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 powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_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_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
142 /* Offset of tp and dtp pointers from start of TLS block. */
143 #define TP_OFFSET 0x7000
144 #define DTP_OFFSET 0x8000
146 /* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
148 insert an addi to adjust r11. */
149 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
150 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
155 #define BCTR 0x4e800420 /* bctr */
157 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
158 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
161 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
164 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166 #define BNECTR 0x4ca20420 /* bnectr+ */
167 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
169 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
170 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
173 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
175 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
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
240 abiversion (bfd
*abfd
)
242 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
246 set_abiversion (bfd
*abfd
, int ver
)
248 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
249 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
252 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
254 /* Relocation HOWTO's. */
255 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
257 static reloc_howto_type ppc64_elf_howto_raw
[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE
, /* type */
261 2, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_dont
, /* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_PPC64_NONE", /* name */
268 FALSE
, /* partial_inplace */
271 FALSE
), /* pcrel_offset */
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32
, /* type */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE
, /* pc_relative */
280 complain_overflow_bitfield
, /* complain_on_overflow */
281 bfd_elf_generic_reloc
, /* special_function */
282 "R_PPC64_ADDR32", /* name */
283 FALSE
, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 FALSE
), /* pcrel_offset */
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24
, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE
, /* pc_relative */
296 complain_overflow_bitfield
, /* complain_on_overflow */
297 bfd_elf_generic_reloc
, /* special_function */
298 "R_PPC64_ADDR24", /* name */
299 FALSE
, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 FALSE
), /* pcrel_offset */
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16
, /* type */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_bitfield
, /* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_PPC64_ADDR16", /* name */
314 FALSE
, /* partial_inplace */
316 0xffff, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO
, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_dont
,/* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
329 FALSE
, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI
, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_signed
, /* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
344 FALSE
, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA
, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE
, /* pc_relative */
357 complain_overflow_signed
, /* complain_on_overflow */
358 ppc64_elf_ha_reloc
, /* special_function */
359 "R_PPC64_ADDR16_HA", /* name */
360 FALSE
, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE
), /* pcrel_offset */
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14
, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE
, /* pc_relative */
373 complain_overflow_signed
, /* complain_on_overflow */
374 ppc64_elf_branch_reloc
, /* special_function */
375 "R_PPC64_ADDR14", /* name */
376 FALSE
, /* partial_inplace */
378 0x0000fffc, /* dst_mask */
379 FALSE
), /* pcrel_offset */
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE
, /* pc_relative */
390 complain_overflow_signed
, /* complain_on_overflow */
391 ppc64_elf_brtaken_reloc
, /* special_function */
392 "R_PPC64_ADDR14_BRTAKEN",/* name */
393 FALSE
, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE
), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_signed
, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc
, /* special_function */
409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
410 FALSE
, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE
), /* pcrel_offset */
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24
, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 TRUE
, /* pc_relative */
422 complain_overflow_signed
, /* complain_on_overflow */
423 ppc64_elf_branch_reloc
, /* special_function */
424 "R_PPC64_REL24", /* name */
425 FALSE
, /* partial_inplace */
427 0x03fffffc, /* dst_mask */
428 TRUE
), /* pcrel_offset */
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14
, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE
, /* pc_relative */
437 complain_overflow_signed
, /* complain_on_overflow */
438 ppc64_elf_branch_reloc
, /* special_function */
439 "R_PPC64_REL14", /* name */
440 FALSE
, /* partial_inplace */
442 0x0000fffc, /* dst_mask */
443 TRUE
), /* pcrel_offset */
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
448 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE
, /* pc_relative */
454 complain_overflow_signed
, /* complain_on_overflow */
455 ppc64_elf_brtaken_reloc
, /* special_function */
456 "R_PPC64_REL14_BRTAKEN", /* name */
457 FALSE
, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE
), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
465 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE
, /* pc_relative */
471 complain_overflow_signed
, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc
, /* special_function */
473 "R_PPC64_REL14_BRNTAKEN",/* name */
474 FALSE
, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE
), /* pcrel_offset */
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
481 HOWTO (R_PPC64_GOT16
, /* type */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE
, /* pc_relative */
487 complain_overflow_signed
, /* complain_on_overflow */
488 ppc64_elf_unhandled_reloc
, /* special_function */
489 "R_PPC64_GOT16", /* name */
490 FALSE
, /* partial_inplace */
492 0xffff, /* dst_mask */
493 FALSE
), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
497 HOWTO (R_PPC64_GOT16_LO
, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE
, /* pc_relative */
503 complain_overflow_dont
, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc
, /* special_function */
505 "R_PPC64_GOT16_LO", /* name */
506 FALSE
, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE
), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_HI
, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_signed
,/* complain_on_overflow */
520 ppc64_elf_unhandled_reloc
, /* special_function */
521 "R_PPC64_GOT16_HI", /* name */
522 FALSE
, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE
), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HA
, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE
, /* pc_relative */
535 complain_overflow_signed
,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc
, /* special_function */
537 "R_PPC64_GOT16_HA", /* name */
538 FALSE
, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE
), /* pcrel_offset */
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY
, /* type */
550 0, /* this one is variable size */
552 FALSE
, /* pc_relative */
554 complain_overflow_dont
, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc
, /* special_function */
556 "R_PPC64_COPY", /* name */
557 FALSE
, /* partial_inplace */
560 FALSE
), /* pcrel_offset */
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
564 HOWTO (R_PPC64_GLOB_DAT
, /* type */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
568 FALSE
, /* pc_relative */
570 complain_overflow_dont
, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc
, /* special_function */
572 "R_PPC64_GLOB_DAT", /* name */
573 FALSE
, /* partial_inplace */
575 ONES (64), /* dst_mask */
576 FALSE
), /* pcrel_offset */
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT
, /* type */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_dont
, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc
, /* special_function */
588 "R_PPC64_JMP_SLOT", /* name */
589 FALSE
, /* partial_inplace */
592 FALSE
), /* pcrel_offset */
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
597 HOWTO (R_PPC64_RELATIVE
, /* type */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
601 FALSE
, /* pc_relative */
603 complain_overflow_dont
, /* complain_on_overflow */
604 bfd_elf_generic_reloc
, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
606 FALSE
, /* partial_inplace */
608 ONES (64), /* dst_mask */
609 FALSE
), /* pcrel_offset */
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32
, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE
, /* pc_relative */
618 complain_overflow_bitfield
, /* complain_on_overflow */
619 bfd_elf_generic_reloc
, /* special_function */
620 "R_PPC64_UADDR32", /* name */
621 FALSE
, /* partial_inplace */
623 0xffffffff, /* dst_mask */
624 FALSE
), /* pcrel_offset */
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16
, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE
, /* pc_relative */
633 complain_overflow_bitfield
, /* complain_on_overflow */
634 bfd_elf_generic_reloc
, /* special_function */
635 "R_PPC64_UADDR16", /* name */
636 FALSE
, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE
), /* pcrel_offset */
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32
, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE
, /* pc_relative */
648 complain_overflow_signed
, /* complain_on_overflow */
649 bfd_elf_generic_reloc
, /* special_function */
650 "R_PPC64_REL32", /* name */
651 FALSE
, /* partial_inplace */
653 0xffffffff, /* dst_mask */
654 TRUE
), /* pcrel_offset */
656 /* 32-bit relocation to the symbol's procedure linkage table. */
657 HOWTO (R_PPC64_PLT32
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_bitfield
, /* complain_on_overflow */
664 ppc64_elf_unhandled_reloc
, /* special_function */
665 "R_PPC64_PLT32", /* name */
666 FALSE
, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 FALSE
), /* pcrel_offset */
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32
, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 TRUE
, /* pc_relative */
679 complain_overflow_signed
, /* complain_on_overflow */
680 bfd_elf_generic_reloc
, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
682 FALSE
, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 TRUE
), /* pcrel_offset */
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
689 HOWTO (R_PPC64_PLT16_LO
, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE
, /* pc_relative */
695 complain_overflow_dont
, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc
, /* special_function */
697 "R_PPC64_PLT16_LO", /* name */
698 FALSE
, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE
), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_HI
, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE
, /* pc_relative */
711 complain_overflow_signed
, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc
, /* special_function */
713 "R_PPC64_PLT16_HI", /* name */
714 FALSE
, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE
), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HA
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_signed
, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc
, /* special_function */
729 "R_PPC64_PLT16_HA", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* 16-bit section relative relocation. */
736 HOWTO (R_PPC64_SECTOFF
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_signed
, /* complain_on_overflow */
743 ppc64_elf_sectoff_reloc
, /* special_function */
744 "R_PPC64_SECTOFF", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
751 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_dont
, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc
, /* special_function */
759 "R_PPC64_SECTOFF_LO", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_signed
, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc
, /* special_function */
774 "R_PPC64_SECTOFF_HI", /* name */
775 FALSE
, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE
), /* pcrel_offset */
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE
, /* pc_relative */
787 complain_overflow_signed
, /* complain_on_overflow */
788 ppc64_elf_sectoff_ha_reloc
, /* special_function */
789 "R_PPC64_SECTOFF_HA", /* name */
790 FALSE
, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE
), /* pcrel_offset */
795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30
, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE
, /* pc_relative */
802 complain_overflow_dont
, /* complain_on_overflow */
803 bfd_elf_generic_reloc
, /* special_function */
804 "R_PPC64_REL30", /* name */
805 FALSE
, /* partial_inplace */
807 0xfffffffc, /* dst_mask */
808 TRUE
), /* pcrel_offset */
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64
, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 FALSE
, /* pc_relative */
819 complain_overflow_dont
, /* complain_on_overflow */
820 bfd_elf_generic_reloc
, /* special_function */
821 "R_PPC64_ADDR64", /* name */
822 FALSE
, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 FALSE
), /* pcrel_offset */
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE
, /* pc_relative */
834 complain_overflow_dont
, /* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
837 FALSE
, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE
), /* pcrel_offset */
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE
, /* pc_relative */
850 complain_overflow_dont
, /* complain_on_overflow */
851 ppc64_elf_ha_reloc
, /* special_function */
852 "R_PPC64_ADDR16_HIGHERA", /* name */
853 FALSE
, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE
, /* pc_relative */
865 complain_overflow_dont
, /* complain_on_overflow */
866 bfd_elf_generic_reloc
, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
868 FALSE
, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE
), /* pcrel_offset */
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE
, /* pc_relative */
881 complain_overflow_dont
, /* complain_on_overflow */
882 ppc64_elf_ha_reloc
, /* special_function */
883 "R_PPC64_ADDR16_HIGHESTA", /* name */
884 FALSE
, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE
), /* pcrel_offset */
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64
, /* type */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 bfd_elf_generic_reloc
, /* special_function */
898 "R_PPC64_UADDR64", /* name */
899 FALSE
, /* partial_inplace */
901 ONES (64), /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64
, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 TRUE
, /* pc_relative */
911 complain_overflow_dont
, /* complain_on_overflow */
912 bfd_elf_generic_reloc
, /* special_function */
913 "R_PPC64_REL64", /* name */
914 FALSE
, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 TRUE
), /* pcrel_offset */
919 /* 64-bit relocation to the symbol's procedure linkage table. */
920 HOWTO (R_PPC64_PLT64
, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 FALSE
, /* pc_relative */
926 complain_overflow_dont
, /* complain_on_overflow */
927 ppc64_elf_unhandled_reloc
, /* special_function */
928 "R_PPC64_PLT64", /* name */
929 FALSE
, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 FALSE
), /* pcrel_offset */
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64
, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 TRUE
, /* pc_relative */
943 complain_overflow_dont
, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc
, /* special_function */
945 "R_PPC64_PLTREL64", /* name */
946 FALSE
, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 TRUE
), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation. */
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16
, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE
, /* pc_relative */
960 complain_overflow_signed
, /* complain_on_overflow */
961 ppc64_elf_toc_reloc
, /* special_function */
962 "R_PPC64_TOC16", /* name */
963 FALSE
, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE
), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation without overflow. */
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO
, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_dont
, /* complain_on_overflow */
978 ppc64_elf_toc_reloc
, /* special_function */
979 "R_PPC64_TOC16_LO", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation, high 16 bits. */
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI
, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE
, /* pc_relative */
994 complain_overflow_signed
, /* complain_on_overflow */
995 ppc64_elf_toc_reloc
, /* special_function */
996 "R_PPC64_TOC16_HI", /* name */
997 FALSE
, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA
, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE
, /* pc_relative */
1013 complain_overflow_signed
, /* complain_on_overflow */
1014 ppc64_elf_toc_ha_reloc
, /* special_function */
1015 "R_PPC64_TOC16_HA", /* name */
1016 FALSE
, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE
), /* pcrel_offset */
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC
, /* type */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1028 FALSE
, /* pc_relative */
1030 complain_overflow_dont
, /* complain_on_overflow */
1031 ppc64_elf_toc64_reloc
, /* special_function */
1032 "R_PPC64_TOC", /* name */
1033 FALSE
, /* partial_inplace */
1035 ONES (64), /* dst_mask */
1036 FALSE
), /* pcrel_offset */
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16
, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE
, /* pc_relative */
1053 complain_overflow_signed
, /* complain_on_overflow */
1054 ppc64_elf_unhandled_reloc
, /* special_function */
1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE
, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE
), /* pcrel_offset */
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE
, /* pc_relative */
1069 complain_overflow_dont
, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc
, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE
, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE
), /* pcrel_offset */
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE
, /* pc_relative */
1085 complain_overflow_signed
, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc
, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE
, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE
), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE
, /* pc_relative */
1103 complain_overflow_signed
, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc
, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE
, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE
), /* pcrel_offset */
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_signed
, /* complain_on_overflow */
1119 bfd_elf_generic_reloc
, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE
, /* partial_inplace */
1123 0xfffc, /* dst_mask */
1124 FALSE
), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_dont
,/* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE
, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS
, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE
, /* pc_relative */
1148 complain_overflow_signed
, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc
, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE
, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE
), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE
, /* pc_relative */
1163 complain_overflow_dont
, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc
, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE
, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE
), /* pcrel_offset */
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE
, /* pc_relative */
1178 complain_overflow_dont
, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc
, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE
, /* pc_relative */
1193 complain_overflow_signed
, /* complain_on_overflow */
1194 ppc64_elf_sectoff_reloc
, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE
, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE
), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_dont
, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc
, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE
, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS
, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE
, /* pc_relative */
1223 complain_overflow_signed
, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc
, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE
, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE
), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE
, /* pc_relative */
1238 complain_overflow_dont
, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc
, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE
, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE
), /* pcrel_offset */
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1248 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE
, /* pc_relative */
1254 complain_overflow_signed
, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc
, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE
, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE
), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE
, /* pc_relative */
1270 complain_overflow_dont
, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc
, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE
, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE
), /* pcrel_offset */
1278 /* Marker relocs for TLS. */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 bfd_elf_generic_reloc
, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE
, /* partial_inplace */
1291 FALSE
), /* pcrel_offset */
1293 HOWTO (R_PPC64_TLSGD
,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE
, /* pc_relative */
1299 complain_overflow_dont
, /* complain_on_overflow */
1300 bfd_elf_generic_reloc
, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE
, /* partial_inplace */
1305 FALSE
), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSLD
,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE
, /* pc_relative */
1313 complain_overflow_dont
, /* complain_on_overflow */
1314 bfd_elf_generic_reloc
, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE
, /* partial_inplace */
1319 FALSE
), /* pcrel_offset */
1321 HOWTO (R_PPC64_TOCSAVE
,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE
, /* pc_relative */
1327 complain_overflow_dont
, /* complain_on_overflow */
1328 bfd_elf_generic_reloc
, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE
, /* partial_inplace */
1333 FALSE
), /* pcrel_offset */
1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64
,
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE
, /* pc_relative */
1343 complain_overflow_dont
, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc
, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE
, /* partial_inplace */
1348 ONES (64), /* dst_mask */
1349 FALSE
), /* pcrel_offset */
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64
,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE
, /* pc_relative */
1360 complain_overflow_dont
, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc
, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE
, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE
), /* pcrel_offset */
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16
,
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_signed
, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE
, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO
,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_dont
, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc
, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE
, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI
,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE
, /* pc_relative */
1405 complain_overflow_signed
, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc
, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE
, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE
), /* pcrel_offset */
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA
,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE
, /* pc_relative */
1420 complain_overflow_signed
, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc
, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE
, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE
), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_dont
, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc
, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE
, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE
, /* pc_relative */
1450 complain_overflow_dont
, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc
, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE
, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE
), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE
, /* pc_relative */
1465 complain_overflow_dont
, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc
, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE
, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE
, /* pc_relative */
1480 complain_overflow_dont
, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc
, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE
, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE
), /* pcrel_offset */
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS
,
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_signed
, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc
, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE
, /* partial_inplace */
1500 0xfffc, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_dont
, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc
, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE
, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64
,
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE
, /* pc_relative */
1526 complain_overflow_dont
, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc
, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE
, /* partial_inplace */
1531 ONES (64), /* dst_mask */
1532 FALSE
), /* pcrel_offset */
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16
,
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE
, /* pc_relative */
1541 complain_overflow_signed
, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc
, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE
, /* partial_inplace */
1546 0xffff, /* dst_mask */
1547 FALSE
), /* pcrel_offset */
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO
,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_dont
, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc
, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE
, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE
), /* pcrel_offset */
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI
,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_signed
, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc
, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE
, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE
), /* pcrel_offset */
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA
,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE
, /* pc_relative */
1586 complain_overflow_signed
, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc
, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE
, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE
), /* pcrel_offset */
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER
,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_dont
, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc
, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE
, /* pc_relative */
1616 complain_overflow_dont
, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc
, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE
, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc
, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE
, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE
, /* pc_relative */
1646 complain_overflow_dont
, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc
, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE
, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE
), /* pcrel_offset */
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS
,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_signed
, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc
, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE
, /* partial_inplace */
1666 0xfffc, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS
,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_dont
, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc
, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE
, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16
,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE
, /* pc_relative */
1693 complain_overflow_signed
, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc
, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
1696 FALSE
, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE
), /* pcrel_offset */
1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE
, /* pc_relative */
1708 complain_overflow_dont
, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc
, /* special_function */
1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
1711 FALSE
, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE
), /* pcrel_offset */
1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE
, /* pc_relative */
1723 complain_overflow_signed
, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc
, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
1726 FALSE
, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE
), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE
, /* pc_relative */
1738 complain_overflow_signed
, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc
, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
1741 FALSE
, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE
), /* pcrel_offset */
1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16
,
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE
, /* pc_relative */
1755 complain_overflow_signed
, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc
, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
1758 FALSE
, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE
), /* pcrel_offset */
1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_dont
, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc
, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
1773 FALSE
, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1780 16, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_signed
, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE
, /* pc_relative */
1800 complain_overflow_signed
, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc
, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
1803 FALSE
, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE
), /* pcrel_offset */
1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE
, /* pc_relative */
1816 complain_overflow_signed
, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc
, /* special_function */
1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
1819 FALSE
, /* partial_inplace */
1821 0xfffc, /* dst_mask */
1822 FALSE
), /* pcrel_offset */
1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE
, /* pc_relative */
1831 complain_overflow_dont
, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc
, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1834 FALSE
, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE
), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1841 16, /* rightshift */
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE
, /* pc_relative */
1846 complain_overflow_signed
, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc
, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
1849 FALSE
, /* partial_inplace */
1851 0xffff, /* dst_mask */
1852 FALSE
), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE
, /* pc_relative */
1861 complain_overflow_signed
, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc
, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE
, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE
), /* pcrel_offset */
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE
, /* pc_relative */
1877 complain_overflow_signed
, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc
, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
1880 FALSE
, /* partial_inplace */
1882 0xfffc, /* dst_mask */
1883 FALSE
), /* pcrel_offset */
1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE
, /* pc_relative */
1892 complain_overflow_dont
, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc
, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1895 FALSE
, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE
), /* pcrel_offset */
1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1902 16, /* rightshift */
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE
, /* pc_relative */
1907 complain_overflow_signed
, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc
, /* special_function */
1909 "R_PPC64_GOT_TPREL16_HI", /* name */
1910 FALSE
, /* partial_inplace */
1912 0xffff, /* dst_mask */
1913 FALSE
), /* pcrel_offset */
1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE
, /* pc_relative */
1922 complain_overflow_signed
, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc
, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HA", /* name */
1925 FALSE
, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE
), /* pcrel_offset */
1930 HOWTO (R_PPC64_JMP_IREL
, /* type */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1934 FALSE
, /* pc_relative */
1936 complain_overflow_dont
, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc
, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE
, /* partial_inplace */
1942 FALSE
), /* pcrel_offset */
1944 HOWTO (R_PPC64_IRELATIVE
, /* type */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE
, /* pc_relative */
1950 complain_overflow_dont
, /* complain_on_overflow */
1951 bfd_elf_generic_reloc
, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE
, /* partial_inplace */
1955 ONES (64), /* dst_mask */
1956 FALSE
), /* pcrel_offset */
1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16
, /* type */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1963 TRUE
, /* pc_relative */
1965 complain_overflow_signed
, /* complain_on_overflow */
1966 bfd_elf_generic_reloc
, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE
, /* partial_inplace */
1970 0xffff, /* dst_mask */
1971 TRUE
), /* pcrel_offset */
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO
, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE
, /* pc_relative */
1980 complain_overflow_dont
,/* complain_on_overflow */
1981 bfd_elf_generic_reloc
, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE
, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE
), /* pcrel_offset */
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI
, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE
, /* pc_relative */
1995 complain_overflow_signed
, /* complain_on_overflow */
1996 bfd_elf_generic_reloc
, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE
, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE
), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA
, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE
, /* pc_relative */
2011 complain_overflow_signed
, /* complain_on_overflow */
2012 ppc64_elf_ha_reloc
, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE
, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE
), /* pcrel_offset */
2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE
, /* pc_relative */
2026 complain_overflow_dont
, /* complain_on_overflow */
2027 bfd_elf_generic_reloc
, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE
, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 FALSE
), /* pcrel_offset */
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2039 FALSE
, /* pc_relative */
2041 complain_overflow_dont
, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc
, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE
, /* partial_inplace */
2046 0xffff, /* dst_mask */
2047 FALSE
), /* pcrel_offset */
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH
,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE
, /* pc_relative */
2056 complain_overflow_dont
, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc
, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE
, /* partial_inplace */
2061 0xffff, /* dst_mask */
2062 FALSE
), /* pcrel_offset */
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE
, /* pc_relative */
2071 complain_overflow_dont
, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc
, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE
, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE
), /* pcrel_offset */
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH
,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE
, /* pc_relative */
2086 complain_overflow_dont
, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc
, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE
, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE
), /* pcrel_offset */
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA
,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE
, /* pc_relative */
2101 complain_overflow_dont
, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc
, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE
, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE
), /* pcrel_offset */
2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2114 FALSE
, /* pc_relative */
2116 complain_overflow_dont
, /* complain_on_overflow */
2117 bfd_elf_generic_reloc
, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE
, /* partial_inplace */
2121 ONES (64), /* dst_mask */
2122 FALSE
), /* pcrel_offset */
2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE
, /* pc_relative */
2131 complain_overflow_dont
, /* complain_on_overflow */
2132 NULL
, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
2134 FALSE
, /* partial_inplace */
2137 FALSE
), /* pcrel_offset */
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE
, /* pc_relative */
2146 complain_overflow_dont
, /* complain_on_overflow */
2147 NULL
, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
2149 FALSE
, /* partial_inplace */
2152 FALSE
), /* pcrel_offset */
2156 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2160 ppc_howto_init (void)
2162 unsigned int i
, type
;
2165 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2168 type
= ppc64_elf_howto_raw
[i
].type
;
2169 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2170 / sizeof (ppc64_elf_howto_table
[0])));
2171 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2175 static reloc_howto_type
*
2176 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2177 bfd_reloc_code_real_type code
)
2179 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2181 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2182 /* Initialize howto table if needed. */
2190 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2192 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2194 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2196 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2198 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2200 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2202 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2204 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2206 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2208 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2210 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2212 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2214 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2216 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2218 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2220 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2222 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2224 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2226 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2228 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2230 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2232 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2234 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2236 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2238 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2240 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2242 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2244 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2246 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2248 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2250 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2252 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2254 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2256 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2258 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2260 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2262 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2264 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2266 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2268 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2270 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2272 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2274 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2276 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2278 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2280 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2282 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2286 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2288 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2290 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2292 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2294 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2296 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2298 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2300 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2304 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2306 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2308 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2312 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2314 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2316 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2318 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2320 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2322 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2324 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2326 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2328 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2330 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2332 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2334 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2336 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2338 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2340 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2342 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2346 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2348 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2356 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2364 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2372 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2380 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2392 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2404 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2406 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2408 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2410 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2412 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2414 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2416 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2420 return ppc64_elf_howto_table
[r
];
2423 static reloc_howto_type
*
2424 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2430 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2432 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2433 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2434 return &ppc64_elf_howto_raw
[i
];
2439 /* Set the howto pointer for a PowerPC ELF reloc. */
2442 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2443 Elf_Internal_Rela
*dst
)
2447 /* Initialize howto table if needed. */
2448 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2451 type
= ELF64_R_TYPE (dst
->r_info
);
2452 if (type
>= (sizeof (ppc64_elf_howto_table
)
2453 / sizeof (ppc64_elf_howto_table
[0])))
2455 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2457 type
= R_PPC64_NONE
;
2459 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2462 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2464 static bfd_reloc_status_type
2465 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2466 void *data
, asection
*input_section
,
2467 bfd
*output_bfd
, char **error_message
)
2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2472 if (output_bfd
!= NULL
)
2473 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2474 input_section
, output_bfd
, error_message
);
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2479 reloc_entry
->addend
+= 0x8000;
2480 return bfd_reloc_continue
;
2483 static bfd_reloc_status_type
2484 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2485 void *data
, asection
*input_section
,
2486 bfd
*output_bfd
, char **error_message
)
2488 if (output_bfd
!= NULL
)
2489 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2490 input_section
, output_bfd
, error_message
);
2492 if (strcmp (symbol
->section
->name
, ".opd") == 0
2493 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2495 bfd_vma dest
= opd_entry_value (symbol
->section
,
2496 symbol
->value
+ reloc_entry
->addend
,
2498 if (dest
!= (bfd_vma
) -1)
2499 reloc_entry
->addend
= dest
- (symbol
->value
2500 + symbol
->section
->output_section
->vma
2501 + symbol
->section
->output_offset
);
2505 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2507 if (symbol
->section
->owner
!= abfd
2508 && abiversion (symbol
->section
->owner
) >= 2)
2512 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2514 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2516 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2518 elfsym
= (elf_symbol_type
*) symdef
;
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2526 return bfd_reloc_continue
;
2529 static bfd_reloc_status_type
2530 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2531 void *data
, asection
*input_section
,
2532 bfd
*output_bfd
, char **error_message
)
2535 enum elf_ppc64_reloc_type r_type
;
2536 bfd_size_type octets
;
2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2
= TRUE
;
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2543 if (output_bfd
!= NULL
)
2544 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2545 input_section
, output_bfd
, error_message
);
2547 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2548 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2549 insn
&= ~(0x01 << 21);
2550 r_type
= reloc_entry
->howto
->type
;
2551 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2552 || r_type
== R_PPC64_REL14_BRTAKEN
)
2553 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2562 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2572 if (!bfd_is_com_section (symbol
->section
))
2573 target
= symbol
->value
;
2574 target
+= symbol
->section
->output_section
->vma
;
2575 target
+= symbol
->section
->output_offset
;
2576 target
+= reloc_entry
->addend
;
2578 from
= (reloc_entry
->address
2579 + input_section
->output_offset
2580 + input_section
->output_section
->vma
);
2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma
) (target
- from
) < 0)
2586 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2588 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2589 input_section
, output_bfd
, error_message
);
2592 static bfd_reloc_status_type
2593 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2594 void *data
, asection
*input_section
,
2595 bfd
*output_bfd
, char **error_message
)
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2600 if (output_bfd
!= NULL
)
2601 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2602 input_section
, output_bfd
, error_message
);
2604 /* Subtract the symbol section base address. */
2605 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2606 return bfd_reloc_continue
;
2609 static bfd_reloc_status_type
2610 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2611 void *data
, asection
*input_section
,
2612 bfd
*output_bfd
, char **error_message
)
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2617 if (output_bfd
!= NULL
)
2618 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2619 input_section
, output_bfd
, error_message
);
2621 /* Subtract the symbol section base address. */
2622 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry
->addend
+= 0x8000;
2626 return bfd_reloc_continue
;
2629 static bfd_reloc_status_type
2630 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2631 void *data
, asection
*input_section
,
2632 bfd
*output_bfd
, char **error_message
)
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd
!= NULL
)
2640 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2641 input_section
, output_bfd
, error_message
);
2643 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2645 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2647 /* Subtract the TOC base address. */
2648 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2649 return bfd_reloc_continue
;
2652 static bfd_reloc_status_type
2653 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2654 void *data
, asection
*input_section
,
2655 bfd
*output_bfd
, char **error_message
)
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2662 if (output_bfd
!= NULL
)
2663 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2664 input_section
, output_bfd
, error_message
);
2666 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2668 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2670 /* Subtract the TOC base address. */
2671 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry
->addend
+= 0x8000;
2675 return bfd_reloc_continue
;
2678 static bfd_reloc_status_type
2679 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2680 void *data
, asection
*input_section
,
2681 bfd
*output_bfd
, char **error_message
)
2684 bfd_size_type octets
;
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd
!= NULL
)
2690 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2691 input_section
, output_bfd
, error_message
);
2693 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2695 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2697 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2698 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2699 return bfd_reloc_ok
;
2702 static bfd_reloc_status_type
2703 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2704 void *data
, asection
*input_section
,
2705 bfd
*output_bfd
, char **error_message
)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd
!= NULL
)
2711 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2712 input_section
, output_bfd
, error_message
);
2714 if (error_message
!= NULL
)
2716 static char buf
[60];
2717 sprintf (buf
, "generic linker can't handle %s",
2718 reloc_entry
->howto
->name
);
2719 *error_message
= buf
;
2721 return bfd_reloc_dangerous
;
2724 /* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2728 struct got_entry
*next
;
2730 /* The symbol addend that we'll be placing in the GOT. */
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2739 Point to the BFD owning this GOT entry. */
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
2744 unsigned char tls_type
;
2746 /* Non-zero if got.ent points to real entry. */
2747 unsigned char is_indirect
;
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 bfd_signed_vma refcount
;
2754 struct got_entry
*ent
;
2758 /* The same for PLT. */
2761 struct plt_entry
*next
;
2767 bfd_signed_vma refcount
;
2772 struct ppc64_elf_obj_tdata
2774 struct elf_obj_tdata elf
;
2776 /* Shortcuts to dynamic linker sections. */
2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection
*deleted_section
;
2784 /* TLS local dynamic got entry handling. Support for multiple GOT
2785 sections means we potentially need one of these for each input bfd. */
2786 struct got_entry tlsld_got
;
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela
*relocs
;
2792 /* Section contents. */
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
2798 unsigned int has_small_toc_reloc
: 1;
2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn
: 1;
2805 #define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2808 #define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2811 #define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
2815 /* Override the generic function because we store some extras. */
2818 ppc64_elf_mkobject (bfd
*abfd
)
2820 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2824 /* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2828 ppc64_elf_object_p (bfd
*abfd
)
2830 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2832 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2834 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd
->arch_info
= abfd
->arch_info
->next
;
2838 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2844 /* Support for core dump NOTE sections. */
2847 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2849 size_t offset
, size
;
2851 if (note
->descsz
!= 504)
2855 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2858 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2866 size
, note
->descpos
+ offset
);
2870 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2872 if (note
->descsz
!= 136)
2875 elf_tdata (abfd
)->core
->pid
2876 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2877 elf_tdata (abfd
)->core
->program
2878 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2879 elf_tdata (abfd
)->core
->command
2880 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2886 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2899 va_start (ap
, note_type
);
2900 memset (data
, 0, sizeof (data
));
2901 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2902 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2904 return elfcore_write_note (abfd
, buf
, bufsiz
,
2905 "CORE", note_type
, data
, sizeof (data
));
2916 va_start (ap
, note_type
);
2917 memset (data
, 0, 112);
2918 pid
= va_arg (ap
, long);
2919 bfd_put_32 (abfd
, pid
, data
+ 32);
2920 cursig
= va_arg (ap
, int);
2921 bfd_put_16 (abfd
, cursig
, data
+ 12);
2922 greg
= va_arg (ap
, const void *);
2923 memcpy (data
+ 112, greg
, 384);
2924 memset (data
+ 496, 0, 8);
2926 return elfcore_write_note (abfd
, buf
, bufsiz
,
2927 "CORE", note_type
, data
, sizeof (data
));
2932 /* Add extra PPC sections. */
2934 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2942 { NULL
, 0, 0, 0, 0 }
2945 enum _ppc64_sec_type
{
2951 struct _ppc64_elf_section_data
2953 struct bfd_elf_section_data elf
;
2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2960 /* Points to the function code section for local opd entries. */
2961 asection
**func_sec
;
2963 /* After editing .opd, adjust references to opd local syms. */
2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2973 /* And the relocation addend. */
2978 enum _ppc64_sec_type sec_type
:2;
2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch
:1;
2985 #define ppc64_elf_section_data(sec) \
2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2989 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2991 if (!sec
->used_by_bfd
)
2993 struct _ppc64_elf_section_data
*sdata
;
2994 bfd_size_type amt
= sizeof (*sdata
);
2996 sdata
= bfd_zalloc (abfd
, amt
);
2999 sec
->used_by_bfd
= sdata
;
3002 return _bfd_elf_new_section_hook (abfd
, sec
);
3005 static struct _opd_sec_data
*
3006 get_opd_info (asection
* sec
)
3009 && ppc64_elf_section_data (sec
) != NULL
3010 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3011 return &ppc64_elf_section_data (sec
)->u
.opd
;
3015 /* Parameters for the qsort hook. */
3016 static bfd_boolean synthetic_relocatable
;
3018 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3021 compare_symbols (const void *ap
, const void *bp
)
3023 const asymbol
*a
= * (const asymbol
**) ap
;
3024 const asymbol
*b
= * (const asymbol
**) bp
;
3026 /* Section symbols first. */
3027 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3029 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3032 /* then .opd symbols. */
3033 if (strcmp (a
->section
->name
, ".opd") == 0
3034 && strcmp (b
->section
->name
, ".opd") != 0)
3036 if (strcmp (a
->section
->name
, ".opd") != 0
3037 && strcmp (b
->section
->name
, ".opd") == 0)
3040 /* then other code symbols. */
3041 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3042 == (SEC_CODE
| SEC_ALLOC
)
3043 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3044 != (SEC_CODE
| SEC_ALLOC
))
3047 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3048 != (SEC_CODE
| SEC_ALLOC
)
3049 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3050 == (SEC_CODE
| SEC_ALLOC
))
3053 if (synthetic_relocatable
)
3055 if (a
->section
->id
< b
->section
->id
)
3058 if (a
->section
->id
> b
->section
->id
)
3062 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3065 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3073 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3076 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3079 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3082 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3085 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3088 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3091 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3097 /* Search SYMS for a symbol of the given VALUE. */
3100 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
3108 mid
= (lo
+ hi
) >> 1;
3109 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3111 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3121 mid
= (lo
+ hi
) >> 1;
3122 if (syms
[mid
]->section
->id
< id
)
3124 else if (syms
[mid
]->section
->id
> id
)
3126 else if (syms
[mid
]->value
< value
)
3128 else if (syms
[mid
]->value
> value
)
3138 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3140 bfd_vma vma
= *(bfd_vma
*) ptr
;
3141 return ((section
->flags
& SEC_ALLOC
) != 0
3142 && section
->vma
<= vma
3143 && vma
< section
->vma
+ section
->size
);
3146 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3147 entry syms. Also generate @plt symbols for the glink branch table. */
3150 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3151 long static_count
, asymbol
**static_syms
,
3152 long dyn_count
, asymbol
**dyn_syms
,
3159 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3160 asection
*opd
= NULL
;
3161 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3163 int abi
= abiversion (abfd
);
3169 opd
= bfd_get_section_by_name (abfd
, ".opd");
3170 if (opd
== NULL
&& abi
== 1)
3174 symcount
= static_count
;
3176 symcount
+= dyn_count
;
3180 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3184 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3186 /* Use both symbol tables. */
3187 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3188 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3190 else if (!relocatable
&& static_count
== 0)
3191 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3193 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3195 synthetic_relocatable
= relocatable
;
3196 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3198 if (!relocatable
&& symcount
> 1)
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3203 different values, so trim any with the same value. */
3204 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3205 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3206 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3207 syms
[j
++] = syms
[i
];
3212 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3216 for (; i
< symcount
; ++i
)
3217 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3218 != (SEC_CODE
| SEC_ALLOC
))
3219 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3223 for (; i
< symcount
; ++i
)
3224 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3228 for (; i
< symcount
; ++i
)
3229 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3233 for (; i
< symcount
; ++i
)
3234 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3235 != (SEC_CODE
| SEC_ALLOC
))
3243 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3248 if (opdsymend
== secsymend
)
3251 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3252 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3256 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3263 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3267 while (r
< opd
->relocation
+ relcount
3268 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3271 if (r
== opd
->relocation
+ relcount
)
3274 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3277 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3280 sym
= *r
->sym_ptr_ptr
;
3281 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3282 sym
->section
->id
, sym
->value
+ r
->addend
))
3285 size
+= sizeof (asymbol
);
3286 size
+= strlen (syms
[i
]->name
) + 2;
3290 s
= *ret
= bfd_malloc (size
);
3297 names
= (char *) (s
+ count
);
3299 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3303 while (r
< opd
->relocation
+ relcount
3304 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3307 if (r
== opd
->relocation
+ relcount
)
3310 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3313 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3316 sym
= *r
->sym_ptr_ptr
;
3317 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3318 sym
->section
->id
, sym
->value
+ r
->addend
))
3323 s
->flags
|= BSF_SYNTHETIC
;
3324 s
->section
= sym
->section
;
3325 s
->value
= sym
->value
+ r
->addend
;
3328 len
= strlen (syms
[i
]->name
);
3329 memcpy (names
, syms
[i
]->name
, len
+ 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s
->udata
.p
= syms
[i
];
3340 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3341 bfd_byte
*contents
= NULL
;
3344 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3345 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3348 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3350 free_contents_and_exit
:
3358 for (i
= secsymend
; i
< opdsymend
; ++i
)
3362 /* Ignore bogus symbols. */
3363 if (syms
[i
]->value
> opd
->size
- 8)
3366 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3367 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3370 size
+= sizeof (asymbol
);
3371 size
+= strlen (syms
[i
]->name
) + 2;
3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3377 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3379 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3381 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3383 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3384 goto free_contents_and_exit
;
3386 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3387 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3390 extdynend
= extdyn
+ dynamic
->size
;
3391 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3393 Elf_Internal_Dyn dyn
;
3394 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3396 if (dyn
.d_tag
== DT_NULL
)
3399 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3421 unsigned int off
= 0;
3423 while (bfd_get_section_contents (abfd
, glink
, buf
,
3424 glink_vma
+ off
- glink
->vma
, 4))
3426 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3428 if ((insn
& ~0x3fffffc) == 0)
3430 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3439 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3441 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3444 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3445 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3446 goto free_contents_and_exit
;
3448 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3449 size
+= plt_count
* sizeof (asymbol
);
3451 p
= relplt
->relocation
;
3452 for (i
= 0; i
< plt_count
; i
++, p
++)
3454 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3456 size
+= sizeof ("+0x") - 1 + 16;
3461 s
= *ret
= bfd_malloc (size
);
3463 goto free_contents_and_exit
;
3465 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3467 for (i
= secsymend
; i
< opdsymend
; ++i
)
3471 if (syms
[i
]->value
> opd
->size
- 8)
3474 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3475 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3479 asection
*sec
= abfd
->sections
;
3486 long mid
= (lo
+ hi
) >> 1;
3487 if (syms
[mid
]->section
->vma
< ent
)
3489 else if (syms
[mid
]->section
->vma
> ent
)
3493 sec
= syms
[mid
]->section
;
3498 if (lo
>= hi
&& lo
> codesecsym
)
3499 sec
= syms
[lo
- 1]->section
;
3501 for (; sec
!= NULL
; sec
= sec
->next
)
3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3507 if ((sec
->flags
& SEC_ALLOC
) == 0)
3509 if ((sec
->flags
& SEC_CODE
) != 0)
3512 s
->flags
|= BSF_SYNTHETIC
;
3513 s
->value
= ent
- s
->section
->vma
;
3516 len
= strlen (syms
[i
]->name
);
3517 memcpy (names
, syms
[i
]->name
, len
+ 1);
3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s
->udata
.p
= syms
[i
];
3527 if (glink
!= NULL
&& relplt
!= NULL
)
3531 /* Add a symbol for the main glink trampoline. */
3532 memset (s
, 0, sizeof *s
);
3534 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3536 s
->value
= resolv_vma
- glink
->vma
;
3538 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names
+= sizeof ("__glink_PLTresolve");
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p
= relplt
->relocation
;
3561 for (i
= 0; i
< plt_count
; i
++, p
++)
3565 *s
= **p
->sym_ptr_ptr
;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s
->flags
& BSF_LOCAL
) == 0)
3569 s
->flags
|= BSF_GLOBAL
;
3570 s
->flags
|= BSF_SYNTHETIC
;
3572 s
->value
= glink_vma
- glink
->vma
;
3575 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3576 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3580 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3581 names
+= sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3583 names
+= strlen (names
);
3585 memcpy (names
, "@plt", sizeof ("@plt"));
3586 names
+= sizeof ("@plt");
3606 /* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3623 The function definition in another object file might be:
3627 . .quad .TOC.@tocbase
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
3672 definition from some other object, eg. a static library.
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
3678 /* Of those relocs that might be copied as dynamic relocs, this function
3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
3683 must_be_dyn_reloc (struct bfd_link_info
*info
,
3684 enum elf_ppc64_reloc_type r_type
)
3696 case R_PPC64_TPREL16
:
3697 case R_PPC64_TPREL16_LO
:
3698 case R_PPC64_TPREL16_HI
:
3699 case R_PPC64_TPREL16_HA
:
3700 case R_PPC64_TPREL16_DS
:
3701 case R_PPC64_TPREL16_LO_DS
:
3702 case R_PPC64_TPREL16_HIGH
:
3703 case R_PPC64_TPREL16_HIGHA
:
3704 case R_PPC64_TPREL16_HIGHER
:
3705 case R_PPC64_TPREL16_HIGHERA
:
3706 case R_PPC64_TPREL16_HIGHEST
:
3707 case R_PPC64_TPREL16_HIGHESTA
:
3708 case R_PPC64_TPREL64
:
3709 return !info
->executable
;
3713 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3724 redefines the function descriptor symbol to point to the copy. This
3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
3728 #define ELIMINATE_COPY_RELOCS 1
3730 /* Section name for stubs is the associated section name plus this
3732 #define STUB_SUFFIX ".stub"
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
3781 enum ppc_stub_type
{
3783 ppc_stub_long_branch
,
3784 ppc_stub_long_branch_r2off
,
3785 ppc_stub_plt_branch
,
3786 ppc_stub_plt_branch_r2off
,
3788 ppc_stub_plt_call_r2save
,
3789 ppc_stub_global_entry
3792 struct ppc_stub_hash_entry
{
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root
;
3797 enum ppc_stub_type stub_type
;
3799 /* The stub section. */
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset
;
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value
;
3808 asection
*target_section
;
3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry
*h
;
3812 struct plt_entry
*plt_ent
;
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3818 /* Symbol st_other. */
3819 unsigned char other
;
3822 struct ppc_branch_hash_entry
{
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root
;
3827 /* Offset within branch lookup table. */
3828 unsigned int offset
;
3830 /* Generation marker. */
3834 /* Used to track dynamic relocations for local symbols. */
3835 struct ppc_dyn_relocs
3837 struct ppc_dyn_relocs
*next
;
3839 /* The input section of the reloc. */
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count
: 31;
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc
: 1;
3849 struct ppc_link_hash_entry
3851 struct elf_link_hash_entry elf
;
3854 /* A pointer to the most recently used stub hash entry against this
3856 struct ppc_stub_hash_entry
*stub_cache
;
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry
*next_dot_sym
;
3862 /* Track dynamic relocs copied for this symbol. */
3863 struct elf_dyn_relocs
*dyn_relocs
;
3865 /* Link between function code and descriptor symbols. */
3866 struct ppc_link_hash_entry
*oh
;
3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func
:1;
3870 unsigned int is_func_descriptor
:1;
3871 unsigned int fake
:1;
3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
3876 unsigned int adjust_done
:1;
3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined
:1;
3881 /* Contexts in which symbol is used in the GOT (or TOC).
3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889 #define TLS_GD 1 /* GD reloc. */
3890 #define TLS_LD 2 /* LD reloc. */
3891 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893 #define TLS_TLS 16 /* Any TLS reloc. */
3894 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3896 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3897 unsigned char tls_mask
;
3900 /* ppc64 ELF linker hash table. */
3902 struct ppc_link_hash_table
3904 struct elf_link_hash_table elf
;
3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table
;
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table
;
3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab
;
3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params
*params
;
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3921 /* This is the section to which stubs in the group will be attached. */
3923 /* The stub section. */
3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3929 /* Temp used when calculating TOC pointers. */
3932 asection
*toc_first_sec
;
3934 /* Highest input section id. */
3937 /* Highest output section index. */
3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry
*dot_syms
;
3943 /* List of input sections for each output section. */
3944 asection
**input_list
;
3946 /* Shortcuts to get to dynamic linker sections. */
3953 asection
*glink_eh_frame
;
3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry
*tls_get_addr
;
3957 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size
;
3963 unsigned long stub_count
[ppc_stub_global_entry
];
3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals
;
3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi
:1;
3971 /* Support for multiple toc sections. */
3972 unsigned int do_multi_toc
:1;
3973 unsigned int multi_toc_needed
:1;
3974 unsigned int second_toc_pass
:1;
3975 unsigned int do_toc_opt
:1;
3978 unsigned int stub_error
:1;
3980 /* Temp used by ppc64_elf_before_check_relocs. */
3981 unsigned int twiddled_syms
:1;
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration
;
3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache
;
3990 /* Rename some of the generic section flags to better document how they
3993 /* Nonzero if this section has TLS related relocations. */
3994 #define has_tls_reloc sec_flg0
3996 /* Nonzero if this section has a call to __tls_get_addr. */
3997 #define has_tls_get_addr_call sec_flg1
3999 /* Nonzero if this section has any toc or got relocs. */
4000 #define has_toc_reloc sec_flg2
4002 /* Nonzero if this section has a call to another section that uses
4004 #define makes_toc_func_call sec_flg3
4006 /* Recursion protection when determining above flag. */
4007 #define call_check_in_progress sec_flg4
4008 #define call_check_done sec_flg5
4010 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4012 #define ppc_hash_table(p) \
4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4016 #define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4020 #define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4024 /* Create an entry in the stub hash table. */
4026 static struct bfd_hash_entry
*
4027 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4028 struct bfd_hash_table
*table
,
4031 /* Allocate the structure if it has not already been allocated by a
4035 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4040 /* Call the allocation method of the superclass. */
4041 entry
= bfd_hash_newfunc (entry
, table
, string
);
4044 struct ppc_stub_hash_entry
*eh
;
4046 /* Initialize the local fields. */
4047 eh
= (struct ppc_stub_hash_entry
*) entry
;
4048 eh
->stub_type
= ppc_stub_none
;
4049 eh
->stub_sec
= NULL
;
4050 eh
->stub_offset
= 0;
4051 eh
->target_value
= 0;
4052 eh
->target_section
= NULL
;
4062 /* Create an entry in the branch hash table. */
4064 static struct bfd_hash_entry
*
4065 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4066 struct bfd_hash_table
*table
,
4069 /* Allocate the structure if it has not already been allocated by a
4073 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4078 /* Call the allocation method of the superclass. */
4079 entry
= bfd_hash_newfunc (entry
, table
, string
);
4082 struct ppc_branch_hash_entry
*eh
;
4084 /* Initialize the local fields. */
4085 eh
= (struct ppc_branch_hash_entry
*) entry
;
4093 /* Create an entry in a ppc64 ELF linker hash table. */
4095 static struct bfd_hash_entry
*
4096 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4097 struct bfd_hash_table
*table
,
4100 /* Allocate the structure if it has not already been allocated by a
4104 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4109 /* Call the allocation method of the superclass. */
4110 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4113 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4115 memset (&eh
->u
.stub_cache
, 0,
4116 (sizeof (struct ppc_link_hash_entry
)
4117 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4127 A new object defines "foo" and references "bar".
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4133 Keep a list of newly added dot-symbols. */
4135 if (string
[0] == '.')
4137 struct ppc_link_hash_table
*htab
;
4139 htab
= (struct ppc_link_hash_table
*) table
;
4140 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4141 htab
->dot_syms
= eh
;
4148 struct tocsave_entry
{
4154 tocsave_htab_hash (const void *p
)
4156 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4157 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4161 tocsave_htab_eq (const void *p1
, const void *p2
)
4163 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4164 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4165 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4168 /* Destroy a ppc64 ELF linker hash table. */
4171 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4173 struct ppc_link_hash_table
*htab
;
4175 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4176 if (htab
->tocsave_htab
)
4177 htab_delete (htab
->tocsave_htab
);
4178 bfd_hash_table_free (&htab
->branch_hash_table
);
4179 bfd_hash_table_free (&htab
->stub_hash_table
);
4180 _bfd_elf_link_hash_table_free (obfd
);
4183 /* Create a ppc64 ELF linker hash table. */
4185 static struct bfd_link_hash_table
*
4186 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4188 struct ppc_link_hash_table
*htab
;
4189 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4191 htab
= bfd_zmalloc (amt
);
4195 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4196 sizeof (struct ppc_link_hash_entry
),
4203 /* Init the stub hash table too. */
4204 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4205 sizeof (struct ppc_stub_hash_entry
)))
4207 _bfd_elf_link_hash_table_free (abfd
);
4211 /* And the branch hash table. */
4212 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4213 sizeof (struct ppc_branch_hash_entry
)))
4215 bfd_hash_table_free (&htab
->stub_hash_table
);
4216 _bfd_elf_link_hash_table_free (abfd
);
4220 htab
->tocsave_htab
= htab_try_create (1024,
4224 if (htab
->tocsave_htab
== NULL
)
4226 ppc64_elf_link_hash_table_free (abfd
);
4229 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
4235 htab
->elf
.init_got_refcount
.refcount
= 0;
4236 htab
->elf
.init_got_refcount
.glist
= NULL
;
4237 htab
->elf
.init_plt_refcount
.refcount
= 0;
4238 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4239 htab
->elf
.init_got_offset
.offset
= 0;
4240 htab
->elf
.init_got_offset
.glist
= NULL
;
4241 htab
->elf
.init_plt_offset
.offset
= 0;
4242 htab
->elf
.init_plt_offset
.glist
= NULL
;
4244 return &htab
->elf
.root
;
4247 /* Create sections for linker generated code. */
4250 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4252 struct ppc_link_hash_table
*htab
;
4255 htab
= ppc_hash_table (info
);
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4259 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4260 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4262 if (htab
->sfpr
== NULL
4263 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4269 if (htab
->glink
== NULL
4270 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4273 if (!info
->no_ld_generated_unwind_info
)
4275 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4277 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4280 if (htab
->glink_eh_frame
== NULL
4281 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4285 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4286 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4287 if (htab
->elf
.iplt
== NULL
4288 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4291 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4292 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4294 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4295 if (htab
->elf
.irelplt
== NULL
4296 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags
= (SEC_ALLOC
| SEC_LOAD
4301 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4302 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4304 if (htab
->brlt
== NULL
4305 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4311 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4312 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4313 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4316 if (htab
->relbrlt
== NULL
4317 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4323 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4326 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4327 struct ppc64_elf_params
*params
)
4329 struct ppc_link_hash_table
*htab
;
4331 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4333 /* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab
= ppc_hash_table (info
);
4339 htab
->elf
.dynobj
= params
->stub_bfd
;
4340 htab
->params
= params
;
4342 if (info
->relocatable
)
4345 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4348 /* Build a name for an entry in the stub hash table. */
4351 ppc_stub_name (const asection
*input_section
,
4352 const asection
*sym_sec
,
4353 const struct ppc_link_hash_entry
*h
,
4354 const Elf_Internal_Rela
*rel
)
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4366 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4367 stub_name
= bfd_malloc (len
);
4368 if (stub_name
== NULL
)
4371 len
= sprintf (stub_name
, "%08x.%s+%x",
4372 input_section
->id
& 0xffffffff,
4373 h
->elf
.root
.root
.string
,
4374 (int) rel
->r_addend
& 0xffffffff);
4378 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4379 stub_name
= bfd_malloc (len
);
4380 if (stub_name
== NULL
)
4383 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4384 input_section
->id
& 0xffffffff,
4385 sym_sec
->id
& 0xffffffff,
4386 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4387 (int) rel
->r_addend
& 0xffffffff);
4389 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4390 stub_name
[len
- 2] = 0;
4394 /* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4397 static struct ppc_stub_hash_entry
*
4398 ppc_get_stub_entry (const asection
*input_section
,
4399 const asection
*sym_sec
,
4400 struct ppc_link_hash_entry
*h
,
4401 const Elf_Internal_Rela
*rel
,
4402 struct ppc_link_hash_table
*htab
)
4404 struct ppc_stub_hash_entry
*stub_entry
;
4405 const asection
*id_sec
;
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4414 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4415 && h
->u
.stub_cache
->h
== h
4416 && h
->u
.stub_cache
->id_sec
== id_sec
)
4418 stub_entry
= h
->u
.stub_cache
;
4424 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4425 if (stub_name
== NULL
)
4428 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4429 stub_name
, FALSE
, FALSE
);
4431 h
->u
.stub_cache
= stub_entry
;
4439 /* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4442 static struct ppc_stub_hash_entry
*
4443 ppc_add_stub (const char *stub_name
,
4445 struct bfd_link_info
*info
)
4447 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4450 struct ppc_stub_hash_entry
*stub_entry
;
4452 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4453 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4454 if (stub_sec
== NULL
)
4456 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4457 if (stub_sec
== NULL
)
4463 namelen
= strlen (link_sec
->name
);
4464 len
= namelen
+ sizeof (STUB_SUFFIX
);
4465 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4469 memcpy (s_name
, link_sec
->name
, namelen
);
4470 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4471 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4472 if (stub_sec
== NULL
)
4474 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4476 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4482 if (stub_entry
== NULL
)
4484 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4485 section
->owner
, stub_name
);
4489 stub_entry
->stub_sec
= stub_sec
;
4490 stub_entry
->stub_offset
= 0;
4491 stub_entry
->id_sec
= link_sec
;
4495 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
4499 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4501 asection
*got
, *relgot
;
4503 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4505 if (!is_ppc64_elf (abfd
))
4511 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4514 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED
);
4517 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4519 || !bfd_set_section_alignment (abfd
, got
, 3))
4522 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4523 flags
| SEC_READONLY
);
4525 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4528 ppc64_elf_tdata (abfd
)->got
= got
;
4529 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4533 /* Create the dynamic sections, and set up shortcuts. */
4536 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4538 struct ppc_link_hash_table
*htab
;
4540 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4543 htab
= ppc_hash_table (info
);
4547 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4549 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4551 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4552 || (!info
->shared
&& !htab
->relbss
))
4558 /* Follow indirect and warning symbol links. */
4560 static inline struct bfd_link_hash_entry
*
4561 follow_link (struct bfd_link_hash_entry
*h
)
4563 while (h
->type
== bfd_link_hash_indirect
4564 || h
->type
== bfd_link_hash_warning
)
4569 static inline struct elf_link_hash_entry
*
4570 elf_follow_link (struct elf_link_hash_entry
*h
)
4572 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4575 static inline struct ppc_link_hash_entry
*
4576 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4578 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4581 /* Merge PLT info on FROM with that on TO. */
4584 move_plt_plist (struct ppc_link_hash_entry
*from
,
4585 struct ppc_link_hash_entry
*to
)
4587 if (from
->elf
.plt
.plist
!= NULL
)
4589 if (to
->elf
.plt
.plist
!= NULL
)
4591 struct plt_entry
**entp
;
4592 struct plt_entry
*ent
;
4594 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4596 struct plt_entry
*dent
;
4598 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4599 if (dent
->addend
== ent
->addend
)
4601 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4608 *entp
= to
->elf
.plt
.plist
;
4611 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4612 from
->elf
.plt
.plist
= NULL
;
4616 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4619 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4620 struct elf_link_hash_entry
*dir
,
4621 struct elf_link_hash_entry
*ind
)
4623 struct ppc_link_hash_entry
*edir
, *eind
;
4625 edir
= (struct ppc_link_hash_entry
*) dir
;
4626 eind
= (struct ppc_link_hash_entry
*) ind
;
4628 edir
->is_func
|= eind
->is_func
;
4629 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4630 edir
->tls_mask
|= eind
->tls_mask
;
4631 if (eind
->oh
!= NULL
)
4632 edir
->oh
= ppc_follow_link (eind
->oh
);
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4639 && edir
->elf
.dynamic_adjusted
))
4640 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4642 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4643 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4644 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4645 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4646 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
4649 if (eind
->dyn_relocs
!= NULL
)
4651 if (edir
->dyn_relocs
!= NULL
)
4653 struct elf_dyn_relocs
**pp
;
4654 struct elf_dyn_relocs
*p
;
4656 /* Add reloc counts against the indirect sym to the direct sym
4657 list. Merge any entries against the same section. */
4658 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4660 struct elf_dyn_relocs
*q
;
4662 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4663 if (q
->sec
== p
->sec
)
4665 q
->pc_count
+= p
->pc_count
;
4666 q
->count
+= p
->count
;
4673 *pp
= edir
->dyn_relocs
;
4676 edir
->dyn_relocs
= eind
->dyn_relocs
;
4677 eind
->dyn_relocs
= NULL
;
4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4687 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
4692 if (eind
->elf
.got
.glist
!= NULL
)
4694 if (edir
->elf
.got
.glist
!= NULL
)
4696 struct got_entry
**entp
;
4697 struct got_entry
*ent
;
4699 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4701 struct got_entry
*dent
;
4703 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4704 if (dent
->addend
== ent
->addend
4705 && dent
->owner
== ent
->owner
4706 && dent
->tls_type
== ent
->tls_type
)
4708 dent
->got
.refcount
+= ent
->got
.refcount
;
4715 *entp
= edir
->elf
.got
.glist
;
4718 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4719 eind
->elf
.got
.glist
= NULL
;
4722 /* And plt entries. */
4723 move_plt_plist (eind
, edir
);
4725 if (eind
->elf
.dynindx
!= -1)
4727 if (edir
->elf
.dynindx
!= -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4729 edir
->elf
.dynstr_index
);
4730 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4731 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4732 eind
->elf
.dynindx
= -1;
4733 eind
->elf
.dynstr_index
= 0;
4737 /* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4740 static struct ppc_link_hash_entry
*
4741 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4743 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4747 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4749 fdh
= (struct ppc_link_hash_entry
*)
4750 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4754 fdh
->is_func_descriptor
= 1;
4760 return ppc_follow_link (fdh
);
4763 /* Make a fake function descriptor sym for the code sym FH. */
4765 static struct ppc_link_hash_entry
*
4766 make_fdh (struct bfd_link_info
*info
,
4767 struct ppc_link_hash_entry
*fh
)
4771 struct bfd_link_hash_entry
*bh
;
4772 struct ppc_link_hash_entry
*fdh
;
4774 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4775 newsym
= bfd_make_empty_symbol (abfd
);
4776 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4777 newsym
->section
= bfd_und_section_ptr
;
4779 newsym
->flags
= BSF_WEAK
;
4782 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4783 newsym
->flags
, newsym
->section
,
4784 newsym
->value
, NULL
, FALSE
, FALSE
,
4788 fdh
= (struct ppc_link_hash_entry
*) bh
;
4789 fdh
->elf
.non_elf
= 0;
4791 fdh
->is_func_descriptor
= 1;
4798 /* Fix function descriptor symbols defined in .opd sections to be
4802 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4803 struct bfd_link_info
*info
,
4804 Elf_Internal_Sym
*isym
,
4806 flagword
*flags ATTRIBUTE_UNUSED
,
4810 if ((ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4811 || ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4812 && (ibfd
->flags
& DYNAMIC
) == 0
4813 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4814 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4817 && strcmp ((*sec
)->name
, ".opd") == 0)
4821 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4822 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4823 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4825 /* If the symbol is a function defined in .opd, and the function
4826 code is in a discarded group, let it appear to be undefined. */
4827 if (!info
->relocatable
4828 && (*sec
)->reloc_count
!= 0
4829 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4830 FALSE
) != (bfd_vma
) -1
4831 && discarded_section (code_sec
))
4833 *sec
= bfd_und_section_ptr
;
4834 isym
->st_shndx
= SHN_UNDEF
;
4838 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4840 if (abiversion (ibfd
) == 0)
4841 set_abiversion (ibfd
, 2);
4842 else if (abiversion (ibfd
) == 1)
4844 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4845 " for ABI version 1\n"), name
);
4846 bfd_set_error (bfd_error_bad_value
);
4854 /* Merge non-visibility st_other attributes: local entry point. */
4857 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4858 const Elf_Internal_Sym
*isym
,
4859 bfd_boolean definition
,
4860 bfd_boolean dynamic
)
4862 if (definition
&& !dynamic
)
4863 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4864 | ELF_ST_VISIBILITY (h
->other
));
4867 /* This function makes an old ABI object reference to ".bar" cause the
4868 inclusion of a new ABI object archive that defines "bar".
4869 NAME is a symbol defined in an archive. Return a symbol in the hash
4870 table that might be satisfied by the archive symbols. */
4872 static struct elf_link_hash_entry
*
4873 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4874 struct bfd_link_info
*info
,
4877 struct elf_link_hash_entry
*h
;
4881 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4883 /* Don't return this sym if it is a fake function descriptor
4884 created by add_symbol_adjust. */
4885 && !(h
->root
.type
== bfd_link_hash_undefweak
4886 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4892 len
= strlen (name
);
4893 dot_name
= bfd_alloc (abfd
, len
+ 2);
4894 if (dot_name
== NULL
)
4895 return (struct elf_link_hash_entry
*) 0 - 1;
4897 memcpy (dot_name
+ 1, name
, len
+ 1);
4898 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4899 bfd_release (abfd
, dot_name
);
4903 /* This function satisfies all old ABI object references to ".bar" if a
4904 new ABI object defines "bar". Well, at least, undefined dot symbols
4905 are made weak. This stops later archive searches from including an
4906 object if we already have a function descriptor definition. It also
4907 prevents the linker complaining about undefined symbols.
4908 We also check and correct mismatched symbol visibility here. The
4909 most restrictive visibility of the function descriptor and the
4910 function entry symbol is used. */
4913 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4915 struct ppc_link_hash_table
*htab
;
4916 struct ppc_link_hash_entry
*fdh
;
4918 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4921 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4922 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4924 if (eh
->elf
.root
.root
.string
[0] != '.')
4927 htab
= ppc_hash_table (info
);
4931 fdh
= lookup_fdh (eh
, htab
);
4934 if (!info
->relocatable
4935 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4936 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4937 && eh
->elf
.ref_regular
)
4939 /* Make an undefweak function descriptor sym, which is enough to
4940 pull in an --as-needed shared lib, but won't cause link
4941 errors. Archives are handled elsewhere. */
4942 fdh
= make_fdh (info
, eh
);
4945 fdh
->elf
.ref_regular
= 1;
4950 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4951 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4952 if (entry_vis
< descr_vis
)
4953 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4954 else if (entry_vis
> descr_vis
)
4955 eh
->elf
.other
+= descr_vis
- entry_vis
;
4957 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4958 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4959 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4961 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4962 eh
->was_undefined
= 1;
4963 htab
->twiddled_syms
= 1;
4970 /* Set up opd section info and abiversion for IBFD, and process list
4971 of dot-symbols we made in link_hash_newfunc. */
4974 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
4976 struct ppc_link_hash_table
*htab
;
4977 struct ppc_link_hash_entry
**p
, *eh
;
4978 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
4980 if (opd
!= NULL
&& opd
->size
!= 0)
4982 if (abiversion (ibfd
) == 0)
4983 set_abiversion (ibfd
, 1);
4984 else if (abiversion (ibfd
) == 2)
4986 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
4988 ibfd
, abiversion (ibfd
));
4989 bfd_set_error (bfd_error_bad_value
);
4993 if ((ibfd
->flags
& DYNAMIC
) == 0
4994 && (opd
->flags
& SEC_RELOC
) != 0
4995 && opd
->reloc_count
!= 0
4996 && !bfd_is_abs_section (opd
->output_section
))
4998 /* Garbage collection needs some extra help with .opd sections.
4999 We don't want to necessarily keep everything referenced by
5000 relocs in .opd, as that would keep all functions. Instead,
5001 if we reference an .opd symbol (a function descriptor), we
5002 want to keep the function code symbol's section. This is
5003 easy for global symbols, but for local syms we need to keep
5004 information about the associated function section. */
5006 asection
**opd_sym_map
;
5008 amt
= opd
->size
* sizeof (*opd_sym_map
) / 8;
5009 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5010 if (opd_sym_map
== NULL
)
5012 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5013 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5014 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5018 if (!is_ppc64_elf (info
->output_bfd
))
5020 htab
= ppc_hash_table (info
);
5024 /* For input files without an explicit abiversion in e_flags
5025 we should have flagged any with symbol st_other bits set
5026 as ELFv1 and above flagged those with .opd as ELFv2.
5027 Set the output abiversion if not yet set, and for any input
5028 still ambiguous, take its abiversion from the output.
5029 Differences in ABI are reported later. */
5030 if (abiversion (info
->output_bfd
) == 0)
5031 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5032 else if (abiversion (ibfd
) == 0)
5033 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5035 p
= &htab
->dot_syms
;
5036 while ((eh
= *p
) != NULL
)
5039 if (&eh
->elf
== htab
->elf
.hgot
)
5041 else if (htab
->elf
.hgot
== NULL
5042 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5043 htab
->elf
.hgot
= &eh
->elf
;
5044 else if (!add_symbol_adjust (eh
, info
))
5046 p
= &eh
->u
.next_dot_sym
;
5049 /* Clear the list for non-ppc64 input files. */
5050 p
= &htab
->dot_syms
;
5051 while ((eh
= *p
) != NULL
)
5054 p
= &eh
->u
.next_dot_sym
;
5057 /* We need to fix the undefs list for any syms we have twiddled to
5059 if (htab
->twiddled_syms
)
5061 bfd_link_repair_undef_list (&htab
->elf
.root
);
5062 htab
->twiddled_syms
= 0;
5067 /* Undo hash table changes when an --as-needed input file is determined
5068 not to be needed. */
5071 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5072 struct bfd_link_info
*info
,
5073 enum notice_asneeded_action act
)
5075 if (act
== notice_not_needed
)
5077 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5082 htab
->dot_syms
= NULL
;
5084 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5087 /* If --just-symbols against a final linked binary, then assume we need
5088 toc adjusting stubs when calling functions defined there. */
5091 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5093 if ((sec
->flags
& SEC_CODE
) != 0
5094 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5095 && is_ppc64_elf (sec
->owner
))
5097 if (abiversion (sec
->owner
) >= 2
5098 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5099 sec
->has_toc_reloc
= 1;
5101 _bfd_elf_link_just_syms (sec
, info
);
5104 static struct plt_entry
**
5105 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5106 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5108 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5109 struct plt_entry
**local_plt
;
5110 unsigned char *local_got_tls_masks
;
5112 if (local_got_ents
== NULL
)
5114 bfd_size_type size
= symtab_hdr
->sh_info
;
5116 size
*= (sizeof (*local_got_ents
)
5117 + sizeof (*local_plt
)
5118 + sizeof (*local_got_tls_masks
));
5119 local_got_ents
= bfd_zalloc (abfd
, size
);
5120 if (local_got_ents
== NULL
)
5122 elf_local_got_ents (abfd
) = local_got_ents
;
5125 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5127 struct got_entry
*ent
;
5129 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5130 if (ent
->addend
== r_addend
5131 && ent
->owner
== abfd
5132 && ent
->tls_type
== tls_type
)
5136 bfd_size_type amt
= sizeof (*ent
);
5137 ent
= bfd_alloc (abfd
, amt
);
5140 ent
->next
= local_got_ents
[r_symndx
];
5141 ent
->addend
= r_addend
;
5143 ent
->tls_type
= tls_type
;
5144 ent
->is_indirect
= FALSE
;
5145 ent
->got
.refcount
= 0;
5146 local_got_ents
[r_symndx
] = ent
;
5148 ent
->got
.refcount
+= 1;
5151 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5152 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5153 local_got_tls_masks
[r_symndx
] |= tls_type
;
5155 return local_plt
+ r_symndx
;
5159 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5161 struct plt_entry
*ent
;
5163 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5164 if (ent
->addend
== addend
)
5168 bfd_size_type amt
= sizeof (*ent
);
5169 ent
= bfd_alloc (abfd
, amt
);
5173 ent
->addend
= addend
;
5174 ent
->plt
.refcount
= 0;
5177 ent
->plt
.refcount
+= 1;
5182 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5184 return (r_type
== R_PPC64_REL24
5185 || r_type
== R_PPC64_REL14
5186 || r_type
== R_PPC64_REL14_BRTAKEN
5187 || r_type
== R_PPC64_REL14_BRNTAKEN
5188 || r_type
== R_PPC64_ADDR24
5189 || r_type
== R_PPC64_ADDR14
5190 || r_type
== R_PPC64_ADDR14_BRTAKEN
5191 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5194 /* Look through the relocs for a section during the first phase, and
5195 calculate needed space in the global offset table, procedure
5196 linkage table, and dynamic reloc sections. */
5199 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5200 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5202 struct ppc_link_hash_table
*htab
;
5203 Elf_Internal_Shdr
*symtab_hdr
;
5204 struct elf_link_hash_entry
**sym_hashes
;
5205 const Elf_Internal_Rela
*rel
;
5206 const Elf_Internal_Rela
*rel_end
;
5208 asection
**opd_sym_map
;
5209 struct elf_link_hash_entry
*tga
, *dottga
;
5211 if (info
->relocatable
)
5214 /* Don't do anything special with non-loaded, non-alloced sections.
5215 In particular, any relocs in such sections should not affect GOT
5216 and PLT reference counting (ie. we don't allow them to create GOT
5217 or PLT entries), there's no possibility or desire to optimize TLS
5218 relocs, and there's not much point in propagating relocs to shared
5219 libs that the dynamic linker won't relocate. */
5220 if ((sec
->flags
& SEC_ALLOC
) == 0)
5223 BFD_ASSERT (is_ppc64_elf (abfd
));
5225 htab
= ppc_hash_table (info
);
5229 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5230 FALSE
, FALSE
, TRUE
);
5231 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5232 FALSE
, FALSE
, TRUE
);
5233 symtab_hdr
= &elf_symtab_hdr (abfd
);
5234 sym_hashes
= elf_sym_hashes (abfd
);
5237 if (ppc64_elf_section_data (sec
) != NULL
5238 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5239 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5241 rel_end
= relocs
+ sec
->reloc_count
;
5242 for (rel
= relocs
; rel
< rel_end
; rel
++)
5244 unsigned long r_symndx
;
5245 struct elf_link_hash_entry
*h
;
5246 enum elf_ppc64_reloc_type r_type
;
5248 struct _ppc64_elf_section_data
*ppc64_sec
;
5249 struct plt_entry
**ifunc
;
5251 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5252 if (r_symndx
< symtab_hdr
->sh_info
)
5256 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5257 h
= elf_follow_link (h
);
5259 /* PR15323, ref flags aren't set for references in the same
5261 h
->root
.non_ir_ref
= 1;
5263 if (h
== htab
->elf
.hgot
)
5264 sec
->has_toc_reloc
= 1;
5271 if (h
->type
== STT_GNU_IFUNC
)
5274 ifunc
= &h
->plt
.plist
;
5279 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5284 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5286 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5287 rel
->r_addend
, PLT_IFUNC
);
5292 r_type
= ELF64_R_TYPE (rel
->r_info
);
5293 if (is_branch_reloc (r_type
))
5295 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5298 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5299 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5300 /* We have a new-style __tls_get_addr call with a marker
5304 /* Mark this section as having an old-style call. */
5305 sec
->has_tls_get_addr_call
= 1;
5308 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5310 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5318 /* These special tls relocs tie a call to __tls_get_addr with
5319 its parameter symbol. */
5322 case R_PPC64_GOT_TLSLD16
:
5323 case R_PPC64_GOT_TLSLD16_LO
:
5324 case R_PPC64_GOT_TLSLD16_HI
:
5325 case R_PPC64_GOT_TLSLD16_HA
:
5326 tls_type
= TLS_TLS
| TLS_LD
;
5329 case R_PPC64_GOT_TLSGD16
:
5330 case R_PPC64_GOT_TLSGD16_LO
:
5331 case R_PPC64_GOT_TLSGD16_HI
:
5332 case R_PPC64_GOT_TLSGD16_HA
:
5333 tls_type
= TLS_TLS
| TLS_GD
;
5336 case R_PPC64_GOT_TPREL16_DS
:
5337 case R_PPC64_GOT_TPREL16_LO_DS
:
5338 case R_PPC64_GOT_TPREL16_HI
:
5339 case R_PPC64_GOT_TPREL16_HA
:
5341 info
->flags
|= DF_STATIC_TLS
;
5342 tls_type
= TLS_TLS
| TLS_TPREL
;
5345 case R_PPC64_GOT_DTPREL16_DS
:
5346 case R_PPC64_GOT_DTPREL16_LO_DS
:
5347 case R_PPC64_GOT_DTPREL16_HI
:
5348 case R_PPC64_GOT_DTPREL16_HA
:
5349 tls_type
= TLS_TLS
| TLS_DTPREL
;
5351 sec
->has_tls_reloc
= 1;
5355 case R_PPC64_GOT16_DS
:
5356 case R_PPC64_GOT16_HA
:
5357 case R_PPC64_GOT16_HI
:
5358 case R_PPC64_GOT16_LO
:
5359 case R_PPC64_GOT16_LO_DS
:
5360 /* This symbol requires a global offset table entry. */
5361 sec
->has_toc_reloc
= 1;
5362 if (r_type
== R_PPC64_GOT_TLSLD16
5363 || r_type
== R_PPC64_GOT_TLSGD16
5364 || r_type
== R_PPC64_GOT_TPREL16_DS
5365 || r_type
== R_PPC64_GOT_DTPREL16_DS
5366 || r_type
== R_PPC64_GOT16
5367 || r_type
== R_PPC64_GOT16_DS
)
5369 htab
->do_multi_toc
= 1;
5370 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5373 if (ppc64_elf_tdata (abfd
)->got
== NULL
5374 && !create_got_section (abfd
, info
))
5379 struct ppc_link_hash_entry
*eh
;
5380 struct got_entry
*ent
;
5382 eh
= (struct ppc_link_hash_entry
*) h
;
5383 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5384 if (ent
->addend
== rel
->r_addend
5385 && ent
->owner
== abfd
5386 && ent
->tls_type
== tls_type
)
5390 bfd_size_type amt
= sizeof (*ent
);
5391 ent
= bfd_alloc (abfd
, amt
);
5394 ent
->next
= eh
->elf
.got
.glist
;
5395 ent
->addend
= rel
->r_addend
;
5397 ent
->tls_type
= tls_type
;
5398 ent
->is_indirect
= FALSE
;
5399 ent
->got
.refcount
= 0;
5400 eh
->elf
.got
.glist
= ent
;
5402 ent
->got
.refcount
+= 1;
5403 eh
->tls_mask
|= tls_type
;
5406 /* This is a global offset table entry for a local symbol. */
5407 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5408 rel
->r_addend
, tls_type
))
5411 /* We may also need a plt entry if the symbol turns out to be
5413 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1)
5415 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5420 case R_PPC64_PLT16_HA
:
5421 case R_PPC64_PLT16_HI
:
5422 case R_PPC64_PLT16_LO
:
5425 /* This symbol requires a procedure linkage table entry. We
5426 actually build the entry in adjust_dynamic_symbol,
5427 because this might be a case of linking PIC code without
5428 linking in any dynamic objects, in which case we don't
5429 need to generate a procedure linkage table after all. */
5432 /* It does not make sense to have a procedure linkage
5433 table entry for a local symbol. */
5434 bfd_set_error (bfd_error_bad_value
);
5439 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5442 if (h
->root
.root
.string
[0] == '.'
5443 && h
->root
.root
.string
[1] != '\0')
5444 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5448 /* The following relocations don't need to propagate the
5449 relocation if linking a shared object since they are
5450 section relative. */
5451 case R_PPC64_SECTOFF
:
5452 case R_PPC64_SECTOFF_LO
:
5453 case R_PPC64_SECTOFF_HI
:
5454 case R_PPC64_SECTOFF_HA
:
5455 case R_PPC64_SECTOFF_DS
:
5456 case R_PPC64_SECTOFF_LO_DS
:
5457 case R_PPC64_DTPREL16
:
5458 case R_PPC64_DTPREL16_LO
:
5459 case R_PPC64_DTPREL16_HI
:
5460 case R_PPC64_DTPREL16_HA
:
5461 case R_PPC64_DTPREL16_DS
:
5462 case R_PPC64_DTPREL16_LO_DS
:
5463 case R_PPC64_DTPREL16_HIGH
:
5464 case R_PPC64_DTPREL16_HIGHA
:
5465 case R_PPC64_DTPREL16_HIGHER
:
5466 case R_PPC64_DTPREL16_HIGHERA
:
5467 case R_PPC64_DTPREL16_HIGHEST
:
5468 case R_PPC64_DTPREL16_HIGHESTA
:
5473 case R_PPC64_REL16_LO
:
5474 case R_PPC64_REL16_HI
:
5475 case R_PPC64_REL16_HA
:
5478 /* Not supported as a dynamic relocation. */
5479 case R_PPC64_ADDR64_LOCAL
:
5482 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5484 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5485 "in shared libraries and PIEs.\n"),
5486 abfd
, sec
, rel
->r_offset
,
5487 ppc64_elf_howto_table
[r_type
]->name
);
5488 bfd_set_error (bfd_error_bad_value
);
5494 case R_PPC64_TOC16_DS
:
5495 htab
->do_multi_toc
= 1;
5496 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5497 case R_PPC64_TOC16_LO
:
5498 case R_PPC64_TOC16_HI
:
5499 case R_PPC64_TOC16_HA
:
5500 case R_PPC64_TOC16_LO_DS
:
5501 sec
->has_toc_reloc
= 1;
5504 /* This relocation describes the C++ object vtable hierarchy.
5505 Reconstruct it for later use during GC. */
5506 case R_PPC64_GNU_VTINHERIT
:
5507 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5511 /* This relocation describes which C++ vtable entries are actually
5512 used. Record for later use during GC. */
5513 case R_PPC64_GNU_VTENTRY
:
5514 BFD_ASSERT (h
!= NULL
);
5516 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5521 case R_PPC64_REL14_BRTAKEN
:
5522 case R_PPC64_REL14_BRNTAKEN
:
5524 asection
*dest
= NULL
;
5526 /* Heuristic: If jumping outside our section, chances are
5527 we are going to need a stub. */
5530 /* If the sym is weak it may be overridden later, so
5531 don't assume we know where a weak sym lives. */
5532 if (h
->root
.type
== bfd_link_hash_defined
)
5533 dest
= h
->root
.u
.def
.section
;
5537 Elf_Internal_Sym
*isym
;
5539 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5544 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5548 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5553 if (h
!= NULL
&& ifunc
== NULL
)
5555 /* We may need a .plt entry if the function this reloc
5556 refers to is in a shared lib. */
5557 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5560 if (h
->root
.root
.string
[0] == '.'
5561 && h
->root
.root
.string
[1] != '\0')
5562 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5563 if (h
== tga
|| h
== dottga
)
5564 sec
->has_tls_reloc
= 1;
5568 case R_PPC64_TPREL64
:
5569 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5571 info
->flags
|= DF_STATIC_TLS
;
5574 case R_PPC64_DTPMOD64
:
5575 if (rel
+ 1 < rel_end
5576 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5577 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5578 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5580 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5583 case R_PPC64_DTPREL64
:
5584 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5586 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5587 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5588 /* This is the second reloc of a dtpmod, dtprel pair.
5589 Don't mark with TLS_DTPREL. */
5593 sec
->has_tls_reloc
= 1;
5596 struct ppc_link_hash_entry
*eh
;
5597 eh
= (struct ppc_link_hash_entry
*) h
;
5598 eh
->tls_mask
|= tls_type
;
5601 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5602 rel
->r_addend
, tls_type
))
5605 ppc64_sec
= ppc64_elf_section_data (sec
);
5606 if (ppc64_sec
->sec_type
!= sec_toc
)
5610 /* One extra to simplify get_tls_mask. */
5611 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5612 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5613 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5615 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5616 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5617 if (ppc64_sec
->u
.toc
.add
== NULL
)
5619 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5620 ppc64_sec
->sec_type
= sec_toc
;
5622 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5623 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5624 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5626 /* Mark the second slot of a GD or LD entry.
5627 -1 to indicate GD and -2 to indicate LD. */
5628 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5629 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5630 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5631 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5634 case R_PPC64_TPREL16
:
5635 case R_PPC64_TPREL16_LO
:
5636 case R_PPC64_TPREL16_HI
:
5637 case R_PPC64_TPREL16_HA
:
5638 case R_PPC64_TPREL16_DS
:
5639 case R_PPC64_TPREL16_LO_DS
:
5640 case R_PPC64_TPREL16_HIGH
:
5641 case R_PPC64_TPREL16_HIGHA
:
5642 case R_PPC64_TPREL16_HIGHER
:
5643 case R_PPC64_TPREL16_HIGHERA
:
5644 case R_PPC64_TPREL16_HIGHEST
:
5645 case R_PPC64_TPREL16_HIGHESTA
:
5648 info
->flags
|= DF_STATIC_TLS
;
5653 case R_PPC64_ADDR64
:
5654 if (opd_sym_map
!= NULL
5655 && rel
+ 1 < rel_end
5656 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5660 if (h
->root
.root
.string
[0] == '.'
5661 && h
->root
.root
.string
[1] != 0
5662 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5665 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5670 Elf_Internal_Sym
*isym
;
5672 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5677 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5678 if (s
!= NULL
&& s
!= sec
)
5679 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5684 case R_PPC64_ADDR16
:
5685 case R_PPC64_ADDR16_DS
:
5686 case R_PPC64_ADDR16_HA
:
5687 case R_PPC64_ADDR16_HI
:
5688 case R_PPC64_ADDR16_HIGH
:
5689 case R_PPC64_ADDR16_HIGHA
:
5690 case R_PPC64_ADDR16_HIGHER
:
5691 case R_PPC64_ADDR16_HIGHERA
:
5692 case R_PPC64_ADDR16_HIGHEST
:
5693 case R_PPC64_ADDR16_HIGHESTA
:
5694 case R_PPC64_ADDR16_LO
:
5695 case R_PPC64_ADDR16_LO_DS
:
5696 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1
5697 && rel
->r_addend
== 0)
5699 /* We may need a .plt entry if this reloc refers to a
5700 function in a shared lib. */
5701 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5703 h
->pointer_equality_needed
= 1;
5710 case R_PPC64_ADDR14
:
5711 case R_PPC64_ADDR14_BRNTAKEN
:
5712 case R_PPC64_ADDR14_BRTAKEN
:
5713 case R_PPC64_ADDR24
:
5714 case R_PPC64_ADDR32
:
5715 case R_PPC64_UADDR16
:
5716 case R_PPC64_UADDR32
:
5717 case R_PPC64_UADDR64
:
5719 if (h
!= NULL
&& !info
->shared
)
5720 /* We may need a copy reloc. */
5723 /* Don't propagate .opd relocs. */
5724 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5727 /* If we are creating a shared library, and this is a reloc
5728 against a global symbol, or a non PC relative reloc
5729 against a local symbol, then we need to copy the reloc
5730 into the shared library. However, if we are linking with
5731 -Bsymbolic, we do not need to copy a reloc against a
5732 global symbol which is defined in an object we are
5733 including in the link (i.e., DEF_REGULAR is set). At
5734 this point we have not seen all the input files, so it is
5735 possible that DEF_REGULAR is not set now but will be set
5736 later (it is never cleared). In case of a weak definition,
5737 DEF_REGULAR may be cleared later by a strong definition in
5738 a shared library. We account for that possibility below by
5739 storing information in the dyn_relocs field of the hash
5740 table entry. A similar situation occurs when creating
5741 shared libraries and symbol visibility changes render the
5744 If on the other hand, we are creating an executable, we
5745 may need to keep relocations for symbols satisfied by a
5746 dynamic library if we manage to avoid copy relocs for the
5750 && (must_be_dyn_reloc (info
, r_type
)
5752 && (!SYMBOLIC_BIND (info
, h
)
5753 || h
->root
.type
== bfd_link_hash_defweak
5754 || !h
->def_regular
))))
5755 || (ELIMINATE_COPY_RELOCS
5758 && (h
->root
.type
== bfd_link_hash_defweak
5759 || !h
->def_regular
))
5763 /* We must copy these reloc types into the output file.
5764 Create a reloc section in dynobj and make room for
5768 sreloc
= _bfd_elf_make_dynamic_reloc_section
5769 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5775 /* If this is a global symbol, we count the number of
5776 relocations we need for this symbol. */
5779 struct elf_dyn_relocs
*p
;
5780 struct elf_dyn_relocs
**head
;
5782 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5784 if (p
== NULL
|| p
->sec
!= sec
)
5786 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5796 if (!must_be_dyn_reloc (info
, r_type
))
5801 /* Track dynamic relocs needed for local syms too.
5802 We really need local syms available to do this
5804 struct ppc_dyn_relocs
*p
;
5805 struct ppc_dyn_relocs
**head
;
5806 bfd_boolean is_ifunc
;
5809 Elf_Internal_Sym
*isym
;
5811 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5816 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5820 vpp
= &elf_section_data (s
)->local_dynrel
;
5821 head
= (struct ppc_dyn_relocs
**) vpp
;
5822 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5824 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5826 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5828 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5834 p
->ifunc
= is_ifunc
;
5850 /* Merge backend specific data from an object file to the output
5851 object file when linking. */
5854 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5856 unsigned long iflags
, oflags
;
5858 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5861 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5864 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5867 iflags
= elf_elfheader (ibfd
)->e_flags
;
5868 oflags
= elf_elfheader (obfd
)->e_flags
;
5870 if (iflags
& ~EF_PPC64_ABI
)
5872 (*_bfd_error_handler
)
5873 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5874 bfd_set_error (bfd_error_bad_value
);
5877 else if (iflags
!= oflags
&& iflags
!= 0)
5879 (*_bfd_error_handler
)
5880 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5881 ibfd
, iflags
, oflags
);
5882 bfd_set_error (bfd_error_bad_value
);
5886 /* Merge Tag_compatibility attributes and any common GNU ones. */
5887 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5893 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5895 /* Print normal ELF private data. */
5896 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5898 if (elf_elfheader (abfd
)->e_flags
!= 0)
5902 /* xgettext:c-format */
5903 fprintf (file
, _("private flags = 0x%lx:"),
5904 elf_elfheader (abfd
)->e_flags
);
5906 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
5907 fprintf (file
, _(" [abiv%ld]"),
5908 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
5915 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5916 of the code entry point, and its section, which must be in the same
5917 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5920 opd_entry_value (asection
*opd_sec
,
5922 asection
**code_sec
,
5924 bfd_boolean in_code_sec
)
5926 bfd
*opd_bfd
= opd_sec
->owner
;
5927 Elf_Internal_Rela
*relocs
;
5928 Elf_Internal_Rela
*lo
, *hi
, *look
;
5931 /* No relocs implies we are linking a --just-symbols object, or looking
5932 at a final linked executable with addr2line or somesuch. */
5933 if (opd_sec
->reloc_count
== 0)
5935 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
5937 if (contents
== NULL
)
5939 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
5940 return (bfd_vma
) -1;
5941 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
5944 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
5945 if (code_sec
!= NULL
)
5947 asection
*sec
, *likely
= NULL
;
5953 && val
< sec
->vma
+ sec
->size
)
5959 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5961 && (sec
->flags
& SEC_LOAD
) != 0
5962 && (sec
->flags
& SEC_ALLOC
) != 0)
5967 if (code_off
!= NULL
)
5968 *code_off
= val
- likely
->vma
;
5974 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5976 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
5978 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5980 /* Go find the opd reloc at the sym address. */
5982 BFD_ASSERT (lo
!= NULL
);
5983 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5987 look
= lo
+ (hi
- lo
) / 2;
5988 if (look
->r_offset
< offset
)
5990 else if (look
->r_offset
> offset
)
5994 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5996 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5997 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5999 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6000 asection
*sec
= NULL
;
6002 if (symndx
>= symtab_hdr
->sh_info
6003 && elf_sym_hashes (opd_bfd
) != NULL
)
6005 struct elf_link_hash_entry
**sym_hashes
;
6006 struct elf_link_hash_entry
*rh
;
6008 sym_hashes
= elf_sym_hashes (opd_bfd
);
6009 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6012 rh
= elf_follow_link (rh
);
6013 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
6014 || rh
->root
.type
== bfd_link_hash_defweak
);
6015 val
= rh
->root
.u
.def
.value
;
6016 sec
= rh
->root
.u
.def
.section
;
6017 if (sec
->owner
!= opd_bfd
)
6027 Elf_Internal_Sym
*sym
;
6029 if (symndx
< symtab_hdr
->sh_info
)
6031 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6034 size_t symcnt
= symtab_hdr
->sh_info
;
6035 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6040 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6046 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6052 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6055 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6056 val
= sym
->st_value
;
6059 val
+= look
->r_addend
;
6060 if (code_off
!= NULL
)
6062 if (code_sec
!= NULL
)
6064 if (in_code_sec
&& *code_sec
!= sec
)
6069 if (sec
->output_section
!= NULL
)
6070 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6079 /* If the ELF symbol SYM might be a function in SEC, return the
6080 function size and set *CODE_OFF to the function's entry point,
6081 otherwise return zero. */
6083 static bfd_size_type
6084 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6089 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6090 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6094 if (!(sym
->flags
& BSF_SYNTHETIC
))
6095 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6097 if (strcmp (sym
->section
->name
, ".opd") == 0)
6099 if (opd_entry_value (sym
->section
, sym
->value
,
6100 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6102 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6103 symbol. This size has nothing to do with the code size of the
6104 function, which is what we're supposed to return, but the
6105 code size isn't available without looking up the dot-sym.
6106 However, doing that would be a waste of time particularly
6107 since elf_find_function will look at the dot-sym anyway.
6108 Now, elf_find_function will keep the largest size of any
6109 function sym found at the code address of interest, so return
6110 1 here to avoid it incorrectly caching a larger function size
6111 for a small function. This does mean we return the wrong
6112 size for a new-ABI function of size 24, but all that does is
6113 disable caching for such functions. */
6119 if (sym
->section
!= sec
)
6121 *code_off
= sym
->value
;
6128 /* Return true if symbol is defined in a regular object file. */
6131 is_static_defined (struct elf_link_hash_entry
*h
)
6133 return ((h
->root
.type
== bfd_link_hash_defined
6134 || h
->root
.type
== bfd_link_hash_defweak
)
6135 && h
->root
.u
.def
.section
!= NULL
6136 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6139 /* If FDH is a function descriptor symbol, return the associated code
6140 entry symbol if it is defined. Return NULL otherwise. */
6142 static struct ppc_link_hash_entry
*
6143 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6145 if (fdh
->is_func_descriptor
)
6147 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6148 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6149 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6155 /* If FH is a function code entry symbol, return the associated
6156 function descriptor symbol if it is defined. Return NULL otherwise. */
6158 static struct ppc_link_hash_entry
*
6159 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6162 && fh
->oh
->is_func_descriptor
)
6164 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6165 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6166 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6172 /* Mark all our entry sym sections, both opd and code section. */
6175 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6177 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6178 struct bfd_sym_chain
*sym
;
6183 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6185 struct ppc_link_hash_entry
*eh
, *fh
;
6188 eh
= (struct ppc_link_hash_entry
*)
6189 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6192 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6193 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6196 fh
= defined_code_entry (eh
);
6199 sec
= fh
->elf
.root
.u
.def
.section
;
6200 sec
->flags
|= SEC_KEEP
;
6202 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6203 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6204 eh
->elf
.root
.u
.def
.value
,
6205 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6206 sec
->flags
|= SEC_KEEP
;
6208 sec
= eh
->elf
.root
.u
.def
.section
;
6209 sec
->flags
|= SEC_KEEP
;
6213 /* Mark sections containing dynamically referenced symbols. When
6214 building shared libraries, we must assume that any visible symbol is
6218 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6220 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6221 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6222 struct ppc_link_hash_entry
*fdh
;
6223 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6225 /* Dynamic linking info is on the func descriptor sym. */
6226 fdh
= defined_func_desc (eh
);
6230 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6231 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6232 && (eh
->elf
.ref_dynamic
6233 || (eh
->elf
.def_regular
6234 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6235 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6236 && (!info
->executable
6237 || info
->export_dynamic
6240 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6241 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6242 || !bfd_hide_sym_by_version (info
->version_info
,
6243 eh
->elf
.root
.root
.string
)))))
6246 struct ppc_link_hash_entry
*fh
;
6248 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6250 /* Function descriptor syms cause the associated
6251 function code sym section to be marked. */
6252 fh
= defined_code_entry (eh
);
6255 code_sec
= fh
->elf
.root
.u
.def
.section
;
6256 code_sec
->flags
|= SEC_KEEP
;
6258 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6259 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6260 eh
->elf
.root
.u
.def
.value
,
6261 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6262 code_sec
->flags
|= SEC_KEEP
;
6268 /* Return the section that should be marked against GC for a given
6272 ppc64_elf_gc_mark_hook (asection
*sec
,
6273 struct bfd_link_info
*info
,
6274 Elf_Internal_Rela
*rel
,
6275 struct elf_link_hash_entry
*h
,
6276 Elf_Internal_Sym
*sym
)
6280 /* Syms return NULL if we're marking .opd, so we avoid marking all
6281 function sections, as all functions are referenced in .opd. */
6283 if (get_opd_info (sec
) != NULL
)
6288 enum elf_ppc64_reloc_type r_type
;
6289 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6291 r_type
= ELF64_R_TYPE (rel
->r_info
);
6294 case R_PPC64_GNU_VTINHERIT
:
6295 case R_PPC64_GNU_VTENTRY
:
6299 switch (h
->root
.type
)
6301 case bfd_link_hash_defined
:
6302 case bfd_link_hash_defweak
:
6303 eh
= (struct ppc_link_hash_entry
*) h
;
6304 fdh
= defined_func_desc (eh
);
6308 /* Function descriptor syms cause the associated
6309 function code sym section to be marked. */
6310 fh
= defined_code_entry (eh
);
6313 /* They also mark their opd section. */
6314 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6316 rsec
= fh
->elf
.root
.u
.def
.section
;
6318 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6319 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6320 eh
->elf
.root
.u
.def
.value
,
6321 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6322 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6324 rsec
= h
->root
.u
.def
.section
;
6327 case bfd_link_hash_common
:
6328 rsec
= h
->root
.u
.c
.p
->section
;
6332 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6338 struct _opd_sec_data
*opd
;
6340 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6341 opd
= get_opd_info (rsec
);
6342 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6346 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
6353 /* Update the .got, .plt. and dynamic reloc reference counts for the
6354 section being removed. */
6357 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6358 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6360 struct ppc_link_hash_table
*htab
;
6361 Elf_Internal_Shdr
*symtab_hdr
;
6362 struct elf_link_hash_entry
**sym_hashes
;
6363 struct got_entry
**local_got_ents
;
6364 const Elf_Internal_Rela
*rel
, *relend
;
6366 if (info
->relocatable
)
6369 if ((sec
->flags
& SEC_ALLOC
) == 0)
6372 elf_section_data (sec
)->local_dynrel
= NULL
;
6374 htab
= ppc_hash_table (info
);
6378 symtab_hdr
= &elf_symtab_hdr (abfd
);
6379 sym_hashes
= elf_sym_hashes (abfd
);
6380 local_got_ents
= elf_local_got_ents (abfd
);
6382 relend
= relocs
+ sec
->reloc_count
;
6383 for (rel
= relocs
; rel
< relend
; rel
++)
6385 unsigned long r_symndx
;
6386 enum elf_ppc64_reloc_type r_type
;
6387 struct elf_link_hash_entry
*h
= NULL
;
6388 unsigned char tls_type
= 0;
6390 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6391 r_type
= ELF64_R_TYPE (rel
->r_info
);
6392 if (r_symndx
>= symtab_hdr
->sh_info
)
6394 struct ppc_link_hash_entry
*eh
;
6395 struct elf_dyn_relocs
**pp
;
6396 struct elf_dyn_relocs
*p
;
6398 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6399 h
= elf_follow_link (h
);
6400 eh
= (struct ppc_link_hash_entry
*) h
;
6402 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6405 /* Everything must go for SEC. */
6411 if (is_branch_reloc (r_type
))
6413 struct plt_entry
**ifunc
= NULL
;
6416 if (h
->type
== STT_GNU_IFUNC
)
6417 ifunc
= &h
->plt
.plist
;
6419 else if (local_got_ents
!= NULL
)
6421 struct plt_entry
**local_plt
= (struct plt_entry
**)
6422 (local_got_ents
+ symtab_hdr
->sh_info
);
6423 unsigned char *local_got_tls_masks
= (unsigned char *)
6424 (local_plt
+ symtab_hdr
->sh_info
);
6425 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6426 ifunc
= local_plt
+ r_symndx
;
6430 struct plt_entry
*ent
;
6432 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6433 if (ent
->addend
== rel
->r_addend
)
6437 if (ent
->plt
.refcount
> 0)
6438 ent
->plt
.refcount
-= 1;
6445 case R_PPC64_GOT_TLSLD16
:
6446 case R_PPC64_GOT_TLSLD16_LO
:
6447 case R_PPC64_GOT_TLSLD16_HI
:
6448 case R_PPC64_GOT_TLSLD16_HA
:
6449 tls_type
= TLS_TLS
| TLS_LD
;
6452 case R_PPC64_GOT_TLSGD16
:
6453 case R_PPC64_GOT_TLSGD16_LO
:
6454 case R_PPC64_GOT_TLSGD16_HI
:
6455 case R_PPC64_GOT_TLSGD16_HA
:
6456 tls_type
= TLS_TLS
| TLS_GD
;
6459 case R_PPC64_GOT_TPREL16_DS
:
6460 case R_PPC64_GOT_TPREL16_LO_DS
:
6461 case R_PPC64_GOT_TPREL16_HI
:
6462 case R_PPC64_GOT_TPREL16_HA
:
6463 tls_type
= TLS_TLS
| TLS_TPREL
;
6466 case R_PPC64_GOT_DTPREL16_DS
:
6467 case R_PPC64_GOT_DTPREL16_LO_DS
:
6468 case R_PPC64_GOT_DTPREL16_HI
:
6469 case R_PPC64_GOT_DTPREL16_HA
:
6470 tls_type
= TLS_TLS
| TLS_DTPREL
;
6474 case R_PPC64_GOT16_DS
:
6475 case R_PPC64_GOT16_HA
:
6476 case R_PPC64_GOT16_HI
:
6477 case R_PPC64_GOT16_LO
:
6478 case R_PPC64_GOT16_LO_DS
:
6481 struct got_entry
*ent
;
6486 ent
= local_got_ents
[r_symndx
];
6488 for (; ent
!= NULL
; ent
= ent
->next
)
6489 if (ent
->addend
== rel
->r_addend
6490 && ent
->owner
== abfd
6491 && ent
->tls_type
== tls_type
)
6495 if (ent
->got
.refcount
> 0)
6496 ent
->got
.refcount
-= 1;
6500 case R_PPC64_PLT16_HA
:
6501 case R_PPC64_PLT16_HI
:
6502 case R_PPC64_PLT16_LO
:
6506 case R_PPC64_REL14_BRNTAKEN
:
6507 case R_PPC64_REL14_BRTAKEN
:
6511 struct plt_entry
*ent
;
6513 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6514 if (ent
->addend
== rel
->r_addend
)
6516 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6517 ent
->plt
.refcount
-= 1;
6528 /* The maximum size of .sfpr. */
6529 #define SFPR_MAX (218*4)
6531 struct sfpr_def_parms
6533 const char name
[12];
6534 unsigned char lo
, hi
;
6535 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6536 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6539 /* Auto-generate _save*, _rest* functions in .sfpr. */
6542 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6544 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6546 size_t len
= strlen (parm
->name
);
6547 bfd_boolean writing
= FALSE
;
6553 memcpy (sym
, parm
->name
, len
);
6556 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6558 struct elf_link_hash_entry
*h
;
6560 sym
[len
+ 0] = i
/ 10 + '0';
6561 sym
[len
+ 1] = i
% 10 + '0';
6562 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6566 h
->root
.type
= bfd_link_hash_defined
;
6567 h
->root
.u
.def
.section
= htab
->sfpr
;
6568 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6571 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6573 if (htab
->sfpr
->contents
== NULL
)
6575 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6576 if (htab
->sfpr
->contents
== NULL
)
6582 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6584 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6586 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6587 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6595 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6597 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6602 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6604 p
= savegpr0 (abfd
, p
, r
);
6605 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6607 bfd_put_32 (abfd
, BLR
, p
);
6612 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6614 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6619 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6621 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6623 p
= restgpr0 (abfd
, p
, r
);
6624 bfd_put_32 (abfd
, MTLR_R0
, p
);
6628 p
= restgpr0 (abfd
, p
, 30);
6629 p
= restgpr0 (abfd
, p
, 31);
6631 bfd_put_32 (abfd
, BLR
, p
);
6636 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6638 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6643 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6645 p
= savegpr1 (abfd
, p
, r
);
6646 bfd_put_32 (abfd
, BLR
, p
);
6651 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6653 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6658 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6660 p
= restgpr1 (abfd
, p
, r
);
6661 bfd_put_32 (abfd
, BLR
, p
);
6666 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6668 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6673 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6675 p
= savefpr (abfd
, p
, r
);
6676 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6678 bfd_put_32 (abfd
, BLR
, p
);
6683 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6685 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6690 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6692 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6694 p
= restfpr (abfd
, p
, r
);
6695 bfd_put_32 (abfd
, MTLR_R0
, p
);
6699 p
= restfpr (abfd
, p
, 30);
6700 p
= restfpr (abfd
, p
, 31);
6702 bfd_put_32 (abfd
, BLR
, p
);
6707 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6709 p
= savefpr (abfd
, p
, r
);
6710 bfd_put_32 (abfd
, BLR
, p
);
6715 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6717 p
= restfpr (abfd
, p
, r
);
6718 bfd_put_32 (abfd
, BLR
, p
);
6723 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6725 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6727 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6732 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6734 p
= savevr (abfd
, p
, r
);
6735 bfd_put_32 (abfd
, BLR
, p
);
6740 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6742 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6744 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6749 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6751 p
= restvr (abfd
, p
, r
);
6752 bfd_put_32 (abfd
, BLR
, p
);
6756 /* Called via elf_link_hash_traverse to transfer dynamic linking
6757 information on function code symbol entries to their corresponding
6758 function descriptor symbol entries. */
6761 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6763 struct bfd_link_info
*info
;
6764 struct ppc_link_hash_table
*htab
;
6765 struct plt_entry
*ent
;
6766 struct ppc_link_hash_entry
*fh
;
6767 struct ppc_link_hash_entry
*fdh
;
6768 bfd_boolean force_local
;
6770 fh
= (struct ppc_link_hash_entry
*) h
;
6771 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6775 htab
= ppc_hash_table (info
);
6779 /* Resolve undefined references to dot-symbols as the value
6780 in the function descriptor, if we have one in a regular object.
6781 This is to satisfy cases like ".quad .foo". Calls to functions
6782 in dynamic objects are handled elsewhere. */
6783 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6784 && fh
->was_undefined
6785 && (fdh
= defined_func_desc (fh
)) != NULL
6786 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6787 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6788 fdh
->elf
.root
.u
.def
.value
,
6789 &fh
->elf
.root
.u
.def
.section
,
6790 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6792 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6793 fh
->elf
.forced_local
= 1;
6794 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6795 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6798 /* If this is a function code symbol, transfer dynamic linking
6799 information to the function descriptor symbol. */
6803 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6804 if (ent
->plt
.refcount
> 0)
6807 || fh
->elf
.root
.root
.string
[0] != '.'
6808 || fh
->elf
.root
.root
.string
[1] == '\0')
6811 /* Find the corresponding function descriptor symbol. Create it
6812 as undefined if necessary. */
6814 fdh
= lookup_fdh (fh
, htab
);
6816 && !info
->executable
6817 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6818 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6820 fdh
= make_fdh (info
, fh
);
6825 /* Fake function descriptors are made undefweak. If the function
6826 code symbol is strong undefined, make the fake sym the same.
6827 If the function code symbol is defined, then force the fake
6828 descriptor local; We can't support overriding of symbols in a
6829 shared library on a fake descriptor. */
6833 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6835 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6837 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6838 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6840 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6841 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6843 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6848 && !fdh
->elf
.forced_local
6849 && (!info
->executable
6850 || fdh
->elf
.def_dynamic
6851 || fdh
->elf
.ref_dynamic
6852 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6853 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6855 if (fdh
->elf
.dynindx
== -1)
6856 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6858 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6859 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6860 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6861 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6862 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6864 move_plt_plist (fh
, fdh
);
6865 fdh
->elf
.needs_plt
= 1;
6867 fdh
->is_func_descriptor
= 1;
6872 /* Now that the info is on the function descriptor, clear the
6873 function code sym info. Any function code syms for which we
6874 don't have a definition in a regular file, we force local.
6875 This prevents a shared library from exporting syms that have
6876 been imported from another library. Function code syms that
6877 are really in the library we must leave global to prevent the
6878 linker dragging in a definition from a static library. */
6879 force_local
= (!fh
->elf
.def_regular
6881 || !fdh
->elf
.def_regular
6882 || fdh
->elf
.forced_local
);
6883 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6888 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6889 this hook to a) provide some gcc support functions, and b) transfer
6890 dynamic linking information gathered so far on function code symbol
6891 entries, to their corresponding function descriptor symbol entries. */
6894 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6895 struct bfd_link_info
*info
)
6897 struct ppc_link_hash_table
*htab
;
6899 static const struct sfpr_def_parms funcs
[] =
6901 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6902 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6903 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6904 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6905 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6906 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6907 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6908 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6909 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6910 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6911 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6912 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6915 htab
= ppc_hash_table (info
);
6919 if (!info
->relocatable
6920 && htab
->elf
.hgot
!= NULL
)
6922 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6923 /* Make .TOC. defined so as to prevent it being made dynamic.
6924 The wrong value here is fixed later in ppc64_elf_set_toc. */
6925 htab
->elf
.hgot
->type
= STT_OBJECT
;
6926 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
6927 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
6928 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
6929 htab
->elf
.hgot
->def_regular
= 1;
6930 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
6934 if (htab
->sfpr
== NULL
)
6935 /* We don't have any relocs. */
6938 /* Provide any missing _save* and _rest* functions. */
6939 htab
->sfpr
->size
= 0;
6940 if (htab
->params
->save_restore_funcs
)
6941 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6942 if (!sfpr_define (info
, &funcs
[i
]))
6945 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6947 if (htab
->sfpr
->size
== 0)
6948 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6953 /* Return true if we have dynamic relocs that apply to read-only sections. */
6956 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
6958 struct ppc_link_hash_entry
*eh
;
6959 struct elf_dyn_relocs
*p
;
6961 eh
= (struct ppc_link_hash_entry
*) h
;
6962 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6964 asection
*s
= p
->sec
->output_section
;
6966 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6972 /* Adjust a symbol defined by a dynamic object and referenced by a
6973 regular object. The current definition is in some section of the
6974 dynamic object, but we're not including those sections. We have to
6975 change the definition to something the rest of the link can
6979 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6980 struct elf_link_hash_entry
*h
)
6982 struct ppc_link_hash_table
*htab
;
6985 htab
= ppc_hash_table (info
);
6989 /* Deal with function syms. */
6990 if (h
->type
== STT_FUNC
6991 || h
->type
== STT_GNU_IFUNC
6994 /* Clear procedure linkage table information for any symbol that
6995 won't need a .plt entry. */
6996 struct plt_entry
*ent
;
6997 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6998 if (ent
->plt
.refcount
> 0)
7001 || (h
->type
!= STT_GNU_IFUNC
7002 && (SYMBOL_CALLS_LOCAL (info
, h
)
7003 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7004 && h
->root
.type
== bfd_link_hash_undefweak
))))
7006 h
->plt
.plist
= NULL
;
7008 h
->pointer_equality_needed
= 0;
7010 else if (abiversion (info
->output_bfd
) == 2)
7012 /* Taking a function's address in a read/write section
7013 doesn't require us to define the function symbol in the
7014 executable on a global entry stub. A dynamic reloc can
7016 if (h
->pointer_equality_needed
7017 && h
->type
!= STT_GNU_IFUNC
7018 && !readonly_dynrelocs (h
))
7020 h
->pointer_equality_needed
= 0;
7024 /* After adjust_dynamic_symbol, non_got_ref set in the
7025 non-shared case means that we have allocated space in
7026 .dynbss for the symbol and thus dyn_relocs for this
7027 symbol should be discarded.
7028 If we get here we know we are making a PLT entry for this
7029 symbol, and in an executable we'd normally resolve
7030 relocations against this symbol to the PLT entry. Allow
7031 dynamic relocs if the reference is weak, and the dynamic
7032 relocs will not cause text relocation. */
7033 else if (!h
->ref_regular_nonweak
7035 && h
->type
!= STT_GNU_IFUNC
7036 && !readonly_dynrelocs (h
))
7039 /* If making a plt entry, then we don't need copy relocs. */
7044 h
->plt
.plist
= NULL
;
7046 /* If this is a weak symbol, and there is a real definition, the
7047 processor independent code will have arranged for us to see the
7048 real definition first, and we can just use the same value. */
7049 if (h
->u
.weakdef
!= NULL
)
7051 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7052 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7053 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7054 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7055 if (ELIMINATE_COPY_RELOCS
)
7056 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7060 /* If we are creating a shared library, we must presume that the
7061 only references to the symbol are via the global offset table.
7062 For such cases we need not do anything here; the relocations will
7063 be handled correctly by relocate_section. */
7067 /* If there are no references to this symbol that do not use the
7068 GOT, we don't need to generate a copy reloc. */
7069 if (!h
->non_got_ref
)
7072 /* Don't generate a copy reloc for symbols defined in the executable. */
7073 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7076 /* If we didn't find any dynamic relocs in read-only sections, then
7077 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7078 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7084 if (h
->plt
.plist
!= NULL
)
7086 /* We should never get here, but unfortunately there are versions
7087 of gcc out there that improperly (for this ABI) put initialized
7088 function pointers, vtable refs and suchlike in read-only
7089 sections. Allow them to proceed, but warn that this might
7090 break at runtime. */
7091 info
->callbacks
->einfo
7092 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7093 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7094 h
->root
.root
.string
);
7097 /* This is a reference to a symbol defined by a dynamic object which
7098 is not a function. */
7100 /* We must allocate the symbol in our .dynbss section, which will
7101 become part of the .bss section of the executable. There will be
7102 an entry for this symbol in the .dynsym section. The dynamic
7103 object will contain position independent code, so all references
7104 from the dynamic object to this symbol will go through the global
7105 offset table. The dynamic linker will use the .dynsym entry to
7106 determine the address it must put in the global offset table, so
7107 both the dynamic object and the regular object will refer to the
7108 same memory location for the variable. */
7110 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7111 to copy the initial value out of the dynamic object and into the
7112 runtime process image. We need to remember the offset into the
7113 .rela.bss section we are going to use. */
7114 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7116 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7122 return _bfd_elf_adjust_dynamic_copy (h
, s
);
7125 /* If given a function descriptor symbol, hide both the function code
7126 sym and the descriptor. */
7128 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7129 struct elf_link_hash_entry
*h
,
7130 bfd_boolean force_local
)
7132 struct ppc_link_hash_entry
*eh
;
7133 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7135 eh
= (struct ppc_link_hash_entry
*) h
;
7136 if (eh
->is_func_descriptor
)
7138 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7143 struct ppc_link_hash_table
*htab
;
7146 /* We aren't supposed to use alloca in BFD because on
7147 systems which do not have alloca the version in libiberty
7148 calls xmalloc, which might cause the program to crash
7149 when it runs out of memory. This function doesn't have a
7150 return status, so there's no way to gracefully return an
7151 error. So cheat. We know that string[-1] can be safely
7152 accessed; It's either a string in an ELF string table,
7153 or allocated in an objalloc structure. */
7155 p
= eh
->elf
.root
.root
.string
- 1;
7158 htab
= ppc_hash_table (info
);
7162 fh
= (struct ppc_link_hash_entry
*)
7163 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7166 /* Unfortunately, if it so happens that the string we were
7167 looking for was allocated immediately before this string,
7168 then we overwrote the string terminator. That's the only
7169 reason the lookup should fail. */
7172 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7173 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7175 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7176 fh
= (struct ppc_link_hash_entry
*)
7177 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7186 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7191 get_sym_h (struct elf_link_hash_entry
**hp
,
7192 Elf_Internal_Sym
**symp
,
7194 unsigned char **tls_maskp
,
7195 Elf_Internal_Sym
**locsymsp
,
7196 unsigned long r_symndx
,
7199 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7201 if (r_symndx
>= symtab_hdr
->sh_info
)
7203 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7204 struct elf_link_hash_entry
*h
;
7206 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7207 h
= elf_follow_link (h
);
7215 if (symsecp
!= NULL
)
7217 asection
*symsec
= NULL
;
7218 if (h
->root
.type
== bfd_link_hash_defined
7219 || h
->root
.type
== bfd_link_hash_defweak
)
7220 symsec
= h
->root
.u
.def
.section
;
7224 if (tls_maskp
!= NULL
)
7226 struct ppc_link_hash_entry
*eh
;
7228 eh
= (struct ppc_link_hash_entry
*) h
;
7229 *tls_maskp
= &eh
->tls_mask
;
7234 Elf_Internal_Sym
*sym
;
7235 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7237 if (locsyms
== NULL
)
7239 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7240 if (locsyms
== NULL
)
7241 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7242 symtab_hdr
->sh_info
,
7243 0, NULL
, NULL
, NULL
);
7244 if (locsyms
== NULL
)
7246 *locsymsp
= locsyms
;
7248 sym
= locsyms
+ r_symndx
;
7256 if (symsecp
!= NULL
)
7257 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7259 if (tls_maskp
!= NULL
)
7261 struct got_entry
**lgot_ents
;
7262 unsigned char *tls_mask
;
7265 lgot_ents
= elf_local_got_ents (ibfd
);
7266 if (lgot_ents
!= NULL
)
7268 struct plt_entry
**local_plt
= (struct plt_entry
**)
7269 (lgot_ents
+ symtab_hdr
->sh_info
);
7270 unsigned char *lgot_masks
= (unsigned char *)
7271 (local_plt
+ symtab_hdr
->sh_info
);
7272 tls_mask
= &lgot_masks
[r_symndx
];
7274 *tls_maskp
= tls_mask
;
7280 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7281 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7282 type suitable for optimization, and 1 otherwise. */
7285 get_tls_mask (unsigned char **tls_maskp
,
7286 unsigned long *toc_symndx
,
7287 bfd_vma
*toc_addend
,
7288 Elf_Internal_Sym
**locsymsp
,
7289 const Elf_Internal_Rela
*rel
,
7292 unsigned long r_symndx
;
7294 struct elf_link_hash_entry
*h
;
7295 Elf_Internal_Sym
*sym
;
7299 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7300 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7303 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7305 || ppc64_elf_section_data (sec
) == NULL
7306 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7309 /* Look inside a TOC section too. */
7312 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7313 off
= h
->root
.u
.def
.value
;
7316 off
= sym
->st_value
;
7317 off
+= rel
->r_addend
;
7318 BFD_ASSERT (off
% 8 == 0);
7319 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7320 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7321 if (toc_symndx
!= NULL
)
7322 *toc_symndx
= r_symndx
;
7323 if (toc_addend
!= NULL
)
7324 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7325 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7327 if ((h
== NULL
|| is_static_defined (h
))
7328 && (next_r
== -1 || next_r
== -2))
7333 /* Find (or create) an entry in the tocsave hash table. */
7335 static struct tocsave_entry
*
7336 tocsave_find (struct ppc_link_hash_table
*htab
,
7337 enum insert_option insert
,
7338 Elf_Internal_Sym
**local_syms
,
7339 const Elf_Internal_Rela
*irela
,
7342 unsigned long r_indx
;
7343 struct elf_link_hash_entry
*h
;
7344 Elf_Internal_Sym
*sym
;
7345 struct tocsave_entry ent
, *p
;
7347 struct tocsave_entry
**slot
;
7349 r_indx
= ELF64_R_SYM (irela
->r_info
);
7350 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7352 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7354 (*_bfd_error_handler
)
7355 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7360 ent
.offset
= h
->root
.u
.def
.value
;
7362 ent
.offset
= sym
->st_value
;
7363 ent
.offset
+= irela
->r_addend
;
7365 hash
= tocsave_htab_hash (&ent
);
7366 slot
= ((struct tocsave_entry
**)
7367 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7373 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7382 /* Adjust all global syms defined in opd sections. In gcc generated
7383 code for the old ABI, these will already have been done. */
7386 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7388 struct ppc_link_hash_entry
*eh
;
7390 struct _opd_sec_data
*opd
;
7392 if (h
->root
.type
== bfd_link_hash_indirect
)
7395 if (h
->root
.type
!= bfd_link_hash_defined
7396 && h
->root
.type
!= bfd_link_hash_defweak
)
7399 eh
= (struct ppc_link_hash_entry
*) h
;
7400 if (eh
->adjust_done
)
7403 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7404 opd
= get_opd_info (sym_sec
);
7405 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7407 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
7410 /* This entry has been deleted. */
7411 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7414 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7415 if (discarded_section (dsec
))
7417 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7421 eh
->elf
.root
.u
.def
.value
= 0;
7422 eh
->elf
.root
.u
.def
.section
= dsec
;
7425 eh
->elf
.root
.u
.def
.value
+= adjust
;
7426 eh
->adjust_done
= 1;
7431 /* Handles decrementing dynamic reloc counts for the reloc specified by
7432 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7433 have already been determined. */
7436 dec_dynrel_count (bfd_vma r_info
,
7438 struct bfd_link_info
*info
,
7439 Elf_Internal_Sym
**local_syms
,
7440 struct elf_link_hash_entry
*h
,
7441 Elf_Internal_Sym
*sym
)
7443 enum elf_ppc64_reloc_type r_type
;
7444 asection
*sym_sec
= NULL
;
7446 /* Can this reloc be dynamic? This switch, and later tests here
7447 should be kept in sync with the code in check_relocs. */
7448 r_type
= ELF64_R_TYPE (r_info
);
7454 case R_PPC64_TPREL16
:
7455 case R_PPC64_TPREL16_LO
:
7456 case R_PPC64_TPREL16_HI
:
7457 case R_PPC64_TPREL16_HA
:
7458 case R_PPC64_TPREL16_DS
:
7459 case R_PPC64_TPREL16_LO_DS
:
7460 case R_PPC64_TPREL16_HIGH
:
7461 case R_PPC64_TPREL16_HIGHA
:
7462 case R_PPC64_TPREL16_HIGHER
:
7463 case R_PPC64_TPREL16_HIGHERA
:
7464 case R_PPC64_TPREL16_HIGHEST
:
7465 case R_PPC64_TPREL16_HIGHESTA
:
7469 case R_PPC64_TPREL64
:
7470 case R_PPC64_DTPMOD64
:
7471 case R_PPC64_DTPREL64
:
7472 case R_PPC64_ADDR64
:
7476 case R_PPC64_ADDR14
:
7477 case R_PPC64_ADDR14_BRNTAKEN
:
7478 case R_PPC64_ADDR14_BRTAKEN
:
7479 case R_PPC64_ADDR16
:
7480 case R_PPC64_ADDR16_DS
:
7481 case R_PPC64_ADDR16_HA
:
7482 case R_PPC64_ADDR16_HI
:
7483 case R_PPC64_ADDR16_HIGH
:
7484 case R_PPC64_ADDR16_HIGHA
:
7485 case R_PPC64_ADDR16_HIGHER
:
7486 case R_PPC64_ADDR16_HIGHERA
:
7487 case R_PPC64_ADDR16_HIGHEST
:
7488 case R_PPC64_ADDR16_HIGHESTA
:
7489 case R_PPC64_ADDR16_LO
:
7490 case R_PPC64_ADDR16_LO_DS
:
7491 case R_PPC64_ADDR24
:
7492 case R_PPC64_ADDR32
:
7493 case R_PPC64_UADDR16
:
7494 case R_PPC64_UADDR32
:
7495 case R_PPC64_UADDR64
:
7500 if (local_syms
!= NULL
)
7502 unsigned long r_symndx
;
7503 bfd
*ibfd
= sec
->owner
;
7505 r_symndx
= ELF64_R_SYM (r_info
);
7506 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7511 && (must_be_dyn_reloc (info
, r_type
)
7513 && (!SYMBOLIC_BIND (info
, h
)
7514 || h
->root
.type
== bfd_link_hash_defweak
7515 || !h
->def_regular
))))
7516 || (ELIMINATE_COPY_RELOCS
7519 && (h
->root
.type
== bfd_link_hash_defweak
7520 || !h
->def_regular
)))
7527 struct elf_dyn_relocs
*p
;
7528 struct elf_dyn_relocs
**pp
;
7529 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7531 /* elf_gc_sweep may have already removed all dyn relocs associated
7532 with local syms for a given section. Also, symbol flags are
7533 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7534 report a dynreloc miscount. */
7535 if (*pp
== NULL
&& info
->gc_sections
)
7538 while ((p
= *pp
) != NULL
)
7542 if (!must_be_dyn_reloc (info
, r_type
))
7554 struct ppc_dyn_relocs
*p
;
7555 struct ppc_dyn_relocs
**pp
;
7557 bfd_boolean is_ifunc
;
7559 if (local_syms
== NULL
)
7560 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7561 if (sym_sec
== NULL
)
7564 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7565 pp
= (struct ppc_dyn_relocs
**) vpp
;
7567 if (*pp
== NULL
&& info
->gc_sections
)
7570 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7571 while ((p
= *pp
) != NULL
)
7573 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7584 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7586 bfd_set_error (bfd_error_bad_value
);
7590 /* Remove unused Official Procedure Descriptor entries. Currently we
7591 only remove those associated with functions in discarded link-once
7592 sections, or weakly defined functions that have been overridden. It
7593 would be possible to remove many more entries for statically linked
7597 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7600 bfd_boolean some_edited
= FALSE
;
7601 asection
*need_pad
= NULL
;
7602 struct ppc_link_hash_table
*htab
;
7604 htab
= ppc_hash_table (info
);
7608 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7611 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7612 Elf_Internal_Shdr
*symtab_hdr
;
7613 Elf_Internal_Sym
*local_syms
;
7615 struct _opd_sec_data
*opd
;
7616 bfd_boolean need_edit
, add_aux_fields
;
7617 bfd_size_type cnt_16b
= 0;
7619 if (!is_ppc64_elf (ibfd
))
7622 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7623 if (sec
== NULL
|| sec
->size
== 0)
7626 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7629 if (sec
->output_section
== bfd_abs_section_ptr
)
7632 /* Look through the section relocs. */
7633 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7637 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7639 /* Read the relocations. */
7640 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7642 if (relstart
== NULL
)
7645 /* First run through the relocs to check they are sane, and to
7646 determine whether we need to edit this opd section. */
7650 relend
= relstart
+ sec
->reloc_count
;
7651 for (rel
= relstart
; rel
< relend
; )
7653 enum elf_ppc64_reloc_type r_type
;
7654 unsigned long r_symndx
;
7656 struct elf_link_hash_entry
*h
;
7657 Elf_Internal_Sym
*sym
;
7659 /* .opd contains a regular array of 16 or 24 byte entries. We're
7660 only interested in the reloc pointing to a function entry
7662 if (rel
->r_offset
!= offset
7663 || rel
+ 1 >= relend
7664 || (rel
+ 1)->r_offset
!= offset
+ 8)
7666 /* If someone messes with .opd alignment then after a
7667 "ld -r" we might have padding in the middle of .opd.
7668 Also, there's nothing to prevent someone putting
7669 something silly in .opd with the assembler. No .opd
7670 optimization for them! */
7672 (*_bfd_error_handler
)
7673 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7678 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7679 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7681 (*_bfd_error_handler
)
7682 (_("%B: unexpected reloc type %u in .opd section"),
7688 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7689 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7693 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7695 const char *sym_name
;
7697 sym_name
= h
->root
.root
.string
;
7699 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7702 (*_bfd_error_handler
)
7703 (_("%B: undefined sym `%s' in .opd section"),
7709 /* opd entries are always for functions defined in the
7710 current input bfd. If the symbol isn't defined in the
7711 input bfd, then we won't be using the function in this
7712 bfd; It must be defined in a linkonce section in another
7713 bfd, or is weak. It's also possible that we are
7714 discarding the function due to a linker script /DISCARD/,
7715 which we test for via the output_section. */
7716 if (sym_sec
->owner
!= ibfd
7717 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7722 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7724 if (sec
->size
== offset
+ 24)
7729 if (rel
== relend
&& sec
->size
== offset
+ 16)
7737 if (rel
->r_offset
== offset
+ 24)
7739 else if (rel
->r_offset
!= offset
+ 16)
7741 else if (rel
+ 1 < relend
7742 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7743 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7748 else if (rel
+ 2 < relend
7749 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7750 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7759 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7761 if (need_edit
|| add_aux_fields
)
7763 Elf_Internal_Rela
*write_rel
;
7764 Elf_Internal_Shdr
*rel_hdr
;
7765 bfd_byte
*rptr
, *wptr
;
7766 bfd_byte
*new_contents
;
7771 new_contents
= NULL
;
7772 amt
= sec
->size
* sizeof (long) / 8;
7773 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7774 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7775 if (opd
->adjust
== NULL
)
7777 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7779 /* This seems a waste of time as input .opd sections are all
7780 zeros as generated by gcc, but I suppose there's no reason
7781 this will always be so. We might start putting something in
7782 the third word of .opd entries. */
7783 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7786 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7791 if (local_syms
!= NULL
7792 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7794 if (elf_section_data (sec
)->relocs
!= relstart
)
7798 sec
->contents
= loc
;
7799 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7802 elf_section_data (sec
)->relocs
= relstart
;
7804 new_contents
= sec
->contents
;
7807 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7808 if (new_contents
== NULL
)
7812 wptr
= new_contents
;
7813 rptr
= sec
->contents
;
7815 write_rel
= relstart
;
7819 for (rel
= relstart
; rel
< relend
; rel
++)
7821 unsigned long r_symndx
;
7823 struct elf_link_hash_entry
*h
;
7824 Elf_Internal_Sym
*sym
;
7826 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7827 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7831 if (rel
->r_offset
== offset
)
7833 struct ppc_link_hash_entry
*fdh
= NULL
;
7835 /* See if the .opd entry is full 24 byte or
7836 16 byte (with fd_aux entry overlapped with next
7839 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7840 || (rel
+ 3 < relend
7841 && rel
[2].r_offset
== offset
+ 16
7842 && rel
[3].r_offset
== offset
+ 24
7843 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7844 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7848 && h
->root
.root
.string
[0] == '.')
7850 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
7852 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7853 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7857 skip
= (sym_sec
->owner
!= ibfd
7858 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7861 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7863 /* Arrange for the function descriptor sym
7865 fdh
->elf
.root
.u
.def
.value
= 0;
7866 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7868 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7872 /* We'll be keeping this opd entry. */
7876 /* Redefine the function descriptor symbol to
7877 this location in the opd section. It is
7878 necessary to update the value here rather
7879 than using an array of adjustments as we do
7880 for local symbols, because various places
7881 in the generic ELF code use the value
7882 stored in u.def.value. */
7883 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7884 fdh
->adjust_done
= 1;
7887 /* Local syms are a bit tricky. We could
7888 tweak them as they can be cached, but
7889 we'd need to look through the local syms
7890 for the function descriptor sym which we
7891 don't have at the moment. So keep an
7892 array of adjustments. */
7893 opd
->adjust
[rel
->r_offset
/ 8]
7894 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7897 memcpy (wptr
, rptr
, opd_ent_size
);
7898 wptr
+= opd_ent_size
;
7899 if (add_aux_fields
&& opd_ent_size
== 16)
7901 memset (wptr
, '\0', 8);
7905 rptr
+= opd_ent_size
;
7906 offset
+= opd_ent_size
;
7912 && !info
->relocatable
7913 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7919 /* We need to adjust any reloc offsets to point to the
7920 new opd entries. While we're at it, we may as well
7921 remove redundant relocs. */
7922 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7923 if (write_rel
!= rel
)
7924 memcpy (write_rel
, rel
, sizeof (*rel
));
7929 sec
->size
= wptr
- new_contents
;
7930 sec
->reloc_count
= write_rel
- relstart
;
7933 free (sec
->contents
);
7934 sec
->contents
= new_contents
;
7937 /* Fudge the header size too, as this is used later in
7938 elf_bfd_final_link if we are emitting relocs. */
7939 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7940 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7943 else if (elf_section_data (sec
)->relocs
!= relstart
)
7946 if (local_syms
!= NULL
7947 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7949 if (!info
->keep_memory
)
7952 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7957 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7959 /* If we are doing a final link and the last .opd entry is just 16 byte
7960 long, add a 8 byte padding after it. */
7961 if (need_pad
!= NULL
&& !info
->relocatable
)
7965 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7967 BFD_ASSERT (need_pad
->size
> 0);
7969 p
= bfd_malloc (need_pad
->size
+ 8);
7973 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7974 p
, 0, need_pad
->size
))
7977 need_pad
->contents
= p
;
7978 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7982 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7986 need_pad
->contents
= p
;
7989 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7990 need_pad
->size
+= 8;
7996 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7999 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8001 struct ppc_link_hash_table
*htab
;
8003 htab
= ppc_hash_table (info
);
8007 if (abiversion (info
->output_bfd
) == 1)
8010 if (htab
->params
->no_multi_toc
)
8011 htab
->do_multi_toc
= 0;
8012 else if (!htab
->do_multi_toc
)
8013 htab
->params
->no_multi_toc
= 1;
8015 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8016 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8017 FALSE
, FALSE
, TRUE
));
8018 /* Move dynamic linking info to the function descriptor sym. */
8019 if (htab
->tls_get_addr
!= NULL
)
8020 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8021 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8022 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8023 FALSE
, FALSE
, TRUE
));
8024 if (!htab
->params
->no_tls_get_addr_opt
)
8026 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8028 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8029 FALSE
, FALSE
, TRUE
);
8031 func_desc_adjust (opt
, info
);
8032 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8033 FALSE
, FALSE
, TRUE
);
8035 && (opt_fd
->root
.type
== bfd_link_hash_defined
8036 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8038 /* If glibc supports an optimized __tls_get_addr call stub,
8039 signalled by the presence of __tls_get_addr_opt, and we'll
8040 be calling __tls_get_addr via a plt call stub, then
8041 make __tls_get_addr point to __tls_get_addr_opt. */
8042 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8043 if (htab
->elf
.dynamic_sections_created
8045 && (tga_fd
->type
== STT_FUNC
8046 || tga_fd
->needs_plt
)
8047 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8048 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8049 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8051 struct plt_entry
*ent
;
8053 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8054 if (ent
->plt
.refcount
> 0)
8058 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8059 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8060 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8061 if (opt_fd
->dynindx
!= -1)
8063 /* Use __tls_get_addr_opt in dynamic relocations. */
8064 opt_fd
->dynindx
= -1;
8065 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8066 opt_fd
->dynstr_index
);
8067 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8070 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8071 tga
= &htab
->tls_get_addr
->elf
;
8072 if (opt
!= NULL
&& tga
!= NULL
)
8074 tga
->root
.type
= bfd_link_hash_indirect
;
8075 tga
->root
.u
.i
.link
= &opt
->root
;
8076 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8077 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8079 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8081 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8082 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8083 if (htab
->tls_get_addr
!= NULL
)
8085 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8086 htab
->tls_get_addr
->is_func
= 1;
8092 htab
->params
->no_tls_get_addr_opt
= TRUE
;
8094 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8097 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8101 branch_reloc_hash_match (const bfd
*ibfd
,
8102 const Elf_Internal_Rela
*rel
,
8103 const struct ppc_link_hash_entry
*hash1
,
8104 const struct ppc_link_hash_entry
*hash2
)
8106 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8107 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8108 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8110 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8112 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8113 struct elf_link_hash_entry
*h
;
8115 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8116 h
= elf_follow_link (h
);
8117 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8123 /* Run through all the TLS relocs looking for optimization
8124 opportunities. The linker has been hacked (see ppc64elf.em) to do
8125 a preliminary section layout so that we know the TLS segment
8126 offsets. We can't optimize earlier because some optimizations need
8127 to know the tp offset, and we need to optimize before allocating
8128 dynamic relocations. */
8131 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8135 struct ppc_link_hash_table
*htab
;
8136 unsigned char *toc_ref
;
8139 if (info
->relocatable
|| !info
->executable
)
8142 htab
= ppc_hash_table (info
);
8146 /* Make two passes over the relocs. On the first pass, mark toc
8147 entries involved with tls relocs, and check that tls relocs
8148 involved in setting up a tls_get_addr call are indeed followed by
8149 such a call. If they are not, we can't do any tls optimization.
8150 On the second pass twiddle tls_mask flags to notify
8151 relocate_section that optimization can be done, and adjust got
8152 and plt refcounts. */
8154 for (pass
= 0; pass
< 2; ++pass
)
8155 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8157 Elf_Internal_Sym
*locsyms
= NULL
;
8158 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8160 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8161 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8163 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8164 bfd_boolean found_tls_get_addr_arg
= 0;
8166 /* Read the relocations. */
8167 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8169 if (relstart
== NULL
)
8175 relend
= relstart
+ sec
->reloc_count
;
8176 for (rel
= relstart
; rel
< relend
; rel
++)
8178 enum elf_ppc64_reloc_type r_type
;
8179 unsigned long r_symndx
;
8180 struct elf_link_hash_entry
*h
;
8181 Elf_Internal_Sym
*sym
;
8183 unsigned char *tls_mask
;
8184 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8186 bfd_boolean ok_tprel
, is_local
;
8187 long toc_ref_index
= 0;
8188 int expecting_tls_get_addr
= 0;
8189 bfd_boolean ret
= FALSE
;
8191 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8192 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8196 if (elf_section_data (sec
)->relocs
!= relstart
)
8198 if (toc_ref
!= NULL
)
8201 && (elf_symtab_hdr (ibfd
).contents
8202 != (unsigned char *) locsyms
))
8209 if (h
->root
.type
== bfd_link_hash_defined
8210 || h
->root
.type
== bfd_link_hash_defweak
)
8211 value
= h
->root
.u
.def
.value
;
8212 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8216 found_tls_get_addr_arg
= 0;
8221 /* Symbols referenced by TLS relocs must be of type
8222 STT_TLS. So no need for .opd local sym adjust. */
8223 value
= sym
->st_value
;
8232 && h
->root
.type
== bfd_link_hash_undefweak
)
8236 value
+= sym_sec
->output_offset
;
8237 value
+= sym_sec
->output_section
->vma
;
8238 value
-= htab
->elf
.tls_sec
->vma
;
8239 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8240 < (bfd_vma
) 1 << 32);
8244 r_type
= ELF64_R_TYPE (rel
->r_info
);
8245 /* If this section has old-style __tls_get_addr calls
8246 without marker relocs, then check that each
8247 __tls_get_addr call reloc is preceded by a reloc
8248 that conceivably belongs to the __tls_get_addr arg
8249 setup insn. If we don't find matching arg setup
8250 relocs, don't do any tls optimization. */
8252 && sec
->has_tls_get_addr_call
8254 && (h
== &htab
->tls_get_addr
->elf
8255 || h
== &htab
->tls_get_addr_fd
->elf
)
8256 && !found_tls_get_addr_arg
8257 && is_branch_reloc (r_type
))
8259 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8260 "TLS optimization disabled\n"),
8261 ibfd
, sec
, rel
->r_offset
);
8266 found_tls_get_addr_arg
= 0;
8269 case R_PPC64_GOT_TLSLD16
:
8270 case R_PPC64_GOT_TLSLD16_LO
:
8271 expecting_tls_get_addr
= 1;
8272 found_tls_get_addr_arg
= 1;
8275 case R_PPC64_GOT_TLSLD16_HI
:
8276 case R_PPC64_GOT_TLSLD16_HA
:
8277 /* These relocs should never be against a symbol
8278 defined in a shared lib. Leave them alone if
8279 that turns out to be the case. */
8286 tls_type
= TLS_TLS
| TLS_LD
;
8289 case R_PPC64_GOT_TLSGD16
:
8290 case R_PPC64_GOT_TLSGD16_LO
:
8291 expecting_tls_get_addr
= 1;
8292 found_tls_get_addr_arg
= 1;
8295 case R_PPC64_GOT_TLSGD16_HI
:
8296 case R_PPC64_GOT_TLSGD16_HA
:
8302 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8304 tls_type
= TLS_TLS
| TLS_GD
;
8307 case R_PPC64_GOT_TPREL16_DS
:
8308 case R_PPC64_GOT_TPREL16_LO_DS
:
8309 case R_PPC64_GOT_TPREL16_HI
:
8310 case R_PPC64_GOT_TPREL16_HA
:
8315 tls_clear
= TLS_TPREL
;
8316 tls_type
= TLS_TLS
| TLS_TPREL
;
8323 found_tls_get_addr_arg
= 1;
8328 case R_PPC64_TOC16_LO
:
8329 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8332 /* Mark this toc entry as referenced by a TLS
8333 code sequence. We can do that now in the
8334 case of R_PPC64_TLS, and after checking for
8335 tls_get_addr for the TOC16 relocs. */
8336 if (toc_ref
== NULL
)
8337 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8338 if (toc_ref
== NULL
)
8342 value
= h
->root
.u
.def
.value
;
8344 value
= sym
->st_value
;
8345 value
+= rel
->r_addend
;
8348 BFD_ASSERT (value
< toc
->size
8349 && toc
->output_offset
% 8 == 0);
8350 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8351 if (r_type
== R_PPC64_TLS
8352 || r_type
== R_PPC64_TLSGD
8353 || r_type
== R_PPC64_TLSLD
)
8355 toc_ref
[toc_ref_index
] = 1;
8359 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8364 expecting_tls_get_addr
= 2;
8367 case R_PPC64_TPREL64
:
8371 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8376 tls_set
= TLS_EXPLICIT
;
8377 tls_clear
= TLS_TPREL
;
8382 case R_PPC64_DTPMOD64
:
8386 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8388 if (rel
+ 1 < relend
8390 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8391 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8395 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8398 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8407 tls_set
= TLS_EXPLICIT
;
8418 if (!expecting_tls_get_addr
8419 || !sec
->has_tls_get_addr_call
)
8422 if (rel
+ 1 < relend
8423 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8425 htab
->tls_get_addr_fd
))
8427 if (expecting_tls_get_addr
== 2)
8429 /* Check for toc tls entries. */
8430 unsigned char *toc_tls
;
8433 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8438 if (toc_tls
!= NULL
)
8440 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8441 found_tls_get_addr_arg
= 1;
8443 toc_ref
[toc_ref_index
] = 1;
8449 if (expecting_tls_get_addr
!= 1)
8452 /* Uh oh, we didn't find the expected call. We
8453 could just mark this symbol to exclude it
8454 from tls optimization but it's safer to skip
8455 the entire optimization. */
8456 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8457 "TLS optimization disabled\n"),
8458 ibfd
, sec
, rel
->r_offset
);
8463 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8465 struct plt_entry
*ent
;
8466 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8469 if (ent
->addend
== 0)
8471 if (ent
->plt
.refcount
> 0)
8473 ent
->plt
.refcount
-= 1;
8474 expecting_tls_get_addr
= 0;
8480 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8482 struct plt_entry
*ent
;
8483 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8486 if (ent
->addend
== 0)
8488 if (ent
->plt
.refcount
> 0)
8489 ent
->plt
.refcount
-= 1;
8497 if ((tls_set
& TLS_EXPLICIT
) == 0)
8499 struct got_entry
*ent
;
8501 /* Adjust got entry for this reloc. */
8505 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8507 for (; ent
!= NULL
; ent
= ent
->next
)
8508 if (ent
->addend
== rel
->r_addend
8509 && ent
->owner
== ibfd
8510 && ent
->tls_type
== tls_type
)
8517 /* We managed to get rid of a got entry. */
8518 if (ent
->got
.refcount
> 0)
8519 ent
->got
.refcount
-= 1;
8524 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8525 we'll lose one or two dyn relocs. */
8526 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8530 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8532 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8538 *tls_mask
|= tls_set
;
8539 *tls_mask
&= ~tls_clear
;
8542 if (elf_section_data (sec
)->relocs
!= relstart
)
8547 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8549 if (!info
->keep_memory
)
8552 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8556 if (toc_ref
!= NULL
)
8561 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8562 the values of any global symbols in a toc section that has been
8563 edited. Globals in toc sections should be a rarity, so this function
8564 sets a flag if any are found in toc sections other than the one just
8565 edited, so that futher hash table traversals can be avoided. */
8567 struct adjust_toc_info
8570 unsigned long *skip
;
8571 bfd_boolean global_toc_syms
;
8574 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8577 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8579 struct ppc_link_hash_entry
*eh
;
8580 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8583 if (h
->root
.type
!= bfd_link_hash_defined
8584 && h
->root
.type
!= bfd_link_hash_defweak
)
8587 eh
= (struct ppc_link_hash_entry
*) h
;
8588 if (eh
->adjust_done
)
8591 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8593 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8594 i
= toc_inf
->toc
->rawsize
>> 3;
8596 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8598 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8600 (*_bfd_error_handler
)
8601 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8604 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8605 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8608 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8609 eh
->adjust_done
= 1;
8611 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8612 toc_inf
->global_toc_syms
= TRUE
;
8617 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8620 ok_lo_toc_insn (unsigned int insn
)
8622 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8623 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8624 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8625 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8626 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8627 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8628 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8629 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8630 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8631 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8632 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8633 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8634 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8635 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8636 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8638 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8639 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8640 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8643 /* Examine all relocs referencing .toc sections in order to remove
8644 unused .toc entries. */
8647 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8650 struct adjust_toc_info toc_inf
;
8651 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8653 htab
->do_toc_opt
= 1;
8654 toc_inf
.global_toc_syms
= TRUE
;
8655 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8657 asection
*toc
, *sec
;
8658 Elf_Internal_Shdr
*symtab_hdr
;
8659 Elf_Internal_Sym
*local_syms
;
8660 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8661 unsigned long *skip
, *drop
;
8662 unsigned char *used
;
8663 unsigned char *keep
, last
, some_unused
;
8665 if (!is_ppc64_elf (ibfd
))
8668 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8671 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8672 || discarded_section (toc
))
8677 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8679 /* Look at sections dropped from the final link. */
8682 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8684 if (sec
->reloc_count
== 0
8685 || !discarded_section (sec
)
8686 || get_opd_info (sec
)
8687 || (sec
->flags
& SEC_ALLOC
) == 0
8688 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8691 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8692 if (relstart
== NULL
)
8695 /* Run through the relocs to see which toc entries might be
8697 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8699 enum elf_ppc64_reloc_type r_type
;
8700 unsigned long r_symndx
;
8702 struct elf_link_hash_entry
*h
;
8703 Elf_Internal_Sym
*sym
;
8706 r_type
= ELF64_R_TYPE (rel
->r_info
);
8713 case R_PPC64_TOC16_LO
:
8714 case R_PPC64_TOC16_HI
:
8715 case R_PPC64_TOC16_HA
:
8716 case R_PPC64_TOC16_DS
:
8717 case R_PPC64_TOC16_LO_DS
:
8721 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8722 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8730 val
= h
->root
.u
.def
.value
;
8732 val
= sym
->st_value
;
8733 val
+= rel
->r_addend
;
8735 if (val
>= toc
->size
)
8738 /* Anything in the toc ought to be aligned to 8 bytes.
8739 If not, don't mark as unused. */
8745 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8750 skip
[val
>> 3] = ref_from_discarded
;
8753 if (elf_section_data (sec
)->relocs
!= relstart
)
8757 /* For largetoc loads of address constants, we can convert
8758 . addis rx,2,addr@got@ha
8759 . ld ry,addr@got@l(rx)
8761 . addis rx,2,addr@toc@ha
8762 . addi ry,rx,addr@toc@l
8763 when addr is within 2G of the toc pointer. This then means
8764 that the word storing "addr" in the toc is no longer needed. */
8766 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8767 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8768 && toc
->reloc_count
!= 0)
8770 /* Read toc relocs. */
8771 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8773 if (toc_relocs
== NULL
)
8776 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8778 enum elf_ppc64_reloc_type r_type
;
8779 unsigned long r_symndx
;
8781 struct elf_link_hash_entry
*h
;
8782 Elf_Internal_Sym
*sym
;
8785 r_type
= ELF64_R_TYPE (rel
->r_info
);
8786 if (r_type
!= R_PPC64_ADDR64
)
8789 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8790 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8795 || discarded_section (sym_sec
))
8798 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8803 if (h
->type
== STT_GNU_IFUNC
)
8805 val
= h
->root
.u
.def
.value
;
8809 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8811 val
= sym
->st_value
;
8813 val
+= rel
->r_addend
;
8814 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8816 /* We don't yet know the exact toc pointer value, but we
8817 know it will be somewhere in the toc section. Don't
8818 optimize if the difference from any possible toc
8819 pointer is outside [ff..f80008000, 7fff7fff]. */
8820 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8821 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8824 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8825 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8830 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8835 skip
[rel
->r_offset
>> 3]
8836 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8843 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8847 if (local_syms
!= NULL
8848 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8852 && elf_section_data (sec
)->relocs
!= relstart
)
8854 if (toc_relocs
!= NULL
8855 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8862 /* Now check all kept sections that might reference the toc.
8863 Check the toc itself last. */
8864 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8867 sec
= (sec
== toc
? NULL
8868 : sec
->next
== NULL
? toc
8869 : sec
->next
== toc
&& toc
->next
? toc
->next
8874 if (sec
->reloc_count
== 0
8875 || discarded_section (sec
)
8876 || get_opd_info (sec
)
8877 || (sec
->flags
& SEC_ALLOC
) == 0
8878 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8881 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8883 if (relstart
== NULL
)
8889 /* Mark toc entries referenced as used. */
8893 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8895 enum elf_ppc64_reloc_type r_type
;
8896 unsigned long r_symndx
;
8898 struct elf_link_hash_entry
*h
;
8899 Elf_Internal_Sym
*sym
;
8901 enum {no_check
, check_lo
, check_ha
} insn_check
;
8903 r_type
= ELF64_R_TYPE (rel
->r_info
);
8907 insn_check
= no_check
;
8910 case R_PPC64_GOT_TLSLD16_HA
:
8911 case R_PPC64_GOT_TLSGD16_HA
:
8912 case R_PPC64_GOT_TPREL16_HA
:
8913 case R_PPC64_GOT_DTPREL16_HA
:
8914 case R_PPC64_GOT16_HA
:
8915 case R_PPC64_TOC16_HA
:
8916 insn_check
= check_ha
;
8919 case R_PPC64_GOT_TLSLD16_LO
:
8920 case R_PPC64_GOT_TLSGD16_LO
:
8921 case R_PPC64_GOT_TPREL16_LO_DS
:
8922 case R_PPC64_GOT_DTPREL16_LO_DS
:
8923 case R_PPC64_GOT16_LO
:
8924 case R_PPC64_GOT16_LO_DS
:
8925 case R_PPC64_TOC16_LO
:
8926 case R_PPC64_TOC16_LO_DS
:
8927 insn_check
= check_lo
;
8931 if (insn_check
!= no_check
)
8933 bfd_vma off
= rel
->r_offset
& ~3;
8934 unsigned char buf
[4];
8937 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8942 insn
= bfd_get_32 (ibfd
, buf
);
8943 if (insn_check
== check_lo
8944 ? !ok_lo_toc_insn (insn
)
8945 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8946 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8950 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8951 sprintf (str
, "%#08x", insn
);
8952 info
->callbacks
->einfo
8953 (_("%P: %H: toc optimization is not supported for"
8954 " %s instruction.\n"),
8955 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8962 case R_PPC64_TOC16_LO
:
8963 case R_PPC64_TOC16_HI
:
8964 case R_PPC64_TOC16_HA
:
8965 case R_PPC64_TOC16_DS
:
8966 case R_PPC64_TOC16_LO_DS
:
8967 /* In case we're taking addresses of toc entries. */
8968 case R_PPC64_ADDR64
:
8975 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8976 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8987 val
= h
->root
.u
.def
.value
;
8989 val
= sym
->st_value
;
8990 val
+= rel
->r_addend
;
8992 if (val
>= toc
->size
)
8995 if ((skip
[val
>> 3] & can_optimize
) != 0)
9002 case R_PPC64_TOC16_HA
:
9005 case R_PPC64_TOC16_LO_DS
:
9006 off
= rel
->r_offset
;
9007 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9008 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9014 if ((opc
& (0x3f << 2)) == (58u << 2))
9019 /* Wrong sort of reloc, or not a ld. We may
9020 as well clear ref_from_discarded too. */
9027 /* For the toc section, we only mark as used if this
9028 entry itself isn't unused. */
9029 else if ((used
[rel
->r_offset
>> 3]
9030 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9033 /* Do all the relocs again, to catch reference
9042 if (elf_section_data (sec
)->relocs
!= relstart
)
9046 /* Merge the used and skip arrays. Assume that TOC
9047 doublewords not appearing as either used or unused belong
9048 to to an entry more than one doubleword in size. */
9049 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9050 drop
< skip
+ (toc
->size
+ 7) / 8;
9055 *drop
&= ~ref_from_discarded
;
9056 if ((*drop
& can_optimize
) != 0)
9060 else if ((*drop
& ref_from_discarded
) != 0)
9063 last
= ref_from_discarded
;
9073 bfd_byte
*contents
, *src
;
9075 Elf_Internal_Sym
*sym
;
9076 bfd_boolean local_toc_syms
= FALSE
;
9078 /* Shuffle the toc contents, and at the same time convert the
9079 skip array from booleans into offsets. */
9080 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9083 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9085 for (src
= contents
, off
= 0, drop
= skip
;
9086 src
< contents
+ toc
->size
;
9089 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9094 memcpy (src
- off
, src
, 8);
9098 toc
->rawsize
= toc
->size
;
9099 toc
->size
= src
- contents
- off
;
9101 /* Adjust addends for relocs against the toc section sym,
9102 and optimize any accesses we can. */
9103 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9105 if (sec
->reloc_count
== 0
9106 || discarded_section (sec
))
9109 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9111 if (relstart
== NULL
)
9114 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9116 enum elf_ppc64_reloc_type r_type
;
9117 unsigned long r_symndx
;
9119 struct elf_link_hash_entry
*h
;
9122 r_type
= ELF64_R_TYPE (rel
->r_info
);
9129 case R_PPC64_TOC16_LO
:
9130 case R_PPC64_TOC16_HI
:
9131 case R_PPC64_TOC16_HA
:
9132 case R_PPC64_TOC16_DS
:
9133 case R_PPC64_TOC16_LO_DS
:
9134 case R_PPC64_ADDR64
:
9138 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9139 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9147 val
= h
->root
.u
.def
.value
;
9150 val
= sym
->st_value
;
9152 local_toc_syms
= TRUE
;
9155 val
+= rel
->r_addend
;
9157 if (val
> toc
->rawsize
)
9159 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9161 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9163 Elf_Internal_Rela
*tocrel
9164 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9165 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9169 case R_PPC64_TOC16_HA
:
9170 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9173 case R_PPC64_TOC16_LO_DS
:
9174 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9178 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9180 info
->callbacks
->einfo
9181 (_("%P: %H: %s references "
9182 "optimized away TOC entry\n"),
9183 ibfd
, sec
, rel
->r_offset
,
9184 ppc64_elf_howto_table
[r_type
]->name
);
9185 bfd_set_error (bfd_error_bad_value
);
9188 rel
->r_addend
= tocrel
->r_addend
;
9189 elf_section_data (sec
)->relocs
= relstart
;
9193 if (h
!= NULL
|| sym
->st_value
!= 0)
9196 rel
->r_addend
-= skip
[val
>> 3];
9197 elf_section_data (sec
)->relocs
= relstart
;
9200 if (elf_section_data (sec
)->relocs
!= relstart
)
9204 /* We shouldn't have local or global symbols defined in the TOC,
9205 but handle them anyway. */
9206 if (local_syms
!= NULL
)
9207 for (sym
= local_syms
;
9208 sym
< local_syms
+ symtab_hdr
->sh_info
;
9210 if (sym
->st_value
!= 0
9211 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9215 if (sym
->st_value
> toc
->rawsize
)
9216 i
= toc
->rawsize
>> 3;
9218 i
= sym
->st_value
>> 3;
9220 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9223 (*_bfd_error_handler
)
9224 (_("%s defined on removed toc entry"),
9225 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9228 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9229 sym
->st_value
= (bfd_vma
) i
<< 3;
9232 sym
->st_value
-= skip
[i
];
9233 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9236 /* Adjust any global syms defined in this toc input section. */
9237 if (toc_inf
.global_toc_syms
)
9240 toc_inf
.skip
= skip
;
9241 toc_inf
.global_toc_syms
= FALSE
;
9242 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9246 if (toc
->reloc_count
!= 0)
9248 Elf_Internal_Shdr
*rel_hdr
;
9249 Elf_Internal_Rela
*wrel
;
9252 /* Remove unused toc relocs, and adjust those we keep. */
9253 if (toc_relocs
== NULL
)
9254 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9256 if (toc_relocs
== NULL
)
9260 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9261 if ((skip
[rel
->r_offset
>> 3]
9262 & (ref_from_discarded
| can_optimize
)) == 0)
9264 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9265 wrel
->r_info
= rel
->r_info
;
9266 wrel
->r_addend
= rel
->r_addend
;
9269 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9270 &local_syms
, NULL
, NULL
))
9273 elf_section_data (toc
)->relocs
= toc_relocs
;
9274 toc
->reloc_count
= wrel
- toc_relocs
;
9275 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9276 sz
= rel_hdr
->sh_entsize
;
9277 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9280 else if (toc_relocs
!= NULL
9281 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9284 if (local_syms
!= NULL
9285 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9287 if (!info
->keep_memory
)
9290 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9298 /* Return true iff input section I references the TOC using
9299 instructions limited to +/-32k offsets. */
9302 ppc64_elf_has_small_toc_reloc (asection
*i
)
9304 return (is_ppc64_elf (i
->owner
)
9305 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9308 /* Allocate space for one GOT entry. */
9311 allocate_got (struct elf_link_hash_entry
*h
,
9312 struct bfd_link_info
*info
,
9313 struct got_entry
*gent
)
9315 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9317 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9318 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9320 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9321 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9322 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9324 gent
->got
.offset
= got
->size
;
9325 got
->size
+= entsize
;
9327 dyn
= htab
->elf
.dynamic_sections_created
;
9328 if (h
->type
== STT_GNU_IFUNC
)
9330 htab
->elf
.irelplt
->size
+= rentsize
;
9331 htab
->got_reli_size
+= rentsize
;
9333 else if ((info
->shared
9334 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9335 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9336 || h
->root
.type
!= bfd_link_hash_undefweak
))
9338 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9339 relgot
->size
+= rentsize
;
9343 /* This function merges got entries in the same toc group. */
9346 merge_got_entries (struct got_entry
**pent
)
9348 struct got_entry
*ent
, *ent2
;
9350 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9351 if (!ent
->is_indirect
)
9352 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9353 if (!ent2
->is_indirect
9354 && ent2
->addend
== ent
->addend
9355 && ent2
->tls_type
== ent
->tls_type
9356 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9358 ent2
->is_indirect
= TRUE
;
9359 ent2
->got
.ent
= ent
;
9363 /* Allocate space in .plt, .got and associated reloc sections for
9367 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9369 struct bfd_link_info
*info
;
9370 struct ppc_link_hash_table
*htab
;
9372 struct ppc_link_hash_entry
*eh
;
9373 struct elf_dyn_relocs
*p
;
9374 struct got_entry
**pgent
, *gent
;
9376 if (h
->root
.type
== bfd_link_hash_indirect
)
9379 info
= (struct bfd_link_info
*) inf
;
9380 htab
= ppc_hash_table (info
);
9384 if ((htab
->elf
.dynamic_sections_created
9386 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
9387 || h
->type
== STT_GNU_IFUNC
)
9389 struct plt_entry
*pent
;
9390 bfd_boolean doneone
= FALSE
;
9391 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9392 if (pent
->plt
.refcount
> 0)
9394 if (!htab
->elf
.dynamic_sections_created
9395 || h
->dynindx
== -1)
9398 pent
->plt
.offset
= s
->size
;
9399 s
->size
+= PLT_ENTRY_SIZE (htab
);
9400 s
= htab
->elf
.irelplt
;
9404 /* If this is the first .plt entry, make room for the special
9408 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9410 pent
->plt
.offset
= s
->size
;
9412 /* Make room for this entry. */
9413 s
->size
+= PLT_ENTRY_SIZE (htab
);
9415 /* Make room for the .glink code. */
9418 s
->size
+= GLINK_CALL_STUB_SIZE
;
9421 /* We need bigger stubs past index 32767. */
9422 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9429 /* We also need to make an entry in the .rela.plt section. */
9430 s
= htab
->elf
.srelplt
;
9432 s
->size
+= sizeof (Elf64_External_Rela
);
9436 pent
->plt
.offset
= (bfd_vma
) -1;
9439 h
->plt
.plist
= NULL
;
9445 h
->plt
.plist
= NULL
;
9449 eh
= (struct ppc_link_hash_entry
*) h
;
9450 /* Run through the TLS GD got entries first if we're changing them
9452 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9453 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9454 if (gent
->got
.refcount
> 0
9455 && (gent
->tls_type
& TLS_GD
) != 0)
9457 /* This was a GD entry that has been converted to TPREL. If
9458 there happens to be a TPREL entry we can use that one. */
9459 struct got_entry
*ent
;
9460 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9461 if (ent
->got
.refcount
> 0
9462 && (ent
->tls_type
& TLS_TPREL
) != 0
9463 && ent
->addend
== gent
->addend
9464 && ent
->owner
== gent
->owner
)
9466 gent
->got
.refcount
= 0;
9470 /* If not, then we'll be using our own TPREL entry. */
9471 if (gent
->got
.refcount
!= 0)
9472 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9475 /* Remove any list entry that won't generate a word in the GOT before
9476 we call merge_got_entries. Otherwise we risk merging to empty
9478 pgent
= &h
->got
.glist
;
9479 while ((gent
= *pgent
) != NULL
)
9480 if (gent
->got
.refcount
> 0)
9482 if ((gent
->tls_type
& TLS_LD
) != 0
9485 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9486 *pgent
= gent
->next
;
9489 pgent
= &gent
->next
;
9492 *pgent
= gent
->next
;
9494 if (!htab
->do_multi_toc
)
9495 merge_got_entries (&h
->got
.glist
);
9497 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9498 if (!gent
->is_indirect
)
9500 /* Make sure this symbol is output as a dynamic symbol.
9501 Undefined weak syms won't yet be marked as dynamic,
9502 nor will all TLS symbols. */
9503 if (h
->dynindx
== -1
9505 && h
->type
!= STT_GNU_IFUNC
9506 && htab
->elf
.dynamic_sections_created
)
9508 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9512 if (!is_ppc64_elf (gent
->owner
))
9515 allocate_got (h
, info
, gent
);
9518 if (eh
->dyn_relocs
== NULL
9519 || (!htab
->elf
.dynamic_sections_created
9520 && h
->type
!= STT_GNU_IFUNC
))
9523 /* In the shared -Bsymbolic case, discard space allocated for
9524 dynamic pc-relative relocs against symbols which turn out to be
9525 defined in regular objects. For the normal shared case, discard
9526 space for relocs that have become local due to symbol visibility
9531 /* Relocs that use pc_count are those that appear on a call insn,
9532 or certain REL relocs (see must_be_dyn_reloc) that can be
9533 generated via assembly. We want calls to protected symbols to
9534 resolve directly to the function rather than going via the plt.
9535 If people want function pointer comparisons to work as expected
9536 then they should avoid writing weird assembly. */
9537 if (SYMBOL_CALLS_LOCAL (info
, h
))
9539 struct elf_dyn_relocs
**pp
;
9541 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9543 p
->count
-= p
->pc_count
;
9552 /* Also discard relocs on undefined weak syms with non-default
9554 if (eh
->dyn_relocs
!= NULL
9555 && h
->root
.type
== bfd_link_hash_undefweak
)
9557 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9558 eh
->dyn_relocs
= NULL
;
9560 /* Make sure this symbol is output as a dynamic symbol.
9561 Undefined weak syms won't yet be marked as dynamic. */
9562 else if (h
->dynindx
== -1
9563 && !h
->forced_local
)
9565 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9570 else if (h
->type
== STT_GNU_IFUNC
)
9572 if (!h
->non_got_ref
)
9573 eh
->dyn_relocs
= NULL
;
9575 else if (ELIMINATE_COPY_RELOCS
)
9577 /* For the non-shared case, discard space for relocs against
9578 symbols which turn out to need copy relocs or are not
9584 /* Make sure this symbol is output as a dynamic symbol.
9585 Undefined weak syms won't yet be marked as dynamic. */
9586 if (h
->dynindx
== -1
9587 && !h
->forced_local
)
9589 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9593 /* If that succeeded, we know we'll be keeping all the
9595 if (h
->dynindx
!= -1)
9599 eh
->dyn_relocs
= NULL
;
9604 /* Finally, allocate space. */
9605 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9607 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9608 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9609 sreloc
= htab
->elf
.irelplt
;
9610 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9616 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9617 to set up space for global entry stubs. These are put in glink,
9618 after the branch table. */
9621 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9623 struct bfd_link_info
*info
;
9624 struct ppc_link_hash_table
*htab
;
9625 struct plt_entry
*pent
;
9628 if (h
->root
.type
== bfd_link_hash_indirect
)
9631 if (!h
->pointer_equality_needed
)
9638 htab
= ppc_hash_table (info
);
9643 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9644 if (pent
->plt
.offset
!= (bfd_vma
) -1
9645 && pent
->addend
== 0)
9647 /* For ELFv2, if this symbol is not defined in a regular file
9648 and we are not generating a shared library or pie, then we
9649 need to define the symbol in the executable on a call stub.
9650 This is to avoid text relocations. */
9651 s
->size
= (s
->size
+ 15) & -16;
9652 h
->root
.u
.def
.section
= s
;
9653 h
->root
.u
.def
.value
= s
->size
;
9660 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9661 read-only sections. */
9664 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9666 if (h
->root
.type
== bfd_link_hash_indirect
)
9669 if (readonly_dynrelocs (h
))
9671 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9673 /* Not an error, just cut short the traversal. */
9679 /* Set the sizes of the dynamic sections. */
9682 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9683 struct bfd_link_info
*info
)
9685 struct ppc_link_hash_table
*htab
;
9690 struct got_entry
*first_tlsld
;
9692 htab
= ppc_hash_table (info
);
9696 dynobj
= htab
->elf
.dynobj
;
9700 if (htab
->elf
.dynamic_sections_created
)
9702 /* Set the contents of the .interp section to the interpreter. */
9703 if (info
->executable
)
9705 s
= bfd_get_linker_section (dynobj
, ".interp");
9708 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9709 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9713 /* Set up .got offsets for local syms, and space for local dynamic
9715 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9717 struct got_entry
**lgot_ents
;
9718 struct got_entry
**end_lgot_ents
;
9719 struct plt_entry
**local_plt
;
9720 struct plt_entry
**end_local_plt
;
9721 unsigned char *lgot_masks
;
9722 bfd_size_type locsymcount
;
9723 Elf_Internal_Shdr
*symtab_hdr
;
9725 if (!is_ppc64_elf (ibfd
))
9728 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9730 struct ppc_dyn_relocs
*p
;
9732 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9734 if (!bfd_is_abs_section (p
->sec
)
9735 && bfd_is_abs_section (p
->sec
->output_section
))
9737 /* Input section has been discarded, either because
9738 it is a copy of a linkonce section or due to
9739 linker script /DISCARD/, so we'll be discarding
9742 else if (p
->count
!= 0)
9744 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9746 srel
= htab
->elf
.irelplt
;
9747 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9748 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9749 info
->flags
|= DF_TEXTREL
;
9754 lgot_ents
= elf_local_got_ents (ibfd
);
9758 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9759 locsymcount
= symtab_hdr
->sh_info
;
9760 end_lgot_ents
= lgot_ents
+ locsymcount
;
9761 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9762 end_local_plt
= local_plt
+ locsymcount
;
9763 lgot_masks
= (unsigned char *) end_local_plt
;
9764 s
= ppc64_elf_tdata (ibfd
)->got
;
9765 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9767 struct got_entry
**pent
, *ent
;
9770 while ((ent
= *pent
) != NULL
)
9771 if (ent
->got
.refcount
> 0)
9773 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9775 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9780 unsigned int ent_size
= 8;
9781 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9783 ent
->got
.offset
= s
->size
;
9784 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9789 s
->size
+= ent_size
;
9790 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9792 htab
->elf
.irelplt
->size
+= rel_size
;
9793 htab
->got_reli_size
+= rel_size
;
9795 else if (info
->shared
)
9797 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9798 srel
->size
+= rel_size
;
9807 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9808 for (; local_plt
< end_local_plt
; ++local_plt
)
9810 struct plt_entry
*ent
;
9812 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9813 if (ent
->plt
.refcount
> 0)
9816 ent
->plt
.offset
= s
->size
;
9817 s
->size
+= PLT_ENTRY_SIZE (htab
);
9819 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
9822 ent
->plt
.offset
= (bfd_vma
) -1;
9826 /* Allocate global sym .plt and .got entries, and space for global
9827 sym dynamic relocs. */
9828 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9829 /* Stash the end of glink branch table. */
9830 if (htab
->glink
!= NULL
)
9831 htab
->glink
->rawsize
= htab
->glink
->size
;
9833 if (!htab
->opd_abi
&& !info
->shared
)
9834 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
9837 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9839 struct got_entry
*ent
;
9841 if (!is_ppc64_elf (ibfd
))
9844 ent
= ppc64_tlsld_got (ibfd
);
9845 if (ent
->got
.refcount
> 0)
9847 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9849 ent
->is_indirect
= TRUE
;
9850 ent
->got
.ent
= first_tlsld
;
9854 if (first_tlsld
== NULL
)
9856 s
= ppc64_elf_tdata (ibfd
)->got
;
9857 ent
->got
.offset
= s
->size
;
9862 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9863 srel
->size
+= sizeof (Elf64_External_Rela
);
9868 ent
->got
.offset
= (bfd_vma
) -1;
9871 /* We now have determined the sizes of the various dynamic sections.
9872 Allocate memory for them. */
9874 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9876 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9879 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9880 /* These haven't been allocated yet; don't strip. */
9882 else if (s
== htab
->elf
.sgot
9883 || s
== htab
->elf
.splt
9884 || s
== htab
->elf
.iplt
9886 || s
== htab
->dynbss
)
9888 /* Strip this section if we don't need it; see the
9891 else if (s
== htab
->glink_eh_frame
)
9893 if (!bfd_is_abs_section (s
->output_section
))
9894 /* Not sized yet. */
9897 else if (CONST_STRNEQ (s
->name
, ".rela"))
9901 if (s
!= htab
->elf
.srelplt
)
9904 /* We use the reloc_count field as a counter if we need
9905 to copy relocs into the output file. */
9911 /* It's not one of our sections, so don't allocate space. */
9917 /* If we don't need this section, strip it from the
9918 output file. This is mostly to handle .rela.bss and
9919 .rela.plt. We must create both sections in
9920 create_dynamic_sections, because they must be created
9921 before the linker maps input sections to output
9922 sections. The linker does that before
9923 adjust_dynamic_symbol is called, and it is that
9924 function which decides whether anything needs to go
9925 into these sections. */
9926 s
->flags
|= SEC_EXCLUDE
;
9930 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9933 /* Allocate memory for the section contents. We use bfd_zalloc
9934 here in case unused entries are not reclaimed before the
9935 section's contents are written out. This should not happen,
9936 but this way if it does we get a R_PPC64_NONE reloc in .rela
9937 sections instead of garbage.
9938 We also rely on the section contents being zero when writing
9940 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9941 if (s
->contents
== NULL
)
9945 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9947 if (!is_ppc64_elf (ibfd
))
9950 s
= ppc64_elf_tdata (ibfd
)->got
;
9951 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
9954 s
->flags
|= SEC_EXCLUDE
;
9957 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9958 if (s
->contents
== NULL
)
9962 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9966 s
->flags
|= SEC_EXCLUDE
;
9969 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9970 if (s
->contents
== NULL
)
9978 if (htab
->elf
.dynamic_sections_created
)
9980 bfd_boolean tls_opt
;
9982 /* Add some entries to the .dynamic section. We fill in the
9983 values later, in ppc64_elf_finish_dynamic_sections, but we
9984 must add the entries now so that we get the correct size for
9985 the .dynamic section. The DT_DEBUG entry is filled in by the
9986 dynamic linker and used by the debugger. */
9987 #define add_dynamic_entry(TAG, VAL) \
9988 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9990 if (info
->executable
)
9992 if (!add_dynamic_entry (DT_DEBUG
, 0))
9996 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
9998 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9999 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10000 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10001 || !add_dynamic_entry (DT_JMPREL
, 0)
10002 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10006 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10008 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10009 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10013 tls_opt
= (!htab
->params
->no_tls_get_addr_opt
10014 && htab
->tls_get_addr_fd
!= NULL
10015 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10016 if (tls_opt
|| !htab
->opd_abi
)
10018 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10024 if (!add_dynamic_entry (DT_RELA
, 0)
10025 || !add_dynamic_entry (DT_RELASZ
, 0)
10026 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10029 /* If any dynamic relocs apply to a read-only section,
10030 then we need a DT_TEXTREL entry. */
10031 if ((info
->flags
& DF_TEXTREL
) == 0)
10032 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10034 if ((info
->flags
& DF_TEXTREL
) != 0)
10036 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10041 #undef add_dynamic_entry
10046 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10049 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10051 if (h
->plt
.plist
!= NULL
10053 && !h
->pointer_equality_needed
)
10056 return _bfd_elf_hash_symbol (h
);
10059 /* Determine the type of stub needed, if any, for a call. */
10061 static inline enum ppc_stub_type
10062 ppc_type_of_stub (asection
*input_sec
,
10063 const Elf_Internal_Rela
*rel
,
10064 struct ppc_link_hash_entry
**hash
,
10065 struct plt_entry
**plt_ent
,
10066 bfd_vma destination
,
10067 unsigned long local_off
)
10069 struct ppc_link_hash_entry
*h
= *hash
;
10071 bfd_vma branch_offset
;
10072 bfd_vma max_branch_offset
;
10073 enum elf_ppc64_reloc_type r_type
;
10077 struct plt_entry
*ent
;
10078 struct ppc_link_hash_entry
*fdh
= h
;
10080 && h
->oh
->is_func_descriptor
)
10082 fdh
= ppc_follow_link (h
->oh
);
10086 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10087 if (ent
->addend
== rel
->r_addend
10088 && ent
->plt
.offset
!= (bfd_vma
) -1)
10091 return ppc_stub_plt_call
;
10094 /* Here, we know we don't have a plt entry. If we don't have a
10095 either a defined function descriptor or a defined entry symbol
10096 in a regular object file, then it is pointless trying to make
10097 any other type of stub. */
10098 if (!is_static_defined (&fdh
->elf
)
10099 && !is_static_defined (&h
->elf
))
10100 return ppc_stub_none
;
10102 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10104 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10105 struct plt_entry
**local_plt
= (struct plt_entry
**)
10106 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10107 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10109 if (local_plt
[r_symndx
] != NULL
)
10111 struct plt_entry
*ent
;
10113 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10114 if (ent
->addend
== rel
->r_addend
10115 && ent
->plt
.offset
!= (bfd_vma
) -1)
10118 return ppc_stub_plt_call
;
10123 /* Determine where the call point is. */
10124 location
= (input_sec
->output_offset
10125 + input_sec
->output_section
->vma
10128 branch_offset
= destination
- location
;
10129 r_type
= ELF64_R_TYPE (rel
->r_info
);
10131 /* Determine if a long branch stub is needed. */
10132 max_branch_offset
= 1 << 25;
10133 if (r_type
!= R_PPC64_REL24
)
10134 max_branch_offset
= 1 << 15;
10136 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10137 /* We need a stub. Figure out whether a long_branch or plt_branch
10138 is needed later. */
10139 return ppc_stub_long_branch
;
10141 return ppc_stub_none
;
10144 /* With power7 weakly ordered memory model, it is possible for ld.so
10145 to update a plt entry in one thread and have another thread see a
10146 stale zero toc entry. To avoid this we need some sort of acquire
10147 barrier in the call stub. One solution is to make the load of the
10148 toc word seem to appear to depend on the load of the function entry
10149 word. Another solution is to test for r2 being zero, and branch to
10150 the appropriate glink entry if so.
10152 . fake dep barrier compare
10153 . ld 12,xxx(2) ld 12,xxx(2)
10154 . mtctr 12 mtctr 12
10155 . xor 11,12,12 ld 2,xxx+8(2)
10156 . add 2,2,11 cmpldi 2,0
10157 . ld 2,xxx+8(2) bnectr+
10158 . bctr b <glink_entry>
10160 The solution involving the compare turns out to be faster, so
10161 that's what we use unless the branch won't reach. */
10163 #define ALWAYS_USE_FAKE_DEP 0
10164 #define ALWAYS_EMIT_R2SAVE 0
10166 #define PPC_LO(v) ((v) & 0xffff)
10167 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10168 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10170 static inline unsigned int
10171 plt_stub_size (struct ppc_link_hash_table
*htab
,
10172 struct ppc_stub_hash_entry
*stub_entry
,
10175 unsigned size
= 12;
10177 if (ALWAYS_EMIT_R2SAVE
10178 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10180 if (PPC_HA (off
) != 0)
10185 if (htab
->params
->plt_static_chain
)
10187 if (htab
->params
->plt_thread_safe
)
10189 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10192 if (stub_entry
->h
!= NULL
10193 && (stub_entry
->h
== htab
->tls_get_addr_fd
10194 || stub_entry
->h
== htab
->tls_get_addr
)
10195 && !htab
->params
->no_tls_get_addr_opt
)
10200 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10201 then return the padding needed to do so. */
10202 static inline unsigned int
10203 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10204 struct ppc_stub_hash_entry
*stub_entry
,
10207 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10208 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10209 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
10211 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10212 > (stub_size
& -stub_align
))
10213 return stub_align
- (stub_off
& (stub_align
- 1));
10217 /* Build a .plt call stub. */
10219 static inline bfd_byte
*
10220 build_plt_stub (struct ppc_link_hash_table
*htab
,
10221 struct ppc_stub_hash_entry
*stub_entry
,
10222 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10224 bfd
*obfd
= htab
->params
->stub_bfd
;
10225 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10226 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10227 bfd_boolean plt_thread_safe
= htab
->params
->plt_thread_safe
;
10228 bfd_boolean use_fake_dep
= plt_thread_safe
;
10229 bfd_vma cmp_branch_off
= 0;
10231 if (!ALWAYS_USE_FAKE_DEP
10234 && !(stub_entry
->h
!= NULL
10235 && (stub_entry
->h
== htab
->tls_get_addr_fd
10236 || stub_entry
->h
== htab
->tls_get_addr
)
10237 && !htab
->params
->no_tls_get_addr_opt
))
10239 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10240 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10241 / PLT_ENTRY_SIZE (htab
));
10242 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10245 if (pltindex
> 32768)
10246 glinkoff
+= (pltindex
- 32768) * 4;
10248 + htab
->glink
->output_offset
10249 + htab
->glink
->output_section
->vma
);
10250 from
= (p
- stub_entry
->stub_sec
->contents
10251 + 4 * (ALWAYS_EMIT_R2SAVE
10252 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10253 + 4 * (PPC_HA (offset
) != 0)
10254 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10255 != PPC_HA (offset
))
10256 + 4 * (plt_static_chain
!= 0)
10258 + stub_entry
->stub_sec
->output_offset
10259 + stub_entry
->stub_sec
->output_section
->vma
);
10260 cmp_branch_off
= to
- from
;
10261 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10264 if (PPC_HA (offset
) != 0)
10268 if (ALWAYS_EMIT_R2SAVE
10269 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10270 r
[0].r_offset
+= 4;
10271 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10272 r
[1].r_offset
= r
[0].r_offset
+ 4;
10273 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10274 r
[1].r_addend
= r
[0].r_addend
;
10277 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10279 r
[2].r_offset
= r
[1].r_offset
+ 4;
10280 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10281 r
[2].r_addend
= r
[0].r_addend
;
10285 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10286 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10287 r
[2].r_addend
= r
[0].r_addend
+ 8;
10288 if (plt_static_chain
)
10290 r
[3].r_offset
= r
[2].r_offset
+ 4;
10291 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10292 r
[3].r_addend
= r
[0].r_addend
+ 16;
10297 if (ALWAYS_EMIT_R2SAVE
10298 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10299 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10302 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10303 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10307 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10308 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10311 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10313 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10316 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10321 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10322 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10324 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10325 if (plt_static_chain
)
10326 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10333 if (ALWAYS_EMIT_R2SAVE
10334 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10335 r
[0].r_offset
+= 4;
10336 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10339 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10341 r
[1].r_offset
= r
[0].r_offset
+ 4;
10342 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10343 r
[1].r_addend
= r
[0].r_addend
;
10347 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10348 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10349 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10350 if (plt_static_chain
)
10352 r
[2].r_offset
= r
[1].r_offset
+ 4;
10353 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10354 r
[2].r_addend
= r
[0].r_addend
+ 8;
10359 if (ALWAYS_EMIT_R2SAVE
10360 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10361 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10362 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10364 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10366 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10369 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10374 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10375 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10377 if (plt_static_chain
)
10378 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10379 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10382 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10384 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10385 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10386 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10389 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10393 /* Build a special .plt call stub for __tls_get_addr. */
10395 #define LD_R11_0R3 0xe9630000
10396 #define LD_R12_0R3 0xe9830000
10397 #define MR_R0_R3 0x7c601b78
10398 #define CMPDI_R11_0 0x2c2b0000
10399 #define ADD_R3_R12_R13 0x7c6c6a14
10400 #define BEQLR 0x4d820020
10401 #define MR_R3_R0 0x7c030378
10402 #define STD_R11_0R1 0xf9610000
10403 #define BCTRL 0x4e800421
10404 #define LD_R11_0R1 0xe9610000
10405 #define MTLR_R11 0x7d6803a6
10407 static inline bfd_byte
*
10408 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10409 struct ppc_stub_hash_entry
*stub_entry
,
10410 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10412 bfd
*obfd
= htab
->params
->stub_bfd
;
10414 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10415 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10416 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10417 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10418 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10419 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10420 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10421 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10422 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10425 r
[0].r_offset
+= 9 * 4;
10426 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10427 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10429 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10430 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10431 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10432 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10437 static Elf_Internal_Rela
*
10438 get_relocs (asection
*sec
, int count
)
10440 Elf_Internal_Rela
*relocs
;
10441 struct bfd_elf_section_data
*elfsec_data
;
10443 elfsec_data
= elf_section_data (sec
);
10444 relocs
= elfsec_data
->relocs
;
10445 if (relocs
== NULL
)
10447 bfd_size_type relsize
;
10448 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10449 relocs
= bfd_alloc (sec
->owner
, relsize
);
10450 if (relocs
== NULL
)
10452 elfsec_data
->relocs
= relocs
;
10453 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10454 sizeof (Elf_Internal_Shdr
));
10455 if (elfsec_data
->rela
.hdr
== NULL
)
10457 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10458 * sizeof (Elf64_External_Rela
));
10459 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10460 sec
->reloc_count
= 0;
10462 relocs
+= sec
->reloc_count
;
10463 sec
->reloc_count
+= count
;
10468 get_r2off (struct bfd_link_info
*info
,
10469 struct ppc_stub_hash_entry
*stub_entry
)
10471 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10472 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
10476 /* Support linking -R objects. Get the toc pointer from the
10479 if (!htab
->opd_abi
)
10481 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10482 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10484 if (strcmp (opd
->name
, ".opd") != 0
10485 || opd
->reloc_count
!= 0)
10487 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10488 stub_entry
->h
->elf
.root
.root
.string
);
10489 bfd_set_error (bfd_error_bad_value
);
10492 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10494 r2off
= bfd_get_64 (opd
->owner
, buf
);
10495 r2off
-= elf_gp (info
->output_bfd
);
10497 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
10502 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10504 struct ppc_stub_hash_entry
*stub_entry
;
10505 struct ppc_branch_hash_entry
*br_entry
;
10506 struct bfd_link_info
*info
;
10507 struct ppc_link_hash_table
*htab
;
10512 Elf_Internal_Rela
*r
;
10515 /* Massage our args to the form they really have. */
10516 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10519 htab
= ppc_hash_table (info
);
10523 /* Make a note of the offset within the stubs for this entry. */
10524 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10525 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10527 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10528 switch (stub_entry
->stub_type
)
10530 case ppc_stub_long_branch
:
10531 case ppc_stub_long_branch_r2off
:
10532 /* Branches are relative. This is where we are going to. */
10533 dest
= (stub_entry
->target_value
10534 + stub_entry
->target_section
->output_offset
10535 + stub_entry
->target_section
->output_section
->vma
);
10536 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10539 /* And this is where we are coming from. */
10540 off
-= (stub_entry
->stub_offset
10541 + stub_entry
->stub_sec
->output_offset
10542 + stub_entry
->stub_sec
->output_section
->vma
);
10545 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10547 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10551 htab
->stub_error
= TRUE
;
10554 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10557 if (PPC_HA (r2off
) != 0)
10560 bfd_put_32 (htab
->params
->stub_bfd
,
10561 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10564 bfd_put_32 (htab
->params
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10568 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10570 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10572 info
->callbacks
->einfo
10573 (_("%P: long branch stub `%s' offset overflow\n"),
10574 stub_entry
->root
.string
);
10575 htab
->stub_error
= TRUE
;
10579 if (info
->emitrelocations
)
10581 r
= get_relocs (stub_entry
->stub_sec
, 1);
10584 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10585 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10586 r
->r_addend
= dest
;
10587 if (stub_entry
->h
!= NULL
)
10589 struct elf_link_hash_entry
**hashes
;
10590 unsigned long symndx
;
10591 struct ppc_link_hash_entry
*h
;
10593 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10594 if (hashes
== NULL
)
10596 bfd_size_type hsize
;
10598 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10599 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10600 if (hashes
== NULL
)
10602 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10603 htab
->stub_globals
= 1;
10605 symndx
= htab
->stub_globals
++;
10607 hashes
[symndx
] = &h
->elf
;
10608 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10609 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10610 h
= ppc_follow_link (h
->oh
);
10611 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10612 /* H is an opd symbol. The addend must be zero. */
10616 off
= (h
->elf
.root
.u
.def
.value
10617 + h
->elf
.root
.u
.def
.section
->output_offset
10618 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10619 r
->r_addend
-= off
;
10625 case ppc_stub_plt_branch
:
10626 case ppc_stub_plt_branch_r2off
:
10627 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10628 stub_entry
->root
.string
+ 9,
10630 if (br_entry
== NULL
)
10632 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10633 stub_entry
->root
.string
);
10634 htab
->stub_error
= TRUE
;
10638 dest
= (stub_entry
->target_value
10639 + stub_entry
->target_section
->output_offset
10640 + stub_entry
->target_section
->output_section
->vma
);
10641 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10642 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10644 bfd_put_64 (htab
->brlt
->owner
, dest
,
10645 htab
->brlt
->contents
+ br_entry
->offset
);
10647 if (br_entry
->iter
== htab
->stub_iteration
)
10649 br_entry
->iter
= 0;
10651 if (htab
->relbrlt
!= NULL
)
10653 /* Create a reloc for the branch lookup table entry. */
10654 Elf_Internal_Rela rela
;
10657 rela
.r_offset
= (br_entry
->offset
10658 + htab
->brlt
->output_offset
10659 + htab
->brlt
->output_section
->vma
);
10660 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10661 rela
.r_addend
= dest
;
10663 rl
= htab
->relbrlt
->contents
;
10664 rl
+= (htab
->relbrlt
->reloc_count
++
10665 * sizeof (Elf64_External_Rela
));
10666 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10668 else if (info
->emitrelocations
)
10670 r
= get_relocs (htab
->brlt
, 1);
10673 /* brlt, being SEC_LINKER_CREATED does not go through the
10674 normal reloc processing. Symbols and offsets are not
10675 translated from input file to output file form, so
10676 set up the offset per the output file. */
10677 r
->r_offset
= (br_entry
->offset
10678 + htab
->brlt
->output_offset
10679 + htab
->brlt
->output_section
->vma
);
10680 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10681 r
->r_addend
= dest
;
10685 dest
= (br_entry
->offset
10686 + htab
->brlt
->output_offset
10687 + htab
->brlt
->output_section
->vma
);
10690 - elf_gp (htab
->brlt
->output_section
->owner
)
10691 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10693 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10695 info
->callbacks
->einfo
10696 (_("%P: linkage table error against `%T'\n"),
10697 stub_entry
->root
.string
);
10698 bfd_set_error (bfd_error_bad_value
);
10699 htab
->stub_error
= TRUE
;
10703 if (info
->emitrelocations
)
10705 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10708 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10709 if (bfd_big_endian (info
->output_bfd
))
10710 r
[0].r_offset
+= 2;
10711 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10712 r
[0].r_offset
+= 4;
10713 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10714 r
[0].r_addend
= dest
;
10715 if (PPC_HA (off
) != 0)
10717 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10718 r
[1].r_offset
= r
[0].r_offset
+ 4;
10719 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10720 r
[1].r_addend
= r
[0].r_addend
;
10724 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10726 if (PPC_HA (off
) != 0)
10729 bfd_put_32 (htab
->params
->stub_bfd
,
10730 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10732 bfd_put_32 (htab
->params
->stub_bfd
,
10733 LD_R12_0R12
| PPC_LO (off
), loc
);
10738 bfd_put_32 (htab
->params
->stub_bfd
,
10739 LD_R12_0R2
| PPC_LO (off
), loc
);
10744 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10746 if (r2off
== 0 && htab
->opd_abi
)
10748 htab
->stub_error
= TRUE
;
10752 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10755 if (PPC_HA (off
) != 0)
10758 bfd_put_32 (htab
->params
->stub_bfd
,
10759 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10761 bfd_put_32 (htab
->params
->stub_bfd
,
10762 LD_R12_0R12
| PPC_LO (off
), loc
);
10765 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10767 if (PPC_HA (r2off
) != 0)
10771 bfd_put_32 (htab
->params
->stub_bfd
,
10772 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10774 if (PPC_LO (r2off
) != 0)
10778 bfd_put_32 (htab
->params
->stub_bfd
,
10779 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10783 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10785 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10788 case ppc_stub_plt_call
:
10789 case ppc_stub_plt_call_r2save
:
10790 if (stub_entry
->h
!= NULL
10791 && stub_entry
->h
->is_func_descriptor
10792 && stub_entry
->h
->oh
!= NULL
)
10794 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10796 /* If the old-ABI "dot-symbol" is undefined make it weak so
10797 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10798 FIXME: We used to define the symbol on one of the call
10799 stubs instead, which is why we test symbol section id
10800 against htab->top_id in various places. Likely all
10801 these checks could now disappear. */
10802 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10803 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10804 /* Stop undo_symbol_twiddle changing it back to undefined. */
10805 fh
->was_undefined
= 0;
10808 /* Now build the stub. */
10809 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10810 if (dest
>= (bfd_vma
) -2)
10813 plt
= htab
->elf
.splt
;
10814 if (!htab
->elf
.dynamic_sections_created
10815 || stub_entry
->h
== NULL
10816 || stub_entry
->h
->elf
.dynindx
== -1)
10817 plt
= htab
->elf
.iplt
;
10819 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10821 if (stub_entry
->h
== NULL
10822 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10824 Elf_Internal_Rela rela
;
10827 rela
.r_offset
= dest
;
10829 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10831 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
10832 rela
.r_addend
= (stub_entry
->target_value
10833 + stub_entry
->target_section
->output_offset
10834 + stub_entry
->target_section
->output_section
->vma
);
10836 rl
= (htab
->elf
.irelplt
->contents
10837 + (htab
->elf
.irelplt
->reloc_count
++
10838 * sizeof (Elf64_External_Rela
)));
10839 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10840 stub_entry
->plt_ent
->plt
.offset
|= 1;
10844 - elf_gp (plt
->output_section
->owner
)
10845 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10847 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10849 info
->callbacks
->einfo
10850 (_("%P: linkage table error against `%T'\n"),
10851 stub_entry
->h
!= NULL
10852 ? stub_entry
->h
->elf
.root
.root
.string
10854 bfd_set_error (bfd_error_bad_value
);
10855 htab
->stub_error
= TRUE
;
10859 if (htab
->params
->plt_stub_align
!= 0)
10861 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10863 stub_entry
->stub_sec
->size
+= pad
;
10864 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10869 if (info
->emitrelocations
)
10871 r
= get_relocs (stub_entry
->stub_sec
,
10872 ((PPC_HA (off
) != 0)
10874 ? 2 + (htab
->params
->plt_static_chain
10875 && PPC_HA (off
+ 16) == PPC_HA (off
))
10879 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10880 if (bfd_big_endian (info
->output_bfd
))
10881 r
[0].r_offset
+= 2;
10882 r
[0].r_addend
= dest
;
10884 if (stub_entry
->h
!= NULL
10885 && (stub_entry
->h
== htab
->tls_get_addr_fd
10886 || stub_entry
->h
== htab
->tls_get_addr
)
10887 && !htab
->params
->no_tls_get_addr_opt
)
10888 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10890 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10899 stub_entry
->stub_sec
->size
+= size
;
10901 if (htab
->params
->emit_stub_syms
)
10903 struct elf_link_hash_entry
*h
;
10906 const char *const stub_str
[] = { "long_branch",
10907 "long_branch_r2off",
10909 "plt_branch_r2off",
10913 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10914 len2
= strlen (stub_entry
->root
.string
);
10915 name
= bfd_malloc (len1
+ len2
+ 2);
10918 memcpy (name
, stub_entry
->root
.string
, 9);
10919 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10920 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10921 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10924 if (h
->root
.type
== bfd_link_hash_new
)
10926 h
->root
.type
= bfd_link_hash_defined
;
10927 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10928 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10929 h
->ref_regular
= 1;
10930 h
->def_regular
= 1;
10931 h
->ref_regular_nonweak
= 1;
10932 h
->forced_local
= 1;
10940 /* As above, but don't actually build the stub. Just bump offset so
10941 we know stub section sizes, and select plt_branch stubs where
10942 long_branch stubs won't do. */
10945 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10947 struct ppc_stub_hash_entry
*stub_entry
;
10948 struct bfd_link_info
*info
;
10949 struct ppc_link_hash_table
*htab
;
10953 /* Massage our args to the form they really have. */
10954 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10957 htab
= ppc_hash_table (info
);
10961 if (stub_entry
->stub_type
== ppc_stub_plt_call
10962 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10965 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10966 if (off
>= (bfd_vma
) -2)
10968 plt
= htab
->elf
.splt
;
10969 if (!htab
->elf
.dynamic_sections_created
10970 || stub_entry
->h
== NULL
10971 || stub_entry
->h
->elf
.dynindx
== -1)
10972 plt
= htab
->elf
.iplt
;
10973 off
+= (plt
->output_offset
10974 + plt
->output_section
->vma
10975 - elf_gp (plt
->output_section
->owner
)
10976 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10978 size
= plt_stub_size (htab
, stub_entry
, off
);
10979 if (htab
->params
->plt_stub_align
)
10980 size
+= plt_stub_pad (htab
, stub_entry
, off
);
10981 if (info
->emitrelocations
)
10983 stub_entry
->stub_sec
->reloc_count
10984 += ((PPC_HA (off
) != 0)
10986 ? 2 + (htab
->params
->plt_static_chain
10987 && PPC_HA (off
+ 16) == PPC_HA (off
))
10989 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10994 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10997 bfd_vma local_off
= 0;
10999 off
= (stub_entry
->target_value
11000 + stub_entry
->target_section
->output_offset
11001 + stub_entry
->target_section
->output_section
->vma
);
11002 off
-= (stub_entry
->stub_sec
->size
11003 + stub_entry
->stub_sec
->output_offset
11004 + stub_entry
->stub_sec
->output_section
->vma
);
11006 /* Reset the stub type from the plt variant in case we now
11007 can reach with a shorter stub. */
11008 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11009 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11012 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11014 r2off
= get_r2off (info
, stub_entry
);
11015 if (r2off
== 0 && htab
->opd_abi
)
11017 htab
->stub_error
= TRUE
;
11021 if (PPC_HA (r2off
) != 0)
11026 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11028 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11029 Do the same for -R objects without function descriptors. */
11030 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11031 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11034 struct ppc_branch_hash_entry
*br_entry
;
11036 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11037 stub_entry
->root
.string
+ 9,
11039 if (br_entry
== NULL
)
11041 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11042 stub_entry
->root
.string
);
11043 htab
->stub_error
= TRUE
;
11047 if (br_entry
->iter
!= htab
->stub_iteration
)
11049 br_entry
->iter
= htab
->stub_iteration
;
11050 br_entry
->offset
= htab
->brlt
->size
;
11051 htab
->brlt
->size
+= 8;
11053 if (htab
->relbrlt
!= NULL
)
11054 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11055 else if (info
->emitrelocations
)
11057 htab
->brlt
->reloc_count
+= 1;
11058 htab
->brlt
->flags
|= SEC_RELOC
;
11062 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11063 off
= (br_entry
->offset
11064 + htab
->brlt
->output_offset
11065 + htab
->brlt
->output_section
->vma
11066 - elf_gp (htab
->brlt
->output_section
->owner
)
11067 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
11069 if (info
->emitrelocations
)
11071 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
11072 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11075 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11078 if (PPC_HA (off
) != 0)
11084 if (PPC_HA (off
) != 0)
11087 if (PPC_HA (r2off
) != 0)
11089 if (PPC_LO (r2off
) != 0)
11093 else if (info
->emitrelocations
)
11095 stub_entry
->stub_sec
->reloc_count
+= 1;
11096 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11100 stub_entry
->stub_sec
->size
+= size
;
11104 /* Set up various things so that we can make a list of input sections
11105 for each output section included in the link. Returns -1 on error,
11106 0 when no stubs will be needed, and 1 on success. */
11109 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11112 int top_id
, top_index
, id
;
11114 asection
**input_list
;
11116 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11121 /* Find the top input section id. */
11122 for (input_bfd
= info
->input_bfds
, top_id
= 3;
11124 input_bfd
= input_bfd
->link
.next
)
11126 for (section
= input_bfd
->sections
;
11128 section
= section
->next
)
11130 if (top_id
< section
->id
)
11131 top_id
= section
->id
;
11135 htab
->top_id
= top_id
;
11136 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
11137 htab
->stub_group
= bfd_zmalloc (amt
);
11138 if (htab
->stub_group
== NULL
)
11141 /* Set toc_off for com, und, abs and ind sections. */
11142 for (id
= 0; id
< 3; id
++)
11143 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
11145 /* We can't use output_bfd->section_count here to find the top output
11146 section index as some sections may have been removed, and
11147 strip_excluded_output_sections doesn't renumber the indices. */
11148 for (section
= info
->output_bfd
->sections
, top_index
= 0;
11150 section
= section
->next
)
11152 if (top_index
< section
->index
)
11153 top_index
= section
->index
;
11156 htab
->top_index
= top_index
;
11157 amt
= sizeof (asection
*) * (top_index
+ 1);
11158 input_list
= bfd_zmalloc (amt
);
11159 htab
->input_list
= input_list
;
11160 if (input_list
== NULL
)
11166 /* Set up for first pass at multitoc partitioning. */
11169 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11171 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11173 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11174 htab
->toc_bfd
= NULL
;
11175 htab
->toc_first_sec
= NULL
;
11178 /* The linker repeatedly calls this function for each TOC input section
11179 and linker generated GOT section. Group input bfds such that the toc
11180 within a group is less than 64k in size. */
11183 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11185 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11186 bfd_vma addr
, off
, limit
;
11191 if (!htab
->second_toc_pass
)
11193 /* Keep track of the first .toc or .got section for this input bfd. */
11194 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11198 htab
->toc_bfd
= isec
->owner
;
11199 htab
->toc_first_sec
= isec
;
11202 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11203 off
= addr
- htab
->toc_curr
;
11204 limit
= 0x80008000;
11205 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11207 if (off
+ isec
->size
> limit
)
11209 addr
= (htab
->toc_first_sec
->output_offset
11210 + htab
->toc_first_sec
->output_section
->vma
);
11211 htab
->toc_curr
= addr
;
11214 /* toc_curr is the base address of this toc group. Set elf_gp
11215 for the input section to be the offset relative to the
11216 output toc base plus 0x8000. Making the input elf_gp an
11217 offset allows us to move the toc as a whole without
11218 recalculating input elf_gp. */
11219 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11220 off
+= TOC_BASE_OFF
;
11222 /* Die if someone uses a linker script that doesn't keep input
11223 file .toc and .got together. */
11225 && elf_gp (isec
->owner
) != 0
11226 && elf_gp (isec
->owner
) != off
)
11229 elf_gp (isec
->owner
) = off
;
11233 /* During the second pass toc_first_sec points to the start of
11234 a toc group, and toc_curr is used to track the old elf_gp.
11235 We use toc_bfd to ensure we only look at each bfd once. */
11236 if (htab
->toc_bfd
== isec
->owner
)
11238 htab
->toc_bfd
= isec
->owner
;
11240 if (htab
->toc_first_sec
== NULL
11241 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11243 htab
->toc_curr
= elf_gp (isec
->owner
);
11244 htab
->toc_first_sec
= isec
;
11246 addr
= (htab
->toc_first_sec
->output_offset
11247 + htab
->toc_first_sec
->output_section
->vma
);
11248 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11249 elf_gp (isec
->owner
) = off
;
11254 /* Called via elf_link_hash_traverse to merge GOT entries for global
11258 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11260 if (h
->root
.type
== bfd_link_hash_indirect
)
11263 merge_got_entries (&h
->got
.glist
);
11268 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11272 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11274 struct got_entry
*gent
;
11276 if (h
->root
.type
== bfd_link_hash_indirect
)
11279 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11280 if (!gent
->is_indirect
)
11281 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11285 /* Called on the first multitoc pass after the last call to
11286 ppc64_elf_next_toc_section. This function removes duplicate GOT
11290 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11292 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11293 struct bfd
*ibfd
, *ibfd2
;
11294 bfd_boolean done_something
;
11296 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11298 if (!htab
->do_multi_toc
)
11301 /* Merge global sym got entries within a toc group. */
11302 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11304 /* And tlsld_got. */
11305 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11307 struct got_entry
*ent
, *ent2
;
11309 if (!is_ppc64_elf (ibfd
))
11312 ent
= ppc64_tlsld_got (ibfd
);
11313 if (!ent
->is_indirect
11314 && ent
->got
.offset
!= (bfd_vma
) -1)
11316 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11318 if (!is_ppc64_elf (ibfd2
))
11321 ent2
= ppc64_tlsld_got (ibfd2
);
11322 if (!ent2
->is_indirect
11323 && ent2
->got
.offset
!= (bfd_vma
) -1
11324 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11326 ent2
->is_indirect
= TRUE
;
11327 ent2
->got
.ent
= ent
;
11333 /* Zap sizes of got sections. */
11334 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11335 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11336 htab
->got_reli_size
= 0;
11338 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11340 asection
*got
, *relgot
;
11342 if (!is_ppc64_elf (ibfd
))
11345 got
= ppc64_elf_tdata (ibfd
)->got
;
11348 got
->rawsize
= got
->size
;
11350 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11351 relgot
->rawsize
= relgot
->size
;
11356 /* Now reallocate the got, local syms first. We don't need to
11357 allocate section contents again since we never increase size. */
11358 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11360 struct got_entry
**lgot_ents
;
11361 struct got_entry
**end_lgot_ents
;
11362 struct plt_entry
**local_plt
;
11363 struct plt_entry
**end_local_plt
;
11364 unsigned char *lgot_masks
;
11365 bfd_size_type locsymcount
;
11366 Elf_Internal_Shdr
*symtab_hdr
;
11369 if (!is_ppc64_elf (ibfd
))
11372 lgot_ents
= elf_local_got_ents (ibfd
);
11376 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11377 locsymcount
= symtab_hdr
->sh_info
;
11378 end_lgot_ents
= lgot_ents
+ locsymcount
;
11379 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11380 end_local_plt
= local_plt
+ locsymcount
;
11381 lgot_masks
= (unsigned char *) end_local_plt
;
11382 s
= ppc64_elf_tdata (ibfd
)->got
;
11383 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11385 struct got_entry
*ent
;
11387 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11389 unsigned int ent_size
= 8;
11390 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11392 ent
->got
.offset
= s
->size
;
11393 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11398 s
->size
+= ent_size
;
11399 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11401 htab
->elf
.irelplt
->size
+= rel_size
;
11402 htab
->got_reli_size
+= rel_size
;
11404 else if (info
->shared
)
11406 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11407 srel
->size
+= rel_size
;
11413 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11415 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11417 struct got_entry
*ent
;
11419 if (!is_ppc64_elf (ibfd
))
11422 ent
= ppc64_tlsld_got (ibfd
);
11423 if (!ent
->is_indirect
11424 && ent
->got
.offset
!= (bfd_vma
) -1)
11426 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11427 ent
->got
.offset
= s
->size
;
11431 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11432 srel
->size
+= sizeof (Elf64_External_Rela
);
11437 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11438 if (!done_something
)
11439 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11443 if (!is_ppc64_elf (ibfd
))
11446 got
= ppc64_elf_tdata (ibfd
)->got
;
11449 done_something
= got
->rawsize
!= got
->size
;
11450 if (done_something
)
11455 if (done_something
)
11456 (*htab
->params
->layout_sections_again
) ();
11458 /* Set up for second pass over toc sections to recalculate elf_gp
11459 on input sections. */
11460 htab
->toc_bfd
= NULL
;
11461 htab
->toc_first_sec
= NULL
;
11462 htab
->second_toc_pass
= TRUE
;
11463 return done_something
;
11466 /* Called after second pass of multitoc partitioning. */
11469 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11471 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11473 /* After the second pass, toc_curr tracks the TOC offset used
11474 for code sections below in ppc64_elf_next_input_section. */
11475 htab
->toc_curr
= TOC_BASE_OFF
;
11478 /* No toc references were found in ISEC. If the code in ISEC makes no
11479 calls, then there's no need to use toc adjusting stubs when branching
11480 into ISEC. Actually, indirect calls from ISEC are OK as they will
11481 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11482 needed, and 2 if a cyclical call-graph was found but no other reason
11483 for a stub was detected. If called from the top level, a return of
11484 2 means the same as a return of 0. */
11487 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11491 /* Mark this section as checked. */
11492 isec
->call_check_done
= 1;
11494 /* We know none of our code bearing sections will need toc stubs. */
11495 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11498 if (isec
->size
== 0)
11501 if (isec
->output_section
== NULL
)
11505 if (isec
->reloc_count
!= 0)
11507 Elf_Internal_Rela
*relstart
, *rel
;
11508 Elf_Internal_Sym
*local_syms
;
11509 struct ppc_link_hash_table
*htab
;
11511 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11512 info
->keep_memory
);
11513 if (relstart
== NULL
)
11516 /* Look for branches to outside of this section. */
11518 htab
= ppc_hash_table (info
);
11522 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11524 enum elf_ppc64_reloc_type r_type
;
11525 unsigned long r_symndx
;
11526 struct elf_link_hash_entry
*h
;
11527 struct ppc_link_hash_entry
*eh
;
11528 Elf_Internal_Sym
*sym
;
11530 struct _opd_sec_data
*opd
;
11534 r_type
= ELF64_R_TYPE (rel
->r_info
);
11535 if (r_type
!= R_PPC64_REL24
11536 && r_type
!= R_PPC64_REL14
11537 && r_type
!= R_PPC64_REL14_BRTAKEN
11538 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11541 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11542 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11549 /* Calls to dynamic lib functions go through a plt call stub
11551 eh
= (struct ppc_link_hash_entry
*) h
;
11553 && (eh
->elf
.plt
.plist
!= NULL
11555 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11561 if (sym_sec
== NULL
)
11562 /* Ignore other undefined symbols. */
11565 /* Assume branches to other sections not included in the
11566 link need stubs too, to cover -R and absolute syms. */
11567 if (sym_sec
->output_section
== NULL
)
11574 sym_value
= sym
->st_value
;
11577 if (h
->root
.type
!= bfd_link_hash_defined
11578 && h
->root
.type
!= bfd_link_hash_defweak
)
11580 sym_value
= h
->root
.u
.def
.value
;
11582 sym_value
+= rel
->r_addend
;
11584 /* If this branch reloc uses an opd sym, find the code section. */
11585 opd
= get_opd_info (sym_sec
);
11588 if (h
== NULL
&& opd
->adjust
!= NULL
)
11592 adjust
= opd
->adjust
[sym
->st_value
/ 8];
11594 /* Assume deleted functions won't ever be called. */
11596 sym_value
+= adjust
;
11599 dest
= opd_entry_value (sym_sec
, sym_value
,
11600 &sym_sec
, NULL
, FALSE
);
11601 if (dest
== (bfd_vma
) -1)
11606 + sym_sec
->output_offset
11607 + sym_sec
->output_section
->vma
);
11609 /* Ignore branch to self. */
11610 if (sym_sec
== isec
)
11613 /* If the called function uses the toc, we need a stub. */
11614 if (sym_sec
->has_toc_reloc
11615 || sym_sec
->makes_toc_func_call
)
11621 /* Assume any branch that needs a long branch stub might in fact
11622 need a plt_branch stub. A plt_branch stub uses r2. */
11623 else if (dest
- (isec
->output_offset
11624 + isec
->output_section
->vma
11625 + rel
->r_offset
) + (1 << 25)
11626 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11634 /* If calling back to a section in the process of being
11635 tested, we can't say for sure that no toc adjusting stubs
11636 are needed, so don't return zero. */
11637 else if (sym_sec
->call_check_in_progress
)
11640 /* Branches to another section that itself doesn't have any TOC
11641 references are OK. Recursively call ourselves to check. */
11642 else if (!sym_sec
->call_check_done
)
11646 /* Mark current section as indeterminate, so that other
11647 sections that call back to current won't be marked as
11649 isec
->call_check_in_progress
= 1;
11650 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11651 isec
->call_check_in_progress
= 0;
11662 if (local_syms
!= NULL
11663 && (elf_symtab_hdr (isec
->owner
).contents
11664 != (unsigned char *) local_syms
))
11666 if (elf_section_data (isec
)->relocs
!= relstart
)
11671 && isec
->map_head
.s
!= NULL
11672 && (strcmp (isec
->output_section
->name
, ".init") == 0
11673 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11675 if (isec
->map_head
.s
->has_toc_reloc
11676 || isec
->map_head
.s
->makes_toc_func_call
)
11678 else if (!isec
->map_head
.s
->call_check_done
)
11681 isec
->call_check_in_progress
= 1;
11682 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11683 isec
->call_check_in_progress
= 0;
11690 isec
->makes_toc_func_call
= 1;
11695 /* The linker repeatedly calls this function for each input section,
11696 in the order that input sections are linked into output sections.
11697 Build lists of input sections to determine groupings between which
11698 we may insert linker stubs. */
11701 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11703 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11708 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11709 && isec
->output_section
->index
<= htab
->top_index
)
11711 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11712 /* Steal the link_sec pointer for our list. */
11713 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11714 /* This happens to make the list in reverse order,
11715 which is what we want. */
11716 PREV_SEC (isec
) = *list
;
11720 if (htab
->multi_toc_needed
)
11722 /* Analyse sections that aren't already flagged as needing a
11723 valid toc pointer. Exclude .fixup for the linux kernel.
11724 .fixup contains branches, but only back to the function that
11725 hit an exception. */
11726 if (!(isec
->has_toc_reloc
11727 || (isec
->flags
& SEC_CODE
) == 0
11728 || strcmp (isec
->name
, ".fixup") == 0
11729 || isec
->call_check_done
))
11731 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11734 /* Make all sections use the TOC assigned for this object file.
11735 This will be wrong for pasted sections; We fix that in
11736 check_pasted_section(). */
11737 if (elf_gp (isec
->owner
) != 0)
11738 htab
->toc_curr
= elf_gp (isec
->owner
);
11741 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11745 /* Check that all .init and .fini sections use the same toc, if they
11746 have toc relocs. */
11749 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11751 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11755 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11756 bfd_vma toc_off
= 0;
11759 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11760 if (i
->has_toc_reloc
)
11763 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11764 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11769 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11770 if (i
->makes_toc_func_call
)
11772 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11776 /* Make sure the whole pasted function uses the same toc offset. */
11778 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11779 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11785 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11787 return (check_pasted_section (info
, ".init")
11788 & check_pasted_section (info
, ".fini"));
11791 /* See whether we can group stub sections together. Grouping stub
11792 sections may result in fewer stubs. More importantly, we need to
11793 put all .init* and .fini* stubs at the beginning of the .init or
11794 .fini output sections respectively, because glibc splits the
11795 _init and _fini functions into multiple parts. Putting a stub in
11796 the middle of a function is not a good idea. */
11799 group_sections (struct ppc_link_hash_table
*htab
,
11800 bfd_size_type stub_group_size
,
11801 bfd_boolean stubs_always_before_branch
)
11804 bfd_size_type stub14_group_size
;
11805 bfd_boolean suppress_size_errors
;
11807 suppress_size_errors
= FALSE
;
11808 stub14_group_size
= stub_group_size
;
11809 if (stub_group_size
== 1)
11811 /* Default values. */
11812 if (stubs_always_before_branch
)
11814 stub_group_size
= 0x1e00000;
11815 stub14_group_size
= 0x7800;
11819 stub_group_size
= 0x1c00000;
11820 stub14_group_size
= 0x7000;
11822 suppress_size_errors
= TRUE
;
11825 list
= htab
->input_list
+ htab
->top_index
;
11828 asection
*tail
= *list
;
11829 while (tail
!= NULL
)
11833 bfd_size_type total
;
11834 bfd_boolean big_sec
;
11838 total
= tail
->size
;
11839 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11840 && ppc64_elf_section_data (tail
)->has_14bit_branch
11841 ? stub14_group_size
: stub_group_size
);
11842 if (big_sec
&& !suppress_size_errors
)
11843 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11844 tail
->owner
, tail
);
11845 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11847 while ((prev
= PREV_SEC (curr
)) != NULL
11848 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11849 < (ppc64_elf_section_data (prev
) != NULL
11850 && ppc64_elf_section_data (prev
)->has_14bit_branch
11851 ? stub14_group_size
: stub_group_size
))
11852 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11855 /* OK, the size from the start of CURR to the end is less
11856 than stub_group_size and thus can be handled by one stub
11857 section. (or the tail section is itself larger than
11858 stub_group_size, in which case we may be toast.) We
11859 should really be keeping track of the total size of stubs
11860 added here, as stubs contribute to the final output
11861 section size. That's a little tricky, and this way will
11862 only break if stubs added make the total size more than
11863 2^25, ie. for the default stub_group_size, if stubs total
11864 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11867 prev
= PREV_SEC (tail
);
11868 /* Set up this stub group. */
11869 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11871 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11873 /* But wait, there's more! Input sections up to stub_group_size
11874 bytes before the stub section can be handled by it too.
11875 Don't do this if we have a really large section after the
11876 stubs, as adding more stubs increases the chance that
11877 branches may not reach into the stub section. */
11878 if (!stubs_always_before_branch
&& !big_sec
)
11881 while (prev
!= NULL
11882 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11883 < (ppc64_elf_section_data (prev
) != NULL
11884 && ppc64_elf_section_data (prev
)->has_14bit_branch
11885 ? stub14_group_size
: stub_group_size
))
11886 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11889 prev
= PREV_SEC (tail
);
11890 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11896 while (list
-- != htab
->input_list
);
11897 free (htab
->input_list
);
11901 static const unsigned char glink_eh_frame_cie
[] =
11903 0, 0, 0, 16, /* length. */
11904 0, 0, 0, 0, /* id. */
11905 1, /* CIE version. */
11906 'z', 'R', 0, /* Augmentation string. */
11907 4, /* Code alignment. */
11908 0x78, /* Data alignment. */
11910 1, /* Augmentation size. */
11911 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11912 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
11916 /* Stripping output sections is normally done before dynamic section
11917 symbols have been allocated. This function is called later, and
11918 handles cases like htab->brlt which is mapped to its own output
11922 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11924 if (isec
->size
== 0
11925 && isec
->output_section
->size
== 0
11926 && !(isec
->output_section
->flags
& SEC_KEEP
)
11927 && !bfd_section_removed_from_list (info
->output_bfd
,
11928 isec
->output_section
)
11929 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11931 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11932 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11933 info
->output_bfd
->section_count
--;
11937 /* Determine and set the size of the stub section for a final link.
11939 The basic idea here is to examine all the relocations looking for
11940 PC-relative calls to a target that is unreachable with a "bl"
11944 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
11946 bfd_size_type stub_group_size
;
11947 bfd_boolean stubs_always_before_branch
;
11948 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11953 if (htab
->params
->plt_thread_safe
== -1 && !info
->executable
)
11954 htab
->params
->plt_thread_safe
= 1;
11955 if (!htab
->opd_abi
)
11956 htab
->params
->plt_thread_safe
= 0;
11957 else if (htab
->params
->plt_thread_safe
== -1)
11959 static const char *const thread_starter
[] =
11963 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11965 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11966 "mq_notify", "create_timer",
11971 "GOMP_parallel_start",
11972 "GOMP_parallel_loop_static",
11973 "GOMP_parallel_loop_static_start",
11974 "GOMP_parallel_loop_dynamic",
11975 "GOMP_parallel_loop_dynamic_start",
11976 "GOMP_parallel_loop_guided",
11977 "GOMP_parallel_loop_guided_start",
11978 "GOMP_parallel_loop_runtime",
11979 "GOMP_parallel_loop_runtime_start",
11980 "GOMP_parallel_sections",
11981 "GOMP_parallel_sections_start",
11985 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
11987 struct elf_link_hash_entry
*h
;
11988 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
11989 FALSE
, FALSE
, TRUE
);
11990 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
11991 if (htab
->params
->plt_thread_safe
)
11995 stubs_always_before_branch
= htab
->params
->group_size
< 0;
11996 if (htab
->params
->group_size
< 0)
11997 stub_group_size
= -htab
->params
->group_size
;
11999 stub_group_size
= htab
->params
->group_size
;
12001 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
12006 unsigned int bfd_indx
;
12007 asection
*stub_sec
;
12009 htab
->stub_iteration
+= 1;
12011 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12013 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12015 Elf_Internal_Shdr
*symtab_hdr
;
12017 Elf_Internal_Sym
*local_syms
= NULL
;
12019 if (!is_ppc64_elf (input_bfd
))
12022 /* We'll need the symbol table in a second. */
12023 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12024 if (symtab_hdr
->sh_info
== 0)
12027 /* Walk over each section attached to the input bfd. */
12028 for (section
= input_bfd
->sections
;
12030 section
= section
->next
)
12032 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12034 /* If there aren't any relocs, then there's nothing more
12036 if ((section
->flags
& SEC_RELOC
) == 0
12037 || (section
->flags
& SEC_ALLOC
) == 0
12038 || (section
->flags
& SEC_LOAD
) == 0
12039 || (section
->flags
& SEC_CODE
) == 0
12040 || section
->reloc_count
== 0)
12043 /* If this section is a link-once section that will be
12044 discarded, then don't create any stubs. */
12045 if (section
->output_section
== NULL
12046 || section
->output_section
->owner
!= info
->output_bfd
)
12049 /* Get the relocs. */
12051 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12052 info
->keep_memory
);
12053 if (internal_relocs
== NULL
)
12054 goto error_ret_free_local
;
12056 /* Now examine each relocation. */
12057 irela
= internal_relocs
;
12058 irelaend
= irela
+ section
->reloc_count
;
12059 for (; irela
< irelaend
; irela
++)
12061 enum elf_ppc64_reloc_type r_type
;
12062 unsigned int r_indx
;
12063 enum ppc_stub_type stub_type
;
12064 struct ppc_stub_hash_entry
*stub_entry
;
12065 asection
*sym_sec
, *code_sec
;
12066 bfd_vma sym_value
, code_value
;
12067 bfd_vma destination
;
12068 unsigned long local_off
;
12069 bfd_boolean ok_dest
;
12070 struct ppc_link_hash_entry
*hash
;
12071 struct ppc_link_hash_entry
*fdh
;
12072 struct elf_link_hash_entry
*h
;
12073 Elf_Internal_Sym
*sym
;
12075 const asection
*id_sec
;
12076 struct _opd_sec_data
*opd
;
12077 struct plt_entry
*plt_ent
;
12079 r_type
= ELF64_R_TYPE (irela
->r_info
);
12080 r_indx
= ELF64_R_SYM (irela
->r_info
);
12082 if (r_type
>= R_PPC64_max
)
12084 bfd_set_error (bfd_error_bad_value
);
12085 goto error_ret_free_internal
;
12088 /* Only look for stubs on branch instructions. */
12089 if (r_type
!= R_PPC64_REL24
12090 && r_type
!= R_PPC64_REL14
12091 && r_type
!= R_PPC64_REL14_BRTAKEN
12092 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12095 /* Now determine the call target, its name, value,
12097 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12098 r_indx
, input_bfd
))
12099 goto error_ret_free_internal
;
12100 hash
= (struct ppc_link_hash_entry
*) h
;
12107 sym_value
= sym
->st_value
;
12110 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12111 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12113 sym_value
= hash
->elf
.root
.u
.def
.value
;
12114 if (sym_sec
->output_section
!= NULL
)
12117 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12118 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12120 /* Recognise an old ABI func code entry sym, and
12121 use the func descriptor sym instead if it is
12123 if (hash
->elf
.root
.root
.string
[0] == '.'
12124 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12126 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12127 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12129 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12130 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12131 if (sym_sec
->output_section
!= NULL
)
12140 bfd_set_error (bfd_error_bad_value
);
12141 goto error_ret_free_internal
;
12148 sym_value
+= irela
->r_addend
;
12149 destination
= (sym_value
12150 + sym_sec
->output_offset
12151 + sym_sec
->output_section
->vma
);
12152 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12157 code_sec
= sym_sec
;
12158 code_value
= sym_value
;
12159 opd
= get_opd_info (sym_sec
);
12164 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12166 long adjust
= opd
->adjust
[sym_value
/ 8];
12169 code_value
+= adjust
;
12170 sym_value
+= adjust
;
12172 dest
= opd_entry_value (sym_sec
, sym_value
,
12173 &code_sec
, &code_value
, FALSE
);
12174 if (dest
!= (bfd_vma
) -1)
12176 destination
= dest
;
12179 /* Fixup old ABI sym to point at code
12181 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12182 hash
->elf
.root
.u
.def
.section
= code_sec
;
12183 hash
->elf
.root
.u
.def
.value
= code_value
;
12188 /* Determine what (if any) linker stub is needed. */
12190 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12191 &plt_ent
, destination
,
12194 if (stub_type
!= ppc_stub_plt_call
)
12196 /* Check whether we need a TOC adjusting stub.
12197 Since the linker pastes together pieces from
12198 different object files when creating the
12199 _init and _fini functions, it may be that a
12200 call to what looks like a local sym is in
12201 fact a call needing a TOC adjustment. */
12202 if (code_sec
!= NULL
12203 && code_sec
->output_section
!= NULL
12204 && (htab
->stub_group
[code_sec
->id
].toc_off
12205 != htab
->stub_group
[section
->id
].toc_off
)
12206 && (code_sec
->has_toc_reloc
12207 || code_sec
->makes_toc_func_call
))
12208 stub_type
= ppc_stub_long_branch_r2off
;
12211 if (stub_type
== ppc_stub_none
)
12214 /* __tls_get_addr calls might be eliminated. */
12215 if (stub_type
!= ppc_stub_plt_call
12217 && (hash
== htab
->tls_get_addr
12218 || hash
== htab
->tls_get_addr_fd
)
12219 && section
->has_tls_reloc
12220 && irela
!= internal_relocs
)
12222 /* Get tls info. */
12223 unsigned char *tls_mask
;
12225 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12226 irela
- 1, input_bfd
))
12227 goto error_ret_free_internal
;
12228 if (*tls_mask
!= 0)
12232 if (stub_type
== ppc_stub_plt_call
12233 && irela
+ 1 < irelaend
12234 && irela
[1].r_offset
== irela
->r_offset
+ 4
12235 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12237 if (!tocsave_find (htab
, INSERT
,
12238 &local_syms
, irela
+ 1, input_bfd
))
12239 goto error_ret_free_internal
;
12241 else if (stub_type
== ppc_stub_plt_call
)
12242 stub_type
= ppc_stub_plt_call_r2save
;
12244 /* Support for grouping stub sections. */
12245 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
12247 /* Get the name of this stub. */
12248 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12250 goto error_ret_free_internal
;
12252 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12253 stub_name
, FALSE
, FALSE
);
12254 if (stub_entry
!= NULL
)
12256 /* The proper stub has already been created. */
12258 if (stub_type
== ppc_stub_plt_call_r2save
)
12259 stub_entry
->stub_type
= stub_type
;
12263 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12264 if (stub_entry
== NULL
)
12267 error_ret_free_internal
:
12268 if (elf_section_data (section
)->relocs
== NULL
)
12269 free (internal_relocs
);
12270 error_ret_free_local
:
12271 if (local_syms
!= NULL
12272 && (symtab_hdr
->contents
12273 != (unsigned char *) local_syms
))
12278 stub_entry
->stub_type
= stub_type
;
12279 if (stub_type
!= ppc_stub_plt_call
12280 && stub_type
!= ppc_stub_plt_call_r2save
)
12282 stub_entry
->target_value
= code_value
;
12283 stub_entry
->target_section
= code_sec
;
12287 stub_entry
->target_value
= sym_value
;
12288 stub_entry
->target_section
= sym_sec
;
12290 stub_entry
->h
= hash
;
12291 stub_entry
->plt_ent
= plt_ent
;
12292 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12294 if (stub_entry
->h
!= NULL
)
12295 htab
->stub_globals
+= 1;
12298 /* We're done with the internal relocs, free them. */
12299 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12300 free (internal_relocs
);
12303 if (local_syms
!= NULL
12304 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12306 if (!info
->keep_memory
)
12309 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12313 /* We may have added some stubs. Find out the new size of the
12315 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12317 stub_sec
= stub_sec
->next
)
12318 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12320 stub_sec
->rawsize
= stub_sec
->size
;
12321 stub_sec
->size
= 0;
12322 stub_sec
->reloc_count
= 0;
12323 stub_sec
->flags
&= ~SEC_RELOC
;
12326 htab
->brlt
->size
= 0;
12327 htab
->brlt
->reloc_count
= 0;
12328 htab
->brlt
->flags
&= ~SEC_RELOC
;
12329 if (htab
->relbrlt
!= NULL
)
12330 htab
->relbrlt
->size
= 0;
12332 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12334 if (info
->emitrelocations
12335 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12337 htab
->glink
->reloc_count
= 1;
12338 htab
->glink
->flags
|= SEC_RELOC
;
12341 if (htab
->glink_eh_frame
!= NULL
12342 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12343 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12345 size_t size
= 0, align
;
12347 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12349 stub_sec
= stub_sec
->next
)
12350 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12352 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12355 size
+= sizeof (glink_eh_frame_cie
);
12357 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12359 size
= (size
+ align
) & ~align
;
12360 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12361 htab
->glink_eh_frame
->size
= size
;
12364 if (htab
->params
->plt_stub_align
!= 0)
12365 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12367 stub_sec
= stub_sec
->next
)
12368 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12369 stub_sec
->size
= ((stub_sec
->size
12370 + (1 << htab
->params
->plt_stub_align
) - 1)
12371 & (-1 << htab
->params
->plt_stub_align
));
12373 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12375 stub_sec
= stub_sec
->next
)
12376 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12377 && stub_sec
->rawsize
!= stub_sec
->size
)
12380 /* Exit from this loop when no stubs have been added, and no stubs
12381 have changed size. */
12382 if (stub_sec
== NULL
12383 && (htab
->glink_eh_frame
== NULL
12384 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12387 /* Ask the linker to do its stuff. */
12388 (*htab
->params
->layout_sections_again
) ();
12391 if (htab
->glink_eh_frame
!= NULL
12392 && htab
->glink_eh_frame
->size
!= 0)
12395 bfd_byte
*p
, *last_fde
;
12396 size_t last_fde_len
, size
, align
, pad
;
12397 asection
*stub_sec
;
12399 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12402 htab
->glink_eh_frame
->contents
= p
;
12405 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12406 /* CIE length (rewrite in case little-endian). */
12407 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12408 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12409 p
+= sizeof (glink_eh_frame_cie
);
12411 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12413 stub_sec
= stub_sec
->next
)
12414 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12419 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12422 val
= p
- htab
->glink_eh_frame
->contents
;
12423 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12425 /* Offset to stub section, written later. */
12427 /* stub section size. */
12428 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12430 /* Augmentation. */
12435 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12440 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12443 val
= p
- htab
->glink_eh_frame
->contents
;
12444 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12446 /* Offset to .glink, written later. */
12449 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12451 /* Augmentation. */
12454 *p
++ = DW_CFA_advance_loc
+ 1;
12455 *p
++ = DW_CFA_register
;
12458 *p
++ = DW_CFA_advance_loc
+ 4;
12459 *p
++ = DW_CFA_restore_extended
;
12462 /* Subsume any padding into the last FDE if user .eh_frame
12463 sections are aligned more than glink_eh_frame. Otherwise any
12464 zero padding will be seen as a terminator. */
12465 size
= p
- htab
->glink_eh_frame
->contents
;
12467 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12469 pad
= ((size
+ align
) & ~align
) - size
;
12470 htab
->glink_eh_frame
->size
= size
+ pad
;
12471 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12474 maybe_strip_output (info
, htab
->brlt
);
12475 if (htab
->glink_eh_frame
!= NULL
)
12476 maybe_strip_output (info
, htab
->glink_eh_frame
);
12481 /* Called after we have determined section placement. If sections
12482 move, we'll be called again. Provide a value for TOCstart. */
12485 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12490 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12491 order. The TOC starts where the first of these sections starts. */
12492 s
= bfd_get_section_by_name (obfd
, ".got");
12493 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12494 s
= bfd_get_section_by_name (obfd
, ".toc");
12495 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12496 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12497 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12498 s
= bfd_get_section_by_name (obfd
, ".plt");
12499 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12501 /* This may happen for
12502 o references to TOC base (SYM@toc / TOC[tc0]) without a
12504 o bad linker script
12505 o --gc-sections and empty TOC sections
12507 FIXME: Warn user? */
12509 /* Look for a likely section. We probably won't even be
12511 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12512 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12514 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12517 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12518 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12519 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12522 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12523 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12527 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12528 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12534 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12536 _bfd_set_gp_value (obfd
, TOCstart
);
12538 if (info
!= NULL
&& s
!= NULL
)
12540 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12544 if (htab
->elf
.hgot
!= NULL
)
12546 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
12547 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12552 struct bfd_link_hash_entry
*bh
= NULL
;
12553 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12554 s
, TOC_BASE_OFF
, NULL
, FALSE
,
12561 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12562 write out any global entry stubs. */
12565 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12567 struct bfd_link_info
*info
;
12568 struct ppc_link_hash_table
*htab
;
12569 struct plt_entry
*pent
;
12572 if (h
->root
.type
== bfd_link_hash_indirect
)
12575 if (!h
->pointer_equality_needed
)
12578 if (h
->def_regular
)
12582 htab
= ppc_hash_table (info
);
12587 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12588 if (pent
->plt
.offset
!= (bfd_vma
) -1
12589 && pent
->addend
== 0)
12595 p
= s
->contents
+ h
->root
.u
.def
.value
;
12596 plt
= htab
->elf
.splt
;
12597 if (!htab
->elf
.dynamic_sections_created
12598 || h
->dynindx
== -1)
12599 plt
= htab
->elf
.iplt
;
12600 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12601 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12603 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12605 info
->callbacks
->einfo
12606 (_("%P: linkage table error against `%T'\n"),
12607 h
->root
.root
.string
);
12608 bfd_set_error (bfd_error_bad_value
);
12609 htab
->stub_error
= TRUE
;
12612 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12613 if (htab
->params
->emit_stub_syms
)
12615 size_t len
= strlen (h
->root
.root
.string
);
12616 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12621 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12622 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12625 if (h
->root
.type
== bfd_link_hash_new
)
12627 h
->root
.type
= bfd_link_hash_defined
;
12628 h
->root
.u
.def
.section
= s
;
12629 h
->root
.u
.def
.value
= p
- s
->contents
;
12630 h
->ref_regular
= 1;
12631 h
->def_regular
= 1;
12632 h
->ref_regular_nonweak
= 1;
12633 h
->forced_local
= 1;
12638 if (PPC_HA (off
) != 0)
12640 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12643 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12645 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12647 bfd_put_32 (s
->owner
, BCTR
, p
);
12653 /* Build all the stubs associated with the current output file.
12654 The stubs are kept in a hash table attached to the main linker
12655 hash table. This function is called via gldelf64ppc_finish. */
12658 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12661 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12662 asection
*stub_sec
;
12664 int stub_sec_count
= 0;
12669 /* Allocate memory to hold the linker stubs. */
12670 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12672 stub_sec
= stub_sec
->next
)
12673 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12674 && stub_sec
->size
!= 0)
12676 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12677 if (stub_sec
->contents
== NULL
)
12679 /* We want to check that built size is the same as calculated
12680 size. rawsize is a convenient location to use. */
12681 stub_sec
->rawsize
= stub_sec
->size
;
12682 stub_sec
->size
= 0;
12685 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12690 /* Build the .glink plt call stub. */
12691 if (htab
->params
->emit_stub_syms
)
12693 struct elf_link_hash_entry
*h
;
12694 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12695 TRUE
, FALSE
, FALSE
);
12698 if (h
->root
.type
== bfd_link_hash_new
)
12700 h
->root
.type
= bfd_link_hash_defined
;
12701 h
->root
.u
.def
.section
= htab
->glink
;
12702 h
->root
.u
.def
.value
= 8;
12703 h
->ref_regular
= 1;
12704 h
->def_regular
= 1;
12705 h
->ref_regular_nonweak
= 1;
12706 h
->forced_local
= 1;
12710 plt0
= (htab
->elf
.splt
->output_section
->vma
12711 + htab
->elf
.splt
->output_offset
12713 if (info
->emitrelocations
)
12715 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12718 r
->r_offset
= (htab
->glink
->output_offset
12719 + htab
->glink
->output_section
->vma
);
12720 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12721 r
->r_addend
= plt0
;
12723 p
= htab
->glink
->contents
;
12724 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12725 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12729 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12731 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12733 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12735 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12737 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12739 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12741 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12743 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12745 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12747 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12752 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12754 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12756 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12758 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12760 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12762 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
12764 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12766 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
12768 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12770 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
12772 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12774 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
12777 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12779 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12781 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12785 /* Build the .glink lazy link call stubs. */
12787 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
12793 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12798 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12800 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
12805 bfd_put_32 (htab
->glink
->owner
,
12806 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12811 /* Build .glink global entry stubs. */
12812 if (htab
->glink
->size
> htab
->glink
->rawsize
)
12813 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
12816 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
12818 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12820 if (htab
->brlt
->contents
== NULL
)
12823 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12825 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12826 htab
->relbrlt
->size
);
12827 if (htab
->relbrlt
->contents
== NULL
)
12831 /* Build the stubs as directed by the stub hash table. */
12832 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12834 if (htab
->relbrlt
!= NULL
)
12835 htab
->relbrlt
->reloc_count
= 0;
12837 if (htab
->params
->plt_stub_align
!= 0)
12838 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12840 stub_sec
= stub_sec
->next
)
12841 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12842 stub_sec
->size
= ((stub_sec
->size
12843 + (1 << htab
->params
->plt_stub_align
) - 1)
12844 & (-1 << htab
->params
->plt_stub_align
));
12846 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12848 stub_sec
= stub_sec
->next
)
12849 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12851 stub_sec_count
+= 1;
12852 if (stub_sec
->rawsize
!= stub_sec
->size
)
12856 /* Note that the glink_eh_frame check here is not only testing that
12857 the generated size matched the calculated size but also that
12858 bfd_elf_discard_info didn't make any changes to the section. */
12859 if (stub_sec
!= NULL
12860 || (htab
->glink_eh_frame
!= NULL
12861 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12863 htab
->stub_error
= TRUE
;
12864 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12867 if (htab
->stub_error
)
12872 *stats
= bfd_malloc (500);
12873 if (*stats
== NULL
)
12876 sprintf (*stats
, _("linker stubs in %u group%s\n"
12878 " toc adjust %lu\n"
12879 " long branch %lu\n"
12880 " long toc adj %lu\n"
12882 " plt call toc %lu\n"
12883 " global entry %lu"),
12885 stub_sec_count
== 1 ? "" : "s",
12886 htab
->stub_count
[ppc_stub_long_branch
- 1],
12887 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12888 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12889 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12890 htab
->stub_count
[ppc_stub_plt_call
- 1],
12891 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
12892 htab
->stub_count
[ppc_stub_global_entry
- 1]);
12897 /* This function undoes the changes made by add_symbol_adjust. */
12900 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12902 struct ppc_link_hash_entry
*eh
;
12904 if (h
->root
.type
== bfd_link_hash_indirect
)
12907 eh
= (struct ppc_link_hash_entry
*) h
;
12908 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12911 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12916 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12918 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12921 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12924 /* What to do when ld finds relocations against symbols defined in
12925 discarded sections. */
12927 static unsigned int
12928 ppc64_elf_action_discarded (asection
*sec
)
12930 if (strcmp (".opd", sec
->name
) == 0)
12933 if (strcmp (".toc", sec
->name
) == 0)
12936 if (strcmp (".toc1", sec
->name
) == 0)
12939 return _bfd_elf_default_action_discarded (sec
);
12942 /* The RELOCATE_SECTION function is called by the ELF backend linker
12943 to handle the relocations for a section.
12945 The relocs are always passed as Rela structures; if the section
12946 actually uses Rel structures, the r_addend field will always be
12949 This function is responsible for adjust the section contents as
12950 necessary, and (if using Rela relocs and generating a
12951 relocatable output file) adjusting the reloc addend as
12954 This function does not have to worry about setting the reloc
12955 address or the reloc symbol index.
12957 LOCAL_SYMS is a pointer to the swapped in local symbols.
12959 LOCAL_SECTIONS is an array giving the section in the input file
12960 corresponding to the st_shndx field of each local symbol.
12962 The global hash table entry for the global symbols can be found
12963 via elf_sym_hashes (input_bfd).
12965 When generating relocatable output, this function must handle
12966 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12967 going to be the section symbol corresponding to the output
12968 section, which means that the addend must be adjusted
12972 ppc64_elf_relocate_section (bfd
*output_bfd
,
12973 struct bfd_link_info
*info
,
12975 asection
*input_section
,
12976 bfd_byte
*contents
,
12977 Elf_Internal_Rela
*relocs
,
12978 Elf_Internal_Sym
*local_syms
,
12979 asection
**local_sections
)
12981 struct ppc_link_hash_table
*htab
;
12982 Elf_Internal_Shdr
*symtab_hdr
;
12983 struct elf_link_hash_entry
**sym_hashes
;
12984 Elf_Internal_Rela
*rel
;
12985 Elf_Internal_Rela
*relend
;
12986 Elf_Internal_Rela outrel
;
12988 struct got_entry
**local_got_ents
;
12990 bfd_boolean ret
= TRUE
;
12991 bfd_boolean is_opd
;
12992 /* Assume 'at' branch hints. */
12993 bfd_boolean is_isa_v2
= TRUE
;
12994 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
12996 /* Initialize howto table if needed. */
12997 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13000 htab
= ppc_hash_table (info
);
13004 /* Don't relocate stub sections. */
13005 if (input_section
->owner
== htab
->params
->stub_bfd
)
13008 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13010 local_got_ents
= elf_local_got_ents (input_bfd
);
13011 TOCstart
= elf_gp (output_bfd
);
13012 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13013 sym_hashes
= elf_sym_hashes (input_bfd
);
13014 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13017 relend
= relocs
+ input_section
->reloc_count
;
13018 for (; rel
< relend
; rel
++)
13020 enum elf_ppc64_reloc_type r_type
;
13022 bfd_reloc_status_type r
;
13023 Elf_Internal_Sym
*sym
;
13025 struct elf_link_hash_entry
*h_elf
;
13026 struct ppc_link_hash_entry
*h
;
13027 struct ppc_link_hash_entry
*fdh
;
13028 const char *sym_name
;
13029 unsigned long r_symndx
, toc_symndx
;
13030 bfd_vma toc_addend
;
13031 unsigned char tls_mask
, tls_gd
, tls_type
;
13032 unsigned char sym_type
;
13033 bfd_vma relocation
;
13034 bfd_boolean unresolved_reloc
;
13035 bfd_boolean warned
;
13036 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13039 struct ppc_stub_hash_entry
*stub_entry
;
13040 bfd_vma max_br_offset
;
13042 const Elf_Internal_Rela orig_rel
= *rel
;
13043 reloc_howto_type
*howto
;
13044 struct reloc_howto_struct alt_howto
;
13046 r_type
= ELF64_R_TYPE (rel
->r_info
);
13047 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13049 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13050 symbol of the previous ADDR64 reloc. The symbol gives us the
13051 proper TOC base to use. */
13052 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13054 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
13056 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
13062 unresolved_reloc
= FALSE
;
13065 if (r_symndx
< symtab_hdr
->sh_info
)
13067 /* It's a local symbol. */
13068 struct _opd_sec_data
*opd
;
13070 sym
= local_syms
+ r_symndx
;
13071 sec
= local_sections
[r_symndx
];
13072 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13073 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13074 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13075 opd
= get_opd_info (sec
);
13076 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13078 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
13083 /* If this is a relocation against the opd section sym
13084 and we have edited .opd, adjust the reloc addend so
13085 that ld -r and ld --emit-relocs output is correct.
13086 If it is a reloc against some other .opd symbol,
13087 then the symbol value will be adjusted later. */
13088 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13089 rel
->r_addend
+= adjust
;
13091 relocation
+= adjust
;
13097 bfd_boolean ignored
;
13099 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13100 r_symndx
, symtab_hdr
, sym_hashes
,
13101 h_elf
, sec
, relocation
,
13102 unresolved_reloc
, warned
, ignored
);
13103 sym_name
= h_elf
->root
.root
.string
;
13104 sym_type
= h_elf
->type
;
13106 && sec
->owner
== output_bfd
13107 && strcmp (sec
->name
, ".opd") == 0)
13109 /* This is a symbol defined in a linker script. All
13110 such are defined in output sections, even those
13111 defined by simple assignment from a symbol defined in
13112 an input section. Transfer the symbol to an
13113 appropriate input .opd section, so that a branch to
13114 this symbol will be mapped to the location specified
13115 by the opd entry. */
13116 struct bfd_link_order
*lo
;
13117 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13118 if (lo
->type
== bfd_indirect_link_order
)
13120 asection
*isec
= lo
->u
.indirect
.section
;
13121 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13122 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13125 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13126 h_elf
->root
.u
.def
.section
= isec
;
13133 h
= (struct ppc_link_hash_entry
*) h_elf
;
13135 if (sec
!= NULL
&& discarded_section (sec
))
13136 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
13138 ppc64_elf_howto_table
[r_type
], 0,
13141 if (info
->relocatable
)
13144 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13146 relocation
= (TOCstart
13147 + htab
->stub_group
[input_section
->id
].toc_off
);
13148 sec
= bfd_abs_section_ptr
;
13149 unresolved_reloc
= FALSE
;
13152 /* TLS optimizations. Replace instruction sequences and relocs
13153 based on information we collected in tls_optimize. We edit
13154 RELOCS so that --emit-relocs will output something sensible
13155 for the final instruction stream. */
13160 tls_mask
= h
->tls_mask
;
13161 else if (local_got_ents
!= NULL
)
13163 struct plt_entry
**local_plt
= (struct plt_entry
**)
13164 (local_got_ents
+ symtab_hdr
->sh_info
);
13165 unsigned char *lgot_masks
= (unsigned char *)
13166 (local_plt
+ symtab_hdr
->sh_info
);
13167 tls_mask
= lgot_masks
[r_symndx
];
13170 && (r_type
== R_PPC64_TLS
13171 || r_type
== R_PPC64_TLSGD
13172 || r_type
== R_PPC64_TLSLD
))
13174 /* Check for toc tls entries. */
13175 unsigned char *toc_tls
;
13177 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13178 &local_syms
, rel
, input_bfd
))
13182 tls_mask
= *toc_tls
;
13185 /* Check that tls relocs are used with tls syms, and non-tls
13186 relocs are used with non-tls syms. */
13187 if (r_symndx
!= STN_UNDEF
13188 && r_type
!= R_PPC64_NONE
13190 || h
->elf
.root
.type
== bfd_link_hash_defined
13191 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13192 && (IS_PPC64_TLS_RELOC (r_type
)
13193 != (sym_type
== STT_TLS
13194 || (sym_type
== STT_SECTION
13195 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13198 && (r_type
== R_PPC64_TLS
13199 || r_type
== R_PPC64_TLSGD
13200 || r_type
== R_PPC64_TLSLD
))
13201 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13204 info
->callbacks
->einfo
13205 (!IS_PPC64_TLS_RELOC (r_type
)
13206 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13207 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13208 input_bfd
, input_section
, rel
->r_offset
,
13209 ppc64_elf_howto_table
[r_type
]->name
,
13213 /* Ensure reloc mapping code below stays sane. */
13214 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13215 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13216 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13217 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13218 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13219 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13220 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13221 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13222 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13223 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13231 case R_PPC64_LO_DS_OPT
:
13232 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13233 if ((insn
& (0x3f << 26)) != 58u << 26)
13235 insn
+= (14u << 26) - (58u << 26);
13236 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13237 r_type
= R_PPC64_TOC16_LO
;
13238 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13241 case R_PPC64_TOC16
:
13242 case R_PPC64_TOC16_LO
:
13243 case R_PPC64_TOC16_DS
:
13244 case R_PPC64_TOC16_LO_DS
:
13246 /* Check for toc tls entries. */
13247 unsigned char *toc_tls
;
13250 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13251 &local_syms
, rel
, input_bfd
);
13257 tls_mask
= *toc_tls
;
13258 if (r_type
== R_PPC64_TOC16_DS
13259 || r_type
== R_PPC64_TOC16_LO_DS
)
13262 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13267 /* If we found a GD reloc pair, then we might be
13268 doing a GD->IE transition. */
13271 tls_gd
= TLS_TPRELGD
;
13272 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13275 else if (retval
== 3)
13277 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13285 case R_PPC64_GOT_TPREL16_HI
:
13286 case R_PPC64_GOT_TPREL16_HA
:
13288 && (tls_mask
& TLS_TPREL
) == 0)
13290 rel
->r_offset
-= d_offset
;
13291 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13292 r_type
= R_PPC64_NONE
;
13293 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13297 case R_PPC64_GOT_TPREL16_DS
:
13298 case R_PPC64_GOT_TPREL16_LO_DS
:
13300 && (tls_mask
& TLS_TPREL
) == 0)
13303 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13305 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13306 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13307 r_type
= R_PPC64_TPREL16_HA
;
13308 if (toc_symndx
!= 0)
13310 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13311 rel
->r_addend
= toc_addend
;
13312 /* We changed the symbol. Start over in order to
13313 get h, sym, sec etc. right. */
13318 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13324 && (tls_mask
& TLS_TPREL
) == 0)
13326 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13327 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13330 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13331 /* Was PPC64_TLS which sits on insn boundary, now
13332 PPC64_TPREL16_LO which is at low-order half-word. */
13333 rel
->r_offset
+= d_offset
;
13334 r_type
= R_PPC64_TPREL16_LO
;
13335 if (toc_symndx
!= 0)
13337 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13338 rel
->r_addend
= toc_addend
;
13339 /* We changed the symbol. Start over in order to
13340 get h, sym, sec etc. right. */
13345 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13349 case R_PPC64_GOT_TLSGD16_HI
:
13350 case R_PPC64_GOT_TLSGD16_HA
:
13351 tls_gd
= TLS_TPRELGD
;
13352 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13356 case R_PPC64_GOT_TLSLD16_HI
:
13357 case R_PPC64_GOT_TLSLD16_HA
:
13358 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13361 if ((tls_mask
& tls_gd
) != 0)
13362 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13363 + R_PPC64_GOT_TPREL16_DS
);
13366 rel
->r_offset
-= d_offset
;
13367 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13368 r_type
= R_PPC64_NONE
;
13370 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13374 case R_PPC64_GOT_TLSGD16
:
13375 case R_PPC64_GOT_TLSGD16_LO
:
13376 tls_gd
= TLS_TPRELGD
;
13377 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13381 case R_PPC64_GOT_TLSLD16
:
13382 case R_PPC64_GOT_TLSLD16_LO
:
13383 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13385 unsigned int insn1
, insn2
, insn3
;
13389 offset
= (bfd_vma
) -1;
13390 /* If not using the newer R_PPC64_TLSGD/LD to mark
13391 __tls_get_addr calls, we must trust that the call
13392 stays with its arg setup insns, ie. that the next
13393 reloc is the __tls_get_addr call associated with
13394 the current reloc. Edit both insns. */
13395 if (input_section
->has_tls_get_addr_call
13396 && rel
+ 1 < relend
13397 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13398 htab
->tls_get_addr
,
13399 htab
->tls_get_addr_fd
))
13400 offset
= rel
[1].r_offset
;
13401 if ((tls_mask
& tls_gd
) != 0)
13404 insn1
= bfd_get_32 (output_bfd
,
13405 contents
+ rel
->r_offset
- d_offset
);
13406 insn1
&= (1 << 26) - (1 << 2);
13407 insn1
|= 58 << 26; /* ld */
13408 insn2
= 0x7c636a14; /* add 3,3,13 */
13409 if (offset
!= (bfd_vma
) -1)
13410 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13411 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13412 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13413 + R_PPC64_GOT_TPREL16_DS
);
13415 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13416 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13421 insn1
= 0x3c6d0000; /* addis 3,13,0 */
13422 insn2
= 0x38630000; /* addi 3,3,0 */
13425 /* Was an LD reloc. */
13427 sec
= local_sections
[toc_symndx
];
13429 r_symndx
< symtab_hdr
->sh_info
;
13431 if (local_sections
[r_symndx
] == sec
)
13433 if (r_symndx
>= symtab_hdr
->sh_info
)
13434 r_symndx
= STN_UNDEF
;
13435 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13436 if (r_symndx
!= STN_UNDEF
)
13437 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13438 + sec
->output_offset
13439 + sec
->output_section
->vma
);
13441 else if (toc_symndx
!= 0)
13443 r_symndx
= toc_symndx
;
13444 rel
->r_addend
= toc_addend
;
13446 r_type
= R_PPC64_TPREL16_HA
;
13447 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13448 if (offset
!= (bfd_vma
) -1)
13450 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13451 R_PPC64_TPREL16_LO
);
13452 rel
[1].r_offset
= offset
+ d_offset
;
13453 rel
[1].r_addend
= rel
->r_addend
;
13456 bfd_put_32 (output_bfd
, insn1
,
13457 contents
+ rel
->r_offset
- d_offset
);
13458 if (offset
!= (bfd_vma
) -1)
13460 insn3
= bfd_get_32 (output_bfd
,
13461 contents
+ offset
+ 4);
13463 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13465 rel
[1].r_offset
+= 4;
13466 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13469 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13471 if ((tls_mask
& tls_gd
) == 0
13472 && (tls_gd
== 0 || toc_symndx
!= 0))
13474 /* We changed the symbol. Start over in order
13475 to get h, sym, sec etc. right. */
13482 case R_PPC64_TLSGD
:
13483 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13485 unsigned int insn2
, insn3
;
13486 bfd_vma offset
= rel
->r_offset
;
13488 if ((tls_mask
& TLS_TPRELGD
) != 0)
13491 r_type
= R_PPC64_NONE
;
13492 insn2
= 0x7c636a14; /* add 3,3,13 */
13497 if (toc_symndx
!= 0)
13499 r_symndx
= toc_symndx
;
13500 rel
->r_addend
= toc_addend
;
13502 r_type
= R_PPC64_TPREL16_LO
;
13503 rel
->r_offset
= offset
+ d_offset
;
13504 insn2
= 0x38630000; /* addi 3,3,0 */
13506 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13507 /* Zap the reloc on the _tls_get_addr call too. */
13508 BFD_ASSERT (offset
== rel
[1].r_offset
);
13509 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13510 insn3
= bfd_get_32 (output_bfd
,
13511 contents
+ offset
+ 4);
13513 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13515 rel
->r_offset
+= 4;
13516 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13519 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13520 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13528 case R_PPC64_TLSLD
:
13529 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13531 unsigned int insn2
, insn3
;
13532 bfd_vma offset
= rel
->r_offset
;
13535 sec
= local_sections
[toc_symndx
];
13537 r_symndx
< symtab_hdr
->sh_info
;
13539 if (local_sections
[r_symndx
] == sec
)
13541 if (r_symndx
>= symtab_hdr
->sh_info
)
13542 r_symndx
= STN_UNDEF
;
13543 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13544 if (r_symndx
!= STN_UNDEF
)
13545 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13546 + sec
->output_offset
13547 + sec
->output_section
->vma
);
13549 r_type
= R_PPC64_TPREL16_LO
;
13550 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13551 rel
->r_offset
= offset
+ d_offset
;
13552 /* Zap the reloc on the _tls_get_addr call too. */
13553 BFD_ASSERT (offset
== rel
[1].r_offset
);
13554 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13555 insn2
= 0x38630000; /* addi 3,3,0 */
13556 insn3
= bfd_get_32 (output_bfd
,
13557 contents
+ offset
+ 4);
13559 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13561 rel
->r_offset
+= 4;
13562 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13565 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13571 case R_PPC64_DTPMOD64
:
13572 if (rel
+ 1 < relend
13573 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13574 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13576 if ((tls_mask
& TLS_GD
) == 0)
13578 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13579 if ((tls_mask
& TLS_TPRELGD
) != 0)
13580 r_type
= R_PPC64_TPREL64
;
13583 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13584 r_type
= R_PPC64_NONE
;
13586 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13591 if ((tls_mask
& TLS_LD
) == 0)
13593 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13594 r_type
= R_PPC64_NONE
;
13595 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13600 case R_PPC64_TPREL64
:
13601 if ((tls_mask
& TLS_TPREL
) == 0)
13603 r_type
= R_PPC64_NONE
;
13604 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13608 case R_PPC64_REL16_HA
:
13609 /* If we are generating a non-PIC executable, edit
13610 . 0: addis 2,12,.TOC.-0b@ha
13611 . addi 2,2,.TOC.-0b@l
13612 used by ELFv2 global entry points to set up r2, to
13615 if .TOC. is in range. */
13617 && !info
->traditional_format
13618 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13619 && rel
+ 1 < relend
13620 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13621 && rel
[1].r_offset
== rel
->r_offset
+ 4
13622 && rel
[1].r_addend
== rel
->r_addend
+ 4
13623 && relocation
+ 0x80008000 <= 0xffffffff)
13625 unsigned int insn1
, insn2
;
13626 bfd_vma offset
= rel
->r_offset
- d_offset
;
13627 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13628 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13629 if ((insn1
& 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13630 && (insn2
& 0xffff0000) == 0x38420000 /* addi 2,2 */)
13632 r_type
= R_PPC64_ADDR16_HA
;
13633 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13634 rel
->r_addend
-= d_offset
;
13635 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13636 rel
[1].r_addend
-= d_offset
+ 4;
13637 bfd_put_32 (output_bfd
, 0x3c400000, contents
+ offset
);
13643 /* Handle other relocations that tweak non-addend part of insn. */
13645 max_br_offset
= 1 << 25;
13646 addend
= rel
->r_addend
;
13647 reloc_dest
= DEST_NORMAL
;
13653 case R_PPC64_TOCSAVE
:
13654 if (relocation
+ addend
== (rel
->r_offset
13655 + input_section
->output_offset
13656 + input_section
->output_section
->vma
)
13657 && tocsave_find (htab
, NO_INSERT
,
13658 &local_syms
, rel
, input_bfd
))
13660 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13662 || insn
== CROR_151515
|| insn
== CROR_313131
)
13663 bfd_put_32 (input_bfd
,
13664 STD_R2_0R1
+ STK_TOC (htab
),
13665 contents
+ rel
->r_offset
);
13669 /* Branch taken prediction relocations. */
13670 case R_PPC64_ADDR14_BRTAKEN
:
13671 case R_PPC64_REL14_BRTAKEN
:
13672 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13675 /* Branch not taken prediction relocations. */
13676 case R_PPC64_ADDR14_BRNTAKEN
:
13677 case R_PPC64_REL14_BRNTAKEN
:
13678 insn
|= bfd_get_32 (output_bfd
,
13679 contents
+ rel
->r_offset
) & ~(0x01 << 21);
13682 case R_PPC64_REL14
:
13683 max_br_offset
= 1 << 15;
13686 case R_PPC64_REL24
:
13687 /* Calls to functions with a different TOC, such as calls to
13688 shared objects, need to alter the TOC pointer. This is
13689 done using a linkage stub. A REL24 branching to these
13690 linkage stubs needs to be followed by a nop, as the nop
13691 will be replaced with an instruction to restore the TOC
13696 && h
->oh
->is_func_descriptor
)
13697 fdh
= ppc_follow_link (h
->oh
);
13698 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13700 if (stub_entry
!= NULL
13701 && (stub_entry
->stub_type
== ppc_stub_plt_call
13702 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13703 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13704 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13706 bfd_boolean can_plt_call
= FALSE
;
13708 /* All of these stubs will modify r2, so there must be a
13709 branch and link followed by a nop. The nop is
13710 replaced by an insn to restore r2. */
13711 if (rel
->r_offset
+ 8 <= input_section
->size
)
13715 br
= bfd_get_32 (input_bfd
,
13716 contents
+ rel
->r_offset
);
13721 nop
= bfd_get_32 (input_bfd
,
13722 contents
+ rel
->r_offset
+ 4);
13724 || nop
== CROR_151515
|| nop
== CROR_313131
)
13727 && (h
== htab
->tls_get_addr_fd
13728 || h
== htab
->tls_get_addr
)
13729 && !htab
->params
->no_tls_get_addr_opt
)
13731 /* Special stub used, leave nop alone. */
13734 bfd_put_32 (input_bfd
,
13735 LD_R2_0R1
+ STK_TOC (htab
),
13736 contents
+ rel
->r_offset
+ 4);
13737 can_plt_call
= TRUE
;
13742 if (!can_plt_call
&& h
!= NULL
)
13744 const char *name
= h
->elf
.root
.root
.string
;
13749 if (strncmp (name
, "__libc_start_main", 17) == 0
13750 && (name
[17] == 0 || name
[17] == '@'))
13752 /* Allow crt1 branch to go via a toc adjusting
13753 stub. Other calls that never return could do
13754 the same, if we could detect such. */
13755 can_plt_call
= TRUE
;
13761 /* g++ as of 20130507 emits self-calls without a
13762 following nop. This is arguably wrong since we
13763 have conflicting information. On the one hand a
13764 global symbol and on the other a local call
13765 sequence, but don't error for this special case.
13766 It isn't possible to cheaply verify we have
13767 exactly such a call. Allow all calls to the same
13769 asection
*code_sec
= sec
;
13771 if (get_opd_info (sec
) != NULL
)
13773 bfd_vma off
= (relocation
+ addend
13774 - sec
->output_section
->vma
13775 - sec
->output_offset
);
13777 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13779 if (code_sec
== input_section
)
13780 can_plt_call
= TRUE
;
13785 if (stub_entry
->stub_type
== ppc_stub_plt_call
13786 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13787 info
->callbacks
->einfo
13788 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13789 "recompile with -fPIC\n"),
13790 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13792 info
->callbacks
->einfo
13793 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13794 "(-mcmodel=small toc adjust stub)\n"),
13795 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13797 bfd_set_error (bfd_error_bad_value
);
13802 && (stub_entry
->stub_type
== ppc_stub_plt_call
13803 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13804 unresolved_reloc
= FALSE
;
13807 if ((stub_entry
== NULL
13808 || stub_entry
->stub_type
== ppc_stub_long_branch
13809 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13810 && get_opd_info (sec
) != NULL
)
13812 /* The branch destination is the value of the opd entry. */
13813 bfd_vma off
= (relocation
+ addend
13814 - sec
->output_section
->vma
13815 - sec
->output_offset
);
13816 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13817 if (dest
!= (bfd_vma
) -1)
13821 reloc_dest
= DEST_OPD
;
13825 /* If the branch is out of reach we ought to have a long
13827 from
= (rel
->r_offset
13828 + input_section
->output_offset
13829 + input_section
->output_section
->vma
);
13831 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
13835 if (stub_entry
!= NULL
13836 && (stub_entry
->stub_type
== ppc_stub_long_branch
13837 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13838 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13839 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13840 || (relocation
+ addend
- from
+ max_br_offset
13841 < 2 * max_br_offset
)))
13842 /* Don't use the stub if this branch is in range. */
13845 if (stub_entry
!= NULL
)
13847 /* Munge up the value and addend so that we call the stub
13848 rather than the procedure directly. */
13849 relocation
= (stub_entry
->stub_offset
13850 + stub_entry
->stub_sec
->output_offset
13851 + stub_entry
->stub_sec
->output_section
->vma
);
13853 reloc_dest
= DEST_STUB
;
13855 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13856 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13857 && (ALWAYS_EMIT_R2SAVE
13858 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13859 && rel
+ 1 < relend
13860 && rel
[1].r_offset
== rel
->r_offset
+ 4
13861 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13869 /* Set 'a' bit. This is 0b00010 in BO field for branch
13870 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13871 for branch on CTR insns (BO == 1a00t or 1a01t). */
13872 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13873 insn
|= 0x02 << 21;
13874 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13875 insn
|= 0x08 << 21;
13881 /* Invert 'y' bit if not the default. */
13882 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13883 insn
^= 0x01 << 21;
13886 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13889 /* NOP out calls to undefined weak functions.
13890 We can thus call a weak function without first
13891 checking whether the function is defined. */
13893 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13894 && h
->elf
.dynindx
== -1
13895 && r_type
== R_PPC64_REL24
13899 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13905 /* Set `addend'. */
13910 info
->callbacks
->einfo
13911 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13912 input_bfd
, (int) r_type
, sym_name
);
13914 bfd_set_error (bfd_error_bad_value
);
13920 case R_PPC64_TLSGD
:
13921 case R_PPC64_TLSLD
:
13922 case R_PPC64_TOCSAVE
:
13923 case R_PPC64_GNU_VTINHERIT
:
13924 case R_PPC64_GNU_VTENTRY
:
13927 /* GOT16 relocations. Like an ADDR16 using the symbol's
13928 address in the GOT as relocation value instead of the
13929 symbol's value itself. Also, create a GOT entry for the
13930 symbol and put the symbol value there. */
13931 case R_PPC64_GOT_TLSGD16
:
13932 case R_PPC64_GOT_TLSGD16_LO
:
13933 case R_PPC64_GOT_TLSGD16_HI
:
13934 case R_PPC64_GOT_TLSGD16_HA
:
13935 tls_type
= TLS_TLS
| TLS_GD
;
13938 case R_PPC64_GOT_TLSLD16
:
13939 case R_PPC64_GOT_TLSLD16_LO
:
13940 case R_PPC64_GOT_TLSLD16_HI
:
13941 case R_PPC64_GOT_TLSLD16_HA
:
13942 tls_type
= TLS_TLS
| TLS_LD
;
13945 case R_PPC64_GOT_TPREL16_DS
:
13946 case R_PPC64_GOT_TPREL16_LO_DS
:
13947 case R_PPC64_GOT_TPREL16_HI
:
13948 case R_PPC64_GOT_TPREL16_HA
:
13949 tls_type
= TLS_TLS
| TLS_TPREL
;
13952 case R_PPC64_GOT_DTPREL16_DS
:
13953 case R_PPC64_GOT_DTPREL16_LO_DS
:
13954 case R_PPC64_GOT_DTPREL16_HI
:
13955 case R_PPC64_GOT_DTPREL16_HA
:
13956 tls_type
= TLS_TLS
| TLS_DTPREL
;
13959 case R_PPC64_GOT16
:
13960 case R_PPC64_GOT16_LO
:
13961 case R_PPC64_GOT16_HI
:
13962 case R_PPC64_GOT16_HA
:
13963 case R_PPC64_GOT16_DS
:
13964 case R_PPC64_GOT16_LO_DS
:
13967 /* Relocation is to the entry for this symbol in the global
13972 unsigned long indx
= 0;
13973 struct got_entry
*ent
;
13975 if (tls_type
== (TLS_TLS
| TLS_LD
)
13977 || !h
->elf
.def_dynamic
))
13978 ent
= ppc64_tlsld_got (input_bfd
);
13984 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
13985 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
13988 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
13989 /* This is actually a static link, or it is a
13990 -Bsymbolic link and the symbol is defined
13991 locally, or the symbol was forced to be local
13992 because of a version file. */
13996 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13997 indx
= h
->elf
.dynindx
;
13998 unresolved_reloc
= FALSE
;
14000 ent
= h
->elf
.got
.glist
;
14004 if (local_got_ents
== NULL
)
14006 ent
= local_got_ents
[r_symndx
];
14009 for (; ent
!= NULL
; ent
= ent
->next
)
14010 if (ent
->addend
== orig_rel
.r_addend
14011 && ent
->owner
== input_bfd
14012 && ent
->tls_type
== tls_type
)
14018 if (ent
->is_indirect
)
14019 ent
= ent
->got
.ent
;
14020 offp
= &ent
->got
.offset
;
14021 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14025 /* The offset must always be a multiple of 8. We use the
14026 least significant bit to record whether we have already
14027 processed this entry. */
14029 if ((off
& 1) != 0)
14033 /* Generate relocs for the dynamic linker, except in
14034 the case of TLSLD where we'll use one entry per
14042 ? h
->elf
.type
== STT_GNU_IFUNC
14043 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14045 relgot
= htab
->elf
.irelplt
;
14046 else if ((info
->shared
|| indx
!= 0)
14048 || (tls_type
== (TLS_TLS
| TLS_LD
)
14049 && !h
->elf
.def_dynamic
)
14050 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14051 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14052 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14053 if (relgot
!= NULL
)
14055 outrel
.r_offset
= (got
->output_section
->vma
14056 + got
->output_offset
14058 outrel
.r_addend
= addend
;
14059 if (tls_type
& (TLS_LD
| TLS_GD
))
14061 outrel
.r_addend
= 0;
14062 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14063 if (tls_type
== (TLS_TLS
| TLS_GD
))
14065 loc
= relgot
->contents
;
14066 loc
+= (relgot
->reloc_count
++
14067 * sizeof (Elf64_External_Rela
));
14068 bfd_elf64_swap_reloca_out (output_bfd
,
14070 outrel
.r_offset
+= 8;
14071 outrel
.r_addend
= addend
;
14073 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14076 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14077 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14078 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14079 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14080 else if (indx
!= 0)
14081 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14085 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14087 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14089 /* Write the .got section contents for the sake
14091 loc
= got
->contents
+ off
;
14092 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14096 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14098 outrel
.r_addend
+= relocation
;
14099 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14100 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14102 loc
= relgot
->contents
;
14103 loc
+= (relgot
->reloc_count
++
14104 * sizeof (Elf64_External_Rela
));
14105 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14108 /* Init the .got section contents here if we're not
14109 emitting a reloc. */
14112 relocation
+= addend
;
14113 if (tls_type
== (TLS_TLS
| TLS_LD
))
14115 else if (tls_type
!= 0)
14117 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14118 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14119 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14121 if (tls_type
== (TLS_TLS
| TLS_GD
))
14123 bfd_put_64 (output_bfd
, relocation
,
14124 got
->contents
+ off
+ 8);
14129 bfd_put_64 (output_bfd
, relocation
,
14130 got
->contents
+ off
);
14134 if (off
>= (bfd_vma
) -2)
14137 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14138 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
14142 case R_PPC64_PLT16_HA
:
14143 case R_PPC64_PLT16_HI
:
14144 case R_PPC64_PLT16_LO
:
14145 case R_PPC64_PLT32
:
14146 case R_PPC64_PLT64
:
14147 /* Relocation is to the entry for this symbol in the
14148 procedure linkage table. */
14150 /* Resolve a PLT reloc against a local symbol directly,
14151 without using the procedure linkage table. */
14155 /* It's possible that we didn't make a PLT entry for this
14156 symbol. This happens when statically linking PIC code,
14157 or when using -Bsymbolic. Go find a match if there is a
14159 if (htab
->elf
.splt
!= NULL
)
14161 struct plt_entry
*ent
;
14162 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14163 if (ent
->plt
.offset
!= (bfd_vma
) -1
14164 && ent
->addend
== orig_rel
.r_addend
)
14166 relocation
= (htab
->elf
.splt
->output_section
->vma
14167 + htab
->elf
.splt
->output_offset
14168 + ent
->plt
.offset
);
14169 unresolved_reloc
= FALSE
;
14176 /* Relocation value is TOC base. */
14177 relocation
= TOCstart
;
14178 if (r_symndx
== STN_UNDEF
)
14179 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
14180 else if (unresolved_reloc
)
14182 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
14183 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
14185 unresolved_reloc
= TRUE
;
14188 /* TOC16 relocs. We want the offset relative to the TOC base,
14189 which is the address of the start of the TOC plus 0x8000.
14190 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14192 case R_PPC64_TOC16
:
14193 case R_PPC64_TOC16_LO
:
14194 case R_PPC64_TOC16_HI
:
14195 case R_PPC64_TOC16_DS
:
14196 case R_PPC64_TOC16_LO_DS
:
14197 case R_PPC64_TOC16_HA
:
14198 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
14201 /* Relocate against the beginning of the section. */
14202 case R_PPC64_SECTOFF
:
14203 case R_PPC64_SECTOFF_LO
:
14204 case R_PPC64_SECTOFF_HI
:
14205 case R_PPC64_SECTOFF_DS
:
14206 case R_PPC64_SECTOFF_LO_DS
:
14207 case R_PPC64_SECTOFF_HA
:
14209 addend
-= sec
->output_section
->vma
;
14212 case R_PPC64_REL16
:
14213 case R_PPC64_REL16_LO
:
14214 case R_PPC64_REL16_HI
:
14215 case R_PPC64_REL16_HA
:
14218 case R_PPC64_REL14
:
14219 case R_PPC64_REL14_BRNTAKEN
:
14220 case R_PPC64_REL14_BRTAKEN
:
14221 case R_PPC64_REL24
:
14224 case R_PPC64_TPREL16
:
14225 case R_PPC64_TPREL16_LO
:
14226 case R_PPC64_TPREL16_HI
:
14227 case R_PPC64_TPREL16_HA
:
14228 case R_PPC64_TPREL16_DS
:
14229 case R_PPC64_TPREL16_LO_DS
:
14230 case R_PPC64_TPREL16_HIGH
:
14231 case R_PPC64_TPREL16_HIGHA
:
14232 case R_PPC64_TPREL16_HIGHER
:
14233 case R_PPC64_TPREL16_HIGHERA
:
14234 case R_PPC64_TPREL16_HIGHEST
:
14235 case R_PPC64_TPREL16_HIGHESTA
:
14237 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14238 && h
->elf
.dynindx
== -1)
14240 /* Make this relocation against an undefined weak symbol
14241 resolve to zero. This is really just a tweak, since
14242 code using weak externs ought to check that they are
14243 defined before using them. */
14244 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14246 insn
= bfd_get_32 (output_bfd
, p
);
14247 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14249 bfd_put_32 (output_bfd
, insn
, p
);
14252 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14254 /* The TPREL16 relocs shouldn't really be used in shared
14255 libs as they will result in DT_TEXTREL being set, but
14256 support them anyway. */
14260 case R_PPC64_DTPREL16
:
14261 case R_PPC64_DTPREL16_LO
:
14262 case R_PPC64_DTPREL16_HI
:
14263 case R_PPC64_DTPREL16_HA
:
14264 case R_PPC64_DTPREL16_DS
:
14265 case R_PPC64_DTPREL16_LO_DS
:
14266 case R_PPC64_DTPREL16_HIGH
:
14267 case R_PPC64_DTPREL16_HIGHA
:
14268 case R_PPC64_DTPREL16_HIGHER
:
14269 case R_PPC64_DTPREL16_HIGHERA
:
14270 case R_PPC64_DTPREL16_HIGHEST
:
14271 case R_PPC64_DTPREL16_HIGHESTA
:
14272 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14275 case R_PPC64_ADDR64_LOCAL
:
14276 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14281 case R_PPC64_DTPMOD64
:
14286 case R_PPC64_TPREL64
:
14287 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14290 case R_PPC64_DTPREL64
:
14291 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14294 /* Relocations that may need to be propagated if this is a
14296 case R_PPC64_REL30
:
14297 case R_PPC64_REL32
:
14298 case R_PPC64_REL64
:
14299 case R_PPC64_ADDR14
:
14300 case R_PPC64_ADDR14_BRNTAKEN
:
14301 case R_PPC64_ADDR14_BRTAKEN
:
14302 case R_PPC64_ADDR16
:
14303 case R_PPC64_ADDR16_DS
:
14304 case R_PPC64_ADDR16_HA
:
14305 case R_PPC64_ADDR16_HI
:
14306 case R_PPC64_ADDR16_HIGH
:
14307 case R_PPC64_ADDR16_HIGHA
:
14308 case R_PPC64_ADDR16_HIGHER
:
14309 case R_PPC64_ADDR16_HIGHERA
:
14310 case R_PPC64_ADDR16_HIGHEST
:
14311 case R_PPC64_ADDR16_HIGHESTA
:
14312 case R_PPC64_ADDR16_LO
:
14313 case R_PPC64_ADDR16_LO_DS
:
14314 case R_PPC64_ADDR24
:
14315 case R_PPC64_ADDR32
:
14316 case R_PPC64_ADDR64
:
14317 case R_PPC64_UADDR16
:
14318 case R_PPC64_UADDR32
:
14319 case R_PPC64_UADDR64
:
14321 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14324 if (NO_OPD_RELOCS
&& is_opd
)
14329 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14330 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14331 && (must_be_dyn_reloc (info
, r_type
)
14332 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14333 || (ELIMINATE_COPY_RELOCS
14336 && h
->elf
.dynindx
!= -1
14337 && !h
->elf
.non_got_ref
14338 && !h
->elf
.def_regular
)
14341 ? h
->elf
.type
== STT_GNU_IFUNC
14342 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14344 bfd_boolean skip
, relocate
;
14348 /* When generating a dynamic object, these relocations
14349 are copied into the output file to be resolved at run
14355 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14356 input_section
, rel
->r_offset
);
14357 if (out_off
== (bfd_vma
) -1)
14359 else if (out_off
== (bfd_vma
) -2)
14360 skip
= TRUE
, relocate
= TRUE
;
14361 out_off
+= (input_section
->output_section
->vma
14362 + input_section
->output_offset
);
14363 outrel
.r_offset
= out_off
;
14364 outrel
.r_addend
= rel
->r_addend
;
14366 /* Optimize unaligned reloc use. */
14367 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14368 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14369 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14370 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14371 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14372 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14373 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14374 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14375 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14378 memset (&outrel
, 0, sizeof outrel
);
14379 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14381 && r_type
!= R_PPC64_TOC
)
14383 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14384 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14388 /* This symbol is local, or marked to become local,
14389 or this is an opd section reloc which must point
14390 at a local function. */
14391 outrel
.r_addend
+= relocation
;
14392 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14394 if (is_opd
&& h
!= NULL
)
14396 /* Lie about opd entries. This case occurs
14397 when building shared libraries and we
14398 reference a function in another shared
14399 lib. The same thing happens for a weak
14400 definition in an application that's
14401 overridden by a strong definition in a
14402 shared lib. (I believe this is a generic
14403 bug in binutils handling of weak syms.)
14404 In these cases we won't use the opd
14405 entry in this lib. */
14406 unresolved_reloc
= FALSE
;
14409 && r_type
== R_PPC64_ADDR64
14411 ? h
->elf
.type
== STT_GNU_IFUNC
14412 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14413 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14416 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14418 /* We need to relocate .opd contents for ld.so.
14419 Prelink also wants simple and consistent rules
14420 for relocs. This make all RELATIVE relocs have
14421 *r_offset equal to r_addend. */
14430 ? h
->elf
.type
== STT_GNU_IFUNC
14431 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14433 info
->callbacks
->einfo
14434 (_("%P: %H: %s for indirect "
14435 "function `%T' unsupported\n"),
14436 input_bfd
, input_section
, rel
->r_offset
,
14437 ppc64_elf_howto_table
[r_type
]->name
,
14441 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14443 else if (sec
== NULL
|| sec
->owner
== NULL
)
14445 bfd_set_error (bfd_error_bad_value
);
14452 osec
= sec
->output_section
;
14453 indx
= elf_section_data (osec
)->dynindx
;
14457 if ((osec
->flags
& SEC_READONLY
) == 0
14458 && htab
->elf
.data_index_section
!= NULL
)
14459 osec
= htab
->elf
.data_index_section
;
14461 osec
= htab
->elf
.text_index_section
;
14462 indx
= elf_section_data (osec
)->dynindx
;
14464 BFD_ASSERT (indx
!= 0);
14466 /* We are turning this relocation into one
14467 against a section symbol, so subtract out
14468 the output section's address but not the
14469 offset of the input section in the output
14471 outrel
.r_addend
-= osec
->vma
;
14474 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14478 sreloc
= elf_section_data (input_section
)->sreloc
;
14480 ? h
->elf
.type
== STT_GNU_IFUNC
14481 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14482 sreloc
= htab
->elf
.irelplt
;
14483 if (sreloc
== NULL
)
14486 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14489 loc
= sreloc
->contents
;
14490 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14491 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14493 /* If this reloc is against an external symbol, it will
14494 be computed at runtime, so there's no need to do
14495 anything now. However, for the sake of prelink ensure
14496 that the section contents are a known value. */
14499 unresolved_reloc
= FALSE
;
14500 /* The value chosen here is quite arbitrary as ld.so
14501 ignores section contents except for the special
14502 case of .opd where the contents might be accessed
14503 before relocation. Choose zero, as that won't
14504 cause reloc overflow. */
14507 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14508 to improve backward compatibility with older
14510 if (r_type
== R_PPC64_ADDR64
)
14511 addend
= outrel
.r_addend
;
14512 /* Adjust pc_relative relocs to have zero in *r_offset. */
14513 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14514 addend
= (input_section
->output_section
->vma
14515 + input_section
->output_offset
14522 case R_PPC64_GLOB_DAT
:
14523 case R_PPC64_JMP_SLOT
:
14524 case R_PPC64_JMP_IREL
:
14525 case R_PPC64_RELATIVE
:
14526 /* We shouldn't ever see these dynamic relocs in relocatable
14528 /* Fall through. */
14530 case R_PPC64_PLTGOT16
:
14531 case R_PPC64_PLTGOT16_DS
:
14532 case R_PPC64_PLTGOT16_HA
:
14533 case R_PPC64_PLTGOT16_HI
:
14534 case R_PPC64_PLTGOT16_LO
:
14535 case R_PPC64_PLTGOT16_LO_DS
:
14536 case R_PPC64_PLTREL32
:
14537 case R_PPC64_PLTREL64
:
14538 /* These ones haven't been implemented yet. */
14540 info
->callbacks
->einfo
14541 (_("%P: %B: %s is not supported for `%T'\n"),
14543 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14545 bfd_set_error (bfd_error_invalid_operation
);
14550 /* Multi-instruction sequences that access the TOC can be
14551 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14552 to nop; addi rb,r2,x; */
14558 case R_PPC64_GOT_TLSLD16_HI
:
14559 case R_PPC64_GOT_TLSGD16_HI
:
14560 case R_PPC64_GOT_TPREL16_HI
:
14561 case R_PPC64_GOT_DTPREL16_HI
:
14562 case R_PPC64_GOT16_HI
:
14563 case R_PPC64_TOC16_HI
:
14564 /* These relocs would only be useful if building up an
14565 offset to later add to r2, perhaps in an indexed
14566 addressing mode instruction. Don't try to optimize.
14567 Unfortunately, the possibility of someone building up an
14568 offset like this or even with the HA relocs, means that
14569 we need to check the high insn when optimizing the low
14573 case R_PPC64_GOT_TLSLD16_HA
:
14574 case R_PPC64_GOT_TLSGD16_HA
:
14575 case R_PPC64_GOT_TPREL16_HA
:
14576 case R_PPC64_GOT_DTPREL16_HA
:
14577 case R_PPC64_GOT16_HA
:
14578 case R_PPC64_TOC16_HA
:
14579 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14580 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14582 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14583 bfd_put_32 (input_bfd
, NOP
, p
);
14587 case R_PPC64_GOT_TLSLD16_LO
:
14588 case R_PPC64_GOT_TLSGD16_LO
:
14589 case R_PPC64_GOT_TPREL16_LO_DS
:
14590 case R_PPC64_GOT_DTPREL16_LO_DS
:
14591 case R_PPC64_GOT16_LO
:
14592 case R_PPC64_GOT16_LO_DS
:
14593 case R_PPC64_TOC16_LO
:
14594 case R_PPC64_TOC16_LO_DS
:
14595 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14596 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14598 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14599 insn
= bfd_get_32 (input_bfd
, p
);
14600 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14602 /* Transform addic to addi when we change reg. */
14603 insn
&= ~((0x3f << 26) | (0x1f << 16));
14604 insn
|= (14u << 26) | (2 << 16);
14608 insn
&= ~(0x1f << 16);
14611 bfd_put_32 (input_bfd
, insn
, p
);
14616 /* Do any further special processing. */
14617 howto
= ppc64_elf_howto_table
[(int) r_type
];
14623 case R_PPC64_REL16_HA
:
14624 case R_PPC64_ADDR16_HA
:
14625 case R_PPC64_ADDR16_HIGHA
:
14626 case R_PPC64_ADDR16_HIGHERA
:
14627 case R_PPC64_ADDR16_HIGHESTA
:
14628 case R_PPC64_TOC16_HA
:
14629 case R_PPC64_SECTOFF_HA
:
14630 case R_PPC64_TPREL16_HA
:
14631 case R_PPC64_TPREL16_HIGHA
:
14632 case R_PPC64_TPREL16_HIGHERA
:
14633 case R_PPC64_TPREL16_HIGHESTA
:
14634 case R_PPC64_DTPREL16_HA
:
14635 case R_PPC64_DTPREL16_HIGHA
:
14636 case R_PPC64_DTPREL16_HIGHERA
:
14637 case R_PPC64_DTPREL16_HIGHESTA
:
14638 /* It's just possible that this symbol is a weak symbol
14639 that's not actually defined anywhere. In that case,
14640 'sec' would be NULL, and we should leave the symbol
14641 alone (it will be set to zero elsewhere in the link). */
14646 case R_PPC64_GOT16_HA
:
14647 case R_PPC64_PLTGOT16_HA
:
14648 case R_PPC64_PLT16_HA
:
14649 case R_PPC64_GOT_TLSGD16_HA
:
14650 case R_PPC64_GOT_TLSLD16_HA
:
14651 case R_PPC64_GOT_TPREL16_HA
:
14652 case R_PPC64_GOT_DTPREL16_HA
:
14653 /* Add 0x10000 if sign bit in 0:15 is set.
14654 Bits 0:15 are not used. */
14658 case R_PPC64_ADDR16_DS
:
14659 case R_PPC64_ADDR16_LO_DS
:
14660 case R_PPC64_GOT16_DS
:
14661 case R_PPC64_GOT16_LO_DS
:
14662 case R_PPC64_PLT16_LO_DS
:
14663 case R_PPC64_SECTOFF_DS
:
14664 case R_PPC64_SECTOFF_LO_DS
:
14665 case R_PPC64_TOC16_DS
:
14666 case R_PPC64_TOC16_LO_DS
:
14667 case R_PPC64_PLTGOT16_DS
:
14668 case R_PPC64_PLTGOT16_LO_DS
:
14669 case R_PPC64_GOT_TPREL16_DS
:
14670 case R_PPC64_GOT_TPREL16_LO_DS
:
14671 case R_PPC64_GOT_DTPREL16_DS
:
14672 case R_PPC64_GOT_DTPREL16_LO_DS
:
14673 case R_PPC64_TPREL16_DS
:
14674 case R_PPC64_TPREL16_LO_DS
:
14675 case R_PPC64_DTPREL16_DS
:
14676 case R_PPC64_DTPREL16_LO_DS
:
14677 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14679 /* If this reloc is against an lq insn, then the value must be
14680 a multiple of 16. This is somewhat of a hack, but the
14681 "correct" way to do this by defining _DQ forms of all the
14682 _DS relocs bloats all reloc switches in this file. It
14683 doesn't seem to make much sense to use any of these relocs
14684 in data, so testing the insn should be safe. */
14685 if ((insn
& (0x3f << 26)) == (56u << 26))
14687 if (((relocation
+ addend
) & mask
) != 0)
14689 info
->callbacks
->einfo
14690 (_("%P: %H: error: %s not a multiple of %u\n"),
14691 input_bfd
, input_section
, rel
->r_offset
,
14694 bfd_set_error (bfd_error_bad_value
);
14701 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14702 because such sections are not SEC_ALLOC and thus ld.so will
14703 not process them. */
14704 if (unresolved_reloc
14705 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
14706 && h
->elf
.def_dynamic
)
14707 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
14708 rel
->r_offset
) != (bfd_vma
) -1)
14710 info
->callbacks
->einfo
14711 (_("%P: %H: unresolvable %s against `%T'\n"),
14712 input_bfd
, input_section
, rel
->r_offset
,
14714 h
->elf
.root
.root
.string
);
14718 /* 16-bit fields in insns mostly have signed values, but a
14719 few insns have 16-bit unsigned values. Really, we should
14720 have different reloc types. */
14721 if (howto
->complain_on_overflow
!= complain_overflow_dont
14722 && howto
->dst_mask
== 0xffff
14723 && (input_section
->flags
& SEC_CODE
) != 0)
14725 enum complain_overflow complain
= complain_overflow_signed
;
14727 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14728 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
14729 complain
= complain_overflow_bitfield
;
14730 else if (howto
->rightshift
== 0
14731 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
14732 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
14733 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
14734 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
14735 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
14736 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
14737 complain
= complain_overflow_unsigned
;
14738 if (howto
->complain_on_overflow
!= complain
)
14740 alt_howto
= *howto
;
14741 alt_howto
.complain_on_overflow
= complain
;
14742 howto
= &alt_howto
;
14746 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
14747 rel
->r_offset
, relocation
, addend
);
14749 if (r
!= bfd_reloc_ok
)
14751 char *more_info
= NULL
;
14752 const char *reloc_name
= howto
->name
;
14754 if (reloc_dest
!= DEST_NORMAL
)
14756 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14757 if (more_info
!= NULL
)
14759 strcpy (more_info
, reloc_name
);
14760 strcat (more_info
, (reloc_dest
== DEST_OPD
14761 ? " (OPD)" : " (stub)"));
14762 reloc_name
= more_info
;
14766 if (r
== bfd_reloc_overflow
)
14771 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14772 && howto
->pc_relative
)
14774 /* Assume this is a call protected by other code that
14775 detects the symbol is undefined. If this is the case,
14776 we can safely ignore the overflow. If not, the
14777 program is hosed anyway, and a little warning isn't
14783 if (!((*info
->callbacks
->reloc_overflow
)
14784 (info
, &h
->elf
.root
, sym_name
,
14785 reloc_name
, orig_rel
.r_addend
,
14786 input_bfd
, input_section
, rel
->r_offset
)))
14791 info
->callbacks
->einfo
14792 (_("%P: %H: %s against `%T': error %d\n"),
14793 input_bfd
, input_section
, rel
->r_offset
,
14794 reloc_name
, sym_name
, (int) r
);
14797 if (more_info
!= NULL
)
14802 /* If we're emitting relocations, then shortly after this function
14803 returns, reloc offsets and addends for this section will be
14804 adjusted. Worse, reloc symbol indices will be for the output
14805 file rather than the input. Save a copy of the relocs for
14806 opd_entry_value. */
14807 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14810 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14811 rel
= bfd_alloc (input_bfd
, amt
);
14812 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
14813 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
14816 memcpy (rel
, relocs
, amt
);
14821 /* Adjust the value of any local symbols in opd sections. */
14824 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14825 const char *name ATTRIBUTE_UNUSED
,
14826 Elf_Internal_Sym
*elfsym
,
14827 asection
*input_sec
,
14828 struct elf_link_hash_entry
*h
)
14830 struct _opd_sec_data
*opd
;
14837 opd
= get_opd_info (input_sec
);
14838 if (opd
== NULL
|| opd
->adjust
== NULL
)
14841 value
= elfsym
->st_value
- input_sec
->output_offset
;
14842 if (!info
->relocatable
)
14843 value
-= input_sec
->output_section
->vma
;
14845 adjust
= opd
->adjust
[value
/ 8];
14849 elfsym
->st_value
+= adjust
;
14853 /* Finish up dynamic symbol handling. We set the contents of various
14854 dynamic sections here. */
14857 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14858 struct bfd_link_info
*info
,
14859 struct elf_link_hash_entry
*h
,
14860 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14862 struct ppc_link_hash_table
*htab
;
14863 struct plt_entry
*ent
;
14864 Elf_Internal_Rela rela
;
14867 htab
= ppc_hash_table (info
);
14871 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14872 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14874 /* This symbol has an entry in the procedure linkage
14875 table. Set it up. */
14876 if (!htab
->elf
.dynamic_sections_created
14877 || h
->dynindx
== -1)
14879 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14881 && (h
->root
.type
== bfd_link_hash_defined
14882 || h
->root
.type
== bfd_link_hash_defweak
));
14883 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
14884 + htab
->elf
.iplt
->output_offset
14885 + ent
->plt
.offset
);
14887 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14889 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14890 rela
.r_addend
= (h
->root
.u
.def
.value
14891 + h
->root
.u
.def
.section
->output_offset
14892 + h
->root
.u
.def
.section
->output_section
->vma
14894 loc
= (htab
->elf
.irelplt
->contents
14895 + (htab
->elf
.irelplt
->reloc_count
++
14896 * sizeof (Elf64_External_Rela
)));
14900 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
14901 + htab
->elf
.splt
->output_offset
14902 + ent
->plt
.offset
);
14903 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14904 rela
.r_addend
= ent
->addend
;
14905 loc
= (htab
->elf
.srelplt
->contents
14906 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
14907 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
14909 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14911 if (!htab
->opd_abi
)
14913 if (!h
->def_regular
)
14915 /* Mark the symbol as undefined, rather than as
14916 defined in glink. Leave the value if there were
14917 any relocations where pointer equality matters
14918 (this is a clue for the dynamic linker, to make
14919 function pointer comparisons work between an
14920 application and shared library), otherwise set it
14922 sym
->st_shndx
= SHN_UNDEF
;
14923 if (!h
->pointer_equality_needed
)
14925 else if (!h
->ref_regular_nonweak
)
14927 /* This breaks function pointer comparisons, but
14928 that is better than breaking tests for a NULL
14929 function pointer. */
14938 /* This symbol needs a copy reloc. Set it up. */
14940 if (h
->dynindx
== -1
14941 || (h
->root
.type
!= bfd_link_hash_defined
14942 && h
->root
.type
!= bfd_link_hash_defweak
)
14943 || htab
->relbss
== NULL
)
14946 rela
.r_offset
= (h
->root
.u
.def
.value
14947 + h
->root
.u
.def
.section
->output_section
->vma
14948 + h
->root
.u
.def
.section
->output_offset
);
14949 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
14951 loc
= htab
->relbss
->contents
;
14952 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14953 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14959 /* Used to decide how to sort relocs in an optimal manner for the
14960 dynamic linker, before writing them out. */
14962 static enum elf_reloc_type_class
14963 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
14964 const asection
*rel_sec
,
14965 const Elf_Internal_Rela
*rela
)
14967 enum elf_ppc64_reloc_type r_type
;
14968 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
14970 if (rel_sec
== htab
->elf
.irelplt
)
14971 return reloc_class_ifunc
;
14973 r_type
= ELF64_R_TYPE (rela
->r_info
);
14976 case R_PPC64_RELATIVE
:
14977 return reloc_class_relative
;
14978 case R_PPC64_JMP_SLOT
:
14979 return reloc_class_plt
;
14981 return reloc_class_copy
;
14983 return reloc_class_normal
;
14987 /* Finish up the dynamic sections. */
14990 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
14991 struct bfd_link_info
*info
)
14993 struct ppc_link_hash_table
*htab
;
14997 htab
= ppc_hash_table (info
);
15001 dynobj
= htab
->elf
.dynobj
;
15002 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15004 if (htab
->elf
.dynamic_sections_created
)
15006 Elf64_External_Dyn
*dyncon
, *dynconend
;
15008 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15011 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15012 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15013 for (; dyncon
< dynconend
; dyncon
++)
15015 Elf_Internal_Dyn dyn
;
15018 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15025 case DT_PPC64_GLINK
:
15027 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15028 /* We stupidly defined DT_PPC64_GLINK to be the start
15029 of glink rather than the first entry point, which is
15030 what ld.so needs, and now have a bigger stub to
15031 support automatic multiple TOCs. */
15032 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15036 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15039 dyn
.d_un
.d_ptr
= s
->vma
;
15043 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15044 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15047 case DT_PPC64_OPDSZ
:
15048 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15051 dyn
.d_un
.d_val
= s
->size
;
15055 s
= htab
->elf
.splt
;
15056 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15060 s
= htab
->elf
.srelplt
;
15061 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15065 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15069 /* Don't count procedure linkage table relocs in the
15070 overall reloc count. */
15071 s
= htab
->elf
.srelplt
;
15074 dyn
.d_un
.d_val
-= s
->size
;
15078 /* We may not be using the standard ELF linker script.
15079 If .rela.plt is the first .rela section, we adjust
15080 DT_RELA to not include it. */
15081 s
= htab
->elf
.srelplt
;
15084 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
15086 dyn
.d_un
.d_ptr
+= s
->size
;
15090 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15094 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15096 /* Fill in the first entry in the global offset table.
15097 We use it to hold the link-time TOCbase. */
15098 bfd_put_64 (output_bfd
,
15099 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15100 htab
->elf
.sgot
->contents
);
15102 /* Set .got entry size. */
15103 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15106 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15108 /* Set .plt entry size. */
15109 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15110 = PLT_ENTRY_SIZE (htab
);
15113 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15114 brlt ourselves if emitrelocations. */
15115 if (htab
->brlt
!= NULL
15116 && htab
->brlt
->reloc_count
!= 0
15117 && !_bfd_elf_link_output_relocs (output_bfd
,
15119 elf_section_data (htab
->brlt
)->rela
.hdr
,
15120 elf_section_data (htab
->brlt
)->relocs
,
15124 if (htab
->glink
!= NULL
15125 && htab
->glink
->reloc_count
!= 0
15126 && !_bfd_elf_link_output_relocs (output_bfd
,
15128 elf_section_data (htab
->glink
)->rela
.hdr
,
15129 elf_section_data (htab
->glink
)->relocs
,
15133 if (htab
->glink_eh_frame
!= NULL
15134 && htab
->glink_eh_frame
->size
!= 0)
15138 asection
*stub_sec
;
15140 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15141 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15143 stub_sec
= stub_sec
->next
)
15144 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15150 /* Offset to stub section. */
15151 val
= (stub_sec
->output_section
->vma
15152 + stub_sec
->output_offset
);
15153 val
-= (htab
->glink_eh_frame
->output_section
->vma
15154 + htab
->glink_eh_frame
->output_offset
15155 + (p
- htab
->glink_eh_frame
->contents
));
15156 if (val
+ 0x80000000 > 0xffffffff)
15158 info
->callbacks
->einfo
15159 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15163 bfd_put_32 (dynobj
, val
, p
);
15165 /* stub section size. */
15167 /* Augmentation. */
15172 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15178 /* Offset to .glink. */
15179 val
= (htab
->glink
->output_section
->vma
15180 + htab
->glink
->output_offset
15182 val
-= (htab
->glink_eh_frame
->output_section
->vma
15183 + htab
->glink_eh_frame
->output_offset
15184 + (p
- htab
->glink_eh_frame
->contents
));
15185 if (val
+ 0x80000000 > 0xffffffff)
15187 info
->callbacks
->einfo
15188 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15189 htab
->glink
->name
);
15192 bfd_put_32 (dynobj
, val
, p
);
15196 /* Augmentation. */
15202 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15203 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15204 htab
->glink_eh_frame
,
15205 htab
->glink_eh_frame
->contents
))
15209 /* We need to handle writing out multiple GOT sections ourselves,
15210 since we didn't add them to DYNOBJ. We know dynobj is the first
15212 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15216 if (!is_ppc64_elf (dynobj
))
15219 s
= ppc64_elf_tdata (dynobj
)->got
;
15222 && s
->output_section
!= bfd_abs_section_ptr
15223 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15224 s
->contents
, s
->output_offset
,
15227 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15230 && s
->output_section
!= bfd_abs_section_ptr
15231 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15232 s
->contents
, s
->output_offset
,
15240 #include "elf64-target.h"
15242 /* FreeBSD support */
15244 #undef TARGET_LITTLE_SYM
15245 #undef TARGET_LITTLE_NAME
15247 #undef TARGET_BIG_SYM
15248 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15249 #undef TARGET_BIG_NAME
15250 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15253 #define ELF_OSABI ELFOSABI_FREEBSD
15256 #define elf64_bed elf64_powerpc_fbsd_bed
15258 #include "elf64-target.h"