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_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_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)
3273 symcount
= static_count
;
3275 symcount
+= dyn_count
;
3279 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3283 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3285 /* Use both symbol tables. */
3286 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3287 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3289 else if (!relocatable
&& static_count
== 0)
3290 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3292 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3294 synthetic_relocatable
= relocatable
;
3295 synthetic_opd
= opd
;
3296 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3298 if (!relocatable
&& symcount
> 1)
3301 /* Trim duplicate syms, since we may have merged the normal and
3302 dynamic symbols. Actually, we only care about syms that have
3303 different values, so trim any with the same value. */
3304 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3305 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3306 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3307 syms
[j
++] = syms
[i
];
3312 /* Note that here and in compare_symbols we can't compare opd and
3313 sym->section directly. With separate debug info files, the
3314 symbols will be extracted from the debug file while abfd passed
3315 to this function is the real binary. */
3316 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3320 for (; i
< symcount
; ++i
)
3321 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3322 != (SEC_CODE
| SEC_ALLOC
))
3323 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3327 for (; i
< symcount
; ++i
)
3328 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3333 for (; i
< symcount
; ++i
)
3334 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3338 for (; i
< symcount
; ++i
)
3339 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3340 != (SEC_CODE
| SEC_ALLOC
))
3348 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3353 if (opdsymend
== secsymend
)
3356 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3357 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3361 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3368 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3372 while (r
< opd
->relocation
+ relcount
3373 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3376 if (r
== opd
->relocation
+ relcount
)
3379 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3382 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3385 sym
= *r
->sym_ptr_ptr
;
3386 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3387 sym
->section
->id
, sym
->value
+ r
->addend
))
3390 size
+= sizeof (asymbol
);
3391 size
+= strlen (syms
[i
]->name
) + 2;
3397 s
= *ret
= bfd_malloc (size
);
3404 names
= (char *) (s
+ count
);
3406 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3410 while (r
< opd
->relocation
+ relcount
3411 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3414 if (r
== opd
->relocation
+ relcount
)
3417 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3420 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3423 sym
= *r
->sym_ptr_ptr
;
3424 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3425 sym
->section
->id
, sym
->value
+ r
->addend
))
3430 s
->flags
|= BSF_SYNTHETIC
;
3431 s
->section
= sym
->section
;
3432 s
->value
= sym
->value
+ r
->addend
;
3435 len
= strlen (syms
[i
]->name
);
3436 memcpy (names
, syms
[i
]->name
, len
+ 1);
3438 /* Have udata.p point back to the original symbol this
3439 synthetic symbol was derived from. */
3440 s
->udata
.p
= syms
[i
];
3447 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3448 bfd_byte
*contents
= NULL
;
3451 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3452 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3455 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3457 free_contents_and_exit_err
:
3459 free_contents_and_exit
:
3466 for (i
= secsymend
; i
< opdsymend
; ++i
)
3470 /* Ignore bogus symbols. */
3471 if (syms
[i
]->value
> opd
->size
- 8)
3474 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3475 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3478 size
+= sizeof (asymbol
);
3479 size
+= strlen (syms
[i
]->name
) + 2;
3483 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3485 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3487 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3489 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3491 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3492 goto free_contents_and_exit_err
;
3494 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3495 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3498 extdynend
= extdyn
+ dynamic
->size
;
3499 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3501 Elf_Internal_Dyn dyn
;
3502 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3504 if (dyn
.d_tag
== DT_NULL
)
3507 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3509 /* The first glink stub starts at offset 32; see
3510 comment in ppc64_elf_finish_dynamic_sections. */
3511 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3512 /* The .glink section usually does not survive the final
3513 link; search for the section (usually .text) where the
3514 glink stubs now reside. */
3515 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3526 /* Determine __glink trampoline by reading the relative branch
3527 from the first glink stub. */
3529 unsigned int off
= 0;
3531 while (bfd_get_section_contents (abfd
, glink
, buf
,
3532 glink_vma
+ off
- glink
->vma
, 4))
3534 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3536 if ((insn
& ~0x3fffffc) == 0)
3538 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3547 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3549 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3552 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3553 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3554 goto free_contents_and_exit_err
;
3556 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3557 size
+= plt_count
* sizeof (asymbol
);
3559 p
= relplt
->relocation
;
3560 for (i
= 0; i
< plt_count
; i
++, p
++)
3562 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3564 size
+= sizeof ("+0x") - 1 + 16;
3570 goto free_contents_and_exit
;
3571 s
= *ret
= bfd_malloc (size
);
3573 goto free_contents_and_exit_err
;
3575 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3577 for (i
= secsymend
; i
< opdsymend
; ++i
)
3581 if (syms
[i
]->value
> opd
->size
- 8)
3584 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3585 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3589 asection
*sec
= abfd
->sections
;
3596 long mid
= (lo
+ hi
) >> 1;
3597 if (syms
[mid
]->section
->vma
< ent
)
3599 else if (syms
[mid
]->section
->vma
> ent
)
3603 sec
= syms
[mid
]->section
;
3608 if (lo
>= hi
&& lo
> codesecsym
)
3609 sec
= syms
[lo
- 1]->section
;
3611 for (; sec
!= NULL
; sec
= sec
->next
)
3615 /* SEC_LOAD may not be set if SEC is from a separate debug
3617 if ((sec
->flags
& SEC_ALLOC
) == 0)
3619 if ((sec
->flags
& SEC_CODE
) != 0)
3622 s
->flags
|= BSF_SYNTHETIC
;
3623 s
->value
= ent
- s
->section
->vma
;
3626 len
= strlen (syms
[i
]->name
);
3627 memcpy (names
, syms
[i
]->name
, len
+ 1);
3629 /* Have udata.p point back to the original symbol this
3630 synthetic symbol was derived from. */
3631 s
->udata
.p
= syms
[i
];
3637 if (glink
!= NULL
&& relplt
!= NULL
)
3641 /* Add a symbol for the main glink trampoline. */
3642 memset (s
, 0, sizeof *s
);
3644 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3646 s
->value
= resolv_vma
- glink
->vma
;
3648 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3649 names
+= sizeof ("__glink_PLTresolve");
3654 /* FIXME: It would be very much nicer to put sym@plt on the
3655 stub rather than on the glink branch table entry. The
3656 objdump disassembler would then use a sensible symbol
3657 name on plt calls. The difficulty in doing so is
3658 a) finding the stubs, and,
3659 b) matching stubs against plt entries, and,
3660 c) there can be multiple stubs for a given plt entry.
3662 Solving (a) could be done by code scanning, but older
3663 ppc64 binaries used different stubs to current code.
3664 (b) is the tricky one since you need to known the toc
3665 pointer for at least one function that uses a pic stub to
3666 be able to calculate the plt address referenced.
3667 (c) means gdb would need to set multiple breakpoints (or
3668 find the glink branch itself) when setting breakpoints
3669 for pending shared library loads. */
3670 p
= relplt
->relocation
;
3671 for (i
= 0; i
< plt_count
; i
++, p
++)
3675 *s
= **p
->sym_ptr_ptr
;
3676 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3677 we are defining a symbol, ensure one of them is set. */
3678 if ((s
->flags
& BSF_LOCAL
) == 0)
3679 s
->flags
|= BSF_GLOBAL
;
3680 s
->flags
|= BSF_SYNTHETIC
;
3682 s
->value
= glink_vma
- glink
->vma
;
3685 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3686 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3690 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3691 names
+= sizeof ("+0x") - 1;
3692 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3693 names
+= strlen (names
);
3695 memcpy (names
, "@plt", sizeof ("@plt"));
3696 names
+= sizeof ("@plt");
3716 /* The following functions are specific to the ELF linker, while
3717 functions above are used generally. Those named ppc64_elf_* are
3718 called by the main ELF linker code. They appear in this file more
3719 or less in the order in which they are called. eg.
3720 ppc64_elf_check_relocs is called early in the link process,
3721 ppc64_elf_finish_dynamic_sections is one of the last functions
3724 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3725 functions have both a function code symbol and a function descriptor
3726 symbol. A call to foo in a relocatable object file looks like:
3733 The function definition in another object file might be:
3737 . .quad .TOC.@tocbase
3743 When the linker resolves the call during a static link, the branch
3744 unsurprisingly just goes to .foo and the .opd information is unused.
3745 If the function definition is in a shared library, things are a little
3746 different: The call goes via a plt call stub, the opd information gets
3747 copied to the plt, and the linker patches the nop.
3755 . std 2,40(1) # in practice, the call stub
3756 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3757 . addi 11,11,Lfoo@toc@l # this is the general idea
3765 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3767 The "reloc ()" notation is supposed to indicate that the linker emits
3768 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3771 What are the difficulties here? Well, firstly, the relocations
3772 examined by the linker in check_relocs are against the function code
3773 sym .foo, while the dynamic relocation in the plt is emitted against
3774 the function descriptor symbol, foo. Somewhere along the line, we need
3775 to carefully copy dynamic link information from one symbol to the other.
3776 Secondly, the generic part of the elf linker will make .foo a dynamic
3777 symbol as is normal for most other backends. We need foo dynamic
3778 instead, at least for an application final link. However, when
3779 creating a shared library containing foo, we need to have both symbols
3780 dynamic so that references to .foo are satisfied during the early
3781 stages of linking. Otherwise the linker might decide to pull in a
3782 definition from some other object, eg. a static library.
3784 Update: As of August 2004, we support a new convention. Function
3785 calls may use the function descriptor symbol, ie. "bl foo". This
3786 behaves exactly as "bl .foo". */
3788 /* Of those relocs that might be copied as dynamic relocs, this function
3789 selects those that must be copied when linking a shared library,
3790 even when the symbol is local. */
3793 must_be_dyn_reloc (struct bfd_link_info
*info
,
3794 enum elf_ppc64_reloc_type r_type
)
3806 case R_PPC64_TPREL16
:
3807 case R_PPC64_TPREL16_LO
:
3808 case R_PPC64_TPREL16_HI
:
3809 case R_PPC64_TPREL16_HA
:
3810 case R_PPC64_TPREL16_DS
:
3811 case R_PPC64_TPREL16_LO_DS
:
3812 case R_PPC64_TPREL16_HIGH
:
3813 case R_PPC64_TPREL16_HIGHA
:
3814 case R_PPC64_TPREL16_HIGHER
:
3815 case R_PPC64_TPREL16_HIGHERA
:
3816 case R_PPC64_TPREL16_HIGHEST
:
3817 case R_PPC64_TPREL16_HIGHESTA
:
3818 case R_PPC64_TPREL64
:
3819 return !bfd_link_executable (info
);
3823 /* Whether an undefined weak symbol should resolve to its link-time
3824 value, even in PIC or PIE objects. */
3825 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3826 ((H)->root.type == bfd_link_hash_undefweak \
3827 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3828 || (INFO)->dynamic_undefined_weak == 0))
3830 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3831 copying dynamic variables from a shared lib into an app's dynbss
3832 section, and instead use a dynamic relocation to point into the
3833 shared lib. With code that gcc generates, it's vital that this be
3834 enabled; In the PowerPC64 ABI, the address of a function is actually
3835 the address of a function descriptor, which resides in the .opd
3836 section. gcc uses the descriptor directly rather than going via the
3837 GOT as some other ABI's do, which means that initialized function
3838 pointers must reference the descriptor. Thus, a function pointer
3839 initialized to the address of a function in a shared library will
3840 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3841 redefines the function descriptor symbol to point to the copy. This
3842 presents a problem as a plt entry for that function is also
3843 initialized from the function descriptor symbol and the copy reloc
3844 may not be initialized first. */
3845 #define ELIMINATE_COPY_RELOCS 1
3847 /* Section name for stubs is the associated section name plus this
3849 #define STUB_SUFFIX ".stub"
3852 ppc_stub_long_branch:
3853 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3854 destination, but a 24 bit branch in a stub section will reach.
3857 ppc_stub_plt_branch:
3858 Similar to the above, but a 24 bit branch in the stub section won't
3859 reach its destination.
3860 . addis %r11,%r2,xxx@toc@ha
3861 . ld %r12,xxx@toc@l(%r11)
3866 Used to call a function in a shared library. If it so happens that
3867 the plt entry referenced crosses a 64k boundary, then an extra
3868 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3870 . addis %r11,%r2,xxx@toc@ha
3871 . ld %r12,xxx+0@toc@l(%r11)
3873 . ld %r2,xxx+8@toc@l(%r11)
3874 . ld %r11,xxx+16@toc@l(%r11)
3877 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3878 code to adjust the value and save r2 to support multiple toc sections.
3879 A ppc_stub_long_branch with an r2 offset looks like:
3881 . addis %r2,%r2,off@ha
3882 . addi %r2,%r2,off@l
3885 A ppc_stub_plt_branch with an r2 offset looks like:
3887 . addis %r11,%r2,xxx@toc@ha
3888 . ld %r12,xxx@toc@l(%r11)
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3894 In cases where the "addis" instruction would add zero, the "addis" is
3895 omitted and following instructions modified slightly in some cases.
3898 enum ppc_stub_type
{
3900 ppc_stub_long_branch
,
3901 ppc_stub_long_branch_r2off
,
3902 ppc_stub_plt_branch
,
3903 ppc_stub_plt_branch_r2off
,
3905 ppc_stub_plt_call_r2save
,
3906 ppc_stub_global_entry
,
3910 /* Information on stub grouping. */
3913 /* The stub section. */
3915 /* This is the section to which stubs in the group will be attached. */
3918 struct map_stub
*next
;
3919 /* Whether to emit a copy of register save/restore functions in this
3924 struct ppc_stub_hash_entry
{
3926 /* Base hash table entry structure. */
3927 struct bfd_hash_entry root
;
3929 enum ppc_stub_type stub_type
;
3931 /* Group information. */
3932 struct map_stub
*group
;
3934 /* Offset within stub_sec of the beginning of this stub. */
3935 bfd_vma stub_offset
;
3937 /* Given the symbol's value and its section we can determine its final
3938 value when building the stubs (so the stub knows where to jump. */
3939 bfd_vma target_value
;
3940 asection
*target_section
;
3942 /* The symbol table entry, if any, that this was derived from. */
3943 struct ppc_link_hash_entry
*h
;
3944 struct plt_entry
*plt_ent
;
3946 /* Symbol st_other. */
3947 unsigned char other
;
3950 struct ppc_branch_hash_entry
{
3952 /* Base hash table entry structure. */
3953 struct bfd_hash_entry root
;
3955 /* Offset within branch lookup table. */
3956 unsigned int offset
;
3958 /* Generation marker. */
3962 /* Used to track dynamic relocations for local symbols. */
3963 struct ppc_dyn_relocs
3965 struct ppc_dyn_relocs
*next
;
3967 /* The input section of the reloc. */
3970 /* Total number of relocs copied for the input section. */
3971 unsigned int count
: 31;
3973 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3974 unsigned int ifunc
: 1;
3977 struct ppc_link_hash_entry
3979 struct elf_link_hash_entry elf
;
3982 /* A pointer to the most recently used stub hash entry against this
3984 struct ppc_stub_hash_entry
*stub_cache
;
3986 /* A pointer to the next symbol starting with a '.' */
3987 struct ppc_link_hash_entry
*next_dot_sym
;
3990 /* Track dynamic relocs copied for this symbol. */
3991 struct elf_dyn_relocs
*dyn_relocs
;
3993 /* Chain of aliases referring to a weakdef. */
3994 struct ppc_link_hash_entry
*weakref
;
3996 /* Link between function code and descriptor symbols. */
3997 struct ppc_link_hash_entry
*oh
;
3999 /* Flag function code and descriptor symbols. */
4000 unsigned int is_func
:1;
4001 unsigned int is_func_descriptor
:1;
4002 unsigned int fake
:1;
4004 /* Whether global opd/toc sym has been adjusted or not.
4005 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4006 should be set for all globals defined in any opd/toc section. */
4007 unsigned int adjust_done
:1;
4009 /* Set if this is an out-of-line register save/restore function,
4010 with non-standard calling convention. */
4011 unsigned int save_res
:1;
4013 /* Contexts in which symbol is used in the GOT (or TOC).
4014 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4015 corresponding relocs are encountered during check_relocs.
4016 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4017 indicate the corresponding GOT entry type is not needed.
4018 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4019 a TPREL one. We use a separate flag rather than setting TPREL
4020 just for convenience in distinguishing the two cases. */
4021 #define TLS_GD 1 /* GD reloc. */
4022 #define TLS_LD 2 /* LD reloc. */
4023 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4024 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4025 #define TLS_TLS 16 /* Any TLS reloc. */
4026 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4027 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4028 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4029 unsigned char tls_mask
;
4032 /* ppc64 ELF linker hash table. */
4034 struct ppc_link_hash_table
4036 struct elf_link_hash_table elf
;
4038 /* The stub hash table. */
4039 struct bfd_hash_table stub_hash_table
;
4041 /* Another hash table for plt_branch stubs. */
4042 struct bfd_hash_table branch_hash_table
;
4044 /* Hash table for function prologue tocsave. */
4045 htab_t tocsave_htab
;
4047 /* Various options and other info passed from the linker. */
4048 struct ppc64_elf_params
*params
;
4050 /* The size of sec_info below. */
4051 unsigned int sec_info_arr_size
;
4053 /* Per-section array of extra section info. Done this way rather
4054 than as part of ppc64_elf_section_data so we have the info for
4055 non-ppc64 sections. */
4058 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4063 /* The section group that this section belongs to. */
4064 struct map_stub
*group
;
4065 /* A temp section list pointer. */
4070 /* Linked list of groups. */
4071 struct map_stub
*group
;
4073 /* Temp used when calculating TOC pointers. */
4076 asection
*toc_first_sec
;
4078 /* Used when adding symbols. */
4079 struct ppc_link_hash_entry
*dot_syms
;
4081 /* Shortcuts to get to dynamic linker sections. */
4086 asection
*glink_eh_frame
;
4088 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4089 struct ppc_link_hash_entry
*tls_get_addr
;
4090 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4092 /* The size of reliplt used by got entry relocs. */
4093 bfd_size_type got_reli_size
;
4096 unsigned long stub_count
[ppc_stub_global_entry
];
4098 /* Number of stubs against global syms. */
4099 unsigned long stub_globals
;
4101 /* Set if we're linking code with function descriptors. */
4102 unsigned int opd_abi
:1;
4104 /* Support for multiple toc sections. */
4105 unsigned int do_multi_toc
:1;
4106 unsigned int multi_toc_needed
:1;
4107 unsigned int second_toc_pass
:1;
4108 unsigned int do_toc_opt
:1;
4111 unsigned int stub_error
:1;
4113 /* Whether func_desc_adjust needs to be run over symbols. */
4114 unsigned int need_func_desc_adj
:1;
4116 /* Whether there exist local gnu indirect function resolvers,
4117 referenced by dynamic relocations. */
4118 unsigned int local_ifunc_resolver
:1;
4119 unsigned int maybe_local_ifunc_resolver
:1;
4121 /* Incremented every time we size stubs. */
4122 unsigned int stub_iteration
;
4124 /* Small local sym cache. */
4125 struct sym_cache sym_cache
;
4128 /* Rename some of the generic section flags to better document how they
4131 /* Nonzero if this section has TLS related relocations. */
4132 #define has_tls_reloc sec_flg0
4134 /* Nonzero if this section has a call to __tls_get_addr. */
4135 #define has_tls_get_addr_call sec_flg1
4137 /* Nonzero if this section has any toc or got relocs. */
4138 #define has_toc_reloc sec_flg2
4140 /* Nonzero if this section has a call to another section that uses
4142 #define makes_toc_func_call sec_flg3
4144 /* Recursion protection when determining above flag. */
4145 #define call_check_in_progress sec_flg4
4146 #define call_check_done sec_flg5
4148 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4150 #define ppc_hash_table(p) \
4151 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4152 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4154 #define ppc_stub_hash_lookup(table, string, create, copy) \
4155 ((struct ppc_stub_hash_entry *) \
4156 bfd_hash_lookup ((table), (string), (create), (copy)))
4158 #define ppc_branch_hash_lookup(table, string, create, copy) \
4159 ((struct ppc_branch_hash_entry *) \
4160 bfd_hash_lookup ((table), (string), (create), (copy)))
4162 /* Create an entry in the stub hash table. */
4164 static struct bfd_hash_entry
*
4165 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4166 struct bfd_hash_table
*table
,
4169 /* Allocate the structure if it has not already been allocated by a
4173 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4178 /* Call the allocation method of the superclass. */
4179 entry
= bfd_hash_newfunc (entry
, table
, string
);
4182 struct ppc_stub_hash_entry
*eh
;
4184 /* Initialize the local fields. */
4185 eh
= (struct ppc_stub_hash_entry
*) entry
;
4186 eh
->stub_type
= ppc_stub_none
;
4188 eh
->stub_offset
= 0;
4189 eh
->target_value
= 0;
4190 eh
->target_section
= NULL
;
4199 /* Create an entry in the branch hash table. */
4201 static struct bfd_hash_entry
*
4202 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4203 struct bfd_hash_table
*table
,
4206 /* Allocate the structure if it has not already been allocated by a
4210 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4215 /* Call the allocation method of the superclass. */
4216 entry
= bfd_hash_newfunc (entry
, table
, string
);
4219 struct ppc_branch_hash_entry
*eh
;
4221 /* Initialize the local fields. */
4222 eh
= (struct ppc_branch_hash_entry
*) entry
;
4230 /* Create an entry in a ppc64 ELF linker hash table. */
4232 static struct bfd_hash_entry
*
4233 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4234 struct bfd_hash_table
*table
,
4237 /* Allocate the structure if it has not already been allocated by a
4241 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4246 /* Call the allocation method of the superclass. */
4247 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4250 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4252 memset (&eh
->u
.stub_cache
, 0,
4253 (sizeof (struct ppc_link_hash_entry
)
4254 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4256 /* When making function calls, old ABI code references function entry
4257 points (dot symbols), while new ABI code references the function
4258 descriptor symbol. We need to make any combination of reference and
4259 definition work together, without breaking archive linking.
4261 For a defined function "foo" and an undefined call to "bar":
4262 An old object defines "foo" and ".foo", references ".bar" (possibly
4264 A new object defines "foo" and references "bar".
4266 A new object thus has no problem with its undefined symbols being
4267 satisfied by definitions in an old object. On the other hand, the
4268 old object won't have ".bar" satisfied by a new object.
4270 Keep a list of newly added dot-symbols. */
4272 if (string
[0] == '.')
4274 struct ppc_link_hash_table
*htab
;
4276 htab
= (struct ppc_link_hash_table
*) table
;
4277 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4278 htab
->dot_syms
= eh
;
4285 struct tocsave_entry
{
4291 tocsave_htab_hash (const void *p
)
4293 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4294 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4298 tocsave_htab_eq (const void *p1
, const void *p2
)
4300 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4301 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4302 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4305 /* Destroy a ppc64 ELF linker hash table. */
4308 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4310 struct ppc_link_hash_table
*htab
;
4312 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4313 if (htab
->tocsave_htab
)
4314 htab_delete (htab
->tocsave_htab
);
4315 bfd_hash_table_free (&htab
->branch_hash_table
);
4316 bfd_hash_table_free (&htab
->stub_hash_table
);
4317 _bfd_elf_link_hash_table_free (obfd
);
4320 /* Create a ppc64 ELF linker hash table. */
4322 static struct bfd_link_hash_table
*
4323 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4325 struct ppc_link_hash_table
*htab
;
4326 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4328 htab
= bfd_zmalloc (amt
);
4332 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4333 sizeof (struct ppc_link_hash_entry
),
4340 /* Init the stub hash table too. */
4341 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4342 sizeof (struct ppc_stub_hash_entry
)))
4344 _bfd_elf_link_hash_table_free (abfd
);
4348 /* And the branch hash table. */
4349 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4350 sizeof (struct ppc_branch_hash_entry
)))
4352 bfd_hash_table_free (&htab
->stub_hash_table
);
4353 _bfd_elf_link_hash_table_free (abfd
);
4357 htab
->tocsave_htab
= htab_try_create (1024,
4361 if (htab
->tocsave_htab
== NULL
)
4363 ppc64_elf_link_hash_table_free (abfd
);
4366 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4368 /* Initializing two fields of the union is just cosmetic. We really
4369 only care about glist, but when compiled on a 32-bit host the
4370 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4371 debugger inspection of these fields look nicer. */
4372 htab
->elf
.init_got_refcount
.refcount
= 0;
4373 htab
->elf
.init_got_refcount
.glist
= NULL
;
4374 htab
->elf
.init_plt_refcount
.refcount
= 0;
4375 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4376 htab
->elf
.init_got_offset
.offset
= 0;
4377 htab
->elf
.init_got_offset
.glist
= NULL
;
4378 htab
->elf
.init_plt_offset
.offset
= 0;
4379 htab
->elf
.init_plt_offset
.glist
= NULL
;
4381 return &htab
->elf
.root
;
4384 /* Create sections for linker generated code. */
4387 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4389 struct ppc_link_hash_table
*htab
;
4392 htab
= ppc_hash_table (info
);
4394 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4395 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4396 if (htab
->params
->save_restore_funcs
)
4398 /* Create .sfpr for code to save and restore fp regs. */
4399 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4401 if (htab
->sfpr
== NULL
4402 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4406 if (bfd_link_relocatable (info
))
4409 /* Create .glink for lazy dynamic linking support. */
4410 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4412 if (htab
->glink
== NULL
4413 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4416 if (!info
->no_ld_generated_unwind_info
)
4418 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4419 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4420 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4423 if (htab
->glink_eh_frame
== NULL
4424 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4428 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4429 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4430 if (htab
->elf
.iplt
== NULL
4431 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4434 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4435 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4437 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4438 if (htab
->elf
.irelplt
== NULL
4439 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4442 /* Create branch lookup table for plt_branch stubs. */
4443 flags
= (SEC_ALLOC
| SEC_LOAD
4444 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4445 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4447 if (htab
->brlt
== NULL
4448 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4451 if (!bfd_link_pic (info
))
4454 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4455 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4456 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4459 if (htab
->relbrlt
== NULL
4460 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4466 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4469 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4470 struct ppc64_elf_params
*params
)
4472 struct ppc_link_hash_table
*htab
;
4474 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4476 /* Always hook our dynamic sections into the first bfd, which is the
4477 linker created stub bfd. This ensures that the GOT header is at
4478 the start of the output TOC section. */
4479 htab
= ppc_hash_table (info
);
4480 htab
->elf
.dynobj
= params
->stub_bfd
;
4481 htab
->params
= params
;
4483 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4486 /* Build a name for an entry in the stub hash table. */
4489 ppc_stub_name (const asection
*input_section
,
4490 const asection
*sym_sec
,
4491 const struct ppc_link_hash_entry
*h
,
4492 const Elf_Internal_Rela
*rel
)
4497 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4498 offsets from a sym as a branch target? In fact, we could
4499 probably assume the addend is always zero. */
4500 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4504 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4505 stub_name
= bfd_malloc (len
);
4506 if (stub_name
== NULL
)
4509 len
= sprintf (stub_name
, "%08x.%s+%x",
4510 input_section
->id
& 0xffffffff,
4511 h
->elf
.root
.root
.string
,
4512 (int) rel
->r_addend
& 0xffffffff);
4516 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4517 stub_name
= bfd_malloc (len
);
4518 if (stub_name
== NULL
)
4521 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4522 input_section
->id
& 0xffffffff,
4523 sym_sec
->id
& 0xffffffff,
4524 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4525 (int) rel
->r_addend
& 0xffffffff);
4527 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4528 stub_name
[len
- 2] = 0;
4532 /* Look up an entry in the stub hash. Stub entries are cached because
4533 creating the stub name takes a bit of time. */
4535 static struct ppc_stub_hash_entry
*
4536 ppc_get_stub_entry (const asection
*input_section
,
4537 const asection
*sym_sec
,
4538 struct ppc_link_hash_entry
*h
,
4539 const Elf_Internal_Rela
*rel
,
4540 struct ppc_link_hash_table
*htab
)
4542 struct ppc_stub_hash_entry
*stub_entry
;
4543 struct map_stub
*group
;
4545 /* If this input section is part of a group of sections sharing one
4546 stub section, then use the id of the first section in the group.
4547 Stub names need to include a section id, as there may well be
4548 more than one stub used to reach say, printf, and we need to
4549 distinguish between them. */
4550 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4554 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4555 && h
->u
.stub_cache
->h
== h
4556 && h
->u
.stub_cache
->group
== group
)
4558 stub_entry
= h
->u
.stub_cache
;
4564 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4565 if (stub_name
== NULL
)
4568 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4569 stub_name
, FALSE
, FALSE
);
4571 h
->u
.stub_cache
= stub_entry
;
4579 /* Add a new stub entry to the stub hash. Not all fields of the new
4580 stub entry are initialised. */
4582 static struct ppc_stub_hash_entry
*
4583 ppc_add_stub (const char *stub_name
,
4585 struct bfd_link_info
*info
)
4587 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4588 struct map_stub
*group
;
4591 struct ppc_stub_hash_entry
*stub_entry
;
4593 group
= htab
->sec_info
[section
->id
].u
.group
;
4594 link_sec
= group
->link_sec
;
4595 stub_sec
= group
->stub_sec
;
4596 if (stub_sec
== NULL
)
4602 namelen
= strlen (link_sec
->name
);
4603 len
= namelen
+ sizeof (STUB_SUFFIX
);
4604 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4608 memcpy (s_name
, link_sec
->name
, namelen
);
4609 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4610 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4611 if (stub_sec
== NULL
)
4613 group
->stub_sec
= stub_sec
;
4616 /* Enter this entry into the linker stub hash table. */
4617 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4619 if (stub_entry
== NULL
)
4621 /* xgettext:c-format */
4622 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4623 section
->owner
, stub_name
);
4627 stub_entry
->group
= group
;
4628 stub_entry
->stub_offset
= 0;
4632 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4633 not already done. */
4636 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4638 asection
*got
, *relgot
;
4640 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4642 if (!is_ppc64_elf (abfd
))
4648 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4651 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4652 | SEC_LINKER_CREATED
);
4654 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4656 || !bfd_set_section_alignment (abfd
, got
, 3))
4659 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4660 flags
| SEC_READONLY
);
4662 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4665 ppc64_elf_tdata (abfd
)->got
= got
;
4666 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4670 /* Follow indirect and warning symbol links. */
4672 static inline struct bfd_link_hash_entry
*
4673 follow_link (struct bfd_link_hash_entry
*h
)
4675 while (h
->type
== bfd_link_hash_indirect
4676 || h
->type
== bfd_link_hash_warning
)
4681 static inline struct elf_link_hash_entry
*
4682 elf_follow_link (struct elf_link_hash_entry
*h
)
4684 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4687 static inline struct ppc_link_hash_entry
*
4688 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4690 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4693 /* Merge PLT info on FROM with that on TO. */
4696 move_plt_plist (struct ppc_link_hash_entry
*from
,
4697 struct ppc_link_hash_entry
*to
)
4699 if (from
->elf
.plt
.plist
!= NULL
)
4701 if (to
->elf
.plt
.plist
!= NULL
)
4703 struct plt_entry
**entp
;
4704 struct plt_entry
*ent
;
4706 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4708 struct plt_entry
*dent
;
4710 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4711 if (dent
->addend
== ent
->addend
)
4713 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4720 *entp
= to
->elf
.plt
.plist
;
4723 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4724 from
->elf
.plt
.plist
= NULL
;
4728 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4731 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4732 struct elf_link_hash_entry
*dir
,
4733 struct elf_link_hash_entry
*ind
)
4735 struct ppc_link_hash_entry
*edir
, *eind
;
4737 edir
= (struct ppc_link_hash_entry
*) dir
;
4738 eind
= (struct ppc_link_hash_entry
*) ind
;
4740 edir
->is_func
|= eind
->is_func
;
4741 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4742 edir
->tls_mask
|= eind
->tls_mask
;
4743 if (eind
->oh
!= NULL
)
4744 edir
->oh
= ppc_follow_link (eind
->oh
);
4746 /* If called to transfer flags for a weakdef during processing
4747 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4748 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4749 if (!(ELIMINATE_COPY_RELOCS
4750 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4751 && edir
->elf
.dynamic_adjusted
))
4752 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4754 if (edir
->elf
.versioned
!= versioned_hidden
)
4755 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4756 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4757 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4758 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4759 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4761 /* If we were called to copy over info for a weak sym, don't copy
4762 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4763 in order to simplify readonly_dynrelocs and save a field in the
4764 symbol hash entry, but that means dyn_relocs can't be used in any
4765 tests about a specific symbol, or affect other symbol flags which
4767 Chain weakdefs so we can get from the weakdef back to an alias.
4768 The list is circular so that we don't need to use u.weakdef as
4769 well as this list to look at all aliases. */
4770 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4772 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4777 cur
= edir
->weakref
;
4782 /* We can be called twice for the same symbols.
4783 Don't make multiple loops. */
4787 } while (cur
!= edir
);
4789 next
= add
->weakref
;
4792 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4793 edir
->weakref
= add
;
4796 } while (add
!= NULL
&& add
!= eind
);
4800 /* Copy over any dynamic relocs we may have on the indirect sym. */
4801 if (eind
->dyn_relocs
!= NULL
)
4803 if (edir
->dyn_relocs
!= NULL
)
4805 struct elf_dyn_relocs
**pp
;
4806 struct elf_dyn_relocs
*p
;
4808 /* Add reloc counts against the indirect sym to the direct sym
4809 list. Merge any entries against the same section. */
4810 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4812 struct elf_dyn_relocs
*q
;
4814 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4815 if (q
->sec
== p
->sec
)
4817 q
->pc_count
+= p
->pc_count
;
4818 q
->count
+= p
->count
;
4825 *pp
= edir
->dyn_relocs
;
4828 edir
->dyn_relocs
= eind
->dyn_relocs
;
4829 eind
->dyn_relocs
= NULL
;
4832 /* Copy over got entries that we may have already seen to the
4833 symbol which just became indirect. */
4834 if (eind
->elf
.got
.glist
!= NULL
)
4836 if (edir
->elf
.got
.glist
!= NULL
)
4838 struct got_entry
**entp
;
4839 struct got_entry
*ent
;
4841 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4843 struct got_entry
*dent
;
4845 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4846 if (dent
->addend
== ent
->addend
4847 && dent
->owner
== ent
->owner
4848 && dent
->tls_type
== ent
->tls_type
)
4850 dent
->got
.refcount
+= ent
->got
.refcount
;
4857 *entp
= edir
->elf
.got
.glist
;
4860 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4861 eind
->elf
.got
.glist
= NULL
;
4864 /* And plt entries. */
4865 move_plt_plist (eind
, edir
);
4867 if (eind
->elf
.dynindx
!= -1)
4869 if (edir
->elf
.dynindx
!= -1)
4870 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4871 edir
->elf
.dynstr_index
);
4872 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4873 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4874 eind
->elf
.dynindx
= -1;
4875 eind
->elf
.dynstr_index
= 0;
4879 /* Find the function descriptor hash entry from the given function code
4880 hash entry FH. Link the entries via their OH fields. */
4882 static struct ppc_link_hash_entry
*
4883 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4885 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4889 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4891 fdh
= (struct ppc_link_hash_entry
*)
4892 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4896 fdh
->is_func_descriptor
= 1;
4902 fdh
= ppc_follow_link (fdh
);
4903 fdh
->is_func_descriptor
= 1;
4908 /* Make a fake function descriptor sym for the undefined code sym FH. */
4910 static struct ppc_link_hash_entry
*
4911 make_fdh (struct bfd_link_info
*info
,
4912 struct ppc_link_hash_entry
*fh
)
4914 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4915 struct bfd_link_hash_entry
*bh
= NULL
;
4916 struct ppc_link_hash_entry
*fdh
;
4917 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4921 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4922 fh
->elf
.root
.root
.string
+ 1,
4923 flags
, bfd_und_section_ptr
, 0,
4924 NULL
, FALSE
, FALSE
, &bh
))
4927 fdh
= (struct ppc_link_hash_entry
*) bh
;
4928 fdh
->elf
.non_elf
= 0;
4930 fdh
->is_func_descriptor
= 1;
4937 /* Fix function descriptor symbols defined in .opd sections to be
4941 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4942 struct bfd_link_info
*info
,
4943 Elf_Internal_Sym
*isym
,
4945 flagword
*flags ATTRIBUTE_UNUSED
,
4949 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4950 && (ibfd
->flags
& DYNAMIC
) == 0
4951 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4952 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4955 && strcmp ((*sec
)->name
, ".opd") == 0)
4959 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4960 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4961 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4963 /* If the symbol is a function defined in .opd, and the function
4964 code is in a discarded group, let it appear to be undefined. */
4965 if (!bfd_link_relocatable (info
)
4966 && (*sec
)->reloc_count
!= 0
4967 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4968 FALSE
) != (bfd_vma
) -1
4969 && discarded_section (code_sec
))
4971 *sec
= bfd_und_section_ptr
;
4972 isym
->st_shndx
= SHN_UNDEF
;
4975 else if (*sec
!= NULL
4976 && strcmp ((*sec
)->name
, ".toc") == 0
4977 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4979 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4981 htab
->params
->object_in_toc
= 1;
4984 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4986 if (abiversion (ibfd
) == 0)
4987 set_abiversion (ibfd
, 2);
4988 else if (abiversion (ibfd
) == 1)
4990 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4991 " for ABI version 1\n"), name
);
4992 bfd_set_error (bfd_error_bad_value
);
5000 /* Merge non-visibility st_other attributes: local entry point. */
5003 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5004 const Elf_Internal_Sym
*isym
,
5005 bfd_boolean definition
,
5006 bfd_boolean dynamic
)
5008 if (definition
&& !dynamic
)
5009 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5010 | ELF_ST_VISIBILITY (h
->other
));
5013 /* Hook called on merging a symbol. We use this to clear "fake" since
5014 we now have a real symbol. */
5017 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5018 const Elf_Internal_Sym
*isym ATTRIBUTE_UNUSED
,
5019 asection
**psec ATTRIBUTE_UNUSED
,
5020 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5021 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5022 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5023 const asection
*oldsec ATTRIBUTE_UNUSED
)
5025 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5029 /* This function makes an old ABI object reference to ".bar" cause the
5030 inclusion of a new ABI object archive that defines "bar".
5031 NAME is a symbol defined in an archive. Return a symbol in the hash
5032 table that might be satisfied by the archive symbols. */
5034 static struct elf_link_hash_entry
*
5035 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5036 struct bfd_link_info
*info
,
5039 struct elf_link_hash_entry
*h
;
5043 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5045 /* Don't return this sym if it is a fake function descriptor
5046 created by add_symbol_adjust. */
5047 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5053 len
= strlen (name
);
5054 dot_name
= bfd_alloc (abfd
, len
+ 2);
5055 if (dot_name
== NULL
)
5056 return (struct elf_link_hash_entry
*) 0 - 1;
5058 memcpy (dot_name
+ 1, name
, len
+ 1);
5059 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5060 bfd_release (abfd
, dot_name
);
5064 /* This function satisfies all old ABI object references to ".bar" if a
5065 new ABI object defines "bar". Well, at least, undefined dot symbols
5066 are made weak. This stops later archive searches from including an
5067 object if we already have a function descriptor definition. It also
5068 prevents the linker complaining about undefined symbols.
5069 We also check and correct mismatched symbol visibility here. The
5070 most restrictive visibility of the function descriptor and the
5071 function entry symbol is used. */
5074 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5076 struct ppc_link_hash_table
*htab
;
5077 struct ppc_link_hash_entry
*fdh
;
5079 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5080 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5082 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5085 if (eh
->elf
.root
.root
.string
[0] != '.')
5088 htab
= ppc_hash_table (info
);
5092 fdh
= lookup_fdh (eh
, htab
);
5094 && !bfd_link_relocatable (info
)
5095 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5096 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5097 && eh
->elf
.ref_regular
)
5099 /* Make an undefined function descriptor sym, in order to
5100 pull in an --as-needed shared lib. Archives are handled
5102 fdh
= make_fdh (info
, eh
);
5109 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5110 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5112 /* Make both descriptor and entry symbol have the most
5113 constraining visibility of either symbol. */
5114 if (entry_vis
< descr_vis
)
5115 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5116 else if (entry_vis
> descr_vis
)
5117 eh
->elf
.other
+= descr_vis
- entry_vis
;
5119 /* Propagate reference flags from entry symbol to function
5120 descriptor symbol. */
5121 fdh
->elf
.root
.non_ir_ref
|= eh
->elf
.root
.non_ir_ref
;
5122 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5123 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5124 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5126 if (!fdh
->elf
.forced_local
5127 && fdh
->elf
.dynindx
== -1
5128 && fdh
->elf
.versioned
!= versioned_hidden
5129 && (bfd_link_dll (info
)
5130 || fdh
->elf
.def_dynamic
5131 || fdh
->elf
.ref_dynamic
)
5132 && (eh
->elf
.ref_regular
5133 || eh
->elf
.def_regular
))
5135 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5143 /* Set up opd section info and abiversion for IBFD, and process list
5144 of dot-symbols we made in link_hash_newfunc. */
5147 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5149 struct ppc_link_hash_table
*htab
;
5150 struct ppc_link_hash_entry
**p
, *eh
;
5151 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5153 if (opd
!= NULL
&& opd
->size
!= 0)
5155 if (abiversion (ibfd
) == 0)
5156 set_abiversion (ibfd
, 1);
5157 else if (abiversion (ibfd
) >= 2)
5159 /* xgettext:c-format */
5160 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5162 ibfd
, abiversion (ibfd
));
5163 bfd_set_error (bfd_error_bad_value
);
5167 if ((ibfd
->flags
& DYNAMIC
) == 0
5168 && (opd
->flags
& SEC_RELOC
) != 0
5169 && opd
->reloc_count
!= 0
5170 && !bfd_is_abs_section (opd
->output_section
))
5172 /* Garbage collection needs some extra help with .opd sections.
5173 We don't want to necessarily keep everything referenced by
5174 relocs in .opd, as that would keep all functions. Instead,
5175 if we reference an .opd symbol (a function descriptor), we
5176 want to keep the function code symbol's section. This is
5177 easy for global symbols, but for local syms we need to keep
5178 information about the associated function section. */
5180 asection
**opd_sym_map
;
5182 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5183 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5184 if (opd_sym_map
== NULL
)
5186 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5187 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5188 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5192 if (!is_ppc64_elf (info
->output_bfd
))
5194 htab
= ppc_hash_table (info
);
5198 /* For input files without an explicit abiversion in e_flags
5199 we should have flagged any with symbol st_other bits set
5200 as ELFv1 and above flagged those with .opd as ELFv2.
5201 Set the output abiversion if not yet set, and for any input
5202 still ambiguous, take its abiversion from the output.
5203 Differences in ABI are reported later. */
5204 if (abiversion (info
->output_bfd
) == 0)
5205 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5206 else if (abiversion (ibfd
) == 0)
5207 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5209 p
= &htab
->dot_syms
;
5210 while ((eh
= *p
) != NULL
)
5213 if (&eh
->elf
== htab
->elf
.hgot
)
5215 else if (htab
->elf
.hgot
== NULL
5216 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5217 htab
->elf
.hgot
= &eh
->elf
;
5218 else if (abiversion (ibfd
) <= 1)
5220 htab
->need_func_desc_adj
= 1;
5221 if (!add_symbol_adjust (eh
, info
))
5224 p
= &eh
->u
.next_dot_sym
;
5229 /* Undo hash table changes when an --as-needed input file is determined
5230 not to be needed. */
5233 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5234 struct bfd_link_info
*info
,
5235 enum notice_asneeded_action act
)
5237 if (act
== notice_not_needed
)
5239 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5244 htab
->dot_syms
= NULL
;
5246 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5249 /* If --just-symbols against a final linked binary, then assume we need
5250 toc adjusting stubs when calling functions defined there. */
5253 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5255 if ((sec
->flags
& SEC_CODE
) != 0
5256 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5257 && is_ppc64_elf (sec
->owner
))
5259 if (abiversion (sec
->owner
) >= 2
5260 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5261 sec
->has_toc_reloc
= 1;
5263 _bfd_elf_link_just_syms (sec
, info
);
5266 static struct plt_entry
**
5267 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5268 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5270 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5271 struct plt_entry
**local_plt
;
5272 unsigned char *local_got_tls_masks
;
5274 if (local_got_ents
== NULL
)
5276 bfd_size_type size
= symtab_hdr
->sh_info
;
5278 size
*= (sizeof (*local_got_ents
)
5279 + sizeof (*local_plt
)
5280 + sizeof (*local_got_tls_masks
));
5281 local_got_ents
= bfd_zalloc (abfd
, size
);
5282 if (local_got_ents
== NULL
)
5284 elf_local_got_ents (abfd
) = local_got_ents
;
5287 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5289 struct got_entry
*ent
;
5291 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5292 if (ent
->addend
== r_addend
5293 && ent
->owner
== abfd
5294 && ent
->tls_type
== tls_type
)
5298 bfd_size_type amt
= sizeof (*ent
);
5299 ent
= bfd_alloc (abfd
, amt
);
5302 ent
->next
= local_got_ents
[r_symndx
];
5303 ent
->addend
= r_addend
;
5305 ent
->tls_type
= tls_type
;
5306 ent
->is_indirect
= FALSE
;
5307 ent
->got
.refcount
= 0;
5308 local_got_ents
[r_symndx
] = ent
;
5310 ent
->got
.refcount
+= 1;
5313 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5314 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5315 local_got_tls_masks
[r_symndx
] |= tls_type
;
5317 return local_plt
+ r_symndx
;
5321 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5323 struct plt_entry
*ent
;
5325 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5326 if (ent
->addend
== addend
)
5330 bfd_size_type amt
= sizeof (*ent
);
5331 ent
= bfd_alloc (abfd
, amt
);
5335 ent
->addend
= addend
;
5336 ent
->plt
.refcount
= 0;
5339 ent
->plt
.refcount
+= 1;
5344 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5346 return (r_type
== R_PPC64_REL24
5347 || r_type
== R_PPC64_REL14
5348 || r_type
== R_PPC64_REL14_BRTAKEN
5349 || r_type
== R_PPC64_REL14_BRNTAKEN
5350 || r_type
== R_PPC64_ADDR24
5351 || r_type
== R_PPC64_ADDR14
5352 || r_type
== R_PPC64_ADDR14_BRTAKEN
5353 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5356 /* Look through the relocs for a section during the first phase, and
5357 calculate needed space in the global offset table, procedure
5358 linkage table, and dynamic reloc sections. */
5361 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5362 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5364 struct ppc_link_hash_table
*htab
;
5365 Elf_Internal_Shdr
*symtab_hdr
;
5366 struct elf_link_hash_entry
**sym_hashes
;
5367 const Elf_Internal_Rela
*rel
;
5368 const Elf_Internal_Rela
*rel_end
;
5370 asection
**opd_sym_map
;
5371 struct elf_link_hash_entry
*tga
, *dottga
;
5373 if (bfd_link_relocatable (info
))
5376 /* Don't do anything special with non-loaded, non-alloced sections.
5377 In particular, any relocs in such sections should not affect GOT
5378 and PLT reference counting (ie. we don't allow them to create GOT
5379 or PLT entries), there's no possibility or desire to optimize TLS
5380 relocs, and there's not much point in propagating relocs to shared
5381 libs that the dynamic linker won't relocate. */
5382 if ((sec
->flags
& SEC_ALLOC
) == 0)
5385 BFD_ASSERT (is_ppc64_elf (abfd
));
5387 htab
= ppc_hash_table (info
);
5391 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5392 FALSE
, FALSE
, TRUE
);
5393 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5394 FALSE
, FALSE
, TRUE
);
5395 symtab_hdr
= &elf_symtab_hdr (abfd
);
5396 sym_hashes
= elf_sym_hashes (abfd
);
5399 if (ppc64_elf_section_data (sec
) != NULL
5400 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5401 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5403 rel_end
= relocs
+ sec
->reloc_count
;
5404 for (rel
= relocs
; rel
< rel_end
; rel
++)
5406 unsigned long r_symndx
;
5407 struct elf_link_hash_entry
*h
;
5408 enum elf_ppc64_reloc_type r_type
;
5410 struct _ppc64_elf_section_data
*ppc64_sec
;
5411 struct plt_entry
**ifunc
, **plt_list
;
5413 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5414 if (r_symndx
< symtab_hdr
->sh_info
)
5418 struct ppc_link_hash_entry
*eh
;
5420 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5421 h
= elf_follow_link (h
);
5422 eh
= (struct ppc_link_hash_entry
*) h
;
5424 /* PR15323, ref flags aren't set for references in the same
5426 h
->root
.non_ir_ref
= 1;
5427 if (eh
->is_func
&& eh
->oh
!= NULL
)
5428 eh
->oh
->elf
.root
.non_ir_ref
= 1;
5430 if (h
== htab
->elf
.hgot
)
5431 sec
->has_toc_reloc
= 1;
5438 if (h
->type
== STT_GNU_IFUNC
)
5441 ifunc
= &h
->plt
.plist
;
5446 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5451 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5453 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5454 rel
->r_addend
, PLT_IFUNC
);
5460 r_type
= ELF64_R_TYPE (rel
->r_info
);
5465 /* These special tls relocs tie a call to __tls_get_addr with
5466 its parameter symbol. */
5469 case R_PPC64_GOT_TLSLD16
:
5470 case R_PPC64_GOT_TLSLD16_LO
:
5471 case R_PPC64_GOT_TLSLD16_HI
:
5472 case R_PPC64_GOT_TLSLD16_HA
:
5473 tls_type
= TLS_TLS
| TLS_LD
;
5476 case R_PPC64_GOT_TLSGD16
:
5477 case R_PPC64_GOT_TLSGD16_LO
:
5478 case R_PPC64_GOT_TLSGD16_HI
:
5479 case R_PPC64_GOT_TLSGD16_HA
:
5480 tls_type
= TLS_TLS
| TLS_GD
;
5483 case R_PPC64_GOT_TPREL16_DS
:
5484 case R_PPC64_GOT_TPREL16_LO_DS
:
5485 case R_PPC64_GOT_TPREL16_HI
:
5486 case R_PPC64_GOT_TPREL16_HA
:
5487 if (bfd_link_pic (info
))
5488 info
->flags
|= DF_STATIC_TLS
;
5489 tls_type
= TLS_TLS
| TLS_TPREL
;
5492 case R_PPC64_GOT_DTPREL16_DS
:
5493 case R_PPC64_GOT_DTPREL16_LO_DS
:
5494 case R_PPC64_GOT_DTPREL16_HI
:
5495 case R_PPC64_GOT_DTPREL16_HA
:
5496 tls_type
= TLS_TLS
| TLS_DTPREL
;
5498 sec
->has_tls_reloc
= 1;
5502 case R_PPC64_GOT16_DS
:
5503 case R_PPC64_GOT16_HA
:
5504 case R_PPC64_GOT16_HI
:
5505 case R_PPC64_GOT16_LO
:
5506 case R_PPC64_GOT16_LO_DS
:
5507 /* This symbol requires a global offset table entry. */
5508 sec
->has_toc_reloc
= 1;
5509 if (r_type
== R_PPC64_GOT_TLSLD16
5510 || r_type
== R_PPC64_GOT_TLSGD16
5511 || r_type
== R_PPC64_GOT_TPREL16_DS
5512 || r_type
== R_PPC64_GOT_DTPREL16_DS
5513 || r_type
== R_PPC64_GOT16
5514 || r_type
== R_PPC64_GOT16_DS
)
5516 htab
->do_multi_toc
= 1;
5517 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5520 if (ppc64_elf_tdata (abfd
)->got
== NULL
5521 && !create_got_section (abfd
, info
))
5526 struct ppc_link_hash_entry
*eh
;
5527 struct got_entry
*ent
;
5529 eh
= (struct ppc_link_hash_entry
*) h
;
5530 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5531 if (ent
->addend
== rel
->r_addend
5532 && ent
->owner
== abfd
5533 && ent
->tls_type
== tls_type
)
5537 bfd_size_type amt
= sizeof (*ent
);
5538 ent
= bfd_alloc (abfd
, amt
);
5541 ent
->next
= eh
->elf
.got
.glist
;
5542 ent
->addend
= rel
->r_addend
;
5544 ent
->tls_type
= tls_type
;
5545 ent
->is_indirect
= FALSE
;
5546 ent
->got
.refcount
= 0;
5547 eh
->elf
.got
.glist
= ent
;
5549 ent
->got
.refcount
+= 1;
5550 eh
->tls_mask
|= tls_type
;
5553 /* This is a global offset table entry for a local symbol. */
5554 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5555 rel
->r_addend
, tls_type
))
5558 /* We may also need a plt entry if the symbol turns out to be
5560 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5562 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5567 case R_PPC64_PLT16_HA
:
5568 case R_PPC64_PLT16_HI
:
5569 case R_PPC64_PLT16_LO
:
5572 /* This symbol requires a procedure linkage table entry. */
5577 if (h
->root
.root
.string
[0] == '.'
5578 && h
->root
.root
.string
[1] != '\0')
5579 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5580 plt_list
= &h
->plt
.plist
;
5582 if (plt_list
== NULL
)
5584 /* It does not make sense to have a procedure linkage
5585 table entry for a non-ifunc local symbol. */
5586 info
->callbacks
->einfo
5587 /* xgettext:c-format */
5588 (_("%H: %s reloc against local symbol\n"),
5589 abfd
, sec
, rel
->r_offset
,
5590 ppc64_elf_howto_table
[r_type
]->name
);
5591 bfd_set_error (bfd_error_bad_value
);
5594 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5598 /* The following relocations don't need to propagate the
5599 relocation if linking a shared object since they are
5600 section relative. */
5601 case R_PPC64_SECTOFF
:
5602 case R_PPC64_SECTOFF_LO
:
5603 case R_PPC64_SECTOFF_HI
:
5604 case R_PPC64_SECTOFF_HA
:
5605 case R_PPC64_SECTOFF_DS
:
5606 case R_PPC64_SECTOFF_LO_DS
:
5607 case R_PPC64_DTPREL16
:
5608 case R_PPC64_DTPREL16_LO
:
5609 case R_PPC64_DTPREL16_HI
:
5610 case R_PPC64_DTPREL16_HA
:
5611 case R_PPC64_DTPREL16_DS
:
5612 case R_PPC64_DTPREL16_LO_DS
:
5613 case R_PPC64_DTPREL16_HIGH
:
5614 case R_PPC64_DTPREL16_HIGHA
:
5615 case R_PPC64_DTPREL16_HIGHER
:
5616 case R_PPC64_DTPREL16_HIGHERA
:
5617 case R_PPC64_DTPREL16_HIGHEST
:
5618 case R_PPC64_DTPREL16_HIGHESTA
:
5623 case R_PPC64_REL16_LO
:
5624 case R_PPC64_REL16_HI
:
5625 case R_PPC64_REL16_HA
:
5626 case R_PPC64_REL16DX_HA
:
5629 /* Not supported as a dynamic relocation. */
5630 case R_PPC64_ADDR64_LOCAL
:
5631 if (bfd_link_pic (info
))
5633 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5635 /* xgettext:c-format */
5636 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5637 "in shared libraries and PIEs.\n"),
5638 abfd
, sec
, rel
->r_offset
,
5639 ppc64_elf_howto_table
[r_type
]->name
);
5640 bfd_set_error (bfd_error_bad_value
);
5646 case R_PPC64_TOC16_DS
:
5647 htab
->do_multi_toc
= 1;
5648 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5650 case R_PPC64_TOC16_LO
:
5651 case R_PPC64_TOC16_HI
:
5652 case R_PPC64_TOC16_HA
:
5653 case R_PPC64_TOC16_LO_DS
:
5654 sec
->has_toc_reloc
= 1;
5661 /* This relocation describes the C++ object vtable hierarchy.
5662 Reconstruct it for later use during GC. */
5663 case R_PPC64_GNU_VTINHERIT
:
5664 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5668 /* This relocation describes which C++ vtable entries are actually
5669 used. Record for later use during GC. */
5670 case R_PPC64_GNU_VTENTRY
:
5671 BFD_ASSERT (h
!= NULL
);
5673 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5678 case R_PPC64_REL14_BRTAKEN
:
5679 case R_PPC64_REL14_BRNTAKEN
:
5681 asection
*dest
= NULL
;
5683 /* Heuristic: If jumping outside our section, chances are
5684 we are going to need a stub. */
5687 /* If the sym is weak it may be overridden later, so
5688 don't assume we know where a weak sym lives. */
5689 if (h
->root
.type
== bfd_link_hash_defined
)
5690 dest
= h
->root
.u
.def
.section
;
5694 Elf_Internal_Sym
*isym
;
5696 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5701 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5705 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5714 if (h
->root
.root
.string
[0] == '.'
5715 && h
->root
.root
.string
[1] != '\0')
5716 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5718 if (h
== tga
|| h
== dottga
)
5720 sec
->has_tls_reloc
= 1;
5722 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5723 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5724 /* We have a new-style __tls_get_addr call with
5728 /* Mark this section as having an old-style call. */
5729 sec
->has_tls_get_addr_call
= 1;
5731 plt_list
= &h
->plt
.plist
;
5734 /* We may need a .plt entry if the function this reloc
5735 refers to is in a shared lib. */
5737 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5741 case R_PPC64_ADDR14
:
5742 case R_PPC64_ADDR14_BRNTAKEN
:
5743 case R_PPC64_ADDR14_BRTAKEN
:
5744 case R_PPC64_ADDR24
:
5747 case R_PPC64_TPREL64
:
5748 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5749 if (bfd_link_pic (info
))
5750 info
->flags
|= DF_STATIC_TLS
;
5753 case R_PPC64_DTPMOD64
:
5754 if (rel
+ 1 < rel_end
5755 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5756 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5757 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5759 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5762 case R_PPC64_DTPREL64
:
5763 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5765 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5766 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5767 /* This is the second reloc of a dtpmod, dtprel pair.
5768 Don't mark with TLS_DTPREL. */
5772 sec
->has_tls_reloc
= 1;
5775 struct ppc_link_hash_entry
*eh
;
5776 eh
= (struct ppc_link_hash_entry
*) h
;
5777 eh
->tls_mask
|= tls_type
;
5780 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5781 rel
->r_addend
, tls_type
))
5784 ppc64_sec
= ppc64_elf_section_data (sec
);
5785 if (ppc64_sec
->sec_type
!= sec_toc
)
5789 /* One extra to simplify get_tls_mask. */
5790 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5791 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5792 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5794 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5795 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5796 if (ppc64_sec
->u
.toc
.add
== NULL
)
5798 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5799 ppc64_sec
->sec_type
= sec_toc
;
5801 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5802 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5803 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5805 /* Mark the second slot of a GD or LD entry.
5806 -1 to indicate GD and -2 to indicate LD. */
5807 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5808 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5809 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5810 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5813 case R_PPC64_TPREL16
:
5814 case R_PPC64_TPREL16_LO
:
5815 case R_PPC64_TPREL16_HI
:
5816 case R_PPC64_TPREL16_HA
:
5817 case R_PPC64_TPREL16_DS
:
5818 case R_PPC64_TPREL16_LO_DS
:
5819 case R_PPC64_TPREL16_HIGH
:
5820 case R_PPC64_TPREL16_HIGHA
:
5821 case R_PPC64_TPREL16_HIGHER
:
5822 case R_PPC64_TPREL16_HIGHERA
:
5823 case R_PPC64_TPREL16_HIGHEST
:
5824 case R_PPC64_TPREL16_HIGHESTA
:
5825 if (bfd_link_pic (info
))
5827 info
->flags
|= DF_STATIC_TLS
;
5832 case R_PPC64_ADDR64
:
5833 if (opd_sym_map
!= NULL
5834 && rel
+ 1 < rel_end
5835 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5838 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5842 Elf_Internal_Sym
*isym
;
5844 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5849 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5850 if (s
!= NULL
&& s
!= sec
)
5851 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5856 case R_PPC64_ADDR16
:
5857 case R_PPC64_ADDR16_DS
:
5858 case R_PPC64_ADDR16_HA
:
5859 case R_PPC64_ADDR16_HI
:
5860 case R_PPC64_ADDR16_HIGH
:
5861 case R_PPC64_ADDR16_HIGHA
:
5862 case R_PPC64_ADDR16_HIGHER
:
5863 case R_PPC64_ADDR16_HIGHERA
:
5864 case R_PPC64_ADDR16_HIGHEST
:
5865 case R_PPC64_ADDR16_HIGHESTA
:
5866 case R_PPC64_ADDR16_LO
:
5867 case R_PPC64_ADDR16_LO_DS
:
5868 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5869 && rel
->r_addend
== 0)
5871 /* We may need a .plt entry if this reloc refers to a
5872 function in a shared lib. */
5873 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5875 h
->pointer_equality_needed
= 1;
5882 case R_PPC64_ADDR32
:
5883 case R_PPC64_UADDR16
:
5884 case R_PPC64_UADDR32
:
5885 case R_PPC64_UADDR64
:
5887 if (h
!= NULL
&& !bfd_link_pic (info
))
5888 /* We may need a copy reloc. */
5891 /* Don't propagate .opd relocs. */
5892 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5895 /* If we are creating a shared library, and this is a reloc
5896 against a global symbol, or a non PC relative reloc
5897 against a local symbol, then we need to copy the reloc
5898 into the shared library. However, if we are linking with
5899 -Bsymbolic, we do not need to copy a reloc against a
5900 global symbol which is defined in an object we are
5901 including in the link (i.e., DEF_REGULAR is set). At
5902 this point we have not seen all the input files, so it is
5903 possible that DEF_REGULAR is not set now but will be set
5904 later (it is never cleared). In case of a weak definition,
5905 DEF_REGULAR may be cleared later by a strong definition in
5906 a shared library. We account for that possibility below by
5907 storing information in the dyn_relocs field of the hash
5908 table entry. A similar situation occurs when creating
5909 shared libraries and symbol visibility changes render the
5912 If on the other hand, we are creating an executable, we
5913 may need to keep relocations for symbols satisfied by a
5914 dynamic library if we manage to avoid copy relocs for the
5917 if ((bfd_link_pic (info
)
5918 && (must_be_dyn_reloc (info
, r_type
)
5920 && (!SYMBOLIC_BIND (info
, h
)
5921 || h
->root
.type
== bfd_link_hash_defweak
5922 || !h
->def_regular
))))
5923 || (ELIMINATE_COPY_RELOCS
5924 && !bfd_link_pic (info
)
5926 && (h
->root
.type
== bfd_link_hash_defweak
5927 || !h
->def_regular
))
5928 || (!bfd_link_pic (info
)
5931 /* We must copy these reloc types into the output file.
5932 Create a reloc section in dynobj and make room for
5936 sreloc
= _bfd_elf_make_dynamic_reloc_section
5937 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5943 /* If this is a global symbol, we count the number of
5944 relocations we need for this symbol. */
5947 struct elf_dyn_relocs
*p
;
5948 struct elf_dyn_relocs
**head
;
5950 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5952 if (p
== NULL
|| p
->sec
!= sec
)
5954 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5964 if (!must_be_dyn_reloc (info
, r_type
))
5969 /* Track dynamic relocs needed for local syms too.
5970 We really need local syms available to do this
5972 struct ppc_dyn_relocs
*p
;
5973 struct ppc_dyn_relocs
**head
;
5974 bfd_boolean is_ifunc
;
5977 Elf_Internal_Sym
*isym
;
5979 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5984 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5988 vpp
= &elf_section_data (s
)->local_dynrel
;
5989 head
= (struct ppc_dyn_relocs
**) vpp
;
5990 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5992 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5994 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5996 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6002 p
->ifunc
= is_ifunc
;
6018 /* Merge backend specific data from an object file to the output
6019 object file when linking. */
6022 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6024 bfd
*obfd
= info
->output_bfd
;
6025 unsigned long iflags
, oflags
;
6027 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6030 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6033 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6036 iflags
= elf_elfheader (ibfd
)->e_flags
;
6037 oflags
= elf_elfheader (obfd
)->e_flags
;
6039 if (iflags
& ~EF_PPC64_ABI
)
6042 /* xgettext:c-format */
6043 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6044 bfd_set_error (bfd_error_bad_value
);
6047 else if (iflags
!= oflags
&& iflags
!= 0)
6050 /* xgettext:c-format */
6051 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6052 ibfd
, iflags
, oflags
);
6053 bfd_set_error (bfd_error_bad_value
);
6057 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6059 /* Merge Tag_compatibility attributes and any common GNU ones. */
6060 _bfd_elf_merge_object_attributes (ibfd
, info
);
6066 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6068 /* Print normal ELF private data. */
6069 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6071 if (elf_elfheader (abfd
)->e_flags
!= 0)
6075 fprintf (file
, _("private flags = 0x%lx:"),
6076 elf_elfheader (abfd
)->e_flags
);
6078 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6079 fprintf (file
, _(" [abiv%ld]"),
6080 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6087 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6088 of the code entry point, and its section, which must be in the same
6089 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6092 opd_entry_value (asection
*opd_sec
,
6094 asection
**code_sec
,
6096 bfd_boolean in_code_sec
)
6098 bfd
*opd_bfd
= opd_sec
->owner
;
6099 Elf_Internal_Rela
*relocs
;
6100 Elf_Internal_Rela
*lo
, *hi
, *look
;
6103 /* No relocs implies we are linking a --just-symbols object, or looking
6104 at a final linked executable with addr2line or somesuch. */
6105 if (opd_sec
->reloc_count
== 0)
6107 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6109 if (contents
== NULL
)
6111 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6112 return (bfd_vma
) -1;
6113 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6116 /* PR 17512: file: 64b9dfbb. */
6117 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6118 return (bfd_vma
) -1;
6120 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6121 if (code_sec
!= NULL
)
6123 asection
*sec
, *likely
= NULL
;
6129 && val
< sec
->vma
+ sec
->size
)
6135 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6137 && (sec
->flags
& SEC_LOAD
) != 0
6138 && (sec
->flags
& SEC_ALLOC
) != 0)
6143 if (code_off
!= NULL
)
6144 *code_off
= val
- likely
->vma
;
6150 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6152 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6154 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6155 /* PR 17512: file: df8e1fd6. */
6157 return (bfd_vma
) -1;
6159 /* Go find the opd reloc at the sym address. */
6161 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6165 look
= lo
+ (hi
- lo
) / 2;
6166 if (look
->r_offset
< offset
)
6168 else if (look
->r_offset
> offset
)
6172 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6174 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6175 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6177 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6178 asection
*sec
= NULL
;
6180 if (symndx
>= symtab_hdr
->sh_info
6181 && elf_sym_hashes (opd_bfd
) != NULL
)
6183 struct elf_link_hash_entry
**sym_hashes
;
6184 struct elf_link_hash_entry
*rh
;
6186 sym_hashes
= elf_sym_hashes (opd_bfd
);
6187 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6190 rh
= elf_follow_link (rh
);
6191 if (rh
->root
.type
!= bfd_link_hash_defined
6192 && rh
->root
.type
!= bfd_link_hash_defweak
)
6194 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6196 val
= rh
->root
.u
.def
.value
;
6197 sec
= rh
->root
.u
.def
.section
;
6204 Elf_Internal_Sym
*sym
;
6206 if (symndx
< symtab_hdr
->sh_info
)
6208 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6211 size_t symcnt
= symtab_hdr
->sh_info
;
6212 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6217 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6223 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6229 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6232 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6233 val
= sym
->st_value
;
6236 val
+= look
->r_addend
;
6237 if (code_off
!= NULL
)
6239 if (code_sec
!= NULL
)
6241 if (in_code_sec
&& *code_sec
!= sec
)
6246 if (sec
->output_section
!= NULL
)
6247 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6256 /* If the ELF symbol SYM might be a function in SEC, return the
6257 function size and set *CODE_OFF to the function's entry point,
6258 otherwise return zero. */
6260 static bfd_size_type
6261 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6266 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6267 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6271 if (!(sym
->flags
& BSF_SYNTHETIC
))
6272 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6274 if (strcmp (sym
->section
->name
, ".opd") == 0)
6276 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6277 bfd_vma symval
= sym
->value
;
6280 && opd
->adjust
!= NULL
6281 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6283 /* opd_entry_value will use cached relocs that have been
6284 adjusted, but with raw symbols. That means both local
6285 and global symbols need adjusting. */
6286 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6292 if (opd_entry_value (sym
->section
, symval
,
6293 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6295 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6296 symbol. This size has nothing to do with the code size of the
6297 function, which is what we're supposed to return, but the
6298 code size isn't available without looking up the dot-sym.
6299 However, doing that would be a waste of time particularly
6300 since elf_find_function will look at the dot-sym anyway.
6301 Now, elf_find_function will keep the largest size of any
6302 function sym found at the code address of interest, so return
6303 1 here to avoid it incorrectly caching a larger function size
6304 for a small function. This does mean we return the wrong
6305 size for a new-ABI function of size 24, but all that does is
6306 disable caching for such functions. */
6312 if (sym
->section
!= sec
)
6314 *code_off
= sym
->value
;
6321 /* Return true if symbol is defined in a regular object file. */
6324 is_static_defined (struct elf_link_hash_entry
*h
)
6326 return ((h
->root
.type
== bfd_link_hash_defined
6327 || h
->root
.type
== bfd_link_hash_defweak
)
6328 && h
->root
.u
.def
.section
!= NULL
6329 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6332 /* If FDH is a function descriptor symbol, return the associated code
6333 entry symbol if it is defined. Return NULL otherwise. */
6335 static struct ppc_link_hash_entry
*
6336 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6338 if (fdh
->is_func_descriptor
)
6340 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6341 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6342 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6348 /* If FH is a function code entry symbol, return the associated
6349 function descriptor symbol if it is defined. Return NULL otherwise. */
6351 static struct ppc_link_hash_entry
*
6352 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6355 && fh
->oh
->is_func_descriptor
)
6357 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6358 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6359 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6365 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6367 /* Garbage collect sections, after first dealing with dot-symbols. */
6370 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6372 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6374 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6376 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6377 htab
->need_func_desc_adj
= 0;
6379 return bfd_elf_gc_sections (abfd
, info
);
6382 /* Mark all our entry sym sections, both opd and code section. */
6385 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6387 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6388 struct bfd_sym_chain
*sym
;
6393 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6395 struct ppc_link_hash_entry
*eh
, *fh
;
6398 eh
= (struct ppc_link_hash_entry
*)
6399 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6402 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6403 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6406 fh
= defined_code_entry (eh
);
6409 sec
= fh
->elf
.root
.u
.def
.section
;
6410 sec
->flags
|= SEC_KEEP
;
6412 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6413 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6414 eh
->elf
.root
.u
.def
.value
,
6415 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6416 sec
->flags
|= SEC_KEEP
;
6418 sec
= eh
->elf
.root
.u
.def
.section
;
6419 sec
->flags
|= SEC_KEEP
;
6423 /* Mark sections containing dynamically referenced symbols. When
6424 building shared libraries, we must assume that any visible symbol is
6428 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6430 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6431 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6432 struct ppc_link_hash_entry
*fdh
;
6433 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6435 /* Dynamic linking info is on the func descriptor sym. */
6436 fdh
= defined_func_desc (eh
);
6440 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6441 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6442 && (eh
->elf
.ref_dynamic
6443 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6444 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6445 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6446 && (!bfd_link_executable (info
)
6447 || info
->gc_keep_exported
6448 || info
->export_dynamic
6451 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6452 && (eh
->elf
.versioned
>= versioned
6453 || !bfd_hide_sym_by_version (info
->version_info
,
6454 eh
->elf
.root
.root
.string
)))))
6457 struct ppc_link_hash_entry
*fh
;
6459 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6461 /* Function descriptor syms cause the associated
6462 function code sym section to be marked. */
6463 fh
= defined_code_entry (eh
);
6466 code_sec
= fh
->elf
.root
.u
.def
.section
;
6467 code_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 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6473 code_sec
->flags
|= SEC_KEEP
;
6479 /* Return the section that should be marked against GC for a given
6483 ppc64_elf_gc_mark_hook (asection
*sec
,
6484 struct bfd_link_info
*info
,
6485 Elf_Internal_Rela
*rel
,
6486 struct elf_link_hash_entry
*h
,
6487 Elf_Internal_Sym
*sym
)
6491 /* Syms return NULL if we're marking .opd, so we avoid marking all
6492 function sections, as all functions are referenced in .opd. */
6494 if (get_opd_info (sec
) != NULL
)
6499 enum elf_ppc64_reloc_type r_type
;
6500 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6502 r_type
= ELF64_R_TYPE (rel
->r_info
);
6505 case R_PPC64_GNU_VTINHERIT
:
6506 case R_PPC64_GNU_VTENTRY
:
6510 switch (h
->root
.type
)
6512 case bfd_link_hash_defined
:
6513 case bfd_link_hash_defweak
:
6514 eh
= (struct ppc_link_hash_entry
*) h
;
6515 fdh
= defined_func_desc (eh
);
6518 /* -mcall-aixdesc code references the dot-symbol on
6519 a call reloc. Mark the function descriptor too
6520 against garbage collection. */
6522 if (fdh
->elf
.u
.weakdef
!= NULL
)
6523 fdh
->elf
.u
.weakdef
->mark
= 1;
6527 /* Function descriptor syms cause the associated
6528 function code sym section to be marked. */
6529 fh
= defined_code_entry (eh
);
6532 /* They also mark their opd section. */
6533 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6535 rsec
= fh
->elf
.root
.u
.def
.section
;
6537 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6538 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6539 eh
->elf
.root
.u
.def
.value
,
6540 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6541 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6543 rsec
= h
->root
.u
.def
.section
;
6546 case bfd_link_hash_common
:
6547 rsec
= h
->root
.u
.c
.p
->section
;
6551 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6557 struct _opd_sec_data
*opd
;
6559 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6560 opd
= get_opd_info (rsec
);
6561 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6565 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6572 /* Update the .got, .plt. and dynamic reloc reference counts for the
6573 section being removed. */
6576 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6577 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6579 struct ppc_link_hash_table
*htab
;
6580 Elf_Internal_Shdr
*symtab_hdr
;
6581 struct elf_link_hash_entry
**sym_hashes
;
6582 struct got_entry
**local_got_ents
;
6583 const Elf_Internal_Rela
*rel
, *relend
;
6585 if (bfd_link_relocatable (info
))
6588 if ((sec
->flags
& SEC_ALLOC
) == 0)
6591 elf_section_data (sec
)->local_dynrel
= NULL
;
6593 htab
= ppc_hash_table (info
);
6597 symtab_hdr
= &elf_symtab_hdr (abfd
);
6598 sym_hashes
= elf_sym_hashes (abfd
);
6599 local_got_ents
= elf_local_got_ents (abfd
);
6601 relend
= relocs
+ sec
->reloc_count
;
6602 for (rel
= relocs
; rel
< relend
; rel
++)
6604 unsigned long r_symndx
;
6605 enum elf_ppc64_reloc_type r_type
;
6606 struct elf_link_hash_entry
*h
= NULL
;
6607 struct plt_entry
**plt_list
= NULL
;
6608 unsigned char tls_type
= 0;
6610 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6611 r_type
= ELF64_R_TYPE (rel
->r_info
);
6612 if (r_symndx
>= symtab_hdr
->sh_info
)
6614 struct ppc_link_hash_entry
*eh
;
6615 struct elf_dyn_relocs
**pp
;
6616 struct elf_dyn_relocs
*p
;
6618 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6619 h
= elf_follow_link (h
);
6620 eh
= (struct ppc_link_hash_entry
*) h
;
6622 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6625 /* Everything must go for SEC. */
6633 case R_PPC64_GOT_TLSLD16
:
6634 case R_PPC64_GOT_TLSLD16_LO
:
6635 case R_PPC64_GOT_TLSLD16_HI
:
6636 case R_PPC64_GOT_TLSLD16_HA
:
6637 tls_type
= TLS_TLS
| TLS_LD
;
6640 case R_PPC64_GOT_TLSGD16
:
6641 case R_PPC64_GOT_TLSGD16_LO
:
6642 case R_PPC64_GOT_TLSGD16_HI
:
6643 case R_PPC64_GOT_TLSGD16_HA
:
6644 tls_type
= TLS_TLS
| TLS_GD
;
6647 case R_PPC64_GOT_TPREL16_DS
:
6648 case R_PPC64_GOT_TPREL16_LO_DS
:
6649 case R_PPC64_GOT_TPREL16_HI
:
6650 case R_PPC64_GOT_TPREL16_HA
:
6651 tls_type
= TLS_TLS
| TLS_TPREL
;
6654 case R_PPC64_GOT_DTPREL16_DS
:
6655 case R_PPC64_GOT_DTPREL16_LO_DS
:
6656 case R_PPC64_GOT_DTPREL16_HI
:
6657 case R_PPC64_GOT_DTPREL16_HA
:
6658 tls_type
= TLS_TLS
| TLS_DTPREL
;
6662 case R_PPC64_GOT16_DS
:
6663 case R_PPC64_GOT16_HA
:
6664 case R_PPC64_GOT16_HI
:
6665 case R_PPC64_GOT16_LO
:
6666 case R_PPC64_GOT16_LO_DS
:
6669 struct got_entry
*ent
;
6674 ent
= local_got_ents
[r_symndx
];
6676 for (; ent
!= NULL
; ent
= ent
->next
)
6677 if (ent
->addend
== rel
->r_addend
6678 && ent
->owner
== abfd
6679 && ent
->tls_type
== tls_type
)
6683 if (ent
->got
.refcount
> 0)
6684 ent
->got
.refcount
-= 1;
6686 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
6687 plt_list
= &h
->plt
.plist
;
6690 case R_PPC64_PLT16_HA
:
6691 case R_PPC64_PLT16_HI
:
6692 case R_PPC64_PLT16_LO
:
6696 case R_PPC64_REL14_BRNTAKEN
:
6697 case R_PPC64_REL14_BRTAKEN
:
6700 plt_list
= &h
->plt
.plist
;
6701 else if (local_got_ents
!= NULL
)
6703 struct plt_entry
**local_plt
= (struct plt_entry
**)
6704 (local_got_ents
+ symtab_hdr
->sh_info
);
6705 unsigned char *local_got_tls_masks
= (unsigned char *)
6706 (local_plt
+ symtab_hdr
->sh_info
);
6707 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6708 plt_list
= local_plt
+ r_symndx
;
6712 case R_PPC64_ADDR64
:
6713 case R_PPC64_ADDR16
:
6714 case R_PPC64_ADDR16_DS
:
6715 case R_PPC64_ADDR16_HA
:
6716 case R_PPC64_ADDR16_HI
:
6717 case R_PPC64_ADDR16_HIGH
:
6718 case R_PPC64_ADDR16_HIGHA
:
6719 case R_PPC64_ADDR16_HIGHER
:
6720 case R_PPC64_ADDR16_HIGHERA
:
6721 case R_PPC64_ADDR16_HIGHEST
:
6722 case R_PPC64_ADDR16_HIGHESTA
:
6723 case R_PPC64_ADDR16_LO
:
6724 case R_PPC64_ADDR16_LO_DS
:
6725 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
6726 && rel
->r_addend
== 0)
6727 plt_list
= &h
->plt
.plist
;
6733 if (plt_list
!= NULL
)
6735 struct plt_entry
*ent
;
6737 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6738 if (ent
->addend
== rel
->r_addend
)
6740 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6741 ent
->plt
.refcount
-= 1;
6747 /* The maximum size of .sfpr. */
6748 #define SFPR_MAX (218*4)
6750 struct sfpr_def_parms
6752 const char name
[12];
6753 unsigned char lo
, hi
;
6754 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6755 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6758 /* Auto-generate _save*, _rest* functions in .sfpr.
6759 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6763 sfpr_define (struct bfd_link_info
*info
,
6764 const struct sfpr_def_parms
*parm
,
6767 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6769 size_t len
= strlen (parm
->name
);
6770 bfd_boolean writing
= FALSE
;
6776 memcpy (sym
, parm
->name
, len
);
6779 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6781 struct ppc_link_hash_entry
*h
;
6783 sym
[len
+ 0] = i
/ 10 + '0';
6784 sym
[len
+ 1] = i
% 10 + '0';
6785 h
= (struct ppc_link_hash_entry
*)
6786 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6787 if (stub_sec
!= NULL
)
6790 && h
->elf
.root
.type
== bfd_link_hash_defined
6791 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6793 struct elf_link_hash_entry
*s
;
6795 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6796 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6799 if (s
->root
.type
== bfd_link_hash_new
6800 || (s
->root
.type
= bfd_link_hash_defined
6801 && s
->root
.u
.def
.section
== stub_sec
))
6803 s
->root
.type
= bfd_link_hash_defined
;
6804 s
->root
.u
.def
.section
= stub_sec
;
6805 s
->root
.u
.def
.value
= (stub_sec
->size
6806 + h
->elf
.root
.u
.def
.value
);
6809 s
->ref_regular_nonweak
= 1;
6810 s
->forced_local
= 1;
6812 s
->root
.linker_def
= 1;
6820 if (!h
->elf
.def_regular
)
6822 h
->elf
.root
.type
= bfd_link_hash_defined
;
6823 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6824 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6825 h
->elf
.type
= STT_FUNC
;
6826 h
->elf
.def_regular
= 1;
6828 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6830 if (htab
->sfpr
->contents
== NULL
)
6832 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6833 if (htab
->sfpr
->contents
== NULL
)
6840 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6842 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6844 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6845 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6853 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6855 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6860 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6862 p
= savegpr0 (abfd
, p
, r
);
6863 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6865 bfd_put_32 (abfd
, BLR
, p
);
6870 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6872 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6877 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6879 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6881 p
= restgpr0 (abfd
, p
, r
);
6882 bfd_put_32 (abfd
, MTLR_R0
, p
);
6886 p
= restgpr0 (abfd
, p
, 30);
6887 p
= restgpr0 (abfd
, p
, 31);
6889 bfd_put_32 (abfd
, BLR
, p
);
6894 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6896 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6901 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6903 p
= savegpr1 (abfd
, p
, r
);
6904 bfd_put_32 (abfd
, BLR
, p
);
6909 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6911 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6916 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6918 p
= restgpr1 (abfd
, p
, r
);
6919 bfd_put_32 (abfd
, BLR
, p
);
6924 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6926 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6931 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6933 p
= savefpr (abfd
, p
, r
);
6934 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6936 bfd_put_32 (abfd
, BLR
, p
);
6941 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6943 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6948 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6950 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6952 p
= restfpr (abfd
, p
, r
);
6953 bfd_put_32 (abfd
, MTLR_R0
, p
);
6957 p
= restfpr (abfd
, p
, 30);
6958 p
= restfpr (abfd
, p
, 31);
6960 bfd_put_32 (abfd
, BLR
, p
);
6965 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6967 p
= savefpr (abfd
, p
, r
);
6968 bfd_put_32 (abfd
, BLR
, p
);
6973 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6975 p
= restfpr (abfd
, p
, r
);
6976 bfd_put_32 (abfd
, BLR
, p
);
6981 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6983 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6985 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6990 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6992 p
= savevr (abfd
, p
, r
);
6993 bfd_put_32 (abfd
, BLR
, p
);
6998 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
7000 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7002 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
7007 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7009 p
= restvr (abfd
, p
, r
);
7010 bfd_put_32 (abfd
, BLR
, p
);
7014 /* Called via elf_link_hash_traverse to transfer dynamic linking
7015 information on function code symbol entries to their corresponding
7016 function descriptor symbol entries. */
7019 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
7021 struct bfd_link_info
*info
;
7022 struct ppc_link_hash_table
*htab
;
7023 struct ppc_link_hash_entry
*fh
;
7024 struct ppc_link_hash_entry
*fdh
;
7025 bfd_boolean force_local
;
7027 fh
= (struct ppc_link_hash_entry
*) h
;
7028 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
7034 if (fh
->elf
.root
.root
.string
[0] != '.'
7035 || fh
->elf
.root
.root
.string
[1] == '\0')
7039 htab
= ppc_hash_table (info
);
7043 /* Find the corresponding function descriptor symbol. */
7044 fdh
= lookup_fdh (fh
, htab
);
7046 /* Resolve undefined references to dot-symbols as the value
7047 in the function descriptor, if we have one in a regular object.
7048 This is to satisfy cases like ".quad .foo". Calls to functions
7049 in dynamic objects are handled elsewhere. */
7050 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7051 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7052 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7053 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7054 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7055 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7056 fdh
->elf
.root
.u
.def
.value
,
7057 &fh
->elf
.root
.u
.def
.section
,
7058 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7060 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7061 fh
->elf
.forced_local
= 1;
7062 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7063 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7066 if (!fh
->elf
.dynamic
)
7068 struct plt_entry
*ent
;
7070 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7071 if (ent
->plt
.refcount
> 0)
7077 /* Create a descriptor as undefined if necessary. */
7079 && !bfd_link_executable (info
)
7080 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7081 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7083 fdh
= make_fdh (info
, fh
);
7088 /* We can't support overriding of symbols on a fake descriptor. */
7091 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7092 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7093 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7095 /* Transfer dynamic linking information to the function descriptor. */
7098 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7099 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7100 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7101 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7102 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7103 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7104 || fh
->elf
.type
== STT_FUNC
7105 || fh
->elf
.type
== STT_GNU_IFUNC
);
7106 move_plt_plist (fh
, fdh
);
7108 if (!fdh
->elf
.forced_local
7109 && fh
->elf
.dynindx
!= -1)
7110 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7114 /* Now that the info is on the function descriptor, clear the
7115 function code sym info. Any function code syms for which we
7116 don't have a definition in a regular file, we force local.
7117 This prevents a shared library from exporting syms that have
7118 been imported from another library. Function code syms that
7119 are really in the library we must leave global to prevent the
7120 linker dragging in a definition from a static library. */
7121 force_local
= (!fh
->elf
.def_regular
7123 || !fdh
->elf
.def_regular
7124 || fdh
->elf
.forced_local
);
7125 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7130 static const struct sfpr_def_parms save_res_funcs
[] =
7132 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7133 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7134 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7135 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7136 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7137 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7138 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7139 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7140 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7141 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7142 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7143 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7146 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7147 this hook to a) provide some gcc support functions, and b) transfer
7148 dynamic linking information gathered so far on function code symbol
7149 entries, to their corresponding function descriptor symbol entries. */
7152 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7153 struct bfd_link_info
*info
)
7155 struct ppc_link_hash_table
*htab
;
7157 htab
= ppc_hash_table (info
);
7161 /* Provide any missing _save* and _rest* functions. */
7162 if (htab
->sfpr
!= NULL
)
7166 htab
->sfpr
->size
= 0;
7167 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7168 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7170 if (htab
->sfpr
->size
== 0)
7171 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7174 if (bfd_link_relocatable (info
))
7177 if (htab
->elf
.hgot
!= NULL
)
7179 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7180 /* Make .TOC. defined so as to prevent it being made dynamic.
7181 The wrong value here is fixed later in ppc64_elf_set_toc. */
7182 if (!htab
->elf
.hgot
->def_regular
7183 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7185 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7186 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7187 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7188 htab
->elf
.hgot
->def_regular
= 1;
7189 htab
->elf
.hgot
->root
.linker_def
= 1;
7191 htab
->elf
.hgot
->type
= STT_OBJECT
;
7192 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7196 if (htab
->need_func_desc_adj
)
7198 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7199 htab
->need_func_desc_adj
= 0;
7205 /* Return true if we have dynamic relocs against H that apply to
7206 read-only sections. */
7209 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7211 struct ppc_link_hash_entry
*eh
;
7212 struct elf_dyn_relocs
*p
;
7214 eh
= (struct ppc_link_hash_entry
*) h
;
7215 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7217 asection
*s
= p
->sec
->output_section
;
7219 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7225 /* Return true if we have dynamic relocs against H or any of its weak
7226 aliases, that apply to read-only sections. */
7229 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7231 struct ppc_link_hash_entry
*eh
;
7233 eh
= (struct ppc_link_hash_entry
*) h
;
7236 if (readonly_dynrelocs (&eh
->elf
))
7239 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7244 /* Return whether EH has pc-relative dynamic relocs. */
7247 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7249 struct elf_dyn_relocs
*p
;
7251 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7252 if (p
->pc_count
!= 0)
7257 /* Return true if a global entry stub will be created for H. Valid
7258 for ELFv2 before plt entries have been allocated. */
7261 global_entry_stub (struct elf_link_hash_entry
*h
)
7263 struct plt_entry
*pent
;
7265 if (!h
->pointer_equality_needed
7269 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7270 if (pent
->plt
.refcount
> 0
7271 && pent
->addend
== 0)
7277 /* Adjust a symbol defined by a dynamic object and referenced by a
7278 regular object. The current definition is in some section of the
7279 dynamic object, but we're not including those sections. We have to
7280 change the definition to something the rest of the link can
7284 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7285 struct elf_link_hash_entry
*h
)
7287 struct ppc_link_hash_table
*htab
;
7290 htab
= ppc_hash_table (info
);
7294 /* Deal with function syms. */
7295 if (h
->type
== STT_FUNC
7296 || h
->type
== STT_GNU_IFUNC
7299 /* Clear procedure linkage table information for any symbol that
7300 won't need a .plt entry. */
7301 struct plt_entry
*ent
;
7302 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7303 if (ent
->plt
.refcount
> 0)
7306 || (h
->type
!= STT_GNU_IFUNC
7307 && (SYMBOL_CALLS_LOCAL (info
, h
)
7308 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
7309 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7311 h
->plt
.plist
= NULL
;
7313 h
->pointer_equality_needed
= 0;
7315 else if (abiversion (info
->output_bfd
) >= 2)
7317 /* Taking a function's address in a read/write section
7318 doesn't require us to define the function symbol in the
7319 executable on a global entry stub. A dynamic reloc can
7320 be used instead. The reason we prefer a few more dynamic
7321 relocs is that calling via a global entry stub costs a
7322 few more instructions, and pointer_equality_needed causes
7323 extra work in ld.so when resolving these symbols. */
7324 if (global_entry_stub (h
)
7325 && !alias_readonly_dynrelocs (h
))
7327 h
->pointer_equality_needed
= 0;
7328 /* After adjust_dynamic_symbol, non_got_ref set in
7329 the non-pic case means that dyn_relocs for this
7330 symbol should be discarded. */
7334 /* If making a plt entry, then we don't need copy relocs. */
7339 h
->plt
.plist
= NULL
;
7341 /* If this is a weak symbol, and there is a real definition, the
7342 processor independent code will have arranged for us to see the
7343 real definition first, and we can just use the same value. */
7344 if (h
->u
.weakdef
!= NULL
)
7346 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7347 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7348 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7349 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7350 if (ELIMINATE_COPY_RELOCS
)
7351 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7355 /* If we are creating a shared library, we must presume that the
7356 only references to the symbol are via the global offset table.
7357 For such cases we need not do anything here; the relocations will
7358 be handled correctly by relocate_section. */
7359 if (bfd_link_pic (info
))
7362 /* If there are no references to this symbol that do not use the
7363 GOT, we don't need to generate a copy reloc. */
7364 if (!h
->non_got_ref
)
7367 /* Don't generate a copy reloc for symbols defined in the executable. */
7368 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7370 /* If -z nocopyreloc was given, don't generate them either. */
7371 || info
->nocopyreloc
7373 /* If we didn't find any dynamic relocs in read-only sections, then
7374 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7375 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7377 /* Protected variables do not work with .dynbss. The copy in
7378 .dynbss won't be used by the shared library with the protected
7379 definition for the variable. Text relocations are preferable
7380 to an incorrect program. */
7381 || h
->protected_def
)
7387 if (h
->plt
.plist
!= NULL
)
7389 /* We should never get here, but unfortunately there are versions
7390 of gcc out there that improperly (for this ABI) put initialized
7391 function pointers, vtable refs and suchlike in read-only
7392 sections. Allow them to proceed, but warn that this might
7393 break at runtime. */
7394 info
->callbacks
->einfo
7395 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7396 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7397 h
->root
.root
.string
);
7400 /* This is a reference to a symbol defined by a dynamic object which
7401 is not a function. */
7403 /* We must allocate the symbol in our .dynbss section, which will
7404 become part of the .bss section of the executable. There will be
7405 an entry for this symbol in the .dynsym section. The dynamic
7406 object will contain position independent code, so all references
7407 from the dynamic object to this symbol will go through the global
7408 offset table. The dynamic linker will use the .dynsym entry to
7409 determine the address it must put in the global offset table, so
7410 both the dynamic object and the regular object will refer to the
7411 same memory location for the variable. */
7413 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7414 to copy the initial value out of the dynamic object and into the
7415 runtime process image. We need to remember the offset into the
7416 .rela.bss section we are going to use. */
7417 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7419 s
= htab
->elf
.sdynrelro
;
7420 srel
= htab
->elf
.sreldynrelro
;
7424 s
= htab
->elf
.sdynbss
;
7425 srel
= htab
->elf
.srelbss
;
7427 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7429 srel
->size
+= sizeof (Elf64_External_Rela
);
7433 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7436 /* If given a function descriptor symbol, hide both the function code
7437 sym and the descriptor. */
7439 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7440 struct elf_link_hash_entry
*h
,
7441 bfd_boolean force_local
)
7443 struct ppc_link_hash_entry
*eh
;
7444 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7446 eh
= (struct ppc_link_hash_entry
*) h
;
7447 if (eh
->is_func_descriptor
)
7449 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7454 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7457 /* We aren't supposed to use alloca in BFD because on
7458 systems which do not have alloca the version in libiberty
7459 calls xmalloc, which might cause the program to crash
7460 when it runs out of memory. This function doesn't have a
7461 return status, so there's no way to gracefully return an
7462 error. So cheat. We know that string[-1] can be safely
7463 accessed; It's either a string in an ELF string table,
7464 or allocated in an objalloc structure. */
7466 p
= eh
->elf
.root
.root
.string
- 1;
7469 fh
= (struct ppc_link_hash_entry
*)
7470 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7473 /* Unfortunately, if it so happens that the string we were
7474 looking for was allocated immediately before this string,
7475 then we overwrote the string terminator. That's the only
7476 reason the lookup should fail. */
7479 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7480 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7482 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7483 fh
= (struct ppc_link_hash_entry
*)
7484 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7493 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7498 get_sym_h (struct elf_link_hash_entry
**hp
,
7499 Elf_Internal_Sym
**symp
,
7501 unsigned char **tls_maskp
,
7502 Elf_Internal_Sym
**locsymsp
,
7503 unsigned long r_symndx
,
7506 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7508 if (r_symndx
>= symtab_hdr
->sh_info
)
7510 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7511 struct elf_link_hash_entry
*h
;
7513 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7514 h
= elf_follow_link (h
);
7522 if (symsecp
!= NULL
)
7524 asection
*symsec
= NULL
;
7525 if (h
->root
.type
== bfd_link_hash_defined
7526 || h
->root
.type
== bfd_link_hash_defweak
)
7527 symsec
= h
->root
.u
.def
.section
;
7531 if (tls_maskp
!= NULL
)
7533 struct ppc_link_hash_entry
*eh
;
7535 eh
= (struct ppc_link_hash_entry
*) h
;
7536 *tls_maskp
= &eh
->tls_mask
;
7541 Elf_Internal_Sym
*sym
;
7542 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7544 if (locsyms
== NULL
)
7546 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7547 if (locsyms
== NULL
)
7548 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7549 symtab_hdr
->sh_info
,
7550 0, NULL
, NULL
, NULL
);
7551 if (locsyms
== NULL
)
7553 *locsymsp
= locsyms
;
7555 sym
= locsyms
+ r_symndx
;
7563 if (symsecp
!= NULL
)
7564 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7566 if (tls_maskp
!= NULL
)
7568 struct got_entry
**lgot_ents
;
7569 unsigned char *tls_mask
;
7572 lgot_ents
= elf_local_got_ents (ibfd
);
7573 if (lgot_ents
!= NULL
)
7575 struct plt_entry
**local_plt
= (struct plt_entry
**)
7576 (lgot_ents
+ symtab_hdr
->sh_info
);
7577 unsigned char *lgot_masks
= (unsigned char *)
7578 (local_plt
+ symtab_hdr
->sh_info
);
7579 tls_mask
= &lgot_masks
[r_symndx
];
7581 *tls_maskp
= tls_mask
;
7587 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7588 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7589 type suitable for optimization, and 1 otherwise. */
7592 get_tls_mask (unsigned char **tls_maskp
,
7593 unsigned long *toc_symndx
,
7594 bfd_vma
*toc_addend
,
7595 Elf_Internal_Sym
**locsymsp
,
7596 const Elf_Internal_Rela
*rel
,
7599 unsigned long r_symndx
;
7601 struct elf_link_hash_entry
*h
;
7602 Elf_Internal_Sym
*sym
;
7606 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7607 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7610 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7612 || ppc64_elf_section_data (sec
) == NULL
7613 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7616 /* Look inside a TOC section too. */
7619 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7620 off
= h
->root
.u
.def
.value
;
7623 off
= sym
->st_value
;
7624 off
+= rel
->r_addend
;
7625 BFD_ASSERT (off
% 8 == 0);
7626 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7627 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7628 if (toc_symndx
!= NULL
)
7629 *toc_symndx
= r_symndx
;
7630 if (toc_addend
!= NULL
)
7631 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7632 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7634 if ((h
== NULL
|| is_static_defined (h
))
7635 && (next_r
== -1 || next_r
== -2))
7640 /* Find (or create) an entry in the tocsave hash table. */
7642 static struct tocsave_entry
*
7643 tocsave_find (struct ppc_link_hash_table
*htab
,
7644 enum insert_option insert
,
7645 Elf_Internal_Sym
**local_syms
,
7646 const Elf_Internal_Rela
*irela
,
7649 unsigned long r_indx
;
7650 struct elf_link_hash_entry
*h
;
7651 Elf_Internal_Sym
*sym
;
7652 struct tocsave_entry ent
, *p
;
7654 struct tocsave_entry
**slot
;
7656 r_indx
= ELF64_R_SYM (irela
->r_info
);
7657 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7659 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7662 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7667 ent
.offset
= h
->root
.u
.def
.value
;
7669 ent
.offset
= sym
->st_value
;
7670 ent
.offset
+= irela
->r_addend
;
7672 hash
= tocsave_htab_hash (&ent
);
7673 slot
= ((struct tocsave_entry
**)
7674 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7680 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7689 /* Adjust all global syms defined in opd sections. In gcc generated
7690 code for the old ABI, these will already have been done. */
7693 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7695 struct ppc_link_hash_entry
*eh
;
7697 struct _opd_sec_data
*opd
;
7699 if (h
->root
.type
== bfd_link_hash_indirect
)
7702 if (h
->root
.type
!= bfd_link_hash_defined
7703 && h
->root
.type
!= bfd_link_hash_defweak
)
7706 eh
= (struct ppc_link_hash_entry
*) h
;
7707 if (eh
->adjust_done
)
7710 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7711 opd
= get_opd_info (sym_sec
);
7712 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7714 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7717 /* This entry has been deleted. */
7718 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7721 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7722 if (discarded_section (dsec
))
7724 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7728 eh
->elf
.root
.u
.def
.value
= 0;
7729 eh
->elf
.root
.u
.def
.section
= dsec
;
7732 eh
->elf
.root
.u
.def
.value
+= adjust
;
7733 eh
->adjust_done
= 1;
7738 /* Handles decrementing dynamic reloc counts for the reloc specified by
7739 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7740 have already been determined. */
7743 dec_dynrel_count (bfd_vma r_info
,
7745 struct bfd_link_info
*info
,
7746 Elf_Internal_Sym
**local_syms
,
7747 struct elf_link_hash_entry
*h
,
7748 Elf_Internal_Sym
*sym
)
7750 enum elf_ppc64_reloc_type r_type
;
7751 asection
*sym_sec
= NULL
;
7753 /* Can this reloc be dynamic? This switch, and later tests here
7754 should be kept in sync with the code in check_relocs. */
7755 r_type
= ELF64_R_TYPE (r_info
);
7761 case R_PPC64_TPREL16
:
7762 case R_PPC64_TPREL16_LO
:
7763 case R_PPC64_TPREL16_HI
:
7764 case R_PPC64_TPREL16_HA
:
7765 case R_PPC64_TPREL16_DS
:
7766 case R_PPC64_TPREL16_LO_DS
:
7767 case R_PPC64_TPREL16_HIGH
:
7768 case R_PPC64_TPREL16_HIGHA
:
7769 case R_PPC64_TPREL16_HIGHER
:
7770 case R_PPC64_TPREL16_HIGHERA
:
7771 case R_PPC64_TPREL16_HIGHEST
:
7772 case R_PPC64_TPREL16_HIGHESTA
:
7773 if (!bfd_link_pic (info
))
7776 case R_PPC64_TPREL64
:
7777 case R_PPC64_DTPMOD64
:
7778 case R_PPC64_DTPREL64
:
7779 case R_PPC64_ADDR64
:
7783 case R_PPC64_ADDR14
:
7784 case R_PPC64_ADDR14_BRNTAKEN
:
7785 case R_PPC64_ADDR14_BRTAKEN
:
7786 case R_PPC64_ADDR16
:
7787 case R_PPC64_ADDR16_DS
:
7788 case R_PPC64_ADDR16_HA
:
7789 case R_PPC64_ADDR16_HI
:
7790 case R_PPC64_ADDR16_HIGH
:
7791 case R_PPC64_ADDR16_HIGHA
:
7792 case R_PPC64_ADDR16_HIGHER
:
7793 case R_PPC64_ADDR16_HIGHERA
:
7794 case R_PPC64_ADDR16_HIGHEST
:
7795 case R_PPC64_ADDR16_HIGHESTA
:
7796 case R_PPC64_ADDR16_LO
:
7797 case R_PPC64_ADDR16_LO_DS
:
7798 case R_PPC64_ADDR24
:
7799 case R_PPC64_ADDR32
:
7800 case R_PPC64_UADDR16
:
7801 case R_PPC64_UADDR32
:
7802 case R_PPC64_UADDR64
:
7807 if (local_syms
!= NULL
)
7809 unsigned long r_symndx
;
7810 bfd
*ibfd
= sec
->owner
;
7812 r_symndx
= ELF64_R_SYM (r_info
);
7813 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7817 if ((bfd_link_pic (info
)
7818 && (must_be_dyn_reloc (info
, r_type
)
7820 && (!SYMBOLIC_BIND (info
, h
)
7821 || h
->root
.type
== bfd_link_hash_defweak
7822 || !h
->def_regular
))))
7823 || (ELIMINATE_COPY_RELOCS
7824 && !bfd_link_pic (info
)
7826 && (h
->root
.type
== bfd_link_hash_defweak
7827 || !h
->def_regular
)))
7834 struct elf_dyn_relocs
*p
;
7835 struct elf_dyn_relocs
**pp
;
7836 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7838 /* elf_gc_sweep may have already removed all dyn relocs associated
7839 with local syms for a given section. Also, symbol flags are
7840 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7841 report a dynreloc miscount. */
7842 if (*pp
== NULL
&& info
->gc_sections
)
7845 while ((p
= *pp
) != NULL
)
7849 if (!must_be_dyn_reloc (info
, r_type
))
7861 struct ppc_dyn_relocs
*p
;
7862 struct ppc_dyn_relocs
**pp
;
7864 bfd_boolean is_ifunc
;
7866 if (local_syms
== NULL
)
7867 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7868 if (sym_sec
== NULL
)
7871 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7872 pp
= (struct ppc_dyn_relocs
**) vpp
;
7874 if (*pp
== NULL
&& info
->gc_sections
)
7877 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7878 while ((p
= *pp
) != NULL
)
7880 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7891 /* xgettext:c-format */
7892 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7894 bfd_set_error (bfd_error_bad_value
);
7898 /* Remove unused Official Procedure Descriptor entries. Currently we
7899 only remove those associated with functions in discarded link-once
7900 sections, or weakly defined functions that have been overridden. It
7901 would be possible to remove many more entries for statically linked
7905 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7908 bfd_boolean some_edited
= FALSE
;
7909 asection
*need_pad
= NULL
;
7910 struct ppc_link_hash_table
*htab
;
7912 htab
= ppc_hash_table (info
);
7916 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7919 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7920 Elf_Internal_Shdr
*symtab_hdr
;
7921 Elf_Internal_Sym
*local_syms
;
7922 struct _opd_sec_data
*opd
;
7923 bfd_boolean need_edit
, add_aux_fields
, broken
;
7924 bfd_size_type cnt_16b
= 0;
7926 if (!is_ppc64_elf (ibfd
))
7929 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7930 if (sec
== NULL
|| sec
->size
== 0)
7933 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7936 if (sec
->output_section
== bfd_abs_section_ptr
)
7939 /* Look through the section relocs. */
7940 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7944 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7946 /* Read the relocations. */
7947 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7949 if (relstart
== NULL
)
7952 /* First run through the relocs to check they are sane, and to
7953 determine whether we need to edit this opd section. */
7957 relend
= relstart
+ sec
->reloc_count
;
7958 for (rel
= relstart
; rel
< relend
; )
7960 enum elf_ppc64_reloc_type r_type
;
7961 unsigned long r_symndx
;
7963 struct elf_link_hash_entry
*h
;
7964 Elf_Internal_Sym
*sym
;
7967 /* .opd contains an array of 16 or 24 byte entries. We're
7968 only interested in the reloc pointing to a function entry
7970 offset
= rel
->r_offset
;
7971 if (rel
+ 1 == relend
7972 || rel
[1].r_offset
!= offset
+ 8)
7974 /* If someone messes with .opd alignment then after a
7975 "ld -r" we might have padding in the middle of .opd.
7976 Also, there's nothing to prevent someone putting
7977 something silly in .opd with the assembler. No .opd
7978 optimization for them! */
7981 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7986 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7987 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7990 /* xgettext:c-format */
7991 (_("%B: unexpected reloc type %u in .opd section"),
7997 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7998 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8002 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
8004 const char *sym_name
;
8006 sym_name
= h
->root
.root
.string
;
8008 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8012 /* xgettext:c-format */
8013 (_("%B: undefined sym `%s' in .opd section"),
8019 /* opd entries are always for functions defined in the
8020 current input bfd. If the symbol isn't defined in the
8021 input bfd, then we won't be using the function in this
8022 bfd; It must be defined in a linkonce section in another
8023 bfd, or is weak. It's also possible that we are
8024 discarding the function due to a linker script /DISCARD/,
8025 which we test for via the output_section. */
8026 if (sym_sec
->owner
!= ibfd
8027 || sym_sec
->output_section
== bfd_abs_section_ptr
)
8031 if (rel
+ 1 == relend
8032 || (rel
+ 2 < relend
8033 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
8038 if (sec
->size
== offset
+ 24)
8043 if (sec
->size
== offset
+ 16)
8050 else if (rel
+ 1 < relend
8051 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8052 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8054 if (rel
[0].r_offset
== offset
+ 16)
8056 else if (rel
[0].r_offset
!= offset
+ 24)
8063 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8065 if (!broken
&& (need_edit
|| add_aux_fields
))
8067 Elf_Internal_Rela
*write_rel
;
8068 Elf_Internal_Shdr
*rel_hdr
;
8069 bfd_byte
*rptr
, *wptr
;
8070 bfd_byte
*new_contents
;
8073 new_contents
= NULL
;
8074 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8075 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8076 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8077 if (opd
->adjust
== NULL
)
8079 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8081 /* This seems a waste of time as input .opd sections are all
8082 zeros as generated by gcc, but I suppose there's no reason
8083 this will always be so. We might start putting something in
8084 the third word of .opd entries. */
8085 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8088 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8093 if (local_syms
!= NULL
8094 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8096 if (elf_section_data (sec
)->relocs
!= relstart
)
8100 sec
->contents
= loc
;
8101 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8104 elf_section_data (sec
)->relocs
= relstart
;
8106 new_contents
= sec
->contents
;
8109 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8110 if (new_contents
== NULL
)
8114 wptr
= new_contents
;
8115 rptr
= sec
->contents
;
8116 write_rel
= relstart
;
8117 for (rel
= relstart
; rel
< relend
; )
8119 unsigned long r_symndx
;
8121 struct elf_link_hash_entry
*h
;
8122 struct ppc_link_hash_entry
*fdh
= NULL
;
8123 Elf_Internal_Sym
*sym
;
8125 Elf_Internal_Rela
*next_rel
;
8128 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8129 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8134 if (next_rel
+ 1 == relend
8135 || (next_rel
+ 2 < relend
8136 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8139 /* See if the .opd entry is full 24 byte or
8140 16 byte (with fd_aux entry overlapped with next
8143 if (next_rel
== relend
)
8145 if (sec
->size
== rel
->r_offset
+ 16)
8148 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8152 && h
->root
.root
.string
[0] == '.')
8154 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8157 fdh
= ppc_follow_link (fdh
);
8158 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8159 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8164 skip
= (sym_sec
->owner
!= ibfd
8165 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8168 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8170 /* Arrange for the function descriptor sym
8172 fdh
->elf
.root
.u
.def
.value
= 0;
8173 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8175 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8177 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8182 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8186 if (++rel
== next_rel
)
8189 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8190 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8197 /* We'll be keeping this opd entry. */
8202 /* Redefine the function descriptor symbol to
8203 this location in the opd section. It is
8204 necessary to update the value here rather
8205 than using an array of adjustments as we do
8206 for local symbols, because various places
8207 in the generic ELF code use the value
8208 stored in u.def.value. */
8209 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8210 fdh
->adjust_done
= 1;
8213 /* Local syms are a bit tricky. We could
8214 tweak them as they can be cached, but
8215 we'd need to look through the local syms
8216 for the function descriptor sym which we
8217 don't have at the moment. So keep an
8218 array of adjustments. */
8219 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8220 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8223 memcpy (wptr
, rptr
, opd_ent_size
);
8224 wptr
+= opd_ent_size
;
8225 if (add_aux_fields
&& opd_ent_size
== 16)
8227 memset (wptr
, '\0', 8);
8231 /* We need to adjust any reloc offsets to point to the
8233 for ( ; rel
!= next_rel
; ++rel
)
8235 rel
->r_offset
+= adjust
;
8236 if (write_rel
!= rel
)
8237 memcpy (write_rel
, rel
, sizeof (*rel
));
8242 rptr
+= opd_ent_size
;
8245 sec
->size
= wptr
- new_contents
;
8246 sec
->reloc_count
= write_rel
- relstart
;
8249 free (sec
->contents
);
8250 sec
->contents
= new_contents
;
8253 /* Fudge the header size too, as this is used later in
8254 elf_bfd_final_link if we are emitting relocs. */
8255 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8256 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8259 else if (elf_section_data (sec
)->relocs
!= relstart
)
8262 if (local_syms
!= NULL
8263 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8265 if (!info
->keep_memory
)
8268 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8273 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8275 /* If we are doing a final link and the last .opd entry is just 16 byte
8276 long, add a 8 byte padding after it. */
8277 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8281 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8283 BFD_ASSERT (need_pad
->size
> 0);
8285 p
= bfd_malloc (need_pad
->size
+ 8);
8289 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8290 p
, 0, need_pad
->size
))
8293 need_pad
->contents
= p
;
8294 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8298 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8302 need_pad
->contents
= p
;
8305 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8306 need_pad
->size
+= 8;
8312 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8315 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8317 struct ppc_link_hash_table
*htab
;
8319 htab
= ppc_hash_table (info
);
8323 if (abiversion (info
->output_bfd
) == 1)
8326 if (htab
->params
->no_multi_toc
)
8327 htab
->do_multi_toc
= 0;
8328 else if (!htab
->do_multi_toc
)
8329 htab
->params
->no_multi_toc
= 1;
8331 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8332 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8333 FALSE
, FALSE
, TRUE
));
8334 /* Move dynamic linking info to the function descriptor sym. */
8335 if (htab
->tls_get_addr
!= NULL
)
8336 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8337 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8338 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8339 FALSE
, FALSE
, TRUE
));
8340 if (htab
->params
->tls_get_addr_opt
)
8342 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8344 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8345 FALSE
, FALSE
, TRUE
);
8347 func_desc_adjust (opt
, info
);
8348 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8349 FALSE
, FALSE
, TRUE
);
8351 && (opt_fd
->root
.type
== bfd_link_hash_defined
8352 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8354 /* If glibc supports an optimized __tls_get_addr call stub,
8355 signalled by the presence of __tls_get_addr_opt, and we'll
8356 be calling __tls_get_addr via a plt call stub, then
8357 make __tls_get_addr point to __tls_get_addr_opt. */
8358 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8359 if (htab
->elf
.dynamic_sections_created
8361 && (tga_fd
->type
== STT_FUNC
8362 || tga_fd
->needs_plt
)
8363 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8364 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8366 struct plt_entry
*ent
;
8368 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8369 if (ent
->plt
.refcount
> 0)
8373 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8374 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8375 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8377 if (opt_fd
->dynindx
!= -1)
8379 /* Use __tls_get_addr_opt in dynamic relocations. */
8380 opt_fd
->dynindx
= -1;
8381 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8382 opt_fd
->dynstr_index
);
8383 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8386 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8387 tga
= &htab
->tls_get_addr
->elf
;
8388 if (opt
!= NULL
&& tga
!= NULL
)
8390 tga
->root
.type
= bfd_link_hash_indirect
;
8391 tga
->root
.u
.i
.link
= &opt
->root
;
8392 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8394 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8396 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8398 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8399 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8400 if (htab
->tls_get_addr
!= NULL
)
8402 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8403 htab
->tls_get_addr
->is_func
= 1;
8408 else if (htab
->params
->tls_get_addr_opt
< 0)
8409 htab
->params
->tls_get_addr_opt
= 0;
8411 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8414 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8418 branch_reloc_hash_match (const bfd
*ibfd
,
8419 const Elf_Internal_Rela
*rel
,
8420 const struct ppc_link_hash_entry
*hash1
,
8421 const struct ppc_link_hash_entry
*hash2
)
8423 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8424 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8425 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8427 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8429 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8430 struct elf_link_hash_entry
*h
;
8432 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8433 h
= elf_follow_link (h
);
8434 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8440 /* Run through all the TLS relocs looking for optimization
8441 opportunities. The linker has been hacked (see ppc64elf.em) to do
8442 a preliminary section layout so that we know the TLS segment
8443 offsets. We can't optimize earlier because some optimizations need
8444 to know the tp offset, and we need to optimize before allocating
8445 dynamic relocations. */
8448 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8452 struct ppc_link_hash_table
*htab
;
8453 unsigned char *toc_ref
;
8456 if (!bfd_link_executable (info
))
8459 htab
= ppc_hash_table (info
);
8463 /* Make two passes over the relocs. On the first pass, mark toc
8464 entries involved with tls relocs, and check that tls relocs
8465 involved in setting up a tls_get_addr call are indeed followed by
8466 such a call. If they are not, we can't do any tls optimization.
8467 On the second pass twiddle tls_mask flags to notify
8468 relocate_section that optimization can be done, and adjust got
8469 and plt refcounts. */
8471 for (pass
= 0; pass
< 2; ++pass
)
8472 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8474 Elf_Internal_Sym
*locsyms
= NULL
;
8475 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8477 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8478 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8480 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8481 bfd_boolean found_tls_get_addr_arg
= 0;
8483 /* Read the relocations. */
8484 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8486 if (relstart
== NULL
)
8492 relend
= relstart
+ sec
->reloc_count
;
8493 for (rel
= relstart
; rel
< relend
; rel
++)
8495 enum elf_ppc64_reloc_type r_type
;
8496 unsigned long r_symndx
;
8497 struct elf_link_hash_entry
*h
;
8498 Elf_Internal_Sym
*sym
;
8500 unsigned char *tls_mask
;
8501 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8503 bfd_boolean ok_tprel
, is_local
;
8504 long toc_ref_index
= 0;
8505 int expecting_tls_get_addr
= 0;
8506 bfd_boolean ret
= FALSE
;
8508 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8509 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8513 if (elf_section_data (sec
)->relocs
!= relstart
)
8515 if (toc_ref
!= NULL
)
8518 && (elf_symtab_hdr (ibfd
).contents
8519 != (unsigned char *) locsyms
))
8526 if (h
->root
.type
== bfd_link_hash_defined
8527 || h
->root
.type
== bfd_link_hash_defweak
)
8528 value
= h
->root
.u
.def
.value
;
8529 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8533 found_tls_get_addr_arg
= 0;
8538 /* Symbols referenced by TLS relocs must be of type
8539 STT_TLS. So no need for .opd local sym adjust. */
8540 value
= sym
->st_value
;
8549 && h
->root
.type
== bfd_link_hash_undefweak
)
8551 else if (sym_sec
!= NULL
8552 && sym_sec
->output_section
!= NULL
)
8554 value
+= sym_sec
->output_offset
;
8555 value
+= sym_sec
->output_section
->vma
;
8556 value
-= htab
->elf
.tls_sec
->vma
;
8557 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8558 < (bfd_vma
) 1 << 32);
8562 r_type
= ELF64_R_TYPE (rel
->r_info
);
8563 /* If this section has old-style __tls_get_addr calls
8564 without marker relocs, then check that each
8565 __tls_get_addr call reloc is preceded by a reloc
8566 that conceivably belongs to the __tls_get_addr arg
8567 setup insn. If we don't find matching arg setup
8568 relocs, don't do any tls optimization. */
8570 && sec
->has_tls_get_addr_call
8572 && (h
== &htab
->tls_get_addr
->elf
8573 || h
== &htab
->tls_get_addr_fd
->elf
)
8574 && !found_tls_get_addr_arg
8575 && is_branch_reloc (r_type
))
8577 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8578 "TLS optimization disabled\n"),
8579 ibfd
, sec
, rel
->r_offset
);
8584 found_tls_get_addr_arg
= 0;
8587 case R_PPC64_GOT_TLSLD16
:
8588 case R_PPC64_GOT_TLSLD16_LO
:
8589 expecting_tls_get_addr
= 1;
8590 found_tls_get_addr_arg
= 1;
8593 case R_PPC64_GOT_TLSLD16_HI
:
8594 case R_PPC64_GOT_TLSLD16_HA
:
8595 /* These relocs should never be against a symbol
8596 defined in a shared lib. Leave them alone if
8597 that turns out to be the case. */
8604 tls_type
= TLS_TLS
| TLS_LD
;
8607 case R_PPC64_GOT_TLSGD16
:
8608 case R_PPC64_GOT_TLSGD16_LO
:
8609 expecting_tls_get_addr
= 1;
8610 found_tls_get_addr_arg
= 1;
8613 case R_PPC64_GOT_TLSGD16_HI
:
8614 case R_PPC64_GOT_TLSGD16_HA
:
8620 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8622 tls_type
= TLS_TLS
| TLS_GD
;
8625 case R_PPC64_GOT_TPREL16_DS
:
8626 case R_PPC64_GOT_TPREL16_LO_DS
:
8627 case R_PPC64_GOT_TPREL16_HI
:
8628 case R_PPC64_GOT_TPREL16_HA
:
8633 tls_clear
= TLS_TPREL
;
8634 tls_type
= TLS_TLS
| TLS_TPREL
;
8641 found_tls_get_addr_arg
= 1;
8646 case R_PPC64_TOC16_LO
:
8647 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8650 /* Mark this toc entry as referenced by a TLS
8651 code sequence. We can do that now in the
8652 case of R_PPC64_TLS, and after checking for
8653 tls_get_addr for the TOC16 relocs. */
8654 if (toc_ref
== NULL
)
8655 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8656 if (toc_ref
== NULL
)
8660 value
= h
->root
.u
.def
.value
;
8662 value
= sym
->st_value
;
8663 value
+= rel
->r_addend
;
8666 BFD_ASSERT (value
< toc
->size
8667 && toc
->output_offset
% 8 == 0);
8668 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8669 if (r_type
== R_PPC64_TLS
8670 || r_type
== R_PPC64_TLSGD
8671 || r_type
== R_PPC64_TLSLD
)
8673 toc_ref
[toc_ref_index
] = 1;
8677 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8682 expecting_tls_get_addr
= 2;
8685 case R_PPC64_TPREL64
:
8689 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8694 tls_set
= TLS_EXPLICIT
;
8695 tls_clear
= TLS_TPREL
;
8700 case R_PPC64_DTPMOD64
:
8704 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8706 if (rel
+ 1 < relend
8708 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8709 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8713 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8716 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8725 tls_set
= TLS_EXPLICIT
;
8736 if (!expecting_tls_get_addr
8737 || !sec
->has_tls_get_addr_call
)
8740 if (rel
+ 1 < relend
8741 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8743 htab
->tls_get_addr_fd
))
8745 if (expecting_tls_get_addr
== 2)
8747 /* Check for toc tls entries. */
8748 unsigned char *toc_tls
;
8751 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8756 if (toc_tls
!= NULL
)
8758 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8759 found_tls_get_addr_arg
= 1;
8761 toc_ref
[toc_ref_index
] = 1;
8767 if (expecting_tls_get_addr
!= 1)
8770 /* Uh oh, we didn't find the expected call. We
8771 could just mark this symbol to exclude it
8772 from tls optimization but it's safer to skip
8773 the entire optimization. */
8774 /* xgettext:c-format */
8775 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8776 "TLS optimization disabled\n"),
8777 ibfd
, sec
, rel
->r_offset
);
8782 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8784 struct plt_entry
*ent
;
8785 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8788 if (ent
->addend
== 0)
8790 if (ent
->plt
.refcount
> 0)
8792 ent
->plt
.refcount
-= 1;
8793 expecting_tls_get_addr
= 0;
8799 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8801 struct plt_entry
*ent
;
8802 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8805 if (ent
->addend
== 0)
8807 if (ent
->plt
.refcount
> 0)
8808 ent
->plt
.refcount
-= 1;
8816 if ((tls_set
& TLS_EXPLICIT
) == 0)
8818 struct got_entry
*ent
;
8820 /* Adjust got entry for this reloc. */
8824 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8826 for (; ent
!= NULL
; ent
= ent
->next
)
8827 if (ent
->addend
== rel
->r_addend
8828 && ent
->owner
== ibfd
8829 && ent
->tls_type
== tls_type
)
8836 /* We managed to get rid of a got entry. */
8837 if (ent
->got
.refcount
> 0)
8838 ent
->got
.refcount
-= 1;
8843 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8844 we'll lose one or two dyn relocs. */
8845 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8849 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8851 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8857 *tls_mask
|= tls_set
;
8858 *tls_mask
&= ~tls_clear
;
8861 if (elf_section_data (sec
)->relocs
!= relstart
)
8866 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8868 if (!info
->keep_memory
)
8871 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8875 if (toc_ref
!= NULL
)
8880 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8881 the values of any global symbols in a toc section that has been
8882 edited. Globals in toc sections should be a rarity, so this function
8883 sets a flag if any are found in toc sections other than the one just
8884 edited, so that futher hash table traversals can be avoided. */
8886 struct adjust_toc_info
8889 unsigned long *skip
;
8890 bfd_boolean global_toc_syms
;
8893 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8896 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8898 struct ppc_link_hash_entry
*eh
;
8899 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8902 if (h
->root
.type
!= bfd_link_hash_defined
8903 && h
->root
.type
!= bfd_link_hash_defweak
)
8906 eh
= (struct ppc_link_hash_entry
*) h
;
8907 if (eh
->adjust_done
)
8910 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8912 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8913 i
= toc_inf
->toc
->rawsize
>> 3;
8915 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8917 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8920 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8923 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8924 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8927 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8928 eh
->adjust_done
= 1;
8930 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8931 toc_inf
->global_toc_syms
= TRUE
;
8936 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8937 on a _LO variety toc/got reloc. */
8940 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8942 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8943 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8944 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8945 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8946 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8947 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8948 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8949 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8950 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8951 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8952 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8953 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8954 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8955 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8956 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8957 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
8958 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8959 /* Exclude lfqu by testing reloc. If relocs are ever
8960 defined for the reduced D field in psq_lu then those
8961 will need testing too. */
8962 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8963 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
8965 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
8966 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8967 /* Exclude stfqu. psq_stu as above for psq_lu. */
8968 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
8969 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
8970 && (insn
& 1) == 0));
8973 /* Examine all relocs referencing .toc sections in order to remove
8974 unused .toc entries. */
8977 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8980 struct adjust_toc_info toc_inf
;
8981 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8983 htab
->do_toc_opt
= 1;
8984 toc_inf
.global_toc_syms
= TRUE
;
8985 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8987 asection
*toc
, *sec
;
8988 Elf_Internal_Shdr
*symtab_hdr
;
8989 Elf_Internal_Sym
*local_syms
;
8990 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8991 unsigned long *skip
, *drop
;
8992 unsigned char *used
;
8993 unsigned char *keep
, last
, some_unused
;
8995 if (!is_ppc64_elf (ibfd
))
8998 toc
= bfd_get_section_by_name (ibfd
, ".toc");
9001 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
9002 || discarded_section (toc
))
9007 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9009 /* Look at sections dropped from the final link. */
9012 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9014 if (sec
->reloc_count
== 0
9015 || !discarded_section (sec
)
9016 || get_opd_info (sec
)
9017 || (sec
->flags
& SEC_ALLOC
) == 0
9018 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9021 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
9022 if (relstart
== NULL
)
9025 /* Run through the relocs to see which toc entries might be
9027 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9029 enum elf_ppc64_reloc_type r_type
;
9030 unsigned long r_symndx
;
9032 struct elf_link_hash_entry
*h
;
9033 Elf_Internal_Sym
*sym
;
9036 r_type
= ELF64_R_TYPE (rel
->r_info
);
9043 case R_PPC64_TOC16_LO
:
9044 case R_PPC64_TOC16_HI
:
9045 case R_PPC64_TOC16_HA
:
9046 case R_PPC64_TOC16_DS
:
9047 case R_PPC64_TOC16_LO_DS
:
9051 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9052 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9060 val
= h
->root
.u
.def
.value
;
9062 val
= sym
->st_value
;
9063 val
+= rel
->r_addend
;
9065 if (val
>= toc
->size
)
9068 /* Anything in the toc ought to be aligned to 8 bytes.
9069 If not, don't mark as unused. */
9075 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9080 skip
[val
>> 3] = ref_from_discarded
;
9083 if (elf_section_data (sec
)->relocs
!= relstart
)
9087 /* For largetoc loads of address constants, we can convert
9088 . addis rx,2,addr@got@ha
9089 . ld ry,addr@got@l(rx)
9091 . addis rx,2,addr@toc@ha
9092 . addi ry,rx,addr@toc@l
9093 when addr is within 2G of the toc pointer. This then means
9094 that the word storing "addr" in the toc is no longer needed. */
9096 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9097 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9098 && toc
->reloc_count
!= 0)
9100 /* Read toc relocs. */
9101 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9103 if (toc_relocs
== NULL
)
9106 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9108 enum elf_ppc64_reloc_type r_type
;
9109 unsigned long r_symndx
;
9111 struct elf_link_hash_entry
*h
;
9112 Elf_Internal_Sym
*sym
;
9115 r_type
= ELF64_R_TYPE (rel
->r_info
);
9116 if (r_type
!= R_PPC64_ADDR64
)
9119 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9120 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9125 || sym_sec
->output_section
== NULL
9126 || discarded_section (sym_sec
))
9129 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9134 if (h
->type
== STT_GNU_IFUNC
)
9136 val
= h
->root
.u
.def
.value
;
9140 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9142 val
= sym
->st_value
;
9144 val
+= rel
->r_addend
;
9145 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9147 /* We don't yet know the exact toc pointer value, but we
9148 know it will be somewhere in the toc section. Don't
9149 optimize if the difference from any possible toc
9150 pointer is outside [ff..f80008000, 7fff7fff]. */
9151 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9152 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9155 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9156 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9161 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9166 skip
[rel
->r_offset
>> 3]
9167 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9174 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9178 if (local_syms
!= NULL
9179 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9183 && elf_section_data (sec
)->relocs
!= relstart
)
9185 if (toc_relocs
!= NULL
9186 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9193 /* Now check all kept sections that might reference the toc.
9194 Check the toc itself last. */
9195 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9198 sec
= (sec
== toc
? NULL
9199 : sec
->next
== NULL
? toc
9200 : sec
->next
== toc
&& toc
->next
? toc
->next
9205 if (sec
->reloc_count
== 0
9206 || discarded_section (sec
)
9207 || get_opd_info (sec
)
9208 || (sec
->flags
& SEC_ALLOC
) == 0
9209 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9212 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9214 if (relstart
== NULL
)
9220 /* Mark toc entries referenced as used. */
9224 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9226 enum elf_ppc64_reloc_type r_type
;
9227 unsigned long r_symndx
;
9229 struct elf_link_hash_entry
*h
;
9230 Elf_Internal_Sym
*sym
;
9232 enum {no_check
, check_lo
, check_ha
} insn_check
;
9234 r_type
= ELF64_R_TYPE (rel
->r_info
);
9238 insn_check
= no_check
;
9241 case R_PPC64_GOT_TLSLD16_HA
:
9242 case R_PPC64_GOT_TLSGD16_HA
:
9243 case R_PPC64_GOT_TPREL16_HA
:
9244 case R_PPC64_GOT_DTPREL16_HA
:
9245 case R_PPC64_GOT16_HA
:
9246 case R_PPC64_TOC16_HA
:
9247 insn_check
= check_ha
;
9250 case R_PPC64_GOT_TLSLD16_LO
:
9251 case R_PPC64_GOT_TLSGD16_LO
:
9252 case R_PPC64_GOT_TPREL16_LO_DS
:
9253 case R_PPC64_GOT_DTPREL16_LO_DS
:
9254 case R_PPC64_GOT16_LO
:
9255 case R_PPC64_GOT16_LO_DS
:
9256 case R_PPC64_TOC16_LO
:
9257 case R_PPC64_TOC16_LO_DS
:
9258 insn_check
= check_lo
;
9262 if (insn_check
!= no_check
)
9264 bfd_vma off
= rel
->r_offset
& ~3;
9265 unsigned char buf
[4];
9268 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9273 insn
= bfd_get_32 (ibfd
, buf
);
9274 if (insn_check
== check_lo
9275 ? !ok_lo_toc_insn (insn
, r_type
)
9276 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9277 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9281 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9282 sprintf (str
, "%#08x", insn
);
9283 info
->callbacks
->einfo
9284 /* xgettext:c-format */
9285 (_("%H: toc optimization is not supported for"
9286 " %s instruction.\n"),
9287 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9294 case R_PPC64_TOC16_LO
:
9295 case R_PPC64_TOC16_HI
:
9296 case R_PPC64_TOC16_HA
:
9297 case R_PPC64_TOC16_DS
:
9298 case R_PPC64_TOC16_LO_DS
:
9299 /* In case we're taking addresses of toc entries. */
9300 case R_PPC64_ADDR64
:
9307 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9308 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9319 val
= h
->root
.u
.def
.value
;
9321 val
= sym
->st_value
;
9322 val
+= rel
->r_addend
;
9324 if (val
>= toc
->size
)
9327 if ((skip
[val
>> 3] & can_optimize
) != 0)
9334 case R_PPC64_TOC16_HA
:
9337 case R_PPC64_TOC16_LO_DS
:
9338 off
= rel
->r_offset
;
9339 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9340 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9346 if ((opc
& (0x3f << 2)) == (58u << 2))
9351 /* Wrong sort of reloc, or not a ld. We may
9352 as well clear ref_from_discarded too. */
9359 /* For the toc section, we only mark as used if this
9360 entry itself isn't unused. */
9361 else if ((used
[rel
->r_offset
>> 3]
9362 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9365 /* Do all the relocs again, to catch reference
9374 if (elf_section_data (sec
)->relocs
!= relstart
)
9378 /* Merge the used and skip arrays. Assume that TOC
9379 doublewords not appearing as either used or unused belong
9380 to to an entry more than one doubleword in size. */
9381 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9382 drop
< skip
+ (toc
->size
+ 7) / 8;
9387 *drop
&= ~ref_from_discarded
;
9388 if ((*drop
& can_optimize
) != 0)
9392 else if ((*drop
& ref_from_discarded
) != 0)
9395 last
= ref_from_discarded
;
9405 bfd_byte
*contents
, *src
;
9407 Elf_Internal_Sym
*sym
;
9408 bfd_boolean local_toc_syms
= FALSE
;
9410 /* Shuffle the toc contents, and at the same time convert the
9411 skip array from booleans into offsets. */
9412 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9415 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9417 for (src
= contents
, off
= 0, drop
= skip
;
9418 src
< contents
+ toc
->size
;
9421 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9426 memcpy (src
- off
, src
, 8);
9430 toc
->rawsize
= toc
->size
;
9431 toc
->size
= src
- contents
- off
;
9433 /* Adjust addends for relocs against the toc section sym,
9434 and optimize any accesses we can. */
9435 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9437 if (sec
->reloc_count
== 0
9438 || discarded_section (sec
))
9441 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9443 if (relstart
== NULL
)
9446 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9448 enum elf_ppc64_reloc_type r_type
;
9449 unsigned long r_symndx
;
9451 struct elf_link_hash_entry
*h
;
9454 r_type
= ELF64_R_TYPE (rel
->r_info
);
9461 case R_PPC64_TOC16_LO
:
9462 case R_PPC64_TOC16_HI
:
9463 case R_PPC64_TOC16_HA
:
9464 case R_PPC64_TOC16_DS
:
9465 case R_PPC64_TOC16_LO_DS
:
9466 case R_PPC64_ADDR64
:
9470 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9471 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9479 val
= h
->root
.u
.def
.value
;
9482 val
= sym
->st_value
;
9484 local_toc_syms
= TRUE
;
9487 val
+= rel
->r_addend
;
9489 if (val
> toc
->rawsize
)
9491 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9493 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9495 Elf_Internal_Rela
*tocrel
9496 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9497 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9501 case R_PPC64_TOC16_HA
:
9502 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9505 case R_PPC64_TOC16_LO_DS
:
9506 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9510 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9512 info
->callbacks
->einfo
9513 /* xgettext:c-format */
9514 (_("%H: %s references "
9515 "optimized away TOC entry\n"),
9516 ibfd
, sec
, rel
->r_offset
,
9517 ppc64_elf_howto_table
[r_type
]->name
);
9518 bfd_set_error (bfd_error_bad_value
);
9521 rel
->r_addend
= tocrel
->r_addend
;
9522 elf_section_data (sec
)->relocs
= relstart
;
9526 if (h
!= NULL
|| sym
->st_value
!= 0)
9529 rel
->r_addend
-= skip
[val
>> 3];
9530 elf_section_data (sec
)->relocs
= relstart
;
9533 if (elf_section_data (sec
)->relocs
!= relstart
)
9537 /* We shouldn't have local or global symbols defined in the TOC,
9538 but handle them anyway. */
9539 if (local_syms
!= NULL
)
9540 for (sym
= local_syms
;
9541 sym
< local_syms
+ symtab_hdr
->sh_info
;
9543 if (sym
->st_value
!= 0
9544 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9548 if (sym
->st_value
> toc
->rawsize
)
9549 i
= toc
->rawsize
>> 3;
9551 i
= sym
->st_value
>> 3;
9553 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9557 (_("%s defined on removed toc entry"),
9558 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9561 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9562 sym
->st_value
= (bfd_vma
) i
<< 3;
9565 sym
->st_value
-= skip
[i
];
9566 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9569 /* Adjust any global syms defined in this toc input section. */
9570 if (toc_inf
.global_toc_syms
)
9573 toc_inf
.skip
= skip
;
9574 toc_inf
.global_toc_syms
= FALSE
;
9575 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9579 if (toc
->reloc_count
!= 0)
9581 Elf_Internal_Shdr
*rel_hdr
;
9582 Elf_Internal_Rela
*wrel
;
9585 /* Remove unused toc relocs, and adjust those we keep. */
9586 if (toc_relocs
== NULL
)
9587 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9589 if (toc_relocs
== NULL
)
9593 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9594 if ((skip
[rel
->r_offset
>> 3]
9595 & (ref_from_discarded
| can_optimize
)) == 0)
9597 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9598 wrel
->r_info
= rel
->r_info
;
9599 wrel
->r_addend
= rel
->r_addend
;
9602 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9603 &local_syms
, NULL
, NULL
))
9606 elf_section_data (toc
)->relocs
= toc_relocs
;
9607 toc
->reloc_count
= wrel
- toc_relocs
;
9608 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9609 sz
= rel_hdr
->sh_entsize
;
9610 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9613 else if (toc_relocs
!= NULL
9614 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9617 if (local_syms
!= NULL
9618 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9620 if (!info
->keep_memory
)
9623 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9631 /* Return true iff input section I references the TOC using
9632 instructions limited to +/-32k offsets. */
9635 ppc64_elf_has_small_toc_reloc (asection
*i
)
9637 return (is_ppc64_elf (i
->owner
)
9638 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9641 /* Allocate space for one GOT entry. */
9644 allocate_got (struct elf_link_hash_entry
*h
,
9645 struct bfd_link_info
*info
,
9646 struct got_entry
*gent
)
9648 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9649 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9650 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9652 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9653 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9654 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9656 gent
->got
.offset
= got
->size
;
9657 got
->size
+= entsize
;
9659 if (h
->type
== STT_GNU_IFUNC
)
9661 htab
->elf
.irelplt
->size
+= rentsize
;
9662 htab
->got_reli_size
+= rentsize
;
9664 else if ((bfd_link_pic (info
)
9665 || (htab
->elf
.dynamic_sections_created
9667 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9668 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9670 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9671 relgot
->size
+= rentsize
;
9675 /* This function merges got entries in the same toc group. */
9678 merge_got_entries (struct got_entry
**pent
)
9680 struct got_entry
*ent
, *ent2
;
9682 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9683 if (!ent
->is_indirect
)
9684 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9685 if (!ent2
->is_indirect
9686 && ent2
->addend
== ent
->addend
9687 && ent2
->tls_type
== ent
->tls_type
9688 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9690 ent2
->is_indirect
= TRUE
;
9691 ent2
->got
.ent
= ent
;
9695 /* If H is undefined weak, make it dynamic if that makes sense. */
9698 ensure_undefweak_dynamic (struct bfd_link_info
*info
,
9699 struct elf_link_hash_entry
*h
)
9701 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9703 if (htab
->dynamic_sections_created
9704 && info
->dynamic_undefined_weak
!= 0
9705 && h
->root
.type
== bfd_link_hash_undefweak
9708 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9709 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9713 /* Allocate space in .plt, .got and associated reloc sections for
9717 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9719 struct bfd_link_info
*info
;
9720 struct ppc_link_hash_table
*htab
;
9722 struct ppc_link_hash_entry
*eh
;
9723 struct got_entry
**pgent
, *gent
;
9725 if (h
->root
.type
== bfd_link_hash_indirect
)
9728 info
= (struct bfd_link_info
*) inf
;
9729 htab
= ppc_hash_table (info
);
9733 eh
= (struct ppc_link_hash_entry
*) h
;
9734 /* Run through the TLS GD got entries first if we're changing them
9736 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9737 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9738 if (gent
->got
.refcount
> 0
9739 && (gent
->tls_type
& TLS_GD
) != 0)
9741 /* This was a GD entry that has been converted to TPREL. If
9742 there happens to be a TPREL entry we can use that one. */
9743 struct got_entry
*ent
;
9744 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9745 if (ent
->got
.refcount
> 0
9746 && (ent
->tls_type
& TLS_TPREL
) != 0
9747 && ent
->addend
== gent
->addend
9748 && ent
->owner
== gent
->owner
)
9750 gent
->got
.refcount
= 0;
9754 /* If not, then we'll be using our own TPREL entry. */
9755 if (gent
->got
.refcount
!= 0)
9756 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9759 /* Remove any list entry that won't generate a word in the GOT before
9760 we call merge_got_entries. Otherwise we risk merging to empty
9762 pgent
= &h
->got
.glist
;
9763 while ((gent
= *pgent
) != NULL
)
9764 if (gent
->got
.refcount
> 0)
9766 if ((gent
->tls_type
& TLS_LD
) != 0
9769 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9770 *pgent
= gent
->next
;
9773 pgent
= &gent
->next
;
9776 *pgent
= gent
->next
;
9778 if (!htab
->do_multi_toc
)
9779 merge_got_entries (&h
->got
.glist
);
9781 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9782 if (!gent
->is_indirect
)
9784 /* Make sure this symbol is output as a dynamic symbol.
9785 Undefined weak syms won't yet be marked as dynamic. */
9786 if (!ensure_undefweak_dynamic (info
, h
))
9789 if (!is_ppc64_elf (gent
->owner
))
9792 allocate_got (h
, info
, gent
);
9795 /* If no dynamic sections we can't have dynamic relocs, except for
9796 IFUNCs which are handled even in static executables. */
9797 if (!htab
->elf
.dynamic_sections_created
9798 && h
->type
!= STT_GNU_IFUNC
)
9799 eh
->dyn_relocs
= NULL
;
9801 /* Also discard relocs on undefined weak syms with non-default
9802 visibility, or when dynamic_undefined_weak says so. */
9803 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9804 eh
->dyn_relocs
= NULL
;
9806 if (eh
->dyn_relocs
!= NULL
)
9808 struct elf_dyn_relocs
*p
, **pp
;
9810 /* In the shared -Bsymbolic case, discard space allocated for
9811 dynamic pc-relative relocs against symbols which turn out to
9812 be defined in regular objects. For the normal shared case,
9813 discard space for relocs that have become local due to symbol
9814 visibility changes. */
9816 if (bfd_link_pic (info
))
9818 /* Relocs that use pc_count are those that appear on a call
9819 insn, or certain REL relocs (see must_be_dyn_reloc) that
9820 can be generated via assembly. We want calls to
9821 protected symbols to resolve directly to the function
9822 rather than going via the plt. If people want function
9823 pointer comparisons to work as expected then they should
9824 avoid writing weird assembly. */
9825 if (SYMBOL_CALLS_LOCAL (info
, h
))
9827 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9829 p
->count
-= p
->pc_count
;
9838 if (eh
->dyn_relocs
!= NULL
)
9840 /* Make sure this symbol is output as a dynamic symbol.
9841 Undefined weak syms won't yet be marked as dynamic. */
9842 if (!ensure_undefweak_dynamic (info
, h
))
9846 else if (h
->type
== STT_GNU_IFUNC
)
9848 /* A plt entry is always created when making direct calls to
9849 an ifunc, even when building a static executable, but
9850 that doesn't cover all cases. We may have only an ifunc
9851 initialised function pointer for a given ifunc symbol.
9853 For ELFv2, dynamic relocations are not required when
9854 generating a global entry PLT stub. */
9855 if (abiversion (info
->output_bfd
) >= 2)
9857 if (global_entry_stub (h
))
9858 eh
->dyn_relocs
= NULL
;
9861 /* For ELFv1 we have function descriptors. Descriptors need
9862 to be treated like PLT entries and thus have dynamic
9863 relocations. One exception is when the function
9864 descriptor is copied into .dynbss (which should only
9865 happen with ancient versions of gcc). */
9866 else if (h
->needs_copy
)
9867 eh
->dyn_relocs
= NULL
;
9869 else if (ELIMINATE_COPY_RELOCS
)
9871 /* For the non-pic case, discard space for relocs against
9872 symbols which turn out to need copy relocs or are not
9877 /* Make sure this symbol is output as a dynamic symbol.
9878 Undefined weak syms won't yet be marked as dynamic. */
9879 if (!ensure_undefweak_dynamic (info
, h
))
9882 if (h
->dynindx
== -1)
9883 eh
->dyn_relocs
= NULL
;
9886 eh
->dyn_relocs
= NULL
;
9889 /* Finally, allocate space. */
9890 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9892 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9893 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9894 sreloc
= htab
->elf
.irelplt
;
9895 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9899 if ((htab
->elf
.dynamic_sections_created
9900 && h
->dynindx
!= -1)
9901 || h
->type
== STT_GNU_IFUNC
)
9903 struct plt_entry
*pent
;
9904 bfd_boolean doneone
= FALSE
;
9905 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9906 if (pent
->plt
.refcount
> 0)
9908 if (!htab
->elf
.dynamic_sections_created
9909 || h
->dynindx
== -1)
9912 pent
->plt
.offset
= s
->size
;
9913 s
->size
+= PLT_ENTRY_SIZE (htab
);
9914 s
= htab
->elf
.irelplt
;
9918 /* If this is the first .plt entry, make room for the special
9922 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9924 pent
->plt
.offset
= s
->size
;
9926 /* Make room for this entry. */
9927 s
->size
+= PLT_ENTRY_SIZE (htab
);
9929 /* Make room for the .glink code. */
9932 s
->size
+= GLINK_CALL_STUB_SIZE
;
9935 /* We need bigger stubs past index 32767. */
9936 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9943 /* We also need to make an entry in the .rela.plt section. */
9944 s
= htab
->elf
.srelplt
;
9946 s
->size
+= sizeof (Elf64_External_Rela
);
9950 pent
->plt
.offset
= (bfd_vma
) -1;
9953 h
->plt
.plist
= NULL
;
9959 h
->plt
.plist
= NULL
;
9966 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9967 to set up space for global entry stubs. These are put in glink,
9968 after the branch table. */
9971 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9973 struct bfd_link_info
*info
;
9974 struct ppc_link_hash_table
*htab
;
9975 struct plt_entry
*pent
;
9978 if (h
->root
.type
== bfd_link_hash_indirect
)
9981 if (!h
->pointer_equality_needed
)
9988 htab
= ppc_hash_table (info
);
9993 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9994 if (pent
->plt
.offset
!= (bfd_vma
) -1
9995 && pent
->addend
== 0)
9997 /* For ELFv2, if this symbol is not defined in a regular file
9998 and we are not generating a shared library or pie, then we
9999 need to define the symbol in the executable on a call stub.
10000 This is to avoid text relocations. */
10001 s
->size
= (s
->size
+ 15) & -16;
10002 h
->root
.type
= bfd_link_hash_defined
;
10003 h
->root
.u
.def
.section
= s
;
10004 h
->root
.u
.def
.value
= s
->size
;
10011 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10012 read-only sections. */
10015 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
10017 if (h
->root
.type
== bfd_link_hash_indirect
)
10020 if (readonly_dynrelocs (h
))
10022 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
10024 /* Not an error, just cut short the traversal. */
10030 /* Set the sizes of the dynamic sections. */
10033 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
10034 struct bfd_link_info
*info
)
10036 struct ppc_link_hash_table
*htab
;
10039 bfd_boolean relocs
;
10041 struct got_entry
*first_tlsld
;
10043 htab
= ppc_hash_table (info
);
10047 dynobj
= htab
->elf
.dynobj
;
10048 if (dynobj
== NULL
)
10051 if (htab
->elf
.dynamic_sections_created
)
10053 /* Set the contents of the .interp section to the interpreter. */
10054 if (bfd_link_executable (info
) && !info
->nointerp
)
10056 s
= bfd_get_linker_section (dynobj
, ".interp");
10059 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10060 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10064 /* Set up .got offsets for local syms, and space for local dynamic
10066 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10068 struct got_entry
**lgot_ents
;
10069 struct got_entry
**end_lgot_ents
;
10070 struct plt_entry
**local_plt
;
10071 struct plt_entry
**end_local_plt
;
10072 unsigned char *lgot_masks
;
10073 bfd_size_type locsymcount
;
10074 Elf_Internal_Shdr
*symtab_hdr
;
10076 if (!is_ppc64_elf (ibfd
))
10079 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10081 struct ppc_dyn_relocs
*p
;
10083 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10085 if (!bfd_is_abs_section (p
->sec
)
10086 && bfd_is_abs_section (p
->sec
->output_section
))
10088 /* Input section has been discarded, either because
10089 it is a copy of a linkonce section or due to
10090 linker script /DISCARD/, so we'll be discarding
10093 else if (p
->count
!= 0)
10095 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10097 srel
= htab
->elf
.irelplt
;
10098 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10099 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10100 info
->flags
|= DF_TEXTREL
;
10105 lgot_ents
= elf_local_got_ents (ibfd
);
10109 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10110 locsymcount
= symtab_hdr
->sh_info
;
10111 end_lgot_ents
= lgot_ents
+ locsymcount
;
10112 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10113 end_local_plt
= local_plt
+ locsymcount
;
10114 lgot_masks
= (unsigned char *) end_local_plt
;
10115 s
= ppc64_elf_tdata (ibfd
)->got
;
10116 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10118 struct got_entry
**pent
, *ent
;
10121 while ((ent
= *pent
) != NULL
)
10122 if (ent
->got
.refcount
> 0)
10124 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10126 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10131 unsigned int ent_size
= 8;
10132 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10134 ent
->got
.offset
= s
->size
;
10135 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10140 s
->size
+= ent_size
;
10141 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10143 htab
->elf
.irelplt
->size
+= rel_size
;
10144 htab
->got_reli_size
+= rel_size
;
10146 else if (bfd_link_pic (info
))
10148 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10149 srel
->size
+= rel_size
;
10158 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10159 for (; local_plt
< end_local_plt
; ++local_plt
)
10161 struct plt_entry
*ent
;
10163 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10164 if (ent
->plt
.refcount
> 0)
10166 s
= htab
->elf
.iplt
;
10167 ent
->plt
.offset
= s
->size
;
10168 s
->size
+= PLT_ENTRY_SIZE (htab
);
10170 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10173 ent
->plt
.offset
= (bfd_vma
) -1;
10177 /* Allocate global sym .plt and .got entries, and space for global
10178 sym dynamic relocs. */
10179 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10180 /* Stash the end of glink branch table. */
10181 if (htab
->glink
!= NULL
)
10182 htab
->glink
->rawsize
= htab
->glink
->size
;
10184 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10185 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10187 first_tlsld
= NULL
;
10188 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10190 struct got_entry
*ent
;
10192 if (!is_ppc64_elf (ibfd
))
10195 ent
= ppc64_tlsld_got (ibfd
);
10196 if (ent
->got
.refcount
> 0)
10198 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10200 ent
->is_indirect
= TRUE
;
10201 ent
->got
.ent
= first_tlsld
;
10205 if (first_tlsld
== NULL
)
10207 s
= ppc64_elf_tdata (ibfd
)->got
;
10208 ent
->got
.offset
= s
->size
;
10211 if (bfd_link_pic (info
))
10213 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10214 srel
->size
+= sizeof (Elf64_External_Rela
);
10219 ent
->got
.offset
= (bfd_vma
) -1;
10222 /* We now have determined the sizes of the various dynamic sections.
10223 Allocate memory for them. */
10225 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10227 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10230 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10231 /* These haven't been allocated yet; don't strip. */
10233 else if (s
== htab
->elf
.sgot
10234 || s
== htab
->elf
.splt
10235 || s
== htab
->elf
.iplt
10236 || s
== htab
->glink
10237 || s
== htab
->elf
.sdynbss
10238 || s
== htab
->elf
.sdynrelro
)
10240 /* Strip this section if we don't need it; see the
10243 else if (s
== htab
->glink_eh_frame
)
10245 if (!bfd_is_abs_section (s
->output_section
))
10246 /* Not sized yet. */
10249 else if (CONST_STRNEQ (s
->name
, ".rela"))
10253 if (s
!= htab
->elf
.srelplt
)
10256 /* We use the reloc_count field as a counter if we need
10257 to copy relocs into the output file. */
10258 s
->reloc_count
= 0;
10263 /* It's not one of our sections, so don't allocate space. */
10269 /* If we don't need this section, strip it from the
10270 output file. This is mostly to handle .rela.bss and
10271 .rela.plt. We must create both sections in
10272 create_dynamic_sections, because they must be created
10273 before the linker maps input sections to output
10274 sections. The linker does that before
10275 adjust_dynamic_symbol is called, and it is that
10276 function which decides whether anything needs to go
10277 into these sections. */
10278 s
->flags
|= SEC_EXCLUDE
;
10282 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10285 /* Allocate memory for the section contents. We use bfd_zalloc
10286 here in case unused entries are not reclaimed before the
10287 section's contents are written out. This should not happen,
10288 but this way if it does we get a R_PPC64_NONE reloc in .rela
10289 sections instead of garbage.
10290 We also rely on the section contents being zero when writing
10291 the GOT and .dynrelro. */
10292 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10293 if (s
->contents
== NULL
)
10297 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10299 if (!is_ppc64_elf (ibfd
))
10302 s
= ppc64_elf_tdata (ibfd
)->got
;
10303 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10306 s
->flags
|= SEC_EXCLUDE
;
10309 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10310 if (s
->contents
== NULL
)
10314 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10318 s
->flags
|= SEC_EXCLUDE
;
10321 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10322 if (s
->contents
== NULL
)
10325 s
->reloc_count
= 0;
10330 if (htab
->elf
.dynamic_sections_created
)
10332 bfd_boolean tls_opt
;
10334 /* Add some entries to the .dynamic section. We fill in the
10335 values later, in ppc64_elf_finish_dynamic_sections, but we
10336 must add the entries now so that we get the correct size for
10337 the .dynamic section. The DT_DEBUG entry is filled in by the
10338 dynamic linker and used by the debugger. */
10339 #define add_dynamic_entry(TAG, VAL) \
10340 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10342 if (bfd_link_executable (info
))
10344 if (!add_dynamic_entry (DT_DEBUG
, 0))
10348 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10350 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10351 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10352 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10353 || !add_dynamic_entry (DT_JMPREL
, 0)
10354 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10358 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10360 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10361 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10365 tls_opt
= (htab
->params
->tls_get_addr_opt
10366 && htab
->tls_get_addr_fd
!= NULL
10367 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10368 if (tls_opt
|| !htab
->opd_abi
)
10370 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10376 if (!add_dynamic_entry (DT_RELA
, 0)
10377 || !add_dynamic_entry (DT_RELASZ
, 0)
10378 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10381 /* If any dynamic relocs apply to a read-only section,
10382 then we need a DT_TEXTREL entry. */
10383 if ((info
->flags
& DF_TEXTREL
) == 0)
10384 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10386 if ((info
->flags
& DF_TEXTREL
) != 0)
10388 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10393 #undef add_dynamic_entry
10398 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10401 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10403 if (h
->plt
.plist
!= NULL
10405 && !h
->pointer_equality_needed
)
10408 return _bfd_elf_hash_symbol (h
);
10411 /* Determine the type of stub needed, if any, for a call. */
10413 static inline enum ppc_stub_type
10414 ppc_type_of_stub (asection
*input_sec
,
10415 const Elf_Internal_Rela
*rel
,
10416 struct ppc_link_hash_entry
**hash
,
10417 struct plt_entry
**plt_ent
,
10418 bfd_vma destination
,
10419 unsigned long local_off
)
10421 struct ppc_link_hash_entry
*h
= *hash
;
10423 bfd_vma branch_offset
;
10424 bfd_vma max_branch_offset
;
10425 enum elf_ppc64_reloc_type r_type
;
10429 struct plt_entry
*ent
;
10430 struct ppc_link_hash_entry
*fdh
= h
;
10432 && h
->oh
->is_func_descriptor
)
10434 fdh
= ppc_follow_link (h
->oh
);
10438 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10439 if (ent
->addend
== rel
->r_addend
10440 && ent
->plt
.offset
!= (bfd_vma
) -1)
10443 return ppc_stub_plt_call
;
10446 /* Here, we know we don't have a plt entry. If we don't have a
10447 either a defined function descriptor or a defined entry symbol
10448 in a regular object file, then it is pointless trying to make
10449 any other type of stub. */
10450 if (!is_static_defined (&fdh
->elf
)
10451 && !is_static_defined (&h
->elf
))
10452 return ppc_stub_none
;
10454 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10456 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10457 struct plt_entry
**local_plt
= (struct plt_entry
**)
10458 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10459 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10461 if (local_plt
[r_symndx
] != NULL
)
10463 struct plt_entry
*ent
;
10465 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10466 if (ent
->addend
== rel
->r_addend
10467 && ent
->plt
.offset
!= (bfd_vma
) -1)
10470 return ppc_stub_plt_call
;
10475 /* Determine where the call point is. */
10476 location
= (input_sec
->output_offset
10477 + input_sec
->output_section
->vma
10480 branch_offset
= destination
- location
;
10481 r_type
= ELF64_R_TYPE (rel
->r_info
);
10483 /* Determine if a long branch stub is needed. */
10484 max_branch_offset
= 1 << 25;
10485 if (r_type
!= R_PPC64_REL24
)
10486 max_branch_offset
= 1 << 15;
10488 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10489 /* We need a stub. Figure out whether a long_branch or plt_branch
10490 is needed later. */
10491 return ppc_stub_long_branch
;
10493 return ppc_stub_none
;
10496 /* With power7 weakly ordered memory model, it is possible for ld.so
10497 to update a plt entry in one thread and have another thread see a
10498 stale zero toc entry. To avoid this we need some sort of acquire
10499 barrier in the call stub. One solution is to make the load of the
10500 toc word seem to appear to depend on the load of the function entry
10501 word. Another solution is to test for r2 being zero, and branch to
10502 the appropriate glink entry if so.
10504 . fake dep barrier compare
10505 . ld 12,xxx(2) ld 12,xxx(2)
10506 . mtctr 12 mtctr 12
10507 . xor 11,12,12 ld 2,xxx+8(2)
10508 . add 2,2,11 cmpldi 2,0
10509 . ld 2,xxx+8(2) bnectr+
10510 . bctr b <glink_entry>
10512 The solution involving the compare turns out to be faster, so
10513 that's what we use unless the branch won't reach. */
10515 #define ALWAYS_USE_FAKE_DEP 0
10516 #define ALWAYS_EMIT_R2SAVE 0
10518 #define PPC_LO(v) ((v) & 0xffff)
10519 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10520 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10522 static inline unsigned int
10523 plt_stub_size (struct ppc_link_hash_table
*htab
,
10524 struct ppc_stub_hash_entry
*stub_entry
,
10527 unsigned size
= 12;
10529 if (ALWAYS_EMIT_R2SAVE
10530 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10532 if (PPC_HA (off
) != 0)
10537 if (htab
->params
->plt_static_chain
)
10539 if (htab
->params
->plt_thread_safe
10540 && htab
->elf
.dynamic_sections_created
10541 && stub_entry
->h
!= NULL
10542 && stub_entry
->h
->elf
.dynindx
!= -1)
10544 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10547 if (stub_entry
->h
!= NULL
10548 && (stub_entry
->h
== htab
->tls_get_addr_fd
10549 || stub_entry
->h
== htab
->tls_get_addr
)
10550 && htab
->params
->tls_get_addr_opt
)
10555 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10556 then return the padding needed to do so. */
10557 static inline unsigned int
10558 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10559 struct ppc_stub_hash_entry
*stub_entry
,
10562 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10563 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10564 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10566 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10567 > ((stub_size
- 1) & -stub_align
))
10568 return stub_align
- (stub_off
& (stub_align
- 1));
10572 /* Build a .plt call stub. */
10574 static inline bfd_byte
*
10575 build_plt_stub (struct ppc_link_hash_table
*htab
,
10576 struct ppc_stub_hash_entry
*stub_entry
,
10577 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10579 bfd
*obfd
= htab
->params
->stub_bfd
;
10580 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10581 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10582 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10583 && htab
->elf
.dynamic_sections_created
10584 && stub_entry
->h
!= NULL
10585 && stub_entry
->h
->elf
.dynindx
!= -1);
10586 bfd_boolean use_fake_dep
= plt_thread_safe
;
10587 bfd_vma cmp_branch_off
= 0;
10589 if (!ALWAYS_USE_FAKE_DEP
10592 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10593 || stub_entry
->h
== htab
->tls_get_addr
)
10594 && htab
->params
->tls_get_addr_opt
))
10596 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10597 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10598 / PLT_ENTRY_SIZE (htab
));
10599 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10602 if (pltindex
> 32768)
10603 glinkoff
+= (pltindex
- 32768) * 4;
10605 + htab
->glink
->output_offset
10606 + htab
->glink
->output_section
->vma
);
10607 from
= (p
- stub_entry
->group
->stub_sec
->contents
10608 + 4 * (ALWAYS_EMIT_R2SAVE
10609 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10610 + 4 * (PPC_HA (offset
) != 0)
10611 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10612 != PPC_HA (offset
))
10613 + 4 * (plt_static_chain
!= 0)
10615 + stub_entry
->group
->stub_sec
->output_offset
10616 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10617 cmp_branch_off
= to
- from
;
10618 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10621 if (PPC_HA (offset
) != 0)
10625 if (ALWAYS_EMIT_R2SAVE
10626 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10627 r
[0].r_offset
+= 4;
10628 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10629 r
[1].r_offset
= r
[0].r_offset
+ 4;
10630 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10631 r
[1].r_addend
= r
[0].r_addend
;
10634 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10636 r
[2].r_offset
= r
[1].r_offset
+ 4;
10637 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10638 r
[2].r_addend
= r
[0].r_addend
;
10642 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10643 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10644 r
[2].r_addend
= r
[0].r_addend
+ 8;
10645 if (plt_static_chain
)
10647 r
[3].r_offset
= r
[2].r_offset
+ 4;
10648 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10649 r
[3].r_addend
= r
[0].r_addend
+ 16;
10654 if (ALWAYS_EMIT_R2SAVE
10655 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10656 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10659 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10660 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10664 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10665 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10668 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10670 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10673 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10678 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10679 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10681 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10682 if (plt_static_chain
)
10683 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10690 if (ALWAYS_EMIT_R2SAVE
10691 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10692 r
[0].r_offset
+= 4;
10693 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10696 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10698 r
[1].r_offset
= r
[0].r_offset
+ 4;
10699 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10700 r
[1].r_addend
= r
[0].r_addend
;
10704 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10705 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10706 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10707 if (plt_static_chain
)
10709 r
[2].r_offset
= r
[1].r_offset
+ 4;
10710 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10711 r
[2].r_addend
= r
[0].r_addend
+ 8;
10716 if (ALWAYS_EMIT_R2SAVE
10717 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10718 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10719 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10721 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10723 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10726 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10731 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10732 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10734 if (plt_static_chain
)
10735 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10736 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10739 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10741 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10742 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10743 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10746 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10750 /* Build a special .plt call stub for __tls_get_addr. */
10752 #define LD_R11_0R3 0xe9630000
10753 #define LD_R12_0R3 0xe9830000
10754 #define MR_R0_R3 0x7c601b78
10755 #define CMPDI_R11_0 0x2c2b0000
10756 #define ADD_R3_R12_R13 0x7c6c6a14
10757 #define BEQLR 0x4d820020
10758 #define MR_R3_R0 0x7c030378
10759 #define STD_R11_0R1 0xf9610000
10760 #define BCTRL 0x4e800421
10761 #define LD_R11_0R1 0xe9610000
10762 #define MTLR_R11 0x7d6803a6
10764 static inline bfd_byte
*
10765 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10766 struct ppc_stub_hash_entry
*stub_entry
,
10767 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10769 bfd
*obfd
= htab
->params
->stub_bfd
;
10771 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10772 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10773 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10774 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10775 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10776 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10777 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10778 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10779 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10782 r
[0].r_offset
+= 9 * 4;
10783 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10784 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10786 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10787 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10788 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10789 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10794 static Elf_Internal_Rela
*
10795 get_relocs (asection
*sec
, int count
)
10797 Elf_Internal_Rela
*relocs
;
10798 struct bfd_elf_section_data
*elfsec_data
;
10800 elfsec_data
= elf_section_data (sec
);
10801 relocs
= elfsec_data
->relocs
;
10802 if (relocs
== NULL
)
10804 bfd_size_type relsize
;
10805 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10806 relocs
= bfd_alloc (sec
->owner
, relsize
);
10807 if (relocs
== NULL
)
10809 elfsec_data
->relocs
= relocs
;
10810 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10811 sizeof (Elf_Internal_Shdr
));
10812 if (elfsec_data
->rela
.hdr
== NULL
)
10814 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10815 * sizeof (Elf64_External_Rela
));
10816 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10817 sec
->reloc_count
= 0;
10819 relocs
+= sec
->reloc_count
;
10820 sec
->reloc_count
+= count
;
10825 get_r2off (struct bfd_link_info
*info
,
10826 struct ppc_stub_hash_entry
*stub_entry
)
10828 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10829 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10833 /* Support linking -R objects. Get the toc pointer from the
10836 if (!htab
->opd_abi
)
10838 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10839 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10841 if (strcmp (opd
->name
, ".opd") != 0
10842 || opd
->reloc_count
!= 0)
10844 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10845 stub_entry
->h
->elf
.root
.root
.string
);
10846 bfd_set_error (bfd_error_bad_value
);
10847 return (bfd_vma
) -1;
10849 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10850 return (bfd_vma
) -1;
10851 r2off
= bfd_get_64 (opd
->owner
, buf
);
10852 r2off
-= elf_gp (info
->output_bfd
);
10854 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10859 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10861 struct ppc_stub_hash_entry
*stub_entry
;
10862 struct ppc_branch_hash_entry
*br_entry
;
10863 struct bfd_link_info
*info
;
10864 struct ppc_link_hash_table
*htab
;
10869 Elf_Internal_Rela
*r
;
10872 /* Massage our args to the form they really have. */
10873 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10876 htab
= ppc_hash_table (info
);
10880 /* Make a note of the offset within the stubs for this entry. */
10881 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10882 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10884 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10885 switch (stub_entry
->stub_type
)
10887 case ppc_stub_long_branch
:
10888 case ppc_stub_long_branch_r2off
:
10889 /* Branches are relative. This is where we are going to. */
10890 dest
= (stub_entry
->target_value
10891 + stub_entry
->target_section
->output_offset
10892 + stub_entry
->target_section
->output_section
->vma
);
10893 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10896 /* And this is where we are coming from. */
10897 off
-= (stub_entry
->stub_offset
10898 + stub_entry
->group
->stub_sec
->output_offset
10899 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10902 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10904 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10906 if (r2off
== (bfd_vma
) -1)
10908 htab
->stub_error
= TRUE
;
10911 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10914 if (PPC_HA (r2off
) != 0)
10916 bfd_put_32 (htab
->params
->stub_bfd
,
10917 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10921 if (PPC_LO (r2off
) != 0)
10923 bfd_put_32 (htab
->params
->stub_bfd
,
10924 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10930 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10932 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10934 info
->callbacks
->einfo
10935 (_("%P: long branch stub `%s' offset overflow\n"),
10936 stub_entry
->root
.string
);
10937 htab
->stub_error
= TRUE
;
10941 if (info
->emitrelocations
)
10943 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
10946 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
10947 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10948 r
->r_addend
= dest
;
10949 if (stub_entry
->h
!= NULL
)
10951 struct elf_link_hash_entry
**hashes
;
10952 unsigned long symndx
;
10953 struct ppc_link_hash_entry
*h
;
10955 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10956 if (hashes
== NULL
)
10958 bfd_size_type hsize
;
10960 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10961 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10962 if (hashes
== NULL
)
10964 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10965 htab
->stub_globals
= 1;
10967 symndx
= htab
->stub_globals
++;
10969 hashes
[symndx
] = &h
->elf
;
10970 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10971 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10972 h
= ppc_follow_link (h
->oh
);
10973 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10974 /* H is an opd symbol. The addend must be zero. */
10978 off
= (h
->elf
.root
.u
.def
.value
10979 + h
->elf
.root
.u
.def
.section
->output_offset
10980 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10981 r
->r_addend
-= off
;
10987 case ppc_stub_plt_branch
:
10988 case ppc_stub_plt_branch_r2off
:
10989 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10990 stub_entry
->root
.string
+ 9,
10992 if (br_entry
== NULL
)
10994 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10995 stub_entry
->root
.string
);
10996 htab
->stub_error
= TRUE
;
11000 dest
= (stub_entry
->target_value
11001 + stub_entry
->target_section
->output_offset
11002 + stub_entry
->target_section
->output_section
->vma
);
11003 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11004 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11006 bfd_put_64 (htab
->brlt
->owner
, dest
,
11007 htab
->brlt
->contents
+ br_entry
->offset
);
11009 if (br_entry
->iter
== htab
->stub_iteration
)
11011 br_entry
->iter
= 0;
11013 if (htab
->relbrlt
!= NULL
)
11015 /* Create a reloc for the branch lookup table entry. */
11016 Elf_Internal_Rela rela
;
11019 rela
.r_offset
= (br_entry
->offset
11020 + htab
->brlt
->output_offset
11021 + htab
->brlt
->output_section
->vma
);
11022 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11023 rela
.r_addend
= dest
;
11025 rl
= htab
->relbrlt
->contents
;
11026 rl
+= (htab
->relbrlt
->reloc_count
++
11027 * sizeof (Elf64_External_Rela
));
11028 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
11030 else if (info
->emitrelocations
)
11032 r
= get_relocs (htab
->brlt
, 1);
11035 /* brlt, being SEC_LINKER_CREATED does not go through the
11036 normal reloc processing. Symbols and offsets are not
11037 translated from input file to output file form, so
11038 set up the offset per the output file. */
11039 r
->r_offset
= (br_entry
->offset
11040 + htab
->brlt
->output_offset
11041 + htab
->brlt
->output_section
->vma
);
11042 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11043 r
->r_addend
= dest
;
11047 dest
= (br_entry
->offset
11048 + htab
->brlt
->output_offset
11049 + htab
->brlt
->output_section
->vma
);
11052 - elf_gp (htab
->brlt
->output_section
->owner
)
11053 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11055 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11057 info
->callbacks
->einfo
11058 (_("%P: linkage table error against `%T'\n"),
11059 stub_entry
->root
.string
);
11060 bfd_set_error (bfd_error_bad_value
);
11061 htab
->stub_error
= TRUE
;
11065 if (info
->emitrelocations
)
11067 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11070 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11071 if (bfd_big_endian (info
->output_bfd
))
11072 r
[0].r_offset
+= 2;
11073 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11074 r
[0].r_offset
+= 4;
11075 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11076 r
[0].r_addend
= dest
;
11077 if (PPC_HA (off
) != 0)
11079 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11080 r
[1].r_offset
= r
[0].r_offset
+ 4;
11081 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11082 r
[1].r_addend
= r
[0].r_addend
;
11086 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11088 if (PPC_HA (off
) != 0)
11091 bfd_put_32 (htab
->params
->stub_bfd
,
11092 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11094 bfd_put_32 (htab
->params
->stub_bfd
,
11095 LD_R12_0R12
| PPC_LO (off
), loc
);
11100 bfd_put_32 (htab
->params
->stub_bfd
,
11101 LD_R12_0R2
| PPC_LO (off
), loc
);
11106 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11108 if (r2off
== (bfd_vma
) -1)
11110 htab
->stub_error
= TRUE
;
11114 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11117 if (PPC_HA (off
) != 0)
11120 bfd_put_32 (htab
->params
->stub_bfd
,
11121 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11123 bfd_put_32 (htab
->params
->stub_bfd
,
11124 LD_R12_0R12
| PPC_LO (off
), loc
);
11127 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11129 if (PPC_HA (r2off
) != 0)
11133 bfd_put_32 (htab
->params
->stub_bfd
,
11134 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11136 if (PPC_LO (r2off
) != 0)
11140 bfd_put_32 (htab
->params
->stub_bfd
,
11141 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11145 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11147 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11150 case ppc_stub_plt_call
:
11151 case ppc_stub_plt_call_r2save
:
11152 if (stub_entry
->h
!= NULL
11153 && stub_entry
->h
->is_func_descriptor
11154 && stub_entry
->h
->oh
!= NULL
)
11156 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11158 /* If the old-ABI "dot-symbol" is undefined make it weak so
11159 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11160 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11161 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11162 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11163 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11166 /* Now build the stub. */
11167 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11168 if (dest
>= (bfd_vma
) -2)
11171 plt
= htab
->elf
.splt
;
11172 if (!htab
->elf
.dynamic_sections_created
11173 || stub_entry
->h
== NULL
11174 || stub_entry
->h
->elf
.dynindx
== -1)
11175 plt
= htab
->elf
.iplt
;
11177 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11179 if (stub_entry
->h
== NULL
11180 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11182 Elf_Internal_Rela rela
;
11185 rela
.r_offset
= dest
;
11187 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11189 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11190 rela
.r_addend
= (stub_entry
->target_value
11191 + stub_entry
->target_section
->output_offset
11192 + stub_entry
->target_section
->output_section
->vma
);
11194 rl
= (htab
->elf
.irelplt
->contents
11195 + (htab
->elf
.irelplt
->reloc_count
++
11196 * sizeof (Elf64_External_Rela
)));
11197 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11198 stub_entry
->plt_ent
->plt
.offset
|= 1;
11199 htab
->local_ifunc_resolver
= 1;
11203 - elf_gp (plt
->output_section
->owner
)
11204 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11206 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11208 info
->callbacks
->einfo
11209 /* xgettext:c-format */
11210 (_("%P: linkage table error against `%T'\n"),
11211 stub_entry
->h
!= NULL
11212 ? stub_entry
->h
->elf
.root
.root
.string
11214 bfd_set_error (bfd_error_bad_value
);
11215 htab
->stub_error
= TRUE
;
11219 if (htab
->params
->plt_stub_align
!= 0)
11221 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11223 stub_entry
->group
->stub_sec
->size
+= pad
;
11224 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11229 if (info
->emitrelocations
)
11231 r
= get_relocs (stub_entry
->group
->stub_sec
,
11232 ((PPC_HA (off
) != 0)
11234 ? 2 + (htab
->params
->plt_static_chain
11235 && PPC_HA (off
+ 16) == PPC_HA (off
))
11239 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11240 if (bfd_big_endian (info
->output_bfd
))
11241 r
[0].r_offset
+= 2;
11242 r
[0].r_addend
= dest
;
11244 if (stub_entry
->h
!= NULL
11245 && (stub_entry
->h
== htab
->tls_get_addr_fd
11246 || stub_entry
->h
== htab
->tls_get_addr
)
11247 && htab
->params
->tls_get_addr_opt
)
11248 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11250 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11254 case ppc_stub_save_res
:
11262 stub_entry
->group
->stub_sec
->size
+= size
;
11264 if (htab
->params
->emit_stub_syms
)
11266 struct elf_link_hash_entry
*h
;
11269 const char *const stub_str
[] = { "long_branch",
11270 "long_branch_r2off",
11272 "plt_branch_r2off",
11276 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11277 len2
= strlen (stub_entry
->root
.string
);
11278 name
= bfd_malloc (len1
+ len2
+ 2);
11281 memcpy (name
, stub_entry
->root
.string
, 9);
11282 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11283 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11284 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11287 if (h
->root
.type
== bfd_link_hash_new
)
11289 h
->root
.type
= bfd_link_hash_defined
;
11290 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11291 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11292 h
->ref_regular
= 1;
11293 h
->def_regular
= 1;
11294 h
->ref_regular_nonweak
= 1;
11295 h
->forced_local
= 1;
11297 h
->root
.linker_def
= 1;
11304 /* As above, but don't actually build the stub. Just bump offset so
11305 we know stub section sizes, and select plt_branch stubs where
11306 long_branch stubs won't do. */
11309 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11311 struct ppc_stub_hash_entry
*stub_entry
;
11312 struct bfd_link_info
*info
;
11313 struct ppc_link_hash_table
*htab
;
11317 /* Massage our args to the form they really have. */
11318 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11321 htab
= ppc_hash_table (info
);
11325 if (stub_entry
->h
!= NULL
11326 && stub_entry
->h
->save_res
11327 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11328 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11330 /* Don't make stubs to out-of-line register save/restore
11331 functions. Instead, emit copies of the functions. */
11332 stub_entry
->group
->needs_save_res
= 1;
11333 stub_entry
->stub_type
= ppc_stub_save_res
;
11337 if (stub_entry
->stub_type
== ppc_stub_plt_call
11338 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11341 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11342 if (off
>= (bfd_vma
) -2)
11344 plt
= htab
->elf
.splt
;
11345 if (!htab
->elf
.dynamic_sections_created
11346 || stub_entry
->h
== NULL
11347 || stub_entry
->h
->elf
.dynindx
== -1)
11348 plt
= htab
->elf
.iplt
;
11349 off
+= (plt
->output_offset
11350 + plt
->output_section
->vma
11351 - elf_gp (plt
->output_section
->owner
)
11352 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11354 size
= plt_stub_size (htab
, stub_entry
, off
);
11355 if (htab
->params
->plt_stub_align
)
11356 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11357 if (info
->emitrelocations
)
11359 stub_entry
->group
->stub_sec
->reloc_count
11360 += ((PPC_HA (off
) != 0)
11362 ? 2 + (htab
->params
->plt_static_chain
11363 && PPC_HA (off
+ 16) == PPC_HA (off
))
11365 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11370 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11373 bfd_vma local_off
= 0;
11375 off
= (stub_entry
->target_value
11376 + stub_entry
->target_section
->output_offset
11377 + stub_entry
->target_section
->output_section
->vma
);
11378 off
-= (stub_entry
->group
->stub_sec
->size
11379 + stub_entry
->group
->stub_sec
->output_offset
11380 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11382 /* Reset the stub type from the plt variant in case we now
11383 can reach with a shorter stub. */
11384 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11385 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11388 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11390 r2off
= get_r2off (info
, stub_entry
);
11391 if (r2off
== (bfd_vma
) -1)
11393 htab
->stub_error
= TRUE
;
11397 if (PPC_HA (r2off
) != 0)
11399 if (PPC_LO (r2off
) != 0)
11404 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11406 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11407 Do the same for -R objects without function descriptors. */
11408 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11409 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11411 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11413 struct ppc_branch_hash_entry
*br_entry
;
11415 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11416 stub_entry
->root
.string
+ 9,
11418 if (br_entry
== NULL
)
11420 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11421 stub_entry
->root
.string
);
11422 htab
->stub_error
= TRUE
;
11426 if (br_entry
->iter
!= htab
->stub_iteration
)
11428 br_entry
->iter
= htab
->stub_iteration
;
11429 br_entry
->offset
= htab
->brlt
->size
;
11430 htab
->brlt
->size
+= 8;
11432 if (htab
->relbrlt
!= NULL
)
11433 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11434 else if (info
->emitrelocations
)
11436 htab
->brlt
->reloc_count
+= 1;
11437 htab
->brlt
->flags
|= SEC_RELOC
;
11441 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11442 off
= (br_entry
->offset
11443 + htab
->brlt
->output_offset
11444 + htab
->brlt
->output_section
->vma
11445 - elf_gp (htab
->brlt
->output_section
->owner
)
11446 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11448 if (info
->emitrelocations
)
11450 stub_entry
->group
->stub_sec
->reloc_count
11451 += 1 + (PPC_HA (off
) != 0);
11452 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11455 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11458 if (PPC_HA (off
) != 0)
11464 if (PPC_HA (off
) != 0)
11467 if (PPC_HA (r2off
) != 0)
11469 if (PPC_LO (r2off
) != 0)
11473 else if (info
->emitrelocations
)
11475 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11476 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11480 stub_entry
->group
->stub_sec
->size
+= size
;
11484 /* Set up various things so that we can make a list of input sections
11485 for each output section included in the link. Returns -1 on error,
11486 0 when no stubs will be needed, and 1 on success. */
11489 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11493 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11498 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11499 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11500 htab
->sec_info
= bfd_zmalloc (amt
);
11501 if (htab
->sec_info
== NULL
)
11504 /* Set toc_off for com, und, abs and ind sections. */
11505 for (id
= 0; id
< 3; id
++)
11506 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11511 /* Set up for first pass at multitoc partitioning. */
11514 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11516 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11518 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11519 htab
->toc_bfd
= NULL
;
11520 htab
->toc_first_sec
= NULL
;
11523 /* The linker repeatedly calls this function for each TOC input section
11524 and linker generated GOT section. Group input bfds such that the toc
11525 within a group is less than 64k in size. */
11528 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11530 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11531 bfd_vma addr
, off
, limit
;
11536 if (!htab
->second_toc_pass
)
11538 /* Keep track of the first .toc or .got section for this input bfd. */
11539 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11543 htab
->toc_bfd
= isec
->owner
;
11544 htab
->toc_first_sec
= isec
;
11547 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11548 off
= addr
- htab
->toc_curr
;
11549 limit
= 0x80008000;
11550 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11552 if (off
+ isec
->size
> limit
)
11554 addr
= (htab
->toc_first_sec
->output_offset
11555 + htab
->toc_first_sec
->output_section
->vma
);
11556 htab
->toc_curr
= addr
;
11557 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11560 /* toc_curr is the base address of this toc group. Set elf_gp
11561 for the input section to be the offset relative to the
11562 output toc base plus 0x8000. Making the input elf_gp an
11563 offset allows us to move the toc as a whole without
11564 recalculating input elf_gp. */
11565 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11566 off
+= TOC_BASE_OFF
;
11568 /* Die if someone uses a linker script that doesn't keep input
11569 file .toc and .got together. */
11571 && elf_gp (isec
->owner
) != 0
11572 && elf_gp (isec
->owner
) != off
)
11575 elf_gp (isec
->owner
) = off
;
11579 /* During the second pass toc_first_sec points to the start of
11580 a toc group, and toc_curr is used to track the old elf_gp.
11581 We use toc_bfd to ensure we only look at each bfd once. */
11582 if (htab
->toc_bfd
== isec
->owner
)
11584 htab
->toc_bfd
= isec
->owner
;
11586 if (htab
->toc_first_sec
== NULL
11587 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11589 htab
->toc_curr
= elf_gp (isec
->owner
);
11590 htab
->toc_first_sec
= isec
;
11592 addr
= (htab
->toc_first_sec
->output_offset
11593 + htab
->toc_first_sec
->output_section
->vma
);
11594 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11595 elf_gp (isec
->owner
) = off
;
11600 /* Called via elf_link_hash_traverse to merge GOT entries for global
11604 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11606 if (h
->root
.type
== bfd_link_hash_indirect
)
11609 merge_got_entries (&h
->got
.glist
);
11614 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11618 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11620 struct got_entry
*gent
;
11622 if (h
->root
.type
== bfd_link_hash_indirect
)
11625 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11626 if (!gent
->is_indirect
)
11627 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11631 /* Called on the first multitoc pass after the last call to
11632 ppc64_elf_next_toc_section. This function removes duplicate GOT
11636 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11638 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11639 struct bfd
*ibfd
, *ibfd2
;
11640 bfd_boolean done_something
;
11642 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11644 if (!htab
->do_multi_toc
)
11647 /* Merge global sym got entries within a toc group. */
11648 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11650 /* And tlsld_got. */
11651 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11653 struct got_entry
*ent
, *ent2
;
11655 if (!is_ppc64_elf (ibfd
))
11658 ent
= ppc64_tlsld_got (ibfd
);
11659 if (!ent
->is_indirect
11660 && ent
->got
.offset
!= (bfd_vma
) -1)
11662 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11664 if (!is_ppc64_elf (ibfd2
))
11667 ent2
= ppc64_tlsld_got (ibfd2
);
11668 if (!ent2
->is_indirect
11669 && ent2
->got
.offset
!= (bfd_vma
) -1
11670 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11672 ent2
->is_indirect
= TRUE
;
11673 ent2
->got
.ent
= ent
;
11679 /* Zap sizes of got sections. */
11680 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11681 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11682 htab
->got_reli_size
= 0;
11684 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11686 asection
*got
, *relgot
;
11688 if (!is_ppc64_elf (ibfd
))
11691 got
= ppc64_elf_tdata (ibfd
)->got
;
11694 got
->rawsize
= got
->size
;
11696 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11697 relgot
->rawsize
= relgot
->size
;
11702 /* Now reallocate the got, local syms first. We don't need to
11703 allocate section contents again since we never increase size. */
11704 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11706 struct got_entry
**lgot_ents
;
11707 struct got_entry
**end_lgot_ents
;
11708 struct plt_entry
**local_plt
;
11709 struct plt_entry
**end_local_plt
;
11710 unsigned char *lgot_masks
;
11711 bfd_size_type locsymcount
;
11712 Elf_Internal_Shdr
*symtab_hdr
;
11715 if (!is_ppc64_elf (ibfd
))
11718 lgot_ents
= elf_local_got_ents (ibfd
);
11722 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11723 locsymcount
= symtab_hdr
->sh_info
;
11724 end_lgot_ents
= lgot_ents
+ locsymcount
;
11725 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11726 end_local_plt
= local_plt
+ locsymcount
;
11727 lgot_masks
= (unsigned char *) end_local_plt
;
11728 s
= ppc64_elf_tdata (ibfd
)->got
;
11729 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11731 struct got_entry
*ent
;
11733 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11735 unsigned int ent_size
= 8;
11736 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11738 ent
->got
.offset
= s
->size
;
11739 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11744 s
->size
+= ent_size
;
11745 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11747 htab
->elf
.irelplt
->size
+= rel_size
;
11748 htab
->got_reli_size
+= rel_size
;
11750 else if (bfd_link_pic (info
))
11752 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11753 srel
->size
+= rel_size
;
11759 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11761 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11763 struct got_entry
*ent
;
11765 if (!is_ppc64_elf (ibfd
))
11768 ent
= ppc64_tlsld_got (ibfd
);
11769 if (!ent
->is_indirect
11770 && ent
->got
.offset
!= (bfd_vma
) -1)
11772 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11773 ent
->got
.offset
= s
->size
;
11775 if (bfd_link_pic (info
))
11777 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11778 srel
->size
+= sizeof (Elf64_External_Rela
);
11783 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11784 if (!done_something
)
11785 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11789 if (!is_ppc64_elf (ibfd
))
11792 got
= ppc64_elf_tdata (ibfd
)->got
;
11795 done_something
= got
->rawsize
!= got
->size
;
11796 if (done_something
)
11801 if (done_something
)
11802 (*htab
->params
->layout_sections_again
) ();
11804 /* Set up for second pass over toc sections to recalculate elf_gp
11805 on input sections. */
11806 htab
->toc_bfd
= NULL
;
11807 htab
->toc_first_sec
= NULL
;
11808 htab
->second_toc_pass
= TRUE
;
11809 return done_something
;
11812 /* Called after second pass of multitoc partitioning. */
11815 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11817 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11819 /* After the second pass, toc_curr tracks the TOC offset used
11820 for code sections below in ppc64_elf_next_input_section. */
11821 htab
->toc_curr
= TOC_BASE_OFF
;
11824 /* No toc references were found in ISEC. If the code in ISEC makes no
11825 calls, then there's no need to use toc adjusting stubs when branching
11826 into ISEC. Actually, indirect calls from ISEC are OK as they will
11827 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11828 needed, and 2 if a cyclical call-graph was found but no other reason
11829 for a stub was detected. If called from the top level, a return of
11830 2 means the same as a return of 0. */
11833 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11837 /* Mark this section as checked. */
11838 isec
->call_check_done
= 1;
11840 /* We know none of our code bearing sections will need toc stubs. */
11841 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11844 if (isec
->size
== 0)
11847 if (isec
->output_section
== NULL
)
11851 if (isec
->reloc_count
!= 0)
11853 Elf_Internal_Rela
*relstart
, *rel
;
11854 Elf_Internal_Sym
*local_syms
;
11855 struct ppc_link_hash_table
*htab
;
11857 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11858 info
->keep_memory
);
11859 if (relstart
== NULL
)
11862 /* Look for branches to outside of this section. */
11864 htab
= ppc_hash_table (info
);
11868 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11870 enum elf_ppc64_reloc_type r_type
;
11871 unsigned long r_symndx
;
11872 struct elf_link_hash_entry
*h
;
11873 struct ppc_link_hash_entry
*eh
;
11874 Elf_Internal_Sym
*sym
;
11876 struct _opd_sec_data
*opd
;
11880 r_type
= ELF64_R_TYPE (rel
->r_info
);
11881 if (r_type
!= R_PPC64_REL24
11882 && r_type
!= R_PPC64_REL14
11883 && r_type
!= R_PPC64_REL14_BRTAKEN
11884 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11887 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11888 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11895 /* Calls to dynamic lib functions go through a plt call stub
11897 eh
= (struct ppc_link_hash_entry
*) h
;
11899 && (eh
->elf
.plt
.plist
!= NULL
11901 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11907 if (sym_sec
== NULL
)
11908 /* Ignore other undefined symbols. */
11911 /* Assume branches to other sections not included in the
11912 link need stubs too, to cover -R and absolute syms. */
11913 if (sym_sec
->output_section
== NULL
)
11920 sym_value
= sym
->st_value
;
11923 if (h
->root
.type
!= bfd_link_hash_defined
11924 && h
->root
.type
!= bfd_link_hash_defweak
)
11926 sym_value
= h
->root
.u
.def
.value
;
11928 sym_value
+= rel
->r_addend
;
11930 /* If this branch reloc uses an opd sym, find the code section. */
11931 opd
= get_opd_info (sym_sec
);
11934 if (h
== NULL
&& opd
->adjust
!= NULL
)
11938 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
11940 /* Assume deleted functions won't ever be called. */
11942 sym_value
+= adjust
;
11945 dest
= opd_entry_value (sym_sec
, sym_value
,
11946 &sym_sec
, NULL
, FALSE
);
11947 if (dest
== (bfd_vma
) -1)
11952 + sym_sec
->output_offset
11953 + sym_sec
->output_section
->vma
);
11955 /* Ignore branch to self. */
11956 if (sym_sec
== isec
)
11959 /* If the called function uses the toc, we need a stub. */
11960 if (sym_sec
->has_toc_reloc
11961 || sym_sec
->makes_toc_func_call
)
11967 /* Assume any branch that needs a long branch stub might in fact
11968 need a plt_branch stub. A plt_branch stub uses r2. */
11969 else if (dest
- (isec
->output_offset
11970 + isec
->output_section
->vma
11971 + rel
->r_offset
) + (1 << 25)
11972 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11980 /* If calling back to a section in the process of being
11981 tested, we can't say for sure that no toc adjusting stubs
11982 are needed, so don't return zero. */
11983 else if (sym_sec
->call_check_in_progress
)
11986 /* Branches to another section that itself doesn't have any TOC
11987 references are OK. Recursively call ourselves to check. */
11988 else if (!sym_sec
->call_check_done
)
11992 /* Mark current section as indeterminate, so that other
11993 sections that call back to current won't be marked as
11995 isec
->call_check_in_progress
= 1;
11996 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11997 isec
->call_check_in_progress
= 0;
12008 if (local_syms
!= NULL
12009 && (elf_symtab_hdr (isec
->owner
).contents
12010 != (unsigned char *) local_syms
))
12012 if (elf_section_data (isec
)->relocs
!= relstart
)
12017 && isec
->map_head
.s
!= NULL
12018 && (strcmp (isec
->output_section
->name
, ".init") == 0
12019 || strcmp (isec
->output_section
->name
, ".fini") == 0))
12021 if (isec
->map_head
.s
->has_toc_reloc
12022 || isec
->map_head
.s
->makes_toc_func_call
)
12024 else if (!isec
->map_head
.s
->call_check_done
)
12027 isec
->call_check_in_progress
= 1;
12028 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
12029 isec
->call_check_in_progress
= 0;
12036 isec
->makes_toc_func_call
= 1;
12041 /* The linker repeatedly calls this function for each input section,
12042 in the order that input sections are linked into output sections.
12043 Build lists of input sections to determine groupings between which
12044 we may insert linker stubs. */
12047 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12049 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12054 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12055 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12057 /* This happens to make the list in reverse order,
12058 which is what we want. */
12059 htab
->sec_info
[isec
->id
].u
.list
12060 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12061 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12064 if (htab
->multi_toc_needed
)
12066 /* Analyse sections that aren't already flagged as needing a
12067 valid toc pointer. Exclude .fixup for the linux kernel.
12068 .fixup contains branches, but only back to the function that
12069 hit an exception. */
12070 if (!(isec
->has_toc_reloc
12071 || (isec
->flags
& SEC_CODE
) == 0
12072 || strcmp (isec
->name
, ".fixup") == 0
12073 || isec
->call_check_done
))
12075 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12078 /* Make all sections use the TOC assigned for this object file.
12079 This will be wrong for pasted sections; We fix that in
12080 check_pasted_section(). */
12081 if (elf_gp (isec
->owner
) != 0)
12082 htab
->toc_curr
= elf_gp (isec
->owner
);
12085 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12089 /* Check that all .init and .fini sections use the same toc, if they
12090 have toc relocs. */
12093 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12095 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12099 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12100 bfd_vma toc_off
= 0;
12103 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12104 if (i
->has_toc_reloc
)
12107 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12108 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12113 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12114 if (i
->makes_toc_func_call
)
12116 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12120 /* Make sure the whole pasted function uses the same toc offset. */
12122 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12123 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12129 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12131 return (check_pasted_section (info
, ".init")
12132 & check_pasted_section (info
, ".fini"));
12135 /* See whether we can group stub sections together. Grouping stub
12136 sections may result in fewer stubs. More importantly, we need to
12137 put all .init* and .fini* stubs at the beginning of the .init or
12138 .fini output sections respectively, because glibc splits the
12139 _init and _fini functions into multiple parts. Putting a stub in
12140 the middle of a function is not a good idea. */
12143 group_sections (struct bfd_link_info
*info
,
12144 bfd_size_type stub_group_size
,
12145 bfd_boolean stubs_always_before_branch
)
12147 struct ppc_link_hash_table
*htab
;
12149 bfd_boolean suppress_size_errors
;
12151 htab
= ppc_hash_table (info
);
12155 suppress_size_errors
= FALSE
;
12156 if (stub_group_size
== 1)
12158 /* Default values. */
12159 if (stubs_always_before_branch
)
12160 stub_group_size
= 0x1e00000;
12162 stub_group_size
= 0x1c00000;
12163 suppress_size_errors
= TRUE
;
12166 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12170 if (osec
->id
>= htab
->sec_info_arr_size
)
12173 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12174 while (tail
!= NULL
)
12178 bfd_size_type total
;
12179 bfd_boolean big_sec
;
12181 struct map_stub
*group
;
12182 bfd_size_type group_size
;
12185 total
= tail
->size
;
12186 group_size
= (ppc64_elf_section_data (tail
) != NULL
12187 && ppc64_elf_section_data (tail
)->has_14bit_branch
12188 ? stub_group_size
>> 10 : stub_group_size
);
12190 big_sec
= total
> group_size
;
12191 if (big_sec
&& !suppress_size_errors
)
12192 /* xgettext:c-format */
12193 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12194 tail
->owner
, tail
);
12195 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12197 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12198 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12199 < (ppc64_elf_section_data (prev
) != NULL
12200 && ppc64_elf_section_data (prev
)->has_14bit_branch
12201 ? (group_size
= stub_group_size
>> 10) : group_size
))
12202 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12205 /* OK, the size from the start of CURR to the end is less
12206 than group_size and thus can be handled by one stub
12207 section. (or the tail section is itself larger than
12208 group_size, in which case we may be toast.) We should
12209 really be keeping track of the total size of stubs added
12210 here, as stubs contribute to the final output section
12211 size. That's a little tricky, and this way will only
12212 break if stubs added make the total size more than 2^25,
12213 ie. for the default stub_group_size, if stubs total more
12214 than 2097152 bytes, or nearly 75000 plt call stubs. */
12215 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12218 group
->link_sec
= curr
;
12219 group
->stub_sec
= NULL
;
12220 group
->needs_save_res
= 0;
12221 group
->next
= htab
->group
;
12222 htab
->group
= group
;
12225 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12226 /* Set up this stub group. */
12227 htab
->sec_info
[tail
->id
].u
.group
= group
;
12229 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12231 /* But wait, there's more! Input sections up to group_size
12232 bytes before the stub section can be handled by it too.
12233 Don't do this if we have a really large section after the
12234 stubs, as adding more stubs increases the chance that
12235 branches may not reach into the stub section. */
12236 if (!stubs_always_before_branch
&& !big_sec
)
12239 while (prev
!= NULL
12240 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12241 < (ppc64_elf_section_data (prev
) != NULL
12242 && ppc64_elf_section_data (prev
)->has_14bit_branch
12243 ? (group_size
= stub_group_size
>> 10) : group_size
))
12244 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12247 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12248 htab
->sec_info
[tail
->id
].u
.group
= group
;
12257 static const unsigned char glink_eh_frame_cie
[] =
12259 0, 0, 0, 16, /* length. */
12260 0, 0, 0, 0, /* id. */
12261 1, /* CIE version. */
12262 'z', 'R', 0, /* Augmentation string. */
12263 4, /* Code alignment. */
12264 0x78, /* Data alignment. */
12266 1, /* Augmentation size. */
12267 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12268 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12271 /* Stripping output sections is normally done before dynamic section
12272 symbols have been allocated. This function is called later, and
12273 handles cases like htab->brlt which is mapped to its own output
12277 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12279 if (isec
->size
== 0
12280 && isec
->output_section
->size
== 0
12281 && !(isec
->output_section
->flags
& SEC_KEEP
)
12282 && !bfd_section_removed_from_list (info
->output_bfd
,
12283 isec
->output_section
)
12284 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12286 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12287 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12288 info
->output_bfd
->section_count
--;
12292 /* Determine and set the size of the stub section for a final link.
12294 The basic idea here is to examine all the relocations looking for
12295 PC-relative calls to a target that is unreachable with a "bl"
12299 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12301 bfd_size_type stub_group_size
;
12302 bfd_boolean stubs_always_before_branch
;
12303 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12308 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12309 htab
->params
->plt_thread_safe
= 1;
12310 if (!htab
->opd_abi
)
12311 htab
->params
->plt_thread_safe
= 0;
12312 else if (htab
->params
->plt_thread_safe
== -1)
12314 static const char *const thread_starter
[] =
12318 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12320 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12321 "mq_notify", "create_timer",
12326 "GOMP_parallel_start",
12327 "GOMP_parallel_loop_static",
12328 "GOMP_parallel_loop_static_start",
12329 "GOMP_parallel_loop_dynamic",
12330 "GOMP_parallel_loop_dynamic_start",
12331 "GOMP_parallel_loop_guided",
12332 "GOMP_parallel_loop_guided_start",
12333 "GOMP_parallel_loop_runtime",
12334 "GOMP_parallel_loop_runtime_start",
12335 "GOMP_parallel_sections",
12336 "GOMP_parallel_sections_start",
12342 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12344 struct elf_link_hash_entry
*h
;
12345 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12346 FALSE
, FALSE
, TRUE
);
12347 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12348 if (htab
->params
->plt_thread_safe
)
12352 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12353 if (htab
->params
->group_size
< 0)
12354 stub_group_size
= -htab
->params
->group_size
;
12356 stub_group_size
= htab
->params
->group_size
;
12358 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12361 #define STUB_SHRINK_ITER 20
12362 /* Loop until no stubs added. After iteration 20 of this loop we may
12363 exit on a stub section shrinking. This is to break out of a
12364 pathological case where adding stubs on one iteration decreases
12365 section gaps (perhaps due to alignment), which then requires
12366 fewer or smaller stubs on the next iteration. */
12371 unsigned int bfd_indx
;
12372 struct map_stub
*group
;
12373 asection
*stub_sec
;
12375 htab
->stub_iteration
+= 1;
12377 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12379 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12381 Elf_Internal_Shdr
*symtab_hdr
;
12383 Elf_Internal_Sym
*local_syms
= NULL
;
12385 if (!is_ppc64_elf (input_bfd
))
12388 /* We'll need the symbol table in a second. */
12389 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12390 if (symtab_hdr
->sh_info
== 0)
12393 /* Walk over each section attached to the input bfd. */
12394 for (section
= input_bfd
->sections
;
12396 section
= section
->next
)
12398 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12400 /* If there aren't any relocs, then there's nothing more
12402 if ((section
->flags
& SEC_RELOC
) == 0
12403 || (section
->flags
& SEC_ALLOC
) == 0
12404 || (section
->flags
& SEC_LOAD
) == 0
12405 || (section
->flags
& SEC_CODE
) == 0
12406 || section
->reloc_count
== 0)
12409 /* If this section is a link-once section that will be
12410 discarded, then don't create any stubs. */
12411 if (section
->output_section
== NULL
12412 || section
->output_section
->owner
!= info
->output_bfd
)
12415 /* Get the relocs. */
12417 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12418 info
->keep_memory
);
12419 if (internal_relocs
== NULL
)
12420 goto error_ret_free_local
;
12422 /* Now examine each relocation. */
12423 irela
= internal_relocs
;
12424 irelaend
= irela
+ section
->reloc_count
;
12425 for (; irela
< irelaend
; irela
++)
12427 enum elf_ppc64_reloc_type r_type
;
12428 unsigned int r_indx
;
12429 enum ppc_stub_type stub_type
;
12430 struct ppc_stub_hash_entry
*stub_entry
;
12431 asection
*sym_sec
, *code_sec
;
12432 bfd_vma sym_value
, code_value
;
12433 bfd_vma destination
;
12434 unsigned long local_off
;
12435 bfd_boolean ok_dest
;
12436 struct ppc_link_hash_entry
*hash
;
12437 struct ppc_link_hash_entry
*fdh
;
12438 struct elf_link_hash_entry
*h
;
12439 Elf_Internal_Sym
*sym
;
12441 const asection
*id_sec
;
12442 struct _opd_sec_data
*opd
;
12443 struct plt_entry
*plt_ent
;
12445 r_type
= ELF64_R_TYPE (irela
->r_info
);
12446 r_indx
= ELF64_R_SYM (irela
->r_info
);
12448 if (r_type
>= R_PPC64_max
)
12450 bfd_set_error (bfd_error_bad_value
);
12451 goto error_ret_free_internal
;
12454 /* Only look for stubs on branch instructions. */
12455 if (r_type
!= R_PPC64_REL24
12456 && r_type
!= R_PPC64_REL14
12457 && r_type
!= R_PPC64_REL14_BRTAKEN
12458 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12461 /* Now determine the call target, its name, value,
12463 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12464 r_indx
, input_bfd
))
12465 goto error_ret_free_internal
;
12466 hash
= (struct ppc_link_hash_entry
*) h
;
12473 sym_value
= sym
->st_value
;
12474 if (sym_sec
!= NULL
12475 && sym_sec
->output_section
!= NULL
)
12478 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12479 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12481 sym_value
= hash
->elf
.root
.u
.def
.value
;
12482 if (sym_sec
->output_section
!= NULL
)
12485 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12486 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12488 /* Recognise an old ABI func code entry sym, and
12489 use the func descriptor sym instead if it is
12491 if (hash
->elf
.root
.root
.string
[0] == '.'
12492 && hash
->oh
!= NULL
)
12494 fdh
= ppc_follow_link (hash
->oh
);
12495 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12496 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12498 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12499 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12500 if (sym_sec
->output_section
!= NULL
)
12509 bfd_set_error (bfd_error_bad_value
);
12510 goto error_ret_free_internal
;
12517 sym_value
+= irela
->r_addend
;
12518 destination
= (sym_value
12519 + sym_sec
->output_offset
12520 + sym_sec
->output_section
->vma
);
12521 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12526 code_sec
= sym_sec
;
12527 code_value
= sym_value
;
12528 opd
= get_opd_info (sym_sec
);
12533 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12535 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12538 code_value
+= adjust
;
12539 sym_value
+= adjust
;
12541 dest
= opd_entry_value (sym_sec
, sym_value
,
12542 &code_sec
, &code_value
, FALSE
);
12543 if (dest
!= (bfd_vma
) -1)
12545 destination
= dest
;
12548 /* Fixup old ABI sym to point at code
12550 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12551 hash
->elf
.root
.u
.def
.section
= code_sec
;
12552 hash
->elf
.root
.u
.def
.value
= code_value
;
12557 /* Determine what (if any) linker stub is needed. */
12559 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12560 &plt_ent
, destination
,
12563 if (stub_type
!= ppc_stub_plt_call
)
12565 /* Check whether we need a TOC adjusting stub.
12566 Since the linker pastes together pieces from
12567 different object files when creating the
12568 _init and _fini functions, it may be that a
12569 call to what looks like a local sym is in
12570 fact a call needing a TOC adjustment. */
12571 if (code_sec
!= NULL
12572 && code_sec
->output_section
!= NULL
12573 && (htab
->sec_info
[code_sec
->id
].toc_off
12574 != htab
->sec_info
[section
->id
].toc_off
)
12575 && (code_sec
->has_toc_reloc
12576 || code_sec
->makes_toc_func_call
))
12577 stub_type
= ppc_stub_long_branch_r2off
;
12580 if (stub_type
== ppc_stub_none
)
12583 /* __tls_get_addr calls might be eliminated. */
12584 if (stub_type
!= ppc_stub_plt_call
12586 && (hash
== htab
->tls_get_addr
12587 || hash
== htab
->tls_get_addr_fd
)
12588 && section
->has_tls_reloc
12589 && irela
!= internal_relocs
)
12591 /* Get tls info. */
12592 unsigned char *tls_mask
;
12594 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12595 irela
- 1, input_bfd
))
12596 goto error_ret_free_internal
;
12597 if (*tls_mask
!= 0)
12601 if (stub_type
== ppc_stub_plt_call
12602 && irela
+ 1 < irelaend
12603 && irela
[1].r_offset
== irela
->r_offset
+ 4
12604 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12606 if (!tocsave_find (htab
, INSERT
,
12607 &local_syms
, irela
+ 1, input_bfd
))
12608 goto error_ret_free_internal
;
12610 else if (stub_type
== ppc_stub_plt_call
)
12611 stub_type
= ppc_stub_plt_call_r2save
;
12613 /* Support for grouping stub sections. */
12614 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12616 /* Get the name of this stub. */
12617 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12619 goto error_ret_free_internal
;
12621 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12622 stub_name
, FALSE
, FALSE
);
12623 if (stub_entry
!= NULL
)
12625 /* The proper stub has already been created. */
12627 if (stub_type
== ppc_stub_plt_call_r2save
)
12628 stub_entry
->stub_type
= stub_type
;
12632 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12633 if (stub_entry
== NULL
)
12636 error_ret_free_internal
:
12637 if (elf_section_data (section
)->relocs
== NULL
)
12638 free (internal_relocs
);
12639 error_ret_free_local
:
12640 if (local_syms
!= NULL
12641 && (symtab_hdr
->contents
12642 != (unsigned char *) local_syms
))
12647 stub_entry
->stub_type
= stub_type
;
12648 if (stub_type
!= ppc_stub_plt_call
12649 && stub_type
!= ppc_stub_plt_call_r2save
)
12651 stub_entry
->target_value
= code_value
;
12652 stub_entry
->target_section
= code_sec
;
12656 stub_entry
->target_value
= sym_value
;
12657 stub_entry
->target_section
= sym_sec
;
12659 stub_entry
->h
= hash
;
12660 stub_entry
->plt_ent
= plt_ent
;
12661 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12663 if (stub_entry
->h
!= NULL
)
12664 htab
->stub_globals
+= 1;
12667 /* We're done with the internal relocs, free them. */
12668 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12669 free (internal_relocs
);
12672 if (local_syms
!= NULL
12673 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12675 if (!info
->keep_memory
)
12678 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12682 /* We may have added some stubs. Find out the new size of the
12684 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12686 stub_sec
= stub_sec
->next
)
12687 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12689 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12690 || stub_sec
->rawsize
< stub_sec
->size
)
12691 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12692 stub_sec
->rawsize
= stub_sec
->size
;
12693 stub_sec
->size
= 0;
12694 stub_sec
->reloc_count
= 0;
12695 stub_sec
->flags
&= ~SEC_RELOC
;
12698 htab
->brlt
->size
= 0;
12699 htab
->brlt
->reloc_count
= 0;
12700 htab
->brlt
->flags
&= ~SEC_RELOC
;
12701 if (htab
->relbrlt
!= NULL
)
12702 htab
->relbrlt
->size
= 0;
12704 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12706 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12707 if (group
->needs_save_res
)
12708 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12710 if (info
->emitrelocations
12711 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12713 htab
->glink
->reloc_count
= 1;
12714 htab
->glink
->flags
|= SEC_RELOC
;
12717 if (htab
->glink_eh_frame
!= NULL
12718 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12719 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12721 size_t size
= 0, align
= 4;
12723 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12725 stub_sec
= stub_sec
->next
)
12726 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12727 size
+= (17 + align
- 1) & -align
;
12728 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12729 size
+= (24 + align
- 1) & -align
;
12731 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12732 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12733 size
= (size
+ align
- 1) & -align
;
12734 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12735 htab
->glink_eh_frame
->size
= size
;
12738 if (htab
->params
->plt_stub_align
!= 0)
12739 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12741 stub_sec
= stub_sec
->next
)
12742 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12743 stub_sec
->size
= ((stub_sec
->size
12744 + (1 << htab
->params
->plt_stub_align
) - 1)
12745 & -(1 << htab
->params
->plt_stub_align
));
12747 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12749 stub_sec
= stub_sec
->next
)
12750 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12751 && stub_sec
->rawsize
!= stub_sec
->size
12752 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12753 || stub_sec
->rawsize
< stub_sec
->size
))
12756 if (stub_sec
== NULL
12757 && (htab
->glink_eh_frame
== NULL
12758 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12761 /* Ask the linker to do its stuff. */
12762 (*htab
->params
->layout_sections_again
) ();
12765 if (htab
->glink_eh_frame
!= NULL
12766 && htab
->glink_eh_frame
->size
!= 0)
12769 bfd_byte
*p
, *last_fde
;
12770 size_t last_fde_len
, size
, align
, pad
;
12771 asection
*stub_sec
;
12773 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12776 htab
->glink_eh_frame
->contents
= p
;
12780 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12781 /* CIE length (rewrite in case little-endian). */
12782 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12783 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12784 p
+= last_fde_len
+ 4;
12786 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12788 stub_sec
= stub_sec
->next
)
12789 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12792 last_fde_len
= ((17 + align
- 1) & -align
) - 4;
12794 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12797 val
= p
- htab
->glink_eh_frame
->contents
;
12798 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12800 /* Offset to stub section, written later. */
12802 /* stub section size. */
12803 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12805 /* Augmentation. */
12808 p
+= ((17 + align
- 1) & -align
) - 17;
12810 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12813 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12815 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12818 val
= p
- htab
->glink_eh_frame
->contents
;
12819 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12821 /* Offset to .glink, written later. */
12824 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12826 /* Augmentation. */
12829 *p
++ = DW_CFA_advance_loc
+ 1;
12830 *p
++ = DW_CFA_register
;
12832 *p
++ = htab
->opd_abi
? 12 : 0;
12833 *p
++ = DW_CFA_advance_loc
+ 4;
12834 *p
++ = DW_CFA_restore_extended
;
12836 p
+= ((24 + align
- 1) & -align
) - 24;
12838 /* Subsume any padding into the last FDE if user .eh_frame
12839 sections are aligned more than glink_eh_frame. Otherwise any
12840 zero padding will be seen as a terminator. */
12841 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12842 size
= p
- htab
->glink_eh_frame
->contents
;
12843 pad
= ((size
+ align
- 1) & -align
) - size
;
12844 htab
->glink_eh_frame
->size
= size
+ pad
;
12845 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12848 maybe_strip_output (info
, htab
->brlt
);
12849 if (htab
->glink_eh_frame
!= NULL
)
12850 maybe_strip_output (info
, htab
->glink_eh_frame
);
12855 /* Called after we have determined section placement. If sections
12856 move, we'll be called again. Provide a value for TOCstart. */
12859 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12862 bfd_vma TOCstart
, adjust
;
12866 struct elf_link_hash_entry
*h
;
12867 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12869 if (is_elf_hash_table (htab
)
12870 && htab
->hgot
!= NULL
)
12874 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12875 if (is_elf_hash_table (htab
))
12879 && h
->root
.type
== bfd_link_hash_defined
12880 && !h
->root
.linker_def
12881 && (!is_elf_hash_table (htab
)
12882 || h
->def_regular
))
12884 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
12885 + h
->root
.u
.def
.section
->output_offset
12886 + h
->root
.u
.def
.section
->output_section
->vma
);
12887 _bfd_set_gp_value (obfd
, TOCstart
);
12892 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12893 order. The TOC starts where the first of these sections starts. */
12894 s
= bfd_get_section_by_name (obfd
, ".got");
12895 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12896 s
= bfd_get_section_by_name (obfd
, ".toc");
12897 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12898 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12899 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12900 s
= bfd_get_section_by_name (obfd
, ".plt");
12901 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12903 /* This may happen for
12904 o references to TOC base (SYM@toc / TOC[tc0]) without a
12906 o bad linker script
12907 o --gc-sections and empty TOC sections
12909 FIXME: Warn user? */
12911 /* Look for a likely section. We probably won't even be
12913 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12914 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12916 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12919 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12920 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12921 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12924 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12925 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12929 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12930 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12936 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12938 /* Force alignment. */
12939 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
12940 TOCstart
-= adjust
;
12941 _bfd_set_gp_value (obfd
, TOCstart
);
12943 if (info
!= NULL
&& s
!= NULL
)
12945 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12949 if (htab
->elf
.hgot
!= NULL
)
12951 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
12952 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12957 struct bfd_link_hash_entry
*bh
= NULL
;
12958 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12959 s
, TOC_BASE_OFF
- adjust
,
12960 NULL
, FALSE
, FALSE
, &bh
);
12966 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12967 write out any global entry stubs. */
12970 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12972 struct bfd_link_info
*info
;
12973 struct ppc_link_hash_table
*htab
;
12974 struct plt_entry
*pent
;
12977 if (h
->root
.type
== bfd_link_hash_indirect
)
12980 if (!h
->pointer_equality_needed
)
12983 if (h
->def_regular
)
12987 htab
= ppc_hash_table (info
);
12992 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12993 if (pent
->plt
.offset
!= (bfd_vma
) -1
12994 && pent
->addend
== 0)
13000 p
= s
->contents
+ h
->root
.u
.def
.value
;
13001 plt
= htab
->elf
.splt
;
13002 if (!htab
->elf
.dynamic_sections_created
13003 || h
->dynindx
== -1)
13004 plt
= htab
->elf
.iplt
;
13005 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13006 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13008 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13010 info
->callbacks
->einfo
13011 (_("%P: linkage table error against `%T'\n"),
13012 h
->root
.root
.string
);
13013 bfd_set_error (bfd_error_bad_value
);
13014 htab
->stub_error
= TRUE
;
13017 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13018 if (htab
->params
->emit_stub_syms
)
13020 size_t len
= strlen (h
->root
.root
.string
);
13021 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13026 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13027 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13030 if (h
->root
.type
== bfd_link_hash_new
)
13032 h
->root
.type
= bfd_link_hash_defined
;
13033 h
->root
.u
.def
.section
= s
;
13034 h
->root
.u
.def
.value
= p
- s
->contents
;
13035 h
->ref_regular
= 1;
13036 h
->def_regular
= 1;
13037 h
->ref_regular_nonweak
= 1;
13038 h
->forced_local
= 1;
13040 h
->root
.linker_def
= 1;
13044 if (PPC_HA (off
) != 0)
13046 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13049 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13051 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13053 bfd_put_32 (s
->owner
, BCTR
, p
);
13059 /* Build all the stubs associated with the current output file.
13060 The stubs are kept in a hash table attached to the main linker
13061 hash table. This function is called via gldelf64ppc_finish. */
13064 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13067 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13068 struct map_stub
*group
;
13069 asection
*stub_sec
;
13071 int stub_sec_count
= 0;
13076 /* Allocate memory to hold the linker stubs. */
13077 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13079 stub_sec
= stub_sec
->next
)
13080 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
13081 && stub_sec
->size
!= 0)
13083 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13084 if (stub_sec
->contents
== NULL
)
13086 stub_sec
->size
= 0;
13089 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13094 /* Build the .glink plt call stub. */
13095 if (htab
->params
->emit_stub_syms
)
13097 struct elf_link_hash_entry
*h
;
13098 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13099 TRUE
, FALSE
, FALSE
);
13102 if (h
->root
.type
== bfd_link_hash_new
)
13104 h
->root
.type
= bfd_link_hash_defined
;
13105 h
->root
.u
.def
.section
= htab
->glink
;
13106 h
->root
.u
.def
.value
= 8;
13107 h
->ref_regular
= 1;
13108 h
->def_regular
= 1;
13109 h
->ref_regular_nonweak
= 1;
13110 h
->forced_local
= 1;
13112 h
->root
.linker_def
= 1;
13115 plt0
= (htab
->elf
.splt
->output_section
->vma
13116 + htab
->elf
.splt
->output_offset
13118 if (info
->emitrelocations
)
13120 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13123 r
->r_offset
= (htab
->glink
->output_offset
13124 + htab
->glink
->output_section
->vma
);
13125 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13126 r
->r_addend
= plt0
;
13128 p
= htab
->glink
->contents
;
13129 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13130 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13134 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13136 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13138 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13140 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13142 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13144 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13146 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13148 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13150 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13152 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13157 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13159 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13161 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13163 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13165 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13167 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13169 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13171 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13173 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13175 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13177 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13179 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13182 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13184 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13186 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13190 /* Build the .glink lazy link call stubs. */
13192 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13198 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13203 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13205 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13210 bfd_put_32 (htab
->glink
->owner
,
13211 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13216 /* Build .glink global entry stubs. */
13217 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13218 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13221 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13223 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13225 if (htab
->brlt
->contents
== NULL
)
13228 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13230 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13231 htab
->relbrlt
->size
);
13232 if (htab
->relbrlt
->contents
== NULL
)
13236 /* Build the stubs as directed by the stub hash table. */
13237 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13239 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13240 if (group
->needs_save_res
)
13242 stub_sec
= group
->stub_sec
;
13243 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13245 if (htab
->params
->emit_stub_syms
)
13249 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13250 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13253 stub_sec
->size
+= htab
->sfpr
->size
;
13256 if (htab
->relbrlt
!= NULL
)
13257 htab
->relbrlt
->reloc_count
= 0;
13259 if (htab
->params
->plt_stub_align
!= 0)
13260 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13262 stub_sec
= stub_sec
->next
)
13263 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13264 stub_sec
->size
= ((stub_sec
->size
13265 + (1 << htab
->params
->plt_stub_align
) - 1)
13266 & -(1 << htab
->params
->plt_stub_align
));
13268 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
13270 stub_sec
= stub_sec
->next
)
13271 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
13273 stub_sec_count
+= 1;
13274 if (stub_sec
->rawsize
!= stub_sec
->size
13275 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13276 || stub_sec
->rawsize
< stub_sec
->size
))
13280 /* Note that the glink_eh_frame check here is not only testing that
13281 the generated size matched the calculated size but also that
13282 bfd_elf_discard_info didn't make any changes to the section. */
13283 if (stub_sec
!= NULL
13284 || (htab
->glink_eh_frame
!= NULL
13285 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13287 htab
->stub_error
= TRUE
;
13288 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13291 if (htab
->stub_error
)
13296 *stats
= bfd_malloc (500);
13297 if (*stats
== NULL
)
13300 sprintf (*stats
, _("linker stubs in %u group%s\n"
13302 " toc adjust %lu\n"
13303 " long branch %lu\n"
13304 " long toc adj %lu\n"
13306 " plt call toc %lu\n"
13307 " global entry %lu"),
13309 stub_sec_count
== 1 ? "" : "s",
13310 htab
->stub_count
[ppc_stub_long_branch
- 1],
13311 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13312 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13313 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13314 htab
->stub_count
[ppc_stub_plt_call
- 1],
13315 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13316 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13321 /* What to do when ld finds relocations against symbols defined in
13322 discarded sections. */
13324 static unsigned int
13325 ppc64_elf_action_discarded (asection
*sec
)
13327 if (strcmp (".opd", sec
->name
) == 0)
13330 if (strcmp (".toc", sec
->name
) == 0)
13333 if (strcmp (".toc1", sec
->name
) == 0)
13336 return _bfd_elf_default_action_discarded (sec
);
13339 /* The RELOCATE_SECTION function is called by the ELF backend linker
13340 to handle the relocations for a section.
13342 The relocs are always passed as Rela structures; if the section
13343 actually uses Rel structures, the r_addend field will always be
13346 This function is responsible for adjust the section contents as
13347 necessary, and (if using Rela relocs and generating a
13348 relocatable output file) adjusting the reloc addend as
13351 This function does not have to worry about setting the reloc
13352 address or the reloc symbol index.
13354 LOCAL_SYMS is a pointer to the swapped in local symbols.
13356 LOCAL_SECTIONS is an array giving the section in the input file
13357 corresponding to the st_shndx field of each local symbol.
13359 The global hash table entry for the global symbols can be found
13360 via elf_sym_hashes (input_bfd).
13362 When generating relocatable output, this function must handle
13363 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13364 going to be the section symbol corresponding to the output
13365 section, which means that the addend must be adjusted
13369 ppc64_elf_relocate_section (bfd
*output_bfd
,
13370 struct bfd_link_info
*info
,
13372 asection
*input_section
,
13373 bfd_byte
*contents
,
13374 Elf_Internal_Rela
*relocs
,
13375 Elf_Internal_Sym
*local_syms
,
13376 asection
**local_sections
)
13378 struct ppc_link_hash_table
*htab
;
13379 Elf_Internal_Shdr
*symtab_hdr
;
13380 struct elf_link_hash_entry
**sym_hashes
;
13381 Elf_Internal_Rela
*rel
;
13382 Elf_Internal_Rela
*wrel
;
13383 Elf_Internal_Rela
*relend
;
13384 Elf_Internal_Rela outrel
;
13386 struct got_entry
**local_got_ents
;
13388 bfd_boolean ret
= TRUE
;
13389 bfd_boolean is_opd
;
13390 /* Assume 'at' branch hints. */
13391 bfd_boolean is_isa_v2
= TRUE
;
13392 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13394 /* Initialize howto table if needed. */
13395 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13398 htab
= ppc_hash_table (info
);
13402 /* Don't relocate stub sections. */
13403 if (input_section
->owner
== htab
->params
->stub_bfd
)
13406 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13408 local_got_ents
= elf_local_got_ents (input_bfd
);
13409 TOCstart
= elf_gp (output_bfd
);
13410 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13411 sym_hashes
= elf_sym_hashes (input_bfd
);
13412 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13414 rel
= wrel
= relocs
;
13415 relend
= relocs
+ input_section
->reloc_count
;
13416 for (; rel
< relend
; wrel
++, rel
++)
13418 enum elf_ppc64_reloc_type r_type
;
13420 bfd_reloc_status_type r
;
13421 Elf_Internal_Sym
*sym
;
13423 struct elf_link_hash_entry
*h_elf
;
13424 struct ppc_link_hash_entry
*h
;
13425 struct ppc_link_hash_entry
*fdh
;
13426 const char *sym_name
;
13427 unsigned long r_symndx
, toc_symndx
;
13428 bfd_vma toc_addend
;
13429 unsigned char tls_mask
, tls_gd
, tls_type
;
13430 unsigned char sym_type
;
13431 bfd_vma relocation
;
13432 bfd_boolean unresolved_reloc
;
13433 bfd_boolean warned
;
13434 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13437 struct ppc_stub_hash_entry
*stub_entry
;
13438 bfd_vma max_br_offset
;
13440 Elf_Internal_Rela orig_rel
;
13441 reloc_howto_type
*howto
;
13442 struct reloc_howto_struct alt_howto
;
13447 r_type
= ELF64_R_TYPE (rel
->r_info
);
13448 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13450 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13451 symbol of the previous ADDR64 reloc. The symbol gives us the
13452 proper TOC base to use. */
13453 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13455 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13457 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13463 unresolved_reloc
= FALSE
;
13466 if (r_symndx
< symtab_hdr
->sh_info
)
13468 /* It's a local symbol. */
13469 struct _opd_sec_data
*opd
;
13471 sym
= local_syms
+ r_symndx
;
13472 sec
= local_sections
[r_symndx
];
13473 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13474 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13475 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13476 opd
= get_opd_info (sec
);
13477 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13479 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13485 /* If this is a relocation against the opd section sym
13486 and we have edited .opd, adjust the reloc addend so
13487 that ld -r and ld --emit-relocs output is correct.
13488 If it is a reloc against some other .opd symbol,
13489 then the symbol value will be adjusted later. */
13490 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13491 rel
->r_addend
+= adjust
;
13493 relocation
+= adjust
;
13499 bfd_boolean ignored
;
13501 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13502 r_symndx
, symtab_hdr
, sym_hashes
,
13503 h_elf
, sec
, relocation
,
13504 unresolved_reloc
, warned
, ignored
);
13505 sym_name
= h_elf
->root
.root
.string
;
13506 sym_type
= h_elf
->type
;
13508 && sec
->owner
== output_bfd
13509 && strcmp (sec
->name
, ".opd") == 0)
13511 /* This is a symbol defined in a linker script. All
13512 such are defined in output sections, even those
13513 defined by simple assignment from a symbol defined in
13514 an input section. Transfer the symbol to an
13515 appropriate input .opd section, so that a branch to
13516 this symbol will be mapped to the location specified
13517 by the opd entry. */
13518 struct bfd_link_order
*lo
;
13519 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13520 if (lo
->type
== bfd_indirect_link_order
)
13522 asection
*isec
= lo
->u
.indirect
.section
;
13523 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13524 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13527 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13528 h_elf
->root
.u
.def
.section
= isec
;
13535 h
= (struct ppc_link_hash_entry
*) h_elf
;
13537 if (sec
!= NULL
&& discarded_section (sec
))
13539 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13540 input_bfd
, input_section
,
13541 contents
+ rel
->r_offset
);
13542 wrel
->r_offset
= rel
->r_offset
;
13544 wrel
->r_addend
= 0;
13546 /* For ld -r, remove relocations in debug sections against
13547 sections defined in discarded sections. Not done for
13548 non-debug to preserve relocs in .eh_frame which the
13549 eh_frame editing code expects to be present. */
13550 if (bfd_link_relocatable (info
)
13551 && (input_section
->flags
& SEC_DEBUGGING
))
13557 if (bfd_link_relocatable (info
))
13560 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13562 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13563 sec
= bfd_abs_section_ptr
;
13564 unresolved_reloc
= FALSE
;
13567 /* TLS optimizations. Replace instruction sequences and relocs
13568 based on information we collected in tls_optimize. We edit
13569 RELOCS so that --emit-relocs will output something sensible
13570 for the final instruction stream. */
13575 tls_mask
= h
->tls_mask
;
13576 else if (local_got_ents
!= NULL
)
13578 struct plt_entry
**local_plt
= (struct plt_entry
**)
13579 (local_got_ents
+ symtab_hdr
->sh_info
);
13580 unsigned char *lgot_masks
= (unsigned char *)
13581 (local_plt
+ symtab_hdr
->sh_info
);
13582 tls_mask
= lgot_masks
[r_symndx
];
13585 && (r_type
== R_PPC64_TLS
13586 || r_type
== R_PPC64_TLSGD
13587 || r_type
== R_PPC64_TLSLD
))
13589 /* Check for toc tls entries. */
13590 unsigned char *toc_tls
;
13592 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13593 &local_syms
, rel
, input_bfd
))
13597 tls_mask
= *toc_tls
;
13600 /* Check that tls relocs are used with tls syms, and non-tls
13601 relocs are used with non-tls syms. */
13602 if (r_symndx
!= STN_UNDEF
13603 && r_type
!= R_PPC64_NONE
13605 || h
->elf
.root
.type
== bfd_link_hash_defined
13606 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13607 && (IS_PPC64_TLS_RELOC (r_type
)
13608 != (sym_type
== STT_TLS
13609 || (sym_type
== STT_SECTION
13610 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13613 && (r_type
== R_PPC64_TLS
13614 || r_type
== R_PPC64_TLSGD
13615 || r_type
== R_PPC64_TLSLD
))
13616 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13619 info
->callbacks
->einfo
13620 (!IS_PPC64_TLS_RELOC (r_type
)
13621 /* xgettext:c-format */
13622 ? _("%H: %s used with TLS symbol `%T'\n")
13623 /* xgettext:c-format */
13624 : _("%H: %s used with non-TLS symbol `%T'\n"),
13625 input_bfd
, input_section
, rel
->r_offset
,
13626 ppc64_elf_howto_table
[r_type
]->name
,
13630 /* Ensure reloc mapping code below stays sane. */
13631 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13632 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13633 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13634 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13635 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13636 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13637 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13638 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13639 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13640 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13648 case R_PPC64_LO_DS_OPT
:
13649 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13650 if ((insn
& (0x3f << 26)) != 58u << 26)
13652 insn
+= (14u << 26) - (58u << 26);
13653 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13654 r_type
= R_PPC64_TOC16_LO
;
13655 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13658 case R_PPC64_TOC16
:
13659 case R_PPC64_TOC16_LO
:
13660 case R_PPC64_TOC16_DS
:
13661 case R_PPC64_TOC16_LO_DS
:
13663 /* Check for toc tls entries. */
13664 unsigned char *toc_tls
;
13667 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13668 &local_syms
, rel
, input_bfd
);
13674 tls_mask
= *toc_tls
;
13675 if (r_type
== R_PPC64_TOC16_DS
13676 || r_type
== R_PPC64_TOC16_LO_DS
)
13679 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13684 /* If we found a GD reloc pair, then we might be
13685 doing a GD->IE transition. */
13688 tls_gd
= TLS_TPRELGD
;
13689 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13692 else if (retval
== 3)
13694 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13702 case R_PPC64_GOT_TPREL16_HI
:
13703 case R_PPC64_GOT_TPREL16_HA
:
13705 && (tls_mask
& TLS_TPREL
) == 0)
13707 rel
->r_offset
-= d_offset
;
13708 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13709 r_type
= R_PPC64_NONE
;
13710 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13714 case R_PPC64_GOT_TPREL16_DS
:
13715 case R_PPC64_GOT_TPREL16_LO_DS
:
13717 && (tls_mask
& TLS_TPREL
) == 0)
13720 insn
= bfd_get_32 (input_bfd
,
13721 contents
+ rel
->r_offset
- d_offset
);
13723 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13724 bfd_put_32 (input_bfd
, insn
,
13725 contents
+ rel
->r_offset
- d_offset
);
13726 r_type
= R_PPC64_TPREL16_HA
;
13727 if (toc_symndx
!= 0)
13729 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13730 rel
->r_addend
= toc_addend
;
13731 /* We changed the symbol. Start over in order to
13732 get h, sym, sec etc. right. */
13736 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13742 && (tls_mask
& TLS_TPREL
) == 0)
13744 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13745 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13748 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13749 /* Was PPC64_TLS which sits on insn boundary, now
13750 PPC64_TPREL16_LO which is at low-order half-word. */
13751 rel
->r_offset
+= d_offset
;
13752 r_type
= R_PPC64_TPREL16_LO
;
13753 if (toc_symndx
!= 0)
13755 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13756 rel
->r_addend
= toc_addend
;
13757 /* We changed the symbol. Start over in order to
13758 get h, sym, sec etc. right. */
13762 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13766 case R_PPC64_GOT_TLSGD16_HI
:
13767 case R_PPC64_GOT_TLSGD16_HA
:
13768 tls_gd
= TLS_TPRELGD
;
13769 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13773 case R_PPC64_GOT_TLSLD16_HI
:
13774 case R_PPC64_GOT_TLSLD16_HA
:
13775 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13778 if ((tls_mask
& tls_gd
) != 0)
13779 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13780 + R_PPC64_GOT_TPREL16_DS
);
13783 rel
->r_offset
-= d_offset
;
13784 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13785 r_type
= R_PPC64_NONE
;
13787 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13791 case R_PPC64_GOT_TLSGD16
:
13792 case R_PPC64_GOT_TLSGD16_LO
:
13793 tls_gd
= TLS_TPRELGD
;
13794 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13798 case R_PPC64_GOT_TLSLD16
:
13799 case R_PPC64_GOT_TLSLD16_LO
:
13800 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13802 unsigned int insn1
, insn2
, insn3
;
13806 offset
= (bfd_vma
) -1;
13807 /* If not using the newer R_PPC64_TLSGD/LD to mark
13808 __tls_get_addr calls, we must trust that the call
13809 stays with its arg setup insns, ie. that the next
13810 reloc is the __tls_get_addr call associated with
13811 the current reloc. Edit both insns. */
13812 if (input_section
->has_tls_get_addr_call
13813 && rel
+ 1 < relend
13814 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13815 htab
->tls_get_addr
,
13816 htab
->tls_get_addr_fd
))
13817 offset
= rel
[1].r_offset
;
13818 /* We read the low GOT_TLS (or TOC16) insn because we
13819 need to keep the destination reg. It may be
13820 something other than the usual r3, and moved to r3
13821 before the call by intervening code. */
13822 insn1
= bfd_get_32 (input_bfd
,
13823 contents
+ rel
->r_offset
- d_offset
);
13824 if ((tls_mask
& tls_gd
) != 0)
13827 insn1
&= (0x1f << 21) | (0x1f << 16);
13828 insn1
|= 58 << 26; /* ld */
13829 insn2
= 0x7c636a14; /* add 3,3,13 */
13830 if (offset
!= (bfd_vma
) -1)
13831 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13832 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13833 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13834 + R_PPC64_GOT_TPREL16_DS
);
13836 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13837 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13842 insn1
&= 0x1f << 21;
13843 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13844 insn2
= 0x38630000; /* addi 3,3,0 */
13847 /* Was an LD reloc. */
13849 sec
= local_sections
[toc_symndx
];
13851 r_symndx
< symtab_hdr
->sh_info
;
13853 if (local_sections
[r_symndx
] == sec
)
13855 if (r_symndx
>= symtab_hdr
->sh_info
)
13856 r_symndx
= STN_UNDEF
;
13857 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13858 if (r_symndx
!= STN_UNDEF
)
13859 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13860 + sec
->output_offset
13861 + sec
->output_section
->vma
);
13863 else if (toc_symndx
!= 0)
13865 r_symndx
= toc_symndx
;
13866 rel
->r_addend
= toc_addend
;
13868 r_type
= R_PPC64_TPREL16_HA
;
13869 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13870 if (offset
!= (bfd_vma
) -1)
13872 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13873 R_PPC64_TPREL16_LO
);
13874 rel
[1].r_offset
= offset
+ d_offset
;
13875 rel
[1].r_addend
= rel
->r_addend
;
13878 bfd_put_32 (input_bfd
, insn1
,
13879 contents
+ rel
->r_offset
- d_offset
);
13880 if (offset
!= (bfd_vma
) -1)
13882 insn3
= bfd_get_32 (input_bfd
,
13883 contents
+ offset
+ 4);
13885 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13887 rel
[1].r_offset
+= 4;
13888 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13891 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13893 if ((tls_mask
& tls_gd
) == 0
13894 && (tls_gd
== 0 || toc_symndx
!= 0))
13896 /* We changed the symbol. Start over in order
13897 to get h, sym, sec etc. right. */
13903 case R_PPC64_TLSGD
:
13904 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13906 unsigned int insn2
, insn3
;
13907 bfd_vma offset
= rel
->r_offset
;
13909 if ((tls_mask
& TLS_TPRELGD
) != 0)
13912 r_type
= R_PPC64_NONE
;
13913 insn2
= 0x7c636a14; /* add 3,3,13 */
13918 if (toc_symndx
!= 0)
13920 r_symndx
= toc_symndx
;
13921 rel
->r_addend
= toc_addend
;
13923 r_type
= R_PPC64_TPREL16_LO
;
13924 rel
->r_offset
= offset
+ d_offset
;
13925 insn2
= 0x38630000; /* addi 3,3,0 */
13927 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13928 /* Zap the reloc on the _tls_get_addr call too. */
13929 BFD_ASSERT (offset
== rel
[1].r_offset
);
13930 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13931 insn3
= bfd_get_32 (input_bfd
,
13932 contents
+ offset
+ 4);
13934 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13936 rel
->r_offset
+= 4;
13937 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13940 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13941 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13946 case R_PPC64_TLSLD
:
13947 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13949 unsigned int insn2
, insn3
;
13950 bfd_vma offset
= rel
->r_offset
;
13953 sec
= local_sections
[toc_symndx
];
13955 r_symndx
< symtab_hdr
->sh_info
;
13957 if (local_sections
[r_symndx
] == sec
)
13959 if (r_symndx
>= symtab_hdr
->sh_info
)
13960 r_symndx
= STN_UNDEF
;
13961 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13962 if (r_symndx
!= STN_UNDEF
)
13963 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13964 + sec
->output_offset
13965 + sec
->output_section
->vma
);
13967 r_type
= R_PPC64_TPREL16_LO
;
13968 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13969 rel
->r_offset
= offset
+ d_offset
;
13970 /* Zap the reloc on the _tls_get_addr call too. */
13971 BFD_ASSERT (offset
== rel
[1].r_offset
);
13972 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13973 insn2
= 0x38630000; /* addi 3,3,0 */
13974 insn3
= bfd_get_32 (input_bfd
,
13975 contents
+ offset
+ 4);
13977 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13979 rel
->r_offset
+= 4;
13980 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
13983 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
13988 case R_PPC64_DTPMOD64
:
13989 if (rel
+ 1 < relend
13990 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13991 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13993 if ((tls_mask
& TLS_GD
) == 0)
13995 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13996 if ((tls_mask
& TLS_TPRELGD
) != 0)
13997 r_type
= R_PPC64_TPREL64
;
14000 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14001 r_type
= R_PPC64_NONE
;
14003 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14008 if ((tls_mask
& TLS_LD
) == 0)
14010 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14011 r_type
= R_PPC64_NONE
;
14012 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14017 case R_PPC64_TPREL64
:
14018 if ((tls_mask
& TLS_TPREL
) == 0)
14020 r_type
= R_PPC64_NONE
;
14021 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14025 case R_PPC64_ENTRY
:
14026 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14027 if (!bfd_link_pic (info
)
14028 && !info
->traditional_format
14029 && relocation
+ 0x80008000 <= 0xffffffff)
14031 unsigned int insn1
, insn2
;
14033 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14034 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14035 if ((insn1
& ~0xfffc) == LD_R2_0R12
14036 && insn2
== ADD_R2_R2_R12
)
14038 bfd_put_32 (input_bfd
,
14039 LIS_R2
+ PPC_HA (relocation
),
14040 contents
+ rel
->r_offset
);
14041 bfd_put_32 (input_bfd
,
14042 ADDI_R2_R2
+ PPC_LO (relocation
),
14043 contents
+ rel
->r_offset
+ 4);
14048 relocation
-= (rel
->r_offset
14049 + input_section
->output_offset
14050 + input_section
->output_section
->vma
);
14051 if (relocation
+ 0x80008000 <= 0xffffffff)
14053 unsigned int insn1
, insn2
;
14055 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14056 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14057 if ((insn1
& ~0xfffc) == LD_R2_0R12
14058 && insn2
== ADD_R2_R2_R12
)
14060 bfd_put_32 (input_bfd
,
14061 ADDIS_R2_R12
+ PPC_HA (relocation
),
14062 contents
+ rel
->r_offset
);
14063 bfd_put_32 (input_bfd
,
14064 ADDI_R2_R2
+ PPC_LO (relocation
),
14065 contents
+ rel
->r_offset
+ 4);
14071 case R_PPC64_REL16_HA
:
14072 /* If we are generating a non-PIC executable, edit
14073 . 0: addis 2,12,.TOC.-0b@ha
14074 . addi 2,2,.TOC.-0b@l
14075 used by ELFv2 global entry points to set up r2, to
14078 if .TOC. is in range. */
14079 if (!bfd_link_pic (info
)
14080 && !info
->traditional_format
14082 && rel
->r_addend
== d_offset
14083 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14084 && rel
+ 1 < relend
14085 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14086 && rel
[1].r_offset
== rel
->r_offset
+ 4
14087 && rel
[1].r_addend
== rel
->r_addend
+ 4
14088 && relocation
+ 0x80008000 <= 0xffffffff)
14090 unsigned int insn1
, insn2
;
14091 bfd_vma offset
= rel
->r_offset
- d_offset
;
14092 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14093 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14094 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14095 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14097 r_type
= R_PPC64_ADDR16_HA
;
14098 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14099 rel
->r_addend
-= d_offset
;
14100 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14101 rel
[1].r_addend
-= d_offset
+ 4;
14102 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14108 /* Handle other relocations that tweak non-addend part of insn. */
14110 max_br_offset
= 1 << 25;
14111 addend
= rel
->r_addend
;
14112 reloc_dest
= DEST_NORMAL
;
14118 case R_PPC64_TOCSAVE
:
14119 if (relocation
+ addend
== (rel
->r_offset
14120 + input_section
->output_offset
14121 + input_section
->output_section
->vma
)
14122 && tocsave_find (htab
, NO_INSERT
,
14123 &local_syms
, rel
, input_bfd
))
14125 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14127 || insn
== CROR_151515
|| insn
== CROR_313131
)
14128 bfd_put_32 (input_bfd
,
14129 STD_R2_0R1
+ STK_TOC (htab
),
14130 contents
+ rel
->r_offset
);
14134 /* Branch taken prediction relocations. */
14135 case R_PPC64_ADDR14_BRTAKEN
:
14136 case R_PPC64_REL14_BRTAKEN
:
14137 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14138 /* Fall through. */
14140 /* Branch not taken prediction relocations. */
14141 case R_PPC64_ADDR14_BRNTAKEN
:
14142 case R_PPC64_REL14_BRNTAKEN
:
14143 insn
|= bfd_get_32 (input_bfd
,
14144 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14145 /* Fall through. */
14147 case R_PPC64_REL14
:
14148 max_br_offset
= 1 << 15;
14149 /* Fall through. */
14151 case R_PPC64_REL24
:
14152 /* Calls to functions with a different TOC, such as calls to
14153 shared objects, need to alter the TOC pointer. This is
14154 done using a linkage stub. A REL24 branching to these
14155 linkage stubs needs to be followed by a nop, as the nop
14156 will be replaced with an instruction to restore the TOC
14161 && h
->oh
->is_func_descriptor
)
14162 fdh
= ppc_follow_link (h
->oh
);
14163 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14165 if (stub_entry
!= NULL
14166 && (stub_entry
->stub_type
== ppc_stub_plt_call
14167 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14168 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14169 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14171 bfd_boolean can_plt_call
= FALSE
;
14173 /* All of these stubs will modify r2, so there must be a
14174 branch and link followed by a nop. The nop is
14175 replaced by an insn to restore r2. */
14176 if (rel
->r_offset
+ 8 <= input_section
->size
)
14180 br
= bfd_get_32 (input_bfd
,
14181 contents
+ rel
->r_offset
);
14186 nop
= bfd_get_32 (input_bfd
,
14187 contents
+ rel
->r_offset
+ 4);
14189 || nop
== CROR_151515
|| nop
== CROR_313131
)
14192 && (h
== htab
->tls_get_addr_fd
14193 || h
== htab
->tls_get_addr
)
14194 && htab
->params
->tls_get_addr_opt
)
14196 /* Special stub used, leave nop alone. */
14199 bfd_put_32 (input_bfd
,
14200 LD_R2_0R1
+ STK_TOC (htab
),
14201 contents
+ rel
->r_offset
+ 4);
14202 can_plt_call
= TRUE
;
14207 if (!can_plt_call
&& h
!= NULL
)
14209 const char *name
= h
->elf
.root
.root
.string
;
14214 if (strncmp (name
, "__libc_start_main", 17) == 0
14215 && (name
[17] == 0 || name
[17] == '@'))
14217 /* Allow crt1 branch to go via a toc adjusting
14218 stub. Other calls that never return could do
14219 the same, if we could detect such. */
14220 can_plt_call
= TRUE
;
14226 /* g++ as of 20130507 emits self-calls without a
14227 following nop. This is arguably wrong since we
14228 have conflicting information. On the one hand a
14229 global symbol and on the other a local call
14230 sequence, but don't error for this special case.
14231 It isn't possible to cheaply verify we have
14232 exactly such a call. Allow all calls to the same
14234 asection
*code_sec
= sec
;
14236 if (get_opd_info (sec
) != NULL
)
14238 bfd_vma off
= (relocation
+ addend
14239 - sec
->output_section
->vma
14240 - sec
->output_offset
);
14242 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14244 if (code_sec
== input_section
)
14245 can_plt_call
= TRUE
;
14250 if (stub_entry
->stub_type
== ppc_stub_plt_call
14251 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14252 info
->callbacks
->einfo
14253 /* xgettext:c-format */
14254 (_("%H: call to `%T' lacks nop, can't restore toc; "
14255 "recompile with -fPIC\n"),
14256 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14258 info
->callbacks
->einfo
14259 /* xgettext:c-format */
14260 (_("%H: call to `%T' lacks nop, can't restore toc; "
14261 "(-mcmodel=small toc adjust stub)\n"),
14262 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14264 bfd_set_error (bfd_error_bad_value
);
14269 && (stub_entry
->stub_type
== ppc_stub_plt_call
14270 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14271 unresolved_reloc
= FALSE
;
14274 if ((stub_entry
== NULL
14275 || stub_entry
->stub_type
== ppc_stub_long_branch
14276 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14277 && get_opd_info (sec
) != NULL
)
14279 /* The branch destination is the value of the opd entry. */
14280 bfd_vma off
= (relocation
+ addend
14281 - sec
->output_section
->vma
14282 - sec
->output_offset
);
14283 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14284 if (dest
!= (bfd_vma
) -1)
14288 reloc_dest
= DEST_OPD
;
14292 /* If the branch is out of reach we ought to have a long
14294 from
= (rel
->r_offset
14295 + input_section
->output_offset
14296 + input_section
->output_section
->vma
);
14298 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14302 if (stub_entry
!= NULL
14303 && (stub_entry
->stub_type
== ppc_stub_long_branch
14304 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14305 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14306 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14307 || (relocation
+ addend
- from
+ max_br_offset
14308 < 2 * max_br_offset
)))
14309 /* Don't use the stub if this branch is in range. */
14312 if (stub_entry
!= NULL
)
14314 /* Munge up the value and addend so that we call the stub
14315 rather than the procedure directly. */
14316 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14318 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14319 relocation
+= (stub_sec
->output_offset
14320 + stub_sec
->output_section
->vma
14321 + stub_sec
->size
- htab
->sfpr
->size
14322 - htab
->sfpr
->output_offset
14323 - htab
->sfpr
->output_section
->vma
);
14325 relocation
= (stub_entry
->stub_offset
14326 + stub_sec
->output_offset
14327 + stub_sec
->output_section
->vma
);
14329 reloc_dest
= DEST_STUB
;
14331 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14332 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14333 && (ALWAYS_EMIT_R2SAVE
14334 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14335 && rel
+ 1 < relend
14336 && rel
[1].r_offset
== rel
->r_offset
+ 4
14337 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14345 /* Set 'a' bit. This is 0b00010 in BO field for branch
14346 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14347 for branch on CTR insns (BO == 1a00t or 1a01t). */
14348 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14349 insn
|= 0x02 << 21;
14350 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14351 insn
|= 0x08 << 21;
14357 /* Invert 'y' bit if not the default. */
14358 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14359 insn
^= 0x01 << 21;
14362 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14365 /* NOP out calls to undefined weak functions.
14366 We can thus call a weak function without first
14367 checking whether the function is defined. */
14369 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14370 && h
->elf
.dynindx
== -1
14371 && r_type
== R_PPC64_REL24
14375 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14381 /* Set `addend'. */
14386 info
->callbacks
->einfo
14387 /* xgettext:c-format */
14388 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14389 input_bfd
, (int) r_type
, sym_name
);
14391 bfd_set_error (bfd_error_bad_value
);
14397 case R_PPC64_TLSGD
:
14398 case R_PPC64_TLSLD
:
14399 case R_PPC64_TOCSAVE
:
14400 case R_PPC64_GNU_VTINHERIT
:
14401 case R_PPC64_GNU_VTENTRY
:
14402 case R_PPC64_ENTRY
:
14405 /* GOT16 relocations. Like an ADDR16 using the symbol's
14406 address in the GOT as relocation value instead of the
14407 symbol's value itself. Also, create a GOT entry for the
14408 symbol and put the symbol value there. */
14409 case R_PPC64_GOT_TLSGD16
:
14410 case R_PPC64_GOT_TLSGD16_LO
:
14411 case R_PPC64_GOT_TLSGD16_HI
:
14412 case R_PPC64_GOT_TLSGD16_HA
:
14413 tls_type
= TLS_TLS
| TLS_GD
;
14416 case R_PPC64_GOT_TLSLD16
:
14417 case R_PPC64_GOT_TLSLD16_LO
:
14418 case R_PPC64_GOT_TLSLD16_HI
:
14419 case R_PPC64_GOT_TLSLD16_HA
:
14420 tls_type
= TLS_TLS
| TLS_LD
;
14423 case R_PPC64_GOT_TPREL16_DS
:
14424 case R_PPC64_GOT_TPREL16_LO_DS
:
14425 case R_PPC64_GOT_TPREL16_HI
:
14426 case R_PPC64_GOT_TPREL16_HA
:
14427 tls_type
= TLS_TLS
| TLS_TPREL
;
14430 case R_PPC64_GOT_DTPREL16_DS
:
14431 case R_PPC64_GOT_DTPREL16_LO_DS
:
14432 case R_PPC64_GOT_DTPREL16_HI
:
14433 case R_PPC64_GOT_DTPREL16_HA
:
14434 tls_type
= TLS_TLS
| TLS_DTPREL
;
14437 case R_PPC64_GOT16
:
14438 case R_PPC64_GOT16_LO
:
14439 case R_PPC64_GOT16_HI
:
14440 case R_PPC64_GOT16_HA
:
14441 case R_PPC64_GOT16_DS
:
14442 case R_PPC64_GOT16_LO_DS
:
14445 /* Relocation is to the entry for this symbol in the global
14450 unsigned long indx
= 0;
14451 struct got_entry
*ent
;
14453 if (tls_type
== (TLS_TLS
| TLS_LD
)
14455 || !h
->elf
.def_dynamic
))
14456 ent
= ppc64_tlsld_got (input_bfd
);
14461 if (!htab
->elf
.dynamic_sections_created
14462 || h
->elf
.dynindx
== -1
14463 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14464 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14465 /* This is actually a static link, or it is a
14466 -Bsymbolic link and the symbol is defined
14467 locally, or the symbol was forced to be local
14468 because of a version file. */
14472 indx
= h
->elf
.dynindx
;
14473 unresolved_reloc
= FALSE
;
14475 ent
= h
->elf
.got
.glist
;
14479 if (local_got_ents
== NULL
)
14481 ent
= local_got_ents
[r_symndx
];
14484 for (; ent
!= NULL
; ent
= ent
->next
)
14485 if (ent
->addend
== orig_rel
.r_addend
14486 && ent
->owner
== input_bfd
14487 && ent
->tls_type
== tls_type
)
14493 if (ent
->is_indirect
)
14494 ent
= ent
->got
.ent
;
14495 offp
= &ent
->got
.offset
;
14496 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14500 /* The offset must always be a multiple of 8. We use the
14501 least significant bit to record whether we have already
14502 processed this entry. */
14504 if ((off
& 1) != 0)
14508 /* Generate relocs for the dynamic linker, except in
14509 the case of TLSLD where we'll use one entry per
14517 ? h
->elf
.type
== STT_GNU_IFUNC
14518 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14521 relgot
= htab
->elf
.irelplt
;
14523 htab
->local_ifunc_resolver
= 1;
14524 else if (is_static_defined (&h
->elf
))
14525 htab
->maybe_local_ifunc_resolver
= 1;
14528 || (bfd_link_pic (info
)
14530 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14531 || (tls_type
== (TLS_TLS
| TLS_LD
)
14532 && !h
->elf
.def_dynamic
))))
14533 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14534 if (relgot
!= NULL
)
14536 outrel
.r_offset
= (got
->output_section
->vma
14537 + got
->output_offset
14539 outrel
.r_addend
= addend
;
14540 if (tls_type
& (TLS_LD
| TLS_GD
))
14542 outrel
.r_addend
= 0;
14543 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14544 if (tls_type
== (TLS_TLS
| TLS_GD
))
14546 loc
= relgot
->contents
;
14547 loc
+= (relgot
->reloc_count
++
14548 * sizeof (Elf64_External_Rela
));
14549 bfd_elf64_swap_reloca_out (output_bfd
,
14551 outrel
.r_offset
+= 8;
14552 outrel
.r_addend
= addend
;
14554 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14557 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14558 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14559 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14560 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14561 else if (indx
!= 0)
14562 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14566 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14568 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14570 /* Write the .got section contents for the sake
14572 loc
= got
->contents
+ off
;
14573 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14577 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14579 outrel
.r_addend
+= relocation
;
14580 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14582 if (htab
->elf
.tls_sec
== NULL
)
14583 outrel
.r_addend
= 0;
14585 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14588 loc
= relgot
->contents
;
14589 loc
+= (relgot
->reloc_count
++
14590 * sizeof (Elf64_External_Rela
));
14591 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14594 /* Init the .got section contents here if we're not
14595 emitting a reloc. */
14599 = (htab
->params
->tls_get_addr_opt
14600 && htab
->tls_get_addr_fd
!= NULL
14601 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
14603 relocation
+= addend
;
14606 if (htab
->elf
.tls_sec
== NULL
)
14610 if (tls_type
& TLS_LD
)
14613 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14614 if ((tls_type
& TLS_TPREL
)
14615 || (tlsopt
&& !(tls_type
& TLS_DTPREL
)))
14616 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14619 if (tls_type
& (TLS_GD
| TLS_LD
))
14621 bfd_put_64 (output_bfd
, relocation
,
14622 got
->contents
+ off
+ 8);
14623 relocation
= !tlsopt
;
14626 bfd_put_64 (output_bfd
, relocation
,
14627 got
->contents
+ off
);
14631 if (off
>= (bfd_vma
) -2)
14634 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14635 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14639 case R_PPC64_PLT16_HA
:
14640 case R_PPC64_PLT16_HI
:
14641 case R_PPC64_PLT16_LO
:
14642 case R_PPC64_PLT32
:
14643 case R_PPC64_PLT64
:
14644 /* Relocation is to the entry for this symbol in the
14645 procedure linkage table. */
14647 struct plt_entry
**plt_list
= NULL
;
14649 plt_list
= &h
->elf
.plt
.plist
;
14650 else if (local_got_ents
!= NULL
)
14652 struct plt_entry
**local_plt
= (struct plt_entry
**)
14653 (local_got_ents
+ symtab_hdr
->sh_info
);
14654 unsigned char *local_got_tls_masks
= (unsigned char *)
14655 (local_plt
+ symtab_hdr
->sh_info
);
14656 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14657 plt_list
= local_plt
+ r_symndx
;
14661 struct plt_entry
*ent
;
14663 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14664 if (ent
->plt
.offset
!= (bfd_vma
) -1
14665 && ent
->addend
== orig_rel
.r_addend
)
14669 plt
= htab
->elf
.splt
;
14670 if (!htab
->elf
.dynamic_sections_created
14672 || h
->elf
.dynindx
== -1)
14673 plt
= htab
->elf
.iplt
;
14674 relocation
= (plt
->output_section
->vma
14675 + plt
->output_offset
14676 + ent
->plt
.offset
);
14678 unresolved_reloc
= FALSE
;
14686 /* Relocation value is TOC base. */
14687 relocation
= TOCstart
;
14688 if (r_symndx
== STN_UNDEF
)
14689 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14690 else if (unresolved_reloc
)
14692 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14693 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14695 unresolved_reloc
= TRUE
;
14698 /* TOC16 relocs. We want the offset relative to the TOC base,
14699 which is the address of the start of the TOC plus 0x8000.
14700 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14702 case R_PPC64_TOC16
:
14703 case R_PPC64_TOC16_LO
:
14704 case R_PPC64_TOC16_HI
:
14705 case R_PPC64_TOC16_DS
:
14706 case R_PPC64_TOC16_LO_DS
:
14707 case R_PPC64_TOC16_HA
:
14708 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14711 /* Relocate against the beginning of the section. */
14712 case R_PPC64_SECTOFF
:
14713 case R_PPC64_SECTOFF_LO
:
14714 case R_PPC64_SECTOFF_HI
:
14715 case R_PPC64_SECTOFF_DS
:
14716 case R_PPC64_SECTOFF_LO_DS
:
14717 case R_PPC64_SECTOFF_HA
:
14719 addend
-= sec
->output_section
->vma
;
14722 case R_PPC64_REL16
:
14723 case R_PPC64_REL16_LO
:
14724 case R_PPC64_REL16_HI
:
14725 case R_PPC64_REL16_HA
:
14726 case R_PPC64_REL16DX_HA
:
14729 case R_PPC64_REL14
:
14730 case R_PPC64_REL14_BRNTAKEN
:
14731 case R_PPC64_REL14_BRTAKEN
:
14732 case R_PPC64_REL24
:
14735 case R_PPC64_TPREL16
:
14736 case R_PPC64_TPREL16_LO
:
14737 case R_PPC64_TPREL16_HI
:
14738 case R_PPC64_TPREL16_HA
:
14739 case R_PPC64_TPREL16_DS
:
14740 case R_PPC64_TPREL16_LO_DS
:
14741 case R_PPC64_TPREL16_HIGH
:
14742 case R_PPC64_TPREL16_HIGHA
:
14743 case R_PPC64_TPREL16_HIGHER
:
14744 case R_PPC64_TPREL16_HIGHERA
:
14745 case R_PPC64_TPREL16_HIGHEST
:
14746 case R_PPC64_TPREL16_HIGHESTA
:
14748 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14749 && h
->elf
.dynindx
== -1)
14751 /* Make this relocation against an undefined weak symbol
14752 resolve to zero. This is really just a tweak, since
14753 code using weak externs ought to check that they are
14754 defined before using them. */
14755 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14757 insn
= bfd_get_32 (input_bfd
, p
);
14758 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14760 bfd_put_32 (input_bfd
, insn
, p
);
14763 if (htab
->elf
.tls_sec
!= NULL
)
14764 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14765 if (bfd_link_pic (info
))
14766 /* The TPREL16 relocs shouldn't really be used in shared
14767 libs as they will result in DT_TEXTREL being set, but
14768 support them anyway. */
14772 case R_PPC64_DTPREL16
:
14773 case R_PPC64_DTPREL16_LO
:
14774 case R_PPC64_DTPREL16_HI
:
14775 case R_PPC64_DTPREL16_HA
:
14776 case R_PPC64_DTPREL16_DS
:
14777 case R_PPC64_DTPREL16_LO_DS
:
14778 case R_PPC64_DTPREL16_HIGH
:
14779 case R_PPC64_DTPREL16_HIGHA
:
14780 case R_PPC64_DTPREL16_HIGHER
:
14781 case R_PPC64_DTPREL16_HIGHERA
:
14782 case R_PPC64_DTPREL16_HIGHEST
:
14783 case R_PPC64_DTPREL16_HIGHESTA
:
14784 if (htab
->elf
.tls_sec
!= NULL
)
14785 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14788 case R_PPC64_ADDR64_LOCAL
:
14789 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14794 case R_PPC64_DTPMOD64
:
14799 case R_PPC64_TPREL64
:
14800 if (htab
->elf
.tls_sec
!= NULL
)
14801 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14804 case R_PPC64_DTPREL64
:
14805 if (htab
->elf
.tls_sec
!= NULL
)
14806 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14807 /* Fall through. */
14809 /* Relocations that may need to be propagated if this is a
14811 case R_PPC64_REL30
:
14812 case R_PPC64_REL32
:
14813 case R_PPC64_REL64
:
14814 case R_PPC64_ADDR14
:
14815 case R_PPC64_ADDR14_BRNTAKEN
:
14816 case R_PPC64_ADDR14_BRTAKEN
:
14817 case R_PPC64_ADDR16
:
14818 case R_PPC64_ADDR16_DS
:
14819 case R_PPC64_ADDR16_HA
:
14820 case R_PPC64_ADDR16_HI
:
14821 case R_PPC64_ADDR16_HIGH
:
14822 case R_PPC64_ADDR16_HIGHA
:
14823 case R_PPC64_ADDR16_HIGHER
:
14824 case R_PPC64_ADDR16_HIGHERA
:
14825 case R_PPC64_ADDR16_HIGHEST
:
14826 case R_PPC64_ADDR16_HIGHESTA
:
14827 case R_PPC64_ADDR16_LO
:
14828 case R_PPC64_ADDR16_LO_DS
:
14829 case R_PPC64_ADDR24
:
14830 case R_PPC64_ADDR32
:
14831 case R_PPC64_ADDR64
:
14832 case R_PPC64_UADDR16
:
14833 case R_PPC64_UADDR32
:
14834 case R_PPC64_UADDR64
:
14836 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14839 if (NO_OPD_RELOCS
&& is_opd
)
14842 if (bfd_link_pic (info
)
14844 || h
->dyn_relocs
!= NULL
)
14845 && ((h
!= NULL
&& pc_dynrelocs (h
))
14846 || must_be_dyn_reloc (info
, r_type
)))
14848 ? h
->dyn_relocs
!= NULL
14849 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14851 bfd_boolean skip
, relocate
;
14856 /* When generating a dynamic object, these relocations
14857 are copied into the output file to be resolved at run
14863 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14864 input_section
, rel
->r_offset
);
14865 if (out_off
== (bfd_vma
) -1)
14867 else if (out_off
== (bfd_vma
) -2)
14868 skip
= TRUE
, relocate
= TRUE
;
14869 out_off
+= (input_section
->output_section
->vma
14870 + input_section
->output_offset
);
14871 outrel
.r_offset
= out_off
;
14872 outrel
.r_addend
= rel
->r_addend
;
14874 /* Optimize unaligned reloc use. */
14875 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14876 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14877 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14878 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14879 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14880 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14881 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14882 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14883 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14886 memset (&outrel
, 0, sizeof outrel
);
14887 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14889 && r_type
!= R_PPC64_TOC
)
14891 indx
= h
->elf
.dynindx
;
14892 BFD_ASSERT (indx
!= -1);
14893 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14897 /* This symbol is local, or marked to become local,
14898 or this is an opd section reloc which must point
14899 at a local function. */
14900 outrel
.r_addend
+= relocation
;
14901 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14903 if (is_opd
&& h
!= NULL
)
14905 /* Lie about opd entries. This case occurs
14906 when building shared libraries and we
14907 reference a function in another shared
14908 lib. The same thing happens for a weak
14909 definition in an application that's
14910 overridden by a strong definition in a
14911 shared lib. (I believe this is a generic
14912 bug in binutils handling of weak syms.)
14913 In these cases we won't use the opd
14914 entry in this lib. */
14915 unresolved_reloc
= FALSE
;
14918 && r_type
== R_PPC64_ADDR64
14920 ? h
->elf
.type
== STT_GNU_IFUNC
14921 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14922 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14925 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14927 /* We need to relocate .opd contents for ld.so.
14928 Prelink also wants simple and consistent rules
14929 for relocs. This make all RELATIVE relocs have
14930 *r_offset equal to r_addend. */
14937 ? h
->elf
.type
== STT_GNU_IFUNC
14938 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14940 info
->callbacks
->einfo
14941 /* xgettext:c-format */
14942 (_("%H: %s for indirect "
14943 "function `%T' unsupported\n"),
14944 input_bfd
, input_section
, rel
->r_offset
,
14945 ppc64_elf_howto_table
[r_type
]->name
,
14949 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14951 else if (sec
== NULL
|| sec
->owner
== NULL
)
14953 bfd_set_error (bfd_error_bad_value
);
14960 osec
= sec
->output_section
;
14961 indx
= elf_section_data (osec
)->dynindx
;
14965 if ((osec
->flags
& SEC_READONLY
) == 0
14966 && htab
->elf
.data_index_section
!= NULL
)
14967 osec
= htab
->elf
.data_index_section
;
14969 osec
= htab
->elf
.text_index_section
;
14970 indx
= elf_section_data (osec
)->dynindx
;
14972 BFD_ASSERT (indx
!= 0);
14974 /* We are turning this relocation into one
14975 against a section symbol, so subtract out
14976 the output section's address but not the
14977 offset of the input section in the output
14979 outrel
.r_addend
-= osec
->vma
;
14982 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14986 sreloc
= elf_section_data (input_section
)->sreloc
;
14988 ? h
->elf
.type
== STT_GNU_IFUNC
14989 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14991 sreloc
= htab
->elf
.irelplt
;
14993 htab
->local_ifunc_resolver
= 1;
14994 else if (is_static_defined (&h
->elf
))
14995 htab
->maybe_local_ifunc_resolver
= 1;
14997 if (sreloc
== NULL
)
15000 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
15003 loc
= sreloc
->contents
;
15004 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15005 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15007 /* If this reloc is against an external symbol, it will
15008 be computed at runtime, so there's no need to do
15009 anything now. However, for the sake of prelink ensure
15010 that the section contents are a known value. */
15013 unresolved_reloc
= FALSE
;
15014 /* The value chosen here is quite arbitrary as ld.so
15015 ignores section contents except for the special
15016 case of .opd where the contents might be accessed
15017 before relocation. Choose zero, as that won't
15018 cause reloc overflow. */
15021 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15022 to improve backward compatibility with older
15024 if (r_type
== R_PPC64_ADDR64
)
15025 addend
= outrel
.r_addend
;
15026 /* Adjust pc_relative relocs to have zero in *r_offset. */
15027 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15028 addend
= outrel
.r_offset
;
15031 else if (r_type
== R_PPC64_DTPMOD64
15032 && htab
->params
->tls_get_addr_opt
15033 && htab
->tls_get_addr_fd
!= NULL
15034 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
)
15036 /* Set up for __tls_get_addr_opt stub, when this entry
15037 does not have dynamic relocs. */
15039 /* Set up the next word for local dynamic. If it turns
15040 out to be global dynamic, the reloc will overwrite
15042 if (rel
->r_offset
+ 16 <= input_section
->size
)
15043 bfd_put_64 (input_bfd
, DTP_OFFSET
- TP_OFFSET
,
15044 contents
+ rel
->r_offset
+ 8);
15046 else if (r_type
== R_PPC64_DTPREL64
15047 && htab
->params
->tls_get_addr_opt
15048 && htab
->tls_get_addr_fd
!= NULL
15049 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
15051 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
15052 && rel
[-1].r_offset
+ 8 == rel
->r_offset
)
15054 /* __tls_get_addr_opt stub value. */
15055 addend
+= DTP_OFFSET
- TP_OFFSET
;
15060 case R_PPC64_GLOB_DAT
:
15061 case R_PPC64_JMP_SLOT
:
15062 case R_PPC64_JMP_IREL
:
15063 case R_PPC64_RELATIVE
:
15064 /* We shouldn't ever see these dynamic relocs in relocatable
15066 /* Fall through. */
15068 case R_PPC64_PLTGOT16
:
15069 case R_PPC64_PLTGOT16_DS
:
15070 case R_PPC64_PLTGOT16_HA
:
15071 case R_PPC64_PLTGOT16_HI
:
15072 case R_PPC64_PLTGOT16_LO
:
15073 case R_PPC64_PLTGOT16_LO_DS
:
15074 case R_PPC64_PLTREL32
:
15075 case R_PPC64_PLTREL64
:
15076 /* These ones haven't been implemented yet. */
15078 info
->callbacks
->einfo
15079 /* xgettext:c-format */
15080 (_("%P: %B: %s is not supported for `%T'\n"),
15082 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15084 bfd_set_error (bfd_error_invalid_operation
);
15089 /* Multi-instruction sequences that access the TOC can be
15090 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15091 to nop; addi rb,r2,x; */
15097 case R_PPC64_GOT_TLSLD16_HI
:
15098 case R_PPC64_GOT_TLSGD16_HI
:
15099 case R_PPC64_GOT_TPREL16_HI
:
15100 case R_PPC64_GOT_DTPREL16_HI
:
15101 case R_PPC64_GOT16_HI
:
15102 case R_PPC64_TOC16_HI
:
15103 /* These relocs would only be useful if building up an
15104 offset to later add to r2, perhaps in an indexed
15105 addressing mode instruction. Don't try to optimize.
15106 Unfortunately, the possibility of someone building up an
15107 offset like this or even with the HA relocs, means that
15108 we need to check the high insn when optimizing the low
15112 case R_PPC64_GOT_TLSLD16_HA
:
15113 case R_PPC64_GOT_TLSGD16_HA
:
15114 case R_PPC64_GOT_TPREL16_HA
:
15115 case R_PPC64_GOT_DTPREL16_HA
:
15116 case R_PPC64_GOT16_HA
:
15117 case R_PPC64_TOC16_HA
:
15118 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15119 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15121 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15122 bfd_put_32 (input_bfd
, NOP
, p
);
15126 case R_PPC64_GOT_TLSLD16_LO
:
15127 case R_PPC64_GOT_TLSGD16_LO
:
15128 case R_PPC64_GOT_TPREL16_LO_DS
:
15129 case R_PPC64_GOT_DTPREL16_LO_DS
:
15130 case R_PPC64_GOT16_LO
:
15131 case R_PPC64_GOT16_LO_DS
:
15132 case R_PPC64_TOC16_LO
:
15133 case R_PPC64_TOC16_LO_DS
:
15134 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15135 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15137 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15138 insn
= bfd_get_32 (input_bfd
, p
);
15139 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15141 /* Transform addic to addi when we change reg. */
15142 insn
&= ~((0x3f << 26) | (0x1f << 16));
15143 insn
|= (14u << 26) | (2 << 16);
15147 insn
&= ~(0x1f << 16);
15150 bfd_put_32 (input_bfd
, insn
, p
);
15155 /* Do any further special processing. */
15156 howto
= ppc64_elf_howto_table
[(int) r_type
];
15162 case R_PPC64_REL16_HA
:
15163 case R_PPC64_REL16DX_HA
:
15164 case R_PPC64_ADDR16_HA
:
15165 case R_PPC64_ADDR16_HIGHA
:
15166 case R_PPC64_ADDR16_HIGHERA
:
15167 case R_PPC64_ADDR16_HIGHESTA
:
15168 case R_PPC64_TOC16_HA
:
15169 case R_PPC64_SECTOFF_HA
:
15170 case R_PPC64_TPREL16_HA
:
15171 case R_PPC64_TPREL16_HIGHA
:
15172 case R_PPC64_TPREL16_HIGHERA
:
15173 case R_PPC64_TPREL16_HIGHESTA
:
15174 case R_PPC64_DTPREL16_HA
:
15175 case R_PPC64_DTPREL16_HIGHA
:
15176 case R_PPC64_DTPREL16_HIGHERA
:
15177 case R_PPC64_DTPREL16_HIGHESTA
:
15178 /* It's just possible that this symbol is a weak symbol
15179 that's not actually defined anywhere. In that case,
15180 'sec' would be NULL, and we should leave the symbol
15181 alone (it will be set to zero elsewhere in the link). */
15184 /* Fall through. */
15186 case R_PPC64_GOT16_HA
:
15187 case R_PPC64_PLTGOT16_HA
:
15188 case R_PPC64_PLT16_HA
:
15189 case R_PPC64_GOT_TLSGD16_HA
:
15190 case R_PPC64_GOT_TLSLD16_HA
:
15191 case R_PPC64_GOT_TPREL16_HA
:
15192 case R_PPC64_GOT_DTPREL16_HA
:
15193 /* Add 0x10000 if sign bit in 0:15 is set.
15194 Bits 0:15 are not used. */
15198 case R_PPC64_ADDR16_DS
:
15199 case R_PPC64_ADDR16_LO_DS
:
15200 case R_PPC64_GOT16_DS
:
15201 case R_PPC64_GOT16_LO_DS
:
15202 case R_PPC64_PLT16_LO_DS
:
15203 case R_PPC64_SECTOFF_DS
:
15204 case R_PPC64_SECTOFF_LO_DS
:
15205 case R_PPC64_TOC16_DS
:
15206 case R_PPC64_TOC16_LO_DS
:
15207 case R_PPC64_PLTGOT16_DS
:
15208 case R_PPC64_PLTGOT16_LO_DS
:
15209 case R_PPC64_GOT_TPREL16_DS
:
15210 case R_PPC64_GOT_TPREL16_LO_DS
:
15211 case R_PPC64_GOT_DTPREL16_DS
:
15212 case R_PPC64_GOT_DTPREL16_LO_DS
:
15213 case R_PPC64_TPREL16_DS
:
15214 case R_PPC64_TPREL16_LO_DS
:
15215 case R_PPC64_DTPREL16_DS
:
15216 case R_PPC64_DTPREL16_LO_DS
:
15217 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15219 /* If this reloc is against an lq, lxv, or stxv insn, then
15220 the value must be a multiple of 16. This is somewhat of
15221 a hack, but the "correct" way to do this by defining _DQ
15222 forms of all the _DS relocs bloats all reloc switches in
15223 this file. It doesn't make much sense to use these
15224 relocs in data, so testing the insn should be safe. */
15225 if ((insn
& (0x3f << 26)) == (56u << 26)
15226 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15228 relocation
+= addend
;
15229 addend
= insn
& (mask
^ 3);
15230 if ((relocation
& mask
) != 0)
15232 relocation
^= relocation
& mask
;
15233 info
->callbacks
->einfo
15234 /* xgettext:c-format */
15235 (_("%H: error: %s not a multiple of %u\n"),
15236 input_bfd
, input_section
, rel
->r_offset
,
15239 bfd_set_error (bfd_error_bad_value
);
15246 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15247 because such sections are not SEC_ALLOC and thus ld.so will
15248 not process them. */
15249 if (unresolved_reloc
15250 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15251 && h
->elf
.def_dynamic
)
15252 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15253 rel
->r_offset
) != (bfd_vma
) -1)
15255 info
->callbacks
->einfo
15256 /* xgettext:c-format */
15257 (_("%H: unresolvable %s against `%T'\n"),
15258 input_bfd
, input_section
, rel
->r_offset
,
15260 h
->elf
.root
.root
.string
);
15264 /* 16-bit fields in insns mostly have signed values, but a
15265 few insns have 16-bit unsigned values. Really, we should
15266 have different reloc types. */
15267 if (howto
->complain_on_overflow
!= complain_overflow_dont
15268 && howto
->dst_mask
== 0xffff
15269 && (input_section
->flags
& SEC_CODE
) != 0)
15271 enum complain_overflow complain
= complain_overflow_signed
;
15273 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15274 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15275 complain
= complain_overflow_bitfield
;
15276 else if (howto
->rightshift
== 0
15277 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15278 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15279 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15280 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15281 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15282 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15283 complain
= complain_overflow_unsigned
;
15284 if (howto
->complain_on_overflow
!= complain
)
15286 alt_howto
= *howto
;
15287 alt_howto
.complain_on_overflow
= complain
;
15288 howto
= &alt_howto
;
15292 if (r_type
== R_PPC64_REL16DX_HA
)
15294 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15295 if (rel
->r_offset
+ 4 > input_section
->size
)
15296 r
= bfd_reloc_outofrange
;
15299 relocation
+= addend
;
15300 relocation
-= (rel
->r_offset
15301 + input_section
->output_offset
15302 + input_section
->output_section
->vma
);
15303 relocation
= (bfd_signed_vma
) relocation
>> 16;
15304 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15306 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15307 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15309 if (relocation
+ 0x8000 > 0xffff)
15310 r
= bfd_reloc_overflow
;
15314 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15315 rel
->r_offset
, relocation
, addend
);
15317 if (r
!= bfd_reloc_ok
)
15319 char *more_info
= NULL
;
15320 const char *reloc_name
= howto
->name
;
15322 if (reloc_dest
!= DEST_NORMAL
)
15324 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15325 if (more_info
!= NULL
)
15327 strcpy (more_info
, reloc_name
);
15328 strcat (more_info
, (reloc_dest
== DEST_OPD
15329 ? " (OPD)" : " (stub)"));
15330 reloc_name
= more_info
;
15334 if (r
== bfd_reloc_overflow
)
15336 /* On code like "if (foo) foo();" don't report overflow
15337 on a branch to zero when foo is undefined. */
15339 && (reloc_dest
== DEST_STUB
15341 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15342 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15343 && is_branch_reloc (r_type
))))
15344 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15345 sym_name
, reloc_name
,
15347 input_bfd
, input_section
,
15352 info
->callbacks
->einfo
15353 /* xgettext:c-format */
15354 (_("%H: %s against `%T': error %d\n"),
15355 input_bfd
, input_section
, rel
->r_offset
,
15356 reloc_name
, sym_name
, (int) r
);
15359 if (more_info
!= NULL
)
15369 Elf_Internal_Shdr
*rel_hdr
;
15370 size_t deleted
= rel
- wrel
;
15372 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15373 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15374 if (rel_hdr
->sh_size
== 0)
15376 /* It is too late to remove an empty reloc section. Leave
15378 ??? What is wrong with an empty section??? */
15379 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15382 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15383 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15384 input_section
->reloc_count
-= deleted
;
15387 /* If we're emitting relocations, then shortly after this function
15388 returns, reloc offsets and addends for this section will be
15389 adjusted. Worse, reloc symbol indices will be for the output
15390 file rather than the input. Save a copy of the relocs for
15391 opd_entry_value. */
15392 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15395 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15396 rel
= bfd_alloc (input_bfd
, amt
);
15397 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15398 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15401 memcpy (rel
, relocs
, amt
);
15406 /* Adjust the value of any local symbols in opd sections. */
15409 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15410 const char *name ATTRIBUTE_UNUSED
,
15411 Elf_Internal_Sym
*elfsym
,
15412 asection
*input_sec
,
15413 struct elf_link_hash_entry
*h
)
15415 struct _opd_sec_data
*opd
;
15422 opd
= get_opd_info (input_sec
);
15423 if (opd
== NULL
|| opd
->adjust
== NULL
)
15426 value
= elfsym
->st_value
- input_sec
->output_offset
;
15427 if (!bfd_link_relocatable (info
))
15428 value
-= input_sec
->output_section
->vma
;
15430 adjust
= opd
->adjust
[OPD_NDX (value
)];
15434 elfsym
->st_value
+= adjust
;
15438 /* Finish up dynamic symbol handling. We set the contents of various
15439 dynamic sections here. */
15442 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15443 struct bfd_link_info
*info
,
15444 struct elf_link_hash_entry
*h
,
15445 Elf_Internal_Sym
*sym
)
15447 struct ppc_link_hash_table
*htab
;
15448 struct plt_entry
*ent
;
15449 Elf_Internal_Rela rela
;
15452 htab
= ppc_hash_table (info
);
15456 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15457 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15459 /* This symbol has an entry in the procedure linkage
15460 table. Set it up. */
15461 if (!htab
->elf
.dynamic_sections_created
15462 || h
->dynindx
== -1)
15464 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15466 && (h
->root
.type
== bfd_link_hash_defined
15467 || h
->root
.type
== bfd_link_hash_defweak
));
15468 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15469 + htab
->elf
.iplt
->output_offset
15470 + ent
->plt
.offset
);
15472 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15474 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15475 rela
.r_addend
= (h
->root
.u
.def
.value
15476 + h
->root
.u
.def
.section
->output_offset
15477 + h
->root
.u
.def
.section
->output_section
->vma
15479 loc
= (htab
->elf
.irelplt
->contents
15480 + (htab
->elf
.irelplt
->reloc_count
++
15481 * sizeof (Elf64_External_Rela
)));
15482 htab
->local_ifunc_resolver
= 1;
15486 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15487 + htab
->elf
.splt
->output_offset
15488 + ent
->plt
.offset
);
15489 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15490 rela
.r_addend
= ent
->addend
;
15491 loc
= (htab
->elf
.srelplt
->contents
15492 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15493 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15494 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15495 htab
->maybe_local_ifunc_resolver
= 1;
15497 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15499 if (!htab
->opd_abi
)
15501 if (!h
->def_regular
)
15503 /* Mark the symbol as undefined, rather than as
15504 defined in glink. Leave the value if there were
15505 any relocations where pointer equality matters
15506 (this is a clue for the dynamic linker, to make
15507 function pointer comparisons work between an
15508 application and shared library), otherwise set it
15510 sym
->st_shndx
= SHN_UNDEF
;
15511 if (!h
->pointer_equality_needed
)
15513 else if (!h
->ref_regular_nonweak
)
15515 /* This breaks function pointer comparisons, but
15516 that is better than breaking tests for a NULL
15517 function pointer. */
15526 /* This symbol needs a copy reloc. Set it up. */
15529 if (h
->dynindx
== -1
15530 || (h
->root
.type
!= bfd_link_hash_defined
15531 && h
->root
.type
!= bfd_link_hash_defweak
)
15532 || htab
->elf
.srelbss
== NULL
15533 || htab
->elf
.sreldynrelro
== NULL
)
15536 rela
.r_offset
= (h
->root
.u
.def
.value
15537 + h
->root
.u
.def
.section
->output_section
->vma
15538 + h
->root
.u
.def
.section
->output_offset
);
15539 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15541 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15542 srel
= htab
->elf
.sreldynrelro
;
15544 srel
= htab
->elf
.srelbss
;
15545 loc
= srel
->contents
;
15546 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15547 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15553 /* Used to decide how to sort relocs in an optimal manner for the
15554 dynamic linker, before writing them out. */
15556 static enum elf_reloc_type_class
15557 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15558 const asection
*rel_sec
,
15559 const Elf_Internal_Rela
*rela
)
15561 enum elf_ppc64_reloc_type r_type
;
15562 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15564 if (rel_sec
== htab
->elf
.irelplt
)
15565 return reloc_class_ifunc
;
15567 r_type
= ELF64_R_TYPE (rela
->r_info
);
15570 case R_PPC64_RELATIVE
:
15571 return reloc_class_relative
;
15572 case R_PPC64_JMP_SLOT
:
15573 return reloc_class_plt
;
15575 return reloc_class_copy
;
15577 return reloc_class_normal
;
15581 /* Finish up the dynamic sections. */
15584 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15585 struct bfd_link_info
*info
)
15587 struct ppc_link_hash_table
*htab
;
15591 htab
= ppc_hash_table (info
);
15595 dynobj
= htab
->elf
.dynobj
;
15596 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15598 if (htab
->elf
.dynamic_sections_created
)
15600 Elf64_External_Dyn
*dyncon
, *dynconend
;
15602 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15605 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15606 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15607 for (; dyncon
< dynconend
; dyncon
++)
15609 Elf_Internal_Dyn dyn
;
15612 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15619 case DT_PPC64_GLINK
:
15621 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15622 /* We stupidly defined DT_PPC64_GLINK to be the start
15623 of glink rather than the first entry point, which is
15624 what ld.so needs, and now have a bigger stub to
15625 support automatic multiple TOCs. */
15626 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15630 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15633 dyn
.d_un
.d_ptr
= s
->vma
;
15637 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15638 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15641 case DT_PPC64_OPDSZ
:
15642 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15645 dyn
.d_un
.d_val
= s
->size
;
15649 s
= htab
->elf
.splt
;
15650 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15654 s
= htab
->elf
.srelplt
;
15655 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15659 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15663 if (htab
->local_ifunc_resolver
)
15664 info
->callbacks
->einfo
15665 (_("%X%P: text relocations and GNU indirect "
15666 "functions will result in a segfault at runtime\n"));
15667 else if (htab
->maybe_local_ifunc_resolver
)
15668 info
->callbacks
->einfo
15669 (_("%P: warning: text relocations and GNU indirect "
15670 "functions may result in a segfault at runtime\n"));
15674 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15678 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15679 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15681 /* Fill in the first entry in the global offset table.
15682 We use it to hold the link-time TOCbase. */
15683 bfd_put_64 (output_bfd
,
15684 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15685 htab
->elf
.sgot
->contents
);
15687 /* Set .got entry size. */
15688 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15691 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15692 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15694 /* Set .plt entry size. */
15695 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15696 = PLT_ENTRY_SIZE (htab
);
15699 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15700 brlt ourselves if emitrelocations. */
15701 if (htab
->brlt
!= NULL
15702 && htab
->brlt
->reloc_count
!= 0
15703 && !_bfd_elf_link_output_relocs (output_bfd
,
15705 elf_section_data (htab
->brlt
)->rela
.hdr
,
15706 elf_section_data (htab
->brlt
)->relocs
,
15710 if (htab
->glink
!= NULL
15711 && htab
->glink
->reloc_count
!= 0
15712 && !_bfd_elf_link_output_relocs (output_bfd
,
15714 elf_section_data (htab
->glink
)->rela
.hdr
,
15715 elf_section_data (htab
->glink
)->relocs
,
15719 if (htab
->glink_eh_frame
!= NULL
15720 && htab
->glink_eh_frame
->size
!= 0)
15724 asection
*stub_sec
;
15727 p
= htab
->glink_eh_frame
->contents
;
15728 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15729 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15731 stub_sec
= stub_sec
->next
)
15732 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15738 /* Offset to stub section. */
15739 val
= (stub_sec
->output_section
->vma
15740 + stub_sec
->output_offset
);
15741 val
-= (htab
->glink_eh_frame
->output_section
->vma
15742 + htab
->glink_eh_frame
->output_offset
15743 + (p
- htab
->glink_eh_frame
->contents
));
15744 if (val
+ 0x80000000 > 0xffffffff)
15746 info
->callbacks
->einfo
15747 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15751 bfd_put_32 (dynobj
, val
, p
);
15753 /* stub section size. */
15755 /* Augmentation. */
15758 p
+= ((17 + align
- 1) & -align
) - 17;
15760 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15766 /* Offset to .glink. */
15767 val
= (htab
->glink
->output_section
->vma
15768 + htab
->glink
->output_offset
15770 val
-= (htab
->glink_eh_frame
->output_section
->vma
15771 + htab
->glink_eh_frame
->output_offset
15772 + (p
- htab
->glink_eh_frame
->contents
));
15773 if (val
+ 0x80000000 > 0xffffffff)
15775 info
->callbacks
->einfo
15776 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15777 htab
->glink
->name
);
15780 bfd_put_32 (dynobj
, val
, p
);
15784 /* Augmentation. */
15788 p
+= ((24 + align
- 1) & -align
) - 24;
15791 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15792 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15793 htab
->glink_eh_frame
,
15794 htab
->glink_eh_frame
->contents
))
15798 /* We need to handle writing out multiple GOT sections ourselves,
15799 since we didn't add them to DYNOBJ. We know dynobj is the first
15801 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15805 if (!is_ppc64_elf (dynobj
))
15808 s
= ppc64_elf_tdata (dynobj
)->got
;
15811 && s
->output_section
!= bfd_abs_section_ptr
15812 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15813 s
->contents
, s
->output_offset
,
15816 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15819 && s
->output_section
!= bfd_abs_section_ptr
15820 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15821 s
->contents
, s
->output_offset
,
15829 #include "elf64-target.h"
15831 /* FreeBSD support */
15833 #undef TARGET_LITTLE_SYM
15834 #undef TARGET_LITTLE_NAME
15836 #undef TARGET_BIG_SYM
15837 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15838 #undef TARGET_BIG_NAME
15839 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15842 #define ELF_OSABI ELFOSABI_FREEBSD
15845 #define elf64_bed elf64_powerpc_fbsd_bed
15847 #include "elf64-target.h"