1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
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
88 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define elf_backend_object_p ppc64_elf_object_p
92 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
94 #define elf_backend_write_core_note ppc64_elf_write_core_note
95 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
97 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
98 #define elf_backend_check_directives ppc64_elf_process_dot_syms
99 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
100 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
101 #define elf_backend_check_relocs ppc64_elf_check_relocs
102 #define elf_backend_gc_keep ppc64_elf_gc_keep
103 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
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_maybe_function_sym ppc64_elf_maybe_function_sym
109 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
111 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
112 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
113 #define elf_backend_action_discarded ppc64_elf_action_discarded
114 #define elf_backend_relocate_section ppc64_elf_relocate_section
115 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
116 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
117 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
118 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
119 #define elf_backend_special_sections ppc64_elf_special_sections
120 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
122 /* The name of the dynamic interpreter. This is put in the .interp
124 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
126 /* The size in bytes of an entry in the procedure linkage table. */
127 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
129 /* The initial size of the plt reserved for the dynamic linker. */
130 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
132 /* Offsets to some stack save slots. */
134 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
135 /* This one is dodgy. ELFv2 does not have a linker word, so use the
136 CR save slot. Used only by optimised __tls_get_addr call stub,
137 relying on __tls_get_addr_opt not saving CR.. */
138 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
140 /* TOC base pointers offset from start of TOC. */
141 #define TOC_BASE_OFF 0x8000
143 /* Offset of tp and dtp pointers from start of TLS block. */
144 #define TP_OFFSET 0x7000
145 #define DTP_OFFSET 0x8000
147 /* .plt call stub instructions. The normal stub is like this, but
148 sometimes the .plt entry crosses a 64k boundary and we need to
149 insert an addi to adjust r11. */
150 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
151 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
152 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
153 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
154 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
155 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
156 #define BCTR 0x4e800420 /* bctr */
158 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
159 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
160 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
162 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
163 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
164 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
165 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
166 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
167 #define BNECTR 0x4ca20420 /* bnectr+ */
168 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
170 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
171 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
172 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
174 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
239 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
241 /* Relocation HOWTO's. */
242 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
244 static reloc_howto_type ppc64_elf_howto_raw
[] = {
245 /* This reloc does nothing. */
246 HOWTO (R_PPC64_NONE
, /* type */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
250 FALSE
, /* pc_relative */
252 complain_overflow_dont
, /* complain_on_overflow */
253 bfd_elf_generic_reloc
, /* special_function */
254 "R_PPC64_NONE", /* name */
255 FALSE
, /* partial_inplace */
258 FALSE
), /* pcrel_offset */
260 /* A standard 32 bit relocation. */
261 HOWTO (R_PPC64_ADDR32
, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE
, /* pc_relative */
267 complain_overflow_bitfield
, /* complain_on_overflow */
268 bfd_elf_generic_reloc
, /* special_function */
269 "R_PPC64_ADDR32", /* name */
270 FALSE
, /* partial_inplace */
272 0xffffffff, /* dst_mask */
273 FALSE
), /* pcrel_offset */
275 /* An absolute 26 bit branch; the lower two bits must be zero.
276 FIXME: we don't check that, we just clear them. */
277 HOWTO (R_PPC64_ADDR24
, /* type */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE
, /* pc_relative */
283 complain_overflow_bitfield
, /* complain_on_overflow */
284 bfd_elf_generic_reloc
, /* special_function */
285 "R_PPC64_ADDR24", /* name */
286 FALSE
, /* partial_inplace */
288 0x03fffffc, /* dst_mask */
289 FALSE
), /* pcrel_offset */
291 /* A standard 16 bit relocation. */
292 HOWTO (R_PPC64_ADDR16
, /* type */
294 1, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE
, /* pc_relative */
298 complain_overflow_bitfield
, /* complain_on_overflow */
299 bfd_elf_generic_reloc
, /* special_function */
300 "R_PPC64_ADDR16", /* name */
301 FALSE
, /* partial_inplace */
303 0xffff, /* dst_mask */
304 FALSE
), /* pcrel_offset */
306 /* A 16 bit relocation without overflow. */
307 HOWTO (R_PPC64_ADDR16_LO
, /* type */
309 1, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE
, /* pc_relative */
313 complain_overflow_dont
,/* complain_on_overflow */
314 bfd_elf_generic_reloc
, /* special_function */
315 "R_PPC64_ADDR16_LO", /* name */
316 FALSE
, /* partial_inplace */
318 0xffff, /* dst_mask */
319 FALSE
), /* pcrel_offset */
321 /* Bits 16-31 of an address. */
322 HOWTO (R_PPC64_ADDR16_HI
, /* type */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE
, /* pc_relative */
328 complain_overflow_signed
, /* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_PPC64_ADDR16_HI", /* name */
331 FALSE
, /* partial_inplace */
333 0xffff, /* dst_mask */
334 FALSE
), /* pcrel_offset */
336 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
337 bits, treated as a signed number, is negative. */
338 HOWTO (R_PPC64_ADDR16_HA
, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE
, /* pc_relative */
344 complain_overflow_signed
, /* complain_on_overflow */
345 ppc64_elf_ha_reloc
, /* special_function */
346 "R_PPC64_ADDR16_HA", /* name */
347 FALSE
, /* partial_inplace */
349 0xffff, /* dst_mask */
350 FALSE
), /* pcrel_offset */
352 /* An absolute 16 bit branch; the lower two bits must be zero.
353 FIXME: we don't check that, we just clear them. */
354 HOWTO (R_PPC64_ADDR14
, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE
, /* pc_relative */
360 complain_overflow_signed
, /* complain_on_overflow */
361 ppc64_elf_branch_reloc
, /* special_function */
362 "R_PPC64_ADDR14", /* name */
363 FALSE
, /* partial_inplace */
365 0x0000fffc, /* dst_mask */
366 FALSE
), /* pcrel_offset */
368 /* An absolute 16 bit branch, for which bit 10 should be set to
369 indicate that the branch is expected to be taken. The lower two
370 bits must be zero. */
371 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 FALSE
, /* pc_relative */
377 complain_overflow_signed
, /* complain_on_overflow */
378 ppc64_elf_brtaken_reloc
, /* special_function */
379 "R_PPC64_ADDR14_BRTAKEN",/* name */
380 FALSE
, /* partial_inplace */
382 0x0000fffc, /* dst_mask */
383 FALSE
), /* pcrel_offset */
385 /* An absolute 16 bit branch, for which bit 10 should be set to
386 indicate that the branch is not expected to be taken. The lower
387 two bits must be zero. */
388 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 FALSE
, /* pc_relative */
394 complain_overflow_signed
, /* complain_on_overflow */
395 ppc64_elf_brtaken_reloc
, /* special_function */
396 "R_PPC64_ADDR14_BRNTAKEN",/* name */
397 FALSE
, /* partial_inplace */
399 0x0000fffc, /* dst_mask */
400 FALSE
), /* pcrel_offset */
402 /* A relative 26 bit branch; the lower two bits must be zero. */
403 HOWTO (R_PPC64_REL24
, /* type */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
407 TRUE
, /* pc_relative */
409 complain_overflow_signed
, /* complain_on_overflow */
410 ppc64_elf_branch_reloc
, /* special_function */
411 "R_PPC64_REL24", /* name */
412 FALSE
, /* partial_inplace */
414 0x03fffffc, /* dst_mask */
415 TRUE
), /* pcrel_offset */
417 /* A relative 16 bit branch; the lower two bits must be zero. */
418 HOWTO (R_PPC64_REL14
, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 TRUE
, /* pc_relative */
424 complain_overflow_signed
, /* complain_on_overflow */
425 ppc64_elf_branch_reloc
, /* special_function */
426 "R_PPC64_REL14", /* name */
427 FALSE
, /* partial_inplace */
429 0x0000fffc, /* dst_mask */
430 TRUE
), /* pcrel_offset */
432 /* A relative 16 bit branch. Bit 10 should be set to indicate that
433 the branch is expected to be taken. The lower two bits must be
435 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
439 TRUE
, /* pc_relative */
441 complain_overflow_signed
, /* complain_on_overflow */
442 ppc64_elf_brtaken_reloc
, /* special_function */
443 "R_PPC64_REL14_BRTAKEN", /* name */
444 FALSE
, /* partial_inplace */
446 0x0000fffc, /* dst_mask */
447 TRUE
), /* pcrel_offset */
449 /* A relative 16 bit branch. Bit 10 should be set to indicate that
450 the branch is not expected to be taken. The lower two bits must
452 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
456 TRUE
, /* pc_relative */
458 complain_overflow_signed
, /* complain_on_overflow */
459 ppc64_elf_brtaken_reloc
, /* special_function */
460 "R_PPC64_REL14_BRNTAKEN",/* name */
461 FALSE
, /* partial_inplace */
463 0x0000fffc, /* dst_mask */
464 TRUE
), /* pcrel_offset */
466 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
468 HOWTO (R_PPC64_GOT16
, /* type */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE
, /* pc_relative */
474 complain_overflow_signed
, /* complain_on_overflow */
475 ppc64_elf_unhandled_reloc
, /* special_function */
476 "R_PPC64_GOT16", /* name */
477 FALSE
, /* partial_inplace */
479 0xffff, /* dst_mask */
480 FALSE
), /* pcrel_offset */
482 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
484 HOWTO (R_PPC64_GOT16_LO
, /* type */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE
, /* pc_relative */
490 complain_overflow_dont
, /* complain_on_overflow */
491 ppc64_elf_unhandled_reloc
, /* special_function */
492 "R_PPC64_GOT16_LO", /* name */
493 FALSE
, /* partial_inplace */
495 0xffff, /* dst_mask */
496 FALSE
), /* pcrel_offset */
498 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
500 HOWTO (R_PPC64_GOT16_HI
, /* type */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_signed
,/* complain_on_overflow */
507 ppc64_elf_unhandled_reloc
, /* special_function */
508 "R_PPC64_GOT16_HI", /* name */
509 FALSE
, /* partial_inplace */
511 0xffff, /* dst_mask */
512 FALSE
), /* pcrel_offset */
514 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
516 HOWTO (R_PPC64_GOT16_HA
, /* type */
518 1, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_signed
,/* complain_on_overflow */
523 ppc64_elf_unhandled_reloc
, /* special_function */
524 "R_PPC64_GOT16_HA", /* name */
525 FALSE
, /* partial_inplace */
527 0xffff, /* dst_mask */
528 FALSE
), /* pcrel_offset */
530 /* This is used only by the dynamic linker. The symbol should exist
531 both in the object being run and in some shared library. The
532 dynamic linker copies the data addressed by the symbol from the
533 shared library into the object, because the object being
534 run has to have the data at some particular address. */
535 HOWTO (R_PPC64_COPY
, /* type */
537 0, /* this one is variable size */
539 FALSE
, /* pc_relative */
541 complain_overflow_dont
, /* complain_on_overflow */
542 ppc64_elf_unhandled_reloc
, /* special_function */
543 "R_PPC64_COPY", /* name */
544 FALSE
, /* partial_inplace */
547 FALSE
), /* pcrel_offset */
549 /* Like R_PPC64_ADDR64, but used when setting global offset table
551 HOWTO (R_PPC64_GLOB_DAT
, /* type */
553 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
555 FALSE
, /* pc_relative */
557 complain_overflow_dont
, /* complain_on_overflow */
558 ppc64_elf_unhandled_reloc
, /* special_function */
559 "R_PPC64_GLOB_DAT", /* name */
560 FALSE
, /* partial_inplace */
562 ONES (64), /* dst_mask */
563 FALSE
), /* pcrel_offset */
565 /* Created by the link editor. Marks a procedure linkage table
566 entry for a symbol. */
567 HOWTO (R_PPC64_JMP_SLOT
, /* type */
569 0, /* size (0 = byte, 1 = short, 2 = long) */
571 FALSE
, /* pc_relative */
573 complain_overflow_dont
, /* complain_on_overflow */
574 ppc64_elf_unhandled_reloc
, /* special_function */
575 "R_PPC64_JMP_SLOT", /* name */
576 FALSE
, /* partial_inplace */
579 FALSE
), /* pcrel_offset */
581 /* Used only by the dynamic linker. When the object is run, this
582 doubleword64 is set to the load address of the object, plus the
584 HOWTO (R_PPC64_RELATIVE
, /* type */
586 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
588 FALSE
, /* pc_relative */
590 complain_overflow_dont
, /* complain_on_overflow */
591 bfd_elf_generic_reloc
, /* special_function */
592 "R_PPC64_RELATIVE", /* name */
593 FALSE
, /* partial_inplace */
595 ONES (64), /* dst_mask */
596 FALSE
), /* pcrel_offset */
598 /* Like R_PPC64_ADDR32, but may be unaligned. */
599 HOWTO (R_PPC64_UADDR32
, /* type */
601 2, /* size (0 = byte, 1 = short, 2 = long) */
603 FALSE
, /* pc_relative */
605 complain_overflow_bitfield
, /* complain_on_overflow */
606 bfd_elf_generic_reloc
, /* special_function */
607 "R_PPC64_UADDR32", /* name */
608 FALSE
, /* partial_inplace */
610 0xffffffff, /* dst_mask */
611 FALSE
), /* pcrel_offset */
613 /* Like R_PPC64_ADDR16, but may be unaligned. */
614 HOWTO (R_PPC64_UADDR16
, /* type */
616 1, /* size (0 = byte, 1 = short, 2 = long) */
618 FALSE
, /* pc_relative */
620 complain_overflow_bitfield
, /* complain_on_overflow */
621 bfd_elf_generic_reloc
, /* special_function */
622 "R_PPC64_UADDR16", /* name */
623 FALSE
, /* partial_inplace */
625 0xffff, /* dst_mask */
626 FALSE
), /* pcrel_offset */
628 /* 32-bit PC relative. */
629 HOWTO (R_PPC64_REL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 TRUE
, /* pc_relative */
635 complain_overflow_signed
, /* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_PPC64_REL32", /* name */
638 FALSE
, /* partial_inplace */
640 0xffffffff, /* dst_mask */
641 TRUE
), /* pcrel_offset */
643 /* 32-bit relocation to the symbol's procedure linkage table. */
644 HOWTO (R_PPC64_PLT32
, /* type */
646 2, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE
, /* pc_relative */
650 complain_overflow_bitfield
, /* complain_on_overflow */
651 ppc64_elf_unhandled_reloc
, /* special_function */
652 "R_PPC64_PLT32", /* name */
653 FALSE
, /* partial_inplace */
655 0xffffffff, /* dst_mask */
656 FALSE
), /* pcrel_offset */
658 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
659 FIXME: R_PPC64_PLTREL32 not supported. */
660 HOWTO (R_PPC64_PLTREL32
, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 TRUE
, /* pc_relative */
666 complain_overflow_signed
, /* complain_on_overflow */
667 bfd_elf_generic_reloc
, /* special_function */
668 "R_PPC64_PLTREL32", /* name */
669 FALSE
, /* partial_inplace */
671 0xffffffff, /* dst_mask */
672 TRUE
), /* pcrel_offset */
674 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
676 HOWTO (R_PPC64_PLT16_LO
, /* type */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE
, /* pc_relative */
682 complain_overflow_dont
, /* complain_on_overflow */
683 ppc64_elf_unhandled_reloc
, /* special_function */
684 "R_PPC64_PLT16_LO", /* name */
685 FALSE
, /* partial_inplace */
687 0xffff, /* dst_mask */
688 FALSE
), /* pcrel_offset */
690 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
692 HOWTO (R_PPC64_PLT16_HI
, /* type */
694 1, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE
, /* pc_relative */
698 complain_overflow_signed
, /* complain_on_overflow */
699 ppc64_elf_unhandled_reloc
, /* special_function */
700 "R_PPC64_PLT16_HI", /* name */
701 FALSE
, /* partial_inplace */
703 0xffff, /* dst_mask */
704 FALSE
), /* pcrel_offset */
706 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
708 HOWTO (R_PPC64_PLT16_HA
, /* type */
710 1, /* size (0 = byte, 1 = short, 2 = long) */
712 FALSE
, /* pc_relative */
714 complain_overflow_signed
, /* complain_on_overflow */
715 ppc64_elf_unhandled_reloc
, /* special_function */
716 "R_PPC64_PLT16_HA", /* name */
717 FALSE
, /* partial_inplace */
719 0xffff, /* dst_mask */
720 FALSE
), /* pcrel_offset */
722 /* 16-bit section relative relocation. */
723 HOWTO (R_PPC64_SECTOFF
, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 FALSE
, /* pc_relative */
729 complain_overflow_signed
, /* complain_on_overflow */
730 ppc64_elf_sectoff_reloc
, /* special_function */
731 "R_PPC64_SECTOFF", /* name */
732 FALSE
, /* partial_inplace */
734 0xffff, /* dst_mask */
735 FALSE
), /* pcrel_offset */
737 /* Like R_PPC64_SECTOFF, but no overflow warning. */
738 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 FALSE
, /* pc_relative */
744 complain_overflow_dont
, /* complain_on_overflow */
745 ppc64_elf_sectoff_reloc
, /* special_function */
746 "R_PPC64_SECTOFF_LO", /* name */
747 FALSE
, /* partial_inplace */
749 0xffff, /* dst_mask */
750 FALSE
), /* pcrel_offset */
752 /* 16-bit upper half section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 FALSE
, /* pc_relative */
759 complain_overflow_signed
, /* complain_on_overflow */
760 ppc64_elf_sectoff_reloc
, /* special_function */
761 "R_PPC64_SECTOFF_HI", /* name */
762 FALSE
, /* partial_inplace */
764 0xffff, /* dst_mask */
765 FALSE
), /* pcrel_offset */
767 /* 16-bit upper half adjusted section relative relocation. */
768 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
770 1, /* size (0 = byte, 1 = short, 2 = long) */
772 FALSE
, /* pc_relative */
774 complain_overflow_signed
, /* complain_on_overflow */
775 ppc64_elf_sectoff_ha_reloc
, /* special_function */
776 "R_PPC64_SECTOFF_HA", /* name */
777 FALSE
, /* partial_inplace */
779 0xffff, /* dst_mask */
780 FALSE
), /* pcrel_offset */
782 /* Like R_PPC64_REL24 without touching the two least significant bits. */
783 HOWTO (R_PPC64_REL30
, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE
, /* pc_relative */
789 complain_overflow_dont
, /* complain_on_overflow */
790 bfd_elf_generic_reloc
, /* special_function */
791 "R_PPC64_REL30", /* name */
792 FALSE
, /* partial_inplace */
794 0xfffffffc, /* dst_mask */
795 TRUE
), /* pcrel_offset */
797 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
799 /* A standard 64-bit relocation. */
800 HOWTO (R_PPC64_ADDR64
, /* type */
802 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
804 FALSE
, /* pc_relative */
806 complain_overflow_dont
, /* complain_on_overflow */
807 bfd_elf_generic_reloc
, /* special_function */
808 "R_PPC64_ADDR64", /* name */
809 FALSE
, /* partial_inplace */
811 ONES (64), /* dst_mask */
812 FALSE
), /* pcrel_offset */
814 /* The bits 32-47 of an address. */
815 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
819 FALSE
, /* pc_relative */
821 complain_overflow_dont
, /* complain_on_overflow */
822 bfd_elf_generic_reloc
, /* special_function */
823 "R_PPC64_ADDR16_HIGHER", /* name */
824 FALSE
, /* partial_inplace */
826 0xffff, /* dst_mask */
827 FALSE
), /* pcrel_offset */
829 /* The bits 32-47 of an address, plus 1 if the contents of the low
830 16 bits, treated as a signed number, is negative. */
831 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE
, /* pc_relative */
837 complain_overflow_dont
, /* complain_on_overflow */
838 ppc64_elf_ha_reloc
, /* special_function */
839 "R_PPC64_ADDR16_HIGHERA", /* name */
840 FALSE
, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE
), /* pcrel_offset */
845 /* The bits 48-63 of an address. */
846 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
848 1, /* size (0 = byte, 1 = short, 2 = long) */
850 FALSE
, /* pc_relative */
852 complain_overflow_dont
, /* complain_on_overflow */
853 bfd_elf_generic_reloc
, /* special_function */
854 "R_PPC64_ADDR16_HIGHEST", /* name */
855 FALSE
, /* partial_inplace */
857 0xffff, /* dst_mask */
858 FALSE
), /* pcrel_offset */
860 /* The bits 48-63 of an address, plus 1 if the contents of the low
861 16 bits, treated as a signed number, is negative. */
862 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
864 1, /* size (0 = byte, 1 = short, 2 = long) */
866 FALSE
, /* pc_relative */
868 complain_overflow_dont
, /* complain_on_overflow */
869 ppc64_elf_ha_reloc
, /* special_function */
870 "R_PPC64_ADDR16_HIGHESTA", /* name */
871 FALSE
, /* partial_inplace */
873 0xffff, /* dst_mask */
874 FALSE
), /* pcrel_offset */
876 /* Like ADDR64, but may be unaligned. */
877 HOWTO (R_PPC64_UADDR64
, /* type */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
881 FALSE
, /* pc_relative */
883 complain_overflow_dont
, /* complain_on_overflow */
884 bfd_elf_generic_reloc
, /* special_function */
885 "R_PPC64_UADDR64", /* name */
886 FALSE
, /* partial_inplace */
888 ONES (64), /* dst_mask */
889 FALSE
), /* pcrel_offset */
891 /* 64-bit relative relocation. */
892 HOWTO (R_PPC64_REL64
, /* type */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
896 TRUE
, /* pc_relative */
898 complain_overflow_dont
, /* complain_on_overflow */
899 bfd_elf_generic_reloc
, /* special_function */
900 "R_PPC64_REL64", /* name */
901 FALSE
, /* partial_inplace */
903 ONES (64), /* dst_mask */
904 TRUE
), /* pcrel_offset */
906 /* 64-bit relocation to the symbol's procedure linkage table. */
907 HOWTO (R_PPC64_PLT64
, /* type */
909 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
911 FALSE
, /* pc_relative */
913 complain_overflow_dont
, /* complain_on_overflow */
914 ppc64_elf_unhandled_reloc
, /* special_function */
915 "R_PPC64_PLT64", /* name */
916 FALSE
, /* partial_inplace */
918 ONES (64), /* dst_mask */
919 FALSE
), /* pcrel_offset */
921 /* 64-bit PC relative relocation to the symbol's procedure linkage
923 /* FIXME: R_PPC64_PLTREL64 not supported. */
924 HOWTO (R_PPC64_PLTREL64
, /* type */
926 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
928 TRUE
, /* pc_relative */
930 complain_overflow_dont
, /* complain_on_overflow */
931 ppc64_elf_unhandled_reloc
, /* special_function */
932 "R_PPC64_PLTREL64", /* name */
933 FALSE
, /* partial_inplace */
935 ONES (64), /* dst_mask */
936 TRUE
), /* pcrel_offset */
938 /* 16 bit TOC-relative relocation. */
940 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
941 HOWTO (R_PPC64_TOC16
, /* type */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE
, /* pc_relative */
947 complain_overflow_signed
, /* complain_on_overflow */
948 ppc64_elf_toc_reloc
, /* special_function */
949 "R_PPC64_TOC16", /* name */
950 FALSE
, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE
), /* pcrel_offset */
955 /* 16 bit TOC-relative relocation without overflow. */
957 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
958 HOWTO (R_PPC64_TOC16_LO
, /* type */
960 1, /* size (0 = byte, 1 = short, 2 = long) */
962 FALSE
, /* pc_relative */
964 complain_overflow_dont
, /* complain_on_overflow */
965 ppc64_elf_toc_reloc
, /* special_function */
966 "R_PPC64_TOC16_LO", /* name */
967 FALSE
, /* partial_inplace */
969 0xffff, /* dst_mask */
970 FALSE
), /* pcrel_offset */
972 /* 16 bit TOC-relative relocation, high 16 bits. */
974 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
975 HOWTO (R_PPC64_TOC16_HI
, /* type */
977 1, /* size (0 = byte, 1 = short, 2 = long) */
979 FALSE
, /* pc_relative */
981 complain_overflow_signed
, /* complain_on_overflow */
982 ppc64_elf_toc_reloc
, /* special_function */
983 "R_PPC64_TOC16_HI", /* name */
984 FALSE
, /* partial_inplace */
986 0xffff, /* dst_mask */
987 FALSE
), /* pcrel_offset */
989 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
990 contents of the low 16 bits, treated as a signed number, is
993 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
994 HOWTO (R_PPC64_TOC16_HA
, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE
, /* pc_relative */
1000 complain_overflow_signed
, /* complain_on_overflow */
1001 ppc64_elf_toc_ha_reloc
, /* special_function */
1002 "R_PPC64_TOC16_HA", /* name */
1003 FALSE
, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE
), /* pcrel_offset */
1008 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1010 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1011 HOWTO (R_PPC64_TOC
, /* type */
1013 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1015 FALSE
, /* pc_relative */
1017 complain_overflow_dont
, /* complain_on_overflow */
1018 ppc64_elf_toc64_reloc
, /* special_function */
1019 "R_PPC64_TOC", /* name */
1020 FALSE
, /* partial_inplace */
1022 ONES (64), /* dst_mask */
1023 FALSE
), /* pcrel_offset */
1025 /* Like R_PPC64_GOT16, but also informs the link editor that the
1026 value to relocate may (!) refer to a PLT entry which the link
1027 editor (a) may replace with the symbol value. If the link editor
1028 is unable to fully resolve the symbol, it may (b) create a PLT
1029 entry and store the address to the new PLT entry in the GOT.
1030 This permits lazy resolution of function symbols at run time.
1031 The link editor may also skip all of this and just (c) emit a
1032 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1033 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1034 HOWTO (R_PPC64_PLTGOT16
, /* type */
1036 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 FALSE
, /* pc_relative */
1040 complain_overflow_signed
, /* complain_on_overflow */
1041 ppc64_elf_unhandled_reloc
, /* special_function */
1042 "R_PPC64_PLTGOT16", /* name */
1043 FALSE
, /* partial_inplace */
1045 0xffff, /* dst_mask */
1046 FALSE
), /* pcrel_offset */
1048 /* Like R_PPC64_PLTGOT16, but without overflow. */
1049 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1050 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE
, /* pc_relative */
1056 complain_overflow_dont
, /* complain_on_overflow */
1057 ppc64_elf_unhandled_reloc
, /* special_function */
1058 "R_PPC64_PLTGOT16_LO", /* name */
1059 FALSE
, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE
), /* pcrel_offset */
1064 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1065 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1066 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1067 16, /* rightshift */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE
, /* pc_relative */
1072 complain_overflow_signed
, /* complain_on_overflow */
1073 ppc64_elf_unhandled_reloc
, /* special_function */
1074 "R_PPC64_PLTGOT16_HI", /* name */
1075 FALSE
, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE
), /* pcrel_offset */
1080 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1081 1 if the contents of the low 16 bits, treated as a signed number,
1083 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1084 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1085 16, /* rightshift */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1088 FALSE
, /* pc_relative */
1090 complain_overflow_signed
, /* complain_on_overflow */
1091 ppc64_elf_unhandled_reloc
, /* special_function */
1092 "R_PPC64_PLTGOT16_HA", /* name */
1093 FALSE
, /* partial_inplace */
1095 0xffff, /* dst_mask */
1096 FALSE
), /* pcrel_offset */
1098 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1103 FALSE
, /* pc_relative */
1105 complain_overflow_signed
, /* complain_on_overflow */
1106 bfd_elf_generic_reloc
, /* special_function */
1107 "R_PPC64_ADDR16_DS", /* name */
1108 FALSE
, /* partial_inplace */
1110 0xfffc, /* dst_mask */
1111 FALSE
), /* pcrel_offset */
1113 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1118 FALSE
, /* pc_relative */
1120 complain_overflow_dont
,/* complain_on_overflow */
1121 bfd_elf_generic_reloc
, /* special_function */
1122 "R_PPC64_ADDR16_LO_DS",/* name */
1123 FALSE
, /* partial_inplace */
1125 0xfffc, /* dst_mask */
1126 FALSE
), /* pcrel_offset */
1128 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_DS
, /* type */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1133 FALSE
, /* pc_relative */
1135 complain_overflow_signed
, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc
, /* special_function */
1137 "R_PPC64_GOT16_DS", /* name */
1138 FALSE
, /* partial_inplace */
1140 0xfffc, /* dst_mask */
1141 FALSE
), /* pcrel_offset */
1143 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 FALSE
, /* pc_relative */
1150 complain_overflow_dont
, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc
, /* special_function */
1152 "R_PPC64_GOT16_LO_DS", /* name */
1153 FALSE
, /* partial_inplace */
1155 0xfffc, /* dst_mask */
1156 FALSE
), /* pcrel_offset */
1158 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1163 FALSE
, /* pc_relative */
1165 complain_overflow_dont
, /* complain_on_overflow */
1166 ppc64_elf_unhandled_reloc
, /* special_function */
1167 "R_PPC64_PLT16_LO_DS", /* name */
1168 FALSE
, /* partial_inplace */
1170 0xfffc, /* dst_mask */
1171 FALSE
), /* pcrel_offset */
1173 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE
, /* pc_relative */
1180 complain_overflow_signed
, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc
, /* special_function */
1182 "R_PPC64_SECTOFF_DS", /* name */
1183 FALSE
, /* partial_inplace */
1185 0xfffc, /* dst_mask */
1186 FALSE
), /* pcrel_offset */
1188 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1193 FALSE
, /* pc_relative */
1195 complain_overflow_dont
, /* complain_on_overflow */
1196 ppc64_elf_sectoff_reloc
, /* special_function */
1197 "R_PPC64_SECTOFF_LO_DS",/* name */
1198 FALSE
, /* partial_inplace */
1200 0xfffc, /* dst_mask */
1201 FALSE
), /* pcrel_offset */
1203 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_DS
, /* type */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1208 FALSE
, /* pc_relative */
1210 complain_overflow_signed
, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc
, /* special_function */
1212 "R_PPC64_TOC16_DS", /* name */
1213 FALSE
, /* partial_inplace */
1215 0xfffc, /* dst_mask */
1216 FALSE
), /* pcrel_offset */
1218 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1219 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 FALSE
, /* pc_relative */
1225 complain_overflow_dont
, /* complain_on_overflow */
1226 ppc64_elf_toc_reloc
, /* special_function */
1227 "R_PPC64_TOC16_LO_DS", /* name */
1228 FALSE
, /* partial_inplace */
1230 0xfffc, /* dst_mask */
1231 FALSE
), /* pcrel_offset */
1233 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1234 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1235 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE
, /* pc_relative */
1241 complain_overflow_signed
, /* complain_on_overflow */
1242 ppc64_elf_unhandled_reloc
, /* special_function */
1243 "R_PPC64_PLTGOT16_DS", /* name */
1244 FALSE
, /* partial_inplace */
1246 0xfffc, /* dst_mask */
1247 FALSE
), /* pcrel_offset */
1249 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1250 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1251 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1253 1, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE
, /* pc_relative */
1257 complain_overflow_dont
, /* complain_on_overflow */
1258 ppc64_elf_unhandled_reloc
, /* special_function */
1259 "R_PPC64_PLTGOT16_LO_DS",/* name */
1260 FALSE
, /* partial_inplace */
1262 0xfffc, /* dst_mask */
1263 FALSE
), /* pcrel_offset */
1265 /* Marker relocs for TLS. */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
, /* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 "R_PPC64_TLS", /* name */
1275 FALSE
, /* partial_inplace */
1278 FALSE
), /* pcrel_offset */
1280 HOWTO (R_PPC64_TLSGD
,
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_dont
, /* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_PPC64_TLSGD", /* name */
1289 FALSE
, /* partial_inplace */
1292 FALSE
), /* pcrel_offset */
1294 HOWTO (R_PPC64_TLSLD
,
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
, /* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_PPC64_TLSLD", /* name */
1303 FALSE
, /* partial_inplace */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_PPC64_TOCSAVE
,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
, /* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_PPC64_TOCSAVE", /* name */
1317 FALSE
, /* partial_inplace */
1320 FALSE
), /* pcrel_offset */
1322 /* Computes the load module index of the load module that contains the
1323 definition of its TLS sym. */
1324 HOWTO (R_PPC64_DTPMOD64
,
1326 4, /* size (0 = byte, 1 = short, 2 = long) */
1328 FALSE
, /* pc_relative */
1330 complain_overflow_dont
, /* complain_on_overflow */
1331 ppc64_elf_unhandled_reloc
, /* special_function */
1332 "R_PPC64_DTPMOD64", /* name */
1333 FALSE
, /* partial_inplace */
1335 ONES (64), /* dst_mask */
1336 FALSE
), /* pcrel_offset */
1338 /* Computes a dtv-relative displacement, the difference between the value
1339 of sym+add and the base address of the thread-local storage block that
1340 contains the definition of sym, minus 0x8000. */
1341 HOWTO (R_PPC64_DTPREL64
,
1343 4, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE
, /* pc_relative */
1347 complain_overflow_dont
, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc
, /* special_function */
1349 "R_PPC64_DTPREL64", /* name */
1350 FALSE
, /* partial_inplace */
1352 ONES (64), /* dst_mask */
1353 FALSE
), /* pcrel_offset */
1355 /* A 16 bit dtprel reloc. */
1356 HOWTO (R_PPC64_DTPREL16
,
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE
, /* pc_relative */
1362 complain_overflow_signed
, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc
, /* special_function */
1364 "R_PPC64_DTPREL16", /* name */
1365 FALSE
, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE
), /* pcrel_offset */
1370 /* Like DTPREL16, but no overflow. */
1371 HOWTO (R_PPC64_DTPREL16_LO
,
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc
, /* special_function */
1379 "R_PPC64_DTPREL16_LO", /* name */
1380 FALSE
, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HI
,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE
, /* pc_relative */
1392 complain_overflow_signed
, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc
, /* special_function */
1394 "R_PPC64_DTPREL16_HI", /* name */
1395 FALSE
, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE
), /* pcrel_offset */
1400 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HA
,
1402 16, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_signed
, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc
, /* special_function */
1409 "R_PPC64_DTPREL16_HA", /* name */
1410 FALSE
, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE
, /* pc_relative */
1422 complain_overflow_dont
, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc
, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHER", /* name */
1425 FALSE
, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 FALSE
), /* pcrel_offset */
1430 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1432 32, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE
, /* pc_relative */
1437 complain_overflow_dont
, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc
, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHERA", /* name */
1440 FALSE
, /* partial_inplace */
1442 0xffff, /* dst_mask */
1443 FALSE
), /* pcrel_offset */
1445 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE
, /* pc_relative */
1452 complain_overflow_dont
, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc
, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHEST", /* name */
1455 FALSE
, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 FALSE
), /* pcrel_offset */
1460 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1461 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1462 48, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE
, /* pc_relative */
1467 complain_overflow_dont
, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc
, /* special_function */
1469 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1470 FALSE
, /* partial_inplace */
1472 0xffff, /* dst_mask */
1473 FALSE
), /* pcrel_offset */
1475 /* Like DTPREL16, but for insns with a DS field. */
1476 HOWTO (R_PPC64_DTPREL16_DS
,
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE
, /* pc_relative */
1482 complain_overflow_signed
, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc
, /* special_function */
1484 "R_PPC64_DTPREL16_DS", /* name */
1485 FALSE
, /* partial_inplace */
1487 0xfffc, /* dst_mask */
1488 FALSE
), /* pcrel_offset */
1490 /* Like DTPREL16_DS, but no overflow. */
1491 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE
, /* pc_relative */
1497 complain_overflow_dont
, /* complain_on_overflow */
1498 ppc64_elf_unhandled_reloc
, /* special_function */
1499 "R_PPC64_DTPREL16_LO_DS", /* name */
1500 FALSE
, /* partial_inplace */
1502 0xfffc, /* dst_mask */
1503 FALSE
), /* pcrel_offset */
1505 /* Computes a tp-relative displacement, the difference between the value of
1506 sym+add and the value of the thread pointer (r13). */
1507 HOWTO (R_PPC64_TPREL64
,
1509 4, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE
, /* pc_relative */
1513 complain_overflow_dont
, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc
, /* special_function */
1515 "R_PPC64_TPREL64", /* name */
1516 FALSE
, /* partial_inplace */
1518 ONES (64), /* dst_mask */
1519 FALSE
), /* pcrel_offset */
1521 /* A 16 bit tprel reloc. */
1522 HOWTO (R_PPC64_TPREL16
,
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE
, /* pc_relative */
1528 complain_overflow_signed
, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc
, /* special_function */
1530 "R_PPC64_TPREL16", /* name */
1531 FALSE
, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE
), /* pcrel_offset */
1536 /* Like TPREL16, but no overflow. */
1537 HOWTO (R_PPC64_TPREL16_LO
,
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE
, /* pc_relative */
1543 complain_overflow_dont
, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc
, /* special_function */
1545 "R_PPC64_TPREL16_LO", /* name */
1546 FALSE
, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE
), /* pcrel_offset */
1551 /* Like TPREL16_LO, but next higher group of 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HI
,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE
, /* pc_relative */
1558 complain_overflow_signed
, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc
, /* special_function */
1560 "R_PPC64_TPREL16_HI", /* name */
1561 FALSE
, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE
), /* pcrel_offset */
1566 /* Like TPREL16_HI, but adjust for low 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HA
,
1568 16, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE
, /* pc_relative */
1573 complain_overflow_signed
, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc
, /* special_function */
1575 "R_PPC64_TPREL16_HA", /* name */
1576 FALSE
, /* partial_inplace */
1578 0xffff, /* dst_mask */
1579 FALSE
), /* pcrel_offset */
1581 /* Like TPREL16_HI, but next higher group of 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHER
,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE
, /* pc_relative */
1588 complain_overflow_dont
, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc
, /* special_function */
1590 "R_PPC64_TPREL16_HIGHER", /* name */
1591 FALSE
, /* partial_inplace */
1593 0xffff, /* dst_mask */
1594 FALSE
), /* pcrel_offset */
1596 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1598 32, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1601 FALSE
, /* pc_relative */
1603 complain_overflow_dont
, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc
, /* special_function */
1605 "R_PPC64_TPREL16_HIGHERA", /* name */
1606 FALSE
, /* partial_inplace */
1608 0xffff, /* dst_mask */
1609 FALSE
), /* pcrel_offset */
1611 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1616 FALSE
, /* pc_relative */
1618 complain_overflow_dont
, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc
, /* special_function */
1620 "R_PPC64_TPREL16_HIGHEST", /* name */
1621 FALSE
, /* partial_inplace */
1623 0xffff, /* dst_mask */
1624 FALSE
), /* pcrel_offset */
1626 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1627 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1628 48, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE
, /* pc_relative */
1633 complain_overflow_dont
, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc
, /* special_function */
1635 "R_PPC64_TPREL16_HIGHESTA", /* name */
1636 FALSE
, /* partial_inplace */
1638 0xffff, /* dst_mask */
1639 FALSE
), /* pcrel_offset */
1641 /* Like TPREL16, but for insns with a DS field. */
1642 HOWTO (R_PPC64_TPREL16_DS
,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE
, /* pc_relative */
1648 complain_overflow_signed
, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc
, /* special_function */
1650 "R_PPC64_TPREL16_DS", /* name */
1651 FALSE
, /* partial_inplace */
1653 0xfffc, /* dst_mask */
1654 FALSE
), /* pcrel_offset */
1656 /* Like TPREL16_DS, but no overflow. */
1657 HOWTO (R_PPC64_TPREL16_LO_DS
,
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1661 FALSE
, /* pc_relative */
1663 complain_overflow_dont
, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc
, /* special_function */
1665 "R_PPC64_TPREL16_LO_DS", /* name */
1666 FALSE
, /* partial_inplace */
1668 0xfffc, /* dst_mask */
1669 FALSE
), /* pcrel_offset */
1671 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1672 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1673 to the first entry relative to the TOC base (r2). */
1674 HOWTO (R_PPC64_GOT_TLSGD16
,
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE
, /* pc_relative */
1680 complain_overflow_signed
, /* complain_on_overflow */
1681 ppc64_elf_unhandled_reloc
, /* special_function */
1682 "R_PPC64_GOT_TLSGD16", /* name */
1683 FALSE
, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 FALSE
), /* pcrel_offset */
1688 /* Like GOT_TLSGD16, but no overflow. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 FALSE
, /* pc_relative */
1695 complain_overflow_dont
, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc
, /* special_function */
1697 "R_PPC64_GOT_TLSGD16_LO", /* name */
1698 FALSE
, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 FALSE
), /* pcrel_offset */
1703 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 FALSE
, /* pc_relative */
1710 complain_overflow_signed
, /* complain_on_overflow */
1711 ppc64_elf_unhandled_reloc
, /* special_function */
1712 "R_PPC64_GOT_TLSGD16_HI", /* name */
1713 FALSE
, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 FALSE
), /* pcrel_offset */
1718 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1719 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 FALSE
, /* pc_relative */
1725 complain_overflow_signed
, /* complain_on_overflow */
1726 ppc64_elf_unhandled_reloc
, /* special_function */
1727 "R_PPC64_GOT_TLSGD16_HA", /* name */
1728 FALSE
, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 FALSE
), /* pcrel_offset */
1733 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1734 with values (sym+add)@dtpmod and zero, and computes the offset to the
1735 first entry relative to the TOC base (r2). */
1736 HOWTO (R_PPC64_GOT_TLSLD16
,
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE
, /* pc_relative */
1742 complain_overflow_signed
, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc
, /* special_function */
1744 "R_PPC64_GOT_TLSLD16", /* name */
1745 FALSE
, /* partial_inplace */
1747 0xffff, /* dst_mask */
1748 FALSE
), /* pcrel_offset */
1750 /* Like GOT_TLSLD16, but no overflow. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE
, /* pc_relative */
1757 complain_overflow_dont
, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc
, /* special_function */
1759 "R_PPC64_GOT_TLSLD16_LO", /* name */
1760 FALSE
, /* partial_inplace */
1762 0xffff, /* dst_mask */
1763 FALSE
), /* pcrel_offset */
1765 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1767 16, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE
, /* pc_relative */
1772 complain_overflow_signed
, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc
, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_HI", /* name */
1775 FALSE
, /* partial_inplace */
1777 0xffff, /* dst_mask */
1778 FALSE
), /* pcrel_offset */
1780 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1781 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1782 16, /* rightshift */
1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1785 FALSE
, /* pc_relative */
1787 complain_overflow_signed
, /* complain_on_overflow */
1788 ppc64_elf_unhandled_reloc
, /* special_function */
1789 "R_PPC64_GOT_TLSLD16_HA", /* name */
1790 FALSE
, /* partial_inplace */
1792 0xffff, /* dst_mask */
1793 FALSE
), /* pcrel_offset */
1795 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1796 the offset to the entry relative to the TOC base (r2). */
1797 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 FALSE
, /* pc_relative */
1803 complain_overflow_signed
, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc
, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_DS", /* name */
1806 FALSE
, /* partial_inplace */
1808 0xfffc, /* dst_mask */
1809 FALSE
), /* pcrel_offset */
1811 /* Like GOT_DTPREL16_DS, but no overflow. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE
, /* pc_relative */
1818 complain_overflow_dont
, /* complain_on_overflow */
1819 ppc64_elf_unhandled_reloc
, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1821 FALSE
, /* partial_inplace */
1823 0xfffc, /* dst_mask */
1824 FALSE
), /* pcrel_offset */
1826 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 FALSE
, /* pc_relative */
1833 complain_overflow_signed
, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc
, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HI", /* name */
1836 FALSE
, /* partial_inplace */
1838 0xffff, /* dst_mask */
1839 FALSE
), /* pcrel_offset */
1841 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1842 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1843 16, /* rightshift */
1844 1, /* size (0 = byte, 1 = short, 2 = long) */
1846 FALSE
, /* pc_relative */
1848 complain_overflow_signed
, /* complain_on_overflow */
1849 ppc64_elf_unhandled_reloc
, /* special_function */
1850 "R_PPC64_GOT_DTPREL16_HA", /* name */
1851 FALSE
, /* partial_inplace */
1853 0xffff, /* dst_mask */
1854 FALSE
), /* pcrel_offset */
1856 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1857 offset to the entry relative to the TOC base (r2). */
1858 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE
, /* pc_relative */
1864 complain_overflow_signed
, /* complain_on_overflow */
1865 ppc64_elf_unhandled_reloc
, /* special_function */
1866 "R_PPC64_GOT_TPREL16_DS", /* name */
1867 FALSE
, /* partial_inplace */
1869 0xfffc, /* dst_mask */
1870 FALSE
), /* pcrel_offset */
1872 /* Like GOT_TPREL16_DS, but no overflow. */
1873 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1877 FALSE
, /* pc_relative */
1879 complain_overflow_dont
, /* complain_on_overflow */
1880 ppc64_elf_unhandled_reloc
, /* special_function */
1881 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1882 FALSE
, /* partial_inplace */
1884 0xfffc, /* dst_mask */
1885 FALSE
), /* pcrel_offset */
1887 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1889 16, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE
, /* pc_relative */
1894 complain_overflow_signed
, /* complain_on_overflow */
1895 ppc64_elf_unhandled_reloc
, /* special_function */
1896 "R_PPC64_GOT_TPREL16_HI", /* name */
1897 FALSE
, /* partial_inplace */
1899 0xffff, /* dst_mask */
1900 FALSE
), /* pcrel_offset */
1902 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1903 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1904 16, /* rightshift */
1905 1, /* size (0 = byte, 1 = short, 2 = long) */
1907 FALSE
, /* pc_relative */
1909 complain_overflow_signed
, /* complain_on_overflow */
1910 ppc64_elf_unhandled_reloc
, /* special_function */
1911 "R_PPC64_GOT_TPREL16_HA", /* name */
1912 FALSE
, /* partial_inplace */
1914 0xffff, /* dst_mask */
1915 FALSE
), /* pcrel_offset */
1917 HOWTO (R_PPC64_JMP_IREL
, /* type */
1919 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1921 FALSE
, /* pc_relative */
1923 complain_overflow_dont
, /* complain_on_overflow */
1924 ppc64_elf_unhandled_reloc
, /* special_function */
1925 "R_PPC64_JMP_IREL", /* name */
1926 FALSE
, /* partial_inplace */
1929 FALSE
), /* pcrel_offset */
1931 HOWTO (R_PPC64_IRELATIVE
, /* type */
1933 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1935 FALSE
, /* pc_relative */
1937 complain_overflow_dont
, /* complain_on_overflow */
1938 bfd_elf_generic_reloc
, /* special_function */
1939 "R_PPC64_IRELATIVE", /* name */
1940 FALSE
, /* partial_inplace */
1942 ONES (64), /* dst_mask */
1943 FALSE
), /* pcrel_offset */
1945 /* A 16 bit relative relocation. */
1946 HOWTO (R_PPC64_REL16
, /* type */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1950 TRUE
, /* pc_relative */
1952 complain_overflow_signed
, /* complain_on_overflow */
1953 bfd_elf_generic_reloc
, /* special_function */
1954 "R_PPC64_REL16", /* name */
1955 FALSE
, /* partial_inplace */
1957 0xffff, /* dst_mask */
1958 TRUE
), /* pcrel_offset */
1960 /* A 16 bit relative relocation without overflow. */
1961 HOWTO (R_PPC64_REL16_LO
, /* type */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1965 TRUE
, /* pc_relative */
1967 complain_overflow_dont
,/* complain_on_overflow */
1968 bfd_elf_generic_reloc
, /* special_function */
1969 "R_PPC64_REL16_LO", /* name */
1970 FALSE
, /* partial_inplace */
1972 0xffff, /* dst_mask */
1973 TRUE
), /* pcrel_offset */
1975 /* The high order 16 bits of a relative address. */
1976 HOWTO (R_PPC64_REL16_HI
, /* type */
1977 16, /* rightshift */
1978 1, /* size (0 = byte, 1 = short, 2 = long) */
1980 TRUE
, /* pc_relative */
1982 complain_overflow_signed
, /* complain_on_overflow */
1983 bfd_elf_generic_reloc
, /* special_function */
1984 "R_PPC64_REL16_HI", /* name */
1985 FALSE
, /* partial_inplace */
1987 0xffff, /* dst_mask */
1988 TRUE
), /* pcrel_offset */
1990 /* The high order 16 bits of a relative address, plus 1 if the contents of
1991 the low 16 bits, treated as a signed number, is negative. */
1992 HOWTO (R_PPC64_REL16_HA
, /* type */
1993 16, /* rightshift */
1994 1, /* size (0 = byte, 1 = short, 2 = long) */
1996 TRUE
, /* pc_relative */
1998 complain_overflow_signed
, /* complain_on_overflow */
1999 ppc64_elf_ha_reloc
, /* special_function */
2000 "R_PPC64_REL16_HA", /* name */
2001 FALSE
, /* partial_inplace */
2003 0xffff, /* dst_mask */
2004 TRUE
), /* pcrel_offset */
2006 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2007 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2008 16, /* rightshift */
2009 1, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE
, /* pc_relative */
2013 complain_overflow_dont
, /* complain_on_overflow */
2014 bfd_elf_generic_reloc
, /* special_function */
2015 "R_PPC64_ADDR16_HIGH", /* name */
2016 FALSE
, /* partial_inplace */
2018 0xffff, /* dst_mask */
2019 FALSE
), /* pcrel_offset */
2021 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2022 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2023 16, /* rightshift */
2024 1, /* size (0 = byte, 1 = short, 2 = long) */
2026 FALSE
, /* pc_relative */
2028 complain_overflow_dont
, /* complain_on_overflow */
2029 ppc64_elf_ha_reloc
, /* special_function */
2030 "R_PPC64_ADDR16_HIGHA", /* name */
2031 FALSE
, /* partial_inplace */
2033 0xffff, /* dst_mask */
2034 FALSE
), /* pcrel_offset */
2036 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2037 HOWTO (R_PPC64_DTPREL16_HIGH
,
2038 16, /* rightshift */
2039 1, /* size (0 = byte, 1 = short, 2 = long) */
2041 FALSE
, /* pc_relative */
2043 complain_overflow_dont
, /* complain_on_overflow */
2044 ppc64_elf_unhandled_reloc
, /* special_function */
2045 "R_PPC64_DTPREL16_HIGH", /* name */
2046 FALSE
, /* partial_inplace */
2048 0xffff, /* dst_mask */
2049 FALSE
), /* pcrel_offset */
2051 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2052 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2053 16, /* rightshift */
2054 1, /* size (0 = byte, 1 = short, 2 = long) */
2056 FALSE
, /* pc_relative */
2058 complain_overflow_dont
, /* complain_on_overflow */
2059 ppc64_elf_unhandled_reloc
, /* special_function */
2060 "R_PPC64_DTPREL16_HIGHA", /* name */
2061 FALSE
, /* partial_inplace */
2063 0xffff, /* dst_mask */
2064 FALSE
), /* pcrel_offset */
2066 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2067 HOWTO (R_PPC64_TPREL16_HIGH
,
2068 16, /* rightshift */
2069 1, /* size (0 = byte, 1 = short, 2 = long) */
2071 FALSE
, /* pc_relative */
2073 complain_overflow_dont
, /* complain_on_overflow */
2074 ppc64_elf_unhandled_reloc
, /* special_function */
2075 "R_PPC64_TPREL16_HIGH", /* name */
2076 FALSE
, /* partial_inplace */
2078 0xffff, /* dst_mask */
2079 FALSE
), /* pcrel_offset */
2081 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2082 HOWTO (R_PPC64_TPREL16_HIGHA
,
2083 16, /* rightshift */
2084 1, /* size (0 = byte, 1 = short, 2 = long) */
2086 FALSE
, /* pc_relative */
2088 complain_overflow_dont
, /* complain_on_overflow */
2089 ppc64_elf_unhandled_reloc
, /* special_function */
2090 "R_PPC64_TPREL16_HIGHA", /* name */
2091 FALSE
, /* partial_inplace */
2093 0xffff, /* dst_mask */
2094 FALSE
), /* pcrel_offset */
2096 /* Like ADDR64, but use local entry point of function. */
2097 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2099 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2101 FALSE
, /* pc_relative */
2103 complain_overflow_dont
, /* complain_on_overflow */
2104 bfd_elf_generic_reloc
, /* special_function */
2105 "R_PPC64_ADDR64_LOCAL", /* name */
2106 FALSE
, /* partial_inplace */
2108 ONES (64), /* dst_mask */
2109 FALSE
), /* pcrel_offset */
2111 /* GNU extension to record C++ vtable hierarchy. */
2112 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2114 0, /* size (0 = byte, 1 = short, 2 = long) */
2116 FALSE
, /* pc_relative */
2118 complain_overflow_dont
, /* complain_on_overflow */
2119 NULL
, /* special_function */
2120 "R_PPC64_GNU_VTINHERIT", /* name */
2121 FALSE
, /* partial_inplace */
2124 FALSE
), /* pcrel_offset */
2126 /* GNU extension to record C++ vtable member usage. */
2127 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2129 0, /* size (0 = byte, 1 = short, 2 = long) */
2131 FALSE
, /* pc_relative */
2133 complain_overflow_dont
, /* complain_on_overflow */
2134 NULL
, /* special_function */
2135 "R_PPC64_GNU_VTENTRY", /* name */
2136 FALSE
, /* partial_inplace */
2139 FALSE
), /* pcrel_offset */
2143 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2147 ppc_howto_init (void)
2149 unsigned int i
, type
;
2152 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2155 type
= ppc64_elf_howto_raw
[i
].type
;
2156 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2157 / sizeof (ppc64_elf_howto_table
[0])));
2158 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2162 static reloc_howto_type
*
2163 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2164 bfd_reloc_code_real_type code
)
2166 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2168 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2169 /* Initialize howto table if needed. */
2177 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2179 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2181 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2183 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2185 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2187 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2189 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2191 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2193 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2195 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2197 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2199 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2201 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2203 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2205 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2207 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2209 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2211 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2213 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2215 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2217 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2219 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2221 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2223 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2225 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2227 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2229 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2231 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2233 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2235 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2237 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2239 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2241 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2243 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2245 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2247 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2249 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2251 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2253 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2255 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2257 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2259 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2261 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2263 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2265 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2267 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2269 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2271 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2273 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2275 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2277 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2279 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2281 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2283 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2285 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2287 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2289 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2291 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2293 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2295 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2297 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2299 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2301 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2303 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2305 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2307 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2309 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2311 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2313 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2315 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2317 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2319 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2321 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2323 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2325 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2327 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2329 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2331 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2333 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2335 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2337 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2339 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2341 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2343 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2345 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2347 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2349 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2351 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2353 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2355 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2357 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2359 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2361 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2363 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2365 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2367 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2369 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2371 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2373 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2375 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2377 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2379 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2381 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2383 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2385 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2387 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2389 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2391 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2393 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2395 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2397 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2399 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2401 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2403 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2407 return ppc64_elf_howto_table
[r
];
2410 static reloc_howto_type
*
2411 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2417 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2419 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2420 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2421 return &ppc64_elf_howto_raw
[i
];
2426 /* Set the howto pointer for a PowerPC ELF reloc. */
2429 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2430 Elf_Internal_Rela
*dst
)
2434 /* Initialize howto table if needed. */
2435 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2438 type
= ELF64_R_TYPE (dst
->r_info
);
2439 if (type
>= (sizeof (ppc64_elf_howto_table
)
2440 / sizeof (ppc64_elf_howto_table
[0])))
2442 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2444 type
= R_PPC64_NONE
;
2446 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2449 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2451 static bfd_reloc_status_type
2452 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2453 void *data
, asection
*input_section
,
2454 bfd
*output_bfd
, char **error_message
)
2456 /* If this is a relocatable link (output_bfd test tells us), just
2457 call the generic function. Any adjustment will be done at final
2459 if (output_bfd
!= NULL
)
2460 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2461 input_section
, output_bfd
, error_message
);
2463 /* Adjust the addend for sign extension of the low 16 bits.
2464 We won't actually be using the low 16 bits, so trashing them
2466 reloc_entry
->addend
+= 0x8000;
2467 return bfd_reloc_continue
;
2470 static bfd_reloc_status_type
2471 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2472 void *data
, asection
*input_section
,
2473 bfd
*output_bfd
, char **error_message
)
2475 if (output_bfd
!= NULL
)
2476 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2477 input_section
, output_bfd
, error_message
);
2479 if (strcmp (symbol
->section
->name
, ".opd") == 0
2480 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2482 bfd_vma dest
= opd_entry_value (symbol
->section
,
2483 symbol
->value
+ reloc_entry
->addend
,
2485 if (dest
!= (bfd_vma
) -1)
2486 reloc_entry
->addend
= dest
- (symbol
->value
2487 + symbol
->section
->output_section
->vma
2488 + symbol
->section
->output_offset
);
2490 return bfd_reloc_continue
;
2493 static bfd_reloc_status_type
2494 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2495 void *data
, asection
*input_section
,
2496 bfd
*output_bfd
, char **error_message
)
2499 enum elf_ppc64_reloc_type r_type
;
2500 bfd_size_type octets
;
2501 /* Assume 'at' branch hints. */
2502 bfd_boolean is_isa_v2
= TRUE
;
2504 /* If this is a relocatable link (output_bfd test tells us), just
2505 call the generic function. Any adjustment will be done at final
2507 if (output_bfd
!= NULL
)
2508 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2509 input_section
, output_bfd
, error_message
);
2511 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2512 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2513 insn
&= ~(0x01 << 21);
2514 r_type
= reloc_entry
->howto
->type
;
2515 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2516 || r_type
== R_PPC64_REL14_BRTAKEN
)
2517 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2521 /* Set 'a' bit. This is 0b00010 in BO field for branch
2522 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2523 for branch on CTR insns (BO == 1a00t or 1a01t). */
2524 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2526 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2536 if (!bfd_is_com_section (symbol
->section
))
2537 target
= symbol
->value
;
2538 target
+= symbol
->section
->output_section
->vma
;
2539 target
+= symbol
->section
->output_offset
;
2540 target
+= reloc_entry
->addend
;
2542 from
= (reloc_entry
->address
2543 + input_section
->output_offset
2544 + input_section
->output_section
->vma
);
2546 /* Invert 'y' bit if not the default. */
2547 if ((bfd_signed_vma
) (target
- from
) < 0)
2550 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2552 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2553 input_section
, output_bfd
, error_message
);
2556 static bfd_reloc_status_type
2557 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2558 void *data
, asection
*input_section
,
2559 bfd
*output_bfd
, char **error_message
)
2561 /* If this is a relocatable link (output_bfd test tells us), just
2562 call the generic function. Any adjustment will be done at final
2564 if (output_bfd
!= NULL
)
2565 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2566 input_section
, output_bfd
, error_message
);
2568 /* Subtract the symbol section base address. */
2569 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2570 return bfd_reloc_continue
;
2573 static bfd_reloc_status_type
2574 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2575 void *data
, asection
*input_section
,
2576 bfd
*output_bfd
, char **error_message
)
2578 /* If this is a relocatable link (output_bfd test tells us), just
2579 call the generic function. Any adjustment will be done at final
2581 if (output_bfd
!= NULL
)
2582 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2583 input_section
, output_bfd
, error_message
);
2585 /* Subtract the symbol section base address. */
2586 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2588 /* Adjust the addend for sign extension of the low 16 bits. */
2589 reloc_entry
->addend
+= 0x8000;
2590 return bfd_reloc_continue
;
2593 static bfd_reloc_status_type
2594 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2595 void *data
, asection
*input_section
,
2596 bfd
*output_bfd
, char **error_message
)
2600 /* If this is a relocatable link (output_bfd test tells us), just
2601 call the generic function. Any adjustment will be done at final
2603 if (output_bfd
!= NULL
)
2604 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2605 input_section
, output_bfd
, error_message
);
2607 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2609 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2611 /* Subtract the TOC base address. */
2612 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2613 return bfd_reloc_continue
;
2616 static bfd_reloc_status_type
2617 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2618 void *data
, asection
*input_section
,
2619 bfd
*output_bfd
, char **error_message
)
2623 /* If this is a relocatable link (output_bfd test tells us), just
2624 call the generic function. Any adjustment will be done at final
2626 if (output_bfd
!= NULL
)
2627 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2628 input_section
, output_bfd
, error_message
);
2630 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2632 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2634 /* Subtract the TOC base address. */
2635 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2637 /* Adjust the addend for sign extension of the low 16 bits. */
2638 reloc_entry
->addend
+= 0x8000;
2639 return bfd_reloc_continue
;
2642 static bfd_reloc_status_type
2643 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2644 void *data
, asection
*input_section
,
2645 bfd
*output_bfd
, char **error_message
)
2648 bfd_size_type octets
;
2650 /* If this is a relocatable link (output_bfd test tells us), just
2651 call the generic function. Any adjustment will be done at final
2653 if (output_bfd
!= NULL
)
2654 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2655 input_section
, output_bfd
, error_message
);
2657 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2659 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2661 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2662 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2663 return bfd_reloc_ok
;
2666 static bfd_reloc_status_type
2667 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2668 void *data
, asection
*input_section
,
2669 bfd
*output_bfd
, char **error_message
)
2671 /* If this is a relocatable link (output_bfd test tells us), just
2672 call the generic function. Any adjustment will be done at final
2674 if (output_bfd
!= NULL
)
2675 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2676 input_section
, output_bfd
, error_message
);
2678 if (error_message
!= NULL
)
2680 static char buf
[60];
2681 sprintf (buf
, "generic linker can't handle %s",
2682 reloc_entry
->howto
->name
);
2683 *error_message
= buf
;
2685 return bfd_reloc_dangerous
;
2688 /* Track GOT entries needed for a given symbol. We might need more
2689 than one got entry per symbol. */
2692 struct got_entry
*next
;
2694 /* The symbol addend that we'll be placing in the GOT. */
2697 /* Unlike other ELF targets, we use separate GOT entries for the same
2698 symbol referenced from different input files. This is to support
2699 automatic multiple TOC/GOT sections, where the TOC base can vary
2700 from one input file to another. After partitioning into TOC groups
2701 we merge entries within the group.
2703 Point to the BFD owning this GOT entry. */
2706 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2707 TLS_TPREL or TLS_DTPREL for tls entries. */
2708 unsigned char tls_type
;
2710 /* Non-zero if got.ent points to real entry. */
2711 unsigned char is_indirect
;
2713 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2716 bfd_signed_vma refcount
;
2718 struct got_entry
*ent
;
2722 /* The same for PLT. */
2725 struct plt_entry
*next
;
2731 bfd_signed_vma refcount
;
2736 struct ppc64_elf_obj_tdata
2738 struct elf_obj_tdata elf
;
2740 /* Shortcuts to dynamic linker sections. */
2744 /* Used during garbage collection. We attach global symbols defined
2745 on removed .opd entries to this section so that the sym is removed. */
2746 asection
*deleted_section
;
2748 /* TLS local dynamic got entry handling. Support for multiple GOT
2749 sections means we potentially need one of these for each input bfd. */
2750 struct got_entry tlsld_got
;
2753 /* A copy of relocs before they are modified for --emit-relocs. */
2754 Elf_Internal_Rela
*relocs
;
2756 /* Section contents. */
2760 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2761 the reloc to be in the range -32768 to 32767. */
2762 unsigned int has_small_toc_reloc
: 1;
2764 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2765 instruction not one we handle. */
2766 unsigned int unexpected_toc_insn
: 1;
2769 #define ppc64_elf_tdata(bfd) \
2770 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2772 #define ppc64_tlsld_got(bfd) \
2773 (&ppc64_elf_tdata (bfd)->tlsld_got)
2775 #define is_ppc64_elf(bfd) \
2776 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2777 && elf_object_id (bfd) == PPC64_ELF_DATA)
2779 /* Override the generic function because we store some extras. */
2782 ppc64_elf_mkobject (bfd
*abfd
)
2784 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2788 /* Fix bad default arch selected for a 64 bit input bfd when the
2789 default is 32 bit. */
2792 ppc64_elf_object_p (bfd
*abfd
)
2794 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2796 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2798 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2800 /* Relies on arch after 32 bit default being 64 bit default. */
2801 abfd
->arch_info
= abfd
->arch_info
->next
;
2802 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2808 /* Support for core dump NOTE sections. */
2811 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2813 size_t offset
, size
;
2815 if (note
->descsz
!= 504)
2819 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2822 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2828 /* Make a ".reg/999" section. */
2829 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2830 size
, note
->descpos
+ offset
);
2834 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2836 if (note
->descsz
!= 136)
2839 elf_tdata (abfd
)->core
->pid
2840 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2841 elf_tdata (abfd
)->core
->program
2842 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2843 elf_tdata (abfd
)->core
->command
2844 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2850 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2863 va_start (ap
, note_type
);
2864 memset (data
, 0, sizeof (data
));
2865 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2866 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2868 return elfcore_write_note (abfd
, buf
, bufsiz
,
2869 "CORE", note_type
, data
, sizeof (data
));
2880 va_start (ap
, note_type
);
2881 memset (data
, 0, 112);
2882 pid
= va_arg (ap
, long);
2883 bfd_put_32 (abfd
, pid
, data
+ 32);
2884 cursig
= va_arg (ap
, int);
2885 bfd_put_16 (abfd
, cursig
, data
+ 12);
2886 greg
= va_arg (ap
, const void *);
2887 memcpy (data
+ 112, greg
, 384);
2888 memset (data
+ 496, 0, 8);
2890 return elfcore_write_note (abfd
, buf
, bufsiz
,
2891 "CORE", note_type
, data
, sizeof (data
));
2896 /* Add extra PPC sections. */
2898 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2900 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2901 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2902 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2903 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2904 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2905 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2906 { NULL
, 0, 0, 0, 0 }
2909 enum _ppc64_sec_type
{
2915 struct _ppc64_elf_section_data
2917 struct bfd_elf_section_data elf
;
2921 /* An array with one entry for each opd function descriptor. */
2922 struct _opd_sec_data
2924 /* Points to the function code section for local opd entries. */
2925 asection
**func_sec
;
2927 /* After editing .opd, adjust references to opd local syms. */
2931 /* An array for toc sections, indexed by offset/8. */
2932 struct _toc_sec_data
2934 /* Specifies the relocation symbol index used at a given toc offset. */
2937 /* And the relocation addend. */
2942 enum _ppc64_sec_type sec_type
:2;
2944 /* Flag set when small branches are detected. Used to
2945 select suitable defaults for the stub group size. */
2946 unsigned int has_14bit_branch
:1;
2949 #define ppc64_elf_section_data(sec) \
2950 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2953 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2955 if (!sec
->used_by_bfd
)
2957 struct _ppc64_elf_section_data
*sdata
;
2958 bfd_size_type amt
= sizeof (*sdata
);
2960 sdata
= bfd_zalloc (abfd
, amt
);
2963 sec
->used_by_bfd
= sdata
;
2966 return _bfd_elf_new_section_hook (abfd
, sec
);
2969 static struct _opd_sec_data
*
2970 get_opd_info (asection
* sec
)
2973 && ppc64_elf_section_data (sec
) != NULL
2974 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2975 return &ppc64_elf_section_data (sec
)->u
.opd
;
2980 abiversion (bfd
*abfd
)
2982 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
2986 set_abiversion (bfd
*abfd
, int ver
)
2988 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
2989 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
2992 /* Parameters for the qsort hook. */
2993 static bfd_boolean synthetic_relocatable
;
2995 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2998 compare_symbols (const void *ap
, const void *bp
)
3000 const asymbol
*a
= * (const asymbol
**) ap
;
3001 const asymbol
*b
= * (const asymbol
**) bp
;
3003 /* Section symbols first. */
3004 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3006 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3009 /* then .opd symbols. */
3010 if (strcmp (a
->section
->name
, ".opd") == 0
3011 && strcmp (b
->section
->name
, ".opd") != 0)
3013 if (strcmp (a
->section
->name
, ".opd") != 0
3014 && strcmp (b
->section
->name
, ".opd") == 0)
3017 /* then other code symbols. */
3018 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3019 == (SEC_CODE
| SEC_ALLOC
)
3020 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3021 != (SEC_CODE
| SEC_ALLOC
))
3024 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3025 != (SEC_CODE
| SEC_ALLOC
)
3026 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3027 == (SEC_CODE
| SEC_ALLOC
))
3030 if (synthetic_relocatable
)
3032 if (a
->section
->id
< b
->section
->id
)
3035 if (a
->section
->id
> b
->section
->id
)
3039 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3042 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3045 /* For syms with the same value, prefer strong dynamic global function
3046 syms over other syms. */
3047 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3050 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3053 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3056 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3059 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3062 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3065 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3068 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3074 /* Search SYMS for a symbol of the given VALUE. */
3077 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
3085 mid
= (lo
+ hi
) >> 1;
3086 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3088 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3098 mid
= (lo
+ hi
) >> 1;
3099 if (syms
[mid
]->section
->id
< id
)
3101 else if (syms
[mid
]->section
->id
> id
)
3103 else if (syms
[mid
]->value
< value
)
3105 else if (syms
[mid
]->value
> value
)
3115 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3117 bfd_vma vma
= *(bfd_vma
*) ptr
;
3118 return ((section
->flags
& SEC_ALLOC
) != 0
3119 && section
->vma
<= vma
3120 && vma
< section
->vma
+ section
->size
);
3123 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3124 entry syms. Also generate @plt symbols for the glink branch table. */
3127 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3128 long static_count
, asymbol
**static_syms
,
3129 long dyn_count
, asymbol
**dyn_syms
,
3136 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3137 asection
*opd
= NULL
;
3138 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3140 int abi
= abiversion (abfd
);
3146 opd
= bfd_get_section_by_name (abfd
, ".opd");
3147 if (opd
== NULL
&& abi
== 1)
3151 symcount
= static_count
;
3153 symcount
+= dyn_count
;
3157 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3161 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3163 /* Use both symbol tables. */
3164 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3165 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3167 else if (!relocatable
&& static_count
== 0)
3168 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3170 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3172 synthetic_relocatable
= relocatable
;
3173 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3175 if (!relocatable
&& symcount
> 1)
3178 /* Trim duplicate syms, since we may have merged the normal and
3179 dynamic symbols. Actually, we only care about syms that have
3180 different values, so trim any with the same value. */
3181 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3182 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3183 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3184 syms
[j
++] = syms
[i
];
3189 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3193 for (; i
< symcount
; ++i
)
3194 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3195 != (SEC_CODE
| SEC_ALLOC
))
3196 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3200 for (; i
< symcount
; ++i
)
3201 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3205 for (; i
< symcount
; ++i
)
3206 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3210 for (; i
< symcount
; ++i
)
3211 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3212 != (SEC_CODE
| SEC_ALLOC
))
3220 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3225 if (opdsymend
== secsymend
)
3228 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3229 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3233 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3240 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3244 while (r
< opd
->relocation
+ relcount
3245 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3248 if (r
== opd
->relocation
+ relcount
)
3251 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3254 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3257 sym
= *r
->sym_ptr_ptr
;
3258 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3259 sym
->section
->id
, sym
->value
+ r
->addend
))
3262 size
+= sizeof (asymbol
);
3263 size
+= strlen (syms
[i
]->name
) + 2;
3267 s
= *ret
= bfd_malloc (size
);
3274 names
= (char *) (s
+ count
);
3276 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3280 while (r
< opd
->relocation
+ relcount
3281 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3284 if (r
== opd
->relocation
+ relcount
)
3287 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3290 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3293 sym
= *r
->sym_ptr_ptr
;
3294 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3295 sym
->section
->id
, sym
->value
+ r
->addend
))
3300 s
->flags
|= BSF_SYNTHETIC
;
3301 s
->section
= sym
->section
;
3302 s
->value
= sym
->value
+ r
->addend
;
3305 len
= strlen (syms
[i
]->name
);
3306 memcpy (names
, syms
[i
]->name
, len
+ 1);
3308 /* Have udata.p point back to the original symbol this
3309 synthetic symbol was derived from. */
3310 s
->udata
.p
= syms
[i
];
3317 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3318 bfd_byte
*contents
= NULL
;
3321 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3322 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3325 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3327 free_contents_and_exit
:
3335 for (i
= secsymend
; i
< opdsymend
; ++i
)
3339 /* Ignore bogus symbols. */
3340 if (syms
[i
]->value
> opd
->size
- 8)
3343 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3344 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3347 size
+= sizeof (asymbol
);
3348 size
+= strlen (syms
[i
]->name
) + 2;
3352 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3354 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3356 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3358 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3360 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3361 goto free_contents_and_exit
;
3363 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3364 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3367 extdynend
= extdyn
+ dynamic
->size
;
3368 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3370 Elf_Internal_Dyn dyn
;
3371 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3373 if (dyn
.d_tag
== DT_NULL
)
3376 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3378 /* The first glink stub starts at offset 32; see
3379 comment in ppc64_elf_finish_dynamic_sections. */
3380 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3381 /* The .glink section usually does not survive the final
3382 link; search for the section (usually .text) where the
3383 glink stubs now reside. */
3384 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3395 /* Determine __glink trampoline by reading the relative branch
3396 from the first glink stub. */
3398 unsigned int off
= 0;
3400 while (bfd_get_section_contents (abfd
, glink
, buf
,
3401 glink_vma
+ off
- glink
->vma
, 4))
3403 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3405 if ((insn
& ~0x3fffffc) == 0)
3407 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3416 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3418 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3421 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3422 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3423 goto free_contents_and_exit
;
3425 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3426 size
+= plt_count
* sizeof (asymbol
);
3428 p
= relplt
->relocation
;
3429 for (i
= 0; i
< plt_count
; i
++, p
++)
3431 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3433 size
+= sizeof ("+0x") - 1 + 16;
3438 s
= *ret
= bfd_malloc (size
);
3440 goto free_contents_and_exit
;
3442 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3444 for (i
= secsymend
; i
< opdsymend
; ++i
)
3448 if (syms
[i
]->value
> opd
->size
- 8)
3451 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3452 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3456 asection
*sec
= abfd
->sections
;
3463 long mid
= (lo
+ hi
) >> 1;
3464 if (syms
[mid
]->section
->vma
< ent
)
3466 else if (syms
[mid
]->section
->vma
> ent
)
3470 sec
= syms
[mid
]->section
;
3475 if (lo
>= hi
&& lo
> codesecsym
)
3476 sec
= syms
[lo
- 1]->section
;
3478 for (; sec
!= NULL
; sec
= sec
->next
)
3482 /* SEC_LOAD may not be set if SEC is from a separate debug
3484 if ((sec
->flags
& SEC_ALLOC
) == 0)
3486 if ((sec
->flags
& SEC_CODE
) != 0)
3489 s
->flags
|= BSF_SYNTHETIC
;
3490 s
->value
= ent
- s
->section
->vma
;
3493 len
= strlen (syms
[i
]->name
);
3494 memcpy (names
, syms
[i
]->name
, len
+ 1);
3496 /* Have udata.p point back to the original symbol this
3497 synthetic symbol was derived from. */
3498 s
->udata
.p
= syms
[i
];
3504 if (glink
!= NULL
&& relplt
!= NULL
)
3508 /* Add a symbol for the main glink trampoline. */
3509 memset (s
, 0, sizeof *s
);
3511 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3513 s
->value
= resolv_vma
- glink
->vma
;
3515 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3516 names
+= sizeof ("__glink_PLTresolve");
3521 /* FIXME: It would be very much nicer to put sym@plt on the
3522 stub rather than on the glink branch table entry. The
3523 objdump disassembler would then use a sensible symbol
3524 name on plt calls. The difficulty in doing so is
3525 a) finding the stubs, and,
3526 b) matching stubs against plt entries, and,
3527 c) there can be multiple stubs for a given plt entry.
3529 Solving (a) could be done by code scanning, but older
3530 ppc64 binaries used different stubs to current code.
3531 (b) is the tricky one since you need to known the toc
3532 pointer for at least one function that uses a pic stub to
3533 be able to calculate the plt address referenced.
3534 (c) means gdb would need to set multiple breakpoints (or
3535 find the glink branch itself) when setting breakpoints
3536 for pending shared library loads. */
3537 p
= relplt
->relocation
;
3538 for (i
= 0; i
< plt_count
; i
++, p
++)
3542 *s
= **p
->sym_ptr_ptr
;
3543 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3544 we are defining a symbol, ensure one of them is set. */
3545 if ((s
->flags
& BSF_LOCAL
) == 0)
3546 s
->flags
|= BSF_GLOBAL
;
3547 s
->flags
|= BSF_SYNTHETIC
;
3549 s
->value
= glink_vma
- glink
->vma
;
3552 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3553 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3557 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3558 names
+= sizeof ("+0x") - 1;
3559 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3560 names
+= strlen (names
);
3562 memcpy (names
, "@plt", sizeof ("@plt"));
3563 names
+= sizeof ("@plt");
3583 /* The following functions are specific to the ELF linker, while
3584 functions above are used generally. Those named ppc64_elf_* are
3585 called by the main ELF linker code. They appear in this file more
3586 or less in the order in which they are called. eg.
3587 ppc64_elf_check_relocs is called early in the link process,
3588 ppc64_elf_finish_dynamic_sections is one of the last functions
3591 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3592 functions have both a function code symbol and a function descriptor
3593 symbol. A call to foo in a relocatable object file looks like:
3600 The function definition in another object file might be:
3604 . .quad .TOC.@tocbase
3610 When the linker resolves the call during a static link, the branch
3611 unsurprisingly just goes to .foo and the .opd information is unused.
3612 If the function definition is in a shared library, things are a little
3613 different: The call goes via a plt call stub, the opd information gets
3614 copied to the plt, and the linker patches the nop.
3622 . std 2,40(1) # in practice, the call stub
3623 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3624 . addi 11,11,Lfoo@toc@l # this is the general idea
3632 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3634 The "reloc ()" notation is supposed to indicate that the linker emits
3635 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3638 What are the difficulties here? Well, firstly, the relocations
3639 examined by the linker in check_relocs are against the function code
3640 sym .foo, while the dynamic relocation in the plt is emitted against
3641 the function descriptor symbol, foo. Somewhere along the line, we need
3642 to carefully copy dynamic link information from one symbol to the other.
3643 Secondly, the generic part of the elf linker will make .foo a dynamic
3644 symbol as is normal for most other backends. We need foo dynamic
3645 instead, at least for an application final link. However, when
3646 creating a shared library containing foo, we need to have both symbols
3647 dynamic so that references to .foo are satisfied during the early
3648 stages of linking. Otherwise the linker might decide to pull in a
3649 definition from some other object, eg. a static library.
3651 Update: As of August 2004, we support a new convention. Function
3652 calls may use the function descriptor symbol, ie. "bl foo". This
3653 behaves exactly as "bl .foo". */
3655 /* Of those relocs that might be copied as dynamic relocs, this function
3656 selects those that must be copied when linking a shared library,
3657 even when the symbol is local. */
3660 must_be_dyn_reloc (struct bfd_link_info
*info
,
3661 enum elf_ppc64_reloc_type r_type
)
3673 case R_PPC64_TPREL16
:
3674 case R_PPC64_TPREL16_LO
:
3675 case R_PPC64_TPREL16_HI
:
3676 case R_PPC64_TPREL16_HA
:
3677 case R_PPC64_TPREL16_DS
:
3678 case R_PPC64_TPREL16_LO_DS
:
3679 case R_PPC64_TPREL16_HIGH
:
3680 case R_PPC64_TPREL16_HIGHA
:
3681 case R_PPC64_TPREL16_HIGHER
:
3682 case R_PPC64_TPREL16_HIGHERA
:
3683 case R_PPC64_TPREL16_HIGHEST
:
3684 case R_PPC64_TPREL16_HIGHESTA
:
3685 case R_PPC64_TPREL64
:
3686 return !info
->executable
;
3690 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3691 copying dynamic variables from a shared lib into an app's dynbss
3692 section, and instead use a dynamic relocation to point into the
3693 shared lib. With code that gcc generates, it's vital that this be
3694 enabled; In the PowerPC64 ABI, the address of a function is actually
3695 the address of a function descriptor, which resides in the .opd
3696 section. gcc uses the descriptor directly rather than going via the
3697 GOT as some other ABI's do, which means that initialized function
3698 pointers must reference the descriptor. Thus, a function pointer
3699 initialized to the address of a function in a shared library will
3700 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3701 redefines the function descriptor symbol to point to the copy. This
3702 presents a problem as a plt entry for that function is also
3703 initialized from the function descriptor symbol and the copy reloc
3704 may not be initialized first. */
3705 #define ELIMINATE_COPY_RELOCS 1
3707 /* Section name for stubs is the associated section name plus this
3709 #define STUB_SUFFIX ".stub"
3712 ppc_stub_long_branch:
3713 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3714 destination, but a 24 bit branch in a stub section will reach.
3717 ppc_stub_plt_branch:
3718 Similar to the above, but a 24 bit branch in the stub section won't
3719 reach its destination.
3720 . addis %r11,%r2,xxx@toc@ha
3721 . ld %r12,xxx@toc@l(%r11)
3726 Used to call a function in a shared library. If it so happens that
3727 the plt entry referenced crosses a 64k boundary, then an extra
3728 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3730 . addis %r11,%r2,xxx@toc@ha
3731 . ld %r12,xxx+0@toc@l(%r11)
3733 . ld %r2,xxx+8@toc@l(%r11)
3734 . ld %r11,xxx+16@toc@l(%r11)
3737 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3738 code to adjust the value and save r2 to support multiple toc sections.
3739 A ppc_stub_long_branch with an r2 offset looks like:
3741 . addis %r2,%r2,off@ha
3742 . addi %r2,%r2,off@l
3745 A ppc_stub_plt_branch with an r2 offset looks like:
3747 . addis %r11,%r2,xxx@toc@ha
3748 . ld %r12,xxx@toc@l(%r11)
3749 . addis %r2,%r2,off@ha
3750 . addi %r2,%r2,off@l
3754 In cases where the "addis" instruction would add zero, the "addis" is
3755 omitted and following instructions modified slightly in some cases.
3758 enum ppc_stub_type
{
3760 ppc_stub_long_branch
,
3761 ppc_stub_long_branch_r2off
,
3762 ppc_stub_plt_branch
,
3763 ppc_stub_plt_branch_r2off
,
3765 ppc_stub_plt_call_r2save
3768 struct ppc_stub_hash_entry
{
3770 /* Base hash table entry structure. */
3771 struct bfd_hash_entry root
;
3773 enum ppc_stub_type stub_type
;
3775 /* The stub section. */
3778 /* Offset within stub_sec of the beginning of this stub. */
3779 bfd_vma stub_offset
;
3781 /* Given the symbol's value and its section we can determine its final
3782 value when building the stubs (so the stub knows where to jump. */
3783 bfd_vma target_value
;
3784 asection
*target_section
;
3786 /* The symbol table entry, if any, that this was derived from. */
3787 struct ppc_link_hash_entry
*h
;
3788 struct plt_entry
*plt_ent
;
3790 /* Where this stub is being called from, or, in the case of combined
3791 stub sections, the first input section in the group. */
3794 /* Symbol st_other. */
3795 unsigned char other
;
3798 struct ppc_branch_hash_entry
{
3800 /* Base hash table entry structure. */
3801 struct bfd_hash_entry root
;
3803 /* Offset within branch lookup table. */
3804 unsigned int offset
;
3806 /* Generation marker. */
3810 /* Used to track dynamic relocations for local symbols. */
3811 struct ppc_dyn_relocs
3813 struct ppc_dyn_relocs
*next
;
3815 /* The input section of the reloc. */
3818 /* Total number of relocs copied for the input section. */
3819 unsigned int count
: 31;
3821 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3822 unsigned int ifunc
: 1;
3825 struct ppc_link_hash_entry
3827 struct elf_link_hash_entry elf
;
3830 /* A pointer to the most recently used stub hash entry against this
3832 struct ppc_stub_hash_entry
*stub_cache
;
3834 /* A pointer to the next symbol starting with a '.' */
3835 struct ppc_link_hash_entry
*next_dot_sym
;
3838 /* Track dynamic relocs copied for this symbol. */
3839 struct elf_dyn_relocs
*dyn_relocs
;
3841 /* Link between function code and descriptor symbols. */
3842 struct ppc_link_hash_entry
*oh
;
3844 /* Flag function code and descriptor symbols. */
3845 unsigned int is_func
:1;
3846 unsigned int is_func_descriptor
:1;
3847 unsigned int fake
:1;
3849 /* Whether global opd/toc sym has been adjusted or not.
3850 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3851 should be set for all globals defined in any opd/toc section. */
3852 unsigned int adjust_done
:1;
3854 /* Set if we twiddled this symbol to weak at some stage. */
3855 unsigned int was_undefined
:1;
3857 /* Contexts in which symbol is used in the GOT (or TOC).
3858 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3859 corresponding relocs are encountered during check_relocs.
3860 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3861 indicate the corresponding GOT entry type is not needed.
3862 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3863 a TPREL one. We use a separate flag rather than setting TPREL
3864 just for convenience in distinguishing the two cases. */
3865 #define TLS_GD 1 /* GD reloc. */
3866 #define TLS_LD 2 /* LD reloc. */
3867 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3868 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3869 #define TLS_TLS 16 /* Any TLS reloc. */
3870 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3871 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3872 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3873 unsigned char tls_mask
;
3876 /* ppc64 ELF linker hash table. */
3878 struct ppc_link_hash_table
3880 struct elf_link_hash_table elf
;
3882 /* The stub hash table. */
3883 struct bfd_hash_table stub_hash_table
;
3885 /* Another hash table for plt_branch stubs. */
3886 struct bfd_hash_table branch_hash_table
;
3888 /* Hash table for function prologue tocsave. */
3889 htab_t tocsave_htab
;
3891 /* Various options and other info passed from the linker. */
3892 struct ppc64_elf_params
*params
;
3894 /* Array to keep track of which stub sections have been created, and
3895 information on stub grouping. */
3897 /* This is the section to which stubs in the group will be attached. */
3899 /* The stub section. */
3901 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3905 /* Temp used when calculating TOC pointers. */
3908 asection
*toc_first_sec
;
3910 /* Highest input section id. */
3913 /* Highest output section index. */
3916 /* Used when adding symbols. */
3917 struct ppc_link_hash_entry
*dot_syms
;
3919 /* List of input sections for each output section. */
3920 asection
**input_list
;
3922 /* Shortcuts to get to dynamic linker sections. */
3929 asection
*glink_eh_frame
;
3931 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3932 struct ppc_link_hash_entry
*tls_get_addr
;
3933 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3935 /* The size of reliplt used by got entry relocs. */
3936 bfd_size_type got_reli_size
;
3939 unsigned long stub_count
[ppc_stub_plt_call_r2save
];
3941 /* Number of stubs against global syms. */
3942 unsigned long stub_globals
;
3944 /* Set if we're linking code with function descriptors. */
3945 unsigned int opd_abi
:1;
3947 /* Support for multiple toc sections. */
3948 unsigned int do_multi_toc
:1;
3949 unsigned int multi_toc_needed
:1;
3950 unsigned int second_toc_pass
:1;
3951 unsigned int do_toc_opt
:1;
3954 unsigned int stub_error
:1;
3956 /* Temp used by ppc64_elf_process_dot_syms. */
3957 unsigned int twiddled_syms
:1;
3959 /* Incremented every time we size stubs. */
3960 unsigned int stub_iteration
;
3962 /* Small local sym cache. */
3963 struct sym_cache sym_cache
;
3966 /* Rename some of the generic section flags to better document how they
3969 /* Nonzero if this section has TLS related relocations. */
3970 #define has_tls_reloc sec_flg0
3972 /* Nonzero if this section has a call to __tls_get_addr. */
3973 #define has_tls_get_addr_call sec_flg1
3975 /* Nonzero if this section has any toc or got relocs. */
3976 #define has_toc_reloc sec_flg2
3978 /* Nonzero if this section has a call to another section that uses
3980 #define makes_toc_func_call sec_flg3
3982 /* Recursion protection when determining above flag. */
3983 #define call_check_in_progress sec_flg4
3984 #define call_check_done sec_flg5
3986 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3988 #define ppc_hash_table(p) \
3989 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3990 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3992 #define ppc_stub_hash_lookup(table, string, create, copy) \
3993 ((struct ppc_stub_hash_entry *) \
3994 bfd_hash_lookup ((table), (string), (create), (copy)))
3996 #define ppc_branch_hash_lookup(table, string, create, copy) \
3997 ((struct ppc_branch_hash_entry *) \
3998 bfd_hash_lookup ((table), (string), (create), (copy)))
4000 /* Create an entry in the stub hash table. */
4002 static struct bfd_hash_entry
*
4003 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4004 struct bfd_hash_table
*table
,
4007 /* Allocate the structure if it has not already been allocated by a
4011 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4016 /* Call the allocation method of the superclass. */
4017 entry
= bfd_hash_newfunc (entry
, table
, string
);
4020 struct ppc_stub_hash_entry
*eh
;
4022 /* Initialize the local fields. */
4023 eh
= (struct ppc_stub_hash_entry
*) entry
;
4024 eh
->stub_type
= ppc_stub_none
;
4025 eh
->stub_sec
= NULL
;
4026 eh
->stub_offset
= 0;
4027 eh
->target_value
= 0;
4028 eh
->target_section
= NULL
;
4038 /* Create an entry in the branch hash table. */
4040 static struct bfd_hash_entry
*
4041 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4042 struct bfd_hash_table
*table
,
4045 /* Allocate the structure if it has not already been allocated by a
4049 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4054 /* Call the allocation method of the superclass. */
4055 entry
= bfd_hash_newfunc (entry
, table
, string
);
4058 struct ppc_branch_hash_entry
*eh
;
4060 /* Initialize the local fields. */
4061 eh
= (struct ppc_branch_hash_entry
*) entry
;
4069 /* Create an entry in a ppc64 ELF linker hash table. */
4071 static struct bfd_hash_entry
*
4072 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4073 struct bfd_hash_table
*table
,
4076 /* Allocate the structure if it has not already been allocated by a
4080 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4085 /* Call the allocation method of the superclass. */
4086 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4089 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4091 memset (&eh
->u
.stub_cache
, 0,
4092 (sizeof (struct ppc_link_hash_entry
)
4093 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4095 /* When making function calls, old ABI code references function entry
4096 points (dot symbols), while new ABI code references the function
4097 descriptor symbol. We need to make any combination of reference and
4098 definition work together, without breaking archive linking.
4100 For a defined function "foo" and an undefined call to "bar":
4101 An old object defines "foo" and ".foo", references ".bar" (possibly
4103 A new object defines "foo" and references "bar".
4105 A new object thus has no problem with its undefined symbols being
4106 satisfied by definitions in an old object. On the other hand, the
4107 old object won't have ".bar" satisfied by a new object.
4109 Keep a list of newly added dot-symbols. */
4111 if (string
[0] == '.')
4113 struct ppc_link_hash_table
*htab
;
4115 htab
= (struct ppc_link_hash_table
*) table
;
4116 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4117 htab
->dot_syms
= eh
;
4124 struct tocsave_entry
{
4130 tocsave_htab_hash (const void *p
)
4132 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4133 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4137 tocsave_htab_eq (const void *p1
, const void *p2
)
4139 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4140 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4141 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4144 /* Create a ppc64 ELF linker hash table. */
4146 static struct bfd_link_hash_table
*
4147 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4149 struct ppc_link_hash_table
*htab
;
4150 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4152 htab
= bfd_zmalloc (amt
);
4156 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4157 sizeof (struct ppc_link_hash_entry
),
4164 /* Init the stub hash table too. */
4165 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4166 sizeof (struct ppc_stub_hash_entry
)))
4168 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4172 /* And the branch hash table. */
4173 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4174 sizeof (struct ppc_branch_hash_entry
)))
4176 bfd_hash_table_free (&htab
->stub_hash_table
);
4177 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4181 htab
->tocsave_htab
= htab_try_create (1024,
4185 if (htab
->tocsave_htab
== NULL
)
4187 bfd_hash_table_free (&htab
->branch_hash_table
);
4188 bfd_hash_table_free (&htab
->stub_hash_table
);
4189 _bfd_elf_link_hash_table_free ((struct bfd_link_hash_table
*) htab
);
4193 /* Initializing two fields of the union is just cosmetic. We really
4194 only care about glist, but when compiled on a 32-bit host the
4195 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4196 debugger inspection of these fields look nicer. */
4197 htab
->elf
.init_got_refcount
.refcount
= 0;
4198 htab
->elf
.init_got_refcount
.glist
= NULL
;
4199 htab
->elf
.init_plt_refcount
.refcount
= 0;
4200 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4201 htab
->elf
.init_got_offset
.offset
= 0;
4202 htab
->elf
.init_got_offset
.glist
= NULL
;
4203 htab
->elf
.init_plt_offset
.offset
= 0;
4204 htab
->elf
.init_plt_offset
.glist
= NULL
;
4206 return &htab
->elf
.root
;
4209 /* Free the derived linker hash table. */
4212 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4214 struct ppc_link_hash_table
*htab
= (struct ppc_link_hash_table
*) hash
;
4216 bfd_hash_table_free (&htab
->stub_hash_table
);
4217 bfd_hash_table_free (&htab
->branch_hash_table
);
4218 if (htab
->tocsave_htab
)
4219 htab_delete (htab
->tocsave_htab
);
4220 _bfd_elf_link_hash_table_free (hash
);
4223 /* Create sections for linker generated code. */
4226 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4228 struct ppc_link_hash_table
*htab
;
4231 htab
= ppc_hash_table (info
);
4233 /* Create .sfpr for code to save and restore fp regs. */
4234 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4235 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4236 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4238 if (htab
->sfpr
== NULL
4239 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4242 /* Create .glink for lazy dynamic linking support. */
4243 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4245 if (htab
->glink
== NULL
4246 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4249 if (!info
->no_ld_generated_unwind_info
)
4251 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4252 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4253 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4256 if (htab
->glink_eh_frame
== NULL
4257 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4261 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4262 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4263 if (htab
->elf
.iplt
== NULL
4264 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4267 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4268 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4270 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4271 if (htab
->elf
.irelplt
== NULL
4272 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4275 /* Create branch lookup table for plt_branch stubs. */
4276 flags
= (SEC_ALLOC
| SEC_LOAD
4277 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4278 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4280 if (htab
->brlt
== NULL
4281 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4287 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4288 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4289 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4292 if (htab
->relbrlt
== NULL
4293 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4299 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4302 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4303 struct ppc64_elf_params
*params
)
4305 struct ppc_link_hash_table
*htab
;
4307 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4309 /* Always hook our dynamic sections into the first bfd, which is the
4310 linker created stub bfd. This ensures that the GOT header is at
4311 the start of the output TOC section. */
4312 htab
= ppc_hash_table (info
);
4315 htab
->elf
.dynobj
= params
->stub_bfd
;
4316 htab
->params
= params
;
4318 if (info
->relocatable
)
4321 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4324 /* Build a name for an entry in the stub hash table. */
4327 ppc_stub_name (const asection
*input_section
,
4328 const asection
*sym_sec
,
4329 const struct ppc_link_hash_entry
*h
,
4330 const Elf_Internal_Rela
*rel
)
4335 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4336 offsets from a sym as a branch target? In fact, we could
4337 probably assume the addend is always zero. */
4338 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4342 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4343 stub_name
= bfd_malloc (len
);
4344 if (stub_name
== NULL
)
4347 len
= sprintf (stub_name
, "%08x.%s+%x",
4348 input_section
->id
& 0xffffffff,
4349 h
->elf
.root
.root
.string
,
4350 (int) rel
->r_addend
& 0xffffffff);
4354 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4355 stub_name
= bfd_malloc (len
);
4356 if (stub_name
== NULL
)
4359 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4360 input_section
->id
& 0xffffffff,
4361 sym_sec
->id
& 0xffffffff,
4362 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4363 (int) rel
->r_addend
& 0xffffffff);
4365 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4366 stub_name
[len
- 2] = 0;
4370 /* Look up an entry in the stub hash. Stub entries are cached because
4371 creating the stub name takes a bit of time. */
4373 static struct ppc_stub_hash_entry
*
4374 ppc_get_stub_entry (const asection
*input_section
,
4375 const asection
*sym_sec
,
4376 struct ppc_link_hash_entry
*h
,
4377 const Elf_Internal_Rela
*rel
,
4378 struct ppc_link_hash_table
*htab
)
4380 struct ppc_stub_hash_entry
*stub_entry
;
4381 const asection
*id_sec
;
4383 /* If this input section is part of a group of sections sharing one
4384 stub section, then use the id of the first section in the group.
4385 Stub names need to include a section id, as there may well be
4386 more than one stub used to reach say, printf, and we need to
4387 distinguish between them. */
4388 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4390 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4391 && h
->u
.stub_cache
->h
== h
4392 && h
->u
.stub_cache
->id_sec
== id_sec
)
4394 stub_entry
= h
->u
.stub_cache
;
4400 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4401 if (stub_name
== NULL
)
4404 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4405 stub_name
, FALSE
, FALSE
);
4407 h
->u
.stub_cache
= stub_entry
;
4415 /* Add a new stub entry to the stub hash. Not all fields of the new
4416 stub entry are initialised. */
4418 static struct ppc_stub_hash_entry
*
4419 ppc_add_stub (const char *stub_name
,
4421 struct bfd_link_info
*info
)
4423 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4426 struct ppc_stub_hash_entry
*stub_entry
;
4428 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4429 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4430 if (stub_sec
== NULL
)
4432 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4433 if (stub_sec
== NULL
)
4439 namelen
= strlen (link_sec
->name
);
4440 len
= namelen
+ sizeof (STUB_SUFFIX
);
4441 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4445 memcpy (s_name
, link_sec
->name
, namelen
);
4446 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4447 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4448 if (stub_sec
== NULL
)
4450 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4452 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4455 /* Enter this entry into the linker stub hash table. */
4456 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4458 if (stub_entry
== NULL
)
4460 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4461 section
->owner
, stub_name
);
4465 stub_entry
->stub_sec
= stub_sec
;
4466 stub_entry
->stub_offset
= 0;
4467 stub_entry
->id_sec
= link_sec
;
4471 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4472 not already done. */
4475 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4477 asection
*got
, *relgot
;
4479 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4481 if (!is_ppc64_elf (abfd
))
4487 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4490 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4491 | SEC_LINKER_CREATED
);
4493 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4495 || !bfd_set_section_alignment (abfd
, got
, 3))
4498 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4499 flags
| SEC_READONLY
);
4501 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4504 ppc64_elf_tdata (abfd
)->got
= got
;
4505 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4509 /* Create the dynamic sections, and set up shortcuts. */
4512 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4514 struct ppc_link_hash_table
*htab
;
4516 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4519 htab
= ppc_hash_table (info
);
4523 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4525 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4527 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4528 || (!info
->shared
&& !htab
->relbss
))
4534 /* Follow indirect and warning symbol links. */
4536 static inline struct bfd_link_hash_entry
*
4537 follow_link (struct bfd_link_hash_entry
*h
)
4539 while (h
->type
== bfd_link_hash_indirect
4540 || h
->type
== bfd_link_hash_warning
)
4545 static inline struct elf_link_hash_entry
*
4546 elf_follow_link (struct elf_link_hash_entry
*h
)
4548 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4551 static inline struct ppc_link_hash_entry
*
4552 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4554 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4557 /* Merge PLT info on FROM with that on TO. */
4560 move_plt_plist (struct ppc_link_hash_entry
*from
,
4561 struct ppc_link_hash_entry
*to
)
4563 if (from
->elf
.plt
.plist
!= NULL
)
4565 if (to
->elf
.plt
.plist
!= NULL
)
4567 struct plt_entry
**entp
;
4568 struct plt_entry
*ent
;
4570 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4572 struct plt_entry
*dent
;
4574 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4575 if (dent
->addend
== ent
->addend
)
4577 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4584 *entp
= to
->elf
.plt
.plist
;
4587 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4588 from
->elf
.plt
.plist
= NULL
;
4592 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4595 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4596 struct elf_link_hash_entry
*dir
,
4597 struct elf_link_hash_entry
*ind
)
4599 struct ppc_link_hash_entry
*edir
, *eind
;
4601 edir
= (struct ppc_link_hash_entry
*) dir
;
4602 eind
= (struct ppc_link_hash_entry
*) ind
;
4604 edir
->is_func
|= eind
->is_func
;
4605 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4606 edir
->tls_mask
|= eind
->tls_mask
;
4607 if (eind
->oh
!= NULL
)
4608 edir
->oh
= ppc_follow_link (eind
->oh
);
4610 /* If called to transfer flags for a weakdef during processing
4611 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4612 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4613 if (!(ELIMINATE_COPY_RELOCS
4614 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4615 && edir
->elf
.dynamic_adjusted
))
4616 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4618 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4619 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4620 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4621 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4622 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4624 /* Copy over any dynamic relocs we may have on the indirect sym. */
4625 if (eind
->dyn_relocs
!= NULL
)
4627 if (edir
->dyn_relocs
!= NULL
)
4629 struct elf_dyn_relocs
**pp
;
4630 struct elf_dyn_relocs
*p
;
4632 /* Add reloc counts against the indirect sym to the direct sym
4633 list. Merge any entries against the same section. */
4634 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4636 struct elf_dyn_relocs
*q
;
4638 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4639 if (q
->sec
== p
->sec
)
4641 q
->pc_count
+= p
->pc_count
;
4642 q
->count
+= p
->count
;
4649 *pp
= edir
->dyn_relocs
;
4652 edir
->dyn_relocs
= eind
->dyn_relocs
;
4653 eind
->dyn_relocs
= NULL
;
4656 /* If we were called to copy over info for a weak sym, that's all.
4657 You might think dyn_relocs need not be copied over; After all,
4658 both syms will be dynamic or both non-dynamic so we're just
4659 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4660 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4661 dyn_relocs in read-only sections, and it does so on what is the
4663 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4666 /* Copy over got entries that we may have already seen to the
4667 symbol which just became indirect. */
4668 if (eind
->elf
.got
.glist
!= NULL
)
4670 if (edir
->elf
.got
.glist
!= NULL
)
4672 struct got_entry
**entp
;
4673 struct got_entry
*ent
;
4675 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4677 struct got_entry
*dent
;
4679 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4680 if (dent
->addend
== ent
->addend
4681 && dent
->owner
== ent
->owner
4682 && dent
->tls_type
== ent
->tls_type
)
4684 dent
->got
.refcount
+= ent
->got
.refcount
;
4691 *entp
= edir
->elf
.got
.glist
;
4694 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4695 eind
->elf
.got
.glist
= NULL
;
4698 /* And plt entries. */
4699 move_plt_plist (eind
, edir
);
4701 if (eind
->elf
.dynindx
!= -1)
4703 if (edir
->elf
.dynindx
!= -1)
4704 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4705 edir
->elf
.dynstr_index
);
4706 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4707 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4708 eind
->elf
.dynindx
= -1;
4709 eind
->elf
.dynstr_index
= 0;
4713 /* Find the function descriptor hash entry from the given function code
4714 hash entry FH. Link the entries via their OH fields. */
4716 static struct ppc_link_hash_entry
*
4717 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4719 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4723 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4725 fdh
= (struct ppc_link_hash_entry
*)
4726 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4730 fdh
->is_func_descriptor
= 1;
4736 return ppc_follow_link (fdh
);
4739 /* Make a fake function descriptor sym for the code sym FH. */
4741 static struct ppc_link_hash_entry
*
4742 make_fdh (struct bfd_link_info
*info
,
4743 struct ppc_link_hash_entry
*fh
)
4747 struct bfd_link_hash_entry
*bh
;
4748 struct ppc_link_hash_entry
*fdh
;
4750 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4751 newsym
= bfd_make_empty_symbol (abfd
);
4752 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4753 newsym
->section
= bfd_und_section_ptr
;
4755 newsym
->flags
= BSF_WEAK
;
4758 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4759 newsym
->flags
, newsym
->section
,
4760 newsym
->value
, NULL
, FALSE
, FALSE
,
4764 fdh
= (struct ppc_link_hash_entry
*) bh
;
4765 fdh
->elf
.non_elf
= 0;
4767 fdh
->is_func_descriptor
= 1;
4774 /* Fix function descriptor symbols defined in .opd sections to be
4778 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4779 struct bfd_link_info
*info
,
4780 Elf_Internal_Sym
*isym
,
4782 flagword
*flags ATTRIBUTE_UNUSED
,
4784 bfd_vma
*value ATTRIBUTE_UNUSED
)
4786 if ((ibfd
->flags
& DYNAMIC
) == 0
4787 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4788 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4790 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4792 if ((ibfd
->flags
& DYNAMIC
) == 0)
4793 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4795 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4797 else if (*sec
!= NULL
4798 && strcmp ((*sec
)->name
, ".opd") == 0)
4799 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4801 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4803 if (abiversion (ibfd
) == 0)
4804 set_abiversion (ibfd
, 2);
4805 else if (abiversion (ibfd
) == 1)
4807 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4808 " for ABI version 1\n"), name
);
4809 bfd_set_error (bfd_error_bad_value
);
4817 /* Merge non-visibility st_other attributes: local entry point. */
4820 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4821 const Elf_Internal_Sym
*isym
,
4822 bfd_boolean definition
,
4823 bfd_boolean dynamic
)
4825 if (definition
&& !dynamic
)
4826 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4827 | ELF_ST_VISIBILITY (h
->other
));
4830 /* This function makes an old ABI object reference to ".bar" cause the
4831 inclusion of a new ABI object archive that defines "bar".
4832 NAME is a symbol defined in an archive. Return a symbol in the hash
4833 table that might be satisfied by the archive symbols. */
4835 static struct elf_link_hash_entry
*
4836 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4837 struct bfd_link_info
*info
,
4840 struct elf_link_hash_entry
*h
;
4844 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4846 /* Don't return this sym if it is a fake function descriptor
4847 created by add_symbol_adjust. */
4848 && !(h
->root
.type
== bfd_link_hash_undefweak
4849 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4855 len
= strlen (name
);
4856 dot_name
= bfd_alloc (abfd
, len
+ 2);
4857 if (dot_name
== NULL
)
4858 return (struct elf_link_hash_entry
*) 0 - 1;
4860 memcpy (dot_name
+ 1, name
, len
+ 1);
4861 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4862 bfd_release (abfd
, dot_name
);
4866 /* This function satisfies all old ABI object references to ".bar" if a
4867 new ABI object defines "bar". Well, at least, undefined dot symbols
4868 are made weak. This stops later archive searches from including an
4869 object if we already have a function descriptor definition. It also
4870 prevents the linker complaining about undefined symbols.
4871 We also check and correct mismatched symbol visibility here. The
4872 most restrictive visibility of the function descriptor and the
4873 function entry symbol is used. */
4876 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4878 struct ppc_link_hash_table
*htab
;
4879 struct ppc_link_hash_entry
*fdh
;
4881 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4884 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4885 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4887 if (eh
->elf
.root
.root
.string
[0] != '.')
4890 htab
= ppc_hash_table (info
);
4894 fdh
= lookup_fdh (eh
, htab
);
4897 if (!info
->relocatable
4898 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4899 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4900 && eh
->elf
.ref_regular
)
4902 /* Make an undefweak function descriptor sym, which is enough to
4903 pull in an --as-needed shared lib, but won't cause link
4904 errors. Archives are handled elsewhere. */
4905 fdh
= make_fdh (info
, eh
);
4908 fdh
->elf
.ref_regular
= 1;
4913 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4914 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4915 if (entry_vis
< descr_vis
)
4916 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4917 else if (entry_vis
> descr_vis
)
4918 eh
->elf
.other
+= descr_vis
- entry_vis
;
4920 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4921 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4922 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4924 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4925 eh
->was_undefined
= 1;
4926 htab
->twiddled_syms
= 1;
4933 /* Process list of dot-symbols we made in link_hash_newfunc. */
4936 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4938 struct ppc_link_hash_table
*htab
;
4939 struct ppc_link_hash_entry
**p
, *eh
;
4941 if (!is_ppc64_elf (info
->output_bfd
))
4943 htab
= ppc_hash_table (info
);
4947 if (is_ppc64_elf (ibfd
))
4949 p
= &htab
->dot_syms
;
4950 while ((eh
= *p
) != NULL
)
4953 if (&eh
->elf
== htab
->elf
.hgot
)
4955 else if (htab
->elf
.hgot
== NULL
4956 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
4957 htab
->elf
.hgot
= &eh
->elf
;
4958 else if (!add_symbol_adjust (eh
, info
))
4960 p
= &eh
->u
.next_dot_sym
;
4964 /* Clear the list for non-ppc64 input files. */
4965 p
= &htab
->dot_syms
;
4966 while ((eh
= *p
) != NULL
)
4969 p
= &eh
->u
.next_dot_sym
;
4972 /* We need to fix the undefs list for any syms we have twiddled to
4974 if (htab
->twiddled_syms
)
4976 bfd_link_repair_undef_list (&htab
->elf
.root
);
4977 htab
->twiddled_syms
= 0;
4982 /* Undo hash table changes when an --as-needed input file is determined
4983 not to be needed. */
4986 ppc64_elf_notice_as_needed (bfd
*ibfd
,
4987 struct bfd_link_info
*info
,
4988 enum notice_asneeded_action act
)
4990 if (act
== notice_not_needed
)
4992 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4997 htab
->dot_syms
= NULL
;
4999 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5002 /* If --just-symbols against a final linked binary, then assume we need
5003 toc adjusting stubs when calling functions defined there. */
5006 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5008 if ((sec
->flags
& SEC_CODE
) != 0
5009 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5010 && is_ppc64_elf (sec
->owner
))
5012 if (abiversion (sec
->owner
) >= 2
5013 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5014 sec
->has_toc_reloc
= 1;
5016 _bfd_elf_link_just_syms (sec
, info
);
5019 static struct plt_entry
**
5020 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5021 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5023 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5024 struct plt_entry
**local_plt
;
5025 unsigned char *local_got_tls_masks
;
5027 if (local_got_ents
== NULL
)
5029 bfd_size_type size
= symtab_hdr
->sh_info
;
5031 size
*= (sizeof (*local_got_ents
)
5032 + sizeof (*local_plt
)
5033 + sizeof (*local_got_tls_masks
));
5034 local_got_ents
= bfd_zalloc (abfd
, size
);
5035 if (local_got_ents
== NULL
)
5037 elf_local_got_ents (abfd
) = local_got_ents
;
5040 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5042 struct got_entry
*ent
;
5044 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5045 if (ent
->addend
== r_addend
5046 && ent
->owner
== abfd
5047 && ent
->tls_type
== tls_type
)
5051 bfd_size_type amt
= sizeof (*ent
);
5052 ent
= bfd_alloc (abfd
, amt
);
5055 ent
->next
= local_got_ents
[r_symndx
];
5056 ent
->addend
= r_addend
;
5058 ent
->tls_type
= tls_type
;
5059 ent
->is_indirect
= FALSE
;
5060 ent
->got
.refcount
= 0;
5061 local_got_ents
[r_symndx
] = ent
;
5063 ent
->got
.refcount
+= 1;
5066 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5067 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5068 local_got_tls_masks
[r_symndx
] |= tls_type
;
5070 return local_plt
+ r_symndx
;
5074 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5076 struct plt_entry
*ent
;
5078 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5079 if (ent
->addend
== addend
)
5083 bfd_size_type amt
= sizeof (*ent
);
5084 ent
= bfd_alloc (abfd
, amt
);
5088 ent
->addend
= addend
;
5089 ent
->plt
.refcount
= 0;
5092 ent
->plt
.refcount
+= 1;
5097 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5099 return (r_type
== R_PPC64_REL24
5100 || r_type
== R_PPC64_REL14
5101 || r_type
== R_PPC64_REL14_BRTAKEN
5102 || r_type
== R_PPC64_REL14_BRNTAKEN
5103 || r_type
== R_PPC64_ADDR24
5104 || r_type
== R_PPC64_ADDR14
5105 || r_type
== R_PPC64_ADDR14_BRTAKEN
5106 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5109 /* Look through the relocs for a section during the first phase, and
5110 calculate needed space in the global offset table, procedure
5111 linkage table, and dynamic reloc sections. */
5114 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5115 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5117 struct ppc_link_hash_table
*htab
;
5118 Elf_Internal_Shdr
*symtab_hdr
;
5119 struct elf_link_hash_entry
**sym_hashes
;
5120 const Elf_Internal_Rela
*rel
;
5121 const Elf_Internal_Rela
*rel_end
;
5123 asection
**opd_sym_map
;
5124 struct elf_link_hash_entry
*tga
, *dottga
;
5126 if (info
->relocatable
)
5129 /* Don't do anything special with non-loaded, non-alloced sections.
5130 In particular, any relocs in such sections should not affect GOT
5131 and PLT reference counting (ie. we don't allow them to create GOT
5132 or PLT entries), there's no possibility or desire to optimize TLS
5133 relocs, and there's not much point in propagating relocs to shared
5134 libs that the dynamic linker won't relocate. */
5135 if ((sec
->flags
& SEC_ALLOC
) == 0)
5138 BFD_ASSERT (is_ppc64_elf (abfd
));
5140 htab
= ppc_hash_table (info
);
5144 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5145 FALSE
, FALSE
, TRUE
);
5146 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5147 FALSE
, FALSE
, TRUE
);
5148 symtab_hdr
= &elf_symtab_hdr (abfd
);
5149 sym_hashes
= elf_sym_hashes (abfd
);
5152 if (strcmp (sec
->name
, ".opd") == 0)
5154 /* Garbage collection needs some extra help with .opd sections.
5155 We don't want to necessarily keep everything referenced by
5156 relocs in .opd, as that would keep all functions. Instead,
5157 if we reference an .opd symbol (a function descriptor), we
5158 want to keep the function code symbol's section. This is
5159 easy for global symbols, but for local syms we need to keep
5160 information about the associated function section. */
5163 if (abiversion (abfd
) == 0)
5164 set_abiversion (abfd
, 1);
5165 else if (abiversion (abfd
) == 2)
5167 info
->callbacks
->einfo (_("%P: .opd not allowed in ABI version %d\n"),
5169 bfd_set_error (bfd_error_bad_value
);
5172 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
5173 opd_sym_map
= bfd_zalloc (abfd
, amt
);
5174 if (opd_sym_map
== NULL
)
5176 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
5177 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
5178 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
5181 rel_end
= relocs
+ sec
->reloc_count
;
5182 for (rel
= relocs
; rel
< rel_end
; rel
++)
5184 unsigned long r_symndx
;
5185 struct elf_link_hash_entry
*h
;
5186 enum elf_ppc64_reloc_type r_type
;
5188 struct _ppc64_elf_section_data
*ppc64_sec
;
5189 struct plt_entry
**ifunc
;
5191 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5192 if (r_symndx
< symtab_hdr
->sh_info
)
5196 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5197 h
= elf_follow_link (h
);
5199 /* PR15323, ref flags aren't set for references in the same
5201 h
->root
.non_ir_ref
= 1;
5203 if (h
== htab
->elf
.hgot
)
5204 sec
->has_toc_reloc
= 1;
5211 if (h
->type
== STT_GNU_IFUNC
)
5214 ifunc
= &h
->plt
.plist
;
5219 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5224 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5226 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5227 rel
->r_addend
, PLT_IFUNC
);
5232 r_type
= ELF64_R_TYPE (rel
->r_info
);
5233 if (is_branch_reloc (r_type
))
5235 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5238 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5239 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5240 /* We have a new-style __tls_get_addr call with a marker
5244 /* Mark this section as having an old-style call. */
5245 sec
->has_tls_get_addr_call
= 1;
5248 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5250 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5258 /* These special tls relocs tie a call to __tls_get_addr with
5259 its parameter symbol. */
5262 case R_PPC64_GOT_TLSLD16
:
5263 case R_PPC64_GOT_TLSLD16_LO
:
5264 case R_PPC64_GOT_TLSLD16_HI
:
5265 case R_PPC64_GOT_TLSLD16_HA
:
5266 tls_type
= TLS_TLS
| TLS_LD
;
5269 case R_PPC64_GOT_TLSGD16
:
5270 case R_PPC64_GOT_TLSGD16_LO
:
5271 case R_PPC64_GOT_TLSGD16_HI
:
5272 case R_PPC64_GOT_TLSGD16_HA
:
5273 tls_type
= TLS_TLS
| TLS_GD
;
5276 case R_PPC64_GOT_TPREL16_DS
:
5277 case R_PPC64_GOT_TPREL16_LO_DS
:
5278 case R_PPC64_GOT_TPREL16_HI
:
5279 case R_PPC64_GOT_TPREL16_HA
:
5280 if (!info
->executable
)
5281 info
->flags
|= DF_STATIC_TLS
;
5282 tls_type
= TLS_TLS
| TLS_TPREL
;
5285 case R_PPC64_GOT_DTPREL16_DS
:
5286 case R_PPC64_GOT_DTPREL16_LO_DS
:
5287 case R_PPC64_GOT_DTPREL16_HI
:
5288 case R_PPC64_GOT_DTPREL16_HA
:
5289 tls_type
= TLS_TLS
| TLS_DTPREL
;
5291 sec
->has_tls_reloc
= 1;
5295 case R_PPC64_GOT16_DS
:
5296 case R_PPC64_GOT16_HA
:
5297 case R_PPC64_GOT16_HI
:
5298 case R_PPC64_GOT16_LO
:
5299 case R_PPC64_GOT16_LO_DS
:
5300 /* This symbol requires a global offset table entry. */
5301 sec
->has_toc_reloc
= 1;
5302 if (r_type
== R_PPC64_GOT_TLSLD16
5303 || r_type
== R_PPC64_GOT_TLSGD16
5304 || r_type
== R_PPC64_GOT_TPREL16_DS
5305 || r_type
== R_PPC64_GOT_DTPREL16_DS
5306 || r_type
== R_PPC64_GOT16
5307 || r_type
== R_PPC64_GOT16_DS
)
5309 htab
->do_multi_toc
= 1;
5310 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5313 if (ppc64_elf_tdata (abfd
)->got
== NULL
5314 && !create_got_section (abfd
, info
))
5319 struct ppc_link_hash_entry
*eh
;
5320 struct got_entry
*ent
;
5322 eh
= (struct ppc_link_hash_entry
*) h
;
5323 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5324 if (ent
->addend
== rel
->r_addend
5325 && ent
->owner
== abfd
5326 && ent
->tls_type
== tls_type
)
5330 bfd_size_type amt
= sizeof (*ent
);
5331 ent
= bfd_alloc (abfd
, amt
);
5334 ent
->next
= eh
->elf
.got
.glist
;
5335 ent
->addend
= rel
->r_addend
;
5337 ent
->tls_type
= tls_type
;
5338 ent
->is_indirect
= FALSE
;
5339 ent
->got
.refcount
= 0;
5340 eh
->elf
.got
.glist
= ent
;
5342 ent
->got
.refcount
+= 1;
5343 eh
->tls_mask
|= tls_type
;
5346 /* This is a global offset table entry for a local symbol. */
5347 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5348 rel
->r_addend
, tls_type
))
5351 /* We may also need a plt entry if the symbol turns out to be
5353 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) == 2)
5355 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5360 case R_PPC64_PLT16_HA
:
5361 case R_PPC64_PLT16_HI
:
5362 case R_PPC64_PLT16_LO
:
5365 /* This symbol requires a procedure linkage table entry. We
5366 actually build the entry in adjust_dynamic_symbol,
5367 because this might be a case of linking PIC code without
5368 linking in any dynamic objects, in which case we don't
5369 need to generate a procedure linkage table after all. */
5372 /* It does not make sense to have a procedure linkage
5373 table entry for a local symbol. */
5374 bfd_set_error (bfd_error_bad_value
);
5379 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5382 if (h
->root
.root
.string
[0] == '.'
5383 && h
->root
.root
.string
[1] != '\0')
5384 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5388 /* The following relocations don't need to propagate the
5389 relocation if linking a shared object since they are
5390 section relative. */
5391 case R_PPC64_SECTOFF
:
5392 case R_PPC64_SECTOFF_LO
:
5393 case R_PPC64_SECTOFF_HI
:
5394 case R_PPC64_SECTOFF_HA
:
5395 case R_PPC64_SECTOFF_DS
:
5396 case R_PPC64_SECTOFF_LO_DS
:
5397 case R_PPC64_DTPREL16
:
5398 case R_PPC64_DTPREL16_LO
:
5399 case R_PPC64_DTPREL16_HI
:
5400 case R_PPC64_DTPREL16_HA
:
5401 case R_PPC64_DTPREL16_DS
:
5402 case R_PPC64_DTPREL16_LO_DS
:
5403 case R_PPC64_DTPREL16_HIGH
:
5404 case R_PPC64_DTPREL16_HIGHA
:
5405 case R_PPC64_DTPREL16_HIGHER
:
5406 case R_PPC64_DTPREL16_HIGHERA
:
5407 case R_PPC64_DTPREL16_HIGHEST
:
5408 case R_PPC64_DTPREL16_HIGHESTA
:
5413 case R_PPC64_REL16_LO
:
5414 case R_PPC64_REL16_HI
:
5415 case R_PPC64_REL16_HA
:
5418 /* Not supported as a dynamic relocation. */
5419 case R_PPC64_ADDR64_LOCAL
:
5422 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5424 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5425 "in shared libraries and PIEs.\n"),
5426 abfd
, sec
, rel
->r_offset
,
5427 ppc64_elf_howto_table
[r_type
]->name
);
5428 bfd_set_error (bfd_error_bad_value
);
5434 case R_PPC64_TOC16_DS
:
5435 htab
->do_multi_toc
= 1;
5436 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5437 case R_PPC64_TOC16_LO
:
5438 case R_PPC64_TOC16_HI
:
5439 case R_PPC64_TOC16_HA
:
5440 case R_PPC64_TOC16_LO_DS
:
5441 sec
->has_toc_reloc
= 1;
5444 /* This relocation describes the C++ object vtable hierarchy.
5445 Reconstruct it for later use during GC. */
5446 case R_PPC64_GNU_VTINHERIT
:
5447 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5451 /* This relocation describes which C++ vtable entries are actually
5452 used. Record for later use during GC. */
5453 case R_PPC64_GNU_VTENTRY
:
5454 BFD_ASSERT (h
!= NULL
);
5456 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5461 case R_PPC64_REL14_BRTAKEN
:
5462 case R_PPC64_REL14_BRNTAKEN
:
5464 asection
*dest
= NULL
;
5466 /* Heuristic: If jumping outside our section, chances are
5467 we are going to need a stub. */
5470 /* If the sym is weak it may be overridden later, so
5471 don't assume we know where a weak sym lives. */
5472 if (h
->root
.type
== bfd_link_hash_defined
)
5473 dest
= h
->root
.u
.def
.section
;
5477 Elf_Internal_Sym
*isym
;
5479 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5484 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5488 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5493 if (h
!= NULL
&& ifunc
== NULL
)
5495 /* We may need a .plt entry if the function this reloc
5496 refers to is in a shared lib. */
5497 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5500 if (h
->root
.root
.string
[0] == '.'
5501 && h
->root
.root
.string
[1] != '\0')
5502 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5503 if (h
== tga
|| h
== dottga
)
5504 sec
->has_tls_reloc
= 1;
5508 case R_PPC64_TPREL64
:
5509 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5510 if (!info
->executable
)
5511 info
->flags
|= DF_STATIC_TLS
;
5514 case R_PPC64_DTPMOD64
:
5515 if (rel
+ 1 < rel_end
5516 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5517 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5518 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5520 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5523 case R_PPC64_DTPREL64
:
5524 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5526 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5527 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5528 /* This is the second reloc of a dtpmod, dtprel pair.
5529 Don't mark with TLS_DTPREL. */
5533 sec
->has_tls_reloc
= 1;
5536 struct ppc_link_hash_entry
*eh
;
5537 eh
= (struct ppc_link_hash_entry
*) h
;
5538 eh
->tls_mask
|= tls_type
;
5541 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5542 rel
->r_addend
, tls_type
))
5545 ppc64_sec
= ppc64_elf_section_data (sec
);
5546 if (ppc64_sec
->sec_type
!= sec_toc
)
5550 /* One extra to simplify get_tls_mask. */
5551 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5552 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5553 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5555 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5556 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5557 if (ppc64_sec
->u
.toc
.add
== NULL
)
5559 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5560 ppc64_sec
->sec_type
= sec_toc
;
5562 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5563 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5564 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5566 /* Mark the second slot of a GD or LD entry.
5567 -1 to indicate GD and -2 to indicate LD. */
5568 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5569 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5570 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5571 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5574 case R_PPC64_TPREL16
:
5575 case R_PPC64_TPREL16_LO
:
5576 case R_PPC64_TPREL16_HI
:
5577 case R_PPC64_TPREL16_HA
:
5578 case R_PPC64_TPREL16_DS
:
5579 case R_PPC64_TPREL16_LO_DS
:
5580 case R_PPC64_TPREL16_HIGH
:
5581 case R_PPC64_TPREL16_HIGHA
:
5582 case R_PPC64_TPREL16_HIGHER
:
5583 case R_PPC64_TPREL16_HIGHERA
:
5584 case R_PPC64_TPREL16_HIGHEST
:
5585 case R_PPC64_TPREL16_HIGHESTA
:
5588 if (!info
->executable
)
5589 info
->flags
|= DF_STATIC_TLS
;
5594 case R_PPC64_ADDR64
:
5595 if (opd_sym_map
!= NULL
5596 && rel
+ 1 < rel_end
5597 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5601 if (h
->root
.root
.string
[0] == '.'
5602 && h
->root
.root
.string
[1] != 0
5603 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5606 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5611 Elf_Internal_Sym
*isym
;
5613 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5618 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5619 if (s
!= NULL
&& s
!= sec
)
5620 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5625 case R_PPC64_ADDR16
:
5626 case R_PPC64_ADDR16_DS
:
5627 case R_PPC64_ADDR16_HA
:
5628 case R_PPC64_ADDR16_HI
:
5629 case R_PPC64_ADDR16_HIGH
:
5630 case R_PPC64_ADDR16_HIGHA
:
5631 case R_PPC64_ADDR16_HIGHER
:
5632 case R_PPC64_ADDR16_HIGHERA
:
5633 case R_PPC64_ADDR16_HIGHEST
:
5634 case R_PPC64_ADDR16_HIGHESTA
:
5635 case R_PPC64_ADDR16_LO
:
5636 case R_PPC64_ADDR16_LO_DS
:
5637 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) == 2
5638 && rel
->r_addend
== 0)
5640 /* We may need a .plt entry if this reloc refers to a
5641 function in a shared lib. */
5642 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5644 h
->pointer_equality_needed
= 1;
5651 case R_PPC64_ADDR14
:
5652 case R_PPC64_ADDR14_BRNTAKEN
:
5653 case R_PPC64_ADDR14_BRTAKEN
:
5654 case R_PPC64_ADDR24
:
5655 case R_PPC64_ADDR32
:
5656 case R_PPC64_UADDR16
:
5657 case R_PPC64_UADDR32
:
5658 case R_PPC64_UADDR64
:
5660 if (h
!= NULL
&& !info
->shared
)
5661 /* We may need a copy reloc. */
5664 /* Don't propagate .opd relocs. */
5665 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5668 /* If we are creating a shared library, and this is a reloc
5669 against a global symbol, or a non PC relative reloc
5670 against a local symbol, then we need to copy the reloc
5671 into the shared library. However, if we are linking with
5672 -Bsymbolic, we do not need to copy a reloc against a
5673 global symbol which is defined in an object we are
5674 including in the link (i.e., DEF_REGULAR is set). At
5675 this point we have not seen all the input files, so it is
5676 possible that DEF_REGULAR is not set now but will be set
5677 later (it is never cleared). In case of a weak definition,
5678 DEF_REGULAR may be cleared later by a strong definition in
5679 a shared library. We account for that possibility below by
5680 storing information in the dyn_relocs field of the hash
5681 table entry. A similar situation occurs when creating
5682 shared libraries and symbol visibility changes render the
5685 If on the other hand, we are creating an executable, we
5686 may need to keep relocations for symbols satisfied by a
5687 dynamic library if we manage to avoid copy relocs for the
5691 && (must_be_dyn_reloc (info
, r_type
)
5693 && (!SYMBOLIC_BIND (info
, h
)
5694 || h
->root
.type
== bfd_link_hash_defweak
5695 || !h
->def_regular
))))
5696 || (ELIMINATE_COPY_RELOCS
5699 && (h
->root
.type
== bfd_link_hash_defweak
5700 || !h
->def_regular
))
5704 /* We must copy these reloc types into the output file.
5705 Create a reloc section in dynobj and make room for
5709 sreloc
= _bfd_elf_make_dynamic_reloc_section
5710 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5716 /* If this is a global symbol, we count the number of
5717 relocations we need for this symbol. */
5720 struct elf_dyn_relocs
*p
;
5721 struct elf_dyn_relocs
**head
;
5723 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5725 if (p
== NULL
|| p
->sec
!= sec
)
5727 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5737 if (!must_be_dyn_reloc (info
, r_type
))
5742 /* Track dynamic relocs needed for local syms too.
5743 We really need local syms available to do this
5745 struct ppc_dyn_relocs
*p
;
5746 struct ppc_dyn_relocs
**head
;
5747 bfd_boolean is_ifunc
;
5750 Elf_Internal_Sym
*isym
;
5752 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5757 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5761 vpp
= &elf_section_data (s
)->local_dynrel
;
5762 head
= (struct ppc_dyn_relocs
**) vpp
;
5763 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5765 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5767 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5769 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5775 p
->ifunc
= is_ifunc
;
5791 /* Merge backend specific data from an object file to the output
5792 object file when linking. */
5795 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5797 unsigned long iflags
, oflags
;
5799 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5802 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5805 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5808 iflags
= elf_elfheader (ibfd
)->e_flags
;
5809 oflags
= elf_elfheader (obfd
)->e_flags
;
5811 if (!elf_flags_init (obfd
) || oflags
== 0)
5813 elf_flags_init (obfd
) = TRUE
;
5814 elf_elfheader (obfd
)->e_flags
= iflags
;
5816 else if (iflags
== oflags
|| iflags
== 0)
5818 else if (iflags
& ~EF_PPC64_ABI
)
5820 (*_bfd_error_handler
)
5821 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5822 bfd_set_error (bfd_error_bad_value
);
5827 (*_bfd_error_handler
)
5828 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5829 ibfd
, iflags
, oflags
);
5830 bfd_set_error (bfd_error_bad_value
);
5834 /* Merge Tag_compatibility attributes and any common GNU ones. */
5835 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5841 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5843 /* Print normal ELF private data. */
5844 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5846 if (elf_elfheader (abfd
)->e_flags
!= 0)
5850 /* xgettext:c-format */
5851 fprintf (file
, _("private flags = 0x%lx:"),
5852 elf_elfheader (abfd
)->e_flags
);
5854 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
5855 fprintf (file
, _(" [abiv%ld]"),
5856 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
5863 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5864 of the code entry point, and its section. */
5867 opd_entry_value (asection
*opd_sec
,
5869 asection
**code_sec
,
5871 bfd_boolean in_code_sec
)
5873 bfd
*opd_bfd
= opd_sec
->owner
;
5874 Elf_Internal_Rela
*relocs
;
5875 Elf_Internal_Rela
*lo
, *hi
, *look
;
5878 /* No relocs implies we are linking a --just-symbols object, or looking
5879 at a final linked executable with addr2line or somesuch. */
5880 if (opd_sec
->reloc_count
== 0)
5882 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
5884 if (contents
== NULL
)
5886 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
5887 return (bfd_vma
) -1;
5888 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
5891 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
5892 if (code_sec
!= NULL
)
5894 asection
*sec
, *likely
= NULL
;
5900 && val
< sec
->vma
+ sec
->size
)
5906 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5908 && (sec
->flags
& SEC_LOAD
) != 0
5909 && (sec
->flags
& SEC_ALLOC
) != 0)
5914 if (code_off
!= NULL
)
5915 *code_off
= val
- likely
->vma
;
5921 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5923 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
5925 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5927 /* Go find the opd reloc at the sym address. */
5929 BFD_ASSERT (lo
!= NULL
);
5930 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5934 look
= lo
+ (hi
- lo
) / 2;
5935 if (look
->r_offset
< offset
)
5937 else if (look
->r_offset
> offset
)
5941 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5943 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5944 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5946 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5949 if (symndx
< symtab_hdr
->sh_info
5950 || elf_sym_hashes (opd_bfd
) == NULL
)
5952 Elf_Internal_Sym
*sym
;
5954 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5957 size_t symcnt
= symtab_hdr
->sh_info
;
5958 if (elf_sym_hashes (opd_bfd
) == NULL
)
5959 symcnt
= symtab_hdr
->sh_size
/ symtab_hdr
->sh_entsize
;
5960 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, symcnt
,
5961 0, NULL
, NULL
, NULL
);
5964 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5968 val
= sym
->st_value
;
5969 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5970 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5974 struct elf_link_hash_entry
**sym_hashes
;
5975 struct elf_link_hash_entry
*rh
;
5977 sym_hashes
= elf_sym_hashes (opd_bfd
);
5978 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5981 rh
= elf_follow_link (rh
);
5982 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5983 || rh
->root
.type
== bfd_link_hash_defweak
);
5984 val
= rh
->root
.u
.def
.value
;
5985 sec
= rh
->root
.u
.def
.section
;
5989 /* Handle the odd case where we can be called
5990 during bfd_elf_link_add_symbols before the
5991 symbol hashes have been fully populated. */
5992 Elf_Internal_Sym
*sym
;
5994 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, 1,
5995 symndx
, NULL
, NULL
, NULL
);
5999 val
= sym
->st_value
;
6000 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6004 val
+= look
->r_addend
;
6005 if (code_off
!= NULL
)
6007 if (code_sec
!= NULL
)
6009 if (in_code_sec
&& *code_sec
!= sec
)
6014 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
6015 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6024 /* If the ELF symbol SYM might be a function in SEC, return the
6025 function size and set *CODE_OFF to the function's entry point,
6026 otherwise return zero. */
6028 static bfd_size_type
6029 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6034 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6035 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6039 if (!(sym
->flags
& BSF_SYNTHETIC
))
6040 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6042 if (strcmp (sym
->section
->name
, ".opd") == 0)
6044 if (opd_entry_value (sym
->section
, sym
->value
,
6045 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6047 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6048 symbol. This size has nothing to do with the code size of the
6049 function, which is what we're supposed to return, but the
6050 code size isn't available without looking up the dot-sym.
6051 However, doing that would be a waste of time particularly
6052 since elf_find_function will look at the dot-sym anyway.
6053 Now, elf_find_function will keep the largest size of any
6054 function sym found at the code address of interest, so return
6055 1 here to avoid it incorrectly caching a larger function size
6056 for a small function. This does mean we return the wrong
6057 size for a new-ABI function of size 24, but all that does is
6058 disable caching for such functions. */
6064 if (sym
->section
!= sec
)
6066 *code_off
= sym
->value
;
6073 /* Return true if symbol is defined in a regular object file. */
6076 is_static_defined (struct elf_link_hash_entry
*h
)
6078 return ((h
->root
.type
== bfd_link_hash_defined
6079 || h
->root
.type
== bfd_link_hash_defweak
)
6080 && h
->root
.u
.def
.section
!= NULL
6081 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6084 /* If FDH is a function descriptor symbol, return the associated code
6085 entry symbol if it is defined. Return NULL otherwise. */
6087 static struct ppc_link_hash_entry
*
6088 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6090 if (fdh
->is_func_descriptor
)
6092 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6093 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6094 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6100 /* If FH is a function code entry symbol, return the associated
6101 function descriptor symbol if it is defined. Return NULL otherwise. */
6103 static struct ppc_link_hash_entry
*
6104 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6107 && fh
->oh
->is_func_descriptor
)
6109 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6110 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6111 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6117 /* Mark all our entry sym sections, both opd and code section. */
6120 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6122 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6123 struct bfd_sym_chain
*sym
;
6128 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6130 struct ppc_link_hash_entry
*eh
, *fh
;
6133 eh
= (struct ppc_link_hash_entry
*)
6134 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6137 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6138 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6141 fh
= defined_code_entry (eh
);
6144 sec
= fh
->elf
.root
.u
.def
.section
;
6145 sec
->flags
|= SEC_KEEP
;
6147 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6148 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6149 eh
->elf
.root
.u
.def
.value
,
6150 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6151 sec
->flags
|= SEC_KEEP
;
6153 sec
= eh
->elf
.root
.u
.def
.section
;
6154 sec
->flags
|= SEC_KEEP
;
6158 /* Mark sections containing dynamically referenced symbols. When
6159 building shared libraries, we must assume that any visible symbol is
6163 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6165 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6166 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6167 struct ppc_link_hash_entry
*fdh
;
6168 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6170 /* Dynamic linking info is on the func descriptor sym. */
6171 fdh
= defined_func_desc (eh
);
6175 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6176 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6177 && (eh
->elf
.ref_dynamic
6178 || (eh
->elf
.def_regular
6179 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6180 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6181 && (!info
->executable
6182 || info
->export_dynamic
6185 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6186 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6187 || !bfd_hide_sym_by_version (info
->version_info
,
6188 eh
->elf
.root
.root
.string
)))))
6191 struct ppc_link_hash_entry
*fh
;
6193 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6195 /* Function descriptor syms cause the associated
6196 function code sym section to be marked. */
6197 fh
= defined_code_entry (eh
);
6200 code_sec
= fh
->elf
.root
.u
.def
.section
;
6201 code_sec
->flags
|= SEC_KEEP
;
6203 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6204 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6205 eh
->elf
.root
.u
.def
.value
,
6206 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6207 code_sec
->flags
|= SEC_KEEP
;
6213 /* Return the section that should be marked against GC for a given
6217 ppc64_elf_gc_mark_hook (asection
*sec
,
6218 struct bfd_link_info
*info
,
6219 Elf_Internal_Rela
*rel
,
6220 struct elf_link_hash_entry
*h
,
6221 Elf_Internal_Sym
*sym
)
6225 /* Syms return NULL if we're marking .opd, so we avoid marking all
6226 function sections, as all functions are referenced in .opd. */
6228 if (get_opd_info (sec
) != NULL
)
6233 enum elf_ppc64_reloc_type r_type
;
6234 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6236 r_type
= ELF64_R_TYPE (rel
->r_info
);
6239 case R_PPC64_GNU_VTINHERIT
:
6240 case R_PPC64_GNU_VTENTRY
:
6244 switch (h
->root
.type
)
6246 case bfd_link_hash_defined
:
6247 case bfd_link_hash_defweak
:
6248 eh
= (struct ppc_link_hash_entry
*) h
;
6249 fdh
= defined_func_desc (eh
);
6253 /* Function descriptor syms cause the associated
6254 function code sym section to be marked. */
6255 fh
= defined_code_entry (eh
);
6258 /* They also mark their opd section. */
6259 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6261 rsec
= fh
->elf
.root
.u
.def
.section
;
6263 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6264 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6265 eh
->elf
.root
.u
.def
.value
,
6266 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6267 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6269 rsec
= h
->root
.u
.def
.section
;
6272 case bfd_link_hash_common
:
6273 rsec
= h
->root
.u
.c
.p
->section
;
6277 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6283 struct _opd_sec_data
*opd
;
6285 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6286 opd
= get_opd_info (rsec
);
6287 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6291 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
6298 /* Update the .got, .plt. and dynamic reloc reference counts for the
6299 section being removed. */
6302 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6303 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6305 struct ppc_link_hash_table
*htab
;
6306 Elf_Internal_Shdr
*symtab_hdr
;
6307 struct elf_link_hash_entry
**sym_hashes
;
6308 struct got_entry
**local_got_ents
;
6309 const Elf_Internal_Rela
*rel
, *relend
;
6311 if (info
->relocatable
)
6314 if ((sec
->flags
& SEC_ALLOC
) == 0)
6317 elf_section_data (sec
)->local_dynrel
= NULL
;
6319 htab
= ppc_hash_table (info
);
6323 symtab_hdr
= &elf_symtab_hdr (abfd
);
6324 sym_hashes
= elf_sym_hashes (abfd
);
6325 local_got_ents
= elf_local_got_ents (abfd
);
6327 relend
= relocs
+ sec
->reloc_count
;
6328 for (rel
= relocs
; rel
< relend
; rel
++)
6330 unsigned long r_symndx
;
6331 enum elf_ppc64_reloc_type r_type
;
6332 struct elf_link_hash_entry
*h
= NULL
;
6333 unsigned char tls_type
= 0;
6335 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6336 r_type
= ELF64_R_TYPE (rel
->r_info
);
6337 if (r_symndx
>= symtab_hdr
->sh_info
)
6339 struct ppc_link_hash_entry
*eh
;
6340 struct elf_dyn_relocs
**pp
;
6341 struct elf_dyn_relocs
*p
;
6343 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6344 h
= elf_follow_link (h
);
6345 eh
= (struct ppc_link_hash_entry
*) h
;
6347 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6350 /* Everything must go for SEC. */
6356 if (is_branch_reloc (r_type
))
6358 struct plt_entry
**ifunc
= NULL
;
6361 if (h
->type
== STT_GNU_IFUNC
)
6362 ifunc
= &h
->plt
.plist
;
6364 else if (local_got_ents
!= NULL
)
6366 struct plt_entry
**local_plt
= (struct plt_entry
**)
6367 (local_got_ents
+ symtab_hdr
->sh_info
);
6368 unsigned char *local_got_tls_masks
= (unsigned char *)
6369 (local_plt
+ symtab_hdr
->sh_info
);
6370 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6371 ifunc
= local_plt
+ r_symndx
;
6375 struct plt_entry
*ent
;
6377 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6378 if (ent
->addend
== rel
->r_addend
)
6382 if (ent
->plt
.refcount
> 0)
6383 ent
->plt
.refcount
-= 1;
6390 case R_PPC64_GOT_TLSLD16
:
6391 case R_PPC64_GOT_TLSLD16_LO
:
6392 case R_PPC64_GOT_TLSLD16_HI
:
6393 case R_PPC64_GOT_TLSLD16_HA
:
6394 tls_type
= TLS_TLS
| TLS_LD
;
6397 case R_PPC64_GOT_TLSGD16
:
6398 case R_PPC64_GOT_TLSGD16_LO
:
6399 case R_PPC64_GOT_TLSGD16_HI
:
6400 case R_PPC64_GOT_TLSGD16_HA
:
6401 tls_type
= TLS_TLS
| TLS_GD
;
6404 case R_PPC64_GOT_TPREL16_DS
:
6405 case R_PPC64_GOT_TPREL16_LO_DS
:
6406 case R_PPC64_GOT_TPREL16_HI
:
6407 case R_PPC64_GOT_TPREL16_HA
:
6408 tls_type
= TLS_TLS
| TLS_TPREL
;
6411 case R_PPC64_GOT_DTPREL16_DS
:
6412 case R_PPC64_GOT_DTPREL16_LO_DS
:
6413 case R_PPC64_GOT_DTPREL16_HI
:
6414 case R_PPC64_GOT_DTPREL16_HA
:
6415 tls_type
= TLS_TLS
| TLS_DTPREL
;
6419 case R_PPC64_GOT16_DS
:
6420 case R_PPC64_GOT16_HA
:
6421 case R_PPC64_GOT16_HI
:
6422 case R_PPC64_GOT16_LO
:
6423 case R_PPC64_GOT16_LO_DS
:
6426 struct got_entry
*ent
;
6431 ent
= local_got_ents
[r_symndx
];
6433 for (; ent
!= NULL
; ent
= ent
->next
)
6434 if (ent
->addend
== rel
->r_addend
6435 && ent
->owner
== abfd
6436 && ent
->tls_type
== tls_type
)
6440 if (ent
->got
.refcount
> 0)
6441 ent
->got
.refcount
-= 1;
6445 case R_PPC64_PLT16_HA
:
6446 case R_PPC64_PLT16_HI
:
6447 case R_PPC64_PLT16_LO
:
6451 case R_PPC64_REL14_BRNTAKEN
:
6452 case R_PPC64_REL14_BRTAKEN
:
6456 struct plt_entry
*ent
;
6458 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6459 if (ent
->addend
== rel
->r_addend
)
6461 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6462 ent
->plt
.refcount
-= 1;
6473 /* The maximum size of .sfpr. */
6474 #define SFPR_MAX (218*4)
6476 struct sfpr_def_parms
6478 const char name
[12];
6479 unsigned char lo
, hi
;
6480 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6481 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6484 /* Auto-generate _save*, _rest* functions in .sfpr. */
6487 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6489 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6491 size_t len
= strlen (parm
->name
);
6492 bfd_boolean writing
= FALSE
;
6498 memcpy (sym
, parm
->name
, len
);
6501 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6503 struct elf_link_hash_entry
*h
;
6505 sym
[len
+ 0] = i
/ 10 + '0';
6506 sym
[len
+ 1] = i
% 10 + '0';
6507 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6511 h
->root
.type
= bfd_link_hash_defined
;
6512 h
->root
.u
.def
.section
= htab
->sfpr
;
6513 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6516 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6518 if (htab
->sfpr
->contents
== NULL
)
6520 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6521 if (htab
->sfpr
->contents
== NULL
)
6527 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6529 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6531 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6532 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6540 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6542 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6547 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6549 p
= savegpr0 (abfd
, p
, r
);
6550 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6552 bfd_put_32 (abfd
, BLR
, p
);
6557 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6559 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6564 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6566 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6568 p
= restgpr0 (abfd
, p
, r
);
6569 bfd_put_32 (abfd
, MTLR_R0
, p
);
6573 p
= restgpr0 (abfd
, p
, 30);
6574 p
= restgpr0 (abfd
, p
, 31);
6576 bfd_put_32 (abfd
, BLR
, p
);
6581 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6583 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6588 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6590 p
= savegpr1 (abfd
, p
, r
);
6591 bfd_put_32 (abfd
, BLR
, p
);
6596 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6598 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6603 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6605 p
= restgpr1 (abfd
, p
, r
);
6606 bfd_put_32 (abfd
, BLR
, p
);
6611 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6613 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6618 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6620 p
= savefpr (abfd
, p
, r
);
6621 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6623 bfd_put_32 (abfd
, BLR
, p
);
6628 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6630 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6635 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6637 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6639 p
= restfpr (abfd
, p
, r
);
6640 bfd_put_32 (abfd
, MTLR_R0
, p
);
6644 p
= restfpr (abfd
, p
, 30);
6645 p
= restfpr (abfd
, p
, 31);
6647 bfd_put_32 (abfd
, BLR
, p
);
6652 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6654 p
= savefpr (abfd
, p
, r
);
6655 bfd_put_32 (abfd
, BLR
, p
);
6660 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6662 p
= restfpr (abfd
, p
, r
);
6663 bfd_put_32 (abfd
, BLR
, p
);
6668 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6670 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6672 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6677 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6679 p
= savevr (abfd
, p
, r
);
6680 bfd_put_32 (abfd
, BLR
, p
);
6685 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6687 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6689 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6694 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6696 p
= restvr (abfd
, p
, r
);
6697 bfd_put_32 (abfd
, BLR
, p
);
6701 /* Called via elf_link_hash_traverse to transfer dynamic linking
6702 information on function code symbol entries to their corresponding
6703 function descriptor symbol entries. */
6706 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6708 struct bfd_link_info
*info
;
6709 struct ppc_link_hash_table
*htab
;
6710 struct plt_entry
*ent
;
6711 struct ppc_link_hash_entry
*fh
;
6712 struct ppc_link_hash_entry
*fdh
;
6713 bfd_boolean force_local
;
6715 fh
= (struct ppc_link_hash_entry
*) h
;
6716 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6720 htab
= ppc_hash_table (info
);
6724 /* Resolve undefined references to dot-symbols as the value
6725 in the function descriptor, if we have one in a regular object.
6726 This is to satisfy cases like ".quad .foo". Calls to functions
6727 in dynamic objects are handled elsewhere. */
6728 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6729 && fh
->was_undefined
6730 && (fdh
= defined_func_desc (fh
)) != NULL
6731 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6732 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6733 fdh
->elf
.root
.u
.def
.value
,
6734 &fh
->elf
.root
.u
.def
.section
,
6735 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6737 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6738 fh
->elf
.forced_local
= 1;
6739 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6740 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6743 /* If this is a function code symbol, transfer dynamic linking
6744 information to the function descriptor symbol. */
6748 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6749 if (ent
->plt
.refcount
> 0)
6752 || fh
->elf
.root
.root
.string
[0] != '.'
6753 || fh
->elf
.root
.root
.string
[1] == '\0')
6756 /* Find the corresponding function descriptor symbol. Create it
6757 as undefined if necessary. */
6759 fdh
= lookup_fdh (fh
, htab
);
6761 && !info
->executable
6762 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6763 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6765 fdh
= make_fdh (info
, fh
);
6770 /* Fake function descriptors are made undefweak. If the function
6771 code symbol is strong undefined, make the fake sym the same.
6772 If the function code symbol is defined, then force the fake
6773 descriptor local; We can't support overriding of symbols in a
6774 shared library on a fake descriptor. */
6778 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6780 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6782 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6783 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6785 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6786 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6788 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6793 && !fdh
->elf
.forced_local
6794 && (!info
->executable
6795 || fdh
->elf
.def_dynamic
6796 || fdh
->elf
.ref_dynamic
6797 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6798 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6800 if (fdh
->elf
.dynindx
== -1)
6801 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6803 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6804 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6805 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6806 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6807 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6809 move_plt_plist (fh
, fdh
);
6810 fdh
->elf
.needs_plt
= 1;
6812 fdh
->is_func_descriptor
= 1;
6817 /* Now that the info is on the function descriptor, clear the
6818 function code sym info. Any function code syms for which we
6819 don't have a definition in a regular file, we force local.
6820 This prevents a shared library from exporting syms that have
6821 been imported from another library. Function code syms that
6822 are really in the library we must leave global to prevent the
6823 linker dragging in a definition from a static library. */
6824 force_local
= (!fh
->elf
.def_regular
6826 || !fdh
->elf
.def_regular
6827 || fdh
->elf
.forced_local
);
6828 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6833 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6834 this hook to a) provide some gcc support functions, and b) transfer
6835 dynamic linking information gathered so far on function code symbol
6836 entries, to their corresponding function descriptor symbol entries. */
6839 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6840 struct bfd_link_info
*info
)
6842 struct ppc_link_hash_table
*htab
;
6844 static const struct sfpr_def_parms funcs
[] =
6846 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6847 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6848 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6849 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6850 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6851 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6852 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6853 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6854 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6855 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6856 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6857 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6860 htab
= ppc_hash_table (info
);
6864 if (!info
->relocatable
6865 && htab
->elf
.hgot
!= NULL
)
6867 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6868 /* Make .TOC. defined so as to prevent it being made dynamic.
6869 The wrong value here is fixed later in ppc64_elf_set_toc. */
6870 htab
->elf
.hgot
->type
= STT_OBJECT
;
6871 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
6872 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
6873 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
6874 htab
->elf
.hgot
->def_regular
= 1;
6875 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
6879 if (htab
->sfpr
== NULL
)
6880 /* We don't have any relocs. */
6883 /* Provide any missing _save* and _rest* functions. */
6884 htab
->sfpr
->size
= 0;
6885 if (htab
->params
->save_restore_funcs
)
6886 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6887 if (!sfpr_define (info
, &funcs
[i
]))
6890 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6892 if (htab
->sfpr
->size
== 0)
6893 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6898 /* Return true if we have dynamic relocs that apply to read-only sections. */
6901 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
6903 struct ppc_link_hash_entry
*eh
;
6904 struct elf_dyn_relocs
*p
;
6906 eh
= (struct ppc_link_hash_entry
*) h
;
6907 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6909 asection
*s
= p
->sec
->output_section
;
6911 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6917 /* Adjust a symbol defined by a dynamic object and referenced by a
6918 regular object. The current definition is in some section of the
6919 dynamic object, but we're not including those sections. We have to
6920 change the definition to something the rest of the link can
6924 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6925 struct elf_link_hash_entry
*h
)
6927 struct ppc_link_hash_table
*htab
;
6930 htab
= ppc_hash_table (info
);
6934 /* Deal with function syms. */
6935 if (h
->type
== STT_FUNC
6936 || h
->type
== STT_GNU_IFUNC
6939 /* Clear procedure linkage table information for any symbol that
6940 won't need a .plt entry. */
6941 struct plt_entry
*ent
;
6942 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6943 if (ent
->plt
.refcount
> 0)
6946 || (h
->type
!= STT_GNU_IFUNC
6947 && (SYMBOL_CALLS_LOCAL (info
, h
)
6948 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6949 && h
->root
.type
== bfd_link_hash_undefweak
))))
6951 h
->plt
.plist
= NULL
;
6954 else if (abiversion (info
->output_bfd
) == 2)
6956 /* After adjust_dynamic_symbol, non_got_ref set in the
6957 non-shared case means that we have allocated space in
6958 .dynbss for the symbol and thus dyn_relocs for this
6959 symbol should be discarded.
6960 If we get here we know we are making a PLT entry for this
6961 symbol, and in an executable we'd normally resolve
6962 relocations against this symbol to the PLT entry. Allow
6963 dynamic relocs if the reference is weak, and the dynamic
6964 relocs will not cause text relocation. */
6965 if (!h
->ref_regular_nonweak
6967 && h
->type
!= STT_GNU_IFUNC
6968 && !readonly_dynrelocs (h
))
6971 /* If making a plt entry, then we don't need copy relocs. */
6976 h
->plt
.plist
= NULL
;
6978 /* If this is a weak symbol, and there is a real definition, the
6979 processor independent code will have arranged for us to see the
6980 real definition first, and we can just use the same value. */
6981 if (h
->u
.weakdef
!= NULL
)
6983 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6984 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6985 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6986 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6987 if (ELIMINATE_COPY_RELOCS
)
6988 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6992 /* If we are creating a shared library, we must presume that the
6993 only references to the symbol are via the global offset table.
6994 For such cases we need not do anything here; the relocations will
6995 be handled correctly by relocate_section. */
6999 /* If there are no references to this symbol that do not use the
7000 GOT, we don't need to generate a copy reloc. */
7001 if (!h
->non_got_ref
)
7004 /* Don't generate a copy reloc for symbols defined in the executable. */
7005 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7008 /* If we didn't find any dynamic relocs in read-only sections, then
7009 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7010 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7016 if (h
->plt
.plist
!= NULL
)
7018 /* We should never get here, but unfortunately there are versions
7019 of gcc out there that improperly (for this ABI) put initialized
7020 function pointers, vtable refs and suchlike in read-only
7021 sections. Allow them to proceed, but warn that this might
7022 break at runtime. */
7023 info
->callbacks
->einfo
7024 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7025 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7026 h
->root
.root
.string
);
7029 /* This is a reference to a symbol defined by a dynamic object which
7030 is not a function. */
7032 /* We must allocate the symbol in our .dynbss section, which will
7033 become part of the .bss section of the executable. There will be
7034 an entry for this symbol in the .dynsym section. The dynamic
7035 object will contain position independent code, so all references
7036 from the dynamic object to this symbol will go through the global
7037 offset table. The dynamic linker will use the .dynsym entry to
7038 determine the address it must put in the global offset table, so
7039 both the dynamic object and the regular object will refer to the
7040 same memory location for the variable. */
7042 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7043 to copy the initial value out of the dynamic object and into the
7044 runtime process image. We need to remember the offset into the
7045 .rela.bss section we are going to use. */
7046 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7048 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7054 return _bfd_elf_adjust_dynamic_copy (h
, s
);
7057 /* If given a function descriptor symbol, hide both the function code
7058 sym and the descriptor. */
7060 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7061 struct elf_link_hash_entry
*h
,
7062 bfd_boolean force_local
)
7064 struct ppc_link_hash_entry
*eh
;
7065 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7067 eh
= (struct ppc_link_hash_entry
*) h
;
7068 if (eh
->is_func_descriptor
)
7070 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7075 struct ppc_link_hash_table
*htab
;
7078 /* We aren't supposed to use alloca in BFD because on
7079 systems which do not have alloca the version in libiberty
7080 calls xmalloc, which might cause the program to crash
7081 when it runs out of memory. This function doesn't have a
7082 return status, so there's no way to gracefully return an
7083 error. So cheat. We know that string[-1] can be safely
7084 accessed; It's either a string in an ELF string table,
7085 or allocated in an objalloc structure. */
7087 p
= eh
->elf
.root
.root
.string
- 1;
7090 htab
= ppc_hash_table (info
);
7094 fh
= (struct ppc_link_hash_entry
*)
7095 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7098 /* Unfortunately, if it so happens that the string we were
7099 looking for was allocated immediately before this string,
7100 then we overwrote the string terminator. That's the only
7101 reason the lookup should fail. */
7104 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7105 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7107 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7108 fh
= (struct ppc_link_hash_entry
*)
7109 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7118 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7123 get_sym_h (struct elf_link_hash_entry
**hp
,
7124 Elf_Internal_Sym
**symp
,
7126 unsigned char **tls_maskp
,
7127 Elf_Internal_Sym
**locsymsp
,
7128 unsigned long r_symndx
,
7131 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7133 if (r_symndx
>= symtab_hdr
->sh_info
)
7135 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7136 struct elf_link_hash_entry
*h
;
7138 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7139 h
= elf_follow_link (h
);
7147 if (symsecp
!= NULL
)
7149 asection
*symsec
= NULL
;
7150 if (h
->root
.type
== bfd_link_hash_defined
7151 || h
->root
.type
== bfd_link_hash_defweak
)
7152 symsec
= h
->root
.u
.def
.section
;
7156 if (tls_maskp
!= NULL
)
7158 struct ppc_link_hash_entry
*eh
;
7160 eh
= (struct ppc_link_hash_entry
*) h
;
7161 *tls_maskp
= &eh
->tls_mask
;
7166 Elf_Internal_Sym
*sym
;
7167 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7169 if (locsyms
== NULL
)
7171 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7172 if (locsyms
== NULL
)
7173 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7174 symtab_hdr
->sh_info
,
7175 0, NULL
, NULL
, NULL
);
7176 if (locsyms
== NULL
)
7178 *locsymsp
= locsyms
;
7180 sym
= locsyms
+ r_symndx
;
7188 if (symsecp
!= NULL
)
7189 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7191 if (tls_maskp
!= NULL
)
7193 struct got_entry
**lgot_ents
;
7194 unsigned char *tls_mask
;
7197 lgot_ents
= elf_local_got_ents (ibfd
);
7198 if (lgot_ents
!= NULL
)
7200 struct plt_entry
**local_plt
= (struct plt_entry
**)
7201 (lgot_ents
+ symtab_hdr
->sh_info
);
7202 unsigned char *lgot_masks
= (unsigned char *)
7203 (local_plt
+ symtab_hdr
->sh_info
);
7204 tls_mask
= &lgot_masks
[r_symndx
];
7206 *tls_maskp
= tls_mask
;
7212 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7213 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7214 type suitable for optimization, and 1 otherwise. */
7217 get_tls_mask (unsigned char **tls_maskp
,
7218 unsigned long *toc_symndx
,
7219 bfd_vma
*toc_addend
,
7220 Elf_Internal_Sym
**locsymsp
,
7221 const Elf_Internal_Rela
*rel
,
7224 unsigned long r_symndx
;
7226 struct elf_link_hash_entry
*h
;
7227 Elf_Internal_Sym
*sym
;
7231 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7232 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7235 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7237 || ppc64_elf_section_data (sec
) == NULL
7238 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7241 /* Look inside a TOC section too. */
7244 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7245 off
= h
->root
.u
.def
.value
;
7248 off
= sym
->st_value
;
7249 off
+= rel
->r_addend
;
7250 BFD_ASSERT (off
% 8 == 0);
7251 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7252 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7253 if (toc_symndx
!= NULL
)
7254 *toc_symndx
= r_symndx
;
7255 if (toc_addend
!= NULL
)
7256 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7257 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7259 if ((h
== NULL
|| is_static_defined (h
))
7260 && (next_r
== -1 || next_r
== -2))
7265 /* Find (or create) an entry in the tocsave hash table. */
7267 static struct tocsave_entry
*
7268 tocsave_find (struct ppc_link_hash_table
*htab
,
7269 enum insert_option insert
,
7270 Elf_Internal_Sym
**local_syms
,
7271 const Elf_Internal_Rela
*irela
,
7274 unsigned long r_indx
;
7275 struct elf_link_hash_entry
*h
;
7276 Elf_Internal_Sym
*sym
;
7277 struct tocsave_entry ent
, *p
;
7279 struct tocsave_entry
**slot
;
7281 r_indx
= ELF64_R_SYM (irela
->r_info
);
7282 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7284 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7286 (*_bfd_error_handler
)
7287 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7292 ent
.offset
= h
->root
.u
.def
.value
;
7294 ent
.offset
= sym
->st_value
;
7295 ent
.offset
+= irela
->r_addend
;
7297 hash
= tocsave_htab_hash (&ent
);
7298 slot
= ((struct tocsave_entry
**)
7299 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7305 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7314 /* Adjust all global syms defined in opd sections. In gcc generated
7315 code for the old ABI, these will already have been done. */
7318 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7320 struct ppc_link_hash_entry
*eh
;
7322 struct _opd_sec_data
*opd
;
7324 if (h
->root
.type
== bfd_link_hash_indirect
)
7327 if (h
->root
.type
!= bfd_link_hash_defined
7328 && h
->root
.type
!= bfd_link_hash_defweak
)
7331 eh
= (struct ppc_link_hash_entry
*) h
;
7332 if (eh
->adjust_done
)
7335 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7336 opd
= get_opd_info (sym_sec
);
7337 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7339 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
7342 /* This entry has been deleted. */
7343 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7346 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7347 if (discarded_section (dsec
))
7349 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7353 eh
->elf
.root
.u
.def
.value
= 0;
7354 eh
->elf
.root
.u
.def
.section
= dsec
;
7357 eh
->elf
.root
.u
.def
.value
+= adjust
;
7358 eh
->adjust_done
= 1;
7363 /* Handles decrementing dynamic reloc counts for the reloc specified by
7364 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7365 have already been determined. */
7368 dec_dynrel_count (bfd_vma r_info
,
7370 struct bfd_link_info
*info
,
7371 Elf_Internal_Sym
**local_syms
,
7372 struct elf_link_hash_entry
*h
,
7373 Elf_Internal_Sym
*sym
)
7375 enum elf_ppc64_reloc_type r_type
;
7376 asection
*sym_sec
= NULL
;
7378 /* Can this reloc be dynamic? This switch, and later tests here
7379 should be kept in sync with the code in check_relocs. */
7380 r_type
= ELF64_R_TYPE (r_info
);
7386 case R_PPC64_TPREL16
:
7387 case R_PPC64_TPREL16_LO
:
7388 case R_PPC64_TPREL16_HI
:
7389 case R_PPC64_TPREL16_HA
:
7390 case R_PPC64_TPREL16_DS
:
7391 case R_PPC64_TPREL16_LO_DS
:
7392 case R_PPC64_TPREL16_HIGH
:
7393 case R_PPC64_TPREL16_HIGHA
:
7394 case R_PPC64_TPREL16_HIGHER
:
7395 case R_PPC64_TPREL16_HIGHERA
:
7396 case R_PPC64_TPREL16_HIGHEST
:
7397 case R_PPC64_TPREL16_HIGHESTA
:
7401 case R_PPC64_TPREL64
:
7402 case R_PPC64_DTPMOD64
:
7403 case R_PPC64_DTPREL64
:
7404 case R_PPC64_ADDR64
:
7408 case R_PPC64_ADDR14
:
7409 case R_PPC64_ADDR14_BRNTAKEN
:
7410 case R_PPC64_ADDR14_BRTAKEN
:
7411 case R_PPC64_ADDR16
:
7412 case R_PPC64_ADDR16_DS
:
7413 case R_PPC64_ADDR16_HA
:
7414 case R_PPC64_ADDR16_HI
:
7415 case R_PPC64_ADDR16_HIGH
:
7416 case R_PPC64_ADDR16_HIGHA
:
7417 case R_PPC64_ADDR16_HIGHER
:
7418 case R_PPC64_ADDR16_HIGHERA
:
7419 case R_PPC64_ADDR16_HIGHEST
:
7420 case R_PPC64_ADDR16_HIGHESTA
:
7421 case R_PPC64_ADDR16_LO
:
7422 case R_PPC64_ADDR16_LO_DS
:
7423 case R_PPC64_ADDR24
:
7424 case R_PPC64_ADDR32
:
7425 case R_PPC64_UADDR16
:
7426 case R_PPC64_UADDR32
:
7427 case R_PPC64_UADDR64
:
7432 if (local_syms
!= NULL
)
7434 unsigned long r_symndx
;
7435 bfd
*ibfd
= sec
->owner
;
7437 r_symndx
= ELF64_R_SYM (r_info
);
7438 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7443 && (must_be_dyn_reloc (info
, r_type
)
7445 && (!SYMBOLIC_BIND (info
, h
)
7446 || h
->root
.type
== bfd_link_hash_defweak
7447 || !h
->def_regular
))))
7448 || (ELIMINATE_COPY_RELOCS
7451 && (h
->root
.type
== bfd_link_hash_defweak
7452 || !h
->def_regular
)))
7459 struct elf_dyn_relocs
*p
;
7460 struct elf_dyn_relocs
**pp
;
7461 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7463 /* elf_gc_sweep may have already removed all dyn relocs associated
7464 with local syms for a given section. Also, symbol flags are
7465 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7466 report a dynreloc miscount. */
7467 if (*pp
== NULL
&& info
->gc_sections
)
7470 while ((p
= *pp
) != NULL
)
7474 if (!must_be_dyn_reloc (info
, r_type
))
7486 struct ppc_dyn_relocs
*p
;
7487 struct ppc_dyn_relocs
**pp
;
7489 bfd_boolean is_ifunc
;
7491 if (local_syms
== NULL
)
7492 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7493 if (sym_sec
== NULL
)
7496 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7497 pp
= (struct ppc_dyn_relocs
**) vpp
;
7499 if (*pp
== NULL
&& info
->gc_sections
)
7502 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7503 while ((p
= *pp
) != NULL
)
7505 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7516 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7518 bfd_set_error (bfd_error_bad_value
);
7522 /* Remove unused Official Procedure Descriptor entries. Currently we
7523 only remove those associated with functions in discarded link-once
7524 sections, or weakly defined functions that have been overridden. It
7525 would be possible to remove many more entries for statically linked
7529 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7532 bfd_boolean some_edited
= FALSE
;
7533 asection
*need_pad
= NULL
;
7534 struct ppc_link_hash_table
*htab
;
7536 htab
= ppc_hash_table (info
);
7540 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7543 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7544 Elf_Internal_Shdr
*symtab_hdr
;
7545 Elf_Internal_Sym
*local_syms
;
7547 struct _opd_sec_data
*opd
;
7548 bfd_boolean need_edit
, add_aux_fields
;
7549 bfd_size_type cnt_16b
= 0;
7551 if (!is_ppc64_elf (ibfd
))
7554 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7555 if (sec
== NULL
|| sec
->size
== 0)
7558 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7561 if (sec
->output_section
== bfd_abs_section_ptr
)
7564 /* Look through the section relocs. */
7565 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7569 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7571 /* Read the relocations. */
7572 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7574 if (relstart
== NULL
)
7577 /* First run through the relocs to check they are sane, and to
7578 determine whether we need to edit this opd section. */
7582 relend
= relstart
+ sec
->reloc_count
;
7583 for (rel
= relstart
; rel
< relend
; )
7585 enum elf_ppc64_reloc_type r_type
;
7586 unsigned long r_symndx
;
7588 struct elf_link_hash_entry
*h
;
7589 Elf_Internal_Sym
*sym
;
7591 /* .opd contains a regular array of 16 or 24 byte entries. We're
7592 only interested in the reloc pointing to a function entry
7594 if (rel
->r_offset
!= offset
7595 || rel
+ 1 >= relend
7596 || (rel
+ 1)->r_offset
!= offset
+ 8)
7598 /* If someone messes with .opd alignment then after a
7599 "ld -r" we might have padding in the middle of .opd.
7600 Also, there's nothing to prevent someone putting
7601 something silly in .opd with the assembler. No .opd
7602 optimization for them! */
7604 (*_bfd_error_handler
)
7605 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7610 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7611 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7613 (*_bfd_error_handler
)
7614 (_("%B: unexpected reloc type %u in .opd section"),
7620 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7621 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7625 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7627 const char *sym_name
;
7629 sym_name
= h
->root
.root
.string
;
7631 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7634 (*_bfd_error_handler
)
7635 (_("%B: undefined sym `%s' in .opd section"),
7641 /* opd entries are always for functions defined in the
7642 current input bfd. If the symbol isn't defined in the
7643 input bfd, then we won't be using the function in this
7644 bfd; It must be defined in a linkonce section in another
7645 bfd, or is weak. It's also possible that we are
7646 discarding the function due to a linker script /DISCARD/,
7647 which we test for via the output_section. */
7648 if (sym_sec
->owner
!= ibfd
7649 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7654 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7656 if (sec
->size
== offset
+ 24)
7661 if (rel
== relend
&& sec
->size
== offset
+ 16)
7669 if (rel
->r_offset
== offset
+ 24)
7671 else if (rel
->r_offset
!= offset
+ 16)
7673 else if (rel
+ 1 < relend
7674 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7675 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7680 else if (rel
+ 2 < relend
7681 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7682 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7691 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7693 if (need_edit
|| add_aux_fields
)
7695 Elf_Internal_Rela
*write_rel
;
7696 Elf_Internal_Shdr
*rel_hdr
;
7697 bfd_byte
*rptr
, *wptr
;
7698 bfd_byte
*new_contents
;
7703 new_contents
= NULL
;
7704 amt
= sec
->size
* sizeof (long) / 8;
7705 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7706 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7707 if (opd
->adjust
== NULL
)
7709 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7711 /* This seems a waste of time as input .opd sections are all
7712 zeros as generated by gcc, but I suppose there's no reason
7713 this will always be so. We might start putting something in
7714 the third word of .opd entries. */
7715 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7718 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7723 if (local_syms
!= NULL
7724 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7726 if (elf_section_data (sec
)->relocs
!= relstart
)
7730 sec
->contents
= loc
;
7731 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7734 elf_section_data (sec
)->relocs
= relstart
;
7736 new_contents
= sec
->contents
;
7739 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7740 if (new_contents
== NULL
)
7744 wptr
= new_contents
;
7745 rptr
= sec
->contents
;
7747 write_rel
= relstart
;
7751 for (rel
= relstart
; rel
< relend
; rel
++)
7753 unsigned long r_symndx
;
7755 struct elf_link_hash_entry
*h
;
7756 Elf_Internal_Sym
*sym
;
7758 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7759 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7763 if (rel
->r_offset
== offset
)
7765 struct ppc_link_hash_entry
*fdh
= NULL
;
7767 /* See if the .opd entry is full 24 byte or
7768 16 byte (with fd_aux entry overlapped with next
7771 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7772 || (rel
+ 3 < relend
7773 && rel
[2].r_offset
== offset
+ 16
7774 && rel
[3].r_offset
== offset
+ 24
7775 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7776 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7780 && h
->root
.root
.string
[0] == '.')
7782 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
7784 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7785 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7789 skip
= (sym_sec
->owner
!= ibfd
7790 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7793 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7795 /* Arrange for the function descriptor sym
7797 fdh
->elf
.root
.u
.def
.value
= 0;
7798 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7800 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7804 /* We'll be keeping this opd entry. */
7808 /* Redefine the function descriptor symbol to
7809 this location in the opd section. It is
7810 necessary to update the value here rather
7811 than using an array of adjustments as we do
7812 for local symbols, because various places
7813 in the generic ELF code use the value
7814 stored in u.def.value. */
7815 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7816 fdh
->adjust_done
= 1;
7819 /* Local syms are a bit tricky. We could
7820 tweak them as they can be cached, but
7821 we'd need to look through the local syms
7822 for the function descriptor sym which we
7823 don't have at the moment. So keep an
7824 array of adjustments. */
7825 opd
->adjust
[rel
->r_offset
/ 8]
7826 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7829 memcpy (wptr
, rptr
, opd_ent_size
);
7830 wptr
+= opd_ent_size
;
7831 if (add_aux_fields
&& opd_ent_size
== 16)
7833 memset (wptr
, '\0', 8);
7837 rptr
+= opd_ent_size
;
7838 offset
+= opd_ent_size
;
7844 && !info
->relocatable
7845 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7851 /* We need to adjust any reloc offsets to point to the
7852 new opd entries. While we're at it, we may as well
7853 remove redundant relocs. */
7854 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7855 if (write_rel
!= rel
)
7856 memcpy (write_rel
, rel
, sizeof (*rel
));
7861 sec
->size
= wptr
- new_contents
;
7862 sec
->reloc_count
= write_rel
- relstart
;
7865 free (sec
->contents
);
7866 sec
->contents
= new_contents
;
7869 /* Fudge the header size too, as this is used later in
7870 elf_bfd_final_link if we are emitting relocs. */
7871 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7872 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7875 else if (elf_section_data (sec
)->relocs
!= relstart
)
7878 if (local_syms
!= NULL
7879 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7881 if (!info
->keep_memory
)
7884 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7889 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7891 /* If we are doing a final link and the last .opd entry is just 16 byte
7892 long, add a 8 byte padding after it. */
7893 if (need_pad
!= NULL
&& !info
->relocatable
)
7897 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7899 BFD_ASSERT (need_pad
->size
> 0);
7901 p
= bfd_malloc (need_pad
->size
+ 8);
7905 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7906 p
, 0, need_pad
->size
))
7909 need_pad
->contents
= p
;
7910 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7914 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7918 need_pad
->contents
= p
;
7921 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7922 need_pad
->size
+= 8;
7928 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7931 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
7933 struct ppc_link_hash_table
*htab
;
7935 htab
= ppc_hash_table (info
);
7939 if (abiversion (info
->output_bfd
) == 1)
7942 if (htab
->params
->no_multi_toc
)
7943 htab
->do_multi_toc
= 0;
7944 else if (!htab
->do_multi_toc
)
7945 htab
->params
->no_multi_toc
= 1;
7947 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7948 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7949 FALSE
, FALSE
, TRUE
));
7950 /* Move dynamic linking info to the function descriptor sym. */
7951 if (htab
->tls_get_addr
!= NULL
)
7952 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7953 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7954 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7955 FALSE
, FALSE
, TRUE
));
7956 if (!htab
->params
->no_tls_get_addr_opt
)
7958 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7960 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7961 FALSE
, FALSE
, TRUE
);
7963 func_desc_adjust (opt
, info
);
7964 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7965 FALSE
, FALSE
, TRUE
);
7967 && (opt_fd
->root
.type
== bfd_link_hash_defined
7968 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7970 /* If glibc supports an optimized __tls_get_addr call stub,
7971 signalled by the presence of __tls_get_addr_opt, and we'll
7972 be calling __tls_get_addr via a plt call stub, then
7973 make __tls_get_addr point to __tls_get_addr_opt. */
7974 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7975 if (htab
->elf
.dynamic_sections_created
7977 && (tga_fd
->type
== STT_FUNC
7978 || tga_fd
->needs_plt
)
7979 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7980 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7981 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7983 struct plt_entry
*ent
;
7985 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7986 if (ent
->plt
.refcount
> 0)
7990 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7991 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7992 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7993 if (opt_fd
->dynindx
!= -1)
7995 /* Use __tls_get_addr_opt in dynamic relocations. */
7996 opt_fd
->dynindx
= -1;
7997 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7998 opt_fd
->dynstr_index
);
7999 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8002 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8003 tga
= &htab
->tls_get_addr
->elf
;
8004 if (opt
!= NULL
&& tga
!= NULL
)
8006 tga
->root
.type
= bfd_link_hash_indirect
;
8007 tga
->root
.u
.i
.link
= &opt
->root
;
8008 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8009 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8011 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8013 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8014 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8015 if (htab
->tls_get_addr
!= NULL
)
8017 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8018 htab
->tls_get_addr
->is_func
= 1;
8024 htab
->params
->no_tls_get_addr_opt
= TRUE
;
8026 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8029 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8033 branch_reloc_hash_match (const bfd
*ibfd
,
8034 const Elf_Internal_Rela
*rel
,
8035 const struct ppc_link_hash_entry
*hash1
,
8036 const struct ppc_link_hash_entry
*hash2
)
8038 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8039 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8040 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8042 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8044 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8045 struct elf_link_hash_entry
*h
;
8047 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8048 h
= elf_follow_link (h
);
8049 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8055 /* Run through all the TLS relocs looking for optimization
8056 opportunities. The linker has been hacked (see ppc64elf.em) to do
8057 a preliminary section layout so that we know the TLS segment
8058 offsets. We can't optimize earlier because some optimizations need
8059 to know the tp offset, and we need to optimize before allocating
8060 dynamic relocations. */
8063 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8067 struct ppc_link_hash_table
*htab
;
8068 unsigned char *toc_ref
;
8071 if (info
->relocatable
|| !info
->executable
)
8074 htab
= ppc_hash_table (info
);
8078 /* Make two passes over the relocs. On the first pass, mark toc
8079 entries involved with tls relocs, and check that tls relocs
8080 involved in setting up a tls_get_addr call are indeed followed by
8081 such a call. If they are not, we can't do any tls optimization.
8082 On the second pass twiddle tls_mask flags to notify
8083 relocate_section that optimization can be done, and adjust got
8084 and plt refcounts. */
8086 for (pass
= 0; pass
< 2; ++pass
)
8087 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8089 Elf_Internal_Sym
*locsyms
= NULL
;
8090 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8092 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8093 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8095 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8096 bfd_boolean found_tls_get_addr_arg
= 0;
8098 /* Read the relocations. */
8099 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8101 if (relstart
== NULL
)
8107 relend
= relstart
+ sec
->reloc_count
;
8108 for (rel
= relstart
; rel
< relend
; rel
++)
8110 enum elf_ppc64_reloc_type r_type
;
8111 unsigned long r_symndx
;
8112 struct elf_link_hash_entry
*h
;
8113 Elf_Internal_Sym
*sym
;
8115 unsigned char *tls_mask
;
8116 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8118 bfd_boolean ok_tprel
, is_local
;
8119 long toc_ref_index
= 0;
8120 int expecting_tls_get_addr
= 0;
8121 bfd_boolean ret
= FALSE
;
8123 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8124 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8128 if (elf_section_data (sec
)->relocs
!= relstart
)
8130 if (toc_ref
!= NULL
)
8133 && (elf_symtab_hdr (ibfd
).contents
8134 != (unsigned char *) locsyms
))
8141 if (h
->root
.type
== bfd_link_hash_defined
8142 || h
->root
.type
== bfd_link_hash_defweak
)
8143 value
= h
->root
.u
.def
.value
;
8144 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8148 found_tls_get_addr_arg
= 0;
8153 /* Symbols referenced by TLS relocs must be of type
8154 STT_TLS. So no need for .opd local sym adjust. */
8155 value
= sym
->st_value
;
8164 && h
->root
.type
== bfd_link_hash_undefweak
)
8168 value
+= sym_sec
->output_offset
;
8169 value
+= sym_sec
->output_section
->vma
;
8170 value
-= htab
->elf
.tls_sec
->vma
;
8171 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8172 < (bfd_vma
) 1 << 32);
8176 r_type
= ELF64_R_TYPE (rel
->r_info
);
8177 /* If this section has old-style __tls_get_addr calls
8178 without marker relocs, then check that each
8179 __tls_get_addr call reloc is preceded by a reloc
8180 that conceivably belongs to the __tls_get_addr arg
8181 setup insn. If we don't find matching arg setup
8182 relocs, don't do any tls optimization. */
8184 && sec
->has_tls_get_addr_call
8186 && (h
== &htab
->tls_get_addr
->elf
8187 || h
== &htab
->tls_get_addr_fd
->elf
)
8188 && !found_tls_get_addr_arg
8189 && is_branch_reloc (r_type
))
8191 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8192 "TLS optimization disabled\n"),
8193 ibfd
, sec
, rel
->r_offset
);
8198 found_tls_get_addr_arg
= 0;
8201 case R_PPC64_GOT_TLSLD16
:
8202 case R_PPC64_GOT_TLSLD16_LO
:
8203 expecting_tls_get_addr
= 1;
8204 found_tls_get_addr_arg
= 1;
8207 case R_PPC64_GOT_TLSLD16_HI
:
8208 case R_PPC64_GOT_TLSLD16_HA
:
8209 /* These relocs should never be against a symbol
8210 defined in a shared lib. Leave them alone if
8211 that turns out to be the case. */
8218 tls_type
= TLS_TLS
| TLS_LD
;
8221 case R_PPC64_GOT_TLSGD16
:
8222 case R_PPC64_GOT_TLSGD16_LO
:
8223 expecting_tls_get_addr
= 1;
8224 found_tls_get_addr_arg
= 1;
8227 case R_PPC64_GOT_TLSGD16_HI
:
8228 case R_PPC64_GOT_TLSGD16_HA
:
8234 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8236 tls_type
= TLS_TLS
| TLS_GD
;
8239 case R_PPC64_GOT_TPREL16_DS
:
8240 case R_PPC64_GOT_TPREL16_LO_DS
:
8241 case R_PPC64_GOT_TPREL16_HI
:
8242 case R_PPC64_GOT_TPREL16_HA
:
8247 tls_clear
= TLS_TPREL
;
8248 tls_type
= TLS_TLS
| TLS_TPREL
;
8255 found_tls_get_addr_arg
= 1;
8260 case R_PPC64_TOC16_LO
:
8261 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8264 /* Mark this toc entry as referenced by a TLS
8265 code sequence. We can do that now in the
8266 case of R_PPC64_TLS, and after checking for
8267 tls_get_addr for the TOC16 relocs. */
8268 if (toc_ref
== NULL
)
8269 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8270 if (toc_ref
== NULL
)
8274 value
= h
->root
.u
.def
.value
;
8276 value
= sym
->st_value
;
8277 value
+= rel
->r_addend
;
8278 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
8279 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8280 if (r_type
== R_PPC64_TLS
8281 || r_type
== R_PPC64_TLSGD
8282 || r_type
== R_PPC64_TLSLD
)
8284 toc_ref
[toc_ref_index
] = 1;
8288 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8293 expecting_tls_get_addr
= 2;
8296 case R_PPC64_TPREL64
:
8300 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8305 tls_set
= TLS_EXPLICIT
;
8306 tls_clear
= TLS_TPREL
;
8311 case R_PPC64_DTPMOD64
:
8315 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8317 if (rel
+ 1 < relend
8319 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8320 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8324 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8327 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8336 tls_set
= TLS_EXPLICIT
;
8347 if (!expecting_tls_get_addr
8348 || !sec
->has_tls_get_addr_call
)
8351 if (rel
+ 1 < relend
8352 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8354 htab
->tls_get_addr_fd
))
8356 if (expecting_tls_get_addr
== 2)
8358 /* Check for toc tls entries. */
8359 unsigned char *toc_tls
;
8362 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8367 if (toc_tls
!= NULL
)
8369 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8370 found_tls_get_addr_arg
= 1;
8372 toc_ref
[toc_ref_index
] = 1;
8378 if (expecting_tls_get_addr
!= 1)
8381 /* Uh oh, we didn't find the expected call. We
8382 could just mark this symbol to exclude it
8383 from tls optimization but it's safer to skip
8384 the entire optimization. */
8385 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8386 "TLS optimization disabled\n"),
8387 ibfd
, sec
, rel
->r_offset
);
8392 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8394 struct plt_entry
*ent
;
8395 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8398 if (ent
->addend
== 0)
8400 if (ent
->plt
.refcount
> 0)
8402 ent
->plt
.refcount
-= 1;
8403 expecting_tls_get_addr
= 0;
8409 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8411 struct plt_entry
*ent
;
8412 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8415 if (ent
->addend
== 0)
8417 if (ent
->plt
.refcount
> 0)
8418 ent
->plt
.refcount
-= 1;
8426 if ((tls_set
& TLS_EXPLICIT
) == 0)
8428 struct got_entry
*ent
;
8430 /* Adjust got entry for this reloc. */
8434 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8436 for (; ent
!= NULL
; ent
= ent
->next
)
8437 if (ent
->addend
== rel
->r_addend
8438 && ent
->owner
== ibfd
8439 && ent
->tls_type
== tls_type
)
8446 /* We managed to get rid of a got entry. */
8447 if (ent
->got
.refcount
> 0)
8448 ent
->got
.refcount
-= 1;
8453 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8454 we'll lose one or two dyn relocs. */
8455 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8459 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8461 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8467 *tls_mask
|= tls_set
;
8468 *tls_mask
&= ~tls_clear
;
8471 if (elf_section_data (sec
)->relocs
!= relstart
)
8476 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8478 if (!info
->keep_memory
)
8481 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8485 if (toc_ref
!= NULL
)
8490 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8491 the values of any global symbols in a toc section that has been
8492 edited. Globals in toc sections should be a rarity, so this function
8493 sets a flag if any are found in toc sections other than the one just
8494 edited, so that futher hash table traversals can be avoided. */
8496 struct adjust_toc_info
8499 unsigned long *skip
;
8500 bfd_boolean global_toc_syms
;
8503 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8506 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8508 struct ppc_link_hash_entry
*eh
;
8509 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8512 if (h
->root
.type
!= bfd_link_hash_defined
8513 && h
->root
.type
!= bfd_link_hash_defweak
)
8516 eh
= (struct ppc_link_hash_entry
*) h
;
8517 if (eh
->adjust_done
)
8520 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8522 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8523 i
= toc_inf
->toc
->rawsize
>> 3;
8525 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8527 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8529 (*_bfd_error_handler
)
8530 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8533 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8534 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8537 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8538 eh
->adjust_done
= 1;
8540 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8541 toc_inf
->global_toc_syms
= TRUE
;
8546 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8549 ok_lo_toc_insn (unsigned int insn
)
8551 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8552 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8553 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8554 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8555 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8556 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8557 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8558 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8559 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8560 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8561 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8562 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8563 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8564 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8565 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8567 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8568 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8569 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8572 /* Examine all relocs referencing .toc sections in order to remove
8573 unused .toc entries. */
8576 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8579 struct adjust_toc_info toc_inf
;
8580 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8582 htab
->do_toc_opt
= 1;
8583 toc_inf
.global_toc_syms
= TRUE
;
8584 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8586 asection
*toc
, *sec
;
8587 Elf_Internal_Shdr
*symtab_hdr
;
8588 Elf_Internal_Sym
*local_syms
;
8589 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8590 unsigned long *skip
, *drop
;
8591 unsigned char *used
;
8592 unsigned char *keep
, last
, some_unused
;
8594 if (!is_ppc64_elf (ibfd
))
8597 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8600 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8601 || discarded_section (toc
))
8606 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8608 /* Look at sections dropped from the final link. */
8611 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8613 if (sec
->reloc_count
== 0
8614 || !discarded_section (sec
)
8615 || get_opd_info (sec
)
8616 || (sec
->flags
& SEC_ALLOC
) == 0
8617 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8620 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8621 if (relstart
== NULL
)
8624 /* Run through the relocs to see which toc entries might be
8626 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8628 enum elf_ppc64_reloc_type r_type
;
8629 unsigned long r_symndx
;
8631 struct elf_link_hash_entry
*h
;
8632 Elf_Internal_Sym
*sym
;
8635 r_type
= ELF64_R_TYPE (rel
->r_info
);
8642 case R_PPC64_TOC16_LO
:
8643 case R_PPC64_TOC16_HI
:
8644 case R_PPC64_TOC16_HA
:
8645 case R_PPC64_TOC16_DS
:
8646 case R_PPC64_TOC16_LO_DS
:
8650 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8651 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8659 val
= h
->root
.u
.def
.value
;
8661 val
= sym
->st_value
;
8662 val
+= rel
->r_addend
;
8664 if (val
>= toc
->size
)
8667 /* Anything in the toc ought to be aligned to 8 bytes.
8668 If not, don't mark as unused. */
8674 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8679 skip
[val
>> 3] = ref_from_discarded
;
8682 if (elf_section_data (sec
)->relocs
!= relstart
)
8686 /* For largetoc loads of address constants, we can convert
8687 . addis rx,2,addr@got@ha
8688 . ld ry,addr@got@l(rx)
8690 . addis rx,2,addr@toc@ha
8691 . addi ry,rx,addr@toc@l
8692 when addr is within 2G of the toc pointer. This then means
8693 that the word storing "addr" in the toc is no longer needed. */
8695 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8696 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8697 && toc
->reloc_count
!= 0)
8699 /* Read toc relocs. */
8700 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8702 if (toc_relocs
== NULL
)
8705 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8707 enum elf_ppc64_reloc_type r_type
;
8708 unsigned long r_symndx
;
8710 struct elf_link_hash_entry
*h
;
8711 Elf_Internal_Sym
*sym
;
8714 r_type
= ELF64_R_TYPE (rel
->r_info
);
8715 if (r_type
!= R_PPC64_ADDR64
)
8718 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8719 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8724 || discarded_section (sym_sec
))
8727 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8732 if (h
->type
== STT_GNU_IFUNC
)
8734 val
= h
->root
.u
.def
.value
;
8738 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8740 val
= sym
->st_value
;
8742 val
+= rel
->r_addend
;
8743 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8745 /* We don't yet know the exact toc pointer value, but we
8746 know it will be somewhere in the toc section. Don't
8747 optimize if the difference from any possible toc
8748 pointer is outside [ff..f80008000, 7fff7fff]. */
8749 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8750 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8753 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8754 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8759 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8764 skip
[rel
->r_offset
>> 3]
8765 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8772 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8776 if (local_syms
!= NULL
8777 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8781 && elf_section_data (sec
)->relocs
!= relstart
)
8783 if (toc_relocs
!= NULL
8784 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8791 /* Now check all kept sections that might reference the toc.
8792 Check the toc itself last. */
8793 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8796 sec
= (sec
== toc
? NULL
8797 : sec
->next
== NULL
? toc
8798 : sec
->next
== toc
&& toc
->next
? toc
->next
8803 if (sec
->reloc_count
== 0
8804 || discarded_section (sec
)
8805 || get_opd_info (sec
)
8806 || (sec
->flags
& SEC_ALLOC
) == 0
8807 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8810 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8812 if (relstart
== NULL
)
8818 /* Mark toc entries referenced as used. */
8822 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8824 enum elf_ppc64_reloc_type r_type
;
8825 unsigned long r_symndx
;
8827 struct elf_link_hash_entry
*h
;
8828 Elf_Internal_Sym
*sym
;
8830 enum {no_check
, check_lo
, check_ha
} insn_check
;
8832 r_type
= ELF64_R_TYPE (rel
->r_info
);
8836 insn_check
= no_check
;
8839 case R_PPC64_GOT_TLSLD16_HA
:
8840 case R_PPC64_GOT_TLSGD16_HA
:
8841 case R_PPC64_GOT_TPREL16_HA
:
8842 case R_PPC64_GOT_DTPREL16_HA
:
8843 case R_PPC64_GOT16_HA
:
8844 case R_PPC64_TOC16_HA
:
8845 insn_check
= check_ha
;
8848 case R_PPC64_GOT_TLSLD16_LO
:
8849 case R_PPC64_GOT_TLSGD16_LO
:
8850 case R_PPC64_GOT_TPREL16_LO_DS
:
8851 case R_PPC64_GOT_DTPREL16_LO_DS
:
8852 case R_PPC64_GOT16_LO
:
8853 case R_PPC64_GOT16_LO_DS
:
8854 case R_PPC64_TOC16_LO
:
8855 case R_PPC64_TOC16_LO_DS
:
8856 insn_check
= check_lo
;
8860 if (insn_check
!= no_check
)
8862 bfd_vma off
= rel
->r_offset
& ~3;
8863 unsigned char buf
[4];
8866 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8871 insn
= bfd_get_32 (ibfd
, buf
);
8872 if (insn_check
== check_lo
8873 ? !ok_lo_toc_insn (insn
)
8874 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8875 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8879 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8880 sprintf (str
, "%#08x", insn
);
8881 info
->callbacks
->einfo
8882 (_("%P: %H: toc optimization is not supported for"
8883 " %s instruction.\n"),
8884 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8891 case R_PPC64_TOC16_LO
:
8892 case R_PPC64_TOC16_HI
:
8893 case R_PPC64_TOC16_HA
:
8894 case R_PPC64_TOC16_DS
:
8895 case R_PPC64_TOC16_LO_DS
:
8896 /* In case we're taking addresses of toc entries. */
8897 case R_PPC64_ADDR64
:
8904 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8905 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8916 val
= h
->root
.u
.def
.value
;
8918 val
= sym
->st_value
;
8919 val
+= rel
->r_addend
;
8921 if (val
>= toc
->size
)
8924 if ((skip
[val
>> 3] & can_optimize
) != 0)
8931 case R_PPC64_TOC16_HA
:
8934 case R_PPC64_TOC16_LO_DS
:
8935 off
= rel
->r_offset
;
8936 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
8937 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
8943 if ((opc
& (0x3f << 2)) == (58u << 2))
8948 /* Wrong sort of reloc, or not a ld. We may
8949 as well clear ref_from_discarded too. */
8956 /* For the toc section, we only mark as used if this
8957 entry itself isn't unused. */
8958 else if ((used
[rel
->r_offset
>> 3]
8959 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
8962 /* Do all the relocs again, to catch reference
8971 if (elf_section_data (sec
)->relocs
!= relstart
)
8975 /* Merge the used and skip arrays. Assume that TOC
8976 doublewords not appearing as either used or unused belong
8977 to to an entry more than one doubleword in size. */
8978 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8979 drop
< skip
+ (toc
->size
+ 7) / 8;
8984 *drop
&= ~ref_from_discarded
;
8985 if ((*drop
& can_optimize
) != 0)
8989 else if ((*drop
& ref_from_discarded
) != 0)
8992 last
= ref_from_discarded
;
9002 bfd_byte
*contents
, *src
;
9004 Elf_Internal_Sym
*sym
;
9005 bfd_boolean local_toc_syms
= FALSE
;
9007 /* Shuffle the toc contents, and at the same time convert the
9008 skip array from booleans into offsets. */
9009 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9012 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9014 for (src
= contents
, off
= 0, drop
= skip
;
9015 src
< contents
+ toc
->size
;
9018 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9023 memcpy (src
- off
, src
, 8);
9027 toc
->rawsize
= toc
->size
;
9028 toc
->size
= src
- contents
- off
;
9030 /* Adjust addends for relocs against the toc section sym,
9031 and optimize any accesses we can. */
9032 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9034 if (sec
->reloc_count
== 0
9035 || discarded_section (sec
))
9038 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9040 if (relstart
== NULL
)
9043 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9045 enum elf_ppc64_reloc_type r_type
;
9046 unsigned long r_symndx
;
9048 struct elf_link_hash_entry
*h
;
9051 r_type
= ELF64_R_TYPE (rel
->r_info
);
9058 case R_PPC64_TOC16_LO
:
9059 case R_PPC64_TOC16_HI
:
9060 case R_PPC64_TOC16_HA
:
9061 case R_PPC64_TOC16_DS
:
9062 case R_PPC64_TOC16_LO_DS
:
9063 case R_PPC64_ADDR64
:
9067 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9068 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9076 val
= h
->root
.u
.def
.value
;
9079 val
= sym
->st_value
;
9081 local_toc_syms
= TRUE
;
9084 val
+= rel
->r_addend
;
9086 if (val
> toc
->rawsize
)
9088 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9090 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9092 Elf_Internal_Rela
*tocrel
9093 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9094 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9098 case R_PPC64_TOC16_HA
:
9099 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9102 case R_PPC64_TOC16_LO_DS
:
9103 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9107 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9109 info
->callbacks
->einfo
9110 (_("%P: %H: %s references "
9111 "optimized away TOC entry\n"),
9112 ibfd
, sec
, rel
->r_offset
,
9113 ppc64_elf_howto_table
[r_type
]->name
);
9114 bfd_set_error (bfd_error_bad_value
);
9117 rel
->r_addend
= tocrel
->r_addend
;
9118 elf_section_data (sec
)->relocs
= relstart
;
9122 if (h
!= NULL
|| sym
->st_value
!= 0)
9125 rel
->r_addend
-= skip
[val
>> 3];
9126 elf_section_data (sec
)->relocs
= relstart
;
9129 if (elf_section_data (sec
)->relocs
!= relstart
)
9133 /* We shouldn't have local or global symbols defined in the TOC,
9134 but handle them anyway. */
9135 if (local_syms
!= NULL
)
9136 for (sym
= local_syms
;
9137 sym
< local_syms
+ symtab_hdr
->sh_info
;
9139 if (sym
->st_value
!= 0
9140 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9144 if (sym
->st_value
> toc
->rawsize
)
9145 i
= toc
->rawsize
>> 3;
9147 i
= sym
->st_value
>> 3;
9149 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9152 (*_bfd_error_handler
)
9153 (_("%s defined on removed toc entry"),
9154 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9157 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9158 sym
->st_value
= (bfd_vma
) i
<< 3;
9161 sym
->st_value
-= skip
[i
];
9162 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9165 /* Adjust any global syms defined in this toc input section. */
9166 if (toc_inf
.global_toc_syms
)
9169 toc_inf
.skip
= skip
;
9170 toc_inf
.global_toc_syms
= FALSE
;
9171 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9175 if (toc
->reloc_count
!= 0)
9177 Elf_Internal_Shdr
*rel_hdr
;
9178 Elf_Internal_Rela
*wrel
;
9181 /* Remove unused toc relocs, and adjust those we keep. */
9182 if (toc_relocs
== NULL
)
9183 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9185 if (toc_relocs
== NULL
)
9189 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9190 if ((skip
[rel
->r_offset
>> 3]
9191 & (ref_from_discarded
| can_optimize
)) == 0)
9193 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9194 wrel
->r_info
= rel
->r_info
;
9195 wrel
->r_addend
= rel
->r_addend
;
9198 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9199 &local_syms
, NULL
, NULL
))
9202 elf_section_data (toc
)->relocs
= toc_relocs
;
9203 toc
->reloc_count
= wrel
- toc_relocs
;
9204 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9205 sz
= rel_hdr
->sh_entsize
;
9206 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9209 else if (toc_relocs
!= NULL
9210 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9213 if (local_syms
!= NULL
9214 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9216 if (!info
->keep_memory
)
9219 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9227 /* Return true iff input section I references the TOC using
9228 instructions limited to +/-32k offsets. */
9231 ppc64_elf_has_small_toc_reloc (asection
*i
)
9233 return (is_ppc64_elf (i
->owner
)
9234 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9237 /* Allocate space for one GOT entry. */
9240 allocate_got (struct elf_link_hash_entry
*h
,
9241 struct bfd_link_info
*info
,
9242 struct got_entry
*gent
)
9244 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9246 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9247 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9249 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9250 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9251 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9253 gent
->got
.offset
= got
->size
;
9254 got
->size
+= entsize
;
9256 dyn
= htab
->elf
.dynamic_sections_created
;
9257 if (h
->type
== STT_GNU_IFUNC
)
9259 htab
->elf
.irelplt
->size
+= rentsize
;
9260 htab
->got_reli_size
+= rentsize
;
9262 else if ((info
->shared
9263 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9264 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9265 || h
->root
.type
!= bfd_link_hash_undefweak
))
9267 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9268 relgot
->size
+= rentsize
;
9272 /* This function merges got entries in the same toc group. */
9275 merge_got_entries (struct got_entry
**pent
)
9277 struct got_entry
*ent
, *ent2
;
9279 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9280 if (!ent
->is_indirect
)
9281 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9282 if (!ent2
->is_indirect
9283 && ent2
->addend
== ent
->addend
9284 && ent2
->tls_type
== ent
->tls_type
9285 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9287 ent2
->is_indirect
= TRUE
;
9288 ent2
->got
.ent
= ent
;
9292 /* Allocate space in .plt, .got and associated reloc sections for
9296 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9298 struct bfd_link_info
*info
;
9299 struct ppc_link_hash_table
*htab
;
9301 struct ppc_link_hash_entry
*eh
;
9302 struct elf_dyn_relocs
*p
;
9303 struct got_entry
**pgent
, *gent
;
9305 if (h
->root
.type
== bfd_link_hash_indirect
)
9308 info
= (struct bfd_link_info
*) inf
;
9309 htab
= ppc_hash_table (info
);
9313 if ((htab
->elf
.dynamic_sections_created
9315 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
9316 || h
->type
== STT_GNU_IFUNC
)
9318 struct plt_entry
*pent
;
9319 bfd_boolean doneone
= FALSE
;
9320 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9321 if (pent
->plt
.refcount
> 0)
9323 if (!htab
->elf
.dynamic_sections_created
9324 || h
->dynindx
== -1)
9327 pent
->plt
.offset
= s
->size
;
9328 s
->size
+= PLT_ENTRY_SIZE (htab
);
9329 s
= htab
->elf
.irelplt
;
9333 /* If this is the first .plt entry, make room for the special
9337 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9339 pent
->plt
.offset
= s
->size
;
9341 /* Make room for this entry. */
9342 s
->size
+= PLT_ENTRY_SIZE (htab
);
9344 /* Make room for the .glink code. */
9347 s
->size
+= GLINK_CALL_STUB_SIZE
;
9350 /* We need bigger stubs past index 32767. */
9351 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9358 /* We also need to make an entry in the .rela.plt section. */
9359 s
= htab
->elf
.srelplt
;
9361 s
->size
+= sizeof (Elf64_External_Rela
);
9365 pent
->plt
.offset
= (bfd_vma
) -1;
9368 h
->plt
.plist
= NULL
;
9374 h
->plt
.plist
= NULL
;
9378 eh
= (struct ppc_link_hash_entry
*) h
;
9379 /* Run through the TLS GD got entries first if we're changing them
9381 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9382 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9383 if (gent
->got
.refcount
> 0
9384 && (gent
->tls_type
& TLS_GD
) != 0)
9386 /* This was a GD entry that has been converted to TPREL. If
9387 there happens to be a TPREL entry we can use that one. */
9388 struct got_entry
*ent
;
9389 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9390 if (ent
->got
.refcount
> 0
9391 && (ent
->tls_type
& TLS_TPREL
) != 0
9392 && ent
->addend
== gent
->addend
9393 && ent
->owner
== gent
->owner
)
9395 gent
->got
.refcount
= 0;
9399 /* If not, then we'll be using our own TPREL entry. */
9400 if (gent
->got
.refcount
!= 0)
9401 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9404 /* Remove any list entry that won't generate a word in the GOT before
9405 we call merge_got_entries. Otherwise we risk merging to empty
9407 pgent
= &h
->got
.glist
;
9408 while ((gent
= *pgent
) != NULL
)
9409 if (gent
->got
.refcount
> 0)
9411 if ((gent
->tls_type
& TLS_LD
) != 0
9414 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9415 *pgent
= gent
->next
;
9418 pgent
= &gent
->next
;
9421 *pgent
= gent
->next
;
9423 if (!htab
->do_multi_toc
)
9424 merge_got_entries (&h
->got
.glist
);
9426 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9427 if (!gent
->is_indirect
)
9429 /* Make sure this symbol is output as a dynamic symbol.
9430 Undefined weak syms won't yet be marked as dynamic,
9431 nor will all TLS symbols. */
9432 if (h
->dynindx
== -1
9434 && h
->type
!= STT_GNU_IFUNC
9435 && htab
->elf
.dynamic_sections_created
)
9437 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9441 if (!is_ppc64_elf (gent
->owner
))
9444 allocate_got (h
, info
, gent
);
9447 if (eh
->dyn_relocs
== NULL
9448 || (!htab
->elf
.dynamic_sections_created
9449 && h
->type
!= STT_GNU_IFUNC
))
9452 /* In the shared -Bsymbolic case, discard space allocated for
9453 dynamic pc-relative relocs against symbols which turn out to be
9454 defined in regular objects. For the normal shared case, discard
9455 space for relocs that have become local due to symbol visibility
9460 /* Relocs that use pc_count are those that appear on a call insn,
9461 or certain REL relocs (see must_be_dyn_reloc) that can be
9462 generated via assembly. We want calls to protected symbols to
9463 resolve directly to the function rather than going via the plt.
9464 If people want function pointer comparisons to work as expected
9465 then they should avoid writing weird assembly. */
9466 if (SYMBOL_CALLS_LOCAL (info
, h
))
9468 struct elf_dyn_relocs
**pp
;
9470 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9472 p
->count
-= p
->pc_count
;
9481 /* Also discard relocs on undefined weak syms with non-default
9483 if (eh
->dyn_relocs
!= NULL
9484 && h
->root
.type
== bfd_link_hash_undefweak
)
9486 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9487 eh
->dyn_relocs
= NULL
;
9489 /* Make sure this symbol is output as a dynamic symbol.
9490 Undefined weak syms won't yet be marked as dynamic. */
9491 else if (h
->dynindx
== -1
9492 && !h
->forced_local
)
9494 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9499 else if (h
->type
== STT_GNU_IFUNC
)
9501 if (!h
->non_got_ref
)
9502 eh
->dyn_relocs
= NULL
;
9504 else if (ELIMINATE_COPY_RELOCS
)
9506 /* For the non-shared case, discard space for relocs against
9507 symbols which turn out to need copy relocs or are not
9513 /* Make sure this symbol is output as a dynamic symbol.
9514 Undefined weak syms won't yet be marked as dynamic. */
9515 if (h
->dynindx
== -1
9516 && !h
->forced_local
)
9518 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9522 /* If that succeeded, we know we'll be keeping all the
9524 if (h
->dynindx
!= -1)
9528 eh
->dyn_relocs
= NULL
;
9533 /* Finally, allocate space. */
9534 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9536 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9537 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9538 sreloc
= htab
->elf
.irelplt
;
9539 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9545 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9546 to set up space for global entry stubs. These are put in glink,
9547 after the branch table. */
9550 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9552 struct bfd_link_info
*info
;
9553 struct ppc_link_hash_table
*htab
;
9554 struct plt_entry
*pent
;
9557 if (h
->root
.type
== bfd_link_hash_indirect
)
9560 if (!h
->pointer_equality_needed
)
9567 htab
= ppc_hash_table (info
);
9572 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9573 if (pent
->plt
.offset
!= (bfd_vma
) -1
9574 && pent
->addend
== 0)
9576 /* For ELFv2, if this symbol is not defined in a regular file
9577 and we are not generating a shared library or pie, then we
9578 need to define the symbol in the executable on a call stub.
9579 This is to avoid text relocations. */
9580 s
->size
= (s
->size
+ 15) & -16;
9581 h
->root
.u
.def
.section
= s
;
9582 h
->root
.u
.def
.value
= s
->size
;
9589 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9590 read-only sections. */
9593 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9595 if (h
->root
.type
== bfd_link_hash_indirect
)
9598 if (readonly_dynrelocs (h
))
9600 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9602 /* Not an error, just cut short the traversal. */
9608 /* Set the sizes of the dynamic sections. */
9611 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9612 struct bfd_link_info
*info
)
9614 struct ppc_link_hash_table
*htab
;
9619 struct got_entry
*first_tlsld
;
9621 htab
= ppc_hash_table (info
);
9625 dynobj
= htab
->elf
.dynobj
;
9629 if (htab
->elf
.dynamic_sections_created
)
9631 /* Set the contents of the .interp section to the interpreter. */
9632 if (info
->executable
)
9634 s
= bfd_get_linker_section (dynobj
, ".interp");
9637 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9638 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9642 /* Set up .got offsets for local syms, and space for local dynamic
9644 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9646 struct got_entry
**lgot_ents
;
9647 struct got_entry
**end_lgot_ents
;
9648 struct plt_entry
**local_plt
;
9649 struct plt_entry
**end_local_plt
;
9650 unsigned char *lgot_masks
;
9651 bfd_size_type locsymcount
;
9652 Elf_Internal_Shdr
*symtab_hdr
;
9654 if (!is_ppc64_elf (ibfd
))
9657 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9659 struct ppc_dyn_relocs
*p
;
9661 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9663 if (!bfd_is_abs_section (p
->sec
)
9664 && bfd_is_abs_section (p
->sec
->output_section
))
9666 /* Input section has been discarded, either because
9667 it is a copy of a linkonce section or due to
9668 linker script /DISCARD/, so we'll be discarding
9671 else if (p
->count
!= 0)
9673 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9675 srel
= htab
->elf
.irelplt
;
9676 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9677 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9678 info
->flags
|= DF_TEXTREL
;
9683 lgot_ents
= elf_local_got_ents (ibfd
);
9687 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9688 locsymcount
= symtab_hdr
->sh_info
;
9689 end_lgot_ents
= lgot_ents
+ locsymcount
;
9690 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9691 end_local_plt
= local_plt
+ locsymcount
;
9692 lgot_masks
= (unsigned char *) end_local_plt
;
9693 s
= ppc64_elf_tdata (ibfd
)->got
;
9694 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9696 struct got_entry
**pent
, *ent
;
9699 while ((ent
= *pent
) != NULL
)
9700 if (ent
->got
.refcount
> 0)
9702 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9704 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9709 unsigned int ent_size
= 8;
9710 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9712 ent
->got
.offset
= s
->size
;
9713 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9718 s
->size
+= ent_size
;
9719 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9721 htab
->elf
.irelplt
->size
+= rel_size
;
9722 htab
->got_reli_size
+= rel_size
;
9724 else if (info
->shared
)
9726 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9727 srel
->size
+= rel_size
;
9736 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9737 for (; local_plt
< end_local_plt
; ++local_plt
)
9739 struct plt_entry
*ent
;
9741 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9742 if (ent
->plt
.refcount
> 0)
9745 ent
->plt
.offset
= s
->size
;
9746 s
->size
+= PLT_ENTRY_SIZE (htab
);
9748 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
9751 ent
->plt
.offset
= (bfd_vma
) -1;
9755 /* Allocate global sym .plt and .got entries, and space for global
9756 sym dynamic relocs. */
9757 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9758 /* Stash the end of glink branch table. */
9759 if (htab
->glink
!= NULL
)
9760 htab
->glink
->rawsize
= htab
->glink
->size
;
9762 if (!htab
->opd_abi
&& !info
->shared
)
9763 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
9766 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9768 struct got_entry
*ent
;
9770 if (!is_ppc64_elf (ibfd
))
9773 ent
= ppc64_tlsld_got (ibfd
);
9774 if (ent
->got
.refcount
> 0)
9776 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9778 ent
->is_indirect
= TRUE
;
9779 ent
->got
.ent
= first_tlsld
;
9783 if (first_tlsld
== NULL
)
9785 s
= ppc64_elf_tdata (ibfd
)->got
;
9786 ent
->got
.offset
= s
->size
;
9791 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9792 srel
->size
+= sizeof (Elf64_External_Rela
);
9797 ent
->got
.offset
= (bfd_vma
) -1;
9800 /* We now have determined the sizes of the various dynamic sections.
9801 Allocate memory for them. */
9803 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9805 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9808 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9809 /* These haven't been allocated yet; don't strip. */
9811 else if (s
== htab
->elf
.sgot
9812 || s
== htab
->elf
.splt
9813 || s
== htab
->elf
.iplt
9815 || s
== htab
->dynbss
)
9817 /* Strip this section if we don't need it; see the
9820 else if (s
== htab
->glink_eh_frame
)
9822 if (!bfd_is_abs_section (s
->output_section
))
9823 /* Not sized yet. */
9826 else if (CONST_STRNEQ (s
->name
, ".rela"))
9830 if (s
!= htab
->elf
.srelplt
)
9833 /* We use the reloc_count field as a counter if we need
9834 to copy relocs into the output file. */
9840 /* It's not one of our sections, so don't allocate space. */
9846 /* If we don't need this section, strip it from the
9847 output file. This is mostly to handle .rela.bss and
9848 .rela.plt. We must create both sections in
9849 create_dynamic_sections, because they must be created
9850 before the linker maps input sections to output
9851 sections. The linker does that before
9852 adjust_dynamic_symbol is called, and it is that
9853 function which decides whether anything needs to go
9854 into these sections. */
9855 s
->flags
|= SEC_EXCLUDE
;
9859 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9862 /* Allocate memory for the section contents. We use bfd_zalloc
9863 here in case unused entries are not reclaimed before the
9864 section's contents are written out. This should not happen,
9865 but this way if it does we get a R_PPC64_NONE reloc in .rela
9866 sections instead of garbage.
9867 We also rely on the section contents being zero when writing
9869 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9870 if (s
->contents
== NULL
)
9874 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9876 if (!is_ppc64_elf (ibfd
))
9879 s
= ppc64_elf_tdata (ibfd
)->got
;
9880 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
9883 s
->flags
|= SEC_EXCLUDE
;
9886 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9887 if (s
->contents
== NULL
)
9891 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9895 s
->flags
|= SEC_EXCLUDE
;
9898 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9899 if (s
->contents
== NULL
)
9907 if (htab
->elf
.dynamic_sections_created
)
9909 bfd_boolean tls_opt
;
9911 /* Add some entries to the .dynamic section. We fill in the
9912 values later, in ppc64_elf_finish_dynamic_sections, but we
9913 must add the entries now so that we get the correct size for
9914 the .dynamic section. The DT_DEBUG entry is filled in by the
9915 dynamic linker and used by the debugger. */
9916 #define add_dynamic_entry(TAG, VAL) \
9917 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9919 if (info
->executable
)
9921 if (!add_dynamic_entry (DT_DEBUG
, 0))
9925 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
9927 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9928 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9929 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9930 || !add_dynamic_entry (DT_JMPREL
, 0)
9931 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9935 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
9937 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9938 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9942 tls_opt
= (!htab
->params
->no_tls_get_addr_opt
9943 && htab
->tls_get_addr_fd
!= NULL
9944 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
9945 if (tls_opt
|| !htab
->opd_abi
)
9947 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
9953 if (!add_dynamic_entry (DT_RELA
, 0)
9954 || !add_dynamic_entry (DT_RELASZ
, 0)
9955 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9958 /* If any dynamic relocs apply to a read-only section,
9959 then we need a DT_TEXTREL entry. */
9960 if ((info
->flags
& DF_TEXTREL
) == 0)
9961 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
9963 if ((info
->flags
& DF_TEXTREL
) != 0)
9965 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9970 #undef add_dynamic_entry
9975 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9978 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
9980 if (h
->plt
.plist
!= NULL
9982 && !h
->pointer_equality_needed
)
9985 return _bfd_elf_hash_symbol (h
);
9988 /* Determine the type of stub needed, if any, for a call. */
9990 static inline enum ppc_stub_type
9991 ppc_type_of_stub (asection
*input_sec
,
9992 const Elf_Internal_Rela
*rel
,
9993 struct ppc_link_hash_entry
**hash
,
9994 struct plt_entry
**plt_ent
,
9995 bfd_vma destination
,
9996 unsigned long local_off
)
9998 struct ppc_link_hash_entry
*h
= *hash
;
10000 bfd_vma branch_offset
;
10001 bfd_vma max_branch_offset
;
10002 enum elf_ppc64_reloc_type r_type
;
10006 struct plt_entry
*ent
;
10007 struct ppc_link_hash_entry
*fdh
= h
;
10009 && h
->oh
->is_func_descriptor
)
10011 fdh
= ppc_follow_link (h
->oh
);
10015 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10016 if (ent
->addend
== rel
->r_addend
10017 && ent
->plt
.offset
!= (bfd_vma
) -1)
10020 return ppc_stub_plt_call
;
10023 /* Here, we know we don't have a plt entry. If we don't have a
10024 either a defined function descriptor or a defined entry symbol
10025 in a regular object file, then it is pointless trying to make
10026 any other type of stub. */
10027 if (!is_static_defined (&fdh
->elf
)
10028 && !is_static_defined (&h
->elf
))
10029 return ppc_stub_none
;
10031 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10033 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10034 struct plt_entry
**local_plt
= (struct plt_entry
**)
10035 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10036 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10038 if (local_plt
[r_symndx
] != NULL
)
10040 struct plt_entry
*ent
;
10042 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10043 if (ent
->addend
== rel
->r_addend
10044 && ent
->plt
.offset
!= (bfd_vma
) -1)
10047 return ppc_stub_plt_call
;
10052 /* Determine where the call point is. */
10053 location
= (input_sec
->output_offset
10054 + input_sec
->output_section
->vma
10057 branch_offset
= destination
- location
;
10058 r_type
= ELF64_R_TYPE (rel
->r_info
);
10060 /* Determine if a long branch stub is needed. */
10061 max_branch_offset
= 1 << 25;
10062 if (r_type
!= R_PPC64_REL24
)
10063 max_branch_offset
= 1 << 15;
10065 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10066 /* We need a stub. Figure out whether a long_branch or plt_branch
10067 is needed later. */
10068 return ppc_stub_long_branch
;
10070 return ppc_stub_none
;
10073 /* With power7 weakly ordered memory model, it is possible for ld.so
10074 to update a plt entry in one thread and have another thread see a
10075 stale zero toc entry. To avoid this we need some sort of acquire
10076 barrier in the call stub. One solution is to make the load of the
10077 toc word seem to appear to depend on the load of the function entry
10078 word. Another solution is to test for r2 being zero, and branch to
10079 the appropriate glink entry if so.
10081 . fake dep barrier compare
10082 . ld 12,xxx(2) ld 12,xxx(2)
10083 . mtctr 12 mtctr 12
10084 . xor 11,12,12 ld 2,xxx+8(2)
10085 . add 2,2,11 cmpldi 2,0
10086 . ld 2,xxx+8(2) bnectr+
10087 . bctr b <glink_entry>
10089 The solution involving the compare turns out to be faster, so
10090 that's what we use unless the branch won't reach. */
10092 #define ALWAYS_USE_FAKE_DEP 0
10093 #define ALWAYS_EMIT_R2SAVE 0
10095 #define PPC_LO(v) ((v) & 0xffff)
10096 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10097 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10099 static inline unsigned int
10100 plt_stub_size (struct ppc_link_hash_table
*htab
,
10101 struct ppc_stub_hash_entry
*stub_entry
,
10104 unsigned size
= 12;
10106 if (ALWAYS_EMIT_R2SAVE
10107 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10109 if (PPC_HA (off
) != 0)
10114 if (htab
->params
->plt_static_chain
)
10116 if (htab
->params
->plt_thread_safe
)
10118 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10121 if (stub_entry
->h
!= NULL
10122 && (stub_entry
->h
== htab
->tls_get_addr_fd
10123 || stub_entry
->h
== htab
->tls_get_addr
)
10124 && !htab
->params
->no_tls_get_addr_opt
)
10129 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10130 then return the padding needed to do so. */
10131 static inline unsigned int
10132 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10133 struct ppc_stub_hash_entry
*stub_entry
,
10136 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10137 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10138 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
10140 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10141 > (stub_size
& -stub_align
))
10142 return stub_align
- (stub_off
& (stub_align
- 1));
10146 /* Build a .plt call stub. */
10148 static inline bfd_byte
*
10149 build_plt_stub (struct ppc_link_hash_table
*htab
,
10150 struct ppc_stub_hash_entry
*stub_entry
,
10151 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10153 bfd
*obfd
= htab
->params
->stub_bfd
;
10154 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10155 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10156 bfd_boolean plt_thread_safe
= htab
->params
->plt_thread_safe
;
10157 bfd_boolean use_fake_dep
= plt_thread_safe
;
10158 bfd_vma cmp_branch_off
= 0;
10160 if (!ALWAYS_USE_FAKE_DEP
10163 && !(stub_entry
->h
!= NULL
10164 && (stub_entry
->h
== htab
->tls_get_addr_fd
10165 || stub_entry
->h
== htab
->tls_get_addr
)
10166 && !htab
->params
->no_tls_get_addr_opt
))
10168 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10169 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10170 / PLT_ENTRY_SIZE (htab
));
10171 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10174 if (pltindex
> 32768)
10175 glinkoff
+= (pltindex
- 32768) * 4;
10177 + htab
->glink
->output_offset
10178 + htab
->glink
->output_section
->vma
);
10179 from
= (p
- stub_entry
->stub_sec
->contents
10180 + 4 * (ALWAYS_EMIT_R2SAVE
10181 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10182 + 4 * (PPC_HA (offset
) != 0)
10183 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10184 != PPC_HA (offset
))
10185 + 4 * (plt_static_chain
!= 0)
10187 + stub_entry
->stub_sec
->output_offset
10188 + stub_entry
->stub_sec
->output_section
->vma
);
10189 cmp_branch_off
= to
- from
;
10190 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10193 if (PPC_HA (offset
) != 0)
10197 if (ALWAYS_EMIT_R2SAVE
10198 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10199 r
[0].r_offset
+= 4;
10200 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10201 r
[1].r_offset
= r
[0].r_offset
+ 4;
10202 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10203 r
[1].r_addend
= r
[0].r_addend
;
10206 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10208 r
[2].r_offset
= r
[1].r_offset
+ 4;
10209 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10210 r
[2].r_addend
= r
[0].r_addend
;
10214 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10215 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10216 r
[2].r_addend
= r
[0].r_addend
+ 8;
10217 if (plt_static_chain
)
10219 r
[3].r_offset
= r
[2].r_offset
+ 4;
10220 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10221 r
[3].r_addend
= r
[0].r_addend
+ 16;
10226 if (ALWAYS_EMIT_R2SAVE
10227 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10228 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10229 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10230 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10232 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10234 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10237 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10242 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10243 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10245 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10246 if (plt_static_chain
)
10247 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10254 if (ALWAYS_EMIT_R2SAVE
10255 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10256 r
[0].r_offset
+= 4;
10257 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10260 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10262 r
[1].r_offset
= r
[0].r_offset
+ 4;
10263 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10264 r
[1].r_addend
= r
[0].r_addend
;
10268 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10269 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10270 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10271 if (plt_static_chain
)
10273 r
[2].r_offset
= r
[1].r_offset
+ 4;
10274 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10275 r
[2].r_addend
= r
[0].r_addend
+ 8;
10280 if (ALWAYS_EMIT_R2SAVE
10281 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10282 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10283 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10285 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10287 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10290 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10295 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10296 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10298 if (plt_static_chain
)
10299 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10300 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10303 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10305 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10306 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10307 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10310 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10314 /* Build a special .plt call stub for __tls_get_addr. */
10316 #define LD_R11_0R3 0xe9630000
10317 #define LD_R12_0R3 0xe9830000
10318 #define MR_R0_R3 0x7c601b78
10319 #define CMPDI_R11_0 0x2c2b0000
10320 #define ADD_R3_R12_R13 0x7c6c6a14
10321 #define BEQLR 0x4d820020
10322 #define MR_R3_R0 0x7c030378
10323 #define STD_R11_0R1 0xf9610000
10324 #define BCTRL 0x4e800421
10325 #define LD_R11_0R1 0xe9610000
10326 #define MTLR_R11 0x7d6803a6
10328 static inline bfd_byte
*
10329 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10330 struct ppc_stub_hash_entry
*stub_entry
,
10331 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10333 bfd
*obfd
= htab
->params
->stub_bfd
;
10335 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10336 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10337 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10338 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10339 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10340 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10341 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10342 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10343 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10346 r
[0].r_offset
+= 9 * 4;
10347 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10348 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10350 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10351 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10352 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10353 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10358 static Elf_Internal_Rela
*
10359 get_relocs (asection
*sec
, int count
)
10361 Elf_Internal_Rela
*relocs
;
10362 struct bfd_elf_section_data
*elfsec_data
;
10364 elfsec_data
= elf_section_data (sec
);
10365 relocs
= elfsec_data
->relocs
;
10366 if (relocs
== NULL
)
10368 bfd_size_type relsize
;
10369 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10370 relocs
= bfd_alloc (sec
->owner
, relsize
);
10371 if (relocs
== NULL
)
10373 elfsec_data
->relocs
= relocs
;
10374 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10375 sizeof (Elf_Internal_Shdr
));
10376 if (elfsec_data
->rela
.hdr
== NULL
)
10378 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10379 * sizeof (Elf64_External_Rela
));
10380 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10381 sec
->reloc_count
= 0;
10383 relocs
+= sec
->reloc_count
;
10384 sec
->reloc_count
+= count
;
10389 get_r2off (struct bfd_link_info
*info
,
10390 struct ppc_stub_hash_entry
*stub_entry
)
10392 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10393 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
10397 /* Support linking -R objects. Get the toc pointer from the
10400 if (!htab
->opd_abi
)
10402 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10403 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10405 if (strcmp (opd
->name
, ".opd") != 0
10406 || opd
->reloc_count
!= 0)
10408 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10409 stub_entry
->h
->elf
.root
.root
.string
);
10410 bfd_set_error (bfd_error_bad_value
);
10413 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10415 r2off
= bfd_get_64 (opd
->owner
, buf
);
10416 r2off
-= elf_gp (info
->output_bfd
);
10418 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
10423 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10425 struct ppc_stub_hash_entry
*stub_entry
;
10426 struct ppc_branch_hash_entry
*br_entry
;
10427 struct bfd_link_info
*info
;
10428 struct ppc_link_hash_table
*htab
;
10433 Elf_Internal_Rela
*r
;
10436 /* Massage our args to the form they really have. */
10437 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10440 htab
= ppc_hash_table (info
);
10444 /* Make a note of the offset within the stubs for this entry. */
10445 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10446 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10448 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10449 switch (stub_entry
->stub_type
)
10451 case ppc_stub_long_branch
:
10452 case ppc_stub_long_branch_r2off
:
10453 /* Branches are relative. This is where we are going to. */
10454 dest
= (stub_entry
->target_value
10455 + stub_entry
->target_section
->output_offset
10456 + stub_entry
->target_section
->output_section
->vma
);
10457 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10460 /* And this is where we are coming from. */
10461 off
-= (stub_entry
->stub_offset
10462 + stub_entry
->stub_sec
->output_offset
10463 + stub_entry
->stub_sec
->output_section
->vma
);
10466 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10468 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10472 htab
->stub_error
= TRUE
;
10475 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10478 if (PPC_HA (r2off
) != 0)
10481 bfd_put_32 (htab
->params
->stub_bfd
,
10482 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10485 bfd_put_32 (htab
->params
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10489 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10491 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10493 info
->callbacks
->einfo
10494 (_("%P: long branch stub `%s' offset overflow\n"),
10495 stub_entry
->root
.string
);
10496 htab
->stub_error
= TRUE
;
10500 if (info
->emitrelocations
)
10502 r
= get_relocs (stub_entry
->stub_sec
, 1);
10505 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10506 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10507 r
->r_addend
= dest
;
10508 if (stub_entry
->h
!= NULL
)
10510 struct elf_link_hash_entry
**hashes
;
10511 unsigned long symndx
;
10512 struct ppc_link_hash_entry
*h
;
10514 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10515 if (hashes
== NULL
)
10517 bfd_size_type hsize
;
10519 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10520 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10521 if (hashes
== NULL
)
10523 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10524 htab
->stub_globals
= 1;
10526 symndx
= htab
->stub_globals
++;
10528 hashes
[symndx
] = &h
->elf
;
10529 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10530 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10531 h
= ppc_follow_link (h
->oh
);
10532 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10533 /* H is an opd symbol. The addend must be zero. */
10537 off
= (h
->elf
.root
.u
.def
.value
10538 + h
->elf
.root
.u
.def
.section
->output_offset
10539 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10540 r
->r_addend
-= off
;
10546 case ppc_stub_plt_branch
:
10547 case ppc_stub_plt_branch_r2off
:
10548 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10549 stub_entry
->root
.string
+ 9,
10551 if (br_entry
== NULL
)
10553 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10554 stub_entry
->root
.string
);
10555 htab
->stub_error
= TRUE
;
10559 dest
= (stub_entry
->target_value
10560 + stub_entry
->target_section
->output_offset
10561 + stub_entry
->target_section
->output_section
->vma
);
10562 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10563 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10565 bfd_put_64 (htab
->brlt
->owner
, dest
,
10566 htab
->brlt
->contents
+ br_entry
->offset
);
10568 if (br_entry
->iter
== htab
->stub_iteration
)
10570 br_entry
->iter
= 0;
10572 if (htab
->relbrlt
!= NULL
)
10574 /* Create a reloc for the branch lookup table entry. */
10575 Elf_Internal_Rela rela
;
10578 rela
.r_offset
= (br_entry
->offset
10579 + htab
->brlt
->output_offset
10580 + htab
->brlt
->output_section
->vma
);
10581 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10582 rela
.r_addend
= dest
;
10584 rl
= htab
->relbrlt
->contents
;
10585 rl
+= (htab
->relbrlt
->reloc_count
++
10586 * sizeof (Elf64_External_Rela
));
10587 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10589 else if (info
->emitrelocations
)
10591 r
= get_relocs (htab
->brlt
, 1);
10594 /* brlt, being SEC_LINKER_CREATED does not go through the
10595 normal reloc processing. Symbols and offsets are not
10596 translated from input file to output file form, so
10597 set up the offset per the output file. */
10598 r
->r_offset
= (br_entry
->offset
10599 + htab
->brlt
->output_offset
10600 + htab
->brlt
->output_section
->vma
);
10601 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10602 r
->r_addend
= dest
;
10606 dest
= (br_entry
->offset
10607 + htab
->brlt
->output_offset
10608 + htab
->brlt
->output_section
->vma
);
10611 - elf_gp (htab
->brlt
->output_section
->owner
)
10612 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10614 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10616 info
->callbacks
->einfo
10617 (_("%P: linkage table error against `%T'\n"),
10618 stub_entry
->root
.string
);
10619 bfd_set_error (bfd_error_bad_value
);
10620 htab
->stub_error
= TRUE
;
10624 if (info
->emitrelocations
)
10626 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10629 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10630 if (bfd_big_endian (info
->output_bfd
))
10631 r
[0].r_offset
+= 2;
10632 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10633 r
[0].r_offset
+= 4;
10634 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10635 r
[0].r_addend
= dest
;
10636 if (PPC_HA (off
) != 0)
10638 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10639 r
[1].r_offset
= r
[0].r_offset
+ 4;
10640 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10641 r
[1].r_addend
= r
[0].r_addend
;
10645 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10647 if (PPC_HA (off
) != 0)
10650 bfd_put_32 (htab
->params
->stub_bfd
,
10651 ADDIS_R11_R2
| PPC_HA (off
), loc
);
10653 bfd_put_32 (htab
->params
->stub_bfd
,
10654 LD_R12_0R11
| PPC_LO (off
), loc
);
10659 bfd_put_32 (htab
->params
->stub_bfd
,
10660 LD_R12_0R2
| PPC_LO (off
), loc
);
10665 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10667 if (r2off
== 0 && htab
->opd_abi
)
10669 htab
->stub_error
= TRUE
;
10673 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10676 if (PPC_HA (off
) != 0)
10679 bfd_put_32 (htab
->params
->stub_bfd
,
10680 ADDIS_R11_R2
| PPC_HA (off
), loc
);
10682 bfd_put_32 (htab
->params
->stub_bfd
,
10683 LD_R12_0R11
| PPC_LO (off
), loc
);
10686 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10688 if (PPC_HA (r2off
) != 0)
10692 bfd_put_32 (htab
->params
->stub_bfd
,
10693 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10695 if (PPC_LO (r2off
) != 0)
10699 bfd_put_32 (htab
->params
->stub_bfd
,
10700 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10704 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10706 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10709 case ppc_stub_plt_call
:
10710 case ppc_stub_plt_call_r2save
:
10711 if (stub_entry
->h
!= NULL
10712 && stub_entry
->h
->is_func_descriptor
10713 && stub_entry
->h
->oh
!= NULL
)
10715 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10717 /* If the old-ABI "dot-symbol" is undefined make it weak so
10718 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10719 FIXME: We used to define the symbol on one of the call
10720 stubs instead, which is why we test symbol section id
10721 against htab->top_id in various places. Likely all
10722 these checks could now disappear. */
10723 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10724 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10725 /* Stop undo_symbol_twiddle changing it back to undefined. */
10726 fh
->was_undefined
= 0;
10729 /* Now build the stub. */
10730 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10731 if (dest
>= (bfd_vma
) -2)
10734 plt
= htab
->elf
.splt
;
10735 if (!htab
->elf
.dynamic_sections_created
10736 || stub_entry
->h
== NULL
10737 || stub_entry
->h
->elf
.dynindx
== -1)
10738 plt
= htab
->elf
.iplt
;
10740 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10742 if (stub_entry
->h
== NULL
10743 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10745 Elf_Internal_Rela rela
;
10748 rela
.r_offset
= dest
;
10750 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10752 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
10753 rela
.r_addend
= (stub_entry
->target_value
10754 + stub_entry
->target_section
->output_offset
10755 + stub_entry
->target_section
->output_section
->vma
);
10757 rl
= (htab
->elf
.irelplt
->contents
10758 + (htab
->elf
.irelplt
->reloc_count
++
10759 * sizeof (Elf64_External_Rela
)));
10760 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10761 stub_entry
->plt_ent
->plt
.offset
|= 1;
10765 - elf_gp (plt
->output_section
->owner
)
10766 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10768 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10770 info
->callbacks
->einfo
10771 (_("%P: linkage table error against `%T'\n"),
10772 stub_entry
->h
!= NULL
10773 ? stub_entry
->h
->elf
.root
.root
.string
10775 bfd_set_error (bfd_error_bad_value
);
10776 htab
->stub_error
= TRUE
;
10780 if (htab
->params
->plt_stub_align
!= 0)
10782 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10784 stub_entry
->stub_sec
->size
+= pad
;
10785 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10790 if (info
->emitrelocations
)
10792 r
= get_relocs (stub_entry
->stub_sec
,
10793 ((PPC_HA (off
) != 0)
10795 ? 2 + (htab
->params
->plt_static_chain
10796 && PPC_HA (off
+ 16) == PPC_HA (off
))
10800 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10801 if (bfd_big_endian (info
->output_bfd
))
10802 r
[0].r_offset
+= 2;
10803 r
[0].r_addend
= dest
;
10805 if (stub_entry
->h
!= NULL
10806 && (stub_entry
->h
== htab
->tls_get_addr_fd
10807 || stub_entry
->h
== htab
->tls_get_addr
)
10808 && !htab
->params
->no_tls_get_addr_opt
)
10809 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10811 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10820 stub_entry
->stub_sec
->size
+= size
;
10822 if (htab
->params
->emit_stub_syms
)
10824 struct elf_link_hash_entry
*h
;
10827 const char *const stub_str
[] = { "long_branch",
10828 "long_branch_r2off",
10830 "plt_branch_r2off",
10834 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10835 len2
= strlen (stub_entry
->root
.string
);
10836 name
= bfd_malloc (len1
+ len2
+ 2);
10839 memcpy (name
, stub_entry
->root
.string
, 9);
10840 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10841 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10842 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10845 if (h
->root
.type
== bfd_link_hash_new
)
10847 h
->root
.type
= bfd_link_hash_defined
;
10848 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10849 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10850 h
->ref_regular
= 1;
10851 h
->def_regular
= 1;
10852 h
->ref_regular_nonweak
= 1;
10853 h
->forced_local
= 1;
10861 /* As above, but don't actually build the stub. Just bump offset so
10862 we know stub section sizes, and select plt_branch stubs where
10863 long_branch stubs won't do. */
10866 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10868 struct ppc_stub_hash_entry
*stub_entry
;
10869 struct bfd_link_info
*info
;
10870 struct ppc_link_hash_table
*htab
;
10874 /* Massage our args to the form they really have. */
10875 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10878 htab
= ppc_hash_table (info
);
10882 if (stub_entry
->stub_type
== ppc_stub_plt_call
10883 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10886 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10887 if (off
>= (bfd_vma
) -2)
10889 plt
= htab
->elf
.splt
;
10890 if (!htab
->elf
.dynamic_sections_created
10891 || stub_entry
->h
== NULL
10892 || stub_entry
->h
->elf
.dynindx
== -1)
10893 plt
= htab
->elf
.iplt
;
10894 off
+= (plt
->output_offset
10895 + plt
->output_section
->vma
10896 - elf_gp (plt
->output_section
->owner
)
10897 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10899 size
= plt_stub_size (htab
, stub_entry
, off
);
10900 if (htab
->params
->plt_stub_align
)
10901 size
+= plt_stub_pad (htab
, stub_entry
, off
);
10902 if (info
->emitrelocations
)
10904 stub_entry
->stub_sec
->reloc_count
10905 += ((PPC_HA (off
) != 0)
10907 ? 2 + (htab
->params
->plt_static_chain
10908 && PPC_HA (off
+ 16) == PPC_HA (off
))
10910 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10915 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10918 bfd_vma local_off
= 0;
10920 off
= (stub_entry
->target_value
10921 + stub_entry
->target_section
->output_offset
10922 + stub_entry
->target_section
->output_section
->vma
);
10923 off
-= (stub_entry
->stub_sec
->size
10924 + stub_entry
->stub_sec
->output_offset
10925 + stub_entry
->stub_sec
->output_section
->vma
);
10927 /* Reset the stub type from the plt variant in case we now
10928 can reach with a shorter stub. */
10929 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10930 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10933 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10935 r2off
= get_r2off (info
, stub_entry
);
10936 if (r2off
== 0 && htab
->opd_abi
)
10938 htab
->stub_error
= TRUE
;
10942 if (PPC_HA (r2off
) != 0)
10947 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10949 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10950 Do the same for -R objects without function descriptors. */
10951 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
10952 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
10955 struct ppc_branch_hash_entry
*br_entry
;
10957 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10958 stub_entry
->root
.string
+ 9,
10960 if (br_entry
== NULL
)
10962 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
10963 stub_entry
->root
.string
);
10964 htab
->stub_error
= TRUE
;
10968 if (br_entry
->iter
!= htab
->stub_iteration
)
10970 br_entry
->iter
= htab
->stub_iteration
;
10971 br_entry
->offset
= htab
->brlt
->size
;
10972 htab
->brlt
->size
+= 8;
10974 if (htab
->relbrlt
!= NULL
)
10975 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
10976 else if (info
->emitrelocations
)
10978 htab
->brlt
->reloc_count
+= 1;
10979 htab
->brlt
->flags
|= SEC_RELOC
;
10983 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
10984 off
= (br_entry
->offset
10985 + htab
->brlt
->output_offset
10986 + htab
->brlt
->output_section
->vma
10987 - elf_gp (htab
->brlt
->output_section
->owner
)
10988 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10990 if (info
->emitrelocations
)
10992 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
10993 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10996 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10999 if (PPC_HA (off
) != 0)
11005 if (PPC_HA (off
) != 0)
11008 if (PPC_HA (r2off
) != 0)
11010 if (PPC_LO (r2off
) != 0)
11014 else if (info
->emitrelocations
)
11016 stub_entry
->stub_sec
->reloc_count
+= 1;
11017 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11021 stub_entry
->stub_sec
->size
+= size
;
11025 /* Set up various things so that we can make a list of input sections
11026 for each output section included in the link. Returns -1 on error,
11027 0 when no stubs will be needed, and 1 on success. */
11030 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11033 int top_id
, top_index
, id
;
11035 asection
**input_list
;
11037 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11042 /* Find the top input section id. */
11043 for (input_bfd
= info
->input_bfds
, top_id
= 3;
11045 input_bfd
= input_bfd
->link_next
)
11047 for (section
= input_bfd
->sections
;
11049 section
= section
->next
)
11051 if (top_id
< section
->id
)
11052 top_id
= section
->id
;
11056 htab
->top_id
= top_id
;
11057 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
11058 htab
->stub_group
= bfd_zmalloc (amt
);
11059 if (htab
->stub_group
== NULL
)
11062 /* Set toc_off for com, und, abs and ind sections. */
11063 for (id
= 0; id
< 3; id
++)
11064 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
11066 /* We can't use output_bfd->section_count here to find the top output
11067 section index as some sections may have been removed, and
11068 strip_excluded_output_sections doesn't renumber the indices. */
11069 for (section
= info
->output_bfd
->sections
, top_index
= 0;
11071 section
= section
->next
)
11073 if (top_index
< section
->index
)
11074 top_index
= section
->index
;
11077 htab
->top_index
= top_index
;
11078 amt
= sizeof (asection
*) * (top_index
+ 1);
11079 input_list
= bfd_zmalloc (amt
);
11080 htab
->input_list
= input_list
;
11081 if (input_list
== NULL
)
11087 /* Set up for first pass at multitoc partitioning. */
11090 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11092 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11094 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11095 htab
->toc_bfd
= NULL
;
11096 htab
->toc_first_sec
= NULL
;
11099 /* The linker repeatedly calls this function for each TOC input section
11100 and linker generated GOT section. Group input bfds such that the toc
11101 within a group is less than 64k in size. */
11104 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11106 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11107 bfd_vma addr
, off
, limit
;
11112 if (!htab
->second_toc_pass
)
11114 /* Keep track of the first .toc or .got section for this input bfd. */
11115 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11119 htab
->toc_bfd
= isec
->owner
;
11120 htab
->toc_first_sec
= isec
;
11123 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11124 off
= addr
- htab
->toc_curr
;
11125 limit
= 0x80008000;
11126 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11128 if (off
+ isec
->size
> limit
)
11130 addr
= (htab
->toc_first_sec
->output_offset
11131 + htab
->toc_first_sec
->output_section
->vma
);
11132 htab
->toc_curr
= addr
;
11135 /* toc_curr is the base address of this toc group. Set elf_gp
11136 for the input section to be the offset relative to the
11137 output toc base plus 0x8000. Making the input elf_gp an
11138 offset allows us to move the toc as a whole without
11139 recalculating input elf_gp. */
11140 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11141 off
+= TOC_BASE_OFF
;
11143 /* Die if someone uses a linker script that doesn't keep input
11144 file .toc and .got together. */
11146 && elf_gp (isec
->owner
) != 0
11147 && elf_gp (isec
->owner
) != off
)
11150 elf_gp (isec
->owner
) = off
;
11154 /* During the second pass toc_first_sec points to the start of
11155 a toc group, and toc_curr is used to track the old elf_gp.
11156 We use toc_bfd to ensure we only look at each bfd once. */
11157 if (htab
->toc_bfd
== isec
->owner
)
11159 htab
->toc_bfd
= isec
->owner
;
11161 if (htab
->toc_first_sec
== NULL
11162 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11164 htab
->toc_curr
= elf_gp (isec
->owner
);
11165 htab
->toc_first_sec
= isec
;
11167 addr
= (htab
->toc_first_sec
->output_offset
11168 + htab
->toc_first_sec
->output_section
->vma
);
11169 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11170 elf_gp (isec
->owner
) = off
;
11175 /* Called via elf_link_hash_traverse to merge GOT entries for global
11179 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11181 if (h
->root
.type
== bfd_link_hash_indirect
)
11184 merge_got_entries (&h
->got
.glist
);
11189 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11193 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11195 struct got_entry
*gent
;
11197 if (h
->root
.type
== bfd_link_hash_indirect
)
11200 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11201 if (!gent
->is_indirect
)
11202 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11206 /* Called on the first multitoc pass after the last call to
11207 ppc64_elf_next_toc_section. This function removes duplicate GOT
11211 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11213 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11214 struct bfd
*ibfd
, *ibfd2
;
11215 bfd_boolean done_something
;
11217 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11219 if (!htab
->do_multi_toc
)
11222 /* Merge global sym got entries within a toc group. */
11223 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11225 /* And tlsld_got. */
11226 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11228 struct got_entry
*ent
, *ent2
;
11230 if (!is_ppc64_elf (ibfd
))
11233 ent
= ppc64_tlsld_got (ibfd
);
11234 if (!ent
->is_indirect
11235 && ent
->got
.offset
!= (bfd_vma
) -1)
11237 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
11239 if (!is_ppc64_elf (ibfd2
))
11242 ent2
= ppc64_tlsld_got (ibfd2
);
11243 if (!ent2
->is_indirect
11244 && ent2
->got
.offset
!= (bfd_vma
) -1
11245 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11247 ent2
->is_indirect
= TRUE
;
11248 ent2
->got
.ent
= ent
;
11254 /* Zap sizes of got sections. */
11255 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11256 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11257 htab
->got_reli_size
= 0;
11259 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11261 asection
*got
, *relgot
;
11263 if (!is_ppc64_elf (ibfd
))
11266 got
= ppc64_elf_tdata (ibfd
)->got
;
11269 got
->rawsize
= got
->size
;
11271 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11272 relgot
->rawsize
= relgot
->size
;
11277 /* Now reallocate the got, local syms first. We don't need to
11278 allocate section contents again since we never increase size. */
11279 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11281 struct got_entry
**lgot_ents
;
11282 struct got_entry
**end_lgot_ents
;
11283 struct plt_entry
**local_plt
;
11284 struct plt_entry
**end_local_plt
;
11285 unsigned char *lgot_masks
;
11286 bfd_size_type locsymcount
;
11287 Elf_Internal_Shdr
*symtab_hdr
;
11290 if (!is_ppc64_elf (ibfd
))
11293 lgot_ents
= elf_local_got_ents (ibfd
);
11297 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11298 locsymcount
= symtab_hdr
->sh_info
;
11299 end_lgot_ents
= lgot_ents
+ locsymcount
;
11300 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11301 end_local_plt
= local_plt
+ locsymcount
;
11302 lgot_masks
= (unsigned char *) end_local_plt
;
11303 s
= ppc64_elf_tdata (ibfd
)->got
;
11304 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11306 struct got_entry
*ent
;
11308 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11310 unsigned int ent_size
= 8;
11311 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11313 ent
->got
.offset
= s
->size
;
11314 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11319 s
->size
+= ent_size
;
11320 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11322 htab
->elf
.irelplt
->size
+= rel_size
;
11323 htab
->got_reli_size
+= rel_size
;
11325 else if (info
->shared
)
11327 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11328 srel
->size
+= rel_size
;
11334 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11336 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11338 struct got_entry
*ent
;
11340 if (!is_ppc64_elf (ibfd
))
11343 ent
= ppc64_tlsld_got (ibfd
);
11344 if (!ent
->is_indirect
11345 && ent
->got
.offset
!= (bfd_vma
) -1)
11347 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11348 ent
->got
.offset
= s
->size
;
11352 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11353 srel
->size
+= sizeof (Elf64_External_Rela
);
11358 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11359 if (!done_something
)
11360 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
11364 if (!is_ppc64_elf (ibfd
))
11367 got
= ppc64_elf_tdata (ibfd
)->got
;
11370 done_something
= got
->rawsize
!= got
->size
;
11371 if (done_something
)
11376 if (done_something
)
11377 (*htab
->params
->layout_sections_again
) ();
11379 /* Set up for second pass over toc sections to recalculate elf_gp
11380 on input sections. */
11381 htab
->toc_bfd
= NULL
;
11382 htab
->toc_first_sec
= NULL
;
11383 htab
->second_toc_pass
= TRUE
;
11384 return done_something
;
11387 /* Called after second pass of multitoc partitioning. */
11390 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11392 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11394 /* After the second pass, toc_curr tracks the TOC offset used
11395 for code sections below in ppc64_elf_next_input_section. */
11396 htab
->toc_curr
= TOC_BASE_OFF
;
11399 /* No toc references were found in ISEC. If the code in ISEC makes no
11400 calls, then there's no need to use toc adjusting stubs when branching
11401 into ISEC. Actually, indirect calls from ISEC are OK as they will
11402 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11403 needed, and 2 if a cyclical call-graph was found but no other reason
11404 for a stub was detected. If called from the top level, a return of
11405 2 means the same as a return of 0. */
11408 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11412 /* Mark this section as checked. */
11413 isec
->call_check_done
= 1;
11415 /* We know none of our code bearing sections will need toc stubs. */
11416 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11419 if (isec
->size
== 0)
11422 if (isec
->output_section
== NULL
)
11426 if (isec
->reloc_count
!= 0)
11428 Elf_Internal_Rela
*relstart
, *rel
;
11429 Elf_Internal_Sym
*local_syms
;
11430 struct ppc_link_hash_table
*htab
;
11432 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11433 info
->keep_memory
);
11434 if (relstart
== NULL
)
11437 /* Look for branches to outside of this section. */
11439 htab
= ppc_hash_table (info
);
11443 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11445 enum elf_ppc64_reloc_type r_type
;
11446 unsigned long r_symndx
;
11447 struct elf_link_hash_entry
*h
;
11448 struct ppc_link_hash_entry
*eh
;
11449 Elf_Internal_Sym
*sym
;
11451 struct _opd_sec_data
*opd
;
11455 r_type
= ELF64_R_TYPE (rel
->r_info
);
11456 if (r_type
!= R_PPC64_REL24
11457 && r_type
!= R_PPC64_REL14
11458 && r_type
!= R_PPC64_REL14_BRTAKEN
11459 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11462 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11463 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11470 /* Calls to dynamic lib functions go through a plt call stub
11472 eh
= (struct ppc_link_hash_entry
*) h
;
11474 && (eh
->elf
.plt
.plist
!= NULL
11476 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11482 if (sym_sec
== NULL
)
11483 /* Ignore other undefined symbols. */
11486 /* Assume branches to other sections not included in the
11487 link need stubs too, to cover -R and absolute syms. */
11488 if (sym_sec
->output_section
== NULL
)
11495 sym_value
= sym
->st_value
;
11498 if (h
->root
.type
!= bfd_link_hash_defined
11499 && h
->root
.type
!= bfd_link_hash_defweak
)
11501 sym_value
= h
->root
.u
.def
.value
;
11503 sym_value
+= rel
->r_addend
;
11505 /* If this branch reloc uses an opd sym, find the code section. */
11506 opd
= get_opd_info (sym_sec
);
11509 if (h
== NULL
&& opd
->adjust
!= NULL
)
11513 adjust
= opd
->adjust
[sym
->st_value
/ 8];
11515 /* Assume deleted functions won't ever be called. */
11517 sym_value
+= adjust
;
11520 dest
= opd_entry_value (sym_sec
, sym_value
,
11521 &sym_sec
, NULL
, FALSE
);
11522 if (dest
== (bfd_vma
) -1)
11527 + sym_sec
->output_offset
11528 + sym_sec
->output_section
->vma
);
11530 /* Ignore branch to self. */
11531 if (sym_sec
== isec
)
11534 /* If the called function uses the toc, we need a stub. */
11535 if (sym_sec
->has_toc_reloc
11536 || sym_sec
->makes_toc_func_call
)
11542 /* Assume any branch that needs a long branch stub might in fact
11543 need a plt_branch stub. A plt_branch stub uses r2. */
11544 else if (dest
- (isec
->output_offset
11545 + isec
->output_section
->vma
11546 + rel
->r_offset
) + (1 << 25)
11547 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11555 /* If calling back to a section in the process of being
11556 tested, we can't say for sure that no toc adjusting stubs
11557 are needed, so don't return zero. */
11558 else if (sym_sec
->call_check_in_progress
)
11561 /* Branches to another section that itself doesn't have any TOC
11562 references are OK. Recursively call ourselves to check. */
11563 else if (!sym_sec
->call_check_done
)
11567 /* Mark current section as indeterminate, so that other
11568 sections that call back to current won't be marked as
11570 isec
->call_check_in_progress
= 1;
11571 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11572 isec
->call_check_in_progress
= 0;
11583 if (local_syms
!= NULL
11584 && (elf_symtab_hdr (isec
->owner
).contents
11585 != (unsigned char *) local_syms
))
11587 if (elf_section_data (isec
)->relocs
!= relstart
)
11592 && isec
->map_head
.s
!= NULL
11593 && (strcmp (isec
->output_section
->name
, ".init") == 0
11594 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11596 if (isec
->map_head
.s
->has_toc_reloc
11597 || isec
->map_head
.s
->makes_toc_func_call
)
11599 else if (!isec
->map_head
.s
->call_check_done
)
11602 isec
->call_check_in_progress
= 1;
11603 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11604 isec
->call_check_in_progress
= 0;
11611 isec
->makes_toc_func_call
= 1;
11616 /* The linker repeatedly calls this function for each input section,
11617 in the order that input sections are linked into output sections.
11618 Build lists of input sections to determine groupings between which
11619 we may insert linker stubs. */
11622 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11624 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11629 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11630 && isec
->output_section
->index
<= htab
->top_index
)
11632 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11633 /* Steal the link_sec pointer for our list. */
11634 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11635 /* This happens to make the list in reverse order,
11636 which is what we want. */
11637 PREV_SEC (isec
) = *list
;
11641 if (htab
->multi_toc_needed
)
11643 /* Analyse sections that aren't already flagged as needing a
11644 valid toc pointer. Exclude .fixup for the linux kernel.
11645 .fixup contains branches, but only back to the function that
11646 hit an exception. */
11647 if (!(isec
->has_toc_reloc
11648 || (isec
->flags
& SEC_CODE
) == 0
11649 || strcmp (isec
->name
, ".fixup") == 0
11650 || isec
->call_check_done
))
11652 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11655 /* Make all sections use the TOC assigned for this object file.
11656 This will be wrong for pasted sections; We fix that in
11657 check_pasted_section(). */
11658 if (elf_gp (isec
->owner
) != 0)
11659 htab
->toc_curr
= elf_gp (isec
->owner
);
11662 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11666 /* Check that all .init and .fini sections use the same toc, if they
11667 have toc relocs. */
11670 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11672 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11676 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11677 bfd_vma toc_off
= 0;
11680 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11681 if (i
->has_toc_reloc
)
11684 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11685 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11690 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11691 if (i
->makes_toc_func_call
)
11693 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11697 /* Make sure the whole pasted function uses the same toc offset. */
11699 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11700 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11706 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11708 return (check_pasted_section (info
, ".init")
11709 & check_pasted_section (info
, ".fini"));
11712 /* See whether we can group stub sections together. Grouping stub
11713 sections may result in fewer stubs. More importantly, we need to
11714 put all .init* and .fini* stubs at the beginning of the .init or
11715 .fini output sections respectively, because glibc splits the
11716 _init and _fini functions into multiple parts. Putting a stub in
11717 the middle of a function is not a good idea. */
11720 group_sections (struct ppc_link_hash_table
*htab
,
11721 bfd_size_type stub_group_size
,
11722 bfd_boolean stubs_always_before_branch
)
11725 bfd_size_type stub14_group_size
;
11726 bfd_boolean suppress_size_errors
;
11728 suppress_size_errors
= FALSE
;
11729 stub14_group_size
= stub_group_size
;
11730 if (stub_group_size
== 1)
11732 /* Default values. */
11733 if (stubs_always_before_branch
)
11735 stub_group_size
= 0x1e00000;
11736 stub14_group_size
= 0x7800;
11740 stub_group_size
= 0x1c00000;
11741 stub14_group_size
= 0x7000;
11743 suppress_size_errors
= TRUE
;
11746 list
= htab
->input_list
+ htab
->top_index
;
11749 asection
*tail
= *list
;
11750 while (tail
!= NULL
)
11754 bfd_size_type total
;
11755 bfd_boolean big_sec
;
11759 total
= tail
->size
;
11760 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11761 && ppc64_elf_section_data (tail
)->has_14bit_branch
11762 ? stub14_group_size
: stub_group_size
);
11763 if (big_sec
&& !suppress_size_errors
)
11764 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11765 tail
->owner
, tail
);
11766 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11768 while ((prev
= PREV_SEC (curr
)) != NULL
11769 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11770 < (ppc64_elf_section_data (prev
) != NULL
11771 && ppc64_elf_section_data (prev
)->has_14bit_branch
11772 ? stub14_group_size
: stub_group_size
))
11773 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11776 /* OK, the size from the start of CURR to the end is less
11777 than stub_group_size and thus can be handled by one stub
11778 section. (or the tail section is itself larger than
11779 stub_group_size, in which case we may be toast.) We
11780 should really be keeping track of the total size of stubs
11781 added here, as stubs contribute to the final output
11782 section size. That's a little tricky, and this way will
11783 only break if stubs added make the total size more than
11784 2^25, ie. for the default stub_group_size, if stubs total
11785 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11788 prev
= PREV_SEC (tail
);
11789 /* Set up this stub group. */
11790 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11792 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11794 /* But wait, there's more! Input sections up to stub_group_size
11795 bytes before the stub section can be handled by it too.
11796 Don't do this if we have a really large section after the
11797 stubs, as adding more stubs increases the chance that
11798 branches may not reach into the stub section. */
11799 if (!stubs_always_before_branch
&& !big_sec
)
11802 while (prev
!= NULL
11803 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11804 < (ppc64_elf_section_data (prev
) != NULL
11805 && ppc64_elf_section_data (prev
)->has_14bit_branch
11806 ? stub14_group_size
: stub_group_size
))
11807 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11810 prev
= PREV_SEC (tail
);
11811 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11817 while (list
-- != htab
->input_list
);
11818 free (htab
->input_list
);
11822 static const unsigned char glink_eh_frame_cie
[] =
11824 0, 0, 0, 16, /* length. */
11825 0, 0, 0, 0, /* id. */
11826 1, /* CIE version. */
11827 'z', 'R', 0, /* Augmentation string. */
11828 4, /* Code alignment. */
11829 0x78, /* Data alignment. */
11831 1, /* Augmentation size. */
11832 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11833 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11836 /* Stripping output sections is normally done before dynamic section
11837 symbols have been allocated. This function is called later, and
11838 handles cases like htab->brlt which is mapped to its own output
11842 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11844 if (isec
->size
== 0
11845 && isec
->output_section
->size
== 0
11846 && !(isec
->output_section
->flags
& SEC_KEEP
)
11847 && !bfd_section_removed_from_list (info
->output_bfd
,
11848 isec
->output_section
)
11849 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11851 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11852 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11853 info
->output_bfd
->section_count
--;
11857 /* Determine and set the size of the stub section for a final link.
11859 The basic idea here is to examine all the relocations looking for
11860 PC-relative calls to a target that is unreachable with a "bl"
11864 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
11866 bfd_size_type stub_group_size
;
11867 bfd_boolean stubs_always_before_branch
;
11868 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11873 if (htab
->params
->plt_thread_safe
== -1 && !info
->executable
)
11874 htab
->params
->plt_thread_safe
= 1;
11875 if (!htab
->opd_abi
)
11876 htab
->params
->plt_thread_safe
= 0;
11877 else if (htab
->params
->plt_thread_safe
== -1)
11879 static const char *const thread_starter
[] =
11883 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11885 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11886 "mq_notify", "create_timer",
11890 "GOMP_parallel_start",
11891 "GOMP_parallel_loop_static_start",
11892 "GOMP_parallel_loop_dynamic_start",
11893 "GOMP_parallel_loop_guided_start",
11894 "GOMP_parallel_loop_runtime_start",
11895 "GOMP_parallel_sections_start",
11899 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
11901 struct elf_link_hash_entry
*h
;
11902 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
11903 FALSE
, FALSE
, TRUE
);
11904 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
11905 if (htab
->params
->plt_thread_safe
)
11909 stubs_always_before_branch
= htab
->params
->group_size
< 0;
11910 if (htab
->params
->group_size
< 0)
11911 stub_group_size
= -htab
->params
->group_size
;
11913 stub_group_size
= htab
->params
->group_size
;
11915 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11920 unsigned int bfd_indx
;
11921 asection
*stub_sec
;
11923 htab
->stub_iteration
+= 1;
11925 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11927 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
11929 Elf_Internal_Shdr
*symtab_hdr
;
11931 Elf_Internal_Sym
*local_syms
= NULL
;
11933 if (!is_ppc64_elf (input_bfd
))
11936 /* We'll need the symbol table in a second. */
11937 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11938 if (symtab_hdr
->sh_info
== 0)
11941 /* Walk over each section attached to the input bfd. */
11942 for (section
= input_bfd
->sections
;
11944 section
= section
->next
)
11946 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
11948 /* If there aren't any relocs, then there's nothing more
11950 if ((section
->flags
& SEC_RELOC
) == 0
11951 || (section
->flags
& SEC_ALLOC
) == 0
11952 || (section
->flags
& SEC_LOAD
) == 0
11953 || (section
->flags
& SEC_CODE
) == 0
11954 || section
->reloc_count
== 0)
11957 /* If this section is a link-once section that will be
11958 discarded, then don't create any stubs. */
11959 if (section
->output_section
== NULL
11960 || section
->output_section
->owner
!= info
->output_bfd
)
11963 /* Get the relocs. */
11965 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
11966 info
->keep_memory
);
11967 if (internal_relocs
== NULL
)
11968 goto error_ret_free_local
;
11970 /* Now examine each relocation. */
11971 irela
= internal_relocs
;
11972 irelaend
= irela
+ section
->reloc_count
;
11973 for (; irela
< irelaend
; irela
++)
11975 enum elf_ppc64_reloc_type r_type
;
11976 unsigned int r_indx
;
11977 enum ppc_stub_type stub_type
;
11978 struct ppc_stub_hash_entry
*stub_entry
;
11979 asection
*sym_sec
, *code_sec
;
11980 bfd_vma sym_value
, code_value
;
11981 bfd_vma destination
;
11982 unsigned long local_off
;
11983 bfd_boolean ok_dest
;
11984 struct ppc_link_hash_entry
*hash
;
11985 struct ppc_link_hash_entry
*fdh
;
11986 struct elf_link_hash_entry
*h
;
11987 Elf_Internal_Sym
*sym
;
11989 const asection
*id_sec
;
11990 struct _opd_sec_data
*opd
;
11991 struct plt_entry
*plt_ent
;
11993 r_type
= ELF64_R_TYPE (irela
->r_info
);
11994 r_indx
= ELF64_R_SYM (irela
->r_info
);
11996 if (r_type
>= R_PPC64_max
)
11998 bfd_set_error (bfd_error_bad_value
);
11999 goto error_ret_free_internal
;
12002 /* Only look for stubs on branch instructions. */
12003 if (r_type
!= R_PPC64_REL24
12004 && r_type
!= R_PPC64_REL14
12005 && r_type
!= R_PPC64_REL14_BRTAKEN
12006 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12009 /* Now determine the call target, its name, value,
12011 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12012 r_indx
, input_bfd
))
12013 goto error_ret_free_internal
;
12014 hash
= (struct ppc_link_hash_entry
*) h
;
12021 sym_value
= sym
->st_value
;
12024 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12025 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12027 sym_value
= hash
->elf
.root
.u
.def
.value
;
12028 if (sym_sec
->output_section
!= NULL
)
12031 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12032 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12034 /* Recognise an old ABI func code entry sym, and
12035 use the func descriptor sym instead if it is
12037 if (hash
->elf
.root
.root
.string
[0] == '.'
12038 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12040 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12041 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12043 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12044 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12045 if (sym_sec
->output_section
!= NULL
)
12054 bfd_set_error (bfd_error_bad_value
);
12055 goto error_ret_free_internal
;
12062 sym_value
+= irela
->r_addend
;
12063 destination
= (sym_value
12064 + sym_sec
->output_offset
12065 + sym_sec
->output_section
->vma
);
12066 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12071 code_sec
= sym_sec
;
12072 code_value
= sym_value
;
12073 opd
= get_opd_info (sym_sec
);
12078 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12080 long adjust
= opd
->adjust
[sym_value
/ 8];
12083 code_value
+= adjust
;
12084 sym_value
+= adjust
;
12086 dest
= opd_entry_value (sym_sec
, sym_value
,
12087 &code_sec
, &code_value
, FALSE
);
12088 if (dest
!= (bfd_vma
) -1)
12090 destination
= dest
;
12093 /* Fixup old ABI sym to point at code
12095 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12096 hash
->elf
.root
.u
.def
.section
= code_sec
;
12097 hash
->elf
.root
.u
.def
.value
= code_value
;
12102 /* Determine what (if any) linker stub is needed. */
12104 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12105 &plt_ent
, destination
,
12108 if (stub_type
!= ppc_stub_plt_call
)
12110 /* Check whether we need a TOC adjusting stub.
12111 Since the linker pastes together pieces from
12112 different object files when creating the
12113 _init and _fini functions, it may be that a
12114 call to what looks like a local sym is in
12115 fact a call needing a TOC adjustment. */
12116 if (code_sec
!= NULL
12117 && code_sec
->output_section
!= NULL
12118 && (htab
->stub_group
[code_sec
->id
].toc_off
12119 != htab
->stub_group
[section
->id
].toc_off
)
12120 && (code_sec
->has_toc_reloc
12121 || code_sec
->makes_toc_func_call
))
12122 stub_type
= ppc_stub_long_branch_r2off
;
12125 if (stub_type
== ppc_stub_none
)
12128 /* __tls_get_addr calls might be eliminated. */
12129 if (stub_type
!= ppc_stub_plt_call
12131 && (hash
== htab
->tls_get_addr
12132 || hash
== htab
->tls_get_addr_fd
)
12133 && section
->has_tls_reloc
12134 && irela
!= internal_relocs
)
12136 /* Get tls info. */
12137 unsigned char *tls_mask
;
12139 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12140 irela
- 1, input_bfd
))
12141 goto error_ret_free_internal
;
12142 if (*tls_mask
!= 0)
12146 if (stub_type
== ppc_stub_plt_call
12147 && irela
+ 1 < irelaend
12148 && irela
[1].r_offset
== irela
->r_offset
+ 4
12149 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12151 if (!tocsave_find (htab
, INSERT
,
12152 &local_syms
, irela
+ 1, input_bfd
))
12153 goto error_ret_free_internal
;
12155 else if (stub_type
== ppc_stub_plt_call
)
12156 stub_type
= ppc_stub_plt_call_r2save
;
12158 /* Support for grouping stub sections. */
12159 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
12161 /* Get the name of this stub. */
12162 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12164 goto error_ret_free_internal
;
12166 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12167 stub_name
, FALSE
, FALSE
);
12168 if (stub_entry
!= NULL
)
12170 /* The proper stub has already been created. */
12172 if (stub_type
== ppc_stub_plt_call_r2save
)
12173 stub_entry
->stub_type
= stub_type
;
12177 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12178 if (stub_entry
== NULL
)
12181 error_ret_free_internal
:
12182 if (elf_section_data (section
)->relocs
== NULL
)
12183 free (internal_relocs
);
12184 error_ret_free_local
:
12185 if (local_syms
!= NULL
12186 && (symtab_hdr
->contents
12187 != (unsigned char *) local_syms
))
12192 stub_entry
->stub_type
= stub_type
;
12193 if (stub_type
!= ppc_stub_plt_call
12194 && stub_type
!= ppc_stub_plt_call_r2save
)
12196 stub_entry
->target_value
= code_value
;
12197 stub_entry
->target_section
= code_sec
;
12201 stub_entry
->target_value
= sym_value
;
12202 stub_entry
->target_section
= sym_sec
;
12204 stub_entry
->h
= hash
;
12205 stub_entry
->plt_ent
= plt_ent
;
12206 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12208 if (stub_entry
->h
!= NULL
)
12209 htab
->stub_globals
+= 1;
12212 /* We're done with the internal relocs, free them. */
12213 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12214 free (internal_relocs
);
12217 if (local_syms
!= NULL
12218 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12220 if (!info
->keep_memory
)
12223 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12227 /* We may have added some stubs. Find out the new size of the
12229 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12231 stub_sec
= stub_sec
->next
)
12232 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12234 stub_sec
->rawsize
= stub_sec
->size
;
12235 stub_sec
->size
= 0;
12236 stub_sec
->reloc_count
= 0;
12237 stub_sec
->flags
&= ~SEC_RELOC
;
12240 htab
->brlt
->size
= 0;
12241 htab
->brlt
->reloc_count
= 0;
12242 htab
->brlt
->flags
&= ~SEC_RELOC
;
12243 if (htab
->relbrlt
!= NULL
)
12244 htab
->relbrlt
->size
= 0;
12246 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12248 if (info
->emitrelocations
12249 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12251 htab
->glink
->reloc_count
= 1;
12252 htab
->glink
->flags
|= SEC_RELOC
;
12255 if (htab
->glink_eh_frame
!= NULL
12256 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12257 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12259 size_t size
= 0, align
;
12261 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12263 stub_sec
= stub_sec
->next
)
12264 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12266 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12269 size
+= sizeof (glink_eh_frame_cie
);
12271 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12273 size
= (size
+ align
) & ~align
;
12274 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12275 htab
->glink_eh_frame
->size
= size
;
12278 if (htab
->params
->plt_stub_align
!= 0)
12279 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12281 stub_sec
= stub_sec
->next
)
12282 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12283 stub_sec
->size
= ((stub_sec
->size
12284 + (1 << htab
->params
->plt_stub_align
) - 1)
12285 & (-1 << htab
->params
->plt_stub_align
));
12287 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12289 stub_sec
= stub_sec
->next
)
12290 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12291 && stub_sec
->rawsize
!= stub_sec
->size
)
12294 /* Exit from this loop when no stubs have been added, and no stubs
12295 have changed size. */
12296 if (stub_sec
== NULL
12297 && (htab
->glink_eh_frame
== NULL
12298 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12301 /* Ask the linker to do its stuff. */
12302 (*htab
->params
->layout_sections_again
) ();
12305 maybe_strip_output (info
, htab
->brlt
);
12306 if (htab
->glink_eh_frame
!= NULL
)
12307 maybe_strip_output (info
, htab
->glink_eh_frame
);
12312 /* Called after we have determined section placement. If sections
12313 move, we'll be called again. Provide a value for TOCstart. */
12316 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12321 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12322 order. The TOC starts where the first of these sections starts. */
12323 s
= bfd_get_section_by_name (obfd
, ".got");
12324 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12325 s
= bfd_get_section_by_name (obfd
, ".toc");
12326 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12327 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12328 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12329 s
= bfd_get_section_by_name (obfd
, ".plt");
12330 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12332 /* This may happen for
12333 o references to TOC base (SYM@toc / TOC[tc0]) without a
12335 o bad linker script
12336 o --gc-sections and empty TOC sections
12338 FIXME: Warn user? */
12340 /* Look for a likely section. We probably won't even be
12342 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12343 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12345 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12348 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12349 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12350 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12353 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12354 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12358 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12359 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12365 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12367 _bfd_set_gp_value (obfd
, TOCstart
);
12369 if (info
!= NULL
&& s
!= NULL
&& is_ppc64_elf (obfd
))
12371 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12374 && htab
->elf
.hgot
!= NULL
)
12376 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
12377 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12383 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12384 write out any global entry stubs. */
12387 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12389 struct bfd_link_info
*info
;
12390 struct ppc_link_hash_table
*htab
;
12391 struct plt_entry
*pent
;
12394 if (h
->root
.type
== bfd_link_hash_indirect
)
12397 if (!h
->pointer_equality_needed
)
12400 if (h
->def_regular
)
12404 htab
= ppc_hash_table (info
);
12409 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12410 if (pent
->plt
.offset
!= (bfd_vma
) -1
12411 && pent
->addend
== 0)
12417 p
= s
->contents
+ h
->root
.u
.def
.value
;
12418 plt
= htab
->elf
.splt
;
12419 if (!htab
->elf
.dynamic_sections_created
12420 || h
->dynindx
== -1)
12421 plt
= htab
->elf
.iplt
;
12422 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12423 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12425 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12427 info
->callbacks
->einfo
12428 (_("%P: linkage table error against `%T'\n"),
12429 h
->root
.root
.string
);
12430 bfd_set_error (bfd_error_bad_value
);
12431 htab
->stub_error
= TRUE
;
12434 if (PPC_HA (off
) != 0)
12436 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12439 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12441 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12443 bfd_put_32 (s
->owner
, BCTR
, p
);
12449 /* Build all the stubs associated with the current output file.
12450 The stubs are kept in a hash table attached to the main linker
12451 hash table. This function is called via gldelf64ppc_finish. */
12454 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12457 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12458 asection
*stub_sec
;
12460 int stub_sec_count
= 0;
12465 /* Allocate memory to hold the linker stubs. */
12466 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12468 stub_sec
= stub_sec
->next
)
12469 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12470 && stub_sec
->size
!= 0)
12472 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12473 if (stub_sec
->contents
== NULL
)
12475 /* We want to check that built size is the same as calculated
12476 size. rawsize is a convenient location to use. */
12477 stub_sec
->rawsize
= stub_sec
->size
;
12478 stub_sec
->size
= 0;
12481 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12486 /* Build the .glink plt call stub. */
12487 if (htab
->params
->emit_stub_syms
)
12489 struct elf_link_hash_entry
*h
;
12490 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12491 TRUE
, FALSE
, FALSE
);
12494 if (h
->root
.type
== bfd_link_hash_new
)
12496 h
->root
.type
= bfd_link_hash_defined
;
12497 h
->root
.u
.def
.section
= htab
->glink
;
12498 h
->root
.u
.def
.value
= 8;
12499 h
->ref_regular
= 1;
12500 h
->def_regular
= 1;
12501 h
->ref_regular_nonweak
= 1;
12502 h
->forced_local
= 1;
12506 plt0
= (htab
->elf
.splt
->output_section
->vma
12507 + htab
->elf
.splt
->output_offset
12509 if (info
->emitrelocations
)
12511 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12514 r
->r_offset
= (htab
->glink
->output_offset
12515 + htab
->glink
->output_section
->vma
);
12516 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12517 r
->r_addend
= plt0
;
12519 p
= htab
->glink
->contents
;
12520 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12521 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12525 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12527 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12529 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12531 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12533 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12535 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12537 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12539 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12541 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12543 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12548 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12550 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12552 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12554 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12556 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12558 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
12560 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12562 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
12564 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12566 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
12568 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12570 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
12573 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12575 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12577 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12581 /* Build the .glink lazy link call stubs. */
12583 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
12589 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12594 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12596 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
12601 bfd_put_32 (htab
->glink
->owner
,
12602 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12607 /* Build .glink global entry stubs. */
12608 if (htab
->glink
->size
> htab
->glink
->rawsize
)
12609 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
12612 if (htab
->brlt
->size
!= 0)
12614 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12616 if (htab
->brlt
->contents
== NULL
)
12619 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12621 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12622 htab
->relbrlt
->size
);
12623 if (htab
->relbrlt
->contents
== NULL
)
12627 if (htab
->glink_eh_frame
!= NULL
12628 && htab
->glink_eh_frame
->size
!= 0)
12631 bfd_byte
*last_fde
;
12632 size_t last_fde_len
, size
, align
, pad
;
12634 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12637 htab
->glink_eh_frame
->contents
= p
;
12640 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12642 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12643 /* CIE length (rewrite in case little-endian). */
12644 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12645 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12646 p
+= sizeof (glink_eh_frame_cie
);
12648 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12650 stub_sec
= stub_sec
->next
)
12651 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12656 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
12659 val
= p
- htab
->glink_eh_frame
->contents
;
12660 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12662 /* Offset to stub section. */
12663 val
= (stub_sec
->output_section
->vma
12664 + stub_sec
->output_offset
);
12665 val
-= (htab
->glink_eh_frame
->output_section
->vma
12666 + htab
->glink_eh_frame
->output_offset
);
12667 val
-= p
- htab
->glink_eh_frame
->contents
;
12668 if (val
+ 0x80000000 > 0xffffffff)
12670 info
->callbacks
->einfo
12671 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12675 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12677 /* stub section size. */
12678 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
12680 /* Augmentation. */
12685 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12690 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12693 val
= p
- htab
->glink_eh_frame
->contents
;
12694 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12696 /* Offset to .glink. */
12697 val
= (htab
->glink
->output_section
->vma
12698 + htab
->glink
->output_offset
12700 val
-= (htab
->glink_eh_frame
->output_section
->vma
12701 + htab
->glink_eh_frame
->output_offset
);
12702 val
-= p
- htab
->glink_eh_frame
->contents
;
12703 if (val
+ 0x80000000 > 0xffffffff)
12705 info
->callbacks
->einfo
12706 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12707 htab
->glink
->name
);
12710 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12713 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12715 /* Augmentation. */
12718 *p
++ = DW_CFA_advance_loc
+ 1;
12719 *p
++ = DW_CFA_register
;
12722 *p
++ = DW_CFA_advance_loc
+ 4;
12723 *p
++ = DW_CFA_restore_extended
;
12726 /* Subsume any padding into the last FDE if user .eh_frame
12727 sections are aligned more than glink_eh_frame. Otherwise any
12728 zero padding will be seen as a terminator. */
12729 size
= p
- htab
->glink_eh_frame
->contents
;
12731 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12733 pad
= ((size
+ align
) & ~align
) - size
;
12734 htab
->glink_eh_frame
->size
= size
+ pad
;
12735 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12738 /* Build the stubs as directed by the stub hash table. */
12739 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12741 if (htab
->relbrlt
!= NULL
)
12742 htab
->relbrlt
->reloc_count
= 0;
12744 if (htab
->params
->plt_stub_align
!= 0)
12745 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12747 stub_sec
= stub_sec
->next
)
12748 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12749 stub_sec
->size
= ((stub_sec
->size
12750 + (1 << htab
->params
->plt_stub_align
) - 1)
12751 & (-1 << htab
->params
->plt_stub_align
));
12753 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12755 stub_sec
= stub_sec
->next
)
12756 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12758 stub_sec_count
+= 1;
12759 if (stub_sec
->rawsize
!= stub_sec
->size
)
12763 if (stub_sec
!= NULL
12764 || (htab
->glink_eh_frame
!= NULL
12765 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12767 htab
->stub_error
= TRUE
;
12768 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12771 if (htab
->stub_error
)
12776 *stats
= bfd_malloc (500);
12777 if (*stats
== NULL
)
12780 sprintf (*stats
, _("linker stubs in %u group%s\n"
12782 " toc adjust %lu\n"
12783 " long branch %lu\n"
12784 " long toc adj %lu\n"
12786 " plt call toc %lu"),
12788 stub_sec_count
== 1 ? "" : "s",
12789 htab
->stub_count
[ppc_stub_long_branch
- 1],
12790 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12791 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12792 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12793 htab
->stub_count
[ppc_stub_plt_call
- 1],
12794 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1]);
12799 /* This function undoes the changes made by add_symbol_adjust. */
12802 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12804 struct ppc_link_hash_entry
*eh
;
12806 if (h
->root
.type
== bfd_link_hash_indirect
)
12809 eh
= (struct ppc_link_hash_entry
*) h
;
12810 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12813 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12818 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12820 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12823 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12826 /* What to do when ld finds relocations against symbols defined in
12827 discarded sections. */
12829 static unsigned int
12830 ppc64_elf_action_discarded (asection
*sec
)
12832 if (strcmp (".opd", sec
->name
) == 0)
12835 if (strcmp (".toc", sec
->name
) == 0)
12838 if (strcmp (".toc1", sec
->name
) == 0)
12841 return _bfd_elf_default_action_discarded (sec
);
12844 /* The RELOCATE_SECTION function is called by the ELF backend linker
12845 to handle the relocations for a section.
12847 The relocs are always passed as Rela structures; if the section
12848 actually uses Rel structures, the r_addend field will always be
12851 This function is responsible for adjust the section contents as
12852 necessary, and (if using Rela relocs and generating a
12853 relocatable output file) adjusting the reloc addend as
12856 This function does not have to worry about setting the reloc
12857 address or the reloc symbol index.
12859 LOCAL_SYMS is a pointer to the swapped in local symbols.
12861 LOCAL_SECTIONS is an array giving the section in the input file
12862 corresponding to the st_shndx field of each local symbol.
12864 The global hash table entry for the global symbols can be found
12865 via elf_sym_hashes (input_bfd).
12867 When generating relocatable output, this function must handle
12868 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12869 going to be the section symbol corresponding to the output
12870 section, which means that the addend must be adjusted
12874 ppc64_elf_relocate_section (bfd
*output_bfd
,
12875 struct bfd_link_info
*info
,
12877 asection
*input_section
,
12878 bfd_byte
*contents
,
12879 Elf_Internal_Rela
*relocs
,
12880 Elf_Internal_Sym
*local_syms
,
12881 asection
**local_sections
)
12883 struct ppc_link_hash_table
*htab
;
12884 Elf_Internal_Shdr
*symtab_hdr
;
12885 struct elf_link_hash_entry
**sym_hashes
;
12886 Elf_Internal_Rela
*rel
;
12887 Elf_Internal_Rela
*relend
;
12888 Elf_Internal_Rela outrel
;
12890 struct got_entry
**local_got_ents
;
12892 bfd_boolean ret
= TRUE
;
12893 bfd_boolean is_opd
;
12894 /* Assume 'at' branch hints. */
12895 bfd_boolean is_isa_v2
= TRUE
;
12896 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
12898 /* Initialize howto table if needed. */
12899 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
12902 htab
= ppc_hash_table (info
);
12906 /* Don't relocate stub sections. */
12907 if (input_section
->owner
== htab
->params
->stub_bfd
)
12910 BFD_ASSERT (is_ppc64_elf (input_bfd
));
12912 local_got_ents
= elf_local_got_ents (input_bfd
);
12913 TOCstart
= elf_gp (output_bfd
);
12914 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12915 sym_hashes
= elf_sym_hashes (input_bfd
);
12916 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
12919 relend
= relocs
+ input_section
->reloc_count
;
12920 for (; rel
< relend
; rel
++)
12922 enum elf_ppc64_reloc_type r_type
;
12924 bfd_reloc_status_type r
;
12925 Elf_Internal_Sym
*sym
;
12927 struct elf_link_hash_entry
*h_elf
;
12928 struct ppc_link_hash_entry
*h
;
12929 struct ppc_link_hash_entry
*fdh
;
12930 const char *sym_name
;
12931 unsigned long r_symndx
, toc_symndx
;
12932 bfd_vma toc_addend
;
12933 unsigned char tls_mask
, tls_gd
, tls_type
;
12934 unsigned char sym_type
;
12935 bfd_vma relocation
;
12936 bfd_boolean unresolved_reloc
;
12937 bfd_boolean warned
;
12938 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
12941 struct ppc_stub_hash_entry
*stub_entry
;
12942 bfd_vma max_br_offset
;
12944 const Elf_Internal_Rela orig_rel
= *rel
;
12945 reloc_howto_type
*howto
;
12946 struct reloc_howto_struct alt_howto
;
12948 r_type
= ELF64_R_TYPE (rel
->r_info
);
12949 r_symndx
= ELF64_R_SYM (rel
->r_info
);
12951 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12952 symbol of the previous ADDR64 reloc. The symbol gives us the
12953 proper TOC base to use. */
12954 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
12956 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
12958 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
12964 unresolved_reloc
= FALSE
;
12967 if (r_symndx
< symtab_hdr
->sh_info
)
12969 /* It's a local symbol. */
12970 struct _opd_sec_data
*opd
;
12972 sym
= local_syms
+ r_symndx
;
12973 sec
= local_sections
[r_symndx
];
12974 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
12975 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
12976 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
12977 opd
= get_opd_info (sec
);
12978 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
12980 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
12985 /* If this is a relocation against the opd section sym
12986 and we have edited .opd, adjust the reloc addend so
12987 that ld -r and ld --emit-relocs output is correct.
12988 If it is a reloc against some other .opd symbol,
12989 then the symbol value will be adjusted later. */
12990 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
12991 rel
->r_addend
+= adjust
;
12993 relocation
+= adjust
;
12999 bfd_boolean ignored
;
13001 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13002 r_symndx
, symtab_hdr
, sym_hashes
,
13003 h_elf
, sec
, relocation
,
13004 unresolved_reloc
, warned
, ignored
);
13005 sym_name
= h_elf
->root
.root
.string
;
13006 sym_type
= h_elf
->type
;
13008 && sec
->owner
== output_bfd
13009 && strcmp (sec
->name
, ".opd") == 0)
13011 /* This is a symbol defined in a linker script. All
13012 such are defined in output sections, even those
13013 defined by simple assignment from a symbol defined in
13014 an input section. Transfer the symbol to an
13015 appropriate input .opd section, so that a branch to
13016 this symbol will be mapped to the location specified
13017 by the opd entry. */
13018 struct bfd_link_order
*lo
;
13019 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13020 if (lo
->type
== bfd_indirect_link_order
)
13022 asection
*isec
= lo
->u
.indirect
.section
;
13023 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13024 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13027 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13028 h_elf
->root
.u
.def
.section
= isec
;
13035 h
= (struct ppc_link_hash_entry
*) h_elf
;
13037 if (sec
!= NULL
&& discarded_section (sec
))
13038 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
13040 ppc64_elf_howto_table
[r_type
], 0,
13043 if (info
->relocatable
)
13046 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13048 relocation
= (TOCstart
13049 + htab
->stub_group
[input_section
->id
].toc_off
);
13050 sec
= bfd_abs_section_ptr
;
13051 unresolved_reloc
= FALSE
;
13054 /* TLS optimizations. Replace instruction sequences and relocs
13055 based on information we collected in tls_optimize. We edit
13056 RELOCS so that --emit-relocs will output something sensible
13057 for the final instruction stream. */
13062 tls_mask
= h
->tls_mask
;
13063 else if (local_got_ents
!= NULL
)
13065 struct plt_entry
**local_plt
= (struct plt_entry
**)
13066 (local_got_ents
+ symtab_hdr
->sh_info
);
13067 unsigned char *lgot_masks
= (unsigned char *)
13068 (local_plt
+ symtab_hdr
->sh_info
);
13069 tls_mask
= lgot_masks
[r_symndx
];
13072 && (r_type
== R_PPC64_TLS
13073 || r_type
== R_PPC64_TLSGD
13074 || r_type
== R_PPC64_TLSLD
))
13076 /* Check for toc tls entries. */
13077 unsigned char *toc_tls
;
13079 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13080 &local_syms
, rel
, input_bfd
))
13084 tls_mask
= *toc_tls
;
13087 /* Check that tls relocs are used with tls syms, and non-tls
13088 relocs are used with non-tls syms. */
13089 if (r_symndx
!= STN_UNDEF
13090 && r_type
!= R_PPC64_NONE
13092 || h
->elf
.root
.type
== bfd_link_hash_defined
13093 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13094 && (IS_PPC64_TLS_RELOC (r_type
)
13095 != (sym_type
== STT_TLS
13096 || (sym_type
== STT_SECTION
13097 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13100 && (r_type
== R_PPC64_TLS
13101 || r_type
== R_PPC64_TLSGD
13102 || r_type
== R_PPC64_TLSLD
))
13103 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13106 info
->callbacks
->einfo
13107 (!IS_PPC64_TLS_RELOC (r_type
)
13108 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13109 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13110 input_bfd
, input_section
, rel
->r_offset
,
13111 ppc64_elf_howto_table
[r_type
]->name
,
13115 /* Ensure reloc mapping code below stays sane. */
13116 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13117 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13118 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13119 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13120 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13121 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13122 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13123 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13124 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13125 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13133 case R_PPC64_LO_DS_OPT
:
13134 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13135 if ((insn
& (0x3f << 26)) != 58u << 26)
13137 insn
+= (14u << 26) - (58u << 26);
13138 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13139 r_type
= R_PPC64_TOC16_LO
;
13140 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13143 case R_PPC64_TOC16
:
13144 case R_PPC64_TOC16_LO
:
13145 case R_PPC64_TOC16_DS
:
13146 case R_PPC64_TOC16_LO_DS
:
13148 /* Check for toc tls entries. */
13149 unsigned char *toc_tls
;
13152 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13153 &local_syms
, rel
, input_bfd
);
13159 tls_mask
= *toc_tls
;
13160 if (r_type
== R_PPC64_TOC16_DS
13161 || r_type
== R_PPC64_TOC16_LO_DS
)
13164 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13169 /* If we found a GD reloc pair, then we might be
13170 doing a GD->IE transition. */
13173 tls_gd
= TLS_TPRELGD
;
13174 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13177 else if (retval
== 3)
13179 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13187 case R_PPC64_GOT_TPREL16_HI
:
13188 case R_PPC64_GOT_TPREL16_HA
:
13190 && (tls_mask
& TLS_TPREL
) == 0)
13192 rel
->r_offset
-= d_offset
;
13193 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13194 r_type
= R_PPC64_NONE
;
13195 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13199 case R_PPC64_GOT_TPREL16_DS
:
13200 case R_PPC64_GOT_TPREL16_LO_DS
:
13202 && (tls_mask
& TLS_TPREL
) == 0)
13205 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13207 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13208 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13209 r_type
= R_PPC64_TPREL16_HA
;
13210 if (toc_symndx
!= 0)
13212 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13213 rel
->r_addend
= toc_addend
;
13214 /* We changed the symbol. Start over in order to
13215 get h, sym, sec etc. right. */
13220 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13226 && (tls_mask
& TLS_TPREL
) == 0)
13228 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13229 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13232 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13233 /* Was PPC64_TLS which sits on insn boundary, now
13234 PPC64_TPREL16_LO which is at low-order half-word. */
13235 rel
->r_offset
+= d_offset
;
13236 r_type
= R_PPC64_TPREL16_LO
;
13237 if (toc_symndx
!= 0)
13239 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13240 rel
->r_addend
= toc_addend
;
13241 /* We changed the symbol. Start over in order to
13242 get h, sym, sec etc. right. */
13247 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13251 case R_PPC64_GOT_TLSGD16_HI
:
13252 case R_PPC64_GOT_TLSGD16_HA
:
13253 tls_gd
= TLS_TPRELGD
;
13254 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13258 case R_PPC64_GOT_TLSLD16_HI
:
13259 case R_PPC64_GOT_TLSLD16_HA
:
13260 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13263 if ((tls_mask
& tls_gd
) != 0)
13264 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13265 + R_PPC64_GOT_TPREL16_DS
);
13268 rel
->r_offset
-= d_offset
;
13269 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13270 r_type
= R_PPC64_NONE
;
13272 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13276 case R_PPC64_GOT_TLSGD16
:
13277 case R_PPC64_GOT_TLSGD16_LO
:
13278 tls_gd
= TLS_TPRELGD
;
13279 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13283 case R_PPC64_GOT_TLSLD16
:
13284 case R_PPC64_GOT_TLSLD16_LO
:
13285 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13287 unsigned int insn1
, insn2
, insn3
;
13291 offset
= (bfd_vma
) -1;
13292 /* If not using the newer R_PPC64_TLSGD/LD to mark
13293 __tls_get_addr calls, we must trust that the call
13294 stays with its arg setup insns, ie. that the next
13295 reloc is the __tls_get_addr call associated with
13296 the current reloc. Edit both insns. */
13297 if (input_section
->has_tls_get_addr_call
13298 && rel
+ 1 < relend
13299 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13300 htab
->tls_get_addr
,
13301 htab
->tls_get_addr_fd
))
13302 offset
= rel
[1].r_offset
;
13303 if ((tls_mask
& tls_gd
) != 0)
13306 insn1
= bfd_get_32 (output_bfd
,
13307 contents
+ rel
->r_offset
- d_offset
);
13308 insn1
&= (1 << 26) - (1 << 2);
13309 insn1
|= 58 << 26; /* ld */
13310 insn2
= 0x7c636a14; /* add 3,3,13 */
13311 if (offset
!= (bfd_vma
) -1)
13312 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13313 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13314 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13315 + R_PPC64_GOT_TPREL16_DS
);
13317 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13318 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13323 insn1
= 0x3c6d0000; /* addis 3,13,0 */
13324 insn2
= 0x38630000; /* addi 3,3,0 */
13327 /* Was an LD reloc. */
13329 sec
= local_sections
[toc_symndx
];
13331 r_symndx
< symtab_hdr
->sh_info
;
13333 if (local_sections
[r_symndx
] == sec
)
13335 if (r_symndx
>= symtab_hdr
->sh_info
)
13336 r_symndx
= STN_UNDEF
;
13337 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13338 if (r_symndx
!= STN_UNDEF
)
13339 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13340 + sec
->output_offset
13341 + sec
->output_section
->vma
);
13343 else if (toc_symndx
!= 0)
13345 r_symndx
= toc_symndx
;
13346 rel
->r_addend
= toc_addend
;
13348 r_type
= R_PPC64_TPREL16_HA
;
13349 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13350 if (offset
!= (bfd_vma
) -1)
13352 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13353 R_PPC64_TPREL16_LO
);
13354 rel
[1].r_offset
= offset
+ d_offset
;
13355 rel
[1].r_addend
= rel
->r_addend
;
13358 bfd_put_32 (output_bfd
, insn1
,
13359 contents
+ rel
->r_offset
- d_offset
);
13360 if (offset
!= (bfd_vma
) -1)
13362 insn3
= bfd_get_32 (output_bfd
,
13363 contents
+ offset
+ 4);
13365 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13367 rel
[1].r_offset
+= 4;
13368 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13371 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13373 if ((tls_mask
& tls_gd
) == 0
13374 && (tls_gd
== 0 || toc_symndx
!= 0))
13376 /* We changed the symbol. Start over in order
13377 to get h, sym, sec etc. right. */
13384 case R_PPC64_TLSGD
:
13385 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13387 unsigned int insn2
, insn3
;
13388 bfd_vma offset
= rel
->r_offset
;
13390 if ((tls_mask
& TLS_TPRELGD
) != 0)
13393 r_type
= R_PPC64_NONE
;
13394 insn2
= 0x7c636a14; /* add 3,3,13 */
13399 if (toc_symndx
!= 0)
13401 r_symndx
= toc_symndx
;
13402 rel
->r_addend
= toc_addend
;
13404 r_type
= R_PPC64_TPREL16_LO
;
13405 rel
->r_offset
= offset
+ d_offset
;
13406 insn2
= 0x38630000; /* addi 3,3,0 */
13408 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13409 /* Zap the reloc on the _tls_get_addr call too. */
13410 BFD_ASSERT (offset
== rel
[1].r_offset
);
13411 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13412 insn3
= bfd_get_32 (output_bfd
,
13413 contents
+ offset
+ 4);
13415 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13417 rel
->r_offset
+= 4;
13418 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13421 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13422 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13430 case R_PPC64_TLSLD
:
13431 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13433 unsigned int insn2
, insn3
;
13434 bfd_vma offset
= rel
->r_offset
;
13437 sec
= local_sections
[toc_symndx
];
13439 r_symndx
< symtab_hdr
->sh_info
;
13441 if (local_sections
[r_symndx
] == sec
)
13443 if (r_symndx
>= symtab_hdr
->sh_info
)
13444 r_symndx
= STN_UNDEF
;
13445 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13446 if (r_symndx
!= STN_UNDEF
)
13447 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13448 + sec
->output_offset
13449 + sec
->output_section
->vma
);
13451 r_type
= R_PPC64_TPREL16_LO
;
13452 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13453 rel
->r_offset
= offset
+ d_offset
;
13454 /* Zap the reloc on the _tls_get_addr call too. */
13455 BFD_ASSERT (offset
== rel
[1].r_offset
);
13456 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13457 insn2
= 0x38630000; /* addi 3,3,0 */
13458 insn3
= bfd_get_32 (output_bfd
,
13459 contents
+ offset
+ 4);
13461 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13463 rel
->r_offset
+= 4;
13464 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13467 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13473 case R_PPC64_DTPMOD64
:
13474 if (rel
+ 1 < relend
13475 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13476 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13478 if ((tls_mask
& TLS_GD
) == 0)
13480 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13481 if ((tls_mask
& TLS_TPRELGD
) != 0)
13482 r_type
= R_PPC64_TPREL64
;
13485 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13486 r_type
= R_PPC64_NONE
;
13488 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13493 if ((tls_mask
& TLS_LD
) == 0)
13495 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13496 r_type
= R_PPC64_NONE
;
13497 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13502 case R_PPC64_TPREL64
:
13503 if ((tls_mask
& TLS_TPREL
) == 0)
13505 r_type
= R_PPC64_NONE
;
13506 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13510 case R_PPC64_REL16_HA
:
13511 /* If we are generating a non-PIC executable, edit
13512 . 0: addis 2,12,.TOC.-0b@ha
13513 . addi 2,2,.TOC.-0b@l
13514 used by ELFv2 global entry points to set up r2, to
13517 if .TOC. is in range. */
13519 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13520 && rel
+ 1 < relend
13521 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13522 && rel
[1].r_offset
== rel
->r_offset
+ 4
13523 && rel
[1].r_addend
== rel
->r_addend
+ 4
13524 && relocation
+ 0x80008000 <= 0xffffffff)
13526 unsigned int insn1
, insn2
;
13527 bfd_vma offset
= rel
->r_offset
- d_offset
;
13528 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13529 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13530 if ((insn1
& 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13531 && (insn2
& 0xffff0000) == 0x38420000 /* addi 2,2 */)
13533 r_type
= R_PPC64_ADDR16_HA
;
13534 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13535 rel
->r_addend
-= d_offset
;
13536 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13537 rel
[1].r_addend
-= d_offset
+ 4;
13538 bfd_put_32 (output_bfd
, 0x3c400000, contents
+ offset
);
13544 /* Handle other relocations that tweak non-addend part of insn. */
13546 max_br_offset
= 1 << 25;
13547 addend
= rel
->r_addend
;
13548 reloc_dest
= DEST_NORMAL
;
13554 case R_PPC64_TOCSAVE
:
13555 if (relocation
+ addend
== (rel
->r_offset
13556 + input_section
->output_offset
13557 + input_section
->output_section
->vma
)
13558 && tocsave_find (htab
, NO_INSERT
,
13559 &local_syms
, rel
, input_bfd
))
13561 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13563 || insn
== CROR_151515
|| insn
== CROR_313131
)
13564 bfd_put_32 (input_bfd
,
13565 STD_R2_0R1
+ STK_TOC (htab
),
13566 contents
+ rel
->r_offset
);
13570 /* Branch taken prediction relocations. */
13571 case R_PPC64_ADDR14_BRTAKEN
:
13572 case R_PPC64_REL14_BRTAKEN
:
13573 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13576 /* Branch not taken prediction relocations. */
13577 case R_PPC64_ADDR14_BRNTAKEN
:
13578 case R_PPC64_REL14_BRNTAKEN
:
13579 insn
|= bfd_get_32 (output_bfd
,
13580 contents
+ rel
->r_offset
) & ~(0x01 << 21);
13583 case R_PPC64_REL14
:
13584 max_br_offset
= 1 << 15;
13587 case R_PPC64_REL24
:
13588 /* Calls to functions with a different TOC, such as calls to
13589 shared objects, need to alter the TOC pointer. This is
13590 done using a linkage stub. A REL24 branching to these
13591 linkage stubs needs to be followed by a nop, as the nop
13592 will be replaced with an instruction to restore the TOC
13597 && h
->oh
->is_func_descriptor
)
13598 fdh
= ppc_follow_link (h
->oh
);
13599 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13601 if (stub_entry
!= NULL
13602 && (stub_entry
->stub_type
== ppc_stub_plt_call
13603 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13604 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13605 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13607 bfd_boolean can_plt_call
= FALSE
;
13609 /* All of these stubs will modify r2, so there must be a
13610 branch and link followed by a nop. The nop is
13611 replaced by an insn to restore r2. */
13612 if (rel
->r_offset
+ 8 <= input_section
->size
)
13616 br
= bfd_get_32 (input_bfd
,
13617 contents
+ rel
->r_offset
);
13622 nop
= bfd_get_32 (input_bfd
,
13623 contents
+ rel
->r_offset
+ 4);
13625 || nop
== CROR_151515
|| nop
== CROR_313131
)
13628 && (h
== htab
->tls_get_addr_fd
13629 || h
== htab
->tls_get_addr
)
13630 && !htab
->params
->no_tls_get_addr_opt
)
13632 /* Special stub used, leave nop alone. */
13635 bfd_put_32 (input_bfd
,
13636 LD_R2_0R1
+ STK_TOC (htab
),
13637 contents
+ rel
->r_offset
+ 4);
13638 can_plt_call
= TRUE
;
13643 if (!can_plt_call
&& h
!= NULL
)
13645 const char *name
= h
->elf
.root
.root
.string
;
13650 if (strncmp (name
, "__libc_start_main", 17) == 0
13651 && (name
[17] == 0 || name
[17] == '@'))
13653 /* Allow crt1 branch to go via a toc adjusting
13654 stub. Other calls that never return could do
13655 the same, if we could detect such. */
13656 can_plt_call
= TRUE
;
13662 /* g++ as of 20130507 emits self-calls without a
13663 following nop. This is arguably wrong since we
13664 have conflicting information. On the one hand a
13665 global symbol and on the other a local call
13666 sequence, but don't error for this special case.
13667 It isn't possible to cheaply verify we have
13668 exactly such a call. Allow all calls to the same
13670 asection
*code_sec
= sec
;
13672 if (get_opd_info (sec
) != NULL
)
13674 bfd_vma off
= (relocation
+ addend
13675 - sec
->output_section
->vma
13676 - sec
->output_offset
);
13678 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13680 if (code_sec
== input_section
)
13681 can_plt_call
= TRUE
;
13686 info
->callbacks
->einfo
13687 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13688 "recompile with -fPIC\n"),
13689 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13691 bfd_set_error (bfd_error_bad_value
);
13696 && (stub_entry
->stub_type
== ppc_stub_plt_call
13697 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13698 unresolved_reloc
= FALSE
;
13701 if ((stub_entry
== NULL
13702 || stub_entry
->stub_type
== ppc_stub_long_branch
13703 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13704 && get_opd_info (sec
) != NULL
)
13706 /* The branch destination is the value of the opd entry. */
13707 bfd_vma off
= (relocation
+ addend
13708 - sec
->output_section
->vma
13709 - sec
->output_offset
);
13710 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13711 if (dest
!= (bfd_vma
) -1)
13715 reloc_dest
= DEST_OPD
;
13719 /* If the branch is out of reach we ought to have a long
13721 from
= (rel
->r_offset
13722 + input_section
->output_offset
13723 + input_section
->output_section
->vma
);
13725 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
13729 if (stub_entry
!= NULL
13730 && (stub_entry
->stub_type
== ppc_stub_long_branch
13731 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13732 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13733 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13734 || (relocation
+ addend
- from
+ max_br_offset
13735 < 2 * max_br_offset
)))
13736 /* Don't use the stub if this branch is in range. */
13739 if (stub_entry
!= NULL
)
13741 /* Munge up the value and addend so that we call the stub
13742 rather than the procedure directly. */
13743 relocation
= (stub_entry
->stub_offset
13744 + stub_entry
->stub_sec
->output_offset
13745 + stub_entry
->stub_sec
->output_section
->vma
);
13747 reloc_dest
= DEST_STUB
;
13749 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13750 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13751 && (ALWAYS_EMIT_R2SAVE
13752 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13753 && rel
+ 1 < relend
13754 && rel
[1].r_offset
== rel
->r_offset
+ 4
13755 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13763 /* Set 'a' bit. This is 0b00010 in BO field for branch
13764 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13765 for branch on CTR insns (BO == 1a00t or 1a01t). */
13766 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13767 insn
|= 0x02 << 21;
13768 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13769 insn
|= 0x08 << 21;
13775 /* Invert 'y' bit if not the default. */
13776 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13777 insn
^= 0x01 << 21;
13780 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13783 /* NOP out calls to undefined weak functions.
13784 We can thus call a weak function without first
13785 checking whether the function is defined. */
13787 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13788 && h
->elf
.dynindx
== -1
13789 && r_type
== R_PPC64_REL24
13793 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13799 /* Set `addend'. */
13804 info
->callbacks
->einfo
13805 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13806 input_bfd
, (int) r_type
, sym_name
);
13808 bfd_set_error (bfd_error_bad_value
);
13814 case R_PPC64_TLSGD
:
13815 case R_PPC64_TLSLD
:
13816 case R_PPC64_TOCSAVE
:
13817 case R_PPC64_GNU_VTINHERIT
:
13818 case R_PPC64_GNU_VTENTRY
:
13821 /* GOT16 relocations. Like an ADDR16 using the symbol's
13822 address in the GOT as relocation value instead of the
13823 symbol's value itself. Also, create a GOT entry for the
13824 symbol and put the symbol value there. */
13825 case R_PPC64_GOT_TLSGD16
:
13826 case R_PPC64_GOT_TLSGD16_LO
:
13827 case R_PPC64_GOT_TLSGD16_HI
:
13828 case R_PPC64_GOT_TLSGD16_HA
:
13829 tls_type
= TLS_TLS
| TLS_GD
;
13832 case R_PPC64_GOT_TLSLD16
:
13833 case R_PPC64_GOT_TLSLD16_LO
:
13834 case R_PPC64_GOT_TLSLD16_HI
:
13835 case R_PPC64_GOT_TLSLD16_HA
:
13836 tls_type
= TLS_TLS
| TLS_LD
;
13839 case R_PPC64_GOT_TPREL16_DS
:
13840 case R_PPC64_GOT_TPREL16_LO_DS
:
13841 case R_PPC64_GOT_TPREL16_HI
:
13842 case R_PPC64_GOT_TPREL16_HA
:
13843 tls_type
= TLS_TLS
| TLS_TPREL
;
13846 case R_PPC64_GOT_DTPREL16_DS
:
13847 case R_PPC64_GOT_DTPREL16_LO_DS
:
13848 case R_PPC64_GOT_DTPREL16_HI
:
13849 case R_PPC64_GOT_DTPREL16_HA
:
13850 tls_type
= TLS_TLS
| TLS_DTPREL
;
13853 case R_PPC64_GOT16
:
13854 case R_PPC64_GOT16_LO
:
13855 case R_PPC64_GOT16_HI
:
13856 case R_PPC64_GOT16_HA
:
13857 case R_PPC64_GOT16_DS
:
13858 case R_PPC64_GOT16_LO_DS
:
13861 /* Relocation is to the entry for this symbol in the global
13866 unsigned long indx
= 0;
13867 struct got_entry
*ent
;
13869 if (tls_type
== (TLS_TLS
| TLS_LD
)
13871 || !h
->elf
.def_dynamic
))
13872 ent
= ppc64_tlsld_got (input_bfd
);
13878 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
13879 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
13882 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
13883 /* This is actually a static link, or it is a
13884 -Bsymbolic link and the symbol is defined
13885 locally, or the symbol was forced to be local
13886 because of a version file. */
13890 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13891 indx
= h
->elf
.dynindx
;
13892 unresolved_reloc
= FALSE
;
13894 ent
= h
->elf
.got
.glist
;
13898 if (local_got_ents
== NULL
)
13900 ent
= local_got_ents
[r_symndx
];
13903 for (; ent
!= NULL
; ent
= ent
->next
)
13904 if (ent
->addend
== orig_rel
.r_addend
13905 && ent
->owner
== input_bfd
13906 && ent
->tls_type
== tls_type
)
13912 if (ent
->is_indirect
)
13913 ent
= ent
->got
.ent
;
13914 offp
= &ent
->got
.offset
;
13915 got
= ppc64_elf_tdata (ent
->owner
)->got
;
13919 /* The offset must always be a multiple of 8. We use the
13920 least significant bit to record whether we have already
13921 processed this entry. */
13923 if ((off
& 1) != 0)
13927 /* Generate relocs for the dynamic linker, except in
13928 the case of TLSLD where we'll use one entry per
13936 ? h
->elf
.type
== STT_GNU_IFUNC
13937 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
13939 relgot
= htab
->elf
.irelplt
;
13940 else if ((info
->shared
|| indx
!= 0)
13942 || (tls_type
== (TLS_TLS
| TLS_LD
)
13943 && !h
->elf
.def_dynamic
)
13944 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
13945 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
13946 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
13947 if (relgot
!= NULL
)
13949 outrel
.r_offset
= (got
->output_section
->vma
13950 + got
->output_offset
13952 outrel
.r_addend
= addend
;
13953 if (tls_type
& (TLS_LD
| TLS_GD
))
13955 outrel
.r_addend
= 0;
13956 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
13957 if (tls_type
== (TLS_TLS
| TLS_GD
))
13959 loc
= relgot
->contents
;
13960 loc
+= (relgot
->reloc_count
++
13961 * sizeof (Elf64_External_Rela
));
13962 bfd_elf64_swap_reloca_out (output_bfd
,
13964 outrel
.r_offset
+= 8;
13965 outrel
.r_addend
= addend
;
13967 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13970 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
13971 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
13972 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
13973 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
13974 else if (indx
!= 0)
13975 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
13979 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
13981 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
13983 /* Write the .got section contents for the sake
13985 loc
= got
->contents
+ off
;
13986 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
13990 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
13992 outrel
.r_addend
+= relocation
;
13993 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
13994 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
13996 loc
= relgot
->contents
;
13997 loc
+= (relgot
->reloc_count
++
13998 * sizeof (Elf64_External_Rela
));
13999 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14002 /* Init the .got section contents here if we're not
14003 emitting a reloc. */
14006 relocation
+= addend
;
14007 if (tls_type
== (TLS_TLS
| TLS_LD
))
14009 else if (tls_type
!= 0)
14011 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14012 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14013 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14015 if (tls_type
== (TLS_TLS
| TLS_GD
))
14017 bfd_put_64 (output_bfd
, relocation
,
14018 got
->contents
+ off
+ 8);
14023 bfd_put_64 (output_bfd
, relocation
,
14024 got
->contents
+ off
);
14028 if (off
>= (bfd_vma
) -2)
14031 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14032 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
14036 case R_PPC64_PLT16_HA
:
14037 case R_PPC64_PLT16_HI
:
14038 case R_PPC64_PLT16_LO
:
14039 case R_PPC64_PLT32
:
14040 case R_PPC64_PLT64
:
14041 /* Relocation is to the entry for this symbol in the
14042 procedure linkage table. */
14044 /* Resolve a PLT reloc against a local symbol directly,
14045 without using the procedure linkage table. */
14049 /* It's possible that we didn't make a PLT entry for this
14050 symbol. This happens when statically linking PIC code,
14051 or when using -Bsymbolic. Go find a match if there is a
14053 if (htab
->elf
.splt
!= NULL
)
14055 struct plt_entry
*ent
;
14056 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14057 if (ent
->plt
.offset
!= (bfd_vma
) -1
14058 && ent
->addend
== orig_rel
.r_addend
)
14060 relocation
= (htab
->elf
.splt
->output_section
->vma
14061 + htab
->elf
.splt
->output_offset
14062 + ent
->plt
.offset
);
14063 unresolved_reloc
= FALSE
;
14070 /* Relocation value is TOC base. */
14071 relocation
= TOCstart
;
14072 if (r_symndx
== STN_UNDEF
)
14073 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
14074 else if (unresolved_reloc
)
14076 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
14077 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
14079 unresolved_reloc
= TRUE
;
14082 /* TOC16 relocs. We want the offset relative to the TOC base,
14083 which is the address of the start of the TOC plus 0x8000.
14084 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14086 case R_PPC64_TOC16
:
14087 case R_PPC64_TOC16_LO
:
14088 case R_PPC64_TOC16_HI
:
14089 case R_PPC64_TOC16_DS
:
14090 case R_PPC64_TOC16_LO_DS
:
14091 case R_PPC64_TOC16_HA
:
14092 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
14095 /* Relocate against the beginning of the section. */
14096 case R_PPC64_SECTOFF
:
14097 case R_PPC64_SECTOFF_LO
:
14098 case R_PPC64_SECTOFF_HI
:
14099 case R_PPC64_SECTOFF_DS
:
14100 case R_PPC64_SECTOFF_LO_DS
:
14101 case R_PPC64_SECTOFF_HA
:
14103 addend
-= sec
->output_section
->vma
;
14106 case R_PPC64_REL16
:
14107 case R_PPC64_REL16_LO
:
14108 case R_PPC64_REL16_HI
:
14109 case R_PPC64_REL16_HA
:
14112 case R_PPC64_REL14
:
14113 case R_PPC64_REL14_BRNTAKEN
:
14114 case R_PPC64_REL14_BRTAKEN
:
14115 case R_PPC64_REL24
:
14118 case R_PPC64_TPREL16
:
14119 case R_PPC64_TPREL16_LO
:
14120 case R_PPC64_TPREL16_HI
:
14121 case R_PPC64_TPREL16_HA
:
14122 case R_PPC64_TPREL16_DS
:
14123 case R_PPC64_TPREL16_LO_DS
:
14124 case R_PPC64_TPREL16_HIGH
:
14125 case R_PPC64_TPREL16_HIGHA
:
14126 case R_PPC64_TPREL16_HIGHER
:
14127 case R_PPC64_TPREL16_HIGHERA
:
14128 case R_PPC64_TPREL16_HIGHEST
:
14129 case R_PPC64_TPREL16_HIGHESTA
:
14131 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14132 && h
->elf
.dynindx
== -1)
14134 /* Make this relocation against an undefined weak symbol
14135 resolve to zero. This is really just a tweak, since
14136 code using weak externs ought to check that they are
14137 defined before using them. */
14138 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14140 insn
= bfd_get_32 (output_bfd
, p
);
14141 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14143 bfd_put_32 (output_bfd
, insn
, p
);
14146 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14148 /* The TPREL16 relocs shouldn't really be used in shared
14149 libs as they will result in DT_TEXTREL being set, but
14150 support them anyway. */
14154 case R_PPC64_DTPREL16
:
14155 case R_PPC64_DTPREL16_LO
:
14156 case R_PPC64_DTPREL16_HI
:
14157 case R_PPC64_DTPREL16_HA
:
14158 case R_PPC64_DTPREL16_DS
:
14159 case R_PPC64_DTPREL16_LO_DS
:
14160 case R_PPC64_DTPREL16_HIGH
:
14161 case R_PPC64_DTPREL16_HIGHA
:
14162 case R_PPC64_DTPREL16_HIGHER
:
14163 case R_PPC64_DTPREL16_HIGHERA
:
14164 case R_PPC64_DTPREL16_HIGHEST
:
14165 case R_PPC64_DTPREL16_HIGHESTA
:
14166 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14169 case R_PPC64_ADDR64_LOCAL
:
14170 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14175 case R_PPC64_DTPMOD64
:
14180 case R_PPC64_TPREL64
:
14181 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14184 case R_PPC64_DTPREL64
:
14185 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14188 /* Relocations that may need to be propagated if this is a
14190 case R_PPC64_REL30
:
14191 case R_PPC64_REL32
:
14192 case R_PPC64_REL64
:
14193 case R_PPC64_ADDR14
:
14194 case R_PPC64_ADDR14_BRNTAKEN
:
14195 case R_PPC64_ADDR14_BRTAKEN
:
14196 case R_PPC64_ADDR16
:
14197 case R_PPC64_ADDR16_DS
:
14198 case R_PPC64_ADDR16_HA
:
14199 case R_PPC64_ADDR16_HI
:
14200 case R_PPC64_ADDR16_HIGH
:
14201 case R_PPC64_ADDR16_HIGHA
:
14202 case R_PPC64_ADDR16_HIGHER
:
14203 case R_PPC64_ADDR16_HIGHERA
:
14204 case R_PPC64_ADDR16_HIGHEST
:
14205 case R_PPC64_ADDR16_HIGHESTA
:
14206 case R_PPC64_ADDR16_LO
:
14207 case R_PPC64_ADDR16_LO_DS
:
14208 case R_PPC64_ADDR24
:
14209 case R_PPC64_ADDR32
:
14210 case R_PPC64_ADDR64
:
14211 case R_PPC64_UADDR16
:
14212 case R_PPC64_UADDR32
:
14213 case R_PPC64_UADDR64
:
14215 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14218 if (NO_OPD_RELOCS
&& is_opd
)
14223 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14224 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14225 && (must_be_dyn_reloc (info
, r_type
)
14226 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14227 || (ELIMINATE_COPY_RELOCS
14230 && h
->elf
.dynindx
!= -1
14231 && !h
->elf
.non_got_ref
14232 && !h
->elf
.def_regular
)
14235 ? h
->elf
.type
== STT_GNU_IFUNC
14236 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14238 bfd_boolean skip
, relocate
;
14242 /* When generating a dynamic object, these relocations
14243 are copied into the output file to be resolved at run
14249 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14250 input_section
, rel
->r_offset
);
14251 if (out_off
== (bfd_vma
) -1)
14253 else if (out_off
== (bfd_vma
) -2)
14254 skip
= TRUE
, relocate
= TRUE
;
14255 out_off
+= (input_section
->output_section
->vma
14256 + input_section
->output_offset
);
14257 outrel
.r_offset
= out_off
;
14258 outrel
.r_addend
= rel
->r_addend
;
14260 /* Optimize unaligned reloc use. */
14261 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14262 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14263 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14264 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14265 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14266 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14267 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14268 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14269 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14272 memset (&outrel
, 0, sizeof outrel
);
14273 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14275 && r_type
!= R_PPC64_TOC
)
14277 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14278 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14282 /* This symbol is local, or marked to become local,
14283 or this is an opd section reloc which must point
14284 at a local function. */
14285 outrel
.r_addend
+= relocation
;
14286 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14288 if (is_opd
&& h
!= NULL
)
14290 /* Lie about opd entries. This case occurs
14291 when building shared libraries and we
14292 reference a function in another shared
14293 lib. The same thing happens for a weak
14294 definition in an application that's
14295 overridden by a strong definition in a
14296 shared lib. (I believe this is a generic
14297 bug in binutils handling of weak syms.)
14298 In these cases we won't use the opd
14299 entry in this lib. */
14300 unresolved_reloc
= FALSE
;
14303 && r_type
== R_PPC64_ADDR64
14305 ? h
->elf
.type
== STT_GNU_IFUNC
14306 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14307 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14310 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14312 /* We need to relocate .opd contents for ld.so.
14313 Prelink also wants simple and consistent rules
14314 for relocs. This make all RELATIVE relocs have
14315 *r_offset equal to r_addend. */
14324 ? h
->elf
.type
== STT_GNU_IFUNC
14325 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14327 info
->callbacks
->einfo
14328 (_("%P: %H: %s for indirect "
14329 "function `%T' unsupported\n"),
14330 input_bfd
, input_section
, rel
->r_offset
,
14331 ppc64_elf_howto_table
[r_type
]->name
,
14335 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14337 else if (sec
== NULL
|| sec
->owner
== NULL
)
14339 bfd_set_error (bfd_error_bad_value
);
14346 osec
= sec
->output_section
;
14347 indx
= elf_section_data (osec
)->dynindx
;
14351 if ((osec
->flags
& SEC_READONLY
) == 0
14352 && htab
->elf
.data_index_section
!= NULL
)
14353 osec
= htab
->elf
.data_index_section
;
14355 osec
= htab
->elf
.text_index_section
;
14356 indx
= elf_section_data (osec
)->dynindx
;
14358 BFD_ASSERT (indx
!= 0);
14360 /* We are turning this relocation into one
14361 against a section symbol, so subtract out
14362 the output section's address but not the
14363 offset of the input section in the output
14365 outrel
.r_addend
-= osec
->vma
;
14368 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14372 sreloc
= elf_section_data (input_section
)->sreloc
;
14374 ? h
->elf
.type
== STT_GNU_IFUNC
14375 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14376 sreloc
= htab
->elf
.irelplt
;
14377 if (sreloc
== NULL
)
14380 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14383 loc
= sreloc
->contents
;
14384 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14385 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14387 /* If this reloc is against an external symbol, it will
14388 be computed at runtime, so there's no need to do
14389 anything now. However, for the sake of prelink ensure
14390 that the section contents are a known value. */
14393 unresolved_reloc
= FALSE
;
14394 /* The value chosen here is quite arbitrary as ld.so
14395 ignores section contents except for the special
14396 case of .opd where the contents might be accessed
14397 before relocation. Choose zero, as that won't
14398 cause reloc overflow. */
14401 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14402 to improve backward compatibility with older
14404 if (r_type
== R_PPC64_ADDR64
)
14405 addend
= outrel
.r_addend
;
14406 /* Adjust pc_relative relocs to have zero in *r_offset. */
14407 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14408 addend
= (input_section
->output_section
->vma
14409 + input_section
->output_offset
14416 case R_PPC64_GLOB_DAT
:
14417 case R_PPC64_JMP_SLOT
:
14418 case R_PPC64_JMP_IREL
:
14419 case R_PPC64_RELATIVE
:
14420 /* We shouldn't ever see these dynamic relocs in relocatable
14422 /* Fall through. */
14424 case R_PPC64_PLTGOT16
:
14425 case R_PPC64_PLTGOT16_DS
:
14426 case R_PPC64_PLTGOT16_HA
:
14427 case R_PPC64_PLTGOT16_HI
:
14428 case R_PPC64_PLTGOT16_LO
:
14429 case R_PPC64_PLTGOT16_LO_DS
:
14430 case R_PPC64_PLTREL32
:
14431 case R_PPC64_PLTREL64
:
14432 /* These ones haven't been implemented yet. */
14434 info
->callbacks
->einfo
14435 (_("%P: %B: %s is not supported for `%T'\n"),
14437 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14439 bfd_set_error (bfd_error_invalid_operation
);
14444 /* Multi-instruction sequences that access the TOC can be
14445 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14446 to nop; addi rb,r2,x; */
14452 case R_PPC64_GOT_TLSLD16_HI
:
14453 case R_PPC64_GOT_TLSGD16_HI
:
14454 case R_PPC64_GOT_TPREL16_HI
:
14455 case R_PPC64_GOT_DTPREL16_HI
:
14456 case R_PPC64_GOT16_HI
:
14457 case R_PPC64_TOC16_HI
:
14458 /* These relocs would only be useful if building up an
14459 offset to later add to r2, perhaps in an indexed
14460 addressing mode instruction. Don't try to optimize.
14461 Unfortunately, the possibility of someone building up an
14462 offset like this or even with the HA relocs, means that
14463 we need to check the high insn when optimizing the low
14467 case R_PPC64_GOT_TLSLD16_HA
:
14468 case R_PPC64_GOT_TLSGD16_HA
:
14469 case R_PPC64_GOT_TPREL16_HA
:
14470 case R_PPC64_GOT_DTPREL16_HA
:
14471 case R_PPC64_GOT16_HA
:
14472 case R_PPC64_TOC16_HA
:
14473 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14474 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14476 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14477 bfd_put_32 (input_bfd
, NOP
, p
);
14481 case R_PPC64_GOT_TLSLD16_LO
:
14482 case R_PPC64_GOT_TLSGD16_LO
:
14483 case R_PPC64_GOT_TPREL16_LO_DS
:
14484 case R_PPC64_GOT_DTPREL16_LO_DS
:
14485 case R_PPC64_GOT16_LO
:
14486 case R_PPC64_GOT16_LO_DS
:
14487 case R_PPC64_TOC16_LO
:
14488 case R_PPC64_TOC16_LO_DS
:
14489 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14490 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14492 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14493 insn
= bfd_get_32 (input_bfd
, p
);
14494 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14496 /* Transform addic to addi when we change reg. */
14497 insn
&= ~((0x3f << 26) | (0x1f << 16));
14498 insn
|= (14u << 26) | (2 << 16);
14502 insn
&= ~(0x1f << 16);
14505 bfd_put_32 (input_bfd
, insn
, p
);
14510 /* Do any further special processing. */
14511 howto
= ppc64_elf_howto_table
[(int) r_type
];
14517 case R_PPC64_REL16_HA
:
14518 case R_PPC64_ADDR16_HA
:
14519 case R_PPC64_ADDR16_HIGHA
:
14520 case R_PPC64_ADDR16_HIGHERA
:
14521 case R_PPC64_ADDR16_HIGHESTA
:
14522 case R_PPC64_TOC16_HA
:
14523 case R_PPC64_SECTOFF_HA
:
14524 case R_PPC64_TPREL16_HA
:
14525 case R_PPC64_TPREL16_HIGHA
:
14526 case R_PPC64_TPREL16_HIGHERA
:
14527 case R_PPC64_TPREL16_HIGHESTA
:
14528 case R_PPC64_DTPREL16_HA
:
14529 case R_PPC64_DTPREL16_HIGHA
:
14530 case R_PPC64_DTPREL16_HIGHERA
:
14531 case R_PPC64_DTPREL16_HIGHESTA
:
14532 /* It's just possible that this symbol is a weak symbol
14533 that's not actually defined anywhere. In that case,
14534 'sec' would be NULL, and we should leave the symbol
14535 alone (it will be set to zero elsewhere in the link). */
14540 case R_PPC64_GOT16_HA
:
14541 case R_PPC64_PLTGOT16_HA
:
14542 case R_PPC64_PLT16_HA
:
14543 case R_PPC64_GOT_TLSGD16_HA
:
14544 case R_PPC64_GOT_TLSLD16_HA
:
14545 case R_PPC64_GOT_TPREL16_HA
:
14546 case R_PPC64_GOT_DTPREL16_HA
:
14547 /* Add 0x10000 if sign bit in 0:15 is set.
14548 Bits 0:15 are not used. */
14552 case R_PPC64_ADDR16_DS
:
14553 case R_PPC64_ADDR16_LO_DS
:
14554 case R_PPC64_GOT16_DS
:
14555 case R_PPC64_GOT16_LO_DS
:
14556 case R_PPC64_PLT16_LO_DS
:
14557 case R_PPC64_SECTOFF_DS
:
14558 case R_PPC64_SECTOFF_LO_DS
:
14559 case R_PPC64_TOC16_DS
:
14560 case R_PPC64_TOC16_LO_DS
:
14561 case R_PPC64_PLTGOT16_DS
:
14562 case R_PPC64_PLTGOT16_LO_DS
:
14563 case R_PPC64_GOT_TPREL16_DS
:
14564 case R_PPC64_GOT_TPREL16_LO_DS
:
14565 case R_PPC64_GOT_DTPREL16_DS
:
14566 case R_PPC64_GOT_DTPREL16_LO_DS
:
14567 case R_PPC64_TPREL16_DS
:
14568 case R_PPC64_TPREL16_LO_DS
:
14569 case R_PPC64_DTPREL16_DS
:
14570 case R_PPC64_DTPREL16_LO_DS
:
14571 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14573 /* If this reloc is against an lq insn, then the value must be
14574 a multiple of 16. This is somewhat of a hack, but the
14575 "correct" way to do this by defining _DQ forms of all the
14576 _DS relocs bloats all reloc switches in this file. It
14577 doesn't seem to make much sense to use any of these relocs
14578 in data, so testing the insn should be safe. */
14579 if ((insn
& (0x3f << 26)) == (56u << 26))
14581 if (((relocation
+ addend
) & mask
) != 0)
14583 info
->callbacks
->einfo
14584 (_("%P: %H: error: %s not a multiple of %u\n"),
14585 input_bfd
, input_section
, rel
->r_offset
,
14588 bfd_set_error (bfd_error_bad_value
);
14595 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14596 because such sections are not SEC_ALLOC and thus ld.so will
14597 not process them. */
14598 if (unresolved_reloc
14599 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
14600 && h
->elf
.def_dynamic
)
14601 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
14602 rel
->r_offset
) != (bfd_vma
) -1)
14604 info
->callbacks
->einfo
14605 (_("%P: %H: unresolvable %s against `%T'\n"),
14606 input_bfd
, input_section
, rel
->r_offset
,
14608 h
->elf
.root
.root
.string
);
14612 /* 16-bit fields in insns mostly have signed values, but a
14613 few insns have 16-bit unsigned values. Really, we should
14614 have different reloc types. */
14615 if (howto
->complain_on_overflow
!= complain_overflow_dont
14616 && howto
->dst_mask
== 0xffff
14617 && (input_section
->flags
& SEC_CODE
) != 0)
14619 enum complain_overflow complain
= complain_overflow_signed
;
14621 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14622 if (howto
->rightshift
== 0
14623 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
14624 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
14625 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */
14626 || (insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
14627 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
14628 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
14629 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
14630 complain
= complain_overflow_unsigned
;
14631 if (howto
->complain_on_overflow
!= complain
)
14633 alt_howto
= *howto
;
14634 alt_howto
.complain_on_overflow
= complain
;
14635 howto
= &alt_howto
;
14639 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
14640 rel
->r_offset
, relocation
, addend
);
14642 if (r
!= bfd_reloc_ok
)
14644 char *more_info
= NULL
;
14645 const char *reloc_name
= howto
->name
;
14647 if (reloc_dest
!= DEST_NORMAL
)
14649 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14650 if (more_info
!= NULL
)
14652 strcpy (more_info
, reloc_name
);
14653 strcat (more_info
, (reloc_dest
== DEST_OPD
14654 ? " (OPD)" : " (stub)"));
14655 reloc_name
= more_info
;
14659 if (r
== bfd_reloc_overflow
)
14664 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14665 && howto
->pc_relative
)
14667 /* Assume this is a call protected by other code that
14668 detects the symbol is undefined. If this is the case,
14669 we can safely ignore the overflow. If not, the
14670 program is hosed anyway, and a little warning isn't
14676 if (!((*info
->callbacks
->reloc_overflow
)
14677 (info
, &h
->elf
.root
, sym_name
,
14678 reloc_name
, orig_rel
.r_addend
,
14679 input_bfd
, input_section
, rel
->r_offset
)))
14684 info
->callbacks
->einfo
14685 (_("%P: %H: %s against `%T': error %d\n"),
14686 input_bfd
, input_section
, rel
->r_offset
,
14687 reloc_name
, sym_name
, (int) r
);
14690 if (more_info
!= NULL
)
14695 /* If we're emitting relocations, then shortly after this function
14696 returns, reloc offsets and addends for this section will be
14697 adjusted. Worse, reloc symbol indices will be for the output
14698 file rather than the input. Save a copy of the relocs for
14699 opd_entry_value. */
14700 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14703 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14704 rel
= bfd_alloc (input_bfd
, amt
);
14705 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
14706 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
14709 memcpy (rel
, relocs
, amt
);
14714 /* Adjust the value of any local symbols in opd sections. */
14717 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14718 const char *name ATTRIBUTE_UNUSED
,
14719 Elf_Internal_Sym
*elfsym
,
14720 asection
*input_sec
,
14721 struct elf_link_hash_entry
*h
)
14723 struct _opd_sec_data
*opd
;
14730 opd
= get_opd_info (input_sec
);
14731 if (opd
== NULL
|| opd
->adjust
== NULL
)
14734 value
= elfsym
->st_value
- input_sec
->output_offset
;
14735 if (!info
->relocatable
)
14736 value
-= input_sec
->output_section
->vma
;
14738 adjust
= opd
->adjust
[value
/ 8];
14742 elfsym
->st_value
+= adjust
;
14746 /* Finish up dynamic symbol handling. We set the contents of various
14747 dynamic sections here. */
14750 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14751 struct bfd_link_info
*info
,
14752 struct elf_link_hash_entry
*h
,
14753 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14755 struct ppc_link_hash_table
*htab
;
14756 struct plt_entry
*ent
;
14757 Elf_Internal_Rela rela
;
14760 htab
= ppc_hash_table (info
);
14764 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14765 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14767 /* This symbol has an entry in the procedure linkage
14768 table. Set it up. */
14769 if (!htab
->elf
.dynamic_sections_created
14770 || h
->dynindx
== -1)
14772 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14774 && (h
->root
.type
== bfd_link_hash_defined
14775 || h
->root
.type
== bfd_link_hash_defweak
));
14776 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
14777 + htab
->elf
.iplt
->output_offset
14778 + ent
->plt
.offset
);
14780 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14782 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14783 rela
.r_addend
= (h
->root
.u
.def
.value
14784 + h
->root
.u
.def
.section
->output_offset
14785 + h
->root
.u
.def
.section
->output_section
->vma
14787 loc
= (htab
->elf
.irelplt
->contents
14788 + (htab
->elf
.irelplt
->reloc_count
++
14789 * sizeof (Elf64_External_Rela
)));
14793 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
14794 + htab
->elf
.splt
->output_offset
14795 + ent
->plt
.offset
);
14796 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14797 rela
.r_addend
= ent
->addend
;
14798 loc
= (htab
->elf
.srelplt
->contents
14799 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
14800 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
14802 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14804 if (!htab
->opd_abi
)
14806 if (!h
->def_regular
)
14808 /* Mark the symbol as undefined, rather than as
14809 defined in glink. Leave the value if there were
14810 any relocations where pointer equality matters
14811 (this is a clue for the dynamic linker, to make
14812 function pointer comparisons work between an
14813 application and shared library), otherwise set it
14815 sym
->st_shndx
= SHN_UNDEF
;
14816 if (!h
->pointer_equality_needed
)
14818 else if (!h
->ref_regular_nonweak
)
14820 /* This breaks function pointer comparisons, but
14821 that is better than breaking tests for a NULL
14822 function pointer. */
14831 /* This symbol needs a copy reloc. Set it up. */
14833 if (h
->dynindx
== -1
14834 || (h
->root
.type
!= bfd_link_hash_defined
14835 && h
->root
.type
!= bfd_link_hash_defweak
)
14836 || htab
->relbss
== NULL
)
14839 rela
.r_offset
= (h
->root
.u
.def
.value
14840 + h
->root
.u
.def
.section
->output_section
->vma
14841 + h
->root
.u
.def
.section
->output_offset
);
14842 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
14844 loc
= htab
->relbss
->contents
;
14845 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14846 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14852 /* Used to decide how to sort relocs in an optimal manner for the
14853 dynamic linker, before writing them out. */
14855 static enum elf_reloc_type_class
14856 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
14857 const asection
*rel_sec
,
14858 const Elf_Internal_Rela
*rela
)
14860 enum elf_ppc64_reloc_type r_type
;
14861 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
14863 if (rel_sec
== htab
->elf
.irelplt
)
14864 return reloc_class_ifunc
;
14866 r_type
= ELF64_R_TYPE (rela
->r_info
);
14869 case R_PPC64_RELATIVE
:
14870 return reloc_class_relative
;
14871 case R_PPC64_JMP_SLOT
:
14872 return reloc_class_plt
;
14874 return reloc_class_copy
;
14876 return reloc_class_normal
;
14880 /* Finish up the dynamic sections. */
14883 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
14884 struct bfd_link_info
*info
)
14886 struct ppc_link_hash_table
*htab
;
14890 htab
= ppc_hash_table (info
);
14894 dynobj
= htab
->elf
.dynobj
;
14895 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
14897 if (htab
->elf
.dynamic_sections_created
)
14899 Elf64_External_Dyn
*dyncon
, *dynconend
;
14901 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
14904 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
14905 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
14906 for (; dyncon
< dynconend
; dyncon
++)
14908 Elf_Internal_Dyn dyn
;
14911 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
14918 case DT_PPC64_GLINK
:
14920 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14921 /* We stupidly defined DT_PPC64_GLINK to be the start
14922 of glink rather than the first entry point, which is
14923 what ld.so needs, and now have a bigger stub to
14924 support automatic multiple TOCs. */
14925 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
14929 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14932 dyn
.d_un
.d_ptr
= s
->vma
;
14936 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
14937 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
14940 case DT_PPC64_OPDSZ
:
14941 s
= bfd_get_section_by_name (output_bfd
, ".opd");
14944 dyn
.d_un
.d_val
= s
->size
;
14948 s
= htab
->elf
.splt
;
14949 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14953 s
= htab
->elf
.srelplt
;
14954 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
14958 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
14962 /* Don't count procedure linkage table relocs in the
14963 overall reloc count. */
14964 s
= htab
->elf
.srelplt
;
14967 dyn
.d_un
.d_val
-= s
->size
;
14971 /* We may not be using the standard ELF linker script.
14972 If .rela.plt is the first .rela section, we adjust
14973 DT_RELA to not include it. */
14974 s
= htab
->elf
.srelplt
;
14977 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
14979 dyn
.d_un
.d_ptr
+= s
->size
;
14983 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
14987 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
14989 /* Fill in the first entry in the global offset table.
14990 We use it to hold the link-time TOCbase. */
14991 bfd_put_64 (output_bfd
,
14992 elf_gp (output_bfd
) + TOC_BASE_OFF
,
14993 htab
->elf
.sgot
->contents
);
14995 /* Set .got entry size. */
14996 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
14999 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15001 /* Set .plt entry size. */
15002 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15003 = PLT_ENTRY_SIZE (htab
);
15006 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15007 brlt ourselves if emitrelocations. */
15008 if (htab
->brlt
!= NULL
15009 && htab
->brlt
->reloc_count
!= 0
15010 && !_bfd_elf_link_output_relocs (output_bfd
,
15012 elf_section_data (htab
->brlt
)->rela
.hdr
,
15013 elf_section_data (htab
->brlt
)->relocs
,
15017 if (htab
->glink
!= NULL
15018 && htab
->glink
->reloc_count
!= 0
15019 && !_bfd_elf_link_output_relocs (output_bfd
,
15021 elf_section_data (htab
->glink
)->rela
.hdr
,
15022 elf_section_data (htab
->glink
)->relocs
,
15027 if (htab
->glink_eh_frame
!= NULL
15028 && htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15029 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15030 htab
->glink_eh_frame
,
15031 htab
->glink_eh_frame
->contents
))
15034 /* We need to handle writing out multiple GOT sections ourselves,
15035 since we didn't add them to DYNOBJ. We know dynobj is the first
15037 while ((dynobj
= dynobj
->link_next
) != NULL
)
15041 if (!is_ppc64_elf (dynobj
))
15044 s
= ppc64_elf_tdata (dynobj
)->got
;
15047 && s
->output_section
!= bfd_abs_section_ptr
15048 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15049 s
->contents
, s
->output_offset
,
15052 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15055 && s
->output_section
!= bfd_abs_section_ptr
15056 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15057 s
->contents
, s
->output_offset
,
15065 #include "elf64-target.h"
15067 /* FreeBSD support */
15069 #undef TARGET_LITTLE_SYM
15070 #undef TARGET_LITTLE_NAME
15072 #undef TARGET_BIG_SYM
15073 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
15074 #undef TARGET_BIG_NAME
15075 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15078 #define ELF_OSABI ELFOSABI_FREEBSD
15081 #define elf64_bed elf64_powerpc_fbsd_bed
15083 #include "elf64-target.h"