1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 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 0x10000
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_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
105 #define elf_backend_gc_keep ppc64_elf_gc_keep
106 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
107 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* glink call stub instructions. We enter with the index in R0. */
191 #define GLINK_CALL_STUB_SIZE (16*4)
195 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
196 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
198 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
199 /* ld %2,(0b-1b)(%11) */
200 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
201 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
207 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
208 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
209 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
210 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
211 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
214 #define NOP 0x60000000
216 /* Some other nops. */
217 #define CROR_151515 0x4def7b82
218 #define CROR_313131 0x4ffffb82
220 /* .glink entries for the first 32k functions are two instructions. */
221 #define LI_R0_0 0x38000000 /* li %r0,0 */
222 #define B_DOT 0x48000000 /* b . */
224 /* After that, we need two instructions to load the index, followed by
226 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
227 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
229 /* Instructions used by the save and restore reg functions. */
230 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
231 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
232 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
233 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
234 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
235 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
236 #define LI_R12_0 0x39800000 /* li %r12,0 */
237 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
238 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
239 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
240 #define BLR 0x4e800020 /* blr */
242 /* Since .opd is an array of descriptors and each entry will end up
243 with identical R_PPC64_RELATIVE relocs, there is really no need to
244 propagate .opd relocs; The dynamic linker should be taught to
245 relocate .opd without reloc entries. */
246 #ifndef NO_OPD_RELOCS
247 #define NO_OPD_RELOCS 0
251 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
255 abiversion (bfd
*abfd
)
257 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
261 set_abiversion (bfd
*abfd
, int ver
)
263 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
264 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
267 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
269 /* Relocation HOWTO's. */
270 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
272 static reloc_howto_type ppc64_elf_howto_raw
[] = {
273 /* This reloc does nothing. */
274 HOWTO (R_PPC64_NONE
, /* type */
276 3, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE
, /* pc_relative */
280 complain_overflow_dont
, /* complain_on_overflow */
281 bfd_elf_generic_reloc
, /* special_function */
282 "R_PPC64_NONE", /* name */
283 FALSE
, /* partial_inplace */
286 FALSE
), /* pcrel_offset */
288 /* A standard 32 bit relocation. */
289 HOWTO (R_PPC64_ADDR32
, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE
, /* pc_relative */
295 complain_overflow_bitfield
, /* complain_on_overflow */
296 bfd_elf_generic_reloc
, /* special_function */
297 "R_PPC64_ADDR32", /* name */
298 FALSE
, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 FALSE
), /* pcrel_offset */
303 /* An absolute 26 bit branch; the lower two bits must be zero.
304 FIXME: we don't check that, we just clear them. */
305 HOWTO (R_PPC64_ADDR24
, /* type */
307 2, /* 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_ADDR24", /* name */
314 FALSE
, /* partial_inplace */
316 0x03fffffc, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* A standard 16 bit relocation. */
320 HOWTO (R_PPC64_ADDR16
, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_bitfield
, /* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC64_ADDR16", /* name */
329 FALSE
, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* A 16 bit relocation without overflow. */
335 HOWTO (R_PPC64_ADDR16_LO
, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_dont
,/* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC64_ADDR16_LO", /* name */
344 FALSE
, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* Bits 16-31 of an address. */
350 HOWTO (R_PPC64_ADDR16_HI
, /* type */
352 1, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE
, /* pc_relative */
356 complain_overflow_signed
, /* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_PPC64_ADDR16_HI", /* name */
359 FALSE
, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE
), /* pcrel_offset */
364 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
365 bits, treated as a signed number, is negative. */
366 HOWTO (R_PPC64_ADDR16_HA
, /* type */
368 1, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE
, /* pc_relative */
372 complain_overflow_signed
, /* complain_on_overflow */
373 ppc64_elf_ha_reloc
, /* special_function */
374 "R_PPC64_ADDR16_HA", /* name */
375 FALSE
, /* partial_inplace */
377 0xffff, /* dst_mask */
378 FALSE
), /* pcrel_offset */
380 /* An absolute 16 bit branch; the lower two bits must be zero.
381 FIXME: we don't check that, we just clear them. */
382 HOWTO (R_PPC64_ADDR14
, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 FALSE
, /* pc_relative */
388 complain_overflow_signed
, /* complain_on_overflow */
389 ppc64_elf_branch_reloc
, /* special_function */
390 "R_PPC64_ADDR14", /* name */
391 FALSE
, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 FALSE
), /* pcrel_offset */
396 /* An absolute 16 bit branch, for which bit 10 should be set to
397 indicate that the branch is expected to be taken. The lower two
398 bits must be zero. */
399 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 FALSE
, /* pc_relative */
405 complain_overflow_signed
, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc
, /* special_function */
407 "R_PPC64_ADDR14_BRTAKEN",/* name */
408 FALSE
, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 FALSE
), /* pcrel_offset */
413 /* An absolute 16 bit branch, for which bit 10 should be set to
414 indicate that the branch is not expected to be taken. The lower
415 two bits must be zero. */
416 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE
, /* pc_relative */
422 complain_overflow_signed
, /* complain_on_overflow */
423 ppc64_elf_brtaken_reloc
, /* special_function */
424 "R_PPC64_ADDR14_BRNTAKEN",/* name */
425 FALSE
, /* partial_inplace */
427 0x0000fffc, /* dst_mask */
428 FALSE
), /* pcrel_offset */
430 /* A relative 26 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL24
, /* 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_REL24", /* name */
440 FALSE
, /* partial_inplace */
442 0x03fffffc, /* dst_mask */
443 TRUE
), /* pcrel_offset */
445 /* A relative 16 bit branch; the lower two bits must be zero. */
446 HOWTO (R_PPC64_REL14
, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE
, /* pc_relative */
452 complain_overflow_signed
, /* complain_on_overflow */
453 ppc64_elf_branch_reloc
, /* special_function */
454 "R_PPC64_REL14", /* name */
455 FALSE
, /* partial_inplace */
457 0x0000fffc, /* dst_mask */
458 TRUE
), /* pcrel_offset */
460 /* A relative 16 bit branch. Bit 10 should be set to indicate that
461 the branch is expected to be taken. The lower two bits must be
463 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
467 TRUE
, /* pc_relative */
469 complain_overflow_signed
, /* complain_on_overflow */
470 ppc64_elf_brtaken_reloc
, /* special_function */
471 "R_PPC64_REL14_BRTAKEN", /* name */
472 FALSE
, /* partial_inplace */
474 0x0000fffc, /* dst_mask */
475 TRUE
), /* pcrel_offset */
477 /* A relative 16 bit branch. Bit 10 should be set to indicate that
478 the branch is not expected to be taken. The lower two bits must
480 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 TRUE
, /* pc_relative */
486 complain_overflow_signed
, /* complain_on_overflow */
487 ppc64_elf_brtaken_reloc
, /* special_function */
488 "R_PPC64_REL14_BRNTAKEN",/* name */
489 FALSE
, /* partial_inplace */
491 0x0000fffc, /* dst_mask */
492 TRUE
), /* pcrel_offset */
494 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
496 HOWTO (R_PPC64_GOT16
, /* type */
498 1, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE
, /* pc_relative */
502 complain_overflow_signed
, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc
, /* special_function */
504 "R_PPC64_GOT16", /* name */
505 FALSE
, /* partial_inplace */
507 0xffff, /* dst_mask */
508 FALSE
), /* pcrel_offset */
510 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
512 HOWTO (R_PPC64_GOT16_LO
, /* type */
514 1, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE
, /* pc_relative */
518 complain_overflow_dont
, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc
, /* special_function */
520 "R_PPC64_GOT16_LO", /* name */
521 FALSE
, /* partial_inplace */
523 0xffff, /* dst_mask */
524 FALSE
), /* pcrel_offset */
526 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
528 HOWTO (R_PPC64_GOT16_HI
, /* type */
530 1, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE
, /* pc_relative */
534 complain_overflow_signed
,/* complain_on_overflow */
535 ppc64_elf_unhandled_reloc
, /* special_function */
536 "R_PPC64_GOT16_HI", /* name */
537 FALSE
, /* partial_inplace */
539 0xffff, /* dst_mask */
540 FALSE
), /* pcrel_offset */
542 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
544 HOWTO (R_PPC64_GOT16_HA
, /* type */
546 1, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE
, /* pc_relative */
550 complain_overflow_signed
,/* complain_on_overflow */
551 ppc64_elf_unhandled_reloc
, /* special_function */
552 "R_PPC64_GOT16_HA", /* name */
553 FALSE
, /* partial_inplace */
555 0xffff, /* dst_mask */
556 FALSE
), /* pcrel_offset */
558 /* This is used only by the dynamic linker. The symbol should exist
559 both in the object being run and in some shared library. The
560 dynamic linker copies the data addressed by the symbol from the
561 shared library into the object, because the object being
562 run has to have the data at some particular address. */
563 HOWTO (R_PPC64_COPY
, /* type */
565 0, /* this one is variable size */
567 FALSE
, /* pc_relative */
569 complain_overflow_dont
, /* complain_on_overflow */
570 ppc64_elf_unhandled_reloc
, /* special_function */
571 "R_PPC64_COPY", /* name */
572 FALSE
, /* partial_inplace */
575 FALSE
), /* pcrel_offset */
577 /* Like R_PPC64_ADDR64, but used when setting global offset table
579 HOWTO (R_PPC64_GLOB_DAT
, /* type */
581 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
583 FALSE
, /* pc_relative */
585 complain_overflow_dont
, /* complain_on_overflow */
586 ppc64_elf_unhandled_reloc
, /* special_function */
587 "R_PPC64_GLOB_DAT", /* name */
588 FALSE
, /* partial_inplace */
590 ONES (64), /* dst_mask */
591 FALSE
), /* pcrel_offset */
593 /* Created by the link editor. Marks a procedure linkage table
594 entry for a symbol. */
595 HOWTO (R_PPC64_JMP_SLOT
, /* type */
597 0, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE
, /* pc_relative */
601 complain_overflow_dont
, /* complain_on_overflow */
602 ppc64_elf_unhandled_reloc
, /* special_function */
603 "R_PPC64_JMP_SLOT", /* name */
604 FALSE
, /* partial_inplace */
607 FALSE
), /* pcrel_offset */
609 /* Used only by the dynamic linker. When the object is run, this
610 doubleword64 is set to the load address of the object, plus the
612 HOWTO (R_PPC64_RELATIVE
, /* type */
614 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
616 FALSE
, /* pc_relative */
618 complain_overflow_dont
, /* complain_on_overflow */
619 bfd_elf_generic_reloc
, /* special_function */
620 "R_PPC64_RELATIVE", /* name */
621 FALSE
, /* partial_inplace */
623 ONES (64), /* dst_mask */
624 FALSE
), /* pcrel_offset */
626 /* Like R_PPC64_ADDR32, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR32
, /* type */
629 2, /* 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_UADDR32", /* name */
636 FALSE
, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 FALSE
), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16, but may be unaligned. */
642 HOWTO (R_PPC64_UADDR16
, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE
, /* pc_relative */
648 complain_overflow_bitfield
, /* complain_on_overflow */
649 bfd_elf_generic_reloc
, /* special_function */
650 "R_PPC64_UADDR16", /* name */
651 FALSE
, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE
), /* pcrel_offset */
656 /* 32-bit PC relative. */
657 HOWTO (R_PPC64_REL32
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 TRUE
, /* pc_relative */
663 complain_overflow_signed
, /* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_PPC64_REL32", /* name */
666 FALSE
, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 /* 32-bit relocation to the symbol's procedure linkage table. */
672 HOWTO (R_PPC64_PLT32
, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE
, /* pc_relative */
678 complain_overflow_bitfield
, /* complain_on_overflow */
679 ppc64_elf_unhandled_reloc
, /* special_function */
680 "R_PPC64_PLT32", /* name */
681 FALSE
, /* partial_inplace */
683 0xffffffff, /* dst_mask */
684 FALSE
), /* pcrel_offset */
686 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
687 FIXME: R_PPC64_PLTREL32 not supported. */
688 HOWTO (R_PPC64_PLTREL32
, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 TRUE
, /* pc_relative */
694 complain_overflow_signed
, /* complain_on_overflow */
695 ppc64_elf_unhandled_reloc
, /* special_function */
696 "R_PPC64_PLTREL32", /* name */
697 FALSE
, /* partial_inplace */
699 0xffffffff, /* dst_mask */
700 TRUE
), /* pcrel_offset */
702 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
704 HOWTO (R_PPC64_PLT16_LO
, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE
, /* pc_relative */
710 complain_overflow_dont
, /* complain_on_overflow */
711 ppc64_elf_unhandled_reloc
, /* special_function */
712 "R_PPC64_PLT16_LO", /* name */
713 FALSE
, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE
), /* pcrel_offset */
718 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
720 HOWTO (R_PPC64_PLT16_HI
, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE
, /* pc_relative */
726 complain_overflow_signed
, /* complain_on_overflow */
727 ppc64_elf_unhandled_reloc
, /* special_function */
728 "R_PPC64_PLT16_HI", /* name */
729 FALSE
, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE
), /* pcrel_offset */
734 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
736 HOWTO (R_PPC64_PLT16_HA
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_signed
, /* complain_on_overflow */
743 ppc64_elf_unhandled_reloc
, /* special_function */
744 "R_PPC64_PLT16_HA", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* 16-bit section relative relocation. */
751 HOWTO (R_PPC64_SECTOFF
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_signed
, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc
, /* special_function */
759 "R_PPC64_SECTOFF", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* Like R_PPC64_SECTOFF, but no overflow warning. */
766 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_dont
, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc
, /* special_function */
774 "R_PPC64_SECTOFF_LO", /* name */
775 FALSE
, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE
), /* pcrel_offset */
780 /* 16-bit upper half section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HI
, /* 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_reloc
, /* special_function */
789 "R_PPC64_SECTOFF_HI", /* name */
790 FALSE
, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE
), /* pcrel_offset */
795 /* 16-bit upper half adjusted section relative relocation. */
796 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE
, /* pc_relative */
802 complain_overflow_signed
, /* complain_on_overflow */
803 ppc64_elf_sectoff_ha_reloc
, /* special_function */
804 "R_PPC64_SECTOFF_HA", /* name */
805 FALSE
, /* partial_inplace */
807 0xffff, /* dst_mask */
808 FALSE
), /* pcrel_offset */
810 /* Like R_PPC64_REL24 without touching the two least significant bits. */
811 HOWTO (R_PPC64_REL30
, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_dont
, /* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_PPC64_REL30", /* name */
820 FALSE
, /* partial_inplace */
822 0xfffffffc, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
827 /* A standard 64-bit relocation. */
828 HOWTO (R_PPC64_ADDR64
, /* type */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
832 FALSE
, /* pc_relative */
834 complain_overflow_dont
, /* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_PPC64_ADDR64", /* name */
837 FALSE
, /* partial_inplace */
839 ONES (64), /* dst_mask */
840 FALSE
), /* pcrel_offset */
842 /* The bits 32-47 of an address. */
843 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE
, /* pc_relative */
849 complain_overflow_dont
, /* complain_on_overflow */
850 bfd_elf_generic_reloc
, /* special_function */
851 "R_PPC64_ADDR16_HIGHER", /* name */
852 FALSE
, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE
), /* pcrel_offset */
857 /* The bits 32-47 of an address, plus 1 if the contents of the low
858 16 bits, treated as a signed number, is negative. */
859 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE
, /* pc_relative */
865 complain_overflow_dont
, /* complain_on_overflow */
866 ppc64_elf_ha_reloc
, /* special_function */
867 "R_PPC64_ADDR16_HIGHERA", /* name */
868 FALSE
, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE
), /* pcrel_offset */
873 /* The bits 48-63 of an address. */
874 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE
, /* pc_relative */
880 complain_overflow_dont
, /* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_PPC64_ADDR16_HIGHEST", /* name */
883 FALSE
, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE
), /* pcrel_offset */
888 /* The bits 48-63 of an address, plus 1 if the contents of the low
889 16 bits, treated as a signed number, is negative. */
890 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 ppc64_elf_ha_reloc
, /* special_function */
898 "R_PPC64_ADDR16_HIGHESTA", /* name */
899 FALSE
, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* Like ADDR64, but may be unaligned. */
905 HOWTO (R_PPC64_UADDR64
, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 FALSE
, /* pc_relative */
911 complain_overflow_dont
, /* complain_on_overflow */
912 bfd_elf_generic_reloc
, /* special_function */
913 "R_PPC64_UADDR64", /* name */
914 FALSE
, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 FALSE
), /* pcrel_offset */
919 /* 64-bit relative relocation. */
920 HOWTO (R_PPC64_REL64
, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 TRUE
, /* pc_relative */
926 complain_overflow_dont
, /* complain_on_overflow */
927 bfd_elf_generic_reloc
, /* special_function */
928 "R_PPC64_REL64", /* name */
929 FALSE
, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 TRUE
), /* pcrel_offset */
934 /* 64-bit relocation to the symbol's procedure linkage table. */
935 HOWTO (R_PPC64_PLT64
, /* type */
937 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 ppc64_elf_unhandled_reloc
, /* special_function */
943 "R_PPC64_PLT64", /* name */
944 FALSE
, /* partial_inplace */
946 ONES (64), /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* 64-bit PC relative relocation to the symbol's procedure linkage
951 /* FIXME: R_PPC64_PLTREL64 not supported. */
952 HOWTO (R_PPC64_PLTREL64
, /* type */
954 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
956 TRUE
, /* pc_relative */
958 complain_overflow_dont
, /* complain_on_overflow */
959 ppc64_elf_unhandled_reloc
, /* special_function */
960 "R_PPC64_PLTREL64", /* name */
961 FALSE
, /* partial_inplace */
963 ONES (64), /* dst_mask */
964 TRUE
), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation. */
968 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
969 HOWTO (R_PPC64_TOC16
, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE
, /* pc_relative */
975 complain_overflow_signed
, /* complain_on_overflow */
976 ppc64_elf_toc_reloc
, /* special_function */
977 "R_PPC64_TOC16", /* name */
978 FALSE
, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE
), /* pcrel_offset */
983 /* 16 bit TOC-relative relocation without overflow. */
985 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
986 HOWTO (R_PPC64_TOC16_LO
, /* type */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE
, /* pc_relative */
992 complain_overflow_dont
, /* complain_on_overflow */
993 ppc64_elf_toc_reloc
, /* special_function */
994 "R_PPC64_TOC16_LO", /* name */
995 FALSE
, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE
), /* pcrel_offset */
1000 /* 16 bit TOC-relative relocation, high 16 bits. */
1002 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1003 HOWTO (R_PPC64_TOC16_HI
, /* type */
1004 16, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE
, /* pc_relative */
1009 complain_overflow_signed
, /* complain_on_overflow */
1010 ppc64_elf_toc_reloc
, /* special_function */
1011 "R_PPC64_TOC16_HI", /* name */
1012 FALSE
, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE
), /* pcrel_offset */
1017 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1018 contents of the low 16 bits, treated as a signed number, is
1021 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1022 HOWTO (R_PPC64_TOC16_HA
, /* type */
1023 16, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 FALSE
, /* pc_relative */
1028 complain_overflow_signed
, /* complain_on_overflow */
1029 ppc64_elf_toc_ha_reloc
, /* special_function */
1030 "R_PPC64_TOC16_HA", /* name */
1031 FALSE
, /* partial_inplace */
1033 0xffff, /* dst_mask */
1034 FALSE
), /* pcrel_offset */
1036 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1038 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1039 HOWTO (R_PPC64_TOC
, /* type */
1041 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1043 FALSE
, /* pc_relative */
1045 complain_overflow_dont
, /* complain_on_overflow */
1046 ppc64_elf_toc64_reloc
, /* special_function */
1047 "R_PPC64_TOC", /* name */
1048 FALSE
, /* partial_inplace */
1050 ONES (64), /* dst_mask */
1051 FALSE
), /* pcrel_offset */
1053 /* Like R_PPC64_GOT16, but also informs the link editor that the
1054 value to relocate may (!) refer to a PLT entry which the link
1055 editor (a) may replace with the symbol value. If the link editor
1056 is unable to fully resolve the symbol, it may (b) create a PLT
1057 entry and store the address to the new PLT entry in the GOT.
1058 This permits lazy resolution of function symbols at run time.
1059 The link editor may also skip all of this and just (c) emit a
1060 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1061 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1062 HOWTO (R_PPC64_PLTGOT16
, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE
, /* pc_relative */
1068 complain_overflow_signed
, /* complain_on_overflow */
1069 ppc64_elf_unhandled_reloc
, /* special_function */
1070 "R_PPC64_PLTGOT16", /* name */
1071 FALSE
, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE
), /* pcrel_offset */
1076 /* Like R_PPC64_PLTGOT16, but without overflow. */
1077 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1078 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE
, /* pc_relative */
1084 complain_overflow_dont
, /* complain_on_overflow */
1085 ppc64_elf_unhandled_reloc
, /* special_function */
1086 "R_PPC64_PLTGOT16_LO", /* name */
1087 FALSE
, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE
), /* pcrel_offset */
1092 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1093 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1094 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE
, /* pc_relative */
1100 complain_overflow_signed
, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc
, /* special_function */
1102 "R_PPC64_PLTGOT16_HI", /* name */
1103 FALSE
, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE
), /* pcrel_offset */
1108 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1109 1 if the contents of the low 16 bits, treated as a signed number,
1111 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1112 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1113 16, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_signed
, /* complain_on_overflow */
1119 ppc64_elf_unhandled_reloc
, /* special_function */
1120 "R_PPC64_PLTGOT16_HA", /* name */
1121 FALSE
, /* partial_inplace */
1123 0xffff, /* dst_mask */
1124 FALSE
), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_signed
, /* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_PPC64_ADDR16_DS", /* name */
1136 FALSE
, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE
, /* pc_relative */
1148 complain_overflow_dont
,/* complain_on_overflow */
1149 bfd_elf_generic_reloc
, /* special_function */
1150 "R_PPC64_ADDR16_LO_DS",/* name */
1151 FALSE
, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE
), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_DS
, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE
, /* pc_relative */
1163 complain_overflow_signed
, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc
, /* special_function */
1165 "R_PPC64_GOT16_DS", /* name */
1166 FALSE
, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE
), /* pcrel_offset */
1171 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_GOT16_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_GOT16_LO_DS", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE
, /* pc_relative */
1193 complain_overflow_dont
, /* complain_on_overflow */
1194 ppc64_elf_unhandled_reloc
, /* special_function */
1195 "R_PPC64_PLT16_LO_DS", /* name */
1196 FALSE
, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE
), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_signed
, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc
, /* special_function */
1210 "R_PPC64_SECTOFF_DS", /* name */
1211 FALSE
, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE
, /* pc_relative */
1223 complain_overflow_dont
, /* complain_on_overflow */
1224 ppc64_elf_sectoff_reloc
, /* special_function */
1225 "R_PPC64_SECTOFF_LO_DS",/* name */
1226 FALSE
, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE
), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_DS
, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE
, /* pc_relative */
1238 complain_overflow_signed
, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc
, /* special_function */
1240 "R_PPC64_TOC16_DS", /* name */
1241 FALSE
, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE
), /* pcrel_offset */
1246 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1247 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1249 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE
, /* pc_relative */
1253 complain_overflow_dont
, /* complain_on_overflow */
1254 ppc64_elf_toc_reloc
, /* special_function */
1255 "R_PPC64_TOC16_LO_DS", /* name */
1256 FALSE
, /* partial_inplace */
1258 0xfffc, /* dst_mask */
1259 FALSE
), /* pcrel_offset */
1261 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1262 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1263 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE
, /* pc_relative */
1269 complain_overflow_signed
, /* complain_on_overflow */
1270 ppc64_elf_unhandled_reloc
, /* special_function */
1271 "R_PPC64_PLTGOT16_DS", /* name */
1272 FALSE
, /* partial_inplace */
1274 0xfffc, /* dst_mask */
1275 FALSE
), /* pcrel_offset */
1277 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1278 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1279 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc
, /* special_function */
1287 "R_PPC64_PLTGOT16_LO_DS",/* name */
1288 FALSE
, /* partial_inplace */
1290 0xfffc, /* dst_mask */
1291 FALSE
), /* pcrel_offset */
1293 /* Marker relocs for TLS. */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
, /* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_PPC64_TLS", /* name */
1303 FALSE
, /* partial_inplace */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_PPC64_TLSGD
,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
, /* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_PPC64_TLSGD", /* name */
1317 FALSE
, /* partial_inplace */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_PPC64_TLSLD
,
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_dont
, /* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_PPC64_TLSLD", /* name */
1331 FALSE
, /* partial_inplace */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_PPC64_TOCSAVE
,
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
, /* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_PPC64_TOCSAVE", /* name */
1345 FALSE
, /* partial_inplace */
1348 FALSE
), /* pcrel_offset */
1350 /* Computes the load module index of the load module that contains the
1351 definition of its TLS sym. */
1352 HOWTO (R_PPC64_DTPMOD64
,
1354 4, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_dont
, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc
, /* special_function */
1360 "R_PPC64_DTPMOD64", /* name */
1361 FALSE
, /* partial_inplace */
1363 ONES (64), /* dst_mask */
1364 FALSE
), /* pcrel_offset */
1366 /* Computes a dtv-relative displacement, the difference between the value
1367 of sym+add and the base address of the thread-local storage block that
1368 contains the definition of sym, minus 0x8000. */
1369 HOWTO (R_PPC64_DTPREL64
,
1371 4, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC64_DTPREL64", /* name */
1378 FALSE
, /* partial_inplace */
1380 ONES (64), /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* A 16 bit dtprel reloc. */
1384 HOWTO (R_PPC64_DTPREL16
,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_signed
, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc
, /* special_function */
1392 "R_PPC64_DTPREL16", /* name */
1393 FALSE
, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 /* Like DTPREL16, but no overflow. */
1399 HOWTO (R_PPC64_DTPREL16_LO
,
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE
, /* pc_relative */
1405 complain_overflow_dont
, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc
, /* special_function */
1407 "R_PPC64_DTPREL16_LO", /* name */
1408 FALSE
, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE
), /* pcrel_offset */
1413 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HI
,
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_HI", /* name */
1423 FALSE
, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE
), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HA
,
1430 16, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_signed
, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc
, /* special_function */
1437 "R_PPC64_DTPREL16_HA", /* name */
1438 FALSE
, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHER
,
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_HIGHER", /* name */
1453 FALSE
, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE
), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1460 32, /* 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_HIGHERA", /* name */
1468 FALSE
, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
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_HIGHEST", /* name */
1483 FALSE
, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE
), /* pcrel_offset */
1488 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1489 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1490 48, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_dont
, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc
, /* special_function */
1497 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1498 FALSE
, /* partial_inplace */
1500 0xffff, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 /* Like DTPREL16, but for insns with a DS field. */
1504 HOWTO (R_PPC64_DTPREL16_DS
,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_signed
, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc
, /* special_function */
1512 "R_PPC64_DTPREL16_DS", /* name */
1513 FALSE
, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 /* Like DTPREL16_DS, but no overflow. */
1519 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1521 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE
, /* pc_relative */
1525 complain_overflow_dont
, /* complain_on_overflow */
1526 ppc64_elf_unhandled_reloc
, /* special_function */
1527 "R_PPC64_DTPREL16_LO_DS", /* name */
1528 FALSE
, /* partial_inplace */
1530 0xfffc, /* dst_mask */
1531 FALSE
), /* pcrel_offset */
1533 /* Computes a tp-relative displacement, the difference between the value of
1534 sym+add and the value of the thread pointer (r13). */
1535 HOWTO (R_PPC64_TPREL64
,
1537 4, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE
, /* pc_relative */
1541 complain_overflow_dont
, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc
, /* special_function */
1543 "R_PPC64_TPREL64", /* name */
1544 FALSE
, /* partial_inplace */
1546 ONES (64), /* dst_mask */
1547 FALSE
), /* pcrel_offset */
1549 /* A 16 bit tprel reloc. */
1550 HOWTO (R_PPC64_TPREL16
,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_signed
, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc
, /* special_function */
1558 "R_PPC64_TPREL16", /* name */
1559 FALSE
, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE
), /* pcrel_offset */
1564 /* Like TPREL16, but no overflow. */
1565 HOWTO (R_PPC64_TPREL16_LO
,
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_dont
, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc
, /* special_function */
1573 "R_PPC64_TPREL16_LO", /* name */
1574 FALSE
, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE
), /* pcrel_offset */
1579 /* Like TPREL16_LO, but next higher group of 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HI
,
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_HI", /* name */
1589 FALSE
, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE
), /* pcrel_offset */
1594 /* Like TPREL16_HI, but adjust for low 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HA
,
1596 16, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_signed
, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc
, /* special_function */
1603 "R_PPC64_TPREL16_HA", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1609 /* Like TPREL16_HI, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHER
,
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_HIGHER", /* name */
1619 FALSE
, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1626 32, /* 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_HIGHERA", /* name */
1634 FALSE
, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHEST
,
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_HIGHEST", /* name */
1649 FALSE
, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE
), /* pcrel_offset */
1654 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1655 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1656 48, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_dont
, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc
, /* special_function */
1663 "R_PPC64_TPREL16_HIGHESTA", /* name */
1664 FALSE
, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* Like TPREL16, but for insns with a DS field. */
1670 HOWTO (R_PPC64_TPREL16_DS
,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_signed
, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc
, /* special_function */
1678 "R_PPC64_TPREL16_DS", /* name */
1679 FALSE
, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Like TPREL16_DS, but no overflow. */
1685 HOWTO (R_PPC64_TPREL16_LO_DS
,
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE
, /* pc_relative */
1691 complain_overflow_dont
, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc
, /* special_function */
1693 "R_PPC64_TPREL16_LO_DS", /* name */
1694 FALSE
, /* partial_inplace */
1696 0xfffc, /* dst_mask */
1697 FALSE
), /* pcrel_offset */
1699 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1700 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1701 to the first entry relative to the TOC base (r2). */
1702 HOWTO (R_PPC64_GOT_TLSGD16
,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE
, /* pc_relative */
1708 complain_overflow_signed
, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc
, /* special_function */
1710 "R_PPC64_GOT_TLSGD16", /* name */
1711 FALSE
, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE
), /* pcrel_offset */
1716 /* Like GOT_TLSGD16, but no overflow. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE
, /* pc_relative */
1723 complain_overflow_dont
, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc
, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_LO", /* name */
1726 FALSE
, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE
), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
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_HI", /* name */
1741 FALSE
, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE
), /* pcrel_offset */
1746 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1747 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE
, /* pc_relative */
1753 complain_overflow_signed
, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc
, /* special_function */
1755 "R_PPC64_GOT_TLSGD16_HA", /* name */
1756 FALSE
, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE
), /* pcrel_offset */
1761 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1762 with values (sym+add)@dtpmod and zero, and computes the offset to the
1763 first entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TLSLD16
,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_signed
, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc
, /* special_function */
1772 "R_PPC64_GOT_TLSLD16", /* name */
1773 FALSE
, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 /* Like GOT_TLSLD16, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_dont
, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_LO", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
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_HI", /* name */
1803 FALSE
, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE
), /* pcrel_offset */
1808 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE
, /* pc_relative */
1815 complain_overflow_signed
, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc
, /* special_function */
1817 "R_PPC64_GOT_TLSLD16_HA", /* name */
1818 FALSE
, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE
), /* pcrel_offset */
1823 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1824 the offset to the entry relative to the TOC base (r2). */
1825 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE
, /* pc_relative */
1831 complain_overflow_signed
, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc
, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_DS", /* name */
1834 FALSE
, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE
), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_DS, but no overflow. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE
, /* pc_relative */
1846 complain_overflow_dont
, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc
, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1849 FALSE
, /* partial_inplace */
1851 0xfffc, /* dst_mask */
1852 FALSE
), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
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_HI", /* name */
1864 FALSE
, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE
), /* pcrel_offset */
1869 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1870 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1871 16, /* rightshift */
1872 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE
, /* pc_relative */
1876 complain_overflow_signed
, /* complain_on_overflow */
1877 ppc64_elf_unhandled_reloc
, /* special_function */
1878 "R_PPC64_GOT_DTPREL16_HA", /* name */
1879 FALSE
, /* partial_inplace */
1881 0xffff, /* dst_mask */
1882 FALSE
), /* pcrel_offset */
1884 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1885 offset to the entry relative to the TOC base (r2). */
1886 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE
, /* pc_relative */
1892 complain_overflow_signed
, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc
, /* special_function */
1894 "R_PPC64_GOT_TPREL16_DS", /* name */
1895 FALSE
, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE
), /* pcrel_offset */
1900 /* Like GOT_TPREL16_DS, but no overflow. */
1901 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE
, /* pc_relative */
1907 complain_overflow_dont
, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc
, /* special_function */
1909 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1910 FALSE
, /* partial_inplace */
1912 0xfffc, /* dst_mask */
1913 FALSE
), /* pcrel_offset */
1915 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HI
,
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_HI", /* name */
1925 FALSE
, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE
), /* pcrel_offset */
1930 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1931 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1932 16, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE
, /* pc_relative */
1937 complain_overflow_signed
, /* complain_on_overflow */
1938 ppc64_elf_unhandled_reloc
, /* special_function */
1939 "R_PPC64_GOT_TPREL16_HA", /* name */
1940 FALSE
, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 FALSE
), /* pcrel_offset */
1945 HOWTO (R_PPC64_JMP_IREL
, /* type */
1947 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 FALSE
, /* pc_relative */
1951 complain_overflow_dont
, /* complain_on_overflow */
1952 ppc64_elf_unhandled_reloc
, /* special_function */
1953 "R_PPC64_JMP_IREL", /* name */
1954 FALSE
, /* partial_inplace */
1957 FALSE
), /* pcrel_offset */
1959 HOWTO (R_PPC64_IRELATIVE
, /* type */
1961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1963 FALSE
, /* pc_relative */
1965 complain_overflow_dont
, /* complain_on_overflow */
1966 bfd_elf_generic_reloc
, /* special_function */
1967 "R_PPC64_IRELATIVE", /* name */
1968 FALSE
, /* partial_inplace */
1970 ONES (64), /* dst_mask */
1971 FALSE
), /* pcrel_offset */
1973 /* A 16 bit relative relocation. */
1974 HOWTO (R_PPC64_REL16
, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE
, /* pc_relative */
1980 complain_overflow_signed
, /* complain_on_overflow */
1981 bfd_elf_generic_reloc
, /* special_function */
1982 "R_PPC64_REL16", /* name */
1983 FALSE
, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE
), /* pcrel_offset */
1988 /* A 16 bit relative relocation without overflow. */
1989 HOWTO (R_PPC64_REL16_LO
, /* type */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE
, /* pc_relative */
1995 complain_overflow_dont
,/* complain_on_overflow */
1996 bfd_elf_generic_reloc
, /* special_function */
1997 "R_PPC64_REL16_LO", /* name */
1998 FALSE
, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE
), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address. */
2004 HOWTO (R_PPC64_REL16_HI
, /* type */
2005 16, /* rightshift */
2006 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 TRUE
, /* pc_relative */
2010 complain_overflow_signed
, /* complain_on_overflow */
2011 bfd_elf_generic_reloc
, /* special_function */
2012 "R_PPC64_REL16_HI", /* name */
2013 FALSE
, /* partial_inplace */
2015 0xffff, /* dst_mask */
2016 TRUE
), /* pcrel_offset */
2018 /* The high order 16 bits of a relative address, plus 1 if the contents of
2019 the low 16 bits, treated as a signed number, is negative. */
2020 HOWTO (R_PPC64_REL16_HA
, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 TRUE
, /* pc_relative */
2026 complain_overflow_signed
, /* complain_on_overflow */
2027 ppc64_elf_ha_reloc
, /* special_function */
2028 "R_PPC64_REL16_HA", /* name */
2029 FALSE
, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 TRUE
), /* pcrel_offset */
2034 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2035 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2036 16, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2039 TRUE
, /* pc_relative */
2041 complain_overflow_signed
, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc
, /* special_function */
2043 "R_PPC64_REL16DX_HA", /* name */
2044 FALSE
, /* partial_inplace */
2046 0x1fffc1, /* dst_mask */
2047 TRUE
), /* pcrel_offset */
2049 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2050 HOWTO (R_PPC64_16DX_HA
, /* type */
2051 16, /* rightshift */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE
, /* pc_relative */
2056 complain_overflow_signed
, /* complain_on_overflow */
2057 ppc64_elf_ha_reloc
, /* special_function */
2058 "R_PPC64_16DX_HA", /* name */
2059 FALSE
, /* partial_inplace */
2061 0x1fffc1, /* dst_mask */
2062 FALSE
), /* pcrel_offset */
2064 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2065 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE
, /* pc_relative */
2071 complain_overflow_dont
, /* complain_on_overflow */
2072 bfd_elf_generic_reloc
, /* special_function */
2073 "R_PPC64_ADDR16_HIGH", /* name */
2074 FALSE
, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE
), /* pcrel_offset */
2079 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2080 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
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_ha_reloc
, /* special_function */
2088 "R_PPC64_ADDR16_HIGHA", /* name */
2089 FALSE
, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE
), /* pcrel_offset */
2094 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2095 HOWTO (R_PPC64_DTPREL16_HIGH
,
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_DTPREL16_HIGH", /* name */
2104 FALSE
, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE
), /* pcrel_offset */
2109 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2110 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2111 16, /* rightshift */
2112 1, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE
, /* pc_relative */
2116 complain_overflow_dont
, /* complain_on_overflow */
2117 ppc64_elf_unhandled_reloc
, /* special_function */
2118 "R_PPC64_DTPREL16_HIGHA", /* name */
2119 FALSE
, /* partial_inplace */
2121 0xffff, /* dst_mask */
2122 FALSE
), /* pcrel_offset */
2124 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2125 HOWTO (R_PPC64_TPREL16_HIGH
,
2126 16, /* rightshift */
2127 1, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE
, /* pc_relative */
2131 complain_overflow_dont
, /* complain_on_overflow */
2132 ppc64_elf_unhandled_reloc
, /* special_function */
2133 "R_PPC64_TPREL16_HIGH", /* name */
2134 FALSE
, /* partial_inplace */
2136 0xffff, /* dst_mask */
2137 FALSE
), /* pcrel_offset */
2139 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2140 HOWTO (R_PPC64_TPREL16_HIGHA
,
2141 16, /* rightshift */
2142 1, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE
, /* pc_relative */
2146 complain_overflow_dont
, /* complain_on_overflow */
2147 ppc64_elf_unhandled_reloc
, /* special_function */
2148 "R_PPC64_TPREL16_HIGHA", /* name */
2149 FALSE
, /* partial_inplace */
2151 0xffff, /* dst_mask */
2152 FALSE
), /* pcrel_offset */
2154 /* Marker reloc on ELFv2 large-model function entry. */
2155 HOWTO (R_PPC64_ENTRY
,
2157 2, /* size (0 = byte, 1 = short, 2 = long) */
2159 FALSE
, /* pc_relative */
2161 complain_overflow_dont
, /* complain_on_overflow */
2162 bfd_elf_generic_reloc
, /* special_function */
2163 "R_PPC64_ENTRY", /* name */
2164 FALSE
, /* partial_inplace */
2167 FALSE
), /* pcrel_offset */
2169 /* Like ADDR64, but use local entry point of function. */
2170 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2172 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2174 FALSE
, /* pc_relative */
2176 complain_overflow_dont
, /* complain_on_overflow */
2177 bfd_elf_generic_reloc
, /* special_function */
2178 "R_PPC64_ADDR64_LOCAL", /* name */
2179 FALSE
, /* partial_inplace */
2181 ONES (64), /* dst_mask */
2182 FALSE
), /* pcrel_offset */
2184 /* GNU extension to record C++ vtable hierarchy. */
2185 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2187 0, /* size (0 = byte, 1 = short, 2 = long) */
2189 FALSE
, /* pc_relative */
2191 complain_overflow_dont
, /* complain_on_overflow */
2192 NULL
, /* special_function */
2193 "R_PPC64_GNU_VTINHERIT", /* name */
2194 FALSE
, /* partial_inplace */
2197 FALSE
), /* pcrel_offset */
2199 /* GNU extension to record C++ vtable member usage. */
2200 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2202 0, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE
, /* pc_relative */
2206 complain_overflow_dont
, /* complain_on_overflow */
2207 NULL
, /* special_function */
2208 "R_PPC64_GNU_VTENTRY", /* name */
2209 FALSE
, /* partial_inplace */
2212 FALSE
), /* pcrel_offset */
2216 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2220 ppc_howto_init (void)
2222 unsigned int i
, type
;
2224 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2226 type
= ppc64_elf_howto_raw
[i
].type
;
2227 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2228 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2232 static reloc_howto_type
*
2233 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2234 bfd_reloc_code_real_type code
)
2236 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2238 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2239 /* Initialize howto table if needed. */
2247 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2249 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2251 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2253 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2255 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2257 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2259 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2261 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2263 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2265 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2267 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2269 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2271 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2273 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2275 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2277 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2279 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2281 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2283 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2285 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2287 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2289 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2291 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2293 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2295 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2297 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2299 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2301 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2303 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2305 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2307 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2309 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2311 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2313 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2315 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2317 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2319 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2321 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2323 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2325 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2327 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2329 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2331 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2333 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2335 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2337 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2339 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2341 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2343 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2345 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2347 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2349 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2351 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2353 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2355 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2357 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2359 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2361 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2363 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2365 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2367 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2369 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2371 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2373 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2375 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2377 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2379 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2381 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2383 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2385 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2387 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2389 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2391 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2393 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2395 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2397 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2399 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2401 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2403 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2405 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2407 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2409 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2411 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2413 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2415 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2417 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2419 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2421 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2423 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2425 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2427 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2429 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2431 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2433 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2435 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2437 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2439 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2441 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2443 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2445 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2447 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2449 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2451 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2453 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2455 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2457 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2459 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2461 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2463 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2465 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2467 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2469 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC64_16DX_HA
;
2471 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2473 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2475 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2477 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2479 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2483 return ppc64_elf_howto_table
[r
];
2486 static reloc_howto_type
*
2487 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2492 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2493 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2494 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2495 return &ppc64_elf_howto_raw
[i
];
2500 /* Set the howto pointer for a PowerPC ELF reloc. */
2503 ppc64_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
2504 Elf_Internal_Rela
*dst
)
2508 /* Initialize howto table if needed. */
2509 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2512 type
= ELF64_R_TYPE (dst
->r_info
);
2513 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2515 /* xgettext:c-format */
2516 _bfd_error_handler (_("%B: invalid relocation type %d"),
2518 type
= R_PPC64_NONE
;
2520 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2523 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2525 static bfd_reloc_status_type
2526 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2527 void *data
, asection
*input_section
,
2528 bfd
*output_bfd
, char **error_message
)
2530 enum elf_ppc64_reloc_type r_type
;
2532 bfd_size_type octets
;
2535 /* If this is a relocatable link (output_bfd test tells us), just
2536 call the generic function. Any adjustment will be done at final
2538 if (output_bfd
!= NULL
)
2539 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2540 input_section
, output_bfd
, error_message
);
2542 /* Adjust the addend for sign extension of the low 16 bits.
2543 We won't actually be using the low 16 bits, so trashing them
2545 reloc_entry
->addend
+= 0x8000;
2546 r_type
= reloc_entry
->howto
->type
;
2547 if (r_type
!= R_PPC64_REL16DX_HA
)
2548 return bfd_reloc_continue
;
2551 if (!bfd_is_com_section (symbol
->section
))
2552 value
= symbol
->value
;
2553 value
+= (reloc_entry
->addend
2554 + symbol
->section
->output_offset
2555 + symbol
->section
->output_section
->vma
);
2556 value
-= (reloc_entry
->address
2557 + input_section
->output_offset
2558 + input_section
->output_section
->vma
);
2559 value
= (bfd_signed_vma
) value
>> 16;
2561 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2562 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2564 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2565 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2566 if (value
+ 0x8000 > 0xffff)
2567 return bfd_reloc_overflow
;
2568 return bfd_reloc_ok
;
2571 static bfd_reloc_status_type
2572 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2573 void *data
, asection
*input_section
,
2574 bfd
*output_bfd
, char **error_message
)
2576 if (output_bfd
!= NULL
)
2577 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2578 input_section
, output_bfd
, error_message
);
2580 if (strcmp (symbol
->section
->name
, ".opd") == 0
2581 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2583 bfd_vma dest
= opd_entry_value (symbol
->section
,
2584 symbol
->value
+ reloc_entry
->addend
,
2586 if (dest
!= (bfd_vma
) -1)
2587 reloc_entry
->addend
= dest
- (symbol
->value
2588 + symbol
->section
->output_section
->vma
2589 + symbol
->section
->output_offset
);
2593 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2595 if (symbol
->section
->owner
!= abfd
2596 && symbol
->section
->owner
!= NULL
2597 && abiversion (symbol
->section
->owner
) >= 2)
2601 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2603 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2605 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2607 elfsym
= (elf_symbol_type
*) symdef
;
2613 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2615 return bfd_reloc_continue
;
2618 static bfd_reloc_status_type
2619 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2620 void *data
, asection
*input_section
,
2621 bfd
*output_bfd
, char **error_message
)
2624 enum elf_ppc64_reloc_type r_type
;
2625 bfd_size_type octets
;
2626 /* Assume 'at' branch hints. */
2627 bfd_boolean is_isa_v2
= TRUE
;
2629 /* If this is a relocatable link (output_bfd test tells us), just
2630 call the generic function. Any adjustment will be done at final
2632 if (output_bfd
!= NULL
)
2633 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2634 input_section
, output_bfd
, error_message
);
2636 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2637 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2638 insn
&= ~(0x01 << 21);
2639 r_type
= reloc_entry
->howto
->type
;
2640 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2641 || r_type
== R_PPC64_REL14_BRTAKEN
)
2642 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2646 /* Set 'a' bit. This is 0b00010 in BO field for branch
2647 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2648 for branch on CTR insns (BO == 1a00t or 1a01t). */
2649 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2651 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2661 if (!bfd_is_com_section (symbol
->section
))
2662 target
= symbol
->value
;
2663 target
+= symbol
->section
->output_section
->vma
;
2664 target
+= symbol
->section
->output_offset
;
2665 target
+= reloc_entry
->addend
;
2667 from
= (reloc_entry
->address
2668 + input_section
->output_offset
2669 + input_section
->output_section
->vma
);
2671 /* Invert 'y' bit if not the default. */
2672 if ((bfd_signed_vma
) (target
- from
) < 0)
2675 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2677 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2678 input_section
, output_bfd
, error_message
);
2681 static bfd_reloc_status_type
2682 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2683 void *data
, asection
*input_section
,
2684 bfd
*output_bfd
, char **error_message
)
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 /* Subtract the symbol section base address. */
2694 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2695 return bfd_reloc_continue
;
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2700 void *data
, asection
*input_section
,
2701 bfd
*output_bfd
, char **error_message
)
2703 /* If this is a relocatable link (output_bfd test tells us), just
2704 call the generic function. Any adjustment will be done at final
2706 if (output_bfd
!= NULL
)
2707 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2708 input_section
, output_bfd
, error_message
);
2710 /* Subtract the symbol section base address. */
2711 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2713 /* Adjust the addend for sign extension of the low 16 bits. */
2714 reloc_entry
->addend
+= 0x8000;
2715 return bfd_reloc_continue
;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2720 void *data
, asection
*input_section
,
2721 bfd
*output_bfd
, char **error_message
)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd
!= NULL
)
2729 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2730 input_section
, output_bfd
, error_message
);
2732 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2734 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2736 /* Subtract the TOC base address. */
2737 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2738 return bfd_reloc_continue
;
2741 static bfd_reloc_status_type
2742 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2743 void *data
, asection
*input_section
,
2744 bfd
*output_bfd
, char **error_message
)
2748 /* If this is a relocatable link (output_bfd test tells us), just
2749 call the generic function. Any adjustment will be done at final
2751 if (output_bfd
!= NULL
)
2752 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2753 input_section
, output_bfd
, error_message
);
2755 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2757 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2759 /* Subtract the TOC base address. */
2760 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry
->addend
+= 0x8000;
2764 return bfd_reloc_continue
;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2769 void *data
, asection
*input_section
,
2770 bfd
*output_bfd
, char **error_message
)
2773 bfd_size_type octets
;
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd
!= NULL
)
2779 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2780 input_section
, output_bfd
, error_message
);
2782 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2784 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2786 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2787 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2788 return bfd_reloc_ok
;
2791 static bfd_reloc_status_type
2792 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2793 void *data
, asection
*input_section
,
2794 bfd
*output_bfd
, char **error_message
)
2796 /* If this is a relocatable link (output_bfd test tells us), just
2797 call the generic function. Any adjustment will be done at final
2799 if (output_bfd
!= NULL
)
2800 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2801 input_section
, output_bfd
, error_message
);
2803 if (error_message
!= NULL
)
2805 static char buf
[60];
2806 sprintf (buf
, "generic linker can't handle %s",
2807 reloc_entry
->howto
->name
);
2808 *error_message
= buf
;
2810 return bfd_reloc_dangerous
;
2813 /* Track GOT entries needed for a given symbol. We might need more
2814 than one got entry per symbol. */
2817 struct got_entry
*next
;
2819 /* The symbol addend that we'll be placing in the GOT. */
2822 /* Unlike other ELF targets, we use separate GOT entries for the same
2823 symbol referenced from different input files. This is to support
2824 automatic multiple TOC/GOT sections, where the TOC base can vary
2825 from one input file to another. After partitioning into TOC groups
2826 we merge entries within the group.
2828 Point to the BFD owning this GOT entry. */
2831 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2832 TLS_TPREL or TLS_DTPREL for tls entries. */
2833 unsigned char tls_type
;
2835 /* Non-zero if got.ent points to real entry. */
2836 unsigned char is_indirect
;
2838 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2841 bfd_signed_vma refcount
;
2843 struct got_entry
*ent
;
2847 /* The same for PLT. */
2850 struct plt_entry
*next
;
2856 bfd_signed_vma refcount
;
2861 struct ppc64_elf_obj_tdata
2863 struct elf_obj_tdata elf
;
2865 /* Shortcuts to dynamic linker sections. */
2869 /* Used during garbage collection. We attach global symbols defined
2870 on removed .opd entries to this section so that the sym is removed. */
2871 asection
*deleted_section
;
2873 /* TLS local dynamic got entry handling. Support for multiple GOT
2874 sections means we potentially need one of these for each input bfd. */
2875 struct got_entry tlsld_got
;
2878 /* A copy of relocs before they are modified for --emit-relocs. */
2879 Elf_Internal_Rela
*relocs
;
2881 /* Section contents. */
2885 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2886 the reloc to be in the range -32768 to 32767. */
2887 unsigned int has_small_toc_reloc
: 1;
2889 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2890 instruction not one we handle. */
2891 unsigned int unexpected_toc_insn
: 1;
2894 #define ppc64_elf_tdata(bfd) \
2895 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2897 #define ppc64_tlsld_got(bfd) \
2898 (&ppc64_elf_tdata (bfd)->tlsld_got)
2900 #define is_ppc64_elf(bfd) \
2901 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2902 && elf_object_id (bfd) == PPC64_ELF_DATA)
2904 /* Override the generic function because we store some extras. */
2907 ppc64_elf_mkobject (bfd
*abfd
)
2909 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2913 /* Fix bad default arch selected for a 64 bit input bfd when the
2914 default is 32 bit. Also select arch based on apuinfo. */
2917 ppc64_elf_object_p (bfd
*abfd
)
2919 if (!abfd
->arch_info
->the_default
)
2922 if (abfd
->arch_info
->bits_per_word
== 32)
2924 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2926 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2928 /* Relies on arch after 32 bit default being 64 bit default. */
2929 abfd
->arch_info
= abfd
->arch_info
->next
;
2930 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2933 return _bfd_elf_ppc_set_arch (abfd
);
2936 /* Support for core dump NOTE sections. */
2939 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2941 size_t offset
, size
;
2943 if (note
->descsz
!= 504)
2947 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2950 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2956 /* Make a ".reg/999" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2958 size
, note
->descpos
+ offset
);
2962 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2964 if (note
->descsz
!= 136)
2967 elf_tdata (abfd
)->core
->pid
2968 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2969 elf_tdata (abfd
)->core
->program
2970 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2971 elf_tdata (abfd
)->core
->command
2972 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2978 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2991 va_start (ap
, note_type
);
2992 memset (data
, 0, sizeof (data
));
2993 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2994 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2996 return elfcore_write_note (abfd
, buf
, bufsiz
,
2997 "CORE", note_type
, data
, sizeof (data
));
3008 va_start (ap
, note_type
);
3009 memset (data
, 0, 112);
3010 pid
= va_arg (ap
, long);
3011 bfd_put_32 (abfd
, pid
, data
+ 32);
3012 cursig
= va_arg (ap
, int);
3013 bfd_put_16 (abfd
, cursig
, data
+ 12);
3014 greg
= va_arg (ap
, const void *);
3015 memcpy (data
+ 112, greg
, 384);
3016 memset (data
+ 496, 0, 8);
3018 return elfcore_write_note (abfd
, buf
, bufsiz
,
3019 "CORE", note_type
, data
, sizeof (data
));
3024 /* Add extra PPC sections. */
3026 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3028 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3029 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3030 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3031 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3032 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3033 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3034 { NULL
, 0, 0, 0, 0 }
3037 enum _ppc64_sec_type
{
3043 struct _ppc64_elf_section_data
3045 struct bfd_elf_section_data elf
;
3049 /* An array with one entry for each opd function descriptor,
3050 and some spares since opd entries may be either 16 or 24 bytes. */
3051 #define OPD_NDX(OFF) ((OFF) >> 4)
3052 struct _opd_sec_data
3054 /* Points to the function code section for local opd entries. */
3055 asection
**func_sec
;
3057 /* After editing .opd, adjust references to opd local syms. */
3061 /* An array for toc sections, indexed by offset/8. */
3062 struct _toc_sec_data
3064 /* Specifies the relocation symbol index used at a given toc offset. */
3067 /* And the relocation addend. */
3072 enum _ppc64_sec_type sec_type
:2;
3074 /* Flag set when small branches are detected. Used to
3075 select suitable defaults for the stub group size. */
3076 unsigned int has_14bit_branch
:1;
3079 #define ppc64_elf_section_data(sec) \
3080 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3083 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3085 if (!sec
->used_by_bfd
)
3087 struct _ppc64_elf_section_data
*sdata
;
3088 bfd_size_type amt
= sizeof (*sdata
);
3090 sdata
= bfd_zalloc (abfd
, amt
);
3093 sec
->used_by_bfd
= sdata
;
3096 return _bfd_elf_new_section_hook (abfd
, sec
);
3099 static struct _opd_sec_data
*
3100 get_opd_info (asection
* sec
)
3103 && ppc64_elf_section_data (sec
) != NULL
3104 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3105 return &ppc64_elf_section_data (sec
)->u
.opd
;
3109 /* Parameters for the qsort hook. */
3110 static bfd_boolean synthetic_relocatable
;
3111 static asection
*synthetic_opd
;
3113 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3116 compare_symbols (const void *ap
, const void *bp
)
3118 const asymbol
*a
= * (const asymbol
**) ap
;
3119 const asymbol
*b
= * (const asymbol
**) bp
;
3121 /* Section symbols first. */
3122 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3124 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3127 /* then .opd symbols. */
3128 if (synthetic_opd
!= NULL
)
3130 if (strcmp (a
->section
->name
, ".opd") == 0
3131 && strcmp (b
->section
->name
, ".opd") != 0)
3133 if (strcmp (a
->section
->name
, ".opd") != 0
3134 && strcmp (b
->section
->name
, ".opd") == 0)
3138 /* then other code symbols. */
3139 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3140 == (SEC_CODE
| SEC_ALLOC
)
3141 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3142 != (SEC_CODE
| SEC_ALLOC
))
3145 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3146 != (SEC_CODE
| SEC_ALLOC
)
3147 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3148 == (SEC_CODE
| SEC_ALLOC
))
3151 if (synthetic_relocatable
)
3153 if (a
->section
->id
< b
->section
->id
)
3156 if (a
->section
->id
> b
->section
->id
)
3160 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3163 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3166 /* For syms with the same value, prefer strong dynamic global function
3167 syms over other syms. */
3168 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3171 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3174 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3177 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3180 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3183 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3186 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3189 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3195 /* Search SYMS for a symbol of the given VALUE. */
3198 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3202 if (id
== (unsigned) -1)
3206 mid
= (lo
+ hi
) >> 1;
3207 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3209 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3219 mid
= (lo
+ hi
) >> 1;
3220 if (syms
[mid
]->section
->id
< id
)
3222 else if (syms
[mid
]->section
->id
> id
)
3224 else if (syms
[mid
]->value
< value
)
3226 else if (syms
[mid
]->value
> value
)
3236 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3238 bfd_vma vma
= *(bfd_vma
*) ptr
;
3239 return ((section
->flags
& SEC_ALLOC
) != 0
3240 && section
->vma
<= vma
3241 && vma
< section
->vma
+ section
->size
);
3244 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3245 entry syms. Also generate @plt symbols for the glink branch table.
3246 Returns count of synthetic symbols in RET or -1 on error. */
3249 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3250 long static_count
, asymbol
**static_syms
,
3251 long dyn_count
, asymbol
**dyn_syms
,
3258 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3259 asection
*opd
= NULL
;
3260 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3262 int abi
= abiversion (abfd
);
3268 opd
= bfd_get_section_by_name (abfd
, ".opd");
3269 if (opd
== NULL
&& abi
== 1)
3281 symcount
= static_count
;
3283 symcount
+= dyn_count
;
3287 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3291 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3293 /* Use both symbol tables. */
3294 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3295 memcpy (syms
+ static_count
, dyn_syms
,
3296 (dyn_count
+ 1) * sizeof (*syms
));
3298 else if (!relocatable
&& static_count
== 0)
3299 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3301 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3303 synthetic_relocatable
= relocatable
;
3304 synthetic_opd
= opd
;
3305 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3307 if (!relocatable
&& symcount
> 1)
3310 /* Trim duplicate syms, since we may have merged the normal and
3311 dynamic symbols. Actually, we only care about syms that have
3312 different values, so trim any with the same value. */
3313 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3314 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3315 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3316 syms
[j
++] = syms
[i
];
3321 /* Note that here and in compare_symbols we can't compare opd and
3322 sym->section directly. With separate debug info files, the
3323 symbols will be extracted from the debug file while abfd passed
3324 to this function is the real binary. */
3325 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3329 for (; i
< symcount
; ++i
)
3330 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3331 | SEC_THREAD_LOCAL
))
3332 != (SEC_CODE
| SEC_ALLOC
))
3333 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3337 for (; i
< symcount
; ++i
)
3338 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3342 for (; i
< symcount
; ++i
)
3343 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3347 for (; i
< symcount
; ++i
)
3348 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3349 != (SEC_CODE
| SEC_ALLOC
))
3357 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3362 if (opdsymend
== secsymend
)
3365 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3366 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3370 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3377 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3381 while (r
< opd
->relocation
+ relcount
3382 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3385 if (r
== opd
->relocation
+ relcount
)
3388 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3391 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3394 sym
= *r
->sym_ptr_ptr
;
3395 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3396 sym
->section
->id
, sym
->value
+ r
->addend
))
3399 size
+= sizeof (asymbol
);
3400 size
+= strlen (syms
[i
]->name
) + 2;
3406 s
= *ret
= bfd_malloc (size
);
3413 names
= (char *) (s
+ count
);
3415 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3419 while (r
< opd
->relocation
+ relcount
3420 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3423 if (r
== opd
->relocation
+ relcount
)
3426 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3429 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3432 sym
= *r
->sym_ptr_ptr
;
3433 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3434 sym
->section
->id
, sym
->value
+ r
->addend
))
3439 s
->flags
|= BSF_SYNTHETIC
;
3440 s
->section
= sym
->section
;
3441 s
->value
= sym
->value
+ r
->addend
;
3444 len
= strlen (syms
[i
]->name
);
3445 memcpy (names
, syms
[i
]->name
, len
+ 1);
3447 /* Have udata.p point back to the original symbol this
3448 synthetic symbol was derived from. */
3449 s
->udata
.p
= syms
[i
];
3456 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3457 bfd_byte
*contents
= NULL
;
3460 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3461 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3464 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3466 free_contents_and_exit_err
:
3468 free_contents_and_exit
:
3475 for (i
= secsymend
; i
< opdsymend
; ++i
)
3479 /* Ignore bogus symbols. */
3480 if (syms
[i
]->value
> opd
->size
- 8)
3483 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3484 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3487 size
+= sizeof (asymbol
);
3488 size
+= strlen (syms
[i
]->name
) + 2;
3492 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3494 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3496 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3498 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3500 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3501 goto free_contents_and_exit_err
;
3503 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3504 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3507 extdynend
= extdyn
+ dynamic
->size
;
3508 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3510 Elf_Internal_Dyn dyn
;
3511 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3513 if (dyn
.d_tag
== DT_NULL
)
3516 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3518 /* The first glink stub starts at offset 32; see
3519 comment in ppc64_elf_finish_dynamic_sections. */
3520 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3521 /* The .glink section usually does not survive the final
3522 link; search for the section (usually .text) where the
3523 glink stubs now reside. */
3524 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3535 /* Determine __glink trampoline by reading the relative branch
3536 from the first glink stub. */
3538 unsigned int off
= 0;
3540 while (bfd_get_section_contents (abfd
, glink
, buf
,
3541 glink_vma
+ off
- glink
->vma
, 4))
3543 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3545 if ((insn
& ~0x3fffffc) == 0)
3547 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3556 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3558 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3561 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3562 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3563 goto free_contents_and_exit_err
;
3565 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3566 size
+= plt_count
* sizeof (asymbol
);
3568 p
= relplt
->relocation
;
3569 for (i
= 0; i
< plt_count
; i
++, p
++)
3571 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3573 size
+= sizeof ("+0x") - 1 + 16;
3579 goto free_contents_and_exit
;
3580 s
= *ret
= bfd_malloc (size
);
3582 goto free_contents_and_exit_err
;
3584 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3586 for (i
= secsymend
; i
< opdsymend
; ++i
)
3590 if (syms
[i
]->value
> opd
->size
- 8)
3593 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3594 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3598 asection
*sec
= abfd
->sections
;
3605 long mid
= (lo
+ hi
) >> 1;
3606 if (syms
[mid
]->section
->vma
< ent
)
3608 else if (syms
[mid
]->section
->vma
> ent
)
3612 sec
= syms
[mid
]->section
;
3617 if (lo
>= hi
&& lo
> codesecsym
)
3618 sec
= syms
[lo
- 1]->section
;
3620 for (; sec
!= NULL
; sec
= sec
->next
)
3624 /* SEC_LOAD may not be set if SEC is from a separate debug
3626 if ((sec
->flags
& SEC_ALLOC
) == 0)
3628 if ((sec
->flags
& SEC_CODE
) != 0)
3631 s
->flags
|= BSF_SYNTHETIC
;
3632 s
->value
= ent
- s
->section
->vma
;
3635 len
= strlen (syms
[i
]->name
);
3636 memcpy (names
, syms
[i
]->name
, len
+ 1);
3638 /* Have udata.p point back to the original symbol this
3639 synthetic symbol was derived from. */
3640 s
->udata
.p
= syms
[i
];
3646 if (glink
!= NULL
&& relplt
!= NULL
)
3650 /* Add a symbol for the main glink trampoline. */
3651 memset (s
, 0, sizeof *s
);
3653 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3655 s
->value
= resolv_vma
- glink
->vma
;
3657 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3658 names
+= sizeof ("__glink_PLTresolve");
3663 /* FIXME: It would be very much nicer to put sym@plt on the
3664 stub rather than on the glink branch table entry. The
3665 objdump disassembler would then use a sensible symbol
3666 name on plt calls. The difficulty in doing so is
3667 a) finding the stubs, and,
3668 b) matching stubs against plt entries, and,
3669 c) there can be multiple stubs for a given plt entry.
3671 Solving (a) could be done by code scanning, but older
3672 ppc64 binaries used different stubs to current code.
3673 (b) is the tricky one since you need to known the toc
3674 pointer for at least one function that uses a pic stub to
3675 be able to calculate the plt address referenced.
3676 (c) means gdb would need to set multiple breakpoints (or
3677 find the glink branch itself) when setting breakpoints
3678 for pending shared library loads. */
3679 p
= relplt
->relocation
;
3680 for (i
= 0; i
< plt_count
; i
++, p
++)
3684 *s
= **p
->sym_ptr_ptr
;
3685 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3686 we are defining a symbol, ensure one of them is set. */
3687 if ((s
->flags
& BSF_LOCAL
) == 0)
3688 s
->flags
|= BSF_GLOBAL
;
3689 s
->flags
|= BSF_SYNTHETIC
;
3691 s
->value
= glink_vma
- glink
->vma
;
3694 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3695 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3699 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3700 names
+= sizeof ("+0x") - 1;
3701 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3702 names
+= strlen (names
);
3704 memcpy (names
, "@plt", sizeof ("@plt"));
3705 names
+= sizeof ("@plt");
3725 /* The following functions are specific to the ELF linker, while
3726 functions above are used generally. Those named ppc64_elf_* are
3727 called by the main ELF linker code. They appear in this file more
3728 or less in the order in which they are called. eg.
3729 ppc64_elf_check_relocs is called early in the link process,
3730 ppc64_elf_finish_dynamic_sections is one of the last functions
3733 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3734 functions have both a function code symbol and a function descriptor
3735 symbol. A call to foo in a relocatable object file looks like:
3742 The function definition in another object file might be:
3746 . .quad .TOC.@tocbase
3752 When the linker resolves the call during a static link, the branch
3753 unsurprisingly just goes to .foo and the .opd information is unused.
3754 If the function definition is in a shared library, things are a little
3755 different: The call goes via a plt call stub, the opd information gets
3756 copied to the plt, and the linker patches the nop.
3764 . std 2,40(1) # in practice, the call stub
3765 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3766 . addi 11,11,Lfoo@toc@l # this is the general idea
3774 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3776 The "reloc ()" notation is supposed to indicate that the linker emits
3777 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3780 What are the difficulties here? Well, firstly, the relocations
3781 examined by the linker in check_relocs are against the function code
3782 sym .foo, while the dynamic relocation in the plt is emitted against
3783 the function descriptor symbol, foo. Somewhere along the line, we need
3784 to carefully copy dynamic link information from one symbol to the other.
3785 Secondly, the generic part of the elf linker will make .foo a dynamic
3786 symbol as is normal for most other backends. We need foo dynamic
3787 instead, at least for an application final link. However, when
3788 creating a shared library containing foo, we need to have both symbols
3789 dynamic so that references to .foo are satisfied during the early
3790 stages of linking. Otherwise the linker might decide to pull in a
3791 definition from some other object, eg. a static library.
3793 Update: As of August 2004, we support a new convention. Function
3794 calls may use the function descriptor symbol, ie. "bl foo". This
3795 behaves exactly as "bl .foo". */
3797 /* Of those relocs that might be copied as dynamic relocs, this
3798 function selects those that must be copied when linking a shared
3799 library or PIE, even when the symbol is local. */
3802 must_be_dyn_reloc (struct bfd_link_info
*info
,
3803 enum elf_ppc64_reloc_type r_type
)
3808 /* Only relative relocs can be resolved when the object load
3809 address isn't fixed. DTPREL64 is excluded because the
3810 dynamic linker needs to differentiate global dynamic from
3811 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3819 case R_PPC64_TPREL16
:
3820 case R_PPC64_TPREL16_LO
:
3821 case R_PPC64_TPREL16_HI
:
3822 case R_PPC64_TPREL16_HA
:
3823 case R_PPC64_TPREL16_DS
:
3824 case R_PPC64_TPREL16_LO_DS
:
3825 case R_PPC64_TPREL16_HIGH
:
3826 case R_PPC64_TPREL16_HIGHA
:
3827 case R_PPC64_TPREL16_HIGHER
:
3828 case R_PPC64_TPREL16_HIGHERA
:
3829 case R_PPC64_TPREL16_HIGHEST
:
3830 case R_PPC64_TPREL16_HIGHESTA
:
3831 case R_PPC64_TPREL64
:
3832 /* These relocations are relative but in a shared library the
3833 linker doesn't know the thread pointer base. */
3834 return bfd_link_dll (info
);
3838 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3839 copying dynamic variables from a shared lib into an app's dynbss
3840 section, and instead use a dynamic relocation to point into the
3841 shared lib. With code that gcc generates, it's vital that this be
3842 enabled; In the PowerPC64 ABI, the address of a function is actually
3843 the address of a function descriptor, which resides in the .opd
3844 section. gcc uses the descriptor directly rather than going via the
3845 GOT as some other ABI's do, which means that initialized function
3846 pointers must reference the descriptor. Thus, a function pointer
3847 initialized to the address of a function in a shared library will
3848 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3849 redefines the function descriptor symbol to point to the copy. This
3850 presents a problem as a plt entry for that function is also
3851 initialized from the function descriptor symbol and the copy reloc
3852 may not be initialized first. */
3853 #define ELIMINATE_COPY_RELOCS 1
3855 /* Section name for stubs is the associated section name plus this
3857 #define STUB_SUFFIX ".stub"
3860 ppc_stub_long_branch:
3861 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3862 destination, but a 24 bit branch in a stub section will reach.
3865 ppc_stub_plt_branch:
3866 Similar to the above, but a 24 bit branch in the stub section won't
3867 reach its destination.
3868 . addis %r11,%r2,xxx@toc@ha
3869 . ld %r12,xxx@toc@l(%r11)
3874 Used to call a function in a shared library. If it so happens that
3875 the plt entry referenced crosses a 64k boundary, then an extra
3876 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3878 . addis %r11,%r2,xxx@toc@ha
3879 . ld %r12,xxx+0@toc@l(%r11)
3881 . ld %r2,xxx+8@toc@l(%r11)
3882 . ld %r11,xxx+16@toc@l(%r11)
3885 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3886 code to adjust the value and save r2 to support multiple toc sections.
3887 A ppc_stub_long_branch with an r2 offset looks like:
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3893 A ppc_stub_plt_branch with an r2 offset looks like:
3895 . addis %r11,%r2,xxx@toc@ha
3896 . ld %r12,xxx@toc@l(%r11)
3897 . addis %r2,%r2,off@ha
3898 . addi %r2,%r2,off@l
3902 In cases where the "addis" instruction would add zero, the "addis" is
3903 omitted and following instructions modified slightly in some cases.
3906 enum ppc_stub_type
{
3908 ppc_stub_long_branch
,
3909 ppc_stub_long_branch_r2off
,
3910 ppc_stub_plt_branch
,
3911 ppc_stub_plt_branch_r2off
,
3913 ppc_stub_plt_call_r2save
,
3914 ppc_stub_global_entry
,
3918 /* Information on stub grouping. */
3921 /* The stub section. */
3923 /* This is the section to which stubs in the group will be attached. */
3926 struct map_stub
*next
;
3927 /* Whether to emit a copy of register save/restore functions in this
3930 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3931 or -1u if no such stub with bctrl exists. */
3932 unsigned int tls_get_addr_opt_bctrl
;
3935 struct ppc_stub_hash_entry
{
3937 /* Base hash table entry structure. */
3938 struct bfd_hash_entry root
;
3940 enum ppc_stub_type stub_type
;
3942 /* Group information. */
3943 struct map_stub
*group
;
3945 /* Offset within stub_sec of the beginning of this stub. */
3946 bfd_vma stub_offset
;
3948 /* Given the symbol's value and its section we can determine its final
3949 value when building the stubs (so the stub knows where to jump. */
3950 bfd_vma target_value
;
3951 asection
*target_section
;
3953 /* The symbol table entry, if any, that this was derived from. */
3954 struct ppc_link_hash_entry
*h
;
3955 struct plt_entry
*plt_ent
;
3957 /* Symbol st_other. */
3958 unsigned char other
;
3961 struct ppc_branch_hash_entry
{
3963 /* Base hash table entry structure. */
3964 struct bfd_hash_entry root
;
3966 /* Offset within branch lookup table. */
3967 unsigned int offset
;
3969 /* Generation marker. */
3973 /* Used to track dynamic relocations for local symbols. */
3974 struct ppc_dyn_relocs
3976 struct ppc_dyn_relocs
*next
;
3978 /* The input section of the reloc. */
3981 /* Total number of relocs copied for the input section. */
3982 unsigned int count
: 31;
3984 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3985 unsigned int ifunc
: 1;
3988 struct ppc_link_hash_entry
3990 struct elf_link_hash_entry elf
;
3993 /* A pointer to the most recently used stub hash entry against this
3995 struct ppc_stub_hash_entry
*stub_cache
;
3997 /* A pointer to the next symbol starting with a '.' */
3998 struct ppc_link_hash_entry
*next_dot_sym
;
4001 /* Track dynamic relocs copied for this symbol. */
4002 struct elf_dyn_relocs
*dyn_relocs
;
4004 /* Link between function code and descriptor symbols. */
4005 struct ppc_link_hash_entry
*oh
;
4007 /* Flag function code and descriptor symbols. */
4008 unsigned int is_func
:1;
4009 unsigned int is_func_descriptor
:1;
4010 unsigned int fake
:1;
4012 /* Whether global opd/toc sym has been adjusted or not.
4013 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4014 should be set for all globals defined in any opd/toc section. */
4015 unsigned int adjust_done
:1;
4017 /* Set if this is an out-of-line register save/restore function,
4018 with non-standard calling convention. */
4019 unsigned int save_res
:1;
4021 /* Set if a duplicate symbol with non-zero localentry is detected,
4022 even when the duplicate symbol does not provide a definition. */
4023 unsigned int non_zero_localentry
:1;
4025 /* Contexts in which symbol is used in the GOT (or TOC).
4026 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4027 corresponding relocs are encountered during check_relocs.
4028 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4029 indicate the corresponding GOT entry type is not needed.
4030 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4031 a TPREL one. We use a separate flag rather than setting TPREL
4032 just for convenience in distinguishing the two cases. */
4033 #define TLS_GD 1 /* GD reloc. */
4034 #define TLS_LD 2 /* LD reloc. */
4035 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4036 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4037 #define TLS_TLS 16 /* Any TLS reloc. */
4038 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4039 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4040 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4041 unsigned char tls_mask
;
4044 /* ppc64 ELF linker hash table. */
4046 struct ppc_link_hash_table
4048 struct elf_link_hash_table elf
;
4050 /* The stub hash table. */
4051 struct bfd_hash_table stub_hash_table
;
4053 /* Another hash table for plt_branch stubs. */
4054 struct bfd_hash_table branch_hash_table
;
4056 /* Hash table for function prologue tocsave. */
4057 htab_t tocsave_htab
;
4059 /* Various options and other info passed from the linker. */
4060 struct ppc64_elf_params
*params
;
4062 /* The size of sec_info below. */
4063 unsigned int sec_info_arr_size
;
4065 /* Per-section array of extra section info. Done this way rather
4066 than as part of ppc64_elf_section_data so we have the info for
4067 non-ppc64 sections. */
4070 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4075 /* The section group that this section belongs to. */
4076 struct map_stub
*group
;
4077 /* A temp section list pointer. */
4082 /* Linked list of groups. */
4083 struct map_stub
*group
;
4085 /* Temp used when calculating TOC pointers. */
4088 asection
*toc_first_sec
;
4090 /* Used when adding symbols. */
4091 struct ppc_link_hash_entry
*dot_syms
;
4093 /* Shortcuts to get to dynamic linker sections. */
4098 asection
*glink_eh_frame
;
4100 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4101 struct ppc_link_hash_entry
*tls_get_addr
;
4102 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4104 /* The size of reliplt used by got entry relocs. */
4105 bfd_size_type got_reli_size
;
4108 unsigned long stub_count
[ppc_stub_global_entry
];
4110 /* Number of stubs against global syms. */
4111 unsigned long stub_globals
;
4113 /* Set if we're linking code with function descriptors. */
4114 unsigned int opd_abi
:1;
4116 /* Support for multiple toc sections. */
4117 unsigned int do_multi_toc
:1;
4118 unsigned int multi_toc_needed
:1;
4119 unsigned int second_toc_pass
:1;
4120 unsigned int do_toc_opt
:1;
4122 /* Set if tls optimization is enabled. */
4123 unsigned int do_tls_opt
:1;
4126 unsigned int stub_error
:1;
4128 /* Whether func_desc_adjust needs to be run over symbols. */
4129 unsigned int need_func_desc_adj
:1;
4131 /* Whether there exist local gnu indirect function resolvers,
4132 referenced by dynamic relocations. */
4133 unsigned int local_ifunc_resolver
:1;
4134 unsigned int maybe_local_ifunc_resolver
:1;
4136 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4137 unsigned int has_plt_localentry0
:1;
4139 /* Incremented every time we size stubs. */
4140 unsigned int stub_iteration
;
4142 /* Small local sym cache. */
4143 struct sym_cache sym_cache
;
4146 /* Rename some of the generic section flags to better document how they
4149 /* Nonzero if this section has TLS related relocations. */
4150 #define has_tls_reloc sec_flg0
4152 /* Nonzero if this section has a call to __tls_get_addr. */
4153 #define has_tls_get_addr_call sec_flg1
4155 /* Nonzero if this section has any toc or got relocs. */
4156 #define has_toc_reloc sec_flg2
4158 /* Nonzero if this section has a call to another section that uses
4160 #define makes_toc_func_call sec_flg3
4162 /* Recursion protection when determining above flag. */
4163 #define call_check_in_progress sec_flg4
4164 #define call_check_done sec_flg5
4166 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4168 #define ppc_hash_table(p) \
4169 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4170 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4172 #define ppc_stub_hash_lookup(table, string, create, copy) \
4173 ((struct ppc_stub_hash_entry *) \
4174 bfd_hash_lookup ((table), (string), (create), (copy)))
4176 #define ppc_branch_hash_lookup(table, string, create, copy) \
4177 ((struct ppc_branch_hash_entry *) \
4178 bfd_hash_lookup ((table), (string), (create), (copy)))
4180 /* Create an entry in the stub hash table. */
4182 static struct bfd_hash_entry
*
4183 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4184 struct bfd_hash_table
*table
,
4187 /* Allocate the structure if it has not already been allocated by a
4191 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4196 /* Call the allocation method of the superclass. */
4197 entry
= bfd_hash_newfunc (entry
, table
, string
);
4200 struct ppc_stub_hash_entry
*eh
;
4202 /* Initialize the local fields. */
4203 eh
= (struct ppc_stub_hash_entry
*) entry
;
4204 eh
->stub_type
= ppc_stub_none
;
4206 eh
->stub_offset
= 0;
4207 eh
->target_value
= 0;
4208 eh
->target_section
= NULL
;
4217 /* Create an entry in the branch hash table. */
4219 static struct bfd_hash_entry
*
4220 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4221 struct bfd_hash_table
*table
,
4224 /* Allocate the structure if it has not already been allocated by a
4228 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4233 /* Call the allocation method of the superclass. */
4234 entry
= bfd_hash_newfunc (entry
, table
, string
);
4237 struct ppc_branch_hash_entry
*eh
;
4239 /* Initialize the local fields. */
4240 eh
= (struct ppc_branch_hash_entry
*) entry
;
4248 /* Create an entry in a ppc64 ELF linker hash table. */
4250 static struct bfd_hash_entry
*
4251 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4252 struct bfd_hash_table
*table
,
4255 /* Allocate the structure if it has not already been allocated by a
4259 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4264 /* Call the allocation method of the superclass. */
4265 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4268 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4270 memset (&eh
->u
.stub_cache
, 0,
4271 (sizeof (struct ppc_link_hash_entry
)
4272 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4274 /* When making function calls, old ABI code references function entry
4275 points (dot symbols), while new ABI code references the function
4276 descriptor symbol. We need to make any combination of reference and
4277 definition work together, without breaking archive linking.
4279 For a defined function "foo" and an undefined call to "bar":
4280 An old object defines "foo" and ".foo", references ".bar" (possibly
4282 A new object defines "foo" and references "bar".
4284 A new object thus has no problem with its undefined symbols being
4285 satisfied by definitions in an old object. On the other hand, the
4286 old object won't have ".bar" satisfied by a new object.
4288 Keep a list of newly added dot-symbols. */
4290 if (string
[0] == '.')
4292 struct ppc_link_hash_table
*htab
;
4294 htab
= (struct ppc_link_hash_table
*) table
;
4295 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4296 htab
->dot_syms
= eh
;
4303 struct tocsave_entry
{
4309 tocsave_htab_hash (const void *p
)
4311 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4312 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4316 tocsave_htab_eq (const void *p1
, const void *p2
)
4318 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4319 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4320 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4323 /* Destroy a ppc64 ELF linker hash table. */
4326 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4328 struct ppc_link_hash_table
*htab
;
4330 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4331 if (htab
->tocsave_htab
)
4332 htab_delete (htab
->tocsave_htab
);
4333 bfd_hash_table_free (&htab
->branch_hash_table
);
4334 bfd_hash_table_free (&htab
->stub_hash_table
);
4335 _bfd_elf_link_hash_table_free (obfd
);
4338 /* Create a ppc64 ELF linker hash table. */
4340 static struct bfd_link_hash_table
*
4341 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4343 struct ppc_link_hash_table
*htab
;
4344 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4346 htab
= bfd_zmalloc (amt
);
4350 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4351 sizeof (struct ppc_link_hash_entry
),
4358 /* Init the stub hash table too. */
4359 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4360 sizeof (struct ppc_stub_hash_entry
)))
4362 _bfd_elf_link_hash_table_free (abfd
);
4366 /* And the branch hash table. */
4367 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4368 sizeof (struct ppc_branch_hash_entry
)))
4370 bfd_hash_table_free (&htab
->stub_hash_table
);
4371 _bfd_elf_link_hash_table_free (abfd
);
4375 htab
->tocsave_htab
= htab_try_create (1024,
4379 if (htab
->tocsave_htab
== NULL
)
4381 ppc64_elf_link_hash_table_free (abfd
);
4384 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4386 /* Initializing two fields of the union is just cosmetic. We really
4387 only care about glist, but when compiled on a 32-bit host the
4388 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4389 debugger inspection of these fields look nicer. */
4390 htab
->elf
.init_got_refcount
.refcount
= 0;
4391 htab
->elf
.init_got_refcount
.glist
= NULL
;
4392 htab
->elf
.init_plt_refcount
.refcount
= 0;
4393 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4394 htab
->elf
.init_got_offset
.offset
= 0;
4395 htab
->elf
.init_got_offset
.glist
= NULL
;
4396 htab
->elf
.init_plt_offset
.offset
= 0;
4397 htab
->elf
.init_plt_offset
.glist
= NULL
;
4399 return &htab
->elf
.root
;
4402 /* Create sections for linker generated code. */
4405 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4407 struct ppc_link_hash_table
*htab
;
4410 htab
= ppc_hash_table (info
);
4412 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4413 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4414 if (htab
->params
->save_restore_funcs
)
4416 /* Create .sfpr for code to save and restore fp regs. */
4417 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4419 if (htab
->sfpr
== NULL
4420 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4424 if (bfd_link_relocatable (info
))
4427 /* Create .glink for lazy dynamic linking support. */
4428 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4430 if (htab
->glink
== NULL
4431 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4434 if (!info
->no_ld_generated_unwind_info
)
4436 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4437 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4438 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4441 if (htab
->glink_eh_frame
== NULL
4442 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4446 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4447 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4448 if (htab
->elf
.iplt
== NULL
4449 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4452 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4453 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4455 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4456 if (htab
->elf
.irelplt
== NULL
4457 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4460 /* Create branch lookup table for plt_branch stubs. */
4461 flags
= (SEC_ALLOC
| SEC_LOAD
4462 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4463 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4465 if (htab
->brlt
== NULL
4466 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4469 if (!bfd_link_pic (info
))
4472 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4473 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4474 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4477 if (htab
->relbrlt
== NULL
4478 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4484 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4487 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4488 struct ppc64_elf_params
*params
)
4490 struct ppc_link_hash_table
*htab
;
4492 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4494 /* Always hook our dynamic sections into the first bfd, which is the
4495 linker created stub bfd. This ensures that the GOT header is at
4496 the start of the output TOC section. */
4497 htab
= ppc_hash_table (info
);
4498 htab
->elf
.dynobj
= params
->stub_bfd
;
4499 htab
->params
= params
;
4501 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4504 /* Build a name for an entry in the stub hash table. */
4507 ppc_stub_name (const asection
*input_section
,
4508 const asection
*sym_sec
,
4509 const struct ppc_link_hash_entry
*h
,
4510 const Elf_Internal_Rela
*rel
)
4515 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4516 offsets from a sym as a branch target? In fact, we could
4517 probably assume the addend is always zero. */
4518 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4522 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4523 stub_name
= bfd_malloc (len
);
4524 if (stub_name
== NULL
)
4527 len
= sprintf (stub_name
, "%08x.%s+%x",
4528 input_section
->id
& 0xffffffff,
4529 h
->elf
.root
.root
.string
,
4530 (int) rel
->r_addend
& 0xffffffff);
4534 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4535 stub_name
= bfd_malloc (len
);
4536 if (stub_name
== NULL
)
4539 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4540 input_section
->id
& 0xffffffff,
4541 sym_sec
->id
& 0xffffffff,
4542 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4543 (int) rel
->r_addend
& 0xffffffff);
4545 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4546 stub_name
[len
- 2] = 0;
4550 /* Look up an entry in the stub hash. Stub entries are cached because
4551 creating the stub name takes a bit of time. */
4553 static struct ppc_stub_hash_entry
*
4554 ppc_get_stub_entry (const asection
*input_section
,
4555 const asection
*sym_sec
,
4556 struct ppc_link_hash_entry
*h
,
4557 const Elf_Internal_Rela
*rel
,
4558 struct ppc_link_hash_table
*htab
)
4560 struct ppc_stub_hash_entry
*stub_entry
;
4561 struct map_stub
*group
;
4563 /* If this input section is part of a group of sections sharing one
4564 stub section, then use the id of the first section in the group.
4565 Stub names need to include a section id, as there may well be
4566 more than one stub used to reach say, printf, and we need to
4567 distinguish between them. */
4568 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4572 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4573 && h
->u
.stub_cache
->h
== h
4574 && h
->u
.stub_cache
->group
== group
)
4576 stub_entry
= h
->u
.stub_cache
;
4582 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4583 if (stub_name
== NULL
)
4586 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4587 stub_name
, FALSE
, FALSE
);
4589 h
->u
.stub_cache
= stub_entry
;
4597 /* Add a new stub entry to the stub hash. Not all fields of the new
4598 stub entry are initialised. */
4600 static struct ppc_stub_hash_entry
*
4601 ppc_add_stub (const char *stub_name
,
4603 struct bfd_link_info
*info
)
4605 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4606 struct map_stub
*group
;
4609 struct ppc_stub_hash_entry
*stub_entry
;
4611 group
= htab
->sec_info
[section
->id
].u
.group
;
4612 link_sec
= group
->link_sec
;
4613 stub_sec
= group
->stub_sec
;
4614 if (stub_sec
== NULL
)
4620 namelen
= strlen (link_sec
->name
);
4621 len
= namelen
+ sizeof (STUB_SUFFIX
);
4622 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4626 memcpy (s_name
, link_sec
->name
, namelen
);
4627 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4628 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4629 if (stub_sec
== NULL
)
4631 group
->stub_sec
= stub_sec
;
4634 /* Enter this entry into the linker stub hash table. */
4635 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4637 if (stub_entry
== NULL
)
4639 /* xgettext:c-format */
4640 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4641 section
->owner
, stub_name
);
4645 stub_entry
->group
= group
;
4646 stub_entry
->stub_offset
= 0;
4650 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4651 not already done. */
4654 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4656 asection
*got
, *relgot
;
4658 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4660 if (!is_ppc64_elf (abfd
))
4666 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4669 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4670 | SEC_LINKER_CREATED
);
4672 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4674 || !bfd_set_section_alignment (abfd
, got
, 3))
4677 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4678 flags
| SEC_READONLY
);
4680 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4683 ppc64_elf_tdata (abfd
)->got
= got
;
4684 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4688 /* Follow indirect and warning symbol links. */
4690 static inline struct bfd_link_hash_entry
*
4691 follow_link (struct bfd_link_hash_entry
*h
)
4693 while (h
->type
== bfd_link_hash_indirect
4694 || h
->type
== bfd_link_hash_warning
)
4699 static inline struct elf_link_hash_entry
*
4700 elf_follow_link (struct elf_link_hash_entry
*h
)
4702 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4705 static inline struct ppc_link_hash_entry
*
4706 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4708 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4711 /* Merge PLT info on FROM with that on TO. */
4714 move_plt_plist (struct ppc_link_hash_entry
*from
,
4715 struct ppc_link_hash_entry
*to
)
4717 if (from
->elf
.plt
.plist
!= NULL
)
4719 if (to
->elf
.plt
.plist
!= NULL
)
4721 struct plt_entry
**entp
;
4722 struct plt_entry
*ent
;
4724 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4726 struct plt_entry
*dent
;
4728 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4729 if (dent
->addend
== ent
->addend
)
4731 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4738 *entp
= to
->elf
.plt
.plist
;
4741 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4742 from
->elf
.plt
.plist
= NULL
;
4746 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4749 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4750 struct elf_link_hash_entry
*dir
,
4751 struct elf_link_hash_entry
*ind
)
4753 struct ppc_link_hash_entry
*edir
, *eind
;
4755 edir
= (struct ppc_link_hash_entry
*) dir
;
4756 eind
= (struct ppc_link_hash_entry
*) ind
;
4758 edir
->is_func
|= eind
->is_func
;
4759 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4760 edir
->tls_mask
|= eind
->tls_mask
;
4761 if (eind
->oh
!= NULL
)
4762 edir
->oh
= ppc_follow_link (eind
->oh
);
4764 /* If called to transfer flags for a weakdef during processing
4765 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4766 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4767 if (!(ELIMINATE_COPY_RELOCS
4768 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4769 && edir
->elf
.dynamic_adjusted
))
4770 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4772 if (edir
->elf
.versioned
!= versioned_hidden
)
4773 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4774 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4775 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4776 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4777 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4779 /* If we were called to copy over info for a weak sym, don't copy
4780 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4781 in order to simplify readonly_dynrelocs and save a field in the
4782 symbol hash entry, but that means dyn_relocs can't be used in any
4783 tests about a specific symbol, or affect other symbol flags which
4785 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4788 /* Copy over any dynamic relocs we may have on the indirect sym. */
4789 if (eind
->dyn_relocs
!= NULL
)
4791 if (edir
->dyn_relocs
!= NULL
)
4793 struct elf_dyn_relocs
**pp
;
4794 struct elf_dyn_relocs
*p
;
4796 /* Add reloc counts against the indirect sym to the direct sym
4797 list. Merge any entries against the same section. */
4798 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4800 struct elf_dyn_relocs
*q
;
4802 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4803 if (q
->sec
== p
->sec
)
4805 q
->pc_count
+= p
->pc_count
;
4806 q
->count
+= p
->count
;
4813 *pp
= edir
->dyn_relocs
;
4816 edir
->dyn_relocs
= eind
->dyn_relocs
;
4817 eind
->dyn_relocs
= NULL
;
4820 /* Copy over got entries that we may have already seen to the
4821 symbol which just became indirect. */
4822 if (eind
->elf
.got
.glist
!= NULL
)
4824 if (edir
->elf
.got
.glist
!= NULL
)
4826 struct got_entry
**entp
;
4827 struct got_entry
*ent
;
4829 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4831 struct got_entry
*dent
;
4833 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4834 if (dent
->addend
== ent
->addend
4835 && dent
->owner
== ent
->owner
4836 && dent
->tls_type
== ent
->tls_type
)
4838 dent
->got
.refcount
+= ent
->got
.refcount
;
4845 *entp
= edir
->elf
.got
.glist
;
4848 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4849 eind
->elf
.got
.glist
= NULL
;
4852 /* And plt entries. */
4853 move_plt_plist (eind
, edir
);
4855 if (eind
->elf
.dynindx
!= -1)
4857 if (edir
->elf
.dynindx
!= -1)
4858 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4859 edir
->elf
.dynstr_index
);
4860 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4861 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4862 eind
->elf
.dynindx
= -1;
4863 eind
->elf
.dynstr_index
= 0;
4867 /* Find the function descriptor hash entry from the given function code
4868 hash entry FH. Link the entries via their OH fields. */
4870 static struct ppc_link_hash_entry
*
4871 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4873 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4877 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4879 fdh
= (struct ppc_link_hash_entry
*)
4880 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4884 fdh
->is_func_descriptor
= 1;
4890 fdh
= ppc_follow_link (fdh
);
4891 fdh
->is_func_descriptor
= 1;
4896 /* Make a fake function descriptor sym for the undefined code sym FH. */
4898 static struct ppc_link_hash_entry
*
4899 make_fdh (struct bfd_link_info
*info
,
4900 struct ppc_link_hash_entry
*fh
)
4902 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4903 struct bfd_link_hash_entry
*bh
= NULL
;
4904 struct ppc_link_hash_entry
*fdh
;
4905 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4909 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4910 fh
->elf
.root
.root
.string
+ 1,
4911 flags
, bfd_und_section_ptr
, 0,
4912 NULL
, FALSE
, FALSE
, &bh
))
4915 fdh
= (struct ppc_link_hash_entry
*) bh
;
4916 fdh
->elf
.non_elf
= 0;
4918 fdh
->is_func_descriptor
= 1;
4925 /* Fix function descriptor symbols defined in .opd sections to be
4929 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4930 struct bfd_link_info
*info
,
4931 Elf_Internal_Sym
*isym
,
4933 flagword
*flags ATTRIBUTE_UNUSED
,
4937 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4938 && (ibfd
->flags
& DYNAMIC
) == 0
4939 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4940 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4943 && strcmp ((*sec
)->name
, ".opd") == 0)
4947 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4948 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4949 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4951 /* If the symbol is a function defined in .opd, and the function
4952 code is in a discarded group, let it appear to be undefined. */
4953 if (!bfd_link_relocatable (info
)
4954 && (*sec
)->reloc_count
!= 0
4955 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4956 FALSE
) != (bfd_vma
) -1
4957 && discarded_section (code_sec
))
4959 *sec
= bfd_und_section_ptr
;
4960 isym
->st_shndx
= SHN_UNDEF
;
4963 else if (*sec
!= NULL
4964 && strcmp ((*sec
)->name
, ".toc") == 0
4965 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4967 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4969 htab
->params
->object_in_toc
= 1;
4972 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4974 if (abiversion (ibfd
) == 0)
4975 set_abiversion (ibfd
, 2);
4976 else if (abiversion (ibfd
) == 1)
4978 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4979 " for ABI version 1\n"), name
);
4980 bfd_set_error (bfd_error_bad_value
);
4988 /* Merge non-visibility st_other attributes: local entry point. */
4991 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4992 const Elf_Internal_Sym
*isym
,
4993 bfd_boolean definition
,
4994 bfd_boolean dynamic
)
4996 if (definition
&& (!dynamic
|| !h
->def_regular
))
4997 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4998 | ELF_ST_VISIBILITY (h
->other
));
5001 /* Hook called on merging a symbol. We use this to clear "fake" since
5002 we now have a real symbol. */
5005 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5006 const Elf_Internal_Sym
*isym
,
5007 asection
**psec ATTRIBUTE_UNUSED
,
5008 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5009 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5010 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5011 const asection
*oldsec ATTRIBUTE_UNUSED
)
5013 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5014 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5015 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5019 /* This function makes an old ABI object reference to ".bar" cause the
5020 inclusion of a new ABI object archive that defines "bar".
5021 NAME is a symbol defined in an archive. Return a symbol in the hash
5022 table that might be satisfied by the archive symbols. */
5024 static struct elf_link_hash_entry
*
5025 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5026 struct bfd_link_info
*info
,
5029 struct elf_link_hash_entry
*h
;
5033 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5035 /* Don't return this sym if it is a fake function descriptor
5036 created by add_symbol_adjust. */
5037 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5043 len
= strlen (name
);
5044 dot_name
= bfd_alloc (abfd
, len
+ 2);
5045 if (dot_name
== NULL
)
5046 return (struct elf_link_hash_entry
*) 0 - 1;
5048 memcpy (dot_name
+ 1, name
, len
+ 1);
5049 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5050 bfd_release (abfd
, dot_name
);
5054 /* This function satisfies all old ABI object references to ".bar" if a
5055 new ABI object defines "bar". Well, at least, undefined dot symbols
5056 are made weak. This stops later archive searches from including an
5057 object if we already have a function descriptor definition. It also
5058 prevents the linker complaining about undefined symbols.
5059 We also check and correct mismatched symbol visibility here. The
5060 most restrictive visibility of the function descriptor and the
5061 function entry symbol is used. */
5064 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5066 struct ppc_link_hash_table
*htab
;
5067 struct ppc_link_hash_entry
*fdh
;
5069 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5070 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5072 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5075 if (eh
->elf
.root
.root
.string
[0] != '.')
5078 htab
= ppc_hash_table (info
);
5082 fdh
= lookup_fdh (eh
, htab
);
5084 && !bfd_link_relocatable (info
)
5085 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5086 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5087 && eh
->elf
.ref_regular
)
5089 /* Make an undefined function descriptor sym, in order to
5090 pull in an --as-needed shared lib. Archives are handled
5092 fdh
= make_fdh (info
, eh
);
5099 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5100 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5102 /* Make both descriptor and entry symbol have the most
5103 constraining visibility of either symbol. */
5104 if (entry_vis
< descr_vis
)
5105 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5106 else if (entry_vis
> descr_vis
)
5107 eh
->elf
.other
+= descr_vis
- entry_vis
;
5109 /* Propagate reference flags from entry symbol to function
5110 descriptor symbol. */
5111 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5112 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5113 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5114 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5116 if (!fdh
->elf
.forced_local
5117 && fdh
->elf
.dynindx
== -1
5118 && fdh
->elf
.versioned
!= versioned_hidden
5119 && (bfd_link_dll (info
)
5120 || fdh
->elf
.def_dynamic
5121 || fdh
->elf
.ref_dynamic
)
5122 && (eh
->elf
.ref_regular
5123 || eh
->elf
.def_regular
))
5125 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5133 /* Set up opd section info and abiversion for IBFD, and process list
5134 of dot-symbols we made in link_hash_newfunc. */
5137 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5139 struct ppc_link_hash_table
*htab
;
5140 struct ppc_link_hash_entry
**p
, *eh
;
5141 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5143 if (opd
!= NULL
&& opd
->size
!= 0)
5145 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5146 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5148 if (abiversion (ibfd
) == 0)
5149 set_abiversion (ibfd
, 1);
5150 else if (abiversion (ibfd
) >= 2)
5152 /* xgettext:c-format */
5153 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5155 ibfd
, abiversion (ibfd
));
5156 bfd_set_error (bfd_error_bad_value
);
5161 if (is_ppc64_elf (info
->output_bfd
))
5163 /* For input files without an explicit abiversion in e_flags
5164 we should have flagged any with symbol st_other bits set
5165 as ELFv1 and above flagged those with .opd as ELFv2.
5166 Set the output abiversion if not yet set, and for any input
5167 still ambiguous, take its abiversion from the output.
5168 Differences in ABI are reported later. */
5169 if (abiversion (info
->output_bfd
) == 0)
5170 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5171 else if (abiversion (ibfd
) == 0)
5172 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5175 htab
= ppc_hash_table (info
);
5179 if (opd
!= NULL
&& opd
->size
!= 0
5180 && (ibfd
->flags
& DYNAMIC
) == 0
5181 && (opd
->flags
& SEC_RELOC
) != 0
5182 && opd
->reloc_count
!= 0
5183 && !bfd_is_abs_section (opd
->output_section
)
5184 && info
->gc_sections
)
5186 /* Garbage collection needs some extra help with .opd sections.
5187 We don't want to necessarily keep everything referenced by
5188 relocs in .opd, as that would keep all functions. Instead,
5189 if we reference an .opd symbol (a function descriptor), we
5190 want to keep the function code symbol's section. This is
5191 easy for global symbols, but for local syms we need to keep
5192 information about the associated function section. */
5194 asection
**opd_sym_map
;
5195 Elf_Internal_Shdr
*symtab_hdr
;
5196 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5198 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5199 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5200 if (opd_sym_map
== NULL
)
5202 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5203 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5207 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5208 rel_end
= relocs
+ opd
->reloc_count
- 1;
5209 for (rel
= relocs
; rel
< rel_end
; rel
++)
5211 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5212 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5214 if (r_type
== R_PPC64_ADDR64
5215 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5216 && r_symndx
< symtab_hdr
->sh_info
)
5218 Elf_Internal_Sym
*isym
;
5221 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5224 if (elf_section_data (opd
)->relocs
!= relocs
)
5229 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5230 if (s
!= NULL
&& s
!= opd
)
5231 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5234 if (elf_section_data (opd
)->relocs
!= relocs
)
5238 p
= &htab
->dot_syms
;
5239 while ((eh
= *p
) != NULL
)
5242 if (&eh
->elf
== htab
->elf
.hgot
)
5244 else if (htab
->elf
.hgot
== NULL
5245 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5246 htab
->elf
.hgot
= &eh
->elf
;
5247 else if (abiversion (ibfd
) <= 1)
5249 htab
->need_func_desc_adj
= 1;
5250 if (!add_symbol_adjust (eh
, info
))
5253 p
= &eh
->u
.next_dot_sym
;
5258 /* Undo hash table changes when an --as-needed input file is determined
5259 not to be needed. */
5262 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5263 struct bfd_link_info
*info
,
5264 enum notice_asneeded_action act
)
5266 if (act
== notice_not_needed
)
5268 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5273 htab
->dot_syms
= NULL
;
5275 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5278 /* If --just-symbols against a final linked binary, then assume we need
5279 toc adjusting stubs when calling functions defined there. */
5282 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5284 if ((sec
->flags
& SEC_CODE
) != 0
5285 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5286 && is_ppc64_elf (sec
->owner
))
5288 if (abiversion (sec
->owner
) >= 2
5289 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5290 sec
->has_toc_reloc
= 1;
5292 _bfd_elf_link_just_syms (sec
, info
);
5295 static struct plt_entry
**
5296 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5297 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5299 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5300 struct plt_entry
**local_plt
;
5301 unsigned char *local_got_tls_masks
;
5303 if (local_got_ents
== NULL
)
5305 bfd_size_type size
= symtab_hdr
->sh_info
;
5307 size
*= (sizeof (*local_got_ents
)
5308 + sizeof (*local_plt
)
5309 + sizeof (*local_got_tls_masks
));
5310 local_got_ents
= bfd_zalloc (abfd
, size
);
5311 if (local_got_ents
== NULL
)
5313 elf_local_got_ents (abfd
) = local_got_ents
;
5316 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5318 struct got_entry
*ent
;
5320 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5321 if (ent
->addend
== r_addend
5322 && ent
->owner
== abfd
5323 && ent
->tls_type
== tls_type
)
5327 bfd_size_type amt
= sizeof (*ent
);
5328 ent
= bfd_alloc (abfd
, amt
);
5331 ent
->next
= local_got_ents
[r_symndx
];
5332 ent
->addend
= r_addend
;
5334 ent
->tls_type
= tls_type
;
5335 ent
->is_indirect
= FALSE
;
5336 ent
->got
.refcount
= 0;
5337 local_got_ents
[r_symndx
] = ent
;
5339 ent
->got
.refcount
+= 1;
5342 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5343 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5344 local_got_tls_masks
[r_symndx
] |= tls_type
;
5346 return local_plt
+ r_symndx
;
5350 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5352 struct plt_entry
*ent
;
5354 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5355 if (ent
->addend
== addend
)
5359 bfd_size_type amt
= sizeof (*ent
);
5360 ent
= bfd_alloc (abfd
, amt
);
5364 ent
->addend
= addend
;
5365 ent
->plt
.refcount
= 0;
5368 ent
->plt
.refcount
+= 1;
5373 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5375 return (r_type
== R_PPC64_REL24
5376 || r_type
== R_PPC64_REL14
5377 || r_type
== R_PPC64_REL14_BRTAKEN
5378 || r_type
== R_PPC64_REL14_BRNTAKEN
5379 || r_type
== R_PPC64_ADDR24
5380 || r_type
== R_PPC64_ADDR14
5381 || r_type
== R_PPC64_ADDR14_BRTAKEN
5382 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5385 /* Look through the relocs for a section during the first phase, and
5386 calculate needed space in the global offset table, procedure
5387 linkage table, and dynamic reloc sections. */
5390 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5391 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5393 struct ppc_link_hash_table
*htab
;
5394 Elf_Internal_Shdr
*symtab_hdr
;
5395 struct elf_link_hash_entry
**sym_hashes
;
5396 const Elf_Internal_Rela
*rel
;
5397 const Elf_Internal_Rela
*rel_end
;
5399 struct elf_link_hash_entry
*tga
, *dottga
;
5402 if (bfd_link_relocatable (info
))
5405 /* Don't do anything special with non-loaded, non-alloced sections.
5406 In particular, any relocs in such sections should not affect GOT
5407 and PLT reference counting (ie. we don't allow them to create GOT
5408 or PLT entries), there's no possibility or desire to optimize TLS
5409 relocs, and there's not much point in propagating relocs to shared
5410 libs that the dynamic linker won't relocate. */
5411 if ((sec
->flags
& SEC_ALLOC
) == 0)
5414 BFD_ASSERT (is_ppc64_elf (abfd
));
5416 htab
= ppc_hash_table (info
);
5420 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5421 FALSE
, FALSE
, TRUE
);
5422 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5423 FALSE
, FALSE
, TRUE
);
5424 symtab_hdr
= &elf_symtab_hdr (abfd
);
5425 sym_hashes
= elf_sym_hashes (abfd
);
5427 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5428 rel_end
= relocs
+ sec
->reloc_count
;
5429 for (rel
= relocs
; rel
< rel_end
; rel
++)
5431 unsigned long r_symndx
;
5432 struct elf_link_hash_entry
*h
;
5433 enum elf_ppc64_reloc_type r_type
;
5435 struct _ppc64_elf_section_data
*ppc64_sec
;
5436 struct plt_entry
**ifunc
, **plt_list
;
5438 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5439 if (r_symndx
< symtab_hdr
->sh_info
)
5443 struct ppc_link_hash_entry
*eh
;
5445 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5446 h
= elf_follow_link (h
);
5447 eh
= (struct ppc_link_hash_entry
*) h
;
5449 /* PR15323, ref flags aren't set for references in the same
5451 h
->root
.non_ir_ref_regular
= 1;
5452 if (eh
->is_func
&& eh
->oh
!= NULL
)
5453 eh
->oh
->elf
.root
.non_ir_ref_regular
= 1;
5455 if (h
== htab
->elf
.hgot
)
5456 sec
->has_toc_reloc
= 1;
5463 if (h
->type
== STT_GNU_IFUNC
)
5466 ifunc
= &h
->plt
.plist
;
5471 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5476 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5478 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5479 rel
->r_addend
, PLT_IFUNC
);
5485 r_type
= ELF64_R_TYPE (rel
->r_info
);
5490 /* These special tls relocs tie a call to __tls_get_addr with
5491 its parameter symbol. */
5494 case R_PPC64_GOT_TLSLD16
:
5495 case R_PPC64_GOT_TLSLD16_LO
:
5496 case R_PPC64_GOT_TLSLD16_HI
:
5497 case R_PPC64_GOT_TLSLD16_HA
:
5498 tls_type
= TLS_TLS
| TLS_LD
;
5501 case R_PPC64_GOT_TLSGD16
:
5502 case R_PPC64_GOT_TLSGD16_LO
:
5503 case R_PPC64_GOT_TLSGD16_HI
:
5504 case R_PPC64_GOT_TLSGD16_HA
:
5505 tls_type
= TLS_TLS
| TLS_GD
;
5508 case R_PPC64_GOT_TPREL16_DS
:
5509 case R_PPC64_GOT_TPREL16_LO_DS
:
5510 case R_PPC64_GOT_TPREL16_HI
:
5511 case R_PPC64_GOT_TPREL16_HA
:
5512 if (bfd_link_dll (info
))
5513 info
->flags
|= DF_STATIC_TLS
;
5514 tls_type
= TLS_TLS
| TLS_TPREL
;
5517 case R_PPC64_GOT_DTPREL16_DS
:
5518 case R_PPC64_GOT_DTPREL16_LO_DS
:
5519 case R_PPC64_GOT_DTPREL16_HI
:
5520 case R_PPC64_GOT_DTPREL16_HA
:
5521 tls_type
= TLS_TLS
| TLS_DTPREL
;
5523 sec
->has_tls_reloc
= 1;
5527 case R_PPC64_GOT16_DS
:
5528 case R_PPC64_GOT16_HA
:
5529 case R_PPC64_GOT16_HI
:
5530 case R_PPC64_GOT16_LO
:
5531 case R_PPC64_GOT16_LO_DS
:
5532 /* This symbol requires a global offset table entry. */
5533 sec
->has_toc_reloc
= 1;
5534 if (r_type
== R_PPC64_GOT_TLSLD16
5535 || r_type
== R_PPC64_GOT_TLSGD16
5536 || r_type
== R_PPC64_GOT_TPREL16_DS
5537 || r_type
== R_PPC64_GOT_DTPREL16_DS
5538 || r_type
== R_PPC64_GOT16
5539 || r_type
== R_PPC64_GOT16_DS
)
5541 htab
->do_multi_toc
= 1;
5542 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5545 if (ppc64_elf_tdata (abfd
)->got
== NULL
5546 && !create_got_section (abfd
, info
))
5551 struct ppc_link_hash_entry
*eh
;
5552 struct got_entry
*ent
;
5554 eh
= (struct ppc_link_hash_entry
*) h
;
5555 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5556 if (ent
->addend
== rel
->r_addend
5557 && ent
->owner
== abfd
5558 && ent
->tls_type
== tls_type
)
5562 bfd_size_type amt
= sizeof (*ent
);
5563 ent
= bfd_alloc (abfd
, amt
);
5566 ent
->next
= eh
->elf
.got
.glist
;
5567 ent
->addend
= rel
->r_addend
;
5569 ent
->tls_type
= tls_type
;
5570 ent
->is_indirect
= FALSE
;
5571 ent
->got
.refcount
= 0;
5572 eh
->elf
.got
.glist
= ent
;
5574 ent
->got
.refcount
+= 1;
5575 eh
->tls_mask
|= tls_type
;
5578 /* This is a global offset table entry for a local symbol. */
5579 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5580 rel
->r_addend
, tls_type
))
5583 /* We may also need a plt entry if the symbol turns out to be
5585 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5587 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5592 case R_PPC64_PLT16_HA
:
5593 case R_PPC64_PLT16_HI
:
5594 case R_PPC64_PLT16_LO
:
5597 /* This symbol requires a procedure linkage table entry. */
5602 if (h
->root
.root
.string
[0] == '.'
5603 && h
->root
.root
.string
[1] != '\0')
5604 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5605 plt_list
= &h
->plt
.plist
;
5607 if (plt_list
== NULL
)
5609 /* It does not make sense to have a procedure linkage
5610 table entry for a non-ifunc local symbol. */
5611 info
->callbacks
->einfo
5612 /* xgettext:c-format */
5613 (_("%H: %s reloc against local symbol\n"),
5614 abfd
, sec
, rel
->r_offset
,
5615 ppc64_elf_howto_table
[r_type
]->name
);
5616 bfd_set_error (bfd_error_bad_value
);
5619 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5623 /* The following relocations don't need to propagate the
5624 relocation if linking a shared object since they are
5625 section relative. */
5626 case R_PPC64_SECTOFF
:
5627 case R_PPC64_SECTOFF_LO
:
5628 case R_PPC64_SECTOFF_HI
:
5629 case R_PPC64_SECTOFF_HA
:
5630 case R_PPC64_SECTOFF_DS
:
5631 case R_PPC64_SECTOFF_LO_DS
:
5632 case R_PPC64_DTPREL16
:
5633 case R_PPC64_DTPREL16_LO
:
5634 case R_PPC64_DTPREL16_HI
:
5635 case R_PPC64_DTPREL16_HA
:
5636 case R_PPC64_DTPREL16_DS
:
5637 case R_PPC64_DTPREL16_LO_DS
:
5638 case R_PPC64_DTPREL16_HIGH
:
5639 case R_PPC64_DTPREL16_HIGHA
:
5640 case R_PPC64_DTPREL16_HIGHER
:
5641 case R_PPC64_DTPREL16_HIGHERA
:
5642 case R_PPC64_DTPREL16_HIGHEST
:
5643 case R_PPC64_DTPREL16_HIGHESTA
:
5648 case R_PPC64_REL16_LO
:
5649 case R_PPC64_REL16_HI
:
5650 case R_PPC64_REL16_HA
:
5651 case R_PPC64_REL16DX_HA
:
5654 /* Not supported as a dynamic relocation. */
5655 case R_PPC64_ADDR64_LOCAL
:
5656 if (bfd_link_pic (info
))
5658 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5660 /* xgettext:c-format */
5661 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5662 "in shared libraries and PIEs.\n"),
5663 abfd
, sec
, rel
->r_offset
,
5664 ppc64_elf_howto_table
[r_type
]->name
);
5665 bfd_set_error (bfd_error_bad_value
);
5671 case R_PPC64_TOC16_DS
:
5672 htab
->do_multi_toc
= 1;
5673 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5675 case R_PPC64_TOC16_LO
:
5676 case R_PPC64_TOC16_HI
:
5677 case R_PPC64_TOC16_HA
:
5678 case R_PPC64_TOC16_LO_DS
:
5679 sec
->has_toc_reloc
= 1;
5686 /* This relocation describes the C++ object vtable hierarchy.
5687 Reconstruct it for later use during GC. */
5688 case R_PPC64_GNU_VTINHERIT
:
5689 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5693 /* This relocation describes which C++ vtable entries are actually
5694 used. Record for later use during GC. */
5695 case R_PPC64_GNU_VTENTRY
:
5696 BFD_ASSERT (h
!= NULL
);
5698 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5703 case R_PPC64_REL14_BRTAKEN
:
5704 case R_PPC64_REL14_BRNTAKEN
:
5706 asection
*dest
= NULL
;
5708 /* Heuristic: If jumping outside our section, chances are
5709 we are going to need a stub. */
5712 /* If the sym is weak it may be overridden later, so
5713 don't assume we know where a weak sym lives. */
5714 if (h
->root
.type
== bfd_link_hash_defined
)
5715 dest
= h
->root
.u
.def
.section
;
5719 Elf_Internal_Sym
*isym
;
5721 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5726 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5730 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5739 if (h
->root
.root
.string
[0] == '.'
5740 && h
->root
.root
.string
[1] != '\0')
5741 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5743 if (h
== tga
|| h
== dottga
)
5745 sec
->has_tls_reloc
= 1;
5747 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5748 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5749 /* We have a new-style __tls_get_addr call with
5753 /* Mark this section as having an old-style call. */
5754 sec
->has_tls_get_addr_call
= 1;
5756 plt_list
= &h
->plt
.plist
;
5759 /* We may need a .plt entry if the function this reloc
5760 refers to is in a shared lib. */
5762 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5766 case R_PPC64_ADDR14
:
5767 case R_PPC64_ADDR14_BRNTAKEN
:
5768 case R_PPC64_ADDR14_BRTAKEN
:
5769 case R_PPC64_ADDR24
:
5772 case R_PPC64_TPREL64
:
5773 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5774 if (bfd_link_dll (info
))
5775 info
->flags
|= DF_STATIC_TLS
;
5778 case R_PPC64_DTPMOD64
:
5779 if (rel
+ 1 < rel_end
5780 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5781 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5782 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5784 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5787 case R_PPC64_DTPREL64
:
5788 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5790 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5791 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5792 /* This is the second reloc of a dtpmod, dtprel pair.
5793 Don't mark with TLS_DTPREL. */
5797 sec
->has_tls_reloc
= 1;
5800 struct ppc_link_hash_entry
*eh
;
5801 eh
= (struct ppc_link_hash_entry
*) h
;
5802 eh
->tls_mask
|= tls_type
;
5805 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5806 rel
->r_addend
, tls_type
))
5809 ppc64_sec
= ppc64_elf_section_data (sec
);
5810 if (ppc64_sec
->sec_type
!= sec_toc
)
5814 /* One extra to simplify get_tls_mask. */
5815 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5816 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5817 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5819 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5820 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5821 if (ppc64_sec
->u
.toc
.add
== NULL
)
5823 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5824 ppc64_sec
->sec_type
= sec_toc
;
5826 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5827 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5828 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5830 /* Mark the second slot of a GD or LD entry.
5831 -1 to indicate GD and -2 to indicate LD. */
5832 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5833 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5834 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5835 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5838 case R_PPC64_TPREL16
:
5839 case R_PPC64_TPREL16_LO
:
5840 case R_PPC64_TPREL16_HI
:
5841 case R_PPC64_TPREL16_HA
:
5842 case R_PPC64_TPREL16_DS
:
5843 case R_PPC64_TPREL16_LO_DS
:
5844 case R_PPC64_TPREL16_HIGH
:
5845 case R_PPC64_TPREL16_HIGHA
:
5846 case R_PPC64_TPREL16_HIGHER
:
5847 case R_PPC64_TPREL16_HIGHERA
:
5848 case R_PPC64_TPREL16_HIGHEST
:
5849 case R_PPC64_TPREL16_HIGHESTA
:
5850 if (bfd_link_dll (info
))
5851 info
->flags
|= DF_STATIC_TLS
;
5854 case R_PPC64_ADDR64
:
5856 && rel
+ 1 < rel_end
5857 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5860 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5864 case R_PPC64_ADDR16
:
5865 case R_PPC64_ADDR16_DS
:
5866 case R_PPC64_ADDR16_HA
:
5867 case R_PPC64_ADDR16_HI
:
5868 case R_PPC64_ADDR16_HIGH
:
5869 case R_PPC64_ADDR16_HIGHA
:
5870 case R_PPC64_ADDR16_HIGHER
:
5871 case R_PPC64_ADDR16_HIGHERA
:
5872 case R_PPC64_ADDR16_HIGHEST
:
5873 case R_PPC64_ADDR16_HIGHESTA
:
5874 case R_PPC64_ADDR16_LO
:
5875 case R_PPC64_ADDR16_LO_DS
:
5876 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5877 && rel
->r_addend
== 0)
5879 /* We may need a .plt entry if this reloc refers to a
5880 function in a shared lib. */
5881 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5883 h
->pointer_equality_needed
= 1;
5890 case R_PPC64_ADDR32
:
5891 case R_PPC64_UADDR16
:
5892 case R_PPC64_UADDR32
:
5893 case R_PPC64_UADDR64
:
5895 if (h
!= NULL
&& !bfd_link_pic (info
))
5896 /* We may need a copy reloc. */
5899 /* Don't propagate .opd relocs. */
5900 if (NO_OPD_RELOCS
&& is_opd
)
5903 /* If we are creating a shared library, and this is a reloc
5904 against a global symbol, or a non PC relative reloc
5905 against a local symbol, then we need to copy the reloc
5906 into the shared library. However, if we are linking with
5907 -Bsymbolic, we do not need to copy a reloc against a
5908 global symbol which is defined in an object we are
5909 including in the link (i.e., DEF_REGULAR is set). At
5910 this point we have not seen all the input files, so it is
5911 possible that DEF_REGULAR is not set now but will be set
5912 later (it is never cleared). In case of a weak definition,
5913 DEF_REGULAR may be cleared later by a strong definition in
5914 a shared library. We account for that possibility below by
5915 storing information in the dyn_relocs field of the hash
5916 table entry. A similar situation occurs when creating
5917 shared libraries and symbol visibility changes render the
5920 If on the other hand, we are creating an executable, we
5921 may need to keep relocations for symbols satisfied by a
5922 dynamic library if we manage to avoid copy relocs for the
5925 if ((bfd_link_pic (info
)
5926 && (must_be_dyn_reloc (info
, r_type
)
5928 && (!SYMBOLIC_BIND (info
, h
)
5929 || h
->root
.type
== bfd_link_hash_defweak
5930 || !h
->def_regular
))))
5931 || (ELIMINATE_COPY_RELOCS
5932 && !bfd_link_pic (info
)
5934 && (h
->root
.type
== bfd_link_hash_defweak
5935 || !h
->def_regular
))
5936 || (!bfd_link_pic (info
)
5939 /* We must copy these reloc types into the output file.
5940 Create a reloc section in dynobj and make room for
5944 sreloc
= _bfd_elf_make_dynamic_reloc_section
5945 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5951 /* If this is a global symbol, we count the number of
5952 relocations we need for this symbol. */
5955 struct elf_dyn_relocs
*p
;
5956 struct elf_dyn_relocs
**head
;
5958 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5960 if (p
== NULL
|| p
->sec
!= sec
)
5962 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5972 if (!must_be_dyn_reloc (info
, r_type
))
5977 /* Track dynamic relocs needed for local syms too.
5978 We really need local syms available to do this
5980 struct ppc_dyn_relocs
*p
;
5981 struct ppc_dyn_relocs
**head
;
5982 bfd_boolean is_ifunc
;
5985 Elf_Internal_Sym
*isym
;
5987 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5992 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5996 vpp
= &elf_section_data (s
)->local_dynrel
;
5997 head
= (struct ppc_dyn_relocs
**) vpp
;
5998 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6000 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6002 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6004 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6010 p
->ifunc
= is_ifunc
;
6026 /* Merge backend specific data from an object file to the output
6027 object file when linking. */
6030 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6032 bfd
*obfd
= info
->output_bfd
;
6033 unsigned long iflags
, oflags
;
6035 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6038 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6041 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6044 iflags
= elf_elfheader (ibfd
)->e_flags
;
6045 oflags
= elf_elfheader (obfd
)->e_flags
;
6047 if (iflags
& ~EF_PPC64_ABI
)
6050 /* xgettext:c-format */
6051 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6052 bfd_set_error (bfd_error_bad_value
);
6055 else if (iflags
!= oflags
&& iflags
!= 0)
6058 /* xgettext:c-format */
6059 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6060 ibfd
, iflags
, oflags
);
6061 bfd_set_error (bfd_error_bad_value
);
6065 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6067 /* Merge Tag_compatibility attributes and any common GNU ones. */
6068 _bfd_elf_merge_object_attributes (ibfd
, info
);
6074 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6076 /* Print normal ELF private data. */
6077 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6079 if (elf_elfheader (abfd
)->e_flags
!= 0)
6083 fprintf (file
, _("private flags = 0x%lx:"),
6084 elf_elfheader (abfd
)->e_flags
);
6086 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6087 fprintf (file
, _(" [abiv%ld]"),
6088 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6095 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6096 of the code entry point, and its section, which must be in the same
6097 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6100 opd_entry_value (asection
*opd_sec
,
6102 asection
**code_sec
,
6104 bfd_boolean in_code_sec
)
6106 bfd
*opd_bfd
= opd_sec
->owner
;
6107 Elf_Internal_Rela
*relocs
;
6108 Elf_Internal_Rela
*lo
, *hi
, *look
;
6111 /* No relocs implies we are linking a --just-symbols object, or looking
6112 at a final linked executable with addr2line or somesuch. */
6113 if (opd_sec
->reloc_count
== 0)
6115 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6117 if (contents
== NULL
)
6119 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6120 return (bfd_vma
) -1;
6121 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6124 /* PR 17512: file: 64b9dfbb. */
6125 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6126 return (bfd_vma
) -1;
6128 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6129 if (code_sec
!= NULL
)
6131 asection
*sec
, *likely
= NULL
;
6137 && val
< sec
->vma
+ sec
->size
)
6143 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6145 && (sec
->flags
& SEC_LOAD
) != 0
6146 && (sec
->flags
& SEC_ALLOC
) != 0)
6151 if (code_off
!= NULL
)
6152 *code_off
= val
- likely
->vma
;
6158 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6160 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6162 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6163 /* PR 17512: file: df8e1fd6. */
6165 return (bfd_vma
) -1;
6167 /* Go find the opd reloc at the sym address. */
6169 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6173 look
= lo
+ (hi
- lo
) / 2;
6174 if (look
->r_offset
< offset
)
6176 else if (look
->r_offset
> offset
)
6180 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6182 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6183 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6185 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6186 asection
*sec
= NULL
;
6188 if (symndx
>= symtab_hdr
->sh_info
6189 && elf_sym_hashes (opd_bfd
) != NULL
)
6191 struct elf_link_hash_entry
**sym_hashes
;
6192 struct elf_link_hash_entry
*rh
;
6194 sym_hashes
= elf_sym_hashes (opd_bfd
);
6195 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6198 rh
= elf_follow_link (rh
);
6199 if (rh
->root
.type
!= bfd_link_hash_defined
6200 && rh
->root
.type
!= bfd_link_hash_defweak
)
6202 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6204 val
= rh
->root
.u
.def
.value
;
6205 sec
= rh
->root
.u
.def
.section
;
6212 Elf_Internal_Sym
*sym
;
6214 if (symndx
< symtab_hdr
->sh_info
)
6216 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6219 size_t symcnt
= symtab_hdr
->sh_info
;
6220 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6225 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6231 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6237 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6240 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6241 val
= sym
->st_value
;
6244 val
+= look
->r_addend
;
6245 if (code_off
!= NULL
)
6247 if (code_sec
!= NULL
)
6249 if (in_code_sec
&& *code_sec
!= sec
)
6254 if (sec
->output_section
!= NULL
)
6255 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6264 /* If the ELF symbol SYM might be a function in SEC, return the
6265 function size and set *CODE_OFF to the function's entry point,
6266 otherwise return zero. */
6268 static bfd_size_type
6269 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6274 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6275 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6279 if (!(sym
->flags
& BSF_SYNTHETIC
))
6280 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6282 if (strcmp (sym
->section
->name
, ".opd") == 0)
6284 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6285 bfd_vma symval
= sym
->value
;
6288 && opd
->adjust
!= NULL
6289 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6291 /* opd_entry_value will use cached relocs that have been
6292 adjusted, but with raw symbols. That means both local
6293 and global symbols need adjusting. */
6294 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6300 if (opd_entry_value (sym
->section
, symval
,
6301 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6303 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6304 symbol. This size has nothing to do with the code size of the
6305 function, which is what we're supposed to return, but the
6306 code size isn't available without looking up the dot-sym.
6307 However, doing that would be a waste of time particularly
6308 since elf_find_function will look at the dot-sym anyway.
6309 Now, elf_find_function will keep the largest size of any
6310 function sym found at the code address of interest, so return
6311 1 here to avoid it incorrectly caching a larger function size
6312 for a small function. This does mean we return the wrong
6313 size for a new-ABI function of size 24, but all that does is
6314 disable caching for such functions. */
6320 if (sym
->section
!= sec
)
6322 *code_off
= sym
->value
;
6329 /* Return true if symbol is a strong function defined in an ELFv2
6330 object with st_other localentry bits of zero, ie. its local entry
6331 point coincides with its global entry point. */
6334 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6337 && h
->type
== STT_FUNC
6338 && h
->root
.type
== bfd_link_hash_defined
6339 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6340 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6341 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6342 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6345 /* Return true if symbol is defined in a regular object file. */
6348 is_static_defined (struct elf_link_hash_entry
*h
)
6350 return ((h
->root
.type
== bfd_link_hash_defined
6351 || h
->root
.type
== bfd_link_hash_defweak
)
6352 && h
->root
.u
.def
.section
!= NULL
6353 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6356 /* If FDH is a function descriptor symbol, return the associated code
6357 entry symbol if it is defined. Return NULL otherwise. */
6359 static struct ppc_link_hash_entry
*
6360 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6362 if (fdh
->is_func_descriptor
)
6364 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6365 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6366 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6372 /* If FH is a function code entry symbol, return the associated
6373 function descriptor symbol if it is defined. Return NULL otherwise. */
6375 static struct ppc_link_hash_entry
*
6376 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6379 && fh
->oh
->is_func_descriptor
)
6381 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6382 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6383 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6389 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6391 /* Garbage collect sections, after first dealing with dot-symbols. */
6394 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6396 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6398 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6400 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6401 htab
->need_func_desc_adj
= 0;
6403 return bfd_elf_gc_sections (abfd
, info
);
6406 /* Mark all our entry sym sections, both opd and code section. */
6409 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6411 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6412 struct bfd_sym_chain
*sym
;
6417 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6419 struct ppc_link_hash_entry
*eh
, *fh
;
6422 eh
= (struct ppc_link_hash_entry
*)
6423 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6426 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6427 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6430 fh
= defined_code_entry (eh
);
6433 sec
= fh
->elf
.root
.u
.def
.section
;
6434 sec
->flags
|= SEC_KEEP
;
6436 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6437 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6438 eh
->elf
.root
.u
.def
.value
,
6439 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6440 sec
->flags
|= SEC_KEEP
;
6442 sec
= eh
->elf
.root
.u
.def
.section
;
6443 sec
->flags
|= SEC_KEEP
;
6447 /* Mark sections containing dynamically referenced symbols. When
6448 building shared libraries, we must assume that any visible symbol is
6452 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6454 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6455 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6456 struct ppc_link_hash_entry
*fdh
;
6457 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6459 /* Dynamic linking info is on the func descriptor sym. */
6460 fdh
= defined_func_desc (eh
);
6464 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6465 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6466 && (eh
->elf
.ref_dynamic
6467 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6468 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6469 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6470 && (!bfd_link_executable (info
)
6471 || info
->gc_keep_exported
6472 || info
->export_dynamic
6475 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6476 && (eh
->elf
.versioned
>= versioned
6477 || !bfd_hide_sym_by_version (info
->version_info
,
6478 eh
->elf
.root
.root
.string
)))))
6481 struct ppc_link_hash_entry
*fh
;
6483 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6485 /* Function descriptor syms cause the associated
6486 function code sym section to be marked. */
6487 fh
= defined_code_entry (eh
);
6490 code_sec
= fh
->elf
.root
.u
.def
.section
;
6491 code_sec
->flags
|= SEC_KEEP
;
6493 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6494 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6495 eh
->elf
.root
.u
.def
.value
,
6496 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6497 code_sec
->flags
|= SEC_KEEP
;
6503 /* Return the section that should be marked against GC for a given
6507 ppc64_elf_gc_mark_hook (asection
*sec
,
6508 struct bfd_link_info
*info
,
6509 Elf_Internal_Rela
*rel
,
6510 struct elf_link_hash_entry
*h
,
6511 Elf_Internal_Sym
*sym
)
6515 /* Syms return NULL if we're marking .opd, so we avoid marking all
6516 function sections, as all functions are referenced in .opd. */
6518 if (get_opd_info (sec
) != NULL
)
6523 enum elf_ppc64_reloc_type r_type
;
6524 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6526 r_type
= ELF64_R_TYPE (rel
->r_info
);
6529 case R_PPC64_GNU_VTINHERIT
:
6530 case R_PPC64_GNU_VTENTRY
:
6534 switch (h
->root
.type
)
6536 case bfd_link_hash_defined
:
6537 case bfd_link_hash_defweak
:
6538 eh
= (struct ppc_link_hash_entry
*) h
;
6539 fdh
= defined_func_desc (eh
);
6542 /* -mcall-aixdesc code references the dot-symbol on
6543 a call reloc. Mark the function descriptor too
6544 against garbage collection. */
6546 if (fdh
->elf
.is_weakalias
)
6547 weakdef (&fdh
->elf
)->mark
= 1;
6551 /* Function descriptor syms cause the associated
6552 function code sym section to be marked. */
6553 fh
= defined_code_entry (eh
);
6556 /* They also mark their opd section. */
6557 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6559 rsec
= fh
->elf
.root
.u
.def
.section
;
6561 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6562 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6563 eh
->elf
.root
.u
.def
.value
,
6564 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6565 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6567 rsec
= h
->root
.u
.def
.section
;
6570 case bfd_link_hash_common
:
6571 rsec
= h
->root
.u
.c
.p
->section
;
6575 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6581 struct _opd_sec_data
*opd
;
6583 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6584 opd
= get_opd_info (rsec
);
6585 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6589 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6596 /* The maximum size of .sfpr. */
6597 #define SFPR_MAX (218*4)
6599 struct sfpr_def_parms
6601 const char name
[12];
6602 unsigned char lo
, hi
;
6603 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6604 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6607 /* Auto-generate _save*, _rest* functions in .sfpr.
6608 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6612 sfpr_define (struct bfd_link_info
*info
,
6613 const struct sfpr_def_parms
*parm
,
6616 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6618 size_t len
= strlen (parm
->name
);
6619 bfd_boolean writing
= FALSE
;
6625 memcpy (sym
, parm
->name
, len
);
6628 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6630 struct ppc_link_hash_entry
*h
;
6632 sym
[len
+ 0] = i
/ 10 + '0';
6633 sym
[len
+ 1] = i
% 10 + '0';
6634 h
= (struct ppc_link_hash_entry
*)
6635 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6636 if (stub_sec
!= NULL
)
6639 && h
->elf
.root
.type
== bfd_link_hash_defined
6640 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6642 struct elf_link_hash_entry
*s
;
6644 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6645 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6648 if (s
->root
.type
== bfd_link_hash_new
6649 || (s
->root
.type
= bfd_link_hash_defined
6650 && s
->root
.u
.def
.section
== stub_sec
))
6652 s
->root
.type
= bfd_link_hash_defined
;
6653 s
->root
.u
.def
.section
= stub_sec
;
6654 s
->root
.u
.def
.value
= (stub_sec
->size
6655 + h
->elf
.root
.u
.def
.value
);
6658 s
->ref_regular_nonweak
= 1;
6659 s
->forced_local
= 1;
6661 s
->root
.linker_def
= 1;
6669 if (!h
->elf
.def_regular
)
6671 h
->elf
.root
.type
= bfd_link_hash_defined
;
6672 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6673 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6674 h
->elf
.type
= STT_FUNC
;
6675 h
->elf
.def_regular
= 1;
6677 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6679 if (htab
->sfpr
->contents
== NULL
)
6681 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6682 if (htab
->sfpr
->contents
== NULL
)
6689 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6691 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6693 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6694 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6702 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6704 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6709 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6711 p
= savegpr0 (abfd
, p
, r
);
6712 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6714 bfd_put_32 (abfd
, BLR
, p
);
6719 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6721 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6726 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6728 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6730 p
= restgpr0 (abfd
, p
, r
);
6731 bfd_put_32 (abfd
, MTLR_R0
, p
);
6735 p
= restgpr0 (abfd
, p
, 30);
6736 p
= restgpr0 (abfd
, p
, 31);
6738 bfd_put_32 (abfd
, BLR
, p
);
6743 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6745 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6750 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6752 p
= savegpr1 (abfd
, p
, r
);
6753 bfd_put_32 (abfd
, BLR
, p
);
6758 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6760 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6765 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6767 p
= restgpr1 (abfd
, p
, r
);
6768 bfd_put_32 (abfd
, BLR
, p
);
6773 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6775 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6780 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6782 p
= savefpr (abfd
, p
, r
);
6783 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6785 bfd_put_32 (abfd
, BLR
, p
);
6790 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6792 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6797 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6799 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6801 p
= restfpr (abfd
, p
, r
);
6802 bfd_put_32 (abfd
, MTLR_R0
, p
);
6806 p
= restfpr (abfd
, p
, 30);
6807 p
= restfpr (abfd
, p
, 31);
6809 bfd_put_32 (abfd
, BLR
, p
);
6814 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6816 p
= savefpr (abfd
, p
, r
);
6817 bfd_put_32 (abfd
, BLR
, p
);
6822 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6824 p
= restfpr (abfd
, p
, r
);
6825 bfd_put_32 (abfd
, BLR
, p
);
6830 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6832 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6834 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6839 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6841 p
= savevr (abfd
, p
, r
);
6842 bfd_put_32 (abfd
, BLR
, p
);
6847 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6849 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6851 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6856 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6858 p
= restvr (abfd
, p
, r
);
6859 bfd_put_32 (abfd
, BLR
, p
);
6863 /* Called via elf_link_hash_traverse to transfer dynamic linking
6864 information on function code symbol entries to their corresponding
6865 function descriptor symbol entries. */
6868 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6870 struct bfd_link_info
*info
;
6871 struct ppc_link_hash_table
*htab
;
6872 struct ppc_link_hash_entry
*fh
;
6873 struct ppc_link_hash_entry
*fdh
;
6874 bfd_boolean force_local
;
6876 fh
= (struct ppc_link_hash_entry
*) h
;
6877 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6883 if (fh
->elf
.root
.root
.string
[0] != '.'
6884 || fh
->elf
.root
.root
.string
[1] == '\0')
6888 htab
= ppc_hash_table (info
);
6892 /* Find the corresponding function descriptor symbol. */
6893 fdh
= lookup_fdh (fh
, htab
);
6895 /* Resolve undefined references to dot-symbols as the value
6896 in the function descriptor, if we have one in a regular object.
6897 This is to satisfy cases like ".quad .foo". Calls to functions
6898 in dynamic objects are handled elsewhere. */
6899 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
6900 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6901 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
6902 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6903 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6904 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6905 fdh
->elf
.root
.u
.def
.value
,
6906 &fh
->elf
.root
.u
.def
.section
,
6907 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6909 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6910 fh
->elf
.forced_local
= 1;
6911 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6912 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6915 if (!fh
->elf
.dynamic
)
6917 struct plt_entry
*ent
;
6919 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6920 if (ent
->plt
.refcount
> 0)
6926 /* Create a descriptor as undefined if necessary. */
6928 && !bfd_link_executable (info
)
6929 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6930 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6932 fdh
= make_fdh (info
, fh
);
6937 /* We can't support overriding of symbols on a fake descriptor. */
6940 && (fh
->elf
.root
.type
== bfd_link_hash_defined
6941 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
6942 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6944 /* Transfer dynamic linking information to the function descriptor. */
6947 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6948 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6949 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6950 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6951 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
6952 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
6953 || fh
->elf
.type
== STT_FUNC
6954 || fh
->elf
.type
== STT_GNU_IFUNC
);
6955 move_plt_plist (fh
, fdh
);
6957 if (!fdh
->elf
.forced_local
6958 && fh
->elf
.dynindx
!= -1)
6959 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6963 /* Now that the info is on the function descriptor, clear the
6964 function code sym info. Any function code syms for which we
6965 don't have a definition in a regular file, we force local.
6966 This prevents a shared library from exporting syms that have
6967 been imported from another library. Function code syms that
6968 are really in the library we must leave global to prevent the
6969 linker dragging in a definition from a static library. */
6970 force_local
= (!fh
->elf
.def_regular
6972 || !fdh
->elf
.def_regular
6973 || fdh
->elf
.forced_local
);
6974 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6979 static const struct sfpr_def_parms save_res_funcs
[] =
6981 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6982 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6983 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6984 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6985 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6986 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6987 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6988 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6989 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6990 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6991 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6992 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6995 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6996 this hook to a) provide some gcc support functions, and b) transfer
6997 dynamic linking information gathered so far on function code symbol
6998 entries, to their corresponding function descriptor symbol entries. */
7001 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7002 struct bfd_link_info
*info
)
7004 struct ppc_link_hash_table
*htab
;
7006 htab
= ppc_hash_table (info
);
7010 /* Provide any missing _save* and _rest* functions. */
7011 if (htab
->sfpr
!= NULL
)
7015 htab
->sfpr
->size
= 0;
7016 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7017 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7019 if (htab
->sfpr
->size
== 0)
7020 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7023 if (bfd_link_relocatable (info
))
7026 if (htab
->elf
.hgot
!= NULL
)
7028 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7029 /* Make .TOC. defined so as to prevent it being made dynamic.
7030 The wrong value here is fixed later in ppc64_elf_set_toc. */
7031 if (!htab
->elf
.hgot
->def_regular
7032 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7034 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7035 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7036 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7037 htab
->elf
.hgot
->def_regular
= 1;
7038 htab
->elf
.hgot
->root
.linker_def
= 1;
7040 htab
->elf
.hgot
->type
= STT_OBJECT
;
7041 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7045 if (htab
->need_func_desc_adj
)
7047 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7048 htab
->need_func_desc_adj
= 0;
7054 /* Find dynamic relocs for H that apply to read-only sections. */
7057 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7059 struct ppc_link_hash_entry
*eh
;
7060 struct elf_dyn_relocs
*p
;
7062 eh
= (struct ppc_link_hash_entry
*) h
;
7063 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7065 asection
*s
= p
->sec
->output_section
;
7067 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7073 /* Return true if we have dynamic relocs against H or any of its weak
7074 aliases, that apply to read-only sections. Cannot be used after
7075 size_dynamic_sections. */
7078 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7080 struct ppc_link_hash_entry
*eh
;
7082 eh
= (struct ppc_link_hash_entry
*) h
;
7085 if (readonly_dynrelocs (&eh
->elf
))
7087 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.u
.alias
;
7088 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7093 /* Return whether EH has pc-relative dynamic relocs. */
7096 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7098 struct elf_dyn_relocs
*p
;
7100 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7101 if (p
->pc_count
!= 0)
7106 /* Return true if a global entry stub will be created for H. Valid
7107 for ELFv2 before plt entries have been allocated. */
7110 global_entry_stub (struct elf_link_hash_entry
*h
)
7112 struct plt_entry
*pent
;
7114 if (!h
->pointer_equality_needed
7118 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7119 if (pent
->plt
.refcount
> 0
7120 && pent
->addend
== 0)
7126 /* Adjust a symbol defined by a dynamic object and referenced by a
7127 regular object. The current definition is in some section of the
7128 dynamic object, but we're not including those sections. We have to
7129 change the definition to something the rest of the link can
7133 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7134 struct elf_link_hash_entry
*h
)
7136 struct ppc_link_hash_table
*htab
;
7139 htab
= ppc_hash_table (info
);
7143 /* Deal with function syms. */
7144 if (h
->type
== STT_FUNC
7145 || h
->type
== STT_GNU_IFUNC
7148 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7149 || SYMBOL_CALLS_LOCAL (info
, h
)
7150 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7151 /* Discard dyn_relocs when non-pic if we've decided that a
7152 function symbol is local and not an ifunc. We keep dynamic
7153 relocs for ifuncs when local rather than always emitting a
7154 plt call stub for them and defining the symbol on the call
7155 stub. We can't do that for ELFv1 anyway (a function symbol
7156 is defined on a descriptor, not code) and it can be faster at
7157 run-time due to not needing to bounce through a stub. The
7158 dyn_relocs for ifuncs will be applied even in a static
7160 if (!bfd_link_pic (info
)
7161 && h
->type
!= STT_GNU_IFUNC
7163 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7165 /* Clear procedure linkage table information for any symbol that
7166 won't need a .plt entry. */
7167 struct plt_entry
*ent
;
7168 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7169 if (ent
->plt
.refcount
> 0)
7172 || (h
->type
!= STT_GNU_IFUNC
&& local
))
7174 h
->plt
.plist
= NULL
;
7176 h
->pointer_equality_needed
= 0;
7178 else if (abiversion (info
->output_bfd
) >= 2)
7180 /* Taking a function's address in a read/write section
7181 doesn't require us to define the function symbol in the
7182 executable on a global entry stub. A dynamic reloc can
7183 be used instead. The reason we prefer a few more dynamic
7184 relocs is that calling via a global entry stub costs a
7185 few more instructions, and pointer_equality_needed causes
7186 extra work in ld.so when resolving these symbols. */
7187 if (global_entry_stub (h
))
7189 if (!readonly_dynrelocs (h
))
7191 h
->pointer_equality_needed
= 0;
7192 /* If we haven't seen a branch reloc then we don't need
7195 h
->plt
.plist
= NULL
;
7197 else if (!bfd_link_pic (info
))
7198 /* We are going to be defining the function symbol on the
7199 plt stub, so no dyn_relocs needed when non-pic. */
7200 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7203 /* ELFv2 function symbols can't have copy relocs. */
7206 else if (!h
->needs_plt
7207 && !readonly_dynrelocs (h
))
7209 /* If we haven't seen a branch reloc then we don't need a
7211 h
->plt
.plist
= NULL
;
7212 h
->pointer_equality_needed
= 0;
7217 h
->plt
.plist
= NULL
;
7219 /* If this is a weak symbol, and there is a real definition, the
7220 processor independent code will have arranged for us to see the
7221 real definition first, and we can just use the same value. */
7222 if (h
->is_weakalias
)
7224 struct elf_link_hash_entry
*def
= weakdef (h
);
7225 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7226 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7227 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7228 if (ELIMINATE_COPY_RELOCS
)
7229 h
->non_got_ref
= def
->non_got_ref
;
7233 /* If we are creating a shared library, we must presume that the
7234 only references to the symbol are via the global offset table.
7235 For such cases we need not do anything here; the relocations will
7236 be handled correctly by relocate_section. */
7237 if (bfd_link_pic (info
))
7240 /* If there are no references to this symbol that do not use the
7241 GOT, we don't need to generate a copy reloc. */
7242 if (!h
->non_got_ref
)
7245 /* Don't generate a copy reloc for symbols defined in the executable. */
7246 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7248 /* If -z nocopyreloc was given, don't generate them either. */
7249 || info
->nocopyreloc
7251 /* If we didn't find any dynamic relocs in read-only sections, then
7252 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7253 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7255 /* Protected variables do not work with .dynbss. The copy in
7256 .dynbss won't be used by the shared library with the protected
7257 definition for the variable. Text relocations are preferable
7258 to an incorrect program. */
7259 || h
->protected_def
)
7262 if (h
->plt
.plist
!= NULL
)
7264 /* We should never get here, but unfortunately there are versions
7265 of gcc out there that improperly (for this ABI) put initialized
7266 function pointers, vtable refs and suchlike in read-only
7267 sections. Allow them to proceed, but warn that this might
7268 break at runtime. */
7269 info
->callbacks
->einfo
7270 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7271 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7272 h
->root
.root
.string
);
7275 /* This is a reference to a symbol defined by a dynamic object which
7276 is not a function. */
7278 /* We must allocate the symbol in our .dynbss section, which will
7279 become part of the .bss section of the executable. There will be
7280 an entry for this symbol in the .dynsym section. The dynamic
7281 object will contain position independent code, so all references
7282 from the dynamic object to this symbol will go through the global
7283 offset table. The dynamic linker will use the .dynsym entry to
7284 determine the address it must put in the global offset table, so
7285 both the dynamic object and the regular object will refer to the
7286 same memory location for the variable. */
7288 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7289 to copy the initial value out of the dynamic object and into the
7290 runtime process image. We need to remember the offset into the
7291 .rela.bss section we are going to use. */
7292 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7294 s
= htab
->elf
.sdynrelro
;
7295 srel
= htab
->elf
.sreldynrelro
;
7299 s
= htab
->elf
.sdynbss
;
7300 srel
= htab
->elf
.srelbss
;
7302 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7304 srel
->size
+= sizeof (Elf64_External_Rela
);
7308 /* We no longer want dyn_relocs. */
7309 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7310 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7313 /* If given a function descriptor symbol, hide both the function code
7314 sym and the descriptor. */
7316 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7317 struct elf_link_hash_entry
*h
,
7318 bfd_boolean force_local
)
7320 struct ppc_link_hash_entry
*eh
;
7321 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7323 eh
= (struct ppc_link_hash_entry
*) h
;
7324 if (eh
->is_func_descriptor
)
7326 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7331 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7334 /* We aren't supposed to use alloca in BFD because on
7335 systems which do not have alloca the version in libiberty
7336 calls xmalloc, which might cause the program to crash
7337 when it runs out of memory. This function doesn't have a
7338 return status, so there's no way to gracefully return an
7339 error. So cheat. We know that string[-1] can be safely
7340 accessed; It's either a string in an ELF string table,
7341 or allocated in an objalloc structure. */
7343 p
= eh
->elf
.root
.root
.string
- 1;
7346 fh
= (struct ppc_link_hash_entry
*)
7347 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7350 /* Unfortunately, if it so happens that the string we were
7351 looking for was allocated immediately before this string,
7352 then we overwrote the string terminator. That's the only
7353 reason the lookup should fail. */
7356 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7357 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7359 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7360 fh
= (struct ppc_link_hash_entry
*)
7361 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7370 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7375 get_sym_h (struct elf_link_hash_entry
**hp
,
7376 Elf_Internal_Sym
**symp
,
7378 unsigned char **tls_maskp
,
7379 Elf_Internal_Sym
**locsymsp
,
7380 unsigned long r_symndx
,
7383 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7385 if (r_symndx
>= symtab_hdr
->sh_info
)
7387 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7388 struct elf_link_hash_entry
*h
;
7390 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7391 h
= elf_follow_link (h
);
7399 if (symsecp
!= NULL
)
7401 asection
*symsec
= NULL
;
7402 if (h
->root
.type
== bfd_link_hash_defined
7403 || h
->root
.type
== bfd_link_hash_defweak
)
7404 symsec
= h
->root
.u
.def
.section
;
7408 if (tls_maskp
!= NULL
)
7410 struct ppc_link_hash_entry
*eh
;
7412 eh
= (struct ppc_link_hash_entry
*) h
;
7413 *tls_maskp
= &eh
->tls_mask
;
7418 Elf_Internal_Sym
*sym
;
7419 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7421 if (locsyms
== NULL
)
7423 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7424 if (locsyms
== NULL
)
7425 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7426 symtab_hdr
->sh_info
,
7427 0, NULL
, NULL
, NULL
);
7428 if (locsyms
== NULL
)
7430 *locsymsp
= locsyms
;
7432 sym
= locsyms
+ r_symndx
;
7440 if (symsecp
!= NULL
)
7441 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7443 if (tls_maskp
!= NULL
)
7445 struct got_entry
**lgot_ents
;
7446 unsigned char *tls_mask
;
7449 lgot_ents
= elf_local_got_ents (ibfd
);
7450 if (lgot_ents
!= NULL
)
7452 struct plt_entry
**local_plt
= (struct plt_entry
**)
7453 (lgot_ents
+ symtab_hdr
->sh_info
);
7454 unsigned char *lgot_masks
= (unsigned char *)
7455 (local_plt
+ symtab_hdr
->sh_info
);
7456 tls_mask
= &lgot_masks
[r_symndx
];
7458 *tls_maskp
= tls_mask
;
7464 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7465 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7466 type suitable for optimization, and 1 otherwise. */
7469 get_tls_mask (unsigned char **tls_maskp
,
7470 unsigned long *toc_symndx
,
7471 bfd_vma
*toc_addend
,
7472 Elf_Internal_Sym
**locsymsp
,
7473 const Elf_Internal_Rela
*rel
,
7476 unsigned long r_symndx
;
7478 struct elf_link_hash_entry
*h
;
7479 Elf_Internal_Sym
*sym
;
7483 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7484 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7487 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7489 || ppc64_elf_section_data (sec
) == NULL
7490 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7493 /* Look inside a TOC section too. */
7496 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7497 off
= h
->root
.u
.def
.value
;
7500 off
= sym
->st_value
;
7501 off
+= rel
->r_addend
;
7502 BFD_ASSERT (off
% 8 == 0);
7503 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7504 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7505 if (toc_symndx
!= NULL
)
7506 *toc_symndx
= r_symndx
;
7507 if (toc_addend
!= NULL
)
7508 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7509 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7511 if ((h
== NULL
|| is_static_defined (h
))
7512 && (next_r
== -1 || next_r
== -2))
7517 /* Find (or create) an entry in the tocsave hash table. */
7519 static struct tocsave_entry
*
7520 tocsave_find (struct ppc_link_hash_table
*htab
,
7521 enum insert_option insert
,
7522 Elf_Internal_Sym
**local_syms
,
7523 const Elf_Internal_Rela
*irela
,
7526 unsigned long r_indx
;
7527 struct elf_link_hash_entry
*h
;
7528 Elf_Internal_Sym
*sym
;
7529 struct tocsave_entry ent
, *p
;
7531 struct tocsave_entry
**slot
;
7533 r_indx
= ELF64_R_SYM (irela
->r_info
);
7534 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7536 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7539 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7544 ent
.offset
= h
->root
.u
.def
.value
;
7546 ent
.offset
= sym
->st_value
;
7547 ent
.offset
+= irela
->r_addend
;
7549 hash
= tocsave_htab_hash (&ent
);
7550 slot
= ((struct tocsave_entry
**)
7551 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7557 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7566 /* Adjust all global syms defined in opd sections. In gcc generated
7567 code for the old ABI, these will already have been done. */
7570 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7572 struct ppc_link_hash_entry
*eh
;
7574 struct _opd_sec_data
*opd
;
7576 if (h
->root
.type
== bfd_link_hash_indirect
)
7579 if (h
->root
.type
!= bfd_link_hash_defined
7580 && h
->root
.type
!= bfd_link_hash_defweak
)
7583 eh
= (struct ppc_link_hash_entry
*) h
;
7584 if (eh
->adjust_done
)
7587 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7588 opd
= get_opd_info (sym_sec
);
7589 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7591 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7594 /* This entry has been deleted. */
7595 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7598 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7599 if (discarded_section (dsec
))
7601 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7605 eh
->elf
.root
.u
.def
.value
= 0;
7606 eh
->elf
.root
.u
.def
.section
= dsec
;
7609 eh
->elf
.root
.u
.def
.value
+= adjust
;
7610 eh
->adjust_done
= 1;
7615 /* Handles decrementing dynamic reloc counts for the reloc specified by
7616 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7617 have already been determined. */
7620 dec_dynrel_count (bfd_vma r_info
,
7622 struct bfd_link_info
*info
,
7623 Elf_Internal_Sym
**local_syms
,
7624 struct elf_link_hash_entry
*h
,
7625 Elf_Internal_Sym
*sym
)
7627 enum elf_ppc64_reloc_type r_type
;
7628 asection
*sym_sec
= NULL
;
7630 /* Can this reloc be dynamic? This switch, and later tests here
7631 should be kept in sync with the code in check_relocs. */
7632 r_type
= ELF64_R_TYPE (r_info
);
7638 case R_PPC64_TPREL16
:
7639 case R_PPC64_TPREL16_LO
:
7640 case R_PPC64_TPREL16_HI
:
7641 case R_PPC64_TPREL16_HA
:
7642 case R_PPC64_TPREL16_DS
:
7643 case R_PPC64_TPREL16_LO_DS
:
7644 case R_PPC64_TPREL16_HIGH
:
7645 case R_PPC64_TPREL16_HIGHA
:
7646 case R_PPC64_TPREL16_HIGHER
:
7647 case R_PPC64_TPREL16_HIGHERA
:
7648 case R_PPC64_TPREL16_HIGHEST
:
7649 case R_PPC64_TPREL16_HIGHESTA
:
7650 case R_PPC64_TPREL64
:
7651 case R_PPC64_DTPMOD64
:
7652 case R_PPC64_DTPREL64
:
7653 case R_PPC64_ADDR64
:
7657 case R_PPC64_ADDR14
:
7658 case R_PPC64_ADDR14_BRNTAKEN
:
7659 case R_PPC64_ADDR14_BRTAKEN
:
7660 case R_PPC64_ADDR16
:
7661 case R_PPC64_ADDR16_DS
:
7662 case R_PPC64_ADDR16_HA
:
7663 case R_PPC64_ADDR16_HI
:
7664 case R_PPC64_ADDR16_HIGH
:
7665 case R_PPC64_ADDR16_HIGHA
:
7666 case R_PPC64_ADDR16_HIGHER
:
7667 case R_PPC64_ADDR16_HIGHERA
:
7668 case R_PPC64_ADDR16_HIGHEST
:
7669 case R_PPC64_ADDR16_HIGHESTA
:
7670 case R_PPC64_ADDR16_LO
:
7671 case R_PPC64_ADDR16_LO_DS
:
7672 case R_PPC64_ADDR24
:
7673 case R_PPC64_ADDR32
:
7674 case R_PPC64_UADDR16
:
7675 case R_PPC64_UADDR32
:
7676 case R_PPC64_UADDR64
:
7681 if (local_syms
!= NULL
)
7683 unsigned long r_symndx
;
7684 bfd
*ibfd
= sec
->owner
;
7686 r_symndx
= ELF64_R_SYM (r_info
);
7687 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7691 if ((bfd_link_pic (info
)
7692 && (must_be_dyn_reloc (info
, r_type
)
7694 && (!SYMBOLIC_BIND (info
, h
)
7695 || h
->root
.type
== bfd_link_hash_defweak
7696 || !h
->def_regular
))))
7697 || (ELIMINATE_COPY_RELOCS
7698 && !bfd_link_pic (info
)
7700 && (h
->root
.type
== bfd_link_hash_defweak
7701 || !h
->def_regular
)))
7708 struct elf_dyn_relocs
*p
;
7709 struct elf_dyn_relocs
**pp
;
7710 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7712 /* elf_gc_sweep may have already removed all dyn relocs associated
7713 with local syms for a given section. Also, symbol flags are
7714 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7715 report a dynreloc miscount. */
7716 if (*pp
== NULL
&& info
->gc_sections
)
7719 while ((p
= *pp
) != NULL
)
7723 if (!must_be_dyn_reloc (info
, r_type
))
7735 struct ppc_dyn_relocs
*p
;
7736 struct ppc_dyn_relocs
**pp
;
7738 bfd_boolean is_ifunc
;
7740 if (local_syms
== NULL
)
7741 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7742 if (sym_sec
== NULL
)
7745 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7746 pp
= (struct ppc_dyn_relocs
**) vpp
;
7748 if (*pp
== NULL
&& info
->gc_sections
)
7751 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7752 while ((p
= *pp
) != NULL
)
7754 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7765 /* xgettext:c-format */
7766 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7768 bfd_set_error (bfd_error_bad_value
);
7772 /* Remove unused Official Procedure Descriptor entries. Currently we
7773 only remove those associated with functions in discarded link-once
7774 sections, or weakly defined functions that have been overridden. It
7775 would be possible to remove many more entries for statically linked
7779 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7782 bfd_boolean some_edited
= FALSE
;
7783 asection
*need_pad
= NULL
;
7784 struct ppc_link_hash_table
*htab
;
7786 htab
= ppc_hash_table (info
);
7790 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7793 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7794 Elf_Internal_Shdr
*symtab_hdr
;
7795 Elf_Internal_Sym
*local_syms
;
7796 struct _opd_sec_data
*opd
;
7797 bfd_boolean need_edit
, add_aux_fields
, broken
;
7798 bfd_size_type cnt_16b
= 0;
7800 if (!is_ppc64_elf (ibfd
))
7803 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7804 if (sec
== NULL
|| sec
->size
== 0)
7807 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7810 if (sec
->output_section
== bfd_abs_section_ptr
)
7813 /* Look through the section relocs. */
7814 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7818 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7820 /* Read the relocations. */
7821 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7823 if (relstart
== NULL
)
7826 /* First run through the relocs to check they are sane, and to
7827 determine whether we need to edit this opd section. */
7831 relend
= relstart
+ sec
->reloc_count
;
7832 for (rel
= relstart
; rel
< relend
; )
7834 enum elf_ppc64_reloc_type r_type
;
7835 unsigned long r_symndx
;
7837 struct elf_link_hash_entry
*h
;
7838 Elf_Internal_Sym
*sym
;
7841 /* .opd contains an array of 16 or 24 byte entries. We're
7842 only interested in the reloc pointing to a function entry
7844 offset
= rel
->r_offset
;
7845 if (rel
+ 1 == relend
7846 || rel
[1].r_offset
!= offset
+ 8)
7848 /* If someone messes with .opd alignment then after a
7849 "ld -r" we might have padding in the middle of .opd.
7850 Also, there's nothing to prevent someone putting
7851 something silly in .opd with the assembler. No .opd
7852 optimization for them! */
7855 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7860 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7861 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7864 /* xgettext:c-format */
7865 (_("%B: unexpected reloc type %u in .opd section"),
7871 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7872 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7876 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7878 const char *sym_name
;
7880 sym_name
= h
->root
.root
.string
;
7882 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7886 /* xgettext:c-format */
7887 (_("%B: undefined sym `%s' in .opd section"),
7893 /* opd entries are always for functions defined in the
7894 current input bfd. If the symbol isn't defined in the
7895 input bfd, then we won't be using the function in this
7896 bfd; It must be defined in a linkonce section in another
7897 bfd, or is weak. It's also possible that we are
7898 discarding the function due to a linker script /DISCARD/,
7899 which we test for via the output_section. */
7900 if (sym_sec
->owner
!= ibfd
7901 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7905 if (rel
+ 1 == relend
7906 || (rel
+ 2 < relend
7907 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7912 if (sec
->size
== offset
+ 24)
7917 if (sec
->size
== offset
+ 16)
7924 else if (rel
+ 1 < relend
7925 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7926 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7928 if (rel
[0].r_offset
== offset
+ 16)
7930 else if (rel
[0].r_offset
!= offset
+ 24)
7937 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7939 if (!broken
&& (need_edit
|| add_aux_fields
))
7941 Elf_Internal_Rela
*write_rel
;
7942 Elf_Internal_Shdr
*rel_hdr
;
7943 bfd_byte
*rptr
, *wptr
;
7944 bfd_byte
*new_contents
;
7947 new_contents
= NULL
;
7948 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7949 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7950 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7951 if (opd
->adjust
== NULL
)
7954 /* This seems a waste of time as input .opd sections are all
7955 zeros as generated by gcc, but I suppose there's no reason
7956 this will always be so. We might start putting something in
7957 the third word of .opd entries. */
7958 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7961 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7966 if (local_syms
!= NULL
7967 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7969 if (elf_section_data (sec
)->relocs
!= relstart
)
7973 sec
->contents
= loc
;
7974 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7977 elf_section_data (sec
)->relocs
= relstart
;
7979 new_contents
= sec
->contents
;
7982 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7983 if (new_contents
== NULL
)
7987 wptr
= new_contents
;
7988 rptr
= sec
->contents
;
7989 write_rel
= relstart
;
7990 for (rel
= relstart
; rel
< relend
; )
7992 unsigned long r_symndx
;
7994 struct elf_link_hash_entry
*h
;
7995 struct ppc_link_hash_entry
*fdh
= NULL
;
7996 Elf_Internal_Sym
*sym
;
7998 Elf_Internal_Rela
*next_rel
;
8001 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8002 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8007 if (next_rel
+ 1 == relend
8008 || (next_rel
+ 2 < relend
8009 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8012 /* See if the .opd entry is full 24 byte or
8013 16 byte (with fd_aux entry overlapped with next
8016 if (next_rel
== relend
)
8018 if (sec
->size
== rel
->r_offset
+ 16)
8021 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8025 && h
->root
.root
.string
[0] == '.')
8027 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8030 fdh
= ppc_follow_link (fdh
);
8031 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8032 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8037 skip
= (sym_sec
->owner
!= ibfd
8038 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8041 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8043 /* Arrange for the function descriptor sym
8045 fdh
->elf
.root
.u
.def
.value
= 0;
8046 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8048 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8050 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8055 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8059 if (++rel
== next_rel
)
8062 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8063 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8070 /* We'll be keeping this opd entry. */
8075 /* Redefine the function descriptor symbol to
8076 this location in the opd section. It is
8077 necessary to update the value here rather
8078 than using an array of adjustments as we do
8079 for local symbols, because various places
8080 in the generic ELF code use the value
8081 stored in u.def.value. */
8082 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8083 fdh
->adjust_done
= 1;
8086 /* Local syms are a bit tricky. We could
8087 tweak them as they can be cached, but
8088 we'd need to look through the local syms
8089 for the function descriptor sym which we
8090 don't have at the moment. So keep an
8091 array of adjustments. */
8092 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8093 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8096 memcpy (wptr
, rptr
, opd_ent_size
);
8097 wptr
+= opd_ent_size
;
8098 if (add_aux_fields
&& opd_ent_size
== 16)
8100 memset (wptr
, '\0', 8);
8104 /* We need to adjust any reloc offsets to point to the
8106 for ( ; rel
!= next_rel
; ++rel
)
8108 rel
->r_offset
+= adjust
;
8109 if (write_rel
!= rel
)
8110 memcpy (write_rel
, rel
, sizeof (*rel
));
8115 rptr
+= opd_ent_size
;
8118 sec
->size
= wptr
- new_contents
;
8119 sec
->reloc_count
= write_rel
- relstart
;
8122 free (sec
->contents
);
8123 sec
->contents
= new_contents
;
8126 /* Fudge the header size too, as this is used later in
8127 elf_bfd_final_link if we are emitting relocs. */
8128 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8129 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8132 else if (elf_section_data (sec
)->relocs
!= relstart
)
8135 if (local_syms
!= NULL
8136 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8138 if (!info
->keep_memory
)
8141 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8146 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8148 /* If we are doing a final link and the last .opd entry is just 16 byte
8149 long, add a 8 byte padding after it. */
8150 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8154 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8156 BFD_ASSERT (need_pad
->size
> 0);
8158 p
= bfd_malloc (need_pad
->size
+ 8);
8162 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8163 p
, 0, need_pad
->size
))
8166 need_pad
->contents
= p
;
8167 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8171 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8175 need_pad
->contents
= p
;
8178 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8179 need_pad
->size
+= 8;
8185 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8188 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8190 struct ppc_link_hash_table
*htab
;
8192 htab
= ppc_hash_table (info
);
8196 if (abiversion (info
->output_bfd
) == 1)
8199 if (htab
->params
->no_multi_toc
)
8200 htab
->do_multi_toc
= 0;
8201 else if (!htab
->do_multi_toc
)
8202 htab
->params
->no_multi_toc
= 1;
8204 /* Default to --no-plt-localentry, as this option can cause problems
8205 with symbol interposition. For example, glibc libpthread.so and
8206 libc.so duplicate many pthread symbols, with a fallback
8207 implementation in libc.so. In some cases the fallback does more
8208 work than the pthread implementation. __pthread_condattr_destroy
8209 is one such symbol: the libpthread.so implementation is
8210 localentry:0 while the libc.so implementation is localentry:8.
8211 An app that "cleverly" uses dlopen to only load necessary
8212 libraries at runtime may omit loading libpthread.so when not
8213 running multi-threaded, which then results in the libc.so
8214 fallback symbols being used and ld.so complaining. Now there
8215 are workarounds in ld (see non_zero_localentry) to detect the
8216 pthread situation, but that may not be the only case where
8217 --plt-localentry can cause trouble. */
8218 if (htab
->params
->plt_localentry0
< 0)
8219 htab
->params
->plt_localentry0
= 0;
8220 if (htab
->params
->plt_localentry0
8221 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8222 FALSE
, FALSE
, FALSE
) == NULL
)
8223 info
->callbacks
->einfo
8224 (_("%P: warning: --plt-localentry is especially dangerous without "
8225 "ld.so support to detect ABI violations.\n"));
8227 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8228 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8229 FALSE
, FALSE
, TRUE
));
8230 /* Move dynamic linking info to the function descriptor sym. */
8231 if (htab
->tls_get_addr
!= NULL
)
8232 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8233 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8234 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8235 FALSE
, FALSE
, TRUE
));
8236 if (htab
->params
->tls_get_addr_opt
)
8238 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8240 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8241 FALSE
, FALSE
, TRUE
);
8243 func_desc_adjust (opt
, info
);
8244 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8245 FALSE
, FALSE
, TRUE
);
8247 && (opt_fd
->root
.type
== bfd_link_hash_defined
8248 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8250 /* If glibc supports an optimized __tls_get_addr call stub,
8251 signalled by the presence of __tls_get_addr_opt, and we'll
8252 be calling __tls_get_addr via a plt call stub, then
8253 make __tls_get_addr point to __tls_get_addr_opt. */
8254 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8255 if (htab
->elf
.dynamic_sections_created
8257 && (tga_fd
->type
== STT_FUNC
8258 || tga_fd
->needs_plt
)
8259 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8260 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8262 struct plt_entry
*ent
;
8264 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8265 if (ent
->plt
.refcount
> 0)
8269 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8270 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8271 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8273 if (opt_fd
->dynindx
!= -1)
8275 /* Use __tls_get_addr_opt in dynamic relocations. */
8276 opt_fd
->dynindx
= -1;
8277 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8278 opt_fd
->dynstr_index
);
8279 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8282 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8283 tga
= &htab
->tls_get_addr
->elf
;
8284 if (opt
!= NULL
&& tga
!= NULL
)
8286 tga
->root
.type
= bfd_link_hash_indirect
;
8287 tga
->root
.u
.i
.link
= &opt
->root
;
8288 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8290 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8292 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8294 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8295 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8296 if (htab
->tls_get_addr
!= NULL
)
8298 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8299 htab
->tls_get_addr
->is_func
= 1;
8304 else if (htab
->params
->tls_get_addr_opt
< 0)
8305 htab
->params
->tls_get_addr_opt
= 0;
8307 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8310 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8314 branch_reloc_hash_match (const bfd
*ibfd
,
8315 const Elf_Internal_Rela
*rel
,
8316 const struct ppc_link_hash_entry
*hash1
,
8317 const struct ppc_link_hash_entry
*hash2
)
8319 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8320 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8321 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8323 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8325 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8326 struct elf_link_hash_entry
*h
;
8328 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8329 h
= elf_follow_link (h
);
8330 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8336 /* Run through all the TLS relocs looking for optimization
8337 opportunities. The linker has been hacked (see ppc64elf.em) to do
8338 a preliminary section layout so that we know the TLS segment
8339 offsets. We can't optimize earlier because some optimizations need
8340 to know the tp offset, and we need to optimize before allocating
8341 dynamic relocations. */
8344 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8348 struct ppc_link_hash_table
*htab
;
8349 unsigned char *toc_ref
;
8352 if (!bfd_link_executable (info
))
8355 htab
= ppc_hash_table (info
);
8359 /* Make two passes over the relocs. On the first pass, mark toc
8360 entries involved with tls relocs, and check that tls relocs
8361 involved in setting up a tls_get_addr call are indeed followed by
8362 such a call. If they are not, we can't do any tls optimization.
8363 On the second pass twiddle tls_mask flags to notify
8364 relocate_section that optimization can be done, and adjust got
8365 and plt refcounts. */
8367 for (pass
= 0; pass
< 2; ++pass
)
8368 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8370 Elf_Internal_Sym
*locsyms
= NULL
;
8371 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8373 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8374 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8376 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8377 bfd_boolean found_tls_get_addr_arg
= 0;
8379 /* Read the relocations. */
8380 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8382 if (relstart
== NULL
)
8388 relend
= relstart
+ sec
->reloc_count
;
8389 for (rel
= relstart
; rel
< relend
; rel
++)
8391 enum elf_ppc64_reloc_type r_type
;
8392 unsigned long r_symndx
;
8393 struct elf_link_hash_entry
*h
;
8394 Elf_Internal_Sym
*sym
;
8396 unsigned char *tls_mask
;
8397 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8399 bfd_boolean ok_tprel
, is_local
;
8400 long toc_ref_index
= 0;
8401 int expecting_tls_get_addr
= 0;
8402 bfd_boolean ret
= FALSE
;
8404 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8405 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8409 if (elf_section_data (sec
)->relocs
!= relstart
)
8411 if (toc_ref
!= NULL
)
8414 && (elf_symtab_hdr (ibfd
).contents
8415 != (unsigned char *) locsyms
))
8422 if (h
->root
.type
== bfd_link_hash_defined
8423 || h
->root
.type
== bfd_link_hash_defweak
)
8424 value
= h
->root
.u
.def
.value
;
8425 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8429 found_tls_get_addr_arg
= 0;
8434 /* Symbols referenced by TLS relocs must be of type
8435 STT_TLS. So no need for .opd local sym adjust. */
8436 value
= sym
->st_value
;
8445 && h
->root
.type
== bfd_link_hash_undefweak
)
8447 else if (sym_sec
!= NULL
8448 && sym_sec
->output_section
!= NULL
)
8450 value
+= sym_sec
->output_offset
;
8451 value
+= sym_sec
->output_section
->vma
;
8452 value
-= htab
->elf
.tls_sec
->vma
;
8453 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8454 < (bfd_vma
) 1 << 32);
8458 r_type
= ELF64_R_TYPE (rel
->r_info
);
8459 /* If this section has old-style __tls_get_addr calls
8460 without marker relocs, then check that each
8461 __tls_get_addr call reloc is preceded by a reloc
8462 that conceivably belongs to the __tls_get_addr arg
8463 setup insn. If we don't find matching arg setup
8464 relocs, don't do any tls optimization. */
8466 && sec
->has_tls_get_addr_call
8468 && (h
== &htab
->tls_get_addr
->elf
8469 || h
== &htab
->tls_get_addr_fd
->elf
)
8470 && !found_tls_get_addr_arg
8471 && is_branch_reloc (r_type
))
8473 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8474 "TLS optimization disabled\n"),
8475 ibfd
, sec
, rel
->r_offset
);
8480 found_tls_get_addr_arg
= 0;
8483 case R_PPC64_GOT_TLSLD16
:
8484 case R_PPC64_GOT_TLSLD16_LO
:
8485 expecting_tls_get_addr
= 1;
8486 found_tls_get_addr_arg
= 1;
8489 case R_PPC64_GOT_TLSLD16_HI
:
8490 case R_PPC64_GOT_TLSLD16_HA
:
8491 /* These relocs should never be against a symbol
8492 defined in a shared lib. Leave them alone if
8493 that turns out to be the case. */
8500 tls_type
= TLS_TLS
| TLS_LD
;
8503 case R_PPC64_GOT_TLSGD16
:
8504 case R_PPC64_GOT_TLSGD16_LO
:
8505 expecting_tls_get_addr
= 1;
8506 found_tls_get_addr_arg
= 1;
8509 case R_PPC64_GOT_TLSGD16_HI
:
8510 case R_PPC64_GOT_TLSGD16_HA
:
8516 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8518 tls_type
= TLS_TLS
| TLS_GD
;
8521 case R_PPC64_GOT_TPREL16_DS
:
8522 case R_PPC64_GOT_TPREL16_LO_DS
:
8523 case R_PPC64_GOT_TPREL16_HI
:
8524 case R_PPC64_GOT_TPREL16_HA
:
8529 tls_clear
= TLS_TPREL
;
8530 tls_type
= TLS_TLS
| TLS_TPREL
;
8537 found_tls_get_addr_arg
= 1;
8542 case R_PPC64_TOC16_LO
:
8543 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8546 /* Mark this toc entry as referenced by a TLS
8547 code sequence. We can do that now in the
8548 case of R_PPC64_TLS, and after checking for
8549 tls_get_addr for the TOC16 relocs. */
8550 if (toc_ref
== NULL
)
8551 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8552 if (toc_ref
== NULL
)
8556 value
= h
->root
.u
.def
.value
;
8558 value
= sym
->st_value
;
8559 value
+= rel
->r_addend
;
8562 BFD_ASSERT (value
< toc
->size
8563 && toc
->output_offset
% 8 == 0);
8564 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8565 if (r_type
== R_PPC64_TLS
8566 || r_type
== R_PPC64_TLSGD
8567 || r_type
== R_PPC64_TLSLD
)
8569 toc_ref
[toc_ref_index
] = 1;
8573 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8578 expecting_tls_get_addr
= 2;
8581 case R_PPC64_TPREL64
:
8585 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8590 tls_set
= TLS_EXPLICIT
;
8591 tls_clear
= TLS_TPREL
;
8596 case R_PPC64_DTPMOD64
:
8600 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8602 if (rel
+ 1 < relend
8604 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8605 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8609 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8612 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8621 tls_set
= TLS_EXPLICIT
;
8632 if (!expecting_tls_get_addr
8633 || !sec
->has_tls_get_addr_call
)
8636 if (rel
+ 1 < relend
8637 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8639 htab
->tls_get_addr_fd
))
8641 if (expecting_tls_get_addr
== 2)
8643 /* Check for toc tls entries. */
8644 unsigned char *toc_tls
;
8647 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8652 if (toc_tls
!= NULL
)
8654 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8655 found_tls_get_addr_arg
= 1;
8657 toc_ref
[toc_ref_index
] = 1;
8663 if (expecting_tls_get_addr
!= 1)
8666 /* Uh oh, we didn't find the expected call. We
8667 could just mark this symbol to exclude it
8668 from tls optimization but it's safer to skip
8669 the entire optimization. */
8670 /* xgettext:c-format */
8671 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8672 "TLS optimization disabled\n"),
8673 ibfd
, sec
, rel
->r_offset
);
8678 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8680 struct plt_entry
*ent
;
8681 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8684 if (ent
->addend
== 0)
8686 if (ent
->plt
.refcount
> 0)
8688 ent
->plt
.refcount
-= 1;
8689 expecting_tls_get_addr
= 0;
8695 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8697 struct plt_entry
*ent
;
8698 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8701 if (ent
->addend
== 0)
8703 if (ent
->plt
.refcount
> 0)
8704 ent
->plt
.refcount
-= 1;
8712 if ((tls_set
& TLS_EXPLICIT
) == 0)
8714 struct got_entry
*ent
;
8716 /* Adjust got entry for this reloc. */
8720 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8722 for (; ent
!= NULL
; ent
= ent
->next
)
8723 if (ent
->addend
== rel
->r_addend
8724 && ent
->owner
== ibfd
8725 && ent
->tls_type
== tls_type
)
8732 /* We managed to get rid of a got entry. */
8733 if (ent
->got
.refcount
> 0)
8734 ent
->got
.refcount
-= 1;
8739 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8740 we'll lose one or two dyn relocs. */
8741 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8745 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8747 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8753 *tls_mask
|= tls_set
;
8754 *tls_mask
&= ~tls_clear
;
8757 if (elf_section_data (sec
)->relocs
!= relstart
)
8762 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8764 if (!info
->keep_memory
)
8767 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8771 if (toc_ref
!= NULL
)
8773 htab
->do_tls_opt
= 1;
8777 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8778 the values of any global symbols in a toc section that has been
8779 edited. Globals in toc sections should be a rarity, so this function
8780 sets a flag if any are found in toc sections other than the one just
8781 edited, so that further hash table traversals can be avoided. */
8783 struct adjust_toc_info
8786 unsigned long *skip
;
8787 bfd_boolean global_toc_syms
;
8790 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8793 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8795 struct ppc_link_hash_entry
*eh
;
8796 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8799 if (h
->root
.type
!= bfd_link_hash_defined
8800 && h
->root
.type
!= bfd_link_hash_defweak
)
8803 eh
= (struct ppc_link_hash_entry
*) h
;
8804 if (eh
->adjust_done
)
8807 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8809 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8810 i
= toc_inf
->toc
->rawsize
>> 3;
8812 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8814 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8817 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8820 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8821 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8824 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8825 eh
->adjust_done
= 1;
8827 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8828 toc_inf
->global_toc_syms
= TRUE
;
8833 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8834 on a _LO variety toc/got reloc. */
8837 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8839 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8840 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8841 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8842 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8843 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8844 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8845 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8846 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8847 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8848 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8849 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8850 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8851 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8852 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8853 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8854 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8855 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8856 /* Exclude lfqu by testing reloc. If relocs are ever
8857 defined for the reduced D field in psq_lu then those
8858 will need testing too. */
8859 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8860 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8862 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8863 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8864 /* Exclude stfqu. psq_stu as above for psq_lu. */
8865 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8866 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8867 && (insn
& 1) == 0));
8870 /* Examine all relocs referencing .toc sections in order to remove
8871 unused .toc entries. */
8874 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8877 struct adjust_toc_info toc_inf
;
8878 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8880 htab
->do_toc_opt
= 1;
8881 toc_inf
.global_toc_syms
= TRUE
;
8882 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8884 asection
*toc
, *sec
;
8885 Elf_Internal_Shdr
*symtab_hdr
;
8886 Elf_Internal_Sym
*local_syms
;
8887 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8888 unsigned long *skip
, *drop
;
8889 unsigned char *used
;
8890 unsigned char *keep
, last
, some_unused
;
8892 if (!is_ppc64_elf (ibfd
))
8895 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8898 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8899 || discarded_section (toc
))
8904 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8906 /* Look at sections dropped from the final link. */
8909 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8911 if (sec
->reloc_count
== 0
8912 || !discarded_section (sec
)
8913 || get_opd_info (sec
)
8914 || (sec
->flags
& SEC_ALLOC
) == 0
8915 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8918 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8919 if (relstart
== NULL
)
8922 /* Run through the relocs to see which toc entries might be
8924 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8926 enum elf_ppc64_reloc_type r_type
;
8927 unsigned long r_symndx
;
8929 struct elf_link_hash_entry
*h
;
8930 Elf_Internal_Sym
*sym
;
8933 r_type
= ELF64_R_TYPE (rel
->r_info
);
8940 case R_PPC64_TOC16_LO
:
8941 case R_PPC64_TOC16_HI
:
8942 case R_PPC64_TOC16_HA
:
8943 case R_PPC64_TOC16_DS
:
8944 case R_PPC64_TOC16_LO_DS
:
8948 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8949 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8957 val
= h
->root
.u
.def
.value
;
8959 val
= sym
->st_value
;
8960 val
+= rel
->r_addend
;
8962 if (val
>= toc
->size
)
8965 /* Anything in the toc ought to be aligned to 8 bytes.
8966 If not, don't mark as unused. */
8972 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8977 skip
[val
>> 3] = ref_from_discarded
;
8980 if (elf_section_data (sec
)->relocs
!= relstart
)
8984 /* For largetoc loads of address constants, we can convert
8985 . addis rx,2,addr@got@ha
8986 . ld ry,addr@got@l(rx)
8988 . addis rx,2,addr@toc@ha
8989 . addi ry,rx,addr@toc@l
8990 when addr is within 2G of the toc pointer. This then means
8991 that the word storing "addr" in the toc is no longer needed. */
8993 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8994 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8995 && toc
->reloc_count
!= 0)
8997 /* Read toc relocs. */
8998 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9000 if (toc_relocs
== NULL
)
9003 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9005 enum elf_ppc64_reloc_type r_type
;
9006 unsigned long r_symndx
;
9008 struct elf_link_hash_entry
*h
;
9009 Elf_Internal_Sym
*sym
;
9012 r_type
= ELF64_R_TYPE (rel
->r_info
);
9013 if (r_type
!= R_PPC64_ADDR64
)
9016 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9017 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9022 || sym_sec
->output_section
== NULL
9023 || discarded_section (sym_sec
))
9026 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9031 if (h
->type
== STT_GNU_IFUNC
)
9033 val
= h
->root
.u
.def
.value
;
9037 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9039 val
= sym
->st_value
;
9041 val
+= rel
->r_addend
;
9042 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9044 /* We don't yet know the exact toc pointer value, but we
9045 know it will be somewhere in the toc section. Don't
9046 optimize if the difference from any possible toc
9047 pointer is outside [ff..f80008000, 7fff7fff]. */
9048 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9049 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9052 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9053 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9058 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9063 skip
[rel
->r_offset
>> 3]
9064 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9071 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9075 if (local_syms
!= NULL
9076 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9080 && elf_section_data (sec
)->relocs
!= relstart
)
9082 if (toc_relocs
!= NULL
9083 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9090 /* Now check all kept sections that might reference the toc.
9091 Check the toc itself last. */
9092 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9095 sec
= (sec
== toc
? NULL
9096 : sec
->next
== NULL
? toc
9097 : sec
->next
== toc
&& toc
->next
? toc
->next
9102 if (sec
->reloc_count
== 0
9103 || discarded_section (sec
)
9104 || get_opd_info (sec
)
9105 || (sec
->flags
& SEC_ALLOC
) == 0
9106 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9109 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9111 if (relstart
== NULL
)
9117 /* Mark toc entries referenced as used. */
9121 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9123 enum elf_ppc64_reloc_type r_type
;
9124 unsigned long r_symndx
;
9126 struct elf_link_hash_entry
*h
;
9127 Elf_Internal_Sym
*sym
;
9129 enum {no_check
, check_lo
, check_ha
} insn_check
;
9131 r_type
= ELF64_R_TYPE (rel
->r_info
);
9135 insn_check
= no_check
;
9138 case R_PPC64_GOT_TLSLD16_HA
:
9139 case R_PPC64_GOT_TLSGD16_HA
:
9140 case R_PPC64_GOT_TPREL16_HA
:
9141 case R_PPC64_GOT_DTPREL16_HA
:
9142 case R_PPC64_GOT16_HA
:
9143 case R_PPC64_TOC16_HA
:
9144 insn_check
= check_ha
;
9147 case R_PPC64_GOT_TLSLD16_LO
:
9148 case R_PPC64_GOT_TLSGD16_LO
:
9149 case R_PPC64_GOT_TPREL16_LO_DS
:
9150 case R_PPC64_GOT_DTPREL16_LO_DS
:
9151 case R_PPC64_GOT16_LO
:
9152 case R_PPC64_GOT16_LO_DS
:
9153 case R_PPC64_TOC16_LO
:
9154 case R_PPC64_TOC16_LO_DS
:
9155 insn_check
= check_lo
;
9159 if (insn_check
!= no_check
)
9161 bfd_vma off
= rel
->r_offset
& ~3;
9162 unsigned char buf
[4];
9165 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9170 insn
= bfd_get_32 (ibfd
, buf
);
9171 if (insn_check
== check_lo
9172 ? !ok_lo_toc_insn (insn
, r_type
)
9173 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9174 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9178 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9179 sprintf (str
, "%#08x", insn
);
9180 info
->callbacks
->einfo
9181 /* xgettext:c-format */
9182 (_("%H: toc optimization is not supported for"
9183 " %s instruction.\n"),
9184 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9191 case R_PPC64_TOC16_LO
:
9192 case R_PPC64_TOC16_HI
:
9193 case R_PPC64_TOC16_HA
:
9194 case R_PPC64_TOC16_DS
:
9195 case R_PPC64_TOC16_LO_DS
:
9196 /* In case we're taking addresses of toc entries. */
9197 case R_PPC64_ADDR64
:
9204 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9205 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9216 val
= h
->root
.u
.def
.value
;
9218 val
= sym
->st_value
;
9219 val
+= rel
->r_addend
;
9221 if (val
>= toc
->size
)
9224 if ((skip
[val
>> 3] & can_optimize
) != 0)
9231 case R_PPC64_TOC16_HA
:
9234 case R_PPC64_TOC16_LO_DS
:
9235 off
= rel
->r_offset
;
9236 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9237 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9243 if ((opc
& (0x3f << 2)) == (58u << 2))
9248 /* Wrong sort of reloc, or not a ld. We may
9249 as well clear ref_from_discarded too. */
9256 /* For the toc section, we only mark as used if this
9257 entry itself isn't unused. */
9258 else if ((used
[rel
->r_offset
>> 3]
9259 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9262 /* Do all the relocs again, to catch reference
9271 if (elf_section_data (sec
)->relocs
!= relstart
)
9275 /* Merge the used and skip arrays. Assume that TOC
9276 doublewords not appearing as either used or unused belong
9277 to an entry more than one doubleword in size. */
9278 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9279 drop
< skip
+ (toc
->size
+ 7) / 8;
9284 *drop
&= ~ref_from_discarded
;
9285 if ((*drop
& can_optimize
) != 0)
9289 else if ((*drop
& ref_from_discarded
) != 0)
9292 last
= ref_from_discarded
;
9302 bfd_byte
*contents
, *src
;
9304 Elf_Internal_Sym
*sym
;
9305 bfd_boolean local_toc_syms
= FALSE
;
9307 /* Shuffle the toc contents, and at the same time convert the
9308 skip array from booleans into offsets. */
9309 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9312 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9314 for (src
= contents
, off
= 0, drop
= skip
;
9315 src
< contents
+ toc
->size
;
9318 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9323 memcpy (src
- off
, src
, 8);
9327 toc
->rawsize
= toc
->size
;
9328 toc
->size
= src
- contents
- off
;
9330 /* Adjust addends for relocs against the toc section sym,
9331 and optimize any accesses we can. */
9332 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9334 if (sec
->reloc_count
== 0
9335 || discarded_section (sec
))
9338 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9340 if (relstart
== NULL
)
9343 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9345 enum elf_ppc64_reloc_type r_type
;
9346 unsigned long r_symndx
;
9348 struct elf_link_hash_entry
*h
;
9351 r_type
= ELF64_R_TYPE (rel
->r_info
);
9358 case R_PPC64_TOC16_LO
:
9359 case R_PPC64_TOC16_HI
:
9360 case R_PPC64_TOC16_HA
:
9361 case R_PPC64_TOC16_DS
:
9362 case R_PPC64_TOC16_LO_DS
:
9363 case R_PPC64_ADDR64
:
9367 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9368 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9376 val
= h
->root
.u
.def
.value
;
9379 val
= sym
->st_value
;
9381 local_toc_syms
= TRUE
;
9384 val
+= rel
->r_addend
;
9386 if (val
> toc
->rawsize
)
9388 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9390 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9392 Elf_Internal_Rela
*tocrel
9393 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9394 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9398 case R_PPC64_TOC16_HA
:
9399 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9402 case R_PPC64_TOC16_LO_DS
:
9403 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9407 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9409 info
->callbacks
->einfo
9410 /* xgettext:c-format */
9411 (_("%H: %s references "
9412 "optimized away TOC entry\n"),
9413 ibfd
, sec
, rel
->r_offset
,
9414 ppc64_elf_howto_table
[r_type
]->name
);
9415 bfd_set_error (bfd_error_bad_value
);
9418 rel
->r_addend
= tocrel
->r_addend
;
9419 elf_section_data (sec
)->relocs
= relstart
;
9423 if (h
!= NULL
|| sym
->st_value
!= 0)
9426 rel
->r_addend
-= skip
[val
>> 3];
9427 elf_section_data (sec
)->relocs
= relstart
;
9430 if (elf_section_data (sec
)->relocs
!= relstart
)
9434 /* We shouldn't have local or global symbols defined in the TOC,
9435 but handle them anyway. */
9436 if (local_syms
!= NULL
)
9437 for (sym
= local_syms
;
9438 sym
< local_syms
+ symtab_hdr
->sh_info
;
9440 if (sym
->st_value
!= 0
9441 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9445 if (sym
->st_value
> toc
->rawsize
)
9446 i
= toc
->rawsize
>> 3;
9448 i
= sym
->st_value
>> 3;
9450 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9454 (_("%s defined on removed toc entry"),
9455 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9458 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9459 sym
->st_value
= (bfd_vma
) i
<< 3;
9462 sym
->st_value
-= skip
[i
];
9463 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9466 /* Adjust any global syms defined in this toc input section. */
9467 if (toc_inf
.global_toc_syms
)
9470 toc_inf
.skip
= skip
;
9471 toc_inf
.global_toc_syms
= FALSE
;
9472 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9476 if (toc
->reloc_count
!= 0)
9478 Elf_Internal_Shdr
*rel_hdr
;
9479 Elf_Internal_Rela
*wrel
;
9482 /* Remove unused toc relocs, and adjust those we keep. */
9483 if (toc_relocs
== NULL
)
9484 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9486 if (toc_relocs
== NULL
)
9490 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9491 if ((skip
[rel
->r_offset
>> 3]
9492 & (ref_from_discarded
| can_optimize
)) == 0)
9494 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9495 wrel
->r_info
= rel
->r_info
;
9496 wrel
->r_addend
= rel
->r_addend
;
9499 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9500 &local_syms
, NULL
, NULL
))
9503 elf_section_data (toc
)->relocs
= toc_relocs
;
9504 toc
->reloc_count
= wrel
- toc_relocs
;
9505 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9506 sz
= rel_hdr
->sh_entsize
;
9507 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9510 else if (toc_relocs
!= NULL
9511 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9514 if (local_syms
!= NULL
9515 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9517 if (!info
->keep_memory
)
9520 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9528 /* Return true iff input section I references the TOC using
9529 instructions limited to +/-32k offsets. */
9532 ppc64_elf_has_small_toc_reloc (asection
*i
)
9534 return (is_ppc64_elf (i
->owner
)
9535 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9538 /* Allocate space for one GOT entry. */
9541 allocate_got (struct elf_link_hash_entry
*h
,
9542 struct bfd_link_info
*info
,
9543 struct got_entry
*gent
)
9545 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9546 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9547 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9549 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9550 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9551 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9553 gent
->got
.offset
= got
->size
;
9554 got
->size
+= entsize
;
9556 if (h
->type
== STT_GNU_IFUNC
)
9558 htab
->elf
.irelplt
->size
+= rentsize
;
9559 htab
->got_reli_size
+= rentsize
;
9561 else if (((bfd_link_pic (info
)
9562 && !((gent
->tls_type
& TLS_TPREL
) != 0
9563 && bfd_link_executable (info
)
9564 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9565 || (htab
->elf
.dynamic_sections_created
9567 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9568 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9570 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9571 relgot
->size
+= rentsize
;
9575 /* This function merges got entries in the same toc group. */
9578 merge_got_entries (struct got_entry
**pent
)
9580 struct got_entry
*ent
, *ent2
;
9582 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9583 if (!ent
->is_indirect
)
9584 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9585 if (!ent2
->is_indirect
9586 && ent2
->addend
== ent
->addend
9587 && ent2
->tls_type
== ent
->tls_type
9588 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9590 ent2
->is_indirect
= TRUE
;
9591 ent2
->got
.ent
= ent
;
9595 /* If H is undefined, make it dynamic if that makes sense. */
9598 ensure_undef_dynamic (struct bfd_link_info
*info
,
9599 struct elf_link_hash_entry
*h
)
9601 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9603 if (htab
->dynamic_sections_created
9604 && ((info
->dynamic_undefined_weak
!= 0
9605 && h
->root
.type
== bfd_link_hash_undefweak
)
9606 || h
->root
.type
== bfd_link_hash_undefined
)
9609 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9610 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9614 /* Allocate space in .plt, .got and associated reloc sections for
9618 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9620 struct bfd_link_info
*info
;
9621 struct ppc_link_hash_table
*htab
;
9623 struct ppc_link_hash_entry
*eh
;
9624 struct got_entry
**pgent
, *gent
;
9626 if (h
->root
.type
== bfd_link_hash_indirect
)
9629 info
= (struct bfd_link_info
*) inf
;
9630 htab
= ppc_hash_table (info
);
9634 eh
= (struct ppc_link_hash_entry
*) h
;
9635 /* Run through the TLS GD got entries first if we're changing them
9637 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9638 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9639 if (gent
->got
.refcount
> 0
9640 && (gent
->tls_type
& TLS_GD
) != 0)
9642 /* This was a GD entry that has been converted to TPREL. If
9643 there happens to be a TPREL entry we can use that one. */
9644 struct got_entry
*ent
;
9645 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9646 if (ent
->got
.refcount
> 0
9647 && (ent
->tls_type
& TLS_TPREL
) != 0
9648 && ent
->addend
== gent
->addend
9649 && ent
->owner
== gent
->owner
)
9651 gent
->got
.refcount
= 0;
9655 /* If not, then we'll be using our own TPREL entry. */
9656 if (gent
->got
.refcount
!= 0)
9657 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9660 /* Remove any list entry that won't generate a word in the GOT before
9661 we call merge_got_entries. Otherwise we risk merging to empty
9663 pgent
= &h
->got
.glist
;
9664 while ((gent
= *pgent
) != NULL
)
9665 if (gent
->got
.refcount
> 0)
9667 if ((gent
->tls_type
& TLS_LD
) != 0
9670 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9671 *pgent
= gent
->next
;
9674 pgent
= &gent
->next
;
9677 *pgent
= gent
->next
;
9679 if (!htab
->do_multi_toc
)
9680 merge_got_entries (&h
->got
.glist
);
9682 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9683 if (!gent
->is_indirect
)
9685 /* Make sure this symbol is output as a dynamic symbol. */
9686 if (!ensure_undef_dynamic (info
, h
))
9689 if (!is_ppc64_elf (gent
->owner
))
9692 allocate_got (h
, info
, gent
);
9695 /* If no dynamic sections we can't have dynamic relocs, except for
9696 IFUNCs which are handled even in static executables. */
9697 if (!htab
->elf
.dynamic_sections_created
9698 && h
->type
!= STT_GNU_IFUNC
)
9699 eh
->dyn_relocs
= NULL
;
9701 /* Discard relocs on undefined symbols that must be local. */
9702 else if (h
->root
.type
== bfd_link_hash_undefined
9703 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9704 eh
->dyn_relocs
= NULL
;
9706 /* Also discard relocs on undefined weak syms with non-default
9707 visibility, or when dynamic_undefined_weak says so. */
9708 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9709 eh
->dyn_relocs
= NULL
;
9711 if (eh
->dyn_relocs
!= NULL
)
9713 struct elf_dyn_relocs
*p
, **pp
;
9715 /* In the shared -Bsymbolic case, discard space allocated for
9716 dynamic pc-relative relocs against symbols which turn out to
9717 be defined in regular objects. For the normal shared case,
9718 discard space for relocs that have become local due to symbol
9719 visibility changes. */
9721 if (bfd_link_pic (info
))
9723 /* Relocs that use pc_count are those that appear on a call
9724 insn, or certain REL relocs (see must_be_dyn_reloc) that
9725 can be generated via assembly. We want calls to
9726 protected symbols to resolve directly to the function
9727 rather than going via the plt. If people want function
9728 pointer comparisons to work as expected then they should
9729 avoid writing weird assembly. */
9730 if (SYMBOL_CALLS_LOCAL (info
, h
))
9732 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9734 p
->count
-= p
->pc_count
;
9743 if (eh
->dyn_relocs
!= NULL
)
9745 /* Make sure this symbol is output as a dynamic symbol. */
9746 if (!ensure_undef_dynamic (info
, h
))
9750 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
9752 /* For the non-pic case, discard space for relocs against
9753 symbols which turn out to need copy relocs or are not
9755 if (h
->dynamic_adjusted
9757 && !ELF_COMMON_DEF_P (h
))
9759 /* Make sure this symbol is output as a dynamic symbol. */
9760 if (!ensure_undef_dynamic (info
, h
))
9763 if (h
->dynindx
== -1)
9764 eh
->dyn_relocs
= NULL
;
9767 eh
->dyn_relocs
= NULL
;
9770 /* Finally, allocate space. */
9771 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9773 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9774 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9775 sreloc
= htab
->elf
.irelplt
;
9776 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9780 if ((htab
->elf
.dynamic_sections_created
9781 && h
->dynindx
!= -1)
9782 || h
->type
== STT_GNU_IFUNC
)
9784 struct plt_entry
*pent
;
9785 bfd_boolean doneone
= FALSE
;
9786 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9787 if (pent
->plt
.refcount
> 0)
9789 if (!htab
->elf
.dynamic_sections_created
9790 || h
->dynindx
== -1)
9793 pent
->plt
.offset
= s
->size
;
9794 s
->size
+= PLT_ENTRY_SIZE (htab
);
9795 s
= htab
->elf
.irelplt
;
9799 /* If this is the first .plt entry, make room for the special
9803 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9805 pent
->plt
.offset
= s
->size
;
9807 /* Make room for this entry. */
9808 s
->size
+= PLT_ENTRY_SIZE (htab
);
9810 /* Make room for the .glink code. */
9813 s
->size
+= GLINK_CALL_STUB_SIZE
;
9816 /* We need bigger stubs past index 32767. */
9817 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9824 /* We also need to make an entry in the .rela.plt section. */
9825 s
= htab
->elf
.srelplt
;
9827 s
->size
+= sizeof (Elf64_External_Rela
);
9831 pent
->plt
.offset
= (bfd_vma
) -1;
9834 h
->plt
.plist
= NULL
;
9840 h
->plt
.plist
= NULL
;
9847 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9848 to set up space for global entry stubs. These are put in glink,
9849 after the branch table. */
9852 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9854 struct bfd_link_info
*info
;
9855 struct ppc_link_hash_table
*htab
;
9856 struct plt_entry
*pent
;
9859 if (h
->root
.type
== bfd_link_hash_indirect
)
9862 if (!h
->pointer_equality_needed
)
9869 htab
= ppc_hash_table (info
);
9874 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9875 if (pent
->plt
.offset
!= (bfd_vma
) -1
9876 && pent
->addend
== 0)
9878 /* For ELFv2, if this symbol is not defined in a regular file
9879 and we are not generating a shared library or pie, then we
9880 need to define the symbol in the executable on a call stub.
9881 This is to avoid text relocations. */
9882 s
->size
= (s
->size
+ 15) & -16;
9883 h
->root
.type
= bfd_link_hash_defined
;
9884 h
->root
.u
.def
.section
= s
;
9885 h
->root
.u
.def
.value
= s
->size
;
9892 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9893 read-only sections. */
9896 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
9900 if (h
->root
.type
== bfd_link_hash_indirect
)
9903 sec
= readonly_dynrelocs (h
);
9906 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9908 info
->flags
|= DF_TEXTREL
;
9909 info
->callbacks
->minfo
9910 (_("%B: dynamic relocation in read-only section `%A'\n"),
9913 /* Not an error, just cut short the traversal. */
9919 /* Set the sizes of the dynamic sections. */
9922 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9923 struct bfd_link_info
*info
)
9925 struct ppc_link_hash_table
*htab
;
9930 struct got_entry
*first_tlsld
;
9932 htab
= ppc_hash_table (info
);
9936 dynobj
= htab
->elf
.dynobj
;
9940 if (htab
->elf
.dynamic_sections_created
)
9942 /* Set the contents of the .interp section to the interpreter. */
9943 if (bfd_link_executable (info
) && !info
->nointerp
)
9945 s
= bfd_get_linker_section (dynobj
, ".interp");
9948 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9949 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9953 /* Set up .got offsets for local syms, and space for local dynamic
9955 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9957 struct got_entry
**lgot_ents
;
9958 struct got_entry
**end_lgot_ents
;
9959 struct plt_entry
**local_plt
;
9960 struct plt_entry
**end_local_plt
;
9961 unsigned char *lgot_masks
;
9962 bfd_size_type locsymcount
;
9963 Elf_Internal_Shdr
*symtab_hdr
;
9965 if (!is_ppc64_elf (ibfd
))
9968 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9970 struct ppc_dyn_relocs
*p
;
9972 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9974 if (!bfd_is_abs_section (p
->sec
)
9975 && bfd_is_abs_section (p
->sec
->output_section
))
9977 /* Input section has been discarded, either because
9978 it is a copy of a linkonce section or due to
9979 linker script /DISCARD/, so we'll be discarding
9982 else if (p
->count
!= 0)
9984 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9986 srel
= htab
->elf
.irelplt
;
9987 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9988 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9989 info
->flags
|= DF_TEXTREL
;
9994 lgot_ents
= elf_local_got_ents (ibfd
);
9998 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9999 locsymcount
= symtab_hdr
->sh_info
;
10000 end_lgot_ents
= lgot_ents
+ locsymcount
;
10001 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10002 end_local_plt
= local_plt
+ locsymcount
;
10003 lgot_masks
= (unsigned char *) end_local_plt
;
10004 s
= ppc64_elf_tdata (ibfd
)->got
;
10005 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10007 struct got_entry
**pent
, *ent
;
10010 while ((ent
= *pent
) != NULL
)
10011 if (ent
->got
.refcount
> 0)
10013 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10015 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10020 unsigned int ent_size
= 8;
10021 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10023 ent
->got
.offset
= s
->size
;
10024 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10029 s
->size
+= ent_size
;
10030 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10032 htab
->elf
.irelplt
->size
+= rel_size
;
10033 htab
->got_reli_size
+= rel_size
;
10035 else if (bfd_link_pic (info
)
10036 && !((ent
->tls_type
& TLS_TPREL
) != 0
10037 && bfd_link_executable (info
)))
10039 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10040 srel
->size
+= rel_size
;
10049 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10050 for (; local_plt
< end_local_plt
; ++local_plt
)
10052 struct plt_entry
*ent
;
10054 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10055 if (ent
->plt
.refcount
> 0)
10057 s
= htab
->elf
.iplt
;
10058 ent
->plt
.offset
= s
->size
;
10059 s
->size
+= PLT_ENTRY_SIZE (htab
);
10061 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10064 ent
->plt
.offset
= (bfd_vma
) -1;
10068 /* Allocate global sym .plt and .got entries, and space for global
10069 sym dynamic relocs. */
10070 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10071 /* Stash the end of glink branch table. */
10072 if (htab
->glink
!= NULL
)
10073 htab
->glink
->rawsize
= htab
->glink
->size
;
10075 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10076 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10078 first_tlsld
= NULL
;
10079 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10081 struct got_entry
*ent
;
10083 if (!is_ppc64_elf (ibfd
))
10086 ent
= ppc64_tlsld_got (ibfd
);
10087 if (ent
->got
.refcount
> 0)
10089 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10091 ent
->is_indirect
= TRUE
;
10092 ent
->got
.ent
= first_tlsld
;
10096 if (first_tlsld
== NULL
)
10098 s
= ppc64_elf_tdata (ibfd
)->got
;
10099 ent
->got
.offset
= s
->size
;
10102 if (bfd_link_pic (info
))
10104 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10105 srel
->size
+= sizeof (Elf64_External_Rela
);
10110 ent
->got
.offset
= (bfd_vma
) -1;
10113 /* We now have determined the sizes of the various dynamic sections.
10114 Allocate memory for them. */
10116 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10118 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10121 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10122 /* These haven't been allocated yet; don't strip. */
10124 else if (s
== htab
->elf
.sgot
10125 || s
== htab
->elf
.splt
10126 || s
== htab
->elf
.iplt
10127 || s
== htab
->glink
10128 || s
== htab
->elf
.sdynbss
10129 || s
== htab
->elf
.sdynrelro
)
10131 /* Strip this section if we don't need it; see the
10134 else if (s
== htab
->glink_eh_frame
)
10136 if (!bfd_is_abs_section (s
->output_section
))
10137 /* Not sized yet. */
10140 else if (CONST_STRNEQ (s
->name
, ".rela"))
10144 if (s
!= htab
->elf
.srelplt
)
10147 /* We use the reloc_count field as a counter if we need
10148 to copy relocs into the output file. */
10149 s
->reloc_count
= 0;
10154 /* It's not one of our sections, so don't allocate space. */
10160 /* If we don't need this section, strip it from the
10161 output file. This is mostly to handle .rela.bss and
10162 .rela.plt. We must create both sections in
10163 create_dynamic_sections, because they must be created
10164 before the linker maps input sections to output
10165 sections. The linker does that before
10166 adjust_dynamic_symbol is called, and it is that
10167 function which decides whether anything needs to go
10168 into these sections. */
10169 s
->flags
|= SEC_EXCLUDE
;
10173 if (bfd_is_abs_section (s
->output_section
))
10174 _bfd_error_handler (_("warning: discarding dynamic section %s"),
10177 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10180 /* Allocate memory for the section contents. We use bfd_zalloc
10181 here in case unused entries are not reclaimed before the
10182 section's contents are written out. This should not happen,
10183 but this way if it does we get a R_PPC64_NONE reloc in .rela
10184 sections instead of garbage.
10185 We also rely on the section contents being zero when writing
10186 the GOT and .dynrelro. */
10187 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10188 if (s
->contents
== NULL
)
10192 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10194 if (!is_ppc64_elf (ibfd
))
10197 s
= ppc64_elf_tdata (ibfd
)->got
;
10198 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10201 s
->flags
|= SEC_EXCLUDE
;
10204 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10205 if (s
->contents
== NULL
)
10209 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10213 s
->flags
|= SEC_EXCLUDE
;
10216 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10217 if (s
->contents
== NULL
)
10220 s
->reloc_count
= 0;
10225 if (htab
->elf
.dynamic_sections_created
)
10227 bfd_boolean tls_opt
;
10229 /* Add some entries to the .dynamic section. We fill in the
10230 values later, in ppc64_elf_finish_dynamic_sections, but we
10231 must add the entries now so that we get the correct size for
10232 the .dynamic section. The DT_DEBUG entry is filled in by the
10233 dynamic linker and used by the debugger. */
10234 #define add_dynamic_entry(TAG, VAL) \
10235 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10237 if (bfd_link_executable (info
))
10239 if (!add_dynamic_entry (DT_DEBUG
, 0))
10243 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10245 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10246 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10247 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10248 || !add_dynamic_entry (DT_JMPREL
, 0)
10249 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10253 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10255 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10256 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10260 tls_opt
= (htab
->params
->tls_get_addr_opt
10261 && htab
->tls_get_addr_fd
!= NULL
10262 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10263 if (tls_opt
|| !htab
->opd_abi
)
10265 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10271 if (!add_dynamic_entry (DT_RELA
, 0)
10272 || !add_dynamic_entry (DT_RELASZ
, 0)
10273 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10276 /* If any dynamic relocs apply to a read-only section,
10277 then we need a DT_TEXTREL entry. */
10278 if ((info
->flags
& DF_TEXTREL
) == 0)
10279 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10281 if ((info
->flags
& DF_TEXTREL
) != 0)
10283 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10288 #undef add_dynamic_entry
10293 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10296 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10298 if (h
->plt
.plist
!= NULL
10300 && !h
->pointer_equality_needed
)
10303 return _bfd_elf_hash_symbol (h
);
10306 /* Determine the type of stub needed, if any, for a call. */
10308 static inline enum ppc_stub_type
10309 ppc_type_of_stub (asection
*input_sec
,
10310 const Elf_Internal_Rela
*rel
,
10311 struct ppc_link_hash_entry
**hash
,
10312 struct plt_entry
**plt_ent
,
10313 bfd_vma destination
,
10314 unsigned long local_off
)
10316 struct ppc_link_hash_entry
*h
= *hash
;
10318 bfd_vma branch_offset
;
10319 bfd_vma max_branch_offset
;
10320 enum elf_ppc64_reloc_type r_type
;
10324 struct plt_entry
*ent
;
10325 struct ppc_link_hash_entry
*fdh
= h
;
10327 && h
->oh
->is_func_descriptor
)
10329 fdh
= ppc_follow_link (h
->oh
);
10333 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10334 if (ent
->addend
== rel
->r_addend
10335 && ent
->plt
.offset
!= (bfd_vma
) -1)
10338 return ppc_stub_plt_call
;
10341 /* Here, we know we don't have a plt entry. If we don't have a
10342 either a defined function descriptor or a defined entry symbol
10343 in a regular object file, then it is pointless trying to make
10344 any other type of stub. */
10345 if (!is_static_defined (&fdh
->elf
)
10346 && !is_static_defined (&h
->elf
))
10347 return ppc_stub_none
;
10349 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10351 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10352 struct plt_entry
**local_plt
= (struct plt_entry
**)
10353 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10354 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10356 if (local_plt
[r_symndx
] != NULL
)
10358 struct plt_entry
*ent
;
10360 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10361 if (ent
->addend
== rel
->r_addend
10362 && ent
->plt
.offset
!= (bfd_vma
) -1)
10365 return ppc_stub_plt_call
;
10370 /* Determine where the call point is. */
10371 location
= (input_sec
->output_offset
10372 + input_sec
->output_section
->vma
10375 branch_offset
= destination
- location
;
10376 r_type
= ELF64_R_TYPE (rel
->r_info
);
10378 /* Determine if a long branch stub is needed. */
10379 max_branch_offset
= 1 << 25;
10380 if (r_type
!= R_PPC64_REL24
)
10381 max_branch_offset
= 1 << 15;
10383 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10384 /* We need a stub. Figure out whether a long_branch or plt_branch
10385 is needed later. */
10386 return ppc_stub_long_branch
;
10388 return ppc_stub_none
;
10391 /* With power7 weakly ordered memory model, it is possible for ld.so
10392 to update a plt entry in one thread and have another thread see a
10393 stale zero toc entry. To avoid this we need some sort of acquire
10394 barrier in the call stub. One solution is to make the load of the
10395 toc word seem to appear to depend on the load of the function entry
10396 word. Another solution is to test for r2 being zero, and branch to
10397 the appropriate glink entry if so.
10399 . fake dep barrier compare
10400 . ld 12,xxx(2) ld 12,xxx(2)
10401 . mtctr 12 mtctr 12
10402 . xor 11,12,12 ld 2,xxx+8(2)
10403 . add 2,2,11 cmpldi 2,0
10404 . ld 2,xxx+8(2) bnectr+
10405 . bctr b <glink_entry>
10407 The solution involving the compare turns out to be faster, so
10408 that's what we use unless the branch won't reach. */
10410 #define ALWAYS_USE_FAKE_DEP 0
10411 #define ALWAYS_EMIT_R2SAVE 0
10413 #define PPC_LO(v) ((v) & 0xffff)
10414 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10415 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10417 static inline unsigned int
10418 plt_stub_size (struct ppc_link_hash_table
*htab
,
10419 struct ppc_stub_hash_entry
*stub_entry
,
10422 unsigned size
= 12;
10424 if (ALWAYS_EMIT_R2SAVE
10425 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10427 if (PPC_HA (off
) != 0)
10432 if (htab
->params
->plt_static_chain
)
10434 if (htab
->params
->plt_thread_safe
10435 && htab
->elf
.dynamic_sections_created
10436 && stub_entry
->h
!= NULL
10437 && stub_entry
->h
->elf
.dynindx
!= -1)
10439 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10442 if (stub_entry
->h
!= NULL
10443 && (stub_entry
->h
== htab
->tls_get_addr_fd
10444 || stub_entry
->h
== htab
->tls_get_addr
)
10445 && htab
->params
->tls_get_addr_opt
)
10448 if (ALWAYS_EMIT_R2SAVE
10449 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10455 /* Depending on the sign of plt_stub_align:
10456 If positive, return the padding to align to a 2**plt_stub_align
10458 If negative, if this stub would cross fewer 2**plt_stub_align
10459 boundaries if we align, then return the padding needed to do so. */
10461 static inline unsigned int
10462 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10463 struct ppc_stub_hash_entry
*stub_entry
,
10467 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10468 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10470 if (htab
->params
->plt_stub_align
>= 0)
10472 stub_align
= 1 << htab
->params
->plt_stub_align
;
10473 if ((stub_off
& (stub_align
- 1)) != 0)
10474 return stub_align
- (stub_off
& (stub_align
- 1));
10478 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10479 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10480 > ((stub_size
- 1) & -stub_align
))
10481 return stub_align
- (stub_off
& (stub_align
- 1));
10485 /* Build a .plt call stub. */
10487 static inline bfd_byte
*
10488 build_plt_stub (struct ppc_link_hash_table
*htab
,
10489 struct ppc_stub_hash_entry
*stub_entry
,
10490 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10492 bfd
*obfd
= htab
->params
->stub_bfd
;
10493 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10494 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10495 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10496 && htab
->elf
.dynamic_sections_created
10497 && stub_entry
->h
!= NULL
10498 && stub_entry
->h
->elf
.dynindx
!= -1);
10499 bfd_boolean use_fake_dep
= plt_thread_safe
;
10500 bfd_vma cmp_branch_off
= 0;
10502 if (!ALWAYS_USE_FAKE_DEP
10505 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10506 || stub_entry
->h
== htab
->tls_get_addr
)
10507 && htab
->params
->tls_get_addr_opt
))
10509 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10510 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10511 / PLT_ENTRY_SIZE (htab
));
10512 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10515 if (pltindex
> 32768)
10516 glinkoff
+= (pltindex
- 32768) * 4;
10518 + htab
->glink
->output_offset
10519 + htab
->glink
->output_section
->vma
);
10520 from
= (p
- stub_entry
->group
->stub_sec
->contents
10521 + 4 * (ALWAYS_EMIT_R2SAVE
10522 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10523 + 4 * (PPC_HA (offset
) != 0)
10524 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10525 != PPC_HA (offset
))
10526 + 4 * (plt_static_chain
!= 0)
10528 + stub_entry
->group
->stub_sec
->output_offset
10529 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10530 cmp_branch_off
= to
- from
;
10531 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10534 if (PPC_HA (offset
) != 0)
10538 if (ALWAYS_EMIT_R2SAVE
10539 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10540 r
[0].r_offset
+= 4;
10541 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10542 r
[1].r_offset
= r
[0].r_offset
+ 4;
10543 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10544 r
[1].r_addend
= r
[0].r_addend
;
10547 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10549 r
[2].r_offset
= r
[1].r_offset
+ 4;
10550 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10551 r
[2].r_addend
= r
[0].r_addend
;
10555 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10556 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10557 r
[2].r_addend
= r
[0].r_addend
+ 8;
10558 if (plt_static_chain
)
10560 r
[3].r_offset
= r
[2].r_offset
+ 4;
10561 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10562 r
[3].r_addend
= r
[0].r_addend
+ 16;
10567 if (ALWAYS_EMIT_R2SAVE
10568 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10569 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10572 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10573 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10577 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10578 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10581 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10583 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10586 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10591 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10592 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10594 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10595 if (plt_static_chain
)
10596 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10603 if (ALWAYS_EMIT_R2SAVE
10604 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10605 r
[0].r_offset
+= 4;
10606 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10609 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10611 r
[1].r_offset
= r
[0].r_offset
+ 4;
10612 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10613 r
[1].r_addend
= r
[0].r_addend
;
10617 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10618 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10619 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10620 if (plt_static_chain
)
10622 r
[2].r_offset
= r
[1].r_offset
+ 4;
10623 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10624 r
[2].r_addend
= r
[0].r_addend
+ 8;
10629 if (ALWAYS_EMIT_R2SAVE
10630 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10631 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10632 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10634 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10636 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10639 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10644 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10645 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10647 if (plt_static_chain
)
10648 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10649 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10652 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10654 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10655 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10656 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10659 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10663 /* Build a special .plt call stub for __tls_get_addr. */
10665 #define LD_R11_0R3 0xe9630000
10666 #define LD_R12_0R3 0xe9830000
10667 #define MR_R0_R3 0x7c601b78
10668 #define CMPDI_R11_0 0x2c2b0000
10669 #define ADD_R3_R12_R13 0x7c6c6a14
10670 #define BEQLR 0x4d820020
10671 #define MR_R3_R0 0x7c030378
10672 #define STD_R11_0R1 0xf9610000
10673 #define BCTRL 0x4e800421
10674 #define LD_R11_0R1 0xe9610000
10675 #define MTLR_R11 0x7d6803a6
10677 static inline bfd_byte
*
10678 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10679 struct ppc_stub_hash_entry
*stub_entry
,
10680 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10682 bfd
*obfd
= htab
->params
->stub_bfd
;
10684 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10685 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10686 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10687 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10688 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10689 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10690 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10692 r
[0].r_offset
+= 7 * 4;
10693 if (!ALWAYS_EMIT_R2SAVE
10694 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10695 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10697 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10698 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10701 r
[0].r_offset
+= 2 * 4;
10702 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10703 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10705 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10706 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10707 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10708 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10713 static Elf_Internal_Rela
*
10714 get_relocs (asection
*sec
, int count
)
10716 Elf_Internal_Rela
*relocs
;
10717 struct bfd_elf_section_data
*elfsec_data
;
10719 elfsec_data
= elf_section_data (sec
);
10720 relocs
= elfsec_data
->relocs
;
10721 if (relocs
== NULL
)
10723 bfd_size_type relsize
;
10724 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10725 relocs
= bfd_alloc (sec
->owner
, relsize
);
10726 if (relocs
== NULL
)
10728 elfsec_data
->relocs
= relocs
;
10729 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10730 sizeof (Elf_Internal_Shdr
));
10731 if (elfsec_data
->rela
.hdr
== NULL
)
10733 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10734 * sizeof (Elf64_External_Rela
));
10735 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10736 sec
->reloc_count
= 0;
10738 relocs
+= sec
->reloc_count
;
10739 sec
->reloc_count
+= count
;
10744 get_r2off (struct bfd_link_info
*info
,
10745 struct ppc_stub_hash_entry
*stub_entry
)
10747 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10748 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10752 /* Support linking -R objects. Get the toc pointer from the
10755 if (!htab
->opd_abi
)
10757 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10758 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10760 if (strcmp (opd
->name
, ".opd") != 0
10761 || opd
->reloc_count
!= 0)
10763 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10764 stub_entry
->h
->elf
.root
.root
.string
);
10765 bfd_set_error (bfd_error_bad_value
);
10766 return (bfd_vma
) -1;
10768 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10769 return (bfd_vma
) -1;
10770 r2off
= bfd_get_64 (opd
->owner
, buf
);
10771 r2off
-= elf_gp (info
->output_bfd
);
10773 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10778 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10780 struct ppc_stub_hash_entry
*stub_entry
;
10781 struct ppc_branch_hash_entry
*br_entry
;
10782 struct bfd_link_info
*info
;
10783 struct ppc_link_hash_table
*htab
;
10788 Elf_Internal_Rela
*r
;
10791 /* Massage our args to the form they really have. */
10792 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10795 htab
= ppc_hash_table (info
);
10799 /* Make a note of the offset within the stubs for this entry. */
10800 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10801 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10803 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10804 switch (stub_entry
->stub_type
)
10806 case ppc_stub_long_branch
:
10807 case ppc_stub_long_branch_r2off
:
10808 /* Branches are relative. This is where we are going to. */
10809 dest
= (stub_entry
->target_value
10810 + stub_entry
->target_section
->output_offset
10811 + stub_entry
->target_section
->output_section
->vma
);
10812 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10815 /* And this is where we are coming from. */
10816 off
-= (stub_entry
->stub_offset
10817 + stub_entry
->group
->stub_sec
->output_offset
10818 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10821 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10823 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10825 if (r2off
== (bfd_vma
) -1)
10827 htab
->stub_error
= TRUE
;
10830 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10833 if (PPC_HA (r2off
) != 0)
10835 bfd_put_32 (htab
->params
->stub_bfd
,
10836 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10840 if (PPC_LO (r2off
) != 0)
10842 bfd_put_32 (htab
->params
->stub_bfd
,
10843 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10849 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10851 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10853 info
->callbacks
->einfo
10854 (_("%P: long branch stub `%s' offset overflow\n"),
10855 stub_entry
->root
.string
);
10856 htab
->stub_error
= TRUE
;
10860 if (info
->emitrelocations
)
10862 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10865 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10866 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10867 r
->r_addend
= dest
;
10868 if (stub_entry
->h
!= NULL
)
10870 struct elf_link_hash_entry
**hashes
;
10871 unsigned long symndx
;
10872 struct ppc_link_hash_entry
*h
;
10874 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10875 if (hashes
== NULL
)
10877 bfd_size_type hsize
;
10879 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10880 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10881 if (hashes
== NULL
)
10883 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10884 htab
->stub_globals
= 1;
10886 symndx
= htab
->stub_globals
++;
10888 hashes
[symndx
] = &h
->elf
;
10889 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10890 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10891 h
= ppc_follow_link (h
->oh
);
10892 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10893 /* H is an opd symbol. The addend must be zero. */
10897 off
= (h
->elf
.root
.u
.def
.value
10898 + h
->elf
.root
.u
.def
.section
->output_offset
10899 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10900 r
->r_addend
-= off
;
10906 case ppc_stub_plt_branch
:
10907 case ppc_stub_plt_branch_r2off
:
10908 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10909 stub_entry
->root
.string
+ 9,
10911 if (br_entry
== NULL
)
10913 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10914 stub_entry
->root
.string
);
10915 htab
->stub_error
= TRUE
;
10919 dest
= (stub_entry
->target_value
10920 + stub_entry
->target_section
->output_offset
10921 + stub_entry
->target_section
->output_section
->vma
);
10922 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10923 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10925 bfd_put_64 (htab
->brlt
->owner
, dest
,
10926 htab
->brlt
->contents
+ br_entry
->offset
);
10928 if (br_entry
->iter
== htab
->stub_iteration
)
10930 br_entry
->iter
= 0;
10932 if (htab
->relbrlt
!= NULL
)
10934 /* Create a reloc for the branch lookup table entry. */
10935 Elf_Internal_Rela rela
;
10938 rela
.r_offset
= (br_entry
->offset
10939 + htab
->brlt
->output_offset
10940 + htab
->brlt
->output_section
->vma
);
10941 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10942 rela
.r_addend
= dest
;
10944 rl
= htab
->relbrlt
->contents
;
10945 rl
+= (htab
->relbrlt
->reloc_count
++
10946 * sizeof (Elf64_External_Rela
));
10947 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10949 else if (info
->emitrelocations
)
10951 r
= get_relocs (htab
->brlt
, 1);
10954 /* brlt, being SEC_LINKER_CREATED does not go through the
10955 normal reloc processing. Symbols and offsets are not
10956 translated from input file to output file form, so
10957 set up the offset per the output file. */
10958 r
->r_offset
= (br_entry
->offset
10959 + htab
->brlt
->output_offset
10960 + htab
->brlt
->output_section
->vma
);
10961 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10962 r
->r_addend
= dest
;
10966 dest
= (br_entry
->offset
10967 + htab
->brlt
->output_offset
10968 + htab
->brlt
->output_section
->vma
);
10971 - elf_gp (info
->output_bfd
)
10972 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
10974 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10976 info
->callbacks
->einfo
10977 (_("%P: linkage table error against `%T'\n"),
10978 stub_entry
->root
.string
);
10979 bfd_set_error (bfd_error_bad_value
);
10980 htab
->stub_error
= TRUE
;
10984 if (info
->emitrelocations
)
10986 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10989 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10990 if (bfd_big_endian (info
->output_bfd
))
10991 r
[0].r_offset
+= 2;
10992 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10993 r
[0].r_offset
+= 4;
10994 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10995 r
[0].r_addend
= dest
;
10996 if (PPC_HA (off
) != 0)
10998 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10999 r
[1].r_offset
= r
[0].r_offset
+ 4;
11000 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11001 r
[1].r_addend
= r
[0].r_addend
;
11005 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11007 if (PPC_HA (off
) != 0)
11010 bfd_put_32 (htab
->params
->stub_bfd
,
11011 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11013 bfd_put_32 (htab
->params
->stub_bfd
,
11014 LD_R12_0R12
| PPC_LO (off
), loc
);
11019 bfd_put_32 (htab
->params
->stub_bfd
,
11020 LD_R12_0R2
| PPC_LO (off
), loc
);
11025 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11027 if (r2off
== (bfd_vma
) -1)
11029 htab
->stub_error
= TRUE
;
11033 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11036 if (PPC_HA (off
) != 0)
11039 bfd_put_32 (htab
->params
->stub_bfd
,
11040 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11042 bfd_put_32 (htab
->params
->stub_bfd
,
11043 LD_R12_0R12
| PPC_LO (off
), loc
);
11046 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11048 if (PPC_HA (r2off
) != 0)
11052 bfd_put_32 (htab
->params
->stub_bfd
,
11053 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11055 if (PPC_LO (r2off
) != 0)
11059 bfd_put_32 (htab
->params
->stub_bfd
,
11060 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11064 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11066 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11069 case ppc_stub_plt_call
:
11070 case ppc_stub_plt_call_r2save
:
11071 if (stub_entry
->h
!= NULL
11072 && stub_entry
->h
->is_func_descriptor
11073 && stub_entry
->h
->oh
!= NULL
)
11075 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11077 /* If the old-ABI "dot-symbol" is undefined make it weak so
11078 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11079 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11080 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11081 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11082 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11085 /* Now build the stub. */
11086 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11087 if (dest
>= (bfd_vma
) -2)
11090 plt
= htab
->elf
.splt
;
11091 if (!htab
->elf
.dynamic_sections_created
11092 || stub_entry
->h
== NULL
11093 || stub_entry
->h
->elf
.dynindx
== -1)
11094 plt
= htab
->elf
.iplt
;
11096 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11098 if (stub_entry
->h
== NULL
11099 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11101 Elf_Internal_Rela rela
;
11104 rela
.r_offset
= dest
;
11106 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11108 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11109 rela
.r_addend
= (stub_entry
->target_value
11110 + stub_entry
->target_section
->output_offset
11111 + stub_entry
->target_section
->output_section
->vma
);
11113 rl
= (htab
->elf
.irelplt
->contents
11114 + (htab
->elf
.irelplt
->reloc_count
++
11115 * sizeof (Elf64_External_Rela
)));
11116 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11117 stub_entry
->plt_ent
->plt
.offset
|= 1;
11118 htab
->local_ifunc_resolver
= 1;
11122 - elf_gp (info
->output_bfd
)
11123 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11125 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11127 info
->callbacks
->einfo
11128 /* xgettext:c-format */
11129 (_("%P: linkage table error against `%T'\n"),
11130 stub_entry
->h
!= NULL
11131 ? stub_entry
->h
->elf
.root
.root
.string
11133 bfd_set_error (bfd_error_bad_value
);
11134 htab
->stub_error
= TRUE
;
11138 if (htab
->params
->plt_stub_align
!= 0)
11140 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11142 stub_entry
->group
->stub_sec
->size
+= pad
;
11143 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11148 if (info
->emitrelocations
)
11150 r
= get_relocs (stub_entry
->group
->stub_sec
,
11151 ((PPC_HA (off
) != 0)
11153 ? 2 + (htab
->params
->plt_static_chain
11154 && PPC_HA (off
+ 16) == PPC_HA (off
))
11158 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11159 if (bfd_big_endian (info
->output_bfd
))
11160 r
[0].r_offset
+= 2;
11161 r
[0].r_addend
= dest
;
11163 if (stub_entry
->h
!= NULL
11164 && (stub_entry
->h
== htab
->tls_get_addr_fd
11165 || stub_entry
->h
== htab
->tls_get_addr
)
11166 && htab
->params
->tls_get_addr_opt
)
11167 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11169 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11173 case ppc_stub_save_res
:
11181 stub_entry
->group
->stub_sec
->size
+= size
;
11183 if (htab
->params
->emit_stub_syms
)
11185 struct elf_link_hash_entry
*h
;
11188 const char *const stub_str
[] = { "long_branch",
11189 "long_branch_r2off",
11191 "plt_branch_r2off",
11195 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11196 len2
= strlen (stub_entry
->root
.string
);
11197 name
= bfd_malloc (len1
+ len2
+ 2);
11200 memcpy (name
, stub_entry
->root
.string
, 9);
11201 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11202 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11203 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11206 if (h
->root
.type
== bfd_link_hash_new
)
11208 h
->root
.type
= bfd_link_hash_defined
;
11209 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11210 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11211 h
->ref_regular
= 1;
11212 h
->def_regular
= 1;
11213 h
->ref_regular_nonweak
= 1;
11214 h
->forced_local
= 1;
11216 h
->root
.linker_def
= 1;
11223 /* As above, but don't actually build the stub. Just bump offset so
11224 we know stub section sizes, and select plt_branch stubs where
11225 long_branch stubs won't do. */
11228 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11230 struct ppc_stub_hash_entry
*stub_entry
;
11231 struct bfd_link_info
*info
;
11232 struct ppc_link_hash_table
*htab
;
11236 /* Massage our args to the form they really have. */
11237 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11240 htab
= ppc_hash_table (info
);
11244 if (stub_entry
->h
!= NULL
11245 && stub_entry
->h
->save_res
11246 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11247 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11249 /* Don't make stubs to out-of-line register save/restore
11250 functions. Instead, emit copies of the functions. */
11251 stub_entry
->group
->needs_save_res
= 1;
11252 stub_entry
->stub_type
= ppc_stub_save_res
;
11256 if (stub_entry
->stub_type
== ppc_stub_plt_call
11257 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11260 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11261 if (off
>= (bfd_vma
) -2)
11263 plt
= htab
->elf
.splt
;
11264 if (!htab
->elf
.dynamic_sections_created
11265 || stub_entry
->h
== NULL
11266 || stub_entry
->h
->elf
.dynindx
== -1)
11267 plt
= htab
->elf
.iplt
;
11268 off
+= (plt
->output_offset
11269 + plt
->output_section
->vma
11270 - elf_gp (info
->output_bfd
)
11271 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11273 size
= plt_stub_size (htab
, stub_entry
, off
);
11274 if (stub_entry
->h
!= NULL
11275 && (stub_entry
->h
== htab
->tls_get_addr_fd
11276 || stub_entry
->h
== htab
->tls_get_addr
)
11277 && htab
->params
->tls_get_addr_opt
11278 && (ALWAYS_EMIT_R2SAVE
11279 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11280 stub_entry
->group
->tls_get_addr_opt_bctrl
11281 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11283 if (htab
->params
->plt_stub_align
)
11284 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11285 if (info
->emitrelocations
)
11287 stub_entry
->group
->stub_sec
->reloc_count
11288 += ((PPC_HA (off
) != 0)
11290 ? 2 + (htab
->params
->plt_static_chain
11291 && PPC_HA (off
+ 16) == PPC_HA (off
))
11293 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11298 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11301 bfd_vma local_off
= 0;
11303 off
= (stub_entry
->target_value
11304 + stub_entry
->target_section
->output_offset
11305 + stub_entry
->target_section
->output_section
->vma
);
11306 off
-= (stub_entry
->group
->stub_sec
->size
11307 + stub_entry
->group
->stub_sec
->output_offset
11308 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11310 /* Reset the stub type from the plt variant in case we now
11311 can reach with a shorter stub. */
11312 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11313 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11316 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11318 r2off
= get_r2off (info
, stub_entry
);
11319 if (r2off
== (bfd_vma
) -1)
11321 htab
->stub_error
= TRUE
;
11325 if (PPC_HA (r2off
) != 0)
11327 if (PPC_LO (r2off
) != 0)
11332 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11334 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11335 Do the same for -R objects without function descriptors. */
11336 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11337 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11339 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11341 struct ppc_branch_hash_entry
*br_entry
;
11343 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11344 stub_entry
->root
.string
+ 9,
11346 if (br_entry
== NULL
)
11348 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11349 stub_entry
->root
.string
);
11350 htab
->stub_error
= TRUE
;
11354 if (br_entry
->iter
!= htab
->stub_iteration
)
11356 br_entry
->iter
= htab
->stub_iteration
;
11357 br_entry
->offset
= htab
->brlt
->size
;
11358 htab
->brlt
->size
+= 8;
11360 if (htab
->relbrlt
!= NULL
)
11361 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11362 else if (info
->emitrelocations
)
11364 htab
->brlt
->reloc_count
+= 1;
11365 htab
->brlt
->flags
|= SEC_RELOC
;
11369 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11370 off
= (br_entry
->offset
11371 + htab
->brlt
->output_offset
11372 + htab
->brlt
->output_section
->vma
11373 - elf_gp (info
->output_bfd
)
11374 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11376 if (info
->emitrelocations
)
11378 stub_entry
->group
->stub_sec
->reloc_count
11379 += 1 + (PPC_HA (off
) != 0);
11380 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11383 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11386 if (PPC_HA (off
) != 0)
11392 if (PPC_HA (off
) != 0)
11395 if (PPC_HA (r2off
) != 0)
11397 if (PPC_LO (r2off
) != 0)
11401 else if (info
->emitrelocations
)
11403 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11404 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11408 stub_entry
->group
->stub_sec
->size
+= size
;
11412 /* Set up various things so that we can make a list of input sections
11413 for each output section included in the link. Returns -1 on error,
11414 0 when no stubs will be needed, and 1 on success. */
11417 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11421 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11426 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11427 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11428 htab
->sec_info
= bfd_zmalloc (amt
);
11429 if (htab
->sec_info
== NULL
)
11432 /* Set toc_off for com, und, abs and ind sections. */
11433 for (id
= 0; id
< 3; id
++)
11434 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11439 /* Set up for first pass at multitoc partitioning. */
11442 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11444 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11446 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11447 htab
->toc_bfd
= NULL
;
11448 htab
->toc_first_sec
= NULL
;
11451 /* The linker repeatedly calls this function for each TOC input section
11452 and linker generated GOT section. Group input bfds such that the toc
11453 within a group is less than 64k in size. */
11456 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11458 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11459 bfd_vma addr
, off
, limit
;
11464 if (!htab
->second_toc_pass
)
11466 /* Keep track of the first .toc or .got section for this input bfd. */
11467 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11471 htab
->toc_bfd
= isec
->owner
;
11472 htab
->toc_first_sec
= isec
;
11475 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11476 off
= addr
- htab
->toc_curr
;
11477 limit
= 0x80008000;
11478 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11480 if (off
+ isec
->size
> limit
)
11482 addr
= (htab
->toc_first_sec
->output_offset
11483 + htab
->toc_first_sec
->output_section
->vma
);
11484 htab
->toc_curr
= addr
;
11485 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11488 /* toc_curr is the base address of this toc group. Set elf_gp
11489 for the input section to be the offset relative to the
11490 output toc base plus 0x8000. Making the input elf_gp an
11491 offset allows us to move the toc as a whole without
11492 recalculating input elf_gp. */
11493 off
= htab
->toc_curr
- elf_gp (info
->output_bfd
);
11494 off
+= TOC_BASE_OFF
;
11496 /* Die if someone uses a linker script that doesn't keep input
11497 file .toc and .got together. */
11499 && elf_gp (isec
->owner
) != 0
11500 && elf_gp (isec
->owner
) != off
)
11503 elf_gp (isec
->owner
) = off
;
11507 /* During the second pass toc_first_sec points to the start of
11508 a toc group, and toc_curr is used to track the old elf_gp.
11509 We use toc_bfd to ensure we only look at each bfd once. */
11510 if (htab
->toc_bfd
== isec
->owner
)
11512 htab
->toc_bfd
= isec
->owner
;
11514 if (htab
->toc_first_sec
== NULL
11515 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11517 htab
->toc_curr
= elf_gp (isec
->owner
);
11518 htab
->toc_first_sec
= isec
;
11520 addr
= (htab
->toc_first_sec
->output_offset
11521 + htab
->toc_first_sec
->output_section
->vma
);
11522 off
= addr
- elf_gp (info
->output_bfd
) + TOC_BASE_OFF
;
11523 elf_gp (isec
->owner
) = off
;
11528 /* Called via elf_link_hash_traverse to merge GOT entries for global
11532 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11534 if (h
->root
.type
== bfd_link_hash_indirect
)
11537 merge_got_entries (&h
->got
.glist
);
11542 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11546 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11548 struct got_entry
*gent
;
11550 if (h
->root
.type
== bfd_link_hash_indirect
)
11553 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11554 if (!gent
->is_indirect
)
11555 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11559 /* Called on the first multitoc pass after the last call to
11560 ppc64_elf_next_toc_section. This function removes duplicate GOT
11564 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11566 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11567 struct bfd
*ibfd
, *ibfd2
;
11568 bfd_boolean done_something
;
11570 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11572 if (!htab
->do_multi_toc
)
11575 /* Merge global sym got entries within a toc group. */
11576 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11578 /* And tlsld_got. */
11579 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11581 struct got_entry
*ent
, *ent2
;
11583 if (!is_ppc64_elf (ibfd
))
11586 ent
= ppc64_tlsld_got (ibfd
);
11587 if (!ent
->is_indirect
11588 && ent
->got
.offset
!= (bfd_vma
) -1)
11590 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11592 if (!is_ppc64_elf (ibfd2
))
11595 ent2
= ppc64_tlsld_got (ibfd2
);
11596 if (!ent2
->is_indirect
11597 && ent2
->got
.offset
!= (bfd_vma
) -1
11598 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11600 ent2
->is_indirect
= TRUE
;
11601 ent2
->got
.ent
= ent
;
11607 /* Zap sizes of got sections. */
11608 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11609 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11610 htab
->got_reli_size
= 0;
11612 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11614 asection
*got
, *relgot
;
11616 if (!is_ppc64_elf (ibfd
))
11619 got
= ppc64_elf_tdata (ibfd
)->got
;
11622 got
->rawsize
= got
->size
;
11624 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11625 relgot
->rawsize
= relgot
->size
;
11630 /* Now reallocate the got, local syms first. We don't need to
11631 allocate section contents again since we never increase size. */
11632 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11634 struct got_entry
**lgot_ents
;
11635 struct got_entry
**end_lgot_ents
;
11636 struct plt_entry
**local_plt
;
11637 struct plt_entry
**end_local_plt
;
11638 unsigned char *lgot_masks
;
11639 bfd_size_type locsymcount
;
11640 Elf_Internal_Shdr
*symtab_hdr
;
11643 if (!is_ppc64_elf (ibfd
))
11646 lgot_ents
= elf_local_got_ents (ibfd
);
11650 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11651 locsymcount
= symtab_hdr
->sh_info
;
11652 end_lgot_ents
= lgot_ents
+ locsymcount
;
11653 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11654 end_local_plt
= local_plt
+ locsymcount
;
11655 lgot_masks
= (unsigned char *) end_local_plt
;
11656 s
= ppc64_elf_tdata (ibfd
)->got
;
11657 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11659 struct got_entry
*ent
;
11661 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11663 unsigned int ent_size
= 8;
11664 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11666 ent
->got
.offset
= s
->size
;
11667 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11672 s
->size
+= ent_size
;
11673 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11675 htab
->elf
.irelplt
->size
+= rel_size
;
11676 htab
->got_reli_size
+= rel_size
;
11678 else if (bfd_link_pic (info
))
11680 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11681 srel
->size
+= rel_size
;
11687 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11689 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11691 struct got_entry
*ent
;
11693 if (!is_ppc64_elf (ibfd
))
11696 ent
= ppc64_tlsld_got (ibfd
);
11697 if (!ent
->is_indirect
11698 && ent
->got
.offset
!= (bfd_vma
) -1)
11700 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11701 ent
->got
.offset
= s
->size
;
11703 if (bfd_link_pic (info
))
11705 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11706 srel
->size
+= sizeof (Elf64_External_Rela
);
11711 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11712 if (!done_something
)
11713 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11717 if (!is_ppc64_elf (ibfd
))
11720 got
= ppc64_elf_tdata (ibfd
)->got
;
11723 done_something
= got
->rawsize
!= got
->size
;
11724 if (done_something
)
11729 if (done_something
)
11730 (*htab
->params
->layout_sections_again
) ();
11732 /* Set up for second pass over toc sections to recalculate elf_gp
11733 on input sections. */
11734 htab
->toc_bfd
= NULL
;
11735 htab
->toc_first_sec
= NULL
;
11736 htab
->second_toc_pass
= TRUE
;
11737 return done_something
;
11740 /* Called after second pass of multitoc partitioning. */
11743 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11745 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11747 /* After the second pass, toc_curr tracks the TOC offset used
11748 for code sections below in ppc64_elf_next_input_section. */
11749 htab
->toc_curr
= TOC_BASE_OFF
;
11752 /* No toc references were found in ISEC. If the code in ISEC makes no
11753 calls, then there's no need to use toc adjusting stubs when branching
11754 into ISEC. Actually, indirect calls from ISEC are OK as they will
11755 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11756 needed, and 2 if a cyclical call-graph was found but no other reason
11757 for a stub was detected. If called from the top level, a return of
11758 2 means the same as a return of 0. */
11761 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11765 /* Mark this section as checked. */
11766 isec
->call_check_done
= 1;
11768 /* We know none of our code bearing sections will need toc stubs. */
11769 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11772 if (isec
->size
== 0)
11775 if (isec
->output_section
== NULL
)
11779 if (isec
->reloc_count
!= 0)
11781 Elf_Internal_Rela
*relstart
, *rel
;
11782 Elf_Internal_Sym
*local_syms
;
11783 struct ppc_link_hash_table
*htab
;
11785 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11786 info
->keep_memory
);
11787 if (relstart
== NULL
)
11790 /* Look for branches to outside of this section. */
11792 htab
= ppc_hash_table (info
);
11796 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11798 enum elf_ppc64_reloc_type r_type
;
11799 unsigned long r_symndx
;
11800 struct elf_link_hash_entry
*h
;
11801 struct ppc_link_hash_entry
*eh
;
11802 Elf_Internal_Sym
*sym
;
11804 struct _opd_sec_data
*opd
;
11808 r_type
= ELF64_R_TYPE (rel
->r_info
);
11809 if (r_type
!= R_PPC64_REL24
11810 && r_type
!= R_PPC64_REL14
11811 && r_type
!= R_PPC64_REL14_BRTAKEN
11812 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11815 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11816 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11823 /* Calls to dynamic lib functions go through a plt call stub
11825 eh
= (struct ppc_link_hash_entry
*) h
;
11827 && (eh
->elf
.plt
.plist
!= NULL
11829 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11835 if (sym_sec
== NULL
)
11836 /* Ignore other undefined symbols. */
11839 /* Assume branches to other sections not included in the
11840 link need stubs too, to cover -R and absolute syms. */
11841 if (sym_sec
->output_section
== NULL
)
11848 sym_value
= sym
->st_value
;
11851 if (h
->root
.type
!= bfd_link_hash_defined
11852 && h
->root
.type
!= bfd_link_hash_defweak
)
11854 sym_value
= h
->root
.u
.def
.value
;
11856 sym_value
+= rel
->r_addend
;
11858 /* If this branch reloc uses an opd sym, find the code section. */
11859 opd
= get_opd_info (sym_sec
);
11862 if (h
== NULL
&& opd
->adjust
!= NULL
)
11866 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11868 /* Assume deleted functions won't ever be called. */
11870 sym_value
+= adjust
;
11873 dest
= opd_entry_value (sym_sec
, sym_value
,
11874 &sym_sec
, NULL
, FALSE
);
11875 if (dest
== (bfd_vma
) -1)
11880 + sym_sec
->output_offset
11881 + sym_sec
->output_section
->vma
);
11883 /* Ignore branch to self. */
11884 if (sym_sec
== isec
)
11887 /* If the called function uses the toc, we need a stub. */
11888 if (sym_sec
->has_toc_reloc
11889 || sym_sec
->makes_toc_func_call
)
11895 /* Assume any branch that needs a long branch stub might in fact
11896 need a plt_branch stub. A plt_branch stub uses r2. */
11897 else if (dest
- (isec
->output_offset
11898 + isec
->output_section
->vma
11899 + rel
->r_offset
) + (1 << 25)
11900 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11908 /* If calling back to a section in the process of being
11909 tested, we can't say for sure that no toc adjusting stubs
11910 are needed, so don't return zero. */
11911 else if (sym_sec
->call_check_in_progress
)
11914 /* Branches to another section that itself doesn't have any TOC
11915 references are OK. Recursively call ourselves to check. */
11916 else if (!sym_sec
->call_check_done
)
11920 /* Mark current section as indeterminate, so that other
11921 sections that call back to current won't be marked as
11923 isec
->call_check_in_progress
= 1;
11924 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11925 isec
->call_check_in_progress
= 0;
11936 if (local_syms
!= NULL
11937 && (elf_symtab_hdr (isec
->owner
).contents
11938 != (unsigned char *) local_syms
))
11940 if (elf_section_data (isec
)->relocs
!= relstart
)
11945 && isec
->map_head
.s
!= NULL
11946 && (strcmp (isec
->output_section
->name
, ".init") == 0
11947 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11949 if (isec
->map_head
.s
->has_toc_reloc
11950 || isec
->map_head
.s
->makes_toc_func_call
)
11952 else if (!isec
->map_head
.s
->call_check_done
)
11955 isec
->call_check_in_progress
= 1;
11956 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11957 isec
->call_check_in_progress
= 0;
11964 isec
->makes_toc_func_call
= 1;
11969 /* The linker repeatedly calls this function for each input section,
11970 in the order that input sections are linked into output sections.
11971 Build lists of input sections to determine groupings between which
11972 we may insert linker stubs. */
11975 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11977 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11982 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11983 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
11985 /* This happens to make the list in reverse order,
11986 which is what we want. */
11987 htab
->sec_info
[isec
->id
].u
.list
11988 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
11989 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
11992 if (htab
->multi_toc_needed
)
11994 /* Analyse sections that aren't already flagged as needing a
11995 valid toc pointer. Exclude .fixup for the linux kernel.
11996 .fixup contains branches, but only back to the function that
11997 hit an exception. */
11998 if (!(isec
->has_toc_reloc
11999 || (isec
->flags
& SEC_CODE
) == 0
12000 || strcmp (isec
->name
, ".fixup") == 0
12001 || isec
->call_check_done
))
12003 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12006 /* Make all sections use the TOC assigned for this object file.
12007 This will be wrong for pasted sections; We fix that in
12008 check_pasted_section(). */
12009 if (elf_gp (isec
->owner
) != 0)
12010 htab
->toc_curr
= elf_gp (isec
->owner
);
12013 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12017 /* Check that all .init and .fini sections use the same toc, if they
12018 have toc relocs. */
12021 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12023 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12027 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12028 bfd_vma toc_off
= 0;
12031 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12032 if (i
->has_toc_reloc
)
12035 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12036 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12041 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12042 if (i
->makes_toc_func_call
)
12044 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12048 /* Make sure the whole pasted function uses the same toc offset. */
12050 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12051 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12057 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12059 return (check_pasted_section (info
, ".init")
12060 & check_pasted_section (info
, ".fini"));
12063 /* See whether we can group stub sections together. Grouping stub
12064 sections may result in fewer stubs. More importantly, we need to
12065 put all .init* and .fini* stubs at the beginning of the .init or
12066 .fini output sections respectively, because glibc splits the
12067 _init and _fini functions into multiple parts. Putting a stub in
12068 the middle of a function is not a good idea. */
12071 group_sections (struct bfd_link_info
*info
,
12072 bfd_size_type stub_group_size
,
12073 bfd_boolean stubs_always_before_branch
)
12075 struct ppc_link_hash_table
*htab
;
12077 bfd_boolean suppress_size_errors
;
12079 htab
= ppc_hash_table (info
);
12083 suppress_size_errors
= FALSE
;
12084 if (stub_group_size
== 1)
12086 /* Default values. */
12087 if (stubs_always_before_branch
)
12088 stub_group_size
= 0x1e00000;
12090 stub_group_size
= 0x1c00000;
12091 suppress_size_errors
= TRUE
;
12094 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12098 if (osec
->id
>= htab
->sec_info_arr_size
)
12101 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12102 while (tail
!= NULL
)
12106 bfd_size_type total
;
12107 bfd_boolean big_sec
;
12109 struct map_stub
*group
;
12110 bfd_size_type group_size
;
12113 total
= tail
->size
;
12114 group_size
= (ppc64_elf_section_data (tail
) != NULL
12115 && ppc64_elf_section_data (tail
)->has_14bit_branch
12116 ? stub_group_size
>> 10 : stub_group_size
);
12118 big_sec
= total
> group_size
;
12119 if (big_sec
&& !suppress_size_errors
)
12120 /* xgettext:c-format */
12121 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12122 tail
->owner
, tail
);
12123 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12125 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12126 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12127 < (ppc64_elf_section_data (prev
) != NULL
12128 && ppc64_elf_section_data (prev
)->has_14bit_branch
12129 ? (group_size
= stub_group_size
>> 10) : group_size
))
12130 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12133 /* OK, the size from the start of CURR to the end is less
12134 than group_size and thus can be handled by one stub
12135 section. (or the tail section is itself larger than
12136 group_size, in which case we may be toast.) We should
12137 really be keeping track of the total size of stubs added
12138 here, as stubs contribute to the final output section
12139 size. That's a little tricky, and this way will only
12140 break if stubs added make the total size more than 2^25,
12141 ie. for the default stub_group_size, if stubs total more
12142 than 2097152 bytes, or nearly 75000 plt call stubs. */
12143 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12146 group
->link_sec
= curr
;
12147 group
->stub_sec
= NULL
;
12148 group
->needs_save_res
= 0;
12149 group
->tls_get_addr_opt_bctrl
= -1u;
12150 group
->next
= htab
->group
;
12151 htab
->group
= group
;
12154 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12155 /* Set up this stub group. */
12156 htab
->sec_info
[tail
->id
].u
.group
= group
;
12158 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12160 /* But wait, there's more! Input sections up to group_size
12161 bytes before the stub section can be handled by it too.
12162 Don't do this if we have a really large section after the
12163 stubs, as adding more stubs increases the chance that
12164 branches may not reach into the stub section. */
12165 if (!stubs_always_before_branch
&& !big_sec
)
12168 while (prev
!= NULL
12169 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12170 < (ppc64_elf_section_data (prev
) != NULL
12171 && ppc64_elf_section_data (prev
)->has_14bit_branch
12172 ? (group_size
= stub_group_size
>> 10) : group_size
))
12173 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12176 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12177 htab
->sec_info
[tail
->id
].u
.group
= group
;
12186 static const unsigned char glink_eh_frame_cie
[] =
12188 0, 0, 0, 16, /* length. */
12189 0, 0, 0, 0, /* id. */
12190 1, /* CIE version. */
12191 'z', 'R', 0, /* Augmentation string. */
12192 4, /* Code alignment. */
12193 0x78, /* Data alignment. */
12195 1, /* Augmentation size. */
12196 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12197 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12201 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12203 size_t this_size
= 17;
12204 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12206 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12209 else if (to_bctrl
< 256)
12211 else if (to_bctrl
< 65536)
12217 this_size
= (this_size
+ align
- 1) & -align
;
12221 /* Stripping output sections is normally done before dynamic section
12222 symbols have been allocated. This function is called later, and
12223 handles cases like htab->brlt which is mapped to its own output
12227 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12229 if (isec
->size
== 0
12230 && isec
->output_section
->size
== 0
12231 && !(isec
->output_section
->flags
& SEC_KEEP
)
12232 && !bfd_section_removed_from_list (info
->output_bfd
,
12233 isec
->output_section
)
12234 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12236 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12237 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12238 info
->output_bfd
->section_count
--;
12242 /* Determine and set the size of the stub section for a final link.
12244 The basic idea here is to examine all the relocations looking for
12245 PC-relative calls to a target that is unreachable with a "bl"
12249 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12251 bfd_size_type stub_group_size
;
12252 bfd_boolean stubs_always_before_branch
;
12253 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12258 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12259 htab
->params
->plt_thread_safe
= 1;
12260 if (!htab
->opd_abi
)
12261 htab
->params
->plt_thread_safe
= 0;
12262 else if (htab
->params
->plt_thread_safe
== -1)
12264 static const char *const thread_starter
[] =
12268 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12270 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12271 "mq_notify", "create_timer",
12276 "GOMP_parallel_start",
12277 "GOMP_parallel_loop_static",
12278 "GOMP_parallel_loop_static_start",
12279 "GOMP_parallel_loop_dynamic",
12280 "GOMP_parallel_loop_dynamic_start",
12281 "GOMP_parallel_loop_guided",
12282 "GOMP_parallel_loop_guided_start",
12283 "GOMP_parallel_loop_runtime",
12284 "GOMP_parallel_loop_runtime_start",
12285 "GOMP_parallel_sections",
12286 "GOMP_parallel_sections_start",
12292 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12294 struct elf_link_hash_entry
*h
;
12295 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12296 FALSE
, FALSE
, TRUE
);
12297 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12298 if (htab
->params
->plt_thread_safe
)
12302 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12303 if (htab
->params
->group_size
< 0)
12304 stub_group_size
= -htab
->params
->group_size
;
12306 stub_group_size
= htab
->params
->group_size
;
12308 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12311 #define STUB_SHRINK_ITER 20
12312 /* Loop until no stubs added. After iteration 20 of this loop we may
12313 exit on a stub section shrinking. This is to break out of a
12314 pathological case where adding stubs on one iteration decreases
12315 section gaps (perhaps due to alignment), which then requires
12316 fewer or smaller stubs on the next iteration. */
12321 unsigned int bfd_indx
;
12322 struct map_stub
*group
;
12324 htab
->stub_iteration
+= 1;
12326 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12328 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12330 Elf_Internal_Shdr
*symtab_hdr
;
12332 Elf_Internal_Sym
*local_syms
= NULL
;
12334 if (!is_ppc64_elf (input_bfd
))
12337 /* We'll need the symbol table in a second. */
12338 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12339 if (symtab_hdr
->sh_info
== 0)
12342 /* Walk over each section attached to the input bfd. */
12343 for (section
= input_bfd
->sections
;
12345 section
= section
->next
)
12347 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12349 /* If there aren't any relocs, then there's nothing more
12351 if ((section
->flags
& SEC_RELOC
) == 0
12352 || (section
->flags
& SEC_ALLOC
) == 0
12353 || (section
->flags
& SEC_LOAD
) == 0
12354 || (section
->flags
& SEC_CODE
) == 0
12355 || section
->reloc_count
== 0)
12358 /* If this section is a link-once section that will be
12359 discarded, then don't create any stubs. */
12360 if (section
->output_section
== NULL
12361 || section
->output_section
->owner
!= info
->output_bfd
)
12364 /* Get the relocs. */
12366 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12367 info
->keep_memory
);
12368 if (internal_relocs
== NULL
)
12369 goto error_ret_free_local
;
12371 /* Now examine each relocation. */
12372 irela
= internal_relocs
;
12373 irelaend
= irela
+ section
->reloc_count
;
12374 for (; irela
< irelaend
; irela
++)
12376 enum elf_ppc64_reloc_type r_type
;
12377 unsigned int r_indx
;
12378 enum ppc_stub_type stub_type
;
12379 struct ppc_stub_hash_entry
*stub_entry
;
12380 asection
*sym_sec
, *code_sec
;
12381 bfd_vma sym_value
, code_value
;
12382 bfd_vma destination
;
12383 unsigned long local_off
;
12384 bfd_boolean ok_dest
;
12385 struct ppc_link_hash_entry
*hash
;
12386 struct ppc_link_hash_entry
*fdh
;
12387 struct elf_link_hash_entry
*h
;
12388 Elf_Internal_Sym
*sym
;
12390 const asection
*id_sec
;
12391 struct _opd_sec_data
*opd
;
12392 struct plt_entry
*plt_ent
;
12394 r_type
= ELF64_R_TYPE (irela
->r_info
);
12395 r_indx
= ELF64_R_SYM (irela
->r_info
);
12397 if (r_type
>= R_PPC64_max
)
12399 bfd_set_error (bfd_error_bad_value
);
12400 goto error_ret_free_internal
;
12403 /* Only look for stubs on branch instructions. */
12404 if (r_type
!= R_PPC64_REL24
12405 && r_type
!= R_PPC64_REL14
12406 && r_type
!= R_PPC64_REL14_BRTAKEN
12407 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12410 /* Now determine the call target, its name, value,
12412 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12413 r_indx
, input_bfd
))
12414 goto error_ret_free_internal
;
12415 hash
= (struct ppc_link_hash_entry
*) h
;
12422 sym_value
= sym
->st_value
;
12423 if (sym_sec
!= NULL
12424 && sym_sec
->output_section
!= NULL
)
12427 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12428 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12430 sym_value
= hash
->elf
.root
.u
.def
.value
;
12431 if (sym_sec
->output_section
!= NULL
)
12434 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12435 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12437 /* Recognise an old ABI func code entry sym, and
12438 use the func descriptor sym instead if it is
12440 if (hash
->elf
.root
.root
.string
[0] == '.'
12441 && hash
->oh
!= NULL
)
12443 fdh
= ppc_follow_link (hash
->oh
);
12444 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12445 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12447 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12448 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12449 if (sym_sec
->output_section
!= NULL
)
12458 bfd_set_error (bfd_error_bad_value
);
12459 goto error_ret_free_internal
;
12466 sym_value
+= irela
->r_addend
;
12467 destination
= (sym_value
12468 + sym_sec
->output_offset
12469 + sym_sec
->output_section
->vma
);
12470 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12475 code_sec
= sym_sec
;
12476 code_value
= sym_value
;
12477 opd
= get_opd_info (sym_sec
);
12482 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12484 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12487 code_value
+= adjust
;
12488 sym_value
+= adjust
;
12490 dest
= opd_entry_value (sym_sec
, sym_value
,
12491 &code_sec
, &code_value
, FALSE
);
12492 if (dest
!= (bfd_vma
) -1)
12494 destination
= dest
;
12497 /* Fixup old ABI sym to point at code
12499 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12500 hash
->elf
.root
.u
.def
.section
= code_sec
;
12501 hash
->elf
.root
.u
.def
.value
= code_value
;
12506 /* Determine what (if any) linker stub is needed. */
12508 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12509 &plt_ent
, destination
,
12512 if (stub_type
!= ppc_stub_plt_call
)
12514 /* Check whether we need a TOC adjusting stub.
12515 Since the linker pastes together pieces from
12516 different object files when creating the
12517 _init and _fini functions, it may be that a
12518 call to what looks like a local sym is in
12519 fact a call needing a TOC adjustment. */
12520 if (code_sec
!= NULL
12521 && code_sec
->output_section
!= NULL
12522 && (htab
->sec_info
[code_sec
->id
].toc_off
12523 != htab
->sec_info
[section
->id
].toc_off
)
12524 && (code_sec
->has_toc_reloc
12525 || code_sec
->makes_toc_func_call
))
12526 stub_type
= ppc_stub_long_branch_r2off
;
12529 if (stub_type
== ppc_stub_none
)
12532 /* __tls_get_addr calls might be eliminated. */
12533 if (stub_type
!= ppc_stub_plt_call
12535 && (hash
== htab
->tls_get_addr
12536 || hash
== htab
->tls_get_addr_fd
)
12537 && section
->has_tls_reloc
12538 && irela
!= internal_relocs
)
12540 /* Get tls info. */
12541 unsigned char *tls_mask
;
12543 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12544 irela
- 1, input_bfd
))
12545 goto error_ret_free_internal
;
12546 if (*tls_mask
!= 0)
12550 if (stub_type
== ppc_stub_plt_call
)
12553 && htab
->params
->plt_localentry0
!= 0
12554 && is_elfv2_localentry0 (&hash
->elf
))
12555 htab
->has_plt_localentry0
= 1;
12556 else if (irela
+ 1 < irelaend
12557 && irela
[1].r_offset
== irela
->r_offset
+ 4
12558 && (ELF64_R_TYPE (irela
[1].r_info
)
12559 == R_PPC64_TOCSAVE
))
12561 if (!tocsave_find (htab
, INSERT
,
12562 &local_syms
, irela
+ 1, input_bfd
))
12563 goto error_ret_free_internal
;
12566 stub_type
= ppc_stub_plt_call_r2save
;
12569 /* Support for grouping stub sections. */
12570 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12572 /* Get the name of this stub. */
12573 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12575 goto error_ret_free_internal
;
12577 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12578 stub_name
, FALSE
, FALSE
);
12579 if (stub_entry
!= NULL
)
12581 /* The proper stub has already been created. */
12583 if (stub_type
== ppc_stub_plt_call_r2save
)
12584 stub_entry
->stub_type
= stub_type
;
12588 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12589 if (stub_entry
== NULL
)
12592 error_ret_free_internal
:
12593 if (elf_section_data (section
)->relocs
== NULL
)
12594 free (internal_relocs
);
12595 error_ret_free_local
:
12596 if (local_syms
!= NULL
12597 && (symtab_hdr
->contents
12598 != (unsigned char *) local_syms
))
12603 stub_entry
->stub_type
= stub_type
;
12604 if (stub_type
!= ppc_stub_plt_call
12605 && stub_type
!= ppc_stub_plt_call_r2save
)
12607 stub_entry
->target_value
= code_value
;
12608 stub_entry
->target_section
= code_sec
;
12612 stub_entry
->target_value
= sym_value
;
12613 stub_entry
->target_section
= sym_sec
;
12615 stub_entry
->h
= hash
;
12616 stub_entry
->plt_ent
= plt_ent
;
12617 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12619 if (stub_entry
->h
!= NULL
)
12620 htab
->stub_globals
+= 1;
12623 /* We're done with the internal relocs, free them. */
12624 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12625 free (internal_relocs
);
12628 if (local_syms
!= NULL
12629 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12631 if (!info
->keep_memory
)
12634 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12638 /* We may have added some stubs. Find out the new size of the
12640 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12641 if (group
->stub_sec
!= NULL
)
12643 asection
*stub_sec
= group
->stub_sec
;
12645 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12646 || stub_sec
->rawsize
< stub_sec
->size
)
12647 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12648 stub_sec
->rawsize
= stub_sec
->size
;
12649 stub_sec
->size
= 0;
12650 stub_sec
->reloc_count
= 0;
12651 stub_sec
->flags
&= ~SEC_RELOC
;
12654 htab
->brlt
->size
= 0;
12655 htab
->brlt
->reloc_count
= 0;
12656 htab
->brlt
->flags
&= ~SEC_RELOC
;
12657 if (htab
->relbrlt
!= NULL
)
12658 htab
->relbrlt
->size
= 0;
12660 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12662 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12663 if (group
->needs_save_res
)
12664 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12666 if (info
->emitrelocations
12667 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12669 htab
->glink
->reloc_count
= 1;
12670 htab
->glink
->flags
|= SEC_RELOC
;
12673 if (htab
->glink_eh_frame
!= NULL
12674 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12675 && htab
->glink_eh_frame
->output_section
->size
> 8)
12677 size_t size
= 0, align
= 4;
12679 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12680 if (group
->stub_sec
!= NULL
)
12681 size
+= stub_eh_frame_size (group
, align
);
12682 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12683 size
+= (24 + align
- 1) & -align
;
12685 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12686 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12687 size
= (size
+ align
- 1) & -align
;
12688 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12689 htab
->glink_eh_frame
->size
= size
;
12692 if (htab
->params
->plt_stub_align
!= 0)
12693 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12694 if (group
->stub_sec
!= NULL
)
12695 group
->stub_sec
->size
= ((group
->stub_sec
->size
12696 + (1 << htab
->params
->plt_stub_align
) - 1)
12697 & -(1 << htab
->params
->plt_stub_align
));
12699 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12700 if (group
->stub_sec
!= NULL
12701 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12702 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12703 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12707 && (htab
->glink_eh_frame
== NULL
12708 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12711 /* Ask the linker to do its stuff. */
12712 (*htab
->params
->layout_sections_again
) ();
12715 if (htab
->glink_eh_frame
!= NULL
12716 && htab
->glink_eh_frame
->size
!= 0)
12719 bfd_byte
*p
, *last_fde
;
12720 size_t last_fde_len
, size
, align
, pad
;
12721 struct map_stub
*group
;
12723 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12726 htab
->glink_eh_frame
->contents
= p
;
12730 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12731 /* CIE length (rewrite in case little-endian). */
12732 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12733 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12734 p
+= last_fde_len
+ 4;
12736 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12737 if (group
->stub_sec
!= NULL
)
12740 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12742 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12745 val
= p
- htab
->glink_eh_frame
->contents
;
12746 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12748 /* Offset to stub section, written later. */
12750 /* stub section size. */
12751 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12753 /* Augmentation. */
12755 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12757 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12759 /* This FDE needs more than just the default.
12760 Describe __tls_get_addr_opt stub LR. */
12762 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12763 else if (to_bctrl
< 256)
12765 *p
++ = DW_CFA_advance_loc1
;
12768 else if (to_bctrl
< 65536)
12770 *p
++ = DW_CFA_advance_loc2
;
12771 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12776 *p
++ = DW_CFA_advance_loc4
;
12777 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12780 *p
++ = DW_CFA_offset_extended_sf
;
12782 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12783 *p
++ = DW_CFA_advance_loc
+ 4;
12784 *p
++ = DW_CFA_restore_extended
;
12788 p
= last_fde
+ last_fde_len
+ 4;
12790 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12793 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12795 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12798 val
= p
- htab
->glink_eh_frame
->contents
;
12799 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12801 /* Offset to .glink, written later. */
12804 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12806 /* Augmentation. */
12809 *p
++ = DW_CFA_advance_loc
+ 1;
12810 *p
++ = DW_CFA_register
;
12812 *p
++ = htab
->opd_abi
? 12 : 0;
12813 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12814 *p
++ = DW_CFA_restore_extended
;
12816 p
+= ((24 + align
- 1) & -align
) - 24;
12818 /* Subsume any padding into the last FDE if user .eh_frame
12819 sections are aligned more than glink_eh_frame. Otherwise any
12820 zero padding will be seen as a terminator. */
12821 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12822 size
= p
- htab
->glink_eh_frame
->contents
;
12823 pad
= ((size
+ align
- 1) & -align
) - size
;
12824 htab
->glink_eh_frame
->size
= size
+ pad
;
12825 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12828 maybe_strip_output (info
, htab
->brlt
);
12829 if (htab
->glink_eh_frame
!= NULL
)
12830 maybe_strip_output (info
, htab
->glink_eh_frame
);
12835 /* Called after we have determined section placement. If sections
12836 move, we'll be called again. Provide a value for TOCstart. */
12839 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12842 bfd_vma TOCstart
, adjust
;
12846 struct elf_link_hash_entry
*h
;
12847 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12849 if (is_elf_hash_table (htab
)
12850 && htab
->hgot
!= NULL
)
12854 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12855 if (is_elf_hash_table (htab
))
12859 && h
->root
.type
== bfd_link_hash_defined
12860 && !h
->root
.linker_def
12861 && (!is_elf_hash_table (htab
)
12862 || h
->def_regular
))
12864 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12865 + h
->root
.u
.def
.section
->output_offset
12866 + h
->root
.u
.def
.section
->output_section
->vma
);
12867 _bfd_set_gp_value (obfd
, TOCstart
);
12872 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12873 order. The TOC starts where the first of these sections starts. */
12874 s
= bfd_get_section_by_name (obfd
, ".got");
12875 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12876 s
= bfd_get_section_by_name (obfd
, ".toc");
12877 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12878 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12879 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12880 s
= bfd_get_section_by_name (obfd
, ".plt");
12881 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12883 /* This may happen for
12884 o references to TOC base (SYM@toc / TOC[tc0]) without a
12886 o bad linker script
12887 o --gc-sections and empty TOC sections
12889 FIXME: Warn user? */
12891 /* Look for a likely section. We probably won't even be
12893 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12894 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12896 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12899 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12900 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12901 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12904 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12905 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12909 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12910 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12916 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12918 /* Force alignment. */
12919 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12920 TOCstart
-= adjust
;
12921 _bfd_set_gp_value (obfd
, TOCstart
);
12923 if (info
!= NULL
&& s
!= NULL
)
12925 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12929 if (htab
->elf
.hgot
!= NULL
)
12931 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12932 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12937 struct bfd_link_hash_entry
*bh
= NULL
;
12938 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12939 s
, TOC_BASE_OFF
- adjust
,
12940 NULL
, FALSE
, FALSE
, &bh
);
12946 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12947 write out any global entry stubs. */
12950 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12952 struct bfd_link_info
*info
;
12953 struct ppc_link_hash_table
*htab
;
12954 struct plt_entry
*pent
;
12957 if (h
->root
.type
== bfd_link_hash_indirect
)
12960 if (!h
->pointer_equality_needed
)
12963 if (h
->def_regular
)
12967 htab
= ppc_hash_table (info
);
12972 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12973 if (pent
->plt
.offset
!= (bfd_vma
) -1
12974 && pent
->addend
== 0)
12980 p
= s
->contents
+ h
->root
.u
.def
.value
;
12981 plt
= htab
->elf
.splt
;
12982 if (!htab
->elf
.dynamic_sections_created
12983 || h
->dynindx
== -1)
12984 plt
= htab
->elf
.iplt
;
12985 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12986 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12988 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12990 info
->callbacks
->einfo
12991 (_("%P: linkage table error against `%T'\n"),
12992 h
->root
.root
.string
);
12993 bfd_set_error (bfd_error_bad_value
);
12994 htab
->stub_error
= TRUE
;
12997 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12998 if (htab
->params
->emit_stub_syms
)
13000 size_t len
= strlen (h
->root
.root
.string
);
13001 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13006 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13007 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13010 if (h
->root
.type
== bfd_link_hash_new
)
13012 h
->root
.type
= bfd_link_hash_defined
;
13013 h
->root
.u
.def
.section
= s
;
13014 h
->root
.u
.def
.value
= p
- s
->contents
;
13015 h
->ref_regular
= 1;
13016 h
->def_regular
= 1;
13017 h
->ref_regular_nonweak
= 1;
13018 h
->forced_local
= 1;
13020 h
->root
.linker_def
= 1;
13024 if (PPC_HA (off
) != 0)
13026 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13029 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13031 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13033 bfd_put_32 (s
->owner
, BCTR
, p
);
13039 /* Build all the stubs associated with the current output file.
13040 The stubs are kept in a hash table attached to the main linker
13041 hash table. This function is called via gldelf64ppc_finish. */
13044 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13047 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13048 struct map_stub
*group
;
13049 asection
*stub_sec
;
13051 int stub_sec_count
= 0;
13056 /* Allocate memory to hold the linker stubs. */
13057 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13058 if ((stub_sec
= group
->stub_sec
) != NULL
13059 && stub_sec
->size
!= 0)
13061 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13062 if (stub_sec
->contents
== NULL
)
13064 stub_sec
->size
= 0;
13067 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13072 /* Build the .glink plt call stub. */
13073 if (htab
->params
->emit_stub_syms
)
13075 struct elf_link_hash_entry
*h
;
13076 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13077 TRUE
, FALSE
, FALSE
);
13080 if (h
->root
.type
== bfd_link_hash_new
)
13082 h
->root
.type
= bfd_link_hash_defined
;
13083 h
->root
.u
.def
.section
= htab
->glink
;
13084 h
->root
.u
.def
.value
= 8;
13085 h
->ref_regular
= 1;
13086 h
->def_regular
= 1;
13087 h
->ref_regular_nonweak
= 1;
13088 h
->forced_local
= 1;
13090 h
->root
.linker_def
= 1;
13093 plt0
= (htab
->elf
.splt
->output_section
->vma
13094 + htab
->elf
.splt
->output_offset
13096 if (info
->emitrelocations
)
13098 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13101 r
->r_offset
= (htab
->glink
->output_offset
13102 + htab
->glink
->output_section
->vma
);
13103 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13104 r
->r_addend
= plt0
;
13106 p
= htab
->glink
->contents
;
13107 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13108 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13112 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13114 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13116 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13118 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13120 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13122 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13124 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13126 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13128 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13130 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13135 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13137 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13139 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13141 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13143 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13145 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13147 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13149 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13151 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13153 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13155 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13157 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13159 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13162 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13164 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13166 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13170 /* Build the .glink lazy link call stubs. */
13172 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13178 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13183 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13185 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13190 bfd_put_32 (htab
->glink
->owner
,
13191 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13196 /* Build .glink global entry stubs. */
13197 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13198 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13201 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13203 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13205 if (htab
->brlt
->contents
== NULL
)
13208 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13210 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13211 htab
->relbrlt
->size
);
13212 if (htab
->relbrlt
->contents
== NULL
)
13216 /* Build the stubs as directed by the stub hash table. */
13217 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13219 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13220 if (group
->needs_save_res
)
13222 stub_sec
= group
->stub_sec
;
13223 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13225 if (htab
->params
->emit_stub_syms
)
13229 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13230 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13233 stub_sec
->size
+= htab
->sfpr
->size
;
13236 if (htab
->relbrlt
!= NULL
)
13237 htab
->relbrlt
->reloc_count
= 0;
13239 if (htab
->params
->plt_stub_align
!= 0)
13240 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13241 if ((stub_sec
= group
->stub_sec
) != NULL
)
13242 stub_sec
->size
= ((stub_sec
->size
13243 + (1 << htab
->params
->plt_stub_align
) - 1)
13244 & -(1 << htab
->params
->plt_stub_align
));
13246 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13247 if ((stub_sec
= group
->stub_sec
) != NULL
)
13249 stub_sec_count
+= 1;
13250 if (stub_sec
->rawsize
!= stub_sec
->size
13251 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13252 || stub_sec
->rawsize
< stub_sec
->size
))
13258 htab
->stub_error
= TRUE
;
13259 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13262 if (htab
->stub_error
)
13268 *stats
= bfd_malloc (500);
13269 if (*stats
== NULL
)
13272 len
= sprintf (*stats
,
13273 ngettext ("linker stubs in %u group\n",
13274 "linker stubs in %u groups\n",
13277 sprintf (*stats
+ len
, _(" branch %lu\n"
13278 " toc adjust %lu\n"
13279 " long branch %lu\n"
13280 " long toc adj %lu\n"
13282 " plt call toc %lu\n"
13283 " global entry %lu"),
13284 htab
->stub_count
[ppc_stub_long_branch
- 1],
13285 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13286 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13287 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13288 htab
->stub_count
[ppc_stub_plt_call
- 1],
13289 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13290 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13295 /* What to do when ld finds relocations against symbols defined in
13296 discarded sections. */
13298 static unsigned int
13299 ppc64_elf_action_discarded (asection
*sec
)
13301 if (strcmp (".opd", sec
->name
) == 0)
13304 if (strcmp (".toc", sec
->name
) == 0)
13307 if (strcmp (".toc1", sec
->name
) == 0)
13310 return _bfd_elf_default_action_discarded (sec
);
13313 /* The RELOCATE_SECTION function is called by the ELF backend linker
13314 to handle the relocations for a section.
13316 The relocs are always passed as Rela structures; if the section
13317 actually uses Rel structures, the r_addend field will always be
13320 This function is responsible for adjust the section contents as
13321 necessary, and (if using Rela relocs and generating a
13322 relocatable output file) adjusting the reloc addend as
13325 This function does not have to worry about setting the reloc
13326 address or the reloc symbol index.
13328 LOCAL_SYMS is a pointer to the swapped in local symbols.
13330 LOCAL_SECTIONS is an array giving the section in the input file
13331 corresponding to the st_shndx field of each local symbol.
13333 The global hash table entry for the global symbols can be found
13334 via elf_sym_hashes (input_bfd).
13336 When generating relocatable output, this function must handle
13337 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13338 going to be the section symbol corresponding to the output
13339 section, which means that the addend must be adjusted
13343 ppc64_elf_relocate_section (bfd
*output_bfd
,
13344 struct bfd_link_info
*info
,
13346 asection
*input_section
,
13347 bfd_byte
*contents
,
13348 Elf_Internal_Rela
*relocs
,
13349 Elf_Internal_Sym
*local_syms
,
13350 asection
**local_sections
)
13352 struct ppc_link_hash_table
*htab
;
13353 Elf_Internal_Shdr
*symtab_hdr
;
13354 struct elf_link_hash_entry
**sym_hashes
;
13355 Elf_Internal_Rela
*rel
;
13356 Elf_Internal_Rela
*wrel
;
13357 Elf_Internal_Rela
*relend
;
13358 Elf_Internal_Rela outrel
;
13360 struct got_entry
**local_got_ents
;
13362 bfd_boolean ret
= TRUE
;
13363 bfd_boolean is_opd
;
13364 /* Assume 'at' branch hints. */
13365 bfd_boolean is_isa_v2
= TRUE
;
13366 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13368 /* Initialize howto table if needed. */
13369 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13372 htab
= ppc_hash_table (info
);
13376 /* Don't relocate stub sections. */
13377 if (input_section
->owner
== htab
->params
->stub_bfd
)
13380 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13382 local_got_ents
= elf_local_got_ents (input_bfd
);
13383 TOCstart
= elf_gp (output_bfd
);
13384 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13385 sym_hashes
= elf_sym_hashes (input_bfd
);
13386 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13388 rel
= wrel
= relocs
;
13389 relend
= relocs
+ input_section
->reloc_count
;
13390 for (; rel
< relend
; wrel
++, rel
++)
13392 enum elf_ppc64_reloc_type r_type
;
13394 bfd_reloc_status_type r
;
13395 Elf_Internal_Sym
*sym
;
13397 struct elf_link_hash_entry
*h_elf
;
13398 struct ppc_link_hash_entry
*h
;
13399 struct ppc_link_hash_entry
*fdh
;
13400 const char *sym_name
;
13401 unsigned long r_symndx
, toc_symndx
;
13402 bfd_vma toc_addend
;
13403 unsigned char tls_mask
, tls_gd
, tls_type
;
13404 unsigned char sym_type
;
13405 bfd_vma relocation
;
13406 bfd_boolean unresolved_reloc
;
13407 bfd_boolean warned
;
13408 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13411 struct ppc_stub_hash_entry
*stub_entry
;
13412 bfd_vma max_br_offset
;
13414 Elf_Internal_Rela orig_rel
;
13415 reloc_howto_type
*howto
;
13416 struct reloc_howto_struct alt_howto
;
13421 r_type
= ELF64_R_TYPE (rel
->r_info
);
13422 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13424 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13425 symbol of the previous ADDR64 reloc. The symbol gives us the
13426 proper TOC base to use. */
13427 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13429 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13431 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13437 unresolved_reloc
= FALSE
;
13440 if (r_symndx
< symtab_hdr
->sh_info
)
13442 /* It's a local symbol. */
13443 struct _opd_sec_data
*opd
;
13445 sym
= local_syms
+ r_symndx
;
13446 sec
= local_sections
[r_symndx
];
13447 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13448 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13449 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13450 opd
= get_opd_info (sec
);
13451 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13453 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13459 /* If this is a relocation against the opd section sym
13460 and we have edited .opd, adjust the reloc addend so
13461 that ld -r and ld --emit-relocs output is correct.
13462 If it is a reloc against some other .opd symbol,
13463 then the symbol value will be adjusted later. */
13464 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13465 rel
->r_addend
+= adjust
;
13467 relocation
+= adjust
;
13473 bfd_boolean ignored
;
13475 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13476 r_symndx
, symtab_hdr
, sym_hashes
,
13477 h_elf
, sec
, relocation
,
13478 unresolved_reloc
, warned
, ignored
);
13479 sym_name
= h_elf
->root
.root
.string
;
13480 sym_type
= h_elf
->type
;
13482 && sec
->owner
== output_bfd
13483 && strcmp (sec
->name
, ".opd") == 0)
13485 /* This is a symbol defined in a linker script. All
13486 such are defined in output sections, even those
13487 defined by simple assignment from a symbol defined in
13488 an input section. Transfer the symbol to an
13489 appropriate input .opd section, so that a branch to
13490 this symbol will be mapped to the location specified
13491 by the opd entry. */
13492 struct bfd_link_order
*lo
;
13493 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13494 if (lo
->type
== bfd_indirect_link_order
)
13496 asection
*isec
= lo
->u
.indirect
.section
;
13497 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13498 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13501 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13502 h_elf
->root
.u
.def
.section
= isec
;
13509 h
= (struct ppc_link_hash_entry
*) h_elf
;
13511 if (sec
!= NULL
&& discarded_section (sec
))
13513 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13514 input_bfd
, input_section
,
13515 contents
+ rel
->r_offset
);
13516 wrel
->r_offset
= rel
->r_offset
;
13518 wrel
->r_addend
= 0;
13520 /* For ld -r, remove relocations in debug sections against
13521 symbols defined in discarded sections. Not done for
13522 non-debug to preserve relocs in .eh_frame which the
13523 eh_frame editing code expects to be present. */
13524 if (bfd_link_relocatable (info
)
13525 && (input_section
->flags
& SEC_DEBUGGING
))
13531 if (bfd_link_relocatable (info
))
13534 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13536 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13537 sec
= bfd_abs_section_ptr
;
13538 unresolved_reloc
= FALSE
;
13541 /* TLS optimizations. Replace instruction sequences and relocs
13542 based on information we collected in tls_optimize. We edit
13543 RELOCS so that --emit-relocs will output something sensible
13544 for the final instruction stream. */
13549 tls_mask
= h
->tls_mask
;
13550 else if (local_got_ents
!= NULL
)
13552 struct plt_entry
**local_plt
= (struct plt_entry
**)
13553 (local_got_ents
+ symtab_hdr
->sh_info
);
13554 unsigned char *lgot_masks
= (unsigned char *)
13555 (local_plt
+ symtab_hdr
->sh_info
);
13556 tls_mask
= lgot_masks
[r_symndx
];
13559 && (r_type
== R_PPC64_TLS
13560 || r_type
== R_PPC64_TLSGD
13561 || r_type
== R_PPC64_TLSLD
))
13563 /* Check for toc tls entries. */
13564 unsigned char *toc_tls
;
13566 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13567 &local_syms
, rel
, input_bfd
))
13571 tls_mask
= *toc_tls
;
13574 /* Check that tls relocs are used with tls syms, and non-tls
13575 relocs are used with non-tls syms. */
13576 if (r_symndx
!= STN_UNDEF
13577 && r_type
!= R_PPC64_NONE
13579 || h
->elf
.root
.type
== bfd_link_hash_defined
13580 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13581 && (IS_PPC64_TLS_RELOC (r_type
)
13582 != (sym_type
== STT_TLS
13583 || (sym_type
== STT_SECTION
13584 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13587 && (r_type
== R_PPC64_TLS
13588 || r_type
== R_PPC64_TLSGD
13589 || r_type
== R_PPC64_TLSLD
))
13590 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13593 info
->callbacks
->einfo
13594 (!IS_PPC64_TLS_RELOC (r_type
)
13595 /* xgettext:c-format */
13596 ? _("%H: %s used with TLS symbol `%T'\n")
13597 /* xgettext:c-format */
13598 : _("%H: %s used with non-TLS symbol `%T'\n"),
13599 input_bfd
, input_section
, rel
->r_offset
,
13600 ppc64_elf_howto_table
[r_type
]->name
,
13604 /* Ensure reloc mapping code below stays sane. */
13605 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13606 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13607 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13608 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13609 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13610 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13611 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13612 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13613 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13614 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13622 case R_PPC64_LO_DS_OPT
:
13623 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13624 if ((insn
& (0x3f << 26)) != 58u << 26)
13626 insn
+= (14u << 26) - (58u << 26);
13627 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13628 r_type
= R_PPC64_TOC16_LO
;
13629 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13632 case R_PPC64_TOC16
:
13633 case R_PPC64_TOC16_LO
:
13634 case R_PPC64_TOC16_DS
:
13635 case R_PPC64_TOC16_LO_DS
:
13637 /* Check for toc tls entries. */
13638 unsigned char *toc_tls
;
13641 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13642 &local_syms
, rel
, input_bfd
);
13648 tls_mask
= *toc_tls
;
13649 if (r_type
== R_PPC64_TOC16_DS
13650 || r_type
== R_PPC64_TOC16_LO_DS
)
13653 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13658 /* If we found a GD reloc pair, then we might be
13659 doing a GD->IE transition. */
13662 tls_gd
= TLS_TPRELGD
;
13663 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13666 else if (retval
== 3)
13668 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13676 case R_PPC64_GOT_TPREL16_HI
:
13677 case R_PPC64_GOT_TPREL16_HA
:
13679 && (tls_mask
& TLS_TPREL
) == 0)
13681 rel
->r_offset
-= d_offset
;
13682 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13683 r_type
= R_PPC64_NONE
;
13684 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13688 case R_PPC64_GOT_TPREL16_DS
:
13689 case R_PPC64_GOT_TPREL16_LO_DS
:
13691 && (tls_mask
& TLS_TPREL
) == 0)
13694 insn
= bfd_get_32 (input_bfd
,
13695 contents
+ rel
->r_offset
- d_offset
);
13697 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13698 bfd_put_32 (input_bfd
, insn
,
13699 contents
+ rel
->r_offset
- d_offset
);
13700 r_type
= R_PPC64_TPREL16_HA
;
13701 if (toc_symndx
!= 0)
13703 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13704 rel
->r_addend
= toc_addend
;
13705 /* We changed the symbol. Start over in order to
13706 get h, sym, sec etc. right. */
13710 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13716 && (tls_mask
& TLS_TPREL
) == 0)
13718 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13719 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13722 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13723 /* Was PPC64_TLS which sits on insn boundary, now
13724 PPC64_TPREL16_LO which is at low-order half-word. */
13725 rel
->r_offset
+= d_offset
;
13726 r_type
= R_PPC64_TPREL16_LO
;
13727 if (toc_symndx
!= 0)
13729 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13730 rel
->r_addend
= toc_addend
;
13731 /* We changed the symbol. Start over in order to
13732 get h, sym, sec etc. right. */
13736 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13740 case R_PPC64_GOT_TLSGD16_HI
:
13741 case R_PPC64_GOT_TLSGD16_HA
:
13742 tls_gd
= TLS_TPRELGD
;
13743 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13747 case R_PPC64_GOT_TLSLD16_HI
:
13748 case R_PPC64_GOT_TLSLD16_HA
:
13749 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13752 if ((tls_mask
& tls_gd
) != 0)
13753 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13754 + R_PPC64_GOT_TPREL16_DS
);
13757 rel
->r_offset
-= d_offset
;
13758 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13759 r_type
= R_PPC64_NONE
;
13761 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13765 case R_PPC64_GOT_TLSGD16
:
13766 case R_PPC64_GOT_TLSGD16_LO
:
13767 tls_gd
= TLS_TPRELGD
;
13768 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13772 case R_PPC64_GOT_TLSLD16
:
13773 case R_PPC64_GOT_TLSLD16_LO
:
13774 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13776 unsigned int insn1
, insn2
;
13780 offset
= (bfd_vma
) -1;
13781 /* If not using the newer R_PPC64_TLSGD/LD to mark
13782 __tls_get_addr calls, we must trust that the call
13783 stays with its arg setup insns, ie. that the next
13784 reloc is the __tls_get_addr call associated with
13785 the current reloc. Edit both insns. */
13786 if (input_section
->has_tls_get_addr_call
13787 && rel
+ 1 < relend
13788 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13789 htab
->tls_get_addr
,
13790 htab
->tls_get_addr_fd
))
13791 offset
= rel
[1].r_offset
;
13792 /* We read the low GOT_TLS (or TOC16) insn because we
13793 need to keep the destination reg. It may be
13794 something other than the usual r3, and moved to r3
13795 before the call by intervening code. */
13796 insn1
= bfd_get_32 (input_bfd
,
13797 contents
+ rel
->r_offset
- d_offset
);
13798 if ((tls_mask
& tls_gd
) != 0)
13801 insn1
&= (0x1f << 21) | (0x1f << 16);
13802 insn1
|= 58 << 26; /* ld */
13803 insn2
= 0x7c636a14; /* add 3,3,13 */
13804 if (offset
!= (bfd_vma
) -1)
13805 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13806 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13807 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13808 + R_PPC64_GOT_TPREL16_DS
);
13810 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13811 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13816 insn1
&= 0x1f << 21;
13817 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13818 insn2
= 0x38630000; /* addi 3,3,0 */
13821 /* Was an LD reloc. */
13823 sec
= local_sections
[toc_symndx
];
13825 r_symndx
< symtab_hdr
->sh_info
;
13827 if (local_sections
[r_symndx
] == sec
)
13829 if (r_symndx
>= symtab_hdr
->sh_info
)
13830 r_symndx
= STN_UNDEF
;
13831 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13832 if (r_symndx
!= STN_UNDEF
)
13833 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13834 + sec
->output_offset
13835 + sec
->output_section
->vma
);
13837 else if (toc_symndx
!= 0)
13839 r_symndx
= toc_symndx
;
13840 rel
->r_addend
= toc_addend
;
13842 r_type
= R_PPC64_TPREL16_HA
;
13843 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13844 if (offset
!= (bfd_vma
) -1)
13846 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13847 R_PPC64_TPREL16_LO
);
13848 rel
[1].r_offset
= offset
+ d_offset
;
13849 rel
[1].r_addend
= rel
->r_addend
;
13852 bfd_put_32 (input_bfd
, insn1
,
13853 contents
+ rel
->r_offset
- d_offset
);
13854 if (offset
!= (bfd_vma
) -1)
13855 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13856 if ((tls_mask
& tls_gd
) == 0
13857 && (tls_gd
== 0 || toc_symndx
!= 0))
13859 /* We changed the symbol. Start over in order
13860 to get h, sym, sec etc. right. */
13866 case R_PPC64_TLSGD
:
13867 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13869 unsigned int insn2
;
13870 bfd_vma offset
= rel
->r_offset
;
13872 if ((tls_mask
& TLS_TPRELGD
) != 0)
13875 r_type
= R_PPC64_NONE
;
13876 insn2
= 0x7c636a14; /* add 3,3,13 */
13881 if (toc_symndx
!= 0)
13883 r_symndx
= toc_symndx
;
13884 rel
->r_addend
= toc_addend
;
13886 r_type
= R_PPC64_TPREL16_LO
;
13887 rel
->r_offset
= offset
+ d_offset
;
13888 insn2
= 0x38630000; /* addi 3,3,0 */
13890 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13891 /* Zap the reloc on the _tls_get_addr call too. */
13892 BFD_ASSERT (offset
== rel
[1].r_offset
);
13893 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13894 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13895 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13900 case R_PPC64_TLSLD
:
13901 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13903 unsigned int insn2
;
13904 bfd_vma offset
= rel
->r_offset
;
13907 sec
= local_sections
[toc_symndx
];
13909 r_symndx
< symtab_hdr
->sh_info
;
13911 if (local_sections
[r_symndx
] == sec
)
13913 if (r_symndx
>= symtab_hdr
->sh_info
)
13914 r_symndx
= STN_UNDEF
;
13915 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13916 if (r_symndx
!= STN_UNDEF
)
13917 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13918 + sec
->output_offset
13919 + sec
->output_section
->vma
);
13921 r_type
= R_PPC64_TPREL16_LO
;
13922 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13923 rel
->r_offset
= offset
+ d_offset
;
13924 /* Zap the reloc on the _tls_get_addr call too. */
13925 BFD_ASSERT (offset
== rel
[1].r_offset
);
13926 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13927 insn2
= 0x38630000; /* addi 3,3,0 */
13928 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13933 case R_PPC64_DTPMOD64
:
13934 if (rel
+ 1 < relend
13935 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13936 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13938 if ((tls_mask
& TLS_GD
) == 0)
13940 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13941 if ((tls_mask
& TLS_TPRELGD
) != 0)
13942 r_type
= R_PPC64_TPREL64
;
13945 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13946 r_type
= R_PPC64_NONE
;
13948 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13953 if ((tls_mask
& TLS_LD
) == 0)
13955 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13956 r_type
= R_PPC64_NONE
;
13957 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13962 case R_PPC64_TPREL64
:
13963 if ((tls_mask
& TLS_TPREL
) == 0)
13965 r_type
= R_PPC64_NONE
;
13966 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13970 case R_PPC64_ENTRY
:
13971 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13972 if (!bfd_link_pic (info
)
13973 && !info
->traditional_format
13974 && relocation
+ 0x80008000 <= 0xffffffff)
13976 unsigned int insn1
, insn2
;
13978 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13979 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
13980 if ((insn1
& ~0xfffc) == LD_R2_0R12
13981 && insn2
== ADD_R2_R2_R12
)
13983 bfd_put_32 (input_bfd
,
13984 LIS_R2
+ PPC_HA (relocation
),
13985 contents
+ rel
->r_offset
);
13986 bfd_put_32 (input_bfd
,
13987 ADDI_R2_R2
+ PPC_LO (relocation
),
13988 contents
+ rel
->r_offset
+ 4);
13993 relocation
-= (rel
->r_offset
13994 + input_section
->output_offset
13995 + input_section
->output_section
->vma
);
13996 if (relocation
+ 0x80008000 <= 0xffffffff)
13998 unsigned int insn1
, insn2
;
14000 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14001 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14002 if ((insn1
& ~0xfffc) == LD_R2_0R12
14003 && insn2
== ADD_R2_R2_R12
)
14005 bfd_put_32 (input_bfd
,
14006 ADDIS_R2_R12
+ PPC_HA (relocation
),
14007 contents
+ rel
->r_offset
);
14008 bfd_put_32 (input_bfd
,
14009 ADDI_R2_R2
+ PPC_LO (relocation
),
14010 contents
+ rel
->r_offset
+ 4);
14016 case R_PPC64_REL16_HA
:
14017 /* If we are generating a non-PIC executable, edit
14018 . 0: addis 2,12,.TOC.-0b@ha
14019 . addi 2,2,.TOC.-0b@l
14020 used by ELFv2 global entry points to set up r2, to
14023 if .TOC. is in range. */
14024 if (!bfd_link_pic (info
)
14025 && !info
->traditional_format
14027 && rel
->r_addend
== d_offset
14028 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14029 && rel
+ 1 < relend
14030 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14031 && rel
[1].r_offset
== rel
->r_offset
+ 4
14032 && rel
[1].r_addend
== rel
->r_addend
+ 4
14033 && relocation
+ 0x80008000 <= 0xffffffff)
14035 unsigned int insn1
, insn2
;
14036 bfd_vma offset
= rel
->r_offset
- d_offset
;
14037 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14038 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14039 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14040 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14042 r_type
= R_PPC64_ADDR16_HA
;
14043 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14044 rel
->r_addend
-= d_offset
;
14045 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14046 rel
[1].r_addend
-= d_offset
+ 4;
14047 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14053 /* Handle other relocations that tweak non-addend part of insn. */
14055 max_br_offset
= 1 << 25;
14056 addend
= rel
->r_addend
;
14057 reloc_dest
= DEST_NORMAL
;
14063 case R_PPC64_TOCSAVE
:
14064 if (relocation
+ addend
== (rel
->r_offset
14065 + input_section
->output_offset
14066 + input_section
->output_section
->vma
)
14067 && tocsave_find (htab
, NO_INSERT
,
14068 &local_syms
, rel
, input_bfd
))
14070 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14072 || insn
== CROR_151515
|| insn
== CROR_313131
)
14073 bfd_put_32 (input_bfd
,
14074 STD_R2_0R1
+ STK_TOC (htab
),
14075 contents
+ rel
->r_offset
);
14079 /* Branch taken prediction relocations. */
14080 case R_PPC64_ADDR14_BRTAKEN
:
14081 case R_PPC64_REL14_BRTAKEN
:
14082 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14083 /* Fall through. */
14085 /* Branch not taken prediction relocations. */
14086 case R_PPC64_ADDR14_BRNTAKEN
:
14087 case R_PPC64_REL14_BRNTAKEN
:
14088 insn
|= bfd_get_32 (input_bfd
,
14089 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14090 /* Fall through. */
14092 case R_PPC64_REL14
:
14093 max_br_offset
= 1 << 15;
14094 /* Fall through. */
14096 case R_PPC64_REL24
:
14097 /* Calls to functions with a different TOC, such as calls to
14098 shared objects, need to alter the TOC pointer. This is
14099 done using a linkage stub. A REL24 branching to these
14100 linkage stubs needs to be followed by a nop, as the nop
14101 will be replaced with an instruction to restore the TOC
14106 && h
->oh
->is_func_descriptor
)
14107 fdh
= ppc_follow_link (h
->oh
);
14108 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14110 if (stub_entry
!= NULL
14111 && (stub_entry
->stub_type
== ppc_stub_plt_call
14112 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14113 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14114 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14116 bfd_boolean can_plt_call
= FALSE
;
14118 if (stub_entry
->stub_type
== ppc_stub_plt_call
14120 && htab
->params
->plt_localentry0
!= 0
14121 && is_elfv2_localentry0 (&h
->elf
))
14123 /* The function doesn't use or change r2. */
14124 can_plt_call
= TRUE
;
14127 /* All of these stubs may modify r2, so there must be a
14128 branch and link followed by a nop. The nop is
14129 replaced by an insn to restore r2. */
14130 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14134 br
= bfd_get_32 (input_bfd
,
14135 contents
+ rel
->r_offset
);
14140 nop
= bfd_get_32 (input_bfd
,
14141 contents
+ rel
->r_offset
+ 4);
14143 || nop
== CROR_151515
|| nop
== CROR_313131
)
14146 && (h
== htab
->tls_get_addr_fd
14147 || h
== htab
->tls_get_addr
)
14148 && htab
->params
->tls_get_addr_opt
)
14150 /* Special stub used, leave nop alone. */
14153 bfd_put_32 (input_bfd
,
14154 LD_R2_0R1
+ STK_TOC (htab
),
14155 contents
+ rel
->r_offset
+ 4);
14156 can_plt_call
= TRUE
;
14161 if (!can_plt_call
&& h
!= NULL
)
14163 const char *name
= h
->elf
.root
.root
.string
;
14168 if (strncmp (name
, "__libc_start_main", 17) == 0
14169 && (name
[17] == 0 || name
[17] == '@'))
14171 /* Allow crt1 branch to go via a toc adjusting
14172 stub. Other calls that never return could do
14173 the same, if we could detect such. */
14174 can_plt_call
= TRUE
;
14180 /* g++ as of 20130507 emits self-calls without a
14181 following nop. This is arguably wrong since we
14182 have conflicting information. On the one hand a
14183 global symbol and on the other a local call
14184 sequence, but don't error for this special case.
14185 It isn't possible to cheaply verify we have
14186 exactly such a call. Allow all calls to the same
14188 asection
*code_sec
= sec
;
14190 if (get_opd_info (sec
) != NULL
)
14192 bfd_vma off
= (relocation
+ addend
14193 - sec
->output_section
->vma
14194 - sec
->output_offset
);
14196 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14198 if (code_sec
== input_section
)
14199 can_plt_call
= TRUE
;
14204 if (stub_entry
->stub_type
== ppc_stub_plt_call
14205 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14206 info
->callbacks
->einfo
14207 /* xgettext:c-format */
14208 (_("%H: call to `%T' lacks nop, can't restore toc; "
14209 "recompile with -fPIC\n"),
14210 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14212 info
->callbacks
->einfo
14213 /* xgettext:c-format */
14214 (_("%H: call to `%T' lacks nop, can't restore toc; "
14215 "(-mcmodel=small toc adjust stub)\n"),
14216 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14218 bfd_set_error (bfd_error_bad_value
);
14223 && (stub_entry
->stub_type
== ppc_stub_plt_call
14224 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14225 unresolved_reloc
= FALSE
;
14228 if ((stub_entry
== NULL
14229 || stub_entry
->stub_type
== ppc_stub_long_branch
14230 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14231 && get_opd_info (sec
) != NULL
)
14233 /* The branch destination is the value of the opd entry. */
14234 bfd_vma off
= (relocation
+ addend
14235 - sec
->output_section
->vma
14236 - sec
->output_offset
);
14237 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14238 if (dest
!= (bfd_vma
) -1)
14242 reloc_dest
= DEST_OPD
;
14246 /* If the branch is out of reach we ought to have a long
14248 from
= (rel
->r_offset
14249 + input_section
->output_offset
14250 + input_section
->output_section
->vma
);
14252 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14256 if (stub_entry
!= NULL
14257 && (stub_entry
->stub_type
== ppc_stub_long_branch
14258 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14259 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14260 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14261 || (relocation
+ addend
- from
+ max_br_offset
14262 < 2 * max_br_offset
)))
14263 /* Don't use the stub if this branch is in range. */
14266 if (stub_entry
!= NULL
)
14268 /* Munge up the value and addend so that we call the stub
14269 rather than the procedure directly. */
14270 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14272 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14273 relocation
+= (stub_sec
->output_offset
14274 + stub_sec
->output_section
->vma
14275 + stub_sec
->size
- htab
->sfpr
->size
14276 - htab
->sfpr
->output_offset
14277 - htab
->sfpr
->output_section
->vma
);
14279 relocation
= (stub_entry
->stub_offset
14280 + stub_sec
->output_offset
14281 + stub_sec
->output_section
->vma
);
14283 reloc_dest
= DEST_STUB
;
14285 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14286 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14287 && (ALWAYS_EMIT_R2SAVE
14288 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14289 && rel
+ 1 < relend
14290 && rel
[1].r_offset
== rel
->r_offset
+ 4
14291 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14299 /* Set 'a' bit. This is 0b00010 in BO field for branch
14300 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14301 for branch on CTR insns (BO == 1a00t or 1a01t). */
14302 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14303 insn
|= 0x02 << 21;
14304 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14305 insn
|= 0x08 << 21;
14311 /* Invert 'y' bit if not the default. */
14312 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14313 insn
^= 0x01 << 21;
14316 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14319 /* NOP out calls to undefined weak functions.
14320 We can thus call a weak function without first
14321 checking whether the function is defined. */
14323 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14324 && h
->elf
.dynindx
== -1
14325 && r_type
== R_PPC64_REL24
14329 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14335 /* Set `addend'. */
14340 info
->callbacks
->einfo
14341 /* xgettext:c-format */
14342 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14343 input_bfd
, (int) r_type
, sym_name
);
14345 bfd_set_error (bfd_error_bad_value
);
14351 case R_PPC64_TLSGD
:
14352 case R_PPC64_TLSLD
:
14353 case R_PPC64_TOCSAVE
:
14354 case R_PPC64_GNU_VTINHERIT
:
14355 case R_PPC64_GNU_VTENTRY
:
14356 case R_PPC64_ENTRY
:
14359 /* GOT16 relocations. Like an ADDR16 using the symbol's
14360 address in the GOT as relocation value instead of the
14361 symbol's value itself. Also, create a GOT entry for the
14362 symbol and put the symbol value there. */
14363 case R_PPC64_GOT_TLSGD16
:
14364 case R_PPC64_GOT_TLSGD16_LO
:
14365 case R_PPC64_GOT_TLSGD16_HI
:
14366 case R_PPC64_GOT_TLSGD16_HA
:
14367 tls_type
= TLS_TLS
| TLS_GD
;
14370 case R_PPC64_GOT_TLSLD16
:
14371 case R_PPC64_GOT_TLSLD16_LO
:
14372 case R_PPC64_GOT_TLSLD16_HI
:
14373 case R_PPC64_GOT_TLSLD16_HA
:
14374 tls_type
= TLS_TLS
| TLS_LD
;
14377 case R_PPC64_GOT_TPREL16_DS
:
14378 case R_PPC64_GOT_TPREL16_LO_DS
:
14379 case R_PPC64_GOT_TPREL16_HI
:
14380 case R_PPC64_GOT_TPREL16_HA
:
14381 tls_type
= TLS_TLS
| TLS_TPREL
;
14384 case R_PPC64_GOT_DTPREL16_DS
:
14385 case R_PPC64_GOT_DTPREL16_LO_DS
:
14386 case R_PPC64_GOT_DTPREL16_HI
:
14387 case R_PPC64_GOT_DTPREL16_HA
:
14388 tls_type
= TLS_TLS
| TLS_DTPREL
;
14391 case R_PPC64_GOT16
:
14392 case R_PPC64_GOT16_LO
:
14393 case R_PPC64_GOT16_HI
:
14394 case R_PPC64_GOT16_HA
:
14395 case R_PPC64_GOT16_DS
:
14396 case R_PPC64_GOT16_LO_DS
:
14399 /* Relocation is to the entry for this symbol in the global
14404 unsigned long indx
= 0;
14405 struct got_entry
*ent
;
14407 if (tls_type
== (TLS_TLS
| TLS_LD
)
14409 || !h
->elf
.def_dynamic
))
14410 ent
= ppc64_tlsld_got (input_bfd
);
14415 if (!htab
->elf
.dynamic_sections_created
14416 || h
->elf
.dynindx
== -1
14417 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14418 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14419 /* This is actually a static link, or it is a
14420 -Bsymbolic link and the symbol is defined
14421 locally, or the symbol was forced to be local
14422 because of a version file. */
14426 indx
= h
->elf
.dynindx
;
14427 unresolved_reloc
= FALSE
;
14429 ent
= h
->elf
.got
.glist
;
14433 if (local_got_ents
== NULL
)
14435 ent
= local_got_ents
[r_symndx
];
14438 for (; ent
!= NULL
; ent
= ent
->next
)
14439 if (ent
->addend
== orig_rel
.r_addend
14440 && ent
->owner
== input_bfd
14441 && ent
->tls_type
== tls_type
)
14447 if (ent
->is_indirect
)
14448 ent
= ent
->got
.ent
;
14449 offp
= &ent
->got
.offset
;
14450 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14454 /* The offset must always be a multiple of 8. We use the
14455 least significant bit to record whether we have already
14456 processed this entry. */
14458 if ((off
& 1) != 0)
14462 /* Generate relocs for the dynamic linker, except in
14463 the case of TLSLD where we'll use one entry per
14471 ? h
->elf
.type
== STT_GNU_IFUNC
14472 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14475 relgot
= htab
->elf
.irelplt
;
14477 htab
->local_ifunc_resolver
= 1;
14478 else if (is_static_defined (&h
->elf
))
14479 htab
->maybe_local_ifunc_resolver
= 1;
14482 || (bfd_link_pic (info
)
14484 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14485 || (tls_type
== (TLS_TLS
| TLS_LD
)
14486 && !h
->elf
.def_dynamic
))
14487 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
14488 && bfd_link_executable (info
)
14489 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
14490 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14491 if (relgot
!= NULL
)
14493 outrel
.r_offset
= (got
->output_section
->vma
14494 + got
->output_offset
14496 outrel
.r_addend
= addend
;
14497 if (tls_type
& (TLS_LD
| TLS_GD
))
14499 outrel
.r_addend
= 0;
14500 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14501 if (tls_type
== (TLS_TLS
| TLS_GD
))
14503 loc
= relgot
->contents
;
14504 loc
+= (relgot
->reloc_count
++
14505 * sizeof (Elf64_External_Rela
));
14506 bfd_elf64_swap_reloca_out (output_bfd
,
14508 outrel
.r_offset
+= 8;
14509 outrel
.r_addend
= addend
;
14511 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14514 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14515 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14516 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14517 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14518 else if (indx
!= 0)
14519 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14523 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14525 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14527 /* Write the .got section contents for the sake
14529 loc
= got
->contents
+ off
;
14530 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14534 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14536 outrel
.r_addend
+= relocation
;
14537 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14539 if (htab
->elf
.tls_sec
== NULL
)
14540 outrel
.r_addend
= 0;
14542 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14545 loc
= relgot
->contents
;
14546 loc
+= (relgot
->reloc_count
++
14547 * sizeof (Elf64_External_Rela
));
14548 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14551 /* Init the .got section contents here if we're not
14552 emitting a reloc. */
14555 relocation
+= addend
;
14558 if (htab
->elf
.tls_sec
== NULL
)
14562 if (tls_type
& TLS_LD
)
14565 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14566 if (tls_type
& TLS_TPREL
)
14567 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14570 if (tls_type
& (TLS_GD
| TLS_LD
))
14572 bfd_put_64 (output_bfd
, relocation
,
14573 got
->contents
+ off
+ 8);
14577 bfd_put_64 (output_bfd
, relocation
,
14578 got
->contents
+ off
);
14582 if (off
>= (bfd_vma
) -2)
14585 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14586 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14590 case R_PPC64_PLT16_HA
:
14591 case R_PPC64_PLT16_HI
:
14592 case R_PPC64_PLT16_LO
:
14593 case R_PPC64_PLT32
:
14594 case R_PPC64_PLT64
:
14595 /* Relocation is to the entry for this symbol in the
14596 procedure linkage table. */
14598 struct plt_entry
**plt_list
= NULL
;
14600 plt_list
= &h
->elf
.plt
.plist
;
14601 else if (local_got_ents
!= NULL
)
14603 struct plt_entry
**local_plt
= (struct plt_entry
**)
14604 (local_got_ents
+ symtab_hdr
->sh_info
);
14605 unsigned char *local_got_tls_masks
= (unsigned char *)
14606 (local_plt
+ symtab_hdr
->sh_info
);
14607 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14608 plt_list
= local_plt
+ r_symndx
;
14612 struct plt_entry
*ent
;
14614 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14615 if (ent
->plt
.offset
!= (bfd_vma
) -1
14616 && ent
->addend
== orig_rel
.r_addend
)
14620 plt
= htab
->elf
.splt
;
14621 if (!htab
->elf
.dynamic_sections_created
14623 || h
->elf
.dynindx
== -1)
14624 plt
= htab
->elf
.iplt
;
14625 relocation
= (plt
->output_section
->vma
14626 + plt
->output_offset
14627 + ent
->plt
.offset
);
14629 unresolved_reloc
= FALSE
;
14637 /* Relocation value is TOC base. */
14638 relocation
= TOCstart
;
14639 if (r_symndx
== STN_UNDEF
)
14640 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14641 else if (unresolved_reloc
)
14643 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14644 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14646 unresolved_reloc
= TRUE
;
14649 /* TOC16 relocs. We want the offset relative to the TOC base,
14650 which is the address of the start of the TOC plus 0x8000.
14651 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14653 case R_PPC64_TOC16
:
14654 case R_PPC64_TOC16_LO
:
14655 case R_PPC64_TOC16_HI
:
14656 case R_PPC64_TOC16_DS
:
14657 case R_PPC64_TOC16_LO_DS
:
14658 case R_PPC64_TOC16_HA
:
14659 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14662 /* Relocate against the beginning of the section. */
14663 case R_PPC64_SECTOFF
:
14664 case R_PPC64_SECTOFF_LO
:
14665 case R_PPC64_SECTOFF_HI
:
14666 case R_PPC64_SECTOFF_DS
:
14667 case R_PPC64_SECTOFF_LO_DS
:
14668 case R_PPC64_SECTOFF_HA
:
14670 addend
-= sec
->output_section
->vma
;
14673 case R_PPC64_REL16
:
14674 case R_PPC64_REL16_LO
:
14675 case R_PPC64_REL16_HI
:
14676 case R_PPC64_REL16_HA
:
14677 case R_PPC64_REL16DX_HA
:
14680 case R_PPC64_REL14
:
14681 case R_PPC64_REL14_BRNTAKEN
:
14682 case R_PPC64_REL14_BRTAKEN
:
14683 case R_PPC64_REL24
:
14686 case R_PPC64_TPREL16
:
14687 case R_PPC64_TPREL16_LO
:
14688 case R_PPC64_TPREL16_HI
:
14689 case R_PPC64_TPREL16_HA
:
14690 case R_PPC64_TPREL16_DS
:
14691 case R_PPC64_TPREL16_LO_DS
:
14692 case R_PPC64_TPREL16_HIGH
:
14693 case R_PPC64_TPREL16_HIGHA
:
14694 case R_PPC64_TPREL16_HIGHER
:
14695 case R_PPC64_TPREL16_HIGHERA
:
14696 case R_PPC64_TPREL16_HIGHEST
:
14697 case R_PPC64_TPREL16_HIGHESTA
:
14699 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14700 && h
->elf
.dynindx
== -1)
14702 /* Make this relocation against an undefined weak symbol
14703 resolve to zero. This is really just a tweak, since
14704 code using weak externs ought to check that they are
14705 defined before using them. */
14706 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14708 insn
= bfd_get_32 (input_bfd
, p
);
14709 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14711 bfd_put_32 (input_bfd
, insn
, p
);
14714 if (htab
->elf
.tls_sec
!= NULL
)
14715 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14716 /* The TPREL16 relocs shouldn't really be used in shared
14717 libs or with non-local symbols as that will result in
14718 DT_TEXTREL being set, but support them anyway. */
14721 case R_PPC64_DTPREL16
:
14722 case R_PPC64_DTPREL16_LO
:
14723 case R_PPC64_DTPREL16_HI
:
14724 case R_PPC64_DTPREL16_HA
:
14725 case R_PPC64_DTPREL16_DS
:
14726 case R_PPC64_DTPREL16_LO_DS
:
14727 case R_PPC64_DTPREL16_HIGH
:
14728 case R_PPC64_DTPREL16_HIGHA
:
14729 case R_PPC64_DTPREL16_HIGHER
:
14730 case R_PPC64_DTPREL16_HIGHERA
:
14731 case R_PPC64_DTPREL16_HIGHEST
:
14732 case R_PPC64_DTPREL16_HIGHESTA
:
14733 if (htab
->elf
.tls_sec
!= NULL
)
14734 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14737 case R_PPC64_ADDR64_LOCAL
:
14738 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14743 case R_PPC64_DTPMOD64
:
14748 case R_PPC64_TPREL64
:
14749 if (htab
->elf
.tls_sec
!= NULL
)
14750 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14753 case R_PPC64_DTPREL64
:
14754 if (htab
->elf
.tls_sec
!= NULL
)
14755 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14756 /* Fall through. */
14758 /* Relocations that may need to be propagated if this is a
14760 case R_PPC64_REL30
:
14761 case R_PPC64_REL32
:
14762 case R_PPC64_REL64
:
14763 case R_PPC64_ADDR14
:
14764 case R_PPC64_ADDR14_BRNTAKEN
:
14765 case R_PPC64_ADDR14_BRTAKEN
:
14766 case R_PPC64_ADDR16
:
14767 case R_PPC64_ADDR16_DS
:
14768 case R_PPC64_ADDR16_HA
:
14769 case R_PPC64_ADDR16_HI
:
14770 case R_PPC64_ADDR16_HIGH
:
14771 case R_PPC64_ADDR16_HIGHA
:
14772 case R_PPC64_ADDR16_HIGHER
:
14773 case R_PPC64_ADDR16_HIGHERA
:
14774 case R_PPC64_ADDR16_HIGHEST
:
14775 case R_PPC64_ADDR16_HIGHESTA
:
14776 case R_PPC64_ADDR16_LO
:
14777 case R_PPC64_ADDR16_LO_DS
:
14778 case R_PPC64_ADDR24
:
14779 case R_PPC64_ADDR32
:
14780 case R_PPC64_ADDR64
:
14781 case R_PPC64_UADDR16
:
14782 case R_PPC64_UADDR32
:
14783 case R_PPC64_UADDR64
:
14785 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14788 if (NO_OPD_RELOCS
&& is_opd
)
14791 if (bfd_link_pic (info
)
14793 || h
->dyn_relocs
!= NULL
)
14794 && ((h
!= NULL
&& pc_dynrelocs (h
))
14795 || must_be_dyn_reloc (info
, r_type
)))
14797 ? h
->dyn_relocs
!= NULL
14798 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14800 bfd_boolean skip
, relocate
;
14805 /* When generating a dynamic object, these relocations
14806 are copied into the output file to be resolved at run
14812 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14813 input_section
, rel
->r_offset
);
14814 if (out_off
== (bfd_vma
) -1)
14816 else if (out_off
== (bfd_vma
) -2)
14817 skip
= TRUE
, relocate
= TRUE
;
14818 out_off
+= (input_section
->output_section
->vma
14819 + input_section
->output_offset
);
14820 outrel
.r_offset
= out_off
;
14821 outrel
.r_addend
= rel
->r_addend
;
14823 /* Optimize unaligned reloc use. */
14824 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14825 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14826 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14827 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14828 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14829 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14830 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14831 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14832 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14835 memset (&outrel
, 0, sizeof outrel
);
14836 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14838 && r_type
!= R_PPC64_TOC
)
14840 indx
= h
->elf
.dynindx
;
14841 BFD_ASSERT (indx
!= -1);
14842 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14846 /* This symbol is local, or marked to become local,
14847 or this is an opd section reloc which must point
14848 at a local function. */
14849 outrel
.r_addend
+= relocation
;
14850 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14852 if (is_opd
&& h
!= NULL
)
14854 /* Lie about opd entries. This case occurs
14855 when building shared libraries and we
14856 reference a function in another shared
14857 lib. The same thing happens for a weak
14858 definition in an application that's
14859 overridden by a strong definition in a
14860 shared lib. (I believe this is a generic
14861 bug in binutils handling of weak syms.)
14862 In these cases we won't use the opd
14863 entry in this lib. */
14864 unresolved_reloc
= FALSE
;
14867 && r_type
== R_PPC64_ADDR64
14869 ? h
->elf
.type
== STT_GNU_IFUNC
14870 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14871 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14874 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14876 /* We need to relocate .opd contents for ld.so.
14877 Prelink also wants simple and consistent rules
14878 for relocs. This make all RELATIVE relocs have
14879 *r_offset equal to r_addend. */
14886 ? h
->elf
.type
== STT_GNU_IFUNC
14887 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14889 info
->callbacks
->einfo
14890 /* xgettext:c-format */
14891 (_("%H: %s for indirect "
14892 "function `%T' unsupported\n"),
14893 input_bfd
, input_section
, rel
->r_offset
,
14894 ppc64_elf_howto_table
[r_type
]->name
,
14898 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14900 else if (sec
== NULL
|| sec
->owner
== NULL
)
14902 bfd_set_error (bfd_error_bad_value
);
14909 osec
= sec
->output_section
;
14910 indx
= elf_section_data (osec
)->dynindx
;
14914 if ((osec
->flags
& SEC_READONLY
) == 0
14915 && htab
->elf
.data_index_section
!= NULL
)
14916 osec
= htab
->elf
.data_index_section
;
14918 osec
= htab
->elf
.text_index_section
;
14919 indx
= elf_section_data (osec
)->dynindx
;
14921 BFD_ASSERT (indx
!= 0);
14923 /* We are turning this relocation into one
14924 against a section symbol, so subtract out
14925 the output section's address but not the
14926 offset of the input section in the output
14928 outrel
.r_addend
-= osec
->vma
;
14931 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14935 sreloc
= elf_section_data (input_section
)->sreloc
;
14937 ? h
->elf
.type
== STT_GNU_IFUNC
14938 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14940 sreloc
= htab
->elf
.irelplt
;
14942 htab
->local_ifunc_resolver
= 1;
14943 else if (is_static_defined (&h
->elf
))
14944 htab
->maybe_local_ifunc_resolver
= 1;
14946 if (sreloc
== NULL
)
14949 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14952 loc
= sreloc
->contents
;
14953 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14954 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14956 /* If this reloc is against an external symbol, it will
14957 be computed at runtime, so there's no need to do
14958 anything now. However, for the sake of prelink ensure
14959 that the section contents are a known value. */
14962 unresolved_reloc
= FALSE
;
14963 /* The value chosen here is quite arbitrary as ld.so
14964 ignores section contents except for the special
14965 case of .opd where the contents might be accessed
14966 before relocation. Choose zero, as that won't
14967 cause reloc overflow. */
14970 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14971 to improve backward compatibility with older
14973 if (r_type
== R_PPC64_ADDR64
)
14974 addend
= outrel
.r_addend
;
14975 /* Adjust pc_relative relocs to have zero in *r_offset. */
14976 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14977 addend
= outrel
.r_offset
;
14983 case R_PPC64_GLOB_DAT
:
14984 case R_PPC64_JMP_SLOT
:
14985 case R_PPC64_JMP_IREL
:
14986 case R_PPC64_RELATIVE
:
14987 /* We shouldn't ever see these dynamic relocs in relocatable
14989 /* Fall through. */
14991 case R_PPC64_PLTGOT16
:
14992 case R_PPC64_PLTGOT16_DS
:
14993 case R_PPC64_PLTGOT16_HA
:
14994 case R_PPC64_PLTGOT16_HI
:
14995 case R_PPC64_PLTGOT16_LO
:
14996 case R_PPC64_PLTGOT16_LO_DS
:
14997 case R_PPC64_PLTREL32
:
14998 case R_PPC64_PLTREL64
:
14999 /* These ones haven't been implemented yet. */
15001 info
->callbacks
->einfo
15002 /* xgettext:c-format */
15003 (_("%P: %B: %s is not supported for `%T'\n"),
15005 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15007 bfd_set_error (bfd_error_invalid_operation
);
15012 /* Multi-instruction sequences that access the TOC can be
15013 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15014 to nop; addi rb,r2,x; */
15015 howto
= ppc64_elf_howto_table
[(int) r_type
];
15021 case R_PPC64_GOT_TLSLD16_HI
:
15022 case R_PPC64_GOT_TLSGD16_HI
:
15023 case R_PPC64_GOT_TPREL16_HI
:
15024 case R_PPC64_GOT_DTPREL16_HI
:
15025 case R_PPC64_GOT16_HI
:
15026 case R_PPC64_TOC16_HI
:
15027 /* These relocs would only be useful if building up an
15028 offset to later add to r2, perhaps in an indexed
15029 addressing mode instruction. Don't try to optimize.
15030 Unfortunately, the possibility of someone building up an
15031 offset like this or even with the HA relocs, means that
15032 we need to check the high insn when optimizing the low
15036 case R_PPC64_GOT_TLSLD16_HA
:
15037 case R_PPC64_GOT_TLSGD16_HA
:
15038 case R_PPC64_GOT_TPREL16_HA
:
15039 case R_PPC64_GOT_DTPREL16_HA
:
15040 case R_PPC64_GOT16_HA
:
15041 case R_PPC64_TOC16_HA
:
15042 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15043 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15045 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15046 bfd_put_32 (input_bfd
, NOP
, p
);
15050 case R_PPC64_GOT_TLSLD16_LO
:
15051 case R_PPC64_GOT_TLSGD16_LO
:
15052 case R_PPC64_GOT_TPREL16_LO_DS
:
15053 case R_PPC64_GOT_DTPREL16_LO_DS
:
15054 case R_PPC64_GOT16_LO
:
15055 case R_PPC64_GOT16_LO_DS
:
15056 case R_PPC64_TOC16_LO
:
15057 case R_PPC64_TOC16_LO_DS
:
15058 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15059 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15061 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15062 insn
= bfd_get_32 (input_bfd
, p
);
15063 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15065 /* Transform addic to addi when we change reg. */
15066 insn
&= ~((0x3f << 26) | (0x1f << 16));
15067 insn
|= (14u << 26) | (2 << 16);
15071 insn
&= ~(0x1f << 16);
15074 bfd_put_32 (input_bfd
, insn
, p
);
15078 case R_PPC64_TPREL16_HA
:
15079 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15081 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15082 insn
= bfd_get_32 (input_bfd
, p
);
15083 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15084 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15085 /* xgettext:c-format */
15086 info
->callbacks
->minfo
15087 (_("%H: warning: %s unexpected insn %#x.\n"),
15088 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
15090 bfd_put_32 (input_bfd
, NOP
, p
);
15094 case R_PPC64_TPREL16_LO
:
15095 case R_PPC64_TPREL16_LO_DS
:
15096 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15098 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15099 insn
= bfd_get_32 (input_bfd
, p
);
15100 insn
&= ~(0x1f << 16);
15102 bfd_put_32 (input_bfd
, insn
, p
);
15107 /* Do any further special processing. */
15113 case R_PPC64_REL16_HA
:
15114 case R_PPC64_REL16DX_HA
:
15115 case R_PPC64_ADDR16_HA
:
15116 case R_PPC64_ADDR16_HIGHA
:
15117 case R_PPC64_ADDR16_HIGHERA
:
15118 case R_PPC64_ADDR16_HIGHESTA
:
15119 case R_PPC64_TOC16_HA
:
15120 case R_PPC64_SECTOFF_HA
:
15121 case R_PPC64_TPREL16_HA
:
15122 case R_PPC64_TPREL16_HIGHA
:
15123 case R_PPC64_TPREL16_HIGHERA
:
15124 case R_PPC64_TPREL16_HIGHESTA
:
15125 case R_PPC64_DTPREL16_HA
:
15126 case R_PPC64_DTPREL16_HIGHA
:
15127 case R_PPC64_DTPREL16_HIGHERA
:
15128 case R_PPC64_DTPREL16_HIGHESTA
:
15129 /* It's just possible that this symbol is a weak symbol
15130 that's not actually defined anywhere. In that case,
15131 'sec' would be NULL, and we should leave the symbol
15132 alone (it will be set to zero elsewhere in the link). */
15135 /* Fall through. */
15137 case R_PPC64_GOT16_HA
:
15138 case R_PPC64_PLTGOT16_HA
:
15139 case R_PPC64_PLT16_HA
:
15140 case R_PPC64_GOT_TLSGD16_HA
:
15141 case R_PPC64_GOT_TLSLD16_HA
:
15142 case R_PPC64_GOT_TPREL16_HA
:
15143 case R_PPC64_GOT_DTPREL16_HA
:
15144 /* Add 0x10000 if sign bit in 0:15 is set.
15145 Bits 0:15 are not used. */
15149 case R_PPC64_ADDR16_DS
:
15150 case R_PPC64_ADDR16_LO_DS
:
15151 case R_PPC64_GOT16_DS
:
15152 case R_PPC64_GOT16_LO_DS
:
15153 case R_PPC64_PLT16_LO_DS
:
15154 case R_PPC64_SECTOFF_DS
:
15155 case R_PPC64_SECTOFF_LO_DS
:
15156 case R_PPC64_TOC16_DS
:
15157 case R_PPC64_TOC16_LO_DS
:
15158 case R_PPC64_PLTGOT16_DS
:
15159 case R_PPC64_PLTGOT16_LO_DS
:
15160 case R_PPC64_GOT_TPREL16_DS
:
15161 case R_PPC64_GOT_TPREL16_LO_DS
:
15162 case R_PPC64_GOT_DTPREL16_DS
:
15163 case R_PPC64_GOT_DTPREL16_LO_DS
:
15164 case R_PPC64_TPREL16_DS
:
15165 case R_PPC64_TPREL16_LO_DS
:
15166 case R_PPC64_DTPREL16_DS
:
15167 case R_PPC64_DTPREL16_LO_DS
:
15168 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15170 /* If this reloc is against an lq, lxv, or stxv insn, then
15171 the value must be a multiple of 16. This is somewhat of
15172 a hack, but the "correct" way to do this by defining _DQ
15173 forms of all the _DS relocs bloats all reloc switches in
15174 this file. It doesn't make much sense to use these
15175 relocs in data, so testing the insn should be safe. */
15176 if ((insn
& (0x3f << 26)) == (56u << 26)
15177 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15179 relocation
+= addend
;
15180 addend
= insn
& (mask
^ 3);
15181 if ((relocation
& mask
) != 0)
15183 relocation
^= relocation
& mask
;
15184 info
->callbacks
->einfo
15185 /* xgettext:c-format */
15186 (_("%H: error: %s not a multiple of %u\n"),
15187 input_bfd
, input_section
, rel
->r_offset
,
15190 bfd_set_error (bfd_error_bad_value
);
15197 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15198 because such sections are not SEC_ALLOC and thus ld.so will
15199 not process them. */
15200 if (unresolved_reloc
15201 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15202 && h
->elf
.def_dynamic
)
15203 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15204 rel
->r_offset
) != (bfd_vma
) -1)
15206 info
->callbacks
->einfo
15207 /* xgettext:c-format */
15208 (_("%H: unresolvable %s against `%T'\n"),
15209 input_bfd
, input_section
, rel
->r_offset
,
15211 h
->elf
.root
.root
.string
);
15215 /* 16-bit fields in insns mostly have signed values, but a
15216 few insns have 16-bit unsigned values. Really, we should
15217 have different reloc types. */
15218 if (howto
->complain_on_overflow
!= complain_overflow_dont
15219 && howto
->dst_mask
== 0xffff
15220 && (input_section
->flags
& SEC_CODE
) != 0)
15222 enum complain_overflow complain
= complain_overflow_signed
;
15224 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15225 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15226 complain
= complain_overflow_bitfield
;
15227 else if (howto
->rightshift
== 0
15228 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15229 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15230 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15231 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15232 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15233 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15234 complain
= complain_overflow_unsigned
;
15235 if (howto
->complain_on_overflow
!= complain
)
15237 alt_howto
= *howto
;
15238 alt_howto
.complain_on_overflow
= complain
;
15239 howto
= &alt_howto
;
15243 if (r_type
== R_PPC64_REL16DX_HA
)
15245 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15246 if (rel
->r_offset
+ 4 > input_section
->size
)
15247 r
= bfd_reloc_outofrange
;
15250 relocation
+= addend
;
15251 relocation
-= (rel
->r_offset
15252 + input_section
->output_offset
15253 + input_section
->output_section
->vma
);
15254 relocation
= (bfd_signed_vma
) relocation
>> 16;
15255 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15257 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15258 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15260 if (relocation
+ 0x8000 > 0xffff)
15261 r
= bfd_reloc_overflow
;
15265 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15266 rel
->r_offset
, relocation
, addend
);
15268 if (r
!= bfd_reloc_ok
)
15270 char *more_info
= NULL
;
15271 const char *reloc_name
= howto
->name
;
15273 if (reloc_dest
!= DEST_NORMAL
)
15275 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15276 if (more_info
!= NULL
)
15278 strcpy (more_info
, reloc_name
);
15279 strcat (more_info
, (reloc_dest
== DEST_OPD
15280 ? " (OPD)" : " (stub)"));
15281 reloc_name
= more_info
;
15285 if (r
== bfd_reloc_overflow
)
15287 /* On code like "if (foo) foo();" don't report overflow
15288 on a branch to zero when foo is undefined. */
15290 && (reloc_dest
== DEST_STUB
15292 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15293 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15294 && is_branch_reloc (r_type
))))
15295 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15296 sym_name
, reloc_name
,
15298 input_bfd
, input_section
,
15303 info
->callbacks
->einfo
15304 /* xgettext:c-format */
15305 (_("%H: %s against `%T': error %d\n"),
15306 input_bfd
, input_section
, rel
->r_offset
,
15307 reloc_name
, sym_name
, (int) r
);
15310 if (more_info
!= NULL
)
15320 Elf_Internal_Shdr
*rel_hdr
;
15321 size_t deleted
= rel
- wrel
;
15323 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15324 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15325 if (rel_hdr
->sh_size
== 0)
15327 /* It is too late to remove an empty reloc section. Leave
15329 ??? What is wrong with an empty section??? */
15330 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15333 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15334 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15335 input_section
->reloc_count
-= deleted
;
15338 /* If we're emitting relocations, then shortly after this function
15339 returns, reloc offsets and addends for this section will be
15340 adjusted. Worse, reloc symbol indices will be for the output
15341 file rather than the input. Save a copy of the relocs for
15342 opd_entry_value. */
15343 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15346 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15347 rel
= bfd_alloc (input_bfd
, amt
);
15348 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15349 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15352 memcpy (rel
, relocs
, amt
);
15357 /* Adjust the value of any local symbols in opd sections. */
15360 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15361 const char *name ATTRIBUTE_UNUSED
,
15362 Elf_Internal_Sym
*elfsym
,
15363 asection
*input_sec
,
15364 struct elf_link_hash_entry
*h
)
15366 struct _opd_sec_data
*opd
;
15373 opd
= get_opd_info (input_sec
);
15374 if (opd
== NULL
|| opd
->adjust
== NULL
)
15377 value
= elfsym
->st_value
- input_sec
->output_offset
;
15378 if (!bfd_link_relocatable (info
))
15379 value
-= input_sec
->output_section
->vma
;
15381 adjust
= opd
->adjust
[OPD_NDX (value
)];
15385 elfsym
->st_value
+= adjust
;
15389 /* Finish up dynamic symbol handling. We set the contents of various
15390 dynamic sections here. */
15393 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15394 struct bfd_link_info
*info
,
15395 struct elf_link_hash_entry
*h
,
15396 Elf_Internal_Sym
*sym
)
15398 struct ppc_link_hash_table
*htab
;
15399 struct plt_entry
*ent
;
15400 Elf_Internal_Rela rela
;
15403 htab
= ppc_hash_table (info
);
15407 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15408 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15410 /* This symbol has an entry in the procedure linkage
15411 table. Set it up. */
15412 if (!htab
->elf
.dynamic_sections_created
15413 || h
->dynindx
== -1)
15415 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15417 && (h
->root
.type
== bfd_link_hash_defined
15418 || h
->root
.type
== bfd_link_hash_defweak
));
15419 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15420 + htab
->elf
.iplt
->output_offset
15421 + ent
->plt
.offset
);
15423 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15425 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15426 rela
.r_addend
= (h
->root
.u
.def
.value
15427 + h
->root
.u
.def
.section
->output_offset
15428 + h
->root
.u
.def
.section
->output_section
->vma
15430 loc
= (htab
->elf
.irelplt
->contents
15431 + (htab
->elf
.irelplt
->reloc_count
++
15432 * sizeof (Elf64_External_Rela
)));
15433 htab
->local_ifunc_resolver
= 1;
15437 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15438 + htab
->elf
.splt
->output_offset
15439 + ent
->plt
.offset
);
15440 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15441 rela
.r_addend
= ent
->addend
;
15442 loc
= (htab
->elf
.srelplt
->contents
15443 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15444 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15445 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15446 htab
->maybe_local_ifunc_resolver
= 1;
15448 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15450 if (!htab
->opd_abi
)
15452 if (!h
->def_regular
)
15454 /* Mark the symbol as undefined, rather than as
15455 defined in glink. Leave the value if there were
15456 any relocations where pointer equality matters
15457 (this is a clue for the dynamic linker, to make
15458 function pointer comparisons work between an
15459 application and shared library), otherwise set it
15461 sym
->st_shndx
= SHN_UNDEF
;
15462 if (!h
->pointer_equality_needed
)
15464 else if (!h
->ref_regular_nonweak
)
15466 /* This breaks function pointer comparisons, but
15467 that is better than breaking tests for a NULL
15468 function pointer. */
15477 /* This symbol needs a copy reloc. Set it up. */
15480 if (h
->dynindx
== -1
15481 || (h
->root
.type
!= bfd_link_hash_defined
15482 && h
->root
.type
!= bfd_link_hash_defweak
)
15483 || htab
->elf
.srelbss
== NULL
15484 || htab
->elf
.sreldynrelro
== NULL
)
15487 rela
.r_offset
= (h
->root
.u
.def
.value
15488 + h
->root
.u
.def
.section
->output_section
->vma
15489 + h
->root
.u
.def
.section
->output_offset
);
15490 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15492 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15493 srel
= htab
->elf
.sreldynrelro
;
15495 srel
= htab
->elf
.srelbss
;
15496 loc
= srel
->contents
;
15497 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15498 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15504 /* Used to decide how to sort relocs in an optimal manner for the
15505 dynamic linker, before writing them out. */
15507 static enum elf_reloc_type_class
15508 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15509 const asection
*rel_sec
,
15510 const Elf_Internal_Rela
*rela
)
15512 enum elf_ppc64_reloc_type r_type
;
15513 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15515 if (rel_sec
== htab
->elf
.irelplt
)
15516 return reloc_class_ifunc
;
15518 r_type
= ELF64_R_TYPE (rela
->r_info
);
15521 case R_PPC64_RELATIVE
:
15522 return reloc_class_relative
;
15523 case R_PPC64_JMP_SLOT
:
15524 return reloc_class_plt
;
15526 return reloc_class_copy
;
15528 return reloc_class_normal
;
15532 /* Finish up the dynamic sections. */
15535 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15536 struct bfd_link_info
*info
)
15538 struct ppc_link_hash_table
*htab
;
15542 htab
= ppc_hash_table (info
);
15546 dynobj
= htab
->elf
.dynobj
;
15547 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15549 if (htab
->elf
.dynamic_sections_created
)
15551 Elf64_External_Dyn
*dyncon
, *dynconend
;
15553 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15556 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15557 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15558 for (; dyncon
< dynconend
; dyncon
++)
15560 Elf_Internal_Dyn dyn
;
15563 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15570 case DT_PPC64_GLINK
:
15572 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15573 /* We stupidly defined DT_PPC64_GLINK to be the start
15574 of glink rather than the first entry point, which is
15575 what ld.so needs, and now have a bigger stub to
15576 support automatic multiple TOCs. */
15577 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15581 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15584 dyn
.d_un
.d_ptr
= s
->vma
;
15588 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15589 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15590 if (htab
->has_plt_localentry0
)
15591 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15594 case DT_PPC64_OPDSZ
:
15595 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15598 dyn
.d_un
.d_val
= s
->size
;
15602 s
= htab
->elf
.splt
;
15603 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15607 s
= htab
->elf
.srelplt
;
15608 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15612 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15616 if (htab
->local_ifunc_resolver
)
15617 info
->callbacks
->einfo
15618 (_("%X%P: text relocations and GNU indirect "
15619 "functions will result in a segfault at runtime\n"));
15620 else if (htab
->maybe_local_ifunc_resolver
)
15621 info
->callbacks
->einfo
15622 (_("%P: warning: text relocations and GNU indirect "
15623 "functions may result in a segfault at runtime\n"));
15627 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15631 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15632 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15634 /* Fill in the first entry in the global offset table.
15635 We use it to hold the link-time TOCbase. */
15636 bfd_put_64 (output_bfd
,
15637 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15638 htab
->elf
.sgot
->contents
);
15640 /* Set .got entry size. */
15641 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15644 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15645 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15647 /* Set .plt entry size. */
15648 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15649 = PLT_ENTRY_SIZE (htab
);
15652 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15653 brlt ourselves if emitrelocations. */
15654 if (htab
->brlt
!= NULL
15655 && htab
->brlt
->reloc_count
!= 0
15656 && !_bfd_elf_link_output_relocs (output_bfd
,
15658 elf_section_data (htab
->brlt
)->rela
.hdr
,
15659 elf_section_data (htab
->brlt
)->relocs
,
15663 if (htab
->glink
!= NULL
15664 && htab
->glink
->reloc_count
!= 0
15665 && !_bfd_elf_link_output_relocs (output_bfd
,
15667 elf_section_data (htab
->glink
)->rela
.hdr
,
15668 elf_section_data (htab
->glink
)->relocs
,
15672 if (htab
->glink_eh_frame
!= NULL
15673 && htab
->glink_eh_frame
->size
!= 0)
15677 struct map_stub
*group
;
15680 p
= htab
->glink_eh_frame
->contents
;
15681 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15683 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15684 if (group
->stub_sec
!= NULL
)
15686 /* Offset to stub section. */
15687 val
= (group
->stub_sec
->output_section
->vma
15688 + group
->stub_sec
->output_offset
);
15689 val
-= (htab
->glink_eh_frame
->output_section
->vma
15690 + htab
->glink_eh_frame
->output_offset
15691 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15692 if (val
+ 0x80000000 > 0xffffffff)
15694 info
->callbacks
->einfo
15695 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15696 group
->stub_sec
->name
);
15699 bfd_put_32 (dynobj
, val
, p
+ 8);
15700 p
+= stub_eh_frame_size (group
, align
);
15702 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15704 /* Offset to .glink. */
15705 val
= (htab
->glink
->output_section
->vma
15706 + htab
->glink
->output_offset
15708 val
-= (htab
->glink_eh_frame
->output_section
->vma
15709 + htab
->glink_eh_frame
->output_offset
15710 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15711 if (val
+ 0x80000000 > 0xffffffff)
15713 info
->callbacks
->einfo
15714 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15715 htab
->glink
->name
);
15718 bfd_put_32 (dynobj
, val
, p
+ 8);
15719 p
+= (24 + align
- 1) & -align
;
15722 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15723 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15724 htab
->glink_eh_frame
,
15725 htab
->glink_eh_frame
->contents
))
15729 /* We need to handle writing out multiple GOT sections ourselves,
15730 since we didn't add them to DYNOBJ. We know dynobj is the first
15732 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15736 if (!is_ppc64_elf (dynobj
))
15739 s
= ppc64_elf_tdata (dynobj
)->got
;
15742 && s
->output_section
!= bfd_abs_section_ptr
15743 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15744 s
->contents
, s
->output_offset
,
15747 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15750 && s
->output_section
!= bfd_abs_section_ptr
15751 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15752 s
->contents
, s
->output_offset
,
15760 #include "elf64-target.h"
15762 /* FreeBSD support */
15764 #undef TARGET_LITTLE_SYM
15765 #undef TARGET_LITTLE_NAME
15767 #undef TARGET_BIG_SYM
15768 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15769 #undef TARGET_BIG_NAME
15770 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15773 #define ELF_OSABI ELFOSABI_FREEBSD
15776 #define elf64_bed elf64_powerpc_fbsd_bed
15778 #include "elf64-target.h"