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
3789 function selects those that must be copied when linking a shared
3790 library or PIE, even when the symbol is local. */
3793 must_be_dyn_reloc (struct bfd_link_info
*info
,
3794 enum elf_ppc64_reloc_type r_type
)
3799 /* Only relative relocs can be resolved when the object load
3800 address isn't fixed. DTPREL64 is excluded because the
3801 dynamic linker needs to differentiate global dynamic from
3802 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3810 case R_PPC64_TPREL16
:
3811 case R_PPC64_TPREL16_LO
:
3812 case R_PPC64_TPREL16_HI
:
3813 case R_PPC64_TPREL16_HA
:
3814 case R_PPC64_TPREL16_DS
:
3815 case R_PPC64_TPREL16_LO_DS
:
3816 case R_PPC64_TPREL16_HIGH
:
3817 case R_PPC64_TPREL16_HIGHA
:
3818 case R_PPC64_TPREL16_HIGHER
:
3819 case R_PPC64_TPREL16_HIGHERA
:
3820 case R_PPC64_TPREL16_HIGHEST
:
3821 case R_PPC64_TPREL16_HIGHESTA
:
3822 case R_PPC64_TPREL64
:
3823 /* These relocations are relative but in a shared library the
3824 linker doesn't know the thread pointer base. */
3825 return bfd_link_dll (info
);
3829 /* Whether an undefined weak symbol should resolve to its link-time
3830 value, even in PIC or PIE objects. */
3831 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3832 ((H)->root.type == bfd_link_hash_undefweak \
3833 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3834 || (INFO)->dynamic_undefined_weak == 0))
3836 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3837 copying dynamic variables from a shared lib into an app's dynbss
3838 section, and instead use a dynamic relocation to point into the
3839 shared lib. With code that gcc generates, it's vital that this be
3840 enabled; In the PowerPC64 ABI, the address of a function is actually
3841 the address of a function descriptor, which resides in the .opd
3842 section. gcc uses the descriptor directly rather than going via the
3843 GOT as some other ABI's do, which means that initialized function
3844 pointers must reference the descriptor. Thus, a function pointer
3845 initialized to the address of a function in a shared library will
3846 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3847 redefines the function descriptor symbol to point to the copy. This
3848 presents a problem as a plt entry for that function is also
3849 initialized from the function descriptor symbol and the copy reloc
3850 may not be initialized first. */
3851 #define ELIMINATE_COPY_RELOCS 1
3853 /* Section name for stubs is the associated section name plus this
3855 #define STUB_SUFFIX ".stub"
3858 ppc_stub_long_branch:
3859 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3860 destination, but a 24 bit branch in a stub section will reach.
3863 ppc_stub_plt_branch:
3864 Similar to the above, but a 24 bit branch in the stub section won't
3865 reach its destination.
3866 . addis %r11,%r2,xxx@toc@ha
3867 . ld %r12,xxx@toc@l(%r11)
3872 Used to call a function in a shared library. If it so happens that
3873 the plt entry referenced crosses a 64k boundary, then an extra
3874 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3876 . addis %r11,%r2,xxx@toc@ha
3877 . ld %r12,xxx+0@toc@l(%r11)
3879 . ld %r2,xxx+8@toc@l(%r11)
3880 . ld %r11,xxx+16@toc@l(%r11)
3883 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3884 code to adjust the value and save r2 to support multiple toc sections.
3885 A ppc_stub_long_branch with an r2 offset looks like:
3887 . addis %r2,%r2,off@ha
3888 . addi %r2,%r2,off@l
3891 A ppc_stub_plt_branch with an r2 offset looks like:
3893 . addis %r11,%r2,xxx@toc@ha
3894 . ld %r12,xxx@toc@l(%r11)
3895 . addis %r2,%r2,off@ha
3896 . addi %r2,%r2,off@l
3900 In cases where the "addis" instruction would add zero, the "addis" is
3901 omitted and following instructions modified slightly in some cases.
3904 enum ppc_stub_type
{
3906 ppc_stub_long_branch
,
3907 ppc_stub_long_branch_r2off
,
3908 ppc_stub_plt_branch
,
3909 ppc_stub_plt_branch_r2off
,
3911 ppc_stub_plt_call_r2save
,
3912 ppc_stub_global_entry
,
3916 /* Information on stub grouping. */
3919 /* The stub section. */
3921 /* This is the section to which stubs in the group will be attached. */
3924 struct map_stub
*next
;
3925 /* Whether to emit a copy of register save/restore functions in this
3928 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3929 or -1u if no such stub with bctrl exists. */
3930 unsigned int tls_get_addr_opt_bctrl
;
3933 struct ppc_stub_hash_entry
{
3935 /* Base hash table entry structure. */
3936 struct bfd_hash_entry root
;
3938 enum ppc_stub_type stub_type
;
3940 /* Group information. */
3941 struct map_stub
*group
;
3943 /* Offset within stub_sec of the beginning of this stub. */
3944 bfd_vma stub_offset
;
3946 /* Given the symbol's value and its section we can determine its final
3947 value when building the stubs (so the stub knows where to jump. */
3948 bfd_vma target_value
;
3949 asection
*target_section
;
3951 /* The symbol table entry, if any, that this was derived from. */
3952 struct ppc_link_hash_entry
*h
;
3953 struct plt_entry
*plt_ent
;
3955 /* Symbol st_other. */
3956 unsigned char other
;
3959 struct ppc_branch_hash_entry
{
3961 /* Base hash table entry structure. */
3962 struct bfd_hash_entry root
;
3964 /* Offset within branch lookup table. */
3965 unsigned int offset
;
3967 /* Generation marker. */
3971 /* Used to track dynamic relocations for local symbols. */
3972 struct ppc_dyn_relocs
3974 struct ppc_dyn_relocs
*next
;
3976 /* The input section of the reloc. */
3979 /* Total number of relocs copied for the input section. */
3980 unsigned int count
: 31;
3982 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3983 unsigned int ifunc
: 1;
3986 struct ppc_link_hash_entry
3988 struct elf_link_hash_entry elf
;
3991 /* A pointer to the most recently used stub hash entry against this
3993 struct ppc_stub_hash_entry
*stub_cache
;
3995 /* A pointer to the next symbol starting with a '.' */
3996 struct ppc_link_hash_entry
*next_dot_sym
;
3999 /* Track dynamic relocs copied for this symbol. */
4000 struct elf_dyn_relocs
*dyn_relocs
;
4002 /* Chain of aliases referring to a weakdef. */
4003 struct ppc_link_hash_entry
*weakref
;
4005 /* Link between function code and descriptor symbols. */
4006 struct ppc_link_hash_entry
*oh
;
4008 /* Flag function code and descriptor symbols. */
4009 unsigned int is_func
:1;
4010 unsigned int is_func_descriptor
:1;
4011 unsigned int fake
:1;
4013 /* Whether global opd/toc sym has been adjusted or not.
4014 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4015 should be set for all globals defined in any opd/toc section. */
4016 unsigned int adjust_done
:1;
4018 /* Set if this is an out-of-line register save/restore function,
4019 with non-standard calling convention. */
4020 unsigned int save_res
:1;
4022 /* Set if a duplicate symbol with non-zero localentry is detected,
4023 even when the duplicate symbol does not provide a definition. */
4024 unsigned int non_zero_localentry
:1;
4026 /* Contexts in which symbol is used in the GOT (or TOC).
4027 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4028 corresponding relocs are encountered during check_relocs.
4029 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4030 indicate the corresponding GOT entry type is not needed.
4031 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4032 a TPREL one. We use a separate flag rather than setting TPREL
4033 just for convenience in distinguishing the two cases. */
4034 #define TLS_GD 1 /* GD reloc. */
4035 #define TLS_LD 2 /* LD reloc. */
4036 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4037 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4038 #define TLS_TLS 16 /* Any TLS reloc. */
4039 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4040 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4041 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4042 unsigned char tls_mask
;
4045 /* ppc64 ELF linker hash table. */
4047 struct ppc_link_hash_table
4049 struct elf_link_hash_table elf
;
4051 /* The stub hash table. */
4052 struct bfd_hash_table stub_hash_table
;
4054 /* Another hash table for plt_branch stubs. */
4055 struct bfd_hash_table branch_hash_table
;
4057 /* Hash table for function prologue tocsave. */
4058 htab_t tocsave_htab
;
4060 /* Various options and other info passed from the linker. */
4061 struct ppc64_elf_params
*params
;
4063 /* The size of sec_info below. */
4064 unsigned int sec_info_arr_size
;
4066 /* Per-section array of extra section info. Done this way rather
4067 than as part of ppc64_elf_section_data so we have the info for
4068 non-ppc64 sections. */
4071 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4076 /* The section group that this section belongs to. */
4077 struct map_stub
*group
;
4078 /* A temp section list pointer. */
4083 /* Linked list of groups. */
4084 struct map_stub
*group
;
4086 /* Temp used when calculating TOC pointers. */
4089 asection
*toc_first_sec
;
4091 /* Used when adding symbols. */
4092 struct ppc_link_hash_entry
*dot_syms
;
4094 /* Shortcuts to get to dynamic linker sections. */
4099 asection
*glink_eh_frame
;
4101 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4102 struct ppc_link_hash_entry
*tls_get_addr
;
4103 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4105 /* The size of reliplt used by got entry relocs. */
4106 bfd_size_type got_reli_size
;
4109 unsigned long stub_count
[ppc_stub_global_entry
];
4111 /* Number of stubs against global syms. */
4112 unsigned long stub_globals
;
4114 /* Set if we're linking code with function descriptors. */
4115 unsigned int opd_abi
:1;
4117 /* Support for multiple toc sections. */
4118 unsigned int do_multi_toc
:1;
4119 unsigned int multi_toc_needed
:1;
4120 unsigned int second_toc_pass
:1;
4121 unsigned int do_toc_opt
:1;
4123 /* Set if tls optimization is enabled. */
4124 unsigned int do_tls_opt
:1;
4127 unsigned int stub_error
:1;
4129 /* Whether func_desc_adjust needs to be run over symbols. */
4130 unsigned int need_func_desc_adj
:1;
4132 /* Whether there exist local gnu indirect function resolvers,
4133 referenced by dynamic relocations. */
4134 unsigned int local_ifunc_resolver
:1;
4135 unsigned int maybe_local_ifunc_resolver
:1;
4137 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4138 unsigned int has_plt_localentry0
:1;
4140 /* Incremented every time we size stubs. */
4141 unsigned int stub_iteration
;
4143 /* Small local sym cache. */
4144 struct sym_cache sym_cache
;
4147 /* Rename some of the generic section flags to better document how they
4150 /* Nonzero if this section has TLS related relocations. */
4151 #define has_tls_reloc sec_flg0
4153 /* Nonzero if this section has a call to __tls_get_addr. */
4154 #define has_tls_get_addr_call sec_flg1
4156 /* Nonzero if this section has any toc or got relocs. */
4157 #define has_toc_reloc sec_flg2
4159 /* Nonzero if this section has a call to another section that uses
4161 #define makes_toc_func_call sec_flg3
4163 /* Recursion protection when determining above flag. */
4164 #define call_check_in_progress sec_flg4
4165 #define call_check_done sec_flg5
4167 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4169 #define ppc_hash_table(p) \
4170 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4171 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4173 #define ppc_stub_hash_lookup(table, string, create, copy) \
4174 ((struct ppc_stub_hash_entry *) \
4175 bfd_hash_lookup ((table), (string), (create), (copy)))
4177 #define ppc_branch_hash_lookup(table, string, create, copy) \
4178 ((struct ppc_branch_hash_entry *) \
4179 bfd_hash_lookup ((table), (string), (create), (copy)))
4181 /* Create an entry in the stub hash table. */
4183 static struct bfd_hash_entry
*
4184 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4185 struct bfd_hash_table
*table
,
4188 /* Allocate the structure if it has not already been allocated by a
4192 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4197 /* Call the allocation method of the superclass. */
4198 entry
= bfd_hash_newfunc (entry
, table
, string
);
4201 struct ppc_stub_hash_entry
*eh
;
4203 /* Initialize the local fields. */
4204 eh
= (struct ppc_stub_hash_entry
*) entry
;
4205 eh
->stub_type
= ppc_stub_none
;
4207 eh
->stub_offset
= 0;
4208 eh
->target_value
= 0;
4209 eh
->target_section
= NULL
;
4218 /* Create an entry in the branch hash table. */
4220 static struct bfd_hash_entry
*
4221 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4222 struct bfd_hash_table
*table
,
4225 /* Allocate the structure if it has not already been allocated by a
4229 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4234 /* Call the allocation method of the superclass. */
4235 entry
= bfd_hash_newfunc (entry
, table
, string
);
4238 struct ppc_branch_hash_entry
*eh
;
4240 /* Initialize the local fields. */
4241 eh
= (struct ppc_branch_hash_entry
*) entry
;
4249 /* Create an entry in a ppc64 ELF linker hash table. */
4251 static struct bfd_hash_entry
*
4252 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4253 struct bfd_hash_table
*table
,
4256 /* Allocate the structure if it has not already been allocated by a
4260 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4265 /* Call the allocation method of the superclass. */
4266 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4269 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4271 memset (&eh
->u
.stub_cache
, 0,
4272 (sizeof (struct ppc_link_hash_entry
)
4273 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4275 /* When making function calls, old ABI code references function entry
4276 points (dot symbols), while new ABI code references the function
4277 descriptor symbol. We need to make any combination of reference and
4278 definition work together, without breaking archive linking.
4280 For a defined function "foo" and an undefined call to "bar":
4281 An old object defines "foo" and ".foo", references ".bar" (possibly
4283 A new object defines "foo" and references "bar".
4285 A new object thus has no problem with its undefined symbols being
4286 satisfied by definitions in an old object. On the other hand, the
4287 old object won't have ".bar" satisfied by a new object.
4289 Keep a list of newly added dot-symbols. */
4291 if (string
[0] == '.')
4293 struct ppc_link_hash_table
*htab
;
4295 htab
= (struct ppc_link_hash_table
*) table
;
4296 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4297 htab
->dot_syms
= eh
;
4304 struct tocsave_entry
{
4310 tocsave_htab_hash (const void *p
)
4312 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4313 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4317 tocsave_htab_eq (const void *p1
, const void *p2
)
4319 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4320 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4321 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4324 /* Destroy a ppc64 ELF linker hash table. */
4327 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4329 struct ppc_link_hash_table
*htab
;
4331 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4332 if (htab
->tocsave_htab
)
4333 htab_delete (htab
->tocsave_htab
);
4334 bfd_hash_table_free (&htab
->branch_hash_table
);
4335 bfd_hash_table_free (&htab
->stub_hash_table
);
4336 _bfd_elf_link_hash_table_free (obfd
);
4339 /* Create a ppc64 ELF linker hash table. */
4341 static struct bfd_link_hash_table
*
4342 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4344 struct ppc_link_hash_table
*htab
;
4345 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4347 htab
= bfd_zmalloc (amt
);
4351 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4352 sizeof (struct ppc_link_hash_entry
),
4359 /* Init the stub hash table too. */
4360 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4361 sizeof (struct ppc_stub_hash_entry
)))
4363 _bfd_elf_link_hash_table_free (abfd
);
4367 /* And the branch hash table. */
4368 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4369 sizeof (struct ppc_branch_hash_entry
)))
4371 bfd_hash_table_free (&htab
->stub_hash_table
);
4372 _bfd_elf_link_hash_table_free (abfd
);
4376 htab
->tocsave_htab
= htab_try_create (1024,
4380 if (htab
->tocsave_htab
== NULL
)
4382 ppc64_elf_link_hash_table_free (abfd
);
4385 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4387 /* Initializing two fields of the union is just cosmetic. We really
4388 only care about glist, but when compiled on a 32-bit host the
4389 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4390 debugger inspection of these fields look nicer. */
4391 htab
->elf
.init_got_refcount
.refcount
= 0;
4392 htab
->elf
.init_got_refcount
.glist
= NULL
;
4393 htab
->elf
.init_plt_refcount
.refcount
= 0;
4394 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4395 htab
->elf
.init_got_offset
.offset
= 0;
4396 htab
->elf
.init_got_offset
.glist
= NULL
;
4397 htab
->elf
.init_plt_offset
.offset
= 0;
4398 htab
->elf
.init_plt_offset
.glist
= NULL
;
4400 return &htab
->elf
.root
;
4403 /* Create sections for linker generated code. */
4406 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4408 struct ppc_link_hash_table
*htab
;
4411 htab
= ppc_hash_table (info
);
4413 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4414 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4415 if (htab
->params
->save_restore_funcs
)
4417 /* Create .sfpr for code to save and restore fp regs. */
4418 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4420 if (htab
->sfpr
== NULL
4421 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4425 if (bfd_link_relocatable (info
))
4428 /* Create .glink for lazy dynamic linking support. */
4429 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4431 if (htab
->glink
== NULL
4432 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4435 if (!info
->no_ld_generated_unwind_info
)
4437 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4438 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4439 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4442 if (htab
->glink_eh_frame
== NULL
4443 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4447 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4448 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4449 if (htab
->elf
.iplt
== NULL
4450 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4453 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4454 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4456 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4457 if (htab
->elf
.irelplt
== NULL
4458 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4461 /* Create branch lookup table for plt_branch stubs. */
4462 flags
= (SEC_ALLOC
| SEC_LOAD
4463 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4464 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4466 if (htab
->brlt
== NULL
4467 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4470 if (!bfd_link_pic (info
))
4473 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4474 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4475 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4478 if (htab
->relbrlt
== NULL
4479 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4485 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4488 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4489 struct ppc64_elf_params
*params
)
4491 struct ppc_link_hash_table
*htab
;
4493 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4495 /* Always hook our dynamic sections into the first bfd, which is the
4496 linker created stub bfd. This ensures that the GOT header is at
4497 the start of the output TOC section. */
4498 htab
= ppc_hash_table (info
);
4499 htab
->elf
.dynobj
= params
->stub_bfd
;
4500 htab
->params
= params
;
4502 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4505 /* Build a name for an entry in the stub hash table. */
4508 ppc_stub_name (const asection
*input_section
,
4509 const asection
*sym_sec
,
4510 const struct ppc_link_hash_entry
*h
,
4511 const Elf_Internal_Rela
*rel
)
4516 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4517 offsets from a sym as a branch target? In fact, we could
4518 probably assume the addend is always zero. */
4519 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4523 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4524 stub_name
= bfd_malloc (len
);
4525 if (stub_name
== NULL
)
4528 len
= sprintf (stub_name
, "%08x.%s+%x",
4529 input_section
->id
& 0xffffffff,
4530 h
->elf
.root
.root
.string
,
4531 (int) rel
->r_addend
& 0xffffffff);
4535 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4536 stub_name
= bfd_malloc (len
);
4537 if (stub_name
== NULL
)
4540 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4541 input_section
->id
& 0xffffffff,
4542 sym_sec
->id
& 0xffffffff,
4543 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4544 (int) rel
->r_addend
& 0xffffffff);
4546 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4547 stub_name
[len
- 2] = 0;
4551 /* Look up an entry in the stub hash. Stub entries are cached because
4552 creating the stub name takes a bit of time. */
4554 static struct ppc_stub_hash_entry
*
4555 ppc_get_stub_entry (const asection
*input_section
,
4556 const asection
*sym_sec
,
4557 struct ppc_link_hash_entry
*h
,
4558 const Elf_Internal_Rela
*rel
,
4559 struct ppc_link_hash_table
*htab
)
4561 struct ppc_stub_hash_entry
*stub_entry
;
4562 struct map_stub
*group
;
4564 /* If this input section is part of a group of sections sharing one
4565 stub section, then use the id of the first section in the group.
4566 Stub names need to include a section id, as there may well be
4567 more than one stub used to reach say, printf, and we need to
4568 distinguish between them. */
4569 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4573 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4574 && h
->u
.stub_cache
->h
== h
4575 && h
->u
.stub_cache
->group
== group
)
4577 stub_entry
= h
->u
.stub_cache
;
4583 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4584 if (stub_name
== NULL
)
4587 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4588 stub_name
, FALSE
, FALSE
);
4590 h
->u
.stub_cache
= stub_entry
;
4598 /* Add a new stub entry to the stub hash. Not all fields of the new
4599 stub entry are initialised. */
4601 static struct ppc_stub_hash_entry
*
4602 ppc_add_stub (const char *stub_name
,
4604 struct bfd_link_info
*info
)
4606 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4607 struct map_stub
*group
;
4610 struct ppc_stub_hash_entry
*stub_entry
;
4612 group
= htab
->sec_info
[section
->id
].u
.group
;
4613 link_sec
= group
->link_sec
;
4614 stub_sec
= group
->stub_sec
;
4615 if (stub_sec
== NULL
)
4621 namelen
= strlen (link_sec
->name
);
4622 len
= namelen
+ sizeof (STUB_SUFFIX
);
4623 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4627 memcpy (s_name
, link_sec
->name
, namelen
);
4628 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4629 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4630 if (stub_sec
== NULL
)
4632 group
->stub_sec
= stub_sec
;
4635 /* Enter this entry into the linker stub hash table. */
4636 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4638 if (stub_entry
== NULL
)
4640 /* xgettext:c-format */
4641 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4642 section
->owner
, stub_name
);
4646 stub_entry
->group
= group
;
4647 stub_entry
->stub_offset
= 0;
4651 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4652 not already done. */
4655 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4657 asection
*got
, *relgot
;
4659 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4661 if (!is_ppc64_elf (abfd
))
4667 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4670 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4671 | SEC_LINKER_CREATED
);
4673 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4675 || !bfd_set_section_alignment (abfd
, got
, 3))
4678 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4679 flags
| SEC_READONLY
);
4681 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4684 ppc64_elf_tdata (abfd
)->got
= got
;
4685 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4689 /* Follow indirect and warning symbol links. */
4691 static inline struct bfd_link_hash_entry
*
4692 follow_link (struct bfd_link_hash_entry
*h
)
4694 while (h
->type
== bfd_link_hash_indirect
4695 || h
->type
== bfd_link_hash_warning
)
4700 static inline struct elf_link_hash_entry
*
4701 elf_follow_link (struct elf_link_hash_entry
*h
)
4703 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4706 static inline struct ppc_link_hash_entry
*
4707 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4709 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4712 /* Merge PLT info on FROM with that on TO. */
4715 move_plt_plist (struct ppc_link_hash_entry
*from
,
4716 struct ppc_link_hash_entry
*to
)
4718 if (from
->elf
.plt
.plist
!= NULL
)
4720 if (to
->elf
.plt
.plist
!= NULL
)
4722 struct plt_entry
**entp
;
4723 struct plt_entry
*ent
;
4725 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4727 struct plt_entry
*dent
;
4729 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4730 if (dent
->addend
== ent
->addend
)
4732 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4739 *entp
= to
->elf
.plt
.plist
;
4742 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4743 from
->elf
.plt
.plist
= NULL
;
4747 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4750 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4751 struct elf_link_hash_entry
*dir
,
4752 struct elf_link_hash_entry
*ind
)
4754 struct ppc_link_hash_entry
*edir
, *eind
;
4756 edir
= (struct ppc_link_hash_entry
*) dir
;
4757 eind
= (struct ppc_link_hash_entry
*) ind
;
4759 edir
->is_func
|= eind
->is_func
;
4760 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4761 edir
->tls_mask
|= eind
->tls_mask
;
4762 if (eind
->oh
!= NULL
)
4763 edir
->oh
= ppc_follow_link (eind
->oh
);
4765 /* If called to transfer flags for a weakdef during processing
4766 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4767 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4768 if (!(ELIMINATE_COPY_RELOCS
4769 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4770 && edir
->elf
.dynamic_adjusted
))
4771 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4773 if (edir
->elf
.versioned
!= versioned_hidden
)
4774 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4775 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4776 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4777 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4778 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4780 /* If we were called to copy over info for a weak sym, don't copy
4781 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4782 in order to simplify readonly_dynrelocs and save a field in the
4783 symbol hash entry, but that means dyn_relocs can't be used in any
4784 tests about a specific symbol, or affect other symbol flags which
4786 Chain weakdefs so we can get from the weakdef back to an alias.
4787 The list is circular so that we don't need to use u.weakdef as
4788 well as this list to look at all aliases. */
4789 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4791 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4796 cur
= edir
->weakref
;
4801 /* We can be called twice for the same symbols.
4802 Don't make multiple loops. */
4806 } while (cur
!= edir
);
4808 next
= add
->weakref
;
4811 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4812 edir
->weakref
= add
;
4815 } while (add
!= NULL
&& add
!= eind
);
4819 /* Copy over any dynamic relocs we may have on the indirect sym. */
4820 if (eind
->dyn_relocs
!= NULL
)
4822 if (edir
->dyn_relocs
!= NULL
)
4824 struct elf_dyn_relocs
**pp
;
4825 struct elf_dyn_relocs
*p
;
4827 /* Add reloc counts against the indirect sym to the direct sym
4828 list. Merge any entries against the same section. */
4829 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4831 struct elf_dyn_relocs
*q
;
4833 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4834 if (q
->sec
== p
->sec
)
4836 q
->pc_count
+= p
->pc_count
;
4837 q
->count
+= p
->count
;
4844 *pp
= edir
->dyn_relocs
;
4847 edir
->dyn_relocs
= eind
->dyn_relocs
;
4848 eind
->dyn_relocs
= NULL
;
4851 /* Copy over got entries that we may have already seen to the
4852 symbol which just became indirect. */
4853 if (eind
->elf
.got
.glist
!= NULL
)
4855 if (edir
->elf
.got
.glist
!= NULL
)
4857 struct got_entry
**entp
;
4858 struct got_entry
*ent
;
4860 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4862 struct got_entry
*dent
;
4864 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4865 if (dent
->addend
== ent
->addend
4866 && dent
->owner
== ent
->owner
4867 && dent
->tls_type
== ent
->tls_type
)
4869 dent
->got
.refcount
+= ent
->got
.refcount
;
4876 *entp
= edir
->elf
.got
.glist
;
4879 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4880 eind
->elf
.got
.glist
= NULL
;
4883 /* And plt entries. */
4884 move_plt_plist (eind
, edir
);
4886 if (eind
->elf
.dynindx
!= -1)
4888 if (edir
->elf
.dynindx
!= -1)
4889 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4890 edir
->elf
.dynstr_index
);
4891 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4892 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4893 eind
->elf
.dynindx
= -1;
4894 eind
->elf
.dynstr_index
= 0;
4898 /* Find the function descriptor hash entry from the given function code
4899 hash entry FH. Link the entries via their OH fields. */
4901 static struct ppc_link_hash_entry
*
4902 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4904 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4908 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4910 fdh
= (struct ppc_link_hash_entry
*)
4911 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4915 fdh
->is_func_descriptor
= 1;
4921 fdh
= ppc_follow_link (fdh
);
4922 fdh
->is_func_descriptor
= 1;
4927 /* Make a fake function descriptor sym for the undefined code sym FH. */
4929 static struct ppc_link_hash_entry
*
4930 make_fdh (struct bfd_link_info
*info
,
4931 struct ppc_link_hash_entry
*fh
)
4933 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4934 struct bfd_link_hash_entry
*bh
= NULL
;
4935 struct ppc_link_hash_entry
*fdh
;
4936 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4940 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4941 fh
->elf
.root
.root
.string
+ 1,
4942 flags
, bfd_und_section_ptr
, 0,
4943 NULL
, FALSE
, FALSE
, &bh
))
4946 fdh
= (struct ppc_link_hash_entry
*) bh
;
4947 fdh
->elf
.non_elf
= 0;
4949 fdh
->is_func_descriptor
= 1;
4956 /* Fix function descriptor symbols defined in .opd sections to be
4960 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4961 struct bfd_link_info
*info
,
4962 Elf_Internal_Sym
*isym
,
4964 flagword
*flags ATTRIBUTE_UNUSED
,
4968 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4969 && (ibfd
->flags
& DYNAMIC
) == 0
4970 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4971 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4974 && strcmp ((*sec
)->name
, ".opd") == 0)
4978 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4979 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4980 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4982 /* If the symbol is a function defined in .opd, and the function
4983 code is in a discarded group, let it appear to be undefined. */
4984 if (!bfd_link_relocatable (info
)
4985 && (*sec
)->reloc_count
!= 0
4986 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4987 FALSE
) != (bfd_vma
) -1
4988 && discarded_section (code_sec
))
4990 *sec
= bfd_und_section_ptr
;
4991 isym
->st_shndx
= SHN_UNDEF
;
4994 else if (*sec
!= NULL
4995 && strcmp ((*sec
)->name
, ".toc") == 0
4996 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4998 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5000 htab
->params
->object_in_toc
= 1;
5003 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5005 if (abiversion (ibfd
) == 0)
5006 set_abiversion (ibfd
, 2);
5007 else if (abiversion (ibfd
) == 1)
5009 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
5010 " for ABI version 1\n"), name
);
5011 bfd_set_error (bfd_error_bad_value
);
5019 /* Merge non-visibility st_other attributes: local entry point. */
5022 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5023 const Elf_Internal_Sym
*isym
,
5024 bfd_boolean definition
,
5025 bfd_boolean dynamic
)
5027 if (definition
&& (!dynamic
|| !h
->def_regular
))
5028 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5029 | ELF_ST_VISIBILITY (h
->other
));
5032 /* Hook called on merging a symbol. We use this to clear "fake" since
5033 we now have a real symbol. */
5036 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5037 const Elf_Internal_Sym
*isym
,
5038 asection
**psec ATTRIBUTE_UNUSED
,
5039 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5040 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5041 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5042 const asection
*oldsec ATTRIBUTE_UNUSED
)
5044 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5045 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5046 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5050 /* This function makes an old ABI object reference to ".bar" cause the
5051 inclusion of a new ABI object archive that defines "bar".
5052 NAME is a symbol defined in an archive. Return a symbol in the hash
5053 table that might be satisfied by the archive symbols. */
5055 static struct elf_link_hash_entry
*
5056 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5057 struct bfd_link_info
*info
,
5060 struct elf_link_hash_entry
*h
;
5064 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5066 /* Don't return this sym if it is a fake function descriptor
5067 created by add_symbol_adjust. */
5068 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5074 len
= strlen (name
);
5075 dot_name
= bfd_alloc (abfd
, len
+ 2);
5076 if (dot_name
== NULL
)
5077 return (struct elf_link_hash_entry
*) 0 - 1;
5079 memcpy (dot_name
+ 1, name
, len
+ 1);
5080 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5081 bfd_release (abfd
, dot_name
);
5085 /* This function satisfies all old ABI object references to ".bar" if a
5086 new ABI object defines "bar". Well, at least, undefined dot symbols
5087 are made weak. This stops later archive searches from including an
5088 object if we already have a function descriptor definition. It also
5089 prevents the linker complaining about undefined symbols.
5090 We also check and correct mismatched symbol visibility here. The
5091 most restrictive visibility of the function descriptor and the
5092 function entry symbol is used. */
5095 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5097 struct ppc_link_hash_table
*htab
;
5098 struct ppc_link_hash_entry
*fdh
;
5100 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5101 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5103 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5106 if (eh
->elf
.root
.root
.string
[0] != '.')
5109 htab
= ppc_hash_table (info
);
5113 fdh
= lookup_fdh (eh
, htab
);
5115 && !bfd_link_relocatable (info
)
5116 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5117 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5118 && eh
->elf
.ref_regular
)
5120 /* Make an undefined function descriptor sym, in order to
5121 pull in an --as-needed shared lib. Archives are handled
5123 fdh
= make_fdh (info
, eh
);
5130 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5131 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5133 /* Make both descriptor and entry symbol have the most
5134 constraining visibility of either symbol. */
5135 if (entry_vis
< descr_vis
)
5136 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5137 else if (entry_vis
> descr_vis
)
5138 eh
->elf
.other
+= descr_vis
- entry_vis
;
5140 /* Propagate reference flags from entry symbol to function
5141 descriptor symbol. */
5142 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5143 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5144 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5145 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5147 if (!fdh
->elf
.forced_local
5148 && fdh
->elf
.dynindx
== -1
5149 && fdh
->elf
.versioned
!= versioned_hidden
5150 && (bfd_link_dll (info
)
5151 || fdh
->elf
.def_dynamic
5152 || fdh
->elf
.ref_dynamic
)
5153 && (eh
->elf
.ref_regular
5154 || eh
->elf
.def_regular
))
5156 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5164 /* Set up opd section info and abiversion for IBFD, and process list
5165 of dot-symbols we made in link_hash_newfunc. */
5168 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5170 struct ppc_link_hash_table
*htab
;
5171 struct ppc_link_hash_entry
**p
, *eh
;
5172 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5174 if (opd
!= NULL
&& opd
->size
!= 0)
5176 if (abiversion (ibfd
) == 0)
5177 set_abiversion (ibfd
, 1);
5178 else if (abiversion (ibfd
) >= 2)
5180 /* xgettext:c-format */
5181 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5183 ibfd
, abiversion (ibfd
));
5184 bfd_set_error (bfd_error_bad_value
);
5188 if ((ibfd
->flags
& DYNAMIC
) == 0
5189 && (opd
->flags
& SEC_RELOC
) != 0
5190 && opd
->reloc_count
!= 0
5191 && !bfd_is_abs_section (opd
->output_section
))
5193 /* Garbage collection needs some extra help with .opd sections.
5194 We don't want to necessarily keep everything referenced by
5195 relocs in .opd, as that would keep all functions. Instead,
5196 if we reference an .opd symbol (a function descriptor), we
5197 want to keep the function code symbol's section. This is
5198 easy for global symbols, but for local syms we need to keep
5199 information about the associated function section. */
5201 asection
**opd_sym_map
;
5203 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5204 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5205 if (opd_sym_map
== NULL
)
5207 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5208 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5209 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5213 if (!is_ppc64_elf (info
->output_bfd
))
5215 htab
= ppc_hash_table (info
);
5219 /* For input files without an explicit abiversion in e_flags
5220 we should have flagged any with symbol st_other bits set
5221 as ELFv1 and above flagged those with .opd as ELFv2.
5222 Set the output abiversion if not yet set, and for any input
5223 still ambiguous, take its abiversion from the output.
5224 Differences in ABI are reported later. */
5225 if (abiversion (info
->output_bfd
) == 0)
5226 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5227 else if (abiversion (ibfd
) == 0)
5228 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5230 p
= &htab
->dot_syms
;
5231 while ((eh
= *p
) != NULL
)
5234 if (&eh
->elf
== htab
->elf
.hgot
)
5236 else if (htab
->elf
.hgot
== NULL
5237 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5238 htab
->elf
.hgot
= &eh
->elf
;
5239 else if (abiversion (ibfd
) <= 1)
5241 htab
->need_func_desc_adj
= 1;
5242 if (!add_symbol_adjust (eh
, info
))
5245 p
= &eh
->u
.next_dot_sym
;
5250 /* Undo hash table changes when an --as-needed input file is determined
5251 not to be needed. */
5254 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5255 struct bfd_link_info
*info
,
5256 enum notice_asneeded_action act
)
5258 if (act
== notice_not_needed
)
5260 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5265 htab
->dot_syms
= NULL
;
5267 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5270 /* If --just-symbols against a final linked binary, then assume we need
5271 toc adjusting stubs when calling functions defined there. */
5274 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5276 if ((sec
->flags
& SEC_CODE
) != 0
5277 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5278 && is_ppc64_elf (sec
->owner
))
5280 if (abiversion (sec
->owner
) >= 2
5281 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5282 sec
->has_toc_reloc
= 1;
5284 _bfd_elf_link_just_syms (sec
, info
);
5287 static struct plt_entry
**
5288 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5289 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5291 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5292 struct plt_entry
**local_plt
;
5293 unsigned char *local_got_tls_masks
;
5295 if (local_got_ents
== NULL
)
5297 bfd_size_type size
= symtab_hdr
->sh_info
;
5299 size
*= (sizeof (*local_got_ents
)
5300 + sizeof (*local_plt
)
5301 + sizeof (*local_got_tls_masks
));
5302 local_got_ents
= bfd_zalloc (abfd
, size
);
5303 if (local_got_ents
== NULL
)
5305 elf_local_got_ents (abfd
) = local_got_ents
;
5308 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5310 struct got_entry
*ent
;
5312 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5313 if (ent
->addend
== r_addend
5314 && ent
->owner
== abfd
5315 && ent
->tls_type
== tls_type
)
5319 bfd_size_type amt
= sizeof (*ent
);
5320 ent
= bfd_alloc (abfd
, amt
);
5323 ent
->next
= local_got_ents
[r_symndx
];
5324 ent
->addend
= r_addend
;
5326 ent
->tls_type
= tls_type
;
5327 ent
->is_indirect
= FALSE
;
5328 ent
->got
.refcount
= 0;
5329 local_got_ents
[r_symndx
] = ent
;
5331 ent
->got
.refcount
+= 1;
5334 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5335 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5336 local_got_tls_masks
[r_symndx
] |= tls_type
;
5338 return local_plt
+ r_symndx
;
5342 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5344 struct plt_entry
*ent
;
5346 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5347 if (ent
->addend
== addend
)
5351 bfd_size_type amt
= sizeof (*ent
);
5352 ent
= bfd_alloc (abfd
, amt
);
5356 ent
->addend
= addend
;
5357 ent
->plt
.refcount
= 0;
5360 ent
->plt
.refcount
+= 1;
5365 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5367 return (r_type
== R_PPC64_REL24
5368 || r_type
== R_PPC64_REL14
5369 || r_type
== R_PPC64_REL14_BRTAKEN
5370 || r_type
== R_PPC64_REL14_BRNTAKEN
5371 || r_type
== R_PPC64_ADDR24
5372 || r_type
== R_PPC64_ADDR14
5373 || r_type
== R_PPC64_ADDR14_BRTAKEN
5374 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5377 /* Look through the relocs for a section during the first phase, and
5378 calculate needed space in the global offset table, procedure
5379 linkage table, and dynamic reloc sections. */
5382 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5383 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5385 struct ppc_link_hash_table
*htab
;
5386 Elf_Internal_Shdr
*symtab_hdr
;
5387 struct elf_link_hash_entry
**sym_hashes
;
5388 const Elf_Internal_Rela
*rel
;
5389 const Elf_Internal_Rela
*rel_end
;
5391 asection
**opd_sym_map
;
5392 struct elf_link_hash_entry
*tga
, *dottga
;
5394 if (bfd_link_relocatable (info
))
5397 /* Don't do anything special with non-loaded, non-alloced sections.
5398 In particular, any relocs in such sections should not affect GOT
5399 and PLT reference counting (ie. we don't allow them to create GOT
5400 or PLT entries), there's no possibility or desire to optimize TLS
5401 relocs, and there's not much point in propagating relocs to shared
5402 libs that the dynamic linker won't relocate. */
5403 if ((sec
->flags
& SEC_ALLOC
) == 0)
5406 BFD_ASSERT (is_ppc64_elf (abfd
));
5408 htab
= ppc_hash_table (info
);
5412 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5413 FALSE
, FALSE
, TRUE
);
5414 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5415 FALSE
, FALSE
, TRUE
);
5416 symtab_hdr
= &elf_symtab_hdr (abfd
);
5417 sym_hashes
= elf_sym_hashes (abfd
);
5420 if (ppc64_elf_section_data (sec
) != NULL
5421 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5422 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5424 rel_end
= relocs
+ sec
->reloc_count
;
5425 for (rel
= relocs
; rel
< rel_end
; rel
++)
5427 unsigned long r_symndx
;
5428 struct elf_link_hash_entry
*h
;
5429 enum elf_ppc64_reloc_type r_type
;
5431 struct _ppc64_elf_section_data
*ppc64_sec
;
5432 struct plt_entry
**ifunc
, **plt_list
;
5434 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5435 if (r_symndx
< symtab_hdr
->sh_info
)
5439 struct ppc_link_hash_entry
*eh
;
5441 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5442 h
= elf_follow_link (h
);
5443 eh
= (struct ppc_link_hash_entry
*) h
;
5445 /* PR15323, ref flags aren't set for references in the same
5447 h
->root
.non_ir_ref_regular
= 1;
5448 if (eh
->is_func
&& eh
->oh
!= NULL
)
5449 eh
->oh
->elf
.root
.non_ir_ref_regular
= 1;
5451 if (h
== htab
->elf
.hgot
)
5452 sec
->has_toc_reloc
= 1;
5459 if (h
->type
== STT_GNU_IFUNC
)
5462 ifunc
= &h
->plt
.plist
;
5467 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5472 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5474 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5475 rel
->r_addend
, PLT_IFUNC
);
5481 r_type
= ELF64_R_TYPE (rel
->r_info
);
5486 /* These special tls relocs tie a call to __tls_get_addr with
5487 its parameter symbol. */
5490 case R_PPC64_GOT_TLSLD16
:
5491 case R_PPC64_GOT_TLSLD16_LO
:
5492 case R_PPC64_GOT_TLSLD16_HI
:
5493 case R_PPC64_GOT_TLSLD16_HA
:
5494 tls_type
= TLS_TLS
| TLS_LD
;
5497 case R_PPC64_GOT_TLSGD16
:
5498 case R_PPC64_GOT_TLSGD16_LO
:
5499 case R_PPC64_GOT_TLSGD16_HI
:
5500 case R_PPC64_GOT_TLSGD16_HA
:
5501 tls_type
= TLS_TLS
| TLS_GD
;
5504 case R_PPC64_GOT_TPREL16_DS
:
5505 case R_PPC64_GOT_TPREL16_LO_DS
:
5506 case R_PPC64_GOT_TPREL16_HI
:
5507 case R_PPC64_GOT_TPREL16_HA
:
5508 if (bfd_link_dll (info
))
5509 info
->flags
|= DF_STATIC_TLS
;
5510 tls_type
= TLS_TLS
| TLS_TPREL
;
5513 case R_PPC64_GOT_DTPREL16_DS
:
5514 case R_PPC64_GOT_DTPREL16_LO_DS
:
5515 case R_PPC64_GOT_DTPREL16_HI
:
5516 case R_PPC64_GOT_DTPREL16_HA
:
5517 tls_type
= TLS_TLS
| TLS_DTPREL
;
5519 sec
->has_tls_reloc
= 1;
5523 case R_PPC64_GOT16_DS
:
5524 case R_PPC64_GOT16_HA
:
5525 case R_PPC64_GOT16_HI
:
5526 case R_PPC64_GOT16_LO
:
5527 case R_PPC64_GOT16_LO_DS
:
5528 /* This symbol requires a global offset table entry. */
5529 sec
->has_toc_reloc
= 1;
5530 if (r_type
== R_PPC64_GOT_TLSLD16
5531 || r_type
== R_PPC64_GOT_TLSGD16
5532 || r_type
== R_PPC64_GOT_TPREL16_DS
5533 || r_type
== R_PPC64_GOT_DTPREL16_DS
5534 || r_type
== R_PPC64_GOT16
5535 || r_type
== R_PPC64_GOT16_DS
)
5537 htab
->do_multi_toc
= 1;
5538 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5541 if (ppc64_elf_tdata (abfd
)->got
== NULL
5542 && !create_got_section (abfd
, info
))
5547 struct ppc_link_hash_entry
*eh
;
5548 struct got_entry
*ent
;
5550 eh
= (struct ppc_link_hash_entry
*) h
;
5551 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5552 if (ent
->addend
== rel
->r_addend
5553 && ent
->owner
== abfd
5554 && ent
->tls_type
== tls_type
)
5558 bfd_size_type amt
= sizeof (*ent
);
5559 ent
= bfd_alloc (abfd
, amt
);
5562 ent
->next
= eh
->elf
.got
.glist
;
5563 ent
->addend
= rel
->r_addend
;
5565 ent
->tls_type
= tls_type
;
5566 ent
->is_indirect
= FALSE
;
5567 ent
->got
.refcount
= 0;
5568 eh
->elf
.got
.glist
= ent
;
5570 ent
->got
.refcount
+= 1;
5571 eh
->tls_mask
|= tls_type
;
5574 /* This is a global offset table entry for a local symbol. */
5575 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5576 rel
->r_addend
, tls_type
))
5579 /* We may also need a plt entry if the symbol turns out to be
5581 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5583 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5588 case R_PPC64_PLT16_HA
:
5589 case R_PPC64_PLT16_HI
:
5590 case R_PPC64_PLT16_LO
:
5593 /* This symbol requires a procedure linkage table entry. */
5598 if (h
->root
.root
.string
[0] == '.'
5599 && h
->root
.root
.string
[1] != '\0')
5600 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5601 plt_list
= &h
->plt
.plist
;
5603 if (plt_list
== NULL
)
5605 /* It does not make sense to have a procedure linkage
5606 table entry for a non-ifunc local symbol. */
5607 info
->callbacks
->einfo
5608 /* xgettext:c-format */
5609 (_("%H: %s reloc against local symbol\n"),
5610 abfd
, sec
, rel
->r_offset
,
5611 ppc64_elf_howto_table
[r_type
]->name
);
5612 bfd_set_error (bfd_error_bad_value
);
5615 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5619 /* The following relocations don't need to propagate the
5620 relocation if linking a shared object since they are
5621 section relative. */
5622 case R_PPC64_SECTOFF
:
5623 case R_PPC64_SECTOFF_LO
:
5624 case R_PPC64_SECTOFF_HI
:
5625 case R_PPC64_SECTOFF_HA
:
5626 case R_PPC64_SECTOFF_DS
:
5627 case R_PPC64_SECTOFF_LO_DS
:
5628 case R_PPC64_DTPREL16
:
5629 case R_PPC64_DTPREL16_LO
:
5630 case R_PPC64_DTPREL16_HI
:
5631 case R_PPC64_DTPREL16_HA
:
5632 case R_PPC64_DTPREL16_DS
:
5633 case R_PPC64_DTPREL16_LO_DS
:
5634 case R_PPC64_DTPREL16_HIGH
:
5635 case R_PPC64_DTPREL16_HIGHA
:
5636 case R_PPC64_DTPREL16_HIGHER
:
5637 case R_PPC64_DTPREL16_HIGHERA
:
5638 case R_PPC64_DTPREL16_HIGHEST
:
5639 case R_PPC64_DTPREL16_HIGHESTA
:
5644 case R_PPC64_REL16_LO
:
5645 case R_PPC64_REL16_HI
:
5646 case R_PPC64_REL16_HA
:
5647 case R_PPC64_REL16DX_HA
:
5650 /* Not supported as a dynamic relocation. */
5651 case R_PPC64_ADDR64_LOCAL
:
5652 if (bfd_link_pic (info
))
5654 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5656 /* xgettext:c-format */
5657 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5658 "in shared libraries and PIEs.\n"),
5659 abfd
, sec
, rel
->r_offset
,
5660 ppc64_elf_howto_table
[r_type
]->name
);
5661 bfd_set_error (bfd_error_bad_value
);
5667 case R_PPC64_TOC16_DS
:
5668 htab
->do_multi_toc
= 1;
5669 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5671 case R_PPC64_TOC16_LO
:
5672 case R_PPC64_TOC16_HI
:
5673 case R_PPC64_TOC16_HA
:
5674 case R_PPC64_TOC16_LO_DS
:
5675 sec
->has_toc_reloc
= 1;
5682 /* This relocation describes the C++ object vtable hierarchy.
5683 Reconstruct it for later use during GC. */
5684 case R_PPC64_GNU_VTINHERIT
:
5685 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5689 /* This relocation describes which C++ vtable entries are actually
5690 used. Record for later use during GC. */
5691 case R_PPC64_GNU_VTENTRY
:
5692 BFD_ASSERT (h
!= NULL
);
5694 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5699 case R_PPC64_REL14_BRTAKEN
:
5700 case R_PPC64_REL14_BRNTAKEN
:
5702 asection
*dest
= NULL
;
5704 /* Heuristic: If jumping outside our section, chances are
5705 we are going to need a stub. */
5708 /* If the sym is weak it may be overridden later, so
5709 don't assume we know where a weak sym lives. */
5710 if (h
->root
.type
== bfd_link_hash_defined
)
5711 dest
= h
->root
.u
.def
.section
;
5715 Elf_Internal_Sym
*isym
;
5717 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5722 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5726 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5735 if (h
->root
.root
.string
[0] == '.'
5736 && h
->root
.root
.string
[1] != '\0')
5737 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5739 if (h
== tga
|| h
== dottga
)
5741 sec
->has_tls_reloc
= 1;
5743 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5744 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5745 /* We have a new-style __tls_get_addr call with
5749 /* Mark this section as having an old-style call. */
5750 sec
->has_tls_get_addr_call
= 1;
5752 plt_list
= &h
->plt
.plist
;
5755 /* We may need a .plt entry if the function this reloc
5756 refers to is in a shared lib. */
5758 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5762 case R_PPC64_ADDR14
:
5763 case R_PPC64_ADDR14_BRNTAKEN
:
5764 case R_PPC64_ADDR14_BRTAKEN
:
5765 case R_PPC64_ADDR24
:
5768 case R_PPC64_TPREL64
:
5769 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5770 if (bfd_link_dll (info
))
5771 info
->flags
|= DF_STATIC_TLS
;
5774 case R_PPC64_DTPMOD64
:
5775 if (rel
+ 1 < rel_end
5776 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5777 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5778 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5780 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5783 case R_PPC64_DTPREL64
:
5784 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5786 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5787 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5788 /* This is the second reloc of a dtpmod, dtprel pair.
5789 Don't mark with TLS_DTPREL. */
5793 sec
->has_tls_reloc
= 1;
5796 struct ppc_link_hash_entry
*eh
;
5797 eh
= (struct ppc_link_hash_entry
*) h
;
5798 eh
->tls_mask
|= tls_type
;
5801 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5802 rel
->r_addend
, tls_type
))
5805 ppc64_sec
= ppc64_elf_section_data (sec
);
5806 if (ppc64_sec
->sec_type
!= sec_toc
)
5810 /* One extra to simplify get_tls_mask. */
5811 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5812 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5813 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5815 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5816 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5817 if (ppc64_sec
->u
.toc
.add
== NULL
)
5819 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5820 ppc64_sec
->sec_type
= sec_toc
;
5822 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5823 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5824 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5826 /* Mark the second slot of a GD or LD entry.
5827 -1 to indicate GD and -2 to indicate LD. */
5828 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5829 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5830 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5831 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5834 case R_PPC64_TPREL16
:
5835 case R_PPC64_TPREL16_LO
:
5836 case R_PPC64_TPREL16_HI
:
5837 case R_PPC64_TPREL16_HA
:
5838 case R_PPC64_TPREL16_DS
:
5839 case R_PPC64_TPREL16_LO_DS
:
5840 case R_PPC64_TPREL16_HIGH
:
5841 case R_PPC64_TPREL16_HIGHA
:
5842 case R_PPC64_TPREL16_HIGHER
:
5843 case R_PPC64_TPREL16_HIGHERA
:
5844 case R_PPC64_TPREL16_HIGHEST
:
5845 case R_PPC64_TPREL16_HIGHESTA
:
5846 if (bfd_link_dll (info
))
5847 info
->flags
|= DF_STATIC_TLS
;
5850 case R_PPC64_ADDR64
:
5851 if (opd_sym_map
!= NULL
5852 && rel
+ 1 < rel_end
5853 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5856 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5860 Elf_Internal_Sym
*isym
;
5862 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5867 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5868 if (s
!= NULL
&& s
!= sec
)
5869 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5874 case R_PPC64_ADDR16
:
5875 case R_PPC64_ADDR16_DS
:
5876 case R_PPC64_ADDR16_HA
:
5877 case R_PPC64_ADDR16_HI
:
5878 case R_PPC64_ADDR16_HIGH
:
5879 case R_PPC64_ADDR16_HIGHA
:
5880 case R_PPC64_ADDR16_HIGHER
:
5881 case R_PPC64_ADDR16_HIGHERA
:
5882 case R_PPC64_ADDR16_HIGHEST
:
5883 case R_PPC64_ADDR16_HIGHESTA
:
5884 case R_PPC64_ADDR16_LO
:
5885 case R_PPC64_ADDR16_LO_DS
:
5886 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5887 && rel
->r_addend
== 0)
5889 /* We may need a .plt entry if this reloc refers to a
5890 function in a shared lib. */
5891 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5893 h
->pointer_equality_needed
= 1;
5900 case R_PPC64_ADDR32
:
5901 case R_PPC64_UADDR16
:
5902 case R_PPC64_UADDR32
:
5903 case R_PPC64_UADDR64
:
5905 if (h
!= NULL
&& !bfd_link_pic (info
))
5906 /* We may need a copy reloc. */
5909 /* Don't propagate .opd relocs. */
5910 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5913 /* If we are creating a shared library, and this is a reloc
5914 against a global symbol, or a non PC relative reloc
5915 against a local symbol, then we need to copy the reloc
5916 into the shared library. However, if we are linking with
5917 -Bsymbolic, we do not need to copy a reloc against a
5918 global symbol which is defined in an object we are
5919 including in the link (i.e., DEF_REGULAR is set). At
5920 this point we have not seen all the input files, so it is
5921 possible that DEF_REGULAR is not set now but will be set
5922 later (it is never cleared). In case of a weak definition,
5923 DEF_REGULAR may be cleared later by a strong definition in
5924 a shared library. We account for that possibility below by
5925 storing information in the dyn_relocs field of the hash
5926 table entry. A similar situation occurs when creating
5927 shared libraries and symbol visibility changes render the
5930 If on the other hand, we are creating an executable, we
5931 may need to keep relocations for symbols satisfied by a
5932 dynamic library if we manage to avoid copy relocs for the
5935 if ((bfd_link_pic (info
)
5936 && (must_be_dyn_reloc (info
, r_type
)
5938 && (!SYMBOLIC_BIND (info
, h
)
5939 || h
->root
.type
== bfd_link_hash_defweak
5940 || !h
->def_regular
))))
5941 || (ELIMINATE_COPY_RELOCS
5942 && !bfd_link_pic (info
)
5944 && (h
->root
.type
== bfd_link_hash_defweak
5945 || !h
->def_regular
))
5946 || (!bfd_link_pic (info
)
5949 /* We must copy these reloc types into the output file.
5950 Create a reloc section in dynobj and make room for
5954 sreloc
= _bfd_elf_make_dynamic_reloc_section
5955 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5961 /* If this is a global symbol, we count the number of
5962 relocations we need for this symbol. */
5965 struct elf_dyn_relocs
*p
;
5966 struct elf_dyn_relocs
**head
;
5968 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5970 if (p
== NULL
|| p
->sec
!= sec
)
5972 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5982 if (!must_be_dyn_reloc (info
, r_type
))
5987 /* Track dynamic relocs needed for local syms too.
5988 We really need local syms available to do this
5990 struct ppc_dyn_relocs
*p
;
5991 struct ppc_dyn_relocs
**head
;
5992 bfd_boolean is_ifunc
;
5995 Elf_Internal_Sym
*isym
;
5997 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6002 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6006 vpp
= &elf_section_data (s
)->local_dynrel
;
6007 head
= (struct ppc_dyn_relocs
**) vpp
;
6008 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6010 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6012 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6014 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6020 p
->ifunc
= is_ifunc
;
6036 /* Merge backend specific data from an object file to the output
6037 object file when linking. */
6040 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6042 bfd
*obfd
= info
->output_bfd
;
6043 unsigned long iflags
, oflags
;
6045 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6048 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6051 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6054 iflags
= elf_elfheader (ibfd
)->e_flags
;
6055 oflags
= elf_elfheader (obfd
)->e_flags
;
6057 if (iflags
& ~EF_PPC64_ABI
)
6060 /* xgettext:c-format */
6061 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6062 bfd_set_error (bfd_error_bad_value
);
6065 else if (iflags
!= oflags
&& iflags
!= 0)
6068 /* xgettext:c-format */
6069 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6070 ibfd
, iflags
, oflags
);
6071 bfd_set_error (bfd_error_bad_value
);
6075 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6077 /* Merge Tag_compatibility attributes and any common GNU ones. */
6078 _bfd_elf_merge_object_attributes (ibfd
, info
);
6084 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6086 /* Print normal ELF private data. */
6087 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6089 if (elf_elfheader (abfd
)->e_flags
!= 0)
6093 fprintf (file
, _("private flags = 0x%lx:"),
6094 elf_elfheader (abfd
)->e_flags
);
6096 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6097 fprintf (file
, _(" [abiv%ld]"),
6098 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6105 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6106 of the code entry point, and its section, which must be in the same
6107 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6110 opd_entry_value (asection
*opd_sec
,
6112 asection
**code_sec
,
6114 bfd_boolean in_code_sec
)
6116 bfd
*opd_bfd
= opd_sec
->owner
;
6117 Elf_Internal_Rela
*relocs
;
6118 Elf_Internal_Rela
*lo
, *hi
, *look
;
6121 /* No relocs implies we are linking a --just-symbols object, or looking
6122 at a final linked executable with addr2line or somesuch. */
6123 if (opd_sec
->reloc_count
== 0)
6125 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6127 if (contents
== NULL
)
6129 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6130 return (bfd_vma
) -1;
6131 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6134 /* PR 17512: file: 64b9dfbb. */
6135 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6136 return (bfd_vma
) -1;
6138 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6139 if (code_sec
!= NULL
)
6141 asection
*sec
, *likely
= NULL
;
6147 && val
< sec
->vma
+ sec
->size
)
6153 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6155 && (sec
->flags
& SEC_LOAD
) != 0
6156 && (sec
->flags
& SEC_ALLOC
) != 0)
6161 if (code_off
!= NULL
)
6162 *code_off
= val
- likely
->vma
;
6168 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6170 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6172 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6173 /* PR 17512: file: df8e1fd6. */
6175 return (bfd_vma
) -1;
6177 /* Go find the opd reloc at the sym address. */
6179 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6183 look
= lo
+ (hi
- lo
) / 2;
6184 if (look
->r_offset
< offset
)
6186 else if (look
->r_offset
> offset
)
6190 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6192 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6193 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6195 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6196 asection
*sec
= NULL
;
6198 if (symndx
>= symtab_hdr
->sh_info
6199 && elf_sym_hashes (opd_bfd
) != NULL
)
6201 struct elf_link_hash_entry
**sym_hashes
;
6202 struct elf_link_hash_entry
*rh
;
6204 sym_hashes
= elf_sym_hashes (opd_bfd
);
6205 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6208 rh
= elf_follow_link (rh
);
6209 if (rh
->root
.type
!= bfd_link_hash_defined
6210 && rh
->root
.type
!= bfd_link_hash_defweak
)
6212 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6214 val
= rh
->root
.u
.def
.value
;
6215 sec
= rh
->root
.u
.def
.section
;
6222 Elf_Internal_Sym
*sym
;
6224 if (symndx
< symtab_hdr
->sh_info
)
6226 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6229 size_t symcnt
= symtab_hdr
->sh_info
;
6230 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6235 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6241 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6247 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6250 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6251 val
= sym
->st_value
;
6254 val
+= look
->r_addend
;
6255 if (code_off
!= NULL
)
6257 if (code_sec
!= NULL
)
6259 if (in_code_sec
&& *code_sec
!= sec
)
6264 if (sec
->output_section
!= NULL
)
6265 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6274 /* If the ELF symbol SYM might be a function in SEC, return the
6275 function size and set *CODE_OFF to the function's entry point,
6276 otherwise return zero. */
6278 static bfd_size_type
6279 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6284 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6285 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6289 if (!(sym
->flags
& BSF_SYNTHETIC
))
6290 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6292 if (strcmp (sym
->section
->name
, ".opd") == 0)
6294 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6295 bfd_vma symval
= sym
->value
;
6298 && opd
->adjust
!= NULL
6299 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6301 /* opd_entry_value will use cached relocs that have been
6302 adjusted, but with raw symbols. That means both local
6303 and global symbols need adjusting. */
6304 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6310 if (opd_entry_value (sym
->section
, symval
,
6311 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6313 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6314 symbol. This size has nothing to do with the code size of the
6315 function, which is what we're supposed to return, but the
6316 code size isn't available without looking up the dot-sym.
6317 However, doing that would be a waste of time particularly
6318 since elf_find_function will look at the dot-sym anyway.
6319 Now, elf_find_function will keep the largest size of any
6320 function sym found at the code address of interest, so return
6321 1 here to avoid it incorrectly caching a larger function size
6322 for a small function. This does mean we return the wrong
6323 size for a new-ABI function of size 24, but all that does is
6324 disable caching for such functions. */
6330 if (sym
->section
!= sec
)
6332 *code_off
= sym
->value
;
6339 /* Return true if symbol is a strong function defined in an ELFv2
6340 object with st_other localentry bits of zero, ie. its local entry
6341 point coincides with its global entry point. */
6344 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6347 && h
->type
== STT_FUNC
6348 && h
->root
.type
== bfd_link_hash_defined
6349 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6350 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6351 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6352 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6355 /* Return true if symbol is defined in a regular object file. */
6358 is_static_defined (struct elf_link_hash_entry
*h
)
6360 return ((h
->root
.type
== bfd_link_hash_defined
6361 || h
->root
.type
== bfd_link_hash_defweak
)
6362 && h
->root
.u
.def
.section
!= NULL
6363 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6366 /* If FDH is a function descriptor symbol, return the associated code
6367 entry symbol if it is defined. Return NULL otherwise. */
6369 static struct ppc_link_hash_entry
*
6370 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6372 if (fdh
->is_func_descriptor
)
6374 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6375 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6376 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6382 /* If FH is a function code entry symbol, return the associated
6383 function descriptor symbol if it is defined. Return NULL otherwise. */
6385 static struct ppc_link_hash_entry
*
6386 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6389 && fh
->oh
->is_func_descriptor
)
6391 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6392 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6393 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6399 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6401 /* Garbage collect sections, after first dealing with dot-symbols. */
6404 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6406 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6408 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6410 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6411 htab
->need_func_desc_adj
= 0;
6413 return bfd_elf_gc_sections (abfd
, info
);
6416 /* Mark all our entry sym sections, both opd and code section. */
6419 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6421 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6422 struct bfd_sym_chain
*sym
;
6427 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6429 struct ppc_link_hash_entry
*eh
, *fh
;
6432 eh
= (struct ppc_link_hash_entry
*)
6433 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6436 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6437 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6440 fh
= defined_code_entry (eh
);
6443 sec
= fh
->elf
.root
.u
.def
.section
;
6444 sec
->flags
|= SEC_KEEP
;
6446 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6447 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6448 eh
->elf
.root
.u
.def
.value
,
6449 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6450 sec
->flags
|= SEC_KEEP
;
6452 sec
= eh
->elf
.root
.u
.def
.section
;
6453 sec
->flags
|= SEC_KEEP
;
6457 /* Mark sections containing dynamically referenced symbols. When
6458 building shared libraries, we must assume that any visible symbol is
6462 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6464 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6465 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6466 struct ppc_link_hash_entry
*fdh
;
6467 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6469 /* Dynamic linking info is on the func descriptor sym. */
6470 fdh
= defined_func_desc (eh
);
6474 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6475 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6476 && (eh
->elf
.ref_dynamic
6477 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6478 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6479 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6480 && (!bfd_link_executable (info
)
6481 || info
->gc_keep_exported
6482 || info
->export_dynamic
6485 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6486 && (eh
->elf
.versioned
>= versioned
6487 || !bfd_hide_sym_by_version (info
->version_info
,
6488 eh
->elf
.root
.root
.string
)))))
6491 struct ppc_link_hash_entry
*fh
;
6493 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6495 /* Function descriptor syms cause the associated
6496 function code sym section to be marked. */
6497 fh
= defined_code_entry (eh
);
6500 code_sec
= fh
->elf
.root
.u
.def
.section
;
6501 code_sec
->flags
|= SEC_KEEP
;
6503 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6504 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6505 eh
->elf
.root
.u
.def
.value
,
6506 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6507 code_sec
->flags
|= SEC_KEEP
;
6513 /* Return the section that should be marked against GC for a given
6517 ppc64_elf_gc_mark_hook (asection
*sec
,
6518 struct bfd_link_info
*info
,
6519 Elf_Internal_Rela
*rel
,
6520 struct elf_link_hash_entry
*h
,
6521 Elf_Internal_Sym
*sym
)
6525 /* Syms return NULL if we're marking .opd, so we avoid marking all
6526 function sections, as all functions are referenced in .opd. */
6528 if (get_opd_info (sec
) != NULL
)
6533 enum elf_ppc64_reloc_type r_type
;
6534 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6536 r_type
= ELF64_R_TYPE (rel
->r_info
);
6539 case R_PPC64_GNU_VTINHERIT
:
6540 case R_PPC64_GNU_VTENTRY
:
6544 switch (h
->root
.type
)
6546 case bfd_link_hash_defined
:
6547 case bfd_link_hash_defweak
:
6548 eh
= (struct ppc_link_hash_entry
*) h
;
6549 fdh
= defined_func_desc (eh
);
6552 /* -mcall-aixdesc code references the dot-symbol on
6553 a call reloc. Mark the function descriptor too
6554 against garbage collection. */
6556 if (fdh
->elf
.u
.weakdef
!= NULL
)
6557 fdh
->elf
.u
.weakdef
->mark
= 1;
6561 /* Function descriptor syms cause the associated
6562 function code sym section to be marked. */
6563 fh
= defined_code_entry (eh
);
6566 /* They also mark their opd section. */
6567 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6569 rsec
= fh
->elf
.root
.u
.def
.section
;
6571 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6572 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6573 eh
->elf
.root
.u
.def
.value
,
6574 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6575 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6577 rsec
= h
->root
.u
.def
.section
;
6580 case bfd_link_hash_common
:
6581 rsec
= h
->root
.u
.c
.p
->section
;
6585 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6591 struct _opd_sec_data
*opd
;
6593 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6594 opd
= get_opd_info (rsec
);
6595 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6599 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6606 /* Update the .got, .plt. and dynamic reloc reference counts for the
6607 section being removed. */
6610 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6611 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6613 struct ppc_link_hash_table
*htab
;
6614 Elf_Internal_Shdr
*symtab_hdr
;
6615 struct elf_link_hash_entry
**sym_hashes
;
6616 struct got_entry
**local_got_ents
;
6617 const Elf_Internal_Rela
*rel
, *relend
;
6619 if (bfd_link_relocatable (info
))
6622 if ((sec
->flags
& SEC_ALLOC
) == 0)
6625 elf_section_data (sec
)->local_dynrel
= NULL
;
6627 htab
= ppc_hash_table (info
);
6631 symtab_hdr
= &elf_symtab_hdr (abfd
);
6632 sym_hashes
= elf_sym_hashes (abfd
);
6633 local_got_ents
= elf_local_got_ents (abfd
);
6635 relend
= relocs
+ sec
->reloc_count
;
6636 for (rel
= relocs
; rel
< relend
; rel
++)
6638 unsigned long r_symndx
;
6639 enum elf_ppc64_reloc_type r_type
;
6640 struct elf_link_hash_entry
*h
= NULL
;
6641 struct plt_entry
**plt_list
= NULL
;
6642 unsigned char tls_type
= 0;
6644 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6645 r_type
= ELF64_R_TYPE (rel
->r_info
);
6646 if (r_symndx
>= symtab_hdr
->sh_info
)
6648 struct ppc_link_hash_entry
*eh
;
6649 struct elf_dyn_relocs
**pp
;
6650 struct elf_dyn_relocs
*p
;
6652 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6653 h
= elf_follow_link (h
);
6654 eh
= (struct ppc_link_hash_entry
*) h
;
6656 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6659 /* Everything must go for SEC. */
6667 case R_PPC64_GOT_TLSLD16
:
6668 case R_PPC64_GOT_TLSLD16_LO
:
6669 case R_PPC64_GOT_TLSLD16_HI
:
6670 case R_PPC64_GOT_TLSLD16_HA
:
6671 tls_type
= TLS_TLS
| TLS_LD
;
6674 case R_PPC64_GOT_TLSGD16
:
6675 case R_PPC64_GOT_TLSGD16_LO
:
6676 case R_PPC64_GOT_TLSGD16_HI
:
6677 case R_PPC64_GOT_TLSGD16_HA
:
6678 tls_type
= TLS_TLS
| TLS_GD
;
6681 case R_PPC64_GOT_TPREL16_DS
:
6682 case R_PPC64_GOT_TPREL16_LO_DS
:
6683 case R_PPC64_GOT_TPREL16_HI
:
6684 case R_PPC64_GOT_TPREL16_HA
:
6685 tls_type
= TLS_TLS
| TLS_TPREL
;
6688 case R_PPC64_GOT_DTPREL16_DS
:
6689 case R_PPC64_GOT_DTPREL16_LO_DS
:
6690 case R_PPC64_GOT_DTPREL16_HI
:
6691 case R_PPC64_GOT_DTPREL16_HA
:
6692 tls_type
= TLS_TLS
| TLS_DTPREL
;
6696 case R_PPC64_GOT16_DS
:
6697 case R_PPC64_GOT16_HA
:
6698 case R_PPC64_GOT16_HI
:
6699 case R_PPC64_GOT16_LO
:
6700 case R_PPC64_GOT16_LO_DS
:
6703 struct got_entry
*ent
;
6708 ent
= local_got_ents
[r_symndx
];
6710 for (; ent
!= NULL
; ent
= ent
->next
)
6711 if (ent
->addend
== rel
->r_addend
6712 && ent
->owner
== abfd
6713 && ent
->tls_type
== tls_type
)
6717 if (ent
->got
.refcount
> 0)
6718 ent
->got
.refcount
-= 1;
6720 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
6721 plt_list
= &h
->plt
.plist
;
6724 case R_PPC64_PLT16_HA
:
6725 case R_PPC64_PLT16_HI
:
6726 case R_PPC64_PLT16_LO
:
6730 case R_PPC64_REL14_BRNTAKEN
:
6731 case R_PPC64_REL14_BRTAKEN
:
6734 plt_list
= &h
->plt
.plist
;
6735 else if (local_got_ents
!= NULL
)
6737 struct plt_entry
**local_plt
= (struct plt_entry
**)
6738 (local_got_ents
+ symtab_hdr
->sh_info
);
6739 unsigned char *local_got_tls_masks
= (unsigned char *)
6740 (local_plt
+ symtab_hdr
->sh_info
);
6741 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6742 plt_list
= local_plt
+ r_symndx
;
6746 case R_PPC64_ADDR64
:
6747 case R_PPC64_ADDR16
:
6748 case R_PPC64_ADDR16_DS
:
6749 case R_PPC64_ADDR16_HA
:
6750 case R_PPC64_ADDR16_HI
:
6751 case R_PPC64_ADDR16_HIGH
:
6752 case R_PPC64_ADDR16_HIGHA
:
6753 case R_PPC64_ADDR16_HIGHER
:
6754 case R_PPC64_ADDR16_HIGHERA
:
6755 case R_PPC64_ADDR16_HIGHEST
:
6756 case R_PPC64_ADDR16_HIGHESTA
:
6757 case R_PPC64_ADDR16_LO
:
6758 case R_PPC64_ADDR16_LO_DS
:
6759 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
6760 && rel
->r_addend
== 0)
6761 plt_list
= &h
->plt
.plist
;
6767 if (plt_list
!= NULL
)
6769 struct plt_entry
*ent
;
6771 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6772 if (ent
->addend
== rel
->r_addend
)
6774 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6775 ent
->plt
.refcount
-= 1;
6781 /* The maximum size of .sfpr. */
6782 #define SFPR_MAX (218*4)
6784 struct sfpr_def_parms
6786 const char name
[12];
6787 unsigned char lo
, hi
;
6788 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6789 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6792 /* Auto-generate _save*, _rest* functions in .sfpr.
6793 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6797 sfpr_define (struct bfd_link_info
*info
,
6798 const struct sfpr_def_parms
*parm
,
6801 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6803 size_t len
= strlen (parm
->name
);
6804 bfd_boolean writing
= FALSE
;
6810 memcpy (sym
, parm
->name
, len
);
6813 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6815 struct ppc_link_hash_entry
*h
;
6817 sym
[len
+ 0] = i
/ 10 + '0';
6818 sym
[len
+ 1] = i
% 10 + '0';
6819 h
= (struct ppc_link_hash_entry
*)
6820 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6821 if (stub_sec
!= NULL
)
6824 && h
->elf
.root
.type
== bfd_link_hash_defined
6825 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6827 struct elf_link_hash_entry
*s
;
6829 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6830 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6833 if (s
->root
.type
== bfd_link_hash_new
6834 || (s
->root
.type
= bfd_link_hash_defined
6835 && s
->root
.u
.def
.section
== stub_sec
))
6837 s
->root
.type
= bfd_link_hash_defined
;
6838 s
->root
.u
.def
.section
= stub_sec
;
6839 s
->root
.u
.def
.value
= (stub_sec
->size
6840 + h
->elf
.root
.u
.def
.value
);
6843 s
->ref_regular_nonweak
= 1;
6844 s
->forced_local
= 1;
6846 s
->root
.linker_def
= 1;
6854 if (!h
->elf
.def_regular
)
6856 h
->elf
.root
.type
= bfd_link_hash_defined
;
6857 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6858 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6859 h
->elf
.type
= STT_FUNC
;
6860 h
->elf
.def_regular
= 1;
6862 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6864 if (htab
->sfpr
->contents
== NULL
)
6866 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6867 if (htab
->sfpr
->contents
== NULL
)
6874 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6876 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6878 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6879 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6887 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6889 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6894 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6896 p
= savegpr0 (abfd
, p
, r
);
6897 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6899 bfd_put_32 (abfd
, BLR
, p
);
6904 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6906 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6911 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6913 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6915 p
= restgpr0 (abfd
, p
, r
);
6916 bfd_put_32 (abfd
, MTLR_R0
, p
);
6920 p
= restgpr0 (abfd
, p
, 30);
6921 p
= restgpr0 (abfd
, p
, 31);
6923 bfd_put_32 (abfd
, BLR
, p
);
6928 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6930 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6935 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6937 p
= savegpr1 (abfd
, p
, r
);
6938 bfd_put_32 (abfd
, BLR
, p
);
6943 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6945 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6950 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6952 p
= restgpr1 (abfd
, p
, r
);
6953 bfd_put_32 (abfd
, BLR
, p
);
6958 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6960 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6965 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6967 p
= savefpr (abfd
, p
, r
);
6968 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6970 bfd_put_32 (abfd
, BLR
, p
);
6975 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6977 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6982 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6984 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6986 p
= restfpr (abfd
, p
, r
);
6987 bfd_put_32 (abfd
, MTLR_R0
, p
);
6991 p
= restfpr (abfd
, p
, 30);
6992 p
= restfpr (abfd
, p
, 31);
6994 bfd_put_32 (abfd
, BLR
, p
);
6999 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7001 p
= savefpr (abfd
, p
, r
);
7002 bfd_put_32 (abfd
, BLR
, p
);
7007 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7009 p
= restfpr (abfd
, p
, r
);
7010 bfd_put_32 (abfd
, BLR
, p
);
7015 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
7017 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7019 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
7024 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7026 p
= savevr (abfd
, p
, r
);
7027 bfd_put_32 (abfd
, BLR
, p
);
7032 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
7034 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7036 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
7041 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7043 p
= restvr (abfd
, p
, r
);
7044 bfd_put_32 (abfd
, BLR
, p
);
7048 /* Called via elf_link_hash_traverse to transfer dynamic linking
7049 information on function code symbol entries to their corresponding
7050 function descriptor symbol entries. */
7053 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
7055 struct bfd_link_info
*info
;
7056 struct ppc_link_hash_table
*htab
;
7057 struct ppc_link_hash_entry
*fh
;
7058 struct ppc_link_hash_entry
*fdh
;
7059 bfd_boolean force_local
;
7061 fh
= (struct ppc_link_hash_entry
*) h
;
7062 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
7068 if (fh
->elf
.root
.root
.string
[0] != '.'
7069 || fh
->elf
.root
.root
.string
[1] == '\0')
7073 htab
= ppc_hash_table (info
);
7077 /* Find the corresponding function descriptor symbol. */
7078 fdh
= lookup_fdh (fh
, htab
);
7080 /* Resolve undefined references to dot-symbols as the value
7081 in the function descriptor, if we have one in a regular object.
7082 This is to satisfy cases like ".quad .foo". Calls to functions
7083 in dynamic objects are handled elsewhere. */
7084 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7085 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7086 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7087 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7088 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7089 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7090 fdh
->elf
.root
.u
.def
.value
,
7091 &fh
->elf
.root
.u
.def
.section
,
7092 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7094 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7095 fh
->elf
.forced_local
= 1;
7096 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7097 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7100 if (!fh
->elf
.dynamic
)
7102 struct plt_entry
*ent
;
7104 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7105 if (ent
->plt
.refcount
> 0)
7111 /* Create a descriptor as undefined if necessary. */
7113 && !bfd_link_executable (info
)
7114 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7115 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7117 fdh
= make_fdh (info
, fh
);
7122 /* We can't support overriding of symbols on a fake descriptor. */
7125 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7126 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7127 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7129 /* Transfer dynamic linking information to the function descriptor. */
7132 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7133 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7134 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7135 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7136 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7137 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7138 || fh
->elf
.type
== STT_FUNC
7139 || fh
->elf
.type
== STT_GNU_IFUNC
);
7140 move_plt_plist (fh
, fdh
);
7142 if (!fdh
->elf
.forced_local
7143 && fh
->elf
.dynindx
!= -1)
7144 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7148 /* Now that the info is on the function descriptor, clear the
7149 function code sym info. Any function code syms for which we
7150 don't have a definition in a regular file, we force local.
7151 This prevents a shared library from exporting syms that have
7152 been imported from another library. Function code syms that
7153 are really in the library we must leave global to prevent the
7154 linker dragging in a definition from a static library. */
7155 force_local
= (!fh
->elf
.def_regular
7157 || !fdh
->elf
.def_regular
7158 || fdh
->elf
.forced_local
);
7159 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7164 static const struct sfpr_def_parms save_res_funcs
[] =
7166 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7167 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7168 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7169 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7170 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7171 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7172 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7173 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7174 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7175 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7176 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7177 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7180 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7181 this hook to a) provide some gcc support functions, and b) transfer
7182 dynamic linking information gathered so far on function code symbol
7183 entries, to their corresponding function descriptor symbol entries. */
7186 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7187 struct bfd_link_info
*info
)
7189 struct ppc_link_hash_table
*htab
;
7191 htab
= ppc_hash_table (info
);
7195 /* Provide any missing _save* and _rest* functions. */
7196 if (htab
->sfpr
!= NULL
)
7200 htab
->sfpr
->size
= 0;
7201 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7202 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7204 if (htab
->sfpr
->size
== 0)
7205 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7208 if (bfd_link_relocatable (info
))
7211 if (htab
->elf
.hgot
!= NULL
)
7213 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7214 /* Make .TOC. defined so as to prevent it being made dynamic.
7215 The wrong value here is fixed later in ppc64_elf_set_toc. */
7216 if (!htab
->elf
.hgot
->def_regular
7217 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7219 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7220 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7221 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7222 htab
->elf
.hgot
->def_regular
= 1;
7223 htab
->elf
.hgot
->root
.linker_def
= 1;
7225 htab
->elf
.hgot
->type
= STT_OBJECT
;
7226 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7230 if (htab
->need_func_desc_adj
)
7232 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7233 htab
->need_func_desc_adj
= 0;
7239 /* Return true if we have dynamic relocs against H that apply to
7240 read-only sections. */
7243 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7245 struct ppc_link_hash_entry
*eh
;
7246 struct elf_dyn_relocs
*p
;
7248 eh
= (struct ppc_link_hash_entry
*) h
;
7249 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7251 asection
*s
= p
->sec
->output_section
;
7253 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7259 /* Return true if we have dynamic relocs against H or any of its weak
7260 aliases, that apply to read-only sections. */
7263 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7265 struct ppc_link_hash_entry
*eh
;
7267 eh
= (struct ppc_link_hash_entry
*) h
;
7270 if (readonly_dynrelocs (&eh
->elf
))
7273 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7278 /* Return whether EH has pc-relative dynamic relocs. */
7281 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7283 struct elf_dyn_relocs
*p
;
7285 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7286 if (p
->pc_count
!= 0)
7291 /* Return true if a global entry stub will be created for H. Valid
7292 for ELFv2 before plt entries have been allocated. */
7295 global_entry_stub (struct elf_link_hash_entry
*h
)
7297 struct plt_entry
*pent
;
7299 if (!h
->pointer_equality_needed
7303 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7304 if (pent
->plt
.refcount
> 0
7305 && pent
->addend
== 0)
7311 /* Adjust a symbol defined by a dynamic object and referenced by a
7312 regular object. The current definition is in some section of the
7313 dynamic object, but we're not including those sections. We have to
7314 change the definition to something the rest of the link can
7318 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7319 struct elf_link_hash_entry
*h
)
7321 struct ppc_link_hash_table
*htab
;
7324 htab
= ppc_hash_table (info
);
7328 /* Deal with function syms. */
7329 if (h
->type
== STT_FUNC
7330 || h
->type
== STT_GNU_IFUNC
7333 /* Clear procedure linkage table information for any symbol that
7334 won't need a .plt entry. */
7335 struct plt_entry
*ent
;
7336 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7337 if (ent
->plt
.refcount
> 0)
7340 || (h
->type
!= STT_GNU_IFUNC
7341 && (SYMBOL_CALLS_LOCAL (info
, h
)
7342 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
7343 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7345 h
->plt
.plist
= NULL
;
7347 h
->pointer_equality_needed
= 0;
7349 else if (abiversion (info
->output_bfd
) >= 2)
7351 /* Taking a function's address in a read/write section
7352 doesn't require us to define the function symbol in the
7353 executable on a global entry stub. A dynamic reloc can
7354 be used instead. The reason we prefer a few more dynamic
7355 relocs is that calling via a global entry stub costs a
7356 few more instructions, and pointer_equality_needed causes
7357 extra work in ld.so when resolving these symbols. */
7358 if (global_entry_stub (h
)
7359 && !alias_readonly_dynrelocs (h
))
7361 h
->pointer_equality_needed
= 0;
7362 /* After adjust_dynamic_symbol, non_got_ref set in
7363 the non-pic case means that dyn_relocs for this
7364 symbol should be discarded. */
7368 /* If making a plt entry, then we don't need copy relocs. */
7373 h
->plt
.plist
= NULL
;
7375 /* If this is a weak symbol, and there is a real definition, the
7376 processor independent code will have arranged for us to see the
7377 real definition first, and we can just use the same value. */
7378 if (h
->u
.weakdef
!= NULL
)
7380 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7381 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7382 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7383 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7384 if (ELIMINATE_COPY_RELOCS
)
7385 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7389 /* If we are creating a shared library, we must presume that the
7390 only references to the symbol are via the global offset table.
7391 For such cases we need not do anything here; the relocations will
7392 be handled correctly by relocate_section. */
7393 if (bfd_link_pic (info
))
7396 /* If there are no references to this symbol that do not use the
7397 GOT, we don't need to generate a copy reloc. */
7398 if (!h
->non_got_ref
)
7401 /* Don't generate a copy reloc for symbols defined in the executable. */
7402 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7404 /* If -z nocopyreloc was given, don't generate them either. */
7405 || info
->nocopyreloc
7407 /* If we didn't find any dynamic relocs in read-only sections, then
7408 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7409 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7411 /* Protected variables do not work with .dynbss. The copy in
7412 .dynbss won't be used by the shared library with the protected
7413 definition for the variable. Text relocations are preferable
7414 to an incorrect program. */
7415 || h
->protected_def
)
7421 if (h
->plt
.plist
!= NULL
)
7423 /* We should never get here, but unfortunately there are versions
7424 of gcc out there that improperly (for this ABI) put initialized
7425 function pointers, vtable refs and suchlike in read-only
7426 sections. Allow them to proceed, but warn that this might
7427 break at runtime. */
7428 info
->callbacks
->einfo
7429 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7430 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7431 h
->root
.root
.string
);
7434 /* This is a reference to a symbol defined by a dynamic object which
7435 is not a function. */
7437 /* We must allocate the symbol in our .dynbss section, which will
7438 become part of the .bss section of the executable. There will be
7439 an entry for this symbol in the .dynsym section. The dynamic
7440 object will contain position independent code, so all references
7441 from the dynamic object to this symbol will go through the global
7442 offset table. The dynamic linker will use the .dynsym entry to
7443 determine the address it must put in the global offset table, so
7444 both the dynamic object and the regular object will refer to the
7445 same memory location for the variable. */
7447 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7448 to copy the initial value out of the dynamic object and into the
7449 runtime process image. We need to remember the offset into the
7450 .rela.bss section we are going to use. */
7451 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7453 s
= htab
->elf
.sdynrelro
;
7454 srel
= htab
->elf
.sreldynrelro
;
7458 s
= htab
->elf
.sdynbss
;
7459 srel
= htab
->elf
.srelbss
;
7461 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7463 srel
->size
+= sizeof (Elf64_External_Rela
);
7467 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7470 /* If given a function descriptor symbol, hide both the function code
7471 sym and the descriptor. */
7473 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7474 struct elf_link_hash_entry
*h
,
7475 bfd_boolean force_local
)
7477 struct ppc_link_hash_entry
*eh
;
7478 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7480 eh
= (struct ppc_link_hash_entry
*) h
;
7481 if (eh
->is_func_descriptor
)
7483 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7488 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7491 /* We aren't supposed to use alloca in BFD because on
7492 systems which do not have alloca the version in libiberty
7493 calls xmalloc, which might cause the program to crash
7494 when it runs out of memory. This function doesn't have a
7495 return status, so there's no way to gracefully return an
7496 error. So cheat. We know that string[-1] can be safely
7497 accessed; It's either a string in an ELF string table,
7498 or allocated in an objalloc structure. */
7500 p
= eh
->elf
.root
.root
.string
- 1;
7503 fh
= (struct ppc_link_hash_entry
*)
7504 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7507 /* Unfortunately, if it so happens that the string we were
7508 looking for was allocated immediately before this string,
7509 then we overwrote the string terminator. That's the only
7510 reason the lookup should fail. */
7513 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7514 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7516 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7517 fh
= (struct ppc_link_hash_entry
*)
7518 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7527 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7532 get_sym_h (struct elf_link_hash_entry
**hp
,
7533 Elf_Internal_Sym
**symp
,
7535 unsigned char **tls_maskp
,
7536 Elf_Internal_Sym
**locsymsp
,
7537 unsigned long r_symndx
,
7540 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7542 if (r_symndx
>= symtab_hdr
->sh_info
)
7544 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7545 struct elf_link_hash_entry
*h
;
7547 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7548 h
= elf_follow_link (h
);
7556 if (symsecp
!= NULL
)
7558 asection
*symsec
= NULL
;
7559 if (h
->root
.type
== bfd_link_hash_defined
7560 || h
->root
.type
== bfd_link_hash_defweak
)
7561 symsec
= h
->root
.u
.def
.section
;
7565 if (tls_maskp
!= NULL
)
7567 struct ppc_link_hash_entry
*eh
;
7569 eh
= (struct ppc_link_hash_entry
*) h
;
7570 *tls_maskp
= &eh
->tls_mask
;
7575 Elf_Internal_Sym
*sym
;
7576 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7578 if (locsyms
== NULL
)
7580 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7581 if (locsyms
== NULL
)
7582 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7583 symtab_hdr
->sh_info
,
7584 0, NULL
, NULL
, NULL
);
7585 if (locsyms
== NULL
)
7587 *locsymsp
= locsyms
;
7589 sym
= locsyms
+ r_symndx
;
7597 if (symsecp
!= NULL
)
7598 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7600 if (tls_maskp
!= NULL
)
7602 struct got_entry
**lgot_ents
;
7603 unsigned char *tls_mask
;
7606 lgot_ents
= elf_local_got_ents (ibfd
);
7607 if (lgot_ents
!= NULL
)
7609 struct plt_entry
**local_plt
= (struct plt_entry
**)
7610 (lgot_ents
+ symtab_hdr
->sh_info
);
7611 unsigned char *lgot_masks
= (unsigned char *)
7612 (local_plt
+ symtab_hdr
->sh_info
);
7613 tls_mask
= &lgot_masks
[r_symndx
];
7615 *tls_maskp
= tls_mask
;
7621 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7622 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7623 type suitable for optimization, and 1 otherwise. */
7626 get_tls_mask (unsigned char **tls_maskp
,
7627 unsigned long *toc_symndx
,
7628 bfd_vma
*toc_addend
,
7629 Elf_Internal_Sym
**locsymsp
,
7630 const Elf_Internal_Rela
*rel
,
7633 unsigned long r_symndx
;
7635 struct elf_link_hash_entry
*h
;
7636 Elf_Internal_Sym
*sym
;
7640 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7641 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7644 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7646 || ppc64_elf_section_data (sec
) == NULL
7647 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7650 /* Look inside a TOC section too. */
7653 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7654 off
= h
->root
.u
.def
.value
;
7657 off
= sym
->st_value
;
7658 off
+= rel
->r_addend
;
7659 BFD_ASSERT (off
% 8 == 0);
7660 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7661 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7662 if (toc_symndx
!= NULL
)
7663 *toc_symndx
= r_symndx
;
7664 if (toc_addend
!= NULL
)
7665 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7666 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7668 if ((h
== NULL
|| is_static_defined (h
))
7669 && (next_r
== -1 || next_r
== -2))
7674 /* Find (or create) an entry in the tocsave hash table. */
7676 static struct tocsave_entry
*
7677 tocsave_find (struct ppc_link_hash_table
*htab
,
7678 enum insert_option insert
,
7679 Elf_Internal_Sym
**local_syms
,
7680 const Elf_Internal_Rela
*irela
,
7683 unsigned long r_indx
;
7684 struct elf_link_hash_entry
*h
;
7685 Elf_Internal_Sym
*sym
;
7686 struct tocsave_entry ent
, *p
;
7688 struct tocsave_entry
**slot
;
7690 r_indx
= ELF64_R_SYM (irela
->r_info
);
7691 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7693 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7696 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7701 ent
.offset
= h
->root
.u
.def
.value
;
7703 ent
.offset
= sym
->st_value
;
7704 ent
.offset
+= irela
->r_addend
;
7706 hash
= tocsave_htab_hash (&ent
);
7707 slot
= ((struct tocsave_entry
**)
7708 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7714 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7723 /* Adjust all global syms defined in opd sections. In gcc generated
7724 code for the old ABI, these will already have been done. */
7727 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7729 struct ppc_link_hash_entry
*eh
;
7731 struct _opd_sec_data
*opd
;
7733 if (h
->root
.type
== bfd_link_hash_indirect
)
7736 if (h
->root
.type
!= bfd_link_hash_defined
7737 && h
->root
.type
!= bfd_link_hash_defweak
)
7740 eh
= (struct ppc_link_hash_entry
*) h
;
7741 if (eh
->adjust_done
)
7744 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7745 opd
= get_opd_info (sym_sec
);
7746 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7748 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7751 /* This entry has been deleted. */
7752 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7755 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7756 if (discarded_section (dsec
))
7758 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7762 eh
->elf
.root
.u
.def
.value
= 0;
7763 eh
->elf
.root
.u
.def
.section
= dsec
;
7766 eh
->elf
.root
.u
.def
.value
+= adjust
;
7767 eh
->adjust_done
= 1;
7772 /* Handles decrementing dynamic reloc counts for the reloc specified by
7773 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7774 have already been determined. */
7777 dec_dynrel_count (bfd_vma r_info
,
7779 struct bfd_link_info
*info
,
7780 Elf_Internal_Sym
**local_syms
,
7781 struct elf_link_hash_entry
*h
,
7782 Elf_Internal_Sym
*sym
)
7784 enum elf_ppc64_reloc_type r_type
;
7785 asection
*sym_sec
= NULL
;
7787 /* Can this reloc be dynamic? This switch, and later tests here
7788 should be kept in sync with the code in check_relocs. */
7789 r_type
= ELF64_R_TYPE (r_info
);
7795 case R_PPC64_TPREL16
:
7796 case R_PPC64_TPREL16_LO
:
7797 case R_PPC64_TPREL16_HI
:
7798 case R_PPC64_TPREL16_HA
:
7799 case R_PPC64_TPREL16_DS
:
7800 case R_PPC64_TPREL16_LO_DS
:
7801 case R_PPC64_TPREL16_HIGH
:
7802 case R_PPC64_TPREL16_HIGHA
:
7803 case R_PPC64_TPREL16_HIGHER
:
7804 case R_PPC64_TPREL16_HIGHERA
:
7805 case R_PPC64_TPREL16_HIGHEST
:
7806 case R_PPC64_TPREL16_HIGHESTA
:
7807 case R_PPC64_TPREL64
:
7808 case R_PPC64_DTPMOD64
:
7809 case R_PPC64_DTPREL64
:
7810 case R_PPC64_ADDR64
:
7814 case R_PPC64_ADDR14
:
7815 case R_PPC64_ADDR14_BRNTAKEN
:
7816 case R_PPC64_ADDR14_BRTAKEN
:
7817 case R_PPC64_ADDR16
:
7818 case R_PPC64_ADDR16_DS
:
7819 case R_PPC64_ADDR16_HA
:
7820 case R_PPC64_ADDR16_HI
:
7821 case R_PPC64_ADDR16_HIGH
:
7822 case R_PPC64_ADDR16_HIGHA
:
7823 case R_PPC64_ADDR16_HIGHER
:
7824 case R_PPC64_ADDR16_HIGHERA
:
7825 case R_PPC64_ADDR16_HIGHEST
:
7826 case R_PPC64_ADDR16_HIGHESTA
:
7827 case R_PPC64_ADDR16_LO
:
7828 case R_PPC64_ADDR16_LO_DS
:
7829 case R_PPC64_ADDR24
:
7830 case R_PPC64_ADDR32
:
7831 case R_PPC64_UADDR16
:
7832 case R_PPC64_UADDR32
:
7833 case R_PPC64_UADDR64
:
7838 if (local_syms
!= NULL
)
7840 unsigned long r_symndx
;
7841 bfd
*ibfd
= sec
->owner
;
7843 r_symndx
= ELF64_R_SYM (r_info
);
7844 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7848 if ((bfd_link_pic (info
)
7849 && (must_be_dyn_reloc (info
, r_type
)
7851 && (!SYMBOLIC_BIND (info
, h
)
7852 || h
->root
.type
== bfd_link_hash_defweak
7853 || !h
->def_regular
))))
7854 || (ELIMINATE_COPY_RELOCS
7855 && !bfd_link_pic (info
)
7857 && (h
->root
.type
== bfd_link_hash_defweak
7858 || !h
->def_regular
)))
7865 struct elf_dyn_relocs
*p
;
7866 struct elf_dyn_relocs
**pp
;
7867 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7869 /* elf_gc_sweep may have already removed all dyn relocs associated
7870 with local syms for a given section. Also, symbol flags are
7871 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7872 report a dynreloc miscount. */
7873 if (*pp
== NULL
&& info
->gc_sections
)
7876 while ((p
= *pp
) != NULL
)
7880 if (!must_be_dyn_reloc (info
, r_type
))
7892 struct ppc_dyn_relocs
*p
;
7893 struct ppc_dyn_relocs
**pp
;
7895 bfd_boolean is_ifunc
;
7897 if (local_syms
== NULL
)
7898 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7899 if (sym_sec
== NULL
)
7902 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7903 pp
= (struct ppc_dyn_relocs
**) vpp
;
7905 if (*pp
== NULL
&& info
->gc_sections
)
7908 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7909 while ((p
= *pp
) != NULL
)
7911 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7922 /* xgettext:c-format */
7923 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7925 bfd_set_error (bfd_error_bad_value
);
7929 /* Remove unused Official Procedure Descriptor entries. Currently we
7930 only remove those associated with functions in discarded link-once
7931 sections, or weakly defined functions that have been overridden. It
7932 would be possible to remove many more entries for statically linked
7936 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7939 bfd_boolean some_edited
= FALSE
;
7940 asection
*need_pad
= NULL
;
7941 struct ppc_link_hash_table
*htab
;
7943 htab
= ppc_hash_table (info
);
7947 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7950 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7951 Elf_Internal_Shdr
*symtab_hdr
;
7952 Elf_Internal_Sym
*local_syms
;
7953 struct _opd_sec_data
*opd
;
7954 bfd_boolean need_edit
, add_aux_fields
, broken
;
7955 bfd_size_type cnt_16b
= 0;
7957 if (!is_ppc64_elf (ibfd
))
7960 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7961 if (sec
== NULL
|| sec
->size
== 0)
7964 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7967 if (sec
->output_section
== bfd_abs_section_ptr
)
7970 /* Look through the section relocs. */
7971 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7975 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7977 /* Read the relocations. */
7978 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7980 if (relstart
== NULL
)
7983 /* First run through the relocs to check they are sane, and to
7984 determine whether we need to edit this opd section. */
7988 relend
= relstart
+ sec
->reloc_count
;
7989 for (rel
= relstart
; rel
< relend
; )
7991 enum elf_ppc64_reloc_type r_type
;
7992 unsigned long r_symndx
;
7994 struct elf_link_hash_entry
*h
;
7995 Elf_Internal_Sym
*sym
;
7998 /* .opd contains an array of 16 or 24 byte entries. We're
7999 only interested in the reloc pointing to a function entry
8001 offset
= rel
->r_offset
;
8002 if (rel
+ 1 == relend
8003 || rel
[1].r_offset
!= offset
+ 8)
8005 /* If someone messes with .opd alignment then after a
8006 "ld -r" we might have padding in the middle of .opd.
8007 Also, there's nothing to prevent someone putting
8008 something silly in .opd with the assembler. No .opd
8009 optimization for them! */
8012 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
8017 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
8018 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
8021 /* xgettext:c-format */
8022 (_("%B: unexpected reloc type %u in .opd section"),
8028 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8029 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8033 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
8035 const char *sym_name
;
8037 sym_name
= h
->root
.root
.string
;
8039 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8043 /* xgettext:c-format */
8044 (_("%B: undefined sym `%s' in .opd section"),
8050 /* opd entries are always for functions defined in the
8051 current input bfd. If the symbol isn't defined in the
8052 input bfd, then we won't be using the function in this
8053 bfd; It must be defined in a linkonce section in another
8054 bfd, or is weak. It's also possible that we are
8055 discarding the function due to a linker script /DISCARD/,
8056 which we test for via the output_section. */
8057 if (sym_sec
->owner
!= ibfd
8058 || sym_sec
->output_section
== bfd_abs_section_ptr
)
8062 if (rel
+ 1 == relend
8063 || (rel
+ 2 < relend
8064 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
8069 if (sec
->size
== offset
+ 24)
8074 if (sec
->size
== offset
+ 16)
8081 else if (rel
+ 1 < relend
8082 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8083 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8085 if (rel
[0].r_offset
== offset
+ 16)
8087 else if (rel
[0].r_offset
!= offset
+ 24)
8094 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8096 if (!broken
&& (need_edit
|| add_aux_fields
))
8098 Elf_Internal_Rela
*write_rel
;
8099 Elf_Internal_Shdr
*rel_hdr
;
8100 bfd_byte
*rptr
, *wptr
;
8101 bfd_byte
*new_contents
;
8104 new_contents
= NULL
;
8105 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8106 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8107 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8108 if (opd
->adjust
== NULL
)
8110 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8112 /* This seems a waste of time as input .opd sections are all
8113 zeros as generated by gcc, but I suppose there's no reason
8114 this will always be so. We might start putting something in
8115 the third word of .opd entries. */
8116 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8119 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8124 if (local_syms
!= NULL
8125 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8127 if (elf_section_data (sec
)->relocs
!= relstart
)
8131 sec
->contents
= loc
;
8132 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8135 elf_section_data (sec
)->relocs
= relstart
;
8137 new_contents
= sec
->contents
;
8140 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8141 if (new_contents
== NULL
)
8145 wptr
= new_contents
;
8146 rptr
= sec
->contents
;
8147 write_rel
= relstart
;
8148 for (rel
= relstart
; rel
< relend
; )
8150 unsigned long r_symndx
;
8152 struct elf_link_hash_entry
*h
;
8153 struct ppc_link_hash_entry
*fdh
= NULL
;
8154 Elf_Internal_Sym
*sym
;
8156 Elf_Internal_Rela
*next_rel
;
8159 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8160 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8165 if (next_rel
+ 1 == relend
8166 || (next_rel
+ 2 < relend
8167 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8170 /* See if the .opd entry is full 24 byte or
8171 16 byte (with fd_aux entry overlapped with next
8174 if (next_rel
== relend
)
8176 if (sec
->size
== rel
->r_offset
+ 16)
8179 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8183 && h
->root
.root
.string
[0] == '.')
8185 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8188 fdh
= ppc_follow_link (fdh
);
8189 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8190 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8195 skip
= (sym_sec
->owner
!= ibfd
8196 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8199 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8201 /* Arrange for the function descriptor sym
8203 fdh
->elf
.root
.u
.def
.value
= 0;
8204 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8206 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8208 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8213 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8217 if (++rel
== next_rel
)
8220 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8221 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8228 /* We'll be keeping this opd entry. */
8233 /* Redefine the function descriptor symbol to
8234 this location in the opd section. It is
8235 necessary to update the value here rather
8236 than using an array of adjustments as we do
8237 for local symbols, because various places
8238 in the generic ELF code use the value
8239 stored in u.def.value. */
8240 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8241 fdh
->adjust_done
= 1;
8244 /* Local syms are a bit tricky. We could
8245 tweak them as they can be cached, but
8246 we'd need to look through the local syms
8247 for the function descriptor sym which we
8248 don't have at the moment. So keep an
8249 array of adjustments. */
8250 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8251 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8254 memcpy (wptr
, rptr
, opd_ent_size
);
8255 wptr
+= opd_ent_size
;
8256 if (add_aux_fields
&& opd_ent_size
== 16)
8258 memset (wptr
, '\0', 8);
8262 /* We need to adjust any reloc offsets to point to the
8264 for ( ; rel
!= next_rel
; ++rel
)
8266 rel
->r_offset
+= adjust
;
8267 if (write_rel
!= rel
)
8268 memcpy (write_rel
, rel
, sizeof (*rel
));
8273 rptr
+= opd_ent_size
;
8276 sec
->size
= wptr
- new_contents
;
8277 sec
->reloc_count
= write_rel
- relstart
;
8280 free (sec
->contents
);
8281 sec
->contents
= new_contents
;
8284 /* Fudge the header size too, as this is used later in
8285 elf_bfd_final_link if we are emitting relocs. */
8286 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8287 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8290 else if (elf_section_data (sec
)->relocs
!= relstart
)
8293 if (local_syms
!= NULL
8294 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8296 if (!info
->keep_memory
)
8299 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8304 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8306 /* If we are doing a final link and the last .opd entry is just 16 byte
8307 long, add a 8 byte padding after it. */
8308 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8312 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8314 BFD_ASSERT (need_pad
->size
> 0);
8316 p
= bfd_malloc (need_pad
->size
+ 8);
8320 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8321 p
, 0, need_pad
->size
))
8324 need_pad
->contents
= p
;
8325 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8329 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8333 need_pad
->contents
= p
;
8336 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8337 need_pad
->size
+= 8;
8343 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8346 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8348 struct ppc_link_hash_table
*htab
;
8350 htab
= ppc_hash_table (info
);
8354 if (abiversion (info
->output_bfd
) == 1)
8357 if (htab
->params
->no_multi_toc
)
8358 htab
->do_multi_toc
= 0;
8359 else if (!htab
->do_multi_toc
)
8360 htab
->params
->no_multi_toc
= 1;
8362 /* Default to --no-plt-localentry, as this option can cause problems
8363 with symbol interposition. For example, glibc libpthread.so and
8364 libc.so duplicate many pthread symbols, with a fallback
8365 implementation in libc.so. In some cases the fallback does more
8366 work than the pthread implementation. __pthread_condattr_destroy
8367 is one such symbol: the libpthread.so implementation is
8368 localentry:0 while the libc.so implementation is localentry:8.
8369 An app that "cleverly" uses dlopen to only load necessary
8370 libraries at runtime may omit loading libpthread.so when not
8371 running multi-threaded, which then results in the libc.so
8372 fallback symbols being used and ld.so complaining. Now there
8373 are workarounds in ld (see non_zero_localentry) to detect the
8374 pthread situation, but that may not be the only case where
8375 --plt-localentry can cause trouble. */
8376 if (htab
->params
->plt_localentry0
< 0)
8377 htab
->params
->plt_localentry0
= 0;
8378 if (htab
->params
->plt_localentry0
8379 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8380 FALSE
, FALSE
, FALSE
) == NULL
)
8381 info
->callbacks
->einfo
8382 (_("%P: warning: --plt-localentry is especially dangerous without "
8383 "ld.so support to detect ABI violations.\n"));
8385 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8386 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8387 FALSE
, FALSE
, TRUE
));
8388 /* Move dynamic linking info to the function descriptor sym. */
8389 if (htab
->tls_get_addr
!= NULL
)
8390 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8391 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8392 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8393 FALSE
, FALSE
, TRUE
));
8394 if (htab
->params
->tls_get_addr_opt
)
8396 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8398 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8399 FALSE
, FALSE
, TRUE
);
8401 func_desc_adjust (opt
, info
);
8402 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8403 FALSE
, FALSE
, TRUE
);
8405 && (opt_fd
->root
.type
== bfd_link_hash_defined
8406 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8408 /* If glibc supports an optimized __tls_get_addr call stub,
8409 signalled by the presence of __tls_get_addr_opt, and we'll
8410 be calling __tls_get_addr via a plt call stub, then
8411 make __tls_get_addr point to __tls_get_addr_opt. */
8412 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8413 if (htab
->elf
.dynamic_sections_created
8415 && (tga_fd
->type
== STT_FUNC
8416 || tga_fd
->needs_plt
)
8417 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8418 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8420 struct plt_entry
*ent
;
8422 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8423 if (ent
->plt
.refcount
> 0)
8427 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8428 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8429 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8431 if (opt_fd
->dynindx
!= -1)
8433 /* Use __tls_get_addr_opt in dynamic relocations. */
8434 opt_fd
->dynindx
= -1;
8435 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8436 opt_fd
->dynstr_index
);
8437 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8440 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8441 tga
= &htab
->tls_get_addr
->elf
;
8442 if (opt
!= NULL
&& tga
!= NULL
)
8444 tga
->root
.type
= bfd_link_hash_indirect
;
8445 tga
->root
.u
.i
.link
= &opt
->root
;
8446 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8448 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8450 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8452 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8453 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8454 if (htab
->tls_get_addr
!= NULL
)
8456 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8457 htab
->tls_get_addr
->is_func
= 1;
8462 else if (htab
->params
->tls_get_addr_opt
< 0)
8463 htab
->params
->tls_get_addr_opt
= 0;
8465 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8468 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8472 branch_reloc_hash_match (const bfd
*ibfd
,
8473 const Elf_Internal_Rela
*rel
,
8474 const struct ppc_link_hash_entry
*hash1
,
8475 const struct ppc_link_hash_entry
*hash2
)
8477 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8478 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8479 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8481 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8483 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8484 struct elf_link_hash_entry
*h
;
8486 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8487 h
= elf_follow_link (h
);
8488 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8494 /* Run through all the TLS relocs looking for optimization
8495 opportunities. The linker has been hacked (see ppc64elf.em) to do
8496 a preliminary section layout so that we know the TLS segment
8497 offsets. We can't optimize earlier because some optimizations need
8498 to know the tp offset, and we need to optimize before allocating
8499 dynamic relocations. */
8502 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8506 struct ppc_link_hash_table
*htab
;
8507 unsigned char *toc_ref
;
8510 if (!bfd_link_executable (info
))
8513 htab
= ppc_hash_table (info
);
8517 /* Make two passes over the relocs. On the first pass, mark toc
8518 entries involved with tls relocs, and check that tls relocs
8519 involved in setting up a tls_get_addr call are indeed followed by
8520 such a call. If they are not, we can't do any tls optimization.
8521 On the second pass twiddle tls_mask flags to notify
8522 relocate_section that optimization can be done, and adjust got
8523 and plt refcounts. */
8525 for (pass
= 0; pass
< 2; ++pass
)
8526 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8528 Elf_Internal_Sym
*locsyms
= NULL
;
8529 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8531 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8532 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8534 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8535 bfd_boolean found_tls_get_addr_arg
= 0;
8537 /* Read the relocations. */
8538 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8540 if (relstart
== NULL
)
8546 relend
= relstart
+ sec
->reloc_count
;
8547 for (rel
= relstart
; rel
< relend
; rel
++)
8549 enum elf_ppc64_reloc_type r_type
;
8550 unsigned long r_symndx
;
8551 struct elf_link_hash_entry
*h
;
8552 Elf_Internal_Sym
*sym
;
8554 unsigned char *tls_mask
;
8555 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8557 bfd_boolean ok_tprel
, is_local
;
8558 long toc_ref_index
= 0;
8559 int expecting_tls_get_addr
= 0;
8560 bfd_boolean ret
= FALSE
;
8562 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8563 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8567 if (elf_section_data (sec
)->relocs
!= relstart
)
8569 if (toc_ref
!= NULL
)
8572 && (elf_symtab_hdr (ibfd
).contents
8573 != (unsigned char *) locsyms
))
8580 if (h
->root
.type
== bfd_link_hash_defined
8581 || h
->root
.type
== bfd_link_hash_defweak
)
8582 value
= h
->root
.u
.def
.value
;
8583 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8587 found_tls_get_addr_arg
= 0;
8592 /* Symbols referenced by TLS relocs must be of type
8593 STT_TLS. So no need for .opd local sym adjust. */
8594 value
= sym
->st_value
;
8603 && h
->root
.type
== bfd_link_hash_undefweak
)
8605 else if (sym_sec
!= NULL
8606 && sym_sec
->output_section
!= NULL
)
8608 value
+= sym_sec
->output_offset
;
8609 value
+= sym_sec
->output_section
->vma
;
8610 value
-= htab
->elf
.tls_sec
->vma
;
8611 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8612 < (bfd_vma
) 1 << 32);
8616 r_type
= ELF64_R_TYPE (rel
->r_info
);
8617 /* If this section has old-style __tls_get_addr calls
8618 without marker relocs, then check that each
8619 __tls_get_addr call reloc is preceded by a reloc
8620 that conceivably belongs to the __tls_get_addr arg
8621 setup insn. If we don't find matching arg setup
8622 relocs, don't do any tls optimization. */
8624 && sec
->has_tls_get_addr_call
8626 && (h
== &htab
->tls_get_addr
->elf
8627 || h
== &htab
->tls_get_addr_fd
->elf
)
8628 && !found_tls_get_addr_arg
8629 && is_branch_reloc (r_type
))
8631 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8632 "TLS optimization disabled\n"),
8633 ibfd
, sec
, rel
->r_offset
);
8638 found_tls_get_addr_arg
= 0;
8641 case R_PPC64_GOT_TLSLD16
:
8642 case R_PPC64_GOT_TLSLD16_LO
:
8643 expecting_tls_get_addr
= 1;
8644 found_tls_get_addr_arg
= 1;
8647 case R_PPC64_GOT_TLSLD16_HI
:
8648 case R_PPC64_GOT_TLSLD16_HA
:
8649 /* These relocs should never be against a symbol
8650 defined in a shared lib. Leave them alone if
8651 that turns out to be the case. */
8658 tls_type
= TLS_TLS
| TLS_LD
;
8661 case R_PPC64_GOT_TLSGD16
:
8662 case R_PPC64_GOT_TLSGD16_LO
:
8663 expecting_tls_get_addr
= 1;
8664 found_tls_get_addr_arg
= 1;
8667 case R_PPC64_GOT_TLSGD16_HI
:
8668 case R_PPC64_GOT_TLSGD16_HA
:
8674 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8676 tls_type
= TLS_TLS
| TLS_GD
;
8679 case R_PPC64_GOT_TPREL16_DS
:
8680 case R_PPC64_GOT_TPREL16_LO_DS
:
8681 case R_PPC64_GOT_TPREL16_HI
:
8682 case R_PPC64_GOT_TPREL16_HA
:
8687 tls_clear
= TLS_TPREL
;
8688 tls_type
= TLS_TLS
| TLS_TPREL
;
8695 found_tls_get_addr_arg
= 1;
8700 case R_PPC64_TOC16_LO
:
8701 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8704 /* Mark this toc entry as referenced by a TLS
8705 code sequence. We can do that now in the
8706 case of R_PPC64_TLS, and after checking for
8707 tls_get_addr for the TOC16 relocs. */
8708 if (toc_ref
== NULL
)
8709 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8710 if (toc_ref
== NULL
)
8714 value
= h
->root
.u
.def
.value
;
8716 value
= sym
->st_value
;
8717 value
+= rel
->r_addend
;
8720 BFD_ASSERT (value
< toc
->size
8721 && toc
->output_offset
% 8 == 0);
8722 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8723 if (r_type
== R_PPC64_TLS
8724 || r_type
== R_PPC64_TLSGD
8725 || r_type
== R_PPC64_TLSLD
)
8727 toc_ref
[toc_ref_index
] = 1;
8731 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8736 expecting_tls_get_addr
= 2;
8739 case R_PPC64_TPREL64
:
8743 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8748 tls_set
= TLS_EXPLICIT
;
8749 tls_clear
= TLS_TPREL
;
8754 case R_PPC64_DTPMOD64
:
8758 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8760 if (rel
+ 1 < relend
8762 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8763 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8767 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8770 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8779 tls_set
= TLS_EXPLICIT
;
8790 if (!expecting_tls_get_addr
8791 || !sec
->has_tls_get_addr_call
)
8794 if (rel
+ 1 < relend
8795 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8797 htab
->tls_get_addr_fd
))
8799 if (expecting_tls_get_addr
== 2)
8801 /* Check for toc tls entries. */
8802 unsigned char *toc_tls
;
8805 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8810 if (toc_tls
!= NULL
)
8812 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8813 found_tls_get_addr_arg
= 1;
8815 toc_ref
[toc_ref_index
] = 1;
8821 if (expecting_tls_get_addr
!= 1)
8824 /* Uh oh, we didn't find the expected call. We
8825 could just mark this symbol to exclude it
8826 from tls optimization but it's safer to skip
8827 the entire optimization. */
8828 /* xgettext:c-format */
8829 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8830 "TLS optimization disabled\n"),
8831 ibfd
, sec
, rel
->r_offset
);
8836 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8838 struct plt_entry
*ent
;
8839 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8842 if (ent
->addend
== 0)
8844 if (ent
->plt
.refcount
> 0)
8846 ent
->plt
.refcount
-= 1;
8847 expecting_tls_get_addr
= 0;
8853 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8855 struct plt_entry
*ent
;
8856 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8859 if (ent
->addend
== 0)
8861 if (ent
->plt
.refcount
> 0)
8862 ent
->plt
.refcount
-= 1;
8870 if ((tls_set
& TLS_EXPLICIT
) == 0)
8872 struct got_entry
*ent
;
8874 /* Adjust got entry for this reloc. */
8878 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8880 for (; ent
!= NULL
; ent
= ent
->next
)
8881 if (ent
->addend
== rel
->r_addend
8882 && ent
->owner
== ibfd
8883 && ent
->tls_type
== tls_type
)
8890 /* We managed to get rid of a got entry. */
8891 if (ent
->got
.refcount
> 0)
8892 ent
->got
.refcount
-= 1;
8897 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8898 we'll lose one or two dyn relocs. */
8899 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8903 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8905 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8911 *tls_mask
|= tls_set
;
8912 *tls_mask
&= ~tls_clear
;
8915 if (elf_section_data (sec
)->relocs
!= relstart
)
8920 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8922 if (!info
->keep_memory
)
8925 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8929 if (toc_ref
!= NULL
)
8931 htab
->do_tls_opt
= 1;
8935 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8936 the values of any global symbols in a toc section that has been
8937 edited. Globals in toc sections should be a rarity, so this function
8938 sets a flag if any are found in toc sections other than the one just
8939 edited, so that further hash table traversals can be avoided. */
8941 struct adjust_toc_info
8944 unsigned long *skip
;
8945 bfd_boolean global_toc_syms
;
8948 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8951 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8953 struct ppc_link_hash_entry
*eh
;
8954 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8957 if (h
->root
.type
!= bfd_link_hash_defined
8958 && h
->root
.type
!= bfd_link_hash_defweak
)
8961 eh
= (struct ppc_link_hash_entry
*) h
;
8962 if (eh
->adjust_done
)
8965 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8967 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8968 i
= toc_inf
->toc
->rawsize
>> 3;
8970 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8972 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8975 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8978 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8979 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8982 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8983 eh
->adjust_done
= 1;
8985 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8986 toc_inf
->global_toc_syms
= TRUE
;
8991 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8992 on a _LO variety toc/got reloc. */
8995 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8997 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8998 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8999 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
9000 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
9001 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
9002 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
9003 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
9004 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
9005 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
9006 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
9007 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
9008 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
9009 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
9010 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
9011 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
9012 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
9013 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9014 /* Exclude lfqu by testing reloc. If relocs are ever
9015 defined for the reduced D field in psq_lu then those
9016 will need testing too. */
9017 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9018 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
9020 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
9021 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9022 /* Exclude stfqu. psq_stu as above for psq_lu. */
9023 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9024 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
9025 && (insn
& 1) == 0));
9028 /* Examine all relocs referencing .toc sections in order to remove
9029 unused .toc entries. */
9032 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
9035 struct adjust_toc_info toc_inf
;
9036 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9038 htab
->do_toc_opt
= 1;
9039 toc_inf
.global_toc_syms
= TRUE
;
9040 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9042 asection
*toc
, *sec
;
9043 Elf_Internal_Shdr
*symtab_hdr
;
9044 Elf_Internal_Sym
*local_syms
;
9045 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
9046 unsigned long *skip
, *drop
;
9047 unsigned char *used
;
9048 unsigned char *keep
, last
, some_unused
;
9050 if (!is_ppc64_elf (ibfd
))
9053 toc
= bfd_get_section_by_name (ibfd
, ".toc");
9056 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
9057 || discarded_section (toc
))
9062 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9064 /* Look at sections dropped from the final link. */
9067 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9069 if (sec
->reloc_count
== 0
9070 || !discarded_section (sec
)
9071 || get_opd_info (sec
)
9072 || (sec
->flags
& SEC_ALLOC
) == 0
9073 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9076 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
9077 if (relstart
== NULL
)
9080 /* Run through the relocs to see which toc entries might be
9082 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9084 enum elf_ppc64_reloc_type r_type
;
9085 unsigned long r_symndx
;
9087 struct elf_link_hash_entry
*h
;
9088 Elf_Internal_Sym
*sym
;
9091 r_type
= ELF64_R_TYPE (rel
->r_info
);
9098 case R_PPC64_TOC16_LO
:
9099 case R_PPC64_TOC16_HI
:
9100 case R_PPC64_TOC16_HA
:
9101 case R_PPC64_TOC16_DS
:
9102 case R_PPC64_TOC16_LO_DS
:
9106 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9107 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9115 val
= h
->root
.u
.def
.value
;
9117 val
= sym
->st_value
;
9118 val
+= rel
->r_addend
;
9120 if (val
>= toc
->size
)
9123 /* Anything in the toc ought to be aligned to 8 bytes.
9124 If not, don't mark as unused. */
9130 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9135 skip
[val
>> 3] = ref_from_discarded
;
9138 if (elf_section_data (sec
)->relocs
!= relstart
)
9142 /* For largetoc loads of address constants, we can convert
9143 . addis rx,2,addr@got@ha
9144 . ld ry,addr@got@l(rx)
9146 . addis rx,2,addr@toc@ha
9147 . addi ry,rx,addr@toc@l
9148 when addr is within 2G of the toc pointer. This then means
9149 that the word storing "addr" in the toc is no longer needed. */
9151 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9152 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9153 && toc
->reloc_count
!= 0)
9155 /* Read toc relocs. */
9156 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9158 if (toc_relocs
== NULL
)
9161 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9163 enum elf_ppc64_reloc_type r_type
;
9164 unsigned long r_symndx
;
9166 struct elf_link_hash_entry
*h
;
9167 Elf_Internal_Sym
*sym
;
9170 r_type
= ELF64_R_TYPE (rel
->r_info
);
9171 if (r_type
!= R_PPC64_ADDR64
)
9174 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9175 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9180 || sym_sec
->output_section
== NULL
9181 || discarded_section (sym_sec
))
9184 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9189 if (h
->type
== STT_GNU_IFUNC
)
9191 val
= h
->root
.u
.def
.value
;
9195 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9197 val
= sym
->st_value
;
9199 val
+= rel
->r_addend
;
9200 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9202 /* We don't yet know the exact toc pointer value, but we
9203 know it will be somewhere in the toc section. Don't
9204 optimize if the difference from any possible toc
9205 pointer is outside [ff..f80008000, 7fff7fff]. */
9206 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9207 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9210 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9211 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9216 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9221 skip
[rel
->r_offset
>> 3]
9222 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9229 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9233 if (local_syms
!= NULL
9234 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9238 && elf_section_data (sec
)->relocs
!= relstart
)
9240 if (toc_relocs
!= NULL
9241 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9248 /* Now check all kept sections that might reference the toc.
9249 Check the toc itself last. */
9250 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9253 sec
= (sec
== toc
? NULL
9254 : sec
->next
== NULL
? toc
9255 : sec
->next
== toc
&& toc
->next
? toc
->next
9260 if (sec
->reloc_count
== 0
9261 || discarded_section (sec
)
9262 || get_opd_info (sec
)
9263 || (sec
->flags
& SEC_ALLOC
) == 0
9264 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9267 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9269 if (relstart
== NULL
)
9275 /* Mark toc entries referenced as used. */
9279 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9281 enum elf_ppc64_reloc_type r_type
;
9282 unsigned long r_symndx
;
9284 struct elf_link_hash_entry
*h
;
9285 Elf_Internal_Sym
*sym
;
9287 enum {no_check
, check_lo
, check_ha
} insn_check
;
9289 r_type
= ELF64_R_TYPE (rel
->r_info
);
9293 insn_check
= no_check
;
9296 case R_PPC64_GOT_TLSLD16_HA
:
9297 case R_PPC64_GOT_TLSGD16_HA
:
9298 case R_PPC64_GOT_TPREL16_HA
:
9299 case R_PPC64_GOT_DTPREL16_HA
:
9300 case R_PPC64_GOT16_HA
:
9301 case R_PPC64_TOC16_HA
:
9302 insn_check
= check_ha
;
9305 case R_PPC64_GOT_TLSLD16_LO
:
9306 case R_PPC64_GOT_TLSGD16_LO
:
9307 case R_PPC64_GOT_TPREL16_LO_DS
:
9308 case R_PPC64_GOT_DTPREL16_LO_DS
:
9309 case R_PPC64_GOT16_LO
:
9310 case R_PPC64_GOT16_LO_DS
:
9311 case R_PPC64_TOC16_LO
:
9312 case R_PPC64_TOC16_LO_DS
:
9313 insn_check
= check_lo
;
9317 if (insn_check
!= no_check
)
9319 bfd_vma off
= rel
->r_offset
& ~3;
9320 unsigned char buf
[4];
9323 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9328 insn
= bfd_get_32 (ibfd
, buf
);
9329 if (insn_check
== check_lo
9330 ? !ok_lo_toc_insn (insn
, r_type
)
9331 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9332 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9336 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9337 sprintf (str
, "%#08x", insn
);
9338 info
->callbacks
->einfo
9339 /* xgettext:c-format */
9340 (_("%H: toc optimization is not supported for"
9341 " %s instruction.\n"),
9342 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9349 case R_PPC64_TOC16_LO
:
9350 case R_PPC64_TOC16_HI
:
9351 case R_PPC64_TOC16_HA
:
9352 case R_PPC64_TOC16_DS
:
9353 case R_PPC64_TOC16_LO_DS
:
9354 /* In case we're taking addresses of toc entries. */
9355 case R_PPC64_ADDR64
:
9362 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9363 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9374 val
= h
->root
.u
.def
.value
;
9376 val
= sym
->st_value
;
9377 val
+= rel
->r_addend
;
9379 if (val
>= toc
->size
)
9382 if ((skip
[val
>> 3] & can_optimize
) != 0)
9389 case R_PPC64_TOC16_HA
:
9392 case R_PPC64_TOC16_LO_DS
:
9393 off
= rel
->r_offset
;
9394 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9395 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9401 if ((opc
& (0x3f << 2)) == (58u << 2))
9406 /* Wrong sort of reloc, or not a ld. We may
9407 as well clear ref_from_discarded too. */
9414 /* For the toc section, we only mark as used if this
9415 entry itself isn't unused. */
9416 else if ((used
[rel
->r_offset
>> 3]
9417 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9420 /* Do all the relocs again, to catch reference
9429 if (elf_section_data (sec
)->relocs
!= relstart
)
9433 /* Merge the used and skip arrays. Assume that TOC
9434 doublewords not appearing as either used or unused belong
9435 to an entry more than one doubleword in size. */
9436 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9437 drop
< skip
+ (toc
->size
+ 7) / 8;
9442 *drop
&= ~ref_from_discarded
;
9443 if ((*drop
& can_optimize
) != 0)
9447 else if ((*drop
& ref_from_discarded
) != 0)
9450 last
= ref_from_discarded
;
9460 bfd_byte
*contents
, *src
;
9462 Elf_Internal_Sym
*sym
;
9463 bfd_boolean local_toc_syms
= FALSE
;
9465 /* Shuffle the toc contents, and at the same time convert the
9466 skip array from booleans into offsets. */
9467 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9470 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9472 for (src
= contents
, off
= 0, drop
= skip
;
9473 src
< contents
+ toc
->size
;
9476 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9481 memcpy (src
- off
, src
, 8);
9485 toc
->rawsize
= toc
->size
;
9486 toc
->size
= src
- contents
- off
;
9488 /* Adjust addends for relocs against the toc section sym,
9489 and optimize any accesses we can. */
9490 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9492 if (sec
->reloc_count
== 0
9493 || discarded_section (sec
))
9496 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9498 if (relstart
== NULL
)
9501 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9503 enum elf_ppc64_reloc_type r_type
;
9504 unsigned long r_symndx
;
9506 struct elf_link_hash_entry
*h
;
9509 r_type
= ELF64_R_TYPE (rel
->r_info
);
9516 case R_PPC64_TOC16_LO
:
9517 case R_PPC64_TOC16_HI
:
9518 case R_PPC64_TOC16_HA
:
9519 case R_PPC64_TOC16_DS
:
9520 case R_PPC64_TOC16_LO_DS
:
9521 case R_PPC64_ADDR64
:
9525 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9526 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9534 val
= h
->root
.u
.def
.value
;
9537 val
= sym
->st_value
;
9539 local_toc_syms
= TRUE
;
9542 val
+= rel
->r_addend
;
9544 if (val
> toc
->rawsize
)
9546 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9548 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9550 Elf_Internal_Rela
*tocrel
9551 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9552 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9556 case R_PPC64_TOC16_HA
:
9557 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9560 case R_PPC64_TOC16_LO_DS
:
9561 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9565 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9567 info
->callbacks
->einfo
9568 /* xgettext:c-format */
9569 (_("%H: %s references "
9570 "optimized away TOC entry\n"),
9571 ibfd
, sec
, rel
->r_offset
,
9572 ppc64_elf_howto_table
[r_type
]->name
);
9573 bfd_set_error (bfd_error_bad_value
);
9576 rel
->r_addend
= tocrel
->r_addend
;
9577 elf_section_data (sec
)->relocs
= relstart
;
9581 if (h
!= NULL
|| sym
->st_value
!= 0)
9584 rel
->r_addend
-= skip
[val
>> 3];
9585 elf_section_data (sec
)->relocs
= relstart
;
9588 if (elf_section_data (sec
)->relocs
!= relstart
)
9592 /* We shouldn't have local or global symbols defined in the TOC,
9593 but handle them anyway. */
9594 if (local_syms
!= NULL
)
9595 for (sym
= local_syms
;
9596 sym
< local_syms
+ symtab_hdr
->sh_info
;
9598 if (sym
->st_value
!= 0
9599 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9603 if (sym
->st_value
> toc
->rawsize
)
9604 i
= toc
->rawsize
>> 3;
9606 i
= sym
->st_value
>> 3;
9608 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9612 (_("%s defined on removed toc entry"),
9613 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9616 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9617 sym
->st_value
= (bfd_vma
) i
<< 3;
9620 sym
->st_value
-= skip
[i
];
9621 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9624 /* Adjust any global syms defined in this toc input section. */
9625 if (toc_inf
.global_toc_syms
)
9628 toc_inf
.skip
= skip
;
9629 toc_inf
.global_toc_syms
= FALSE
;
9630 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9634 if (toc
->reloc_count
!= 0)
9636 Elf_Internal_Shdr
*rel_hdr
;
9637 Elf_Internal_Rela
*wrel
;
9640 /* Remove unused toc relocs, and adjust those we keep. */
9641 if (toc_relocs
== NULL
)
9642 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9644 if (toc_relocs
== NULL
)
9648 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9649 if ((skip
[rel
->r_offset
>> 3]
9650 & (ref_from_discarded
| can_optimize
)) == 0)
9652 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9653 wrel
->r_info
= rel
->r_info
;
9654 wrel
->r_addend
= rel
->r_addend
;
9657 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9658 &local_syms
, NULL
, NULL
))
9661 elf_section_data (toc
)->relocs
= toc_relocs
;
9662 toc
->reloc_count
= wrel
- toc_relocs
;
9663 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9664 sz
= rel_hdr
->sh_entsize
;
9665 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9668 else if (toc_relocs
!= NULL
9669 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9672 if (local_syms
!= NULL
9673 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9675 if (!info
->keep_memory
)
9678 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9686 /* Return true iff input section I references the TOC using
9687 instructions limited to +/-32k offsets. */
9690 ppc64_elf_has_small_toc_reloc (asection
*i
)
9692 return (is_ppc64_elf (i
->owner
)
9693 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9696 /* Allocate space for one GOT entry. */
9699 allocate_got (struct elf_link_hash_entry
*h
,
9700 struct bfd_link_info
*info
,
9701 struct got_entry
*gent
)
9703 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9704 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9705 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9707 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9708 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9709 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9711 gent
->got
.offset
= got
->size
;
9712 got
->size
+= entsize
;
9714 if (h
->type
== STT_GNU_IFUNC
)
9716 htab
->elf
.irelplt
->size
+= rentsize
;
9717 htab
->got_reli_size
+= rentsize
;
9719 else if ((bfd_link_pic (info
)
9720 || (htab
->elf
.dynamic_sections_created
9722 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9723 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9725 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9726 relgot
->size
+= rentsize
;
9730 /* This function merges got entries in the same toc group. */
9733 merge_got_entries (struct got_entry
**pent
)
9735 struct got_entry
*ent
, *ent2
;
9737 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9738 if (!ent
->is_indirect
)
9739 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9740 if (!ent2
->is_indirect
9741 && ent2
->addend
== ent
->addend
9742 && ent2
->tls_type
== ent
->tls_type
9743 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9745 ent2
->is_indirect
= TRUE
;
9746 ent2
->got
.ent
= ent
;
9750 /* If H is undefined, make it dynamic if that makes sense. */
9753 ensure_undef_dynamic (struct bfd_link_info
*info
,
9754 struct elf_link_hash_entry
*h
)
9756 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9758 if (htab
->dynamic_sections_created
9759 && ((info
->dynamic_undefined_weak
!= 0
9760 && h
->root
.type
== bfd_link_hash_undefweak
)
9761 || h
->root
.type
== bfd_link_hash_undefined
)
9764 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9765 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9769 /* Allocate space in .plt, .got and associated reloc sections for
9773 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9775 struct bfd_link_info
*info
;
9776 struct ppc_link_hash_table
*htab
;
9778 struct ppc_link_hash_entry
*eh
;
9779 struct got_entry
**pgent
, *gent
;
9781 if (h
->root
.type
== bfd_link_hash_indirect
)
9784 info
= (struct bfd_link_info
*) inf
;
9785 htab
= ppc_hash_table (info
);
9789 eh
= (struct ppc_link_hash_entry
*) h
;
9790 /* Run through the TLS GD got entries first if we're changing them
9792 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9793 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9794 if (gent
->got
.refcount
> 0
9795 && (gent
->tls_type
& TLS_GD
) != 0)
9797 /* This was a GD entry that has been converted to TPREL. If
9798 there happens to be a TPREL entry we can use that one. */
9799 struct got_entry
*ent
;
9800 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9801 if (ent
->got
.refcount
> 0
9802 && (ent
->tls_type
& TLS_TPREL
) != 0
9803 && ent
->addend
== gent
->addend
9804 && ent
->owner
== gent
->owner
)
9806 gent
->got
.refcount
= 0;
9810 /* If not, then we'll be using our own TPREL entry. */
9811 if (gent
->got
.refcount
!= 0)
9812 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9815 /* Remove any list entry that won't generate a word in the GOT before
9816 we call merge_got_entries. Otherwise we risk merging to empty
9818 pgent
= &h
->got
.glist
;
9819 while ((gent
= *pgent
) != NULL
)
9820 if (gent
->got
.refcount
> 0)
9822 if ((gent
->tls_type
& TLS_LD
) != 0
9825 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9826 *pgent
= gent
->next
;
9829 pgent
= &gent
->next
;
9832 *pgent
= gent
->next
;
9834 if (!htab
->do_multi_toc
)
9835 merge_got_entries (&h
->got
.glist
);
9837 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9838 if (!gent
->is_indirect
)
9840 /* Make sure this symbol is output as a dynamic symbol. */
9841 if (!ensure_undef_dynamic (info
, h
))
9844 if (!is_ppc64_elf (gent
->owner
))
9847 allocate_got (h
, info
, gent
);
9850 /* If no dynamic sections we can't have dynamic relocs, except for
9851 IFUNCs which are handled even in static executables. */
9852 if (!htab
->elf
.dynamic_sections_created
9853 && h
->type
!= STT_GNU_IFUNC
)
9854 eh
->dyn_relocs
= NULL
;
9856 /* Also discard relocs on undefined weak syms with non-default
9857 visibility, or when dynamic_undefined_weak says so. */
9858 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9859 eh
->dyn_relocs
= NULL
;
9861 if (eh
->dyn_relocs
!= NULL
)
9863 struct elf_dyn_relocs
*p
, **pp
;
9865 /* In the shared -Bsymbolic case, discard space allocated for
9866 dynamic pc-relative relocs against symbols which turn out to
9867 be defined in regular objects. For the normal shared case,
9868 discard space for relocs that have become local due to symbol
9869 visibility changes. */
9871 if (bfd_link_pic (info
))
9873 /* Relocs that use pc_count are those that appear on a call
9874 insn, or certain REL relocs (see must_be_dyn_reloc) that
9875 can be generated via assembly. We want calls to
9876 protected symbols to resolve directly to the function
9877 rather than going via the plt. If people want function
9878 pointer comparisons to work as expected then they should
9879 avoid writing weird assembly. */
9880 if (SYMBOL_CALLS_LOCAL (info
, h
))
9882 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9884 p
->count
-= p
->pc_count
;
9893 if (eh
->dyn_relocs
!= NULL
)
9895 /* Make sure this symbol is output as a dynamic symbol. */
9896 if (!ensure_undef_dynamic (info
, h
))
9900 else if (h
->type
== STT_GNU_IFUNC
)
9902 /* A plt entry is always created when making direct calls to
9903 an ifunc, even when building a static executable, but
9904 that doesn't cover all cases. We may have only an ifunc
9905 initialised function pointer for a given ifunc symbol.
9907 For ELFv2, dynamic relocations are not required when
9908 generating a global entry PLT stub. */
9909 if (abiversion (info
->output_bfd
) >= 2)
9911 if (global_entry_stub (h
))
9912 eh
->dyn_relocs
= NULL
;
9915 /* For ELFv1 we have function descriptors. Descriptors need
9916 to be treated like PLT entries and thus have dynamic
9917 relocations. One exception is when the function
9918 descriptor is copied into .dynbss (which should only
9919 happen with ancient versions of gcc). */
9920 else if (h
->needs_copy
)
9921 eh
->dyn_relocs
= NULL
;
9923 else if (ELIMINATE_COPY_RELOCS
)
9925 /* For the non-pic case, discard space for relocs against
9926 symbols which turn out to need copy relocs or are not
9931 /* Make sure this symbol is output as a dynamic symbol. */
9932 if (!ensure_undef_dynamic (info
, h
))
9935 if (h
->dynindx
== -1)
9936 eh
->dyn_relocs
= NULL
;
9939 eh
->dyn_relocs
= NULL
;
9942 /* Finally, allocate space. */
9943 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9945 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9946 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9947 sreloc
= htab
->elf
.irelplt
;
9948 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9952 if ((htab
->elf
.dynamic_sections_created
9953 && h
->dynindx
!= -1)
9954 || h
->type
== STT_GNU_IFUNC
)
9956 struct plt_entry
*pent
;
9957 bfd_boolean doneone
= FALSE
;
9958 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9959 if (pent
->plt
.refcount
> 0)
9961 if (!htab
->elf
.dynamic_sections_created
9962 || h
->dynindx
== -1)
9965 pent
->plt
.offset
= s
->size
;
9966 s
->size
+= PLT_ENTRY_SIZE (htab
);
9967 s
= htab
->elf
.irelplt
;
9971 /* If this is the first .plt entry, make room for the special
9975 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9977 pent
->plt
.offset
= s
->size
;
9979 /* Make room for this entry. */
9980 s
->size
+= PLT_ENTRY_SIZE (htab
);
9982 /* Make room for the .glink code. */
9985 s
->size
+= GLINK_CALL_STUB_SIZE
;
9988 /* We need bigger stubs past index 32767. */
9989 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9996 /* We also need to make an entry in the .rela.plt section. */
9997 s
= htab
->elf
.srelplt
;
9999 s
->size
+= sizeof (Elf64_External_Rela
);
10003 pent
->plt
.offset
= (bfd_vma
) -1;
10006 h
->plt
.plist
= NULL
;
10012 h
->plt
.plist
= NULL
;
10019 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10020 to set up space for global entry stubs. These are put in glink,
10021 after the branch table. */
10024 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
10026 struct bfd_link_info
*info
;
10027 struct ppc_link_hash_table
*htab
;
10028 struct plt_entry
*pent
;
10031 if (h
->root
.type
== bfd_link_hash_indirect
)
10034 if (!h
->pointer_equality_needed
)
10037 if (h
->def_regular
)
10041 htab
= ppc_hash_table (info
);
10046 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
10047 if (pent
->plt
.offset
!= (bfd_vma
) -1
10048 && pent
->addend
== 0)
10050 /* For ELFv2, if this symbol is not defined in a regular file
10051 and we are not generating a shared library or pie, then we
10052 need to define the symbol in the executable on a call stub.
10053 This is to avoid text relocations. */
10054 s
->size
= (s
->size
+ 15) & -16;
10055 h
->root
.type
= bfd_link_hash_defined
;
10056 h
->root
.u
.def
.section
= s
;
10057 h
->root
.u
.def
.value
= s
->size
;
10064 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10065 read-only sections. */
10068 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
10070 if (h
->root
.type
== bfd_link_hash_indirect
)
10073 if (readonly_dynrelocs (h
))
10075 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
10077 /* Not an error, just cut short the traversal. */
10083 /* Set the sizes of the dynamic sections. */
10086 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
10087 struct bfd_link_info
*info
)
10089 struct ppc_link_hash_table
*htab
;
10092 bfd_boolean relocs
;
10094 struct got_entry
*first_tlsld
;
10096 htab
= ppc_hash_table (info
);
10100 dynobj
= htab
->elf
.dynobj
;
10101 if (dynobj
== NULL
)
10104 if (htab
->elf
.dynamic_sections_created
)
10106 /* Set the contents of the .interp section to the interpreter. */
10107 if (bfd_link_executable (info
) && !info
->nointerp
)
10109 s
= bfd_get_linker_section (dynobj
, ".interp");
10112 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10113 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10117 /* Set up .got offsets for local syms, and space for local dynamic
10119 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10121 struct got_entry
**lgot_ents
;
10122 struct got_entry
**end_lgot_ents
;
10123 struct plt_entry
**local_plt
;
10124 struct plt_entry
**end_local_plt
;
10125 unsigned char *lgot_masks
;
10126 bfd_size_type locsymcount
;
10127 Elf_Internal_Shdr
*symtab_hdr
;
10129 if (!is_ppc64_elf (ibfd
))
10132 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10134 struct ppc_dyn_relocs
*p
;
10136 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10138 if (!bfd_is_abs_section (p
->sec
)
10139 && bfd_is_abs_section (p
->sec
->output_section
))
10141 /* Input section has been discarded, either because
10142 it is a copy of a linkonce section or due to
10143 linker script /DISCARD/, so we'll be discarding
10146 else if (p
->count
!= 0)
10148 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10150 srel
= htab
->elf
.irelplt
;
10151 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10152 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10153 info
->flags
|= DF_TEXTREL
;
10158 lgot_ents
= elf_local_got_ents (ibfd
);
10162 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10163 locsymcount
= symtab_hdr
->sh_info
;
10164 end_lgot_ents
= lgot_ents
+ locsymcount
;
10165 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10166 end_local_plt
= local_plt
+ locsymcount
;
10167 lgot_masks
= (unsigned char *) end_local_plt
;
10168 s
= ppc64_elf_tdata (ibfd
)->got
;
10169 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10171 struct got_entry
**pent
, *ent
;
10174 while ((ent
= *pent
) != NULL
)
10175 if (ent
->got
.refcount
> 0)
10177 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10179 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10184 unsigned int ent_size
= 8;
10185 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10187 ent
->got
.offset
= s
->size
;
10188 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10193 s
->size
+= ent_size
;
10194 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10196 htab
->elf
.irelplt
->size
+= rel_size
;
10197 htab
->got_reli_size
+= rel_size
;
10199 else if (bfd_link_pic (info
))
10201 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10202 srel
->size
+= rel_size
;
10211 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10212 for (; local_plt
< end_local_plt
; ++local_plt
)
10214 struct plt_entry
*ent
;
10216 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10217 if (ent
->plt
.refcount
> 0)
10219 s
= htab
->elf
.iplt
;
10220 ent
->plt
.offset
= s
->size
;
10221 s
->size
+= PLT_ENTRY_SIZE (htab
);
10223 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10226 ent
->plt
.offset
= (bfd_vma
) -1;
10230 /* Allocate global sym .plt and .got entries, and space for global
10231 sym dynamic relocs. */
10232 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10233 /* Stash the end of glink branch table. */
10234 if (htab
->glink
!= NULL
)
10235 htab
->glink
->rawsize
= htab
->glink
->size
;
10237 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10238 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10240 first_tlsld
= NULL
;
10241 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10243 struct got_entry
*ent
;
10245 if (!is_ppc64_elf (ibfd
))
10248 ent
= ppc64_tlsld_got (ibfd
);
10249 if (ent
->got
.refcount
> 0)
10251 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10253 ent
->is_indirect
= TRUE
;
10254 ent
->got
.ent
= first_tlsld
;
10258 if (first_tlsld
== NULL
)
10260 s
= ppc64_elf_tdata (ibfd
)->got
;
10261 ent
->got
.offset
= s
->size
;
10264 if (bfd_link_pic (info
))
10266 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10267 srel
->size
+= sizeof (Elf64_External_Rela
);
10272 ent
->got
.offset
= (bfd_vma
) -1;
10275 /* We now have determined the sizes of the various dynamic sections.
10276 Allocate memory for them. */
10278 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10280 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10283 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10284 /* These haven't been allocated yet; don't strip. */
10286 else if (s
== htab
->elf
.sgot
10287 || s
== htab
->elf
.splt
10288 || s
== htab
->elf
.iplt
10289 || s
== htab
->glink
10290 || s
== htab
->elf
.sdynbss
10291 || s
== htab
->elf
.sdynrelro
)
10293 /* Strip this section if we don't need it; see the
10296 else if (s
== htab
->glink_eh_frame
)
10298 if (!bfd_is_abs_section (s
->output_section
))
10299 /* Not sized yet. */
10302 else if (CONST_STRNEQ (s
->name
, ".rela"))
10306 if (s
!= htab
->elf
.srelplt
)
10309 /* We use the reloc_count field as a counter if we need
10310 to copy relocs into the output file. */
10311 s
->reloc_count
= 0;
10316 /* It's not one of our sections, so don't allocate space. */
10322 /* If we don't need this section, strip it from the
10323 output file. This is mostly to handle .rela.bss and
10324 .rela.plt. We must create both sections in
10325 create_dynamic_sections, because they must be created
10326 before the linker maps input sections to output
10327 sections. The linker does that before
10328 adjust_dynamic_symbol is called, and it is that
10329 function which decides whether anything needs to go
10330 into these sections. */
10331 s
->flags
|= SEC_EXCLUDE
;
10335 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10338 /* Allocate memory for the section contents. We use bfd_zalloc
10339 here in case unused entries are not reclaimed before the
10340 section's contents are written out. This should not happen,
10341 but this way if it does we get a R_PPC64_NONE reloc in .rela
10342 sections instead of garbage.
10343 We also rely on the section contents being zero when writing
10344 the GOT and .dynrelro. */
10345 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10346 if (s
->contents
== NULL
)
10350 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10352 if (!is_ppc64_elf (ibfd
))
10355 s
= ppc64_elf_tdata (ibfd
)->got
;
10356 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10359 s
->flags
|= SEC_EXCLUDE
;
10362 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10363 if (s
->contents
== NULL
)
10367 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10371 s
->flags
|= SEC_EXCLUDE
;
10374 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10375 if (s
->contents
== NULL
)
10378 s
->reloc_count
= 0;
10383 if (htab
->elf
.dynamic_sections_created
)
10385 bfd_boolean tls_opt
;
10387 /* Add some entries to the .dynamic section. We fill in the
10388 values later, in ppc64_elf_finish_dynamic_sections, but we
10389 must add the entries now so that we get the correct size for
10390 the .dynamic section. The DT_DEBUG entry is filled in by the
10391 dynamic linker and used by the debugger. */
10392 #define add_dynamic_entry(TAG, VAL) \
10393 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10395 if (bfd_link_executable (info
))
10397 if (!add_dynamic_entry (DT_DEBUG
, 0))
10401 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10403 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10404 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10405 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10406 || !add_dynamic_entry (DT_JMPREL
, 0)
10407 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10411 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10413 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10414 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10418 tls_opt
= (htab
->params
->tls_get_addr_opt
10419 && htab
->tls_get_addr_fd
!= NULL
10420 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10421 if (tls_opt
|| !htab
->opd_abi
)
10423 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10429 if (!add_dynamic_entry (DT_RELA
, 0)
10430 || !add_dynamic_entry (DT_RELASZ
, 0)
10431 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10434 /* If any dynamic relocs apply to a read-only section,
10435 then we need a DT_TEXTREL entry. */
10436 if ((info
->flags
& DF_TEXTREL
) == 0)
10437 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10439 if ((info
->flags
& DF_TEXTREL
) != 0)
10441 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10446 #undef add_dynamic_entry
10451 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10454 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10456 if (h
->plt
.plist
!= NULL
10458 && !h
->pointer_equality_needed
)
10461 return _bfd_elf_hash_symbol (h
);
10464 /* Determine the type of stub needed, if any, for a call. */
10466 static inline enum ppc_stub_type
10467 ppc_type_of_stub (asection
*input_sec
,
10468 const Elf_Internal_Rela
*rel
,
10469 struct ppc_link_hash_entry
**hash
,
10470 struct plt_entry
**plt_ent
,
10471 bfd_vma destination
,
10472 unsigned long local_off
)
10474 struct ppc_link_hash_entry
*h
= *hash
;
10476 bfd_vma branch_offset
;
10477 bfd_vma max_branch_offset
;
10478 enum elf_ppc64_reloc_type r_type
;
10482 struct plt_entry
*ent
;
10483 struct ppc_link_hash_entry
*fdh
= h
;
10485 && h
->oh
->is_func_descriptor
)
10487 fdh
= ppc_follow_link (h
->oh
);
10491 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10492 if (ent
->addend
== rel
->r_addend
10493 && ent
->plt
.offset
!= (bfd_vma
) -1)
10496 return ppc_stub_plt_call
;
10499 /* Here, we know we don't have a plt entry. If we don't have a
10500 either a defined function descriptor or a defined entry symbol
10501 in a regular object file, then it is pointless trying to make
10502 any other type of stub. */
10503 if (!is_static_defined (&fdh
->elf
)
10504 && !is_static_defined (&h
->elf
))
10505 return ppc_stub_none
;
10507 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10509 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10510 struct plt_entry
**local_plt
= (struct plt_entry
**)
10511 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10512 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10514 if (local_plt
[r_symndx
] != NULL
)
10516 struct plt_entry
*ent
;
10518 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10519 if (ent
->addend
== rel
->r_addend
10520 && ent
->plt
.offset
!= (bfd_vma
) -1)
10523 return ppc_stub_plt_call
;
10528 /* Determine where the call point is. */
10529 location
= (input_sec
->output_offset
10530 + input_sec
->output_section
->vma
10533 branch_offset
= destination
- location
;
10534 r_type
= ELF64_R_TYPE (rel
->r_info
);
10536 /* Determine if a long branch stub is needed. */
10537 max_branch_offset
= 1 << 25;
10538 if (r_type
!= R_PPC64_REL24
)
10539 max_branch_offset
= 1 << 15;
10541 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10542 /* We need a stub. Figure out whether a long_branch or plt_branch
10543 is needed later. */
10544 return ppc_stub_long_branch
;
10546 return ppc_stub_none
;
10549 /* With power7 weakly ordered memory model, it is possible for ld.so
10550 to update a plt entry in one thread and have another thread see a
10551 stale zero toc entry. To avoid this we need some sort of acquire
10552 barrier in the call stub. One solution is to make the load of the
10553 toc word seem to appear to depend on the load of the function entry
10554 word. Another solution is to test for r2 being zero, and branch to
10555 the appropriate glink entry if so.
10557 . fake dep barrier compare
10558 . ld 12,xxx(2) ld 12,xxx(2)
10559 . mtctr 12 mtctr 12
10560 . xor 11,12,12 ld 2,xxx+8(2)
10561 . add 2,2,11 cmpldi 2,0
10562 . ld 2,xxx+8(2) bnectr+
10563 . bctr b <glink_entry>
10565 The solution involving the compare turns out to be faster, so
10566 that's what we use unless the branch won't reach. */
10568 #define ALWAYS_USE_FAKE_DEP 0
10569 #define ALWAYS_EMIT_R2SAVE 0
10571 #define PPC_LO(v) ((v) & 0xffff)
10572 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10573 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10575 static inline unsigned int
10576 plt_stub_size (struct ppc_link_hash_table
*htab
,
10577 struct ppc_stub_hash_entry
*stub_entry
,
10580 unsigned size
= 12;
10582 if (ALWAYS_EMIT_R2SAVE
10583 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10585 if (PPC_HA (off
) != 0)
10590 if (htab
->params
->plt_static_chain
)
10592 if (htab
->params
->plt_thread_safe
10593 && htab
->elf
.dynamic_sections_created
10594 && stub_entry
->h
!= NULL
10595 && stub_entry
->h
->elf
.dynindx
!= -1)
10597 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10600 if (stub_entry
->h
!= NULL
10601 && (stub_entry
->h
== htab
->tls_get_addr_fd
10602 || stub_entry
->h
== htab
->tls_get_addr
)
10603 && htab
->params
->tls_get_addr_opt
)
10606 if (ALWAYS_EMIT_R2SAVE
10607 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10613 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10614 then return the padding needed to do so. */
10615 static inline unsigned int
10616 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10617 struct ppc_stub_hash_entry
*stub_entry
,
10620 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10621 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10622 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10624 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10625 > ((stub_size
- 1) & -stub_align
))
10626 return stub_align
- (stub_off
& (stub_align
- 1));
10630 /* Build a .plt call stub. */
10632 static inline bfd_byte
*
10633 build_plt_stub (struct ppc_link_hash_table
*htab
,
10634 struct ppc_stub_hash_entry
*stub_entry
,
10635 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10637 bfd
*obfd
= htab
->params
->stub_bfd
;
10638 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10639 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10640 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10641 && htab
->elf
.dynamic_sections_created
10642 && stub_entry
->h
!= NULL
10643 && stub_entry
->h
->elf
.dynindx
!= -1);
10644 bfd_boolean use_fake_dep
= plt_thread_safe
;
10645 bfd_vma cmp_branch_off
= 0;
10647 if (!ALWAYS_USE_FAKE_DEP
10650 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10651 || stub_entry
->h
== htab
->tls_get_addr
)
10652 && htab
->params
->tls_get_addr_opt
))
10654 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10655 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10656 / PLT_ENTRY_SIZE (htab
));
10657 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10660 if (pltindex
> 32768)
10661 glinkoff
+= (pltindex
- 32768) * 4;
10663 + htab
->glink
->output_offset
10664 + htab
->glink
->output_section
->vma
);
10665 from
= (p
- stub_entry
->group
->stub_sec
->contents
10666 + 4 * (ALWAYS_EMIT_R2SAVE
10667 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10668 + 4 * (PPC_HA (offset
) != 0)
10669 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10670 != PPC_HA (offset
))
10671 + 4 * (plt_static_chain
!= 0)
10673 + stub_entry
->group
->stub_sec
->output_offset
10674 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10675 cmp_branch_off
= to
- from
;
10676 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10679 if (PPC_HA (offset
) != 0)
10683 if (ALWAYS_EMIT_R2SAVE
10684 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10685 r
[0].r_offset
+= 4;
10686 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10687 r
[1].r_offset
= r
[0].r_offset
+ 4;
10688 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10689 r
[1].r_addend
= r
[0].r_addend
;
10692 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10694 r
[2].r_offset
= r
[1].r_offset
+ 4;
10695 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10696 r
[2].r_addend
= r
[0].r_addend
;
10700 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10701 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10702 r
[2].r_addend
= r
[0].r_addend
+ 8;
10703 if (plt_static_chain
)
10705 r
[3].r_offset
= r
[2].r_offset
+ 4;
10706 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10707 r
[3].r_addend
= r
[0].r_addend
+ 16;
10712 if (ALWAYS_EMIT_R2SAVE
10713 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10714 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10717 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10718 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10722 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10723 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10726 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10728 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10731 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10736 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10737 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10739 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10740 if (plt_static_chain
)
10741 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10748 if (ALWAYS_EMIT_R2SAVE
10749 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10750 r
[0].r_offset
+= 4;
10751 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10754 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10756 r
[1].r_offset
= r
[0].r_offset
+ 4;
10757 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10758 r
[1].r_addend
= r
[0].r_addend
;
10762 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10763 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10764 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10765 if (plt_static_chain
)
10767 r
[2].r_offset
= r
[1].r_offset
+ 4;
10768 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10769 r
[2].r_addend
= r
[0].r_addend
+ 8;
10774 if (ALWAYS_EMIT_R2SAVE
10775 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10776 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10777 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10779 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10781 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10784 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10789 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10790 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10792 if (plt_static_chain
)
10793 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10794 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10797 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10799 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10800 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10801 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10804 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10808 /* Build a special .plt call stub for __tls_get_addr. */
10810 #define LD_R11_0R3 0xe9630000
10811 #define LD_R12_0R3 0xe9830000
10812 #define MR_R0_R3 0x7c601b78
10813 #define CMPDI_R11_0 0x2c2b0000
10814 #define ADD_R3_R12_R13 0x7c6c6a14
10815 #define BEQLR 0x4d820020
10816 #define MR_R3_R0 0x7c030378
10817 #define STD_R11_0R1 0xf9610000
10818 #define BCTRL 0x4e800421
10819 #define LD_R11_0R1 0xe9610000
10820 #define MTLR_R11 0x7d6803a6
10822 static inline bfd_byte
*
10823 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10824 struct ppc_stub_hash_entry
*stub_entry
,
10825 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10827 bfd
*obfd
= htab
->params
->stub_bfd
;
10829 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10830 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10831 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10832 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10833 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10834 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10835 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10837 r
[0].r_offset
+= 7 * 4;
10838 if (!ALWAYS_EMIT_R2SAVE
10839 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10840 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10842 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10843 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10846 r
[0].r_offset
+= 2 * 4;
10847 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10848 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10850 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10851 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10852 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10853 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10858 static Elf_Internal_Rela
*
10859 get_relocs (asection
*sec
, int count
)
10861 Elf_Internal_Rela
*relocs
;
10862 struct bfd_elf_section_data
*elfsec_data
;
10864 elfsec_data
= elf_section_data (sec
);
10865 relocs
= elfsec_data
->relocs
;
10866 if (relocs
== NULL
)
10868 bfd_size_type relsize
;
10869 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10870 relocs
= bfd_alloc (sec
->owner
, relsize
);
10871 if (relocs
== NULL
)
10873 elfsec_data
->relocs
= relocs
;
10874 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10875 sizeof (Elf_Internal_Shdr
));
10876 if (elfsec_data
->rela
.hdr
== NULL
)
10878 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10879 * sizeof (Elf64_External_Rela
));
10880 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10881 sec
->reloc_count
= 0;
10883 relocs
+= sec
->reloc_count
;
10884 sec
->reloc_count
+= count
;
10889 get_r2off (struct bfd_link_info
*info
,
10890 struct ppc_stub_hash_entry
*stub_entry
)
10892 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10893 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10897 /* Support linking -R objects. Get the toc pointer from the
10900 if (!htab
->opd_abi
)
10902 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10903 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10905 if (strcmp (opd
->name
, ".opd") != 0
10906 || opd
->reloc_count
!= 0)
10908 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10909 stub_entry
->h
->elf
.root
.root
.string
);
10910 bfd_set_error (bfd_error_bad_value
);
10911 return (bfd_vma
) -1;
10913 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10914 return (bfd_vma
) -1;
10915 r2off
= bfd_get_64 (opd
->owner
, buf
);
10916 r2off
-= elf_gp (info
->output_bfd
);
10918 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10923 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10925 struct ppc_stub_hash_entry
*stub_entry
;
10926 struct ppc_branch_hash_entry
*br_entry
;
10927 struct bfd_link_info
*info
;
10928 struct ppc_link_hash_table
*htab
;
10933 Elf_Internal_Rela
*r
;
10936 /* Massage our args to the form they really have. */
10937 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10940 htab
= ppc_hash_table (info
);
10944 /* Make a note of the offset within the stubs for this entry. */
10945 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10946 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10948 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10949 switch (stub_entry
->stub_type
)
10951 case ppc_stub_long_branch
:
10952 case ppc_stub_long_branch_r2off
:
10953 /* Branches are relative. This is where we are going to. */
10954 dest
= (stub_entry
->target_value
10955 + stub_entry
->target_section
->output_offset
10956 + stub_entry
->target_section
->output_section
->vma
);
10957 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10960 /* And this is where we are coming from. */
10961 off
-= (stub_entry
->stub_offset
10962 + stub_entry
->group
->stub_sec
->output_offset
10963 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10966 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10968 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10970 if (r2off
== (bfd_vma
) -1)
10972 htab
->stub_error
= TRUE
;
10975 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10978 if (PPC_HA (r2off
) != 0)
10980 bfd_put_32 (htab
->params
->stub_bfd
,
10981 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10985 if (PPC_LO (r2off
) != 0)
10987 bfd_put_32 (htab
->params
->stub_bfd
,
10988 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10994 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10996 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10998 info
->callbacks
->einfo
10999 (_("%P: long branch stub `%s' offset overflow\n"),
11000 stub_entry
->root
.string
);
11001 htab
->stub_error
= TRUE
;
11005 if (info
->emitrelocations
)
11007 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
11010 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11011 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
11012 r
->r_addend
= dest
;
11013 if (stub_entry
->h
!= NULL
)
11015 struct elf_link_hash_entry
**hashes
;
11016 unsigned long symndx
;
11017 struct ppc_link_hash_entry
*h
;
11019 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
11020 if (hashes
== NULL
)
11022 bfd_size_type hsize
;
11024 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
11025 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
11026 if (hashes
== NULL
)
11028 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
11029 htab
->stub_globals
= 1;
11031 symndx
= htab
->stub_globals
++;
11033 hashes
[symndx
] = &h
->elf
;
11034 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
11035 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
11036 h
= ppc_follow_link (h
->oh
);
11037 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
11038 /* H is an opd symbol. The addend must be zero. */
11042 off
= (h
->elf
.root
.u
.def
.value
11043 + h
->elf
.root
.u
.def
.section
->output_offset
11044 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
11045 r
->r_addend
-= off
;
11051 case ppc_stub_plt_branch
:
11052 case ppc_stub_plt_branch_r2off
:
11053 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11054 stub_entry
->root
.string
+ 9,
11056 if (br_entry
== NULL
)
11058 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
11059 stub_entry
->root
.string
);
11060 htab
->stub_error
= TRUE
;
11064 dest
= (stub_entry
->target_value
11065 + stub_entry
->target_section
->output_offset
11066 + stub_entry
->target_section
->output_section
->vma
);
11067 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11068 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11070 bfd_put_64 (htab
->brlt
->owner
, dest
,
11071 htab
->brlt
->contents
+ br_entry
->offset
);
11073 if (br_entry
->iter
== htab
->stub_iteration
)
11075 br_entry
->iter
= 0;
11077 if (htab
->relbrlt
!= NULL
)
11079 /* Create a reloc for the branch lookup table entry. */
11080 Elf_Internal_Rela rela
;
11083 rela
.r_offset
= (br_entry
->offset
11084 + htab
->brlt
->output_offset
11085 + htab
->brlt
->output_section
->vma
);
11086 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11087 rela
.r_addend
= dest
;
11089 rl
= htab
->relbrlt
->contents
;
11090 rl
+= (htab
->relbrlt
->reloc_count
++
11091 * sizeof (Elf64_External_Rela
));
11092 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
11094 else if (info
->emitrelocations
)
11096 r
= get_relocs (htab
->brlt
, 1);
11099 /* brlt, being SEC_LINKER_CREATED does not go through the
11100 normal reloc processing. Symbols and offsets are not
11101 translated from input file to output file form, so
11102 set up the offset per the output file. */
11103 r
->r_offset
= (br_entry
->offset
11104 + htab
->brlt
->output_offset
11105 + htab
->brlt
->output_section
->vma
);
11106 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11107 r
->r_addend
= dest
;
11111 dest
= (br_entry
->offset
11112 + htab
->brlt
->output_offset
11113 + htab
->brlt
->output_section
->vma
);
11116 - elf_gp (htab
->brlt
->output_section
->owner
)
11117 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11119 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11121 info
->callbacks
->einfo
11122 (_("%P: linkage table error against `%T'\n"),
11123 stub_entry
->root
.string
);
11124 bfd_set_error (bfd_error_bad_value
);
11125 htab
->stub_error
= TRUE
;
11129 if (info
->emitrelocations
)
11131 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11134 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11135 if (bfd_big_endian (info
->output_bfd
))
11136 r
[0].r_offset
+= 2;
11137 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11138 r
[0].r_offset
+= 4;
11139 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11140 r
[0].r_addend
= dest
;
11141 if (PPC_HA (off
) != 0)
11143 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11144 r
[1].r_offset
= r
[0].r_offset
+ 4;
11145 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11146 r
[1].r_addend
= r
[0].r_addend
;
11150 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11152 if (PPC_HA (off
) != 0)
11155 bfd_put_32 (htab
->params
->stub_bfd
,
11156 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11158 bfd_put_32 (htab
->params
->stub_bfd
,
11159 LD_R12_0R12
| PPC_LO (off
), loc
);
11164 bfd_put_32 (htab
->params
->stub_bfd
,
11165 LD_R12_0R2
| PPC_LO (off
), loc
);
11170 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11172 if (r2off
== (bfd_vma
) -1)
11174 htab
->stub_error
= TRUE
;
11178 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11181 if (PPC_HA (off
) != 0)
11184 bfd_put_32 (htab
->params
->stub_bfd
,
11185 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11187 bfd_put_32 (htab
->params
->stub_bfd
,
11188 LD_R12_0R12
| PPC_LO (off
), loc
);
11191 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11193 if (PPC_HA (r2off
) != 0)
11197 bfd_put_32 (htab
->params
->stub_bfd
,
11198 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11200 if (PPC_LO (r2off
) != 0)
11204 bfd_put_32 (htab
->params
->stub_bfd
,
11205 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11209 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11211 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11214 case ppc_stub_plt_call
:
11215 case ppc_stub_plt_call_r2save
:
11216 if (stub_entry
->h
!= NULL
11217 && stub_entry
->h
->is_func_descriptor
11218 && stub_entry
->h
->oh
!= NULL
)
11220 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11222 /* If the old-ABI "dot-symbol" is undefined make it weak so
11223 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11224 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11225 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11226 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11227 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11230 /* Now build the stub. */
11231 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11232 if (dest
>= (bfd_vma
) -2)
11235 plt
= htab
->elf
.splt
;
11236 if (!htab
->elf
.dynamic_sections_created
11237 || stub_entry
->h
== NULL
11238 || stub_entry
->h
->elf
.dynindx
== -1)
11239 plt
= htab
->elf
.iplt
;
11241 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11243 if (stub_entry
->h
== NULL
11244 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11246 Elf_Internal_Rela rela
;
11249 rela
.r_offset
= dest
;
11251 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11253 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11254 rela
.r_addend
= (stub_entry
->target_value
11255 + stub_entry
->target_section
->output_offset
11256 + stub_entry
->target_section
->output_section
->vma
);
11258 rl
= (htab
->elf
.irelplt
->contents
11259 + (htab
->elf
.irelplt
->reloc_count
++
11260 * sizeof (Elf64_External_Rela
)));
11261 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11262 stub_entry
->plt_ent
->plt
.offset
|= 1;
11263 htab
->local_ifunc_resolver
= 1;
11267 - elf_gp (plt
->output_section
->owner
)
11268 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11270 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11272 info
->callbacks
->einfo
11273 /* xgettext:c-format */
11274 (_("%P: linkage table error against `%T'\n"),
11275 stub_entry
->h
!= NULL
11276 ? stub_entry
->h
->elf
.root
.root
.string
11278 bfd_set_error (bfd_error_bad_value
);
11279 htab
->stub_error
= TRUE
;
11283 if (htab
->params
->plt_stub_align
!= 0)
11285 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11287 stub_entry
->group
->stub_sec
->size
+= pad
;
11288 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11293 if (info
->emitrelocations
)
11295 r
= get_relocs (stub_entry
->group
->stub_sec
,
11296 ((PPC_HA (off
) != 0)
11298 ? 2 + (htab
->params
->plt_static_chain
11299 && PPC_HA (off
+ 16) == PPC_HA (off
))
11303 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11304 if (bfd_big_endian (info
->output_bfd
))
11305 r
[0].r_offset
+= 2;
11306 r
[0].r_addend
= dest
;
11308 if (stub_entry
->h
!= NULL
11309 && (stub_entry
->h
== htab
->tls_get_addr_fd
11310 || stub_entry
->h
== htab
->tls_get_addr
)
11311 && htab
->params
->tls_get_addr_opt
)
11312 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11314 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11318 case ppc_stub_save_res
:
11326 stub_entry
->group
->stub_sec
->size
+= size
;
11328 if (htab
->params
->emit_stub_syms
)
11330 struct elf_link_hash_entry
*h
;
11333 const char *const stub_str
[] = { "long_branch",
11334 "long_branch_r2off",
11336 "plt_branch_r2off",
11340 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11341 len2
= strlen (stub_entry
->root
.string
);
11342 name
= bfd_malloc (len1
+ len2
+ 2);
11345 memcpy (name
, stub_entry
->root
.string
, 9);
11346 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11347 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11348 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11351 if (h
->root
.type
== bfd_link_hash_new
)
11353 h
->root
.type
= bfd_link_hash_defined
;
11354 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11355 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11356 h
->ref_regular
= 1;
11357 h
->def_regular
= 1;
11358 h
->ref_regular_nonweak
= 1;
11359 h
->forced_local
= 1;
11361 h
->root
.linker_def
= 1;
11368 /* As above, but don't actually build the stub. Just bump offset so
11369 we know stub section sizes, and select plt_branch stubs where
11370 long_branch stubs won't do. */
11373 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11375 struct ppc_stub_hash_entry
*stub_entry
;
11376 struct bfd_link_info
*info
;
11377 struct ppc_link_hash_table
*htab
;
11381 /* Massage our args to the form they really have. */
11382 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11385 htab
= ppc_hash_table (info
);
11389 if (stub_entry
->h
!= NULL
11390 && stub_entry
->h
->save_res
11391 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11392 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11394 /* Don't make stubs to out-of-line register save/restore
11395 functions. Instead, emit copies of the functions. */
11396 stub_entry
->group
->needs_save_res
= 1;
11397 stub_entry
->stub_type
= ppc_stub_save_res
;
11401 if (stub_entry
->stub_type
== ppc_stub_plt_call
11402 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11405 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11406 if (off
>= (bfd_vma
) -2)
11408 plt
= htab
->elf
.splt
;
11409 if (!htab
->elf
.dynamic_sections_created
11410 || stub_entry
->h
== NULL
11411 || stub_entry
->h
->elf
.dynindx
== -1)
11412 plt
= htab
->elf
.iplt
;
11413 off
+= (plt
->output_offset
11414 + plt
->output_section
->vma
11415 - elf_gp (plt
->output_section
->owner
)
11416 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11418 size
= plt_stub_size (htab
, stub_entry
, off
);
11419 if (stub_entry
->h
!= NULL
11420 && (stub_entry
->h
== htab
->tls_get_addr_fd
11421 || stub_entry
->h
== htab
->tls_get_addr
)
11422 && htab
->params
->tls_get_addr_opt
11423 && (ALWAYS_EMIT_R2SAVE
11424 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11425 stub_entry
->group
->tls_get_addr_opt_bctrl
11426 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11428 if (htab
->params
->plt_stub_align
)
11429 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11430 if (info
->emitrelocations
)
11432 stub_entry
->group
->stub_sec
->reloc_count
11433 += ((PPC_HA (off
) != 0)
11435 ? 2 + (htab
->params
->plt_static_chain
11436 && PPC_HA (off
+ 16) == PPC_HA (off
))
11438 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11443 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11446 bfd_vma local_off
= 0;
11448 off
= (stub_entry
->target_value
11449 + stub_entry
->target_section
->output_offset
11450 + stub_entry
->target_section
->output_section
->vma
);
11451 off
-= (stub_entry
->group
->stub_sec
->size
11452 + stub_entry
->group
->stub_sec
->output_offset
11453 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11455 /* Reset the stub type from the plt variant in case we now
11456 can reach with a shorter stub. */
11457 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11458 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11461 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11463 r2off
= get_r2off (info
, stub_entry
);
11464 if (r2off
== (bfd_vma
) -1)
11466 htab
->stub_error
= TRUE
;
11470 if (PPC_HA (r2off
) != 0)
11472 if (PPC_LO (r2off
) != 0)
11477 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11479 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11480 Do the same for -R objects without function descriptors. */
11481 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11482 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11484 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11486 struct ppc_branch_hash_entry
*br_entry
;
11488 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11489 stub_entry
->root
.string
+ 9,
11491 if (br_entry
== NULL
)
11493 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11494 stub_entry
->root
.string
);
11495 htab
->stub_error
= TRUE
;
11499 if (br_entry
->iter
!= htab
->stub_iteration
)
11501 br_entry
->iter
= htab
->stub_iteration
;
11502 br_entry
->offset
= htab
->brlt
->size
;
11503 htab
->brlt
->size
+= 8;
11505 if (htab
->relbrlt
!= NULL
)
11506 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11507 else if (info
->emitrelocations
)
11509 htab
->brlt
->reloc_count
+= 1;
11510 htab
->brlt
->flags
|= SEC_RELOC
;
11514 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11515 off
= (br_entry
->offset
11516 + htab
->brlt
->output_offset
11517 + htab
->brlt
->output_section
->vma
11518 - elf_gp (htab
->brlt
->output_section
->owner
)
11519 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11521 if (info
->emitrelocations
)
11523 stub_entry
->group
->stub_sec
->reloc_count
11524 += 1 + (PPC_HA (off
) != 0);
11525 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11528 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11531 if (PPC_HA (off
) != 0)
11537 if (PPC_HA (off
) != 0)
11540 if (PPC_HA (r2off
) != 0)
11542 if (PPC_LO (r2off
) != 0)
11546 else if (info
->emitrelocations
)
11548 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11549 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11553 stub_entry
->group
->stub_sec
->size
+= size
;
11557 /* Set up various things so that we can make a list of input sections
11558 for each output section included in the link. Returns -1 on error,
11559 0 when no stubs will be needed, and 1 on success. */
11562 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11566 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11571 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11572 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11573 htab
->sec_info
= bfd_zmalloc (amt
);
11574 if (htab
->sec_info
== NULL
)
11577 /* Set toc_off for com, und, abs and ind sections. */
11578 for (id
= 0; id
< 3; id
++)
11579 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11584 /* Set up for first pass at multitoc partitioning. */
11587 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11589 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11591 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11592 htab
->toc_bfd
= NULL
;
11593 htab
->toc_first_sec
= NULL
;
11596 /* The linker repeatedly calls this function for each TOC input section
11597 and linker generated GOT section. Group input bfds such that the toc
11598 within a group is less than 64k in size. */
11601 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11603 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11604 bfd_vma addr
, off
, limit
;
11609 if (!htab
->second_toc_pass
)
11611 /* Keep track of the first .toc or .got section for this input bfd. */
11612 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11616 htab
->toc_bfd
= isec
->owner
;
11617 htab
->toc_first_sec
= isec
;
11620 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11621 off
= addr
- htab
->toc_curr
;
11622 limit
= 0x80008000;
11623 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11625 if (off
+ isec
->size
> limit
)
11627 addr
= (htab
->toc_first_sec
->output_offset
11628 + htab
->toc_first_sec
->output_section
->vma
);
11629 htab
->toc_curr
= addr
;
11630 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11633 /* toc_curr is the base address of this toc group. Set elf_gp
11634 for the input section to be the offset relative to the
11635 output toc base plus 0x8000. Making the input elf_gp an
11636 offset allows us to move the toc as a whole without
11637 recalculating input elf_gp. */
11638 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11639 off
+= TOC_BASE_OFF
;
11641 /* Die if someone uses a linker script that doesn't keep input
11642 file .toc and .got together. */
11644 && elf_gp (isec
->owner
) != 0
11645 && elf_gp (isec
->owner
) != off
)
11648 elf_gp (isec
->owner
) = off
;
11652 /* During the second pass toc_first_sec points to the start of
11653 a toc group, and toc_curr is used to track the old elf_gp.
11654 We use toc_bfd to ensure we only look at each bfd once. */
11655 if (htab
->toc_bfd
== isec
->owner
)
11657 htab
->toc_bfd
= isec
->owner
;
11659 if (htab
->toc_first_sec
== NULL
11660 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11662 htab
->toc_curr
= elf_gp (isec
->owner
);
11663 htab
->toc_first_sec
= isec
;
11665 addr
= (htab
->toc_first_sec
->output_offset
11666 + htab
->toc_first_sec
->output_section
->vma
);
11667 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11668 elf_gp (isec
->owner
) = off
;
11673 /* Called via elf_link_hash_traverse to merge GOT entries for global
11677 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11679 if (h
->root
.type
== bfd_link_hash_indirect
)
11682 merge_got_entries (&h
->got
.glist
);
11687 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11691 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11693 struct got_entry
*gent
;
11695 if (h
->root
.type
== bfd_link_hash_indirect
)
11698 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11699 if (!gent
->is_indirect
)
11700 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11704 /* Called on the first multitoc pass after the last call to
11705 ppc64_elf_next_toc_section. This function removes duplicate GOT
11709 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11711 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11712 struct bfd
*ibfd
, *ibfd2
;
11713 bfd_boolean done_something
;
11715 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11717 if (!htab
->do_multi_toc
)
11720 /* Merge global sym got entries within a toc group. */
11721 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11723 /* And tlsld_got. */
11724 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11726 struct got_entry
*ent
, *ent2
;
11728 if (!is_ppc64_elf (ibfd
))
11731 ent
= ppc64_tlsld_got (ibfd
);
11732 if (!ent
->is_indirect
11733 && ent
->got
.offset
!= (bfd_vma
) -1)
11735 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11737 if (!is_ppc64_elf (ibfd2
))
11740 ent2
= ppc64_tlsld_got (ibfd2
);
11741 if (!ent2
->is_indirect
11742 && ent2
->got
.offset
!= (bfd_vma
) -1
11743 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11745 ent2
->is_indirect
= TRUE
;
11746 ent2
->got
.ent
= ent
;
11752 /* Zap sizes of got sections. */
11753 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11754 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11755 htab
->got_reli_size
= 0;
11757 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11759 asection
*got
, *relgot
;
11761 if (!is_ppc64_elf (ibfd
))
11764 got
= ppc64_elf_tdata (ibfd
)->got
;
11767 got
->rawsize
= got
->size
;
11769 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11770 relgot
->rawsize
= relgot
->size
;
11775 /* Now reallocate the got, local syms first. We don't need to
11776 allocate section contents again since we never increase size. */
11777 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11779 struct got_entry
**lgot_ents
;
11780 struct got_entry
**end_lgot_ents
;
11781 struct plt_entry
**local_plt
;
11782 struct plt_entry
**end_local_plt
;
11783 unsigned char *lgot_masks
;
11784 bfd_size_type locsymcount
;
11785 Elf_Internal_Shdr
*symtab_hdr
;
11788 if (!is_ppc64_elf (ibfd
))
11791 lgot_ents
= elf_local_got_ents (ibfd
);
11795 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11796 locsymcount
= symtab_hdr
->sh_info
;
11797 end_lgot_ents
= lgot_ents
+ locsymcount
;
11798 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11799 end_local_plt
= local_plt
+ locsymcount
;
11800 lgot_masks
= (unsigned char *) end_local_plt
;
11801 s
= ppc64_elf_tdata (ibfd
)->got
;
11802 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11804 struct got_entry
*ent
;
11806 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11808 unsigned int ent_size
= 8;
11809 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11811 ent
->got
.offset
= s
->size
;
11812 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11817 s
->size
+= ent_size
;
11818 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11820 htab
->elf
.irelplt
->size
+= rel_size
;
11821 htab
->got_reli_size
+= rel_size
;
11823 else if (bfd_link_pic (info
))
11825 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11826 srel
->size
+= rel_size
;
11832 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11834 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11836 struct got_entry
*ent
;
11838 if (!is_ppc64_elf (ibfd
))
11841 ent
= ppc64_tlsld_got (ibfd
);
11842 if (!ent
->is_indirect
11843 && ent
->got
.offset
!= (bfd_vma
) -1)
11845 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11846 ent
->got
.offset
= s
->size
;
11848 if (bfd_link_pic (info
))
11850 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11851 srel
->size
+= sizeof (Elf64_External_Rela
);
11856 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11857 if (!done_something
)
11858 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11862 if (!is_ppc64_elf (ibfd
))
11865 got
= ppc64_elf_tdata (ibfd
)->got
;
11868 done_something
= got
->rawsize
!= got
->size
;
11869 if (done_something
)
11874 if (done_something
)
11875 (*htab
->params
->layout_sections_again
) ();
11877 /* Set up for second pass over toc sections to recalculate elf_gp
11878 on input sections. */
11879 htab
->toc_bfd
= NULL
;
11880 htab
->toc_first_sec
= NULL
;
11881 htab
->second_toc_pass
= TRUE
;
11882 return done_something
;
11885 /* Called after second pass of multitoc partitioning. */
11888 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11890 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11892 /* After the second pass, toc_curr tracks the TOC offset used
11893 for code sections below in ppc64_elf_next_input_section. */
11894 htab
->toc_curr
= TOC_BASE_OFF
;
11897 /* No toc references were found in ISEC. If the code in ISEC makes no
11898 calls, then there's no need to use toc adjusting stubs when branching
11899 into ISEC. Actually, indirect calls from ISEC are OK as they will
11900 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11901 needed, and 2 if a cyclical call-graph was found but no other reason
11902 for a stub was detected. If called from the top level, a return of
11903 2 means the same as a return of 0. */
11906 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11910 /* Mark this section as checked. */
11911 isec
->call_check_done
= 1;
11913 /* We know none of our code bearing sections will need toc stubs. */
11914 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11917 if (isec
->size
== 0)
11920 if (isec
->output_section
== NULL
)
11924 if (isec
->reloc_count
!= 0)
11926 Elf_Internal_Rela
*relstart
, *rel
;
11927 Elf_Internal_Sym
*local_syms
;
11928 struct ppc_link_hash_table
*htab
;
11930 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11931 info
->keep_memory
);
11932 if (relstart
== NULL
)
11935 /* Look for branches to outside of this section. */
11937 htab
= ppc_hash_table (info
);
11941 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11943 enum elf_ppc64_reloc_type r_type
;
11944 unsigned long r_symndx
;
11945 struct elf_link_hash_entry
*h
;
11946 struct ppc_link_hash_entry
*eh
;
11947 Elf_Internal_Sym
*sym
;
11949 struct _opd_sec_data
*opd
;
11953 r_type
= ELF64_R_TYPE (rel
->r_info
);
11954 if (r_type
!= R_PPC64_REL24
11955 && r_type
!= R_PPC64_REL14
11956 && r_type
!= R_PPC64_REL14_BRTAKEN
11957 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11960 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11961 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11968 /* Calls to dynamic lib functions go through a plt call stub
11970 eh
= (struct ppc_link_hash_entry
*) h
;
11972 && (eh
->elf
.plt
.plist
!= NULL
11974 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11980 if (sym_sec
== NULL
)
11981 /* Ignore other undefined symbols. */
11984 /* Assume branches to other sections not included in the
11985 link need stubs too, to cover -R and absolute syms. */
11986 if (sym_sec
->output_section
== NULL
)
11993 sym_value
= sym
->st_value
;
11996 if (h
->root
.type
!= bfd_link_hash_defined
11997 && h
->root
.type
!= bfd_link_hash_defweak
)
11999 sym_value
= h
->root
.u
.def
.value
;
12001 sym_value
+= rel
->r_addend
;
12003 /* If this branch reloc uses an opd sym, find the code section. */
12004 opd
= get_opd_info (sym_sec
);
12007 if (h
== NULL
&& opd
->adjust
!= NULL
)
12011 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12013 /* Assume deleted functions won't ever be called. */
12015 sym_value
+= adjust
;
12018 dest
= opd_entry_value (sym_sec
, sym_value
,
12019 &sym_sec
, NULL
, FALSE
);
12020 if (dest
== (bfd_vma
) -1)
12025 + sym_sec
->output_offset
12026 + sym_sec
->output_section
->vma
);
12028 /* Ignore branch to self. */
12029 if (sym_sec
== isec
)
12032 /* If the called function uses the toc, we need a stub. */
12033 if (sym_sec
->has_toc_reloc
12034 || sym_sec
->makes_toc_func_call
)
12040 /* Assume any branch that needs a long branch stub might in fact
12041 need a plt_branch stub. A plt_branch stub uses r2. */
12042 else if (dest
- (isec
->output_offset
12043 + isec
->output_section
->vma
12044 + rel
->r_offset
) + (1 << 25)
12045 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12053 /* If calling back to a section in the process of being
12054 tested, we can't say for sure that no toc adjusting stubs
12055 are needed, so don't return zero. */
12056 else if (sym_sec
->call_check_in_progress
)
12059 /* Branches to another section that itself doesn't have any TOC
12060 references are OK. Recursively call ourselves to check. */
12061 else if (!sym_sec
->call_check_done
)
12065 /* Mark current section as indeterminate, so that other
12066 sections that call back to current won't be marked as
12068 isec
->call_check_in_progress
= 1;
12069 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
12070 isec
->call_check_in_progress
= 0;
12081 if (local_syms
!= NULL
12082 && (elf_symtab_hdr (isec
->owner
).contents
12083 != (unsigned char *) local_syms
))
12085 if (elf_section_data (isec
)->relocs
!= relstart
)
12090 && isec
->map_head
.s
!= NULL
12091 && (strcmp (isec
->output_section
->name
, ".init") == 0
12092 || strcmp (isec
->output_section
->name
, ".fini") == 0))
12094 if (isec
->map_head
.s
->has_toc_reloc
12095 || isec
->map_head
.s
->makes_toc_func_call
)
12097 else if (!isec
->map_head
.s
->call_check_done
)
12100 isec
->call_check_in_progress
= 1;
12101 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
12102 isec
->call_check_in_progress
= 0;
12109 isec
->makes_toc_func_call
= 1;
12114 /* The linker repeatedly calls this function for each input section,
12115 in the order that input sections are linked into output sections.
12116 Build lists of input sections to determine groupings between which
12117 we may insert linker stubs. */
12120 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12122 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12127 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12128 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12130 /* This happens to make the list in reverse order,
12131 which is what we want. */
12132 htab
->sec_info
[isec
->id
].u
.list
12133 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12134 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12137 if (htab
->multi_toc_needed
)
12139 /* Analyse sections that aren't already flagged as needing a
12140 valid toc pointer. Exclude .fixup for the linux kernel.
12141 .fixup contains branches, but only back to the function that
12142 hit an exception. */
12143 if (!(isec
->has_toc_reloc
12144 || (isec
->flags
& SEC_CODE
) == 0
12145 || strcmp (isec
->name
, ".fixup") == 0
12146 || isec
->call_check_done
))
12148 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12151 /* Make all sections use the TOC assigned for this object file.
12152 This will be wrong for pasted sections; We fix that in
12153 check_pasted_section(). */
12154 if (elf_gp (isec
->owner
) != 0)
12155 htab
->toc_curr
= elf_gp (isec
->owner
);
12158 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12162 /* Check that all .init and .fini sections use the same toc, if they
12163 have toc relocs. */
12166 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12168 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12172 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12173 bfd_vma toc_off
= 0;
12176 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12177 if (i
->has_toc_reloc
)
12180 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12181 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12186 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12187 if (i
->makes_toc_func_call
)
12189 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12193 /* Make sure the whole pasted function uses the same toc offset. */
12195 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12196 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12202 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12204 return (check_pasted_section (info
, ".init")
12205 & check_pasted_section (info
, ".fini"));
12208 /* See whether we can group stub sections together. Grouping stub
12209 sections may result in fewer stubs. More importantly, we need to
12210 put all .init* and .fini* stubs at the beginning of the .init or
12211 .fini output sections respectively, because glibc splits the
12212 _init and _fini functions into multiple parts. Putting a stub in
12213 the middle of a function is not a good idea. */
12216 group_sections (struct bfd_link_info
*info
,
12217 bfd_size_type stub_group_size
,
12218 bfd_boolean stubs_always_before_branch
)
12220 struct ppc_link_hash_table
*htab
;
12222 bfd_boolean suppress_size_errors
;
12224 htab
= ppc_hash_table (info
);
12228 suppress_size_errors
= FALSE
;
12229 if (stub_group_size
== 1)
12231 /* Default values. */
12232 if (stubs_always_before_branch
)
12233 stub_group_size
= 0x1e00000;
12235 stub_group_size
= 0x1c00000;
12236 suppress_size_errors
= TRUE
;
12239 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12243 if (osec
->id
>= htab
->sec_info_arr_size
)
12246 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12247 while (tail
!= NULL
)
12251 bfd_size_type total
;
12252 bfd_boolean big_sec
;
12254 struct map_stub
*group
;
12255 bfd_size_type group_size
;
12258 total
= tail
->size
;
12259 group_size
= (ppc64_elf_section_data (tail
) != NULL
12260 && ppc64_elf_section_data (tail
)->has_14bit_branch
12261 ? stub_group_size
>> 10 : stub_group_size
);
12263 big_sec
= total
> group_size
;
12264 if (big_sec
&& !suppress_size_errors
)
12265 /* xgettext:c-format */
12266 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12267 tail
->owner
, tail
);
12268 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12270 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12271 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12272 < (ppc64_elf_section_data (prev
) != NULL
12273 && ppc64_elf_section_data (prev
)->has_14bit_branch
12274 ? (group_size
= stub_group_size
>> 10) : group_size
))
12275 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12278 /* OK, the size from the start of CURR to the end is less
12279 than group_size and thus can be handled by one stub
12280 section. (or the tail section is itself larger than
12281 group_size, in which case we may be toast.) We should
12282 really be keeping track of the total size of stubs added
12283 here, as stubs contribute to the final output section
12284 size. That's a little tricky, and this way will only
12285 break if stubs added make the total size more than 2^25,
12286 ie. for the default stub_group_size, if stubs total more
12287 than 2097152 bytes, or nearly 75000 plt call stubs. */
12288 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12291 group
->link_sec
= curr
;
12292 group
->stub_sec
= NULL
;
12293 group
->needs_save_res
= 0;
12294 group
->tls_get_addr_opt_bctrl
= -1u;
12295 group
->next
= htab
->group
;
12296 htab
->group
= group
;
12299 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12300 /* Set up this stub group. */
12301 htab
->sec_info
[tail
->id
].u
.group
= group
;
12303 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12305 /* But wait, there's more! Input sections up to group_size
12306 bytes before the stub section can be handled by it too.
12307 Don't do this if we have a really large section after the
12308 stubs, as adding more stubs increases the chance that
12309 branches may not reach into the stub section. */
12310 if (!stubs_always_before_branch
&& !big_sec
)
12313 while (prev
!= NULL
12314 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12315 < (ppc64_elf_section_data (prev
) != NULL
12316 && ppc64_elf_section_data (prev
)->has_14bit_branch
12317 ? (group_size
= stub_group_size
>> 10) : group_size
))
12318 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12321 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12322 htab
->sec_info
[tail
->id
].u
.group
= group
;
12331 static const unsigned char glink_eh_frame_cie
[] =
12333 0, 0, 0, 16, /* length. */
12334 0, 0, 0, 0, /* id. */
12335 1, /* CIE version. */
12336 'z', 'R', 0, /* Augmentation string. */
12337 4, /* Code alignment. */
12338 0x78, /* Data alignment. */
12340 1, /* Augmentation size. */
12341 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12342 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12346 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12348 size_t this_size
= 17;
12349 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12351 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12354 else if (to_bctrl
< 256)
12356 else if (to_bctrl
< 65536)
12362 this_size
= (this_size
+ align
- 1) & -align
;
12366 /* Stripping output sections is normally done before dynamic section
12367 symbols have been allocated. This function is called later, and
12368 handles cases like htab->brlt which is mapped to its own output
12372 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12374 if (isec
->size
== 0
12375 && isec
->output_section
->size
== 0
12376 && !(isec
->output_section
->flags
& SEC_KEEP
)
12377 && !bfd_section_removed_from_list (info
->output_bfd
,
12378 isec
->output_section
)
12379 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12381 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12382 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12383 info
->output_bfd
->section_count
--;
12387 /* Determine and set the size of the stub section for a final link.
12389 The basic idea here is to examine all the relocations looking for
12390 PC-relative calls to a target that is unreachable with a "bl"
12394 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12396 bfd_size_type stub_group_size
;
12397 bfd_boolean stubs_always_before_branch
;
12398 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12403 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12404 htab
->params
->plt_thread_safe
= 1;
12405 if (!htab
->opd_abi
)
12406 htab
->params
->plt_thread_safe
= 0;
12407 else if (htab
->params
->plt_thread_safe
== -1)
12409 static const char *const thread_starter
[] =
12413 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12415 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12416 "mq_notify", "create_timer",
12421 "GOMP_parallel_start",
12422 "GOMP_parallel_loop_static",
12423 "GOMP_parallel_loop_static_start",
12424 "GOMP_parallel_loop_dynamic",
12425 "GOMP_parallel_loop_dynamic_start",
12426 "GOMP_parallel_loop_guided",
12427 "GOMP_parallel_loop_guided_start",
12428 "GOMP_parallel_loop_runtime",
12429 "GOMP_parallel_loop_runtime_start",
12430 "GOMP_parallel_sections",
12431 "GOMP_parallel_sections_start",
12437 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12439 struct elf_link_hash_entry
*h
;
12440 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12441 FALSE
, FALSE
, TRUE
);
12442 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12443 if (htab
->params
->plt_thread_safe
)
12447 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12448 if (htab
->params
->group_size
< 0)
12449 stub_group_size
= -htab
->params
->group_size
;
12451 stub_group_size
= htab
->params
->group_size
;
12453 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12456 #define STUB_SHRINK_ITER 20
12457 /* Loop until no stubs added. After iteration 20 of this loop we may
12458 exit on a stub section shrinking. This is to break out of a
12459 pathological case where adding stubs on one iteration decreases
12460 section gaps (perhaps due to alignment), which then requires
12461 fewer or smaller stubs on the next iteration. */
12466 unsigned int bfd_indx
;
12467 struct map_stub
*group
;
12469 htab
->stub_iteration
+= 1;
12471 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12473 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12475 Elf_Internal_Shdr
*symtab_hdr
;
12477 Elf_Internal_Sym
*local_syms
= NULL
;
12479 if (!is_ppc64_elf (input_bfd
))
12482 /* We'll need the symbol table in a second. */
12483 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12484 if (symtab_hdr
->sh_info
== 0)
12487 /* Walk over each section attached to the input bfd. */
12488 for (section
= input_bfd
->sections
;
12490 section
= section
->next
)
12492 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12494 /* If there aren't any relocs, then there's nothing more
12496 if ((section
->flags
& SEC_RELOC
) == 0
12497 || (section
->flags
& SEC_ALLOC
) == 0
12498 || (section
->flags
& SEC_LOAD
) == 0
12499 || (section
->flags
& SEC_CODE
) == 0
12500 || section
->reloc_count
== 0)
12503 /* If this section is a link-once section that will be
12504 discarded, then don't create any stubs. */
12505 if (section
->output_section
== NULL
12506 || section
->output_section
->owner
!= info
->output_bfd
)
12509 /* Get the relocs. */
12511 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12512 info
->keep_memory
);
12513 if (internal_relocs
== NULL
)
12514 goto error_ret_free_local
;
12516 /* Now examine each relocation. */
12517 irela
= internal_relocs
;
12518 irelaend
= irela
+ section
->reloc_count
;
12519 for (; irela
< irelaend
; irela
++)
12521 enum elf_ppc64_reloc_type r_type
;
12522 unsigned int r_indx
;
12523 enum ppc_stub_type stub_type
;
12524 struct ppc_stub_hash_entry
*stub_entry
;
12525 asection
*sym_sec
, *code_sec
;
12526 bfd_vma sym_value
, code_value
;
12527 bfd_vma destination
;
12528 unsigned long local_off
;
12529 bfd_boolean ok_dest
;
12530 struct ppc_link_hash_entry
*hash
;
12531 struct ppc_link_hash_entry
*fdh
;
12532 struct elf_link_hash_entry
*h
;
12533 Elf_Internal_Sym
*sym
;
12535 const asection
*id_sec
;
12536 struct _opd_sec_data
*opd
;
12537 struct plt_entry
*plt_ent
;
12539 r_type
= ELF64_R_TYPE (irela
->r_info
);
12540 r_indx
= ELF64_R_SYM (irela
->r_info
);
12542 if (r_type
>= R_PPC64_max
)
12544 bfd_set_error (bfd_error_bad_value
);
12545 goto error_ret_free_internal
;
12548 /* Only look for stubs on branch instructions. */
12549 if (r_type
!= R_PPC64_REL24
12550 && r_type
!= R_PPC64_REL14
12551 && r_type
!= R_PPC64_REL14_BRTAKEN
12552 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12555 /* Now determine the call target, its name, value,
12557 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12558 r_indx
, input_bfd
))
12559 goto error_ret_free_internal
;
12560 hash
= (struct ppc_link_hash_entry
*) h
;
12567 sym_value
= sym
->st_value
;
12568 if (sym_sec
!= NULL
12569 && sym_sec
->output_section
!= NULL
)
12572 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12573 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12575 sym_value
= hash
->elf
.root
.u
.def
.value
;
12576 if (sym_sec
->output_section
!= NULL
)
12579 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12580 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12582 /* Recognise an old ABI func code entry sym, and
12583 use the func descriptor sym instead if it is
12585 if (hash
->elf
.root
.root
.string
[0] == '.'
12586 && hash
->oh
!= NULL
)
12588 fdh
= ppc_follow_link (hash
->oh
);
12589 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12590 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12592 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12593 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12594 if (sym_sec
->output_section
!= NULL
)
12603 bfd_set_error (bfd_error_bad_value
);
12604 goto error_ret_free_internal
;
12611 sym_value
+= irela
->r_addend
;
12612 destination
= (sym_value
12613 + sym_sec
->output_offset
12614 + sym_sec
->output_section
->vma
);
12615 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12620 code_sec
= sym_sec
;
12621 code_value
= sym_value
;
12622 opd
= get_opd_info (sym_sec
);
12627 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12629 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12632 code_value
+= adjust
;
12633 sym_value
+= adjust
;
12635 dest
= opd_entry_value (sym_sec
, sym_value
,
12636 &code_sec
, &code_value
, FALSE
);
12637 if (dest
!= (bfd_vma
) -1)
12639 destination
= dest
;
12642 /* Fixup old ABI sym to point at code
12644 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12645 hash
->elf
.root
.u
.def
.section
= code_sec
;
12646 hash
->elf
.root
.u
.def
.value
= code_value
;
12651 /* Determine what (if any) linker stub is needed. */
12653 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12654 &plt_ent
, destination
,
12657 if (stub_type
!= ppc_stub_plt_call
)
12659 /* Check whether we need a TOC adjusting stub.
12660 Since the linker pastes together pieces from
12661 different object files when creating the
12662 _init and _fini functions, it may be that a
12663 call to what looks like a local sym is in
12664 fact a call needing a TOC adjustment. */
12665 if (code_sec
!= NULL
12666 && code_sec
->output_section
!= NULL
12667 && (htab
->sec_info
[code_sec
->id
].toc_off
12668 != htab
->sec_info
[section
->id
].toc_off
)
12669 && (code_sec
->has_toc_reloc
12670 || code_sec
->makes_toc_func_call
))
12671 stub_type
= ppc_stub_long_branch_r2off
;
12674 if (stub_type
== ppc_stub_none
)
12677 /* __tls_get_addr calls might be eliminated. */
12678 if (stub_type
!= ppc_stub_plt_call
12680 && (hash
== htab
->tls_get_addr
12681 || hash
== htab
->tls_get_addr_fd
)
12682 && section
->has_tls_reloc
12683 && irela
!= internal_relocs
)
12685 /* Get tls info. */
12686 unsigned char *tls_mask
;
12688 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12689 irela
- 1, input_bfd
))
12690 goto error_ret_free_internal
;
12691 if (*tls_mask
!= 0)
12695 if (stub_type
== ppc_stub_plt_call
)
12698 && htab
->params
->plt_localentry0
!= 0
12699 && is_elfv2_localentry0 (&hash
->elf
))
12700 htab
->has_plt_localentry0
= 1;
12701 else if (irela
+ 1 < irelaend
12702 && irela
[1].r_offset
== irela
->r_offset
+ 4
12703 && (ELF64_R_TYPE (irela
[1].r_info
)
12704 == R_PPC64_TOCSAVE
))
12706 if (!tocsave_find (htab
, INSERT
,
12707 &local_syms
, irela
+ 1, input_bfd
))
12708 goto error_ret_free_internal
;
12711 stub_type
= ppc_stub_plt_call_r2save
;
12714 /* Support for grouping stub sections. */
12715 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12717 /* Get the name of this stub. */
12718 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12720 goto error_ret_free_internal
;
12722 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12723 stub_name
, FALSE
, FALSE
);
12724 if (stub_entry
!= NULL
)
12726 /* The proper stub has already been created. */
12728 if (stub_type
== ppc_stub_plt_call_r2save
)
12729 stub_entry
->stub_type
= stub_type
;
12733 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12734 if (stub_entry
== NULL
)
12737 error_ret_free_internal
:
12738 if (elf_section_data (section
)->relocs
== NULL
)
12739 free (internal_relocs
);
12740 error_ret_free_local
:
12741 if (local_syms
!= NULL
12742 && (symtab_hdr
->contents
12743 != (unsigned char *) local_syms
))
12748 stub_entry
->stub_type
= stub_type
;
12749 if (stub_type
!= ppc_stub_plt_call
12750 && stub_type
!= ppc_stub_plt_call_r2save
)
12752 stub_entry
->target_value
= code_value
;
12753 stub_entry
->target_section
= code_sec
;
12757 stub_entry
->target_value
= sym_value
;
12758 stub_entry
->target_section
= sym_sec
;
12760 stub_entry
->h
= hash
;
12761 stub_entry
->plt_ent
= plt_ent
;
12762 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12764 if (stub_entry
->h
!= NULL
)
12765 htab
->stub_globals
+= 1;
12768 /* We're done with the internal relocs, free them. */
12769 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12770 free (internal_relocs
);
12773 if (local_syms
!= NULL
12774 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12776 if (!info
->keep_memory
)
12779 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12783 /* We may have added some stubs. Find out the new size of the
12785 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12786 if (group
->stub_sec
!= NULL
)
12788 asection
*stub_sec
= group
->stub_sec
;
12790 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12791 || stub_sec
->rawsize
< stub_sec
->size
)
12792 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12793 stub_sec
->rawsize
= stub_sec
->size
;
12794 stub_sec
->size
= 0;
12795 stub_sec
->reloc_count
= 0;
12796 stub_sec
->flags
&= ~SEC_RELOC
;
12799 htab
->brlt
->size
= 0;
12800 htab
->brlt
->reloc_count
= 0;
12801 htab
->brlt
->flags
&= ~SEC_RELOC
;
12802 if (htab
->relbrlt
!= NULL
)
12803 htab
->relbrlt
->size
= 0;
12805 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12807 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12808 if (group
->needs_save_res
)
12809 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12811 if (info
->emitrelocations
12812 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12814 htab
->glink
->reloc_count
= 1;
12815 htab
->glink
->flags
|= SEC_RELOC
;
12818 if (htab
->glink_eh_frame
!= NULL
12819 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12820 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12822 size_t size
= 0, align
= 4;
12824 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12825 if (group
->stub_sec
!= NULL
)
12826 size
+= stub_eh_frame_size (group
, align
);
12827 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12828 size
+= (24 + align
- 1) & -align
;
12830 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12831 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12832 size
= (size
+ align
- 1) & -align
;
12833 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12834 htab
->glink_eh_frame
->size
= size
;
12837 if (htab
->params
->plt_stub_align
!= 0)
12838 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12839 if (group
->stub_sec
!= NULL
)
12840 group
->stub_sec
->size
= ((group
->stub_sec
->size
12841 + (1 << htab
->params
->plt_stub_align
) - 1)
12842 & -(1 << htab
->params
->plt_stub_align
));
12844 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12845 if (group
->stub_sec
!= NULL
12846 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12847 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12848 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12852 && (htab
->glink_eh_frame
== NULL
12853 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12856 /* Ask the linker to do its stuff. */
12857 (*htab
->params
->layout_sections_again
) ();
12860 if (htab
->glink_eh_frame
!= NULL
12861 && htab
->glink_eh_frame
->size
!= 0)
12864 bfd_byte
*p
, *last_fde
;
12865 size_t last_fde_len
, size
, align
, pad
;
12866 struct map_stub
*group
;
12868 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12871 htab
->glink_eh_frame
->contents
= p
;
12875 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12876 /* CIE length (rewrite in case little-endian). */
12877 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12878 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12879 p
+= last_fde_len
+ 4;
12881 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12882 if (group
->stub_sec
!= NULL
)
12885 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12887 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12890 val
= p
- htab
->glink_eh_frame
->contents
;
12891 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12893 /* Offset to stub section, written later. */
12895 /* stub section size. */
12896 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12898 /* Augmentation. */
12900 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12902 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12904 /* This FDE needs more than just the default.
12905 Describe __tls_get_addr_opt stub LR. */
12907 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12908 else if (to_bctrl
< 256)
12910 *p
++ = DW_CFA_advance_loc1
;
12913 else if (to_bctrl
< 65536)
12915 *p
++ = DW_CFA_advance_loc2
;
12916 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12921 *p
++ = DW_CFA_advance_loc4
;
12922 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12925 *p
++ = DW_CFA_offset_extended_sf
;
12927 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12928 *p
++ = DW_CFA_advance_loc
+ 4;
12929 *p
++ = DW_CFA_restore_extended
;
12933 p
= last_fde
+ last_fde_len
+ 4;
12935 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12938 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12940 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12943 val
= p
- htab
->glink_eh_frame
->contents
;
12944 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12946 /* Offset to .glink, written later. */
12949 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12951 /* Augmentation. */
12954 *p
++ = DW_CFA_advance_loc
+ 1;
12955 *p
++ = DW_CFA_register
;
12957 *p
++ = htab
->opd_abi
? 12 : 0;
12958 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12959 *p
++ = DW_CFA_restore_extended
;
12961 p
+= ((24 + align
- 1) & -align
) - 24;
12963 /* Subsume any padding into the last FDE if user .eh_frame
12964 sections are aligned more than glink_eh_frame. Otherwise any
12965 zero padding will be seen as a terminator. */
12966 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12967 size
= p
- htab
->glink_eh_frame
->contents
;
12968 pad
= ((size
+ align
- 1) & -align
) - size
;
12969 htab
->glink_eh_frame
->size
= size
+ pad
;
12970 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12973 maybe_strip_output (info
, htab
->brlt
);
12974 if (htab
->glink_eh_frame
!= NULL
)
12975 maybe_strip_output (info
, htab
->glink_eh_frame
);
12980 /* Called after we have determined section placement. If sections
12981 move, we'll be called again. Provide a value for TOCstart. */
12984 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12987 bfd_vma TOCstart
, adjust
;
12991 struct elf_link_hash_entry
*h
;
12992 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12994 if (is_elf_hash_table (htab
)
12995 && htab
->hgot
!= NULL
)
12999 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
13000 if (is_elf_hash_table (htab
))
13004 && h
->root
.type
== bfd_link_hash_defined
13005 && !h
->root
.linker_def
13006 && (!is_elf_hash_table (htab
)
13007 || h
->def_regular
))
13009 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
13010 + h
->root
.u
.def
.section
->output_offset
13011 + h
->root
.u
.def
.section
->output_section
->vma
);
13012 _bfd_set_gp_value (obfd
, TOCstart
);
13017 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13018 order. The TOC starts where the first of these sections starts. */
13019 s
= bfd_get_section_by_name (obfd
, ".got");
13020 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13021 s
= bfd_get_section_by_name (obfd
, ".toc");
13022 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13023 s
= bfd_get_section_by_name (obfd
, ".tocbss");
13024 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13025 s
= bfd_get_section_by_name (obfd
, ".plt");
13026 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13028 /* This may happen for
13029 o references to TOC base (SYM@toc / TOC[tc0]) without a
13031 o bad linker script
13032 o --gc-sections and empty TOC sections
13034 FIXME: Warn user? */
13036 /* Look for a likely section. We probably won't even be
13038 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13039 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
13041 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13044 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13045 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
13046 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13049 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13050 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
13054 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13055 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
13061 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
13063 /* Force alignment. */
13064 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
13065 TOCstart
-= adjust
;
13066 _bfd_set_gp_value (obfd
, TOCstart
);
13068 if (info
!= NULL
&& s
!= NULL
)
13070 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13074 if (htab
->elf
.hgot
!= NULL
)
13076 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
13077 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
13082 struct bfd_link_hash_entry
*bh
= NULL
;
13083 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
13084 s
, TOC_BASE_OFF
- adjust
,
13085 NULL
, FALSE
, FALSE
, &bh
);
13091 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13092 write out any global entry stubs. */
13095 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
13097 struct bfd_link_info
*info
;
13098 struct ppc_link_hash_table
*htab
;
13099 struct plt_entry
*pent
;
13102 if (h
->root
.type
== bfd_link_hash_indirect
)
13105 if (!h
->pointer_equality_needed
)
13108 if (h
->def_regular
)
13112 htab
= ppc_hash_table (info
);
13117 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13118 if (pent
->plt
.offset
!= (bfd_vma
) -1
13119 && pent
->addend
== 0)
13125 p
= s
->contents
+ h
->root
.u
.def
.value
;
13126 plt
= htab
->elf
.splt
;
13127 if (!htab
->elf
.dynamic_sections_created
13128 || h
->dynindx
== -1)
13129 plt
= htab
->elf
.iplt
;
13130 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13131 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13133 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13135 info
->callbacks
->einfo
13136 (_("%P: linkage table error against `%T'\n"),
13137 h
->root
.root
.string
);
13138 bfd_set_error (bfd_error_bad_value
);
13139 htab
->stub_error
= TRUE
;
13142 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13143 if (htab
->params
->emit_stub_syms
)
13145 size_t len
= strlen (h
->root
.root
.string
);
13146 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13151 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13152 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13155 if (h
->root
.type
== bfd_link_hash_new
)
13157 h
->root
.type
= bfd_link_hash_defined
;
13158 h
->root
.u
.def
.section
= s
;
13159 h
->root
.u
.def
.value
= p
- s
->contents
;
13160 h
->ref_regular
= 1;
13161 h
->def_regular
= 1;
13162 h
->ref_regular_nonweak
= 1;
13163 h
->forced_local
= 1;
13165 h
->root
.linker_def
= 1;
13169 if (PPC_HA (off
) != 0)
13171 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13174 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13176 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13178 bfd_put_32 (s
->owner
, BCTR
, p
);
13184 /* Build all the stubs associated with the current output file.
13185 The stubs are kept in a hash table attached to the main linker
13186 hash table. This function is called via gldelf64ppc_finish. */
13189 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13192 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13193 struct map_stub
*group
;
13194 asection
*stub_sec
;
13196 int stub_sec_count
= 0;
13201 /* Allocate memory to hold the linker stubs. */
13202 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13203 if ((stub_sec
= group
->stub_sec
) != NULL
13204 && stub_sec
->size
!= 0)
13206 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13207 if (stub_sec
->contents
== NULL
)
13209 stub_sec
->size
= 0;
13212 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13217 /* Build the .glink plt call stub. */
13218 if (htab
->params
->emit_stub_syms
)
13220 struct elf_link_hash_entry
*h
;
13221 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13222 TRUE
, FALSE
, FALSE
);
13225 if (h
->root
.type
== bfd_link_hash_new
)
13227 h
->root
.type
= bfd_link_hash_defined
;
13228 h
->root
.u
.def
.section
= htab
->glink
;
13229 h
->root
.u
.def
.value
= 8;
13230 h
->ref_regular
= 1;
13231 h
->def_regular
= 1;
13232 h
->ref_regular_nonweak
= 1;
13233 h
->forced_local
= 1;
13235 h
->root
.linker_def
= 1;
13238 plt0
= (htab
->elf
.splt
->output_section
->vma
13239 + htab
->elf
.splt
->output_offset
13241 if (info
->emitrelocations
)
13243 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13246 r
->r_offset
= (htab
->glink
->output_offset
13247 + htab
->glink
->output_section
->vma
);
13248 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13249 r
->r_addend
= plt0
;
13251 p
= htab
->glink
->contents
;
13252 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13253 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13257 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13259 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13261 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13263 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13265 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13267 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13269 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13271 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13273 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13275 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13280 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13282 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13284 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13286 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13288 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13290 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13292 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13294 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13296 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13298 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13300 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13302 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13304 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13307 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13309 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13311 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13315 /* Build the .glink lazy link call stubs. */
13317 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13323 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13328 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13330 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13335 bfd_put_32 (htab
->glink
->owner
,
13336 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13341 /* Build .glink global entry stubs. */
13342 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13343 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13346 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13348 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13350 if (htab
->brlt
->contents
== NULL
)
13353 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13355 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13356 htab
->relbrlt
->size
);
13357 if (htab
->relbrlt
->contents
== NULL
)
13361 /* Build the stubs as directed by the stub hash table. */
13362 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13364 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13365 if (group
->needs_save_res
)
13367 stub_sec
= group
->stub_sec
;
13368 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13370 if (htab
->params
->emit_stub_syms
)
13374 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13375 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13378 stub_sec
->size
+= htab
->sfpr
->size
;
13381 if (htab
->relbrlt
!= NULL
)
13382 htab
->relbrlt
->reloc_count
= 0;
13384 if (htab
->params
->plt_stub_align
!= 0)
13385 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13386 if ((stub_sec
= group
->stub_sec
) != NULL
)
13387 stub_sec
->size
= ((stub_sec
->size
13388 + (1 << htab
->params
->plt_stub_align
) - 1)
13389 & -(1 << htab
->params
->plt_stub_align
));
13391 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13392 if ((stub_sec
= group
->stub_sec
) != NULL
)
13394 stub_sec_count
+= 1;
13395 if (stub_sec
->rawsize
!= stub_sec
->size
13396 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13397 || stub_sec
->rawsize
< stub_sec
->size
))
13401 /* Note that the glink_eh_frame check here is not only testing that
13402 the generated size matched the calculated size but also that
13403 bfd_elf_discard_info didn't make any changes to the section. */
13405 || (htab
->glink_eh_frame
!= NULL
13406 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13408 htab
->stub_error
= TRUE
;
13409 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13412 if (htab
->stub_error
)
13417 *stats
= bfd_malloc (500);
13418 if (*stats
== NULL
)
13421 sprintf (*stats
, _("linker stubs in %u group%s\n"
13423 " toc adjust %lu\n"
13424 " long branch %lu\n"
13425 " long toc adj %lu\n"
13427 " plt call toc %lu\n"
13428 " global entry %lu"),
13430 stub_sec_count
== 1 ? "" : "s",
13431 htab
->stub_count
[ppc_stub_long_branch
- 1],
13432 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13433 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13434 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13435 htab
->stub_count
[ppc_stub_plt_call
- 1],
13436 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13437 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13442 /* What to do when ld finds relocations against symbols defined in
13443 discarded sections. */
13445 static unsigned int
13446 ppc64_elf_action_discarded (asection
*sec
)
13448 if (strcmp (".opd", sec
->name
) == 0)
13451 if (strcmp (".toc", sec
->name
) == 0)
13454 if (strcmp (".toc1", sec
->name
) == 0)
13457 return _bfd_elf_default_action_discarded (sec
);
13460 /* The RELOCATE_SECTION function is called by the ELF backend linker
13461 to handle the relocations for a section.
13463 The relocs are always passed as Rela structures; if the section
13464 actually uses Rel structures, the r_addend field will always be
13467 This function is responsible for adjust the section contents as
13468 necessary, and (if using Rela relocs and generating a
13469 relocatable output file) adjusting the reloc addend as
13472 This function does not have to worry about setting the reloc
13473 address or the reloc symbol index.
13475 LOCAL_SYMS is a pointer to the swapped in local symbols.
13477 LOCAL_SECTIONS is an array giving the section in the input file
13478 corresponding to the st_shndx field of each local symbol.
13480 The global hash table entry for the global symbols can be found
13481 via elf_sym_hashes (input_bfd).
13483 When generating relocatable output, this function must handle
13484 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13485 going to be the section symbol corresponding to the output
13486 section, which means that the addend must be adjusted
13490 ppc64_elf_relocate_section (bfd
*output_bfd
,
13491 struct bfd_link_info
*info
,
13493 asection
*input_section
,
13494 bfd_byte
*contents
,
13495 Elf_Internal_Rela
*relocs
,
13496 Elf_Internal_Sym
*local_syms
,
13497 asection
**local_sections
)
13499 struct ppc_link_hash_table
*htab
;
13500 Elf_Internal_Shdr
*symtab_hdr
;
13501 struct elf_link_hash_entry
**sym_hashes
;
13502 Elf_Internal_Rela
*rel
;
13503 Elf_Internal_Rela
*wrel
;
13504 Elf_Internal_Rela
*relend
;
13505 Elf_Internal_Rela outrel
;
13507 struct got_entry
**local_got_ents
;
13509 bfd_boolean ret
= TRUE
;
13510 bfd_boolean is_opd
;
13511 /* Assume 'at' branch hints. */
13512 bfd_boolean is_isa_v2
= TRUE
;
13513 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13515 /* Initialize howto table if needed. */
13516 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13519 htab
= ppc_hash_table (info
);
13523 /* Don't relocate stub sections. */
13524 if (input_section
->owner
== htab
->params
->stub_bfd
)
13527 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13529 local_got_ents
= elf_local_got_ents (input_bfd
);
13530 TOCstart
= elf_gp (output_bfd
);
13531 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13532 sym_hashes
= elf_sym_hashes (input_bfd
);
13533 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13535 rel
= wrel
= relocs
;
13536 relend
= relocs
+ input_section
->reloc_count
;
13537 for (; rel
< relend
; wrel
++, rel
++)
13539 enum elf_ppc64_reloc_type r_type
;
13541 bfd_reloc_status_type r
;
13542 Elf_Internal_Sym
*sym
;
13544 struct elf_link_hash_entry
*h_elf
;
13545 struct ppc_link_hash_entry
*h
;
13546 struct ppc_link_hash_entry
*fdh
;
13547 const char *sym_name
;
13548 unsigned long r_symndx
, toc_symndx
;
13549 bfd_vma toc_addend
;
13550 unsigned char tls_mask
, tls_gd
, tls_type
;
13551 unsigned char sym_type
;
13552 bfd_vma relocation
;
13553 bfd_boolean unresolved_reloc
;
13554 bfd_boolean warned
;
13555 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13558 struct ppc_stub_hash_entry
*stub_entry
;
13559 bfd_vma max_br_offset
;
13561 Elf_Internal_Rela orig_rel
;
13562 reloc_howto_type
*howto
;
13563 struct reloc_howto_struct alt_howto
;
13568 r_type
= ELF64_R_TYPE (rel
->r_info
);
13569 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13571 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13572 symbol of the previous ADDR64 reloc. The symbol gives us the
13573 proper TOC base to use. */
13574 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13576 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13578 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13584 unresolved_reloc
= FALSE
;
13587 if (r_symndx
< symtab_hdr
->sh_info
)
13589 /* It's a local symbol. */
13590 struct _opd_sec_data
*opd
;
13592 sym
= local_syms
+ r_symndx
;
13593 sec
= local_sections
[r_symndx
];
13594 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13595 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13596 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13597 opd
= get_opd_info (sec
);
13598 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13600 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13606 /* If this is a relocation against the opd section sym
13607 and we have edited .opd, adjust the reloc addend so
13608 that ld -r and ld --emit-relocs output is correct.
13609 If it is a reloc against some other .opd symbol,
13610 then the symbol value will be adjusted later. */
13611 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13612 rel
->r_addend
+= adjust
;
13614 relocation
+= adjust
;
13620 bfd_boolean ignored
;
13622 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13623 r_symndx
, symtab_hdr
, sym_hashes
,
13624 h_elf
, sec
, relocation
,
13625 unresolved_reloc
, warned
, ignored
);
13626 sym_name
= h_elf
->root
.root
.string
;
13627 sym_type
= h_elf
->type
;
13629 && sec
->owner
== output_bfd
13630 && strcmp (sec
->name
, ".opd") == 0)
13632 /* This is a symbol defined in a linker script. All
13633 such are defined in output sections, even those
13634 defined by simple assignment from a symbol defined in
13635 an input section. Transfer the symbol to an
13636 appropriate input .opd section, so that a branch to
13637 this symbol will be mapped to the location specified
13638 by the opd entry. */
13639 struct bfd_link_order
*lo
;
13640 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13641 if (lo
->type
== bfd_indirect_link_order
)
13643 asection
*isec
= lo
->u
.indirect
.section
;
13644 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13645 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13648 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13649 h_elf
->root
.u
.def
.section
= isec
;
13656 h
= (struct ppc_link_hash_entry
*) h_elf
;
13658 if (sec
!= NULL
&& discarded_section (sec
))
13660 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13661 input_bfd
, input_section
,
13662 contents
+ rel
->r_offset
);
13663 wrel
->r_offset
= rel
->r_offset
;
13665 wrel
->r_addend
= 0;
13667 /* For ld -r, remove relocations in debug sections against
13668 sections defined in discarded sections. Not done for
13669 non-debug to preserve relocs in .eh_frame which the
13670 eh_frame editing code expects to be present. */
13671 if (bfd_link_relocatable (info
)
13672 && (input_section
->flags
& SEC_DEBUGGING
))
13678 if (bfd_link_relocatable (info
))
13681 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13683 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13684 sec
= bfd_abs_section_ptr
;
13685 unresolved_reloc
= FALSE
;
13688 /* TLS optimizations. Replace instruction sequences and relocs
13689 based on information we collected in tls_optimize. We edit
13690 RELOCS so that --emit-relocs will output something sensible
13691 for the final instruction stream. */
13696 tls_mask
= h
->tls_mask
;
13697 else if (local_got_ents
!= NULL
)
13699 struct plt_entry
**local_plt
= (struct plt_entry
**)
13700 (local_got_ents
+ symtab_hdr
->sh_info
);
13701 unsigned char *lgot_masks
= (unsigned char *)
13702 (local_plt
+ symtab_hdr
->sh_info
);
13703 tls_mask
= lgot_masks
[r_symndx
];
13706 && (r_type
== R_PPC64_TLS
13707 || r_type
== R_PPC64_TLSGD
13708 || r_type
== R_PPC64_TLSLD
))
13710 /* Check for toc tls entries. */
13711 unsigned char *toc_tls
;
13713 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13714 &local_syms
, rel
, input_bfd
))
13718 tls_mask
= *toc_tls
;
13721 /* Check that tls relocs are used with tls syms, and non-tls
13722 relocs are used with non-tls syms. */
13723 if (r_symndx
!= STN_UNDEF
13724 && r_type
!= R_PPC64_NONE
13726 || h
->elf
.root
.type
== bfd_link_hash_defined
13727 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13728 && (IS_PPC64_TLS_RELOC (r_type
)
13729 != (sym_type
== STT_TLS
13730 || (sym_type
== STT_SECTION
13731 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13734 && (r_type
== R_PPC64_TLS
13735 || r_type
== R_PPC64_TLSGD
13736 || r_type
== R_PPC64_TLSLD
))
13737 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13740 info
->callbacks
->einfo
13741 (!IS_PPC64_TLS_RELOC (r_type
)
13742 /* xgettext:c-format */
13743 ? _("%H: %s used with TLS symbol `%T'\n")
13744 /* xgettext:c-format */
13745 : _("%H: %s used with non-TLS symbol `%T'\n"),
13746 input_bfd
, input_section
, rel
->r_offset
,
13747 ppc64_elf_howto_table
[r_type
]->name
,
13751 /* Ensure reloc mapping code below stays sane. */
13752 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13753 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13754 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13755 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13756 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13757 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13758 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13759 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13760 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13761 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13769 case R_PPC64_LO_DS_OPT
:
13770 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13771 if ((insn
& (0x3f << 26)) != 58u << 26)
13773 insn
+= (14u << 26) - (58u << 26);
13774 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13775 r_type
= R_PPC64_TOC16_LO
;
13776 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13779 case R_PPC64_TOC16
:
13780 case R_PPC64_TOC16_LO
:
13781 case R_PPC64_TOC16_DS
:
13782 case R_PPC64_TOC16_LO_DS
:
13784 /* Check for toc tls entries. */
13785 unsigned char *toc_tls
;
13788 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13789 &local_syms
, rel
, input_bfd
);
13795 tls_mask
= *toc_tls
;
13796 if (r_type
== R_PPC64_TOC16_DS
13797 || r_type
== R_PPC64_TOC16_LO_DS
)
13800 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13805 /* If we found a GD reloc pair, then we might be
13806 doing a GD->IE transition. */
13809 tls_gd
= TLS_TPRELGD
;
13810 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13813 else if (retval
== 3)
13815 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13823 case R_PPC64_GOT_TPREL16_HI
:
13824 case R_PPC64_GOT_TPREL16_HA
:
13826 && (tls_mask
& TLS_TPREL
) == 0)
13828 rel
->r_offset
-= d_offset
;
13829 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13830 r_type
= R_PPC64_NONE
;
13831 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13835 case R_PPC64_GOT_TPREL16_DS
:
13836 case R_PPC64_GOT_TPREL16_LO_DS
:
13838 && (tls_mask
& TLS_TPREL
) == 0)
13841 insn
= bfd_get_32 (input_bfd
,
13842 contents
+ rel
->r_offset
- d_offset
);
13844 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13845 bfd_put_32 (input_bfd
, insn
,
13846 contents
+ rel
->r_offset
- d_offset
);
13847 r_type
= R_PPC64_TPREL16_HA
;
13848 if (toc_symndx
!= 0)
13850 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13851 rel
->r_addend
= toc_addend
;
13852 /* We changed the symbol. Start over in order to
13853 get h, sym, sec etc. right. */
13857 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13863 && (tls_mask
& TLS_TPREL
) == 0)
13865 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13866 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13869 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13870 /* Was PPC64_TLS which sits on insn boundary, now
13871 PPC64_TPREL16_LO which is at low-order half-word. */
13872 rel
->r_offset
+= d_offset
;
13873 r_type
= R_PPC64_TPREL16_LO
;
13874 if (toc_symndx
!= 0)
13876 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13877 rel
->r_addend
= toc_addend
;
13878 /* We changed the symbol. Start over in order to
13879 get h, sym, sec etc. right. */
13883 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13887 case R_PPC64_GOT_TLSGD16_HI
:
13888 case R_PPC64_GOT_TLSGD16_HA
:
13889 tls_gd
= TLS_TPRELGD
;
13890 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13894 case R_PPC64_GOT_TLSLD16_HI
:
13895 case R_PPC64_GOT_TLSLD16_HA
:
13896 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13899 if ((tls_mask
& tls_gd
) != 0)
13900 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13901 + R_PPC64_GOT_TPREL16_DS
);
13904 rel
->r_offset
-= d_offset
;
13905 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13906 r_type
= R_PPC64_NONE
;
13908 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13912 case R_PPC64_GOT_TLSGD16
:
13913 case R_PPC64_GOT_TLSGD16_LO
:
13914 tls_gd
= TLS_TPRELGD
;
13915 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13919 case R_PPC64_GOT_TLSLD16
:
13920 case R_PPC64_GOT_TLSLD16_LO
:
13921 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13923 unsigned int insn1
, insn2
;
13927 offset
= (bfd_vma
) -1;
13928 /* If not using the newer R_PPC64_TLSGD/LD to mark
13929 __tls_get_addr calls, we must trust that the call
13930 stays with its arg setup insns, ie. that the next
13931 reloc is the __tls_get_addr call associated with
13932 the current reloc. Edit both insns. */
13933 if (input_section
->has_tls_get_addr_call
13934 && rel
+ 1 < relend
13935 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13936 htab
->tls_get_addr
,
13937 htab
->tls_get_addr_fd
))
13938 offset
= rel
[1].r_offset
;
13939 /* We read the low GOT_TLS (or TOC16) insn because we
13940 need to keep the destination reg. It may be
13941 something other than the usual r3, and moved to r3
13942 before the call by intervening code. */
13943 insn1
= bfd_get_32 (input_bfd
,
13944 contents
+ rel
->r_offset
- d_offset
);
13945 if ((tls_mask
& tls_gd
) != 0)
13948 insn1
&= (0x1f << 21) | (0x1f << 16);
13949 insn1
|= 58 << 26; /* ld */
13950 insn2
= 0x7c636a14; /* add 3,3,13 */
13951 if (offset
!= (bfd_vma
) -1)
13952 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13953 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13954 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13955 + R_PPC64_GOT_TPREL16_DS
);
13957 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13958 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13963 insn1
&= 0x1f << 21;
13964 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13965 insn2
= 0x38630000; /* addi 3,3,0 */
13968 /* Was an LD reloc. */
13970 sec
= local_sections
[toc_symndx
];
13972 r_symndx
< symtab_hdr
->sh_info
;
13974 if (local_sections
[r_symndx
] == sec
)
13976 if (r_symndx
>= symtab_hdr
->sh_info
)
13977 r_symndx
= STN_UNDEF
;
13978 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13979 if (r_symndx
!= STN_UNDEF
)
13980 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13981 + sec
->output_offset
13982 + sec
->output_section
->vma
);
13984 else if (toc_symndx
!= 0)
13986 r_symndx
= toc_symndx
;
13987 rel
->r_addend
= toc_addend
;
13989 r_type
= R_PPC64_TPREL16_HA
;
13990 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13991 if (offset
!= (bfd_vma
) -1)
13993 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13994 R_PPC64_TPREL16_LO
);
13995 rel
[1].r_offset
= offset
+ d_offset
;
13996 rel
[1].r_addend
= rel
->r_addend
;
13999 bfd_put_32 (input_bfd
, insn1
,
14000 contents
+ rel
->r_offset
- d_offset
);
14001 if (offset
!= (bfd_vma
) -1)
14002 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14003 if ((tls_mask
& tls_gd
) == 0
14004 && (tls_gd
== 0 || toc_symndx
!= 0))
14006 /* We changed the symbol. Start over in order
14007 to get h, sym, sec etc. right. */
14013 case R_PPC64_TLSGD
:
14014 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
14016 unsigned int insn2
;
14017 bfd_vma offset
= rel
->r_offset
;
14019 if ((tls_mask
& TLS_TPRELGD
) != 0)
14022 r_type
= R_PPC64_NONE
;
14023 insn2
= 0x7c636a14; /* add 3,3,13 */
14028 if (toc_symndx
!= 0)
14030 r_symndx
= toc_symndx
;
14031 rel
->r_addend
= toc_addend
;
14033 r_type
= R_PPC64_TPREL16_LO
;
14034 rel
->r_offset
= offset
+ d_offset
;
14035 insn2
= 0x38630000; /* addi 3,3,0 */
14037 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14038 /* Zap the reloc on the _tls_get_addr call too. */
14039 BFD_ASSERT (offset
== rel
[1].r_offset
);
14040 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14041 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14042 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
14047 case R_PPC64_TLSLD
:
14048 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
14050 unsigned int insn2
;
14051 bfd_vma offset
= rel
->r_offset
;
14054 sec
= local_sections
[toc_symndx
];
14056 r_symndx
< symtab_hdr
->sh_info
;
14058 if (local_sections
[r_symndx
] == sec
)
14060 if (r_symndx
>= symtab_hdr
->sh_info
)
14061 r_symndx
= STN_UNDEF
;
14062 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14063 if (r_symndx
!= STN_UNDEF
)
14064 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
14065 + sec
->output_offset
14066 + sec
->output_section
->vma
);
14068 r_type
= R_PPC64_TPREL16_LO
;
14069 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14070 rel
->r_offset
= offset
+ d_offset
;
14071 /* Zap the reloc on the _tls_get_addr call too. */
14072 BFD_ASSERT (offset
== rel
[1].r_offset
);
14073 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14074 insn2
= 0x38630000; /* addi 3,3,0 */
14075 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14080 case R_PPC64_DTPMOD64
:
14081 if (rel
+ 1 < relend
14082 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
14083 && rel
[1].r_offset
== rel
->r_offset
+ 8)
14085 if ((tls_mask
& TLS_GD
) == 0)
14087 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
14088 if ((tls_mask
& TLS_TPRELGD
) != 0)
14089 r_type
= R_PPC64_TPREL64
;
14092 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14093 r_type
= R_PPC64_NONE
;
14095 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14100 if ((tls_mask
& TLS_LD
) == 0)
14102 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14103 r_type
= R_PPC64_NONE
;
14104 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14109 case R_PPC64_TPREL64
:
14110 if ((tls_mask
& TLS_TPREL
) == 0)
14112 r_type
= R_PPC64_NONE
;
14113 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14117 case R_PPC64_ENTRY
:
14118 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14119 if (!bfd_link_pic (info
)
14120 && !info
->traditional_format
14121 && relocation
+ 0x80008000 <= 0xffffffff)
14123 unsigned int insn1
, insn2
;
14125 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14126 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14127 if ((insn1
& ~0xfffc) == LD_R2_0R12
14128 && insn2
== ADD_R2_R2_R12
)
14130 bfd_put_32 (input_bfd
,
14131 LIS_R2
+ PPC_HA (relocation
),
14132 contents
+ rel
->r_offset
);
14133 bfd_put_32 (input_bfd
,
14134 ADDI_R2_R2
+ PPC_LO (relocation
),
14135 contents
+ rel
->r_offset
+ 4);
14140 relocation
-= (rel
->r_offset
14141 + input_section
->output_offset
14142 + input_section
->output_section
->vma
);
14143 if (relocation
+ 0x80008000 <= 0xffffffff)
14145 unsigned int insn1
, insn2
;
14147 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14148 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14149 if ((insn1
& ~0xfffc) == LD_R2_0R12
14150 && insn2
== ADD_R2_R2_R12
)
14152 bfd_put_32 (input_bfd
,
14153 ADDIS_R2_R12
+ PPC_HA (relocation
),
14154 contents
+ rel
->r_offset
);
14155 bfd_put_32 (input_bfd
,
14156 ADDI_R2_R2
+ PPC_LO (relocation
),
14157 contents
+ rel
->r_offset
+ 4);
14163 case R_PPC64_REL16_HA
:
14164 /* If we are generating a non-PIC executable, edit
14165 . 0: addis 2,12,.TOC.-0b@ha
14166 . addi 2,2,.TOC.-0b@l
14167 used by ELFv2 global entry points to set up r2, to
14170 if .TOC. is in range. */
14171 if (!bfd_link_pic (info
)
14172 && !info
->traditional_format
14174 && rel
->r_addend
== d_offset
14175 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14176 && rel
+ 1 < relend
14177 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14178 && rel
[1].r_offset
== rel
->r_offset
+ 4
14179 && rel
[1].r_addend
== rel
->r_addend
+ 4
14180 && relocation
+ 0x80008000 <= 0xffffffff)
14182 unsigned int insn1
, insn2
;
14183 bfd_vma offset
= rel
->r_offset
- d_offset
;
14184 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14185 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14186 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14187 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14189 r_type
= R_PPC64_ADDR16_HA
;
14190 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14191 rel
->r_addend
-= d_offset
;
14192 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14193 rel
[1].r_addend
-= d_offset
+ 4;
14194 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14200 /* Handle other relocations that tweak non-addend part of insn. */
14202 max_br_offset
= 1 << 25;
14203 addend
= rel
->r_addend
;
14204 reloc_dest
= DEST_NORMAL
;
14210 case R_PPC64_TOCSAVE
:
14211 if (relocation
+ addend
== (rel
->r_offset
14212 + input_section
->output_offset
14213 + input_section
->output_section
->vma
)
14214 && tocsave_find (htab
, NO_INSERT
,
14215 &local_syms
, rel
, input_bfd
))
14217 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14219 || insn
== CROR_151515
|| insn
== CROR_313131
)
14220 bfd_put_32 (input_bfd
,
14221 STD_R2_0R1
+ STK_TOC (htab
),
14222 contents
+ rel
->r_offset
);
14226 /* Branch taken prediction relocations. */
14227 case R_PPC64_ADDR14_BRTAKEN
:
14228 case R_PPC64_REL14_BRTAKEN
:
14229 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14230 /* Fall through. */
14232 /* Branch not taken prediction relocations. */
14233 case R_PPC64_ADDR14_BRNTAKEN
:
14234 case R_PPC64_REL14_BRNTAKEN
:
14235 insn
|= bfd_get_32 (input_bfd
,
14236 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14237 /* Fall through. */
14239 case R_PPC64_REL14
:
14240 max_br_offset
= 1 << 15;
14241 /* Fall through. */
14243 case R_PPC64_REL24
:
14244 /* Calls to functions with a different TOC, such as calls to
14245 shared objects, need to alter the TOC pointer. This is
14246 done using a linkage stub. A REL24 branching to these
14247 linkage stubs needs to be followed by a nop, as the nop
14248 will be replaced with an instruction to restore the TOC
14253 && h
->oh
->is_func_descriptor
)
14254 fdh
= ppc_follow_link (h
->oh
);
14255 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14257 if (stub_entry
!= NULL
14258 && (stub_entry
->stub_type
== ppc_stub_plt_call
14259 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14260 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14261 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14263 bfd_boolean can_plt_call
= FALSE
;
14265 if (stub_entry
->stub_type
== ppc_stub_plt_call
14267 && htab
->params
->plt_localentry0
!= 0
14268 && is_elfv2_localentry0 (&h
->elf
))
14270 /* The function doesn't use or change r2. */
14271 can_plt_call
= TRUE
;
14274 /* All of these stubs may modify r2, so there must be a
14275 branch and link followed by a nop. The nop is
14276 replaced by an insn to restore r2. */
14277 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14281 br
= bfd_get_32 (input_bfd
,
14282 contents
+ rel
->r_offset
);
14287 nop
= bfd_get_32 (input_bfd
,
14288 contents
+ rel
->r_offset
+ 4);
14290 || nop
== CROR_151515
|| nop
== CROR_313131
)
14293 && (h
== htab
->tls_get_addr_fd
14294 || h
== htab
->tls_get_addr
)
14295 && htab
->params
->tls_get_addr_opt
)
14297 /* Special stub used, leave nop alone. */
14300 bfd_put_32 (input_bfd
,
14301 LD_R2_0R1
+ STK_TOC (htab
),
14302 contents
+ rel
->r_offset
+ 4);
14303 can_plt_call
= TRUE
;
14308 if (!can_plt_call
&& h
!= NULL
)
14310 const char *name
= h
->elf
.root
.root
.string
;
14315 if (strncmp (name
, "__libc_start_main", 17) == 0
14316 && (name
[17] == 0 || name
[17] == '@'))
14318 /* Allow crt1 branch to go via a toc adjusting
14319 stub. Other calls that never return could do
14320 the same, if we could detect such. */
14321 can_plt_call
= TRUE
;
14327 /* g++ as of 20130507 emits self-calls without a
14328 following nop. This is arguably wrong since we
14329 have conflicting information. On the one hand a
14330 global symbol and on the other a local call
14331 sequence, but don't error for this special case.
14332 It isn't possible to cheaply verify we have
14333 exactly such a call. Allow all calls to the same
14335 asection
*code_sec
= sec
;
14337 if (get_opd_info (sec
) != NULL
)
14339 bfd_vma off
= (relocation
+ addend
14340 - sec
->output_section
->vma
14341 - sec
->output_offset
);
14343 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14345 if (code_sec
== input_section
)
14346 can_plt_call
= TRUE
;
14351 if (stub_entry
->stub_type
== ppc_stub_plt_call
14352 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14353 info
->callbacks
->einfo
14354 /* xgettext:c-format */
14355 (_("%H: call to `%T' lacks nop, can't restore toc; "
14356 "recompile with -fPIC\n"),
14357 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14359 info
->callbacks
->einfo
14360 /* xgettext:c-format */
14361 (_("%H: call to `%T' lacks nop, can't restore toc; "
14362 "(-mcmodel=small toc adjust stub)\n"),
14363 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14365 bfd_set_error (bfd_error_bad_value
);
14370 && (stub_entry
->stub_type
== ppc_stub_plt_call
14371 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14372 unresolved_reloc
= FALSE
;
14375 if ((stub_entry
== NULL
14376 || stub_entry
->stub_type
== ppc_stub_long_branch
14377 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14378 && get_opd_info (sec
) != NULL
)
14380 /* The branch destination is the value of the opd entry. */
14381 bfd_vma off
= (relocation
+ addend
14382 - sec
->output_section
->vma
14383 - sec
->output_offset
);
14384 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14385 if (dest
!= (bfd_vma
) -1)
14389 reloc_dest
= DEST_OPD
;
14393 /* If the branch is out of reach we ought to have a long
14395 from
= (rel
->r_offset
14396 + input_section
->output_offset
14397 + input_section
->output_section
->vma
);
14399 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14403 if (stub_entry
!= NULL
14404 && (stub_entry
->stub_type
== ppc_stub_long_branch
14405 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14406 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14407 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14408 || (relocation
+ addend
- from
+ max_br_offset
14409 < 2 * max_br_offset
)))
14410 /* Don't use the stub if this branch is in range. */
14413 if (stub_entry
!= NULL
)
14415 /* Munge up the value and addend so that we call the stub
14416 rather than the procedure directly. */
14417 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14419 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14420 relocation
+= (stub_sec
->output_offset
14421 + stub_sec
->output_section
->vma
14422 + stub_sec
->size
- htab
->sfpr
->size
14423 - htab
->sfpr
->output_offset
14424 - htab
->sfpr
->output_section
->vma
);
14426 relocation
= (stub_entry
->stub_offset
14427 + stub_sec
->output_offset
14428 + stub_sec
->output_section
->vma
);
14430 reloc_dest
= DEST_STUB
;
14432 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14433 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14434 && (ALWAYS_EMIT_R2SAVE
14435 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14436 && rel
+ 1 < relend
14437 && rel
[1].r_offset
== rel
->r_offset
+ 4
14438 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14446 /* Set 'a' bit. This is 0b00010 in BO field for branch
14447 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14448 for branch on CTR insns (BO == 1a00t or 1a01t). */
14449 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14450 insn
|= 0x02 << 21;
14451 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14452 insn
|= 0x08 << 21;
14458 /* Invert 'y' bit if not the default. */
14459 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14460 insn
^= 0x01 << 21;
14463 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14466 /* NOP out calls to undefined weak functions.
14467 We can thus call a weak function without first
14468 checking whether the function is defined. */
14470 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14471 && h
->elf
.dynindx
== -1
14472 && r_type
== R_PPC64_REL24
14476 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14482 /* Set `addend'. */
14487 info
->callbacks
->einfo
14488 /* xgettext:c-format */
14489 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14490 input_bfd
, (int) r_type
, sym_name
);
14492 bfd_set_error (bfd_error_bad_value
);
14498 case R_PPC64_TLSGD
:
14499 case R_PPC64_TLSLD
:
14500 case R_PPC64_TOCSAVE
:
14501 case R_PPC64_GNU_VTINHERIT
:
14502 case R_PPC64_GNU_VTENTRY
:
14503 case R_PPC64_ENTRY
:
14506 /* GOT16 relocations. Like an ADDR16 using the symbol's
14507 address in the GOT as relocation value instead of the
14508 symbol's value itself. Also, create a GOT entry for the
14509 symbol and put the symbol value there. */
14510 case R_PPC64_GOT_TLSGD16
:
14511 case R_PPC64_GOT_TLSGD16_LO
:
14512 case R_PPC64_GOT_TLSGD16_HI
:
14513 case R_PPC64_GOT_TLSGD16_HA
:
14514 tls_type
= TLS_TLS
| TLS_GD
;
14517 case R_PPC64_GOT_TLSLD16
:
14518 case R_PPC64_GOT_TLSLD16_LO
:
14519 case R_PPC64_GOT_TLSLD16_HI
:
14520 case R_PPC64_GOT_TLSLD16_HA
:
14521 tls_type
= TLS_TLS
| TLS_LD
;
14524 case R_PPC64_GOT_TPREL16_DS
:
14525 case R_PPC64_GOT_TPREL16_LO_DS
:
14526 case R_PPC64_GOT_TPREL16_HI
:
14527 case R_PPC64_GOT_TPREL16_HA
:
14528 tls_type
= TLS_TLS
| TLS_TPREL
;
14531 case R_PPC64_GOT_DTPREL16_DS
:
14532 case R_PPC64_GOT_DTPREL16_LO_DS
:
14533 case R_PPC64_GOT_DTPREL16_HI
:
14534 case R_PPC64_GOT_DTPREL16_HA
:
14535 tls_type
= TLS_TLS
| TLS_DTPREL
;
14538 case R_PPC64_GOT16
:
14539 case R_PPC64_GOT16_LO
:
14540 case R_PPC64_GOT16_HI
:
14541 case R_PPC64_GOT16_HA
:
14542 case R_PPC64_GOT16_DS
:
14543 case R_PPC64_GOT16_LO_DS
:
14546 /* Relocation is to the entry for this symbol in the global
14551 unsigned long indx
= 0;
14552 struct got_entry
*ent
;
14554 if (tls_type
== (TLS_TLS
| TLS_LD
)
14556 || !h
->elf
.def_dynamic
))
14557 ent
= ppc64_tlsld_got (input_bfd
);
14562 if (!htab
->elf
.dynamic_sections_created
14563 || h
->elf
.dynindx
== -1
14564 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14565 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14566 /* This is actually a static link, or it is a
14567 -Bsymbolic link and the symbol is defined
14568 locally, or the symbol was forced to be local
14569 because of a version file. */
14573 indx
= h
->elf
.dynindx
;
14574 unresolved_reloc
= FALSE
;
14576 ent
= h
->elf
.got
.glist
;
14580 if (local_got_ents
== NULL
)
14582 ent
= local_got_ents
[r_symndx
];
14585 for (; ent
!= NULL
; ent
= ent
->next
)
14586 if (ent
->addend
== orig_rel
.r_addend
14587 && ent
->owner
== input_bfd
14588 && ent
->tls_type
== tls_type
)
14594 if (ent
->is_indirect
)
14595 ent
= ent
->got
.ent
;
14596 offp
= &ent
->got
.offset
;
14597 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14601 /* The offset must always be a multiple of 8. We use the
14602 least significant bit to record whether we have already
14603 processed this entry. */
14605 if ((off
& 1) != 0)
14609 /* Generate relocs for the dynamic linker, except in
14610 the case of TLSLD where we'll use one entry per
14618 ? h
->elf
.type
== STT_GNU_IFUNC
14619 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14622 relgot
= htab
->elf
.irelplt
;
14624 htab
->local_ifunc_resolver
= 1;
14625 else if (is_static_defined (&h
->elf
))
14626 htab
->maybe_local_ifunc_resolver
= 1;
14629 || (bfd_link_pic (info
)
14631 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14632 || (tls_type
== (TLS_TLS
| TLS_LD
)
14633 && !h
->elf
.def_dynamic
))))
14634 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14635 if (relgot
!= NULL
)
14637 outrel
.r_offset
= (got
->output_section
->vma
14638 + got
->output_offset
14640 outrel
.r_addend
= addend
;
14641 if (tls_type
& (TLS_LD
| TLS_GD
))
14643 outrel
.r_addend
= 0;
14644 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14645 if (tls_type
== (TLS_TLS
| TLS_GD
))
14647 loc
= relgot
->contents
;
14648 loc
+= (relgot
->reloc_count
++
14649 * sizeof (Elf64_External_Rela
));
14650 bfd_elf64_swap_reloca_out (output_bfd
,
14652 outrel
.r_offset
+= 8;
14653 outrel
.r_addend
= addend
;
14655 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14658 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14659 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14660 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14661 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14662 else if (indx
!= 0)
14663 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14667 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14669 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14671 /* Write the .got section contents for the sake
14673 loc
= got
->contents
+ off
;
14674 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14678 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14680 outrel
.r_addend
+= relocation
;
14681 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14683 if (htab
->elf
.tls_sec
== NULL
)
14684 outrel
.r_addend
= 0;
14686 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14689 loc
= relgot
->contents
;
14690 loc
+= (relgot
->reloc_count
++
14691 * sizeof (Elf64_External_Rela
));
14692 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14695 /* Init the .got section contents here if we're not
14696 emitting a reloc. */
14699 relocation
+= addend
;
14702 if (htab
->elf
.tls_sec
== NULL
)
14706 if (tls_type
& TLS_LD
)
14709 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14710 if (tls_type
& TLS_TPREL
)
14711 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14714 if (tls_type
& (TLS_GD
| TLS_LD
))
14716 bfd_put_64 (output_bfd
, relocation
,
14717 got
->contents
+ off
+ 8);
14721 bfd_put_64 (output_bfd
, relocation
,
14722 got
->contents
+ off
);
14726 if (off
>= (bfd_vma
) -2)
14729 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14730 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14734 case R_PPC64_PLT16_HA
:
14735 case R_PPC64_PLT16_HI
:
14736 case R_PPC64_PLT16_LO
:
14737 case R_PPC64_PLT32
:
14738 case R_PPC64_PLT64
:
14739 /* Relocation is to the entry for this symbol in the
14740 procedure linkage table. */
14742 struct plt_entry
**plt_list
= NULL
;
14744 plt_list
= &h
->elf
.plt
.plist
;
14745 else if (local_got_ents
!= NULL
)
14747 struct plt_entry
**local_plt
= (struct plt_entry
**)
14748 (local_got_ents
+ symtab_hdr
->sh_info
);
14749 unsigned char *local_got_tls_masks
= (unsigned char *)
14750 (local_plt
+ symtab_hdr
->sh_info
);
14751 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14752 plt_list
= local_plt
+ r_symndx
;
14756 struct plt_entry
*ent
;
14758 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14759 if (ent
->plt
.offset
!= (bfd_vma
) -1
14760 && ent
->addend
== orig_rel
.r_addend
)
14764 plt
= htab
->elf
.splt
;
14765 if (!htab
->elf
.dynamic_sections_created
14767 || h
->elf
.dynindx
== -1)
14768 plt
= htab
->elf
.iplt
;
14769 relocation
= (plt
->output_section
->vma
14770 + plt
->output_offset
14771 + ent
->plt
.offset
);
14773 unresolved_reloc
= FALSE
;
14781 /* Relocation value is TOC base. */
14782 relocation
= TOCstart
;
14783 if (r_symndx
== STN_UNDEF
)
14784 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14785 else if (unresolved_reloc
)
14787 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14788 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14790 unresolved_reloc
= TRUE
;
14793 /* TOC16 relocs. We want the offset relative to the TOC base,
14794 which is the address of the start of the TOC plus 0x8000.
14795 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14797 case R_PPC64_TOC16
:
14798 case R_PPC64_TOC16_LO
:
14799 case R_PPC64_TOC16_HI
:
14800 case R_PPC64_TOC16_DS
:
14801 case R_PPC64_TOC16_LO_DS
:
14802 case R_PPC64_TOC16_HA
:
14803 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14806 /* Relocate against the beginning of the section. */
14807 case R_PPC64_SECTOFF
:
14808 case R_PPC64_SECTOFF_LO
:
14809 case R_PPC64_SECTOFF_HI
:
14810 case R_PPC64_SECTOFF_DS
:
14811 case R_PPC64_SECTOFF_LO_DS
:
14812 case R_PPC64_SECTOFF_HA
:
14814 addend
-= sec
->output_section
->vma
;
14817 case R_PPC64_REL16
:
14818 case R_PPC64_REL16_LO
:
14819 case R_PPC64_REL16_HI
:
14820 case R_PPC64_REL16_HA
:
14821 case R_PPC64_REL16DX_HA
:
14824 case R_PPC64_REL14
:
14825 case R_PPC64_REL14_BRNTAKEN
:
14826 case R_PPC64_REL14_BRTAKEN
:
14827 case R_PPC64_REL24
:
14830 case R_PPC64_TPREL16
:
14831 case R_PPC64_TPREL16_LO
:
14832 case R_PPC64_TPREL16_HI
:
14833 case R_PPC64_TPREL16_HA
:
14834 case R_PPC64_TPREL16_DS
:
14835 case R_PPC64_TPREL16_LO_DS
:
14836 case R_PPC64_TPREL16_HIGH
:
14837 case R_PPC64_TPREL16_HIGHA
:
14838 case R_PPC64_TPREL16_HIGHER
:
14839 case R_PPC64_TPREL16_HIGHERA
:
14840 case R_PPC64_TPREL16_HIGHEST
:
14841 case R_PPC64_TPREL16_HIGHESTA
:
14843 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14844 && h
->elf
.dynindx
== -1)
14846 /* Make this relocation against an undefined weak symbol
14847 resolve to zero. This is really just a tweak, since
14848 code using weak externs ought to check that they are
14849 defined before using them. */
14850 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14852 insn
= bfd_get_32 (input_bfd
, p
);
14853 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14855 bfd_put_32 (input_bfd
, insn
, p
);
14858 if (htab
->elf
.tls_sec
!= NULL
)
14859 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14860 /* The TPREL16 relocs shouldn't really be used in shared
14861 libs or with non-local symbols as that will result in
14862 DT_TEXTREL being set, but support them anyway. */
14865 case R_PPC64_DTPREL16
:
14866 case R_PPC64_DTPREL16_LO
:
14867 case R_PPC64_DTPREL16_HI
:
14868 case R_PPC64_DTPREL16_HA
:
14869 case R_PPC64_DTPREL16_DS
:
14870 case R_PPC64_DTPREL16_LO_DS
:
14871 case R_PPC64_DTPREL16_HIGH
:
14872 case R_PPC64_DTPREL16_HIGHA
:
14873 case R_PPC64_DTPREL16_HIGHER
:
14874 case R_PPC64_DTPREL16_HIGHERA
:
14875 case R_PPC64_DTPREL16_HIGHEST
:
14876 case R_PPC64_DTPREL16_HIGHESTA
:
14877 if (htab
->elf
.tls_sec
!= NULL
)
14878 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14881 case R_PPC64_ADDR64_LOCAL
:
14882 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14887 case R_PPC64_DTPMOD64
:
14892 case R_PPC64_TPREL64
:
14893 if (htab
->elf
.tls_sec
!= NULL
)
14894 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14897 case R_PPC64_DTPREL64
:
14898 if (htab
->elf
.tls_sec
!= NULL
)
14899 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14900 /* Fall through. */
14902 /* Relocations that may need to be propagated if this is a
14904 case R_PPC64_REL30
:
14905 case R_PPC64_REL32
:
14906 case R_PPC64_REL64
:
14907 case R_PPC64_ADDR14
:
14908 case R_PPC64_ADDR14_BRNTAKEN
:
14909 case R_PPC64_ADDR14_BRTAKEN
:
14910 case R_PPC64_ADDR16
:
14911 case R_PPC64_ADDR16_DS
:
14912 case R_PPC64_ADDR16_HA
:
14913 case R_PPC64_ADDR16_HI
:
14914 case R_PPC64_ADDR16_HIGH
:
14915 case R_PPC64_ADDR16_HIGHA
:
14916 case R_PPC64_ADDR16_HIGHER
:
14917 case R_PPC64_ADDR16_HIGHERA
:
14918 case R_PPC64_ADDR16_HIGHEST
:
14919 case R_PPC64_ADDR16_HIGHESTA
:
14920 case R_PPC64_ADDR16_LO
:
14921 case R_PPC64_ADDR16_LO_DS
:
14922 case R_PPC64_ADDR24
:
14923 case R_PPC64_ADDR32
:
14924 case R_PPC64_ADDR64
:
14925 case R_PPC64_UADDR16
:
14926 case R_PPC64_UADDR32
:
14927 case R_PPC64_UADDR64
:
14929 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14932 if (NO_OPD_RELOCS
&& is_opd
)
14935 if (bfd_link_pic (info
)
14937 || h
->dyn_relocs
!= NULL
)
14938 && ((h
!= NULL
&& pc_dynrelocs (h
))
14939 || must_be_dyn_reloc (info
, r_type
)))
14941 ? h
->dyn_relocs
!= NULL
14942 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14944 bfd_boolean skip
, relocate
;
14949 /* When generating a dynamic object, these relocations
14950 are copied into the output file to be resolved at run
14956 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14957 input_section
, rel
->r_offset
);
14958 if (out_off
== (bfd_vma
) -1)
14960 else if (out_off
== (bfd_vma
) -2)
14961 skip
= TRUE
, relocate
= TRUE
;
14962 out_off
+= (input_section
->output_section
->vma
14963 + input_section
->output_offset
);
14964 outrel
.r_offset
= out_off
;
14965 outrel
.r_addend
= rel
->r_addend
;
14967 /* Optimize unaligned reloc use. */
14968 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14969 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14970 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14971 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14972 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14973 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14974 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14975 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14976 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14979 memset (&outrel
, 0, sizeof outrel
);
14980 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14982 && r_type
!= R_PPC64_TOC
)
14984 indx
= h
->elf
.dynindx
;
14985 BFD_ASSERT (indx
!= -1);
14986 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14990 /* This symbol is local, or marked to become local,
14991 or this is an opd section reloc which must point
14992 at a local function. */
14993 outrel
.r_addend
+= relocation
;
14994 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14996 if (is_opd
&& h
!= NULL
)
14998 /* Lie about opd entries. This case occurs
14999 when building shared libraries and we
15000 reference a function in another shared
15001 lib. The same thing happens for a weak
15002 definition in an application that's
15003 overridden by a strong definition in a
15004 shared lib. (I believe this is a generic
15005 bug in binutils handling of weak syms.)
15006 In these cases we won't use the opd
15007 entry in this lib. */
15008 unresolved_reloc
= FALSE
;
15011 && r_type
== R_PPC64_ADDR64
15013 ? h
->elf
.type
== STT_GNU_IFUNC
15014 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
15015 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15018 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
15020 /* We need to relocate .opd contents for ld.so.
15021 Prelink also wants simple and consistent rules
15022 for relocs. This make all RELATIVE relocs have
15023 *r_offset equal to r_addend. */
15030 ? h
->elf
.type
== STT_GNU_IFUNC
15031 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15033 info
->callbacks
->einfo
15034 /* xgettext:c-format */
15035 (_("%H: %s for indirect "
15036 "function `%T' unsupported\n"),
15037 input_bfd
, input_section
, rel
->r_offset
,
15038 ppc64_elf_howto_table
[r_type
]->name
,
15042 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
15044 else if (sec
== NULL
|| sec
->owner
== NULL
)
15046 bfd_set_error (bfd_error_bad_value
);
15053 osec
= sec
->output_section
;
15054 indx
= elf_section_data (osec
)->dynindx
;
15058 if ((osec
->flags
& SEC_READONLY
) == 0
15059 && htab
->elf
.data_index_section
!= NULL
)
15060 osec
= htab
->elf
.data_index_section
;
15062 osec
= htab
->elf
.text_index_section
;
15063 indx
= elf_section_data (osec
)->dynindx
;
15065 BFD_ASSERT (indx
!= 0);
15067 /* We are turning this relocation into one
15068 against a section symbol, so subtract out
15069 the output section's address but not the
15070 offset of the input section in the output
15072 outrel
.r_addend
-= osec
->vma
;
15075 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15079 sreloc
= elf_section_data (input_section
)->sreloc
;
15081 ? h
->elf
.type
== STT_GNU_IFUNC
15082 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15084 sreloc
= htab
->elf
.irelplt
;
15086 htab
->local_ifunc_resolver
= 1;
15087 else if (is_static_defined (&h
->elf
))
15088 htab
->maybe_local_ifunc_resolver
= 1;
15090 if (sreloc
== NULL
)
15093 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
15096 loc
= sreloc
->contents
;
15097 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15098 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15100 /* If this reloc is against an external symbol, it will
15101 be computed at runtime, so there's no need to do
15102 anything now. However, for the sake of prelink ensure
15103 that the section contents are a known value. */
15106 unresolved_reloc
= FALSE
;
15107 /* The value chosen here is quite arbitrary as ld.so
15108 ignores section contents except for the special
15109 case of .opd where the contents might be accessed
15110 before relocation. Choose zero, as that won't
15111 cause reloc overflow. */
15114 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15115 to improve backward compatibility with older
15117 if (r_type
== R_PPC64_ADDR64
)
15118 addend
= outrel
.r_addend
;
15119 /* Adjust pc_relative relocs to have zero in *r_offset. */
15120 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15121 addend
= outrel
.r_offset
;
15127 case R_PPC64_GLOB_DAT
:
15128 case R_PPC64_JMP_SLOT
:
15129 case R_PPC64_JMP_IREL
:
15130 case R_PPC64_RELATIVE
:
15131 /* We shouldn't ever see these dynamic relocs in relocatable
15133 /* Fall through. */
15135 case R_PPC64_PLTGOT16
:
15136 case R_PPC64_PLTGOT16_DS
:
15137 case R_PPC64_PLTGOT16_HA
:
15138 case R_PPC64_PLTGOT16_HI
:
15139 case R_PPC64_PLTGOT16_LO
:
15140 case R_PPC64_PLTGOT16_LO_DS
:
15141 case R_PPC64_PLTREL32
:
15142 case R_PPC64_PLTREL64
:
15143 /* These ones haven't been implemented yet. */
15145 info
->callbacks
->einfo
15146 /* xgettext:c-format */
15147 (_("%P: %B: %s is not supported for `%T'\n"),
15149 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15151 bfd_set_error (bfd_error_invalid_operation
);
15156 /* Multi-instruction sequences that access the TOC can be
15157 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15158 to nop; addi rb,r2,x; */
15159 howto
= ppc64_elf_howto_table
[(int) r_type
];
15165 case R_PPC64_GOT_TLSLD16_HI
:
15166 case R_PPC64_GOT_TLSGD16_HI
:
15167 case R_PPC64_GOT_TPREL16_HI
:
15168 case R_PPC64_GOT_DTPREL16_HI
:
15169 case R_PPC64_GOT16_HI
:
15170 case R_PPC64_TOC16_HI
:
15171 /* These relocs would only be useful if building up an
15172 offset to later add to r2, perhaps in an indexed
15173 addressing mode instruction. Don't try to optimize.
15174 Unfortunately, the possibility of someone building up an
15175 offset like this or even with the HA relocs, means that
15176 we need to check the high insn when optimizing the low
15180 case R_PPC64_GOT_TLSLD16_HA
:
15181 case R_PPC64_GOT_TLSGD16_HA
:
15182 case R_PPC64_GOT_TPREL16_HA
:
15183 case R_PPC64_GOT_DTPREL16_HA
:
15184 case R_PPC64_GOT16_HA
:
15185 case R_PPC64_TOC16_HA
:
15186 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15187 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15189 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15190 bfd_put_32 (input_bfd
, NOP
, p
);
15194 case R_PPC64_GOT_TLSLD16_LO
:
15195 case R_PPC64_GOT_TLSGD16_LO
:
15196 case R_PPC64_GOT_TPREL16_LO_DS
:
15197 case R_PPC64_GOT_DTPREL16_LO_DS
:
15198 case R_PPC64_GOT16_LO
:
15199 case R_PPC64_GOT16_LO_DS
:
15200 case R_PPC64_TOC16_LO
:
15201 case R_PPC64_TOC16_LO_DS
:
15202 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15203 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15205 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15206 insn
= bfd_get_32 (input_bfd
, p
);
15207 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15209 /* Transform addic to addi when we change reg. */
15210 insn
&= ~((0x3f << 26) | (0x1f << 16));
15211 insn
|= (14u << 26) | (2 << 16);
15215 insn
&= ~(0x1f << 16);
15218 bfd_put_32 (input_bfd
, insn
, p
);
15222 case R_PPC64_TPREL16_HA
:
15223 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15225 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15226 insn
= bfd_get_32 (input_bfd
, p
);
15227 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15228 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15229 /* xgettext:c-format */
15230 info
->callbacks
->minfo
15231 (_("%H: warning: %s unexpected insn %#x.\n"),
15232 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
15234 bfd_put_32 (input_bfd
, NOP
, p
);
15238 case R_PPC64_TPREL16_LO
:
15239 case R_PPC64_TPREL16_LO_DS
:
15240 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15242 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15243 insn
= bfd_get_32 (input_bfd
, p
);
15244 insn
&= ~(0x1f << 16);
15246 bfd_put_32 (input_bfd
, insn
, p
);
15251 /* Do any further special processing. */
15257 case R_PPC64_REL16_HA
:
15258 case R_PPC64_REL16DX_HA
:
15259 case R_PPC64_ADDR16_HA
:
15260 case R_PPC64_ADDR16_HIGHA
:
15261 case R_PPC64_ADDR16_HIGHERA
:
15262 case R_PPC64_ADDR16_HIGHESTA
:
15263 case R_PPC64_TOC16_HA
:
15264 case R_PPC64_SECTOFF_HA
:
15265 case R_PPC64_TPREL16_HA
:
15266 case R_PPC64_TPREL16_HIGHA
:
15267 case R_PPC64_TPREL16_HIGHERA
:
15268 case R_PPC64_TPREL16_HIGHESTA
:
15269 case R_PPC64_DTPREL16_HA
:
15270 case R_PPC64_DTPREL16_HIGHA
:
15271 case R_PPC64_DTPREL16_HIGHERA
:
15272 case R_PPC64_DTPREL16_HIGHESTA
:
15273 /* It's just possible that this symbol is a weak symbol
15274 that's not actually defined anywhere. In that case,
15275 'sec' would be NULL, and we should leave the symbol
15276 alone (it will be set to zero elsewhere in the link). */
15279 /* Fall through. */
15281 case R_PPC64_GOT16_HA
:
15282 case R_PPC64_PLTGOT16_HA
:
15283 case R_PPC64_PLT16_HA
:
15284 case R_PPC64_GOT_TLSGD16_HA
:
15285 case R_PPC64_GOT_TLSLD16_HA
:
15286 case R_PPC64_GOT_TPREL16_HA
:
15287 case R_PPC64_GOT_DTPREL16_HA
:
15288 /* Add 0x10000 if sign bit in 0:15 is set.
15289 Bits 0:15 are not used. */
15293 case R_PPC64_ADDR16_DS
:
15294 case R_PPC64_ADDR16_LO_DS
:
15295 case R_PPC64_GOT16_DS
:
15296 case R_PPC64_GOT16_LO_DS
:
15297 case R_PPC64_PLT16_LO_DS
:
15298 case R_PPC64_SECTOFF_DS
:
15299 case R_PPC64_SECTOFF_LO_DS
:
15300 case R_PPC64_TOC16_DS
:
15301 case R_PPC64_TOC16_LO_DS
:
15302 case R_PPC64_PLTGOT16_DS
:
15303 case R_PPC64_PLTGOT16_LO_DS
:
15304 case R_PPC64_GOT_TPREL16_DS
:
15305 case R_PPC64_GOT_TPREL16_LO_DS
:
15306 case R_PPC64_GOT_DTPREL16_DS
:
15307 case R_PPC64_GOT_DTPREL16_LO_DS
:
15308 case R_PPC64_TPREL16_DS
:
15309 case R_PPC64_TPREL16_LO_DS
:
15310 case R_PPC64_DTPREL16_DS
:
15311 case R_PPC64_DTPREL16_LO_DS
:
15312 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15314 /* If this reloc is against an lq, lxv, or stxv insn, then
15315 the value must be a multiple of 16. This is somewhat of
15316 a hack, but the "correct" way to do this by defining _DQ
15317 forms of all the _DS relocs bloats all reloc switches in
15318 this file. It doesn't make much sense to use these
15319 relocs in data, so testing the insn should be safe. */
15320 if ((insn
& (0x3f << 26)) == (56u << 26)
15321 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15323 relocation
+= addend
;
15324 addend
= insn
& (mask
^ 3);
15325 if ((relocation
& mask
) != 0)
15327 relocation
^= relocation
& mask
;
15328 info
->callbacks
->einfo
15329 /* xgettext:c-format */
15330 (_("%H: error: %s not a multiple of %u\n"),
15331 input_bfd
, input_section
, rel
->r_offset
,
15334 bfd_set_error (bfd_error_bad_value
);
15341 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15342 because such sections are not SEC_ALLOC and thus ld.so will
15343 not process them. */
15344 if (unresolved_reloc
15345 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15346 && h
->elf
.def_dynamic
)
15347 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15348 rel
->r_offset
) != (bfd_vma
) -1)
15350 info
->callbacks
->einfo
15351 /* xgettext:c-format */
15352 (_("%H: unresolvable %s against `%T'\n"),
15353 input_bfd
, input_section
, rel
->r_offset
,
15355 h
->elf
.root
.root
.string
);
15359 /* 16-bit fields in insns mostly have signed values, but a
15360 few insns have 16-bit unsigned values. Really, we should
15361 have different reloc types. */
15362 if (howto
->complain_on_overflow
!= complain_overflow_dont
15363 && howto
->dst_mask
== 0xffff
15364 && (input_section
->flags
& SEC_CODE
) != 0)
15366 enum complain_overflow complain
= complain_overflow_signed
;
15368 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15369 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15370 complain
= complain_overflow_bitfield
;
15371 else if (howto
->rightshift
== 0
15372 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15373 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15374 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15375 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15376 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15377 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15378 complain
= complain_overflow_unsigned
;
15379 if (howto
->complain_on_overflow
!= complain
)
15381 alt_howto
= *howto
;
15382 alt_howto
.complain_on_overflow
= complain
;
15383 howto
= &alt_howto
;
15387 if (r_type
== R_PPC64_REL16DX_HA
)
15389 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15390 if (rel
->r_offset
+ 4 > input_section
->size
)
15391 r
= bfd_reloc_outofrange
;
15394 relocation
+= addend
;
15395 relocation
-= (rel
->r_offset
15396 + input_section
->output_offset
15397 + input_section
->output_section
->vma
);
15398 relocation
= (bfd_signed_vma
) relocation
>> 16;
15399 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15401 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15402 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15404 if (relocation
+ 0x8000 > 0xffff)
15405 r
= bfd_reloc_overflow
;
15409 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15410 rel
->r_offset
, relocation
, addend
);
15412 if (r
!= bfd_reloc_ok
)
15414 char *more_info
= NULL
;
15415 const char *reloc_name
= howto
->name
;
15417 if (reloc_dest
!= DEST_NORMAL
)
15419 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15420 if (more_info
!= NULL
)
15422 strcpy (more_info
, reloc_name
);
15423 strcat (more_info
, (reloc_dest
== DEST_OPD
15424 ? " (OPD)" : " (stub)"));
15425 reloc_name
= more_info
;
15429 if (r
== bfd_reloc_overflow
)
15431 /* On code like "if (foo) foo();" don't report overflow
15432 on a branch to zero when foo is undefined. */
15434 && (reloc_dest
== DEST_STUB
15436 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15437 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15438 && is_branch_reloc (r_type
))))
15439 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15440 sym_name
, reloc_name
,
15442 input_bfd
, input_section
,
15447 info
->callbacks
->einfo
15448 /* xgettext:c-format */
15449 (_("%H: %s against `%T': error %d\n"),
15450 input_bfd
, input_section
, rel
->r_offset
,
15451 reloc_name
, sym_name
, (int) r
);
15454 if (more_info
!= NULL
)
15464 Elf_Internal_Shdr
*rel_hdr
;
15465 size_t deleted
= rel
- wrel
;
15467 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15468 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15469 if (rel_hdr
->sh_size
== 0)
15471 /* It is too late to remove an empty reloc section. Leave
15473 ??? What is wrong with an empty section??? */
15474 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15477 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15478 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15479 input_section
->reloc_count
-= deleted
;
15482 /* If we're emitting relocations, then shortly after this function
15483 returns, reloc offsets and addends for this section will be
15484 adjusted. Worse, reloc symbol indices will be for the output
15485 file rather than the input. Save a copy of the relocs for
15486 opd_entry_value. */
15487 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15490 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15491 rel
= bfd_alloc (input_bfd
, amt
);
15492 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15493 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15496 memcpy (rel
, relocs
, amt
);
15501 /* Adjust the value of any local symbols in opd sections. */
15504 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15505 const char *name ATTRIBUTE_UNUSED
,
15506 Elf_Internal_Sym
*elfsym
,
15507 asection
*input_sec
,
15508 struct elf_link_hash_entry
*h
)
15510 struct _opd_sec_data
*opd
;
15517 opd
= get_opd_info (input_sec
);
15518 if (opd
== NULL
|| opd
->adjust
== NULL
)
15521 value
= elfsym
->st_value
- input_sec
->output_offset
;
15522 if (!bfd_link_relocatable (info
))
15523 value
-= input_sec
->output_section
->vma
;
15525 adjust
= opd
->adjust
[OPD_NDX (value
)];
15529 elfsym
->st_value
+= adjust
;
15533 /* Finish up dynamic symbol handling. We set the contents of various
15534 dynamic sections here. */
15537 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15538 struct bfd_link_info
*info
,
15539 struct elf_link_hash_entry
*h
,
15540 Elf_Internal_Sym
*sym
)
15542 struct ppc_link_hash_table
*htab
;
15543 struct plt_entry
*ent
;
15544 Elf_Internal_Rela rela
;
15547 htab
= ppc_hash_table (info
);
15551 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15552 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15554 /* This symbol has an entry in the procedure linkage
15555 table. Set it up. */
15556 if (!htab
->elf
.dynamic_sections_created
15557 || h
->dynindx
== -1)
15559 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15561 && (h
->root
.type
== bfd_link_hash_defined
15562 || h
->root
.type
== bfd_link_hash_defweak
));
15563 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15564 + htab
->elf
.iplt
->output_offset
15565 + ent
->plt
.offset
);
15567 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15569 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15570 rela
.r_addend
= (h
->root
.u
.def
.value
15571 + h
->root
.u
.def
.section
->output_offset
15572 + h
->root
.u
.def
.section
->output_section
->vma
15574 loc
= (htab
->elf
.irelplt
->contents
15575 + (htab
->elf
.irelplt
->reloc_count
++
15576 * sizeof (Elf64_External_Rela
)));
15577 htab
->local_ifunc_resolver
= 1;
15581 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15582 + htab
->elf
.splt
->output_offset
15583 + ent
->plt
.offset
);
15584 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15585 rela
.r_addend
= ent
->addend
;
15586 loc
= (htab
->elf
.srelplt
->contents
15587 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15588 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15589 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15590 htab
->maybe_local_ifunc_resolver
= 1;
15592 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15594 if (!htab
->opd_abi
)
15596 if (!h
->def_regular
)
15598 /* Mark the symbol as undefined, rather than as
15599 defined in glink. Leave the value if there were
15600 any relocations where pointer equality matters
15601 (this is a clue for the dynamic linker, to make
15602 function pointer comparisons work between an
15603 application and shared library), otherwise set it
15605 sym
->st_shndx
= SHN_UNDEF
;
15606 if (!h
->pointer_equality_needed
)
15608 else if (!h
->ref_regular_nonweak
)
15610 /* This breaks function pointer comparisons, but
15611 that is better than breaking tests for a NULL
15612 function pointer. */
15621 /* This symbol needs a copy reloc. Set it up. */
15624 if (h
->dynindx
== -1
15625 || (h
->root
.type
!= bfd_link_hash_defined
15626 && h
->root
.type
!= bfd_link_hash_defweak
)
15627 || htab
->elf
.srelbss
== NULL
15628 || htab
->elf
.sreldynrelro
== NULL
)
15631 rela
.r_offset
= (h
->root
.u
.def
.value
15632 + h
->root
.u
.def
.section
->output_section
->vma
15633 + h
->root
.u
.def
.section
->output_offset
);
15634 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15636 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15637 srel
= htab
->elf
.sreldynrelro
;
15639 srel
= htab
->elf
.srelbss
;
15640 loc
= srel
->contents
;
15641 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15642 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15648 /* Used to decide how to sort relocs in an optimal manner for the
15649 dynamic linker, before writing them out. */
15651 static enum elf_reloc_type_class
15652 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15653 const asection
*rel_sec
,
15654 const Elf_Internal_Rela
*rela
)
15656 enum elf_ppc64_reloc_type r_type
;
15657 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15659 if (rel_sec
== htab
->elf
.irelplt
)
15660 return reloc_class_ifunc
;
15662 r_type
= ELF64_R_TYPE (rela
->r_info
);
15665 case R_PPC64_RELATIVE
:
15666 return reloc_class_relative
;
15667 case R_PPC64_JMP_SLOT
:
15668 return reloc_class_plt
;
15670 return reloc_class_copy
;
15672 return reloc_class_normal
;
15676 /* Finish up the dynamic sections. */
15679 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15680 struct bfd_link_info
*info
)
15682 struct ppc_link_hash_table
*htab
;
15686 htab
= ppc_hash_table (info
);
15690 dynobj
= htab
->elf
.dynobj
;
15691 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15693 if (htab
->elf
.dynamic_sections_created
)
15695 Elf64_External_Dyn
*dyncon
, *dynconend
;
15697 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15700 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15701 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15702 for (; dyncon
< dynconend
; dyncon
++)
15704 Elf_Internal_Dyn dyn
;
15707 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15714 case DT_PPC64_GLINK
:
15716 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15717 /* We stupidly defined DT_PPC64_GLINK to be the start
15718 of glink rather than the first entry point, which is
15719 what ld.so needs, and now have a bigger stub to
15720 support automatic multiple TOCs. */
15721 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15725 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15728 dyn
.d_un
.d_ptr
= s
->vma
;
15732 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15733 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15734 if (htab
->has_plt_localentry0
)
15735 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15738 case DT_PPC64_OPDSZ
:
15739 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15742 dyn
.d_un
.d_val
= s
->size
;
15746 s
= htab
->elf
.splt
;
15747 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15751 s
= htab
->elf
.srelplt
;
15752 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15756 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15760 if (htab
->local_ifunc_resolver
)
15761 info
->callbacks
->einfo
15762 (_("%X%P: text relocations and GNU indirect "
15763 "functions will result in a segfault at runtime\n"));
15764 else if (htab
->maybe_local_ifunc_resolver
)
15765 info
->callbacks
->einfo
15766 (_("%P: warning: text relocations and GNU indirect "
15767 "functions may result in a segfault at runtime\n"));
15771 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15775 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15776 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15778 /* Fill in the first entry in the global offset table.
15779 We use it to hold the link-time TOCbase. */
15780 bfd_put_64 (output_bfd
,
15781 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15782 htab
->elf
.sgot
->contents
);
15784 /* Set .got entry size. */
15785 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15788 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15789 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15791 /* Set .plt entry size. */
15792 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15793 = PLT_ENTRY_SIZE (htab
);
15796 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15797 brlt ourselves if emitrelocations. */
15798 if (htab
->brlt
!= NULL
15799 && htab
->brlt
->reloc_count
!= 0
15800 && !_bfd_elf_link_output_relocs (output_bfd
,
15802 elf_section_data (htab
->brlt
)->rela
.hdr
,
15803 elf_section_data (htab
->brlt
)->relocs
,
15807 if (htab
->glink
!= NULL
15808 && htab
->glink
->reloc_count
!= 0
15809 && !_bfd_elf_link_output_relocs (output_bfd
,
15811 elf_section_data (htab
->glink
)->rela
.hdr
,
15812 elf_section_data (htab
->glink
)->relocs
,
15816 if (htab
->glink_eh_frame
!= NULL
15817 && htab
->glink_eh_frame
->size
!= 0)
15821 struct map_stub
*group
;
15824 p
= htab
->glink_eh_frame
->contents
;
15825 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15827 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15828 if (group
->stub_sec
!= NULL
)
15830 /* Offset to stub section. */
15831 val
= (group
->stub_sec
->output_section
->vma
15832 + group
->stub_sec
->output_offset
);
15833 val
-= (htab
->glink_eh_frame
->output_section
->vma
15834 + htab
->glink_eh_frame
->output_offset
15835 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15836 if (val
+ 0x80000000 > 0xffffffff)
15838 info
->callbacks
->einfo
15839 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15840 group
->stub_sec
->name
);
15843 bfd_put_32 (dynobj
, val
, p
+ 8);
15844 p
+= stub_eh_frame_size (group
, align
);
15846 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15848 /* Offset to .glink. */
15849 val
= (htab
->glink
->output_section
->vma
15850 + htab
->glink
->output_offset
15852 val
-= (htab
->glink_eh_frame
->output_section
->vma
15853 + htab
->glink_eh_frame
->output_offset
15854 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15855 if (val
+ 0x80000000 > 0xffffffff)
15857 info
->callbacks
->einfo
15858 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15859 htab
->glink
->name
);
15862 bfd_put_32 (dynobj
, val
, p
+ 8);
15863 p
+= (24 + align
- 1) & -align
;
15866 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15867 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15868 htab
->glink_eh_frame
,
15869 htab
->glink_eh_frame
->contents
))
15873 /* We need to handle writing out multiple GOT sections ourselves,
15874 since we didn't add them to DYNOBJ. We know dynobj is the first
15876 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15880 if (!is_ppc64_elf (dynobj
))
15883 s
= ppc64_elf_tdata (dynobj
)->got
;
15886 && s
->output_section
!= bfd_abs_section_ptr
15887 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15888 s
->contents
, s
->output_offset
,
15891 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15894 && s
->output_section
!= bfd_abs_section_ptr
15895 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15896 s
->contents
, s
->output_offset
,
15904 #include "elf64-target.h"
15906 /* FreeBSD support */
15908 #undef TARGET_LITTLE_SYM
15909 #undef TARGET_LITTLE_NAME
15911 #undef TARGET_BIG_SYM
15912 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15913 #undef TARGET_BIG_NAME
15914 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15917 #define ELF_OSABI ELFOSABI_FREEBSD
15920 #define elf64_bed elf64_powerpc_fbsd_bed
15922 #include "elf64-target.h"