Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
3a71aa26 | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
df22d223 | 3 | 2009, 2010, 2011 Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 6 | Largely rewritten by Alan Modra. |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 13 | (at your option) any later version. |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 23 | |
cd123cb7 | 24 | |
4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 28 | |
3db64b00 | 29 | #include "sysdep.h" |
183e98be | 30 | #include <stdarg.h> |
5bd4f169 | 31 | #include "bfd.h" |
5bd4f169 AM |
32 | #include "bfdlink.h" |
33 | #include "libbfd.h" | |
34 | #include "elf-bfd.h" | |
04c9666a | 35 | #include "elf/ppc64.h" |
5d1634d7 | 36 | #include "elf64-ppc.h" |
58d180e8 | 37 | #include "dwarf2.h" |
5bd4f169 | 38 | |
805fc799 | 39 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
41 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
57 | static bfd_vma opd_entry_value |
58 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 59 | |
ad8e1ba5 AM |
60 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
61 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
62 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
63 | #define TARGET_BIG_NAME "elf64-powerpc" | |
64 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 65 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
66 | #define ELF_MACHINE_CODE EM_PPC64 |
67 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 68 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
77 | #define elf_backend_can_refcount 1 | |
78 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 79 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 80 | |
e717da7e | 81 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 82 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 83 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
c79d6685 | 84 | #define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match |
ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
87 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 88 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 89 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
ad8e1ba5 AM |
90 | |
91 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
92 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
93 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 94 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
95 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
96 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 97 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
7d9616d7 | 98 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
97fed1c9 | 99 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 100 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 101 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
74f0fb50 | 102 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 103 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
104 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
105 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
106 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
107 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 110 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 111 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
112 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
113 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
114 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
115 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 116 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 117 | #define elf_backend_special_sections ppc64_elf_special_sections |
e054468f | 118 | #define elf_backend_post_process_headers _bfd_elf_set_osabi |
ad8e1ba5 | 119 | |
5bd4f169 AM |
120 | /* The name of the dynamic interpreter. This is put in the .interp |
121 | section. */ | |
122 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
123 | ||
124 | /* The size in bytes of an entry in the procedure linkage table. */ | |
125 | #define PLT_ENTRY_SIZE 24 | |
126 | ||
127 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 128 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
129 | |
130 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
131 | #define TOC_BASE_OFF 0x8000 |
132 | ||
133 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
134 | #define TP_OFFSET 0x7000 | |
135 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 136 | |
ad8e1ba5 AM |
137 | /* .plt call stub instructions. The normal stub is like this, but |
138 | sometimes the .plt entry crosses a 64k boundary and we need to | |
ac2df442 | 139 | insert an addi to adjust r12. */ |
ad8e1ba5 | 140 | #define PLT_CALL_STUB_SIZE (7*4) |
5d1634d7 AM |
141 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
142 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
143 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
5d1634d7 | 144 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
ac2df442 | 145 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
5d1634d7 AM |
146 | /* ld %r11,xxx+16@l(%r12) */ |
147 | #define BCTR 0x4e800420 /* bctr */ | |
148 | ||
5d1634d7 | 149 | |
ee4bf8d2 | 150 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ac2df442 | 151 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
ad8e1ba5 AM |
152 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
153 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
154 | ||
ac2df442 AM |
155 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
156 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
157 | ||
ad8e1ba5 AM |
158 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
159 | ||
ee4bf8d2 | 160 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 161 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
162 | /* 0: */ |
163 | /* .quad plt0-1f */ | |
164 | /* __glink: */ | |
165 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
166 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
167 | /* 1: */ | |
168 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
169 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
170 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
171 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
172 | /* ld %11,0(%12) */ | |
173 | /* ld %2,8(%12) */ | |
174 | /* mtctr %11 */ | |
175 | /* ld %11,16(%12) */ | |
176 | /* bctr */ | |
5d1634d7 AM |
177 | |
178 | /* Pad with this. */ | |
179 | #define NOP 0x60000000 | |
180 | ||
721956f4 AM |
181 | /* Some other nops. */ |
182 | #define CROR_151515 0x4def7b82 | |
183 | #define CROR_313131 0x4ffffb82 | |
184 | ||
cedb70c5 | 185 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
186 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
187 | #define B_DOT 0x48000000 /* b . */ | |
188 | ||
189 | /* After that, we need two instructions to load the index, followed by | |
190 | a branch. */ | |
191 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 192 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 193 | |
deb0e272 AM |
194 | /* Instructions used by the save and restore reg functions. */ |
195 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
196 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
197 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
198 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
199 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
200 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
201 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
202 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
203 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
204 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
205 | #define BLR 0x4e800020 /* blr */ |
206 | ||
41bd81ab AM |
207 | /* Since .opd is an array of descriptors and each entry will end up |
208 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
209 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 210 | relocate .opd without reloc entries. */ |
41bd81ab AM |
211 | #ifndef NO_OPD_RELOCS |
212 | #define NO_OPD_RELOCS 0 | |
213 | #endif | |
5bd4f169 | 214 | \f |
f5e87a1d | 215 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 216 | |
5bd4f169 | 217 | /* Relocation HOWTO's. */ |
04c9666a | 218 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
219 | |
220 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
221 | /* This reloc does nothing. */ | |
222 | HOWTO (R_PPC64_NONE, /* type */ | |
223 | 0, /* rightshift */ | |
411e1bfb AM |
224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
225 | 32, /* bitsize */ | |
b34976b6 | 226 | FALSE, /* pc_relative */ |
5bd4f169 | 227 | 0, /* bitpos */ |
f5e87a1d | 228 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
229 | bfd_elf_generic_reloc, /* special_function */ |
230 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 231 | FALSE, /* partial_inplace */ |
d006db6c | 232 | 0, /* src_mask */ |
5bd4f169 | 233 | 0, /* dst_mask */ |
b34976b6 | 234 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
235 | |
236 | /* A standard 32 bit relocation. */ | |
237 | HOWTO (R_PPC64_ADDR32, /* type */ | |
238 | 0, /* rightshift */ | |
239 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
240 | 32, /* bitsize */ | |
b34976b6 | 241 | FALSE, /* pc_relative */ |
5bd4f169 AM |
242 | 0, /* bitpos */ |
243 | complain_overflow_bitfield, /* complain_on_overflow */ | |
244 | bfd_elf_generic_reloc, /* special_function */ | |
245 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 246 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
247 | 0, /* src_mask */ |
248 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 249 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
250 | |
251 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
252 | FIXME: we don't check that, we just clear them. */ | |
253 | HOWTO (R_PPC64_ADDR24, /* type */ | |
254 | 0, /* rightshift */ | |
255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
256 | 26, /* bitsize */ | |
b34976b6 | 257 | FALSE, /* pc_relative */ |
5bd4f169 AM |
258 | 0, /* bitpos */ |
259 | complain_overflow_bitfield, /* complain_on_overflow */ | |
260 | bfd_elf_generic_reloc, /* special_function */ | |
261 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 262 | FALSE, /* partial_inplace */ |
d006db6c | 263 | 0, /* src_mask */ |
f5e87a1d | 264 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 265 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
266 | |
267 | /* A standard 16 bit relocation. */ | |
268 | HOWTO (R_PPC64_ADDR16, /* type */ | |
269 | 0, /* rightshift */ | |
270 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
271 | 16, /* bitsize */ | |
b34976b6 | 272 | FALSE, /* pc_relative */ |
5bd4f169 AM |
273 | 0, /* bitpos */ |
274 | complain_overflow_bitfield, /* complain_on_overflow */ | |
275 | bfd_elf_generic_reloc, /* special_function */ | |
276 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 277 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
278 | 0, /* src_mask */ |
279 | 0xffff, /* dst_mask */ | |
b34976b6 | 280 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
281 | |
282 | /* A 16 bit relocation without overflow. */ | |
283 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
284 | 0, /* rightshift */ | |
285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
286 | 16, /* bitsize */ | |
b34976b6 | 287 | FALSE, /* pc_relative */ |
5bd4f169 AM |
288 | 0, /* bitpos */ |
289 | complain_overflow_dont,/* complain_on_overflow */ | |
290 | bfd_elf_generic_reloc, /* special_function */ | |
291 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 292 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
293 | 0, /* src_mask */ |
294 | 0xffff, /* dst_mask */ | |
b34976b6 | 295 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
296 | |
297 | /* Bits 16-31 of an address. */ | |
298 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
299 | 16, /* rightshift */ | |
300 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
301 | 16, /* bitsize */ | |
b34976b6 | 302 | FALSE, /* pc_relative */ |
5bd4f169 AM |
303 | 0, /* bitpos */ |
304 | complain_overflow_dont, /* complain_on_overflow */ | |
305 | bfd_elf_generic_reloc, /* special_function */ | |
306 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 307 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
308 | 0, /* src_mask */ |
309 | 0xffff, /* dst_mask */ | |
b34976b6 | 310 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
311 | |
312 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
313 | bits, treated as a signed number, is negative. */ | |
314 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
315 | 16, /* rightshift */ | |
316 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
317 | 16, /* bitsize */ | |
b34976b6 | 318 | FALSE, /* pc_relative */ |
5bd4f169 AM |
319 | 0, /* bitpos */ |
320 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 321 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 322 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 323 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
324 | 0, /* src_mask */ |
325 | 0xffff, /* dst_mask */ | |
b34976b6 | 326 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
327 | |
328 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
329 | FIXME: we don't check that, we just clear them. */ | |
330 | HOWTO (R_PPC64_ADDR14, /* type */ | |
331 | 0, /* rightshift */ | |
332 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
333 | 16, /* bitsize */ | |
b34976b6 | 334 | FALSE, /* pc_relative */ |
5bd4f169 AM |
335 | 0, /* bitpos */ |
336 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 337 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 338 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 339 | FALSE, /* partial_inplace */ |
d006db6c | 340 | 0, /* src_mask */ |
f5e87a1d | 341 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 342 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
343 | |
344 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
345 | indicate that the branch is expected to be taken. The lower two | |
346 | bits must be zero. */ | |
347 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
348 | 0, /* rightshift */ | |
349 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
350 | 16, /* bitsize */ | |
b34976b6 | 351 | FALSE, /* pc_relative */ |
5bd4f169 AM |
352 | 0, /* bitpos */ |
353 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 354 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 355 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 356 | FALSE, /* partial_inplace */ |
d006db6c | 357 | 0, /* src_mask */ |
f5e87a1d | 358 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 359 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
360 | |
361 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
362 | indicate that the branch is not expected to be taken. The lower | |
363 | two bits must be zero. */ | |
364 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
365 | 0, /* rightshift */ | |
366 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
367 | 16, /* bitsize */ | |
b34976b6 | 368 | FALSE, /* pc_relative */ |
5bd4f169 AM |
369 | 0, /* bitpos */ |
370 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 371 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 372 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 373 | FALSE, /* partial_inplace */ |
d006db6c | 374 | 0, /* src_mask */ |
f5e87a1d | 375 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 376 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
377 | |
378 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
379 | HOWTO (R_PPC64_REL24, /* type */ | |
380 | 0, /* rightshift */ | |
381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
382 | 26, /* bitsize */ | |
b34976b6 | 383 | TRUE, /* pc_relative */ |
5bd4f169 AM |
384 | 0, /* bitpos */ |
385 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 386 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 387 | "R_PPC64_REL24", /* name */ |
b34976b6 | 388 | FALSE, /* partial_inplace */ |
d006db6c | 389 | 0, /* src_mask */ |
f5e87a1d | 390 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 391 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
392 | |
393 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
394 | HOWTO (R_PPC64_REL14, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
397 | 16, /* bitsize */ | |
b34976b6 | 398 | TRUE, /* pc_relative */ |
5bd4f169 AM |
399 | 0, /* bitpos */ |
400 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 401 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 402 | "R_PPC64_REL14", /* name */ |
b34976b6 | 403 | FALSE, /* partial_inplace */ |
d006db6c | 404 | 0, /* src_mask */ |
f5e87a1d | 405 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 406 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
407 | |
408 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
409 | the branch is expected to be taken. The lower two bits must be | |
410 | zero. */ | |
411 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
412 | 0, /* rightshift */ | |
413 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
414 | 16, /* bitsize */ | |
b34976b6 | 415 | TRUE, /* pc_relative */ |
5bd4f169 AM |
416 | 0, /* bitpos */ |
417 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 418 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 419 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 420 | FALSE, /* partial_inplace */ |
d006db6c | 421 | 0, /* src_mask */ |
f5e87a1d | 422 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 423 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
424 | |
425 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
426 | the branch is not expected to be taken. The lower two bits must | |
427 | be zero. */ | |
428 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
429 | 0, /* rightshift */ | |
430 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
431 | 16, /* bitsize */ | |
b34976b6 | 432 | TRUE, /* pc_relative */ |
5bd4f169 AM |
433 | 0, /* bitpos */ |
434 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 435 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 436 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 437 | FALSE, /* partial_inplace */ |
d006db6c | 438 | 0, /* src_mask */ |
f5e87a1d | 439 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 440 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
441 | |
442 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
443 | symbol. */ | |
444 | HOWTO (R_PPC64_GOT16, /* type */ | |
445 | 0, /* rightshift */ | |
446 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
447 | 16, /* bitsize */ | |
b34976b6 | 448 | FALSE, /* pc_relative */ |
5bd4f169 AM |
449 | 0, /* bitpos */ |
450 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 451 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 452 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 453 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
454 | 0, /* src_mask */ |
455 | 0xffff, /* dst_mask */ | |
b34976b6 | 456 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
457 | |
458 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
459 | the symbol. */ | |
460 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
461 | 0, /* rightshift */ | |
462 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
463 | 16, /* bitsize */ | |
b34976b6 | 464 | FALSE, /* pc_relative */ |
5bd4f169 AM |
465 | 0, /* bitpos */ |
466 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 467 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 468 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 469 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
470 | 0, /* src_mask */ |
471 | 0xffff, /* dst_mask */ | |
b34976b6 | 472 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
473 | |
474 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
475 | the symbol. */ | |
476 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
477 | 16, /* rightshift */ | |
478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
479 | 16, /* bitsize */ | |
b34976b6 | 480 | FALSE, /* pc_relative */ |
5bd4f169 AM |
481 | 0, /* bitpos */ |
482 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 483 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 484 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 485 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
486 | 0, /* src_mask */ |
487 | 0xffff, /* dst_mask */ | |
b34976b6 | 488 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
489 | |
490 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
491 | the symbol. */ | |
492 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
493 | 16, /* rightshift */ | |
494 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 16, /* bitsize */ | |
b34976b6 | 496 | FALSE, /* pc_relative */ |
5bd4f169 AM |
497 | 0, /* bitpos */ |
498 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 499 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 500 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 501 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
502 | 0, /* src_mask */ |
503 | 0xffff, /* dst_mask */ | |
b34976b6 | 504 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
505 | |
506 | /* This is used only by the dynamic linker. The symbol should exist | |
507 | both in the object being run and in some shared library. The | |
508 | dynamic linker copies the data addressed by the symbol from the | |
509 | shared library into the object, because the object being | |
510 | run has to have the data at some particular address. */ | |
511 | HOWTO (R_PPC64_COPY, /* type */ | |
512 | 0, /* rightshift */ | |
f5e87a1d AM |
513 | 0, /* this one is variable size */ |
514 | 0, /* bitsize */ | |
b34976b6 | 515 | FALSE, /* pc_relative */ |
5bd4f169 | 516 | 0, /* bitpos */ |
f5e87a1d AM |
517 | complain_overflow_dont, /* complain_on_overflow */ |
518 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 519 | "R_PPC64_COPY", /* name */ |
b34976b6 | 520 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
521 | 0, /* src_mask */ |
522 | 0, /* dst_mask */ | |
b34976b6 | 523 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
524 | |
525 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
526 | entries. */ | |
527 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
530 | 64, /* bitsize */ | |
b34976b6 | 531 | FALSE, /* pc_relative */ |
5bd4f169 AM |
532 | 0, /* bitpos */ |
533 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 534 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 535 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 536 | FALSE, /* partial_inplace */ |
5bd4f169 | 537 | 0, /* src_mask */ |
f5e87a1d | 538 | ONES (64), /* dst_mask */ |
b34976b6 | 539 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
540 | |
541 | /* Created by the link editor. Marks a procedure linkage table | |
542 | entry for a symbol. */ | |
543 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
544 | 0, /* rightshift */ | |
545 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
546 | 0, /* bitsize */ | |
b34976b6 | 547 | FALSE, /* pc_relative */ |
5bd4f169 AM |
548 | 0, /* bitpos */ |
549 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 550 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 551 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 552 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
553 | 0, /* src_mask */ |
554 | 0, /* dst_mask */ | |
b34976b6 | 555 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
556 | |
557 | /* Used only by the dynamic linker. When the object is run, this | |
558 | doubleword64 is set to the load address of the object, plus the | |
559 | addend. */ | |
560 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
561 | 0, /* rightshift */ | |
562 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
563 | 64, /* bitsize */ | |
b34976b6 | 564 | FALSE, /* pc_relative */ |
5bd4f169 AM |
565 | 0, /* bitpos */ |
566 | complain_overflow_dont, /* complain_on_overflow */ | |
567 | bfd_elf_generic_reloc, /* special_function */ | |
568 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 569 | FALSE, /* partial_inplace */ |
5bd4f169 | 570 | 0, /* src_mask */ |
f5e87a1d | 571 | ONES (64), /* dst_mask */ |
b34976b6 | 572 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
573 | |
574 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
575 | HOWTO (R_PPC64_UADDR32, /* type */ | |
576 | 0, /* rightshift */ | |
577 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
578 | 32, /* bitsize */ | |
b34976b6 | 579 | FALSE, /* pc_relative */ |
5bd4f169 AM |
580 | 0, /* bitpos */ |
581 | complain_overflow_bitfield, /* complain_on_overflow */ | |
582 | bfd_elf_generic_reloc, /* special_function */ | |
583 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 584 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
585 | 0, /* src_mask */ |
586 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 587 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
588 | |
589 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
590 | HOWTO (R_PPC64_UADDR16, /* type */ | |
591 | 0, /* rightshift */ | |
592 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
593 | 16, /* bitsize */ | |
b34976b6 | 594 | FALSE, /* pc_relative */ |
5bd4f169 AM |
595 | 0, /* bitpos */ |
596 | complain_overflow_bitfield, /* complain_on_overflow */ | |
597 | bfd_elf_generic_reloc, /* special_function */ | |
598 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 599 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
600 | 0, /* src_mask */ |
601 | 0xffff, /* dst_mask */ | |
b34976b6 | 602 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
603 | |
604 | /* 32-bit PC relative. */ | |
605 | HOWTO (R_PPC64_REL32, /* type */ | |
606 | 0, /* rightshift */ | |
607 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
608 | 32, /* bitsize */ | |
b34976b6 | 609 | TRUE, /* pc_relative */ |
5bd4f169 | 610 | 0, /* bitpos */ |
cedb70c5 | 611 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
612 | complain_overflow_signed, /* complain_on_overflow */ |
613 | bfd_elf_generic_reloc, /* special_function */ | |
614 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 615 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
616 | 0, /* src_mask */ |
617 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 618 | TRUE), /* pcrel_offset */ |
5bd4f169 | 619 | |
10ed1bba | 620 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
621 | HOWTO (R_PPC64_PLT32, /* type */ |
622 | 0, /* rightshift */ | |
623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
624 | 32, /* bitsize */ | |
b34976b6 | 625 | FALSE, /* pc_relative */ |
5bd4f169 AM |
626 | 0, /* bitpos */ |
627 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 628 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 629 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 630 | FALSE, /* partial_inplace */ |
5bd4f169 | 631 | 0, /* src_mask */ |
f5e87a1d | 632 | 0xffffffff, /* dst_mask */ |
b34976b6 | 633 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
634 | |
635 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
636 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
637 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
638 | 0, /* rightshift */ | |
639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
640 | 32, /* bitsize */ | |
b34976b6 | 641 | TRUE, /* pc_relative */ |
5bd4f169 AM |
642 | 0, /* bitpos */ |
643 | complain_overflow_signed, /* complain_on_overflow */ | |
644 | bfd_elf_generic_reloc, /* special_function */ | |
645 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 646 | FALSE, /* partial_inplace */ |
5bd4f169 | 647 | 0, /* src_mask */ |
f5e87a1d | 648 | 0xffffffff, /* dst_mask */ |
b34976b6 | 649 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
650 | |
651 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
652 | the symbol. */ | |
653 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
654 | 0, /* rightshift */ | |
655 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
656 | 16, /* bitsize */ | |
b34976b6 | 657 | FALSE, /* pc_relative */ |
5bd4f169 AM |
658 | 0, /* bitpos */ |
659 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 660 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 661 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 662 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
663 | 0, /* src_mask */ |
664 | 0xffff, /* dst_mask */ | |
b34976b6 | 665 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
666 | |
667 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
668 | the symbol. */ | |
669 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
670 | 16, /* rightshift */ | |
671 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
672 | 16, /* bitsize */ | |
b34976b6 | 673 | FALSE, /* pc_relative */ |
5bd4f169 AM |
674 | 0, /* bitpos */ |
675 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 676 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 677 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 678 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
679 | 0, /* src_mask */ |
680 | 0xffff, /* dst_mask */ | |
b34976b6 | 681 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
682 | |
683 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
684 | the symbol. */ | |
685 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
686 | 16, /* rightshift */ | |
687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
688 | 16, /* bitsize */ | |
b34976b6 | 689 | FALSE, /* pc_relative */ |
5bd4f169 AM |
690 | 0, /* bitpos */ |
691 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 692 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 693 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 694 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
695 | 0, /* src_mask */ |
696 | 0xffff, /* dst_mask */ | |
b34976b6 | 697 | FALSE), /* pcrel_offset */ |
5bd4f169 | 698 | |
c061c2d8 | 699 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
700 | HOWTO (R_PPC64_SECTOFF, /* type */ |
701 | 0, /* rightshift */ | |
c061c2d8 AM |
702 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
703 | 16, /* bitsize */ | |
b34976b6 | 704 | FALSE, /* pc_relative */ |
5bd4f169 AM |
705 | 0, /* bitpos */ |
706 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 707 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 708 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 709 | FALSE, /* partial_inplace */ |
5bd4f169 | 710 | 0, /* src_mask */ |
c061c2d8 | 711 | 0xffff, /* dst_mask */ |
b34976b6 | 712 | FALSE), /* pcrel_offset */ |
5bd4f169 | 713 | |
c061c2d8 | 714 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
715 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
716 | 0, /* rightshift */ | |
717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
718 | 16, /* bitsize */ | |
b34976b6 | 719 | FALSE, /* pc_relative */ |
5bd4f169 AM |
720 | 0, /* bitpos */ |
721 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 722 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 723 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 724 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
725 | 0, /* src_mask */ |
726 | 0xffff, /* dst_mask */ | |
b34976b6 | 727 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
728 | |
729 | /* 16-bit upper half section relative relocation. */ | |
730 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
731 | 16, /* rightshift */ | |
732 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
733 | 16, /* bitsize */ | |
b34976b6 | 734 | FALSE, /* pc_relative */ |
5bd4f169 AM |
735 | 0, /* bitpos */ |
736 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 737 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 738 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 739 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
740 | 0, /* src_mask */ |
741 | 0xffff, /* dst_mask */ | |
b34976b6 | 742 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
743 | |
744 | /* 16-bit upper half adjusted section relative relocation. */ | |
745 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
746 | 16, /* rightshift */ | |
747 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
748 | 16, /* bitsize */ | |
b34976b6 | 749 | FALSE, /* pc_relative */ |
5bd4f169 AM |
750 | 0, /* bitpos */ |
751 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 752 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 753 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 754 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
755 | 0, /* src_mask */ |
756 | 0xffff, /* dst_mask */ | |
b34976b6 | 757 | FALSE), /* pcrel_offset */ |
5bd4f169 | 758 | |
04c9666a AM |
759 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
760 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
761 | 2, /* rightshift */ |
762 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
763 | 30, /* bitsize */ | |
b34976b6 | 764 | TRUE, /* pc_relative */ |
5bd4f169 AM |
765 | 0, /* bitpos */ |
766 | complain_overflow_dont, /* complain_on_overflow */ | |
767 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 768 | "R_PPC64_REL30", /* name */ |
b34976b6 | 769 | FALSE, /* partial_inplace */ |
d006db6c | 770 | 0, /* src_mask */ |
5bd4f169 | 771 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 772 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
773 | |
774 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
775 | ||
776 | /* A standard 64-bit relocation. */ | |
777 | HOWTO (R_PPC64_ADDR64, /* type */ | |
778 | 0, /* rightshift */ | |
779 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
780 | 64, /* bitsize */ | |
b34976b6 | 781 | FALSE, /* pc_relative */ |
5bd4f169 AM |
782 | 0, /* bitpos */ |
783 | complain_overflow_dont, /* complain_on_overflow */ | |
784 | bfd_elf_generic_reloc, /* special_function */ | |
785 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 786 | FALSE, /* partial_inplace */ |
5bd4f169 | 787 | 0, /* src_mask */ |
f5e87a1d | 788 | ONES (64), /* dst_mask */ |
b34976b6 | 789 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
790 | |
791 | /* The bits 32-47 of an address. */ | |
792 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
793 | 32, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
b34976b6 | 796 | FALSE, /* pc_relative */ |
5bd4f169 AM |
797 | 0, /* bitpos */ |
798 | complain_overflow_dont, /* complain_on_overflow */ | |
799 | bfd_elf_generic_reloc, /* special_function */ | |
800 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 801 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
802 | 0, /* src_mask */ |
803 | 0xffff, /* dst_mask */ | |
b34976b6 | 804 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
805 | |
806 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
807 | 16 bits, treated as a signed number, is negative. */ | |
808 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
809 | 32, /* rightshift */ | |
810 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
811 | 16, /* bitsize */ | |
b34976b6 | 812 | FALSE, /* pc_relative */ |
5bd4f169 AM |
813 | 0, /* bitpos */ |
814 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 815 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 816 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 817 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
818 | 0, /* src_mask */ |
819 | 0xffff, /* dst_mask */ | |
b34976b6 | 820 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
821 | |
822 | /* The bits 48-63 of an address. */ | |
823 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
824 | 48, /* rightshift */ | |
825 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 16, /* bitsize */ | |
b34976b6 | 827 | FALSE, /* pc_relative */ |
5bd4f169 AM |
828 | 0, /* bitpos */ |
829 | complain_overflow_dont, /* complain_on_overflow */ | |
830 | bfd_elf_generic_reloc, /* special_function */ | |
831 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 832 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
833 | 0, /* src_mask */ |
834 | 0xffff, /* dst_mask */ | |
b34976b6 | 835 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
836 | |
837 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
838 | 16 bits, treated as a signed number, is negative. */ | |
839 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
840 | 48, /* rightshift */ | |
841 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 16, /* bitsize */ | |
b34976b6 | 843 | FALSE, /* pc_relative */ |
5bd4f169 AM |
844 | 0, /* bitpos */ |
845 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 846 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 847 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 848 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
849 | 0, /* src_mask */ |
850 | 0xffff, /* dst_mask */ | |
b34976b6 | 851 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
852 | |
853 | /* Like ADDR64, but may be unaligned. */ | |
854 | HOWTO (R_PPC64_UADDR64, /* type */ | |
855 | 0, /* rightshift */ | |
856 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
857 | 64, /* bitsize */ | |
b34976b6 | 858 | FALSE, /* pc_relative */ |
5bd4f169 AM |
859 | 0, /* bitpos */ |
860 | complain_overflow_dont, /* complain_on_overflow */ | |
861 | bfd_elf_generic_reloc, /* special_function */ | |
862 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 863 | FALSE, /* partial_inplace */ |
5bd4f169 | 864 | 0, /* src_mask */ |
f5e87a1d | 865 | ONES (64), /* dst_mask */ |
b34976b6 | 866 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
867 | |
868 | /* 64-bit relative relocation. */ | |
869 | HOWTO (R_PPC64_REL64, /* type */ | |
870 | 0, /* rightshift */ | |
871 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
872 | 64, /* bitsize */ | |
b34976b6 | 873 | TRUE, /* pc_relative */ |
5bd4f169 AM |
874 | 0, /* bitpos */ |
875 | complain_overflow_dont, /* complain_on_overflow */ | |
876 | bfd_elf_generic_reloc, /* special_function */ | |
877 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 878 | FALSE, /* partial_inplace */ |
5bd4f169 | 879 | 0, /* src_mask */ |
f5e87a1d | 880 | ONES (64), /* dst_mask */ |
b34976b6 | 881 | TRUE), /* pcrel_offset */ |
5bd4f169 | 882 | |
cedb70c5 | 883 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
884 | HOWTO (R_PPC64_PLT64, /* type */ |
885 | 0, /* rightshift */ | |
886 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
887 | 64, /* bitsize */ | |
b34976b6 | 888 | FALSE, /* pc_relative */ |
5bd4f169 AM |
889 | 0, /* bitpos */ |
890 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 891 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 892 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 893 | FALSE, /* partial_inplace */ |
5bd4f169 | 894 | 0, /* src_mask */ |
f5e87a1d | 895 | ONES (64), /* dst_mask */ |
b34976b6 | 896 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
897 | |
898 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
899 | table. */ | |
900 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
901 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
902 | 0, /* rightshift */ | |
903 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
904 | 64, /* bitsize */ | |
b34976b6 | 905 | TRUE, /* pc_relative */ |
5bd4f169 AM |
906 | 0, /* bitpos */ |
907 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 908 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 909 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 910 | FALSE, /* partial_inplace */ |
5bd4f169 | 911 | 0, /* src_mask */ |
f5e87a1d | 912 | ONES (64), /* dst_mask */ |
b34976b6 | 913 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
914 | |
915 | /* 16 bit TOC-relative relocation. */ | |
916 | ||
917 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
918 | HOWTO (R_PPC64_TOC16, /* type */ | |
919 | 0, /* rightshift */ | |
920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 16, /* bitsize */ | |
b34976b6 | 922 | FALSE, /* pc_relative */ |
5bd4f169 AM |
923 | 0, /* bitpos */ |
924 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 925 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 926 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 927 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
928 | 0, /* src_mask */ |
929 | 0xffff, /* dst_mask */ | |
b34976b6 | 930 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
931 | |
932 | /* 16 bit TOC-relative relocation without overflow. */ | |
933 | ||
934 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
935 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
936 | 0, /* rightshift */ | |
937 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
938 | 16, /* bitsize */ | |
b34976b6 | 939 | FALSE, /* pc_relative */ |
5bd4f169 AM |
940 | 0, /* bitpos */ |
941 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 942 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 943 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 944 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
945 | 0, /* src_mask */ |
946 | 0xffff, /* dst_mask */ | |
b34976b6 | 947 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
948 | |
949 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
950 | ||
951 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
952 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
953 | 16, /* rightshift */ | |
954 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
955 | 16, /* bitsize */ | |
b34976b6 | 956 | FALSE, /* pc_relative */ |
5bd4f169 AM |
957 | 0, /* bitpos */ |
958 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 959 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 960 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 961 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
962 | 0, /* src_mask */ |
963 | 0xffff, /* dst_mask */ | |
b34976b6 | 964 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
965 | |
966 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
967 | contents of the low 16 bits, treated as a signed number, is | |
968 | negative. */ | |
969 | ||
970 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
971 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
972 | 16, /* rightshift */ | |
973 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
974 | 16, /* bitsize */ | |
b34976b6 | 975 | FALSE, /* pc_relative */ |
5bd4f169 AM |
976 | 0, /* bitpos */ |
977 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 978 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 979 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 980 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
981 | 0, /* src_mask */ |
982 | 0xffff, /* dst_mask */ | |
b34976b6 | 983 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
984 | |
985 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
986 | ||
987 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
988 | HOWTO (R_PPC64_TOC, /* type */ | |
989 | 0, /* rightshift */ | |
990 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
991 | 64, /* bitsize */ | |
b34976b6 | 992 | FALSE, /* pc_relative */ |
5bd4f169 AM |
993 | 0, /* bitpos */ |
994 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 995 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 996 | "R_PPC64_TOC", /* name */ |
b34976b6 | 997 | FALSE, /* partial_inplace */ |
5bd4f169 | 998 | 0, /* src_mask */ |
f5e87a1d | 999 | ONES (64), /* dst_mask */ |
b34976b6 | 1000 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1001 | |
1002 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1003 | value to relocate may (!) refer to a PLT entry which the link | |
1004 | editor (a) may replace with the symbol value. If the link editor | |
1005 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1006 | entry and store the address to the new PLT entry in the GOT. | |
1007 | This permits lazy resolution of function symbols at run time. | |
1008 | The link editor may also skip all of this and just (c) emit a | |
1009 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1010 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1011 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1012 | 0, /* rightshift */ | |
1013 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1014 | 16, /* bitsize */ | |
b34976b6 | 1015 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1016 | 0, /* bitpos */ |
1017 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1018 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1019 | "R_PPC64_PLTGOT16", /* name */ |
1020 | FALSE, /* partial_inplace */ | |
1021 | 0, /* src_mask */ | |
1022 | 0xffff, /* dst_mask */ | |
1023 | FALSE), /* pcrel_offset */ | |
1024 | ||
1025 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1026 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1027 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1028 | 0, /* rightshift */ | |
1029 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1030 | 16, /* bitsize */ | |
1031 | FALSE, /* pc_relative */ | |
1032 | 0, /* bitpos */ | |
1033 | complain_overflow_dont, /* complain_on_overflow */ | |
1034 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1035 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1036 | FALSE, /* partial_inplace */ | |
1037 | 0, /* src_mask */ | |
1038 | 0xffff, /* dst_mask */ | |
1039 | FALSE), /* pcrel_offset */ | |
1040 | ||
1041 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1042 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1043 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1044 | 16, /* rightshift */ | |
1045 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1046 | 16, /* bitsize */ | |
1047 | FALSE, /* pc_relative */ | |
1048 | 0, /* bitpos */ | |
1049 | complain_overflow_dont, /* complain_on_overflow */ | |
1050 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1051 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1052 | FALSE, /* partial_inplace */ | |
1053 | 0, /* src_mask */ | |
1054 | 0xffff, /* dst_mask */ | |
1055 | FALSE), /* pcrel_offset */ | |
1056 | ||
1057 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1058 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1059 | is negative. */ | |
1060 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1061 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1062 | 16, /* rightshift */ | |
1063 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1064 | 16, /* bitsize */ | |
1065 | FALSE, /* pc_relative */ | |
1066 | 0, /* bitpos */ | |
1067 | complain_overflow_dont,/* complain_on_overflow */ | |
1068 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1069 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1070 | FALSE, /* partial_inplace */ | |
1071 | 0, /* src_mask */ | |
1072 | 0xffff, /* dst_mask */ | |
1073 | FALSE), /* pcrel_offset */ | |
1074 | ||
1075 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1076 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1077 | 0, /* rightshift */ | |
1078 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1079 | 16, /* bitsize */ | |
1080 | FALSE, /* pc_relative */ | |
1081 | 0, /* bitpos */ | |
1082 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1083 | bfd_elf_generic_reloc, /* special_function */ | |
1084 | "R_PPC64_ADDR16_DS", /* name */ | |
1085 | FALSE, /* partial_inplace */ | |
1086 | 0, /* src_mask */ | |
1087 | 0xfffc, /* dst_mask */ | |
1088 | FALSE), /* pcrel_offset */ | |
1089 | ||
1090 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1091 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1092 | 0, /* rightshift */ | |
1093 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1094 | 16, /* bitsize */ | |
1095 | FALSE, /* pc_relative */ | |
1096 | 0, /* bitpos */ | |
1097 | complain_overflow_dont,/* complain_on_overflow */ | |
1098 | bfd_elf_generic_reloc, /* special_function */ | |
1099 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1100 | FALSE, /* partial_inplace */ | |
1101 | 0, /* src_mask */ | |
1102 | 0xfffc, /* dst_mask */ | |
1103 | FALSE), /* pcrel_offset */ | |
1104 | ||
1105 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1106 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1107 | 0, /* rightshift */ | |
1108 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 16, /* bitsize */ | |
1110 | FALSE, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_signed, /* complain_on_overflow */ | |
1113 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1114 | "R_PPC64_GOT16_DS", /* name */ | |
1115 | FALSE, /* partial_inplace */ | |
1116 | 0, /* src_mask */ | |
1117 | 0xfffc, /* dst_mask */ | |
1118 | FALSE), /* pcrel_offset */ | |
1119 | ||
1120 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1121 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1122 | 0, /* rightshift */ | |
1123 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1124 | 16, /* bitsize */ | |
1125 | FALSE, /* pc_relative */ | |
1126 | 0, /* bitpos */ | |
1127 | complain_overflow_dont, /* complain_on_overflow */ | |
1128 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1129 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1130 | FALSE, /* partial_inplace */ | |
1131 | 0, /* src_mask */ | |
1132 | 0xfffc, /* dst_mask */ | |
1133 | FALSE), /* pcrel_offset */ | |
1134 | ||
1135 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1136 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1137 | 0, /* rightshift */ | |
1138 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1139 | 16, /* bitsize */ | |
1140 | FALSE, /* pc_relative */ | |
1141 | 0, /* bitpos */ | |
1142 | complain_overflow_dont, /* complain_on_overflow */ | |
1143 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1144 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1145 | FALSE, /* partial_inplace */ | |
1146 | 0, /* src_mask */ | |
1147 | 0xfffc, /* dst_mask */ | |
1148 | FALSE), /* pcrel_offset */ | |
1149 | ||
1150 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1151 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1152 | 0, /* rightshift */ | |
1153 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1154 | 16, /* bitsize */ | |
1155 | FALSE, /* pc_relative */ | |
1156 | 0, /* bitpos */ | |
1157 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1158 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1159 | "R_PPC64_SECTOFF_DS", /* name */ | |
1160 | FALSE, /* partial_inplace */ | |
1161 | 0, /* src_mask */ | |
1162 | 0xfffc, /* dst_mask */ | |
1163 | FALSE), /* pcrel_offset */ | |
1164 | ||
1165 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1166 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1167 | 0, /* rightshift */ | |
1168 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1169 | 16, /* bitsize */ | |
1170 | FALSE, /* pc_relative */ | |
1171 | 0, /* bitpos */ | |
1172 | complain_overflow_dont, /* complain_on_overflow */ | |
1173 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1174 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1175 | FALSE, /* partial_inplace */ | |
1176 | 0, /* src_mask */ | |
1177 | 0xfffc, /* dst_mask */ | |
1178 | FALSE), /* pcrel_offset */ | |
1179 | ||
1180 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1181 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1182 | 0, /* rightshift */ | |
1183 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1184 | 16, /* bitsize */ | |
1185 | FALSE, /* pc_relative */ | |
1186 | 0, /* bitpos */ | |
1187 | complain_overflow_signed, /* complain_on_overflow */ | |
1188 | ppc64_elf_toc_reloc, /* special_function */ | |
1189 | "R_PPC64_TOC16_DS", /* name */ | |
1190 | FALSE, /* partial_inplace */ | |
1191 | 0, /* src_mask */ | |
1192 | 0xfffc, /* dst_mask */ | |
1193 | FALSE), /* pcrel_offset */ | |
1194 | ||
1195 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1196 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1197 | 0, /* rightshift */ | |
1198 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1199 | 16, /* bitsize */ | |
1200 | FALSE, /* pc_relative */ | |
1201 | 0, /* bitpos */ | |
1202 | complain_overflow_dont, /* complain_on_overflow */ | |
1203 | ppc64_elf_toc_reloc, /* special_function */ | |
1204 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1205 | FALSE, /* partial_inplace */ | |
1206 | 0, /* src_mask */ | |
1207 | 0xfffc, /* dst_mask */ | |
1208 | FALSE), /* pcrel_offset */ | |
1209 | ||
1210 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1211 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1212 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1213 | 0, /* rightshift */ |
1214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1215 | 16, /* bitsize */ | |
1216 | FALSE, /* pc_relative */ | |
1217 | 0, /* bitpos */ | |
1218 | complain_overflow_signed, /* complain_on_overflow */ | |
1219 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1220 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1221 | FALSE, /* partial_inplace */ | |
1222 | 0, /* src_mask */ | |
1223 | 0xfffc, /* dst_mask */ | |
1224 | FALSE), /* pcrel_offset */ | |
1225 | ||
1226 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1227 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1228 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1229 | 0, /* rightshift */ | |
1230 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1231 | 16, /* bitsize */ | |
1232 | FALSE, /* pc_relative */ | |
1233 | 0, /* bitpos */ | |
1234 | complain_overflow_dont, /* complain_on_overflow */ | |
1235 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1236 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1237 | FALSE, /* partial_inplace */ | |
1238 | 0, /* src_mask */ | |
1239 | 0xfffc, /* dst_mask */ | |
1240 | FALSE), /* pcrel_offset */ | |
1241 | ||
727fc41e | 1242 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1243 | HOWTO (R_PPC64_TLS, |
1244 | 0, /* rightshift */ | |
1245 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1246 | 32, /* bitsize */ | |
1247 | FALSE, /* pc_relative */ | |
1248 | 0, /* bitpos */ | |
1249 | complain_overflow_dont, /* complain_on_overflow */ | |
1250 | bfd_elf_generic_reloc, /* special_function */ | |
1251 | "R_PPC64_TLS", /* name */ | |
1252 | FALSE, /* partial_inplace */ | |
1253 | 0, /* src_mask */ | |
1254 | 0, /* dst_mask */ | |
1255 | FALSE), /* pcrel_offset */ | |
1256 | ||
727fc41e AM |
1257 | HOWTO (R_PPC64_TLSGD, |
1258 | 0, /* rightshift */ | |
1259 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1260 | 32, /* bitsize */ | |
1261 | FALSE, /* pc_relative */ | |
1262 | 0, /* bitpos */ | |
1263 | complain_overflow_dont, /* complain_on_overflow */ | |
1264 | bfd_elf_generic_reloc, /* special_function */ | |
1265 | "R_PPC64_TLSGD", /* name */ | |
1266 | FALSE, /* partial_inplace */ | |
1267 | 0, /* src_mask */ | |
1268 | 0, /* dst_mask */ | |
1269 | FALSE), /* pcrel_offset */ | |
1270 | ||
1271 | HOWTO (R_PPC64_TLSLD, | |
1272 | 0, /* rightshift */ | |
1273 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1274 | 32, /* bitsize */ | |
1275 | FALSE, /* pc_relative */ | |
1276 | 0, /* bitpos */ | |
1277 | complain_overflow_dont, /* complain_on_overflow */ | |
1278 | bfd_elf_generic_reloc, /* special_function */ | |
1279 | "R_PPC64_TLSLD", /* name */ | |
1280 | FALSE, /* partial_inplace */ | |
1281 | 0, /* src_mask */ | |
1282 | 0, /* dst_mask */ | |
1283 | FALSE), /* pcrel_offset */ | |
1284 | ||
3b421ab3 AM |
1285 | HOWTO (R_PPC64_TOCSAVE, |
1286 | 0, /* rightshift */ | |
1287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1288 | 32, /* bitsize */ | |
1289 | FALSE, /* pc_relative */ | |
1290 | 0, /* bitpos */ | |
1291 | complain_overflow_dont, /* complain_on_overflow */ | |
1292 | bfd_elf_generic_reloc, /* special_function */ | |
1293 | "R_PPC64_TOCSAVE", /* name */ | |
1294 | FALSE, /* partial_inplace */ | |
1295 | 0, /* src_mask */ | |
1296 | 0, /* dst_mask */ | |
1297 | FALSE), /* pcrel_offset */ | |
1298 | ||
411e1bfb AM |
1299 | /* Computes the load module index of the load module that contains the |
1300 | definition of its TLS sym. */ | |
1301 | HOWTO (R_PPC64_DTPMOD64, | |
1302 | 0, /* rightshift */ | |
1303 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1304 | 64, /* bitsize */ | |
1305 | FALSE, /* pc_relative */ | |
1306 | 0, /* bitpos */ | |
1307 | complain_overflow_dont, /* complain_on_overflow */ | |
1308 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1309 | "R_PPC64_DTPMOD64", /* name */ | |
1310 | FALSE, /* partial_inplace */ | |
1311 | 0, /* src_mask */ | |
1312 | ONES (64), /* dst_mask */ | |
1313 | FALSE), /* pcrel_offset */ | |
1314 | ||
1315 | /* Computes a dtv-relative displacement, the difference between the value | |
1316 | of sym+add and the base address of the thread-local storage block that | |
1317 | contains the definition of sym, minus 0x8000. */ | |
1318 | HOWTO (R_PPC64_DTPREL64, | |
1319 | 0, /* rightshift */ | |
1320 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1321 | 64, /* bitsize */ | |
1322 | FALSE, /* pc_relative */ | |
1323 | 0, /* bitpos */ | |
1324 | complain_overflow_dont, /* complain_on_overflow */ | |
1325 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1326 | "R_PPC64_DTPREL64", /* name */ | |
1327 | FALSE, /* partial_inplace */ | |
1328 | 0, /* src_mask */ | |
1329 | ONES (64), /* dst_mask */ | |
1330 | FALSE), /* pcrel_offset */ | |
1331 | ||
1332 | /* A 16 bit dtprel reloc. */ | |
1333 | HOWTO (R_PPC64_DTPREL16, | |
1334 | 0, /* rightshift */ | |
1335 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1336 | 16, /* bitsize */ | |
1337 | FALSE, /* pc_relative */ | |
1338 | 0, /* bitpos */ | |
1339 | complain_overflow_signed, /* complain_on_overflow */ | |
1340 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1341 | "R_PPC64_DTPREL16", /* name */ | |
1342 | FALSE, /* partial_inplace */ | |
1343 | 0, /* src_mask */ | |
1344 | 0xffff, /* dst_mask */ | |
1345 | FALSE), /* pcrel_offset */ | |
1346 | ||
1347 | /* Like DTPREL16, but no overflow. */ | |
1348 | HOWTO (R_PPC64_DTPREL16_LO, | |
1349 | 0, /* rightshift */ | |
1350 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1351 | 16, /* bitsize */ | |
1352 | FALSE, /* pc_relative */ | |
1353 | 0, /* bitpos */ | |
1354 | complain_overflow_dont, /* complain_on_overflow */ | |
1355 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1356 | "R_PPC64_DTPREL16_LO", /* name */ | |
1357 | FALSE, /* partial_inplace */ | |
1358 | 0, /* src_mask */ | |
1359 | 0xffff, /* dst_mask */ | |
1360 | FALSE), /* pcrel_offset */ | |
1361 | ||
1362 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1363 | HOWTO (R_PPC64_DTPREL16_HI, | |
1364 | 16, /* rightshift */ | |
1365 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1366 | 16, /* bitsize */ | |
1367 | FALSE, /* pc_relative */ | |
1368 | 0, /* bitpos */ | |
1369 | complain_overflow_dont, /* complain_on_overflow */ | |
1370 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1371 | "R_PPC64_DTPREL16_HI", /* name */ | |
1372 | FALSE, /* partial_inplace */ | |
1373 | 0, /* src_mask */ | |
1374 | 0xffff, /* dst_mask */ | |
1375 | FALSE), /* pcrel_offset */ | |
1376 | ||
1377 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1378 | HOWTO (R_PPC64_DTPREL16_HA, | |
1379 | 16, /* rightshift */ | |
1380 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1381 | 16, /* bitsize */ | |
1382 | FALSE, /* pc_relative */ | |
1383 | 0, /* bitpos */ | |
1384 | complain_overflow_dont, /* complain_on_overflow */ | |
1385 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1386 | "R_PPC64_DTPREL16_HA", /* name */ | |
1387 | FALSE, /* partial_inplace */ | |
1388 | 0, /* src_mask */ | |
1389 | 0xffff, /* dst_mask */ | |
1390 | FALSE), /* pcrel_offset */ | |
1391 | ||
1392 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1393 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1394 | 32, /* rightshift */ | |
1395 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1396 | 16, /* bitsize */ | |
1397 | FALSE, /* pc_relative */ | |
1398 | 0, /* bitpos */ | |
1399 | complain_overflow_dont, /* complain_on_overflow */ | |
1400 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1401 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1402 | FALSE, /* partial_inplace */ | |
1403 | 0, /* src_mask */ | |
1404 | 0xffff, /* dst_mask */ | |
1405 | FALSE), /* pcrel_offset */ | |
1406 | ||
1407 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1408 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1409 | 32, /* rightshift */ | |
1410 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1411 | 16, /* bitsize */ | |
1412 | FALSE, /* pc_relative */ | |
1413 | 0, /* bitpos */ | |
1414 | complain_overflow_dont, /* complain_on_overflow */ | |
1415 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1416 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1417 | FALSE, /* partial_inplace */ | |
1418 | 0, /* src_mask */ | |
1419 | 0xffff, /* dst_mask */ | |
1420 | FALSE), /* pcrel_offset */ | |
1421 | ||
1422 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1423 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1424 | 48, /* rightshift */ | |
1425 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1426 | 16, /* bitsize */ | |
1427 | FALSE, /* pc_relative */ | |
1428 | 0, /* bitpos */ | |
1429 | complain_overflow_dont, /* complain_on_overflow */ | |
1430 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1431 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1432 | FALSE, /* partial_inplace */ | |
1433 | 0, /* src_mask */ | |
1434 | 0xffff, /* dst_mask */ | |
1435 | FALSE), /* pcrel_offset */ | |
1436 | ||
1437 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1438 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1439 | 48, /* rightshift */ | |
1440 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1441 | 16, /* 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_DTPREL16_HIGHESTA", /* name */ | |
1447 | FALSE, /* partial_inplace */ | |
1448 | 0, /* src_mask */ | |
1449 | 0xffff, /* dst_mask */ | |
1450 | FALSE), /* pcrel_offset */ | |
1451 | ||
1452 | /* Like DTPREL16, but for insns with a DS field. */ | |
1453 | HOWTO (R_PPC64_DTPREL16_DS, | |
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_DTPREL16_DS", /* name */ | |
1462 | FALSE, /* partial_inplace */ | |
1463 | 0, /* src_mask */ | |
1464 | 0xfffc, /* dst_mask */ | |
1465 | FALSE), /* pcrel_offset */ | |
1466 | ||
1467 | /* Like DTPREL16_DS, but no overflow. */ | |
1468 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
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_DTPREL16_LO_DS", /* name */ | |
1477 | FALSE, /* partial_inplace */ | |
1478 | 0, /* src_mask */ | |
1479 | 0xfffc, /* dst_mask */ | |
1480 | FALSE), /* pcrel_offset */ | |
1481 | ||
1482 | /* Computes a tp-relative displacement, the difference between the value of | |
1483 | sym+add and the value of the thread pointer (r13). */ | |
1484 | HOWTO (R_PPC64_TPREL64, | |
1485 | 0, /* rightshift */ | |
1486 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1487 | 64, /* bitsize */ | |
1488 | FALSE, /* pc_relative */ | |
1489 | 0, /* bitpos */ | |
1490 | complain_overflow_dont, /* complain_on_overflow */ | |
1491 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1492 | "R_PPC64_TPREL64", /* name */ | |
1493 | FALSE, /* partial_inplace */ | |
1494 | 0, /* src_mask */ | |
1495 | ONES (64), /* dst_mask */ | |
1496 | FALSE), /* pcrel_offset */ | |
1497 | ||
1498 | /* A 16 bit tprel reloc. */ | |
1499 | HOWTO (R_PPC64_TPREL16, | |
1500 | 0, /* rightshift */ | |
1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 16, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
1505 | complain_overflow_signed, /* complain_on_overflow */ | |
1506 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1507 | "R_PPC64_TPREL16", /* name */ | |
1508 | FALSE, /* partial_inplace */ | |
1509 | 0, /* src_mask */ | |
1510 | 0xffff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | ||
1513 | /* Like TPREL16, but no overflow. */ | |
1514 | HOWTO (R_PPC64_TPREL16_LO, | |
1515 | 0, /* rightshift */ | |
1516 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1517 | 16, /* bitsize */ | |
1518 | FALSE, /* pc_relative */ | |
1519 | 0, /* bitpos */ | |
1520 | complain_overflow_dont, /* complain_on_overflow */ | |
1521 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1522 | "R_PPC64_TPREL16_LO", /* name */ | |
1523 | FALSE, /* partial_inplace */ | |
1524 | 0, /* src_mask */ | |
1525 | 0xffff, /* dst_mask */ | |
1526 | FALSE), /* pcrel_offset */ | |
1527 | ||
1528 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1529 | HOWTO (R_PPC64_TPREL16_HI, | |
1530 | 16, /* rightshift */ | |
1531 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1532 | 16, /* bitsize */ | |
1533 | FALSE, /* pc_relative */ | |
1534 | 0, /* bitpos */ | |
1535 | complain_overflow_dont, /* complain_on_overflow */ | |
1536 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1537 | "R_PPC64_TPREL16_HI", /* name */ | |
1538 | FALSE, /* partial_inplace */ | |
1539 | 0, /* src_mask */ | |
1540 | 0xffff, /* dst_mask */ | |
1541 | FALSE), /* pcrel_offset */ | |
1542 | ||
1543 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1544 | HOWTO (R_PPC64_TPREL16_HA, | |
1545 | 16, /* rightshift */ | |
1546 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1547 | 16, /* bitsize */ | |
1548 | FALSE, /* pc_relative */ | |
1549 | 0, /* bitpos */ | |
1550 | complain_overflow_dont, /* complain_on_overflow */ | |
1551 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1552 | "R_PPC64_TPREL16_HA", /* name */ | |
1553 | FALSE, /* partial_inplace */ | |
1554 | 0, /* src_mask */ | |
1555 | 0xffff, /* dst_mask */ | |
1556 | FALSE), /* pcrel_offset */ | |
1557 | ||
1558 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1559 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1560 | 32, /* rightshift */ | |
1561 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1562 | 16, /* bitsize */ | |
1563 | FALSE, /* pc_relative */ | |
1564 | 0, /* bitpos */ | |
1565 | complain_overflow_dont, /* complain_on_overflow */ | |
1566 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1567 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1568 | FALSE, /* partial_inplace */ | |
1569 | 0, /* src_mask */ | |
1570 | 0xffff, /* dst_mask */ | |
1571 | FALSE), /* pcrel_offset */ | |
1572 | ||
1573 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1574 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1575 | 32, /* rightshift */ | |
1576 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1577 | 16, /* bitsize */ | |
1578 | FALSE, /* pc_relative */ | |
1579 | 0, /* bitpos */ | |
1580 | complain_overflow_dont, /* complain_on_overflow */ | |
1581 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1582 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1583 | FALSE, /* partial_inplace */ | |
1584 | 0, /* src_mask */ | |
1585 | 0xffff, /* dst_mask */ | |
1586 | FALSE), /* pcrel_offset */ | |
1587 | ||
1588 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1589 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1590 | 48, /* rightshift */ | |
1591 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1592 | 16, /* bitsize */ | |
1593 | FALSE, /* pc_relative */ | |
1594 | 0, /* bitpos */ | |
1595 | complain_overflow_dont, /* complain_on_overflow */ | |
1596 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1597 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1598 | FALSE, /* partial_inplace */ | |
1599 | 0, /* src_mask */ | |
1600 | 0xffff, /* dst_mask */ | |
1601 | FALSE), /* pcrel_offset */ | |
1602 | ||
1603 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1604 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1605 | 48, /* rightshift */ | |
1606 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1607 | 16, /* bitsize */ | |
1608 | FALSE, /* pc_relative */ | |
1609 | 0, /* bitpos */ | |
1610 | complain_overflow_dont, /* complain_on_overflow */ | |
1611 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1612 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1613 | FALSE, /* partial_inplace */ | |
1614 | 0, /* src_mask */ | |
1615 | 0xffff, /* dst_mask */ | |
1616 | FALSE), /* pcrel_offset */ | |
1617 | ||
1618 | /* Like TPREL16, but for insns with a DS field. */ | |
1619 | HOWTO (R_PPC64_TPREL16_DS, | |
1620 | 0, /* rightshift */ | |
1621 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1622 | 16, /* bitsize */ | |
1623 | FALSE, /* pc_relative */ | |
1624 | 0, /* bitpos */ | |
1625 | complain_overflow_signed, /* complain_on_overflow */ | |
1626 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1627 | "R_PPC64_TPREL16_DS", /* name */ | |
1628 | FALSE, /* partial_inplace */ | |
1629 | 0, /* src_mask */ | |
1630 | 0xfffc, /* dst_mask */ | |
1631 | FALSE), /* pcrel_offset */ | |
1632 | ||
1633 | /* Like TPREL16_DS, but no overflow. */ | |
1634 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1635 | 0, /* rightshift */ | |
1636 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1637 | 16, /* bitsize */ | |
1638 | FALSE, /* pc_relative */ | |
1639 | 0, /* bitpos */ | |
1640 | complain_overflow_dont, /* complain_on_overflow */ | |
1641 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1642 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1643 | FALSE, /* partial_inplace */ | |
1644 | 0, /* src_mask */ | |
1645 | 0xfffc, /* dst_mask */ | |
1646 | FALSE), /* pcrel_offset */ | |
1647 | ||
1648 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1649 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1650 | to the first entry relative to the TOC base (r2). */ | |
1651 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1652 | 0, /* rightshift */ | |
1653 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1654 | 16, /* bitsize */ | |
1655 | FALSE, /* pc_relative */ | |
1656 | 0, /* bitpos */ | |
1657 | complain_overflow_signed, /* complain_on_overflow */ | |
1658 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1659 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1660 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1661 | 0, /* src_mask */ |
1662 | 0xffff, /* dst_mask */ | |
b34976b6 | 1663 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1664 | |
411e1bfb AM |
1665 | /* Like GOT_TLSGD16, but no overflow. */ |
1666 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1667 | 0, /* rightshift */ |
1668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1669 | 16, /* bitsize */ | |
b34976b6 | 1670 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1671 | 0, /* bitpos */ |
1672 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1673 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1674 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1675 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1676 | 0, /* src_mask */ |
1677 | 0xffff, /* dst_mask */ | |
b34976b6 | 1678 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1679 | |
411e1bfb AM |
1680 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1681 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1682 | 16, /* rightshift */ |
1683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1684 | 16, /* bitsize */ | |
b34976b6 | 1685 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1686 | 0, /* bitpos */ |
1687 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1688 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1689 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1690 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1691 | 0, /* src_mask */ |
1692 | 0xffff, /* dst_mask */ | |
b34976b6 | 1693 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1694 | |
411e1bfb AM |
1695 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1696 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1697 | 16, /* rightshift */ |
1698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1699 | 16, /* bitsize */ | |
b34976b6 | 1700 | FALSE, /* pc_relative */ |
5bd4f169 | 1701 | 0, /* bitpos */ |
411e1bfb | 1702 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1703 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1704 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1705 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1706 | 0, /* src_mask */ |
1707 | 0xffff, /* dst_mask */ | |
b34976b6 | 1708 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1709 | |
411e1bfb AM |
1710 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1711 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1712 | first entry relative to the TOC base (r2). */ | |
1713 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1714 | 0, /* rightshift */ |
1715 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1716 | 16, /* bitsize */ | |
b34976b6 | 1717 | FALSE, /* pc_relative */ |
5bd4f169 | 1718 | 0, /* bitpos */ |
411e1bfb AM |
1719 | complain_overflow_signed, /* complain_on_overflow */ |
1720 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1721 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1722 | FALSE, /* partial_inplace */ |
d006db6c | 1723 | 0, /* src_mask */ |
411e1bfb | 1724 | 0xffff, /* dst_mask */ |
b34976b6 | 1725 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1726 | |
411e1bfb AM |
1727 | /* Like GOT_TLSLD16, but no overflow. */ |
1728 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
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 AM |
1734 | complain_overflow_dont, /* complain_on_overflow */ |
1735 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1736 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1737 | FALSE, /* partial_inplace */ |
d006db6c | 1738 | 0, /* src_mask */ |
411e1bfb | 1739 | 0xffff, /* dst_mask */ |
b34976b6 | 1740 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1741 | |
411e1bfb AM |
1742 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1743 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1744 | 16, /* rightshift */ | |
5bd4f169 AM |
1745 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1746 | 16, /* bitsize */ | |
b34976b6 | 1747 | FALSE, /* pc_relative */ |
5bd4f169 | 1748 | 0, /* bitpos */ |
411e1bfb | 1749 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1750 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1751 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1752 | FALSE, /* partial_inplace */ |
d006db6c | 1753 | 0, /* src_mask */ |
411e1bfb | 1754 | 0xffff, /* dst_mask */ |
b34976b6 | 1755 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1756 | |
411e1bfb AM |
1757 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1758 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
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 */ | |
805fc799 | 1765 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1766 | "R_PPC64_GOT_TLSLD16_HA", /* 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 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1773 | the offset to the entry relative to the TOC base (r2). */ | |
1774 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1775 | 0, /* rightshift */ |
1776 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1777 | 16, /* bitsize */ | |
b34976b6 | 1778 | FALSE, /* pc_relative */ |
5bd4f169 | 1779 | 0, /* bitpos */ |
411e1bfb | 1780 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1781 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1782 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1783 | FALSE, /* partial_inplace */ |
d006db6c | 1784 | 0, /* src_mask */ |
5bd4f169 | 1785 | 0xfffc, /* dst_mask */ |
b34976b6 | 1786 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1787 | |
411e1bfb AM |
1788 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1789 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1790 | 0, /* rightshift */ |
c061c2d8 AM |
1791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1792 | 16, /* bitsize */ | |
b34976b6 | 1793 | FALSE, /* pc_relative */ |
5bd4f169 | 1794 | 0, /* bitpos */ |
411e1bfb AM |
1795 | complain_overflow_dont, /* complain_on_overflow */ |
1796 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1797 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1798 | FALSE, /* partial_inplace */ |
d006db6c | 1799 | 0, /* src_mask */ |
c061c2d8 | 1800 | 0xfffc, /* dst_mask */ |
b34976b6 | 1801 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1802 | |
411e1bfb AM |
1803 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1804 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1805 | 16, /* rightshift */ | |
5bd4f169 AM |
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_DTPREL16_HI", /* name */ | |
b34976b6 | 1813 | FALSE, /* partial_inplace */ |
d006db6c | 1814 | 0, /* src_mask */ |
411e1bfb | 1815 | 0xffff, /* dst_mask */ |
b34976b6 | 1816 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1817 | |
411e1bfb AM |
1818 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1819 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1820 | 16, /* rightshift */ | |
1821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1822 | 16, /* bitsize */ | |
1823 | FALSE, /* pc_relative */ | |
1824 | 0, /* bitpos */ | |
1825 | complain_overflow_dont, /* complain_on_overflow */ | |
1826 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1827 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1828 | FALSE, /* partial_inplace */ | |
1829 | 0, /* src_mask */ | |
1830 | 0xffff, /* dst_mask */ | |
1831 | FALSE), /* pcrel_offset */ | |
1832 | ||
1833 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1834 | offset to the entry relative to the TOC base (r2). */ | |
1835 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1836 | 0, /* rightshift */ |
1837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1838 | 16, /* bitsize */ | |
b34976b6 | 1839 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1840 | 0, /* bitpos */ |
1841 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1842 | ppc64_elf_unhandled_reloc, /* special_function */ |
1843 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1844 | FALSE, /* partial_inplace */ |
d006db6c | 1845 | 0, /* src_mask */ |
ad8e1ba5 | 1846 | 0xfffc, /* dst_mask */ |
b34976b6 | 1847 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1848 | |
411e1bfb AM |
1849 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1850 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1851 | 0, /* rightshift */ |
1852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1853 | 16, /* bitsize */ | |
b34976b6 | 1854 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1855 | 0, /* bitpos */ |
1856 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1857 | ppc64_elf_unhandled_reloc, /* special_function */ |
1858 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1859 | FALSE, /* partial_inplace */ |
d006db6c | 1860 | 0, /* src_mask */ |
ad8e1ba5 | 1861 | 0xfffc, /* dst_mask */ |
b34976b6 | 1862 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1863 | |
411e1bfb AM |
1864 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1865 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1866 | 16, /* rightshift */ | |
5bd4f169 AM |
1867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1868 | 16, /* bitsize */ | |
b34976b6 | 1869 | FALSE, /* pc_relative */ |
5bd4f169 | 1870 | 0, /* bitpos */ |
411e1bfb | 1871 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1872 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1873 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1874 | FALSE, /* partial_inplace */ |
d006db6c | 1875 | 0, /* src_mask */ |
411e1bfb | 1876 | 0xffff, /* dst_mask */ |
b34976b6 | 1877 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1878 | |
411e1bfb AM |
1879 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1880 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1881 | 16, /* rightshift */ | |
5bd4f169 AM |
1882 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1883 | 16, /* bitsize */ | |
b34976b6 | 1884 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1885 | 0, /* bitpos */ |
1886 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1887 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1888 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1889 | FALSE, /* partial_inplace */ |
d006db6c | 1890 | 0, /* src_mask */ |
411e1bfb | 1891 | 0xffff, /* dst_mask */ |
b34976b6 | 1892 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1893 | |
25f23106 AM |
1894 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1895 | 0, /* rightshift */ | |
1896 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1897 | 0, /* bitsize */ | |
1898 | FALSE, /* pc_relative */ | |
1899 | 0, /* bitpos */ | |
1900 | complain_overflow_dont, /* complain_on_overflow */ | |
1901 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1902 | "R_PPC64_JMP_IREL", /* name */ | |
1903 | FALSE, /* partial_inplace */ | |
1904 | 0, /* src_mask */ | |
1905 | 0, /* dst_mask */ | |
1906 | FALSE), /* pcrel_offset */ | |
1907 | ||
e054468f AM |
1908 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1909 | 0, /* rightshift */ | |
1910 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1911 | 64, /* bitsize */ | |
1912 | FALSE, /* pc_relative */ | |
1913 | 0, /* bitpos */ | |
1914 | complain_overflow_dont, /* complain_on_overflow */ | |
1915 | bfd_elf_generic_reloc, /* special_function */ | |
1916 | "R_PPC64_IRELATIVE", /* name */ | |
1917 | FALSE, /* partial_inplace */ | |
1918 | 0, /* src_mask */ | |
1919 | ONES (64), /* dst_mask */ | |
1920 | FALSE), /* pcrel_offset */ | |
1921 | ||
25f23106 AM |
1922 | /* A 16 bit relative relocation. */ |
1923 | HOWTO (R_PPC64_REL16, /* type */ | |
1924 | 0, /* rightshift */ | |
1925 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1926 | 16, /* bitsize */ | |
1927 | TRUE, /* pc_relative */ | |
1928 | 0, /* bitpos */ | |
1929 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1930 | bfd_elf_generic_reloc, /* special_function */ | |
1931 | "R_PPC64_REL16", /* name */ | |
1932 | FALSE, /* partial_inplace */ | |
1933 | 0, /* src_mask */ | |
1934 | 0xffff, /* dst_mask */ | |
1935 | TRUE), /* pcrel_offset */ | |
1936 | ||
1937 | /* A 16 bit relative relocation without overflow. */ | |
1938 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
1939 | 0, /* rightshift */ | |
1940 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1941 | 16, /* bitsize */ | |
1942 | TRUE, /* pc_relative */ | |
1943 | 0, /* bitpos */ | |
1944 | complain_overflow_dont,/* complain_on_overflow */ | |
1945 | bfd_elf_generic_reloc, /* special_function */ | |
1946 | "R_PPC64_REL16_LO", /* name */ | |
1947 | FALSE, /* partial_inplace */ | |
1948 | 0, /* src_mask */ | |
1949 | 0xffff, /* dst_mask */ | |
1950 | TRUE), /* pcrel_offset */ | |
1951 | ||
1952 | /* The high order 16 bits of a relative address. */ | |
1953 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
1954 | 16, /* rightshift */ | |
1955 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1956 | 16, /* bitsize */ | |
1957 | TRUE, /* pc_relative */ | |
1958 | 0, /* bitpos */ | |
1959 | complain_overflow_dont, /* complain_on_overflow */ | |
1960 | bfd_elf_generic_reloc, /* special_function */ | |
1961 | "R_PPC64_REL16_HI", /* name */ | |
1962 | FALSE, /* partial_inplace */ | |
1963 | 0, /* src_mask */ | |
1964 | 0xffff, /* dst_mask */ | |
1965 | TRUE), /* pcrel_offset */ | |
1966 | ||
1967 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
1968 | the low 16 bits, treated as a signed number, is negative. */ | |
1969 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
1970 | 16, /* rightshift */ | |
1971 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1972 | 16, /* bitsize */ | |
1973 | TRUE, /* pc_relative */ | |
1974 | 0, /* bitpos */ | |
1975 | complain_overflow_dont, /* complain_on_overflow */ | |
1976 | ppc64_elf_ha_reloc, /* special_function */ | |
1977 | "R_PPC64_REL16_HA", /* name */ | |
1978 | FALSE, /* partial_inplace */ | |
1979 | 0, /* src_mask */ | |
1980 | 0xffff, /* dst_mask */ | |
1981 | TRUE), /* pcrel_offset */ | |
1982 | ||
5bd4f169 AM |
1983 | /* GNU extension to record C++ vtable hierarchy. */ |
1984 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1985 | 0, /* rightshift */ | |
1986 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1987 | 0, /* bitsize */ | |
b34976b6 | 1988 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1989 | 0, /* bitpos */ |
1990 | complain_overflow_dont, /* complain_on_overflow */ | |
1991 | NULL, /* special_function */ | |
1992 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1993 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1994 | 0, /* src_mask */ |
1995 | 0, /* dst_mask */ | |
b34976b6 | 1996 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1997 | |
1998 | /* GNU extension to record C++ vtable member usage. */ | |
1999 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2000 | 0, /* rightshift */ | |
2001 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2002 | 0, /* bitsize */ | |
b34976b6 | 2003 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2004 | 0, /* bitpos */ |
2005 | complain_overflow_dont, /* complain_on_overflow */ | |
2006 | NULL, /* special_function */ | |
2007 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2008 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2009 | 0, /* src_mask */ |
2010 | 0, /* dst_mask */ | |
b34976b6 | 2011 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2012 | }; |
2013 | ||
2014 | \f | |
2015 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2016 | be done. */ | |
2017 | ||
2018 | static void | |
4ce794b7 | 2019 | ppc_howto_init (void) |
5bd4f169 AM |
2020 | { |
2021 | unsigned int i, type; | |
2022 | ||
2023 | for (i = 0; | |
2024 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2025 | i++) | |
2026 | { | |
2027 | type = ppc64_elf_howto_raw[i].type; | |
2028 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2029 | / sizeof (ppc64_elf_howto_table[0]))); | |
2030 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | static reloc_howto_type * | |
4ce794b7 AM |
2035 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
2036 | bfd_reloc_code_real_type code) | |
5bd4f169 | 2037 | { |
411e1bfb | 2038 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2039 | |
2040 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2041 | /* Initialize howto table if needed. */ | |
2042 | ppc_howto_init (); | |
2043 | ||
4ce794b7 | 2044 | switch (code) |
5bd4f169 AM |
2045 | { |
2046 | default: | |
4ce794b7 | 2047 | return NULL; |
5bd4f169 | 2048 | |
411e1bfb AM |
2049 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2050 | break; | |
2051 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2054 | break; | |
2055 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2056 | break; | |
2057 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2058 | break; | |
2059 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2060 | break; | |
2061 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 2062 | break; |
411e1bfb | 2063 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2064 | break; |
411e1bfb | 2065 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2066 | break; |
411e1bfb | 2067 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2068 | break; |
411e1bfb | 2069 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2070 | break; |
411e1bfb | 2071 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2072 | break; |
411e1bfb | 2073 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2074 | break; |
411e1bfb | 2075 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2076 | break; |
411e1bfb | 2077 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2078 | break; |
411e1bfb | 2079 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2080 | break; |
411e1bfb | 2081 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2082 | break; |
411e1bfb | 2083 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2084 | break; |
411e1bfb | 2085 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2086 | break; |
411e1bfb | 2087 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2088 | break; |
411e1bfb | 2089 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2090 | break; |
411e1bfb | 2091 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2092 | break; |
411e1bfb | 2093 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2094 | break; |
411e1bfb | 2095 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2096 | break; |
411e1bfb | 2097 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2098 | break; |
411e1bfb | 2099 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2100 | break; |
411e1bfb | 2101 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2102 | break; |
411e1bfb | 2103 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2104 | break; |
411e1bfb | 2105 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2106 | break; |
411e1bfb | 2107 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2108 | break; |
411e1bfb | 2109 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2110 | break; |
411e1bfb | 2111 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2112 | break; |
411e1bfb | 2113 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2114 | break; |
411e1bfb | 2115 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2116 | break; |
411e1bfb | 2117 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2118 | break; |
411e1bfb | 2119 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2120 | break; |
411e1bfb | 2121 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2122 | break; |
411e1bfb | 2123 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2124 | break; |
411e1bfb | 2125 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2126 | break; |
411e1bfb | 2127 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2128 | break; |
411e1bfb | 2129 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2130 | break; |
411e1bfb | 2131 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2132 | break; |
411e1bfb | 2133 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2134 | break; |
411e1bfb | 2135 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2136 | break; |
411e1bfb | 2137 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2138 | break; |
411e1bfb | 2139 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2140 | break; |
411e1bfb | 2141 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2142 | break; |
411e1bfb | 2143 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2144 | break; |
411e1bfb | 2145 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2146 | break; |
411e1bfb | 2147 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2148 | break; |
411e1bfb | 2149 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2150 | break; |
411e1bfb | 2151 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2152 | break; |
411e1bfb | 2153 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2154 | break; |
411e1bfb | 2155 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2156 | break; |
411e1bfb | 2157 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2158 | break; |
411e1bfb | 2159 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2160 | break; |
411e1bfb | 2161 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2162 | break; |
411e1bfb | 2163 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2164 | break; |
411e1bfb | 2165 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2166 | break; |
411e1bfb | 2167 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2168 | break; |
727fc41e AM |
2169 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2170 | break; | |
2171 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2172 | break; | |
411e1bfb | 2173 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2174 | break; |
411e1bfb | 2175 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2176 | break; |
411e1bfb | 2177 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2178 | break; |
411e1bfb | 2179 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2180 | break; |
411e1bfb | 2181 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2182 | break; |
411e1bfb | 2183 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2184 | break; |
411e1bfb AM |
2185 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2186 | break; | |
2187 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2188 | break; | |
2189 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2190 | break; | |
2191 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2192 | break; | |
2193 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2194 | break; | |
2195 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2196 | break; | |
2197 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2198 | break; | |
2199 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2200 | break; | |
2201 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2202 | break; | |
2203 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2204 | break; | |
2205 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2206 | break; | |
2207 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2208 | break; | |
2209 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2210 | break; | |
2211 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2212 | break; | |
2213 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2214 | break; | |
2215 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2216 | break; | |
2217 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2218 | break; | |
2219 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2220 | break; | |
2221 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2222 | break; | |
2223 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2224 | break; | |
2225 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2226 | break; | |
2227 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2228 | break; | |
2229 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2230 | break; | |
2231 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2232 | break; | |
2233 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2234 | break; | |
2235 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2236 | break; | |
2237 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2238 | break; | |
2239 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2240 | break; | |
2241 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2242 | break; | |
2243 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2244 | break; | |
2245 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2246 | break; | |
2247 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2248 | break; | |
2249 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2250 | break; | |
25f23106 AM |
2251 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2252 | break; | |
2253 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2254 | break; | |
2255 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2256 | break; | |
2257 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2258 | break; | |
411e1bfb AM |
2259 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2260 | break; | |
2261 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2262 | break; |
2263 | } | |
2264 | ||
4ce794b7 | 2265 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2266 | }; |
2267 | ||
157090f7 AM |
2268 | static reloc_howto_type * |
2269 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2270 | const char *r_name) | |
2271 | { | |
2272 | unsigned int i; | |
2273 | ||
2274 | for (i = 0; | |
2275 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
2276 | i++) | |
2277 | if (ppc64_elf_howto_raw[i].name != NULL | |
2278 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2279 | return &ppc64_elf_howto_raw[i]; | |
2280 | ||
2281 | return NULL; | |
2282 | } | |
2283 | ||
5bd4f169 AM |
2284 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2285 | ||
2286 | static void | |
4ce794b7 AM |
2287 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2288 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2289 | { |
65f38f15 AM |
2290 | unsigned int type; |
2291 | ||
ef60b7ff | 2292 | /* Initialize howto table if needed. */ |
5bd4f169 | 2293 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2294 | ppc_howto_init (); |
2295 | ||
65f38f15 | 2296 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2297 | if (type >= (sizeof (ppc64_elf_howto_table) |
2298 | / sizeof (ppc64_elf_howto_table[0]))) | |
2299 | { | |
2300 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2301 | abfd, (int) type); |
2302 | type = R_PPC64_NONE; | |
d0fb9a8d | 2303 | } |
65f38f15 | 2304 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2305 | } |
2306 | ||
04c9666a | 2307 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2308 | |
2309 | static bfd_reloc_status_type | |
4ce794b7 AM |
2310 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2311 | void *data, asection *input_section, | |
2312 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2313 | { |
805fc799 AM |
2314 | /* If this is a relocatable link (output_bfd test tells us), just |
2315 | call the generic function. Any adjustment will be done at final | |
2316 | link time. */ | |
2317 | if (output_bfd != NULL) | |
cedb70c5 | 2318 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2319 | input_section, output_bfd, error_message); |
2320 | ||
2321 | /* Adjust the addend for sign extension of the low 16 bits. | |
2322 | We won't actually be using the low 16 bits, so trashing them | |
2323 | doesn't matter. */ | |
2324 | reloc_entry->addend += 0x8000; | |
2325 | return bfd_reloc_continue; | |
2326 | } | |
5bd4f169 | 2327 | |
2441e016 AM |
2328 | static bfd_reloc_status_type |
2329 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2330 | void *data, asection *input_section, | |
2331 | bfd *output_bfd, char **error_message) | |
2332 | { | |
2333 | if (output_bfd != NULL) | |
2334 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2335 | input_section, output_bfd, error_message); | |
2336 | ||
699733f6 AM |
2337 | if (strcmp (symbol->section->name, ".opd") == 0 |
2338 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2339 | { |
2340 | bfd_vma dest = opd_entry_value (symbol->section, | |
2341 | symbol->value + reloc_entry->addend, | |
2342 | NULL, NULL); | |
2343 | if (dest != (bfd_vma) -1) | |
2344 | reloc_entry->addend = dest - (symbol->value | |
2345 | + symbol->section->output_section->vma | |
2346 | + symbol->section->output_offset); | |
2347 | } | |
2348 | return bfd_reloc_continue; | |
2349 | } | |
2350 | ||
805fc799 | 2351 | static bfd_reloc_status_type |
4ce794b7 AM |
2352 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2353 | void *data, asection *input_section, | |
2354 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2355 | { |
2356 | long insn; | |
04c9666a | 2357 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2358 | bfd_size_type octets; |
2359 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2360 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2361 | |
2362 | /* If this is a relocatable link (output_bfd test tells us), just | |
2363 | call the generic function. Any adjustment will be done at final | |
2364 | link time. */ | |
5bd4f169 | 2365 | if (output_bfd != NULL) |
cedb70c5 | 2366 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2367 | input_section, output_bfd, error_message); |
2368 | ||
2369 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2370 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2371 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2372 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2373 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2374 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2375 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2376 | |
2377 | if (is_power4) | |
5bd4f169 | 2378 | { |
805fc799 AM |
2379 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2380 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2381 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2382 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2383 | insn |= 0x02 << 21; | |
2384 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2385 | insn |= 0x08 << 21; | |
2386 | else | |
2441e016 | 2387 | goto out; |
5bd4f169 | 2388 | } |
805fc799 AM |
2389 | else |
2390 | { | |
2391 | bfd_vma target = 0; | |
2392 | bfd_vma from; | |
5bd4f169 | 2393 | |
805fc799 AM |
2394 | if (!bfd_is_com_section (symbol->section)) |
2395 | target = symbol->value; | |
2396 | target += symbol->section->output_section->vma; | |
2397 | target += symbol->section->output_offset; | |
2398 | target += reloc_entry->addend; | |
5bd4f169 | 2399 | |
805fc799 AM |
2400 | from = (reloc_entry->address |
2401 | + input_section->output_offset | |
2402 | + input_section->output_section->vma); | |
5bd4f169 | 2403 | |
805fc799 AM |
2404 | /* Invert 'y' bit if not the default. */ |
2405 | if ((bfd_signed_vma) (target - from) < 0) | |
2406 | insn ^= 0x01 << 21; | |
2407 | } | |
4ce794b7 | 2408 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2409 | out: |
2410 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2411 | input_section, output_bfd, error_message); | |
805fc799 | 2412 | } |
5bd4f169 | 2413 | |
805fc799 | 2414 | static bfd_reloc_status_type |
4ce794b7 AM |
2415 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2416 | void *data, asection *input_section, | |
2417 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2418 | { |
2419 | /* If this is a relocatable link (output_bfd test tells us), just | |
2420 | call the generic function. Any adjustment will be done at final | |
2421 | link time. */ | |
2422 | if (output_bfd != NULL) | |
cedb70c5 | 2423 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2424 | input_section, output_bfd, error_message); |
5bd4f169 | 2425 | |
805fc799 AM |
2426 | /* Subtract the symbol section base address. */ |
2427 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2428 | return bfd_reloc_continue; |
2429 | } | |
2430 | ||
805fc799 | 2431 | static bfd_reloc_status_type |
4ce794b7 AM |
2432 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2433 | void *data, asection *input_section, | |
2434 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2435 | { |
2436 | /* If this is a relocatable link (output_bfd test tells us), just | |
2437 | call the generic function. Any adjustment will be done at final | |
2438 | link time. */ | |
2439 | if (output_bfd != NULL) | |
cedb70c5 | 2440 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2441 | input_section, output_bfd, error_message); |
2442 | ||
2443 | /* Subtract the symbol section base address. */ | |
2444 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2445 | ||
2446 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2447 | reloc_entry->addend += 0x8000; | |
2448 | return bfd_reloc_continue; | |
2449 | } | |
2450 | ||
2451 | static bfd_reloc_status_type | |
4ce794b7 AM |
2452 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2453 | void *data, asection *input_section, | |
2454 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2455 | { |
2456 | bfd_vma TOCstart; | |
2457 | ||
2458 | /* If this is a relocatable link (output_bfd test tells us), just | |
2459 | call the generic function. Any adjustment will be done at final | |
2460 | link time. */ | |
2461 | if (output_bfd != NULL) | |
cedb70c5 | 2462 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2463 | input_section, output_bfd, error_message); |
2464 | ||
2465 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2466 | if (TOCstart == 0) | |
2467 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2468 | ||
2469 | /* Subtract the TOC base address. */ | |
2470 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2471 | return bfd_reloc_continue; | |
2472 | } | |
2473 | ||
2474 | static bfd_reloc_status_type | |
4ce794b7 AM |
2475 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2476 | void *data, asection *input_section, | |
2477 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2478 | { |
2479 | bfd_vma TOCstart; | |
2480 | ||
2481 | /* If this is a relocatable link (output_bfd test tells us), just | |
2482 | call the generic function. Any adjustment will be done at final | |
2483 | link time. */ | |
2484 | if (output_bfd != NULL) | |
cedb70c5 | 2485 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2486 | input_section, output_bfd, error_message); |
2487 | ||
2488 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2489 | if (TOCstart == 0) | |
2490 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2491 | ||
2492 | /* Subtract the TOC base address. */ | |
2493 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2494 | ||
2495 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2496 | reloc_entry->addend += 0x8000; | |
2497 | return bfd_reloc_continue; | |
2498 | } | |
2499 | ||
2500 | static bfd_reloc_status_type | |
4ce794b7 AM |
2501 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2502 | void *data, asection *input_section, | |
2503 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2504 | { |
2505 | bfd_vma TOCstart; | |
2506 | bfd_size_type octets; | |
2507 | ||
2508 | /* If this is a relocatable link (output_bfd test tells us), just | |
2509 | call the generic function. Any adjustment will be done at final | |
2510 | link time. */ | |
2511 | if (output_bfd != NULL) | |
cedb70c5 | 2512 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2513 | input_section, output_bfd, error_message); |
2514 | ||
2515 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2516 | if (TOCstart == 0) | |
2517 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2518 | ||
2519 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2520 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2521 | return bfd_reloc_ok; | |
2522 | } | |
2523 | ||
2524 | static bfd_reloc_status_type | |
4ce794b7 AM |
2525 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2526 | void *data, asection *input_section, | |
2527 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2528 | { |
2529 | /* If this is a relocatable link (output_bfd test tells us), just | |
2530 | call the generic function. Any adjustment will be done at final | |
2531 | link time. */ | |
2532 | if (output_bfd != NULL) | |
cedb70c5 | 2533 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2534 | input_section, output_bfd, error_message); |
2535 | ||
2536 | if (error_message != NULL) | |
2537 | { | |
2538 | static char buf[60]; | |
2539 | sprintf (buf, "generic linker can't handle %s", | |
2540 | reloc_entry->howto->name); | |
2541 | *error_message = buf; | |
2542 | } | |
2543 | return bfd_reloc_dangerous; | |
2544 | } | |
2545 | ||
927be08e AM |
2546 | /* Track GOT entries needed for a given symbol. We might need more |
2547 | than one got entry per symbol. */ | |
2548 | struct got_entry | |
2549 | { | |
2550 | struct got_entry *next; | |
2551 | ||
2552 | /* The symbol addend that we'll be placing in the GOT. */ | |
2553 | bfd_vma addend; | |
2554 | ||
2555 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2556 | symbol referenced from different input files. This is to support | |
2557 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2558 | from one input file to another. After partitioning into TOC groups | |
2559 | we merge entries within the group. | |
2560 | ||
2561 | Point to the BFD owning this GOT entry. */ | |
2562 | bfd *owner; | |
2563 | ||
2564 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2565 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2566 | unsigned char tls_type; |
927be08e AM |
2567 | |
2568 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2569 | unsigned char is_indirect; |
927be08e AM |
2570 | |
2571 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2572 | union | |
2573 | { | |
2574 | bfd_signed_vma refcount; | |
2575 | bfd_vma offset; | |
2576 | struct got_entry *ent; | |
2577 | } got; | |
2578 | }; | |
2579 | ||
2580 | /* The same for PLT. */ | |
2581 | struct plt_entry | |
2582 | { | |
2583 | struct plt_entry *next; | |
2584 | ||
2585 | bfd_vma addend; | |
2586 | ||
2587 | union | |
2588 | { | |
2589 | bfd_signed_vma refcount; | |
2590 | bfd_vma offset; | |
2591 | } plt; | |
2592 | }; | |
2593 | ||
e717da7e AM |
2594 | struct ppc64_elf_obj_tdata |
2595 | { | |
2596 | struct elf_obj_tdata elf; | |
2597 | ||
2598 | /* Shortcuts to dynamic linker sections. */ | |
2599 | asection *got; | |
2600 | asection *relgot; | |
2601 | ||
b3fac117 AM |
2602 | /* Used during garbage collection. We attach global symbols defined |
2603 | on removed .opd entries to this section so that the sym is removed. */ | |
2604 | asection *deleted_section; | |
81688140 | 2605 | |
927be08e | 2606 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2607 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2608 | struct got_entry tlsld_got; |
8860955f AM |
2609 | |
2610 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2611 | Elf_Internal_Rela *opd_relocs; | |
d77c8a4b AM |
2612 | |
2613 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2614 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2615 | unsigned int has_small_toc_reloc : 1; |
2616 | ||
2617 | /* Set if toc/got ha relocs detected not using r2. */ | |
2618 | unsigned int ha_relocs_not_using_r2 : 1; | |
e717da7e AM |
2619 | }; |
2620 | ||
2621 | #define ppc64_elf_tdata(bfd) \ | |
2622 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2623 | ||
2624 | #define ppc64_tlsld_got(bfd) \ | |
2625 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2626 | ||
0c8d6e5c AM |
2627 | #define is_ppc64_elf(bfd) \ |
2628 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2629 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2630 | |
e717da7e AM |
2631 | /* Override the generic function because we store some extras. */ |
2632 | ||
2633 | static bfd_boolean | |
2634 | ppc64_elf_mkobject (bfd *abfd) | |
2635 | { | |
0ffa91dd | 2636 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2637 | PPC64_ELF_DATA); |
e717da7e AM |
2638 | } |
2639 | ||
feee612b AM |
2640 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2641 | default is 32 bit. */ | |
2642 | ||
b34976b6 | 2643 | static bfd_boolean |
4ce794b7 | 2644 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2645 | { |
2646 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2647 | { | |
2648 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2649 | ||
2650 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2651 | { | |
2652 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2653 | abfd->arch_info = abfd->arch_info->next; | |
2654 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2655 | } | |
2656 | } | |
b34976b6 | 2657 | return TRUE; |
feee612b AM |
2658 | } |
2659 | ||
d37c89e5 AM |
2660 | /* Support for core dump NOTE sections. */ |
2661 | ||
2662 | static bfd_boolean | |
2663 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2664 | { | |
eea6121a | 2665 | size_t offset, size; |
d37c89e5 AM |
2666 | |
2667 | if (note->descsz != 504) | |
2668 | return FALSE; | |
2669 | ||
2670 | /* pr_cursig */ | |
2671 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2672 | ||
2673 | /* pr_pid */ | |
261b8d08 | 2674 | elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
2675 | |
2676 | /* pr_reg */ | |
2677 | offset = 112; | |
eea6121a | 2678 | size = 384; |
d37c89e5 AM |
2679 | |
2680 | /* Make a ".reg/999" section. */ | |
2681 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2682 | size, note->descpos + offset); |
d37c89e5 AM |
2683 | } |
2684 | ||
2685 | static bfd_boolean | |
2686 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2687 | { | |
2688 | if (note->descsz != 136) | |
2689 | return FALSE; | |
2690 | ||
bc989cdc JK |
2691 | elf_tdata (abfd)->core_pid |
2692 | = bfd_get_32 (abfd, note->descdata + 24); | |
d37c89e5 AM |
2693 | elf_tdata (abfd)->core_program |
2694 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2695 | elf_tdata (abfd)->core_command | |
2696 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2697 | ||
2698 | return TRUE; | |
2699 | } | |
2700 | ||
183e98be AM |
2701 | static char * |
2702 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2703 | ...) | |
2704 | { | |
2705 | switch (note_type) | |
2706 | { | |
2707 | default: | |
2708 | return NULL; | |
2709 | ||
2710 | case NT_PRPSINFO: | |
2711 | { | |
2712 | char data[136]; | |
2713 | va_list ap; | |
2714 | ||
2715 | va_start (ap, note_type); | |
2716 | memset (data, 0, 40); | |
2717 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2718 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2719 | va_end (ap); | |
2720 | return elfcore_write_note (abfd, buf, bufsiz, | |
2721 | "CORE", note_type, data, sizeof (data)); | |
2722 | } | |
2723 | ||
2724 | case NT_PRSTATUS: | |
2725 | { | |
2726 | char data[504]; | |
2727 | va_list ap; | |
2728 | long pid; | |
2729 | int cursig; | |
2730 | const void *greg; | |
2731 | ||
2732 | va_start (ap, note_type); | |
2733 | memset (data, 0, 112); | |
2734 | pid = va_arg (ap, long); | |
2735 | bfd_put_32 (abfd, pid, data + 32); | |
2736 | cursig = va_arg (ap, int); | |
2737 | bfd_put_16 (abfd, cursig, data + 12); | |
2738 | greg = va_arg (ap, const void *); | |
2739 | memcpy (data + 112, greg, 384); | |
2740 | memset (data + 496, 0, 8); | |
2741 | va_end (ap); | |
2742 | return elfcore_write_note (abfd, buf, bufsiz, | |
2743 | "CORE", note_type, data, sizeof (data)); | |
2744 | } | |
2745 | } | |
2746 | } | |
2747 | ||
5d35169e AM |
2748 | /* Add extra PPC sections. */ |
2749 | ||
b35d266b | 2750 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2751 | { |
0112cd26 NC |
2752 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2753 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2754 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2755 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2756 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2757 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2758 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2759 | }; |
2760 | ||
7c8fe5c4 AM |
2761 | enum _ppc64_sec_type { |
2762 | sec_normal = 0, | |
2763 | sec_opd = 1, | |
2764 | sec_toc = 2 | |
2765 | }; | |
2766 | ||
f0abc2a1 AM |
2767 | struct _ppc64_elf_section_data |
2768 | { | |
2769 | struct bfd_elf_section_data elf; | |
411e1bfb | 2770 | |
f0abc2a1 AM |
2771 | union |
2772 | { | |
74f0fb50 AM |
2773 | /* An array with one entry for each opd function descriptor. */ |
2774 | struct _opd_sec_data | |
2775 | { | |
2776 | /* Points to the function code section for local opd entries. */ | |
2777 | asection **func_sec; | |
2778 | ||
2779 | /* After editing .opd, adjust references to opd local syms. */ | |
2780 | long *adjust; | |
2781 | } opd; | |
7c8fe5c4 | 2782 | |
3a71aa26 AM |
2783 | /* An array for toc sections, indexed by offset/8. */ |
2784 | struct _toc_sec_data | |
2785 | { | |
2786 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2787 | unsigned *symndx; | |
2788 | ||
2789 | /* And the relocation addend. */ | |
2790 | bfd_vma *add; | |
2791 | } toc; | |
7c8fe5c4 AM |
2792 | } u; |
2793 | ||
2794 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2795 | |
7c8fe5c4 AM |
2796 | /* Flag set when small branches are detected. Used to |
2797 | select suitable defaults for the stub group size. */ | |
2798 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2799 | }; |
2800 | ||
2801 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2802 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2803 | |
2804 | static bfd_boolean | |
4ce794b7 | 2805 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2806 | { |
f592407e AM |
2807 | if (!sec->used_by_bfd) |
2808 | { | |
2809 | struct _ppc64_elf_section_data *sdata; | |
2810 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2811 | |
f592407e AM |
2812 | sdata = bfd_zalloc (abfd, amt); |
2813 | if (sdata == NULL) | |
2814 | return FALSE; | |
2815 | sec->used_by_bfd = sdata; | |
2816 | } | |
f0abc2a1 AM |
2817 | |
2818 | return _bfd_elf_new_section_hook (abfd, sec); | |
2819 | } | |
4025353c | 2820 | |
74f0fb50 | 2821 | static struct _opd_sec_data * |
4025353c AM |
2822 | get_opd_info (asection * sec) |
2823 | { | |
2824 | if (sec != NULL | |
2825 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2826 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2827 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2828 | return NULL; |
2829 | } | |
90e3cdf2 JJ |
2830 | \f |
2831 | /* Parameters for the qsort hook. */ | |
90e3cdf2 JJ |
2832 | static bfd_boolean synthetic_relocatable; |
2833 | ||
699733f6 | 2834 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2835 | |
2836 | static int | |
2837 | compare_symbols (const void *ap, const void *bp) | |
2838 | { | |
2839 | const asymbol *a = * (const asymbol **) ap; | |
2840 | const asymbol *b = * (const asymbol **) bp; | |
2841 | ||
699733f6 AM |
2842 | /* Section symbols first. */ |
2843 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2844 | return -1; |
699733f6 | 2845 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2846 | return 1; |
2847 | ||
699733f6 | 2848 | /* then .opd symbols. */ |
ffcfec52 AM |
2849 | if (strcmp (a->section->name, ".opd") == 0 |
2850 | && strcmp (b->section->name, ".opd") != 0) | |
90e3cdf2 | 2851 | return -1; |
ffcfec52 AM |
2852 | if (strcmp (a->section->name, ".opd") != 0 |
2853 | && strcmp (b->section->name, ".opd") == 0) | |
90e3cdf2 JJ |
2854 | return 1; |
2855 | ||
699733f6 | 2856 | /* then other code symbols. */ |
90e3cdf2 JJ |
2857 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2858 | == (SEC_CODE | SEC_ALLOC) | |
2859 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2860 | != (SEC_CODE | SEC_ALLOC)) | |
2861 | return -1; | |
2862 | ||
2863 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2864 | != (SEC_CODE | SEC_ALLOC) | |
2865 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2866 | == (SEC_CODE | SEC_ALLOC)) | |
2867 | return 1; | |
2868 | ||
2869 | if (synthetic_relocatable) | |
2870 | { | |
2871 | if (a->section->id < b->section->id) | |
2872 | return -1; | |
2873 | ||
2874 | if (a->section->id > b->section->id) | |
2875 | return 1; | |
2876 | } | |
2877 | ||
2878 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2879 | return -1; | |
2880 | ||
2881 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2882 | return 1; | |
2883 | ||
4d35a0aa AM |
2884 | /* For syms with the same value, prefer strong dynamic global function |
2885 | syms over other syms. */ | |
2886 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2887 | return -1; | |
2888 | ||
2889 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2890 | return 1; | |
2891 | ||
2892 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2893 | return -1; | |
2894 | ||
2895 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2896 | return 1; | |
2897 | ||
2898 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2899 | return -1; | |
2900 | ||
2901 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2902 | return 1; | |
2903 | ||
2904 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2905 | return -1; | |
2906 | ||
2907 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2908 | return 1; | |
2909 | ||
90e3cdf2 JJ |
2910 | return 0; |
2911 | } | |
2912 | ||
699733f6 | 2913 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2914 | |
699733f6 AM |
2915 | static asymbol * |
2916 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2917 | { |
699733f6 | 2918 | long mid; |
90e3cdf2 | 2919 | |
699733f6 AM |
2920 | if (id == -1) |
2921 | { | |
2922 | while (lo < hi) | |
2923 | { | |
2924 | mid = (lo + hi) >> 1; | |
2925 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2926 | lo = mid + 1; | |
2927 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2928 | hi = mid; | |
2929 | else | |
2930 | return syms[mid]; | |
2931 | } | |
2932 | } | |
2933 | else | |
2934 | { | |
2935 | while (lo < hi) | |
2936 | { | |
2937 | mid = (lo + hi) >> 1; | |
2938 | if (syms[mid]->section->id < id) | |
2939 | lo = mid + 1; | |
2940 | else if (syms[mid]->section->id > id) | |
2941 | hi = mid; | |
2942 | else if (syms[mid]->value < value) | |
2943 | lo = mid + 1; | |
2944 | else if (syms[mid]->value > value) | |
2945 | hi = mid; | |
2946 | else | |
2947 | return syms[mid]; | |
2948 | } | |
2949 | } | |
2950 | return NULL; | |
90e3cdf2 JJ |
2951 | } |
2952 | ||
468392fb AM |
2953 | static bfd_boolean |
2954 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2955 | { | |
2956 | bfd_vma vma = *(bfd_vma *) ptr; | |
2957 | return ((section->flags & SEC_ALLOC) != 0 | |
2958 | && section->vma <= vma | |
2959 | && vma < section->vma + section->size); | |
2960 | } | |
2961 | ||
699733f6 | 2962 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
468392fb | 2963 | entry syms. Also generate @plt symbols for the glink branch table. */ |
90e3cdf2 JJ |
2964 | |
2965 | static long | |
a7535cf3 AM |
2966 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2967 | long static_count, asymbol **static_syms, | |
2968 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2969 | asymbol **ret) |
90e3cdf2 JJ |
2970 | { |
2971 | asymbol *s; | |
699733f6 AM |
2972 | long i; |
2973 | long count; | |
90e3cdf2 | 2974 | char *names; |
a7535cf3 | 2975 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2976 | asection *opd; |
90e3cdf2 | 2977 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2978 | asymbol **syms; |
90e3cdf2 JJ |
2979 | |
2980 | *ret = NULL; | |
2981 | ||
2982 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2983 | if (opd == NULL) | |
2984 | return 0; | |
2985 | ||
a7535cf3 | 2986 | symcount = static_count; |
c9727e01 | 2987 | if (!relocatable) |
a7535cf3 | 2988 | symcount += dyn_count; |
90e3cdf2 | 2989 | if (symcount == 0) |
c9727e01 | 2990 | return 0; |
90e3cdf2 | 2991 | |
a7535cf3 AM |
2992 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2993 | if (syms == NULL) | |
7356fed5 | 2994 | return -1; |
a7535cf3 AM |
2995 | |
2996 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2997 | { | |
2998 | /* Use both symbol tables. */ | |
2999 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3000 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
3001 | } | |
3002 | else if (!relocatable && static_count == 0) | |
3003 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3004 | else | |
3005 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
3006 | ||
90e3cdf2 | 3007 | synthetic_relocatable = relocatable; |
595da8c5 | 3008 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 3009 | |
c9727e01 AM |
3010 | if (!relocatable && symcount > 1) |
3011 | { | |
3012 | long j; | |
3013 | /* Trim duplicate syms, since we may have merged the normal and | |
3014 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 3015 | different values, so trim any with the same value. */ |
c9727e01 AM |
3016 | for (i = 1, j = 1; i < symcount; ++i) |
3017 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
3018 | != syms[i]->value + syms[i]->section->vma) | |
3019 | syms[j++] = syms[i]; | |
3020 | symcount = j; | |
3021 | } | |
3022 | ||
699733f6 | 3023 | i = 0; |
ffcfec52 | 3024 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
699733f6 AM |
3025 | ++i; |
3026 | codesecsym = i; | |
90e3cdf2 | 3027 | |
699733f6 AM |
3028 | for (; i < symcount; ++i) |
3029 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3030 | != (SEC_CODE | SEC_ALLOC)) | |
3031 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3032 | break; | |
3033 | codesecsymend = i; | |
90e3cdf2 | 3034 | |
699733f6 AM |
3035 | for (; i < symcount; ++i) |
3036 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3037 | break; | |
3038 | secsymend = i; | |
90e3cdf2 | 3039 | |
699733f6 | 3040 | for (; i < symcount; ++i) |
ffcfec52 | 3041 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
699733f6 AM |
3042 | break; |
3043 | opdsymend = i; | |
90e3cdf2 | 3044 | |
699733f6 AM |
3045 | for (; i < symcount; ++i) |
3046 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3047 | != (SEC_CODE | SEC_ALLOC)) | |
3048 | break; | |
3049 | symcount = i; | |
3050 | ||
c9727e01 | 3051 | count = 0; |
90e3cdf2 | 3052 | |
699733f6 | 3053 | if (relocatable) |
90e3cdf2 | 3054 | { |
699733f6 AM |
3055 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3056 | arelent *r; | |
3057 | size_t size; | |
3058 | long relcount; | |
90e3cdf2 | 3059 | |
468392fb AM |
3060 | if (opdsymend == secsymend) |
3061 | goto done; | |
3062 | ||
699733f6 | 3063 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3064 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3065 | if (relcount == 0) |
c9727e01 | 3066 | goto done; |
90e3cdf2 | 3067 | |
7356fed5 AM |
3068 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3069 | { | |
3070 | count = -1; | |
3071 | goto done; | |
3072 | } | |
3073 | ||
699733f6 | 3074 | size = 0; |
595da8c5 | 3075 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3076 | { |
3077 | asymbol *sym; | |
90e3cdf2 | 3078 | |
595da8c5 | 3079 | while (r < opd->relocation + relcount |
699733f6 AM |
3080 | && r->address < syms[i]->value + opd->vma) |
3081 | ++r; | |
90e3cdf2 | 3082 | |
595da8c5 | 3083 | if (r == opd->relocation + relcount) |
699733f6 | 3084 | break; |
90e3cdf2 | 3085 | |
699733f6 AM |
3086 | if (r->address != syms[i]->value + opd->vma) |
3087 | continue; | |
90e3cdf2 | 3088 | |
699733f6 AM |
3089 | if (r->howto->type != R_PPC64_ADDR64) |
3090 | continue; | |
90e3cdf2 | 3091 | |
699733f6 AM |
3092 | sym = *r->sym_ptr_ptr; |
3093 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3094 | sym->section->id, sym->value + r->addend)) | |
3095 | { | |
3096 | ++count; | |
3097 | size += sizeof (asymbol); | |
3098 | size += strlen (syms[i]->name) + 2; | |
3099 | } | |
3100 | } | |
90e3cdf2 | 3101 | |
699733f6 AM |
3102 | s = *ret = bfd_malloc (size); |
3103 | if (s == NULL) | |
3104 | { | |
7356fed5 | 3105 | count = -1; |
c9727e01 | 3106 | goto done; |
699733f6 | 3107 | } |
90e3cdf2 | 3108 | |
699733f6 | 3109 | names = (char *) (s + count); |
90e3cdf2 | 3110 | |
595da8c5 | 3111 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3112 | { |
699733f6 | 3113 | asymbol *sym; |
90e3cdf2 | 3114 | |
595da8c5 | 3115 | while (r < opd->relocation + relcount |
699733f6 AM |
3116 | && r->address < syms[i]->value + opd->vma) |
3117 | ++r; | |
90e3cdf2 | 3118 | |
595da8c5 | 3119 | if (r == opd->relocation + relcount) |
699733f6 AM |
3120 | break; |
3121 | ||
3122 | if (r->address != syms[i]->value + opd->vma) | |
3123 | continue; | |
3124 | ||
3125 | if (r->howto->type != R_PPC64_ADDR64) | |
3126 | continue; | |
90e3cdf2 | 3127 | |
699733f6 AM |
3128 | sym = *r->sym_ptr_ptr; |
3129 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3130 | sym->section->id, sym->value + r->addend)) | |
3131 | { | |
3132 | size_t len; | |
3133 | ||
3134 | *s = *syms[i]; | |
6ba2a415 | 3135 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3136 | s->section = sym->section; |
3137 | s->value = sym->value + r->addend; | |
3138 | s->name = names; | |
3139 | *names++ = '.'; | |
3140 | len = strlen (syms[i]->name); | |
3141 | memcpy (names, syms[i]->name, len + 1); | |
3142 | names += len + 1; | |
6f610d07 UW |
3143 | /* Have udata.p point back to the original symbol this |
3144 | synthetic symbol was derived from. */ | |
3145 | s->udata.p = syms[i]; | |
699733f6 AM |
3146 | s++; |
3147 | } | |
3148 | } | |
3149 | } | |
3150 | else | |
90e3cdf2 | 3151 | { |
468392fb | 3152 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
699733f6 AM |
3153 | bfd_byte *contents; |
3154 | size_t size; | |
468392fb AM |
3155 | long plt_count = 0; |
3156 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
3157 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3158 | arelent *p; | |
90e3cdf2 | 3159 | |
699733f6 AM |
3160 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
3161 | { | |
3162 | if (contents) | |
c9727e01 AM |
3163 | { |
3164 | free_contents_and_exit: | |
3165 | free (contents); | |
3166 | } | |
7356fed5 | 3167 | count = -1; |
c9727e01 | 3168 | goto done; |
699733f6 | 3169 | } |
90e3cdf2 | 3170 | |
699733f6 AM |
3171 | size = 0; |
3172 | for (i = secsymend; i < opdsymend; ++i) | |
3173 | { | |
3174 | bfd_vma ent; | |
90e3cdf2 | 3175 | |
5ef11c02 AM |
3176 | /* Ignore bogus symbols. */ |
3177 | if (syms[i]->value > opd->size - 8) | |
3178 | continue; | |
3179 | ||
699733f6 AM |
3180 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3181 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3182 | { | |
3183 | ++count; | |
3184 | size += sizeof (asymbol); | |
3185 | size += strlen (syms[i]->name) + 2; | |
3186 | } | |
3187 | } | |
90e3cdf2 | 3188 | |
468392fb | 3189 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3190 | if (dyn_count != 0 |
3191 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3192 | { |
3193 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3194 | size_t extdynsize; | |
3195 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3196 | ||
3197 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
3198 | goto free_contents_and_exit; | |
3199 | ||
3200 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3201 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3202 | ||
3203 | extdyn = dynbuf; | |
3204 | extdynend = extdyn + dynamic->size; | |
3205 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3206 | { | |
3207 | Elf_Internal_Dyn dyn; | |
3208 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3209 | ||
3210 | if (dyn.d_tag == DT_NULL) | |
3211 | break; | |
3212 | ||
3213 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3214 | { | |
3215 | /* The first glink stub starts at offset 32; see comment in | |
3216 | ppc64_elf_finish_dynamic_sections. */ | |
3217 | glink_vma = dyn.d_un.d_val + 32; | |
3218 | /* The .glink section usually does not survive the final | |
3219 | link; search for the section (usually .text) where the | |
3220 | glink stubs now reside. */ | |
3221 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3222 | &glink_vma); | |
3223 | break; | |
3224 | } | |
3225 | } | |
3226 | ||
3227 | free (dynbuf); | |
3228 | } | |
3229 | ||
3230 | if (glink != NULL) | |
3231 | { | |
3232 | /* Determine __glink trampoline by reading the relative branch | |
3233 | from the first glink stub. */ | |
3234 | bfd_byte buf[4]; | |
3235 | if (bfd_get_section_contents (abfd, glink, buf, | |
3236 | glink_vma + 4 - glink->vma, 4)) | |
3237 | { | |
3238 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3239 | insn ^= B_DOT; | |
3240 | if ((insn & ~0x3fffffc) == 0) | |
3241 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
3242 | } | |
3243 | ||
3244 | if (resolv_vma) | |
3245 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3246 | |
066ee829 AM |
3247 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3248 | if (relplt != NULL) | |
3249 | { | |
3250 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3251 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
3252 | goto free_contents_and_exit; | |
468392fb | 3253 | |
066ee829 AM |
3254 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3255 | size += plt_count * sizeof (asymbol); | |
468392fb | 3256 | |
066ee829 AM |
3257 | p = relplt->relocation; |
3258 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3259 | { |
3260 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3261 | if (p->addend != 0) | |
3262 | size += sizeof ("+0x") - 1 + 16; | |
3263 | } | |
066ee829 | 3264 | } |
468392fb AM |
3265 | } |
3266 | ||
699733f6 AM |
3267 | s = *ret = bfd_malloc (size); |
3268 | if (s == NULL) | |
7356fed5 | 3269 | goto free_contents_and_exit; |
90e3cdf2 | 3270 | |
468392fb | 3271 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3272 | |
699733f6 | 3273 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3274 | { |
699733f6 | 3275 | bfd_vma ent; |
90e3cdf2 | 3276 | |
5ef11c02 AM |
3277 | if (syms[i]->value > opd->size - 8) |
3278 | continue; | |
3279 | ||
699733f6 AM |
3280 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3281 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3282 | { |
c9727e01 | 3283 | long lo, hi; |
699733f6 | 3284 | size_t len; |
c9727e01 | 3285 | asection *sec = abfd->sections; |
90e3cdf2 | 3286 | |
699733f6 AM |
3287 | *s = *syms[i]; |
3288 | lo = codesecsym; | |
3289 | hi = codesecsymend; | |
3290 | while (lo < hi) | |
3291 | { | |
c9727e01 | 3292 | long mid = (lo + hi) >> 1; |
699733f6 AM |
3293 | if (syms[mid]->section->vma < ent) |
3294 | lo = mid + 1; | |
3295 | else if (syms[mid]->section->vma > ent) | |
3296 | hi = mid; | |
3297 | else | |
c9727e01 AM |
3298 | { |
3299 | sec = syms[mid]->section; | |
3300 | break; | |
3301 | } | |
699733f6 AM |
3302 | } |
3303 | ||
c9727e01 | 3304 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3305 | sec = syms[lo - 1]->section; |
699733f6 AM |
3306 | |
3307 | for (; sec != NULL; sec = sec->next) | |
3308 | { | |
3309 | if (sec->vma > ent) | |
3310 | break; | |
63524580 JK |
3311 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3312 | info file. */ | |
3313 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3314 | break; |
3315 | if ((sec->flags & SEC_CODE) != 0) | |
3316 | s->section = sec; | |
3317 | } | |
6ba2a415 | 3318 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3319 | s->value = ent - s->section->vma; |
3320 | s->name = names; | |
3321 | *names++ = '.'; | |
3322 | len = strlen (syms[i]->name); | |
3323 | memcpy (names, syms[i]->name, len + 1); | |
3324 | names += len + 1; | |
6f610d07 UW |
3325 | /* Have udata.p point back to the original symbol this |
3326 | synthetic symbol was derived from. */ | |
3327 | s->udata.p = syms[i]; | |
699733f6 | 3328 | s++; |
90e3cdf2 | 3329 | } |
90e3cdf2 | 3330 | } |
699733f6 | 3331 | free (contents); |
468392fb AM |
3332 | |
3333 | if (glink != NULL && relplt != NULL) | |
3334 | { | |
3335 | if (resolv_vma) | |
3336 | { | |
3337 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3338 | memset (s, 0, sizeof *s); |
468392fb | 3339 | s->the_bfd = abfd; |
6ba2a415 | 3340 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3341 | s->section = glink; |
3342 | s->value = resolv_vma - glink->vma; | |
3343 | s->name = names; | |
3344 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3345 | names += sizeof ("__glink_PLTresolve"); | |
3346 | s++; | |
3347 | count++; | |
3348 | } | |
3349 | ||
3350 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3351 | stub rather than on the glink branch table entry. The | |
3352 | objdump disassembler would then use a sensible symbol | |
3353 | name on plt calls. The difficulty in doing so is | |
3354 | a) finding the stubs, and, | |
3355 | b) matching stubs against plt entries, and, | |
3356 | c) there can be multiple stubs for a given plt entry. | |
3357 | ||
3358 | Solving (a) could be done by code scanning, but older | |
3359 | ppc64 binaries used different stubs to current code. | |
3360 | (b) is the tricky one since you need to known the toc | |
3361 | pointer for at least one function that uses a pic stub to | |
3362 | be able to calculate the plt address referenced. | |
3363 | (c) means gdb would need to set multiple breakpoints (or | |
3364 | find the glink branch itself) when setting breakpoints | |
3365 | for pending shared library loads. */ | |
3366 | p = relplt->relocation; | |
3367 | for (i = 0; i < plt_count; i++, p++) | |
3368 | { | |
3369 | size_t len; | |
3370 | ||
3371 | *s = **p->sym_ptr_ptr; | |
3372 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3373 | we are defining a symbol, ensure one of them is set. */ | |
3374 | if ((s->flags & BSF_LOCAL) == 0) | |
3375 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3376 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3377 | s->section = glink; |
3378 | s->value = glink_vma - glink->vma; | |
3379 | s->name = names; | |
3380 | s->udata.p = NULL; | |
3381 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3382 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3383 | names += len; | |
e054468f AM |
3384 | if (p->addend != 0) |
3385 | { | |
3386 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3387 | names += sizeof ("+0x") - 1; | |
3388 | bfd_sprintf_vma (abfd, names, p->addend); | |
3389 | names += strlen (names); | |
3390 | } | |
468392fb AM |
3391 | memcpy (names, "@plt", sizeof ("@plt")); |
3392 | names += sizeof ("@plt"); | |
3393 | s++; | |
3394 | glink_vma += 8; | |
3395 | if (i >= 0x8000) | |
3396 | glink_vma += 4; | |
3397 | } | |
3398 | count += plt_count; | |
3399 | } | |
90e3cdf2 JJ |
3400 | } |
3401 | ||
c9727e01 | 3402 | done: |
a7535cf3 | 3403 | free (syms); |
90e3cdf2 JJ |
3404 | return count; |
3405 | } | |
5bd4f169 | 3406 | \f |
65f38f15 AM |
3407 | /* The following functions are specific to the ELF linker, while |
3408 | functions above are used generally. Those named ppc64_elf_* are | |
3409 | called by the main ELF linker code. They appear in this file more | |
3410 | or less in the order in which they are called. eg. | |
3411 | ppc64_elf_check_relocs is called early in the link process, | |
3412 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3413 | called. |
3414 | ||
3415 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3416 | functions have both a function code symbol and a function descriptor | |
3417 | symbol. A call to foo in a relocatable object file looks like: | |
3418 | ||
3419 | . .text | |
3420 | . x: | |
3421 | . bl .foo | |
3422 | . nop | |
3423 | ||
3424 | The function definition in another object file might be: | |
3425 | ||
3426 | . .section .opd | |
3427 | . foo: .quad .foo | |
3428 | . .quad .TOC.@tocbase | |
3429 | . .quad 0 | |
3430 | . | |
3431 | . .text | |
3432 | . .foo: blr | |
3433 | ||
3434 | When the linker resolves the call during a static link, the branch | |
3435 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3436 | If the function definition is in a shared library, things are a little | |
3437 | different: The call goes via a plt call stub, the opd information gets | |
3438 | copied to the plt, and the linker patches the nop. | |
3439 | ||
3440 | . x: | |
3441 | . bl .foo_stub | |
3442 | . ld 2,40(1) | |
3443 | . | |
3444 | . | |
3445 | . .foo_stub: | |
3446 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3447 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3448 | . std 2,40(1) # this is the general idea |
3449 | . ld 11,0(12) | |
3450 | . ld 2,8(12) | |
3451 | . mtctr 11 | |
3452 | . ld 11,16(12) | |
3453 | . bctr | |
3454 | . | |
3455 | . .section .plt | |
3456 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3457 | ||
3458 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3459 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3460 | copying. | |
3461 | ||
3462 | What are the difficulties here? Well, firstly, the relocations | |
3463 | examined by the linker in check_relocs are against the function code | |
3464 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3465 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3466 | to carefully copy dynamic link information from one symbol to the other. | |
3467 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3468 | symbol as is normal for most other backends. We need foo dynamic | |
3469 | instead, at least for an application final link. However, when | |
3470 | creating a shared library containing foo, we need to have both symbols | |
3471 | dynamic so that references to .foo are satisfied during the early | |
3472 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3473 | definition from some other object, eg. a static library. |
3474 | ||
3475 | Update: As of August 2004, we support a new convention. Function | |
3476 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3477 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3478 | |
1d483afe | 3479 | /* Of those relocs that might be copied as dynamic relocs, this function |
58ac9f71 AM |
3480 | selects those that must be copied when linking a shared library, |
3481 | even when the symbol is local. */ | |
65f38f15 | 3482 | |
1d483afe AM |
3483 | static int |
3484 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3485 | enum elf_ppc64_reloc_type r_type) | |
3486 | { | |
3487 | switch (r_type) | |
3488 | { | |
3489 | default: | |
3490 | return 1; | |
3491 | ||
3492 | case R_PPC64_REL32: | |
3493 | case R_PPC64_REL64: | |
3494 | case R_PPC64_REL30: | |
3495 | return 0; | |
3496 | ||
3497 | case R_PPC64_TPREL16: | |
3498 | case R_PPC64_TPREL16_LO: | |
3499 | case R_PPC64_TPREL16_HI: | |
3500 | case R_PPC64_TPREL16_HA: | |
3501 | case R_PPC64_TPREL16_DS: | |
3502 | case R_PPC64_TPREL16_LO_DS: | |
3503 | case R_PPC64_TPREL16_HIGHER: | |
3504 | case R_PPC64_TPREL16_HIGHERA: | |
3505 | case R_PPC64_TPREL16_HIGHEST: | |
3506 | case R_PPC64_TPREL16_HIGHESTA: | |
3507 | case R_PPC64_TPREL64: | |
3508 | return !info->executable; | |
3509 | } | |
3510 | } | |
65f38f15 | 3511 | |
f4656909 AM |
3512 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3513 | copying dynamic variables from a shared lib into an app's dynbss | |
3514 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3515 | shared lib. With code that gcc generates, it's vital that this be |
3516 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3517 | the address of a function descriptor, which resides in the .opd | |
3518 | section. gcc uses the descriptor directly rather than going via the | |
3519 | GOT as some other ABI's do, which means that initialized function | |
3520 | pointers must reference the descriptor. Thus, a function pointer | |
3521 | initialized to the address of a function in a shared library will | |
3522 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3523 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3524 | presents a problem as a plt entry for that function is also |
3525 | initialized from the function descriptor symbol and the copy reloc | |
3526 | may not be initialized first. */ | |
a23b6845 | 3527 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3528 | |
721956f4 AM |
3529 | /* Section name for stubs is the associated section name plus this |
3530 | string. */ | |
3531 | #define STUB_SUFFIX ".stub" | |
3532 | ||
3533 | /* Linker stubs. | |
3534 | ppc_stub_long_branch: | |
3535 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3536 | destination, but a 24 bit branch in a stub section will reach. | |
3537 | . b dest | |
3538 | ||
3539 | ppc_stub_plt_branch: | |
3540 | Similar to the above, but a 24 bit branch in the stub section won't | |
3541 | reach its destination. | |
87e226ce AM |
3542 | . addis %r12,%r2,xxx@toc@ha |
3543 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3544 | . mtctr %r11 |
3545 | . bctr | |
3546 | ||
3547 | ppc_stub_plt_call: | |
2c66dc6c AM |
3548 | Used to call a function in a shared library. If it so happens that |
3549 | the plt entry referenced crosses a 64k boundary, then an extra | |
ac2df442 | 3550 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
87e226ce | 3551 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3552 | . std %r2,40(%r1) |
87e226ce | 3553 | . ld %r11,xxx+0@toc@l(%r12) |
721956f4 | 3554 | . mtctr %r11 |
ac2df442 | 3555 | . ld %r2,xxx+8@toc@l(%r12) |
87e226ce | 3556 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3557 | . bctr |
ad8e1ba5 AM |
3558 | |
3559 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3560 | code to adjust the value and save r2 to support multiple toc sections. | |
3561 | A ppc_stub_long_branch with an r2 offset looks like: | |
3562 | . std %r2,40(%r1) | |
3563 | . addis %r2,%r2,off@ha | |
3564 | . addi %r2,%r2,off@l | |
3565 | . b dest | |
3566 | ||
3567 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3568 | . std %r2,40(%r1) | |
3569 | . addis %r12,%r2,xxx@toc@ha | |
3570 | . ld %r11,xxx@toc@l(%r12) | |
3571 | . addis %r2,%r2,off@ha | |
3572 | . addi %r2,%r2,off@l | |
3573 | . mtctr %r11 | |
3574 | . bctr | |
ac2df442 AM |
3575 | |
3576 | In cases where the "addis" instruction would add zero, the "addis" is | |
3577 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3578 | */ |
3579 | ||
3580 | enum ppc_stub_type { | |
3581 | ppc_stub_none, | |
3582 | ppc_stub_long_branch, | |
ad8e1ba5 | 3583 | ppc_stub_long_branch_r2off, |
721956f4 | 3584 | ppc_stub_plt_branch, |
ad8e1ba5 | 3585 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3586 | ppc_stub_plt_call |
3587 | }; | |
3588 | ||
3589 | struct ppc_stub_hash_entry { | |
3590 | ||
3591 | /* Base hash table entry structure. */ | |
3592 | struct bfd_hash_entry root; | |
3593 | ||
ad8e1ba5 AM |
3594 | enum ppc_stub_type stub_type; |
3595 | ||
721956f4 AM |
3596 | /* The stub section. */ |
3597 | asection *stub_sec; | |
3598 | ||
3599 | /* Offset within stub_sec of the beginning of this stub. */ | |
3600 | bfd_vma stub_offset; | |
3601 | ||
3602 | /* Given the symbol's value and its section we can determine its final | |
3603 | value when building the stubs (so the stub knows where to jump. */ | |
3604 | bfd_vma target_value; | |
3605 | asection *target_section; | |
3606 | ||
721956f4 AM |
3607 | /* The symbol table entry, if any, that this was derived from. */ |
3608 | struct ppc_link_hash_entry *h; | |
e054468f | 3609 | struct plt_entry *plt_ent; |
721956f4 | 3610 | |
411e1bfb AM |
3611 | /* And the reloc addend that this was derived from. */ |
3612 | bfd_vma addend; | |
3613 | ||
721956f4 AM |
3614 | /* Where this stub is being called from, or, in the case of combined |
3615 | stub sections, the first input section in the group. */ | |
3616 | asection *id_sec; | |
3617 | }; | |
3618 | ||
3619 | struct ppc_branch_hash_entry { | |
3620 | ||
3621 | /* Base hash table entry structure. */ | |
3622 | struct bfd_hash_entry root; | |
3623 | ||
c456f082 | 3624 | /* Offset within branch lookup table. */ |
721956f4 AM |
3625 | unsigned int offset; |
3626 | ||
3627 | /* Generation marker. */ | |
3628 | unsigned int iter; | |
3629 | }; | |
65f38f15 AM |
3630 | |
3631 | struct ppc_link_hash_entry | |
3632 | { | |
3633 | struct elf_link_hash_entry elf; | |
3634 | ||
b3fac117 AM |
3635 | union { |
3636 | /* A pointer to the most recently used stub hash entry against this | |
3637 | symbol. */ | |
3638 | struct ppc_stub_hash_entry *stub_cache; | |
3639 | ||
3640 | /* A pointer to the next symbol starting with a '.' */ | |
3641 | struct ppc_link_hash_entry *next_dot_sym; | |
3642 | } u; | |
721956f4 | 3643 | |
65f38f15 | 3644 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 3645 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 3646 | |
721956f4 | 3647 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3648 | struct ppc_link_hash_entry *oh; |
721956f4 | 3649 | |
e86ce104 AM |
3650 | /* Flag function code and descriptor symbols. */ |
3651 | unsigned int is_func:1; | |
3652 | unsigned int is_func_descriptor:1; | |
908b32fc | 3653 | unsigned int fake:1; |
411e1bfb | 3654 | |
c5614fa4 AM |
3655 | /* Whether global opd/toc sym has been adjusted or not. |
3656 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3657 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3658 | unsigned int adjust_done:1; |
3659 | ||
99877b66 AM |
3660 | /* Set if we twiddled this symbol to weak at some stage. */ |
3661 | unsigned int was_undefined:1; | |
3662 | ||
411e1bfb | 3663 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3664 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3665 | corresponding relocs are encountered during check_relocs. | |
3666 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3667 | indicate the corresponding GOT entry type is not needed. | |
3668 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3669 | a TPREL one. We use a separate flag rather than setting TPREL | |
3670 | just for convenience in distinguishing the two cases. */ | |
3671 | #define TLS_GD 1 /* GD reloc. */ | |
3672 | #define TLS_LD 2 /* LD reloc. */ | |
3673 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3674 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3675 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3676 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3677 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
e054468f | 3678 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
f961d9dd | 3679 | unsigned char tls_mask; |
65f38f15 AM |
3680 | }; |
3681 | ||
3682 | /* ppc64 ELF linker hash table. */ | |
3683 | ||
3684 | struct ppc_link_hash_table | |
3685 | { | |
3686 | struct elf_link_hash_table elf; | |
3687 | ||
721956f4 AM |
3688 | /* The stub hash table. */ |
3689 | struct bfd_hash_table stub_hash_table; | |
3690 | ||
3691 | /* Another hash table for plt_branch stubs. */ | |
3692 | struct bfd_hash_table branch_hash_table; | |
3693 | ||
3b421ab3 AM |
3694 | /* Hash table for function prologue tocsave. */ |
3695 | htab_t tocsave_htab; | |
3696 | ||
721956f4 AM |
3697 | /* Linker stub bfd. */ |
3698 | bfd *stub_bfd; | |
3699 | ||
3700 | /* Linker call-backs. */ | |
4ce794b7 AM |
3701 | asection * (*add_stub_section) (const char *, asection *); |
3702 | void (*layout_sections_again) (void); | |
721956f4 AM |
3703 | |
3704 | /* Array to keep track of which stub sections have been created, and | |
3705 | information on stub grouping. */ | |
3706 | struct map_stub { | |
3707 | /* This is the section to which stubs in the group will be attached. */ | |
3708 | asection *link_sec; | |
3709 | /* The stub section. */ | |
3710 | asection *stub_sec; | |
ad8e1ba5 AM |
3711 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3712 | bfd_vma toc_off; | |
721956f4 AM |
3713 | } *stub_group; |
3714 | ||
ad8e1ba5 AM |
3715 | /* Temp used when calculating TOC pointers. */ |
3716 | bfd_vma toc_curr; | |
bf102f86 AM |
3717 | bfd *toc_bfd; |
3718 | asection *toc_first_sec; | |
ad8e1ba5 | 3719 | |
8f3bab57 AM |
3720 | /* Highest input section id. */ |
3721 | int top_id; | |
3722 | ||
734b6cf9 AM |
3723 | /* Highest output section index. */ |
3724 | int top_index; | |
3725 | ||
b3fac117 AM |
3726 | /* Used when adding symbols. */ |
3727 | struct ppc_link_hash_entry *dot_syms; | |
3728 | ||
734b6cf9 AM |
3729 | /* List of input sections for each output section. */ |
3730 | asection **input_list; | |
721956f4 | 3731 | |
65f38f15 | 3732 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3733 | asection *got; |
4ce794b7 AM |
3734 | asection *plt; |
3735 | asection *relplt; | |
e054468f AM |
3736 | asection *iplt; |
3737 | asection *reliplt; | |
4ce794b7 AM |
3738 | asection *dynbss; |
3739 | asection *relbss; | |
3740 | asection *glink; | |
82bd7b59 | 3741 | asection *sfpr; |
4ce794b7 AM |
3742 | asection *brlt; |
3743 | asection *relbrlt; | |
58d180e8 | 3744 | asection *glink_eh_frame; |
ec338859 | 3745 | |
8387904d AM |
3746 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3747 | struct ppc_link_hash_entry *tls_get_addr; | |
3748 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3749 | |
927be08e AM |
3750 | /* The size of reliplt used by got entry relocs. */ |
3751 | bfd_size_type got_reli_size; | |
3752 | ||
9b5ecbd0 AM |
3753 | /* Statistics. */ |
3754 | unsigned long stub_count[ppc_stub_plt_call]; | |
3755 | ||
ee75fd95 AM |
3756 | /* Number of stubs against global syms. */ |
3757 | unsigned long stub_globals; | |
3758 | ||
9df0ef5f AM |
3759 | /* Set if PLT call stubs should load r11. */ |
3760 | unsigned int plt_static_chain:1; | |
3761 | ||
ad8e1ba5 | 3762 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3763 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3764 | |
a7f2871e AM |
3765 | /* Set if __tls_get_addr optimization should not be done. */ |
3766 | unsigned int no_tls_get_addr_opt:1; | |
3767 | ||
4c52953f | 3768 | /* Support for multiple toc sections. */ |
33c0ec9d | 3769 | unsigned int do_multi_toc:1; |
4c52953f | 3770 | unsigned int multi_toc_needed:1; |
927be08e | 3771 | unsigned int second_toc_pass:1; |
67f0cbdb | 3772 | unsigned int do_toc_opt:1; |
4c52953f | 3773 | |
5d1634d7 | 3774 | /* Set on error. */ |
99877b66 | 3775 | unsigned int stub_error:1; |
721956f4 | 3776 | |
7d9616d7 | 3777 | /* Temp used by ppc64_elf_process_dot_syms. */ |
99877b66 | 3778 | unsigned int twiddled_syms:1; |
721956f4 AM |
3779 | |
3780 | /* Incremented every time we size stubs. */ | |
3781 | unsigned int stub_iteration; | |
5d1634d7 | 3782 | |
87d72d41 AM |
3783 | /* Small local sym cache. */ |
3784 | struct sym_cache sym_cache; | |
65f38f15 AM |
3785 | }; |
3786 | ||
4c52953f AM |
3787 | /* Rename some of the generic section flags to better document how they |
3788 | are used here. */ | |
b0dddeec AM |
3789 | |
3790 | /* Nonzero if this section has TLS related relocations. */ | |
3791 | #define has_tls_reloc sec_flg0 | |
3792 | ||
3793 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
3794 | #define has_tls_get_addr_call sec_flg1 | |
3795 | ||
3796 | /* Nonzero if this section has any toc or got relocs. */ | |
3797 | #define has_toc_reloc sec_flg2 | |
3798 | ||
3799 | /* Nonzero if this section has a call to another section that uses | |
3800 | the toc or got. */ | |
d77c8a4b | 3801 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3802 | |
3803 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3804 | #define call_check_in_progress sec_flg4 |
70cc837d | 3805 | #define call_check_done sec_flg5 |
4c52953f | 3806 | |
65f38f15 AM |
3807 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3808 | ||
3809 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3810 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3811 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3812 | |
721956f4 AM |
3813 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3814 | ((struct ppc_stub_hash_entry *) \ | |
3815 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3816 | ||
3817 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3818 | ((struct ppc_branch_hash_entry *) \ | |
3819 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3820 | ||
3821 | /* Create an entry in the stub hash table. */ | |
3822 | ||
3823 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3824 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3825 | struct bfd_hash_table *table, | |
3826 | const char *string) | |
721956f4 AM |
3827 | { |
3828 | /* Allocate the structure if it has not already been allocated by a | |
3829 | subclass. */ | |
3830 | if (entry == NULL) | |
3831 | { | |
3832 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3833 | if (entry == NULL) | |
3834 | return entry; | |
3835 | } | |
3836 | ||
3837 | /* Call the allocation method of the superclass. */ | |
3838 | entry = bfd_hash_newfunc (entry, table, string); | |
3839 | if (entry != NULL) | |
3840 | { | |
3841 | struct ppc_stub_hash_entry *eh; | |
3842 | ||
3843 | /* Initialize the local fields. */ | |
3844 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3845 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3846 | eh->stub_sec = NULL; |
3847 | eh->stub_offset = 0; | |
3848 | eh->target_value = 0; | |
3849 | eh->target_section = NULL; | |
721956f4 AM |
3850 | eh->h = NULL; |
3851 | eh->id_sec = NULL; | |
3852 | } | |
3853 | ||
3854 | return entry; | |
3855 | } | |
3856 | ||
3857 | /* Create an entry in the branch hash table. */ | |
3858 | ||
3859 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3860 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3861 | struct bfd_hash_table *table, | |
3862 | const char *string) | |
721956f4 AM |
3863 | { |
3864 | /* Allocate the structure if it has not already been allocated by a | |
3865 | subclass. */ | |
3866 | if (entry == NULL) | |
3867 | { | |
3868 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3869 | if (entry == NULL) | |
3870 | return entry; | |
3871 | } | |
3872 | ||
3873 | /* Call the allocation method of the superclass. */ | |
3874 | entry = bfd_hash_newfunc (entry, table, string); | |
3875 | if (entry != NULL) | |
3876 | { | |
3877 | struct ppc_branch_hash_entry *eh; | |
3878 | ||
3879 | /* Initialize the local fields. */ | |
3880 | eh = (struct ppc_branch_hash_entry *) entry; | |
3881 | eh->offset = 0; | |
3882 | eh->iter = 0; | |
3883 | } | |
3884 | ||
3885 | return entry; | |
3886 | } | |
3887 | ||
65f38f15 AM |
3888 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3889 | ||
3890 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3891 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3892 | struct bfd_hash_table *table, | |
3893 | const char *string) | |
65f38f15 AM |
3894 | { |
3895 | /* Allocate the structure if it has not already been allocated by a | |
3896 | subclass. */ | |
3897 | if (entry == NULL) | |
3898 | { | |
3899 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3900 | if (entry == NULL) | |
3901 | return entry; | |
3902 | } | |
3903 | ||
3904 | /* Call the allocation method of the superclass. */ | |
3905 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3906 | if (entry != NULL) | |
3907 | { | |
3908 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3909 | ||
b3fac117 | 3910 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3911 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3912 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3913 | ||
3914 | /* When making function calls, old ABI code references function entry | |
3915 | points (dot symbols), while new ABI code references the function | |
3916 | descriptor symbol. We need to make any combination of reference and | |
3917 | definition work together, without breaking archive linking. | |
3918 | ||
3919 | For a defined function "foo" and an undefined call to "bar": | |
3920 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3921 | "bar" too). | |
3922 | A new object defines "foo" and references "bar". | |
3923 | ||
3924 | A new object thus has no problem with its undefined symbols being | |
3925 | satisfied by definitions in an old object. On the other hand, the | |
3926 | old object won't have ".bar" satisfied by a new object. | |
3927 | ||
3928 | Keep a list of newly added dot-symbols. */ | |
3929 | ||
3930 | if (string[0] == '.') | |
3931 | { | |
3932 | struct ppc_link_hash_table *htab; | |
3933 | ||
3934 | htab = (struct ppc_link_hash_table *) table; | |
3935 | eh->u.next_dot_sym = htab->dot_syms; | |
3936 | htab->dot_syms = eh; | |
3937 | } | |
65f38f15 AM |
3938 | } |
3939 | ||
3940 | return entry; | |
3941 | } | |
3942 | ||
3b421ab3 AM |
3943 | struct tocsave_entry { |
3944 | asection *sec; | |
3945 | bfd_vma offset; | |
3946 | }; | |
3947 | ||
3948 | static hashval_t | |
3949 | tocsave_htab_hash (const void *p) | |
3950 | { | |
3951 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
3952 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
3953 | } | |
3954 | ||
3955 | static int | |
3956 | tocsave_htab_eq (const void *p1, const void *p2) | |
3957 | { | |
3958 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3959 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3960 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3961 | } | |
3962 | ||
65f38f15 AM |
3963 | /* Create a ppc64 ELF linker hash table. */ |
3964 | ||
3965 | static struct bfd_link_hash_table * | |
4ce794b7 | 3966 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3967 | { |
3968 | struct ppc_link_hash_table *htab; | |
3969 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3970 | ||
4ce794b7 | 3971 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3972 | if (htab == NULL) |
3973 | return NULL; | |
3974 | ||
66eb6687 | 3975 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3976 | sizeof (struct ppc_link_hash_entry), |
3977 | PPC64_ELF_DATA)) | |
65f38f15 | 3978 | { |
e2d34d7d | 3979 | free (htab); |
65f38f15 AM |
3980 | return NULL; |
3981 | } | |
3982 | ||
721956f4 | 3983 | /* Init the stub hash table too. */ |
66eb6687 AM |
3984 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3985 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3986 | return NULL; |
3987 | ||
3988 | /* And the branch hash table. */ | |
66eb6687 AM |
3989 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3990 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3991 | return NULL; |
3992 | ||
3b421ab3 AM |
3993 | htab->tocsave_htab = htab_try_create (1024, |
3994 | tocsave_htab_hash, | |
3995 | tocsave_htab_eq, | |
3996 | NULL); | |
3997 | if (htab->tocsave_htab == NULL) | |
3998 | return NULL; | |
3999 | ||
3254fd24 AM |
4000 | /* Initializing two fields of the union is just cosmetic. We really |
4001 | only care about glist, but when compiled on a 32-bit host the | |
4002 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4003 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4004 | htab->elf.init_got_refcount.refcount = 0; |
4005 | htab->elf.init_got_refcount.glist = NULL; | |
4006 | htab->elf.init_plt_refcount.refcount = 0; | |
4007 | htab->elf.init_plt_refcount.glist = NULL; | |
4008 | htab->elf.init_got_offset.offset = 0; | |
4009 | htab->elf.init_got_offset.glist = NULL; | |
4010 | htab->elf.init_plt_offset.offset = 0; | |
4011 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4012 | |
65f38f15 AM |
4013 | return &htab->elf.root; |
4014 | } | |
4015 | ||
721956f4 AM |
4016 | /* Free the derived linker hash table. */ |
4017 | ||
4018 | static void | |
4ce794b7 | 4019 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 | 4020 | { |
3b421ab3 | 4021 | struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash; |
721956f4 | 4022 | |
3b421ab3 AM |
4023 | bfd_hash_table_free (&htab->stub_hash_table); |
4024 | bfd_hash_table_free (&htab->branch_hash_table); | |
4025 | if (htab->tocsave_htab) | |
4026 | htab_delete (htab->tocsave_htab); | |
721956f4 AM |
4027 | _bfd_generic_link_hash_table_free (hash); |
4028 | } | |
4029 | ||
e717da7e AM |
4030 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4031 | ||
4032 | void | |
4033 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
4034 | { | |
4035 | struct ppc_link_hash_table *htab; | |
4036 | ||
4037 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
4038 | ||
4039 | /* Always hook our dynamic sections into the first bfd, which is the | |
4040 | linker created stub bfd. This ensures that the GOT header is at | |
4041 | the start of the output TOC section. */ | |
4042 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4043 | if (htab == NULL) |
4044 | return; | |
e717da7e AM |
4045 | htab->stub_bfd = abfd; |
4046 | htab->elf.dynobj = abfd; | |
4047 | } | |
4048 | ||
721956f4 AM |
4049 | /* Build a name for an entry in the stub hash table. */ |
4050 | ||
4051 | static char * | |
4ce794b7 AM |
4052 | ppc_stub_name (const asection *input_section, |
4053 | const asection *sym_sec, | |
4054 | const struct ppc_link_hash_entry *h, | |
4055 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4056 | { |
4057 | char *stub_name; | |
4058 | bfd_size_type len; | |
4059 | ||
4060 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4061 | offsets from a sym as a branch target? In fact, we could | |
4062 | probably assume the addend is always zero. */ | |
4063 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4064 | ||
4065 | if (h) | |
4066 | { | |
4067 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4068 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4069 | if (stub_name == NULL) |
4070 | return stub_name; | |
4071 | ||
4072 | sprintf (stub_name, "%08x.%s+%x", | |
4073 | input_section->id & 0xffffffff, | |
4074 | h->elf.root.root.string, | |
4075 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4076 | } |
4077 | else | |
4078 | { | |
ad8e1ba5 | 4079 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4080 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4081 | if (stub_name == NULL) |
4082 | return stub_name; | |
4083 | ||
4084 | sprintf (stub_name, "%08x.%x:%x+%x", | |
4085 | input_section->id & 0xffffffff, | |
4086 | sym_sec->id & 0xffffffff, | |
4087 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4088 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4089 | } |
ee75fd95 AM |
4090 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
4091 | stub_name[len - 2] = 0; | |
721956f4 AM |
4092 | return stub_name; |
4093 | } | |
4094 | ||
4095 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4096 | creating the stub name takes a bit of time. */ | |
4097 | ||
4098 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4099 | ppc_get_stub_entry (const asection *input_section, |
4100 | const asection *sym_sec, | |
039b3fef | 4101 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4102 | const Elf_Internal_Rela *rel, |
4103 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4104 | { |
4105 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
4106 | const asection *id_sec; |
4107 | ||
4108 | /* If this input section is part of a group of sections sharing one | |
4109 | stub section, then use the id of the first section in the group. | |
4110 | Stub names need to include a section id, as there may well be | |
4111 | more than one stub used to reach say, printf, and we need to | |
4112 | distinguish between them. */ | |
4113 | id_sec = htab->stub_group[input_section->id].link_sec; | |
4114 | ||
b3fac117 AM |
4115 | if (h != NULL && h->u.stub_cache != NULL |
4116 | && h->u.stub_cache->h == h | |
4117 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 4118 | { |
b3fac117 | 4119 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4120 | } |
4121 | else | |
4122 | { | |
4123 | char *stub_name; | |
4124 | ||
4125 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
4126 | if (stub_name == NULL) | |
4127 | return NULL; | |
4128 | ||
4129 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4130 | stub_name, FALSE, FALSE); |
721956f4 | 4131 | if (h != NULL) |
b3fac117 | 4132 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4133 | |
4134 | free (stub_name); | |
4135 | } | |
4136 | ||
4137 | return stub_entry; | |
4138 | } | |
4139 | ||
4140 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4141 | stub entry are initialised. */ | |
4142 | ||
4143 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4144 | ppc_add_stub (const char *stub_name, |
4145 | asection *section, | |
25f53a85 | 4146 | struct bfd_link_info *info) |
721956f4 | 4147 | { |
25f53a85 | 4148 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
721956f4 AM |
4149 | asection *link_sec; |
4150 | asection *stub_sec; | |
4151 | struct ppc_stub_hash_entry *stub_entry; | |
4152 | ||
4153 | link_sec = htab->stub_group[section->id].link_sec; | |
4154 | stub_sec = htab->stub_group[section->id].stub_sec; | |
4155 | if (stub_sec == NULL) | |
4156 | { | |
4157 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
4158 | if (stub_sec == NULL) | |
4159 | { | |
d4c88bbb | 4160 | size_t namelen; |
721956f4 AM |
4161 | bfd_size_type len; |
4162 | char *s_name; | |
4163 | ||
d4c88bbb AM |
4164 | namelen = strlen (link_sec->name); |
4165 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
4166 | s_name = bfd_alloc (htab->stub_bfd, len); |
4167 | if (s_name == NULL) | |
4168 | return NULL; | |
4169 | ||
d4c88bbb AM |
4170 | memcpy (s_name, link_sec->name, namelen); |
4171 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
4172 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
4173 | if (stub_sec == NULL) | |
4174 | return NULL; | |
4175 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
4176 | } | |
4177 | htab->stub_group[section->id].stub_sec = stub_sec; | |
4178 | } | |
4179 | ||
4180 | /* Enter this entry into the linker stub hash table. */ | |
4181 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4182 | TRUE, FALSE); |
721956f4 AM |
4183 | if (stub_entry == NULL) |
4184 | { | |
8de848d8 | 4185 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
25f53a85 | 4186 | section->owner, stub_name); |
721956f4 AM |
4187 | return NULL; |
4188 | } | |
4189 | ||
4190 | stub_entry->stub_sec = stub_sec; | |
4191 | stub_entry->stub_offset = 0; | |
4192 | stub_entry->id_sec = link_sec; | |
4193 | return stub_entry; | |
4194 | } | |
4195 | ||
82bd7b59 AM |
4196 | /* Create sections for linker generated code. */ |
4197 | ||
b34976b6 | 4198 | static bfd_boolean |
4ce794b7 | 4199 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
4200 | { |
4201 | struct ppc_link_hash_table *htab; | |
4202 | flagword flags; | |
4203 | ||
4204 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
4205 | if (htab == NULL) |
4206 | return FALSE; | |
82bd7b59 AM |
4207 | |
4208 | /* Create .sfpr for code to save and restore fp regs. */ | |
4209 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
4210 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
4211 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
4212 | flags); | |
82bd7b59 | 4213 | if (htab->sfpr == NULL |
82bd7b59 | 4214 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 4215 | return FALSE; |
82bd7b59 | 4216 | |
721956f4 | 4217 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
4218 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
4219 | flags); | |
4ce794b7 | 4220 | if (htab->glink == NULL |
ee4bf8d2 | 4221 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 4222 | return FALSE; |
82bd7b59 | 4223 | |
58d180e8 AM |
4224 | if (!info->no_ld_generated_unwind_info) |
4225 | { | |
4226 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4227 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4228 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4229 | ".eh_frame", | |
4230 | flags); | |
4231 | if (htab->glink_eh_frame == NULL | |
4232 | || !bfd_set_section_alignment (abfd, htab->glink_eh_frame, 2)) | |
4233 | return FALSE; | |
4234 | } | |
4235 | ||
e054468f AM |
4236 | flags = SEC_ALLOC | SEC_LINKER_CREATED; |
4237 | htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); | |
4238 | if (htab->iplt == NULL | |
4239 | || ! bfd_set_section_alignment (dynobj, htab->iplt, 3)) | |
4240 | return FALSE; | |
4241 | ||
4242 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4243 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4244 | htab->reliplt = bfd_make_section_anyway_with_flags (dynobj, | |
4245 | ".rela.iplt", | |
4246 | flags); | |
4247 | if (htab->reliplt == NULL | |
4248 | || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3)) | |
4249 | return FALSE; | |
4250 | ||
c456f082 | 4251 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
4252 | flags = (SEC_ALLOC | SEC_LOAD |
4253 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4254 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4255 | flags); | |
4ce794b7 | 4256 | if (htab->brlt == NULL |
4ce794b7 | 4257 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 4258 | return FALSE; |
721956f4 | 4259 | |
e4e0193e | 4260 | if (!info->shared) |
c456f082 AM |
4261 | return TRUE; |
4262 | ||
e4e0193e AM |
4263 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
4264 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4265 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
4266 | ".rela.branch_lt", | |
4267 | flags); | |
e054468f | 4268 | if (htab->relbrlt == NULL |
c456f082 AM |
4269 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
4270 | return FALSE; | |
4271 | ||
b34976b6 | 4272 | return TRUE; |
82bd7b59 AM |
4273 | } |
4274 | ||
e717da7e AM |
4275 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4276 | not already done. */ | |
65f38f15 | 4277 | |
b34976b6 | 4278 | static bfd_boolean |
e717da7e | 4279 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4280 | { |
e717da7e AM |
4281 | asection *got, *relgot; |
4282 | flagword flags; | |
4283 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4284 | |
0c8d6e5c | 4285 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4286 | return FALSE; |
4dfe6ac6 NC |
4287 | if (htab == NULL) |
4288 | return FALSE; | |
0ffa91dd | 4289 | |
4ce794b7 | 4290 | if (!htab->got) |
e717da7e AM |
4291 | { |
4292 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4293 | return FALSE; | |
4294 | ||
4295 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
4296 | if (!htab->got) | |
4297 | abort (); | |
4298 | } | |
4299 | ||
4300 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4301 | | SEC_LINKER_CREATED); | |
4302 | ||
c456f082 | 4303 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4304 | if (!got |
e717da7e AM |
4305 | || !bfd_set_section_alignment (abfd, got, 3)) |
4306 | return FALSE; | |
65f38f15 | 4307 | |
c456f082 AM |
4308 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4309 | flags | SEC_READONLY); | |
e717da7e | 4310 | if (!relgot |
e717da7e | 4311 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4312 | return FALSE; |
e717da7e AM |
4313 | |
4314 | ppc64_elf_tdata (abfd)->got = got; | |
4315 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4316 | return TRUE; |
65f38f15 | 4317 | } |
5bd4f169 | 4318 | |
82bd7b59 | 4319 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 4320 | |
b34976b6 | 4321 | static bfd_boolean |
4ce794b7 | 4322 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 4323 | { |
65f38f15 | 4324 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4325 | |
65f38f15 | 4326 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 4327 | return FALSE; |
65f38f15 | 4328 | |
e717da7e | 4329 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4330 | if (htab == NULL) |
4331 | return FALSE; | |
4332 | ||
e717da7e AM |
4333 | if (!htab->got) |
4334 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
4335 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
4336 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4337 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 4338 | if (!info->shared) |
4ce794b7 | 4339 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 4340 | |
e717da7e | 4341 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 4342 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
4343 | abort (); |
4344 | ||
b34976b6 | 4345 | return TRUE; |
5bd4f169 AM |
4346 | } |
4347 | ||
b31867b6 AM |
4348 | /* Follow indirect and warning symbol links. */ |
4349 | ||
4350 | static inline struct bfd_link_hash_entry * | |
4351 | follow_link (struct bfd_link_hash_entry *h) | |
4352 | { | |
4353 | while (h->type == bfd_link_hash_indirect | |
4354 | || h->type == bfd_link_hash_warning) | |
4355 | h = h->u.i.link; | |
4356 | return h; | |
4357 | } | |
4358 | ||
4359 | static inline struct elf_link_hash_entry * | |
4360 | elf_follow_link (struct elf_link_hash_entry *h) | |
4361 | { | |
4362 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4363 | } | |
4364 | ||
4365 | static inline struct ppc_link_hash_entry * | |
4366 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4367 | { | |
4368 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4369 | } | |
4370 | ||
40d16e0b AM |
4371 | /* Merge PLT info on FROM with that on TO. */ |
4372 | ||
4373 | static void | |
4374 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4375 | struct ppc_link_hash_entry *to) | |
4376 | { | |
4377 | if (from->elf.plt.plist != NULL) | |
4378 | { | |
4379 | if (to->elf.plt.plist != NULL) | |
4380 | { | |
4381 | struct plt_entry **entp; | |
4382 | struct plt_entry *ent; | |
4383 | ||
4384 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4385 | { | |
4386 | struct plt_entry *dent; | |
4387 | ||
4388 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4389 | if (dent->addend == ent->addend) | |
4390 | { | |
4391 | dent->plt.refcount += ent->plt.refcount; | |
4392 | *entp = ent->next; | |
4393 | break; | |
4394 | } | |
4395 | if (dent == NULL) | |
4396 | entp = &ent->next; | |
4397 | } | |
4398 | *entp = to->elf.plt.plist; | |
4399 | } | |
4400 | ||
4401 | to->elf.plt.plist = from->elf.plt.plist; | |
4402 | from->elf.plt.plist = NULL; | |
4403 | } | |
4404 | } | |
4405 | ||
65f38f15 AM |
4406 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4407 | ||
4408 | static void | |
fcfa13d2 AM |
4409 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4410 | struct elf_link_hash_entry *dir, | |
4411 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4412 | { |
4413 | struct ppc_link_hash_entry *edir, *eind; | |
4414 | ||
4415 | edir = (struct ppc_link_hash_entry *) dir; | |
4416 | eind = (struct ppc_link_hash_entry *) ind; | |
4417 | ||
c79d6685 AM |
4418 | edir->is_func |= eind->is_func; |
4419 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4420 | edir->tls_mask |= eind->tls_mask; | |
4421 | if (eind->oh != NULL) | |
4422 | edir->oh = ppc_follow_link (eind->oh); | |
4423 | ||
4424 | /* If called to transfer flags for a weakdef during processing | |
4425 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
4426 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
4427 | if (!(ELIMINATE_COPY_RELOCS | |
4428 | && eind->elf.root.type != bfd_link_hash_indirect | |
4429 | && edir->elf.dynamic_adjusted)) | |
4430 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
4431 | ||
4432 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
4433 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4434 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4435 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
4436 | ||
4437 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4438 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4439 | return; | |
4440 | ||
411e1bfb | 4441 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4442 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4443 | { |
bbd7ec4a AM |
4444 | if (edir->dyn_relocs != NULL) |
4445 | { | |
6061a67d AM |
4446 | struct elf_dyn_relocs **pp; |
4447 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4448 | |
fcfa13d2 | 4449 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4450 | list. Merge any entries against the same section. */ |
4451 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4452 | { | |
6061a67d | 4453 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4454 | |
4455 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4456 | if (q->sec == p->sec) | |
4457 | { | |
4458 | q->pc_count += p->pc_count; | |
4459 | q->count += p->count; | |
4460 | *pp = p->next; | |
4461 | break; | |
4462 | } | |
4463 | if (q == NULL) | |
4464 | pp = &p->next; | |
4465 | } | |
4466 | *pp = edir->dyn_relocs; | |
4467 | } | |
4468 | ||
65f38f15 AM |
4469 | edir->dyn_relocs = eind->dyn_relocs; |
4470 | eind->dyn_relocs = NULL; | |
4471 | } | |
65f38f15 | 4472 | |
81848ca0 AM |
4473 | /* Copy over got entries that we may have already seen to the |
4474 | symbol which just became indirect. */ | |
411e1bfb AM |
4475 | if (eind->elf.got.glist != NULL) |
4476 | { | |
4477 | if (edir->elf.got.glist != NULL) | |
4478 | { | |
4479 | struct got_entry **entp; | |
4480 | struct got_entry *ent; | |
4481 | ||
4482 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4483 | { | |
4484 | struct got_entry *dent; | |
4485 | ||
4486 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4487 | if (dent->addend == ent->addend | |
e717da7e | 4488 | && dent->owner == ent->owner |
411e1bfb AM |
4489 | && dent->tls_type == ent->tls_type) |
4490 | { | |
4491 | dent->got.refcount += ent->got.refcount; | |
4492 | *entp = ent->next; | |
4493 | break; | |
4494 | } | |
4495 | if (dent == NULL) | |
4496 | entp = &ent->next; | |
4497 | } | |
4498 | *entp = edir->elf.got.glist; | |
4499 | } | |
4500 | ||
4501 | edir->elf.got.glist = eind->elf.got.glist; | |
4502 | eind->elf.got.glist = NULL; | |
4503 | } | |
4504 | ||
4505 | /* And plt entries. */ | |
40d16e0b | 4506 | move_plt_plist (eind, edir); |
411e1bfb | 4507 | |
fcfa13d2 | 4508 | if (eind->elf.dynindx != -1) |
411e1bfb | 4509 | { |
fcfa13d2 AM |
4510 | if (edir->elf.dynindx != -1) |
4511 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4512 | edir->elf.dynstr_index); | |
411e1bfb AM |
4513 | edir->elf.dynindx = eind->elf.dynindx; |
4514 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4515 | eind->elf.dynindx = -1; | |
4516 | eind->elf.dynstr_index = 0; | |
4517 | } | |
411e1bfb AM |
4518 | } |
4519 | ||
8387904d AM |
4520 | /* Find the function descriptor hash entry from the given function code |
4521 | hash entry FH. Link the entries via their OH fields. */ | |
4522 | ||
4523 | static struct ppc_link_hash_entry * | |
b31867b6 | 4524 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4525 | { |
4526 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4527 | ||
4528 | if (fdh == NULL) | |
4529 | { | |
4530 | const char *fd_name = fh->elf.root.root.string + 1; | |
4531 | ||
4532 | fdh = (struct ppc_link_hash_entry *) | |
4533 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4534 | if (fdh == NULL) |
4535 | return fdh; | |
4536 | ||
4537 | fdh->is_func_descriptor = 1; | |
4538 | fdh->oh = fh; | |
4539 | fh->is_func = 1; | |
4540 | fh->oh = fdh; | |
8387904d AM |
4541 | } |
4542 | ||
b31867b6 | 4543 | return ppc_follow_link (fdh); |
8387904d AM |
4544 | } |
4545 | ||
bb700d78 AM |
4546 | /* Make a fake function descriptor sym for the code sym FH. */ |
4547 | ||
4548 | static struct ppc_link_hash_entry * | |
4549 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4550 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4551 | { |
4552 | bfd *abfd; | |
4553 | asymbol *newsym; | |
4554 | struct bfd_link_hash_entry *bh; | |
4555 | struct ppc_link_hash_entry *fdh; | |
4556 | ||
4557 | abfd = fh->elf.root.u.undef.abfd; | |
4558 | newsym = bfd_make_empty_symbol (abfd); | |
4559 | newsym->name = fh->elf.root.root.string + 1; | |
4560 | newsym->section = bfd_und_section_ptr; | |
4561 | newsym->value = 0; | |
908b32fc | 4562 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4563 | |
4564 | bh = NULL; | |
4565 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4566 | newsym->flags, newsym->section, | |
4567 | newsym->value, NULL, FALSE, FALSE, | |
4568 | &bh)) | |
4569 | return NULL; | |
4570 | ||
4571 | fdh = (struct ppc_link_hash_entry *) bh; | |
4572 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4573 | fdh->fake = 1; |
4574 | fdh->is_func_descriptor = 1; | |
4575 | fdh->oh = fh; | |
4576 | fh->is_func = 1; | |
4577 | fh->oh = fdh; | |
bb700d78 AM |
4578 | return fdh; |
4579 | } | |
4580 | ||
8387904d AM |
4581 | /* Fix function descriptor symbols defined in .opd sections to be |
4582 | function type. */ | |
555cd476 AM |
4583 | |
4584 | static bfd_boolean | |
c16153ae | 4585 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4586 | struct bfd_link_info *info, |
555cd476 | 4587 | Elf_Internal_Sym *isym, |
b3fac117 | 4588 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4589 | flagword *flags ATTRIBUTE_UNUSED, |
4590 | asection **sec, | |
4591 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4592 | { | |
f64b2e8d NC |
4593 | if ((ibfd->flags & DYNAMIC) == 0 |
4594 | && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
4595 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; | |
4596 | ||
e054468f | 4597 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
c16153ae L |
4598 | { |
4599 | if ((ibfd->flags & DYNAMIC) == 0) | |
f64b2e8d | 4600 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
c16153ae | 4601 | } |
e054468f AM |
4602 | else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC) |
4603 | ; | |
4604 | else if (*sec != NULL | |
70cc837d | 4605 | && strcmp ((*sec)->name, ".opd") == 0) |
555cd476 | 4606 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4607 | |
555cd476 AM |
4608 | return TRUE; |
4609 | } | |
4610 | ||
8387904d | 4611 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4612 | inclusion of a new ABI object archive that defines "bar". |
4613 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4614 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4615 | |
4616 | static struct elf_link_hash_entry * | |
4617 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4618 | struct bfd_link_info *info, | |
4619 | const char *name) | |
4620 | { | |
4621 | struct elf_link_hash_entry *h; | |
4622 | char *dot_name; | |
4623 | size_t len; | |
4624 | ||
4625 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4626 | if (h != NULL |
4627 | /* Don't return this sym if it is a fake function descriptor | |
4628 | created by add_symbol_adjust. */ | |
4629 | && !(h->root.type == bfd_link_hash_undefweak | |
4630 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4631 | return h; |
4632 | ||
4633 | if (name[0] == '.') | |
4634 | return h; | |
4635 | ||
4636 | len = strlen (name); | |
4637 | dot_name = bfd_alloc (abfd, len + 2); | |
4638 | if (dot_name == NULL) | |
4639 | return (struct elf_link_hash_entry *) 0 - 1; | |
4640 | dot_name[0] = '.'; | |
4641 | memcpy (dot_name + 1, name, len + 1); | |
4642 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4643 | bfd_release (abfd, dot_name); | |
4644 | return h; | |
4645 | } | |
4646 | ||
4647 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4648 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4649 | are made weak. This stops later archive searches from including an | |
4650 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4651 | prevents the linker complaining about undefined symbols. |
4652 | We also check and correct mismatched symbol visibility here. The | |
4653 | most restrictive visibility of the function descriptor and the | |
4654 | function entry symbol is used. */ | |
8387904d AM |
4655 | |
4656 | static bfd_boolean | |
b3fac117 | 4657 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4658 | { |
8387904d AM |
4659 | struct ppc_link_hash_table *htab; |
4660 | struct ppc_link_hash_entry *fdh; | |
4661 | ||
b3fac117 | 4662 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4663 | return TRUE; |
4664 | ||
b3fac117 AM |
4665 | if (eh->elf.root.type == bfd_link_hash_warning) |
4666 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4667 | |
b3fac117 AM |
4668 | if (eh->elf.root.root.string[0] != '.') |
4669 | abort (); | |
8387904d | 4670 | |
b3fac117 | 4671 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4672 | if (htab == NULL) |
4673 | return FALSE; | |
4674 | ||
b31867b6 AM |
4675 | fdh = lookup_fdh (eh, htab); |
4676 | if (fdh == NULL) | |
4677 | { | |
4678 | if (!info->relocatable | |
4679 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4680 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4681 | && eh->elf.ref_regular) | |
4682 | { | |
4683 | /* Make an undefweak function descriptor sym, which is enough to | |
4684 | pull in an --as-needed shared lib, but won't cause link | |
4685 | errors. Archives are handled elsewhere. */ | |
4686 | fdh = make_fdh (info, eh); | |
4687 | if (fdh == NULL) | |
4688 | return FALSE; | |
4689 | fdh->elf.ref_regular = 1; | |
4690 | } | |
bb700d78 | 4691 | } |
b31867b6 | 4692 | else |
8387904d | 4693 | { |
35b0ce59 AM |
4694 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4695 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4696 | if (entry_vis < descr_vis) | |
4697 | fdh->elf.other += entry_vis - descr_vis; | |
4698 | else if (entry_vis > descr_vis) | |
4699 | eh->elf.other += descr_vis - entry_vis; | |
4700 | ||
e87d886e AM |
4701 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4702 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4703 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4704 | { |
4705 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4706 | eh->was_undefined = 1; | |
4707 | htab->twiddled_syms = 1; | |
4708 | } | |
8387904d | 4709 | } |
99877b66 | 4710 | |
8387904d AM |
4711 | return TRUE; |
4712 | } | |
4713 | ||
b3fac117 AM |
4714 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4715 | ||
8387904d | 4716 | static bfd_boolean |
7d9616d7 | 4717 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4718 | { |
99877b66 | 4719 | struct ppc_link_hash_table *htab; |
b3fac117 | 4720 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4721 | |
0c8d6e5c | 4722 | if (!is_ppc64_elf (info->output_bfd)) |
35b0ce59 | 4723 | return TRUE; |
4dfe6ac6 NC |
4724 | htab = ppc_hash_table (info); |
4725 | if (htab == NULL) | |
4726 | return FALSE; | |
35b0ce59 | 4727 | |
0c8d6e5c | 4728 | if (is_ppc64_elf (ibfd)) |
b3fac117 AM |
4729 | { |
4730 | p = &htab->dot_syms; | |
4731 | while ((eh = *p) != NULL) | |
4732 | { | |
4733 | *p = NULL; | |
4734 | if (!add_symbol_adjust (eh, info)) | |
4735 | return FALSE; | |
4736 | p = &eh->u.next_dot_sym; | |
4737 | } | |
4738 | } | |
4739 | ||
4740 | /* Clear the list for non-ppc64 input files. */ | |
4741 | p = &htab->dot_syms; | |
4742 | while ((eh = *p) != NULL) | |
4743 | { | |
4744 | *p = NULL; | |
4745 | p = &eh->u.next_dot_sym; | |
4746 | } | |
99877b66 AM |
4747 | |
4748 | /* We need to fix the undefs list for any syms we have twiddled to | |
4749 | undef_weak. */ | |
4750 | if (htab->twiddled_syms) | |
4751 | { | |
77cfaee6 | 4752 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4753 | htab->twiddled_syms = 0; |
4754 | } | |
b3fac117 | 4755 | return TRUE; |
8387904d AM |
4756 | } |
4757 | ||
97fed1c9 JJ |
4758 | /* Undo hash table changes when an --as-needed input file is determined |
4759 | not to be needed. */ | |
4760 | ||
4761 | static bfd_boolean | |
4762 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4763 | struct bfd_link_info *info) | |
4764 | { | |
4dfe6ac6 NC |
4765 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
4766 | ||
4767 | if (htab == NULL) | |
4768 | return FALSE; | |
4769 | ||
4770 | htab->dot_syms = NULL; | |
97fed1c9 JJ |
4771 | return TRUE; |
4772 | } | |
4773 | ||
aa374f67 AM |
4774 | /* If --just-symbols against a final linked binary, then assume we need |
4775 | toc adjusting stubs when calling functions defined there. */ | |
4776 | ||
4777 | static void | |
4778 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4779 | { | |
4780 | if ((sec->flags & SEC_CODE) != 0 | |
4781 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4782 | && is_ppc64_elf (sec->owner)) | |
4783 | { | |
4784 | asection *got = bfd_get_section_by_name (sec->owner, ".got"); | |
4785 | if (got != NULL | |
4786 | && got->size >= elf_backend_got_header_size | |
4787 | && bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
4788 | sec->has_toc_reloc = 1; | |
4789 | } | |
4790 | _bfd_elf_link_just_syms (sec, info); | |
4791 | } | |
4792 | ||
e054468f | 4793 | static struct plt_entry ** |
4ce794b7 AM |
4794 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4795 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4796 | { |
4797 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4798 | struct plt_entry **local_plt; |
f961d9dd | 4799 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4800 | |
4801 | if (local_got_ents == NULL) | |
4802 | { | |
4803 | bfd_size_type size = symtab_hdr->sh_info; | |
4804 | ||
e054468f AM |
4805 | size *= (sizeof (*local_got_ents) |
4806 | + sizeof (*local_plt) | |
4807 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4808 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4809 | if (local_got_ents == NULL) |
e054468f | 4810 | return NULL; |
411e1bfb AM |
4811 | elf_local_got_ents (abfd) = local_got_ents; |
4812 | } | |
4813 | ||
e054468f | 4814 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4815 | { |
4816 | struct got_entry *ent; | |
4817 | ||
4818 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4819 | if (ent->addend == r_addend |
4820 | && ent->owner == abfd | |
4821 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4822 | break; |
4823 | if (ent == NULL) | |
4824 | { | |
4825 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4826 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4827 | if (ent == NULL) |
4828 | return FALSE; | |
4829 | ent->next = local_got_ents[r_symndx]; | |
4830 | ent->addend = r_addend; | |
e717da7e | 4831 | ent->owner = abfd; |
411e1bfb | 4832 | ent->tls_type = tls_type; |
927be08e | 4833 | ent->is_indirect = FALSE; |
411e1bfb AM |
4834 | ent->got.refcount = 0; |
4835 | local_got_ents[r_symndx] = ent; | |
4836 | } | |
4837 | ent->got.refcount += 1; | |
4838 | } | |
4839 | ||
e054468f | 4840 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4841 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
e7b938ca | 4842 | local_got_tls_masks[r_symndx] |= tls_type; |
e054468f AM |
4843 | |
4844 | return local_plt + r_symndx; | |
65f38f15 AM |
4845 | } |
4846 | ||
411e1bfb | 4847 | static bfd_boolean |
e054468f | 4848 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4849 | { |
411e1bfb | 4850 | struct plt_entry *ent; |
1e2f5b6e | 4851 | |
e054468f | 4852 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4853 | if (ent->addend == addend) |
4854 | break; | |
4855 | if (ent == NULL) | |
1e2f5b6e | 4856 | { |
411e1bfb | 4857 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4858 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4859 | if (ent == NULL) |
4860 | return FALSE; | |
e054468f | 4861 | ent->next = *plist; |
411e1bfb AM |
4862 | ent->addend = addend; |
4863 | ent->plt.refcount = 0; | |
e054468f | 4864 | *plist = ent; |
1e2f5b6e | 4865 | } |
411e1bfb | 4866 | ent->plt.refcount += 1; |
b34976b6 | 4867 | return TRUE; |
1e2f5b6e AM |
4868 | } |
4869 | ||
e054468f AM |
4870 | static bfd_boolean |
4871 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4872 | { | |
4873 | return (r_type == R_PPC64_REL24 | |
4874 | || r_type == R_PPC64_REL14 | |
4875 | || r_type == R_PPC64_REL14_BRTAKEN | |
4876 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4877 | || r_type == R_PPC64_ADDR24 | |
4878 | || r_type == R_PPC64_ADDR14 | |
4879 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
4880 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
4881 | } | |
4882 | ||
5bd4f169 | 4883 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4884 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4885 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4886 | |
b34976b6 | 4887 | static bfd_boolean |
4ce794b7 AM |
4888 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4889 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4890 | { |
65f38f15 | 4891 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4892 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4893 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4894 | const Elf_Internal_Rela *rel; |
4895 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4896 | asection *sreloc; |
1e2f5b6e | 4897 | asection **opd_sym_map; |
3a71aa26 | 4898 | struct elf_link_hash_entry *tga, *dottga; |
5bd4f169 | 4899 | |
1049f94e | 4900 | if (info->relocatable) |
b34976b6 | 4901 | return TRUE; |
5bd4f169 | 4902 | |
680a3378 AM |
4903 | /* Don't do anything special with non-loaded, non-alloced sections. |
4904 | In particular, any relocs in such sections should not affect GOT | |
4905 | and PLT reference counting (ie. we don't allow them to create GOT | |
4906 | or PLT entries), there's no possibility or desire to optimize TLS | |
4907 | relocs, and there's not much point in propagating relocs to shared | |
4908 | libs that the dynamic linker won't relocate. */ | |
4909 | if ((sec->flags & SEC_ALLOC) == 0) | |
4910 | return TRUE; | |
4911 | ||
0c8d6e5c | 4912 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4913 | |
65f38f15 | 4914 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4915 | if (htab == NULL) |
4916 | return FALSE; | |
4917 | ||
3a71aa26 AM |
4918 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4919 | FALSE, FALSE, TRUE); | |
4920 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4921 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4922 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4923 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4924 | sreloc = NULL; |
1e2f5b6e | 4925 | opd_sym_map = NULL; |
70cc837d | 4926 | if (strcmp (sec->name, ".opd") == 0) |
1e2f5b6e AM |
4927 | { |
4928 | /* Garbage collection needs some extra help with .opd sections. | |
4929 | We don't want to necessarily keep everything referenced by | |
4930 | relocs in .opd, as that would keep all functions. Instead, | |
4931 | if we reference an .opd symbol (a function descriptor), we | |
4932 | want to keep the function code symbol's section. This is | |
4933 | easy for global symbols, but for local syms we need to keep | |
74f0fb50 | 4934 | information about the associated function section. */ |
1e2f5b6e AM |
4935 | bfd_size_type amt; |
4936 | ||
74f0fb50 | 4937 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
4ce794b7 | 4938 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4939 | if (opd_sym_map == NULL) |
b34976b6 | 4940 | return FALSE; |
74f0fb50 | 4941 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
7c8fe5c4 AM |
4942 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
4943 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4944 | } |
5bd4f169 | 4945 | |
82bd7b59 AM |
4946 | if (htab->sfpr == NULL |
4947 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4948 | return FALSE; |
82bd7b59 | 4949 | |
5bd4f169 AM |
4950 | rel_end = relocs + sec->reloc_count; |
4951 | for (rel = relocs; rel < rel_end; rel++) | |
4952 | { | |
4953 | unsigned long r_symndx; | |
4954 | struct elf_link_hash_entry *h; | |
04c9666a | 4955 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4956 | int tls_type; |
7c8fe5c4 | 4957 | struct _ppc64_elf_section_data *ppc64_sec; |
e054468f | 4958 | struct plt_entry **ifunc; |
5bd4f169 AM |
4959 | |
4960 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4961 | if (r_symndx < symtab_hdr->sh_info) | |
4962 | h = NULL; | |
4963 | else | |
973a3492 L |
4964 | { |
4965 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4966 | h = elf_follow_link (h); |
973a3492 | 4967 | } |
5bd4f169 | 4968 | |
727fc41e | 4969 | tls_type = 0; |
e054468f | 4970 | ifunc = NULL; |
25f23106 AM |
4971 | if (h != NULL) |
4972 | { | |
4973 | if (h->type == STT_GNU_IFUNC) | |
4974 | { | |
4975 | h->needs_plt = 1; | |
4976 | ifunc = &h->plt.plist; | |
4977 | } | |
4978 | } | |
4979 | else | |
4980 | { | |
4981 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4982 | abfd, r_symndx); | |
4983 | if (isym == NULL) | |
4984 | return FALSE; | |
4985 | ||
4986 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4987 | { | |
4988 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4989 | rel->r_addend, PLT_IFUNC); | |
4990 | if (ifunc == NULL) | |
4991 | return FALSE; | |
4992 | } | |
4993 | } | |
4ce794b7 | 4994 | r_type = ELF64_R_TYPE (rel->r_info); |
e054468f AM |
4995 | if (is_branch_reloc (r_type)) |
4996 | { | |
4997 | if (h != NULL && (h == tga || h == dottga)) | |
4998 | { | |
4999 | if (rel != relocs | |
5000 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5001 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5002 | /* We have a new-style __tls_get_addr call with a marker | |
5003 | reloc. */ | |
5004 | ; | |
5005 | else | |
5006 | /* Mark this section as having an old-style call. */ | |
5007 | sec->has_tls_get_addr_call = 1; | |
5008 | } | |
727fc41e | 5009 | |
e054468f | 5010 | /* STT_GNU_IFUNC symbols must have a PLT entry. */ |
e054468f AM |
5011 | if (ifunc != NULL |
5012 | && !update_plt_info (abfd, ifunc, rel->r_addend)) | |
5013 | return FALSE; | |
5014 | } | |
727fc41e | 5015 | |
a33d1f77 | 5016 | switch (r_type) |
5bd4f169 | 5017 | { |
727fc41e AM |
5018 | case R_PPC64_TLSGD: |
5019 | case R_PPC64_TLSLD: | |
5020 | /* These special tls relocs tie a call to __tls_get_addr with | |
5021 | its parameter symbol. */ | |
5022 | break; | |
5023 | ||
411e1bfb AM |
5024 | case R_PPC64_GOT_TLSLD16: |
5025 | case R_PPC64_GOT_TLSLD16_LO: | |
5026 | case R_PPC64_GOT_TLSLD16_HI: | |
5027 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5028 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5029 | goto dogottls; |
5030 | ||
5031 | case R_PPC64_GOT_TLSGD16: | |
5032 | case R_PPC64_GOT_TLSGD16_LO: | |
5033 | case R_PPC64_GOT_TLSGD16_HI: | |
5034 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5035 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5036 | goto dogottls; |
5037 | ||
5038 | case R_PPC64_GOT_TPREL16_DS: | |
5039 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5040 | case R_PPC64_GOT_TPREL16_HI: | |
5041 | case R_PPC64_GOT_TPREL16_HA: | |
1d483afe | 5042 | if (!info->executable) |
411e1bfb AM |
5043 | info->flags |= DF_STATIC_TLS; |
5044 | tls_type = TLS_TLS | TLS_TPREL; | |
5045 | goto dogottls; | |
5046 | ||
5047 | case R_PPC64_GOT_DTPREL16_DS: | |
5048 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5049 | case R_PPC64_GOT_DTPREL16_HI: | |
5050 | case R_PPC64_GOT_DTPREL16_HA: | |
5051 | tls_type = TLS_TLS | TLS_DTPREL; | |
5052 | dogottls: | |
5053 | sec->has_tls_reloc = 1; | |
5054 | /* Fall thru */ | |
5055 | ||
5bd4f169 | 5056 | case R_PPC64_GOT16: |
5bd4f169 | 5057 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5058 | case R_PPC64_GOT16_HA: |
5059 | case R_PPC64_GOT16_HI: | |
5060 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5061 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5062 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5063 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5064 | if (r_type == R_PPC64_GOT_TLSLD16 |
5065 | || r_type == R_PPC64_GOT_TLSGD16 | |
5066 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5067 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5068 | || r_type == R_PPC64_GOT16 | |
5069 | || r_type == R_PPC64_GOT16_DS) | |
5070 | { | |
5071 | htab->do_multi_toc = 1; | |
d77c8a4b | 5072 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5073 | } |
5074 | ||
e717da7e AM |
5075 | if (ppc64_elf_tdata (abfd)->got == NULL |
5076 | && !create_got_section (abfd, info)) | |
b34976b6 | 5077 | return FALSE; |
5bd4f169 AM |
5078 | |
5079 | if (h != NULL) | |
5080 | { | |
411e1bfb AM |
5081 | struct ppc_link_hash_entry *eh; |
5082 | struct got_entry *ent; | |
65f38f15 | 5083 | |
411e1bfb AM |
5084 | eh = (struct ppc_link_hash_entry *) h; |
5085 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5086 | if (ent->addend == rel->r_addend | |
e717da7e | 5087 | && ent->owner == abfd |
411e1bfb AM |
5088 | && ent->tls_type == tls_type) |
5089 | break; | |
5090 | if (ent == NULL) | |
5bd4f169 | 5091 | { |
411e1bfb | 5092 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5093 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5094 | if (ent == NULL) |
b34976b6 | 5095 | return FALSE; |
411e1bfb AM |
5096 | ent->next = eh->elf.got.glist; |
5097 | ent->addend = rel->r_addend; | |
e717da7e | 5098 | ent->owner = abfd; |
411e1bfb | 5099 | ent->tls_type = tls_type; |
927be08e | 5100 | ent->is_indirect = FALSE; |
411e1bfb AM |
5101 | ent->got.refcount = 0; |
5102 | eh->elf.got.glist = ent; | |
5bd4f169 | 5103 | } |
411e1bfb | 5104 | ent->got.refcount += 1; |
e7b938ca | 5105 | eh->tls_mask |= tls_type; |
5bd4f169 | 5106 | } |
411e1bfb AM |
5107 | else |
5108 | /* This is a global offset table entry for a local symbol. */ | |
5109 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5110 | rel->r_addend, tls_type)) | |
5111 | return FALSE; | |
5bd4f169 AM |
5112 | break; |
5113 | ||
5bd4f169 | 5114 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5115 | case R_PPC64_PLT16_HI: |
5116 | case R_PPC64_PLT16_LO: | |
5117 | case R_PPC64_PLT32: | |
5118 | case R_PPC64_PLT64: | |
5bd4f169 | 5119 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
5120 | actually build the entry in adjust_dynamic_symbol, |
5121 | because this might be a case of linking PIC code without | |
5122 | linking in any dynamic objects, in which case we don't | |
5123 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
5124 | if (h == NULL) |
5125 | { | |
5126 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 5127 | table entry for a local symbol. */ |
5bd4f169 | 5128 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 5129 | return FALSE; |
5bd4f169 | 5130 | } |
411e1bfb | 5131 | else |
e054468f AM |
5132 | { |
5133 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5134 | return FALSE; | |
5135 | h->needs_plt = 1; | |
5136 | if (h->root.root.string[0] == '.' | |
5137 | && h->root.root.string[1] != '\0') | |
5138 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5139 | } | |
5bd4f169 AM |
5140 | break; |
5141 | ||
5142 | /* The following relocations don't need to propagate the | |
5143 | relocation if linking a shared object since they are | |
5144 | section relative. */ | |
5145 | case R_PPC64_SECTOFF: | |
5146 | case R_PPC64_SECTOFF_LO: | |
5147 | case R_PPC64_SECTOFF_HI: | |
5148 | case R_PPC64_SECTOFF_HA: | |
5149 | case R_PPC64_SECTOFF_DS: | |
5150 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5151 | case R_PPC64_DTPREL16: |
5152 | case R_PPC64_DTPREL16_LO: | |
5153 | case R_PPC64_DTPREL16_HI: | |
5154 | case R_PPC64_DTPREL16_HA: | |
5155 | case R_PPC64_DTPREL16_DS: | |
5156 | case R_PPC64_DTPREL16_LO_DS: | |
5157 | case R_PPC64_DTPREL16_HIGHER: | |
5158 | case R_PPC64_DTPREL16_HIGHERA: | |
5159 | case R_PPC64_DTPREL16_HIGHEST: | |
5160 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5161 | break; |
5162 | ||
ad8e1ba5 | 5163 | /* Nor do these. */ |
25f23106 AM |
5164 | case R_PPC64_REL16: |
5165 | case R_PPC64_REL16_LO: | |
5166 | case R_PPC64_REL16_HI: | |
5167 | case R_PPC64_REL16_HA: | |
5168 | break; | |
5169 | ||
ad8e1ba5 | 5170 | case R_PPC64_TOC16: |
33c0ec9d AM |
5171 | case R_PPC64_TOC16_DS: |
5172 | htab->do_multi_toc = 1; | |
d77c8a4b | 5173 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
ad8e1ba5 AM |
5174 | case R_PPC64_TOC16_LO: |
5175 | case R_PPC64_TOC16_HI: | |
5176 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5177 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5178 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5179 | break; |
5180 | ||
5bd4f169 AM |
5181 | /* This relocation describes the C++ object vtable hierarchy. |
5182 | Reconstruct it for later use during GC. */ | |
5183 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5184 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5185 | return FALSE; |
5bd4f169 AM |
5186 | break; |
5187 | ||
5188 | /* This relocation describes which C++ vtable entries are actually | |
5189 | used. Record for later use during GC. */ | |
5190 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5191 | BFD_ASSERT (h != NULL); |
5192 | if (h != NULL | |
5193 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5194 | return FALSE; |
5bd4f169 AM |
5195 | break; |
5196 | ||
721956f4 AM |
5197 | case R_PPC64_REL14: |
5198 | case R_PPC64_REL14_BRTAKEN: | |
5199 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5200 | { |
5201 | asection *dest = NULL; | |
5202 | ||
5203 | /* Heuristic: If jumping outside our section, chances are | |
5204 | we are going to need a stub. */ | |
5205 | if (h != NULL) | |
5206 | { | |
5207 | /* If the sym is weak it may be overridden later, so | |
5208 | don't assume we know where a weak sym lives. */ | |
5209 | if (h->root.type == bfd_link_hash_defined) | |
5210 | dest = h->root.u.def.section; | |
5211 | } | |
5212 | else | |
87d72d41 AM |
5213 | { |
5214 | Elf_Internal_Sym *isym; | |
5215 | ||
5216 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5217 | abfd, r_symndx); | |
5218 | if (isym == NULL) | |
5219 | return FALSE; | |
5220 | ||
5221 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5222 | } | |
5223 | ||
220c76dd | 5224 | if (dest != sec) |
7c8fe5c4 | 5225 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5226 | } |
721956f4 AM |
5227 | /* Fall through. */ |
5228 | ||
5d1634d7 | 5229 | case R_PPC64_REL24: |
e054468f | 5230 | if (h != NULL && ifunc == NULL) |
5d1634d7 AM |
5231 | { |
5232 | /* We may need a .plt entry if the function this reloc | |
5233 | refers to is in a shared lib. */ | |
e054468f | 5234 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) |
411e1bfb | 5235 | return FALSE; |
e054468f AM |
5236 | h->needs_plt = 1; |
5237 | if (h->root.root.string[0] == '.' | |
5238 | && h->root.root.string[1] != '\0') | |
5239 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
3a71aa26 | 5240 | if (h == tga || h == dottga) |
411e1bfb | 5241 | sec->has_tls_reloc = 1; |
411e1bfb AM |
5242 | } |
5243 | break; | |
5244 | ||
5245 | case R_PPC64_TPREL64: | |
5246 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
1d483afe | 5247 | if (!info->executable) |
411e1bfb AM |
5248 | info->flags |= DF_STATIC_TLS; |
5249 | goto dotlstoc; | |
5250 | ||
5251 | case R_PPC64_DTPMOD64: | |
5252 | if (rel + 1 < rel_end | |
5253 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5254 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5255 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5256 | else |
951fd09b | 5257 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5258 | goto dotlstoc; |
5259 | ||
5260 | case R_PPC64_DTPREL64: | |
5261 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5262 | if (rel != relocs | |
5263 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5264 | && rel[-1].r_offset == rel->r_offset - 8) | |
5265 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5266 | Don't mark with TLS_DTPREL. */ | |
5267 | goto dodyn; | |
5268 | ||
5269 | dotlstoc: | |
5270 | sec->has_tls_reloc = 1; | |
5271 | if (h != NULL) | |
5272 | { | |
5273 | struct ppc_link_hash_entry *eh; | |
5274 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5275 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5276 | } |
5277 | else | |
5278 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5279 | rel->r_addend, tls_type)) | |
5280 | return FALSE; | |
5281 | ||
7c8fe5c4 AM |
5282 | ppc64_sec = ppc64_elf_section_data (sec); |
5283 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5284 | { |
3a71aa26 AM |
5285 | bfd_size_type amt; |
5286 | ||
e7b938ca | 5287 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5288 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5289 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5290 | if (ppc64_sec->u.toc.symndx == NULL) | |
5291 | return FALSE; | |
5292 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5293 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5294 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5295 | return FALSE; |
7c8fe5c4 AM |
5296 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5297 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5298 | } |
5299 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5300 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5301 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5302 | |
5303 | /* Mark the second slot of a GD or LD entry. | |
5304 | -1 to indicate GD and -2 to indicate LD. */ | |
5305 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5306 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5307 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5308 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5309 | goto dodyn; |
5310 | ||
5311 | case R_PPC64_TPREL16: | |
5312 | case R_PPC64_TPREL16_LO: | |
5313 | case R_PPC64_TPREL16_HI: | |
5314 | case R_PPC64_TPREL16_HA: | |
5315 | case R_PPC64_TPREL16_DS: | |
5316 | case R_PPC64_TPREL16_LO_DS: | |
5317 | case R_PPC64_TPREL16_HIGHER: | |
5318 | case R_PPC64_TPREL16_HIGHERA: | |
5319 | case R_PPC64_TPREL16_HIGHEST: | |
5320 | case R_PPC64_TPREL16_HIGHESTA: | |
5321 | if (info->shared) | |
5322 | { | |
1d483afe AM |
5323 | if (!info->executable) |
5324 | info->flags |= DF_STATIC_TLS; | |
411e1bfb | 5325 | goto dodyn; |
5d1634d7 AM |
5326 | } |
5327 | break; | |
5328 | ||
e86ce104 | 5329 | case R_PPC64_ADDR64: |
1e2f5b6e | 5330 | if (opd_sym_map != NULL |
1e2f5b6e | 5331 | && rel + 1 < rel_end |
4ce794b7 | 5332 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5333 | { |
8387904d AM |
5334 | if (h != NULL) |
5335 | { | |
5336 | if (h->root.root.string[0] == '.' | |
5337 | && h->root.root.string[1] != 0 | |
b31867b6 | 5338 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
8387904d AM |
5339 | ; |
5340 | else | |
5341 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
5342 | } | |
5343 | else | |
5344 | { | |
5345 | asection *s; | |
87d72d41 | 5346 | Elf_Internal_Sym *isym; |
1e2f5b6e | 5347 | |
87d72d41 AM |
5348 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5349 | abfd, r_symndx); | |
5350 | if (isym == NULL) | |
8387904d | 5351 | return FALSE; |
87d72d41 AM |
5352 | |
5353 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5354 | if (s != NULL && s != sec) | |
3f764659 | 5355 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 5356 | } |
1e2f5b6e | 5357 | } |
e86ce104 AM |
5358 | /* Fall through. */ |
5359 | ||
04c9666a | 5360 | case R_PPC64_REL30: |
5bd4f169 | 5361 | case R_PPC64_REL32: |
04c9666a | 5362 | case R_PPC64_REL64: |
65f38f15 AM |
5363 | case R_PPC64_ADDR14: |
5364 | case R_PPC64_ADDR14_BRNTAKEN: | |
5365 | case R_PPC64_ADDR14_BRTAKEN: | |
5366 | case R_PPC64_ADDR16: | |
5367 | case R_PPC64_ADDR16_DS: | |
5368 | case R_PPC64_ADDR16_HA: | |
5369 | case R_PPC64_ADDR16_HI: | |
5370 | case R_PPC64_ADDR16_HIGHER: | |
5371 | case R_PPC64_ADDR16_HIGHERA: | |
5372 | case R_PPC64_ADDR16_HIGHEST: | |
5373 | case R_PPC64_ADDR16_HIGHESTA: | |
5374 | case R_PPC64_ADDR16_LO: | |
5375 | case R_PPC64_ADDR16_LO_DS: | |
5376 | case R_PPC64_ADDR24: | |
65f38f15 | 5377 | case R_PPC64_ADDR32: |
65f38f15 AM |
5378 | case R_PPC64_UADDR16: |
5379 | case R_PPC64_UADDR32: | |
5380 | case R_PPC64_UADDR64: | |
5bd4f169 | 5381 | case R_PPC64_TOC: |
81848ca0 AM |
5382 | if (h != NULL && !info->shared) |
5383 | /* We may need a copy reloc. */ | |
f5385ebf | 5384 | h->non_got_ref = 1; |
81848ca0 | 5385 | |
41bd81ab | 5386 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 5387 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 5388 | break; |
e86ce104 | 5389 | |
65f38f15 AM |
5390 | /* If we are creating a shared library, and this is a reloc |
5391 | against a global symbol, or a non PC relative reloc | |
5392 | against a local symbol, then we need to copy the reloc | |
5393 | into the shared library. However, if we are linking with | |
5394 | -Bsymbolic, we do not need to copy a reloc against a | |
5395 | global symbol which is defined in an object we are | |
5396 | including in the link (i.e., DEF_REGULAR is set). At | |
5397 | this point we have not seen all the input files, so it is | |
5398 | possible that DEF_REGULAR is not set now but will be set | |
5399 | later (it is never cleared). In case of a weak definition, | |
5400 | DEF_REGULAR may be cleared later by a strong definition in | |
5401 | a shared library. We account for that possibility below by | |
f4656909 | 5402 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5403 | table entry. A similar situation occurs when creating |
5404 | shared libraries and symbol visibility changes render the | |
5405 | symbol local. | |
5406 | ||
5407 | If on the other hand, we are creating an executable, we | |
5408 | may need to keep relocations for symbols satisfied by a | |
5409 | dynamic library if we manage to avoid copy relocs for the | |
5410 | symbol. */ | |
411e1bfb | 5411 | dodyn: |
65f38f15 | 5412 | if ((info->shared |
1d483afe | 5413 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 AM |
5414 | || (h != NULL |
5415 | && (! info->symbolic | |
5416 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 5417 | || !h->def_regular)))) |
f4656909 AM |
5418 | || (ELIMINATE_COPY_RELOCS |
5419 | && !info->shared | |
65f38f15 AM |
5420 | && h != NULL |
5421 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 AM |
5422 | || !h->def_regular)) |
5423 | || (!info->shared | |
5424 | && ifunc != NULL)) | |
5bd4f169 | 5425 | { |
6061a67d AM |
5426 | struct elf_dyn_relocs *p; |
5427 | struct elf_dyn_relocs **head; | |
ec338859 | 5428 | |
65f38f15 AM |
5429 | /* We must copy these reloc types into the output file. |
5430 | Create a reloc section in dynobj and make room for | |
5431 | this reloc. */ | |
5bd4f169 AM |
5432 | if (sreloc == NULL) |
5433 | { | |
83bac4b0 NC |
5434 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5435 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5436 | |
5bd4f169 | 5437 | if (sreloc == NULL) |
83bac4b0 | 5438 | return FALSE; |
5bd4f169 AM |
5439 | } |
5440 | ||
65f38f15 AM |
5441 | /* If this is a global symbol, we count the number of |
5442 | relocations we need for this symbol. */ | |
5443 | if (h != NULL) | |
5444 | { | |
ec338859 | 5445 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
5446 | } |
5447 | else | |
5448 | { | |
ec338859 AM |
5449 | /* Track dynamic relocs needed for local syms too. |
5450 | We really need local syms available to do this | |
5451 | easily. Oh well. */ | |
ec338859 | 5452 | asection *s; |
6edfbbad | 5453 | void *vpp; |
87d72d41 | 5454 | Elf_Internal_Sym *isym; |
6edfbbad | 5455 | |
87d72d41 AM |
5456 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5457 | abfd, r_symndx); | |
5458 | if (isym == NULL) | |
b34976b6 | 5459 | return FALSE; |
ec338859 | 5460 | |
87d72d41 AM |
5461 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5462 | if (s == NULL) | |
5463 | s = sec; | |
5464 | ||
6edfbbad | 5465 | vpp = &elf_section_data (s)->local_dynrel; |
6061a67d | 5466 | head = (struct elf_dyn_relocs **) vpp; |
65f38f15 | 5467 | } |
ec338859 AM |
5468 | |
5469 | p = *head; | |
5470 | if (p == NULL || p->sec != sec) | |
5471 | { | |
4ce794b7 | 5472 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 5473 | if (p == NULL) |
b34976b6 | 5474 | return FALSE; |
ec338859 AM |
5475 | p->next = *head; |
5476 | *head = p; | |
5477 | p->sec = sec; | |
5478 | p->count = 0; | |
5479 | p->pc_count = 0; | |
5480 | } | |
5481 | ||
5482 | p->count += 1; | |
1d483afe | 5483 | if (!must_be_dyn_reloc (info, r_type)) |
ec338859 | 5484 | p->pc_count += 1; |
65f38f15 | 5485 | } |
5bd4f169 | 5486 | break; |
65f38f15 AM |
5487 | |
5488 | default: | |
96e0dda4 | 5489 | break; |
5bd4f169 AM |
5490 | } |
5491 | } | |
5492 | ||
b34976b6 | 5493 | return TRUE; |
5bd4f169 AM |
5494 | } |
5495 | ||
8387904d AM |
5496 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
5497 | of the code entry point, and its section. */ | |
5498 | ||
5499 | static bfd_vma | |
5500 | opd_entry_value (asection *opd_sec, | |
5501 | bfd_vma offset, | |
5502 | asection **code_sec, | |
5503 | bfd_vma *code_off) | |
5504 | { | |
5505 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5506 | Elf_Internal_Rela *relocs; |
8387904d | 5507 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5508 | bfd_vma val; |
8387904d | 5509 | |
4b85d634 AM |
5510 | /* No relocs implies we are linking a --just-symbols object. */ |
5511 | if (opd_sec->reloc_count == 0) | |
5512 | { | |
aa374f67 AM |
5513 | char buf[8]; |
5514 | ||
5515 | if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8)) | |
4b85d634 | 5516 | return (bfd_vma) -1; |
3b36f7e6 | 5517 | |
aa374f67 | 5518 | val = bfd_get_64 (opd_bfd, buf); |
4b85d634 AM |
5519 | if (code_sec != NULL) |
5520 | { | |
5521 | asection *sec, *likely = NULL; | |
5522 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5523 | if (sec->vma <= val | |
5524 | && (sec->flags & SEC_LOAD) != 0 | |
5525 | && (sec->flags & SEC_ALLOC) != 0) | |
5526 | likely = sec; | |
5527 | if (likely != NULL) | |
5528 | { | |
5529 | *code_sec = likely; | |
5530 | if (code_off != NULL) | |
5531 | *code_off = val - likely->vma; | |
5532 | } | |
5533 | } | |
5534 | return val; | |
5535 | } | |
5536 | ||
0c8d6e5c | 5537 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5538 | |
8860955f AM |
5539 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
5540 | if (relocs == NULL) | |
5541 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 5542 | |
8387904d | 5543 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5544 | lo = relocs; |
8387904d AM |
5545 | BFD_ASSERT (lo != NULL); |
5546 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 5547 | val = (bfd_vma) -1; |
8387904d AM |
5548 | while (lo < hi) |
5549 | { | |
5550 | look = lo + (hi - lo) / 2; | |
5551 | if (look->r_offset < offset) | |
5552 | lo = look + 1; | |
5553 | else if (look->r_offset > offset) | |
5554 | hi = look; | |
5555 | else | |
5556 | { | |
0ffa91dd NC |
5557 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5558 | ||
8387904d AM |
5559 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5560 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5561 | { | |
5562 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
5563 | asection *sec; |
5564 | ||
5565 | if (symndx < symtab_hdr->sh_info) | |
5566 | { | |
5567 | Elf_Internal_Sym *sym; | |
5568 | ||
5569 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5570 | if (sym == NULL) | |
5571 | { | |
5572 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5573 | symtab_hdr->sh_info, | |
5574 | 0, NULL, NULL, NULL); | |
5575 | if (sym == NULL) | |
645ea6a9 | 5576 | break; |
8387904d AM |
5577 | symtab_hdr->contents = (bfd_byte *) sym; |
5578 | } | |
5579 | ||
5580 | sym += symndx; | |
5581 | val = sym->st_value; | |
cb33740c | 5582 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
8387904d AM |
5583 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
5584 | } | |
5585 | else | |
5586 | { | |
5587 | struct elf_link_hash_entry **sym_hashes; | |
5588 | struct elf_link_hash_entry *rh; | |
5589 | ||
5590 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5591 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5592 | rh = elf_follow_link (rh); |
8387904d AM |
5593 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined |
5594 | || rh->root.type == bfd_link_hash_defweak); | |
5595 | val = rh->root.u.def.value; | |
5596 | sec = rh->root.u.def.section; | |
5597 | } | |
5598 | val += look->r_addend; | |
5599 | if (code_off != NULL) | |
5600 | *code_off = val; | |
5601 | if (code_sec != NULL) | |
5602 | *code_sec = sec; | |
5603 | if (sec != NULL && sec->output_section != NULL) | |
5604 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5605 | } |
5606 | break; | |
5607 | } | |
5608 | } | |
645ea6a9 | 5609 | |
645ea6a9 | 5610 | return val; |
8387904d AM |
5611 | } |
5612 | ||
854b41e7 AM |
5613 | /* Return true if symbol is defined in a regular object file. */ |
5614 | ||
5615 | static bfd_boolean | |
5616 | is_static_defined (struct elf_link_hash_entry *h) | |
5617 | { | |
5618 | return ((h->root.type == bfd_link_hash_defined | |
5619 | || h->root.type == bfd_link_hash_defweak) | |
5620 | && h->root.u.def.section != NULL | |
5621 | && h->root.u.def.section->output_section != NULL); | |
5622 | } | |
5623 | ||
b31867b6 AM |
5624 | /* If FDH is a function descriptor symbol, return the associated code |
5625 | entry symbol if it is defined. Return NULL otherwise. */ | |
5626 | ||
5627 | static struct ppc_link_hash_entry * | |
5628 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5629 | { | |
5630 | if (fdh->is_func_descriptor) | |
5631 | { | |
5632 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5633 | if (fh->elf.root.type == bfd_link_hash_defined | |
5634 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5635 | return fh; | |
5636 | } | |
5637 | return NULL; | |
5638 | } | |
5639 | ||
5640 | /* If FH is a function code entry symbol, return the associated | |
5641 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5642 | ||
5643 | static struct ppc_link_hash_entry * | |
5644 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5645 | { | |
5646 | if (fh->oh != NULL | |
5647 | && fh->oh->is_func_descriptor) | |
5648 | { | |
5649 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5650 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5651 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5652 | return fdh; | |
5653 | } | |
5654 | return NULL; | |
5655 | } | |
5656 | ||
74f0fb50 AM |
5657 | /* Mark all our entry sym sections, both opd and code section. */ |
5658 | ||
5659 | static void | |
5660 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5661 | { | |
5662 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5663 | struct bfd_sym_chain *sym; | |
5664 | ||
4dfe6ac6 NC |
5665 | if (htab == NULL) |
5666 | return; | |
5667 | ||
74f0fb50 AM |
5668 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5669 | { | |
b31867b6 | 5670 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5671 | asection *sec; |
5672 | ||
5673 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 5674 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
5675 | if (eh == NULL) |
5676 | continue; | |
5677 | if (eh->elf.root.type != bfd_link_hash_defined | |
5678 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5679 | continue; | |
5680 | ||
b31867b6 AM |
5681 | fh = defined_code_entry (eh); |
5682 | if (fh != NULL) | |
74f0fb50 | 5683 | { |
b31867b6 | 5684 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5685 | sec->flags |= SEC_KEEP; |
5686 | } | |
5687 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5688 | && opd_entry_value (eh->elf.root.u.def.section, | |
5689 | eh->elf.root.u.def.value, | |
5690 | &sec, NULL) != (bfd_vma) -1) | |
5691 | sec->flags |= SEC_KEEP; | |
5692 | ||
5693 | sec = eh->elf.root.u.def.section; | |
5694 | sec->flags |= SEC_KEEP; | |
5695 | } | |
5696 | } | |
5697 | ||
64d03ab5 AM |
5698 | /* Mark sections containing dynamically referenced symbols. When |
5699 | building shared libraries, we must assume that any visible symbol is | |
5700 | referenced. */ | |
5701 | ||
5702 | static bfd_boolean | |
5703 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5704 | { | |
5705 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5706 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 5707 | struct ppc_link_hash_entry *fdh; |
64d03ab5 | 5708 | |
64d03ab5 | 5709 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5710 | fdh = defined_func_desc (eh); |
5711 | if (fdh != NULL) | |
5712 | eh = fdh; | |
64d03ab5 AM |
5713 | |
5714 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5715 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5716 | && (eh->elf.ref_dynamic | |
5717 | || (!info->executable | |
5718 | && eh->elf.def_regular | |
5719 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
4c58e0d8 AM |
5720 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
5721 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL | |
5722 | || !bfd_hide_sym_by_version (info->version_info, | |
5723 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5724 | { |
5725 | asection *code_sec; | |
b31867b6 | 5726 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5727 | |
5728 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5729 | ||
5730 | /* Function descriptor syms cause the associated | |
5731 | function code sym section to be marked. */ | |
b31867b6 AM |
5732 | fh = defined_code_entry (eh); |
5733 | if (fh != NULL) | |
5734 | { | |
5735 | code_sec = fh->elf.root.u.def.section; | |
5736 | code_sec->flags |= SEC_KEEP; | |
5737 | } | |
64d03ab5 AM |
5738 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5739 | && opd_entry_value (eh->elf.root.u.def.section, | |
5740 | eh->elf.root.u.def.value, | |
5741 | &code_sec, NULL) != (bfd_vma) -1) | |
5742 | code_sec->flags |= SEC_KEEP; | |
5743 | } | |
5744 | ||
5745 | return TRUE; | |
5746 | } | |
5747 | ||
5bd4f169 AM |
5748 | /* Return the section that should be marked against GC for a given |
5749 | relocation. */ | |
5750 | ||
5751 | static asection * | |
4ce794b7 | 5752 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5753 | struct bfd_link_info *info, |
4ce794b7 AM |
5754 | Elf_Internal_Rela *rel, |
5755 | struct elf_link_hash_entry *h, | |
5756 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5757 | { |
ccfa59ea AM |
5758 | asection *rsec; |
5759 | ||
ccfa59ea AM |
5760 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5761 | function sections, as all functions are referenced in .opd. */ | |
5762 | rsec = NULL; | |
5763 | if (get_opd_info (sec) != NULL) | |
5764 | return rsec; | |
1e2f5b6e | 5765 | |
5bd4f169 AM |
5766 | if (h != NULL) |
5767 | { | |
04c9666a | 5768 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5769 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5770 | |
4ce794b7 | 5771 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5772 | switch (r_type) |
5bd4f169 AM |
5773 | { |
5774 | case R_PPC64_GNU_VTINHERIT: | |
5775 | case R_PPC64_GNU_VTENTRY: | |
5776 | break; | |
5777 | ||
5778 | default: | |
5779 | switch (h->root.type) | |
5780 | { | |
5781 | case bfd_link_hash_defined: | |
5782 | case bfd_link_hash_defweak: | |
ccfa59ea | 5783 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
5784 | fdh = defined_func_desc (eh); |
5785 | if (fdh != NULL) | |
5786 | eh = fdh; | |
1e2f5b6e AM |
5787 | |
5788 | /* Function descriptor syms cause the associated | |
5789 | function code sym section to be marked. */ | |
b31867b6 AM |
5790 | fh = defined_code_entry (eh); |
5791 | if (fh != NULL) | |
ccfa59ea AM |
5792 | { |
5793 | /* They also mark their opd section. */ | |
74f0fb50 | 5794 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5795 | |
b31867b6 | 5796 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5797 | } |
8387904d AM |
5798 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5799 | && opd_entry_value (eh->elf.root.u.def.section, | |
5800 | eh->elf.root.u.def.value, | |
5801 | &rsec, NULL) != (bfd_vma) -1) | |
74f0fb50 | 5802 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5803 | else |
1e2f5b6e AM |
5804 | rsec = h->root.u.def.section; |
5805 | break; | |
5bd4f169 AM |
5806 | |
5807 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5808 | rsec = h->root.u.c.p->section; |
5809 | break; | |
5bd4f169 AM |
5810 | |
5811 | default: | |
fb34365b | 5812 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5813 | } |
5814 | } | |
5815 | } | |
5816 | else | |
5817 | { | |
74f0fb50 | 5818 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5819 | |
5820 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5821 | opd = get_opd_info (rsec); |
5822 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5823 | { |
74f0fb50 | 5824 | rsec->gc_mark = 1; |
ccfa59ea | 5825 | |
74f0fb50 | 5826 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5827 | } |
5bd4f169 AM |
5828 | } |
5829 | ||
1e2f5b6e | 5830 | return rsec; |
5bd4f169 AM |
5831 | } |
5832 | ||
65f38f15 AM |
5833 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5834 | section being removed. */ | |
5bd4f169 | 5835 | |
b34976b6 | 5836 | static bfd_boolean |
4ce794b7 AM |
5837 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5838 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5839 | { |
411e1bfb | 5840 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5841 | Elf_Internal_Shdr *symtab_hdr; |
5842 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5843 | struct got_entry **local_got_ents; |
5bd4f169 | 5844 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5845 | |
7dda2462 TG |
5846 | if (info->relocatable) |
5847 | return TRUE; | |
5848 | ||
680a3378 AM |
5849 | if ((sec->flags & SEC_ALLOC) == 0) |
5850 | return TRUE; | |
5851 | ||
ec338859 AM |
5852 | elf_section_data (sec)->local_dynrel = NULL; |
5853 | ||
411e1bfb | 5854 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5855 | if (htab == NULL) |
5856 | return FALSE; | |
5857 | ||
0ffa91dd | 5858 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5859 | sym_hashes = elf_sym_hashes (abfd); |
411e1bfb | 5860 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5861 | |
5862 | relend = relocs + sec->reloc_count; | |
5863 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5864 | { |
5865 | unsigned long r_symndx; | |
04c9666a | 5866 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5867 | struct elf_link_hash_entry *h = NULL; |
f961d9dd | 5868 | unsigned char tls_type = 0; |
5bd4f169 | 5869 | |
a33d1f77 | 5870 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5871 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5872 | if (r_symndx >= symtab_hdr->sh_info) |
5873 | { | |
5874 | struct ppc_link_hash_entry *eh; | |
6061a67d AM |
5875 | struct elf_dyn_relocs **pp; |
5876 | struct elf_dyn_relocs *p; | |
58ac9f71 AM |
5877 | |
5878 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5879 | h = elf_follow_link (h); |
58ac9f71 AM |
5880 | eh = (struct ppc_link_hash_entry *) h; |
5881 | ||
5882 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5883 | if (p->sec == sec) | |
5884 | { | |
5885 | /* Everything must go for SEC. */ | |
5886 | *pp = p->next; | |
5887 | break; | |
5888 | } | |
5889 | } | |
5890 | ||
e054468f AM |
5891 | if (is_branch_reloc (r_type)) |
5892 | { | |
5893 | struct plt_entry **ifunc = NULL; | |
5894 | if (h != NULL) | |
5895 | { | |
5896 | if (h->type == STT_GNU_IFUNC) | |
5897 | ifunc = &h->plt.plist; | |
5898 | } | |
5899 | else if (local_got_ents != NULL) | |
5900 | { | |
5901 | struct plt_entry **local_plt = (struct plt_entry **) | |
5902 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 5903 | unsigned char *local_got_tls_masks = (unsigned char *) |
e054468f AM |
5904 | (local_plt + symtab_hdr->sh_info); |
5905 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
5906 | ifunc = local_plt + r_symndx; | |
5907 | } | |
5908 | if (ifunc != NULL) | |
5909 | { | |
5910 | struct plt_entry *ent; | |
5911 | ||
5912 | for (ent = *ifunc; ent != NULL; ent = ent->next) | |
5913 | if (ent->addend == rel->r_addend) | |
5914 | break; | |
5915 | if (ent == NULL) | |
5916 | abort (); | |
5917 | if (ent->plt.refcount > 0) | |
5918 | ent->plt.refcount -= 1; | |
5919 | continue; | |
5920 | } | |
5921 | } | |
5922 | ||
a33d1f77 AM |
5923 | switch (r_type) |
5924 | { | |
411e1bfb AM |
5925 | case R_PPC64_GOT_TLSLD16: |
5926 | case R_PPC64_GOT_TLSLD16_LO: | |
5927 | case R_PPC64_GOT_TLSLD16_HI: | |
5928 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5929 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5930 | goto dogot; |
5931 | ||
5932 | case R_PPC64_GOT_TLSGD16: | |
5933 | case R_PPC64_GOT_TLSGD16_LO: | |
5934 | case R_PPC64_GOT_TLSGD16_HI: | |
5935 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5936 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5937 | goto dogot; |
5938 | ||
5939 | case R_PPC64_GOT_TPREL16_DS: | |
5940 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5941 | case R_PPC64_GOT_TPREL16_HI: | |
5942 | case R_PPC64_GOT_TPREL16_HA: | |
5943 | tls_type = TLS_TLS | TLS_TPREL; | |
5944 | goto dogot; | |
5945 | ||
5946 | case R_PPC64_GOT_DTPREL16_DS: | |
5947 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5948 | case R_PPC64_GOT_DTPREL16_HI: | |
5949 | case R_PPC64_GOT_DTPREL16_HA: | |
5950 | tls_type = TLS_TLS | TLS_DTPREL; | |
5951 | goto dogot; | |
5952 | ||
a33d1f77 AM |
5953 | case R_PPC64_GOT16: |
5954 | case R_PPC64_GOT16_DS: | |
5955 | case R_PPC64_GOT16_HA: | |
5956 | case R_PPC64_GOT16_HI: | |
5957 | case R_PPC64_GOT16_LO: | |
5958 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5959 | dogot: |
5960 | { | |
5961 | struct got_entry *ent; | |
5962 | ||
58ac9f71 AM |
5963 | if (h != NULL) |
5964 | ent = h->got.glist; | |
411e1bfb AM |
5965 | else |
5966 | ent = local_got_ents[r_symndx]; | |
5967 | ||
5968 | for (; ent != NULL; ent = ent->next) | |
5969 | if (ent->addend == rel->r_addend | |
e717da7e | 5970 | && ent->owner == abfd |
411e1bfb AM |
5971 | && ent->tls_type == tls_type) |
5972 | break; | |
5973 | if (ent == NULL) | |
5974 | abort (); | |
5975 | if (ent->got.refcount > 0) | |
5976 | ent->got.refcount -= 1; | |
5977 | } | |
a33d1f77 | 5978 | break; |
65f38f15 | 5979 | |
a33d1f77 AM |
5980 | case R_PPC64_PLT16_HA: |
5981 | case R_PPC64_PLT16_HI: | |
5982 | case R_PPC64_PLT16_LO: | |
5983 | case R_PPC64_PLT32: | |
5984 | case R_PPC64_PLT64: | |
721956f4 AM |
5985 | case R_PPC64_REL14: |
5986 | case R_PPC64_REL14_BRNTAKEN: | |
5987 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5988 | case R_PPC64_REL24: |
58ac9f71 | 5989 | if (h != NULL) |
5d1634d7 | 5990 | { |
411e1bfb AM |
5991 | struct plt_entry *ent; |
5992 | ||
411e1bfb AM |
5993 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5994 | if (ent->addend == rel->r_addend) | |
5995 | break; | |
7c6c1722 | 5996 | if (ent != NULL && ent->plt.refcount > 0) |
411e1bfb | 5997 | ent->plt.refcount -= 1; |
5d1634d7 | 5998 | } |
e86ce104 | 5999 | break; |
5d1634d7 | 6000 | |
a33d1f77 AM |
6001 | default: |
6002 | break; | |
6003 | } | |
6004 | } | |
b34976b6 | 6005 | return TRUE; |
5bd4f169 AM |
6006 | } |
6007 | ||
deb0e272 AM |
6008 | /* The maximum size of .sfpr. */ |
6009 | #define SFPR_MAX (218*4) | |
6010 | ||
6011 | struct sfpr_def_parms | |
6012 | { | |
699733f6 AM |
6013 | const char name[12]; |
6014 | unsigned char lo, hi; | |
deb0e272 AM |
6015 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6016 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6017 | }; | |
6018 | ||
6019 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
6020 | ||
4dfe6ac6 | 6021 | static bfd_boolean |
deb0e272 AM |
6022 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) |
6023 | { | |
6024 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6025 | unsigned int i; | |
6026 | size_t len = strlen (parm->name); | |
6027 | bfd_boolean writing = FALSE; | |
699733f6 | 6028 | char sym[16]; |
deb0e272 | 6029 | |
4dfe6ac6 NC |
6030 | if (htab == NULL) |
6031 | return FALSE; | |
6032 | ||
deb0e272 AM |
6033 | memcpy (sym, parm->name, len); |
6034 | sym[len + 2] = 0; | |
6035 | ||
6036 | for (i = parm->lo; i <= parm->hi; i++) | |
6037 | { | |
6038 | struct elf_link_hash_entry *h; | |
6039 | ||
6040 | sym[len + 0] = i / 10 + '0'; | |
6041 | sym[len + 1] = i % 10 + '0'; | |
6042 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
6043 | if (h != NULL | |
f5385ebf | 6044 | && !h->def_regular) |
deb0e272 AM |
6045 | { |
6046 | h->root.type = bfd_link_hash_defined; | |
6047 | h->root.u.def.section = htab->sfpr; | |
6048 | h->root.u.def.value = htab->sfpr->size; | |
6049 | h->type = STT_FUNC; | |
f5385ebf | 6050 | h->def_regular = 1; |
deb0e272 AM |
6051 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
6052 | writing = TRUE; | |
6053 | if (htab->sfpr->contents == NULL) | |
6054 | { | |
6055 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6056 | if (htab->sfpr->contents == NULL) | |
6057 | return FALSE; | |
6058 | } | |
6059 | } | |
6060 | if (writing) | |
6061 | { | |
6062 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6063 | if (i != parm->hi) | |
6064 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6065 | else | |
6066 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6067 | htab->sfpr->size = p - htab->sfpr->contents; | |
6068 | } | |
6069 | } | |
6070 | ||
6071 | return TRUE; | |
6072 | } | |
6073 | ||
6074 | static bfd_byte * | |
6075 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6076 | { | |
6077 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6078 | return p + 4; | |
6079 | } | |
6080 | ||
6081 | static bfd_byte * | |
6082 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6083 | { | |
6084 | p = savegpr0 (abfd, p, r); | |
6085 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6086 | p = p + 4; | |
6087 | bfd_put_32 (abfd, BLR, p); | |
6088 | return p + 4; | |
6089 | } | |
6090 | ||
6091 | static bfd_byte * | |
6092 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6093 | { | |
6094 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6095 | return p + 4; | |
6096 | } | |
6097 | ||
6098 | static bfd_byte * | |
6099 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6100 | { | |
6101 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6102 | p = p + 4; | |
6103 | p = restgpr0 (abfd, p, r); | |
6104 | bfd_put_32 (abfd, MTLR_R0, p); | |
6105 | p = p + 4; | |
6106 | if (r == 29) | |
6107 | { | |
6108 | p = restgpr0 (abfd, p, 30); | |
6109 | p = restgpr0 (abfd, p, 31); | |
6110 | } | |
6111 | bfd_put_32 (abfd, BLR, p); | |
6112 | return p + 4; | |
6113 | } | |
6114 | ||
6115 | static bfd_byte * | |
6116 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6117 | { | |
6118 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6119 | return p + 4; | |
6120 | } | |
6121 | ||
6122 | static bfd_byte * | |
6123 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6124 | { | |
6125 | p = savegpr1 (abfd, p, r); | |
6126 | bfd_put_32 (abfd, BLR, p); | |
6127 | return p + 4; | |
6128 | } | |
6129 | ||
6130 | static bfd_byte * | |
6131 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6132 | { | |
6133 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6134 | return p + 4; | |
6135 | } | |
6136 | ||
6137 | static bfd_byte * | |
6138 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6139 | { | |
6140 | p = restgpr1 (abfd, p, r); | |
6141 | bfd_put_32 (abfd, BLR, p); | |
6142 | return p + 4; | |
6143 | } | |
6144 | ||
6145 | static bfd_byte * | |
6146 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6147 | { | |
6148 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6149 | return p + 4; | |
6150 | } | |
6151 | ||
6152 | static bfd_byte * | |
6153 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6154 | { | |
6155 | p = savefpr (abfd, p, r); | |
6156 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
6157 | p = p + 4; | |
6158 | bfd_put_32 (abfd, BLR, p); | |
6159 | return p + 4; | |
6160 | } | |
6161 | ||
6162 | static bfd_byte * | |
6163 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6164 | { | |
6165 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6166 | return p + 4; | |
6167 | } | |
6168 | ||
6169 | static bfd_byte * | |
6170 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6171 | { | |
6172 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
6173 | p = p + 4; | |
6174 | p = restfpr (abfd, p, r); | |
6175 | bfd_put_32 (abfd, MTLR_R0, p); | |
6176 | p = p + 4; | |
6177 | if (r == 29) | |
6178 | { | |
6179 | p = restfpr (abfd, p, 30); | |
6180 | p = restfpr (abfd, p, 31); | |
6181 | } | |
6182 | bfd_put_32 (abfd, BLR, p); | |
6183 | return p + 4; | |
6184 | } | |
6185 | ||
6186 | static bfd_byte * | |
6187 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6188 | { | |
6189 | p = savefpr (abfd, p, r); | |
6190 | bfd_put_32 (abfd, BLR, p); | |
6191 | return p + 4; | |
6192 | } | |
6193 | ||
6194 | static bfd_byte * | |
6195 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6196 | { | |
6197 | p = restfpr (abfd, p, r); | |
6198 | bfd_put_32 (abfd, BLR, p); | |
6199 | return p + 4; | |
6200 | } | |
6201 | ||
6202 | static bfd_byte * | |
6203 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6204 | { | |
6205 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6206 | p = p + 4; | |
6207 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6208 | return p + 4; | |
6209 | } | |
6210 | ||
6211 | static bfd_byte * | |
6212 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6213 | { | |
6214 | p = savevr (abfd, p, r); | |
6215 | bfd_put_32 (abfd, BLR, p); | |
6216 | return p + 4; | |
6217 | } | |
6218 | ||
6219 | static bfd_byte * | |
6220 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6221 | { | |
6222 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6223 | p = p + 4; | |
6224 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6225 | return p + 4; | |
6226 | } | |
6227 | ||
6228 | static bfd_byte * | |
6229 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6230 | { | |
6231 | p = restvr (abfd, p, r); | |
6232 | bfd_put_32 (abfd, BLR, p); | |
6233 | return p + 4; | |
6234 | } | |
6235 | ||
e86ce104 AM |
6236 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6237 | information on function code symbol entries to their corresponding | |
6238 | function descriptor symbol entries. */ | |
deb0e272 | 6239 | |
b34976b6 | 6240 | static bfd_boolean |
4ce794b7 | 6241 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6242 | { |
e86ce104 | 6243 | struct bfd_link_info *info; |
65f38f15 | 6244 | struct ppc_link_hash_table *htab; |
411e1bfb | 6245 | struct plt_entry *ent; |
50bc7936 AM |
6246 | struct ppc_link_hash_entry *fh; |
6247 | struct ppc_link_hash_entry *fdh; | |
6248 | bfd_boolean force_local; | |
5bd4f169 | 6249 | |
50bc7936 AM |
6250 | fh = (struct ppc_link_hash_entry *) h; |
6251 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6252 | return TRUE; |
e86ce104 | 6253 | |
4ce794b7 | 6254 | info = inf; |
65f38f15 | 6255 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6256 | if (htab == NULL) |
6257 | return FALSE; | |
5bd4f169 | 6258 | |
c09bdfe5 AM |
6259 | /* Resolve undefined references to dot-symbols as the value |
6260 | in the function descriptor, if we have one in a regular object. | |
6261 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6262 | in dynamic objects are handled elsewhere. */ | |
6263 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
6264 | && fh->was_undefined | |
b31867b6 AM |
6265 | && (fdh = defined_func_desc (fh)) != NULL |
6266 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
6267 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6268 | fdh->elf.root.u.def.value, | |
c09bdfe5 AM |
6269 | &fh->elf.root.u.def.section, |
6270 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
6271 | { | |
b31867b6 | 6272 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6273 | fh->elf.forced_local = 1; |
b31867b6 AM |
6274 | fh->elf.def_regular = fdh->elf.def_regular; |
6275 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6276 | } |
6277 | ||
e86ce104 AM |
6278 | /* If this is a function code symbol, transfer dynamic linking |
6279 | information to the function descriptor symbol. */ | |
50bc7936 | 6280 | if (!fh->is_func) |
b34976b6 | 6281 | return TRUE; |
e86ce104 | 6282 | |
50bc7936 | 6283 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
6284 | if (ent->plt.refcount > 0) |
6285 | break; | |
50bc7936 AM |
6286 | if (ent == NULL |
6287 | || fh->elf.root.root.string[0] != '.' | |
6288 | || fh->elf.root.root.string[1] == '\0') | |
6289 | return TRUE; | |
5bd4f169 | 6290 | |
50bc7936 AM |
6291 | /* Find the corresponding function descriptor symbol. Create it |
6292 | as undefined if necessary. */ | |
5bd4f169 | 6293 | |
b31867b6 | 6294 | fdh = lookup_fdh (fh, htab); |
50bc7936 | 6295 | if (fdh == NULL |
df131623 | 6296 | && !info->executable |
50bc7936 AM |
6297 | && (fh->elf.root.type == bfd_link_hash_undefined |
6298 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6299 | { | |
908b32fc | 6300 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6301 | if (fdh == NULL) |
6302 | return FALSE; | |
50bc7936 | 6303 | } |
648cca2c | 6304 | |
908b32fc | 6305 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
6306 | code symbol is strong undefined, make the fake sym the same. |
6307 | If the function code symbol is defined, then force the fake | |
6308 | descriptor local; We can't support overriding of symbols in a | |
6309 | shared library on a fake descriptor. */ | |
908b32fc AM |
6310 | |
6311 | if (fdh != NULL | |
6312 | && fdh->fake | |
433817dd | 6313 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 6314 | { |
433817dd AM |
6315 | if (fh->elf.root.type == bfd_link_hash_undefined) |
6316 | { | |
6317 | fdh->elf.root.type = bfd_link_hash_undefined; | |
6318 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
6319 | } | |
6320 | else if (fh->elf.root.type == bfd_link_hash_defined | |
6321 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6322 | { | |
6323 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
6324 | } | |
908b32fc AM |
6325 | } |
6326 | ||
50bc7936 | 6327 | if (fdh != NULL |
f5385ebf | 6328 | && !fdh->elf.forced_local |
df131623 | 6329 | && (!info->executable |
f5385ebf AM |
6330 | || fdh->elf.def_dynamic |
6331 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
6332 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
6333 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
6334 | { | |
6335 | if (fdh->elf.dynindx == -1) | |
c152c796 | 6336 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 6337 | return FALSE; |
f5385ebf AM |
6338 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6339 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6340 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6341 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 6342 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 6343 | { |
40d16e0b | 6344 | move_plt_plist (fh, fdh); |
f5385ebf | 6345 | fdh->elf.needs_plt = 1; |
e86ce104 | 6346 | } |
50bc7936 | 6347 | fdh->is_func_descriptor = 1; |
34814b9f AM |
6348 | fdh->oh = fh; |
6349 | fh->oh = fdh; | |
e86ce104 AM |
6350 | } |
6351 | ||
50bc7936 AM |
6352 | /* Now that the info is on the function descriptor, clear the |
6353 | function code sym info. Any function code syms for which we | |
6354 | don't have a definition in a regular file, we force local. | |
6355 | This prevents a shared library from exporting syms that have | |
6356 | been imported from another library. Function code syms that | |
6357 | are really in the library we must leave global to prevent the | |
6358 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6359 | force_local = (!fh->elf.def_regular |
6360 | || fdh == NULL | |
6361 | || !fdh->elf.def_regular | |
6362 | || fdh->elf.forced_local); | |
50bc7936 AM |
6363 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6364 | ||
b34976b6 | 6365 | return TRUE; |
e86ce104 | 6366 | } |
40b8271b | 6367 | |
e86ce104 | 6368 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6369 | this hook to a) provide some gcc support functions, and b) transfer |
6370 | dynamic linking information gathered so far on function code symbol | |
6371 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6372 | |
b34976b6 | 6373 | static bfd_boolean |
4ce794b7 AM |
6374 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6375 | struct bfd_link_info *info) | |
e86ce104 AM |
6376 | { |
6377 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 6378 | unsigned int i; |
deb0e272 AM |
6379 | const struct sfpr_def_parms funcs[] = |
6380 | { | |
6381 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6382 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6383 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6384 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6385 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6386 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6387 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6388 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6389 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6390 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6391 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6392 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6393 | }; | |
e86ce104 AM |
6394 | |
6395 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6396 | if (htab == NULL) |
6397 | return FALSE; | |
6398 | ||
82bd7b59 AM |
6399 | if (htab->sfpr == NULL) |
6400 | /* We don't have any relocs. */ | |
b34976b6 | 6401 | return TRUE; |
82bd7b59 | 6402 | |
deb0e272 AM |
6403 | /* Provide any missing _save* and _rest* functions. */ |
6404 | htab->sfpr->size = 0; | |
6405 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
6406 | if (!sfpr_define (info, &funcs[i])) | |
6407 | return FALSE; | |
82bd7b59 | 6408 | |
4ce794b7 | 6409 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 6410 | |
eea6121a | 6411 | if (htab->sfpr->size == 0) |
8423293d | 6412 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 6413 | |
b34976b6 | 6414 | return TRUE; |
e86ce104 AM |
6415 | } |
6416 | ||
6417 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
6418 | regular object. The current definition is in some section of the | |
6419 | dynamic object, but we're not including those sections. We have to | |
6420 | change the definition to something the rest of the link can | |
6421 | understand. */ | |
6422 | ||
b34976b6 | 6423 | static bfd_boolean |
4ce794b7 AM |
6424 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6425 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6426 | { |
6427 | struct ppc_link_hash_table *htab; | |
e86ce104 | 6428 | asection *s; |
e86ce104 AM |
6429 | |
6430 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6431 | if (htab == NULL) |
6432 | return FALSE; | |
e86ce104 AM |
6433 | |
6434 | /* Deal with function syms. */ | |
6435 | if (h->type == STT_FUNC | |
e054468f | 6436 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6437 | || h->needs_plt) |
e86ce104 AM |
6438 | { |
6439 | /* Clear procedure linkage table information for any symbol that | |
6440 | won't need a .plt entry. */ | |
411e1bfb AM |
6441 | struct plt_entry *ent; |
6442 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6443 | if (ent->plt.refcount > 0) | |
6444 | break; | |
8387904d | 6445 | if (ent == NULL |
e054468f AM |
6446 | || (h->type != STT_GNU_IFUNC |
6447 | && (SYMBOL_CALLS_LOCAL (info, h) | |
6448 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6449 | && h->root.type == bfd_link_hash_undefweak)))) | |
40b8271b | 6450 | { |
411e1bfb | 6451 | h->plt.plist = NULL; |
f5385ebf | 6452 | h->needs_plt = 0; |
40b8271b | 6453 | } |
5bd4f169 | 6454 | } |
bbd7ec4a | 6455 | else |
411e1bfb | 6456 | h->plt.plist = NULL; |
5bd4f169 AM |
6457 | |
6458 | /* If this is a weak symbol, and there is a real definition, the | |
6459 | processor independent code will have arranged for us to see the | |
6460 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 6461 | if (h->u.weakdef != NULL) |
5bd4f169 | 6462 | { |
f6e332e6 AM |
6463 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
6464 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
6465 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
6466 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 6467 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 6468 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 6469 | return TRUE; |
5bd4f169 AM |
6470 | } |
6471 | ||
5bd4f169 AM |
6472 | /* If we are creating a shared library, we must presume that the |
6473 | only references to the symbol are via the global offset table. | |
6474 | For such cases we need not do anything here; the relocations will | |
6475 | be handled correctly by relocate_section. */ | |
6476 | if (info->shared) | |
b34976b6 | 6477 | return TRUE; |
5bd4f169 | 6478 | |
65f38f15 AM |
6479 | /* If there are no references to this symbol that do not use the |
6480 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6481 | if (!h->non_got_ref) |
b34976b6 | 6482 | return TRUE; |
65f38f15 | 6483 | |
b186458a JJ |
6484 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
6485 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
6486 | return TRUE; | |
6487 | ||
f4656909 | 6488 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 6489 | { |
f4656909 | 6490 | struct ppc_link_hash_entry * eh; |
6061a67d | 6491 | struct elf_dyn_relocs *p; |
65f38f15 | 6492 | |
f4656909 AM |
6493 | eh = (struct ppc_link_hash_entry *) h; |
6494 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6495 | { | |
6496 | s = p->sec->output_section; | |
6497 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6498 | break; | |
6499 | } | |
6500 | ||
6501 | /* If we didn't find any dynamic relocs in read-only sections, then | |
6502 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
6503 | if (p == NULL) | |
6504 | { | |
f5385ebf | 6505 | h->non_got_ref = 0; |
f4656909 AM |
6506 | return TRUE; |
6507 | } | |
65f38f15 AM |
6508 | } |
6509 | ||
5d35169e | 6510 | if (h->plt.plist != NULL) |
97b639ba AM |
6511 | { |
6512 | /* We should never get here, but unfortunately there are versions | |
6513 | of gcc out there that improperly (for this ABI) put initialized | |
6514 | function pointers, vtable refs and suchlike in read-only | |
6515 | sections. Allow them to proceed, but warn that this might | |
6516 | break at runtime. */ | |
25f53a85 | 6517 | info->callbacks->einfo |
8de848d8 | 6518 | (_("%P: copy reloc against `%s' requires lazy plt linking; " |
25f53a85 | 6519 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6520 | h->root.root.string); |
6521 | } | |
5d35169e AM |
6522 | |
6523 | /* This is a reference to a symbol defined by a dynamic object which | |
6524 | is not a function. */ | |
6525 | ||
909272ee AM |
6526 | if (h->size == 0) |
6527 | { | |
8de848d8 | 6528 | info->callbacks->einfo (_("%P: dynamic variable `%s' is zero size\n"), |
25f53a85 | 6529 | h->root.root.string); |
909272ee AM |
6530 | return TRUE; |
6531 | } | |
6532 | ||
5bd4f169 AM |
6533 | /* We must allocate the symbol in our .dynbss section, which will |
6534 | become part of the .bss section of the executable. There will be | |
6535 | an entry for this symbol in the .dynsym section. The dynamic | |
6536 | object will contain position independent code, so all references | |
6537 | from the dynamic object to this symbol will go through the global | |
6538 | offset table. The dynamic linker will use the .dynsym entry to | |
6539 | determine the address it must put in the global offset table, so | |
6540 | both the dynamic object and the regular object will refer to the | |
6541 | same memory location for the variable. */ | |
5bd4f169 | 6542 | |
04c9666a AM |
6543 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
6544 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
6545 | runtime process image. We need to remember the offset into the |
6546 | .rela.bss section we are going to use. */ | |
6547 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
6548 | { | |
eea6121a | 6549 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6550 | h->needs_copy = 1; |
5bd4f169 AM |
6551 | } |
6552 | ||
4ce794b7 | 6553 | s = htab->dynbss; |
5bd4f169 | 6554 | |
027297b7 | 6555 | return _bfd_elf_adjust_dynamic_copy (h, s); |
5bd4f169 AM |
6556 | } |
6557 | ||
e86ce104 AM |
6558 | /* If given a function descriptor symbol, hide both the function code |
6559 | sym and the descriptor. */ | |
6560 | static void | |
4ce794b7 AM |
6561 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6562 | struct elf_link_hash_entry *h, | |
6563 | bfd_boolean force_local) | |
e86ce104 | 6564 | { |
34814b9f | 6565 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6566 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6567 | ||
34814b9f AM |
6568 | eh = (struct ppc_link_hash_entry *) h; |
6569 | if (eh->is_func_descriptor) | |
e86ce104 | 6570 | { |
34814b9f | 6571 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6572 | |
721956f4 | 6573 | if (fh == NULL) |
d1329ca3 AM |
6574 | { |
6575 | const char *p, *q; | |
6576 | struct ppc_link_hash_table *htab; | |
6577 | char save; | |
6578 | ||
6579 | /* We aren't supposed to use alloca in BFD because on | |
6580 | systems which do not have alloca the version in libiberty | |
6581 | calls xmalloc, which might cause the program to crash | |
6582 | when it runs out of memory. This function doesn't have a | |
6583 | return status, so there's no way to gracefully return an | |
6584 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6585 | accessed; It's either a string in an ELF string table, |
6586 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6587 | |
34814b9f | 6588 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6589 | save = *p; |
6590 | *(char *) p = '.'; | |
6591 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6592 | if (htab == NULL) |
6593 | return; | |
6594 | ||
34814b9f AM |
6595 | fh = (struct ppc_link_hash_entry *) |
6596 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6597 | *(char *) p = save; |
6598 | ||
6599 | /* Unfortunately, if it so happens that the string we were | |
6600 | looking for was allocated immediately before this string, | |
6601 | then we overwrote the string terminator. That's the only | |
6602 | reason the lookup should fail. */ | |
6603 | if (fh == NULL) | |
6604 | { | |
34814b9f AM |
6605 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6606 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6607 | --q, --p; |
34814b9f AM |
6608 | if (q < eh->elf.root.root.string && *p == '.') |
6609 | fh = (struct ppc_link_hash_entry *) | |
6610 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
6611 | } |
6612 | if (fh != NULL) | |
6613 | { | |
34814b9f AM |
6614 | eh->oh = fh; |
6615 | fh->oh = eh; | |
d1329ca3 AM |
6616 | } |
6617 | } | |
e86ce104 | 6618 | if (fh != NULL) |
34814b9f | 6619 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6620 | } |
6621 | } | |
6622 | ||
411e1bfb | 6623 | static bfd_boolean |
8843416a AM |
6624 | get_sym_h (struct elf_link_hash_entry **hp, |
6625 | Elf_Internal_Sym **symp, | |
6626 | asection **symsecp, | |
f961d9dd | 6627 | unsigned char **tls_maskp, |
8843416a AM |
6628 | Elf_Internal_Sym **locsymsp, |
6629 | unsigned long r_symndx, | |
6630 | bfd *ibfd) | |
411e1bfb | 6631 | { |
0ffa91dd | 6632 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6633 | |
6634 | if (r_symndx >= symtab_hdr->sh_info) | |
6635 | { | |
6636 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6637 | struct elf_link_hash_entry *h; | |
6638 | ||
6639 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6640 | h = elf_follow_link (h); |
411e1bfb AM |
6641 | |
6642 | if (hp != NULL) | |
6643 | *hp = h; | |
6644 | ||
6645 | if (symp != NULL) | |
6646 | *symp = NULL; | |
6647 | ||
6648 | if (symsecp != NULL) | |
6649 | { | |
6650 | asection *symsec = NULL; | |
6651 | if (h->root.type == bfd_link_hash_defined | |
6652 | || h->root.type == bfd_link_hash_defweak) | |
6653 | symsec = h->root.u.def.section; | |
6654 | *symsecp = symsec; | |
6655 | } | |
6656 | ||
e7b938ca | 6657 | if (tls_maskp != NULL) |
411e1bfb AM |
6658 | { |
6659 | struct ppc_link_hash_entry *eh; | |
6660 | ||
6661 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6662 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6663 | } |
6664 | } | |
6665 | else | |
6666 | { | |
6667 | Elf_Internal_Sym *sym; | |
6668 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6669 | ||
6670 | if (locsyms == NULL) | |
6671 | { | |
6672 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6673 | if (locsyms == NULL) | |
6674 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6675 | symtab_hdr->sh_info, | |
6676 | 0, NULL, NULL, NULL); | |
6677 | if (locsyms == NULL) | |
6678 | return FALSE; | |
6679 | *locsymsp = locsyms; | |
6680 | } | |
6681 | sym = locsyms + r_symndx; | |
6682 | ||
6683 | if (hp != NULL) | |
6684 | *hp = NULL; | |
6685 | ||
6686 | if (symp != NULL) | |
6687 | *symp = sym; | |
6688 | ||
6689 | if (symsecp != NULL) | |
cb33740c | 6690 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6691 | |
e7b938ca | 6692 | if (tls_maskp != NULL) |
411e1bfb AM |
6693 | { |
6694 | struct got_entry **lgot_ents; | |
f961d9dd | 6695 | unsigned char *tls_mask; |
411e1bfb | 6696 | |
e7b938ca | 6697 | tls_mask = NULL; |
411e1bfb AM |
6698 | lgot_ents = elf_local_got_ents (ibfd); |
6699 | if (lgot_ents != NULL) | |
6700 | { | |
e054468f AM |
6701 | struct plt_entry **local_plt = (struct plt_entry **) |
6702 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6703 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6704 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6705 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6706 | } |
e7b938ca | 6707 | *tls_maskp = tls_mask; |
411e1bfb AM |
6708 | } |
6709 | } | |
6710 | return TRUE; | |
6711 | } | |
6712 | ||
e7b938ca | 6713 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6714 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6715 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6716 | |
6717 | static int | |
f961d9dd | 6718 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6719 | unsigned long *toc_symndx, |
6720 | bfd_vma *toc_addend, | |
0d4792f7 | 6721 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6722 | const Elf_Internal_Rela *rel, |
6723 | bfd *ibfd) | |
411e1bfb AM |
6724 | { |
6725 | unsigned long r_symndx; | |
0d4792f7 | 6726 | int next_r; |
411e1bfb AM |
6727 | struct elf_link_hash_entry *h; |
6728 | Elf_Internal_Sym *sym; | |
6729 | asection *sec; | |
6730 | bfd_vma off; | |
6731 | ||
6732 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6733 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6734 | return 0; |
411e1bfb | 6735 | |
e7b938ca | 6736 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6737 | || sec == NULL |
6bee8834 | 6738 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6739 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6740 | return 1; |
411e1bfb AM |
6741 | |
6742 | /* Look inside a TOC section too. */ | |
6743 | if (h != NULL) | |
6744 | { | |
6745 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6746 | off = h->root.u.def.value; | |
6747 | } | |
6748 | else | |
6749 | off = sym->st_value; | |
6750 | off += rel->r_addend; | |
6751 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6752 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6753 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6754 | if (toc_symndx != NULL) |
6755 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6756 | if (toc_addend != NULL) |
6757 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6758 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6759 | return 0; | |
854b41e7 | 6760 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6761 | && (next_r == -1 || next_r == -2)) |
6762 | return 1 - next_r; | |
951fd09b | 6763 | return 1; |
411e1bfb AM |
6764 | } |
6765 | ||
3b421ab3 AM |
6766 | /* Find (or create) an entry in the tocsave hash table. */ |
6767 | ||
6768 | static struct tocsave_entry * | |
6769 | tocsave_find (struct ppc_link_hash_table *htab, | |
6770 | enum insert_option insert, | |
6771 | Elf_Internal_Sym **local_syms, | |
6772 | const Elf_Internal_Rela *irela, | |
6773 | bfd *ibfd) | |
6774 | { | |
6775 | unsigned long r_indx; | |
6776 | struct elf_link_hash_entry *h; | |
6777 | Elf_Internal_Sym *sym; | |
6778 | struct tocsave_entry ent, *p; | |
6779 | hashval_t hash; | |
6780 | struct tocsave_entry **slot; | |
6781 | ||
6782 | r_indx = ELF64_R_SYM (irela->r_info); | |
6783 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6784 | return NULL; | |
6785 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6786 | { | |
6787 | (*_bfd_error_handler) | |
6788 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
6789 | return NULL; | |
6790 | } | |
6791 | ||
6792 | if (h != NULL) | |
6793 | ent.offset = h->root.u.def.value; | |
6794 | else | |
6795 | ent.offset = sym->st_value; | |
6796 | ent.offset += irela->r_addend; | |
6797 | ||
6798 | hash = tocsave_htab_hash (&ent); | |
6799 | slot = ((struct tocsave_entry **) | |
6800 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6801 | if (slot == NULL) | |
6802 | return NULL; | |
6803 | ||
6804 | if (*slot == NULL) | |
6805 | { | |
6806 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6807 | if (p == NULL) | |
6808 | return NULL; | |
6809 | *p = ent; | |
6810 | *slot = p; | |
6811 | } | |
6812 | return *slot; | |
6813 | } | |
6814 | ||
754021d0 | 6815 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6816 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6817 | |
6818 | static bfd_boolean | |
6819 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6820 | { | |
6821 | struct ppc_link_hash_entry *eh; | |
6822 | asection *sym_sec; | |
74f0fb50 | 6823 | struct _opd_sec_data *opd; |
754021d0 AM |
6824 | |
6825 | if (h->root.type == bfd_link_hash_indirect) | |
6826 | return TRUE; | |
6827 | ||
754021d0 AM |
6828 | if (h->root.type != bfd_link_hash_defined |
6829 | && h->root.type != bfd_link_hash_defweak) | |
6830 | return TRUE; | |
6831 | ||
6832 | eh = (struct ppc_link_hash_entry *) h; | |
6833 | if (eh->adjust_done) | |
6834 | return TRUE; | |
6835 | ||
6836 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6837 | opd = get_opd_info (sym_sec); |
6838 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6839 | { |
74f0fb50 | 6840 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6841 | if (adjust == -1) |
6842 | { | |
6843 | /* This entry has been deleted. */ | |
b3fac117 | 6844 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6845 | if (dsec == NULL) |
6846 | { | |
6847 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6848 | if (elf_discarded_section (dsec)) | |
6849 | { | |
b3fac117 | 6850 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6851 | break; |
6852 | } | |
6853 | } | |
4025353c | 6854 | eh->elf.root.u.def.value = 0; |
81688140 | 6855 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6856 | } |
6857 | else | |
6858 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6859 | eh->adjust_done = 1; |
6860 | } | |
6861 | return TRUE; | |
6862 | } | |
6863 | ||
8c1d1bb8 AM |
6864 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6865 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6866 | have already been determined. */ | |
6867 | ||
6868 | static bfd_boolean | |
6869 | dec_dynrel_count (bfd_vma r_info, | |
6870 | asection *sec, | |
6871 | struct bfd_link_info *info, | |
6872 | Elf_Internal_Sym **local_syms, | |
6873 | struct elf_link_hash_entry *h, | |
6874 | asection *sym_sec) | |
6875 | { | |
6876 | enum elf_ppc64_reloc_type r_type; | |
6061a67d AM |
6877 | struct elf_dyn_relocs *p; |
6878 | struct elf_dyn_relocs **pp; | |
8c1d1bb8 AM |
6879 | |
6880 | /* Can this reloc be dynamic? This switch, and later tests here | |
6881 | should be kept in sync with the code in check_relocs. */ | |
6882 | r_type = ELF64_R_TYPE (r_info); | |
6883 | switch (r_type) | |
6884 | { | |
6885 | default: | |
6886 | return TRUE; | |
6887 | ||
6888 | case R_PPC64_TPREL16: | |
6889 | case R_PPC64_TPREL16_LO: | |
6890 | case R_PPC64_TPREL16_HI: | |
6891 | case R_PPC64_TPREL16_HA: | |
6892 | case R_PPC64_TPREL16_DS: | |
6893 | case R_PPC64_TPREL16_LO_DS: | |
6894 | case R_PPC64_TPREL16_HIGHER: | |
6895 | case R_PPC64_TPREL16_HIGHERA: | |
6896 | case R_PPC64_TPREL16_HIGHEST: | |
6897 | case R_PPC64_TPREL16_HIGHESTA: | |
6898 | if (!info->shared) | |
6899 | return TRUE; | |
6900 | ||
6901 | case R_PPC64_TPREL64: | |
6902 | case R_PPC64_DTPMOD64: | |
6903 | case R_PPC64_DTPREL64: | |
6904 | case R_PPC64_ADDR64: | |
6905 | case R_PPC64_REL30: | |
6906 | case R_PPC64_REL32: | |
6907 | case R_PPC64_REL64: | |
6908 | case R_PPC64_ADDR14: | |
6909 | case R_PPC64_ADDR14_BRNTAKEN: | |
6910 | case R_PPC64_ADDR14_BRTAKEN: | |
6911 | case R_PPC64_ADDR16: | |
6912 | case R_PPC64_ADDR16_DS: | |
6913 | case R_PPC64_ADDR16_HA: | |
6914 | case R_PPC64_ADDR16_HI: | |
6915 | case R_PPC64_ADDR16_HIGHER: | |
6916 | case R_PPC64_ADDR16_HIGHERA: | |
6917 | case R_PPC64_ADDR16_HIGHEST: | |
6918 | case R_PPC64_ADDR16_HIGHESTA: | |
6919 | case R_PPC64_ADDR16_LO: | |
6920 | case R_PPC64_ADDR16_LO_DS: | |
6921 | case R_PPC64_ADDR24: | |
6922 | case R_PPC64_ADDR32: | |
6923 | case R_PPC64_UADDR16: | |
6924 | case R_PPC64_UADDR32: | |
6925 | case R_PPC64_UADDR64: | |
6926 | case R_PPC64_TOC: | |
6927 | break; | |
6928 | } | |
6929 | ||
6930 | if (local_syms != NULL) | |
6931 | { | |
6932 | unsigned long r_symndx; | |
6933 | Elf_Internal_Sym *sym; | |
6934 | bfd *ibfd = sec->owner; | |
6935 | ||
6936 | r_symndx = ELF64_R_SYM (r_info); | |
6937 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6938 | return FALSE; | |
6939 | } | |
6940 | ||
6941 | if ((info->shared | |
1d483afe | 6942 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 AM |
6943 | || (h != NULL |
6944 | && (!info->symbolic | |
6945 | || h->root.type == bfd_link_hash_defweak | |
6946 | || !h->def_regular)))) | |
6947 | || (ELIMINATE_COPY_RELOCS | |
6948 | && !info->shared | |
6949 | && h != NULL | |
6950 | && (h->root.type == bfd_link_hash_defweak | |
6951 | || !h->def_regular))) | |
6952 | ; | |
6953 | else | |
6954 | return TRUE; | |
6955 | ||
6956 | if (h != NULL) | |
6957 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6958 | else |
6edfbbad | 6959 | { |
60124e18 AM |
6960 | if (sym_sec != NULL) |
6961 | { | |
6962 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6061a67d | 6963 | pp = (struct elf_dyn_relocs **) vpp; |
60124e18 AM |
6964 | } |
6965 | else | |
6966 | { | |
6967 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6061a67d | 6968 | pp = (struct elf_dyn_relocs **) vpp; |
60124e18 AM |
6969 | } |
6970 | ||
6971 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6972 | with local syms for a given section. Don't report a dynreloc | |
6973 | miscount. */ | |
6974 | if (*pp == NULL) | |
6975 | return TRUE; | |
6edfbbad | 6976 | } |
8c1d1bb8 AM |
6977 | |
6978 | while ((p = *pp) != NULL) | |
6979 | { | |
6980 | if (p->sec == sec) | |
6981 | { | |
1d483afe | 6982 | if (!must_be_dyn_reloc (info, r_type)) |
8c1d1bb8 AM |
6983 | p->pc_count -= 1; |
6984 | p->count -= 1; | |
6985 | if (p->count == 0) | |
6986 | *pp = p->next; | |
6987 | return TRUE; | |
6988 | } | |
6989 | pp = &p->next; | |
6990 | } | |
6991 | ||
8de848d8 | 6992 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
25f53a85 | 6993 | sec->owner, sec); |
8c1d1bb8 AM |
6994 | bfd_set_error (bfd_error_bad_value); |
6995 | return FALSE; | |
6996 | } | |
6997 | ||
754021d0 AM |
6998 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6999 | only remove those associated with functions in discarded link-once | |
7000 | sections, or weakly defined functions that have been overridden. It | |
7001 | would be possible to remove many more entries for statically linked | |
7002 | applications. */ | |
7003 | ||
b34976b6 | 7004 | bfd_boolean |
33c0ec9d | 7005 | ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping) |
1e2f5b6e AM |
7006 | { |
7007 | bfd *ibfd; | |
754021d0 | 7008 | bfd_boolean some_edited = FALSE; |
3f764659 | 7009 | asection *need_pad = NULL; |
1e2f5b6e | 7010 | |
411e1bfb | 7011 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
7012 | { |
7013 | asection *sec; | |
7014 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7015 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7016 | Elf_Internal_Sym *local_syms; |
1e2f5b6e | 7017 | bfd_vma offset; |
74f0fb50 | 7018 | struct _opd_sec_data *opd; |
3f764659 JJ |
7019 | bfd_boolean need_edit, add_aux_fields; |
7020 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e | 7021 | |
854b41e7 AM |
7022 | if (!is_ppc64_elf (ibfd)) |
7023 | continue; | |
7024 | ||
1e2f5b6e | 7025 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7026 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7027 | continue; |
7028 | ||
4b85d634 AM |
7029 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
7030 | continue; | |
7031 | ||
1e2f5b6e AM |
7032 | if (sec->output_section == bfd_abs_section_ptr) |
7033 | continue; | |
7034 | ||
7035 | /* Look through the section relocs. */ | |
7036 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7037 | continue; | |
7038 | ||
6cdc0ccc | 7039 | local_syms = NULL; |
0ffa91dd | 7040 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7041 | |
7042 | /* Read the relocations. */ | |
4ce794b7 | 7043 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7044 | info->keep_memory); |
1e2f5b6e | 7045 | if (relstart == NULL) |
b34976b6 | 7046 | return FALSE; |
1e2f5b6e AM |
7047 | |
7048 | /* First run through the relocs to check they are sane, and to | |
7049 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7050 | need_edit = FALSE; |
3f764659 | 7051 | need_pad = sec; |
1e2f5b6e AM |
7052 | offset = 0; |
7053 | relend = relstart + sec->reloc_count; | |
50bc7936 | 7054 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7055 | { |
04c9666a | 7056 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7057 | unsigned long r_symndx; |
7058 | asection *sym_sec; | |
7059 | struct elf_link_hash_entry *h; | |
7060 | Elf_Internal_Sym *sym; | |
7061 | ||
3f764659 | 7062 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7063 | only interested in the reloc pointing to a function entry |
7064 | point. */ | |
50bc7936 AM |
7065 | if (rel->r_offset != offset |
7066 | || rel + 1 >= relend | |
7067 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
7068 | { |
7069 | /* If someone messes with .opd alignment then after a | |
7070 | "ld -r" we might have padding in the middle of .opd. | |
7071 | Also, there's nothing to prevent someone putting | |
7072 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7073 | optimization for them! */ |
3f764659 | 7074 | broken_opd: |
1e2f5b6e | 7075 | (*_bfd_error_handler) |
d003868e | 7076 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 7077 | need_edit = FALSE; |
1e2f5b6e AM |
7078 | break; |
7079 | } | |
7080 | ||
50bc7936 AM |
7081 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7082 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7083 | { | |
7084 | (*_bfd_error_handler) | |
d003868e AM |
7085 | (_("%B: unexpected reloc type %u in .opd section"), |
7086 | ibfd, r_type); | |
50bc7936 AM |
7087 | need_edit = FALSE; |
7088 | break; | |
7089 | } | |
7090 | ||
1e2f5b6e | 7091 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7092 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7093 | r_symndx, ibfd)) | |
50bc7936 | 7094 | goto error_ret; |
1e2f5b6e AM |
7095 | |
7096 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7097 | { | |
411e1bfb AM |
7098 | const char *sym_name; |
7099 | if (h != NULL) | |
7100 | sym_name = h->root.root.string; | |
7101 | else | |
26c61ae5 L |
7102 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7103 | sym_sec); | |
411e1bfb | 7104 | |
1e2f5b6e | 7105 | (*_bfd_error_handler) |
d003868e AM |
7106 | (_("%B: undefined sym `%s' in .opd section"), |
7107 | ibfd, sym_name); | |
b34976b6 | 7108 | need_edit = FALSE; |
1e2f5b6e AM |
7109 | break; |
7110 | } | |
7111 | ||
51020317 AM |
7112 | /* opd entries are always for functions defined in the |
7113 | current input bfd. If the symbol isn't defined in the | |
7114 | input bfd, then we won't be using the function in this | |
7115 | bfd; It must be defined in a linkonce section in another | |
7116 | bfd, or is weak. It's also possible that we are | |
7117 | discarding the function due to a linker script /DISCARD/, | |
7118 | which we test for via the output_section. */ | |
7119 | if (sym_sec->owner != ibfd | |
7120 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7121 | need_edit = TRUE; |
1e2f5b6e | 7122 | |
50bc7936 | 7123 | rel += 2; |
3f764659 JJ |
7124 | if (rel == relend |
7125 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
7126 | { | |
7127 | if (sec->size == offset + 24) | |
7128 | { | |
7129 | need_pad = NULL; | |
7130 | break; | |
7131 | } | |
7132 | if (rel == relend && sec->size == offset + 16) | |
7133 | { | |
7134 | cnt_16b++; | |
7135 | break; | |
7136 | } | |
7137 | goto broken_opd; | |
7138 | } | |
7139 | ||
7140 | if (rel->r_offset == offset + 24) | |
7141 | offset += 24; | |
7142 | else if (rel->r_offset != offset + 16) | |
7143 | goto broken_opd; | |
7144 | else if (rel + 1 < relend | |
7145 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7146 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7147 | { | |
7148 | offset += 16; | |
7149 | cnt_16b++; | |
7150 | } | |
7151 | else if (rel + 2 < relend | |
7152 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
7153 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
7154 | { | |
7155 | offset += 24; | |
7156 | rel += 1; | |
7157 | } | |
7158 | else | |
7159 | goto broken_opd; | |
1e2f5b6e AM |
7160 | } |
7161 | ||
3f764659 JJ |
7162 | add_aux_fields = non_overlapping && cnt_16b > 0; |
7163 | ||
7164 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
7165 | { |
7166 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7167 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7168 | bfd_byte *rptr, *wptr; |
983bddc8 | 7169 | bfd_byte *new_contents; |
b34976b6 | 7170 | bfd_boolean skip; |
3f764659 | 7171 | long opd_ent_size; |
74f0fb50 AM |
7172 | bfd_size_type amt; |
7173 | ||
983bddc8 | 7174 | new_contents = NULL; |
74f0fb50 AM |
7175 | amt = sec->size * sizeof (long) / 8; |
7176 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
33c0ec9d | 7177 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7178 | if (opd->adjust == NULL) |
7179 | return FALSE; | |
7180 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e AM |
7181 | |
7182 | /* This seems a waste of time as input .opd sections are all | |
7183 | zeros as generated by gcc, but I suppose there's no reason | |
7184 | this will always be so. We might start putting something in | |
7185 | the third word of .opd entries. */ | |
7186 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7187 | { | |
eea6121a AM |
7188 | bfd_byte *loc; |
7189 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7190 | { |
eea6121a AM |
7191 | if (loc != NULL) |
7192 | free (loc); | |
50bc7936 | 7193 | error_ret: |
6cdc0ccc AM |
7194 | if (local_syms != NULL |
7195 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7196 | free (local_syms); | |
6cdc0ccc AM |
7197 | if (elf_section_data (sec)->relocs != relstart) |
7198 | free (relstart); | |
b34976b6 | 7199 | return FALSE; |
6cdc0ccc | 7200 | } |
1e2f5b6e AM |
7201 | sec->contents = loc; |
7202 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7203 | } | |
7204 | ||
7205 | elf_section_data (sec)->relocs = relstart; | |
7206 | ||
3f764659 | 7207 | new_contents = sec->contents; |
3f764659 JJ |
7208 | if (add_aux_fields) |
7209 | { | |
7210 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7211 | if (new_contents == NULL) | |
7212 | return FALSE; | |
7213 | need_pad = FALSE; | |
3f764659 | 7214 | } |
b4f4e59f AM |
7215 | wptr = new_contents; |
7216 | rptr = sec->contents; | |
3f764659 | 7217 | |
1e2f5b6e | 7218 | write_rel = relstart; |
b34976b6 | 7219 | skip = FALSE; |
1e2f5b6e | 7220 | offset = 0; |
3f764659 | 7221 | opd_ent_size = 0; |
1e2f5b6e AM |
7222 | for (rel = relstart; rel < relend; rel++) |
7223 | { | |
50bc7936 AM |
7224 | unsigned long r_symndx; |
7225 | asection *sym_sec; | |
7226 | struct elf_link_hash_entry *h; | |
7227 | Elf_Internal_Sym *sym; | |
7228 | ||
7229 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7230 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7231 | r_symndx, ibfd)) |
50bc7936 AM |
7232 | goto error_ret; |
7233 | ||
1e2f5b6e AM |
7234 | if (rel->r_offset == offset) |
7235 | { | |
50bc7936 | 7236 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
7237 | |
7238 | /* See if the .opd entry is full 24 byte or | |
7239 | 16 byte (with fd_aux entry overlapped with next | |
7240 | fd_func). */ | |
7241 | opd_ent_size = 24; | |
7242 | if ((rel + 2 == relend && sec->size == offset + 16) | |
7243 | || (rel + 3 < relend | |
7244 | && rel[2].r_offset == offset + 16 | |
7245 | && rel[3].r_offset == offset + 24 | |
7246 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
7247 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
7248 | opd_ent_size = 16; | |
7249 | ||
4025353c AM |
7250 | if (h != NULL |
7251 | && h->root.root.string[0] == '.') | |
c4f68ce3 | 7252 | { |
4dfe6ac6 NC |
7253 | struct ppc_link_hash_table *htab; |
7254 | ||
7255 | htab = ppc_hash_table (info); | |
7256 | if (htab != NULL) | |
7257 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, | |
7258 | htab); | |
c4f68ce3 AM |
7259 | if (fdh != NULL |
7260 | && fdh->elf.root.type != bfd_link_hash_defined | |
7261 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7262 | fdh = NULL; | |
7263 | } | |
1e2f5b6e | 7264 | |
51020317 AM |
7265 | skip = (sym_sec->owner != ibfd |
7266 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
7267 | if (skip) |
7268 | { | |
4025353c | 7269 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
7270 | { |
7271 | /* Arrange for the function descriptor sym | |
7272 | to be dropped. */ | |
d6fe2dc1 AM |
7273 | fdh->elf.root.u.def.value = 0; |
7274 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7275 | } |
74f0fb50 | 7276 | opd->adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
7277 | } |
7278 | else | |
1e2f5b6e AM |
7279 | { |
7280 | /* We'll be keeping this opd entry. */ | |
7281 | ||
4025353c | 7282 | if (fdh != NULL) |
1e2f5b6e | 7283 | { |
754021d0 AM |
7284 | /* Redefine the function descriptor symbol to |
7285 | this location in the opd section. It is | |
7286 | necessary to update the value here rather | |
7287 | than using an array of adjustments as we do | |
7288 | for local symbols, because various places | |
7289 | in the generic ELF code use the value | |
7290 | stored in u.def.value. */ | |
3f764659 | 7291 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 7292 | fdh->adjust_done = 1; |
1e2f5b6e | 7293 | } |
754021d0 AM |
7294 | |
7295 | /* Local syms are a bit tricky. We could | |
7296 | tweak them as they can be cached, but | |
7297 | we'd need to look through the local syms | |
7298 | for the function descriptor sym which we | |
7299 | don't have at the moment. So keep an | |
7300 | array of adjustments. */ | |
74f0fb50 | 7301 | opd->adjust[rel->r_offset / 8] |
3f764659 | 7302 | = (wptr - new_contents) - (rptr - sec->contents); |
1e2f5b6e AM |
7303 | |
7304 | if (wptr != rptr) | |
3f764659 JJ |
7305 | memcpy (wptr, rptr, opd_ent_size); |
7306 | wptr += opd_ent_size; | |
7307 | if (add_aux_fields && opd_ent_size == 16) | |
7308 | { | |
7309 | memset (wptr, '\0', 8); | |
7310 | wptr += 8; | |
7311 | } | |
1e2f5b6e | 7312 | } |
3f764659 JJ |
7313 | rptr += opd_ent_size; |
7314 | offset += opd_ent_size; | |
1e2f5b6e AM |
7315 | } |
7316 | ||
50bc7936 AM |
7317 | if (skip) |
7318 | { | |
60124e18 AM |
7319 | if (!NO_OPD_RELOCS |
7320 | && !info->relocatable | |
18d944df AM |
7321 | && !dec_dynrel_count (rel->r_info, sec, info, |
7322 | NULL, h, sym_sec)) | |
8c1d1bb8 | 7323 | goto error_ret; |
50bc7936 AM |
7324 | } |
7325 | else | |
1e2f5b6e | 7326 | { |
50bc7936 AM |
7327 | /* We need to adjust any reloc offsets to point to the |
7328 | new opd entries. While we're at it, we may as well | |
7329 | remove redundant relocs. */ | |
74f0fb50 | 7330 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
7331 | if (write_rel != rel) |
7332 | memcpy (write_rel, rel, sizeof (*rel)); | |
7333 | ++write_rel; | |
7334 | } | |
7335 | } | |
7336 | ||
3f764659 | 7337 | sec->size = wptr - new_contents; |
1e2f5b6e | 7338 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7339 | if (add_aux_fields) |
7340 | { | |
7341 | free (sec->contents); | |
7342 | sec->contents = new_contents; | |
7343 | } | |
7344 | ||
05bf9422 | 7345 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7346 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7347 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7348 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7349 | some_edited = TRUE; |
1e2f5b6e | 7350 | } |
6cdc0ccc | 7351 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7352 | free (relstart); |
6cdc0ccc | 7353 | |
411e1bfb AM |
7354 | if (local_syms != NULL |
7355 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7356 | { | |
7357 | if (!info->keep_memory) | |
7358 | free (local_syms); | |
7359 | else | |
7360 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7361 | } | |
7362 | } | |
7363 | ||
754021d0 AM |
7364 | if (some_edited) |
7365 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7366 | ||
3f764659 JJ |
7367 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7368 | long, add a 8 byte padding after it. */ | |
7369 | if (need_pad != NULL && !info->relocatable) | |
7370 | { | |
7371 | bfd_byte *p; | |
7372 | ||
7373 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7374 | { | |
7375 | BFD_ASSERT (need_pad->size > 0); | |
7376 | ||
7377 | p = bfd_malloc (need_pad->size + 8); | |
7378 | if (p == NULL) | |
7379 | return FALSE; | |
699733f6 | 7380 | |
3f764659 JJ |
7381 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
7382 | p, 0, need_pad->size)) | |
7383 | return FALSE; | |
7384 | ||
7385 | need_pad->contents = p; | |
7386 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7387 | } | |
7388 | else | |
7389 | { | |
7390 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7391 | if (p == NULL) | |
7392 | return FALSE; | |
7393 | ||
7394 | need_pad->contents = p; | |
7395 | } | |
7396 | ||
7397 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7398 | need_pad->size += 8; | |
7399 | } | |
7400 | ||
411e1bfb AM |
7401 | return TRUE; |
7402 | } | |
7403 | ||
e1918d23 | 7404 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7405 | |
e1918d23 | 7406 | asection * |
33c0ec9d AM |
7407 | ppc64_elf_tls_setup (struct bfd_link_info *info, |
7408 | int no_tls_get_addr_opt, | |
7409 | int *no_multi_toc) | |
411e1bfb | 7410 | { |
411e1bfb AM |
7411 | struct ppc_link_hash_table *htab; |
7412 | ||
411e1bfb | 7413 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7414 | if (htab == NULL) |
7415 | return NULL; | |
7416 | ||
33c0ec9d AM |
7417 | if (*no_multi_toc) |
7418 | htab->do_multi_toc = 0; | |
7419 | else if (!htab->do_multi_toc) | |
7420 | *no_multi_toc = 1; | |
7421 | ||
3a71aa26 AM |
7422 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
7423 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
7424 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7425 | /* Move dynamic linking info to the function descriptor sym. */ |
7426 | if (htab->tls_get_addr != NULL) | |
7427 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
7428 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
7429 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7430 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
7431 | if (!no_tls_get_addr_opt) |
7432 | { | |
7433 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
7434 | ||
7435 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7436 | FALSE, FALSE, TRUE); | |
7437 | if (opt != NULL) | |
7438 | func_desc_adjust (opt, info); | |
7439 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7440 | FALSE, FALSE, TRUE); | |
7441 | if (opt_fd != NULL | |
7442 | && (opt_fd->root.type == bfd_link_hash_defined | |
7443 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7444 | { | |
7445 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7446 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7447 | be calling __tls_get_addr via a plt call stub, then | |
7448 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
7449 | tga_fd = &htab->tls_get_addr_fd->elf; | |
7450 | if (htab->elf.dynamic_sections_created | |
7451 | && tga_fd != NULL | |
7452 | && (tga_fd->type == STT_FUNC | |
7453 | || tga_fd->needs_plt) | |
7454 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7455 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
7456 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
7457 | { | |
7458 | struct plt_entry *ent; | |
7459 | ||
7460 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7461 | if (ent->plt.refcount > 0) | |
7462 | break; | |
7463 | if (ent != NULL) | |
7464 | { | |
7465 | tga_fd->root.type = bfd_link_hash_indirect; | |
7466 | tga_fd->root.u.i.link = &opt_fd->root; | |
7467 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7468 | if (opt_fd->dynindx != -1) | |
7469 | { | |
7470 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7471 | opt_fd->dynindx = -1; | |
7472 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7473 | opt_fd->dynstr_index); | |
7474 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7475 | return NULL; |
a7f2871e AM |
7476 | } |
7477 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
7478 | tga = &htab->tls_get_addr->elf; | |
7479 | if (opt != NULL && tga != NULL) | |
7480 | { | |
7481 | tga->root.type = bfd_link_hash_indirect; | |
7482 | tga->root.u.i.link = &opt->root; | |
7483 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7484 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7485 | tga->forced_local); | |
7486 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
7487 | } | |
7488 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7489 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7490 | if (htab->tls_get_addr != NULL) | |
7491 | { | |
7492 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7493 | htab->tls_get_addr->is_func = 1; | |
7494 | } | |
7495 | } | |
7496 | } | |
7497 | } | |
7498 | else | |
7499 | no_tls_get_addr_opt = TRUE; | |
7500 | } | |
7501 | htab->no_tls_get_addr_opt = no_tls_get_addr_opt; | |
33c0ec9d | 7502 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7503 | } |
8387904d | 7504 | |
3a71aa26 AM |
7505 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
7506 | HASH1 or HASH2. */ | |
8387904d | 7507 | |
3a71aa26 AM |
7508 | static bfd_boolean |
7509 | branch_reloc_hash_match (const bfd *ibfd, | |
7510 | const Elf_Internal_Rela *rel, | |
7511 | const struct ppc_link_hash_entry *hash1, | |
7512 | const struct ppc_link_hash_entry *hash2) | |
7513 | { | |
7514 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7515 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7516 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7517 | ||
e054468f | 7518 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7519 | { |
3a71aa26 AM |
7520 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7521 | struct elf_link_hash_entry *h; | |
8387904d | 7522 | |
3a71aa26 | 7523 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7524 | h = elf_follow_link (h); |
3a71aa26 AM |
7525 | if (h == &hash1->elf || h == &hash2->elf) |
7526 | return TRUE; | |
a48ebf4d | 7527 | } |
3a71aa26 | 7528 | return FALSE; |
951fd09b | 7529 | } |
411e1bfb | 7530 | |
951fd09b AM |
7531 | /* Run through all the TLS relocs looking for optimization |
7532 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7533 | a preliminary section layout so that we know the TLS segment | |
7534 | offsets. We can't optimize earlier because some optimizations need | |
7535 | to know the tp offset, and we need to optimize before allocating | |
7536 | dynamic relocations. */ | |
7537 | ||
7538 | bfd_boolean | |
33c0ec9d | 7539 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7540 | { |
7541 | bfd *ibfd; | |
7542 | asection *sec; | |
7543 | struct ppc_link_hash_table *htab; | |
663a1470 | 7544 | unsigned char *toc_ref; |
102890f0 | 7545 | int pass; |
951fd09b | 7546 | |
1d483afe | 7547 | if (info->relocatable || !info->executable) |
411e1bfb AM |
7548 | return TRUE; |
7549 | ||
951fd09b | 7550 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7551 | if (htab == NULL) |
7552 | return FALSE; | |
7553 | ||
663a1470 AM |
7554 | /* Make two passes over the relocs. On the first pass, mark toc |
7555 | entries involved with tls relocs, and check that tls relocs | |
7556 | involved in setting up a tls_get_addr call are indeed followed by | |
7557 | such a call. If they are not, we can't do any tls optimization. | |
7558 | On the second pass twiddle tls_mask flags to notify | |
7559 | relocate_section that optimization can be done, and adjust got | |
7560 | and plt refcounts. */ | |
7561 | toc_ref = NULL; | |
7562 | for (pass = 0; pass < 2; ++pass) | |
7563 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7564 | { | |
7565 | Elf_Internal_Sym *locsyms = NULL; | |
7566 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7567 | ||
102890f0 AM |
7568 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7569 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7570 | { | |
7571 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7572 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7573 | |
102890f0 AM |
7574 | /* Read the relocations. */ |
7575 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7576 | info->keep_memory); | |
7577 | if (relstart == NULL) | |
7578 | return FALSE; | |
411e1bfb | 7579 | |
102890f0 AM |
7580 | relend = relstart + sec->reloc_count; |
7581 | for (rel = relstart; rel < relend; rel++) | |
7582 | { | |
7583 | enum elf_ppc64_reloc_type r_type; | |
7584 | unsigned long r_symndx; | |
7585 | struct elf_link_hash_entry *h; | |
7586 | Elf_Internal_Sym *sym; | |
7587 | asection *sym_sec; | |
f961d9dd AM |
7588 | unsigned char *tls_mask; |
7589 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
7590 | bfd_vma value; |
7591 | bfd_boolean ok_tprel, is_local; | |
7592 | long toc_ref_index = 0; | |
7593 | int expecting_tls_get_addr = 0; | |
663a1470 | 7594 | bfd_boolean ret = FALSE; |
411e1bfb | 7595 | |
102890f0 AM |
7596 | r_symndx = ELF64_R_SYM (rel->r_info); |
7597 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7598 | r_symndx, ibfd)) | |
7599 | { | |
7600 | err_free_rel: | |
7601 | if (elf_section_data (sec)->relocs != relstart) | |
7602 | free (relstart); | |
7603 | if (toc_ref != NULL) | |
7604 | free (toc_ref); | |
7605 | if (locsyms != NULL | |
0ffa91dd | 7606 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
7607 | != (unsigned char *) locsyms)) |
7608 | free (locsyms); | |
663a1470 | 7609 | return ret; |
102890f0 | 7610 | } |
411e1bfb | 7611 | |
102890f0 AM |
7612 | if (h != NULL) |
7613 | { | |
766bc656 AM |
7614 | if (h->root.type == bfd_link_hash_defined |
7615 | || h->root.type == bfd_link_hash_defweak) | |
7616 | value = h->root.u.def.value; | |
7617 | else if (h->root.type == bfd_link_hash_undefweak) | |
7618 | value = 0; | |
7619 | else | |
663a1470 AM |
7620 | { |
7621 | found_tls_get_addr_arg = 0; | |
7622 | continue; | |
7623 | } | |
102890f0 AM |
7624 | } |
7625 | else | |
7626 | /* Symbols referenced by TLS relocs must be of type | |
7627 | STT_TLS. So no need for .opd local sym adjust. */ | |
7628 | value = sym->st_value; | |
7629 | ||
7630 | ok_tprel = FALSE; | |
7631 | is_local = FALSE; | |
7632 | if (h == NULL | |
7633 | || !h->def_dynamic) | |
7634 | { | |
7635 | is_local = TRUE; | |
766bc656 AM |
7636 | if (h != NULL |
7637 | && h->root.type == bfd_link_hash_undefweak) | |
7638 | ok_tprel = TRUE; | |
7639 | else | |
7640 | { | |
7641 | value += sym_sec->output_offset; | |
7642 | value += sym_sec->output_section->vma; | |
7643 | value -= htab->elf.tls_sec->vma; | |
7644 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
7645 | < (bfd_vma) 1 << 32); | |
7646 | } | |
102890f0 | 7647 | } |
951fd09b | 7648 | |
102890f0 | 7649 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
7650 | /* If this section has old-style __tls_get_addr calls |
7651 | without marker relocs, then check that each | |
7652 | __tls_get_addr call reloc is preceded by a reloc | |
7653 | that conceivably belongs to the __tls_get_addr arg | |
7654 | setup insn. If we don't find matching arg setup | |
7655 | relocs, don't do any tls optimization. */ | |
7656 | if (pass == 0 | |
7657 | && sec->has_tls_get_addr_call | |
7658 | && h != NULL | |
7659 | && (h == &htab->tls_get_addr->elf | |
7660 | || h == &htab->tls_get_addr_fd->elf) | |
7661 | && !found_tls_get_addr_arg | |
7662 | && is_branch_reloc (r_type)) | |
7663 | { | |
25f53a85 | 7664 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
7665 | "TLS optimization disabled\n"), |
7666 | ibfd, sec, rel->r_offset); | |
7667 | ret = TRUE; | |
7668 | goto err_free_rel; | |
7669 | } | |
7670 | ||
7671 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
7672 | switch (r_type) |
7673 | { | |
7674 | case R_PPC64_GOT_TLSLD16: | |
7675 | case R_PPC64_GOT_TLSLD16_LO: | |
7676 | expecting_tls_get_addr = 1; | |
663a1470 | 7677 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7678 | /* Fall thru */ |
7679 | ||
7680 | case R_PPC64_GOT_TLSLD16_HI: | |
7681 | case R_PPC64_GOT_TLSLD16_HA: | |
7682 | /* These relocs should never be against a symbol | |
7683 | defined in a shared lib. Leave them alone if | |
7684 | that turns out to be the case. */ | |
7685 | if (!is_local) | |
7686 | continue; | |
411e1bfb | 7687 | |
102890f0 | 7688 | /* LD -> LE */ |
411e1bfb | 7689 | tls_set = 0; |
102890f0 AM |
7690 | tls_clear = TLS_LD; |
7691 | tls_type = TLS_TLS | TLS_LD; | |
7692 | break; | |
411e1bfb | 7693 | |
102890f0 AM |
7694 | case R_PPC64_GOT_TLSGD16: |
7695 | case R_PPC64_GOT_TLSGD16_LO: | |
7696 | expecting_tls_get_addr = 1; | |
663a1470 | 7697 | found_tls_get_addr_arg = 1; |
102890f0 AM |
7698 | /* Fall thru */ |
7699 | ||
7700 | case R_PPC64_GOT_TLSGD16_HI: | |
7701 | case R_PPC64_GOT_TLSGD16_HA: | |
7702 | if (ok_tprel) | |
7703 | /* GD -> LE */ | |
411e1bfb | 7704 | tls_set = 0; |
102890f0 AM |
7705 | else |
7706 | /* GD -> IE */ | |
7707 | tls_set = TLS_TLS | TLS_TPRELGD; | |
7708 | tls_clear = TLS_GD; | |
7709 | tls_type = TLS_TLS | TLS_GD; | |
7710 | break; | |
7711 | ||
7712 | case R_PPC64_GOT_TPREL16_DS: | |
7713 | case R_PPC64_GOT_TPREL16_LO_DS: | |
7714 | case R_PPC64_GOT_TPREL16_HI: | |
7715 | case R_PPC64_GOT_TPREL16_HA: | |
7716 | if (ok_tprel) | |
7717 | { | |
7718 | /* IE -> LE */ | |
7719 | tls_set = 0; | |
7720 | tls_clear = TLS_TPREL; | |
7721 | tls_type = TLS_TLS | TLS_TPREL; | |
7722 | break; | |
7723 | } | |
411e1bfb AM |
7724 | continue; |
7725 | ||
727fc41e AM |
7726 | case R_PPC64_TLSGD: |
7727 | case R_PPC64_TLSLD: | |
663a1470 AM |
7728 | found_tls_get_addr_arg = 1; |
7729 | /* Fall thru */ | |
7730 | ||
7731 | case R_PPC64_TLS: | |
7732 | case R_PPC64_TOC16: | |
7733 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
7734 | if (sym_sec == NULL || sym_sec != toc) |
7735 | continue; | |
7736 | ||
7737 | /* Mark this toc entry as referenced by a TLS | |
7738 | code sequence. We can do that now in the | |
7739 | case of R_PPC64_TLS, and after checking for | |
7740 | tls_get_addr for the TOC16 relocs. */ | |
7741 | if (toc_ref == NULL) | |
663a1470 AM |
7742 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
7743 | if (toc_ref == NULL) | |
7744 | goto err_free_rel; | |
7745 | ||
102890f0 AM |
7746 | if (h != NULL) |
7747 | value = h->root.u.def.value; | |
7748 | else | |
7749 | value = sym->st_value; | |
7750 | value += rel->r_addend; | |
7751 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
663a1470 | 7752 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
7753 | if (r_type == R_PPC64_TLS |
7754 | || r_type == R_PPC64_TLSGD | |
7755 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
7756 | { |
7757 | toc_ref[toc_ref_index] = 1; | |
7758 | continue; | |
7759 | } | |
7760 | ||
7761 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
7762 | continue; | |
7763 | ||
7764 | tls_set = 0; | |
7765 | tls_clear = 0; | |
7766 | expecting_tls_get_addr = 2; | |
7767 | break; | |
7768 | ||
7769 | case R_PPC64_TPREL64: | |
7770 | if (pass == 0 | |
7771 | || sec != toc | |
7772 | || toc_ref == NULL | |
663a1470 | 7773 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7774 | continue; |
7775 | if (ok_tprel) | |
7776 | { | |
7777 | /* IE -> LE */ | |
7778 | tls_set = TLS_EXPLICIT; | |
7779 | tls_clear = TLS_TPREL; | |
7780 | break; | |
7781 | } | |
7782 | continue; | |
7783 | ||
7784 | case R_PPC64_DTPMOD64: | |
7785 | if (pass == 0 | |
7786 | || sec != toc | |
7787 | || toc_ref == NULL | |
663a1470 | 7788 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
7789 | continue; |
7790 | if (rel + 1 < relend | |
7791 | && (rel[1].r_info | |
7792 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7793 | && rel[1].r_offset == rel->r_offset + 8) | |
7794 | { | |
7795 | if (ok_tprel) | |
7796 | /* GD -> LE */ | |
7797 | tls_set = TLS_EXPLICIT | TLS_GD; | |
7798 | else | |
7799 | /* GD -> IE */ | |
7800 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
7801 | tls_clear = TLS_GD; | |
7802 | } | |
7803 | else | |
7804 | { | |
7805 | if (!is_local) | |
7806 | continue; | |
7807 | ||
7808 | /* LD -> LE */ | |
7809 | tls_set = TLS_EXPLICIT; | |
7810 | tls_clear = TLS_LD; | |
7811 | } | |
7812 | break; | |
7813 | ||
7814 | default: | |
7815 | continue; | |
7816 | } | |
7817 | ||
7818 | if (pass == 0) | |
7819 | { | |
727fc41e AM |
7820 | if (!expecting_tls_get_addr |
7821 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
7822 | continue; |
7823 | ||
3a71aa26 AM |
7824 | if (rel + 1 < relend |
7825 | && branch_reloc_hash_match (ibfd, rel + 1, | |
7826 | htab->tls_get_addr, | |
7827 | htab->tls_get_addr_fd)) | |
102890f0 | 7828 | { |
3a71aa26 | 7829 | if (expecting_tls_get_addr == 2) |
102890f0 | 7830 | { |
3a71aa26 | 7831 | /* Check for toc tls entries. */ |
f961d9dd | 7832 | unsigned char *toc_tls; |
3a71aa26 AM |
7833 | int retval; |
7834 | ||
7835 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
7836 | &locsyms, | |
7837 | rel, ibfd); | |
7838 | if (retval == 0) | |
7839 | goto err_free_rel; | |
663a1470 AM |
7840 | if (toc_tls != NULL) |
7841 | { | |
7842 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
7843 | found_tls_get_addr_arg = 1; | |
7844 | if (retval > 1) | |
7845 | toc_ref[toc_ref_index] = 1; | |
7846 | } | |
102890f0 | 7847 | } |
3a71aa26 | 7848 | continue; |
102890f0 AM |
7849 | } |
7850 | ||
7851 | if (expecting_tls_get_addr != 1) | |
7852 | continue; | |
7853 | ||
7854 | /* Uh oh, we didn't find the expected call. We | |
7855 | could just mark this symbol to exclude it | |
7856 | from tls optimization but it's safer to skip | |
663a1470 | 7857 | the entire optimization. */ |
25f53a85 | 7858 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
7859 | "TLS optimization disabled\n"), |
7860 | ibfd, sec, rel->r_offset); | |
7861 | ret = TRUE; | |
7862 | goto err_free_rel; | |
102890f0 AM |
7863 | } |
7864 | ||
85f7a9cb | 7865 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
102890f0 AM |
7866 | { |
7867 | struct plt_entry *ent; | |
7868 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
7869 | ent != NULL; | |
7870 | ent = ent->next) | |
7871 | if (ent->addend == 0) | |
411e1bfb | 7872 | { |
102890f0 | 7873 | if (ent->plt.refcount > 0) |
30038c59 | 7874 | { |
102890f0 AM |
7875 | ent->plt.refcount -= 1; |
7876 | expecting_tls_get_addr = 0; | |
30038c59 | 7877 | } |
102890f0 | 7878 | break; |
411e1bfb | 7879 | } |
102890f0 | 7880 | } |
411e1bfb | 7881 | |
85f7a9cb | 7882 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
102890f0 AM |
7883 | { |
7884 | struct plt_entry *ent; | |
7885 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
7886 | ent != NULL; | |
7887 | ent = ent->next) | |
7888 | if (ent->addend == 0) | |
411e1bfb | 7889 | { |
102890f0 AM |
7890 | if (ent->plt.refcount > 0) |
7891 | ent->plt.refcount -= 1; | |
7892 | break; | |
411e1bfb | 7893 | } |
102890f0 | 7894 | } |
411e1bfb | 7895 | |
102890f0 | 7896 | if (tls_clear == 0) |
30038c59 AM |
7897 | continue; |
7898 | ||
102890f0 AM |
7899 | if ((tls_set & TLS_EXPLICIT) == 0) |
7900 | { | |
7901 | struct got_entry *ent; | |
411e1bfb | 7902 | |
102890f0 AM |
7903 | /* Adjust got entry for this reloc. */ |
7904 | if (h != NULL) | |
7905 | ent = h->got.glist; | |
7906 | else | |
7907 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 7908 | |
102890f0 AM |
7909 | for (; ent != NULL; ent = ent->next) |
7910 | if (ent->addend == rel->r_addend | |
7911 | && ent->owner == ibfd | |
7912 | && ent->tls_type == tls_type) | |
7913 | break; | |
7914 | if (ent == NULL) | |
7915 | abort (); | |
411e1bfb | 7916 | |
102890f0 AM |
7917 | if (tls_set == 0) |
7918 | { | |
7919 | /* We managed to get rid of a got entry. */ | |
7920 | if (ent->got.refcount > 0) | |
7921 | ent->got.refcount -= 1; | |
7922 | } | |
7923 | } | |
7924 | else | |
7925 | { | |
7926 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
7927 | we'll lose one or two dyn relocs. */ | |
7928 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7929 | NULL, h, sym_sec)) | |
7930 | return FALSE; | |
411e1bfb | 7931 | |
102890f0 AM |
7932 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
7933 | { | |
7934 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7935 | NULL, h, sym_sec)) | |
7936 | return FALSE; | |
7937 | } | |
7938 | } | |
411e1bfb | 7939 | |
102890f0 AM |
7940 | *tls_mask |= tls_set; |
7941 | *tls_mask &= ~tls_clear; | |
7942 | } | |
8c1d1bb8 | 7943 | |
102890f0 AM |
7944 | if (elf_section_data (sec)->relocs != relstart) |
7945 | free (relstart); | |
7946 | } | |
411e1bfb | 7947 | |
663a1470 AM |
7948 | if (locsyms != NULL |
7949 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
7950 | { | |
7951 | if (!info->keep_memory) | |
7952 | free (locsyms); | |
7953 | else | |
7954 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
7955 | } | |
7956 | } | |
411e1bfb | 7957 | |
663a1470 AM |
7958 | if (toc_ref != NULL) |
7959 | free (toc_ref); | |
b34976b6 | 7960 | return TRUE; |
1e2f5b6e | 7961 | } |
b34976b6 | 7962 | |
c5614fa4 AM |
7963 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7964 | the values of any global symbols in a toc section that has been | |
7965 | edited. Globals in toc sections should be a rarity, so this function | |
7966 | sets a flag if any are found in toc sections other than the one just | |
7967 | edited, so that futher hash table traversals can be avoided. */ | |
7968 | ||
7969 | struct adjust_toc_info | |
7970 | { | |
7971 | asection *toc; | |
7972 | unsigned long *skip; | |
7973 | bfd_boolean global_toc_syms; | |
7974 | }; | |
7975 | ||
ba761f19 AM |
7976 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
7977 | ||
c5614fa4 AM |
7978 | static bfd_boolean |
7979 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7980 | { | |
7981 | struct ppc_link_hash_entry *eh; | |
7982 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 7983 | unsigned long i; |
c5614fa4 | 7984 | |
c5614fa4 AM |
7985 | if (h->root.type != bfd_link_hash_defined |
7986 | && h->root.type != bfd_link_hash_defweak) | |
7987 | return TRUE; | |
7988 | ||
7989 | eh = (struct ppc_link_hash_entry *) h; | |
7990 | if (eh->adjust_done) | |
7991 | return TRUE; | |
7992 | ||
7993 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7994 | { | |
854b41e7 AM |
7995 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
7996 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 7997 | else |
854b41e7 AM |
7998 | i = eh->elf.root.u.def.value >> 3; |
7999 | ||
ba761f19 | 8000 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 AM |
8001 | { |
8002 | (*_bfd_error_handler) | |
854b41e7 AM |
8003 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8004 | do | |
8005 | ++i; | |
ba761f19 | 8006 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8007 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8008 | } |
854b41e7 AM |
8009 | |
8010 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8011 | eh->adjust_done = 1; |
8012 | } | |
8013 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8014 | toc_inf->global_toc_syms = TRUE; | |
8015 | ||
8016 | return TRUE; | |
8017 | } | |
8018 | ||
8019 | /* Examine all relocs referencing .toc sections in order to remove | |
8020 | unused .toc entries. */ | |
8021 | ||
8022 | bfd_boolean | |
33c0ec9d | 8023 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8024 | { |
8025 | bfd *ibfd; | |
8026 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8027 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8028 | |
67f0cbdb | 8029 | htab->do_toc_opt = 1; |
c5614fa4 AM |
8030 | toc_inf.global_toc_syms = TRUE; |
8031 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
8032 | { | |
8033 | asection *toc, *sec; | |
8034 | Elf_Internal_Shdr *symtab_hdr; | |
8035 | Elf_Internal_Sym *local_syms; | |
425b145b | 8036 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8037 | unsigned long *skip, *drop; |
8038 | unsigned char *used; | |
8039 | unsigned char *keep, last, some_unused; | |
8040 | ||
854b41e7 AM |
8041 | if (!is_ppc64_elf (ibfd)) |
8042 | continue; | |
8043 | ||
c5614fa4 AM |
8044 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8045 | if (toc == NULL | |
92b7a70f | 8046 | || toc->size == 0 |
c5614fa4 AM |
8047 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
8048 | || elf_discarded_section (toc)) | |
8049 | continue; | |
8050 | ||
425b145b | 8051 | toc_relocs = NULL; |
c5614fa4 | 8052 | local_syms = NULL; |
0ffa91dd | 8053 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8054 | |
8055 | /* Look at sections dropped from the final link. */ | |
8056 | skip = NULL; | |
8057 | relstart = NULL; | |
8058 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8059 | { | |
8060 | if (sec->reloc_count == 0 | |
8061 | || !elf_discarded_section (sec) | |
8062 | || get_opd_info (sec) | |
8063 | || (sec->flags & SEC_ALLOC) == 0 | |
8064 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8065 | continue; | |
8066 | ||
8067 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8068 | if (relstart == NULL) | |
8069 | goto error_ret; | |
8070 | ||
8071 | /* Run through the relocs to see which toc entries might be | |
8072 | unused. */ | |
8073 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8074 | { | |
8075 | enum elf_ppc64_reloc_type r_type; | |
8076 | unsigned long r_symndx; | |
8077 | asection *sym_sec; | |
8078 | struct elf_link_hash_entry *h; | |
8079 | Elf_Internal_Sym *sym; | |
8080 | bfd_vma val; | |
8081 | ||
8082 | r_type = ELF64_R_TYPE (rel->r_info); | |
8083 | switch (r_type) | |
8084 | { | |
8085 | default: | |
8086 | continue; | |
8087 | ||
8088 | case R_PPC64_TOC16: | |
8089 | case R_PPC64_TOC16_LO: | |
8090 | case R_PPC64_TOC16_HI: | |
8091 | case R_PPC64_TOC16_HA: | |
8092 | case R_PPC64_TOC16_DS: | |
8093 | case R_PPC64_TOC16_LO_DS: | |
8094 | break; | |
8095 | } | |
8096 | ||
8097 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8098 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8099 | r_symndx, ibfd)) | |
8100 | goto error_ret; | |
8101 | ||
8102 | if (sym_sec != toc) | |
8103 | continue; | |
8104 | ||
8105 | if (h != NULL) | |
8106 | val = h->root.u.def.value; | |
8107 | else | |
8108 | val = sym->st_value; | |
8109 | val += rel->r_addend; | |
8110 | ||
8111 | if (val >= toc->size) | |
8112 | continue; | |
8113 | ||
8114 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8115 | If not, don't mark as unused. */ | |
8116 | if (val & 7) | |
8117 | continue; | |
8118 | ||
8119 | if (skip == NULL) | |
8120 | { | |
854b41e7 | 8121 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8122 | if (skip == NULL) |
8123 | goto error_ret; | |
8124 | } | |
8125 | ||
ba761f19 | 8126 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8127 | } |
8128 | ||
8129 | if (elf_section_data (sec)->relocs != relstart) | |
8130 | free (relstart); | |
8131 | } | |
8132 | ||
ba761f19 AM |
8133 | /* For largetoc loads of address constants, we can convert |
8134 | . addis rx,2,addr@got@ha | |
8135 | . ld ry,addr@got@l(rx) | |
8136 | to | |
8137 | . addis rx,2,addr@toc@ha | |
8138 | . addi ry,rx,addr@toc@l | |
8139 | when addr is within 2G of the toc pointer. This then means | |
8140 | that the word storing "addr" in the toc is no longer needed. */ | |
8141 | ||
8142 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc | |
8143 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8144 | && toc->reloc_count != 0) | |
8145 | { | |
8146 | /* Read toc relocs. */ | |
425b145b AM |
8147 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8148 | info->keep_memory); | |
8149 | if (toc_relocs == NULL) | |
ba761f19 AM |
8150 | goto error_ret; |
8151 | ||
425b145b | 8152 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8153 | { |
8154 | enum elf_ppc64_reloc_type r_type; | |
8155 | unsigned long r_symndx; | |
8156 | asection *sym_sec; | |
8157 | struct elf_link_hash_entry *h; | |
8158 | Elf_Internal_Sym *sym; | |
8159 | bfd_vma val, addr; | |
8160 | ||
8161 | r_type = ELF64_R_TYPE (rel->r_info); | |
8162 | if (r_type != R_PPC64_ADDR64) | |
8163 | continue; | |
8164 | ||
8165 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8166 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8167 | r_symndx, ibfd)) | |
8168 | goto error_ret; | |
8169 | ||
425b145b AM |
8170 | if (sym_sec == NULL |
8171 | || elf_discarded_section (sym_sec)) | |
8172 | continue; | |
8173 | ||
726d3ab0 | 8174 | if (!SYMBOL_CALLS_LOCAL (info, h)) |
ba761f19 AM |
8175 | continue; |
8176 | ||
8177 | if (h != NULL) | |
bddc25c9 AM |
8178 | { |
8179 | if (h->type == STT_GNU_IFUNC) | |
8180 | continue; | |
8181 | val = h->root.u.def.value; | |
8182 | } | |
ba761f19 | 8183 | else |
bddc25c9 AM |
8184 | { |
8185 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8186 | continue; | |
8187 | val = sym->st_value; | |
8188 | } | |
ba761f19 AM |
8189 | val += rel->r_addend; |
8190 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8191 | ||
8192 | /* We don't yet know the exact toc pointer value, but we | |
8193 | know it will be somewhere in the toc section. Don't | |
8194 | optimize if the difference from any possible toc | |
8195 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8196 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8197 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8198 | continue; | |
8199 | ||
8200 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8201 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8202 | continue; | |
8203 | ||
8204 | if (skip == NULL) | |
8205 | { | |
8206 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8207 | if (skip == NULL) | |
8208 | goto error_ret; | |
8209 | } | |
8210 | ||
8211 | skip[rel->r_offset >> 3] | |
425b145b | 8212 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8213 | } |
ba761f19 AM |
8214 | } |
8215 | ||
c5614fa4 AM |
8216 | if (skip == NULL) |
8217 | continue; | |
8218 | ||
8219 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8220 | if (used == NULL) | |
8221 | { | |
8222 | error_ret: | |
8223 | if (local_syms != NULL | |
8224 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8225 | free (local_syms); | |
8226 | if (sec != NULL | |
8227 | && relstart != NULL | |
8228 | && elf_section_data (sec)->relocs != relstart) | |
8229 | free (relstart); | |
425b145b AM |
8230 | if (toc_relocs != NULL |
8231 | && elf_section_data (toc)->relocs != toc_relocs) | |
8232 | free (toc_relocs); | |
c5614fa4 AM |
8233 | if (skip != NULL) |
8234 | free (skip); | |
8235 | return FALSE; | |
8236 | } | |
8237 | ||
30038c59 AM |
8238 | /* Now check all kept sections that might reference the toc. |
8239 | Check the toc itself last. */ | |
8240 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8241 | : ibfd->sections); | |
c5614fa4 | 8242 | sec != NULL; |
c5614fa4 | 8243 | sec = (sec == toc ? NULL |
c5614fa4 | 8244 | : sec->next == NULL ? toc |
30038c59 | 8245 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8246 | : sec->next)) |
8247 | { | |
8248 | int repeat; | |
8249 | ||
8250 | if (sec->reloc_count == 0 | |
8251 | || elf_discarded_section (sec) | |
8252 | || get_opd_info (sec) | |
8253 | || (sec->flags & SEC_ALLOC) == 0 | |
8254 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8255 | continue; | |
8256 | ||
854b41e7 AM |
8257 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8258 | info->keep_memory); | |
c5614fa4 AM |
8259 | if (relstart == NULL) |
8260 | goto error_ret; | |
8261 | ||
8262 | /* Mark toc entries referenced as used. */ | |
8263 | repeat = 0; | |
8264 | do | |
8265 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8266 | { | |
8267 | enum elf_ppc64_reloc_type r_type; | |
8268 | unsigned long r_symndx; | |
8269 | asection *sym_sec; | |
8270 | struct elf_link_hash_entry *h; | |
8271 | Elf_Internal_Sym *sym; | |
8272 | bfd_vma val; | |
8273 | ||
8274 | r_type = ELF64_R_TYPE (rel->r_info); | |
98528052 AM |
8275 | switch (r_type) |
8276 | { | |
8277 | default: | |
8278 | break; | |
8279 | ||
8280 | case R_PPC64_GOT_TLSLD16_HA: | |
8281 | case R_PPC64_GOT_TLSGD16_HA: | |
8282 | case R_PPC64_GOT_TPREL16_HA: | |
8283 | case R_PPC64_GOT_DTPREL16_HA: | |
8284 | case R_PPC64_GOT16_HA: | |
8285 | case R_PPC64_TOC16_HA: | |
8286 | { | |
8287 | bfd_vma off = rel->r_offset & ~3; | |
8288 | unsigned char buf[4]; | |
8289 | unsigned int insn; | |
8290 | ||
8291 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
8292 | { | |
8293 | free (used); | |
8294 | goto error_ret; | |
8295 | } | |
8296 | insn = bfd_get_32 (ibfd, buf); | |
8297 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
8298 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */) | |
8299 | ppc64_elf_tdata (ibfd)->ha_relocs_not_using_r2 = 1; | |
8300 | } | |
8301 | break; | |
8302 | } | |
8303 | ||
c5614fa4 AM |
8304 | switch (r_type) |
8305 | { | |
8306 | case R_PPC64_TOC16: | |
8307 | case R_PPC64_TOC16_LO: | |
8308 | case R_PPC64_TOC16_HI: | |
8309 | case R_PPC64_TOC16_HA: | |
8310 | case R_PPC64_TOC16_DS: | |
8311 | case R_PPC64_TOC16_LO_DS: | |
8312 | /* In case we're taking addresses of toc entries. */ | |
8313 | case R_PPC64_ADDR64: | |
8314 | break; | |
8315 | ||
8316 | default: | |
8317 | continue; | |
8318 | } | |
8319 | ||
8320 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8321 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8322 | r_symndx, ibfd)) | |
8323 | { | |
8324 | free (used); | |
8325 | goto error_ret; | |
8326 | } | |
8327 | ||
8328 | if (sym_sec != toc) | |
8329 | continue; | |
8330 | ||
8331 | if (h != NULL) | |
8332 | val = h->root.u.def.value; | |
8333 | else | |
8334 | val = sym->st_value; | |
8335 | val += rel->r_addend; | |
8336 | ||
8337 | if (val >= toc->size) | |
8338 | continue; | |
8339 | ||
ba761f19 AM |
8340 | if ((skip[val >> 3] & can_optimize) != 0) |
8341 | { | |
8342 | bfd_vma off; | |
8343 | unsigned char opc; | |
8344 | ||
8345 | switch (r_type) | |
8346 | { | |
8347 | case R_PPC64_TOC16_HA: | |
8348 | break; | |
8349 | ||
8350 | case R_PPC64_TOC16_LO_DS: | |
8351 | off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3); | |
8352 | if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1)) | |
98528052 AM |
8353 | { |
8354 | free (used); | |
8355 | goto error_ret; | |
8356 | } | |
ba761f19 AM |
8357 | if ((opc & (0x3f << 2)) == (58u << 2)) |
8358 | break; | |
8359 | /* Fall thru */ | |
8360 | ||
8361 | default: | |
8362 | /* Wrong sort of reloc, or not a ld. We may | |
8363 | as well clear ref_from_discarded too. */ | |
8364 | skip[val >> 3] = 0; | |
8365 | } | |
8366 | } | |
8367 | ||
c5614fa4 AM |
8368 | /* For the toc section, we only mark as used if |
8369 | this entry itself isn't unused. */ | |
8370 | if (sec == toc | |
8371 | && !used[val >> 3] | |
8372 | && (used[rel->r_offset >> 3] | |
ba761f19 | 8373 | || !(skip[rel->r_offset >> 3] & ref_from_discarded))) |
c5614fa4 AM |
8374 | /* Do all the relocs again, to catch reference |
8375 | chains. */ | |
8376 | repeat = 1; | |
8377 | ||
8378 | used[val >> 3] = 1; | |
8379 | } | |
8380 | while (repeat); | |
854b41e7 AM |
8381 | |
8382 | if (elf_section_data (sec)->relocs != relstart) | |
8383 | free (relstart); | |
c5614fa4 AM |
8384 | } |
8385 | ||
8386 | /* Merge the used and skip arrays. Assume that TOC | |
8387 | doublewords not appearing as either used or unused belong | |
8388 | to to an entry more than one doubleword in size. */ | |
8389 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
8390 | drop < skip + (toc->size + 7) / 8; | |
8391 | ++drop, ++keep) | |
8392 | { | |
8393 | if (*keep) | |
8394 | { | |
ba761f19 AM |
8395 | *drop &= ~ref_from_discarded; |
8396 | if ((*drop & can_optimize) != 0) | |
8397 | some_unused = 1; | |
c5614fa4 AM |
8398 | last = 0; |
8399 | } | |
b140b010 | 8400 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
8401 | { |
8402 | some_unused = 1; | |
ba761f19 | 8403 | last = ref_from_discarded; |
c5614fa4 AM |
8404 | } |
8405 | else | |
8406 | *drop = last; | |
8407 | } | |
8408 | ||
8409 | free (used); | |
8410 | ||
8411 | if (some_unused) | |
8412 | { | |
8413 | bfd_byte *contents, *src; | |
8414 | unsigned long off; | |
d62b3684 | 8415 | Elf_Internal_Sym *sym; |
ba761f19 | 8416 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
8417 | |
8418 | /* Shuffle the toc contents, and at the same time convert the | |
8419 | skip array from booleans into offsets. */ | |
8420 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
8421 | goto error_ret; | |
8422 | ||
8423 | elf_section_data (toc)->this_hdr.contents = contents; | |
8424 | ||
8425 | for (src = contents, off = 0, drop = skip; | |
8426 | src < contents + toc->size; | |
8427 | src += 8, ++drop) | |
8428 | { | |
ba761f19 AM |
8429 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
8430 | off += 8; | |
c5614fa4 AM |
8431 | else if (off != 0) |
8432 | { | |
8433 | *drop = off; | |
8434 | memcpy (src - off, src, 8); | |
8435 | } | |
8436 | } | |
854b41e7 | 8437 | *drop = off; |
c5614fa4 AM |
8438 | toc->rawsize = toc->size; |
8439 | toc->size = src - contents - off; | |
8440 | ||
ba761f19 AM |
8441 | /* Adjust addends for relocs against the toc section sym, |
8442 | and optimize any accesses we can. */ | |
c5614fa4 AM |
8443 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8444 | { | |
8445 | if (sec->reloc_count == 0 | |
8446 | || elf_discarded_section (sec)) | |
8447 | continue; | |
8448 | ||
8449 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 8450 | info->keep_memory); |
c5614fa4 AM |
8451 | if (relstart == NULL) |
8452 | goto error_ret; | |
8453 | ||
8454 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8455 | { | |
8456 | enum elf_ppc64_reloc_type r_type; | |
8457 | unsigned long r_symndx; | |
8458 | asection *sym_sec; | |
8459 | struct elf_link_hash_entry *h; | |
854b41e7 | 8460 | bfd_vma val; |
c5614fa4 AM |
8461 | |
8462 | r_type = ELF64_R_TYPE (rel->r_info); | |
8463 | switch (r_type) | |
8464 | { | |
8465 | default: | |
8466 | continue; | |
8467 | ||
8468 | case R_PPC64_TOC16: | |
8469 | case R_PPC64_TOC16_LO: | |
8470 | case R_PPC64_TOC16_HI: | |
8471 | case R_PPC64_TOC16_HA: | |
8472 | case R_PPC64_TOC16_DS: | |
8473 | case R_PPC64_TOC16_LO_DS: | |
8474 | case R_PPC64_ADDR64: | |
8475 | break; | |
8476 | } | |
8477 | ||
8478 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8479 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8480 | r_symndx, ibfd)) | |
8481 | goto error_ret; | |
8482 | ||
ba761f19 | 8483 | if (sym_sec != toc) |
c5614fa4 AM |
8484 | continue; |
8485 | ||
ba761f19 AM |
8486 | if (h != NULL) |
8487 | val = h->root.u.def.value; | |
8488 | else | |
8489 | { | |
8490 | val = sym->st_value; | |
8491 | if (val != 0) | |
8492 | local_toc_syms = TRUE; | |
8493 | } | |
8494 | ||
8495 | val += rel->r_addend; | |
854b41e7 AM |
8496 | |
8497 | if (val > toc->rawsize) | |
8498 | val = toc->rawsize; | |
ba761f19 AM |
8499 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
8500 | continue; | |
8501 | else if ((skip[val >> 3] & can_optimize) != 0) | |
8502 | { | |
8503 | Elf_Internal_Rela *tocrel | |
425b145b | 8504 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
8505 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
8506 | ||
8507 | switch (r_type) | |
8508 | { | |
8509 | case R_PPC64_TOC16_HA: | |
8510 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
8511 | break; | |
8512 | ||
8513 | case R_PPC64_TOC16_LO_DS: | |
8514 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
8515 | break; | |
8516 | ||
8517 | default: | |
28942f62 AM |
8518 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
8519 | ppc_howto_init (); | |
b140b010 AM |
8520 | info->callbacks->einfo |
8521 | (_("%P: %H: %s relocation references " | |
8522 | "optimized away TOC entry\n"), | |
8523 | ibfd, sec, rel->r_offset, | |
8524 | ppc64_elf_howto_table[r_type]->name); | |
8525 | bfd_set_error (bfd_error_bad_value); | |
8526 | goto error_ret; | |
ba761f19 AM |
8527 | } |
8528 | rel->r_addend = tocrel->r_addend; | |
8529 | elf_section_data (sec)->relocs = relstart; | |
8530 | continue; | |
8531 | } | |
8532 | ||
8533 | if (h != NULL || sym->st_value != 0) | |
8534 | continue; | |
854b41e7 AM |
8535 | |
8536 | rel->r_addend -= skip[val >> 3]; | |
8537 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 8538 | } |
854b41e7 AM |
8539 | |
8540 | if (elf_section_data (sec)->relocs != relstart) | |
8541 | free (relstart); | |
c5614fa4 AM |
8542 | } |
8543 | ||
8544 | /* We shouldn't have local or global symbols defined in the TOC, | |
8545 | but handle them anyway. */ | |
df22d223 AM |
8546 | if (local_syms != NULL) |
8547 | for (sym = local_syms; | |
8548 | sym < local_syms + symtab_hdr->sh_info; | |
8549 | ++sym) | |
8550 | if (sym->st_value != 0 | |
8551 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
8552 | { | |
8553 | unsigned long i; | |
854b41e7 | 8554 | |
df22d223 AM |
8555 | if (sym->st_value > toc->rawsize) |
8556 | i = toc->rawsize >> 3; | |
8557 | else | |
8558 | i = sym->st_value >> 3; | |
854b41e7 | 8559 | |
df22d223 AM |
8560 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
8561 | { | |
8562 | if (local_toc_syms) | |
8563 | (*_bfd_error_handler) | |
8564 | (_("%s defined on removed toc entry"), | |
8565 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
8566 | do | |
8567 | ++i; | |
8568 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
8569 | sym->st_value = (bfd_vma) i << 3; | |
8570 | } | |
d62b3684 | 8571 | |
df22d223 AM |
8572 | sym->st_value -= skip[i]; |
8573 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8574 | } | |
c5614fa4 | 8575 | |
854b41e7 | 8576 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
8577 | if (toc_inf.global_toc_syms) |
8578 | { | |
8579 | toc_inf.toc = toc; | |
8580 | toc_inf.skip = skip; | |
8581 | toc_inf.global_toc_syms = FALSE; | |
8582 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
8583 | &toc_inf); | |
8584 | } | |
854b41e7 AM |
8585 | |
8586 | if (toc->reloc_count != 0) | |
8587 | { | |
d4730f92 | 8588 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
8589 | Elf_Internal_Rela *wrel; |
8590 | bfd_size_type sz; | |
8591 | ||
854b41e7 | 8592 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
8593 | if (toc_relocs == NULL) |
8594 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
8595 | info->keep_memory); | |
8596 | if (toc_relocs == NULL) | |
8597 | goto error_ret; | |
8598 | ||
425b145b AM |
8599 | wrel = toc_relocs; |
8600 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
8601 | if ((skip[rel->r_offset >> 3] |
8602 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
8603 | { |
8604 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
8605 | wrel->r_info = rel->r_info; | |
8606 | wrel->r_addend = rel->r_addend; | |
8607 | ++wrel; | |
8608 | } | |
8609 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
8610 | &local_syms, NULL, NULL)) | |
8611 | goto error_ret; | |
8612 | ||
425b145b AM |
8613 | elf_section_data (toc)->relocs = toc_relocs; |
8614 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
8615 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
8616 | sz = rel_hdr->sh_entsize; | |
8617 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 8618 | } |
c5614fa4 | 8619 | } |
28be611c AM |
8620 | else if (toc_relocs != NULL |
8621 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 8622 | free (toc_relocs); |
c5614fa4 AM |
8623 | |
8624 | if (local_syms != NULL | |
8625 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8626 | { | |
8627 | if (!info->keep_memory) | |
8628 | free (local_syms); | |
8629 | else | |
8630 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8631 | } | |
8632 | free (skip); | |
8633 | } | |
8634 | ||
8635 | return TRUE; | |
8636 | } | |
8637 | ||
1bbe0902 AM |
8638 | /* Return true iff input section I references the TOC using |
8639 | instructions limited to +/-32k offsets. */ | |
8640 | ||
8641 | bfd_boolean | |
8642 | ppc64_elf_has_small_toc_reloc (asection *i) | |
8643 | { | |
8644 | return (is_ppc64_elf (i->owner) | |
8645 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
8646 | } | |
8647 | ||
927be08e AM |
8648 | /* Allocate space for one GOT entry. */ |
8649 | ||
8650 | static void | |
8651 | allocate_got (struct elf_link_hash_entry *h, | |
8652 | struct bfd_link_info *info, | |
8653 | struct got_entry *gent) | |
8654 | { | |
8655 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8656 | bfd_boolean dyn; | |
8657 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8658 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
8659 | ? 16 : 8); | |
8660 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
8661 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
8662 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
8663 | ||
8664 | gent->got.offset = got->size; | |
8665 | got->size += entsize; | |
8666 | ||
8667 | dyn = htab->elf.dynamic_sections_created; | |
8668 | if ((info->shared | |
8669 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
8670 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
8671 | || h->root.type != bfd_link_hash_undefweak)) | |
8672 | { | |
8673 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; | |
8674 | relgot->size += rentsize; | |
8675 | } | |
8676 | else if (h->type == STT_GNU_IFUNC) | |
8677 | { | |
8678 | asection *relgot = htab->reliplt; | |
8679 | relgot->size += rentsize; | |
8680 | htab->got_reli_size += rentsize; | |
8681 | } | |
8682 | } | |
8683 | ||
7865406b AM |
8684 | /* This function merges got entries in the same toc group. */ |
8685 | ||
8686 | static void | |
8687 | merge_got_entries (struct got_entry **pent) | |
8688 | { | |
8689 | struct got_entry *ent, *ent2; | |
8690 | ||
8691 | for (ent = *pent; ent != NULL; ent = ent->next) | |
8692 | if (!ent->is_indirect) | |
8693 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
8694 | if (!ent2->is_indirect | |
8695 | && ent2->addend == ent->addend | |
8696 | && ent2->tls_type == ent->tls_type | |
8697 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
8698 | { | |
8699 | ent2->is_indirect = TRUE; | |
8700 | ent2->got.ent = ent; | |
8701 | } | |
8702 | } | |
8703 | ||
65f38f15 AM |
8704 | /* Allocate space in .plt, .got and associated reloc sections for |
8705 | dynamic relocs. */ | |
5bd4f169 | 8706 | |
b34976b6 | 8707 | static bfd_boolean |
4ce794b7 | 8708 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 8709 | { |
65f38f15 AM |
8710 | struct bfd_link_info *info; |
8711 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 8712 | asection *s; |
65f38f15 | 8713 | struct ppc_link_hash_entry *eh; |
6061a67d | 8714 | struct elf_dyn_relocs *p; |
0b8bcf0d | 8715 | struct got_entry **pgent, *gent; |
5bd4f169 | 8716 | |
e92d460e | 8717 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 8718 | return TRUE; |
5bd4f169 | 8719 | |
65f38f15 AM |
8720 | info = (struct bfd_link_info *) inf; |
8721 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8722 | if (htab == NULL) |
8723 | return FALSE; | |
5bd4f169 | 8724 | |
e054468f AM |
8725 | if ((htab->elf.dynamic_sections_created |
8726 | && h->dynindx != -1 | |
8727 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
8728 | || h->type == STT_GNU_IFUNC) | |
5bd4f169 | 8729 | { |
411e1bfb AM |
8730 | struct plt_entry *pent; |
8731 | bfd_boolean doneone = FALSE; | |
8732 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
8733 | if (pent->plt.refcount > 0) | |
8734 | { | |
25f23106 AM |
8735 | if (!htab->elf.dynamic_sections_created |
8736 | || h->dynindx == -1) | |
e054468f AM |
8737 | { |
8738 | s = htab->iplt; | |
8739 | pent->plt.offset = s->size; | |
8740 | s->size += PLT_ENTRY_SIZE; | |
8741 | s = htab->reliplt; | |
8742 | } | |
8743 | else | |
8744 | { | |
8745 | /* If this is the first .plt entry, make room for the special | |
8746 | first entry. */ | |
8747 | s = htab->plt; | |
8748 | if (s->size == 0) | |
8749 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
8750 | ||
8751 | pent->plt.offset = s->size; | |
8752 | ||
8753 | /* Make room for this entry. */ | |
8754 | s->size += PLT_ENTRY_SIZE; | |
8755 | ||
8756 | /* Make room for the .glink code. */ | |
8757 | s = htab->glink; | |
8758 | if (s->size == 0) | |
8759 | s->size += GLINK_CALL_STUB_SIZE; | |
8760 | /* We need bigger stubs past index 32767. */ | |
8761 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
8762 | s->size += 4; | |
8763 | s->size += 2*4; | |
8764 | ||
8765 | /* We also need to make an entry in the .rela.plt section. */ | |
8766 | s = htab->relplt; | |
8767 | } | |
eea6121a | 8768 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
8769 | doneone = TRUE; |
8770 | } | |
8771 | else | |
8772 | pent->plt.offset = (bfd_vma) -1; | |
8773 | if (!doneone) | |
65f38f15 | 8774 | { |
411e1bfb | 8775 | h->plt.plist = NULL; |
f5385ebf | 8776 | h->needs_plt = 0; |
65f38f15 AM |
8777 | } |
8778 | } | |
8779 | else | |
8780 | { | |
411e1bfb | 8781 | h->plt.plist = NULL; |
f5385ebf | 8782 | h->needs_plt = 0; |
65f38f15 AM |
8783 | } |
8784 | ||
951fd09b AM |
8785 | eh = (struct ppc_link_hash_entry *) h; |
8786 | /* Run through the TLS GD got entries first if we're changing them | |
8787 | to TPREL. */ | |
e7b938ca | 8788 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
8789 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
8790 | if (gent->got.refcount > 0 | |
8791 | && (gent->tls_type & TLS_GD) != 0) | |
8792 | { | |
8793 | /* This was a GD entry that has been converted to TPREL. If | |
8794 | there happens to be a TPREL entry we can use that one. */ | |
8795 | struct got_entry *ent; | |
8796 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
8797 | if (ent->got.refcount > 0 | |
8798 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
8799 | && ent->addend == gent->addend |
8800 | && ent->owner == gent->owner) | |
951fd09b AM |
8801 | { |
8802 | gent->got.refcount = 0; | |
8803 | break; | |
8804 | } | |
8805 | ||
8806 | /* If not, then we'll be using our own TPREL entry. */ | |
8807 | if (gent->got.refcount != 0) | |
8808 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
8809 | } | |
8810 | ||
7865406b AM |
8811 | /* Remove any list entry that won't generate a word in the GOT before |
8812 | we call merge_got_entries. Otherwise we risk merging to empty | |
8813 | entries. */ | |
0b8bcf0d AM |
8814 | pgent = &h->got.glist; |
8815 | while ((gent = *pgent) != NULL) | |
411e1bfb | 8816 | if (gent->got.refcount > 0) |
7865406b AM |
8817 | { |
8818 | if ((gent->tls_type & TLS_LD) != 0 | |
8819 | && !h->def_dynamic) | |
8820 | { | |
8821 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
8822 | *pgent = gent->next; | |
8823 | } | |
8824 | else | |
8825 | pgent = &gent->next; | |
8826 | } | |
8827 | else | |
8828 | *pgent = gent->next; | |
8829 | ||
8830 | if (!htab->do_multi_toc) | |
8831 | merge_got_entries (&h->got.glist); | |
8832 | ||
8833 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
8834 | if (!gent->is_indirect) | |
411e1bfb AM |
8835 | { |
8836 | /* Make sure this symbol is output as a dynamic symbol. | |
951fd09b AM |
8837 | Undefined weak syms won't yet be marked as dynamic, |
8838 | nor will all TLS symbols. */ | |
411e1bfb | 8839 | if (h->dynindx == -1 |
b099ab9f | 8840 | && !h->forced_local |
25f23106 | 8841 | && h->type != STT_GNU_IFUNC |
b099ab9f | 8842 | && htab->elf.dynamic_sections_created) |
411e1bfb | 8843 | { |
c152c796 | 8844 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
8845 | return FALSE; |
8846 | } | |
65f38f15 | 8847 | |
0c8d6e5c | 8848 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 8849 | abort (); |
0ffa91dd | 8850 | |
927be08e | 8851 | allocate_got (h, info, gent); |
411e1bfb | 8852 | } |
65f38f15 | 8853 | |
b099ab9f | 8854 | if (eh->dyn_relocs == NULL |
25f23106 AM |
8855 | || (!htab->elf.dynamic_sections_created |
8856 | && h->type != STT_GNU_IFUNC)) | |
b34976b6 | 8857 | return TRUE; |
65f38f15 AM |
8858 | |
8859 | /* In the shared -Bsymbolic case, discard space allocated for | |
8860 | dynamic pc-relative relocs against symbols which turn out to be | |
8861 | defined in regular objects. For the normal shared case, discard | |
8862 | space for relocs that have become local due to symbol visibility | |
8863 | changes. */ | |
8864 | ||
8865 | if (info->shared) | |
8866 | { | |
9c7a29a3 | 8867 | /* Relocs that use pc_count are those that appear on a call insn, |
1d483afe | 8868 | or certain REL relocs (see must_be_dyn_reloc) that can be |
9c7a29a3 AM |
8869 | generated via assembly. We want calls to protected symbols to |
8870 | resolve directly to the function rather than going via the plt. | |
8871 | If people want function pointer comparisons to work as expected | |
8872 | then they should avoid writing weird assembly. */ | |
09695f56 | 8873 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 | 8874 | { |
6061a67d | 8875 | struct elf_dyn_relocs **pp; |
65f38f15 AM |
8876 | |
8877 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 8878 | { |
65f38f15 AM |
8879 | p->count -= p->pc_count; |
8880 | p->pc_count = 0; | |
8881 | if (p->count == 0) | |
8882 | *pp = p->next; | |
8883 | else | |
8884 | pp = &p->next; | |
5bd4f169 | 8885 | } |
65f38f15 | 8886 | } |
4e795f50 AM |
8887 | |
8888 | /* Also discard relocs on undefined weak syms with non-default | |
8889 | visibility. */ | |
cab87ef9 AM |
8890 | if (eh->dyn_relocs != NULL |
8891 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
8892 | { |
8893 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
8894 | eh->dyn_relocs = NULL; | |
8895 | ||
8896 | /* Make sure this symbol is output as a dynamic symbol. | |
8897 | Undefined weak syms won't yet be marked as dynamic. */ | |
8898 | else if (h->dynindx == -1 | |
8899 | && !h->forced_local) | |
8900 | { | |
8901 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
8902 | return FALSE; | |
8903 | } | |
8904 | } | |
65f38f15 | 8905 | } |
25f23106 AM |
8906 | else if (h->type == STT_GNU_IFUNC) |
8907 | { | |
8908 | if (!h->non_got_ref) | |
8909 | eh->dyn_relocs = NULL; | |
8910 | } | |
f4656909 | 8911 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
8912 | { |
8913 | /* For the non-shared case, discard space for relocs against | |
8914 | symbols which turn out to need copy relocs or are not | |
8915 | dynamic. */ | |
8916 | ||
f5385ebf | 8917 | if (!h->non_got_ref |
f5385ebf | 8918 | && !h->def_regular) |
65f38f15 AM |
8919 | { |
8920 | /* Make sure this symbol is output as a dynamic symbol. | |
8921 | Undefined weak syms won't yet be marked as dynamic. */ | |
8922 | if (h->dynindx == -1 | |
f5385ebf | 8923 | && !h->forced_local) |
65f38f15 | 8924 | { |
c152c796 | 8925 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 8926 | return FALSE; |
65f38f15 AM |
8927 | } |
8928 | ||
8929 | /* If that succeeded, we know we'll be keeping all the | |
8930 | relocs. */ | |
8931 | if (h->dynindx != -1) | |
8932 | goto keep; | |
8933 | } | |
8934 | ||
8935 | eh->dyn_relocs = NULL; | |
8936 | ||
ec338859 | 8937 | keep: ; |
65f38f15 AM |
8938 | } |
8939 | ||
8940 | /* Finally, allocate space. */ | |
8941 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8942 | { | |
8943 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
8944 | if (!htab->elf.dynamic_sections_created) |
8945 | sreloc = htab->reliplt; | |
eea6121a | 8946 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
8947 | } |
8948 | ||
b34976b6 | 8949 | return TRUE; |
65f38f15 AM |
8950 | } |
8951 | ||
8952 | /* Find any dynamic relocs that apply to read-only sections. */ | |
8953 | ||
b34976b6 | 8954 | static bfd_boolean |
4ce794b7 | 8955 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
8956 | { |
8957 | struct ppc_link_hash_entry *eh; | |
6061a67d | 8958 | struct elf_dyn_relocs *p; |
65f38f15 AM |
8959 | |
8960 | eh = (struct ppc_link_hash_entry *) h; | |
8961 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
8962 | { | |
8963 | asection *s = p->sec->output_section; | |
8964 | ||
8965 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
8966 | { | |
4ce794b7 | 8967 | struct bfd_link_info *info = inf; |
65f38f15 AM |
8968 | |
8969 | info->flags |= DF_TEXTREL; | |
8970 | ||
8971 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 8972 | return FALSE; |
65f38f15 AM |
8973 | } |
8974 | } | |
b34976b6 | 8975 | return TRUE; |
65f38f15 AM |
8976 | } |
8977 | ||
8978 | /* Set the sizes of the dynamic sections. */ | |
8979 | ||
b34976b6 | 8980 | static bfd_boolean |
4ce794b7 AM |
8981 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
8982 | struct bfd_link_info *info) | |
65f38f15 AM |
8983 | { |
8984 | struct ppc_link_hash_table *htab; | |
8985 | bfd *dynobj; | |
8986 | asection *s; | |
b34976b6 | 8987 | bfd_boolean relocs; |
65f38f15 | 8988 | bfd *ibfd; |
7865406b | 8989 | struct got_entry *first_tlsld; |
65f38f15 AM |
8990 | |
8991 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
8992 | if (htab == NULL) |
8993 | return FALSE; | |
8994 | ||
65f38f15 AM |
8995 | dynobj = htab->elf.dynobj; |
8996 | if (dynobj == NULL) | |
8997 | abort (); | |
8998 | ||
8999 | if (htab->elf.dynamic_sections_created) | |
9000 | { | |
9001 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 9002 | if (info->executable) |
65f38f15 AM |
9003 | { |
9004 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
9005 | if (s == NULL) | |
9006 | abort (); | |
eea6121a | 9007 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9008 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9009 | } | |
9010 | } | |
9011 | ||
9012 | /* Set up .got offsets for local syms, and space for local dynamic | |
9013 | relocs. */ | |
9014 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
9015 | { | |
411e1bfb AM |
9016 | struct got_entry **lgot_ents; |
9017 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9018 | struct plt_entry **local_plt; |
9019 | struct plt_entry **end_local_plt; | |
f961d9dd | 9020 | unsigned char *lgot_masks; |
65f38f15 AM |
9021 | bfd_size_type locsymcount; |
9022 | Elf_Internal_Shdr *symtab_hdr; | |
9023 | asection *srel; | |
9024 | ||
0c8d6e5c | 9025 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9026 | continue; |
9027 | ||
9028 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9029 | { | |
6061a67d | 9030 | struct elf_dyn_relocs *p; |
65f38f15 | 9031 | |
6edfbbad | 9032 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9033 | { |
ec338859 AM |
9034 | if (!bfd_is_abs_section (p->sec) |
9035 | && bfd_is_abs_section (p->sec->output_section)) | |
9036 | { | |
9037 | /* Input section has been discarded, either because | |
9038 | it is a copy of a linkonce section or due to | |
9039 | linker script /DISCARD/, so we'll be discarding | |
9040 | the relocs too. */ | |
9041 | } | |
248866a8 | 9042 | else if (p->count != 0) |
ec338859 AM |
9043 | { |
9044 | srel = elf_section_data (p->sec)->sreloc; | |
25f23106 AM |
9045 | if (!htab->elf.dynamic_sections_created) |
9046 | srel = htab->reliplt; | |
eea6121a | 9047 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9048 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9049 | info->flags |= DF_TEXTREL; | |
ec338859 | 9050 | } |
65f38f15 AM |
9051 | } |
9052 | } | |
9053 | ||
411e1bfb AM |
9054 | lgot_ents = elf_local_got_ents (ibfd); |
9055 | if (!lgot_ents) | |
65f38f15 AM |
9056 | continue; |
9057 | ||
0ffa91dd | 9058 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9059 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9060 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9061 | local_plt = (struct plt_entry **) end_lgot_ents; |
9062 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9063 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e AM |
9064 | s = ppc64_elf_tdata (ibfd)->got; |
9065 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 9066 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9067 | { |
0b8bcf0d | 9068 | struct got_entry **pent, *ent; |
411e1bfb | 9069 | |
0b8bcf0d AM |
9070 | pent = lgot_ents; |
9071 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9072 | if (ent->got.refcount > 0) |
9073 | { | |
e7b938ca | 9074 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9075 | { |
927be08e | 9076 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 9077 | *pent = ent->next; |
411e1bfb AM |
9078 | } |
9079 | else | |
9080 | { | |
25f23106 | 9081 | unsigned int num = 1; |
eea6121a | 9082 | ent->got.offset = s->size; |
e7b938ca | 9083 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
25f23106 AM |
9084 | num = 2; |
9085 | s->size += num * 8; | |
9086 | if (info->shared) | |
9087 | srel->size += num * sizeof (Elf64_External_Rela); | |
9088 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
927be08e AM |
9089 | { |
9090 | htab->reliplt->size | |
9091 | += num * sizeof (Elf64_External_Rela); | |
9092 | htab->got_reli_size | |
9093 | += num * sizeof (Elf64_External_Rela); | |
9094 | } | |
0b8bcf0d | 9095 | pent = &ent->next; |
411e1bfb AM |
9096 | } |
9097 | } | |
9098 | else | |
0b8bcf0d | 9099 | *pent = ent->next; |
65f38f15 | 9100 | } |
e054468f AM |
9101 | |
9102 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
9103 | for (; local_plt < end_local_plt; ++local_plt) | |
9104 | { | |
9105 | struct plt_entry *ent; | |
9106 | ||
9107 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
9108 | if (ent->plt.refcount > 0) | |
9109 | { | |
91d6fa6a | 9110 | s = htab->iplt; |
e054468f AM |
9111 | ent->plt.offset = s->size; |
9112 | s->size += PLT_ENTRY_SIZE; | |
9113 | ||
25f23106 | 9114 | htab->reliplt->size += sizeof (Elf64_External_Rela); |
e054468f AM |
9115 | } |
9116 | else | |
9117 | ent->plt.offset = (bfd_vma) -1; | |
9118 | } | |
65f38f15 AM |
9119 | } |
9120 | ||
9121 | /* Allocate global sym .plt and .got entries, and space for global | |
9122 | sym dynamic relocs. */ | |
4ce794b7 | 9123 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 | 9124 | |
7865406b | 9125 | first_tlsld = NULL; |
102890f0 AM |
9126 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9127 | { | |
7865406b AM |
9128 | struct got_entry *ent; |
9129 | ||
0c8d6e5c | 9130 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
9131 | continue; |
9132 | ||
7865406b AM |
9133 | ent = ppc64_tlsld_got (ibfd); |
9134 | if (ent->got.refcount > 0) | |
102890f0 | 9135 | { |
7865406b | 9136 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 9137 | { |
7865406b AM |
9138 | ent->is_indirect = TRUE; |
9139 | ent->got.ent = first_tlsld; | |
9140 | } | |
9141 | else | |
9142 | { | |
9143 | if (first_tlsld == NULL) | |
9144 | first_tlsld = ent; | |
9145 | s = ppc64_elf_tdata (ibfd)->got; | |
9146 | ent->got.offset = s->size; | |
9147 | ent->owner = ibfd; | |
9148 | s->size += 16; | |
9149 | if (info->shared) | |
9150 | { | |
9151 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
9152 | srel->size += sizeof (Elf64_External_Rela); | |
9153 | } | |
102890f0 AM |
9154 | } |
9155 | } | |
9156 | else | |
7865406b | 9157 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
9158 | } |
9159 | ||
65f38f15 AM |
9160 | /* We now have determined the sizes of the various dynamic sections. |
9161 | Allocate memory for them. */ | |
b34976b6 | 9162 | relocs = FALSE; |
65f38f15 AM |
9163 | for (s = dynobj->sections; s != NULL; s = s->next) |
9164 | { | |
9165 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
9166 | continue; | |
9167 | ||
4ce794b7 | 9168 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
9169 | /* These haven't been allocated yet; don't strip. */ |
9170 | continue; | |
e717da7e AM |
9171 | else if (s == htab->got |
9172 | || s == htab->plt | |
e054468f | 9173 | || s == htab->iplt |
c456f082 AM |
9174 | || s == htab->glink |
9175 | || s == htab->dynbss) | |
65f38f15 AM |
9176 | { |
9177 | /* Strip this section if we don't need it; see the | |
9178 | comment below. */ | |
5bd4f169 | 9179 | } |
58d180e8 AM |
9180 | else if (s == htab->glink_eh_frame) |
9181 | { | |
9182 | if (!bfd_is_abs_section (s->output_section)) | |
9183 | /* Not sized yet. */ | |
9184 | continue; | |
9185 | } | |
70cc837d | 9186 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 9187 | { |
c456f082 | 9188 | if (s->size != 0) |
5bd4f169 | 9189 | { |
4ce794b7 | 9190 | if (s != htab->relplt) |
b34976b6 | 9191 | relocs = TRUE; |
5bd4f169 AM |
9192 | |
9193 | /* We use the reloc_count field as a counter if we need | |
9194 | to copy relocs into the output file. */ | |
9195 | s->reloc_count = 0; | |
9196 | } | |
9197 | } | |
65f38f15 | 9198 | else |
5bd4f169 AM |
9199 | { |
9200 | /* It's not one of our sections, so don't allocate space. */ | |
9201 | continue; | |
9202 | } | |
9203 | ||
eea6121a | 9204 | if (s->size == 0) |
5bd4f169 | 9205 | { |
c456f082 AM |
9206 | /* If we don't need this section, strip it from the |
9207 | output file. This is mostly to handle .rela.bss and | |
9208 | .rela.plt. We must create both sections in | |
9209 | create_dynamic_sections, because they must be created | |
9210 | before the linker maps input sections to output | |
9211 | sections. The linker does that before | |
9212 | adjust_dynamic_symbol is called, and it is that | |
9213 | function which decides whether anything needs to go | |
9214 | into these sections. */ | |
8423293d | 9215 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
9216 | continue; |
9217 | } | |
9218 | ||
c456f082 | 9219 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
9220 | continue; |
9221 | ||
65f38f15 AM |
9222 | /* Allocate memory for the section contents. We use bfd_zalloc |
9223 | here in case unused entries are not reclaimed before the | |
9224 | section's contents are written out. This should not happen, | |
411e1bfb AM |
9225 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
9226 | sections instead of garbage. | |
9227 | We also rely on the section contents being zero when writing | |
9228 | the GOT. */ | |
eea6121a | 9229 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 9230 | if (s->contents == NULL) |
b34976b6 | 9231 | return FALSE; |
5bd4f169 AM |
9232 | } |
9233 | ||
e717da7e AM |
9234 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
9235 | { | |
0c8d6e5c | 9236 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
9237 | continue; |
9238 | ||
e717da7e AM |
9239 | s = ppc64_elf_tdata (ibfd)->got; |
9240 | if (s != NULL && s != htab->got) | |
9241 | { | |
eea6121a | 9242 | if (s->size == 0) |
8423293d | 9243 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9244 | else |
9245 | { | |
eea6121a | 9246 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9247 | if (s->contents == NULL) |
9248 | return FALSE; | |
9249 | } | |
9250 | } | |
9251 | s = ppc64_elf_tdata (ibfd)->relgot; | |
9252 | if (s != NULL) | |
9253 | { | |
eea6121a | 9254 | if (s->size == 0) |
8423293d | 9255 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
9256 | else |
9257 | { | |
eea6121a | 9258 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
9259 | if (s->contents == NULL) |
9260 | return FALSE; | |
9261 | relocs = TRUE; | |
9262 | s->reloc_count = 0; | |
9263 | } | |
9264 | } | |
9265 | } | |
9266 | ||
e86ce104 | 9267 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
9268 | { |
9269 | /* Add some entries to the .dynamic section. We fill in the | |
9270 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
9271 | must add the entries now so that we get the correct size for | |
9272 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
9273 | dynamic linker and used by the debugger. */ | |
dc810e39 | 9274 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 9275 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 9276 | |
36af4a4e | 9277 | if (info->executable) |
5bd4f169 | 9278 | { |
dc810e39 | 9279 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 9280 | return FALSE; |
5bd4f169 AM |
9281 | } |
9282 | ||
eea6121a | 9283 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 9284 | { |
dc810e39 AM |
9285 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
9286 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
9287 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
9288 | || !add_dynamic_entry (DT_JMPREL, 0) |
9289 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 9290 | return FALSE; |
5bd4f169 AM |
9291 | } |
9292 | ||
19397422 AM |
9293 | if (NO_OPD_RELOCS) |
9294 | { | |
9295 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
9296 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 9297 | return FALSE; |
19397422 AM |
9298 | } |
9299 | ||
a7f2871e AM |
9300 | if (!htab->no_tls_get_addr_opt |
9301 | && htab->tls_get_addr_fd != NULL | |
9302 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
9303 | && !add_dynamic_entry (DT_PPC64_TLSOPT, 0)) | |
9304 | return FALSE; | |
9305 | ||
5bd4f169 AM |
9306 | if (relocs) |
9307 | { | |
dc810e39 AM |
9308 | if (!add_dynamic_entry (DT_RELA, 0) |
9309 | || !add_dynamic_entry (DT_RELASZ, 0) | |
9310 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 9311 | return FALSE; |
5bd4f169 | 9312 | |
65f38f15 AM |
9313 | /* If any dynamic relocs apply to a read-only section, |
9314 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 9315 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 9316 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 9317 | |
65f38f15 | 9318 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 9319 | { |
65f38f15 | 9320 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 9321 | return FALSE; |
5bd4f169 | 9322 | } |
5bd4f169 | 9323 | } |
5bd4f169 | 9324 | } |
65f38f15 | 9325 | #undef add_dynamic_entry |
5bd4f169 | 9326 | |
b34976b6 | 9327 | return TRUE; |
5bd4f169 AM |
9328 | } |
9329 | ||
721956f4 | 9330 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 9331 | |
4ce794b7 AM |
9332 | static inline enum ppc_stub_type |
9333 | ppc_type_of_stub (asection *input_sec, | |
9334 | const Elf_Internal_Rela *rel, | |
9335 | struct ppc_link_hash_entry **hash, | |
e054468f | 9336 | struct plt_entry **plt_ent, |
4ce794b7 | 9337 | bfd_vma destination) |
5bd4f169 | 9338 | { |
721956f4 AM |
9339 | struct ppc_link_hash_entry *h = *hash; |
9340 | bfd_vma location; | |
9341 | bfd_vma branch_offset; | |
9342 | bfd_vma max_branch_offset; | |
4ce794b7 | 9343 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 9344 | |
721956f4 AM |
9345 | if (h != NULL) |
9346 | { | |
e054468f | 9347 | struct plt_entry *ent; |
7fe2b9a6 | 9348 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
9349 | if (h->oh != NULL |
9350 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
9351 | { |
9352 | fdh = ppc_follow_link (h->oh); | |
9353 | *hash = fdh; | |
9354 | } | |
8387904d | 9355 | |
e054468f AM |
9356 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
9357 | if (ent->addend == rel->r_addend | |
9358 | && ent->plt.offset != (bfd_vma) -1) | |
9359 | { | |
e054468f AM |
9360 | *plt_ent = ent; |
9361 | return ppc_stub_plt_call; | |
9362 | } | |
5bd4f169 | 9363 | |
7fe2b9a6 AM |
9364 | /* Here, we know we don't have a plt entry. If we don't have a |
9365 | either a defined function descriptor or a defined entry symbol | |
9366 | in a regular object file, then it is pointless trying to make | |
9367 | any other type of stub. */ | |
854b41e7 AM |
9368 | if (!is_static_defined (&fdh->elf) |
9369 | && !is_static_defined (&h->elf)) | |
721956f4 | 9370 | return ppc_stub_none; |
5d1634d7 | 9371 | } |
e054468f AM |
9372 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
9373 | { | |
9374 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
9375 | struct plt_entry **local_plt = (struct plt_entry **) | |
9376 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
9377 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
9378 | ||
9379 | if (local_plt[r_symndx] != NULL) | |
9380 | { | |
9381 | struct plt_entry *ent; | |
9382 | ||
9383 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
9384 | if (ent->addend == rel->r_addend | |
9385 | && ent->plt.offset != (bfd_vma) -1) | |
9386 | { | |
9387 | *plt_ent = ent; | |
9388 | return ppc_stub_plt_call; | |
9389 | } | |
9390 | } | |
9391 | } | |
5d1634d7 | 9392 | |
721956f4 AM |
9393 | /* Determine where the call point is. */ |
9394 | location = (input_sec->output_offset | |
9395 | + input_sec->output_section->vma | |
9396 | + rel->r_offset); | |
5d1634d7 | 9397 | |
721956f4 AM |
9398 | branch_offset = destination - location; |
9399 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 9400 | |
721956f4 AM |
9401 | /* Determine if a long branch stub is needed. */ |
9402 | max_branch_offset = 1 << 25; | |
4ce794b7 | 9403 | if (r_type != R_PPC64_REL24) |
721956f4 | 9404 | max_branch_offset = 1 << 15; |
5d1634d7 | 9405 | |
721956f4 AM |
9406 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
9407 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
9408 | is needed later. */ | |
9409 | return ppc_stub_long_branch; | |
5d1634d7 | 9410 | |
721956f4 | 9411 | return ppc_stub_none; |
5d1634d7 AM |
9412 | } |
9413 | ||
9414 | /* Build a .plt call stub. */ | |
9415 | ||
4ce794b7 | 9416 | static inline bfd_byte * |
9df0ef5f AM |
9417 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r, |
9418 | bfd_boolean plt_static_chain) | |
5d1634d7 AM |
9419 | { |
9420 | #define PPC_LO(v) ((v) & 0xffff) | |
9421 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9422 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
9423 | ||
ac2df442 AM |
9424 | if (PPC_HA (offset) != 0) |
9425 | { | |
176a0d42 AM |
9426 | if (r != NULL) |
9427 | { | |
3b421ab3 | 9428 | r[0].r_offset += 4; |
176a0d42 | 9429 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 9430 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
9431 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
9432 | r[1].r_addend = r[0].r_addend; | |
c7131b65 | 9433 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9434 | { |
9435 | r[2].r_offset = r[1].r_offset + 4; | |
9436 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
9437 | r[2].r_addend = r[0].r_addend; | |
9438 | } | |
9439 | else | |
9440 | { | |
9441 | r[2].r_offset = r[1].r_offset + 8; | |
9442 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9443 | r[2].r_addend = r[0].r_addend + 8; | |
c7131b65 AM |
9444 | if (plt_static_chain) |
9445 | { | |
9446 | r[3].r_offset = r[2].r_offset + 4; | |
9447 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9448 | r[3].r_addend = r[0].r_addend + 16; | |
9449 | } | |
176a0d42 AM |
9450 | } |
9451 | } | |
ac2df442 | 9452 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
3b421ab3 | 9453 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ac2df442 | 9454 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
9df0ef5f | 9455 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9456 | { |
9457 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
9458 | offset = 0; | |
9459 | } | |
9460 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9461 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
9df0ef5f AM |
9462 | if (plt_static_chain) |
9463 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 AM |
9464 | bfd_put_32 (obfd, BCTR, p), p += 4; |
9465 | } | |
9466 | else | |
9467 | { | |
176a0d42 AM |
9468 | if (r != NULL) |
9469 | { | |
9470 | r[0].r_offset += 4; | |
9471 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
c7131b65 | 9472 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
176a0d42 AM |
9473 | { |
9474 | r[1].r_offset = r[0].r_offset + 4; | |
9475 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
9476 | r[1].r_addend = r[0].r_addend; | |
9477 | } | |
9478 | else | |
9479 | { | |
9480 | r[1].r_offset = r[0].r_offset + 8; | |
9481 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
c7131b65 AM |
9482 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; |
9483 | if (plt_static_chain) | |
9484 | { | |
9485 | r[2].r_offset = r[1].r_offset + 4; | |
9486 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9487 | r[2].r_addend = r[0].r_addend + 8; | |
9488 | } | |
176a0d42 AM |
9489 | } |
9490 | } | |
ac2df442 AM |
9491 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
9492 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
9df0ef5f | 9493 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
ac2df442 AM |
9494 | { |
9495 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
9496 | offset = 0; | |
9497 | } | |
9498 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
9df0ef5f AM |
9499 | if (plt_static_chain) |
9500 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
ac2df442 AM |
9501 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; |
9502 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
9503 | } | |
5d1634d7 AM |
9504 | return p; |
9505 | } | |
9506 | ||
a7f2871e AM |
9507 | /* Build a special .plt call stub for __tls_get_addr. */ |
9508 | ||
9509 | #define LD_R11_0R3 0xe9630000 | |
9510 | #define LD_R12_0R3 0xe9830000 | |
9511 | #define MR_R0_R3 0x7c601b78 | |
9512 | #define CMPDI_R11_0 0x2c2b0000 | |
9513 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
9514 | #define BEQLR 0x4d820020 | |
9515 | #define MR_R3_R0 0x7c030378 | |
9516 | #define MFLR_R11 0x7d6802a6 | |
9517 | #define STD_R11_0R1 0xf9610000 | |
9518 | #define BCTRL 0x4e800421 | |
9519 | #define LD_R11_0R1 0xe9610000 | |
9520 | #define LD_R2_0R1 0xe8410000 | |
9521 | #define MTLR_R11 0x7d6803a6 | |
9522 | ||
9523 | static inline bfd_byte * | |
9524 | build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset, | |
9df0ef5f | 9525 | Elf_Internal_Rela *r, bfd_boolean plt_static_chain) |
a7f2871e AM |
9526 | { |
9527 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; | |
9528 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
9529 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
9530 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
9531 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
9532 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
9533 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9534 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
9535 | bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4; | |
9536 | ||
9537 | if (r != NULL) | |
9538 | r[0].r_offset += 9 * 4; | |
9df0ef5f | 9539 | p = build_plt_stub (obfd, p, offset, r, plt_static_chain); |
a7f2871e AM |
9540 | bfd_put_32 (obfd, BCTRL, p - 4); |
9541 | ||
9542 | bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4; | |
9543 | bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4; | |
9544 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; | |
9545 | bfd_put_32 (obfd, BLR, p), p += 4; | |
9546 | ||
9547 | return p; | |
9548 | } | |
9549 | ||
176a0d42 AM |
9550 | static Elf_Internal_Rela * |
9551 | get_relocs (asection *sec, int count) | |
9552 | { | |
9553 | Elf_Internal_Rela *relocs; | |
9554 | struct bfd_elf_section_data *elfsec_data; | |
9555 | ||
9556 | elfsec_data = elf_section_data (sec); | |
9557 | relocs = elfsec_data->relocs; | |
9558 | if (relocs == NULL) | |
9559 | { | |
9560 | bfd_size_type relsize; | |
9561 | relsize = sec->reloc_count * sizeof (*relocs); | |
9562 | relocs = bfd_alloc (sec->owner, relsize); | |
9563 | if (relocs == NULL) | |
9564 | return NULL; | |
9565 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
9566 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
9567 | sizeof (Elf_Internal_Shdr)); | |
9568 | if (elfsec_data->rela.hdr == NULL) | |
9569 | return NULL; | |
9570 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
9571 | * sizeof (Elf64_External_Rela)); | |
9572 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
9573 | sec->reloc_count = 0; |
9574 | } | |
9575 | relocs += sec->reloc_count; | |
9576 | sec->reloc_count += count; | |
9577 | return relocs; | |
9578 | } | |
9579 | ||
aa374f67 | 9580 | static bfd_vma |
25f53a85 | 9581 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
9582 | struct ppc_stub_hash_entry *stub_entry) |
9583 | { | |
25f53a85 | 9584 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
aa374f67 AM |
9585 | bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off; |
9586 | ||
9587 | if (r2off == 0) | |
9588 | { | |
9589 | /* Support linking -R objects. Get the toc pointer from the | |
9590 | opd entry. */ | |
9591 | char buf[8]; | |
9592 | asection *opd = stub_entry->h->elf.root.u.def.section; | |
9593 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
9594 | ||
9595 | if (strcmp (opd->name, ".opd") != 0 | |
9596 | || opd->reloc_count != 0) | |
9597 | { | |
8de848d8 | 9598 | info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"), |
25f53a85 | 9599 | stub_entry->h->elf.root.root.string); |
aa374f67 AM |
9600 | bfd_set_error (bfd_error_bad_value); |
9601 | return 0; | |
9602 | } | |
9603 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
9604 | return 0; | |
9605 | r2off = bfd_get_64 (opd->owner, buf); | |
25f53a85 | 9606 | r2off -= elf_gp (info->output_bfd); |
aa374f67 AM |
9607 | } |
9608 | r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off; | |
9609 | return r2off; | |
9610 | } | |
9611 | ||
b34976b6 | 9612 | static bfd_boolean |
4ce794b7 | 9613 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 9614 | { |
721956f4 AM |
9615 | struct ppc_stub_hash_entry *stub_entry; |
9616 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
9617 | struct bfd_link_info *info; |
9618 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
9619 | bfd_byte *loc; |
9620 | bfd_byte *p; | |
ee75fd95 | 9621 | bfd_vma dest, off; |
721956f4 | 9622 | int size; |
176a0d42 | 9623 | Elf_Internal_Rela *r; |
e054468f | 9624 | asection *plt; |
5d1634d7 | 9625 | |
721956f4 AM |
9626 | /* Massage our args to the form they really have. */ |
9627 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 9628 | info = in_arg; |
5d1634d7 | 9629 | |
5d1634d7 | 9630 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
9631 | if (htab == NULL) |
9632 | return FALSE; | |
5d1634d7 | 9633 | |
721956f4 | 9634 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 9635 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 9636 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 9637 | |
4ce794b7 | 9638 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 9639 | switch (stub_entry->stub_type) |
5d1634d7 | 9640 | { |
721956f4 | 9641 | case ppc_stub_long_branch: |
ad8e1ba5 | 9642 | case ppc_stub_long_branch_r2off: |
721956f4 | 9643 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
9644 | off = dest = (stub_entry->target_value |
9645 | + stub_entry->target_section->output_offset | |
9646 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 9647 | |
721956f4 AM |
9648 | /* And this is where we are coming from. */ |
9649 | off -= (stub_entry->stub_offset | |
97b639ba AM |
9650 | + stub_entry->stub_sec->output_offset |
9651 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 9652 | |
ac2df442 AM |
9653 | size = 4; |
9654 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
ad8e1ba5 | 9655 | { |
25f53a85 | 9656 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 9657 | |
aa374f67 AM |
9658 | if (r2off == 0) |
9659 | { | |
9660 | htab->stub_error = TRUE; | |
9661 | return FALSE; | |
9662 | } | |
97b639ba | 9663 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9664 | loc += 4; |
ac2df442 AM |
9665 | size = 12; |
9666 | if (PPC_HA (r2off) != 0) | |
9667 | { | |
9668 | size = 16; | |
9669 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9670 | loc += 4; | |
9671 | } | |
97b639ba | 9672 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 | 9673 | loc += 4; |
ac2df442 | 9674 | off -= size - 4; |
ad8e1ba5 | 9675 | } |
97b639ba | 9676 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 9677 | |
5c3dead3 AM |
9678 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
9679 | { | |
8de848d8 | 9680 | info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"), |
25f53a85 | 9681 | stub_entry->root.string); |
5c3dead3 AM |
9682 | htab->stub_error = TRUE; |
9683 | return FALSE; | |
9684 | } | |
ee75fd95 AM |
9685 | |
9686 | if (info->emitrelocations) | |
9687 | { | |
176a0d42 AM |
9688 | r = get_relocs (stub_entry->stub_sec, 1); |
9689 | if (r == NULL) | |
9690 | return FALSE; | |
ee75fd95 AM |
9691 | r->r_offset = loc - stub_entry->stub_sec->contents; |
9692 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
9693 | r->r_addend = dest; | |
9694 | if (stub_entry->h != NULL) | |
9695 | { | |
9696 | struct elf_link_hash_entry **hashes; | |
9697 | unsigned long symndx; | |
9698 | struct ppc_link_hash_entry *h; | |
9699 | ||
9700 | hashes = elf_sym_hashes (htab->stub_bfd); | |
9701 | if (hashes == NULL) | |
9702 | { | |
9703 | bfd_size_type hsize; | |
9704 | ||
9705 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
9706 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
9707 | if (hashes == NULL) | |
9708 | return FALSE; | |
9709 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
9710 | htab->stub_globals = 1; | |
9711 | } | |
9712 | symndx = htab->stub_globals++; | |
9713 | h = stub_entry->h; | |
9714 | hashes[symndx] = &h->elf; | |
9715 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
9716 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 9717 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
9718 | if (h->elf.root.u.def.section != stub_entry->target_section) |
9719 | /* H is an opd symbol. The addend must be zero. */ | |
9720 | r->r_addend = 0; | |
9721 | else | |
9722 | { | |
9723 | off = (h->elf.root.u.def.value | |
9724 | + h->elf.root.u.def.section->output_offset | |
9725 | + h->elf.root.u.def.section->output_section->vma); | |
9726 | r->r_addend -= off; | |
9727 | } | |
9728 | } | |
9729 | } | |
721956f4 | 9730 | break; |
e86ce104 | 9731 | |
721956f4 | 9732 | case ppc_stub_plt_branch: |
ad8e1ba5 | 9733 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
9734 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
9735 | stub_entry->root.string + 9, | |
b34976b6 | 9736 | FALSE, FALSE); |
721956f4 AM |
9737 | if (br_entry == NULL) |
9738 | { | |
8de848d8 | 9739 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
25f53a85 | 9740 | stub_entry->root.string); |
b34976b6 AM |
9741 | htab->stub_error = TRUE; |
9742 | return FALSE; | |
721956f4 AM |
9743 | } |
9744 | ||
176a0d42 AM |
9745 | dest = (stub_entry->target_value |
9746 | + stub_entry->target_section->output_offset | |
9747 | + stub_entry->target_section->output_section->vma); | |
721956f4 | 9748 | |
176a0d42 | 9749 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 9750 | htab->brlt->contents + br_entry->offset); |
721956f4 | 9751 | |
f94498ff | 9752 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 9753 | { |
f94498ff | 9754 | br_entry->iter = 0; |
84f5d08e | 9755 | |
f94498ff | 9756 | if (htab->relbrlt != NULL) |
84f5d08e | 9757 | { |
f94498ff AM |
9758 | /* Create a reloc for the branch lookup table entry. */ |
9759 | Elf_Internal_Rela rela; | |
9760 | bfd_byte *rl; | |
9761 | ||
9762 | rela.r_offset = (br_entry->offset | |
9763 | + htab->brlt->output_offset | |
9764 | + htab->brlt->output_section->vma); | |
9765 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9766 | rela.r_addend = dest; |
f94498ff AM |
9767 | |
9768 | rl = htab->relbrlt->contents; | |
9769 | rl += (htab->relbrlt->reloc_count++ | |
9770 | * sizeof (Elf64_External_Rela)); | |
9771 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
9772 | } | |
9773 | else if (info->emitrelocations) | |
9774 | { | |
176a0d42 AM |
9775 | r = get_relocs (htab->brlt, 1); |
9776 | if (r == NULL) | |
9777 | return FALSE; | |
9778 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
9779 | normal reloc processing. Symbols and offsets are not | |
9780 | translated from input file to output file form, so | |
9781 | set up the offset per the output file. */ | |
f94498ff AM |
9782 | r->r_offset = (br_entry->offset |
9783 | + htab->brlt->output_offset | |
9784 | + htab->brlt->output_section->vma); | |
9785 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 9786 | r->r_addend = dest; |
84f5d08e | 9787 | } |
84f5d08e | 9788 | } |
721956f4 | 9789 | |
176a0d42 AM |
9790 | dest = (br_entry->offset |
9791 | + htab->brlt->output_offset | |
9792 | + htab->brlt->output_section->vma); | |
9793 | ||
9794 | off = (dest | |
4ce794b7 | 9795 | - elf_gp (htab->brlt->output_section->owner) |
ad8e1ba5 | 9796 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9797 | |
ad8e1ba5 | 9798 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 9799 | { |
25f53a85 | 9800 | info->callbacks->einfo |
8de848d8 | 9801 | (_("%P: linkage table error against `%s'\n"), |
721956f4 | 9802 | stub_entry->root.string); |
5d1634d7 | 9803 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9804 | htab->stub_error = TRUE; |
9805 | return FALSE; | |
5d1634d7 | 9806 | } |
41bd81ab | 9807 | |
176a0d42 AM |
9808 | if (info->emitrelocations) |
9809 | { | |
9810 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
9811 | if (r == NULL) | |
9812 | return FALSE; | |
9813 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9814 | if (bfd_big_endian (info->output_bfd)) |
9815 | r[0].r_offset += 2; | |
176a0d42 AM |
9816 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
9817 | r[0].r_offset += 4; | |
9818 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
9819 | r[0].r_addend = dest; | |
9820 | if (PPC_HA (off) != 0) | |
9821 | { | |
9822 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
9823 | r[1].r_offset = r[0].r_offset + 4; | |
9824 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
9825 | r[1].r_addend = r[0].r_addend; | |
9826 | } | |
9827 | } | |
9828 | ||
ad8e1ba5 AM |
9829 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
9830 | { | |
176a0d42 | 9831 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9832 | { |
9833 | size = 16; | |
176a0d42 | 9834 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9835 | loc += 4; |
176a0d42 | 9836 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9837 | } |
9838 | else | |
9839 | { | |
9840 | size = 12; | |
176a0d42 | 9841 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 | 9842 | } |
ad8e1ba5 AM |
9843 | } |
9844 | else | |
9845 | { | |
25f53a85 | 9846 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
9847 | |
9848 | if (r2off == 0) | |
9849 | { | |
9850 | htab->stub_error = TRUE; | |
9851 | return FALSE; | |
9852 | } | |
ad8e1ba5 | 9853 | |
97b639ba | 9854 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 9855 | loc += 4; |
ac2df442 | 9856 | size = 20; |
176a0d42 | 9857 | if (PPC_HA (off) != 0) |
ac2df442 AM |
9858 | { |
9859 | size += 4; | |
176a0d42 | 9860 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
ac2df442 | 9861 | loc += 4; |
176a0d42 | 9862 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
ac2df442 AM |
9863 | loc += 4; |
9864 | } | |
9865 | else | |
9866 | { | |
176a0d42 | 9867 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
ac2df442 AM |
9868 | loc += 4; |
9869 | } | |
9870 | ||
9871 | if (PPC_HA (r2off) != 0) | |
9872 | { | |
9873 | size += 4; | |
9874 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
9875 | loc += 4; | |
9876 | } | |
97b639ba | 9877 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
9878 | } |
9879 | loc += 4; | |
97b639ba | 9880 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 9881 | loc += 4; |
97b639ba | 9882 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 9883 | break; |
5d1634d7 | 9884 | |
721956f4 | 9885 | case ppc_stub_plt_call: |
e054468f | 9886 | if (stub_entry->h != NULL |
b31867b6 AM |
9887 | && stub_entry->h->is_func_descriptor |
9888 | && stub_entry->h->oh != NULL) | |
c862ae31 | 9889 | { |
b31867b6 AM |
9890 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
9891 | ||
9892 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
9893 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. | |
9894 | FIXME: We used to define the symbol on one of the call | |
9895 | stubs instead, which is why we test symbol section id | |
9896 | against htab->top_id in various places. Likely all | |
9897 | these checks could now disappear. */ | |
9898 | if (fh->elf.root.type == bfd_link_hash_undefined) | |
9899 | fh->elf.root.type = bfd_link_hash_undefweak; | |
9507a174 AM |
9900 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
9901 | fh->was_undefined = 0; | |
c862ae31 AM |
9902 | } |
9903 | ||
721956f4 | 9904 | /* Now build the stub. */ |
e054468f | 9905 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 9906 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
9907 | abort (); |
9908 | ||
e054468f | 9909 | plt = htab->plt; |
25f23106 AM |
9910 | if (!htab->elf.dynamic_sections_created |
9911 | || stub_entry->h == NULL | |
9912 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
9913 | plt = htab->iplt; |
9914 | ||
9915 | dest += plt->output_offset + plt->output_section->vma; | |
9916 | ||
9917 | if (stub_entry->h == NULL | |
9918 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
9919 | { | |
9920 | Elf_Internal_Rela rela; | |
9921 | bfd_byte *rl; | |
9922 | ||
9923 | rela.r_offset = dest; | |
25f23106 | 9924 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); |
e054468f AM |
9925 | rela.r_addend = (stub_entry->target_value |
9926 | + stub_entry->target_section->output_offset | |
9927 | + stub_entry->target_section->output_section->vma); | |
9928 | ||
25f23106 AM |
9929 | rl = (htab->reliplt->contents |
9930 | + (htab->reliplt->reloc_count++ | |
9931 | * sizeof (Elf64_External_Rela))); | |
9932 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
e054468f AM |
9933 | stub_entry->plt_ent->plt.offset |= 1; |
9934 | } | |
176a0d42 AM |
9935 | |
9936 | off = (dest | |
e054468f | 9937 | - elf_gp (plt->output_section->owner) |
176a0d42 | 9938 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 9939 | |
ad8e1ba5 | 9940 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 9941 | { |
25f53a85 | 9942 | info->callbacks->einfo |
8de848d8 | 9943 | (_("%P: linkage table error against `%s'\n"), |
e054468f AM |
9944 | stub_entry->h != NULL |
9945 | ? stub_entry->h->elf.root.root.string | |
9946 | : "<local sym>"); | |
721956f4 | 9947 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
9948 | htab->stub_error = TRUE; |
9949 | return FALSE; | |
721956f4 AM |
9950 | } |
9951 | ||
176a0d42 AM |
9952 | r = NULL; |
9953 | if (info->emitrelocations) | |
9954 | { | |
9955 | r = get_relocs (stub_entry->stub_sec, | |
c7131b65 AM |
9956 | (2 |
9957 | + (PPC_HA (off) != 0) | |
9958 | + (htab->plt_static_chain | |
9959 | && PPC_HA (off + 16) == PPC_HA (off)))); | |
176a0d42 AM |
9960 | if (r == NULL) |
9961 | return FALSE; | |
9962 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
7cfbafbc AM |
9963 | if (bfd_big_endian (info->output_bfd)) |
9964 | r[0].r_offset += 2; | |
176a0d42 AM |
9965 | r[0].r_addend = dest; |
9966 | } | |
a7f2871e AM |
9967 | if (stub_entry->h != NULL |
9968 | && (stub_entry->h == htab->tls_get_addr_fd | |
9969 | || stub_entry->h == htab->tls_get_addr) | |
9970 | && !htab->no_tls_get_addr_opt) | |
9df0ef5f AM |
9971 | p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r, |
9972 | htab->plt_static_chain); | |
a7f2871e | 9973 | else |
9df0ef5f AM |
9974 | p = build_plt_stub (htab->stub_bfd, loc, off, r, |
9975 | htab->plt_static_chain); | |
721956f4 AM |
9976 | size = p - loc; |
9977 | break; | |
9978 | ||
9979 | default: | |
9980 | BFD_FAIL (); | |
b34976b6 | 9981 | return FALSE; |
721956f4 AM |
9982 | } |
9983 | ||
eea6121a | 9984 | stub_entry->stub_sec->size += size; |
97b639ba | 9985 | |
ee75fd95 | 9986 | if (htab->emit_stub_syms) |
97b639ba AM |
9987 | { |
9988 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
9989 | size_t len1, len2; |
9990 | char *name; | |
9991 | const char *const stub_str[] = { "long_branch", | |
9992 | "long_branch_r2off", | |
9993 | "plt_branch", | |
9994 | "plt_branch_r2off", | |
9995 | "plt_call" }; | |
9996 | ||
9997 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
9998 | len2 = strlen (stub_entry->root.string); | |
9999 | name = bfd_malloc (len1 + len2 + 2); | |
10000 | if (name == NULL) | |
10001 | return FALSE; | |
10002 | memcpy (name, stub_entry->root.string, 9); | |
10003 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
10004 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
10005 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
10006 | if (h == NULL) |
10007 | return FALSE; | |
10008 | if (h->root.type == bfd_link_hash_new) | |
10009 | { | |
10010 | h->root.type = bfd_link_hash_defined; | |
10011 | h->root.u.def.section = stub_entry->stub_sec; | |
10012 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
10013 | h->ref_regular = 1; |
10014 | h->def_regular = 1; | |
10015 | h->ref_regular_nonweak = 1; | |
10016 | h->forced_local = 1; | |
10017 | h->non_elf = 0; | |
97b639ba AM |
10018 | } |
10019 | } | |
10020 | ||
b34976b6 | 10021 | return TRUE; |
721956f4 AM |
10022 | } |
10023 | ||
10024 | /* As above, but don't actually build the stub. Just bump offset so | |
10025 | we know stub section sizes, and select plt_branch stubs where | |
10026 | long_branch stubs won't do. */ | |
10027 | ||
b34976b6 | 10028 | static bfd_boolean |
4ce794b7 | 10029 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
10030 | { |
10031 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 10032 | struct bfd_link_info *info; |
721956f4 AM |
10033 | struct ppc_link_hash_table *htab; |
10034 | bfd_vma off; | |
10035 | int size; | |
10036 | ||
10037 | /* Massage our args to the form they really have. */ | |
10038 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
10039 | info = in_arg; |
10040 | ||
10041 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10042 | if (htab == NULL) |
10043 | return FALSE; | |
721956f4 AM |
10044 | |
10045 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
10046 | { | |
e054468f AM |
10047 | asection *plt; |
10048 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 10049 | if (off >= (bfd_vma) -2) |
411e1bfb | 10050 | abort (); |
e054468f | 10051 | plt = htab->plt; |
25f23106 AM |
10052 | if (!htab->elf.dynamic_sections_created |
10053 | || stub_entry->h == NULL | |
10054 | || stub_entry->h->elf.dynindx == -1) | |
e054468f AM |
10055 | plt = htab->iplt; |
10056 | off += (plt->output_offset | |
10057 | + plt->output_section->vma | |
10058 | - elf_gp (plt->output_section->owner) | |
ad8e1ba5 | 10059 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 10060 | |
ad8e1ba5 | 10061 | size = PLT_CALL_STUB_SIZE; |
9df0ef5f AM |
10062 | if (!htab->plt_static_chain) |
10063 | size -= 4; | |
ac2df442 AM |
10064 | if (PPC_HA (off) == 0) |
10065 | size -= 4; | |
c7131b65 | 10066 | if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off)) |
721956f4 | 10067 | size += 4; |
a7f2871e AM |
10068 | if (stub_entry->h != NULL |
10069 | && (stub_entry->h == htab->tls_get_addr_fd | |
10070 | || stub_entry->h == htab->tls_get_addr) | |
10071 | && !htab->no_tls_get_addr_opt) | |
10072 | size += 13 * 4; | |
176a0d42 AM |
10073 | if (info->emitrelocations) |
10074 | { | |
10075 | stub_entry->stub_sec->reloc_count | |
c7131b65 AM |
10076 | += (2 |
10077 | + (PPC_HA (off) != 0) | |
10078 | + (htab->plt_static_chain | |
10079 | && PPC_HA (off + 16) == PPC_HA (off))); | |
176a0d42 AM |
10080 | stub_entry->stub_sec->flags |= SEC_RELOC; |
10081 | } | |
721956f4 AM |
10082 | } |
10083 | else | |
10084 | { | |
ad8e1ba5 AM |
10085 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
10086 | variants. */ | |
ac2df442 AM |
10087 | bfd_vma r2off = 0; |
10088 | ||
721956f4 AM |
10089 | off = (stub_entry->target_value |
10090 | + stub_entry->target_section->output_offset | |
10091 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 10092 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
10093 | + stub_entry->stub_sec->output_offset |
10094 | + stub_entry->stub_sec->output_section->vma); | |
10095 | ||
ad8e1ba5 AM |
10096 | /* Reset the stub type from the plt variant in case we now |
10097 | can reach with a shorter stub. */ | |
10098 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
10099 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
10100 | ||
10101 | size = 4; | |
10102 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
10103 | { | |
25f53a85 | 10104 | r2off = get_r2off (info, stub_entry); |
aa374f67 AM |
10105 | if (r2off == 0) |
10106 | { | |
10107 | htab->stub_error = TRUE; | |
10108 | return FALSE; | |
10109 | } | |
ac2df442 AM |
10110 | size = 12; |
10111 | if (PPC_HA (r2off) != 0) | |
10112 | size = 16; | |
10113 | off -= size - 4; | |
ad8e1ba5 AM |
10114 | } |
10115 | ||
10116 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
10117 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
10118 | { | |
10119 | struct ppc_branch_hash_entry *br_entry; | |
10120 | ||
10121 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
10122 | stub_entry->root.string + 9, | |
b34976b6 | 10123 | TRUE, FALSE); |
721956f4 AM |
10124 | if (br_entry == NULL) |
10125 | { | |
8de848d8 | 10126 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
25f53a85 | 10127 | stub_entry->root.string); |
b34976b6 AM |
10128 | htab->stub_error = TRUE; |
10129 | return FALSE; | |
721956f4 AM |
10130 | } |
10131 | ||
10132 | if (br_entry->iter != htab->stub_iteration) | |
10133 | { | |
10134 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
10135 | br_entry->offset = htab->brlt->size; |
10136 | htab->brlt->size += 8; | |
63bc6f6c | 10137 | |
ee75fd95 | 10138 | if (htab->relbrlt != NULL) |
eea6121a | 10139 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
10140 | else if (info->emitrelocations) |
10141 | { | |
10142 | htab->brlt->reloc_count += 1; | |
10143 | htab->brlt->flags |= SEC_RELOC; | |
10144 | } | |
721956f4 | 10145 | } |
ad8e1ba5 AM |
10146 | |
10147 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
10148 | off = (br_entry->offset |
10149 | + htab->brlt->output_offset | |
10150 | + htab->brlt->output_section->vma | |
10151 | - elf_gp (htab->brlt->output_section->owner) | |
10152 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
10153 | ||
176a0d42 AM |
10154 | if (info->emitrelocations) |
10155 | { | |
10156 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
10157 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10158 | } | |
10159 | ||
ac2df442 AM |
10160 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
10161 | { | |
10162 | size = 12; | |
176a0d42 | 10163 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10164 | size = 16; |
10165 | } | |
10166 | else | |
10167 | { | |
10168 | size = 20; | |
176a0d42 | 10169 | if (PPC_HA (off) != 0) |
ac2df442 AM |
10170 | size += 4; |
10171 | ||
10172 | if (PPC_HA (r2off) != 0) | |
10173 | size += 4; | |
10174 | } | |
721956f4 | 10175 | } |
84f5d08e AM |
10176 | else if (info->emitrelocations) |
10177 | { | |
10178 | stub_entry->stub_sec->reloc_count += 1; | |
10179 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
10180 | } | |
721956f4 AM |
10181 | } |
10182 | ||
eea6121a | 10183 | stub_entry->stub_sec->size += size; |
b34976b6 | 10184 | return TRUE; |
721956f4 AM |
10185 | } |
10186 | ||
10187 | /* Set up various things so that we can make a list of input sections | |
10188 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 10189 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
10190 | |
10191 | int | |
927be08e AM |
10192 | ppc64_elf_setup_section_lists |
10193 | (struct bfd_link_info *info, | |
10194 | asection *(*add_stub_section) (const char *, asection *), | |
10195 | void (*layout_sections_again) (void)) | |
721956f4 AM |
10196 | { |
10197 | bfd *input_bfd; | |
734b6cf9 | 10198 | int top_id, top_index, id; |
721956f4 | 10199 | asection *section; |
734b6cf9 | 10200 | asection **input_list; |
721956f4 AM |
10201 | bfd_size_type amt; |
10202 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10203 | ||
4dfe6ac6 NC |
10204 | if (htab == NULL) |
10205 | return -1; | |
927be08e AM |
10206 | /* Stash our params away. */ |
10207 | htab->add_stub_section = add_stub_section; | |
10208 | htab->layout_sections_again = layout_sections_again; | |
4c52953f | 10209 | |
4ce794b7 | 10210 | if (htab->brlt == NULL) |
721956f4 AM |
10211 | return 0; |
10212 | ||
1e2f5b6e | 10213 | /* Find the top input section id. */ |
3d6f9012 | 10214 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
10215 | input_bfd != NULL; |
10216 | input_bfd = input_bfd->link_next) | |
10217 | { | |
721956f4 AM |
10218 | for (section = input_bfd->sections; |
10219 | section != NULL; | |
10220 | section = section->next) | |
10221 | { | |
10222 | if (top_id < section->id) | |
10223 | top_id = section->id; | |
10224 | } | |
10225 | } | |
721956f4 | 10226 | |
8f3bab57 | 10227 | htab->top_id = top_id; |
721956f4 | 10228 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 10229 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
10230 | if (htab->stub_group == NULL) |
10231 | return -1; | |
10232 | ||
3d6f9012 AM |
10233 | /* Set toc_off for com, und, abs and ind sections. */ |
10234 | for (id = 0; id < 3; id++) | |
10235 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 10236 | |
734b6cf9 AM |
10237 | /* We can't use output_bfd->section_count here to find the top output |
10238 | section index as some sections may have been removed, and | |
8423293d | 10239 | strip_excluded_output_sections doesn't renumber the indices. */ |
927be08e | 10240 | for (section = info->output_bfd->sections, top_index = 0; |
734b6cf9 AM |
10241 | section != NULL; |
10242 | section = section->next) | |
10243 | { | |
10244 | if (top_index < section->index) | |
10245 | top_index = section->index; | |
10246 | } | |
10247 | ||
10248 | htab->top_index = top_index; | |
10249 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 10250 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
10251 | htab->input_list = input_list; |
10252 | if (input_list == NULL) | |
10253 | return -1; | |
10254 | ||
721956f4 AM |
10255 | return 1; |
10256 | } | |
10257 | ||
927be08e AM |
10258 | /* Set up for first pass at multitoc partitioning. */ |
10259 | ||
10260 | void | |
10261 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
10262 | { | |
10263 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10264 | ||
10265 | elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd); | |
10266 | htab->toc_curr = elf_gp (info->output_bfd); | |
10267 | htab->toc_bfd = NULL; | |
10268 | htab->toc_first_sec = NULL; | |
10269 | } | |
10270 | ||
e717da7e AM |
10271 | /* The linker repeatedly calls this function for each TOC input section |
10272 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 10273 | within a group is less than 64k in size. */ |
ad8e1ba5 | 10274 | |
927be08e | 10275 | bfd_boolean |
4ce794b7 | 10276 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
10277 | { |
10278 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 10279 | bfd_vma addr, off, limit; |
ad8e1ba5 | 10280 | |
4dfe6ac6 NC |
10281 | if (htab == NULL) |
10282 | return FALSE; | |
10283 | ||
927be08e | 10284 | if (!htab->second_toc_pass) |
4c52953f | 10285 | { |
927be08e | 10286 | /* Keep track of the first .toc or .got section for this input bfd. */ |
bf102f86 AM |
10287 | if (htab->toc_bfd != isec->owner) |
10288 | { | |
10289 | htab->toc_bfd = isec->owner; | |
10290 | htab->toc_first_sec = isec; | |
10291 | } | |
927be08e | 10292 | |
bf102f86 AM |
10293 | addr = isec->output_offset + isec->output_section->vma; |
10294 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
10295 | limit = 0x80008000; |
10296 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
10297 | limit = 0x10000; | |
10298 | if (off + isec->size > limit) | |
bf102f86 AM |
10299 | { |
10300 | addr = (htab->toc_first_sec->output_offset | |
10301 | + htab->toc_first_sec->output_section->vma); | |
10302 | htab->toc_curr = addr; | |
10303 | } | |
99877b66 | 10304 | |
927be08e AM |
10305 | /* toc_curr is the base address of this toc group. Set elf_gp |
10306 | for the input section to be the offset relative to the | |
10307 | output toc base plus 0x8000. Making the input elf_gp an | |
10308 | offset allows us to move the toc as a whole without | |
10309 | recalculating input elf_gp. */ | |
10310 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
10311 | off += TOC_BASE_OFF; | |
10312 | ||
10313 | /* Die if someone uses a linker script that doesn't keep input | |
10314 | file .toc and .got together. */ | |
10315 | if (elf_gp (isec->owner) != 0 | |
10316 | && elf_gp (isec->owner) != off) | |
10317 | return FALSE; | |
10318 | ||
10319 | elf_gp (isec->owner) = off; | |
10320 | return TRUE; | |
4c52953f | 10321 | } |
927be08e AM |
10322 | |
10323 | /* During the second pass toc_first_sec points to the start of | |
10324 | a toc group, and toc_curr is used to track the old elf_gp. | |
10325 | We use toc_bfd to ensure we only look at each bfd once. */ | |
10326 | if (htab->toc_bfd == isec->owner) | |
10327 | return TRUE; | |
10328 | htab->toc_bfd = isec->owner; | |
10329 | ||
10330 | if (htab->toc_first_sec == NULL | |
10331 | || htab->toc_curr != elf_gp (isec->owner)) | |
10332 | { | |
10333 | htab->toc_curr = elf_gp (isec->owner); | |
10334 | htab->toc_first_sec = isec; | |
10335 | } | |
10336 | addr = (htab->toc_first_sec->output_offset | |
10337 | + htab->toc_first_sec->output_section->vma); | |
10338 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
10339 | elf_gp (isec->owner) = off; | |
10340 | ||
10341 | return TRUE; | |
ad8e1ba5 AM |
10342 | } |
10343 | ||
927be08e AM |
10344 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
10345 | symbol H. */ | |
10346 | ||
10347 | static bfd_boolean | |
10348 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
10349 | { | |
10350 | if (h->root.type == bfd_link_hash_indirect) | |
10351 | return TRUE; | |
10352 | ||
927be08e AM |
10353 | merge_got_entries (&h->got.glist); |
10354 | ||
10355 | return TRUE; | |
10356 | } | |
10357 | ||
10358 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
10359 | symbol H. */ | |
10360 | ||
10361 | static bfd_boolean | |
10362 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
10363 | { | |
10364 | struct got_entry *gent; | |
10365 | ||
10366 | if (h->root.type == bfd_link_hash_indirect) | |
10367 | return TRUE; | |
10368 | ||
927be08e AM |
10369 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
10370 | if (!gent->is_indirect) | |
10371 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
10372 | return TRUE; | |
10373 | } | |
10374 | ||
10375 | /* Called on the first multitoc pass after the last call to | |
10376 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
10377 | entries. */ | |
10378 | ||
10379 | bfd_boolean | |
10380 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
10381 | { |
10382 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
10383 | struct bfd *ibfd, *ibfd2; |
10384 | bfd_boolean done_something; | |
10385 | ||
10386 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 10387 | |
7865406b AM |
10388 | if (!htab->do_multi_toc) |
10389 | return FALSE; | |
10390 | ||
d0fae19d | 10391 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
10392 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
10393 | ||
10394 | /* And tlsld_got. */ | |
10395 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10396 | { | |
10397 | struct got_entry *ent, *ent2; | |
10398 | ||
10399 | if (!is_ppc64_elf (ibfd)) | |
10400 | continue; | |
10401 | ||
10402 | ent = ppc64_tlsld_got (ibfd); | |
10403 | if (!ent->is_indirect | |
10404 | && ent->got.offset != (bfd_vma) -1) | |
10405 | { | |
10406 | for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next) | |
10407 | { | |
10408 | if (!is_ppc64_elf (ibfd2)) | |
10409 | continue; | |
10410 | ||
10411 | ent2 = ppc64_tlsld_got (ibfd2); | |
10412 | if (!ent2->is_indirect | |
10413 | && ent2->got.offset != (bfd_vma) -1 | |
10414 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
10415 | { | |
10416 | ent2->is_indirect = TRUE; | |
10417 | ent2->got.ent = ent; | |
10418 | } | |
10419 | } | |
10420 | } | |
10421 | } | |
10422 | ||
10423 | /* Zap sizes of got sections. */ | |
10424 | htab->reliplt->rawsize = htab->reliplt->size; | |
10425 | htab->reliplt->size -= htab->got_reli_size; | |
10426 | htab->got_reli_size = 0; | |
10427 | ||
10428 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10429 | { | |
10430 | asection *got, *relgot; | |
10431 | ||
10432 | if (!is_ppc64_elf (ibfd)) | |
10433 | continue; | |
10434 | ||
10435 | got = ppc64_elf_tdata (ibfd)->got; | |
10436 | if (got != NULL) | |
10437 | { | |
10438 | got->rawsize = got->size; | |
10439 | got->size = 0; | |
10440 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
10441 | relgot->rawsize = relgot->size; | |
10442 | relgot->size = 0; | |
10443 | } | |
10444 | } | |
10445 | ||
10446 | /* Now reallocate the got, local syms first. We don't need to | |
10447 | allocate section contents again since we never increase size. */ | |
10448 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10449 | { | |
10450 | struct got_entry **lgot_ents; | |
10451 | struct got_entry **end_lgot_ents; | |
10452 | struct plt_entry **local_plt; | |
10453 | struct plt_entry **end_local_plt; | |
f961d9dd | 10454 | unsigned char *lgot_masks; |
927be08e AM |
10455 | bfd_size_type locsymcount; |
10456 | Elf_Internal_Shdr *symtab_hdr; | |
10457 | asection *s, *srel; | |
10458 | ||
10459 | if (!is_ppc64_elf (ibfd)) | |
10460 | continue; | |
10461 | ||
10462 | lgot_ents = elf_local_got_ents (ibfd); | |
10463 | if (!lgot_ents) | |
10464 | continue; | |
10465 | ||
10466 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
10467 | locsymcount = symtab_hdr->sh_info; | |
10468 | end_lgot_ents = lgot_ents + locsymcount; | |
10469 | local_plt = (struct plt_entry **) end_lgot_ents; | |
10470 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10471 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e AM |
10472 | s = ppc64_elf_tdata (ibfd)->got; |
10473 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
10474 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) | |
10475 | { | |
10476 | struct got_entry *ent; | |
10477 | ||
10478 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d AM |
10479 | { |
10480 | unsigned int num = 1; | |
10481 | ent->got.offset = s->size; | |
10482 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
10483 | num = 2; | |
10484 | s->size += num * 8; | |
10485 | if (info->shared) | |
10486 | srel->size += num * sizeof (Elf64_External_Rela); | |
10487 | else if ((*lgot_masks & PLT_IFUNC) != 0) | |
10488 | { | |
10489 | htab->reliplt->size | |
10490 | += num * sizeof (Elf64_External_Rela); | |
10491 | htab->got_reli_size | |
10492 | += num * sizeof (Elf64_External_Rela); | |
10493 | } | |
10494 | } | |
927be08e AM |
10495 | } |
10496 | } | |
10497 | ||
10498 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
10499 | ||
10500 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10501 | { | |
10502 | struct got_entry *ent; | |
10503 | ||
10504 | if (!is_ppc64_elf (ibfd)) | |
10505 | continue; | |
10506 | ||
10507 | ent = ppc64_tlsld_got (ibfd); | |
10508 | if (!ent->is_indirect | |
10509 | && ent->got.offset != (bfd_vma) -1) | |
10510 | { | |
10511 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
10512 | ent->got.offset = s->size; | |
10513 | s->size += 16; | |
10514 | if (info->shared) | |
10515 | { | |
10516 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10517 | srel->size += sizeof (Elf64_External_Rela); | |
10518 | } | |
10519 | } | |
10520 | } | |
10521 | ||
10522 | done_something = htab->reliplt->rawsize != htab->reliplt->size; | |
10523 | if (!done_something) | |
10524 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
10525 | { | |
10526 | asection *got; | |
10527 | ||
10528 | if (!is_ppc64_elf (ibfd)) | |
10529 | continue; | |
10530 | ||
10531 | got = ppc64_elf_tdata (ibfd)->got; | |
10532 | if (got != NULL) | |
10533 | { | |
10534 | done_something = got->rawsize != got->size; | |
10535 | if (done_something) | |
10536 | break; | |
10537 | } | |
10538 | } | |
10539 | ||
10540 | if (done_something) | |
10541 | (*htab->layout_sections_again) (); | |
10542 | ||
10543 | /* Set up for second pass over toc sections to recalculate elf_gp | |
10544 | on input sections. */ | |
10545 | htab->toc_bfd = NULL; | |
10546 | htab->toc_first_sec = NULL; | |
10547 | htab->second_toc_pass = TRUE; | |
10548 | return done_something; | |
10549 | } | |
10550 | ||
10551 | /* Called after second pass of multitoc partitioning. */ | |
10552 | ||
10553 | void | |
10554 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
10555 | { | |
10556 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10557 | ||
10558 | /* After the second pass, toc_curr tracks the TOC offset used | |
10559 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 10560 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
10561 | } |
10562 | ||
9b5ecbd0 AM |
10563 | /* No toc references were found in ISEC. If the code in ISEC makes no |
10564 | calls, then there's no need to use toc adjusting stubs when branching | |
10565 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
10566 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
10567 | needed, and 2 if a cyclical call-graph was found but no other reason | |
10568 | for a stub was detected. If called from the top level, a return of | |
10569 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
10570 | |
10571 | static int | |
4ce794b7 | 10572 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 10573 | { |
9b5ecbd0 | 10574 | int ret; |
70cc837d AM |
10575 | |
10576 | /* Mark this section as checked. */ | |
10577 | isec->call_check_done = 1; | |
9b5ecbd0 | 10578 | |
772119ce AM |
10579 | /* We know none of our code bearing sections will need toc stubs. */ |
10580 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
10581 | return 0; | |
10582 | ||
eea6121a | 10583 | if (isec->size == 0) |
082c50f8 AM |
10584 | return 0; |
10585 | ||
4c52953f AM |
10586 | if (isec->output_section == NULL) |
10587 | return 0; | |
10588 | ||
4c52953f | 10589 | ret = 0; |
70cc837d | 10590 | if (isec->reloc_count != 0) |
9b5ecbd0 | 10591 | { |
70cc837d AM |
10592 | Elf_Internal_Rela *relstart, *rel; |
10593 | Elf_Internal_Sym *local_syms; | |
10594 | struct ppc_link_hash_table *htab; | |
2917689a | 10595 | |
70cc837d AM |
10596 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
10597 | info->keep_memory); | |
10598 | if (relstart == NULL) | |
10599 | return -1; | |
90aecf7a | 10600 | |
70cc837d AM |
10601 | /* Look for branches to outside of this section. */ |
10602 | local_syms = NULL; | |
10603 | htab = ppc_hash_table (info); | |
10604 | if (htab == NULL) | |
10605 | return -1; | |
4c52953f | 10606 | |
70cc837d | 10607 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 10608 | { |
70cc837d AM |
10609 | enum elf_ppc64_reloc_type r_type; |
10610 | unsigned long r_symndx; | |
10611 | struct elf_link_hash_entry *h; | |
10612 | struct ppc_link_hash_entry *eh; | |
10613 | Elf_Internal_Sym *sym; | |
10614 | asection *sym_sec; | |
10615 | struct _opd_sec_data *opd; | |
10616 | bfd_vma sym_value; | |
10617 | bfd_vma dest; | |
10618 | ||
10619 | r_type = ELF64_R_TYPE (rel->r_info); | |
10620 | if (r_type != R_PPC64_REL24 | |
10621 | && r_type != R_PPC64_REL14 | |
10622 | && r_type != R_PPC64_REL14_BRTAKEN | |
10623 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
10624 | continue; | |
4c52953f | 10625 | |
70cc837d AM |
10626 | r_symndx = ELF64_R_SYM (rel->r_info); |
10627 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
10628 | isec->owner)) | |
4c52953f | 10629 | { |
70cc837d AM |
10630 | ret = -1; |
10631 | break; | |
10632 | } | |
4c52953f | 10633 | |
70cc837d AM |
10634 | /* Calls to dynamic lib functions go through a plt call stub |
10635 | that uses r2. */ | |
10636 | eh = (struct ppc_link_hash_entry *) h; | |
10637 | if (eh != NULL | |
10638 | && (eh->elf.plt.plist != NULL | |
10639 | || (eh->oh != NULL | |
10640 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
10641 | { | |
10642 | ret = 1; | |
10643 | break; | |
4c52953f AM |
10644 | } |
10645 | ||
70cc837d AM |
10646 | if (sym_sec == NULL) |
10647 | /* Ignore other undefined symbols. */ | |
4c52953f | 10648 | continue; |
4c52953f | 10649 | |
70cc837d AM |
10650 | /* Assume branches to other sections not included in the |
10651 | link need stubs too, to cover -R and absolute syms. */ | |
10652 | if (sym_sec->output_section == NULL) | |
10653 | { | |
10654 | ret = 1; | |
10655 | break; | |
10656 | } | |
4c52953f | 10657 | |
70cc837d AM |
10658 | if (h == NULL) |
10659 | sym_value = sym->st_value; | |
10660 | else | |
10661 | { | |
10662 | if (h->root.type != bfd_link_hash_defined | |
10663 | && h->root.type != bfd_link_hash_defweak) | |
10664 | abort (); | |
10665 | sym_value = h->root.u.def.value; | |
10666 | } | |
10667 | sym_value += rel->r_addend; | |
4c52953f | 10668 | |
70cc837d AM |
10669 | /* If this branch reloc uses an opd sym, find the code section. */ |
10670 | opd = get_opd_info (sym_sec); | |
10671 | if (opd != NULL) | |
10672 | { | |
10673 | if (h == NULL && opd->adjust != NULL) | |
10674 | { | |
10675 | long adjust; | |
4c52953f | 10676 | |
70cc837d AM |
10677 | adjust = opd->adjust[sym->st_value / 8]; |
10678 | if (adjust == -1) | |
10679 | /* Assume deleted functions won't ever be called. */ | |
10680 | continue; | |
10681 | sym_value += adjust; | |
10682 | } | |
4c52953f | 10683 | |
70cc837d AM |
10684 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); |
10685 | if (dest == (bfd_vma) -1) | |
10686 | continue; | |
10687 | } | |
10688 | else | |
10689 | dest = (sym_value | |
10690 | + sym_sec->output_offset | |
10691 | + sym_sec->output_section->vma); | |
4c52953f | 10692 | |
70cc837d AM |
10693 | /* Ignore branch to self. */ |
10694 | if (sym_sec == isec) | |
10695 | continue; | |
4c52953f | 10696 | |
70cc837d AM |
10697 | /* If the called function uses the toc, we need a stub. */ |
10698 | if (sym_sec->has_toc_reloc | |
10699 | || sym_sec->makes_toc_func_call) | |
4c52953f | 10700 | { |
70cc837d | 10701 | ret = 1; |
4c52953f AM |
10702 | break; |
10703 | } | |
70cc837d AM |
10704 | |
10705 | /* Assume any branch that needs a long branch stub might in fact | |
10706 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
10707 | else if (dest - (isec->output_offset | |
10708 | + isec->output_section->vma | |
10709 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
4c52953f | 10710 | { |
70cc837d AM |
10711 | ret = 1; |
10712 | break; | |
10713 | } | |
10714 | ||
10715 | /* If calling back to a section in the process of being | |
10716 | tested, we can't say for sure that no toc adjusting stubs | |
10717 | are needed, so don't return zero. */ | |
10718 | else if (sym_sec->call_check_in_progress) | |
10719 | ret = 2; | |
10720 | ||
10721 | /* Branches to another section that itself doesn't have any TOC | |
10722 | references are OK. Recursively call ourselves to check. */ | |
10723 | else if (!sym_sec->call_check_done) | |
10724 | { | |
10725 | int recur; | |
10726 | ||
10727 | /* Mark current section as indeterminate, so that other | |
10728 | sections that call back to current won't be marked as | |
10729 | known. */ | |
10730 | isec->call_check_in_progress = 1; | |
10731 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
10732 | isec->call_check_in_progress = 0; | |
10733 | ||
4c52953f AM |
10734 | if (recur != 0) |
10735 | { | |
70cc837d AM |
10736 | ret = recur; |
10737 | if (recur != 2) | |
10738 | break; | |
4c52953f AM |
10739 | } |
10740 | } | |
4c52953f | 10741 | } |
70cc837d AM |
10742 | |
10743 | if (local_syms != NULL | |
10744 | && (elf_symtab_hdr (isec->owner).contents | |
10745 | != (unsigned char *) local_syms)) | |
10746 | free (local_syms); | |
10747 | if (elf_section_data (isec)->relocs != relstart) | |
10748 | free (relstart); | |
9b5ecbd0 AM |
10749 | } |
10750 | ||
70cc837d AM |
10751 | if ((ret & 1) == 0 |
10752 | && isec->map_head.s != NULL | |
10753 | && (strcmp (isec->output_section->name, ".init") == 0 | |
10754 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
10755 | { | |
10756 | if (isec->map_head.s->has_toc_reloc | |
10757 | || isec->map_head.s->makes_toc_func_call) | |
10758 | ret = 1; | |
10759 | else if (!isec->map_head.s->call_check_done) | |
10760 | { | |
10761 | int recur; | |
10762 | isec->call_check_in_progress = 1; | |
10763 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
10764 | isec->call_check_in_progress = 0; | |
10765 | if (recur != 0) | |
10766 | ret = recur; | |
10767 | } | |
10768 | } | |
10769 | ||
10770 | if (ret == 1) | |
10771 | isec->makes_toc_func_call = 1; | |
4c52953f | 10772 | |
9b5ecbd0 AM |
10773 | return ret; |
10774 | } | |
10775 | ||
721956f4 AM |
10776 | /* The linker repeatedly calls this function for each input section, |
10777 | in the order that input sections are linked into output sections. | |
10778 | Build lists of input sections to determine groupings between which | |
10779 | we may insert linker stubs. */ | |
10780 | ||
9b5ecbd0 | 10781 | bfd_boolean |
4ce794b7 | 10782 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
10783 | { |
10784 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10785 | ||
4dfe6ac6 NC |
10786 | if (htab == NULL) |
10787 | return FALSE; | |
10788 | ||
734b6cf9 AM |
10789 | if ((isec->output_section->flags & SEC_CODE) != 0 |
10790 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 10791 | { |
734b6cf9 | 10792 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 10793 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 10794 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
10795 | /* This happens to make the list in reverse order, |
10796 | which is what we want. */ | |
734b6cf9 AM |
10797 | PREV_SEC (isec) = *list; |
10798 | *list = isec; | |
721956f4 | 10799 | } |
ad8e1ba5 | 10800 | |
4c52953f | 10801 | if (htab->multi_toc_needed) |
9b5ecbd0 | 10802 | { |
4c52953f AM |
10803 | /* If a code section has a function that uses the TOC then we need |
10804 | to use the right TOC (obviously). Also, make sure that .opd gets | |
10805 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
f94498ff AM |
10806 | can't find their function symbol (shouldn't ever happen now). |
10807 | Also specially treat .fixup for the linux kernel. .fixup | |
10808 | contains branches, but only back to the function that hit an | |
10809 | exception. */ | |
10810 | if (isec->has_toc_reloc | |
10811 | || (isec->flags & SEC_CODE) == 0 | |
10812 | || strcmp (isec->name, ".fixup") == 0) | |
4c52953f AM |
10813 | { |
10814 | if (elf_gp (isec->owner) != 0) | |
10815 | htab->toc_curr = elf_gp (isec->owner); | |
10816 | } | |
6683a28d AM |
10817 | else |
10818 | { | |
10819 | if (!isec->call_check_done | |
10820 | && toc_adjusting_stub_needed (info, isec) < 0) | |
10821 | return FALSE; | |
10822 | /* If we make a local call from this section, ie. a branch | |
10823 | without a following nop, then we have no place to put a | |
10824 | toc restoring insn. We must use the same toc group as | |
10825 | the callee. | |
10826 | Testing makes_toc_func_call actually tests for *any* | |
10827 | calls to functions that need a good toc pointer. A more | |
10828 | precise test would be better, as this one will set | |
10829 | incorrect values for pasted .init/.fini fragments. | |
10830 | (Fixed later in check_pasted_section.) */ | |
10831 | if (isec->makes_toc_func_call | |
10832 | && elf_gp (isec->owner) != 0) | |
10833 | htab->toc_curr = elf_gp (isec->owner); | |
10834 | } | |
9b5ecbd0 | 10835 | } |
ad8e1ba5 AM |
10836 | |
10837 | /* Functions that don't use the TOC can belong in any TOC group. | |
6683a28d | 10838 | Use the last TOC base. */ |
ad8e1ba5 | 10839 | htab->stub_group[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 10840 | return TRUE; |
721956f4 AM |
10841 | } |
10842 | ||
70cc837d AM |
10843 | /* Check that all .init and .fini sections use the same toc, if they |
10844 | have toc relocs. */ | |
10845 | ||
10846 | static bfd_boolean | |
10847 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
10848 | { | |
10849 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
10850 | ||
10851 | if (o != NULL) | |
10852 | { | |
10853 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
10854 | bfd_vma toc_off = 0; | |
10855 | asection *i; | |
10856 | ||
10857 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
10858 | if (i->has_toc_reloc) | |
10859 | { | |
10860 | if (toc_off == 0) | |
10861 | toc_off = htab->stub_group[i->id].toc_off; | |
10862 | else if (toc_off != htab->stub_group[i->id].toc_off) | |
10863 | return FALSE; | |
10864 | } | |
6683a28d AM |
10865 | |
10866 | if (toc_off == 0) | |
10867 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
10868 | if (i->makes_toc_func_call) | |
10869 | { | |
10870 | toc_off = htab->stub_group[i->id].toc_off; | |
10871 | break; | |
10872 | } | |
10873 | ||
70cc837d AM |
10874 | /* Make sure the whole pasted function uses the same toc offset. */ |
10875 | if (toc_off != 0) | |
10876 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
10877 | htab->stub_group[i->id].toc_off = toc_off; | |
10878 | } | |
10879 | return TRUE; | |
10880 | } | |
10881 | ||
10882 | bfd_boolean | |
10883 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
10884 | { | |
10885 | return (check_pasted_section (info, ".init") | |
10886 | & check_pasted_section (info, ".fini")); | |
10887 | } | |
10888 | ||
721956f4 AM |
10889 | /* See whether we can group stub sections together. Grouping stub |
10890 | sections may result in fewer stubs. More importantly, we need to | |
10891 | put all .init* and .fini* stubs at the beginning of the .init or | |
10892 | .fini output sections respectively, because glibc splits the | |
10893 | _init and _fini functions into multiple parts. Putting a stub in | |
10894 | the middle of a function is not a good idea. */ | |
10895 | ||
10896 | static void | |
4ce794b7 AM |
10897 | group_sections (struct ppc_link_hash_table *htab, |
10898 | bfd_size_type stub_group_size, | |
10899 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 10900 | { |
7c8fe5c4 AM |
10901 | asection **list; |
10902 | bfd_size_type stub14_group_size; | |
10903 | bfd_boolean suppress_size_errors; | |
10904 | ||
10905 | suppress_size_errors = FALSE; | |
10906 | stub14_group_size = stub_group_size; | |
10907 | if (stub_group_size == 1) | |
10908 | { | |
10909 | /* Default values. */ | |
10910 | if (stubs_always_before_branch) | |
10911 | { | |
10912 | stub_group_size = 0x1e00000; | |
10913 | stub14_group_size = 0x7800; | |
10914 | } | |
10915 | else | |
10916 | { | |
10917 | stub_group_size = 0x1c00000; | |
10918 | stub14_group_size = 0x7000; | |
10919 | } | |
10920 | suppress_size_errors = TRUE; | |
10921 | } | |
10922 | ||
10923 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 10924 | do |
721956f4 | 10925 | { |
734b6cf9 AM |
10926 | asection *tail = *list; |
10927 | while (tail != NULL) | |
721956f4 | 10928 | { |
734b6cf9 AM |
10929 | asection *curr; |
10930 | asection *prev; | |
10931 | bfd_size_type total; | |
10932 | bfd_boolean big_sec; | |
10933 | bfd_vma curr_toc; | |
10934 | ||
10935 | curr = tail; | |
eea6121a | 10936 | total = tail->size; |
6bee8834 AM |
10937 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
10938 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
7c8fe5c4 AM |
10939 | ? stub14_group_size : stub_group_size); |
10940 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
10941 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
10942 | tail->owner, tail); | |
734b6cf9 AM |
10943 | curr_toc = htab->stub_group[tail->id].toc_off; |
10944 | ||
10945 | while ((prev = PREV_SEC (curr)) != NULL | |
10946 | && ((total += curr->output_offset - prev->output_offset) | |
6bee8834 AM |
10947 | < (ppc64_elf_section_data (prev) != NULL |
10948 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 10949 | ? stub14_group_size : stub_group_size)) |
ad8e1ba5 | 10950 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
10951 | curr = prev; |
10952 | ||
10953 | /* OK, the size from the start of CURR to the end is less | |
10954 | than stub_group_size and thus can be handled by one stub | |
10955 | section. (or the tail section is itself larger than | |
10956 | stub_group_size, in which case we may be toast.) We | |
10957 | should really be keeping track of the total size of stubs | |
10958 | added here, as stubs contribute to the final output | |
10959 | section size. That's a little tricky, and this way will | |
10960 | only break if stubs added make the total size more than | |
10961 | 2^25, ie. for the default stub_group_size, if stubs total | |
10962 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
10963 | do | |
721956f4 AM |
10964 | { |
10965 | prev = PREV_SEC (tail); | |
734b6cf9 | 10966 | /* Set up this stub group. */ |
721956f4 AM |
10967 | htab->stub_group[tail->id].link_sec = curr; |
10968 | } | |
734b6cf9 AM |
10969 | while (tail != curr && (tail = prev) != NULL); |
10970 | ||
10971 | /* But wait, there's more! Input sections up to stub_group_size | |
10972 | bytes before the stub section can be handled by it too. | |
10973 | Don't do this if we have a really large section after the | |
10974 | stubs, as adding more stubs increases the chance that | |
10975 | branches may not reach into the stub section. */ | |
10976 | if (!stubs_always_before_branch && !big_sec) | |
10977 | { | |
10978 | total = 0; | |
10979 | while (prev != NULL | |
10980 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
10981 | < (ppc64_elf_section_data (prev) != NULL |
10982 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
7c8fe5c4 | 10983 | ? stub14_group_size : stub_group_size)) |
734b6cf9 AM |
10984 | && htab->stub_group[prev->id].toc_off == curr_toc) |
10985 | { | |
10986 | tail = prev; | |
10987 | prev = PREV_SEC (tail); | |
10988 | htab->stub_group[tail->id].link_sec = curr; | |
10989 | } | |
10990 | } | |
10991 | tail = prev; | |
721956f4 AM |
10992 | } |
10993 | } | |
734b6cf9 AM |
10994 | while (list-- != htab->input_list); |
10995 | free (htab->input_list); | |
721956f4 AM |
10996 | #undef PREV_SEC |
10997 | } | |
10998 | ||
58d180e8 AM |
10999 | static const unsigned char glink_eh_frame_cie[] = |
11000 | { | |
11001 | 0, 0, 0, 16, /* length. */ | |
11002 | 0, 0, 0, 0, /* id. */ | |
11003 | 1, /* CIE version. */ | |
11004 | 'z', 'R', 0, /* Augmentation string. */ | |
11005 | 4, /* Code alignment. */ | |
11006 | 0x78, /* Data alignment. */ | |
11007 | 65, /* RA reg. */ | |
11008 | 1, /* Augmentation size. */ | |
11009 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
11010 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ | |
11011 | }; | |
11012 | ||
d969d15f AM |
11013 | /* Stripping output sections is normally done before dynamic section |
11014 | symbols have been allocated. This function is called later, and | |
11015 | handles cases like htab->brlt which is mapped to its own output | |
11016 | section. */ | |
11017 | ||
11018 | static void | |
11019 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
11020 | { | |
11021 | if (isec->size == 0 | |
11022 | && isec->output_section->size == 0 | |
11023 | && !bfd_section_removed_from_list (info->output_bfd, | |
11024 | isec->output_section) | |
11025 | && elf_section_data (isec->output_section)->dynindx == 0) | |
11026 | { | |
11027 | isec->output_section->flags |= SEC_EXCLUDE; | |
11028 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
11029 | info->output_bfd->section_count--; | |
11030 | } | |
11031 | } | |
11032 | ||
721956f4 AM |
11033 | /* Determine and set the size of the stub section for a final link. |
11034 | ||
11035 | The basic idea here is to examine all the relocations looking for | |
11036 | PC-relative calls to a target that is unreachable with a "bl" | |
11037 | instruction. */ | |
11038 | ||
b34976b6 | 11039 | bfd_boolean |
9df0ef5f AM |
11040 | ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size, |
11041 | bfd_boolean plt_static_chain) | |
721956f4 AM |
11042 | { |
11043 | bfd_size_type stub_group_size; | |
b34976b6 | 11044 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
11045 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
11046 | ||
4dfe6ac6 NC |
11047 | if (htab == NULL) |
11048 | return FALSE; | |
11049 | ||
9df0ef5f | 11050 | htab->plt_static_chain = plt_static_chain; |
721956f4 AM |
11051 | stubs_always_before_branch = group_size < 0; |
11052 | if (group_size < 0) | |
11053 | stub_group_size = -group_size; | |
11054 | else | |
11055 | stub_group_size = group_size; | |
721956f4 AM |
11056 | |
11057 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
11058 | ||
721956f4 AM |
11059 | while (1) |
11060 | { | |
11061 | bfd *input_bfd; | |
11062 | unsigned int bfd_indx; | |
11063 | asection *stub_sec; | |
721956f4 AM |
11064 | |
11065 | htab->stub_iteration += 1; | |
721956f4 AM |
11066 | |
11067 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
11068 | input_bfd != NULL; | |
11069 | input_bfd = input_bfd->link_next, bfd_indx++) | |
11070 | { | |
11071 | Elf_Internal_Shdr *symtab_hdr; | |
11072 | asection *section; | |
6cdc0ccc | 11073 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 11074 | |
0c8d6e5c | 11075 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
11076 | continue; |
11077 | ||
721956f4 | 11078 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 11079 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
11080 | if (symtab_hdr->sh_info == 0) |
11081 | continue; | |
11082 | ||
721956f4 AM |
11083 | /* Walk over each section attached to the input bfd. */ |
11084 | for (section = input_bfd->sections; | |
11085 | section != NULL; | |
11086 | section = section->next) | |
11087 | { | |
721956f4 | 11088 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
11089 | |
11090 | /* If there aren't any relocs, then there's nothing more | |
11091 | to do. */ | |
11092 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
11093 | || (section->flags & SEC_ALLOC) == 0 |
11094 | || (section->flags & SEC_LOAD) == 0 | |
11095 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
11096 | || section->reloc_count == 0) |
11097 | continue; | |
11098 | ||
11099 | /* If this section is a link-once section that will be | |
11100 | discarded, then don't create any stubs. */ | |
11101 | if (section->output_section == NULL | |
927be08e | 11102 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
11103 | continue; |
11104 | ||
1e2f5b6e AM |
11105 | /* Get the relocs. */ |
11106 | internal_relocs | |
4ce794b7 | 11107 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 11108 | info->keep_memory); |
721956f4 | 11109 | if (internal_relocs == NULL) |
1e2f5b6e | 11110 | goto error_ret_free_local; |
721956f4 AM |
11111 | |
11112 | /* Now examine each relocation. */ | |
11113 | irela = internal_relocs; | |
11114 | irelaend = irela + section->reloc_count; | |
11115 | for (; irela < irelaend; irela++) | |
11116 | { | |
4ce794b7 AM |
11117 | enum elf_ppc64_reloc_type r_type; |
11118 | unsigned int r_indx; | |
721956f4 AM |
11119 | enum ppc_stub_type stub_type; |
11120 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 11121 | asection *sym_sec, *code_sec; |
e054468f | 11122 | bfd_vma sym_value, code_value; |
721956f4 | 11123 | bfd_vma destination; |
8843416a | 11124 | bfd_boolean ok_dest; |
721956f4 | 11125 | struct ppc_link_hash_entry *hash; |
8387904d | 11126 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
11127 | struct elf_link_hash_entry *h; |
11128 | Elf_Internal_Sym *sym; | |
721956f4 AM |
11129 | char *stub_name; |
11130 | const asection *id_sec; | |
74f0fb50 | 11131 | struct _opd_sec_data *opd; |
e054468f | 11132 | struct plt_entry *plt_ent; |
721956f4 AM |
11133 | |
11134 | r_type = ELF64_R_TYPE (irela->r_info); | |
11135 | r_indx = ELF64_R_SYM (irela->r_info); | |
11136 | ||
4ce794b7 | 11137 | if (r_type >= R_PPC64_max) |
721956f4 AM |
11138 | { |
11139 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 11140 | goto error_ret_free_internal; |
721956f4 AM |
11141 | } |
11142 | ||
11143 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
11144 | if (r_type != R_PPC64_REL24 |
11145 | && r_type != R_PPC64_REL14 | |
11146 | && r_type != R_PPC64_REL14_BRTAKEN | |
11147 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
11148 | continue; |
11149 | ||
11150 | /* Now determine the call target, its name, value, | |
11151 | section. */ | |
411e1bfb AM |
11152 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
11153 | r_indx, input_bfd)) | |
11154 | goto error_ret_free_internal; | |
11155 | hash = (struct ppc_link_hash_entry *) h; | |
11156 | ||
8843416a | 11157 | ok_dest = FALSE; |
8387904d | 11158 | fdh = NULL; |
7fe2b9a6 | 11159 | sym_value = 0; |
411e1bfb | 11160 | if (hash == NULL) |
721956f4 | 11161 | { |
411e1bfb | 11162 | sym_value = sym->st_value; |
8843416a | 11163 | ok_dest = TRUE; |
721956f4 | 11164 | } |
7fe2b9a6 AM |
11165 | else if (hash->elf.root.type == bfd_link_hash_defined |
11166 | || hash->elf.root.type == bfd_link_hash_defweak) | |
11167 | { | |
11168 | sym_value = hash->elf.root.u.def.value; | |
11169 | if (sym_sec->output_section != NULL) | |
11170 | ok_dest = TRUE; | |
11171 | } | |
11172 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
11173 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 11174 | { |
99877b66 | 11175 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
11176 | use the func descriptor sym instead if it is |
11177 | defined. */ | |
ceb1f1ef | 11178 | if (hash->elf.root.root.string[0] == '.' |
b31867b6 | 11179 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
8387904d | 11180 | { |
8387904d AM |
11181 | if (fdh->elf.root.type == bfd_link_hash_defined |
11182 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
11183 | { | |
11184 | sym_sec = fdh->elf.root.u.def.section; | |
11185 | sym_value = fdh->elf.root.u.def.value; | |
11186 | if (sym_sec->output_section != NULL) | |
11187 | ok_dest = TRUE; | |
11188 | } | |
99877b66 AM |
11189 | else |
11190 | fdh = NULL; | |
8387904d | 11191 | } |
7fe2b9a6 AM |
11192 | } |
11193 | else | |
11194 | { | |
11195 | bfd_set_error (bfd_error_bad_value); | |
11196 | goto error_ret_free_internal; | |
721956f4 AM |
11197 | } |
11198 | ||
8843416a AM |
11199 | destination = 0; |
11200 | if (ok_dest) | |
11201 | { | |
11202 | sym_value += irela->r_addend; | |
11203 | destination = (sym_value | |
11204 | + sym_sec->output_offset | |
11205 | + sym_sec->output_section->vma); | |
11206 | } | |
11207 | ||
8387904d | 11208 | code_sec = sym_sec; |
e054468f | 11209 | code_value = sym_value; |
74f0fb50 AM |
11210 | opd = get_opd_info (sym_sec); |
11211 | if (opd != NULL) | |
8387904d AM |
11212 | { |
11213 | bfd_vma dest; | |
11214 | ||
74f0fb50 | 11215 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 11216 | { |
74f0fb50 | 11217 | long adjust = opd->adjust[sym_value / 8]; |
8387904d AM |
11218 | if (adjust == -1) |
11219 | continue; | |
e054468f | 11220 | code_value += adjust; |
8387904d AM |
11221 | sym_value += adjust; |
11222 | } | |
11223 | dest = opd_entry_value (sym_sec, sym_value, | |
e054468f | 11224 | &code_sec, &code_value); |
8387904d AM |
11225 | if (dest != (bfd_vma) -1) |
11226 | { | |
11227 | destination = dest; | |
11228 | if (fdh != NULL) | |
11229 | { | |
11230 | /* Fixup old ABI sym to point at code | |
11231 | entry. */ | |
99877b66 | 11232 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 11233 | hash->elf.root.u.def.section = code_sec; |
e054468f | 11234 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
11235 | } |
11236 | } | |
11237 | } | |
11238 | ||
721956f4 | 11239 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 11240 | plt_ent = NULL; |
721956f4 | 11241 | stub_type = ppc_type_of_stub (section, irela, &hash, |
e054468f | 11242 | &plt_ent, destination); |
ad8e1ba5 AM |
11243 | |
11244 | if (stub_type != ppc_stub_plt_call) | |
11245 | { | |
11246 | /* Check whether we need a TOC adjusting stub. | |
11247 | Since the linker pastes together pieces from | |
11248 | different object files when creating the | |
11249 | _init and _fini functions, it may be that a | |
11250 | call to what looks like a local sym is in | |
11251 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
11252 | if (code_sec != NULL |
11253 | && code_sec->output_section != NULL | |
11254 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 11255 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
11256 | && (code_sec->has_toc_reloc |
11257 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
11258 | stub_type = ppc_stub_long_branch_r2off; |
11259 | } | |
11260 | ||
721956f4 AM |
11261 | if (stub_type == ppc_stub_none) |
11262 | continue; | |
11263 | ||
411e1bfb AM |
11264 | /* __tls_get_addr calls might be eliminated. */ |
11265 | if (stub_type != ppc_stub_plt_call | |
11266 | && hash != NULL | |
8387904d AM |
11267 | && (hash == htab->tls_get_addr |
11268 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
11269 | && section->has_tls_reloc |
11270 | && irela != internal_relocs) | |
11271 | { | |
11272 | /* Get tls info. */ | |
f961d9dd | 11273 | unsigned char *tls_mask; |
411e1bfb | 11274 | |
3a71aa26 | 11275 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
11276 | irela - 1, input_bfd)) |
11277 | goto error_ret_free_internal; | |
e7b938ca | 11278 | if (*tls_mask != 0) |
411e1bfb AM |
11279 | continue; |
11280 | } | |
11281 | ||
3b421ab3 AM |
11282 | if (stub_type == ppc_stub_plt_call |
11283 | && irela + 1 < irelaend | |
11284 | && irela[1].r_offset == irela->r_offset + 4 | |
11285 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE | |
11286 | && !tocsave_find (htab, INSERT, | |
11287 | &local_syms, irela + 1, input_bfd)) | |
11288 | goto error_ret_free_internal; | |
11289 | ||
721956f4 AM |
11290 | /* Support for grouping stub sections. */ |
11291 | id_sec = htab->stub_group[section->id].link_sec; | |
11292 | ||
11293 | /* Get the name of this stub. */ | |
11294 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
11295 | if (!stub_name) | |
11296 | goto error_ret_free_internal; | |
11297 | ||
11298 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 11299 | stub_name, FALSE, FALSE); |
721956f4 AM |
11300 | if (stub_entry != NULL) |
11301 | { | |
11302 | /* The proper stub has already been created. */ | |
11303 | free (stub_name); | |
11304 | continue; | |
11305 | } | |
11306 | ||
25f53a85 | 11307 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
11308 | if (stub_entry == NULL) |
11309 | { | |
11310 | free (stub_name); | |
6cdc0ccc AM |
11311 | error_ret_free_internal: |
11312 | if (elf_section_data (section)->relocs == NULL) | |
11313 | free (internal_relocs); | |
11314 | error_ret_free_local: | |
11315 | if (local_syms != NULL | |
11316 | && (symtab_hdr->contents | |
11317 | != (unsigned char *) local_syms)) | |
11318 | free (local_syms); | |
b34976b6 | 11319 | return FALSE; |
721956f4 AM |
11320 | } |
11321 | ||
ad8e1ba5 | 11322 | stub_entry->stub_type = stub_type; |
e054468f AM |
11323 | if (stub_type != ppc_stub_plt_call) |
11324 | { | |
11325 | stub_entry->target_value = code_value; | |
11326 | stub_entry->target_section = code_sec; | |
11327 | } | |
11328 | else | |
11329 | { | |
11330 | stub_entry->target_value = sym_value; | |
11331 | stub_entry->target_section = sym_sec; | |
11332 | } | |
721956f4 | 11333 | stub_entry->h = hash; |
e054468f | 11334 | stub_entry->plt_ent = plt_ent; |
411e1bfb | 11335 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
11336 | |
11337 | if (stub_entry->h != NULL) | |
11338 | htab->stub_globals += 1; | |
721956f4 AM |
11339 | } |
11340 | ||
11341 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 11342 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 11343 | free (internal_relocs); |
721956f4 | 11344 | } |
6cdc0ccc AM |
11345 | |
11346 | if (local_syms != NULL | |
11347 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
11348 | { | |
11349 | if (!info->keep_memory) | |
11350 | free (local_syms); | |
11351 | else | |
11352 | symtab_hdr->contents = (unsigned char *) local_syms; | |
11353 | } | |
721956f4 AM |
11354 | } |
11355 | ||
5c3dead3 | 11356 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
11357 | stub sections. */ |
11358 | for (stub_sec = htab->stub_bfd->sections; | |
11359 | stub_sec != NULL; | |
11360 | stub_sec = stub_sec->next) | |
e717da7e | 11361 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 11362 | { |
5c3dead3 | 11363 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
11364 | stub_sec->size = 0; |
11365 | stub_sec->reloc_count = 0; | |
84f5d08e | 11366 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 11367 | } |
eea6121a AM |
11368 | |
11369 | htab->brlt->size = 0; | |
84f5d08e AM |
11370 | htab->brlt->reloc_count = 0; |
11371 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 11372 | if (htab->relbrlt != NULL) |
eea6121a | 11373 | htab->relbrlt->size = 0; |
721956f4 | 11374 | |
63bc6f6c | 11375 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 11376 | |
176a0d42 AM |
11377 | if (info->emitrelocations |
11378 | && htab->glink != NULL && htab->glink->size != 0) | |
11379 | { | |
11380 | htab->glink->reloc_count = 1; | |
11381 | htab->glink->flags |= SEC_RELOC; | |
11382 | } | |
11383 | ||
58d180e8 AM |
11384 | if (htab->glink_eh_frame != NULL |
11385 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
11386 | && (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0) | |
11387 | { | |
11388 | bfd_size_type size = 0; | |
11389 | ||
11390 | for (stub_sec = htab->stub_bfd->sections; | |
11391 | stub_sec != NULL; | |
11392 | stub_sec = stub_sec->next) | |
11393 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11394 | size += 20; | |
11395 | if (htab->glink != NULL && htab->glink->size != 0) | |
11396 | size += 24; | |
11397 | if (size != 0) | |
11398 | size += sizeof (glink_eh_frame_cie); | |
11399 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
11400 | htab->glink_eh_frame->size = size; | |
11401 | } | |
11402 | ||
5c3dead3 AM |
11403 | for (stub_sec = htab->stub_bfd->sections; |
11404 | stub_sec != NULL; | |
11405 | stub_sec = stub_sec->next) | |
11406 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
11407 | && stub_sec->rawsize != stub_sec->size) | |
11408 | break; | |
11409 | ||
11410 | /* Exit from this loop when no stubs have been added, and no stubs | |
11411 | have changed size. */ | |
58d180e8 AM |
11412 | if (stub_sec == NULL |
11413 | && (htab->glink_eh_frame == NULL | |
11414 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
11415 | break; |
11416 | ||
721956f4 AM |
11417 | /* Ask the linker to do its stuff. */ |
11418 | (*htab->layout_sections_again) (); | |
11419 | } | |
11420 | ||
d969d15f AM |
11421 | maybe_strip_output (info, htab->brlt); |
11422 | if (htab->glink_eh_frame != NULL) | |
11423 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 11424 | |
b34976b6 | 11425 | return TRUE; |
721956f4 AM |
11426 | } |
11427 | ||
11428 | /* Called after we have determined section placement. If sections | |
805fc799 | 11429 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 11430 | |
805fc799 | 11431 | bfd_vma |
4ce794b7 | 11432 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 11433 | { |
805fc799 AM |
11434 | asection *s; |
11435 | bfd_vma TOCstart; | |
721956f4 | 11436 | |
805fc799 AM |
11437 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
11438 | order. The TOC starts where the first of these sections starts. */ | |
11439 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 11440 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11441 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 11442 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11443 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 11444 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 11445 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 11446 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
11447 | { |
11448 | /* This may happen for | |
11449 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
11450 | .toc directive | |
11451 | o bad linker script | |
11452 | o --gc-sections and empty TOC sections | |
11453 | ||
11454 | FIXME: Warn user? */ | |
11455 | ||
11456 | /* Look for a likely section. We probably won't even be | |
11457 | using TOCstart. */ | |
11458 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
11459 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
11460 | | SEC_EXCLUDE)) | |
805fc799 AM |
11461 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11462 | break; | |
721956f4 | 11463 | if (s == NULL) |
805fc799 | 11464 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11465 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
11466 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
11467 | break; | |
721956f4 | 11468 | if (s == NULL) |
805fc799 | 11469 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
11470 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
11471 | == SEC_ALLOC) | |
805fc799 | 11472 | break; |
721956f4 | 11473 | if (s == NULL) |
805fc799 | 11474 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 11475 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
11476 | break; |
11477 | } | |
721956f4 | 11478 | |
805fc799 AM |
11479 | TOCstart = 0; |
11480 | if (s != NULL) | |
11481 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 11482 | |
805fc799 | 11483 | return TOCstart; |
721956f4 AM |
11484 | } |
11485 | ||
11486 | /* Build all the stubs associated with the current output file. | |
11487 | The stubs are kept in a hash table attached to the main linker | |
11488 | hash table. This function is called via gldelf64ppc_finish. */ | |
11489 | ||
b34976b6 | 11490 | bfd_boolean |
4ce794b7 AM |
11491 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
11492 | struct bfd_link_info *info, | |
11493 | char **stats) | |
5d1634d7 AM |
11494 | { |
11495 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 11496 | asection *stub_sec; |
5d1634d7 | 11497 | bfd_byte *p; |
e717da7e | 11498 | int stub_sec_count = 0; |
5d1634d7 | 11499 | |
4dfe6ac6 NC |
11500 | if (htab == NULL) |
11501 | return FALSE; | |
11502 | ||
ad8e1ba5 | 11503 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
11504 | |
11505 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
11506 | for (stub_sec = htab->stub_bfd->sections; |
11507 | stub_sec != NULL; | |
11508 | stub_sec = stub_sec->next) | |
eea6121a AM |
11509 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
11510 | && stub_sec->size != 0) | |
e717da7e | 11511 | { |
eea6121a AM |
11512 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
11513 | if (stub_sec->contents == NULL) | |
11514 | return FALSE; | |
11515 | /* We want to check that built size is the same as calculated | |
11516 | size. rawsize is a convenient location to use. */ | |
11517 | stub_sec->rawsize = stub_sec->size; | |
11518 | stub_sec->size = 0; | |
e717da7e | 11519 | } |
5d1634d7 | 11520 | |
23eb7e01 | 11521 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 11522 | { |
9f951329 | 11523 | unsigned int indx; |
ad8e1ba5 | 11524 | bfd_vma plt0; |
9f951329 | 11525 | |
721956f4 | 11526 | /* Build the .glink plt call stub. */ |
97b639ba AM |
11527 | if (htab->emit_stub_syms) |
11528 | { | |
11529 | struct elf_link_hash_entry *h; | |
468392fb AM |
11530 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
11531 | TRUE, FALSE, FALSE); | |
97b639ba AM |
11532 | if (h == NULL) |
11533 | return FALSE; | |
11534 | if (h->root.type == bfd_link_hash_new) | |
11535 | { | |
11536 | h->root.type = bfd_link_hash_defined; | |
11537 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 11538 | h->root.u.def.value = 8; |
f5385ebf AM |
11539 | h->ref_regular = 1; |
11540 | h->def_regular = 1; | |
11541 | h->ref_regular_nonweak = 1; | |
11542 | h->forced_local = 1; | |
11543 | h->non_elf = 0; | |
97b639ba AM |
11544 | } |
11545 | } | |
176a0d42 AM |
11546 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
11547 | if (info->emitrelocations) | |
11548 | { | |
11549 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
11550 | if (r == NULL) | |
11551 | return FALSE; | |
11552 | r->r_offset = (htab->glink->output_offset | |
11553 | + htab->glink->output_section->vma); | |
11554 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
11555 | r->r_addend = plt0; | |
11556 | } | |
4ce794b7 | 11557 | p = htab->glink->contents; |
176a0d42 | 11558 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
11559 | bfd_put_64 (htab->glink->owner, plt0, p); |
11560 | p += 8; | |
11561 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 11562 | p += 4; |
ee4bf8d2 | 11563 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 11564 | p += 4; |
ee4bf8d2 | 11565 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 11566 | p += 4; |
ee4bf8d2 | 11567 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 11568 | p += 4; |
ee4bf8d2 | 11569 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 11570 | p += 4; |
ee4bf8d2 | 11571 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 11572 | p += 4; |
ee4bf8d2 | 11573 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 11574 | p += 4; |
4ce794b7 | 11575 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 11576 | p += 4; |
4ce794b7 | 11577 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 11578 | p += 4; |
4ce794b7 | 11579 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 11580 | p += 4; |
4ce794b7 | 11581 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 11582 | p += 4; |
ee4bf8d2 AM |
11583 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
11584 | { | |
11585 | bfd_put_32 (htab->glink->owner, NOP, p); | |
11586 | p += 4; | |
11587 | } | |
ad8e1ba5 | 11588 | |
9f951329 AM |
11589 | /* Build the .glink lazy link call stubs. */ |
11590 | indx = 0; | |
eea6121a | 11591 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
11592 | { |
11593 | if (indx < 0x8000) | |
11594 | { | |
4ce794b7 | 11595 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
11596 | p += 4; |
11597 | } | |
11598 | else | |
11599 | { | |
4ce794b7 | 11600 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 11601 | p += 4; |
4ce794b7 | 11602 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
11603 | p += 4; |
11604 | } | |
4ce794b7 | 11605 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 11606 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 11607 | indx++; |
9f951329 AM |
11608 | p += 4; |
11609 | } | |
eea6121a | 11610 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 11611 | } |
5d1634d7 | 11612 | |
eea6121a | 11613 | if (htab->brlt->size != 0) |
721956f4 | 11614 | { |
4ce794b7 | 11615 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 11616 | htab->brlt->size); |
4ce794b7 | 11617 | if (htab->brlt->contents == NULL) |
b34976b6 | 11618 | return FALSE; |
721956f4 | 11619 | } |
ee75fd95 | 11620 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
11621 | { |
11622 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 11623 | htab->relbrlt->size); |
63bc6f6c AM |
11624 | if (htab->relbrlt->contents == NULL) |
11625 | return FALSE; | |
11626 | } | |
5d1634d7 | 11627 | |
58d180e8 AM |
11628 | if (htab->glink_eh_frame != NULL |
11629 | && htab->glink_eh_frame->size != 0) | |
11630 | { | |
11631 | bfd_vma val; | |
11632 | ||
11633 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
11634 | if (p == NULL) | |
11635 | return FALSE; | |
11636 | htab->glink_eh_frame->contents = p; | |
11637 | ||
11638 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; | |
11639 | ||
11640 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
11641 | /* CIE length (rewrite in case little-endian). */ | |
11642 | bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); | |
11643 | p += sizeof (glink_eh_frame_cie); | |
11644 | ||
11645 | for (stub_sec = htab->stub_bfd->sections; | |
11646 | stub_sec != NULL; | |
11647 | stub_sec = stub_sec->next) | |
11648 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
11649 | { | |
11650 | /* FDE length. */ | |
11651 | bfd_put_32 (htab->elf.dynobj, 16, p); | |
11652 | p += 4; | |
11653 | /* CIE pointer. */ | |
11654 | val = p - htab->glink_eh_frame->contents; | |
11655 | bfd_put_32 (htab->elf.dynobj, val, p); | |
11656 | p += 4; | |
11657 | /* Offset to stub section. */ | |
11658 | val = (stub_sec->output_section->vma | |
11659 | + stub_sec->output_offset); | |
11660 | val -= (htab->glink_eh_frame->output_section->vma | |
11661 | + htab->glink_eh_frame->output_offset); | |
11662 | val -= p - htab->glink_eh_frame->contents; | |
11663 | if (val + 0x80000000 > 0xffffffff) | |
11664 | { | |
11665 | info->callbacks->einfo | |
8de848d8 | 11666 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
11667 | stub_sec->name); |
11668 | return FALSE; | |
11669 | } | |
11670 | bfd_put_32 (htab->elf.dynobj, val, p); | |
11671 | p += 4; | |
11672 | /* stub section size. */ | |
11673 | bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p); | |
11674 | p += 4; | |
11675 | /* Augmentation. */ | |
11676 | p += 1; | |
11677 | /* Pad. */ | |
11678 | p += 3; | |
11679 | } | |
11680 | if (htab->glink != NULL && htab->glink->size != 0) | |
11681 | { | |
11682 | /* FDE length. */ | |
11683 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
11684 | p += 4; | |
11685 | /* CIE pointer. */ | |
11686 | val = p - htab->glink_eh_frame->contents; | |
11687 | bfd_put_32 (htab->elf.dynobj, val, p); | |
11688 | p += 4; | |
11689 | /* Offset to .glink. */ | |
11690 | val = (htab->glink->output_section->vma | |
11691 | + htab->glink->output_offset | |
11692 | + 8); | |
11693 | val -= (htab->glink_eh_frame->output_section->vma | |
11694 | + htab->glink_eh_frame->output_offset); | |
11695 | val -= p - htab->glink_eh_frame->contents; | |
11696 | if (val + 0x80000000 > 0xffffffff) | |
11697 | { | |
11698 | info->callbacks->einfo | |
8de848d8 | 11699 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), |
58d180e8 AM |
11700 | htab->glink->name); |
11701 | return FALSE; | |
11702 | } | |
11703 | bfd_put_32 (htab->elf.dynobj, val, p); | |
11704 | p += 4; | |
11705 | /* .glink size. */ | |
11706 | bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p); | |
11707 | p += 4; | |
11708 | /* Augmentation. */ | |
11709 | p += 1; | |
11710 | ||
11711 | *p++ = DW_CFA_advance_loc + 1; | |
11712 | *p++ = DW_CFA_register; | |
11713 | *p++ = 65; | |
11714 | *p++ = 12; | |
11715 | *p++ = DW_CFA_advance_loc + 4; | |
11716 | *p++ = DW_CFA_restore_extended; | |
11717 | *p++ = 65; | |
11718 | } | |
11719 | htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents; | |
11720 | } | |
11721 | ||
721956f4 AM |
11722 | /* Build the stubs as directed by the stub hash table. */ |
11723 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 11724 | |
aa8a7074 AM |
11725 | if (htab->relbrlt != NULL) |
11726 | htab->relbrlt->reloc_count = 0; | |
11727 | ||
721956f4 AM |
11728 | for (stub_sec = htab->stub_bfd->sections; |
11729 | stub_sec != NULL; | |
11730 | stub_sec = stub_sec->next) | |
e717da7e AM |
11731 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
11732 | { | |
11733 | stub_sec_count += 1; | |
eea6121a | 11734 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
11735 | break; |
11736 | } | |
5d1634d7 | 11737 | |
721956f4 | 11738 | if (stub_sec != NULL |
58d180e8 AM |
11739 | || htab->glink->rawsize != htab->glink->size |
11740 | || (htab->glink_eh_frame != NULL | |
11741 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
5d1634d7 | 11742 | { |
b34976b6 | 11743 | htab->stub_error = TRUE; |
8de848d8 | 11744 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
5d1634d7 | 11745 | } |
721956f4 | 11746 | |
d2a300cf AM |
11747 | if (htab->stub_error) |
11748 | return FALSE; | |
11749 | ||
11750 | if (stats != NULL) | |
11751 | { | |
11752 | *stats = bfd_malloc (500); | |
11753 | if (*stats == NULL) | |
11754 | return FALSE; | |
11755 | ||
ee75fd95 | 11756 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
11757 | " branch %lu\n" |
11758 | " toc adjust %lu\n" | |
11759 | " long branch %lu\n" | |
11760 | " long toc adj %lu\n" | |
11761 | " plt call %lu"), | |
e717da7e | 11762 | stub_sec_count, |
ee75fd95 | 11763 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
11764 | htab->stub_count[ppc_stub_long_branch - 1], |
11765 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
11766 | htab->stub_count[ppc_stub_plt_branch - 1], | |
11767 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
11768 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
11769 | } |
11770 | return TRUE; | |
5bd4f169 AM |
11771 | } |
11772 | ||
99877b66 AM |
11773 | /* This function undoes the changes made by add_symbol_adjust. */ |
11774 | ||
11775 | static bfd_boolean | |
11776 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11777 | { | |
11778 | struct ppc_link_hash_entry *eh; | |
11779 | ||
11780 | if (h->root.type == bfd_link_hash_indirect) | |
11781 | return TRUE; | |
11782 | ||
99877b66 AM |
11783 | eh = (struct ppc_link_hash_entry *) h; |
11784 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
11785 | return TRUE; | |
11786 | ||
11787 | eh->elf.root.type = bfd_link_hash_undefined; | |
11788 | return TRUE; | |
11789 | } | |
11790 | ||
11791 | void | |
11792 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
11793 | { | |
11794 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11795 | |
11796 | if (htab != NULL) | |
11797 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
99877b66 AM |
11798 | } |
11799 | ||
60124e18 AM |
11800 | /* What to do when ld finds relocations against symbols defined in |
11801 | discarded sections. */ | |
11802 | ||
11803 | static unsigned int | |
11804 | ppc64_elf_action_discarded (asection *sec) | |
11805 | { | |
11806 | if (strcmp (".opd", sec->name) == 0) | |
11807 | return 0; | |
11808 | ||
11809 | if (strcmp (".toc", sec->name) == 0) | |
11810 | return 0; | |
11811 | ||
bce50a28 JJ |
11812 | if (strcmp (".toc1", sec->name) == 0) |
11813 | return 0; | |
11814 | ||
60124e18 AM |
11815 | return _bfd_elf_default_action_discarded (sec); |
11816 | } | |
11817 | ||
5bd4f169 AM |
11818 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
11819 | to handle the relocations for a section. | |
11820 | ||
11821 | The relocs are always passed as Rela structures; if the section | |
11822 | actually uses Rel structures, the r_addend field will always be | |
11823 | zero. | |
11824 | ||
11825 | This function is responsible for adjust the section contents as | |
11826 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 11827 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
11828 | necessary. |
11829 | ||
11830 | This function does not have to worry about setting the reloc | |
11831 | address or the reloc symbol index. | |
11832 | ||
11833 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
11834 | ||
11835 | LOCAL_SECTIONS is an array giving the section in the input file | |
11836 | corresponding to the st_shndx field of each local symbol. | |
11837 | ||
11838 | The global hash table entry for the global symbols can be found | |
11839 | via elf_sym_hashes (input_bfd). | |
11840 | ||
1049f94e | 11841 | When generating relocatable output, this function must handle |
5bd4f169 AM |
11842 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
11843 | going to be the section symbol corresponding to the output | |
11844 | section, which means that the addend must be adjusted | |
11845 | accordingly. */ | |
11846 | ||
b34976b6 | 11847 | static bfd_boolean |
4ce794b7 AM |
11848 | ppc64_elf_relocate_section (bfd *output_bfd, |
11849 | struct bfd_link_info *info, | |
11850 | bfd *input_bfd, | |
11851 | asection *input_section, | |
11852 | bfd_byte *contents, | |
11853 | Elf_Internal_Rela *relocs, | |
11854 | Elf_Internal_Sym *local_syms, | |
11855 | asection **local_sections) | |
5bd4f169 | 11856 | { |
65f38f15 | 11857 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
11858 | Elf_Internal_Shdr *symtab_hdr; |
11859 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
11860 | Elf_Internal_Rela *rel; |
11861 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
11862 | Elf_Internal_Rela outrel; |
11863 | bfd_byte *loc; | |
411e1bfb | 11864 | struct got_entry **local_got_ents; |
5bd4f169 | 11865 | bfd_vma TOCstart; |
b34976b6 AM |
11866 | bfd_boolean ret = TRUE; |
11867 | bfd_boolean is_opd; | |
96e0dda4 | 11868 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 11869 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 11870 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 11871 | |
65f38f15 | 11872 | /* Initialize howto table if needed. */ |
5bd4f169 | 11873 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
11874 | ppc_howto_init (); |
11875 | ||
65f38f15 | 11876 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11877 | if (htab == NULL) |
11878 | return FALSE; | |
ee75fd95 AM |
11879 | |
11880 | /* Don't relocate stub sections. */ | |
11881 | if (input_section->owner == htab->stub_bfd) | |
11882 | return TRUE; | |
11883 | ||
0c8d6e5c | 11884 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 11885 | |
411e1bfb | 11886 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 11887 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 11888 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 11889 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 11890 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 11891 | |
5bd4f169 AM |
11892 | rel = relocs; |
11893 | relend = relocs + input_section->reloc_count; | |
11894 | for (; rel < relend; rel++) | |
11895 | { | |
04c9666a | 11896 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 11897 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
11898 | bfd_reloc_status_type r; |
11899 | Elf_Internal_Sym *sym; | |
11900 | asection *sec; | |
039b3fef AM |
11901 | struct elf_link_hash_entry *h_elf; |
11902 | struct ppc_link_hash_entry *h; | |
11903 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 11904 | const char *sym_name; |
0d4792f7 | 11905 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 11906 | bfd_vma toc_addend; |
f961d9dd AM |
11907 | unsigned char tls_mask, tls_gd, tls_type; |
11908 | unsigned char sym_type; | |
5bd4f169 | 11909 | bfd_vma relocation; |
b34976b6 AM |
11910 | bfd_boolean unresolved_reloc; |
11911 | bfd_boolean warned; | |
67f0cbdb | 11912 | unsigned int insn; |
e11840f9 | 11913 | unsigned int mask; |
721956f4 AM |
11914 | struct ppc_stub_hash_entry *stub_entry; |
11915 | bfd_vma max_br_offset; | |
11916 | bfd_vma from; | |
5bd4f169 | 11917 | |
4ce794b7 | 11918 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 11919 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
11920 | |
11921 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
11922 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
11923 | proper TOC base to use. */ | |
11924 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
11925 | && rel != relocs | |
11926 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
11927 | && is_opd) | |
11928 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
11929 | ||
4ce794b7 AM |
11930 | sym = NULL; |
11931 | sec = NULL; | |
039b3fef | 11932 | h_elf = NULL; |
4ce794b7 | 11933 | sym_name = NULL; |
b34976b6 AM |
11934 | unresolved_reloc = FALSE; |
11935 | warned = FALSE; | |
4cc603a5 | 11936 | orig_addend = rel->r_addend; |
65f38f15 | 11937 | |
0b13192e | 11938 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
11939 | { |
11940 | /* It's a local symbol. */ | |
74f0fb50 | 11941 | struct _opd_sec_data *opd; |
4025353c | 11942 | |
5bd4f169 AM |
11943 | sym = local_syms + r_symndx; |
11944 | sec = local_sections[r_symndx]; | |
26c61ae5 | 11945 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 11946 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 11947 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
11948 | opd = get_opd_info (sec); |
11949 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 11950 | { |
74f0fb50 | 11951 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
11952 | if (adjust == -1) |
11953 | relocation = 0; | |
11954 | else | |
4cc603a5 AM |
11955 | { |
11956 | /* If this is a relocation against the opd section sym | |
11957 | and we have edited .opd, adjust the reloc addend so | |
11958 | that ld -r and ld --emit-relocs output is correct. | |
11959 | If it is a reloc against some other .opd symbol, | |
11960 | then the symbol value will be adjusted later. */ | |
11961 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
11962 | rel->r_addend += adjust; | |
11963 | else | |
11964 | relocation += adjust; | |
11965 | } | |
1e2f5b6e | 11966 | } |
5bd4f169 AM |
11967 | } |
11968 | else | |
11969 | { | |
b2a8e766 AM |
11970 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
11971 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 11972 | h_elf, sec, relocation, |
b2a8e766 | 11973 | unresolved_reloc, warned); |
039b3fef AM |
11974 | sym_name = h_elf->root.root.string; |
11975 | sym_type = h_elf->type; | |
5bd4f169 | 11976 | } |
039b3fef | 11977 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 11978 | |
ab96bf03 | 11979 | if (sec != NULL && elf_discarded_section (sec)) |
e4067dbb DJ |
11980 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
11981 | rel, relend, | |
11982 | ppc64_elf_howto_table[r_type], | |
11983 | contents); | |
ab96bf03 AM |
11984 | |
11985 | if (info->relocatable) | |
11986 | continue; | |
11987 | ||
951fd09b AM |
11988 | /* TLS optimizations. Replace instruction sequences and relocs |
11989 | based on information we collected in tls_optimize. We edit | |
11990 | RELOCS so that --emit-relocs will output something sensible | |
11991 | for the final instruction stream. */ | |
11992 | tls_mask = 0; | |
11993 | tls_gd = 0; | |
0d4792f7 | 11994 | toc_symndx = 0; |
727fc41e AM |
11995 | if (h != NULL) |
11996 | tls_mask = h->tls_mask; | |
11997 | else if (local_got_ents != NULL) | |
411e1bfb | 11998 | { |
e054468f AM |
11999 | struct plt_entry **local_plt = (struct plt_entry **) |
12000 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 12001 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 12002 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
12003 | tls_mask = lgot_masks[r_symndx]; |
12004 | } | |
12005 | if (tls_mask == 0 | |
12006 | && (r_type == R_PPC64_TLS | |
12007 | || r_type == R_PPC64_TLSGD | |
12008 | || r_type == R_PPC64_TLSLD)) | |
12009 | { | |
12010 | /* Check for toc tls entries. */ | |
f961d9dd | 12011 | unsigned char *toc_tls; |
0d4792f7 | 12012 | |
727fc41e AM |
12013 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12014 | &local_syms, rel, input_bfd)) | |
12015 | return FALSE; | |
0d4792f7 | 12016 | |
727fc41e AM |
12017 | if (toc_tls) |
12018 | tls_mask = *toc_tls; | |
0d4792f7 AM |
12019 | } |
12020 | ||
12021 | /* Check that tls relocs are used with tls syms, and non-tls | |
12022 | relocs are used with non-tls syms. */ | |
cf35638d | 12023 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
12024 | && r_type != R_PPC64_NONE |
12025 | && (h == NULL | |
039b3fef AM |
12026 | || h->elf.root.type == bfd_link_hash_defined |
12027 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
12028 | && (IS_PPC64_TLS_RELOC (r_type) |
12029 | != (sym_type == STT_TLS | |
12030 | || (sym_type == STT_SECTION | |
12031 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 12032 | { |
727fc41e AM |
12033 | if (tls_mask != 0 |
12034 | && (r_type == R_PPC64_TLS | |
12035 | || r_type == R_PPC64_TLSGD | |
12036 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
12037 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
12038 | ; | |
12039 | else | |
25f53a85 | 12040 | info->callbacks->einfo |
1d483afe | 12041 | (!IS_PPC64_TLS_RELOC (r_type) |
8de848d8 AM |
12042 | ? _("%P: %H: %s used with TLS symbol %s\n") |
12043 | : _("%P: %H: %s used with non-TLS symbol %s\n"), | |
25f53a85 | 12044 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
12045 | ppc64_elf_howto_table[r_type]->name, |
12046 | sym_name); | |
411e1bfb AM |
12047 | } |
12048 | ||
12049 | /* Ensure reloc mapping code below stays sane. */ | |
12050 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
12051 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
12052 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
12053 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
12054 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
12055 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
12056 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
12057 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
12058 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
12059 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
12060 | abort (); | |
0d4792f7 | 12061 | |
411e1bfb AM |
12062 | switch (r_type) |
12063 | { | |
12064 | default: | |
411e1bfb AM |
12065 | break; |
12066 | ||
ba761f19 AM |
12067 | case R_PPC64_LO_DS_OPT: |
12068 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
12069 | if ((insn & (0x3f << 26)) != 58u << 26) | |
12070 | abort (); | |
12071 | insn += (14u << 26) - (58u << 26); | |
12072 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
12073 | r_type = R_PPC64_TOC16_LO; | |
12074 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12075 | break; | |
12076 | ||
411e1bfb AM |
12077 | case R_PPC64_TOC16: |
12078 | case R_PPC64_TOC16_LO: | |
12079 | case R_PPC64_TOC16_DS: | |
12080 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
12081 | { |
12082 | /* Check for toc tls entries. */ | |
f961d9dd | 12083 | unsigned char *toc_tls; |
951fd09b | 12084 | int retval; |
411e1bfb | 12085 | |
3a71aa26 AM |
12086 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
12087 | &local_syms, rel, input_bfd); | |
951fd09b | 12088 | if (retval == 0) |
411e1bfb AM |
12089 | return FALSE; |
12090 | ||
12091 | if (toc_tls) | |
12092 | { | |
951fd09b | 12093 | tls_mask = *toc_tls; |
411e1bfb AM |
12094 | if (r_type == R_PPC64_TOC16_DS |
12095 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
12096 | { |
12097 | if (tls_mask != 0 | |
12098 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
12099 | goto toctprel; | |
12100 | } | |
411e1bfb | 12101 | else |
951fd09b AM |
12102 | { |
12103 | /* If we found a GD reloc pair, then we might be | |
12104 | doing a GD->IE transition. */ | |
12105 | if (retval == 2) | |
12106 | { | |
12107 | tls_gd = TLS_TPRELGD; | |
12108 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12109 | goto tls_ldgd_opt; |
951fd09b AM |
12110 | } |
12111 | else if (retval == 3) | |
12112 | { | |
12113 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
102890f0 | 12114 | goto tls_ldgd_opt; |
951fd09b AM |
12115 | } |
12116 | } | |
411e1bfb AM |
12117 | } |
12118 | } | |
12119 | break; | |
12120 | ||
9d6ded02 AM |
12121 | case R_PPC64_GOT_TPREL16_HI: |
12122 | case R_PPC64_GOT_TPREL16_HA: | |
12123 | if (tls_mask != 0 | |
12124 | && (tls_mask & TLS_TPREL) == 0) | |
12125 | { | |
12126 | rel->r_offset -= d_offset; | |
12127 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
12128 | r_type = R_PPC64_NONE; | |
12129 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12130 | } | |
12131 | break; | |
12132 | ||
411e1bfb AM |
12133 | case R_PPC64_GOT_TPREL16_DS: |
12134 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
12135 | if (tls_mask != 0 |
12136 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12137 | { |
81407a69 | 12138 | toctprel: |
4fe5ca5b | 12139 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
12140 | insn &= 31 << 21; |
12141 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 12142 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 12143 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
12144 | if (toc_symndx != 0) |
12145 | { | |
12146 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12147 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12148 | /* We changed the symbol. Start over in order to |
12149 | get h, sym, sec etc. right. */ | |
12150 | rel--; | |
12151 | continue; | |
12152 | } | |
12153 | else | |
12154 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12155 | } |
12156 | break; | |
12157 | ||
12158 | case R_PPC64_TLS: | |
951fd09b AM |
12159 | if (tls_mask != 0 |
12160 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 12161 | { |
411e1bfb | 12162 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
2d0f3896 AM |
12163 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
12164 | if (insn == 0) | |
411e1bfb | 12165 | abort (); |
411e1bfb | 12166 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
411e1bfb | 12167 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
12168 | PPC64_TPREL16_LO which is at low-order half-word. */ |
12169 | rel->r_offset += d_offset; | |
0d4792f7 AM |
12170 | r_type = R_PPC64_TPREL16_LO; |
12171 | if (toc_symndx != 0) | |
12172 | { | |
12173 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 12174 | rel->r_addend = toc_addend; |
0d4792f7 AM |
12175 | /* We changed the symbol. Start over in order to |
12176 | get h, sym, sec etc. right. */ | |
12177 | rel--; | |
12178 | continue; | |
12179 | } | |
12180 | else | |
12181 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
12182 | } |
12183 | break; | |
12184 | ||
411e1bfb AM |
12185 | case R_PPC64_GOT_TLSGD16_HI: |
12186 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
12187 | tls_gd = TLS_TPRELGD; |
12188 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12189 | goto tls_gdld_hi; | |
12190 | break; | |
12191 | ||
411e1bfb AM |
12192 | case R_PPC64_GOT_TLSLD16_HI: |
12193 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12194 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 12195 | { |
951fd09b AM |
12196 | tls_gdld_hi: |
12197 | if ((tls_mask & tls_gd) != 0) | |
12198 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12199 | + R_PPC64_GOT_TPREL16_DS); | |
12200 | else | |
411e1bfb | 12201 | { |
4fe5ca5b | 12202 | rel->r_offset -= d_offset; |
727ac201 | 12203 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
951fd09b | 12204 | r_type = R_PPC64_NONE; |
411e1bfb | 12205 | } |
951fd09b | 12206 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
12207 | } |
12208 | break; | |
12209 | ||
951fd09b AM |
12210 | case R_PPC64_GOT_TLSGD16: |
12211 | case R_PPC64_GOT_TLSGD16_LO: | |
12212 | tls_gd = TLS_TPRELGD; | |
12213 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
102890f0 | 12214 | goto tls_ldgd_opt; |
951fd09b | 12215 | break; |
411e1bfb | 12216 | |
951fd09b AM |
12217 | case R_PPC64_GOT_TLSLD16: |
12218 | case R_PPC64_GOT_TLSLD16_LO: | |
12219 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12220 | { | |
3a71aa26 | 12221 | unsigned int insn1, insn2, insn3; |
102890f0 AM |
12222 | bfd_vma offset; |
12223 | ||
12224 | tls_ldgd_opt: | |
727fc41e AM |
12225 | offset = (bfd_vma) -1; |
12226 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
12227 | __tls_get_addr calls, we must trust that the call | |
12228 | stays with its arg setup insns, ie. that the next | |
12229 | reloc is the __tls_get_addr call associated with | |
12230 | the current reloc. Edit both insns. */ | |
12231 | if (input_section->has_tls_get_addr_call | |
12232 | && rel + 1 < relend | |
12233 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
12234 | htab->tls_get_addr, | |
12235 | htab->tls_get_addr_fd)) | |
12236 | offset = rel[1].r_offset; | |
102890f0 | 12237 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 12238 | { |
102890f0 | 12239 | /* IE */ |
3a71aa26 AM |
12240 | insn1 = bfd_get_32 (output_bfd, |
12241 | contents + rel->r_offset - d_offset); | |
102890f0 AM |
12242 | insn1 &= (1 << 26) - (1 << 2); |
12243 | insn1 |= 58 << 26; /* ld */ | |
12244 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 12245 | if (offset != (bfd_vma) -1) |
f58d5a2d | 12246 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
12247 | if ((tls_mask & TLS_EXPLICIT) == 0) |
12248 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
12249 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 12250 | else |
102890f0 AM |
12251 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
12252 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12253 | } | |
12254 | else | |
12255 | { | |
12256 | /* LE */ | |
12257 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
12258 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12259 | if (tls_gd == 0) | |
951fd09b | 12260 | { |
102890f0 | 12261 | /* Was an LD reloc. */ |
1d483afe AM |
12262 | if (toc_symndx) |
12263 | sec = local_sections[toc_symndx]; | |
12264 | for (r_symndx = 0; | |
12265 | r_symndx < symtab_hdr->sh_info; | |
12266 | r_symndx++) | |
12267 | if (local_sections[r_symndx] == sec) | |
12268 | break; | |
12269 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12270 | r_symndx = STN_UNDEF; |
102890f0 | 12271 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12272 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
12273 | rel->r_addend -= (local_syms[r_symndx].st_value |
12274 | + sec->output_offset | |
12275 | + sec->output_section->vma); | |
951fd09b | 12276 | } |
102890f0 | 12277 | else if (toc_symndx != 0) |
3a71aa26 AM |
12278 | { |
12279 | r_symndx = toc_symndx; | |
12280 | rel->r_addend = toc_addend; | |
12281 | } | |
102890f0 AM |
12282 | r_type = R_PPC64_TPREL16_HA; |
12283 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
12284 | if (offset != (bfd_vma) -1) |
12285 | { | |
12286 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
12287 | R_PPC64_TPREL16_LO); | |
12288 | rel[1].r_offset = offset + d_offset; | |
12289 | rel[1].r_addend = rel->r_addend; | |
12290 | } | |
102890f0 | 12291 | } |
3a71aa26 AM |
12292 | bfd_put_32 (output_bfd, insn1, |
12293 | contents + rel->r_offset - d_offset); | |
727fc41e AM |
12294 | if (offset != (bfd_vma) -1) |
12295 | { | |
12296 | insn3 = bfd_get_32 (output_bfd, | |
12297 | contents + offset + 4); | |
12298 | if (insn3 == NOP | |
12299 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12300 | { | |
12301 | rel[1].r_offset += 4; | |
12302 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12303 | insn2 = NOP; | |
12304 | } | |
12305 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12306 | } | |
12307 | if ((tls_mask & tls_gd) == 0 | |
12308 | && (tls_gd == 0 || toc_symndx != 0)) | |
12309 | { | |
12310 | /* We changed the symbol. Start over in order | |
12311 | to get h, sym, sec etc. right. */ | |
12312 | rel--; | |
12313 | continue; | |
12314 | } | |
12315 | } | |
12316 | break; | |
12317 | ||
12318 | case R_PPC64_TLSGD: | |
12319 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
12320 | { | |
12321 | unsigned int insn2, insn3; | |
12322 | bfd_vma offset = rel->r_offset; | |
12323 | ||
12324 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12325 | { | |
12326 | /* IE */ | |
12327 | r_type = R_PPC64_NONE; | |
12328 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
12329 | } | |
12330 | else | |
12331 | { | |
12332 | /* LE */ | |
12333 | if (toc_symndx != 0) | |
12334 | { | |
12335 | r_symndx = toc_symndx; | |
12336 | rel->r_addend = toc_addend; | |
12337 | } | |
12338 | r_type = R_PPC64_TPREL16_LO; | |
12339 | rel->r_offset = offset + d_offset; | |
12340 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
12341 | } | |
12342 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12343 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12344 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12345 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
3a71aa26 AM |
12346 | insn3 = bfd_get_32 (output_bfd, |
12347 | contents + offset + 4); | |
102890f0 AM |
12348 | if (insn3 == NOP |
12349 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12350 | { | |
727fc41e | 12351 | rel->r_offset += 4; |
3a71aa26 AM |
12352 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
12353 | insn2 = NOP; | |
102890f0 | 12354 | } |
102890f0 | 12355 | bfd_put_32 (output_bfd, insn2, contents + offset); |
727fc41e | 12356 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
102890f0 | 12357 | { |
102890f0 AM |
12358 | rel--; |
12359 | continue; | |
411e1bfb | 12360 | } |
411e1bfb | 12361 | } |
411e1bfb AM |
12362 | break; |
12363 | ||
727fc41e AM |
12364 | case R_PPC64_TLSLD: |
12365 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
12366 | { | |
12367 | unsigned int insn2, insn3; | |
12368 | bfd_vma offset = rel->r_offset; | |
12369 | ||
12370 | if (toc_symndx) | |
12371 | sec = local_sections[toc_symndx]; | |
12372 | for (r_symndx = 0; | |
12373 | r_symndx < symtab_hdr->sh_info; | |
12374 | r_symndx++) | |
12375 | if (local_sections[r_symndx] == sec) | |
12376 | break; | |
12377 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 12378 | r_symndx = STN_UNDEF; |
727fc41e | 12379 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 12380 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
12381 | rel->r_addend -= (local_syms[r_symndx].st_value |
12382 | + sec->output_offset | |
12383 | + sec->output_section->vma); | |
12384 | ||
12385 | r_type = R_PPC64_TPREL16_LO; | |
12386 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12387 | rel->r_offset = offset + d_offset; | |
12388 | /* Zap the reloc on the _tls_get_addr call too. */ | |
12389 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 12390 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e AM |
12391 | insn2 = 0x38630000; /* addi 3,3,0 */ |
12392 | insn3 = bfd_get_32 (output_bfd, | |
12393 | contents + offset + 4); | |
12394 | if (insn3 == NOP | |
12395 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
12396 | { | |
12397 | rel->r_offset += 4; | |
12398 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
12399 | insn2 = NOP; | |
12400 | } | |
12401 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
12402 | rel--; | |
12403 | continue; | |
12404 | } | |
12405 | break; | |
12406 | ||
411e1bfb | 12407 | case R_PPC64_DTPMOD64: |
951fd09b AM |
12408 | if (rel + 1 < relend |
12409 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
12410 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 12411 | { |
951fd09b AM |
12412 | if ((tls_mask & TLS_GD) == 0) |
12413 | { | |
12414 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
12415 | if ((tls_mask & TLS_TPRELGD) != 0) | |
12416 | r_type = R_PPC64_TPREL64; | |
12417 | else | |
12418 | { | |
4ce794b7 | 12419 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
12420 | r_type = R_PPC64_NONE; |
12421 | } | |
12422 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12423 | } | |
12424 | } | |
12425 | else | |
12426 | { | |
12427 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 12428 | { |
4ce794b7 | 12429 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 12430 | r_type = R_PPC64_NONE; |
951fd09b | 12431 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 12432 | } |
411e1bfb AM |
12433 | } |
12434 | break; | |
12435 | ||
12436 | case R_PPC64_TPREL64: | |
951fd09b | 12437 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
12438 | { |
12439 | r_type = R_PPC64_NONE; | |
12440 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
12441 | } | |
12442 | break; | |
12443 | } | |
12444 | ||
12445 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 12446 | insn = 0; |
b25116a9 AM |
12447 | max_br_offset = 1 << 25; |
12448 | addend = rel->r_addend; | |
65f38f15 | 12449 | switch (r_type) |
5bd4f169 AM |
12450 | { |
12451 | default: | |
65f38f15 | 12452 | break; |
5bd4f169 | 12453 | |
3b421ab3 AM |
12454 | case R_PPC64_TOCSAVE: |
12455 | if (relocation + addend == (rel->r_offset | |
12456 | + input_section->output_offset | |
12457 | + input_section->output_section->vma) | |
12458 | && tocsave_find (htab, NO_INSERT, | |
12459 | &local_syms, rel, input_bfd)) | |
12460 | { | |
12461 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
12462 | if (insn == NOP | |
12463 | || insn == CROR_151515 || insn == CROR_313131) | |
12464 | bfd_put_32 (input_bfd, STD_R2_40R1, | |
12465 | contents + rel->r_offset); | |
12466 | } | |
12467 | break; | |
12468 | ||
65f38f15 AM |
12469 | /* Branch taken prediction relocations. */ |
12470 | case R_PPC64_ADDR14_BRTAKEN: | |
12471 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
12472 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
12473 | /* Fall thru. */ | |
65f38f15 | 12474 | |
86c76c7b | 12475 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
12476 | case R_PPC64_ADDR14_BRNTAKEN: |
12477 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
12478 | insn |= bfd_get_32 (output_bfd, |
12479 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 12480 | /* Fall thru. */ |
86c76c7b | 12481 | |
b25116a9 AM |
12482 | case R_PPC64_REL14: |
12483 | max_br_offset = 1 << 15; | |
12484 | /* Fall thru. */ | |
5bd4f169 | 12485 | |
65f38f15 | 12486 | case R_PPC64_REL24: |
ad8e1ba5 AM |
12487 | /* Calls to functions with a different TOC, such as calls to |
12488 | shared objects, need to alter the TOC pointer. This is | |
12489 | done using a linkage stub. A REL24 branching to these | |
12490 | linkage stubs needs to be followed by a nop, as the nop | |
12491 | will be replaced with an instruction to restore the TOC | |
12492 | base pointer. */ | |
8387904d | 12493 | fdh = h; |
b31867b6 AM |
12494 | if (h != NULL |
12495 | && h->oh != NULL | |
12496 | && h->oh->is_func_descriptor) | |
12497 | fdh = ppc_follow_link (h->oh); | |
6abec6bc AM |
12498 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab); |
12499 | if (stub_entry != NULL | |
ad8e1ba5 AM |
12500 | && (stub_entry->stub_type == ppc_stub_plt_call |
12501 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
12502 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 12503 | { |
b25116a9 | 12504 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 12505 | |
eea6121a | 12506 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 12507 | { |
b25116a9 AM |
12508 | unsigned long nop; |
12509 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
12510 | if (nop == NOP | |
12511 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 12512 | { |
a7f2871e AM |
12513 | if (h != NULL |
12514 | && (h == htab->tls_get_addr_fd | |
12515 | || h == htab->tls_get_addr) | |
12516 | && !htab->no_tls_get_addr_opt) | |
12517 | { | |
12518 | /* Special stub used, leave nop alone. */ | |
12519 | } | |
12520 | else | |
12521 | bfd_put_32 (input_bfd, LD_R2_40R1, | |
12522 | contents + rel->r_offset + 4); | |
b25116a9 | 12523 | can_plt_call = TRUE; |
41bd81ab | 12524 | } |
5bd4f169 | 12525 | } |
721956f4 AM |
12526 | |
12527 | if (!can_plt_call) | |
12528 | { | |
ad8e1ba5 AM |
12529 | if (stub_entry->stub_type == ppc_stub_plt_call) |
12530 | { | |
12531 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
12532 | and link, don't require a nop. However, don't |
12533 | allow tail calls in a shared library as they | |
12534 | will result in r2 being corrupted. */ | |
b25116a9 AM |
12535 | unsigned long br; |
12536 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 12537 | if (info->executable && (br & 1) == 0) |
b25116a9 | 12538 | can_plt_call = TRUE; |
15b552e9 AM |
12539 | else |
12540 | stub_entry = NULL; | |
ad8e1ba5 | 12541 | } |
6ab189d5 | 12542 | else if (h != NULL |
039b3fef | 12543 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
12544 | ".__libc_start_main") == 0) |
12545 | { | |
12546 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 12547 | can_plt_call = TRUE; |
6ab189d5 | 12548 | } |
ad8e1ba5 AM |
12549 | else |
12550 | { | |
12551 | if (strcmp (input_section->output_section->name, | |
12552 | ".init") == 0 | |
12553 | || strcmp (input_section->output_section->name, | |
12554 | ".fini") == 0) | |
25f53a85 | 12555 | info->callbacks->einfo |
8de848d8 | 12556 | (_("%P: %H: automatic multiple TOCs " |
ad8e1ba5 | 12557 | "not supported using your crt files; " |
25f53a85 AM |
12558 | "recompile with -mminimal-toc or upgrade gcc\n"), |
12559 | input_bfd, input_section, rel->r_offset); | |
ad8e1ba5 | 12560 | else |
25f53a85 | 12561 | info->callbacks->einfo |
8de848d8 | 12562 | (_("%P: %H: sibling call optimization to `%s' " |
ad8e1ba5 AM |
12563 | "does not allow automatic multiple TOCs; " |
12564 | "recompile with -mminimal-toc or " | |
12565 | "-fno-optimize-sibling-calls, " | |
25f53a85 AM |
12566 | "or make `%s' extern\n"), |
12567 | input_bfd, input_section, rel->r_offset, | |
ad8e1ba5 AM |
12568 | sym_name, |
12569 | sym_name); | |
12570 | bfd_set_error (bfd_error_bad_value); | |
12571 | ret = FALSE; | |
12572 | } | |
721956f4 AM |
12573 | } |
12574 | ||
b25116a9 AM |
12575 | if (can_plt_call |
12576 | && stub_entry->stub_type == ppc_stub_plt_call) | |
12577 | unresolved_reloc = FALSE; | |
12578 | } | |
12579 | ||
6abec6bc AM |
12580 | if ((stub_entry == NULL |
12581 | || stub_entry->stub_type == ppc_stub_long_branch | |
12582 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
12583 | && get_opd_info (sec) != NULL) |
12584 | { | |
12585 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
12586 | bfd_vma off = (relocation + addend |
12587 | - sec->output_section->vma | |
12588 | - sec->output_offset); | |
8387904d AM |
12589 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
12590 | if (dest != (bfd_vma) -1) | |
12591 | { | |
12592 | relocation = dest; | |
12593 | addend = 0; | |
12594 | } | |
12595 | } | |
12596 | ||
b25116a9 AM |
12597 | /* If the branch is out of reach we ought to have a long |
12598 | branch stub. */ | |
12599 | from = (rel->r_offset | |
12600 | + input_section->output_offset | |
12601 | + input_section->output_section->vma); | |
12602 | ||
6abec6bc AM |
12603 | if (stub_entry != NULL |
12604 | && (stub_entry->stub_type == ppc_stub_long_branch | |
12605 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
12606 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
12607 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
12608 | || (relocation + addend - from + max_br_offset | |
12609 | < 2 * max_br_offset))) | |
12610 | /* Don't use the stub if this branch is in range. */ | |
12611 | stub_entry = NULL; | |
b25116a9 AM |
12612 | |
12613 | if (stub_entry != NULL) | |
12614 | { | |
12615 | /* Munge up the value and addend so that we call the stub | |
12616 | rather than the procedure directly. */ | |
12617 | relocation = (stub_entry->stub_offset | |
12618 | + stub_entry->stub_sec->output_offset | |
12619 | + stub_entry->stub_sec->output_section->vma); | |
12620 | addend = 0; | |
3b421ab3 AM |
12621 | |
12622 | if (stub_entry->stub_type == ppc_stub_plt_call | |
12623 | && rel + 1 < relend | |
12624 | && rel[1].r_offset == rel->r_offset + 4 | |
12625 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
12626 | relocation += 4; | |
b25116a9 AM |
12627 | } |
12628 | ||
12629 | if (insn != 0) | |
12630 | { | |
12631 | if (is_power4) | |
721956f4 | 12632 | { |
b25116a9 AM |
12633 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
12634 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
12635 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
12636 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
12637 | insn |= 0x02 << 21; | |
12638 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
12639 | insn |= 0x08 << 21; | |
12640 | else | |
12641 | break; | |
12642 | } | |
12643 | else | |
12644 | { | |
12645 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 12646 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 12647 | insn ^= 0x01 << 21; |
721956f4 | 12648 | } |
b25116a9 AM |
12649 | |
12650 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 12651 | } |
e86ce104 | 12652 | |
06da1e8e AM |
12653 | /* NOP out calls to undefined weak functions. |
12654 | We can thus call a weak function without first | |
12655 | checking whether the function is defined. */ | |
b25116a9 | 12656 | else if (h != NULL |
039b3fef | 12657 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 12658 | && h->elf.dynindx == -1 |
b25116a9 AM |
12659 | && r_type == R_PPC64_REL24 |
12660 | && relocation == 0 | |
4cc603a5 | 12661 | && addend == 0) |
e86ce104 | 12662 | { |
06da1e8e AM |
12663 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
12664 | continue; | |
e86ce104 | 12665 | } |
65f38f15 AM |
12666 | break; |
12667 | } | |
5bd4f169 | 12668 | |
65f38f15 | 12669 | /* Set `addend'. */ |
411e1bfb | 12670 | tls_type = 0; |
65f38f15 AM |
12671 | switch (r_type) |
12672 | { | |
12673 | default: | |
25f53a85 | 12674 | info->callbacks->einfo |
8de848d8 | 12675 | (_("%P: %B: unknown relocation type %d for symbol %s\n"), |
d003868e | 12676 | input_bfd, (int) r_type, sym_name); |
5bd4f169 | 12677 | |
65f38f15 | 12678 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 12679 | ret = FALSE; |
65f38f15 | 12680 | continue; |
5bd4f169 | 12681 | |
65f38f15 | 12682 | case R_PPC64_NONE: |
411e1bfb | 12683 | case R_PPC64_TLS: |
727fc41e AM |
12684 | case R_PPC64_TLSGD: |
12685 | case R_PPC64_TLSLD: | |
3b421ab3 | 12686 | case R_PPC64_TOCSAVE: |
04c9666a AM |
12687 | case R_PPC64_GNU_VTINHERIT: |
12688 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 12689 | continue; |
5bd4f169 AM |
12690 | |
12691 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
12692 | address in the GOT as relocation value instead of the | |
411e1bfb | 12693 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 12694 | symbol and put the symbol value there. */ |
411e1bfb AM |
12695 | case R_PPC64_GOT_TLSGD16: |
12696 | case R_PPC64_GOT_TLSGD16_LO: | |
12697 | case R_PPC64_GOT_TLSGD16_HI: | |
12698 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 12699 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
12700 | goto dogot; |
12701 | ||
12702 | case R_PPC64_GOT_TLSLD16: | |
12703 | case R_PPC64_GOT_TLSLD16_LO: | |
12704 | case R_PPC64_GOT_TLSLD16_HI: | |
12705 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 12706 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
12707 | goto dogot; |
12708 | ||
12709 | case R_PPC64_GOT_TPREL16_DS: | |
12710 | case R_PPC64_GOT_TPREL16_LO_DS: | |
12711 | case R_PPC64_GOT_TPREL16_HI: | |
12712 | case R_PPC64_GOT_TPREL16_HA: | |
12713 | tls_type = TLS_TLS | TLS_TPREL; | |
12714 | goto dogot; | |
12715 | ||
12716 | case R_PPC64_GOT_DTPREL16_DS: | |
12717 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
12718 | case R_PPC64_GOT_DTPREL16_HI: | |
12719 | case R_PPC64_GOT_DTPREL16_HA: | |
12720 | tls_type = TLS_TLS | TLS_DTPREL; | |
12721 | goto dogot; | |
12722 | ||
65f38f15 AM |
12723 | case R_PPC64_GOT16: |
12724 | case R_PPC64_GOT16_LO: | |
12725 | case R_PPC64_GOT16_HI: | |
12726 | case R_PPC64_GOT16_HA: | |
12727 | case R_PPC64_GOT16_DS: | |
12728 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 12729 | dogot: |
5bd4f169 AM |
12730 | { |
12731 | /* Relocation is to the entry for this symbol in the global | |
12732 | offset table. */ | |
e717da7e | 12733 | asection *got; |
d881513a | 12734 | bfd_vma *offp; |
5bd4f169 | 12735 | bfd_vma off; |
d881513a | 12736 | unsigned long indx = 0; |
927be08e | 12737 | struct got_entry *ent; |
65f38f15 | 12738 | |
d881513a AM |
12739 | if (tls_type == (TLS_TLS | TLS_LD) |
12740 | && (h == NULL | |
f5385ebf | 12741 | || !h->elf.def_dynamic)) |
927be08e | 12742 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 12743 | else |
5bd4f169 | 12744 | { |
5bd4f169 | 12745 | |
d881513a AM |
12746 | if (h != NULL) |
12747 | { | |
12748 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
12749 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
12750 | &h->elf) | |
d881513a | 12751 | || (info->shared |
726d3ab0 | 12752 | && SYMBOL_CALLS_LOCAL (info, &h->elf))) |
d881513a AM |
12753 | /* This is actually a static link, or it is a |
12754 | -Bsymbolic link and the symbol is defined | |
12755 | locally, or the symbol was forced to be local | |
12756 | because of a version file. */ | |
12757 | ; | |
12758 | else | |
12759 | { | |
039b3fef | 12760 | indx = h->elf.dynindx; |
d881513a AM |
12761 | unresolved_reloc = FALSE; |
12762 | } | |
039b3fef | 12763 | ent = h->elf.got.glist; |
d881513a | 12764 | } |
411e1bfb | 12765 | else |
5bd4f169 | 12766 | { |
d881513a AM |
12767 | if (local_got_ents == NULL) |
12768 | abort (); | |
12769 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 12770 | } |
d881513a AM |
12771 | |
12772 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 12773 | if (ent->addend == orig_addend |
e717da7e | 12774 | && ent->owner == input_bfd |
d881513a AM |
12775 | && ent->tls_type == tls_type) |
12776 | break; | |
5bd4f169 | 12777 | } |
411e1bfb | 12778 | |
927be08e AM |
12779 | if (ent == NULL) |
12780 | abort (); | |
12781 | if (ent->is_indirect) | |
12782 | ent = ent->got.ent; | |
12783 | offp = &ent->got.offset; | |
12784 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
12785 | if (got == NULL) |
12786 | abort (); | |
12787 | ||
411e1bfb AM |
12788 | /* The offset must always be a multiple of 8. We use the |
12789 | least significant bit to record whether we have already | |
12790 | processed this entry. */ | |
d881513a | 12791 | off = *offp; |
411e1bfb AM |
12792 | if ((off & 1) != 0) |
12793 | off &= ~1; | |
5bd4f169 AM |
12794 | else |
12795 | { | |
411e1bfb AM |
12796 | /* Generate relocs for the dynamic linker, except in |
12797 | the case of TLSLD where we'll use one entry per | |
12798 | module. */ | |
25f23106 AM |
12799 | asection *relgot; |
12800 | bfd_boolean ifunc; | |
e717da7e | 12801 | |
d881513a | 12802 | *offp = off | 1; |
25f23106 AM |
12803 | relgot = NULL; |
12804 | ifunc = (h != NULL | |
12805 | ? h->elf.type == STT_GNU_IFUNC | |
12806 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
4e795f50 | 12807 | if ((info->shared || indx != 0) |
927be08e AM |
12808 | && (h == NULL |
12809 | || (tls_type == (TLS_TLS | TLS_LD) | |
12810 | && !h->elf.def_dynamic) | |
039b3fef AM |
12811 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
12812 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
927be08e | 12813 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 AM |
12814 | else if (ifunc) |
12815 | relgot = htab->reliplt; | |
12816 | if (relgot != NULL) | |
5bd4f169 | 12817 | { |
e717da7e AM |
12818 | outrel.r_offset = (got->output_section->vma |
12819 | + got->output_offset | |
411e1bfb | 12820 | + off); |
4cc603a5 | 12821 | outrel.r_addend = addend; |
d881513a | 12822 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 12823 | { |
411e1bfb | 12824 | outrel.r_addend = 0; |
e515b051 | 12825 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
12826 | if (tls_type == (TLS_TLS | TLS_GD)) |
12827 | { | |
e717da7e AM |
12828 | loc = relgot->contents; |
12829 | loc += (relgot->reloc_count++ | |
d881513a AM |
12830 | * sizeof (Elf64_External_Rela)); |
12831 | bfd_elf64_swap_reloca_out (output_bfd, | |
12832 | &outrel, loc); | |
e515b051 | 12833 | outrel.r_offset += 8; |
4cc603a5 | 12834 | outrel.r_addend = addend; |
d881513a AM |
12835 | outrel.r_info |
12836 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 12837 | } |
411e1bfb | 12838 | } |
951fd09b | 12839 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 12840 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 12841 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12842 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
12843 | else if (indx != 0) |
12844 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
12845 | else | |
81407a69 | 12846 | { |
25f23106 AM |
12847 | if (ifunc) |
12848 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
12849 | else | |
12850 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
12851 | |
12852 | /* Write the .got section contents for the sake | |
12853 | of prelink. */ | |
e717da7e | 12854 | loc = got->contents + off; |
23fbd6fa JJ |
12855 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
12856 | loc); | |
81407a69 | 12857 | } |
81407a69 AM |
12858 | |
12859 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
12860 | { |
12861 | outrel.r_addend += relocation; | |
12862 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 12863 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 12864 | } |
e717da7e AM |
12865 | loc = relgot->contents; |
12866 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
12867 | * sizeof (Elf64_External_Rela)); |
12868 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
12869 | } | |
12870 | ||
ad8e1ba5 | 12871 | /* Init the .got section contents here if we're not |
81407a69 | 12872 | emitting a reloc. */ |
d881513a | 12873 | else |
411e1bfb | 12874 | { |
4cc603a5 | 12875 | relocation += addend; |
7b609f53 AM |
12876 | if (tls_type == (TLS_TLS | TLS_LD)) |
12877 | relocation = 1; | |
12878 | else if (tls_type != 0) | |
411e1bfb | 12879 | { |
e1918d23 | 12880 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 12881 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 12882 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 12883 | |
7b609f53 AM |
12884 | if (tls_type == (TLS_TLS | TLS_GD)) |
12885 | { | |
12886 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 12887 | got->contents + off + 8); |
7b609f53 AM |
12888 | relocation = 1; |
12889 | } | |
411e1bfb | 12890 | } |
7b609f53 | 12891 | |
411e1bfb | 12892 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 12893 | got->contents + off); |
5bd4f169 AM |
12894 | } |
12895 | } | |
12896 | ||
65f38f15 AM |
12897 | if (off >= (bfd_vma) -2) |
12898 | abort (); | |
12899 | ||
bf102f86 AM |
12900 | relocation = got->output_section->vma + got->output_offset + off; |
12901 | addend = -(TOCstart + htab->stub_group[input_section->id].toc_off); | |
5bd4f169 | 12902 | } |
65f38f15 AM |
12903 | break; |
12904 | ||
12905 | case R_PPC64_PLT16_HA: | |
12906 | case R_PPC64_PLT16_HI: | |
12907 | case R_PPC64_PLT16_LO: | |
12908 | case R_PPC64_PLT32: | |
12909 | case R_PPC64_PLT64: | |
12910 | /* Relocation is to the entry for this symbol in the | |
12911 | procedure linkage table. */ | |
12912 | ||
12913 | /* Resolve a PLT reloc against a local symbol directly, | |
12914 | without using the procedure linkage table. */ | |
12915 | if (h == NULL) | |
12916 | break; | |
12917 | ||
411e1bfb AM |
12918 | /* It's possible that we didn't make a PLT entry for this |
12919 | symbol. This happens when statically linking PIC code, | |
12920 | or when using -Bsymbolic. Go find a match if there is a | |
12921 | PLT entry. */ | |
4ce794b7 | 12922 | if (htab->plt != NULL) |
65f38f15 | 12923 | { |
411e1bfb | 12924 | struct plt_entry *ent; |
039b3fef | 12925 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 12926 | if (ent->addend == orig_addend |
411e1bfb AM |
12927 | && ent->plt.offset != (bfd_vma) -1) |
12928 | { | |
4ce794b7 AM |
12929 | relocation = (htab->plt->output_section->vma |
12930 | + htab->plt->output_offset | |
411e1bfb AM |
12931 | + ent->plt.offset); |
12932 | unresolved_reloc = FALSE; | |
12933 | } | |
65f38f15 | 12934 | } |
65f38f15 | 12935 | break; |
5bd4f169 | 12936 | |
0b13192e AM |
12937 | case R_PPC64_TOC: |
12938 | /* Relocation value is TOC base. */ | |
12939 | relocation = TOCstart; | |
cf35638d | 12940 | if (r_symndx == STN_UNDEF) |
0b13192e | 12941 | relocation += htab->stub_group[input_section->id].toc_off; |
8517fae7 AM |
12942 | else if (unresolved_reloc) |
12943 | ; | |
12944 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
12945 | relocation += htab->stub_group[sec->id].toc_off; |
12946 | else | |
12947 | unresolved_reloc = TRUE; | |
ab96bf03 | 12948 | goto dodyn; |
0b13192e | 12949 | |
5bd4f169 AM |
12950 | /* TOC16 relocs. We want the offset relative to the TOC base, |
12951 | which is the address of the start of the TOC plus 0x8000. | |
12952 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
12953 | in this order. */ | |
65f38f15 AM |
12954 | case R_PPC64_TOC16: |
12955 | case R_PPC64_TOC16_LO: | |
12956 | case R_PPC64_TOC16_HI: | |
12957 | case R_PPC64_TOC16_DS: | |
12958 | case R_PPC64_TOC16_LO_DS: | |
12959 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 12960 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
12961 | break; |
12962 | ||
12963 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
12964 | case R_PPC64_SECTOFF: |
12965 | case R_PPC64_SECTOFF_LO: | |
12966 | case R_PPC64_SECTOFF_HI: | |
12967 | case R_PPC64_SECTOFF_DS: | |
12968 | case R_PPC64_SECTOFF_LO_DS: | |
12969 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 12970 | if (sec != NULL) |
65f38f15 | 12971 | addend -= sec->output_section->vma; |
5bd4f169 AM |
12972 | break; |
12973 | ||
25f23106 AM |
12974 | case R_PPC64_REL16: |
12975 | case R_PPC64_REL16_LO: | |
12976 | case R_PPC64_REL16_HI: | |
12977 | case R_PPC64_REL16_HA: | |
12978 | break; | |
12979 | ||
721956f4 AM |
12980 | case R_PPC64_REL14: |
12981 | case R_PPC64_REL14_BRNTAKEN: | |
12982 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
12983 | case R_PPC64_REL24: |
12984 | break; | |
12985 | ||
411e1bfb AM |
12986 | case R_PPC64_TPREL16: |
12987 | case R_PPC64_TPREL16_LO: | |
12988 | case R_PPC64_TPREL16_HI: | |
12989 | case R_PPC64_TPREL16_HA: | |
12990 | case R_PPC64_TPREL16_DS: | |
12991 | case R_PPC64_TPREL16_LO_DS: | |
12992 | case R_PPC64_TPREL16_HIGHER: | |
12993 | case R_PPC64_TPREL16_HIGHERA: | |
12994 | case R_PPC64_TPREL16_HIGHEST: | |
12995 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
12996 | if (h != NULL |
12997 | && h->elf.root.type == bfd_link_hash_undefweak | |
12998 | && h->elf.dynindx == -1) | |
12999 | { | |
13000 | /* Make this relocation against an undefined weak symbol | |
13001 | resolve to zero. This is really just a tweak, since | |
13002 | code using weak externs ought to check that they are | |
13003 | defined before using them. */ | |
13004 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
13005 | ||
13006 | insn = bfd_get_32 (output_bfd, p); | |
13007 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
13008 | if (insn != 0) | |
13009 | bfd_put_32 (output_bfd, insn, p); | |
13010 | break; | |
13011 | } | |
e1918d23 | 13012 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13013 | if (info->shared) |
13014 | /* The TPREL16 relocs shouldn't really be used in shared | |
13015 | libs as they will result in DT_TEXTREL being set, but | |
13016 | support them anyway. */ | |
13017 | goto dodyn; | |
13018 | break; | |
13019 | ||
13020 | case R_PPC64_DTPREL16: | |
13021 | case R_PPC64_DTPREL16_LO: | |
13022 | case R_PPC64_DTPREL16_HI: | |
13023 | case R_PPC64_DTPREL16_HA: | |
13024 | case R_PPC64_DTPREL16_DS: | |
13025 | case R_PPC64_DTPREL16_LO_DS: | |
13026 | case R_PPC64_DTPREL16_HIGHER: | |
13027 | case R_PPC64_DTPREL16_HIGHERA: | |
13028 | case R_PPC64_DTPREL16_HIGHEST: | |
13029 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 13030 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13031 | break; |
13032 | ||
e515b051 AM |
13033 | case R_PPC64_DTPMOD64: |
13034 | relocation = 1; | |
13035 | addend = 0; | |
13036 | goto dodyn; | |
13037 | ||
411e1bfb | 13038 | case R_PPC64_TPREL64: |
e1918d23 | 13039 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
13040 | goto dodyn; |
13041 | ||
13042 | case R_PPC64_DTPREL64: | |
e1918d23 | 13043 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
13044 | /* Fall thru */ |
13045 | ||
65f38f15 AM |
13046 | /* Relocations that may need to be propagated if this is a |
13047 | dynamic object. */ | |
04c9666a | 13048 | case R_PPC64_REL30: |
65f38f15 AM |
13049 | case R_PPC64_REL32: |
13050 | case R_PPC64_REL64: | |
13051 | case R_PPC64_ADDR14: | |
13052 | case R_PPC64_ADDR14_BRNTAKEN: | |
13053 | case R_PPC64_ADDR14_BRTAKEN: | |
13054 | case R_PPC64_ADDR16: | |
13055 | case R_PPC64_ADDR16_DS: | |
13056 | case R_PPC64_ADDR16_HA: | |
13057 | case R_PPC64_ADDR16_HI: | |
13058 | case R_PPC64_ADDR16_HIGHER: | |
13059 | case R_PPC64_ADDR16_HIGHERA: | |
13060 | case R_PPC64_ADDR16_HIGHEST: | |
13061 | case R_PPC64_ADDR16_HIGHESTA: | |
13062 | case R_PPC64_ADDR16_LO: | |
13063 | case R_PPC64_ADDR16_LO_DS: | |
13064 | case R_PPC64_ADDR24: | |
65f38f15 AM |
13065 | case R_PPC64_ADDR32: |
13066 | case R_PPC64_ADDR64: | |
13067 | case R_PPC64_UADDR16: | |
13068 | case R_PPC64_UADDR32: | |
13069 | case R_PPC64_UADDR64: | |
411e1bfb | 13070 | dodyn: |
5d1634d7 | 13071 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
13072 | break; |
13073 | ||
41bd81ab AM |
13074 | if (NO_OPD_RELOCS && is_opd) |
13075 | break; | |
13076 | ||
65f38f15 | 13077 | if ((info->shared |
4e795f50 | 13078 | && (h == NULL |
039b3fef AM |
13079 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
13080 | || h->elf.root.type != bfd_link_hash_undefweak) | |
1d483afe | 13081 | && (must_be_dyn_reloc (info, r_type) |
039b3fef | 13082 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
13083 | || (ELIMINATE_COPY_RELOCS |
13084 | && !info->shared | |
65f38f15 | 13085 | && h != NULL |
039b3fef | 13086 | && h->elf.dynindx != -1 |
f5385ebf | 13087 | && !h->elf.non_got_ref |
25f23106 AM |
13088 | && !h->elf.def_regular) |
13089 | || (!info->shared | |
13090 | && (h != NULL | |
13091 | ? h->elf.type == STT_GNU_IFUNC | |
13092 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
65f38f15 | 13093 | { |
b34976b6 | 13094 | bfd_boolean skip, relocate; |
65f38f15 | 13095 | asection *sreloc; |
1cf1f670 | 13096 | bfd_vma out_off; |
65f38f15 AM |
13097 | |
13098 | /* When generating a dynamic object, these relocations | |
13099 | are copied into the output file to be resolved at run | |
13100 | time. */ | |
13101 | ||
b34976b6 AM |
13102 | skip = FALSE; |
13103 | relocate = FALSE; | |
65f38f15 | 13104 | |
1cf1f670 AM |
13105 | out_off = _bfd_elf_section_offset (output_bfd, info, |
13106 | input_section, rel->r_offset); | |
13107 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 13108 | skip = TRUE; |
1cf1f670 | 13109 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 13110 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
13111 | out_off += (input_section->output_section->vma |
13112 | + input_section->output_offset); | |
13113 | outrel.r_offset = out_off; | |
411e1bfb | 13114 | outrel.r_addend = rel->r_addend; |
65f38f15 | 13115 | |
1cf1f670 AM |
13116 | /* Optimize unaligned reloc use. */ |
13117 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
13118 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
13119 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
13120 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
13121 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
13122 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
13123 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
13124 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
13125 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
13126 | ||
65f38f15 | 13127 | if (skip) |
0bb2d96a | 13128 | memset (&outrel, 0, sizeof outrel); |
726d3ab0 | 13129 | else if (!SYMBOL_CALLS_LOCAL (info, &h->elf) |
0b13192e AM |
13130 | && !is_opd |
13131 | && r_type != R_PPC64_TOC) | |
039b3fef | 13132 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
13133 | else |
13134 | { | |
41bd81ab AM |
13135 | /* This symbol is local, or marked to become local, |
13136 | or this is an opd section reloc which must point | |
13137 | at a local function. */ | |
65f38f15 | 13138 | outrel.r_addend += relocation; |
e86ce104 | 13139 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 13140 | { |
3fad3c7c | 13141 | if (is_opd && h != NULL) |
afbe61cf AM |
13142 | { |
13143 | /* Lie about opd entries. This case occurs | |
13144 | when building shared libraries and we | |
13145 | reference a function in another shared | |
3fad3c7c AM |
13146 | lib. The same thing happens for a weak |
13147 | definition in an application that's | |
13148 | overridden by a strong definition in a | |
13149 | shared lib. (I believe this is a generic | |
13150 | bug in binutils handling of weak syms.) | |
13151 | In these cases we won't use the opd | |
1e2f5b6e | 13152 | entry in this lib. */ |
b34976b6 | 13153 | unresolved_reloc = FALSE; |
afbe61cf | 13154 | } |
25f23106 AM |
13155 | if (!is_opd |
13156 | && r_type == R_PPC64_ADDR64 | |
13157 | && (h != NULL | |
13158 | ? h->elf.type == STT_GNU_IFUNC | |
13159 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
13160 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13161 | else | |
13162 | { | |
13163 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 13164 | |
25f23106 AM |
13165 | /* We need to relocate .opd contents for ld.so. |
13166 | Prelink also wants simple and consistent rules | |
13167 | for relocs. This make all RELATIVE relocs have | |
13168 | *r_offset equal to r_addend. */ | |
13169 | relocate = TRUE; | |
13170 | } | |
65f38f15 AM |
13171 | } |
13172 | else | |
13173 | { | |
13174 | long indx = 0; | |
13175 | ||
25f23106 AM |
13176 | if (h != NULL |
13177 | ? h->elf.type == STT_GNU_IFUNC | |
13178 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13179 | { | |
25f53a85 | 13180 | info->callbacks->einfo |
8de848d8 | 13181 | (_("%P: %H: relocation %s for indirect " |
25f53a85 AM |
13182 | "function %s unsupported\n"), |
13183 | input_bfd, input_section, rel->r_offset, | |
25f23106 AM |
13184 | ppc64_elf_howto_table[r_type]->name, |
13185 | sym_name); | |
13186 | ret = FALSE; | |
13187 | } | |
cf35638d | 13188 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
13189 | ; |
13190 | else if (sec == NULL || sec->owner == NULL) | |
13191 | { | |
13192 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 13193 | return FALSE; |
65f38f15 AM |
13194 | } |
13195 | else | |
13196 | { | |
13197 | asection *osec; | |
13198 | ||
13199 | osec = sec->output_section; | |
13200 | indx = elf_section_data (osec)->dynindx; | |
13201 | ||
74541ad4 AM |
13202 | if (indx == 0) |
13203 | { | |
13204 | if ((osec->flags & SEC_READONLY) == 0 | |
13205 | && htab->elf.data_index_section != NULL) | |
13206 | osec = htab->elf.data_index_section; | |
13207 | else | |
13208 | osec = htab->elf.text_index_section; | |
13209 | indx = elf_section_data (osec)->dynindx; | |
13210 | } | |
13211 | BFD_ASSERT (indx != 0); | |
13212 | ||
65f38f15 AM |
13213 | /* We are turning this relocation into one |
13214 | against a section symbol, so subtract out | |
13215 | the output section's address but not the | |
13216 | offset of the input section in the output | |
13217 | section. */ | |
13218 | outrel.r_addend -= osec->vma; | |
13219 | } | |
13220 | ||
13221 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
13222 | } | |
13223 | } | |
13224 | ||
13225 | sreloc = elf_section_data (input_section)->sreloc; | |
25f23106 AM |
13226 | if (!htab->elf.dynamic_sections_created) |
13227 | sreloc = htab->reliplt; | |
65f38f15 AM |
13228 | if (sreloc == NULL) |
13229 | abort (); | |
13230 | ||
dfbb6ac9 AM |
13231 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
13232 | >= sreloc->size) | |
13233 | abort (); | |
947216bf AM |
13234 | loc = sreloc->contents; |
13235 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
13236 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
13237 | ||
13238 | /* If this reloc is against an external symbol, it will | |
13239 | be computed at runtime, so there's no need to do | |
81407a69 AM |
13240 | anything now. However, for the sake of prelink ensure |
13241 | that the section contents are a known value. */ | |
65f38f15 | 13242 | if (! relocate) |
81407a69 AM |
13243 | { |
13244 | unresolved_reloc = FALSE; | |
13245 | /* The value chosen here is quite arbitrary as ld.so | |
13246 | ignores section contents except for the special | |
13247 | case of .opd where the contents might be accessed | |
13248 | before relocation. Choose zero, as that won't | |
13249 | cause reloc overflow. */ | |
13250 | relocation = 0; | |
13251 | addend = 0; | |
13252 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
13253 | to improve backward compatibility with older | |
13254 | versions of ld. */ | |
13255 | if (r_type == R_PPC64_ADDR64) | |
13256 | addend = outrel.r_addend; | |
13257 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 13258 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
13259 | addend = (input_section->output_section->vma |
13260 | + input_section->output_offset | |
13261 | + rel->r_offset); | |
81407a69 | 13262 | } |
65f38f15 | 13263 | } |
5bd4f169 AM |
13264 | break; |
13265 | ||
65f38f15 AM |
13266 | case R_PPC64_COPY: |
13267 | case R_PPC64_GLOB_DAT: | |
13268 | case R_PPC64_JMP_SLOT: | |
25f23106 | 13269 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
13270 | case R_PPC64_RELATIVE: |
13271 | /* We shouldn't ever see these dynamic relocs in relocatable | |
13272 | files. */ | |
ae9a127f | 13273 | /* Fall through. */ |
65f38f15 AM |
13274 | |
13275 | case R_PPC64_PLTGOT16: | |
13276 | case R_PPC64_PLTGOT16_DS: | |
13277 | case R_PPC64_PLTGOT16_HA: | |
13278 | case R_PPC64_PLTGOT16_HI: | |
13279 | case R_PPC64_PLTGOT16_LO: | |
13280 | case R_PPC64_PLTGOT16_LO_DS: | |
13281 | case R_PPC64_PLTREL32: | |
13282 | case R_PPC64_PLTREL64: | |
13283 | /* These ones haven't been implemented yet. */ | |
13284 | ||
25f53a85 | 13285 | info->callbacks->einfo |
8de848d8 | 13286 | (_("%P: %B: relocation %s is not supported for symbol %s\n"), |
d003868e | 13287 | input_bfd, |
4ce794b7 | 13288 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
13289 | |
13290 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 13291 | ret = FALSE; |
5bd4f169 | 13292 | continue; |
65f38f15 | 13293 | } |
5bd4f169 | 13294 | |
67f0cbdb AM |
13295 | /* Multi-instruction sequences that access the TOC can be |
13296 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
13297 | to nop; addi rb,r2,x; */ | |
13298 | switch (r_type) | |
13299 | { | |
13300 | default: | |
13301 | break; | |
13302 | ||
13303 | case R_PPC64_GOT_TLSLD16_HI: | |
13304 | case R_PPC64_GOT_TLSGD16_HI: | |
13305 | case R_PPC64_GOT_TPREL16_HI: | |
13306 | case R_PPC64_GOT_DTPREL16_HI: | |
13307 | case R_PPC64_GOT16_HI: | |
13308 | case R_PPC64_TOC16_HI: | |
13309 | /* These relocs would only be useful if building up an | |
13310 | offset to later add to r2, perhaps in an indexed | |
13311 | addressing mode instruction. Don't try to optimize. | |
13312 | Unfortunately, the possibility of someone building up an | |
13313 | offset like this or even with the HA relocs, means that | |
13314 | we need to check the high insn when optimizing the low | |
13315 | insn. */ | |
13316 | break; | |
13317 | ||
13318 | case R_PPC64_GOT_TLSLD16_HA: | |
13319 | case R_PPC64_GOT_TLSGD16_HA: | |
13320 | case R_PPC64_GOT_TPREL16_HA: | |
13321 | case R_PPC64_GOT_DTPREL16_HA: | |
13322 | case R_PPC64_GOT16_HA: | |
13323 | case R_PPC64_TOC16_HA: | |
98528052 AM |
13324 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
13325 | && !ppc64_elf_tdata (input_bfd)->ha_relocs_not_using_r2) | |
13326 | { | |
13327 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13328 | bfd_put_32 (input_bfd, NOP, p); | |
13329 | } | |
67f0cbdb AM |
13330 | break; |
13331 | ||
13332 | case R_PPC64_GOT_TLSLD16_LO: | |
13333 | case R_PPC64_GOT_TLSGD16_LO: | |
13334 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13335 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13336 | case R_PPC64_GOT16_LO: | |
13337 | case R_PPC64_GOT16_LO_DS: | |
13338 | case R_PPC64_TOC16_LO: | |
13339 | case R_PPC64_TOC16_LO_DS: | |
98528052 AM |
13340 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
13341 | && !ppc64_elf_tdata (input_bfd)->ha_relocs_not_using_r2) | |
67f0cbdb AM |
13342 | { |
13343 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
13344 | insn = bfd_get_32 (input_bfd, p); | |
13345 | if ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
13346 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
13347 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
13348 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
13349 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
13350 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
13351 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
13352 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
13353 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
13354 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
13355 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
13356 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
13357 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
13358 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
13359 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
13360 | && (insn & 3) != 1) | |
13361 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
13362 | && ((insn & 3) == 0 || (insn & 3) == 3))) | |
13363 | { | |
98528052 AM |
13364 | insn &= ~(0x1f << 16); |
13365 | insn |= 2 << 16; | |
13366 | bfd_put_32 (input_bfd, insn, p); | |
67f0cbdb AM |
13367 | } |
13368 | } | |
13369 | break; | |
13370 | } | |
13371 | ||
65f38f15 AM |
13372 | /* Do any further special processing. */ |
13373 | switch (r_type) | |
13374 | { | |
13375 | default: | |
13376 | break; | |
13377 | ||
13378 | case R_PPC64_ADDR16_HA: | |
25f23106 | 13379 | case R_PPC64_REL16_HA: |
65f38f15 AM |
13380 | case R_PPC64_ADDR16_HIGHERA: |
13381 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
13382 | case R_PPC64_TOC16_HA: |
13383 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
13384 | case R_PPC64_TPREL16_HA: |
13385 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
13386 | case R_PPC64_TPREL16_HIGHER: |
13387 | case R_PPC64_TPREL16_HIGHERA: | |
13388 | case R_PPC64_TPREL16_HIGHEST: | |
13389 | case R_PPC64_TPREL16_HIGHESTA: | |
13390 | case R_PPC64_DTPREL16_HIGHER: | |
13391 | case R_PPC64_DTPREL16_HIGHERA: | |
13392 | case R_PPC64_DTPREL16_HIGHEST: | |
13393 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
13394 | /* It's just possible that this symbol is a weak symbol |
13395 | that's not actually defined anywhere. In that case, | |
13396 | 'sec' would be NULL, and we should leave the symbol | |
13397 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
13398 | if (sec == NULL) |
13399 | break; | |
13400 | /* Fall thru */ | |
13401 | ||
13402 | case R_PPC64_GOT16_HA: | |
13403 | case R_PPC64_PLTGOT16_HA: | |
13404 | case R_PPC64_PLT16_HA: | |
13405 | case R_PPC64_GOT_TLSGD16_HA: | |
13406 | case R_PPC64_GOT_TLSLD16_HA: | |
13407 | case R_PPC64_GOT_TPREL16_HA: | |
13408 | case R_PPC64_GOT_DTPREL16_HA: | |
13409 | /* Add 0x10000 if sign bit in 0:15 is set. | |
13410 | Bits 0:15 are not used. */ | |
13411 | addend += 0x8000; | |
65f38f15 AM |
13412 | break; |
13413 | ||
13414 | case R_PPC64_ADDR16_DS: | |
13415 | case R_PPC64_ADDR16_LO_DS: | |
13416 | case R_PPC64_GOT16_DS: | |
13417 | case R_PPC64_GOT16_LO_DS: | |
13418 | case R_PPC64_PLT16_LO_DS: | |
13419 | case R_PPC64_SECTOFF_DS: | |
13420 | case R_PPC64_SECTOFF_LO_DS: | |
13421 | case R_PPC64_TOC16_DS: | |
13422 | case R_PPC64_TOC16_LO_DS: | |
13423 | case R_PPC64_PLTGOT16_DS: | |
13424 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
13425 | case R_PPC64_GOT_TPREL16_DS: |
13426 | case R_PPC64_GOT_TPREL16_LO_DS: | |
13427 | case R_PPC64_GOT_DTPREL16_DS: | |
13428 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
13429 | case R_PPC64_TPREL16_DS: | |
13430 | case R_PPC64_TPREL16_LO_DS: | |
13431 | case R_PPC64_DTPREL16_DS: | |
13432 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
13433 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
13434 | mask = 3; | |
13435 | /* If this reloc is against an lq insn, then the value must be | |
13436 | a multiple of 16. This is somewhat of a hack, but the | |
13437 | "correct" way to do this by defining _DQ forms of all the | |
13438 | _DS relocs bloats all reloc switches in this file. It | |
13439 | doesn't seem to make much sense to use any of these relocs | |
13440 | in data, so testing the insn should be safe. */ | |
494dac0c | 13441 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
13442 | mask = 15; |
13443 | if (((relocation + addend) & mask) != 0) | |
65f38f15 | 13444 | { |
25f53a85 | 13445 | info->callbacks->einfo |
8de848d8 | 13446 | (_("%P: %H: error: %s not a multiple of %u\n"), |
25f53a85 | 13447 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 13448 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 13449 | mask + 1); |
65f38f15 | 13450 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 13451 | ret = FALSE; |
65f38f15 AM |
13452 | continue; |
13453 | } | |
13454 | break; | |
5bd4f169 AM |
13455 | } |
13456 | ||
239e1f3a AM |
13457 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
13458 | because such sections are not SEC_ALLOC and thus ld.so will | |
13459 | not process them. */ | |
65f38f15 | 13460 | if (unresolved_reloc |
239e1f3a | 13461 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 13462 | && h->elf.def_dynamic)) |
9c07fe7c | 13463 | { |
25f53a85 | 13464 | info->callbacks->einfo |
8de848d8 | 13465 | (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"), |
25f53a85 | 13466 | input_bfd, input_section, rel->r_offset, |
7b609f53 | 13467 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 13468 | h->elf.root.root.string); |
b34976b6 | 13469 | ret = FALSE; |
9c07fe7c | 13470 | } |
5bd4f169 | 13471 | |
65f38f15 | 13472 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
13473 | input_bfd, |
13474 | input_section, | |
13475 | contents, | |
411e1bfb | 13476 | rel->r_offset, |
5bd4f169 AM |
13477 | relocation, |
13478 | addend); | |
13479 | ||
ef60b7ff | 13480 | if (r != bfd_reloc_ok) |
5bd4f169 | 13481 | { |
cd27b276 AM |
13482 | if (sym_name == NULL) |
13483 | sym_name = "(null)"; | |
13484 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 13485 | { |
cd27b276 AM |
13486 | if (warned) |
13487 | continue; | |
13488 | if (h != NULL | |
039b3fef | 13489 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 13490 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
13491 | { |
13492 | /* Assume this is a call protected by other code that | |
13493 | detects the symbol is undefined. If this is the case, | |
13494 | we can safely ignore the overflow. If not, the | |
13495 | program is hosed anyway, and a little warning isn't | |
13496 | going to help. */ | |
13497 | ||
13498 | continue; | |
13499 | } | |
13500 | ||
ef60b7ff | 13501 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
13502 | (info, (h ? &h->elf.root : NULL), sym_name, |
13503 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 13504 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 13505 | return FALSE; |
ef60b7ff AM |
13506 | } |
13507 | else | |
13508 | { | |
25f53a85 | 13509 | info->callbacks->einfo |
8de848d8 | 13510 | (_("%P: %H: %s reloc against `%s': error %d\n"), |
25f53a85 | 13511 | input_bfd, input_section, rel->r_offset, |
4ce794b7 | 13512 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
13513 | sym_name, |
13514 | (int) r); | |
b34976b6 | 13515 | ret = FALSE; |
ef60b7ff | 13516 | } |
5bd4f169 | 13517 | } |
5bd4f169 AM |
13518 | } |
13519 | ||
645ea6a9 AM |
13520 | /* If we're emitting relocations, then shortly after this function |
13521 | returns, reloc offsets and addends for this section will be | |
13522 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
13523 | file rather than the input. Save a copy of the relocs for |
13524 | opd_entry_value. */ | |
4cc603a5 | 13525 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
13526 | { |
13527 | bfd_size_type amt; | |
13528 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
13529 | rel = bfd_alloc (input_bfd, amt); | |
13530 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
13531 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
13532 | if (rel == NULL) | |
13533 | return FALSE; | |
13534 | memcpy (rel, relocs, amt); | |
13535 | } | |
5bd4f169 AM |
13536 | return ret; |
13537 | } | |
13538 | ||
754021d0 AM |
13539 | /* Adjust the value of any local symbols in opd sections. */ |
13540 | ||
6e0b88f1 | 13541 | static int |
754021d0 AM |
13542 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
13543 | const char *name ATTRIBUTE_UNUSED, | |
13544 | Elf_Internal_Sym *elfsym, | |
13545 | asection *input_sec, | |
13546 | struct elf_link_hash_entry *h) | |
13547 | { | |
74f0fb50 AM |
13548 | struct _opd_sec_data *opd; |
13549 | long adjust; | |
754021d0 AM |
13550 | bfd_vma value; |
13551 | ||
4025353c | 13552 | if (h != NULL) |
6e0b88f1 | 13553 | return 1; |
4025353c | 13554 | |
74f0fb50 AM |
13555 | opd = get_opd_info (input_sec); |
13556 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 13557 | return 1; |
754021d0 AM |
13558 | |
13559 | value = elfsym->st_value - input_sec->output_offset; | |
13560 | if (!info->relocatable) | |
13561 | value -= input_sec->output_section->vma; | |
13562 | ||
74f0fb50 | 13563 | adjust = opd->adjust[value / 8]; |
4025353c | 13564 | if (adjust == -1) |
6e0b88f1 AM |
13565 | return 2; |
13566 | ||
13567 | elfsym->st_value += adjust; | |
13568 | return 1; | |
754021d0 AM |
13569 | } |
13570 | ||
5bd4f169 AM |
13571 | /* Finish up dynamic symbol handling. We set the contents of various |
13572 | dynamic sections here. */ | |
13573 | ||
b34976b6 | 13574 | static bfd_boolean |
4ce794b7 AM |
13575 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
13576 | struct bfd_link_info *info, | |
13577 | struct elf_link_hash_entry *h, | |
13578 | Elf_Internal_Sym *sym) | |
5bd4f169 | 13579 | { |
65f38f15 | 13580 | struct ppc_link_hash_table *htab; |
8387904d AM |
13581 | struct plt_entry *ent; |
13582 | Elf_Internal_Rela rela; | |
13583 | bfd_byte *loc; | |
5bd4f169 | 13584 | |
65f38f15 | 13585 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13586 | if (htab == NULL) |
13587 | return FALSE; | |
5bd4f169 | 13588 | |
8387904d AM |
13589 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
13590 | if (ent->plt.offset != (bfd_vma) -1) | |
13591 | { | |
13592 | /* This symbol has an entry in the procedure linkage | |
13593 | table. Set it up. */ | |
e054468f AM |
13594 | if (!htab->elf.dynamic_sections_created |
13595 | || h->dynindx == -1) | |
13596 | { | |
13597 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
13598 | && h->def_regular | |
13599 | && (h->root.type == bfd_link_hash_defined | |
13600 | || h->root.type == bfd_link_hash_defweak)); | |
25f23106 AM |
13601 | rela.r_offset = (htab->iplt->output_section->vma |
13602 | + htab->iplt->output_offset | |
13603 | + ent->plt.offset); | |
13604 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
e054468f AM |
13605 | rela.r_addend = (h->root.u.def.value |
13606 | + h->root.u.def.section->output_offset | |
13607 | + h->root.u.def.section->output_section->vma | |
13608 | + ent->addend); | |
25f23106 AM |
13609 | loc = (htab->reliplt->contents |
13610 | + (htab->reliplt->reloc_count++ | |
13611 | * sizeof (Elf64_External_Rela))); | |
e054468f AM |
13612 | } |
13613 | else | |
13614 | { | |
25f23106 AM |
13615 | rela.r_offset = (htab->plt->output_section->vma |
13616 | + htab->plt->output_offset | |
13617 | + ent->plt.offset); | |
e054468f AM |
13618 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
13619 | rela.r_addend = ent->addend; | |
25f23106 AM |
13620 | loc = (htab->relplt->contents |
13621 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) | |
13622 | / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela)))); | |
e054468f | 13623 | } |
8387904d AM |
13624 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
13625 | } | |
5bd4f169 | 13626 | |
f5385ebf | 13627 | if (h->needs_copy) |
5bd4f169 | 13628 | { |
65f38f15 | 13629 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 13630 | |
65f38f15 AM |
13631 | if (h->dynindx == -1 |
13632 | || (h->root.type != bfd_link_hash_defined | |
13633 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 13634 | || htab->relbss == NULL) |
65f38f15 | 13635 | abort (); |
5bd4f169 AM |
13636 | |
13637 | rela.r_offset = (h->root.u.def.value | |
13638 | + h->root.u.def.section->output_section->vma | |
13639 | + h->root.u.def.section->output_offset); | |
13640 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
13641 | rela.r_addend = 0; | |
4ce794b7 AM |
13642 | loc = htab->relbss->contents; |
13643 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 13644 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
13645 | } |
13646 | ||
5bd4f169 AM |
13647 | /* Mark some specially defined symbols as absolute. */ |
13648 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
13649 | sym->st_shndx = SHN_ABS; | |
13650 | ||
b34976b6 | 13651 | return TRUE; |
5bd4f169 AM |
13652 | } |
13653 | ||
65f38f15 AM |
13654 | /* Used to decide how to sort relocs in an optimal manner for the |
13655 | dynamic linker, before writing them out. */ | |
13656 | ||
13657 | static enum elf_reloc_type_class | |
4ce794b7 | 13658 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 13659 | { |
04c9666a | 13660 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 13661 | |
4ce794b7 | 13662 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 13663 | switch (r_type) |
65f38f15 AM |
13664 | { |
13665 | case R_PPC64_RELATIVE: | |
13666 | return reloc_class_relative; | |
13667 | case R_PPC64_JMP_SLOT: | |
13668 | return reloc_class_plt; | |
13669 | case R_PPC64_COPY: | |
13670 | return reloc_class_copy; | |
13671 | default: | |
13672 | return reloc_class_normal; | |
13673 | } | |
13674 | } | |
13675 | ||
5bd4f169 AM |
13676 | /* Finish up the dynamic sections. */ |
13677 | ||
b34976b6 | 13678 | static bfd_boolean |
4ce794b7 AM |
13679 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
13680 | struct bfd_link_info *info) | |
5bd4f169 | 13681 | { |
65f38f15 AM |
13682 | struct ppc_link_hash_table *htab; |
13683 | bfd *dynobj; | |
5bd4f169 | 13684 | asection *sdyn; |
5bd4f169 | 13685 | |
65f38f15 | 13686 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13687 | if (htab == NULL) |
13688 | return FALSE; | |
13689 | ||
65f38f15 | 13690 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
13691 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
13692 | ||
65f38f15 | 13693 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 13694 | { |
5bd4f169 AM |
13695 | Elf64_External_Dyn *dyncon, *dynconend; |
13696 | ||
4ce794b7 | 13697 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 13698 | abort (); |
5bd4f169 AM |
13699 | |
13700 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 13701 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
13702 | for (; dyncon < dynconend; dyncon++) |
13703 | { | |
13704 | Elf_Internal_Dyn dyn; | |
19397422 | 13705 | asection *s; |
5bd4f169 AM |
13706 | |
13707 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
13708 | ||
13709 | switch (dyn.d_tag) | |
13710 | { | |
65f38f15 AM |
13711 | default: |
13712 | continue; | |
5bd4f169 | 13713 | |
5d1634d7 | 13714 | case DT_PPC64_GLINK: |
4ce794b7 | 13715 | s = htab->glink; |
6348e046 | 13716 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
13717 | /* We stupidly defined DT_PPC64_GLINK to be the start |
13718 | of glink rather than the first entry point, which is | |
13719 | what ld.so needs, and now have a bigger stub to | |
13720 | support automatic multiple TOCs. */ | |
13721 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
13722 | break; |
13723 | ||
19397422 AM |
13724 | case DT_PPC64_OPD: |
13725 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
13726 | if (s == NULL) |
13727 | continue; | |
13728 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
13729 | break; |
13730 | ||
13731 | case DT_PPC64_OPDSZ: | |
13732 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
13733 | if (s == NULL) |
13734 | continue; | |
eea6121a | 13735 | dyn.d_un.d_val = s->size; |
19397422 AM |
13736 | break; |
13737 | ||
65f38f15 | 13738 | case DT_PLTGOT: |
4ce794b7 | 13739 | s = htab->plt; |
6348e046 | 13740 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
13741 | break; |
13742 | ||
13743 | case DT_JMPREL: | |
4ce794b7 | 13744 | s = htab->relplt; |
6348e046 | 13745 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 13746 | break; |
5bd4f169 | 13747 | |
65f38f15 | 13748 | case DT_PLTRELSZ: |
eea6121a | 13749 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
13750 | break; |
13751 | ||
13752 | case DT_RELASZ: | |
13753 | /* Don't count procedure linkage table relocs in the | |
13754 | overall reloc count. */ | |
4ce794b7 | 13755 | s = htab->relplt; |
6348e046 AM |
13756 | if (s == NULL) |
13757 | continue; | |
eea6121a | 13758 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
13759 | break; |
13760 | ||
13761 | case DT_RELA: | |
13762 | /* We may not be using the standard ELF linker script. | |
13763 | If .rela.plt is the first .rela section, we adjust | |
13764 | DT_RELA to not include it. */ | |
4ce794b7 | 13765 | s = htab->relplt; |
6348e046 AM |
13766 | if (s == NULL) |
13767 | continue; | |
13768 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
13769 | continue; | |
eea6121a | 13770 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 13771 | break; |
5bd4f169 | 13772 | } |
5bd4f169 | 13773 | |
65f38f15 | 13774 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 13775 | } |
5bd4f169 AM |
13776 | } |
13777 | ||
eea6121a | 13778 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
13779 | { |
13780 | /* Fill in the first entry in the global offset table. | |
13781 | We use it to hold the link-time TOCbase. */ | |
13782 | bfd_put_64 (output_bfd, | |
60ee0d4a | 13783 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 13784 | htab->got->contents); |
5d1634d7 AM |
13785 | |
13786 | /* Set .got entry size. */ | |
4ce794b7 | 13787 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
13788 | } |
13789 | ||
eea6121a | 13790 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
13791 | { |
13792 | /* Set .plt entry size. */ | |
4ce794b7 | 13793 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
13794 | = PLT_ENTRY_SIZE; |
13795 | } | |
13796 | ||
84f5d08e AM |
13797 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
13798 | brlt ourselves if emitrelocations. */ | |
13799 | if (htab->brlt != NULL | |
13800 | && htab->brlt->reloc_count != 0 | |
13801 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13802 | htab->brlt, | |
d4730f92 | 13803 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
13804 | elf_section_data (htab->brlt)->relocs, |
13805 | NULL)) | |
13806 | return FALSE; | |
13807 | ||
176a0d42 AM |
13808 | if (htab->glink != NULL |
13809 | && htab->glink->reloc_count != 0 | |
13810 | && !_bfd_elf_link_output_relocs (output_bfd, | |
13811 | htab->glink, | |
d4730f92 | 13812 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
13813 | elf_section_data (htab->glink)->relocs, |
13814 | NULL)) | |
13815 | return FALSE; | |
13816 | ||
58d180e8 AM |
13817 | |
13818 | if (htab->glink_eh_frame != NULL | |
13819 | && htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME | |
13820 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
13821 | htab->glink_eh_frame, | |
13822 | htab->glink_eh_frame->contents)) | |
13823 | return FALSE; | |
13824 | ||
e717da7e | 13825 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
13826 | since we didn't add them to DYNOBJ. We know dynobj is the first |
13827 | bfd. */ | |
e717da7e AM |
13828 | while ((dynobj = dynobj->link_next) != NULL) |
13829 | { | |
13830 | asection *s; | |
7b53ace3 | 13831 | |
0c8d6e5c | 13832 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
13833 | continue; |
13834 | ||
e717da7e AM |
13835 | s = ppc64_elf_tdata (dynobj)->got; |
13836 | if (s != NULL | |
eea6121a | 13837 | && s->size != 0 |
e717da7e AM |
13838 | && s->output_section != bfd_abs_section_ptr |
13839 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13840 | s->contents, s->output_offset, | |
eea6121a | 13841 | s->size)) |
e717da7e AM |
13842 | return FALSE; |
13843 | s = ppc64_elf_tdata (dynobj)->relgot; | |
13844 | if (s != NULL | |
eea6121a | 13845 | && s->size != 0 |
e717da7e AM |
13846 | && s->output_section != bfd_abs_section_ptr |
13847 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
13848 | s->contents, s->output_offset, | |
eea6121a | 13849 | s->size)) |
e717da7e AM |
13850 | return FALSE; |
13851 | } | |
f6c52c13 | 13852 | |
b34976b6 | 13853 | return TRUE; |
5bd4f169 AM |
13854 | } |
13855 | ||
5bd4f169 | 13856 | #include "elf64-target.h" |