | this point we have not seen all the input files, so it is | |
5063 | possible that DEF_REGULAR is not set now but will be set | |
5064 | later (it is never cleared). In case of a weak definition, | |
5065 | DEF_REGULAR may be cleared later by a strong definition in | |
5066 | a shared library. We account for that possibility below by | |
f4656909 | 5067 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5068 | table entry. A similar situation occurs when creating |
5069 | shared libraries and symbol visibility changes render the | |
5070 | symbol local. | |
5071 | ||
5072 | If on the other hand, we are creating an executable, we | |
5073 | may need to keep relocations for symbols satisfied by a | |
5074 | dynamic library if we manage to avoid copy relocs for the | |
5075 | symbol. */ | |
411e1bfb | 5076 | dodyn: |
65f38f15 | 5077 | if ((info->shared |
1d483afe | 5078 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5079 | || (h != NULL |
5080 | && (! info->symbolic | |
5081 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5082 | || !h->def_regular)))) |
f4656909 AM |
5083 | || (ELIMINATE_COPY_RELOCS |
5084 | && !info->shared | |
65f38f15 AM |
5085 | && h != NULL |
5086 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5087 | || !h->def_regular))) |
5bd4f169 | 5088 | { |
ec338859 AM |
5089 | struct ppc_dyn_relocs *p; |
5090 | struct ppc_dyn_relocs **head; | |
5091 | ||
65f38f15 AM |
5092 | /* We must copy these reloc types into the output file. |
5093 | Create a reloc section in dynobj and make room for | |
5094 | this reloc. */ | |
5bd4f169 AM |
5095 | if (sreloc == NULL) |
5096 | { | |
83bac4b0 NC |
5097 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5098 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5099 | |
5bd4f169 | 5100 | if (sreloc == NULL) |
83bac4b0 | 5101 | return FALSE; |
5bd4f169 AM |
5102 | } |
5103 | ||
65f38f15 AM |
5104 | /* If this is a global symbol, we count the number of |
5105 | relocations we need for this symbol. */ | |
5106 | if (h != NULL) | |
5107 | { | |
ec338859 | 5108 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5109 | } |
5110 | else | |
5111 | { | |
ec338859 AM |
5112 | /* Track dynamic relocs needed for local syms too. |
5113 | We really need local syms available to do this | |
5114 | easily. Oh well. */ | |
5115 | ||
5116 | asection *s; | |
6edfbbad DJ |
5117 | void *vpp; |
5118 | ||
ec338859 AM |
5119 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
5120 | sec, r_symndx); | |
5121 | if (s == NULL) | |
b34976b6 | 5122 | return FALSE; |
ec338859 | 5123 | |
6edfbbad DJ |
5124 | vpp = &elf_section_data (s)->local_dynrel; |
5125 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5126 | } |
ec338859 AM |
5127 | |
5128 | p = *head; | |
5129 | if (p == NULL || p->sec != sec) | |
5130 | { | |
4ce794b7 | 5131 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5132 | if (p == NULL) |
b34976b6 | 5133 | return FALSE; |
ec338859 AM |
5134 | p->next = *head; |
5135 | *head = p; | |
5136 | p->sec = sec; | |
5137 | p->count = 0; | |
5138 | p->pc_count = 0; | |
5139 | } | |
5140 | ||
5141 | p->count += 1; | |
1d483afe | 5142 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5143 | p->pc_count += 1; |
65f38f15 | 5144 | } |
5bd4f169 | 5145 | break; |
65f38f15 AM |
5146 | |
5147 | default: | |
96e0dda4 | 5148 | break; |
5bd4f169 AM |
5149 | } |
5150 | } | |
5151 | ||
b34976b6 | 5152 | return TRUE; |
5bd4f169 AM |
5153 | } |
5154 | ||
8387904d AM |
5155 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5156 | of the code entry point, and its section. */ | |
5157 | ||
5158 | static bfd_vma | |
5159 | opd_entry_value (asection *opd_sec, | |
5160 | bfd_vma offset, | |
5161 | asection **code_sec, | |
5162 | bfd_vma *code_off) | |
5163 | { | |
5164 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5165 | Elf_Internal_Rela *relocs; |
8387904d | 5166 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5167 | bfd_vma val; |
8387904d | 5168 | |
4b85d634 AM |
5169 | /* No relocs implies we are linking a --just-symbols object. */ |
5170 | if (opd_sec->reloc_count == 0) | |
5171 | { | |
5172 | bfd_vma val; | |
5173 | ||
5174 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
5175 | return (bfd_vma) -1; | |
3b36f7e6 | 5176 | |
4b85d634 AM |
5177 | if (code_sec != NULL) |
5178 | { | |
5179 | asection *sec, *likely = NULL; | |
5180 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5181 | if (sec->vma <= val | |
5182 | && (sec->flags & SEC_LOAD) != 0 | |
5183 | && (sec->flags & SEC_ALLOC) != 0) | |
5184 | likely = sec; | |
5185 | if (likely != NULL) | |
5186 | { | |
5187 | *code_sec = likely; | |
5188 | if (code_off != NULL) | |
5189 | *code_off = val - likely->vma; | |
5190 | } | |
5191 | } | |
5192 | return val; | |
5193 | } | |
5194 | ||
0c8d6e5c | 5195 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5196 | |
8860955f AM |
5197 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5198 | if (relocs == NULL) | |
5199 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5200 | |
8387904d | 5201 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5202 | lo = relocs; |
8387904d AM |
5203 | BFD_ASSERT (lo != NULL); |
5204 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5205 | val = (bfd_vma) -1; |
8387904d AM |
5206 | while (lo < hi) |
5207 | { | |
5208 | look = lo + (hi - lo) / 2; | |
5209 | if (look->r_offset < offset) | |
5210 | lo = look + 1; | |
5211 | else if (look->r_offset > offset) | |
5212 | hi = look; | |
5213 | else | |
5214 | { | |
0ffa91dd NC |
5215 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5216 | ||
8387904d AM |
5217 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5218 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5219 | { | |
5220 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5221 | asection *sec; |
5222 | ||
5223 | if (symndx < symtab_hdr->sh_info) | |
5224 | { | |
5225 | Elf_Internal_Sym *sym; | |
5226 | ||
5227 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5228 | if (sym == NULL) | |
5229 | { | |
5230 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5231 | symtab_hdr->sh_info, | |
5232 | 0, NULL, NULL, NULL); | |
5233 | if (sym == NULL) | |
645ea6a9 | 5234 | break; |
8387904d AM |
5235 | symtab_hdr->contents = (bfd_byte *) sym; |
5236 | } | |
5237 | ||
5238 | sym += symndx; | |
5239 | val = sym->st_value; | |
cb33740c | 5240 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5241 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5242 | } | |
5243 | else | |
5244 | { | |
5245 | struct elf_link_hash_entry **sym_hashes; | |
5246 | struct elf_link_hash_entry *rh; | |
5247 | ||
5248 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5249 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5250 | while (rh->root.type == bfd_link_hash_indirect | |
5251 | || rh->root.type == bfd_link_hash_warning) | |
5252 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5253 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5254 | || rh->root.type == bfd_link_hash_defweak); | |
5255 | val = rh->root.u.def.value; | |
5256 | sec = rh->root.u.def.section; | |
5257 | } | |
5258 | val += look->r_addend; | |
5259 | if (code_off != NULL) | |
5260 | *code_off = val; | |
5261 | if (code_sec != NULL) | |
5262 | *code_sec = sec; | |
5263 | if (sec != NULL && sec->output_section != NULL) | |
5264 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5265 | } |
5266 | break; | |
5267 | } | |
5268 | } | |
645ea6a9 | 5269 | |
645ea6a9 | 5270 | return val; |
8387904d AM |
5271 | } |
5272 | ||
74f0fb50 AM |
5273 | /* Mark all our entry sym sections, both opd and code section. */ |
5274 | ||
5275 | static void | |
5276 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5277 | { | |
5278 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5279 | struct bfd_sym_chain *sym; | |
5280 | ||
5281 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
5282 | { | |
5283 | struct ppc_link_hash_entry *eh; | |
5284 | asection *sec; | |
5285 | ||
5286 | eh = (struct ppc_link_hash_entry *) | |
5287 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5288 | if (eh == NULL) | |
5289 | continue; | |
5290 | if (eh->elf.root.type != bfd_link_hash_defined | |
5291 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5292 | continue; | |
5293 | ||
5294 | if (eh->is_func_descriptor | |
5295 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5296 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5297 | { | |
5298 | sec = eh->oh->elf.root.u.def.section; | |
5299 | sec->flags |= SEC_KEEP; | |
5300 | } | |
5301 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5302 | && opd_entry_value (eh->elf.root.u.def.section, | |
5303 | eh->elf.root.u.def.value, | |
5304 | &sec, NULL) != (bfd_vma) -1) | |
5305 | sec->flags |= SEC_KEEP; | |
5306 | ||
5307 | sec = eh->elf.root.u.def.section; | |
5308 | sec->flags |= SEC_KEEP; | |
5309 | } | |
5310 | } | |
5311 | ||
64d03ab5 AM |
5312 | /* Mark sections containing dynamically referenced symbols. When |
5313 | building shared libraries, we must assume that any visible symbol is | |
5314 | referenced. */ | |
5315 | ||
5316 | static bfd_boolean | |
5317 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5318 | { | |
5319 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5320 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5321 | ||
5322 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5323 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5324 | ||
5325 | /* Dynamic linking info is on the func descriptor sym. */ | |
5326 | if (eh->oh != NULL | |
5327 | && eh->oh->is_func_descriptor | |
5328 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5329 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5330 | eh = eh->oh; | |
5331 | ||
5332 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5333 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5334 | && (eh->elf.ref_dynamic | |
5335 | || (!info->executable | |
5336 | && eh->elf.def_regular | |
5337 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5338 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5339 | { | |
5340 | asection *code_sec; | |
5341 | ||
5342 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5343 | ||
5344 | /* Function descriptor syms cause the associated | |
5345 | function code sym section to be marked. */ | |
5346 | if (eh->is_func_descriptor | |
5347 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5348 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5349 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5350 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5351 | && opd_entry_value (eh->elf.root.u.def.section, | |
5352 | eh->elf.root.u.def.value, | |
5353 | &code_sec, NULL) != (bfd_vma) -1) | |
5354 | code_sec->flags |= SEC_KEEP; | |
5355 | } | |
5356 | ||
5357 | return TRUE; | |
5358 | } | |
5359 | ||
5bd4f169 AM |
5360 | /* Return the section that should be marked against GC for a given |
5361 | relocation. */ | |
5362 | ||
5363 | static asection * | |
4ce794b7 | 5364 | ppc64_elf_gc_mark_hook (asection *sec, |
74f0fb50 | 5365 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4ce794b7 AM |
5366 | Elf_Internal_Rela *rel, |
5367 | struct elf_link_hash_entry *h, | |
5368 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5369 | { |
ccfa59ea AM |
5370 | asection *rsec; |
5371 | ||
ccfa59ea AM |
5372 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5373 | function sections, as all functions are referenced in .opd. */ | |
5374 | rsec = NULL; | |
5375 | if (get_opd_info (sec) != NULL) | |
5376 | return rsec; | |
1e2f5b6e | 5377 | |
5bd4f169 AM |
5378 | if (h != NULL) |
5379 | { | |
04c9666a | 5380 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5381 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5382 | |
4ce794b7 | 5383 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5384 | switch (r_type) |
5bd4f169 AM |
5385 | { |
5386 | case R_PPC64_GNU_VTINHERIT: | |
5387 | case R_PPC64_GNU_VTENTRY: | |
5388 | break; | |
5389 | ||
5390 | default: | |
5391 | switch (h->root.type) | |
5392 | { | |
5393 | case bfd_link_hash_defined: | |
5394 | case bfd_link_hash_defweak: | |
ccfa59ea | 5395 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5396 | if (eh->oh != NULL |
5397 | && eh->oh->is_func_descriptor | |
5398 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5399 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5400 | eh = eh->oh; |
1e2f5b6e AM |
5401 | |
5402 | /* Function descriptor syms cause the associated | |
5403 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5404 | if (eh->is_func_descriptor |
5405 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5406 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5407 | { |
5408 | /* They also mark their opd section. */ | |
74f0fb50 | 5409 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea AM |
5410 | |
5411 | rsec = eh->oh->elf.root.u.def.section; | |
5412 | } | |
8387904d AM |
5413 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5414 | && opd_entry_value (eh->elf.root.u.def.section, | |
5415 | eh->elf.root.u.def.value, | |
5416 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5417 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5418 | else |
1e2f5b6e AM |
5419 | rsec = h->root.u.def.section; |
5420 | break; | |
5bd4f169 AM |
5421 | |
5422 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5423 | rsec = h->root.u.c.p->section; |
5424 | break; | |
5bd4f169 AM |
5425 | |
5426 | default: | |
5427 | break; | |
5428 | } | |
5429 | } | |
5430 | } | |
5431 | else | |
5432 | { | |
74f0fb50 | 5433 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5434 | |
5435 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5436 | opd = get_opd_info (rsec); |
5437 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5438 | { |
74f0fb50 | 5439 | rsec->gc_mark = 1; |
ccfa59ea | 5440 | |
74f0fb50 | 5441 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5442 | } |
5bd4f169 AM |
5443 | } |
5444 | ||
1e2f5b6e | 5445 | return rsec; |
5bd4f169 AM |
5446 | } |
5447 | ||
65f38f15 AM |
5448 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5449 | section being removed. */ | |
5bd4f169 | 5450 | |
b34976b6 | 5451 | static bfd_boolean |
4ce794b7 AM |
5452 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5453 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5454 | { |
411e1bfb | 5455 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5456 | Elf_Internal_Shdr *symtab_hdr; |
5457 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5458 | struct got_entry **local_got_ents; |
5bd4f169 | 5459 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5460 | |
7dda2462 TG |
5461 | if (info->relocatable) |
5462 | return TRUE; | |
5463 | ||
680a3378 AM |
5464 | if ((sec->flags & SEC_ALLOC) == 0) |
5465 | return TRUE; | |
5466 | ||
ec338859 AM |
5467 | elf_section_data (sec)->local_dynrel = NULL; |
5468 | ||
411e1bfb | 5469 | htab = ppc_hash_table (info); |
0ffa91dd | 5470 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5471 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5472 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5473 | |
5474 | relend = relocs + sec->reloc_count; | |
5475 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5476 | { |
5477 | unsigned long r_symndx; | |
04c9666a | 5478 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5479 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5480 | char tls_type = 0; |
5bd4f169 | 5481 | |
a33d1f77 | 5482 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5483 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5484 | if (r_symndx >= symtab_hdr->sh_info) |
5485 | { | |
5486 | struct ppc_link_hash_entry *eh; | |
5487 | struct ppc_dyn_relocs **pp; | |
5488 | struct ppc_dyn_relocs *p; | |
5489 | ||
5490 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5491 | while (h->root.type == bfd_link_hash_indirect |
5492 | || h->root.type == bfd_link_hash_warning) | |
5493 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5494 | eh = (struct ppc_link_hash_entry *) h; |
5495 | ||
5496 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5497 | if (p->sec == sec) | |
5498 | { | |
5499 | /* Everything must go for SEC. */ | |
5500 | *pp = p->next; | |
5501 | break; | |
5502 | } | |
5503 | } | |
5504 | ||
a33d1f77 AM |
5505 | switch (r_type) |
5506 | { | |
411e1bfb AM |
5507 | case R_PPC64_GOT_TLSLD16: |
5508 | case R_PPC64_GOT_TLSLD16_LO: | |
5509 | case R_PPC64_GOT_TLSLD16_HI: | |
5510 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5511 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5512 | goto dogot; |
5513 | ||
5514 | case R_PPC64_GOT_TLSGD16: | |
5515 | case R_PPC64_GOT_TLSGD16_LO: | |
5516 | case R_PPC64_GOT_TLSGD16_HI: | |
5517 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5518 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5519 | goto dogot; |
5520 | ||
5521 | case R_PPC64_GOT_TPREL16_DS: | |
5522 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5523 | case R_PPC64_GOT_TPREL16_HI: | |
5524 | case R_PPC64_GOT_TPREL16_HA: | |
5525 | tls_type = TLS_TLS | TLS_TPREL; | |
5526 | goto dogot; | |
5527 | ||
5528 | case R_PPC64_GOT_DTPREL16_DS: | |
5529 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5530 | case R_PPC64_GOT_DTPREL16_HI: | |
5531 | case R_PPC64_GOT_DTPREL16_HA: | |
5532 | tls_type = TLS_TLS | TLS_DTPREL; | |
5533 | goto dogot; | |
5534 | ||
a33d1f77 AM |
5535 | case R_PPC64_GOT16: |
5536 | case R_PPC64_GOT16_DS: | |
5537 | case R_PPC64_GOT16_HA: | |
5538 | case R_PPC64_GOT16_HI: | |
5539 | case R_PPC64_GOT16_LO: | |
5540 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5541 | dogot: |
5542 | { | |
5543 | struct got_entry *ent; | |
5544 | ||
58ac9f71 AM |
5545 | if (h != NULL) |
5546 | ent = h->got.glist; | |
411e1bfb AM |
5547 | else |
5548 | ent = local_got_ents[r_symndx]; | |
5549 | ||
5550 | for (; ent != NULL; ent = ent->next) | |
5551 | if (ent->addend == rel->r_addend | |
e717da7e | 5552 | && ent->owner == abfd |
411e1bfb AM |
5553 | && ent->tls_type == tls_type) |
5554 | break; | |
5555 | if (ent == NULL) | |
5556 | abort (); | |
5557 | if (ent->got.refcount > 0) | |
5558 | ent->got.refcount -= 1; | |
5559 | } | |
a33d1f77 | 5560 | break; |
65f38f15 | 5561 | |
a33d1f77 AM |
5562 | case R_PPC64_PLT16_HA: |
5563 | case R_PPC64_PLT16_HI: | |
5564 | case R_PPC64_PLT16_LO: | |
5565 | case R_PPC64_PLT32: | |
5566 | case R_PPC64_PLT64: | |
721956f4 AM |
5567 | case R_PPC64_REL14: |
5568 | case R_PPC64_REL14_BRNTAKEN: | |
5569 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5570 | case R_PPC64_REL24: |
58ac9f71 | 5571 | if (h != NULL) |
5d1634d7 | 5572 | { |
411e1bfb AM |
5573 | struct plt_entry *ent; |
5574 | ||
411e1bfb AM |
5575 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5576 | if (ent->addend == rel->r_addend) | |
5577 | break; | |
5578 | if (ent == NULL) | |
5579 | abort (); | |
5580 | if (ent->plt.refcount > 0) | |
5581 | ent->plt.refcount -= 1; | |
5d1634d7 | 5582 | } |
e86ce104 | 5583 | break; |
5d1634d7 | 5584 | |
a33d1f77 AM |
5585 | default: |
5586 | break; | |
5587 | } | |
5588 | } | |
b34976b6 | 5589 | return TRUE; |
5bd4f169 AM |
5590 | } |
5591 | ||
deb0e272 AM |
5592 | /* The maximum size of .sfpr. */ |
5593 | #define SFPR_MAX (218*4) | |
5594 | ||
5595 | struct sfpr_def_parms | |
5596 | { | |
699733f6 AM |
5597 | const char name[12]; |
5598 | unsigned char lo, hi; | |
deb0e272 AM |
5599 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5600 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5601 | }; | |
5602 | ||
5603 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5604 | ||
5605 | static unsigned int | |
5606 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5607 | { | |
5608 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5609 | unsigned int i; | |
5610 | size_t len = strlen (parm->name); | |
5611 | bfd_boolean writing = FALSE; | |
699733f6 | 5612 | char sym[16]; |
deb0e272 AM |
5613 | |
5614 | memcpy (sym, parm->name, len); | |
5615 | sym[len + 2] = 0; | |
5616 | ||
5617 | for (i = parm->lo; i <= parm->hi; i++) | |
5618 | { | |
5619 | struct elf_link_hash_entry *h; | |
5620 | ||
5621 | sym[len + 0] = i / 10 + '0'; | |
5622 | sym[len + 1] = i % 10 + '0'; | |
5623 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5624 | if (h != NULL | |
f5385ebf | 5625 | && !h->def_regular) |
deb0e272 AM |
5626 | { |
5627 | h->root.type = bfd_link_hash_defined; | |
5628 | h->root.u.def.section = htab->sfpr; | |
5629 | h->root.u.def.value = htab->sfpr->size; | |
5630 | h->type = STT_FUNC; | |
f5385ebf | 5631 | h->def_regular = 1; |
deb0e272 AM |
5632 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5633 | writing = TRUE; | |
5634 | if (htab->sfpr->contents == NULL) | |
5635 | { | |
5636 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5637 | if (htab->sfpr->contents == NULL) | |
5638 | return FALSE; | |
5639 | } | |
5640 | } | |
5641 | if (writing) | |
5642 | { | |
5643 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5644 | if (i != parm->hi) | |
5645 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5646 | else | |
5647 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5648 | htab->sfpr->size = p - htab->sfpr->contents; | |
5649 | } | |
5650 | } | |
5651 | ||
5652 | return TRUE; | |
5653 | } | |
5654 | ||
5655 | static bfd_byte * | |
5656 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5657 | { | |
5658 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5659 | return p + 4; | |
5660 | } | |
5661 | ||
5662 | static bfd_byte * | |
5663 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5664 | { | |
5665 | p = savegpr0 (abfd, p, r); | |
5666 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5667 | p = p + 4; | |
5668 | bfd_put_32 (abfd, BLR, p); | |
5669 | return p + 4; | |
5670 | } | |
5671 | ||
5672 | static bfd_byte * | |
5673 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5674 | { | |
5675 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5676 | return p + 4; | |
5677 | } | |
5678 | ||
5679 | static bfd_byte * | |
5680 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5681 | { | |
5682 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5683 | p = p + 4; | |
5684 | p = restgpr0 (abfd, p, r); | |
5685 | bfd_put_32 (abfd, MTLR_R0, p); | |
5686 | p = p + 4; | |
5687 | if (r == 29) | |
5688 | { | |
5689 | p = restgpr0 (abfd, p, 30); | |
5690 | p = restgpr0 (abfd, p, 31); | |
5691 | } | |
5692 | bfd_put_32 (abfd, BLR, p); | |
5693 | return p + 4; | |
5694 | } | |
5695 | ||
5696 | static bfd_byte * | |
5697 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5698 | { | |
5699 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5700 | return p + 4; | |
5701 | } | |
5702 | ||
5703 | static bfd_byte * | |
5704 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5705 | { | |
5706 | p = savegpr1 (abfd, p, r); | |
5707 | bfd_put_32 (abfd, BLR, p); | |
5708 | return p + 4; | |
5709 | } | |
5710 | ||
5711 | static bfd_byte * | |
5712 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5713 | { | |
5714 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5715 | return p + 4; | |
5716 | } | |
5717 | ||
5718 | static bfd_byte * | |
5719 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5720 | { | |
5721 | p = restgpr1 (abfd, p, r); | |
5722 | bfd_put_32 (abfd, BLR, p); | |
5723 | return p + 4; | |
5724 | } | |
5725 | ||
5726 | static bfd_byte * | |
5727 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5728 | { | |
5729 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5730 | return p + 4; | |
5731 | } | |
5732 | ||
5733 | static bfd_byte * | |
5734 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5735 | { | |
5736 | p = savefpr (abfd, p, r); | |
5737 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5738 | p = p + 4; | |
5739 | bfd_put_32 (abfd, BLR, p); | |
5740 | return p + 4; | |
5741 | } | |
5742 | ||
5743 | static bfd_byte * | |
5744 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5745 | { | |
5746 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5747 | return p + 4; | |
5748 | } | |
5749 | ||
5750 | static bfd_byte * | |
5751 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5752 | { | |
5753 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5754 | p = p + 4; | |
5755 | p = restfpr (abfd, p, r); | |
5756 | bfd_put_32 (abfd, MTLR_R0, p); | |
5757 | p = p + 4; | |
5758 | if (r == 29) | |
5759 | { | |
5760 | p = restfpr (abfd, p, 30); | |
5761 | p = restfpr (abfd, p, 31); | |
5762 | } | |
5763 | bfd_put_32 (abfd, BLR, p); | |
5764 | return p + 4; | |
5765 | } | |
5766 | ||
5767 | static bfd_byte * | |
5768 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5769 | { | |
5770 | p = savefpr (abfd, p, r); | |
5771 | bfd_put_32 (abfd, BLR, p); | |
5772 | return p + 4; | |
5773 | } | |
5774 | ||
5775 | static bfd_byte * | |
5776 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5777 | { | |
5778 | p = restfpr (abfd, p, r); | |
5779 | bfd_put_32 (abfd, BLR, p); | |
5780 | return p + 4; | |
5781 | } | |
5782 | ||
5783 | static bfd_byte * | |
5784 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5785 | { | |
5786 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5787 | p = p + 4; | |
5788 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5789 | return p + 4; | |
5790 | } | |
5791 | ||
5792 | static bfd_byte * | |
5793 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5794 | { | |
5795 | p = savevr (abfd, p, r); | |
5796 | bfd_put_32 (abfd, BLR, p); | |
5797 | return p + 4; | |
5798 | } | |
5799 | ||
5800 | static bfd_byte * | |
5801 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5802 | { | |
5803 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5804 | p = p + 4; | |
5805 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5806 | return p + 4; | |
5807 | } | |
5808 | ||
5809 | static bfd_byte * | |
5810 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5811 | { | |
5812 | p = restvr (abfd, p, r); | |
5813 | bfd_put_32 (abfd, BLR, p); | |
5814 | return p + 4; | |
5815 | } | |
5816 | ||
e86ce104 AM |
5817 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5818 | information on function code symbol entries to their corresponding | |
5819 | function descriptor symbol entries. */ | |
deb0e272 | 5820 | |
b34976b6 | 5821 | static bfd_boolean |
4ce794b7 | 5822 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5823 | { |
e86ce104 | 5824 | struct bfd_link_info *info; |
65f38f15 | 5825 | struct ppc_link_hash_table *htab; |
411e1bfb | 5826 | struct plt_entry *ent; |
50bc7936 AM |
5827 | struct ppc_link_hash_entry *fh; |
5828 | struct ppc_link_hash_entry *fdh; | |
5829 | bfd_boolean force_local; | |
5bd4f169 | 5830 | |
50bc7936 AM |
5831 | fh = (struct ppc_link_hash_entry *) h; |
5832 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5833 | return TRUE; |
e86ce104 | 5834 | |
50bc7936 AM |
5835 | if (fh->elf.root.type == bfd_link_hash_warning) |
5836 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5837 | |
4ce794b7 | 5838 | info = inf; |
65f38f15 | 5839 | htab = ppc_hash_table (info); |
5bd4f169 | 5840 | |
c09bdfe5 AM |
5841 | /* Resolve undefined references to dot-symbols as the value |
5842 | in the function descriptor, if we have one in a regular object. | |
5843 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5844 | in dynamic objects are handled elsewhere. */ | |
5845 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5846 | && fh->was_undefined | |
5847 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5848 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5849 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5850 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5851 | fh->oh->elf.root.u.def.value, | |
5852 | &fh->elf.root.u.def.section, | |
5853 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5854 | { | |
5855 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5856 | fh->elf.forced_local = 1; |
2b953679 AM |
5857 | fh->elf.def_regular = fh->oh->elf.def_regular; |
5858 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
c09bdfe5 AM |
5859 | } |
5860 | ||
e86ce104 AM |
5861 | /* If this is a function code symbol, transfer dynamic linking |
5862 | information to the function descriptor symbol. */ | |
50bc7936 | 5863 | if (!fh->is_func) |
b34976b6 | 5864 | return TRUE; |
e86ce104 | 5865 | |
50bc7936 | 5866 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5867 | if (ent->plt.refcount > 0) |
5868 | break; | |
50bc7936 AM |
5869 | if (ent == NULL |
5870 | || fh->elf.root.root.string[0] != '.' | |
5871 | || fh->elf.root.root.string[1] == '\0') | |
5872 | return TRUE; | |
5bd4f169 | 5873 | |
50bc7936 AM |
5874 | /* Find the corresponding function descriptor symbol. Create it |
5875 | as undefined if necessary. */ | |
5bd4f169 | 5876 | |
50bc7936 AM |
5877 | fdh = get_fdh (fh, htab); |
5878 | if (fdh != NULL) | |
5879 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5880 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5881 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5882 | |
50bc7936 | 5883 | if (fdh == NULL |
df131623 | 5884 | && !info->executable |
50bc7936 AM |
5885 | && (fh->elf.root.type == bfd_link_hash_undefined |
5886 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5887 | { | |
908b32fc | 5888 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5889 | if (fdh == NULL) |
5890 | return FALSE; | |
50bc7936 | 5891 | } |
648cca2c | 5892 | |
908b32fc | 5893 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5894 | code symbol is strong undefined, make the fake sym the same. |
5895 | If the function code symbol is defined, then force the fake | |
5896 | descriptor local; We can't support overriding of symbols in a | |
5897 | shared library on a fake descriptor. */ | |
908b32fc AM |
5898 | |
5899 | if (fdh != NULL | |
5900 | && fdh->fake | |
433817dd | 5901 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5902 | { |
433817dd AM |
5903 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5904 | { | |
5905 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5906 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5907 | } | |
5908 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5909 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5910 | { | |
5911 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5912 | } | |
908b32fc AM |
5913 | } |
5914 | ||
50bc7936 | 5915 | if (fdh != NULL |
f5385ebf | 5916 | && !fdh->elf.forced_local |
df131623 | 5917 | && (!info->executable |
f5385ebf AM |
5918 | || fdh->elf.def_dynamic |
5919 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5920 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5921 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5922 | { | |
5923 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5924 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5925 | return FALSE; |
f5385ebf AM |
5926 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5927 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5928 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5929 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5930 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5931 | { |
40d16e0b | 5932 | move_plt_plist (fh, fdh); |
f5385ebf | 5933 | fdh->elf.needs_plt = 1; |
e86ce104 | 5934 | } |
50bc7936 | 5935 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5936 | fdh->oh = fh; |
5937 | fh->oh = fdh; | |
e86ce104 AM |
5938 | } |
5939 | ||
50bc7936 AM |
5940 | /* Now that the info is on the function descriptor, clear the |
5941 | function code sym info. Any function code syms for which we | |
5942 | don't have a definition in a regular file, we force local. | |
5943 | This prevents a shared library from exporting syms that have | |
5944 | been imported from another library. Function code syms that | |
5945 | are really in the library we must leave global to prevent the | |
5946 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5947 | force_local = (!fh->elf.def_regular |
5948 | || fdh == NULL | |
5949 | || !fdh->elf.def_regular | |
5950 | || fdh->elf.forced_local); | |
50bc7936 AM |
5951 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5952 | ||
b34976b6 | 5953 | return TRUE; |
e86ce104 | 5954 | } |
40b8271b | 5955 | |
e86ce104 | 5956 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5957 | this hook to a) provide some gcc support functions, and b) transfer |
5958 | dynamic linking information gathered so far on function code symbol | |
5959 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5960 | |
b34976b6 | 5961 | static bfd_boolean |
4ce794b7 AM |
5962 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5963 | struct bfd_link_info *info) | |
e86ce104 AM |
5964 | { |
5965 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5966 | unsigned int i; |
deb0e272 AM |
5967 | const struct sfpr_def_parms funcs[] = |
5968 | { | |
5969 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5970 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5971 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5972 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5973 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5974 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5975 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5976 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5977 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5978 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5979 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5980 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5981 | }; | |
e86ce104 AM |
5982 | |
5983 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5984 | if (htab->sfpr == NULL) |
5985 | /* We don't have any relocs. */ | |
b34976b6 | 5986 | return TRUE; |
82bd7b59 | 5987 | |
deb0e272 AM |
5988 | /* Provide any missing _save* and _rest* functions. */ |
5989 | htab->sfpr->size = 0; | |
5990 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5991 | if (!sfpr_define (info, &funcs[i])) | |
5992 | return FALSE; | |
82bd7b59 | 5993 | |
4ce794b7 | 5994 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5995 | |
eea6121a | 5996 | if (htab->sfpr->size == 0) |
8423293d | 5997 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5998 | |
b34976b6 | 5999 | return TRUE; |
e86ce104 AM |
6000 | } |
6001 | ||
6002 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6003 | regular object. The current definition is in some section of the | |
6004 | dynamic object, but we're not including those sections. We have to | |
6005 | change the definition to something the rest of the link can | |
6006 | understand. */ | |
6007 | ||
b34976b6 | 6008 | static bfd_boolean |
4ce794b7 AM |
6009 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6010 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6011 | { |
6012 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6013 | asection *s; |
e86ce104 AM |
6014 | |
6015 | htab = ppc_hash_table (info); | |
6016 | ||
6017 | /* Deal with function syms. */ | |
6018 | if (h->type == STT_FUNC | |
f5385ebf | 6019 | || h->needs_plt) |
e86ce104 AM |
6020 | { |
6021 | /* Clear procedure linkage table information for any symbol that | |
6022 | won't need a .plt entry. */ | |
411e1bfb AM |
6023 | struct plt_entry *ent; |
6024 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6025 | if (ent->plt.refcount > 0) | |
6026 | break; | |
8387904d | 6027 | if (ent == NULL |
9c7a29a3 AM |
6028 | || SYMBOL_CALLS_LOCAL (info, h) |
6029 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6030 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 6031 | { |
411e1bfb | 6032 | h->plt.plist = NULL; |
f5385ebf | 6033 | h->needs_plt = 0; |
40b8271b | 6034 | } |
5bd4f169 | 6035 | } |
bbd7ec4a | 6036 | else |
411e1bfb | 6037 | h->plt.plist = NULL; |
5bd4f169 AM |
6038 | |
6039 | /* If this is a weak symbol, and there is a real definition, the | |
6040 | processor independent code will have arranged for us to see the | |
6041 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6042 | if (h->u.weakdef != NULL) |
5bd4f169 | 6043 | { |
f6e332e6 AM |
6044 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6045 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6046 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6047 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6048 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6049 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6050 | return TRUE; |
5bd4f169 AM |
6051 | } |
6052 | ||
5bd4f169 AM |
6053 | /* If we are creating a shared library, we must presume that the |
6054 | only references to the symbol are via the global offset table. | |
6055 | For such cases we need not do anything here; the relocations will | |
6056 | be handled correctly by relocate_section. */ | |
6057 | if (info->shared) | |
b34976b6 | 6058 | return TRUE; |
5bd4f169 | 6059 | |
65f38f15 AM |
6060 | /* If there are no references to this symbol that do not use the |
6061 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6062 | if (!h->non_got_ref) |
b34976b6 | 6063 | return TRUE; |
65f38f15 | 6064 | |
b186458a JJ |
6065 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6066 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6067 | return TRUE; | |
6068 | ||
f4656909 | 6069 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6070 | { |
f4656909 AM |
6071 | struct ppc_link_hash_entry * eh; |
6072 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6073 | |
f4656909 AM |
6074 | eh = (struct ppc_link_hash_entry *) h; |
6075 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6076 | { | |
6077 | s = p->sec->output_section; | |
6078 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6079 | break; | |
6080 | } | |
6081 | ||
6082 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6083 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6084 | if (p == NULL) | |
6085 | { | |
f5385ebf | 6086 | h->non_got_ref = 0; |
f4656909 AM |
6087 | return TRUE; |
6088 | } | |
65f38f15 AM |
6089 | } |
6090 | ||
5d35169e | 6091 | if (h->plt.plist != NULL) |
97b639ba AM |
6092 | { |
6093 | /* We should never get here, but unfortunately there are versions | |
6094 | of gcc out there that improperly (for this ABI) put initialized | |
6095 | function pointers, vtable refs and suchlike in read-only | |
6096 | sections. Allow them to proceed, but warn that this might | |
6097 | break at runtime. */ | |
6098 | (*_bfd_error_handler) | |
6099 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6100 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6101 | h->root.root.string); | |
6102 | } | |
5d35169e AM |
6103 | |
6104 | /* This is a reference to a symbol defined by a dynamic object which | |
6105 | is not a function. */ | |
6106 | ||
909272ee AM |
6107 | if (h->size == 0) |
6108 | { | |
6109 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6110 | h->root.root.string); | |
6111 | return TRUE; | |
6112 | } | |
6113 | ||
5bd4f169 AM |
6114 | /* We must allocate the symbol in our .dynbss section, which will |
6115 | become part of the .bss section of the executable. There will be | |
6116 | an entry for this symbol in the .dynsym section. The dynamic | |
6117 | object will contain position independent code, so all references | |
6118 | from the dynamic object to this symbol will go through the global | |
6119 | offset table. The dynamic linker will use the .dynsym entry to | |
6120 | determine the address it must put in the global offset table, so | |
6121 | both the dynamic object and the regular object will refer to the | |
6122 | same memory location for the variable. */ | |
5bd4f169 | 6123 | |
04c9666a AM |
6124 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6125 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6126 | runtime process image. We need to remember the offset into the |
6127 | .rela.bss section we are going to use. */ | |
6128 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6129 | { | |
eea6121a | 6130 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6131 | h->needs_copy = 1; |
5bd4f169 AM |
6132 | } |
6133 | ||
4ce794b7 | 6134 | s = htab->dynbss; |
5bd4f169 | 6135 | |
027297b7 | 6136 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6137 | } |
6138 | ||
e86ce104 AM |
6139 | /* If given a function descriptor symbol, hide both the function code |
6140 | sym and the descriptor. */ | |
6141 | static void | |
4ce794b7 AM |
6142 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6143 | struct elf_link_hash_entry *h, | |
6144 | bfd_boolean force_local) | |
e86ce104 | 6145 | { |
34814b9f | 6146 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6147 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6148 | ||
34814b9f AM |
6149 | eh = (struct ppc_link_hash_entry *) h; |
6150 | if (eh->is_func_descriptor) | |
e86ce104 | 6151 | { |
34814b9f | 6152 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6153 | |
721956f4 | 6154 | if (fh == NULL) |
d1329ca3 AM |
6155 | { |
6156 | const char *p, *q; | |
6157 | struct ppc_link_hash_table *htab; | |
6158 | char save; | |
6159 | ||
6160 | /* We aren't supposed to use alloca in BFD because on | |
6161 | systems which do not have alloca the version in libiberty | |
6162 | calls xmalloc, which might cause the program to crash | |
6163 | when it runs out of memory. This function doesn't have a | |
6164 | return status, so there's no way to gracefully return an | |
6165 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6166 | accessed; It's either a string in an ELF string table, |
6167 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6168 | |
34814b9f | 6169 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6170 | save = *p; |
6171 | *(char *) p = '.'; | |
6172 | htab = ppc_hash_table (info); | |
34814b9f AM |
6173 | fh = (struct ppc_link_hash_entry *) |
6174 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6175 | *(char *) p = save; |
6176 | ||
6177 | /* Unfortunately, if it so happens that the string we were | |
6178 | looking for was allocated immediately before this string, | |
6179 | then we overwrote the string terminator. That's the only | |
6180 | reason the lookup should fail. */ | |
6181 | if (fh == NULL) | |
6182 | { | |
34814b9f AM |
6183 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6184 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6185 | --q, --p; |
34814b9f AM |
6186 | if (q < eh->elf.root.root.string && *p == '.') |
6187 | fh = (struct ppc_link_hash_entry *) | |
6188 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6189 | } |
6190 | if (fh != NULL) | |
6191 | { | |
34814b9f AM |
6192 | eh->oh = fh; |
6193 | fh->oh = eh; | |
d1329ca3 AM |
6194 | } |
6195 | } | |
e86ce104 | 6196 | if (fh != NULL) |
34814b9f | 6197 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6198 | } |
6199 | } | |
6200 | ||
411e1bfb | 6201 | static bfd_boolean |
8843416a AM |
6202 | get_sym_h (struct elf_link_hash_entry **hp, |
6203 | Elf_Internal_Sym **symp, | |
6204 | asection **symsecp, | |
6205 | char **tls_maskp, | |
6206 | Elf_Internal_Sym **locsymsp, | |
6207 | unsigned long r_symndx, | |
6208 | bfd *ibfd) | |
411e1bfb | 6209 | { |
0ffa91dd | 6210 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6211 | |
6212 | if (r_symndx >= symtab_hdr->sh_info) | |
6213 | { | |
6214 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6215 | struct elf_link_hash_entry *h; | |
6216 | ||
6217 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6218 | while (h->root.type == bfd_link_hash_indirect | |
6219 | || h->root.type == bfd_link_hash_warning) | |
6220 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6221 | ||
6222 | if (hp != NULL) | |
6223 | *hp = h; | |
6224 | ||
6225 | if (symp != NULL) | |
6226 | *symp = NULL; | |
6227 | ||
6228 | if (symsecp != NULL) | |
6229 | { | |
6230 | asection *symsec = NULL; | |
6231 | if (h->root.type == bfd_link_hash_defined | |
6232 | || h->root.type == bfd_link_hash_defweak) | |
6233 | symsec = h->root.u.def.section; | |
6234 | *symsecp = symsec; | |
6235 | } | |
6236 | ||
e7b938ca | 6237 | if (tls_maskp != NULL) |
411e1bfb AM |
6238 | { |
6239 | struct ppc_link_hash_entry *eh; | |
6240 | ||
6241 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6242 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6243 | } |
6244 | } | |
6245 | else | |
6246 | { | |
6247 | Elf_Internal_Sym *sym; | |
6248 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6249 | ||
6250 | if (locsyms == NULL) | |
6251 | { | |
6252 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6253 | if (locsyms == NULL) | |
6254 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6255 | symtab_hdr->sh_info, | |
6256 | 0, NULL, NULL, NULL); | |
6257 | if (locsyms == NULL) | |
6258 | return FALSE; | |
6259 | *locsymsp = locsyms; | |
6260 | } | |
6261 | sym = locsyms + r_symndx; | |
6262 | ||
6263 | if (hp != NULL) | |
6264 | *hp = NULL; | |
6265 | ||
6266 | if (symp != NULL) | |
6267 | *symp = sym; | |
6268 | ||
6269 | if (symsecp != NULL) | |
cb33740c | 6270 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6271 | |
e7b938ca | 6272 | if (tls_maskp != NULL) |
411e1bfb AM |
6273 | { |
6274 | struct got_entry **lgot_ents; | |
e7b938ca | 6275 | char *tls_mask; |
411e1bfb | 6276 | |
e7b938ca | 6277 | tls_mask = NULL; |
411e1bfb AM |
6278 | lgot_ents = elf_local_got_ents (ibfd); |
6279 | if (lgot_ents != NULL) | |
6280 | { | |
e7b938ca AM |
6281 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6282 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6283 | } |
e7b938ca | 6284 | *tls_maskp = tls_mask; |
411e1bfb AM |
6285 | } |
6286 | } | |
6287 | return TRUE; | |
6288 | } | |
6289 | ||
e7b938ca | 6290 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6291 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6292 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6293 | |
6294 | static int | |
3a71aa26 AM |
6295 | get_tls_mask (char **tls_maskp, |
6296 | unsigned long *toc_symndx, | |
6297 | bfd_vma *toc_addend, | |
0d4792f7 | 6298 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6299 | const Elf_Internal_Rela *rel, |
6300 | bfd *ibfd) | |
411e1bfb AM |
6301 | { |
6302 | unsigned long r_symndx; | |
0d4792f7 | 6303 | int next_r; |
411e1bfb AM |
6304 | struct elf_link_hash_entry *h; |
6305 | Elf_Internal_Sym *sym; | |
6306 | asection *sec; | |
6307 | bfd_vma off; | |
6308 | ||
6309 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6310 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6311 | return 0; |
411e1bfb | 6312 | |
e7b938ca | 6313 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6314 | || sec == NULL |
7c8fe5c4 | 6315 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6316 | return 1; |
411e1bfb AM |
6317 | |
6318 | /* Look inside a TOC section too. */ | |
6319 | if (h != NULL) | |
6320 | { | |
6321 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6322 | off = h->root.u.def.value; | |
6323 | } | |
6324 | else | |
6325 | off = sym->st_value; | |
6326 | off += rel->r_addend; | |
6327 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6328 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6329 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6330 | if (toc_symndx != NULL) |
6331 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6332 | if (toc_addend != NULL) |
6333 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6334 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6335 | return 0; | |
0d4792f7 AM |
6336 | if ((h == NULL |
6337 | || ((h->root.type == bfd_link_hash_defined | |
6338 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6339 | && !h->def_dynamic)) |
0d4792f7 AM |
6340 | && (next_r == -1 || next_r == -2)) |
6341 | return 1 - next_r; | |
951fd09b | 6342 | return 1; |
411e1bfb AM |
6343 | } |
6344 | ||
754021d0 | 6345 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6346 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6347 | |
6348 | static bfd_boolean | |
6349 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6350 | { | |
6351 | struct ppc_link_hash_entry *eh; | |
6352 | asection *sym_sec; | |
74f0fb50 | 6353 | struct _opd_sec_data *opd; |
754021d0 AM |
6354 | |
6355 | if (h->root.type == bfd_link_hash_indirect) | |
6356 | return TRUE; | |
6357 | ||
6358 | if (h->root.type == bfd_link_hash_warning) | |
6359 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6360 | ||
6361 | if (h->root.type != bfd_link_hash_defined | |
6362 | && h->root.type != bfd_link_hash_defweak) | |
6363 | return TRUE; | |
6364 | ||
6365 | eh = (struct ppc_link_hash_entry *) h; | |
6366 | if (eh->adjust_done) | |
6367 | return TRUE; | |
6368 | ||
6369 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6370 | opd = get_opd_info (sym_sec); |
6371 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6372 | { |
74f0fb50 | 6373 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6374 | if (adjust == -1) |
6375 | { | |
6376 | /* This entry has been deleted. */ | |
b3fac117 | 6377 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6378 | if (dsec == NULL) |
6379 | { | |
6380 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6381 | if (elf_discarded_section (dsec)) | |
6382 | { | |
b3fac117 | 6383 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6384 | break; |
6385 | } | |
6386 | } | |
4025353c | 6387 | eh->elf.root.u.def.value = 0; |
81688140 | 6388 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6389 | } |
6390 | else | |
6391 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6392 | eh->adjust_done = 1; |
6393 | } | |
6394 | return TRUE; | |
6395 | } | |
6396 | ||
8c1d1bb8 AM |
6397 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6398 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6399 | have already been determined. */ | |
6400 | ||
6401 | static bfd_boolean | |
6402 | dec_dynrel_count (bfd_vma r_info, | |
6403 | asection *sec, | |
6404 | struct bfd_link_info *info, | |
6405 | Elf_Internal_Sym **local_syms, | |
6406 | struct elf_link_hash_entry *h, | |
6407 | asection *sym_sec) | |
6408 | { | |
6409 | enum elf_ppc64_reloc_type r_type; | |
6410 | struct ppc_dyn_relocs *p; | |
6411 | struct ppc_dyn_relocs **pp; | |
6412 | ||
6413 | /* Can this reloc be dynamic? This switch, and later tests here | |
6414 | should be kept in sync with the code in check_relocs. */ | |
6415 | r_type = ELF64_R_TYPE (r_info); | |
6416 | switch (r_type) | |
6417 | { | |
6418 | default: | |
6419 | return TRUE; | |
6420 | ||
6421 | case R_PPC64_TPREL16: | |
6422 | case R_PPC64_TPREL16_LO: | |
6423 | case R_PPC64_TPREL16_HI: | |
6424 | case R_PPC64_TPREL16_HA: | |
6425 | case R_PPC64_TPREL16_DS: | |
6426 | case R_PPC64_TPREL16_LO_DS: | |
6427 | case R_PPC64_TPREL16_HIGHER: | |
6428 | case R_PPC64_TPREL16_HIGHERA: | |
6429 | case R_PPC64_TPREL16_HIGHEST: | |
6430 | case R_PPC64_TPREL16_HIGHESTA: | |
6431 | if (!info->shared) | |
6432 | return TRUE; | |
6433 | ||
6434 | case R_PPC64_TPREL64: | |
6435 | case R_PPC64_DTPMOD64: | |
6436 | case R_PPC64_DTPREL64: | |
6437 | case R_PPC64_ADDR64: | |
6438 | case R_PPC64_REL30: | |
6439 | case R_PPC64_REL32: | |
6440 | case R_PPC64_REL64: | |
6441 | case R_PPC64_ADDR14: | |
6442 | case R_PPC64_ADDR14_BRNTAKEN: | |
6443 | case R_PPC64_ADDR14_BRTAKEN: | |
6444 | case R_PPC64_ADDR16: | |
6445 | case R_PPC64_ADDR16_DS: | |
6446 | case R_PPC64_ADDR16_HA: | |
6447 | case R_PPC64_ADDR16_HI: | |
6448 | case R_PPC64_ADDR16_HIGHER: | |
6449 | case R_PPC64_ADDR16_HIGHERA: | |
6450 | case R_PPC64_ADDR16_HIGHEST: | |
6451 | case R_PPC64_ADDR16_HIGHESTA: | |
6452 | case R_PPC64_ADDR16_LO: | |
6453 | case R_PPC64_ADDR16_LO_DS: | |
6454 | case R_PPC64_ADDR24: | |
6455 | case R_PPC64_ADDR32: | |
6456 | case R_PPC64_UADDR16: | |
6457 | case R_PPC64_UADDR32: | |
6458 | case R_PPC64_UADDR64: | |
6459 | case R_PPC64_TOC: | |
6460 | break; | |
6461 | } | |
6462 | ||
6463 | if (local_syms != NULL) | |
6464 | { | |
6465 | unsigned long r_symndx; | |
6466 | Elf_Internal_Sym *sym; | |
6467 | bfd *ibfd = sec->owner; | |
6468 | ||
6469 | r_symndx = ELF64_R_SYM (r_info); | |
6470 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6471 | return FALSE; | |
6472 | } | |
6473 | ||
6474 | if ((info->shared | |
1d483afe | 6475 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6476 | || (h != NULL |
6477 | && (!info->symbolic | |
6478 | || h->root.type == bfd_link_hash_defweak | |
6479 | || !h->def_regular)))) | |
6480 | || (ELIMINATE_COPY_RELOCS | |
6481 | && !info->shared | |
6482 | && h != NULL | |
6483 | && (h->root.type == bfd_link_hash_defweak | |
6484 | || !h->def_regular))) | |
6485 | ; | |
6486 | else | |
6487 | return TRUE; | |
6488 | ||
6489 | if (h != NULL) | |
6490 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6491 | else |
6edfbbad | 6492 | { |
60124e18 AM |
6493 | if (sym_sec != NULL) |
6494 | { | |
6495 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6496 | pp = (struct ppc_dyn_relocs **) vpp; | |
6497 | } | |
6498 | else | |
6499 | { | |
6500 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6501 | pp = (struct ppc_dyn_relocs **) vpp; | |
6502 | } | |
6503 | ||
6504 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6505 | with local syms for a given section. Don't report a dynreloc | |
6506 | miscount. */ | |
6507 | if (*pp == NULL) | |
6508 | return TRUE; | |
6edfbbad | 6509 | } |
8c1d1bb8 AM |
6510 | |
6511 | while ((p = *pp) != NULL) | |
6512 | { | |
6513 | if (p->sec == sec) | |
6514 | { | |
1d483afe | 6515 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6516 | p->pc_count -= 1; |
6517 | p->count -= 1; | |
6518 | if (p->count == 0) | |
6519 | *pp = p->next; | |
6520 | return TRUE; | |
6521 | } | |
6522 | pp = &p->next; | |
6523 | } | |
6524 | ||
6525 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6526 | sec->owner, sec); | |
6527 | bfd_set_error (bfd_error_bad_value); | |
6528 | return FALSE; | |
6529 | } | |
6530 | ||
754021d0 AM |
6531 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6532 | only remove those associated with functions in discarded link-once | |
6533 | sections, or weakly defined functions that have been overridden. It | |
6534 | would be possible to remove many more entries for statically linked | |
6535 | applications. */ | |
6536 | ||
b34976b6 | 6537 | bfd_boolean |
3f764659 JJ |
6538 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6539 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6540 | { |
6541 | bfd *ibfd; | |
754021d0 | 6542 | bfd_boolean some_edited = FALSE; |
3f764659 | 6543 | asection *need_pad = NULL; |
1e2f5b6e | 6544 | |
411e1bfb | 6545 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6546 | { |
6547 | asection *sec; | |
6548 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6549 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6550 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6551 | struct elf_link_hash_entry **sym_hashes; |
6552 | bfd_vma offset; | |
74f0fb50 | 6553 | struct _opd_sec_data *opd; |
3f764659 JJ |
6554 | bfd_boolean need_edit, add_aux_fields; |
6555 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6556 | |
6557 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6558 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6559 | continue; |
6560 | ||
4b85d634 AM |
6561 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6562 | continue; | |
6563 | ||
1e2f5b6e AM |
6564 | if (sec->output_section == bfd_abs_section_ptr) |
6565 | continue; | |
6566 | ||
6567 | /* Look through the section relocs. */ | |
6568 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6569 | continue; | |
6570 | ||
6cdc0ccc | 6571 | local_syms = NULL; |
0ffa91dd | 6572 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6573 | sym_hashes = elf_sym_hashes (ibfd); |
6574 | ||
6575 | /* Read the relocations. */ | |
4ce794b7 | 6576 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6577 | info->keep_memory); |
1e2f5b6e | 6578 | if (relstart == NULL) |
b34976b6 | 6579 | return FALSE; |
1e2f5b6e AM |
6580 | |
6581 | /* First run through the relocs to check they are sane, and to | |
6582 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6583 | need_edit = FALSE; |
3f764659 | 6584 | need_pad = sec; |
1e2f5b6e AM |
6585 | offset = 0; |
6586 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6587 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6588 | { |
04c9666a | 6589 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6590 | unsigned long r_symndx; |
6591 | asection *sym_sec; | |
6592 | struct elf_link_hash_entry *h; | |
6593 | Elf_Internal_Sym *sym; | |
6594 | ||
3f764659 | 6595 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6596 | only interested in the reloc pointing to a function entry |
6597 | point. */ | |
50bc7936 AM |
6598 | if (rel->r_offset != offset |
6599 | || rel + 1 >= relend | |
6600 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6601 | { |
6602 | /* If someone messes with .opd alignment then after a | |
6603 | "ld -r" we might have padding in the middle of .opd. | |
6604 | Also, there's nothing to prevent someone putting | |
6605 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6606 | optimization for them! */ |
3f764659 | 6607 | broken_opd: |
1e2f5b6e | 6608 | (*_bfd_error_handler) |
d003868e | 6609 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6610 | need_edit = FALSE; |
1e2f5b6e AM |
6611 | break; |
6612 | } | |
6613 | ||
50bc7936 AM |
6614 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6615 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6616 | { | |
6617 | (*_bfd_error_handler) | |
d003868e AM |
6618 | (_("%B: unexpected reloc type %u in .opd section"), |
6619 | ibfd, r_type); | |
50bc7936 AM |
6620 | need_edit = FALSE; |
6621 | break; | |
6622 | } | |
6623 | ||
1e2f5b6e | 6624 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6625 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6626 | r_symndx, ibfd)) | |
50bc7936 | 6627 | goto error_ret; |
1e2f5b6e AM |
6628 | |
6629 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6630 | { | |
411e1bfb AM |
6631 | const char *sym_name; |
6632 | if (h != NULL) | |
6633 | sym_name = h->root.root.string; | |
6634 | else | |
26c61ae5 L |
6635 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6636 | sym_sec); | |
411e1bfb | 6637 | |
1e2f5b6e | 6638 | (*_bfd_error_handler) |
d003868e AM |
6639 | (_("%B: undefined sym `%s' in .opd section"), |
6640 | ibfd, sym_name); | |
b34976b6 | 6641 | need_edit = FALSE; |
1e2f5b6e AM |
6642 | break; |
6643 | } | |
6644 | ||
51020317 AM |
6645 | /* opd entries are always for functions defined in the |
6646 | current input bfd. If the symbol isn't defined in the | |
6647 | input bfd, then we won't be using the function in this | |
6648 | bfd; It must be defined in a linkonce section in another | |
6649 | bfd, or is weak. It's also possible that we are | |
6650 | discarding the function due to a linker script /DISCARD/, | |
6651 | which we test for via the output_section. */ | |
6652 | if (sym_sec->owner != ibfd | |
6653 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6654 | need_edit = TRUE; |
1e2f5b6e | 6655 | |
50bc7936 | 6656 | rel += 2; |
3f764659 JJ |
6657 | if (rel == relend |
6658 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6659 | { | |
6660 | if (sec->size == offset + 24) | |
6661 | { | |
6662 | need_pad = NULL; | |
6663 | break; | |
6664 | } | |
6665 | if (rel == relend && sec->size == offset + 16) | |
6666 | { | |
6667 | cnt_16b++; | |
6668 | break; | |
6669 | } | |
6670 | goto broken_opd; | |
6671 | } | |
6672 | ||
6673 | if (rel->r_offset == offset + 24) | |
6674 | offset += 24; | |
6675 | else if (rel->r_offset != offset + 16) | |
6676 | goto broken_opd; | |
6677 | else if (rel + 1 < relend | |
6678 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6679 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6680 | { | |
6681 | offset += 16; | |
6682 | cnt_16b++; | |
6683 | } | |
6684 | else if (rel + 2 < relend | |
6685 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6686 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6687 | { | |
6688 | offset += 24; | |
6689 | rel += 1; | |
6690 | } | |
6691 | else | |
6692 | goto broken_opd; | |
1e2f5b6e AM |
6693 | } |
6694 | ||
3f764659 JJ |
6695 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6696 | ||
6697 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6698 | { |
6699 | Elf_Internal_Rela *write_rel; | |
6700 | bfd_byte *rptr, *wptr; | |
3f764659 | 6701 | bfd_byte *new_contents = NULL; |
b34976b6 | 6702 | bfd_boolean skip; |
3f764659 | 6703 | long opd_ent_size; |
74f0fb50 AM |
6704 | bfd_size_type amt; |
6705 | ||
6706 | amt = sec->size * sizeof (long) / 8; | |
6707 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
6708 | opd->adjust = bfd_zalloc (obfd, amt); | |
6709 | if (opd->adjust == NULL) | |
6710 | return FALSE; | |
6711 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
6712 | |
6713 | /* This seems a waste of time as input .opd sections are all | |
6714 | zeros as generated by gcc, but I suppose there's no reason | |
6715 | this will always be so. We might start putting something in | |
6716 | the third word of .opd entries. */ | |
6717 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6718 | { | |
eea6121a AM |
6719 | bfd_byte *loc; |
6720 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6721 | { |
eea6121a AM |
6722 | if (loc != NULL) |
6723 | free (loc); | |
50bc7936 | 6724 | error_ret: |
6cdc0ccc AM |
6725 | if (local_syms != NULL |
6726 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6727 | free (local_syms); | |
6cdc0ccc AM |
6728 | if (elf_section_data (sec)->relocs != relstart) |
6729 | free (relstart); | |
b34976b6 | 6730 | return FALSE; |
6cdc0ccc | 6731 | } |
1e2f5b6e AM |
6732 | sec->contents = loc; |
6733 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6734 | } | |
6735 | ||
6736 | elf_section_data (sec)->relocs = relstart; | |
6737 | ||
3f764659 | 6738 | new_contents = sec->contents; |
3f764659 JJ |
6739 | if (add_aux_fields) |
6740 | { | |
6741 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6742 | if (new_contents == NULL) | |
6743 | return FALSE; | |
6744 | need_pad = FALSE; | |
3f764659 | 6745 | } |
b4f4e59f AM |
6746 | wptr = new_contents; |
6747 | rptr = sec->contents; | |
3f764659 | 6748 | |
1e2f5b6e | 6749 | write_rel = relstart; |
b34976b6 | 6750 | skip = FALSE; |
1e2f5b6e | 6751 | offset = 0; |
3f764659 | 6752 | opd_ent_size = 0; |
1e2f5b6e AM |
6753 | for (rel = relstart; rel < relend; rel++) |
6754 | { | |
50bc7936 AM |
6755 | unsigned long r_symndx; |
6756 | asection *sym_sec; | |
6757 | struct elf_link_hash_entry *h; | |
6758 | Elf_Internal_Sym *sym; | |
6759 | ||
6760 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6761 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6762 | r_symndx, ibfd)) |
50bc7936 AM |
6763 | goto error_ret; |
6764 | ||
1e2f5b6e AM |
6765 | if (rel->r_offset == offset) |
6766 | { | |
50bc7936 | 6767 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6768 | |
6769 | /* See if the .opd entry is full 24 byte or | |
6770 | 16 byte (with fd_aux entry overlapped with next | |
6771 | fd_func). */ | |
6772 | opd_ent_size = 24; | |
6773 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6774 | || (rel + 3 < relend | |
6775 | && rel[2].r_offset == offset + 16 | |
6776 | && rel[3].r_offset == offset + 24 | |
6777 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6778 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6779 | opd_ent_size = 16; | |
6780 | ||
4025353c AM |
6781 | if (h != NULL |
6782 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6783 | { |
6784 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6785 | ppc_hash_table (info)); | |
6786 | if (fdh != NULL | |
6787 | && fdh->elf.root.type != bfd_link_hash_defined | |
6788 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6789 | fdh = NULL; | |
6790 | } | |
1e2f5b6e | 6791 | |
51020317 AM |
6792 | skip = (sym_sec->owner != ibfd |
6793 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6794 | if (skip) |
6795 | { | |
4025353c | 6796 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6797 | { |
6798 | /* Arrange for the function descriptor sym | |
6799 | to be dropped. */ | |
d6fe2dc1 AM |
6800 | fdh->elf.root.u.def.value = 0; |
6801 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6802 | } |
74f0fb50 | 6803 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6804 | } |
6805 | else | |
1e2f5b6e AM |
6806 | { |
6807 | /* We'll be keeping this opd entry. */ | |
6808 | ||
4025353c | 6809 | if (fdh != NULL) |
1e2f5b6e | 6810 | { |
754021d0 AM |
6811 | /* Redefine the function descriptor symbol to |
6812 | this location in the opd section. It is | |
6813 | necessary to update the value here rather | |
6814 | than using an array of adjustments as we do | |
6815 | for local symbols, because various places | |
6816 | in the generic ELF code use the value | |
6817 | stored in u.def.value. */ | |
3f764659 | 6818 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6819 | fdh->adjust_done = 1; |
1e2f5b6e | 6820 | } |
754021d0 AM |
6821 | |
6822 | /* Local syms are a bit tricky. We could | |
6823 | tweak them as they can be cached, but | |
6824 | we'd need to look through the local syms | |
6825 | for the function descriptor sym which we | |
6826 | don't have at the moment. So keep an | |
6827 | array of adjustments. */ | |
74f0fb50 | 6828 | opd->adjust[rel->r_offset / 8] |
3f764659 | 6829 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
6830 | |
6831 | if (wptr != rptr) | |
3f764659 JJ |
6832 | memcpy (wptr, rptr, opd_ent_size); |
6833 | wptr += opd_ent_size; | |
6834 | if (add_aux_fields && opd_ent_size == 16) | |
6835 | { | |
6836 | memset (wptr, '\0', 8); | |
6837 | wptr += 8; | |
6838 | } | |
1e2f5b6e | 6839 | } |
3f764659 JJ |
6840 | rptr += opd_ent_size; |
6841 | offset += opd_ent_size; | |
1e2f5b6e AM |
6842 | } |
6843 | ||
50bc7936 AM |
6844 | if (skip) |
6845 | { | |
60124e18 AM |
6846 | if (!NO_OPD_RELOCS |
6847 | && !info->relocatable | |
18d944df AM |
6848 | && !dec_dynrel_count (rel->r_info, sec, info, |
6849 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6850 | goto error_ret; |
50bc7936 AM |
6851 | } |
6852 | else | |
1e2f5b6e | 6853 | { |
50bc7936 AM |
6854 | /* We need to adjust any reloc offsets to point to the |
6855 | new opd entries. While we're at it, we may as well | |
6856 | remove redundant relocs. */ | |
74f0fb50 | 6857 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6858 | if (write_rel != rel) |
6859 | memcpy (write_rel, rel, sizeof (*rel)); | |
6860 | ++write_rel; | |
6861 | } | |
6862 | } | |
6863 | ||
3f764659 | 6864 | sec->size = wptr - new_contents; |
1e2f5b6e | 6865 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6866 | if (add_aux_fields) |
6867 | { | |
6868 | free (sec->contents); | |
6869 | sec->contents = new_contents; | |
6870 | } | |
6871 | ||
05bf9422 | 6872 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6873 | elf_bfd_final_link if we are emitting relocs. */ |
6874 | elf_section_data (sec)->rel_hdr.sh_size | |
6875 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6876 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6877 | some_edited = TRUE; |
1e2f5b6e | 6878 | } |
6cdc0ccc | 6879 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6880 | free (relstart); |
6cdc0ccc | 6881 | |
411e1bfb AM |
6882 | if (local_syms != NULL |
6883 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6884 | { | |
6885 | if (!info->keep_memory) | |
6886 | free (local_syms); | |
6887 | else | |
6888 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6889 | } | |
6890 | } | |
6891 | ||
754021d0 AM |
6892 | if (some_edited) |
6893 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6894 | ||
3f764659 JJ |
6895 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6896 | long, add a 8 byte padding after it. */ | |
6897 | if (need_pad != NULL && !info->relocatable) | |
6898 | { | |
6899 | bfd_byte *p; | |
6900 | ||
6901 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6902 | { | |
6903 | BFD_ASSERT (need_pad->size > 0); | |
6904 | ||
6905 | p = bfd_malloc (need_pad->size + 8); | |
6906 | if (p == NULL) | |
6907 | return FALSE; | |
699733f6 | 6908 | |
3f764659 JJ |
6909 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6910 | p, 0, need_pad->size)) | |
6911 | return FALSE; | |
6912 | ||
6913 | need_pad->contents = p; | |
6914 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6915 | } | |
6916 | else | |
6917 | { | |
6918 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6919 | if (p == NULL) | |
6920 | return FALSE; | |
6921 | ||
6922 | need_pad->contents = p; | |
6923 | } | |
6924 | ||
6925 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6926 | need_pad->size += 8; | |
6927 | } | |
6928 | ||
411e1bfb AM |
6929 | return TRUE; |
6930 | } | |
6931 | ||
e1918d23 | 6932 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6933 | |
e1918d23 | 6934 | asection * |
4ce794b7 | 6935 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6936 | { |
411e1bfb AM |
6937 | struct ppc_link_hash_table *htab; |
6938 | ||
411e1bfb | 6939 | htab = ppc_hash_table (info); |
3a71aa26 AM |
6940 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
6941 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
6942 | FALSE, FALSE, TRUE)); | |
6943 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) | |
6944 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
6945 | FALSE, FALSE, TRUE)); | |
6946 | return _bfd_elf_tls_setup (obfd, info); | |
6947 | } | |
8387904d | 6948 | |
3a71aa26 AM |
6949 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
6950 | HASH1 or HASH2. */ | |
8387904d | 6951 | |
3a71aa26 AM |
6952 | static bfd_boolean |
6953 | branch_reloc_hash_match (const bfd *ibfd, | |
6954 | const Elf_Internal_Rela *rel, | |
6955 | const struct ppc_link_hash_entry *hash1, | |
6956 | const struct ppc_link_hash_entry *hash2) | |
6957 | { | |
6958 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
6959 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
6960 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
6961 | ||
6962 | if (r_symndx >= symtab_hdr->sh_info | |
6963 | && (r_type == R_PPC64_REL24 | |
6964 | || r_type == R_PPC64_REL14 | |
6965 | || r_type == R_PPC64_REL14_BRTAKEN | |
6966 | || r_type == R_PPC64_REL14_BRNTAKEN | |
6967 | || r_type == R_PPC64_ADDR24 | |
6968 | || r_type == R_PPC64_ADDR14 | |
6969 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
6970 | || r_type == R_PPC64_ADDR14_BRNTAKEN)) | |
8387904d | 6971 | { |
3a71aa26 AM |
6972 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
6973 | struct elf_link_hash_entry *h; | |
8387904d | 6974 | |
3a71aa26 AM |
6975 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
6976 | while (h->root.type == bfd_link_hash_indirect | |
6977 | || h->root.type == bfd_link_hash_warning) | |
6978 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6979 | if (h == &hash1->elf || h == &hash2->elf) | |
6980 | return TRUE; | |
a48ebf4d | 6981 | } |
3a71aa26 | 6982 | return FALSE; |
951fd09b | 6983 | } |
411e1bfb | 6984 | |
951fd09b AM |
6985 | /* Run through all the TLS relocs looking for optimization |
6986 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6987 | a preliminary section layout so that we know the TLS segment | |
6988 | offsets. We can't optimize earlier because some optimizations need | |
6989 | to know the tp offset, and we need to optimize before allocating | |
6990 | dynamic relocations. */ | |
6991 | ||
6992 | bfd_boolean | |
4ce794b7 | 6993 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6994 | { |
6995 | bfd *ibfd; | |
6996 | asection *sec; | |
6997 | struct ppc_link_hash_table *htab; | |
102890f0 | 6998 | int pass; |
951fd09b | 6999 | |
1d483afe | 7000 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7001 | return TRUE; |
7002 | ||
951fd09b | 7003 | htab = ppc_hash_table (info); |
411e1bfb AM |
7004 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
7005 | { | |
7006 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
7007 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
7008 | unsigned char *toc_ref = NULL; | |
411e1bfb | 7009 | |
102890f0 AM |
7010 | /* Look at all the sections for this file. Make two passes over |
7011 | the relocs. On the first pass, mark toc entries involved | |
7012 | with tls relocs, and check that tls relocs involved in | |
7013 | setting up a tls_get_addr call are indeed followed by such a | |
7014 | call. If they are not, exclude them from the optimizations | |
7015 | done on the second pass. */ | |
7016 | for (pass = 0; pass < 2; ++pass) | |
7017 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7018 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7019 | { | |
7020 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 7021 | |
102890f0 AM |
7022 | /* Read the relocations. */ |
7023 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7024 | info->keep_memory); | |
7025 | if (relstart == NULL) | |
7026 | return FALSE; | |
411e1bfb | 7027 | |
102890f0 AM |
7028 | relend = relstart + sec->reloc_count; |
7029 | for (rel = relstart; rel < relend; rel++) | |
7030 | { | |
7031 | enum elf_ppc64_reloc_type r_type; | |
7032 | unsigned long r_symndx; | |
7033 | struct elf_link_hash_entry *h; | |
7034 | Elf_Internal_Sym *sym; | |
7035 | asection *sym_sec; | |
7036 | char *tls_mask; | |
7037 | char tls_set, tls_clear, tls_type = 0; | |
7038 | bfd_vma value; | |
7039 | bfd_boolean ok_tprel, is_local; | |
7040 | long toc_ref_index = 0; | |
7041 | int expecting_tls_get_addr = 0; | |
411e1bfb | 7042 | |
102890f0 AM |
7043 | r_symndx = ELF64_R_SYM (rel->r_info); |
7044 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7045 | r_symndx, ibfd)) | |
7046 | { | |
7047 | err_free_rel: | |
7048 | if (elf_section_data (sec)->relocs != relstart) | |
7049 | free (relstart); | |
7050 | if (toc_ref != NULL) | |
7051 | free (toc_ref); | |
7052 | if (locsyms != NULL | |
0ffa91dd | 7053 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7054 | != (unsigned char *) locsyms)) |
7055 | free (locsyms); | |
7056 | return FALSE; | |
7057 | } | |
411e1bfb | 7058 | |
102890f0 AM |
7059 | if (h != NULL) |
7060 | { | |
7061 | if (h->root.type != bfd_link_hash_defined | |
7062 | && h->root.type != bfd_link_hash_defweak) | |
7063 | continue; | |
7064 | value = h->root.u.def.value; | |
7065 | } | |
7066 | else | |
7067 | /* Symbols referenced by TLS relocs must be of type | |
7068 | STT_TLS. So no need for .opd local sym adjust. */ | |
7069 | value = sym->st_value; | |
7070 | ||
7071 | ok_tprel = FALSE; | |
7072 | is_local = FALSE; | |
7073 | if (h == NULL | |
7074 | || !h->def_dynamic) | |
7075 | { | |
7076 | is_local = TRUE; | |
7077 | value += sym_sec->output_offset; | |
7078 | value += sym_sec->output_section->vma; | |
7079 | value -= htab->elf.tls_sec->vma; | |
7080 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7081 | < (bfd_vma) 1 << 32); | |
7082 | } | |
951fd09b | 7083 | |
102890f0 AM |
7084 | r_type = ELF64_R_TYPE (rel->r_info); |
7085 | switch (r_type) | |
7086 | { | |
7087 | case R_PPC64_GOT_TLSLD16: | |
7088 | case R_PPC64_GOT_TLSLD16_LO: | |
7089 | expecting_tls_get_addr = 1; | |
7090 | /* Fall thru */ | |
7091 | ||
7092 | case R_PPC64_GOT_TLSLD16_HI: | |
7093 | case R_PPC64_GOT_TLSLD16_HA: | |
7094 | /* These relocs should never be against a symbol | |
7095 | defined in a shared lib. Leave them alone if | |
7096 | that turns out to be the case. */ | |
7097 | if (!is_local) | |
7098 | continue; | |
411e1bfb | 7099 | |
102890f0 | 7100 | /* LD -> LE */ |
411e1bfb | 7101 | tls_set = 0; |
102890f0 AM |
7102 | tls_clear = TLS_LD; |
7103 | tls_type = TLS_TLS | TLS_LD; | |
7104 | break; | |
411e1bfb | 7105 | |
102890f0 AM |
7106 | case R_PPC64_GOT_TLSGD16: |
7107 | case R_PPC64_GOT_TLSGD16_LO: | |
7108 | expecting_tls_get_addr = 1; | |
7109 | /* Fall thru */ | |
7110 | ||
7111 | case R_PPC64_GOT_TLSGD16_HI: | |
7112 | case R_PPC64_GOT_TLSGD16_HA: | |
7113 | if (ok_tprel) | |
7114 | /* GD -> LE */ | |
411e1bfb | 7115 | tls_set = 0; |
102890f0 AM |
7116 | else |
7117 | /* GD -> IE */ | |
7118 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7119 | tls_clear = TLS_GD; | |
7120 | tls_type = TLS_TLS | TLS_GD; | |
7121 | break; | |
7122 | ||
7123 | case R_PPC64_GOT_TPREL16_DS: | |
7124 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7125 | case R_PPC64_GOT_TPREL16_HI: | |
7126 | case R_PPC64_GOT_TPREL16_HA: | |
7127 | if (ok_tprel) | |
7128 | { | |
7129 | /* IE -> LE */ | |
7130 | tls_set = 0; | |
7131 | tls_clear = TLS_TPREL; | |
7132 | tls_type = TLS_TLS | TLS_TPREL; | |
7133 | break; | |
7134 | } | |
411e1bfb AM |
7135 | continue; |
7136 | ||
102890f0 AM |
7137 | case R_PPC64_TOC16: |
7138 | case R_PPC64_TOC16_LO: | |
7139 | case R_PPC64_TLS: | |
727fc41e AM |
7140 | case R_PPC64_TLSGD: |
7141 | case R_PPC64_TLSLD: | |
102890f0 AM |
7142 | if (sym_sec == NULL || sym_sec != toc) |
7143 | continue; | |
7144 | ||
7145 | /* Mark this toc entry as referenced by a TLS | |
7146 | code sequence. We can do that now in the | |
7147 | case of R_PPC64_TLS, and after checking for | |
7148 | tls_get_addr for the TOC16 relocs. */ | |
7149 | if (toc_ref == NULL) | |
7150 | { | |
7151 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7152 | if (toc_ref == NULL) | |
7153 | goto err_free_rel; | |
7154 | } | |
7155 | if (h != NULL) | |
7156 | value = h->root.u.def.value; | |
7157 | else | |
7158 | value = sym->st_value; | |
7159 | value += rel->r_addend; | |
7160 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7161 | toc_ref_index = value / 8; | |
727fc41e AM |
7162 | if (r_type == R_PPC64_TLS |
7163 | || r_type == R_PPC64_TLSGD | |
7164 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7165 | { |
7166 | toc_ref[toc_ref_index] = 1; | |
7167 | continue; | |
7168 | } | |
7169 | ||
7170 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7171 | continue; | |
7172 | ||
7173 | tls_set = 0; | |
7174 | tls_clear = 0; | |
7175 | expecting_tls_get_addr = 2; | |
7176 | break; | |
7177 | ||
7178 | case R_PPC64_TPREL64: | |
7179 | if (pass == 0 | |
7180 | || sec != toc | |
7181 | || toc_ref == NULL | |
7182 | || !toc_ref[rel->r_offset / 8]) | |
7183 | continue; | |
7184 | if (ok_tprel) | |
7185 | { | |
7186 | /* IE -> LE */ | |
7187 | tls_set = TLS_EXPLICIT; | |
7188 | tls_clear = TLS_TPREL; | |
7189 | break; | |
7190 | } | |
7191 | continue; | |
7192 | ||
7193 | case R_PPC64_DTPMOD64: | |
7194 | if (pass == 0 | |
7195 | || sec != toc | |
7196 | || toc_ref == NULL | |
7197 | || !toc_ref[rel->r_offset / 8]) | |
7198 | continue; | |
7199 | if (rel + 1 < relend | |
7200 | && (rel[1].r_info | |
7201 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7202 | && rel[1].r_offset == rel->r_offset + 8) | |
7203 | { | |
7204 | if (ok_tprel) | |
7205 | /* GD -> LE */ | |
7206 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7207 | else | |
7208 | /* GD -> IE */ | |
7209 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7210 | tls_clear = TLS_GD; | |
7211 | } | |
7212 | else | |
7213 | { | |
7214 | if (!is_local) | |
7215 | continue; | |
7216 | ||
7217 | /* LD -> LE */ | |
7218 | tls_set = TLS_EXPLICIT; | |
7219 | tls_clear = TLS_LD; | |
7220 | } | |
7221 | break; | |
7222 | ||
7223 | default: | |
7224 | continue; | |
7225 | } | |
7226 | ||
7227 | if (pass == 0) | |
7228 | { | |
727fc41e AM |
7229 | if (!expecting_tls_get_addr |
7230 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7231 | continue; |
7232 | ||
3a71aa26 AM |
7233 | if (rel + 1 < relend |
7234 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7235 | htab->tls_get_addr, | |
7236 | htab->tls_get_addr_fd)) | |
102890f0 | 7237 | { |
3a71aa26 | 7238 | if (expecting_tls_get_addr == 2) |
102890f0 | 7239 | { |
3a71aa26 AM |
7240 | /* Check for toc tls entries. */ |
7241 | char *toc_tls; | |
7242 | int retval; | |
7243 | ||
7244 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7245 | &locsyms, | |
7246 | rel, ibfd); | |
7247 | if (retval == 0) | |
7248 | goto err_free_rel; | |
7249 | if (retval > 1 && toc_tls != NULL) | |
7250 | toc_ref[toc_ref_index] = 1; | |
102890f0 | 7251 | } |
3a71aa26 | 7252 | continue; |
102890f0 AM |
7253 | } |
7254 | ||
7255 | if (expecting_tls_get_addr != 1) | |
7256 | continue; | |
7257 | ||
7258 | /* Uh oh, we didn't find the expected call. We | |
7259 | could just mark this symbol to exclude it | |
7260 | from tls optimization but it's safer to skip | |
7261 | the entire section. */ | |
7262 | sec->has_tls_reloc = 0; | |
7263 | break; | |
7264 | } | |
7265 | ||
85f7a9cb | 7266 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7267 | { |
7268 | struct plt_entry *ent; | |
7269 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7270 | ent != NULL; | |
7271 | ent = ent->next) | |
7272 | if (ent->addend == 0) | |
411e1bfb | 7273 | { |
102890f0 | 7274 | if (ent->plt.refcount > 0) |
30038c59 | 7275 | { |
102890f0 AM |
7276 | ent->plt.refcount -= 1; |
7277 | expecting_tls_get_addr = 0; | |
30038c59 | 7278 | } |
102890f0 | 7279 | break; |
411e1bfb | 7280 | } |
102890f0 | 7281 | } |
411e1bfb | 7282 | |
85f7a9cb | 7283 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7284 | { |
7285 | struct plt_entry *ent; | |
7286 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7287 | ent != NULL; | |
7288 | ent = ent->next) | |
7289 | if (ent->addend == 0) | |
411e1bfb | 7290 | { |
102890f0 AM |
7291 | if (ent->plt.refcount > 0) |
7292 | ent->plt.refcount -= 1; | |
7293 | break; | |
411e1bfb | 7294 | } |
102890f0 | 7295 | } |
411e1bfb | 7296 | |
102890f0 | 7297 | if (tls_clear == 0) |
30038c59 AM |
7298 | continue; |
7299 | ||
102890f0 AM |
7300 | if ((tls_set & TLS_EXPLICIT) == 0) |
7301 | { | |
7302 | struct got_entry *ent; | |
411e1bfb | 7303 | |
102890f0 AM |
7304 | /* Adjust got entry for this reloc. */ |
7305 | if (h != NULL) | |
7306 | ent = h->got.glist; | |
7307 | else | |
7308 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7309 | |
102890f0 AM |
7310 | for (; ent != NULL; ent = ent->next) |
7311 | if (ent->addend == rel->r_addend | |
7312 | && ent->owner == ibfd | |
7313 | && ent->tls_type == tls_type) | |
7314 | break; | |
7315 | if (ent == NULL) | |
7316 | abort (); | |
411e1bfb | 7317 | |
102890f0 AM |
7318 | if (tls_set == 0) |
7319 | { | |
7320 | /* We managed to get rid of a got entry. */ | |
7321 | if (ent->got.refcount > 0) | |
7322 | ent->got.refcount -= 1; | |
7323 | } | |
7324 | } | |
7325 | else | |
7326 | { | |
7327 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7328 | we'll lose one or two dyn relocs. */ | |
7329 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7330 | NULL, h, sym_sec)) | |
7331 | return FALSE; | |
411e1bfb | 7332 | |
102890f0 AM |
7333 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7334 | { | |
7335 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7336 | NULL, h, sym_sec)) | |
7337 | return FALSE; | |
7338 | } | |
7339 | } | |
411e1bfb | 7340 | |
102890f0 AM |
7341 | *tls_mask |= tls_set; |
7342 | *tls_mask &= ~tls_clear; | |
7343 | } | |
8c1d1bb8 | 7344 | |
102890f0 AM |
7345 | if (elf_section_data (sec)->relocs != relstart) |
7346 | free (relstart); | |
7347 | } | |
411e1bfb | 7348 | |
727fc41e AM |
7349 | if (toc_ref != NULL) |
7350 | free (toc_ref); | |
411e1bfb | 7351 | |
727fc41e AM |
7352 | if (locsyms != NULL |
7353 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7354 | { | |
7355 | if (!info->keep_memory) | |
7356 | free (locsyms); | |
7357 | else | |
7358 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7359 | } | |
7360 | } | |
b34976b6 | 7361 | return TRUE; |
1e2f5b6e | 7362 | } |
b34976b6 | 7363 | |
c5614fa4 AM |
7364 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7365 | the values of any global symbols in a toc section that has been | |
7366 | edited. Globals in toc sections should be a rarity, so this function | |
7367 | sets a flag if any are found in toc sections other than the one just | |
7368 | edited, so that futher hash table traversals can be avoided. */ | |
7369 | ||
7370 | struct adjust_toc_info | |
7371 | { | |
7372 | asection *toc; | |
7373 | unsigned long *skip; | |
7374 | bfd_boolean global_toc_syms; | |
7375 | }; | |
7376 | ||
7377 | static bfd_boolean | |
7378 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7379 | { | |
7380 | struct ppc_link_hash_entry *eh; | |
7381 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7382 | ||
7383 | if (h->root.type == bfd_link_hash_indirect) | |
7384 | return TRUE; | |
7385 | ||
7386 | if (h->root.type == bfd_link_hash_warning) | |
7387 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7388 | ||
7389 | if (h->root.type != bfd_link_hash_defined | |
7390 | && h->root.type != bfd_link_hash_defweak) | |
7391 | return TRUE; | |
7392 | ||
7393 | eh = (struct ppc_link_hash_entry *) h; | |
7394 | if (eh->adjust_done) | |
7395 | return TRUE; | |
7396 | ||
7397 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7398 | { | |
7399 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7400 | if (skip != (unsigned long) -1) | |
7401 | eh->elf.root.u.def.value -= skip; | |
7402 | else | |
7403 | { | |
7404 | (*_bfd_error_handler) | |
7405 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7406 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7407 | eh->elf.root.u.def.value = 0; | |
7408 | } | |
7409 | eh->adjust_done = 1; | |
7410 | } | |
7411 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7412 | toc_inf->global_toc_syms = TRUE; | |
7413 | ||
7414 | return TRUE; | |
7415 | } | |
7416 | ||
7417 | /* Examine all relocs referencing .toc sections in order to remove | |
7418 | unused .toc entries. */ | |
7419 | ||
7420 | bfd_boolean | |
7421 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7422 | { | |
7423 | bfd *ibfd; | |
7424 | struct adjust_toc_info toc_inf; | |
7425 | ||
7426 | toc_inf.global_toc_syms = TRUE; | |
7427 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7428 | { | |
7429 | asection *toc, *sec; | |
7430 | Elf_Internal_Shdr *symtab_hdr; | |
7431 | Elf_Internal_Sym *local_syms; | |
7432 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7433 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7434 | unsigned long *skip, *drop; |
7435 | unsigned char *used; | |
7436 | unsigned char *keep, last, some_unused; | |
7437 | ||
7438 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7439 | if (toc == NULL | |
92b7a70f | 7440 | || toc->size == 0 |
c5614fa4 AM |
7441 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7442 | || elf_discarded_section (toc)) | |
7443 | continue; | |
7444 | ||
7445 | local_syms = NULL; | |
0ffa91dd | 7446 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7447 | sym_hashes = elf_sym_hashes (ibfd); |
7448 | ||
7449 | /* Look at sections dropped from the final link. */ | |
7450 | skip = NULL; | |
7451 | relstart = NULL; | |
7452 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7453 | { | |
7454 | if (sec->reloc_count == 0 | |
7455 | || !elf_discarded_section (sec) | |
7456 | || get_opd_info (sec) | |
7457 | || (sec->flags & SEC_ALLOC) == 0 | |
7458 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7459 | continue; | |
7460 | ||
7461 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7462 | if (relstart == NULL) | |
7463 | goto error_ret; | |
7464 | ||
7465 | /* Run through the relocs to see which toc entries might be | |
7466 | unused. */ | |
7467 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7468 | { | |
7469 | enum elf_ppc64_reloc_type r_type; | |
7470 | unsigned long r_symndx; | |
7471 | asection *sym_sec; | |
7472 | struct elf_link_hash_entry *h; | |
7473 | Elf_Internal_Sym *sym; | |
7474 | bfd_vma val; | |
7475 | ||
7476 | r_type = ELF64_R_TYPE (rel->r_info); | |
7477 | switch (r_type) | |
7478 | { | |
7479 | default: | |
7480 | continue; | |
7481 | ||
7482 | case R_PPC64_TOC16: | |
7483 | case R_PPC64_TOC16_LO: | |
7484 | case R_PPC64_TOC16_HI: | |
7485 | case R_PPC64_TOC16_HA: | |
7486 | case R_PPC64_TOC16_DS: | |
7487 | case R_PPC64_TOC16_LO_DS: | |
7488 | break; | |
7489 | } | |
7490 | ||
7491 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7492 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7493 | r_symndx, ibfd)) | |
7494 | goto error_ret; | |
7495 | ||
7496 | if (sym_sec != toc) | |
7497 | continue; | |
7498 | ||
7499 | if (h != NULL) | |
7500 | val = h->root.u.def.value; | |
7501 | else | |
7502 | val = sym->st_value; | |
7503 | val += rel->r_addend; | |
7504 | ||
7505 | if (val >= toc->size) | |
7506 | continue; | |
7507 | ||
7508 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7509 | If not, don't mark as unused. */ | |
7510 | if (val & 7) | |
7511 | continue; | |
7512 | ||
7513 | if (skip == NULL) | |
7514 | { | |
7515 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7516 | if (skip == NULL) | |
7517 | goto error_ret; | |
7518 | } | |
7519 | ||
7520 | skip[val >> 3] = 1; | |
7521 | } | |
7522 | ||
7523 | if (elf_section_data (sec)->relocs != relstart) | |
7524 | free (relstart); | |
7525 | } | |
7526 | ||
7527 | if (skip == NULL) | |
7528 | continue; | |
7529 | ||
7530 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7531 | if (used == NULL) | |
7532 | { | |
7533 | error_ret: | |
7534 | if (local_syms != NULL | |
7535 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7536 | free (local_syms); | |
7537 | if (sec != NULL | |
7538 | && relstart != NULL | |
7539 | && elf_section_data (sec)->relocs != relstart) | |
7540 | free (relstart); | |
7541 | if (skip != NULL) | |
7542 | free (skip); | |
7543 | return FALSE; | |
7544 | } | |
7545 | ||
30038c59 AM |
7546 | /* Now check all kept sections that might reference the toc. |
7547 | Check the toc itself last. */ | |
7548 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7549 | : ibfd->sections); | |
c5614fa4 | 7550 | sec != NULL; |
c5614fa4 | 7551 | sec = (sec == toc ? NULL |
c5614fa4 | 7552 | : sec->next == NULL ? toc |
30038c59 | 7553 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7554 | : sec->next)) |
7555 | { | |
7556 | int repeat; | |
7557 | ||
7558 | if (sec->reloc_count == 0 | |
7559 | || elf_discarded_section (sec) | |
7560 | || get_opd_info (sec) | |
7561 | || (sec->flags & SEC_ALLOC) == 0 | |
7562 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7563 | continue; | |
7564 | ||
7565 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7566 | if (relstart == NULL) | |
7567 | goto error_ret; | |
7568 | ||
7569 | /* Mark toc entries referenced as used. */ | |
7570 | repeat = 0; | |
7571 | do | |
7572 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7573 | { | |
7574 | enum elf_ppc64_reloc_type r_type; | |
7575 | unsigned long r_symndx; | |
7576 | asection *sym_sec; | |
7577 | struct elf_link_hash_entry *h; | |
7578 | Elf_Internal_Sym *sym; | |
7579 | bfd_vma val; | |
7580 | ||
7581 | r_type = ELF64_R_TYPE (rel->r_info); | |
7582 | switch (r_type) | |
7583 | { | |
7584 | case R_PPC64_TOC16: | |
7585 | case R_PPC64_TOC16_LO: | |
7586 | case R_PPC64_TOC16_HI: | |
7587 | case R_PPC64_TOC16_HA: | |
7588 | case R_PPC64_TOC16_DS: | |
7589 | case R_PPC64_TOC16_LO_DS: | |
7590 | /* In case we're taking addresses of toc entries. */ | |
7591 | case R_PPC64_ADDR64: | |
7592 | break; | |
7593 | ||
7594 | default: | |
7595 | continue; | |
7596 | } | |
7597 | ||
7598 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7599 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7600 | r_symndx, ibfd)) | |
7601 | { | |
7602 | free (used); | |
7603 | goto error_ret; | |
7604 | } | |
7605 | ||
7606 | if (sym_sec != toc) | |
7607 | continue; | |
7608 | ||
7609 | if (h != NULL) | |
7610 | val = h->root.u.def.value; | |
7611 | else | |
7612 | val = sym->st_value; | |
7613 | val += rel->r_addend; | |
7614 | ||
7615 | if (val >= toc->size) | |
7616 | continue; | |
7617 | ||
7618 | /* For the toc section, we only mark as used if | |
7619 | this entry itself isn't unused. */ | |
7620 | if (sec == toc | |
7621 | && !used[val >> 3] | |
7622 | && (used[rel->r_offset >> 3] | |
7623 | || !skip[rel->r_offset >> 3])) | |
7624 | /* Do all the relocs again, to catch reference | |
7625 | chains. */ | |
7626 | repeat = 1; | |
7627 | ||
7628 | used[val >> 3] = 1; | |
7629 | } | |
7630 | while (repeat); | |
7631 | } | |
7632 | ||
7633 | /* Merge the used and skip arrays. Assume that TOC | |
7634 | doublewords not appearing as either used or unused belong | |
7635 | to to an entry more than one doubleword in size. */ | |
7636 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7637 | drop < skip + (toc->size + 7) / 8; | |
7638 | ++drop, ++keep) | |
7639 | { | |
7640 | if (*keep) | |
7641 | { | |
7642 | *drop = 0; | |
7643 | last = 0; | |
7644 | } | |
7645 | else if (*drop) | |
7646 | { | |
7647 | some_unused = 1; | |
7648 | last = 1; | |
7649 | } | |
7650 | else | |
7651 | *drop = last; | |
7652 | } | |
7653 | ||
7654 | free (used); | |
7655 | ||
7656 | if (some_unused) | |
7657 | { | |
7658 | bfd_byte *contents, *src; | |
7659 | unsigned long off; | |
7660 | ||
7661 | /* Shuffle the toc contents, and at the same time convert the | |
7662 | skip array from booleans into offsets. */ | |
7663 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7664 | goto error_ret; | |
7665 | ||
7666 | elf_section_data (toc)->this_hdr.contents = contents; | |
7667 | ||
7668 | for (src = contents, off = 0, drop = skip; | |
7669 | src < contents + toc->size; | |
7670 | src += 8, ++drop) | |
7671 | { | |
7672 | if (*drop) | |
7673 | { | |
7674 | *drop = (unsigned long) -1; | |
7675 | off += 8; | |
7676 | } | |
7677 | else if (off != 0) | |
7678 | { | |
7679 | *drop = off; | |
7680 | memcpy (src - off, src, 8); | |
7681 | } | |
7682 | } | |
7683 | toc->rawsize = toc->size; | |
7684 | toc->size = src - contents - off; | |
7685 | ||
92b7a70f AM |
7686 | if (toc->reloc_count != 0) |
7687 | { | |
7688 | Elf_Internal_Rela *wrel; | |
7689 | bfd_size_type sz; | |
c5614fa4 | 7690 | |
92b7a70f AM |
7691 | /* Read toc relocs. */ |
7692 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7693 | TRUE); | |
7694 | if (relstart == NULL) | |
7695 | goto error_ret; | |
7696 | ||
7697 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7698 | wrel = relstart; | |
7699 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7700 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7701 | { | |
7702 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7703 | wrel->r_info = rel->r_info; | |
7704 | wrel->r_addend = rel->r_addend; | |
7705 | ++wrel; | |
7706 | } | |
8c1d1bb8 AM |
7707 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7708 | &local_syms, NULL, NULL)) | |
7709 | goto error_ret; | |
35090471 | 7710 | |
92b7a70f AM |
7711 | toc->reloc_count = wrel - relstart; |
7712 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7713 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7714 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7715 | } | |
c5614fa4 AM |
7716 | |
7717 | /* Adjust addends for relocs against the toc section sym. */ | |
7718 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7719 | { | |
7720 | if (sec->reloc_count == 0 | |
7721 | || elf_discarded_section (sec)) | |
7722 | continue; | |
7723 | ||
7724 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7725 | TRUE); | |
7726 | if (relstart == NULL) | |
7727 | goto error_ret; | |
7728 | ||
7729 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7730 | { | |
7731 | enum elf_ppc64_reloc_type r_type; | |
7732 | unsigned long r_symndx; | |
7733 | asection *sym_sec; | |
7734 | struct elf_link_hash_entry *h; | |
7735 | Elf_Internal_Sym *sym; | |
7736 | ||
7737 | r_type = ELF64_R_TYPE (rel->r_info); | |
7738 | switch (r_type) | |
7739 | { | |
7740 | default: | |
7741 | continue; | |
7742 | ||
7743 | case R_PPC64_TOC16: | |
7744 | case R_PPC64_TOC16_LO: | |
7745 | case R_PPC64_TOC16_HI: | |
7746 | case R_PPC64_TOC16_HA: | |
7747 | case R_PPC64_TOC16_DS: | |
7748 | case R_PPC64_TOC16_LO_DS: | |
7749 | case R_PPC64_ADDR64: | |
7750 | break; | |
7751 | } | |
7752 | ||
7753 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7754 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7755 | r_symndx, ibfd)) | |
7756 | goto error_ret; | |
7757 | ||
7758 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7759 | continue; | |
7760 | ||
7761 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7762 | } | |
7763 | } | |
7764 | ||
7765 | /* We shouldn't have local or global symbols defined in the TOC, | |
7766 | but handle them anyway. */ | |
7767 | if (local_syms != NULL) | |
7768 | { | |
7769 | Elf_Internal_Sym *sym; | |
7770 | ||
7771 | for (sym = local_syms; | |
7772 | sym < local_syms + symtab_hdr->sh_info; | |
7773 | ++sym) | |
cb33740c | 7774 | if (sym->st_value != 0 |
c5614fa4 AM |
7775 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
7776 | { | |
7777 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7778 | sym->st_value -= skip[sym->st_value >> 3]; | |
7779 | else | |
7780 | { | |
7781 | (*_bfd_error_handler) | |
7782 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7783 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7784 | NULL)); | |
c5614fa4 AM |
7785 | sym->st_value = 0; |
7786 | sym->st_shndx = SHN_ABS; | |
7787 | } | |
7788 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7789 | } | |
7790 | } | |
7791 | ||
7792 | /* Finally, adjust any global syms defined in the toc. */ | |
7793 | if (toc_inf.global_toc_syms) | |
7794 | { | |
7795 | toc_inf.toc = toc; | |
7796 | toc_inf.skip = skip; | |
7797 | toc_inf.global_toc_syms = FALSE; | |
7798 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7799 | &toc_inf); | |
7800 | } | |
7801 | } | |
7802 | ||
7803 | if (local_syms != NULL | |
7804 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7805 | { | |
7806 | if (!info->keep_memory) | |
7807 | free (local_syms); | |
7808 | else | |
7809 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7810 | } | |
7811 | free (skip); | |
7812 | } | |
7813 | ||
7814 | return TRUE; | |
7815 | } | |
7816 | ||
65f38f15 AM |
7817 | /* Allocate space in .plt, .got and associated reloc sections for |
7818 | dynamic relocs. */ | |
5bd4f169 | 7819 | |
b34976b6 | 7820 | static bfd_boolean |
4ce794b7 | 7821 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7822 | { |
65f38f15 AM |
7823 | struct bfd_link_info *info; |
7824 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7825 | asection *s; |
65f38f15 AM |
7826 | struct ppc_link_hash_entry *eh; |
7827 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7828 | struct got_entry *gent; |
5bd4f169 | 7829 | |
e92d460e | 7830 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7831 | return TRUE; |
5bd4f169 | 7832 | |
e92d460e AM |
7833 | if (h->root.type == bfd_link_hash_warning) |
7834 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7835 | ||
65f38f15 AM |
7836 | info = (struct bfd_link_info *) inf; |
7837 | htab = ppc_hash_table (info); | |
5bd4f169 | 7838 | |
65f38f15 | 7839 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7840 | && h->dynindx != -1 |
9c7a29a3 | 7841 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7842 | { |
411e1bfb AM |
7843 | struct plt_entry *pent; |
7844 | bfd_boolean doneone = FALSE; | |
7845 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7846 | if (pent->plt.refcount > 0) | |
7847 | { | |
411e1bfb AM |
7848 | /* If this is the first .plt entry, make room for the special |
7849 | first entry. */ | |
4ce794b7 | 7850 | s = htab->plt; |
eea6121a AM |
7851 | if (s->size == 0) |
7852 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7853 | |
eea6121a | 7854 | pent->plt.offset = s->size; |
411e1bfb AM |
7855 | |
7856 | /* Make room for this entry. */ | |
eea6121a | 7857 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7858 | |
7859 | /* Make room for the .glink code. */ | |
4ce794b7 | 7860 | s = htab->glink; |
eea6121a AM |
7861 | if (s->size == 0) |
7862 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7863 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7864 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7865 | s->size += 4; | |
7866 | s->size += 2*4; | |
411e1bfb AM |
7867 | |
7868 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7869 | s = htab->relplt; |
eea6121a | 7870 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7871 | doneone = TRUE; |
7872 | } | |
7873 | else | |
7874 | pent->plt.offset = (bfd_vma) -1; | |
7875 | if (!doneone) | |
65f38f15 | 7876 | { |
411e1bfb | 7877 | h->plt.plist = NULL; |
f5385ebf | 7878 | h->needs_plt = 0; |
65f38f15 AM |
7879 | } |
7880 | } | |
7881 | else | |
7882 | { | |
411e1bfb | 7883 | h->plt.plist = NULL; |
f5385ebf | 7884 | h->needs_plt = 0; |
65f38f15 AM |
7885 | } |
7886 | ||
951fd09b AM |
7887 | eh = (struct ppc_link_hash_entry *) h; |
7888 | /* Run through the TLS GD got entries first if we're changing them | |
7889 | to TPREL. */ | |
e7b938ca | 7890 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7891 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7892 | if (gent->got.refcount > 0 | |
7893 | && (gent->tls_type & TLS_GD) != 0) | |
7894 | { | |
7895 | /* This was a GD entry that has been converted to TPREL. If | |
7896 | there happens to be a TPREL entry we can use that one. */ | |
7897 | struct got_entry *ent; | |
7898 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7899 | if (ent->got.refcount > 0 | |
7900 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7901 | && ent->addend == gent->addend |
7902 | && ent->owner == gent->owner) | |
951fd09b AM |
7903 | { |
7904 | gent->got.refcount = 0; | |
7905 | break; | |
7906 | } | |
7907 | ||
7908 | /* If not, then we'll be using our own TPREL entry. */ | |
7909 | if (gent->got.refcount != 0) | |
7910 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7911 | } | |
7912 | ||
411e1bfb AM |
7913 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7914 | if (gent->got.refcount > 0) | |
7915 | { | |
951fd09b AM |
7916 | bfd_boolean dyn; |
7917 | ||
411e1bfb | 7918 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7919 | Undefined weak syms won't yet be marked as dynamic, |
7920 | nor will all TLS symbols. */ | |
411e1bfb | 7921 | if (h->dynindx == -1 |
b099ab9f AM |
7922 | && !h->forced_local |
7923 | && htab->elf.dynamic_sections_created) | |
411e1bfb | 7924 | { |
c152c796 | 7925 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7926 | return FALSE; |
7927 | } | |
65f38f15 | 7928 | |
d881513a | 7929 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7930 | && !h->def_dynamic) |
411e1bfb | 7931 | { |
102890f0 AM |
7932 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
7933 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 7934 | continue; |
411e1bfb | 7935 | } |
951fd09b | 7936 | |
0c8d6e5c | 7937 | if (!is_ppc64_elf (gent->owner)) |
0ffa91dd NC |
7938 | continue; |
7939 | ||
e717da7e | 7940 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7941 | gent->got.offset = s->size; |
7942 | s->size | |
d881513a | 7943 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7944 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7945 | if ((info->shared |
7946 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7947 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7948 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7949 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7950 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7951 | ? 2 * sizeof (Elf64_External_Rela) |
7952 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7953 | } |
7954 | else | |
7955 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7956 | |
b099ab9f AM |
7957 | if (eh->dyn_relocs == NULL |
7958 | || !htab->elf.dynamic_sections_created) | |
b34976b6 | 7959 | return TRUE; |
65f38f15 AM |
7960 | |
7961 | /* In the shared -Bsymbolic case, discard space allocated for | |
7962 | dynamic pc-relative relocs against symbols which turn out to be | |
7963 | defined in regular objects. For the normal shared case, discard | |
7964 | space for relocs that have become local due to symbol visibility | |
7965 | changes. */ | |
7966 | ||
7967 | if (info->shared) | |
7968 | { | |
9c7a29a3 | 7969 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 7970 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
7971 | generated via assembly. We want calls to protected symbols to |
7972 | resolve directly to the function rather than going via the plt. | |
7973 | If people want function pointer comparisons to work as expected | |
7974 | then they should avoid writing weird assembly. */ | |
09695f56 | 7975 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7976 | { |
7977 | struct ppc_dyn_relocs **pp; | |
7978 | ||
7979 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7980 | { |
65f38f15 AM |
7981 | p->count -= p->pc_count; |
7982 | p->pc_count = 0; | |
7983 | if (p->count == 0) | |
7984 | *pp = p->next; | |
7985 | else | |
7986 | pp = &p->next; | |
5bd4f169 | 7987 | } |
65f38f15 | 7988 | } |
4e795f50 AM |
7989 | |
7990 | /* Also discard relocs on undefined weak syms with non-default | |
7991 | visibility. */ | |
cab87ef9 AM |
7992 | if (eh->dyn_relocs != NULL |
7993 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7994 | { |
7995 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7996 | eh->dyn_relocs = NULL; | |
7997 | ||
7998 | /* Make sure this symbol is output as a dynamic symbol. | |
7999 | Undefined weak syms won't yet be marked as dynamic. */ | |
8000 | else if (h->dynindx == -1 | |
8001 | && !h->forced_local) | |
8002 | { | |
8003 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8004 | return FALSE; | |
8005 | } | |
8006 | } | |
65f38f15 | 8007 | } |
f4656909 | 8008 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8009 | { |
8010 | /* For the non-shared case, discard space for relocs against | |
8011 | symbols which turn out to need copy relocs or are not | |
8012 | dynamic. */ | |
8013 | ||
f5385ebf | 8014 | if (!h->non_got_ref |
f5385ebf | 8015 | && !h->def_regular) |
65f38f15 AM |
8016 | { |
8017 | /* Make sure this symbol is output as a dynamic symbol. | |
8018 | Undefined weak syms won't yet be marked as dynamic. */ | |
8019 | if (h->dynindx == -1 | |
f5385ebf | 8020 | && !h->forced_local) |
65f38f15 | 8021 | { |
c152c796 | 8022 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8023 | return FALSE; |
65f38f15 AM |
8024 | } |
8025 | ||
8026 | /* If that succeeded, we know we'll be keeping all the | |
8027 | relocs. */ | |
8028 | if (h->dynindx != -1) | |
8029 | goto keep; | |
8030 | } | |
8031 | ||
8032 | eh->dyn_relocs = NULL; | |
8033 | ||
ec338859 | 8034 | keep: ; |
65f38f15 AM |
8035 | } |
8036 | ||
8037 | /* Finally, allocate space. */ | |
8038 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8039 | { | |
8040 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8041 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8042 | } |
8043 | ||
b34976b6 | 8044 | return TRUE; |
65f38f15 AM |
8045 | } |
8046 | ||
8047 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8048 | ||
b34976b6 | 8049 | static bfd_boolean |
4ce794b7 | 8050 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8051 | { |
8052 | struct ppc_link_hash_entry *eh; | |
8053 | struct ppc_dyn_relocs *p; | |
8054 | ||
e92d460e AM |
8055 | if (h->root.type == bfd_link_hash_warning) |
8056 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8057 | ||
65f38f15 AM |
8058 | eh = (struct ppc_link_hash_entry *) h; |
8059 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8060 | { | |
8061 | asection *s = p->sec->output_section; | |
8062 | ||
8063 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8064 | { | |
4ce794b7 | 8065 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8066 | |
8067 | info->flags |= DF_TEXTREL; | |
8068 | ||
8069 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8070 | return FALSE; |
65f38f15 AM |
8071 | } |
8072 | } | |
b34976b6 | 8073 | return TRUE; |
65f38f15 AM |
8074 | } |
8075 | ||
8076 | /* Set the sizes of the dynamic sections. */ | |
8077 | ||
b34976b6 | 8078 | static bfd_boolean |
4ce794b7 AM |
8079 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8080 | struct bfd_link_info *info) | |
65f38f15 AM |
8081 | { |
8082 | struct ppc_link_hash_table *htab; | |
8083 | bfd *dynobj; | |
8084 | asection *s; | |
b34976b6 | 8085 | bfd_boolean relocs; |
65f38f15 AM |
8086 | bfd *ibfd; |
8087 | ||
8088 | htab = ppc_hash_table (info); | |
8089 | dynobj = htab->elf.dynobj; | |
8090 | if (dynobj == NULL) | |
8091 | abort (); | |
8092 | ||
8093 | if (htab->elf.dynamic_sections_created) | |
8094 | { | |
8095 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8096 | if (info->executable) |
65f38f15 AM |
8097 | { |
8098 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8099 | if (s == NULL) | |
8100 | abort (); | |
eea6121a | 8101 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8102 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8103 | } | |
8104 | } | |
8105 | ||
8106 | /* Set up .got offsets for local syms, and space for local dynamic | |
8107 | relocs. */ | |
8108 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8109 | { | |
411e1bfb AM |
8110 | struct got_entry **lgot_ents; |
8111 | struct got_entry **end_lgot_ents; | |
e7b938ca | 8112 | char *lgot_masks; |
65f38f15 AM |
8113 | bfd_size_type locsymcount; |
8114 | Elf_Internal_Shdr *symtab_hdr; | |
8115 | asection *srel; | |
8116 | ||
0c8d6e5c | 8117 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8118 | continue; |
8119 | ||
8120 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8121 | { | |
ec338859 | 8122 | struct ppc_dyn_relocs *p; |
65f38f15 | 8123 | |
6edfbbad | 8124 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8125 | { |
ec338859 AM |
8126 | if (!bfd_is_abs_section (p->sec) |
8127 | && bfd_is_abs_section (p->sec->output_section)) | |
8128 | { | |
8129 | /* Input section has been discarded, either because | |
8130 | it is a copy of a linkonce section or due to | |
8131 | linker script /DISCARD/, so we'll be discarding | |
8132 | the relocs too. */ | |
8133 | } | |
248866a8 | 8134 | else if (p->count != 0) |
ec338859 AM |
8135 | { |
8136 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8137 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8138 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8139 | info->flags |= DF_TEXTREL; | |
ec338859 | 8140 | } |
65f38f15 AM |
8141 | } |
8142 | } | |
8143 | ||
411e1bfb AM |
8144 | lgot_ents = elf_local_got_ents (ibfd); |
8145 | if (!lgot_ents) | |
65f38f15 AM |
8146 | continue; |
8147 | ||
0ffa91dd | 8148 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8149 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8150 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 8151 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
8152 | s = ppc64_elf_tdata (ibfd)->got; |
8153 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8154 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8155 | { |
411e1bfb AM |
8156 | struct got_entry *ent; |
8157 | ||
8158 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
8159 | if (ent->got.refcount > 0) | |
8160 | { | |
e7b938ca | 8161 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8162 | { |
102890f0 AM |
8163 | ppc64_tlsld_got (ibfd)->refcount += 1; |
8164 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
8165 | } |
8166 | else | |
8167 | { | |
eea6121a | 8168 | ent->got.offset = s->size; |
e7b938ca | 8169 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 8170 | { |
eea6121a | 8171 | s->size += 16; |
411e1bfb | 8172 | if (info->shared) |
eea6121a | 8173 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
8174 | } |
8175 | else | |
8176 | { | |
eea6121a | 8177 | s->size += 8; |
411e1bfb | 8178 | if (info->shared) |
eea6121a | 8179 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8180 | } |
8181 | } | |
8182 | } | |
8183 | else | |
8184 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
8185 | } |
8186 | } | |
8187 | ||
8188 | /* Allocate global sym .plt and .got entries, and space for global | |
8189 | sym dynamic relocs. */ | |
4ce794b7 | 8190 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8191 | |
102890f0 AM |
8192 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8193 | { | |
0c8d6e5c | 8194 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8195 | continue; |
8196 | ||
8197 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8198 | { | |
8199 | s = ppc64_elf_tdata (ibfd)->got; | |
8200 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8201 | s->size += 16; | |
8202 | if (info->shared) | |
8203 | { | |
8204 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8205 | srel->size += sizeof (Elf64_External_Rela); | |
8206 | } | |
8207 | } | |
8208 | else | |
8209 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8210 | } | |
8211 | ||
65f38f15 AM |
8212 | /* We now have determined the sizes of the various dynamic sections. |
8213 | Allocate memory for them. */ | |
b34976b6 | 8214 | relocs = FALSE; |
65f38f15 AM |
8215 | for (s = dynobj->sections; s != NULL; s = s->next) |
8216 | { | |
8217 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8218 | continue; | |
8219 | ||
4ce794b7 | 8220 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8221 | /* These haven't been allocated yet; don't strip. */ |
8222 | continue; | |
e717da7e AM |
8223 | else if (s == htab->got |
8224 | || s == htab->plt | |
c456f082 AM |
8225 | || s == htab->glink |
8226 | || s == htab->dynbss) | |
65f38f15 AM |
8227 | { |
8228 | /* Strip this section if we don't need it; see the | |
8229 | comment below. */ | |
5bd4f169 | 8230 | } |
0112cd26 | 8231 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8232 | { |
c456f082 | 8233 | if (s->size != 0) |
5bd4f169 | 8234 | { |
4ce794b7 | 8235 | if (s != htab->relplt) |
b34976b6 | 8236 | relocs = TRUE; |
5bd4f169 AM |
8237 | |
8238 | /* We use the reloc_count field as a counter if we need | |
8239 | to copy relocs into the output file. */ | |
8240 | s->reloc_count = 0; | |
8241 | } | |
8242 | } | |
65f38f15 | 8243 | else |
5bd4f169 AM |
8244 | { |
8245 | /* It's not one of our sections, so don't allocate space. */ | |
8246 | continue; | |
8247 | } | |
8248 | ||
eea6121a | 8249 | if (s->size == 0) |
5bd4f169 | 8250 | { |
c456f082 AM |
8251 | /* If we don't need this section, strip it from the |
8252 | output file. This is mostly to handle .rela.bss and | |
8253 | .rela.plt. We must create both sections in | |
8254 | create_dynamic_sections, because they must be created | |
8255 | before the linker maps input sections to output | |
8256 | sections. The linker does that before | |
8257 | adjust_dynamic_symbol is called, and it is that | |
8258 | function which decides whether anything needs to go | |
8259 | into these sections. */ | |
8423293d | 8260 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8261 | continue; |
8262 | } | |
8263 | ||
c456f082 | 8264 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8265 | continue; |
8266 | ||
65f38f15 AM |
8267 | /* Allocate memory for the section contents. We use bfd_zalloc |
8268 | here in case unused entries are not reclaimed before the | |
8269 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8270 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8271 | sections instead of garbage. | |
8272 | We also rely on the section contents being zero when writing | |
8273 | the GOT. */ | |
eea6121a | 8274 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8275 | if (s->contents == NULL) |
b34976b6 | 8276 | return FALSE; |
5bd4f169 AM |
8277 | } |
8278 | ||
e717da7e AM |
8279 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8280 | { | |
0c8d6e5c | 8281 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
8282 | continue; |
8283 | ||
e717da7e AM |
8284 | s = ppc64_elf_tdata (ibfd)->got; |
8285 | if (s != NULL && s != htab->got) | |
8286 | { | |
eea6121a | 8287 | if (s->size == 0) |
8423293d | 8288 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8289 | else |
8290 | { | |
eea6121a | 8291 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8292 | if (s->contents == NULL) |
8293 | return FALSE; | |
8294 | } | |
8295 | } | |
8296 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8297 | if (s != NULL) | |
8298 | { | |
eea6121a | 8299 | if (s->size == 0) |
8423293d | 8300 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8301 | else |
8302 | { | |
eea6121a | 8303 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8304 | if (s->contents == NULL) |
8305 | return FALSE; | |
8306 | relocs = TRUE; | |
8307 | s->reloc_count = 0; | |
8308 | } | |
8309 | } | |
8310 | } | |
8311 | ||
e86ce104 | 8312 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8313 | { |
8314 | /* Add some entries to the .dynamic section. We fill in the | |
8315 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8316 | must add the entries now so that we get the correct size for | |
8317 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8318 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8319 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8320 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8321 | |
36af4a4e | 8322 | if (info->executable) |
5bd4f169 | 8323 | { |
dc810e39 | 8324 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8325 | return FALSE; |
5bd4f169 AM |
8326 | } |
8327 | ||
eea6121a | 8328 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8329 | { |
dc810e39 AM |
8330 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8331 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8332 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8333 | || !add_dynamic_entry (DT_JMPREL, 0) |
8334 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8335 | return FALSE; |
5bd4f169 AM |
8336 | } |
8337 | ||
19397422 AM |
8338 | if (NO_OPD_RELOCS) |
8339 | { | |
8340 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8341 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8342 | return FALSE; |
19397422 AM |
8343 | } |
8344 | ||
5bd4f169 AM |
8345 | if (relocs) |
8346 | { | |
dc810e39 AM |
8347 | if (!add_dynamic_entry (DT_RELA, 0) |
8348 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8349 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8350 | return FALSE; |
5bd4f169 | 8351 | |
65f38f15 AM |
8352 | /* If any dynamic relocs apply to a read-only section, |
8353 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8354 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8355 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8356 | |
65f38f15 | 8357 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8358 | { |
65f38f15 | 8359 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8360 | return FALSE; |
5bd4f169 | 8361 | } |
5bd4f169 | 8362 | } |
5bd4f169 | 8363 | } |
65f38f15 | 8364 | #undef add_dynamic_entry |
5bd4f169 | 8365 | |
b34976b6 | 8366 | return TRUE; |
5bd4f169 AM |
8367 | } |
8368 | ||
721956f4 | 8369 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8370 | |
4ce794b7 AM |
8371 | static inline enum ppc_stub_type |
8372 | ppc_type_of_stub (asection *input_sec, | |
8373 | const Elf_Internal_Rela *rel, | |
8374 | struct ppc_link_hash_entry **hash, | |
8375 | bfd_vma destination) | |
5bd4f169 | 8376 | { |
721956f4 AM |
8377 | struct ppc_link_hash_entry *h = *hash; |
8378 | bfd_vma location; | |
8379 | bfd_vma branch_offset; | |
8380 | bfd_vma max_branch_offset; | |
4ce794b7 | 8381 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8382 | |
721956f4 AM |
8383 | if (h != NULL) |
8384 | { | |
7fe2b9a6 AM |
8385 | struct ppc_link_hash_entry *fdh = h; |
8386 | if (fdh->oh != NULL | |
8387 | && fdh->oh->is_func_descriptor) | |
8388 | fdh = fdh->oh; | |
8387904d | 8389 | |
7fe2b9a6 | 8390 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8391 | { |
411e1bfb | 8392 | struct plt_entry *ent; |
8387904d | 8393 | |
7fe2b9a6 | 8394 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8395 | if (ent->addend == rel->r_addend |
8396 | && ent->plt.offset != (bfd_vma) -1) | |
8397 | { | |
7fe2b9a6 | 8398 | *hash = fdh; |
411e1bfb AM |
8399 | return ppc_stub_plt_call; |
8400 | } | |
5bd4f169 AM |
8401 | } |
8402 | ||
7fe2b9a6 AM |
8403 | /* Here, we know we don't have a plt entry. If we don't have a |
8404 | either a defined function descriptor or a defined entry symbol | |
8405 | in a regular object file, then it is pointless trying to make | |
8406 | any other type of stub. */ | |
8407 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8408 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8409 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8410 | && !((h->elf.root.type == bfd_link_hash_defined | |
8411 | || h->elf.root.type == bfd_link_hash_defweak) | |
8412 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8413 | return ppc_stub_none; |
5d1634d7 | 8414 | } |
5d1634d7 | 8415 | |
721956f4 AM |
8416 | /* Determine where the call point is. */ |
8417 | location = (input_sec->output_offset | |
8418 | + input_sec->output_section->vma | |
8419 | + rel->r_offset); | |
5d1634d7 | 8420 | |
721956f4 AM |
8421 | branch_offset = destination - location; |
8422 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8423 | |
721956f4 AM |
8424 | /* Determine if a long branch stub is needed. */ |
8425 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8426 | if (r_type != R_PPC64_REL24) |
721956f4 | 8427 | max_branch_offset = 1 << 15; |
5d1634d7 | 8428 | |
721956f4 AM |
8429 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8430 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8431 | is needed later. */ | |
8432 | return ppc_stub_long_branch; | |
5d1634d7 | 8433 | |
721956f4 | 8434 | return ppc_stub_none; |
5d1634d7 AM |
8435 | } |
8436 | ||
8437 | /* Build a .plt call stub. */ | |
8438 | ||
4ce794b7 | 8439 | static inline bfd_byte * |
176a0d42 | 8440 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
8441 | { |
8442 | #define PPC_LO(v) ((v) & 0xffff) | |
8443 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8444 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8445 | ||
ac2df442 AM |
8446 | if (PPC_HA (offset) != 0) |
8447 | { | |
176a0d42 AM |
8448 | if (r != NULL) |
8449 | { | |
8450 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8451 | r[1].r_offset = r[0].r_offset + 8; | |
8452 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8453 | r[1].r_addend = r[0].r_addend; | |
8454 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8455 | { | |
8456 | r[2].r_offset = r[1].r_offset + 4; | |
8457 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
8458 | r[2].r_addend = r[0].r_addend; | |
8459 | } | |
8460 | else | |
8461 | { | |
8462 | r[2].r_offset = r[1].r_offset + 8; | |
8463 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8464 | r[2].r_addend = r[0].r_addend + 8; | |
8465 | r[3].r_offset = r[2].r_offset + 4; | |
8466 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8467 | r[3].r_addend = r[0].r_addend + 16; | |
8468 | } | |
8469 | } | |
ac2df442 AM |
8470 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
8471 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8472 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8473 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8474 | { | |
8475 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8476 | offset = 0; | |
8477 | } | |
8478 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8479 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8480 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8481 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8482 | } | |
8483 | else | |
8484 | { | |
176a0d42 AM |
8485 | if (r != NULL) |
8486 | { | |
8487 | r[0].r_offset += 4; | |
8488 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8489 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8490 | { | |
8491 | r[1].r_offset = r[0].r_offset + 4; | |
8492 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
8493 | r[1].r_addend = r[0].r_addend; | |
8494 | } | |
8495 | else | |
8496 | { | |
8497 | r[1].r_offset = r[0].r_offset + 8; | |
8498 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8499 | r[1].r_addend = r[0].r_addend + 16; | |
8500 | r[2].r_offset = r[1].r_offset + 4; | |
8501 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8502 | r[2].r_addend = r[0].r_addend + 8; | |
8503 | } | |
8504 | } | |
ac2df442 AM |
8505 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
8506 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8507 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8508 | { | |
8509 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8510 | offset = 0; | |
8511 | } | |
8512 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8513 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8514 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8515 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8516 | } | |
5d1634d7 AM |
8517 | return p; |
8518 | } | |
8519 | ||
176a0d42 AM |
8520 | static Elf_Internal_Rela * |
8521 | get_relocs (asection *sec, int count) | |
8522 | { | |
8523 | Elf_Internal_Rela *relocs; | |
8524 | struct bfd_elf_section_data *elfsec_data; | |
8525 | ||
8526 | elfsec_data = elf_section_data (sec); | |
8527 | relocs = elfsec_data->relocs; | |
8528 | if (relocs == NULL) | |
8529 | { | |
8530 | bfd_size_type relsize; | |
8531 | relsize = sec->reloc_count * sizeof (*relocs); | |
8532 | relocs = bfd_alloc (sec->owner, relsize); | |
8533 | if (relocs == NULL) | |
8534 | return NULL; | |
8535 | elfsec_data->relocs = relocs; | |
8536 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
8537 | * sizeof (Elf64_External_Rela)); | |
8538 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
8539 | sec->reloc_count = 0; | |
8540 | } | |
8541 | relocs += sec->reloc_count; | |
8542 | sec->reloc_count += count; | |
8543 | return relocs; | |
8544 | } | |
8545 | ||
b34976b6 | 8546 | static bfd_boolean |
4ce794b7 | 8547 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8548 | { |
721956f4 AM |
8549 | struct ppc_stub_hash_entry *stub_entry; |
8550 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8551 | struct bfd_link_info *info; |
8552 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8553 | bfd_byte *loc; |
8554 | bfd_byte *p; | |
411e1bfb | 8555 | struct plt_entry *ent; |
ee75fd95 | 8556 | bfd_vma dest, off; |
721956f4 | 8557 | int size; |
176a0d42 | 8558 | Elf_Internal_Rela *r; |
5d1634d7 | 8559 | |
721956f4 AM |
8560 | /* Massage our args to the form they really have. */ |
8561 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8562 | info = in_arg; |
5d1634d7 | 8563 | |
5d1634d7 AM |
8564 | htab = ppc_hash_table (info); |
8565 | ||
721956f4 | 8566 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8567 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8568 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8569 | |
4ce794b7 | 8570 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8571 | switch (stub_entry->stub_type) |
5d1634d7 | 8572 | { |
721956f4 | 8573 | case ppc_stub_long_branch: |
ad8e1ba5 | 8574 | case ppc_stub_long_branch_r2off: |
721956f4 | 8575 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8576 | off = dest = (stub_entry->target_value |
8577 | + stub_entry->target_section->output_offset | |
8578 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8579 | |
721956f4 AM |
8580 | /* And this is where we are coming from. */ |
8581 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8582 | + stub_entry->stub_sec->output_offset |
8583 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8584 | |
ac2df442 AM |
8585 | size = 4; |
8586 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
8587 | { |
8588 | bfd_vma r2off; | |
8589 | ||
8590 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8591 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8592 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8593 | loc += 4; |
ac2df442 AM |
8594 | size = 12; |
8595 | if (PPC_HA (r2off) != 0) | |
8596 | { | |
8597 | size = 16; | |
8598 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8599 | loc += 4; | |
8600 | } | |
97b639ba | 8601 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 8602 | loc += 4; |
ac2df442 | 8603 | off -= size - 4; |
ad8e1ba5 | 8604 | } |
97b639ba | 8605 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8606 | |
5c3dead3 AM |
8607 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8608 | { | |
8609 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8610 | stub_entry->root.string); | |
8611 | htab->stub_error = TRUE; | |
8612 | return FALSE; | |
8613 | } | |
ee75fd95 AM |
8614 | |
8615 | if (info->emitrelocations) | |
8616 | { | |
176a0d42 AM |
8617 | r = get_relocs (stub_entry->stub_sec, 1); |
8618 | if (r == NULL) | |
8619 | return FALSE; | |
ee75fd95 AM |
8620 | r->r_offset = loc - stub_entry->stub_sec->contents; |
8621 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8622 | r->r_addend = dest; | |
8623 | if (stub_entry->h != NULL) | |
8624 | { | |
8625 | struct elf_link_hash_entry **hashes; | |
8626 | unsigned long symndx; | |
8627 | struct ppc_link_hash_entry *h; | |
8628 | ||
8629 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8630 | if (hashes == NULL) | |
8631 | { | |
8632 | bfd_size_type hsize; | |
8633 | ||
8634 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8635 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8636 | if (hashes == NULL) | |
8637 | return FALSE; | |
8638 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8639 | htab->stub_globals = 1; | |
8640 | } | |
8641 | symndx = htab->stub_globals++; | |
8642 | h = stub_entry->h; | |
8643 | hashes[symndx] = &h->elf; | |
8644 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8645 | if (h->oh != NULL && h->oh->is_func) | |
8646 | h = h->oh; | |
8647 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8648 | /* H is an opd symbol. The addend must be zero. */ | |
8649 | r->r_addend = 0; | |
8650 | else | |
8651 | { | |
8652 | off = (h->elf.root.u.def.value | |
8653 | + h->elf.root.u.def.section->output_offset | |
8654 | + h->elf.root.u.def.section->output_section->vma); | |
8655 | r->r_addend -= off; | |
8656 | } | |
8657 | } | |
8658 | } | |
721956f4 | 8659 | break; |
e86ce104 | 8660 | |
721956f4 | 8661 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8662 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8663 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8664 | stub_entry->root.string + 9, | |
b34976b6 | 8665 | FALSE, FALSE); |
721956f4 AM |
8666 | if (br_entry == NULL) |
8667 | { | |
8668 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8669 | stub_entry->root.string); |
b34976b6 AM |
8670 | htab->stub_error = TRUE; |
8671 | return FALSE; | |
721956f4 AM |
8672 | } |
8673 | ||
176a0d42 AM |
8674 | dest = (stub_entry->target_value |
8675 | + stub_entry->target_section->output_offset | |
8676 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 8677 | |
176a0d42 | 8678 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 8679 | htab->brlt->contents + br_entry->offset); |
721956f4 | 8680 | |
f94498ff | 8681 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 8682 | { |
f94498ff | 8683 | br_entry->iter = 0; |
84f5d08e | 8684 | |
f94498ff | 8685 | if (htab->relbrlt != NULL) |
84f5d08e | 8686 | { |
f94498ff AM |
8687 | /* Create a reloc for the branch lookup table entry. */ |
8688 | Elf_Internal_Rela rela; | |
8689 | bfd_byte *rl; | |
8690 | ||
8691 | rela.r_offset = (br_entry->offset | |
8692 | + htab->brlt->output_offset | |
8693 | + htab->brlt->output_section->vma); | |
8694 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8695 | rela.r_addend = dest; |
f94498ff AM |
8696 | |
8697 | rl = htab->relbrlt->contents; | |
8698 | rl += (htab->relbrlt->reloc_count++ | |
8699 | * sizeof (Elf64_External_Rela)); | |
8700 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
8701 | } | |
8702 | else if (info->emitrelocations) | |
8703 | { | |
176a0d42 AM |
8704 | r = get_relocs (htab->brlt, 1); |
8705 | if (r == NULL) | |
8706 | return FALSE; | |
8707 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
8708 | normal reloc processing. Symbols and offsets are not | |
8709 | translated from input file to output file form, so | |
8710 | set up the offset per the output file. */ | |
f94498ff AM |
8711 | r->r_offset = (br_entry->offset |
8712 | + htab->brlt->output_offset | |
8713 | + htab->brlt->output_section->vma); | |
8714 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8715 | r->r_addend = dest; |
84f5d08e | 8716 | } |
84f5d08e | 8717 | } |
721956f4 | 8718 | |
176a0d42 AM |
8719 | dest = (br_entry->offset |
8720 | + htab->brlt->output_offset | |
8721 | + htab->brlt->output_section->vma); | |
8722 | ||
8723 | off = (dest | |
4ce794b7 | 8724 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 8725 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8726 | |
ad8e1ba5 | 8727 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8728 | { |
8729 | (*_bfd_error_handler) | |
e86ce104 | 8730 | (_("linkage table error against `%s'"), |
721956f4 | 8731 | stub_entry->root.string); |
5d1634d7 | 8732 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8733 | htab->stub_error = TRUE; |
8734 | return FALSE; | |
5d1634d7 | 8735 | } |
41bd81ab | 8736 | |
176a0d42 AM |
8737 | if (info->emitrelocations) |
8738 | { | |
8739 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
8740 | if (r == NULL) | |
8741 | return FALSE; | |
8742 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
8743 | if (bfd_big_endian (info->output_bfd)) |
8744 | r[0].r_offset += 2; | |
176a0d42 AM |
8745 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
8746 | r[0].r_offset += 4; | |
8747 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8748 | r[0].r_addend = dest; | |
8749 | if (PPC_HA (off) != 0) | |
8750 | { | |
8751 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8752 | r[1].r_offset = r[0].r_offset + 4; | |
8753 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8754 | r[1].r_addend = r[0].r_addend; | |
8755 | } | |
8756 | } | |
8757 | ||
ad8e1ba5 AM |
8758 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8759 | { | |
176a0d42 | 8760 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8761 | { |
8762 | size = 16; | |
176a0d42 | 8763 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8764 | loc += 4; |
176a0d42 | 8765 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8766 | } |
8767 | else | |
8768 | { | |
8769 | size = 12; | |
176a0d42 | 8770 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 8771 | } |
ad8e1ba5 AM |
8772 | } |
8773 | else | |
8774 | { | |
8775 | bfd_vma r2off; | |
8776 | ||
8777 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8778 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8779 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8780 | loc += 4; |
ac2df442 | 8781 | size = 20; |
176a0d42 | 8782 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8783 | { |
8784 | size += 4; | |
176a0d42 | 8785 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8786 | loc += 4; |
176a0d42 | 8787 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8788 | loc += 4; |
8789 | } | |
8790 | else | |
8791 | { | |
176a0d42 | 8792 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
8793 | loc += 4; |
8794 | } | |
8795 | ||
8796 | if (PPC_HA (r2off) != 0) | |
8797 | { | |
8798 | size += 4; | |
8799 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8800 | loc += 4; | |
8801 | } | |
97b639ba | 8802 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8803 | } |
8804 | loc += 4; | |
97b639ba | 8805 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8806 | loc += 4; |
97b639ba | 8807 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8808 | break; |
5d1634d7 | 8809 | |
721956f4 | 8810 | case ppc_stub_plt_call: |
c862ae31 AM |
8811 | /* Do the best we can for shared libraries built without |
8812 | exporting ".foo" for each "foo". This can happen when symbol | |
8813 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8814 | if (stub_entry->h->oh != NULL |
8815 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8816 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8817 | { |
8818 | /* Point the symbol at the stub. There may be multiple stubs, | |
8819 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8820 | defined somewhere. Maybe defining the symbol in the stub |
8821 | section is a silly idea. If we didn't do this, htab->top_id | |
8822 | could disappear. */ | |
34814b9f AM |
8823 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8824 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8825 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8826 | } |
8827 | ||
721956f4 | 8828 | /* Now build the stub. */ |
176a0d42 | 8829 | dest = (bfd_vma) -1; |
411e1bfb AM |
8830 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8831 | if (ent->addend == stub_entry->addend) | |
8832 | { | |
176a0d42 | 8833 | dest = ent->plt.offset; |
411e1bfb AM |
8834 | break; |
8835 | } | |
176a0d42 | 8836 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
8837 | abort (); |
8838 | ||
176a0d42 AM |
8839 | dest &= ~ (bfd_vma) 1; |
8840 | dest += (htab->plt->output_offset | |
8841 | + htab->plt->output_section->vma); | |
8842 | ||
8843 | off = (dest | |
8844 | - elf_gp (htab->plt->output_section->owner) | |
8845 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
721956f4 | 8846 | |
ad8e1ba5 | 8847 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8848 | { |
8849 | (*_bfd_error_handler) | |
8850 | (_("linkage table error against `%s'"), | |
8851 | stub_entry->h->elf.root.root.string); | |
8852 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8853 | htab->stub_error = TRUE; |
8854 | return FALSE; | |
721956f4 AM |
8855 | } |
8856 | ||
176a0d42 AM |
8857 | r = NULL; |
8858 | if (info->emitrelocations) | |
8859 | { | |
8860 | r = get_relocs (stub_entry->stub_sec, | |
8861 | (2 + (PPC_HA (off) != 0) | |
8862 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
8863 | if (r == NULL) | |
8864 | return FALSE; | |
8865 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
8866 | if (bfd_big_endian (info->output_bfd)) |
8867 | r[0].r_offset += 2; | |
176a0d42 AM |
8868 | r[0].r_addend = dest; |
8869 | } | |
8870 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
8871 | size = p - loc; |
8872 | break; | |
8873 | ||
8874 | default: | |
8875 | BFD_FAIL (); | |
b34976b6 | 8876 | return FALSE; |
721956f4 AM |
8877 | } |
8878 | ||
eea6121a | 8879 | stub_entry->stub_sec->size += size; |
97b639ba | 8880 | |
ee75fd95 | 8881 | if (htab->emit_stub_syms) |
97b639ba AM |
8882 | { |
8883 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8884 | size_t len1, len2; |
8885 | char *name; | |
8886 | const char *const stub_str[] = { "long_branch", | |
8887 | "long_branch_r2off", | |
8888 | "plt_branch", | |
8889 | "plt_branch_r2off", | |
8890 | "plt_call" }; | |
8891 | ||
8892 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8893 | len2 = strlen (stub_entry->root.string); | |
8894 | name = bfd_malloc (len1 + len2 + 2); | |
8895 | if (name == NULL) | |
8896 | return FALSE; | |
8897 | memcpy (name, stub_entry->root.string, 9); | |
8898 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8899 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8900 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8901 | if (h == NULL) |
8902 | return FALSE; | |
8903 | if (h->root.type == bfd_link_hash_new) | |
8904 | { | |
8905 | h->root.type = bfd_link_hash_defined; | |
8906 | h->root.u.def.section = stub_entry->stub_sec; | |
8907 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8908 | h->ref_regular = 1; |
8909 | h->def_regular = 1; | |
8910 | h->ref_regular_nonweak = 1; | |
8911 | h->forced_local = 1; | |
8912 | h->non_elf = 0; | |
97b639ba AM |
8913 | } |
8914 | } | |
8915 | ||
b34976b6 | 8916 | return TRUE; |
721956f4 AM |
8917 | } |
8918 | ||
8919 | /* As above, but don't actually build the stub. Just bump offset so | |
8920 | we know stub section sizes, and select plt_branch stubs where | |
8921 | long_branch stubs won't do. */ | |
8922 | ||
b34976b6 | 8923 | static bfd_boolean |
4ce794b7 | 8924 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8925 | { |
8926 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8927 | struct bfd_link_info *info; |
721956f4 AM |
8928 | struct ppc_link_hash_table *htab; |
8929 | bfd_vma off; | |
8930 | int size; | |
8931 | ||
8932 | /* Massage our args to the form they really have. */ | |
8933 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8934 | info = in_arg; |
8935 | ||
8936 | htab = ppc_hash_table (info); | |
721956f4 AM |
8937 | |
8938 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8939 | { | |
411e1bfb | 8940 | struct plt_entry *ent; |
58ac9f71 | 8941 | off = (bfd_vma) -1; |
411e1bfb AM |
8942 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8943 | if (ent->addend == stub_entry->addend) | |
8944 | { | |
8945 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8946 | break; | |
8947 | } | |
58ac9f71 | 8948 | if (off >= (bfd_vma) -2) |
411e1bfb | 8949 | abort (); |
4ce794b7 AM |
8950 | off += (htab->plt->output_offset |
8951 | + htab->plt->output_section->vma | |
8952 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8953 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8954 | |
ad8e1ba5 | 8955 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
8956 | if (PPC_HA (off) == 0) |
8957 | size -= 4; | |
4ce794b7 | 8958 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 8959 | size += 4; |
176a0d42 AM |
8960 | if (info->emitrelocations) |
8961 | { | |
8962 | stub_entry->stub_sec->reloc_count | |
8963 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
8964 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8965 | } | |
721956f4 AM |
8966 | } |
8967 | else | |
8968 | { | |
ad8e1ba5 AM |
8969 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8970 | variants. */ | |
ac2df442 AM |
8971 | bfd_vma r2off = 0; |
8972 | ||
721956f4 AM |
8973 | off = (stub_entry->target_value |
8974 | + stub_entry->target_section->output_offset | |
8975 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8976 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8977 | + stub_entry->stub_sec->output_offset |
8978 | + stub_entry->stub_sec->output_section->vma); | |
8979 | ||
ad8e1ba5 AM |
8980 | /* Reset the stub type from the plt variant in case we now |
8981 | can reach with a shorter stub. */ | |
8982 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8983 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8984 | ||
8985 | size = 4; | |
8986 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8987 | { | |
ac2df442 AM |
8988 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
8989 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8990 | size = 12; | |
8991 | if (PPC_HA (r2off) != 0) | |
8992 | size = 16; | |
8993 | off -= size - 4; | |
ad8e1ba5 AM |
8994 | } |
8995 | ||
8996 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8997 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8998 | { | |
8999 | struct ppc_branch_hash_entry *br_entry; | |
9000 | ||
9001 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
9002 | stub_entry->root.string + 9, | |
b34976b6 | 9003 | TRUE, FALSE); |
721956f4 AM |
9004 | if (br_entry == NULL) |
9005 | { | |
9006 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 9007 | stub_entry->root.string); |
b34976b6 AM |
9008 | htab->stub_error = TRUE; |
9009 | return FALSE; | |
721956f4 AM |
9010 | } |
9011 | ||
9012 | if (br_entry->iter != htab->stub_iteration) | |
9013 | { | |
9014 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
9015 | br_entry->offset = htab->brlt->size; |
9016 | htab->brlt->size += 8; | |
63bc6f6c | 9017 | |
ee75fd95 | 9018 | if (htab->relbrlt != NULL) |
eea6121a | 9019 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
9020 | else if (info->emitrelocations) |
9021 | { | |
9022 | htab->brlt->reloc_count += 1; | |
9023 | htab->brlt->flags |= SEC_RELOC; | |
9024 | } | |
721956f4 | 9025 | } |
ad8e1ba5 AM |
9026 | |
9027 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9028 | off = (br_entry->offset |
9029 | + htab->brlt->output_offset | |
9030 | + htab->brlt->output_section->vma | |
9031 | - elf_gp (htab->brlt->output_section->owner) | |
9032 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9033 | ||
176a0d42 AM |
9034 | if (info->emitrelocations) |
9035 | { | |
9036 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9037 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9038 | } | |
9039 | ||
ac2df442 AM |
9040 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9041 | { | |
9042 | size = 12; | |
176a0d42 | 9043 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9044 | size = 16; |
9045 | } | |
9046 | else | |
9047 | { | |
9048 | size = 20; | |
176a0d42 | 9049 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9050 | size += 4; |
9051 | ||
9052 | if (PPC_HA (r2off) != 0) | |
9053 | size += 4; | |
9054 | } | |
721956f4 | 9055 | } |
84f5d08e AM |
9056 | else if (info->emitrelocations) |
9057 | { | |
9058 | stub_entry->stub_sec->reloc_count += 1; | |
9059 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9060 | } | |
721956f4 AM |
9061 | } |
9062 | ||
eea6121a | 9063 | stub_entry->stub_sec->size += size; |
b34976b6 | 9064 | return TRUE; |
721956f4 AM |
9065 | } |
9066 | ||
9067 | /* Set up various things so that we can make a list of input sections | |
9068 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9069 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9070 | |
9071 | int | |
4c52953f AM |
9072 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
9073 | struct bfd_link_info *info, | |
9074 | int no_multi_toc) | |
721956f4 AM |
9075 | { |
9076 | bfd *input_bfd; | |
734b6cf9 | 9077 | int top_id, top_index, id; |
721956f4 | 9078 | asection *section; |
734b6cf9 | 9079 | asection **input_list; |
721956f4 AM |
9080 | bfd_size_type amt; |
9081 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9082 | ||
4c52953f AM |
9083 | htab->no_multi_toc = no_multi_toc; |
9084 | ||
4ce794b7 | 9085 | if (htab->brlt == NULL) |
721956f4 AM |
9086 | return 0; |
9087 | ||
1e2f5b6e | 9088 | /* Find the top input section id. */ |
3d6f9012 | 9089 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9090 | input_bfd != NULL; |
9091 | input_bfd = input_bfd->link_next) | |
9092 | { | |
721956f4 AM |
9093 | for (section = input_bfd->sections; |
9094 | section != NULL; | |
9095 | section = section->next) | |
9096 | { | |
9097 | if (top_id < section->id) | |
9098 | top_id = section->id; | |
9099 | } | |
9100 | } | |
721956f4 | 9101 | |
8f3bab57 | 9102 | htab->top_id = top_id; |
721956f4 | 9103 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9104 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9105 | if (htab->stub_group == NULL) |
9106 | return -1; | |
9107 | ||
3d6f9012 AM |
9108 | /* Set toc_off for com, und, abs and ind sections. */ |
9109 | for (id = 0; id < 3; id++) | |
9110 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9111 | |
3d6f9012 | 9112 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
9113 | |
9114 | /* We can't use output_bfd->section_count here to find the top output | |
9115 | section index as some sections may have been removed, and | |
8423293d | 9116 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
9117 | for (section = output_bfd->sections, top_index = 0; |
9118 | section != NULL; | |
9119 | section = section->next) | |
9120 | { | |
9121 | if (top_index < section->index) | |
9122 | top_index = section->index; | |
9123 | } | |
9124 | ||
9125 | htab->top_index = top_index; | |
9126 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 9127 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
9128 | htab->input_list = input_list; |
9129 | if (input_list == NULL) | |
9130 | return -1; | |
9131 | ||
721956f4 AM |
9132 | return 1; |
9133 | } | |
9134 | ||
e717da7e AM |
9135 | /* The linker repeatedly calls this function for each TOC input section |
9136 | and linker generated GOT section. Group input bfds such that the toc | |
9137 | within a group is less than 64k in size. Will break with cute linker | |
9138 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
9139 | |
9140 | void | |
4ce794b7 | 9141 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
9142 | { |
9143 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9144 | ||
4c52953f AM |
9145 | if (!htab->no_multi_toc) |
9146 | { | |
9147 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
9148 | bfd_vma off = addr - htab->toc_curr; | |
9149 | ||
9150 | if (off + isec->size > 0x10000) | |
9151 | htab->toc_curr = addr; | |
99877b66 | 9152 | |
4c52953f AM |
9153 | elf_gp (isec->owner) = (htab->toc_curr |
9154 | - elf_gp (isec->output_section->owner) | |
9155 | + TOC_BASE_OFF); | |
9156 | } | |
ad8e1ba5 AM |
9157 | } |
9158 | ||
9159 | /* Called after the last call to the above function. */ | |
9160 | ||
9161 | void | |
4c52953f | 9162 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
9163 | { |
9164 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 9165 | |
4c52953f AM |
9166 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
9167 | ||
ad8e1ba5 AM |
9168 | /* toc_curr tracks the TOC offset used for code sections below in |
9169 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 9170 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
9171 | } |
9172 | ||
9b5ecbd0 AM |
9173 | /* No toc references were found in ISEC. If the code in ISEC makes no |
9174 | calls, then there's no need to use toc adjusting stubs when branching | |
9175 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
9176 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
9177 | needed, and 2 if a cyclical call-graph was found but no other reason | |
9178 | for a stub was detected. If called from the top level, a return of | |
9179 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
9180 | |
9181 | static int | |
4ce794b7 | 9182 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 9183 | { |
4c52953f AM |
9184 | Elf_Internal_Rela *relstart, *rel; |
9185 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 9186 | int ret; |
4c52953f | 9187 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 9188 | |
772119ce AM |
9189 | /* We know none of our code bearing sections will need toc stubs. */ |
9190 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
9191 | return 0; | |
9192 | ||
eea6121a | 9193 | if (isec->size == 0) |
082c50f8 AM |
9194 | return 0; |
9195 | ||
4c52953f AM |
9196 | if (isec->output_section == NULL) |
9197 | return 0; | |
9198 | ||
4c52953f AM |
9199 | if (isec->reloc_count == 0) |
9200 | return 0; | |
9201 | ||
9202 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
9203 | info->keep_memory); | |
9204 | if (relstart == NULL) | |
9205 | return -1; | |
9206 | ||
9207 | /* Look for branches to outside of this section. */ | |
9208 | local_syms = NULL; | |
9209 | ret = 0; | |
9210 | htab = ppc_hash_table (info); | |
9211 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 9212 | { |
4c52953f AM |
9213 | enum elf_ppc64_reloc_type r_type; |
9214 | unsigned long r_symndx; | |
9215 | struct elf_link_hash_entry *h; | |
90aecf7a | 9216 | struct ppc_link_hash_entry *eh; |
4c52953f AM |
9217 | Elf_Internal_Sym *sym; |
9218 | asection *sym_sec; | |
74f0fb50 | 9219 | struct _opd_sec_data *opd; |
4c52953f AM |
9220 | bfd_vma sym_value; |
9221 | bfd_vma dest; | |
9222 | ||
9223 | r_type = ELF64_R_TYPE (rel->r_info); | |
9224 | if (r_type != R_PPC64_REL24 | |
9225 | && r_type != R_PPC64_REL14 | |
9226 | && r_type != R_PPC64_REL14_BRTAKEN | |
9227 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
9228 | continue; | |
9229 | ||
9230 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9231 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
9232 | isec->owner)) | |
9b5ecbd0 | 9233 | { |
4c52953f AM |
9234 | ret = -1; |
9235 | break; | |
9b5ecbd0 | 9236 | } |
9b5ecbd0 | 9237 | |
2917689a | 9238 | /* Calls to dynamic lib functions go through a plt call stub |
90aecf7a AM |
9239 | that uses r2. */ |
9240 | eh = (struct ppc_link_hash_entry *) h; | |
9241 | if (eh != NULL | |
9242 | && (eh->elf.plt.plist != NULL | |
9243 | || (eh->oh != NULL | |
9244 | && eh->oh->elf.plt.plist != NULL))) | |
2917689a | 9245 | { |
90aecf7a AM |
9246 | ret = 1; |
9247 | break; | |
2917689a AM |
9248 | } |
9249 | ||
90aecf7a AM |
9250 | if (sym_sec == NULL) |
9251 | /* Ignore other undefined symbols. */ | |
9252 | continue; | |
9253 | ||
2917689a AM |
9254 | /* Assume branches to other sections not included in the link need |
9255 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
9256 | if (sym_sec->output_section == NULL) |
9257 | { | |
9258 | ret = 1; | |
9259 | break; | |
9260 | } | |
9261 | ||
9262 | if (h == NULL) | |
9263 | sym_value = sym->st_value; | |
9264 | else | |
9265 | { | |
9266 | if (h->root.type != bfd_link_hash_defined | |
9267 | && h->root.type != bfd_link_hash_defweak) | |
9268 | abort (); | |
9269 | sym_value = h->root.u.def.value; | |
9270 | } | |
9271 | sym_value += rel->r_addend; | |
9272 | ||
9273 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
9274 | opd = get_opd_info (sym_sec); |
9275 | if (opd != NULL) | |
4c52953f | 9276 | { |
74f0fb50 | 9277 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
9278 | { |
9279 | long adjust; | |
9280 | ||
74f0fb50 | 9281 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
9282 | if (adjust == -1) |
9283 | /* Assume deleted functions won't ever be called. */ | |
9284 | continue; | |
9285 | sym_value += adjust; | |
9286 | } | |
9287 | ||
9288 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9289 | if (dest == (bfd_vma) -1) | |
9290 | continue; | |
9291 | } | |
9292 | else | |
9293 | dest = (sym_value | |
9294 | + sym_sec->output_offset | |
9295 | + sym_sec->output_section->vma); | |
9296 | ||
9297 | /* Ignore branch to self. */ | |
9298 | if (sym_sec == isec) | |
9299 | continue; | |
9300 | ||
9301 | /* If the called function uses the toc, we need a stub. */ | |
9302 | if (sym_sec->has_toc_reloc | |
9303 | || sym_sec->makes_toc_func_call) | |
9304 | { | |
9305 | ret = 1; | |
9306 | break; | |
9307 | } | |
9308 | ||
9309 | /* Assume any branch that needs a long branch stub might in fact | |
9310 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9311 | else if (dest - (isec->output_offset | |
9312 | + isec->output_section->vma | |
9313 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9314 | { |
9315 | ret = 1; | |
9316 | break; | |
9317 | } | |
4c52953f AM |
9318 | |
9319 | /* If calling back to a section in the process of being tested, we | |
9320 | can't say for sure that no toc adjusting stubs are needed, so | |
9321 | don't return zero. */ | |
9322 | else if (sym_sec->call_check_in_progress) | |
9323 | ret = 2; | |
9324 | ||
9325 | /* Branches to another section that itself doesn't have any TOC | |
9326 | references are OK. Recursively call ourselves to check. */ | |
9327 | else if (sym_sec->id <= htab->top_id | |
9328 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9329 | { | |
9330 | int recur; | |
9331 | ||
9332 | /* Mark current section as indeterminate, so that other | |
9333 | sections that call back to current won't be marked as | |
9334 | known. */ | |
9335 | isec->call_check_in_progress = 1; | |
9336 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9337 | isec->call_check_in_progress = 0; | |
9338 | ||
9339 | if (recur < 0) | |
9340 | { | |
9341 | /* An error. Exit. */ | |
9342 | ret = -1; | |
9343 | break; | |
9344 | } | |
9345 | else if (recur <= 1) | |
9346 | { | |
9347 | /* Known result. Mark as checked and set section flag. */ | |
9348 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9349 | if (recur != 0) | |
9350 | { | |
9351 | sym_sec->makes_toc_func_call = 1; | |
9352 | ret = 1; | |
9353 | break; | |
9354 | } | |
9355 | } | |
9356 | else | |
9357 | { | |
9358 | /* Unknown result. Continue checking. */ | |
9359 | ret = 2; | |
9360 | } | |
9361 | } | |
9b5ecbd0 AM |
9362 | } |
9363 | ||
4c52953f | 9364 | if (local_syms != NULL |
0ffa91dd | 9365 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
9366 | free (local_syms); |
9367 | if (elf_section_data (isec)->relocs != relstart) | |
9368 | free (relstart); | |
9369 | ||
9b5ecbd0 AM |
9370 | return ret; |
9371 | } | |
9372 | ||
721956f4 AM |
9373 | /* The linker repeatedly calls this function for each input section, |
9374 | in the order that input sections are linked into output sections. | |
9375 | Build lists of input sections to determine groupings between which | |
9376 | we may insert linker stubs. */ | |
9377 | ||
9b5ecbd0 | 9378 | bfd_boolean |
4ce794b7 | 9379 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9380 | { |
9381 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9382 | ||
734b6cf9 AM |
9383 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9384 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9385 | { |
734b6cf9 | 9386 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9387 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9388 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9389 | /* This happens to make the list in reverse order, |
9390 | which is what we want. */ | |
734b6cf9 AM |
9391 | PREV_SEC (isec) = *list; |
9392 | *list = isec; | |
721956f4 | 9393 | } |
ad8e1ba5 | 9394 | |
4c52953f | 9395 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9396 | { |
4c52953f AM |
9397 | /* If a code section has a function that uses the TOC then we need |
9398 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9399 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9400 | can't find their function symbol (shouldn't ever happen now). |
9401 | Also specially treat .fixup for the linux kernel. .fixup | |
9402 | contains branches, but only back to the function that hit an | |
9403 | exception. */ | |
9404 | if (isec->has_toc_reloc | |
9405 | || (isec->flags & SEC_CODE) == 0 | |
9406 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9407 | { |
9408 | if (elf_gp (isec->owner) != 0) | |
9409 | htab->toc_curr = elf_gp (isec->owner); | |
9410 | } | |
9411 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9412 | { | |
9413 | int ret = toc_adjusting_stub_needed (info, isec); | |
9414 | if (ret < 0) | |
9415 | return FALSE; | |
9416 | else | |
9417 | isec->makes_toc_func_call = ret & 1; | |
9418 | } | |
9b5ecbd0 | 9419 | } |
ad8e1ba5 AM |
9420 | |
9421 | /* Functions that don't use the TOC can belong in any TOC group. | |
9422 | Use the last TOC base. This happens to make _init and _fini | |
9423 | pasting work. */ | |
9424 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9425 | return TRUE; |
721956f4 AM |
9426 | } |
9427 | ||
9428 | /* See whether we can group stub sections together. Grouping stub | |
9429 | sections may result in fewer stubs. More importantly, we need to | |
9430 | put all .init* and .fini* stubs at the beginning of the .init or | |
9431 | .fini output sections respectively, because glibc splits the | |
9432 | _init and _fini functions into multiple parts. Putting a stub in | |
9433 | the middle of a function is not a good idea. */ | |
9434 | ||
9435 | static void | |
4ce794b7 AM |
9436 | group_sections (struct ppc_link_hash_table *htab, |
9437 | bfd_size_type stub_group_size, | |
9438 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9439 | { |
7c8fe5c4 AM |
9440 | asection **list; |
9441 | bfd_size_type stub14_group_size; | |
9442 | bfd_boolean suppress_size_errors; | |
9443 | ||
9444 | suppress_size_errors = FALSE; | |
9445 | stub14_group_size = stub_group_size; | |
9446 | if (stub_group_size == 1) | |
9447 | { | |
9448 | /* Default values. */ | |
9449 | if (stubs_always_before_branch) | |
9450 | { | |
9451 | stub_group_size = 0x1e00000; | |
9452 | stub14_group_size = 0x7800; | |
9453 | } | |
9454 | else | |
9455 | { | |
9456 | stub_group_size = 0x1c00000; | |
9457 | stub14_group_size = 0x7000; | |
9458 | } | |
9459 | suppress_size_errors = TRUE; | |
9460 | } | |
9461 | ||
9462 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9463 | do |
721956f4 | 9464 | { |
734b6cf9 AM |
9465 | asection *tail = *list; |
9466 | while (tail != NULL) | |
721956f4 | 9467 | { |
734b6cf9 AM |
9468 | asection *curr; |
9469 | asection *prev; | |
9470 | bfd_size_type total; | |
9471 | bfd_boolean big_sec; | |
9472 | bfd_vma curr_toc; | |
9473 | ||
9474 | curr = tail; | |
eea6121a | 9475 | total = tail->size; |
7c8fe5c4 AM |
9476 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9477 | ? stub14_group_size : stub_group_size); | |
9478 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9479 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9480 | tail->owner, tail); | |
734b6cf9 AM |
9481 | curr_toc = htab->stub_group[tail->id].toc_off; |
9482 | ||
9483 | while ((prev = PREV_SEC (curr)) != NULL | |
9484 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9485 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9486 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9487 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9488 | curr = prev; |
9489 | ||
9490 | /* OK, the size from the start of CURR to the end is less | |
9491 | than stub_group_size and thus can be handled by one stub | |
9492 | section. (or the tail section is itself larger than | |
9493 | stub_group_size, in which case we may be toast.) We | |
9494 | should really be keeping track of the total size of stubs | |
9495 | added here, as stubs contribute to the final output | |
9496 | section size. That's a little tricky, and this way will | |
9497 | only break if stubs added make the total size more than | |
9498 | 2^25, ie. for the default stub_group_size, if stubs total | |
9499 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9500 | do | |
721956f4 AM |
9501 | { |
9502 | prev = PREV_SEC (tail); | |
734b6cf9 | 9503 | /* Set up this stub group. */ |
721956f4 AM |
9504 | htab->stub_group[tail->id].link_sec = curr; |
9505 | } | |
734b6cf9 AM |
9506 | while (tail != curr && (tail = prev) != NULL); |
9507 | ||
9508 | /* But wait, there's more! Input sections up to stub_group_size | |
9509 | bytes before the stub section can be handled by it too. | |
9510 | Don't do this if we have a really large section after the | |
9511 | stubs, as adding more stubs increases the chance that | |
9512 | branches may not reach into the stub section. */ | |
9513 | if (!stubs_always_before_branch && !big_sec) | |
9514 | { | |
9515 | total = 0; | |
9516 | while (prev != NULL | |
9517 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9518 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9519 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9520 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9521 | { | |
9522 | tail = prev; | |
9523 | prev = PREV_SEC (tail); | |
9524 | htab->stub_group[tail->id].link_sec = curr; | |
9525 | } | |
9526 | } | |
9527 | tail = prev; | |
721956f4 AM |
9528 | } |
9529 | } | |
734b6cf9 AM |
9530 | while (list-- != htab->input_list); |
9531 | free (htab->input_list); | |
721956f4 AM |
9532 | #undef PREV_SEC |
9533 | } | |
9534 | ||
721956f4 AM |
9535 | /* Determine and set the size of the stub section for a final link. |
9536 | ||
9537 | The basic idea here is to examine all the relocations looking for | |
9538 | PC-relative calls to a target that is unreachable with a "bl" | |
9539 | instruction. */ | |
9540 | ||
b34976b6 | 9541 | bfd_boolean |
4ce794b7 | 9542 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9543 | struct bfd_link_info *info, |
9544 | bfd_signed_vma group_size, | |
9545 | asection *(*add_stub_section) (const char *, asection *), | |
9546 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9547 | { |
9548 | bfd_size_type stub_group_size; | |
b34976b6 | 9549 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9550 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9551 | ||
9552 | /* Stash our params away. */ | |
721956f4 AM |
9553 | htab->add_stub_section = add_stub_section; |
9554 | htab->layout_sections_again = layout_sections_again; | |
9555 | stubs_always_before_branch = group_size < 0; | |
9556 | if (group_size < 0) | |
9557 | stub_group_size = -group_size; | |
9558 | else | |
9559 | stub_group_size = group_size; | |
721956f4 AM |
9560 | |
9561 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9562 | ||
721956f4 AM |
9563 | while (1) |
9564 | { | |
9565 | bfd *input_bfd; | |
9566 | unsigned int bfd_indx; | |
9567 | asection *stub_sec; | |
721956f4 AM |
9568 | |
9569 | htab->stub_iteration += 1; | |
721956f4 AM |
9570 | |
9571 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9572 | input_bfd != NULL; | |
9573 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9574 | { | |
9575 | Elf_Internal_Shdr *symtab_hdr; | |
9576 | asection *section; | |
6cdc0ccc | 9577 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9578 | |
0c8d6e5c | 9579 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
9580 | continue; |
9581 | ||
721956f4 | 9582 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 9583 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
9584 | if (symtab_hdr->sh_info == 0) |
9585 | continue; | |
9586 | ||
721956f4 AM |
9587 | /* Walk over each section attached to the input bfd. */ |
9588 | for (section = input_bfd->sections; | |
9589 | section != NULL; | |
9590 | section = section->next) | |
9591 | { | |
721956f4 | 9592 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9593 | |
9594 | /* If there aren't any relocs, then there's nothing more | |
9595 | to do. */ | |
9596 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9597 | || (section->flags & SEC_ALLOC) == 0 |
9598 | || (section->flags & SEC_LOAD) == 0 | |
9599 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9600 | || section->reloc_count == 0) |
9601 | continue; | |
9602 | ||
9603 | /* If this section is a link-once section that will be | |
9604 | discarded, then don't create any stubs. */ | |
9605 | if (section->output_section == NULL | |
9606 | || section->output_section->owner != output_bfd) | |
9607 | continue; | |
9608 | ||
1e2f5b6e AM |
9609 | /* Get the relocs. */ |
9610 | internal_relocs | |
4ce794b7 | 9611 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9612 | info->keep_memory); |
721956f4 | 9613 | if (internal_relocs == NULL) |
1e2f5b6e | 9614 | goto error_ret_free_local; |
721956f4 AM |
9615 | |
9616 | /* Now examine each relocation. */ | |
9617 | irela = internal_relocs; | |
9618 | irelaend = irela + section->reloc_count; | |
9619 | for (; irela < irelaend; irela++) | |
9620 | { | |
4ce794b7 AM |
9621 | enum elf_ppc64_reloc_type r_type; |
9622 | unsigned int r_indx; | |
721956f4 AM |
9623 | enum ppc_stub_type stub_type; |
9624 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9625 | asection *sym_sec, *code_sec; |
721956f4 AM |
9626 | bfd_vma sym_value; |
9627 | bfd_vma destination; | |
8843416a | 9628 | bfd_boolean ok_dest; |
721956f4 | 9629 | struct ppc_link_hash_entry *hash; |
8387904d | 9630 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9631 | struct elf_link_hash_entry *h; |
9632 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9633 | char *stub_name; |
9634 | const asection *id_sec; | |
74f0fb50 | 9635 | struct _opd_sec_data *opd; |
721956f4 AM |
9636 | |
9637 | r_type = ELF64_R_TYPE (irela->r_info); | |
9638 | r_indx = ELF64_R_SYM (irela->r_info); | |
9639 | ||
4ce794b7 | 9640 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9641 | { |
9642 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9643 | goto error_ret_free_internal; |
721956f4 AM |
9644 | } |
9645 | ||
9646 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9647 | if (r_type != R_PPC64_REL24 |
9648 | && r_type != R_PPC64_REL14 | |
9649 | && r_type != R_PPC64_REL14_BRTAKEN | |
9650 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9651 | continue; |
9652 | ||
9653 | /* Now determine the call target, its name, value, | |
9654 | section. */ | |
411e1bfb AM |
9655 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9656 | r_indx, input_bfd)) | |
9657 | goto error_ret_free_internal; | |
9658 | hash = (struct ppc_link_hash_entry *) h; | |
9659 | ||
8843416a | 9660 | ok_dest = FALSE; |
8387904d | 9661 | fdh = NULL; |
7fe2b9a6 | 9662 | sym_value = 0; |
411e1bfb | 9663 | if (hash == NULL) |
721956f4 | 9664 | { |
411e1bfb | 9665 | sym_value = sym->st_value; |
8843416a | 9666 | ok_dest = TRUE; |
721956f4 | 9667 | } |
7fe2b9a6 AM |
9668 | else if (hash->elf.root.type == bfd_link_hash_defined |
9669 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9670 | { | |
9671 | sym_value = hash->elf.root.u.def.value; | |
9672 | if (sym_sec->output_section != NULL) | |
9673 | ok_dest = TRUE; | |
9674 | } | |
9675 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9676 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9677 | { |
99877b66 | 9678 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9679 | use the func descriptor sym instead if it is |
9680 | defined. */ | |
ceb1f1ef | 9681 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9682 | && (fdh = get_fdh (hash, htab)) != NULL) |
9683 | { | |
8387904d AM |
9684 | if (fdh->elf.root.type == bfd_link_hash_defined |
9685 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9686 | { | |
9687 | sym_sec = fdh->elf.root.u.def.section; | |
9688 | sym_value = fdh->elf.root.u.def.value; | |
9689 | if (sym_sec->output_section != NULL) | |
9690 | ok_dest = TRUE; | |
9691 | } | |
99877b66 AM |
9692 | else |
9693 | fdh = NULL; | |
8387904d | 9694 | } |
7fe2b9a6 AM |
9695 | } |
9696 | else | |
9697 | { | |
9698 | bfd_set_error (bfd_error_bad_value); | |
9699 | goto error_ret_free_internal; | |
721956f4 AM |
9700 | } |
9701 | ||
8843416a AM |
9702 | destination = 0; |
9703 | if (ok_dest) | |
9704 | { | |
9705 | sym_value += irela->r_addend; | |
9706 | destination = (sym_value | |
9707 | + sym_sec->output_offset | |
9708 | + sym_sec->output_section->vma); | |
9709 | } | |
9710 | ||
8387904d | 9711 | code_sec = sym_sec; |
74f0fb50 AM |
9712 | opd = get_opd_info (sym_sec); |
9713 | if (opd != NULL) | |
8387904d AM |
9714 | { |
9715 | bfd_vma dest; | |
9716 | ||
74f0fb50 | 9717 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 9718 | { |
74f0fb50 | 9719 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
9720 | if (adjust == -1) |
9721 | continue; | |
9722 | sym_value += adjust; | |
9723 | } | |
9724 | dest = opd_entry_value (sym_sec, sym_value, | |
9725 | &code_sec, &sym_value); | |
9726 | if (dest != (bfd_vma) -1) | |
9727 | { | |
9728 | destination = dest; | |
9729 | if (fdh != NULL) | |
9730 | { | |
9731 | /* Fixup old ABI sym to point at code | |
9732 | entry. */ | |
99877b66 | 9733 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9734 | hash->elf.root.u.def.section = code_sec; |
9735 | hash->elf.root.u.def.value = sym_value; | |
9736 | } | |
9737 | } | |
9738 | } | |
9739 | ||
721956f4 AM |
9740 | /* Determine what (if any) linker stub is needed. */ |
9741 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9742 | destination); | |
ad8e1ba5 AM |
9743 | |
9744 | if (stub_type != ppc_stub_plt_call) | |
9745 | { | |
9746 | /* Check whether we need a TOC adjusting stub. | |
9747 | Since the linker pastes together pieces from | |
9748 | different object files when creating the | |
9749 | _init and _fini functions, it may be that a | |
9750 | call to what looks like a local sym is in | |
9751 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9752 | if (code_sec != NULL |
9753 | && code_sec->output_section != NULL | |
9754 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9755 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9756 | && (code_sec->has_toc_reloc |
9757 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9758 | stub_type = ppc_stub_long_branch_r2off; |
9759 | } | |
9760 | ||
721956f4 AM |
9761 | if (stub_type == ppc_stub_none) |
9762 | continue; | |
9763 | ||
411e1bfb AM |
9764 | /* __tls_get_addr calls might be eliminated. */ |
9765 | if (stub_type != ppc_stub_plt_call | |
9766 | && hash != NULL | |
8387904d AM |
9767 | && (hash == htab->tls_get_addr |
9768 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9769 | && section->has_tls_reloc |
9770 | && irela != internal_relocs) | |
9771 | { | |
9772 | /* Get tls info. */ | |
e7b938ca | 9773 | char *tls_mask; |
411e1bfb | 9774 | |
3a71aa26 | 9775 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
9776 | irela - 1, input_bfd)) |
9777 | goto error_ret_free_internal; | |
e7b938ca | 9778 | if (*tls_mask != 0) |
411e1bfb AM |
9779 | continue; |
9780 | } | |
9781 | ||
721956f4 AM |
9782 | /* Support for grouping stub sections. */ |
9783 | id_sec = htab->stub_group[section->id].link_sec; | |
9784 | ||
9785 | /* Get the name of this stub. */ | |
9786 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9787 | if (!stub_name) | |
9788 | goto error_ret_free_internal; | |
9789 | ||
9790 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9791 | stub_name, FALSE, FALSE); |
721956f4 AM |
9792 | if (stub_entry != NULL) |
9793 | { | |
9794 | /* The proper stub has already been created. */ | |
9795 | free (stub_name); | |
9796 | continue; | |
9797 | } | |
9798 | ||
9799 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9800 | if (stub_entry == NULL) | |
9801 | { | |
9802 | free (stub_name); | |
6cdc0ccc AM |
9803 | error_ret_free_internal: |
9804 | if (elf_section_data (section)->relocs == NULL) | |
9805 | free (internal_relocs); | |
9806 | error_ret_free_local: | |
9807 | if (local_syms != NULL | |
9808 | && (symtab_hdr->contents | |
9809 | != (unsigned char *) local_syms)) | |
9810 | free (local_syms); | |
b34976b6 | 9811 | return FALSE; |
721956f4 AM |
9812 | } |
9813 | ||
ad8e1ba5 | 9814 | stub_entry->stub_type = stub_type; |
721956f4 | 9815 | stub_entry->target_value = sym_value; |
8387904d | 9816 | stub_entry->target_section = code_sec; |
721956f4 | 9817 | stub_entry->h = hash; |
411e1bfb | 9818 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9819 | |
9820 | if (stub_entry->h != NULL) | |
9821 | htab->stub_globals += 1; | |
721956f4 AM |
9822 | } |
9823 | ||
9824 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9825 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9826 | free (internal_relocs); |
721956f4 | 9827 | } |
6cdc0ccc AM |
9828 | |
9829 | if (local_syms != NULL | |
9830 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9831 | { | |
9832 | if (!info->keep_memory) | |
9833 | free (local_syms); | |
9834 | else | |
9835 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9836 | } | |
721956f4 AM |
9837 | } |
9838 | ||
5c3dead3 | 9839 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9840 | stub sections. */ |
9841 | for (stub_sec = htab->stub_bfd->sections; | |
9842 | stub_sec != NULL; | |
9843 | stub_sec = stub_sec->next) | |
e717da7e | 9844 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9845 | { |
5c3dead3 | 9846 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9847 | stub_sec->size = 0; |
9848 | stub_sec->reloc_count = 0; | |
84f5d08e | 9849 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9850 | } |
eea6121a AM |
9851 | |
9852 | htab->brlt->size = 0; | |
84f5d08e AM |
9853 | htab->brlt->reloc_count = 0; |
9854 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9855 | if (htab->relbrlt != NULL) |
eea6121a | 9856 | htab->relbrlt->size = 0; |
721956f4 | 9857 | |
63bc6f6c | 9858 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9859 | |
176a0d42 AM |
9860 | if (info->emitrelocations |
9861 | && htab->glink != NULL && htab->glink->size != 0) | |
9862 | { | |
9863 | htab->glink->reloc_count = 1; | |
9864 | htab->glink->flags |= SEC_RELOC; | |
9865 | } | |
9866 | ||
5c3dead3 AM |
9867 | for (stub_sec = htab->stub_bfd->sections; |
9868 | stub_sec != NULL; | |
9869 | stub_sec = stub_sec->next) | |
9870 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9871 | && stub_sec->rawsize != stub_sec->size) | |
9872 | break; | |
9873 | ||
9874 | /* Exit from this loop when no stubs have been added, and no stubs | |
9875 | have changed size. */ | |
9876 | if (stub_sec == NULL) | |
9877 | break; | |
9878 | ||
721956f4 AM |
9879 | /* Ask the linker to do its stuff. */ |
9880 | (*htab->layout_sections_again) (); | |
9881 | } | |
9882 | ||
c456f082 | 9883 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9884 | section is empty, but it's too late. If we strip sections here, |
9885 | the dynamic symbol table is corrupted since the section symbol | |
9886 | for the stripped section isn't written. */ | |
721956f4 | 9887 | |
b34976b6 | 9888 | return TRUE; |
721956f4 AM |
9889 | } |
9890 | ||
9891 | /* Called after we have determined section placement. If sections | |
805fc799 | 9892 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9893 | |
805fc799 | 9894 | bfd_vma |
4ce794b7 | 9895 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9896 | { |
805fc799 AM |
9897 | asection *s; |
9898 | bfd_vma TOCstart; | |
721956f4 | 9899 | |
805fc799 AM |
9900 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9901 | order. The TOC starts where the first of these sections starts. */ | |
9902 | s = bfd_get_section_by_name (obfd, ".got"); | |
9903 | if (s == NULL) | |
9904 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9905 | if (s == NULL) | |
9906 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9907 | if (s == NULL) | |
9908 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9909 | if (s == NULL) | |
9910 | { | |
9911 | /* This may happen for | |
9912 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9913 | .toc directive | |
9914 | o bad linker script | |
9915 | o --gc-sections and empty TOC sections | |
9916 | ||
9917 | FIXME: Warn user? */ | |
9918 | ||
9919 | /* Look for a likely section. We probably won't even be | |
9920 | using TOCstart. */ | |
9921 | for (s = obfd->sections; s != NULL; s = s->next) | |
9922 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9923 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9924 | break; | |
721956f4 | 9925 | if (s == NULL) |
805fc799 AM |
9926 | for (s = obfd->sections; s != NULL; s = s->next) |
9927 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9928 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9929 | break; | |
721956f4 | 9930 | if (s == NULL) |
805fc799 AM |
9931 | for (s = obfd->sections; s != NULL; s = s->next) |
9932 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9933 | break; | |
721956f4 | 9934 | if (s == NULL) |
805fc799 AM |
9935 | for (s = obfd->sections; s != NULL; s = s->next) |
9936 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9937 | break; | |
9938 | } | |
721956f4 | 9939 | |
805fc799 AM |
9940 | TOCstart = 0; |
9941 | if (s != NULL) | |
9942 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9943 | |
805fc799 | 9944 | return TOCstart; |
721956f4 AM |
9945 | } |
9946 | ||
9947 | /* Build all the stubs associated with the current output file. | |
9948 | The stubs are kept in a hash table attached to the main linker | |
9949 | hash table. This function is called via gldelf64ppc_finish. */ | |
9950 | ||
b34976b6 | 9951 | bfd_boolean |
4ce794b7 AM |
9952 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9953 | struct bfd_link_info *info, | |
9954 | char **stats) | |
5d1634d7 AM |
9955 | { |
9956 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9957 | asection *stub_sec; |
5d1634d7 | 9958 | bfd_byte *p; |
e717da7e | 9959 | int stub_sec_count = 0; |
5d1634d7 | 9960 | |
ad8e1ba5 | 9961 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9962 | |
9963 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9964 | for (stub_sec = htab->stub_bfd->sections; |
9965 | stub_sec != NULL; | |
9966 | stub_sec = stub_sec->next) | |
eea6121a AM |
9967 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9968 | && stub_sec->size != 0) | |
e717da7e | 9969 | { |
eea6121a AM |
9970 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9971 | if (stub_sec->contents == NULL) | |
9972 | return FALSE; | |
9973 | /* We want to check that built size is the same as calculated | |
9974 | size. rawsize is a convenient location to use. */ | |
9975 | stub_sec->rawsize = stub_sec->size; | |
9976 | stub_sec->size = 0; | |
e717da7e | 9977 | } |
5d1634d7 | 9978 | |
23eb7e01 | 9979 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9980 | { |
9f951329 | 9981 | unsigned int indx; |
ad8e1ba5 | 9982 | bfd_vma plt0; |
9f951329 | 9983 | |
721956f4 | 9984 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9985 | if (htab->emit_stub_syms) |
9986 | { | |
9987 | struct elf_link_hash_entry *h; | |
468392fb AM |
9988 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
9989 | TRUE, FALSE, FALSE); | |
97b639ba AM |
9990 | if (h == NULL) |
9991 | return FALSE; | |
9992 | if (h->root.type == bfd_link_hash_new) | |
9993 | { | |
9994 | h->root.type = bfd_link_hash_defined; | |
9995 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9996 | h->root.u.def.value = 8; |
f5385ebf AM |
9997 | h->ref_regular = 1; |
9998 | h->def_regular = 1; | |
9999 | h->ref_regular_nonweak = 1; | |
10000 | h->forced_local = 1; | |
10001 | h->non_elf = 0; | |
97b639ba AM |
10002 | } |
10003 | } | |
176a0d42 AM |
10004 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
10005 | if (info->emitrelocations) | |
10006 | { | |
10007 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
10008 | if (r == NULL) | |
10009 | return FALSE; | |
10010 | r->r_offset = (htab->glink->output_offset | |
10011 | + htab->glink->output_section->vma); | |
10012 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
10013 | r->r_addend = plt0; | |
10014 | } | |
4ce794b7 | 10015 | p = htab->glink->contents; |
176a0d42 | 10016 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
10017 | bfd_put_64 (htab->glink->owner, plt0, p); |
10018 | p += 8; | |
10019 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 10020 | p += 4; |
ee4bf8d2 | 10021 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 10022 | p += 4; |
ee4bf8d2 | 10023 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 10024 | p += 4; |
ee4bf8d2 | 10025 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 10026 | p += 4; |
ee4bf8d2 | 10027 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 10028 | p += 4; |
ee4bf8d2 | 10029 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 10030 | p += 4; |
ee4bf8d2 | 10031 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 10032 | p += 4; |
4ce794b7 | 10033 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 10034 | p += 4; |
4ce794b7 | 10035 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 10036 | p += 4; |
4ce794b7 | 10037 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 10038 | p += 4; |
4ce794b7 | 10039 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 10040 | p += 4; |
ee4bf8d2 AM |
10041 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
10042 | { | |
10043 | bfd_put_32 (htab->glink->owner, NOP, p); | |
10044 | p += 4; | |
10045 | } | |
ad8e1ba5 | 10046 | |
9f951329 AM |
10047 | /* Build the .glink lazy link call stubs. */ |
10048 | indx = 0; | |
eea6121a | 10049 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
10050 | { |
10051 | if (indx < 0x8000) | |
10052 | { | |
4ce794b7 | 10053 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
10054 | p += 4; |
10055 | } | |
10056 | else | |
10057 | { | |
4ce794b7 | 10058 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 10059 | p += 4; |
4ce794b7 | 10060 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
10061 | p += 4; |
10062 | } | |
4ce794b7 | 10063 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 10064 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 10065 | indx++; |
9f951329 AM |
10066 | p += 4; |
10067 | } | |
eea6121a | 10068 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 10069 | } |
5d1634d7 | 10070 | |
eea6121a | 10071 | if (htab->brlt->size != 0) |
721956f4 | 10072 | { |
4ce794b7 | 10073 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 10074 | htab->brlt->size); |
4ce794b7 | 10075 | if (htab->brlt->contents == NULL) |
b34976b6 | 10076 | return FALSE; |
721956f4 | 10077 | } |
ee75fd95 | 10078 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
10079 | { |
10080 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 10081 | htab->relbrlt->size); |
63bc6f6c AM |
10082 | if (htab->relbrlt->contents == NULL) |
10083 | return FALSE; | |
10084 | } | |
5d1634d7 | 10085 | |
721956f4 AM |
10086 | /* Build the stubs as directed by the stub hash table. */ |
10087 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 10088 | |
aa8a7074 AM |
10089 | if (htab->relbrlt != NULL) |
10090 | htab->relbrlt->reloc_count = 0; | |
10091 | ||
721956f4 AM |
10092 | for (stub_sec = htab->stub_bfd->sections; |
10093 | stub_sec != NULL; | |
10094 | stub_sec = stub_sec->next) | |
e717da7e AM |
10095 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
10096 | { | |
10097 | stub_sec_count += 1; | |
eea6121a | 10098 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
10099 | break; |
10100 | } | |
5d1634d7 | 10101 | |
721956f4 | 10102 | if (stub_sec != NULL |
eea6121a | 10103 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 10104 | { |
b34976b6 | 10105 | htab->stub_error = TRUE; |
721956f4 | 10106 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 10107 | } |
721956f4 | 10108 | |
d2a300cf AM |
10109 | if (htab->stub_error) |
10110 | return FALSE; | |
10111 | ||
10112 | if (stats != NULL) | |
10113 | { | |
10114 | *stats = bfd_malloc (500); | |
10115 | if (*stats == NULL) | |
10116 | return FALSE; | |
10117 | ||
ee75fd95 | 10118 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
10119 | " branch %lu\n" |
10120 | " toc adjust %lu\n" | |
10121 | " long branch %lu\n" | |
10122 | " long toc adj %lu\n" | |
10123 | " plt call %lu"), | |
e717da7e | 10124 | stub_sec_count, |
ee75fd95 | 10125 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
10126 | htab->stub_count[ppc_stub_long_branch - 1], |
10127 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
10128 | htab->stub_count[ppc_stub_plt_branch - 1], | |
10129 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
10130 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
10131 | } |
10132 | return TRUE; | |
5bd4f169 AM |
10133 | } |
10134 | ||
99877b66 AM |
10135 | /* This function undoes the changes made by add_symbol_adjust. */ |
10136 | ||
10137 | static bfd_boolean | |
10138 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10139 | { | |
10140 | struct ppc_link_hash_entry *eh; | |
10141 | ||
10142 | if (h->root.type == bfd_link_hash_indirect) | |
10143 | return TRUE; | |
10144 | ||
10145 | if (h->root.type == bfd_link_hash_warning) | |
10146 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10147 | ||
10148 | eh = (struct ppc_link_hash_entry *) h; | |
10149 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
10150 | return TRUE; | |
10151 | ||
10152 | eh->elf.root.type = bfd_link_hash_undefined; | |
10153 | return TRUE; | |
10154 | } | |
10155 | ||
10156 | void | |
10157 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
10158 | { | |
10159 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10160 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
10161 | } | |
10162 | ||
60124e18 AM |
10163 | /* What to do when ld finds relocations against symbols defined in |
10164 | discarded sections. */ | |
10165 | ||
10166 | static unsigned int | |
10167 | ppc64_elf_action_discarded (asection *sec) | |
10168 | { | |
10169 | if (strcmp (".opd", sec->name) == 0) | |
10170 | return 0; | |
10171 | ||
10172 | if (strcmp (".toc", sec->name) == 0) | |
10173 | return 0; | |
10174 | ||
bce50a28 JJ |
10175 | if (strcmp (".toc1", sec->name) == 0) |
10176 | return 0; | |
10177 | ||
60124e18 AM |
10178 | return _bfd_elf_default_action_discarded (sec); |
10179 | } | |
10180 | ||
5bd4f169 AM |
10181 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
10182 | to handle the relocations for a section. | |
10183 | ||
10184 | The relocs are always passed as Rela structures; if the section | |
10185 | actually uses Rel structures, the r_addend field will always be | |
10186 | zero. | |
10187 | ||
10188 | This function is responsible for adjust the section contents as | |
10189 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 10190 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
10191 | necessary. |
10192 | ||
10193 | This function does not have to worry about setting the reloc | |
10194 | address or the reloc symbol index. | |
10195 | ||
10196 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
10197 | ||
10198 | LOCAL_SECTIONS is an array giving the section in the input file | |
10199 | corresponding to the st_shndx field of each local symbol. | |
10200 | ||
10201 | The global hash table entry for the global symbols can be found | |
10202 | via elf_sym_hashes (input_bfd). | |
10203 | ||
1049f94e | 10204 | When generating relocatable output, this function must handle |
5bd4f169 AM |
10205 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
10206 | going to be the section symbol corresponding to the output | |
10207 | section, which means that the addend must be adjusted | |
10208 | accordingly. */ | |
10209 | ||
b34976b6 | 10210 | static bfd_boolean |
4ce794b7 AM |
10211 | ppc64_elf_relocate_section (bfd *output_bfd, |
10212 | struct bfd_link_info *info, | |
10213 | bfd *input_bfd, | |
10214 | asection *input_section, | |
10215 | bfd_byte *contents, | |
10216 | Elf_Internal_Rela *relocs, | |
10217 | Elf_Internal_Sym *local_syms, | |
10218 | asection **local_sections) | |
5bd4f169 | 10219 | { |
65f38f15 | 10220 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
10221 | Elf_Internal_Shdr *symtab_hdr; |
10222 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
10223 | Elf_Internal_Rela *rel; |
10224 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
10225 | Elf_Internal_Rela outrel; |
10226 | bfd_byte *loc; | |
411e1bfb | 10227 | struct got_entry **local_got_ents; |
5bd4f169 | 10228 | bfd_vma TOCstart; |
b34976b6 AM |
10229 | bfd_boolean ret = TRUE; |
10230 | bfd_boolean is_opd; | |
96e0dda4 | 10231 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 10232 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 10233 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 10234 | |
65f38f15 | 10235 | /* Initialize howto table if needed. */ |
5bd4f169 | 10236 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
10237 | ppc_howto_init (); |
10238 | ||
65f38f15 | 10239 | htab = ppc_hash_table (info); |
ee75fd95 AM |
10240 | |
10241 | /* Don't relocate stub sections. */ | |
10242 | if (input_section->owner == htab->stub_bfd) | |
10243 | return TRUE; | |
10244 | ||
0c8d6e5c | 10245 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 10246 | |
411e1bfb | 10247 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 10248 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 10249 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 10250 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 10251 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 10252 | |
5bd4f169 AM |
10253 | rel = relocs; |
10254 | relend = relocs + input_section->reloc_count; | |
10255 | for (; rel < relend; rel++) | |
10256 | { | |
04c9666a | 10257 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 10258 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
10259 | bfd_reloc_status_type r; |
10260 | Elf_Internal_Sym *sym; | |
10261 | asection *sec; | |
039b3fef AM |
10262 | struct elf_link_hash_entry *h_elf; |
10263 | struct ppc_link_hash_entry *h; | |
10264 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 10265 | const char *sym_name; |
0d4792f7 | 10266 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 10267 | bfd_vma toc_addend; |
951fd09b | 10268 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 10269 | char sym_type; |
5bd4f169 | 10270 | bfd_vma relocation; |
b34976b6 AM |
10271 | bfd_boolean unresolved_reloc; |
10272 | bfd_boolean warned; | |
50bc7936 | 10273 | unsigned long insn, mask; |
721956f4 AM |
10274 | struct ppc_stub_hash_entry *stub_entry; |
10275 | bfd_vma max_br_offset; | |
10276 | bfd_vma from; | |
5bd4f169 | 10277 | |
4ce794b7 | 10278 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 10279 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
10280 | |
10281 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10282 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10283 | proper TOC base to use. */ | |
10284 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10285 | && rel != relocs | |
10286 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10287 | && is_opd) | |
10288 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10289 | ||
4ce794b7 AM |
10290 | sym = NULL; |
10291 | sec = NULL; | |
039b3fef | 10292 | h_elf = NULL; |
4ce794b7 | 10293 | sym_name = NULL; |
b34976b6 AM |
10294 | unresolved_reloc = FALSE; |
10295 | warned = FALSE; | |
4cc603a5 | 10296 | orig_addend = rel->r_addend; |
65f38f15 | 10297 | |
0b13192e | 10298 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10299 | { |
10300 | /* It's a local symbol. */ | |
74f0fb50 | 10301 | struct _opd_sec_data *opd; |
4025353c | 10302 | |
5bd4f169 AM |
10303 | sym = local_syms + r_symndx; |
10304 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10305 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10306 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10307 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
10308 | opd = get_opd_info (sec); |
10309 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 10310 | { |
74f0fb50 | 10311 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10312 | if (adjust == -1) |
10313 | relocation = 0; | |
10314 | else | |
4cc603a5 AM |
10315 | { |
10316 | /* If this is a relocation against the opd section sym | |
10317 | and we have edited .opd, adjust the reloc addend so | |
10318 | that ld -r and ld --emit-relocs output is correct. | |
10319 | If it is a reloc against some other .opd symbol, | |
10320 | then the symbol value will be adjusted later. */ | |
10321 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10322 | rel->r_addend += adjust; | |
10323 | else | |
10324 | relocation += adjust; | |
10325 | } | |
1e2f5b6e | 10326 | } |
5bd4f169 AM |
10327 | } |
10328 | else | |
10329 | { | |
b2a8e766 AM |
10330 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10331 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10332 | h_elf, sec, relocation, |
b2a8e766 | 10333 | unresolved_reloc, warned); |
039b3fef AM |
10334 | sym_name = h_elf->root.root.string; |
10335 | sym_type = h_elf->type; | |
5bd4f169 | 10336 | } |
039b3fef | 10337 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10338 | |
ab96bf03 AM |
10339 | if (sec != NULL && elf_discarded_section (sec)) |
10340 | { | |
10341 | /* For relocs against symbols from removed linkonce sections, | |
10342 | or sections discarded by a linker script, we just want the | |
10343 | section contents zeroed. Avoid any special processing. */ | |
10344 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10345 | contents + rel->r_offset); | |
10346 | rel->r_info = 0; | |
10347 | rel->r_addend = 0; | |
10348 | continue; | |
10349 | } | |
10350 | ||
10351 | if (info->relocatable) | |
10352 | continue; | |
10353 | ||
951fd09b AM |
10354 | /* TLS optimizations. Replace instruction sequences and relocs |
10355 | based on information we collected in tls_optimize. We edit | |
10356 | RELOCS so that --emit-relocs will output something sensible | |
10357 | for the final instruction stream. */ | |
10358 | tls_mask = 0; | |
10359 | tls_gd = 0; | |
0d4792f7 | 10360 | toc_symndx = 0; |
727fc41e AM |
10361 | if (h != NULL) |
10362 | tls_mask = h->tls_mask; | |
10363 | else if (local_got_ents != NULL) | |
411e1bfb | 10364 | { |
727fc41e AM |
10365 | char *lgot_masks; |
10366 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
10367 | tls_mask = lgot_masks[r_symndx]; | |
10368 | } | |
10369 | if (tls_mask == 0 | |
10370 | && (r_type == R_PPC64_TLS | |
10371 | || r_type == R_PPC64_TLSGD | |
10372 | || r_type == R_PPC64_TLSLD)) | |
10373 | { | |
10374 | /* Check for toc tls entries. */ | |
10375 | char *toc_tls; | |
0d4792f7 | 10376 | |
727fc41e AM |
10377 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10378 | &local_syms, rel, input_bfd)) | |
10379 | return FALSE; | |
0d4792f7 | 10380 | |
727fc41e AM |
10381 | if (toc_tls) |
10382 | tls_mask = *toc_tls; | |
0d4792f7 AM |
10383 | } |
10384 | ||
10385 | /* Check that tls relocs are used with tls syms, and non-tls | |
10386 | relocs are used with non-tls syms. */ | |
10387 | if (r_symndx != 0 | |
10388 | && r_type != R_PPC64_NONE | |
10389 | && (h == NULL | |
039b3fef AM |
10390 | || h->elf.root.type == bfd_link_hash_defined |
10391 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
10392 | && (IS_PPC64_TLS_RELOC (r_type) |
10393 | != (sym_type == STT_TLS | |
10394 | || (sym_type == STT_SECTION | |
10395 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 10396 | { |
727fc41e AM |
10397 | if (tls_mask != 0 |
10398 | && (r_type == R_PPC64_TLS | |
10399 | || r_type == R_PPC64_TLSGD | |
10400 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
10401 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
10402 | ; | |
10403 | else | |
10404 | (*_bfd_error_handler) | |
1d483afe | 10405 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
10406 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10407 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10408 | input_bfd, | |
10409 | input_section, | |
0d4792f7 AM |
10410 | (long) rel->r_offset, |
10411 | ppc64_elf_howto_table[r_type]->name, | |
10412 | sym_name); | |
411e1bfb AM |
10413 | } |
10414 | ||
10415 | /* Ensure reloc mapping code below stays sane. */ | |
10416 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10417 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10418 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10419 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10420 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10421 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10422 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10423 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10424 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10425 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10426 | abort (); | |
0d4792f7 | 10427 | |
411e1bfb AM |
10428 | switch (r_type) |
10429 | { | |
10430 | default: | |
411e1bfb AM |
10431 | break; |
10432 | ||
10433 | case R_PPC64_TOC16: | |
10434 | case R_PPC64_TOC16_LO: | |
10435 | case R_PPC64_TOC16_DS: | |
10436 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10437 | { |
10438 | /* Check for toc tls entries. */ | |
10439 | char *toc_tls; | |
951fd09b | 10440 | int retval; |
411e1bfb | 10441 | |
3a71aa26 AM |
10442 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
10443 | &local_syms, rel, input_bfd); | |
951fd09b | 10444 | if (retval == 0) |
411e1bfb AM |
10445 | return FALSE; |
10446 | ||
10447 | if (toc_tls) | |
10448 | { | |
951fd09b | 10449 | tls_mask = *toc_tls; |
411e1bfb AM |
10450 | if (r_type == R_PPC64_TOC16_DS |
10451 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10452 | { |
10453 | if (tls_mask != 0 | |
10454 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10455 | goto toctprel; | |
10456 | } | |
411e1bfb | 10457 | else |
951fd09b AM |
10458 | { |
10459 | /* If we found a GD reloc pair, then we might be | |
10460 | doing a GD->IE transition. */ | |
10461 | if (retval == 2) | |
10462 | { | |
10463 | tls_gd = TLS_TPRELGD; | |
10464 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10465 | goto tls_ldgd_opt; |
951fd09b AM |
10466 | } |
10467 | else if (retval == 3) | |
10468 | { | |
10469 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10470 | goto tls_ldgd_opt; |
951fd09b AM |
10471 | } |
10472 | } | |
411e1bfb AM |
10473 | } |
10474 | } | |
10475 | break; | |
10476 | ||
10477 | case R_PPC64_GOT_TPREL16_DS: | |
10478 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10479 | if (tls_mask != 0 |
10480 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10481 | { |
81407a69 | 10482 | toctprel: |
4fe5ca5b | 10483 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10484 | insn &= 31 << 21; |
10485 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10486 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10487 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10488 | if (toc_symndx != 0) |
10489 | { | |
10490 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 10491 | rel->r_addend = toc_addend; |
0d4792f7 AM |
10492 | /* We changed the symbol. Start over in order to |
10493 | get h, sym, sec etc. right. */ | |
10494 | rel--; | |
10495 | continue; | |
10496 | } | |
10497 | else | |
10498 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10499 | } |
10500 | break; | |
10501 | ||
10502 | case R_PPC64_TLS: | |
951fd09b AM |
10503 | if (tls_mask != 0 |
10504 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10505 | { |
50bc7936 | 10506 | bfd_vma rtra; |
411e1bfb | 10507 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10508 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10509 | == ((31 << 26) | (13 << 11))) |
10510 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10511 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10512 | == ((31 << 26) | (13 << 16))) |
10513 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10514 | else | |
10515 | abort (); | |
10516 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10517 | /* add -> addi. */ | |
10518 | insn = 14 << 26; | |
10519 | else if ((insn & (31 << 1)) == 23 << 1 | |
10520 | && ((insn & (31 << 6)) < 14 << 6 | |
10521 | || ((insn & (31 << 6)) >= 16 << 6 | |
10522 | && (insn & (31 << 6)) < 24 << 6))) | |
10523 | /* load and store indexed -> dform. */ | |
10524 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10525 | else if ((insn & (31 << 1)) == 21 << 1 | |
10526 | && (insn & (0x1a << 6)) == 0) | |
10527 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10528 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10529 | | ((insn >> 6) & 1)); | |
10530 | else if ((insn & (31 << 1)) == 21 << 1 | |
10531 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10532 | /* lwax -> lwa. */ | |
10533 | insn = (58 << 26) | 2; | |
10534 | else | |
10535 | abort (); | |
10536 | insn |= rtra; | |
10537 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10538 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10539 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10540 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10541 | r_type = R_PPC64_TPREL16_LO; |
10542 | if (toc_symndx != 0) | |
10543 | { | |
10544 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 10545 | rel->r_addend = toc_addend; |
0d4792f7 AM |
10546 | /* We changed the symbol. Start over in order to |
10547 | get h, sym, sec etc. right. */ | |
10548 | rel--; | |
10549 | continue; | |
10550 | } | |
10551 | else | |
10552 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10553 | } |
10554 | break; | |
10555 | ||
411e1bfb AM |
10556 | case R_PPC64_GOT_TLSGD16_HI: |
10557 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10558 | tls_gd = TLS_TPRELGD; |
10559 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10560 | goto tls_gdld_hi; | |
10561 | break; | |
10562 | ||
411e1bfb AM |
10563 | case R_PPC64_GOT_TLSLD16_HI: |
10564 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10565 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10566 | { |
951fd09b AM |
10567 | tls_gdld_hi: |
10568 | if ((tls_mask & tls_gd) != 0) | |
10569 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10570 | + R_PPC64_GOT_TPREL16_DS); | |
10571 | else | |
411e1bfb | 10572 | { |
951fd09b | 10573 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10574 | rel->r_offset -= d_offset; |
951fd09b | 10575 | r_type = R_PPC64_NONE; |
411e1bfb | 10576 | } |
951fd09b | 10577 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10578 | } |
10579 | break; | |
10580 | ||
951fd09b AM |
10581 | case R_PPC64_GOT_TLSGD16: |
10582 | case R_PPC64_GOT_TLSGD16_LO: | |
10583 | tls_gd = TLS_TPRELGD; | |
10584 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10585 | goto tls_ldgd_opt; |
951fd09b | 10586 | break; |
411e1bfb | 10587 | |
951fd09b AM |
10588 | case R_PPC64_GOT_TLSLD16: |
10589 | case R_PPC64_GOT_TLSLD16_LO: | |
10590 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10591 | { | |
3a71aa26 | 10592 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
10593 | bfd_vma offset; |
10594 | ||
10595 | tls_ldgd_opt: | |
727fc41e AM |
10596 | offset = (bfd_vma) -1; |
10597 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
10598 | __tls_get_addr calls, we must trust that the call | |
10599 | stays with its arg setup insns, ie. that the next | |
10600 | reloc is the __tls_get_addr call associated with | |
10601 | the current reloc. Edit both insns. */ | |
10602 | if (input_section->has_tls_get_addr_call | |
10603 | && rel + 1 < relend | |
10604 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
10605 | htab->tls_get_addr, | |
10606 | htab->tls_get_addr_fd)) | |
10607 | offset = rel[1].r_offset; | |
102890f0 | 10608 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 10609 | { |
102890f0 | 10610 | /* IE */ |
3a71aa26 AM |
10611 | insn1 = bfd_get_32 (output_bfd, |
10612 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
10613 | insn1 &= (1 << 26) - (1 << 2); |
10614 | insn1 |= 58 << 26; /* ld */ | |
10615 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e AM |
10616 | if (offset != (bfd_vma) -1) |
10617 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10618 | R_PPC64_NONE); | |
102890f0 AM |
10619 | if ((tls_mask & TLS_EXPLICIT) == 0) |
10620 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10621 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 10622 | else |
102890f0 AM |
10623 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
10624 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10625 | } | |
10626 | else | |
10627 | { | |
10628 | /* LE */ | |
10629 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10630 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10631 | if (tls_gd == 0) | |
951fd09b | 10632 | { |
102890f0 | 10633 | /* Was an LD reloc. */ |
1d483afe AM |
10634 | if (toc_symndx) |
10635 | sec = local_sections[toc_symndx]; | |
10636 | for (r_symndx = 0; | |
10637 | r_symndx < symtab_hdr->sh_info; | |
10638 | r_symndx++) | |
10639 | if (local_sections[r_symndx] == sec) | |
10640 | break; | |
10641 | if (r_symndx >= symtab_hdr->sh_info) | |
10642 | r_symndx = 0; | |
102890f0 | 10643 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
10644 | if (r_symndx != 0) |
10645 | rel->r_addend -= (local_syms[r_symndx].st_value | |
10646 | + sec->output_offset | |
10647 | + sec->output_section->vma); | |
951fd09b | 10648 | } |
102890f0 | 10649 | else if (toc_symndx != 0) |
3a71aa26 AM |
10650 | { |
10651 | r_symndx = toc_symndx; | |
10652 | rel->r_addend = toc_addend; | |
10653 | } | |
102890f0 AM |
10654 | r_type = R_PPC64_TPREL16_HA; |
10655 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
10656 | if (offset != (bfd_vma) -1) |
10657 | { | |
10658 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10659 | R_PPC64_TPREL16_LO); | |
10660 | rel[1].r_offset = offset + d_offset; | |
10661 | rel[1].r_addend = rel->r_addend; | |
10662 | } | |
102890f0 | 10663 | } |
3a71aa26 AM |
10664 | bfd_put_32 (output_bfd, insn1, |
10665 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
10666 | if (offset != (bfd_vma) -1) |
10667 | { | |
10668 | insn3 = bfd_get_32 (output_bfd, | |
10669 | contents + offset + 4); | |
10670 | if (insn3 == NOP | |
10671 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10672 | { | |
10673 | rel[1].r_offset += 4; | |
10674 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
10675 | insn2 = NOP; | |
10676 | } | |
10677 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10678 | } | |
10679 | if ((tls_mask & tls_gd) == 0 | |
10680 | && (tls_gd == 0 || toc_symndx != 0)) | |
10681 | { | |
10682 | /* We changed the symbol. Start over in order | |
10683 | to get h, sym, sec etc. right. */ | |
10684 | rel--; | |
10685 | continue; | |
10686 | } | |
10687 | } | |
10688 | break; | |
10689 | ||
10690 | case R_PPC64_TLSGD: | |
10691 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10692 | { | |
10693 | unsigned int insn2, insn3; | |
10694 | bfd_vma offset = rel->r_offset; | |
10695 | ||
10696 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10697 | { | |
10698 | /* IE */ | |
10699 | r_type = R_PPC64_NONE; | |
10700 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10701 | } | |
10702 | else | |
10703 | { | |
10704 | /* LE */ | |
10705 | if (toc_symndx != 0) | |
10706 | { | |
10707 | r_symndx = toc_symndx; | |
10708 | rel->r_addend = toc_addend; | |
10709 | } | |
10710 | r_type = R_PPC64_TPREL16_LO; | |
10711 | rel->r_offset = offset + d_offset; | |
10712 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10713 | } | |
10714 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10715 | /* Zap the reloc on the _tls_get_addr call too. */ | |
10716 | BFD_ASSERT (offset == rel[1].r_offset); | |
10717 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10718 | R_PPC64_NONE); | |
3a71aa26 AM |
10719 | insn3 = bfd_get_32 (output_bfd, |
10720 | contents + offset + 4); | |
102890f0 AM |
10721 | if (insn3 == NOP |
10722 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10723 | { | |
727fc41e | 10724 | rel->r_offset += 4; |
3a71aa26 AM |
10725 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
10726 | insn2 = NOP; | |
102890f0 | 10727 | } |
102890f0 | 10728 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 10729 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 10730 | { |
102890f0 AM |
10731 | rel--; |
10732 | continue; | |
411e1bfb | 10733 | } |
411e1bfb | 10734 | } |
411e1bfb AM |
10735 | break; |
10736 | ||
727fc41e AM |
10737 | case R_PPC64_TLSLD: |
10738 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10739 | { | |
10740 | unsigned int insn2, insn3; | |
10741 | bfd_vma offset = rel->r_offset; | |
10742 | ||
10743 | if (toc_symndx) | |
10744 | sec = local_sections[toc_symndx]; | |
10745 | for (r_symndx = 0; | |
10746 | r_symndx < symtab_hdr->sh_info; | |
10747 | r_symndx++) | |
10748 | if (local_sections[r_symndx] == sec) | |
10749 | break; | |
10750 | if (r_symndx >= symtab_hdr->sh_info) | |
10751 | r_symndx = 0; | |
10752 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
10753 | if (r_symndx != 0) | |
10754 | rel->r_addend -= (local_syms[r_symndx].st_value | |
10755 | + sec->output_offset | |
10756 | + sec->output_section->vma); | |
10757 | ||
10758 | r_type = R_PPC64_TPREL16_LO; | |
10759 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10760 | rel->r_offset = offset + d_offset; | |
10761 | /* Zap the reloc on the _tls_get_addr call too. */ | |
10762 | BFD_ASSERT (offset == rel[1].r_offset); | |
10763 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10764 | R_PPC64_NONE); | |
10765 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10766 | insn3 = bfd_get_32 (output_bfd, | |
10767 | contents + offset + 4); | |
10768 | if (insn3 == NOP | |
10769 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10770 | { | |
10771 | rel->r_offset += 4; | |
10772 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
10773 | insn2 = NOP; | |
10774 | } | |
10775 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10776 | rel--; | |
10777 | continue; | |
10778 | } | |
10779 | break; | |
10780 | ||
411e1bfb | 10781 | case R_PPC64_DTPMOD64: |
951fd09b AM |
10782 | if (rel + 1 < relend |
10783 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10784 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10785 | { |
951fd09b AM |
10786 | if ((tls_mask & TLS_GD) == 0) |
10787 | { | |
10788 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10789 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10790 | r_type = R_PPC64_TPREL64; | |
10791 | else | |
10792 | { | |
4ce794b7 | 10793 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10794 | r_type = R_PPC64_NONE; |
10795 | } | |
10796 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10797 | } | |
10798 | } | |
10799 | else | |
10800 | { | |
10801 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10802 | { |
4ce794b7 | 10803 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10804 | r_type = R_PPC64_NONE; |
951fd09b | 10805 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10806 | } |
411e1bfb AM |
10807 | } |
10808 | break; | |
10809 | ||
10810 | case R_PPC64_TPREL64: | |
951fd09b | 10811 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10812 | { |
10813 | r_type = R_PPC64_NONE; | |
10814 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10815 | } | |
10816 | break; | |
10817 | } | |
10818 | ||
10819 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10820 | insn = 0; |
b25116a9 AM |
10821 | max_br_offset = 1 << 25; |
10822 | addend = rel->r_addend; | |
65f38f15 | 10823 | switch (r_type) |
5bd4f169 AM |
10824 | { |
10825 | default: | |
65f38f15 | 10826 | break; |
5bd4f169 | 10827 | |
65f38f15 AM |
10828 | /* Branch taken prediction relocations. */ |
10829 | case R_PPC64_ADDR14_BRTAKEN: | |
10830 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10831 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10832 | /* Fall thru. */ | |
65f38f15 | 10833 | |
86c76c7b | 10834 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10835 | case R_PPC64_ADDR14_BRNTAKEN: |
10836 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10837 | insn |= bfd_get_32 (output_bfd, |
10838 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10839 | /* Fall thru. */ |
86c76c7b | 10840 | |
b25116a9 AM |
10841 | case R_PPC64_REL14: |
10842 | max_br_offset = 1 << 15; | |
10843 | /* Fall thru. */ | |
5bd4f169 | 10844 | |
65f38f15 | 10845 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10846 | /* Calls to functions with a different TOC, such as calls to |
10847 | shared objects, need to alter the TOC pointer. This is | |
10848 | done using a linkage stub. A REL24 branching to these | |
10849 | linkage stubs needs to be followed by a nop, as the nop | |
10850 | will be replaced with an instruction to restore the TOC | |
10851 | base pointer. */ | |
b25116a9 | 10852 | stub_entry = NULL; |
8387904d | 10853 | fdh = h; |
ad8e1ba5 | 10854 | if (((h != NULL |
039b3fef AM |
10855 | && (((fdh = h->oh) != NULL |
10856 | && fdh->elf.plt.plist != NULL) | |
10857 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10858 | || (sec != NULL |
ad8e1ba5 | 10859 | && sec->output_section != NULL |
b25116a9 | 10860 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10861 | && (htab->stub_group[sec->id].toc_off |
10862 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10863 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10864 | rel, htab)) != NULL |
10865 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10866 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10867 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10868 | { |
b25116a9 | 10869 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10870 | |
eea6121a | 10871 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10872 | { |
b25116a9 AM |
10873 | unsigned long nop; |
10874 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10875 | if (nop == NOP | |
10876 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10877 | { |
4ce794b7 | 10878 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10879 | contents + rel->r_offset + 4); |
b25116a9 | 10880 | can_plt_call = TRUE; |
41bd81ab | 10881 | } |
5bd4f169 | 10882 | } |
721956f4 AM |
10883 | |
10884 | if (!can_plt_call) | |
10885 | { | |
ad8e1ba5 AM |
10886 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10887 | { | |
10888 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10889 | and link, don't require a nop. However, don't |
10890 | allow tail calls in a shared library as they | |
10891 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10892 | unsigned long br; |
10893 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10894 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10895 | can_plt_call = TRUE; |
15b552e9 AM |
10896 | else |
10897 | stub_entry = NULL; | |
ad8e1ba5 | 10898 | } |
6ab189d5 | 10899 | else if (h != NULL |
039b3fef | 10900 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10901 | ".__libc_start_main") == 0) |
10902 | { | |
10903 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10904 | can_plt_call = TRUE; |
6ab189d5 | 10905 | } |
ad8e1ba5 AM |
10906 | else |
10907 | { | |
10908 | if (strcmp (input_section->output_section->name, | |
10909 | ".init") == 0 | |
10910 | || strcmp (input_section->output_section->name, | |
10911 | ".fini") == 0) | |
10912 | (*_bfd_error_handler) | |
d003868e | 10913 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10914 | "not supported using your crt files; " |
10915 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10916 | input_bfd, |
10917 | input_section, | |
ad8e1ba5 AM |
10918 | (long) rel->r_offset); |
10919 | else | |
10920 | (*_bfd_error_handler) | |
d003868e | 10921 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10922 | "does not allow automatic multiple TOCs; " |
10923 | "recompile with -mminimal-toc or " | |
10924 | "-fno-optimize-sibling-calls, " | |
10925 | "or make `%s' extern"), | |
d003868e AM |
10926 | input_bfd, |
10927 | input_section, | |
ad8e1ba5 AM |
10928 | (long) rel->r_offset, |
10929 | sym_name, | |
10930 | sym_name); | |
10931 | bfd_set_error (bfd_error_bad_value); | |
10932 | ret = FALSE; | |
10933 | } | |
721956f4 AM |
10934 | } |
10935 | ||
b25116a9 AM |
10936 | if (can_plt_call |
10937 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10938 | unresolved_reloc = FALSE; | |
10939 | } | |
10940 | ||
8387904d AM |
10941 | if (stub_entry == NULL |
10942 | && get_opd_info (sec) != NULL) | |
10943 | { | |
10944 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10945 | bfd_vma off = (relocation + addend |
10946 | - sec->output_section->vma | |
10947 | - sec->output_offset); | |
8387904d AM |
10948 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10949 | if (dest != (bfd_vma) -1) | |
10950 | { | |
10951 | relocation = dest; | |
10952 | addend = 0; | |
10953 | } | |
10954 | } | |
10955 | ||
b25116a9 AM |
10956 | /* If the branch is out of reach we ought to have a long |
10957 | branch stub. */ | |
10958 | from = (rel->r_offset | |
10959 | + input_section->output_offset | |
10960 | + input_section->output_section->vma); | |
10961 | ||
10962 | if (stub_entry == NULL | |
4cc603a5 | 10963 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10964 | >= 2 * max_br_offset) |
10965 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10966 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10967 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10968 | htab); | |
b25116a9 AM |
10969 | |
10970 | if (stub_entry != NULL) | |
10971 | { | |
10972 | /* Munge up the value and addend so that we call the stub | |
10973 | rather than the procedure directly. */ | |
10974 | relocation = (stub_entry->stub_offset | |
10975 | + stub_entry->stub_sec->output_offset | |
10976 | + stub_entry->stub_sec->output_section->vma); | |
10977 | addend = 0; | |
10978 | } | |
10979 | ||
10980 | if (insn != 0) | |
10981 | { | |
10982 | if (is_power4) | |
721956f4 | 10983 | { |
b25116a9 AM |
10984 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10985 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10986 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10987 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10988 | insn |= 0x02 << 21; | |
10989 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10990 | insn |= 0x08 << 21; | |
10991 | else | |
10992 | break; | |
10993 | } | |
10994 | else | |
10995 | { | |
10996 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10997 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10998 | insn ^= 0x01 << 21; |
721956f4 | 10999 | } |
b25116a9 AM |
11000 | |
11001 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 11002 | } |
e86ce104 | 11003 | |
06da1e8e AM |
11004 | /* NOP out calls to undefined weak functions. |
11005 | We can thus call a weak function without first | |
11006 | checking whether the function is defined. */ | |
b25116a9 | 11007 | else if (h != NULL |
039b3fef | 11008 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
11009 | && r_type == R_PPC64_REL24 |
11010 | && relocation == 0 | |
4cc603a5 | 11011 | && addend == 0) |
e86ce104 | 11012 | { |
06da1e8e AM |
11013 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
11014 | continue; | |
e86ce104 | 11015 | } |
65f38f15 AM |
11016 | break; |
11017 | } | |
5bd4f169 | 11018 | |
65f38f15 | 11019 | /* Set `addend'. */ |
411e1bfb | 11020 | tls_type = 0; |
65f38f15 AM |
11021 | switch (r_type) |
11022 | { | |
11023 | default: | |
11024 | (*_bfd_error_handler) | |
d003868e AM |
11025 | (_("%B: unknown relocation type %d for symbol %s"), |
11026 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 11027 | |
65f38f15 | 11028 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11029 | ret = FALSE; |
65f38f15 | 11030 | continue; |
5bd4f169 | 11031 | |
65f38f15 | 11032 | case R_PPC64_NONE: |
411e1bfb | 11033 | case R_PPC64_TLS: |
727fc41e AM |
11034 | case R_PPC64_TLSGD: |
11035 | case R_PPC64_TLSLD: | |
04c9666a AM |
11036 | case R_PPC64_GNU_VTINHERIT: |
11037 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 11038 | continue; |
5bd4f169 AM |
11039 | |
11040 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
11041 | address in the GOT as relocation value instead of the | |
411e1bfb | 11042 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 11043 | symbol and put the symbol value there. */ |
411e1bfb AM |
11044 | case R_PPC64_GOT_TLSGD16: |
11045 | case R_PPC64_GOT_TLSGD16_LO: | |
11046 | case R_PPC64_GOT_TLSGD16_HI: | |
11047 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 11048 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
11049 | goto dogot; |
11050 | ||
11051 | case R_PPC64_GOT_TLSLD16: | |
11052 | case R_PPC64_GOT_TLSLD16_LO: | |
11053 | case R_PPC64_GOT_TLSLD16_HI: | |
11054 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 11055 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
11056 | goto dogot; |
11057 | ||
11058 | case R_PPC64_GOT_TPREL16_DS: | |
11059 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11060 | case R_PPC64_GOT_TPREL16_HI: | |
11061 | case R_PPC64_GOT_TPREL16_HA: | |
11062 | tls_type = TLS_TLS | TLS_TPREL; | |
11063 | goto dogot; | |
11064 | ||
11065 | case R_PPC64_GOT_DTPREL16_DS: | |
11066 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11067 | case R_PPC64_GOT_DTPREL16_HI: | |
11068 | case R_PPC64_GOT_DTPREL16_HA: | |
11069 | tls_type = TLS_TLS | TLS_DTPREL; | |
11070 | goto dogot; | |
11071 | ||
65f38f15 AM |
11072 | case R_PPC64_GOT16: |
11073 | case R_PPC64_GOT16_LO: | |
11074 | case R_PPC64_GOT16_HI: | |
11075 | case R_PPC64_GOT16_HA: | |
11076 | case R_PPC64_GOT16_DS: | |
11077 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 11078 | dogot: |
5bd4f169 AM |
11079 | { |
11080 | /* Relocation is to the entry for this symbol in the global | |
11081 | offset table. */ | |
e717da7e | 11082 | asection *got; |
d881513a | 11083 | bfd_vma *offp; |
5bd4f169 | 11084 | bfd_vma off; |
d881513a | 11085 | unsigned long indx = 0; |
65f38f15 | 11086 | |
d881513a AM |
11087 | if (tls_type == (TLS_TLS | TLS_LD) |
11088 | && (h == NULL | |
f5385ebf | 11089 | || !h->elf.def_dynamic)) |
e717da7e | 11090 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 11091 | else |
5bd4f169 | 11092 | { |
d881513a | 11093 | struct got_entry *ent; |
5bd4f169 | 11094 | |
d881513a AM |
11095 | if (h != NULL) |
11096 | { | |
11097 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
11098 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
11099 | &h->elf) | |
d881513a | 11100 | || (info->shared |
039b3fef | 11101 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
11102 | /* This is actually a static link, or it is a |
11103 | -Bsymbolic link and the symbol is defined | |
11104 | locally, or the symbol was forced to be local | |
11105 | because of a version file. */ | |
11106 | ; | |
11107 | else | |
11108 | { | |
039b3fef | 11109 | indx = h->elf.dynindx; |
d881513a AM |
11110 | unresolved_reloc = FALSE; |
11111 | } | |
039b3fef | 11112 | ent = h->elf.got.glist; |
d881513a | 11113 | } |
411e1bfb | 11114 | else |
5bd4f169 | 11115 | { |
d881513a AM |
11116 | if (local_got_ents == NULL) |
11117 | abort (); | |
11118 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 11119 | } |
d881513a AM |
11120 | |
11121 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 11122 | if (ent->addend == orig_addend |
e717da7e | 11123 | && ent->owner == input_bfd |
d881513a AM |
11124 | && ent->tls_type == tls_type) |
11125 | break; | |
11126 | if (ent == NULL) | |
11127 | abort (); | |
11128 | offp = &ent->got.offset; | |
5bd4f169 | 11129 | } |
411e1bfb | 11130 | |
e717da7e AM |
11131 | got = ppc64_elf_tdata (input_bfd)->got; |
11132 | if (got == NULL) | |
11133 | abort (); | |
11134 | ||
411e1bfb AM |
11135 | /* The offset must always be a multiple of 8. We use the |
11136 | least significant bit to record whether we have already | |
11137 | processed this entry. */ | |
d881513a | 11138 | off = *offp; |
411e1bfb AM |
11139 | if ((off & 1) != 0) |
11140 | off &= ~1; | |
5bd4f169 AM |
11141 | else |
11142 | { | |
411e1bfb AM |
11143 | /* Generate relocs for the dynamic linker, except in |
11144 | the case of TLSLD where we'll use one entry per | |
11145 | module. */ | |
e717da7e AM |
11146 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
11147 | ||
d881513a | 11148 | *offp = off | 1; |
4e795f50 | 11149 | if ((info->shared || indx != 0) |
3a71aa26 AM |
11150 | && (offp == &ppc64_tlsld_got (input_bfd)->offset |
11151 | || h == NULL | |
039b3fef AM |
11152 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11153 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 11154 | { |
e717da7e AM |
11155 | outrel.r_offset = (got->output_section->vma |
11156 | + got->output_offset | |
411e1bfb | 11157 | + off); |
4cc603a5 | 11158 | outrel.r_addend = addend; |
d881513a | 11159 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 11160 | { |
411e1bfb | 11161 | outrel.r_addend = 0; |
e515b051 | 11162 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
11163 | if (tls_type == (TLS_TLS | TLS_GD)) |
11164 | { | |
e717da7e AM |
11165 | loc = relgot->contents; |
11166 | loc += (relgot->reloc_count++ | |
d881513a AM |
11167 | * sizeof (Elf64_External_Rela)); |
11168 | bfd_elf64_swap_reloca_out (output_bfd, | |
11169 | &outrel, loc); | |
e515b051 | 11170 | outrel.r_offset += 8; |
4cc603a5 | 11171 | outrel.r_addend = addend; |
d881513a AM |
11172 | outrel.r_info |
11173 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 11174 | } |
411e1bfb | 11175 | } |
951fd09b | 11176 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 11177 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 11178 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
11179 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
11180 | else if (indx == 0) | |
81407a69 AM |
11181 | { |
11182 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
11183 | ||
11184 | /* Write the .got section contents for the sake | |
11185 | of prelink. */ | |
e717da7e | 11186 | loc = got->contents + off; |
23fbd6fa JJ |
11187 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
11188 | loc); | |
81407a69 | 11189 | } |
411e1bfb AM |
11190 | else |
11191 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
11192 | |
11193 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
11194 | { |
11195 | outrel.r_addend += relocation; | |
11196 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 11197 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 11198 | } |
e717da7e AM |
11199 | loc = relgot->contents; |
11200 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
11201 | * sizeof (Elf64_External_Rela)); |
11202 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
11203 | } | |
11204 | ||
ad8e1ba5 | 11205 | /* Init the .got section contents here if we're not |
81407a69 | 11206 | emitting a reloc. */ |
d881513a | 11207 | else |
411e1bfb | 11208 | { |
4cc603a5 | 11209 | relocation += addend; |
7b609f53 AM |
11210 | if (tls_type == (TLS_TLS | TLS_LD)) |
11211 | relocation = 1; | |
11212 | else if (tls_type != 0) | |
411e1bfb | 11213 | { |
e1918d23 | 11214 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 11215 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 11216 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 11217 | |
7b609f53 AM |
11218 | if (tls_type == (TLS_TLS | TLS_GD)) |
11219 | { | |
11220 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 11221 | got->contents + off + 8); |
7b609f53 AM |
11222 | relocation = 1; |
11223 | } | |
411e1bfb | 11224 | } |
7b609f53 | 11225 | |
411e1bfb | 11226 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 11227 | got->contents + off); |
5bd4f169 AM |
11228 | } |
11229 | } | |
11230 | ||
65f38f15 AM |
11231 | if (off >= (bfd_vma) -2) |
11232 | abort (); | |
11233 | ||
e717da7e | 11234 | relocation = got->output_offset + off; |
65f38f15 | 11235 | |
5bd4f169 | 11236 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 11237 | addend = -TOC_BASE_OFF; |
5bd4f169 | 11238 | } |
65f38f15 AM |
11239 | break; |
11240 | ||
11241 | case R_PPC64_PLT16_HA: | |
11242 | case R_PPC64_PLT16_HI: | |
11243 | case R_PPC64_PLT16_LO: | |
11244 | case R_PPC64_PLT32: | |
11245 | case R_PPC64_PLT64: | |
11246 | /* Relocation is to the entry for this symbol in the | |
11247 | procedure linkage table. */ | |
11248 | ||
11249 | /* Resolve a PLT reloc against a local symbol directly, | |
11250 | without using the procedure linkage table. */ | |
11251 | if (h == NULL) | |
11252 | break; | |
11253 | ||
411e1bfb AM |
11254 | /* It's possible that we didn't make a PLT entry for this |
11255 | symbol. This happens when statically linking PIC code, | |
11256 | or when using -Bsymbolic. Go find a match if there is a | |
11257 | PLT entry. */ | |
4ce794b7 | 11258 | if (htab->plt != NULL) |
65f38f15 | 11259 | { |
411e1bfb | 11260 | struct plt_entry *ent; |
039b3fef | 11261 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 11262 | if (ent->addend == orig_addend |
411e1bfb AM |
11263 | && ent->plt.offset != (bfd_vma) -1) |
11264 | { | |
4ce794b7 AM |
11265 | relocation = (htab->plt->output_section->vma |
11266 | + htab->plt->output_offset | |
411e1bfb AM |
11267 | + ent->plt.offset); |
11268 | unresolved_reloc = FALSE; | |
11269 | } | |
65f38f15 | 11270 | } |
65f38f15 | 11271 | break; |
5bd4f169 | 11272 | |
0b13192e AM |
11273 | case R_PPC64_TOC: |
11274 | /* Relocation value is TOC base. */ | |
11275 | relocation = TOCstart; | |
11276 | if (r_symndx == 0) | |
11277 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
11278 | else if (unresolved_reloc) |
11279 | ; | |
11280 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
11281 | relocation += htab->stub_group[sec->id].toc_off; |
11282 | else | |
11283 | unresolved_reloc = TRUE; | |
ab96bf03 | 11284 | goto dodyn; |
0b13192e | 11285 | |
5bd4f169 AM |
11286 | /* TOC16 relocs. We want the offset relative to the TOC base, |
11287 | which is the address of the start of the TOC plus 0x8000. | |
11288 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
11289 | in this order. */ | |
65f38f15 AM |
11290 | case R_PPC64_TOC16: |
11291 | case R_PPC64_TOC16_LO: | |
11292 | case R_PPC64_TOC16_HI: | |
11293 | case R_PPC64_TOC16_DS: | |
11294 | case R_PPC64_TOC16_LO_DS: | |
11295 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 11296 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
11297 | break; |
11298 | ||
11299 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
11300 | case R_PPC64_SECTOFF: |
11301 | case R_PPC64_SECTOFF_LO: | |
11302 | case R_PPC64_SECTOFF_HI: | |
11303 | case R_PPC64_SECTOFF_DS: | |
11304 | case R_PPC64_SECTOFF_LO_DS: | |
11305 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 11306 | if (sec != NULL) |
65f38f15 | 11307 | addend -= sec->output_section->vma; |
5bd4f169 AM |
11308 | break; |
11309 | ||
721956f4 AM |
11310 | case R_PPC64_REL14: |
11311 | case R_PPC64_REL14_BRNTAKEN: | |
11312 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
11313 | case R_PPC64_REL24: |
11314 | break; | |
11315 | ||
411e1bfb AM |
11316 | case R_PPC64_TPREL16: |
11317 | case R_PPC64_TPREL16_LO: | |
11318 | case R_PPC64_TPREL16_HI: | |
11319 | case R_PPC64_TPREL16_HA: | |
11320 | case R_PPC64_TPREL16_DS: | |
11321 | case R_PPC64_TPREL16_LO_DS: | |
11322 | case R_PPC64_TPREL16_HIGHER: | |
11323 | case R_PPC64_TPREL16_HIGHERA: | |
11324 | case R_PPC64_TPREL16_HIGHEST: | |
11325 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 11326 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11327 | if (info->shared) |
11328 | /* The TPREL16 relocs shouldn't really be used in shared | |
11329 | libs as they will result in DT_TEXTREL being set, but | |
11330 | support them anyway. */ | |
11331 | goto dodyn; | |
11332 | break; | |
11333 | ||
11334 | case R_PPC64_DTPREL16: | |
11335 | case R_PPC64_DTPREL16_LO: | |
11336 | case R_PPC64_DTPREL16_HI: | |
11337 | case R_PPC64_DTPREL16_HA: | |
11338 | case R_PPC64_DTPREL16_DS: | |
11339 | case R_PPC64_DTPREL16_LO_DS: | |
11340 | case R_PPC64_DTPREL16_HIGHER: | |
11341 | case R_PPC64_DTPREL16_HIGHERA: | |
11342 | case R_PPC64_DTPREL16_HIGHEST: | |
11343 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 11344 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11345 | break; |
11346 | ||
e515b051 AM |
11347 | case R_PPC64_DTPMOD64: |
11348 | relocation = 1; | |
11349 | addend = 0; | |
11350 | goto dodyn; | |
11351 | ||
411e1bfb | 11352 | case R_PPC64_TPREL64: |
e1918d23 | 11353 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11354 | goto dodyn; |
11355 | ||
11356 | case R_PPC64_DTPREL64: | |
e1918d23 | 11357 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11358 | /* Fall thru */ |
11359 | ||
65f38f15 AM |
11360 | /* Relocations that may need to be propagated if this is a |
11361 | dynamic object. */ | |
04c9666a | 11362 | case R_PPC64_REL30: |
65f38f15 AM |
11363 | case R_PPC64_REL32: |
11364 | case R_PPC64_REL64: | |
11365 | case R_PPC64_ADDR14: | |
11366 | case R_PPC64_ADDR14_BRNTAKEN: | |
11367 | case R_PPC64_ADDR14_BRTAKEN: | |
11368 | case R_PPC64_ADDR16: | |
11369 | case R_PPC64_ADDR16_DS: | |
11370 | case R_PPC64_ADDR16_HA: | |
11371 | case R_PPC64_ADDR16_HI: | |
11372 | case R_PPC64_ADDR16_HIGHER: | |
11373 | case R_PPC64_ADDR16_HIGHERA: | |
11374 | case R_PPC64_ADDR16_HIGHEST: | |
11375 | case R_PPC64_ADDR16_HIGHESTA: | |
11376 | case R_PPC64_ADDR16_LO: | |
11377 | case R_PPC64_ADDR16_LO_DS: | |
11378 | case R_PPC64_ADDR24: | |
65f38f15 AM |
11379 | case R_PPC64_ADDR32: |
11380 | case R_PPC64_ADDR64: | |
11381 | case R_PPC64_UADDR16: | |
11382 | case R_PPC64_UADDR32: | |
11383 | case R_PPC64_UADDR64: | |
411e1bfb | 11384 | dodyn: |
5d1634d7 | 11385 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
11386 | break; |
11387 | ||
41bd81ab AM |
11388 | if (NO_OPD_RELOCS && is_opd) |
11389 | break; | |
11390 | ||
65f38f15 | 11391 | if ((info->shared |
4e795f50 | 11392 | && (h == NULL |
039b3fef AM |
11393 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11394 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 11395 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 11396 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
11397 | || (ELIMINATE_COPY_RELOCS |
11398 | && !info->shared | |
65f38f15 | 11399 | && h != NULL |
039b3fef | 11400 | && h->elf.dynindx != -1 |
f5385ebf | 11401 | && !h->elf.non_got_ref |
f5385ebf | 11402 | && !h->elf.def_regular)) |
65f38f15 AM |
11403 | { |
11404 | Elf_Internal_Rela outrel; | |
b34976b6 | 11405 | bfd_boolean skip, relocate; |
65f38f15 | 11406 | asection *sreloc; |
947216bf | 11407 | bfd_byte *loc; |
1cf1f670 | 11408 | bfd_vma out_off; |
65f38f15 AM |
11409 | |
11410 | /* When generating a dynamic object, these relocations | |
11411 | are copied into the output file to be resolved at run | |
11412 | time. */ | |
11413 | ||
b34976b6 AM |
11414 | skip = FALSE; |
11415 | relocate = FALSE; | |
65f38f15 | 11416 | |
1cf1f670 AM |
11417 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11418 | input_section, rel->r_offset); | |
11419 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11420 | skip = TRUE; |
1cf1f670 | 11421 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11422 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11423 | out_off += (input_section->output_section->vma |
11424 | + input_section->output_offset); | |
11425 | outrel.r_offset = out_off; | |
411e1bfb | 11426 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11427 | |
1cf1f670 AM |
11428 | /* Optimize unaligned reloc use. */ |
11429 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11430 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11431 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11432 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11433 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11434 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11435 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11436 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11437 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11438 | ||
65f38f15 | 11439 | if (skip) |
0bb2d96a | 11440 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11441 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11442 | && !is_opd |
11443 | && r_type != R_PPC64_TOC) | |
039b3fef | 11444 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11445 | else |
11446 | { | |
41bd81ab AM |
11447 | /* This symbol is local, or marked to become local, |
11448 | or this is an opd section reloc which must point | |
11449 | at a local function. */ | |
65f38f15 | 11450 | outrel.r_addend += relocation; |
e86ce104 | 11451 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11452 | { |
3fad3c7c | 11453 | if (is_opd && h != NULL) |
afbe61cf AM |
11454 | { |
11455 | /* Lie about opd entries. This case occurs | |
11456 | when building shared libraries and we | |
11457 | reference a function in another shared | |
3fad3c7c AM |
11458 | lib. The same thing happens for a weak |
11459 | definition in an application that's | |
11460 | overridden by a strong definition in a | |
11461 | shared lib. (I believe this is a generic | |
11462 | bug in binutils handling of weak syms.) | |
11463 | In these cases we won't use the opd | |
1e2f5b6e | 11464 | entry in this lib. */ |
b34976b6 | 11465 | unresolved_reloc = FALSE; |
afbe61cf | 11466 | } |
65f38f15 | 11467 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
11468 | |
11469 | /* We need to relocate .opd contents for ld.so. | |
11470 | Prelink also wants simple and consistent rules | |
11471 | for relocs. This make all RELATIVE relocs have | |
11472 | *r_offset equal to r_addend. */ | |
11473 | relocate = TRUE; | |
65f38f15 AM |
11474 | } |
11475 | else | |
11476 | { | |
11477 | long indx = 0; | |
11478 | ||
1d483afe | 11479 | if (r_symndx == 0 || bfd_is_abs_section (sec)) |
65f38f15 AM |
11480 | ; |
11481 | else if (sec == NULL || sec->owner == NULL) | |
11482 | { | |
11483 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11484 | return FALSE; |
65f38f15 AM |
11485 | } |
11486 | else | |
11487 | { | |
11488 | asection *osec; | |
11489 | ||
11490 | osec = sec->output_section; | |
11491 | indx = elf_section_data (osec)->dynindx; | |
11492 | ||
74541ad4 AM |
11493 | if (indx == 0) |
11494 | { | |
11495 | if ((osec->flags & SEC_READONLY) == 0 | |
11496 | && htab->elf.data_index_section != NULL) | |
11497 | osec = htab->elf.data_index_section; | |
11498 | else | |
11499 | osec = htab->elf.text_index_section; | |
11500 | indx = elf_section_data (osec)->dynindx; | |
11501 | } | |
11502 | BFD_ASSERT (indx != 0); | |
11503 | ||
65f38f15 AM |
11504 | /* We are turning this relocation into one |
11505 | against a section symbol, so subtract out | |
11506 | the output section's address but not the | |
11507 | offset of the input section in the output | |
11508 | section. */ | |
11509 | outrel.r_addend -= osec->vma; | |
11510 | } | |
11511 | ||
11512 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
11513 | } | |
11514 | } | |
11515 | ||
11516 | sreloc = elf_section_data (input_section)->sreloc; | |
11517 | if (sreloc == NULL) | |
11518 | abort (); | |
11519 | ||
dfbb6ac9 AM |
11520 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11521 | >= sreloc->size) | |
11522 | abort (); | |
947216bf AM |
11523 | loc = sreloc->contents; |
11524 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11525 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11526 | ||
11527 | /* If this reloc is against an external symbol, it will | |
11528 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11529 | anything now. However, for the sake of prelink ensure |
11530 | that the section contents are a known value. */ | |
65f38f15 | 11531 | if (! relocate) |
81407a69 AM |
11532 | { |
11533 | unresolved_reloc = FALSE; | |
11534 | /* The value chosen here is quite arbitrary as ld.so | |
11535 | ignores section contents except for the special | |
11536 | case of .opd where the contents might be accessed | |
11537 | before relocation. Choose zero, as that won't | |
11538 | cause reloc overflow. */ | |
11539 | relocation = 0; | |
11540 | addend = 0; | |
11541 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11542 | to improve backward compatibility with older | |
11543 | versions of ld. */ | |
11544 | if (r_type == R_PPC64_ADDR64) | |
11545 | addend = outrel.r_addend; | |
11546 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11547 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11548 | addend = (input_section->output_section->vma |
11549 | + input_section->output_offset | |
11550 | + rel->r_offset); | |
81407a69 | 11551 | } |
65f38f15 | 11552 | } |
5bd4f169 AM |
11553 | break; |
11554 | ||
65f38f15 AM |
11555 | case R_PPC64_COPY: |
11556 | case R_PPC64_GLOB_DAT: | |
11557 | case R_PPC64_JMP_SLOT: | |
11558 | case R_PPC64_RELATIVE: | |
11559 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11560 | files. */ | |
ae9a127f | 11561 | /* Fall through. */ |
65f38f15 AM |
11562 | |
11563 | case R_PPC64_PLTGOT16: | |
11564 | case R_PPC64_PLTGOT16_DS: | |
11565 | case R_PPC64_PLTGOT16_HA: | |
11566 | case R_PPC64_PLTGOT16_HI: | |
11567 | case R_PPC64_PLTGOT16_LO: | |
11568 | case R_PPC64_PLTGOT16_LO_DS: | |
11569 | case R_PPC64_PLTREL32: | |
11570 | case R_PPC64_PLTREL64: | |
11571 | /* These ones haven't been implemented yet. */ | |
11572 | ||
11573 | (*_bfd_error_handler) | |
d003868e AM |
11574 | (_("%B: relocation %s is not supported for symbol %s."), |
11575 | input_bfd, | |
4ce794b7 | 11576 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11577 | |
11578 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11579 | ret = FALSE; |
5bd4f169 | 11580 | continue; |
65f38f15 | 11581 | } |
5bd4f169 | 11582 | |
65f38f15 AM |
11583 | /* Do any further special processing. */ |
11584 | switch (r_type) | |
11585 | { | |
11586 | default: | |
11587 | break; | |
11588 | ||
11589 | case R_PPC64_ADDR16_HA: | |
11590 | case R_PPC64_ADDR16_HIGHERA: | |
11591 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11592 | case R_PPC64_TOC16_HA: |
11593 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11594 | case R_PPC64_TPREL16_HA: |
11595 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11596 | case R_PPC64_TPREL16_HIGHER: |
11597 | case R_PPC64_TPREL16_HIGHERA: | |
11598 | case R_PPC64_TPREL16_HIGHEST: | |
11599 | case R_PPC64_TPREL16_HIGHESTA: | |
11600 | case R_PPC64_DTPREL16_HIGHER: | |
11601 | case R_PPC64_DTPREL16_HIGHERA: | |
11602 | case R_PPC64_DTPREL16_HIGHEST: | |
11603 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11604 | /* It's just possible that this symbol is a weak symbol |
11605 | that's not actually defined anywhere. In that case, | |
11606 | 'sec' would be NULL, and we should leave the symbol | |
11607 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11608 | if (sec == NULL) |
11609 | break; | |
11610 | /* Fall thru */ | |
11611 | ||
11612 | case R_PPC64_GOT16_HA: | |
11613 | case R_PPC64_PLTGOT16_HA: | |
11614 | case R_PPC64_PLT16_HA: | |
11615 | case R_PPC64_GOT_TLSGD16_HA: | |
11616 | case R_PPC64_GOT_TLSLD16_HA: | |
11617 | case R_PPC64_GOT_TPREL16_HA: | |
11618 | case R_PPC64_GOT_DTPREL16_HA: | |
11619 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11620 | Bits 0:15 are not used. */ | |
11621 | addend += 0x8000; | |
65f38f15 AM |
11622 | break; |
11623 | ||
11624 | case R_PPC64_ADDR16_DS: | |
11625 | case R_PPC64_ADDR16_LO_DS: | |
11626 | case R_PPC64_GOT16_DS: | |
11627 | case R_PPC64_GOT16_LO_DS: | |
11628 | case R_PPC64_PLT16_LO_DS: | |
11629 | case R_PPC64_SECTOFF_DS: | |
11630 | case R_PPC64_SECTOFF_LO_DS: | |
11631 | case R_PPC64_TOC16_DS: | |
11632 | case R_PPC64_TOC16_LO_DS: | |
11633 | case R_PPC64_PLTGOT16_DS: | |
11634 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11635 | case R_PPC64_GOT_TPREL16_DS: |
11636 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11637 | case R_PPC64_GOT_DTPREL16_DS: | |
11638 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11639 | case R_PPC64_TPREL16_DS: | |
11640 | case R_PPC64_TPREL16_LO_DS: | |
11641 | case R_PPC64_DTPREL16_DS: | |
11642 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11643 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11644 | mask = 3; | |
11645 | /* If this reloc is against an lq insn, then the value must be | |
11646 | a multiple of 16. This is somewhat of a hack, but the | |
11647 | "correct" way to do this by defining _DQ forms of all the | |
11648 | _DS relocs bloats all reloc switches in this file. It | |
11649 | doesn't seem to make much sense to use any of these relocs | |
11650 | in data, so testing the insn should be safe. */ | |
494dac0c | 11651 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11652 | mask = 15; |
11653 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11654 | { |
11655 | (*_bfd_error_handler) | |
d003868e AM |
11656 | (_("%B: error: relocation %s not a multiple of %d"), |
11657 | input_bfd, | |
4ce794b7 | 11658 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11659 | mask + 1); |
65f38f15 | 11660 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11661 | ret = FALSE; |
65f38f15 AM |
11662 | continue; |
11663 | } | |
11664 | break; | |
5bd4f169 AM |
11665 | } |
11666 | ||
239e1f3a AM |
11667 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11668 | because such sections are not SEC_ALLOC and thus ld.so will | |
11669 | not process them. */ | |
65f38f15 | 11670 | if (unresolved_reloc |
239e1f3a | 11671 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11672 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11673 | { |
11674 | (*_bfd_error_handler) | |
d003868e AM |
11675 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11676 | input_bfd, | |
11677 | input_section, | |
9c07fe7c | 11678 | (long) rel->r_offset, |
7b609f53 | 11679 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11680 | h->elf.root.root.string); |
b34976b6 | 11681 | ret = FALSE; |
9c07fe7c | 11682 | } |
5bd4f169 | 11683 | |
65f38f15 | 11684 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11685 | input_bfd, |
11686 | input_section, | |
11687 | contents, | |
411e1bfb | 11688 | rel->r_offset, |
5bd4f169 AM |
11689 | relocation, |
11690 | addend); | |
11691 | ||
ef60b7ff | 11692 | if (r != bfd_reloc_ok) |
5bd4f169 | 11693 | { |
cd27b276 AM |
11694 | if (sym_name == NULL) |
11695 | sym_name = "(null)"; | |
11696 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11697 | { |
cd27b276 AM |
11698 | if (warned) |
11699 | continue; | |
11700 | if (h != NULL | |
039b3fef | 11701 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11702 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11703 | { |
11704 | /* Assume this is a call protected by other code that | |
11705 | detects the symbol is undefined. If this is the case, | |
11706 | we can safely ignore the overflow. If not, the | |
11707 | program is hosed anyway, and a little warning isn't | |
11708 | going to help. */ | |
11709 | ||
11710 | continue; | |
11711 | } | |
11712 | ||
ef60b7ff | 11713 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11714 | (info, (h ? &h->elf.root : NULL), sym_name, |
11715 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11716 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11717 | return FALSE; |
ef60b7ff AM |
11718 | } |
11719 | else | |
11720 | { | |
11721 | (*_bfd_error_handler) | |
d003868e AM |
11722 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11723 | input_bfd, | |
11724 | input_section, | |
7b609f53 | 11725 | (long) rel->r_offset, |
4ce794b7 | 11726 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11727 | sym_name, |
11728 | (int) r); | |
b34976b6 | 11729 | ret = FALSE; |
ef60b7ff | 11730 | } |
5bd4f169 | 11731 | } |
5bd4f169 AM |
11732 | } |
11733 | ||
645ea6a9 AM |
11734 | /* If we're emitting relocations, then shortly after this function |
11735 | returns, reloc offsets and addends for this section will be | |
11736 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11737 | file rather than the input. Save a copy of the relocs for |
11738 | opd_entry_value. */ | |
4cc603a5 | 11739 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11740 | { |
11741 | bfd_size_type amt; | |
11742 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11743 | rel = bfd_alloc (input_bfd, amt); | |
11744 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11745 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11746 | if (rel == NULL) | |
11747 | return FALSE; | |
11748 | memcpy (rel, relocs, amt); | |
11749 | } | |
5bd4f169 AM |
11750 | return ret; |
11751 | } | |
11752 | ||
754021d0 AM |
11753 | /* Adjust the value of any local symbols in opd sections. */ |
11754 | ||
11755 | static bfd_boolean | |
11756 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11757 | const char *name ATTRIBUTE_UNUSED, | |
11758 | Elf_Internal_Sym *elfsym, | |
11759 | asection *input_sec, | |
11760 | struct elf_link_hash_entry *h) | |
11761 | { | |
74f0fb50 AM |
11762 | struct _opd_sec_data *opd; |
11763 | long adjust; | |
754021d0 AM |
11764 | bfd_vma value; |
11765 | ||
4025353c AM |
11766 | if (h != NULL) |
11767 | return TRUE; | |
11768 | ||
74f0fb50 AM |
11769 | opd = get_opd_info (input_sec); |
11770 | if (opd == NULL || opd->adjust == NULL) | |
754021d0 AM |
11771 | return TRUE; |
11772 | ||
11773 | value = elfsym->st_value - input_sec->output_offset; | |
11774 | if (!info->relocatable) | |
11775 | value -= input_sec->output_section->vma; | |
11776 | ||
74f0fb50 | 11777 | adjust = opd->adjust[value / 8]; |
4025353c AM |
11778 | if (adjust == -1) |
11779 | elfsym->st_value = 0; | |
11780 | else | |
11781 | elfsym->st_value += adjust; | |
754021d0 AM |
11782 | return TRUE; |
11783 | } | |
11784 | ||
5bd4f169 AM |
11785 | /* Finish up dynamic symbol handling. We set the contents of various |
11786 | dynamic sections here. */ | |
11787 | ||
b34976b6 | 11788 | static bfd_boolean |
4ce794b7 AM |
11789 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11790 | struct bfd_link_info *info, | |
11791 | struct elf_link_hash_entry *h, | |
11792 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11793 | { |
65f38f15 | 11794 | struct ppc_link_hash_table *htab; |
8387904d AM |
11795 | struct plt_entry *ent; |
11796 | Elf_Internal_Rela rela; | |
11797 | bfd_byte *loc; | |
5bd4f169 | 11798 | |
65f38f15 | 11799 | htab = ppc_hash_table (info); |
5bd4f169 | 11800 | |
8387904d AM |
11801 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11802 | if (ent->plt.offset != (bfd_vma) -1) | |
11803 | { | |
11804 | /* This symbol has an entry in the procedure linkage | |
11805 | table. Set it up. */ | |
11806 | ||
11807 | if (htab->plt == NULL | |
11808 | || htab->relplt == NULL | |
11809 | || htab->glink == NULL) | |
11810 | abort (); | |
11811 | ||
11812 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11813 | fill in the PLT entry. */ | |
11814 | rela.r_offset = (htab->plt->output_section->vma | |
11815 | + htab->plt->output_offset | |
11816 | + ent->plt.offset); | |
11817 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11818 | rela.r_addend = ent->addend; | |
11819 | ||
11820 | loc = htab->relplt->contents; | |
11821 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11822 | * sizeof (Elf64_External_Rela)); | |
11823 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11824 | } | |
5bd4f169 | 11825 | |
f5385ebf | 11826 | if (h->needs_copy) |
5bd4f169 | 11827 | { |
5bd4f169 | 11828 | Elf_Internal_Rela rela; |
947216bf | 11829 | bfd_byte *loc; |
5bd4f169 | 11830 | |
65f38f15 | 11831 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11832 | |
65f38f15 AM |
11833 | if (h->dynindx == -1 |
11834 | || (h->root.type != bfd_link_hash_defined | |
11835 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11836 | || htab->relbss == NULL) |
65f38f15 | 11837 | abort (); |
5bd4f169 AM |
11838 | |
11839 | rela.r_offset = (h->root.u.def.value | |
11840 | + h->root.u.def.section->output_section->vma | |
11841 | + h->root.u.def.section->output_offset); | |
11842 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11843 | rela.r_addend = 0; | |
4ce794b7 AM |
11844 | loc = htab->relbss->contents; |
11845 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11846 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11847 | } |
11848 | ||
5bd4f169 AM |
11849 | /* Mark some specially defined symbols as absolute. */ |
11850 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11851 | sym->st_shndx = SHN_ABS; | |
11852 | ||
b34976b6 | 11853 | return TRUE; |
5bd4f169 AM |
11854 | } |
11855 | ||
65f38f15 AM |
11856 | /* Used to decide how to sort relocs in an optimal manner for the |
11857 | dynamic linker, before writing them out. */ | |
11858 | ||
11859 | static enum elf_reloc_type_class | |
4ce794b7 | 11860 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11861 | { |
04c9666a | 11862 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11863 | |
4ce794b7 | 11864 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11865 | switch (r_type) |
65f38f15 AM |
11866 | { |
11867 | case R_PPC64_RELATIVE: | |
11868 | return reloc_class_relative; | |
11869 | case R_PPC64_JMP_SLOT: | |
11870 | return reloc_class_plt; | |
11871 | case R_PPC64_COPY: | |
11872 | return reloc_class_copy; | |
11873 | default: | |
11874 | return reloc_class_normal; | |
11875 | } | |
11876 | } | |
11877 | ||
5bd4f169 AM |
11878 | /* Finish up the dynamic sections. */ |
11879 | ||
b34976b6 | 11880 | static bfd_boolean |
4ce794b7 AM |
11881 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11882 | struct bfd_link_info *info) | |
5bd4f169 | 11883 | { |
65f38f15 AM |
11884 | struct ppc_link_hash_table *htab; |
11885 | bfd *dynobj; | |
5bd4f169 | 11886 | asection *sdyn; |
5bd4f169 | 11887 | |
65f38f15 AM |
11888 | htab = ppc_hash_table (info); |
11889 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11890 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11891 | ||
65f38f15 | 11892 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11893 | { |
5bd4f169 AM |
11894 | Elf64_External_Dyn *dyncon, *dynconend; |
11895 | ||
4ce794b7 | 11896 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11897 | abort (); |
5bd4f169 AM |
11898 | |
11899 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11900 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11901 | for (; dyncon < dynconend; dyncon++) |
11902 | { | |
11903 | Elf_Internal_Dyn dyn; | |
19397422 | 11904 | asection *s; |
5bd4f169 AM |
11905 | |
11906 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11907 | ||
11908 | switch (dyn.d_tag) | |
11909 | { | |
65f38f15 AM |
11910 | default: |
11911 | continue; | |
5bd4f169 | 11912 | |
5d1634d7 | 11913 | case DT_PPC64_GLINK: |
4ce794b7 | 11914 | s = htab->glink; |
6348e046 | 11915 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11916 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11917 | of glink rather than the first entry point, which is | |
11918 | what ld.so needs, and now have a bigger stub to | |
11919 | support automatic multiple TOCs. */ | |
11920 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11921 | break; |
11922 | ||
19397422 AM |
11923 | case DT_PPC64_OPD: |
11924 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11925 | if (s == NULL) |
11926 | continue; | |
11927 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11928 | break; |
11929 | ||
11930 | case DT_PPC64_OPDSZ: | |
11931 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11932 | if (s == NULL) |
11933 | continue; | |
eea6121a | 11934 | dyn.d_un.d_val = s->size; |
19397422 AM |
11935 | break; |
11936 | ||
65f38f15 | 11937 | case DT_PLTGOT: |
4ce794b7 | 11938 | s = htab->plt; |
6348e046 | 11939 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11940 | break; |
11941 | ||
11942 | case DT_JMPREL: | |
4ce794b7 | 11943 | s = htab->relplt; |
6348e046 | 11944 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11945 | break; |
5bd4f169 | 11946 | |
65f38f15 | 11947 | case DT_PLTRELSZ: |
eea6121a | 11948 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11949 | break; |
11950 | ||
11951 | case DT_RELASZ: | |
11952 | /* Don't count procedure linkage table relocs in the | |
11953 | overall reloc count. */ | |
4ce794b7 | 11954 | s = htab->relplt; |
6348e046 AM |
11955 | if (s == NULL) |
11956 | continue; | |
eea6121a | 11957 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11958 | break; |
11959 | ||
11960 | case DT_RELA: | |
11961 | /* We may not be using the standard ELF linker script. | |
11962 | If .rela.plt is the first .rela section, we adjust | |
11963 | DT_RELA to not include it. */ | |
4ce794b7 | 11964 | s = htab->relplt; |
6348e046 AM |
11965 | if (s == NULL) |
11966 | continue; | |
11967 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11968 | continue; | |
eea6121a | 11969 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11970 | break; |
5bd4f169 | 11971 | } |
5bd4f169 | 11972 | |
65f38f15 | 11973 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11974 | } |
5bd4f169 AM |
11975 | } |
11976 | ||
eea6121a | 11977 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11978 | { |
11979 | /* Fill in the first entry in the global offset table. | |
11980 | We use it to hold the link-time TOCbase. */ | |
11981 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11982 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11983 | htab->got->contents); |
5d1634d7 AM |
11984 | |
11985 | /* Set .got entry size. */ | |
4ce794b7 | 11986 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11987 | } |
11988 | ||
eea6121a | 11989 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11990 | { |
11991 | /* Set .plt entry size. */ | |
4ce794b7 | 11992 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11993 | = PLT_ENTRY_SIZE; |
11994 | } | |
11995 | ||
84f5d08e AM |
11996 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11997 | brlt ourselves if emitrelocations. */ | |
11998 | if (htab->brlt != NULL | |
11999 | && htab->brlt->reloc_count != 0 | |
12000 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12001 | htab->brlt, | |
12002 | &elf_section_data (htab->brlt)->rel_hdr, | |
12003 | elf_section_data (htab->brlt)->relocs, | |
12004 | NULL)) | |
12005 | return FALSE; | |
12006 | ||
176a0d42 AM |
12007 | if (htab->glink != NULL |
12008 | && htab->glink->reloc_count != 0 | |
12009 | && !_bfd_elf_link_output_relocs (output_bfd, | |
12010 | htab->glink, | |
12011 | &elf_section_data (htab->glink)->rel_hdr, | |
12012 | elf_section_data (htab->glink)->relocs, | |
12013 | NULL)) | |
12014 | return FALSE; | |
12015 | ||
e717da7e | 12016 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
12017 | since we didn't add them to DYNOBJ. We know dynobj is the first |
12018 | bfd. */ | |
e717da7e AM |
12019 | while ((dynobj = dynobj->link_next) != NULL) |
12020 | { | |
12021 | asection *s; | |
7b53ace3 | 12022 | |
0c8d6e5c | 12023 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
12024 | continue; |
12025 | ||
e717da7e AM |
12026 | s = ppc64_elf_tdata (dynobj)->got; |
12027 | if (s != NULL | |
eea6121a | 12028 | && s->size != 0 |
e717da7e AM |
12029 | && s->output_section != bfd_abs_section_ptr |
12030 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12031 | s->contents, s->output_offset, | |
eea6121a | 12032 | s->size)) |
e717da7e AM |
12033 | return FALSE; |
12034 | s = ppc64_elf_tdata (dynobj)->relgot; | |
12035 | if (s != NULL | |
eea6121a | 12036 | && s->size != 0 |
e717da7e AM |
12037 | && s->output_section != bfd_abs_section_ptr |
12038 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
12039 | s->contents, s->output_offset, | |
eea6121a | 12040 | s->size)) |
e717da7e AM |
12041 | return FALSE; |
12042 | } | |
f6c52c13 | 12043 | |
b34976b6 | 12044 | return TRUE; |
5bd4f169 AM |
12045 | } |
12046 | ||
5bd4f169 | 12047 | #include "elf64-target.h" |