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)
3281 symcount
= static_count
;
3283 symcount
+= dyn_count
;
3287 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3291 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3293 /* Use both symbol tables. */
3294 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3295 memcpy (syms
+ static_count
, dyn_syms
,
3296 (dyn_count
+ 1) * sizeof (*syms
));
3298 else if (!relocatable
&& static_count
== 0)
3299 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3301 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3303 synthetic_relocatable
= relocatable
;
3304 synthetic_opd
= opd
;
3305 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3307 if (!relocatable
&& symcount
> 1)
3310 /* Trim duplicate syms, since we may have merged the normal and
3311 dynamic symbols. Actually, we only care about syms that have
3312 different values, so trim any with the same value. */
3313 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3314 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3315 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3316 syms
[j
++] = syms
[i
];
3321 /* Note that here and in compare_symbols we can't compare opd and
3322 sym->section directly. With separate debug info files, the
3323 symbols will be extracted from the debug file while abfd passed
3324 to this function is the real binary. */
3325 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3329 for (; i
< symcount
; ++i
)
3330 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
3331 | SEC_THREAD_LOCAL
))
3332 != (SEC_CODE
| SEC_ALLOC
))
3333 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3337 for (; i
< symcount
; ++i
)
3338 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3342 for (; i
< symcount
; ++i
)
3343 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3347 for (; i
< symcount
; ++i
)
3348 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3349 != (SEC_CODE
| SEC_ALLOC
))
3357 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3362 if (opdsymend
== secsymend
)
3365 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3366 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3370 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3377 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3381 while (r
< opd
->relocation
+ relcount
3382 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3385 if (r
== opd
->relocation
+ relcount
)
3388 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3391 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3394 sym
= *r
->sym_ptr_ptr
;
3395 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3396 sym
->section
->id
, sym
->value
+ r
->addend
))
3399 size
+= sizeof (asymbol
);
3400 size
+= strlen (syms
[i
]->name
) + 2;
3406 s
= *ret
= bfd_malloc (size
);
3413 names
= (char *) (s
+ count
);
3415 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3419 while (r
< opd
->relocation
+ relcount
3420 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3423 if (r
== opd
->relocation
+ relcount
)
3426 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3429 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3432 sym
= *r
->sym_ptr_ptr
;
3433 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3434 sym
->section
->id
, sym
->value
+ r
->addend
))
3439 s
->flags
|= BSF_SYNTHETIC
;
3440 s
->section
= sym
->section
;
3441 s
->value
= sym
->value
+ r
->addend
;
3444 len
= strlen (syms
[i
]->name
);
3445 memcpy (names
, syms
[i
]->name
, len
+ 1);
3447 /* Have udata.p point back to the original symbol this
3448 synthetic symbol was derived from. */
3449 s
->udata
.p
= syms
[i
];
3456 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3457 bfd_byte
*contents
= NULL
;
3460 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3461 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3464 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3466 free_contents_and_exit_err
:
3468 free_contents_and_exit
:
3475 for (i
= secsymend
; i
< opdsymend
; ++i
)
3479 /* Ignore bogus symbols. */
3480 if (syms
[i
]->value
> opd
->size
- 8)
3483 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3484 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3487 size
+= sizeof (asymbol
);
3488 size
+= strlen (syms
[i
]->name
) + 2;
3492 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3494 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3496 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3498 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3500 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3501 goto free_contents_and_exit_err
;
3503 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3504 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3507 extdynend
= extdyn
+ dynamic
->size
;
3508 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3510 Elf_Internal_Dyn dyn
;
3511 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3513 if (dyn
.d_tag
== DT_NULL
)
3516 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3518 /* The first glink stub starts at offset 32; see
3519 comment in ppc64_elf_finish_dynamic_sections. */
3520 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3521 /* The .glink section usually does not survive the final
3522 link; search for the section (usually .text) where the
3523 glink stubs now reside. */
3524 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3535 /* Determine __glink trampoline by reading the relative branch
3536 from the first glink stub. */
3538 unsigned int off
= 0;
3540 while (bfd_get_section_contents (abfd
, glink
, buf
,
3541 glink_vma
+ off
- glink
->vma
, 4))
3543 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3545 if ((insn
& ~0x3fffffc) == 0)
3547 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3556 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3558 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3561 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3562 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3563 goto free_contents_and_exit_err
;
3565 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3566 size
+= plt_count
* sizeof (asymbol
);
3568 p
= relplt
->relocation
;
3569 for (i
= 0; i
< plt_count
; i
++, p
++)
3571 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3573 size
+= sizeof ("+0x") - 1 + 16;
3579 goto free_contents_and_exit
;
3580 s
= *ret
= bfd_malloc (size
);
3582 goto free_contents_and_exit_err
;
3584 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3586 for (i
= secsymend
; i
< opdsymend
; ++i
)
3590 if (syms
[i
]->value
> opd
->size
- 8)
3593 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3594 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3598 asection
*sec
= abfd
->sections
;
3605 long mid
= (lo
+ hi
) >> 1;
3606 if (syms
[mid
]->section
->vma
< ent
)
3608 else if (syms
[mid
]->section
->vma
> ent
)
3612 sec
= syms
[mid
]->section
;
3617 if (lo
>= hi
&& lo
> codesecsym
)
3618 sec
= syms
[lo
- 1]->section
;
3620 for (; sec
!= NULL
; sec
= sec
->next
)
3624 /* SEC_LOAD may not be set if SEC is from a separate debug
3626 if ((sec
->flags
& SEC_ALLOC
) == 0)
3628 if ((sec
->flags
& SEC_CODE
) != 0)
3631 s
->flags
|= BSF_SYNTHETIC
;
3632 s
->value
= ent
- s
->section
->vma
;
3635 len
= strlen (syms
[i
]->name
);
3636 memcpy (names
, syms
[i
]->name
, len
+ 1);
3638 /* Have udata.p point back to the original symbol this
3639 synthetic symbol was derived from. */
3640 s
->udata
.p
= syms
[i
];
3646 if (glink
!= NULL
&& relplt
!= NULL
)
3650 /* Add a symbol for the main glink trampoline. */
3651 memset (s
, 0, sizeof *s
);
3653 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3655 s
->value
= resolv_vma
- glink
->vma
;
3657 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3658 names
+= sizeof ("__glink_PLTresolve");
3663 /* FIXME: It would be very much nicer to put sym@plt on the
3664 stub rather than on the glink branch table entry. The
3665 objdump disassembler would then use a sensible symbol
3666 name on plt calls. The difficulty in doing so is
3667 a) finding the stubs, and,
3668 b) matching stubs against plt entries, and,
3669 c) there can be multiple stubs for a given plt entry.
3671 Solving (a) could be done by code scanning, but older
3672 ppc64 binaries used different stubs to current code.
3673 (b) is the tricky one since you need to known the toc
3674 pointer for at least one function that uses a pic stub to
3675 be able to calculate the plt address referenced.
3676 (c) means gdb would need to set multiple breakpoints (or
3677 find the glink branch itself) when setting breakpoints
3678 for pending shared library loads. */
3679 p
= relplt
->relocation
;
3680 for (i
= 0; i
< plt_count
; i
++, p
++)
3684 *s
= **p
->sym_ptr_ptr
;
3685 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3686 we are defining a symbol, ensure one of them is set. */
3687 if ((s
->flags
& BSF_LOCAL
) == 0)
3688 s
->flags
|= BSF_GLOBAL
;
3689 s
->flags
|= BSF_SYNTHETIC
;
3691 s
->value
= glink_vma
- glink
->vma
;
3694 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3695 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3699 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3700 names
+= sizeof ("+0x") - 1;
3701 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3702 names
+= strlen (names
);
3704 memcpy (names
, "@plt", sizeof ("@plt"));
3705 names
+= sizeof ("@plt");
3725 /* The following functions are specific to the ELF linker, while
3726 functions above are used generally. Those named ppc64_elf_* are
3727 called by the main ELF linker code. They appear in this file more
3728 or less in the order in which they are called. eg.
3729 ppc64_elf_check_relocs is called early in the link process,
3730 ppc64_elf_finish_dynamic_sections is one of the last functions
3733 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3734 functions have both a function code symbol and a function descriptor
3735 symbol. A call to foo in a relocatable object file looks like:
3742 The function definition in another object file might be:
3746 . .quad .TOC.@tocbase
3752 When the linker resolves the call during a static link, the branch
3753 unsurprisingly just goes to .foo and the .opd information is unused.
3754 If the function definition is in a shared library, things are a little
3755 different: The call goes via a plt call stub, the opd information gets
3756 copied to the plt, and the linker patches the nop.
3764 . std 2,40(1) # in practice, the call stub
3765 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3766 . addi 11,11,Lfoo@toc@l # this is the general idea
3774 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3776 The "reloc ()" notation is supposed to indicate that the linker emits
3777 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3780 What are the difficulties here? Well, firstly, the relocations
3781 examined by the linker in check_relocs are against the function code
3782 sym .foo, while the dynamic relocation in the plt is emitted against
3783 the function descriptor symbol, foo. Somewhere along the line, we need
3784 to carefully copy dynamic link information from one symbol to the other.
3785 Secondly, the generic part of the elf linker will make .foo a dynamic
3786 symbol as is normal for most other backends. We need foo dynamic
3787 instead, at least for an application final link. However, when
3788 creating a shared library containing foo, we need to have both symbols
3789 dynamic so that references to .foo are satisfied during the early
3790 stages of linking. Otherwise the linker might decide to pull in a
3791 definition from some other object, eg. a static library.
3793 Update: As of August 2004, we support a new convention. Function
3794 calls may use the function descriptor symbol, ie. "bl foo". This
3795 behaves exactly as "bl .foo". */
3797 /* Of those relocs that might be copied as dynamic relocs, this
3798 function selects those that must be copied when linking a shared
3799 library or PIE, even when the symbol is local. */
3802 must_be_dyn_reloc (struct bfd_link_info
*info
,
3803 enum elf_ppc64_reloc_type r_type
)
3808 /* Only relative relocs can be resolved when the object load
3809 address isn't fixed. DTPREL64 is excluded because the
3810 dynamic linker needs to differentiate global dynamic from
3811 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3819 case R_PPC64_TPREL16
:
3820 case R_PPC64_TPREL16_LO
:
3821 case R_PPC64_TPREL16_HI
:
3822 case R_PPC64_TPREL16_HA
:
3823 case R_PPC64_TPREL16_DS
:
3824 case R_PPC64_TPREL16_LO_DS
:
3825 case R_PPC64_TPREL16_HIGH
:
3826 case R_PPC64_TPREL16_HIGHA
:
3827 case R_PPC64_TPREL16_HIGHER
:
3828 case R_PPC64_TPREL16_HIGHERA
:
3829 case R_PPC64_TPREL16_HIGHEST
:
3830 case R_PPC64_TPREL16_HIGHESTA
:
3831 case R_PPC64_TPREL64
:
3832 /* These relocations are relative but in a shared library the
3833 linker doesn't know the thread pointer base. */
3834 return bfd_link_dll (info
);
3838 /* Whether an undefined weak symbol should resolve to its link-time
3839 value, even in PIC or PIE objects. */
3840 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3841 ((H)->root.type == bfd_link_hash_undefweak \
3842 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3843 || (INFO)->dynamic_undefined_weak == 0))
3845 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3846 copying dynamic variables from a shared lib into an app's dynbss
3847 section, and instead use a dynamic relocation to point into the
3848 shared lib. With code that gcc generates, it's vital that this be
3849 enabled; In the PowerPC64 ABI, the address of a function is actually
3850 the address of a function descriptor, which resides in the .opd
3851 section. gcc uses the descriptor directly rather than going via the
3852 GOT as some other ABI's do, which means that initialized function
3853 pointers must reference the descriptor. Thus, a function pointer
3854 initialized to the address of a function in a shared library will
3855 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3856 redefines the function descriptor symbol to point to the copy. This
3857 presents a problem as a plt entry for that function is also
3858 initialized from the function descriptor symbol and the copy reloc
3859 may not be initialized first. */
3860 #define ELIMINATE_COPY_RELOCS 1
3862 /* Section name for stubs is the associated section name plus this
3864 #define STUB_SUFFIX ".stub"
3867 ppc_stub_long_branch:
3868 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3869 destination, but a 24 bit branch in a stub section will reach.
3872 ppc_stub_plt_branch:
3873 Similar to the above, but a 24 bit branch in the stub section won't
3874 reach its destination.
3875 . addis %r11,%r2,xxx@toc@ha
3876 . ld %r12,xxx@toc@l(%r11)
3881 Used to call a function in a shared library. If it so happens that
3882 the plt entry referenced crosses a 64k boundary, then an extra
3883 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3885 . addis %r11,%r2,xxx@toc@ha
3886 . ld %r12,xxx+0@toc@l(%r11)
3888 . ld %r2,xxx+8@toc@l(%r11)
3889 . ld %r11,xxx+16@toc@l(%r11)
3892 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3893 code to adjust the value and save r2 to support multiple toc sections.
3894 A ppc_stub_long_branch with an r2 offset looks like:
3896 . addis %r2,%r2,off@ha
3897 . addi %r2,%r2,off@l
3900 A ppc_stub_plt_branch with an r2 offset looks like:
3902 . addis %r11,%r2,xxx@toc@ha
3903 . ld %r12,xxx@toc@l(%r11)
3904 . addis %r2,%r2,off@ha
3905 . addi %r2,%r2,off@l
3909 In cases where the "addis" instruction would add zero, the "addis" is
3910 omitted and following instructions modified slightly in some cases.
3913 enum ppc_stub_type
{
3915 ppc_stub_long_branch
,
3916 ppc_stub_long_branch_r2off
,
3917 ppc_stub_plt_branch
,
3918 ppc_stub_plt_branch_r2off
,
3920 ppc_stub_plt_call_r2save
,
3921 ppc_stub_global_entry
,
3925 /* Information on stub grouping. */
3928 /* The stub section. */
3930 /* This is the section to which stubs in the group will be attached. */
3933 struct map_stub
*next
;
3934 /* Whether to emit a copy of register save/restore functions in this
3937 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3938 or -1u if no such stub with bctrl exists. */
3939 unsigned int tls_get_addr_opt_bctrl
;
3942 struct ppc_stub_hash_entry
{
3944 /* Base hash table entry structure. */
3945 struct bfd_hash_entry root
;
3947 enum ppc_stub_type stub_type
;
3949 /* Group information. */
3950 struct map_stub
*group
;
3952 /* Offset within stub_sec of the beginning of this stub. */
3953 bfd_vma stub_offset
;
3955 /* Given the symbol's value and its section we can determine its final
3956 value when building the stubs (so the stub knows where to jump. */
3957 bfd_vma target_value
;
3958 asection
*target_section
;
3960 /* The symbol table entry, if any, that this was derived from. */
3961 struct ppc_link_hash_entry
*h
;
3962 struct plt_entry
*plt_ent
;
3964 /* Symbol st_other. */
3965 unsigned char other
;
3968 struct ppc_branch_hash_entry
{
3970 /* Base hash table entry structure. */
3971 struct bfd_hash_entry root
;
3973 /* Offset within branch lookup table. */
3974 unsigned int offset
;
3976 /* Generation marker. */
3980 /* Used to track dynamic relocations for local symbols. */
3981 struct ppc_dyn_relocs
3983 struct ppc_dyn_relocs
*next
;
3985 /* The input section of the reloc. */
3988 /* Total number of relocs copied for the input section. */
3989 unsigned int count
: 31;
3991 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3992 unsigned int ifunc
: 1;
3995 struct ppc_link_hash_entry
3997 struct elf_link_hash_entry elf
;
4000 /* A pointer to the most recently used stub hash entry against this
4002 struct ppc_stub_hash_entry
*stub_cache
;
4004 /* A pointer to the next symbol starting with a '.' */
4005 struct ppc_link_hash_entry
*next_dot_sym
;
4008 /* Track dynamic relocs copied for this symbol. */
4009 struct elf_dyn_relocs
*dyn_relocs
;
4011 /* Chain of aliases referring to a weakdef. */
4012 struct ppc_link_hash_entry
*weakref
;
4014 /* Link between function code and descriptor symbols. */
4015 struct ppc_link_hash_entry
*oh
;
4017 /* Flag function code and descriptor symbols. */
4018 unsigned int is_func
:1;
4019 unsigned int is_func_descriptor
:1;
4020 unsigned int fake
:1;
4022 /* Whether global opd/toc sym has been adjusted or not.
4023 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4024 should be set for all globals defined in any opd/toc section. */
4025 unsigned int adjust_done
:1;
4027 /* Set if this is an out-of-line register save/restore function,
4028 with non-standard calling convention. */
4029 unsigned int save_res
:1;
4031 /* Set if a duplicate symbol with non-zero localentry is detected,
4032 even when the duplicate symbol does not provide a definition. */
4033 unsigned int non_zero_localentry
:1;
4035 /* Contexts in which symbol is used in the GOT (or TOC).
4036 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4037 corresponding relocs are encountered during check_relocs.
4038 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4039 indicate the corresponding GOT entry type is not needed.
4040 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4041 a TPREL one. We use a separate flag rather than setting TPREL
4042 just for convenience in distinguishing the two cases. */
4043 #define TLS_GD 1 /* GD reloc. */
4044 #define TLS_LD 2 /* LD reloc. */
4045 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4046 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4047 #define TLS_TLS 16 /* Any TLS reloc. */
4048 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4049 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4050 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4051 unsigned char tls_mask
;
4054 /* ppc64 ELF linker hash table. */
4056 struct ppc_link_hash_table
4058 struct elf_link_hash_table elf
;
4060 /* The stub hash table. */
4061 struct bfd_hash_table stub_hash_table
;
4063 /* Another hash table for plt_branch stubs. */
4064 struct bfd_hash_table branch_hash_table
;
4066 /* Hash table for function prologue tocsave. */
4067 htab_t tocsave_htab
;
4069 /* Various options and other info passed from the linker. */
4070 struct ppc64_elf_params
*params
;
4072 /* The size of sec_info below. */
4073 unsigned int sec_info_arr_size
;
4075 /* Per-section array of extra section info. Done this way rather
4076 than as part of ppc64_elf_section_data so we have the info for
4077 non-ppc64 sections. */
4080 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4085 /* The section group that this section belongs to. */
4086 struct map_stub
*group
;
4087 /* A temp section list pointer. */
4092 /* Linked list of groups. */
4093 struct map_stub
*group
;
4095 /* Temp used when calculating TOC pointers. */
4098 asection
*toc_first_sec
;
4100 /* Used when adding symbols. */
4101 struct ppc_link_hash_entry
*dot_syms
;
4103 /* Shortcuts to get to dynamic linker sections. */
4108 asection
*glink_eh_frame
;
4110 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4111 struct ppc_link_hash_entry
*tls_get_addr
;
4112 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4114 /* The size of reliplt used by got entry relocs. */
4115 bfd_size_type got_reli_size
;
4118 unsigned long stub_count
[ppc_stub_global_entry
];
4120 /* Number of stubs against global syms. */
4121 unsigned long stub_globals
;
4123 /* Set if we're linking code with function descriptors. */
4124 unsigned int opd_abi
:1;
4126 /* Support for multiple toc sections. */
4127 unsigned int do_multi_toc
:1;
4128 unsigned int multi_toc_needed
:1;
4129 unsigned int second_toc_pass
:1;
4130 unsigned int do_toc_opt
:1;
4132 /* Set if tls optimization is enabled. */
4133 unsigned int do_tls_opt
:1;
4136 unsigned int stub_error
:1;
4138 /* Whether func_desc_adjust needs to be run over symbols. */
4139 unsigned int need_func_desc_adj
:1;
4141 /* Whether there exist local gnu indirect function resolvers,
4142 referenced by dynamic relocations. */
4143 unsigned int local_ifunc_resolver
:1;
4144 unsigned int maybe_local_ifunc_resolver
:1;
4146 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4147 unsigned int has_plt_localentry0
:1;
4149 /* Incremented every time we size stubs. */
4150 unsigned int stub_iteration
;
4152 /* Small local sym cache. */
4153 struct sym_cache sym_cache
;
4156 /* Rename some of the generic section flags to better document how they
4159 /* Nonzero if this section has TLS related relocations. */
4160 #define has_tls_reloc sec_flg0
4162 /* Nonzero if this section has a call to __tls_get_addr. */
4163 #define has_tls_get_addr_call sec_flg1
4165 /* Nonzero if this section has any toc or got relocs. */
4166 #define has_toc_reloc sec_flg2
4168 /* Nonzero if this section has a call to another section that uses
4170 #define makes_toc_func_call sec_flg3
4172 /* Recursion protection when determining above flag. */
4173 #define call_check_in_progress sec_flg4
4174 #define call_check_done sec_flg5
4176 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4178 #define ppc_hash_table(p) \
4179 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4180 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4182 #define ppc_stub_hash_lookup(table, string, create, copy) \
4183 ((struct ppc_stub_hash_entry *) \
4184 bfd_hash_lookup ((table), (string), (create), (copy)))
4186 #define ppc_branch_hash_lookup(table, string, create, copy) \
4187 ((struct ppc_branch_hash_entry *) \
4188 bfd_hash_lookup ((table), (string), (create), (copy)))
4190 /* Create an entry in the stub hash table. */
4192 static struct bfd_hash_entry
*
4193 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4194 struct bfd_hash_table
*table
,
4197 /* Allocate the structure if it has not already been allocated by a
4201 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4206 /* Call the allocation method of the superclass. */
4207 entry
= bfd_hash_newfunc (entry
, table
, string
);
4210 struct ppc_stub_hash_entry
*eh
;
4212 /* Initialize the local fields. */
4213 eh
= (struct ppc_stub_hash_entry
*) entry
;
4214 eh
->stub_type
= ppc_stub_none
;
4216 eh
->stub_offset
= 0;
4217 eh
->target_value
= 0;
4218 eh
->target_section
= NULL
;
4227 /* Create an entry in the branch hash table. */
4229 static struct bfd_hash_entry
*
4230 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4231 struct bfd_hash_table
*table
,
4234 /* Allocate the structure if it has not already been allocated by a
4238 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4243 /* Call the allocation method of the superclass. */
4244 entry
= bfd_hash_newfunc (entry
, table
, string
);
4247 struct ppc_branch_hash_entry
*eh
;
4249 /* Initialize the local fields. */
4250 eh
= (struct ppc_branch_hash_entry
*) entry
;
4258 /* Create an entry in a ppc64 ELF linker hash table. */
4260 static struct bfd_hash_entry
*
4261 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4262 struct bfd_hash_table
*table
,
4265 /* Allocate the structure if it has not already been allocated by a
4269 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4274 /* Call the allocation method of the superclass. */
4275 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4278 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4280 memset (&eh
->u
.stub_cache
, 0,
4281 (sizeof (struct ppc_link_hash_entry
)
4282 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4284 /* When making function calls, old ABI code references function entry
4285 points (dot symbols), while new ABI code references the function
4286 descriptor symbol. We need to make any combination of reference and
4287 definition work together, without breaking archive linking.
4289 For a defined function "foo" and an undefined call to "bar":
4290 An old object defines "foo" and ".foo", references ".bar" (possibly
4292 A new object defines "foo" and references "bar".
4294 A new object thus has no problem with its undefined symbols being
4295 satisfied by definitions in an old object. On the other hand, the
4296 old object won't have ".bar" satisfied by a new object.
4298 Keep a list of newly added dot-symbols. */
4300 if (string
[0] == '.')
4302 struct ppc_link_hash_table
*htab
;
4304 htab
= (struct ppc_link_hash_table
*) table
;
4305 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4306 htab
->dot_syms
= eh
;
4313 struct tocsave_entry
{
4319 tocsave_htab_hash (const void *p
)
4321 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4322 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4326 tocsave_htab_eq (const void *p1
, const void *p2
)
4328 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4329 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4330 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4333 /* Destroy a ppc64 ELF linker hash table. */
4336 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4338 struct ppc_link_hash_table
*htab
;
4340 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4341 if (htab
->tocsave_htab
)
4342 htab_delete (htab
->tocsave_htab
);
4343 bfd_hash_table_free (&htab
->branch_hash_table
);
4344 bfd_hash_table_free (&htab
->stub_hash_table
);
4345 _bfd_elf_link_hash_table_free (obfd
);
4348 /* Create a ppc64 ELF linker hash table. */
4350 static struct bfd_link_hash_table
*
4351 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4353 struct ppc_link_hash_table
*htab
;
4354 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4356 htab
= bfd_zmalloc (amt
);
4360 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4361 sizeof (struct ppc_link_hash_entry
),
4368 /* Init the stub hash table too. */
4369 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4370 sizeof (struct ppc_stub_hash_entry
)))
4372 _bfd_elf_link_hash_table_free (abfd
);
4376 /* And the branch hash table. */
4377 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4378 sizeof (struct ppc_branch_hash_entry
)))
4380 bfd_hash_table_free (&htab
->stub_hash_table
);
4381 _bfd_elf_link_hash_table_free (abfd
);
4385 htab
->tocsave_htab
= htab_try_create (1024,
4389 if (htab
->tocsave_htab
== NULL
)
4391 ppc64_elf_link_hash_table_free (abfd
);
4394 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4396 /* Initializing two fields of the union is just cosmetic. We really
4397 only care about glist, but when compiled on a 32-bit host the
4398 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4399 debugger inspection of these fields look nicer. */
4400 htab
->elf
.init_got_refcount
.refcount
= 0;
4401 htab
->elf
.init_got_refcount
.glist
= NULL
;
4402 htab
->elf
.init_plt_refcount
.refcount
= 0;
4403 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4404 htab
->elf
.init_got_offset
.offset
= 0;
4405 htab
->elf
.init_got_offset
.glist
= NULL
;
4406 htab
->elf
.init_plt_offset
.offset
= 0;
4407 htab
->elf
.init_plt_offset
.glist
= NULL
;
4409 return &htab
->elf
.root
;
4412 /* Create sections for linker generated code. */
4415 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4417 struct ppc_link_hash_table
*htab
;
4420 htab
= ppc_hash_table (info
);
4422 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4423 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4424 if (htab
->params
->save_restore_funcs
)
4426 /* Create .sfpr for code to save and restore fp regs. */
4427 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4429 if (htab
->sfpr
== NULL
4430 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4434 if (bfd_link_relocatable (info
))
4437 /* Create .glink for lazy dynamic linking support. */
4438 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4440 if (htab
->glink
== NULL
4441 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4444 if (!info
->no_ld_generated_unwind_info
)
4446 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4447 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4448 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4451 if (htab
->glink_eh_frame
== NULL
4452 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4456 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4457 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4458 if (htab
->elf
.iplt
== NULL
4459 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4462 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4463 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4465 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4466 if (htab
->elf
.irelplt
== NULL
4467 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4470 /* Create branch lookup table for plt_branch stubs. */
4471 flags
= (SEC_ALLOC
| SEC_LOAD
4472 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4473 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4475 if (htab
->brlt
== NULL
4476 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4479 if (!bfd_link_pic (info
))
4482 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4483 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4484 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4487 if (htab
->relbrlt
== NULL
4488 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4494 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4497 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4498 struct ppc64_elf_params
*params
)
4500 struct ppc_link_hash_table
*htab
;
4502 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4504 /* Always hook our dynamic sections into the first bfd, which is the
4505 linker created stub bfd. This ensures that the GOT header is at
4506 the start of the output TOC section. */
4507 htab
= ppc_hash_table (info
);
4508 htab
->elf
.dynobj
= params
->stub_bfd
;
4509 htab
->params
= params
;
4511 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4514 /* Build a name for an entry in the stub hash table. */
4517 ppc_stub_name (const asection
*input_section
,
4518 const asection
*sym_sec
,
4519 const struct ppc_link_hash_entry
*h
,
4520 const Elf_Internal_Rela
*rel
)
4525 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4526 offsets from a sym as a branch target? In fact, we could
4527 probably assume the addend is always zero. */
4528 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4532 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4533 stub_name
= bfd_malloc (len
);
4534 if (stub_name
== NULL
)
4537 len
= sprintf (stub_name
, "%08x.%s+%x",
4538 input_section
->id
& 0xffffffff,
4539 h
->elf
.root
.root
.string
,
4540 (int) rel
->r_addend
& 0xffffffff);
4544 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4545 stub_name
= bfd_malloc (len
);
4546 if (stub_name
== NULL
)
4549 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4550 input_section
->id
& 0xffffffff,
4551 sym_sec
->id
& 0xffffffff,
4552 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4553 (int) rel
->r_addend
& 0xffffffff);
4555 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4556 stub_name
[len
- 2] = 0;
4560 /* Look up an entry in the stub hash. Stub entries are cached because
4561 creating the stub name takes a bit of time. */
4563 static struct ppc_stub_hash_entry
*
4564 ppc_get_stub_entry (const asection
*input_section
,
4565 const asection
*sym_sec
,
4566 struct ppc_link_hash_entry
*h
,
4567 const Elf_Internal_Rela
*rel
,
4568 struct ppc_link_hash_table
*htab
)
4570 struct ppc_stub_hash_entry
*stub_entry
;
4571 struct map_stub
*group
;
4573 /* If this input section is part of a group of sections sharing one
4574 stub section, then use the id of the first section in the group.
4575 Stub names need to include a section id, as there may well be
4576 more than one stub used to reach say, printf, and we need to
4577 distinguish between them. */
4578 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4582 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4583 && h
->u
.stub_cache
->h
== h
4584 && h
->u
.stub_cache
->group
== group
)
4586 stub_entry
= h
->u
.stub_cache
;
4592 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4593 if (stub_name
== NULL
)
4596 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4597 stub_name
, FALSE
, FALSE
);
4599 h
->u
.stub_cache
= stub_entry
;
4607 /* Add a new stub entry to the stub hash. Not all fields of the new
4608 stub entry are initialised. */
4610 static struct ppc_stub_hash_entry
*
4611 ppc_add_stub (const char *stub_name
,
4613 struct bfd_link_info
*info
)
4615 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4616 struct map_stub
*group
;
4619 struct ppc_stub_hash_entry
*stub_entry
;
4621 group
= htab
->sec_info
[section
->id
].u
.group
;
4622 link_sec
= group
->link_sec
;
4623 stub_sec
= group
->stub_sec
;
4624 if (stub_sec
== NULL
)
4630 namelen
= strlen (link_sec
->name
);
4631 len
= namelen
+ sizeof (STUB_SUFFIX
);
4632 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4636 memcpy (s_name
, link_sec
->name
, namelen
);
4637 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4638 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4639 if (stub_sec
== NULL
)
4641 group
->stub_sec
= stub_sec
;
4644 /* Enter this entry into the linker stub hash table. */
4645 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4647 if (stub_entry
== NULL
)
4649 /* xgettext:c-format */
4650 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4651 section
->owner
, stub_name
);
4655 stub_entry
->group
= group
;
4656 stub_entry
->stub_offset
= 0;
4660 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4661 not already done. */
4664 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4666 asection
*got
, *relgot
;
4668 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4670 if (!is_ppc64_elf (abfd
))
4676 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4679 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4680 | SEC_LINKER_CREATED
);
4682 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4684 || !bfd_set_section_alignment (abfd
, got
, 3))
4687 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4688 flags
| SEC_READONLY
);
4690 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4693 ppc64_elf_tdata (abfd
)->got
= got
;
4694 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4698 /* Follow indirect and warning symbol links. */
4700 static inline struct bfd_link_hash_entry
*
4701 follow_link (struct bfd_link_hash_entry
*h
)
4703 while (h
->type
== bfd_link_hash_indirect
4704 || h
->type
== bfd_link_hash_warning
)
4709 static inline struct elf_link_hash_entry
*
4710 elf_follow_link (struct elf_link_hash_entry
*h
)
4712 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4715 static inline struct ppc_link_hash_entry
*
4716 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4718 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4721 /* Merge PLT info on FROM with that on TO. */
4724 move_plt_plist (struct ppc_link_hash_entry
*from
,
4725 struct ppc_link_hash_entry
*to
)
4727 if (from
->elf
.plt
.plist
!= NULL
)
4729 if (to
->elf
.plt
.plist
!= NULL
)
4731 struct plt_entry
**entp
;
4732 struct plt_entry
*ent
;
4734 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4736 struct plt_entry
*dent
;
4738 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4739 if (dent
->addend
== ent
->addend
)
4741 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4748 *entp
= to
->elf
.plt
.plist
;
4751 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4752 from
->elf
.plt
.plist
= NULL
;
4756 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4759 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4760 struct elf_link_hash_entry
*dir
,
4761 struct elf_link_hash_entry
*ind
)
4763 struct ppc_link_hash_entry
*edir
, *eind
;
4765 edir
= (struct ppc_link_hash_entry
*) dir
;
4766 eind
= (struct ppc_link_hash_entry
*) ind
;
4768 edir
->is_func
|= eind
->is_func
;
4769 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4770 edir
->tls_mask
|= eind
->tls_mask
;
4771 if (eind
->oh
!= NULL
)
4772 edir
->oh
= ppc_follow_link (eind
->oh
);
4774 /* If called to transfer flags for a weakdef during processing
4775 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4776 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4777 if (!(ELIMINATE_COPY_RELOCS
4778 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4779 && edir
->elf
.dynamic_adjusted
))
4780 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4782 if (edir
->elf
.versioned
!= versioned_hidden
)
4783 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4784 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4785 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4786 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4787 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4789 /* If we were called to copy over info for a weak sym, don't copy
4790 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4791 in order to simplify readonly_dynrelocs and save a field in the
4792 symbol hash entry, but that means dyn_relocs can't be used in any
4793 tests about a specific symbol, or affect other symbol flags which
4795 Chain weakdefs so we can get from the weakdef back to an alias.
4796 The list is circular so that we don't need to use u.weakdef as
4797 well as this list to look at all aliases. */
4798 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4800 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4805 cur
= edir
->weakref
;
4810 /* We can be called twice for the same symbols.
4811 Don't make multiple loops. */
4815 } while (cur
!= edir
);
4817 next
= add
->weakref
;
4820 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4821 edir
->weakref
= add
;
4824 } while (add
!= NULL
&& add
!= eind
);
4828 /* Copy over any dynamic relocs we may have on the indirect sym. */
4829 if (eind
->dyn_relocs
!= NULL
)
4831 if (edir
->dyn_relocs
!= NULL
)
4833 struct elf_dyn_relocs
**pp
;
4834 struct elf_dyn_relocs
*p
;
4836 /* Add reloc counts against the indirect sym to the direct sym
4837 list. Merge any entries against the same section. */
4838 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4840 struct elf_dyn_relocs
*q
;
4842 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4843 if (q
->sec
== p
->sec
)
4845 q
->pc_count
+= p
->pc_count
;
4846 q
->count
+= p
->count
;
4853 *pp
= edir
->dyn_relocs
;
4856 edir
->dyn_relocs
= eind
->dyn_relocs
;
4857 eind
->dyn_relocs
= NULL
;
4860 /* Copy over got entries that we may have already seen to the
4861 symbol which just became indirect. */
4862 if (eind
->elf
.got
.glist
!= NULL
)
4864 if (edir
->elf
.got
.glist
!= NULL
)
4866 struct got_entry
**entp
;
4867 struct got_entry
*ent
;
4869 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4871 struct got_entry
*dent
;
4873 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4874 if (dent
->addend
== ent
->addend
4875 && dent
->owner
== ent
->owner
4876 && dent
->tls_type
== ent
->tls_type
)
4878 dent
->got
.refcount
+= ent
->got
.refcount
;
4885 *entp
= edir
->elf
.got
.glist
;
4888 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4889 eind
->elf
.got
.glist
= NULL
;
4892 /* And plt entries. */
4893 move_plt_plist (eind
, edir
);
4895 if (eind
->elf
.dynindx
!= -1)
4897 if (edir
->elf
.dynindx
!= -1)
4898 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4899 edir
->elf
.dynstr_index
);
4900 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4901 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4902 eind
->elf
.dynindx
= -1;
4903 eind
->elf
.dynstr_index
= 0;
4907 /* Find the function descriptor hash entry from the given function code
4908 hash entry FH. Link the entries via their OH fields. */
4910 static struct ppc_link_hash_entry
*
4911 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4913 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4917 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4919 fdh
= (struct ppc_link_hash_entry
*)
4920 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4924 fdh
->is_func_descriptor
= 1;
4930 fdh
= ppc_follow_link (fdh
);
4931 fdh
->is_func_descriptor
= 1;
4936 /* Make a fake function descriptor sym for the undefined code sym FH. */
4938 static struct ppc_link_hash_entry
*
4939 make_fdh (struct bfd_link_info
*info
,
4940 struct ppc_link_hash_entry
*fh
)
4942 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4943 struct bfd_link_hash_entry
*bh
= NULL
;
4944 struct ppc_link_hash_entry
*fdh
;
4945 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4949 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4950 fh
->elf
.root
.root
.string
+ 1,
4951 flags
, bfd_und_section_ptr
, 0,
4952 NULL
, FALSE
, FALSE
, &bh
))
4955 fdh
= (struct ppc_link_hash_entry
*) bh
;
4956 fdh
->elf
.non_elf
= 0;
4958 fdh
->is_func_descriptor
= 1;
4965 /* Fix function descriptor symbols defined in .opd sections to be
4969 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4970 struct bfd_link_info
*info
,
4971 Elf_Internal_Sym
*isym
,
4973 flagword
*flags ATTRIBUTE_UNUSED
,
4977 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4978 && (ibfd
->flags
& DYNAMIC
) == 0
4979 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4980 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4983 && strcmp ((*sec
)->name
, ".opd") == 0)
4987 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4988 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4989 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4991 /* If the symbol is a function defined in .opd, and the function
4992 code is in a discarded group, let it appear to be undefined. */
4993 if (!bfd_link_relocatable (info
)
4994 && (*sec
)->reloc_count
!= 0
4995 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4996 FALSE
) != (bfd_vma
) -1
4997 && discarded_section (code_sec
))
4999 *sec
= bfd_und_section_ptr
;
5000 isym
->st_shndx
= SHN_UNDEF
;
5003 else if (*sec
!= NULL
5004 && strcmp ((*sec
)->name
, ".toc") == 0
5005 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
5007 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5009 htab
->params
->object_in_toc
= 1;
5012 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5014 if (abiversion (ibfd
) == 0)
5015 set_abiversion (ibfd
, 2);
5016 else if (abiversion (ibfd
) == 1)
5018 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
5019 " for ABI version 1\n"), name
);
5020 bfd_set_error (bfd_error_bad_value
);
5028 /* Merge non-visibility st_other attributes: local entry point. */
5031 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5032 const Elf_Internal_Sym
*isym
,
5033 bfd_boolean definition
,
5034 bfd_boolean dynamic
)
5036 if (definition
&& (!dynamic
|| !h
->def_regular
))
5037 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5038 | ELF_ST_VISIBILITY (h
->other
));
5041 /* Hook called on merging a symbol. We use this to clear "fake" since
5042 we now have a real symbol. */
5045 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5046 const Elf_Internal_Sym
*isym
,
5047 asection
**psec ATTRIBUTE_UNUSED
,
5048 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5049 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5050 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5051 const asection
*oldsec ATTRIBUTE_UNUSED
)
5053 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5054 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5055 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5059 /* This function makes an old ABI object reference to ".bar" cause the
5060 inclusion of a new ABI object archive that defines "bar".
5061 NAME is a symbol defined in an archive. Return a symbol in the hash
5062 table that might be satisfied by the archive symbols. */
5064 static struct elf_link_hash_entry
*
5065 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5066 struct bfd_link_info
*info
,
5069 struct elf_link_hash_entry
*h
;
5073 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5075 /* Don't return this sym if it is a fake function descriptor
5076 created by add_symbol_adjust. */
5077 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5083 len
= strlen (name
);
5084 dot_name
= bfd_alloc (abfd
, len
+ 2);
5085 if (dot_name
== NULL
)
5086 return (struct elf_link_hash_entry
*) 0 - 1;
5088 memcpy (dot_name
+ 1, name
, len
+ 1);
5089 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5090 bfd_release (abfd
, dot_name
);
5094 /* This function satisfies all old ABI object references to ".bar" if a
5095 new ABI object defines "bar". Well, at least, undefined dot symbols
5096 are made weak. This stops later archive searches from including an
5097 object if we already have a function descriptor definition. It also
5098 prevents the linker complaining about undefined symbols.
5099 We also check and correct mismatched symbol visibility here. The
5100 most restrictive visibility of the function descriptor and the
5101 function entry symbol is used. */
5104 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5106 struct ppc_link_hash_table
*htab
;
5107 struct ppc_link_hash_entry
*fdh
;
5109 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5110 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5112 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5115 if (eh
->elf
.root
.root
.string
[0] != '.')
5118 htab
= ppc_hash_table (info
);
5122 fdh
= lookup_fdh (eh
, htab
);
5124 && !bfd_link_relocatable (info
)
5125 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5126 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5127 && eh
->elf
.ref_regular
)
5129 /* Make an undefined function descriptor sym, in order to
5130 pull in an --as-needed shared lib. Archives are handled
5132 fdh
= make_fdh (info
, eh
);
5139 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5140 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5142 /* Make both descriptor and entry symbol have the most
5143 constraining visibility of either symbol. */
5144 if (entry_vis
< descr_vis
)
5145 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5146 else if (entry_vis
> descr_vis
)
5147 eh
->elf
.other
+= descr_vis
- entry_vis
;
5149 /* Propagate reference flags from entry symbol to function
5150 descriptor symbol. */
5151 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5152 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5153 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5154 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5156 if (!fdh
->elf
.forced_local
5157 && fdh
->elf
.dynindx
== -1
5158 && fdh
->elf
.versioned
!= versioned_hidden
5159 && (bfd_link_dll (info
)
5160 || fdh
->elf
.def_dynamic
5161 || fdh
->elf
.ref_dynamic
)
5162 && (eh
->elf
.ref_regular
5163 || eh
->elf
.def_regular
))
5165 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5173 /* Set up opd section info and abiversion for IBFD, and process list
5174 of dot-symbols we made in link_hash_newfunc. */
5177 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5179 struct ppc_link_hash_table
*htab
;
5180 struct ppc_link_hash_entry
**p
, *eh
;
5181 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5183 if (opd
!= NULL
&& opd
->size
!= 0)
5185 if (abiversion (ibfd
) == 0)
5186 set_abiversion (ibfd
, 1);
5187 else if (abiversion (ibfd
) >= 2)
5189 /* xgettext:c-format */
5190 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5192 ibfd
, abiversion (ibfd
));
5193 bfd_set_error (bfd_error_bad_value
);
5197 if ((ibfd
->flags
& DYNAMIC
) == 0
5198 && (opd
->flags
& SEC_RELOC
) != 0
5199 && opd
->reloc_count
!= 0
5200 && !bfd_is_abs_section (opd
->output_section
))
5202 /* Garbage collection needs some extra help with .opd sections.
5203 We don't want to necessarily keep everything referenced by
5204 relocs in .opd, as that would keep all functions. Instead,
5205 if we reference an .opd symbol (a function descriptor), we
5206 want to keep the function code symbol's section. This is
5207 easy for global symbols, but for local syms we need to keep
5208 information about the associated function section. */
5210 asection
**opd_sym_map
;
5212 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5213 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5214 if (opd_sym_map
== NULL
)
5216 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5217 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5218 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5222 if (!is_ppc64_elf (info
->output_bfd
))
5224 htab
= ppc_hash_table (info
);
5228 /* For input files without an explicit abiversion in e_flags
5229 we should have flagged any with symbol st_other bits set
5230 as ELFv1 and above flagged those with .opd as ELFv2.
5231 Set the output abiversion if not yet set, and for any input
5232 still ambiguous, take its abiversion from the output.
5233 Differences in ABI are reported later. */
5234 if (abiversion (info
->output_bfd
) == 0)
5235 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5236 else if (abiversion (ibfd
) == 0)
5237 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5239 p
= &htab
->dot_syms
;
5240 while ((eh
= *p
) != NULL
)
5243 if (&eh
->elf
== htab
->elf
.hgot
)
5245 else if (htab
->elf
.hgot
== NULL
5246 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5247 htab
->elf
.hgot
= &eh
->elf
;
5248 else if (abiversion (ibfd
) <= 1)
5250 htab
->need_func_desc_adj
= 1;
5251 if (!add_symbol_adjust (eh
, info
))
5254 p
= &eh
->u
.next_dot_sym
;
5259 /* Undo hash table changes when an --as-needed input file is determined
5260 not to be needed. */
5263 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5264 struct bfd_link_info
*info
,
5265 enum notice_asneeded_action act
)
5267 if (act
== notice_not_needed
)
5269 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5274 htab
->dot_syms
= NULL
;
5276 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5279 /* If --just-symbols against a final linked binary, then assume we need
5280 toc adjusting stubs when calling functions defined there. */
5283 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5285 if ((sec
->flags
& SEC_CODE
) != 0
5286 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5287 && is_ppc64_elf (sec
->owner
))
5289 if (abiversion (sec
->owner
) >= 2
5290 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5291 sec
->has_toc_reloc
= 1;
5293 _bfd_elf_link_just_syms (sec
, info
);
5296 static struct plt_entry
**
5297 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5298 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5300 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5301 struct plt_entry
**local_plt
;
5302 unsigned char *local_got_tls_masks
;
5304 if (local_got_ents
== NULL
)
5306 bfd_size_type size
= symtab_hdr
->sh_info
;
5308 size
*= (sizeof (*local_got_ents
)
5309 + sizeof (*local_plt
)
5310 + sizeof (*local_got_tls_masks
));
5311 local_got_ents
= bfd_zalloc (abfd
, size
);
5312 if (local_got_ents
== NULL
)
5314 elf_local_got_ents (abfd
) = local_got_ents
;
5317 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5319 struct got_entry
*ent
;
5321 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5322 if (ent
->addend
== r_addend
5323 && ent
->owner
== abfd
5324 && ent
->tls_type
== tls_type
)
5328 bfd_size_type amt
= sizeof (*ent
);
5329 ent
= bfd_alloc (abfd
, amt
);
5332 ent
->next
= local_got_ents
[r_symndx
];
5333 ent
->addend
= r_addend
;
5335 ent
->tls_type
= tls_type
;
5336 ent
->is_indirect
= FALSE
;
5337 ent
->got
.refcount
= 0;
5338 local_got_ents
[r_symndx
] = ent
;
5340 ent
->got
.refcount
+= 1;
5343 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5344 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5345 local_got_tls_masks
[r_symndx
] |= tls_type
;
5347 return local_plt
+ r_symndx
;
5351 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5353 struct plt_entry
*ent
;
5355 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5356 if (ent
->addend
== addend
)
5360 bfd_size_type amt
= sizeof (*ent
);
5361 ent
= bfd_alloc (abfd
, amt
);
5365 ent
->addend
= addend
;
5366 ent
->plt
.refcount
= 0;
5369 ent
->plt
.refcount
+= 1;
5374 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5376 return (r_type
== R_PPC64_REL24
5377 || r_type
== R_PPC64_REL14
5378 || r_type
== R_PPC64_REL14_BRTAKEN
5379 || r_type
== R_PPC64_REL14_BRNTAKEN
5380 || r_type
== R_PPC64_ADDR24
5381 || r_type
== R_PPC64_ADDR14
5382 || r_type
== R_PPC64_ADDR14_BRTAKEN
5383 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5386 /* Look through the relocs for a section during the first phase, and
5387 calculate needed space in the global offset table, procedure
5388 linkage table, and dynamic reloc sections. */
5391 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5392 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5394 struct ppc_link_hash_table
*htab
;
5395 Elf_Internal_Shdr
*symtab_hdr
;
5396 struct elf_link_hash_entry
**sym_hashes
;
5397 const Elf_Internal_Rela
*rel
;
5398 const Elf_Internal_Rela
*rel_end
;
5400 asection
**opd_sym_map
;
5401 struct elf_link_hash_entry
*tga
, *dottga
;
5403 if (bfd_link_relocatable (info
))
5406 /* Don't do anything special with non-loaded, non-alloced sections.
5407 In particular, any relocs in such sections should not affect GOT
5408 and PLT reference counting (ie. we don't allow them to create GOT
5409 or PLT entries), there's no possibility or desire to optimize TLS
5410 relocs, and there's not much point in propagating relocs to shared
5411 libs that the dynamic linker won't relocate. */
5412 if ((sec
->flags
& SEC_ALLOC
) == 0)
5415 BFD_ASSERT (is_ppc64_elf (abfd
));
5417 htab
= ppc_hash_table (info
);
5421 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5422 FALSE
, FALSE
, TRUE
);
5423 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5424 FALSE
, FALSE
, TRUE
);
5425 symtab_hdr
= &elf_symtab_hdr (abfd
);
5426 sym_hashes
= elf_sym_hashes (abfd
);
5429 if (ppc64_elf_section_data (sec
) != NULL
5430 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5431 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5433 rel_end
= relocs
+ sec
->reloc_count
;
5434 for (rel
= relocs
; rel
< rel_end
; rel
++)
5436 unsigned long r_symndx
;
5437 struct elf_link_hash_entry
*h
;
5438 enum elf_ppc64_reloc_type r_type
;
5440 struct _ppc64_elf_section_data
*ppc64_sec
;
5441 struct plt_entry
**ifunc
, **plt_list
;
5443 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5444 if (r_symndx
< symtab_hdr
->sh_info
)
5448 struct ppc_link_hash_entry
*eh
;
5450 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5451 h
= elf_follow_link (h
);
5452 eh
= (struct ppc_link_hash_entry
*) h
;
5454 /* PR15323, ref flags aren't set for references in the same
5456 h
->root
.non_ir_ref_regular
= 1;
5457 if (eh
->is_func
&& eh
->oh
!= NULL
)
5458 eh
->oh
->elf
.root
.non_ir_ref_regular
= 1;
5460 if (h
== htab
->elf
.hgot
)
5461 sec
->has_toc_reloc
= 1;
5468 if (h
->type
== STT_GNU_IFUNC
)
5471 ifunc
= &h
->plt
.plist
;
5476 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5481 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5483 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5484 rel
->r_addend
, PLT_IFUNC
);
5490 r_type
= ELF64_R_TYPE (rel
->r_info
);
5495 /* These special tls relocs tie a call to __tls_get_addr with
5496 its parameter symbol. */
5499 case R_PPC64_GOT_TLSLD16
:
5500 case R_PPC64_GOT_TLSLD16_LO
:
5501 case R_PPC64_GOT_TLSLD16_HI
:
5502 case R_PPC64_GOT_TLSLD16_HA
:
5503 tls_type
= TLS_TLS
| TLS_LD
;
5506 case R_PPC64_GOT_TLSGD16
:
5507 case R_PPC64_GOT_TLSGD16_LO
:
5508 case R_PPC64_GOT_TLSGD16_HI
:
5509 case R_PPC64_GOT_TLSGD16_HA
:
5510 tls_type
= TLS_TLS
| TLS_GD
;
5513 case R_PPC64_GOT_TPREL16_DS
:
5514 case R_PPC64_GOT_TPREL16_LO_DS
:
5515 case R_PPC64_GOT_TPREL16_HI
:
5516 case R_PPC64_GOT_TPREL16_HA
:
5517 if (bfd_link_dll (info
))
5518 info
->flags
|= DF_STATIC_TLS
;
5519 tls_type
= TLS_TLS
| TLS_TPREL
;
5522 case R_PPC64_GOT_DTPREL16_DS
:
5523 case R_PPC64_GOT_DTPREL16_LO_DS
:
5524 case R_PPC64_GOT_DTPREL16_HI
:
5525 case R_PPC64_GOT_DTPREL16_HA
:
5526 tls_type
= TLS_TLS
| TLS_DTPREL
;
5528 sec
->has_tls_reloc
= 1;
5532 case R_PPC64_GOT16_DS
:
5533 case R_PPC64_GOT16_HA
:
5534 case R_PPC64_GOT16_HI
:
5535 case R_PPC64_GOT16_LO
:
5536 case R_PPC64_GOT16_LO_DS
:
5537 /* This symbol requires a global offset table entry. */
5538 sec
->has_toc_reloc
= 1;
5539 if (r_type
== R_PPC64_GOT_TLSLD16
5540 || r_type
== R_PPC64_GOT_TLSGD16
5541 || r_type
== R_PPC64_GOT_TPREL16_DS
5542 || r_type
== R_PPC64_GOT_DTPREL16_DS
5543 || r_type
== R_PPC64_GOT16
5544 || r_type
== R_PPC64_GOT16_DS
)
5546 htab
->do_multi_toc
= 1;
5547 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5550 if (ppc64_elf_tdata (abfd
)->got
== NULL
5551 && !create_got_section (abfd
, info
))
5556 struct ppc_link_hash_entry
*eh
;
5557 struct got_entry
*ent
;
5559 eh
= (struct ppc_link_hash_entry
*) h
;
5560 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5561 if (ent
->addend
== rel
->r_addend
5562 && ent
->owner
== abfd
5563 && ent
->tls_type
== tls_type
)
5567 bfd_size_type amt
= sizeof (*ent
);
5568 ent
= bfd_alloc (abfd
, amt
);
5571 ent
->next
= eh
->elf
.got
.glist
;
5572 ent
->addend
= rel
->r_addend
;
5574 ent
->tls_type
= tls_type
;
5575 ent
->is_indirect
= FALSE
;
5576 ent
->got
.refcount
= 0;
5577 eh
->elf
.got
.glist
= ent
;
5579 ent
->got
.refcount
+= 1;
5580 eh
->tls_mask
|= tls_type
;
5583 /* This is a global offset table entry for a local symbol. */
5584 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5585 rel
->r_addend
, tls_type
))
5588 /* We may also need a plt entry if the symbol turns out to be
5590 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5592 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5597 case R_PPC64_PLT16_HA
:
5598 case R_PPC64_PLT16_HI
:
5599 case R_PPC64_PLT16_LO
:
5602 /* This symbol requires a procedure linkage table entry. */
5607 if (h
->root
.root
.string
[0] == '.'
5608 && h
->root
.root
.string
[1] != '\0')
5609 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5610 plt_list
= &h
->plt
.plist
;
5612 if (plt_list
== NULL
)
5614 /* It does not make sense to have a procedure linkage
5615 table entry for a non-ifunc local symbol. */
5616 info
->callbacks
->einfo
5617 /* xgettext:c-format */
5618 (_("%H: %s reloc against local symbol\n"),
5619 abfd
, sec
, rel
->r_offset
,
5620 ppc64_elf_howto_table
[r_type
]->name
);
5621 bfd_set_error (bfd_error_bad_value
);
5624 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5628 /* The following relocations don't need to propagate the
5629 relocation if linking a shared object since they are
5630 section relative. */
5631 case R_PPC64_SECTOFF
:
5632 case R_PPC64_SECTOFF_LO
:
5633 case R_PPC64_SECTOFF_HI
:
5634 case R_PPC64_SECTOFF_HA
:
5635 case R_PPC64_SECTOFF_DS
:
5636 case R_PPC64_SECTOFF_LO_DS
:
5637 case R_PPC64_DTPREL16
:
5638 case R_PPC64_DTPREL16_LO
:
5639 case R_PPC64_DTPREL16_HI
:
5640 case R_PPC64_DTPREL16_HA
:
5641 case R_PPC64_DTPREL16_DS
:
5642 case R_PPC64_DTPREL16_LO_DS
:
5643 case R_PPC64_DTPREL16_HIGH
:
5644 case R_PPC64_DTPREL16_HIGHA
:
5645 case R_PPC64_DTPREL16_HIGHER
:
5646 case R_PPC64_DTPREL16_HIGHERA
:
5647 case R_PPC64_DTPREL16_HIGHEST
:
5648 case R_PPC64_DTPREL16_HIGHESTA
:
5653 case R_PPC64_REL16_LO
:
5654 case R_PPC64_REL16_HI
:
5655 case R_PPC64_REL16_HA
:
5656 case R_PPC64_REL16DX_HA
:
5659 /* Not supported as a dynamic relocation. */
5660 case R_PPC64_ADDR64_LOCAL
:
5661 if (bfd_link_pic (info
))
5663 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5665 /* xgettext:c-format */
5666 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5667 "in shared libraries and PIEs.\n"),
5668 abfd
, sec
, rel
->r_offset
,
5669 ppc64_elf_howto_table
[r_type
]->name
);
5670 bfd_set_error (bfd_error_bad_value
);
5676 case R_PPC64_TOC16_DS
:
5677 htab
->do_multi_toc
= 1;
5678 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5680 case R_PPC64_TOC16_LO
:
5681 case R_PPC64_TOC16_HI
:
5682 case R_PPC64_TOC16_HA
:
5683 case R_PPC64_TOC16_LO_DS
:
5684 sec
->has_toc_reloc
= 1;
5691 /* This relocation describes the C++ object vtable hierarchy.
5692 Reconstruct it for later use during GC. */
5693 case R_PPC64_GNU_VTINHERIT
:
5694 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5698 /* This relocation describes which C++ vtable entries are actually
5699 used. Record for later use during GC. */
5700 case R_PPC64_GNU_VTENTRY
:
5701 BFD_ASSERT (h
!= NULL
);
5703 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5708 case R_PPC64_REL14_BRTAKEN
:
5709 case R_PPC64_REL14_BRNTAKEN
:
5711 asection
*dest
= NULL
;
5713 /* Heuristic: If jumping outside our section, chances are
5714 we are going to need a stub. */
5717 /* If the sym is weak it may be overridden later, so
5718 don't assume we know where a weak sym lives. */
5719 if (h
->root
.type
== bfd_link_hash_defined
)
5720 dest
= h
->root
.u
.def
.section
;
5724 Elf_Internal_Sym
*isym
;
5726 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5731 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5735 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5744 if (h
->root
.root
.string
[0] == '.'
5745 && h
->root
.root
.string
[1] != '\0')
5746 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5748 if (h
== tga
|| h
== dottga
)
5750 sec
->has_tls_reloc
= 1;
5752 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5753 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5754 /* We have a new-style __tls_get_addr call with
5758 /* Mark this section as having an old-style call. */
5759 sec
->has_tls_get_addr_call
= 1;
5761 plt_list
= &h
->plt
.plist
;
5764 /* We may need a .plt entry if the function this reloc
5765 refers to is in a shared lib. */
5767 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5771 case R_PPC64_ADDR14
:
5772 case R_PPC64_ADDR14_BRNTAKEN
:
5773 case R_PPC64_ADDR14_BRTAKEN
:
5774 case R_PPC64_ADDR24
:
5777 case R_PPC64_TPREL64
:
5778 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5779 if (bfd_link_dll (info
))
5780 info
->flags
|= DF_STATIC_TLS
;
5783 case R_PPC64_DTPMOD64
:
5784 if (rel
+ 1 < rel_end
5785 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5786 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5787 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5789 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5792 case R_PPC64_DTPREL64
:
5793 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5795 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5796 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5797 /* This is the second reloc of a dtpmod, dtprel pair.
5798 Don't mark with TLS_DTPREL. */
5802 sec
->has_tls_reloc
= 1;
5805 struct ppc_link_hash_entry
*eh
;
5806 eh
= (struct ppc_link_hash_entry
*) h
;
5807 eh
->tls_mask
|= tls_type
;
5810 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5811 rel
->r_addend
, tls_type
))
5814 ppc64_sec
= ppc64_elf_section_data (sec
);
5815 if (ppc64_sec
->sec_type
!= sec_toc
)
5819 /* One extra to simplify get_tls_mask. */
5820 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5821 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5822 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5824 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5825 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5826 if (ppc64_sec
->u
.toc
.add
== NULL
)
5828 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5829 ppc64_sec
->sec_type
= sec_toc
;
5831 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5832 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5833 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5835 /* Mark the second slot of a GD or LD entry.
5836 -1 to indicate GD and -2 to indicate LD. */
5837 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5838 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5839 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5840 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5843 case R_PPC64_TPREL16
:
5844 case R_PPC64_TPREL16_LO
:
5845 case R_PPC64_TPREL16_HI
:
5846 case R_PPC64_TPREL16_HA
:
5847 case R_PPC64_TPREL16_DS
:
5848 case R_PPC64_TPREL16_LO_DS
:
5849 case R_PPC64_TPREL16_HIGH
:
5850 case R_PPC64_TPREL16_HIGHA
:
5851 case R_PPC64_TPREL16_HIGHER
:
5852 case R_PPC64_TPREL16_HIGHERA
:
5853 case R_PPC64_TPREL16_HIGHEST
:
5854 case R_PPC64_TPREL16_HIGHESTA
:
5855 if (bfd_link_dll (info
))
5856 info
->flags
|= DF_STATIC_TLS
;
5859 case R_PPC64_ADDR64
:
5860 if (opd_sym_map
!= NULL
5861 && rel
+ 1 < rel_end
5862 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5865 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5869 Elf_Internal_Sym
*isym
;
5871 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5876 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5877 if (s
!= NULL
&& s
!= sec
)
5878 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5883 case R_PPC64_ADDR16
:
5884 case R_PPC64_ADDR16_DS
:
5885 case R_PPC64_ADDR16_HA
:
5886 case R_PPC64_ADDR16_HI
:
5887 case R_PPC64_ADDR16_HIGH
:
5888 case R_PPC64_ADDR16_HIGHA
:
5889 case R_PPC64_ADDR16_HIGHER
:
5890 case R_PPC64_ADDR16_HIGHERA
:
5891 case R_PPC64_ADDR16_HIGHEST
:
5892 case R_PPC64_ADDR16_HIGHESTA
:
5893 case R_PPC64_ADDR16_LO
:
5894 case R_PPC64_ADDR16_LO_DS
:
5895 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5896 && rel
->r_addend
== 0)
5898 /* We may need a .plt entry if this reloc refers to a
5899 function in a shared lib. */
5900 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5902 h
->pointer_equality_needed
= 1;
5909 case R_PPC64_ADDR32
:
5910 case R_PPC64_UADDR16
:
5911 case R_PPC64_UADDR32
:
5912 case R_PPC64_UADDR64
:
5914 if (h
!= NULL
&& !bfd_link_pic (info
))
5915 /* We may need a copy reloc. */
5918 /* Don't propagate .opd relocs. */
5919 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5922 /* If we are creating a shared library, and this is a reloc
5923 against a global symbol, or a non PC relative reloc
5924 against a local symbol, then we need to copy the reloc
5925 into the shared library. However, if we are linking with
5926 -Bsymbolic, we do not need to copy a reloc against a
5927 global symbol which is defined in an object we are
5928 including in the link (i.e., DEF_REGULAR is set). At
5929 this point we have not seen all the input files, so it is
5930 possible that DEF_REGULAR is not set now but will be set
5931 later (it is never cleared). In case of a weak definition,
5932 DEF_REGULAR may be cleared later by a strong definition in
5933 a shared library. We account for that possibility below by
5934 storing information in the dyn_relocs field of the hash
5935 table entry. A similar situation occurs when creating
5936 shared libraries and symbol visibility changes render the
5939 If on the other hand, we are creating an executable, we
5940 may need to keep relocations for symbols satisfied by a
5941 dynamic library if we manage to avoid copy relocs for the
5944 if ((bfd_link_pic (info
)
5945 && (must_be_dyn_reloc (info
, r_type
)
5947 && (!SYMBOLIC_BIND (info
, h
)
5948 || h
->root
.type
== bfd_link_hash_defweak
5949 || !h
->def_regular
))))
5950 || (ELIMINATE_COPY_RELOCS
5951 && !bfd_link_pic (info
)
5953 && (h
->root
.type
== bfd_link_hash_defweak
5954 || !h
->def_regular
))
5955 || (!bfd_link_pic (info
)
5958 /* We must copy these reloc types into the output file.
5959 Create a reloc section in dynobj and make room for
5963 sreloc
= _bfd_elf_make_dynamic_reloc_section
5964 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5970 /* If this is a global symbol, we count the number of
5971 relocations we need for this symbol. */
5974 struct elf_dyn_relocs
*p
;
5975 struct elf_dyn_relocs
**head
;
5977 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5979 if (p
== NULL
|| p
->sec
!= sec
)
5981 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5991 if (!must_be_dyn_reloc (info
, r_type
))
5996 /* Track dynamic relocs needed for local syms too.
5997 We really need local syms available to do this
5999 struct ppc_dyn_relocs
*p
;
6000 struct ppc_dyn_relocs
**head
;
6001 bfd_boolean is_ifunc
;
6004 Elf_Internal_Sym
*isym
;
6006 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6011 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6015 vpp
= &elf_section_data (s
)->local_dynrel
;
6016 head
= (struct ppc_dyn_relocs
**) vpp
;
6017 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6019 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6021 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6023 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6029 p
->ifunc
= is_ifunc
;
6045 /* Merge backend specific data from an object file to the output
6046 object file when linking. */
6049 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6051 bfd
*obfd
= info
->output_bfd
;
6052 unsigned long iflags
, oflags
;
6054 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6057 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6060 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6063 iflags
= elf_elfheader (ibfd
)->e_flags
;
6064 oflags
= elf_elfheader (obfd
)->e_flags
;
6066 if (iflags
& ~EF_PPC64_ABI
)
6069 /* xgettext:c-format */
6070 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6071 bfd_set_error (bfd_error_bad_value
);
6074 else if (iflags
!= oflags
&& iflags
!= 0)
6077 /* xgettext:c-format */
6078 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6079 ibfd
, iflags
, oflags
);
6080 bfd_set_error (bfd_error_bad_value
);
6084 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6086 /* Merge Tag_compatibility attributes and any common GNU ones. */
6087 _bfd_elf_merge_object_attributes (ibfd
, info
);
6093 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6095 /* Print normal ELF private data. */
6096 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6098 if (elf_elfheader (abfd
)->e_flags
!= 0)
6102 fprintf (file
, _("private flags = 0x%lx:"),
6103 elf_elfheader (abfd
)->e_flags
);
6105 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6106 fprintf (file
, _(" [abiv%ld]"),
6107 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6114 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6115 of the code entry point, and its section, which must be in the same
6116 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6119 opd_entry_value (asection
*opd_sec
,
6121 asection
**code_sec
,
6123 bfd_boolean in_code_sec
)
6125 bfd
*opd_bfd
= opd_sec
->owner
;
6126 Elf_Internal_Rela
*relocs
;
6127 Elf_Internal_Rela
*lo
, *hi
, *look
;
6130 /* No relocs implies we are linking a --just-symbols object, or looking
6131 at a final linked executable with addr2line or somesuch. */
6132 if (opd_sec
->reloc_count
== 0)
6134 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6136 if (contents
== NULL
)
6138 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6139 return (bfd_vma
) -1;
6140 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6143 /* PR 17512: file: 64b9dfbb. */
6144 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6145 return (bfd_vma
) -1;
6147 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6148 if (code_sec
!= NULL
)
6150 asection
*sec
, *likely
= NULL
;
6156 && val
< sec
->vma
+ sec
->size
)
6162 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6164 && (sec
->flags
& SEC_LOAD
) != 0
6165 && (sec
->flags
& SEC_ALLOC
) != 0)
6170 if (code_off
!= NULL
)
6171 *code_off
= val
- likely
->vma
;
6177 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6179 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6181 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6182 /* PR 17512: file: df8e1fd6. */
6184 return (bfd_vma
) -1;
6186 /* Go find the opd reloc at the sym address. */
6188 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6192 look
= lo
+ (hi
- lo
) / 2;
6193 if (look
->r_offset
< offset
)
6195 else if (look
->r_offset
> offset
)
6199 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6201 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6202 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6204 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6205 asection
*sec
= NULL
;
6207 if (symndx
>= symtab_hdr
->sh_info
6208 && elf_sym_hashes (opd_bfd
) != NULL
)
6210 struct elf_link_hash_entry
**sym_hashes
;
6211 struct elf_link_hash_entry
*rh
;
6213 sym_hashes
= elf_sym_hashes (opd_bfd
);
6214 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6217 rh
= elf_follow_link (rh
);
6218 if (rh
->root
.type
!= bfd_link_hash_defined
6219 && rh
->root
.type
!= bfd_link_hash_defweak
)
6221 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6223 val
= rh
->root
.u
.def
.value
;
6224 sec
= rh
->root
.u
.def
.section
;
6231 Elf_Internal_Sym
*sym
;
6233 if (symndx
< symtab_hdr
->sh_info
)
6235 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6238 size_t symcnt
= symtab_hdr
->sh_info
;
6239 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6244 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6250 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6256 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6259 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6260 val
= sym
->st_value
;
6263 val
+= look
->r_addend
;
6264 if (code_off
!= NULL
)
6266 if (code_sec
!= NULL
)
6268 if (in_code_sec
&& *code_sec
!= sec
)
6273 if (sec
->output_section
!= NULL
)
6274 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6283 /* If the ELF symbol SYM might be a function in SEC, return the
6284 function size and set *CODE_OFF to the function's entry point,
6285 otherwise return zero. */
6287 static bfd_size_type
6288 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6293 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6294 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6298 if (!(sym
->flags
& BSF_SYNTHETIC
))
6299 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6301 if (strcmp (sym
->section
->name
, ".opd") == 0)
6303 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6304 bfd_vma symval
= sym
->value
;
6307 && opd
->adjust
!= NULL
6308 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6310 /* opd_entry_value will use cached relocs that have been
6311 adjusted, but with raw symbols. That means both local
6312 and global symbols need adjusting. */
6313 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6319 if (opd_entry_value (sym
->section
, symval
,
6320 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6322 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6323 symbol. This size has nothing to do with the code size of the
6324 function, which is what we're supposed to return, but the
6325 code size isn't available without looking up the dot-sym.
6326 However, doing that would be a waste of time particularly
6327 since elf_find_function will look at the dot-sym anyway.
6328 Now, elf_find_function will keep the largest size of any
6329 function sym found at the code address of interest, so return
6330 1 here to avoid it incorrectly caching a larger function size
6331 for a small function. This does mean we return the wrong
6332 size for a new-ABI function of size 24, but all that does is
6333 disable caching for such functions. */
6339 if (sym
->section
!= sec
)
6341 *code_off
= sym
->value
;
6348 /* Return true if symbol is a strong function defined in an ELFv2
6349 object with st_other localentry bits of zero, ie. its local entry
6350 point coincides with its global entry point. */
6353 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6356 && h
->type
== STT_FUNC
6357 && h
->root
.type
== bfd_link_hash_defined
6358 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6359 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6360 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6361 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6364 /* Return true if symbol is defined in a regular object file. */
6367 is_static_defined (struct elf_link_hash_entry
*h
)
6369 return ((h
->root
.type
== bfd_link_hash_defined
6370 || h
->root
.type
== bfd_link_hash_defweak
)
6371 && h
->root
.u
.def
.section
!= NULL
6372 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6375 /* If FDH is a function descriptor symbol, return the associated code
6376 entry symbol if it is defined. Return NULL otherwise. */
6378 static struct ppc_link_hash_entry
*
6379 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6381 if (fdh
->is_func_descriptor
)
6383 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6384 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6385 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6391 /* If FH is a function code entry symbol, return the associated
6392 function descriptor symbol if it is defined. Return NULL otherwise. */
6394 static struct ppc_link_hash_entry
*
6395 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6398 && fh
->oh
->is_func_descriptor
)
6400 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6401 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6402 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6408 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6410 /* Garbage collect sections, after first dealing with dot-symbols. */
6413 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6415 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6417 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6419 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6420 htab
->need_func_desc_adj
= 0;
6422 return bfd_elf_gc_sections (abfd
, info
);
6425 /* Mark all our entry sym sections, both opd and code section. */
6428 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6430 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6431 struct bfd_sym_chain
*sym
;
6436 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6438 struct ppc_link_hash_entry
*eh
, *fh
;
6441 eh
= (struct ppc_link_hash_entry
*)
6442 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6445 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6446 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6449 fh
= defined_code_entry (eh
);
6452 sec
= fh
->elf
.root
.u
.def
.section
;
6453 sec
->flags
|= SEC_KEEP
;
6455 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6456 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6457 eh
->elf
.root
.u
.def
.value
,
6458 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6459 sec
->flags
|= SEC_KEEP
;
6461 sec
= eh
->elf
.root
.u
.def
.section
;
6462 sec
->flags
|= SEC_KEEP
;
6466 /* Mark sections containing dynamically referenced symbols. When
6467 building shared libraries, we must assume that any visible symbol is
6471 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6473 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6474 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6475 struct ppc_link_hash_entry
*fdh
;
6476 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6478 /* Dynamic linking info is on the func descriptor sym. */
6479 fdh
= defined_func_desc (eh
);
6483 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6484 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6485 && (eh
->elf
.ref_dynamic
6486 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6487 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6488 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6489 && (!bfd_link_executable (info
)
6490 || info
->gc_keep_exported
6491 || info
->export_dynamic
6494 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6495 && (eh
->elf
.versioned
>= versioned
6496 || !bfd_hide_sym_by_version (info
->version_info
,
6497 eh
->elf
.root
.root
.string
)))))
6500 struct ppc_link_hash_entry
*fh
;
6502 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6504 /* Function descriptor syms cause the associated
6505 function code sym section to be marked. */
6506 fh
= defined_code_entry (eh
);
6509 code_sec
= fh
->elf
.root
.u
.def
.section
;
6510 code_sec
->flags
|= SEC_KEEP
;
6512 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6513 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6514 eh
->elf
.root
.u
.def
.value
,
6515 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6516 code_sec
->flags
|= SEC_KEEP
;
6522 /* Return the section that should be marked against GC for a given
6526 ppc64_elf_gc_mark_hook (asection
*sec
,
6527 struct bfd_link_info
*info
,
6528 Elf_Internal_Rela
*rel
,
6529 struct elf_link_hash_entry
*h
,
6530 Elf_Internal_Sym
*sym
)
6534 /* Syms return NULL if we're marking .opd, so we avoid marking all
6535 function sections, as all functions are referenced in .opd. */
6537 if (get_opd_info (sec
) != NULL
)
6542 enum elf_ppc64_reloc_type r_type
;
6543 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6545 r_type
= ELF64_R_TYPE (rel
->r_info
);
6548 case R_PPC64_GNU_VTINHERIT
:
6549 case R_PPC64_GNU_VTENTRY
:
6553 switch (h
->root
.type
)
6555 case bfd_link_hash_defined
:
6556 case bfd_link_hash_defweak
:
6557 eh
= (struct ppc_link_hash_entry
*) h
;
6558 fdh
= defined_func_desc (eh
);
6561 /* -mcall-aixdesc code references the dot-symbol on
6562 a call reloc. Mark the function descriptor too
6563 against garbage collection. */
6565 if (fdh
->elf
.u
.weakdef
!= NULL
)
6566 fdh
->elf
.u
.weakdef
->mark
= 1;
6570 /* Function descriptor syms cause the associated
6571 function code sym section to be marked. */
6572 fh
= defined_code_entry (eh
);
6575 /* They also mark their opd section. */
6576 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6578 rsec
= fh
->elf
.root
.u
.def
.section
;
6580 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6581 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6582 eh
->elf
.root
.u
.def
.value
,
6583 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6584 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6586 rsec
= h
->root
.u
.def
.section
;
6589 case bfd_link_hash_common
:
6590 rsec
= h
->root
.u
.c
.p
->section
;
6594 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6600 struct _opd_sec_data
*opd
;
6602 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6603 opd
= get_opd_info (rsec
);
6604 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6608 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6615 /* Update the .got, .plt. and dynamic reloc reference counts for the
6616 section being removed. */
6619 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6620 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6622 struct ppc_link_hash_table
*htab
;
6623 Elf_Internal_Shdr
*symtab_hdr
;
6624 struct elf_link_hash_entry
**sym_hashes
;
6625 struct got_entry
**local_got_ents
;
6626 const Elf_Internal_Rela
*rel
, *relend
;
6628 if (bfd_link_relocatable (info
))
6631 if ((sec
->flags
& SEC_ALLOC
) == 0)
6634 elf_section_data (sec
)->local_dynrel
= NULL
;
6636 htab
= ppc_hash_table (info
);
6640 symtab_hdr
= &elf_symtab_hdr (abfd
);
6641 sym_hashes
= elf_sym_hashes (abfd
);
6642 local_got_ents
= elf_local_got_ents (abfd
);
6644 relend
= relocs
+ sec
->reloc_count
;
6645 for (rel
= relocs
; rel
< relend
; rel
++)
6647 unsigned long r_symndx
;
6648 enum elf_ppc64_reloc_type r_type
;
6649 struct elf_link_hash_entry
*h
= NULL
;
6650 struct plt_entry
**plt_list
= NULL
;
6651 unsigned char tls_type
= 0;
6653 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6654 r_type
= ELF64_R_TYPE (rel
->r_info
);
6655 if (r_symndx
>= symtab_hdr
->sh_info
)
6657 struct ppc_link_hash_entry
*eh
;
6658 struct elf_dyn_relocs
**pp
;
6659 struct elf_dyn_relocs
*p
;
6661 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6662 h
= elf_follow_link (h
);
6663 eh
= (struct ppc_link_hash_entry
*) h
;
6665 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6668 /* Everything must go for SEC. */
6676 case R_PPC64_GOT_TLSLD16
:
6677 case R_PPC64_GOT_TLSLD16_LO
:
6678 case R_PPC64_GOT_TLSLD16_HI
:
6679 case R_PPC64_GOT_TLSLD16_HA
:
6680 tls_type
= TLS_TLS
| TLS_LD
;
6683 case R_PPC64_GOT_TLSGD16
:
6684 case R_PPC64_GOT_TLSGD16_LO
:
6685 case R_PPC64_GOT_TLSGD16_HI
:
6686 case R_PPC64_GOT_TLSGD16_HA
:
6687 tls_type
= TLS_TLS
| TLS_GD
;
6690 case R_PPC64_GOT_TPREL16_DS
:
6691 case R_PPC64_GOT_TPREL16_LO_DS
:
6692 case R_PPC64_GOT_TPREL16_HI
:
6693 case R_PPC64_GOT_TPREL16_HA
:
6694 tls_type
= TLS_TLS
| TLS_TPREL
;
6697 case R_PPC64_GOT_DTPREL16_DS
:
6698 case R_PPC64_GOT_DTPREL16_LO_DS
:
6699 case R_PPC64_GOT_DTPREL16_HI
:
6700 case R_PPC64_GOT_DTPREL16_HA
:
6701 tls_type
= TLS_TLS
| TLS_DTPREL
;
6705 case R_PPC64_GOT16_DS
:
6706 case R_PPC64_GOT16_HA
:
6707 case R_PPC64_GOT16_HI
:
6708 case R_PPC64_GOT16_LO
:
6709 case R_PPC64_GOT16_LO_DS
:
6712 struct got_entry
*ent
;
6717 ent
= local_got_ents
[r_symndx
];
6719 for (; ent
!= NULL
; ent
= ent
->next
)
6720 if (ent
->addend
== rel
->r_addend
6721 && ent
->owner
== abfd
6722 && ent
->tls_type
== tls_type
)
6726 if (ent
->got
.refcount
> 0)
6727 ent
->got
.refcount
-= 1;
6729 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
6730 plt_list
= &h
->plt
.plist
;
6733 case R_PPC64_PLT16_HA
:
6734 case R_PPC64_PLT16_HI
:
6735 case R_PPC64_PLT16_LO
:
6739 case R_PPC64_REL14_BRNTAKEN
:
6740 case R_PPC64_REL14_BRTAKEN
:
6743 plt_list
= &h
->plt
.plist
;
6744 else if (local_got_ents
!= NULL
)
6746 struct plt_entry
**local_plt
= (struct plt_entry
**)
6747 (local_got_ents
+ symtab_hdr
->sh_info
);
6748 unsigned char *local_got_tls_masks
= (unsigned char *)
6749 (local_plt
+ symtab_hdr
->sh_info
);
6750 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6751 plt_list
= local_plt
+ r_symndx
;
6755 case R_PPC64_ADDR64
:
6756 case R_PPC64_ADDR16
:
6757 case R_PPC64_ADDR16_DS
:
6758 case R_PPC64_ADDR16_HA
:
6759 case R_PPC64_ADDR16_HI
:
6760 case R_PPC64_ADDR16_HIGH
:
6761 case R_PPC64_ADDR16_HIGHA
:
6762 case R_PPC64_ADDR16_HIGHER
:
6763 case R_PPC64_ADDR16_HIGHERA
:
6764 case R_PPC64_ADDR16_HIGHEST
:
6765 case R_PPC64_ADDR16_HIGHESTA
:
6766 case R_PPC64_ADDR16_LO
:
6767 case R_PPC64_ADDR16_LO_DS
:
6768 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
6769 && rel
->r_addend
== 0)
6770 plt_list
= &h
->plt
.plist
;
6776 if (plt_list
!= NULL
)
6778 struct plt_entry
*ent
;
6780 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6781 if (ent
->addend
== rel
->r_addend
)
6783 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6784 ent
->plt
.refcount
-= 1;
6790 /* The maximum size of .sfpr. */
6791 #define SFPR_MAX (218*4)
6793 struct sfpr_def_parms
6795 const char name
[12];
6796 unsigned char lo
, hi
;
6797 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6798 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6801 /* Auto-generate _save*, _rest* functions in .sfpr.
6802 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6806 sfpr_define (struct bfd_link_info
*info
,
6807 const struct sfpr_def_parms
*parm
,
6810 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6812 size_t len
= strlen (parm
->name
);
6813 bfd_boolean writing
= FALSE
;
6819 memcpy (sym
, parm
->name
, len
);
6822 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6824 struct ppc_link_hash_entry
*h
;
6826 sym
[len
+ 0] = i
/ 10 + '0';
6827 sym
[len
+ 1] = i
% 10 + '0';
6828 h
= (struct ppc_link_hash_entry
*)
6829 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6830 if (stub_sec
!= NULL
)
6833 && h
->elf
.root
.type
== bfd_link_hash_defined
6834 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6836 struct elf_link_hash_entry
*s
;
6838 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6839 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6842 if (s
->root
.type
== bfd_link_hash_new
6843 || (s
->root
.type
= bfd_link_hash_defined
6844 && s
->root
.u
.def
.section
== stub_sec
))
6846 s
->root
.type
= bfd_link_hash_defined
;
6847 s
->root
.u
.def
.section
= stub_sec
;
6848 s
->root
.u
.def
.value
= (stub_sec
->size
6849 + h
->elf
.root
.u
.def
.value
);
6852 s
->ref_regular_nonweak
= 1;
6853 s
->forced_local
= 1;
6855 s
->root
.linker_def
= 1;
6863 if (!h
->elf
.def_regular
)
6865 h
->elf
.root
.type
= bfd_link_hash_defined
;
6866 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6867 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6868 h
->elf
.type
= STT_FUNC
;
6869 h
->elf
.def_regular
= 1;
6871 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6873 if (htab
->sfpr
->contents
== NULL
)
6875 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6876 if (htab
->sfpr
->contents
== NULL
)
6883 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6885 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6887 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6888 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6896 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6898 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6903 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6905 p
= savegpr0 (abfd
, p
, r
);
6906 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6908 bfd_put_32 (abfd
, BLR
, p
);
6913 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6915 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6920 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6922 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6924 p
= restgpr0 (abfd
, p
, r
);
6925 bfd_put_32 (abfd
, MTLR_R0
, p
);
6929 p
= restgpr0 (abfd
, p
, 30);
6930 p
= restgpr0 (abfd
, p
, 31);
6932 bfd_put_32 (abfd
, BLR
, p
);
6937 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6939 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6944 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6946 p
= savegpr1 (abfd
, p
, r
);
6947 bfd_put_32 (abfd
, BLR
, p
);
6952 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6954 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6959 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6961 p
= restgpr1 (abfd
, p
, r
);
6962 bfd_put_32 (abfd
, BLR
, p
);
6967 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6969 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6974 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6976 p
= savefpr (abfd
, p
, r
);
6977 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6979 bfd_put_32 (abfd
, BLR
, p
);
6984 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6986 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6991 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6993 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6995 p
= restfpr (abfd
, p
, r
);
6996 bfd_put_32 (abfd
, MTLR_R0
, p
);
7000 p
= restfpr (abfd
, p
, 30);
7001 p
= restfpr (abfd
, p
, 31);
7003 bfd_put_32 (abfd
, BLR
, p
);
7008 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7010 p
= savefpr (abfd
, p
, r
);
7011 bfd_put_32 (abfd
, BLR
, p
);
7016 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7018 p
= restfpr (abfd
, p
, r
);
7019 bfd_put_32 (abfd
, BLR
, p
);
7024 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
7026 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7028 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
7033 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7035 p
= savevr (abfd
, p
, r
);
7036 bfd_put_32 (abfd
, BLR
, p
);
7041 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
7043 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7045 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
7050 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7052 p
= restvr (abfd
, p
, r
);
7053 bfd_put_32 (abfd
, BLR
, p
);
7057 /* Called via elf_link_hash_traverse to transfer dynamic linking
7058 information on function code symbol entries to their corresponding
7059 function descriptor symbol entries. */
7062 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
7064 struct bfd_link_info
*info
;
7065 struct ppc_link_hash_table
*htab
;
7066 struct ppc_link_hash_entry
*fh
;
7067 struct ppc_link_hash_entry
*fdh
;
7068 bfd_boolean force_local
;
7070 fh
= (struct ppc_link_hash_entry
*) h
;
7071 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
7077 if (fh
->elf
.root
.root
.string
[0] != '.'
7078 || fh
->elf
.root
.root
.string
[1] == '\0')
7082 htab
= ppc_hash_table (info
);
7086 /* Find the corresponding function descriptor symbol. */
7087 fdh
= lookup_fdh (fh
, htab
);
7089 /* Resolve undefined references to dot-symbols as the value
7090 in the function descriptor, if we have one in a regular object.
7091 This is to satisfy cases like ".quad .foo". Calls to functions
7092 in dynamic objects are handled elsewhere. */
7093 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7094 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7095 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7096 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7097 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7098 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7099 fdh
->elf
.root
.u
.def
.value
,
7100 &fh
->elf
.root
.u
.def
.section
,
7101 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7103 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7104 fh
->elf
.forced_local
= 1;
7105 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7106 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7109 if (!fh
->elf
.dynamic
)
7111 struct plt_entry
*ent
;
7113 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7114 if (ent
->plt
.refcount
> 0)
7120 /* Create a descriptor as undefined if necessary. */
7122 && !bfd_link_executable (info
)
7123 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7124 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7126 fdh
= make_fdh (info
, fh
);
7131 /* We can't support overriding of symbols on a fake descriptor. */
7134 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7135 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7136 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7138 /* Transfer dynamic linking information to the function descriptor. */
7141 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7142 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7143 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7144 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7145 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7146 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7147 || fh
->elf
.type
== STT_FUNC
7148 || fh
->elf
.type
== STT_GNU_IFUNC
);
7149 move_plt_plist (fh
, fdh
);
7151 if (!fdh
->elf
.forced_local
7152 && fh
->elf
.dynindx
!= -1)
7153 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7157 /* Now that the info is on the function descriptor, clear the
7158 function code sym info. Any function code syms for which we
7159 don't have a definition in a regular file, we force local.
7160 This prevents a shared library from exporting syms that have
7161 been imported from another library. Function code syms that
7162 are really in the library we must leave global to prevent the
7163 linker dragging in a definition from a static library. */
7164 force_local
= (!fh
->elf
.def_regular
7166 || !fdh
->elf
.def_regular
7167 || fdh
->elf
.forced_local
);
7168 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7173 static const struct sfpr_def_parms save_res_funcs
[] =
7175 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7176 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7177 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7178 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7179 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7180 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7181 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7182 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7183 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7184 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7185 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7186 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7189 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7190 this hook to a) provide some gcc support functions, and b) transfer
7191 dynamic linking information gathered so far on function code symbol
7192 entries, to their corresponding function descriptor symbol entries. */
7195 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7196 struct bfd_link_info
*info
)
7198 struct ppc_link_hash_table
*htab
;
7200 htab
= ppc_hash_table (info
);
7204 /* Provide any missing _save* and _rest* functions. */
7205 if (htab
->sfpr
!= NULL
)
7209 htab
->sfpr
->size
= 0;
7210 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7211 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7213 if (htab
->sfpr
->size
== 0)
7214 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7217 if (bfd_link_relocatable (info
))
7220 if (htab
->elf
.hgot
!= NULL
)
7222 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7223 /* Make .TOC. defined so as to prevent it being made dynamic.
7224 The wrong value here is fixed later in ppc64_elf_set_toc. */
7225 if (!htab
->elf
.hgot
->def_regular
7226 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7228 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7229 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7230 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7231 htab
->elf
.hgot
->def_regular
= 1;
7232 htab
->elf
.hgot
->root
.linker_def
= 1;
7234 htab
->elf
.hgot
->type
= STT_OBJECT
;
7235 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7239 if (htab
->need_func_desc_adj
)
7241 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7242 htab
->need_func_desc_adj
= 0;
7248 /* Return true if we have dynamic relocs against H that apply to
7249 read-only sections. */
7252 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7254 struct ppc_link_hash_entry
*eh
;
7255 struct elf_dyn_relocs
*p
;
7257 eh
= (struct ppc_link_hash_entry
*) h
;
7258 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7260 asection
*s
= p
->sec
->output_section
;
7262 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7268 /* Return true if we have dynamic relocs against H or any of its weak
7269 aliases, that apply to read-only sections. */
7272 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7274 struct ppc_link_hash_entry
*eh
;
7276 eh
= (struct ppc_link_hash_entry
*) h
;
7279 if (readonly_dynrelocs (&eh
->elf
))
7282 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7287 /* Return whether EH has pc-relative dynamic relocs. */
7290 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7292 struct elf_dyn_relocs
*p
;
7294 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7295 if (p
->pc_count
!= 0)
7300 /* Return true if a global entry stub will be created for H. Valid
7301 for ELFv2 before plt entries have been allocated. */
7304 global_entry_stub (struct elf_link_hash_entry
*h
)
7306 struct plt_entry
*pent
;
7308 if (!h
->pointer_equality_needed
7312 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7313 if (pent
->plt
.refcount
> 0
7314 && pent
->addend
== 0)
7320 /* Adjust a symbol defined by a dynamic object and referenced by a
7321 regular object. The current definition is in some section of the
7322 dynamic object, but we're not including those sections. We have to
7323 change the definition to something the rest of the link can
7327 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7328 struct elf_link_hash_entry
*h
)
7330 struct ppc_link_hash_table
*htab
;
7333 htab
= ppc_hash_table (info
);
7337 /* Deal with function syms. */
7338 if (h
->type
== STT_FUNC
7339 || h
->type
== STT_GNU_IFUNC
7342 /* Clear procedure linkage table information for any symbol that
7343 won't need a .plt entry. */
7344 struct plt_entry
*ent
;
7345 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7346 if (ent
->plt
.refcount
> 0)
7349 || (h
->type
!= STT_GNU_IFUNC
7350 && (SYMBOL_CALLS_LOCAL (info
, h
)
7351 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
7352 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7354 h
->plt
.plist
= NULL
;
7356 h
->pointer_equality_needed
= 0;
7358 else if (abiversion (info
->output_bfd
) >= 2)
7360 /* Taking a function's address in a read/write section
7361 doesn't require us to define the function symbol in the
7362 executable on a global entry stub. A dynamic reloc can
7363 be used instead. The reason we prefer a few more dynamic
7364 relocs is that calling via a global entry stub costs a
7365 few more instructions, and pointer_equality_needed causes
7366 extra work in ld.so when resolving these symbols. */
7367 if (global_entry_stub (h
)
7368 && !alias_readonly_dynrelocs (h
))
7370 h
->pointer_equality_needed
= 0;
7371 /* After adjust_dynamic_symbol, non_got_ref set in
7372 the non-pic case means that dyn_relocs for this
7373 symbol should be discarded. */
7377 /* If making a plt entry, then we don't need copy relocs. */
7382 h
->plt
.plist
= NULL
;
7384 /* If this is a weak symbol, and there is a real definition, the
7385 processor independent code will have arranged for us to see the
7386 real definition first, and we can just use the same value. */
7387 if (h
->u
.weakdef
!= NULL
)
7389 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7390 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7391 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7392 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7393 if (ELIMINATE_COPY_RELOCS
)
7394 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7398 /* If we are creating a shared library, we must presume that the
7399 only references to the symbol are via the global offset table.
7400 For such cases we need not do anything here; the relocations will
7401 be handled correctly by relocate_section. */
7402 if (bfd_link_pic (info
))
7405 /* If there are no references to this symbol that do not use the
7406 GOT, we don't need to generate a copy reloc. */
7407 if (!h
->non_got_ref
)
7410 /* Don't generate a copy reloc for symbols defined in the executable. */
7411 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7413 /* If -z nocopyreloc was given, don't generate them either. */
7414 || info
->nocopyreloc
7416 /* If we didn't find any dynamic relocs in read-only sections, then
7417 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7418 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7420 /* Protected variables do not work with .dynbss. The copy in
7421 .dynbss won't be used by the shared library with the protected
7422 definition for the variable. Text relocations are preferable
7423 to an incorrect program. */
7424 || h
->protected_def
)
7430 if (h
->plt
.plist
!= NULL
)
7432 /* We should never get here, but unfortunately there are versions
7433 of gcc out there that improperly (for this ABI) put initialized
7434 function pointers, vtable refs and suchlike in read-only
7435 sections. Allow them to proceed, but warn that this might
7436 break at runtime. */
7437 info
->callbacks
->einfo
7438 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7439 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7440 h
->root
.root
.string
);
7443 /* This is a reference to a symbol defined by a dynamic object which
7444 is not a function. */
7446 /* We must allocate the symbol in our .dynbss section, which will
7447 become part of the .bss section of the executable. There will be
7448 an entry for this symbol in the .dynsym section. The dynamic
7449 object will contain position independent code, so all references
7450 from the dynamic object to this symbol will go through the global
7451 offset table. The dynamic linker will use the .dynsym entry to
7452 determine the address it must put in the global offset table, so
7453 both the dynamic object and the regular object will refer to the
7454 same memory location for the variable. */
7456 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7457 to copy the initial value out of the dynamic object and into the
7458 runtime process image. We need to remember the offset into the
7459 .rela.bss section we are going to use. */
7460 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7462 s
= htab
->elf
.sdynrelro
;
7463 srel
= htab
->elf
.sreldynrelro
;
7467 s
= htab
->elf
.sdynbss
;
7468 srel
= htab
->elf
.srelbss
;
7470 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7472 srel
->size
+= sizeof (Elf64_External_Rela
);
7476 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7479 /* If given a function descriptor symbol, hide both the function code
7480 sym and the descriptor. */
7482 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7483 struct elf_link_hash_entry
*h
,
7484 bfd_boolean force_local
)
7486 struct ppc_link_hash_entry
*eh
;
7487 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7489 eh
= (struct ppc_link_hash_entry
*) h
;
7490 if (eh
->is_func_descriptor
)
7492 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7497 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7500 /* We aren't supposed to use alloca in BFD because on
7501 systems which do not have alloca the version in libiberty
7502 calls xmalloc, which might cause the program to crash
7503 when it runs out of memory. This function doesn't have a
7504 return status, so there's no way to gracefully return an
7505 error. So cheat. We know that string[-1] can be safely
7506 accessed; It's either a string in an ELF string table,
7507 or allocated in an objalloc structure. */
7509 p
= eh
->elf
.root
.root
.string
- 1;
7512 fh
= (struct ppc_link_hash_entry
*)
7513 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7516 /* Unfortunately, if it so happens that the string we were
7517 looking for was allocated immediately before this string,
7518 then we overwrote the string terminator. That's the only
7519 reason the lookup should fail. */
7522 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7523 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7525 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7526 fh
= (struct ppc_link_hash_entry
*)
7527 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7536 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7541 get_sym_h (struct elf_link_hash_entry
**hp
,
7542 Elf_Internal_Sym
**symp
,
7544 unsigned char **tls_maskp
,
7545 Elf_Internal_Sym
**locsymsp
,
7546 unsigned long r_symndx
,
7549 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7551 if (r_symndx
>= symtab_hdr
->sh_info
)
7553 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7554 struct elf_link_hash_entry
*h
;
7556 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7557 h
= elf_follow_link (h
);
7565 if (symsecp
!= NULL
)
7567 asection
*symsec
= NULL
;
7568 if (h
->root
.type
== bfd_link_hash_defined
7569 || h
->root
.type
== bfd_link_hash_defweak
)
7570 symsec
= h
->root
.u
.def
.section
;
7574 if (tls_maskp
!= NULL
)
7576 struct ppc_link_hash_entry
*eh
;
7578 eh
= (struct ppc_link_hash_entry
*) h
;
7579 *tls_maskp
= &eh
->tls_mask
;
7584 Elf_Internal_Sym
*sym
;
7585 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7587 if (locsyms
== NULL
)
7589 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7590 if (locsyms
== NULL
)
7591 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7592 symtab_hdr
->sh_info
,
7593 0, NULL
, NULL
, NULL
);
7594 if (locsyms
== NULL
)
7596 *locsymsp
= locsyms
;
7598 sym
= locsyms
+ r_symndx
;
7606 if (symsecp
!= NULL
)
7607 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7609 if (tls_maskp
!= NULL
)
7611 struct got_entry
**lgot_ents
;
7612 unsigned char *tls_mask
;
7615 lgot_ents
= elf_local_got_ents (ibfd
);
7616 if (lgot_ents
!= NULL
)
7618 struct plt_entry
**local_plt
= (struct plt_entry
**)
7619 (lgot_ents
+ symtab_hdr
->sh_info
);
7620 unsigned char *lgot_masks
= (unsigned char *)
7621 (local_plt
+ symtab_hdr
->sh_info
);
7622 tls_mask
= &lgot_masks
[r_symndx
];
7624 *tls_maskp
= tls_mask
;
7630 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7631 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7632 type suitable for optimization, and 1 otherwise. */
7635 get_tls_mask (unsigned char **tls_maskp
,
7636 unsigned long *toc_symndx
,
7637 bfd_vma
*toc_addend
,
7638 Elf_Internal_Sym
**locsymsp
,
7639 const Elf_Internal_Rela
*rel
,
7642 unsigned long r_symndx
;
7644 struct elf_link_hash_entry
*h
;
7645 Elf_Internal_Sym
*sym
;
7649 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7650 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7653 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7655 || ppc64_elf_section_data (sec
) == NULL
7656 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7659 /* Look inside a TOC section too. */
7662 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7663 off
= h
->root
.u
.def
.value
;
7666 off
= sym
->st_value
;
7667 off
+= rel
->r_addend
;
7668 BFD_ASSERT (off
% 8 == 0);
7669 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7670 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7671 if (toc_symndx
!= NULL
)
7672 *toc_symndx
= r_symndx
;
7673 if (toc_addend
!= NULL
)
7674 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7675 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7677 if ((h
== NULL
|| is_static_defined (h
))
7678 && (next_r
== -1 || next_r
== -2))
7683 /* Find (or create) an entry in the tocsave hash table. */
7685 static struct tocsave_entry
*
7686 tocsave_find (struct ppc_link_hash_table
*htab
,
7687 enum insert_option insert
,
7688 Elf_Internal_Sym
**local_syms
,
7689 const Elf_Internal_Rela
*irela
,
7692 unsigned long r_indx
;
7693 struct elf_link_hash_entry
*h
;
7694 Elf_Internal_Sym
*sym
;
7695 struct tocsave_entry ent
, *p
;
7697 struct tocsave_entry
**slot
;
7699 r_indx
= ELF64_R_SYM (irela
->r_info
);
7700 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7702 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7705 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7710 ent
.offset
= h
->root
.u
.def
.value
;
7712 ent
.offset
= sym
->st_value
;
7713 ent
.offset
+= irela
->r_addend
;
7715 hash
= tocsave_htab_hash (&ent
);
7716 slot
= ((struct tocsave_entry
**)
7717 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7723 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7732 /* Adjust all global syms defined in opd sections. In gcc generated
7733 code for the old ABI, these will already have been done. */
7736 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7738 struct ppc_link_hash_entry
*eh
;
7740 struct _opd_sec_data
*opd
;
7742 if (h
->root
.type
== bfd_link_hash_indirect
)
7745 if (h
->root
.type
!= bfd_link_hash_defined
7746 && h
->root
.type
!= bfd_link_hash_defweak
)
7749 eh
= (struct ppc_link_hash_entry
*) h
;
7750 if (eh
->adjust_done
)
7753 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7754 opd
= get_opd_info (sym_sec
);
7755 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7757 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7760 /* This entry has been deleted. */
7761 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7764 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7765 if (discarded_section (dsec
))
7767 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7771 eh
->elf
.root
.u
.def
.value
= 0;
7772 eh
->elf
.root
.u
.def
.section
= dsec
;
7775 eh
->elf
.root
.u
.def
.value
+= adjust
;
7776 eh
->adjust_done
= 1;
7781 /* Handles decrementing dynamic reloc counts for the reloc specified by
7782 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7783 have already been determined. */
7786 dec_dynrel_count (bfd_vma r_info
,
7788 struct bfd_link_info
*info
,
7789 Elf_Internal_Sym
**local_syms
,
7790 struct elf_link_hash_entry
*h
,
7791 Elf_Internal_Sym
*sym
)
7793 enum elf_ppc64_reloc_type r_type
;
7794 asection
*sym_sec
= NULL
;
7796 /* Can this reloc be dynamic? This switch, and later tests here
7797 should be kept in sync with the code in check_relocs. */
7798 r_type
= ELF64_R_TYPE (r_info
);
7804 case R_PPC64_TPREL16
:
7805 case R_PPC64_TPREL16_LO
:
7806 case R_PPC64_TPREL16_HI
:
7807 case R_PPC64_TPREL16_HA
:
7808 case R_PPC64_TPREL16_DS
:
7809 case R_PPC64_TPREL16_LO_DS
:
7810 case R_PPC64_TPREL16_HIGH
:
7811 case R_PPC64_TPREL16_HIGHA
:
7812 case R_PPC64_TPREL16_HIGHER
:
7813 case R_PPC64_TPREL16_HIGHERA
:
7814 case R_PPC64_TPREL16_HIGHEST
:
7815 case R_PPC64_TPREL16_HIGHESTA
:
7816 case R_PPC64_TPREL64
:
7817 case R_PPC64_DTPMOD64
:
7818 case R_PPC64_DTPREL64
:
7819 case R_PPC64_ADDR64
:
7823 case R_PPC64_ADDR14
:
7824 case R_PPC64_ADDR14_BRNTAKEN
:
7825 case R_PPC64_ADDR14_BRTAKEN
:
7826 case R_PPC64_ADDR16
:
7827 case R_PPC64_ADDR16_DS
:
7828 case R_PPC64_ADDR16_HA
:
7829 case R_PPC64_ADDR16_HI
:
7830 case R_PPC64_ADDR16_HIGH
:
7831 case R_PPC64_ADDR16_HIGHA
:
7832 case R_PPC64_ADDR16_HIGHER
:
7833 case R_PPC64_ADDR16_HIGHERA
:
7834 case R_PPC64_ADDR16_HIGHEST
:
7835 case R_PPC64_ADDR16_HIGHESTA
:
7836 case R_PPC64_ADDR16_LO
:
7837 case R_PPC64_ADDR16_LO_DS
:
7838 case R_PPC64_ADDR24
:
7839 case R_PPC64_ADDR32
:
7840 case R_PPC64_UADDR16
:
7841 case R_PPC64_UADDR32
:
7842 case R_PPC64_UADDR64
:
7847 if (local_syms
!= NULL
)
7849 unsigned long r_symndx
;
7850 bfd
*ibfd
= sec
->owner
;
7852 r_symndx
= ELF64_R_SYM (r_info
);
7853 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7857 if ((bfd_link_pic (info
)
7858 && (must_be_dyn_reloc (info
, r_type
)
7860 && (!SYMBOLIC_BIND (info
, h
)
7861 || h
->root
.type
== bfd_link_hash_defweak
7862 || !h
->def_regular
))))
7863 || (ELIMINATE_COPY_RELOCS
7864 && !bfd_link_pic (info
)
7866 && (h
->root
.type
== bfd_link_hash_defweak
7867 || !h
->def_regular
)))
7874 struct elf_dyn_relocs
*p
;
7875 struct elf_dyn_relocs
**pp
;
7876 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7878 /* elf_gc_sweep may have already removed all dyn relocs associated
7879 with local syms for a given section. Also, symbol flags are
7880 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7881 report a dynreloc miscount. */
7882 if (*pp
== NULL
&& info
->gc_sections
)
7885 while ((p
= *pp
) != NULL
)
7889 if (!must_be_dyn_reloc (info
, r_type
))
7901 struct ppc_dyn_relocs
*p
;
7902 struct ppc_dyn_relocs
**pp
;
7904 bfd_boolean is_ifunc
;
7906 if (local_syms
== NULL
)
7907 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7908 if (sym_sec
== NULL
)
7911 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7912 pp
= (struct ppc_dyn_relocs
**) vpp
;
7914 if (*pp
== NULL
&& info
->gc_sections
)
7917 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7918 while ((p
= *pp
) != NULL
)
7920 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7931 /* xgettext:c-format */
7932 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7934 bfd_set_error (bfd_error_bad_value
);
7938 /* Remove unused Official Procedure Descriptor entries. Currently we
7939 only remove those associated with functions in discarded link-once
7940 sections, or weakly defined functions that have been overridden. It
7941 would be possible to remove many more entries for statically linked
7945 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7948 bfd_boolean some_edited
= FALSE
;
7949 asection
*need_pad
= NULL
;
7950 struct ppc_link_hash_table
*htab
;
7952 htab
= ppc_hash_table (info
);
7956 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7959 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7960 Elf_Internal_Shdr
*symtab_hdr
;
7961 Elf_Internal_Sym
*local_syms
;
7962 struct _opd_sec_data
*opd
;
7963 bfd_boolean need_edit
, add_aux_fields
, broken
;
7964 bfd_size_type cnt_16b
= 0;
7966 if (!is_ppc64_elf (ibfd
))
7969 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7970 if (sec
== NULL
|| sec
->size
== 0)
7973 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7976 if (sec
->output_section
== bfd_abs_section_ptr
)
7979 /* Look through the section relocs. */
7980 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7984 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7986 /* Read the relocations. */
7987 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7989 if (relstart
== NULL
)
7992 /* First run through the relocs to check they are sane, and to
7993 determine whether we need to edit this opd section. */
7997 relend
= relstart
+ sec
->reloc_count
;
7998 for (rel
= relstart
; rel
< relend
; )
8000 enum elf_ppc64_reloc_type r_type
;
8001 unsigned long r_symndx
;
8003 struct elf_link_hash_entry
*h
;
8004 Elf_Internal_Sym
*sym
;
8007 /* .opd contains an array of 16 or 24 byte entries. We're
8008 only interested in the reloc pointing to a function entry
8010 offset
= rel
->r_offset
;
8011 if (rel
+ 1 == relend
8012 || rel
[1].r_offset
!= offset
+ 8)
8014 /* If someone messes with .opd alignment then after a
8015 "ld -r" we might have padding in the middle of .opd.
8016 Also, there's nothing to prevent someone putting
8017 something silly in .opd with the assembler. No .opd
8018 optimization for them! */
8021 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
8026 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
8027 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
8030 /* xgettext:c-format */
8031 (_("%B: unexpected reloc type %u in .opd section"),
8037 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8038 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8042 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
8044 const char *sym_name
;
8046 sym_name
= h
->root
.root
.string
;
8048 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8052 /* xgettext:c-format */
8053 (_("%B: undefined sym `%s' in .opd section"),
8059 /* opd entries are always for functions defined in the
8060 current input bfd. If the symbol isn't defined in the
8061 input bfd, then we won't be using the function in this
8062 bfd; It must be defined in a linkonce section in another
8063 bfd, or is weak. It's also possible that we are
8064 discarding the function due to a linker script /DISCARD/,
8065 which we test for via the output_section. */
8066 if (sym_sec
->owner
!= ibfd
8067 || sym_sec
->output_section
== bfd_abs_section_ptr
)
8071 if (rel
+ 1 == relend
8072 || (rel
+ 2 < relend
8073 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
8078 if (sec
->size
== offset
+ 24)
8083 if (sec
->size
== offset
+ 16)
8090 else if (rel
+ 1 < relend
8091 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8092 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8094 if (rel
[0].r_offset
== offset
+ 16)
8096 else if (rel
[0].r_offset
!= offset
+ 24)
8103 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8105 if (!broken
&& (need_edit
|| add_aux_fields
))
8107 Elf_Internal_Rela
*write_rel
;
8108 Elf_Internal_Shdr
*rel_hdr
;
8109 bfd_byte
*rptr
, *wptr
;
8110 bfd_byte
*new_contents
;
8113 new_contents
= NULL
;
8114 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8115 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8116 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8117 if (opd
->adjust
== NULL
)
8119 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8121 /* This seems a waste of time as input .opd sections are all
8122 zeros as generated by gcc, but I suppose there's no reason
8123 this will always be so. We might start putting something in
8124 the third word of .opd entries. */
8125 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8128 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8133 if (local_syms
!= NULL
8134 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8136 if (elf_section_data (sec
)->relocs
!= relstart
)
8140 sec
->contents
= loc
;
8141 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8144 elf_section_data (sec
)->relocs
= relstart
;
8146 new_contents
= sec
->contents
;
8149 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8150 if (new_contents
== NULL
)
8154 wptr
= new_contents
;
8155 rptr
= sec
->contents
;
8156 write_rel
= relstart
;
8157 for (rel
= relstart
; rel
< relend
; )
8159 unsigned long r_symndx
;
8161 struct elf_link_hash_entry
*h
;
8162 struct ppc_link_hash_entry
*fdh
= NULL
;
8163 Elf_Internal_Sym
*sym
;
8165 Elf_Internal_Rela
*next_rel
;
8168 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8169 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8174 if (next_rel
+ 1 == relend
8175 || (next_rel
+ 2 < relend
8176 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8179 /* See if the .opd entry is full 24 byte or
8180 16 byte (with fd_aux entry overlapped with next
8183 if (next_rel
== relend
)
8185 if (sec
->size
== rel
->r_offset
+ 16)
8188 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8192 && h
->root
.root
.string
[0] == '.')
8194 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8197 fdh
= ppc_follow_link (fdh
);
8198 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8199 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8204 skip
= (sym_sec
->owner
!= ibfd
8205 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8208 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8210 /* Arrange for the function descriptor sym
8212 fdh
->elf
.root
.u
.def
.value
= 0;
8213 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8215 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8217 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8222 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8226 if (++rel
== next_rel
)
8229 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8230 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8237 /* We'll be keeping this opd entry. */
8242 /* Redefine the function descriptor symbol to
8243 this location in the opd section. It is
8244 necessary to update the value here rather
8245 than using an array of adjustments as we do
8246 for local symbols, because various places
8247 in the generic ELF code use the value
8248 stored in u.def.value. */
8249 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8250 fdh
->adjust_done
= 1;
8253 /* Local syms are a bit tricky. We could
8254 tweak them as they can be cached, but
8255 we'd need to look through the local syms
8256 for the function descriptor sym which we
8257 don't have at the moment. So keep an
8258 array of adjustments. */
8259 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8260 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8263 memcpy (wptr
, rptr
, opd_ent_size
);
8264 wptr
+= opd_ent_size
;
8265 if (add_aux_fields
&& opd_ent_size
== 16)
8267 memset (wptr
, '\0', 8);
8271 /* We need to adjust any reloc offsets to point to the
8273 for ( ; rel
!= next_rel
; ++rel
)
8275 rel
->r_offset
+= adjust
;
8276 if (write_rel
!= rel
)
8277 memcpy (write_rel
, rel
, sizeof (*rel
));
8282 rptr
+= opd_ent_size
;
8285 sec
->size
= wptr
- new_contents
;
8286 sec
->reloc_count
= write_rel
- relstart
;
8289 free (sec
->contents
);
8290 sec
->contents
= new_contents
;
8293 /* Fudge the header size too, as this is used later in
8294 elf_bfd_final_link if we are emitting relocs. */
8295 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8296 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8299 else if (elf_section_data (sec
)->relocs
!= relstart
)
8302 if (local_syms
!= NULL
8303 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8305 if (!info
->keep_memory
)
8308 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8313 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8315 /* If we are doing a final link and the last .opd entry is just 16 byte
8316 long, add a 8 byte padding after it. */
8317 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8321 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8323 BFD_ASSERT (need_pad
->size
> 0);
8325 p
= bfd_malloc (need_pad
->size
+ 8);
8329 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8330 p
, 0, need_pad
->size
))
8333 need_pad
->contents
= p
;
8334 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8338 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8342 need_pad
->contents
= p
;
8345 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8346 need_pad
->size
+= 8;
8352 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8355 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8357 struct ppc_link_hash_table
*htab
;
8359 htab
= ppc_hash_table (info
);
8363 if (abiversion (info
->output_bfd
) == 1)
8366 if (htab
->params
->no_multi_toc
)
8367 htab
->do_multi_toc
= 0;
8368 else if (!htab
->do_multi_toc
)
8369 htab
->params
->no_multi_toc
= 1;
8371 /* Default to --no-plt-localentry, as this option can cause problems
8372 with symbol interposition. For example, glibc libpthread.so and
8373 libc.so duplicate many pthread symbols, with a fallback
8374 implementation in libc.so. In some cases the fallback does more
8375 work than the pthread implementation. __pthread_condattr_destroy
8376 is one such symbol: the libpthread.so implementation is
8377 localentry:0 while the libc.so implementation is localentry:8.
8378 An app that "cleverly" uses dlopen to only load necessary
8379 libraries at runtime may omit loading libpthread.so when not
8380 running multi-threaded, which then results in the libc.so
8381 fallback symbols being used and ld.so complaining. Now there
8382 are workarounds in ld (see non_zero_localentry) to detect the
8383 pthread situation, but that may not be the only case where
8384 --plt-localentry can cause trouble. */
8385 if (htab
->params
->plt_localentry0
< 0)
8386 htab
->params
->plt_localentry0
= 0;
8387 if (htab
->params
->plt_localentry0
8388 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8389 FALSE
, FALSE
, FALSE
) == NULL
)
8390 info
->callbacks
->einfo
8391 (_("%P: warning: --plt-localentry is especially dangerous without "
8392 "ld.so support to detect ABI violations.\n"));
8394 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8395 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8396 FALSE
, FALSE
, TRUE
));
8397 /* Move dynamic linking info to the function descriptor sym. */
8398 if (htab
->tls_get_addr
!= NULL
)
8399 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8400 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8401 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8402 FALSE
, FALSE
, TRUE
));
8403 if (htab
->params
->tls_get_addr_opt
)
8405 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8407 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8408 FALSE
, FALSE
, TRUE
);
8410 func_desc_adjust (opt
, info
);
8411 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8412 FALSE
, FALSE
, TRUE
);
8414 && (opt_fd
->root
.type
== bfd_link_hash_defined
8415 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8417 /* If glibc supports an optimized __tls_get_addr call stub,
8418 signalled by the presence of __tls_get_addr_opt, and we'll
8419 be calling __tls_get_addr via a plt call stub, then
8420 make __tls_get_addr point to __tls_get_addr_opt. */
8421 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8422 if (htab
->elf
.dynamic_sections_created
8424 && (tga_fd
->type
== STT_FUNC
8425 || tga_fd
->needs_plt
)
8426 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8427 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8429 struct plt_entry
*ent
;
8431 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8432 if (ent
->plt
.refcount
> 0)
8436 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8437 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8438 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8440 if (opt_fd
->dynindx
!= -1)
8442 /* Use __tls_get_addr_opt in dynamic relocations. */
8443 opt_fd
->dynindx
= -1;
8444 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8445 opt_fd
->dynstr_index
);
8446 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8449 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8450 tga
= &htab
->tls_get_addr
->elf
;
8451 if (opt
!= NULL
&& tga
!= NULL
)
8453 tga
->root
.type
= bfd_link_hash_indirect
;
8454 tga
->root
.u
.i
.link
= &opt
->root
;
8455 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8457 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8459 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8461 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8462 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8463 if (htab
->tls_get_addr
!= NULL
)
8465 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8466 htab
->tls_get_addr
->is_func
= 1;
8471 else if (htab
->params
->tls_get_addr_opt
< 0)
8472 htab
->params
->tls_get_addr_opt
= 0;
8474 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8477 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8481 branch_reloc_hash_match (const bfd
*ibfd
,
8482 const Elf_Internal_Rela
*rel
,
8483 const struct ppc_link_hash_entry
*hash1
,
8484 const struct ppc_link_hash_entry
*hash2
)
8486 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8487 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8488 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8490 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8492 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8493 struct elf_link_hash_entry
*h
;
8495 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8496 h
= elf_follow_link (h
);
8497 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8503 /* Run through all the TLS relocs looking for optimization
8504 opportunities. The linker has been hacked (see ppc64elf.em) to do
8505 a preliminary section layout so that we know the TLS segment
8506 offsets. We can't optimize earlier because some optimizations need
8507 to know the tp offset, and we need to optimize before allocating
8508 dynamic relocations. */
8511 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8515 struct ppc_link_hash_table
*htab
;
8516 unsigned char *toc_ref
;
8519 if (!bfd_link_executable (info
))
8522 htab
= ppc_hash_table (info
);
8526 /* Make two passes over the relocs. On the first pass, mark toc
8527 entries involved with tls relocs, and check that tls relocs
8528 involved in setting up a tls_get_addr call are indeed followed by
8529 such a call. If they are not, we can't do any tls optimization.
8530 On the second pass twiddle tls_mask flags to notify
8531 relocate_section that optimization can be done, and adjust got
8532 and plt refcounts. */
8534 for (pass
= 0; pass
< 2; ++pass
)
8535 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8537 Elf_Internal_Sym
*locsyms
= NULL
;
8538 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8540 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8541 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8543 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8544 bfd_boolean found_tls_get_addr_arg
= 0;
8546 /* Read the relocations. */
8547 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8549 if (relstart
== NULL
)
8555 relend
= relstart
+ sec
->reloc_count
;
8556 for (rel
= relstart
; rel
< relend
; rel
++)
8558 enum elf_ppc64_reloc_type r_type
;
8559 unsigned long r_symndx
;
8560 struct elf_link_hash_entry
*h
;
8561 Elf_Internal_Sym
*sym
;
8563 unsigned char *tls_mask
;
8564 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8566 bfd_boolean ok_tprel
, is_local
;
8567 long toc_ref_index
= 0;
8568 int expecting_tls_get_addr
= 0;
8569 bfd_boolean ret
= FALSE
;
8571 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8572 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8576 if (elf_section_data (sec
)->relocs
!= relstart
)
8578 if (toc_ref
!= NULL
)
8581 && (elf_symtab_hdr (ibfd
).contents
8582 != (unsigned char *) locsyms
))
8589 if (h
->root
.type
== bfd_link_hash_defined
8590 || h
->root
.type
== bfd_link_hash_defweak
)
8591 value
= h
->root
.u
.def
.value
;
8592 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8596 found_tls_get_addr_arg
= 0;
8601 /* Symbols referenced by TLS relocs must be of type
8602 STT_TLS. So no need for .opd local sym adjust. */
8603 value
= sym
->st_value
;
8612 && h
->root
.type
== bfd_link_hash_undefweak
)
8614 else if (sym_sec
!= NULL
8615 && sym_sec
->output_section
!= NULL
)
8617 value
+= sym_sec
->output_offset
;
8618 value
+= sym_sec
->output_section
->vma
;
8619 value
-= htab
->elf
.tls_sec
->vma
;
8620 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8621 < (bfd_vma
) 1 << 32);
8625 r_type
= ELF64_R_TYPE (rel
->r_info
);
8626 /* If this section has old-style __tls_get_addr calls
8627 without marker relocs, then check that each
8628 __tls_get_addr call reloc is preceded by a reloc
8629 that conceivably belongs to the __tls_get_addr arg
8630 setup insn. If we don't find matching arg setup
8631 relocs, don't do any tls optimization. */
8633 && sec
->has_tls_get_addr_call
8635 && (h
== &htab
->tls_get_addr
->elf
8636 || h
== &htab
->tls_get_addr_fd
->elf
)
8637 && !found_tls_get_addr_arg
8638 && is_branch_reloc (r_type
))
8640 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8641 "TLS optimization disabled\n"),
8642 ibfd
, sec
, rel
->r_offset
);
8647 found_tls_get_addr_arg
= 0;
8650 case R_PPC64_GOT_TLSLD16
:
8651 case R_PPC64_GOT_TLSLD16_LO
:
8652 expecting_tls_get_addr
= 1;
8653 found_tls_get_addr_arg
= 1;
8656 case R_PPC64_GOT_TLSLD16_HI
:
8657 case R_PPC64_GOT_TLSLD16_HA
:
8658 /* These relocs should never be against a symbol
8659 defined in a shared lib. Leave them alone if
8660 that turns out to be the case. */
8667 tls_type
= TLS_TLS
| TLS_LD
;
8670 case R_PPC64_GOT_TLSGD16
:
8671 case R_PPC64_GOT_TLSGD16_LO
:
8672 expecting_tls_get_addr
= 1;
8673 found_tls_get_addr_arg
= 1;
8676 case R_PPC64_GOT_TLSGD16_HI
:
8677 case R_PPC64_GOT_TLSGD16_HA
:
8683 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8685 tls_type
= TLS_TLS
| TLS_GD
;
8688 case R_PPC64_GOT_TPREL16_DS
:
8689 case R_PPC64_GOT_TPREL16_LO_DS
:
8690 case R_PPC64_GOT_TPREL16_HI
:
8691 case R_PPC64_GOT_TPREL16_HA
:
8696 tls_clear
= TLS_TPREL
;
8697 tls_type
= TLS_TLS
| TLS_TPREL
;
8704 found_tls_get_addr_arg
= 1;
8709 case R_PPC64_TOC16_LO
:
8710 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8713 /* Mark this toc entry as referenced by a TLS
8714 code sequence. We can do that now in the
8715 case of R_PPC64_TLS, and after checking for
8716 tls_get_addr for the TOC16 relocs. */
8717 if (toc_ref
== NULL
)
8718 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8719 if (toc_ref
== NULL
)
8723 value
= h
->root
.u
.def
.value
;
8725 value
= sym
->st_value
;
8726 value
+= rel
->r_addend
;
8729 BFD_ASSERT (value
< toc
->size
8730 && toc
->output_offset
% 8 == 0);
8731 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8732 if (r_type
== R_PPC64_TLS
8733 || r_type
== R_PPC64_TLSGD
8734 || r_type
== R_PPC64_TLSLD
)
8736 toc_ref
[toc_ref_index
] = 1;
8740 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8745 expecting_tls_get_addr
= 2;
8748 case R_PPC64_TPREL64
:
8752 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8757 tls_set
= TLS_EXPLICIT
;
8758 tls_clear
= TLS_TPREL
;
8763 case R_PPC64_DTPMOD64
:
8767 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8769 if (rel
+ 1 < relend
8771 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8772 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8776 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8779 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8788 tls_set
= TLS_EXPLICIT
;
8799 if (!expecting_tls_get_addr
8800 || !sec
->has_tls_get_addr_call
)
8803 if (rel
+ 1 < relend
8804 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8806 htab
->tls_get_addr_fd
))
8808 if (expecting_tls_get_addr
== 2)
8810 /* Check for toc tls entries. */
8811 unsigned char *toc_tls
;
8814 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8819 if (toc_tls
!= NULL
)
8821 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8822 found_tls_get_addr_arg
= 1;
8824 toc_ref
[toc_ref_index
] = 1;
8830 if (expecting_tls_get_addr
!= 1)
8833 /* Uh oh, we didn't find the expected call. We
8834 could just mark this symbol to exclude it
8835 from tls optimization but it's safer to skip
8836 the entire optimization. */
8837 /* xgettext:c-format */
8838 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8839 "TLS optimization disabled\n"),
8840 ibfd
, sec
, rel
->r_offset
);
8845 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8847 struct plt_entry
*ent
;
8848 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8851 if (ent
->addend
== 0)
8853 if (ent
->plt
.refcount
> 0)
8855 ent
->plt
.refcount
-= 1;
8856 expecting_tls_get_addr
= 0;
8862 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8864 struct plt_entry
*ent
;
8865 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8868 if (ent
->addend
== 0)
8870 if (ent
->plt
.refcount
> 0)
8871 ent
->plt
.refcount
-= 1;
8879 if ((tls_set
& TLS_EXPLICIT
) == 0)
8881 struct got_entry
*ent
;
8883 /* Adjust got entry for this reloc. */
8887 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8889 for (; ent
!= NULL
; ent
= ent
->next
)
8890 if (ent
->addend
== rel
->r_addend
8891 && ent
->owner
== ibfd
8892 && ent
->tls_type
== tls_type
)
8899 /* We managed to get rid of a got entry. */
8900 if (ent
->got
.refcount
> 0)
8901 ent
->got
.refcount
-= 1;
8906 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8907 we'll lose one or two dyn relocs. */
8908 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8912 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8914 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8920 *tls_mask
|= tls_set
;
8921 *tls_mask
&= ~tls_clear
;
8924 if (elf_section_data (sec
)->relocs
!= relstart
)
8929 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8931 if (!info
->keep_memory
)
8934 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8938 if (toc_ref
!= NULL
)
8940 htab
->do_tls_opt
= 1;
8944 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8945 the values of any global symbols in a toc section that has been
8946 edited. Globals in toc sections should be a rarity, so this function
8947 sets a flag if any are found in toc sections other than the one just
8948 edited, so that further hash table traversals can be avoided. */
8950 struct adjust_toc_info
8953 unsigned long *skip
;
8954 bfd_boolean global_toc_syms
;
8957 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8960 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8962 struct ppc_link_hash_entry
*eh
;
8963 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8966 if (h
->root
.type
!= bfd_link_hash_defined
8967 && h
->root
.type
!= bfd_link_hash_defweak
)
8970 eh
= (struct ppc_link_hash_entry
*) h
;
8971 if (eh
->adjust_done
)
8974 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8976 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8977 i
= toc_inf
->toc
->rawsize
>> 3;
8979 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8981 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8984 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8987 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8988 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8991 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8992 eh
->adjust_done
= 1;
8994 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8995 toc_inf
->global_toc_syms
= TRUE
;
9000 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
9001 on a _LO variety toc/got reloc. */
9004 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
9006 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
9007 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
9008 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
9009 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
9010 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
9011 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
9012 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
9013 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
9014 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
9015 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
9016 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
9017 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
9018 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
9019 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
9020 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
9021 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
9022 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9023 /* Exclude lfqu by testing reloc. If relocs are ever
9024 defined for the reduced D field in psq_lu then those
9025 will need testing too. */
9026 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9027 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
9029 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
9030 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9031 /* Exclude stfqu. psq_stu as above for psq_lu. */
9032 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9033 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
9034 && (insn
& 1) == 0));
9037 /* Examine all relocs referencing .toc sections in order to remove
9038 unused .toc entries. */
9041 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
9044 struct adjust_toc_info toc_inf
;
9045 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9047 htab
->do_toc_opt
= 1;
9048 toc_inf
.global_toc_syms
= TRUE
;
9049 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9051 asection
*toc
, *sec
;
9052 Elf_Internal_Shdr
*symtab_hdr
;
9053 Elf_Internal_Sym
*local_syms
;
9054 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
9055 unsigned long *skip
, *drop
;
9056 unsigned char *used
;
9057 unsigned char *keep
, last
, some_unused
;
9059 if (!is_ppc64_elf (ibfd
))
9062 toc
= bfd_get_section_by_name (ibfd
, ".toc");
9065 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
9066 || discarded_section (toc
))
9071 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9073 /* Look at sections dropped from the final link. */
9076 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9078 if (sec
->reloc_count
== 0
9079 || !discarded_section (sec
)
9080 || get_opd_info (sec
)
9081 || (sec
->flags
& SEC_ALLOC
) == 0
9082 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9085 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
9086 if (relstart
== NULL
)
9089 /* Run through the relocs to see which toc entries might be
9091 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9093 enum elf_ppc64_reloc_type r_type
;
9094 unsigned long r_symndx
;
9096 struct elf_link_hash_entry
*h
;
9097 Elf_Internal_Sym
*sym
;
9100 r_type
= ELF64_R_TYPE (rel
->r_info
);
9107 case R_PPC64_TOC16_LO
:
9108 case R_PPC64_TOC16_HI
:
9109 case R_PPC64_TOC16_HA
:
9110 case R_PPC64_TOC16_DS
:
9111 case R_PPC64_TOC16_LO_DS
:
9115 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9116 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9124 val
= h
->root
.u
.def
.value
;
9126 val
= sym
->st_value
;
9127 val
+= rel
->r_addend
;
9129 if (val
>= toc
->size
)
9132 /* Anything in the toc ought to be aligned to 8 bytes.
9133 If not, don't mark as unused. */
9139 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9144 skip
[val
>> 3] = ref_from_discarded
;
9147 if (elf_section_data (sec
)->relocs
!= relstart
)
9151 /* For largetoc loads of address constants, we can convert
9152 . addis rx,2,addr@got@ha
9153 . ld ry,addr@got@l(rx)
9155 . addis rx,2,addr@toc@ha
9156 . addi ry,rx,addr@toc@l
9157 when addr is within 2G of the toc pointer. This then means
9158 that the word storing "addr" in the toc is no longer needed. */
9160 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9161 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9162 && toc
->reloc_count
!= 0)
9164 /* Read toc relocs. */
9165 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9167 if (toc_relocs
== NULL
)
9170 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9172 enum elf_ppc64_reloc_type r_type
;
9173 unsigned long r_symndx
;
9175 struct elf_link_hash_entry
*h
;
9176 Elf_Internal_Sym
*sym
;
9179 r_type
= ELF64_R_TYPE (rel
->r_info
);
9180 if (r_type
!= R_PPC64_ADDR64
)
9183 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9184 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9189 || sym_sec
->output_section
== NULL
9190 || discarded_section (sym_sec
))
9193 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9198 if (h
->type
== STT_GNU_IFUNC
)
9200 val
= h
->root
.u
.def
.value
;
9204 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9206 val
= sym
->st_value
;
9208 val
+= rel
->r_addend
;
9209 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9211 /* We don't yet know the exact toc pointer value, but we
9212 know it will be somewhere in the toc section. Don't
9213 optimize if the difference from any possible toc
9214 pointer is outside [ff..f80008000, 7fff7fff]. */
9215 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9216 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9219 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9220 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9225 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9230 skip
[rel
->r_offset
>> 3]
9231 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9238 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9242 if (local_syms
!= NULL
9243 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9247 && elf_section_data (sec
)->relocs
!= relstart
)
9249 if (toc_relocs
!= NULL
9250 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9257 /* Now check all kept sections that might reference the toc.
9258 Check the toc itself last. */
9259 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9262 sec
= (sec
== toc
? NULL
9263 : sec
->next
== NULL
? toc
9264 : sec
->next
== toc
&& toc
->next
? toc
->next
9269 if (sec
->reloc_count
== 0
9270 || discarded_section (sec
)
9271 || get_opd_info (sec
)
9272 || (sec
->flags
& SEC_ALLOC
) == 0
9273 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9276 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9278 if (relstart
== NULL
)
9284 /* Mark toc entries referenced as used. */
9288 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9290 enum elf_ppc64_reloc_type r_type
;
9291 unsigned long r_symndx
;
9293 struct elf_link_hash_entry
*h
;
9294 Elf_Internal_Sym
*sym
;
9296 enum {no_check
, check_lo
, check_ha
} insn_check
;
9298 r_type
= ELF64_R_TYPE (rel
->r_info
);
9302 insn_check
= no_check
;
9305 case R_PPC64_GOT_TLSLD16_HA
:
9306 case R_PPC64_GOT_TLSGD16_HA
:
9307 case R_PPC64_GOT_TPREL16_HA
:
9308 case R_PPC64_GOT_DTPREL16_HA
:
9309 case R_PPC64_GOT16_HA
:
9310 case R_PPC64_TOC16_HA
:
9311 insn_check
= check_ha
;
9314 case R_PPC64_GOT_TLSLD16_LO
:
9315 case R_PPC64_GOT_TLSGD16_LO
:
9316 case R_PPC64_GOT_TPREL16_LO_DS
:
9317 case R_PPC64_GOT_DTPREL16_LO_DS
:
9318 case R_PPC64_GOT16_LO
:
9319 case R_PPC64_GOT16_LO_DS
:
9320 case R_PPC64_TOC16_LO
:
9321 case R_PPC64_TOC16_LO_DS
:
9322 insn_check
= check_lo
;
9326 if (insn_check
!= no_check
)
9328 bfd_vma off
= rel
->r_offset
& ~3;
9329 unsigned char buf
[4];
9332 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9337 insn
= bfd_get_32 (ibfd
, buf
);
9338 if (insn_check
== check_lo
9339 ? !ok_lo_toc_insn (insn
, r_type
)
9340 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9341 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9345 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9346 sprintf (str
, "%#08x", insn
);
9347 info
->callbacks
->einfo
9348 /* xgettext:c-format */
9349 (_("%H: toc optimization is not supported for"
9350 " %s instruction.\n"),
9351 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9358 case R_PPC64_TOC16_LO
:
9359 case R_PPC64_TOC16_HI
:
9360 case R_PPC64_TOC16_HA
:
9361 case R_PPC64_TOC16_DS
:
9362 case R_PPC64_TOC16_LO_DS
:
9363 /* In case we're taking addresses of toc entries. */
9364 case R_PPC64_ADDR64
:
9371 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9372 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9383 val
= h
->root
.u
.def
.value
;
9385 val
= sym
->st_value
;
9386 val
+= rel
->r_addend
;
9388 if (val
>= toc
->size
)
9391 if ((skip
[val
>> 3] & can_optimize
) != 0)
9398 case R_PPC64_TOC16_HA
:
9401 case R_PPC64_TOC16_LO_DS
:
9402 off
= rel
->r_offset
;
9403 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9404 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9410 if ((opc
& (0x3f << 2)) == (58u << 2))
9415 /* Wrong sort of reloc, or not a ld. We may
9416 as well clear ref_from_discarded too. */
9423 /* For the toc section, we only mark as used if this
9424 entry itself isn't unused. */
9425 else if ((used
[rel
->r_offset
>> 3]
9426 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9429 /* Do all the relocs again, to catch reference
9438 if (elf_section_data (sec
)->relocs
!= relstart
)
9442 /* Merge the used and skip arrays. Assume that TOC
9443 doublewords not appearing as either used or unused belong
9444 to an entry more than one doubleword in size. */
9445 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9446 drop
< skip
+ (toc
->size
+ 7) / 8;
9451 *drop
&= ~ref_from_discarded
;
9452 if ((*drop
& can_optimize
) != 0)
9456 else if ((*drop
& ref_from_discarded
) != 0)
9459 last
= ref_from_discarded
;
9469 bfd_byte
*contents
, *src
;
9471 Elf_Internal_Sym
*sym
;
9472 bfd_boolean local_toc_syms
= FALSE
;
9474 /* Shuffle the toc contents, and at the same time convert the
9475 skip array from booleans into offsets. */
9476 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9479 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9481 for (src
= contents
, off
= 0, drop
= skip
;
9482 src
< contents
+ toc
->size
;
9485 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9490 memcpy (src
- off
, src
, 8);
9494 toc
->rawsize
= toc
->size
;
9495 toc
->size
= src
- contents
- off
;
9497 /* Adjust addends for relocs against the toc section sym,
9498 and optimize any accesses we can. */
9499 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9501 if (sec
->reloc_count
== 0
9502 || discarded_section (sec
))
9505 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9507 if (relstart
== NULL
)
9510 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9512 enum elf_ppc64_reloc_type r_type
;
9513 unsigned long r_symndx
;
9515 struct elf_link_hash_entry
*h
;
9518 r_type
= ELF64_R_TYPE (rel
->r_info
);
9525 case R_PPC64_TOC16_LO
:
9526 case R_PPC64_TOC16_HI
:
9527 case R_PPC64_TOC16_HA
:
9528 case R_PPC64_TOC16_DS
:
9529 case R_PPC64_TOC16_LO_DS
:
9530 case R_PPC64_ADDR64
:
9534 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9535 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9543 val
= h
->root
.u
.def
.value
;
9546 val
= sym
->st_value
;
9548 local_toc_syms
= TRUE
;
9551 val
+= rel
->r_addend
;
9553 if (val
> toc
->rawsize
)
9555 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9557 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9559 Elf_Internal_Rela
*tocrel
9560 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9561 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9565 case R_PPC64_TOC16_HA
:
9566 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9569 case R_PPC64_TOC16_LO_DS
:
9570 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9574 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9576 info
->callbacks
->einfo
9577 /* xgettext:c-format */
9578 (_("%H: %s references "
9579 "optimized away TOC entry\n"),
9580 ibfd
, sec
, rel
->r_offset
,
9581 ppc64_elf_howto_table
[r_type
]->name
);
9582 bfd_set_error (bfd_error_bad_value
);
9585 rel
->r_addend
= tocrel
->r_addend
;
9586 elf_section_data (sec
)->relocs
= relstart
;
9590 if (h
!= NULL
|| sym
->st_value
!= 0)
9593 rel
->r_addend
-= skip
[val
>> 3];
9594 elf_section_data (sec
)->relocs
= relstart
;
9597 if (elf_section_data (sec
)->relocs
!= relstart
)
9601 /* We shouldn't have local or global symbols defined in the TOC,
9602 but handle them anyway. */
9603 if (local_syms
!= NULL
)
9604 for (sym
= local_syms
;
9605 sym
< local_syms
+ symtab_hdr
->sh_info
;
9607 if (sym
->st_value
!= 0
9608 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9612 if (sym
->st_value
> toc
->rawsize
)
9613 i
= toc
->rawsize
>> 3;
9615 i
= sym
->st_value
>> 3;
9617 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9621 (_("%s defined on removed toc entry"),
9622 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9625 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9626 sym
->st_value
= (bfd_vma
) i
<< 3;
9629 sym
->st_value
-= skip
[i
];
9630 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9633 /* Adjust any global syms defined in this toc input section. */
9634 if (toc_inf
.global_toc_syms
)
9637 toc_inf
.skip
= skip
;
9638 toc_inf
.global_toc_syms
= FALSE
;
9639 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9643 if (toc
->reloc_count
!= 0)
9645 Elf_Internal_Shdr
*rel_hdr
;
9646 Elf_Internal_Rela
*wrel
;
9649 /* Remove unused toc relocs, and adjust those we keep. */
9650 if (toc_relocs
== NULL
)
9651 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9653 if (toc_relocs
== NULL
)
9657 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9658 if ((skip
[rel
->r_offset
>> 3]
9659 & (ref_from_discarded
| can_optimize
)) == 0)
9661 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9662 wrel
->r_info
= rel
->r_info
;
9663 wrel
->r_addend
= rel
->r_addend
;
9666 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9667 &local_syms
, NULL
, NULL
))
9670 elf_section_data (toc
)->relocs
= toc_relocs
;
9671 toc
->reloc_count
= wrel
- toc_relocs
;
9672 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9673 sz
= rel_hdr
->sh_entsize
;
9674 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9677 else if (toc_relocs
!= NULL
9678 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9681 if (local_syms
!= NULL
9682 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9684 if (!info
->keep_memory
)
9687 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9695 /* Return true iff input section I references the TOC using
9696 instructions limited to +/-32k offsets. */
9699 ppc64_elf_has_small_toc_reloc (asection
*i
)
9701 return (is_ppc64_elf (i
->owner
)
9702 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9705 /* Allocate space for one GOT entry. */
9708 allocate_got (struct elf_link_hash_entry
*h
,
9709 struct bfd_link_info
*info
,
9710 struct got_entry
*gent
)
9712 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9713 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9714 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9716 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9717 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9718 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9720 gent
->got
.offset
= got
->size
;
9721 got
->size
+= entsize
;
9723 if (h
->type
== STT_GNU_IFUNC
)
9725 htab
->elf
.irelplt
->size
+= rentsize
;
9726 htab
->got_reli_size
+= rentsize
;
9728 else if ((bfd_link_pic (info
)
9729 || (htab
->elf
.dynamic_sections_created
9731 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9732 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9734 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9735 relgot
->size
+= rentsize
;
9739 /* This function merges got entries in the same toc group. */
9742 merge_got_entries (struct got_entry
**pent
)
9744 struct got_entry
*ent
, *ent2
;
9746 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9747 if (!ent
->is_indirect
)
9748 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9749 if (!ent2
->is_indirect
9750 && ent2
->addend
== ent
->addend
9751 && ent2
->tls_type
== ent
->tls_type
9752 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9754 ent2
->is_indirect
= TRUE
;
9755 ent2
->got
.ent
= ent
;
9759 /* If H is undefined, make it dynamic if that makes sense. */
9762 ensure_undef_dynamic (struct bfd_link_info
*info
,
9763 struct elf_link_hash_entry
*h
)
9765 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9767 if (htab
->dynamic_sections_created
9768 && ((info
->dynamic_undefined_weak
!= 0
9769 && h
->root
.type
== bfd_link_hash_undefweak
)
9770 || h
->root
.type
== bfd_link_hash_undefined
)
9773 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9774 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9778 /* Allocate space in .plt, .got and associated reloc sections for
9782 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9784 struct bfd_link_info
*info
;
9785 struct ppc_link_hash_table
*htab
;
9787 struct ppc_link_hash_entry
*eh
;
9788 struct got_entry
**pgent
, *gent
;
9790 if (h
->root
.type
== bfd_link_hash_indirect
)
9793 info
= (struct bfd_link_info
*) inf
;
9794 htab
= ppc_hash_table (info
);
9798 eh
= (struct ppc_link_hash_entry
*) h
;
9799 /* Run through the TLS GD got entries first if we're changing them
9801 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9802 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9803 if (gent
->got
.refcount
> 0
9804 && (gent
->tls_type
& TLS_GD
) != 0)
9806 /* This was a GD entry that has been converted to TPREL. If
9807 there happens to be a TPREL entry we can use that one. */
9808 struct got_entry
*ent
;
9809 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9810 if (ent
->got
.refcount
> 0
9811 && (ent
->tls_type
& TLS_TPREL
) != 0
9812 && ent
->addend
== gent
->addend
9813 && ent
->owner
== gent
->owner
)
9815 gent
->got
.refcount
= 0;
9819 /* If not, then we'll be using our own TPREL entry. */
9820 if (gent
->got
.refcount
!= 0)
9821 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9824 /* Remove any list entry that won't generate a word in the GOT before
9825 we call merge_got_entries. Otherwise we risk merging to empty
9827 pgent
= &h
->got
.glist
;
9828 while ((gent
= *pgent
) != NULL
)
9829 if (gent
->got
.refcount
> 0)
9831 if ((gent
->tls_type
& TLS_LD
) != 0
9834 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9835 *pgent
= gent
->next
;
9838 pgent
= &gent
->next
;
9841 *pgent
= gent
->next
;
9843 if (!htab
->do_multi_toc
)
9844 merge_got_entries (&h
->got
.glist
);
9846 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9847 if (!gent
->is_indirect
)
9849 /* Make sure this symbol is output as a dynamic symbol. */
9850 if (!ensure_undef_dynamic (info
, h
))
9853 if (!is_ppc64_elf (gent
->owner
))
9856 allocate_got (h
, info
, gent
);
9859 /* If no dynamic sections we can't have dynamic relocs, except for
9860 IFUNCs which are handled even in static executables. */
9861 if (!htab
->elf
.dynamic_sections_created
9862 && h
->type
!= STT_GNU_IFUNC
)
9863 eh
->dyn_relocs
= NULL
;
9865 /* Also discard relocs on undefined weak syms with non-default
9866 visibility, or when dynamic_undefined_weak says so. */
9867 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9868 eh
->dyn_relocs
= NULL
;
9870 if (eh
->dyn_relocs
!= NULL
)
9872 struct elf_dyn_relocs
*p
, **pp
;
9874 /* In the shared -Bsymbolic case, discard space allocated for
9875 dynamic pc-relative relocs against symbols which turn out to
9876 be defined in regular objects. For the normal shared case,
9877 discard space for relocs that have become local due to symbol
9878 visibility changes. */
9880 if (bfd_link_pic (info
))
9882 /* Relocs that use pc_count are those that appear on a call
9883 insn, or certain REL relocs (see must_be_dyn_reloc) that
9884 can be generated via assembly. We want calls to
9885 protected symbols to resolve directly to the function
9886 rather than going via the plt. If people want function
9887 pointer comparisons to work as expected then they should
9888 avoid writing weird assembly. */
9889 if (SYMBOL_CALLS_LOCAL (info
, h
))
9891 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9893 p
->count
-= p
->pc_count
;
9902 if (eh
->dyn_relocs
!= NULL
)
9904 /* Make sure this symbol is output as a dynamic symbol. */
9905 if (!ensure_undef_dynamic (info
, h
))
9909 else if (h
->type
== STT_GNU_IFUNC
)
9911 /* A plt entry is always created when making direct calls to
9912 an ifunc, even when building a static executable, but
9913 that doesn't cover all cases. We may have only an ifunc
9914 initialised function pointer for a given ifunc symbol.
9916 For ELFv2, dynamic relocations are not required when
9917 generating a global entry PLT stub. */
9918 if (abiversion (info
->output_bfd
) >= 2)
9920 if (global_entry_stub (h
))
9921 eh
->dyn_relocs
= NULL
;
9924 /* For ELFv1 we have function descriptors. Descriptors need
9925 to be treated like PLT entries and thus have dynamic
9926 relocations. One exception is when the function
9927 descriptor is copied into .dynbss (which should only
9928 happen with ancient versions of gcc). */
9929 else if (h
->needs_copy
)
9930 eh
->dyn_relocs
= NULL
;
9932 else if (ELIMINATE_COPY_RELOCS
)
9934 /* For the non-pic case, discard space for relocs against
9935 symbols which turn out to need copy relocs or are not
9940 /* Make sure this symbol is output as a dynamic symbol. */
9941 if (!ensure_undef_dynamic (info
, h
))
9944 if (h
->dynindx
== -1)
9945 eh
->dyn_relocs
= NULL
;
9948 eh
->dyn_relocs
= NULL
;
9951 /* Finally, allocate space. */
9952 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9954 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9955 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9956 sreloc
= htab
->elf
.irelplt
;
9957 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9961 if ((htab
->elf
.dynamic_sections_created
9962 && h
->dynindx
!= -1)
9963 || h
->type
== STT_GNU_IFUNC
)
9965 struct plt_entry
*pent
;
9966 bfd_boolean doneone
= FALSE
;
9967 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9968 if (pent
->plt
.refcount
> 0)
9970 if (!htab
->elf
.dynamic_sections_created
9971 || h
->dynindx
== -1)
9974 pent
->plt
.offset
= s
->size
;
9975 s
->size
+= PLT_ENTRY_SIZE (htab
);
9976 s
= htab
->elf
.irelplt
;
9980 /* If this is the first .plt entry, make room for the special
9984 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9986 pent
->plt
.offset
= s
->size
;
9988 /* Make room for this entry. */
9989 s
->size
+= PLT_ENTRY_SIZE (htab
);
9991 /* Make room for the .glink code. */
9994 s
->size
+= GLINK_CALL_STUB_SIZE
;
9997 /* We need bigger stubs past index 32767. */
9998 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
10005 /* We also need to make an entry in the .rela.plt section. */
10006 s
= htab
->elf
.srelplt
;
10008 s
->size
+= sizeof (Elf64_External_Rela
);
10012 pent
->plt
.offset
= (bfd_vma
) -1;
10015 h
->plt
.plist
= NULL
;
10021 h
->plt
.plist
= NULL
;
10028 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10029 to set up space for global entry stubs. These are put in glink,
10030 after the branch table. */
10033 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
10035 struct bfd_link_info
*info
;
10036 struct ppc_link_hash_table
*htab
;
10037 struct plt_entry
*pent
;
10040 if (h
->root
.type
== bfd_link_hash_indirect
)
10043 if (!h
->pointer_equality_needed
)
10046 if (h
->def_regular
)
10050 htab
= ppc_hash_table (info
);
10055 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
10056 if (pent
->plt
.offset
!= (bfd_vma
) -1
10057 && pent
->addend
== 0)
10059 /* For ELFv2, if this symbol is not defined in a regular file
10060 and we are not generating a shared library or pie, then we
10061 need to define the symbol in the executable on a call stub.
10062 This is to avoid text relocations. */
10063 s
->size
= (s
->size
+ 15) & -16;
10064 h
->root
.type
= bfd_link_hash_defined
;
10065 h
->root
.u
.def
.section
= s
;
10066 h
->root
.u
.def
.value
= s
->size
;
10073 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10074 read-only sections. */
10077 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
10079 if (h
->root
.type
== bfd_link_hash_indirect
)
10082 if (readonly_dynrelocs (h
))
10084 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
10086 /* Not an error, just cut short the traversal. */
10092 /* Set the sizes of the dynamic sections. */
10095 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
10096 struct bfd_link_info
*info
)
10098 struct ppc_link_hash_table
*htab
;
10101 bfd_boolean relocs
;
10103 struct got_entry
*first_tlsld
;
10105 htab
= ppc_hash_table (info
);
10109 dynobj
= htab
->elf
.dynobj
;
10110 if (dynobj
== NULL
)
10113 if (htab
->elf
.dynamic_sections_created
)
10115 /* Set the contents of the .interp section to the interpreter. */
10116 if (bfd_link_executable (info
) && !info
->nointerp
)
10118 s
= bfd_get_linker_section (dynobj
, ".interp");
10121 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10122 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10126 /* Set up .got offsets for local syms, and space for local dynamic
10128 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10130 struct got_entry
**lgot_ents
;
10131 struct got_entry
**end_lgot_ents
;
10132 struct plt_entry
**local_plt
;
10133 struct plt_entry
**end_local_plt
;
10134 unsigned char *lgot_masks
;
10135 bfd_size_type locsymcount
;
10136 Elf_Internal_Shdr
*symtab_hdr
;
10138 if (!is_ppc64_elf (ibfd
))
10141 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10143 struct ppc_dyn_relocs
*p
;
10145 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10147 if (!bfd_is_abs_section (p
->sec
)
10148 && bfd_is_abs_section (p
->sec
->output_section
))
10150 /* Input section has been discarded, either because
10151 it is a copy of a linkonce section or due to
10152 linker script /DISCARD/, so we'll be discarding
10155 else if (p
->count
!= 0)
10157 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10159 srel
= htab
->elf
.irelplt
;
10160 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10161 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10162 info
->flags
|= DF_TEXTREL
;
10167 lgot_ents
= elf_local_got_ents (ibfd
);
10171 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10172 locsymcount
= symtab_hdr
->sh_info
;
10173 end_lgot_ents
= lgot_ents
+ locsymcount
;
10174 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10175 end_local_plt
= local_plt
+ locsymcount
;
10176 lgot_masks
= (unsigned char *) end_local_plt
;
10177 s
= ppc64_elf_tdata (ibfd
)->got
;
10178 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10180 struct got_entry
**pent
, *ent
;
10183 while ((ent
= *pent
) != NULL
)
10184 if (ent
->got
.refcount
> 0)
10186 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10188 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10193 unsigned int ent_size
= 8;
10194 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10196 ent
->got
.offset
= s
->size
;
10197 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10202 s
->size
+= ent_size
;
10203 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10205 htab
->elf
.irelplt
->size
+= rel_size
;
10206 htab
->got_reli_size
+= rel_size
;
10208 else if (bfd_link_pic (info
))
10210 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10211 srel
->size
+= rel_size
;
10220 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10221 for (; local_plt
< end_local_plt
; ++local_plt
)
10223 struct plt_entry
*ent
;
10225 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10226 if (ent
->plt
.refcount
> 0)
10228 s
= htab
->elf
.iplt
;
10229 ent
->plt
.offset
= s
->size
;
10230 s
->size
+= PLT_ENTRY_SIZE (htab
);
10232 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10235 ent
->plt
.offset
= (bfd_vma
) -1;
10239 /* Allocate global sym .plt and .got entries, and space for global
10240 sym dynamic relocs. */
10241 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10242 /* Stash the end of glink branch table. */
10243 if (htab
->glink
!= NULL
)
10244 htab
->glink
->rawsize
= htab
->glink
->size
;
10246 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10247 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10249 first_tlsld
= NULL
;
10250 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10252 struct got_entry
*ent
;
10254 if (!is_ppc64_elf (ibfd
))
10257 ent
= ppc64_tlsld_got (ibfd
);
10258 if (ent
->got
.refcount
> 0)
10260 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10262 ent
->is_indirect
= TRUE
;
10263 ent
->got
.ent
= first_tlsld
;
10267 if (first_tlsld
== NULL
)
10269 s
= ppc64_elf_tdata (ibfd
)->got
;
10270 ent
->got
.offset
= s
->size
;
10273 if (bfd_link_pic (info
))
10275 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10276 srel
->size
+= sizeof (Elf64_External_Rela
);
10281 ent
->got
.offset
= (bfd_vma
) -1;
10284 /* We now have determined the sizes of the various dynamic sections.
10285 Allocate memory for them. */
10287 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10289 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10292 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10293 /* These haven't been allocated yet; don't strip. */
10295 else if (s
== htab
->elf
.sgot
10296 || s
== htab
->elf
.splt
10297 || s
== htab
->elf
.iplt
10298 || s
== htab
->glink
10299 || s
== htab
->elf
.sdynbss
10300 || s
== htab
->elf
.sdynrelro
)
10302 /* Strip this section if we don't need it; see the
10305 else if (s
== htab
->glink_eh_frame
)
10307 if (!bfd_is_abs_section (s
->output_section
))
10308 /* Not sized yet. */
10311 else if (CONST_STRNEQ (s
->name
, ".rela"))
10315 if (s
!= htab
->elf
.srelplt
)
10318 /* We use the reloc_count field as a counter if we need
10319 to copy relocs into the output file. */
10320 s
->reloc_count
= 0;
10325 /* It's not one of our sections, so don't allocate space. */
10331 /* If we don't need this section, strip it from the
10332 output file. This is mostly to handle .rela.bss and
10333 .rela.plt. We must create both sections in
10334 create_dynamic_sections, because they must be created
10335 before the linker maps input sections to output
10336 sections. The linker does that before
10337 adjust_dynamic_symbol is called, and it is that
10338 function which decides whether anything needs to go
10339 into these sections. */
10340 s
->flags
|= SEC_EXCLUDE
;
10344 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10347 /* Allocate memory for the section contents. We use bfd_zalloc
10348 here in case unused entries are not reclaimed before the
10349 section's contents are written out. This should not happen,
10350 but this way if it does we get a R_PPC64_NONE reloc in .rela
10351 sections instead of garbage.
10352 We also rely on the section contents being zero when writing
10353 the GOT and .dynrelro. */
10354 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10355 if (s
->contents
== NULL
)
10359 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10361 if (!is_ppc64_elf (ibfd
))
10364 s
= ppc64_elf_tdata (ibfd
)->got
;
10365 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10368 s
->flags
|= SEC_EXCLUDE
;
10371 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10372 if (s
->contents
== NULL
)
10376 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10380 s
->flags
|= SEC_EXCLUDE
;
10383 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10384 if (s
->contents
== NULL
)
10387 s
->reloc_count
= 0;
10392 if (htab
->elf
.dynamic_sections_created
)
10394 bfd_boolean tls_opt
;
10396 /* Add some entries to the .dynamic section. We fill in the
10397 values later, in ppc64_elf_finish_dynamic_sections, but we
10398 must add the entries now so that we get the correct size for
10399 the .dynamic section. The DT_DEBUG entry is filled in by the
10400 dynamic linker and used by the debugger. */
10401 #define add_dynamic_entry(TAG, VAL) \
10402 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10404 if (bfd_link_executable (info
))
10406 if (!add_dynamic_entry (DT_DEBUG
, 0))
10410 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10412 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10413 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10414 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10415 || !add_dynamic_entry (DT_JMPREL
, 0)
10416 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10420 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10422 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10423 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10427 tls_opt
= (htab
->params
->tls_get_addr_opt
10428 && htab
->tls_get_addr_fd
!= NULL
10429 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10430 if (tls_opt
|| !htab
->opd_abi
)
10432 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10438 if (!add_dynamic_entry (DT_RELA
, 0)
10439 || !add_dynamic_entry (DT_RELASZ
, 0)
10440 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10443 /* If any dynamic relocs apply to a read-only section,
10444 then we need a DT_TEXTREL entry. */
10445 if ((info
->flags
& DF_TEXTREL
) == 0)
10446 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10448 if ((info
->flags
& DF_TEXTREL
) != 0)
10450 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10455 #undef add_dynamic_entry
10460 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10463 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10465 if (h
->plt
.plist
!= NULL
10467 && !h
->pointer_equality_needed
)
10470 return _bfd_elf_hash_symbol (h
);
10473 /* Determine the type of stub needed, if any, for a call. */
10475 static inline enum ppc_stub_type
10476 ppc_type_of_stub (asection
*input_sec
,
10477 const Elf_Internal_Rela
*rel
,
10478 struct ppc_link_hash_entry
**hash
,
10479 struct plt_entry
**plt_ent
,
10480 bfd_vma destination
,
10481 unsigned long local_off
)
10483 struct ppc_link_hash_entry
*h
= *hash
;
10485 bfd_vma branch_offset
;
10486 bfd_vma max_branch_offset
;
10487 enum elf_ppc64_reloc_type r_type
;
10491 struct plt_entry
*ent
;
10492 struct ppc_link_hash_entry
*fdh
= h
;
10494 && h
->oh
->is_func_descriptor
)
10496 fdh
= ppc_follow_link (h
->oh
);
10500 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10501 if (ent
->addend
== rel
->r_addend
10502 && ent
->plt
.offset
!= (bfd_vma
) -1)
10505 return ppc_stub_plt_call
;
10508 /* Here, we know we don't have a plt entry. If we don't have a
10509 either a defined function descriptor or a defined entry symbol
10510 in a regular object file, then it is pointless trying to make
10511 any other type of stub. */
10512 if (!is_static_defined (&fdh
->elf
)
10513 && !is_static_defined (&h
->elf
))
10514 return ppc_stub_none
;
10516 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10518 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10519 struct plt_entry
**local_plt
= (struct plt_entry
**)
10520 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10521 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10523 if (local_plt
[r_symndx
] != NULL
)
10525 struct plt_entry
*ent
;
10527 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10528 if (ent
->addend
== rel
->r_addend
10529 && ent
->plt
.offset
!= (bfd_vma
) -1)
10532 return ppc_stub_plt_call
;
10537 /* Determine where the call point is. */
10538 location
= (input_sec
->output_offset
10539 + input_sec
->output_section
->vma
10542 branch_offset
= destination
- location
;
10543 r_type
= ELF64_R_TYPE (rel
->r_info
);
10545 /* Determine if a long branch stub is needed. */
10546 max_branch_offset
= 1 << 25;
10547 if (r_type
!= R_PPC64_REL24
)
10548 max_branch_offset
= 1 << 15;
10550 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10551 /* We need a stub. Figure out whether a long_branch or plt_branch
10552 is needed later. */
10553 return ppc_stub_long_branch
;
10555 return ppc_stub_none
;
10558 /* With power7 weakly ordered memory model, it is possible for ld.so
10559 to update a plt entry in one thread and have another thread see a
10560 stale zero toc entry. To avoid this we need some sort of acquire
10561 barrier in the call stub. One solution is to make the load of the
10562 toc word seem to appear to depend on the load of the function entry
10563 word. Another solution is to test for r2 being zero, and branch to
10564 the appropriate glink entry if so.
10566 . fake dep barrier compare
10567 . ld 12,xxx(2) ld 12,xxx(2)
10568 . mtctr 12 mtctr 12
10569 . xor 11,12,12 ld 2,xxx+8(2)
10570 . add 2,2,11 cmpldi 2,0
10571 . ld 2,xxx+8(2) bnectr+
10572 . bctr b <glink_entry>
10574 The solution involving the compare turns out to be faster, so
10575 that's what we use unless the branch won't reach. */
10577 #define ALWAYS_USE_FAKE_DEP 0
10578 #define ALWAYS_EMIT_R2SAVE 0
10580 #define PPC_LO(v) ((v) & 0xffff)
10581 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10582 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10584 static inline unsigned int
10585 plt_stub_size (struct ppc_link_hash_table
*htab
,
10586 struct ppc_stub_hash_entry
*stub_entry
,
10589 unsigned size
= 12;
10591 if (ALWAYS_EMIT_R2SAVE
10592 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10594 if (PPC_HA (off
) != 0)
10599 if (htab
->params
->plt_static_chain
)
10601 if (htab
->params
->plt_thread_safe
10602 && htab
->elf
.dynamic_sections_created
10603 && stub_entry
->h
!= NULL
10604 && stub_entry
->h
->elf
.dynindx
!= -1)
10606 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10609 if (stub_entry
->h
!= NULL
10610 && (stub_entry
->h
== htab
->tls_get_addr_fd
10611 || stub_entry
->h
== htab
->tls_get_addr
)
10612 && htab
->params
->tls_get_addr_opt
)
10615 if (ALWAYS_EMIT_R2SAVE
10616 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10622 /* Depending on the sign of plt_stub_align:
10623 If positive, return the padding to align to a 2**plt_stub_align
10625 If negative, if this stub would cross fewer 2**plt_stub_align
10626 boundaries if we align, then return the padding needed to do so. */
10628 static inline unsigned int
10629 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10630 struct ppc_stub_hash_entry
*stub_entry
,
10634 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10635 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10637 if (htab
->params
->plt_stub_align
>= 0)
10639 stub_align
= 1 << htab
->params
->plt_stub_align
;
10640 if ((stub_off
& (stub_align
- 1)) != 0)
10641 return stub_align
- (stub_off
& (stub_align
- 1));
10645 stub_align
= 1 << -htab
->params
->plt_stub_align
;
10646 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10647 > ((stub_size
- 1) & -stub_align
))
10648 return stub_align
- (stub_off
& (stub_align
- 1));
10652 /* Build a .plt call stub. */
10654 static inline bfd_byte
*
10655 build_plt_stub (struct ppc_link_hash_table
*htab
,
10656 struct ppc_stub_hash_entry
*stub_entry
,
10657 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10659 bfd
*obfd
= htab
->params
->stub_bfd
;
10660 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10661 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10662 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10663 && htab
->elf
.dynamic_sections_created
10664 && stub_entry
->h
!= NULL
10665 && stub_entry
->h
->elf
.dynindx
!= -1);
10666 bfd_boolean use_fake_dep
= plt_thread_safe
;
10667 bfd_vma cmp_branch_off
= 0;
10669 if (!ALWAYS_USE_FAKE_DEP
10672 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10673 || stub_entry
->h
== htab
->tls_get_addr
)
10674 && htab
->params
->tls_get_addr_opt
))
10676 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10677 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10678 / PLT_ENTRY_SIZE (htab
));
10679 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10682 if (pltindex
> 32768)
10683 glinkoff
+= (pltindex
- 32768) * 4;
10685 + htab
->glink
->output_offset
10686 + htab
->glink
->output_section
->vma
);
10687 from
= (p
- stub_entry
->group
->stub_sec
->contents
10688 + 4 * (ALWAYS_EMIT_R2SAVE
10689 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10690 + 4 * (PPC_HA (offset
) != 0)
10691 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10692 != PPC_HA (offset
))
10693 + 4 * (plt_static_chain
!= 0)
10695 + stub_entry
->group
->stub_sec
->output_offset
10696 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10697 cmp_branch_off
= to
- from
;
10698 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10701 if (PPC_HA (offset
) != 0)
10705 if (ALWAYS_EMIT_R2SAVE
10706 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10707 r
[0].r_offset
+= 4;
10708 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10709 r
[1].r_offset
= r
[0].r_offset
+ 4;
10710 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10711 r
[1].r_addend
= r
[0].r_addend
;
10714 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10716 r
[2].r_offset
= r
[1].r_offset
+ 4;
10717 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10718 r
[2].r_addend
= r
[0].r_addend
;
10722 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10723 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10724 r
[2].r_addend
= r
[0].r_addend
+ 8;
10725 if (plt_static_chain
)
10727 r
[3].r_offset
= r
[2].r_offset
+ 4;
10728 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10729 r
[3].r_addend
= r
[0].r_addend
+ 16;
10734 if (ALWAYS_EMIT_R2SAVE
10735 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10736 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10739 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10740 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10744 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10745 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10748 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10750 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10753 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10758 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10759 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10761 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10762 if (plt_static_chain
)
10763 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10770 if (ALWAYS_EMIT_R2SAVE
10771 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10772 r
[0].r_offset
+= 4;
10773 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10776 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10778 r
[1].r_offset
= r
[0].r_offset
+ 4;
10779 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10780 r
[1].r_addend
= r
[0].r_addend
;
10784 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10785 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10786 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10787 if (plt_static_chain
)
10789 r
[2].r_offset
= r
[1].r_offset
+ 4;
10790 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10791 r
[2].r_addend
= r
[0].r_addend
+ 8;
10796 if (ALWAYS_EMIT_R2SAVE
10797 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10798 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10799 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10801 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10803 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10806 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10811 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10812 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10814 if (plt_static_chain
)
10815 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10816 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10819 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10821 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10822 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10823 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10826 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10830 /* Build a special .plt call stub for __tls_get_addr. */
10832 #define LD_R11_0R3 0xe9630000
10833 #define LD_R12_0R3 0xe9830000
10834 #define MR_R0_R3 0x7c601b78
10835 #define CMPDI_R11_0 0x2c2b0000
10836 #define ADD_R3_R12_R13 0x7c6c6a14
10837 #define BEQLR 0x4d820020
10838 #define MR_R3_R0 0x7c030378
10839 #define STD_R11_0R1 0xf9610000
10840 #define BCTRL 0x4e800421
10841 #define LD_R11_0R1 0xe9610000
10842 #define MTLR_R11 0x7d6803a6
10844 static inline bfd_byte
*
10845 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10846 struct ppc_stub_hash_entry
*stub_entry
,
10847 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10849 bfd
*obfd
= htab
->params
->stub_bfd
;
10851 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10852 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10853 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10854 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10855 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10856 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10857 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10859 r
[0].r_offset
+= 7 * 4;
10860 if (!ALWAYS_EMIT_R2SAVE
10861 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10862 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10864 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10865 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10868 r
[0].r_offset
+= 2 * 4;
10869 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10870 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10872 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10873 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10874 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10875 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10880 static Elf_Internal_Rela
*
10881 get_relocs (asection
*sec
, int count
)
10883 Elf_Internal_Rela
*relocs
;
10884 struct bfd_elf_section_data
*elfsec_data
;
10886 elfsec_data
= elf_section_data (sec
);
10887 relocs
= elfsec_data
->relocs
;
10888 if (relocs
== NULL
)
10890 bfd_size_type relsize
;
10891 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10892 relocs
= bfd_alloc (sec
->owner
, relsize
);
10893 if (relocs
== NULL
)
10895 elfsec_data
->relocs
= relocs
;
10896 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10897 sizeof (Elf_Internal_Shdr
));
10898 if (elfsec_data
->rela
.hdr
== NULL
)
10900 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10901 * sizeof (Elf64_External_Rela
));
10902 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10903 sec
->reloc_count
= 0;
10905 relocs
+= sec
->reloc_count
;
10906 sec
->reloc_count
+= count
;
10911 get_r2off (struct bfd_link_info
*info
,
10912 struct ppc_stub_hash_entry
*stub_entry
)
10914 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10915 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10919 /* Support linking -R objects. Get the toc pointer from the
10922 if (!htab
->opd_abi
)
10924 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10925 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10927 if (strcmp (opd
->name
, ".opd") != 0
10928 || opd
->reloc_count
!= 0)
10930 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10931 stub_entry
->h
->elf
.root
.root
.string
);
10932 bfd_set_error (bfd_error_bad_value
);
10933 return (bfd_vma
) -1;
10935 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10936 return (bfd_vma
) -1;
10937 r2off
= bfd_get_64 (opd
->owner
, buf
);
10938 r2off
-= elf_gp (info
->output_bfd
);
10940 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10945 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10947 struct ppc_stub_hash_entry
*stub_entry
;
10948 struct ppc_branch_hash_entry
*br_entry
;
10949 struct bfd_link_info
*info
;
10950 struct ppc_link_hash_table
*htab
;
10955 Elf_Internal_Rela
*r
;
10958 /* Massage our args to the form they really have. */
10959 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10962 htab
= ppc_hash_table (info
);
10966 /* Make a note of the offset within the stubs for this entry. */
10967 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10968 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10970 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10971 switch (stub_entry
->stub_type
)
10973 case ppc_stub_long_branch
:
10974 case ppc_stub_long_branch_r2off
:
10975 /* Branches are relative. This is where we are going to. */
10976 dest
= (stub_entry
->target_value
10977 + stub_entry
->target_section
->output_offset
10978 + stub_entry
->target_section
->output_section
->vma
);
10979 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10982 /* And this is where we are coming from. */
10983 off
-= (stub_entry
->stub_offset
10984 + stub_entry
->group
->stub_sec
->output_offset
10985 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10988 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10990 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10992 if (r2off
== (bfd_vma
) -1)
10994 htab
->stub_error
= TRUE
;
10997 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11000 if (PPC_HA (r2off
) != 0)
11002 bfd_put_32 (htab
->params
->stub_bfd
,
11003 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11007 if (PPC_LO (r2off
) != 0)
11009 bfd_put_32 (htab
->params
->stub_bfd
,
11010 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11016 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
11018 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
11020 info
->callbacks
->einfo
11021 (_("%P: long branch stub `%s' offset overflow\n"),
11022 stub_entry
->root
.string
);
11023 htab
->stub_error
= TRUE
;
11027 if (info
->emitrelocations
)
11029 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
11032 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11033 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
11034 r
->r_addend
= dest
;
11035 if (stub_entry
->h
!= NULL
)
11037 struct elf_link_hash_entry
**hashes
;
11038 unsigned long symndx
;
11039 struct ppc_link_hash_entry
*h
;
11041 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
11042 if (hashes
== NULL
)
11044 bfd_size_type hsize
;
11046 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
11047 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
11048 if (hashes
== NULL
)
11050 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
11051 htab
->stub_globals
= 1;
11053 symndx
= htab
->stub_globals
++;
11055 hashes
[symndx
] = &h
->elf
;
11056 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
11057 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
11058 h
= ppc_follow_link (h
->oh
);
11059 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
11060 /* H is an opd symbol. The addend must be zero. */
11064 off
= (h
->elf
.root
.u
.def
.value
11065 + h
->elf
.root
.u
.def
.section
->output_offset
11066 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
11067 r
->r_addend
-= off
;
11073 case ppc_stub_plt_branch
:
11074 case ppc_stub_plt_branch_r2off
:
11075 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11076 stub_entry
->root
.string
+ 9,
11078 if (br_entry
== NULL
)
11080 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
11081 stub_entry
->root
.string
);
11082 htab
->stub_error
= TRUE
;
11086 dest
= (stub_entry
->target_value
11087 + stub_entry
->target_section
->output_offset
11088 + stub_entry
->target_section
->output_section
->vma
);
11089 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11090 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11092 bfd_put_64 (htab
->brlt
->owner
, dest
,
11093 htab
->brlt
->contents
+ br_entry
->offset
);
11095 if (br_entry
->iter
== htab
->stub_iteration
)
11097 br_entry
->iter
= 0;
11099 if (htab
->relbrlt
!= NULL
)
11101 /* Create a reloc for the branch lookup table entry. */
11102 Elf_Internal_Rela rela
;
11105 rela
.r_offset
= (br_entry
->offset
11106 + htab
->brlt
->output_offset
11107 + htab
->brlt
->output_section
->vma
);
11108 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11109 rela
.r_addend
= dest
;
11111 rl
= htab
->relbrlt
->contents
;
11112 rl
+= (htab
->relbrlt
->reloc_count
++
11113 * sizeof (Elf64_External_Rela
));
11114 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
11116 else if (info
->emitrelocations
)
11118 r
= get_relocs (htab
->brlt
, 1);
11121 /* brlt, being SEC_LINKER_CREATED does not go through the
11122 normal reloc processing. Symbols and offsets are not
11123 translated from input file to output file form, so
11124 set up the offset per the output file. */
11125 r
->r_offset
= (br_entry
->offset
11126 + htab
->brlt
->output_offset
11127 + htab
->brlt
->output_section
->vma
);
11128 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11129 r
->r_addend
= dest
;
11133 dest
= (br_entry
->offset
11134 + htab
->brlt
->output_offset
11135 + htab
->brlt
->output_section
->vma
);
11138 - elf_gp (htab
->brlt
->output_section
->owner
)
11139 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11141 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11143 info
->callbacks
->einfo
11144 (_("%P: linkage table error against `%T'\n"),
11145 stub_entry
->root
.string
);
11146 bfd_set_error (bfd_error_bad_value
);
11147 htab
->stub_error
= TRUE
;
11151 if (info
->emitrelocations
)
11153 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11156 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11157 if (bfd_big_endian (info
->output_bfd
))
11158 r
[0].r_offset
+= 2;
11159 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11160 r
[0].r_offset
+= 4;
11161 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11162 r
[0].r_addend
= dest
;
11163 if (PPC_HA (off
) != 0)
11165 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11166 r
[1].r_offset
= r
[0].r_offset
+ 4;
11167 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11168 r
[1].r_addend
= r
[0].r_addend
;
11172 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11174 if (PPC_HA (off
) != 0)
11177 bfd_put_32 (htab
->params
->stub_bfd
,
11178 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11180 bfd_put_32 (htab
->params
->stub_bfd
,
11181 LD_R12_0R12
| PPC_LO (off
), loc
);
11186 bfd_put_32 (htab
->params
->stub_bfd
,
11187 LD_R12_0R2
| PPC_LO (off
), loc
);
11192 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11194 if (r2off
== (bfd_vma
) -1)
11196 htab
->stub_error
= TRUE
;
11200 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11203 if (PPC_HA (off
) != 0)
11206 bfd_put_32 (htab
->params
->stub_bfd
,
11207 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11209 bfd_put_32 (htab
->params
->stub_bfd
,
11210 LD_R12_0R12
| PPC_LO (off
), loc
);
11213 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11215 if (PPC_HA (r2off
) != 0)
11219 bfd_put_32 (htab
->params
->stub_bfd
,
11220 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11222 if (PPC_LO (r2off
) != 0)
11226 bfd_put_32 (htab
->params
->stub_bfd
,
11227 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11231 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11233 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11236 case ppc_stub_plt_call
:
11237 case ppc_stub_plt_call_r2save
:
11238 if (stub_entry
->h
!= NULL
11239 && stub_entry
->h
->is_func_descriptor
11240 && stub_entry
->h
->oh
!= NULL
)
11242 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11244 /* If the old-ABI "dot-symbol" is undefined make it weak so
11245 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11246 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11247 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11248 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11249 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11252 /* Now build the stub. */
11253 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11254 if (dest
>= (bfd_vma
) -2)
11257 plt
= htab
->elf
.splt
;
11258 if (!htab
->elf
.dynamic_sections_created
11259 || stub_entry
->h
== NULL
11260 || stub_entry
->h
->elf
.dynindx
== -1)
11261 plt
= htab
->elf
.iplt
;
11263 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11265 if (stub_entry
->h
== NULL
11266 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11268 Elf_Internal_Rela rela
;
11271 rela
.r_offset
= dest
;
11273 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11275 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11276 rela
.r_addend
= (stub_entry
->target_value
11277 + stub_entry
->target_section
->output_offset
11278 + stub_entry
->target_section
->output_section
->vma
);
11280 rl
= (htab
->elf
.irelplt
->contents
11281 + (htab
->elf
.irelplt
->reloc_count
++
11282 * sizeof (Elf64_External_Rela
)));
11283 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11284 stub_entry
->plt_ent
->plt
.offset
|= 1;
11285 htab
->local_ifunc_resolver
= 1;
11289 - elf_gp (plt
->output_section
->owner
)
11290 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11292 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11294 info
->callbacks
->einfo
11295 /* xgettext:c-format */
11296 (_("%P: linkage table error against `%T'\n"),
11297 stub_entry
->h
!= NULL
11298 ? stub_entry
->h
->elf
.root
.root
.string
11300 bfd_set_error (bfd_error_bad_value
);
11301 htab
->stub_error
= TRUE
;
11305 if (htab
->params
->plt_stub_align
!= 0)
11307 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11309 stub_entry
->group
->stub_sec
->size
+= pad
;
11310 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11315 if (info
->emitrelocations
)
11317 r
= get_relocs (stub_entry
->group
->stub_sec
,
11318 ((PPC_HA (off
) != 0)
11320 ? 2 + (htab
->params
->plt_static_chain
11321 && PPC_HA (off
+ 16) == PPC_HA (off
))
11325 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11326 if (bfd_big_endian (info
->output_bfd
))
11327 r
[0].r_offset
+= 2;
11328 r
[0].r_addend
= dest
;
11330 if (stub_entry
->h
!= NULL
11331 && (stub_entry
->h
== htab
->tls_get_addr_fd
11332 || stub_entry
->h
== htab
->tls_get_addr
)
11333 && htab
->params
->tls_get_addr_opt
)
11334 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11336 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11340 case ppc_stub_save_res
:
11348 stub_entry
->group
->stub_sec
->size
+= size
;
11350 if (htab
->params
->emit_stub_syms
)
11352 struct elf_link_hash_entry
*h
;
11355 const char *const stub_str
[] = { "long_branch",
11356 "long_branch_r2off",
11358 "plt_branch_r2off",
11362 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11363 len2
= strlen (stub_entry
->root
.string
);
11364 name
= bfd_malloc (len1
+ len2
+ 2);
11367 memcpy (name
, stub_entry
->root
.string
, 9);
11368 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11369 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11370 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11373 if (h
->root
.type
== bfd_link_hash_new
)
11375 h
->root
.type
= bfd_link_hash_defined
;
11376 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11377 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11378 h
->ref_regular
= 1;
11379 h
->def_regular
= 1;
11380 h
->ref_regular_nonweak
= 1;
11381 h
->forced_local
= 1;
11383 h
->root
.linker_def
= 1;
11390 /* As above, but don't actually build the stub. Just bump offset so
11391 we know stub section sizes, and select plt_branch stubs where
11392 long_branch stubs won't do. */
11395 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11397 struct ppc_stub_hash_entry
*stub_entry
;
11398 struct bfd_link_info
*info
;
11399 struct ppc_link_hash_table
*htab
;
11403 /* Massage our args to the form they really have. */
11404 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11407 htab
= ppc_hash_table (info
);
11411 if (stub_entry
->h
!= NULL
11412 && stub_entry
->h
->save_res
11413 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11414 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11416 /* Don't make stubs to out-of-line register save/restore
11417 functions. Instead, emit copies of the functions. */
11418 stub_entry
->group
->needs_save_res
= 1;
11419 stub_entry
->stub_type
= ppc_stub_save_res
;
11423 if (stub_entry
->stub_type
== ppc_stub_plt_call
11424 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11427 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11428 if (off
>= (bfd_vma
) -2)
11430 plt
= htab
->elf
.splt
;
11431 if (!htab
->elf
.dynamic_sections_created
11432 || stub_entry
->h
== NULL
11433 || stub_entry
->h
->elf
.dynindx
== -1)
11434 plt
= htab
->elf
.iplt
;
11435 off
+= (plt
->output_offset
11436 + plt
->output_section
->vma
11437 - elf_gp (plt
->output_section
->owner
)
11438 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11440 size
= plt_stub_size (htab
, stub_entry
, off
);
11441 if (stub_entry
->h
!= NULL
11442 && (stub_entry
->h
== htab
->tls_get_addr_fd
11443 || stub_entry
->h
== htab
->tls_get_addr
)
11444 && htab
->params
->tls_get_addr_opt
11445 && (ALWAYS_EMIT_R2SAVE
11446 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11447 stub_entry
->group
->tls_get_addr_opt_bctrl
11448 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11450 if (htab
->params
->plt_stub_align
)
11451 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11452 if (info
->emitrelocations
)
11454 stub_entry
->group
->stub_sec
->reloc_count
11455 += ((PPC_HA (off
) != 0)
11457 ? 2 + (htab
->params
->plt_static_chain
11458 && PPC_HA (off
+ 16) == PPC_HA (off
))
11460 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11465 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11468 bfd_vma local_off
= 0;
11470 off
= (stub_entry
->target_value
11471 + stub_entry
->target_section
->output_offset
11472 + stub_entry
->target_section
->output_section
->vma
);
11473 off
-= (stub_entry
->group
->stub_sec
->size
11474 + stub_entry
->group
->stub_sec
->output_offset
11475 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11477 /* Reset the stub type from the plt variant in case we now
11478 can reach with a shorter stub. */
11479 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11480 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11483 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11485 r2off
= get_r2off (info
, stub_entry
);
11486 if (r2off
== (bfd_vma
) -1)
11488 htab
->stub_error
= TRUE
;
11492 if (PPC_HA (r2off
) != 0)
11494 if (PPC_LO (r2off
) != 0)
11499 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11501 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11502 Do the same for -R objects without function descriptors. */
11503 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11504 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11506 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11508 struct ppc_branch_hash_entry
*br_entry
;
11510 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11511 stub_entry
->root
.string
+ 9,
11513 if (br_entry
== NULL
)
11515 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11516 stub_entry
->root
.string
);
11517 htab
->stub_error
= TRUE
;
11521 if (br_entry
->iter
!= htab
->stub_iteration
)
11523 br_entry
->iter
= htab
->stub_iteration
;
11524 br_entry
->offset
= htab
->brlt
->size
;
11525 htab
->brlt
->size
+= 8;
11527 if (htab
->relbrlt
!= NULL
)
11528 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11529 else if (info
->emitrelocations
)
11531 htab
->brlt
->reloc_count
+= 1;
11532 htab
->brlt
->flags
|= SEC_RELOC
;
11536 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11537 off
= (br_entry
->offset
11538 + htab
->brlt
->output_offset
11539 + htab
->brlt
->output_section
->vma
11540 - elf_gp (htab
->brlt
->output_section
->owner
)
11541 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11543 if (info
->emitrelocations
)
11545 stub_entry
->group
->stub_sec
->reloc_count
11546 += 1 + (PPC_HA (off
) != 0);
11547 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11550 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11553 if (PPC_HA (off
) != 0)
11559 if (PPC_HA (off
) != 0)
11562 if (PPC_HA (r2off
) != 0)
11564 if (PPC_LO (r2off
) != 0)
11568 else if (info
->emitrelocations
)
11570 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11571 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11575 stub_entry
->group
->stub_sec
->size
+= size
;
11579 /* Set up various things so that we can make a list of input sections
11580 for each output section included in the link. Returns -1 on error,
11581 0 when no stubs will be needed, and 1 on success. */
11584 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11588 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11593 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11594 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11595 htab
->sec_info
= bfd_zmalloc (amt
);
11596 if (htab
->sec_info
== NULL
)
11599 /* Set toc_off for com, und, abs and ind sections. */
11600 for (id
= 0; id
< 3; id
++)
11601 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11606 /* Set up for first pass at multitoc partitioning. */
11609 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11611 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11613 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11614 htab
->toc_bfd
= NULL
;
11615 htab
->toc_first_sec
= NULL
;
11618 /* The linker repeatedly calls this function for each TOC input section
11619 and linker generated GOT section. Group input bfds such that the toc
11620 within a group is less than 64k in size. */
11623 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11625 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11626 bfd_vma addr
, off
, limit
;
11631 if (!htab
->second_toc_pass
)
11633 /* Keep track of the first .toc or .got section for this input bfd. */
11634 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11638 htab
->toc_bfd
= isec
->owner
;
11639 htab
->toc_first_sec
= isec
;
11642 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11643 off
= addr
- htab
->toc_curr
;
11644 limit
= 0x80008000;
11645 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11647 if (off
+ isec
->size
> limit
)
11649 addr
= (htab
->toc_first_sec
->output_offset
11650 + htab
->toc_first_sec
->output_section
->vma
);
11651 htab
->toc_curr
= addr
;
11652 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11655 /* toc_curr is the base address of this toc group. Set elf_gp
11656 for the input section to be the offset relative to the
11657 output toc base plus 0x8000. Making the input elf_gp an
11658 offset allows us to move the toc as a whole without
11659 recalculating input elf_gp. */
11660 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11661 off
+= TOC_BASE_OFF
;
11663 /* Die if someone uses a linker script that doesn't keep input
11664 file .toc and .got together. */
11666 && elf_gp (isec
->owner
) != 0
11667 && elf_gp (isec
->owner
) != off
)
11670 elf_gp (isec
->owner
) = off
;
11674 /* During the second pass toc_first_sec points to the start of
11675 a toc group, and toc_curr is used to track the old elf_gp.
11676 We use toc_bfd to ensure we only look at each bfd once. */
11677 if (htab
->toc_bfd
== isec
->owner
)
11679 htab
->toc_bfd
= isec
->owner
;
11681 if (htab
->toc_first_sec
== NULL
11682 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11684 htab
->toc_curr
= elf_gp (isec
->owner
);
11685 htab
->toc_first_sec
= isec
;
11687 addr
= (htab
->toc_first_sec
->output_offset
11688 + htab
->toc_first_sec
->output_section
->vma
);
11689 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11690 elf_gp (isec
->owner
) = off
;
11695 /* Called via elf_link_hash_traverse to merge GOT entries for global
11699 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11701 if (h
->root
.type
== bfd_link_hash_indirect
)
11704 merge_got_entries (&h
->got
.glist
);
11709 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11713 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11715 struct got_entry
*gent
;
11717 if (h
->root
.type
== bfd_link_hash_indirect
)
11720 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11721 if (!gent
->is_indirect
)
11722 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11726 /* Called on the first multitoc pass after the last call to
11727 ppc64_elf_next_toc_section. This function removes duplicate GOT
11731 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11733 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11734 struct bfd
*ibfd
, *ibfd2
;
11735 bfd_boolean done_something
;
11737 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11739 if (!htab
->do_multi_toc
)
11742 /* Merge global sym got entries within a toc group. */
11743 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11745 /* And tlsld_got. */
11746 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11748 struct got_entry
*ent
, *ent2
;
11750 if (!is_ppc64_elf (ibfd
))
11753 ent
= ppc64_tlsld_got (ibfd
);
11754 if (!ent
->is_indirect
11755 && ent
->got
.offset
!= (bfd_vma
) -1)
11757 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11759 if (!is_ppc64_elf (ibfd2
))
11762 ent2
= ppc64_tlsld_got (ibfd2
);
11763 if (!ent2
->is_indirect
11764 && ent2
->got
.offset
!= (bfd_vma
) -1
11765 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11767 ent2
->is_indirect
= TRUE
;
11768 ent2
->got
.ent
= ent
;
11774 /* Zap sizes of got sections. */
11775 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11776 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11777 htab
->got_reli_size
= 0;
11779 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11781 asection
*got
, *relgot
;
11783 if (!is_ppc64_elf (ibfd
))
11786 got
= ppc64_elf_tdata (ibfd
)->got
;
11789 got
->rawsize
= got
->size
;
11791 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11792 relgot
->rawsize
= relgot
->size
;
11797 /* Now reallocate the got, local syms first. We don't need to
11798 allocate section contents again since we never increase size. */
11799 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11801 struct got_entry
**lgot_ents
;
11802 struct got_entry
**end_lgot_ents
;
11803 struct plt_entry
**local_plt
;
11804 struct plt_entry
**end_local_plt
;
11805 unsigned char *lgot_masks
;
11806 bfd_size_type locsymcount
;
11807 Elf_Internal_Shdr
*symtab_hdr
;
11810 if (!is_ppc64_elf (ibfd
))
11813 lgot_ents
= elf_local_got_ents (ibfd
);
11817 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11818 locsymcount
= symtab_hdr
->sh_info
;
11819 end_lgot_ents
= lgot_ents
+ locsymcount
;
11820 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11821 end_local_plt
= local_plt
+ locsymcount
;
11822 lgot_masks
= (unsigned char *) end_local_plt
;
11823 s
= ppc64_elf_tdata (ibfd
)->got
;
11824 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11826 struct got_entry
*ent
;
11828 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11830 unsigned int ent_size
= 8;
11831 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11833 ent
->got
.offset
= s
->size
;
11834 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11839 s
->size
+= ent_size
;
11840 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11842 htab
->elf
.irelplt
->size
+= rel_size
;
11843 htab
->got_reli_size
+= rel_size
;
11845 else if (bfd_link_pic (info
))
11847 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11848 srel
->size
+= rel_size
;
11854 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11856 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11858 struct got_entry
*ent
;
11860 if (!is_ppc64_elf (ibfd
))
11863 ent
= ppc64_tlsld_got (ibfd
);
11864 if (!ent
->is_indirect
11865 && ent
->got
.offset
!= (bfd_vma
) -1)
11867 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11868 ent
->got
.offset
= s
->size
;
11870 if (bfd_link_pic (info
))
11872 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11873 srel
->size
+= sizeof (Elf64_External_Rela
);
11878 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11879 if (!done_something
)
11880 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11884 if (!is_ppc64_elf (ibfd
))
11887 got
= ppc64_elf_tdata (ibfd
)->got
;
11890 done_something
= got
->rawsize
!= got
->size
;
11891 if (done_something
)
11896 if (done_something
)
11897 (*htab
->params
->layout_sections_again
) ();
11899 /* Set up for second pass over toc sections to recalculate elf_gp
11900 on input sections. */
11901 htab
->toc_bfd
= NULL
;
11902 htab
->toc_first_sec
= NULL
;
11903 htab
->second_toc_pass
= TRUE
;
11904 return done_something
;
11907 /* Called after second pass of multitoc partitioning. */
11910 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11912 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11914 /* After the second pass, toc_curr tracks the TOC offset used
11915 for code sections below in ppc64_elf_next_input_section. */
11916 htab
->toc_curr
= TOC_BASE_OFF
;
11919 /* No toc references were found in ISEC. If the code in ISEC makes no
11920 calls, then there's no need to use toc adjusting stubs when branching
11921 into ISEC. Actually, indirect calls from ISEC are OK as they will
11922 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11923 needed, and 2 if a cyclical call-graph was found but no other reason
11924 for a stub was detected. If called from the top level, a return of
11925 2 means the same as a return of 0. */
11928 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11932 /* Mark this section as checked. */
11933 isec
->call_check_done
= 1;
11935 /* We know none of our code bearing sections will need toc stubs. */
11936 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11939 if (isec
->size
== 0)
11942 if (isec
->output_section
== NULL
)
11946 if (isec
->reloc_count
!= 0)
11948 Elf_Internal_Rela
*relstart
, *rel
;
11949 Elf_Internal_Sym
*local_syms
;
11950 struct ppc_link_hash_table
*htab
;
11952 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11953 info
->keep_memory
);
11954 if (relstart
== NULL
)
11957 /* Look for branches to outside of this section. */
11959 htab
= ppc_hash_table (info
);
11963 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11965 enum elf_ppc64_reloc_type r_type
;
11966 unsigned long r_symndx
;
11967 struct elf_link_hash_entry
*h
;
11968 struct ppc_link_hash_entry
*eh
;
11969 Elf_Internal_Sym
*sym
;
11971 struct _opd_sec_data
*opd
;
11975 r_type
= ELF64_R_TYPE (rel
->r_info
);
11976 if (r_type
!= R_PPC64_REL24
11977 && r_type
!= R_PPC64_REL14
11978 && r_type
!= R_PPC64_REL14_BRTAKEN
11979 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11982 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11983 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11990 /* Calls to dynamic lib functions go through a plt call stub
11992 eh
= (struct ppc_link_hash_entry
*) h
;
11994 && (eh
->elf
.plt
.plist
!= NULL
11996 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
12002 if (sym_sec
== NULL
)
12003 /* Ignore other undefined symbols. */
12006 /* Assume branches to other sections not included in the
12007 link need stubs too, to cover -R and absolute syms. */
12008 if (sym_sec
->output_section
== NULL
)
12015 sym_value
= sym
->st_value
;
12018 if (h
->root
.type
!= bfd_link_hash_defined
12019 && h
->root
.type
!= bfd_link_hash_defweak
)
12021 sym_value
= h
->root
.u
.def
.value
;
12023 sym_value
+= rel
->r_addend
;
12025 /* If this branch reloc uses an opd sym, find the code section. */
12026 opd
= get_opd_info (sym_sec
);
12029 if (h
== NULL
&& opd
->adjust
!= NULL
)
12033 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12035 /* Assume deleted functions won't ever be called. */
12037 sym_value
+= adjust
;
12040 dest
= opd_entry_value (sym_sec
, sym_value
,
12041 &sym_sec
, NULL
, FALSE
);
12042 if (dest
== (bfd_vma
) -1)
12047 + sym_sec
->output_offset
12048 + sym_sec
->output_section
->vma
);
12050 /* Ignore branch to self. */
12051 if (sym_sec
== isec
)
12054 /* If the called function uses the toc, we need a stub. */
12055 if (sym_sec
->has_toc_reloc
12056 || sym_sec
->makes_toc_func_call
)
12062 /* Assume any branch that needs a long branch stub might in fact
12063 need a plt_branch stub. A plt_branch stub uses r2. */
12064 else if (dest
- (isec
->output_offset
12065 + isec
->output_section
->vma
12066 + rel
->r_offset
) + (1 << 25)
12067 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12075 /* If calling back to a section in the process of being
12076 tested, we can't say for sure that no toc adjusting stubs
12077 are needed, so don't return zero. */
12078 else if (sym_sec
->call_check_in_progress
)
12081 /* Branches to another section that itself doesn't have any TOC
12082 references are OK. Recursively call ourselves to check. */
12083 else if (!sym_sec
->call_check_done
)
12087 /* Mark current section as indeterminate, so that other
12088 sections that call back to current won't be marked as
12090 isec
->call_check_in_progress
= 1;
12091 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
12092 isec
->call_check_in_progress
= 0;
12103 if (local_syms
!= NULL
12104 && (elf_symtab_hdr (isec
->owner
).contents
12105 != (unsigned char *) local_syms
))
12107 if (elf_section_data (isec
)->relocs
!= relstart
)
12112 && isec
->map_head
.s
!= NULL
12113 && (strcmp (isec
->output_section
->name
, ".init") == 0
12114 || strcmp (isec
->output_section
->name
, ".fini") == 0))
12116 if (isec
->map_head
.s
->has_toc_reloc
12117 || isec
->map_head
.s
->makes_toc_func_call
)
12119 else if (!isec
->map_head
.s
->call_check_done
)
12122 isec
->call_check_in_progress
= 1;
12123 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
12124 isec
->call_check_in_progress
= 0;
12131 isec
->makes_toc_func_call
= 1;
12136 /* The linker repeatedly calls this function for each input section,
12137 in the order that input sections are linked into output sections.
12138 Build lists of input sections to determine groupings between which
12139 we may insert linker stubs. */
12142 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12144 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12149 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12150 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12152 /* This happens to make the list in reverse order,
12153 which is what we want. */
12154 htab
->sec_info
[isec
->id
].u
.list
12155 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12156 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12159 if (htab
->multi_toc_needed
)
12161 /* Analyse sections that aren't already flagged as needing a
12162 valid toc pointer. Exclude .fixup for the linux kernel.
12163 .fixup contains branches, but only back to the function that
12164 hit an exception. */
12165 if (!(isec
->has_toc_reloc
12166 || (isec
->flags
& SEC_CODE
) == 0
12167 || strcmp (isec
->name
, ".fixup") == 0
12168 || isec
->call_check_done
))
12170 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12173 /* Make all sections use the TOC assigned for this object file.
12174 This will be wrong for pasted sections; We fix that in
12175 check_pasted_section(). */
12176 if (elf_gp (isec
->owner
) != 0)
12177 htab
->toc_curr
= elf_gp (isec
->owner
);
12180 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12184 /* Check that all .init and .fini sections use the same toc, if they
12185 have toc relocs. */
12188 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12190 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12194 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12195 bfd_vma toc_off
= 0;
12198 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12199 if (i
->has_toc_reloc
)
12202 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12203 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12208 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12209 if (i
->makes_toc_func_call
)
12211 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12215 /* Make sure the whole pasted function uses the same toc offset. */
12217 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12218 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12224 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12226 return (check_pasted_section (info
, ".init")
12227 & check_pasted_section (info
, ".fini"));
12230 /* See whether we can group stub sections together. Grouping stub
12231 sections may result in fewer stubs. More importantly, we need to
12232 put all .init* and .fini* stubs at the beginning of the .init or
12233 .fini output sections respectively, because glibc splits the
12234 _init and _fini functions into multiple parts. Putting a stub in
12235 the middle of a function is not a good idea. */
12238 group_sections (struct bfd_link_info
*info
,
12239 bfd_size_type stub_group_size
,
12240 bfd_boolean stubs_always_before_branch
)
12242 struct ppc_link_hash_table
*htab
;
12244 bfd_boolean suppress_size_errors
;
12246 htab
= ppc_hash_table (info
);
12250 suppress_size_errors
= FALSE
;
12251 if (stub_group_size
== 1)
12253 /* Default values. */
12254 if (stubs_always_before_branch
)
12255 stub_group_size
= 0x1e00000;
12257 stub_group_size
= 0x1c00000;
12258 suppress_size_errors
= TRUE
;
12261 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12265 if (osec
->id
>= htab
->sec_info_arr_size
)
12268 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12269 while (tail
!= NULL
)
12273 bfd_size_type total
;
12274 bfd_boolean big_sec
;
12276 struct map_stub
*group
;
12277 bfd_size_type group_size
;
12280 total
= tail
->size
;
12281 group_size
= (ppc64_elf_section_data (tail
) != NULL
12282 && ppc64_elf_section_data (tail
)->has_14bit_branch
12283 ? stub_group_size
>> 10 : stub_group_size
);
12285 big_sec
= total
> group_size
;
12286 if (big_sec
&& !suppress_size_errors
)
12287 /* xgettext:c-format */
12288 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12289 tail
->owner
, tail
);
12290 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12292 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12293 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12294 < (ppc64_elf_section_data (prev
) != NULL
12295 && ppc64_elf_section_data (prev
)->has_14bit_branch
12296 ? (group_size
= stub_group_size
>> 10) : group_size
))
12297 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12300 /* OK, the size from the start of CURR to the end is less
12301 than group_size and thus can be handled by one stub
12302 section. (or the tail section is itself larger than
12303 group_size, in which case we may be toast.) We should
12304 really be keeping track of the total size of stubs added
12305 here, as stubs contribute to the final output section
12306 size. That's a little tricky, and this way will only
12307 break if stubs added make the total size more than 2^25,
12308 ie. for the default stub_group_size, if stubs total more
12309 than 2097152 bytes, or nearly 75000 plt call stubs. */
12310 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12313 group
->link_sec
= curr
;
12314 group
->stub_sec
= NULL
;
12315 group
->needs_save_res
= 0;
12316 group
->tls_get_addr_opt_bctrl
= -1u;
12317 group
->next
= htab
->group
;
12318 htab
->group
= group
;
12321 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12322 /* Set up this stub group. */
12323 htab
->sec_info
[tail
->id
].u
.group
= group
;
12325 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12327 /* But wait, there's more! Input sections up to group_size
12328 bytes before the stub section can be handled by it too.
12329 Don't do this if we have a really large section after the
12330 stubs, as adding more stubs increases the chance that
12331 branches may not reach into the stub section. */
12332 if (!stubs_always_before_branch
&& !big_sec
)
12335 while (prev
!= NULL
12336 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12337 < (ppc64_elf_section_data (prev
) != NULL
12338 && ppc64_elf_section_data (prev
)->has_14bit_branch
12339 ? (group_size
= stub_group_size
>> 10) : group_size
))
12340 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12343 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12344 htab
->sec_info
[tail
->id
].u
.group
= group
;
12353 static const unsigned char glink_eh_frame_cie
[] =
12355 0, 0, 0, 16, /* length. */
12356 0, 0, 0, 0, /* id. */
12357 1, /* CIE version. */
12358 'z', 'R', 0, /* Augmentation string. */
12359 4, /* Code alignment. */
12360 0x78, /* Data alignment. */
12362 1, /* Augmentation size. */
12363 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12364 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12368 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12370 size_t this_size
= 17;
12371 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12373 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12376 else if (to_bctrl
< 256)
12378 else if (to_bctrl
< 65536)
12384 this_size
= (this_size
+ align
- 1) & -align
;
12388 /* Stripping output sections is normally done before dynamic section
12389 symbols have been allocated. This function is called later, and
12390 handles cases like htab->brlt which is mapped to its own output
12394 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12396 if (isec
->size
== 0
12397 && isec
->output_section
->size
== 0
12398 && !(isec
->output_section
->flags
& SEC_KEEP
)
12399 && !bfd_section_removed_from_list (info
->output_bfd
,
12400 isec
->output_section
)
12401 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12403 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12404 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12405 info
->output_bfd
->section_count
--;
12409 /* Determine and set the size of the stub section for a final link.
12411 The basic idea here is to examine all the relocations looking for
12412 PC-relative calls to a target that is unreachable with a "bl"
12416 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12418 bfd_size_type stub_group_size
;
12419 bfd_boolean stubs_always_before_branch
;
12420 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12425 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12426 htab
->params
->plt_thread_safe
= 1;
12427 if (!htab
->opd_abi
)
12428 htab
->params
->plt_thread_safe
= 0;
12429 else if (htab
->params
->plt_thread_safe
== -1)
12431 static const char *const thread_starter
[] =
12435 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12437 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12438 "mq_notify", "create_timer",
12443 "GOMP_parallel_start",
12444 "GOMP_parallel_loop_static",
12445 "GOMP_parallel_loop_static_start",
12446 "GOMP_parallel_loop_dynamic",
12447 "GOMP_parallel_loop_dynamic_start",
12448 "GOMP_parallel_loop_guided",
12449 "GOMP_parallel_loop_guided_start",
12450 "GOMP_parallel_loop_runtime",
12451 "GOMP_parallel_loop_runtime_start",
12452 "GOMP_parallel_sections",
12453 "GOMP_parallel_sections_start",
12459 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12461 struct elf_link_hash_entry
*h
;
12462 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12463 FALSE
, FALSE
, TRUE
);
12464 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12465 if (htab
->params
->plt_thread_safe
)
12469 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12470 if (htab
->params
->group_size
< 0)
12471 stub_group_size
= -htab
->params
->group_size
;
12473 stub_group_size
= htab
->params
->group_size
;
12475 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12478 #define STUB_SHRINK_ITER 20
12479 /* Loop until no stubs added. After iteration 20 of this loop we may
12480 exit on a stub section shrinking. This is to break out of a
12481 pathological case where adding stubs on one iteration decreases
12482 section gaps (perhaps due to alignment), which then requires
12483 fewer or smaller stubs on the next iteration. */
12488 unsigned int bfd_indx
;
12489 struct map_stub
*group
;
12491 htab
->stub_iteration
+= 1;
12493 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12495 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12497 Elf_Internal_Shdr
*symtab_hdr
;
12499 Elf_Internal_Sym
*local_syms
= NULL
;
12501 if (!is_ppc64_elf (input_bfd
))
12504 /* We'll need the symbol table in a second. */
12505 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12506 if (symtab_hdr
->sh_info
== 0)
12509 /* Walk over each section attached to the input bfd. */
12510 for (section
= input_bfd
->sections
;
12512 section
= section
->next
)
12514 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12516 /* If there aren't any relocs, then there's nothing more
12518 if ((section
->flags
& SEC_RELOC
) == 0
12519 || (section
->flags
& SEC_ALLOC
) == 0
12520 || (section
->flags
& SEC_LOAD
) == 0
12521 || (section
->flags
& SEC_CODE
) == 0
12522 || section
->reloc_count
== 0)
12525 /* If this section is a link-once section that will be
12526 discarded, then don't create any stubs. */
12527 if (section
->output_section
== NULL
12528 || section
->output_section
->owner
!= info
->output_bfd
)
12531 /* Get the relocs. */
12533 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12534 info
->keep_memory
);
12535 if (internal_relocs
== NULL
)
12536 goto error_ret_free_local
;
12538 /* Now examine each relocation. */
12539 irela
= internal_relocs
;
12540 irelaend
= irela
+ section
->reloc_count
;
12541 for (; irela
< irelaend
; irela
++)
12543 enum elf_ppc64_reloc_type r_type
;
12544 unsigned int r_indx
;
12545 enum ppc_stub_type stub_type
;
12546 struct ppc_stub_hash_entry
*stub_entry
;
12547 asection
*sym_sec
, *code_sec
;
12548 bfd_vma sym_value
, code_value
;
12549 bfd_vma destination
;
12550 unsigned long local_off
;
12551 bfd_boolean ok_dest
;
12552 struct ppc_link_hash_entry
*hash
;
12553 struct ppc_link_hash_entry
*fdh
;
12554 struct elf_link_hash_entry
*h
;
12555 Elf_Internal_Sym
*sym
;
12557 const asection
*id_sec
;
12558 struct _opd_sec_data
*opd
;
12559 struct plt_entry
*plt_ent
;
12561 r_type
= ELF64_R_TYPE (irela
->r_info
);
12562 r_indx
= ELF64_R_SYM (irela
->r_info
);
12564 if (r_type
>= R_PPC64_max
)
12566 bfd_set_error (bfd_error_bad_value
);
12567 goto error_ret_free_internal
;
12570 /* Only look for stubs on branch instructions. */
12571 if (r_type
!= R_PPC64_REL24
12572 && r_type
!= R_PPC64_REL14
12573 && r_type
!= R_PPC64_REL14_BRTAKEN
12574 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12577 /* Now determine the call target, its name, value,
12579 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12580 r_indx
, input_bfd
))
12581 goto error_ret_free_internal
;
12582 hash
= (struct ppc_link_hash_entry
*) h
;
12589 sym_value
= sym
->st_value
;
12590 if (sym_sec
!= NULL
12591 && sym_sec
->output_section
!= NULL
)
12594 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12595 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12597 sym_value
= hash
->elf
.root
.u
.def
.value
;
12598 if (sym_sec
->output_section
!= NULL
)
12601 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12602 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12604 /* Recognise an old ABI func code entry sym, and
12605 use the func descriptor sym instead if it is
12607 if (hash
->elf
.root
.root
.string
[0] == '.'
12608 && hash
->oh
!= NULL
)
12610 fdh
= ppc_follow_link (hash
->oh
);
12611 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12612 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12614 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12615 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12616 if (sym_sec
->output_section
!= NULL
)
12625 bfd_set_error (bfd_error_bad_value
);
12626 goto error_ret_free_internal
;
12633 sym_value
+= irela
->r_addend
;
12634 destination
= (sym_value
12635 + sym_sec
->output_offset
12636 + sym_sec
->output_section
->vma
);
12637 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12642 code_sec
= sym_sec
;
12643 code_value
= sym_value
;
12644 opd
= get_opd_info (sym_sec
);
12649 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12651 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12654 code_value
+= adjust
;
12655 sym_value
+= adjust
;
12657 dest
= opd_entry_value (sym_sec
, sym_value
,
12658 &code_sec
, &code_value
, FALSE
);
12659 if (dest
!= (bfd_vma
) -1)
12661 destination
= dest
;
12664 /* Fixup old ABI sym to point at code
12666 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12667 hash
->elf
.root
.u
.def
.section
= code_sec
;
12668 hash
->elf
.root
.u
.def
.value
= code_value
;
12673 /* Determine what (if any) linker stub is needed. */
12675 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12676 &plt_ent
, destination
,
12679 if (stub_type
!= ppc_stub_plt_call
)
12681 /* Check whether we need a TOC adjusting stub.
12682 Since the linker pastes together pieces from
12683 different object files when creating the
12684 _init and _fini functions, it may be that a
12685 call to what looks like a local sym is in
12686 fact a call needing a TOC adjustment. */
12687 if (code_sec
!= NULL
12688 && code_sec
->output_section
!= NULL
12689 && (htab
->sec_info
[code_sec
->id
].toc_off
12690 != htab
->sec_info
[section
->id
].toc_off
)
12691 && (code_sec
->has_toc_reloc
12692 || code_sec
->makes_toc_func_call
))
12693 stub_type
= ppc_stub_long_branch_r2off
;
12696 if (stub_type
== ppc_stub_none
)
12699 /* __tls_get_addr calls might be eliminated. */
12700 if (stub_type
!= ppc_stub_plt_call
12702 && (hash
== htab
->tls_get_addr
12703 || hash
== htab
->tls_get_addr_fd
)
12704 && section
->has_tls_reloc
12705 && irela
!= internal_relocs
)
12707 /* Get tls info. */
12708 unsigned char *tls_mask
;
12710 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12711 irela
- 1, input_bfd
))
12712 goto error_ret_free_internal
;
12713 if (*tls_mask
!= 0)
12717 if (stub_type
== ppc_stub_plt_call
)
12720 && htab
->params
->plt_localentry0
!= 0
12721 && is_elfv2_localentry0 (&hash
->elf
))
12722 htab
->has_plt_localentry0
= 1;
12723 else if (irela
+ 1 < irelaend
12724 && irela
[1].r_offset
== irela
->r_offset
+ 4
12725 && (ELF64_R_TYPE (irela
[1].r_info
)
12726 == R_PPC64_TOCSAVE
))
12728 if (!tocsave_find (htab
, INSERT
,
12729 &local_syms
, irela
+ 1, input_bfd
))
12730 goto error_ret_free_internal
;
12733 stub_type
= ppc_stub_plt_call_r2save
;
12736 /* Support for grouping stub sections. */
12737 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12739 /* Get the name of this stub. */
12740 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12742 goto error_ret_free_internal
;
12744 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12745 stub_name
, FALSE
, FALSE
);
12746 if (stub_entry
!= NULL
)
12748 /* The proper stub has already been created. */
12750 if (stub_type
== ppc_stub_plt_call_r2save
)
12751 stub_entry
->stub_type
= stub_type
;
12755 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12756 if (stub_entry
== NULL
)
12759 error_ret_free_internal
:
12760 if (elf_section_data (section
)->relocs
== NULL
)
12761 free (internal_relocs
);
12762 error_ret_free_local
:
12763 if (local_syms
!= NULL
12764 && (symtab_hdr
->contents
12765 != (unsigned char *) local_syms
))
12770 stub_entry
->stub_type
= stub_type
;
12771 if (stub_type
!= ppc_stub_plt_call
12772 && stub_type
!= ppc_stub_plt_call_r2save
)
12774 stub_entry
->target_value
= code_value
;
12775 stub_entry
->target_section
= code_sec
;
12779 stub_entry
->target_value
= sym_value
;
12780 stub_entry
->target_section
= sym_sec
;
12782 stub_entry
->h
= hash
;
12783 stub_entry
->plt_ent
= plt_ent
;
12784 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12786 if (stub_entry
->h
!= NULL
)
12787 htab
->stub_globals
+= 1;
12790 /* We're done with the internal relocs, free them. */
12791 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12792 free (internal_relocs
);
12795 if (local_syms
!= NULL
12796 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12798 if (!info
->keep_memory
)
12801 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12805 /* We may have added some stubs. Find out the new size of the
12807 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12808 if (group
->stub_sec
!= NULL
)
12810 asection
*stub_sec
= group
->stub_sec
;
12812 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12813 || stub_sec
->rawsize
< stub_sec
->size
)
12814 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12815 stub_sec
->rawsize
= stub_sec
->size
;
12816 stub_sec
->size
= 0;
12817 stub_sec
->reloc_count
= 0;
12818 stub_sec
->flags
&= ~SEC_RELOC
;
12821 htab
->brlt
->size
= 0;
12822 htab
->brlt
->reloc_count
= 0;
12823 htab
->brlt
->flags
&= ~SEC_RELOC
;
12824 if (htab
->relbrlt
!= NULL
)
12825 htab
->relbrlt
->size
= 0;
12827 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12829 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12830 if (group
->needs_save_res
)
12831 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12833 if (info
->emitrelocations
12834 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12836 htab
->glink
->reloc_count
= 1;
12837 htab
->glink
->flags
|= SEC_RELOC
;
12840 if (htab
->glink_eh_frame
!= NULL
12841 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12842 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12844 size_t size
= 0, align
= 4;
12846 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12847 if (group
->stub_sec
!= NULL
)
12848 size
+= stub_eh_frame_size (group
, align
);
12849 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12850 size
+= (24 + align
- 1) & -align
;
12852 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12853 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12854 size
= (size
+ align
- 1) & -align
;
12855 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12856 htab
->glink_eh_frame
->size
= size
;
12859 if (htab
->params
->plt_stub_align
!= 0)
12860 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12861 if (group
->stub_sec
!= NULL
)
12862 group
->stub_sec
->size
= ((group
->stub_sec
->size
12863 + (1 << htab
->params
->plt_stub_align
) - 1)
12864 & -(1 << htab
->params
->plt_stub_align
));
12866 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12867 if (group
->stub_sec
!= NULL
12868 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12869 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12870 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12874 && (htab
->glink_eh_frame
== NULL
12875 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12878 /* Ask the linker to do its stuff. */
12879 (*htab
->params
->layout_sections_again
) ();
12882 if (htab
->glink_eh_frame
!= NULL
12883 && htab
->glink_eh_frame
->size
!= 0)
12886 bfd_byte
*p
, *last_fde
;
12887 size_t last_fde_len
, size
, align
, pad
;
12888 struct map_stub
*group
;
12890 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12893 htab
->glink_eh_frame
->contents
= p
;
12897 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12898 /* CIE length (rewrite in case little-endian). */
12899 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12900 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12901 p
+= last_fde_len
+ 4;
12903 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12904 if (group
->stub_sec
!= NULL
)
12907 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12909 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12912 val
= p
- htab
->glink_eh_frame
->contents
;
12913 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12915 /* Offset to stub section, written later. */
12917 /* stub section size. */
12918 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12920 /* Augmentation. */
12922 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12924 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12926 /* This FDE needs more than just the default.
12927 Describe __tls_get_addr_opt stub LR. */
12929 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12930 else if (to_bctrl
< 256)
12932 *p
++ = DW_CFA_advance_loc1
;
12935 else if (to_bctrl
< 65536)
12937 *p
++ = DW_CFA_advance_loc2
;
12938 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12943 *p
++ = DW_CFA_advance_loc4
;
12944 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12947 *p
++ = DW_CFA_offset_extended_sf
;
12949 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12950 *p
++ = DW_CFA_advance_loc
+ 4;
12951 *p
++ = DW_CFA_restore_extended
;
12955 p
= last_fde
+ last_fde_len
+ 4;
12957 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12960 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12962 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12965 val
= p
- htab
->glink_eh_frame
->contents
;
12966 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12968 /* Offset to .glink, written later. */
12971 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12973 /* Augmentation. */
12976 *p
++ = DW_CFA_advance_loc
+ 1;
12977 *p
++ = DW_CFA_register
;
12979 *p
++ = htab
->opd_abi
? 12 : 0;
12980 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12981 *p
++ = DW_CFA_restore_extended
;
12983 p
+= ((24 + align
- 1) & -align
) - 24;
12985 /* Subsume any padding into the last FDE if user .eh_frame
12986 sections are aligned more than glink_eh_frame. Otherwise any
12987 zero padding will be seen as a terminator. */
12988 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12989 size
= p
- htab
->glink_eh_frame
->contents
;
12990 pad
= ((size
+ align
- 1) & -align
) - size
;
12991 htab
->glink_eh_frame
->size
= size
+ pad
;
12992 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12995 maybe_strip_output (info
, htab
->brlt
);
12996 if (htab
->glink_eh_frame
!= NULL
)
12997 maybe_strip_output (info
, htab
->glink_eh_frame
);
13002 /* Called after we have determined section placement. If sections
13003 move, we'll be called again. Provide a value for TOCstart. */
13006 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
13009 bfd_vma TOCstart
, adjust
;
13013 struct elf_link_hash_entry
*h
;
13014 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
13016 if (is_elf_hash_table (htab
)
13017 && htab
->hgot
!= NULL
)
13021 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
13022 if (is_elf_hash_table (htab
))
13026 && h
->root
.type
== bfd_link_hash_defined
13027 && !h
->root
.linker_def
13028 && (!is_elf_hash_table (htab
)
13029 || h
->def_regular
))
13031 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
13032 + h
->root
.u
.def
.section
->output_offset
13033 + h
->root
.u
.def
.section
->output_section
->vma
);
13034 _bfd_set_gp_value (obfd
, TOCstart
);
13039 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13040 order. The TOC starts where the first of these sections starts. */
13041 s
= bfd_get_section_by_name (obfd
, ".got");
13042 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13043 s
= bfd_get_section_by_name (obfd
, ".toc");
13044 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13045 s
= bfd_get_section_by_name (obfd
, ".tocbss");
13046 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13047 s
= bfd_get_section_by_name (obfd
, ".plt");
13048 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13050 /* This may happen for
13051 o references to TOC base (SYM@toc / TOC[tc0]) without a
13053 o bad linker script
13054 o --gc-sections and empty TOC sections
13056 FIXME: Warn user? */
13058 /* Look for a likely section. We probably won't even be
13060 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13061 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
13063 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13066 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13067 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
13068 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13071 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13072 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
13076 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13077 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
13083 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
13085 /* Force alignment. */
13086 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
13087 TOCstart
-= adjust
;
13088 _bfd_set_gp_value (obfd
, TOCstart
);
13090 if (info
!= NULL
&& s
!= NULL
)
13092 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13096 if (htab
->elf
.hgot
!= NULL
)
13098 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
13099 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
13104 struct bfd_link_hash_entry
*bh
= NULL
;
13105 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
13106 s
, TOC_BASE_OFF
- adjust
,
13107 NULL
, FALSE
, FALSE
, &bh
);
13113 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13114 write out any global entry stubs. */
13117 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
13119 struct bfd_link_info
*info
;
13120 struct ppc_link_hash_table
*htab
;
13121 struct plt_entry
*pent
;
13124 if (h
->root
.type
== bfd_link_hash_indirect
)
13127 if (!h
->pointer_equality_needed
)
13130 if (h
->def_regular
)
13134 htab
= ppc_hash_table (info
);
13139 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13140 if (pent
->plt
.offset
!= (bfd_vma
) -1
13141 && pent
->addend
== 0)
13147 p
= s
->contents
+ h
->root
.u
.def
.value
;
13148 plt
= htab
->elf
.splt
;
13149 if (!htab
->elf
.dynamic_sections_created
13150 || h
->dynindx
== -1)
13151 plt
= htab
->elf
.iplt
;
13152 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13153 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13155 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13157 info
->callbacks
->einfo
13158 (_("%P: linkage table error against `%T'\n"),
13159 h
->root
.root
.string
);
13160 bfd_set_error (bfd_error_bad_value
);
13161 htab
->stub_error
= TRUE
;
13164 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13165 if (htab
->params
->emit_stub_syms
)
13167 size_t len
= strlen (h
->root
.root
.string
);
13168 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13173 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13174 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13177 if (h
->root
.type
== bfd_link_hash_new
)
13179 h
->root
.type
= bfd_link_hash_defined
;
13180 h
->root
.u
.def
.section
= s
;
13181 h
->root
.u
.def
.value
= p
- s
->contents
;
13182 h
->ref_regular
= 1;
13183 h
->def_regular
= 1;
13184 h
->ref_regular_nonweak
= 1;
13185 h
->forced_local
= 1;
13187 h
->root
.linker_def
= 1;
13191 if (PPC_HA (off
) != 0)
13193 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13196 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13198 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13200 bfd_put_32 (s
->owner
, BCTR
, p
);
13206 /* Build all the stubs associated with the current output file.
13207 The stubs are kept in a hash table attached to the main linker
13208 hash table. This function is called via gldelf64ppc_finish. */
13211 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13214 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13215 struct map_stub
*group
;
13216 asection
*stub_sec
;
13218 int stub_sec_count
= 0;
13223 /* Allocate memory to hold the linker stubs. */
13224 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13225 if ((stub_sec
= group
->stub_sec
) != NULL
13226 && stub_sec
->size
!= 0)
13228 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13229 if (stub_sec
->contents
== NULL
)
13231 stub_sec
->size
= 0;
13234 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13239 /* Build the .glink plt call stub. */
13240 if (htab
->params
->emit_stub_syms
)
13242 struct elf_link_hash_entry
*h
;
13243 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13244 TRUE
, FALSE
, FALSE
);
13247 if (h
->root
.type
== bfd_link_hash_new
)
13249 h
->root
.type
= bfd_link_hash_defined
;
13250 h
->root
.u
.def
.section
= htab
->glink
;
13251 h
->root
.u
.def
.value
= 8;
13252 h
->ref_regular
= 1;
13253 h
->def_regular
= 1;
13254 h
->ref_regular_nonweak
= 1;
13255 h
->forced_local
= 1;
13257 h
->root
.linker_def
= 1;
13260 plt0
= (htab
->elf
.splt
->output_section
->vma
13261 + htab
->elf
.splt
->output_offset
13263 if (info
->emitrelocations
)
13265 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13268 r
->r_offset
= (htab
->glink
->output_offset
13269 + htab
->glink
->output_section
->vma
);
13270 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13271 r
->r_addend
= plt0
;
13273 p
= htab
->glink
->contents
;
13274 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13275 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13279 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13281 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13283 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13285 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13287 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13289 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13291 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13293 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13295 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13297 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13302 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13304 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13306 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13308 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13310 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13312 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13314 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13316 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13318 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13320 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13322 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13324 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13326 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13329 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13331 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13333 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13337 /* Build the .glink lazy link call stubs. */
13339 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13345 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13350 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13352 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13357 bfd_put_32 (htab
->glink
->owner
,
13358 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13363 /* Build .glink global entry stubs. */
13364 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13365 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13368 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13370 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13372 if (htab
->brlt
->contents
== NULL
)
13375 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13377 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13378 htab
->relbrlt
->size
);
13379 if (htab
->relbrlt
->contents
== NULL
)
13383 /* Build the stubs as directed by the stub hash table. */
13384 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13386 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13387 if (group
->needs_save_res
)
13389 stub_sec
= group
->stub_sec
;
13390 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13392 if (htab
->params
->emit_stub_syms
)
13396 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13397 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13400 stub_sec
->size
+= htab
->sfpr
->size
;
13403 if (htab
->relbrlt
!= NULL
)
13404 htab
->relbrlt
->reloc_count
= 0;
13406 if (htab
->params
->plt_stub_align
!= 0)
13407 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13408 if ((stub_sec
= group
->stub_sec
) != NULL
)
13409 stub_sec
->size
= ((stub_sec
->size
13410 + (1 << htab
->params
->plt_stub_align
) - 1)
13411 & -(1 << htab
->params
->plt_stub_align
));
13413 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13414 if ((stub_sec
= group
->stub_sec
) != NULL
)
13416 stub_sec_count
+= 1;
13417 if (stub_sec
->rawsize
!= stub_sec
->size
13418 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13419 || stub_sec
->rawsize
< stub_sec
->size
))
13425 htab
->stub_error
= TRUE
;
13426 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13429 if (htab
->stub_error
)
13434 *stats
= bfd_malloc (500);
13435 if (*stats
== NULL
)
13438 sprintf (*stats
, _("linker stubs in %u group%s\n"
13440 " toc adjust %lu\n"
13441 " long branch %lu\n"
13442 " long toc adj %lu\n"
13444 " plt call toc %lu\n"
13445 " global entry %lu"),
13447 stub_sec_count
== 1 ? "" : "s",
13448 htab
->stub_count
[ppc_stub_long_branch
- 1],
13449 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13450 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13451 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13452 htab
->stub_count
[ppc_stub_plt_call
- 1],
13453 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13454 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13459 /* What to do when ld finds relocations against symbols defined in
13460 discarded sections. */
13462 static unsigned int
13463 ppc64_elf_action_discarded (asection
*sec
)
13465 if (strcmp (".opd", sec
->name
) == 0)
13468 if (strcmp (".toc", sec
->name
) == 0)
13471 if (strcmp (".toc1", sec
->name
) == 0)
13474 return _bfd_elf_default_action_discarded (sec
);
13477 /* The RELOCATE_SECTION function is called by the ELF backend linker
13478 to handle the relocations for a section.
13480 The relocs are always passed as Rela structures; if the section
13481 actually uses Rel structures, the r_addend field will always be
13484 This function is responsible for adjust the section contents as
13485 necessary, and (if using Rela relocs and generating a
13486 relocatable output file) adjusting the reloc addend as
13489 This function does not have to worry about setting the reloc
13490 address or the reloc symbol index.
13492 LOCAL_SYMS is a pointer to the swapped in local symbols.
13494 LOCAL_SECTIONS is an array giving the section in the input file
13495 corresponding to the st_shndx field of each local symbol.
13497 The global hash table entry for the global symbols can be found
13498 via elf_sym_hashes (input_bfd).
13500 When generating relocatable output, this function must handle
13501 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13502 going to be the section symbol corresponding to the output
13503 section, which means that the addend must be adjusted
13507 ppc64_elf_relocate_section (bfd
*output_bfd
,
13508 struct bfd_link_info
*info
,
13510 asection
*input_section
,
13511 bfd_byte
*contents
,
13512 Elf_Internal_Rela
*relocs
,
13513 Elf_Internal_Sym
*local_syms
,
13514 asection
**local_sections
)
13516 struct ppc_link_hash_table
*htab
;
13517 Elf_Internal_Shdr
*symtab_hdr
;
13518 struct elf_link_hash_entry
**sym_hashes
;
13519 Elf_Internal_Rela
*rel
;
13520 Elf_Internal_Rela
*wrel
;
13521 Elf_Internal_Rela
*relend
;
13522 Elf_Internal_Rela outrel
;
13524 struct got_entry
**local_got_ents
;
13526 bfd_boolean ret
= TRUE
;
13527 bfd_boolean is_opd
;
13528 /* Assume 'at' branch hints. */
13529 bfd_boolean is_isa_v2
= TRUE
;
13530 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13532 /* Initialize howto table if needed. */
13533 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13536 htab
= ppc_hash_table (info
);
13540 /* Don't relocate stub sections. */
13541 if (input_section
->owner
== htab
->params
->stub_bfd
)
13544 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13546 local_got_ents
= elf_local_got_ents (input_bfd
);
13547 TOCstart
= elf_gp (output_bfd
);
13548 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13549 sym_hashes
= elf_sym_hashes (input_bfd
);
13550 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13552 rel
= wrel
= relocs
;
13553 relend
= relocs
+ input_section
->reloc_count
;
13554 for (; rel
< relend
; wrel
++, rel
++)
13556 enum elf_ppc64_reloc_type r_type
;
13558 bfd_reloc_status_type r
;
13559 Elf_Internal_Sym
*sym
;
13561 struct elf_link_hash_entry
*h_elf
;
13562 struct ppc_link_hash_entry
*h
;
13563 struct ppc_link_hash_entry
*fdh
;
13564 const char *sym_name
;
13565 unsigned long r_symndx
, toc_symndx
;
13566 bfd_vma toc_addend
;
13567 unsigned char tls_mask
, tls_gd
, tls_type
;
13568 unsigned char sym_type
;
13569 bfd_vma relocation
;
13570 bfd_boolean unresolved_reloc
;
13571 bfd_boolean warned
;
13572 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13575 struct ppc_stub_hash_entry
*stub_entry
;
13576 bfd_vma max_br_offset
;
13578 Elf_Internal_Rela orig_rel
;
13579 reloc_howto_type
*howto
;
13580 struct reloc_howto_struct alt_howto
;
13585 r_type
= ELF64_R_TYPE (rel
->r_info
);
13586 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13588 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13589 symbol of the previous ADDR64 reloc. The symbol gives us the
13590 proper TOC base to use. */
13591 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13593 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13595 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13601 unresolved_reloc
= FALSE
;
13604 if (r_symndx
< symtab_hdr
->sh_info
)
13606 /* It's a local symbol. */
13607 struct _opd_sec_data
*opd
;
13609 sym
= local_syms
+ r_symndx
;
13610 sec
= local_sections
[r_symndx
];
13611 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13612 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13613 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13614 opd
= get_opd_info (sec
);
13615 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13617 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13623 /* If this is a relocation against the opd section sym
13624 and we have edited .opd, adjust the reloc addend so
13625 that ld -r and ld --emit-relocs output is correct.
13626 If it is a reloc against some other .opd symbol,
13627 then the symbol value will be adjusted later. */
13628 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13629 rel
->r_addend
+= adjust
;
13631 relocation
+= adjust
;
13637 bfd_boolean ignored
;
13639 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13640 r_symndx
, symtab_hdr
, sym_hashes
,
13641 h_elf
, sec
, relocation
,
13642 unresolved_reloc
, warned
, ignored
);
13643 sym_name
= h_elf
->root
.root
.string
;
13644 sym_type
= h_elf
->type
;
13646 && sec
->owner
== output_bfd
13647 && strcmp (sec
->name
, ".opd") == 0)
13649 /* This is a symbol defined in a linker script. All
13650 such are defined in output sections, even those
13651 defined by simple assignment from a symbol defined in
13652 an input section. Transfer the symbol to an
13653 appropriate input .opd section, so that a branch to
13654 this symbol will be mapped to the location specified
13655 by the opd entry. */
13656 struct bfd_link_order
*lo
;
13657 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13658 if (lo
->type
== bfd_indirect_link_order
)
13660 asection
*isec
= lo
->u
.indirect
.section
;
13661 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13662 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13665 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13666 h_elf
->root
.u
.def
.section
= isec
;
13673 h
= (struct ppc_link_hash_entry
*) h_elf
;
13675 if (sec
!= NULL
&& discarded_section (sec
))
13677 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13678 input_bfd
, input_section
,
13679 contents
+ rel
->r_offset
);
13680 wrel
->r_offset
= rel
->r_offset
;
13682 wrel
->r_addend
= 0;
13684 /* For ld -r, remove relocations in debug sections against
13685 symbols defined in discarded sections. Not done for
13686 non-debug to preserve relocs in .eh_frame which the
13687 eh_frame editing code expects to be present. */
13688 if (bfd_link_relocatable (info
)
13689 && (input_section
->flags
& SEC_DEBUGGING
))
13695 if (bfd_link_relocatable (info
))
13698 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13700 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13701 sec
= bfd_abs_section_ptr
;
13702 unresolved_reloc
= FALSE
;
13705 /* TLS optimizations. Replace instruction sequences and relocs
13706 based on information we collected in tls_optimize. We edit
13707 RELOCS so that --emit-relocs will output something sensible
13708 for the final instruction stream. */
13713 tls_mask
= h
->tls_mask
;
13714 else if (local_got_ents
!= NULL
)
13716 struct plt_entry
**local_plt
= (struct plt_entry
**)
13717 (local_got_ents
+ symtab_hdr
->sh_info
);
13718 unsigned char *lgot_masks
= (unsigned char *)
13719 (local_plt
+ symtab_hdr
->sh_info
);
13720 tls_mask
= lgot_masks
[r_symndx
];
13723 && (r_type
== R_PPC64_TLS
13724 || r_type
== R_PPC64_TLSGD
13725 || r_type
== R_PPC64_TLSLD
))
13727 /* Check for toc tls entries. */
13728 unsigned char *toc_tls
;
13730 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13731 &local_syms
, rel
, input_bfd
))
13735 tls_mask
= *toc_tls
;
13738 /* Check that tls relocs are used with tls syms, and non-tls
13739 relocs are used with non-tls syms. */
13740 if (r_symndx
!= STN_UNDEF
13741 && r_type
!= R_PPC64_NONE
13743 || h
->elf
.root
.type
== bfd_link_hash_defined
13744 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13745 && (IS_PPC64_TLS_RELOC (r_type
)
13746 != (sym_type
== STT_TLS
13747 || (sym_type
== STT_SECTION
13748 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13751 && (r_type
== R_PPC64_TLS
13752 || r_type
== R_PPC64_TLSGD
13753 || r_type
== R_PPC64_TLSLD
))
13754 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13757 info
->callbacks
->einfo
13758 (!IS_PPC64_TLS_RELOC (r_type
)
13759 /* xgettext:c-format */
13760 ? _("%H: %s used with TLS symbol `%T'\n")
13761 /* xgettext:c-format */
13762 : _("%H: %s used with non-TLS symbol `%T'\n"),
13763 input_bfd
, input_section
, rel
->r_offset
,
13764 ppc64_elf_howto_table
[r_type
]->name
,
13768 /* Ensure reloc mapping code below stays sane. */
13769 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13770 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13771 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13772 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13773 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13774 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13775 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13776 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13777 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13778 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13786 case R_PPC64_LO_DS_OPT
:
13787 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13788 if ((insn
& (0x3f << 26)) != 58u << 26)
13790 insn
+= (14u << 26) - (58u << 26);
13791 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13792 r_type
= R_PPC64_TOC16_LO
;
13793 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13796 case R_PPC64_TOC16
:
13797 case R_PPC64_TOC16_LO
:
13798 case R_PPC64_TOC16_DS
:
13799 case R_PPC64_TOC16_LO_DS
:
13801 /* Check for toc tls entries. */
13802 unsigned char *toc_tls
;
13805 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13806 &local_syms
, rel
, input_bfd
);
13812 tls_mask
= *toc_tls
;
13813 if (r_type
== R_PPC64_TOC16_DS
13814 || r_type
== R_PPC64_TOC16_LO_DS
)
13817 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13822 /* If we found a GD reloc pair, then we might be
13823 doing a GD->IE transition. */
13826 tls_gd
= TLS_TPRELGD
;
13827 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13830 else if (retval
== 3)
13832 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13840 case R_PPC64_GOT_TPREL16_HI
:
13841 case R_PPC64_GOT_TPREL16_HA
:
13843 && (tls_mask
& TLS_TPREL
) == 0)
13845 rel
->r_offset
-= d_offset
;
13846 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13847 r_type
= R_PPC64_NONE
;
13848 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13852 case R_PPC64_GOT_TPREL16_DS
:
13853 case R_PPC64_GOT_TPREL16_LO_DS
:
13855 && (tls_mask
& TLS_TPREL
) == 0)
13858 insn
= bfd_get_32 (input_bfd
,
13859 contents
+ rel
->r_offset
- d_offset
);
13861 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13862 bfd_put_32 (input_bfd
, insn
,
13863 contents
+ rel
->r_offset
- d_offset
);
13864 r_type
= R_PPC64_TPREL16_HA
;
13865 if (toc_symndx
!= 0)
13867 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13868 rel
->r_addend
= toc_addend
;
13869 /* We changed the symbol. Start over in order to
13870 get h, sym, sec etc. right. */
13874 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13880 && (tls_mask
& TLS_TPREL
) == 0)
13882 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13883 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13886 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13887 /* Was PPC64_TLS which sits on insn boundary, now
13888 PPC64_TPREL16_LO which is at low-order half-word. */
13889 rel
->r_offset
+= d_offset
;
13890 r_type
= R_PPC64_TPREL16_LO
;
13891 if (toc_symndx
!= 0)
13893 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13894 rel
->r_addend
= toc_addend
;
13895 /* We changed the symbol. Start over in order to
13896 get h, sym, sec etc. right. */
13900 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13904 case R_PPC64_GOT_TLSGD16_HI
:
13905 case R_PPC64_GOT_TLSGD16_HA
:
13906 tls_gd
= TLS_TPRELGD
;
13907 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13911 case R_PPC64_GOT_TLSLD16_HI
:
13912 case R_PPC64_GOT_TLSLD16_HA
:
13913 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13916 if ((tls_mask
& tls_gd
) != 0)
13917 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13918 + R_PPC64_GOT_TPREL16_DS
);
13921 rel
->r_offset
-= d_offset
;
13922 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13923 r_type
= R_PPC64_NONE
;
13925 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13929 case R_PPC64_GOT_TLSGD16
:
13930 case R_PPC64_GOT_TLSGD16_LO
:
13931 tls_gd
= TLS_TPRELGD
;
13932 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13936 case R_PPC64_GOT_TLSLD16
:
13937 case R_PPC64_GOT_TLSLD16_LO
:
13938 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13940 unsigned int insn1
, insn2
;
13944 offset
= (bfd_vma
) -1;
13945 /* If not using the newer R_PPC64_TLSGD/LD to mark
13946 __tls_get_addr calls, we must trust that the call
13947 stays with its arg setup insns, ie. that the next
13948 reloc is the __tls_get_addr call associated with
13949 the current reloc. Edit both insns. */
13950 if (input_section
->has_tls_get_addr_call
13951 && rel
+ 1 < relend
13952 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13953 htab
->tls_get_addr
,
13954 htab
->tls_get_addr_fd
))
13955 offset
= rel
[1].r_offset
;
13956 /* We read the low GOT_TLS (or TOC16) insn because we
13957 need to keep the destination reg. It may be
13958 something other than the usual r3, and moved to r3
13959 before the call by intervening code. */
13960 insn1
= bfd_get_32 (input_bfd
,
13961 contents
+ rel
->r_offset
- d_offset
);
13962 if ((tls_mask
& tls_gd
) != 0)
13965 insn1
&= (0x1f << 21) | (0x1f << 16);
13966 insn1
|= 58 << 26; /* ld */
13967 insn2
= 0x7c636a14; /* add 3,3,13 */
13968 if (offset
!= (bfd_vma
) -1)
13969 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13970 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13971 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13972 + R_PPC64_GOT_TPREL16_DS
);
13974 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13975 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13980 insn1
&= 0x1f << 21;
13981 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13982 insn2
= 0x38630000; /* addi 3,3,0 */
13985 /* Was an LD reloc. */
13987 sec
= local_sections
[toc_symndx
];
13989 r_symndx
< symtab_hdr
->sh_info
;
13991 if (local_sections
[r_symndx
] == sec
)
13993 if (r_symndx
>= symtab_hdr
->sh_info
)
13994 r_symndx
= STN_UNDEF
;
13995 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13996 if (r_symndx
!= STN_UNDEF
)
13997 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13998 + sec
->output_offset
13999 + sec
->output_section
->vma
);
14001 else if (toc_symndx
!= 0)
14003 r_symndx
= toc_symndx
;
14004 rel
->r_addend
= toc_addend
;
14006 r_type
= R_PPC64_TPREL16_HA
;
14007 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14008 if (offset
!= (bfd_vma
) -1)
14010 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
14011 R_PPC64_TPREL16_LO
);
14012 rel
[1].r_offset
= offset
+ d_offset
;
14013 rel
[1].r_addend
= rel
->r_addend
;
14016 bfd_put_32 (input_bfd
, insn1
,
14017 contents
+ rel
->r_offset
- d_offset
);
14018 if (offset
!= (bfd_vma
) -1)
14019 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14020 if ((tls_mask
& tls_gd
) == 0
14021 && (tls_gd
== 0 || toc_symndx
!= 0))
14023 /* We changed the symbol. Start over in order
14024 to get h, sym, sec etc. right. */
14030 case R_PPC64_TLSGD
:
14031 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
14033 unsigned int insn2
;
14034 bfd_vma offset
= rel
->r_offset
;
14036 if ((tls_mask
& TLS_TPRELGD
) != 0)
14039 r_type
= R_PPC64_NONE
;
14040 insn2
= 0x7c636a14; /* add 3,3,13 */
14045 if (toc_symndx
!= 0)
14047 r_symndx
= toc_symndx
;
14048 rel
->r_addend
= toc_addend
;
14050 r_type
= R_PPC64_TPREL16_LO
;
14051 rel
->r_offset
= offset
+ d_offset
;
14052 insn2
= 0x38630000; /* addi 3,3,0 */
14054 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14055 /* Zap the reloc on the _tls_get_addr call too. */
14056 BFD_ASSERT (offset
== rel
[1].r_offset
);
14057 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14058 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14059 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
14064 case R_PPC64_TLSLD
:
14065 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
14067 unsigned int insn2
;
14068 bfd_vma offset
= rel
->r_offset
;
14071 sec
= local_sections
[toc_symndx
];
14073 r_symndx
< symtab_hdr
->sh_info
;
14075 if (local_sections
[r_symndx
] == sec
)
14077 if (r_symndx
>= symtab_hdr
->sh_info
)
14078 r_symndx
= STN_UNDEF
;
14079 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14080 if (r_symndx
!= STN_UNDEF
)
14081 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
14082 + sec
->output_offset
14083 + sec
->output_section
->vma
);
14085 r_type
= R_PPC64_TPREL16_LO
;
14086 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14087 rel
->r_offset
= offset
+ d_offset
;
14088 /* Zap the reloc on the _tls_get_addr call too. */
14089 BFD_ASSERT (offset
== rel
[1].r_offset
);
14090 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14091 insn2
= 0x38630000; /* addi 3,3,0 */
14092 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14097 case R_PPC64_DTPMOD64
:
14098 if (rel
+ 1 < relend
14099 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
14100 && rel
[1].r_offset
== rel
->r_offset
+ 8)
14102 if ((tls_mask
& TLS_GD
) == 0)
14104 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
14105 if ((tls_mask
& TLS_TPRELGD
) != 0)
14106 r_type
= R_PPC64_TPREL64
;
14109 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14110 r_type
= R_PPC64_NONE
;
14112 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14117 if ((tls_mask
& TLS_LD
) == 0)
14119 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14120 r_type
= R_PPC64_NONE
;
14121 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14126 case R_PPC64_TPREL64
:
14127 if ((tls_mask
& TLS_TPREL
) == 0)
14129 r_type
= R_PPC64_NONE
;
14130 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14134 case R_PPC64_ENTRY
:
14135 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14136 if (!bfd_link_pic (info
)
14137 && !info
->traditional_format
14138 && relocation
+ 0x80008000 <= 0xffffffff)
14140 unsigned int insn1
, insn2
;
14142 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14143 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14144 if ((insn1
& ~0xfffc) == LD_R2_0R12
14145 && insn2
== ADD_R2_R2_R12
)
14147 bfd_put_32 (input_bfd
,
14148 LIS_R2
+ PPC_HA (relocation
),
14149 contents
+ rel
->r_offset
);
14150 bfd_put_32 (input_bfd
,
14151 ADDI_R2_R2
+ PPC_LO (relocation
),
14152 contents
+ rel
->r_offset
+ 4);
14157 relocation
-= (rel
->r_offset
14158 + input_section
->output_offset
14159 + input_section
->output_section
->vma
);
14160 if (relocation
+ 0x80008000 <= 0xffffffff)
14162 unsigned int insn1
, insn2
;
14164 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14165 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14166 if ((insn1
& ~0xfffc) == LD_R2_0R12
14167 && insn2
== ADD_R2_R2_R12
)
14169 bfd_put_32 (input_bfd
,
14170 ADDIS_R2_R12
+ PPC_HA (relocation
),
14171 contents
+ rel
->r_offset
);
14172 bfd_put_32 (input_bfd
,
14173 ADDI_R2_R2
+ PPC_LO (relocation
),
14174 contents
+ rel
->r_offset
+ 4);
14180 case R_PPC64_REL16_HA
:
14181 /* If we are generating a non-PIC executable, edit
14182 . 0: addis 2,12,.TOC.-0b@ha
14183 . addi 2,2,.TOC.-0b@l
14184 used by ELFv2 global entry points to set up r2, to
14187 if .TOC. is in range. */
14188 if (!bfd_link_pic (info
)
14189 && !info
->traditional_format
14191 && rel
->r_addend
== d_offset
14192 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14193 && rel
+ 1 < relend
14194 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14195 && rel
[1].r_offset
== rel
->r_offset
+ 4
14196 && rel
[1].r_addend
== rel
->r_addend
+ 4
14197 && relocation
+ 0x80008000 <= 0xffffffff)
14199 unsigned int insn1
, insn2
;
14200 bfd_vma offset
= rel
->r_offset
- d_offset
;
14201 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14202 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14203 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14204 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14206 r_type
= R_PPC64_ADDR16_HA
;
14207 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14208 rel
->r_addend
-= d_offset
;
14209 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14210 rel
[1].r_addend
-= d_offset
+ 4;
14211 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14217 /* Handle other relocations that tweak non-addend part of insn. */
14219 max_br_offset
= 1 << 25;
14220 addend
= rel
->r_addend
;
14221 reloc_dest
= DEST_NORMAL
;
14227 case R_PPC64_TOCSAVE
:
14228 if (relocation
+ addend
== (rel
->r_offset
14229 + input_section
->output_offset
14230 + input_section
->output_section
->vma
)
14231 && tocsave_find (htab
, NO_INSERT
,
14232 &local_syms
, rel
, input_bfd
))
14234 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14236 || insn
== CROR_151515
|| insn
== CROR_313131
)
14237 bfd_put_32 (input_bfd
,
14238 STD_R2_0R1
+ STK_TOC (htab
),
14239 contents
+ rel
->r_offset
);
14243 /* Branch taken prediction relocations. */
14244 case R_PPC64_ADDR14_BRTAKEN
:
14245 case R_PPC64_REL14_BRTAKEN
:
14246 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14247 /* Fall through. */
14249 /* Branch not taken prediction relocations. */
14250 case R_PPC64_ADDR14_BRNTAKEN
:
14251 case R_PPC64_REL14_BRNTAKEN
:
14252 insn
|= bfd_get_32 (input_bfd
,
14253 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14254 /* Fall through. */
14256 case R_PPC64_REL14
:
14257 max_br_offset
= 1 << 15;
14258 /* Fall through. */
14260 case R_PPC64_REL24
:
14261 /* Calls to functions with a different TOC, such as calls to
14262 shared objects, need to alter the TOC pointer. This is
14263 done using a linkage stub. A REL24 branching to these
14264 linkage stubs needs to be followed by a nop, as the nop
14265 will be replaced with an instruction to restore the TOC
14270 && h
->oh
->is_func_descriptor
)
14271 fdh
= ppc_follow_link (h
->oh
);
14272 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14274 if (stub_entry
!= NULL
14275 && (stub_entry
->stub_type
== ppc_stub_plt_call
14276 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14277 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14278 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14280 bfd_boolean can_plt_call
= FALSE
;
14282 if (stub_entry
->stub_type
== ppc_stub_plt_call
14284 && htab
->params
->plt_localentry0
!= 0
14285 && is_elfv2_localentry0 (&h
->elf
))
14287 /* The function doesn't use or change r2. */
14288 can_plt_call
= TRUE
;
14291 /* All of these stubs may modify r2, so there must be a
14292 branch and link followed by a nop. The nop is
14293 replaced by an insn to restore r2. */
14294 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14298 br
= bfd_get_32 (input_bfd
,
14299 contents
+ rel
->r_offset
);
14304 nop
= bfd_get_32 (input_bfd
,
14305 contents
+ rel
->r_offset
+ 4);
14307 || nop
== CROR_151515
|| nop
== CROR_313131
)
14310 && (h
== htab
->tls_get_addr_fd
14311 || h
== htab
->tls_get_addr
)
14312 && htab
->params
->tls_get_addr_opt
)
14314 /* Special stub used, leave nop alone. */
14317 bfd_put_32 (input_bfd
,
14318 LD_R2_0R1
+ STK_TOC (htab
),
14319 contents
+ rel
->r_offset
+ 4);
14320 can_plt_call
= TRUE
;
14325 if (!can_plt_call
&& h
!= NULL
)
14327 const char *name
= h
->elf
.root
.root
.string
;
14332 if (strncmp (name
, "__libc_start_main", 17) == 0
14333 && (name
[17] == 0 || name
[17] == '@'))
14335 /* Allow crt1 branch to go via a toc adjusting
14336 stub. Other calls that never return could do
14337 the same, if we could detect such. */
14338 can_plt_call
= TRUE
;
14344 /* g++ as of 20130507 emits self-calls without a
14345 following nop. This is arguably wrong since we
14346 have conflicting information. On the one hand a
14347 global symbol and on the other a local call
14348 sequence, but don't error for this special case.
14349 It isn't possible to cheaply verify we have
14350 exactly such a call. Allow all calls to the same
14352 asection
*code_sec
= sec
;
14354 if (get_opd_info (sec
) != NULL
)
14356 bfd_vma off
= (relocation
+ addend
14357 - sec
->output_section
->vma
14358 - sec
->output_offset
);
14360 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14362 if (code_sec
== input_section
)
14363 can_plt_call
= TRUE
;
14368 if (stub_entry
->stub_type
== ppc_stub_plt_call
14369 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14370 info
->callbacks
->einfo
14371 /* xgettext:c-format */
14372 (_("%H: call to `%T' lacks nop, can't restore toc; "
14373 "recompile with -fPIC\n"),
14374 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14376 info
->callbacks
->einfo
14377 /* xgettext:c-format */
14378 (_("%H: call to `%T' lacks nop, can't restore toc; "
14379 "(-mcmodel=small toc adjust stub)\n"),
14380 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14382 bfd_set_error (bfd_error_bad_value
);
14387 && (stub_entry
->stub_type
== ppc_stub_plt_call
14388 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14389 unresolved_reloc
= FALSE
;
14392 if ((stub_entry
== NULL
14393 || stub_entry
->stub_type
== ppc_stub_long_branch
14394 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14395 && get_opd_info (sec
) != NULL
)
14397 /* The branch destination is the value of the opd entry. */
14398 bfd_vma off
= (relocation
+ addend
14399 - sec
->output_section
->vma
14400 - sec
->output_offset
);
14401 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14402 if (dest
!= (bfd_vma
) -1)
14406 reloc_dest
= DEST_OPD
;
14410 /* If the branch is out of reach we ought to have a long
14412 from
= (rel
->r_offset
14413 + input_section
->output_offset
14414 + input_section
->output_section
->vma
);
14416 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14420 if (stub_entry
!= NULL
14421 && (stub_entry
->stub_type
== ppc_stub_long_branch
14422 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14423 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14424 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14425 || (relocation
+ addend
- from
+ max_br_offset
14426 < 2 * max_br_offset
)))
14427 /* Don't use the stub if this branch is in range. */
14430 if (stub_entry
!= NULL
)
14432 /* Munge up the value and addend so that we call the stub
14433 rather than the procedure directly. */
14434 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14436 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14437 relocation
+= (stub_sec
->output_offset
14438 + stub_sec
->output_section
->vma
14439 + stub_sec
->size
- htab
->sfpr
->size
14440 - htab
->sfpr
->output_offset
14441 - htab
->sfpr
->output_section
->vma
);
14443 relocation
= (stub_entry
->stub_offset
14444 + stub_sec
->output_offset
14445 + stub_sec
->output_section
->vma
);
14447 reloc_dest
= DEST_STUB
;
14449 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14450 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14451 && (ALWAYS_EMIT_R2SAVE
14452 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14453 && rel
+ 1 < relend
14454 && rel
[1].r_offset
== rel
->r_offset
+ 4
14455 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14463 /* Set 'a' bit. This is 0b00010 in BO field for branch
14464 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14465 for branch on CTR insns (BO == 1a00t or 1a01t). */
14466 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14467 insn
|= 0x02 << 21;
14468 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14469 insn
|= 0x08 << 21;
14475 /* Invert 'y' bit if not the default. */
14476 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14477 insn
^= 0x01 << 21;
14480 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14483 /* NOP out calls to undefined weak functions.
14484 We can thus call a weak function without first
14485 checking whether the function is defined. */
14487 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14488 && h
->elf
.dynindx
== -1
14489 && r_type
== R_PPC64_REL24
14493 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14499 /* Set `addend'. */
14504 info
->callbacks
->einfo
14505 /* xgettext:c-format */
14506 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14507 input_bfd
, (int) r_type
, sym_name
);
14509 bfd_set_error (bfd_error_bad_value
);
14515 case R_PPC64_TLSGD
:
14516 case R_PPC64_TLSLD
:
14517 case R_PPC64_TOCSAVE
:
14518 case R_PPC64_GNU_VTINHERIT
:
14519 case R_PPC64_GNU_VTENTRY
:
14520 case R_PPC64_ENTRY
:
14523 /* GOT16 relocations. Like an ADDR16 using the symbol's
14524 address in the GOT as relocation value instead of the
14525 symbol's value itself. Also, create a GOT entry for the
14526 symbol and put the symbol value there. */
14527 case R_PPC64_GOT_TLSGD16
:
14528 case R_PPC64_GOT_TLSGD16_LO
:
14529 case R_PPC64_GOT_TLSGD16_HI
:
14530 case R_PPC64_GOT_TLSGD16_HA
:
14531 tls_type
= TLS_TLS
| TLS_GD
;
14534 case R_PPC64_GOT_TLSLD16
:
14535 case R_PPC64_GOT_TLSLD16_LO
:
14536 case R_PPC64_GOT_TLSLD16_HI
:
14537 case R_PPC64_GOT_TLSLD16_HA
:
14538 tls_type
= TLS_TLS
| TLS_LD
;
14541 case R_PPC64_GOT_TPREL16_DS
:
14542 case R_PPC64_GOT_TPREL16_LO_DS
:
14543 case R_PPC64_GOT_TPREL16_HI
:
14544 case R_PPC64_GOT_TPREL16_HA
:
14545 tls_type
= TLS_TLS
| TLS_TPREL
;
14548 case R_PPC64_GOT_DTPREL16_DS
:
14549 case R_PPC64_GOT_DTPREL16_LO_DS
:
14550 case R_PPC64_GOT_DTPREL16_HI
:
14551 case R_PPC64_GOT_DTPREL16_HA
:
14552 tls_type
= TLS_TLS
| TLS_DTPREL
;
14555 case R_PPC64_GOT16
:
14556 case R_PPC64_GOT16_LO
:
14557 case R_PPC64_GOT16_HI
:
14558 case R_PPC64_GOT16_HA
:
14559 case R_PPC64_GOT16_DS
:
14560 case R_PPC64_GOT16_LO_DS
:
14563 /* Relocation is to the entry for this symbol in the global
14568 unsigned long indx
= 0;
14569 struct got_entry
*ent
;
14571 if (tls_type
== (TLS_TLS
| TLS_LD
)
14573 || !h
->elf
.def_dynamic
))
14574 ent
= ppc64_tlsld_got (input_bfd
);
14579 if (!htab
->elf
.dynamic_sections_created
14580 || h
->elf
.dynindx
== -1
14581 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14582 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14583 /* This is actually a static link, or it is a
14584 -Bsymbolic link and the symbol is defined
14585 locally, or the symbol was forced to be local
14586 because of a version file. */
14590 indx
= h
->elf
.dynindx
;
14591 unresolved_reloc
= FALSE
;
14593 ent
= h
->elf
.got
.glist
;
14597 if (local_got_ents
== NULL
)
14599 ent
= local_got_ents
[r_symndx
];
14602 for (; ent
!= NULL
; ent
= ent
->next
)
14603 if (ent
->addend
== orig_rel
.r_addend
14604 && ent
->owner
== input_bfd
14605 && ent
->tls_type
== tls_type
)
14611 if (ent
->is_indirect
)
14612 ent
= ent
->got
.ent
;
14613 offp
= &ent
->got
.offset
;
14614 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14618 /* The offset must always be a multiple of 8. We use the
14619 least significant bit to record whether we have already
14620 processed this entry. */
14622 if ((off
& 1) != 0)
14626 /* Generate relocs for the dynamic linker, except in
14627 the case of TLSLD where we'll use one entry per
14635 ? h
->elf
.type
== STT_GNU_IFUNC
14636 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14639 relgot
= htab
->elf
.irelplt
;
14641 htab
->local_ifunc_resolver
= 1;
14642 else if (is_static_defined (&h
->elf
))
14643 htab
->maybe_local_ifunc_resolver
= 1;
14646 || (bfd_link_pic (info
)
14648 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14649 || (tls_type
== (TLS_TLS
| TLS_LD
)
14650 && !h
->elf
.def_dynamic
))))
14651 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14652 if (relgot
!= NULL
)
14654 outrel
.r_offset
= (got
->output_section
->vma
14655 + got
->output_offset
14657 outrel
.r_addend
= addend
;
14658 if (tls_type
& (TLS_LD
| TLS_GD
))
14660 outrel
.r_addend
= 0;
14661 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14662 if (tls_type
== (TLS_TLS
| TLS_GD
))
14664 loc
= relgot
->contents
;
14665 loc
+= (relgot
->reloc_count
++
14666 * sizeof (Elf64_External_Rela
));
14667 bfd_elf64_swap_reloca_out (output_bfd
,
14669 outrel
.r_offset
+= 8;
14670 outrel
.r_addend
= addend
;
14672 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14675 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14676 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14677 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14678 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14679 else if (indx
!= 0)
14680 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14684 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14686 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14688 /* Write the .got section contents for the sake
14690 loc
= got
->contents
+ off
;
14691 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14695 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14697 outrel
.r_addend
+= relocation
;
14698 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14700 if (htab
->elf
.tls_sec
== NULL
)
14701 outrel
.r_addend
= 0;
14703 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14706 loc
= relgot
->contents
;
14707 loc
+= (relgot
->reloc_count
++
14708 * sizeof (Elf64_External_Rela
));
14709 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14712 /* Init the .got section contents here if we're not
14713 emitting a reloc. */
14716 relocation
+= addend
;
14719 if (htab
->elf
.tls_sec
== NULL
)
14723 if (tls_type
& TLS_LD
)
14726 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14727 if (tls_type
& TLS_TPREL
)
14728 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14731 if (tls_type
& (TLS_GD
| TLS_LD
))
14733 bfd_put_64 (output_bfd
, relocation
,
14734 got
->contents
+ off
+ 8);
14738 bfd_put_64 (output_bfd
, relocation
,
14739 got
->contents
+ off
);
14743 if (off
>= (bfd_vma
) -2)
14746 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14747 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14751 case R_PPC64_PLT16_HA
:
14752 case R_PPC64_PLT16_HI
:
14753 case R_PPC64_PLT16_LO
:
14754 case R_PPC64_PLT32
:
14755 case R_PPC64_PLT64
:
14756 /* Relocation is to the entry for this symbol in the
14757 procedure linkage table. */
14759 struct plt_entry
**plt_list
= NULL
;
14761 plt_list
= &h
->elf
.plt
.plist
;
14762 else if (local_got_ents
!= NULL
)
14764 struct plt_entry
**local_plt
= (struct plt_entry
**)
14765 (local_got_ents
+ symtab_hdr
->sh_info
);
14766 unsigned char *local_got_tls_masks
= (unsigned char *)
14767 (local_plt
+ symtab_hdr
->sh_info
);
14768 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14769 plt_list
= local_plt
+ r_symndx
;
14773 struct plt_entry
*ent
;
14775 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14776 if (ent
->plt
.offset
!= (bfd_vma
) -1
14777 && ent
->addend
== orig_rel
.r_addend
)
14781 plt
= htab
->elf
.splt
;
14782 if (!htab
->elf
.dynamic_sections_created
14784 || h
->elf
.dynindx
== -1)
14785 plt
= htab
->elf
.iplt
;
14786 relocation
= (plt
->output_section
->vma
14787 + plt
->output_offset
14788 + ent
->plt
.offset
);
14790 unresolved_reloc
= FALSE
;
14798 /* Relocation value is TOC base. */
14799 relocation
= TOCstart
;
14800 if (r_symndx
== STN_UNDEF
)
14801 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14802 else if (unresolved_reloc
)
14804 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14805 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14807 unresolved_reloc
= TRUE
;
14810 /* TOC16 relocs. We want the offset relative to the TOC base,
14811 which is the address of the start of the TOC plus 0x8000.
14812 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14814 case R_PPC64_TOC16
:
14815 case R_PPC64_TOC16_LO
:
14816 case R_PPC64_TOC16_HI
:
14817 case R_PPC64_TOC16_DS
:
14818 case R_PPC64_TOC16_LO_DS
:
14819 case R_PPC64_TOC16_HA
:
14820 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14823 /* Relocate against the beginning of the section. */
14824 case R_PPC64_SECTOFF
:
14825 case R_PPC64_SECTOFF_LO
:
14826 case R_PPC64_SECTOFF_HI
:
14827 case R_PPC64_SECTOFF_DS
:
14828 case R_PPC64_SECTOFF_LO_DS
:
14829 case R_PPC64_SECTOFF_HA
:
14831 addend
-= sec
->output_section
->vma
;
14834 case R_PPC64_REL16
:
14835 case R_PPC64_REL16_LO
:
14836 case R_PPC64_REL16_HI
:
14837 case R_PPC64_REL16_HA
:
14838 case R_PPC64_REL16DX_HA
:
14841 case R_PPC64_REL14
:
14842 case R_PPC64_REL14_BRNTAKEN
:
14843 case R_PPC64_REL14_BRTAKEN
:
14844 case R_PPC64_REL24
:
14847 case R_PPC64_TPREL16
:
14848 case R_PPC64_TPREL16_LO
:
14849 case R_PPC64_TPREL16_HI
:
14850 case R_PPC64_TPREL16_HA
:
14851 case R_PPC64_TPREL16_DS
:
14852 case R_PPC64_TPREL16_LO_DS
:
14853 case R_PPC64_TPREL16_HIGH
:
14854 case R_PPC64_TPREL16_HIGHA
:
14855 case R_PPC64_TPREL16_HIGHER
:
14856 case R_PPC64_TPREL16_HIGHERA
:
14857 case R_PPC64_TPREL16_HIGHEST
:
14858 case R_PPC64_TPREL16_HIGHESTA
:
14860 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14861 && h
->elf
.dynindx
== -1)
14863 /* Make this relocation against an undefined weak symbol
14864 resolve to zero. This is really just a tweak, since
14865 code using weak externs ought to check that they are
14866 defined before using them. */
14867 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14869 insn
= bfd_get_32 (input_bfd
, p
);
14870 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14872 bfd_put_32 (input_bfd
, insn
, p
);
14875 if (htab
->elf
.tls_sec
!= NULL
)
14876 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14877 /* The TPREL16 relocs shouldn't really be used in shared
14878 libs or with non-local symbols as that will result in
14879 DT_TEXTREL being set, but support them anyway. */
14882 case R_PPC64_DTPREL16
:
14883 case R_PPC64_DTPREL16_LO
:
14884 case R_PPC64_DTPREL16_HI
:
14885 case R_PPC64_DTPREL16_HA
:
14886 case R_PPC64_DTPREL16_DS
:
14887 case R_PPC64_DTPREL16_LO_DS
:
14888 case R_PPC64_DTPREL16_HIGH
:
14889 case R_PPC64_DTPREL16_HIGHA
:
14890 case R_PPC64_DTPREL16_HIGHER
:
14891 case R_PPC64_DTPREL16_HIGHERA
:
14892 case R_PPC64_DTPREL16_HIGHEST
:
14893 case R_PPC64_DTPREL16_HIGHESTA
:
14894 if (htab
->elf
.tls_sec
!= NULL
)
14895 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14898 case R_PPC64_ADDR64_LOCAL
:
14899 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14904 case R_PPC64_DTPMOD64
:
14909 case R_PPC64_TPREL64
:
14910 if (htab
->elf
.tls_sec
!= NULL
)
14911 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14914 case R_PPC64_DTPREL64
:
14915 if (htab
->elf
.tls_sec
!= NULL
)
14916 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14917 /* Fall through. */
14919 /* Relocations that may need to be propagated if this is a
14921 case R_PPC64_REL30
:
14922 case R_PPC64_REL32
:
14923 case R_PPC64_REL64
:
14924 case R_PPC64_ADDR14
:
14925 case R_PPC64_ADDR14_BRNTAKEN
:
14926 case R_PPC64_ADDR14_BRTAKEN
:
14927 case R_PPC64_ADDR16
:
14928 case R_PPC64_ADDR16_DS
:
14929 case R_PPC64_ADDR16_HA
:
14930 case R_PPC64_ADDR16_HI
:
14931 case R_PPC64_ADDR16_HIGH
:
14932 case R_PPC64_ADDR16_HIGHA
:
14933 case R_PPC64_ADDR16_HIGHER
:
14934 case R_PPC64_ADDR16_HIGHERA
:
14935 case R_PPC64_ADDR16_HIGHEST
:
14936 case R_PPC64_ADDR16_HIGHESTA
:
14937 case R_PPC64_ADDR16_LO
:
14938 case R_PPC64_ADDR16_LO_DS
:
14939 case R_PPC64_ADDR24
:
14940 case R_PPC64_ADDR32
:
14941 case R_PPC64_ADDR64
:
14942 case R_PPC64_UADDR16
:
14943 case R_PPC64_UADDR32
:
14944 case R_PPC64_UADDR64
:
14946 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14949 if (NO_OPD_RELOCS
&& is_opd
)
14952 if (bfd_link_pic (info
)
14954 || h
->dyn_relocs
!= NULL
)
14955 && ((h
!= NULL
&& pc_dynrelocs (h
))
14956 || must_be_dyn_reloc (info
, r_type
)))
14958 ? h
->dyn_relocs
!= NULL
14959 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14961 bfd_boolean skip
, relocate
;
14966 /* When generating a dynamic object, these relocations
14967 are copied into the output file to be resolved at run
14973 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14974 input_section
, rel
->r_offset
);
14975 if (out_off
== (bfd_vma
) -1)
14977 else if (out_off
== (bfd_vma
) -2)
14978 skip
= TRUE
, relocate
= TRUE
;
14979 out_off
+= (input_section
->output_section
->vma
14980 + input_section
->output_offset
);
14981 outrel
.r_offset
= out_off
;
14982 outrel
.r_addend
= rel
->r_addend
;
14984 /* Optimize unaligned reloc use. */
14985 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14986 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14987 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14988 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14989 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14990 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14991 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14992 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14993 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14996 memset (&outrel
, 0, sizeof outrel
);
14997 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14999 && r_type
!= R_PPC64_TOC
)
15001 indx
= h
->elf
.dynindx
;
15002 BFD_ASSERT (indx
!= -1);
15003 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15007 /* This symbol is local, or marked to become local,
15008 or this is an opd section reloc which must point
15009 at a local function. */
15010 outrel
.r_addend
+= relocation
;
15011 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
15013 if (is_opd
&& h
!= NULL
)
15015 /* Lie about opd entries. This case occurs
15016 when building shared libraries and we
15017 reference a function in another shared
15018 lib. The same thing happens for a weak
15019 definition in an application that's
15020 overridden by a strong definition in a
15021 shared lib. (I believe this is a generic
15022 bug in binutils handling of weak syms.)
15023 In these cases we won't use the opd
15024 entry in this lib. */
15025 unresolved_reloc
= FALSE
;
15028 && r_type
== R_PPC64_ADDR64
15030 ? h
->elf
.type
== STT_GNU_IFUNC
15031 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
15032 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15035 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
15037 /* We need to relocate .opd contents for ld.so.
15038 Prelink also wants simple and consistent rules
15039 for relocs. This make all RELATIVE relocs have
15040 *r_offset equal to r_addend. */
15047 ? h
->elf
.type
== STT_GNU_IFUNC
15048 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15050 info
->callbacks
->einfo
15051 /* xgettext:c-format */
15052 (_("%H: %s for indirect "
15053 "function `%T' unsupported\n"),
15054 input_bfd
, input_section
, rel
->r_offset
,
15055 ppc64_elf_howto_table
[r_type
]->name
,
15059 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
15061 else if (sec
== NULL
|| sec
->owner
== NULL
)
15063 bfd_set_error (bfd_error_bad_value
);
15070 osec
= sec
->output_section
;
15071 indx
= elf_section_data (osec
)->dynindx
;
15075 if ((osec
->flags
& SEC_READONLY
) == 0
15076 && htab
->elf
.data_index_section
!= NULL
)
15077 osec
= htab
->elf
.data_index_section
;
15079 osec
= htab
->elf
.text_index_section
;
15080 indx
= elf_section_data (osec
)->dynindx
;
15082 BFD_ASSERT (indx
!= 0);
15084 /* We are turning this relocation into one
15085 against a section symbol, so subtract out
15086 the output section's address but not the
15087 offset of the input section in the output
15089 outrel
.r_addend
-= osec
->vma
;
15092 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15096 sreloc
= elf_section_data (input_section
)->sreloc
;
15098 ? h
->elf
.type
== STT_GNU_IFUNC
15099 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15101 sreloc
= htab
->elf
.irelplt
;
15103 htab
->local_ifunc_resolver
= 1;
15104 else if (is_static_defined (&h
->elf
))
15105 htab
->maybe_local_ifunc_resolver
= 1;
15107 if (sreloc
== NULL
)
15110 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
15113 loc
= sreloc
->contents
;
15114 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15115 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15117 /* If this reloc is against an external symbol, it will
15118 be computed at runtime, so there's no need to do
15119 anything now. However, for the sake of prelink ensure
15120 that the section contents are a known value. */
15123 unresolved_reloc
= FALSE
;
15124 /* The value chosen here is quite arbitrary as ld.so
15125 ignores section contents except for the special
15126 case of .opd where the contents might be accessed
15127 before relocation. Choose zero, as that won't
15128 cause reloc overflow. */
15131 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15132 to improve backward compatibility with older
15134 if (r_type
== R_PPC64_ADDR64
)
15135 addend
= outrel
.r_addend
;
15136 /* Adjust pc_relative relocs to have zero in *r_offset. */
15137 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15138 addend
= outrel
.r_offset
;
15144 case R_PPC64_GLOB_DAT
:
15145 case R_PPC64_JMP_SLOT
:
15146 case R_PPC64_JMP_IREL
:
15147 case R_PPC64_RELATIVE
:
15148 /* We shouldn't ever see these dynamic relocs in relocatable
15150 /* Fall through. */
15152 case R_PPC64_PLTGOT16
:
15153 case R_PPC64_PLTGOT16_DS
:
15154 case R_PPC64_PLTGOT16_HA
:
15155 case R_PPC64_PLTGOT16_HI
:
15156 case R_PPC64_PLTGOT16_LO
:
15157 case R_PPC64_PLTGOT16_LO_DS
:
15158 case R_PPC64_PLTREL32
:
15159 case R_PPC64_PLTREL64
:
15160 /* These ones haven't been implemented yet. */
15162 info
->callbacks
->einfo
15163 /* xgettext:c-format */
15164 (_("%P: %B: %s is not supported for `%T'\n"),
15166 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15168 bfd_set_error (bfd_error_invalid_operation
);
15173 /* Multi-instruction sequences that access the TOC can be
15174 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15175 to nop; addi rb,r2,x; */
15176 howto
= ppc64_elf_howto_table
[(int) r_type
];
15182 case R_PPC64_GOT_TLSLD16_HI
:
15183 case R_PPC64_GOT_TLSGD16_HI
:
15184 case R_PPC64_GOT_TPREL16_HI
:
15185 case R_PPC64_GOT_DTPREL16_HI
:
15186 case R_PPC64_GOT16_HI
:
15187 case R_PPC64_TOC16_HI
:
15188 /* These relocs would only be useful if building up an
15189 offset to later add to r2, perhaps in an indexed
15190 addressing mode instruction. Don't try to optimize.
15191 Unfortunately, the possibility of someone building up an
15192 offset like this or even with the HA relocs, means that
15193 we need to check the high insn when optimizing the low
15197 case R_PPC64_GOT_TLSLD16_HA
:
15198 case R_PPC64_GOT_TLSGD16_HA
:
15199 case R_PPC64_GOT_TPREL16_HA
:
15200 case R_PPC64_GOT_DTPREL16_HA
:
15201 case R_PPC64_GOT16_HA
:
15202 case R_PPC64_TOC16_HA
:
15203 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15204 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15206 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15207 bfd_put_32 (input_bfd
, NOP
, p
);
15211 case R_PPC64_GOT_TLSLD16_LO
:
15212 case R_PPC64_GOT_TLSGD16_LO
:
15213 case R_PPC64_GOT_TPREL16_LO_DS
:
15214 case R_PPC64_GOT_DTPREL16_LO_DS
:
15215 case R_PPC64_GOT16_LO
:
15216 case R_PPC64_GOT16_LO_DS
:
15217 case R_PPC64_TOC16_LO
:
15218 case R_PPC64_TOC16_LO_DS
:
15219 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15220 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15222 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15223 insn
= bfd_get_32 (input_bfd
, p
);
15224 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15226 /* Transform addic to addi when we change reg. */
15227 insn
&= ~((0x3f << 26) | (0x1f << 16));
15228 insn
|= (14u << 26) | (2 << 16);
15232 insn
&= ~(0x1f << 16);
15235 bfd_put_32 (input_bfd
, insn
, p
);
15239 case R_PPC64_TPREL16_HA
:
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 if ((insn
& ((0x3f << 26) | 0x1f << 16))
15245 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15246 /* xgettext:c-format */
15247 info
->callbacks
->minfo
15248 (_("%H: warning: %s unexpected insn %#x.\n"),
15249 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
15251 bfd_put_32 (input_bfd
, NOP
, p
);
15255 case R_PPC64_TPREL16_LO
:
15256 case R_PPC64_TPREL16_LO_DS
:
15257 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
15259 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15260 insn
= bfd_get_32 (input_bfd
, p
);
15261 insn
&= ~(0x1f << 16);
15263 bfd_put_32 (input_bfd
, insn
, p
);
15268 /* Do any further special processing. */
15274 case R_PPC64_REL16_HA
:
15275 case R_PPC64_REL16DX_HA
:
15276 case R_PPC64_ADDR16_HA
:
15277 case R_PPC64_ADDR16_HIGHA
:
15278 case R_PPC64_ADDR16_HIGHERA
:
15279 case R_PPC64_ADDR16_HIGHESTA
:
15280 case R_PPC64_TOC16_HA
:
15281 case R_PPC64_SECTOFF_HA
:
15282 case R_PPC64_TPREL16_HA
:
15283 case R_PPC64_TPREL16_HIGHA
:
15284 case R_PPC64_TPREL16_HIGHERA
:
15285 case R_PPC64_TPREL16_HIGHESTA
:
15286 case R_PPC64_DTPREL16_HA
:
15287 case R_PPC64_DTPREL16_HIGHA
:
15288 case R_PPC64_DTPREL16_HIGHERA
:
15289 case R_PPC64_DTPREL16_HIGHESTA
:
15290 /* It's just possible that this symbol is a weak symbol
15291 that's not actually defined anywhere. In that case,
15292 'sec' would be NULL, and we should leave the symbol
15293 alone (it will be set to zero elsewhere in the link). */
15296 /* Fall through. */
15298 case R_PPC64_GOT16_HA
:
15299 case R_PPC64_PLTGOT16_HA
:
15300 case R_PPC64_PLT16_HA
:
15301 case R_PPC64_GOT_TLSGD16_HA
:
15302 case R_PPC64_GOT_TLSLD16_HA
:
15303 case R_PPC64_GOT_TPREL16_HA
:
15304 case R_PPC64_GOT_DTPREL16_HA
:
15305 /* Add 0x10000 if sign bit in 0:15 is set.
15306 Bits 0:15 are not used. */
15310 case R_PPC64_ADDR16_DS
:
15311 case R_PPC64_ADDR16_LO_DS
:
15312 case R_PPC64_GOT16_DS
:
15313 case R_PPC64_GOT16_LO_DS
:
15314 case R_PPC64_PLT16_LO_DS
:
15315 case R_PPC64_SECTOFF_DS
:
15316 case R_PPC64_SECTOFF_LO_DS
:
15317 case R_PPC64_TOC16_DS
:
15318 case R_PPC64_TOC16_LO_DS
:
15319 case R_PPC64_PLTGOT16_DS
:
15320 case R_PPC64_PLTGOT16_LO_DS
:
15321 case R_PPC64_GOT_TPREL16_DS
:
15322 case R_PPC64_GOT_TPREL16_LO_DS
:
15323 case R_PPC64_GOT_DTPREL16_DS
:
15324 case R_PPC64_GOT_DTPREL16_LO_DS
:
15325 case R_PPC64_TPREL16_DS
:
15326 case R_PPC64_TPREL16_LO_DS
:
15327 case R_PPC64_DTPREL16_DS
:
15328 case R_PPC64_DTPREL16_LO_DS
:
15329 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15331 /* If this reloc is against an lq, lxv, or stxv insn, then
15332 the value must be a multiple of 16. This is somewhat of
15333 a hack, but the "correct" way to do this by defining _DQ
15334 forms of all the _DS relocs bloats all reloc switches in
15335 this file. It doesn't make much sense to use these
15336 relocs in data, so testing the insn should be safe. */
15337 if ((insn
& (0x3f << 26)) == (56u << 26)
15338 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15340 relocation
+= addend
;
15341 addend
= insn
& (mask
^ 3);
15342 if ((relocation
& mask
) != 0)
15344 relocation
^= relocation
& mask
;
15345 info
->callbacks
->einfo
15346 /* xgettext:c-format */
15347 (_("%H: error: %s not a multiple of %u\n"),
15348 input_bfd
, input_section
, rel
->r_offset
,
15351 bfd_set_error (bfd_error_bad_value
);
15358 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15359 because such sections are not SEC_ALLOC and thus ld.so will
15360 not process them. */
15361 if (unresolved_reloc
15362 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15363 && h
->elf
.def_dynamic
)
15364 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15365 rel
->r_offset
) != (bfd_vma
) -1)
15367 info
->callbacks
->einfo
15368 /* xgettext:c-format */
15369 (_("%H: unresolvable %s against `%T'\n"),
15370 input_bfd
, input_section
, rel
->r_offset
,
15372 h
->elf
.root
.root
.string
);
15376 /* 16-bit fields in insns mostly have signed values, but a
15377 few insns have 16-bit unsigned values. Really, we should
15378 have different reloc types. */
15379 if (howto
->complain_on_overflow
!= complain_overflow_dont
15380 && howto
->dst_mask
== 0xffff
15381 && (input_section
->flags
& SEC_CODE
) != 0)
15383 enum complain_overflow complain
= complain_overflow_signed
;
15385 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15386 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15387 complain
= complain_overflow_bitfield
;
15388 else if (howto
->rightshift
== 0
15389 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15390 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15391 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15392 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15393 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15394 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15395 complain
= complain_overflow_unsigned
;
15396 if (howto
->complain_on_overflow
!= complain
)
15398 alt_howto
= *howto
;
15399 alt_howto
.complain_on_overflow
= complain
;
15400 howto
= &alt_howto
;
15404 if (r_type
== R_PPC64_REL16DX_HA
)
15406 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15407 if (rel
->r_offset
+ 4 > input_section
->size
)
15408 r
= bfd_reloc_outofrange
;
15411 relocation
+= addend
;
15412 relocation
-= (rel
->r_offset
15413 + input_section
->output_offset
15414 + input_section
->output_section
->vma
);
15415 relocation
= (bfd_signed_vma
) relocation
>> 16;
15416 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15418 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15419 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15421 if (relocation
+ 0x8000 > 0xffff)
15422 r
= bfd_reloc_overflow
;
15426 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15427 rel
->r_offset
, relocation
, addend
);
15429 if (r
!= bfd_reloc_ok
)
15431 char *more_info
= NULL
;
15432 const char *reloc_name
= howto
->name
;
15434 if (reloc_dest
!= DEST_NORMAL
)
15436 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15437 if (more_info
!= NULL
)
15439 strcpy (more_info
, reloc_name
);
15440 strcat (more_info
, (reloc_dest
== DEST_OPD
15441 ? " (OPD)" : " (stub)"));
15442 reloc_name
= more_info
;
15446 if (r
== bfd_reloc_overflow
)
15448 /* On code like "if (foo) foo();" don't report overflow
15449 on a branch to zero when foo is undefined. */
15451 && (reloc_dest
== DEST_STUB
15453 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15454 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15455 && is_branch_reloc (r_type
))))
15456 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15457 sym_name
, reloc_name
,
15459 input_bfd
, input_section
,
15464 info
->callbacks
->einfo
15465 /* xgettext:c-format */
15466 (_("%H: %s against `%T': error %d\n"),
15467 input_bfd
, input_section
, rel
->r_offset
,
15468 reloc_name
, sym_name
, (int) r
);
15471 if (more_info
!= NULL
)
15481 Elf_Internal_Shdr
*rel_hdr
;
15482 size_t deleted
= rel
- wrel
;
15484 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15485 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15486 if (rel_hdr
->sh_size
== 0)
15488 /* It is too late to remove an empty reloc section. Leave
15490 ??? What is wrong with an empty section??? */
15491 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15494 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15495 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15496 input_section
->reloc_count
-= deleted
;
15499 /* If we're emitting relocations, then shortly after this function
15500 returns, reloc offsets and addends for this section will be
15501 adjusted. Worse, reloc symbol indices will be for the output
15502 file rather than the input. Save a copy of the relocs for
15503 opd_entry_value. */
15504 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15507 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15508 rel
= bfd_alloc (input_bfd
, amt
);
15509 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15510 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15513 memcpy (rel
, relocs
, amt
);
15518 /* Adjust the value of any local symbols in opd sections. */
15521 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15522 const char *name ATTRIBUTE_UNUSED
,
15523 Elf_Internal_Sym
*elfsym
,
15524 asection
*input_sec
,
15525 struct elf_link_hash_entry
*h
)
15527 struct _opd_sec_data
*opd
;
15534 opd
= get_opd_info (input_sec
);
15535 if (opd
== NULL
|| opd
->adjust
== NULL
)
15538 value
= elfsym
->st_value
- input_sec
->output_offset
;
15539 if (!bfd_link_relocatable (info
))
15540 value
-= input_sec
->output_section
->vma
;
15542 adjust
= opd
->adjust
[OPD_NDX (value
)];
15546 elfsym
->st_value
+= adjust
;
15550 /* Finish up dynamic symbol handling. We set the contents of various
15551 dynamic sections here. */
15554 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15555 struct bfd_link_info
*info
,
15556 struct elf_link_hash_entry
*h
,
15557 Elf_Internal_Sym
*sym
)
15559 struct ppc_link_hash_table
*htab
;
15560 struct plt_entry
*ent
;
15561 Elf_Internal_Rela rela
;
15564 htab
= ppc_hash_table (info
);
15568 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15569 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15571 /* This symbol has an entry in the procedure linkage
15572 table. Set it up. */
15573 if (!htab
->elf
.dynamic_sections_created
15574 || h
->dynindx
== -1)
15576 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15578 && (h
->root
.type
== bfd_link_hash_defined
15579 || h
->root
.type
== bfd_link_hash_defweak
));
15580 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15581 + htab
->elf
.iplt
->output_offset
15582 + ent
->plt
.offset
);
15584 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15586 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15587 rela
.r_addend
= (h
->root
.u
.def
.value
15588 + h
->root
.u
.def
.section
->output_offset
15589 + h
->root
.u
.def
.section
->output_section
->vma
15591 loc
= (htab
->elf
.irelplt
->contents
15592 + (htab
->elf
.irelplt
->reloc_count
++
15593 * sizeof (Elf64_External_Rela
)));
15594 htab
->local_ifunc_resolver
= 1;
15598 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15599 + htab
->elf
.splt
->output_offset
15600 + ent
->plt
.offset
);
15601 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15602 rela
.r_addend
= ent
->addend
;
15603 loc
= (htab
->elf
.srelplt
->contents
15604 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15605 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15606 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15607 htab
->maybe_local_ifunc_resolver
= 1;
15609 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15611 if (!htab
->opd_abi
)
15613 if (!h
->def_regular
)
15615 /* Mark the symbol as undefined, rather than as
15616 defined in glink. Leave the value if there were
15617 any relocations where pointer equality matters
15618 (this is a clue for the dynamic linker, to make
15619 function pointer comparisons work between an
15620 application and shared library), otherwise set it
15622 sym
->st_shndx
= SHN_UNDEF
;
15623 if (!h
->pointer_equality_needed
)
15625 else if (!h
->ref_regular_nonweak
)
15627 /* This breaks function pointer comparisons, but
15628 that is better than breaking tests for a NULL
15629 function pointer. */
15638 /* This symbol needs a copy reloc. Set it up. */
15641 if (h
->dynindx
== -1
15642 || (h
->root
.type
!= bfd_link_hash_defined
15643 && h
->root
.type
!= bfd_link_hash_defweak
)
15644 || htab
->elf
.srelbss
== NULL
15645 || htab
->elf
.sreldynrelro
== NULL
)
15648 rela
.r_offset
= (h
->root
.u
.def
.value
15649 + h
->root
.u
.def
.section
->output_section
->vma
15650 + h
->root
.u
.def
.section
->output_offset
);
15651 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15653 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15654 srel
= htab
->elf
.sreldynrelro
;
15656 srel
= htab
->elf
.srelbss
;
15657 loc
= srel
->contents
;
15658 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15659 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15665 /* Used to decide how to sort relocs in an optimal manner for the
15666 dynamic linker, before writing them out. */
15668 static enum elf_reloc_type_class
15669 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15670 const asection
*rel_sec
,
15671 const Elf_Internal_Rela
*rela
)
15673 enum elf_ppc64_reloc_type r_type
;
15674 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15676 if (rel_sec
== htab
->elf
.irelplt
)
15677 return reloc_class_ifunc
;
15679 r_type
= ELF64_R_TYPE (rela
->r_info
);
15682 case R_PPC64_RELATIVE
:
15683 return reloc_class_relative
;
15684 case R_PPC64_JMP_SLOT
:
15685 return reloc_class_plt
;
15687 return reloc_class_copy
;
15689 return reloc_class_normal
;
15693 /* Finish up the dynamic sections. */
15696 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15697 struct bfd_link_info
*info
)
15699 struct ppc_link_hash_table
*htab
;
15703 htab
= ppc_hash_table (info
);
15707 dynobj
= htab
->elf
.dynobj
;
15708 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15710 if (htab
->elf
.dynamic_sections_created
)
15712 Elf64_External_Dyn
*dyncon
, *dynconend
;
15714 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15717 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15718 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15719 for (; dyncon
< dynconend
; dyncon
++)
15721 Elf_Internal_Dyn dyn
;
15724 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15731 case DT_PPC64_GLINK
:
15733 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15734 /* We stupidly defined DT_PPC64_GLINK to be the start
15735 of glink rather than the first entry point, which is
15736 what ld.so needs, and now have a bigger stub to
15737 support automatic multiple TOCs. */
15738 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15742 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15745 dyn
.d_un
.d_ptr
= s
->vma
;
15749 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15750 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15751 if (htab
->has_plt_localentry0
)
15752 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15755 case DT_PPC64_OPDSZ
:
15756 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15759 dyn
.d_un
.d_val
= s
->size
;
15763 s
= htab
->elf
.splt
;
15764 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15768 s
= htab
->elf
.srelplt
;
15769 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15773 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15777 if (htab
->local_ifunc_resolver
)
15778 info
->callbacks
->einfo
15779 (_("%X%P: text relocations and GNU indirect "
15780 "functions will result in a segfault at runtime\n"));
15781 else if (htab
->maybe_local_ifunc_resolver
)
15782 info
->callbacks
->einfo
15783 (_("%P: warning: text relocations and GNU indirect "
15784 "functions may result in a segfault at runtime\n"));
15788 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15792 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15793 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15795 /* Fill in the first entry in the global offset table.
15796 We use it to hold the link-time TOCbase. */
15797 bfd_put_64 (output_bfd
,
15798 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15799 htab
->elf
.sgot
->contents
);
15801 /* Set .got entry size. */
15802 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15805 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15806 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15808 /* Set .plt entry size. */
15809 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15810 = PLT_ENTRY_SIZE (htab
);
15813 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15814 brlt ourselves if emitrelocations. */
15815 if (htab
->brlt
!= NULL
15816 && htab
->brlt
->reloc_count
!= 0
15817 && !_bfd_elf_link_output_relocs (output_bfd
,
15819 elf_section_data (htab
->brlt
)->rela
.hdr
,
15820 elf_section_data (htab
->brlt
)->relocs
,
15824 if (htab
->glink
!= NULL
15825 && htab
->glink
->reloc_count
!= 0
15826 && !_bfd_elf_link_output_relocs (output_bfd
,
15828 elf_section_data (htab
->glink
)->rela
.hdr
,
15829 elf_section_data (htab
->glink
)->relocs
,
15833 if (htab
->glink_eh_frame
!= NULL
15834 && htab
->glink_eh_frame
->size
!= 0)
15838 struct map_stub
*group
;
15841 p
= htab
->glink_eh_frame
->contents
;
15842 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15844 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15845 if (group
->stub_sec
!= NULL
)
15847 /* Offset to stub section. */
15848 val
= (group
->stub_sec
->output_section
->vma
15849 + group
->stub_sec
->output_offset
);
15850 val
-= (htab
->glink_eh_frame
->output_section
->vma
15851 + htab
->glink_eh_frame
->output_offset
15852 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15853 if (val
+ 0x80000000 > 0xffffffff)
15855 info
->callbacks
->einfo
15856 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15857 group
->stub_sec
->name
);
15860 bfd_put_32 (dynobj
, val
, p
+ 8);
15861 p
+= stub_eh_frame_size (group
, align
);
15863 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15865 /* Offset to .glink. */
15866 val
= (htab
->glink
->output_section
->vma
15867 + htab
->glink
->output_offset
15869 val
-= (htab
->glink_eh_frame
->output_section
->vma
15870 + htab
->glink_eh_frame
->output_offset
15871 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15872 if (val
+ 0x80000000 > 0xffffffff)
15874 info
->callbacks
->einfo
15875 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15876 htab
->glink
->name
);
15879 bfd_put_32 (dynobj
, val
, p
+ 8);
15880 p
+= (24 + align
- 1) & -align
;
15883 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15884 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15885 htab
->glink_eh_frame
,
15886 htab
->glink_eh_frame
->contents
))
15890 /* We need to handle writing out multiple GOT sections ourselves,
15891 since we didn't add them to DYNOBJ. We know dynobj is the first
15893 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15897 if (!is_ppc64_elf (dynobj
))
15900 s
= ppc64_elf_tdata (dynobj
)->got
;
15903 && s
->output_section
!= bfd_abs_section_ptr
15904 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15905 s
->contents
, s
->output_offset
,
15908 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15911 && s
->output_section
!= bfd_abs_section_ptr
15912 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15913 s
->contents
, s
->output_offset
,
15921 #include "elf64-target.h"
15923 /* FreeBSD support */
15925 #undef TARGET_LITTLE_SYM
15926 #undef TARGET_LITTLE_NAME
15928 #undef TARGET_BIG_SYM
15929 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15930 #undef TARGET_BIG_NAME
15931 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15934 #define ELF_OSABI ELFOSABI_FREEBSD
15937 #define elf64_bed elf64_powerpc_fbsd_bed
15939 #include "elf64-target.h"