Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
74f0fb50 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
5bd4f169 | 37 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
56 | static bfd_vma opd_entry_value |
57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 58 | |
ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
63 | #define ELF_ARCH bfd_arch_powerpc | |
64 | #define ELF_MACHINE_CODE EM_PPC64 | |
65 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
68 | ||
69 | #define elf_backend_want_got_sym 0 | |
70 | #define elf_backend_want_plt_sym 0 | |
71 | #define elf_backend_plt_alignment 3 | |
72 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
75 | #define elf_backend_can_refcount 1 | |
76 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 78 | |
e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
87 | |
88 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
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 | ||
1238 | /* Marker reloc for TLS. */ | |
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 | ||
1253 | /* Computes the load module index of the load module that contains the | |
1254 | definition of its TLS sym. */ | |
1255 | HOWTO (R_PPC64_DTPMOD64, | |
1256 | 0, /* rightshift */ | |
1257 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1258 | 64, /* bitsize */ | |
1259 | FALSE, /* pc_relative */ | |
1260 | 0, /* bitpos */ | |
1261 | complain_overflow_dont, /* complain_on_overflow */ | |
1262 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1263 | "R_PPC64_DTPMOD64", /* name */ | |
1264 | FALSE, /* partial_inplace */ | |
1265 | 0, /* src_mask */ | |
1266 | ONES (64), /* dst_mask */ | |
1267 | FALSE), /* pcrel_offset */ | |
1268 | ||
1269 | /* Computes a dtv-relative displacement, the difference between the value | |
1270 | of sym+add and the base address of the thread-local storage block that | |
1271 | contains the definition of sym, minus 0x8000. */ | |
1272 | HOWTO (R_PPC64_DTPREL64, | |
1273 | 0, /* rightshift */ | |
1274 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1275 | 64, /* bitsize */ | |
1276 | FALSE, /* pc_relative */ | |
1277 | 0, /* bitpos */ | |
1278 | complain_overflow_dont, /* complain_on_overflow */ | |
1279 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1280 | "R_PPC64_DTPREL64", /* name */ | |
1281 | FALSE, /* partial_inplace */ | |
1282 | 0, /* src_mask */ | |
1283 | ONES (64), /* dst_mask */ | |
1284 | FALSE), /* pcrel_offset */ | |
1285 | ||
1286 | /* A 16 bit dtprel reloc. */ | |
1287 | HOWTO (R_PPC64_DTPREL16, | |
1288 | 0, /* rightshift */ | |
1289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1290 | 16, /* bitsize */ | |
1291 | FALSE, /* pc_relative */ | |
1292 | 0, /* bitpos */ | |
1293 | complain_overflow_signed, /* complain_on_overflow */ | |
1294 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1295 | "R_PPC64_DTPREL16", /* name */ | |
1296 | FALSE, /* partial_inplace */ | |
1297 | 0, /* src_mask */ | |
1298 | 0xffff, /* dst_mask */ | |
1299 | FALSE), /* pcrel_offset */ | |
1300 | ||
1301 | /* Like DTPREL16, but no overflow. */ | |
1302 | HOWTO (R_PPC64_DTPREL16_LO, | |
1303 | 0, /* rightshift */ | |
1304 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1305 | 16, /* bitsize */ | |
1306 | FALSE, /* pc_relative */ | |
1307 | 0, /* bitpos */ | |
1308 | complain_overflow_dont, /* complain_on_overflow */ | |
1309 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1310 | "R_PPC64_DTPREL16_LO", /* name */ | |
1311 | FALSE, /* partial_inplace */ | |
1312 | 0, /* src_mask */ | |
1313 | 0xffff, /* dst_mask */ | |
1314 | FALSE), /* pcrel_offset */ | |
1315 | ||
1316 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1317 | HOWTO (R_PPC64_DTPREL16_HI, | |
1318 | 16, /* rightshift */ | |
1319 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1320 | 16, /* bitsize */ | |
1321 | FALSE, /* pc_relative */ | |
1322 | 0, /* bitpos */ | |
1323 | complain_overflow_dont, /* complain_on_overflow */ | |
1324 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1325 | "R_PPC64_DTPREL16_HI", /* name */ | |
1326 | FALSE, /* partial_inplace */ | |
1327 | 0, /* src_mask */ | |
1328 | 0xffff, /* dst_mask */ | |
1329 | FALSE), /* pcrel_offset */ | |
1330 | ||
1331 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1332 | HOWTO (R_PPC64_DTPREL16_HA, | |
1333 | 16, /* rightshift */ | |
1334 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1335 | 16, /* bitsize */ | |
1336 | FALSE, /* pc_relative */ | |
1337 | 0, /* bitpos */ | |
1338 | complain_overflow_dont, /* complain_on_overflow */ | |
1339 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1340 | "R_PPC64_DTPREL16_HA", /* name */ | |
1341 | FALSE, /* partial_inplace */ | |
1342 | 0, /* src_mask */ | |
1343 | 0xffff, /* dst_mask */ | |
1344 | FALSE), /* pcrel_offset */ | |
1345 | ||
1346 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1347 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1348 | 32, /* rightshift */ | |
1349 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1350 | 16, /* bitsize */ | |
1351 | FALSE, /* pc_relative */ | |
1352 | 0, /* bitpos */ | |
1353 | complain_overflow_dont, /* complain_on_overflow */ | |
1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1355 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1356 | FALSE, /* partial_inplace */ | |
1357 | 0, /* src_mask */ | |
1358 | 0xffff, /* dst_mask */ | |
1359 | FALSE), /* pcrel_offset */ | |
1360 | ||
1361 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1362 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1363 | 32, /* rightshift */ | |
1364 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1365 | 16, /* bitsize */ | |
1366 | FALSE, /* pc_relative */ | |
1367 | 0, /* bitpos */ | |
1368 | complain_overflow_dont, /* complain_on_overflow */ | |
1369 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1370 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1371 | FALSE, /* partial_inplace */ | |
1372 | 0, /* src_mask */ | |
1373 | 0xffff, /* dst_mask */ | |
1374 | FALSE), /* pcrel_offset */ | |
1375 | ||
1376 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1377 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1378 | 48, /* rightshift */ | |
1379 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1380 | 16, /* bitsize */ | |
1381 | FALSE, /* pc_relative */ | |
1382 | 0, /* bitpos */ | |
1383 | complain_overflow_dont, /* complain_on_overflow */ | |
1384 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1385 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1386 | FALSE, /* partial_inplace */ | |
1387 | 0, /* src_mask */ | |
1388 | 0xffff, /* dst_mask */ | |
1389 | FALSE), /* pcrel_offset */ | |
1390 | ||
1391 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1392 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1393 | 48, /* rightshift */ | |
1394 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1395 | 16, /* bitsize */ | |
1396 | FALSE, /* pc_relative */ | |
1397 | 0, /* bitpos */ | |
1398 | complain_overflow_dont, /* complain_on_overflow */ | |
1399 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1400 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1401 | FALSE, /* partial_inplace */ | |
1402 | 0, /* src_mask */ | |
1403 | 0xffff, /* dst_mask */ | |
1404 | FALSE), /* pcrel_offset */ | |
1405 | ||
1406 | /* Like DTPREL16, but for insns with a DS field. */ | |
1407 | HOWTO (R_PPC64_DTPREL16_DS, | |
1408 | 0, /* rightshift */ | |
1409 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 16, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
1413 | complain_overflow_signed, /* complain_on_overflow */ | |
1414 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1415 | "R_PPC64_DTPREL16_DS", /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0, /* src_mask */ | |
1418 | 0xfffc, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | ||
1421 | /* Like DTPREL16_DS, but no overflow. */ | |
1422 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1423 | 0, /* rightshift */ | |
1424 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1425 | 16, /* bitsize */ | |
1426 | FALSE, /* pc_relative */ | |
1427 | 0, /* bitpos */ | |
1428 | complain_overflow_dont, /* complain_on_overflow */ | |
1429 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1430 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1431 | FALSE, /* partial_inplace */ | |
1432 | 0, /* src_mask */ | |
1433 | 0xfffc, /* dst_mask */ | |
1434 | FALSE), /* pcrel_offset */ | |
1435 | ||
1436 | /* Computes a tp-relative displacement, the difference between the value of | |
1437 | sym+add and the value of the thread pointer (r13). */ | |
1438 | HOWTO (R_PPC64_TPREL64, | |
1439 | 0, /* rightshift */ | |
1440 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1441 | 64, /* bitsize */ | |
1442 | FALSE, /* pc_relative */ | |
1443 | 0, /* bitpos */ | |
1444 | complain_overflow_dont, /* complain_on_overflow */ | |
1445 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1446 | "R_PPC64_TPREL64", /* name */ | |
1447 | FALSE, /* partial_inplace */ | |
1448 | 0, /* src_mask */ | |
1449 | ONES (64), /* dst_mask */ | |
1450 | FALSE), /* pcrel_offset */ | |
1451 | ||
1452 | /* A 16 bit tprel reloc. */ | |
1453 | HOWTO (R_PPC64_TPREL16, | |
1454 | 0, /* rightshift */ | |
1455 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1456 | 16, /* bitsize */ | |
1457 | FALSE, /* pc_relative */ | |
1458 | 0, /* bitpos */ | |
1459 | complain_overflow_signed, /* complain_on_overflow */ | |
1460 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1461 | "R_PPC64_TPREL16", /* name */ | |
1462 | FALSE, /* partial_inplace */ | |
1463 | 0, /* src_mask */ | |
1464 | 0xffff, /* dst_mask */ | |
1465 | FALSE), /* pcrel_offset */ | |
1466 | ||
1467 | /* Like TPREL16, but no overflow. */ | |
1468 | HOWTO (R_PPC64_TPREL16_LO, | |
1469 | 0, /* rightshift */ | |
1470 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1471 | 16, /* bitsize */ | |
1472 | FALSE, /* pc_relative */ | |
1473 | 0, /* bitpos */ | |
1474 | complain_overflow_dont, /* complain_on_overflow */ | |
1475 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1476 | "R_PPC64_TPREL16_LO", /* name */ | |
1477 | FALSE, /* partial_inplace */ | |
1478 | 0, /* src_mask */ | |
1479 | 0xffff, /* dst_mask */ | |
1480 | FALSE), /* pcrel_offset */ | |
1481 | ||
1482 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1483 | HOWTO (R_PPC64_TPREL16_HI, | |
1484 | 16, /* rightshift */ | |
1485 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1486 | 16, /* bitsize */ | |
1487 | FALSE, /* pc_relative */ | |
1488 | 0, /* bitpos */ | |
1489 | complain_overflow_dont, /* complain_on_overflow */ | |
1490 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1491 | "R_PPC64_TPREL16_HI", /* name */ | |
1492 | FALSE, /* partial_inplace */ | |
1493 | 0, /* src_mask */ | |
1494 | 0xffff, /* dst_mask */ | |
1495 | FALSE), /* pcrel_offset */ | |
1496 | ||
1497 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1498 | HOWTO (R_PPC64_TPREL16_HA, | |
1499 | 16, /* rightshift */ | |
1500 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1501 | 16, /* bitsize */ | |
1502 | FALSE, /* pc_relative */ | |
1503 | 0, /* bitpos */ | |
1504 | complain_overflow_dont, /* complain_on_overflow */ | |
1505 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1506 | "R_PPC64_TPREL16_HA", /* name */ | |
1507 | FALSE, /* partial_inplace */ | |
1508 | 0, /* src_mask */ | |
1509 | 0xffff, /* dst_mask */ | |
1510 | FALSE), /* pcrel_offset */ | |
1511 | ||
1512 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1513 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1514 | 32, /* rightshift */ | |
1515 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 16, /* bitsize */ | |
1517 | FALSE, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_dont, /* complain_on_overflow */ | |
1520 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1521 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1522 | FALSE, /* partial_inplace */ | |
1523 | 0, /* src_mask */ | |
1524 | 0xffff, /* dst_mask */ | |
1525 | FALSE), /* pcrel_offset */ | |
1526 | ||
1527 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1528 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1529 | 32, /* rightshift */ | |
1530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1531 | 16, /* bitsize */ | |
1532 | FALSE, /* pc_relative */ | |
1533 | 0, /* bitpos */ | |
1534 | complain_overflow_dont, /* complain_on_overflow */ | |
1535 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1536 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1537 | FALSE, /* partial_inplace */ | |
1538 | 0, /* src_mask */ | |
1539 | 0xffff, /* dst_mask */ | |
1540 | FALSE), /* pcrel_offset */ | |
1541 | ||
1542 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1543 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1544 | 48, /* rightshift */ | |
1545 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1546 | 16, /* bitsize */ | |
1547 | FALSE, /* pc_relative */ | |
1548 | 0, /* bitpos */ | |
1549 | complain_overflow_dont, /* complain_on_overflow */ | |
1550 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1551 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1552 | FALSE, /* partial_inplace */ | |
1553 | 0, /* src_mask */ | |
1554 | 0xffff, /* dst_mask */ | |
1555 | FALSE), /* pcrel_offset */ | |
1556 | ||
1557 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1558 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1559 | 48, /* rightshift */ | |
1560 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1561 | 16, /* bitsize */ | |
1562 | FALSE, /* pc_relative */ | |
1563 | 0, /* bitpos */ | |
1564 | complain_overflow_dont, /* complain_on_overflow */ | |
1565 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1566 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1567 | FALSE, /* partial_inplace */ | |
1568 | 0, /* src_mask */ | |
1569 | 0xffff, /* dst_mask */ | |
1570 | FALSE), /* pcrel_offset */ | |
1571 | ||
1572 | /* Like TPREL16, but for insns with a DS field. */ | |
1573 | HOWTO (R_PPC64_TPREL16_DS, | |
1574 | 0, /* rightshift */ | |
1575 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1576 | 16, /* bitsize */ | |
1577 | FALSE, /* pc_relative */ | |
1578 | 0, /* bitpos */ | |
1579 | complain_overflow_signed, /* complain_on_overflow */ | |
1580 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1581 | "R_PPC64_TPREL16_DS", /* name */ | |
1582 | FALSE, /* partial_inplace */ | |
1583 | 0, /* src_mask */ | |
1584 | 0xfffc, /* dst_mask */ | |
1585 | FALSE), /* pcrel_offset */ | |
1586 | ||
1587 | /* Like TPREL16_DS, but no overflow. */ | |
1588 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1589 | 0, /* rightshift */ | |
1590 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1591 | 16, /* bitsize */ | |
1592 | FALSE, /* pc_relative */ | |
1593 | 0, /* bitpos */ | |
1594 | complain_overflow_dont, /* complain_on_overflow */ | |
1595 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1596 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1597 | FALSE, /* partial_inplace */ | |
1598 | 0, /* src_mask */ | |
1599 | 0xfffc, /* dst_mask */ | |
1600 | FALSE), /* pcrel_offset */ | |
1601 | ||
1602 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1603 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1604 | to the first entry relative to the TOC base (r2). */ | |
1605 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1606 | 0, /* rightshift */ | |
1607 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1608 | 16, /* bitsize */ | |
1609 | FALSE, /* pc_relative */ | |
1610 | 0, /* bitpos */ | |
1611 | complain_overflow_signed, /* complain_on_overflow */ | |
1612 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1613 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1614 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1615 | 0, /* src_mask */ |
1616 | 0xffff, /* dst_mask */ | |
b34976b6 | 1617 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1618 | |
411e1bfb AM |
1619 | /* Like GOT_TLSGD16, but no overflow. */ |
1620 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1621 | 0, /* rightshift */ |
1622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1623 | 16, /* bitsize */ | |
b34976b6 | 1624 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1625 | 0, /* bitpos */ |
1626 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1627 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1628 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1629 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1630 | 0, /* src_mask */ |
1631 | 0xffff, /* dst_mask */ | |
b34976b6 | 1632 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1633 | |
411e1bfb AM |
1634 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1635 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1636 | 16, /* rightshift */ |
1637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 16, /* bitsize */ | |
b34976b6 | 1639 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1640 | 0, /* bitpos */ |
1641 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1642 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1643 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1644 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1645 | 0, /* src_mask */ |
1646 | 0xffff, /* dst_mask */ | |
b34976b6 | 1647 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1648 | |
411e1bfb AM |
1649 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1650 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1651 | 16, /* rightshift */ |
1652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1653 | 16, /* bitsize */ | |
b34976b6 | 1654 | FALSE, /* pc_relative */ |
5bd4f169 | 1655 | 0, /* bitpos */ |
411e1bfb | 1656 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1657 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1658 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1659 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1660 | 0, /* src_mask */ |
1661 | 0xffff, /* dst_mask */ | |
b34976b6 | 1662 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1663 | |
411e1bfb AM |
1664 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1665 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1666 | first entry relative to the TOC base (r2). */ | |
1667 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1668 | 0, /* rightshift */ |
1669 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1670 | 16, /* bitsize */ | |
b34976b6 | 1671 | FALSE, /* pc_relative */ |
5bd4f169 | 1672 | 0, /* bitpos */ |
411e1bfb AM |
1673 | complain_overflow_signed, /* complain_on_overflow */ |
1674 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1675 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1676 | FALSE, /* partial_inplace */ |
d006db6c | 1677 | 0, /* src_mask */ |
411e1bfb | 1678 | 0xffff, /* dst_mask */ |
b34976b6 | 1679 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1680 | |
411e1bfb AM |
1681 | /* Like GOT_TLSLD16, but no overflow. */ |
1682 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1683 | 0, /* rightshift */ |
1684 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1685 | 16, /* bitsize */ | |
b34976b6 | 1686 | FALSE, /* pc_relative */ |
5bd4f169 | 1687 | 0, /* bitpos */ |
411e1bfb AM |
1688 | complain_overflow_dont, /* complain_on_overflow */ |
1689 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1690 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1691 | FALSE, /* partial_inplace */ |
d006db6c | 1692 | 0, /* src_mask */ |
411e1bfb | 1693 | 0xffff, /* dst_mask */ |
b34976b6 | 1694 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1695 | |
411e1bfb AM |
1696 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1697 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1698 | 16, /* rightshift */ | |
5bd4f169 AM |
1699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1700 | 16, /* bitsize */ | |
b34976b6 | 1701 | FALSE, /* pc_relative */ |
5bd4f169 | 1702 | 0, /* bitpos */ |
411e1bfb | 1703 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1704 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1705 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1706 | FALSE, /* partial_inplace */ |
d006db6c | 1707 | 0, /* src_mask */ |
411e1bfb | 1708 | 0xffff, /* dst_mask */ |
b34976b6 | 1709 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1710 | |
411e1bfb AM |
1711 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1712 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1713 | 16, /* rightshift */ | |
5bd4f169 AM |
1714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1715 | 16, /* bitsize */ | |
b34976b6 | 1716 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1717 | 0, /* bitpos */ |
1718 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1719 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1720 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1721 | FALSE, /* partial_inplace */ |
d006db6c | 1722 | 0, /* src_mask */ |
411e1bfb | 1723 | 0xffff, /* dst_mask */ |
b34976b6 | 1724 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1725 | |
411e1bfb AM |
1726 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1727 | the offset to the entry relative to the TOC base (r2). */ | |
1728 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1729 | 0, /* rightshift */ |
1730 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1731 | 16, /* bitsize */ | |
b34976b6 | 1732 | FALSE, /* pc_relative */ |
5bd4f169 | 1733 | 0, /* bitpos */ |
411e1bfb | 1734 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1735 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1736 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1737 | FALSE, /* partial_inplace */ |
d006db6c | 1738 | 0, /* src_mask */ |
5bd4f169 | 1739 | 0xfffc, /* dst_mask */ |
b34976b6 | 1740 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1741 | |
411e1bfb AM |
1742 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1743 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1744 | 0, /* rightshift */ |
c061c2d8 AM |
1745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1746 | 16, /* bitsize */ | |
b34976b6 | 1747 | FALSE, /* pc_relative */ |
5bd4f169 | 1748 | 0, /* bitpos */ |
411e1bfb AM |
1749 | complain_overflow_dont, /* complain_on_overflow */ |
1750 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1751 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1752 | FALSE, /* partial_inplace */ |
d006db6c | 1753 | 0, /* src_mask */ |
c061c2d8 | 1754 | 0xfffc, /* dst_mask */ |
b34976b6 | 1755 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1756 | |
411e1bfb AM |
1757 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1758 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1759 | 16, /* rightshift */ | |
5bd4f169 AM |
1760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1761 | 16, /* bitsize */ | |
b34976b6 | 1762 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1763 | 0, /* bitpos */ |
1764 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1765 | ppc64_elf_unhandled_reloc, /* special_function */ |
1766 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1767 | FALSE, /* partial_inplace */ |
d006db6c | 1768 | 0, /* src_mask */ |
411e1bfb | 1769 | 0xffff, /* dst_mask */ |
b34976b6 | 1770 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1771 | |
411e1bfb AM |
1772 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1773 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1774 | 16, /* rightshift */ | |
1775 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1776 | 16, /* bitsize */ | |
1777 | FALSE, /* pc_relative */ | |
1778 | 0, /* bitpos */ | |
1779 | complain_overflow_dont, /* complain_on_overflow */ | |
1780 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1781 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1782 | FALSE, /* partial_inplace */ | |
1783 | 0, /* src_mask */ | |
1784 | 0xffff, /* dst_mask */ | |
1785 | FALSE), /* pcrel_offset */ | |
1786 | ||
1787 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1788 | offset to the entry relative to the TOC base (r2). */ | |
1789 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1790 | 0, /* rightshift */ |
1791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1792 | 16, /* bitsize */ | |
b34976b6 | 1793 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1794 | 0, /* bitpos */ |
1795 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1796 | ppc64_elf_unhandled_reloc, /* special_function */ |
1797 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1798 | FALSE, /* partial_inplace */ |
d006db6c | 1799 | 0, /* src_mask */ |
ad8e1ba5 | 1800 | 0xfffc, /* dst_mask */ |
b34976b6 | 1801 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1802 | |
411e1bfb AM |
1803 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1804 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1805 | 0, /* rightshift */ |
1806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1807 | 16, /* bitsize */ | |
b34976b6 | 1808 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1809 | 0, /* bitpos */ |
1810 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1811 | ppc64_elf_unhandled_reloc, /* special_function */ |
1812 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1813 | FALSE, /* partial_inplace */ |
d006db6c | 1814 | 0, /* src_mask */ |
ad8e1ba5 | 1815 | 0xfffc, /* dst_mask */ |
b34976b6 | 1816 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1817 | |
411e1bfb AM |
1818 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1819 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1820 | 16, /* rightshift */ | |
5bd4f169 AM |
1821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1822 | 16, /* bitsize */ | |
b34976b6 | 1823 | FALSE, /* pc_relative */ |
5bd4f169 | 1824 | 0, /* bitpos */ |
411e1bfb | 1825 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1826 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1827 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1828 | FALSE, /* partial_inplace */ |
d006db6c | 1829 | 0, /* src_mask */ |
411e1bfb | 1830 | 0xffff, /* dst_mask */ |
b34976b6 | 1831 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1832 | |
411e1bfb AM |
1833 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1834 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1835 | 16, /* rightshift */ | |
5bd4f169 AM |
1836 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1837 | 16, /* bitsize */ | |
b34976b6 | 1838 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1839 | 0, /* bitpos */ |
1840 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1841 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1842 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1843 | FALSE, /* partial_inplace */ |
d006db6c | 1844 | 0, /* src_mask */ |
411e1bfb | 1845 | 0xffff, /* dst_mask */ |
b34976b6 | 1846 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1847 | |
1848 | /* GNU extension to record C++ vtable hierarchy. */ | |
1849 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1850 | 0, /* rightshift */ | |
1851 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1852 | 0, /* bitsize */ | |
b34976b6 | 1853 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1854 | 0, /* bitpos */ |
1855 | complain_overflow_dont, /* complain_on_overflow */ | |
1856 | NULL, /* special_function */ | |
1857 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1858 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1859 | 0, /* src_mask */ |
1860 | 0, /* dst_mask */ | |
b34976b6 | 1861 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1862 | |
1863 | /* GNU extension to record C++ vtable member usage. */ | |
1864 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1865 | 0, /* rightshift */ | |
1866 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1867 | 0, /* bitsize */ | |
b34976b6 | 1868 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1869 | 0, /* bitpos */ |
1870 | complain_overflow_dont, /* complain_on_overflow */ | |
1871 | NULL, /* special_function */ | |
1872 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1873 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1874 | 0, /* src_mask */ |
1875 | 0, /* dst_mask */ | |
b34976b6 | 1876 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1877 | }; |
1878 | ||
1879 | \f | |
1880 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1881 | be done. */ | |
1882 | ||
1883 | static void | |
4ce794b7 | 1884 | ppc_howto_init (void) |
5bd4f169 AM |
1885 | { |
1886 | unsigned int i, type; | |
1887 | ||
1888 | for (i = 0; | |
1889 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1890 | i++) | |
1891 | { | |
1892 | type = ppc64_elf_howto_raw[i].type; | |
1893 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1894 | / sizeof (ppc64_elf_howto_table[0]))); | |
1895 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | static reloc_howto_type * | |
4ce794b7 AM |
1900 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1901 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1902 | { |
411e1bfb | 1903 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1904 | |
1905 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1906 | /* Initialize howto table if needed. */ | |
1907 | ppc_howto_init (); | |
1908 | ||
4ce794b7 | 1909 | switch (code) |
5bd4f169 AM |
1910 | { |
1911 | default: | |
4ce794b7 | 1912 | return NULL; |
5bd4f169 | 1913 | |
411e1bfb AM |
1914 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1915 | break; | |
1916 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1917 | break; | |
1918 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1919 | break; | |
1920 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1921 | break; | |
1922 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1923 | break; | |
1924 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1925 | break; | |
1926 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1927 | break; |
411e1bfb | 1928 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1929 | break; |
411e1bfb | 1930 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1931 | break; |
411e1bfb | 1932 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1933 | break; |
411e1bfb | 1934 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1935 | break; |
411e1bfb | 1936 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1937 | break; |
411e1bfb | 1938 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1939 | break; |
411e1bfb | 1940 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1941 | break; |
411e1bfb | 1942 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1943 | break; |
411e1bfb | 1944 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1945 | break; |
411e1bfb | 1946 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1947 | break; |
411e1bfb | 1948 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1949 | break; |
411e1bfb | 1950 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1951 | break; |
411e1bfb | 1952 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1953 | break; |
411e1bfb | 1954 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1955 | break; |
411e1bfb | 1956 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1957 | break; |
411e1bfb | 1958 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1959 | break; |
411e1bfb | 1960 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1961 | break; |
411e1bfb | 1962 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1963 | break; |
411e1bfb | 1964 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1965 | break; |
411e1bfb | 1966 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1967 | break; |
411e1bfb | 1968 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1969 | break; |
411e1bfb | 1970 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1971 | break; |
411e1bfb | 1972 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1973 | break; |
411e1bfb | 1974 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1975 | break; |
411e1bfb | 1976 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1977 | break; |
411e1bfb | 1978 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1979 | break; |
411e1bfb | 1980 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1981 | break; |
411e1bfb | 1982 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1983 | break; |
411e1bfb | 1984 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1985 | break; |
411e1bfb | 1986 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1987 | break; |
411e1bfb | 1988 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1989 | break; |
411e1bfb | 1990 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1991 | break; |
411e1bfb | 1992 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1993 | break; |
411e1bfb | 1994 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1995 | break; |
411e1bfb | 1996 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1997 | break; |
411e1bfb | 1998 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1999 | break; |
411e1bfb | 2000 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2001 | break; |
411e1bfb | 2002 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2003 | break; |
411e1bfb | 2004 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2005 | break; |
411e1bfb | 2006 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2007 | break; |
411e1bfb | 2008 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2009 | break; |
411e1bfb | 2010 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2011 | break; |
411e1bfb | 2012 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2013 | break; |
411e1bfb | 2014 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2015 | break; |
411e1bfb | 2016 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2017 | break; |
411e1bfb | 2018 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2019 | break; |
411e1bfb | 2020 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2021 | break; |
411e1bfb | 2022 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2023 | break; |
411e1bfb | 2024 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2025 | break; |
411e1bfb | 2026 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2027 | break; |
411e1bfb | 2028 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2029 | break; |
411e1bfb | 2030 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2031 | break; |
411e1bfb | 2032 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2033 | break; |
411e1bfb | 2034 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2035 | break; |
411e1bfb | 2036 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2037 | break; |
411e1bfb | 2038 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2039 | break; |
411e1bfb | 2040 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2041 | break; |
411e1bfb | 2042 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2043 | break; |
411e1bfb | 2044 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2045 | break; |
411e1bfb AM |
2046 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2047 | break; | |
2048 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2049 | break; | |
2050 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2051 | break; | |
2052 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2053 | break; | |
2054 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2055 | break; | |
2056 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2057 | break; | |
2058 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2059 | break; | |
2060 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2061 | break; | |
2062 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2063 | break; | |
2064 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2065 | break; | |
2066 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2067 | break; | |
2068 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2069 | break; | |
2070 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2071 | break; | |
2072 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2073 | break; | |
2074 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2075 | break; | |
2076 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2077 | break; | |
2078 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2079 | break; | |
2080 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2081 | break; | |
2082 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2083 | break; | |
2084 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2085 | break; | |
2086 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2087 | break; | |
2088 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2089 | break; | |
2090 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2091 | break; | |
2092 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2093 | break; | |
2094 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2095 | break; | |
2096 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2097 | break; | |
2098 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2099 | break; | |
2100 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2101 | break; | |
2102 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2103 | break; | |
2104 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2105 | break; | |
2106 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2107 | break; | |
2108 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2109 | break; | |
2110 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2111 | break; | |
2112 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2113 | break; | |
2114 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2115 | break; |
2116 | } | |
2117 | ||
4ce794b7 | 2118 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2119 | }; |
2120 | ||
157090f7 AM |
2121 | static reloc_howto_type * |
2122 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2123 | const char *r_name) | |
2124 | { | |
2125 | unsigned int i; | |
2126 | ||
2127 | for (i = 0; | |
2128 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2129 | i++) | |
2130 | if (ppc64_elf_howto_raw[i].name != NULL | |
2131 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2132 | return &ppc64_elf_howto_raw[i]; | |
2133 | ||
2134 | return NULL; | |
2135 | } | |
2136 | ||
5bd4f169 AM |
2137 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2138 | ||
2139 | static void | |
4ce794b7 AM |
2140 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2141 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2142 | { |
65f38f15 AM |
2143 | unsigned int type; |
2144 | ||
ef60b7ff | 2145 | /* Initialize howto table if needed. */ |
5bd4f169 | 2146 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2147 | ppc_howto_init (); |
2148 | ||
65f38f15 | 2149 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2150 | if (type >= (sizeof (ppc64_elf_howto_table) |
2151 | / sizeof (ppc64_elf_howto_table[0]))) | |
2152 | { | |
2153 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2154 | abfd, (int) type); |
2155 | type = R_PPC64_NONE; | |
d0fb9a8d | 2156 | } |
65f38f15 | 2157 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2158 | } |
2159 | ||
04c9666a | 2160 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2161 | |
2162 | static bfd_reloc_status_type | |
4ce794b7 AM |
2163 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2164 | void *data, asection *input_section, | |
2165 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2166 | { |
805fc799 AM |
2167 | /* If this is a relocatable link (output_bfd test tells us), just |
2168 | call the generic function. Any adjustment will be done at final | |
2169 | link time. */ | |
2170 | if (output_bfd != NULL) | |
cedb70c5 | 2171 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2172 | input_section, output_bfd, error_message); |
2173 | ||
2174 | /* Adjust the addend for sign extension of the low 16 bits. | |
2175 | We won't actually be using the low 16 bits, so trashing them | |
2176 | doesn't matter. */ | |
2177 | reloc_entry->addend += 0x8000; | |
2178 | return bfd_reloc_continue; | |
2179 | } | |
5bd4f169 | 2180 | |
2441e016 AM |
2181 | static bfd_reloc_status_type |
2182 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2183 | void *data, asection *input_section, | |
2184 | bfd *output_bfd, char **error_message) | |
2185 | { | |
2186 | if (output_bfd != NULL) | |
2187 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2188 | input_section, output_bfd, error_message); | |
2189 | ||
699733f6 AM |
2190 | if (strcmp (symbol->section->name, ".opd") == 0 |
2191 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2192 | { |
2193 | bfd_vma dest = opd_entry_value (symbol->section, | |
2194 | symbol->value + reloc_entry->addend, | |
2195 | NULL, NULL); | |
2196 | if (dest != (bfd_vma) -1) | |
2197 | reloc_entry->addend = dest - (symbol->value | |
2198 | + symbol->section->output_section->vma | |
2199 | + symbol->section->output_offset); | |
2200 | } | |
2201 | return bfd_reloc_continue; | |
2202 | } | |
2203 | ||
805fc799 | 2204 | static bfd_reloc_status_type |
4ce794b7 AM |
2205 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2206 | void *data, asection *input_section, | |
2207 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2208 | { |
2209 | long insn; | |
04c9666a | 2210 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2211 | bfd_size_type octets; |
2212 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2213 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2214 | |
2215 | /* If this is a relocatable link (output_bfd test tells us), just | |
2216 | call the generic function. Any adjustment will be done at final | |
2217 | link time. */ | |
5bd4f169 | 2218 | if (output_bfd != NULL) |
cedb70c5 | 2219 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2220 | input_section, output_bfd, error_message); |
2221 | ||
2222 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2223 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2224 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2225 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2226 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2227 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2228 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2229 | |
2230 | if (is_power4) | |
5bd4f169 | 2231 | { |
805fc799 AM |
2232 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2233 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2234 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2235 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2236 | insn |= 0x02 << 21; | |
2237 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2238 | insn |= 0x08 << 21; | |
2239 | else | |
2441e016 | 2240 | goto out; |
5bd4f169 | 2241 | } |
805fc799 AM |
2242 | else |
2243 | { | |
2244 | bfd_vma target = 0; | |
2245 | bfd_vma from; | |
5bd4f169 | 2246 | |
805fc799 AM |
2247 | if (!bfd_is_com_section (symbol->section)) |
2248 | target = symbol->value; | |
2249 | target += symbol->section->output_section->vma; | |
2250 | target += symbol->section->output_offset; | |
2251 | target += reloc_entry->addend; | |
5bd4f169 | 2252 | |
805fc799 AM |
2253 | from = (reloc_entry->address |
2254 | + input_section->output_offset | |
2255 | + input_section->output_section->vma); | |
5bd4f169 | 2256 | |
805fc799 AM |
2257 | /* Invert 'y' bit if not the default. */ |
2258 | if ((bfd_signed_vma) (target - from) < 0) | |
2259 | insn ^= 0x01 << 21; | |
2260 | } | |
4ce794b7 | 2261 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2262 | out: |
2263 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2264 | input_section, output_bfd, error_message); | |
805fc799 | 2265 | } |
5bd4f169 | 2266 | |
805fc799 | 2267 | static bfd_reloc_status_type |
4ce794b7 AM |
2268 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2269 | void *data, asection *input_section, | |
2270 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2271 | { |
2272 | /* If this is a relocatable link (output_bfd test tells us), just | |
2273 | call the generic function. Any adjustment will be done at final | |
2274 | link time. */ | |
2275 | if (output_bfd != NULL) | |
cedb70c5 | 2276 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2277 | input_section, output_bfd, error_message); |
5bd4f169 | 2278 | |
805fc799 AM |
2279 | /* Subtract the symbol section base address. */ |
2280 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2281 | return bfd_reloc_continue; |
2282 | } | |
2283 | ||
805fc799 | 2284 | static bfd_reloc_status_type |
4ce794b7 AM |
2285 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2286 | void *data, asection *input_section, | |
2287 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2288 | { |
2289 | /* If this is a relocatable link (output_bfd test tells us), just | |
2290 | call the generic function. Any adjustment will be done at final | |
2291 | link time. */ | |
2292 | if (output_bfd != NULL) | |
cedb70c5 | 2293 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2294 | input_section, output_bfd, error_message); |
2295 | ||
2296 | /* Subtract the symbol section base address. */ | |
2297 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2298 | ||
2299 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2300 | reloc_entry->addend += 0x8000; | |
2301 | return bfd_reloc_continue; | |
2302 | } | |
2303 | ||
2304 | static bfd_reloc_status_type | |
4ce794b7 AM |
2305 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2306 | void *data, asection *input_section, | |
2307 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2308 | { |
2309 | bfd_vma TOCstart; | |
2310 | ||
2311 | /* If this is a relocatable link (output_bfd test tells us), just | |
2312 | call the generic function. Any adjustment will be done at final | |
2313 | link time. */ | |
2314 | if (output_bfd != NULL) | |
cedb70c5 | 2315 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2316 | input_section, output_bfd, error_message); |
2317 | ||
2318 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2319 | if (TOCstart == 0) | |
2320 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2321 | ||
2322 | /* Subtract the TOC base address. */ | |
2323 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2324 | return bfd_reloc_continue; | |
2325 | } | |
2326 | ||
2327 | static bfd_reloc_status_type | |
4ce794b7 AM |
2328 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2329 | void *data, asection *input_section, | |
2330 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2331 | { |
2332 | bfd_vma TOCstart; | |
2333 | ||
2334 | /* If this is a relocatable link (output_bfd test tells us), just | |
2335 | call the generic function. Any adjustment will be done at final | |
2336 | link time. */ | |
2337 | if (output_bfd != NULL) | |
cedb70c5 | 2338 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2339 | input_section, output_bfd, error_message); |
2340 | ||
2341 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2342 | if (TOCstart == 0) | |
2343 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2344 | ||
2345 | /* Subtract the TOC base address. */ | |
2346 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2347 | ||
2348 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2349 | reloc_entry->addend += 0x8000; | |
2350 | return bfd_reloc_continue; | |
2351 | } | |
2352 | ||
2353 | static bfd_reloc_status_type | |
4ce794b7 AM |
2354 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2355 | void *data, asection *input_section, | |
2356 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2357 | { |
2358 | bfd_vma TOCstart; | |
2359 | bfd_size_type octets; | |
2360 | ||
2361 | /* If this is a relocatable link (output_bfd test tells us), just | |
2362 | call the generic function. Any adjustment will be done at final | |
2363 | link time. */ | |
2364 | if (output_bfd != NULL) | |
cedb70c5 | 2365 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2366 | input_section, output_bfd, error_message); |
2367 | ||
2368 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2369 | if (TOCstart == 0) | |
2370 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2371 | ||
2372 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2373 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2374 | return bfd_reloc_ok; | |
2375 | } | |
2376 | ||
2377 | static bfd_reloc_status_type | |
4ce794b7 AM |
2378 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2379 | void *data, asection *input_section, | |
2380 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2381 | { |
2382 | /* If this is a relocatable link (output_bfd test tells us), just | |
2383 | call the generic function. Any adjustment will be done at final | |
2384 | link time. */ | |
2385 | if (output_bfd != NULL) | |
cedb70c5 | 2386 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2387 | input_section, output_bfd, error_message); |
2388 | ||
2389 | if (error_message != NULL) | |
2390 | { | |
2391 | static char buf[60]; | |
2392 | sprintf (buf, "generic linker can't handle %s", | |
2393 | reloc_entry->howto->name); | |
2394 | *error_message = buf; | |
2395 | } | |
2396 | return bfd_reloc_dangerous; | |
2397 | } | |
2398 | ||
e717da7e AM |
2399 | struct ppc64_elf_obj_tdata |
2400 | { | |
2401 | struct elf_obj_tdata elf; | |
2402 | ||
2403 | /* Shortcuts to dynamic linker sections. */ | |
2404 | asection *got; | |
2405 | asection *relgot; | |
2406 | ||
b3fac117 AM |
2407 | /* Used during garbage collection. We attach global symbols defined |
2408 | on removed .opd entries to this section so that the sym is removed. */ | |
2409 | asection *deleted_section; | |
81688140 | 2410 | |
e717da7e AM |
2411 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2412 | sections means we potentially need one of these for each input bfd. */ | |
2413 | union { | |
2414 | bfd_signed_vma refcount; | |
2415 | bfd_vma offset; | |
2416 | } tlsld_got; | |
8860955f AM |
2417 | |
2418 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2419 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2420 | }; |
2421 | ||
2422 | #define ppc64_elf_tdata(bfd) \ | |
2423 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2424 | ||
2425 | #define ppc64_tlsld_got(bfd) \ | |
2426 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2427 | ||
0c8d6e5c AM |
2428 | #define is_ppc64_elf(bfd) \ |
2429 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
2430 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
2431 | ||
e717da7e AM |
2432 | /* Override the generic function because we store some extras. */ |
2433 | ||
2434 | static bfd_boolean | |
2435 | ppc64_elf_mkobject (bfd *abfd) | |
2436 | { | |
0ffa91dd NC |
2437 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
2438 | PPC64_ELF_TDATA); | |
e717da7e AM |
2439 | } |
2440 | ||
feee612b AM |
2441 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2442 | default is 32 bit. */ | |
2443 | ||
b34976b6 | 2444 | static bfd_boolean |
4ce794b7 | 2445 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2446 | { |
2447 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2448 | { | |
2449 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2450 | ||
2451 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2452 | { | |
2453 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2454 | abfd->arch_info = abfd->arch_info->next; | |
2455 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2456 | } | |
2457 | } | |
b34976b6 | 2458 | return TRUE; |
feee612b AM |
2459 | } |
2460 | ||
d37c89e5 AM |
2461 | /* Support for core dump NOTE sections. */ |
2462 | ||
2463 | static bfd_boolean | |
2464 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2465 | { | |
eea6121a | 2466 | size_t offset, size; |
d37c89e5 AM |
2467 | |
2468 | if (note->descsz != 504) | |
2469 | return FALSE; | |
2470 | ||
2471 | /* pr_cursig */ | |
2472 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2473 | ||
2474 | /* pr_pid */ | |
2475 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2476 | ||
2477 | /* pr_reg */ | |
2478 | offset = 112; | |
eea6121a | 2479 | size = 384; |
d37c89e5 AM |
2480 | |
2481 | /* Make a ".reg/999" section. */ | |
2482 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2483 | size, note->descpos + offset); |
d37c89e5 AM |
2484 | } |
2485 | ||
2486 | static bfd_boolean | |
2487 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2488 | { | |
2489 | if (note->descsz != 136) | |
2490 | return FALSE; | |
2491 | ||
2492 | elf_tdata (abfd)->core_program | |
2493 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2494 | elf_tdata (abfd)->core_command | |
2495 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2496 | ||
2497 | return TRUE; | |
2498 | } | |
2499 | ||
183e98be AM |
2500 | static char * |
2501 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2502 | ...) | |
2503 | { | |
2504 | switch (note_type) | |
2505 | { | |
2506 | default: | |
2507 | return NULL; | |
2508 | ||
2509 | case NT_PRPSINFO: | |
2510 | { | |
2511 | char data[136]; | |
2512 | va_list ap; | |
2513 | ||
2514 | va_start (ap, note_type); | |
2515 | memset (data, 0, 40); | |
2516 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2517 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2518 | va_end (ap); | |
2519 | return elfcore_write_note (abfd, buf, bufsiz, | |
2520 | "CORE", note_type, data, sizeof (data)); | |
2521 | } | |
2522 | ||
2523 | case NT_PRSTATUS: | |
2524 | { | |
2525 | char data[504]; | |
2526 | va_list ap; | |
2527 | long pid; | |
2528 | int cursig; | |
2529 | const void *greg; | |
2530 | ||
2531 | va_start (ap, note_type); | |
2532 | memset (data, 0, 112); | |
2533 | pid = va_arg (ap, long); | |
2534 | bfd_put_32 (abfd, pid, data + 32); | |
2535 | cursig = va_arg (ap, int); | |
2536 | bfd_put_16 (abfd, cursig, data + 12); | |
2537 | greg = va_arg (ap, const void *); | |
2538 | memcpy (data + 112, greg, 384); | |
2539 | memset (data + 496, 0, 8); | |
2540 | va_end (ap); | |
2541 | return elfcore_write_note (abfd, buf, bufsiz, | |
2542 | "CORE", note_type, data, sizeof (data)); | |
2543 | } | |
2544 | } | |
2545 | } | |
2546 | ||
5bd4f169 AM |
2547 | /* Merge backend specific data from an object file to the output |
2548 | object file when linking. */ | |
2f6d9989 | 2549 | |
b34976b6 | 2550 | static bfd_boolean |
4ce794b7 | 2551 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2552 | { |
5bd4f169 AM |
2553 | /* Check if we have the same endianess. */ |
2554 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2555 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2556 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2557 | { | |
2558 | const char *msg; | |
2559 | ||
2560 | if (bfd_big_endian (ibfd)) | |
d003868e | 2561 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2562 | "and target is little endian"); |
5bd4f169 | 2563 | else |
d003868e | 2564 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2565 | "and target is big endian"); |
5bd4f169 | 2566 | |
d003868e | 2567 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2568 | |
2569 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2570 | return FALSE; |
5bd4f169 AM |
2571 | } |
2572 | ||
b34976b6 | 2573 | return TRUE; |
5bd4f169 | 2574 | } |
f0abc2a1 | 2575 | |
5d35169e AM |
2576 | /* Add extra PPC sections. */ |
2577 | ||
b35d266b | 2578 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2579 | { |
0112cd26 NC |
2580 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2581 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2582 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2583 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2584 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2585 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2586 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2587 | }; |
2588 | ||
7c8fe5c4 AM |
2589 | enum _ppc64_sec_type { |
2590 | sec_normal = 0, | |
2591 | sec_opd = 1, | |
2592 | sec_toc = 2 | |
2593 | }; | |
2594 | ||
f0abc2a1 AM |
2595 | struct _ppc64_elf_section_data |
2596 | { | |
2597 | struct bfd_elf_section_data elf; | |
411e1bfb | 2598 | |
f0abc2a1 AM |
2599 | union |
2600 | { | |
74f0fb50 AM |
2601 | /* An array with one entry for each opd function descriptor. */ |
2602 | struct _opd_sec_data | |
2603 | { | |
2604 | /* Points to the function code section for local opd entries. */ | |
2605 | asection **func_sec; | |
2606 | ||
2607 | /* After editing .opd, adjust references to opd local syms. */ | |
2608 | long *adjust; | |
2609 | } opd; | |
7c8fe5c4 AM |
2610 | |
2611 | /* An array for toc sections, indexed by offset/8. | |
2612 | Specifies the relocation symbol index used at a given toc offset. */ | |
2613 | unsigned *t_symndx; | |
2614 | } u; | |
2615 | ||
2616 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2617 | |
7c8fe5c4 AM |
2618 | /* Flag set when small branches are detected. Used to |
2619 | select suitable defaults for the stub group size. */ | |
2620 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2621 | }; |
2622 | ||
2623 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2624 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2625 | |
2626 | static bfd_boolean | |
4ce794b7 | 2627 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2628 | { |
f592407e AM |
2629 | if (!sec->used_by_bfd) |
2630 | { | |
2631 | struct _ppc64_elf_section_data *sdata; | |
2632 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2633 | |
f592407e AM |
2634 | sdata = bfd_zalloc (abfd, amt); |
2635 | if (sdata == NULL) | |
2636 | return FALSE; | |
2637 | sec->used_by_bfd = sdata; | |
2638 | } | |
f0abc2a1 AM |
2639 | |
2640 | return _bfd_elf_new_section_hook (abfd, sec); | |
2641 | } | |
4025353c | 2642 | |
74f0fb50 | 2643 | static struct _opd_sec_data * |
4025353c AM |
2644 | get_opd_info (asection * sec) |
2645 | { | |
2646 | if (sec != NULL | |
2647 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2648 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2649 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2650 | return NULL; |
2651 | } | |
90e3cdf2 JJ |
2652 | \f |
2653 | /* Parameters for the qsort hook. */ | |
2654 | static asection *synthetic_opd; | |
2655 | static bfd_boolean synthetic_relocatable; | |
2656 | ||
699733f6 | 2657 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2658 | |
2659 | static int | |
2660 | compare_symbols (const void *ap, const void *bp) | |
2661 | { | |
2662 | const asymbol *a = * (const asymbol **) ap; | |
2663 | const asymbol *b = * (const asymbol **) bp; | |
2664 | ||
699733f6 AM |
2665 | /* Section symbols first. */ |
2666 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2667 | return -1; |
699733f6 | 2668 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2669 | return 1; |
2670 | ||
699733f6 | 2671 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2672 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2673 | return -1; | |
2674 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2675 | return 1; | |
2676 | ||
699733f6 | 2677 | /* then other code symbols. */ |
90e3cdf2 JJ |
2678 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2679 | == (SEC_CODE | SEC_ALLOC) | |
2680 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2681 | != (SEC_CODE | SEC_ALLOC)) | |
2682 | return -1; | |
2683 | ||
2684 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2685 | != (SEC_CODE | SEC_ALLOC) | |
2686 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2687 | == (SEC_CODE | SEC_ALLOC)) | |
2688 | return 1; | |
2689 | ||
2690 | if (synthetic_relocatable) | |
2691 | { | |
2692 | if (a->section->id < b->section->id) | |
2693 | return -1; | |
2694 | ||
2695 | if (a->section->id > b->section->id) | |
2696 | return 1; | |
2697 | } | |
2698 | ||
2699 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2700 | return -1; | |
2701 | ||
2702 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2703 | return 1; | |
2704 | ||
4d35a0aa AM |
2705 | /* For syms with the same value, prefer strong dynamic global function |
2706 | syms over other syms. */ | |
2707 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2708 | return -1; | |
2709 | ||
2710 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2711 | return 1; | |
2712 | ||
2713 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2714 | return -1; | |
2715 | ||
2716 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2717 | return 1; | |
2718 | ||
2719 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2720 | return -1; | |
2721 | ||
2722 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2723 | return 1; | |
2724 | ||
2725 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2726 | return -1; | |
2727 | ||
2728 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2729 | return 1; | |
2730 | ||
90e3cdf2 JJ |
2731 | return 0; |
2732 | } | |
2733 | ||
699733f6 | 2734 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2735 | |
699733f6 AM |
2736 | static asymbol * |
2737 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2738 | { |
699733f6 | 2739 | long mid; |
90e3cdf2 | 2740 | |
699733f6 AM |
2741 | if (id == -1) |
2742 | { | |
2743 | while (lo < hi) | |
2744 | { | |
2745 | mid = (lo + hi) >> 1; | |
2746 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2747 | lo = mid + 1; | |
2748 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2749 | hi = mid; | |
2750 | else | |
2751 | return syms[mid]; | |
2752 | } | |
2753 | } | |
2754 | else | |
2755 | { | |
2756 | while (lo < hi) | |
2757 | { | |
2758 | mid = (lo + hi) >> 1; | |
2759 | if (syms[mid]->section->id < id) | |
2760 | lo = mid + 1; | |
2761 | else if (syms[mid]->section->id > id) | |
2762 | hi = mid; | |
2763 | else if (syms[mid]->value < value) | |
2764 | lo = mid + 1; | |
2765 | else if (syms[mid]->value > value) | |
2766 | hi = mid; | |
2767 | else | |
2768 | return syms[mid]; | |
2769 | } | |
2770 | } | |
2771 | return NULL; | |
90e3cdf2 JJ |
2772 | } |
2773 | ||
468392fb AM |
2774 | static bfd_boolean |
2775 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2776 | { | |
2777 | bfd_vma vma = *(bfd_vma *) ptr; | |
2778 | return ((section->flags & SEC_ALLOC) != 0 | |
2779 | && section->vma <= vma | |
2780 | && vma < section->vma + section->size); | |
2781 | } | |
2782 | ||
699733f6 | 2783 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2784 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2785 | |
2786 | static long | |
a7535cf3 AM |
2787 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2788 | long static_count, asymbol **static_syms, | |
2789 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2790 | asymbol **ret) |
90e3cdf2 JJ |
2791 | { |
2792 | asymbol *s; | |
699733f6 AM |
2793 | long i; |
2794 | long count; | |
90e3cdf2 | 2795 | char *names; |
a7535cf3 | 2796 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2797 | asection *opd; |
90e3cdf2 | 2798 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2799 | asymbol **syms; |
90e3cdf2 JJ |
2800 | |
2801 | *ret = NULL; | |
2802 | ||
2803 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2804 | if (opd == NULL) | |
2805 | return 0; | |
2806 | ||
a7535cf3 | 2807 | symcount = static_count; |
c9727e01 | 2808 | if (!relocatable) |
a7535cf3 | 2809 | symcount += dyn_count; |
90e3cdf2 | 2810 | if (symcount == 0) |
c9727e01 | 2811 | return 0; |
90e3cdf2 | 2812 | |
a7535cf3 AM |
2813 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2814 | if (syms == NULL) | |
7356fed5 | 2815 | return -1; |
a7535cf3 AM |
2816 | |
2817 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2818 | { | |
2819 | /* Use both symbol tables. */ | |
2820 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2821 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2822 | } | |
2823 | else if (!relocatable && static_count == 0) | |
2824 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2825 | else | |
2826 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2827 | ||
90e3cdf2 JJ |
2828 | synthetic_opd = opd; |
2829 | synthetic_relocatable = relocatable; | |
595da8c5 | 2830 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2831 | |
c9727e01 AM |
2832 | if (!relocatable && symcount > 1) |
2833 | { | |
2834 | long j; | |
2835 | /* Trim duplicate syms, since we may have merged the normal and | |
2836 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2837 | different values, so trim any with the same value. */ |
c9727e01 AM |
2838 | for (i = 1, j = 1; i < symcount; ++i) |
2839 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2840 | != syms[i]->value + syms[i]->section->vma) | |
2841 | syms[j++] = syms[i]; | |
2842 | symcount = j; | |
2843 | } | |
2844 | ||
699733f6 AM |
2845 | i = 0; |
2846 | if (syms[i]->section == opd) | |
2847 | ++i; | |
2848 | codesecsym = i; | |
90e3cdf2 | 2849 | |
699733f6 AM |
2850 | for (; i < symcount; ++i) |
2851 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2852 | != (SEC_CODE | SEC_ALLOC)) | |
2853 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2854 | break; | |
2855 | codesecsymend = i; | |
90e3cdf2 | 2856 | |
699733f6 AM |
2857 | for (; i < symcount; ++i) |
2858 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2859 | break; | |
2860 | secsymend = i; | |
90e3cdf2 | 2861 | |
699733f6 AM |
2862 | for (; i < symcount; ++i) |
2863 | if (syms[i]->section != opd) | |
2864 | break; | |
2865 | opdsymend = i; | |
90e3cdf2 | 2866 | |
699733f6 AM |
2867 | for (; i < symcount; ++i) |
2868 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2869 | != (SEC_CODE | SEC_ALLOC)) | |
2870 | break; | |
2871 | symcount = i; | |
2872 | ||
c9727e01 | 2873 | count = 0; |
90e3cdf2 | 2874 | |
699733f6 | 2875 | if (relocatable) |
90e3cdf2 | 2876 | { |
699733f6 AM |
2877 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2878 | arelent *r; | |
2879 | size_t size; | |
2880 | long relcount; | |
90e3cdf2 | 2881 | |
468392fb AM |
2882 | if (opdsymend == secsymend) |
2883 | goto done; | |
2884 | ||
699733f6 | 2885 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2886 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2887 | if (relcount == 0) |
c9727e01 | 2888 | goto done; |
90e3cdf2 | 2889 | |
7356fed5 AM |
2890 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2891 | { | |
2892 | count = -1; | |
2893 | goto done; | |
2894 | } | |
2895 | ||
699733f6 | 2896 | size = 0; |
595da8c5 | 2897 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2898 | { |
2899 | asymbol *sym; | |
90e3cdf2 | 2900 | |
595da8c5 | 2901 | while (r < opd->relocation + relcount |
699733f6 AM |
2902 | && r->address < syms[i]->value + opd->vma) |
2903 | ++r; | |
90e3cdf2 | 2904 | |
595da8c5 | 2905 | if (r == opd->relocation + relcount) |
699733f6 | 2906 | break; |
90e3cdf2 | 2907 | |
699733f6 AM |
2908 | if (r->address != syms[i]->value + opd->vma) |
2909 | continue; | |
90e3cdf2 | 2910 | |
699733f6 AM |
2911 | if (r->howto->type != R_PPC64_ADDR64) |
2912 | continue; | |
90e3cdf2 | 2913 | |
699733f6 AM |
2914 | sym = *r->sym_ptr_ptr; |
2915 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2916 | sym->section->id, sym->value + r->addend)) | |
2917 | { | |
2918 | ++count; | |
2919 | size += sizeof (asymbol); | |
2920 | size += strlen (syms[i]->name) + 2; | |
2921 | } | |
2922 | } | |
90e3cdf2 | 2923 | |
699733f6 AM |
2924 | s = *ret = bfd_malloc (size); |
2925 | if (s == NULL) | |
2926 | { | |
7356fed5 | 2927 | count = -1; |
c9727e01 | 2928 | goto done; |
699733f6 | 2929 | } |
90e3cdf2 | 2930 | |
699733f6 | 2931 | names = (char *) (s + count); |
90e3cdf2 | 2932 | |
595da8c5 | 2933 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2934 | { |
699733f6 | 2935 | asymbol *sym; |
90e3cdf2 | 2936 | |
595da8c5 | 2937 | while (r < opd->relocation + relcount |
699733f6 AM |
2938 | && r->address < syms[i]->value + opd->vma) |
2939 | ++r; | |
90e3cdf2 | 2940 | |
595da8c5 | 2941 | if (r == opd->relocation + relcount) |
699733f6 AM |
2942 | break; |
2943 | ||
2944 | if (r->address != syms[i]->value + opd->vma) | |
2945 | continue; | |
2946 | ||
2947 | if (r->howto->type != R_PPC64_ADDR64) | |
2948 | continue; | |
90e3cdf2 | 2949 | |
699733f6 AM |
2950 | sym = *r->sym_ptr_ptr; |
2951 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2952 | sym->section->id, sym->value + r->addend)) | |
2953 | { | |
2954 | size_t len; | |
2955 | ||
2956 | *s = *syms[i]; | |
6ba2a415 | 2957 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2958 | s->section = sym->section; |
2959 | s->value = sym->value + r->addend; | |
2960 | s->name = names; | |
2961 | *names++ = '.'; | |
2962 | len = strlen (syms[i]->name); | |
2963 | memcpy (names, syms[i]->name, len + 1); | |
2964 | names += len + 1; | |
6f610d07 UW |
2965 | /* Have udata.p point back to the original symbol this |
2966 | synthetic symbol was derived from. */ | |
2967 | s->udata.p = syms[i]; | |
699733f6 AM |
2968 | s++; |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | else | |
90e3cdf2 | 2973 | { |
468392fb | 2974 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
2975 | bfd_byte *contents; |
2976 | size_t size; | |
468392fb AM |
2977 | long plt_count = 0; |
2978 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
2979 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2980 | arelent *p; | |
90e3cdf2 | 2981 | |
699733f6 AM |
2982 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2983 | { | |
2984 | if (contents) | |
c9727e01 AM |
2985 | { |
2986 | free_contents_and_exit: | |
2987 | free (contents); | |
2988 | } | |
7356fed5 | 2989 | count = -1; |
c9727e01 | 2990 | goto done; |
699733f6 | 2991 | } |
90e3cdf2 | 2992 | |
699733f6 AM |
2993 | size = 0; |
2994 | for (i = secsymend; i < opdsymend; ++i) | |
2995 | { | |
2996 | bfd_vma ent; | |
90e3cdf2 | 2997 | |
699733f6 AM |
2998 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2999 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3000 | { | |
3001 | ++count; | |
3002 | size += sizeof (asymbol); | |
3003 | size += strlen (syms[i]->name) + 2; | |
3004 | } | |
3005 | } | |
90e3cdf2 | 3006 | |
468392fb | 3007 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3008 | if (dyn_count != 0 |
3009 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3010 | { |
3011 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3012 | size_t extdynsize; | |
3013 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3014 | ||
3015 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3016 | goto free_contents_and_exit; | |
3017 | ||
3018 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3019 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3020 | ||
3021 | extdyn = dynbuf; | |
3022 | extdynend = extdyn + dynamic->size; | |
3023 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3024 | { | |
3025 | Elf_Internal_Dyn dyn; | |
3026 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3027 | ||
3028 | if (dyn.d_tag == DT_NULL) | |
3029 | break; | |
3030 | ||
3031 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3032 | { | |
3033 | /* The first glink stub starts at offset 32; see comment in | |
3034 | ppc64_elf_finish_dynamic_sections. */ | |
3035 | glink_vma = dyn.d_un.d_val + 32; | |
3036 | /* The .glink section usually does not survive the final | |
3037 | link; search for the section (usually .text) where the | |
3038 | glink stubs now reside. */ | |
3039 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3040 | &glink_vma); | |
3041 | break; | |
3042 | } | |
3043 | } | |
3044 | ||
3045 | free (dynbuf); | |
3046 | } | |
3047 | ||
3048 | if (glink != NULL) | |
3049 | { | |
3050 | /* Determine __glink trampoline by reading the relative branch | |
3051 | from the first glink stub. */ | |
3052 | bfd_byte buf[4]; | |
3053 | if (bfd_get_section_contents (abfd, glink, buf, | |
3054 | glink_vma + 4 - glink->vma, 4)) | |
3055 | { | |
3056 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3057 | insn ^= B_DOT; | |
3058 | if ((insn & ~0x3fffffc) == 0) | |
3059 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3060 | } | |
3061 | ||
3062 | if (resolv_vma) | |
3063 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3064 | |
066ee829 AM |
3065 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3066 | if (relplt != NULL) | |
3067 | { | |
3068 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3069 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3070 | goto free_contents_and_exit; | |
468392fb | 3071 | |
066ee829 AM |
3072 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3073 | size += plt_count * sizeof (asymbol); | |
468392fb | 3074 | |
066ee829 AM |
3075 | p = relplt->relocation; |
3076 | for (i = 0; i < plt_count; i++, p++) | |
3077 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3078 | } | |
468392fb AM |
3079 | } |
3080 | ||
699733f6 AM |
3081 | s = *ret = bfd_malloc (size); |
3082 | if (s == NULL) | |
7356fed5 | 3083 | goto free_contents_and_exit; |
90e3cdf2 | 3084 | |
468392fb | 3085 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3086 | |
699733f6 | 3087 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3088 | { |
699733f6 | 3089 | bfd_vma ent; |
90e3cdf2 | 3090 | |
699733f6 AM |
3091 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3092 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3093 | { |
c9727e01 | 3094 | long lo, hi; |
699733f6 | 3095 | size_t len; |
c9727e01 | 3096 | asection *sec = abfd->sections; |
90e3cdf2 | 3097 | |
699733f6 AM |
3098 | *s = *syms[i]; |
3099 | lo = codesecsym; | |
3100 | hi = codesecsymend; | |
3101 | while (lo < hi) | |
3102 | { | |
c9727e01 | 3103 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3104 | if (syms[mid]->section->vma < ent) |
3105 | lo = mid + 1; | |
3106 | else if (syms[mid]->section->vma > ent) | |
3107 | hi = mid; | |
3108 | else | |
c9727e01 AM |
3109 | { |
3110 | sec = syms[mid]->section; | |
3111 | break; | |
3112 | } | |
699733f6 AM |
3113 | } |
3114 | ||
c9727e01 | 3115 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3116 | sec = syms[lo - 1]->section; |
699733f6 AM |
3117 | |
3118 | for (; sec != NULL; sec = sec->next) | |
3119 | { | |
3120 | if (sec->vma > ent) | |
3121 | break; | |
3122 | if ((sec->flags & SEC_ALLOC) == 0 | |
3123 | || (sec->flags & SEC_LOAD) == 0) | |
3124 | break; | |
3125 | if ((sec->flags & SEC_CODE) != 0) | |
3126 | s->section = sec; | |
3127 | } | |
6ba2a415 | 3128 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3129 | s->value = ent - s->section->vma; |
3130 | s->name = names; | |
3131 | *names++ = '.'; | |
3132 | len = strlen (syms[i]->name); | |
3133 | memcpy (names, syms[i]->name, len + 1); | |
3134 | names += len + 1; | |
6f610d07 UW |
3135 | /* Have udata.p point back to the original symbol this |
3136 | synthetic symbol was derived from. */ | |
3137 | s->udata.p = syms[i]; | |
699733f6 | 3138 | s++; |
90e3cdf2 | 3139 | } |
90e3cdf2 | 3140 | } |
699733f6 | 3141 | free (contents); |
468392fb AM |
3142 | |
3143 | if (glink != NULL && relplt != NULL) | |
3144 | { | |
3145 | if (resolv_vma) | |
3146 | { | |
3147 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3148 | memset (s, 0, sizeof *s); |
468392fb | 3149 | s->the_bfd = abfd; |
6ba2a415 | 3150 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3151 | s->section = glink; |
3152 | s->value = resolv_vma - glink->vma; | |
3153 | s->name = names; | |
3154 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3155 | names += sizeof ("__glink_PLTresolve"); | |
3156 | s++; | |
3157 | count++; | |
3158 | } | |
3159 | ||
3160 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3161 | stub rather than on the glink branch table entry. The | |
3162 | objdump disassembler would then use a sensible symbol | |
3163 | name on plt calls. The difficulty in doing so is | |
3164 | a) finding the stubs, and, | |
3165 | b) matching stubs against plt entries, and, | |
3166 | c) there can be multiple stubs for a given plt entry. | |
3167 | ||
3168 | Solving (a) could be done by code scanning, but older | |
3169 | ppc64 binaries used different stubs to current code. | |
3170 | (b) is the tricky one since you need to known the toc | |
3171 | pointer for at least one function that uses a pic stub to | |
3172 | be able to calculate the plt address referenced. | |
3173 | (c) means gdb would need to set multiple breakpoints (or | |
3174 | find the glink branch itself) when setting breakpoints | |
3175 | for pending shared library loads. */ | |
3176 | p = relplt->relocation; | |
3177 | for (i = 0; i < plt_count; i++, p++) | |
3178 | { | |
3179 | size_t len; | |
3180 | ||
3181 | *s = **p->sym_ptr_ptr; | |
3182 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3183 | we are defining a symbol, ensure one of them is set. */ | |
3184 | if ((s->flags & BSF_LOCAL) == 0) | |
3185 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3186 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3187 | s->section = glink; |
3188 | s->value = glink_vma - glink->vma; | |
3189 | s->name = names; | |
3190 | s->udata.p = NULL; | |
3191 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3192 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3193 | names += len; | |
3194 | memcpy (names, "@plt", sizeof ("@plt")); | |
3195 | names += sizeof ("@plt"); | |
3196 | s++; | |
3197 | glink_vma += 8; | |
3198 | if (i >= 0x8000) | |
3199 | glink_vma += 4; | |
3200 | } | |
3201 | count += plt_count; | |
3202 | } | |
90e3cdf2 JJ |
3203 | } |
3204 | ||
c9727e01 | 3205 | done: |
a7535cf3 | 3206 | free (syms); |
90e3cdf2 JJ |
3207 | return count; |
3208 | } | |
5bd4f169 | 3209 | \f |
65f38f15 AM |
3210 | /* The following functions are specific to the ELF linker, while |
3211 | functions above are used generally. Those named ppc64_elf_* are | |
3212 | called by the main ELF linker code. They appear in this file more | |
3213 | or less in the order in which they are called. eg. | |
3214 | ppc64_elf_check_relocs is called early in the link process, | |
3215 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3216 | called. |
3217 | ||
3218 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3219 | functions have both a function code symbol and a function descriptor | |
3220 | symbol. A call to foo in a relocatable object file looks like: | |
3221 | ||
3222 | . .text | |
3223 | . x: | |
3224 | . bl .foo | |
3225 | . nop | |
3226 | ||
3227 | The function definition in another object file might be: | |
3228 | ||
3229 | . .section .opd | |
3230 | . foo: .quad .foo | |
3231 | . .quad .TOC.@tocbase | |
3232 | . .quad 0 | |
3233 | . | |
3234 | . .text | |
3235 | . .foo: blr | |
3236 | ||
3237 | When the linker resolves the call during a static link, the branch | |
3238 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3239 | If the function definition is in a shared library, things are a little | |
3240 | different: The call goes via a plt call stub, the opd information gets | |
3241 | copied to the plt, and the linker patches the nop. | |
3242 | ||
3243 | . x: | |
3244 | . bl .foo_stub | |
3245 | . ld 2,40(1) | |
3246 | . | |
3247 | . | |
3248 | . .foo_stub: | |
3249 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3250 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3251 | . std 2,40(1) # this is the general idea |
3252 | . ld 11,0(12) | |
3253 | . ld 2,8(12) | |
3254 | . mtctr 11 | |
3255 | . ld 11,16(12) | |
3256 | . bctr | |
3257 | . | |
3258 | . .section .plt | |
3259 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3260 | ||
3261 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3262 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3263 | copying. | |
3264 | ||
3265 | What are the difficulties here? Well, firstly, the relocations | |
3266 | examined by the linker in check_relocs are against the function code | |
3267 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3268 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3269 | to carefully copy dynamic link information from one symbol to the other. | |
3270 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3271 | symbol as is normal for most other backends. We need foo dynamic | |
3272 | instead, at least for an application final link. However, when | |
3273 | creating a shared library containing foo, we need to have both symbols | |
3274 | dynamic so that references to .foo are satisfied during the early | |
3275 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3276 | definition from some other object, eg. a static library. |
3277 | ||
3278 | Update: As of August 2004, we support a new convention. Function | |
3279 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3280 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3281 | |
3282 | /* The linker needs to keep track of the number of relocs that it | |
3283 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3284 | This is so that it can later discard them if they are found to be | |
3285 | unnecessary. We store the information in a field extending the | |
3286 | regular ELF linker hash table. */ | |
3287 | ||
3288 | struct ppc_dyn_relocs | |
3289 | { | |
3290 | struct ppc_dyn_relocs *next; | |
3291 | ||
3292 | /* The input section of the reloc. */ | |
3293 | asection *sec; | |
3294 | ||
3295 | /* Total number of relocs copied for the input section. */ | |
3296 | bfd_size_type count; | |
3297 | ||
3298 | /* Number of pc-relative relocs copied for the input section. */ | |
3299 | bfd_size_type pc_count; | |
3300 | }; | |
3301 | ||
411e1bfb AM |
3302 | /* Track GOT entries needed for a given symbol. We might need more |
3303 | than one got entry per symbol. */ | |
3304 | struct got_entry | |
3305 | { | |
3306 | struct got_entry *next; | |
3307 | ||
e7b938ca | 3308 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3309 | bfd_vma addend; |
3310 | ||
e717da7e AM |
3311 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3312 | symbol referenced from different input files. This is to support | |
3313 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
102890f0 AM |
3314 | from one input file to another. FIXME: After group_sections we |
3315 | ought to merge entries within the group. | |
e717da7e AM |
3316 | |
3317 | Point to the BFD owning this GOT entry. */ | |
3318 | bfd *owner; | |
3319 | ||
3320 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3321 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3322 | char tls_type; | |
3323 | ||
e7b938ca | 3324 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3325 | union |
3326 | { | |
3327 | bfd_signed_vma refcount; | |
3328 | bfd_vma offset; | |
3329 | } got; | |
411e1bfb AM |
3330 | }; |
3331 | ||
3332 | /* The same for PLT. */ | |
3333 | struct plt_entry | |
3334 | { | |
3335 | struct plt_entry *next; | |
3336 | ||
3337 | bfd_vma addend; | |
3338 | ||
3339 | union | |
3340 | { | |
3341 | bfd_signed_vma refcount; | |
3342 | bfd_vma offset; | |
3343 | } plt; | |
3344 | }; | |
3345 | ||
1d483afe | 3346 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3347 | selects those that must be copied when linking a shared library, |
3348 | even when the symbol is local. */ | |
65f38f15 | 3349 | |
1d483afe AM |
3350 | static int |
3351 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3352 | enum elf_ppc64_reloc_type r_type) | |
3353 | { | |
3354 | switch (r_type) | |
3355 | { | |
3356 | default: | |
3357 | return 1; | |
3358 | ||
3359 | case R_PPC64_REL32: | |
3360 | case R_PPC64_REL64: | |
3361 | case R_PPC64_REL30: | |
3362 | return 0; | |
3363 | ||
3364 | case R_PPC64_TPREL16: | |
3365 | case R_PPC64_TPREL16_LO: | |
3366 | case R_PPC64_TPREL16_HI: | |
3367 | case R_PPC64_TPREL16_HA: | |
3368 | case R_PPC64_TPREL16_DS: | |
3369 | case R_PPC64_TPREL16_LO_DS: | |
3370 | case R_PPC64_TPREL16_HIGHER: | |
3371 | case R_PPC64_TPREL16_HIGHERA: | |
3372 | case R_PPC64_TPREL16_HIGHEST: | |
3373 | case R_PPC64_TPREL16_HIGHESTA: | |
3374 | case R_PPC64_TPREL64: | |
3375 | return !info->executable; | |
3376 | } | |
3377 | } | |
65f38f15 | 3378 | |
f4656909 AM |
3379 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3380 | copying dynamic variables from a shared lib into an app's dynbss | |
3381 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3382 | shared lib. With code that gcc generates, it's vital that this be |
3383 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3384 | the address of a function descriptor, which resides in the .opd | |
3385 | section. gcc uses the descriptor directly rather than going via the | |
3386 | GOT as some other ABI's do, which means that initialized function | |
3387 | pointers must reference the descriptor. Thus, a function pointer | |
3388 | initialized to the address of a function in a shared library will | |
3389 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3390 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3391 | presents a problem as a plt entry for that function is also |
3392 | initialized from the function descriptor symbol and the copy reloc | |
3393 | may not be initialized first. */ | |
a23b6845 | 3394 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3395 | |
721956f4 AM |
3396 | /* Section name for stubs is the associated section name plus this |
3397 | string. */ | |
3398 | #define STUB_SUFFIX ".stub" | |
3399 | ||
3400 | /* Linker stubs. | |
3401 | ppc_stub_long_branch: | |
3402 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3403 | destination, but a 24 bit branch in a stub section will reach. | |
3404 | . b dest | |
3405 | ||
3406 | ppc_stub_plt_branch: | |
3407 | Similar to the above, but a 24 bit branch in the stub section won't | |
3408 | reach its destination. | |
87e226ce AM |
3409 | . addis %r12,%r2,xxx@toc@ha |
3410 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3411 | . mtctr %r11 |
3412 | . bctr | |
3413 | ||
3414 | ppc_stub_plt_call: | |
2c66dc6c AM |
3415 | Used to call a function in a shared library. If it so happens that |
3416 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3417 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3418 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3419 | . std %r2,40(%r1) |
87e226ce | 3420 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3421 | . mtctr %r11 |
ac2df442 | 3422 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3423 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3424 | . bctr |
ad8e1ba5 AM |
3425 | |
3426 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3427 | code to adjust the value and save r2 to support multiple toc sections. | |
3428 | A ppc_stub_long_branch with an r2 offset looks like: | |
3429 | . std %r2,40(%r1) | |
3430 | . addis %r2,%r2,off@ha | |
3431 | . addi %r2,%r2,off@l | |
3432 | . b dest | |
3433 | ||
3434 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3435 | . std %r2,40(%r1) | |
3436 | . addis %r12,%r2,xxx@toc@ha | |
3437 | . ld %r11,xxx@toc@l(%r12) | |
3438 | . addis %r2,%r2,off@ha | |
3439 | . addi %r2,%r2,off@l | |
3440 | . mtctr %r11 | |
3441 | . bctr | |
ac2df442 AM |
3442 | |
3443 | In cases where the "addis" instruction would add zero, the "addis" is | |
3444 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3445 | */ |
3446 | ||
3447 | enum ppc_stub_type { | |
3448 | ppc_stub_none, | |
3449 | ppc_stub_long_branch, | |
ad8e1ba5 | 3450 | ppc_stub_long_branch_r2off, |
721956f4 | 3451 | ppc_stub_plt_branch, |
ad8e1ba5 | 3452 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3453 | ppc_stub_plt_call |
3454 | }; | |
3455 | ||
3456 | struct ppc_stub_hash_entry { | |
3457 | ||
3458 | /* Base hash table entry structure. */ | |
3459 | struct bfd_hash_entry root; | |
3460 | ||
ad8e1ba5 AM |
3461 | enum ppc_stub_type stub_type; |
3462 | ||
721956f4 AM |
3463 | /* The stub section. */ |
3464 | asection *stub_sec; | |
3465 | ||
3466 | /* Offset within stub_sec of the beginning of this stub. */ | |
3467 | bfd_vma stub_offset; | |
3468 | ||
3469 | /* Given the symbol's value and its section we can determine its final | |
3470 | value when building the stubs (so the stub knows where to jump. */ | |
3471 | bfd_vma target_value; | |
3472 | asection *target_section; | |
3473 | ||
721956f4 AM |
3474 | /* The symbol table entry, if any, that this was derived from. */ |
3475 | struct ppc_link_hash_entry *h; | |
3476 | ||
411e1bfb AM |
3477 | /* And the reloc addend that this was derived from. */ |
3478 | bfd_vma addend; | |
3479 | ||
721956f4 AM |
3480 | /* Where this stub is being called from, or, in the case of combined |
3481 | stub sections, the first input section in the group. */ | |
3482 | asection *id_sec; | |
3483 | }; | |
3484 | ||
3485 | struct ppc_branch_hash_entry { | |
3486 | ||
3487 | /* Base hash table entry structure. */ | |
3488 | struct bfd_hash_entry root; | |
3489 | ||
c456f082 | 3490 | /* Offset within branch lookup table. */ |
721956f4 AM |
3491 | unsigned int offset; |
3492 | ||
3493 | /* Generation marker. */ | |
3494 | unsigned int iter; | |
3495 | }; | |
65f38f15 AM |
3496 | |
3497 | struct ppc_link_hash_entry | |
3498 | { | |
3499 | struct elf_link_hash_entry elf; | |
3500 | ||
b3fac117 AM |
3501 | union { |
3502 | /* A pointer to the most recently used stub hash entry against this | |
3503 | symbol. */ | |
3504 | struct ppc_stub_hash_entry *stub_cache; | |
3505 | ||
3506 | /* A pointer to the next symbol starting with a '.' */ | |
3507 | struct ppc_link_hash_entry *next_dot_sym; | |
3508 | } u; | |
721956f4 | 3509 | |
65f38f15 AM |
3510 | /* Track dynamic relocs copied for this symbol. */ |
3511 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3512 | |
721956f4 | 3513 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3514 | struct ppc_link_hash_entry *oh; |
721956f4 | 3515 | |
e86ce104 AM |
3516 | /* Flag function code and descriptor symbols. */ |
3517 | unsigned int is_func:1; | |
3518 | unsigned int is_func_descriptor:1; | |
908b32fc | 3519 | unsigned int fake:1; |
411e1bfb | 3520 | |
c5614fa4 AM |
3521 | /* Whether global opd/toc sym has been adjusted or not. |
3522 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3523 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3524 | unsigned int adjust_done:1; |
3525 | ||
99877b66 AM |
3526 | /* Set if we twiddled this symbol to weak at some stage. */ |
3527 | unsigned int was_undefined:1; | |
3528 | ||
411e1bfb | 3529 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3530 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3531 | corresponding relocs are encountered during check_relocs. | |
3532 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3533 | indicate the corresponding GOT entry type is not needed. | |
3534 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3535 | a TPREL one. We use a separate flag rather than setting TPREL | |
3536 | just for convenience in distinguishing the two cases. */ | |
3537 | #define TLS_GD 1 /* GD reloc. */ | |
3538 | #define TLS_LD 2 /* LD reloc. */ | |
3539 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3540 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3541 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3542 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3543 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3544 | char tls_mask; | |
65f38f15 AM |
3545 | }; |
3546 | ||
3547 | /* ppc64 ELF linker hash table. */ | |
3548 | ||
3549 | struct ppc_link_hash_table | |
3550 | { | |
3551 | struct elf_link_hash_table elf; | |
3552 | ||
721956f4 AM |
3553 | /* The stub hash table. */ |
3554 | struct bfd_hash_table stub_hash_table; | |
3555 | ||
3556 | /* Another hash table for plt_branch stubs. */ | |
3557 | struct bfd_hash_table branch_hash_table; | |
3558 | ||
3559 | /* Linker stub bfd. */ | |
3560 | bfd *stub_bfd; | |
3561 | ||
3562 | /* Linker call-backs. */ | |
4ce794b7 AM |
3563 | asection * (*add_stub_section) (const char *, asection *); |
3564 | void (*layout_sections_again) (void); | |
721956f4 AM |
3565 | |
3566 | /* Array to keep track of which stub sections have been created, and | |
3567 | information on stub grouping. */ | |
3568 | struct map_stub { | |
3569 | /* This is the section to which stubs in the group will be attached. */ | |
3570 | asection *link_sec; | |
3571 | /* The stub section. */ | |
3572 | asection *stub_sec; | |
ad8e1ba5 AM |
3573 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3574 | bfd_vma toc_off; | |
721956f4 AM |
3575 | } *stub_group; |
3576 | ||
ad8e1ba5 AM |
3577 | /* Temp used when calculating TOC pointers. */ |
3578 | bfd_vma toc_curr; | |
3579 | ||
8f3bab57 AM |
3580 | /* Highest input section id. */ |
3581 | int top_id; | |
3582 | ||
734b6cf9 AM |
3583 | /* Highest output section index. */ |
3584 | int top_index; | |
3585 | ||
b3fac117 AM |
3586 | /* Used when adding symbols. */ |
3587 | struct ppc_link_hash_entry *dot_syms; | |
3588 | ||
734b6cf9 AM |
3589 | /* List of input sections for each output section. */ |
3590 | asection **input_list; | |
721956f4 | 3591 | |
65f38f15 | 3592 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3593 | asection *got; |
4ce794b7 AM |
3594 | asection *plt; |
3595 | asection *relplt; | |
3596 | asection *dynbss; | |
3597 | asection *relbss; | |
3598 | asection *glink; | |
82bd7b59 | 3599 | asection *sfpr; |
4ce794b7 AM |
3600 | asection *brlt; |
3601 | asection *relbrlt; | |
ec338859 | 3602 | |
8387904d AM |
3603 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3604 | struct ppc_link_hash_entry *tls_get_addr; | |
3605 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3606 | |
9b5ecbd0 AM |
3607 | /* Statistics. */ |
3608 | unsigned long stub_count[ppc_stub_plt_call]; | |
3609 | ||
ee75fd95 AM |
3610 | /* Number of stubs against global syms. */ |
3611 | unsigned long stub_globals; | |
3612 | ||
ad8e1ba5 | 3613 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3614 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3615 | |
4c52953f AM |
3616 | /* Support for multiple toc sections. */ |
3617 | unsigned int no_multi_toc:1; | |
3618 | unsigned int multi_toc_needed:1; | |
3619 | ||
5d1634d7 | 3620 | /* Set on error. */ |
99877b66 | 3621 | unsigned int stub_error:1; |
721956f4 | 3622 | |
7d9616d7 | 3623 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3624 | unsigned int twiddled_syms:1; |
721956f4 AM |
3625 | |
3626 | /* Incremented every time we size stubs. */ | |
3627 | unsigned int stub_iteration; | |
5d1634d7 | 3628 | |
ec338859 AM |
3629 | /* Small local sym to section mapping cache. */ |
3630 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3631 | }; |
3632 | ||
4c52953f AM |
3633 | /* Rename some of the generic section flags to better document how they |
3634 | are used here. */ | |
3635 | #define has_toc_reloc has_gp_reloc | |
3636 | #define makes_toc_func_call need_finalize_relax | |
3637 | #define call_check_in_progress reloc_done | |
3638 | ||
65f38f15 AM |
3639 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3640 | ||
3641 | #define ppc_hash_table(p) \ | |
3642 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3643 | ||
721956f4 AM |
3644 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3645 | ((struct ppc_stub_hash_entry *) \ | |
3646 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3647 | ||
3648 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3649 | ((struct ppc_branch_hash_entry *) \ | |
3650 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3651 | ||
3652 | /* Create an entry in the stub hash table. */ | |
3653 | ||
3654 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3655 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3656 | struct bfd_hash_table *table, | |
3657 | const char *string) | |
721956f4 AM |
3658 | { |
3659 | /* Allocate the structure if it has not already been allocated by a | |
3660 | subclass. */ | |
3661 | if (entry == NULL) | |
3662 | { | |
3663 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3664 | if (entry == NULL) | |
3665 | return entry; | |
3666 | } | |
3667 | ||
3668 | /* Call the allocation method of the superclass. */ | |
3669 | entry = bfd_hash_newfunc (entry, table, string); | |
3670 | if (entry != NULL) | |
3671 | { | |
3672 | struct ppc_stub_hash_entry *eh; | |
3673 | ||
3674 | /* Initialize the local fields. */ | |
3675 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3676 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3677 | eh->stub_sec = NULL; |
3678 | eh->stub_offset = 0; | |
3679 | eh->target_value = 0; | |
3680 | eh->target_section = NULL; | |
721956f4 AM |
3681 | eh->h = NULL; |
3682 | eh->id_sec = NULL; | |
3683 | } | |
3684 | ||
3685 | return entry; | |
3686 | } | |
3687 | ||
3688 | /* Create an entry in the branch hash table. */ | |
3689 | ||
3690 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3691 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3692 | struct bfd_hash_table *table, | |
3693 | const char *string) | |
721956f4 AM |
3694 | { |
3695 | /* Allocate the structure if it has not already been allocated by a | |
3696 | subclass. */ | |
3697 | if (entry == NULL) | |
3698 | { | |
3699 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3700 | if (entry == NULL) | |
3701 | return entry; | |
3702 | } | |
3703 | ||
3704 | /* Call the allocation method of the superclass. */ | |
3705 | entry = bfd_hash_newfunc (entry, table, string); | |
3706 | if (entry != NULL) | |
3707 | { | |
3708 | struct ppc_branch_hash_entry *eh; | |
3709 | ||
3710 | /* Initialize the local fields. */ | |
3711 | eh = (struct ppc_branch_hash_entry *) entry; | |
3712 | eh->offset = 0; | |
3713 | eh->iter = 0; | |
3714 | } | |
3715 | ||
3716 | return entry; | |
3717 | } | |
3718 | ||
65f38f15 AM |
3719 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3720 | ||
3721 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3722 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3723 | struct bfd_hash_table *table, | |
3724 | const char *string) | |
65f38f15 AM |
3725 | { |
3726 | /* Allocate the structure if it has not already been allocated by a | |
3727 | subclass. */ | |
3728 | if (entry == NULL) | |
3729 | { | |
3730 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3731 | if (entry == NULL) | |
3732 | return entry; | |
3733 | } | |
3734 | ||
3735 | /* Call the allocation method of the superclass. */ | |
3736 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3737 | if (entry != NULL) | |
3738 | { | |
3739 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3740 | ||
b3fac117 | 3741 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3742 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3743 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3744 | ||
3745 | /* When making function calls, old ABI code references function entry | |
3746 | points (dot symbols), while new ABI code references the function | |
3747 | descriptor symbol. We need to make any combination of reference and | |
3748 | definition work together, without breaking archive linking. | |
3749 | ||
3750 | For a defined function "foo" and an undefined call to "bar": | |
3751 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3752 | "bar" too). | |
3753 | A new object defines "foo" and references "bar". | |
3754 | ||
3755 | A new object thus has no problem with its undefined symbols being | |
3756 | satisfied by definitions in an old object. On the other hand, the | |
3757 | old object won't have ".bar" satisfied by a new object. | |
3758 | ||
3759 | Keep a list of newly added dot-symbols. */ | |
3760 | ||
3761 | if (string[0] == '.') | |
3762 | { | |
3763 | struct ppc_link_hash_table *htab; | |
3764 | ||
3765 | htab = (struct ppc_link_hash_table *) table; | |
3766 | eh->u.next_dot_sym = htab->dot_syms; | |
3767 | htab->dot_syms = eh; | |
3768 | } | |
65f38f15 AM |
3769 | } |
3770 | ||
3771 | return entry; | |
3772 | } | |
3773 | ||
3774 | /* Create a ppc64 ELF linker hash table. */ | |
3775 | ||
3776 | static struct bfd_link_hash_table * | |
4ce794b7 | 3777 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3778 | { |
3779 | struct ppc_link_hash_table *htab; | |
3780 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3781 | ||
4ce794b7 | 3782 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3783 | if (htab == NULL) |
3784 | return NULL; | |
3785 | ||
66eb6687 AM |
3786 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3787 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3788 | { |
e2d34d7d | 3789 | free (htab); |
65f38f15 AM |
3790 | return NULL; |
3791 | } | |
3792 | ||
721956f4 | 3793 | /* Init the stub hash table too. */ |
66eb6687 AM |
3794 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3795 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3796 | return NULL; |
3797 | ||
3798 | /* And the branch hash table. */ | |
66eb6687 AM |
3799 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3800 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3801 | return NULL; |
3802 | ||
3254fd24 AM |
3803 | /* Initializing two fields of the union is just cosmetic. We really |
3804 | only care about glist, but when compiled on a 32-bit host the | |
3805 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3806 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3807 | htab->elf.init_got_refcount.refcount = 0; |
3808 | htab->elf.init_got_refcount.glist = NULL; | |
3809 | htab->elf.init_plt_refcount.refcount = 0; | |
3810 | htab->elf.init_plt_refcount.glist = NULL; | |
3811 | htab->elf.init_got_offset.offset = 0; | |
3812 | htab->elf.init_got_offset.glist = NULL; | |
3813 | htab->elf.init_plt_offset.offset = 0; | |
3814 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3815 | |
65f38f15 AM |
3816 | return &htab->elf.root; |
3817 | } | |
3818 | ||
721956f4 AM |
3819 | /* Free the derived linker hash table. */ |
3820 | ||
3821 | static void | |
4ce794b7 | 3822 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3823 | { |
3824 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3825 | ||
3826 | bfd_hash_table_free (&ret->stub_hash_table); | |
3827 | bfd_hash_table_free (&ret->branch_hash_table); | |
3828 | _bfd_generic_link_hash_table_free (hash); | |
3829 | } | |
3830 | ||
e717da7e AM |
3831 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3832 | ||
3833 | void | |
3834 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3835 | { | |
3836 | struct ppc_link_hash_table *htab; | |
3837 | ||
3838 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3839 | ||
3840 | /* Always hook our dynamic sections into the first bfd, which is the | |
3841 | linker created stub bfd. This ensures that the GOT header is at | |
3842 | the start of the output TOC section. */ | |
3843 | htab = ppc_hash_table (info); | |
3844 | htab->stub_bfd = abfd; | |
3845 | htab->elf.dynobj = abfd; | |
3846 | } | |
3847 | ||
721956f4 AM |
3848 | /* Build a name for an entry in the stub hash table. */ |
3849 | ||
3850 | static char * | |
4ce794b7 AM |
3851 | ppc_stub_name (const asection *input_section, |
3852 | const asection *sym_sec, | |
3853 | const struct ppc_link_hash_entry *h, | |
3854 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3855 | { |
3856 | char *stub_name; | |
3857 | bfd_size_type len; | |
3858 | ||
3859 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3860 | offsets from a sym as a branch target? In fact, we could | |
3861 | probably assume the addend is always zero. */ | |
3862 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3863 | ||
3864 | if (h) | |
3865 | { | |
3866 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3867 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3868 | if (stub_name == NULL) |
3869 | return stub_name; | |
3870 | ||
3871 | sprintf (stub_name, "%08x.%s+%x", | |
3872 | input_section->id & 0xffffffff, | |
3873 | h->elf.root.root.string, | |
3874 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3875 | } |
3876 | else | |
3877 | { | |
ad8e1ba5 | 3878 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3879 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3880 | if (stub_name == NULL) |
3881 | return stub_name; | |
3882 | ||
3883 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3884 | input_section->id & 0xffffffff, | |
3885 | sym_sec->id & 0xffffffff, | |
3886 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3887 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3888 | } |
ee75fd95 AM |
3889 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3890 | stub_name[len - 2] = 0; | |
721956f4 AM |
3891 | return stub_name; |
3892 | } | |
3893 | ||
3894 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3895 | creating the stub name takes a bit of time. */ | |
3896 | ||
3897 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3898 | ppc_get_stub_entry (const asection *input_section, |
3899 | const asection *sym_sec, | |
039b3fef | 3900 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3901 | const Elf_Internal_Rela *rel, |
3902 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3903 | { |
3904 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3905 | const asection *id_sec; |
3906 | ||
3907 | /* If this input section is part of a group of sections sharing one | |
3908 | stub section, then use the id of the first section in the group. | |
3909 | Stub names need to include a section id, as there may well be | |
3910 | more than one stub used to reach say, printf, and we need to | |
3911 | distinguish between them. */ | |
3912 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3913 | ||
b3fac117 AM |
3914 | if (h != NULL && h->u.stub_cache != NULL |
3915 | && h->u.stub_cache->h == h | |
3916 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3917 | { |
b3fac117 | 3918 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3919 | } |
3920 | else | |
3921 | { | |
3922 | char *stub_name; | |
3923 | ||
3924 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3925 | if (stub_name == NULL) | |
3926 | return NULL; | |
3927 | ||
3928 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3929 | stub_name, FALSE, FALSE); |
721956f4 | 3930 | if (h != NULL) |
b3fac117 | 3931 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3932 | |
3933 | free (stub_name); | |
3934 | } | |
3935 | ||
3936 | return stub_entry; | |
3937 | } | |
3938 | ||
3939 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3940 | stub entry are initialised. */ | |
3941 | ||
3942 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3943 | ppc_add_stub (const char *stub_name, |
3944 | asection *section, | |
3945 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3946 | { |
3947 | asection *link_sec; | |
3948 | asection *stub_sec; | |
3949 | struct ppc_stub_hash_entry *stub_entry; | |
3950 | ||
3951 | link_sec = htab->stub_group[section->id].link_sec; | |
3952 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3953 | if (stub_sec == NULL) | |
3954 | { | |
3955 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3956 | if (stub_sec == NULL) | |
3957 | { | |
d4c88bbb | 3958 | size_t namelen; |
721956f4 AM |
3959 | bfd_size_type len; |
3960 | char *s_name; | |
3961 | ||
d4c88bbb AM |
3962 | namelen = strlen (link_sec->name); |
3963 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3964 | s_name = bfd_alloc (htab->stub_bfd, len); |
3965 | if (s_name == NULL) | |
3966 | return NULL; | |
3967 | ||
d4c88bbb AM |
3968 | memcpy (s_name, link_sec->name, namelen); |
3969 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3970 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3971 | if (stub_sec == NULL) | |
3972 | return NULL; | |
3973 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3974 | } | |
3975 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3976 | } | |
3977 | ||
3978 | /* Enter this entry into the linker stub hash table. */ | |
3979 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3980 | TRUE, FALSE); |
721956f4 AM |
3981 | if (stub_entry == NULL) |
3982 | { | |
d003868e AM |
3983 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3984 | section->owner, stub_name); | |
721956f4 AM |
3985 | return NULL; |
3986 | } | |
3987 | ||
3988 | stub_entry->stub_sec = stub_sec; | |
3989 | stub_entry->stub_offset = 0; | |
3990 | stub_entry->id_sec = link_sec; | |
3991 | return stub_entry; | |
3992 | } | |
3993 | ||
82bd7b59 AM |
3994 | /* Create sections for linker generated code. */ |
3995 | ||
b34976b6 | 3996 | static bfd_boolean |
4ce794b7 | 3997 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3998 | { |
3999 | struct ppc_link_hash_table *htab; | |
4000 | flagword flags; | |
4001 | ||
4002 | htab = ppc_hash_table (info); | |
4003 | ||
4004 | /* Create .sfpr for code to save and restore fp regs. */ | |
4005 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4006 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4007 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4008 | flags); | |
82bd7b59 | 4009 | if (htab->sfpr == NULL |
82bd7b59 | 4010 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4011 | return FALSE; |
82bd7b59 | 4012 | |
721956f4 | 4013 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4014 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4015 | flags); | |
4ce794b7 | 4016 | if (htab->glink == NULL |
ee4bf8d2 | 4017 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4018 | return FALSE; |
82bd7b59 | 4019 | |
c456f082 | 4020 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4021 | flags = (SEC_ALLOC | SEC_LOAD |
4022 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4023 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4024 | flags); | |
4ce794b7 | 4025 | if (htab->brlt == NULL |
4ce794b7 | 4026 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4027 | return FALSE; |
721956f4 | 4028 | |
e4e0193e | 4029 | if (!info->shared) |
c456f082 AM |
4030 | return TRUE; |
4031 | ||
e4e0193e AM |
4032 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4033 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4034 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4035 | ".rela.branch_lt", | |
4036 | flags); | |
c456f082 AM |
4037 | if (!htab->relbrlt |
4038 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4039 | return FALSE; | |
4040 | ||
b34976b6 | 4041 | return TRUE; |
82bd7b59 AM |
4042 | } |
4043 | ||
e717da7e AM |
4044 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4045 | not already done. */ | |
65f38f15 | 4046 | |
b34976b6 | 4047 | static bfd_boolean |
e717da7e | 4048 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4049 | { |
e717da7e AM |
4050 | asection *got, *relgot; |
4051 | flagword flags; | |
4052 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4053 | |
0c8d6e5c | 4054 | if (!is_ppc64_elf (abfd)) |
0ffa91dd NC |
4055 | return FALSE; |
4056 | ||
4ce794b7 | 4057 | if (!htab->got) |
e717da7e AM |
4058 | { |
4059 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4060 | return FALSE; | |
4061 | ||
4062 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4063 | if (!htab->got) | |
4064 | abort (); | |
4065 | } | |
4066 | ||
4067 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4068 | | SEC_LINKER_CREATED); | |
4069 | ||
c456f082 | 4070 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4071 | if (!got |
e717da7e AM |
4072 | || !bfd_set_section_alignment (abfd, got, 3)) |
4073 | return FALSE; | |
65f38f15 | 4074 | |
c456f082 AM |
4075 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4076 | flags | SEC_READONLY); | |
e717da7e | 4077 | if (!relgot |
e717da7e | 4078 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4079 | return FALSE; |
e717da7e AM |
4080 | |
4081 | ppc64_elf_tdata (abfd)->got = got; | |
4082 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4083 | return TRUE; |
65f38f15 | 4084 | } |
5bd4f169 | 4085 | |
82bd7b59 | 4086 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4087 | |
b34976b6 | 4088 | static bfd_boolean |
4ce794b7 | 4089 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4090 | { |
65f38f15 | 4091 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4092 | |
65f38f15 | 4093 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4094 | return FALSE; |
65f38f15 | 4095 | |
e717da7e AM |
4096 | htab = ppc_hash_table (info); |
4097 | if (!htab->got) | |
4098 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4099 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4100 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4101 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4102 | if (!info->shared) |
4ce794b7 | 4103 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4104 | |
e717da7e | 4105 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4106 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4107 | abort (); |
4108 | ||
b34976b6 | 4109 | return TRUE; |
5bd4f169 AM |
4110 | } |
4111 | ||
40d16e0b AM |
4112 | /* Merge PLT info on FROM with that on TO. */ |
4113 | ||
4114 | static void | |
4115 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4116 | struct ppc_link_hash_entry *to) | |
4117 | { | |
4118 | if (from->elf.plt.plist != NULL) | |
4119 | { | |
4120 | if (to->elf.plt.plist != NULL) | |
4121 | { | |
4122 | struct plt_entry **entp; | |
4123 | struct plt_entry *ent; | |
4124 | ||
4125 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4126 | { | |
4127 | struct plt_entry *dent; | |
4128 | ||
4129 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4130 | if (dent->addend == ent->addend) | |
4131 | { | |
4132 | dent->plt.refcount += ent->plt.refcount; | |
4133 | *entp = ent->next; | |
4134 | break; | |
4135 | } | |
4136 | if (dent == NULL) | |
4137 | entp = &ent->next; | |
4138 | } | |
4139 | *entp = to->elf.plt.plist; | |
4140 | } | |
4141 | ||
4142 | to->elf.plt.plist = from->elf.plt.plist; | |
4143 | from->elf.plt.plist = NULL; | |
4144 | } | |
4145 | } | |
4146 | ||
65f38f15 AM |
4147 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4148 | ||
4149 | static void | |
fcfa13d2 AM |
4150 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4151 | struct elf_link_hash_entry *dir, | |
4152 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4153 | { |
4154 | struct ppc_link_hash_entry *edir, *eind; | |
4155 | ||
4156 | edir = (struct ppc_link_hash_entry *) dir; | |
4157 | eind = (struct ppc_link_hash_entry *) ind; | |
4158 | ||
411e1bfb | 4159 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4160 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4161 | { |
bbd7ec4a AM |
4162 | if (edir->dyn_relocs != NULL) |
4163 | { | |
4164 | struct ppc_dyn_relocs **pp; | |
4165 | struct ppc_dyn_relocs *p; | |
4166 | ||
fcfa13d2 | 4167 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4168 | list. Merge any entries against the same section. */ |
4169 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4170 | { | |
4171 | struct ppc_dyn_relocs *q; | |
4172 | ||
4173 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4174 | if (q->sec == p->sec) | |
4175 | { | |
4176 | q->pc_count += p->pc_count; | |
4177 | q->count += p->count; | |
4178 | *pp = p->next; | |
4179 | break; | |
4180 | } | |
4181 | if (q == NULL) | |
4182 | pp = &p->next; | |
4183 | } | |
4184 | *pp = edir->dyn_relocs; | |
4185 | } | |
4186 | ||
65f38f15 AM |
4187 | edir->dyn_relocs = eind->dyn_relocs; |
4188 | eind->dyn_relocs = NULL; | |
4189 | } | |
65f38f15 | 4190 | |
6349e628 AM |
4191 | edir->is_func |= eind->is_func; |
4192 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 4193 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 4194 | |
81848ca0 | 4195 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 4196 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 4197 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
4198 | if (!(ELIMINATE_COPY_RELOCS |
4199 | && eind->elf.root.type != bfd_link_hash_indirect | |
4200 | && edir->elf.dynamic_adjusted)) | |
4201 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4202 | |
f5385ebf AM |
4203 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4204 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4205 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4206 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4207 | |
4208 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4209 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4210 | return; | |
4211 | ||
81848ca0 AM |
4212 | /* Copy over got entries that we may have already seen to the |
4213 | symbol which just became indirect. */ | |
411e1bfb AM |
4214 | if (eind->elf.got.glist != NULL) |
4215 | { | |
4216 | if (edir->elf.got.glist != NULL) | |
4217 | { | |
4218 | struct got_entry **entp; | |
4219 | struct got_entry *ent; | |
4220 | ||
4221 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4222 | { | |
4223 | struct got_entry *dent; | |
4224 | ||
4225 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4226 | if (dent->addend == ent->addend | |
e717da7e | 4227 | && dent->owner == ent->owner |
411e1bfb AM |
4228 | && dent->tls_type == ent->tls_type) |
4229 | { | |
4230 | dent->got.refcount += ent->got.refcount; | |
4231 | *entp = ent->next; | |
4232 | break; | |
4233 | } | |
4234 | if (dent == NULL) | |
4235 | entp = &ent->next; | |
4236 | } | |
4237 | *entp = edir->elf.got.glist; | |
4238 | } | |
4239 | ||
4240 | edir->elf.got.glist = eind->elf.got.glist; | |
4241 | eind->elf.got.glist = NULL; | |
4242 | } | |
4243 | ||
4244 | /* And plt entries. */ | |
40d16e0b | 4245 | move_plt_plist (eind, edir); |
411e1bfb | 4246 | |
fcfa13d2 | 4247 | if (eind->elf.dynindx != -1) |
411e1bfb | 4248 | { |
fcfa13d2 AM |
4249 | if (edir->elf.dynindx != -1) |
4250 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4251 | edir->elf.dynstr_index); | |
411e1bfb AM |
4252 | edir->elf.dynindx = eind->elf.dynindx; |
4253 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4254 | eind->elf.dynindx = -1; | |
4255 | eind->elf.dynstr_index = 0; | |
4256 | } | |
411e1bfb AM |
4257 | } |
4258 | ||
8387904d AM |
4259 | /* Find the function descriptor hash entry from the given function code |
4260 | hash entry FH. Link the entries via their OH fields. */ | |
4261 | ||
4262 | static struct ppc_link_hash_entry * | |
4263 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4264 | { | |
4265 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4266 | ||
4267 | if (fdh == NULL) | |
4268 | { | |
4269 | const char *fd_name = fh->elf.root.root.string + 1; | |
4270 | ||
4271 | fdh = (struct ppc_link_hash_entry *) | |
4272 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4273 | if (fdh != NULL) | |
4274 | { | |
4275 | fdh->is_func_descriptor = 1; | |
4276 | fdh->oh = fh; | |
4277 | fh->is_func = 1; | |
4278 | fh->oh = fdh; | |
4279 | } | |
4280 | } | |
4281 | ||
4282 | return fdh; | |
4283 | } | |
4284 | ||
bb700d78 AM |
4285 | /* Make a fake function descriptor sym for the code sym FH. */ |
4286 | ||
4287 | static struct ppc_link_hash_entry * | |
4288 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4289 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4290 | { |
4291 | bfd *abfd; | |
4292 | asymbol *newsym; | |
4293 | struct bfd_link_hash_entry *bh; | |
4294 | struct ppc_link_hash_entry *fdh; | |
4295 | ||
4296 | abfd = fh->elf.root.u.undef.abfd; | |
4297 | newsym = bfd_make_empty_symbol (abfd); | |
4298 | newsym->name = fh->elf.root.root.string + 1; | |
4299 | newsym->section = bfd_und_section_ptr; | |
4300 | newsym->value = 0; | |
908b32fc | 4301 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4302 | |
4303 | bh = NULL; | |
4304 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4305 | newsym->flags, newsym->section, | |
4306 | newsym->value, NULL, FALSE, FALSE, | |
4307 | &bh)) | |
4308 | return NULL; | |
4309 | ||
4310 | fdh = (struct ppc_link_hash_entry *) bh; | |
4311 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4312 | fdh->fake = 1; |
4313 | fdh->is_func_descriptor = 1; | |
4314 | fdh->oh = fh; | |
4315 | fh->is_func = 1; | |
4316 | fh->oh = fdh; | |
bb700d78 AM |
4317 | return fdh; |
4318 | } | |
4319 | ||
8387904d AM |
4320 | /* Fix function descriptor symbols defined in .opd sections to be |
4321 | function type. */ | |
555cd476 AM |
4322 | |
4323 | static bfd_boolean | |
b3fac117 | 4324 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4325 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4326 | Elf_Internal_Sym *isym, | |
b3fac117 | 4327 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4328 | flagword *flags ATTRIBUTE_UNUSED, |
4329 | asection **sec, | |
4330 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4331 | { | |
8843416a AM |
4332 | if (*sec != NULL |
4333 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4334 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4335 | |
555cd476 AM |
4336 | return TRUE; |
4337 | } | |
4338 | ||
8387904d | 4339 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4340 | inclusion of a new ABI object archive that defines "bar". |
4341 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4342 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4343 | |
4344 | static struct elf_link_hash_entry * | |
4345 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4346 | struct bfd_link_info *info, | |
4347 | const char *name) | |
4348 | { | |
4349 | struct elf_link_hash_entry *h; | |
4350 | char *dot_name; | |
4351 | size_t len; | |
4352 | ||
4353 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4354 | if (h != NULL |
4355 | /* Don't return this sym if it is a fake function descriptor | |
4356 | created by add_symbol_adjust. */ | |
4357 | && !(h->root.type == bfd_link_hash_undefweak | |
4358 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4359 | return h; |
4360 | ||
4361 | if (name[0] == '.') | |
4362 | return h; | |
4363 | ||
4364 | len = strlen (name); | |
4365 | dot_name = bfd_alloc (abfd, len + 2); | |
4366 | if (dot_name == NULL) | |
4367 | return (struct elf_link_hash_entry *) 0 - 1; | |
4368 | dot_name[0] = '.'; | |
4369 | memcpy (dot_name + 1, name, len + 1); | |
4370 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4371 | bfd_release (abfd, dot_name); | |
4372 | return h; | |
4373 | } | |
4374 | ||
4375 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4376 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4377 | are made weak. This stops later archive searches from including an | |
4378 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4379 | prevents the linker complaining about undefined symbols. |
4380 | We also check and correct mismatched symbol visibility here. The | |
4381 | most restrictive visibility of the function descriptor and the | |
4382 | function entry symbol is used. */ | |
8387904d AM |
4383 | |
4384 | static bfd_boolean | |
b3fac117 | 4385 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4386 | { |
8387904d AM |
4387 | struct ppc_link_hash_table *htab; |
4388 | struct ppc_link_hash_entry *fdh; | |
4389 | ||
b3fac117 | 4390 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4391 | return TRUE; |
4392 | ||
b3fac117 AM |
4393 | if (eh->elf.root.type == bfd_link_hash_warning) |
4394 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4395 | |
b3fac117 AM |
4396 | if (eh->elf.root.root.string[0] != '.') |
4397 | abort (); | |
8387904d | 4398 | |
b3fac117 | 4399 | htab = ppc_hash_table (info); |
99877b66 | 4400 | fdh = get_fdh (eh, htab); |
bb700d78 | 4401 | if (fdh == NULL |
b3fac117 | 4402 | && !info->relocatable |
bb700d78 AM |
4403 | && (eh->elf.root.type == bfd_link_hash_undefined |
4404 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4405 | && eh->elf.ref_regular) | |
4406 | { | |
4407 | /* Make an undefweak function descriptor sym, which is enough to | |
4408 | pull in an --as-needed shared lib, but won't cause link | |
4409 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4410 | fdh = make_fdh (info, eh); |
bb700d78 | 4411 | if (fdh == NULL) |
b3fac117 | 4412 | return FALSE; |
bb700d78 AM |
4413 | else |
4414 | fdh->elf.ref_regular = 1; | |
4415 | } | |
e87d886e | 4416 | else if (fdh != NULL) |
8387904d | 4417 | { |
35b0ce59 AM |
4418 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4419 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4420 | if (entry_vis < descr_vis) | |
4421 | fdh->elf.other += entry_vis - descr_vis; | |
4422 | else if (entry_vis > descr_vis) | |
4423 | eh->elf.other += descr_vis - entry_vis; | |
4424 | ||
e87d886e AM |
4425 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4426 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4427 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4428 | { |
4429 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4430 | eh->was_undefined = 1; | |
4431 | htab->twiddled_syms = 1; | |
4432 | } | |
8387904d | 4433 | } |
99877b66 | 4434 | |
8387904d AM |
4435 | return TRUE; |
4436 | } | |
4437 | ||
b3fac117 AM |
4438 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4439 | ||
8387904d | 4440 | static bfd_boolean |
7d9616d7 | 4441 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4442 | { |
99877b66 | 4443 | struct ppc_link_hash_table *htab; |
b3fac117 | 4444 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4445 | |
99877b66 | 4446 | htab = ppc_hash_table (info); |
0c8d6e5c | 4447 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 AM |
4448 | return TRUE; |
4449 | ||
0c8d6e5c | 4450 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4451 | { |
4452 | p = &htab->dot_syms; | |
4453 | while ((eh = *p) != NULL) | |
4454 | { | |
4455 | *p = NULL; | |
4456 | if (!add_symbol_adjust (eh, info)) | |
4457 | return FALSE; | |
4458 | p = &eh->u.next_dot_sym; | |
4459 | } | |
4460 | } | |
4461 | ||
4462 | /* Clear the list for non-ppc64 input files. */ | |
4463 | p = &htab->dot_syms; | |
4464 | while ((eh = *p) != NULL) | |
4465 | { | |
4466 | *p = NULL; | |
4467 | p = &eh->u.next_dot_sym; | |
4468 | } | |
99877b66 AM |
4469 | |
4470 | /* We need to fix the undefs list for any syms we have twiddled to | |
4471 | undef_weak. */ | |
4472 | if (htab->twiddled_syms) | |
4473 | { | |
77cfaee6 | 4474 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4475 | htab->twiddled_syms = 0; |
4476 | } | |
b3fac117 | 4477 | return TRUE; |
8387904d AM |
4478 | } |
4479 | ||
97fed1c9 JJ |
4480 | /* Undo hash table changes when an --as-needed input file is determined |
4481 | not to be needed. */ | |
4482 | ||
4483 | static bfd_boolean | |
4484 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4485 | struct bfd_link_info *info) | |
4486 | { | |
4487 | ppc_hash_table (info)->dot_syms = NULL; | |
4488 | return TRUE; | |
4489 | } | |
4490 | ||
411e1bfb | 4491 | static bfd_boolean |
4ce794b7 AM |
4492 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4493 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4494 | { |
4495 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4496 | char *local_got_tls_masks; |
411e1bfb AM |
4497 | |
4498 | if (local_got_ents == NULL) | |
4499 | { | |
4500 | bfd_size_type size = symtab_hdr->sh_info; | |
4501 | ||
e7b938ca | 4502 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4503 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4504 | if (local_got_ents == NULL) |
4505 | return FALSE; | |
4506 | elf_local_got_ents (abfd) = local_got_ents; | |
4507 | } | |
4508 | ||
4509 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4510 | { | |
4511 | struct got_entry *ent; | |
4512 | ||
4513 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4514 | if (ent->addend == r_addend |
4515 | && ent->owner == abfd | |
4516 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4517 | break; |
4518 | if (ent == NULL) | |
4519 | { | |
4520 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4521 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4522 | if (ent == NULL) |
4523 | return FALSE; | |
4524 | ent->next = local_got_ents[r_symndx]; | |
4525 | ent->addend = r_addend; | |
e717da7e | 4526 | ent->owner = abfd; |
411e1bfb AM |
4527 | ent->tls_type = tls_type; |
4528 | ent->got.refcount = 0; | |
4529 | local_got_ents[r_symndx] = ent; | |
4530 | } | |
4531 | ent->got.refcount += 1; | |
4532 | } | |
4533 | ||
e7b938ca AM |
4534 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4535 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4536 | return TRUE; |
65f38f15 AM |
4537 | } |
4538 | ||
411e1bfb | 4539 | static bfd_boolean |
4ce794b7 | 4540 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4541 | { |
411e1bfb | 4542 | struct plt_entry *ent; |
1e2f5b6e | 4543 | |
411e1bfb AM |
4544 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4545 | if (ent->addend == addend) | |
4546 | break; | |
4547 | if (ent == NULL) | |
1e2f5b6e | 4548 | { |
411e1bfb | 4549 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4550 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4551 | if (ent == NULL) |
4552 | return FALSE; | |
4553 | ent->next = eh->elf.plt.plist; | |
4554 | ent->addend = addend; | |
4555 | ent->plt.refcount = 0; | |
4556 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4557 | } |
411e1bfb | 4558 | ent->plt.refcount += 1; |
f5385ebf | 4559 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4560 | if (eh->elf.root.root.string[0] == '.' |
4561 | && eh->elf.root.root.string[1] != '\0') | |
4562 | eh->is_func = 1; | |
b34976b6 | 4563 | return TRUE; |
1e2f5b6e AM |
4564 | } |
4565 | ||
5bd4f169 | 4566 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4567 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4568 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4569 | |
b34976b6 | 4570 | static bfd_boolean |
4ce794b7 AM |
4571 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4572 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4573 | { |
65f38f15 | 4574 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4575 | Elf_Internal_Shdr *symtab_hdr; |
4576 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4577 | const Elf_Internal_Rela *rel; | |
4578 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4579 | asection *sreloc; |
1e2f5b6e | 4580 | asection **opd_sym_map; |
5bd4f169 | 4581 | |
1049f94e | 4582 | if (info->relocatable) |
b34976b6 | 4583 | return TRUE; |
5bd4f169 | 4584 | |
680a3378 AM |
4585 | /* Don't do anything special with non-loaded, non-alloced sections. |
4586 | In particular, any relocs in such sections should not affect GOT | |
4587 | and PLT reference counting (ie. we don't allow them to create GOT | |
4588 | or PLT entries), there's no possibility or desire to optimize TLS | |
4589 | relocs, and there's not much point in propagating relocs to shared | |
4590 | libs that the dynamic linker won't relocate. */ | |
4591 | if ((sec->flags & SEC_ALLOC) == 0) | |
4592 | return TRUE; | |
4593 | ||
0c8d6e5c | 4594 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4595 | |
65f38f15 | 4596 | htab = ppc_hash_table (info); |
0ffa91dd | 4597 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 AM |
4598 | |
4599 | sym_hashes = elf_sym_hashes (abfd); | |
4600 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4601 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4602 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4603 | |
4604 | sreloc = NULL; | |
1e2f5b6e AM |
4605 | opd_sym_map = NULL; |
4606 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4607 | { | |
4608 | /* Garbage collection needs some extra help with .opd sections. | |
4609 | We don't want to necessarily keep everything referenced by | |
4610 | relocs in .opd, as that would keep all functions. Instead, | |
4611 | if we reference an .opd symbol (a function descriptor), we | |
4612 | want to keep the function code symbol's section. This is | |
4613 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4614 | information about the associated function section. */ |
1e2f5b6e AM |
4615 | bfd_size_type amt; |
4616 | ||
74f0fb50 | 4617 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4618 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4619 | if (opd_sym_map == NULL) |
b34976b6 | 4620 | return FALSE; |
74f0fb50 | 4621 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4622 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4623 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4624 | } |
5bd4f169 | 4625 | |
82bd7b59 AM |
4626 | if (htab->sfpr == NULL |
4627 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4628 | return FALSE; |
82bd7b59 | 4629 | |
5bd4f169 AM |
4630 | rel_end = relocs + sec->reloc_count; |
4631 | for (rel = relocs; rel < rel_end; rel++) | |
4632 | { | |
4633 | unsigned long r_symndx; | |
4634 | struct elf_link_hash_entry *h; | |
04c9666a | 4635 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4636 | int tls_type = 0; |
7c8fe5c4 | 4637 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4638 | |
4639 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4640 | if (r_symndx < symtab_hdr->sh_info) | |
4641 | h = NULL; | |
4642 | else | |
973a3492 L |
4643 | { |
4644 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4645 | while (h->root.type == bfd_link_hash_indirect | |
4646 | || h->root.type == bfd_link_hash_warning) | |
4647 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4648 | } | |
5bd4f169 | 4649 | |
4ce794b7 | 4650 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4651 | switch (r_type) |
5bd4f169 | 4652 | { |
411e1bfb AM |
4653 | case R_PPC64_GOT_TLSLD16: |
4654 | case R_PPC64_GOT_TLSLD16_LO: | |
4655 | case R_PPC64_GOT_TLSLD16_HI: | |
4656 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 4657 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4658 | goto dogottls; |
4659 | ||
4660 | case R_PPC64_GOT_TLSGD16: | |
4661 | case R_PPC64_GOT_TLSGD16_LO: | |
4662 | case R_PPC64_GOT_TLSGD16_HI: | |
4663 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4664 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4665 | goto dogottls; |
4666 | ||
4667 | case R_PPC64_GOT_TPREL16_DS: | |
4668 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4669 | case R_PPC64_GOT_TPREL16_HI: | |
4670 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 4671 | if (!info->executable) |
411e1bfb AM |
4672 | info->flags |= DF_STATIC_TLS; |
4673 | tls_type = TLS_TLS | TLS_TPREL; | |
4674 | goto dogottls; | |
4675 | ||
4676 | case R_PPC64_GOT_DTPREL16_DS: | |
4677 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4678 | case R_PPC64_GOT_DTPREL16_HI: | |
4679 | case R_PPC64_GOT_DTPREL16_HA: | |
4680 | tls_type = TLS_TLS | TLS_DTPREL; | |
4681 | dogottls: | |
4682 | sec->has_tls_reloc = 1; | |
4683 | /* Fall thru */ | |
4684 | ||
5bd4f169 | 4685 | case R_PPC64_GOT16: |
5bd4f169 | 4686 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4687 | case R_PPC64_GOT16_HA: |
4688 | case R_PPC64_GOT16_HI: | |
4689 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4690 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4691 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4692 | sec->has_toc_reloc = 1; |
e717da7e AM |
4693 | if (ppc64_elf_tdata (abfd)->got == NULL |
4694 | && !create_got_section (abfd, info)) | |
b34976b6 | 4695 | return FALSE; |
5bd4f169 AM |
4696 | |
4697 | if (h != NULL) | |
4698 | { | |
411e1bfb AM |
4699 | struct ppc_link_hash_entry *eh; |
4700 | struct got_entry *ent; | |
65f38f15 | 4701 | |
411e1bfb AM |
4702 | eh = (struct ppc_link_hash_entry *) h; |
4703 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4704 | if (ent->addend == rel->r_addend | |
e717da7e | 4705 | && ent->owner == abfd |
411e1bfb AM |
4706 | && ent->tls_type == tls_type) |
4707 | break; | |
4708 | if (ent == NULL) | |
5bd4f169 | 4709 | { |
411e1bfb | 4710 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4711 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4712 | if (ent == NULL) |
b34976b6 | 4713 | return FALSE; |
411e1bfb AM |
4714 | ent->next = eh->elf.got.glist; |
4715 | ent->addend = rel->r_addend; | |
e717da7e | 4716 | ent->owner = abfd; |
411e1bfb AM |
4717 | ent->tls_type = tls_type; |
4718 | ent->got.refcount = 0; | |
4719 | eh->elf.got.glist = ent; | |
5bd4f169 | 4720 | } |
411e1bfb | 4721 | ent->got.refcount += 1; |
e7b938ca | 4722 | eh->tls_mask |= tls_type; |
5bd4f169 | 4723 | } |
411e1bfb AM |
4724 | else |
4725 | /* This is a global offset table entry for a local symbol. */ | |
4726 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4727 | rel->r_addend, tls_type)) | |
4728 | return FALSE; | |
5bd4f169 AM |
4729 | break; |
4730 | ||
5bd4f169 | 4731 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4732 | case R_PPC64_PLT16_HI: |
4733 | case R_PPC64_PLT16_LO: | |
4734 | case R_PPC64_PLT32: | |
4735 | case R_PPC64_PLT64: | |
5bd4f169 | 4736 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4737 | actually build the entry in adjust_dynamic_symbol, |
4738 | because this might be a case of linking PIC code without | |
4739 | linking in any dynamic objects, in which case we don't | |
4740 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4741 | if (h == NULL) |
4742 | { | |
4743 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4744 | table entry for a local symbol. */ |
5bd4f169 | 4745 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4746 | return FALSE; |
5bd4f169 | 4747 | } |
411e1bfb AM |
4748 | else |
4749 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4750 | rel->r_addend)) | |
4751 | return FALSE; | |
5bd4f169 AM |
4752 | break; |
4753 | ||
4754 | /* The following relocations don't need to propagate the | |
4755 | relocation if linking a shared object since they are | |
4756 | section relative. */ | |
4757 | case R_PPC64_SECTOFF: | |
4758 | case R_PPC64_SECTOFF_LO: | |
4759 | case R_PPC64_SECTOFF_HI: | |
4760 | case R_PPC64_SECTOFF_HA: | |
4761 | case R_PPC64_SECTOFF_DS: | |
4762 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4763 | case R_PPC64_DTPREL16: |
4764 | case R_PPC64_DTPREL16_LO: | |
4765 | case R_PPC64_DTPREL16_HI: | |
4766 | case R_PPC64_DTPREL16_HA: | |
4767 | case R_PPC64_DTPREL16_DS: | |
4768 | case R_PPC64_DTPREL16_LO_DS: | |
4769 | case R_PPC64_DTPREL16_HIGHER: | |
4770 | case R_PPC64_DTPREL16_HIGHERA: | |
4771 | case R_PPC64_DTPREL16_HIGHEST: | |
4772 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4773 | break; |
4774 | ||
ad8e1ba5 AM |
4775 | /* Nor do these. */ |
4776 | case R_PPC64_TOC16: | |
4777 | case R_PPC64_TOC16_LO: | |
4778 | case R_PPC64_TOC16_HI: | |
4779 | case R_PPC64_TOC16_HA: | |
4780 | case R_PPC64_TOC16_DS: | |
4781 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4782 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4783 | break; |
4784 | ||
5bd4f169 AM |
4785 | /* This relocation describes the C++ object vtable hierarchy. |
4786 | Reconstruct it for later use during GC. */ | |
4787 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4788 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4789 | return FALSE; |
5bd4f169 AM |
4790 | break; |
4791 | ||
4792 | /* This relocation describes which C++ vtable entries are actually | |
4793 | used. Record for later use during GC. */ | |
4794 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
4795 | BFD_ASSERT (h != NULL); |
4796 | if (h != NULL | |
4797 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 4798 | return FALSE; |
5bd4f169 AM |
4799 | break; |
4800 | ||
721956f4 AM |
4801 | case R_PPC64_REL14: |
4802 | case R_PPC64_REL14_BRTAKEN: | |
4803 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4804 | { |
4805 | asection *dest = NULL; | |
4806 | ||
4807 | /* Heuristic: If jumping outside our section, chances are | |
4808 | we are going to need a stub. */ | |
4809 | if (h != NULL) | |
4810 | { | |
4811 | /* If the sym is weak it may be overridden later, so | |
4812 | don't assume we know where a weak sym lives. */ | |
4813 | if (h->root.type == bfd_link_hash_defined) | |
4814 | dest = h->root.u.def.section; | |
4815 | } | |
4816 | else | |
4817 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4818 | sec, r_symndx); | |
4819 | if (dest != sec) | |
7c8fe5c4 | 4820 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4821 | } |
721956f4 AM |
4822 | /* Fall through. */ |
4823 | ||
5d1634d7 | 4824 | case R_PPC64_REL24: |
8387904d | 4825 | if (h != NULL) |
5d1634d7 AM |
4826 | { |
4827 | /* We may need a .plt entry if the function this reloc | |
4828 | refers to is in a shared lib. */ | |
411e1bfb AM |
4829 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4830 | rel->r_addend)) | |
4831 | return FALSE; | |
8387904d AM |
4832 | if (h == &htab->tls_get_addr->elf |
4833 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4834 | sec->has_tls_reloc = 1; |
8387904d | 4835 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4836 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4837 | && (h->root.root.string[15] == 0 |
4838 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4839 | { |
8387904d AM |
4840 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4841 | sec->has_tls_reloc = 1; | |
4842 | } | |
4843 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4844 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4845 | && (h->root.root.string[14] == 0 |
4846 | || h->root.root.string[14] == '@')) | |
4847 | { | |
4848 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4849 | sec->has_tls_reloc = 1; |
4850 | } | |
4851 | } | |
4852 | break; | |
4853 | ||
4854 | case R_PPC64_TPREL64: | |
4855 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 4856 | if (!info->executable) |
411e1bfb AM |
4857 | info->flags |= DF_STATIC_TLS; |
4858 | goto dotlstoc; | |
4859 | ||
4860 | case R_PPC64_DTPMOD64: | |
4861 | if (rel + 1 < rel_end | |
4862 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4863 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4864 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4865 | else |
951fd09b | 4866 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4867 | goto dotlstoc; |
4868 | ||
4869 | case R_PPC64_DTPREL64: | |
4870 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4871 | if (rel != relocs | |
4872 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4873 | && rel[-1].r_offset == rel->r_offset - 8) | |
4874 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4875 | Don't mark with TLS_DTPREL. */ | |
4876 | goto dodyn; | |
4877 | ||
4878 | dotlstoc: | |
4879 | sec->has_tls_reloc = 1; | |
4880 | if (h != NULL) | |
4881 | { | |
4882 | struct ppc_link_hash_entry *eh; | |
4883 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4884 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4885 | } |
4886 | else | |
4887 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4888 | rel->r_addend, tls_type)) | |
4889 | return FALSE; | |
4890 | ||
7c8fe5c4 AM |
4891 | ppc64_sec = ppc64_elf_section_data (sec); |
4892 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4893 | { |
e7b938ca | 4894 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4895 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4896 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4897 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4898 | return FALSE; |
7c8fe5c4 AM |
4899 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4900 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4901 | } |
4902 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4903 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4904 | |
4905 | /* Mark the second slot of a GD or LD entry. | |
4906 | -1 to indicate GD and -2 to indicate LD. */ | |
4907 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4908 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4909 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4910 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4911 | goto dodyn; |
4912 | ||
4913 | case R_PPC64_TPREL16: | |
4914 | case R_PPC64_TPREL16_LO: | |
4915 | case R_PPC64_TPREL16_HI: | |
4916 | case R_PPC64_TPREL16_HA: | |
4917 | case R_PPC64_TPREL16_DS: | |
4918 | case R_PPC64_TPREL16_LO_DS: | |
4919 | case R_PPC64_TPREL16_HIGHER: | |
4920 | case R_PPC64_TPREL16_HIGHERA: | |
4921 | case R_PPC64_TPREL16_HIGHEST: | |
4922 | case R_PPC64_TPREL16_HIGHESTA: | |
4923 | if (info->shared) | |
4924 | { | |
1d483afe AM |
4925 | if (!info->executable) |
4926 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 4927 | goto dodyn; |
5d1634d7 AM |
4928 | } |
4929 | break; | |
4930 | ||
e86ce104 | 4931 | case R_PPC64_ADDR64: |
1e2f5b6e | 4932 | if (opd_sym_map != NULL |
1e2f5b6e | 4933 | && rel + 1 < rel_end |
4ce794b7 | 4934 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4935 | { |
8387904d AM |
4936 | if (h != NULL) |
4937 | { | |
4938 | if (h->root.root.string[0] == '.' | |
4939 | && h->root.root.string[1] != 0 | |
4940 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4941 | ; | |
4942 | else | |
4943 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4944 | } | |
4945 | else | |
4946 | { | |
4947 | asection *s; | |
1e2f5b6e | 4948 | |
8387904d AM |
4949 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4950 | r_symndx); | |
4951 | if (s == NULL) | |
4952 | return FALSE; | |
4953 | else if (s != sec) | |
3f764659 | 4954 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4955 | } |
1e2f5b6e | 4956 | } |
e86ce104 AM |
4957 | /* Fall through. */ |
4958 | ||
04c9666a | 4959 | case R_PPC64_REL30: |
5bd4f169 | 4960 | case R_PPC64_REL32: |
04c9666a | 4961 | case R_PPC64_REL64: |
65f38f15 AM |
4962 | case R_PPC64_ADDR14: |
4963 | case R_PPC64_ADDR14_BRNTAKEN: | |
4964 | case R_PPC64_ADDR14_BRTAKEN: | |
4965 | case R_PPC64_ADDR16: | |
4966 | case R_PPC64_ADDR16_DS: | |
4967 | case R_PPC64_ADDR16_HA: | |
4968 | case R_PPC64_ADDR16_HI: | |
4969 | case R_PPC64_ADDR16_HIGHER: | |
4970 | case R_PPC64_ADDR16_HIGHERA: | |
4971 | case R_PPC64_ADDR16_HIGHEST: | |
4972 | case R_PPC64_ADDR16_HIGHESTA: | |
4973 | case R_PPC64_ADDR16_LO: | |
4974 | case R_PPC64_ADDR16_LO_DS: | |
4975 | case R_PPC64_ADDR24: | |
65f38f15 | 4976 | case R_PPC64_ADDR32: |
65f38f15 AM |
4977 | case R_PPC64_UADDR16: |
4978 | case R_PPC64_UADDR32: | |
4979 | case R_PPC64_UADDR64: | |
5bd4f169 | 4980 | case R_PPC64_TOC: |
81848ca0 AM |
4981 | if (h != NULL && !info->shared) |
4982 | /* We may need a copy reloc. */ | |
f5385ebf | 4983 | h->non_got_ref = 1; |
81848ca0 | 4984 | |
41bd81ab | 4985 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4986 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4987 | break; |
e86ce104 | 4988 | |
65f38f15 AM |
4989 | /* If we are creating a shared library, and this is a reloc |
4990 | against a global symbol, or a non PC relative reloc | |
4991 | against a local symbol, then we need to copy the reloc | |
4992 | into the shared library. However, if we are linking with | |
4993 | -Bsymbolic, we do not need to copy a reloc against a | |
4994 | global symbol which is defined in an object we are | |
4995 | including in the link (i.e., DEF_REGULAR is set). At | |
4996 | this point we have not seen all the input files, so it is | |
4997 | possible that DEF_REGULAR is not set now but will be set | |
4998 | later (it is never cleared). In case of a weak definition, | |
4999 | DEF_REGULAR may be cleared later by a strong definition in | |
5000 | a shared library. We account for that possibility below by | |
f4656909 | 5001 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5002 | table entry. A similar situation occurs when creating |
5003 | shared libraries and symbol visibility changes render the | |
5004 | symbol local. | |
5005 | ||
5006 | If on the other hand, we are creating an executable, we | |
5007 | may need to keep relocations for symbols satisfied by a | |
5008 | dynamic library if we manage to avoid copy relocs for the | |
5009 | symbol. */ | |
411e1bfb | 5010 | dodyn: |
65f38f15 | 5011 | if ((info->shared |
1d483afe | 5012 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5013 | || (h != NULL |
5014 | && (! info->symbolic | |
5015 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5016 | || !h->def_regular)))) |
f4656909 AM |
5017 | || (ELIMINATE_COPY_RELOCS |
5018 | && !info->shared | |
65f38f15 AM |
5019 | && h != NULL |
5020 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5021 | || !h->def_regular))) |
5bd4f169 | 5022 | { |
ec338859 AM |
5023 | struct ppc_dyn_relocs *p; |
5024 | struct ppc_dyn_relocs **head; | |
5025 | ||
65f38f15 AM |
5026 | /* We must copy these reloc types into the output file. |
5027 | Create a reloc section in dynobj and make room for | |
5028 | this reloc. */ | |
5bd4f169 AM |
5029 | if (sreloc == NULL) |
5030 | { | |
5031 | const char *name; | |
65f38f15 | 5032 | bfd *dynobj; |
5bd4f169 AM |
5033 | |
5034 | name = (bfd_elf_string_from_elf_section | |
5035 | (abfd, | |
5036 | elf_elfheader (abfd)->e_shstrndx, | |
5037 | elf_section_data (sec)->rel_hdr.sh_name)); | |
5038 | if (name == NULL) | |
b34976b6 | 5039 | return FALSE; |
5bd4f169 | 5040 | |
0112cd26 | 5041 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
5042 | || strcmp (bfd_get_section_name (abfd, sec), |
5043 | name + 5) != 0) | |
5044 | { | |
5045 | (*_bfd_error_handler) | |
d003868e AM |
5046 | (_("%B: bad relocation section name `%s\'"), |
5047 | abfd, name); | |
5d1634d7 | 5048 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
5049 | } |
5050 | ||
65f38f15 | 5051 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
5052 | sreloc = bfd_get_section_by_name (dynobj, name); |
5053 | if (sreloc == NULL) | |
5054 | { | |
5055 | flagword flags; | |
5056 | ||
5bd4f169 | 5057 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
5058 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
5059 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
5060 | sreloc = bfd_make_section_with_flags (dynobj, |
5061 | name, | |
5062 | flags); | |
5bd4f169 | 5063 | if (sreloc == NULL |
65f38f15 | 5064 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 5065 | return FALSE; |
5bd4f169 | 5066 | } |
65f38f15 | 5067 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
5068 | } |
5069 | ||
65f38f15 AM |
5070 | /* If this is a global symbol, we count the number of |
5071 | relocations we need for this symbol. */ | |
5072 | if (h != NULL) | |
5073 | { | |
ec338859 | 5074 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5075 | } |
5076 | else | |
5077 | { | |
ec338859 AM |
5078 | /* Track dynamic relocs needed for local syms too. |
5079 | We really need local syms available to do this | |
5080 | easily. Oh well. */ | |
5081 | ||
5082 | asection *s; | |
6edfbbad DJ |
5083 | void *vpp; |
5084 | ||
ec338859 AM |
5085 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
5086 | sec, r_symndx); | |
5087 | if (s == NULL) | |
b34976b6 | 5088 | return FALSE; |
ec338859 | 5089 | |
6edfbbad DJ |
5090 | vpp = &elf_section_data (s)->local_dynrel; |
5091 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 5092 | } |
ec338859 AM |
5093 | |
5094 | p = *head; | |
5095 | if (p == NULL || p->sec != sec) | |
5096 | { | |
4ce794b7 | 5097 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5098 | if (p == NULL) |
b34976b6 | 5099 | return FALSE; |
ec338859 AM |
5100 | p->next = *head; |
5101 | *head = p; | |
5102 | p->sec = sec; | |
5103 | p->count = 0; | |
5104 | p->pc_count = 0; | |
5105 | } | |
5106 | ||
5107 | p->count += 1; | |
1d483afe | 5108 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5109 | p->pc_count += 1; |
65f38f15 | 5110 | } |
5bd4f169 | 5111 | break; |
65f38f15 AM |
5112 | |
5113 | default: | |
96e0dda4 | 5114 | break; |
5bd4f169 AM |
5115 | } |
5116 | } | |
5117 | ||
b34976b6 | 5118 | return TRUE; |
5bd4f169 AM |
5119 | } |
5120 | ||
8387904d AM |
5121 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5122 | of the code entry point, and its section. */ | |
5123 | ||
5124 | static bfd_vma | |
5125 | opd_entry_value (asection *opd_sec, | |
5126 | bfd_vma offset, | |
5127 | asection **code_sec, | |
5128 | bfd_vma *code_off) | |
5129 | { | |
5130 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5131 | Elf_Internal_Rela *relocs; |
8387904d | 5132 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5133 | bfd_vma val; |
8387904d | 5134 | |
4b85d634 AM |
5135 | /* No relocs implies we are linking a --just-symbols object. */ |
5136 | if (opd_sec->reloc_count == 0) | |
5137 | { | |
5138 | bfd_vma val; | |
5139 | ||
5140 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
5141 | return (bfd_vma) -1; | |
3b36f7e6 | 5142 | |
4b85d634 AM |
5143 | if (code_sec != NULL) |
5144 | { | |
5145 | asection *sec, *likely = NULL; | |
5146 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5147 | if (sec->vma <= val | |
5148 | && (sec->flags & SEC_LOAD) != 0 | |
5149 | && (sec->flags & SEC_ALLOC) != 0) | |
5150 | likely = sec; | |
5151 | if (likely != NULL) | |
5152 | { | |
5153 | *code_sec = likely; | |
5154 | if (code_off != NULL) | |
5155 | *code_off = val - likely->vma; | |
5156 | } | |
5157 | } | |
5158 | return val; | |
5159 | } | |
5160 | ||
0c8d6e5c | 5161 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5162 | |
8860955f AM |
5163 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5164 | if (relocs == NULL) | |
5165 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5166 | |
8387904d | 5167 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5168 | lo = relocs; |
8387904d AM |
5169 | BFD_ASSERT (lo != NULL); |
5170 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5171 | val = (bfd_vma) -1; |
8387904d AM |
5172 | while (lo < hi) |
5173 | { | |
5174 | look = lo + (hi - lo) / 2; | |
5175 | if (look->r_offset < offset) | |
5176 | lo = look + 1; | |
5177 | else if (look->r_offset > offset) | |
5178 | hi = look; | |
5179 | else | |
5180 | { | |
0ffa91dd NC |
5181 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5182 | ||
8387904d AM |
5183 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5184 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5185 | { | |
5186 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5187 | asection *sec; |
5188 | ||
5189 | if (symndx < symtab_hdr->sh_info) | |
5190 | { | |
5191 | Elf_Internal_Sym *sym; | |
5192 | ||
5193 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5194 | if (sym == NULL) | |
5195 | { | |
5196 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5197 | symtab_hdr->sh_info, | |
5198 | 0, NULL, NULL, NULL); | |
5199 | if (sym == NULL) | |
645ea6a9 | 5200 | break; |
8387904d AM |
5201 | symtab_hdr->contents = (bfd_byte *) sym; |
5202 | } | |
5203 | ||
5204 | sym += symndx; | |
5205 | val = sym->st_value; | |
cb33740c | 5206 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5207 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5208 | } | |
5209 | else | |
5210 | { | |
5211 | struct elf_link_hash_entry **sym_hashes; | |
5212 | struct elf_link_hash_entry *rh; | |
5213 | ||
5214 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5215 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5216 | while (rh->root.type == bfd_link_hash_indirect | |
5217 | || rh->root.type == bfd_link_hash_warning) | |
5218 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5219 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5220 | || rh->root.type == bfd_link_hash_defweak); | |
5221 | val = rh->root.u.def.value; | |
5222 | sec = rh->root.u.def.section; | |
5223 | } | |
5224 | val += look->r_addend; | |
5225 | if (code_off != NULL) | |
5226 | *code_off = val; | |
5227 | if (code_sec != NULL) | |
5228 | *code_sec = sec; | |
5229 | if (sec != NULL && sec->output_section != NULL) | |
5230 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5231 | } |
5232 | break; | |
5233 | } | |
5234 | } | |
645ea6a9 | 5235 | |
645ea6a9 | 5236 | return val; |
8387904d AM |
5237 | } |
5238 | ||
74f0fb50 AM |
5239 | /* Mark all our entry sym sections, both opd and code section. */ |
5240 | ||
5241 | static void | |
5242 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5243 | { | |
5244 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5245 | struct bfd_sym_chain *sym; | |
5246 | ||
5247 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
5248 | { | |
5249 | struct ppc_link_hash_entry *eh; | |
5250 | asection *sec; | |
5251 | ||
5252 | eh = (struct ppc_link_hash_entry *) | |
5253 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5254 | if (eh == NULL) | |
5255 | continue; | |
5256 | if (eh->elf.root.type != bfd_link_hash_defined | |
5257 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5258 | continue; | |
5259 | ||
5260 | if (eh->is_func_descriptor | |
5261 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5262 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5263 | { | |
5264 | sec = eh->oh->elf.root.u.def.section; | |
5265 | sec->flags |= SEC_KEEP; | |
5266 | } | |
5267 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5268 | && opd_entry_value (eh->elf.root.u.def.section, | |
5269 | eh->elf.root.u.def.value, | |
5270 | &sec, NULL) != (bfd_vma) -1) | |
5271 | sec->flags |= SEC_KEEP; | |
5272 | ||
5273 | sec = eh->elf.root.u.def.section; | |
5274 | sec->flags |= SEC_KEEP; | |
5275 | } | |
5276 | } | |
5277 | ||
64d03ab5 AM |
5278 | /* Mark sections containing dynamically referenced symbols. When |
5279 | building shared libraries, we must assume that any visible symbol is | |
5280 | referenced. */ | |
5281 | ||
5282 | static bfd_boolean | |
5283 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5284 | { | |
5285 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5286 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5287 | ||
5288 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5289 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5290 | ||
5291 | /* Dynamic linking info is on the func descriptor sym. */ | |
5292 | if (eh->oh != NULL | |
5293 | && eh->oh->is_func_descriptor | |
5294 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5295 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5296 | eh = eh->oh; | |
5297 | ||
5298 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5299 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5300 | && (eh->elf.ref_dynamic | |
5301 | || (!info->executable | |
5302 | && eh->elf.def_regular | |
5303 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5304 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5305 | { | |
5306 | asection *code_sec; | |
5307 | ||
5308 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5309 | ||
5310 | /* Function descriptor syms cause the associated | |
5311 | function code sym section to be marked. */ | |
5312 | if (eh->is_func_descriptor | |
5313 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5314 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5315 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5316 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5317 | && opd_entry_value (eh->elf.root.u.def.section, | |
5318 | eh->elf.root.u.def.value, | |
5319 | &code_sec, NULL) != (bfd_vma) -1) | |
5320 | code_sec->flags |= SEC_KEEP; | |
5321 | } | |
5322 | ||
5323 | return TRUE; | |
5324 | } | |
5325 | ||
5bd4f169 AM |
5326 | /* Return the section that should be marked against GC for a given |
5327 | relocation. */ | |
5328 | ||
5329 | static asection * | |
4ce794b7 | 5330 | ppc64_elf_gc_mark_hook (asection *sec, |
74f0fb50 | 5331 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4ce794b7 AM |
5332 | Elf_Internal_Rela *rel, |
5333 | struct elf_link_hash_entry *h, | |
5334 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5335 | { |
ccfa59ea AM |
5336 | asection *rsec; |
5337 | ||
ccfa59ea AM |
5338 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5339 | function sections, as all functions are referenced in .opd. */ | |
5340 | rsec = NULL; | |
5341 | if (get_opd_info (sec) != NULL) | |
5342 | return rsec; | |
1e2f5b6e | 5343 | |
5bd4f169 AM |
5344 | if (h != NULL) |
5345 | { | |
04c9666a | 5346 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5347 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5348 | |
4ce794b7 | 5349 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5350 | switch (r_type) |
5bd4f169 AM |
5351 | { |
5352 | case R_PPC64_GNU_VTINHERIT: | |
5353 | case R_PPC64_GNU_VTENTRY: | |
5354 | break; | |
5355 | ||
5356 | default: | |
5357 | switch (h->root.type) | |
5358 | { | |
5359 | case bfd_link_hash_defined: | |
5360 | case bfd_link_hash_defweak: | |
ccfa59ea | 5361 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5362 | if (eh->oh != NULL |
5363 | && eh->oh->is_func_descriptor | |
5364 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5365 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5366 | eh = eh->oh; |
1e2f5b6e AM |
5367 | |
5368 | /* Function descriptor syms cause the associated | |
5369 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5370 | if (eh->is_func_descriptor |
5371 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5372 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5373 | { |
5374 | /* They also mark their opd section. */ | |
74f0fb50 | 5375 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea AM |
5376 | |
5377 | rsec = eh->oh->elf.root.u.def.section; | |
5378 | } | |
8387904d AM |
5379 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5380 | && opd_entry_value (eh->elf.root.u.def.section, | |
5381 | eh->elf.root.u.def.value, | |
5382 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5383 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5384 | else |
1e2f5b6e AM |
5385 | rsec = h->root.u.def.section; |
5386 | break; | |
5bd4f169 AM |
5387 | |
5388 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5389 | rsec = h->root.u.c.p->section; |
5390 | break; | |
5bd4f169 AM |
5391 | |
5392 | default: | |
5393 | break; | |
5394 | } | |
5395 | } | |
5396 | } | |
5397 | else | |
5398 | { | |
74f0fb50 | 5399 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5400 | |
5401 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5402 | opd = get_opd_info (rsec); |
5403 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5404 | { |
74f0fb50 | 5405 | rsec->gc_mark = 1; |
ccfa59ea | 5406 | |
74f0fb50 | 5407 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5408 | } |
5bd4f169 AM |
5409 | } |
5410 | ||
1e2f5b6e | 5411 | return rsec; |
5bd4f169 AM |
5412 | } |
5413 | ||
65f38f15 AM |
5414 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5415 | section being removed. */ | |
5bd4f169 | 5416 | |
b34976b6 | 5417 | static bfd_boolean |
4ce794b7 AM |
5418 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5419 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5420 | { |
411e1bfb | 5421 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5422 | Elf_Internal_Shdr *symtab_hdr; |
5423 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5424 | struct got_entry **local_got_ents; |
5bd4f169 | 5425 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5426 | |
7dda2462 TG |
5427 | if (info->relocatable) |
5428 | return TRUE; | |
5429 | ||
680a3378 AM |
5430 | if ((sec->flags & SEC_ALLOC) == 0) |
5431 | return TRUE; | |
5432 | ||
ec338859 AM |
5433 | elf_section_data (sec)->local_dynrel = NULL; |
5434 | ||
411e1bfb | 5435 | htab = ppc_hash_table (info); |
0ffa91dd | 5436 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5437 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5438 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5439 | |
5440 | relend = relocs + sec->reloc_count; | |
5441 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5442 | { |
5443 | unsigned long r_symndx; | |
04c9666a | 5444 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5445 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5446 | char tls_type = 0; |
5bd4f169 | 5447 | |
a33d1f77 | 5448 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5449 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5450 | if (r_symndx >= symtab_hdr->sh_info) |
5451 | { | |
5452 | struct ppc_link_hash_entry *eh; | |
5453 | struct ppc_dyn_relocs **pp; | |
5454 | struct ppc_dyn_relocs *p; | |
5455 | ||
5456 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5457 | while (h->root.type == bfd_link_hash_indirect |
5458 | || h->root.type == bfd_link_hash_warning) | |
5459 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5460 | eh = (struct ppc_link_hash_entry *) h; |
5461 | ||
5462 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5463 | if (p->sec == sec) | |
5464 | { | |
5465 | /* Everything must go for SEC. */ | |
5466 | *pp = p->next; | |
5467 | break; | |
5468 | } | |
5469 | } | |
5470 | ||
a33d1f77 AM |
5471 | switch (r_type) |
5472 | { | |
411e1bfb AM |
5473 | case R_PPC64_GOT_TLSLD16: |
5474 | case R_PPC64_GOT_TLSLD16_LO: | |
5475 | case R_PPC64_GOT_TLSLD16_HI: | |
5476 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5477 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5478 | goto dogot; |
5479 | ||
5480 | case R_PPC64_GOT_TLSGD16: | |
5481 | case R_PPC64_GOT_TLSGD16_LO: | |
5482 | case R_PPC64_GOT_TLSGD16_HI: | |
5483 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5484 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5485 | goto dogot; |
5486 | ||
5487 | case R_PPC64_GOT_TPREL16_DS: | |
5488 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5489 | case R_PPC64_GOT_TPREL16_HI: | |
5490 | case R_PPC64_GOT_TPREL16_HA: | |
5491 | tls_type = TLS_TLS | TLS_TPREL; | |
5492 | goto dogot; | |
5493 | ||
5494 | case R_PPC64_GOT_DTPREL16_DS: | |
5495 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5496 | case R_PPC64_GOT_DTPREL16_HI: | |
5497 | case R_PPC64_GOT_DTPREL16_HA: | |
5498 | tls_type = TLS_TLS | TLS_DTPREL; | |
5499 | goto dogot; | |
5500 | ||
a33d1f77 AM |
5501 | case R_PPC64_GOT16: |
5502 | case R_PPC64_GOT16_DS: | |
5503 | case R_PPC64_GOT16_HA: | |
5504 | case R_PPC64_GOT16_HI: | |
5505 | case R_PPC64_GOT16_LO: | |
5506 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5507 | dogot: |
5508 | { | |
5509 | struct got_entry *ent; | |
5510 | ||
58ac9f71 AM |
5511 | if (h != NULL) |
5512 | ent = h->got.glist; | |
411e1bfb AM |
5513 | else |
5514 | ent = local_got_ents[r_symndx]; | |
5515 | ||
5516 | for (; ent != NULL; ent = ent->next) | |
5517 | if (ent->addend == rel->r_addend | |
e717da7e | 5518 | && ent->owner == abfd |
411e1bfb AM |
5519 | && ent->tls_type == tls_type) |
5520 | break; | |
5521 | if (ent == NULL) | |
5522 | abort (); | |
5523 | if (ent->got.refcount > 0) | |
5524 | ent->got.refcount -= 1; | |
5525 | } | |
a33d1f77 | 5526 | break; |
65f38f15 | 5527 | |
a33d1f77 AM |
5528 | case R_PPC64_PLT16_HA: |
5529 | case R_PPC64_PLT16_HI: | |
5530 | case R_PPC64_PLT16_LO: | |
5531 | case R_PPC64_PLT32: | |
5532 | case R_PPC64_PLT64: | |
721956f4 AM |
5533 | case R_PPC64_REL14: |
5534 | case R_PPC64_REL14_BRNTAKEN: | |
5535 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5536 | case R_PPC64_REL24: |
58ac9f71 | 5537 | if (h != NULL) |
5d1634d7 | 5538 | { |
411e1bfb AM |
5539 | struct plt_entry *ent; |
5540 | ||
411e1bfb AM |
5541 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5542 | if (ent->addend == rel->r_addend) | |
5543 | break; | |
5544 | if (ent == NULL) | |
5545 | abort (); | |
5546 | if (ent->plt.refcount > 0) | |
5547 | ent->plt.refcount -= 1; | |
5d1634d7 | 5548 | } |
e86ce104 | 5549 | break; |
5d1634d7 | 5550 | |
a33d1f77 AM |
5551 | default: |
5552 | break; | |
5553 | } | |
5554 | } | |
b34976b6 | 5555 | return TRUE; |
5bd4f169 AM |
5556 | } |
5557 | ||
deb0e272 AM |
5558 | /* The maximum size of .sfpr. */ |
5559 | #define SFPR_MAX (218*4) | |
5560 | ||
5561 | struct sfpr_def_parms | |
5562 | { | |
699733f6 AM |
5563 | const char name[12]; |
5564 | unsigned char lo, hi; | |
deb0e272 AM |
5565 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5566 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5567 | }; | |
5568 | ||
5569 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5570 | ||
5571 | static unsigned int | |
5572 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5573 | { | |
5574 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5575 | unsigned int i; | |
5576 | size_t len = strlen (parm->name); | |
5577 | bfd_boolean writing = FALSE; | |
699733f6 | 5578 | char sym[16]; |
deb0e272 AM |
5579 | |
5580 | memcpy (sym, parm->name, len); | |
5581 | sym[len + 2] = 0; | |
5582 | ||
5583 | for (i = parm->lo; i <= parm->hi; i++) | |
5584 | { | |
5585 | struct elf_link_hash_entry *h; | |
5586 | ||
5587 | sym[len + 0] = i / 10 + '0'; | |
5588 | sym[len + 1] = i % 10 + '0'; | |
5589 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5590 | if (h != NULL | |
f5385ebf | 5591 | && !h->def_regular) |
deb0e272 AM |
5592 | { |
5593 | h->root.type = bfd_link_hash_defined; | |
5594 | h->root.u.def.section = htab->sfpr; | |
5595 | h->root.u.def.value = htab->sfpr->size; | |
5596 | h->type = STT_FUNC; | |
f5385ebf | 5597 | h->def_regular = 1; |
deb0e272 AM |
5598 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5599 | writing = TRUE; | |
5600 | if (htab->sfpr->contents == NULL) | |
5601 | { | |
5602 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5603 | if (htab->sfpr->contents == NULL) | |
5604 | return FALSE; | |
5605 | } | |
5606 | } | |
5607 | if (writing) | |
5608 | { | |
5609 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5610 | if (i != parm->hi) | |
5611 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5612 | else | |
5613 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5614 | htab->sfpr->size = p - htab->sfpr->contents; | |
5615 | } | |
5616 | } | |
5617 | ||
5618 | return TRUE; | |
5619 | } | |
5620 | ||
5621 | static bfd_byte * | |
5622 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5623 | { | |
5624 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5625 | return p + 4; | |
5626 | } | |
5627 | ||
5628 | static bfd_byte * | |
5629 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5630 | { | |
5631 | p = savegpr0 (abfd, p, r); | |
5632 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5633 | p = p + 4; | |
5634 | bfd_put_32 (abfd, BLR, p); | |
5635 | return p + 4; | |
5636 | } | |
5637 | ||
5638 | static bfd_byte * | |
5639 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5640 | { | |
5641 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5642 | return p + 4; | |
5643 | } | |
5644 | ||
5645 | static bfd_byte * | |
5646 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5647 | { | |
5648 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5649 | p = p + 4; | |
5650 | p = restgpr0 (abfd, p, r); | |
5651 | bfd_put_32 (abfd, MTLR_R0, p); | |
5652 | p = p + 4; | |
5653 | if (r == 29) | |
5654 | { | |
5655 | p = restgpr0 (abfd, p, 30); | |
5656 | p = restgpr0 (abfd, p, 31); | |
5657 | } | |
5658 | bfd_put_32 (abfd, BLR, p); | |
5659 | return p + 4; | |
5660 | } | |
5661 | ||
5662 | static bfd_byte * | |
5663 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5664 | { | |
5665 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5666 | return p + 4; | |
5667 | } | |
5668 | ||
5669 | static bfd_byte * | |
5670 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5671 | { | |
5672 | p = savegpr1 (abfd, p, r); | |
5673 | bfd_put_32 (abfd, BLR, p); | |
5674 | return p + 4; | |
5675 | } | |
5676 | ||
5677 | static bfd_byte * | |
5678 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5679 | { | |
5680 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5681 | return p + 4; | |
5682 | } | |
5683 | ||
5684 | static bfd_byte * | |
5685 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5686 | { | |
5687 | p = restgpr1 (abfd, p, r); | |
5688 | bfd_put_32 (abfd, BLR, p); | |
5689 | return p + 4; | |
5690 | } | |
5691 | ||
5692 | static bfd_byte * | |
5693 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5694 | { | |
5695 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5696 | return p + 4; | |
5697 | } | |
5698 | ||
5699 | static bfd_byte * | |
5700 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5701 | { | |
5702 | p = savefpr (abfd, p, r); | |
5703 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5704 | p = p + 4; | |
5705 | bfd_put_32 (abfd, BLR, p); | |
5706 | return p + 4; | |
5707 | } | |
5708 | ||
5709 | static bfd_byte * | |
5710 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5711 | { | |
5712 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5713 | return p + 4; | |
5714 | } | |
5715 | ||
5716 | static bfd_byte * | |
5717 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5718 | { | |
5719 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5720 | p = p + 4; | |
5721 | p = restfpr (abfd, p, r); | |
5722 | bfd_put_32 (abfd, MTLR_R0, p); | |
5723 | p = p + 4; | |
5724 | if (r == 29) | |
5725 | { | |
5726 | p = restfpr (abfd, p, 30); | |
5727 | p = restfpr (abfd, p, 31); | |
5728 | } | |
5729 | bfd_put_32 (abfd, BLR, p); | |
5730 | return p + 4; | |
5731 | } | |
5732 | ||
5733 | static bfd_byte * | |
5734 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5735 | { | |
5736 | p = savefpr (abfd, p, r); | |
5737 | bfd_put_32 (abfd, BLR, p); | |
5738 | return p + 4; | |
5739 | } | |
5740 | ||
5741 | static bfd_byte * | |
5742 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5743 | { | |
5744 | p = restfpr (abfd, p, r); | |
5745 | bfd_put_32 (abfd, BLR, p); | |
5746 | return p + 4; | |
5747 | } | |
5748 | ||
5749 | static bfd_byte * | |
5750 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5751 | { | |
5752 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5753 | p = p + 4; | |
5754 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5755 | return p + 4; | |
5756 | } | |
5757 | ||
5758 | static bfd_byte * | |
5759 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5760 | { | |
5761 | p = savevr (abfd, p, r); | |
5762 | bfd_put_32 (abfd, BLR, p); | |
5763 | return p + 4; | |
5764 | } | |
5765 | ||
5766 | static bfd_byte * | |
5767 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5768 | { | |
5769 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5770 | p = p + 4; | |
5771 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5772 | return p + 4; | |
5773 | } | |
5774 | ||
5775 | static bfd_byte * | |
5776 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5777 | { | |
5778 | p = restvr (abfd, p, r); | |
5779 | bfd_put_32 (abfd, BLR, p); | |
5780 | return p + 4; | |
5781 | } | |
5782 | ||
e86ce104 AM |
5783 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5784 | information on function code symbol entries to their corresponding | |
5785 | function descriptor symbol entries. */ | |
deb0e272 | 5786 | |
b34976b6 | 5787 | static bfd_boolean |
4ce794b7 | 5788 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5789 | { |
e86ce104 | 5790 | struct bfd_link_info *info; |
65f38f15 | 5791 | struct ppc_link_hash_table *htab; |
411e1bfb | 5792 | struct plt_entry *ent; |
50bc7936 AM |
5793 | struct ppc_link_hash_entry *fh; |
5794 | struct ppc_link_hash_entry *fdh; | |
5795 | bfd_boolean force_local; | |
5bd4f169 | 5796 | |
50bc7936 AM |
5797 | fh = (struct ppc_link_hash_entry *) h; |
5798 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5799 | return TRUE; |
e86ce104 | 5800 | |
50bc7936 AM |
5801 | if (fh->elf.root.type == bfd_link_hash_warning) |
5802 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5803 | |
4ce794b7 | 5804 | info = inf; |
65f38f15 | 5805 | htab = ppc_hash_table (info); |
5bd4f169 | 5806 | |
c09bdfe5 AM |
5807 | /* Resolve undefined references to dot-symbols as the value |
5808 | in the function descriptor, if we have one in a regular object. | |
5809 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5810 | in dynamic objects are handled elsewhere. */ | |
5811 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5812 | && fh->was_undefined | |
5813 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5814 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5815 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5816 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5817 | fh->oh->elf.root.u.def.value, | |
5818 | &fh->elf.root.u.def.section, | |
5819 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5820 | { | |
5821 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5822 | fh->elf.forced_local = 1; |
2b953679 AM |
5823 | fh->elf.def_regular = fh->oh->elf.def_regular; |
5824 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
c09bdfe5 AM |
5825 | } |
5826 | ||
e86ce104 AM |
5827 | /* If this is a function code symbol, transfer dynamic linking |
5828 | information to the function descriptor symbol. */ | |
50bc7936 | 5829 | if (!fh->is_func) |
b34976b6 | 5830 | return TRUE; |
e86ce104 | 5831 | |
50bc7936 | 5832 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5833 | if (ent->plt.refcount > 0) |
5834 | break; | |
50bc7936 AM |
5835 | if (ent == NULL |
5836 | || fh->elf.root.root.string[0] != '.' | |
5837 | || fh->elf.root.root.string[1] == '\0') | |
5838 | return TRUE; | |
5bd4f169 | 5839 | |
50bc7936 AM |
5840 | /* Find the corresponding function descriptor symbol. Create it |
5841 | as undefined if necessary. */ | |
5bd4f169 | 5842 | |
50bc7936 AM |
5843 | fdh = get_fdh (fh, htab); |
5844 | if (fdh != NULL) | |
5845 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5846 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5847 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5848 | |
50bc7936 AM |
5849 | if (fdh == NULL |
5850 | && info->shared | |
5851 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5852 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5853 | { | |
908b32fc | 5854 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5855 | if (fdh == NULL) |
5856 | return FALSE; | |
50bc7936 | 5857 | } |
648cca2c | 5858 | |
908b32fc | 5859 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5860 | code symbol is strong undefined, make the fake sym the same. |
5861 | If the function code symbol is defined, then force the fake | |
5862 | descriptor local; We can't support overriding of symbols in a | |
5863 | shared library on a fake descriptor. */ | |
908b32fc AM |
5864 | |
5865 | if (fdh != NULL | |
5866 | && fdh->fake | |
433817dd | 5867 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5868 | { |
433817dd AM |
5869 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5870 | { | |
5871 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5872 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5873 | } | |
5874 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5875 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5876 | { | |
5877 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5878 | } | |
908b32fc AM |
5879 | } |
5880 | ||
50bc7936 | 5881 | if (fdh != NULL |
f5385ebf | 5882 | && !fdh->elf.forced_local |
50bc7936 | 5883 | && (info->shared |
f5385ebf AM |
5884 | || fdh->elf.def_dynamic |
5885 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5886 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5887 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5888 | { | |
5889 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5890 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5891 | return FALSE; |
f5385ebf AM |
5892 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5893 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5894 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5895 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5896 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5897 | { |
40d16e0b | 5898 | move_plt_plist (fh, fdh); |
f5385ebf | 5899 | fdh->elf.needs_plt = 1; |
e86ce104 | 5900 | } |
50bc7936 | 5901 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5902 | fdh->oh = fh; |
5903 | fh->oh = fdh; | |
e86ce104 AM |
5904 | } |
5905 | ||
50bc7936 AM |
5906 | /* Now that the info is on the function descriptor, clear the |
5907 | function code sym info. Any function code syms for which we | |
5908 | don't have a definition in a regular file, we force local. | |
5909 | This prevents a shared library from exporting syms that have | |
5910 | been imported from another library. Function code syms that | |
5911 | are really in the library we must leave global to prevent the | |
5912 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5913 | force_local = (!fh->elf.def_regular |
5914 | || fdh == NULL | |
5915 | || !fdh->elf.def_regular | |
5916 | || fdh->elf.forced_local); | |
50bc7936 AM |
5917 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5918 | ||
b34976b6 | 5919 | return TRUE; |
e86ce104 | 5920 | } |
40b8271b | 5921 | |
e86ce104 | 5922 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5923 | this hook to a) provide some gcc support functions, and b) transfer |
5924 | dynamic linking information gathered so far on function code symbol | |
5925 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5926 | |
b34976b6 | 5927 | static bfd_boolean |
4ce794b7 AM |
5928 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5929 | struct bfd_link_info *info) | |
e86ce104 AM |
5930 | { |
5931 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5932 | unsigned int i; |
deb0e272 AM |
5933 | const struct sfpr_def_parms funcs[] = |
5934 | { | |
5935 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5936 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5937 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5938 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5939 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5940 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5941 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5942 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5943 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5944 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5945 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5946 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5947 | }; | |
e86ce104 AM |
5948 | |
5949 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5950 | if (htab->sfpr == NULL) |
5951 | /* We don't have any relocs. */ | |
b34976b6 | 5952 | return TRUE; |
82bd7b59 | 5953 | |
deb0e272 AM |
5954 | /* Provide any missing _save* and _rest* functions. */ |
5955 | htab->sfpr->size = 0; | |
5956 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5957 | if (!sfpr_define (info, &funcs[i])) | |
5958 | return FALSE; | |
82bd7b59 | 5959 | |
4ce794b7 | 5960 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5961 | |
eea6121a | 5962 | if (htab->sfpr->size == 0) |
8423293d | 5963 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5964 | |
b34976b6 | 5965 | return TRUE; |
e86ce104 AM |
5966 | } |
5967 | ||
5968 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5969 | regular object. The current definition is in some section of the | |
5970 | dynamic object, but we're not including those sections. We have to | |
5971 | change the definition to something the rest of the link can | |
5972 | understand. */ | |
5973 | ||
b34976b6 | 5974 | static bfd_boolean |
4ce794b7 AM |
5975 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5976 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5977 | { |
5978 | struct ppc_link_hash_table *htab; | |
e86ce104 | 5979 | asection *s; |
e86ce104 AM |
5980 | |
5981 | htab = ppc_hash_table (info); | |
5982 | ||
5983 | /* Deal with function syms. */ | |
5984 | if (h->type == STT_FUNC | |
f5385ebf | 5985 | || h->needs_plt) |
e86ce104 AM |
5986 | { |
5987 | /* Clear procedure linkage table information for any symbol that | |
5988 | won't need a .plt entry. */ | |
411e1bfb AM |
5989 | struct plt_entry *ent; |
5990 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5991 | if (ent->plt.refcount > 0) | |
5992 | break; | |
8387904d | 5993 | if (ent == NULL |
9c7a29a3 AM |
5994 | || SYMBOL_CALLS_LOCAL (info, h) |
5995 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5996 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5997 | { |
411e1bfb | 5998 | h->plt.plist = NULL; |
f5385ebf | 5999 | h->needs_plt = 0; |
40b8271b | 6000 | } |
5bd4f169 | 6001 | } |
bbd7ec4a | 6002 | else |
411e1bfb | 6003 | h->plt.plist = NULL; |
5bd4f169 AM |
6004 | |
6005 | /* If this is a weak symbol, and there is a real definition, the | |
6006 | processor independent code will have arranged for us to see the | |
6007 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6008 | if (h->u.weakdef != NULL) |
5bd4f169 | 6009 | { |
f6e332e6 AM |
6010 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6011 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6012 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6013 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6014 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6015 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6016 | return TRUE; |
5bd4f169 AM |
6017 | } |
6018 | ||
5bd4f169 AM |
6019 | /* If we are creating a shared library, we must presume that the |
6020 | only references to the symbol are via the global offset table. | |
6021 | For such cases we need not do anything here; the relocations will | |
6022 | be handled correctly by relocate_section. */ | |
6023 | if (info->shared) | |
b34976b6 | 6024 | return TRUE; |
5bd4f169 | 6025 | |
65f38f15 AM |
6026 | /* If there are no references to this symbol that do not use the |
6027 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6028 | if (!h->non_got_ref) |
b34976b6 | 6029 | return TRUE; |
65f38f15 | 6030 | |
b186458a JJ |
6031 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6032 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6033 | return TRUE; | |
6034 | ||
f4656909 | 6035 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6036 | { |
f4656909 AM |
6037 | struct ppc_link_hash_entry * eh; |
6038 | struct ppc_dyn_relocs *p; | |
65f38f15 | 6039 | |
f4656909 AM |
6040 | eh = (struct ppc_link_hash_entry *) h; |
6041 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6042 | { | |
6043 | s = p->sec->output_section; | |
6044 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6045 | break; | |
6046 | } | |
6047 | ||
6048 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6049 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6050 | if (p == NULL) | |
6051 | { | |
f5385ebf | 6052 | h->non_got_ref = 0; |
f4656909 AM |
6053 | return TRUE; |
6054 | } | |
65f38f15 AM |
6055 | } |
6056 | ||
5d35169e | 6057 | if (h->plt.plist != NULL) |
97b639ba AM |
6058 | { |
6059 | /* We should never get here, but unfortunately there are versions | |
6060 | of gcc out there that improperly (for this ABI) put initialized | |
6061 | function pointers, vtable refs and suchlike in read-only | |
6062 | sections. Allow them to proceed, but warn that this might | |
6063 | break at runtime. */ | |
6064 | (*_bfd_error_handler) | |
6065 | (_("copy reloc against `%s' requires lazy plt linking; " | |
6066 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
6067 | h->root.root.string); | |
6068 | } | |
5d35169e AM |
6069 | |
6070 | /* This is a reference to a symbol defined by a dynamic object which | |
6071 | is not a function. */ | |
6072 | ||
909272ee AM |
6073 | if (h->size == 0) |
6074 | { | |
6075 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
6076 | h->root.root.string); | |
6077 | return TRUE; | |
6078 | } | |
6079 | ||
5bd4f169 AM |
6080 | /* We must allocate the symbol in our .dynbss section, which will |
6081 | become part of the .bss section of the executable. There will be | |
6082 | an entry for this symbol in the .dynsym section. The dynamic | |
6083 | object will contain position independent code, so all references | |
6084 | from the dynamic object to this symbol will go through the global | |
6085 | offset table. The dynamic linker will use the .dynsym entry to | |
6086 | determine the address it must put in the global offset table, so | |
6087 | both the dynamic object and the regular object will refer to the | |
6088 | same memory location for the variable. */ | |
5bd4f169 | 6089 | |
04c9666a AM |
6090 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6091 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6092 | runtime process image. We need to remember the offset into the |
6093 | .rela.bss section we are going to use. */ | |
6094 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6095 | { | |
eea6121a | 6096 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6097 | h->needs_copy = 1; |
5bd4f169 AM |
6098 | } |
6099 | ||
4ce794b7 | 6100 | s = htab->dynbss; |
5bd4f169 | 6101 | |
027297b7 | 6102 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6103 | } |
6104 | ||
e86ce104 AM |
6105 | /* If given a function descriptor symbol, hide both the function code |
6106 | sym and the descriptor. */ | |
6107 | static void | |
4ce794b7 AM |
6108 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6109 | struct elf_link_hash_entry *h, | |
6110 | bfd_boolean force_local) | |
e86ce104 | 6111 | { |
34814b9f | 6112 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6113 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6114 | ||
34814b9f AM |
6115 | eh = (struct ppc_link_hash_entry *) h; |
6116 | if (eh->is_func_descriptor) | |
e86ce104 | 6117 | { |
34814b9f | 6118 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6119 | |
721956f4 | 6120 | if (fh == NULL) |
d1329ca3 AM |
6121 | { |
6122 | const char *p, *q; | |
6123 | struct ppc_link_hash_table *htab; | |
6124 | char save; | |
6125 | ||
6126 | /* We aren't supposed to use alloca in BFD because on | |
6127 | systems which do not have alloca the version in libiberty | |
6128 | calls xmalloc, which might cause the program to crash | |
6129 | when it runs out of memory. This function doesn't have a | |
6130 | return status, so there's no way to gracefully return an | |
6131 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6132 | accessed; It's either a string in an ELF string table, |
6133 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6134 | |
34814b9f | 6135 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6136 | save = *p; |
6137 | *(char *) p = '.'; | |
6138 | htab = ppc_hash_table (info); | |
34814b9f AM |
6139 | fh = (struct ppc_link_hash_entry *) |
6140 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6141 | *(char *) p = save; |
6142 | ||
6143 | /* Unfortunately, if it so happens that the string we were | |
6144 | looking for was allocated immediately before this string, | |
6145 | then we overwrote the string terminator. That's the only | |
6146 | reason the lookup should fail. */ | |
6147 | if (fh == NULL) | |
6148 | { | |
34814b9f AM |
6149 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6150 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6151 | --q, --p; |
34814b9f AM |
6152 | if (q < eh->elf.root.root.string && *p == '.') |
6153 | fh = (struct ppc_link_hash_entry *) | |
6154 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6155 | } |
6156 | if (fh != NULL) | |
6157 | { | |
34814b9f AM |
6158 | eh->oh = fh; |
6159 | fh->oh = eh; | |
d1329ca3 AM |
6160 | } |
6161 | } | |
e86ce104 | 6162 | if (fh != NULL) |
34814b9f | 6163 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6164 | } |
6165 | } | |
6166 | ||
411e1bfb | 6167 | static bfd_boolean |
8843416a AM |
6168 | get_sym_h (struct elf_link_hash_entry **hp, |
6169 | Elf_Internal_Sym **symp, | |
6170 | asection **symsecp, | |
6171 | char **tls_maskp, | |
6172 | Elf_Internal_Sym **locsymsp, | |
6173 | unsigned long r_symndx, | |
6174 | bfd *ibfd) | |
411e1bfb | 6175 | { |
0ffa91dd | 6176 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6177 | |
6178 | if (r_symndx >= symtab_hdr->sh_info) | |
6179 | { | |
6180 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6181 | struct elf_link_hash_entry *h; | |
6182 | ||
6183 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6184 | while (h->root.type == bfd_link_hash_indirect | |
6185 | || h->root.type == bfd_link_hash_warning) | |
6186 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6187 | ||
6188 | if (hp != NULL) | |
6189 | *hp = h; | |
6190 | ||
6191 | if (symp != NULL) | |
6192 | *symp = NULL; | |
6193 | ||
6194 | if (symsecp != NULL) | |
6195 | { | |
6196 | asection *symsec = NULL; | |
6197 | if (h->root.type == bfd_link_hash_defined | |
6198 | || h->root.type == bfd_link_hash_defweak) | |
6199 | symsec = h->root.u.def.section; | |
6200 | *symsecp = symsec; | |
6201 | } | |
6202 | ||
e7b938ca | 6203 | if (tls_maskp != NULL) |
411e1bfb AM |
6204 | { |
6205 | struct ppc_link_hash_entry *eh; | |
6206 | ||
6207 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6208 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6209 | } |
6210 | } | |
6211 | else | |
6212 | { | |
6213 | Elf_Internal_Sym *sym; | |
6214 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6215 | ||
6216 | if (locsyms == NULL) | |
6217 | { | |
6218 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6219 | if (locsyms == NULL) | |
6220 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6221 | symtab_hdr->sh_info, | |
6222 | 0, NULL, NULL, NULL); | |
6223 | if (locsyms == NULL) | |
6224 | return FALSE; | |
6225 | *locsymsp = locsyms; | |
6226 | } | |
6227 | sym = locsyms + r_symndx; | |
6228 | ||
6229 | if (hp != NULL) | |
6230 | *hp = NULL; | |
6231 | ||
6232 | if (symp != NULL) | |
6233 | *symp = sym; | |
6234 | ||
6235 | if (symsecp != NULL) | |
cb33740c | 6236 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6237 | |
e7b938ca | 6238 | if (tls_maskp != NULL) |
411e1bfb AM |
6239 | { |
6240 | struct got_entry **lgot_ents; | |
e7b938ca | 6241 | char *tls_mask; |
411e1bfb | 6242 | |
e7b938ca | 6243 | tls_mask = NULL; |
411e1bfb AM |
6244 | lgot_ents = elf_local_got_ents (ibfd); |
6245 | if (lgot_ents != NULL) | |
6246 | { | |
e7b938ca AM |
6247 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6248 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6249 | } |
e7b938ca | 6250 | *tls_maskp = tls_mask; |
411e1bfb AM |
6251 | } |
6252 | } | |
6253 | return TRUE; | |
6254 | } | |
6255 | ||
e7b938ca | 6256 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6257 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6258 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6259 | |
6260 | static int | |
0d4792f7 AM |
6261 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6262 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6263 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6264 | { |
6265 | unsigned long r_symndx; | |
0d4792f7 | 6266 | int next_r; |
411e1bfb AM |
6267 | struct elf_link_hash_entry *h; |
6268 | Elf_Internal_Sym *sym; | |
6269 | asection *sec; | |
6270 | bfd_vma off; | |
6271 | ||
6272 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6273 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6274 | return 0; |
411e1bfb | 6275 | |
e7b938ca | 6276 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6277 | || sec == NULL |
7c8fe5c4 | 6278 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6279 | return 1; |
411e1bfb AM |
6280 | |
6281 | /* Look inside a TOC section too. */ | |
6282 | if (h != NULL) | |
6283 | { | |
6284 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6285 | off = h->root.u.def.value; | |
6286 | } | |
6287 | else | |
6288 | off = sym->st_value; | |
6289 | off += rel->r_addend; | |
6290 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6291 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6292 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6293 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6294 | return 0; |
0d4792f7 AM |
6295 | if (toc_symndx != NULL) |
6296 | *toc_symndx = r_symndx; | |
6297 | if ((h == NULL | |
6298 | || ((h->root.type == bfd_link_hash_defined | |
6299 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6300 | && !h->def_dynamic)) |
0d4792f7 AM |
6301 | && (next_r == -1 || next_r == -2)) |
6302 | return 1 - next_r; | |
951fd09b | 6303 | return 1; |
411e1bfb AM |
6304 | } |
6305 | ||
754021d0 | 6306 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6307 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6308 | |
6309 | static bfd_boolean | |
6310 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6311 | { | |
6312 | struct ppc_link_hash_entry *eh; | |
6313 | asection *sym_sec; | |
74f0fb50 | 6314 | struct _opd_sec_data *opd; |
754021d0 AM |
6315 | |
6316 | if (h->root.type == bfd_link_hash_indirect) | |
6317 | return TRUE; | |
6318 | ||
6319 | if (h->root.type == bfd_link_hash_warning) | |
6320 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6321 | ||
6322 | if (h->root.type != bfd_link_hash_defined | |
6323 | && h->root.type != bfd_link_hash_defweak) | |
6324 | return TRUE; | |
6325 | ||
6326 | eh = (struct ppc_link_hash_entry *) h; | |
6327 | if (eh->adjust_done) | |
6328 | return TRUE; | |
6329 | ||
6330 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6331 | opd = get_opd_info (sym_sec); |
6332 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6333 | { |
74f0fb50 | 6334 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6335 | if (adjust == -1) |
6336 | { | |
6337 | /* This entry has been deleted. */ | |
b3fac117 | 6338 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6339 | if (dsec == NULL) |
6340 | { | |
6341 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6342 | if (elf_discarded_section (dsec)) | |
6343 | { | |
b3fac117 | 6344 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6345 | break; |
6346 | } | |
6347 | } | |
4025353c | 6348 | eh->elf.root.u.def.value = 0; |
81688140 | 6349 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6350 | } |
6351 | else | |
6352 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6353 | eh->adjust_done = 1; |
6354 | } | |
6355 | return TRUE; | |
6356 | } | |
6357 | ||
8c1d1bb8 AM |
6358 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6359 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6360 | have already been determined. */ | |
6361 | ||
6362 | static bfd_boolean | |
6363 | dec_dynrel_count (bfd_vma r_info, | |
6364 | asection *sec, | |
6365 | struct bfd_link_info *info, | |
6366 | Elf_Internal_Sym **local_syms, | |
6367 | struct elf_link_hash_entry *h, | |
6368 | asection *sym_sec) | |
6369 | { | |
6370 | enum elf_ppc64_reloc_type r_type; | |
6371 | struct ppc_dyn_relocs *p; | |
6372 | struct ppc_dyn_relocs **pp; | |
6373 | ||
6374 | /* Can this reloc be dynamic? This switch, and later tests here | |
6375 | should be kept in sync with the code in check_relocs. */ | |
6376 | r_type = ELF64_R_TYPE (r_info); | |
6377 | switch (r_type) | |
6378 | { | |
6379 | default: | |
6380 | return TRUE; | |
6381 | ||
6382 | case R_PPC64_TPREL16: | |
6383 | case R_PPC64_TPREL16_LO: | |
6384 | case R_PPC64_TPREL16_HI: | |
6385 | case R_PPC64_TPREL16_HA: | |
6386 | case R_PPC64_TPREL16_DS: | |
6387 | case R_PPC64_TPREL16_LO_DS: | |
6388 | case R_PPC64_TPREL16_HIGHER: | |
6389 | case R_PPC64_TPREL16_HIGHERA: | |
6390 | case R_PPC64_TPREL16_HIGHEST: | |
6391 | case R_PPC64_TPREL16_HIGHESTA: | |
6392 | if (!info->shared) | |
6393 | return TRUE; | |
6394 | ||
6395 | case R_PPC64_TPREL64: | |
6396 | case R_PPC64_DTPMOD64: | |
6397 | case R_PPC64_DTPREL64: | |
6398 | case R_PPC64_ADDR64: | |
6399 | case R_PPC64_REL30: | |
6400 | case R_PPC64_REL32: | |
6401 | case R_PPC64_REL64: | |
6402 | case R_PPC64_ADDR14: | |
6403 | case R_PPC64_ADDR14_BRNTAKEN: | |
6404 | case R_PPC64_ADDR14_BRTAKEN: | |
6405 | case R_PPC64_ADDR16: | |
6406 | case R_PPC64_ADDR16_DS: | |
6407 | case R_PPC64_ADDR16_HA: | |
6408 | case R_PPC64_ADDR16_HI: | |
6409 | case R_PPC64_ADDR16_HIGHER: | |
6410 | case R_PPC64_ADDR16_HIGHERA: | |
6411 | case R_PPC64_ADDR16_HIGHEST: | |
6412 | case R_PPC64_ADDR16_HIGHESTA: | |
6413 | case R_PPC64_ADDR16_LO: | |
6414 | case R_PPC64_ADDR16_LO_DS: | |
6415 | case R_PPC64_ADDR24: | |
6416 | case R_PPC64_ADDR32: | |
6417 | case R_PPC64_UADDR16: | |
6418 | case R_PPC64_UADDR32: | |
6419 | case R_PPC64_UADDR64: | |
6420 | case R_PPC64_TOC: | |
6421 | break; | |
6422 | } | |
6423 | ||
6424 | if (local_syms != NULL) | |
6425 | { | |
6426 | unsigned long r_symndx; | |
6427 | Elf_Internal_Sym *sym; | |
6428 | bfd *ibfd = sec->owner; | |
6429 | ||
6430 | r_symndx = ELF64_R_SYM (r_info); | |
6431 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6432 | return FALSE; | |
6433 | } | |
6434 | ||
6435 | if ((info->shared | |
1d483afe | 6436 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6437 | || (h != NULL |
6438 | && (!info->symbolic | |
6439 | || h->root.type == bfd_link_hash_defweak | |
6440 | || !h->def_regular)))) | |
6441 | || (ELIMINATE_COPY_RELOCS | |
6442 | && !info->shared | |
6443 | && h != NULL | |
6444 | && (h->root.type == bfd_link_hash_defweak | |
6445 | || !h->def_regular))) | |
6446 | ; | |
6447 | else | |
6448 | return TRUE; | |
6449 | ||
6450 | if (h != NULL) | |
6451 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6452 | else |
6edfbbad | 6453 | { |
60124e18 AM |
6454 | if (sym_sec != NULL) |
6455 | { | |
6456 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6457 | pp = (struct ppc_dyn_relocs **) vpp; | |
6458 | } | |
6459 | else | |
6460 | { | |
6461 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6462 | pp = (struct ppc_dyn_relocs **) vpp; | |
6463 | } | |
6464 | ||
6465 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6466 | with local syms for a given section. Don't report a dynreloc | |
6467 | miscount. */ | |
6468 | if (*pp == NULL) | |
6469 | return TRUE; | |
6edfbbad | 6470 | } |
8c1d1bb8 AM |
6471 | |
6472 | while ((p = *pp) != NULL) | |
6473 | { | |
6474 | if (p->sec == sec) | |
6475 | { | |
1d483afe | 6476 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6477 | p->pc_count -= 1; |
6478 | p->count -= 1; | |
6479 | if (p->count == 0) | |
6480 | *pp = p->next; | |
6481 | return TRUE; | |
6482 | } | |
6483 | pp = &p->next; | |
6484 | } | |
6485 | ||
6486 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6487 | sec->owner, sec); | |
6488 | bfd_set_error (bfd_error_bad_value); | |
6489 | return FALSE; | |
6490 | } | |
6491 | ||
754021d0 AM |
6492 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6493 | only remove those associated with functions in discarded link-once | |
6494 | sections, or weakly defined functions that have been overridden. It | |
6495 | would be possible to remove many more entries for statically linked | |
6496 | applications. */ | |
6497 | ||
b34976b6 | 6498 | bfd_boolean |
3f764659 JJ |
6499 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
6500 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
6501 | { |
6502 | bfd *ibfd; | |
754021d0 | 6503 | bfd_boolean some_edited = FALSE; |
3f764659 | 6504 | asection *need_pad = NULL; |
1e2f5b6e | 6505 | |
411e1bfb | 6506 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6507 | { |
6508 | asection *sec; | |
6509 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6510 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6511 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6512 | struct elf_link_hash_entry **sym_hashes; |
6513 | bfd_vma offset; | |
74f0fb50 | 6514 | struct _opd_sec_data *opd; |
3f764659 JJ |
6515 | bfd_boolean need_edit, add_aux_fields; |
6516 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6517 | |
6518 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6519 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6520 | continue; |
6521 | ||
4b85d634 AM |
6522 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6523 | continue; | |
6524 | ||
1e2f5b6e AM |
6525 | if (sec->output_section == bfd_abs_section_ptr) |
6526 | continue; | |
6527 | ||
6528 | /* Look through the section relocs. */ | |
6529 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6530 | continue; | |
6531 | ||
6cdc0ccc | 6532 | local_syms = NULL; |
0ffa91dd | 6533 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
6534 | sym_hashes = elf_sym_hashes (ibfd); |
6535 | ||
6536 | /* Read the relocations. */ | |
4ce794b7 | 6537 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6538 | info->keep_memory); |
1e2f5b6e | 6539 | if (relstart == NULL) |
b34976b6 | 6540 | return FALSE; |
1e2f5b6e AM |
6541 | |
6542 | /* First run through the relocs to check they are sane, and to | |
6543 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6544 | need_edit = FALSE; |
3f764659 | 6545 | need_pad = sec; |
1e2f5b6e AM |
6546 | offset = 0; |
6547 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6548 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6549 | { |
04c9666a | 6550 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6551 | unsigned long r_symndx; |
6552 | asection *sym_sec; | |
6553 | struct elf_link_hash_entry *h; | |
6554 | Elf_Internal_Sym *sym; | |
6555 | ||
3f764659 | 6556 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6557 | only interested in the reloc pointing to a function entry |
6558 | point. */ | |
50bc7936 AM |
6559 | if (rel->r_offset != offset |
6560 | || rel + 1 >= relend | |
6561 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6562 | { |
6563 | /* If someone messes with .opd alignment then after a | |
6564 | "ld -r" we might have padding in the middle of .opd. | |
6565 | Also, there's nothing to prevent someone putting | |
6566 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6567 | optimization for them! */ |
3f764659 | 6568 | broken_opd: |
1e2f5b6e | 6569 | (*_bfd_error_handler) |
d003868e | 6570 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6571 | need_edit = FALSE; |
1e2f5b6e AM |
6572 | break; |
6573 | } | |
6574 | ||
50bc7936 AM |
6575 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6576 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6577 | { | |
6578 | (*_bfd_error_handler) | |
d003868e AM |
6579 | (_("%B: unexpected reloc type %u in .opd section"), |
6580 | ibfd, r_type); | |
50bc7936 AM |
6581 | need_edit = FALSE; |
6582 | break; | |
6583 | } | |
6584 | ||
1e2f5b6e | 6585 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6586 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6587 | r_symndx, ibfd)) | |
50bc7936 | 6588 | goto error_ret; |
1e2f5b6e AM |
6589 | |
6590 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6591 | { | |
411e1bfb AM |
6592 | const char *sym_name; |
6593 | if (h != NULL) | |
6594 | sym_name = h->root.root.string; | |
6595 | else | |
26c61ae5 L |
6596 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6597 | sym_sec); | |
411e1bfb | 6598 | |
1e2f5b6e | 6599 | (*_bfd_error_handler) |
d003868e AM |
6600 | (_("%B: undefined sym `%s' in .opd section"), |
6601 | ibfd, sym_name); | |
b34976b6 | 6602 | need_edit = FALSE; |
1e2f5b6e AM |
6603 | break; |
6604 | } | |
6605 | ||
51020317 AM |
6606 | /* opd entries are always for functions defined in the |
6607 | current input bfd. If the symbol isn't defined in the | |
6608 | input bfd, then we won't be using the function in this | |
6609 | bfd; It must be defined in a linkonce section in another | |
6610 | bfd, or is weak. It's also possible that we are | |
6611 | discarding the function due to a linker script /DISCARD/, | |
6612 | which we test for via the output_section. */ | |
6613 | if (sym_sec->owner != ibfd | |
6614 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6615 | need_edit = TRUE; |
1e2f5b6e | 6616 | |
50bc7936 | 6617 | rel += 2; |
3f764659 JJ |
6618 | if (rel == relend |
6619 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6620 | { | |
6621 | if (sec->size == offset + 24) | |
6622 | { | |
6623 | need_pad = NULL; | |
6624 | break; | |
6625 | } | |
6626 | if (rel == relend && sec->size == offset + 16) | |
6627 | { | |
6628 | cnt_16b++; | |
6629 | break; | |
6630 | } | |
6631 | goto broken_opd; | |
6632 | } | |
6633 | ||
6634 | if (rel->r_offset == offset + 24) | |
6635 | offset += 24; | |
6636 | else if (rel->r_offset != offset + 16) | |
6637 | goto broken_opd; | |
6638 | else if (rel + 1 < relend | |
6639 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6640 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6641 | { | |
6642 | offset += 16; | |
6643 | cnt_16b++; | |
6644 | } | |
6645 | else if (rel + 2 < relend | |
6646 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6647 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6648 | { | |
6649 | offset += 24; | |
6650 | rel += 1; | |
6651 | } | |
6652 | else | |
6653 | goto broken_opd; | |
1e2f5b6e AM |
6654 | } |
6655 | ||
3f764659 JJ |
6656 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6657 | ||
6658 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6659 | { |
6660 | Elf_Internal_Rela *write_rel; | |
6661 | bfd_byte *rptr, *wptr; | |
3f764659 | 6662 | bfd_byte *new_contents = NULL; |
b34976b6 | 6663 | bfd_boolean skip; |
3f764659 | 6664 | long opd_ent_size; |
74f0fb50 AM |
6665 | bfd_size_type amt; |
6666 | ||
6667 | amt = sec->size * sizeof (long) / 8; | |
6668 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
6669 | opd->adjust = bfd_zalloc (obfd, amt); | |
6670 | if (opd->adjust == NULL) | |
6671 | return FALSE; | |
6672 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
6673 | |
6674 | /* This seems a waste of time as input .opd sections are all | |
6675 | zeros as generated by gcc, but I suppose there's no reason | |
6676 | this will always be so. We might start putting something in | |
6677 | the third word of .opd entries. */ | |
6678 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6679 | { | |
eea6121a AM |
6680 | bfd_byte *loc; |
6681 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6682 | { |
eea6121a AM |
6683 | if (loc != NULL) |
6684 | free (loc); | |
50bc7936 | 6685 | error_ret: |
6cdc0ccc AM |
6686 | if (local_syms != NULL |
6687 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6688 | free (local_syms); | |
6cdc0ccc AM |
6689 | if (elf_section_data (sec)->relocs != relstart) |
6690 | free (relstart); | |
b34976b6 | 6691 | return FALSE; |
6cdc0ccc | 6692 | } |
1e2f5b6e AM |
6693 | sec->contents = loc; |
6694 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6695 | } | |
6696 | ||
6697 | elf_section_data (sec)->relocs = relstart; | |
6698 | ||
3f764659 | 6699 | new_contents = sec->contents; |
3f764659 JJ |
6700 | if (add_aux_fields) |
6701 | { | |
6702 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6703 | if (new_contents == NULL) | |
6704 | return FALSE; | |
6705 | need_pad = FALSE; | |
3f764659 | 6706 | } |
b4f4e59f AM |
6707 | wptr = new_contents; |
6708 | rptr = sec->contents; | |
3f764659 | 6709 | |
1e2f5b6e | 6710 | write_rel = relstart; |
b34976b6 | 6711 | skip = FALSE; |
1e2f5b6e | 6712 | offset = 0; |
3f764659 | 6713 | opd_ent_size = 0; |
1e2f5b6e AM |
6714 | for (rel = relstart; rel < relend; rel++) |
6715 | { | |
50bc7936 AM |
6716 | unsigned long r_symndx; |
6717 | asection *sym_sec; | |
6718 | struct elf_link_hash_entry *h; | |
6719 | Elf_Internal_Sym *sym; | |
6720 | ||
6721 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6722 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6723 | r_symndx, ibfd)) |
50bc7936 AM |
6724 | goto error_ret; |
6725 | ||
1e2f5b6e AM |
6726 | if (rel->r_offset == offset) |
6727 | { | |
50bc7936 | 6728 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6729 | |
6730 | /* See if the .opd entry is full 24 byte or | |
6731 | 16 byte (with fd_aux entry overlapped with next | |
6732 | fd_func). */ | |
6733 | opd_ent_size = 24; | |
6734 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6735 | || (rel + 3 < relend | |
6736 | && rel[2].r_offset == offset + 16 | |
6737 | && rel[3].r_offset == offset + 24 | |
6738 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6739 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6740 | opd_ent_size = 16; | |
6741 | ||
4025353c AM |
6742 | if (h != NULL |
6743 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6744 | { |
6745 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6746 | ppc_hash_table (info)); | |
6747 | if (fdh != NULL | |
6748 | && fdh->elf.root.type != bfd_link_hash_defined | |
6749 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6750 | fdh = NULL; | |
6751 | } | |
1e2f5b6e | 6752 | |
51020317 AM |
6753 | skip = (sym_sec->owner != ibfd |
6754 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6755 | if (skip) |
6756 | { | |
4025353c | 6757 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6758 | { |
6759 | /* Arrange for the function descriptor sym | |
6760 | to be dropped. */ | |
d6fe2dc1 AM |
6761 | fdh->elf.root.u.def.value = 0; |
6762 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6763 | } |
74f0fb50 | 6764 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6765 | } |
6766 | else | |
1e2f5b6e AM |
6767 | { |
6768 | /* We'll be keeping this opd entry. */ | |
6769 | ||
4025353c | 6770 | if (fdh != NULL) |
1e2f5b6e | 6771 | { |
754021d0 AM |
6772 | /* Redefine the function descriptor symbol to |
6773 | this location in the opd section. It is | |
6774 | necessary to update the value here rather | |
6775 | than using an array of adjustments as we do | |
6776 | for local symbols, because various places | |
6777 | in the generic ELF code use the value | |
6778 | stored in u.def.value. */ | |
3f764659 | 6779 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6780 | fdh->adjust_done = 1; |
1e2f5b6e | 6781 | } |
754021d0 AM |
6782 | |
6783 | /* Local syms are a bit tricky. We could | |
6784 | tweak them as they can be cached, but | |
6785 | we'd need to look through the local syms | |
6786 | for the function descriptor sym which we | |
6787 | don't have at the moment. So keep an | |
6788 | array of adjustments. */ | |
74f0fb50 | 6789 | opd->adjust[rel->r_offset / 8] |
3f764659 | 6790 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
6791 | |
6792 | if (wptr != rptr) | |
3f764659 JJ |
6793 | memcpy (wptr, rptr, opd_ent_size); |
6794 | wptr += opd_ent_size; | |
6795 | if (add_aux_fields && opd_ent_size == 16) | |
6796 | { | |
6797 | memset (wptr, '\0', 8); | |
6798 | wptr += 8; | |
6799 | } | |
1e2f5b6e | 6800 | } |
3f764659 JJ |
6801 | rptr += opd_ent_size; |
6802 | offset += opd_ent_size; | |
1e2f5b6e AM |
6803 | } |
6804 | ||
50bc7936 AM |
6805 | if (skip) |
6806 | { | |
60124e18 AM |
6807 | if (!NO_OPD_RELOCS |
6808 | && !info->relocatable | |
18d944df AM |
6809 | && !dec_dynrel_count (rel->r_info, sec, info, |
6810 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6811 | goto error_ret; |
50bc7936 AM |
6812 | } |
6813 | else | |
1e2f5b6e | 6814 | { |
50bc7936 AM |
6815 | /* We need to adjust any reloc offsets to point to the |
6816 | new opd entries. While we're at it, we may as well | |
6817 | remove redundant relocs. */ | |
74f0fb50 | 6818 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6819 | if (write_rel != rel) |
6820 | memcpy (write_rel, rel, sizeof (*rel)); | |
6821 | ++write_rel; | |
6822 | } | |
6823 | } | |
6824 | ||
3f764659 | 6825 | sec->size = wptr - new_contents; |
1e2f5b6e | 6826 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6827 | if (add_aux_fields) |
6828 | { | |
6829 | free (sec->contents); | |
6830 | sec->contents = new_contents; | |
6831 | } | |
6832 | ||
05bf9422 | 6833 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6834 | elf_bfd_final_link if we are emitting relocs. */ |
6835 | elf_section_data (sec)->rel_hdr.sh_size | |
6836 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6837 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6838 | some_edited = TRUE; |
1e2f5b6e | 6839 | } |
6cdc0ccc | 6840 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6841 | free (relstart); |
6cdc0ccc | 6842 | |
411e1bfb AM |
6843 | if (local_syms != NULL |
6844 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6845 | { | |
6846 | if (!info->keep_memory) | |
6847 | free (local_syms); | |
6848 | else | |
6849 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6850 | } | |
6851 | } | |
6852 | ||
754021d0 AM |
6853 | if (some_edited) |
6854 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6855 | ||
3f764659 JJ |
6856 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6857 | long, add a 8 byte padding after it. */ | |
6858 | if (need_pad != NULL && !info->relocatable) | |
6859 | { | |
6860 | bfd_byte *p; | |
6861 | ||
6862 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6863 | { | |
6864 | BFD_ASSERT (need_pad->size > 0); | |
6865 | ||
6866 | p = bfd_malloc (need_pad->size + 8); | |
6867 | if (p == NULL) | |
6868 | return FALSE; | |
699733f6 | 6869 | |
3f764659 JJ |
6870 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6871 | p, 0, need_pad->size)) | |
6872 | return FALSE; | |
6873 | ||
6874 | need_pad->contents = p; | |
6875 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6876 | } | |
6877 | else | |
6878 | { | |
6879 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6880 | if (p == NULL) | |
6881 | return FALSE; | |
6882 | ||
6883 | need_pad->contents = p; | |
6884 | } | |
6885 | ||
6886 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6887 | need_pad->size += 8; | |
6888 | } | |
6889 | ||
411e1bfb AM |
6890 | return TRUE; |
6891 | } | |
6892 | ||
e1918d23 | 6893 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6894 | |
e1918d23 | 6895 | asection * |
4ce794b7 | 6896 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6897 | { |
411e1bfb AM |
6898 | struct ppc_link_hash_table *htab; |
6899 | ||
411e1bfb | 6900 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6901 | if (htab->tls_get_addr != NULL) |
6902 | { | |
8387904d | 6903 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6904 | |
8387904d AM |
6905 | while (h->elf.root.type == bfd_link_hash_indirect |
6906 | || h->elf.root.type == bfd_link_hash_warning) | |
6907 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6908 | |
6909 | htab->tls_get_addr = h; | |
8387904d AM |
6910 | |
6911 | if (htab->tls_get_addr_fd == NULL | |
6912 | && h->oh != NULL | |
c4f68ce3 AM |
6913 | && h->oh->is_func_descriptor |
6914 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6915 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6916 | htab->tls_get_addr_fd = h->oh; |
6917 | } | |
6918 | ||
6919 | if (htab->tls_get_addr_fd != NULL) | |
6920 | { | |
6921 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6922 | ||
6923 | while (h->elf.root.type == bfd_link_hash_indirect | |
6924 | || h->elf.root.type == bfd_link_hash_warning) | |
6925 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6926 | ||
6927 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6928 | } |
6929 | ||
e1918d23 | 6930 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6931 | } |
411e1bfb | 6932 | |
951fd09b AM |
6933 | /* Run through all the TLS relocs looking for optimization |
6934 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6935 | a preliminary section layout so that we know the TLS segment | |
6936 | offsets. We can't optimize earlier because some optimizations need | |
6937 | to know the tp offset, and we need to optimize before allocating | |
6938 | dynamic relocations. */ | |
6939 | ||
6940 | bfd_boolean | |
4ce794b7 | 6941 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6942 | { |
6943 | bfd *ibfd; | |
6944 | asection *sec; | |
6945 | struct ppc_link_hash_table *htab; | |
102890f0 | 6946 | int pass; |
951fd09b | 6947 | |
1d483afe | 6948 | if (info->relocatable || !info->executable) |
411e1bfb AM |
6949 | return TRUE; |
6950 | ||
951fd09b | 6951 | htab = ppc_hash_table (info); |
411e1bfb AM |
6952 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6953 | { | |
6954 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6955 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6956 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6957 | |
102890f0 AM |
6958 | /* Look at all the sections for this file. Make two passes over |
6959 | the relocs. On the first pass, mark toc entries involved | |
6960 | with tls relocs, and check that tls relocs involved in | |
6961 | setting up a tls_get_addr call are indeed followed by such a | |
6962 | call. If they are not, exclude them from the optimizations | |
6963 | done on the second pass. */ | |
6964 | for (pass = 0; pass < 2; ++pass) | |
6965 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6966 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6967 | { | |
6968 | Elf_Internal_Rela *relstart, *rel, *relend; | |
411e1bfb | 6969 | |
102890f0 AM |
6970 | /* Read the relocations. */ |
6971 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
6972 | info->keep_memory); | |
6973 | if (relstart == NULL) | |
6974 | return FALSE; | |
411e1bfb | 6975 | |
102890f0 AM |
6976 | relend = relstart + sec->reloc_count; |
6977 | for (rel = relstart; rel < relend; rel++) | |
6978 | { | |
6979 | enum elf_ppc64_reloc_type r_type; | |
6980 | unsigned long r_symndx; | |
6981 | struct elf_link_hash_entry *h; | |
6982 | Elf_Internal_Sym *sym; | |
6983 | asection *sym_sec; | |
6984 | char *tls_mask; | |
6985 | char tls_set, tls_clear, tls_type = 0; | |
6986 | bfd_vma value; | |
6987 | bfd_boolean ok_tprel, is_local; | |
6988 | long toc_ref_index = 0; | |
6989 | int expecting_tls_get_addr = 0; | |
411e1bfb | 6990 | |
102890f0 AM |
6991 | r_symndx = ELF64_R_SYM (rel->r_info); |
6992 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
6993 | r_symndx, ibfd)) | |
6994 | { | |
6995 | err_free_rel: | |
6996 | if (elf_section_data (sec)->relocs != relstart) | |
6997 | free (relstart); | |
6998 | if (toc_ref != NULL) | |
6999 | free (toc_ref); | |
7000 | if (locsyms != NULL | |
0ffa91dd | 7001 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7002 | != (unsigned char *) locsyms)) |
7003 | free (locsyms); | |
7004 | return FALSE; | |
7005 | } | |
411e1bfb | 7006 | |
102890f0 AM |
7007 | if (h != NULL) |
7008 | { | |
7009 | if (h->root.type != bfd_link_hash_defined | |
7010 | && h->root.type != bfd_link_hash_defweak) | |
7011 | continue; | |
7012 | value = h->root.u.def.value; | |
7013 | } | |
7014 | else | |
7015 | /* Symbols referenced by TLS relocs must be of type | |
7016 | STT_TLS. So no need for .opd local sym adjust. */ | |
7017 | value = sym->st_value; | |
7018 | ||
7019 | ok_tprel = FALSE; | |
7020 | is_local = FALSE; | |
7021 | if (h == NULL | |
7022 | || !h->def_dynamic) | |
7023 | { | |
7024 | is_local = TRUE; | |
7025 | value += sym_sec->output_offset; | |
7026 | value += sym_sec->output_section->vma; | |
7027 | value -= htab->elf.tls_sec->vma; | |
7028 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7029 | < (bfd_vma) 1 << 32); | |
7030 | } | |
951fd09b | 7031 | |
102890f0 AM |
7032 | r_type = ELF64_R_TYPE (rel->r_info); |
7033 | switch (r_type) | |
7034 | { | |
7035 | case R_PPC64_GOT_TLSLD16: | |
7036 | case R_PPC64_GOT_TLSLD16_LO: | |
7037 | expecting_tls_get_addr = 1; | |
7038 | /* Fall thru */ | |
7039 | ||
7040 | case R_PPC64_GOT_TLSLD16_HI: | |
7041 | case R_PPC64_GOT_TLSLD16_HA: | |
7042 | /* These relocs should never be against a symbol | |
7043 | defined in a shared lib. Leave them alone if | |
7044 | that turns out to be the case. */ | |
7045 | if (!is_local) | |
7046 | continue; | |
411e1bfb | 7047 | |
102890f0 | 7048 | /* LD -> LE */ |
411e1bfb | 7049 | tls_set = 0; |
102890f0 AM |
7050 | tls_clear = TLS_LD; |
7051 | tls_type = TLS_TLS | TLS_LD; | |
7052 | break; | |
411e1bfb | 7053 | |
102890f0 AM |
7054 | case R_PPC64_GOT_TLSGD16: |
7055 | case R_PPC64_GOT_TLSGD16_LO: | |
7056 | expecting_tls_get_addr = 1; | |
7057 | /* Fall thru */ | |
7058 | ||
7059 | case R_PPC64_GOT_TLSGD16_HI: | |
7060 | case R_PPC64_GOT_TLSGD16_HA: | |
7061 | if (ok_tprel) | |
7062 | /* GD -> LE */ | |
411e1bfb | 7063 | tls_set = 0; |
102890f0 AM |
7064 | else |
7065 | /* GD -> IE */ | |
7066 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7067 | tls_clear = TLS_GD; | |
7068 | tls_type = TLS_TLS | TLS_GD; | |
7069 | break; | |
7070 | ||
7071 | case R_PPC64_GOT_TPREL16_DS: | |
7072 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7073 | case R_PPC64_GOT_TPREL16_HI: | |
7074 | case R_PPC64_GOT_TPREL16_HA: | |
7075 | if (ok_tprel) | |
7076 | { | |
7077 | /* IE -> LE */ | |
7078 | tls_set = 0; | |
7079 | tls_clear = TLS_TPREL; | |
7080 | tls_type = TLS_TLS | TLS_TPREL; | |
7081 | break; | |
7082 | } | |
411e1bfb AM |
7083 | continue; |
7084 | ||
102890f0 AM |
7085 | case R_PPC64_TOC16: |
7086 | case R_PPC64_TOC16_LO: | |
7087 | case R_PPC64_TLS: | |
7088 | if (sym_sec == NULL || sym_sec != toc) | |
7089 | continue; | |
7090 | ||
7091 | /* Mark this toc entry as referenced by a TLS | |
7092 | code sequence. We can do that now in the | |
7093 | case of R_PPC64_TLS, and after checking for | |
7094 | tls_get_addr for the TOC16 relocs. */ | |
7095 | if (toc_ref == NULL) | |
7096 | { | |
7097 | toc_ref = bfd_zmalloc (toc->size / 8); | |
7098 | if (toc_ref == NULL) | |
7099 | goto err_free_rel; | |
7100 | } | |
7101 | if (h != NULL) | |
7102 | value = h->root.u.def.value; | |
7103 | else | |
7104 | value = sym->st_value; | |
7105 | value += rel->r_addend; | |
7106 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
7107 | toc_ref_index = value / 8; | |
7108 | if (r_type == R_PPC64_TLS) | |
7109 | { | |
7110 | toc_ref[toc_ref_index] = 1; | |
7111 | continue; | |
7112 | } | |
7113 | ||
7114 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7115 | continue; | |
7116 | ||
7117 | tls_set = 0; | |
7118 | tls_clear = 0; | |
7119 | expecting_tls_get_addr = 2; | |
7120 | break; | |
7121 | ||
7122 | case R_PPC64_TPREL64: | |
7123 | if (pass == 0 | |
7124 | || sec != toc | |
7125 | || toc_ref == NULL | |
7126 | || !toc_ref[rel->r_offset / 8]) | |
7127 | continue; | |
7128 | if (ok_tprel) | |
7129 | { | |
7130 | /* IE -> LE */ | |
7131 | tls_set = TLS_EXPLICIT; | |
7132 | tls_clear = TLS_TPREL; | |
7133 | break; | |
7134 | } | |
7135 | continue; | |
7136 | ||
7137 | case R_PPC64_DTPMOD64: | |
7138 | if (pass == 0 | |
7139 | || sec != toc | |
7140 | || toc_ref == NULL | |
7141 | || !toc_ref[rel->r_offset / 8]) | |
7142 | continue; | |
7143 | if (rel + 1 < relend | |
7144 | && (rel[1].r_info | |
7145 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7146 | && rel[1].r_offset == rel->r_offset + 8) | |
7147 | { | |
7148 | if (ok_tprel) | |
7149 | /* GD -> LE */ | |
7150 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7151 | else | |
7152 | /* GD -> IE */ | |
7153 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7154 | tls_clear = TLS_GD; | |
7155 | } | |
7156 | else | |
7157 | { | |
7158 | if (!is_local) | |
7159 | continue; | |
7160 | ||
7161 | /* LD -> LE */ | |
7162 | tls_set = TLS_EXPLICIT; | |
7163 | tls_clear = TLS_LD; | |
7164 | } | |
7165 | break; | |
7166 | ||
7167 | default: | |
7168 | continue; | |
7169 | } | |
7170 | ||
7171 | if (pass == 0) | |
7172 | { | |
7173 | if (!expecting_tls_get_addr) | |
7174 | continue; | |
7175 | ||
7176 | if (rel + 1 < relend) | |
7177 | { | |
7178 | Elf_Internal_Shdr *symtab_hdr; | |
7179 | enum elf_ppc64_reloc_type r_type2; | |
7180 | unsigned long r_symndx2; | |
7181 | struct elf_link_hash_entry *h2; | |
7182 | ||
0ffa91dd | 7183 | symtab_hdr = &elf_symtab_hdr (ibfd); |
102890f0 AM |
7184 | |
7185 | /* The next instruction should be a call to | |
7186 | __tls_get_addr. Peek at the reloc to be sure. */ | |
7187 | r_type2 = ELF64_R_TYPE (rel[1].r_info); | |
7188 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); | |
7189 | if (r_symndx2 >= symtab_hdr->sh_info | |
7190 | && (r_type2 == R_PPC64_REL14 | |
7191 | || r_type2 == R_PPC64_REL14_BRTAKEN | |
7192 | || r_type2 == R_PPC64_REL14_BRNTAKEN | |
7193 | || r_type2 == R_PPC64_REL24)) | |
7194 | { | |
7195 | struct elf_link_hash_entry **sym_hashes; | |
7196 | ||
7197 | sym_hashes = elf_sym_hashes (ibfd); | |
7198 | ||
7199 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
7200 | while (h2->root.type == bfd_link_hash_indirect | |
7201 | || h2->root.type == bfd_link_hash_warning) | |
7202 | h2 = ((struct elf_link_hash_entry *) | |
7203 | h2->root.u.i.link); | |
7204 | if (h2 != NULL | |
7205 | && (h2 == &htab->tls_get_addr->elf | |
7206 | || h2 == &htab->tls_get_addr_fd->elf)) | |
7207 | { | |
7208 | if (expecting_tls_get_addr == 2) | |
7209 | { | |
7210 | /* Check for toc tls entries. */ | |
7211 | char *toc_tls; | |
7212 | int retval; | |
7213 | ||
7214 | retval = get_tls_mask (&toc_tls, NULL, | |
7215 | &locsyms, | |
7216 | rel, ibfd); | |
7217 | if (retval == 0) | |
7218 | goto err_free_rel; | |
7219 | if (retval > 1 && toc_tls != NULL) | |
7220 | toc_ref[toc_ref_index] = 1; | |
7221 | } | |
7222 | continue; | |
7223 | } | |
7224 | } | |
7225 | } | |
7226 | ||
7227 | if (expecting_tls_get_addr != 1) | |
7228 | continue; | |
7229 | ||
7230 | /* Uh oh, we didn't find the expected call. We | |
7231 | could just mark this symbol to exclude it | |
7232 | from tls optimization but it's safer to skip | |
7233 | the entire section. */ | |
7234 | sec->has_tls_reloc = 0; | |
7235 | break; | |
7236 | } | |
7237 | ||
85f7a9cb | 7238 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7239 | { |
7240 | struct plt_entry *ent; | |
7241 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7242 | ent != NULL; | |
7243 | ent = ent->next) | |
7244 | if (ent->addend == 0) | |
411e1bfb | 7245 | { |
102890f0 | 7246 | if (ent->plt.refcount > 0) |
30038c59 | 7247 | { |
102890f0 AM |
7248 | ent->plt.refcount -= 1; |
7249 | expecting_tls_get_addr = 0; | |
30038c59 | 7250 | } |
102890f0 | 7251 | break; |
411e1bfb | 7252 | } |
102890f0 | 7253 | } |
411e1bfb | 7254 | |
85f7a9cb | 7255 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7256 | { |
7257 | struct plt_entry *ent; | |
7258 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7259 | ent != NULL; | |
7260 | ent = ent->next) | |
7261 | if (ent->addend == 0) | |
411e1bfb | 7262 | { |
102890f0 AM |
7263 | if (ent->plt.refcount > 0) |
7264 | ent->plt.refcount -= 1; | |
7265 | break; | |
411e1bfb | 7266 | } |
102890f0 | 7267 | } |
411e1bfb | 7268 | |
102890f0 | 7269 | if (tls_clear == 0) |
30038c59 AM |
7270 | continue; |
7271 | ||
102890f0 AM |
7272 | if ((tls_set & TLS_EXPLICIT) == 0) |
7273 | { | |
7274 | struct got_entry *ent; | |
411e1bfb | 7275 | |
102890f0 AM |
7276 | /* Adjust got entry for this reloc. */ |
7277 | if (h != NULL) | |
7278 | ent = h->got.glist; | |
7279 | else | |
7280 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7281 | |
102890f0 AM |
7282 | for (; ent != NULL; ent = ent->next) |
7283 | if (ent->addend == rel->r_addend | |
7284 | && ent->owner == ibfd | |
7285 | && ent->tls_type == tls_type) | |
7286 | break; | |
7287 | if (ent == NULL) | |
7288 | abort (); | |
411e1bfb | 7289 | |
102890f0 AM |
7290 | if (tls_set == 0) |
7291 | { | |
7292 | /* We managed to get rid of a got entry. */ | |
7293 | if (ent->got.refcount > 0) | |
7294 | ent->got.refcount -= 1; | |
7295 | } | |
7296 | } | |
7297 | else | |
7298 | { | |
7299 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7300 | we'll lose one or two dyn relocs. */ | |
7301 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7302 | NULL, h, sym_sec)) | |
7303 | return FALSE; | |
411e1bfb | 7304 | |
102890f0 AM |
7305 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7306 | { | |
7307 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7308 | NULL, h, sym_sec)) | |
7309 | return FALSE; | |
7310 | } | |
7311 | } | |
411e1bfb | 7312 | |
102890f0 AM |
7313 | *tls_mask |= tls_set; |
7314 | *tls_mask &= ~tls_clear; | |
7315 | } | |
8c1d1bb8 | 7316 | |
102890f0 AM |
7317 | if (elf_section_data (sec)->relocs != relstart) |
7318 | free (relstart); | |
7319 | } | |
411e1bfb | 7320 | |
102890f0 AM |
7321 | if (toc_ref != NULL) |
7322 | free (toc_ref); | |
411e1bfb | 7323 | |
102890f0 | 7324 | if (locsyms != NULL |
0ffa91dd | 7325 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) |
102890f0 AM |
7326 | { |
7327 | if (!info->keep_memory) | |
7328 | free (locsyms); | |
7329 | else | |
0ffa91dd | 7330 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; |
411e1bfb | 7331 | } |
102890f0 | 7332 | } |
b34976b6 | 7333 | return TRUE; |
1e2f5b6e | 7334 | } |
b34976b6 | 7335 | |
c5614fa4 AM |
7336 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7337 | the values of any global symbols in a toc section that has been | |
7338 | edited. Globals in toc sections should be a rarity, so this function | |
7339 | sets a flag if any are found in toc sections other than the one just | |
7340 | edited, so that futher hash table traversals can be avoided. */ | |
7341 | ||
7342 | struct adjust_toc_info | |
7343 | { | |
7344 | asection *toc; | |
7345 | unsigned long *skip; | |
7346 | bfd_boolean global_toc_syms; | |
7347 | }; | |
7348 | ||
7349 | static bfd_boolean | |
7350 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7351 | { | |
7352 | struct ppc_link_hash_entry *eh; | |
7353 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7354 | ||
7355 | if (h->root.type == bfd_link_hash_indirect) | |
7356 | return TRUE; | |
7357 | ||
7358 | if (h->root.type == bfd_link_hash_warning) | |
7359 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7360 | ||
7361 | if (h->root.type != bfd_link_hash_defined | |
7362 | && h->root.type != bfd_link_hash_defweak) | |
7363 | return TRUE; | |
7364 | ||
7365 | eh = (struct ppc_link_hash_entry *) h; | |
7366 | if (eh->adjust_done) | |
7367 | return TRUE; | |
7368 | ||
7369 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7370 | { | |
7371 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7372 | if (skip != (unsigned long) -1) | |
7373 | eh->elf.root.u.def.value -= skip; | |
7374 | else | |
7375 | { | |
7376 | (*_bfd_error_handler) | |
7377 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7378 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7379 | eh->elf.root.u.def.value = 0; | |
7380 | } | |
7381 | eh->adjust_done = 1; | |
7382 | } | |
7383 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7384 | toc_inf->global_toc_syms = TRUE; | |
7385 | ||
7386 | return TRUE; | |
7387 | } | |
7388 | ||
7389 | /* Examine all relocs referencing .toc sections in order to remove | |
7390 | unused .toc entries. */ | |
7391 | ||
7392 | bfd_boolean | |
7393 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7394 | { | |
7395 | bfd *ibfd; | |
7396 | struct adjust_toc_info toc_inf; | |
7397 | ||
7398 | toc_inf.global_toc_syms = TRUE; | |
7399 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7400 | { | |
7401 | asection *toc, *sec; | |
7402 | Elf_Internal_Shdr *symtab_hdr; | |
7403 | Elf_Internal_Sym *local_syms; | |
7404 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7405 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7406 | unsigned long *skip, *drop; |
7407 | unsigned char *used; | |
7408 | unsigned char *keep, last, some_unused; | |
7409 | ||
7410 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7411 | if (toc == NULL | |
92b7a70f | 7412 | || toc->size == 0 |
c5614fa4 AM |
7413 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7414 | || elf_discarded_section (toc)) | |
7415 | continue; | |
7416 | ||
7417 | local_syms = NULL; | |
0ffa91dd | 7418 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
7419 | sym_hashes = elf_sym_hashes (ibfd); |
7420 | ||
7421 | /* Look at sections dropped from the final link. */ | |
7422 | skip = NULL; | |
7423 | relstart = NULL; | |
7424 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7425 | { | |
7426 | if (sec->reloc_count == 0 | |
7427 | || !elf_discarded_section (sec) | |
7428 | || get_opd_info (sec) | |
7429 | || (sec->flags & SEC_ALLOC) == 0 | |
7430 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7431 | continue; | |
7432 | ||
7433 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7434 | if (relstart == NULL) | |
7435 | goto error_ret; | |
7436 | ||
7437 | /* Run through the relocs to see which toc entries might be | |
7438 | unused. */ | |
7439 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7440 | { | |
7441 | enum elf_ppc64_reloc_type r_type; | |
7442 | unsigned long r_symndx; | |
7443 | asection *sym_sec; | |
7444 | struct elf_link_hash_entry *h; | |
7445 | Elf_Internal_Sym *sym; | |
7446 | bfd_vma val; | |
7447 | ||
7448 | r_type = ELF64_R_TYPE (rel->r_info); | |
7449 | switch (r_type) | |
7450 | { | |
7451 | default: | |
7452 | continue; | |
7453 | ||
7454 | case R_PPC64_TOC16: | |
7455 | case R_PPC64_TOC16_LO: | |
7456 | case R_PPC64_TOC16_HI: | |
7457 | case R_PPC64_TOC16_HA: | |
7458 | case R_PPC64_TOC16_DS: | |
7459 | case R_PPC64_TOC16_LO_DS: | |
7460 | break; | |
7461 | } | |
7462 | ||
7463 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7464 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7465 | r_symndx, ibfd)) | |
7466 | goto error_ret; | |
7467 | ||
7468 | if (sym_sec != toc) | |
7469 | continue; | |
7470 | ||
7471 | if (h != NULL) | |
7472 | val = h->root.u.def.value; | |
7473 | else | |
7474 | val = sym->st_value; | |
7475 | val += rel->r_addend; | |
7476 | ||
7477 | if (val >= toc->size) | |
7478 | continue; | |
7479 | ||
7480 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7481 | If not, don't mark as unused. */ | |
7482 | if (val & 7) | |
7483 | continue; | |
7484 | ||
7485 | if (skip == NULL) | |
7486 | { | |
7487 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7488 | if (skip == NULL) | |
7489 | goto error_ret; | |
7490 | } | |
7491 | ||
7492 | skip[val >> 3] = 1; | |
7493 | } | |
7494 | ||
7495 | if (elf_section_data (sec)->relocs != relstart) | |
7496 | free (relstart); | |
7497 | } | |
7498 | ||
7499 | if (skip == NULL) | |
7500 | continue; | |
7501 | ||
7502 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7503 | if (used == NULL) | |
7504 | { | |
7505 | error_ret: | |
7506 | if (local_syms != NULL | |
7507 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7508 | free (local_syms); | |
7509 | if (sec != NULL | |
7510 | && relstart != NULL | |
7511 | && elf_section_data (sec)->relocs != relstart) | |
7512 | free (relstart); | |
7513 | if (skip != NULL) | |
7514 | free (skip); | |
7515 | return FALSE; | |
7516 | } | |
7517 | ||
30038c59 AM |
7518 | /* Now check all kept sections that might reference the toc. |
7519 | Check the toc itself last. */ | |
7520 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7521 | : ibfd->sections); | |
c5614fa4 | 7522 | sec != NULL; |
c5614fa4 | 7523 | sec = (sec == toc ? NULL |
c5614fa4 | 7524 | : sec->next == NULL ? toc |
30038c59 | 7525 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7526 | : sec->next)) |
7527 | { | |
7528 | int repeat; | |
7529 | ||
7530 | if (sec->reloc_count == 0 | |
7531 | || elf_discarded_section (sec) | |
7532 | || get_opd_info (sec) | |
7533 | || (sec->flags & SEC_ALLOC) == 0 | |
7534 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7535 | continue; | |
7536 | ||
7537 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7538 | if (relstart == NULL) | |
7539 | goto error_ret; | |
7540 | ||
7541 | /* Mark toc entries referenced as used. */ | |
7542 | repeat = 0; | |
7543 | do | |
7544 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7545 | { | |
7546 | enum elf_ppc64_reloc_type r_type; | |
7547 | unsigned long r_symndx; | |
7548 | asection *sym_sec; | |
7549 | struct elf_link_hash_entry *h; | |
7550 | Elf_Internal_Sym *sym; | |
7551 | bfd_vma val; | |
7552 | ||
7553 | r_type = ELF64_R_TYPE (rel->r_info); | |
7554 | switch (r_type) | |
7555 | { | |
7556 | case R_PPC64_TOC16: | |
7557 | case R_PPC64_TOC16_LO: | |
7558 | case R_PPC64_TOC16_HI: | |
7559 | case R_PPC64_TOC16_HA: | |
7560 | case R_PPC64_TOC16_DS: | |
7561 | case R_PPC64_TOC16_LO_DS: | |
7562 | /* In case we're taking addresses of toc entries. */ | |
7563 | case R_PPC64_ADDR64: | |
7564 | break; | |
7565 | ||
7566 | default: | |
7567 | continue; | |
7568 | } | |
7569 | ||
7570 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7571 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7572 | r_symndx, ibfd)) | |
7573 | { | |
7574 | free (used); | |
7575 | goto error_ret; | |
7576 | } | |
7577 | ||
7578 | if (sym_sec != toc) | |
7579 | continue; | |
7580 | ||
7581 | if (h != NULL) | |
7582 | val = h->root.u.def.value; | |
7583 | else | |
7584 | val = sym->st_value; | |
7585 | val += rel->r_addend; | |
7586 | ||
7587 | if (val >= toc->size) | |
7588 | continue; | |
7589 | ||
7590 | /* For the toc section, we only mark as used if | |
7591 | this entry itself isn't unused. */ | |
7592 | if (sec == toc | |
7593 | && !used[val >> 3] | |
7594 | && (used[rel->r_offset >> 3] | |
7595 | || !skip[rel->r_offset >> 3])) | |
7596 | /* Do all the relocs again, to catch reference | |
7597 | chains. */ | |
7598 | repeat = 1; | |
7599 | ||
7600 | used[val >> 3] = 1; | |
7601 | } | |
7602 | while (repeat); | |
7603 | } | |
7604 | ||
7605 | /* Merge the used and skip arrays. Assume that TOC | |
7606 | doublewords not appearing as either used or unused belong | |
7607 | to to an entry more than one doubleword in size. */ | |
7608 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7609 | drop < skip + (toc->size + 7) / 8; | |
7610 | ++drop, ++keep) | |
7611 | { | |
7612 | if (*keep) | |
7613 | { | |
7614 | *drop = 0; | |
7615 | last = 0; | |
7616 | } | |
7617 | else if (*drop) | |
7618 | { | |
7619 | some_unused = 1; | |
7620 | last = 1; | |
7621 | } | |
7622 | else | |
7623 | *drop = last; | |
7624 | } | |
7625 | ||
7626 | free (used); | |
7627 | ||
7628 | if (some_unused) | |
7629 | { | |
7630 | bfd_byte *contents, *src; | |
7631 | unsigned long off; | |
7632 | ||
7633 | /* Shuffle the toc contents, and at the same time convert the | |
7634 | skip array from booleans into offsets. */ | |
7635 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7636 | goto error_ret; | |
7637 | ||
7638 | elf_section_data (toc)->this_hdr.contents = contents; | |
7639 | ||
7640 | for (src = contents, off = 0, drop = skip; | |
7641 | src < contents + toc->size; | |
7642 | src += 8, ++drop) | |
7643 | { | |
7644 | if (*drop) | |
7645 | { | |
7646 | *drop = (unsigned long) -1; | |
7647 | off += 8; | |
7648 | } | |
7649 | else if (off != 0) | |
7650 | { | |
7651 | *drop = off; | |
7652 | memcpy (src - off, src, 8); | |
7653 | } | |
7654 | } | |
7655 | toc->rawsize = toc->size; | |
7656 | toc->size = src - contents - off; | |
7657 | ||
92b7a70f AM |
7658 | if (toc->reloc_count != 0) |
7659 | { | |
7660 | Elf_Internal_Rela *wrel; | |
7661 | bfd_size_type sz; | |
c5614fa4 | 7662 | |
92b7a70f AM |
7663 | /* Read toc relocs. */ |
7664 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7665 | TRUE); | |
7666 | if (relstart == NULL) | |
7667 | goto error_ret; | |
7668 | ||
7669 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7670 | wrel = relstart; | |
7671 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7672 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7673 | { | |
7674 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7675 | wrel->r_info = rel->r_info; | |
7676 | wrel->r_addend = rel->r_addend; | |
7677 | ++wrel; | |
7678 | } | |
8c1d1bb8 AM |
7679 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7680 | &local_syms, NULL, NULL)) | |
7681 | goto error_ret; | |
35090471 | 7682 | |
92b7a70f AM |
7683 | toc->reloc_count = wrel - relstart; |
7684 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7685 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7686 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7687 | } | |
c5614fa4 AM |
7688 | |
7689 | /* Adjust addends for relocs against the toc section sym. */ | |
7690 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7691 | { | |
7692 | if (sec->reloc_count == 0 | |
7693 | || elf_discarded_section (sec)) | |
7694 | continue; | |
7695 | ||
7696 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7697 | TRUE); | |
7698 | if (relstart == NULL) | |
7699 | goto error_ret; | |
7700 | ||
7701 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7702 | { | |
7703 | enum elf_ppc64_reloc_type r_type; | |
7704 | unsigned long r_symndx; | |
7705 | asection *sym_sec; | |
7706 | struct elf_link_hash_entry *h; | |
7707 | Elf_Internal_Sym *sym; | |
7708 | ||
7709 | r_type = ELF64_R_TYPE (rel->r_info); | |
7710 | switch (r_type) | |
7711 | { | |
7712 | default: | |
7713 | continue; | |
7714 | ||
7715 | case R_PPC64_TOC16: | |
7716 | case R_PPC64_TOC16_LO: | |
7717 | case R_PPC64_TOC16_HI: | |
7718 | case R_PPC64_TOC16_HA: | |
7719 | case R_PPC64_TOC16_DS: | |
7720 | case R_PPC64_TOC16_LO_DS: | |
7721 | case R_PPC64_ADDR64: | |
7722 | break; | |
7723 | } | |
7724 | ||
7725 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7726 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7727 | r_symndx, ibfd)) | |
7728 | goto error_ret; | |
7729 | ||
7730 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7731 | continue; | |
7732 | ||
7733 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7734 | } | |
7735 | } | |
7736 | ||
7737 | /* We shouldn't have local or global symbols defined in the TOC, | |
7738 | but handle them anyway. */ | |
7739 | if (local_syms != NULL) | |
7740 | { | |
7741 | Elf_Internal_Sym *sym; | |
7742 | ||
7743 | for (sym = local_syms; | |
7744 | sym < local_syms + symtab_hdr->sh_info; | |
7745 | ++sym) | |
cb33740c | 7746 | if (sym->st_value != 0 |
c5614fa4 AM |
7747 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
7748 | { | |
7749 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7750 | sym->st_value -= skip[sym->st_value >> 3]; | |
7751 | else | |
7752 | { | |
7753 | (*_bfd_error_handler) | |
7754 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7755 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7756 | NULL)); | |
c5614fa4 AM |
7757 | sym->st_value = 0; |
7758 | sym->st_shndx = SHN_ABS; | |
7759 | } | |
7760 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7761 | } | |
7762 | } | |
7763 | ||
7764 | /* Finally, adjust any global syms defined in the toc. */ | |
7765 | if (toc_inf.global_toc_syms) | |
7766 | { | |
7767 | toc_inf.toc = toc; | |
7768 | toc_inf.skip = skip; | |
7769 | toc_inf.global_toc_syms = FALSE; | |
7770 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7771 | &toc_inf); | |
7772 | } | |
7773 | } | |
7774 | ||
7775 | if (local_syms != NULL | |
7776 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7777 | { | |
7778 | if (!info->keep_memory) | |
7779 | free (local_syms); | |
7780 | else | |
7781 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7782 | } | |
7783 | free (skip); | |
7784 | } | |
7785 | ||
7786 | return TRUE; | |
7787 | } | |
7788 | ||
65f38f15 AM |
7789 | /* Allocate space in .plt, .got and associated reloc sections for |
7790 | dynamic relocs. */ | |
5bd4f169 | 7791 | |
b34976b6 | 7792 | static bfd_boolean |
4ce794b7 | 7793 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7794 | { |
65f38f15 AM |
7795 | struct bfd_link_info *info; |
7796 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7797 | asection *s; |
65f38f15 AM |
7798 | struct ppc_link_hash_entry *eh; |
7799 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7800 | struct got_entry *gent; |
5bd4f169 | 7801 | |
e92d460e | 7802 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7803 | return TRUE; |
5bd4f169 | 7804 | |
e92d460e AM |
7805 | if (h->root.type == bfd_link_hash_warning) |
7806 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7807 | ||
65f38f15 AM |
7808 | info = (struct bfd_link_info *) inf; |
7809 | htab = ppc_hash_table (info); | |
5bd4f169 | 7810 | |
65f38f15 | 7811 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7812 | && h->dynindx != -1 |
9c7a29a3 | 7813 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7814 | { |
411e1bfb AM |
7815 | struct plt_entry *pent; |
7816 | bfd_boolean doneone = FALSE; | |
7817 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7818 | if (pent->plt.refcount > 0) | |
7819 | { | |
411e1bfb AM |
7820 | /* If this is the first .plt entry, make room for the special |
7821 | first entry. */ | |
4ce794b7 | 7822 | s = htab->plt; |
eea6121a AM |
7823 | if (s->size == 0) |
7824 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7825 | |
eea6121a | 7826 | pent->plt.offset = s->size; |
411e1bfb AM |
7827 | |
7828 | /* Make room for this entry. */ | |
eea6121a | 7829 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7830 | |
7831 | /* Make room for the .glink code. */ | |
4ce794b7 | 7832 | s = htab->glink; |
eea6121a AM |
7833 | if (s->size == 0) |
7834 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7835 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7836 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7837 | s->size += 4; | |
7838 | s->size += 2*4; | |
411e1bfb AM |
7839 | |
7840 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7841 | s = htab->relplt; |
eea6121a | 7842 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7843 | doneone = TRUE; |
7844 | } | |
7845 | else | |
7846 | pent->plt.offset = (bfd_vma) -1; | |
7847 | if (!doneone) | |
65f38f15 | 7848 | { |
411e1bfb | 7849 | h->plt.plist = NULL; |
f5385ebf | 7850 | h->needs_plt = 0; |
65f38f15 AM |
7851 | } |
7852 | } | |
7853 | else | |
7854 | { | |
411e1bfb | 7855 | h->plt.plist = NULL; |
f5385ebf | 7856 | h->needs_plt = 0; |
65f38f15 AM |
7857 | } |
7858 | ||
951fd09b AM |
7859 | eh = (struct ppc_link_hash_entry *) h; |
7860 | /* Run through the TLS GD got entries first if we're changing them | |
7861 | to TPREL. */ | |
e7b938ca | 7862 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7863 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7864 | if (gent->got.refcount > 0 | |
7865 | && (gent->tls_type & TLS_GD) != 0) | |
7866 | { | |
7867 | /* This was a GD entry that has been converted to TPREL. If | |
7868 | there happens to be a TPREL entry we can use that one. */ | |
7869 | struct got_entry *ent; | |
7870 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7871 | if (ent->got.refcount > 0 | |
7872 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7873 | && ent->addend == gent->addend |
7874 | && ent->owner == gent->owner) | |
951fd09b AM |
7875 | { |
7876 | gent->got.refcount = 0; | |
7877 | break; | |
7878 | } | |
7879 | ||
7880 | /* If not, then we'll be using our own TPREL entry. */ | |
7881 | if (gent->got.refcount != 0) | |
7882 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7883 | } | |
7884 | ||
411e1bfb AM |
7885 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7886 | if (gent->got.refcount > 0) | |
7887 | { | |
951fd09b AM |
7888 | bfd_boolean dyn; |
7889 | ||
411e1bfb | 7890 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7891 | Undefined weak syms won't yet be marked as dynamic, |
7892 | nor will all TLS symbols. */ | |
411e1bfb | 7893 | if (h->dynindx == -1 |
b099ab9f AM |
7894 | && !h->forced_local |
7895 | && htab->elf.dynamic_sections_created) | |
411e1bfb | 7896 | { |
c152c796 | 7897 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7898 | return FALSE; |
7899 | } | |
65f38f15 | 7900 | |
d881513a | 7901 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7902 | && !h->def_dynamic) |
411e1bfb | 7903 | { |
102890f0 AM |
7904 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
7905 | gent->got.offset = (bfd_vma) -1; | |
951fd09b | 7906 | continue; |
411e1bfb | 7907 | } |
951fd09b | 7908 | |
0c8d6e5c | 7909 | if (!is_ppc64_elf (gent->owner)) |
0ffa91dd NC |
7910 | continue; |
7911 | ||
e717da7e | 7912 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7913 | gent->got.offset = s->size; |
7914 | s->size | |
d881513a | 7915 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7916 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7917 | if ((info->shared |
7918 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7919 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7920 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7921 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7922 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7923 | ? 2 * sizeof (Elf64_External_Rela) |
7924 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7925 | } |
7926 | else | |
7927 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7928 | |
b099ab9f AM |
7929 | if (eh->dyn_relocs == NULL |
7930 | || !htab->elf.dynamic_sections_created) | |
b34976b6 | 7931 | return TRUE; |
65f38f15 AM |
7932 | |
7933 | /* In the shared -Bsymbolic case, discard space allocated for | |
7934 | dynamic pc-relative relocs against symbols which turn out to be | |
7935 | defined in regular objects. For the normal shared case, discard | |
7936 | space for relocs that have become local due to symbol visibility | |
7937 | changes. */ | |
7938 | ||
7939 | if (info->shared) | |
7940 | { | |
9c7a29a3 | 7941 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 7942 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
7943 | generated via assembly. We want calls to protected symbols to |
7944 | resolve directly to the function rather than going via the plt. | |
7945 | If people want function pointer comparisons to work as expected | |
7946 | then they should avoid writing weird assembly. */ | |
09695f56 | 7947 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7948 | { |
7949 | struct ppc_dyn_relocs **pp; | |
7950 | ||
7951 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7952 | { |
65f38f15 AM |
7953 | p->count -= p->pc_count; |
7954 | p->pc_count = 0; | |
7955 | if (p->count == 0) | |
7956 | *pp = p->next; | |
7957 | else | |
7958 | pp = &p->next; | |
5bd4f169 | 7959 | } |
65f38f15 | 7960 | } |
4e795f50 AM |
7961 | |
7962 | /* Also discard relocs on undefined weak syms with non-default | |
7963 | visibility. */ | |
cab87ef9 AM |
7964 | if (eh->dyn_relocs != NULL |
7965 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7966 | { |
7967 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7968 | eh->dyn_relocs = NULL; | |
7969 | ||
7970 | /* Make sure this symbol is output as a dynamic symbol. | |
7971 | Undefined weak syms won't yet be marked as dynamic. */ | |
7972 | else if (h->dynindx == -1 | |
7973 | && !h->forced_local) | |
7974 | { | |
7975 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7976 | return FALSE; | |
7977 | } | |
7978 | } | |
65f38f15 | 7979 | } |
f4656909 | 7980 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7981 | { |
7982 | /* For the non-shared case, discard space for relocs against | |
7983 | symbols which turn out to need copy relocs or are not | |
7984 | dynamic. */ | |
7985 | ||
f5385ebf | 7986 | if (!h->non_got_ref |
f5385ebf | 7987 | && !h->def_regular) |
65f38f15 AM |
7988 | { |
7989 | /* Make sure this symbol is output as a dynamic symbol. | |
7990 | Undefined weak syms won't yet be marked as dynamic. */ | |
7991 | if (h->dynindx == -1 | |
f5385ebf | 7992 | && !h->forced_local) |
65f38f15 | 7993 | { |
c152c796 | 7994 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7995 | return FALSE; |
65f38f15 AM |
7996 | } |
7997 | ||
7998 | /* If that succeeded, we know we'll be keeping all the | |
7999 | relocs. */ | |
8000 | if (h->dynindx != -1) | |
8001 | goto keep; | |
8002 | } | |
8003 | ||
8004 | eh->dyn_relocs = NULL; | |
8005 | ||
ec338859 | 8006 | keep: ; |
65f38f15 AM |
8007 | } |
8008 | ||
8009 | /* Finally, allocate space. */ | |
8010 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8011 | { | |
8012 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8013 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8014 | } |
8015 | ||
b34976b6 | 8016 | return TRUE; |
65f38f15 AM |
8017 | } |
8018 | ||
8019 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8020 | ||
b34976b6 | 8021 | static bfd_boolean |
4ce794b7 | 8022 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8023 | { |
8024 | struct ppc_link_hash_entry *eh; | |
8025 | struct ppc_dyn_relocs *p; | |
8026 | ||
e92d460e AM |
8027 | if (h->root.type == bfd_link_hash_warning) |
8028 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8029 | ||
65f38f15 AM |
8030 | eh = (struct ppc_link_hash_entry *) h; |
8031 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8032 | { | |
8033 | asection *s = p->sec->output_section; | |
8034 | ||
8035 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8036 | { | |
4ce794b7 | 8037 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8038 | |
8039 | info->flags |= DF_TEXTREL; | |
8040 | ||
8041 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8042 | return FALSE; |
65f38f15 AM |
8043 | } |
8044 | } | |
b34976b6 | 8045 | return TRUE; |
65f38f15 AM |
8046 | } |
8047 | ||
8048 | /* Set the sizes of the dynamic sections. */ | |
8049 | ||
b34976b6 | 8050 | static bfd_boolean |
4ce794b7 AM |
8051 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8052 | struct bfd_link_info *info) | |
65f38f15 AM |
8053 | { |
8054 | struct ppc_link_hash_table *htab; | |
8055 | bfd *dynobj; | |
8056 | asection *s; | |
b34976b6 | 8057 | bfd_boolean relocs; |
65f38f15 AM |
8058 | bfd *ibfd; |
8059 | ||
8060 | htab = ppc_hash_table (info); | |
8061 | dynobj = htab->elf.dynobj; | |
8062 | if (dynobj == NULL) | |
8063 | abort (); | |
8064 | ||
8065 | if (htab->elf.dynamic_sections_created) | |
8066 | { | |
8067 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 8068 | if (info->executable) |
65f38f15 AM |
8069 | { |
8070 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
8071 | if (s == NULL) | |
8072 | abort (); | |
eea6121a | 8073 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
8074 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
8075 | } | |
8076 | } | |
8077 | ||
8078 | /* Set up .got offsets for local syms, and space for local dynamic | |
8079 | relocs. */ | |
8080 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8081 | { | |
411e1bfb AM |
8082 | struct got_entry **lgot_ents; |
8083 | struct got_entry **end_lgot_ents; | |
e7b938ca | 8084 | char *lgot_masks; |
65f38f15 AM |
8085 | bfd_size_type locsymcount; |
8086 | Elf_Internal_Shdr *symtab_hdr; | |
8087 | asection *srel; | |
8088 | ||
0c8d6e5c | 8089 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
8090 | continue; |
8091 | ||
8092 | for (s = ibfd->sections; s != NULL; s = s->next) | |
8093 | { | |
ec338859 | 8094 | struct ppc_dyn_relocs *p; |
65f38f15 | 8095 | |
6edfbbad | 8096 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 8097 | { |
ec338859 AM |
8098 | if (!bfd_is_abs_section (p->sec) |
8099 | && bfd_is_abs_section (p->sec->output_section)) | |
8100 | { | |
8101 | /* Input section has been discarded, either because | |
8102 | it is a copy of a linkonce section or due to | |
8103 | linker script /DISCARD/, so we'll be discarding | |
8104 | the relocs too. */ | |
8105 | } | |
248866a8 | 8106 | else if (p->count != 0) |
ec338859 AM |
8107 | { |
8108 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 8109 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
8110 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
8111 | info->flags |= DF_TEXTREL; | |
ec338859 | 8112 | } |
65f38f15 AM |
8113 | } |
8114 | } | |
8115 | ||
411e1bfb AM |
8116 | lgot_ents = elf_local_got_ents (ibfd); |
8117 | if (!lgot_ents) | |
65f38f15 AM |
8118 | continue; |
8119 | ||
0ffa91dd | 8120 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 8121 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 8122 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 8123 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
8124 | s = ppc64_elf_tdata (ibfd)->got; |
8125 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 8126 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 8127 | { |
411e1bfb AM |
8128 | struct got_entry *ent; |
8129 | ||
8130 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
8131 | if (ent->got.refcount > 0) | |
8132 | { | |
e7b938ca | 8133 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 8134 | { |
102890f0 AM |
8135 | ppc64_tlsld_got (ibfd)->refcount += 1; |
8136 | ent->got.offset = (bfd_vma) -1; | |
411e1bfb AM |
8137 | } |
8138 | else | |
8139 | { | |
eea6121a | 8140 | ent->got.offset = s->size; |
e7b938ca | 8141 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 8142 | { |
eea6121a | 8143 | s->size += 16; |
411e1bfb | 8144 | if (info->shared) |
eea6121a | 8145 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
8146 | } |
8147 | else | |
8148 | { | |
eea6121a | 8149 | s->size += 8; |
411e1bfb | 8150 | if (info->shared) |
eea6121a | 8151 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8152 | } |
8153 | } | |
8154 | } | |
8155 | else | |
8156 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
8157 | } |
8158 | } | |
8159 | ||
8160 | /* Allocate global sym .plt and .got entries, and space for global | |
8161 | sym dynamic relocs. */ | |
4ce794b7 | 8162 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 8163 | |
102890f0 AM |
8164 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8165 | { | |
0c8d6e5c | 8166 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
8167 | continue; |
8168 | ||
8169 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
8170 | { | |
8171 | s = ppc64_elf_tdata (ibfd)->got; | |
8172 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
8173 | s->size += 16; | |
8174 | if (info->shared) | |
8175 | { | |
8176 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
8177 | srel->size += sizeof (Elf64_External_Rela); | |
8178 | } | |
8179 | } | |
8180 | else | |
8181 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
8182 | } | |
8183 | ||
65f38f15 AM |
8184 | /* We now have determined the sizes of the various dynamic sections. |
8185 | Allocate memory for them. */ | |
b34976b6 | 8186 | relocs = FALSE; |
65f38f15 AM |
8187 | for (s = dynobj->sections; s != NULL; s = s->next) |
8188 | { | |
8189 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
8190 | continue; | |
8191 | ||
4ce794b7 | 8192 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
8193 | /* These haven't been allocated yet; don't strip. */ |
8194 | continue; | |
e717da7e AM |
8195 | else if (s == htab->got |
8196 | || s == htab->plt | |
c456f082 AM |
8197 | || s == htab->glink |
8198 | || s == htab->dynbss) | |
65f38f15 AM |
8199 | { |
8200 | /* Strip this section if we don't need it; see the | |
8201 | comment below. */ | |
5bd4f169 | 8202 | } |
0112cd26 | 8203 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 8204 | { |
c456f082 | 8205 | if (s->size != 0) |
5bd4f169 | 8206 | { |
4ce794b7 | 8207 | if (s != htab->relplt) |
b34976b6 | 8208 | relocs = TRUE; |
5bd4f169 AM |
8209 | |
8210 | /* We use the reloc_count field as a counter if we need | |
8211 | to copy relocs into the output file. */ | |
8212 | s->reloc_count = 0; | |
8213 | } | |
8214 | } | |
65f38f15 | 8215 | else |
5bd4f169 AM |
8216 | { |
8217 | /* It's not one of our sections, so don't allocate space. */ | |
8218 | continue; | |
8219 | } | |
8220 | ||
eea6121a | 8221 | if (s->size == 0) |
5bd4f169 | 8222 | { |
c456f082 AM |
8223 | /* If we don't need this section, strip it from the |
8224 | output file. This is mostly to handle .rela.bss and | |
8225 | .rela.plt. We must create both sections in | |
8226 | create_dynamic_sections, because they must be created | |
8227 | before the linker maps input sections to output | |
8228 | sections. The linker does that before | |
8229 | adjust_dynamic_symbol is called, and it is that | |
8230 | function which decides whether anything needs to go | |
8231 | into these sections. */ | |
8423293d | 8232 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8233 | continue; |
8234 | } | |
8235 | ||
c456f082 | 8236 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8237 | continue; |
8238 | ||
65f38f15 AM |
8239 | /* Allocate memory for the section contents. We use bfd_zalloc |
8240 | here in case unused entries are not reclaimed before the | |
8241 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8242 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8243 | sections instead of garbage. | |
8244 | We also rely on the section contents being zero when writing | |
8245 | the GOT. */ | |
eea6121a | 8246 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8247 | if (s->contents == NULL) |
b34976b6 | 8248 | return FALSE; |
5bd4f169 AM |
8249 | } |
8250 | ||
e717da7e AM |
8251 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8252 | { | |
0c8d6e5c | 8253 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
8254 | continue; |
8255 | ||
e717da7e AM |
8256 | s = ppc64_elf_tdata (ibfd)->got; |
8257 | if (s != NULL && s != htab->got) | |
8258 | { | |
eea6121a | 8259 | if (s->size == 0) |
8423293d | 8260 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8261 | else |
8262 | { | |
eea6121a | 8263 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8264 | if (s->contents == NULL) |
8265 | return FALSE; | |
8266 | } | |
8267 | } | |
8268 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8269 | if (s != NULL) | |
8270 | { | |
eea6121a | 8271 | if (s->size == 0) |
8423293d | 8272 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8273 | else |
8274 | { | |
eea6121a | 8275 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8276 | if (s->contents == NULL) |
8277 | return FALSE; | |
8278 | relocs = TRUE; | |
8279 | s->reloc_count = 0; | |
8280 | } | |
8281 | } | |
8282 | } | |
8283 | ||
e86ce104 | 8284 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8285 | { |
8286 | /* Add some entries to the .dynamic section. We fill in the | |
8287 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8288 | must add the entries now so that we get the correct size for | |
8289 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8290 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8291 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8292 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8293 | |
36af4a4e | 8294 | if (info->executable) |
5bd4f169 | 8295 | { |
dc810e39 | 8296 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8297 | return FALSE; |
5bd4f169 AM |
8298 | } |
8299 | ||
eea6121a | 8300 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8301 | { |
dc810e39 AM |
8302 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8303 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8304 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8305 | || !add_dynamic_entry (DT_JMPREL, 0) |
8306 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8307 | return FALSE; |
5bd4f169 AM |
8308 | } |
8309 | ||
19397422 AM |
8310 | if (NO_OPD_RELOCS) |
8311 | { | |
8312 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8313 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8314 | return FALSE; |
19397422 AM |
8315 | } |
8316 | ||
5bd4f169 AM |
8317 | if (relocs) |
8318 | { | |
dc810e39 AM |
8319 | if (!add_dynamic_entry (DT_RELA, 0) |
8320 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8321 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8322 | return FALSE; |
5bd4f169 | 8323 | |
65f38f15 AM |
8324 | /* If any dynamic relocs apply to a read-only section, |
8325 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8326 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8327 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8328 | |
65f38f15 | 8329 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8330 | { |
65f38f15 | 8331 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8332 | return FALSE; |
5bd4f169 | 8333 | } |
5bd4f169 | 8334 | } |
5bd4f169 | 8335 | } |
65f38f15 | 8336 | #undef add_dynamic_entry |
5bd4f169 | 8337 | |
b34976b6 | 8338 | return TRUE; |
5bd4f169 AM |
8339 | } |
8340 | ||
721956f4 | 8341 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8342 | |
4ce794b7 AM |
8343 | static inline enum ppc_stub_type |
8344 | ppc_type_of_stub (asection *input_sec, | |
8345 | const Elf_Internal_Rela *rel, | |
8346 | struct ppc_link_hash_entry **hash, | |
8347 | bfd_vma destination) | |
5bd4f169 | 8348 | { |
721956f4 AM |
8349 | struct ppc_link_hash_entry *h = *hash; |
8350 | bfd_vma location; | |
8351 | bfd_vma branch_offset; | |
8352 | bfd_vma max_branch_offset; | |
4ce794b7 | 8353 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8354 | |
721956f4 AM |
8355 | if (h != NULL) |
8356 | { | |
7fe2b9a6 AM |
8357 | struct ppc_link_hash_entry *fdh = h; |
8358 | if (fdh->oh != NULL | |
8359 | && fdh->oh->is_func_descriptor) | |
8360 | fdh = fdh->oh; | |
8387904d | 8361 | |
7fe2b9a6 | 8362 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8363 | { |
411e1bfb | 8364 | struct plt_entry *ent; |
8387904d | 8365 | |
7fe2b9a6 | 8366 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8367 | if (ent->addend == rel->r_addend |
8368 | && ent->plt.offset != (bfd_vma) -1) | |
8369 | { | |
7fe2b9a6 | 8370 | *hash = fdh; |
411e1bfb AM |
8371 | return ppc_stub_plt_call; |
8372 | } | |
5bd4f169 AM |
8373 | } |
8374 | ||
7fe2b9a6 AM |
8375 | /* Here, we know we don't have a plt entry. If we don't have a |
8376 | either a defined function descriptor or a defined entry symbol | |
8377 | in a regular object file, then it is pointless trying to make | |
8378 | any other type of stub. */ | |
8379 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8380 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8381 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8382 | && !((h->elf.root.type == bfd_link_hash_defined | |
8383 | || h->elf.root.type == bfd_link_hash_defweak) | |
8384 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8385 | return ppc_stub_none; |
5d1634d7 | 8386 | } |
5d1634d7 | 8387 | |
721956f4 AM |
8388 | /* Determine where the call point is. */ |
8389 | location = (input_sec->output_offset | |
8390 | + input_sec->output_section->vma | |
8391 | + rel->r_offset); | |
5d1634d7 | 8392 | |
721956f4 AM |
8393 | branch_offset = destination - location; |
8394 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8395 | |
721956f4 AM |
8396 | /* Determine if a long branch stub is needed. */ |
8397 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8398 | if (r_type != R_PPC64_REL24) |
721956f4 | 8399 | max_branch_offset = 1 << 15; |
5d1634d7 | 8400 | |
721956f4 AM |
8401 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8402 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8403 | is needed later. */ | |
8404 | return ppc_stub_long_branch; | |
5d1634d7 | 8405 | |
721956f4 | 8406 | return ppc_stub_none; |
5d1634d7 AM |
8407 | } |
8408 | ||
8409 | /* Build a .plt call stub. */ | |
8410 | ||
4ce794b7 | 8411 | static inline bfd_byte * |
176a0d42 | 8412 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
5d1634d7 AM |
8413 | { |
8414 | #define PPC_LO(v) ((v) & 0xffff) | |
8415 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8416 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8417 | ||
ac2df442 AM |
8418 | if (PPC_HA (offset) != 0) |
8419 | { | |
176a0d42 AM |
8420 | if (r != NULL) |
8421 | { | |
8422 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8423 | r[1].r_offset = r[0].r_offset + 8; | |
8424 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8425 | r[1].r_addend = r[0].r_addend; | |
8426 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8427 | { | |
8428 | r[2].r_offset = r[1].r_offset + 4; | |
8429 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
8430 | r[2].r_addend = r[0].r_addend; | |
8431 | } | |
8432 | else | |
8433 | { | |
8434 | r[2].r_offset = r[1].r_offset + 8; | |
8435 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8436 | r[2].r_addend = r[0].r_addend + 8; | |
8437 | r[3].r_offset = r[2].r_offset + 4; | |
8438 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8439 | r[3].r_addend = r[0].r_addend + 16; | |
8440 | } | |
8441 | } | |
ac2df442 AM |
8442 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
8443 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
8444 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8445 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8446 | { | |
8447 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
8448 | offset = 0; | |
8449 | } | |
8450 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8451 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
8452 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
8453 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8454 | } | |
8455 | else | |
8456 | { | |
176a0d42 AM |
8457 | if (r != NULL) |
8458 | { | |
8459 | r[0].r_offset += 4; | |
8460 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8461 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8462 | { | |
8463 | r[1].r_offset = r[0].r_offset + 4; | |
8464 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
8465 | r[1].r_addend = r[0].r_addend; | |
8466 | } | |
8467 | else | |
8468 | { | |
8469 | r[1].r_offset = r[0].r_offset + 8; | |
8470 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8471 | r[1].r_addend = r[0].r_addend + 16; | |
8472 | r[2].r_offset = r[1].r_offset + 4; | |
8473 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8474 | r[2].r_addend = r[0].r_addend + 8; | |
8475 | } | |
8476 | } | |
ac2df442 AM |
8477 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
8478 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
8479 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
8480 | { | |
8481 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
8482 | offset = 0; | |
8483 | } | |
8484 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8485 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
8486 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
8487 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8488 | } | |
5d1634d7 AM |
8489 | return p; |
8490 | } | |
8491 | ||
176a0d42 AM |
8492 | static Elf_Internal_Rela * |
8493 | get_relocs (asection *sec, int count) | |
8494 | { | |
8495 | Elf_Internal_Rela *relocs; | |
8496 | struct bfd_elf_section_data *elfsec_data; | |
8497 | ||
8498 | elfsec_data = elf_section_data (sec); | |
8499 | relocs = elfsec_data->relocs; | |
8500 | if (relocs == NULL) | |
8501 | { | |
8502 | bfd_size_type relsize; | |
8503 | relsize = sec->reloc_count * sizeof (*relocs); | |
8504 | relocs = bfd_alloc (sec->owner, relsize); | |
8505 | if (relocs == NULL) | |
8506 | return NULL; | |
8507 | elfsec_data->relocs = relocs; | |
8508 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
8509 | * sizeof (Elf64_External_Rela)); | |
8510 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
8511 | sec->reloc_count = 0; | |
8512 | } | |
8513 | relocs += sec->reloc_count; | |
8514 | sec->reloc_count += count; | |
8515 | return relocs; | |
8516 | } | |
8517 | ||
b34976b6 | 8518 | static bfd_boolean |
4ce794b7 | 8519 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8520 | { |
721956f4 AM |
8521 | struct ppc_stub_hash_entry *stub_entry; |
8522 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8523 | struct bfd_link_info *info; |
8524 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8525 | bfd_byte *loc; |
8526 | bfd_byte *p; | |
411e1bfb | 8527 | struct plt_entry *ent; |
ee75fd95 | 8528 | bfd_vma dest, off; |
721956f4 | 8529 | int size; |
176a0d42 | 8530 | Elf_Internal_Rela *r; |
5d1634d7 | 8531 | |
721956f4 AM |
8532 | /* Massage our args to the form they really have. */ |
8533 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8534 | info = in_arg; |
5d1634d7 | 8535 | |
5d1634d7 AM |
8536 | htab = ppc_hash_table (info); |
8537 | ||
721956f4 | 8538 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8539 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8540 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8541 | |
4ce794b7 | 8542 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8543 | switch (stub_entry->stub_type) |
5d1634d7 | 8544 | { |
721956f4 | 8545 | case ppc_stub_long_branch: |
ad8e1ba5 | 8546 | case ppc_stub_long_branch_r2off: |
721956f4 | 8547 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8548 | off = dest = (stub_entry->target_value |
8549 | + stub_entry->target_section->output_offset | |
8550 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8551 | |
721956f4 AM |
8552 | /* And this is where we are coming from. */ |
8553 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8554 | + stub_entry->stub_sec->output_offset |
8555 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8556 | |
ac2df442 AM |
8557 | size = 4; |
8558 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 AM |
8559 | { |
8560 | bfd_vma r2off; | |
8561 | ||
8562 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8563 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8564 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8565 | loc += 4; |
ac2df442 AM |
8566 | size = 12; |
8567 | if (PPC_HA (r2off) != 0) | |
8568 | { | |
8569 | size = 16; | |
8570 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8571 | loc += 4; | |
8572 | } | |
97b639ba | 8573 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 8574 | loc += 4; |
ac2df442 | 8575 | off -= size - 4; |
ad8e1ba5 | 8576 | } |
97b639ba | 8577 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8578 | |
5c3dead3 AM |
8579 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8580 | { | |
8581 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8582 | stub_entry->root.string); | |
8583 | htab->stub_error = TRUE; | |
8584 | return FALSE; | |
8585 | } | |
ee75fd95 AM |
8586 | |
8587 | if (info->emitrelocations) | |
8588 | { | |
176a0d42 AM |
8589 | r = get_relocs (stub_entry->stub_sec, 1); |
8590 | if (r == NULL) | |
8591 | return FALSE; | |
ee75fd95 AM |
8592 | r->r_offset = loc - stub_entry->stub_sec->contents; |
8593 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8594 | r->r_addend = dest; | |
8595 | if (stub_entry->h != NULL) | |
8596 | { | |
8597 | struct elf_link_hash_entry **hashes; | |
8598 | unsigned long symndx; | |
8599 | struct ppc_link_hash_entry *h; | |
8600 | ||
8601 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8602 | if (hashes == NULL) | |
8603 | { | |
8604 | bfd_size_type hsize; | |
8605 | ||
8606 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8607 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8608 | if (hashes == NULL) | |
8609 | return FALSE; | |
8610 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8611 | htab->stub_globals = 1; | |
8612 | } | |
8613 | symndx = htab->stub_globals++; | |
8614 | h = stub_entry->h; | |
8615 | hashes[symndx] = &h->elf; | |
8616 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8617 | if (h->oh != NULL && h->oh->is_func) | |
8618 | h = h->oh; | |
8619 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8620 | /* H is an opd symbol. The addend must be zero. */ | |
8621 | r->r_addend = 0; | |
8622 | else | |
8623 | { | |
8624 | off = (h->elf.root.u.def.value | |
8625 | + h->elf.root.u.def.section->output_offset | |
8626 | + h->elf.root.u.def.section->output_section->vma); | |
8627 | r->r_addend -= off; | |
8628 | } | |
8629 | } | |
8630 | } | |
721956f4 | 8631 | break; |
e86ce104 | 8632 | |
721956f4 | 8633 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8634 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8635 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8636 | stub_entry->root.string + 9, | |
b34976b6 | 8637 | FALSE, FALSE); |
721956f4 AM |
8638 | if (br_entry == NULL) |
8639 | { | |
8640 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8641 | stub_entry->root.string); |
b34976b6 AM |
8642 | htab->stub_error = TRUE; |
8643 | return FALSE; | |
721956f4 AM |
8644 | } |
8645 | ||
176a0d42 AM |
8646 | dest = (stub_entry->target_value |
8647 | + stub_entry->target_section->output_offset | |
8648 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 8649 | |
176a0d42 | 8650 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 8651 | htab->brlt->contents + br_entry->offset); |
721956f4 | 8652 | |
f94498ff | 8653 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 8654 | { |
f94498ff | 8655 | br_entry->iter = 0; |
84f5d08e | 8656 | |
f94498ff | 8657 | if (htab->relbrlt != NULL) |
84f5d08e | 8658 | { |
f94498ff AM |
8659 | /* Create a reloc for the branch lookup table entry. */ |
8660 | Elf_Internal_Rela rela; | |
8661 | bfd_byte *rl; | |
8662 | ||
8663 | rela.r_offset = (br_entry->offset | |
8664 | + htab->brlt->output_offset | |
8665 | + htab->brlt->output_section->vma); | |
8666 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8667 | rela.r_addend = dest; |
f94498ff AM |
8668 | |
8669 | rl = htab->relbrlt->contents; | |
8670 | rl += (htab->relbrlt->reloc_count++ | |
8671 | * sizeof (Elf64_External_Rela)); | |
8672 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
8673 | } | |
8674 | else if (info->emitrelocations) | |
8675 | { | |
176a0d42 AM |
8676 | r = get_relocs (htab->brlt, 1); |
8677 | if (r == NULL) | |
8678 | return FALSE; | |
8679 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
8680 | normal reloc processing. Symbols and offsets are not | |
8681 | translated from input file to output file form, so | |
8682 | set up the offset per the output file. */ | |
f94498ff AM |
8683 | r->r_offset = (br_entry->offset |
8684 | + htab->brlt->output_offset | |
8685 | + htab->brlt->output_section->vma); | |
8686 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 8687 | r->r_addend = dest; |
84f5d08e | 8688 | } |
84f5d08e | 8689 | } |
721956f4 | 8690 | |
176a0d42 AM |
8691 | dest = (br_entry->offset |
8692 | + htab->brlt->output_offset | |
8693 | + htab->brlt->output_section->vma); | |
8694 | ||
8695 | off = (dest | |
4ce794b7 | 8696 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 8697 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8698 | |
ad8e1ba5 | 8699 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8700 | { |
8701 | (*_bfd_error_handler) | |
e86ce104 | 8702 | (_("linkage table error against `%s'"), |
721956f4 | 8703 | stub_entry->root.string); |
5d1634d7 | 8704 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8705 | htab->stub_error = TRUE; |
8706 | return FALSE; | |
5d1634d7 | 8707 | } |
41bd81ab | 8708 | |
176a0d42 AM |
8709 | if (info->emitrelocations) |
8710 | { | |
8711 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
8712 | if (r == NULL) | |
8713 | return FALSE; | |
8714 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
8715 | if (bfd_big_endian (info->output_bfd)) |
8716 | r[0].r_offset += 2; | |
176a0d42 AM |
8717 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
8718 | r[0].r_offset += 4; | |
8719 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
8720 | r[0].r_addend = dest; | |
8721 | if (PPC_HA (off) != 0) | |
8722 | { | |
8723 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
8724 | r[1].r_offset = r[0].r_offset + 4; | |
8725 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
8726 | r[1].r_addend = r[0].r_addend; | |
8727 | } | |
8728 | } | |
8729 | ||
ad8e1ba5 AM |
8730 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8731 | { | |
176a0d42 | 8732 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8733 | { |
8734 | size = 16; | |
176a0d42 | 8735 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8736 | loc += 4; |
176a0d42 | 8737 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8738 | } |
8739 | else | |
8740 | { | |
8741 | size = 12; | |
176a0d42 | 8742 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 8743 | } |
ad8e1ba5 AM |
8744 | } |
8745 | else | |
8746 | { | |
8747 | bfd_vma r2off; | |
8748 | ||
8749 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8750 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8751 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8752 | loc += 4; |
ac2df442 | 8753 | size = 20; |
176a0d42 | 8754 | if (PPC_HA (off) != 0) |
ac2df442 AM |
8755 | { |
8756 | size += 4; | |
176a0d42 | 8757 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 8758 | loc += 4; |
176a0d42 | 8759 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
8760 | loc += 4; |
8761 | } | |
8762 | else | |
8763 | { | |
176a0d42 | 8764 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
8765 | loc += 4; |
8766 | } | |
8767 | ||
8768 | if (PPC_HA (r2off) != 0) | |
8769 | { | |
8770 | size += 4; | |
8771 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
8772 | loc += 4; | |
8773 | } | |
97b639ba | 8774 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8775 | } |
8776 | loc += 4; | |
97b639ba | 8777 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8778 | loc += 4; |
97b639ba | 8779 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8780 | break; |
5d1634d7 | 8781 | |
721956f4 | 8782 | case ppc_stub_plt_call: |
c862ae31 AM |
8783 | /* Do the best we can for shared libraries built without |
8784 | exporting ".foo" for each "foo". This can happen when symbol | |
8785 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8786 | if (stub_entry->h->oh != NULL |
8787 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8788 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8789 | { |
8790 | /* Point the symbol at the stub. There may be multiple stubs, | |
8791 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8792 | defined somewhere. Maybe defining the symbol in the stub |
8793 | section is a silly idea. If we didn't do this, htab->top_id | |
8794 | could disappear. */ | |
34814b9f AM |
8795 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8796 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8797 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8798 | } |
8799 | ||
721956f4 | 8800 | /* Now build the stub. */ |
176a0d42 | 8801 | dest = (bfd_vma) -1; |
411e1bfb AM |
8802 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8803 | if (ent->addend == stub_entry->addend) | |
8804 | { | |
176a0d42 | 8805 | dest = ent->plt.offset; |
411e1bfb AM |
8806 | break; |
8807 | } | |
176a0d42 | 8808 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
8809 | abort (); |
8810 | ||
176a0d42 AM |
8811 | dest &= ~ (bfd_vma) 1; |
8812 | dest += (htab->plt->output_offset | |
8813 | + htab->plt->output_section->vma); | |
8814 | ||
8815 | off = (dest | |
8816 | - elf_gp (htab->plt->output_section->owner) | |
8817 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
721956f4 | 8818 | |
ad8e1ba5 | 8819 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8820 | { |
8821 | (*_bfd_error_handler) | |
8822 | (_("linkage table error against `%s'"), | |
8823 | stub_entry->h->elf.root.root.string); | |
8824 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8825 | htab->stub_error = TRUE; |
8826 | return FALSE; | |
721956f4 AM |
8827 | } |
8828 | ||
176a0d42 AM |
8829 | r = NULL; |
8830 | if (info->emitrelocations) | |
8831 | { | |
8832 | r = get_relocs (stub_entry->stub_sec, | |
8833 | (2 + (PPC_HA (off) != 0) | |
8834 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
8835 | if (r == NULL) | |
8836 | return FALSE; | |
8837 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
8838 | if (bfd_big_endian (info->output_bfd)) |
8839 | r[0].r_offset += 2; | |
176a0d42 AM |
8840 | r[0].r_addend = dest; |
8841 | } | |
8842 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
721956f4 AM |
8843 | size = p - loc; |
8844 | break; | |
8845 | ||
8846 | default: | |
8847 | BFD_FAIL (); | |
b34976b6 | 8848 | return FALSE; |
721956f4 AM |
8849 | } |
8850 | ||
eea6121a | 8851 | stub_entry->stub_sec->size += size; |
97b639ba | 8852 | |
ee75fd95 | 8853 | if (htab->emit_stub_syms) |
97b639ba AM |
8854 | { |
8855 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8856 | size_t len1, len2; |
8857 | char *name; | |
8858 | const char *const stub_str[] = { "long_branch", | |
8859 | "long_branch_r2off", | |
8860 | "plt_branch", | |
8861 | "plt_branch_r2off", | |
8862 | "plt_call" }; | |
8863 | ||
8864 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8865 | len2 = strlen (stub_entry->root.string); | |
8866 | name = bfd_malloc (len1 + len2 + 2); | |
8867 | if (name == NULL) | |
8868 | return FALSE; | |
8869 | memcpy (name, stub_entry->root.string, 9); | |
8870 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8871 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8872 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8873 | if (h == NULL) |
8874 | return FALSE; | |
8875 | if (h->root.type == bfd_link_hash_new) | |
8876 | { | |
8877 | h->root.type = bfd_link_hash_defined; | |
8878 | h->root.u.def.section = stub_entry->stub_sec; | |
8879 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8880 | h->ref_regular = 1; |
8881 | h->def_regular = 1; | |
8882 | h->ref_regular_nonweak = 1; | |
8883 | h->forced_local = 1; | |
8884 | h->non_elf = 0; | |
97b639ba AM |
8885 | } |
8886 | } | |
8887 | ||
b34976b6 | 8888 | return TRUE; |
721956f4 AM |
8889 | } |
8890 | ||
8891 | /* As above, but don't actually build the stub. Just bump offset so | |
8892 | we know stub section sizes, and select plt_branch stubs where | |
8893 | long_branch stubs won't do. */ | |
8894 | ||
b34976b6 | 8895 | static bfd_boolean |
4ce794b7 | 8896 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8897 | { |
8898 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8899 | struct bfd_link_info *info; |
721956f4 AM |
8900 | struct ppc_link_hash_table *htab; |
8901 | bfd_vma off; | |
8902 | int size; | |
8903 | ||
8904 | /* Massage our args to the form they really have. */ | |
8905 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8906 | info = in_arg; |
8907 | ||
8908 | htab = ppc_hash_table (info); | |
721956f4 AM |
8909 | |
8910 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8911 | { | |
411e1bfb | 8912 | struct plt_entry *ent; |
58ac9f71 | 8913 | off = (bfd_vma) -1; |
411e1bfb AM |
8914 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8915 | if (ent->addend == stub_entry->addend) | |
8916 | { | |
8917 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8918 | break; | |
8919 | } | |
58ac9f71 | 8920 | if (off >= (bfd_vma) -2) |
411e1bfb | 8921 | abort (); |
4ce794b7 AM |
8922 | off += (htab->plt->output_offset |
8923 | + htab->plt->output_section->vma | |
8924 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8925 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8926 | |
ad8e1ba5 | 8927 | size = PLT_CALL_STUB_SIZE; |
ac2df442 AM |
8928 | if (PPC_HA (off) == 0) |
8929 | size -= 4; | |
4ce794b7 | 8930 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 | 8931 | size += 4; |
176a0d42 AM |
8932 | if (info->emitrelocations) |
8933 | { | |
8934 | stub_entry->stub_sec->reloc_count | |
8935 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
8936 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8937 | } | |
721956f4 AM |
8938 | } |
8939 | else | |
8940 | { | |
ad8e1ba5 AM |
8941 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8942 | variants. */ | |
ac2df442 AM |
8943 | bfd_vma r2off = 0; |
8944 | ||
721956f4 AM |
8945 | off = (stub_entry->target_value |
8946 | + stub_entry->target_section->output_offset | |
8947 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8948 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8949 | + stub_entry->stub_sec->output_offset |
8950 | + stub_entry->stub_sec->output_section->vma); | |
8951 | ||
ad8e1ba5 AM |
8952 | /* Reset the stub type from the plt variant in case we now |
8953 | can reach with a shorter stub. */ | |
8954 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8955 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8956 | ||
8957 | size = 4; | |
8958 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8959 | { | |
ac2df442 AM |
8960 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
8961 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
8962 | size = 12; | |
8963 | if (PPC_HA (r2off) != 0) | |
8964 | size = 16; | |
8965 | off -= size - 4; | |
ad8e1ba5 AM |
8966 | } |
8967 | ||
8968 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8969 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8970 | { | |
8971 | struct ppc_branch_hash_entry *br_entry; | |
8972 | ||
8973 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8974 | stub_entry->root.string + 9, | |
b34976b6 | 8975 | TRUE, FALSE); |
721956f4 AM |
8976 | if (br_entry == NULL) |
8977 | { | |
8978 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8979 | stub_entry->root.string); |
b34976b6 AM |
8980 | htab->stub_error = TRUE; |
8981 | return FALSE; | |
721956f4 AM |
8982 | } |
8983 | ||
8984 | if (br_entry->iter != htab->stub_iteration) | |
8985 | { | |
8986 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8987 | br_entry->offset = htab->brlt->size; |
8988 | htab->brlt->size += 8; | |
63bc6f6c | 8989 | |
ee75fd95 | 8990 | if (htab->relbrlt != NULL) |
eea6121a | 8991 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8992 | else if (info->emitrelocations) |
8993 | { | |
8994 | htab->brlt->reloc_count += 1; | |
8995 | htab->brlt->flags |= SEC_RELOC; | |
8996 | } | |
721956f4 | 8997 | } |
ad8e1ba5 AM |
8998 | |
8999 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
9000 | off = (br_entry->offset |
9001 | + htab->brlt->output_offset | |
9002 | + htab->brlt->output_section->vma | |
9003 | - elf_gp (htab->brlt->output_section->owner) | |
9004 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
9005 | ||
176a0d42 AM |
9006 | if (info->emitrelocations) |
9007 | { | |
9008 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
9009 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9010 | } | |
9011 | ||
ac2df442 AM |
9012 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9013 | { | |
9014 | size = 12; | |
176a0d42 | 9015 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9016 | size = 16; |
9017 | } | |
9018 | else | |
9019 | { | |
9020 | size = 20; | |
176a0d42 | 9021 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9022 | size += 4; |
9023 | ||
9024 | if (PPC_HA (r2off) != 0) | |
9025 | size += 4; | |
9026 | } | |
721956f4 | 9027 | } |
84f5d08e AM |
9028 | else if (info->emitrelocations) |
9029 | { | |
9030 | stub_entry->stub_sec->reloc_count += 1; | |
9031 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
9032 | } | |
721956f4 AM |
9033 | } |
9034 | ||
eea6121a | 9035 | stub_entry->stub_sec->size += size; |
b34976b6 | 9036 | return TRUE; |
721956f4 AM |
9037 | } |
9038 | ||
9039 | /* Set up various things so that we can make a list of input sections | |
9040 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 9041 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
9042 | |
9043 | int | |
4c52953f AM |
9044 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
9045 | struct bfd_link_info *info, | |
9046 | int no_multi_toc) | |
721956f4 AM |
9047 | { |
9048 | bfd *input_bfd; | |
734b6cf9 | 9049 | int top_id, top_index, id; |
721956f4 | 9050 | asection *section; |
734b6cf9 | 9051 | asection **input_list; |
721956f4 AM |
9052 | bfd_size_type amt; |
9053 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9054 | ||
4c52953f AM |
9055 | htab->no_multi_toc = no_multi_toc; |
9056 | ||
4ce794b7 | 9057 | if (htab->brlt == NULL) |
721956f4 AM |
9058 | return 0; |
9059 | ||
1e2f5b6e | 9060 | /* Find the top input section id. */ |
3d6f9012 | 9061 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
9062 | input_bfd != NULL; |
9063 | input_bfd = input_bfd->link_next) | |
9064 | { | |
721956f4 AM |
9065 | for (section = input_bfd->sections; |
9066 | section != NULL; | |
9067 | section = section->next) | |
9068 | { | |
9069 | if (top_id < section->id) | |
9070 | top_id = section->id; | |
9071 | } | |
9072 | } | |
721956f4 | 9073 | |
8f3bab57 | 9074 | htab->top_id = top_id; |
721956f4 | 9075 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 9076 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
9077 | if (htab->stub_group == NULL) |
9078 | return -1; | |
9079 | ||
3d6f9012 AM |
9080 | /* Set toc_off for com, und, abs and ind sections. */ |
9081 | for (id = 0; id < 3; id++) | |
9082 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 9083 | |
3d6f9012 | 9084 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
9085 | |
9086 | /* We can't use output_bfd->section_count here to find the top output | |
9087 | section index as some sections may have been removed, and | |
8423293d | 9088 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
9089 | for (section = output_bfd->sections, top_index = 0; |
9090 | section != NULL; | |
9091 | section = section->next) | |
9092 | { | |
9093 | if (top_index < section->index) | |
9094 | top_index = section->index; | |
9095 | } | |
9096 | ||
9097 | htab->top_index = top_index; | |
9098 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 9099 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
9100 | htab->input_list = input_list; |
9101 | if (input_list == NULL) | |
9102 | return -1; | |
9103 | ||
721956f4 AM |
9104 | return 1; |
9105 | } | |
9106 | ||
e717da7e AM |
9107 | /* The linker repeatedly calls this function for each TOC input section |
9108 | and linker generated GOT section. Group input bfds such that the toc | |
9109 | within a group is less than 64k in size. Will break with cute linker | |
9110 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
9111 | |
9112 | void | |
4ce794b7 | 9113 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
9114 | { |
9115 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9116 | ||
4c52953f AM |
9117 | if (!htab->no_multi_toc) |
9118 | { | |
9119 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
9120 | bfd_vma off = addr - htab->toc_curr; | |
9121 | ||
9122 | if (off + isec->size > 0x10000) | |
9123 | htab->toc_curr = addr; | |
99877b66 | 9124 | |
4c52953f AM |
9125 | elf_gp (isec->owner) = (htab->toc_curr |
9126 | - elf_gp (isec->output_section->owner) | |
9127 | + TOC_BASE_OFF); | |
9128 | } | |
ad8e1ba5 AM |
9129 | } |
9130 | ||
9131 | /* Called after the last call to the above function. */ | |
9132 | ||
9133 | void | |
4c52953f | 9134 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
9135 | { |
9136 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 9137 | |
4c52953f AM |
9138 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
9139 | ||
ad8e1ba5 AM |
9140 | /* toc_curr tracks the TOC offset used for code sections below in |
9141 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 9142 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
9143 | } |
9144 | ||
9b5ecbd0 AM |
9145 | /* No toc references were found in ISEC. If the code in ISEC makes no |
9146 | calls, then there's no need to use toc adjusting stubs when branching | |
9147 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
9148 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
9149 | needed, and 2 if a cyclical call-graph was found but no other reason | |
9150 | for a stub was detected. If called from the top level, a return of | |
9151 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
9152 | |
9153 | static int | |
4ce794b7 | 9154 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 9155 | { |
4c52953f AM |
9156 | Elf_Internal_Rela *relstart, *rel; |
9157 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 9158 | int ret; |
4c52953f | 9159 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 9160 | |
772119ce AM |
9161 | /* We know none of our code bearing sections will need toc stubs. */ |
9162 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
9163 | return 0; | |
9164 | ||
eea6121a | 9165 | if (isec->size == 0) |
082c50f8 AM |
9166 | return 0; |
9167 | ||
4c52953f AM |
9168 | if (isec->output_section == NULL) |
9169 | return 0; | |
9170 | ||
4c52953f AM |
9171 | if (isec->reloc_count == 0) |
9172 | return 0; | |
9173 | ||
9174 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
9175 | info->keep_memory); | |
9176 | if (relstart == NULL) | |
9177 | return -1; | |
9178 | ||
9179 | /* Look for branches to outside of this section. */ | |
9180 | local_syms = NULL; | |
9181 | ret = 0; | |
9182 | htab = ppc_hash_table (info); | |
9183 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 9184 | { |
4c52953f AM |
9185 | enum elf_ppc64_reloc_type r_type; |
9186 | unsigned long r_symndx; | |
9187 | struct elf_link_hash_entry *h; | |
90aecf7a | 9188 | struct ppc_link_hash_entry *eh; |
4c52953f AM |
9189 | Elf_Internal_Sym *sym; |
9190 | asection *sym_sec; | |
74f0fb50 | 9191 | struct _opd_sec_data *opd; |
4c52953f AM |
9192 | bfd_vma sym_value; |
9193 | bfd_vma dest; | |
9194 | ||
9195 | r_type = ELF64_R_TYPE (rel->r_info); | |
9196 | if (r_type != R_PPC64_REL24 | |
9197 | && r_type != R_PPC64_REL14 | |
9198 | && r_type != R_PPC64_REL14_BRTAKEN | |
9199 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
9200 | continue; | |
9201 | ||
9202 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9203 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
9204 | isec->owner)) | |
9b5ecbd0 | 9205 | { |
4c52953f AM |
9206 | ret = -1; |
9207 | break; | |
9b5ecbd0 | 9208 | } |
9b5ecbd0 | 9209 | |
2917689a | 9210 | /* Calls to dynamic lib functions go through a plt call stub |
90aecf7a AM |
9211 | that uses r2. */ |
9212 | eh = (struct ppc_link_hash_entry *) h; | |
9213 | if (eh != NULL | |
9214 | && (eh->elf.plt.plist != NULL | |
9215 | || (eh->oh != NULL | |
9216 | && eh->oh->elf.plt.plist != NULL))) | |
2917689a | 9217 | { |
90aecf7a AM |
9218 | ret = 1; |
9219 | break; | |
2917689a AM |
9220 | } |
9221 | ||
90aecf7a AM |
9222 | if (sym_sec == NULL) |
9223 | /* Ignore other undefined symbols. */ | |
9224 | continue; | |
9225 | ||
2917689a AM |
9226 | /* Assume branches to other sections not included in the link need |
9227 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
9228 | if (sym_sec->output_section == NULL) |
9229 | { | |
9230 | ret = 1; | |
9231 | break; | |
9232 | } | |
9233 | ||
9234 | if (h == NULL) | |
9235 | sym_value = sym->st_value; | |
9236 | else | |
9237 | { | |
9238 | if (h->root.type != bfd_link_hash_defined | |
9239 | && h->root.type != bfd_link_hash_defweak) | |
9240 | abort (); | |
9241 | sym_value = h->root.u.def.value; | |
9242 | } | |
9243 | sym_value += rel->r_addend; | |
9244 | ||
9245 | /* If this branch reloc uses an opd sym, find the code section. */ | |
74f0fb50 AM |
9246 | opd = get_opd_info (sym_sec); |
9247 | if (opd != NULL) | |
4c52953f | 9248 | { |
74f0fb50 | 9249 | if (h == NULL && opd->adjust != NULL) |
4c52953f AM |
9250 | { |
9251 | long adjust; | |
9252 | ||
74f0fb50 | 9253 | adjust = opd->adjust[sym->st_value / 8]; |
4c52953f AM |
9254 | if (adjust == -1) |
9255 | /* Assume deleted functions won't ever be called. */ | |
9256 | continue; | |
9257 | sym_value += adjust; | |
9258 | } | |
9259 | ||
9260 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
9261 | if (dest == (bfd_vma) -1) | |
9262 | continue; | |
9263 | } | |
9264 | else | |
9265 | dest = (sym_value | |
9266 | + sym_sec->output_offset | |
9267 | + sym_sec->output_section->vma); | |
9268 | ||
9269 | /* Ignore branch to self. */ | |
9270 | if (sym_sec == isec) | |
9271 | continue; | |
9272 | ||
9273 | /* If the called function uses the toc, we need a stub. */ | |
9274 | if (sym_sec->has_toc_reloc | |
9275 | || sym_sec->makes_toc_func_call) | |
9276 | { | |
9277 | ret = 1; | |
9278 | break; | |
9279 | } | |
9280 | ||
9281 | /* Assume any branch that needs a long branch stub might in fact | |
9282 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
9283 | else if (dest - (isec->output_offset | |
9284 | + isec->output_section->vma | |
9285 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
9286 | { |
9287 | ret = 1; | |
9288 | break; | |
9289 | } | |
4c52953f AM |
9290 | |
9291 | /* If calling back to a section in the process of being tested, we | |
9292 | can't say for sure that no toc adjusting stubs are needed, so | |
9293 | don't return zero. */ | |
9294 | else if (sym_sec->call_check_in_progress) | |
9295 | ret = 2; | |
9296 | ||
9297 | /* Branches to another section that itself doesn't have any TOC | |
9298 | references are OK. Recursively call ourselves to check. */ | |
9299 | else if (sym_sec->id <= htab->top_id | |
9300 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
9301 | { | |
9302 | int recur; | |
9303 | ||
9304 | /* Mark current section as indeterminate, so that other | |
9305 | sections that call back to current won't be marked as | |
9306 | known. */ | |
9307 | isec->call_check_in_progress = 1; | |
9308 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
9309 | isec->call_check_in_progress = 0; | |
9310 | ||
9311 | if (recur < 0) | |
9312 | { | |
9313 | /* An error. Exit. */ | |
9314 | ret = -1; | |
9315 | break; | |
9316 | } | |
9317 | else if (recur <= 1) | |
9318 | { | |
9319 | /* Known result. Mark as checked and set section flag. */ | |
9320 | htab->stub_group[sym_sec->id].toc_off = 1; | |
9321 | if (recur != 0) | |
9322 | { | |
9323 | sym_sec->makes_toc_func_call = 1; | |
9324 | ret = 1; | |
9325 | break; | |
9326 | } | |
9327 | } | |
9328 | else | |
9329 | { | |
9330 | /* Unknown result. Continue checking. */ | |
9331 | ret = 2; | |
9332 | } | |
9333 | } | |
9b5ecbd0 AM |
9334 | } |
9335 | ||
4c52953f | 9336 | if (local_syms != NULL |
0ffa91dd | 9337 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
4c52953f AM |
9338 | free (local_syms); |
9339 | if (elf_section_data (isec)->relocs != relstart) | |
9340 | free (relstart); | |
9341 | ||
9b5ecbd0 AM |
9342 | return ret; |
9343 | } | |
9344 | ||
721956f4 AM |
9345 | /* The linker repeatedly calls this function for each input section, |
9346 | in the order that input sections are linked into output sections. | |
9347 | Build lists of input sections to determine groupings between which | |
9348 | we may insert linker stubs. */ | |
9349 | ||
9b5ecbd0 | 9350 | bfd_boolean |
4ce794b7 | 9351 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
9352 | { |
9353 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9354 | ||
734b6cf9 AM |
9355 | if ((isec->output_section->flags & SEC_CODE) != 0 |
9356 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 9357 | { |
734b6cf9 | 9358 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 9359 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 9360 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
9361 | /* This happens to make the list in reverse order, |
9362 | which is what we want. */ | |
734b6cf9 AM |
9363 | PREV_SEC (isec) = *list; |
9364 | *list = isec; | |
721956f4 | 9365 | } |
ad8e1ba5 | 9366 | |
4c52953f | 9367 | if (htab->multi_toc_needed) |
9b5ecbd0 | 9368 | { |
4c52953f AM |
9369 | /* If a code section has a function that uses the TOC then we need |
9370 | to use the right TOC (obviously). Also, make sure that .opd gets | |
9371 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
9372 | can't find their function symbol (shouldn't ever happen now). |
9373 | Also specially treat .fixup for the linux kernel. .fixup | |
9374 | contains branches, but only back to the function that hit an | |
9375 | exception. */ | |
9376 | if (isec->has_toc_reloc | |
9377 | || (isec->flags & SEC_CODE) == 0 | |
9378 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
9379 | { |
9380 | if (elf_gp (isec->owner) != 0) | |
9381 | htab->toc_curr = elf_gp (isec->owner); | |
9382 | } | |
9383 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9384 | { | |
9385 | int ret = toc_adjusting_stub_needed (info, isec); | |
9386 | if (ret < 0) | |
9387 | return FALSE; | |
9388 | else | |
9389 | isec->makes_toc_func_call = ret & 1; | |
9390 | } | |
9b5ecbd0 | 9391 | } |
ad8e1ba5 AM |
9392 | |
9393 | /* Functions that don't use the TOC can belong in any TOC group. | |
9394 | Use the last TOC base. This happens to make _init and _fini | |
9395 | pasting work. */ | |
9396 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9397 | return TRUE; |
721956f4 AM |
9398 | } |
9399 | ||
9400 | /* See whether we can group stub sections together. Grouping stub | |
9401 | sections may result in fewer stubs. More importantly, we need to | |
9402 | put all .init* and .fini* stubs at the beginning of the .init or | |
9403 | .fini output sections respectively, because glibc splits the | |
9404 | _init and _fini functions into multiple parts. Putting a stub in | |
9405 | the middle of a function is not a good idea. */ | |
9406 | ||
9407 | static void | |
4ce794b7 AM |
9408 | group_sections (struct ppc_link_hash_table *htab, |
9409 | bfd_size_type stub_group_size, | |
9410 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9411 | { |
7c8fe5c4 AM |
9412 | asection **list; |
9413 | bfd_size_type stub14_group_size; | |
9414 | bfd_boolean suppress_size_errors; | |
9415 | ||
9416 | suppress_size_errors = FALSE; | |
9417 | stub14_group_size = stub_group_size; | |
9418 | if (stub_group_size == 1) | |
9419 | { | |
9420 | /* Default values. */ | |
9421 | if (stubs_always_before_branch) | |
9422 | { | |
9423 | stub_group_size = 0x1e00000; | |
9424 | stub14_group_size = 0x7800; | |
9425 | } | |
9426 | else | |
9427 | { | |
9428 | stub_group_size = 0x1c00000; | |
9429 | stub14_group_size = 0x7000; | |
9430 | } | |
9431 | suppress_size_errors = TRUE; | |
9432 | } | |
9433 | ||
9434 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9435 | do |
721956f4 | 9436 | { |
734b6cf9 AM |
9437 | asection *tail = *list; |
9438 | while (tail != NULL) | |
721956f4 | 9439 | { |
734b6cf9 AM |
9440 | asection *curr; |
9441 | asection *prev; | |
9442 | bfd_size_type total; | |
9443 | bfd_boolean big_sec; | |
9444 | bfd_vma curr_toc; | |
9445 | ||
9446 | curr = tail; | |
eea6121a | 9447 | total = tail->size; |
7c8fe5c4 AM |
9448 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9449 | ? stub14_group_size : stub_group_size); | |
9450 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9451 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9452 | tail->owner, tail); | |
734b6cf9 AM |
9453 | curr_toc = htab->stub_group[tail->id].toc_off; |
9454 | ||
9455 | while ((prev = PREV_SEC (curr)) != NULL | |
9456 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9457 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9458 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9459 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9460 | curr = prev; |
9461 | ||
9462 | /* OK, the size from the start of CURR to the end is less | |
9463 | than stub_group_size and thus can be handled by one stub | |
9464 | section. (or the tail section is itself larger than | |
9465 | stub_group_size, in which case we may be toast.) We | |
9466 | should really be keeping track of the total size of stubs | |
9467 | added here, as stubs contribute to the final output | |
9468 | section size. That's a little tricky, and this way will | |
9469 | only break if stubs added make the total size more than | |
9470 | 2^25, ie. for the default stub_group_size, if stubs total | |
9471 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9472 | do | |
721956f4 AM |
9473 | { |
9474 | prev = PREV_SEC (tail); | |
734b6cf9 | 9475 | /* Set up this stub group. */ |
721956f4 AM |
9476 | htab->stub_group[tail->id].link_sec = curr; |
9477 | } | |
734b6cf9 AM |
9478 | while (tail != curr && (tail = prev) != NULL); |
9479 | ||
9480 | /* But wait, there's more! Input sections up to stub_group_size | |
9481 | bytes before the stub section can be handled by it too. | |
9482 | Don't do this if we have a really large section after the | |
9483 | stubs, as adding more stubs increases the chance that | |
9484 | branches may not reach into the stub section. */ | |
9485 | if (!stubs_always_before_branch && !big_sec) | |
9486 | { | |
9487 | total = 0; | |
9488 | while (prev != NULL | |
9489 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9490 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9491 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9492 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9493 | { | |
9494 | tail = prev; | |
9495 | prev = PREV_SEC (tail); | |
9496 | htab->stub_group[tail->id].link_sec = curr; | |
9497 | } | |
9498 | } | |
9499 | tail = prev; | |
721956f4 AM |
9500 | } |
9501 | } | |
734b6cf9 AM |
9502 | while (list-- != htab->input_list); |
9503 | free (htab->input_list); | |
721956f4 AM |
9504 | #undef PREV_SEC |
9505 | } | |
9506 | ||
721956f4 AM |
9507 | /* Determine and set the size of the stub section for a final link. |
9508 | ||
9509 | The basic idea here is to examine all the relocations looking for | |
9510 | PC-relative calls to a target that is unreachable with a "bl" | |
9511 | instruction. */ | |
9512 | ||
b34976b6 | 9513 | bfd_boolean |
4ce794b7 | 9514 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9515 | struct bfd_link_info *info, |
9516 | bfd_signed_vma group_size, | |
9517 | asection *(*add_stub_section) (const char *, asection *), | |
9518 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9519 | { |
9520 | bfd_size_type stub_group_size; | |
b34976b6 | 9521 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9522 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9523 | ||
9524 | /* Stash our params away. */ | |
721956f4 AM |
9525 | htab->add_stub_section = add_stub_section; |
9526 | htab->layout_sections_again = layout_sections_again; | |
9527 | stubs_always_before_branch = group_size < 0; | |
9528 | if (group_size < 0) | |
9529 | stub_group_size = -group_size; | |
9530 | else | |
9531 | stub_group_size = group_size; | |
721956f4 AM |
9532 | |
9533 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9534 | ||
721956f4 AM |
9535 | while (1) |
9536 | { | |
9537 | bfd *input_bfd; | |
9538 | unsigned int bfd_indx; | |
9539 | asection *stub_sec; | |
721956f4 AM |
9540 | |
9541 | htab->stub_iteration += 1; | |
721956f4 AM |
9542 | |
9543 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9544 | input_bfd != NULL; | |
9545 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9546 | { | |
9547 | Elf_Internal_Shdr *symtab_hdr; | |
9548 | asection *section; | |
6cdc0ccc | 9549 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9550 | |
0c8d6e5c | 9551 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
9552 | continue; |
9553 | ||
721956f4 | 9554 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 9555 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
9556 | if (symtab_hdr->sh_info == 0) |
9557 | continue; | |
9558 | ||
721956f4 AM |
9559 | /* Walk over each section attached to the input bfd. */ |
9560 | for (section = input_bfd->sections; | |
9561 | section != NULL; | |
9562 | section = section->next) | |
9563 | { | |
721956f4 | 9564 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9565 | |
9566 | /* If there aren't any relocs, then there's nothing more | |
9567 | to do. */ | |
9568 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9569 | || (section->flags & SEC_ALLOC) == 0 |
9570 | || (section->flags & SEC_LOAD) == 0 | |
9571 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9572 | || section->reloc_count == 0) |
9573 | continue; | |
9574 | ||
9575 | /* If this section is a link-once section that will be | |
9576 | discarded, then don't create any stubs. */ | |
9577 | if (section->output_section == NULL | |
9578 | || section->output_section->owner != output_bfd) | |
9579 | continue; | |
9580 | ||
1e2f5b6e AM |
9581 | /* Get the relocs. */ |
9582 | internal_relocs | |
4ce794b7 | 9583 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9584 | info->keep_memory); |
721956f4 | 9585 | if (internal_relocs == NULL) |
1e2f5b6e | 9586 | goto error_ret_free_local; |
721956f4 AM |
9587 | |
9588 | /* Now examine each relocation. */ | |
9589 | irela = internal_relocs; | |
9590 | irelaend = irela + section->reloc_count; | |
9591 | for (; irela < irelaend; irela++) | |
9592 | { | |
4ce794b7 AM |
9593 | enum elf_ppc64_reloc_type r_type; |
9594 | unsigned int r_indx; | |
721956f4 AM |
9595 | enum ppc_stub_type stub_type; |
9596 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9597 | asection *sym_sec, *code_sec; |
721956f4 AM |
9598 | bfd_vma sym_value; |
9599 | bfd_vma destination; | |
8843416a | 9600 | bfd_boolean ok_dest; |
721956f4 | 9601 | struct ppc_link_hash_entry *hash; |
8387904d | 9602 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9603 | struct elf_link_hash_entry *h; |
9604 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9605 | char *stub_name; |
9606 | const asection *id_sec; | |
74f0fb50 | 9607 | struct _opd_sec_data *opd; |
721956f4 AM |
9608 | |
9609 | r_type = ELF64_R_TYPE (irela->r_info); | |
9610 | r_indx = ELF64_R_SYM (irela->r_info); | |
9611 | ||
4ce794b7 | 9612 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9613 | { |
9614 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9615 | goto error_ret_free_internal; |
721956f4 AM |
9616 | } |
9617 | ||
9618 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9619 | if (r_type != R_PPC64_REL24 |
9620 | && r_type != R_PPC64_REL14 | |
9621 | && r_type != R_PPC64_REL14_BRTAKEN | |
9622 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9623 | continue; |
9624 | ||
9625 | /* Now determine the call target, its name, value, | |
9626 | section. */ | |
411e1bfb AM |
9627 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9628 | r_indx, input_bfd)) | |
9629 | goto error_ret_free_internal; | |
9630 | hash = (struct ppc_link_hash_entry *) h; | |
9631 | ||
8843416a | 9632 | ok_dest = FALSE; |
8387904d | 9633 | fdh = NULL; |
7fe2b9a6 | 9634 | sym_value = 0; |
411e1bfb | 9635 | if (hash == NULL) |
721956f4 | 9636 | { |
411e1bfb | 9637 | sym_value = sym->st_value; |
8843416a | 9638 | ok_dest = TRUE; |
721956f4 | 9639 | } |
7fe2b9a6 AM |
9640 | else if (hash->elf.root.type == bfd_link_hash_defined |
9641 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9642 | { | |
9643 | sym_value = hash->elf.root.u.def.value; | |
9644 | if (sym_sec->output_section != NULL) | |
9645 | ok_dest = TRUE; | |
9646 | } | |
9647 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9648 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9649 | { |
99877b66 | 9650 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9651 | use the func descriptor sym instead if it is |
9652 | defined. */ | |
ceb1f1ef | 9653 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9654 | && (fdh = get_fdh (hash, htab)) != NULL) |
9655 | { | |
8387904d AM |
9656 | if (fdh->elf.root.type == bfd_link_hash_defined |
9657 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9658 | { | |
9659 | sym_sec = fdh->elf.root.u.def.section; | |
9660 | sym_value = fdh->elf.root.u.def.value; | |
9661 | if (sym_sec->output_section != NULL) | |
9662 | ok_dest = TRUE; | |
9663 | } | |
99877b66 AM |
9664 | else |
9665 | fdh = NULL; | |
8387904d | 9666 | } |
7fe2b9a6 AM |
9667 | } |
9668 | else | |
9669 | { | |
9670 | bfd_set_error (bfd_error_bad_value); | |
9671 | goto error_ret_free_internal; | |
721956f4 AM |
9672 | } |
9673 | ||
8843416a AM |
9674 | destination = 0; |
9675 | if (ok_dest) | |
9676 | { | |
9677 | sym_value += irela->r_addend; | |
9678 | destination = (sym_value | |
9679 | + sym_sec->output_offset | |
9680 | + sym_sec->output_section->vma); | |
9681 | } | |
9682 | ||
8387904d | 9683 | code_sec = sym_sec; |
74f0fb50 AM |
9684 | opd = get_opd_info (sym_sec); |
9685 | if (opd != NULL) | |
8387904d AM |
9686 | { |
9687 | bfd_vma dest; | |
9688 | ||
74f0fb50 | 9689 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 9690 | { |
74f0fb50 | 9691 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
9692 | if (adjust == -1) |
9693 | continue; | |
9694 | sym_value += adjust; | |
9695 | } | |
9696 | dest = opd_entry_value (sym_sec, sym_value, | |
9697 | &code_sec, &sym_value); | |
9698 | if (dest != (bfd_vma) -1) | |
9699 | { | |
9700 | destination = dest; | |
9701 | if (fdh != NULL) | |
9702 | { | |
9703 | /* Fixup old ABI sym to point at code | |
9704 | entry. */ | |
99877b66 | 9705 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9706 | hash->elf.root.u.def.section = code_sec; |
9707 | hash->elf.root.u.def.value = sym_value; | |
9708 | } | |
9709 | } | |
9710 | } | |
9711 | ||
721956f4 AM |
9712 | /* Determine what (if any) linker stub is needed. */ |
9713 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9714 | destination); | |
ad8e1ba5 AM |
9715 | |
9716 | if (stub_type != ppc_stub_plt_call) | |
9717 | { | |
9718 | /* Check whether we need a TOC adjusting stub. | |
9719 | Since the linker pastes together pieces from | |
9720 | different object files when creating the | |
9721 | _init and _fini functions, it may be that a | |
9722 | call to what looks like a local sym is in | |
9723 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9724 | if (code_sec != NULL |
9725 | && code_sec->output_section != NULL | |
9726 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9727 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9728 | && (code_sec->has_toc_reloc |
9729 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9730 | stub_type = ppc_stub_long_branch_r2off; |
9731 | } | |
9732 | ||
721956f4 AM |
9733 | if (stub_type == ppc_stub_none) |
9734 | continue; | |
9735 | ||
411e1bfb AM |
9736 | /* __tls_get_addr calls might be eliminated. */ |
9737 | if (stub_type != ppc_stub_plt_call | |
9738 | && hash != NULL | |
8387904d AM |
9739 | && (hash == htab->tls_get_addr |
9740 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9741 | && section->has_tls_reloc |
9742 | && irela != internal_relocs) | |
9743 | { | |
9744 | /* Get tls info. */ | |
e7b938ca | 9745 | char *tls_mask; |
411e1bfb | 9746 | |
0d4792f7 | 9747 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9748 | irela - 1, input_bfd)) |
9749 | goto error_ret_free_internal; | |
e7b938ca | 9750 | if (*tls_mask != 0) |
411e1bfb AM |
9751 | continue; |
9752 | } | |
9753 | ||
721956f4 AM |
9754 | /* Support for grouping stub sections. */ |
9755 | id_sec = htab->stub_group[section->id].link_sec; | |
9756 | ||
9757 | /* Get the name of this stub. */ | |
9758 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9759 | if (!stub_name) | |
9760 | goto error_ret_free_internal; | |
9761 | ||
9762 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9763 | stub_name, FALSE, FALSE); |
721956f4 AM |
9764 | if (stub_entry != NULL) |
9765 | { | |
9766 | /* The proper stub has already been created. */ | |
9767 | free (stub_name); | |
9768 | continue; | |
9769 | } | |
9770 | ||
9771 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9772 | if (stub_entry == NULL) | |
9773 | { | |
9774 | free (stub_name); | |
6cdc0ccc AM |
9775 | error_ret_free_internal: |
9776 | if (elf_section_data (section)->relocs == NULL) | |
9777 | free (internal_relocs); | |
9778 | error_ret_free_local: | |
9779 | if (local_syms != NULL | |
9780 | && (symtab_hdr->contents | |
9781 | != (unsigned char *) local_syms)) | |
9782 | free (local_syms); | |
b34976b6 | 9783 | return FALSE; |
721956f4 AM |
9784 | } |
9785 | ||
ad8e1ba5 | 9786 | stub_entry->stub_type = stub_type; |
721956f4 | 9787 | stub_entry->target_value = sym_value; |
8387904d | 9788 | stub_entry->target_section = code_sec; |
721956f4 | 9789 | stub_entry->h = hash; |
411e1bfb | 9790 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9791 | |
9792 | if (stub_entry->h != NULL) | |
9793 | htab->stub_globals += 1; | |
721956f4 AM |
9794 | } |
9795 | ||
9796 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9797 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9798 | free (internal_relocs); |
721956f4 | 9799 | } |
6cdc0ccc AM |
9800 | |
9801 | if (local_syms != NULL | |
9802 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9803 | { | |
9804 | if (!info->keep_memory) | |
9805 | free (local_syms); | |
9806 | else | |
9807 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9808 | } | |
721956f4 AM |
9809 | } |
9810 | ||
5c3dead3 | 9811 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9812 | stub sections. */ |
9813 | for (stub_sec = htab->stub_bfd->sections; | |
9814 | stub_sec != NULL; | |
9815 | stub_sec = stub_sec->next) | |
e717da7e | 9816 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9817 | { |
5c3dead3 | 9818 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9819 | stub_sec->size = 0; |
9820 | stub_sec->reloc_count = 0; | |
84f5d08e | 9821 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9822 | } |
eea6121a AM |
9823 | |
9824 | htab->brlt->size = 0; | |
84f5d08e AM |
9825 | htab->brlt->reloc_count = 0; |
9826 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9827 | if (htab->relbrlt != NULL) |
eea6121a | 9828 | htab->relbrlt->size = 0; |
721956f4 | 9829 | |
63bc6f6c | 9830 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9831 | |
176a0d42 AM |
9832 | if (info->emitrelocations |
9833 | && htab->glink != NULL && htab->glink->size != 0) | |
9834 | { | |
9835 | htab->glink->reloc_count = 1; | |
9836 | htab->glink->flags |= SEC_RELOC; | |
9837 | } | |
9838 | ||
5c3dead3 AM |
9839 | for (stub_sec = htab->stub_bfd->sections; |
9840 | stub_sec != NULL; | |
9841 | stub_sec = stub_sec->next) | |
9842 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9843 | && stub_sec->rawsize != stub_sec->size) | |
9844 | break; | |
9845 | ||
9846 | /* Exit from this loop when no stubs have been added, and no stubs | |
9847 | have changed size. */ | |
9848 | if (stub_sec == NULL) | |
9849 | break; | |
9850 | ||
721956f4 AM |
9851 | /* Ask the linker to do its stuff. */ |
9852 | (*htab->layout_sections_again) (); | |
9853 | } | |
9854 | ||
c456f082 | 9855 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9856 | section is empty, but it's too late. If we strip sections here, |
9857 | the dynamic symbol table is corrupted since the section symbol | |
9858 | for the stripped section isn't written. */ | |
721956f4 | 9859 | |
b34976b6 | 9860 | return TRUE; |
721956f4 AM |
9861 | } |
9862 | ||
9863 | /* Called after we have determined section placement. If sections | |
805fc799 | 9864 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9865 | |
805fc799 | 9866 | bfd_vma |
4ce794b7 | 9867 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9868 | { |
805fc799 AM |
9869 | asection *s; |
9870 | bfd_vma TOCstart; | |
721956f4 | 9871 | |
805fc799 AM |
9872 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9873 | order. The TOC starts where the first of these sections starts. */ | |
9874 | s = bfd_get_section_by_name (obfd, ".got"); | |
9875 | if (s == NULL) | |
9876 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9877 | if (s == NULL) | |
9878 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9879 | if (s == NULL) | |
9880 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9881 | if (s == NULL) | |
9882 | { | |
9883 | /* This may happen for | |
9884 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9885 | .toc directive | |
9886 | o bad linker script | |
9887 | o --gc-sections and empty TOC sections | |
9888 | ||
9889 | FIXME: Warn user? */ | |
9890 | ||
9891 | /* Look for a likely section. We probably won't even be | |
9892 | using TOCstart. */ | |
9893 | for (s = obfd->sections; s != NULL; s = s->next) | |
9894 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9895 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9896 | break; | |
721956f4 | 9897 | if (s == NULL) |
805fc799 AM |
9898 | for (s = obfd->sections; s != NULL; s = s->next) |
9899 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9900 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9901 | break; | |
721956f4 | 9902 | if (s == NULL) |
805fc799 AM |
9903 | for (s = obfd->sections; s != NULL; s = s->next) |
9904 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9905 | break; | |
721956f4 | 9906 | if (s == NULL) |
805fc799 AM |
9907 | for (s = obfd->sections; s != NULL; s = s->next) |
9908 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9909 | break; | |
9910 | } | |
721956f4 | 9911 | |
805fc799 AM |
9912 | TOCstart = 0; |
9913 | if (s != NULL) | |
9914 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9915 | |
805fc799 | 9916 | return TOCstart; |
721956f4 AM |
9917 | } |
9918 | ||
9919 | /* Build all the stubs associated with the current output file. | |
9920 | The stubs are kept in a hash table attached to the main linker | |
9921 | hash table. This function is called via gldelf64ppc_finish. */ | |
9922 | ||
b34976b6 | 9923 | bfd_boolean |
4ce794b7 AM |
9924 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9925 | struct bfd_link_info *info, | |
9926 | char **stats) | |
5d1634d7 AM |
9927 | { |
9928 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9929 | asection *stub_sec; |
5d1634d7 | 9930 | bfd_byte *p; |
e717da7e | 9931 | int stub_sec_count = 0; |
5d1634d7 | 9932 | |
ad8e1ba5 | 9933 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9934 | |
9935 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9936 | for (stub_sec = htab->stub_bfd->sections; |
9937 | stub_sec != NULL; | |
9938 | stub_sec = stub_sec->next) | |
eea6121a AM |
9939 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9940 | && stub_sec->size != 0) | |
e717da7e | 9941 | { |
eea6121a AM |
9942 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9943 | if (stub_sec->contents == NULL) | |
9944 | return FALSE; | |
9945 | /* We want to check that built size is the same as calculated | |
9946 | size. rawsize is a convenient location to use. */ | |
9947 | stub_sec->rawsize = stub_sec->size; | |
9948 | stub_sec->size = 0; | |
e717da7e | 9949 | } |
5d1634d7 | 9950 | |
23eb7e01 | 9951 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9952 | { |
9f951329 | 9953 | unsigned int indx; |
ad8e1ba5 | 9954 | bfd_vma plt0; |
9f951329 | 9955 | |
721956f4 | 9956 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9957 | if (htab->emit_stub_syms) |
9958 | { | |
9959 | struct elf_link_hash_entry *h; | |
468392fb AM |
9960 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
9961 | TRUE, FALSE, FALSE); | |
97b639ba AM |
9962 | if (h == NULL) |
9963 | return FALSE; | |
9964 | if (h->root.type == bfd_link_hash_new) | |
9965 | { | |
9966 | h->root.type = bfd_link_hash_defined; | |
9967 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9968 | h->root.u.def.value = 8; |
f5385ebf AM |
9969 | h->ref_regular = 1; |
9970 | h->def_regular = 1; | |
9971 | h->ref_regular_nonweak = 1; | |
9972 | h->forced_local = 1; | |
9973 | h->non_elf = 0; | |
97b639ba AM |
9974 | } |
9975 | } | |
176a0d42 AM |
9976 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
9977 | if (info->emitrelocations) | |
9978 | { | |
9979 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
9980 | if (r == NULL) | |
9981 | return FALSE; | |
9982 | r->r_offset = (htab->glink->output_offset | |
9983 | + htab->glink->output_section->vma); | |
9984 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
9985 | r->r_addend = plt0; | |
9986 | } | |
4ce794b7 | 9987 | p = htab->glink->contents; |
176a0d42 | 9988 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
9989 | bfd_put_64 (htab->glink->owner, plt0, p); |
9990 | p += 8; | |
9991 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9992 | p += 4; |
ee4bf8d2 | 9993 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9994 | p += 4; |
ee4bf8d2 | 9995 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9996 | p += 4; |
ee4bf8d2 | 9997 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9998 | p += 4; |
ee4bf8d2 | 9999 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 10000 | p += 4; |
ee4bf8d2 | 10001 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 10002 | p += 4; |
ee4bf8d2 | 10003 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 10004 | p += 4; |
4ce794b7 | 10005 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 10006 | p += 4; |
4ce794b7 | 10007 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 10008 | p += 4; |
4ce794b7 | 10009 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 10010 | p += 4; |
4ce794b7 | 10011 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 10012 | p += 4; |
ee4bf8d2 AM |
10013 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
10014 | { | |
10015 | bfd_put_32 (htab->glink->owner, NOP, p); | |
10016 | p += 4; | |
10017 | } | |
ad8e1ba5 | 10018 | |
9f951329 AM |
10019 | /* Build the .glink lazy link call stubs. */ |
10020 | indx = 0; | |
eea6121a | 10021 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
10022 | { |
10023 | if (indx < 0x8000) | |
10024 | { | |
4ce794b7 | 10025 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
10026 | p += 4; |
10027 | } | |
10028 | else | |
10029 | { | |
4ce794b7 | 10030 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 10031 | p += 4; |
4ce794b7 | 10032 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
10033 | p += 4; |
10034 | } | |
4ce794b7 | 10035 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 10036 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 10037 | indx++; |
9f951329 AM |
10038 | p += 4; |
10039 | } | |
eea6121a | 10040 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 10041 | } |
5d1634d7 | 10042 | |
eea6121a | 10043 | if (htab->brlt->size != 0) |
721956f4 | 10044 | { |
4ce794b7 | 10045 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 10046 | htab->brlt->size); |
4ce794b7 | 10047 | if (htab->brlt->contents == NULL) |
b34976b6 | 10048 | return FALSE; |
721956f4 | 10049 | } |
ee75fd95 | 10050 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
10051 | { |
10052 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 10053 | htab->relbrlt->size); |
63bc6f6c AM |
10054 | if (htab->relbrlt->contents == NULL) |
10055 | return FALSE; | |
10056 | } | |
5d1634d7 | 10057 | |
721956f4 AM |
10058 | /* Build the stubs as directed by the stub hash table. */ |
10059 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 10060 | |
aa8a7074 AM |
10061 | if (htab->relbrlt != NULL) |
10062 | htab->relbrlt->reloc_count = 0; | |
10063 | ||
721956f4 AM |
10064 | for (stub_sec = htab->stub_bfd->sections; |
10065 | stub_sec != NULL; | |
10066 | stub_sec = stub_sec->next) | |
e717da7e AM |
10067 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
10068 | { | |
10069 | stub_sec_count += 1; | |
eea6121a | 10070 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
10071 | break; |
10072 | } | |
5d1634d7 | 10073 | |
721956f4 | 10074 | if (stub_sec != NULL |
eea6121a | 10075 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 10076 | { |
b34976b6 | 10077 | htab->stub_error = TRUE; |
721956f4 | 10078 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 10079 | } |
721956f4 | 10080 | |
d2a300cf AM |
10081 | if (htab->stub_error) |
10082 | return FALSE; | |
10083 | ||
10084 | if (stats != NULL) | |
10085 | { | |
10086 | *stats = bfd_malloc (500); | |
10087 | if (*stats == NULL) | |
10088 | return FALSE; | |
10089 | ||
ee75fd95 | 10090 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
10091 | " branch %lu\n" |
10092 | " toc adjust %lu\n" | |
10093 | " long branch %lu\n" | |
10094 | " long toc adj %lu\n" | |
10095 | " plt call %lu"), | |
e717da7e | 10096 | stub_sec_count, |
ee75fd95 | 10097 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
10098 | htab->stub_count[ppc_stub_long_branch - 1], |
10099 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
10100 | htab->stub_count[ppc_stub_plt_branch - 1], | |
10101 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
10102 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
10103 | } |
10104 | return TRUE; | |
5bd4f169 AM |
10105 | } |
10106 | ||
99877b66 AM |
10107 | /* This function undoes the changes made by add_symbol_adjust. */ |
10108 | ||
10109 | static bfd_boolean | |
10110 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10111 | { | |
10112 | struct ppc_link_hash_entry *eh; | |
10113 | ||
10114 | if (h->root.type == bfd_link_hash_indirect) | |
10115 | return TRUE; | |
10116 | ||
10117 | if (h->root.type == bfd_link_hash_warning) | |
10118 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
10119 | ||
10120 | eh = (struct ppc_link_hash_entry *) h; | |
10121 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
10122 | return TRUE; | |
10123 | ||
10124 | eh->elf.root.type = bfd_link_hash_undefined; | |
10125 | return TRUE; | |
10126 | } | |
10127 | ||
10128 | void | |
10129 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
10130 | { | |
10131 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10132 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
10133 | } | |
10134 | ||
60124e18 AM |
10135 | /* What to do when ld finds relocations against symbols defined in |
10136 | discarded sections. */ | |
10137 | ||
10138 | static unsigned int | |
10139 | ppc64_elf_action_discarded (asection *sec) | |
10140 | { | |
10141 | if (strcmp (".opd", sec->name) == 0) | |
10142 | return 0; | |
10143 | ||
10144 | if (strcmp (".toc", sec->name) == 0) | |
10145 | return 0; | |
10146 | ||
bce50a28 JJ |
10147 | if (strcmp (".toc1", sec->name) == 0) |
10148 | return 0; | |
10149 | ||
60124e18 AM |
10150 | return _bfd_elf_default_action_discarded (sec); |
10151 | } | |
10152 | ||
5bd4f169 AM |
10153 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
10154 | to handle the relocations for a section. | |
10155 | ||
10156 | The relocs are always passed as Rela structures; if the section | |
10157 | actually uses Rel structures, the r_addend field will always be | |
10158 | zero. | |
10159 | ||
10160 | This function is responsible for adjust the section contents as | |
10161 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 10162 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
10163 | necessary. |
10164 | ||
10165 | This function does not have to worry about setting the reloc | |
10166 | address or the reloc symbol index. | |
10167 | ||
10168 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
10169 | ||
10170 | LOCAL_SECTIONS is an array giving the section in the input file | |
10171 | corresponding to the st_shndx field of each local symbol. | |
10172 | ||
10173 | The global hash table entry for the global symbols can be found | |
10174 | via elf_sym_hashes (input_bfd). | |
10175 | ||
1049f94e | 10176 | When generating relocatable output, this function must handle |
5bd4f169 AM |
10177 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
10178 | going to be the section symbol corresponding to the output | |
10179 | section, which means that the addend must be adjusted | |
10180 | accordingly. */ | |
10181 | ||
b34976b6 | 10182 | static bfd_boolean |
4ce794b7 AM |
10183 | ppc64_elf_relocate_section (bfd *output_bfd, |
10184 | struct bfd_link_info *info, | |
10185 | bfd *input_bfd, | |
10186 | asection *input_section, | |
10187 | bfd_byte *contents, | |
10188 | Elf_Internal_Rela *relocs, | |
10189 | Elf_Internal_Sym *local_syms, | |
10190 | asection **local_sections) | |
5bd4f169 | 10191 | { |
65f38f15 | 10192 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
10193 | Elf_Internal_Shdr *symtab_hdr; |
10194 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
10195 | Elf_Internal_Rela *rel; |
10196 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
10197 | Elf_Internal_Rela outrel; |
10198 | bfd_byte *loc; | |
411e1bfb | 10199 | struct got_entry **local_got_ents; |
5bd4f169 | 10200 | bfd_vma TOCstart; |
b34976b6 AM |
10201 | bfd_boolean ret = TRUE; |
10202 | bfd_boolean is_opd; | |
96e0dda4 | 10203 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 10204 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 10205 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 10206 | |
65f38f15 | 10207 | /* Initialize howto table if needed. */ |
5bd4f169 | 10208 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
10209 | ppc_howto_init (); |
10210 | ||
65f38f15 | 10211 | htab = ppc_hash_table (info); |
ee75fd95 AM |
10212 | |
10213 | /* Don't relocate stub sections. */ | |
10214 | if (input_section->owner == htab->stub_bfd) | |
10215 | return TRUE; | |
10216 | ||
0c8d6e5c | 10217 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 10218 | |
411e1bfb | 10219 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 10220 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 10221 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 10222 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 10223 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 10224 | |
5bd4f169 AM |
10225 | rel = relocs; |
10226 | relend = relocs + input_section->reloc_count; | |
10227 | for (; rel < relend; rel++) | |
10228 | { | |
04c9666a | 10229 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 10230 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
10231 | bfd_reloc_status_type r; |
10232 | Elf_Internal_Sym *sym; | |
10233 | asection *sec; | |
039b3fef AM |
10234 | struct elf_link_hash_entry *h_elf; |
10235 | struct ppc_link_hash_entry *h; | |
10236 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 10237 | const char *sym_name; |
0d4792f7 | 10238 | unsigned long r_symndx, toc_symndx; |
951fd09b | 10239 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 10240 | char sym_type; |
5bd4f169 | 10241 | bfd_vma relocation; |
b34976b6 AM |
10242 | bfd_boolean unresolved_reloc; |
10243 | bfd_boolean warned; | |
50bc7936 | 10244 | unsigned long insn, mask; |
721956f4 AM |
10245 | struct ppc_stub_hash_entry *stub_entry; |
10246 | bfd_vma max_br_offset; | |
10247 | bfd_vma from; | |
5bd4f169 | 10248 | |
4ce794b7 | 10249 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 10250 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
10251 | |
10252 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
10253 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
10254 | proper TOC base to use. */ | |
10255 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
10256 | && rel != relocs | |
10257 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
10258 | && is_opd) | |
10259 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
10260 | ||
4ce794b7 AM |
10261 | sym = NULL; |
10262 | sec = NULL; | |
039b3fef | 10263 | h_elf = NULL; |
4ce794b7 | 10264 | sym_name = NULL; |
b34976b6 AM |
10265 | unresolved_reloc = FALSE; |
10266 | warned = FALSE; | |
4cc603a5 | 10267 | orig_addend = rel->r_addend; |
65f38f15 | 10268 | |
0b13192e | 10269 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
10270 | { |
10271 | /* It's a local symbol. */ | |
74f0fb50 | 10272 | struct _opd_sec_data *opd; |
4025353c | 10273 | |
5bd4f169 AM |
10274 | sym = local_syms + r_symndx; |
10275 | sec = local_sections[r_symndx]; | |
26c61ae5 | 10276 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 10277 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 10278 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
10279 | opd = get_opd_info (sec); |
10280 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 10281 | { |
74f0fb50 | 10282 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
10283 | if (adjust == -1) |
10284 | relocation = 0; | |
10285 | else | |
4cc603a5 AM |
10286 | { |
10287 | /* If this is a relocation against the opd section sym | |
10288 | and we have edited .opd, adjust the reloc addend so | |
10289 | that ld -r and ld --emit-relocs output is correct. | |
10290 | If it is a reloc against some other .opd symbol, | |
10291 | then the symbol value will be adjusted later. */ | |
10292 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
10293 | rel->r_addend += adjust; | |
10294 | else | |
10295 | relocation += adjust; | |
10296 | } | |
1e2f5b6e | 10297 | } |
5bd4f169 AM |
10298 | } |
10299 | else | |
10300 | { | |
b2a8e766 AM |
10301 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
10302 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 10303 | h_elf, sec, relocation, |
b2a8e766 | 10304 | unresolved_reloc, warned); |
039b3fef AM |
10305 | sym_name = h_elf->root.root.string; |
10306 | sym_type = h_elf->type; | |
5bd4f169 | 10307 | } |
039b3fef | 10308 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 10309 | |
ab96bf03 AM |
10310 | if (sec != NULL && elf_discarded_section (sec)) |
10311 | { | |
10312 | /* For relocs against symbols from removed linkonce sections, | |
10313 | or sections discarded by a linker script, we just want the | |
10314 | section contents zeroed. Avoid any special processing. */ | |
10315 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10316 | contents + rel->r_offset); | |
10317 | rel->r_info = 0; | |
10318 | rel->r_addend = 0; | |
10319 | continue; | |
10320 | } | |
10321 | ||
10322 | if (info->relocatable) | |
10323 | continue; | |
10324 | ||
951fd09b AM |
10325 | /* TLS optimizations. Replace instruction sequences and relocs |
10326 | based on information we collected in tls_optimize. We edit | |
10327 | RELOCS so that --emit-relocs will output something sensible | |
10328 | for the final instruction stream. */ | |
10329 | tls_mask = 0; | |
10330 | tls_gd = 0; | |
0d4792f7 | 10331 | toc_symndx = 0; |
d881513a | 10332 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
10333 | { |
10334 | if (h != NULL) | |
039b3fef | 10335 | tls_mask = h->tls_mask; |
411e1bfb AM |
10336 | else if (local_got_ents != NULL) |
10337 | { | |
e7b938ca AM |
10338 | char *lgot_masks; |
10339 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
10340 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 10341 | } |
0d4792f7 AM |
10342 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
10343 | { | |
10344 | /* Check for toc tls entries. */ | |
10345 | char *toc_tls; | |
10346 | ||
10347 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
10348 | rel, input_bfd)) | |
10349 | return FALSE; | |
10350 | ||
10351 | if (toc_tls) | |
10352 | tls_mask = *toc_tls; | |
10353 | } | |
10354 | } | |
10355 | ||
10356 | /* Check that tls relocs are used with tls syms, and non-tls | |
10357 | relocs are used with non-tls syms. */ | |
10358 | if (r_symndx != 0 | |
10359 | && r_type != R_PPC64_NONE | |
10360 | && (h == NULL | |
039b3fef AM |
10361 | || h->elf.root.type == bfd_link_hash_defined |
10362 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
10363 | && (IS_PPC64_TLS_RELOC (r_type) |
10364 | != (sym_type == STT_TLS | |
10365 | || (sym_type == STT_SECTION | |
10366 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 AM |
10367 | { |
10368 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
10369 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
10370 | ; | |
10371 | else | |
10372 | (*_bfd_error_handler) | |
1d483afe | 10373 | (!IS_PPC64_TLS_RELOC (r_type) |
d003868e AM |
10374 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
10375 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
10376 | input_bfd, | |
10377 | input_section, | |
0d4792f7 AM |
10378 | (long) rel->r_offset, |
10379 | ppc64_elf_howto_table[r_type]->name, | |
10380 | sym_name); | |
411e1bfb AM |
10381 | } |
10382 | ||
10383 | /* Ensure reloc mapping code below stays sane. */ | |
10384 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
10385 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
10386 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
10387 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
10388 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
10389 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
10390 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
10391 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
10392 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
10393 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
10394 | abort (); | |
0d4792f7 | 10395 | |
411e1bfb AM |
10396 | switch (r_type) |
10397 | { | |
10398 | default: | |
411e1bfb AM |
10399 | break; |
10400 | ||
10401 | case R_PPC64_TOC16: | |
10402 | case R_PPC64_TOC16_LO: | |
10403 | case R_PPC64_TOC16_DS: | |
10404 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
10405 | { |
10406 | /* Check for toc tls entries. */ | |
10407 | char *toc_tls; | |
951fd09b | 10408 | int retval; |
411e1bfb | 10409 | |
0d4792f7 AM |
10410 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
10411 | rel, input_bfd); | |
951fd09b | 10412 | if (retval == 0) |
411e1bfb AM |
10413 | return FALSE; |
10414 | ||
10415 | if (toc_tls) | |
10416 | { | |
951fd09b | 10417 | tls_mask = *toc_tls; |
411e1bfb AM |
10418 | if (r_type == R_PPC64_TOC16_DS |
10419 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10420 | { |
10421 | if (tls_mask != 0 | |
10422 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10423 | goto toctprel; | |
10424 | } | |
411e1bfb | 10425 | else |
951fd09b AM |
10426 | { |
10427 | /* If we found a GD reloc pair, then we might be | |
10428 | doing a GD->IE transition. */ | |
10429 | if (retval == 2) | |
10430 | { | |
10431 | tls_gd = TLS_TPRELGD; | |
10432 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10433 | goto tls_ldgd_opt; |
951fd09b AM |
10434 | } |
10435 | else if (retval == 3) | |
10436 | { | |
10437 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 10438 | goto tls_ldgd_opt; |
951fd09b AM |
10439 | } |
10440 | } | |
411e1bfb AM |
10441 | } |
10442 | } | |
10443 | break; | |
10444 | ||
10445 | case R_PPC64_GOT_TPREL16_DS: | |
10446 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10447 | if (tls_mask != 0 |
10448 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10449 | { |
81407a69 | 10450 | toctprel: |
4fe5ca5b | 10451 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10452 | insn &= 31 << 21; |
10453 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10454 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10455 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10456 | if (toc_symndx != 0) |
10457 | { | |
10458 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10459 | /* We changed the symbol. Start over in order to | |
10460 | get h, sym, sec etc. right. */ | |
10461 | rel--; | |
10462 | continue; | |
10463 | } | |
10464 | else | |
10465 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10466 | } |
10467 | break; | |
10468 | ||
10469 | case R_PPC64_TLS: | |
951fd09b AM |
10470 | if (tls_mask != 0 |
10471 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10472 | { |
50bc7936 | 10473 | bfd_vma rtra; |
411e1bfb | 10474 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10475 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10476 | == ((31 << 26) | (13 << 11))) |
10477 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10478 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10479 | == ((31 << 26) | (13 << 16))) |
10480 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10481 | else | |
10482 | abort (); | |
10483 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10484 | /* add -> addi. */ | |
10485 | insn = 14 << 26; | |
10486 | else if ((insn & (31 << 1)) == 23 << 1 | |
10487 | && ((insn & (31 << 6)) < 14 << 6 | |
10488 | || ((insn & (31 << 6)) >= 16 << 6 | |
10489 | && (insn & (31 << 6)) < 24 << 6))) | |
10490 | /* load and store indexed -> dform. */ | |
10491 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10492 | else if ((insn & (31 << 1)) == 21 << 1 | |
10493 | && (insn & (0x1a << 6)) == 0) | |
10494 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10495 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10496 | | ((insn >> 6) & 1)); | |
10497 | else if ((insn & (31 << 1)) == 21 << 1 | |
10498 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10499 | /* lwax -> lwa. */ | |
10500 | insn = (58 << 26) | 2; | |
10501 | else | |
10502 | abort (); | |
10503 | insn |= rtra; | |
10504 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10505 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10506 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10507 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10508 | r_type = R_PPC64_TPREL16_LO; |
10509 | if (toc_symndx != 0) | |
10510 | { | |
10511 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10512 | /* We changed the symbol. Start over in order to | |
10513 | get h, sym, sec etc. right. */ | |
10514 | rel--; | |
10515 | continue; | |
10516 | } | |
10517 | else | |
10518 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10519 | } |
10520 | break; | |
10521 | ||
411e1bfb AM |
10522 | case R_PPC64_GOT_TLSGD16_HI: |
10523 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10524 | tls_gd = TLS_TPRELGD; |
10525 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10526 | goto tls_gdld_hi; | |
10527 | break; | |
10528 | ||
411e1bfb AM |
10529 | case R_PPC64_GOT_TLSLD16_HI: |
10530 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10531 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10532 | { |
951fd09b AM |
10533 | tls_gdld_hi: |
10534 | if ((tls_mask & tls_gd) != 0) | |
10535 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10536 | + R_PPC64_GOT_TPREL16_DS); | |
10537 | else | |
411e1bfb | 10538 | { |
951fd09b | 10539 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10540 | rel->r_offset -= d_offset; |
951fd09b | 10541 | r_type = R_PPC64_NONE; |
411e1bfb | 10542 | } |
951fd09b | 10543 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10544 | } |
10545 | break; | |
10546 | ||
951fd09b AM |
10547 | case R_PPC64_GOT_TLSGD16: |
10548 | case R_PPC64_GOT_TLSGD16_LO: | |
10549 | tls_gd = TLS_TPRELGD; | |
10550 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 10551 | goto tls_ldgd_opt; |
951fd09b | 10552 | break; |
411e1bfb | 10553 | |
951fd09b AM |
10554 | case R_PPC64_GOT_TLSLD16: |
10555 | case R_PPC64_GOT_TLSLD16_LO: | |
10556 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10557 | { | |
102890f0 AM |
10558 | bfd_vma insn1, insn2, insn3; |
10559 | bfd_vma offset; | |
10560 | ||
10561 | tls_ldgd_opt: | |
10562 | /* We know that the next reloc is on a tls_get_addr | |
10563 | call, since ppc64_elf_tls_optimize checks this. */ | |
10564 | offset = rel[1].r_offset; | |
10565 | insn1 = bfd_get_32 (output_bfd, | |
10566 | contents + rel->r_offset - d_offset); | |
10567 | insn3 = bfd_get_32 (output_bfd, | |
10568 | contents + offset + 4); | |
10569 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10570 | { |
102890f0 AM |
10571 | /* IE */ |
10572 | insn1 &= (1 << 26) - (1 << 2); | |
10573 | insn1 |= 58 << 26; /* ld */ | |
10574 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10575 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
10576 | R_PPC64_NONE); | |
10577 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10578 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10579 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 10580 | else |
102890f0 AM |
10581 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
10582 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10583 | } | |
10584 | else | |
10585 | { | |
10586 | /* LE */ | |
10587 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10588 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10589 | if (tls_gd == 0) | |
951fd09b | 10590 | { |
102890f0 | 10591 | /* Was an LD reloc. */ |
1d483afe AM |
10592 | if (toc_symndx) |
10593 | sec = local_sections[toc_symndx]; | |
10594 | for (r_symndx = 0; | |
10595 | r_symndx < symtab_hdr->sh_info; | |
10596 | r_symndx++) | |
10597 | if (local_sections[r_symndx] == sec) | |
10598 | break; | |
10599 | if (r_symndx >= symtab_hdr->sh_info) | |
10600 | r_symndx = 0; | |
102890f0 | 10601 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
1d483afe AM |
10602 | if (r_symndx != 0) |
10603 | rel->r_addend -= (local_syms[r_symndx].st_value | |
10604 | + sec->output_offset | |
10605 | + sec->output_section->vma); | |
10606 | rel[1].r_addend = rel->r_addend; | |
951fd09b | 10607 | } |
102890f0 AM |
10608 | else if (toc_symndx != 0) |
10609 | r_symndx = toc_symndx; | |
10610 | r_type = R_PPC64_TPREL16_HA; | |
10611 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10612 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10613 | R_PPC64_TPREL16_LO); | |
10614 | rel[1].r_offset += d_offset; | |
10615 | } | |
10616 | if (insn3 == NOP | |
10617 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10618 | { | |
10619 | insn3 = insn2; | |
10620 | insn2 = NOP; | |
10621 | rel[1].r_offset += 4; | |
10622 | } | |
10623 | bfd_put_32 (output_bfd, insn1, | |
10624 | contents + rel->r_offset - d_offset); | |
10625 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
10626 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
10627 | if (tls_gd == 0 || toc_symndx != 0) | |
10628 | { | |
10629 | /* We changed the symbol. Start over in order | |
10630 | to get h, sym, sec etc. right. */ | |
10631 | rel--; | |
10632 | continue; | |
411e1bfb | 10633 | } |
411e1bfb | 10634 | } |
411e1bfb AM |
10635 | break; |
10636 | ||
10637 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10638 | if (rel + 1 < relend |
10639 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10640 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10641 | { |
951fd09b AM |
10642 | if ((tls_mask & TLS_GD) == 0) |
10643 | { | |
10644 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10645 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10646 | r_type = R_PPC64_TPREL64; | |
10647 | else | |
10648 | { | |
4ce794b7 | 10649 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10650 | r_type = R_PPC64_NONE; |
10651 | } | |
10652 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10653 | } | |
10654 | } | |
10655 | else | |
10656 | { | |
10657 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10658 | { |
4ce794b7 | 10659 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10660 | r_type = R_PPC64_NONE; |
951fd09b | 10661 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10662 | } |
411e1bfb AM |
10663 | } |
10664 | break; | |
10665 | ||
10666 | case R_PPC64_TPREL64: | |
951fd09b | 10667 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10668 | { |
10669 | r_type = R_PPC64_NONE; | |
10670 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10671 | } | |
10672 | break; | |
10673 | } | |
10674 | ||
10675 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10676 | insn = 0; |
b25116a9 AM |
10677 | max_br_offset = 1 << 25; |
10678 | addend = rel->r_addend; | |
65f38f15 | 10679 | switch (r_type) |
5bd4f169 AM |
10680 | { |
10681 | default: | |
65f38f15 | 10682 | break; |
5bd4f169 | 10683 | |
65f38f15 AM |
10684 | /* Branch taken prediction relocations. */ |
10685 | case R_PPC64_ADDR14_BRTAKEN: | |
10686 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10687 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10688 | /* Fall thru. */ | |
65f38f15 | 10689 | |
86c76c7b | 10690 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10691 | case R_PPC64_ADDR14_BRNTAKEN: |
10692 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10693 | insn |= bfd_get_32 (output_bfd, |
10694 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10695 | /* Fall thru. */ |
86c76c7b | 10696 | |
b25116a9 AM |
10697 | case R_PPC64_REL14: |
10698 | max_br_offset = 1 << 15; | |
10699 | /* Fall thru. */ | |
5bd4f169 | 10700 | |
65f38f15 | 10701 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10702 | /* Calls to functions with a different TOC, such as calls to |
10703 | shared objects, need to alter the TOC pointer. This is | |
10704 | done using a linkage stub. A REL24 branching to these | |
10705 | linkage stubs needs to be followed by a nop, as the nop | |
10706 | will be replaced with an instruction to restore the TOC | |
10707 | base pointer. */ | |
b25116a9 | 10708 | stub_entry = NULL; |
8387904d | 10709 | fdh = h; |
ad8e1ba5 | 10710 | if (((h != NULL |
039b3fef AM |
10711 | && (((fdh = h->oh) != NULL |
10712 | && fdh->elf.plt.plist != NULL) | |
10713 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10714 | || (sec != NULL |
ad8e1ba5 | 10715 | && sec->output_section != NULL |
b25116a9 | 10716 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10717 | && (htab->stub_group[sec->id].toc_off |
10718 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10719 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10720 | rel, htab)) != NULL |
10721 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10722 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10723 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10724 | { |
b25116a9 | 10725 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10726 | |
eea6121a | 10727 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10728 | { |
b25116a9 AM |
10729 | unsigned long nop; |
10730 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10731 | if (nop == NOP | |
10732 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10733 | { |
4ce794b7 | 10734 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10735 | contents + rel->r_offset + 4); |
b25116a9 | 10736 | can_plt_call = TRUE; |
41bd81ab | 10737 | } |
5bd4f169 | 10738 | } |
721956f4 AM |
10739 | |
10740 | if (!can_plt_call) | |
10741 | { | |
ad8e1ba5 AM |
10742 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10743 | { | |
10744 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10745 | and link, don't require a nop. However, don't |
10746 | allow tail calls in a shared library as they | |
10747 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10748 | unsigned long br; |
10749 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10750 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10751 | can_plt_call = TRUE; |
15b552e9 AM |
10752 | else |
10753 | stub_entry = NULL; | |
ad8e1ba5 | 10754 | } |
6ab189d5 | 10755 | else if (h != NULL |
039b3fef | 10756 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10757 | ".__libc_start_main") == 0) |
10758 | { | |
10759 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10760 | can_plt_call = TRUE; |
6ab189d5 | 10761 | } |
ad8e1ba5 AM |
10762 | else |
10763 | { | |
10764 | if (strcmp (input_section->output_section->name, | |
10765 | ".init") == 0 | |
10766 | || strcmp (input_section->output_section->name, | |
10767 | ".fini") == 0) | |
10768 | (*_bfd_error_handler) | |
d003868e | 10769 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10770 | "not supported using your crt files; " |
10771 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10772 | input_bfd, |
10773 | input_section, | |
ad8e1ba5 AM |
10774 | (long) rel->r_offset); |
10775 | else | |
10776 | (*_bfd_error_handler) | |
d003868e | 10777 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10778 | "does not allow automatic multiple TOCs; " |
10779 | "recompile with -mminimal-toc or " | |
10780 | "-fno-optimize-sibling-calls, " | |
10781 | "or make `%s' extern"), | |
d003868e AM |
10782 | input_bfd, |
10783 | input_section, | |
ad8e1ba5 AM |
10784 | (long) rel->r_offset, |
10785 | sym_name, | |
10786 | sym_name); | |
10787 | bfd_set_error (bfd_error_bad_value); | |
10788 | ret = FALSE; | |
10789 | } | |
721956f4 AM |
10790 | } |
10791 | ||
b25116a9 AM |
10792 | if (can_plt_call |
10793 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10794 | unresolved_reloc = FALSE; | |
10795 | } | |
10796 | ||
8387904d AM |
10797 | if (stub_entry == NULL |
10798 | && get_opd_info (sec) != NULL) | |
10799 | { | |
10800 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10801 | bfd_vma off = (relocation + addend |
10802 | - sec->output_section->vma | |
10803 | - sec->output_offset); | |
8387904d AM |
10804 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10805 | if (dest != (bfd_vma) -1) | |
10806 | { | |
10807 | relocation = dest; | |
10808 | addend = 0; | |
10809 | } | |
10810 | } | |
10811 | ||
b25116a9 AM |
10812 | /* If the branch is out of reach we ought to have a long |
10813 | branch stub. */ | |
10814 | from = (rel->r_offset | |
10815 | + input_section->output_offset | |
10816 | + input_section->output_section->vma); | |
10817 | ||
10818 | if (stub_entry == NULL | |
4cc603a5 | 10819 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10820 | >= 2 * max_br_offset) |
10821 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10822 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10823 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10824 | htab); | |
b25116a9 AM |
10825 | |
10826 | if (stub_entry != NULL) | |
10827 | { | |
10828 | /* Munge up the value and addend so that we call the stub | |
10829 | rather than the procedure directly. */ | |
10830 | relocation = (stub_entry->stub_offset | |
10831 | + stub_entry->stub_sec->output_offset | |
10832 | + stub_entry->stub_sec->output_section->vma); | |
10833 | addend = 0; | |
10834 | } | |
10835 | ||
10836 | if (insn != 0) | |
10837 | { | |
10838 | if (is_power4) | |
721956f4 | 10839 | { |
b25116a9 AM |
10840 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10841 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10842 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10843 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10844 | insn |= 0x02 << 21; | |
10845 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10846 | insn |= 0x08 << 21; | |
10847 | else | |
10848 | break; | |
10849 | } | |
10850 | else | |
10851 | { | |
10852 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10853 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10854 | insn ^= 0x01 << 21; |
721956f4 | 10855 | } |
b25116a9 AM |
10856 | |
10857 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10858 | } |
e86ce104 | 10859 | |
06da1e8e AM |
10860 | /* NOP out calls to undefined weak functions. |
10861 | We can thus call a weak function without first | |
10862 | checking whether the function is defined. */ | |
b25116a9 | 10863 | else if (h != NULL |
039b3fef | 10864 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10865 | && r_type == R_PPC64_REL24 |
10866 | && relocation == 0 | |
4cc603a5 | 10867 | && addend == 0) |
e86ce104 | 10868 | { |
06da1e8e AM |
10869 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10870 | continue; | |
e86ce104 | 10871 | } |
65f38f15 AM |
10872 | break; |
10873 | } | |
5bd4f169 | 10874 | |
65f38f15 | 10875 | /* Set `addend'. */ |
411e1bfb | 10876 | tls_type = 0; |
65f38f15 AM |
10877 | switch (r_type) |
10878 | { | |
10879 | default: | |
10880 | (*_bfd_error_handler) | |
d003868e AM |
10881 | (_("%B: unknown relocation type %d for symbol %s"), |
10882 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10883 | |
65f38f15 | 10884 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10885 | ret = FALSE; |
65f38f15 | 10886 | continue; |
5bd4f169 | 10887 | |
65f38f15 | 10888 | case R_PPC64_NONE: |
411e1bfb | 10889 | case R_PPC64_TLS: |
04c9666a AM |
10890 | case R_PPC64_GNU_VTINHERIT: |
10891 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10892 | continue; |
5bd4f169 AM |
10893 | |
10894 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10895 | address in the GOT as relocation value instead of the | |
411e1bfb | 10896 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10897 | symbol and put the symbol value there. */ |
411e1bfb AM |
10898 | case R_PPC64_GOT_TLSGD16: |
10899 | case R_PPC64_GOT_TLSGD16_LO: | |
10900 | case R_PPC64_GOT_TLSGD16_HI: | |
10901 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10902 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10903 | goto dogot; |
10904 | ||
10905 | case R_PPC64_GOT_TLSLD16: | |
10906 | case R_PPC64_GOT_TLSLD16_LO: | |
10907 | case R_PPC64_GOT_TLSLD16_HI: | |
10908 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10909 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10910 | goto dogot; |
10911 | ||
10912 | case R_PPC64_GOT_TPREL16_DS: | |
10913 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10914 | case R_PPC64_GOT_TPREL16_HI: | |
10915 | case R_PPC64_GOT_TPREL16_HA: | |
10916 | tls_type = TLS_TLS | TLS_TPREL; | |
10917 | goto dogot; | |
10918 | ||
10919 | case R_PPC64_GOT_DTPREL16_DS: | |
10920 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10921 | case R_PPC64_GOT_DTPREL16_HI: | |
10922 | case R_PPC64_GOT_DTPREL16_HA: | |
10923 | tls_type = TLS_TLS | TLS_DTPREL; | |
10924 | goto dogot; | |
10925 | ||
65f38f15 AM |
10926 | case R_PPC64_GOT16: |
10927 | case R_PPC64_GOT16_LO: | |
10928 | case R_PPC64_GOT16_HI: | |
10929 | case R_PPC64_GOT16_HA: | |
10930 | case R_PPC64_GOT16_DS: | |
10931 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10932 | dogot: |
5bd4f169 AM |
10933 | { |
10934 | /* Relocation is to the entry for this symbol in the global | |
10935 | offset table. */ | |
e717da7e | 10936 | asection *got; |
d881513a | 10937 | bfd_vma *offp; |
5bd4f169 | 10938 | bfd_vma off; |
d881513a | 10939 | unsigned long indx = 0; |
65f38f15 | 10940 | |
d881513a AM |
10941 | if (tls_type == (TLS_TLS | TLS_LD) |
10942 | && (h == NULL | |
f5385ebf | 10943 | || !h->elf.def_dynamic)) |
e717da7e | 10944 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10945 | else |
5bd4f169 | 10946 | { |
d881513a | 10947 | struct got_entry *ent; |
5bd4f169 | 10948 | |
d881513a AM |
10949 | if (h != NULL) |
10950 | { | |
10951 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10952 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10953 | &h->elf) | |
d881513a | 10954 | || (info->shared |
039b3fef | 10955 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10956 | /* This is actually a static link, or it is a |
10957 | -Bsymbolic link and the symbol is defined | |
10958 | locally, or the symbol was forced to be local | |
10959 | because of a version file. */ | |
10960 | ; | |
10961 | else | |
10962 | { | |
039b3fef | 10963 | indx = h->elf.dynindx; |
d881513a AM |
10964 | unresolved_reloc = FALSE; |
10965 | } | |
039b3fef | 10966 | ent = h->elf.got.glist; |
d881513a | 10967 | } |
411e1bfb | 10968 | else |
5bd4f169 | 10969 | { |
d881513a AM |
10970 | if (local_got_ents == NULL) |
10971 | abort (); | |
10972 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10973 | } |
d881513a AM |
10974 | |
10975 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10976 | if (ent->addend == orig_addend |
e717da7e | 10977 | && ent->owner == input_bfd |
d881513a AM |
10978 | && ent->tls_type == tls_type) |
10979 | break; | |
10980 | if (ent == NULL) | |
10981 | abort (); | |
10982 | offp = &ent->got.offset; | |
5bd4f169 | 10983 | } |
411e1bfb | 10984 | |
e717da7e AM |
10985 | got = ppc64_elf_tdata (input_bfd)->got; |
10986 | if (got == NULL) | |
10987 | abort (); | |
10988 | ||
411e1bfb AM |
10989 | /* The offset must always be a multiple of 8. We use the |
10990 | least significant bit to record whether we have already | |
10991 | processed this entry. */ | |
d881513a | 10992 | off = *offp; |
411e1bfb AM |
10993 | if ((off & 1) != 0) |
10994 | off &= ~1; | |
5bd4f169 AM |
10995 | else |
10996 | { | |
411e1bfb AM |
10997 | /* Generate relocs for the dynamic linker, except in |
10998 | the case of TLSLD where we'll use one entry per | |
10999 | module. */ | |
e717da7e AM |
11000 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
11001 | ||
d881513a | 11002 | *offp = off | 1; |
4e795f50 AM |
11003 | if ((info->shared || indx != 0) |
11004 | && (h == NULL | |
039b3fef AM |
11005 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11006 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 11007 | { |
e717da7e AM |
11008 | outrel.r_offset = (got->output_section->vma |
11009 | + got->output_offset | |
411e1bfb | 11010 | + off); |
4cc603a5 | 11011 | outrel.r_addend = addend; |
d881513a | 11012 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 11013 | { |
411e1bfb | 11014 | outrel.r_addend = 0; |
e515b051 | 11015 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
11016 | if (tls_type == (TLS_TLS | TLS_GD)) |
11017 | { | |
e717da7e AM |
11018 | loc = relgot->contents; |
11019 | loc += (relgot->reloc_count++ | |
d881513a AM |
11020 | * sizeof (Elf64_External_Rela)); |
11021 | bfd_elf64_swap_reloca_out (output_bfd, | |
11022 | &outrel, loc); | |
e515b051 | 11023 | outrel.r_offset += 8; |
4cc603a5 | 11024 | outrel.r_addend = addend; |
d881513a AM |
11025 | outrel.r_info |
11026 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 11027 | } |
411e1bfb | 11028 | } |
951fd09b | 11029 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 11030 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 11031 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
11032 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
11033 | else if (indx == 0) | |
81407a69 AM |
11034 | { |
11035 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
11036 | ||
11037 | /* Write the .got section contents for the sake | |
11038 | of prelink. */ | |
e717da7e | 11039 | loc = got->contents + off; |
23fbd6fa JJ |
11040 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
11041 | loc); | |
81407a69 | 11042 | } |
411e1bfb AM |
11043 | else |
11044 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
11045 | |
11046 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
11047 | { |
11048 | outrel.r_addend += relocation; | |
11049 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 11050 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 11051 | } |
e717da7e AM |
11052 | loc = relgot->contents; |
11053 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
11054 | * sizeof (Elf64_External_Rela)); |
11055 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
11056 | } | |
11057 | ||
ad8e1ba5 | 11058 | /* Init the .got section contents here if we're not |
81407a69 | 11059 | emitting a reloc. */ |
d881513a | 11060 | else |
411e1bfb | 11061 | { |
4cc603a5 | 11062 | relocation += addend; |
7b609f53 AM |
11063 | if (tls_type == (TLS_TLS | TLS_LD)) |
11064 | relocation = 1; | |
11065 | else if (tls_type != 0) | |
411e1bfb | 11066 | { |
e1918d23 | 11067 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 11068 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 11069 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 11070 | |
7b609f53 AM |
11071 | if (tls_type == (TLS_TLS | TLS_GD)) |
11072 | { | |
11073 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 11074 | got->contents + off + 8); |
7b609f53 AM |
11075 | relocation = 1; |
11076 | } | |
411e1bfb | 11077 | } |
7b609f53 | 11078 | |
411e1bfb | 11079 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 11080 | got->contents + off); |
5bd4f169 AM |
11081 | } |
11082 | } | |
11083 | ||
65f38f15 AM |
11084 | if (off >= (bfd_vma) -2) |
11085 | abort (); | |
11086 | ||
e717da7e | 11087 | relocation = got->output_offset + off; |
65f38f15 | 11088 | |
5bd4f169 | 11089 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 11090 | addend = -TOC_BASE_OFF; |
5bd4f169 | 11091 | } |
65f38f15 AM |
11092 | break; |
11093 | ||
11094 | case R_PPC64_PLT16_HA: | |
11095 | case R_PPC64_PLT16_HI: | |
11096 | case R_PPC64_PLT16_LO: | |
11097 | case R_PPC64_PLT32: | |
11098 | case R_PPC64_PLT64: | |
11099 | /* Relocation is to the entry for this symbol in the | |
11100 | procedure linkage table. */ | |
11101 | ||
11102 | /* Resolve a PLT reloc against a local symbol directly, | |
11103 | without using the procedure linkage table. */ | |
11104 | if (h == NULL) | |
11105 | break; | |
11106 | ||
411e1bfb AM |
11107 | /* It's possible that we didn't make a PLT entry for this |
11108 | symbol. This happens when statically linking PIC code, | |
11109 | or when using -Bsymbolic. Go find a match if there is a | |
11110 | PLT entry. */ | |
4ce794b7 | 11111 | if (htab->plt != NULL) |
65f38f15 | 11112 | { |
411e1bfb | 11113 | struct plt_entry *ent; |
039b3fef | 11114 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 11115 | if (ent->addend == orig_addend |
411e1bfb AM |
11116 | && ent->plt.offset != (bfd_vma) -1) |
11117 | { | |
4ce794b7 AM |
11118 | relocation = (htab->plt->output_section->vma |
11119 | + htab->plt->output_offset | |
411e1bfb AM |
11120 | + ent->plt.offset); |
11121 | unresolved_reloc = FALSE; | |
11122 | } | |
65f38f15 | 11123 | } |
65f38f15 | 11124 | break; |
5bd4f169 | 11125 | |
0b13192e AM |
11126 | case R_PPC64_TOC: |
11127 | /* Relocation value is TOC base. */ | |
11128 | relocation = TOCstart; | |
11129 | if (r_symndx == 0) | |
11130 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
11131 | else if (unresolved_reloc) |
11132 | ; | |
11133 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
11134 | relocation += htab->stub_group[sec->id].toc_off; |
11135 | else | |
11136 | unresolved_reloc = TRUE; | |
ab96bf03 | 11137 | goto dodyn; |
0b13192e | 11138 | |
5bd4f169 AM |
11139 | /* TOC16 relocs. We want the offset relative to the TOC base, |
11140 | which is the address of the start of the TOC plus 0x8000. | |
11141 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
11142 | in this order. */ | |
65f38f15 AM |
11143 | case R_PPC64_TOC16: |
11144 | case R_PPC64_TOC16_LO: | |
11145 | case R_PPC64_TOC16_HI: | |
11146 | case R_PPC64_TOC16_DS: | |
11147 | case R_PPC64_TOC16_LO_DS: | |
11148 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 11149 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
11150 | break; |
11151 | ||
11152 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
11153 | case R_PPC64_SECTOFF: |
11154 | case R_PPC64_SECTOFF_LO: | |
11155 | case R_PPC64_SECTOFF_HI: | |
11156 | case R_PPC64_SECTOFF_DS: | |
11157 | case R_PPC64_SECTOFF_LO_DS: | |
11158 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 11159 | if (sec != NULL) |
65f38f15 | 11160 | addend -= sec->output_section->vma; |
5bd4f169 AM |
11161 | break; |
11162 | ||
721956f4 AM |
11163 | case R_PPC64_REL14: |
11164 | case R_PPC64_REL14_BRNTAKEN: | |
11165 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
11166 | case R_PPC64_REL24: |
11167 | break; | |
11168 | ||
411e1bfb AM |
11169 | case R_PPC64_TPREL16: |
11170 | case R_PPC64_TPREL16_LO: | |
11171 | case R_PPC64_TPREL16_HI: | |
11172 | case R_PPC64_TPREL16_HA: | |
11173 | case R_PPC64_TPREL16_DS: | |
11174 | case R_PPC64_TPREL16_LO_DS: | |
11175 | case R_PPC64_TPREL16_HIGHER: | |
11176 | case R_PPC64_TPREL16_HIGHERA: | |
11177 | case R_PPC64_TPREL16_HIGHEST: | |
11178 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 11179 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11180 | if (info->shared) |
11181 | /* The TPREL16 relocs shouldn't really be used in shared | |
11182 | libs as they will result in DT_TEXTREL being set, but | |
11183 | support them anyway. */ | |
11184 | goto dodyn; | |
11185 | break; | |
11186 | ||
11187 | case R_PPC64_DTPREL16: | |
11188 | case R_PPC64_DTPREL16_LO: | |
11189 | case R_PPC64_DTPREL16_HI: | |
11190 | case R_PPC64_DTPREL16_HA: | |
11191 | case R_PPC64_DTPREL16_DS: | |
11192 | case R_PPC64_DTPREL16_LO_DS: | |
11193 | case R_PPC64_DTPREL16_HIGHER: | |
11194 | case R_PPC64_DTPREL16_HIGHERA: | |
11195 | case R_PPC64_DTPREL16_HIGHEST: | |
11196 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 11197 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11198 | break; |
11199 | ||
e515b051 AM |
11200 | case R_PPC64_DTPMOD64: |
11201 | relocation = 1; | |
11202 | addend = 0; | |
11203 | goto dodyn; | |
11204 | ||
411e1bfb | 11205 | case R_PPC64_TPREL64: |
e1918d23 | 11206 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
11207 | goto dodyn; |
11208 | ||
11209 | case R_PPC64_DTPREL64: | |
e1918d23 | 11210 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
11211 | /* Fall thru */ |
11212 | ||
65f38f15 AM |
11213 | /* Relocations that may need to be propagated if this is a |
11214 | dynamic object. */ | |
04c9666a | 11215 | case R_PPC64_REL30: |
65f38f15 AM |
11216 | case R_PPC64_REL32: |
11217 | case R_PPC64_REL64: | |
11218 | case R_PPC64_ADDR14: | |
11219 | case R_PPC64_ADDR14_BRNTAKEN: | |
11220 | case R_PPC64_ADDR14_BRTAKEN: | |
11221 | case R_PPC64_ADDR16: | |
11222 | case R_PPC64_ADDR16_DS: | |
11223 | case R_PPC64_ADDR16_HA: | |
11224 | case R_PPC64_ADDR16_HI: | |
11225 | case R_PPC64_ADDR16_HIGHER: | |
11226 | case R_PPC64_ADDR16_HIGHERA: | |
11227 | case R_PPC64_ADDR16_HIGHEST: | |
11228 | case R_PPC64_ADDR16_HIGHESTA: | |
11229 | case R_PPC64_ADDR16_LO: | |
11230 | case R_PPC64_ADDR16_LO_DS: | |
11231 | case R_PPC64_ADDR24: | |
65f38f15 AM |
11232 | case R_PPC64_ADDR32: |
11233 | case R_PPC64_ADDR64: | |
11234 | case R_PPC64_UADDR16: | |
11235 | case R_PPC64_UADDR32: | |
11236 | case R_PPC64_UADDR64: | |
411e1bfb | 11237 | dodyn: |
5d1634d7 | 11238 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
11239 | break; |
11240 | ||
41bd81ab AM |
11241 | if (NO_OPD_RELOCS && is_opd) |
11242 | break; | |
11243 | ||
65f38f15 | 11244 | if ((info->shared |
4e795f50 | 11245 | && (h == NULL |
039b3fef AM |
11246 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
11247 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 11248 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 11249 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
11250 | || (ELIMINATE_COPY_RELOCS |
11251 | && !info->shared | |
65f38f15 | 11252 | && h != NULL |
039b3fef | 11253 | && h->elf.dynindx != -1 |
f5385ebf | 11254 | && !h->elf.non_got_ref |
f5385ebf | 11255 | && !h->elf.def_regular)) |
65f38f15 AM |
11256 | { |
11257 | Elf_Internal_Rela outrel; | |
b34976b6 | 11258 | bfd_boolean skip, relocate; |
65f38f15 | 11259 | asection *sreloc; |
947216bf | 11260 | bfd_byte *loc; |
1cf1f670 | 11261 | bfd_vma out_off; |
65f38f15 AM |
11262 | |
11263 | /* When generating a dynamic object, these relocations | |
11264 | are copied into the output file to be resolved at run | |
11265 | time. */ | |
11266 | ||
b34976b6 AM |
11267 | skip = FALSE; |
11268 | relocate = FALSE; | |
65f38f15 | 11269 | |
1cf1f670 AM |
11270 | out_off = _bfd_elf_section_offset (output_bfd, info, |
11271 | input_section, rel->r_offset); | |
11272 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 11273 | skip = TRUE; |
1cf1f670 | 11274 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 11275 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
11276 | out_off += (input_section->output_section->vma |
11277 | + input_section->output_offset); | |
11278 | outrel.r_offset = out_off; | |
411e1bfb | 11279 | outrel.r_addend = rel->r_addend; |
65f38f15 | 11280 | |
1cf1f670 AM |
11281 | /* Optimize unaligned reloc use. */ |
11282 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
11283 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
11284 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
11285 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
11286 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
11287 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
11288 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
11289 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
11290 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
11291 | ||
65f38f15 | 11292 | if (skip) |
0bb2d96a | 11293 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 11294 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
11295 | && !is_opd |
11296 | && r_type != R_PPC64_TOC) | |
039b3fef | 11297 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
11298 | else |
11299 | { | |
41bd81ab AM |
11300 | /* This symbol is local, or marked to become local, |
11301 | or this is an opd section reloc which must point | |
11302 | at a local function. */ | |
65f38f15 | 11303 | outrel.r_addend += relocation; |
e86ce104 | 11304 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 11305 | { |
3fad3c7c | 11306 | if (is_opd && h != NULL) |
afbe61cf AM |
11307 | { |
11308 | /* Lie about opd entries. This case occurs | |
11309 | when building shared libraries and we | |
11310 | reference a function in another shared | |
3fad3c7c AM |
11311 | lib. The same thing happens for a weak |
11312 | definition in an application that's | |
11313 | overridden by a strong definition in a | |
11314 | shared lib. (I believe this is a generic | |
11315 | bug in binutils handling of weak syms.) | |
11316 | In these cases we won't use the opd | |
1e2f5b6e | 11317 | entry in this lib. */ |
b34976b6 | 11318 | unresolved_reloc = FALSE; |
afbe61cf | 11319 | } |
65f38f15 | 11320 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
11321 | |
11322 | /* We need to relocate .opd contents for ld.so. | |
11323 | Prelink also wants simple and consistent rules | |
11324 | for relocs. This make all RELATIVE relocs have | |
11325 | *r_offset equal to r_addend. */ | |
11326 | relocate = TRUE; | |
65f38f15 AM |
11327 | } |
11328 | else | |
11329 | { | |
11330 | long indx = 0; | |
11331 | ||
1d483afe | 11332 | if (r_symndx == 0 || bfd_is_abs_section (sec)) |
65f38f15 AM |
11333 | ; |
11334 | else if (sec == NULL || sec->owner == NULL) | |
11335 | { | |
11336 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 11337 | return FALSE; |
65f38f15 AM |
11338 | } |
11339 | else | |
11340 | { | |
11341 | asection *osec; | |
11342 | ||
11343 | osec = sec->output_section; | |
11344 | indx = elf_section_data (osec)->dynindx; | |
11345 | ||
74541ad4 AM |
11346 | if (indx == 0) |
11347 | { | |
11348 | if ((osec->flags & SEC_READONLY) == 0 | |
11349 | && htab->elf.data_index_section != NULL) | |
11350 | osec = htab->elf.data_index_section; | |
11351 | else | |
11352 | osec = htab->elf.text_index_section; | |
11353 | indx = elf_section_data (osec)->dynindx; | |
11354 | } | |
11355 | BFD_ASSERT (indx != 0); | |
11356 | ||
65f38f15 AM |
11357 | /* We are turning this relocation into one |
11358 | against a section symbol, so subtract out | |
11359 | the output section's address but not the | |
11360 | offset of the input section in the output | |
11361 | section. */ | |
11362 | outrel.r_addend -= osec->vma; | |
11363 | } | |
11364 | ||
11365 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
11366 | } | |
11367 | } | |
11368 | ||
11369 | sreloc = elf_section_data (input_section)->sreloc; | |
11370 | if (sreloc == NULL) | |
11371 | abort (); | |
11372 | ||
dfbb6ac9 AM |
11373 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
11374 | >= sreloc->size) | |
11375 | abort (); | |
947216bf AM |
11376 | loc = sreloc->contents; |
11377 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
11378 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
11379 | ||
11380 | /* If this reloc is against an external symbol, it will | |
11381 | be computed at runtime, so there's no need to do | |
81407a69 AM |
11382 | anything now. However, for the sake of prelink ensure |
11383 | that the section contents are a known value. */ | |
65f38f15 | 11384 | if (! relocate) |
81407a69 AM |
11385 | { |
11386 | unresolved_reloc = FALSE; | |
11387 | /* The value chosen here is quite arbitrary as ld.so | |
11388 | ignores section contents except for the special | |
11389 | case of .opd where the contents might be accessed | |
11390 | before relocation. Choose zero, as that won't | |
11391 | cause reloc overflow. */ | |
11392 | relocation = 0; | |
11393 | addend = 0; | |
11394 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11395 | to improve backward compatibility with older | |
11396 | versions of ld. */ | |
11397 | if (r_type == R_PPC64_ADDR64) | |
11398 | addend = outrel.r_addend; | |
11399 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11400 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11401 | addend = (input_section->output_section->vma |
11402 | + input_section->output_offset | |
11403 | + rel->r_offset); | |
81407a69 | 11404 | } |
65f38f15 | 11405 | } |
5bd4f169 AM |
11406 | break; |
11407 | ||
65f38f15 AM |
11408 | case R_PPC64_COPY: |
11409 | case R_PPC64_GLOB_DAT: | |
11410 | case R_PPC64_JMP_SLOT: | |
11411 | case R_PPC64_RELATIVE: | |
11412 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11413 | files. */ | |
ae9a127f | 11414 | /* Fall through. */ |
65f38f15 AM |
11415 | |
11416 | case R_PPC64_PLTGOT16: | |
11417 | case R_PPC64_PLTGOT16_DS: | |
11418 | case R_PPC64_PLTGOT16_HA: | |
11419 | case R_PPC64_PLTGOT16_HI: | |
11420 | case R_PPC64_PLTGOT16_LO: | |
11421 | case R_PPC64_PLTGOT16_LO_DS: | |
11422 | case R_PPC64_PLTREL32: | |
11423 | case R_PPC64_PLTREL64: | |
11424 | /* These ones haven't been implemented yet. */ | |
11425 | ||
11426 | (*_bfd_error_handler) | |
d003868e AM |
11427 | (_("%B: relocation %s is not supported for symbol %s."), |
11428 | input_bfd, | |
4ce794b7 | 11429 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11430 | |
11431 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11432 | ret = FALSE; |
5bd4f169 | 11433 | continue; |
65f38f15 | 11434 | } |
5bd4f169 | 11435 | |
65f38f15 AM |
11436 | /* Do any further special processing. */ |
11437 | switch (r_type) | |
11438 | { | |
11439 | default: | |
11440 | break; | |
11441 | ||
11442 | case R_PPC64_ADDR16_HA: | |
11443 | case R_PPC64_ADDR16_HIGHERA: | |
11444 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11445 | case R_PPC64_TOC16_HA: |
11446 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11447 | case R_PPC64_TPREL16_HA: |
11448 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11449 | case R_PPC64_TPREL16_HIGHER: |
11450 | case R_PPC64_TPREL16_HIGHERA: | |
11451 | case R_PPC64_TPREL16_HIGHEST: | |
11452 | case R_PPC64_TPREL16_HIGHESTA: | |
11453 | case R_PPC64_DTPREL16_HIGHER: | |
11454 | case R_PPC64_DTPREL16_HIGHERA: | |
11455 | case R_PPC64_DTPREL16_HIGHEST: | |
11456 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11457 | /* It's just possible that this symbol is a weak symbol |
11458 | that's not actually defined anywhere. In that case, | |
11459 | 'sec' would be NULL, and we should leave the symbol | |
11460 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11461 | if (sec == NULL) |
11462 | break; | |
11463 | /* Fall thru */ | |
11464 | ||
11465 | case R_PPC64_GOT16_HA: | |
11466 | case R_PPC64_PLTGOT16_HA: | |
11467 | case R_PPC64_PLT16_HA: | |
11468 | case R_PPC64_GOT_TLSGD16_HA: | |
11469 | case R_PPC64_GOT_TLSLD16_HA: | |
11470 | case R_PPC64_GOT_TPREL16_HA: | |
11471 | case R_PPC64_GOT_DTPREL16_HA: | |
11472 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11473 | Bits 0:15 are not used. */ | |
11474 | addend += 0x8000; | |
65f38f15 AM |
11475 | break; |
11476 | ||
11477 | case R_PPC64_ADDR16_DS: | |
11478 | case R_PPC64_ADDR16_LO_DS: | |
11479 | case R_PPC64_GOT16_DS: | |
11480 | case R_PPC64_GOT16_LO_DS: | |
11481 | case R_PPC64_PLT16_LO_DS: | |
11482 | case R_PPC64_SECTOFF_DS: | |
11483 | case R_PPC64_SECTOFF_LO_DS: | |
11484 | case R_PPC64_TOC16_DS: | |
11485 | case R_PPC64_TOC16_LO_DS: | |
11486 | case R_PPC64_PLTGOT16_DS: | |
11487 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11488 | case R_PPC64_GOT_TPREL16_DS: |
11489 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11490 | case R_PPC64_GOT_DTPREL16_DS: | |
11491 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11492 | case R_PPC64_TPREL16_DS: | |
11493 | case R_PPC64_TPREL16_LO_DS: | |
11494 | case R_PPC64_DTPREL16_DS: | |
11495 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11496 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11497 | mask = 3; | |
11498 | /* If this reloc is against an lq insn, then the value must be | |
11499 | a multiple of 16. This is somewhat of a hack, but the | |
11500 | "correct" way to do this by defining _DQ forms of all the | |
11501 | _DS relocs bloats all reloc switches in this file. It | |
11502 | doesn't seem to make much sense to use any of these relocs | |
11503 | in data, so testing the insn should be safe. */ | |
494dac0c | 11504 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11505 | mask = 15; |
11506 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11507 | { |
11508 | (*_bfd_error_handler) | |
d003868e AM |
11509 | (_("%B: error: relocation %s not a multiple of %d"), |
11510 | input_bfd, | |
4ce794b7 | 11511 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11512 | mask + 1); |
65f38f15 | 11513 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11514 | ret = FALSE; |
65f38f15 AM |
11515 | continue; |
11516 | } | |
11517 | break; | |
5bd4f169 AM |
11518 | } |
11519 | ||
239e1f3a AM |
11520 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11521 | because such sections are not SEC_ALLOC and thus ld.so will | |
11522 | not process them. */ | |
65f38f15 | 11523 | if (unresolved_reloc |
239e1f3a | 11524 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11525 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11526 | { |
11527 | (*_bfd_error_handler) | |
d003868e AM |
11528 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11529 | input_bfd, | |
11530 | input_section, | |
9c07fe7c | 11531 | (long) rel->r_offset, |
7b609f53 | 11532 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11533 | h->elf.root.root.string); |
b34976b6 | 11534 | ret = FALSE; |
9c07fe7c | 11535 | } |
5bd4f169 | 11536 | |
65f38f15 | 11537 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11538 | input_bfd, |
11539 | input_section, | |
11540 | contents, | |
411e1bfb | 11541 | rel->r_offset, |
5bd4f169 AM |
11542 | relocation, |
11543 | addend); | |
11544 | ||
ef60b7ff | 11545 | if (r != bfd_reloc_ok) |
5bd4f169 | 11546 | { |
cd27b276 AM |
11547 | if (sym_name == NULL) |
11548 | sym_name = "(null)"; | |
11549 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11550 | { |
cd27b276 AM |
11551 | if (warned) |
11552 | continue; | |
11553 | if (h != NULL | |
039b3fef | 11554 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11555 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11556 | { |
11557 | /* Assume this is a call protected by other code that | |
11558 | detects the symbol is undefined. If this is the case, | |
11559 | we can safely ignore the overflow. If not, the | |
11560 | program is hosed anyway, and a little warning isn't | |
11561 | going to help. */ | |
11562 | ||
11563 | continue; | |
11564 | } | |
11565 | ||
ef60b7ff | 11566 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11567 | (info, (h ? &h->elf.root : NULL), sym_name, |
11568 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11569 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11570 | return FALSE; |
ef60b7ff AM |
11571 | } |
11572 | else | |
11573 | { | |
11574 | (*_bfd_error_handler) | |
d003868e AM |
11575 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11576 | input_bfd, | |
11577 | input_section, | |
7b609f53 | 11578 | (long) rel->r_offset, |
4ce794b7 | 11579 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11580 | sym_name, |
11581 | (int) r); | |
b34976b6 | 11582 | ret = FALSE; |
ef60b7ff | 11583 | } |
5bd4f169 | 11584 | } |
5bd4f169 AM |
11585 | } |
11586 | ||
645ea6a9 AM |
11587 | /* If we're emitting relocations, then shortly after this function |
11588 | returns, reloc offsets and addends for this section will be | |
11589 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11590 | file rather than the input. Save a copy of the relocs for |
11591 | opd_entry_value. */ | |
4cc603a5 | 11592 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11593 | { |
11594 | bfd_size_type amt; | |
11595 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11596 | rel = bfd_alloc (input_bfd, amt); | |
11597 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11598 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11599 | if (rel == NULL) | |
11600 | return FALSE; | |
11601 | memcpy (rel, relocs, amt); | |
11602 | } | |
5bd4f169 AM |
11603 | return ret; |
11604 | } | |
11605 | ||
754021d0 AM |
11606 | /* Adjust the value of any local symbols in opd sections. */ |
11607 | ||
11608 | static bfd_boolean | |
11609 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11610 | const char *name ATTRIBUTE_UNUSED, | |
11611 | Elf_Internal_Sym *elfsym, | |
11612 | asection *input_sec, | |
11613 | struct elf_link_hash_entry *h) | |
11614 | { | |
74f0fb50 AM |
11615 | struct _opd_sec_data *opd; |
11616 | long adjust; | |
754021d0 AM |
11617 | bfd_vma value; |
11618 | ||
4025353c AM |
11619 | if (h != NULL) |
11620 | return TRUE; | |
11621 | ||
74f0fb50 AM |
11622 | opd = get_opd_info (input_sec); |
11623 | if (opd == NULL || opd->adjust == NULL) | |
754021d0 AM |
11624 | return TRUE; |
11625 | ||
11626 | value = elfsym->st_value - input_sec->output_offset; | |
11627 | if (!info->relocatable) | |
11628 | value -= input_sec->output_section->vma; | |
11629 | ||
74f0fb50 | 11630 | adjust = opd->adjust[value / 8]; |
4025353c AM |
11631 | if (adjust == -1) |
11632 | elfsym->st_value = 0; | |
11633 | else | |
11634 | elfsym->st_value += adjust; | |
754021d0 AM |
11635 | return TRUE; |
11636 | } | |
11637 | ||
5bd4f169 AM |
11638 | /* Finish up dynamic symbol handling. We set the contents of various |
11639 | dynamic sections here. */ | |
11640 | ||
b34976b6 | 11641 | static bfd_boolean |
4ce794b7 AM |
11642 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11643 | struct bfd_link_info *info, | |
11644 | struct elf_link_hash_entry *h, | |
11645 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11646 | { |
65f38f15 | 11647 | struct ppc_link_hash_table *htab; |
8387904d AM |
11648 | struct plt_entry *ent; |
11649 | Elf_Internal_Rela rela; | |
11650 | bfd_byte *loc; | |
5bd4f169 | 11651 | |
65f38f15 | 11652 | htab = ppc_hash_table (info); |
5bd4f169 | 11653 | |
8387904d AM |
11654 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11655 | if (ent->plt.offset != (bfd_vma) -1) | |
11656 | { | |
11657 | /* This symbol has an entry in the procedure linkage | |
11658 | table. Set it up. */ | |
11659 | ||
11660 | if (htab->plt == NULL | |
11661 | || htab->relplt == NULL | |
11662 | || htab->glink == NULL) | |
11663 | abort (); | |
11664 | ||
11665 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11666 | fill in the PLT entry. */ | |
11667 | rela.r_offset = (htab->plt->output_section->vma | |
11668 | + htab->plt->output_offset | |
11669 | + ent->plt.offset); | |
11670 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11671 | rela.r_addend = ent->addend; | |
11672 | ||
11673 | loc = htab->relplt->contents; | |
11674 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11675 | * sizeof (Elf64_External_Rela)); | |
11676 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11677 | } | |
5bd4f169 | 11678 | |
f5385ebf | 11679 | if (h->needs_copy) |
5bd4f169 | 11680 | { |
5bd4f169 | 11681 | Elf_Internal_Rela rela; |
947216bf | 11682 | bfd_byte *loc; |
5bd4f169 | 11683 | |
65f38f15 | 11684 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11685 | |
65f38f15 AM |
11686 | if (h->dynindx == -1 |
11687 | || (h->root.type != bfd_link_hash_defined | |
11688 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11689 | || htab->relbss == NULL) |
65f38f15 | 11690 | abort (); |
5bd4f169 AM |
11691 | |
11692 | rela.r_offset = (h->root.u.def.value | |
11693 | + h->root.u.def.section->output_section->vma | |
11694 | + h->root.u.def.section->output_offset); | |
11695 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11696 | rela.r_addend = 0; | |
4ce794b7 AM |
11697 | loc = htab->relbss->contents; |
11698 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11699 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11700 | } |
11701 | ||
5bd4f169 AM |
11702 | /* Mark some specially defined symbols as absolute. */ |
11703 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11704 | sym->st_shndx = SHN_ABS; | |
11705 | ||
b34976b6 | 11706 | return TRUE; |
5bd4f169 AM |
11707 | } |
11708 | ||
65f38f15 AM |
11709 | /* Used to decide how to sort relocs in an optimal manner for the |
11710 | dynamic linker, before writing them out. */ | |
11711 | ||
11712 | static enum elf_reloc_type_class | |
4ce794b7 | 11713 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11714 | { |
04c9666a | 11715 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11716 | |
4ce794b7 | 11717 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11718 | switch (r_type) |
65f38f15 AM |
11719 | { |
11720 | case R_PPC64_RELATIVE: | |
11721 | return reloc_class_relative; | |
11722 | case R_PPC64_JMP_SLOT: | |
11723 | return reloc_class_plt; | |
11724 | case R_PPC64_COPY: | |
11725 | return reloc_class_copy; | |
11726 | default: | |
11727 | return reloc_class_normal; | |
11728 | } | |
11729 | } | |
11730 | ||
5bd4f169 AM |
11731 | /* Finish up the dynamic sections. */ |
11732 | ||
b34976b6 | 11733 | static bfd_boolean |
4ce794b7 AM |
11734 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11735 | struct bfd_link_info *info) | |
5bd4f169 | 11736 | { |
65f38f15 AM |
11737 | struct ppc_link_hash_table *htab; |
11738 | bfd *dynobj; | |
5bd4f169 | 11739 | asection *sdyn; |
5bd4f169 | 11740 | |
65f38f15 AM |
11741 | htab = ppc_hash_table (info); |
11742 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11743 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11744 | ||
65f38f15 | 11745 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11746 | { |
5bd4f169 AM |
11747 | Elf64_External_Dyn *dyncon, *dynconend; |
11748 | ||
4ce794b7 | 11749 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11750 | abort (); |
5bd4f169 AM |
11751 | |
11752 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11753 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11754 | for (; dyncon < dynconend; dyncon++) |
11755 | { | |
11756 | Elf_Internal_Dyn dyn; | |
19397422 | 11757 | asection *s; |
5bd4f169 AM |
11758 | |
11759 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11760 | ||
11761 | switch (dyn.d_tag) | |
11762 | { | |
65f38f15 AM |
11763 | default: |
11764 | continue; | |
5bd4f169 | 11765 | |
5d1634d7 | 11766 | case DT_PPC64_GLINK: |
4ce794b7 | 11767 | s = htab->glink; |
6348e046 | 11768 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11769 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11770 | of glink rather than the first entry point, which is | |
11771 | what ld.so needs, and now have a bigger stub to | |
11772 | support automatic multiple TOCs. */ | |
11773 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11774 | break; |
11775 | ||
19397422 AM |
11776 | case DT_PPC64_OPD: |
11777 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11778 | if (s == NULL) |
11779 | continue; | |
11780 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11781 | break; |
11782 | ||
11783 | case DT_PPC64_OPDSZ: | |
11784 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11785 | if (s == NULL) |
11786 | continue; | |
eea6121a | 11787 | dyn.d_un.d_val = s->size; |
19397422 AM |
11788 | break; |
11789 | ||
65f38f15 | 11790 | case DT_PLTGOT: |
4ce794b7 | 11791 | s = htab->plt; |
6348e046 | 11792 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11793 | break; |
11794 | ||
11795 | case DT_JMPREL: | |
4ce794b7 | 11796 | s = htab->relplt; |
6348e046 | 11797 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11798 | break; |
5bd4f169 | 11799 | |
65f38f15 | 11800 | case DT_PLTRELSZ: |
eea6121a | 11801 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11802 | break; |
11803 | ||
11804 | case DT_RELASZ: | |
11805 | /* Don't count procedure linkage table relocs in the | |
11806 | overall reloc count. */ | |
4ce794b7 | 11807 | s = htab->relplt; |
6348e046 AM |
11808 | if (s == NULL) |
11809 | continue; | |
eea6121a | 11810 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11811 | break; |
11812 | ||
11813 | case DT_RELA: | |
11814 | /* We may not be using the standard ELF linker script. | |
11815 | If .rela.plt is the first .rela section, we adjust | |
11816 | DT_RELA to not include it. */ | |
4ce794b7 | 11817 | s = htab->relplt; |
6348e046 AM |
11818 | if (s == NULL) |
11819 | continue; | |
11820 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11821 | continue; | |
eea6121a | 11822 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11823 | break; |
5bd4f169 | 11824 | } |
5bd4f169 | 11825 | |
65f38f15 | 11826 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11827 | } |
5bd4f169 AM |
11828 | } |
11829 | ||
eea6121a | 11830 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11831 | { |
11832 | /* Fill in the first entry in the global offset table. | |
11833 | We use it to hold the link-time TOCbase. */ | |
11834 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11835 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11836 | htab->got->contents); |
5d1634d7 AM |
11837 | |
11838 | /* Set .got entry size. */ | |
4ce794b7 | 11839 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11840 | } |
11841 | ||
eea6121a | 11842 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11843 | { |
11844 | /* Set .plt entry size. */ | |
4ce794b7 | 11845 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11846 | = PLT_ENTRY_SIZE; |
11847 | } | |
11848 | ||
84f5d08e AM |
11849 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11850 | brlt ourselves if emitrelocations. */ | |
11851 | if (htab->brlt != NULL | |
11852 | && htab->brlt->reloc_count != 0 | |
11853 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11854 | htab->brlt, | |
11855 | &elf_section_data (htab->brlt)->rel_hdr, | |
11856 | elf_section_data (htab->brlt)->relocs, | |
11857 | NULL)) | |
11858 | return FALSE; | |
11859 | ||
176a0d42 AM |
11860 | if (htab->glink != NULL |
11861 | && htab->glink->reloc_count != 0 | |
11862 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11863 | htab->glink, | |
11864 | &elf_section_data (htab->glink)->rel_hdr, | |
11865 | elf_section_data (htab->glink)->relocs, | |
11866 | NULL)) | |
11867 | return FALSE; | |
11868 | ||
e717da7e | 11869 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11870 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11871 | bfd. */ | |
e717da7e AM |
11872 | while ((dynobj = dynobj->link_next) != NULL) |
11873 | { | |
11874 | asection *s; | |
7b53ace3 | 11875 | |
0c8d6e5c | 11876 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
11877 | continue; |
11878 | ||
e717da7e AM |
11879 | s = ppc64_elf_tdata (dynobj)->got; |
11880 | if (s != NULL | |
eea6121a | 11881 | && s->size != 0 |
e717da7e AM |
11882 | && s->output_section != bfd_abs_section_ptr |
11883 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11884 | s->contents, s->output_offset, | |
eea6121a | 11885 | s->size)) |
e717da7e AM |
11886 | return FALSE; |
11887 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11888 | if (s != NULL | |
eea6121a | 11889 | && s->size != 0 |
e717da7e AM |
11890 | && s->output_section != bfd_abs_section_ptr |
11891 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11892 | s->contents, s->output_offset, | |
eea6121a | 11893 | s->size)) |
e717da7e AM |
11894 | return FALSE; |
11895 | } | |
f6c52c13 | 11896 | |
b34976b6 | 11897 | return TRUE; |
5bd4f169 AM |
11898 | } |
11899 | ||
5bd4f169 | 11900 | #include "elf64-target.h" |