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 /* Chain of aliases referring to a weakdef. */
4005 struct ppc_link_hash_entry
*weakref
;
4007 /* Link between function code and descriptor symbols. */
4008 struct ppc_link_hash_entry
*oh
;
4010 /* Flag function code and descriptor symbols. */
4011 unsigned int is_func
:1;
4012 unsigned int is_func_descriptor
:1;
4013 unsigned int fake
:1;
4015 /* Whether global opd/toc sym has been adjusted or not.
4016 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4017 should be set for all globals defined in any opd/toc section. */
4018 unsigned int adjust_done
:1;
4020 /* Set if this is an out-of-line register save/restore function,
4021 with non-standard calling convention. */
4022 unsigned int save_res
:1;
4024 /* Set if a duplicate symbol with non-zero localentry is detected,
4025 even when the duplicate symbol does not provide a definition. */
4026 unsigned int non_zero_localentry
:1;
4028 /* Contexts in which symbol is used in the GOT (or TOC).
4029 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4030 corresponding relocs are encountered during check_relocs.
4031 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4032 indicate the corresponding GOT entry type is not needed.
4033 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4034 a TPREL one. We use a separate flag rather than setting TPREL
4035 just for convenience in distinguishing the two cases. */
4036 #define TLS_GD 1 /* GD reloc. */
4037 #define TLS_LD 2 /* LD reloc. */
4038 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4039 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4040 #define TLS_TLS 16 /* Any TLS reloc. */
4041 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4042 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4043 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4044 unsigned char tls_mask
;
4047 /* ppc64 ELF linker hash table. */
4049 struct ppc_link_hash_table
4051 struct elf_link_hash_table elf
;
4053 /* The stub hash table. */
4054 struct bfd_hash_table stub_hash_table
;
4056 /* Another hash table for plt_branch stubs. */
4057 struct bfd_hash_table branch_hash_table
;
4059 /* Hash table for function prologue tocsave. */
4060 htab_t tocsave_htab
;
4062 /* Various options and other info passed from the linker. */
4063 struct ppc64_elf_params
*params
;
4065 /* The size of sec_info below. */
4066 unsigned int sec_info_arr_size
;
4068 /* Per-section array of extra section info. Done this way rather
4069 than as part of ppc64_elf_section_data so we have the info for
4070 non-ppc64 sections. */
4073 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4078 /* The section group that this section belongs to. */
4079 struct map_stub
*group
;
4080 /* A temp section list pointer. */
4085 /* Linked list of groups. */
4086 struct map_stub
*group
;
4088 /* Temp used when calculating TOC pointers. */
4091 asection
*toc_first_sec
;
4093 /* Used when adding symbols. */
4094 struct ppc_link_hash_entry
*dot_syms
;
4096 /* Shortcuts to get to dynamic linker sections. */
4101 asection
*glink_eh_frame
;
4103 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4104 struct ppc_link_hash_entry
*tls_get_addr
;
4105 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4107 /* The size of reliplt used by got entry relocs. */
4108 bfd_size_type got_reli_size
;
4111 unsigned long stub_count
[ppc_stub_global_entry
];
4113 /* Number of stubs against global syms. */
4114 unsigned long stub_globals
;
4116 /* Set if we're linking code with function descriptors. */
4117 unsigned int opd_abi
:1;
4119 /* Support for multiple toc sections. */
4120 unsigned int do_multi_toc
:1;
4121 unsigned int multi_toc_needed
:1;
4122 unsigned int second_toc_pass
:1;
4123 unsigned int do_toc_opt
:1;
4125 /* Set if tls optimization is enabled. */
4126 unsigned int do_tls_opt
:1;
4129 unsigned int stub_error
:1;
4131 /* Whether func_desc_adjust needs to be run over symbols. */
4132 unsigned int need_func_desc_adj
:1;
4134 /* Whether there exist local gnu indirect function resolvers,
4135 referenced by dynamic relocations. */
4136 unsigned int local_ifunc_resolver
:1;
4137 unsigned int maybe_local_ifunc_resolver
:1;
4139 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4140 unsigned int has_plt_localentry0
:1;
4142 /* Incremented every time we size stubs. */
4143 unsigned int stub_iteration
;
4145 /* Small local sym cache. */
4146 struct sym_cache sym_cache
;
4149 /* Rename some of the generic section flags to better document how they
4152 /* Nonzero if this section has TLS related relocations. */
4153 #define has_tls_reloc sec_flg0
4155 /* Nonzero if this section has a call to __tls_get_addr. */
4156 #define has_tls_get_addr_call sec_flg1
4158 /* Nonzero if this section has any toc or got relocs. */
4159 #define has_toc_reloc sec_flg2
4161 /* Nonzero if this section has a call to another section that uses
4163 #define makes_toc_func_call sec_flg3
4165 /* Recursion protection when determining above flag. */
4166 #define call_check_in_progress sec_flg4
4167 #define call_check_done sec_flg5
4169 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4171 #define ppc_hash_table(p) \
4172 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4173 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4175 #define ppc_stub_hash_lookup(table, string, create, copy) \
4176 ((struct ppc_stub_hash_entry *) \
4177 bfd_hash_lookup ((table), (string), (create), (copy)))
4179 #define ppc_branch_hash_lookup(table, string, create, copy) \
4180 ((struct ppc_branch_hash_entry *) \
4181 bfd_hash_lookup ((table), (string), (create), (copy)))
4183 /* Create an entry in the stub hash table. */
4185 static struct bfd_hash_entry
*
4186 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4187 struct bfd_hash_table
*table
,
4190 /* Allocate the structure if it has not already been allocated by a
4194 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4199 /* Call the allocation method of the superclass. */
4200 entry
= bfd_hash_newfunc (entry
, table
, string
);
4203 struct ppc_stub_hash_entry
*eh
;
4205 /* Initialize the local fields. */
4206 eh
= (struct ppc_stub_hash_entry
*) entry
;
4207 eh
->stub_type
= ppc_stub_none
;
4209 eh
->stub_offset
= 0;
4210 eh
->target_value
= 0;
4211 eh
->target_section
= NULL
;
4220 /* Create an entry in the branch hash table. */
4222 static struct bfd_hash_entry
*
4223 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4224 struct bfd_hash_table
*table
,
4227 /* Allocate the structure if it has not already been allocated by a
4231 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4236 /* Call the allocation method of the superclass. */
4237 entry
= bfd_hash_newfunc (entry
, table
, string
);
4240 struct ppc_branch_hash_entry
*eh
;
4242 /* Initialize the local fields. */
4243 eh
= (struct ppc_branch_hash_entry
*) entry
;
4251 /* Create an entry in a ppc64 ELF linker hash table. */
4253 static struct bfd_hash_entry
*
4254 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4255 struct bfd_hash_table
*table
,
4258 /* Allocate the structure if it has not already been allocated by a
4262 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4267 /* Call the allocation method of the superclass. */
4268 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4271 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4273 memset (&eh
->u
.stub_cache
, 0,
4274 (sizeof (struct ppc_link_hash_entry
)
4275 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4277 /* When making function calls, old ABI code references function entry
4278 points (dot symbols), while new ABI code references the function
4279 descriptor symbol. We need to make any combination of reference and
4280 definition work together, without breaking archive linking.
4282 For a defined function "foo" and an undefined call to "bar":
4283 An old object defines "foo" and ".foo", references ".bar" (possibly
4285 A new object defines "foo" and references "bar".
4287 A new object thus has no problem with its undefined symbols being
4288 satisfied by definitions in an old object. On the other hand, the
4289 old object won't have ".bar" satisfied by a new object.
4291 Keep a list of newly added dot-symbols. */
4293 if (string
[0] == '.')
4295 struct ppc_link_hash_table
*htab
;
4297 htab
= (struct ppc_link_hash_table
*) table
;
4298 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4299 htab
->dot_syms
= eh
;
4306 struct tocsave_entry
{
4312 tocsave_htab_hash (const void *p
)
4314 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4315 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4319 tocsave_htab_eq (const void *p1
, const void *p2
)
4321 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4322 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4323 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4326 /* Destroy a ppc64 ELF linker hash table. */
4329 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4331 struct ppc_link_hash_table
*htab
;
4333 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4334 if (htab
->tocsave_htab
)
4335 htab_delete (htab
->tocsave_htab
);
4336 bfd_hash_table_free (&htab
->branch_hash_table
);
4337 bfd_hash_table_free (&htab
->stub_hash_table
);
4338 _bfd_elf_link_hash_table_free (obfd
);
4341 /* Create a ppc64 ELF linker hash table. */
4343 static struct bfd_link_hash_table
*
4344 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4346 struct ppc_link_hash_table
*htab
;
4347 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4349 htab
= bfd_zmalloc (amt
);
4353 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4354 sizeof (struct ppc_link_hash_entry
),
4361 /* Init the stub hash table too. */
4362 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4363 sizeof (struct ppc_stub_hash_entry
)))
4365 _bfd_elf_link_hash_table_free (abfd
);
4369 /* And the branch hash table. */
4370 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4371 sizeof (struct ppc_branch_hash_entry
)))
4373 bfd_hash_table_free (&htab
->stub_hash_table
);
4374 _bfd_elf_link_hash_table_free (abfd
);
4378 htab
->tocsave_htab
= htab_try_create (1024,
4382 if (htab
->tocsave_htab
== NULL
)
4384 ppc64_elf_link_hash_table_free (abfd
);
4387 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4389 /* Initializing two fields of the union is just cosmetic. We really
4390 only care about glist, but when compiled on a 32-bit host the
4391 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4392 debugger inspection of these fields look nicer. */
4393 htab
->elf
.init_got_refcount
.refcount
= 0;
4394 htab
->elf
.init_got_refcount
.glist
= NULL
;
4395 htab
->elf
.init_plt_refcount
.refcount
= 0;
4396 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4397 htab
->elf
.init_got_offset
.offset
= 0;
4398 htab
->elf
.init_got_offset
.glist
= NULL
;
4399 htab
->elf
.init_plt_offset
.offset
= 0;
4400 htab
->elf
.init_plt_offset
.glist
= NULL
;
4402 return &htab
->elf
.root
;
4405 /* Create sections for linker generated code. */
4408 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4410 struct ppc_link_hash_table
*htab
;
4413 htab
= ppc_hash_table (info
);
4415 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4416 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4417 if (htab
->params
->save_restore_funcs
)
4419 /* Create .sfpr for code to save and restore fp regs. */
4420 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4422 if (htab
->sfpr
== NULL
4423 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4427 if (bfd_link_relocatable (info
))
4430 /* Create .glink for lazy dynamic linking support. */
4431 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4433 if (htab
->glink
== NULL
4434 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4437 if (!info
->no_ld_generated_unwind_info
)
4439 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4440 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4441 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4444 if (htab
->glink_eh_frame
== NULL
4445 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4449 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4450 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4451 if (htab
->elf
.iplt
== NULL
4452 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4455 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4456 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4458 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4459 if (htab
->elf
.irelplt
== NULL
4460 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4463 /* Create branch lookup table for plt_branch stubs. */
4464 flags
= (SEC_ALLOC
| SEC_LOAD
4465 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4466 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4468 if (htab
->brlt
== NULL
4469 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4472 if (!bfd_link_pic (info
))
4475 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4476 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4477 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4480 if (htab
->relbrlt
== NULL
4481 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4487 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4490 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4491 struct ppc64_elf_params
*params
)
4493 struct ppc_link_hash_table
*htab
;
4495 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4497 /* Always hook our dynamic sections into the first bfd, which is the
4498 linker created stub bfd. This ensures that the GOT header is at
4499 the start of the output TOC section. */
4500 htab
= ppc_hash_table (info
);
4501 htab
->elf
.dynobj
= params
->stub_bfd
;
4502 htab
->params
= params
;
4504 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4507 /* Build a name for an entry in the stub hash table. */
4510 ppc_stub_name (const asection
*input_section
,
4511 const asection
*sym_sec
,
4512 const struct ppc_link_hash_entry
*h
,
4513 const Elf_Internal_Rela
*rel
)
4518 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4519 offsets from a sym as a branch target? In fact, we could
4520 probably assume the addend is always zero. */
4521 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4525 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4526 stub_name
= bfd_malloc (len
);
4527 if (stub_name
== NULL
)
4530 len
= sprintf (stub_name
, "%08x.%s+%x",
4531 input_section
->id
& 0xffffffff,
4532 h
->elf
.root
.root
.string
,
4533 (int) rel
->r_addend
& 0xffffffff);
4537 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4538 stub_name
= bfd_malloc (len
);
4539 if (stub_name
== NULL
)
4542 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4543 input_section
->id
& 0xffffffff,
4544 sym_sec
->id
& 0xffffffff,
4545 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4546 (int) rel
->r_addend
& 0xffffffff);
4548 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4549 stub_name
[len
- 2] = 0;
4553 /* Look up an entry in the stub hash. Stub entries are cached because
4554 creating the stub name takes a bit of time. */
4556 static struct ppc_stub_hash_entry
*
4557 ppc_get_stub_entry (const asection
*input_section
,
4558 const asection
*sym_sec
,
4559 struct ppc_link_hash_entry
*h
,
4560 const Elf_Internal_Rela
*rel
,
4561 struct ppc_link_hash_table
*htab
)
4563 struct ppc_stub_hash_entry
*stub_entry
;
4564 struct map_stub
*group
;
4566 /* If this input section is part of a group of sections sharing one
4567 stub section, then use the id of the first section in the group.
4568 Stub names need to include a section id, as there may well be
4569 more than one stub used to reach say, printf, and we need to
4570 distinguish between them. */
4571 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4575 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4576 && h
->u
.stub_cache
->h
== h
4577 && h
->u
.stub_cache
->group
== group
)
4579 stub_entry
= h
->u
.stub_cache
;
4585 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4586 if (stub_name
== NULL
)
4589 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4590 stub_name
, FALSE
, FALSE
);
4592 h
->u
.stub_cache
= stub_entry
;
4600 /* Add a new stub entry to the stub hash. Not all fields of the new
4601 stub entry are initialised. */
4603 static struct ppc_stub_hash_entry
*
4604 ppc_add_stub (const char *stub_name
,
4606 struct bfd_link_info
*info
)
4608 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4609 struct map_stub
*group
;
4612 struct ppc_stub_hash_entry
*stub_entry
;
4614 group
= htab
->sec_info
[section
->id
].u
.group
;
4615 link_sec
= group
->link_sec
;
4616 stub_sec
= group
->stub_sec
;
4617 if (stub_sec
== NULL
)
4623 namelen
= strlen (link_sec
->name
);
4624 len
= namelen
+ sizeof (STUB_SUFFIX
);
4625 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4629 memcpy (s_name
, link_sec
->name
, namelen
);
4630 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4631 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4632 if (stub_sec
== NULL
)
4634 group
->stub_sec
= stub_sec
;
4637 /* Enter this entry into the linker stub hash table. */
4638 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4640 if (stub_entry
== NULL
)
4642 /* xgettext:c-format */
4643 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4644 section
->owner
, stub_name
);
4648 stub_entry
->group
= group
;
4649 stub_entry
->stub_offset
= 0;
4653 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4654 not already done. */
4657 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4659 asection
*got
, *relgot
;
4661 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4663 if (!is_ppc64_elf (abfd
))
4669 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4672 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4673 | SEC_LINKER_CREATED
);
4675 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4677 || !bfd_set_section_alignment (abfd
, got
, 3))
4680 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4681 flags
| SEC_READONLY
);
4683 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4686 ppc64_elf_tdata (abfd
)->got
= got
;
4687 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4691 /* Follow indirect and warning symbol links. */
4693 static inline struct bfd_link_hash_entry
*
4694 follow_link (struct bfd_link_hash_entry
*h
)
4696 while (h
->type
== bfd_link_hash_indirect
4697 || h
->type
== bfd_link_hash_warning
)
4702 static inline struct elf_link_hash_entry
*
4703 elf_follow_link (struct elf_link_hash_entry
*h
)
4705 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4708 static inline struct ppc_link_hash_entry
*
4709 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4711 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4714 /* Merge PLT info on FROM with that on TO. */
4717 move_plt_plist (struct ppc_link_hash_entry
*from
,
4718 struct ppc_link_hash_entry
*to
)
4720 if (from
->elf
.plt
.plist
!= NULL
)
4722 if (to
->elf
.plt
.plist
!= NULL
)
4724 struct plt_entry
**entp
;
4725 struct plt_entry
*ent
;
4727 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4729 struct plt_entry
*dent
;
4731 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4732 if (dent
->addend
== ent
->addend
)
4734 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4741 *entp
= to
->elf
.plt
.plist
;
4744 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4745 from
->elf
.plt
.plist
= NULL
;
4749 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4752 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4753 struct elf_link_hash_entry
*dir
,
4754 struct elf_link_hash_entry
*ind
)
4756 struct ppc_link_hash_entry
*edir
, *eind
;
4758 edir
= (struct ppc_link_hash_entry
*) dir
;
4759 eind
= (struct ppc_link_hash_entry
*) ind
;
4761 edir
->is_func
|= eind
->is_func
;
4762 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4763 edir
->tls_mask
|= eind
->tls_mask
;
4764 if (eind
->oh
!= NULL
)
4765 edir
->oh
= ppc_follow_link (eind
->oh
);
4767 /* If called to transfer flags for a weakdef during processing
4768 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4769 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4770 if (!(ELIMINATE_COPY_RELOCS
4771 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4772 && edir
->elf
.dynamic_adjusted
))
4773 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4775 if (edir
->elf
.versioned
!= versioned_hidden
)
4776 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4777 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4778 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4779 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4780 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4782 /* If we were called to copy over info for a weak sym, don't copy
4783 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4784 in order to simplify readonly_dynrelocs and save a field in the
4785 symbol hash entry, but that means dyn_relocs can't be used in any
4786 tests about a specific symbol, or affect other symbol flags which
4788 Chain weakdefs so we can get from the weakdef back to an alias.
4789 The list is circular so that we don't need to use u.weakdef as
4790 well as this list to look at all aliases. */
4791 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4793 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4798 cur
= edir
->weakref
;
4803 /* We can be called twice for the same symbols.
4804 Don't make multiple loops. */
4808 } while (cur
!= edir
);
4810 next
= add
->weakref
;
4813 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4814 edir
->weakref
= add
;
4817 } while (add
!= NULL
&& add
!= eind
);
4821 /* Copy over any dynamic relocs we may have on the indirect sym. */
4822 if (eind
->dyn_relocs
!= NULL
)
4824 if (edir
->dyn_relocs
!= NULL
)
4826 struct elf_dyn_relocs
**pp
;
4827 struct elf_dyn_relocs
*p
;
4829 /* Add reloc counts against the indirect sym to the direct sym
4830 list. Merge any entries against the same section. */
4831 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4833 struct elf_dyn_relocs
*q
;
4835 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4836 if (q
->sec
== p
->sec
)
4838 q
->pc_count
+= p
->pc_count
;
4839 q
->count
+= p
->count
;
4846 *pp
= edir
->dyn_relocs
;
4849 edir
->dyn_relocs
= eind
->dyn_relocs
;
4850 eind
->dyn_relocs
= NULL
;
4853 /* Copy over got entries that we may have already seen to the
4854 symbol which just became indirect. */
4855 if (eind
->elf
.got
.glist
!= NULL
)
4857 if (edir
->elf
.got
.glist
!= NULL
)
4859 struct got_entry
**entp
;
4860 struct got_entry
*ent
;
4862 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4864 struct got_entry
*dent
;
4866 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4867 if (dent
->addend
== ent
->addend
4868 && dent
->owner
== ent
->owner
4869 && dent
->tls_type
== ent
->tls_type
)
4871 dent
->got
.refcount
+= ent
->got
.refcount
;
4878 *entp
= edir
->elf
.got
.glist
;
4881 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4882 eind
->elf
.got
.glist
= NULL
;
4885 /* And plt entries. */
4886 move_plt_plist (eind
, edir
);
4888 if (eind
->elf
.dynindx
!= -1)
4890 if (edir
->elf
.dynindx
!= -1)
4891 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4892 edir
->elf
.dynstr_index
);
4893 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4894 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4895 eind
->elf
.dynindx
= -1;
4896 eind
->elf
.dynstr_index
= 0;
4900 /* Find the function descriptor hash entry from the given function code
4901 hash entry FH. Link the entries via their OH fields. */
4903 static struct ppc_link_hash_entry
*
4904 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4906 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4910 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4912 fdh
= (struct ppc_link_hash_entry
*)
4913 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4917 fdh
->is_func_descriptor
= 1;
4923 fdh
= ppc_follow_link (fdh
);
4924 fdh
->is_func_descriptor
= 1;
4929 /* Make a fake function descriptor sym for the undefined code sym FH. */
4931 static struct ppc_link_hash_entry
*
4932 make_fdh (struct bfd_link_info
*info
,
4933 struct ppc_link_hash_entry
*fh
)
4935 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4936 struct bfd_link_hash_entry
*bh
= NULL
;
4937 struct ppc_link_hash_entry
*fdh
;
4938 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4942 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4943 fh
->elf
.root
.root
.string
+ 1,
4944 flags
, bfd_und_section_ptr
, 0,
4945 NULL
, FALSE
, FALSE
, &bh
))
4948 fdh
= (struct ppc_link_hash_entry
*) bh
;
4949 fdh
->elf
.non_elf
= 0;
4951 fdh
->is_func_descriptor
= 1;
4958 /* Fix function descriptor symbols defined in .opd sections to be
4962 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4963 struct bfd_link_info
*info
,
4964 Elf_Internal_Sym
*isym
,
4966 flagword
*flags ATTRIBUTE_UNUSED
,
4970 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4971 && (ibfd
->flags
& DYNAMIC
) == 0
4972 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4973 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4976 && strcmp ((*sec
)->name
, ".opd") == 0)
4980 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4981 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4982 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4984 /* If the symbol is a function defined in .opd, and the function
4985 code is in a discarded group, let it appear to be undefined. */
4986 if (!bfd_link_relocatable (info
)
4987 && (*sec
)->reloc_count
!= 0
4988 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4989 FALSE
) != (bfd_vma
) -1
4990 && discarded_section (code_sec
))
4992 *sec
= bfd_und_section_ptr
;
4993 isym
->st_shndx
= SHN_UNDEF
;
4996 else if (*sec
!= NULL
4997 && strcmp ((*sec
)->name
, ".toc") == 0
4998 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
5000 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5002 htab
->params
->object_in_toc
= 1;
5005 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5007 if (abiversion (ibfd
) == 0)
5008 set_abiversion (ibfd
, 2);
5009 else if (abiversion (ibfd
) == 1)
5011 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
5012 " for ABI version 1\n"), name
);
5013 bfd_set_error (bfd_error_bad_value
);
5021 /* Merge non-visibility st_other attributes: local entry point. */
5024 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5025 const Elf_Internal_Sym
*isym
,
5026 bfd_boolean definition
,
5027 bfd_boolean dynamic
)
5029 if (definition
&& (!dynamic
|| !h
->def_regular
))
5030 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5031 | ELF_ST_VISIBILITY (h
->other
));
5034 /* Hook called on merging a symbol. We use this to clear "fake" since
5035 we now have a real symbol. */
5038 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5039 const Elf_Internal_Sym
*isym
,
5040 asection
**psec ATTRIBUTE_UNUSED
,
5041 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5042 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5043 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5044 const asection
*oldsec ATTRIBUTE_UNUSED
)
5046 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5047 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5048 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5052 /* This function makes an old ABI object reference to ".bar" cause the
5053 inclusion of a new ABI object archive that defines "bar".
5054 NAME is a symbol defined in an archive. Return a symbol in the hash
5055 table that might be satisfied by the archive symbols. */
5057 static struct elf_link_hash_entry
*
5058 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5059 struct bfd_link_info
*info
,
5062 struct elf_link_hash_entry
*h
;
5066 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5068 /* Don't return this sym if it is a fake function descriptor
5069 created by add_symbol_adjust. */
5070 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5076 len
= strlen (name
);
5077 dot_name
= bfd_alloc (abfd
, len
+ 2);
5078 if (dot_name
== NULL
)
5079 return (struct elf_link_hash_entry
*) 0 - 1;
5081 memcpy (dot_name
+ 1, name
, len
+ 1);
5082 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5083 bfd_release (abfd
, dot_name
);
5087 /* This function satisfies all old ABI object references to ".bar" if a
5088 new ABI object defines "bar". Well, at least, undefined dot symbols
5089 are made weak. This stops later archive searches from including an
5090 object if we already have a function descriptor definition. It also
5091 prevents the linker complaining about undefined symbols.
5092 We also check and correct mismatched symbol visibility here. The
5093 most restrictive visibility of the function descriptor and the
5094 function entry symbol is used. */
5097 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5099 struct ppc_link_hash_table
*htab
;
5100 struct ppc_link_hash_entry
*fdh
;
5102 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5103 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5105 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5108 if (eh
->elf
.root
.root
.string
[0] != '.')
5111 htab
= ppc_hash_table (info
);
5115 fdh
= lookup_fdh (eh
, htab
);
5117 && !bfd_link_relocatable (info
)
5118 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5119 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5120 && eh
->elf
.ref_regular
)
5122 /* Make an undefined function descriptor sym, in order to
5123 pull in an --as-needed shared lib. Archives are handled
5125 fdh
= make_fdh (info
, eh
);
5132 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5133 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5135 /* Make both descriptor and entry symbol have the most
5136 constraining visibility of either symbol. */
5137 if (entry_vis
< descr_vis
)
5138 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5139 else if (entry_vis
> descr_vis
)
5140 eh
->elf
.other
+= descr_vis
- entry_vis
;
5142 /* Propagate reference flags from entry symbol to function
5143 descriptor symbol. */
5144 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5145 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5146 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5147 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5149 if (!fdh
->elf
.forced_local
5150 && fdh
->elf
.dynindx
== -1
5151 && fdh
->elf
.versioned
!= versioned_hidden
5152 && (bfd_link_dll (info
)
5153 || fdh
->elf
.def_dynamic
5154 || fdh
->elf
.ref_dynamic
)
5155 && (eh
->elf
.ref_regular
5156 || eh
->elf
.def_regular
))
5158 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5166 /* Set up opd section info and abiversion for IBFD, and process list
5167 of dot-symbols we made in link_hash_newfunc. */
5170 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5172 struct ppc_link_hash_table
*htab
;
5173 struct ppc_link_hash_entry
**p
, *eh
;
5174 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5176 if (opd
!= NULL
&& opd
->size
!= 0)
5178 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5179 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5181 if (abiversion (ibfd
) == 0)
5182 set_abiversion (ibfd
, 1);
5183 else if (abiversion (ibfd
) >= 2)
5185 /* xgettext:c-format */
5186 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5188 ibfd
, abiversion (ibfd
));
5189 bfd_set_error (bfd_error_bad_value
);
5194 if (is_ppc64_elf (info
->output_bfd
))
5196 /* For input files without an explicit abiversion in e_flags
5197 we should have flagged any with symbol st_other bits set
5198 as ELFv1 and above flagged those with .opd as ELFv2.
5199 Set the output abiversion if not yet set, and for any input
5200 still ambiguous, take its abiversion from the output.
5201 Differences in ABI are reported later. */
5202 if (abiversion (info
->output_bfd
) == 0)
5203 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5204 else if (abiversion (ibfd
) == 0)
5205 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5208 htab
= ppc_hash_table (info
);
5212 if (opd
!= NULL
&& opd
->size
!= 0
5213 && (ibfd
->flags
& DYNAMIC
) == 0
5214 && (opd
->flags
& SEC_RELOC
) != 0
5215 && opd
->reloc_count
!= 0
5216 && !bfd_is_abs_section (opd
->output_section
)
5217 && info
->gc_sections
)
5219 /* Garbage collection needs some extra help with .opd sections.
5220 We don't want to necessarily keep everything referenced by
5221 relocs in .opd, as that would keep all functions. Instead,
5222 if we reference an .opd symbol (a function descriptor), we
5223 want to keep the function code symbol's section. This is
5224 easy for global symbols, but for local syms we need to keep
5225 information about the associated function section. */
5227 asection
**opd_sym_map
;
5228 Elf_Internal_Shdr
*symtab_hdr
;
5229 Elf_Internal_Rela
*relocs
, *rel_end
, *rel
;
5231 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5232 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5233 if (opd_sym_map
== NULL
)
5235 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5236 relocs
= _bfd_elf_link_read_relocs (ibfd
, opd
, NULL
, NULL
,
5240 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5241 rel_end
= relocs
+ opd
->reloc_count
- 1;
5242 for (rel
= relocs
; rel
< rel_end
; rel
++)
5244 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
5245 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
5247 if (r_type
== R_PPC64_ADDR64
5248 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
5249 && r_symndx
< symtab_hdr
->sh_info
)
5251 Elf_Internal_Sym
*isym
;
5254 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, ibfd
, r_symndx
);
5257 if (elf_section_data (opd
)->relocs
!= relocs
)
5262 s
= bfd_section_from_elf_index (ibfd
, isym
->st_shndx
);
5263 if (s
!= NULL
&& s
!= opd
)
5264 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5267 if (elf_section_data (opd
)->relocs
!= relocs
)
5271 p
= &htab
->dot_syms
;
5272 while ((eh
= *p
) != NULL
)
5275 if (&eh
->elf
== htab
->elf
.hgot
)
5277 else if (htab
->elf
.hgot
== NULL
5278 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5279 htab
->elf
.hgot
= &eh
->elf
;
5280 else if (abiversion (ibfd
) <= 1)
5282 htab
->need_func_desc_adj
= 1;
5283 if (!add_symbol_adjust (eh
, info
))
5286 p
= &eh
->u
.next_dot_sym
;
5291 /* Undo hash table changes when an --as-needed input file is determined
5292 not to be needed. */
5295 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5296 struct bfd_link_info
*info
,
5297 enum notice_asneeded_action act
)
5299 if (act
== notice_not_needed
)
5301 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5306 htab
->dot_syms
= NULL
;
5308 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5311 /* If --just-symbols against a final linked binary, then assume we need
5312 toc adjusting stubs when calling functions defined there. */
5315 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5317 if ((sec
->flags
& SEC_CODE
) != 0
5318 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5319 && is_ppc64_elf (sec
->owner
))
5321 if (abiversion (sec
->owner
) >= 2
5322 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5323 sec
->has_toc_reloc
= 1;
5325 _bfd_elf_link_just_syms (sec
, info
);
5328 static struct plt_entry
**
5329 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5330 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5332 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5333 struct plt_entry
**local_plt
;
5334 unsigned char *local_got_tls_masks
;
5336 if (local_got_ents
== NULL
)
5338 bfd_size_type size
= symtab_hdr
->sh_info
;
5340 size
*= (sizeof (*local_got_ents
)
5341 + sizeof (*local_plt
)
5342 + sizeof (*local_got_tls_masks
));
5343 local_got_ents
= bfd_zalloc (abfd
, size
);
5344 if (local_got_ents
== NULL
)
5346 elf_local_got_ents (abfd
) = local_got_ents
;
5349 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5351 struct got_entry
*ent
;
5353 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5354 if (ent
->addend
== r_addend
5355 && ent
->owner
== abfd
5356 && ent
->tls_type
== tls_type
)
5360 bfd_size_type amt
= sizeof (*ent
);
5361 ent
= bfd_alloc (abfd
, amt
);
5364 ent
->next
= local_got_ents
[r_symndx
];
5365 ent
->addend
= r_addend
;
5367 ent
->tls_type
= tls_type
;
5368 ent
->is_indirect
= FALSE
;
5369 ent
->got
.refcount
= 0;
5370 local_got_ents
[r_symndx
] = ent
;
5372 ent
->got
.refcount
+= 1;
5375 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5376 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5377 local_got_tls_masks
[r_symndx
] |= tls_type
;
5379 return local_plt
+ r_symndx
;
5383 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5385 struct plt_entry
*ent
;
5387 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5388 if (ent
->addend
== addend
)
5392 bfd_size_type amt
= sizeof (*ent
);
5393 ent
= bfd_alloc (abfd
, amt
);
5397 ent
->addend
= addend
;
5398 ent
->plt
.refcount
= 0;
5401 ent
->plt
.refcount
+= 1;
5406 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5408 return (r_type
== R_PPC64_REL24
5409 || r_type
== R_PPC64_REL14
5410 || r_type
== R_PPC64_REL14_BRTAKEN
5411 || r_type
== R_PPC64_REL14_BRNTAKEN
5412 || r_type
== R_PPC64_ADDR24
5413 || r_type
== R_PPC64_ADDR14
5414 || r_type
== R_PPC64_ADDR14_BRTAKEN
5415 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5418 /* Look through the relocs for a section during the first phase, and
5419 calculate needed space in the global offset table, procedure
5420 linkage table, and dynamic reloc sections. */
5423 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5424 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5426 struct ppc_link_hash_table
*htab
;
5427 Elf_Internal_Shdr
*symtab_hdr
;
5428 struct elf_link_hash_entry
**sym_hashes
;
5429 const Elf_Internal_Rela
*rel
;
5430 const Elf_Internal_Rela
*rel_end
;
5432 struct elf_link_hash_entry
*tga
, *dottga
;
5435 if (bfd_link_relocatable (info
))
5438 /* Don't do anything special with non-loaded, non-alloced sections.
5439 In particular, any relocs in such sections should not affect GOT
5440 and PLT reference counting (ie. we don't allow them to create GOT
5441 or PLT entries), there's no possibility or desire to optimize TLS
5442 relocs, and there's not much point in propagating relocs to shared
5443 libs that the dynamic linker won't relocate. */
5444 if ((sec
->flags
& SEC_ALLOC
) == 0)
5447 BFD_ASSERT (is_ppc64_elf (abfd
));
5449 htab
= ppc_hash_table (info
);
5453 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5454 FALSE
, FALSE
, TRUE
);
5455 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5456 FALSE
, FALSE
, TRUE
);
5457 symtab_hdr
= &elf_symtab_hdr (abfd
);
5458 sym_hashes
= elf_sym_hashes (abfd
);
5460 is_opd
= ppc64_elf_section_data (sec
)->sec_type
== sec_opd
;
5461 rel_end
= relocs
+ sec
->reloc_count
;
5462 for (rel
= relocs
; rel
< rel_end
; rel
++)
5464 unsigned long r_symndx
;
5465 struct elf_link_hash_entry
*h
;
5466 enum elf_ppc64_reloc_type r_type
;
5468 struct _ppc64_elf_section_data
*ppc64_sec
;
5469 struct plt_entry
**ifunc
, **plt_list
;
5471 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5472 if (r_symndx
< symtab_hdr
->sh_info
)
5476 struct ppc_link_hash_entry
*eh
;
5478 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5479 h
= elf_follow_link (h
);
5480 eh
= (struct ppc_link_hash_entry
*) h
;
5482 /* PR15323, ref flags aren't set for references in the same
5484 h
->root
.non_ir_ref_regular
= 1;
5485 if (eh
->is_func
&& eh
->oh
!= NULL
)
5486 eh
->oh
->elf
.root
.non_ir_ref_regular
= 1;
5488 if (h
== htab
->elf
.hgot
)
5489 sec
->has_toc_reloc
= 1;
5496 if (h
->type
== STT_GNU_IFUNC
)
5499 ifunc
= &h
->plt
.plist
;
5504 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5509 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5511 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5512 rel
->r_addend
, PLT_IFUNC
);
5518 r_type
= ELF64_R_TYPE (rel
->r_info
);
5523 /* These special tls relocs tie a call to __tls_get_addr with
5524 its parameter symbol. */
5527 case R_PPC64_GOT_TLSLD16
:
5528 case R_PPC64_GOT_TLSLD16_LO
:
5529 case R_PPC64_GOT_TLSLD16_HI
:
5530 case R_PPC64_GOT_TLSLD16_HA
:
5531 tls_type
= TLS_TLS
| TLS_LD
;
5534 case R_PPC64_GOT_TLSGD16
:
5535 case R_PPC64_GOT_TLSGD16_LO
:
5536 case R_PPC64_GOT_TLSGD16_HI
:
5537 case R_PPC64_GOT_TLSGD16_HA
:
5538 tls_type
= TLS_TLS
| TLS_GD
;
5541 case R_PPC64_GOT_TPREL16_DS
:
5542 case R_PPC64_GOT_TPREL16_LO_DS
:
5543 case R_PPC64_GOT_TPREL16_HI
:
5544 case R_PPC64_GOT_TPREL16_HA
:
5545 if (bfd_link_dll (info
))
5546 info
->flags
|= DF_STATIC_TLS
;
5547 tls_type
= TLS_TLS
| TLS_TPREL
;
5550 case R_PPC64_GOT_DTPREL16_DS
:
5551 case R_PPC64_GOT_DTPREL16_LO_DS
:
5552 case R_PPC64_GOT_DTPREL16_HI
:
5553 case R_PPC64_GOT_DTPREL16_HA
:
5554 tls_type
= TLS_TLS
| TLS_DTPREL
;
5556 sec
->has_tls_reloc
= 1;
5560 case R_PPC64_GOT16_DS
:
5561 case R_PPC64_GOT16_HA
:
5562 case R_PPC64_GOT16_HI
:
5563 case R_PPC64_GOT16_LO
:
5564 case R_PPC64_GOT16_LO_DS
:
5565 /* This symbol requires a global offset table entry. */
5566 sec
->has_toc_reloc
= 1;
5567 if (r_type
== R_PPC64_GOT_TLSLD16
5568 || r_type
== R_PPC64_GOT_TLSGD16
5569 || r_type
== R_PPC64_GOT_TPREL16_DS
5570 || r_type
== R_PPC64_GOT_DTPREL16_DS
5571 || r_type
== R_PPC64_GOT16
5572 || r_type
== R_PPC64_GOT16_DS
)
5574 htab
->do_multi_toc
= 1;
5575 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5578 if (ppc64_elf_tdata (abfd
)->got
== NULL
5579 && !create_got_section (abfd
, info
))
5584 struct ppc_link_hash_entry
*eh
;
5585 struct got_entry
*ent
;
5587 eh
= (struct ppc_link_hash_entry
*) h
;
5588 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5589 if (ent
->addend
== rel
->r_addend
5590 && ent
->owner
== abfd
5591 && ent
->tls_type
== tls_type
)
5595 bfd_size_type amt
= sizeof (*ent
);
5596 ent
= bfd_alloc (abfd
, amt
);
5599 ent
->next
= eh
->elf
.got
.glist
;
5600 ent
->addend
= rel
->r_addend
;
5602 ent
->tls_type
= tls_type
;
5603 ent
->is_indirect
= FALSE
;
5604 ent
->got
.refcount
= 0;
5605 eh
->elf
.got
.glist
= ent
;
5607 ent
->got
.refcount
+= 1;
5608 eh
->tls_mask
|= tls_type
;
5611 /* This is a global offset table entry for a local symbol. */
5612 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5613 rel
->r_addend
, tls_type
))
5616 /* We may also need a plt entry if the symbol turns out to be
5618 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5620 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5625 case R_PPC64_PLT16_HA
:
5626 case R_PPC64_PLT16_HI
:
5627 case R_PPC64_PLT16_LO
:
5630 /* This symbol requires a procedure linkage table entry. */
5635 if (h
->root
.root
.string
[0] == '.'
5636 && h
->root
.root
.string
[1] != '\0')
5637 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5638 plt_list
= &h
->plt
.plist
;
5640 if (plt_list
== NULL
)
5642 /* It does not make sense to have a procedure linkage
5643 table entry for a non-ifunc local symbol. */
5644 info
->callbacks
->einfo
5645 /* xgettext:c-format */
5646 (_("%H: %s reloc against local symbol\n"),
5647 abfd
, sec
, rel
->r_offset
,
5648 ppc64_elf_howto_table
[r_type
]->name
);
5649 bfd_set_error (bfd_error_bad_value
);
5652 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5656 /* The following relocations don't need to propagate the
5657 relocation if linking a shared object since they are
5658 section relative. */
5659 case R_PPC64_SECTOFF
:
5660 case R_PPC64_SECTOFF_LO
:
5661 case R_PPC64_SECTOFF_HI
:
5662 case R_PPC64_SECTOFF_HA
:
5663 case R_PPC64_SECTOFF_DS
:
5664 case R_PPC64_SECTOFF_LO_DS
:
5665 case R_PPC64_DTPREL16
:
5666 case R_PPC64_DTPREL16_LO
:
5667 case R_PPC64_DTPREL16_HI
:
5668 case R_PPC64_DTPREL16_HA
:
5669 case R_PPC64_DTPREL16_DS
:
5670 case R_PPC64_DTPREL16_LO_DS
:
5671 case R_PPC64_DTPREL16_HIGH
:
5672 case R_PPC64_DTPREL16_HIGHA
:
5673 case R_PPC64_DTPREL16_HIGHER
:
5674 case R_PPC64_DTPREL16_HIGHERA
:
5675 case R_PPC64_DTPREL16_HIGHEST
:
5676 case R_PPC64_DTPREL16_HIGHESTA
:
5681 case R_PPC64_REL16_LO
:
5682 case R_PPC64_REL16_HI
:
5683 case R_PPC64_REL16_HA
:
5684 case R_PPC64_REL16DX_HA
:
5687 /* Not supported as a dynamic relocation. */
5688 case R_PPC64_ADDR64_LOCAL
:
5689 if (bfd_link_pic (info
))
5691 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5693 /* xgettext:c-format */
5694 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5695 "in shared libraries and PIEs.\n"),
5696 abfd
, sec
, rel
->r_offset
,
5697 ppc64_elf_howto_table
[r_type
]->name
);
5698 bfd_set_error (bfd_error_bad_value
);
5704 case R_PPC64_TOC16_DS
:
5705 htab
->do_multi_toc
= 1;
5706 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5708 case R_PPC64_TOC16_LO
:
5709 case R_PPC64_TOC16_HI
:
5710 case R_PPC64_TOC16_HA
:
5711 case R_PPC64_TOC16_LO_DS
:
5712 sec
->has_toc_reloc
= 1;
5719 /* This relocation describes the C++ object vtable hierarchy.
5720 Reconstruct it for later use during GC. */
5721 case R_PPC64_GNU_VTINHERIT
:
5722 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5726 /* This relocation describes which C++ vtable entries are actually
5727 used. Record for later use during GC. */
5728 case R_PPC64_GNU_VTENTRY
:
5729 BFD_ASSERT (h
!= NULL
);
5731 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5736 case R_PPC64_REL14_BRTAKEN
:
5737 case R_PPC64_REL14_BRNTAKEN
:
5739 asection
*dest
= NULL
;
5741 /* Heuristic: If jumping outside our section, chances are
5742 we are going to need a stub. */
5745 /* If the sym is weak it may be overridden later, so
5746 don't assume we know where a weak sym lives. */
5747 if (h
->root
.type
== bfd_link_hash_defined
)
5748 dest
= h
->root
.u
.def
.section
;
5752 Elf_Internal_Sym
*isym
;
5754 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5759 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5763 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5772 if (h
->root
.root
.string
[0] == '.'
5773 && h
->root
.root
.string
[1] != '\0')
5774 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5776 if (h
== tga
|| h
== dottga
)
5778 sec
->has_tls_reloc
= 1;
5780 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5781 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5782 /* We have a new-style __tls_get_addr call with
5786 /* Mark this section as having an old-style call. */
5787 sec
->has_tls_get_addr_call
= 1;
5789 plt_list
= &h
->plt
.plist
;
5792 /* We may need a .plt entry if the function this reloc
5793 refers to is in a shared lib. */
5795 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5799 case R_PPC64_ADDR14
:
5800 case R_PPC64_ADDR14_BRNTAKEN
:
5801 case R_PPC64_ADDR14_BRTAKEN
:
5802 case R_PPC64_ADDR24
:
5805 case R_PPC64_TPREL64
:
5806 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5807 if (bfd_link_dll (info
))
5808 info
->flags
|= DF_STATIC_TLS
;
5811 case R_PPC64_DTPMOD64
:
5812 if (rel
+ 1 < rel_end
5813 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5814 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5815 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5817 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5820 case R_PPC64_DTPREL64
:
5821 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5823 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5824 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5825 /* This is the second reloc of a dtpmod, dtprel pair.
5826 Don't mark with TLS_DTPREL. */
5830 sec
->has_tls_reloc
= 1;
5833 struct ppc_link_hash_entry
*eh
;
5834 eh
= (struct ppc_link_hash_entry
*) h
;
5835 eh
->tls_mask
|= tls_type
;
5838 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5839 rel
->r_addend
, tls_type
))
5842 ppc64_sec
= ppc64_elf_section_data (sec
);
5843 if (ppc64_sec
->sec_type
!= sec_toc
)
5847 /* One extra to simplify get_tls_mask. */
5848 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5849 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5850 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5852 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5853 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5854 if (ppc64_sec
->u
.toc
.add
== NULL
)
5856 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5857 ppc64_sec
->sec_type
= sec_toc
;
5859 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5860 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5861 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5863 /* Mark the second slot of a GD or LD entry.
5864 -1 to indicate GD and -2 to indicate LD. */
5865 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5866 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5867 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5868 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5871 case R_PPC64_TPREL16
:
5872 case R_PPC64_TPREL16_LO
:
5873 case R_PPC64_TPREL16_HI
:
5874 case R_PPC64_TPREL16_HA
:
5875 case R_PPC64_TPREL16_DS
:
5876 case R_PPC64_TPREL16_LO_DS
:
5877 case R_PPC64_TPREL16_HIGH
:
5878 case R_PPC64_TPREL16_HIGHA
:
5879 case R_PPC64_TPREL16_HIGHER
:
5880 case R_PPC64_TPREL16_HIGHERA
:
5881 case R_PPC64_TPREL16_HIGHEST
:
5882 case R_PPC64_TPREL16_HIGHESTA
:
5883 if (bfd_link_dll (info
))
5884 info
->flags
|= DF_STATIC_TLS
;
5887 case R_PPC64_ADDR64
:
5889 && rel
+ 1 < rel_end
5890 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5893 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5897 case R_PPC64_ADDR16
:
5898 case R_PPC64_ADDR16_DS
:
5899 case R_PPC64_ADDR16_HA
:
5900 case R_PPC64_ADDR16_HI
:
5901 case R_PPC64_ADDR16_HIGH
:
5902 case R_PPC64_ADDR16_HIGHA
:
5903 case R_PPC64_ADDR16_HIGHER
:
5904 case R_PPC64_ADDR16_HIGHERA
:
5905 case R_PPC64_ADDR16_HIGHEST
:
5906 case R_PPC64_ADDR16_HIGHESTA
:
5907 case R_PPC64_ADDR16_LO
:
5908 case R_PPC64_ADDR16_LO_DS
:
5909 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5910 && rel
->r_addend
== 0)
5912 /* We may need a .plt entry if this reloc refers to a
5913 function in a shared lib. */
5914 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5916 h
->pointer_equality_needed
= 1;
5923 case R_PPC64_ADDR32
:
5924 case R_PPC64_UADDR16
:
5925 case R_PPC64_UADDR32
:
5926 case R_PPC64_UADDR64
:
5928 if (h
!= NULL
&& !bfd_link_pic (info
))
5929 /* We may need a copy reloc. */
5932 /* Don't propagate .opd relocs. */
5933 if (NO_OPD_RELOCS
&& is_opd
)
5936 /* If we are creating a shared library, and this is a reloc
5937 against a global symbol, or a non PC relative reloc
5938 against a local symbol, then we need to copy the reloc
5939 into the shared library. However, if we are linking with
5940 -Bsymbolic, we do not need to copy a reloc against a
5941 global symbol which is defined in an object we are
5942 including in the link (i.e., DEF_REGULAR is set). At
5943 this point we have not seen all the input files, so it is
5944 possible that DEF_REGULAR is not set now but will be set
5945 later (it is never cleared). In case of a weak definition,
5946 DEF_REGULAR may be cleared later by a strong definition in
5947 a shared library. We account for that possibility below by
5948 storing information in the dyn_relocs field of the hash
5949 table entry. A similar situation occurs when creating
5950 shared libraries and symbol visibility changes render the
5953 If on the other hand, we are creating an executable, we
5954 may need to keep relocations for symbols satisfied by a
5955 dynamic library if we manage to avoid copy relocs for the
5958 if ((bfd_link_pic (info
)
5959 && (must_be_dyn_reloc (info
, r_type
)
5961 && (!SYMBOLIC_BIND (info
, h
)
5962 || h
->root
.type
== bfd_link_hash_defweak
5963 || !h
->def_regular
))))
5964 || (ELIMINATE_COPY_RELOCS
5965 && !bfd_link_pic (info
)
5967 && (h
->root
.type
== bfd_link_hash_defweak
5968 || !h
->def_regular
))
5969 || (!bfd_link_pic (info
)
5972 /* We must copy these reloc types into the output file.
5973 Create a reloc section in dynobj and make room for
5977 sreloc
= _bfd_elf_make_dynamic_reloc_section
5978 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5984 /* If this is a global symbol, we count the number of
5985 relocations we need for this symbol. */
5988 struct elf_dyn_relocs
*p
;
5989 struct elf_dyn_relocs
**head
;
5991 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5993 if (p
== NULL
|| p
->sec
!= sec
)
5995 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6005 if (!must_be_dyn_reloc (info
, r_type
))
6010 /* Track dynamic relocs needed for local syms too.
6011 We really need local syms available to do this
6013 struct ppc_dyn_relocs
*p
;
6014 struct ppc_dyn_relocs
**head
;
6015 bfd_boolean is_ifunc
;
6018 Elf_Internal_Sym
*isym
;
6020 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6025 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6029 vpp
= &elf_section_data (s
)->local_dynrel
;
6030 head
= (struct ppc_dyn_relocs
**) vpp
;
6031 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6033 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6035 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6037 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6043 p
->ifunc
= is_ifunc
;
6059 /* Merge backend specific data from an object file to the output
6060 object file when linking. */
6063 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6065 bfd
*obfd
= info
->output_bfd
;
6066 unsigned long iflags
, oflags
;
6068 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6071 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6074 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6077 iflags
= elf_elfheader (ibfd
)->e_flags
;
6078 oflags
= elf_elfheader (obfd
)->e_flags
;
6080 if (iflags
& ~EF_PPC64_ABI
)
6083 /* xgettext:c-format */
6084 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6085 bfd_set_error (bfd_error_bad_value
);
6088 else if (iflags
!= oflags
&& iflags
!= 0)
6091 /* xgettext:c-format */
6092 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6093 ibfd
, iflags
, oflags
);
6094 bfd_set_error (bfd_error_bad_value
);
6098 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6100 /* Merge Tag_compatibility attributes and any common GNU ones. */
6101 _bfd_elf_merge_object_attributes (ibfd
, info
);
6107 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6109 /* Print normal ELF private data. */
6110 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6112 if (elf_elfheader (abfd
)->e_flags
!= 0)
6116 fprintf (file
, _("private flags = 0x%lx:"),
6117 elf_elfheader (abfd
)->e_flags
);
6119 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6120 fprintf (file
, _(" [abiv%ld]"),
6121 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6128 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6129 of the code entry point, and its section, which must be in the same
6130 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6133 opd_entry_value (asection
*opd_sec
,
6135 asection
**code_sec
,
6137 bfd_boolean in_code_sec
)
6139 bfd
*opd_bfd
= opd_sec
->owner
;
6140 Elf_Internal_Rela
*relocs
;
6141 Elf_Internal_Rela
*lo
, *hi
, *look
;
6144 /* No relocs implies we are linking a --just-symbols object, or looking
6145 at a final linked executable with addr2line or somesuch. */
6146 if (opd_sec
->reloc_count
== 0)
6148 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6150 if (contents
== NULL
)
6152 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6153 return (bfd_vma
) -1;
6154 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6157 /* PR 17512: file: 64b9dfbb. */
6158 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6159 return (bfd_vma
) -1;
6161 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6162 if (code_sec
!= NULL
)
6164 asection
*sec
, *likely
= NULL
;
6170 && val
< sec
->vma
+ sec
->size
)
6176 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6178 && (sec
->flags
& SEC_LOAD
) != 0
6179 && (sec
->flags
& SEC_ALLOC
) != 0)
6184 if (code_off
!= NULL
)
6185 *code_off
= val
- likely
->vma
;
6191 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6193 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6195 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6196 /* PR 17512: file: df8e1fd6. */
6198 return (bfd_vma
) -1;
6200 /* Go find the opd reloc at the sym address. */
6202 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6206 look
= lo
+ (hi
- lo
) / 2;
6207 if (look
->r_offset
< offset
)
6209 else if (look
->r_offset
> offset
)
6213 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6215 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6216 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6218 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6219 asection
*sec
= NULL
;
6221 if (symndx
>= symtab_hdr
->sh_info
6222 && elf_sym_hashes (opd_bfd
) != NULL
)
6224 struct elf_link_hash_entry
**sym_hashes
;
6225 struct elf_link_hash_entry
*rh
;
6227 sym_hashes
= elf_sym_hashes (opd_bfd
);
6228 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6231 rh
= elf_follow_link (rh
);
6232 if (rh
->root
.type
!= bfd_link_hash_defined
6233 && rh
->root
.type
!= bfd_link_hash_defweak
)
6235 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6237 val
= rh
->root
.u
.def
.value
;
6238 sec
= rh
->root
.u
.def
.section
;
6245 Elf_Internal_Sym
*sym
;
6247 if (symndx
< symtab_hdr
->sh_info
)
6249 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6252 size_t symcnt
= symtab_hdr
->sh_info
;
6253 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6258 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6264 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6270 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6273 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6274 val
= sym
->st_value
;
6277 val
+= look
->r_addend
;
6278 if (code_off
!= NULL
)
6280 if (code_sec
!= NULL
)
6282 if (in_code_sec
&& *code_sec
!= sec
)
6287 if (sec
->output_section
!= NULL
)
6288 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6297 /* If the ELF symbol SYM might be a function in SEC, return the
6298 function size and set *CODE_OFF to the function's entry point,
6299 otherwise return zero. */
6301 static bfd_size_type
6302 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6307 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6308 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6312 if (!(sym
->flags
& BSF_SYNTHETIC
))
6313 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6315 if (strcmp (sym
->section
->name
, ".opd") == 0)
6317 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6318 bfd_vma symval
= sym
->value
;
6321 && opd
->adjust
!= NULL
6322 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6324 /* opd_entry_value will use cached relocs that have been
6325 adjusted, but with raw symbols. That means both local
6326 and global symbols need adjusting. */
6327 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6333 if (opd_entry_value (sym
->section
, symval
,
6334 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6336 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6337 symbol. This size has nothing to do with the code size of the
6338 function, which is what we're supposed to return, but the
6339 code size isn't available without looking up the dot-sym.
6340 However, doing that would be a waste of time particularly
6341 since elf_find_function will look at the dot-sym anyway.
6342 Now, elf_find_function will keep the largest size of any
6343 function sym found at the code address of interest, so return
6344 1 here to avoid it incorrectly caching a larger function size
6345 for a small function. This does mean we return the wrong
6346 size for a new-ABI function of size 24, but all that does is
6347 disable caching for such functions. */
6353 if (sym
->section
!= sec
)
6355 *code_off
= sym
->value
;
6362 /* Return true if symbol is a strong function defined in an ELFv2
6363 object with st_other localentry bits of zero, ie. its local entry
6364 point coincides with its global entry point. */
6367 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6370 && h
->type
== STT_FUNC
6371 && h
->root
.type
== bfd_link_hash_defined
6372 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6373 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6374 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6375 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6378 /* Return true if symbol is defined in a regular object file. */
6381 is_static_defined (struct elf_link_hash_entry
*h
)
6383 return ((h
->root
.type
== bfd_link_hash_defined
6384 || h
->root
.type
== bfd_link_hash_defweak
)
6385 && h
->root
.u
.def
.section
!= NULL
6386 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6389 /* If FDH is a function descriptor symbol, return the associated code
6390 entry symbol if it is defined. Return NULL otherwise. */
6392 static struct ppc_link_hash_entry
*
6393 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6395 if (fdh
->is_func_descriptor
)
6397 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6398 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6399 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6405 /* If FH is a function code entry symbol, return the associated
6406 function descriptor symbol if it is defined. Return NULL otherwise. */
6408 static struct ppc_link_hash_entry
*
6409 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6412 && fh
->oh
->is_func_descriptor
)
6414 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6415 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6416 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6422 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6424 /* Garbage collect sections, after first dealing with dot-symbols. */
6427 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6429 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6431 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6433 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6434 htab
->need_func_desc_adj
= 0;
6436 return bfd_elf_gc_sections (abfd
, info
);
6439 /* Mark all our entry sym sections, both opd and code section. */
6442 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6444 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6445 struct bfd_sym_chain
*sym
;
6450 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6452 struct ppc_link_hash_entry
*eh
, *fh
;
6455 eh
= (struct ppc_link_hash_entry
*)
6456 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6459 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6460 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6463 fh
= defined_code_entry (eh
);
6466 sec
= fh
->elf
.root
.u
.def
.section
;
6467 sec
->flags
|= SEC_KEEP
;
6469 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6470 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6471 eh
->elf
.root
.u
.def
.value
,
6472 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6473 sec
->flags
|= SEC_KEEP
;
6475 sec
= eh
->elf
.root
.u
.def
.section
;
6476 sec
->flags
|= SEC_KEEP
;
6480 /* Mark sections containing dynamically referenced symbols. When
6481 building shared libraries, we must assume that any visible symbol is
6485 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6487 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6488 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6489 struct ppc_link_hash_entry
*fdh
;
6490 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6492 /* Dynamic linking info is on the func descriptor sym. */
6493 fdh
= defined_func_desc (eh
);
6497 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6498 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6499 && (eh
->elf
.ref_dynamic
6500 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6501 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6502 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6503 && (!bfd_link_executable (info
)
6504 || info
->gc_keep_exported
6505 || info
->export_dynamic
6508 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6509 && (eh
->elf
.versioned
>= versioned
6510 || !bfd_hide_sym_by_version (info
->version_info
,
6511 eh
->elf
.root
.root
.string
)))))
6514 struct ppc_link_hash_entry
*fh
;
6516 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6518 /* Function descriptor syms cause the associated
6519 function code sym section to be marked. */
6520 fh
= defined_code_entry (eh
);
6523 code_sec
= fh
->elf
.root
.u
.def
.section
;
6524 code_sec
->flags
|= SEC_KEEP
;
6526 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6527 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6528 eh
->elf
.root
.u
.def
.value
,
6529 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6530 code_sec
->flags
|= SEC_KEEP
;
6536 /* Return the section that should be marked against GC for a given
6540 ppc64_elf_gc_mark_hook (asection
*sec
,
6541 struct bfd_link_info
*info
,
6542 Elf_Internal_Rela
*rel
,
6543 struct elf_link_hash_entry
*h
,
6544 Elf_Internal_Sym
*sym
)
6548 /* Syms return NULL if we're marking .opd, so we avoid marking all
6549 function sections, as all functions are referenced in .opd. */
6551 if (get_opd_info (sec
) != NULL
)
6556 enum elf_ppc64_reloc_type r_type
;
6557 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6559 r_type
= ELF64_R_TYPE (rel
->r_info
);
6562 case R_PPC64_GNU_VTINHERIT
:
6563 case R_PPC64_GNU_VTENTRY
:
6567 switch (h
->root
.type
)
6569 case bfd_link_hash_defined
:
6570 case bfd_link_hash_defweak
:
6571 eh
= (struct ppc_link_hash_entry
*) h
;
6572 fdh
= defined_func_desc (eh
);
6575 /* -mcall-aixdesc code references the dot-symbol on
6576 a call reloc. Mark the function descriptor too
6577 against garbage collection. */
6579 if (fdh
->elf
.u
.weakdef
!= NULL
)
6580 fdh
->elf
.u
.weakdef
->mark
= 1;
6584 /* Function descriptor syms cause the associated
6585 function code sym section to be marked. */
6586 fh
= defined_code_entry (eh
);
6589 /* They also mark their opd section. */
6590 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6592 rsec
= fh
->elf
.root
.u
.def
.section
;
6594 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6595 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6596 eh
->elf
.root
.u
.def
.value
,
6597 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6598 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6600 rsec
= h
->root
.u
.def
.section
;
6603 case bfd_link_hash_common
:
6604 rsec
= h
->root
.u
.c
.p
->section
;
6608 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6614 struct _opd_sec_data
*opd
;
6616 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6617 opd
= get_opd_info (rsec
);
6618 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6622 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6629 /* The maximum size of .sfpr. */
6630 #define SFPR_MAX (218*4)
6632 struct sfpr_def_parms
6634 const char name
[12];
6635 unsigned char lo
, hi
;
6636 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6637 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6640 /* Auto-generate _save*, _rest* functions in .sfpr.
6641 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6645 sfpr_define (struct bfd_link_info
*info
,
6646 const struct sfpr_def_parms
*parm
,
6649 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6651 size_t len
= strlen (parm
->name
);
6652 bfd_boolean writing
= FALSE
;
6658 memcpy (sym
, parm
->name
, len
);
6661 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6663 struct ppc_link_hash_entry
*h
;
6665 sym
[len
+ 0] = i
/ 10 + '0';
6666 sym
[len
+ 1] = i
% 10 + '0';
6667 h
= (struct ppc_link_hash_entry
*)
6668 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6669 if (stub_sec
!= NULL
)
6672 && h
->elf
.root
.type
== bfd_link_hash_defined
6673 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6675 struct elf_link_hash_entry
*s
;
6677 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6678 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6681 if (s
->root
.type
== bfd_link_hash_new
6682 || (s
->root
.type
= bfd_link_hash_defined
6683 && s
->root
.u
.def
.section
== stub_sec
))
6685 s
->root
.type
= bfd_link_hash_defined
;
6686 s
->root
.u
.def
.section
= stub_sec
;
6687 s
->root
.u
.def
.value
= (stub_sec
->size
6688 + h
->elf
.root
.u
.def
.value
);
6691 s
->ref_regular_nonweak
= 1;
6692 s
->forced_local
= 1;
6694 s
->root
.linker_def
= 1;
6702 if (!h
->elf
.def_regular
)
6704 h
->elf
.root
.type
= bfd_link_hash_defined
;
6705 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6706 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6707 h
->elf
.type
= STT_FUNC
;
6708 h
->elf
.def_regular
= 1;
6710 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6712 if (htab
->sfpr
->contents
== NULL
)
6714 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6715 if (htab
->sfpr
->contents
== NULL
)
6722 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6724 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6726 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6727 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6735 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6737 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6742 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6744 p
= savegpr0 (abfd
, p
, r
);
6745 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6747 bfd_put_32 (abfd
, BLR
, p
);
6752 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6754 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6759 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6761 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6763 p
= restgpr0 (abfd
, p
, r
);
6764 bfd_put_32 (abfd
, MTLR_R0
, p
);
6768 p
= restgpr0 (abfd
, p
, 30);
6769 p
= restgpr0 (abfd
, p
, 31);
6771 bfd_put_32 (abfd
, BLR
, p
);
6776 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6778 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6783 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6785 p
= savegpr1 (abfd
, p
, r
);
6786 bfd_put_32 (abfd
, BLR
, p
);
6791 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6793 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6798 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6800 p
= restgpr1 (abfd
, p
, r
);
6801 bfd_put_32 (abfd
, BLR
, p
);
6806 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6808 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6813 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6815 p
= savefpr (abfd
, p
, r
);
6816 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6818 bfd_put_32 (abfd
, BLR
, p
);
6823 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6825 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6830 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6832 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6834 p
= restfpr (abfd
, p
, r
);
6835 bfd_put_32 (abfd
, MTLR_R0
, p
);
6839 p
= restfpr (abfd
, p
, 30);
6840 p
= restfpr (abfd
, p
, 31);
6842 bfd_put_32 (abfd
, BLR
, p
);
6847 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6849 p
= savefpr (abfd
, p
, r
);
6850 bfd_put_32 (abfd
, BLR
, p
);
6855 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6857 p
= restfpr (abfd
, p
, r
);
6858 bfd_put_32 (abfd
, BLR
, p
);
6863 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6865 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6867 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6872 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6874 p
= savevr (abfd
, p
, r
);
6875 bfd_put_32 (abfd
, BLR
, p
);
6880 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6882 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6884 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6889 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6891 p
= restvr (abfd
, p
, r
);
6892 bfd_put_32 (abfd
, BLR
, p
);
6896 /* Called via elf_link_hash_traverse to transfer dynamic linking
6897 information on function code symbol entries to their corresponding
6898 function descriptor symbol entries. */
6901 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6903 struct bfd_link_info
*info
;
6904 struct ppc_link_hash_table
*htab
;
6905 struct ppc_link_hash_entry
*fh
;
6906 struct ppc_link_hash_entry
*fdh
;
6907 bfd_boolean force_local
;
6909 fh
= (struct ppc_link_hash_entry
*) h
;
6910 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6916 if (fh
->elf
.root
.root
.string
[0] != '.'
6917 || fh
->elf
.root
.root
.string
[1] == '\0')
6921 htab
= ppc_hash_table (info
);
6925 /* Find the corresponding function descriptor symbol. */
6926 fdh
= lookup_fdh (fh
, htab
);
6928 /* Resolve undefined references to dot-symbols as the value
6929 in the function descriptor, if we have one in a regular object.
6930 This is to satisfy cases like ".quad .foo". Calls to functions
6931 in dynamic objects are handled elsewhere. */
6932 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
6933 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6934 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
6935 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6936 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6937 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6938 fdh
->elf
.root
.u
.def
.value
,
6939 &fh
->elf
.root
.u
.def
.section
,
6940 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6942 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6943 fh
->elf
.forced_local
= 1;
6944 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6945 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6948 if (!fh
->elf
.dynamic
)
6950 struct plt_entry
*ent
;
6952 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6953 if (ent
->plt
.refcount
> 0)
6959 /* Create a descriptor as undefined if necessary. */
6961 && !bfd_link_executable (info
)
6962 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6963 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6965 fdh
= make_fdh (info
, fh
);
6970 /* We can't support overriding of symbols on a fake descriptor. */
6973 && (fh
->elf
.root
.type
== bfd_link_hash_defined
6974 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
6975 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6977 /* Transfer dynamic linking information to the function descriptor. */
6980 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6981 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6982 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6983 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6984 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
6985 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
6986 || fh
->elf
.type
== STT_FUNC
6987 || fh
->elf
.type
== STT_GNU_IFUNC
);
6988 move_plt_plist (fh
, fdh
);
6990 if (!fdh
->elf
.forced_local
6991 && fh
->elf
.dynindx
!= -1)
6992 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6996 /* Now that the info is on the function descriptor, clear the
6997 function code sym info. Any function code syms for which we
6998 don't have a definition in a regular file, we force local.
6999 This prevents a shared library from exporting syms that have
7000 been imported from another library. Function code syms that
7001 are really in the library we must leave global to prevent the
7002 linker dragging in a definition from a static library. */
7003 force_local
= (!fh
->elf
.def_regular
7005 || !fdh
->elf
.def_regular
7006 || fdh
->elf
.forced_local
);
7007 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7012 static const struct sfpr_def_parms save_res_funcs
[] =
7014 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7015 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7016 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7017 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7018 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7019 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7020 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7021 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7022 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7023 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7024 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7025 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7028 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7029 this hook to a) provide some gcc support functions, and b) transfer
7030 dynamic linking information gathered so far on function code symbol
7031 entries, to their corresponding function descriptor symbol entries. */
7034 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7035 struct bfd_link_info
*info
)
7037 struct ppc_link_hash_table
*htab
;
7039 htab
= ppc_hash_table (info
);
7043 /* Provide any missing _save* and _rest* functions. */
7044 if (htab
->sfpr
!= NULL
)
7048 htab
->sfpr
->size
= 0;
7049 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7050 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7052 if (htab
->sfpr
->size
== 0)
7053 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7056 if (bfd_link_relocatable (info
))
7059 if (htab
->elf
.hgot
!= NULL
)
7061 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7062 /* Make .TOC. defined so as to prevent it being made dynamic.
7063 The wrong value here is fixed later in ppc64_elf_set_toc. */
7064 if (!htab
->elf
.hgot
->def_regular
7065 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7067 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7068 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7069 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7070 htab
->elf
.hgot
->def_regular
= 1;
7071 htab
->elf
.hgot
->root
.linker_def
= 1;
7073 htab
->elf
.hgot
->type
= STT_OBJECT
;
7074 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7078 if (htab
->need_func_desc_adj
)
7080 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7081 htab
->need_func_desc_adj
= 0;
7087 /* Find dynamic relocs for H that apply to read-only sections. */
7090 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7092 struct ppc_link_hash_entry
*eh
;
7093 struct elf_dyn_relocs
*p
;
7095 eh
= (struct ppc_link_hash_entry
*) h
;
7096 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7098 asection
*s
= p
->sec
->output_section
;
7100 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7106 /* Return true if we have dynamic relocs against H or any of its weak
7107 aliases, that apply to read-only sections. */
7110 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7112 struct ppc_link_hash_entry
*eh
;
7114 eh
= (struct ppc_link_hash_entry
*) h
;
7117 if (readonly_dynrelocs (&eh
->elf
))
7120 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7125 /* Return whether EH has pc-relative dynamic relocs. */
7128 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7130 struct elf_dyn_relocs
*p
;
7132 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7133 if (p
->pc_count
!= 0)
7138 /* Return true if a global entry stub will be created for H. Valid
7139 for ELFv2 before plt entries have been allocated. */
7142 global_entry_stub (struct elf_link_hash_entry
*h
)
7144 struct plt_entry
*pent
;
7146 if (!h
->pointer_equality_needed
7150 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7151 if (pent
->plt
.refcount
> 0
7152 && pent
->addend
== 0)
7158 /* Adjust a symbol defined by a dynamic object and referenced by a
7159 regular object. The current definition is in some section of the
7160 dynamic object, but we're not including those sections. We have to
7161 change the definition to something the rest of the link can
7165 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7166 struct elf_link_hash_entry
*h
)
7168 struct ppc_link_hash_table
*htab
;
7171 htab
= ppc_hash_table (info
);
7175 /* Deal with function syms. */
7176 if (h
->type
== STT_FUNC
7177 || h
->type
== STT_GNU_IFUNC
7180 bfd_boolean local
= (((struct ppc_link_hash_entry
*) h
)->save_res
7181 || SYMBOL_CALLS_LOCAL (info
, h
)
7182 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
7183 /* Discard dyn_relocs when non-pic if we've decided that a
7184 function symbol is local and not an ifunc. We keep dynamic
7185 relocs for ifuncs when local rather than always emitting a
7186 plt call stub for them and defining the symbol on the call
7187 stub. We can't do that for ELFv1 anyway (a function symbol
7188 is defined on a descriptor, not code) and it can be faster at
7189 run-time due to not needing to bounce through a stub. The
7190 dyn_relocs for ifuncs will be applied even in a static
7192 if (!bfd_link_pic (info
)
7193 && h
->type
!= STT_GNU_IFUNC
7195 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7197 /* Clear procedure linkage table information for any symbol that
7198 won't need a .plt entry. */
7199 struct plt_entry
*ent
;
7200 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7201 if (ent
->plt
.refcount
> 0)
7204 || (h
->type
!= STT_GNU_IFUNC
&& local
))
7206 h
->plt
.plist
= NULL
;
7208 h
->pointer_equality_needed
= 0;
7210 else if (abiversion (info
->output_bfd
) >= 2)
7212 /* Taking a function's address in a read/write section
7213 doesn't require us to define the function symbol in the
7214 executable on a global entry stub. A dynamic reloc can
7215 be used instead. The reason we prefer a few more dynamic
7216 relocs is that calling via a global entry stub costs a
7217 few more instructions, and pointer_equality_needed causes
7218 extra work in ld.so when resolving these symbols. */
7219 if (global_entry_stub (h
))
7221 if (!alias_readonly_dynrelocs (h
))
7223 h
->pointer_equality_needed
= 0;
7224 /* If we haven't seen a branch reloc then we don't need
7227 h
->plt
.plist
= NULL
;
7229 else if (!bfd_link_pic (info
))
7230 /* We are going to be defining the function symbol on the
7231 plt stub, so no dyn_relocs needed when non-pic. */
7232 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7235 /* ELFv2 function symbols can't have copy relocs. */
7238 else if (!h
->needs_plt
7239 && !alias_readonly_dynrelocs (h
))
7241 /* If we haven't seen a branch reloc then we don't need a
7243 h
->plt
.plist
= NULL
;
7244 h
->pointer_equality_needed
= 0;
7249 h
->plt
.plist
= NULL
;
7251 /* If this is a weak symbol, and there is a real definition, the
7252 processor independent code will have arranged for us to see the
7253 real definition first, and we can just use the same value. */
7254 if (h
->u
.weakdef
!= NULL
)
7256 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7257 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7258 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7259 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7260 if (ELIMINATE_COPY_RELOCS
)
7261 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7265 /* If we are creating a shared library, we must presume that the
7266 only references to the symbol are via the global offset table.
7267 For such cases we need not do anything here; the relocations will
7268 be handled correctly by relocate_section. */
7269 if (bfd_link_pic (info
))
7272 /* If there are no references to this symbol that do not use the
7273 GOT, we don't need to generate a copy reloc. */
7274 if (!h
->non_got_ref
)
7277 /* Don't generate a copy reloc for symbols defined in the executable. */
7278 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7280 /* If -z nocopyreloc was given, don't generate them either. */
7281 || info
->nocopyreloc
7283 /* If we didn't find any dynamic relocs in read-only sections, then
7284 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7285 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7287 /* Protected variables do not work with .dynbss. The copy in
7288 .dynbss won't be used by the shared library with the protected
7289 definition for the variable. Text relocations are preferable
7290 to an incorrect program. */
7291 || h
->protected_def
)
7294 if (h
->plt
.plist
!= NULL
)
7296 /* We should never get here, but unfortunately there are versions
7297 of gcc out there that improperly (for this ABI) put initialized
7298 function pointers, vtable refs and suchlike in read-only
7299 sections. Allow them to proceed, but warn that this might
7300 break at runtime. */
7301 info
->callbacks
->einfo
7302 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7303 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7304 h
->root
.root
.string
);
7307 /* This is a reference to a symbol defined by a dynamic object which
7308 is not a function. */
7310 /* We must allocate the symbol in our .dynbss section, which will
7311 become part of the .bss section of the executable. There will be
7312 an entry for this symbol in the .dynsym section. The dynamic
7313 object will contain position independent code, so all references
7314 from the dynamic object to this symbol will go through the global
7315 offset table. The dynamic linker will use the .dynsym entry to
7316 determine the address it must put in the global offset table, so
7317 both the dynamic object and the regular object will refer to the
7318 same memory location for the variable. */
7320 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7321 to copy the initial value out of the dynamic object and into the
7322 runtime process image. We need to remember the offset into the
7323 .rela.bss section we are going to use. */
7324 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7326 s
= htab
->elf
.sdynrelro
;
7327 srel
= htab
->elf
.sreldynrelro
;
7331 s
= htab
->elf
.sdynbss
;
7332 srel
= htab
->elf
.srelbss
;
7334 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7336 srel
->size
+= sizeof (Elf64_External_Rela
);
7340 /* We no longer want dyn_relocs. */
7341 ((struct ppc_link_hash_entry
*) h
)->dyn_relocs
= NULL
;
7342 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7345 /* If given a function descriptor symbol, hide both the function code
7346 sym and the descriptor. */
7348 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7349 struct elf_link_hash_entry
*h
,
7350 bfd_boolean force_local
)
7352 struct ppc_link_hash_entry
*eh
;
7353 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7355 eh
= (struct ppc_link_hash_entry
*) h
;
7356 if (eh
->is_func_descriptor
)
7358 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7363 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7366 /* We aren't supposed to use alloca in BFD because on
7367 systems which do not have alloca the version in libiberty
7368 calls xmalloc, which might cause the program to crash
7369 when it runs out of memory. This function doesn't have a
7370 return status, so there's no way to gracefully return an
7371 error. So cheat. We know that string[-1] can be safely
7372 accessed; It's either a string in an ELF string table,
7373 or allocated in an objalloc structure. */
7375 p
= eh
->elf
.root
.root
.string
- 1;
7378 fh
= (struct ppc_link_hash_entry
*)
7379 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7382 /* Unfortunately, if it so happens that the string we were
7383 looking for was allocated immediately before this string,
7384 then we overwrote the string terminator. That's the only
7385 reason the lookup should fail. */
7388 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7389 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7391 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7392 fh
= (struct ppc_link_hash_entry
*)
7393 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7402 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7407 get_sym_h (struct elf_link_hash_entry
**hp
,
7408 Elf_Internal_Sym
**symp
,
7410 unsigned char **tls_maskp
,
7411 Elf_Internal_Sym
**locsymsp
,
7412 unsigned long r_symndx
,
7415 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7417 if (r_symndx
>= symtab_hdr
->sh_info
)
7419 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7420 struct elf_link_hash_entry
*h
;
7422 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7423 h
= elf_follow_link (h
);
7431 if (symsecp
!= NULL
)
7433 asection
*symsec
= NULL
;
7434 if (h
->root
.type
== bfd_link_hash_defined
7435 || h
->root
.type
== bfd_link_hash_defweak
)
7436 symsec
= h
->root
.u
.def
.section
;
7440 if (tls_maskp
!= NULL
)
7442 struct ppc_link_hash_entry
*eh
;
7444 eh
= (struct ppc_link_hash_entry
*) h
;
7445 *tls_maskp
= &eh
->tls_mask
;
7450 Elf_Internal_Sym
*sym
;
7451 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7453 if (locsyms
== NULL
)
7455 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7456 if (locsyms
== NULL
)
7457 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7458 symtab_hdr
->sh_info
,
7459 0, NULL
, NULL
, NULL
);
7460 if (locsyms
== NULL
)
7462 *locsymsp
= locsyms
;
7464 sym
= locsyms
+ r_symndx
;
7472 if (symsecp
!= NULL
)
7473 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7475 if (tls_maskp
!= NULL
)
7477 struct got_entry
**lgot_ents
;
7478 unsigned char *tls_mask
;
7481 lgot_ents
= elf_local_got_ents (ibfd
);
7482 if (lgot_ents
!= NULL
)
7484 struct plt_entry
**local_plt
= (struct plt_entry
**)
7485 (lgot_ents
+ symtab_hdr
->sh_info
);
7486 unsigned char *lgot_masks
= (unsigned char *)
7487 (local_plt
+ symtab_hdr
->sh_info
);
7488 tls_mask
= &lgot_masks
[r_symndx
];
7490 *tls_maskp
= tls_mask
;
7496 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7497 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7498 type suitable for optimization, and 1 otherwise. */
7501 get_tls_mask (unsigned char **tls_maskp
,
7502 unsigned long *toc_symndx
,
7503 bfd_vma
*toc_addend
,
7504 Elf_Internal_Sym
**locsymsp
,
7505 const Elf_Internal_Rela
*rel
,
7508 unsigned long r_symndx
;
7510 struct elf_link_hash_entry
*h
;
7511 Elf_Internal_Sym
*sym
;
7515 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7516 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7519 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7521 || ppc64_elf_section_data (sec
) == NULL
7522 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7525 /* Look inside a TOC section too. */
7528 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7529 off
= h
->root
.u
.def
.value
;
7532 off
= sym
->st_value
;
7533 off
+= rel
->r_addend
;
7534 BFD_ASSERT (off
% 8 == 0);
7535 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7536 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7537 if (toc_symndx
!= NULL
)
7538 *toc_symndx
= r_symndx
;
7539 if (toc_addend
!= NULL
)
7540 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7541 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7543 if ((h
== NULL
|| is_static_defined (h
))
7544 && (next_r
== -1 || next_r
== -2))
7549 /* Find (or create) an entry in the tocsave hash table. */
7551 static struct tocsave_entry
*
7552 tocsave_find (struct ppc_link_hash_table
*htab
,
7553 enum insert_option insert
,
7554 Elf_Internal_Sym
**local_syms
,
7555 const Elf_Internal_Rela
*irela
,
7558 unsigned long r_indx
;
7559 struct elf_link_hash_entry
*h
;
7560 Elf_Internal_Sym
*sym
;
7561 struct tocsave_entry ent
, *p
;
7563 struct tocsave_entry
**slot
;
7565 r_indx
= ELF64_R_SYM (irela
->r_info
);
7566 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7568 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7571 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7576 ent
.offset
= h
->root
.u
.def
.value
;
7578 ent
.offset
= sym
->st_value
;
7579 ent
.offset
+= irela
->r_addend
;
7581 hash
= tocsave_htab_hash (&ent
);
7582 slot
= ((struct tocsave_entry
**)
7583 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7589 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7598 /* Adjust all global syms defined in opd sections. In gcc generated
7599 code for the old ABI, these will already have been done. */
7602 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7604 struct ppc_link_hash_entry
*eh
;
7606 struct _opd_sec_data
*opd
;
7608 if (h
->root
.type
== bfd_link_hash_indirect
)
7611 if (h
->root
.type
!= bfd_link_hash_defined
7612 && h
->root
.type
!= bfd_link_hash_defweak
)
7615 eh
= (struct ppc_link_hash_entry
*) h
;
7616 if (eh
->adjust_done
)
7619 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7620 opd
= get_opd_info (sym_sec
);
7621 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7623 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7626 /* This entry has been deleted. */
7627 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7630 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7631 if (discarded_section (dsec
))
7633 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7637 eh
->elf
.root
.u
.def
.value
= 0;
7638 eh
->elf
.root
.u
.def
.section
= dsec
;
7641 eh
->elf
.root
.u
.def
.value
+= adjust
;
7642 eh
->adjust_done
= 1;
7647 /* Handles decrementing dynamic reloc counts for the reloc specified by
7648 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7649 have already been determined. */
7652 dec_dynrel_count (bfd_vma r_info
,
7654 struct bfd_link_info
*info
,
7655 Elf_Internal_Sym
**local_syms
,
7656 struct elf_link_hash_entry
*h
,
7657 Elf_Internal_Sym
*sym
)
7659 enum elf_ppc64_reloc_type r_type
;
7660 asection
*sym_sec
= NULL
;
7662 /* Can this reloc be dynamic? This switch, and later tests here
7663 should be kept in sync with the code in check_relocs. */
7664 r_type
= ELF64_R_TYPE (r_info
);
7670 case R_PPC64_TPREL16
:
7671 case R_PPC64_TPREL16_LO
:
7672 case R_PPC64_TPREL16_HI
:
7673 case R_PPC64_TPREL16_HA
:
7674 case R_PPC64_TPREL16_DS
:
7675 case R_PPC64_TPREL16_LO_DS
:
7676 case R_PPC64_TPREL16_HIGH
:
7677 case R_PPC64_TPREL16_HIGHA
:
7678 case R_PPC64_TPREL16_HIGHER
:
7679 case R_PPC64_TPREL16_HIGHERA
:
7680 case R_PPC64_TPREL16_HIGHEST
:
7681 case R_PPC64_TPREL16_HIGHESTA
:
7682 case R_PPC64_TPREL64
:
7683 case R_PPC64_DTPMOD64
:
7684 case R_PPC64_DTPREL64
:
7685 case R_PPC64_ADDR64
:
7689 case R_PPC64_ADDR14
:
7690 case R_PPC64_ADDR14_BRNTAKEN
:
7691 case R_PPC64_ADDR14_BRTAKEN
:
7692 case R_PPC64_ADDR16
:
7693 case R_PPC64_ADDR16_DS
:
7694 case R_PPC64_ADDR16_HA
:
7695 case R_PPC64_ADDR16_HI
:
7696 case R_PPC64_ADDR16_HIGH
:
7697 case R_PPC64_ADDR16_HIGHA
:
7698 case R_PPC64_ADDR16_HIGHER
:
7699 case R_PPC64_ADDR16_HIGHERA
:
7700 case R_PPC64_ADDR16_HIGHEST
:
7701 case R_PPC64_ADDR16_HIGHESTA
:
7702 case R_PPC64_ADDR16_LO
:
7703 case R_PPC64_ADDR16_LO_DS
:
7704 case R_PPC64_ADDR24
:
7705 case R_PPC64_ADDR32
:
7706 case R_PPC64_UADDR16
:
7707 case R_PPC64_UADDR32
:
7708 case R_PPC64_UADDR64
:
7713 if (local_syms
!= NULL
)
7715 unsigned long r_symndx
;
7716 bfd
*ibfd
= sec
->owner
;
7718 r_symndx
= ELF64_R_SYM (r_info
);
7719 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7723 if ((bfd_link_pic (info
)
7724 && (must_be_dyn_reloc (info
, r_type
)
7726 && (!SYMBOLIC_BIND (info
, h
)
7727 || h
->root
.type
== bfd_link_hash_defweak
7728 || !h
->def_regular
))))
7729 || (ELIMINATE_COPY_RELOCS
7730 && !bfd_link_pic (info
)
7732 && (h
->root
.type
== bfd_link_hash_defweak
7733 || !h
->def_regular
)))
7740 struct elf_dyn_relocs
*p
;
7741 struct elf_dyn_relocs
**pp
;
7742 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7744 /* elf_gc_sweep may have already removed all dyn relocs associated
7745 with local syms for a given section. Also, symbol flags are
7746 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7747 report a dynreloc miscount. */
7748 if (*pp
== NULL
&& info
->gc_sections
)
7751 while ((p
= *pp
) != NULL
)
7755 if (!must_be_dyn_reloc (info
, r_type
))
7767 struct ppc_dyn_relocs
*p
;
7768 struct ppc_dyn_relocs
**pp
;
7770 bfd_boolean is_ifunc
;
7772 if (local_syms
== NULL
)
7773 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7774 if (sym_sec
== NULL
)
7777 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7778 pp
= (struct ppc_dyn_relocs
**) vpp
;
7780 if (*pp
== NULL
&& info
->gc_sections
)
7783 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7784 while ((p
= *pp
) != NULL
)
7786 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7797 /* xgettext:c-format */
7798 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7800 bfd_set_error (bfd_error_bad_value
);
7804 /* Remove unused Official Procedure Descriptor entries. Currently we
7805 only remove those associated with functions in discarded link-once
7806 sections, or weakly defined functions that have been overridden. It
7807 would be possible to remove many more entries for statically linked
7811 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7814 bfd_boolean some_edited
= FALSE
;
7815 asection
*need_pad
= NULL
;
7816 struct ppc_link_hash_table
*htab
;
7818 htab
= ppc_hash_table (info
);
7822 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7825 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7826 Elf_Internal_Shdr
*symtab_hdr
;
7827 Elf_Internal_Sym
*local_syms
;
7828 struct _opd_sec_data
*opd
;
7829 bfd_boolean need_edit
, add_aux_fields
, broken
;
7830 bfd_size_type cnt_16b
= 0;
7832 if (!is_ppc64_elf (ibfd
))
7835 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7836 if (sec
== NULL
|| sec
->size
== 0)
7839 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7842 if (sec
->output_section
== bfd_abs_section_ptr
)
7845 /* Look through the section relocs. */
7846 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7850 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7852 /* Read the relocations. */
7853 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7855 if (relstart
== NULL
)
7858 /* First run through the relocs to check they are sane, and to
7859 determine whether we need to edit this opd section. */
7863 relend
= relstart
+ sec
->reloc_count
;
7864 for (rel
= relstart
; rel
< relend
; )
7866 enum elf_ppc64_reloc_type r_type
;
7867 unsigned long r_symndx
;
7869 struct elf_link_hash_entry
*h
;
7870 Elf_Internal_Sym
*sym
;
7873 /* .opd contains an array of 16 or 24 byte entries. We're
7874 only interested in the reloc pointing to a function entry
7876 offset
= rel
->r_offset
;
7877 if (rel
+ 1 == relend
7878 || rel
[1].r_offset
!= offset
+ 8)
7880 /* If someone messes with .opd alignment then after a
7881 "ld -r" we might have padding in the middle of .opd.
7882 Also, there's nothing to prevent someone putting
7883 something silly in .opd with the assembler. No .opd
7884 optimization for them! */
7887 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7892 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7893 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7896 /* xgettext:c-format */
7897 (_("%B: unexpected reloc type %u in .opd section"),
7903 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7904 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7908 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7910 const char *sym_name
;
7912 sym_name
= h
->root
.root
.string
;
7914 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7918 /* xgettext:c-format */
7919 (_("%B: undefined sym `%s' in .opd section"),
7925 /* opd entries are always for functions defined in the
7926 current input bfd. If the symbol isn't defined in the
7927 input bfd, then we won't be using the function in this
7928 bfd; It must be defined in a linkonce section in another
7929 bfd, or is weak. It's also possible that we are
7930 discarding the function due to a linker script /DISCARD/,
7931 which we test for via the output_section. */
7932 if (sym_sec
->owner
!= ibfd
7933 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7937 if (rel
+ 1 == relend
7938 || (rel
+ 2 < relend
7939 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7944 if (sec
->size
== offset
+ 24)
7949 if (sec
->size
== offset
+ 16)
7956 else if (rel
+ 1 < relend
7957 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7958 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7960 if (rel
[0].r_offset
== offset
+ 16)
7962 else if (rel
[0].r_offset
!= offset
+ 24)
7969 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7971 if (!broken
&& (need_edit
|| add_aux_fields
))
7973 Elf_Internal_Rela
*write_rel
;
7974 Elf_Internal_Shdr
*rel_hdr
;
7975 bfd_byte
*rptr
, *wptr
;
7976 bfd_byte
*new_contents
;
7979 new_contents
= NULL
;
7980 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7981 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7982 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7983 if (opd
->adjust
== NULL
)
7986 /* This seems a waste of time as input .opd sections are all
7987 zeros as generated by gcc, but I suppose there's no reason
7988 this will always be so. We might start putting something in
7989 the third word of .opd entries. */
7990 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7993 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7998 if (local_syms
!= NULL
7999 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8001 if (elf_section_data (sec
)->relocs
!= relstart
)
8005 sec
->contents
= loc
;
8006 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8009 elf_section_data (sec
)->relocs
= relstart
;
8011 new_contents
= sec
->contents
;
8014 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8015 if (new_contents
== NULL
)
8019 wptr
= new_contents
;
8020 rptr
= sec
->contents
;
8021 write_rel
= relstart
;
8022 for (rel
= relstart
; rel
< relend
; )
8024 unsigned long r_symndx
;
8026 struct elf_link_hash_entry
*h
;
8027 struct ppc_link_hash_entry
*fdh
= NULL
;
8028 Elf_Internal_Sym
*sym
;
8030 Elf_Internal_Rela
*next_rel
;
8033 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8034 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8039 if (next_rel
+ 1 == relend
8040 || (next_rel
+ 2 < relend
8041 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8044 /* See if the .opd entry is full 24 byte or
8045 16 byte (with fd_aux entry overlapped with next
8048 if (next_rel
== relend
)
8050 if (sec
->size
== rel
->r_offset
+ 16)
8053 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8057 && h
->root
.root
.string
[0] == '.')
8059 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8062 fdh
= ppc_follow_link (fdh
);
8063 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8064 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8069 skip
= (sym_sec
->owner
!= ibfd
8070 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8073 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8075 /* Arrange for the function descriptor sym
8077 fdh
->elf
.root
.u
.def
.value
= 0;
8078 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8080 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8082 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8087 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8091 if (++rel
== next_rel
)
8094 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8095 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8102 /* We'll be keeping this opd entry. */
8107 /* Redefine the function descriptor symbol to
8108 this location in the opd section. It is
8109 necessary to update the value here rather
8110 than using an array of adjustments as we do
8111 for local symbols, because various places
8112 in the generic ELF code use the value
8113 stored in u.def.value. */
8114 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8115 fdh
->adjust_done
= 1;
8118 /* Local syms are a bit tricky. We could
8119 tweak them as they can be cached, but
8120 we'd need to look through the local syms
8121 for the function descriptor sym which we
8122 don't have at the moment. So keep an
8123 array of adjustments. */
8124 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8125 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8128 memcpy (wptr
, rptr
, opd_ent_size
);
8129 wptr
+= opd_ent_size
;
8130 if (add_aux_fields
&& opd_ent_size
== 16)
8132 memset (wptr
, '\0', 8);
8136 /* We need to adjust any reloc offsets to point to the
8138 for ( ; rel
!= next_rel
; ++rel
)
8140 rel
->r_offset
+= adjust
;
8141 if (write_rel
!= rel
)
8142 memcpy (write_rel
, rel
, sizeof (*rel
));
8147 rptr
+= opd_ent_size
;
8150 sec
->size
= wptr
- new_contents
;
8151 sec
->reloc_count
= write_rel
- relstart
;
8154 free (sec
->contents
);
8155 sec
->contents
= new_contents
;
8158 /* Fudge the header size too, as this is used later in
8159 elf_bfd_final_link if we are emitting relocs. */
8160 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8161 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8164 else if (elf_section_data (sec
)->relocs
!= relstart
)
8167 if (local_syms
!= NULL
8168 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8170 if (!info
->keep_memory
)
8173 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8178 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8180 /* If we are doing a final link and the last .opd entry is just 16 byte
8181 long, add a 8 byte padding after it. */
8182 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8186 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8188 BFD_ASSERT (need_pad
->size
> 0);
8190 p
= bfd_malloc (need_pad
->size
+ 8);
8194 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8195 p
, 0, need_pad
->size
))
8198 need_pad
->contents
= p
;
8199 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8203 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8207 need_pad
->contents
= p
;
8210 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8211 need_pad
->size
+= 8;
8217 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8220 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8222 struct ppc_link_hash_table
*htab
;
8224 htab
= ppc_hash_table (info
);
8228 if (abiversion (info
->output_bfd
) == 1)
8231 if (htab
->params
->no_multi_toc
)
8232 htab
->do_multi_toc
= 0;
8233 else if (!htab
->do_multi_toc
)
8234 htab
->params
->no_multi_toc
= 1;
8236 /* Default to --no-plt-localentry, as this option can cause problems
8237 with symbol interposition. For example, glibc libpthread.so and
8238 libc.so duplicate many pthread symbols, with a fallback
8239 implementation in libc.so. In some cases the fallback does more
8240 work than the pthread implementation. __pthread_condattr_destroy
8241 is one such symbol: the libpthread.so implementation is
8242 localentry:0 while the libc.so implementation is localentry:8.
8243 An app that "cleverly" uses dlopen to only load necessary
8244 libraries at runtime may omit loading libpthread.so when not
8245 running multi-threaded, which then results in the libc.so
8246 fallback symbols being used and ld.so complaining. Now there
8247 are workarounds in ld (see non_zero_localentry) to detect the
8248 pthread situation, but that may not be the only case where
8249 --plt-localentry can cause trouble. */
8250 if (htab
->params
->plt_localentry0
< 0)
8251 htab
->params
->plt_localentry0
= 0;
8252 if (htab
->params
->plt_localentry0
8253 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8254 FALSE
, FALSE
, FALSE
) == NULL
)
8255 info
->callbacks
->einfo
8256 (_("%P: warning: --plt-localentry is especially dangerous without "
8257 "ld.so support to detect ABI violations.\n"));
8259 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8260 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8261 FALSE
, FALSE
, TRUE
));
8262 /* Move dynamic linking info to the function descriptor sym. */
8263 if (htab
->tls_get_addr
!= NULL
)
8264 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8265 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8266 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8267 FALSE
, FALSE
, TRUE
));
8268 if (htab
->params
->tls_get_addr_opt
)
8270 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8272 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8273 FALSE
, FALSE
, TRUE
);
8275 func_desc_adjust (opt
, info
);
8276 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8277 FALSE
, FALSE
, TRUE
);
8279 && (opt_fd
->root
.type
== bfd_link_hash_defined
8280 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8282 /* If glibc supports an optimized __tls_get_addr call stub,
8283 signalled by the presence of __tls_get_addr_opt, and we'll
8284 be calling __tls_get_addr via a plt call stub, then
8285 make __tls_get_addr point to __tls_get_addr_opt. */
8286 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8287 if (htab
->elf
.dynamic_sections_created
8289 && (tga_fd
->type
== STT_FUNC
8290 || tga_fd
->needs_plt
)
8291 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8292 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8294 struct plt_entry
*ent
;
8296 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8297 if (ent
->plt
.refcount
> 0)
8301 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8302 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8303 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8305 if (opt_fd
->dynindx
!= -1)
8307 /* Use __tls_get_addr_opt in dynamic relocations. */
8308 opt_fd
->dynindx
= -1;
8309 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8310 opt_fd
->dynstr_index
);
8311 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8314 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8315 tga
= &htab
->tls_get_addr
->elf
;
8316 if (opt
!= NULL
&& tga
!= NULL
)
8318 tga
->root
.type
= bfd_link_hash_indirect
;
8319 tga
->root
.u
.i
.link
= &opt
->root
;
8320 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8322 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8324 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8326 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8327 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8328 if (htab
->tls_get_addr
!= NULL
)
8330 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8331 htab
->tls_get_addr
->is_func
= 1;
8336 else if (htab
->params
->tls_get_addr_opt
< 0)
8337 htab
->params
->tls_get_addr_opt
= 0;
8339 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8342 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8346 branch_reloc_hash_match (const bfd
*ibfd
,
8347 const Elf_Internal_Rela
*rel
,
8348 const struct ppc_link_hash_entry
*hash1
,
8349 const struct ppc_link_hash_entry
*hash2
)
8351 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8352 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8353 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8355 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8357 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8358 struct elf_link_hash_entry
*h
;
8360 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8361 h
= elf_follow_link (h
);
8362 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8368 /* Run through all the TLS relocs looking for optimization
8369 opportunities. The linker has been hacked (see ppc64elf.em) to do
8370 a preliminary section layout so that we know the TLS segment
8371 offsets. We can't optimize earlier because some optimizations need
8372 to know the tp offset, and we need to optimize before allocating
8373 dynamic relocations. */
8376 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8380 struct ppc_link_hash_table
*htab
;
8381 unsigned char *toc_ref
;
8384 if (!bfd_link_executable (info
))
8387 htab
= ppc_hash_table (info
);
8391 /* Make two passes over the relocs. On the first pass, mark toc
8392 entries involved with tls relocs, and check that tls relocs
8393 involved in setting up a tls_get_addr call are indeed followed by
8394 such a call. If they are not, we can't do any tls optimization.
8395 On the second pass twiddle tls_mask flags to notify
8396 relocate_section that optimization can be done, and adjust got
8397 and plt refcounts. */
8399 for (pass
= 0; pass
< 2; ++pass
)
8400 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8402 Elf_Internal_Sym
*locsyms
= NULL
;
8403 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8405 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8406 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8408 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8409 bfd_boolean found_tls_get_addr_arg
= 0;
8411 /* Read the relocations. */
8412 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8414 if (relstart
== NULL
)
8420 relend
= relstart
+ sec
->reloc_count
;
8421 for (rel
= relstart
; rel
< relend
; rel
++)
8423 enum elf_ppc64_reloc_type r_type
;
8424 unsigned long r_symndx
;
8425 struct elf_link_hash_entry
*h
;
8426 Elf_Internal_Sym
*sym
;
8428 unsigned char *tls_mask
;
8429 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8431 bfd_boolean ok_tprel
, is_local
;
8432 long toc_ref_index
= 0;
8433 int expecting_tls_get_addr
= 0;
8434 bfd_boolean ret
= FALSE
;
8436 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8437 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8441 if (elf_section_data (sec
)->relocs
!= relstart
)
8443 if (toc_ref
!= NULL
)
8446 && (elf_symtab_hdr (ibfd
).contents
8447 != (unsigned char *) locsyms
))
8454 if (h
->root
.type
== bfd_link_hash_defined
8455 || h
->root
.type
== bfd_link_hash_defweak
)
8456 value
= h
->root
.u
.def
.value
;
8457 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8461 found_tls_get_addr_arg
= 0;
8466 /* Symbols referenced by TLS relocs must be of type
8467 STT_TLS. So no need for .opd local sym adjust. */
8468 value
= sym
->st_value
;
8477 && h
->root
.type
== bfd_link_hash_undefweak
)
8479 else if (sym_sec
!= NULL
8480 && sym_sec
->output_section
!= NULL
)
8482 value
+= sym_sec
->output_offset
;
8483 value
+= sym_sec
->output_section
->vma
;
8484 value
-= htab
->elf
.tls_sec
->vma
;
8485 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8486 < (bfd_vma
) 1 << 32);
8490 r_type
= ELF64_R_TYPE (rel
->r_info
);
8491 /* If this section has old-style __tls_get_addr calls
8492 without marker relocs, then check that each
8493 __tls_get_addr call reloc is preceded by a reloc
8494 that conceivably belongs to the __tls_get_addr arg
8495 setup insn. If we don't find matching arg setup
8496 relocs, don't do any tls optimization. */
8498 && sec
->has_tls_get_addr_call
8500 && (h
== &htab
->tls_get_addr
->elf
8501 || h
== &htab
->tls_get_addr_fd
->elf
)
8502 && !found_tls_get_addr_arg
8503 && is_branch_reloc (r_type
))
8505 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8506 "TLS optimization disabled\n"),
8507 ibfd
, sec
, rel
->r_offset
);
8512 found_tls_get_addr_arg
= 0;
8515 case R_PPC64_GOT_TLSLD16
:
8516 case R_PPC64_GOT_TLSLD16_LO
:
8517 expecting_tls_get_addr
= 1;
8518 found_tls_get_addr_arg
= 1;
8521 case R_PPC64_GOT_TLSLD16_HI
:
8522 case R_PPC64_GOT_TLSLD16_HA
:
8523 /* These relocs should never be against a symbol
8524 defined in a shared lib. Leave them alone if
8525 that turns out to be the case. */
8532 tls_type
= TLS_TLS
| TLS_LD
;
8535 case R_PPC64_GOT_TLSGD16
:
8536 case R_PPC64_GOT_TLSGD16_LO
:
8537 expecting_tls_get_addr
= 1;
8538 found_tls_get_addr_arg
= 1;
8541 case R_PPC64_GOT_TLSGD16_HI
:
8542 case R_PPC64_GOT_TLSGD16_HA
:
8548 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8550 tls_type
= TLS_TLS
| TLS_GD
;
8553 case R_PPC64_GOT_TPREL16_DS
:
8554 case R_PPC64_GOT_TPREL16_LO_DS
:
8555 case R_PPC64_GOT_TPREL16_HI
:
8556 case R_PPC64_GOT_TPREL16_HA
:
8561 tls_clear
= TLS_TPREL
;
8562 tls_type
= TLS_TLS
| TLS_TPREL
;
8569 found_tls_get_addr_arg
= 1;
8574 case R_PPC64_TOC16_LO
:
8575 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8578 /* Mark this toc entry as referenced by a TLS
8579 code sequence. We can do that now in the
8580 case of R_PPC64_TLS, and after checking for
8581 tls_get_addr for the TOC16 relocs. */
8582 if (toc_ref
== NULL
)
8583 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8584 if (toc_ref
== NULL
)
8588 value
= h
->root
.u
.def
.value
;
8590 value
= sym
->st_value
;
8591 value
+= rel
->r_addend
;
8594 BFD_ASSERT (value
< toc
->size
8595 && toc
->output_offset
% 8 == 0);
8596 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8597 if (r_type
== R_PPC64_TLS
8598 || r_type
== R_PPC64_TLSGD
8599 || r_type
== R_PPC64_TLSLD
)
8601 toc_ref
[toc_ref_index
] = 1;
8605 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8610 expecting_tls_get_addr
= 2;
8613 case R_PPC64_TPREL64
:
8617 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8622 tls_set
= TLS_EXPLICIT
;
8623 tls_clear
= TLS_TPREL
;
8628 case R_PPC64_DTPMOD64
:
8632 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8634 if (rel
+ 1 < relend
8636 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8637 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8641 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8644 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8653 tls_set
= TLS_EXPLICIT
;
8664 if (!expecting_tls_get_addr
8665 || !sec
->has_tls_get_addr_call
)
8668 if (rel
+ 1 < relend
8669 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8671 htab
->tls_get_addr_fd
))
8673 if (expecting_tls_get_addr
== 2)
8675 /* Check for toc tls entries. */
8676 unsigned char *toc_tls
;
8679 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8684 if (toc_tls
!= NULL
)
8686 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8687 found_tls_get_addr_arg
= 1;
8689 toc_ref
[toc_ref_index
] = 1;
8695 if (expecting_tls_get_addr
!= 1)
8698 /* Uh oh, we didn't find the expected call. We
8699 could just mark this symbol to exclude it
8700 from tls optimization but it's safer to skip
8701 the entire optimization. */
8702 /* xgettext:c-format */
8703 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8704 "TLS optimization disabled\n"),
8705 ibfd
, sec
, rel
->r_offset
);
8710 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8712 struct plt_entry
*ent
;
8713 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8716 if (ent
->addend
== 0)
8718 if (ent
->plt
.refcount
> 0)
8720 ent
->plt
.refcount
-= 1;
8721 expecting_tls_get_addr
= 0;
8727 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8729 struct plt_entry
*ent
;
8730 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8733 if (ent
->addend
== 0)
8735 if (ent
->plt
.refcount
> 0)
8736 ent
->plt
.refcount
-= 1;
8744 if ((tls_set
& TLS_EXPLICIT
) == 0)
8746 struct got_entry
*ent
;
8748 /* Adjust got entry for this reloc. */
8752 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8754 for (; ent
!= NULL
; ent
= ent
->next
)
8755 if (ent
->addend
== rel
->r_addend
8756 && ent
->owner
== ibfd
8757 && ent
->tls_type
== tls_type
)
8764 /* We managed to get rid of a got entry. */
8765 if (ent
->got
.refcount
> 0)
8766 ent
->got
.refcount
-= 1;
8771 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8772 we'll lose one or two dyn relocs. */
8773 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8777 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8779 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8785 *tls_mask
|= tls_set
;
8786 *tls_mask
&= ~tls_clear
;
8789 if (elf_section_data (sec
)->relocs
!= relstart
)
8794 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8796 if (!info
->keep_memory
)
8799 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8803 if (toc_ref
!= NULL
)
8805 htab
->do_tls_opt
= 1;
8809 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8810 the values of any global symbols in a toc section that has been
8811 edited. Globals in toc sections should be a rarity, so this function
8812 sets a flag if any are found in toc sections other than the one just
8813 edited, so that further hash table traversals can be avoided. */
8815 struct adjust_toc_info
8818 unsigned long *skip
;
8819 bfd_boolean global_toc_syms
;
8822 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8825 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8827 struct ppc_link_hash_entry
*eh
;
8828 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8831 if (h
->root
.type
!= bfd_link_hash_defined
8832 && h
->root
.type
!= bfd_link_hash_defweak
)
8835 eh
= (struct ppc_link_hash_entry
*) h
;
8836 if (eh
->adjust_done
)
8839 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8841 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8842 i
= toc_inf
->toc
->rawsize
>> 3;
8844 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8846 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8849 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8852 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8853 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8856 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8857 eh
->adjust_done
= 1;
8859 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8860 toc_inf
->global_toc_syms
= TRUE
;
8865 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8866 on a _LO variety toc/got reloc. */
8869 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8871 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8872 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8873 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8874 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8875 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8876 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8877 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8878 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8879 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8880 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8881 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8882 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8883 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8884 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8885 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8886 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8887 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8888 /* Exclude lfqu by testing reloc. If relocs are ever
8889 defined for the reduced D field in psq_lu then those
8890 will need testing too. */
8891 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8892 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8894 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8895 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8896 /* Exclude stfqu. psq_stu as above for psq_lu. */
8897 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8898 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8899 && (insn
& 1) == 0));
8902 /* Examine all relocs referencing .toc sections in order to remove
8903 unused .toc entries. */
8906 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8909 struct adjust_toc_info toc_inf
;
8910 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8912 htab
->do_toc_opt
= 1;
8913 toc_inf
.global_toc_syms
= TRUE
;
8914 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8916 asection
*toc
, *sec
;
8917 Elf_Internal_Shdr
*symtab_hdr
;
8918 Elf_Internal_Sym
*local_syms
;
8919 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8920 unsigned long *skip
, *drop
;
8921 unsigned char *used
;
8922 unsigned char *keep
, last
, some_unused
;
8924 if (!is_ppc64_elf (ibfd
))
8927 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8930 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8931 || discarded_section (toc
))
8936 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8938 /* Look at sections dropped from the final link. */
8941 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8943 if (sec
->reloc_count
== 0
8944 || !discarded_section (sec
)
8945 || get_opd_info (sec
)
8946 || (sec
->flags
& SEC_ALLOC
) == 0
8947 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8950 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8951 if (relstart
== NULL
)
8954 /* Run through the relocs to see which toc entries might be
8956 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8958 enum elf_ppc64_reloc_type r_type
;
8959 unsigned long r_symndx
;
8961 struct elf_link_hash_entry
*h
;
8962 Elf_Internal_Sym
*sym
;
8965 r_type
= ELF64_R_TYPE (rel
->r_info
);
8972 case R_PPC64_TOC16_LO
:
8973 case R_PPC64_TOC16_HI
:
8974 case R_PPC64_TOC16_HA
:
8975 case R_PPC64_TOC16_DS
:
8976 case R_PPC64_TOC16_LO_DS
:
8980 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8981 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8989 val
= h
->root
.u
.def
.value
;
8991 val
= sym
->st_value
;
8992 val
+= rel
->r_addend
;
8994 if (val
>= toc
->size
)
8997 /* Anything in the toc ought to be aligned to 8 bytes.
8998 If not, don't mark as unused. */
9004 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9009 skip
[val
>> 3] = ref_from_discarded
;
9012 if (elf_section_data (sec
)->relocs
!= relstart
)
9016 /* For largetoc loads of address constants, we can convert
9017 . addis rx,2,addr@got@ha
9018 . ld ry,addr@got@l(rx)
9020 . addis rx,2,addr@toc@ha
9021 . addi ry,rx,addr@toc@l
9022 when addr is within 2G of the toc pointer. This then means
9023 that the word storing "addr" in the toc is no longer needed. */
9025 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9026 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9027 && toc
->reloc_count
!= 0)
9029 /* Read toc relocs. */
9030 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9032 if (toc_relocs
== NULL
)
9035 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9037 enum elf_ppc64_reloc_type r_type
;
9038 unsigned long r_symndx
;
9040 struct elf_link_hash_entry
*h
;
9041 Elf_Internal_Sym
*sym
;
9044 r_type
= ELF64_R_TYPE (rel
->r_info
);
9045 if (r_type
!= R_PPC64_ADDR64
)
9048 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9049 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9054 || sym_sec
->output_section
== NULL
9055 || discarded_section (sym_sec
))
9058 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9063 if (h
->type
== STT_GNU_IFUNC
)
9065 val
= h
->root
.u
.def
.value
;
9069 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9071 val
= sym
->st_value
;
9073 val
+= rel
->r_addend
;
9074 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9076 /* We don't yet know the exact toc pointer value, but we
9077 know it will be somewhere in the toc section. Don't
9078 optimize if the difference from any possible toc
9079 pointer is outside [ff..f80008000, 7fff7fff]. */
9080 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9081 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9084 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9085 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9090 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9095 skip
[rel
->r_offset
>> 3]
9096 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9103 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9107 if (local_syms
!= NULL
9108 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9112 && elf_section_data (sec
)->relocs
!= relstart
)
9114 if (toc_relocs
!= NULL
9115 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9122 /* Now check all kept sections that might reference the toc.
9123 Check the toc itself last. */
9124 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9127 sec
= (sec
== toc
? NULL
9128 : sec
->next
== NULL
? toc
9129 : sec
->next
== toc
&& toc
->next
? toc
->next
9134 if (sec
->reloc_count
== 0
9135 || discarded_section (sec
)
9136 || get_opd_info (sec
)
9137 || (sec
->flags
& SEC_ALLOC
) == 0
9138 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9141 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9143 if (relstart
== NULL
)
9149 /* Mark toc entries referenced as used. */
9153 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9155 enum elf_ppc64_reloc_type r_type
;
9156 unsigned long r_symndx
;
9158 struct elf_link_hash_entry
*h
;
9159 Elf_Internal_Sym
*sym
;
9161 enum {no_check
, check_lo
, check_ha
} insn_check
;
9163 r_type
= ELF64_R_TYPE (rel
->r_info
);
9167 insn_check
= no_check
;
9170 case R_PPC64_GOT_TLSLD16_HA
:
9171 case R_PPC64_GOT_TLSGD16_HA
:
9172 case R_PPC64_GOT_TPREL16_HA
:
9173 case R_PPC64_GOT_DTPREL16_HA
:
9174 case R_PPC64_GOT16_HA
:
9175 case R_PPC64_TOC16_HA
:
9176 insn_check
= check_ha
;
9179 case R_PPC64_GOT_TLSLD16_LO
:
9180 case R_PPC64_GOT_TLSGD16_LO
:
9181 case R_PPC64_GOT_TPREL16_LO_DS
:
9182 case R_PPC64_GOT_DTPREL16_LO_DS
:
9183 case R_PPC64_GOT16_LO
:
9184 case R_PPC64_GOT16_LO_DS
:
9185 case R_PPC64_TOC16_LO
:
9186 case R_PPC64_TOC16_LO_DS
:
9187 insn_check
= check_lo
;
9191 if (insn_check
!= no_check
)
9193 bfd_vma off
= rel
->r_offset
& ~3;
9194 unsigned char buf
[4];
9197 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9202 insn
= bfd_get_32 (ibfd
, buf
);
9203 if (insn_check
== check_lo
9204 ? !ok_lo_toc_insn (insn
, r_type
)
9205 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9206 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9210 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9211 sprintf (str
, "%#08x", insn
);
9212 info
->callbacks
->einfo
9213 /* xgettext:c-format */
9214 (_("%H: toc optimization is not supported for"
9215 " %s instruction.\n"),
9216 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9223 case R_PPC64_TOC16_LO
:
9224 case R_PPC64_TOC16_HI
:
9225 case R_PPC64_TOC16_HA
:
9226 case R_PPC64_TOC16_DS
:
9227 case R_PPC64_TOC16_LO_DS
:
9228 /* In case we're taking addresses of toc entries. */
9229 case R_PPC64_ADDR64
:
9236 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9237 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9248 val
= h
->root
.u
.def
.value
;
9250 val
= sym
->st_value
;
9251 val
+= rel
->r_addend
;
9253 if (val
>= toc
->size
)
9256 if ((skip
[val
>> 3] & can_optimize
) != 0)
9263 case R_PPC64_TOC16_HA
:
9266 case R_PPC64_TOC16_LO_DS
:
9267 off
= rel
->r_offset
;
9268 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9269 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9275 if ((opc
& (0x3f << 2)) == (58u << 2))
9280 /* Wrong sort of reloc, or not a ld. We may
9281 as well clear ref_from_discarded too. */
9288 /* For the toc section, we only mark as used if this
9289 entry itself isn't unused. */
9290 else if ((used
[rel
->r_offset
>> 3]
9291 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9294 /* Do all the relocs again, to catch reference
9303 if (elf_section_data (sec
)->relocs
!= relstart
)
9307 /* Merge the used and skip arrays. Assume that TOC
9308 doublewords not appearing as either used or unused belong
9309 to an entry more than one doubleword in size. */
9310 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9311 drop
< skip
+ (toc
->size
+ 7) / 8;
9316 *drop
&= ~ref_from_discarded
;
9317 if ((*drop
& can_optimize
) != 0)
9321 else if ((*drop
& ref_from_discarded
) != 0)
9324 last
= ref_from_discarded
;
9334 bfd_byte
*contents
, *src
;
9336 Elf_Internal_Sym
*sym
;
9337 bfd_boolean local_toc_syms
= FALSE
;
9339 /* Shuffle the toc contents, and at the same time convert the
9340 skip array from booleans into offsets. */
9341 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9344 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9346 for (src
= contents
, off
= 0, drop
= skip
;
9347 src
< contents
+ toc
->size
;
9350 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9355 memcpy (src
- off
, src
, 8);
9359 toc
->rawsize
= toc
->size
;
9360 toc
->size
= src
- contents
- off
;
9362 /* Adjust addends for relocs against the toc section sym,
9363 and optimize any accesses we can. */
9364 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9366 if (sec
->reloc_count
== 0
9367 || discarded_section (sec
))
9370 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9372 if (relstart
== NULL
)
9375 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9377 enum elf_ppc64_reloc_type r_type
;
9378 unsigned long r_symndx
;
9380 struct elf_link_hash_entry
*h
;
9383 r_type
= ELF64_R_TYPE (rel
->r_info
);
9390 case R_PPC64_TOC16_LO
:
9391 case R_PPC64_TOC16_HI
:
9392 case R_PPC64_TOC16_HA
:
9393 case R_PPC64_TOC16_DS
:
9394 case R_PPC64_TOC16_LO_DS
:
9395 case R_PPC64_ADDR64
:
9399 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9400 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9408 val
= h
->root
.u
.def
.value
;
9411 val
= sym
->st_value
;
9413 local_toc_syms
= TRUE
;
9416 val
+= rel
->r_addend
;
9418 if (val
> toc
->rawsize
)
9420 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9422 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9424 Elf_Internal_Rela
*tocrel
9425 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9426 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9430 case R_PPC64_TOC16_HA
:
9431 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9434 case R_PPC64_TOC16_LO_DS
:
9435 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9439 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9441 info
->callbacks
->einfo
9442 /* xgettext:c-format */
9443 (_("%H: %s references "
9444 "optimized away TOC entry\n"),
9445 ibfd
, sec
, rel
->r_offset
,
9446 ppc64_elf_howto_table
[r_type
]->name
);
9447 bfd_set_error (bfd_error_bad_value
);
9450 rel
->r_addend
= tocrel
->r_addend
;
9451 elf_section_data (sec
)->relocs
= relstart
;
9455 if (h
!= NULL
|| sym
->st_value
!= 0)
9458 rel
->r_addend
-= skip
[val
>> 3];
9459 elf_section_data (sec
)->relocs
= relstart
;
9462 if (elf_section_data (sec
)->relocs
!= relstart
)
9466 /* We shouldn't have local or global symbols defined in the TOC,
9467 but handle them anyway. */
9468 if (local_syms
!= NULL
)
9469 for (sym
= local_syms
;
9470 sym
< local_syms
+ symtab_hdr
->sh_info
;
9472 if (sym
->st_value
!= 0
9473 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9477 if (sym
->st_value
> toc
->rawsize
)
9478 i
= toc
->rawsize
>> 3;
9480 i
= sym
->st_value
>> 3;
9482 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9486 (_("%s defined on removed toc entry"),
9487 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9490 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9491 sym
->st_value
= (bfd_vma
) i
<< 3;
9494 sym
->st_value
-= skip
[i
];
9495 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9498 /* Adjust any global syms defined in this toc input section. */
9499 if (toc_inf
.global_toc_syms
)
9502 toc_inf
.skip
= skip
;
9503 toc_inf
.global_toc_syms
= FALSE
;
9504 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9508 if (toc
->reloc_count
!= 0)
9510 Elf_Internal_Shdr
*rel_hdr
;
9511 Elf_Internal_Rela
*wrel
;
9514 /* Remove unused toc relocs, and adjust those we keep. */
9515 if (toc_relocs
== NULL
)
9516 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9518 if (toc_relocs
== NULL
)
9522 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9523 if ((skip
[rel
->r_offset
>> 3]
9524 & (ref_from_discarded
| can_optimize
)) == 0)
9526 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9527 wrel
->r_info
= rel
->r_info
;
9528 wrel
->r_addend
= rel
->r_addend
;
9531 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9532 &local_syms
, NULL
, NULL
))
9535 elf_section_data (toc
)->relocs
= toc_relocs
;
9536 toc
->reloc_count
= wrel
- toc_relocs
;
9537 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9538 sz
= rel_hdr
->sh_entsize
;
9539 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9542 else if (toc_relocs
!= NULL
9543 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9546 if (local_syms
!= NULL
9547 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9549 if (!info
->keep_memory
)
9552 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9560 /* Return true iff input section I references the TOC using
9561 instructions limited to +/-32k offsets. */
9564 ppc64_elf_has_small_toc_reloc (asection
*i
)
9566 return (is_ppc64_elf (i
->owner
)
9567 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9570 /* Allocate space for one GOT entry. */
9573 allocate_got (struct elf_link_hash_entry
*h
,
9574 struct bfd_link_info
*info
,
9575 struct got_entry
*gent
)
9577 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9578 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9579 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9581 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9582 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9583 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9585 gent
->got
.offset
= got
->size
;
9586 got
->size
+= entsize
;
9588 if (h
->type
== STT_GNU_IFUNC
)
9590 htab
->elf
.irelplt
->size
+= rentsize
;
9591 htab
->got_reli_size
+= rentsize
;
9593 else if (((bfd_link_pic (info
)
9594 && !((gent
->tls_type
& TLS_TPREL
) != 0
9595 && bfd_link_executable (info
)
9596 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
9597 || (htab
->elf
.dynamic_sections_created
9599 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9600 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9602 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9603 relgot
->size
+= rentsize
;
9607 /* This function merges got entries in the same toc group. */
9610 merge_got_entries (struct got_entry
**pent
)
9612 struct got_entry
*ent
, *ent2
;
9614 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9615 if (!ent
->is_indirect
)
9616 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9617 if (!ent2
->is_indirect
9618 && ent2
->addend
== ent
->addend
9619 && ent2
->tls_type
== ent
->tls_type
9620 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9622 ent2
->is_indirect
= TRUE
;
9623 ent2
->got
.ent
= ent
;
9627 /* If H is undefined, make it dynamic if that makes sense. */
9630 ensure_undef_dynamic (struct bfd_link_info
*info
,
9631 struct elf_link_hash_entry
*h
)
9633 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9635 if (htab
->dynamic_sections_created
9636 && ((info
->dynamic_undefined_weak
!= 0
9637 && h
->root
.type
== bfd_link_hash_undefweak
)
9638 || h
->root
.type
== bfd_link_hash_undefined
)
9641 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9642 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9646 /* Allocate space in .plt, .got and associated reloc sections for
9650 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9652 struct bfd_link_info
*info
;
9653 struct ppc_link_hash_table
*htab
;
9655 struct ppc_link_hash_entry
*eh
;
9656 struct got_entry
**pgent
, *gent
;
9658 if (h
->root
.type
== bfd_link_hash_indirect
)
9661 info
= (struct bfd_link_info
*) inf
;
9662 htab
= ppc_hash_table (info
);
9666 eh
= (struct ppc_link_hash_entry
*) h
;
9667 /* Run through the TLS GD got entries first if we're changing them
9669 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9670 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9671 if (gent
->got
.refcount
> 0
9672 && (gent
->tls_type
& TLS_GD
) != 0)
9674 /* This was a GD entry that has been converted to TPREL. If
9675 there happens to be a TPREL entry we can use that one. */
9676 struct got_entry
*ent
;
9677 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9678 if (ent
->got
.refcount
> 0
9679 && (ent
->tls_type
& TLS_TPREL
) != 0
9680 && ent
->addend
== gent
->addend
9681 && ent
->owner
== gent
->owner
)
9683 gent
->got
.refcount
= 0;
9687 /* If not, then we'll be using our own TPREL entry. */
9688 if (gent
->got
.refcount
!= 0)
9689 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9692 /* Remove any list entry that won't generate a word in the GOT before
9693 we call merge_got_entries. Otherwise we risk merging to empty
9695 pgent
= &h
->got
.glist
;
9696 while ((gent
= *pgent
) != NULL
)
9697 if (gent
->got
.refcount
> 0)
9699 if ((gent
->tls_type
& TLS_LD
) != 0
9702 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9703 *pgent
= gent
->next
;
9706 pgent
= &gent
->next
;
9709 *pgent
= gent
->next
;
9711 if (!htab
->do_multi_toc
)
9712 merge_got_entries (&h
->got
.glist
);
9714 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9715 if (!gent
->is_indirect
)
9717 /* Make sure this symbol is output as a dynamic symbol. */
9718 if (!ensure_undef_dynamic (info
, h
))
9721 if (!is_ppc64_elf (gent
->owner
))
9724 allocate_got (h
, info
, gent
);
9727 /* If no dynamic sections we can't have dynamic relocs, except for
9728 IFUNCs which are handled even in static executables. */
9729 if (!htab
->elf
.dynamic_sections_created
9730 && h
->type
!= STT_GNU_IFUNC
)
9731 eh
->dyn_relocs
= NULL
;
9733 /* Discard relocs on undefined symbols that must be local. */
9734 else if (h
->root
.type
== bfd_link_hash_undefined
9735 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9736 eh
->dyn_relocs
= NULL
;
9738 /* Also discard relocs on undefined weak syms with non-default
9739 visibility, or when dynamic_undefined_weak says so. */
9740 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9741 eh
->dyn_relocs
= NULL
;
9743 if (eh
->dyn_relocs
!= NULL
)
9745 struct elf_dyn_relocs
*p
, **pp
;
9747 /* In the shared -Bsymbolic case, discard space allocated for
9748 dynamic pc-relative relocs against symbols which turn out to
9749 be defined in regular objects. For the normal shared case,
9750 discard space for relocs that have become local due to symbol
9751 visibility changes. */
9753 if (bfd_link_pic (info
))
9755 /* Relocs that use pc_count are those that appear on a call
9756 insn, or certain REL relocs (see must_be_dyn_reloc) that
9757 can be generated via assembly. We want calls to
9758 protected symbols to resolve directly to the function
9759 rather than going via the plt. If people want function
9760 pointer comparisons to work as expected then they should
9761 avoid writing weird assembly. */
9762 if (SYMBOL_CALLS_LOCAL (info
, h
))
9764 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9766 p
->count
-= p
->pc_count
;
9775 if (eh
->dyn_relocs
!= NULL
)
9777 /* Make sure this symbol is output as a dynamic symbol. */
9778 if (!ensure_undef_dynamic (info
, h
))
9782 else if (ELIMINATE_COPY_RELOCS
&& h
->type
!= STT_GNU_IFUNC
)
9784 /* For the non-pic case, discard space for relocs against
9785 symbols which turn out to need copy relocs or are not
9787 if (h
->dynamic_adjusted
9789 && !ELF_COMMON_DEF_P (h
))
9791 /* Make sure this symbol is output as a dynamic symbol. */
9792 if (!ensure_undef_dynamic (info
, h
))
9795 if (h
->dynindx
== -1)
9796 eh
->dyn_relocs
= NULL
;
9799 eh
->dyn_relocs
= NULL
;
9802 /* Finally, allocate space. */
9803 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9805 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9806 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9807 sreloc
= htab
->elf
.irelplt
;
9808 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9812 if ((htab
->elf
.dynamic_sections_created
9813 && h
->dynindx
!= -1)
9814 || h
->type
== STT_GNU_IFUNC
)
9816 struct plt_entry
*pent
;
9817 bfd_boolean doneone
= FALSE
;
9818 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9819 if (pent
->plt
.refcount
> 0)
9821 if (!htab
->elf
.dynamic_sections_created
9822 || h
->dynindx
== -1)
9825 pent
->plt
.offset
= s
->size
;
9826 s
->size
+= PLT_ENTRY_SIZE (htab
);
9827 s
= htab
->elf
.irelplt
;
9831 /* If this is the first .plt entry, make room for the special
9835 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9837 pent
->plt
.offset
= s
->size
;
9839 /* Make room for this entry. */
9840 s
->size
+= PLT_ENTRY_SIZE (htab
);
9842 /* Make room for the .glink code. */
9845 s
->size
+= GLINK_CALL_STUB_SIZE
;
9848 /* We need bigger stubs past index 32767. */
9849 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9856 /* We also need to make an entry in the .rela.plt section. */
9857 s
= htab
->elf
.srelplt
;
9859 s
->size
+= sizeof (Elf64_External_Rela
);
9863 pent
->plt
.offset
= (bfd_vma
) -1;
9866 h
->plt
.plist
= NULL
;
9872 h
->plt
.plist
= NULL
;
9879 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9880 to set up space for global entry stubs. These are put in glink,
9881 after the branch table. */
9884 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9886 struct bfd_link_info
*info
;
9887 struct ppc_link_hash_table
*htab
;
9888 struct plt_entry
*pent
;
9891 if (h
->root
.type
== bfd_link_hash_indirect
)
9894 if (!h
->pointer_equality_needed
)
9901 htab
= ppc_hash_table (info
);
9906 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9907 if (pent
->plt
.offset
!= (bfd_vma
) -1
9908 && pent
->addend
== 0)
9910 /* For ELFv2, if this symbol is not defined in a regular file
9911 and we are not generating a shared library or pie, then we
9912 need to define the symbol in the executable on a call stub.
9913 This is to avoid text relocations. */
9914 s
->size
= (s
->size
+ 15) & -16;
9915 h
->root
.type
= bfd_link_hash_defined
;
9916 h
->root
.u
.def
.section
= s
;
9917 h
->root
.u
.def
.value
= s
->size
;
9924 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9925 read-only sections. */
9928 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *inf
)
9932 if (h
->root
.type
== bfd_link_hash_indirect
)
9935 sec
= readonly_dynrelocs (h
);
9938 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9940 info
->flags
|= DF_TEXTREL
;
9941 info
->callbacks
->minfo
9942 (_("%B: dynamic relocation in read-only section `%A'\n"),
9945 /* Not an error, just cut short the traversal. */
9951 /* Set the sizes of the dynamic sections. */
9954 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9955 struct bfd_link_info
*info
)
9957 struct ppc_link_hash_table
*htab
;
9962 struct got_entry
*first_tlsld
;
9964 htab
= ppc_hash_table (info
);
9968 dynobj
= htab
->elf
.dynobj
;
9972 if (htab
->elf
.dynamic_sections_created
)
9974 /* Set the contents of the .interp section to the interpreter. */
9975 if (bfd_link_executable (info
) && !info
->nointerp
)
9977 s
= bfd_get_linker_section (dynobj
, ".interp");
9980 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9981 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9985 /* Set up .got offsets for local syms, and space for local dynamic
9987 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9989 struct got_entry
**lgot_ents
;
9990 struct got_entry
**end_lgot_ents
;
9991 struct plt_entry
**local_plt
;
9992 struct plt_entry
**end_local_plt
;
9993 unsigned char *lgot_masks
;
9994 bfd_size_type locsymcount
;
9995 Elf_Internal_Shdr
*symtab_hdr
;
9997 if (!is_ppc64_elf (ibfd
))
10000 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10002 struct ppc_dyn_relocs
*p
;
10004 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10006 if (!bfd_is_abs_section (p
->sec
)
10007 && bfd_is_abs_section (p
->sec
->output_section
))
10009 /* Input section has been discarded, either because
10010 it is a copy of a linkonce section or due to
10011 linker script /DISCARD/, so we'll be discarding
10014 else if (p
->count
!= 0)
10016 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10018 srel
= htab
->elf
.irelplt
;
10019 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10020 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10021 info
->flags
|= DF_TEXTREL
;
10026 lgot_ents
= elf_local_got_ents (ibfd
);
10030 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10031 locsymcount
= symtab_hdr
->sh_info
;
10032 end_lgot_ents
= lgot_ents
+ locsymcount
;
10033 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10034 end_local_plt
= local_plt
+ locsymcount
;
10035 lgot_masks
= (unsigned char *) end_local_plt
;
10036 s
= ppc64_elf_tdata (ibfd
)->got
;
10037 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10039 struct got_entry
**pent
, *ent
;
10042 while ((ent
= *pent
) != NULL
)
10043 if (ent
->got
.refcount
> 0)
10045 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10047 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10052 unsigned int ent_size
= 8;
10053 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10055 ent
->got
.offset
= s
->size
;
10056 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10061 s
->size
+= ent_size
;
10062 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10064 htab
->elf
.irelplt
->size
+= rel_size
;
10065 htab
->got_reli_size
+= rel_size
;
10067 else if (bfd_link_pic (info
)
10068 && !((ent
->tls_type
& TLS_TPREL
) != 0
10069 && bfd_link_executable (info
)))
10071 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10072 srel
->size
+= rel_size
;
10081 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10082 for (; local_plt
< end_local_plt
; ++local_plt
)
10084 struct plt_entry
*ent
;
10086 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10087 if (ent
->plt
.refcount
> 0)
10089 s
= htab
->elf
.iplt
;
10090 ent
->plt
.offset
= s
->size
;
10091 s
->size
+= PLT_ENTRY_SIZE (htab
);
10093 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10096 ent
->plt
.offset
= (bfd_vma
) -1;
10100 /* Allocate global sym .plt and .got entries, and space for global
10101 sym dynamic relocs. */
10102 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10103 /* Stash the end of glink branch table. */
10104 if (htab
->glink
!= NULL
)
10105 htab
->glink
->rawsize
= htab
->glink
->size
;
10107 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10108 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10110 first_tlsld
= NULL
;
10111 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10113 struct got_entry
*ent
;
10115 if (!is_ppc64_elf (ibfd
))
10118 ent
= ppc64_tlsld_got (ibfd
);
10119 if (ent
->got
.refcount
> 0)
10121 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10123 ent
->is_indirect
= TRUE
;
10124 ent
->got
.ent
= first_tlsld
;
10128 if (first_tlsld
== NULL
)
10130 s
= ppc64_elf_tdata (ibfd
)->got
;
10131 ent
->got
.offset
= s
->size
;
10134 if (bfd_link_pic (info
))
10136 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10137 srel
->size
+= sizeof (Elf64_External_Rela
);
10142 ent
->got
.offset
= (bfd_vma
) -1;
10145 /* We now have determined the sizes of the various dynamic sections.
10146 Allocate memory for them. */
10148 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10150 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10153 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10154 /* These haven't been allocated yet; don't strip. */
10156 else if (s
== htab
->elf
.sgot
10157 || s
== htab
->elf
.splt
10158 || s
== htab
->elf
.iplt
10159 || s
== htab
->glink
10160 || s
== htab
->elf
.sdynbss
10161 || s
== htab
->elf
.sdynrelro
)
10163 /* Strip this section if we don't need it; see the
10166 else if (s
== htab
->glink_eh_frame
)
10168 if (!bfd_is_abs_section (s
->output_section
))
10169 /* Not sized yet. */
10172 else if (CONST_STRNEQ (s
->name
, ".rela"))
10176 if (s
!= htab
->elf
.srelplt
)
10179 /* We use the reloc_count field as a counter if we need
10180 to copy relocs into the output file. */
10181 s
->reloc_count
= 0;
10186 /* It's not one of our sections, so don't allocate space. */
10192 /* If we don't need this section, strip it from the
10193 output file. This is mostly to handle .rela.bss and
10194 .rela.plt. We must create both sections in
10195 create_dynamic_sections, because they must be created
10196 before the linker maps input sections to output
10197 sections. The linker does that before
10198 adjust_dynamic_symbol is called, and it is that
10199 function which decides whether anything needs to go
10200 into these sections. */
10201 s
->flags
|= SEC_EXCLUDE
;
10205 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10208 /* Allocate memory for the section contents. We use bfd_zalloc
10209 here in case unused entries are not reclaimed before the
10210 section's contents are written out. This should not happen,
10211 but this way if it does we get a R_PPC64_NONE reloc in .rela
10212 sections instead of garbage.
10213 We also rely on the section contents being zero when writing
10214 the GOT and .dynrelro. */
10215 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10216 if (s
->contents
== NULL
)
10220 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10222 if (!is_ppc64_elf (ibfd
))
10225 s
= ppc64_elf_tdata (ibfd
)->got
;
10226 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10229 s
->flags
|= SEC_EXCLUDE
;
10232 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10233 if (s
->contents
== NULL
)
10237 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10241 s
->flags
|= SEC_EXCLUDE
;
10244 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10245 if (s
->contents
== NULL
)
10248 s
->reloc_count
= 0;
10253 if (htab
->elf
.dynamic_sections_created
)
10255 bfd_boolean tls_opt
;
10257 /* Add some entries to the .dynamic section. We fill in the
10258 values later, in ppc64_elf_finish_dynamic_sections, but we
10259 must add the entries now so that we get the correct size for
10260 the .dynamic section. The DT_DEBUG entry is filled in by the
10261 dynamic linker and used by the debugger. */
10262 #define add_dynamic_entry(TAG, VAL) \
10263 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10265 if (bfd_link_executable (info
))
10267 if (!add_dynamic_entry (DT_DEBUG
, 0))
10271 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10273 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10274 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10275 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10276 || !add_dynamic_entry (DT_JMPREL
, 0)
10277 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10281 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10283 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10284 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10288 tls_opt
= (htab
->params
->tls_get_addr_opt
10289 && htab
->tls_get_addr_fd
!= NULL
10290 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10291 if (tls_opt
|| !htab
->opd_abi
)
10293 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10299 if (!add_dynamic_entry (DT_RELA
, 0)
10300 || !add_dynamic_entry (DT_RELASZ
, 0)
10301 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10304 /* If any dynamic relocs apply to a read-only section,
10305 then we need a DT_TEXTREL entry. */
10306 if ((info
->flags
& DF_TEXTREL
) == 0)
10307 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10309 if ((info
->flags
& DF_TEXTREL
) != 0)
10311 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10316 #undef add_dynamic_entry
10321 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10324 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10326 if (h
->plt
.plist
!= NULL
10328 && !h
->pointer_equality_needed
)
10331 return _bfd_elf_hash_symbol (h
);
10334 /* Determine the type of stub needed, if any, for a call. */
10336 static inline enum ppc_stub_type
10337 ppc_type_of_stub (asection
*input_sec
,
10338 const Elf_Internal_Rela
*rel
,
10339 struct ppc_link_hash_entry
**hash
,
10340 struct plt_entry
**plt_ent
,
10341 bfd_vma destination
,
10342 unsigned long local_off
)
10344 struct ppc_link_hash_entry
*h
= *hash
;
10346 bfd_vma branch_offset
;
10347 bfd_vma max_branch_offset
;
10348 enum elf_ppc64_reloc_type r_type
;
10352 struct plt_entry
*ent
;
10353 struct ppc_link_hash_entry
*fdh
= h
;
10355 && h
->oh
->is_func_descriptor
)
10357 fdh
= ppc_follow_link (h
->oh
);
10361 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10362 if (ent
->addend
== rel
->r_addend
10363 && ent
->plt
.offset
!= (bfd_vma
) -1)
10366 return ppc_stub_plt_call
;
10369 /* Here, we know we don't have a plt entry. If we don't have a
10370 either a defined function descriptor or a defined entry symbol
10371 in a regular object file, then it is pointless trying to make
10372 any other type of stub. */
10373 if (!is_static_defined (&fdh
->elf
)
10374 && !is_static_defined (&h
->elf
))
10375 return ppc_stub_none
;
10377 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10379 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10380 struct plt_entry
**local_plt
= (struct plt_entry
**)
10381 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10382 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10384 if (local_plt
[r_symndx
] != NULL
)
10386 struct plt_entry
*ent
;
10388 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10389 if (ent
->addend
== rel
->r_addend
10390 && ent
->plt
.offset
!= (bfd_vma
) -1)
10393 return ppc_stub_plt_call
;
10398 /* Determine where the call point is. */
10399 location
= (input_sec
->output_offset
10400 + input_sec
->output_section
->vma
10403 branch_offset
= destination
- location
;
10404 r_type
= ELF64_R_TYPE (rel
->r_info
);
10406 /* Determine if a long branch stub is needed. */
10407 max_branch_offset
= 1 << 25;
10408 if (r_type
!= R_PPC64_REL24
)
10409 max_branch_offset
= 1 << 15;
10411 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10412 /* We need a stub. Figure out whether a long_branch or plt_branch
10413 is needed later. */
10414 return ppc_stub_long_branch
;
10416 return ppc_stub_none
;
10419 /* With power7 weakly ordered memory model, it is possible for ld.so
10420 to update a plt entry in one thread and have another thread see a
10421 stale zero toc entry. To avoid this we need some sort of acquire
10422 barrier in the call stub. One solution is to make the load of the
10423 toc word seem to appear to depend on the load of the function entry
10424 word. Another solution is to test for r2 being zero, and branch to
10425 the appropriate glink entry if so.
10427 . fake dep barrier compare
10428 . ld 12,xxx(2) ld 12,xxx(2)
10429 . mtctr 12 mtctr 12
10430 . xor 11,12,12 ld 2,xxx+8(2)
10431 . add 2,2,11 cmpldi 2,0
10432 . ld 2,xxx+8(2) bnectr+
10433 . bctr b <glink_entry>
10435 The solution involving the compare turns out to be faster, so
10436 that's what we use unless the branch won't reach. */
10438 #define ALWAYS_USE_FAKE_DEP 0
10439 #define ALWAYS_EMIT_R2SAVE 0
10441 #define PPC_LO(v) ((v) & 0xffff)
10442 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10443 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10445 static inline unsigned int
10446 plt_stub_size (struct ppc_link_hash_table
*htab
,
10447 struct ppc_stub_hash_entry
*stub_entry
,
10450 unsigned size
= 12;
10452 if (ALWAYS_EMIT_R2SAVE
10453 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10455 if (PPC_HA (off
) != 0)
10460 if (htab
->params
->plt_static_chain
)
10462 if (htab
->params
->plt_thread_safe
10463 && htab
->elf
.dynamic_sections_created
10464 && stub_entry
->h
!= NULL
10465 && stub_entry
->h
->elf
.dynindx
!= -1)
10467 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10470 if (stub_entry
->h
!= NULL
10471 && (stub_entry
->h
== htab
->tls_get_addr_fd
10472 || stub_entry
->h
== htab
->tls_get_addr
)
10473 && htab
->params
->tls_get_addr_opt
)
10476 if (ALWAYS_EMIT_R2SAVE
10477 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10483 /* Depending on the sign of plt_stub_align:
10484 If positive, return the padding to align to a 2**plt_stub_align
10486 If negative, if this stub would cross fewer 2**plt_stub_align
10487 boundaries if we align, then return the padding needed to do so. */
10489 static inline unsigned int
10490 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10491 struct ppc_stub_hash_entry
*stub_entry
,
10495 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10496 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10498 if (htab
->params
->plt_stub_align
>= 0)
10500 stub_align
= 1 << htab
->params
->plt_stub_align
;
10501 if ((stub_off
& (stub_align
- 1)) != 0)
10502 return stub_align
- (stub_off
& (stub_align
- 1));
10506 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10507 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10508 > ((stub_size
- 1) & -stub_align
))
10509 return stub_align
- (stub_off
& (stub_align
- 1));
10513 /* Build a .plt call stub. */
10515 static inline bfd_byte
*
10516 build_plt_stub (struct ppc_link_hash_table
*htab
,
10517 struct ppc_stub_hash_entry
*stub_entry
,
10518 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10520 bfd
*obfd
= htab
->params
->stub_bfd
;
10521 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10522 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10523 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10524 && htab
->elf
.dynamic_sections_created
10525 && stub_entry
->h
!= NULL
10526 && stub_entry
->h
->elf
.dynindx
!= -1);
10527 bfd_boolean use_fake_dep
= plt_thread_safe
;
10528 bfd_vma cmp_branch_off
= 0;
10530 if (!ALWAYS_USE_FAKE_DEP
10533 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10534 || stub_entry
->h
== htab
->tls_get_addr
)
10535 && htab
->params
->tls_get_addr_opt
))
10537 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10538 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10539 / PLT_ENTRY_SIZE (htab
));
10540 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10543 if (pltindex
> 32768)
10544 glinkoff
+= (pltindex
- 32768) * 4;
10546 + htab
->glink
->output_offset
10547 + htab
->glink
->output_section
->vma
);
10548 from
= (p
- stub_entry
->group
->stub_sec
->contents
10549 + 4 * (ALWAYS_EMIT_R2SAVE
10550 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10551 + 4 * (PPC_HA (offset
) != 0)
10552 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10553 != PPC_HA (offset
))
10554 + 4 * (plt_static_chain
!= 0)
10556 + stub_entry
->group
->stub_sec
->output_offset
10557 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10558 cmp_branch_off
= to
- from
;
10559 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10562 if (PPC_HA (offset
) != 0)
10566 if (ALWAYS_EMIT_R2SAVE
10567 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10568 r
[0].r_offset
+= 4;
10569 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10570 r
[1].r_offset
= r
[0].r_offset
+ 4;
10571 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10572 r
[1].r_addend
= r
[0].r_addend
;
10575 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10577 r
[2].r_offset
= r
[1].r_offset
+ 4;
10578 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10579 r
[2].r_addend
= r
[0].r_addend
;
10583 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10584 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10585 r
[2].r_addend
= r
[0].r_addend
+ 8;
10586 if (plt_static_chain
)
10588 r
[3].r_offset
= r
[2].r_offset
+ 4;
10589 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10590 r
[3].r_addend
= r
[0].r_addend
+ 16;
10595 if (ALWAYS_EMIT_R2SAVE
10596 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10597 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10600 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10601 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10605 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10606 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10609 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10611 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10614 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10619 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10620 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10622 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10623 if (plt_static_chain
)
10624 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10631 if (ALWAYS_EMIT_R2SAVE
10632 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10633 r
[0].r_offset
+= 4;
10634 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10637 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10639 r
[1].r_offset
= r
[0].r_offset
+ 4;
10640 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10641 r
[1].r_addend
= r
[0].r_addend
;
10645 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10646 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10647 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10648 if (plt_static_chain
)
10650 r
[2].r_offset
= r
[1].r_offset
+ 4;
10651 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10652 r
[2].r_addend
= r
[0].r_addend
+ 8;
10657 if (ALWAYS_EMIT_R2SAVE
10658 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10659 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10660 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10662 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10664 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10667 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10672 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10673 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10675 if (plt_static_chain
)
10676 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10677 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10680 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10682 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10683 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10684 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10687 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10691 /* Build a special .plt call stub for __tls_get_addr. */
10693 #define LD_R11_0R3 0xe9630000
10694 #define LD_R12_0R3 0xe9830000
10695 #define MR_R0_R3 0x7c601b78
10696 #define CMPDI_R11_0 0x2c2b0000
10697 #define ADD_R3_R12_R13 0x7c6c6a14
10698 #define BEQLR 0x4d820020
10699 #define MR_R3_R0 0x7c030378
10700 #define STD_R11_0R1 0xf9610000
10701 #define BCTRL 0x4e800421
10702 #define LD_R11_0R1 0xe9610000
10703 #define MTLR_R11 0x7d6803a6
10705 static inline bfd_byte
*
10706 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10707 struct ppc_stub_hash_entry
*stub_entry
,
10708 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10710 bfd
*obfd
= htab
->params
->stub_bfd
;
10712 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10713 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10714 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10715 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10716 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10717 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10718 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10720 r
[0].r_offset
+= 7 * 4;
10721 if (!ALWAYS_EMIT_R2SAVE
10722 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10723 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10725 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10726 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10729 r
[0].r_offset
+= 2 * 4;
10730 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10731 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10733 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10734 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10735 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10736 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10741 static Elf_Internal_Rela
*
10742 get_relocs (asection
*sec
, int count
)
10744 Elf_Internal_Rela
*relocs
;
10745 struct bfd_elf_section_data
*elfsec_data
;
10747 elfsec_data
= elf_section_data (sec
);
10748 relocs
= elfsec_data
->relocs
;
10749 if (relocs
== NULL
)
10751 bfd_size_type relsize
;
10752 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10753 relocs
= bfd_alloc (sec
->owner
, relsize
);
10754 if (relocs
== NULL
)
10756 elfsec_data
->relocs
= relocs
;
10757 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10758 sizeof (Elf_Internal_Shdr
));
10759 if (elfsec_data
->rela
.hdr
== NULL
)
10761 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10762 * sizeof (Elf64_External_Rela
));
10763 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10764 sec
->reloc_count
= 0;
10766 relocs
+= sec
->reloc_count
;
10767 sec
->reloc_count
+= count
;
10772 get_r2off (struct bfd_link_info
*info
,
10773 struct ppc_stub_hash_entry
*stub_entry
)
10775 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10776 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10780 /* Support linking -R objects. Get the toc pointer from the
10783 if (!htab
->opd_abi
)
10785 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10786 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10788 if (strcmp (opd
->name
, ".opd") != 0
10789 || opd
->reloc_count
!= 0)
10791 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10792 stub_entry
->h
->elf
.root
.root
.string
);
10793 bfd_set_error (bfd_error_bad_value
);
10794 return (bfd_vma
) -1;
10796 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10797 return (bfd_vma
) -1;
10798 r2off
= bfd_get_64 (opd
->owner
, buf
);
10799 r2off
-= elf_gp (info
->output_bfd
);
10801 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10806 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10808 struct ppc_stub_hash_entry
*stub_entry
;
10809 struct ppc_branch_hash_entry
*br_entry
;
10810 struct bfd_link_info
*info
;
10811 struct ppc_link_hash_table
*htab
;
10816 Elf_Internal_Rela
*r
;
10819 /* Massage our args to the form they really have. */
10820 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10823 htab
= ppc_hash_table (info
);
10827 /* Make a note of the offset within the stubs for this entry. */
10828 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10829 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10831 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10832 switch (stub_entry
->stub_type
)
10834 case ppc_stub_long_branch
:
10835 case ppc_stub_long_branch_r2off
:
10836 /* Branches are relative. This is where we are going to. */
10837 dest
= (stub_entry
->target_value
10838 + stub_entry
->target_section
->output_offset
10839 + stub_entry
->target_section
->output_section
->vma
);
10840 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10843 /* And this is where we are coming from. */
10844 off
-= (stub_entry
->stub_offset
10845 + stub_entry
->group
->stub_sec
->output_offset
10846 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10849 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10851 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10853 if (r2off
== (bfd_vma
) -1)
10855 htab
->stub_error
= TRUE
;
10858 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10861 if (PPC_HA (r2off
) != 0)
10863 bfd_put_32 (htab
->params
->stub_bfd
,
10864 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10868 if (PPC_LO (r2off
) != 0)
10870 bfd_put_32 (htab
->params
->stub_bfd
,
10871 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10877 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10879 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10881 info
->callbacks
->einfo
10882 (_("%P: long branch stub `%s' offset overflow\n"),
10883 stub_entry
->root
.string
);
10884 htab
->stub_error
= TRUE
;
10888 if (info
->emitrelocations
)
10890 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10893 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10894 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10895 r
->r_addend
= dest
;
10896 if (stub_entry
->h
!= NULL
)
10898 struct elf_link_hash_entry
**hashes
;
10899 unsigned long symndx
;
10900 struct ppc_link_hash_entry
*h
;
10902 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10903 if (hashes
== NULL
)
10905 bfd_size_type hsize
;
10907 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10908 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10909 if (hashes
== NULL
)
10911 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10912 htab
->stub_globals
= 1;
10914 symndx
= htab
->stub_globals
++;
10916 hashes
[symndx
] = &h
->elf
;
10917 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10918 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10919 h
= ppc_follow_link (h
->oh
);
10920 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10921 /* H is an opd symbol. The addend must be zero. */
10925 off
= (h
->elf
.root
.u
.def
.value
10926 + h
->elf
.root
.u
.def
.section
->output_offset
10927 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10928 r
->r_addend
-= off
;
10934 case ppc_stub_plt_branch
:
10935 case ppc_stub_plt_branch_r2off
:
10936 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10937 stub_entry
->root
.string
+ 9,
10939 if (br_entry
== NULL
)
10941 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10942 stub_entry
->root
.string
);
10943 htab
->stub_error
= TRUE
;
10947 dest
= (stub_entry
->target_value
10948 + stub_entry
->target_section
->output_offset
10949 + stub_entry
->target_section
->output_section
->vma
);
10950 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10951 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10953 bfd_put_64 (htab
->brlt
->owner
, dest
,
10954 htab
->brlt
->contents
+ br_entry
->offset
);
10956 if (br_entry
->iter
== htab
->stub_iteration
)
10958 br_entry
->iter
= 0;
10960 if (htab
->relbrlt
!= NULL
)
10962 /* Create a reloc for the branch lookup table entry. */
10963 Elf_Internal_Rela rela
;
10966 rela
.r_offset
= (br_entry
->offset
10967 + htab
->brlt
->output_offset
10968 + htab
->brlt
->output_section
->vma
);
10969 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10970 rela
.r_addend
= dest
;
10972 rl
= htab
->relbrlt
->contents
;
10973 rl
+= (htab
->relbrlt
->reloc_count
++
10974 * sizeof (Elf64_External_Rela
));
10975 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10977 else if (info
->emitrelocations
)
10979 r
= get_relocs (htab
->brlt
, 1);
10982 /* brlt, being SEC_LINKER_CREATED does not go through the
10983 normal reloc processing. Symbols and offsets are not
10984 translated from input file to output file form, so
10985 set up the offset per the output file. */
10986 r
->r_offset
= (br_entry
->offset
10987 + htab
->brlt
->output_offset
10988 + htab
->brlt
->output_section
->vma
);
10989 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10990 r
->r_addend
= dest
;
10994 dest
= (br_entry
->offset
10995 + htab
->brlt
->output_offset
10996 + htab
->brlt
->output_section
->vma
);
10999 - elf_gp (htab
->brlt
->output_section
->owner
)
11000 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11002 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11004 info
->callbacks
->einfo
11005 (_("%P: linkage table error against `%T'\n"),
11006 stub_entry
->root
.string
);
11007 bfd_set_error (bfd_error_bad_value
);
11008 htab
->stub_error
= TRUE
;
11012 if (info
->emitrelocations
)
11014 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11017 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11018 if (bfd_big_endian (info
->output_bfd
))
11019 r
[0].r_offset
+= 2;
11020 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11021 r
[0].r_offset
+= 4;
11022 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11023 r
[0].r_addend
= dest
;
11024 if (PPC_HA (off
) != 0)
11026 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11027 r
[1].r_offset
= r
[0].r_offset
+ 4;
11028 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11029 r
[1].r_addend
= r
[0].r_addend
;
11033 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11035 if (PPC_HA (off
) != 0)
11038 bfd_put_32 (htab
->params
->stub_bfd
,
11039 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11041 bfd_put_32 (htab
->params
->stub_bfd
,
11042 LD_R12_0R12
| PPC_LO (off
), loc
);
11047 bfd_put_32 (htab
->params
->stub_bfd
,
11048 LD_R12_0R2
| PPC_LO (off
), loc
);
11053 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11055 if (r2off
== (bfd_vma
) -1)
11057 htab
->stub_error
= TRUE
;
11061 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11064 if (PPC_HA (off
) != 0)
11067 bfd_put_32 (htab
->params
->stub_bfd
,
11068 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11070 bfd_put_32 (htab
->params
->stub_bfd
,
11071 LD_R12_0R12
| PPC_LO (off
), loc
);
11074 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11076 if (PPC_HA (r2off
) != 0)
11080 bfd_put_32 (htab
->params
->stub_bfd
,
11081 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11083 if (PPC_LO (r2off
) != 0)
11087 bfd_put_32 (htab
->params
->stub_bfd
,
11088 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11092 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11094 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11097 case ppc_stub_plt_call
:
11098 case ppc_stub_plt_call_r2save
:
11099 if (stub_entry
->h
!= NULL
11100 && stub_entry
->h
->is_func_descriptor
11101 && stub_entry
->h
->oh
!= NULL
)
11103 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11105 /* If the old-ABI "dot-symbol" is undefined make it weak so
11106 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11107 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11108 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11109 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11110 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11113 /* Now build the stub. */
11114 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11115 if (dest
>= (bfd_vma
) -2)
11118 plt
= htab
->elf
.splt
;
11119 if (!htab
->elf
.dynamic_sections_created
11120 || stub_entry
->h
== NULL
11121 || stub_entry
->h
->elf
.dynindx
== -1)
11122 plt
= htab
->elf
.iplt
;
11124 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11126 if (stub_entry
->h
== NULL
11127 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11129 Elf_Internal_Rela rela
;
11132 rela
.r_offset
= dest
;
11134 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11136 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11137 rela
.r_addend
= (stub_entry
->target_value
11138 + stub_entry
->target_section
->output_offset
11139 + stub_entry
->target_section
->output_section
->vma
);
11141 rl
= (htab
->elf
.irelplt
->contents
11142 + (htab
->elf
.irelplt
->reloc_count
++
11143 * sizeof (Elf64_External_Rela
)));
11144 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11145 stub_entry
->plt_ent
->plt
.offset
|= 1;
11146 htab
->local_ifunc_resolver
= 1;
11150 - elf_gp (plt
->output_section
->owner
)
11151 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11153 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11155 info
->callbacks
->einfo
11156 /* xgettext:c-format */
11157 (_("%P: linkage table error against `%T'\n"),
11158 stub_entry
->h
!= NULL
11159 ? stub_entry
->h
->elf
.root
.root
.string
11161 bfd_set_error (bfd_error_bad_value
);
11162 htab
->stub_error
= TRUE
;
11166 if (htab
->params
->plt_stub_align
!= 0)
11168 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11170 stub_entry
->group
->stub_sec
->size
+= pad
;
11171 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11176 if (info
->emitrelocations
)
11178 r
= get_relocs (stub_entry
->group
->stub_sec
,
11179 ((PPC_HA (off
) != 0)
11181 ? 2 + (htab
->params
->plt_static_chain
11182 && PPC_HA (off
+ 16) == PPC_HA (off
))
11186 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11187 if (bfd_big_endian (info
->output_bfd
))
11188 r
[0].r_offset
+= 2;
11189 r
[0].r_addend
= dest
;
11191 if (stub_entry
->h
!= NULL
11192 && (stub_entry
->h
== htab
->tls_get_addr_fd
11193 || stub_entry
->h
== htab
->tls_get_addr
)
11194 && htab
->params
->tls_get_addr_opt
)
11195 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11197 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11201 case ppc_stub_save_res
:
11209 stub_entry
->group
->stub_sec
->size
+= size
;
11211 if (htab
->params
->emit_stub_syms
)
11213 struct elf_link_hash_entry
*h
;
11216 const char *const stub_str
[] = { "long_branch",
11217 "long_branch_r2off",
11219 "plt_branch_r2off",
11223 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11224 len2
= strlen (stub_entry
->root
.string
);
11225 name
= bfd_malloc (len1
+ len2
+ 2);
11228 memcpy (name
, stub_entry
->root
.string
, 9);
11229 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11230 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11231 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11234 if (h
->root
.type
== bfd_link_hash_new
)
11236 h
->root
.type
= bfd_link_hash_defined
;
11237 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11238 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11239 h
->ref_regular
= 1;
11240 h
->def_regular
= 1;
11241 h
->ref_regular_nonweak
= 1;
11242 h
->forced_local
= 1;
11244 h
->root
.linker_def
= 1;
11251 /* As above, but don't actually build the stub. Just bump offset so
11252 we know stub section sizes, and select plt_branch stubs where
11253 long_branch stubs won't do. */
11256 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11258 struct ppc_stub_hash_entry
*stub_entry
;
11259 struct bfd_link_info
*info
;
11260 struct ppc_link_hash_table
*htab
;
11264 /* Massage our args to the form they really have. */
11265 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11268 htab
= ppc_hash_table (info
);
11272 if (stub_entry
->h
!= NULL
11273 && stub_entry
->h
->save_res
11274 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11275 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11277 /* Don't make stubs to out-of-line register save/restore
11278 functions. Instead, emit copies of the functions. */
11279 stub_entry
->group
->needs_save_res
= 1;
11280 stub_entry
->stub_type
= ppc_stub_save_res
;
11284 if (stub_entry
->stub_type
== ppc_stub_plt_call
11285 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11288 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11289 if (off
>= (bfd_vma
) -2)
11291 plt
= htab
->elf
.splt
;
11292 if (!htab
->elf
.dynamic_sections_created
11293 || stub_entry
->h
== NULL
11294 || stub_entry
->h
->elf
.dynindx
== -1)
11295 plt
= htab
->elf
.iplt
;
11296 off
+= (plt
->output_offset
11297 + plt
->output_section
->vma
11298 - elf_gp (plt
->output_section
->owner
)
11299 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11301 size
= plt_stub_size (htab
, stub_entry
, off
);
11302 if (stub_entry
->h
!= NULL
11303 && (stub_entry
->h
== htab
->tls_get_addr_fd
11304 || stub_entry
->h
== htab
->tls_get_addr
)
11305 && htab
->params
->tls_get_addr_opt
11306 && (ALWAYS_EMIT_R2SAVE
11307 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11308 stub_entry
->group
->tls_get_addr_opt_bctrl
11309 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11311 if (htab
->params
->plt_stub_align
)
11312 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11313 if (info
->emitrelocations
)
11315 stub_entry
->group
->stub_sec
->reloc_count
11316 += ((PPC_HA (off
) != 0)
11318 ? 2 + (htab
->params
->plt_static_chain
11319 && PPC_HA (off
+ 16) == PPC_HA (off
))
11321 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11326 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11329 bfd_vma local_off
= 0;
11331 off
= (stub_entry
->target_value
11332 + stub_entry
->target_section
->output_offset
11333 + stub_entry
->target_section
->output_section
->vma
);
11334 off
-= (stub_entry
->group
->stub_sec
->size
11335 + stub_entry
->group
->stub_sec
->output_offset
11336 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11338 /* Reset the stub type from the plt variant in case we now
11339 can reach with a shorter stub. */
11340 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11341 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11344 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11346 r2off
= get_r2off (info
, stub_entry
);
11347 if (r2off
== (bfd_vma
) -1)
11349 htab
->stub_error
= TRUE
;
11353 if (PPC_HA (r2off
) != 0)
11355 if (PPC_LO (r2off
) != 0)
11360 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11362 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11363 Do the same for -R objects without function descriptors. */
11364 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11365 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11367 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11369 struct ppc_branch_hash_entry
*br_entry
;
11371 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11372 stub_entry
->root
.string
+ 9,
11374 if (br_entry
== NULL
)
11376 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11377 stub_entry
->root
.string
);
11378 htab
->stub_error
= TRUE
;
11382 if (br_entry
->iter
!= htab
->stub_iteration
)
11384 br_entry
->iter
= htab
->stub_iteration
;
11385 br_entry
->offset
= htab
->brlt
->size
;
11386 htab
->brlt
->size
+= 8;
11388 if (htab
->relbrlt
!= NULL
)
11389 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11390 else if (info
->emitrelocations
)
11392 htab
->brlt
->reloc_count
+= 1;
11393 htab
->brlt
->flags
|= SEC_RELOC
;
11397 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11398 off
= (br_entry
->offset
11399 + htab
->brlt
->output_offset
11400 + htab
->brlt
->output_section
->vma
11401 - elf_gp (htab
->brlt
->output_section
->owner
)
11402 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11404 if (info
->emitrelocations
)
11406 stub_entry
->group
->stub_sec
->reloc_count
11407 += 1 + (PPC_HA (off
) != 0);
11408 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11411 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11414 if (PPC_HA (off
) != 0)
11420 if (PPC_HA (off
) != 0)
11423 if (PPC_HA (r2off
) != 0)
11425 if (PPC_LO (r2off
) != 0)
11429 else if (info
->emitrelocations
)
11431 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11432 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11436 stub_entry
->group
->stub_sec
->size
+= size
;
11440 /* Set up various things so that we can make a list of input sections
11441 for each output section included in the link. Returns -1 on error,
11442 0 when no stubs will be needed, and 1 on success. */
11445 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11449 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11454 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11455 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11456 htab
->sec_info
= bfd_zmalloc (amt
);
11457 if (htab
->sec_info
== NULL
)
11460 /* Set toc_off for com, und, abs and ind sections. */
11461 for (id
= 0; id
< 3; id
++)
11462 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11467 /* Set up for first pass at multitoc partitioning. */
11470 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11472 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11474 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11475 htab
->toc_bfd
= NULL
;
11476 htab
->toc_first_sec
= NULL
;
11479 /* The linker repeatedly calls this function for each TOC input section
11480 and linker generated GOT section. Group input bfds such that the toc
11481 within a group is less than 64k in size. */
11484 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11486 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11487 bfd_vma addr
, off
, limit
;
11492 if (!htab
->second_toc_pass
)
11494 /* Keep track of the first .toc or .got section for this input bfd. */
11495 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11499 htab
->toc_bfd
= isec
->owner
;
11500 htab
->toc_first_sec
= isec
;
11503 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11504 off
= addr
- htab
->toc_curr
;
11505 limit
= 0x80008000;
11506 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11508 if (off
+ isec
->size
> limit
)
11510 addr
= (htab
->toc_first_sec
->output_offset
11511 + htab
->toc_first_sec
->output_section
->vma
);
11512 htab
->toc_curr
= addr
;
11513 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11516 /* toc_curr is the base address of this toc group. Set elf_gp
11517 for the input section to be the offset relative to the
11518 output toc base plus 0x8000. Making the input elf_gp an
11519 offset allows us to move the toc as a whole without
11520 recalculating input elf_gp. */
11521 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11522 off
+= TOC_BASE_OFF
;
11524 /* Die if someone uses a linker script that doesn't keep input
11525 file .toc and .got together. */
11527 && elf_gp (isec
->owner
) != 0
11528 && elf_gp (isec
->owner
) != off
)
11531 elf_gp (isec
->owner
) = off
;
11535 /* During the second pass toc_first_sec points to the start of
11536 a toc group, and toc_curr is used to track the old elf_gp.
11537 We use toc_bfd to ensure we only look at each bfd once. */
11538 if (htab
->toc_bfd
== isec
->owner
)
11540 htab
->toc_bfd
= isec
->owner
;
11542 if (htab
->toc_first_sec
== NULL
11543 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11545 htab
->toc_curr
= elf_gp (isec
->owner
);
11546 htab
->toc_first_sec
= isec
;
11548 addr
= (htab
->toc_first_sec
->output_offset
11549 + htab
->toc_first_sec
->output_section
->vma
);
11550 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11551 elf_gp (isec
->owner
) = off
;
11556 /* Called via elf_link_hash_traverse to merge GOT entries for global
11560 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11562 if (h
->root
.type
== bfd_link_hash_indirect
)
11565 merge_got_entries (&h
->got
.glist
);
11570 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11574 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11576 struct got_entry
*gent
;
11578 if (h
->root
.type
== bfd_link_hash_indirect
)
11581 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11582 if (!gent
->is_indirect
)
11583 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11587 /* Called on the first multitoc pass after the last call to
11588 ppc64_elf_next_toc_section. This function removes duplicate GOT
11592 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11594 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11595 struct bfd
*ibfd
, *ibfd2
;
11596 bfd_boolean done_something
;
11598 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11600 if (!htab
->do_multi_toc
)
11603 /* Merge global sym got entries within a toc group. */
11604 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11606 /* And tlsld_got. */
11607 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11609 struct got_entry
*ent
, *ent2
;
11611 if (!is_ppc64_elf (ibfd
))
11614 ent
= ppc64_tlsld_got (ibfd
);
11615 if (!ent
->is_indirect
11616 && ent
->got
.offset
!= (bfd_vma
) -1)
11618 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11620 if (!is_ppc64_elf (ibfd2
))
11623 ent2
= ppc64_tlsld_got (ibfd2
);
11624 if (!ent2
->is_indirect
11625 && ent2
->got
.offset
!= (bfd_vma
) -1
11626 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11628 ent2
->is_indirect
= TRUE
;
11629 ent2
->got
.ent
= ent
;
11635 /* Zap sizes of got sections. */
11636 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11637 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11638 htab
->got_reli_size
= 0;
11640 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11642 asection
*got
, *relgot
;
11644 if (!is_ppc64_elf (ibfd
))
11647 got
= ppc64_elf_tdata (ibfd
)->got
;
11650 got
->rawsize
= got
->size
;
11652 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11653 relgot
->rawsize
= relgot
->size
;
11658 /* Now reallocate the got, local syms first. We don't need to
11659 allocate section contents again since we never increase size. */
11660 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11662 struct got_entry
**lgot_ents
;
11663 struct got_entry
**end_lgot_ents
;
11664 struct plt_entry
**local_plt
;
11665 struct plt_entry
**end_local_plt
;
11666 unsigned char *lgot_masks
;
11667 bfd_size_type locsymcount
;
11668 Elf_Internal_Shdr
*symtab_hdr
;
11671 if (!is_ppc64_elf (ibfd
))
11674 lgot_ents
= elf_local_got_ents (ibfd
);
11678 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11679 locsymcount
= symtab_hdr
->sh_info
;
11680 end_lgot_ents
= lgot_ents
+ locsymcount
;
11681 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11682 end_local_plt
= local_plt
+ locsymcount
;
11683 lgot_masks
= (unsigned char *) end_local_plt
;
11684 s
= ppc64_elf_tdata (ibfd
)->got
;
11685 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11687 struct got_entry
*ent
;
11689 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11691 unsigned int ent_size
= 8;
11692 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11694 ent
->got
.offset
= s
->size
;
11695 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11700 s
->size
+= ent_size
;
11701 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11703 htab
->elf
.irelplt
->size
+= rel_size
;
11704 htab
->got_reli_size
+= rel_size
;
11706 else if (bfd_link_pic (info
))
11708 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11709 srel
->size
+= rel_size
;
11715 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11717 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11719 struct got_entry
*ent
;
11721 if (!is_ppc64_elf (ibfd
))
11724 ent
= ppc64_tlsld_got (ibfd
);
11725 if (!ent
->is_indirect
11726 && ent
->got
.offset
!= (bfd_vma
) -1)
11728 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11729 ent
->got
.offset
= s
->size
;
11731 if (bfd_link_pic (info
))
11733 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11734 srel
->size
+= sizeof (Elf64_External_Rela
);
11739 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11740 if (!done_something
)
11741 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11745 if (!is_ppc64_elf (ibfd
))
11748 got
= ppc64_elf_tdata (ibfd
)->got
;
11751 done_something
= got
->rawsize
!= got
->size
;
11752 if (done_something
)
11757 if (done_something
)
11758 (*htab
->params
->layout_sections_again
) ();
11760 /* Set up for second pass over toc sections to recalculate elf_gp
11761 on input sections. */
11762 htab
->toc_bfd
= NULL
;
11763 htab
->toc_first_sec
= NULL
;
11764 htab
->second_toc_pass
= TRUE
;
11765 return done_something
;
11768 /* Called after second pass of multitoc partitioning. */
11771 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11773 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11775 /* After the second pass, toc_curr tracks the TOC offset used
11776 for code sections below in ppc64_elf_next_input_section. */
11777 htab
->toc_curr
= TOC_BASE_OFF
;
11780 /* No toc references were found in ISEC. If the code in ISEC makes no
11781 calls, then there's no need to use toc adjusting stubs when branching
11782 into ISEC. Actually, indirect calls from ISEC are OK as they will
11783 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11784 needed, and 2 if a cyclical call-graph was found but no other reason
11785 for a stub was detected. If called from the top level, a return of
11786 2 means the same as a return of 0. */
11789 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11793 /* Mark this section as checked. */
11794 isec
->call_check_done
= 1;
11796 /* We know none of our code bearing sections will need toc stubs. */
11797 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11800 if (isec
->size
== 0)
11803 if (isec
->output_section
== NULL
)
11807 if (isec
->reloc_count
!= 0)
11809 Elf_Internal_Rela
*relstart
, *rel
;
11810 Elf_Internal_Sym
*local_syms
;
11811 struct ppc_link_hash_table
*htab
;
11813 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11814 info
->keep_memory
);
11815 if (relstart
== NULL
)
11818 /* Look for branches to outside of this section. */
11820 htab
= ppc_hash_table (info
);
11824 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11826 enum elf_ppc64_reloc_type r_type
;
11827 unsigned long r_symndx
;
11828 struct elf_link_hash_entry
*h
;
11829 struct ppc_link_hash_entry
*eh
;
11830 Elf_Internal_Sym
*sym
;
11832 struct _opd_sec_data
*opd
;
11836 r_type
= ELF64_R_TYPE (rel
->r_info
);
11837 if (r_type
!= R_PPC64_REL24
11838 && r_type
!= R_PPC64_REL14
11839 && r_type
!= R_PPC64_REL14_BRTAKEN
11840 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11843 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11844 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11851 /* Calls to dynamic lib functions go through a plt call stub
11853 eh
= (struct ppc_link_hash_entry
*) h
;
11855 && (eh
->elf
.plt
.plist
!= NULL
11857 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11863 if (sym_sec
== NULL
)
11864 /* Ignore other undefined symbols. */
11867 /* Assume branches to other sections not included in the
11868 link need stubs too, to cover -R and absolute syms. */
11869 if (sym_sec
->output_section
== NULL
)
11876 sym_value
= sym
->st_value
;
11879 if (h
->root
.type
!= bfd_link_hash_defined
11880 && h
->root
.type
!= bfd_link_hash_defweak
)
11882 sym_value
= h
->root
.u
.def
.value
;
11884 sym_value
+= rel
->r_addend
;
11886 /* If this branch reloc uses an opd sym, find the code section. */
11887 opd
= get_opd_info (sym_sec
);
11890 if (h
== NULL
&& opd
->adjust
!= NULL
)
11894 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11896 /* Assume deleted functions won't ever be called. */
11898 sym_value
+= adjust
;
11901 dest
= opd_entry_value (sym_sec
, sym_value
,
11902 &sym_sec
, NULL
, FALSE
);
11903 if (dest
== (bfd_vma
) -1)
11908 + sym_sec
->output_offset
11909 + sym_sec
->output_section
->vma
);
11911 /* Ignore branch to self. */
11912 if (sym_sec
== isec
)
11915 /* If the called function uses the toc, we need a stub. */
11916 if (sym_sec
->has_toc_reloc
11917 || sym_sec
->makes_toc_func_call
)
11923 /* Assume any branch that needs a long branch stub might in fact
11924 need a plt_branch stub. A plt_branch stub uses r2. */
11925 else if (dest
- (isec
->output_offset
11926 + isec
->output_section
->vma
11927 + rel
->r_offset
) + (1 << 25)
11928 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11936 /* If calling back to a section in the process of being
11937 tested, we can't say for sure that no toc adjusting stubs
11938 are needed, so don't return zero. */
11939 else if (sym_sec
->call_check_in_progress
)
11942 /* Branches to another section that itself doesn't have any TOC
11943 references are OK. Recursively call ourselves to check. */
11944 else if (!sym_sec
->call_check_done
)
11948 /* Mark current section as indeterminate, so that other
11949 sections that call back to current won't be marked as
11951 isec
->call_check_in_progress
= 1;
11952 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11953 isec
->call_check_in_progress
= 0;
11964 if (local_syms
!= NULL
11965 && (elf_symtab_hdr (isec
->owner
).contents
11966 != (unsigned char *) local_syms
))
11968 if (elf_section_data (isec
)->relocs
!= relstart
)
11973 && isec
->map_head
.s
!= NULL
11974 && (strcmp (isec
->output_section
->name
, ".init") == 0
11975 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11977 if (isec
->map_head
.s
->has_toc_reloc
11978 || isec
->map_head
.s
->makes_toc_func_call
)
11980 else if (!isec
->map_head
.s
->call_check_done
)
11983 isec
->call_check_in_progress
= 1;
11984 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11985 isec
->call_check_in_progress
= 0;
11992 isec
->makes_toc_func_call
= 1;
11997 /* The linker repeatedly calls this function for each input section,
11998 in the order that input sections are linked into output sections.
11999 Build lists of input sections to determine groupings between which
12000 we may insert linker stubs. */
12003 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12005 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12010 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12011 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12013 /* This happens to make the list in reverse order,
12014 which is what we want. */
12015 htab
->sec_info
[isec
->id
].u
.list
12016 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12017 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12020 if (htab
->multi_toc_needed
)
12022 /* Analyse sections that aren't already flagged as needing a
12023 valid toc pointer. Exclude .fixup for the linux kernel.
12024 .fixup contains branches, but only back to the function that
12025 hit an exception. */
12026 if (!(isec
->has_toc_reloc
12027 || (isec
->flags
& SEC_CODE
) == 0
12028 || strcmp (isec
->name
, ".fixup") == 0
12029 || isec
->call_check_done
))
12031 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12034 /* Make all sections use the TOC assigned for this object file.
12035 This will be wrong for pasted sections; We fix that in
12036 check_pasted_section(). */
12037 if (elf_gp (isec
->owner
) != 0)
12038 htab
->toc_curr
= elf_gp (isec
->owner
);
12041 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12045 /* Check that all .init and .fini sections use the same toc, if they
12046 have toc relocs. */
12049 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12051 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12055 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12056 bfd_vma toc_off
= 0;
12059 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12060 if (i
->has_toc_reloc
)
12063 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12064 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12069 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12070 if (i
->makes_toc_func_call
)
12072 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12076 /* Make sure the whole pasted function uses the same toc offset. */
12078 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12079 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12085 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12087 return (check_pasted_section (info
, ".init")
12088 & check_pasted_section (info
, ".fini"));
12091 /* See whether we can group stub sections together. Grouping stub
12092 sections may result in fewer stubs. More importantly, we need to
12093 put all .init* and .fini* stubs at the beginning of the .init or
12094 .fini output sections respectively, because glibc splits the
12095 _init and _fini functions into multiple parts. Putting a stub in
12096 the middle of a function is not a good idea. */
12099 group_sections (struct bfd_link_info
*info
,
12100 bfd_size_type stub_group_size
,
12101 bfd_boolean stubs_always_before_branch
)
12103 struct ppc_link_hash_table
*htab
;
12105 bfd_boolean suppress_size_errors
;
12107 htab
= ppc_hash_table (info
);
12111 suppress_size_errors
= FALSE
;
12112 if (stub_group_size
== 1)
12114 /* Default values. */
12115 if (stubs_always_before_branch
)
12116 stub_group_size
= 0x1e00000;
12118 stub_group_size
= 0x1c00000;
12119 suppress_size_errors
= TRUE
;
12122 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12126 if (osec
->id
>= htab
->sec_info_arr_size
)
12129 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12130 while (tail
!= NULL
)
12134 bfd_size_type total
;
12135 bfd_boolean big_sec
;
12137 struct map_stub
*group
;
12138 bfd_size_type group_size
;
12141 total
= tail
->size
;
12142 group_size
= (ppc64_elf_section_data (tail
) != NULL
12143 && ppc64_elf_section_data (tail
)->has_14bit_branch
12144 ? stub_group_size
>> 10 : stub_group_size
);
12146 big_sec
= total
> group_size
;
12147 if (big_sec
&& !suppress_size_errors
)
12148 /* xgettext:c-format */
12149 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12150 tail
->owner
, tail
);
12151 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12153 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12154 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12155 < (ppc64_elf_section_data (prev
) != NULL
12156 && ppc64_elf_section_data (prev
)->has_14bit_branch
12157 ? (group_size
= stub_group_size
>> 10) : group_size
))
12158 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12161 /* OK, the size from the start of CURR to the end is less
12162 than group_size and thus can be handled by one stub
12163 section. (or the tail section is itself larger than
12164 group_size, in which case we may be toast.) We should
12165 really be keeping track of the total size of stubs added
12166 here, as stubs contribute to the final output section
12167 size. That's a little tricky, and this way will only
12168 break if stubs added make the total size more than 2^25,
12169 ie. for the default stub_group_size, if stubs total more
12170 than 2097152 bytes, or nearly 75000 plt call stubs. */
12171 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12174 group
->link_sec
= curr
;
12175 group
->stub_sec
= NULL
;
12176 group
->needs_save_res
= 0;
12177 group
->tls_get_addr_opt_bctrl
= -1u;
12178 group
->next
= htab
->group
;
12179 htab
->group
= group
;
12182 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12183 /* Set up this stub group. */
12184 htab
->sec_info
[tail
->id
].u
.group
= group
;
12186 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12188 /* But wait, there's more! Input sections up to group_size
12189 bytes before the stub section can be handled by it too.
12190 Don't do this if we have a really large section after the
12191 stubs, as adding more stubs increases the chance that
12192 branches may not reach into the stub section. */
12193 if (!stubs_always_before_branch
&& !big_sec
)
12196 while (prev
!= NULL
12197 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12198 < (ppc64_elf_section_data (prev
) != NULL
12199 && ppc64_elf_section_data (prev
)->has_14bit_branch
12200 ? (group_size
= stub_group_size
>> 10) : group_size
))
12201 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12204 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12205 htab
->sec_info
[tail
->id
].u
.group
= group
;
12214 static const unsigned char glink_eh_frame_cie
[] =
12216 0, 0, 0, 16, /* length. */
12217 0, 0, 0, 0, /* id. */
12218 1, /* CIE version. */
12219 'z', 'R', 0, /* Augmentation string. */
12220 4, /* Code alignment. */
12221 0x78, /* Data alignment. */
12223 1, /* Augmentation size. */
12224 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12225 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12229 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12231 size_t this_size
= 17;
12232 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12234 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12237 else if (to_bctrl
< 256)
12239 else if (to_bctrl
< 65536)
12245 this_size
= (this_size
+ align
- 1) & -align
;
12249 /* Stripping output sections is normally done before dynamic section
12250 symbols have been allocated. This function is called later, and
12251 handles cases like htab->brlt which is mapped to its own output
12255 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12257 if (isec
->size
== 0
12258 && isec
->output_section
->size
== 0
12259 && !(isec
->output_section
->flags
& SEC_KEEP
)
12260 && !bfd_section_removed_from_list (info
->output_bfd
,
12261 isec
->output_section
)
12262 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12264 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12265 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12266 info
->output_bfd
->section_count
--;
12270 /* Determine and set the size of the stub section for a final link.
12272 The basic idea here is to examine all the relocations looking for
12273 PC-relative calls to a target that is unreachable with a "bl"
12277 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12279 bfd_size_type stub_group_size
;
12280 bfd_boolean stubs_always_before_branch
;
12281 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12286 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12287 htab
->params
->plt_thread_safe
= 1;
12288 if (!htab
->opd_abi
)
12289 htab
->params
->plt_thread_safe
= 0;
12290 else if (htab
->params
->plt_thread_safe
== -1)
12292 static const char *const thread_starter
[] =
12296 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12298 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12299 "mq_notify", "create_timer",
12304 "GOMP_parallel_start",
12305 "GOMP_parallel_loop_static",
12306 "GOMP_parallel_loop_static_start",
12307 "GOMP_parallel_loop_dynamic",
12308 "GOMP_parallel_loop_dynamic_start",
12309 "GOMP_parallel_loop_guided",
12310 "GOMP_parallel_loop_guided_start",
12311 "GOMP_parallel_loop_runtime",
12312 "GOMP_parallel_loop_runtime_start",
12313 "GOMP_parallel_sections",
12314 "GOMP_parallel_sections_start",
12320 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12322 struct elf_link_hash_entry
*h
;
12323 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12324 FALSE
, FALSE
, TRUE
);
12325 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12326 if (htab
->params
->plt_thread_safe
)
12330 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12331 if (htab
->params
->group_size
< 0)
12332 stub_group_size
= -htab
->params
->group_size
;
12334 stub_group_size
= htab
->params
->group_size
;
12336 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12339 #define STUB_SHRINK_ITER 20
12340 /* Loop until no stubs added. After iteration 20 of this loop we may
12341 exit on a stub section shrinking. This is to break out of a
12342 pathological case where adding stubs on one iteration decreases
12343 section gaps (perhaps due to alignment), which then requires
12344 fewer or smaller stubs on the next iteration. */
12349 unsigned int bfd_indx
;
12350 struct map_stub
*group
;
12352 htab
->stub_iteration
+= 1;
12354 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12356 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12358 Elf_Internal_Shdr
*symtab_hdr
;
12360 Elf_Internal_Sym
*local_syms
= NULL
;
12362 if (!is_ppc64_elf (input_bfd
))
12365 /* We'll need the symbol table in a second. */
12366 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12367 if (symtab_hdr
->sh_info
== 0)
12370 /* Walk over each section attached to the input bfd. */
12371 for (section
= input_bfd
->sections
;
12373 section
= section
->next
)
12375 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12377 /* If there aren't any relocs, then there's nothing more
12379 if ((section
->flags
& SEC_RELOC
) == 0
12380 || (section
->flags
& SEC_ALLOC
) == 0
12381 || (section
->flags
& SEC_LOAD
) == 0
12382 || (section
->flags
& SEC_CODE
) == 0
12383 || section
->reloc_count
== 0)
12386 /* If this section is a link-once section that will be
12387 discarded, then don't create any stubs. */
12388 if (section
->output_section
== NULL
12389 || section
->output_section
->owner
!= info
->output_bfd
)
12392 /* Get the relocs. */
12394 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12395 info
->keep_memory
);
12396 if (internal_relocs
== NULL
)
12397 goto error_ret_free_local
;
12399 /* Now examine each relocation. */
12400 irela
= internal_relocs
;
12401 irelaend
= irela
+ section
->reloc_count
;
12402 for (; irela
< irelaend
; irela
++)
12404 enum elf_ppc64_reloc_type r_type
;
12405 unsigned int r_indx
;
12406 enum ppc_stub_type stub_type
;
12407 struct ppc_stub_hash_entry
*stub_entry
;
12408 asection
*sym_sec
, *code_sec
;
12409 bfd_vma sym_value
, code_value
;
12410 bfd_vma destination
;
12411 unsigned long local_off
;
12412 bfd_boolean ok_dest
;
12413 struct ppc_link_hash_entry
*hash
;
12414 struct ppc_link_hash_entry
*fdh
;
12415 struct elf_link_hash_entry
*h
;
12416 Elf_Internal_Sym
*sym
;
12418 const asection
*id_sec
;
12419 struct _opd_sec_data
*opd
;
12420 struct plt_entry
*plt_ent
;
12422 r_type
= ELF64_R_TYPE (irela
->r_info
);
12423 r_indx
= ELF64_R_SYM (irela
->r_info
);
12425 if (r_type
>= R_PPC64_max
)
12427 bfd_set_error (bfd_error_bad_value
);
12428 goto error_ret_free_internal
;
12431 /* Only look for stubs on branch instructions. */
12432 if (r_type
!= R_PPC64_REL24
12433 && r_type
!= R_PPC64_REL14
12434 && r_type
!= R_PPC64_REL14_BRTAKEN
12435 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12438 /* Now determine the call target, its name, value,
12440 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12441 r_indx
, input_bfd
))
12442 goto error_ret_free_internal
;
12443 hash
= (struct ppc_link_hash_entry
*) h
;
12450 sym_value
= sym
->st_value
;
12451 if (sym_sec
!= NULL
12452 && sym_sec
->output_section
!= NULL
)
12455 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12456 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12458 sym_value
= hash
->elf
.root
.u
.def
.value
;
12459 if (sym_sec
->output_section
!= NULL
)
12462 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12463 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12465 /* Recognise an old ABI func code entry sym, and
12466 use the func descriptor sym instead if it is
12468 if (hash
->elf
.root
.root
.string
[0] == '.'
12469 && hash
->oh
!= NULL
)
12471 fdh
= ppc_follow_link (hash
->oh
);
12472 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12473 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12475 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12476 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12477 if (sym_sec
->output_section
!= NULL
)
12486 bfd_set_error (bfd_error_bad_value
);
12487 goto error_ret_free_internal
;
12494 sym_value
+= irela
->r_addend
;
12495 destination
= (sym_value
12496 + sym_sec
->output_offset
12497 + sym_sec
->output_section
->vma
);
12498 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12503 code_sec
= sym_sec
;
12504 code_value
= sym_value
;
12505 opd
= get_opd_info (sym_sec
);
12510 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12512 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12515 code_value
+= adjust
;
12516 sym_value
+= adjust
;
12518 dest
= opd_entry_value (sym_sec
, sym_value
,
12519 &code_sec
, &code_value
, FALSE
);
12520 if (dest
!= (bfd_vma
) -1)
12522 destination
= dest
;
12525 /* Fixup old ABI sym to point at code
12527 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12528 hash
->elf
.root
.u
.def
.section
= code_sec
;
12529 hash
->elf
.root
.u
.def
.value
= code_value
;
12534 /* Determine what (if any) linker stub is needed. */
12536 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12537 &plt_ent
, destination
,
12540 if (stub_type
!= ppc_stub_plt_call
)
12542 /* Check whether we need a TOC adjusting stub.
12543 Since the linker pastes together pieces from
12544 different object files when creating the
12545 _init and _fini functions, it may be that a
12546 call to what looks like a local sym is in
12547 fact a call needing a TOC adjustment. */
12548 if (code_sec
!= NULL
12549 && code_sec
->output_section
!= NULL
12550 && (htab
->sec_info
[code_sec
->id
].toc_off
12551 != htab
->sec_info
[section
->id
].toc_off
)
12552 && (code_sec
->has_toc_reloc
12553 || code_sec
->makes_toc_func_call
))
12554 stub_type
= ppc_stub_long_branch_r2off
;
12557 if (stub_type
== ppc_stub_none
)
12560 /* __tls_get_addr calls might be eliminated. */
12561 if (stub_type
!= ppc_stub_plt_call
12563 && (hash
== htab
->tls_get_addr
12564 || hash
== htab
->tls_get_addr_fd
)
12565 && section
->has_tls_reloc
12566 && irela
!= internal_relocs
)
12568 /* Get tls info. */
12569 unsigned char *tls_mask
;
12571 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12572 irela
- 1, input_bfd
))
12573 goto error_ret_free_internal
;
12574 if (*tls_mask
!= 0)
12578 if (stub_type
== ppc_stub_plt_call
)
12581 && htab
->params
->plt_localentry0
!= 0
12582 && is_elfv2_localentry0 (&hash
->elf
))
12583 htab
->has_plt_localentry0
= 1;
12584 else if (irela
+ 1 < irelaend
12585 && irela
[1].r_offset
== irela
->r_offset
+ 4
12586 && (ELF64_R_TYPE (irela
[1].r_info
)
12587 == R_PPC64_TOCSAVE
))
12589 if (!tocsave_find (htab
, INSERT
,
12590 &local_syms
, irela
+ 1, input_bfd
))
12591 goto error_ret_free_internal
;
12594 stub_type
= ppc_stub_plt_call_r2save
;
12597 /* Support for grouping stub sections. */
12598 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12600 /* Get the name of this stub. */
12601 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12603 goto error_ret_free_internal
;
12605 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12606 stub_name
, FALSE
, FALSE
);
12607 if (stub_entry
!= NULL
)
12609 /* The proper stub has already been created. */
12611 if (stub_type
== ppc_stub_plt_call_r2save
)
12612 stub_entry
->stub_type
= stub_type
;
12616 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12617 if (stub_entry
== NULL
)
12620 error_ret_free_internal
:
12621 if (elf_section_data (section
)->relocs
== NULL
)
12622 free (internal_relocs
);
12623 error_ret_free_local
:
12624 if (local_syms
!= NULL
12625 && (symtab_hdr
->contents
12626 != (unsigned char *) local_syms
))
12631 stub_entry
->stub_type
= stub_type
;
12632 if (stub_type
!= ppc_stub_plt_call
12633 && stub_type
!= ppc_stub_plt_call_r2save
)
12635 stub_entry
->target_value
= code_value
;
12636 stub_entry
->target_section
= code_sec
;
12640 stub_entry
->target_value
= sym_value
;
12641 stub_entry
->target_section
= sym_sec
;
12643 stub_entry
->h
= hash
;
12644 stub_entry
->plt_ent
= plt_ent
;
12645 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12647 if (stub_entry
->h
!= NULL
)
12648 htab
->stub_globals
+= 1;
12651 /* We're done with the internal relocs, free them. */
12652 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12653 free (internal_relocs
);
12656 if (local_syms
!= NULL
12657 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12659 if (!info
->keep_memory
)
12662 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12666 /* We may have added some stubs. Find out the new size of the
12668 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12669 if (group
->stub_sec
!= NULL
)
12671 asection
*stub_sec
= group
->stub_sec
;
12673 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12674 || stub_sec
->rawsize
< stub_sec
->size
)
12675 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12676 stub_sec
->rawsize
= stub_sec
->size
;
12677 stub_sec
->size
= 0;
12678 stub_sec
->reloc_count
= 0;
12679 stub_sec
->flags
&= ~SEC_RELOC
;
12682 htab
->brlt
->size
= 0;
12683 htab
->brlt
->reloc_count
= 0;
12684 htab
->brlt
->flags
&= ~SEC_RELOC
;
12685 if (htab
->relbrlt
!= NULL
)
12686 htab
->relbrlt
->size
= 0;
12688 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12690 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12691 if (group
->needs_save_res
)
12692 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12694 if (info
->emitrelocations
12695 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12697 htab
->glink
->reloc_count
= 1;
12698 htab
->glink
->flags
|= SEC_RELOC
;
12701 if (htab
->glink_eh_frame
!= NULL
12702 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12703 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12705 size_t size
= 0, align
= 4;
12707 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12708 if (group
->stub_sec
!= NULL
)
12709 size
+= stub_eh_frame_size (group
, align
);
12710 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12711 size
+= (24 + align
- 1) & -align
;
12713 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12714 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12715 size
= (size
+ align
- 1) & -align
;
12716 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12717 htab
->glink_eh_frame
->size
= size
;
12720 if (htab
->params
->plt_stub_align
!= 0)
12721 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12722 if (group
->stub_sec
!= NULL
)
12723 group
->stub_sec
->size
= ((group
->stub_sec
->size
12724 + (1 << htab
->params
->plt_stub_align
) - 1)
12725 & -(1 << htab
->params
->plt_stub_align
));
12727 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12728 if (group
->stub_sec
!= NULL
12729 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12730 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12731 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12735 && (htab
->glink_eh_frame
== NULL
12736 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12739 /* Ask the linker to do its stuff. */
12740 (*htab
->params
->layout_sections_again
) ();
12743 if (htab
->glink_eh_frame
!= NULL
12744 && htab
->glink_eh_frame
->size
!= 0)
12747 bfd_byte
*p
, *last_fde
;
12748 size_t last_fde_len
, size
, align
, pad
;
12749 struct map_stub
*group
;
12751 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12754 htab
->glink_eh_frame
->contents
= p
;
12758 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12759 /* CIE length (rewrite in case little-endian). */
12760 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12761 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12762 p
+= last_fde_len
+ 4;
12764 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12765 if (group
->stub_sec
!= NULL
)
12768 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12770 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12773 val
= p
- htab
->glink_eh_frame
->contents
;
12774 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12776 /* Offset to stub section, written later. */
12778 /* stub section size. */
12779 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12781 /* Augmentation. */
12783 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12785 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12787 /* This FDE needs more than just the default.
12788 Describe __tls_get_addr_opt stub LR. */
12790 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12791 else if (to_bctrl
< 256)
12793 *p
++ = DW_CFA_advance_loc1
;
12796 else if (to_bctrl
< 65536)
12798 *p
++ = DW_CFA_advance_loc2
;
12799 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12804 *p
++ = DW_CFA_advance_loc4
;
12805 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12808 *p
++ = DW_CFA_offset_extended_sf
;
12810 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12811 *p
++ = DW_CFA_advance_loc
+ 4;
12812 *p
++ = DW_CFA_restore_extended
;
12816 p
= last_fde
+ last_fde_len
+ 4;
12818 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12821 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12823 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12826 val
= p
- htab
->glink_eh_frame
->contents
;
12827 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12829 /* Offset to .glink, written later. */
12832 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12834 /* Augmentation. */
12837 *p
++ = DW_CFA_advance_loc
+ 1;
12838 *p
++ = DW_CFA_register
;
12840 *p
++ = htab
->opd_abi
? 12 : 0;
12841 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12842 *p
++ = DW_CFA_restore_extended
;
12844 p
+= ((24 + align
- 1) & -align
) - 24;
12846 /* Subsume any padding into the last FDE if user .eh_frame
12847 sections are aligned more than glink_eh_frame. Otherwise any
12848 zero padding will be seen as a terminator. */
12849 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12850 size
= p
- htab
->glink_eh_frame
->contents
;
12851 pad
= ((size
+ align
- 1) & -align
) - size
;
12852 htab
->glink_eh_frame
->size
= size
+ pad
;
12853 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12856 maybe_strip_output (info
, htab
->brlt
);
12857 if (htab
->glink_eh_frame
!= NULL
)
12858 maybe_strip_output (info
, htab
->glink_eh_frame
);
12863 /* Called after we have determined section placement. If sections
12864 move, we'll be called again. Provide a value for TOCstart. */
12867 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12870 bfd_vma TOCstart
, adjust
;
12874 struct elf_link_hash_entry
*h
;
12875 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12877 if (is_elf_hash_table (htab
)
12878 && htab
->hgot
!= NULL
)
12882 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12883 if (is_elf_hash_table (htab
))
12887 && h
->root
.type
== bfd_link_hash_defined
12888 && !h
->root
.linker_def
12889 && (!is_elf_hash_table (htab
)
12890 || h
->def_regular
))
12892 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12893 + h
->root
.u
.def
.section
->output_offset
12894 + h
->root
.u
.def
.section
->output_section
->vma
);
12895 _bfd_set_gp_value (obfd
, TOCstart
);
12900 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12901 order. The TOC starts where the first of these sections starts. */
12902 s
= bfd_get_section_by_name (obfd
, ".got");
12903 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12904 s
= bfd_get_section_by_name (obfd
, ".toc");
12905 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12906 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12907 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12908 s
= bfd_get_section_by_name (obfd
, ".plt");
12909 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12911 /* This may happen for
12912 o references to TOC base (SYM@toc / TOC[tc0]) without a
12914 o bad linker script
12915 o --gc-sections and empty TOC sections
12917 FIXME: Warn user? */
12919 /* Look for a likely section. We probably won't even be
12921 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12922 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12924 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12927 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12928 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12929 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12932 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12933 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12937 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12938 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12944 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12946 /* Force alignment. */
12947 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12948 TOCstart
-= adjust
;
12949 _bfd_set_gp_value (obfd
, TOCstart
);
12951 if (info
!= NULL
&& s
!= NULL
)
12953 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12957 if (htab
->elf
.hgot
!= NULL
)
12959 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12960 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12965 struct bfd_link_hash_entry
*bh
= NULL
;
12966 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12967 s
, TOC_BASE_OFF
- adjust
,
12968 NULL
, FALSE
, FALSE
, &bh
);
12974 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12975 write out any global entry stubs. */
12978 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12980 struct bfd_link_info
*info
;
12981 struct ppc_link_hash_table
*htab
;
12982 struct plt_entry
*pent
;
12985 if (h
->root
.type
== bfd_link_hash_indirect
)
12988 if (!h
->pointer_equality_needed
)
12991 if (h
->def_regular
)
12995 htab
= ppc_hash_table (info
);
13000 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13001 if (pent
->plt
.offset
!= (bfd_vma
) -1
13002 && pent
->addend
== 0)
13008 p
= s
->contents
+ h
->root
.u
.def
.value
;
13009 plt
= htab
->elf
.splt
;
13010 if (!htab
->elf
.dynamic_sections_created
13011 || h
->dynindx
== -1)
13012 plt
= htab
->elf
.iplt
;
13013 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13014 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13016 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13018 info
->callbacks
->einfo
13019 (_("%P: linkage table error against `%T'\n"),
13020 h
->root
.root
.string
);
13021 bfd_set_error (bfd_error_bad_value
);
13022 htab
->stub_error
= TRUE
;
13025 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13026 if (htab
->params
->emit_stub_syms
)
13028 size_t len
= strlen (h
->root
.root
.string
);
13029 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13034 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13035 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13038 if (h
->root
.type
== bfd_link_hash_new
)
13040 h
->root
.type
= bfd_link_hash_defined
;
13041 h
->root
.u
.def
.section
= s
;
13042 h
->root
.u
.def
.value
= p
- s
->contents
;
13043 h
->ref_regular
= 1;
13044 h
->def_regular
= 1;
13045 h
->ref_regular_nonweak
= 1;
13046 h
->forced_local
= 1;
13048 h
->root
.linker_def
= 1;
13052 if (PPC_HA (off
) != 0)
13054 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13057 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13059 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13061 bfd_put_32 (s
->owner
, BCTR
, p
);
13067 /* Build all the stubs associated with the current output file.
13068 The stubs are kept in a hash table attached to the main linker
13069 hash table. This function is called via gldelf64ppc_finish. */
13072 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13075 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13076 struct map_stub
*group
;
13077 asection
*stub_sec
;
13079 int stub_sec_count
= 0;
13084 /* Allocate memory to hold the linker stubs. */
13085 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13086 if ((stub_sec
= group
->stub_sec
) != NULL
13087 && stub_sec
->size
!= 0)
13089 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13090 if (stub_sec
->contents
== NULL
)
13092 stub_sec
->size
= 0;
13095 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13100 /* Build the .glink plt call stub. */
13101 if (htab
->params
->emit_stub_syms
)
13103 struct elf_link_hash_entry
*h
;
13104 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13105 TRUE
, FALSE
, FALSE
);
13108 if (h
->root
.type
== bfd_link_hash_new
)
13110 h
->root
.type
= bfd_link_hash_defined
;
13111 h
->root
.u
.def
.section
= htab
->glink
;
13112 h
->root
.u
.def
.value
= 8;
13113 h
->ref_regular
= 1;
13114 h
->def_regular
= 1;
13115 h
->ref_regular_nonweak
= 1;
13116 h
->forced_local
= 1;
13118 h
->root
.linker_def
= 1;
13121 plt0
= (htab
->elf
.splt
->output_section
->vma
13122 + htab
->elf
.splt
->output_offset
13124 if (info
->emitrelocations
)
13126 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13129 r
->r_offset
= (htab
->glink
->output_offset
13130 + htab
->glink
->output_section
->vma
);
13131 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13132 r
->r_addend
= plt0
;
13134 p
= htab
->glink
->contents
;
13135 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13136 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13140 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13142 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13144 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13146 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13148 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13150 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13152 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13154 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13156 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13158 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13163 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13165 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13167 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13169 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13171 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13173 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13175 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13177 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13179 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13181 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13183 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13185 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13187 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13190 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13192 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13194 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13198 /* Build the .glink lazy link call stubs. */
13200 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13206 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13211 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13213 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13218 bfd_put_32 (htab
->glink
->owner
,
13219 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13224 /* Build .glink global entry stubs. */
13225 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13226 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13229 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13231 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13233 if (htab
->brlt
->contents
== NULL
)
13236 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13238 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13239 htab
->relbrlt
->size
);
13240 if (htab
->relbrlt
->contents
== NULL
)
13244 /* Build the stubs as directed by the stub hash table. */
13245 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13247 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13248 if (group
->needs_save_res
)
13250 stub_sec
= group
->stub_sec
;
13251 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13253 if (htab
->params
->emit_stub_syms
)
13257 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13258 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13261 stub_sec
->size
+= htab
->sfpr
->size
;
13264 if (htab
->relbrlt
!= NULL
)
13265 htab
->relbrlt
->reloc_count
= 0;
13267 if (htab
->params
->plt_stub_align
!= 0)
13268 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13269 if ((stub_sec
= group
->stub_sec
) != NULL
)
13270 stub_sec
->size
= ((stub_sec
->size
13271 + (1 << htab
->params
->plt_stub_align
) - 1)
13272 & -(1 << htab
->params
->plt_stub_align
));
13274 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13275 if ((stub_sec
= group
->stub_sec
) != NULL
)
13277 stub_sec_count
+= 1;
13278 if (stub_sec
->rawsize
!= stub_sec
->size
13279 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13280 || stub_sec
->rawsize
< stub_sec
->size
))
13286 htab
->stub_error
= TRUE
;
13287 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13290 if (htab
->stub_error
)
13296 *stats
= bfd_malloc (500);
13297 if (*stats
== NULL
)
13300 len
= sprintf (*stats
,
13301 ngettext ("linker stubs in %u group\n",
13302 "linker stubs in %u groups\n",
13305 sprintf (*stats
+ len
, _(" branch %lu\n"
13306 " toc adjust %lu\n"
13307 " long branch %lu\n"
13308 " long toc adj %lu\n"
13310 " plt call toc %lu\n"
13311 " global entry %lu"),
13312 htab
->stub_count
[ppc_stub_long_branch
- 1],
13313 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13314 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13315 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13316 htab
->stub_count
[ppc_stub_plt_call
- 1],
13317 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13318 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13323 /* What to do when ld finds relocations against symbols defined in
13324 discarded sections. */
13326 static unsigned int
13327 ppc64_elf_action_discarded (asection
*sec
)
13329 if (strcmp (".opd", sec
->name
) == 0)
13332 if (strcmp (".toc", sec
->name
) == 0)
13335 if (strcmp (".toc1", sec
->name
) == 0)
13338 return _bfd_elf_default_action_discarded (sec
);
13341 /* The RELOCATE_SECTION function is called by the ELF backend linker
13342 to handle the relocations for a section.
13344 The relocs are always passed as Rela structures; if the section
13345 actually uses Rel structures, the r_addend field will always be
13348 This function is responsible for adjust the section contents as
13349 necessary, and (if using Rela relocs and generating a
13350 relocatable output file) adjusting the reloc addend as
13353 This function does not have to worry about setting the reloc
13354 address or the reloc symbol index.
13356 LOCAL_SYMS is a pointer to the swapped in local symbols.
13358 LOCAL_SECTIONS is an array giving the section in the input file
13359 corresponding to the st_shndx field of each local symbol.
13361 The global hash table entry for the global symbols can be found
13362 via elf_sym_hashes (input_bfd).
13364 When generating relocatable output, this function must handle
13365 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13366 going to be the section symbol corresponding to the output
13367 section, which means that the addend must be adjusted
13371 ppc64_elf_relocate_section (bfd
*output_bfd
,
13372 struct bfd_link_info
*info
,
13374 asection
*input_section
,
13375 bfd_byte
*contents
,
13376 Elf_Internal_Rela
*relocs
,
13377 Elf_Internal_Sym
*local_syms
,
13378 asection
**local_sections
)
13380 struct ppc_link_hash_table
*htab
;
13381 Elf_Internal_Shdr
*symtab_hdr
;
13382 struct elf_link_hash_entry
**sym_hashes
;
13383 Elf_Internal_Rela
*rel
;
13384 Elf_Internal_Rela
*wrel
;
13385 Elf_Internal_Rela
*relend
;
13386 Elf_Internal_Rela outrel
;
13388 struct got_entry
**local_got_ents
;
13390 bfd_boolean ret
= TRUE
;
13391 bfd_boolean is_opd
;
13392 /* Assume 'at' branch hints. */
13393 bfd_boolean is_isa_v2
= TRUE
;
13394 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13396 /* Initialize howto table if needed. */
13397 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13400 htab
= ppc_hash_table (info
);
13404 /* Don't relocate stub sections. */
13405 if (input_section
->owner
== htab
->params
->stub_bfd
)
13408 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13410 local_got_ents
= elf_local_got_ents (input_bfd
);
13411 TOCstart
= elf_gp (output_bfd
);
13412 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13413 sym_hashes
= elf_sym_hashes (input_bfd
);
13414 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13416 rel
= wrel
= relocs
;
13417 relend
= relocs
+ input_section
->reloc_count
;
13418 for (; rel
< relend
; wrel
++, rel
++)
13420 enum elf_ppc64_reloc_type r_type
;
13422 bfd_reloc_status_type r
;
13423 Elf_Internal_Sym
*sym
;
13425 struct elf_link_hash_entry
*h_elf
;
13426 struct ppc_link_hash_entry
*h
;
13427 struct ppc_link_hash_entry
*fdh
;
13428 const char *sym_name
;
13429 unsigned long r_symndx
, toc_symndx
;
13430 bfd_vma toc_addend
;
13431 unsigned char tls_mask
, tls_gd
, tls_type
;
13432 unsigned char sym_type
;
13433 bfd_vma relocation
;
13434 bfd_boolean unresolved_reloc
;
13435 bfd_boolean warned
;
13436 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13439 struct ppc_stub_hash_entry
*stub_entry
;
13440 bfd_vma max_br_offset
;
13442 Elf_Internal_Rela orig_rel
;
13443 reloc_howto_type
*howto
;
13444 struct reloc_howto_struct alt_howto
;
13449 r_type
= ELF64_R_TYPE (rel
->r_info
);
13450 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13452 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13453 symbol of the previous ADDR64 reloc. The symbol gives us the
13454 proper TOC base to use. */
13455 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13457 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13459 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13465 unresolved_reloc
= FALSE
;
13468 if (r_symndx
< symtab_hdr
->sh_info
)
13470 /* It's a local symbol. */
13471 struct _opd_sec_data
*opd
;
13473 sym
= local_syms
+ r_symndx
;
13474 sec
= local_sections
[r_symndx
];
13475 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13476 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13477 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13478 opd
= get_opd_info (sec
);
13479 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13481 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13487 /* If this is a relocation against the opd section sym
13488 and we have edited .opd, adjust the reloc addend so
13489 that ld -r and ld --emit-relocs output is correct.
13490 If it is a reloc against some other .opd symbol,
13491 then the symbol value will be adjusted later. */
13492 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13493 rel
->r_addend
+= adjust
;
13495 relocation
+= adjust
;
13501 bfd_boolean ignored
;
13503 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13504 r_symndx
, symtab_hdr
, sym_hashes
,
13505 h_elf
, sec
, relocation
,
13506 unresolved_reloc
, warned
, ignored
);
13507 sym_name
= h_elf
->root
.root
.string
;
13508 sym_type
= h_elf
->type
;
13510 && sec
->owner
== output_bfd
13511 && strcmp (sec
->name
, ".opd") == 0)
13513 /* This is a symbol defined in a linker script. All
13514 such are defined in output sections, even those
13515 defined by simple assignment from a symbol defined in
13516 an input section. Transfer the symbol to an
13517 appropriate input .opd section, so that a branch to
13518 this symbol will be mapped to the location specified
13519 by the opd entry. */
13520 struct bfd_link_order
*lo
;
13521 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13522 if (lo
->type
== bfd_indirect_link_order
)
13524 asection
*isec
= lo
->u
.indirect
.section
;
13525 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13526 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13529 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13530 h_elf
->root
.u
.def
.section
= isec
;
13537 h
= (struct ppc_link_hash_entry
*) h_elf
;
13539 if (sec
!= NULL
&& discarded_section (sec
))
13541 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13542 input_bfd
, input_section
,
13543 contents
+ rel
->r_offset
);
13544 wrel
->r_offset
= rel
->r_offset
;
13546 wrel
->r_addend
= 0;
13548 /* For ld -r, remove relocations in debug sections against
13549 symbols defined in discarded sections. Not done for
13550 non-debug to preserve relocs in .eh_frame which the
13551 eh_frame editing code expects to be present. */
13552 if (bfd_link_relocatable (info
)
13553 && (input_section
->flags
& SEC_DEBUGGING
))
13559 if (bfd_link_relocatable (info
))
13562 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13564 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13565 sec
= bfd_abs_section_ptr
;
13566 unresolved_reloc
= FALSE
;
13569 /* TLS optimizations. Replace instruction sequences and relocs
13570 based on information we collected in tls_optimize. We edit
13571 RELOCS so that --emit-relocs will output something sensible
13572 for the final instruction stream. */
13577 tls_mask
= h
->tls_mask
;
13578 else if (local_got_ents
!= NULL
)
13580 struct plt_entry
**local_plt
= (struct plt_entry
**)
13581 (local_got_ents
+ symtab_hdr
->sh_info
);
13582 unsigned char *lgot_masks
= (unsigned char *)
13583 (local_plt
+ symtab_hdr
->sh_info
);
13584 tls_mask
= lgot_masks
[r_symndx
];
13587 && (r_type
== R_PPC64_TLS
13588 || r_type
== R_PPC64_TLSGD
13589 || r_type
== R_PPC64_TLSLD
))
13591 /* Check for toc tls entries. */
13592 unsigned char *toc_tls
;
13594 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13595 &local_syms
, rel
, input_bfd
))
13599 tls_mask
= *toc_tls
;
13602 /* Check that tls relocs are used with tls syms, and non-tls
13603 relocs are used with non-tls syms. */
13604 if (r_symndx
!= STN_UNDEF
13605 && r_type
!= R_PPC64_NONE
13607 || h
->elf
.root
.type
== bfd_link_hash_defined
13608 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13609 && (IS_PPC64_TLS_RELOC (r_type
)
13610 != (sym_type
== STT_TLS
13611 || (sym_type
== STT_SECTION
13612 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13615 && (r_type
== R_PPC64_TLS
13616 || r_type
== R_PPC64_TLSGD
13617 || r_type
== R_PPC64_TLSLD
))
13618 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13621 info
->callbacks
->einfo
13622 (!IS_PPC64_TLS_RELOC (r_type
)
13623 /* xgettext:c-format */
13624 ? _("%H: %s used with TLS symbol `%T'\n")
13625 /* xgettext:c-format */
13626 : _("%H: %s used with non-TLS symbol `%T'\n"),
13627 input_bfd
, input_section
, rel
->r_offset
,
13628 ppc64_elf_howto_table
[r_type
]->name
,
13632 /* Ensure reloc mapping code below stays sane. */
13633 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13634 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13635 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13636 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13637 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13638 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13639 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13640 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13641 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13642 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13650 case R_PPC64_LO_DS_OPT
:
13651 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13652 if ((insn
& (0x3f << 26)) != 58u << 26)
13654 insn
+= (14u << 26) - (58u << 26);
13655 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13656 r_type
= R_PPC64_TOC16_LO
;
13657 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13660 case R_PPC64_TOC16
:
13661 case R_PPC64_TOC16_LO
:
13662 case R_PPC64_TOC16_DS
:
13663 case R_PPC64_TOC16_LO_DS
:
13665 /* Check for toc tls entries. */
13666 unsigned char *toc_tls
;
13669 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13670 &local_syms
, rel
, input_bfd
);
13676 tls_mask
= *toc_tls
;
13677 if (r_type
== R_PPC64_TOC16_DS
13678 || r_type
== R_PPC64_TOC16_LO_DS
)
13681 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13686 /* If we found a GD reloc pair, then we might be
13687 doing a GD->IE transition. */
13690 tls_gd
= TLS_TPRELGD
;
13691 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13694 else if (retval
== 3)
13696 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13704 case R_PPC64_GOT_TPREL16_HI
:
13705 case R_PPC64_GOT_TPREL16_HA
:
13707 && (tls_mask
& TLS_TPREL
) == 0)
13709 rel
->r_offset
-= d_offset
;
13710 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13711 r_type
= R_PPC64_NONE
;
13712 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13716 case R_PPC64_GOT_TPREL16_DS
:
13717 case R_PPC64_GOT_TPREL16_LO_DS
:
13719 && (tls_mask
& TLS_TPREL
) == 0)
13722 insn
= bfd_get_32 (input_bfd
,
13723 contents
+ rel
->r_offset
- d_offset
);
13725 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13726 bfd_put_32 (input_bfd
, insn
,
13727 contents
+ rel
->r_offset
- d_offset
);
13728 r_type
= R_PPC64_TPREL16_HA
;
13729 if (toc_symndx
!= 0)
13731 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13732 rel
->r_addend
= toc_addend
;
13733 /* We changed the symbol. Start over in order to
13734 get h, sym, sec etc. right. */
13738 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13744 && (tls_mask
& TLS_TPREL
) == 0)
13746 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13747 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13750 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13751 /* Was PPC64_TLS which sits on insn boundary, now
13752 PPC64_TPREL16_LO which is at low-order half-word. */
13753 rel
->r_offset
+= d_offset
;
13754 r_type
= R_PPC64_TPREL16_LO
;
13755 if (toc_symndx
!= 0)
13757 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13758 rel
->r_addend
= toc_addend
;
13759 /* We changed the symbol. Start over in order to
13760 get h, sym, sec etc. right. */
13764 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13768 case R_PPC64_GOT_TLSGD16_HI
:
13769 case R_PPC64_GOT_TLSGD16_HA
:
13770 tls_gd
= TLS_TPRELGD
;
13771 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13775 case R_PPC64_GOT_TLSLD16_HI
:
13776 case R_PPC64_GOT_TLSLD16_HA
:
13777 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13780 if ((tls_mask
& tls_gd
) != 0)
13781 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13782 + R_PPC64_GOT_TPREL16_DS
);
13785 rel
->r_offset
-= d_offset
;
13786 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13787 r_type
= R_PPC64_NONE
;
13789 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13793 case R_PPC64_GOT_TLSGD16
:
13794 case R_PPC64_GOT_TLSGD16_LO
:
13795 tls_gd
= TLS_TPRELGD
;
13796 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13800 case R_PPC64_GOT_TLSLD16
:
13801 case R_PPC64_GOT_TLSLD16_LO
:
13802 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13804 unsigned int insn1
, insn2
;
13808 offset
= (bfd_vma
) -1;
13809 /* If not using the newer R_PPC64_TLSGD/LD to mark
13810 __tls_get_addr calls, we must trust that the call
13811 stays with its arg setup insns, ie. that the next
13812 reloc is the __tls_get_addr call associated with
13813 the current reloc. Edit both insns. */
13814 if (input_section
->has_tls_get_addr_call
13815 && rel
+ 1 < relend
13816 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13817 htab
->tls_get_addr
,
13818 htab
->tls_get_addr_fd
))
13819 offset
= rel
[1].r_offset
;
13820 /* We read the low GOT_TLS (or TOC16) insn because we
13821 need to keep the destination reg. It may be
13822 something other than the usual r3, and moved to r3
13823 before the call by intervening code. */
13824 insn1
= bfd_get_32 (input_bfd
,
13825 contents
+ rel
->r_offset
- d_offset
);
13826 if ((tls_mask
& tls_gd
) != 0)
13829 insn1
&= (0x1f << 21) | (0x1f << 16);
13830 insn1
|= 58 << 26; /* ld */
13831 insn2
= 0x7c636a14; /* add 3,3,13 */
13832 if (offset
!= (bfd_vma
) -1)
13833 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13834 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13835 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13836 + R_PPC64_GOT_TPREL16_DS
);
13838 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13839 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13844 insn1
&= 0x1f << 21;
13845 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13846 insn2
= 0x38630000; /* addi 3,3,0 */
13849 /* Was an LD reloc. */
13851 sec
= local_sections
[toc_symndx
];
13853 r_symndx
< symtab_hdr
->sh_info
;
13855 if (local_sections
[r_symndx
] == sec
)
13857 if (r_symndx
>= symtab_hdr
->sh_info
)
13858 r_symndx
= STN_UNDEF
;
13859 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13860 if (r_symndx
!= STN_UNDEF
)
13861 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13862 + sec
->output_offset
13863 + sec
->output_section
->vma
);
13865 else if (toc_symndx
!= 0)
13867 r_symndx
= toc_symndx
;
13868 rel
->r_addend
= toc_addend
;
13870 r_type
= R_PPC64_TPREL16_HA
;
13871 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13872 if (offset
!= (bfd_vma
) -1)
13874 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13875 R_PPC64_TPREL16_LO
);
13876 rel
[1].r_offset
= offset
+ d_offset
;
13877 rel
[1].r_addend
= rel
->r_addend
;
13880 bfd_put_32 (input_bfd
, insn1
,
13881 contents
+ rel
->r_offset
- d_offset
);
13882 if (offset
!= (bfd_vma
) -1)
13883 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13884 if ((tls_mask
& tls_gd
) == 0
13885 && (tls_gd
== 0 || toc_symndx
!= 0))
13887 /* We changed the symbol. Start over in order
13888 to get h, sym, sec etc. right. */
13894 case R_PPC64_TLSGD
:
13895 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13897 unsigned int insn2
;
13898 bfd_vma offset
= rel
->r_offset
;
13900 if ((tls_mask
& TLS_TPRELGD
) != 0)
13903 r_type
= R_PPC64_NONE
;
13904 insn2
= 0x7c636a14; /* add 3,3,13 */
13909 if (toc_symndx
!= 0)
13911 r_symndx
= toc_symndx
;
13912 rel
->r_addend
= toc_addend
;
13914 r_type
= R_PPC64_TPREL16_LO
;
13915 rel
->r_offset
= offset
+ d_offset
;
13916 insn2
= 0x38630000; /* addi 3,3,0 */
13918 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13919 /* Zap the reloc on the _tls_get_addr call too. */
13920 BFD_ASSERT (offset
== rel
[1].r_offset
);
13921 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13922 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13923 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13928 case R_PPC64_TLSLD
:
13929 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13931 unsigned int insn2
;
13932 bfd_vma offset
= rel
->r_offset
;
13935 sec
= local_sections
[toc_symndx
];
13937 r_symndx
< symtab_hdr
->sh_info
;
13939 if (local_sections
[r_symndx
] == sec
)
13941 if (r_symndx
>= symtab_hdr
->sh_info
)
13942 r_symndx
= STN_UNDEF
;
13943 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13944 if (r_symndx
!= STN_UNDEF
)
13945 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13946 + sec
->output_offset
13947 + sec
->output_section
->vma
);
13949 r_type
= R_PPC64_TPREL16_LO
;
13950 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13951 rel
->r_offset
= offset
+ d_offset
;
13952 /* Zap the reloc on the _tls_get_addr call too. */
13953 BFD_ASSERT (offset
== rel
[1].r_offset
);
13954 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13955 insn2
= 0x38630000; /* addi 3,3,0 */
13956 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13961 case R_PPC64_DTPMOD64
:
13962 if (rel
+ 1 < relend
13963 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13964 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13966 if ((tls_mask
& TLS_GD
) == 0)
13968 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13969 if ((tls_mask
& TLS_TPRELGD
) != 0)
13970 r_type
= R_PPC64_TPREL64
;
13973 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13974 r_type
= R_PPC64_NONE
;
13976 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13981 if ((tls_mask
& TLS_LD
) == 0)
13983 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13984 r_type
= R_PPC64_NONE
;
13985 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13990 case R_PPC64_TPREL64
:
13991 if ((tls_mask
& TLS_TPREL
) == 0)
13993 r_type
= R_PPC64_NONE
;
13994 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13998 case R_PPC64_ENTRY
:
13999 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14000 if (!bfd_link_pic (info
)
14001 && !info
->traditional_format
14002 && relocation
+ 0x80008000 <= 0xffffffff)
14004 unsigned int insn1
, insn2
;
14006 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14007 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14008 if ((insn1
& ~0xfffc) == LD_R2_0R12
14009 && insn2
== ADD_R2_R2_R12
)
14011 bfd_put_32 (input_bfd
,
14012 LIS_R2
+ PPC_HA (relocation
),
14013 contents
+ rel
->r_offset
);
14014 bfd_put_32 (input_bfd
,
14015 ADDI_R2_R2
+ PPC_LO (relocation
),
14016 contents
+ rel
->r_offset
+ 4);
14021 relocation
-= (rel
->r_offset
14022 + input_section
->output_offset
14023 + input_section
->output_section
->vma
);
14024 if (relocation
+ 0x80008000 <= 0xffffffff)
14026 unsigned int insn1
, insn2
;
14028 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14029 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14030 if ((insn1
& ~0xfffc) == LD_R2_0R12
14031 && insn2
== ADD_R2_R2_R12
)
14033 bfd_put_32 (input_bfd
,
14034 ADDIS_R2_R12
+ PPC_HA (relocation
),
14035 contents
+ rel
->r_offset
);
14036 bfd_put_32 (input_bfd
,
14037 ADDI_R2_R2
+ PPC_LO (relocation
),
14038 contents
+ rel
->r_offset
+ 4);
14044 case R_PPC64_REL16_HA
:
14045 /* If we are generating a non-PIC executable, edit
14046 . 0: addis 2,12,.TOC.-0b@ha
14047 . addi 2,2,.TOC.-0b@l
14048 used by ELFv2 global entry points to set up r2, to
14051 if .TOC. is in range. */
14052 if (!bfd_link_pic (info
)
14053 && !info
->traditional_format
14055 && rel
->r_addend
== d_offset
14056 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14057 && rel
+ 1 < relend
14058 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14059 && rel
[1].r_offset
== rel
->r_offset
+ 4
14060 && rel
[1].r_addend
== rel
->r_addend
+ 4
14061 && relocation
+ 0x80008000 <= 0xffffffff)
14063 unsigned int insn1
, insn2
;
14064 bfd_vma offset
= rel
->r_offset
- d_offset
;
14065 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14066 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14067 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14068 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14070 r_type
= R_PPC64_ADDR16_HA
;
14071 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14072 rel
->r_addend
-= d_offset
;
14073 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14074 rel
[1].r_addend
-= d_offset
+ 4;
14075 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14081 /* Handle other relocations that tweak non-addend part of insn. */
14083 max_br_offset
= 1 << 25;
14084 addend
= rel
->r_addend
;
14085 reloc_dest
= DEST_NORMAL
;
14091 case R_PPC64_TOCSAVE
:
14092 if (relocation
+ addend
== (rel
->r_offset
14093 + input_section
->output_offset
14094 + input_section
->output_section
->vma
)
14095 && tocsave_find (htab
, NO_INSERT
,
14096 &local_syms
, rel
, input_bfd
))
14098 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14100 || insn
== CROR_151515
|| insn
== CROR_313131
)
14101 bfd_put_32 (input_bfd
,
14102 STD_R2_0R1
+ STK_TOC (htab
),
14103 contents
+ rel
->r_offset
);
14107 /* Branch taken prediction relocations. */
14108 case R_PPC64_ADDR14_BRTAKEN
:
14109 case R_PPC64_REL14_BRTAKEN
:
14110 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14111 /* Fall through. */
14113 /* Branch not taken prediction relocations. */
14114 case R_PPC64_ADDR14_BRNTAKEN
:
14115 case R_PPC64_REL14_BRNTAKEN
:
14116 insn
|= bfd_get_32 (input_bfd
,
14117 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14118 /* Fall through. */
14120 case R_PPC64_REL14
:
14121 max_br_offset
= 1 << 15;
14122 /* Fall through. */
14124 case R_PPC64_REL24
:
14125 /* Calls to functions with a different TOC, such as calls to
14126 shared objects, need to alter the TOC pointer. This is
14127 done using a linkage stub. A REL24 branching to these
14128 linkage stubs needs to be followed by a nop, as the nop
14129 will be replaced with an instruction to restore the TOC
14134 && h
->oh
->is_func_descriptor
)
14135 fdh
= ppc_follow_link (h
->oh
);
14136 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14138 if (stub_entry
!= NULL
14139 && (stub_entry
->stub_type
== ppc_stub_plt_call
14140 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14141 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14142 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14144 bfd_boolean can_plt_call
= FALSE
;
14146 if (stub_entry
->stub_type
== ppc_stub_plt_call
14148 && htab
->params
->plt_localentry0
!= 0
14149 && is_elfv2_localentry0 (&h
->elf
))
14151 /* The function doesn't use or change r2. */
14152 can_plt_call
= TRUE
;
14155 /* All of these stubs may modify r2, so there must be a
14156 branch and link followed by a nop. The nop is
14157 replaced by an insn to restore r2. */
14158 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14162 br
= bfd_get_32 (input_bfd
,
14163 contents
+ rel
->r_offset
);
14168 nop
= bfd_get_32 (input_bfd
,
14169 contents
+ rel
->r_offset
+ 4);
14171 || nop
== CROR_151515
|| nop
== CROR_313131
)
14174 && (h
== htab
->tls_get_addr_fd
14175 || h
== htab
->tls_get_addr
)
14176 && htab
->params
->tls_get_addr_opt
)
14178 /* Special stub used, leave nop alone. */
14181 bfd_put_32 (input_bfd
,
14182 LD_R2_0R1
+ STK_TOC (htab
),
14183 contents
+ rel
->r_offset
+ 4);
14184 can_plt_call
= TRUE
;
14189 if (!can_plt_call
&& h
!= NULL
)
14191 const char *name
= h
->elf
.root
.root
.string
;
14196 if (strncmp (name
, "__libc_start_main", 17) == 0
14197 && (name
[17] == 0 || name
[17] == '@'))
14199 /* Allow crt1 branch to go via a toc adjusting
14200 stub. Other calls that never return could do
14201 the same, if we could detect such. */
14202 can_plt_call
= TRUE
;
14208 /* g++ as of 20130507 emits self-calls without a
14209 following nop. This is arguably wrong since we
14210 have conflicting information. On the one hand a
14211 global symbol and on the other a local call
14212 sequence, but don't error for this special case.
14213 It isn't possible to cheaply verify we have
14214 exactly such a call. Allow all calls to the same
14216 asection
*code_sec
= sec
;
14218 if (get_opd_info (sec
) != NULL
)
14220 bfd_vma off
= (relocation
+ addend
14221 - sec
->output_section
->vma
14222 - sec
->output_offset
);
14224 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14226 if (code_sec
== input_section
)
14227 can_plt_call
= TRUE
;
14232 if (stub_entry
->stub_type
== ppc_stub_plt_call
14233 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14234 info
->callbacks
->einfo
14235 /* xgettext:c-format */
14236 (_("%H: call to `%T' lacks nop, can't restore toc; "
14237 "recompile with -fPIC\n"),
14238 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14240 info
->callbacks
->einfo
14241 /* xgettext:c-format */
14242 (_("%H: call to `%T' lacks nop, can't restore toc; "
14243 "(-mcmodel=small toc adjust stub)\n"),
14244 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14246 bfd_set_error (bfd_error_bad_value
);
14251 && (stub_entry
->stub_type
== ppc_stub_plt_call
14252 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14253 unresolved_reloc
= FALSE
;
14256 if ((stub_entry
== NULL
14257 || stub_entry
->stub_type
== ppc_stub_long_branch
14258 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14259 && get_opd_info (sec
) != NULL
)
14261 /* The branch destination is the value of the opd entry. */
14262 bfd_vma off
= (relocation
+ addend
14263 - sec
->output_section
->vma
14264 - sec
->output_offset
);
14265 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14266 if (dest
!= (bfd_vma
) -1)
14270 reloc_dest
= DEST_OPD
;
14274 /* If the branch is out of reach we ought to have a long
14276 from
= (rel
->r_offset
14277 + input_section
->output_offset
14278 + input_section
->output_section
->vma
);
14280 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14284 if (stub_entry
!= NULL
14285 && (stub_entry
->stub_type
== ppc_stub_long_branch
14286 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14287 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14288 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14289 || (relocation
+ addend
- from
+ max_br_offset
14290 < 2 * max_br_offset
)))
14291 /* Don't use the stub if this branch is in range. */
14294 if (stub_entry
!= NULL
)
14296 /* Munge up the value and addend so that we call the stub
14297 rather than the procedure directly. */
14298 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14300 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14301 relocation
+= (stub_sec
->output_offset
14302 + stub_sec
->output_section
->vma
14303 + stub_sec
->size
- htab
->sfpr
->size
14304 - htab
->sfpr
->output_offset
14305 - htab
->sfpr
->output_section
->vma
);
14307 relocation
= (stub_entry
->stub_offset
14308 + stub_sec
->output_offset
14309 + stub_sec
->output_section
->vma
);
14311 reloc_dest
= DEST_STUB
;
14313 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14314 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14315 && (ALWAYS_EMIT_R2SAVE
14316 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14317 && rel
+ 1 < relend
14318 && rel
[1].r_offset
== rel
->r_offset
+ 4
14319 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14327 /* Set 'a' bit. This is 0b00010 in BO field for branch
14328 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14329 for branch on CTR insns (BO == 1a00t or 1a01t). */
14330 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14331 insn
|= 0x02 << 21;
14332 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14333 insn
|= 0x08 << 21;
14339 /* Invert 'y' bit if not the default. */
14340 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14341 insn
^= 0x01 << 21;
14344 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14347 /* NOP out calls to undefined weak functions.
14348 We can thus call a weak function without first
14349 checking whether the function is defined. */
14351 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14352 && h
->elf
.dynindx
== -1
14353 && r_type
== R_PPC64_REL24
14357 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14363 /* Set `addend'. */
14368 info
->callbacks
->einfo
14369 /* xgettext:c-format */
14370 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14371 input_bfd
, (int) r_type
, sym_name
);
14373 bfd_set_error (bfd_error_bad_value
);
14379 case R_PPC64_TLSGD
:
14380 case R_PPC64_TLSLD
:
14381 case R_PPC64_TOCSAVE
:
14382 case R_PPC64_GNU_VTINHERIT
:
14383 case R_PPC64_GNU_VTENTRY
:
14384 case R_PPC64_ENTRY
:
14387 /* GOT16 relocations. Like an ADDR16 using the symbol's
14388 address in the GOT as relocation value instead of the
14389 symbol's value itself. Also, create a GOT entry for the
14390 symbol and put the symbol value there. */
14391 case R_PPC64_GOT_TLSGD16
:
14392 case R_PPC64_GOT_TLSGD16_LO
:
14393 case R_PPC64_GOT_TLSGD16_HI
:
14394 case R_PPC64_GOT_TLSGD16_HA
:
14395 tls_type
= TLS_TLS
| TLS_GD
;
14398 case R_PPC64_GOT_TLSLD16
:
14399 case R_PPC64_GOT_TLSLD16_LO
:
14400 case R_PPC64_GOT_TLSLD16_HI
:
14401 case R_PPC64_GOT_TLSLD16_HA
:
14402 tls_type
= TLS_TLS
| TLS_LD
;
14405 case R_PPC64_GOT_TPREL16_DS
:
14406 case R_PPC64_GOT_TPREL16_LO_DS
:
14407 case R_PPC64_GOT_TPREL16_HI
:
14408 case R_PPC64_GOT_TPREL16_HA
:
14409 tls_type
= TLS_TLS
| TLS_TPREL
;
14412 case R_PPC64_GOT_DTPREL16_DS
:
14413 case R_PPC64_GOT_DTPREL16_LO_DS
:
14414 case R_PPC64_GOT_DTPREL16_HI
:
14415 case R_PPC64_GOT_DTPREL16_HA
:
14416 tls_type
= TLS_TLS
| TLS_DTPREL
;
14419 case R_PPC64_GOT16
:
14420 case R_PPC64_GOT16_LO
:
14421 case R_PPC64_GOT16_HI
:
14422 case R_PPC64_GOT16_HA
:
14423 case R_PPC64_GOT16_DS
:
14424 case R_PPC64_GOT16_LO_DS
:
14427 /* Relocation is to the entry for this symbol in the global
14432 unsigned long indx
= 0;
14433 struct got_entry
*ent
;
14435 if (tls_type
== (TLS_TLS
| TLS_LD
)
14437 || !h
->elf
.def_dynamic
))
14438 ent
= ppc64_tlsld_got (input_bfd
);
14443 if (!htab
->elf
.dynamic_sections_created
14444 || h
->elf
.dynindx
== -1
14445 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14446 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14447 /* This is actually a static link, or it is a
14448 -Bsymbolic link and the symbol is defined
14449 locally, or the symbol was forced to be local
14450 because of a version file. */
14454 indx
= h
->elf
.dynindx
;
14455 unresolved_reloc
= FALSE
;
14457 ent
= h
->elf
.got
.glist
;
14461 if (local_got_ents
== NULL
)
14463 ent
= local_got_ents
[r_symndx
];
14466 for (; ent
!= NULL
; ent
= ent
->next
)
14467 if (ent
->addend
== orig_rel
.r_addend
14468 && ent
->owner
== input_bfd
14469 && ent
->tls_type
== tls_type
)
14475 if (ent
->is_indirect
)
14476 ent
= ent
->got
.ent
;
14477 offp
= &ent
->got
.offset
;
14478 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14482 /* The offset must always be a multiple of 8. We use the
14483 least significant bit to record whether we have already
14484 processed this entry. */
14486 if ((off
& 1) != 0)
14490 /* Generate relocs for the dynamic linker, except in
14491 the case of TLSLD where we'll use one entry per
14499 ? h
->elf
.type
== STT_GNU_IFUNC
14500 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14503 relgot
= htab
->elf
.irelplt
;
14505 htab
->local_ifunc_resolver
= 1;
14506 else if (is_static_defined (&h
->elf
))
14507 htab
->maybe_local_ifunc_resolver
= 1;
14510 || (bfd_link_pic (info
)
14512 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14513 || (tls_type
== (TLS_TLS
| TLS_LD
)
14514 && !h
->elf
.def_dynamic
))
14515 && !(tls_type
== (TLS_TLS
| TLS_TPREL
)
14516 && bfd_link_executable (info
)
14517 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
))))
14518 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14519 if (relgot
!= NULL
)
14521 outrel
.r_offset
= (got
->output_section
->vma
14522 + got
->output_offset
14524 outrel
.r_addend
= addend
;
14525 if (tls_type
& (TLS_LD
| TLS_GD
))
14527 outrel
.r_addend
= 0;
14528 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14529 if (tls_type
== (TLS_TLS
| TLS_GD
))
14531 loc
= relgot
->contents
;
14532 loc
+= (relgot
->reloc_count
++
14533 * sizeof (Elf64_External_Rela
));
14534 bfd_elf64_swap_reloca_out (output_bfd
,
14536 outrel
.r_offset
+= 8;
14537 outrel
.r_addend
= addend
;
14539 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14542 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14543 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14544 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14545 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14546 else if (indx
!= 0)
14547 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14551 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14553 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14555 /* Write the .got section contents for the sake
14557 loc
= got
->contents
+ off
;
14558 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14562 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14564 outrel
.r_addend
+= relocation
;
14565 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14567 if (htab
->elf
.tls_sec
== NULL
)
14568 outrel
.r_addend
= 0;
14570 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14573 loc
= relgot
->contents
;
14574 loc
+= (relgot
->reloc_count
++
14575 * sizeof (Elf64_External_Rela
));
14576 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14579 /* Init the .got section contents here if we're not
14580 emitting a reloc. */
14583 relocation
+= addend
;
14586 if (htab
->elf
.tls_sec
== NULL
)
14590 if (tls_type
& TLS_LD
)
14593 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14594 if (tls_type
& TLS_TPREL
)
14595 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14598 if (tls_type
& (TLS_GD
| TLS_LD
))
14600 bfd_put_64 (output_bfd
, relocation
,
14601 got
->contents
+ off
+ 8);
14605 bfd_put_64 (output_bfd
, relocation
,
14606 got
->contents
+ off
);
14610 if (off
>= (bfd_vma
) -2)
14613 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14614 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14618 case R_PPC64_PLT16_HA
:
14619 case R_PPC64_PLT16_HI
:
14620 case R_PPC64_PLT16_LO
:
14621 case R_PPC64_PLT32
:
14622 case R_PPC64_PLT64
:
14623 /* Relocation is to the entry for this symbol in the
14624 procedure linkage table. */
14626 struct plt_entry
**plt_list
= NULL
;
14628 plt_list
= &h
->elf
.plt
.plist
;
14629 else if (local_got_ents
!= NULL
)
14631 struct plt_entry
**local_plt
= (struct plt_entry
**)
14632 (local_got_ents
+ symtab_hdr
->sh_info
);
14633 unsigned char *local_got_tls_masks
= (unsigned char *)
14634 (local_plt
+ symtab_hdr
->sh_info
);
14635 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14636 plt_list
= local_plt
+ r_symndx
;
14640 struct plt_entry
*ent
;
14642 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14643 if (ent
->plt
.offset
!= (bfd_vma
) -1
14644 && ent
->addend
== orig_rel
.r_addend
)
14648 plt
= htab
->elf
.splt
;
14649 if (!htab
->elf
.dynamic_sections_created
14651 || h
->elf
.dynindx
== -1)
14652 plt
= htab
->elf
.iplt
;
14653 relocation
= (plt
->output_section
->vma
14654 + plt
->output_offset
14655 + ent
->plt
.offset
);
14657 unresolved_reloc
= FALSE
;
14665 /* Relocation value is TOC base. */
14666 relocation
= TOCstart
;
14667 if (r_symndx
== STN_UNDEF
)
14668 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14669 else if (unresolved_reloc
)
14671 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14672 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14674 unresolved_reloc
= TRUE
;
14677 /* TOC16 relocs. We want the offset relative to the TOC base,
14678 which is the address of the start of the TOC plus 0x8000.
14679 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14681 case R_PPC64_TOC16
:
14682 case R_PPC64_TOC16_LO
:
14683 case R_PPC64_TOC16_HI
:
14684 case R_PPC64_TOC16_DS
:
14685 case R_PPC64_TOC16_LO_DS
:
14686 case R_PPC64_TOC16_HA
:
14687 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14690 /* Relocate against the beginning of the section. */
14691 case R_PPC64_SECTOFF
:
14692 case R_PPC64_SECTOFF_LO
:
14693 case R_PPC64_SECTOFF_HI
:
14694 case R_PPC64_SECTOFF_DS
:
14695 case R_PPC64_SECTOFF_LO_DS
:
14696 case R_PPC64_SECTOFF_HA
:
14698 addend
-= sec
->output_section
->vma
;
14701 case R_PPC64_REL16
:
14702 case R_PPC64_REL16_LO
:
14703 case R_PPC64_REL16_HI
:
14704 case R_PPC64_REL16_HA
:
14705 case R_PPC64_REL16DX_HA
:
14708 case R_PPC64_REL14
:
14709 case R_PPC64_REL14_BRNTAKEN
:
14710 case R_PPC64_REL14_BRTAKEN
:
14711 case R_PPC64_REL24
:
14714 case R_PPC64_TPREL16
:
14715 case R_PPC64_TPREL16_LO
:
14716 case R_PPC64_TPREL16_HI
:
14717 case R_PPC64_TPREL16_HA
:
14718 case R_PPC64_TPREL16_DS
:
14719 case R_PPC64_TPREL16_LO_DS
:
14720 case R_PPC64_TPREL16_HIGH
:
14721 case R_PPC64_TPREL16_HIGHA
:
14722 case R_PPC64_TPREL16_HIGHER
:
14723 case R_PPC64_TPREL16_HIGHERA
:
14724 case R_PPC64_TPREL16_HIGHEST
:
14725 case R_PPC64_TPREL16_HIGHESTA
:
14727 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14728 && h
->elf
.dynindx
== -1)
14730 /* Make this relocation against an undefined weak symbol
14731 resolve to zero. This is really just a tweak, since
14732 code using weak externs ought to check that they are
14733 defined before using them. */
14734 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14736 insn
= bfd_get_32 (input_bfd
, p
);
14737 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14739 bfd_put_32 (input_bfd
, insn
, p
);
14742 if (htab
->elf
.tls_sec
!= NULL
)
14743 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14744 /* The TPREL16 relocs shouldn't really be used in shared
14745 libs or with non-local symbols as that will result in
14746 DT_TEXTREL being set, but support them anyway. */
14749 case R_PPC64_DTPREL16
:
14750 case R_PPC64_DTPREL16_LO
:
14751 case R_PPC64_DTPREL16_HI
:
14752 case R_PPC64_DTPREL16_HA
:
14753 case R_PPC64_DTPREL16_DS
:
14754 case R_PPC64_DTPREL16_LO_DS
:
14755 case R_PPC64_DTPREL16_HIGH
:
14756 case R_PPC64_DTPREL16_HIGHA
:
14757 case R_PPC64_DTPREL16_HIGHER
:
14758 case R_PPC64_DTPREL16_HIGHERA
:
14759 case R_PPC64_DTPREL16_HIGHEST
:
14760 case R_PPC64_DTPREL16_HIGHESTA
:
14761 if (htab
->elf
.tls_sec
!= NULL
)
14762 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14765 case R_PPC64_ADDR64_LOCAL
:
14766 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14771 case R_PPC64_DTPMOD64
:
14776 case R_PPC64_TPREL64
:
14777 if (htab
->elf
.tls_sec
!= NULL
)
14778 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14781 case R_PPC64_DTPREL64
:
14782 if (htab
->elf
.tls_sec
!= NULL
)
14783 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14784 /* Fall through. */
14786 /* Relocations that may need to be propagated if this is a
14788 case R_PPC64_REL30
:
14789 case R_PPC64_REL32
:
14790 case R_PPC64_REL64
:
14791 case R_PPC64_ADDR14
:
14792 case R_PPC64_ADDR14_BRNTAKEN
:
14793 case R_PPC64_ADDR14_BRTAKEN
:
14794 case R_PPC64_ADDR16
:
14795 case R_PPC64_ADDR16_DS
:
14796 case R_PPC64_ADDR16_HA
:
14797 case R_PPC64_ADDR16_HI
:
14798 case R_PPC64_ADDR16_HIGH
:
14799 case R_PPC64_ADDR16_HIGHA
:
14800 case R_PPC64_ADDR16_HIGHER
:
14801 case R_PPC64_ADDR16_HIGHERA
:
14802 case R_PPC64_ADDR16_HIGHEST
:
14803 case R_PPC64_ADDR16_HIGHESTA
:
14804 case R_PPC64_ADDR16_LO
:
14805 case R_PPC64_ADDR16_LO_DS
:
14806 case R_PPC64_ADDR24
:
14807 case R_PPC64_ADDR32
:
14808 case R_PPC64_ADDR64
:
14809 case R_PPC64_UADDR16
:
14810 case R_PPC64_UADDR32
:
14811 case R_PPC64_UADDR64
:
14813 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14816 if (NO_OPD_RELOCS
&& is_opd
)
14819 if (bfd_link_pic (info
)
14821 || h
->dyn_relocs
!= NULL
)
14822 && ((h
!= NULL
&& pc_dynrelocs (h
))
14823 || must_be_dyn_reloc (info
, r_type
)))
14825 ? h
->dyn_relocs
!= NULL
14826 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14828 bfd_boolean skip
, relocate
;
14833 /* When generating a dynamic object, these relocations
14834 are copied into the output file to be resolved at run
14840 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14841 input_section
, rel
->r_offset
);
14842 if (out_off
== (bfd_vma
) -1)
14844 else if (out_off
== (bfd_vma
) -2)
14845 skip
= TRUE
, relocate
= TRUE
;
14846 out_off
+= (input_section
->output_section
->vma
14847 + input_section
->output_offset
);
14848 outrel
.r_offset
= out_off
;
14849 outrel
.r_addend
= rel
->r_addend
;
14851 /* Optimize unaligned reloc use. */
14852 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14853 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14854 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14855 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14856 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14857 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14858 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14859 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14860 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14863 memset (&outrel
, 0, sizeof outrel
);
14864 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14866 && r_type
!= R_PPC64_TOC
)
14868 indx
= h
->elf
.dynindx
;
14869 BFD_ASSERT (indx
!= -1);
14870 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14874 /* This symbol is local, or marked to become local,
14875 or this is an opd section reloc which must point
14876 at a local function. */
14877 outrel
.r_addend
+= relocation
;
14878 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14880 if (is_opd
&& h
!= NULL
)
14882 /* Lie about opd entries. This case occurs
14883 when building shared libraries and we
14884 reference a function in another shared
14885 lib. The same thing happens for a weak
14886 definition in an application that's
14887 overridden by a strong definition in a
14888 shared lib. (I believe this is a generic
14889 bug in binutils handling of weak syms.)
14890 In these cases we won't use the opd
14891 entry in this lib. */
14892 unresolved_reloc
= FALSE
;
14895 && r_type
== R_PPC64_ADDR64
14897 ? h
->elf
.type
== STT_GNU_IFUNC
14898 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14899 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14902 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14904 /* We need to relocate .opd contents for ld.so.
14905 Prelink also wants simple and consistent rules
14906 for relocs. This make all RELATIVE relocs have
14907 *r_offset equal to r_addend. */
14914 ? h
->elf
.type
== STT_GNU_IFUNC
14915 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14917 info
->callbacks
->einfo
14918 /* xgettext:c-format */
14919 (_("%H: %s for indirect "
14920 "function `%T' unsupported\n"),
14921 input_bfd
, input_section
, rel
->r_offset
,
14922 ppc64_elf_howto_table
[r_type
]->name
,
14926 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14928 else if (sec
== NULL
|| sec
->owner
== NULL
)
14930 bfd_set_error (bfd_error_bad_value
);
14937 osec
= sec
->output_section
;
14938 indx
= elf_section_data (osec
)->dynindx
;
14942 if ((osec
->flags
& SEC_READONLY
) == 0
14943 && htab
->elf
.data_index_section
!= NULL
)
14944 osec
= htab
->elf
.data_index_section
;
14946 osec
= htab
->elf
.text_index_section
;
14947 indx
= elf_section_data (osec
)->dynindx
;
14949 BFD_ASSERT (indx
!= 0);
14951 /* We are turning this relocation into one
14952 against a section symbol, so subtract out
14953 the output section's address but not the
14954 offset of the input section in the output
14956 outrel
.r_addend
-= osec
->vma
;
14959 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14963 sreloc
= elf_section_data (input_section
)->sreloc
;
14965 ? h
->elf
.type
== STT_GNU_IFUNC
14966 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14968 sreloc
= htab
->elf
.irelplt
;
14970 htab
->local_ifunc_resolver
= 1;
14971 else if (is_static_defined (&h
->elf
))
14972 htab
->maybe_local_ifunc_resolver
= 1;
14974 if (sreloc
== NULL
)
14977 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14980 loc
= sreloc
->contents
;
14981 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14982 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14984 /* If this reloc is against an external symbol, it will
14985 be computed at runtime, so there's no need to do
14986 anything now. However, for the sake of prelink ensure
14987 that the section contents are a known value. */
14990 unresolved_reloc
= FALSE
;
14991 /* The value chosen here is quite arbitrary as ld.so
14992 ignores section contents except for the special
14993 case of .opd where the contents might be accessed
14994 before relocation. Choose zero, as that won't
14995 cause reloc overflow. */
14998 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14999 to improve backward compatibility with older
15001 if (r_type
== R_PPC64_ADDR64
)
15002 addend
= outrel
.r_addend
;
15003 /* Adjust pc_relative relocs to have zero in *r_offset. */
15004 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15005 addend
= outrel
.r_offset
;
15011 case R_PPC64_GLOB_DAT
:
15012 case R_PPC64_JMP_SLOT
:
15013 case R_PPC64_JMP_IREL
:
15014 case R_PPC64_RELATIVE
:
15015 /* We shouldn't ever see these dynamic relocs in relocatable
15017 /* Fall through. */
15019 case R_PPC64_PLTGOT16
:
15020 case R_PPC64_PLTGOT16_DS
:
15021 case R_PPC64_PLTGOT16_HA
:
15022 case R_PPC64_PLTGOT16_HI
:
15023 case R_PPC64_PLTGOT16_LO
:
15024 case R_PPC64_PLTGOT16_LO_DS
:
15025 case R_PPC64_PLTREL32
:
15026 case R_PPC64_PLTREL64
:
15027 /* These ones haven't been implemented yet. */
15029 info
->callbacks
->einfo
15030 /* xgettext:c-format */
15031 (_("%P: %B: %s is not supported for `%T'\n"),
15033 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15035 bfd_set_error (bfd_error_invalid_operation
);
15040 /* Multi-instruction sequences that access the TOC can be
15041 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15042 to nop; addi rb,r2,x; */
15043 howto
= ppc64_elf_howto_table
[(int) r_type
];
15049 case R_PPC64_GOT_TLSLD16_HI
:
15050 case R_PPC64_GOT_TLSGD16_HI
:
15051 case R_PPC64_GOT_TPREL16_HI
:
15052 case R_PPC64_GOT_DTPREL16_HI
:
15053 case R_PPC64_GOT16_HI
:
15054 case R_PPC64_TOC16_HI
:
15055 /* These relocs would only be useful if building up an
15056 offset to later add to r2, perhaps in an indexed
15057 addressing mode instruction. Don't try to optimize.
15058 Unfortunately, the possibility of someone building up an
15059 offset like this or even with the HA relocs, means that
15060 we need to check the high insn when optimizing the low
15064 case R_PPC64_GOT_TLSLD16_HA
:
15065 case R_PPC64_GOT_TLSGD16_HA
:
15066 case R_PPC64_GOT_TPREL16_HA
:
15067 case R_PPC64_GOT_DTPREL16_HA
:
15068 case R_PPC64_GOT16_HA
:
15069 case R_PPC64_TOC16_HA
:
15070 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15071 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15073 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15074 bfd_put_32 (input_bfd
, NOP
, p
);
15078 case R_PPC64_GOT_TLSLD16_LO
:
15079 case R_PPC64_GOT_TLSGD16_LO
:
15080 case R_PPC64_GOT_TPREL16_LO_DS
:
15081 case R_PPC64_GOT_DTPREL16_LO_DS
:
15082 case R_PPC64_GOT16_LO
:
15083 case R_PPC64_GOT16_LO_DS
:
15084 case R_PPC64_TOC16_LO
:
15085 case R_PPC64_TOC16_LO_DS
:
15086 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15087 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15089 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15090 insn
= bfd_get_32 (input_bfd
, p
);
15091 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15093 /* Transform addic to addi when we change reg. */
15094 insn
&= ~((0x3f << 26) | (0x1f << 16));
15095 insn
|= (14u << 26) | (2 << 16);
15099 insn
&= ~(0x1f << 16);
15102 bfd_put_32 (input_bfd
, insn
, p
);
15106 case R_PPC64_TPREL16_HA
:
15107 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15109 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15110 insn
= bfd_get_32 (input_bfd
, p
);
15111 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15112 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15113 /* xgettext:c-format */
15114 info
->callbacks
->minfo
15115 (_("%H: warning: %s unexpected insn %#x.\n"),
15116 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
15118 bfd_put_32 (input_bfd
, NOP
, p
);
15122 case R_PPC64_TPREL16_LO
:
15123 case R_PPC64_TPREL16_LO_DS
:
15124 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15126 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15127 insn
= bfd_get_32 (input_bfd
, p
);
15128 insn
&= ~(0x1f << 16);
15130 bfd_put_32 (input_bfd
, insn
, p
);
15135 /* Do any further special processing. */
15141 case R_PPC64_REL16_HA
:
15142 case R_PPC64_REL16DX_HA
:
15143 case R_PPC64_ADDR16_HA
:
15144 case R_PPC64_ADDR16_HIGHA
:
15145 case R_PPC64_ADDR16_HIGHERA
:
15146 case R_PPC64_ADDR16_HIGHESTA
:
15147 case R_PPC64_TOC16_HA
:
15148 case R_PPC64_SECTOFF_HA
:
15149 case R_PPC64_TPREL16_HA
:
15150 case R_PPC64_TPREL16_HIGHA
:
15151 case R_PPC64_TPREL16_HIGHERA
:
15152 case R_PPC64_TPREL16_HIGHESTA
:
15153 case R_PPC64_DTPREL16_HA
:
15154 case R_PPC64_DTPREL16_HIGHA
:
15155 case R_PPC64_DTPREL16_HIGHERA
:
15156 case R_PPC64_DTPREL16_HIGHESTA
:
15157 /* It's just possible that this symbol is a weak symbol
15158 that's not actually defined anywhere. In that case,
15159 'sec' would be NULL, and we should leave the symbol
15160 alone (it will be set to zero elsewhere in the link). */
15163 /* Fall through. */
15165 case R_PPC64_GOT16_HA
:
15166 case R_PPC64_PLTGOT16_HA
:
15167 case R_PPC64_PLT16_HA
:
15168 case R_PPC64_GOT_TLSGD16_HA
:
15169 case R_PPC64_GOT_TLSLD16_HA
:
15170 case R_PPC64_GOT_TPREL16_HA
:
15171 case R_PPC64_GOT_DTPREL16_HA
:
15172 /* Add 0x10000 if sign bit in 0:15 is set.
15173 Bits 0:15 are not used. */
15177 case R_PPC64_ADDR16_DS
:
15178 case R_PPC64_ADDR16_LO_DS
:
15179 case R_PPC64_GOT16_DS
:
15180 case R_PPC64_GOT16_LO_DS
:
15181 case R_PPC64_PLT16_LO_DS
:
15182 case R_PPC64_SECTOFF_DS
:
15183 case R_PPC64_SECTOFF_LO_DS
:
15184 case R_PPC64_TOC16_DS
:
15185 case R_PPC64_TOC16_LO_DS
:
15186 case R_PPC64_PLTGOT16_DS
:
15187 case R_PPC64_PLTGOT16_LO_DS
:
15188 case R_PPC64_GOT_TPREL16_DS
:
15189 case R_PPC64_GOT_TPREL16_LO_DS
:
15190 case R_PPC64_GOT_DTPREL16_DS
:
15191 case R_PPC64_GOT_DTPREL16_LO_DS
:
15192 case R_PPC64_TPREL16_DS
:
15193 case R_PPC64_TPREL16_LO_DS
:
15194 case R_PPC64_DTPREL16_DS
:
15195 case R_PPC64_DTPREL16_LO_DS
:
15196 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15198 /* If this reloc is against an lq, lxv, or stxv insn, then
15199 the value must be a multiple of 16. This is somewhat of
15200 a hack, but the "correct" way to do this by defining _DQ
15201 forms of all the _DS relocs bloats all reloc switches in
15202 this file. It doesn't make much sense to use these
15203 relocs in data, so testing the insn should be safe. */
15204 if ((insn
& (0x3f << 26)) == (56u << 26)
15205 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15207 relocation
+= addend
;
15208 addend
= insn
& (mask
^ 3);
15209 if ((relocation
& mask
) != 0)
15211 relocation
^= relocation
& mask
;
15212 info
->callbacks
->einfo
15213 /* xgettext:c-format */
15214 (_("%H: error: %s not a multiple of %u\n"),
15215 input_bfd
, input_section
, rel
->r_offset
,
15218 bfd_set_error (bfd_error_bad_value
);
15225 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15226 because such sections are not SEC_ALLOC and thus ld.so will
15227 not process them. */
15228 if (unresolved_reloc
15229 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15230 && h
->elf
.def_dynamic
)
15231 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15232 rel
->r_offset
) != (bfd_vma
) -1)
15234 info
->callbacks
->einfo
15235 /* xgettext:c-format */
15236 (_("%H: unresolvable %s against `%T'\n"),
15237 input_bfd
, input_section
, rel
->r_offset
,
15239 h
->elf
.root
.root
.string
);
15243 /* 16-bit fields in insns mostly have signed values, but a
15244 few insns have 16-bit unsigned values. Really, we should
15245 have different reloc types. */
15246 if (howto
->complain_on_overflow
!= complain_overflow_dont
15247 && howto
->dst_mask
== 0xffff
15248 && (input_section
->flags
& SEC_CODE
) != 0)
15250 enum complain_overflow complain
= complain_overflow_signed
;
15252 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15253 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15254 complain
= complain_overflow_bitfield
;
15255 else if (howto
->rightshift
== 0
15256 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15257 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15258 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15259 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15260 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15261 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15262 complain
= complain_overflow_unsigned
;
15263 if (howto
->complain_on_overflow
!= complain
)
15265 alt_howto
= *howto
;
15266 alt_howto
.complain_on_overflow
= complain
;
15267 howto
= &alt_howto
;
15271 if (r_type
== R_PPC64_REL16DX_HA
)
15273 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15274 if (rel
->r_offset
+ 4 > input_section
->size
)
15275 r
= bfd_reloc_outofrange
;
15278 relocation
+= addend
;
15279 relocation
-= (rel
->r_offset
15280 + input_section
->output_offset
15281 + input_section
->output_section
->vma
);
15282 relocation
= (bfd_signed_vma
) relocation
>> 16;
15283 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15285 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15286 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15288 if (relocation
+ 0x8000 > 0xffff)
15289 r
= bfd_reloc_overflow
;
15293 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15294 rel
->r_offset
, relocation
, addend
);
15296 if (r
!= bfd_reloc_ok
)
15298 char *more_info
= NULL
;
15299 const char *reloc_name
= howto
->name
;
15301 if (reloc_dest
!= DEST_NORMAL
)
15303 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15304 if (more_info
!= NULL
)
15306 strcpy (more_info
, reloc_name
);
15307 strcat (more_info
, (reloc_dest
== DEST_OPD
15308 ? " (OPD)" : " (stub)"));
15309 reloc_name
= more_info
;
15313 if (r
== bfd_reloc_overflow
)
15315 /* On code like "if (foo) foo();" don't report overflow
15316 on a branch to zero when foo is undefined. */
15318 && (reloc_dest
== DEST_STUB
15320 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15321 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15322 && is_branch_reloc (r_type
))))
15323 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15324 sym_name
, reloc_name
,
15326 input_bfd
, input_section
,
15331 info
->callbacks
->einfo
15332 /* xgettext:c-format */
15333 (_("%H: %s against `%T': error %d\n"),
15334 input_bfd
, input_section
, rel
->r_offset
,
15335 reloc_name
, sym_name
, (int) r
);
15338 if (more_info
!= NULL
)
15348 Elf_Internal_Shdr
*rel_hdr
;
15349 size_t deleted
= rel
- wrel
;
15351 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15352 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15353 if (rel_hdr
->sh_size
== 0)
15355 /* It is too late to remove an empty reloc section. Leave
15357 ??? What is wrong with an empty section??? */
15358 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15361 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15362 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15363 input_section
->reloc_count
-= deleted
;
15366 /* If we're emitting relocations, then shortly after this function
15367 returns, reloc offsets and addends for this section will be
15368 adjusted. Worse, reloc symbol indices will be for the output
15369 file rather than the input. Save a copy of the relocs for
15370 opd_entry_value. */
15371 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15374 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15375 rel
= bfd_alloc (input_bfd
, amt
);
15376 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15377 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15380 memcpy (rel
, relocs
, amt
);
15385 /* Adjust the value of any local symbols in opd sections. */
15388 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15389 const char *name ATTRIBUTE_UNUSED
,
15390 Elf_Internal_Sym
*elfsym
,
15391 asection
*input_sec
,
15392 struct elf_link_hash_entry
*h
)
15394 struct _opd_sec_data
*opd
;
15401 opd
= get_opd_info (input_sec
);
15402 if (opd
== NULL
|| opd
->adjust
== NULL
)
15405 value
= elfsym
->st_value
- input_sec
->output_offset
;
15406 if (!bfd_link_relocatable (info
))
15407 value
-= input_sec
->output_section
->vma
;
15409 adjust
= opd
->adjust
[OPD_NDX (value
)];
15413 elfsym
->st_value
+= adjust
;
15417 /* Finish up dynamic symbol handling. We set the contents of various
15418 dynamic sections here. */
15421 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15422 struct bfd_link_info
*info
,
15423 struct elf_link_hash_entry
*h
,
15424 Elf_Internal_Sym
*sym
)
15426 struct ppc_link_hash_table
*htab
;
15427 struct plt_entry
*ent
;
15428 Elf_Internal_Rela rela
;
15431 htab
= ppc_hash_table (info
);
15435 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15436 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15438 /* This symbol has an entry in the procedure linkage
15439 table. Set it up. */
15440 if (!htab
->elf
.dynamic_sections_created
15441 || h
->dynindx
== -1)
15443 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15445 && (h
->root
.type
== bfd_link_hash_defined
15446 || h
->root
.type
== bfd_link_hash_defweak
));
15447 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15448 + htab
->elf
.iplt
->output_offset
15449 + ent
->plt
.offset
);
15451 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15453 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15454 rela
.r_addend
= (h
->root
.u
.def
.value
15455 + h
->root
.u
.def
.section
->output_offset
15456 + h
->root
.u
.def
.section
->output_section
->vma
15458 loc
= (htab
->elf
.irelplt
->contents
15459 + (htab
->elf
.irelplt
->reloc_count
++
15460 * sizeof (Elf64_External_Rela
)));
15461 htab
->local_ifunc_resolver
= 1;
15465 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15466 + htab
->elf
.splt
->output_offset
15467 + ent
->plt
.offset
);
15468 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15469 rela
.r_addend
= ent
->addend
;
15470 loc
= (htab
->elf
.srelplt
->contents
15471 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15472 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15473 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15474 htab
->maybe_local_ifunc_resolver
= 1;
15476 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15478 if (!htab
->opd_abi
)
15480 if (!h
->def_regular
)
15482 /* Mark the symbol as undefined, rather than as
15483 defined in glink. Leave the value if there were
15484 any relocations where pointer equality matters
15485 (this is a clue for the dynamic linker, to make
15486 function pointer comparisons work between an
15487 application and shared library), otherwise set it
15489 sym
->st_shndx
= SHN_UNDEF
;
15490 if (!h
->pointer_equality_needed
)
15492 else if (!h
->ref_regular_nonweak
)
15494 /* This breaks function pointer comparisons, but
15495 that is better than breaking tests for a NULL
15496 function pointer. */
15505 /* This symbol needs a copy reloc. Set it up. */
15508 if (h
->dynindx
== -1
15509 || (h
->root
.type
!= bfd_link_hash_defined
15510 && h
->root
.type
!= bfd_link_hash_defweak
)
15511 || htab
->elf
.srelbss
== NULL
15512 || htab
->elf
.sreldynrelro
== NULL
)
15515 rela
.r_offset
= (h
->root
.u
.def
.value
15516 + h
->root
.u
.def
.section
->output_section
->vma
15517 + h
->root
.u
.def
.section
->output_offset
);
15518 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15520 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15521 srel
= htab
->elf
.sreldynrelro
;
15523 srel
= htab
->elf
.srelbss
;
15524 loc
= srel
->contents
;
15525 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15526 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15532 /* Used to decide how to sort relocs in an optimal manner for the
15533 dynamic linker, before writing them out. */
15535 static enum elf_reloc_type_class
15536 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15537 const asection
*rel_sec
,
15538 const Elf_Internal_Rela
*rela
)
15540 enum elf_ppc64_reloc_type r_type
;
15541 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15543 if (rel_sec
== htab
->elf
.irelplt
)
15544 return reloc_class_ifunc
;
15546 r_type
= ELF64_R_TYPE (rela
->r_info
);
15549 case R_PPC64_RELATIVE
:
15550 return reloc_class_relative
;
15551 case R_PPC64_JMP_SLOT
:
15552 return reloc_class_plt
;
15554 return reloc_class_copy
;
15556 return reloc_class_normal
;
15560 /* Finish up the dynamic sections. */
15563 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15564 struct bfd_link_info
*info
)
15566 struct ppc_link_hash_table
*htab
;
15570 htab
= ppc_hash_table (info
);
15574 dynobj
= htab
->elf
.dynobj
;
15575 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15577 if (htab
->elf
.dynamic_sections_created
)
15579 Elf64_External_Dyn
*dyncon
, *dynconend
;
15581 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15584 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15585 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15586 for (; dyncon
< dynconend
; dyncon
++)
15588 Elf_Internal_Dyn dyn
;
15591 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15598 case DT_PPC64_GLINK
:
15600 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15601 /* We stupidly defined DT_PPC64_GLINK to be the start
15602 of glink rather than the first entry point, which is
15603 what ld.so needs, and now have a bigger stub to
15604 support automatic multiple TOCs. */
15605 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15609 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15612 dyn
.d_un
.d_ptr
= s
->vma
;
15616 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15617 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15618 if (htab
->has_plt_localentry0
)
15619 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15622 case DT_PPC64_OPDSZ
:
15623 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15626 dyn
.d_un
.d_val
= s
->size
;
15630 s
= htab
->elf
.splt
;
15631 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15635 s
= htab
->elf
.srelplt
;
15636 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15640 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15644 if (htab
->local_ifunc_resolver
)
15645 info
->callbacks
->einfo
15646 (_("%X%P: text relocations and GNU indirect "
15647 "functions will result in a segfault at runtime\n"));
15648 else if (htab
->maybe_local_ifunc_resolver
)
15649 info
->callbacks
->einfo
15650 (_("%P: warning: text relocations and GNU indirect "
15651 "functions may result in a segfault at runtime\n"));
15655 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15659 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15660 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15662 /* Fill in the first entry in the global offset table.
15663 We use it to hold the link-time TOCbase. */
15664 bfd_put_64 (output_bfd
,
15665 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15666 htab
->elf
.sgot
->contents
);
15668 /* Set .got entry size. */
15669 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15672 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15673 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15675 /* Set .plt entry size. */
15676 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15677 = PLT_ENTRY_SIZE (htab
);
15680 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15681 brlt ourselves if emitrelocations. */
15682 if (htab
->brlt
!= NULL
15683 && htab
->brlt
->reloc_count
!= 0
15684 && !_bfd_elf_link_output_relocs (output_bfd
,
15686 elf_section_data (htab
->brlt
)->rela
.hdr
,
15687 elf_section_data (htab
->brlt
)->relocs
,
15691 if (htab
->glink
!= NULL
15692 && htab
->glink
->reloc_count
!= 0
15693 && !_bfd_elf_link_output_relocs (output_bfd
,
15695 elf_section_data (htab
->glink
)->rela
.hdr
,
15696 elf_section_data (htab
->glink
)->relocs
,
15700 if (htab
->glink_eh_frame
!= NULL
15701 && htab
->glink_eh_frame
->size
!= 0)
15705 struct map_stub
*group
;
15708 p
= htab
->glink_eh_frame
->contents
;
15709 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15711 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15712 if (group
->stub_sec
!= NULL
)
15714 /* Offset to stub section. */
15715 val
= (group
->stub_sec
->output_section
->vma
15716 + group
->stub_sec
->output_offset
);
15717 val
-= (htab
->glink_eh_frame
->output_section
->vma
15718 + htab
->glink_eh_frame
->output_offset
15719 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15720 if (val
+ 0x80000000 > 0xffffffff)
15722 info
->callbacks
->einfo
15723 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15724 group
->stub_sec
->name
);
15727 bfd_put_32 (dynobj
, val
, p
+ 8);
15728 p
+= stub_eh_frame_size (group
, align
);
15730 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15732 /* Offset to .glink. */
15733 val
= (htab
->glink
->output_section
->vma
15734 + htab
->glink
->output_offset
15736 val
-= (htab
->glink_eh_frame
->output_section
->vma
15737 + htab
->glink_eh_frame
->output_offset
15738 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15739 if (val
+ 0x80000000 > 0xffffffff)
15741 info
->callbacks
->einfo
15742 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15743 htab
->glink
->name
);
15746 bfd_put_32 (dynobj
, val
, p
+ 8);
15747 p
+= (24 + align
- 1) & -align
;
15750 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15751 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15752 htab
->glink_eh_frame
,
15753 htab
->glink_eh_frame
->contents
))
15757 /* We need to handle writing out multiple GOT sections ourselves,
15758 since we didn't add them to DYNOBJ. We know dynobj is the first
15760 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15764 if (!is_ppc64_elf (dynobj
))
15767 s
= ppc64_elf_tdata (dynobj
)->got
;
15770 && s
->output_section
!= bfd_abs_section_ptr
15771 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15772 s
->contents
, s
->output_offset
,
15775 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15778 && s
->output_section
!= bfd_abs_section_ptr
15779 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15780 s
->contents
, s
->output_offset
,
15788 #include "elf64-target.h"
15790 /* FreeBSD support */
15792 #undef TARGET_LITTLE_SYM
15793 #undef TARGET_LITTLE_NAME
15795 #undef TARGET_BIG_SYM
15796 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15797 #undef TARGET_BIG_NAME
15798 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15801 #define ELF_OSABI ELFOSABI_FREEBSD
15804 #define elf64_bed elf64_powerpc_fbsd_bed
15806 #include "elf64-target.h"