1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*, bfd_boolean
);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* glink call stub instructions. We enter with the index in R0. */
191 #define GLINK_CALL_STUB_SIZE (16*4)
195 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
196 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
198 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
199 /* ld %2,(0b-1b)(%11) */
200 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
201 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
207 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
208 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
209 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
210 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
211 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
214 #define NOP 0x60000000
216 /* Some other nops. */
217 #define CROR_151515 0x4def7b82
218 #define CROR_313131 0x4ffffb82
220 /* .glink entries for the first 32k functions are two instructions. */
221 #define LI_R0_0 0x38000000 /* li %r0,0 */
222 #define B_DOT 0x48000000 /* b . */
224 /* After that, we need two instructions to load the index, followed by
226 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
227 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
229 /* Instructions used by the save and restore reg functions. */
230 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
231 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
232 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
233 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
234 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
235 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
236 #define LI_R12_0 0x39800000 /* li %r12,0 */
237 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
238 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
239 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
240 #define BLR 0x4e800020 /* blr */
242 /* Since .opd is an array of descriptors and each entry will end up
243 with identical R_PPC64_RELATIVE relocs, there is really no need to
244 propagate .opd relocs; The dynamic linker should be taught to
245 relocate .opd without reloc entries. */
246 #ifndef NO_OPD_RELOCS
247 #define NO_OPD_RELOCS 0
251 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
255 abiversion (bfd
*abfd
)
257 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
261 set_abiversion (bfd
*abfd
, int ver
)
263 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
264 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
267 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
269 /* Relocation HOWTO's. */
270 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
272 static reloc_howto_type ppc64_elf_howto_raw
[] = {
273 /* This reloc does nothing. */
274 HOWTO (R_PPC64_NONE
, /* type */
276 3, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE
, /* pc_relative */
280 complain_overflow_dont
, /* complain_on_overflow */
281 bfd_elf_generic_reloc
, /* special_function */
282 "R_PPC64_NONE", /* name */
283 FALSE
, /* partial_inplace */
286 FALSE
), /* pcrel_offset */
288 /* A standard 32 bit relocation. */
289 HOWTO (R_PPC64_ADDR32
, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE
, /* pc_relative */
295 complain_overflow_bitfield
, /* complain_on_overflow */
296 bfd_elf_generic_reloc
, /* special_function */
297 "R_PPC64_ADDR32", /* name */
298 FALSE
, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 FALSE
), /* pcrel_offset */
303 /* An absolute 26 bit branch; the lower two bits must be zero.
304 FIXME: we don't check that, we just clear them. */
305 HOWTO (R_PPC64_ADDR24
, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_bitfield
, /* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_PPC64_ADDR24", /* name */
314 FALSE
, /* partial_inplace */
316 0x03fffffc, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* A standard 16 bit relocation. */
320 HOWTO (R_PPC64_ADDR16
, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_bitfield
, /* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC64_ADDR16", /* name */
329 FALSE
, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* A 16 bit relocation without overflow. */
335 HOWTO (R_PPC64_ADDR16_LO
, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_dont
,/* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC64_ADDR16_LO", /* name */
344 FALSE
, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* Bits 16-31 of an address. */
350 HOWTO (R_PPC64_ADDR16_HI
, /* type */
352 1, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE
, /* pc_relative */
356 complain_overflow_signed
, /* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_PPC64_ADDR16_HI", /* name */
359 FALSE
, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE
), /* pcrel_offset */
364 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
365 bits, treated as a signed number, is negative. */
366 HOWTO (R_PPC64_ADDR16_HA
, /* type */
368 1, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE
, /* pc_relative */
372 complain_overflow_signed
, /* complain_on_overflow */
373 ppc64_elf_ha_reloc
, /* special_function */
374 "R_PPC64_ADDR16_HA", /* name */
375 FALSE
, /* partial_inplace */
377 0xffff, /* dst_mask */
378 FALSE
), /* pcrel_offset */
380 /* An absolute 16 bit branch; the lower two bits must be zero.
381 FIXME: we don't check that, we just clear them. */
382 HOWTO (R_PPC64_ADDR14
, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 FALSE
, /* pc_relative */
388 complain_overflow_signed
, /* complain_on_overflow */
389 ppc64_elf_branch_reloc
, /* special_function */
390 "R_PPC64_ADDR14", /* name */
391 FALSE
, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 FALSE
), /* pcrel_offset */
396 /* An absolute 16 bit branch, for which bit 10 should be set to
397 indicate that the branch is expected to be taken. The lower two
398 bits must be zero. */
399 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 FALSE
, /* pc_relative */
405 complain_overflow_signed
, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc
, /* special_function */
407 "R_PPC64_ADDR14_BRTAKEN",/* name */
408 FALSE
, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 FALSE
), /* pcrel_offset */
413 /* An absolute 16 bit branch, for which bit 10 should be set to
414 indicate that the branch is not expected to be taken. The lower
415 two bits must be zero. */
416 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE
, /* pc_relative */
422 complain_overflow_signed
, /* complain_on_overflow */
423 ppc64_elf_brtaken_reloc
, /* special_function */
424 "R_PPC64_ADDR14_BRNTAKEN",/* name */
425 FALSE
, /* partial_inplace */
427 0x0000fffc, /* dst_mask */
428 FALSE
), /* pcrel_offset */
430 /* A relative 26 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL24
, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE
, /* pc_relative */
437 complain_overflow_signed
, /* complain_on_overflow */
438 ppc64_elf_branch_reloc
, /* special_function */
439 "R_PPC64_REL24", /* name */
440 FALSE
, /* partial_inplace */
442 0x03fffffc, /* dst_mask */
443 TRUE
), /* pcrel_offset */
445 /* A relative 16 bit branch; the lower two bits must be zero. */
446 HOWTO (R_PPC64_REL14
, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE
, /* pc_relative */
452 complain_overflow_signed
, /* complain_on_overflow */
453 ppc64_elf_branch_reloc
, /* special_function */
454 "R_PPC64_REL14", /* name */
455 FALSE
, /* partial_inplace */
457 0x0000fffc, /* dst_mask */
458 TRUE
), /* pcrel_offset */
460 /* A relative 16 bit branch. Bit 10 should be set to indicate that
461 the branch is expected to be taken. The lower two bits must be
463 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
467 TRUE
, /* pc_relative */
469 complain_overflow_signed
, /* complain_on_overflow */
470 ppc64_elf_brtaken_reloc
, /* special_function */
471 "R_PPC64_REL14_BRTAKEN", /* name */
472 FALSE
, /* partial_inplace */
474 0x0000fffc, /* dst_mask */
475 TRUE
), /* pcrel_offset */
477 /* A relative 16 bit branch. Bit 10 should be set to indicate that
478 the branch is not expected to be taken. The lower two bits must
480 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 TRUE
, /* pc_relative */
486 complain_overflow_signed
, /* complain_on_overflow */
487 ppc64_elf_brtaken_reloc
, /* special_function */
488 "R_PPC64_REL14_BRNTAKEN",/* name */
489 FALSE
, /* partial_inplace */
491 0x0000fffc, /* dst_mask */
492 TRUE
), /* pcrel_offset */
494 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
496 HOWTO (R_PPC64_GOT16
, /* type */
498 1, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE
, /* pc_relative */
502 complain_overflow_signed
, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc
, /* special_function */
504 "R_PPC64_GOT16", /* name */
505 FALSE
, /* partial_inplace */
507 0xffff, /* dst_mask */
508 FALSE
), /* pcrel_offset */
510 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
512 HOWTO (R_PPC64_GOT16_LO
, /* type */
514 1, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE
, /* pc_relative */
518 complain_overflow_dont
, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc
, /* special_function */
520 "R_PPC64_GOT16_LO", /* name */
521 FALSE
, /* partial_inplace */
523 0xffff, /* dst_mask */
524 FALSE
), /* pcrel_offset */
526 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
528 HOWTO (R_PPC64_GOT16_HI
, /* type */
530 1, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE
, /* pc_relative */
534 complain_overflow_signed
,/* complain_on_overflow */
535 ppc64_elf_unhandled_reloc
, /* special_function */
536 "R_PPC64_GOT16_HI", /* name */
537 FALSE
, /* partial_inplace */
539 0xffff, /* dst_mask */
540 FALSE
), /* pcrel_offset */
542 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
544 HOWTO (R_PPC64_GOT16_HA
, /* type */
546 1, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE
, /* pc_relative */
550 complain_overflow_signed
,/* complain_on_overflow */
551 ppc64_elf_unhandled_reloc
, /* special_function */
552 "R_PPC64_GOT16_HA", /* name */
553 FALSE
, /* partial_inplace */
555 0xffff, /* dst_mask */
556 FALSE
), /* pcrel_offset */
558 /* This is used only by the dynamic linker. The symbol should exist
559 both in the object being run and in some shared library. The
560 dynamic linker copies the data addressed by the symbol from the
561 shared library into the object, because the object being
562 run has to have the data at some particular address. */
563 HOWTO (R_PPC64_COPY
, /* type */
565 0, /* this one is variable size */
567 FALSE
, /* pc_relative */
569 complain_overflow_dont
, /* complain_on_overflow */
570 ppc64_elf_unhandled_reloc
, /* special_function */
571 "R_PPC64_COPY", /* name */
572 FALSE
, /* partial_inplace */
575 FALSE
), /* pcrel_offset */
577 /* Like R_PPC64_ADDR64, but used when setting global offset table
579 HOWTO (R_PPC64_GLOB_DAT
, /* type */
581 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
583 FALSE
, /* pc_relative */
585 complain_overflow_dont
, /* complain_on_overflow */
586 ppc64_elf_unhandled_reloc
, /* special_function */
587 "R_PPC64_GLOB_DAT", /* name */
588 FALSE
, /* partial_inplace */
590 ONES (64), /* dst_mask */
591 FALSE
), /* pcrel_offset */
593 /* Created by the link editor. Marks a procedure linkage table
594 entry for a symbol. */
595 HOWTO (R_PPC64_JMP_SLOT
, /* type */
597 0, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE
, /* pc_relative */
601 complain_overflow_dont
, /* complain_on_overflow */
602 ppc64_elf_unhandled_reloc
, /* special_function */
603 "R_PPC64_JMP_SLOT", /* name */
604 FALSE
, /* partial_inplace */
607 FALSE
), /* pcrel_offset */
609 /* Used only by the dynamic linker. When the object is run, this
610 doubleword64 is set to the load address of the object, plus the
612 HOWTO (R_PPC64_RELATIVE
, /* type */
614 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
616 FALSE
, /* pc_relative */
618 complain_overflow_dont
, /* complain_on_overflow */
619 bfd_elf_generic_reloc
, /* special_function */
620 "R_PPC64_RELATIVE", /* name */
621 FALSE
, /* partial_inplace */
623 ONES (64), /* dst_mask */
624 FALSE
), /* pcrel_offset */
626 /* Like R_PPC64_ADDR32, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR32
, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE
, /* pc_relative */
633 complain_overflow_bitfield
, /* complain_on_overflow */
634 bfd_elf_generic_reloc
, /* special_function */
635 "R_PPC64_UADDR32", /* name */
636 FALSE
, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 FALSE
), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16, but may be unaligned. */
642 HOWTO (R_PPC64_UADDR16
, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE
, /* pc_relative */
648 complain_overflow_bitfield
, /* complain_on_overflow */
649 bfd_elf_generic_reloc
, /* special_function */
650 "R_PPC64_UADDR16", /* name */
651 FALSE
, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE
), /* pcrel_offset */
656 /* 32-bit PC relative. */
657 HOWTO (R_PPC64_REL32
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 TRUE
, /* pc_relative */
663 complain_overflow_signed
, /* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_PPC64_REL32", /* name */
666 FALSE
, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 /* 32-bit relocation to the symbol's procedure linkage table. */
672 HOWTO (R_PPC64_PLT32
, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE
, /* pc_relative */
678 complain_overflow_bitfield
, /* complain_on_overflow */
679 ppc64_elf_unhandled_reloc
, /* special_function */
680 "R_PPC64_PLT32", /* name */
681 FALSE
, /* partial_inplace */
683 0xffffffff, /* dst_mask */
684 FALSE
), /* pcrel_offset */
686 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
687 FIXME: R_PPC64_PLTREL32 not supported. */
688 HOWTO (R_PPC64_PLTREL32
, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 TRUE
, /* pc_relative */
694 complain_overflow_signed
, /* complain_on_overflow */
695 ppc64_elf_unhandled_reloc
, /* special_function */
696 "R_PPC64_PLTREL32", /* name */
697 FALSE
, /* partial_inplace */
699 0xffffffff, /* dst_mask */
700 TRUE
), /* pcrel_offset */
702 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
704 HOWTO (R_PPC64_PLT16_LO
, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE
, /* pc_relative */
710 complain_overflow_dont
, /* complain_on_overflow */
711 ppc64_elf_unhandled_reloc
, /* special_function */
712 "R_PPC64_PLT16_LO", /* name */
713 FALSE
, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE
), /* pcrel_offset */
718 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
720 HOWTO (R_PPC64_PLT16_HI
, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE
, /* pc_relative */
726 complain_overflow_signed
, /* complain_on_overflow */
727 ppc64_elf_unhandled_reloc
, /* special_function */
728 "R_PPC64_PLT16_HI", /* name */
729 FALSE
, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE
), /* pcrel_offset */
734 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
736 HOWTO (R_PPC64_PLT16_HA
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_signed
, /* complain_on_overflow */
743 ppc64_elf_unhandled_reloc
, /* special_function */
744 "R_PPC64_PLT16_HA", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* 16-bit section relative relocation. */
751 HOWTO (R_PPC64_SECTOFF
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_signed
, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc
, /* special_function */
759 "R_PPC64_SECTOFF", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* Like R_PPC64_SECTOFF, but no overflow warning. */
766 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_dont
, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc
, /* special_function */
774 "R_PPC64_SECTOFF_LO", /* name */
775 FALSE
, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE
), /* pcrel_offset */
780 /* 16-bit upper half section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE
, /* pc_relative */
787 complain_overflow_signed
, /* complain_on_overflow */
788 ppc64_elf_sectoff_reloc
, /* special_function */
789 "R_PPC64_SECTOFF_HI", /* name */
790 FALSE
, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE
), /* pcrel_offset */
795 /* 16-bit upper half adjusted section relative relocation. */
796 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE
, /* pc_relative */
802 complain_overflow_signed
, /* complain_on_overflow */
803 ppc64_elf_sectoff_ha_reloc
, /* special_function */
804 "R_PPC64_SECTOFF_HA", /* name */
805 FALSE
, /* partial_inplace */
807 0xffff, /* dst_mask */
808 FALSE
), /* pcrel_offset */
810 /* Like R_PPC64_REL24 without touching the two least significant bits. */
811 HOWTO (R_PPC64_REL30
, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_dont
, /* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_PPC64_REL30", /* name */
820 FALSE
, /* partial_inplace */
822 0xfffffffc, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
827 /* A standard 64-bit relocation. */
828 HOWTO (R_PPC64_ADDR64
, /* type */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
832 FALSE
, /* pc_relative */
834 complain_overflow_dont
, /* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_PPC64_ADDR64", /* name */
837 FALSE
, /* partial_inplace */
839 ONES (64), /* dst_mask */
840 FALSE
), /* pcrel_offset */
842 /* The bits 32-47 of an address. */
843 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE
, /* pc_relative */
849 complain_overflow_dont
, /* complain_on_overflow */
850 bfd_elf_generic_reloc
, /* special_function */
851 "R_PPC64_ADDR16_HIGHER", /* name */
852 FALSE
, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE
), /* pcrel_offset */
857 /* The bits 32-47 of an address, plus 1 if the contents of the low
858 16 bits, treated as a signed number, is negative. */
859 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE
, /* pc_relative */
865 complain_overflow_dont
, /* complain_on_overflow */
866 ppc64_elf_ha_reloc
, /* special_function */
867 "R_PPC64_ADDR16_HIGHERA", /* name */
868 FALSE
, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE
), /* pcrel_offset */
873 /* The bits 48-63 of an address. */
874 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE
, /* pc_relative */
880 complain_overflow_dont
, /* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 "R_PPC64_ADDR16_HIGHEST", /* name */
883 FALSE
, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE
), /* pcrel_offset */
888 /* The bits 48-63 of an address, plus 1 if the contents of the low
889 16 bits, treated as a signed number, is negative. */
890 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 ppc64_elf_ha_reloc
, /* special_function */
898 "R_PPC64_ADDR16_HIGHESTA", /* name */
899 FALSE
, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* Like ADDR64, but may be unaligned. */
905 HOWTO (R_PPC64_UADDR64
, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 FALSE
, /* pc_relative */
911 complain_overflow_dont
, /* complain_on_overflow */
912 bfd_elf_generic_reloc
, /* special_function */
913 "R_PPC64_UADDR64", /* name */
914 FALSE
, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 FALSE
), /* pcrel_offset */
919 /* 64-bit relative relocation. */
920 HOWTO (R_PPC64_REL64
, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 TRUE
, /* pc_relative */
926 complain_overflow_dont
, /* complain_on_overflow */
927 bfd_elf_generic_reloc
, /* special_function */
928 "R_PPC64_REL64", /* name */
929 FALSE
, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 TRUE
), /* pcrel_offset */
934 /* 64-bit relocation to the symbol's procedure linkage table. */
935 HOWTO (R_PPC64_PLT64
, /* type */
937 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 ppc64_elf_unhandled_reloc
, /* special_function */
943 "R_PPC64_PLT64", /* name */
944 FALSE
, /* partial_inplace */
946 ONES (64), /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* 64-bit PC relative relocation to the symbol's procedure linkage
951 /* FIXME: R_PPC64_PLTREL64 not supported. */
952 HOWTO (R_PPC64_PLTREL64
, /* type */
954 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
956 TRUE
, /* pc_relative */
958 complain_overflow_dont
, /* complain_on_overflow */
959 ppc64_elf_unhandled_reloc
, /* special_function */
960 "R_PPC64_PLTREL64", /* name */
961 FALSE
, /* partial_inplace */
963 ONES (64), /* dst_mask */
964 TRUE
), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation. */
968 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
969 HOWTO (R_PPC64_TOC16
, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE
, /* pc_relative */
975 complain_overflow_signed
, /* complain_on_overflow */
976 ppc64_elf_toc_reloc
, /* special_function */
977 "R_PPC64_TOC16", /* name */
978 FALSE
, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE
), /* pcrel_offset */
983 /* 16 bit TOC-relative relocation without overflow. */
985 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
986 HOWTO (R_PPC64_TOC16_LO
, /* type */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE
, /* pc_relative */
992 complain_overflow_dont
, /* complain_on_overflow */
993 ppc64_elf_toc_reloc
, /* special_function */
994 "R_PPC64_TOC16_LO", /* name */
995 FALSE
, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE
), /* pcrel_offset */
1000 /* 16 bit TOC-relative relocation, high 16 bits. */
1002 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1003 HOWTO (R_PPC64_TOC16_HI
, /* type */
1004 16, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE
, /* pc_relative */
1009 complain_overflow_signed
, /* complain_on_overflow */
1010 ppc64_elf_toc_reloc
, /* special_function */
1011 "R_PPC64_TOC16_HI", /* name */
1012 FALSE
, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE
), /* pcrel_offset */
1017 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1018 contents of the low 16 bits, treated as a signed number, is
1021 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1022 HOWTO (R_PPC64_TOC16_HA
, /* type */
1023 16, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 FALSE
, /* pc_relative */
1028 complain_overflow_signed
, /* complain_on_overflow */
1029 ppc64_elf_toc_ha_reloc
, /* special_function */
1030 "R_PPC64_TOC16_HA", /* name */
1031 FALSE
, /* partial_inplace */
1033 0xffff, /* dst_mask */
1034 FALSE
), /* pcrel_offset */
1036 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1038 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1039 HOWTO (R_PPC64_TOC
, /* type */
1041 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1043 FALSE
, /* pc_relative */
1045 complain_overflow_dont
, /* complain_on_overflow */
1046 ppc64_elf_toc64_reloc
, /* special_function */
1047 "R_PPC64_TOC", /* name */
1048 FALSE
, /* partial_inplace */
1050 ONES (64), /* dst_mask */
1051 FALSE
), /* pcrel_offset */
1053 /* Like R_PPC64_GOT16, but also informs the link editor that the
1054 value to relocate may (!) refer to a PLT entry which the link
1055 editor (a) may replace with the symbol value. If the link editor
1056 is unable to fully resolve the symbol, it may (b) create a PLT
1057 entry and store the address to the new PLT entry in the GOT.
1058 This permits lazy resolution of function symbols at run time.
1059 The link editor may also skip all of this and just (c) emit a
1060 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1061 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1062 HOWTO (R_PPC64_PLTGOT16
, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE
, /* pc_relative */
1068 complain_overflow_signed
, /* complain_on_overflow */
1069 ppc64_elf_unhandled_reloc
, /* special_function */
1070 "R_PPC64_PLTGOT16", /* name */
1071 FALSE
, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE
), /* pcrel_offset */
1076 /* Like R_PPC64_PLTGOT16, but without overflow. */
1077 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1078 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE
, /* pc_relative */
1084 complain_overflow_dont
, /* complain_on_overflow */
1085 ppc64_elf_unhandled_reloc
, /* special_function */
1086 "R_PPC64_PLTGOT16_LO", /* name */
1087 FALSE
, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE
), /* pcrel_offset */
1092 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1093 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1094 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE
, /* pc_relative */
1100 complain_overflow_signed
, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc
, /* special_function */
1102 "R_PPC64_PLTGOT16_HI", /* name */
1103 FALSE
, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE
), /* pcrel_offset */
1108 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1109 1 if the contents of the low 16 bits, treated as a signed number,
1111 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1112 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1113 16, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_signed
, /* complain_on_overflow */
1119 ppc64_elf_unhandled_reloc
, /* special_function */
1120 "R_PPC64_PLTGOT16_HA", /* name */
1121 FALSE
, /* partial_inplace */
1123 0xffff, /* dst_mask */
1124 FALSE
), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_signed
, /* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_PPC64_ADDR16_DS", /* name */
1136 FALSE
, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE
, /* pc_relative */
1148 complain_overflow_dont
,/* complain_on_overflow */
1149 bfd_elf_generic_reloc
, /* special_function */
1150 "R_PPC64_ADDR16_LO_DS",/* name */
1151 FALSE
, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE
), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_DS
, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE
, /* pc_relative */
1163 complain_overflow_signed
, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc
, /* special_function */
1165 "R_PPC64_GOT16_DS", /* name */
1166 FALSE
, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE
), /* pcrel_offset */
1171 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE
, /* pc_relative */
1178 complain_overflow_dont
, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc
, /* special_function */
1180 "R_PPC64_GOT16_LO_DS", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE
, /* pc_relative */
1193 complain_overflow_dont
, /* complain_on_overflow */
1194 ppc64_elf_unhandled_reloc
, /* special_function */
1195 "R_PPC64_PLT16_LO_DS", /* name */
1196 FALSE
, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE
), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_signed
, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc
, /* special_function */
1210 "R_PPC64_SECTOFF_DS", /* name */
1211 FALSE
, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE
, /* pc_relative */
1223 complain_overflow_dont
, /* complain_on_overflow */
1224 ppc64_elf_sectoff_reloc
, /* special_function */
1225 "R_PPC64_SECTOFF_LO_DS",/* name */
1226 FALSE
, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE
), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_DS
, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE
, /* pc_relative */
1238 complain_overflow_signed
, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc
, /* special_function */
1240 "R_PPC64_TOC16_DS", /* name */
1241 FALSE
, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE
), /* pcrel_offset */
1246 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1247 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1249 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE
, /* pc_relative */
1253 complain_overflow_dont
, /* complain_on_overflow */
1254 ppc64_elf_toc_reloc
, /* special_function */
1255 "R_PPC64_TOC16_LO_DS", /* name */
1256 FALSE
, /* partial_inplace */
1258 0xfffc, /* dst_mask */
1259 FALSE
), /* pcrel_offset */
1261 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1262 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1263 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE
, /* pc_relative */
1269 complain_overflow_signed
, /* complain_on_overflow */
1270 ppc64_elf_unhandled_reloc
, /* special_function */
1271 "R_PPC64_PLTGOT16_DS", /* name */
1272 FALSE
, /* partial_inplace */
1274 0xfffc, /* dst_mask */
1275 FALSE
), /* pcrel_offset */
1277 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1278 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1279 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc
, /* special_function */
1287 "R_PPC64_PLTGOT16_LO_DS",/* name */
1288 FALSE
, /* partial_inplace */
1290 0xfffc, /* dst_mask */
1291 FALSE
), /* pcrel_offset */
1293 /* Marker relocs for TLS. */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
, /* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_PPC64_TLS", /* name */
1303 FALSE
, /* partial_inplace */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_PPC64_TLSGD
,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
, /* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_PPC64_TLSGD", /* name */
1317 FALSE
, /* partial_inplace */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_PPC64_TLSLD
,
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_dont
, /* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_PPC64_TLSLD", /* name */
1331 FALSE
, /* partial_inplace */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_PPC64_TOCSAVE
,
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
, /* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_PPC64_TOCSAVE", /* name */
1345 FALSE
, /* partial_inplace */
1348 FALSE
), /* pcrel_offset */
1350 /* Computes the load module index of the load module that contains the
1351 definition of its TLS sym. */
1352 HOWTO (R_PPC64_DTPMOD64
,
1354 4, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_dont
, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc
, /* special_function */
1360 "R_PPC64_DTPMOD64", /* name */
1361 FALSE
, /* partial_inplace */
1363 ONES (64), /* dst_mask */
1364 FALSE
), /* pcrel_offset */
1366 /* Computes a dtv-relative displacement, the difference between the value
1367 of sym+add and the base address of the thread-local storage block that
1368 contains the definition of sym, minus 0x8000. */
1369 HOWTO (R_PPC64_DTPREL64
,
1371 4, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC64_DTPREL64", /* name */
1378 FALSE
, /* partial_inplace */
1380 ONES (64), /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* A 16 bit dtprel reloc. */
1384 HOWTO (R_PPC64_DTPREL16
,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_signed
, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc
, /* special_function */
1392 "R_PPC64_DTPREL16", /* name */
1393 FALSE
, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 /* Like DTPREL16, but no overflow. */
1399 HOWTO (R_PPC64_DTPREL16_LO
,
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE
, /* pc_relative */
1405 complain_overflow_dont
, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc
, /* special_function */
1407 "R_PPC64_DTPREL16_LO", /* name */
1408 FALSE
, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE
), /* pcrel_offset */
1413 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HI
,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE
, /* pc_relative */
1420 complain_overflow_signed
, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc
, /* special_function */
1422 "R_PPC64_DTPREL16_HI", /* name */
1423 FALSE
, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE
), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HA
,
1430 16, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_signed
, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc
, /* special_function */
1437 "R_PPC64_DTPREL16_HA", /* name */
1438 FALSE
, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE
, /* pc_relative */
1450 complain_overflow_dont
, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc
, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHER", /* name */
1453 FALSE
, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE
), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1460 32, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE
, /* pc_relative */
1465 complain_overflow_dont
, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc
, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHERA", /* name */
1468 FALSE
, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE
, /* pc_relative */
1480 complain_overflow_dont
, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc
, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHEST", /* name */
1483 FALSE
, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE
), /* pcrel_offset */
1488 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1489 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1490 48, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_dont
, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc
, /* special_function */
1497 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1498 FALSE
, /* partial_inplace */
1500 0xffff, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 /* Like DTPREL16, but for insns with a DS field. */
1504 HOWTO (R_PPC64_DTPREL16_DS
,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_signed
, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc
, /* special_function */
1512 "R_PPC64_DTPREL16_DS", /* name */
1513 FALSE
, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 /* Like DTPREL16_DS, but no overflow. */
1519 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1521 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE
, /* pc_relative */
1525 complain_overflow_dont
, /* complain_on_overflow */
1526 ppc64_elf_unhandled_reloc
, /* special_function */
1527 "R_PPC64_DTPREL16_LO_DS", /* name */
1528 FALSE
, /* partial_inplace */
1530 0xfffc, /* dst_mask */
1531 FALSE
), /* pcrel_offset */
1533 /* Computes a tp-relative displacement, the difference between the value of
1534 sym+add and the value of the thread pointer (r13). */
1535 HOWTO (R_PPC64_TPREL64
,
1537 4, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE
, /* pc_relative */
1541 complain_overflow_dont
, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc
, /* special_function */
1543 "R_PPC64_TPREL64", /* name */
1544 FALSE
, /* partial_inplace */
1546 ONES (64), /* dst_mask */
1547 FALSE
), /* pcrel_offset */
1549 /* A 16 bit tprel reloc. */
1550 HOWTO (R_PPC64_TPREL16
,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_signed
, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc
, /* special_function */
1558 "R_PPC64_TPREL16", /* name */
1559 FALSE
, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE
), /* pcrel_offset */
1564 /* Like TPREL16, but no overflow. */
1565 HOWTO (R_PPC64_TPREL16_LO
,
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_dont
, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc
, /* special_function */
1573 "R_PPC64_TPREL16_LO", /* name */
1574 FALSE
, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE
), /* pcrel_offset */
1579 /* Like TPREL16_LO, but next higher group of 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HI
,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE
, /* pc_relative */
1586 complain_overflow_signed
, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc
, /* special_function */
1588 "R_PPC64_TPREL16_HI", /* name */
1589 FALSE
, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE
), /* pcrel_offset */
1594 /* Like TPREL16_HI, but adjust for low 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HA
,
1596 16, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_signed
, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc
, /* special_function */
1603 "R_PPC64_TPREL16_HA", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1609 /* Like TPREL16_HI, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHER
,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE
, /* pc_relative */
1616 complain_overflow_dont
, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc
, /* special_function */
1618 "R_PPC64_TPREL16_HIGHER", /* name */
1619 FALSE
, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1626 32, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc
, /* special_function */
1633 "R_PPC64_TPREL16_HIGHERA", /* name */
1634 FALSE
, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE
, /* pc_relative */
1646 complain_overflow_dont
, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc
, /* special_function */
1648 "R_PPC64_TPREL16_HIGHEST", /* name */
1649 FALSE
, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE
), /* pcrel_offset */
1654 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1655 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1656 48, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_dont
, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc
, /* special_function */
1663 "R_PPC64_TPREL16_HIGHESTA", /* name */
1664 FALSE
, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* Like TPREL16, but for insns with a DS field. */
1670 HOWTO (R_PPC64_TPREL16_DS
,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_signed
, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc
, /* special_function */
1678 "R_PPC64_TPREL16_DS", /* name */
1679 FALSE
, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Like TPREL16_DS, but no overflow. */
1685 HOWTO (R_PPC64_TPREL16_LO_DS
,
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE
, /* pc_relative */
1691 complain_overflow_dont
, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc
, /* special_function */
1693 "R_PPC64_TPREL16_LO_DS", /* name */
1694 FALSE
, /* partial_inplace */
1696 0xfffc, /* dst_mask */
1697 FALSE
), /* pcrel_offset */
1699 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1700 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1701 to the first entry relative to the TOC base (r2). */
1702 HOWTO (R_PPC64_GOT_TLSGD16
,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE
, /* pc_relative */
1708 complain_overflow_signed
, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc
, /* special_function */
1710 "R_PPC64_GOT_TLSGD16", /* name */
1711 FALSE
, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE
), /* pcrel_offset */
1716 /* Like GOT_TLSGD16, but no overflow. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE
, /* pc_relative */
1723 complain_overflow_dont
, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc
, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_LO", /* name */
1726 FALSE
, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE
), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE
, /* pc_relative */
1738 complain_overflow_signed
, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc
, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HI", /* name */
1741 FALSE
, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE
), /* pcrel_offset */
1746 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1747 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE
, /* pc_relative */
1753 complain_overflow_signed
, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc
, /* special_function */
1755 "R_PPC64_GOT_TLSGD16_HA", /* name */
1756 FALSE
, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE
), /* pcrel_offset */
1761 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1762 with values (sym+add)@dtpmod and zero, and computes the offset to the
1763 first entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TLSLD16
,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_signed
, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc
, /* special_function */
1772 "R_PPC64_GOT_TLSLD16", /* name */
1773 FALSE
, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 /* Like GOT_TLSLD16, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_dont
, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_LO", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE
, /* pc_relative */
1800 complain_overflow_signed
, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc
, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HI", /* name */
1803 FALSE
, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE
), /* pcrel_offset */
1808 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE
, /* pc_relative */
1815 complain_overflow_signed
, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc
, /* special_function */
1817 "R_PPC64_GOT_TLSLD16_HA", /* name */
1818 FALSE
, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE
), /* pcrel_offset */
1823 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1824 the offset to the entry relative to the TOC base (r2). */
1825 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE
, /* pc_relative */
1831 complain_overflow_signed
, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc
, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_DS", /* name */
1834 FALSE
, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE
), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_DS, but no overflow. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE
, /* pc_relative */
1846 complain_overflow_dont
, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc
, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1849 FALSE
, /* partial_inplace */
1851 0xfffc, /* dst_mask */
1852 FALSE
), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE
, /* pc_relative */
1861 complain_overflow_signed
, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc
, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HI", /* name */
1864 FALSE
, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE
), /* pcrel_offset */
1869 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1870 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1871 16, /* rightshift */
1872 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE
, /* pc_relative */
1876 complain_overflow_signed
, /* complain_on_overflow */
1877 ppc64_elf_unhandled_reloc
, /* special_function */
1878 "R_PPC64_GOT_DTPREL16_HA", /* name */
1879 FALSE
, /* partial_inplace */
1881 0xffff, /* dst_mask */
1882 FALSE
), /* pcrel_offset */
1884 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1885 offset to the entry relative to the TOC base (r2). */
1886 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE
, /* pc_relative */
1892 complain_overflow_signed
, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc
, /* special_function */
1894 "R_PPC64_GOT_TPREL16_DS", /* name */
1895 FALSE
, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE
), /* pcrel_offset */
1900 /* Like GOT_TPREL16_DS, but no overflow. */
1901 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE
, /* pc_relative */
1907 complain_overflow_dont
, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc
, /* special_function */
1909 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1910 FALSE
, /* partial_inplace */
1912 0xfffc, /* dst_mask */
1913 FALSE
), /* pcrel_offset */
1915 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE
, /* pc_relative */
1922 complain_overflow_signed
, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc
, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HI", /* name */
1925 FALSE
, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE
), /* pcrel_offset */
1930 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1931 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1932 16, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE
, /* pc_relative */
1937 complain_overflow_signed
, /* complain_on_overflow */
1938 ppc64_elf_unhandled_reloc
, /* special_function */
1939 "R_PPC64_GOT_TPREL16_HA", /* name */
1940 FALSE
, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 FALSE
), /* pcrel_offset */
1945 HOWTO (R_PPC64_JMP_IREL
, /* type */
1947 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 FALSE
, /* pc_relative */
1951 complain_overflow_dont
, /* complain_on_overflow */
1952 ppc64_elf_unhandled_reloc
, /* special_function */
1953 "R_PPC64_JMP_IREL", /* name */
1954 FALSE
, /* partial_inplace */
1957 FALSE
), /* pcrel_offset */
1959 HOWTO (R_PPC64_IRELATIVE
, /* type */
1961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1963 FALSE
, /* pc_relative */
1965 complain_overflow_dont
, /* complain_on_overflow */
1966 bfd_elf_generic_reloc
, /* special_function */
1967 "R_PPC64_IRELATIVE", /* name */
1968 FALSE
, /* partial_inplace */
1970 ONES (64), /* dst_mask */
1971 FALSE
), /* pcrel_offset */
1973 /* A 16 bit relative relocation. */
1974 HOWTO (R_PPC64_REL16
, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE
, /* pc_relative */
1980 complain_overflow_signed
, /* complain_on_overflow */
1981 bfd_elf_generic_reloc
, /* special_function */
1982 "R_PPC64_REL16", /* name */
1983 FALSE
, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE
), /* pcrel_offset */
1988 /* A 16 bit relative relocation without overflow. */
1989 HOWTO (R_PPC64_REL16_LO
, /* type */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE
, /* pc_relative */
1995 complain_overflow_dont
,/* complain_on_overflow */
1996 bfd_elf_generic_reloc
, /* special_function */
1997 "R_PPC64_REL16_LO", /* name */
1998 FALSE
, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE
), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address. */
2004 HOWTO (R_PPC64_REL16_HI
, /* type */
2005 16, /* rightshift */
2006 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 TRUE
, /* pc_relative */
2010 complain_overflow_signed
, /* complain_on_overflow */
2011 bfd_elf_generic_reloc
, /* special_function */
2012 "R_PPC64_REL16_HI", /* name */
2013 FALSE
, /* partial_inplace */
2015 0xffff, /* dst_mask */
2016 TRUE
), /* pcrel_offset */
2018 /* The high order 16 bits of a relative address, plus 1 if the contents of
2019 the low 16 bits, treated as a signed number, is negative. */
2020 HOWTO (R_PPC64_REL16_HA
, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 TRUE
, /* pc_relative */
2026 complain_overflow_signed
, /* complain_on_overflow */
2027 ppc64_elf_ha_reloc
, /* special_function */
2028 "R_PPC64_REL16_HA", /* name */
2029 FALSE
, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 TRUE
), /* pcrel_offset */
2034 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2035 HOWTO (R_PPC64_REL16DX_HA
, /* type */
2036 16, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2039 TRUE
, /* pc_relative */
2041 complain_overflow_signed
, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc
, /* special_function */
2043 "R_PPC64_REL16DX_HA", /* name */
2044 FALSE
, /* partial_inplace */
2046 0x1fffc1, /* dst_mask */
2047 TRUE
), /* pcrel_offset */
2049 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2050 HOWTO (R_PPC64_16DX_HA
, /* type */
2051 16, /* rightshift */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE
, /* pc_relative */
2056 complain_overflow_signed
, /* complain_on_overflow */
2057 ppc64_elf_ha_reloc
, /* special_function */
2058 "R_PPC64_16DX_HA", /* name */
2059 FALSE
, /* partial_inplace */
2061 0x1fffc1, /* dst_mask */
2062 FALSE
), /* pcrel_offset */
2064 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2065 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE
, /* pc_relative */
2071 complain_overflow_dont
, /* complain_on_overflow */
2072 bfd_elf_generic_reloc
, /* special_function */
2073 "R_PPC64_ADDR16_HIGH", /* name */
2074 FALSE
, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE
), /* pcrel_offset */
2079 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2080 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE
, /* pc_relative */
2086 complain_overflow_dont
, /* complain_on_overflow */
2087 ppc64_elf_ha_reloc
, /* special_function */
2088 "R_PPC64_ADDR16_HIGHA", /* name */
2089 FALSE
, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE
), /* pcrel_offset */
2094 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2095 HOWTO (R_PPC64_DTPREL16_HIGH
,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE
, /* pc_relative */
2101 complain_overflow_dont
, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc
, /* special_function */
2103 "R_PPC64_DTPREL16_HIGH", /* name */
2104 FALSE
, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE
), /* pcrel_offset */
2109 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2110 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2111 16, /* rightshift */
2112 1, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE
, /* pc_relative */
2116 complain_overflow_dont
, /* complain_on_overflow */
2117 ppc64_elf_unhandled_reloc
, /* special_function */
2118 "R_PPC64_DTPREL16_HIGHA", /* name */
2119 FALSE
, /* partial_inplace */
2121 0xffff, /* dst_mask */
2122 FALSE
), /* pcrel_offset */
2124 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2125 HOWTO (R_PPC64_TPREL16_HIGH
,
2126 16, /* rightshift */
2127 1, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE
, /* pc_relative */
2131 complain_overflow_dont
, /* complain_on_overflow */
2132 ppc64_elf_unhandled_reloc
, /* special_function */
2133 "R_PPC64_TPREL16_HIGH", /* name */
2134 FALSE
, /* partial_inplace */
2136 0xffff, /* dst_mask */
2137 FALSE
), /* pcrel_offset */
2139 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2140 HOWTO (R_PPC64_TPREL16_HIGHA
,
2141 16, /* rightshift */
2142 1, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE
, /* pc_relative */
2146 complain_overflow_dont
, /* complain_on_overflow */
2147 ppc64_elf_unhandled_reloc
, /* special_function */
2148 "R_PPC64_TPREL16_HIGHA", /* name */
2149 FALSE
, /* partial_inplace */
2151 0xffff, /* dst_mask */
2152 FALSE
), /* pcrel_offset */
2154 /* Marker reloc on ELFv2 large-model function entry. */
2155 HOWTO (R_PPC64_ENTRY
,
2157 2, /* size (0 = byte, 1 = short, 2 = long) */
2159 FALSE
, /* pc_relative */
2161 complain_overflow_dont
, /* complain_on_overflow */
2162 bfd_elf_generic_reloc
, /* special_function */
2163 "R_PPC64_ENTRY", /* name */
2164 FALSE
, /* partial_inplace */
2167 FALSE
), /* pcrel_offset */
2169 /* Like ADDR64, but use local entry point of function. */
2170 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2172 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2174 FALSE
, /* pc_relative */
2176 complain_overflow_dont
, /* complain_on_overflow */
2177 bfd_elf_generic_reloc
, /* special_function */
2178 "R_PPC64_ADDR64_LOCAL", /* name */
2179 FALSE
, /* partial_inplace */
2181 ONES (64), /* dst_mask */
2182 FALSE
), /* pcrel_offset */
2184 /* GNU extension to record C++ vtable hierarchy. */
2185 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2187 0, /* size (0 = byte, 1 = short, 2 = long) */
2189 FALSE
, /* pc_relative */
2191 complain_overflow_dont
, /* complain_on_overflow */
2192 NULL
, /* special_function */
2193 "R_PPC64_GNU_VTINHERIT", /* name */
2194 FALSE
, /* partial_inplace */
2197 FALSE
), /* pcrel_offset */
2199 /* GNU extension to record C++ vtable member usage. */
2200 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2202 0, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE
, /* pc_relative */
2206 complain_overflow_dont
, /* complain_on_overflow */
2207 NULL
, /* special_function */
2208 "R_PPC64_GNU_VTENTRY", /* name */
2209 FALSE
, /* partial_inplace */
2212 FALSE
), /* pcrel_offset */
2216 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2220 ppc_howto_init (void)
2222 unsigned int i
, type
;
2224 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2226 type
= ppc64_elf_howto_raw
[i
].type
;
2227 BFD_ASSERT (type
< ARRAY_SIZE (ppc64_elf_howto_table
));
2228 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2232 static reloc_howto_type
*
2233 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2234 bfd_reloc_code_real_type code
)
2236 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2238 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2239 /* Initialize howto table if needed. */
2247 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2249 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2251 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2253 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2255 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2257 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2259 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2261 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2263 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2265 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2267 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2269 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2271 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2273 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2275 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2277 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2279 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2281 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2283 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2285 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2287 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2289 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2291 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2293 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2295 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2297 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2299 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2301 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2303 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2305 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2307 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2309 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2311 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2313 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2315 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2317 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2319 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2321 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2323 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2325 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2327 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2329 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2331 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2333 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2335 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2337 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2339 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2341 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2343 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2345 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2347 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2349 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2351 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2353 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2355 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2357 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2359 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2361 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2363 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2365 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2367 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2369 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2371 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2373 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2375 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2377 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2379 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2381 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2383 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2385 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2387 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2389 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2391 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2393 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2395 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2397 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2399 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2401 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2403 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2405 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2407 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2409 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2411 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2413 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2415 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2417 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2419 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2421 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2423 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2425 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2427 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2429 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2431 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2433 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2435 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2437 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2439 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2441 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2443 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2445 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2447 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2449 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2451 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2453 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2455 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2457 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2459 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2461 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2463 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2465 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2467 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2469 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC64_16DX_HA
;
2471 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC64_REL16DX_HA
;
2473 case BFD_RELOC_PPC64_ENTRY
: r
= R_PPC64_ENTRY
;
2475 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2477 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2479 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2483 return ppc64_elf_howto_table
[r
];
2486 static reloc_howto_type
*
2487 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2492 for (i
= 0; i
< ARRAY_SIZE (ppc64_elf_howto_raw
); i
++)
2493 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2494 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2495 return &ppc64_elf_howto_raw
[i
];
2500 /* Set the howto pointer for a PowerPC ELF reloc. */
2503 ppc64_elf_info_to_howto (bfd
*abfd
, arelent
*cache_ptr
,
2504 Elf_Internal_Rela
*dst
)
2508 /* Initialize howto table if needed. */
2509 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2512 type
= ELF64_R_TYPE (dst
->r_info
);
2513 if (type
>= ARRAY_SIZE (ppc64_elf_howto_table
))
2515 /* xgettext:c-format */
2516 _bfd_error_handler (_("%B: invalid relocation type %d"),
2518 type
= R_PPC64_NONE
;
2520 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2523 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2525 static bfd_reloc_status_type
2526 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2527 void *data
, asection
*input_section
,
2528 bfd
*output_bfd
, char **error_message
)
2530 enum elf_ppc64_reloc_type r_type
;
2532 bfd_size_type octets
;
2535 /* If this is a relocatable link (output_bfd test tells us), just
2536 call the generic function. Any adjustment will be done at final
2538 if (output_bfd
!= NULL
)
2539 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2540 input_section
, output_bfd
, error_message
);
2542 /* Adjust the addend for sign extension of the low 16 bits.
2543 We won't actually be using the low 16 bits, so trashing them
2545 reloc_entry
->addend
+= 0x8000;
2546 r_type
= reloc_entry
->howto
->type
;
2547 if (r_type
!= R_PPC64_REL16DX_HA
)
2548 return bfd_reloc_continue
;
2551 if (!bfd_is_com_section (symbol
->section
))
2552 value
= symbol
->value
;
2553 value
+= (reloc_entry
->addend
2554 + symbol
->section
->output_offset
2555 + symbol
->section
->output_section
->vma
);
2556 value
-= (reloc_entry
->address
2557 + input_section
->output_offset
2558 + input_section
->output_section
->vma
);
2559 value
= (bfd_signed_vma
) value
>> 16;
2561 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2562 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2564 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2565 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2566 if (value
+ 0x8000 > 0xffff)
2567 return bfd_reloc_overflow
;
2568 return bfd_reloc_ok
;
2571 static bfd_reloc_status_type
2572 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2573 void *data
, asection
*input_section
,
2574 bfd
*output_bfd
, char **error_message
)
2576 if (output_bfd
!= NULL
)
2577 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2578 input_section
, output_bfd
, error_message
);
2580 if (strcmp (symbol
->section
->name
, ".opd") == 0
2581 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2583 bfd_vma dest
= opd_entry_value (symbol
->section
,
2584 symbol
->value
+ reloc_entry
->addend
,
2586 if (dest
!= (bfd_vma
) -1)
2587 reloc_entry
->addend
= dest
- (symbol
->value
2588 + symbol
->section
->output_section
->vma
2589 + symbol
->section
->output_offset
);
2593 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2595 if (symbol
->section
->owner
!= abfd
2596 && symbol
->section
->owner
!= NULL
2597 && abiversion (symbol
->section
->owner
) >= 2)
2601 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2603 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2605 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2607 elfsym
= (elf_symbol_type
*) symdef
;
2613 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2615 return bfd_reloc_continue
;
2618 static bfd_reloc_status_type
2619 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2620 void *data
, asection
*input_section
,
2621 bfd
*output_bfd
, char **error_message
)
2624 enum elf_ppc64_reloc_type r_type
;
2625 bfd_size_type octets
;
2626 /* Assume 'at' branch hints. */
2627 bfd_boolean is_isa_v2
= TRUE
;
2629 /* If this is a relocatable link (output_bfd test tells us), just
2630 call the generic function. Any adjustment will be done at final
2632 if (output_bfd
!= NULL
)
2633 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2634 input_section
, output_bfd
, error_message
);
2636 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2637 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2638 insn
&= ~(0x01 << 21);
2639 r_type
= reloc_entry
->howto
->type
;
2640 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2641 || r_type
== R_PPC64_REL14_BRTAKEN
)
2642 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2646 /* Set 'a' bit. This is 0b00010 in BO field for branch
2647 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2648 for branch on CTR insns (BO == 1a00t or 1a01t). */
2649 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2651 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2661 if (!bfd_is_com_section (symbol
->section
))
2662 target
= symbol
->value
;
2663 target
+= symbol
->section
->output_section
->vma
;
2664 target
+= symbol
->section
->output_offset
;
2665 target
+= reloc_entry
->addend
;
2667 from
= (reloc_entry
->address
2668 + input_section
->output_offset
2669 + input_section
->output_section
->vma
);
2671 /* Invert 'y' bit if not the default. */
2672 if ((bfd_signed_vma
) (target
- from
) < 0)
2675 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2677 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2678 input_section
, output_bfd
, error_message
);
2681 static bfd_reloc_status_type
2682 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2683 void *data
, asection
*input_section
,
2684 bfd
*output_bfd
, char **error_message
)
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd
!= NULL
)
2690 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2691 input_section
, output_bfd
, error_message
);
2693 /* Subtract the symbol section base address. */
2694 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2695 return bfd_reloc_continue
;
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2700 void *data
, asection
*input_section
,
2701 bfd
*output_bfd
, char **error_message
)
2703 /* If this is a relocatable link (output_bfd test tells us), just
2704 call the generic function. Any adjustment will be done at final
2706 if (output_bfd
!= NULL
)
2707 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2708 input_section
, output_bfd
, error_message
);
2710 /* Subtract the symbol section base address. */
2711 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2713 /* Adjust the addend for sign extension of the low 16 bits. */
2714 reloc_entry
->addend
+= 0x8000;
2715 return bfd_reloc_continue
;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2720 void *data
, asection
*input_section
,
2721 bfd
*output_bfd
, char **error_message
)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd
!= NULL
)
2729 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2730 input_section
, output_bfd
, error_message
);
2732 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2734 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2736 /* Subtract the TOC base address. */
2737 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2738 return bfd_reloc_continue
;
2741 static bfd_reloc_status_type
2742 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2743 void *data
, asection
*input_section
,
2744 bfd
*output_bfd
, char **error_message
)
2748 /* If this is a relocatable link (output_bfd test tells us), just
2749 call the generic function. Any adjustment will be done at final
2751 if (output_bfd
!= NULL
)
2752 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2753 input_section
, output_bfd
, error_message
);
2755 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2757 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2759 /* Subtract the TOC base address. */
2760 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry
->addend
+= 0x8000;
2764 return bfd_reloc_continue
;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2769 void *data
, asection
*input_section
,
2770 bfd
*output_bfd
, char **error_message
)
2773 bfd_size_type octets
;
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd
!= NULL
)
2779 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2780 input_section
, output_bfd
, error_message
);
2782 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2784 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2786 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2787 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2788 return bfd_reloc_ok
;
2791 static bfd_reloc_status_type
2792 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2793 void *data
, asection
*input_section
,
2794 bfd
*output_bfd
, char **error_message
)
2796 /* If this is a relocatable link (output_bfd test tells us), just
2797 call the generic function. Any adjustment will be done at final
2799 if (output_bfd
!= NULL
)
2800 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2801 input_section
, output_bfd
, error_message
);
2803 if (error_message
!= NULL
)
2805 static char buf
[60];
2806 sprintf (buf
, "generic linker can't handle %s",
2807 reloc_entry
->howto
->name
);
2808 *error_message
= buf
;
2810 return bfd_reloc_dangerous
;
2813 /* Track GOT entries needed for a given symbol. We might need more
2814 than one got entry per symbol. */
2817 struct got_entry
*next
;
2819 /* The symbol addend that we'll be placing in the GOT. */
2822 /* Unlike other ELF targets, we use separate GOT entries for the same
2823 symbol referenced from different input files. This is to support
2824 automatic multiple TOC/GOT sections, where the TOC base can vary
2825 from one input file to another. After partitioning into TOC groups
2826 we merge entries within the group.
2828 Point to the BFD owning this GOT entry. */
2831 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2832 TLS_TPREL or TLS_DTPREL for tls entries. */
2833 unsigned char tls_type
;
2835 /* Non-zero if got.ent points to real entry. */
2836 unsigned char is_indirect
;
2838 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2841 bfd_signed_vma refcount
;
2843 struct got_entry
*ent
;
2847 /* The same for PLT. */
2850 struct plt_entry
*next
;
2856 bfd_signed_vma refcount
;
2861 struct ppc64_elf_obj_tdata
2863 struct elf_obj_tdata elf
;
2865 /* Shortcuts to dynamic linker sections. */
2869 /* Used during garbage collection. We attach global symbols defined
2870 on removed .opd entries to this section so that the sym is removed. */
2871 asection
*deleted_section
;
2873 /* TLS local dynamic got entry handling. Support for multiple GOT
2874 sections means we potentially need one of these for each input bfd. */
2875 struct got_entry tlsld_got
;
2878 /* A copy of relocs before they are modified for --emit-relocs. */
2879 Elf_Internal_Rela
*relocs
;
2881 /* Section contents. */
2885 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2886 the reloc to be in the range -32768 to 32767. */
2887 unsigned int has_small_toc_reloc
: 1;
2889 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2890 instruction not one we handle. */
2891 unsigned int unexpected_toc_insn
: 1;
2894 #define ppc64_elf_tdata(bfd) \
2895 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2897 #define ppc64_tlsld_got(bfd) \
2898 (&ppc64_elf_tdata (bfd)->tlsld_got)
2900 #define is_ppc64_elf(bfd) \
2901 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2902 && elf_object_id (bfd) == PPC64_ELF_DATA)
2904 /* Override the generic function because we store some extras. */
2907 ppc64_elf_mkobject (bfd
*abfd
)
2909 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2913 /* Fix bad default arch selected for a 64 bit input bfd when the
2914 default is 32 bit. Also select arch based on apuinfo. */
2917 ppc64_elf_object_p (bfd
*abfd
)
2919 if (!abfd
->arch_info
->the_default
)
2922 if (abfd
->arch_info
->bits_per_word
== 32)
2924 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2926 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2928 /* Relies on arch after 32 bit default being 64 bit default. */
2929 abfd
->arch_info
= abfd
->arch_info
->next
;
2930 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2933 return _bfd_elf_ppc_set_arch (abfd
);
2936 /* Support for core dump NOTE sections. */
2939 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2941 size_t offset
, size
;
2943 if (note
->descsz
!= 504)
2947 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2950 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2956 /* Make a ".reg/999" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2958 size
, note
->descpos
+ offset
);
2962 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2964 if (note
->descsz
!= 136)
2967 elf_tdata (abfd
)->core
->pid
2968 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2969 elf_tdata (abfd
)->core
->program
2970 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2971 elf_tdata (abfd
)->core
->command
2972 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2978 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2991 va_start (ap
, note_type
);
2992 memset (data
, 0, sizeof (data
));
2993 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2994 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2996 return elfcore_write_note (abfd
, buf
, bufsiz
,
2997 "CORE", note_type
, data
, sizeof (data
));
3008 va_start (ap
, note_type
);
3009 memset (data
, 0, 112);
3010 pid
= va_arg (ap
, long);
3011 bfd_put_32 (abfd
, pid
, data
+ 32);
3012 cursig
= va_arg (ap
, int);
3013 bfd_put_16 (abfd
, cursig
, data
+ 12);
3014 greg
= va_arg (ap
, const void *);
3015 memcpy (data
+ 112, greg
, 384);
3016 memset (data
+ 496, 0, 8);
3018 return elfcore_write_note (abfd
, buf
, bufsiz
,
3019 "CORE", note_type
, data
, sizeof (data
));
3024 /* Add extra PPC sections. */
3026 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
3028 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
3029 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3030 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3031 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3032 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
3033 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
3034 { NULL
, 0, 0, 0, 0 }
3037 enum _ppc64_sec_type
{
3043 struct _ppc64_elf_section_data
3045 struct bfd_elf_section_data elf
;
3049 /* An array with one entry for each opd function descriptor,
3050 and some spares since opd entries may be either 16 or 24 bytes. */
3051 #define OPD_NDX(OFF) ((OFF) >> 4)
3052 struct _opd_sec_data
3054 /* Points to the function code section for local opd entries. */
3055 asection
**func_sec
;
3057 /* After editing .opd, adjust references to opd local syms. */
3061 /* An array for toc sections, indexed by offset/8. */
3062 struct _toc_sec_data
3064 /* Specifies the relocation symbol index used at a given toc offset. */
3067 /* And the relocation addend. */
3072 enum _ppc64_sec_type sec_type
:2;
3074 /* Flag set when small branches are detected. Used to
3075 select suitable defaults for the stub group size. */
3076 unsigned int has_14bit_branch
:1;
3079 #define ppc64_elf_section_data(sec) \
3080 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3083 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
3085 if (!sec
->used_by_bfd
)
3087 struct _ppc64_elf_section_data
*sdata
;
3088 bfd_size_type amt
= sizeof (*sdata
);
3090 sdata
= bfd_zalloc (abfd
, amt
);
3093 sec
->used_by_bfd
= sdata
;
3096 return _bfd_elf_new_section_hook (abfd
, sec
);
3099 static struct _opd_sec_data
*
3100 get_opd_info (asection
* sec
)
3103 && ppc64_elf_section_data (sec
) != NULL
3104 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3105 return &ppc64_elf_section_data (sec
)->u
.opd
;
3109 /* Parameters for the qsort hook. */
3110 static bfd_boolean synthetic_relocatable
;
3111 static asection
*synthetic_opd
;
3113 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3116 compare_symbols (const void *ap
, const void *bp
)
3118 const asymbol
*a
= * (const asymbol
**) ap
;
3119 const asymbol
*b
= * (const asymbol
**) bp
;
3121 /* Section symbols first. */
3122 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3124 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3127 /* then .opd symbols. */
3128 if (synthetic_opd
!= NULL
)
3130 if (strcmp (a
->section
->name
, ".opd") == 0
3131 && strcmp (b
->section
->name
, ".opd") != 0)
3133 if (strcmp (a
->section
->name
, ".opd") != 0
3134 && strcmp (b
->section
->name
, ".opd") == 0)
3138 /* then other code symbols. */
3139 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3140 == (SEC_CODE
| SEC_ALLOC
)
3141 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3142 != (SEC_CODE
| SEC_ALLOC
))
3145 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3146 != (SEC_CODE
| SEC_ALLOC
)
3147 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3148 == (SEC_CODE
| SEC_ALLOC
))
3151 if (synthetic_relocatable
)
3153 if (a
->section
->id
< b
->section
->id
)
3156 if (a
->section
->id
> b
->section
->id
)
3160 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3163 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3166 /* For syms with the same value, prefer strong dynamic global function
3167 syms over other syms. */
3168 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3171 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3174 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3177 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3180 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3183 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3186 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3189 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3195 /* Search SYMS for a symbol of the given VALUE. */
3198 sym_exists_at (asymbol
**syms
, long lo
, long hi
, unsigned int id
, bfd_vma value
)
3202 if (id
== (unsigned) -1)
3206 mid
= (lo
+ hi
) >> 1;
3207 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3209 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3219 mid
= (lo
+ hi
) >> 1;
3220 if (syms
[mid
]->section
->id
< id
)
3222 else if (syms
[mid
]->section
->id
> id
)
3224 else if (syms
[mid
]->value
< value
)
3226 else if (syms
[mid
]->value
> value
)
3236 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3238 bfd_vma vma
= *(bfd_vma
*) ptr
;
3239 return ((section
->flags
& SEC_ALLOC
) != 0
3240 && section
->vma
<= vma
3241 && vma
< section
->vma
+ section
->size
);
3244 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3245 entry syms. Also generate @plt symbols for the glink branch table.
3246 Returns count of synthetic symbols in RET or -1 on error. */
3249 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3250 long static_count
, asymbol
**static_syms
,
3251 long dyn_count
, asymbol
**dyn_syms
,
3258 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3259 asection
*opd
= NULL
;
3260 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3262 int abi
= abiversion (abfd
);
3268 opd
= bfd_get_section_by_name (abfd
, ".opd");
3269 if (opd
== NULL
&& abi
== 1)
3273 symcount
= static_count
;
3275 symcount
+= dyn_count
;
3279 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3283 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3285 /* Use both symbol tables. */
3286 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3287 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3289 else if (!relocatable
&& static_count
== 0)
3290 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3292 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3294 synthetic_relocatable
= relocatable
;
3295 synthetic_opd
= opd
;
3296 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3298 if (!relocatable
&& symcount
> 1)
3301 /* Trim duplicate syms, since we may have merged the normal and
3302 dynamic symbols. Actually, we only care about syms that have
3303 different values, so trim any with the same value. */
3304 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3305 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3306 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3307 syms
[j
++] = syms
[i
];
3312 /* Note that here and in compare_symbols we can't compare opd and
3313 sym->section directly. With separate debug info files, the
3314 symbols will be extracted from the debug file while abfd passed
3315 to this function is the real binary. */
3316 if (opd
!= NULL
&& strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3320 for (; i
< symcount
; ++i
)
3321 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3322 != (SEC_CODE
| SEC_ALLOC
))
3323 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3327 for (; i
< symcount
; ++i
)
3328 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3333 for (; i
< symcount
; ++i
)
3334 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3338 for (; i
< symcount
; ++i
)
3339 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3340 != (SEC_CODE
| SEC_ALLOC
))
3348 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3353 if (opdsymend
== secsymend
)
3356 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3357 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3361 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3368 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3372 while (r
< opd
->relocation
+ relcount
3373 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3376 if (r
== opd
->relocation
+ relcount
)
3379 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3382 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3385 sym
= *r
->sym_ptr_ptr
;
3386 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3387 sym
->section
->id
, sym
->value
+ r
->addend
))
3390 size
+= sizeof (asymbol
);
3391 size
+= strlen (syms
[i
]->name
) + 2;
3397 s
= *ret
= bfd_malloc (size
);
3404 names
= (char *) (s
+ count
);
3406 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3410 while (r
< opd
->relocation
+ relcount
3411 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3414 if (r
== opd
->relocation
+ relcount
)
3417 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3420 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3423 sym
= *r
->sym_ptr_ptr
;
3424 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3425 sym
->section
->id
, sym
->value
+ r
->addend
))
3430 s
->flags
|= BSF_SYNTHETIC
;
3431 s
->section
= sym
->section
;
3432 s
->value
= sym
->value
+ r
->addend
;
3435 len
= strlen (syms
[i
]->name
);
3436 memcpy (names
, syms
[i
]->name
, len
+ 1);
3438 /* Have udata.p point back to the original symbol this
3439 synthetic symbol was derived from. */
3440 s
->udata
.p
= syms
[i
];
3447 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3448 bfd_byte
*contents
= NULL
;
3451 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3452 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3455 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3457 free_contents_and_exit_err
:
3459 free_contents_and_exit
:
3466 for (i
= secsymend
; i
< opdsymend
; ++i
)
3470 /* Ignore bogus symbols. */
3471 if (syms
[i
]->value
> opd
->size
- 8)
3474 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3475 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3478 size
+= sizeof (asymbol
);
3479 size
+= strlen (syms
[i
]->name
) + 2;
3483 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3485 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3487 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3489 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3491 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3492 goto free_contents_and_exit_err
;
3494 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3495 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3498 extdynend
= extdyn
+ dynamic
->size
;
3499 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3501 Elf_Internal_Dyn dyn
;
3502 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3504 if (dyn
.d_tag
== DT_NULL
)
3507 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3509 /* The first glink stub starts at offset 32; see
3510 comment in ppc64_elf_finish_dynamic_sections. */
3511 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3512 /* The .glink section usually does not survive the final
3513 link; search for the section (usually .text) where the
3514 glink stubs now reside. */
3515 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3526 /* Determine __glink trampoline by reading the relative branch
3527 from the first glink stub. */
3529 unsigned int off
= 0;
3531 while (bfd_get_section_contents (abfd
, glink
, buf
,
3532 glink_vma
+ off
- glink
->vma
, 4))
3534 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3536 if ((insn
& ~0x3fffffc) == 0)
3538 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3547 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3549 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3552 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3553 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3554 goto free_contents_and_exit_err
;
3556 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3557 size
+= plt_count
* sizeof (asymbol
);
3559 p
= relplt
->relocation
;
3560 for (i
= 0; i
< plt_count
; i
++, p
++)
3562 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3564 size
+= sizeof ("+0x") - 1 + 16;
3570 goto free_contents_and_exit
;
3571 s
= *ret
= bfd_malloc (size
);
3573 goto free_contents_and_exit_err
;
3575 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3577 for (i
= secsymend
; i
< opdsymend
; ++i
)
3581 if (syms
[i
]->value
> opd
->size
- 8)
3584 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3585 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3589 asection
*sec
= abfd
->sections
;
3596 long mid
= (lo
+ hi
) >> 1;
3597 if (syms
[mid
]->section
->vma
< ent
)
3599 else if (syms
[mid
]->section
->vma
> ent
)
3603 sec
= syms
[mid
]->section
;
3608 if (lo
>= hi
&& lo
> codesecsym
)
3609 sec
= syms
[lo
- 1]->section
;
3611 for (; sec
!= NULL
; sec
= sec
->next
)
3615 /* SEC_LOAD may not be set if SEC is from a separate debug
3617 if ((sec
->flags
& SEC_ALLOC
) == 0)
3619 if ((sec
->flags
& SEC_CODE
) != 0)
3622 s
->flags
|= BSF_SYNTHETIC
;
3623 s
->value
= ent
- s
->section
->vma
;
3626 len
= strlen (syms
[i
]->name
);
3627 memcpy (names
, syms
[i
]->name
, len
+ 1);
3629 /* Have udata.p point back to the original symbol this
3630 synthetic symbol was derived from. */
3631 s
->udata
.p
= syms
[i
];
3637 if (glink
!= NULL
&& relplt
!= NULL
)
3641 /* Add a symbol for the main glink trampoline. */
3642 memset (s
, 0, sizeof *s
);
3644 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3646 s
->value
= resolv_vma
- glink
->vma
;
3648 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3649 names
+= sizeof ("__glink_PLTresolve");
3654 /* FIXME: It would be very much nicer to put sym@plt on the
3655 stub rather than on the glink branch table entry. The
3656 objdump disassembler would then use a sensible symbol
3657 name on plt calls. The difficulty in doing so is
3658 a) finding the stubs, and,
3659 b) matching stubs against plt entries, and,
3660 c) there can be multiple stubs for a given plt entry.
3662 Solving (a) could be done by code scanning, but older
3663 ppc64 binaries used different stubs to current code.
3664 (b) is the tricky one since you need to known the toc
3665 pointer for at least one function that uses a pic stub to
3666 be able to calculate the plt address referenced.
3667 (c) means gdb would need to set multiple breakpoints (or
3668 find the glink branch itself) when setting breakpoints
3669 for pending shared library loads. */
3670 p
= relplt
->relocation
;
3671 for (i
= 0; i
< plt_count
; i
++, p
++)
3675 *s
= **p
->sym_ptr_ptr
;
3676 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3677 we are defining a symbol, ensure one of them is set. */
3678 if ((s
->flags
& BSF_LOCAL
) == 0)
3679 s
->flags
|= BSF_GLOBAL
;
3680 s
->flags
|= BSF_SYNTHETIC
;
3682 s
->value
= glink_vma
- glink
->vma
;
3685 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3686 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3690 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3691 names
+= sizeof ("+0x") - 1;
3692 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3693 names
+= strlen (names
);
3695 memcpy (names
, "@plt", sizeof ("@plt"));
3696 names
+= sizeof ("@plt");
3716 /* The following functions are specific to the ELF linker, while
3717 functions above are used generally. Those named ppc64_elf_* are
3718 called by the main ELF linker code. They appear in this file more
3719 or less in the order in which they are called. eg.
3720 ppc64_elf_check_relocs is called early in the link process,
3721 ppc64_elf_finish_dynamic_sections is one of the last functions
3724 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3725 functions have both a function code symbol and a function descriptor
3726 symbol. A call to foo in a relocatable object file looks like:
3733 The function definition in another object file might be:
3737 . .quad .TOC.@tocbase
3743 When the linker resolves the call during a static link, the branch
3744 unsurprisingly just goes to .foo and the .opd information is unused.
3745 If the function definition is in a shared library, things are a little
3746 different: The call goes via a plt call stub, the opd information gets
3747 copied to the plt, and the linker patches the nop.
3755 . std 2,40(1) # in practice, the call stub
3756 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3757 . addi 11,11,Lfoo@toc@l # this is the general idea
3765 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3767 The "reloc ()" notation is supposed to indicate that the linker emits
3768 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3771 What are the difficulties here? Well, firstly, the relocations
3772 examined by the linker in check_relocs are against the function code
3773 sym .foo, while the dynamic relocation in the plt is emitted against
3774 the function descriptor symbol, foo. Somewhere along the line, we need
3775 to carefully copy dynamic link information from one symbol to the other.
3776 Secondly, the generic part of the elf linker will make .foo a dynamic
3777 symbol as is normal for most other backends. We need foo dynamic
3778 instead, at least for an application final link. However, when
3779 creating a shared library containing foo, we need to have both symbols
3780 dynamic so that references to .foo are satisfied during the early
3781 stages of linking. Otherwise the linker might decide to pull in a
3782 definition from some other object, eg. a static library.
3784 Update: As of August 2004, we support a new convention. Function
3785 calls may use the function descriptor symbol, ie. "bl foo". This
3786 behaves exactly as "bl .foo". */
3788 /* Of those relocs that might be copied as dynamic relocs, this function
3789 selects those that must be copied when linking a shared library,
3790 even when the symbol is local. */
3793 must_be_dyn_reloc (struct bfd_link_info
*info
,
3794 enum elf_ppc64_reloc_type r_type
)
3806 case R_PPC64_TPREL16
:
3807 case R_PPC64_TPREL16_LO
:
3808 case R_PPC64_TPREL16_HI
:
3809 case R_PPC64_TPREL16_HA
:
3810 case R_PPC64_TPREL16_DS
:
3811 case R_PPC64_TPREL16_LO_DS
:
3812 case R_PPC64_TPREL16_HIGH
:
3813 case R_PPC64_TPREL16_HIGHA
:
3814 case R_PPC64_TPREL16_HIGHER
:
3815 case R_PPC64_TPREL16_HIGHERA
:
3816 case R_PPC64_TPREL16_HIGHEST
:
3817 case R_PPC64_TPREL16_HIGHESTA
:
3818 case R_PPC64_TPREL64
:
3819 return !bfd_link_executable (info
);
3823 /* Whether an undefined weak symbol should resolve to its link-time
3824 value, even in PIC or PIE objects. */
3825 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3826 ((H)->root.type == bfd_link_hash_undefweak \
3827 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3828 || (INFO)->dynamic_undefined_weak == 0))
3830 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3831 copying dynamic variables from a shared lib into an app's dynbss
3832 section, and instead use a dynamic relocation to point into the
3833 shared lib. With code that gcc generates, it's vital that this be
3834 enabled; In the PowerPC64 ABI, the address of a function is actually
3835 the address of a function descriptor, which resides in the .opd
3836 section. gcc uses the descriptor directly rather than going via the
3837 GOT as some other ABI's do, which means that initialized function
3838 pointers must reference the descriptor. Thus, a function pointer
3839 initialized to the address of a function in a shared library will
3840 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3841 redefines the function descriptor symbol to point to the copy. This
3842 presents a problem as a plt entry for that function is also
3843 initialized from the function descriptor symbol and the copy reloc
3844 may not be initialized first. */
3845 #define ELIMINATE_COPY_RELOCS 1
3847 /* Section name for stubs is the associated section name plus this
3849 #define STUB_SUFFIX ".stub"
3852 ppc_stub_long_branch:
3853 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3854 destination, but a 24 bit branch in a stub section will reach.
3857 ppc_stub_plt_branch:
3858 Similar to the above, but a 24 bit branch in the stub section won't
3859 reach its destination.
3860 . addis %r11,%r2,xxx@toc@ha
3861 . ld %r12,xxx@toc@l(%r11)
3866 Used to call a function in a shared library. If it so happens that
3867 the plt entry referenced crosses a 64k boundary, then an extra
3868 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3870 . addis %r11,%r2,xxx@toc@ha
3871 . ld %r12,xxx+0@toc@l(%r11)
3873 . ld %r2,xxx+8@toc@l(%r11)
3874 . ld %r11,xxx+16@toc@l(%r11)
3877 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3878 code to adjust the value and save r2 to support multiple toc sections.
3879 A ppc_stub_long_branch with an r2 offset looks like:
3881 . addis %r2,%r2,off@ha
3882 . addi %r2,%r2,off@l
3885 A ppc_stub_plt_branch with an r2 offset looks like:
3887 . addis %r11,%r2,xxx@toc@ha
3888 . ld %r12,xxx@toc@l(%r11)
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3894 In cases where the "addis" instruction would add zero, the "addis" is
3895 omitted and following instructions modified slightly in some cases.
3898 enum ppc_stub_type
{
3900 ppc_stub_long_branch
,
3901 ppc_stub_long_branch_r2off
,
3902 ppc_stub_plt_branch
,
3903 ppc_stub_plt_branch_r2off
,
3905 ppc_stub_plt_call_r2save
,
3906 ppc_stub_global_entry
,
3910 /* Information on stub grouping. */
3913 /* The stub section. */
3915 /* This is the section to which stubs in the group will be attached. */
3918 struct map_stub
*next
;
3919 /* Whether to emit a copy of register save/restore functions in this
3922 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3923 or -1u if no such stub with bctrl exists. */
3924 unsigned int tls_get_addr_opt_bctrl
;
3927 struct ppc_stub_hash_entry
{
3929 /* Base hash table entry structure. */
3930 struct bfd_hash_entry root
;
3932 enum ppc_stub_type stub_type
;
3934 /* Group information. */
3935 struct map_stub
*group
;
3937 /* Offset within stub_sec of the beginning of this stub. */
3938 bfd_vma stub_offset
;
3940 /* Given the symbol's value and its section we can determine its final
3941 value when building the stubs (so the stub knows where to jump. */
3942 bfd_vma target_value
;
3943 asection
*target_section
;
3945 /* The symbol table entry, if any, that this was derived from. */
3946 struct ppc_link_hash_entry
*h
;
3947 struct plt_entry
*plt_ent
;
3949 /* Symbol st_other. */
3950 unsigned char other
;
3953 struct ppc_branch_hash_entry
{
3955 /* Base hash table entry structure. */
3956 struct bfd_hash_entry root
;
3958 /* Offset within branch lookup table. */
3959 unsigned int offset
;
3961 /* Generation marker. */
3965 /* Used to track dynamic relocations for local symbols. */
3966 struct ppc_dyn_relocs
3968 struct ppc_dyn_relocs
*next
;
3970 /* The input section of the reloc. */
3973 /* Total number of relocs copied for the input section. */
3974 unsigned int count
: 31;
3976 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3977 unsigned int ifunc
: 1;
3980 struct ppc_link_hash_entry
3982 struct elf_link_hash_entry elf
;
3985 /* A pointer to the most recently used stub hash entry against this
3987 struct ppc_stub_hash_entry
*stub_cache
;
3989 /* A pointer to the next symbol starting with a '.' */
3990 struct ppc_link_hash_entry
*next_dot_sym
;
3993 /* Track dynamic relocs copied for this symbol. */
3994 struct elf_dyn_relocs
*dyn_relocs
;
3996 /* Chain of aliases referring to a weakdef. */
3997 struct ppc_link_hash_entry
*weakref
;
3999 /* Link between function code and descriptor symbols. */
4000 struct ppc_link_hash_entry
*oh
;
4002 /* Flag function code and descriptor symbols. */
4003 unsigned int is_func
:1;
4004 unsigned int is_func_descriptor
:1;
4005 unsigned int fake
:1;
4007 /* Whether global opd/toc sym has been adjusted or not.
4008 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4009 should be set for all globals defined in any opd/toc section. */
4010 unsigned int adjust_done
:1;
4012 /* Set if this is an out-of-line register save/restore function,
4013 with non-standard calling convention. */
4014 unsigned int save_res
:1;
4016 /* Set if a duplicate symbol with non-zero localentry is detected,
4017 even when the duplicate symbol does not provide a definition. */
4018 unsigned int non_zero_localentry
:1;
4020 /* Contexts in which symbol is used in the GOT (or TOC).
4021 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4022 corresponding relocs are encountered during check_relocs.
4023 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4024 indicate the corresponding GOT entry type is not needed.
4025 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4026 a TPREL one. We use a separate flag rather than setting TPREL
4027 just for convenience in distinguishing the two cases. */
4028 #define TLS_GD 1 /* GD reloc. */
4029 #define TLS_LD 2 /* LD reloc. */
4030 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4031 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4032 #define TLS_TLS 16 /* Any TLS reloc. */
4033 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4034 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4035 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4036 unsigned char tls_mask
;
4039 /* ppc64 ELF linker hash table. */
4041 struct ppc_link_hash_table
4043 struct elf_link_hash_table elf
;
4045 /* The stub hash table. */
4046 struct bfd_hash_table stub_hash_table
;
4048 /* Another hash table for plt_branch stubs. */
4049 struct bfd_hash_table branch_hash_table
;
4051 /* Hash table for function prologue tocsave. */
4052 htab_t tocsave_htab
;
4054 /* Various options and other info passed from the linker. */
4055 struct ppc64_elf_params
*params
;
4057 /* The size of sec_info below. */
4058 unsigned int sec_info_arr_size
;
4060 /* Per-section array of extra section info. Done this way rather
4061 than as part of ppc64_elf_section_data so we have the info for
4062 non-ppc64 sections. */
4065 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4070 /* The section group that this section belongs to. */
4071 struct map_stub
*group
;
4072 /* A temp section list pointer. */
4077 /* Linked list of groups. */
4078 struct map_stub
*group
;
4080 /* Temp used when calculating TOC pointers. */
4083 asection
*toc_first_sec
;
4085 /* Used when adding symbols. */
4086 struct ppc_link_hash_entry
*dot_syms
;
4088 /* Shortcuts to get to dynamic linker sections. */
4093 asection
*glink_eh_frame
;
4095 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4096 struct ppc_link_hash_entry
*tls_get_addr
;
4097 struct ppc_link_hash_entry
*tls_get_addr_fd
;
4099 /* The size of reliplt used by got entry relocs. */
4100 bfd_size_type got_reli_size
;
4103 unsigned long stub_count
[ppc_stub_global_entry
];
4105 /* Number of stubs against global syms. */
4106 unsigned long stub_globals
;
4108 /* Set if we're linking code with function descriptors. */
4109 unsigned int opd_abi
:1;
4111 /* Support for multiple toc sections. */
4112 unsigned int do_multi_toc
:1;
4113 unsigned int multi_toc_needed
:1;
4114 unsigned int second_toc_pass
:1;
4115 unsigned int do_toc_opt
:1;
4118 unsigned int stub_error
:1;
4120 /* Whether func_desc_adjust needs to be run over symbols. */
4121 unsigned int need_func_desc_adj
:1;
4123 /* Whether there exist local gnu indirect function resolvers,
4124 referenced by dynamic relocations. */
4125 unsigned int local_ifunc_resolver
:1;
4126 unsigned int maybe_local_ifunc_resolver
:1;
4128 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4129 unsigned int has_plt_localentry0
:1;
4131 /* Incremented every time we size stubs. */
4132 unsigned int stub_iteration
;
4134 /* Small local sym cache. */
4135 struct sym_cache sym_cache
;
4138 /* Rename some of the generic section flags to better document how they
4141 /* Nonzero if this section has TLS related relocations. */
4142 #define has_tls_reloc sec_flg0
4144 /* Nonzero if this section has a call to __tls_get_addr. */
4145 #define has_tls_get_addr_call sec_flg1
4147 /* Nonzero if this section has any toc or got relocs. */
4148 #define has_toc_reloc sec_flg2
4150 /* Nonzero if this section has a call to another section that uses
4152 #define makes_toc_func_call sec_flg3
4154 /* Recursion protection when determining above flag. */
4155 #define call_check_in_progress sec_flg4
4156 #define call_check_done sec_flg5
4158 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4160 #define ppc_hash_table(p) \
4161 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4162 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4164 #define ppc_stub_hash_lookup(table, string, create, copy) \
4165 ((struct ppc_stub_hash_entry *) \
4166 bfd_hash_lookup ((table), (string), (create), (copy)))
4168 #define ppc_branch_hash_lookup(table, string, create, copy) \
4169 ((struct ppc_branch_hash_entry *) \
4170 bfd_hash_lookup ((table), (string), (create), (copy)))
4172 /* Create an entry in the stub hash table. */
4174 static struct bfd_hash_entry
*
4175 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4176 struct bfd_hash_table
*table
,
4179 /* Allocate the structure if it has not already been allocated by a
4183 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4188 /* Call the allocation method of the superclass. */
4189 entry
= bfd_hash_newfunc (entry
, table
, string
);
4192 struct ppc_stub_hash_entry
*eh
;
4194 /* Initialize the local fields. */
4195 eh
= (struct ppc_stub_hash_entry
*) entry
;
4196 eh
->stub_type
= ppc_stub_none
;
4198 eh
->stub_offset
= 0;
4199 eh
->target_value
= 0;
4200 eh
->target_section
= NULL
;
4209 /* Create an entry in the branch hash table. */
4211 static struct bfd_hash_entry
*
4212 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4213 struct bfd_hash_table
*table
,
4216 /* Allocate the structure if it has not already been allocated by a
4220 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4225 /* Call the allocation method of the superclass. */
4226 entry
= bfd_hash_newfunc (entry
, table
, string
);
4229 struct ppc_branch_hash_entry
*eh
;
4231 /* Initialize the local fields. */
4232 eh
= (struct ppc_branch_hash_entry
*) entry
;
4240 /* Create an entry in a ppc64 ELF linker hash table. */
4242 static struct bfd_hash_entry
*
4243 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4244 struct bfd_hash_table
*table
,
4247 /* Allocate the structure if it has not already been allocated by a
4251 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4256 /* Call the allocation method of the superclass. */
4257 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4260 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4262 memset (&eh
->u
.stub_cache
, 0,
4263 (sizeof (struct ppc_link_hash_entry
)
4264 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4266 /* When making function calls, old ABI code references function entry
4267 points (dot symbols), while new ABI code references the function
4268 descriptor symbol. We need to make any combination of reference and
4269 definition work together, without breaking archive linking.
4271 For a defined function "foo" and an undefined call to "bar":
4272 An old object defines "foo" and ".foo", references ".bar" (possibly
4274 A new object defines "foo" and references "bar".
4276 A new object thus has no problem with its undefined symbols being
4277 satisfied by definitions in an old object. On the other hand, the
4278 old object won't have ".bar" satisfied by a new object.
4280 Keep a list of newly added dot-symbols. */
4282 if (string
[0] == '.')
4284 struct ppc_link_hash_table
*htab
;
4286 htab
= (struct ppc_link_hash_table
*) table
;
4287 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4288 htab
->dot_syms
= eh
;
4295 struct tocsave_entry
{
4301 tocsave_htab_hash (const void *p
)
4303 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4304 return ((bfd_vma
) (intptr_t) e
->sec
^ e
->offset
) >> 3;
4308 tocsave_htab_eq (const void *p1
, const void *p2
)
4310 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4311 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4312 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4315 /* Destroy a ppc64 ELF linker hash table. */
4318 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4320 struct ppc_link_hash_table
*htab
;
4322 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4323 if (htab
->tocsave_htab
)
4324 htab_delete (htab
->tocsave_htab
);
4325 bfd_hash_table_free (&htab
->branch_hash_table
);
4326 bfd_hash_table_free (&htab
->stub_hash_table
);
4327 _bfd_elf_link_hash_table_free (obfd
);
4330 /* Create a ppc64 ELF linker hash table. */
4332 static struct bfd_link_hash_table
*
4333 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4335 struct ppc_link_hash_table
*htab
;
4336 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4338 htab
= bfd_zmalloc (amt
);
4342 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4343 sizeof (struct ppc_link_hash_entry
),
4350 /* Init the stub hash table too. */
4351 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4352 sizeof (struct ppc_stub_hash_entry
)))
4354 _bfd_elf_link_hash_table_free (abfd
);
4358 /* And the branch hash table. */
4359 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4360 sizeof (struct ppc_branch_hash_entry
)))
4362 bfd_hash_table_free (&htab
->stub_hash_table
);
4363 _bfd_elf_link_hash_table_free (abfd
);
4367 htab
->tocsave_htab
= htab_try_create (1024,
4371 if (htab
->tocsave_htab
== NULL
)
4373 ppc64_elf_link_hash_table_free (abfd
);
4376 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4378 /* Initializing two fields of the union is just cosmetic. We really
4379 only care about glist, but when compiled on a 32-bit host the
4380 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4381 debugger inspection of these fields look nicer. */
4382 htab
->elf
.init_got_refcount
.refcount
= 0;
4383 htab
->elf
.init_got_refcount
.glist
= NULL
;
4384 htab
->elf
.init_plt_refcount
.refcount
= 0;
4385 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4386 htab
->elf
.init_got_offset
.offset
= 0;
4387 htab
->elf
.init_got_offset
.glist
= NULL
;
4388 htab
->elf
.init_plt_offset
.offset
= 0;
4389 htab
->elf
.init_plt_offset
.glist
= NULL
;
4391 return &htab
->elf
.root
;
4394 /* Create sections for linker generated code. */
4397 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4399 struct ppc_link_hash_table
*htab
;
4402 htab
= ppc_hash_table (info
);
4404 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4405 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4406 if (htab
->params
->save_restore_funcs
)
4408 /* Create .sfpr for code to save and restore fp regs. */
4409 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4411 if (htab
->sfpr
== NULL
4412 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4416 if (bfd_link_relocatable (info
))
4419 /* Create .glink for lazy dynamic linking support. */
4420 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4422 if (htab
->glink
== NULL
4423 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4426 if (!info
->no_ld_generated_unwind_info
)
4428 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4429 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4430 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4433 if (htab
->glink_eh_frame
== NULL
4434 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4438 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4439 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4440 if (htab
->elf
.iplt
== NULL
4441 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4444 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4445 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4447 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4448 if (htab
->elf
.irelplt
== NULL
4449 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4452 /* Create branch lookup table for plt_branch stubs. */
4453 flags
= (SEC_ALLOC
| SEC_LOAD
4454 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4455 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4457 if (htab
->brlt
== NULL
4458 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4461 if (!bfd_link_pic (info
))
4464 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4465 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4466 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4469 if (htab
->relbrlt
== NULL
4470 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4476 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4479 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4480 struct ppc64_elf_params
*params
)
4482 struct ppc_link_hash_table
*htab
;
4484 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4486 /* Always hook our dynamic sections into the first bfd, which is the
4487 linker created stub bfd. This ensures that the GOT header is at
4488 the start of the output TOC section. */
4489 htab
= ppc_hash_table (info
);
4490 htab
->elf
.dynobj
= params
->stub_bfd
;
4491 htab
->params
= params
;
4493 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4496 /* Build a name for an entry in the stub hash table. */
4499 ppc_stub_name (const asection
*input_section
,
4500 const asection
*sym_sec
,
4501 const struct ppc_link_hash_entry
*h
,
4502 const Elf_Internal_Rela
*rel
)
4507 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4508 offsets from a sym as a branch target? In fact, we could
4509 probably assume the addend is always zero. */
4510 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4514 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4515 stub_name
= bfd_malloc (len
);
4516 if (stub_name
== NULL
)
4519 len
= sprintf (stub_name
, "%08x.%s+%x",
4520 input_section
->id
& 0xffffffff,
4521 h
->elf
.root
.root
.string
,
4522 (int) rel
->r_addend
& 0xffffffff);
4526 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4527 stub_name
= bfd_malloc (len
);
4528 if (stub_name
== NULL
)
4531 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4532 input_section
->id
& 0xffffffff,
4533 sym_sec
->id
& 0xffffffff,
4534 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4535 (int) rel
->r_addend
& 0xffffffff);
4537 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4538 stub_name
[len
- 2] = 0;
4542 /* Look up an entry in the stub hash. Stub entries are cached because
4543 creating the stub name takes a bit of time. */
4545 static struct ppc_stub_hash_entry
*
4546 ppc_get_stub_entry (const asection
*input_section
,
4547 const asection
*sym_sec
,
4548 struct ppc_link_hash_entry
*h
,
4549 const Elf_Internal_Rela
*rel
,
4550 struct ppc_link_hash_table
*htab
)
4552 struct ppc_stub_hash_entry
*stub_entry
;
4553 struct map_stub
*group
;
4555 /* If this input section is part of a group of sections sharing one
4556 stub section, then use the id of the first section in the group.
4557 Stub names need to include a section id, as there may well be
4558 more than one stub used to reach say, printf, and we need to
4559 distinguish between them. */
4560 group
= htab
->sec_info
[input_section
->id
].u
.group
;
4564 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4565 && h
->u
.stub_cache
->h
== h
4566 && h
->u
.stub_cache
->group
== group
)
4568 stub_entry
= h
->u
.stub_cache
;
4574 stub_name
= ppc_stub_name (group
->link_sec
, sym_sec
, h
, rel
);
4575 if (stub_name
== NULL
)
4578 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4579 stub_name
, FALSE
, FALSE
);
4581 h
->u
.stub_cache
= stub_entry
;
4589 /* Add a new stub entry to the stub hash. Not all fields of the new
4590 stub entry are initialised. */
4592 static struct ppc_stub_hash_entry
*
4593 ppc_add_stub (const char *stub_name
,
4595 struct bfd_link_info
*info
)
4597 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4598 struct map_stub
*group
;
4601 struct ppc_stub_hash_entry
*stub_entry
;
4603 group
= htab
->sec_info
[section
->id
].u
.group
;
4604 link_sec
= group
->link_sec
;
4605 stub_sec
= group
->stub_sec
;
4606 if (stub_sec
== NULL
)
4612 namelen
= strlen (link_sec
->name
);
4613 len
= namelen
+ sizeof (STUB_SUFFIX
);
4614 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4618 memcpy (s_name
, link_sec
->name
, namelen
);
4619 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4620 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4621 if (stub_sec
== NULL
)
4623 group
->stub_sec
= stub_sec
;
4626 /* Enter this entry into the linker stub hash table. */
4627 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4629 if (stub_entry
== NULL
)
4631 /* xgettext:c-format */
4632 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4633 section
->owner
, stub_name
);
4637 stub_entry
->group
= group
;
4638 stub_entry
->stub_offset
= 0;
4642 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4643 not already done. */
4646 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4648 asection
*got
, *relgot
;
4650 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4652 if (!is_ppc64_elf (abfd
))
4658 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4661 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4662 | SEC_LINKER_CREATED
);
4664 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4666 || !bfd_set_section_alignment (abfd
, got
, 3))
4669 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4670 flags
| SEC_READONLY
);
4672 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4675 ppc64_elf_tdata (abfd
)->got
= got
;
4676 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4680 /* Follow indirect and warning symbol links. */
4682 static inline struct bfd_link_hash_entry
*
4683 follow_link (struct bfd_link_hash_entry
*h
)
4685 while (h
->type
== bfd_link_hash_indirect
4686 || h
->type
== bfd_link_hash_warning
)
4691 static inline struct elf_link_hash_entry
*
4692 elf_follow_link (struct elf_link_hash_entry
*h
)
4694 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4697 static inline struct ppc_link_hash_entry
*
4698 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4700 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4703 /* Merge PLT info on FROM with that on TO. */
4706 move_plt_plist (struct ppc_link_hash_entry
*from
,
4707 struct ppc_link_hash_entry
*to
)
4709 if (from
->elf
.plt
.plist
!= NULL
)
4711 if (to
->elf
.plt
.plist
!= NULL
)
4713 struct plt_entry
**entp
;
4714 struct plt_entry
*ent
;
4716 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4718 struct plt_entry
*dent
;
4720 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4721 if (dent
->addend
== ent
->addend
)
4723 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4730 *entp
= to
->elf
.plt
.plist
;
4733 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4734 from
->elf
.plt
.plist
= NULL
;
4738 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4741 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4742 struct elf_link_hash_entry
*dir
,
4743 struct elf_link_hash_entry
*ind
)
4745 struct ppc_link_hash_entry
*edir
, *eind
;
4747 edir
= (struct ppc_link_hash_entry
*) dir
;
4748 eind
= (struct ppc_link_hash_entry
*) ind
;
4750 edir
->is_func
|= eind
->is_func
;
4751 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4752 edir
->tls_mask
|= eind
->tls_mask
;
4753 if (eind
->oh
!= NULL
)
4754 edir
->oh
= ppc_follow_link (eind
->oh
);
4756 /* If called to transfer flags for a weakdef during processing
4757 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4758 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4759 if (!(ELIMINATE_COPY_RELOCS
4760 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4761 && edir
->elf
.dynamic_adjusted
))
4762 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4764 if (edir
->elf
.versioned
!= versioned_hidden
)
4765 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4766 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4767 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4768 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4769 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4771 /* If we were called to copy over info for a weak sym, don't copy
4772 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4773 in order to simplify readonly_dynrelocs and save a field in the
4774 symbol hash entry, but that means dyn_relocs can't be used in any
4775 tests about a specific symbol, or affect other symbol flags which
4777 Chain weakdefs so we can get from the weakdef back to an alias.
4778 The list is circular so that we don't need to use u.weakdef as
4779 well as this list to look at all aliases. */
4780 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4782 struct ppc_link_hash_entry
*cur
, *add
, *next
;
4787 cur
= edir
->weakref
;
4792 /* We can be called twice for the same symbols.
4793 Don't make multiple loops. */
4797 } while (cur
!= edir
);
4799 next
= add
->weakref
;
4802 add
->weakref
= edir
->weakref
!= NULL
? edir
->weakref
: edir
;
4803 edir
->weakref
= add
;
4806 } while (add
!= NULL
&& add
!= eind
);
4810 /* Copy over any dynamic relocs we may have on the indirect sym. */
4811 if (eind
->dyn_relocs
!= NULL
)
4813 if (edir
->dyn_relocs
!= NULL
)
4815 struct elf_dyn_relocs
**pp
;
4816 struct elf_dyn_relocs
*p
;
4818 /* Add reloc counts against the indirect sym to the direct sym
4819 list. Merge any entries against the same section. */
4820 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4822 struct elf_dyn_relocs
*q
;
4824 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4825 if (q
->sec
== p
->sec
)
4827 q
->pc_count
+= p
->pc_count
;
4828 q
->count
+= p
->count
;
4835 *pp
= edir
->dyn_relocs
;
4838 edir
->dyn_relocs
= eind
->dyn_relocs
;
4839 eind
->dyn_relocs
= NULL
;
4842 /* Copy over got entries that we may have already seen to the
4843 symbol which just became indirect. */
4844 if (eind
->elf
.got
.glist
!= NULL
)
4846 if (edir
->elf
.got
.glist
!= NULL
)
4848 struct got_entry
**entp
;
4849 struct got_entry
*ent
;
4851 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4853 struct got_entry
*dent
;
4855 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4856 if (dent
->addend
== ent
->addend
4857 && dent
->owner
== ent
->owner
4858 && dent
->tls_type
== ent
->tls_type
)
4860 dent
->got
.refcount
+= ent
->got
.refcount
;
4867 *entp
= edir
->elf
.got
.glist
;
4870 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4871 eind
->elf
.got
.glist
= NULL
;
4874 /* And plt entries. */
4875 move_plt_plist (eind
, edir
);
4877 if (eind
->elf
.dynindx
!= -1)
4879 if (edir
->elf
.dynindx
!= -1)
4880 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4881 edir
->elf
.dynstr_index
);
4882 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4883 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4884 eind
->elf
.dynindx
= -1;
4885 eind
->elf
.dynstr_index
= 0;
4889 /* Find the function descriptor hash entry from the given function code
4890 hash entry FH. Link the entries via their OH fields. */
4892 static struct ppc_link_hash_entry
*
4893 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4895 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4899 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4901 fdh
= (struct ppc_link_hash_entry
*)
4902 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4906 fdh
->is_func_descriptor
= 1;
4912 fdh
= ppc_follow_link (fdh
);
4913 fdh
->is_func_descriptor
= 1;
4918 /* Make a fake function descriptor sym for the undefined code sym FH. */
4920 static struct ppc_link_hash_entry
*
4921 make_fdh (struct bfd_link_info
*info
,
4922 struct ppc_link_hash_entry
*fh
)
4924 bfd
*abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4925 struct bfd_link_hash_entry
*bh
= NULL
;
4926 struct ppc_link_hash_entry
*fdh
;
4927 flagword flags
= (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4931 if (!_bfd_generic_link_add_one_symbol (info
, abfd
,
4932 fh
->elf
.root
.root
.string
+ 1,
4933 flags
, bfd_und_section_ptr
, 0,
4934 NULL
, FALSE
, FALSE
, &bh
))
4937 fdh
= (struct ppc_link_hash_entry
*) bh
;
4938 fdh
->elf
.non_elf
= 0;
4940 fdh
->is_func_descriptor
= 1;
4947 /* Fix function descriptor symbols defined in .opd sections to be
4951 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4952 struct bfd_link_info
*info
,
4953 Elf_Internal_Sym
*isym
,
4955 flagword
*flags ATTRIBUTE_UNUSED
,
4959 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4960 && (ibfd
->flags
& DYNAMIC
) == 0
4961 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4962 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
4965 && strcmp ((*sec
)->name
, ".opd") == 0)
4969 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4970 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4971 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4973 /* If the symbol is a function defined in .opd, and the function
4974 code is in a discarded group, let it appear to be undefined. */
4975 if (!bfd_link_relocatable (info
)
4976 && (*sec
)->reloc_count
!= 0
4977 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4978 FALSE
) != (bfd_vma
) -1
4979 && discarded_section (code_sec
))
4981 *sec
= bfd_und_section_ptr
;
4982 isym
->st_shndx
= SHN_UNDEF
;
4985 else if (*sec
!= NULL
4986 && strcmp ((*sec
)->name
, ".toc") == 0
4987 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4989 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4991 htab
->params
->object_in_toc
= 1;
4994 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4996 if (abiversion (ibfd
) == 0)
4997 set_abiversion (ibfd
, 2);
4998 else if (abiversion (ibfd
) == 1)
5000 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
5001 " for ABI version 1\n"), name
);
5002 bfd_set_error (bfd_error_bad_value
);
5010 /* Merge non-visibility st_other attributes: local entry point. */
5013 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
5014 const Elf_Internal_Sym
*isym
,
5015 bfd_boolean definition
,
5016 bfd_boolean dynamic
)
5018 if (definition
&& (!dynamic
|| !h
->def_regular
))
5019 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
5020 | ELF_ST_VISIBILITY (h
->other
));
5023 /* Hook called on merging a symbol. We use this to clear "fake" since
5024 we now have a real symbol. */
5027 ppc64_elf_merge_symbol (struct elf_link_hash_entry
*h
,
5028 const Elf_Internal_Sym
*isym
,
5029 asection
**psec ATTRIBUTE_UNUSED
,
5030 bfd_boolean newdef ATTRIBUTE_UNUSED
,
5031 bfd_boolean olddef ATTRIBUTE_UNUSED
,
5032 bfd
*oldbfd ATTRIBUTE_UNUSED
,
5033 const asection
*oldsec ATTRIBUTE_UNUSED
)
5035 ((struct ppc_link_hash_entry
*) h
)->fake
= 0;
5036 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
5037 ((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
= 1;
5041 /* This function makes an old ABI object reference to ".bar" cause the
5042 inclusion of a new ABI object archive that defines "bar".
5043 NAME is a symbol defined in an archive. Return a symbol in the hash
5044 table that might be satisfied by the archive symbols. */
5046 static struct elf_link_hash_entry
*
5047 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
5048 struct bfd_link_info
*info
,
5051 struct elf_link_hash_entry
*h
;
5055 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
5057 /* Don't return this sym if it is a fake function descriptor
5058 created by add_symbol_adjust. */
5059 && !((struct ppc_link_hash_entry
*) h
)->fake
)
5065 len
= strlen (name
);
5066 dot_name
= bfd_alloc (abfd
, len
+ 2);
5067 if (dot_name
== NULL
)
5068 return (struct elf_link_hash_entry
*) 0 - 1;
5070 memcpy (dot_name
+ 1, name
, len
+ 1);
5071 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
5072 bfd_release (abfd
, dot_name
);
5076 /* This function satisfies all old ABI object references to ".bar" if a
5077 new ABI object defines "bar". Well, at least, undefined dot symbols
5078 are made weak. This stops later archive searches from including an
5079 object if we already have a function descriptor definition. It also
5080 prevents the linker complaining about undefined symbols.
5081 We also check and correct mismatched symbol visibility here. The
5082 most restrictive visibility of the function descriptor and the
5083 function entry symbol is used. */
5086 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
5088 struct ppc_link_hash_table
*htab
;
5089 struct ppc_link_hash_entry
*fdh
;
5091 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5092 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5094 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
5097 if (eh
->elf
.root
.root
.string
[0] != '.')
5100 htab
= ppc_hash_table (info
);
5104 fdh
= lookup_fdh (eh
, htab
);
5106 && !bfd_link_relocatable (info
)
5107 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
5108 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5109 && eh
->elf
.ref_regular
)
5111 /* Make an undefined function descriptor sym, in order to
5112 pull in an --as-needed shared lib. Archives are handled
5114 fdh
= make_fdh (info
, eh
);
5121 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
5122 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
5124 /* Make both descriptor and entry symbol have the most
5125 constraining visibility of either symbol. */
5126 if (entry_vis
< descr_vis
)
5127 fdh
->elf
.other
+= entry_vis
- descr_vis
;
5128 else if (entry_vis
> descr_vis
)
5129 eh
->elf
.other
+= descr_vis
- entry_vis
;
5131 /* Propagate reference flags from entry symbol to function
5132 descriptor symbol. */
5133 fdh
->elf
.root
.non_ir_ref_regular
|= eh
->elf
.root
.non_ir_ref_regular
;
5134 fdh
->elf
.root
.non_ir_ref_dynamic
|= eh
->elf
.root
.non_ir_ref_dynamic
;
5135 fdh
->elf
.ref_regular
|= eh
->elf
.ref_regular
;
5136 fdh
->elf
.ref_regular_nonweak
|= eh
->elf
.ref_regular_nonweak
;
5138 if (!fdh
->elf
.forced_local
5139 && fdh
->elf
.dynindx
== -1
5140 && fdh
->elf
.versioned
!= versioned_hidden
5141 && (bfd_link_dll (info
)
5142 || fdh
->elf
.def_dynamic
5143 || fdh
->elf
.ref_dynamic
)
5144 && (eh
->elf
.ref_regular
5145 || eh
->elf
.def_regular
))
5147 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5155 /* Set up opd section info and abiversion for IBFD, and process list
5156 of dot-symbols we made in link_hash_newfunc. */
5159 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
5161 struct ppc_link_hash_table
*htab
;
5162 struct ppc_link_hash_entry
**p
, *eh
;
5163 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
5165 if (opd
!= NULL
&& opd
->size
!= 0)
5167 if (abiversion (ibfd
) == 0)
5168 set_abiversion (ibfd
, 1);
5169 else if (abiversion (ibfd
) >= 2)
5171 /* xgettext:c-format */
5172 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
5174 ibfd
, abiversion (ibfd
));
5175 bfd_set_error (bfd_error_bad_value
);
5179 if ((ibfd
->flags
& DYNAMIC
) == 0
5180 && (opd
->flags
& SEC_RELOC
) != 0
5181 && opd
->reloc_count
!= 0
5182 && !bfd_is_abs_section (opd
->output_section
))
5184 /* Garbage collection needs some extra help with .opd sections.
5185 We don't want to necessarily keep everything referenced by
5186 relocs in .opd, as that would keep all functions. Instead,
5187 if we reference an .opd symbol (a function descriptor), we
5188 want to keep the function code symbol's section. This is
5189 easy for global symbols, but for local syms we need to keep
5190 information about the associated function section. */
5192 asection
**opd_sym_map
;
5194 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5195 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5196 if (opd_sym_map
== NULL
)
5198 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5199 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5200 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5204 if (!is_ppc64_elf (info
->output_bfd
))
5206 htab
= ppc_hash_table (info
);
5210 /* For input files without an explicit abiversion in e_flags
5211 we should have flagged any with symbol st_other bits set
5212 as ELFv1 and above flagged those with .opd as ELFv2.
5213 Set the output abiversion if not yet set, and for any input
5214 still ambiguous, take its abiversion from the output.
5215 Differences in ABI are reported later. */
5216 if (abiversion (info
->output_bfd
) == 0)
5217 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5218 else if (abiversion (ibfd
) == 0)
5219 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5221 p
= &htab
->dot_syms
;
5222 while ((eh
= *p
) != NULL
)
5225 if (&eh
->elf
== htab
->elf
.hgot
)
5227 else if (htab
->elf
.hgot
== NULL
5228 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5229 htab
->elf
.hgot
= &eh
->elf
;
5230 else if (abiversion (ibfd
) <= 1)
5232 htab
->need_func_desc_adj
= 1;
5233 if (!add_symbol_adjust (eh
, info
))
5236 p
= &eh
->u
.next_dot_sym
;
5241 /* Undo hash table changes when an --as-needed input file is determined
5242 not to be needed. */
5245 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5246 struct bfd_link_info
*info
,
5247 enum notice_asneeded_action act
)
5249 if (act
== notice_not_needed
)
5251 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5256 htab
->dot_syms
= NULL
;
5258 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5261 /* If --just-symbols against a final linked binary, then assume we need
5262 toc adjusting stubs when calling functions defined there. */
5265 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5267 if ((sec
->flags
& SEC_CODE
) != 0
5268 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5269 && is_ppc64_elf (sec
->owner
))
5271 if (abiversion (sec
->owner
) >= 2
5272 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5273 sec
->has_toc_reloc
= 1;
5275 _bfd_elf_link_just_syms (sec
, info
);
5278 static struct plt_entry
**
5279 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5280 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5282 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5283 struct plt_entry
**local_plt
;
5284 unsigned char *local_got_tls_masks
;
5286 if (local_got_ents
== NULL
)
5288 bfd_size_type size
= symtab_hdr
->sh_info
;
5290 size
*= (sizeof (*local_got_ents
)
5291 + sizeof (*local_plt
)
5292 + sizeof (*local_got_tls_masks
));
5293 local_got_ents
= bfd_zalloc (abfd
, size
);
5294 if (local_got_ents
== NULL
)
5296 elf_local_got_ents (abfd
) = local_got_ents
;
5299 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5301 struct got_entry
*ent
;
5303 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5304 if (ent
->addend
== r_addend
5305 && ent
->owner
== abfd
5306 && ent
->tls_type
== tls_type
)
5310 bfd_size_type amt
= sizeof (*ent
);
5311 ent
= bfd_alloc (abfd
, amt
);
5314 ent
->next
= local_got_ents
[r_symndx
];
5315 ent
->addend
= r_addend
;
5317 ent
->tls_type
= tls_type
;
5318 ent
->is_indirect
= FALSE
;
5319 ent
->got
.refcount
= 0;
5320 local_got_ents
[r_symndx
] = ent
;
5322 ent
->got
.refcount
+= 1;
5325 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5326 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5327 local_got_tls_masks
[r_symndx
] |= tls_type
;
5329 return local_plt
+ r_symndx
;
5333 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5335 struct plt_entry
*ent
;
5337 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5338 if (ent
->addend
== addend
)
5342 bfd_size_type amt
= sizeof (*ent
);
5343 ent
= bfd_alloc (abfd
, amt
);
5347 ent
->addend
= addend
;
5348 ent
->plt
.refcount
= 0;
5351 ent
->plt
.refcount
+= 1;
5356 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5358 return (r_type
== R_PPC64_REL24
5359 || r_type
== R_PPC64_REL14
5360 || r_type
== R_PPC64_REL14_BRTAKEN
5361 || r_type
== R_PPC64_REL14_BRNTAKEN
5362 || r_type
== R_PPC64_ADDR24
5363 || r_type
== R_PPC64_ADDR14
5364 || r_type
== R_PPC64_ADDR14_BRTAKEN
5365 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5368 /* Look through the relocs for a section during the first phase, and
5369 calculate needed space in the global offset table, procedure
5370 linkage table, and dynamic reloc sections. */
5373 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5374 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5376 struct ppc_link_hash_table
*htab
;
5377 Elf_Internal_Shdr
*symtab_hdr
;
5378 struct elf_link_hash_entry
**sym_hashes
;
5379 const Elf_Internal_Rela
*rel
;
5380 const Elf_Internal_Rela
*rel_end
;
5382 asection
**opd_sym_map
;
5383 struct elf_link_hash_entry
*tga
, *dottga
;
5385 if (bfd_link_relocatable (info
))
5388 /* Don't do anything special with non-loaded, non-alloced sections.
5389 In particular, any relocs in such sections should not affect GOT
5390 and PLT reference counting (ie. we don't allow them to create GOT
5391 or PLT entries), there's no possibility or desire to optimize TLS
5392 relocs, and there's not much point in propagating relocs to shared
5393 libs that the dynamic linker won't relocate. */
5394 if ((sec
->flags
& SEC_ALLOC
) == 0)
5397 BFD_ASSERT (is_ppc64_elf (abfd
));
5399 htab
= ppc_hash_table (info
);
5403 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5404 FALSE
, FALSE
, TRUE
);
5405 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5406 FALSE
, FALSE
, TRUE
);
5407 symtab_hdr
= &elf_symtab_hdr (abfd
);
5408 sym_hashes
= elf_sym_hashes (abfd
);
5411 if (ppc64_elf_section_data (sec
) != NULL
5412 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5413 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5415 rel_end
= relocs
+ sec
->reloc_count
;
5416 for (rel
= relocs
; rel
< rel_end
; rel
++)
5418 unsigned long r_symndx
;
5419 struct elf_link_hash_entry
*h
;
5420 enum elf_ppc64_reloc_type r_type
;
5422 struct _ppc64_elf_section_data
*ppc64_sec
;
5423 struct plt_entry
**ifunc
, **plt_list
;
5425 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5426 if (r_symndx
< symtab_hdr
->sh_info
)
5430 struct ppc_link_hash_entry
*eh
;
5432 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5433 h
= elf_follow_link (h
);
5434 eh
= (struct ppc_link_hash_entry
*) h
;
5436 /* PR15323, ref flags aren't set for references in the same
5438 h
->root
.non_ir_ref_regular
= 1;
5439 if (eh
->is_func
&& eh
->oh
!= NULL
)
5440 eh
->oh
->elf
.root
.non_ir_ref_regular
= 1;
5442 if (h
== htab
->elf
.hgot
)
5443 sec
->has_toc_reloc
= 1;
5450 if (h
->type
== STT_GNU_IFUNC
)
5453 ifunc
= &h
->plt
.plist
;
5458 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5463 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5465 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5466 rel
->r_addend
, PLT_IFUNC
);
5472 r_type
= ELF64_R_TYPE (rel
->r_info
);
5477 /* These special tls relocs tie a call to __tls_get_addr with
5478 its parameter symbol. */
5481 case R_PPC64_GOT_TLSLD16
:
5482 case R_PPC64_GOT_TLSLD16_LO
:
5483 case R_PPC64_GOT_TLSLD16_HI
:
5484 case R_PPC64_GOT_TLSLD16_HA
:
5485 tls_type
= TLS_TLS
| TLS_LD
;
5488 case R_PPC64_GOT_TLSGD16
:
5489 case R_PPC64_GOT_TLSGD16_LO
:
5490 case R_PPC64_GOT_TLSGD16_HI
:
5491 case R_PPC64_GOT_TLSGD16_HA
:
5492 tls_type
= TLS_TLS
| TLS_GD
;
5495 case R_PPC64_GOT_TPREL16_DS
:
5496 case R_PPC64_GOT_TPREL16_LO_DS
:
5497 case R_PPC64_GOT_TPREL16_HI
:
5498 case R_PPC64_GOT_TPREL16_HA
:
5499 if (bfd_link_pic (info
))
5500 info
->flags
|= DF_STATIC_TLS
;
5501 tls_type
= TLS_TLS
| TLS_TPREL
;
5504 case R_PPC64_GOT_DTPREL16_DS
:
5505 case R_PPC64_GOT_DTPREL16_LO_DS
:
5506 case R_PPC64_GOT_DTPREL16_HI
:
5507 case R_PPC64_GOT_DTPREL16_HA
:
5508 tls_type
= TLS_TLS
| TLS_DTPREL
;
5510 sec
->has_tls_reloc
= 1;
5514 case R_PPC64_GOT16_DS
:
5515 case R_PPC64_GOT16_HA
:
5516 case R_PPC64_GOT16_HI
:
5517 case R_PPC64_GOT16_LO
:
5518 case R_PPC64_GOT16_LO_DS
:
5519 /* This symbol requires a global offset table entry. */
5520 sec
->has_toc_reloc
= 1;
5521 if (r_type
== R_PPC64_GOT_TLSLD16
5522 || r_type
== R_PPC64_GOT_TLSGD16
5523 || r_type
== R_PPC64_GOT_TPREL16_DS
5524 || r_type
== R_PPC64_GOT_DTPREL16_DS
5525 || r_type
== R_PPC64_GOT16
5526 || r_type
== R_PPC64_GOT16_DS
)
5528 htab
->do_multi_toc
= 1;
5529 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5532 if (ppc64_elf_tdata (abfd
)->got
== NULL
5533 && !create_got_section (abfd
, info
))
5538 struct ppc_link_hash_entry
*eh
;
5539 struct got_entry
*ent
;
5541 eh
= (struct ppc_link_hash_entry
*) h
;
5542 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5543 if (ent
->addend
== rel
->r_addend
5544 && ent
->owner
== abfd
5545 && ent
->tls_type
== tls_type
)
5549 bfd_size_type amt
= sizeof (*ent
);
5550 ent
= bfd_alloc (abfd
, amt
);
5553 ent
->next
= eh
->elf
.got
.glist
;
5554 ent
->addend
= rel
->r_addend
;
5556 ent
->tls_type
= tls_type
;
5557 ent
->is_indirect
= FALSE
;
5558 ent
->got
.refcount
= 0;
5559 eh
->elf
.got
.glist
= ent
;
5561 ent
->got
.refcount
+= 1;
5562 eh
->tls_mask
|= tls_type
;
5565 /* This is a global offset table entry for a local symbol. */
5566 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5567 rel
->r_addend
, tls_type
))
5570 /* We may also need a plt entry if the symbol turns out to be
5572 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
5574 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5579 case R_PPC64_PLT16_HA
:
5580 case R_PPC64_PLT16_HI
:
5581 case R_PPC64_PLT16_LO
:
5584 /* This symbol requires a procedure linkage table entry. */
5589 if (h
->root
.root
.string
[0] == '.'
5590 && h
->root
.root
.string
[1] != '\0')
5591 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5592 plt_list
= &h
->plt
.plist
;
5594 if (plt_list
== NULL
)
5596 /* It does not make sense to have a procedure linkage
5597 table entry for a non-ifunc local symbol. */
5598 info
->callbacks
->einfo
5599 /* xgettext:c-format */
5600 (_("%H: %s reloc against local symbol\n"),
5601 abfd
, sec
, rel
->r_offset
,
5602 ppc64_elf_howto_table
[r_type
]->name
);
5603 bfd_set_error (bfd_error_bad_value
);
5606 if (!update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5610 /* The following relocations don't need to propagate the
5611 relocation if linking a shared object since they are
5612 section relative. */
5613 case R_PPC64_SECTOFF
:
5614 case R_PPC64_SECTOFF_LO
:
5615 case R_PPC64_SECTOFF_HI
:
5616 case R_PPC64_SECTOFF_HA
:
5617 case R_PPC64_SECTOFF_DS
:
5618 case R_PPC64_SECTOFF_LO_DS
:
5619 case R_PPC64_DTPREL16
:
5620 case R_PPC64_DTPREL16_LO
:
5621 case R_PPC64_DTPREL16_HI
:
5622 case R_PPC64_DTPREL16_HA
:
5623 case R_PPC64_DTPREL16_DS
:
5624 case R_PPC64_DTPREL16_LO_DS
:
5625 case R_PPC64_DTPREL16_HIGH
:
5626 case R_PPC64_DTPREL16_HIGHA
:
5627 case R_PPC64_DTPREL16_HIGHER
:
5628 case R_PPC64_DTPREL16_HIGHERA
:
5629 case R_PPC64_DTPREL16_HIGHEST
:
5630 case R_PPC64_DTPREL16_HIGHESTA
:
5635 case R_PPC64_REL16_LO
:
5636 case R_PPC64_REL16_HI
:
5637 case R_PPC64_REL16_HA
:
5638 case R_PPC64_REL16DX_HA
:
5641 /* Not supported as a dynamic relocation. */
5642 case R_PPC64_ADDR64_LOCAL
:
5643 if (bfd_link_pic (info
))
5645 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5647 /* xgettext:c-format */
5648 info
->callbacks
->einfo (_("%H: %s reloc unsupported "
5649 "in shared libraries and PIEs.\n"),
5650 abfd
, sec
, rel
->r_offset
,
5651 ppc64_elf_howto_table
[r_type
]->name
);
5652 bfd_set_error (bfd_error_bad_value
);
5658 case R_PPC64_TOC16_DS
:
5659 htab
->do_multi_toc
= 1;
5660 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5662 case R_PPC64_TOC16_LO
:
5663 case R_PPC64_TOC16_HI
:
5664 case R_PPC64_TOC16_HA
:
5665 case R_PPC64_TOC16_LO_DS
:
5666 sec
->has_toc_reloc
= 1;
5673 /* This relocation describes the C++ object vtable hierarchy.
5674 Reconstruct it for later use during GC. */
5675 case R_PPC64_GNU_VTINHERIT
:
5676 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5680 /* This relocation describes which C++ vtable entries are actually
5681 used. Record for later use during GC. */
5682 case R_PPC64_GNU_VTENTRY
:
5683 BFD_ASSERT (h
!= NULL
);
5685 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5690 case R_PPC64_REL14_BRTAKEN
:
5691 case R_PPC64_REL14_BRNTAKEN
:
5693 asection
*dest
= NULL
;
5695 /* Heuristic: If jumping outside our section, chances are
5696 we are going to need a stub. */
5699 /* If the sym is weak it may be overridden later, so
5700 don't assume we know where a weak sym lives. */
5701 if (h
->root
.type
== bfd_link_hash_defined
)
5702 dest
= h
->root
.u
.def
.section
;
5706 Elf_Internal_Sym
*isym
;
5708 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5713 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5717 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5726 if (h
->root
.root
.string
[0] == '.'
5727 && h
->root
.root
.string
[1] != '\0')
5728 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5730 if (h
== tga
|| h
== dottga
)
5732 sec
->has_tls_reloc
= 1;
5734 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5735 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5736 /* We have a new-style __tls_get_addr call with
5740 /* Mark this section as having an old-style call. */
5741 sec
->has_tls_get_addr_call
= 1;
5743 plt_list
= &h
->plt
.plist
;
5746 /* We may need a .plt entry if the function this reloc
5747 refers to is in a shared lib. */
5749 && !update_plt_info (abfd
, plt_list
, rel
->r_addend
))
5753 case R_PPC64_ADDR14
:
5754 case R_PPC64_ADDR14_BRNTAKEN
:
5755 case R_PPC64_ADDR14_BRTAKEN
:
5756 case R_PPC64_ADDR24
:
5759 case R_PPC64_TPREL64
:
5760 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5761 if (bfd_link_pic (info
))
5762 info
->flags
|= DF_STATIC_TLS
;
5765 case R_PPC64_DTPMOD64
:
5766 if (rel
+ 1 < rel_end
5767 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5768 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5769 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5771 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5774 case R_PPC64_DTPREL64
:
5775 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5777 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5778 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5779 /* This is the second reloc of a dtpmod, dtprel pair.
5780 Don't mark with TLS_DTPREL. */
5784 sec
->has_tls_reloc
= 1;
5787 struct ppc_link_hash_entry
*eh
;
5788 eh
= (struct ppc_link_hash_entry
*) h
;
5789 eh
->tls_mask
|= tls_type
;
5792 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5793 rel
->r_addend
, tls_type
))
5796 ppc64_sec
= ppc64_elf_section_data (sec
);
5797 if (ppc64_sec
->sec_type
!= sec_toc
)
5801 /* One extra to simplify get_tls_mask. */
5802 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5803 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5804 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5806 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5807 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5808 if (ppc64_sec
->u
.toc
.add
== NULL
)
5810 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5811 ppc64_sec
->sec_type
= sec_toc
;
5813 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5814 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5815 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5817 /* Mark the second slot of a GD or LD entry.
5818 -1 to indicate GD and -2 to indicate LD. */
5819 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5820 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5821 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5822 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5825 case R_PPC64_TPREL16
:
5826 case R_PPC64_TPREL16_LO
:
5827 case R_PPC64_TPREL16_HI
:
5828 case R_PPC64_TPREL16_HA
:
5829 case R_PPC64_TPREL16_DS
:
5830 case R_PPC64_TPREL16_LO_DS
:
5831 case R_PPC64_TPREL16_HIGH
:
5832 case R_PPC64_TPREL16_HIGHA
:
5833 case R_PPC64_TPREL16_HIGHER
:
5834 case R_PPC64_TPREL16_HIGHERA
:
5835 case R_PPC64_TPREL16_HIGHEST
:
5836 case R_PPC64_TPREL16_HIGHESTA
:
5837 if (bfd_link_pic (info
))
5839 info
->flags
|= DF_STATIC_TLS
;
5844 case R_PPC64_ADDR64
:
5845 if (opd_sym_map
!= NULL
5846 && rel
+ 1 < rel_end
5847 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5850 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5854 Elf_Internal_Sym
*isym
;
5856 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5861 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5862 if (s
!= NULL
&& s
!= sec
)
5863 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5868 case R_PPC64_ADDR16
:
5869 case R_PPC64_ADDR16_DS
:
5870 case R_PPC64_ADDR16_HA
:
5871 case R_PPC64_ADDR16_HI
:
5872 case R_PPC64_ADDR16_HIGH
:
5873 case R_PPC64_ADDR16_HIGHA
:
5874 case R_PPC64_ADDR16_HIGHER
:
5875 case R_PPC64_ADDR16_HIGHERA
:
5876 case R_PPC64_ADDR16_HIGHEST
:
5877 case R_PPC64_ADDR16_HIGHESTA
:
5878 case R_PPC64_ADDR16_LO
:
5879 case R_PPC64_ADDR16_LO_DS
:
5880 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
5881 && rel
->r_addend
== 0)
5883 /* We may need a .plt entry if this reloc refers to a
5884 function in a shared lib. */
5885 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5887 h
->pointer_equality_needed
= 1;
5894 case R_PPC64_ADDR32
:
5895 case R_PPC64_UADDR16
:
5896 case R_PPC64_UADDR32
:
5897 case R_PPC64_UADDR64
:
5899 if (h
!= NULL
&& !bfd_link_pic (info
))
5900 /* We may need a copy reloc. */
5903 /* Don't propagate .opd relocs. */
5904 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5907 /* If we are creating a shared library, and this is a reloc
5908 against a global symbol, or a non PC relative reloc
5909 against a local symbol, then we need to copy the reloc
5910 into the shared library. However, if we are linking with
5911 -Bsymbolic, we do not need to copy a reloc against a
5912 global symbol which is defined in an object we are
5913 including in the link (i.e., DEF_REGULAR is set). At
5914 this point we have not seen all the input files, so it is
5915 possible that DEF_REGULAR is not set now but will be set
5916 later (it is never cleared). In case of a weak definition,
5917 DEF_REGULAR may be cleared later by a strong definition in
5918 a shared library. We account for that possibility below by
5919 storing information in the dyn_relocs field of the hash
5920 table entry. A similar situation occurs when creating
5921 shared libraries and symbol visibility changes render the
5924 If on the other hand, we are creating an executable, we
5925 may need to keep relocations for symbols satisfied by a
5926 dynamic library if we manage to avoid copy relocs for the
5929 if ((bfd_link_pic (info
)
5930 && (must_be_dyn_reloc (info
, r_type
)
5932 && (!SYMBOLIC_BIND (info
, h
)
5933 || h
->root
.type
== bfd_link_hash_defweak
5934 || !h
->def_regular
))))
5935 || (ELIMINATE_COPY_RELOCS
5936 && !bfd_link_pic (info
)
5938 && (h
->root
.type
== bfd_link_hash_defweak
5939 || !h
->def_regular
))
5940 || (!bfd_link_pic (info
)
5943 /* We must copy these reloc types into the output file.
5944 Create a reloc section in dynobj and make room for
5948 sreloc
= _bfd_elf_make_dynamic_reloc_section
5949 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5955 /* If this is a global symbol, we count the number of
5956 relocations we need for this symbol. */
5959 struct elf_dyn_relocs
*p
;
5960 struct elf_dyn_relocs
**head
;
5962 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5964 if (p
== NULL
|| p
->sec
!= sec
)
5966 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5976 if (!must_be_dyn_reloc (info
, r_type
))
5981 /* Track dynamic relocs needed for local syms too.
5982 We really need local syms available to do this
5984 struct ppc_dyn_relocs
*p
;
5985 struct ppc_dyn_relocs
**head
;
5986 bfd_boolean is_ifunc
;
5989 Elf_Internal_Sym
*isym
;
5991 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5996 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6000 vpp
= &elf_section_data (s
)->local_dynrel
;
6001 head
= (struct ppc_dyn_relocs
**) vpp
;
6002 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
6004 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
6006 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
6008 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
6014 p
->ifunc
= is_ifunc
;
6030 /* Merge backend specific data from an object file to the output
6031 object file when linking. */
6034 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6036 bfd
*obfd
= info
->output_bfd
;
6037 unsigned long iflags
, oflags
;
6039 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
6042 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
6045 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6048 iflags
= elf_elfheader (ibfd
)->e_flags
;
6049 oflags
= elf_elfheader (obfd
)->e_flags
;
6051 if (iflags
& ~EF_PPC64_ABI
)
6054 /* xgettext:c-format */
6055 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
6056 bfd_set_error (bfd_error_bad_value
);
6059 else if (iflags
!= oflags
&& iflags
!= 0)
6062 /* xgettext:c-format */
6063 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6064 ibfd
, iflags
, oflags
);
6065 bfd_set_error (bfd_error_bad_value
);
6069 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
6071 /* Merge Tag_compatibility attributes and any common GNU ones. */
6072 _bfd_elf_merge_object_attributes (ibfd
, info
);
6078 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6080 /* Print normal ELF private data. */
6081 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6083 if (elf_elfheader (abfd
)->e_flags
!= 0)
6087 fprintf (file
, _("private flags = 0x%lx:"),
6088 elf_elfheader (abfd
)->e_flags
);
6090 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
6091 fprintf (file
, _(" [abiv%ld]"),
6092 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
6099 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6100 of the code entry point, and its section, which must be in the same
6101 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6104 opd_entry_value (asection
*opd_sec
,
6106 asection
**code_sec
,
6108 bfd_boolean in_code_sec
)
6110 bfd
*opd_bfd
= opd_sec
->owner
;
6111 Elf_Internal_Rela
*relocs
;
6112 Elf_Internal_Rela
*lo
, *hi
, *look
;
6115 /* No relocs implies we are linking a --just-symbols object, or looking
6116 at a final linked executable with addr2line or somesuch. */
6117 if (opd_sec
->reloc_count
== 0)
6119 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
6121 if (contents
== NULL
)
6123 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
6124 return (bfd_vma
) -1;
6125 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
6128 /* PR 17512: file: 64b9dfbb. */
6129 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
6130 return (bfd_vma
) -1;
6132 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
6133 if (code_sec
!= NULL
)
6135 asection
*sec
, *likely
= NULL
;
6141 && val
< sec
->vma
+ sec
->size
)
6147 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6149 && (sec
->flags
& SEC_LOAD
) != 0
6150 && (sec
->flags
& SEC_ALLOC
) != 0)
6155 if (code_off
!= NULL
)
6156 *code_off
= val
- likely
->vma
;
6162 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
6164 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
6166 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
6167 /* PR 17512: file: df8e1fd6. */
6169 return (bfd_vma
) -1;
6171 /* Go find the opd reloc at the sym address. */
6173 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6177 look
= lo
+ (hi
- lo
) / 2;
6178 if (look
->r_offset
< offset
)
6180 else if (look
->r_offset
> offset
)
6184 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6186 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6187 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6189 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6190 asection
*sec
= NULL
;
6192 if (symndx
>= symtab_hdr
->sh_info
6193 && elf_sym_hashes (opd_bfd
) != NULL
)
6195 struct elf_link_hash_entry
**sym_hashes
;
6196 struct elf_link_hash_entry
*rh
;
6198 sym_hashes
= elf_sym_hashes (opd_bfd
);
6199 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6202 rh
= elf_follow_link (rh
);
6203 if (rh
->root
.type
!= bfd_link_hash_defined
6204 && rh
->root
.type
!= bfd_link_hash_defweak
)
6206 if (rh
->root
.u
.def
.section
->owner
== opd_bfd
)
6208 val
= rh
->root
.u
.def
.value
;
6209 sec
= rh
->root
.u
.def
.section
;
6216 Elf_Internal_Sym
*sym
;
6218 if (symndx
< symtab_hdr
->sh_info
)
6220 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6223 size_t symcnt
= symtab_hdr
->sh_info
;
6224 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6229 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6235 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6241 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6244 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6245 val
= sym
->st_value
;
6248 val
+= look
->r_addend
;
6249 if (code_off
!= NULL
)
6251 if (code_sec
!= NULL
)
6253 if (in_code_sec
&& *code_sec
!= sec
)
6258 if (sec
->output_section
!= NULL
)
6259 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6268 /* If the ELF symbol SYM might be a function in SEC, return the
6269 function size and set *CODE_OFF to the function's entry point,
6270 otherwise return zero. */
6272 static bfd_size_type
6273 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6278 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6279 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6283 if (!(sym
->flags
& BSF_SYNTHETIC
))
6284 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6286 if (strcmp (sym
->section
->name
, ".opd") == 0)
6288 struct _opd_sec_data
*opd
= get_opd_info (sym
->section
);
6289 bfd_vma symval
= sym
->value
;
6292 && opd
->adjust
!= NULL
6293 && elf_section_data (sym
->section
)->relocs
!= NULL
)
6295 /* opd_entry_value will use cached relocs that have been
6296 adjusted, but with raw symbols. That means both local
6297 and global symbols need adjusting. */
6298 long adjust
= opd
->adjust
[OPD_NDX (symval
)];
6304 if (opd_entry_value (sym
->section
, symval
,
6305 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6307 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6308 symbol. This size has nothing to do with the code size of the
6309 function, which is what we're supposed to return, but the
6310 code size isn't available without looking up the dot-sym.
6311 However, doing that would be a waste of time particularly
6312 since elf_find_function will look at the dot-sym anyway.
6313 Now, elf_find_function will keep the largest size of any
6314 function sym found at the code address of interest, so return
6315 1 here to avoid it incorrectly caching a larger function size
6316 for a small function. This does mean we return the wrong
6317 size for a new-ABI function of size 24, but all that does is
6318 disable caching for such functions. */
6324 if (sym
->section
!= sec
)
6326 *code_off
= sym
->value
;
6333 /* Return true if symbol is a strong function defined in an ELFv2
6334 object with st_other localentry bits of zero, ie. its local entry
6335 point coincides with its global entry point. */
6338 is_elfv2_localentry0 (struct elf_link_hash_entry
*h
)
6341 && h
->type
== STT_FUNC
6342 && h
->root
.type
== bfd_link_hash_defined
6343 && (STO_PPC64_LOCAL_MASK
& h
->other
) == 0
6344 && !((struct ppc_link_hash_entry
*) h
)->non_zero_localentry
6345 && is_ppc64_elf (h
->root
.u
.def
.section
->owner
)
6346 && abiversion (h
->root
.u
.def
.section
->owner
) >= 2);
6349 /* Return true if symbol is defined in a regular object file. */
6352 is_static_defined (struct elf_link_hash_entry
*h
)
6354 return ((h
->root
.type
== bfd_link_hash_defined
6355 || h
->root
.type
== bfd_link_hash_defweak
)
6356 && h
->root
.u
.def
.section
!= NULL
6357 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6360 /* If FDH is a function descriptor symbol, return the associated code
6361 entry symbol if it is defined. Return NULL otherwise. */
6363 static struct ppc_link_hash_entry
*
6364 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6366 if (fdh
->is_func_descriptor
)
6368 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6369 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6370 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6376 /* If FH is a function code entry symbol, return the associated
6377 function descriptor symbol if it is defined. Return NULL otherwise. */
6379 static struct ppc_link_hash_entry
*
6380 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6383 && fh
->oh
->is_func_descriptor
)
6385 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6386 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6387 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6393 static bfd_boolean
func_desc_adjust (struct elf_link_hash_entry
*, void *);
6395 /* Garbage collect sections, after first dealing with dot-symbols. */
6398 ppc64_elf_gc_sections (bfd
*abfd
, struct bfd_link_info
*info
)
6400 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6402 if (htab
!= NULL
&& htab
->need_func_desc_adj
)
6404 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6405 htab
->need_func_desc_adj
= 0;
6407 return bfd_elf_gc_sections (abfd
, info
);
6410 /* Mark all our entry sym sections, both opd and code section. */
6413 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6415 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6416 struct bfd_sym_chain
*sym
;
6421 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6423 struct ppc_link_hash_entry
*eh
, *fh
;
6426 eh
= (struct ppc_link_hash_entry
*)
6427 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6430 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6431 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6434 fh
= defined_code_entry (eh
);
6437 sec
= fh
->elf
.root
.u
.def
.section
;
6438 sec
->flags
|= SEC_KEEP
;
6440 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6441 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6442 eh
->elf
.root
.u
.def
.value
,
6443 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6444 sec
->flags
|= SEC_KEEP
;
6446 sec
= eh
->elf
.root
.u
.def
.section
;
6447 sec
->flags
|= SEC_KEEP
;
6451 /* Mark sections containing dynamically referenced symbols. When
6452 building shared libraries, we must assume that any visible symbol is
6456 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6458 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6459 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6460 struct ppc_link_hash_entry
*fdh
;
6461 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6463 /* Dynamic linking info is on the func descriptor sym. */
6464 fdh
= defined_func_desc (eh
);
6468 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6469 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6470 && (eh
->elf
.ref_dynamic
6471 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6472 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6473 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6474 && (!bfd_link_executable (info
)
6475 || info
->gc_keep_exported
6476 || info
->export_dynamic
6479 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6480 && (eh
->elf
.versioned
>= versioned
6481 || !bfd_hide_sym_by_version (info
->version_info
,
6482 eh
->elf
.root
.root
.string
)))))
6485 struct ppc_link_hash_entry
*fh
;
6487 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6489 /* Function descriptor syms cause the associated
6490 function code sym section to be marked. */
6491 fh
= defined_code_entry (eh
);
6494 code_sec
= fh
->elf
.root
.u
.def
.section
;
6495 code_sec
->flags
|= SEC_KEEP
;
6497 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6498 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6499 eh
->elf
.root
.u
.def
.value
,
6500 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6501 code_sec
->flags
|= SEC_KEEP
;
6507 /* Return the section that should be marked against GC for a given
6511 ppc64_elf_gc_mark_hook (asection
*sec
,
6512 struct bfd_link_info
*info
,
6513 Elf_Internal_Rela
*rel
,
6514 struct elf_link_hash_entry
*h
,
6515 Elf_Internal_Sym
*sym
)
6519 /* Syms return NULL if we're marking .opd, so we avoid marking all
6520 function sections, as all functions are referenced in .opd. */
6522 if (get_opd_info (sec
) != NULL
)
6527 enum elf_ppc64_reloc_type r_type
;
6528 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6530 r_type
= ELF64_R_TYPE (rel
->r_info
);
6533 case R_PPC64_GNU_VTINHERIT
:
6534 case R_PPC64_GNU_VTENTRY
:
6538 switch (h
->root
.type
)
6540 case bfd_link_hash_defined
:
6541 case bfd_link_hash_defweak
:
6542 eh
= (struct ppc_link_hash_entry
*) h
;
6543 fdh
= defined_func_desc (eh
);
6546 /* -mcall-aixdesc code references the dot-symbol on
6547 a call reloc. Mark the function descriptor too
6548 against garbage collection. */
6550 if (fdh
->elf
.u
.weakdef
!= NULL
)
6551 fdh
->elf
.u
.weakdef
->mark
= 1;
6555 /* Function descriptor syms cause the associated
6556 function code sym section to be marked. */
6557 fh
= defined_code_entry (eh
);
6560 /* They also mark their opd section. */
6561 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6563 rsec
= fh
->elf
.root
.u
.def
.section
;
6565 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6566 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6567 eh
->elf
.root
.u
.def
.value
,
6568 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6569 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6571 rsec
= h
->root
.u
.def
.section
;
6574 case bfd_link_hash_common
:
6575 rsec
= h
->root
.u
.c
.p
->section
;
6579 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6585 struct _opd_sec_data
*opd
;
6587 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6588 opd
= get_opd_info (rsec
);
6589 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6593 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6600 /* Update the .got, .plt. and dynamic reloc reference counts for the
6601 section being removed. */
6604 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6605 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6607 struct ppc_link_hash_table
*htab
;
6608 Elf_Internal_Shdr
*symtab_hdr
;
6609 struct elf_link_hash_entry
**sym_hashes
;
6610 struct got_entry
**local_got_ents
;
6611 const Elf_Internal_Rela
*rel
, *relend
;
6613 if (bfd_link_relocatable (info
))
6616 if ((sec
->flags
& SEC_ALLOC
) == 0)
6619 elf_section_data (sec
)->local_dynrel
= NULL
;
6621 htab
= ppc_hash_table (info
);
6625 symtab_hdr
= &elf_symtab_hdr (abfd
);
6626 sym_hashes
= elf_sym_hashes (abfd
);
6627 local_got_ents
= elf_local_got_ents (abfd
);
6629 relend
= relocs
+ sec
->reloc_count
;
6630 for (rel
= relocs
; rel
< relend
; rel
++)
6632 unsigned long r_symndx
;
6633 enum elf_ppc64_reloc_type r_type
;
6634 struct elf_link_hash_entry
*h
= NULL
;
6635 struct plt_entry
**plt_list
= NULL
;
6636 unsigned char tls_type
= 0;
6638 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6639 r_type
= ELF64_R_TYPE (rel
->r_info
);
6640 if (r_symndx
>= symtab_hdr
->sh_info
)
6642 struct ppc_link_hash_entry
*eh
;
6643 struct elf_dyn_relocs
**pp
;
6644 struct elf_dyn_relocs
*p
;
6646 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6647 h
= elf_follow_link (h
);
6648 eh
= (struct ppc_link_hash_entry
*) h
;
6650 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6653 /* Everything must go for SEC. */
6661 case R_PPC64_GOT_TLSLD16
:
6662 case R_PPC64_GOT_TLSLD16_LO
:
6663 case R_PPC64_GOT_TLSLD16_HI
:
6664 case R_PPC64_GOT_TLSLD16_HA
:
6665 tls_type
= TLS_TLS
| TLS_LD
;
6668 case R_PPC64_GOT_TLSGD16
:
6669 case R_PPC64_GOT_TLSGD16_LO
:
6670 case R_PPC64_GOT_TLSGD16_HI
:
6671 case R_PPC64_GOT_TLSGD16_HA
:
6672 tls_type
= TLS_TLS
| TLS_GD
;
6675 case R_PPC64_GOT_TPREL16_DS
:
6676 case R_PPC64_GOT_TPREL16_LO_DS
:
6677 case R_PPC64_GOT_TPREL16_HI
:
6678 case R_PPC64_GOT_TPREL16_HA
:
6679 tls_type
= TLS_TLS
| TLS_TPREL
;
6682 case R_PPC64_GOT_DTPREL16_DS
:
6683 case R_PPC64_GOT_DTPREL16_LO_DS
:
6684 case R_PPC64_GOT_DTPREL16_HI
:
6685 case R_PPC64_GOT_DTPREL16_HA
:
6686 tls_type
= TLS_TLS
| TLS_DTPREL
;
6690 case R_PPC64_GOT16_DS
:
6691 case R_PPC64_GOT16_HA
:
6692 case R_PPC64_GOT16_HI
:
6693 case R_PPC64_GOT16_LO
:
6694 case R_PPC64_GOT16_LO_DS
:
6697 struct got_entry
*ent
;
6702 ent
= local_got_ents
[r_symndx
];
6704 for (; ent
!= NULL
; ent
= ent
->next
)
6705 if (ent
->addend
== rel
->r_addend
6706 && ent
->owner
== abfd
6707 && ent
->tls_type
== tls_type
)
6711 if (ent
->got
.refcount
> 0)
6712 ent
->got
.refcount
-= 1;
6714 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1)
6715 plt_list
= &h
->plt
.plist
;
6718 case R_PPC64_PLT16_HA
:
6719 case R_PPC64_PLT16_HI
:
6720 case R_PPC64_PLT16_LO
:
6724 case R_PPC64_REL14_BRNTAKEN
:
6725 case R_PPC64_REL14_BRTAKEN
:
6728 plt_list
= &h
->plt
.plist
;
6729 else if (local_got_ents
!= NULL
)
6731 struct plt_entry
**local_plt
= (struct plt_entry
**)
6732 (local_got_ents
+ symtab_hdr
->sh_info
);
6733 unsigned char *local_got_tls_masks
= (unsigned char *)
6734 (local_plt
+ symtab_hdr
->sh_info
);
6735 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6736 plt_list
= local_plt
+ r_symndx
;
6740 case R_PPC64_ADDR64
:
6741 case R_PPC64_ADDR16
:
6742 case R_PPC64_ADDR16_DS
:
6743 case R_PPC64_ADDR16_HA
:
6744 case R_PPC64_ADDR16_HI
:
6745 case R_PPC64_ADDR16_HIGH
:
6746 case R_PPC64_ADDR16_HIGHA
:
6747 case R_PPC64_ADDR16_HIGHER
:
6748 case R_PPC64_ADDR16_HIGHERA
:
6749 case R_PPC64_ADDR16_HIGHEST
:
6750 case R_PPC64_ADDR16_HIGHESTA
:
6751 case R_PPC64_ADDR16_LO
:
6752 case R_PPC64_ADDR16_LO_DS
:
6753 if (h
!= NULL
&& !bfd_link_pic (info
) && abiversion (abfd
) != 1
6754 && rel
->r_addend
== 0)
6755 plt_list
= &h
->plt
.plist
;
6761 if (plt_list
!= NULL
)
6763 struct plt_entry
*ent
;
6765 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
6766 if (ent
->addend
== rel
->r_addend
)
6768 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6769 ent
->plt
.refcount
-= 1;
6775 /* The maximum size of .sfpr. */
6776 #define SFPR_MAX (218*4)
6778 struct sfpr_def_parms
6780 const char name
[12];
6781 unsigned char lo
, hi
;
6782 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6783 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6786 /* Auto-generate _save*, _rest* functions in .sfpr.
6787 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6791 sfpr_define (struct bfd_link_info
*info
,
6792 const struct sfpr_def_parms
*parm
,
6795 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6797 size_t len
= strlen (parm
->name
);
6798 bfd_boolean writing
= FALSE
;
6804 memcpy (sym
, parm
->name
, len
);
6807 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6809 struct ppc_link_hash_entry
*h
;
6811 sym
[len
+ 0] = i
/ 10 + '0';
6812 sym
[len
+ 1] = i
% 10 + '0';
6813 h
= (struct ppc_link_hash_entry
*)
6814 elf_link_hash_lookup (&htab
->elf
, sym
, writing
, TRUE
, TRUE
);
6815 if (stub_sec
!= NULL
)
6818 && h
->elf
.root
.type
== bfd_link_hash_defined
6819 && h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
6821 struct elf_link_hash_entry
*s
;
6823 sprintf (buf
, "%08x.%s", stub_sec
->id
& 0xffffffff, sym
);
6824 s
= elf_link_hash_lookup (&htab
->elf
, buf
, TRUE
, TRUE
, FALSE
);
6827 if (s
->root
.type
== bfd_link_hash_new
6828 || (s
->root
.type
= bfd_link_hash_defined
6829 && s
->root
.u
.def
.section
== stub_sec
))
6831 s
->root
.type
= bfd_link_hash_defined
;
6832 s
->root
.u
.def
.section
= stub_sec
;
6833 s
->root
.u
.def
.value
= (stub_sec
->size
6834 + h
->elf
.root
.u
.def
.value
);
6837 s
->ref_regular_nonweak
= 1;
6838 s
->forced_local
= 1;
6840 s
->root
.linker_def
= 1;
6848 if (!h
->elf
.def_regular
)
6850 h
->elf
.root
.type
= bfd_link_hash_defined
;
6851 h
->elf
.root
.u
.def
.section
= htab
->sfpr
;
6852 h
->elf
.root
.u
.def
.value
= htab
->sfpr
->size
;
6853 h
->elf
.type
= STT_FUNC
;
6854 h
->elf
.def_regular
= 1;
6856 _bfd_elf_link_hash_hide_symbol (info
, &h
->elf
, TRUE
);
6858 if (htab
->sfpr
->contents
== NULL
)
6860 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6861 if (htab
->sfpr
->contents
== NULL
)
6868 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6870 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6872 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6873 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6881 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6883 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6888 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6890 p
= savegpr0 (abfd
, p
, r
);
6891 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6893 bfd_put_32 (abfd
, BLR
, p
);
6898 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6900 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6905 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6907 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6909 p
= restgpr0 (abfd
, p
, r
);
6910 bfd_put_32 (abfd
, MTLR_R0
, p
);
6914 p
= restgpr0 (abfd
, p
, 30);
6915 p
= restgpr0 (abfd
, p
, 31);
6917 bfd_put_32 (abfd
, BLR
, p
);
6922 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6924 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6929 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6931 p
= savegpr1 (abfd
, p
, r
);
6932 bfd_put_32 (abfd
, BLR
, p
);
6937 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6939 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6944 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6946 p
= restgpr1 (abfd
, p
, r
);
6947 bfd_put_32 (abfd
, BLR
, p
);
6952 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6954 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6959 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6961 p
= savefpr (abfd
, p
, r
);
6962 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6964 bfd_put_32 (abfd
, BLR
, p
);
6969 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6971 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6976 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6978 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6980 p
= restfpr (abfd
, p
, r
);
6981 bfd_put_32 (abfd
, MTLR_R0
, p
);
6985 p
= restfpr (abfd
, p
, 30);
6986 p
= restfpr (abfd
, p
, 31);
6988 bfd_put_32 (abfd
, BLR
, p
);
6993 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6995 p
= savefpr (abfd
, p
, r
);
6996 bfd_put_32 (abfd
, BLR
, p
);
7001 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7003 p
= restfpr (abfd
, p
, r
);
7004 bfd_put_32 (abfd
, BLR
, p
);
7009 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
7011 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7013 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
7018 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7020 p
= savevr (abfd
, p
, r
);
7021 bfd_put_32 (abfd
, BLR
, p
);
7026 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
7028 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
7030 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
7035 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
7037 p
= restvr (abfd
, p
, r
);
7038 bfd_put_32 (abfd
, BLR
, p
);
7042 /* Called via elf_link_hash_traverse to transfer dynamic linking
7043 information on function code symbol entries to their corresponding
7044 function descriptor symbol entries. */
7047 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
7049 struct bfd_link_info
*info
;
7050 struct ppc_link_hash_table
*htab
;
7051 struct ppc_link_hash_entry
*fh
;
7052 struct ppc_link_hash_entry
*fdh
;
7053 bfd_boolean force_local
;
7055 fh
= (struct ppc_link_hash_entry
*) h
;
7056 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
7062 if (fh
->elf
.root
.root
.string
[0] != '.'
7063 || fh
->elf
.root
.root
.string
[1] == '\0')
7067 htab
= ppc_hash_table (info
);
7071 /* Find the corresponding function descriptor symbol. */
7072 fdh
= lookup_fdh (fh
, htab
);
7074 /* Resolve undefined references to dot-symbols as the value
7075 in the function descriptor, if we have one in a regular object.
7076 This is to satisfy cases like ".quad .foo". Calls to functions
7077 in dynamic objects are handled elsewhere. */
7078 if ((fh
->elf
.root
.type
== bfd_link_hash_undefined
7079 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
7080 && (fdh
->elf
.root
.type
== bfd_link_hash_defined
7081 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
7082 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
7083 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
7084 fdh
->elf
.root
.u
.def
.value
,
7085 &fh
->elf
.root
.u
.def
.section
,
7086 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
7088 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
7089 fh
->elf
.forced_local
= 1;
7090 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
7091 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
7094 if (!fh
->elf
.dynamic
)
7096 struct plt_entry
*ent
;
7098 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7099 if (ent
->plt
.refcount
> 0)
7105 /* Create a descriptor as undefined if necessary. */
7107 && !bfd_link_executable (info
)
7108 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
7109 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
7111 fdh
= make_fdh (info
, fh
);
7116 /* We can't support overriding of symbols on a fake descriptor. */
7119 && (fh
->elf
.root
.type
== bfd_link_hash_defined
7120 || fh
->elf
.root
.type
== bfd_link_hash_defweak
))
7121 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
7123 /* Transfer dynamic linking information to the function descriptor. */
7126 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
7127 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
7128 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
7129 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
7130 fdh
->elf
.dynamic
|= fh
->elf
.dynamic
;
7131 fdh
->elf
.needs_plt
|= (fh
->elf
.needs_plt
7132 || fh
->elf
.type
== STT_FUNC
7133 || fh
->elf
.type
== STT_GNU_IFUNC
);
7134 move_plt_plist (fh
, fdh
);
7136 if (!fdh
->elf
.forced_local
7137 && fh
->elf
.dynindx
!= -1)
7138 if (!bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
7142 /* Now that the info is on the function descriptor, clear the
7143 function code sym info. Any function code syms for which we
7144 don't have a definition in a regular file, we force local.
7145 This prevents a shared library from exporting syms that have
7146 been imported from another library. Function code syms that
7147 are really in the library we must leave global to prevent the
7148 linker dragging in a definition from a static library. */
7149 force_local
= (!fh
->elf
.def_regular
7151 || !fdh
->elf
.def_regular
7152 || fdh
->elf
.forced_local
);
7153 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7158 static const struct sfpr_def_parms save_res_funcs
[] =
7160 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
7161 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
7162 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
7163 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
7164 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
7165 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
7166 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
7167 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
7168 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
7169 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
7170 { "_savevr_", 20, 31, savevr
, savevr_tail
},
7171 { "_restvr_", 20, 31, restvr
, restvr_tail
}
7174 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7175 this hook to a) provide some gcc support functions, and b) transfer
7176 dynamic linking information gathered so far on function code symbol
7177 entries, to their corresponding function descriptor symbol entries. */
7180 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
7181 struct bfd_link_info
*info
)
7183 struct ppc_link_hash_table
*htab
;
7185 htab
= ppc_hash_table (info
);
7189 /* Provide any missing _save* and _rest* functions. */
7190 if (htab
->sfpr
!= NULL
)
7194 htab
->sfpr
->size
= 0;
7195 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
7196 if (!sfpr_define (info
, &save_res_funcs
[i
], NULL
))
7198 if (htab
->sfpr
->size
== 0)
7199 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
7202 if (bfd_link_relocatable (info
))
7205 if (htab
->elf
.hgot
!= NULL
)
7207 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
7208 /* Make .TOC. defined so as to prevent it being made dynamic.
7209 The wrong value here is fixed later in ppc64_elf_set_toc. */
7210 if (!htab
->elf
.hgot
->def_regular
7211 || htab
->elf
.hgot
->root
.type
!= bfd_link_hash_defined
)
7213 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
7214 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
7215 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
7216 htab
->elf
.hgot
->def_regular
= 1;
7217 htab
->elf
.hgot
->root
.linker_def
= 1;
7219 htab
->elf
.hgot
->type
= STT_OBJECT
;
7220 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
7224 if (htab
->need_func_desc_adj
)
7226 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
7227 htab
->need_func_desc_adj
= 0;
7233 /* Return true if we have dynamic relocs against H that apply to
7234 read-only sections. */
7237 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7239 struct ppc_link_hash_entry
*eh
;
7240 struct elf_dyn_relocs
*p
;
7242 eh
= (struct ppc_link_hash_entry
*) h
;
7243 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7245 asection
*s
= p
->sec
->output_section
;
7247 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7253 /* Return true if we have dynamic relocs against H or any of its weak
7254 aliases, that apply to read-only sections. */
7257 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7259 struct ppc_link_hash_entry
*eh
;
7261 eh
= (struct ppc_link_hash_entry
*) h
;
7264 if (readonly_dynrelocs (&eh
->elf
))
7267 } while (eh
!= NULL
&& &eh
->elf
!= h
);
7272 /* Return whether EH has pc-relative dynamic relocs. */
7275 pc_dynrelocs (struct ppc_link_hash_entry
*eh
)
7277 struct elf_dyn_relocs
*p
;
7279 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7280 if (p
->pc_count
!= 0)
7285 /* Return true if a global entry stub will be created for H. Valid
7286 for ELFv2 before plt entries have been allocated. */
7289 global_entry_stub (struct elf_link_hash_entry
*h
)
7291 struct plt_entry
*pent
;
7293 if (!h
->pointer_equality_needed
7297 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7298 if (pent
->plt
.refcount
> 0
7299 && pent
->addend
== 0)
7305 /* Adjust a symbol defined by a dynamic object and referenced by a
7306 regular object. The current definition is in some section of the
7307 dynamic object, but we're not including those sections. We have to
7308 change the definition to something the rest of the link can
7312 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7313 struct elf_link_hash_entry
*h
)
7315 struct ppc_link_hash_table
*htab
;
7318 htab
= ppc_hash_table (info
);
7322 /* Deal with function syms. */
7323 if (h
->type
== STT_FUNC
7324 || h
->type
== STT_GNU_IFUNC
7327 /* Clear procedure linkage table information for any symbol that
7328 won't need a .plt entry. */
7329 struct plt_entry
*ent
;
7330 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7331 if (ent
->plt
.refcount
> 0)
7334 || (h
->type
!= STT_GNU_IFUNC
7335 && (SYMBOL_CALLS_LOCAL (info
, h
)
7336 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
7337 || ((struct ppc_link_hash_entry
*) h
)->save_res
)
7339 h
->plt
.plist
= NULL
;
7341 h
->pointer_equality_needed
= 0;
7343 else if (abiversion (info
->output_bfd
) >= 2)
7345 /* Taking a function's address in a read/write section
7346 doesn't require us to define the function symbol in the
7347 executable on a global entry stub. A dynamic reloc can
7348 be used instead. The reason we prefer a few more dynamic
7349 relocs is that calling via a global entry stub costs a
7350 few more instructions, and pointer_equality_needed causes
7351 extra work in ld.so when resolving these symbols. */
7352 if (global_entry_stub (h
)
7353 && !alias_readonly_dynrelocs (h
))
7355 h
->pointer_equality_needed
= 0;
7356 /* After adjust_dynamic_symbol, non_got_ref set in
7357 the non-pic case means that dyn_relocs for this
7358 symbol should be discarded. */
7362 /* If making a plt entry, then we don't need copy relocs. */
7367 h
->plt
.plist
= NULL
;
7369 /* If this is a weak symbol, and there is a real definition, the
7370 processor independent code will have arranged for us to see the
7371 real definition first, and we can just use the same value. */
7372 if (h
->u
.weakdef
!= NULL
)
7374 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7375 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7376 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7377 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7378 if (ELIMINATE_COPY_RELOCS
)
7379 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7383 /* If we are creating a shared library, we must presume that the
7384 only references to the symbol are via the global offset table.
7385 For such cases we need not do anything here; the relocations will
7386 be handled correctly by relocate_section. */
7387 if (bfd_link_pic (info
))
7390 /* If there are no references to this symbol that do not use the
7391 GOT, we don't need to generate a copy reloc. */
7392 if (!h
->non_got_ref
)
7395 /* Don't generate a copy reloc for symbols defined in the executable. */
7396 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
7398 /* If -z nocopyreloc was given, don't generate them either. */
7399 || info
->nocopyreloc
7401 /* If we didn't find any dynamic relocs in read-only sections, then
7402 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7403 || (ELIMINATE_COPY_RELOCS
&& !alias_readonly_dynrelocs (h
))
7405 /* Protected variables do not work with .dynbss. The copy in
7406 .dynbss won't be used by the shared library with the protected
7407 definition for the variable. Text relocations are preferable
7408 to an incorrect program. */
7409 || h
->protected_def
)
7415 if (h
->plt
.plist
!= NULL
)
7417 /* We should never get here, but unfortunately there are versions
7418 of gcc out there that improperly (for this ABI) put initialized
7419 function pointers, vtable refs and suchlike in read-only
7420 sections. Allow them to proceed, but warn that this might
7421 break at runtime. */
7422 info
->callbacks
->einfo
7423 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7424 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7425 h
->root
.root
.string
);
7428 /* This is a reference to a symbol defined by a dynamic object which
7429 is not a function. */
7431 /* We must allocate the symbol in our .dynbss section, which will
7432 become part of the .bss section of the executable. There will be
7433 an entry for this symbol in the .dynsym section. The dynamic
7434 object will contain position independent code, so all references
7435 from the dynamic object to this symbol will go through the global
7436 offset table. The dynamic linker will use the .dynsym entry to
7437 determine the address it must put in the global offset table, so
7438 both the dynamic object and the regular object will refer to the
7439 same memory location for the variable. */
7441 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7442 to copy the initial value out of the dynamic object and into the
7443 runtime process image. We need to remember the offset into the
7444 .rela.bss section we are going to use. */
7445 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7447 s
= htab
->elf
.sdynrelro
;
7448 srel
= htab
->elf
.sreldynrelro
;
7452 s
= htab
->elf
.sdynbss
;
7453 srel
= htab
->elf
.srelbss
;
7455 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7457 srel
->size
+= sizeof (Elf64_External_Rela
);
7461 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7464 /* If given a function descriptor symbol, hide both the function code
7465 sym and the descriptor. */
7467 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7468 struct elf_link_hash_entry
*h
,
7469 bfd_boolean force_local
)
7471 struct ppc_link_hash_entry
*eh
;
7472 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7474 eh
= (struct ppc_link_hash_entry
*) h
;
7475 if (eh
->is_func_descriptor
)
7477 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7482 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7485 /* We aren't supposed to use alloca in BFD because on
7486 systems which do not have alloca the version in libiberty
7487 calls xmalloc, which might cause the program to crash
7488 when it runs out of memory. This function doesn't have a
7489 return status, so there's no way to gracefully return an
7490 error. So cheat. We know that string[-1] can be safely
7491 accessed; It's either a string in an ELF string table,
7492 or allocated in an objalloc structure. */
7494 p
= eh
->elf
.root
.root
.string
- 1;
7497 fh
= (struct ppc_link_hash_entry
*)
7498 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7501 /* Unfortunately, if it so happens that the string we were
7502 looking for was allocated immediately before this string,
7503 then we overwrote the string terminator. That's the only
7504 reason the lookup should fail. */
7507 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7508 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7510 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7511 fh
= (struct ppc_link_hash_entry
*)
7512 elf_link_hash_lookup (htab
, p
, FALSE
, FALSE
, FALSE
);
7521 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7526 get_sym_h (struct elf_link_hash_entry
**hp
,
7527 Elf_Internal_Sym
**symp
,
7529 unsigned char **tls_maskp
,
7530 Elf_Internal_Sym
**locsymsp
,
7531 unsigned long r_symndx
,
7534 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7536 if (r_symndx
>= symtab_hdr
->sh_info
)
7538 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7539 struct elf_link_hash_entry
*h
;
7541 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7542 h
= elf_follow_link (h
);
7550 if (symsecp
!= NULL
)
7552 asection
*symsec
= NULL
;
7553 if (h
->root
.type
== bfd_link_hash_defined
7554 || h
->root
.type
== bfd_link_hash_defweak
)
7555 symsec
= h
->root
.u
.def
.section
;
7559 if (tls_maskp
!= NULL
)
7561 struct ppc_link_hash_entry
*eh
;
7563 eh
= (struct ppc_link_hash_entry
*) h
;
7564 *tls_maskp
= &eh
->tls_mask
;
7569 Elf_Internal_Sym
*sym
;
7570 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7572 if (locsyms
== NULL
)
7574 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7575 if (locsyms
== NULL
)
7576 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7577 symtab_hdr
->sh_info
,
7578 0, NULL
, NULL
, NULL
);
7579 if (locsyms
== NULL
)
7581 *locsymsp
= locsyms
;
7583 sym
= locsyms
+ r_symndx
;
7591 if (symsecp
!= NULL
)
7592 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7594 if (tls_maskp
!= NULL
)
7596 struct got_entry
**lgot_ents
;
7597 unsigned char *tls_mask
;
7600 lgot_ents
= elf_local_got_ents (ibfd
);
7601 if (lgot_ents
!= NULL
)
7603 struct plt_entry
**local_plt
= (struct plt_entry
**)
7604 (lgot_ents
+ symtab_hdr
->sh_info
);
7605 unsigned char *lgot_masks
= (unsigned char *)
7606 (local_plt
+ symtab_hdr
->sh_info
);
7607 tls_mask
= &lgot_masks
[r_symndx
];
7609 *tls_maskp
= tls_mask
;
7615 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7616 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7617 type suitable for optimization, and 1 otherwise. */
7620 get_tls_mask (unsigned char **tls_maskp
,
7621 unsigned long *toc_symndx
,
7622 bfd_vma
*toc_addend
,
7623 Elf_Internal_Sym
**locsymsp
,
7624 const Elf_Internal_Rela
*rel
,
7627 unsigned long r_symndx
;
7629 struct elf_link_hash_entry
*h
;
7630 Elf_Internal_Sym
*sym
;
7634 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7635 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7638 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7640 || ppc64_elf_section_data (sec
) == NULL
7641 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7644 /* Look inside a TOC section too. */
7647 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7648 off
= h
->root
.u
.def
.value
;
7651 off
= sym
->st_value
;
7652 off
+= rel
->r_addend
;
7653 BFD_ASSERT (off
% 8 == 0);
7654 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7655 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7656 if (toc_symndx
!= NULL
)
7657 *toc_symndx
= r_symndx
;
7658 if (toc_addend
!= NULL
)
7659 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7660 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7662 if ((h
== NULL
|| is_static_defined (h
))
7663 && (next_r
== -1 || next_r
== -2))
7668 /* Find (or create) an entry in the tocsave hash table. */
7670 static struct tocsave_entry
*
7671 tocsave_find (struct ppc_link_hash_table
*htab
,
7672 enum insert_option insert
,
7673 Elf_Internal_Sym
**local_syms
,
7674 const Elf_Internal_Rela
*irela
,
7677 unsigned long r_indx
;
7678 struct elf_link_hash_entry
*h
;
7679 Elf_Internal_Sym
*sym
;
7680 struct tocsave_entry ent
, *p
;
7682 struct tocsave_entry
**slot
;
7684 r_indx
= ELF64_R_SYM (irela
->r_info
);
7685 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7687 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7690 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd
);
7695 ent
.offset
= h
->root
.u
.def
.value
;
7697 ent
.offset
= sym
->st_value
;
7698 ent
.offset
+= irela
->r_addend
;
7700 hash
= tocsave_htab_hash (&ent
);
7701 slot
= ((struct tocsave_entry
**)
7702 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7708 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7717 /* Adjust all global syms defined in opd sections. In gcc generated
7718 code for the old ABI, these will already have been done. */
7721 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7723 struct ppc_link_hash_entry
*eh
;
7725 struct _opd_sec_data
*opd
;
7727 if (h
->root
.type
== bfd_link_hash_indirect
)
7730 if (h
->root
.type
!= bfd_link_hash_defined
7731 && h
->root
.type
!= bfd_link_hash_defweak
)
7734 eh
= (struct ppc_link_hash_entry
*) h
;
7735 if (eh
->adjust_done
)
7738 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7739 opd
= get_opd_info (sym_sec
);
7740 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7742 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7745 /* This entry has been deleted. */
7746 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7749 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7750 if (discarded_section (dsec
))
7752 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7756 eh
->elf
.root
.u
.def
.value
= 0;
7757 eh
->elf
.root
.u
.def
.section
= dsec
;
7760 eh
->elf
.root
.u
.def
.value
+= adjust
;
7761 eh
->adjust_done
= 1;
7766 /* Handles decrementing dynamic reloc counts for the reloc specified by
7767 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7768 have already been determined. */
7771 dec_dynrel_count (bfd_vma r_info
,
7773 struct bfd_link_info
*info
,
7774 Elf_Internal_Sym
**local_syms
,
7775 struct elf_link_hash_entry
*h
,
7776 Elf_Internal_Sym
*sym
)
7778 enum elf_ppc64_reloc_type r_type
;
7779 asection
*sym_sec
= NULL
;
7781 /* Can this reloc be dynamic? This switch, and later tests here
7782 should be kept in sync with the code in check_relocs. */
7783 r_type
= ELF64_R_TYPE (r_info
);
7789 case R_PPC64_TPREL16
:
7790 case R_PPC64_TPREL16_LO
:
7791 case R_PPC64_TPREL16_HI
:
7792 case R_PPC64_TPREL16_HA
:
7793 case R_PPC64_TPREL16_DS
:
7794 case R_PPC64_TPREL16_LO_DS
:
7795 case R_PPC64_TPREL16_HIGH
:
7796 case R_PPC64_TPREL16_HIGHA
:
7797 case R_PPC64_TPREL16_HIGHER
:
7798 case R_PPC64_TPREL16_HIGHERA
:
7799 case R_PPC64_TPREL16_HIGHEST
:
7800 case R_PPC64_TPREL16_HIGHESTA
:
7801 if (!bfd_link_pic (info
))
7804 case R_PPC64_TPREL64
:
7805 case R_PPC64_DTPMOD64
:
7806 case R_PPC64_DTPREL64
:
7807 case R_PPC64_ADDR64
:
7811 case R_PPC64_ADDR14
:
7812 case R_PPC64_ADDR14_BRNTAKEN
:
7813 case R_PPC64_ADDR14_BRTAKEN
:
7814 case R_PPC64_ADDR16
:
7815 case R_PPC64_ADDR16_DS
:
7816 case R_PPC64_ADDR16_HA
:
7817 case R_PPC64_ADDR16_HI
:
7818 case R_PPC64_ADDR16_HIGH
:
7819 case R_PPC64_ADDR16_HIGHA
:
7820 case R_PPC64_ADDR16_HIGHER
:
7821 case R_PPC64_ADDR16_HIGHERA
:
7822 case R_PPC64_ADDR16_HIGHEST
:
7823 case R_PPC64_ADDR16_HIGHESTA
:
7824 case R_PPC64_ADDR16_LO
:
7825 case R_PPC64_ADDR16_LO_DS
:
7826 case R_PPC64_ADDR24
:
7827 case R_PPC64_ADDR32
:
7828 case R_PPC64_UADDR16
:
7829 case R_PPC64_UADDR32
:
7830 case R_PPC64_UADDR64
:
7835 if (local_syms
!= NULL
)
7837 unsigned long r_symndx
;
7838 bfd
*ibfd
= sec
->owner
;
7840 r_symndx
= ELF64_R_SYM (r_info
);
7841 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7845 if ((bfd_link_pic (info
)
7846 && (must_be_dyn_reloc (info
, r_type
)
7848 && (!SYMBOLIC_BIND (info
, h
)
7849 || h
->root
.type
== bfd_link_hash_defweak
7850 || !h
->def_regular
))))
7851 || (ELIMINATE_COPY_RELOCS
7852 && !bfd_link_pic (info
)
7854 && (h
->root
.type
== bfd_link_hash_defweak
7855 || !h
->def_regular
)))
7862 struct elf_dyn_relocs
*p
;
7863 struct elf_dyn_relocs
**pp
;
7864 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7866 /* elf_gc_sweep may have already removed all dyn relocs associated
7867 with local syms for a given section. Also, symbol flags are
7868 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7869 report a dynreloc miscount. */
7870 if (*pp
== NULL
&& info
->gc_sections
)
7873 while ((p
= *pp
) != NULL
)
7877 if (!must_be_dyn_reloc (info
, r_type
))
7889 struct ppc_dyn_relocs
*p
;
7890 struct ppc_dyn_relocs
**pp
;
7892 bfd_boolean is_ifunc
;
7894 if (local_syms
== NULL
)
7895 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7896 if (sym_sec
== NULL
)
7899 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7900 pp
= (struct ppc_dyn_relocs
**) vpp
;
7902 if (*pp
== NULL
&& info
->gc_sections
)
7905 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7906 while ((p
= *pp
) != NULL
)
7908 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7919 /* xgettext:c-format */
7920 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7922 bfd_set_error (bfd_error_bad_value
);
7926 /* Remove unused Official Procedure Descriptor entries. Currently we
7927 only remove those associated with functions in discarded link-once
7928 sections, or weakly defined functions that have been overridden. It
7929 would be possible to remove many more entries for statically linked
7933 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7936 bfd_boolean some_edited
= FALSE
;
7937 asection
*need_pad
= NULL
;
7938 struct ppc_link_hash_table
*htab
;
7940 htab
= ppc_hash_table (info
);
7944 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7947 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7948 Elf_Internal_Shdr
*symtab_hdr
;
7949 Elf_Internal_Sym
*local_syms
;
7950 struct _opd_sec_data
*opd
;
7951 bfd_boolean need_edit
, add_aux_fields
, broken
;
7952 bfd_size_type cnt_16b
= 0;
7954 if (!is_ppc64_elf (ibfd
))
7957 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7958 if (sec
== NULL
|| sec
->size
== 0)
7961 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7964 if (sec
->output_section
== bfd_abs_section_ptr
)
7967 /* Look through the section relocs. */
7968 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7972 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7974 /* Read the relocations. */
7975 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7977 if (relstart
== NULL
)
7980 /* First run through the relocs to check they are sane, and to
7981 determine whether we need to edit this opd section. */
7985 relend
= relstart
+ sec
->reloc_count
;
7986 for (rel
= relstart
; rel
< relend
; )
7988 enum elf_ppc64_reloc_type r_type
;
7989 unsigned long r_symndx
;
7991 struct elf_link_hash_entry
*h
;
7992 Elf_Internal_Sym
*sym
;
7995 /* .opd contains an array of 16 or 24 byte entries. We're
7996 only interested in the reloc pointing to a function entry
7998 offset
= rel
->r_offset
;
7999 if (rel
+ 1 == relend
8000 || rel
[1].r_offset
!= offset
+ 8)
8002 /* If someone messes with .opd alignment then after a
8003 "ld -r" we might have padding in the middle of .opd.
8004 Also, there's nothing to prevent someone putting
8005 something silly in .opd with the assembler. No .opd
8006 optimization for them! */
8009 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
8014 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
8015 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
8018 /* xgettext:c-format */
8019 (_("%B: unexpected reloc type %u in .opd section"),
8025 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8026 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8030 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
8032 const char *sym_name
;
8034 sym_name
= h
->root
.root
.string
;
8036 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
8040 /* xgettext:c-format */
8041 (_("%B: undefined sym `%s' in .opd section"),
8047 /* opd entries are always for functions defined in the
8048 current input bfd. If the symbol isn't defined in the
8049 input bfd, then we won't be using the function in this
8050 bfd; It must be defined in a linkonce section in another
8051 bfd, or is weak. It's also possible that we are
8052 discarding the function due to a linker script /DISCARD/,
8053 which we test for via the output_section. */
8054 if (sym_sec
->owner
!= ibfd
8055 || sym_sec
->output_section
== bfd_abs_section_ptr
)
8059 if (rel
+ 1 == relend
8060 || (rel
+ 2 < relend
8061 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
8066 if (sec
->size
== offset
+ 24)
8071 if (sec
->size
== offset
+ 16)
8078 else if (rel
+ 1 < relend
8079 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
8080 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
8082 if (rel
[0].r_offset
== offset
+ 16)
8084 else if (rel
[0].r_offset
!= offset
+ 24)
8091 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
8093 if (!broken
&& (need_edit
|| add_aux_fields
))
8095 Elf_Internal_Rela
*write_rel
;
8096 Elf_Internal_Shdr
*rel_hdr
;
8097 bfd_byte
*rptr
, *wptr
;
8098 bfd_byte
*new_contents
;
8101 new_contents
= NULL
;
8102 amt
= OPD_NDX (sec
->size
) * sizeof (long);
8103 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
8104 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
8105 if (opd
->adjust
== NULL
)
8107 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
8109 /* This seems a waste of time as input .opd sections are all
8110 zeros as generated by gcc, but I suppose there's no reason
8111 this will always be so. We might start putting something in
8112 the third word of .opd entries. */
8113 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
8116 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
8121 if (local_syms
!= NULL
8122 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8124 if (elf_section_data (sec
)->relocs
!= relstart
)
8128 sec
->contents
= loc
;
8129 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8132 elf_section_data (sec
)->relocs
= relstart
;
8134 new_contents
= sec
->contents
;
8137 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
8138 if (new_contents
== NULL
)
8142 wptr
= new_contents
;
8143 rptr
= sec
->contents
;
8144 write_rel
= relstart
;
8145 for (rel
= relstart
; rel
< relend
; )
8147 unsigned long r_symndx
;
8149 struct elf_link_hash_entry
*h
;
8150 struct ppc_link_hash_entry
*fdh
= NULL
;
8151 Elf_Internal_Sym
*sym
;
8153 Elf_Internal_Rela
*next_rel
;
8156 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8157 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8162 if (next_rel
+ 1 == relend
8163 || (next_rel
+ 2 < relend
8164 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
8167 /* See if the .opd entry is full 24 byte or
8168 16 byte (with fd_aux entry overlapped with next
8171 if (next_rel
== relend
)
8173 if (sec
->size
== rel
->r_offset
+ 16)
8176 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
8180 && h
->root
.root
.string
[0] == '.')
8182 fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
8185 fdh
= ppc_follow_link (fdh
);
8186 if (fdh
->elf
.root
.type
!= bfd_link_hash_defined
8187 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8192 skip
= (sym_sec
->owner
!= ibfd
8193 || sym_sec
->output_section
== bfd_abs_section_ptr
);
8196 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
8198 /* Arrange for the function descriptor sym
8200 fdh
->elf
.root
.u
.def
.value
= 0;
8201 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
8203 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
8205 if (NO_OPD_RELOCS
|| bfd_link_relocatable (info
))
8210 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8214 if (++rel
== next_rel
)
8217 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8218 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8225 /* We'll be keeping this opd entry. */
8230 /* Redefine the function descriptor symbol to
8231 this location in the opd section. It is
8232 necessary to update the value here rather
8233 than using an array of adjustments as we do
8234 for local symbols, because various places
8235 in the generic ELF code use the value
8236 stored in u.def.value. */
8237 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
8238 fdh
->adjust_done
= 1;
8241 /* Local syms are a bit tricky. We could
8242 tweak them as they can be cached, but
8243 we'd need to look through the local syms
8244 for the function descriptor sym which we
8245 don't have at the moment. So keep an
8246 array of adjustments. */
8247 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
8248 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
8251 memcpy (wptr
, rptr
, opd_ent_size
);
8252 wptr
+= opd_ent_size
;
8253 if (add_aux_fields
&& opd_ent_size
== 16)
8255 memset (wptr
, '\0', 8);
8259 /* We need to adjust any reloc offsets to point to the
8261 for ( ; rel
!= next_rel
; ++rel
)
8263 rel
->r_offset
+= adjust
;
8264 if (write_rel
!= rel
)
8265 memcpy (write_rel
, rel
, sizeof (*rel
));
8270 rptr
+= opd_ent_size
;
8273 sec
->size
= wptr
- new_contents
;
8274 sec
->reloc_count
= write_rel
- relstart
;
8277 free (sec
->contents
);
8278 sec
->contents
= new_contents
;
8281 /* Fudge the header size too, as this is used later in
8282 elf_bfd_final_link if we are emitting relocs. */
8283 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
8284 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
8287 else if (elf_section_data (sec
)->relocs
!= relstart
)
8290 if (local_syms
!= NULL
8291 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8293 if (!info
->keep_memory
)
8296 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8301 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
8303 /* If we are doing a final link and the last .opd entry is just 16 byte
8304 long, add a 8 byte padding after it. */
8305 if (need_pad
!= NULL
&& !bfd_link_relocatable (info
))
8309 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8311 BFD_ASSERT (need_pad
->size
> 0);
8313 p
= bfd_malloc (need_pad
->size
+ 8);
8317 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8318 p
, 0, need_pad
->size
))
8321 need_pad
->contents
= p
;
8322 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8326 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8330 need_pad
->contents
= p
;
8333 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8334 need_pad
->size
+= 8;
8340 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8343 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8345 struct ppc_link_hash_table
*htab
;
8347 htab
= ppc_hash_table (info
);
8351 if (abiversion (info
->output_bfd
) == 1)
8354 if (htab
->params
->no_multi_toc
)
8355 htab
->do_multi_toc
= 0;
8356 else if (!htab
->do_multi_toc
)
8357 htab
->params
->no_multi_toc
= 1;
8359 /* Default to --no-plt-localentry, as this option can cause problems
8360 with symbol interposition. For example, glibc libpthread.so and
8361 libc.so duplicate many pthread symbols, with a fallback
8362 implementation in libc.so. In some cases the fallback does more
8363 work than the pthread implementation. __pthread_condattr_destroy
8364 is one such symbol: the libpthread.so implementation is
8365 localentry:0 while the libc.so implementation is localentry:8.
8366 An app that "cleverly" uses dlopen to only load necessary
8367 libraries at runtime may omit loading libpthread.so when not
8368 running multi-threaded, which then results in the libc.so
8369 fallback symbols being used and ld.so complaining. Now there
8370 are workarounds in ld (see non_zero_localentry) to detect the
8371 pthread situation, but that may not be the only case where
8372 --plt-localentry can cause trouble. */
8373 if (htab
->params
->plt_localentry0
< 0)
8374 htab
->params
->plt_localentry0
= 0;
8375 if (htab
->params
->plt_localentry0
8376 && elf_link_hash_lookup (&htab
->elf
, "GLIBC_2.26",
8377 FALSE
, FALSE
, FALSE
) == NULL
)
8378 info
->callbacks
->einfo
8379 (_("%P: warning: --plt-localentry is especially dangerous without "
8380 "ld.so support to detect ABI violations.\n"));
8382 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8383 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8384 FALSE
, FALSE
, TRUE
));
8385 /* Move dynamic linking info to the function descriptor sym. */
8386 if (htab
->tls_get_addr
!= NULL
)
8387 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8388 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8389 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8390 FALSE
, FALSE
, TRUE
));
8391 if (htab
->params
->tls_get_addr_opt
)
8393 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8395 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8396 FALSE
, FALSE
, TRUE
);
8398 func_desc_adjust (opt
, info
);
8399 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8400 FALSE
, FALSE
, TRUE
);
8402 && (opt_fd
->root
.type
== bfd_link_hash_defined
8403 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8405 /* If glibc supports an optimized __tls_get_addr call stub,
8406 signalled by the presence of __tls_get_addr_opt, and we'll
8407 be calling __tls_get_addr via a plt call stub, then
8408 make __tls_get_addr point to __tls_get_addr_opt. */
8409 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8410 if (htab
->elf
.dynamic_sections_created
8412 && (tga_fd
->type
== STT_FUNC
8413 || tga_fd
->needs_plt
)
8414 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8415 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga_fd
)))
8417 struct plt_entry
*ent
;
8419 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8420 if (ent
->plt
.refcount
> 0)
8424 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8425 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8426 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8428 if (opt_fd
->dynindx
!= -1)
8430 /* Use __tls_get_addr_opt in dynamic relocations. */
8431 opt_fd
->dynindx
= -1;
8432 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8433 opt_fd
->dynstr_index
);
8434 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8437 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8438 tga
= &htab
->tls_get_addr
->elf
;
8439 if (opt
!= NULL
&& tga
!= NULL
)
8441 tga
->root
.type
= bfd_link_hash_indirect
;
8442 tga
->root
.u
.i
.link
= &opt
->root
;
8443 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8445 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8447 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8449 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8450 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8451 if (htab
->tls_get_addr
!= NULL
)
8453 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8454 htab
->tls_get_addr
->is_func
= 1;
8459 else if (htab
->params
->tls_get_addr_opt
< 0)
8460 htab
->params
->tls_get_addr_opt
= 0;
8462 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8465 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8469 branch_reloc_hash_match (const bfd
*ibfd
,
8470 const Elf_Internal_Rela
*rel
,
8471 const struct ppc_link_hash_entry
*hash1
,
8472 const struct ppc_link_hash_entry
*hash2
)
8474 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8475 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8476 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8478 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8480 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8481 struct elf_link_hash_entry
*h
;
8483 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8484 h
= elf_follow_link (h
);
8485 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8491 /* Run through all the TLS relocs looking for optimization
8492 opportunities. The linker has been hacked (see ppc64elf.em) to do
8493 a preliminary section layout so that we know the TLS segment
8494 offsets. We can't optimize earlier because some optimizations need
8495 to know the tp offset, and we need to optimize before allocating
8496 dynamic relocations. */
8499 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8503 struct ppc_link_hash_table
*htab
;
8504 unsigned char *toc_ref
;
8507 if (!bfd_link_executable (info
))
8510 htab
= ppc_hash_table (info
);
8514 /* Make two passes over the relocs. On the first pass, mark toc
8515 entries involved with tls relocs, and check that tls relocs
8516 involved in setting up a tls_get_addr call are indeed followed by
8517 such a call. If they are not, we can't do any tls optimization.
8518 On the second pass twiddle tls_mask flags to notify
8519 relocate_section that optimization can be done, and adjust got
8520 and plt refcounts. */
8522 for (pass
= 0; pass
< 2; ++pass
)
8523 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8525 Elf_Internal_Sym
*locsyms
= NULL
;
8526 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8528 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8529 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8531 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8532 bfd_boolean found_tls_get_addr_arg
= 0;
8534 /* Read the relocations. */
8535 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8537 if (relstart
== NULL
)
8543 relend
= relstart
+ sec
->reloc_count
;
8544 for (rel
= relstart
; rel
< relend
; rel
++)
8546 enum elf_ppc64_reloc_type r_type
;
8547 unsigned long r_symndx
;
8548 struct elf_link_hash_entry
*h
;
8549 Elf_Internal_Sym
*sym
;
8551 unsigned char *tls_mask
;
8552 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8554 bfd_boolean ok_tprel
, is_local
;
8555 long toc_ref_index
= 0;
8556 int expecting_tls_get_addr
= 0;
8557 bfd_boolean ret
= FALSE
;
8559 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8560 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8564 if (elf_section_data (sec
)->relocs
!= relstart
)
8566 if (toc_ref
!= NULL
)
8569 && (elf_symtab_hdr (ibfd
).contents
8570 != (unsigned char *) locsyms
))
8577 if (h
->root
.type
== bfd_link_hash_defined
8578 || h
->root
.type
== bfd_link_hash_defweak
)
8579 value
= h
->root
.u
.def
.value
;
8580 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8584 found_tls_get_addr_arg
= 0;
8589 /* Symbols referenced by TLS relocs must be of type
8590 STT_TLS. So no need for .opd local sym adjust. */
8591 value
= sym
->st_value
;
8600 && h
->root
.type
== bfd_link_hash_undefweak
)
8602 else if (sym_sec
!= NULL
8603 && sym_sec
->output_section
!= NULL
)
8605 value
+= sym_sec
->output_offset
;
8606 value
+= sym_sec
->output_section
->vma
;
8607 value
-= htab
->elf
.tls_sec
->vma
;
8608 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8609 < (bfd_vma
) 1 << 32);
8613 r_type
= ELF64_R_TYPE (rel
->r_info
);
8614 /* If this section has old-style __tls_get_addr calls
8615 without marker relocs, then check that each
8616 __tls_get_addr call reloc is preceded by a reloc
8617 that conceivably belongs to the __tls_get_addr arg
8618 setup insn. If we don't find matching arg setup
8619 relocs, don't do any tls optimization. */
8621 && sec
->has_tls_get_addr_call
8623 && (h
== &htab
->tls_get_addr
->elf
8624 || h
== &htab
->tls_get_addr_fd
->elf
)
8625 && !found_tls_get_addr_arg
8626 && is_branch_reloc (r_type
))
8628 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8629 "TLS optimization disabled\n"),
8630 ibfd
, sec
, rel
->r_offset
);
8635 found_tls_get_addr_arg
= 0;
8638 case R_PPC64_GOT_TLSLD16
:
8639 case R_PPC64_GOT_TLSLD16_LO
:
8640 expecting_tls_get_addr
= 1;
8641 found_tls_get_addr_arg
= 1;
8644 case R_PPC64_GOT_TLSLD16_HI
:
8645 case R_PPC64_GOT_TLSLD16_HA
:
8646 /* These relocs should never be against a symbol
8647 defined in a shared lib. Leave them alone if
8648 that turns out to be the case. */
8655 tls_type
= TLS_TLS
| TLS_LD
;
8658 case R_PPC64_GOT_TLSGD16
:
8659 case R_PPC64_GOT_TLSGD16_LO
:
8660 expecting_tls_get_addr
= 1;
8661 found_tls_get_addr_arg
= 1;
8664 case R_PPC64_GOT_TLSGD16_HI
:
8665 case R_PPC64_GOT_TLSGD16_HA
:
8671 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8673 tls_type
= TLS_TLS
| TLS_GD
;
8676 case R_PPC64_GOT_TPREL16_DS
:
8677 case R_PPC64_GOT_TPREL16_LO_DS
:
8678 case R_PPC64_GOT_TPREL16_HI
:
8679 case R_PPC64_GOT_TPREL16_HA
:
8684 tls_clear
= TLS_TPREL
;
8685 tls_type
= TLS_TLS
| TLS_TPREL
;
8692 found_tls_get_addr_arg
= 1;
8697 case R_PPC64_TOC16_LO
:
8698 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8701 /* Mark this toc entry as referenced by a TLS
8702 code sequence. We can do that now in the
8703 case of R_PPC64_TLS, and after checking for
8704 tls_get_addr for the TOC16 relocs. */
8705 if (toc_ref
== NULL
)
8706 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8707 if (toc_ref
== NULL
)
8711 value
= h
->root
.u
.def
.value
;
8713 value
= sym
->st_value
;
8714 value
+= rel
->r_addend
;
8717 BFD_ASSERT (value
< toc
->size
8718 && toc
->output_offset
% 8 == 0);
8719 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8720 if (r_type
== R_PPC64_TLS
8721 || r_type
== R_PPC64_TLSGD
8722 || r_type
== R_PPC64_TLSLD
)
8724 toc_ref
[toc_ref_index
] = 1;
8728 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8733 expecting_tls_get_addr
= 2;
8736 case R_PPC64_TPREL64
:
8740 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8745 tls_set
= TLS_EXPLICIT
;
8746 tls_clear
= TLS_TPREL
;
8751 case R_PPC64_DTPMOD64
:
8755 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8757 if (rel
+ 1 < relend
8759 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8760 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8764 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8767 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8776 tls_set
= TLS_EXPLICIT
;
8787 if (!expecting_tls_get_addr
8788 || !sec
->has_tls_get_addr_call
)
8791 if (rel
+ 1 < relend
8792 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8794 htab
->tls_get_addr_fd
))
8796 if (expecting_tls_get_addr
== 2)
8798 /* Check for toc tls entries. */
8799 unsigned char *toc_tls
;
8802 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8807 if (toc_tls
!= NULL
)
8809 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8810 found_tls_get_addr_arg
= 1;
8812 toc_ref
[toc_ref_index
] = 1;
8818 if (expecting_tls_get_addr
!= 1)
8821 /* Uh oh, we didn't find the expected call. We
8822 could just mark this symbol to exclude it
8823 from tls optimization but it's safer to skip
8824 the entire optimization. */
8825 /* xgettext:c-format */
8826 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8827 "TLS optimization disabled\n"),
8828 ibfd
, sec
, rel
->r_offset
);
8833 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8835 struct plt_entry
*ent
;
8836 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8839 if (ent
->addend
== 0)
8841 if (ent
->plt
.refcount
> 0)
8843 ent
->plt
.refcount
-= 1;
8844 expecting_tls_get_addr
= 0;
8850 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8852 struct plt_entry
*ent
;
8853 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8856 if (ent
->addend
== 0)
8858 if (ent
->plt
.refcount
> 0)
8859 ent
->plt
.refcount
-= 1;
8867 if ((tls_set
& TLS_EXPLICIT
) == 0)
8869 struct got_entry
*ent
;
8871 /* Adjust got entry for this reloc. */
8875 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8877 for (; ent
!= NULL
; ent
= ent
->next
)
8878 if (ent
->addend
== rel
->r_addend
8879 && ent
->owner
== ibfd
8880 && ent
->tls_type
== tls_type
)
8887 /* We managed to get rid of a got entry. */
8888 if (ent
->got
.refcount
> 0)
8889 ent
->got
.refcount
-= 1;
8894 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8895 we'll lose one or two dyn relocs. */
8896 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8900 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8902 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8908 *tls_mask
|= tls_set
;
8909 *tls_mask
&= ~tls_clear
;
8912 if (elf_section_data (sec
)->relocs
!= relstart
)
8917 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8919 if (!info
->keep_memory
)
8922 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8926 if (toc_ref
!= NULL
)
8931 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8932 the values of any global symbols in a toc section that has been
8933 edited. Globals in toc sections should be a rarity, so this function
8934 sets a flag if any are found in toc sections other than the one just
8935 edited, so that further hash table traversals can be avoided. */
8937 struct adjust_toc_info
8940 unsigned long *skip
;
8941 bfd_boolean global_toc_syms
;
8944 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8947 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8949 struct ppc_link_hash_entry
*eh
;
8950 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8953 if (h
->root
.type
!= bfd_link_hash_defined
8954 && h
->root
.type
!= bfd_link_hash_defweak
)
8957 eh
= (struct ppc_link_hash_entry
*) h
;
8958 if (eh
->adjust_done
)
8961 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8963 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8964 i
= toc_inf
->toc
->rawsize
>> 3;
8966 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8968 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8971 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8974 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8975 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8978 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8979 eh
->adjust_done
= 1;
8981 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8982 toc_inf
->global_toc_syms
= TRUE
;
8987 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8988 on a _LO variety toc/got reloc. */
8991 ok_lo_toc_insn (unsigned int insn
, enum elf_ppc64_reloc_type r_type
)
8993 return ((insn
& (0x3f << 26)) == 12u << 26 /* addic */
8994 || (insn
& (0x3f << 26)) == 14u << 26 /* addi */
8995 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8996 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8997 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8998 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8999 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
9000 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
9001 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
9002 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
9003 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
9004 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
9005 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
9006 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
9007 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
9008 || (insn
& (0x3f << 26)) == 56u << 26 /* lq,lfq */
9009 || ((insn
& (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9010 /* Exclude lfqu by testing reloc. If relocs are ever
9011 defined for the reduced D field in psq_lu then those
9012 will need testing too. */
9013 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9014 || ((insn
& (0x3f << 26)) == 58u << 26 /* ld,lwa */
9016 || (insn
& (0x3f << 26)) == 60u << 26 /* stfq */
9017 || ((insn
& (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9018 /* Exclude stfqu. psq_stu as above for psq_lu. */
9019 && r_type
!= R_PPC64_TOC16_LO
&& r_type
!= R_PPC64_GOT16_LO
)
9020 || ((insn
& (0x3f << 26)) == 62u << 26 /* std,stq */
9021 && (insn
& 1) == 0));
9024 /* Examine all relocs referencing .toc sections in order to remove
9025 unused .toc entries. */
9028 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
9031 struct adjust_toc_info toc_inf
;
9032 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9034 htab
->do_toc_opt
= 1;
9035 toc_inf
.global_toc_syms
= TRUE
;
9036 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9038 asection
*toc
, *sec
;
9039 Elf_Internal_Shdr
*symtab_hdr
;
9040 Elf_Internal_Sym
*local_syms
;
9041 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
9042 unsigned long *skip
, *drop
;
9043 unsigned char *used
;
9044 unsigned char *keep
, last
, some_unused
;
9046 if (!is_ppc64_elf (ibfd
))
9049 toc
= bfd_get_section_by_name (ibfd
, ".toc");
9052 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
9053 || discarded_section (toc
))
9058 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9060 /* Look at sections dropped from the final link. */
9063 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9065 if (sec
->reloc_count
== 0
9066 || !discarded_section (sec
)
9067 || get_opd_info (sec
)
9068 || (sec
->flags
& SEC_ALLOC
) == 0
9069 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9072 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
9073 if (relstart
== NULL
)
9076 /* Run through the relocs to see which toc entries might be
9078 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9080 enum elf_ppc64_reloc_type r_type
;
9081 unsigned long r_symndx
;
9083 struct elf_link_hash_entry
*h
;
9084 Elf_Internal_Sym
*sym
;
9087 r_type
= ELF64_R_TYPE (rel
->r_info
);
9094 case R_PPC64_TOC16_LO
:
9095 case R_PPC64_TOC16_HI
:
9096 case R_PPC64_TOC16_HA
:
9097 case R_PPC64_TOC16_DS
:
9098 case R_PPC64_TOC16_LO_DS
:
9102 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9103 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9111 val
= h
->root
.u
.def
.value
;
9113 val
= sym
->st_value
;
9114 val
+= rel
->r_addend
;
9116 if (val
>= toc
->size
)
9119 /* Anything in the toc ought to be aligned to 8 bytes.
9120 If not, don't mark as unused. */
9126 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9131 skip
[val
>> 3] = ref_from_discarded
;
9134 if (elf_section_data (sec
)->relocs
!= relstart
)
9138 /* For largetoc loads of address constants, we can convert
9139 . addis rx,2,addr@got@ha
9140 . ld ry,addr@got@l(rx)
9142 . addis rx,2,addr@toc@ha
9143 . addi ry,rx,addr@toc@l
9144 when addr is within 2G of the toc pointer. This then means
9145 that the word storing "addr" in the toc is no longer needed. */
9147 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
9148 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
9149 && toc
->reloc_count
!= 0)
9151 /* Read toc relocs. */
9152 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9154 if (toc_relocs
== NULL
)
9157 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9159 enum elf_ppc64_reloc_type r_type
;
9160 unsigned long r_symndx
;
9162 struct elf_link_hash_entry
*h
;
9163 Elf_Internal_Sym
*sym
;
9166 r_type
= ELF64_R_TYPE (rel
->r_info
);
9167 if (r_type
!= R_PPC64_ADDR64
)
9170 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9171 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9176 || sym_sec
->output_section
== NULL
9177 || discarded_section (sym_sec
))
9180 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
9185 if (h
->type
== STT_GNU_IFUNC
)
9187 val
= h
->root
.u
.def
.value
;
9191 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
9193 val
= sym
->st_value
;
9195 val
+= rel
->r_addend
;
9196 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
9198 /* We don't yet know the exact toc pointer value, but we
9199 know it will be somewhere in the toc section. Don't
9200 optimize if the difference from any possible toc
9201 pointer is outside [ff..f80008000, 7fff7fff]. */
9202 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
9203 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9206 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
9207 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
9212 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
9217 skip
[rel
->r_offset
>> 3]
9218 |= can_optimize
| ((rel
- toc_relocs
) << 2);
9225 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
9229 if (local_syms
!= NULL
9230 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9234 && elf_section_data (sec
)->relocs
!= relstart
)
9236 if (toc_relocs
!= NULL
9237 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9244 /* Now check all kept sections that might reference the toc.
9245 Check the toc itself last. */
9246 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
9249 sec
= (sec
== toc
? NULL
9250 : sec
->next
== NULL
? toc
9251 : sec
->next
== toc
&& toc
->next
? toc
->next
9256 if (sec
->reloc_count
== 0
9257 || discarded_section (sec
)
9258 || get_opd_info (sec
)
9259 || (sec
->flags
& SEC_ALLOC
) == 0
9260 || (sec
->flags
& SEC_DEBUGGING
) != 0)
9263 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9265 if (relstart
== NULL
)
9271 /* Mark toc entries referenced as used. */
9275 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9277 enum elf_ppc64_reloc_type r_type
;
9278 unsigned long r_symndx
;
9280 struct elf_link_hash_entry
*h
;
9281 Elf_Internal_Sym
*sym
;
9283 enum {no_check
, check_lo
, check_ha
} insn_check
;
9285 r_type
= ELF64_R_TYPE (rel
->r_info
);
9289 insn_check
= no_check
;
9292 case R_PPC64_GOT_TLSLD16_HA
:
9293 case R_PPC64_GOT_TLSGD16_HA
:
9294 case R_PPC64_GOT_TPREL16_HA
:
9295 case R_PPC64_GOT_DTPREL16_HA
:
9296 case R_PPC64_GOT16_HA
:
9297 case R_PPC64_TOC16_HA
:
9298 insn_check
= check_ha
;
9301 case R_PPC64_GOT_TLSLD16_LO
:
9302 case R_PPC64_GOT_TLSGD16_LO
:
9303 case R_PPC64_GOT_TPREL16_LO_DS
:
9304 case R_PPC64_GOT_DTPREL16_LO_DS
:
9305 case R_PPC64_GOT16_LO
:
9306 case R_PPC64_GOT16_LO_DS
:
9307 case R_PPC64_TOC16_LO
:
9308 case R_PPC64_TOC16_LO_DS
:
9309 insn_check
= check_lo
;
9313 if (insn_check
!= no_check
)
9315 bfd_vma off
= rel
->r_offset
& ~3;
9316 unsigned char buf
[4];
9319 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
9324 insn
= bfd_get_32 (ibfd
, buf
);
9325 if (insn_check
== check_lo
9326 ? !ok_lo_toc_insn (insn
, r_type
)
9327 : ((insn
& ((0x3f << 26) | 0x1f << 16))
9328 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9332 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
9333 sprintf (str
, "%#08x", insn
);
9334 info
->callbacks
->einfo
9335 /* xgettext:c-format */
9336 (_("%H: toc optimization is not supported for"
9337 " %s instruction.\n"),
9338 ibfd
, sec
, rel
->r_offset
& ~3, str
);
9345 case R_PPC64_TOC16_LO
:
9346 case R_PPC64_TOC16_HI
:
9347 case R_PPC64_TOC16_HA
:
9348 case R_PPC64_TOC16_DS
:
9349 case R_PPC64_TOC16_LO_DS
:
9350 /* In case we're taking addresses of toc entries. */
9351 case R_PPC64_ADDR64
:
9358 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9359 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9370 val
= h
->root
.u
.def
.value
;
9372 val
= sym
->st_value
;
9373 val
+= rel
->r_addend
;
9375 if (val
>= toc
->size
)
9378 if ((skip
[val
>> 3] & can_optimize
) != 0)
9385 case R_PPC64_TOC16_HA
:
9388 case R_PPC64_TOC16_LO_DS
:
9389 off
= rel
->r_offset
;
9390 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9391 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9397 if ((opc
& (0x3f << 2)) == (58u << 2))
9402 /* Wrong sort of reloc, or not a ld. We may
9403 as well clear ref_from_discarded too. */
9410 /* For the toc section, we only mark as used if this
9411 entry itself isn't unused. */
9412 else if ((used
[rel
->r_offset
>> 3]
9413 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9416 /* Do all the relocs again, to catch reference
9425 if (elf_section_data (sec
)->relocs
!= relstart
)
9429 /* Merge the used and skip arrays. Assume that TOC
9430 doublewords not appearing as either used or unused belong
9431 to an entry more than one doubleword in size. */
9432 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9433 drop
< skip
+ (toc
->size
+ 7) / 8;
9438 *drop
&= ~ref_from_discarded
;
9439 if ((*drop
& can_optimize
) != 0)
9443 else if ((*drop
& ref_from_discarded
) != 0)
9446 last
= ref_from_discarded
;
9456 bfd_byte
*contents
, *src
;
9458 Elf_Internal_Sym
*sym
;
9459 bfd_boolean local_toc_syms
= FALSE
;
9461 /* Shuffle the toc contents, and at the same time convert the
9462 skip array from booleans into offsets. */
9463 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9466 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9468 for (src
= contents
, off
= 0, drop
= skip
;
9469 src
< contents
+ toc
->size
;
9472 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9477 memcpy (src
- off
, src
, 8);
9481 toc
->rawsize
= toc
->size
;
9482 toc
->size
= src
- contents
- off
;
9484 /* Adjust addends for relocs against the toc section sym,
9485 and optimize any accesses we can. */
9486 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9488 if (sec
->reloc_count
== 0
9489 || discarded_section (sec
))
9492 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9494 if (relstart
== NULL
)
9497 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9499 enum elf_ppc64_reloc_type r_type
;
9500 unsigned long r_symndx
;
9502 struct elf_link_hash_entry
*h
;
9505 r_type
= ELF64_R_TYPE (rel
->r_info
);
9512 case R_PPC64_TOC16_LO
:
9513 case R_PPC64_TOC16_HI
:
9514 case R_PPC64_TOC16_HA
:
9515 case R_PPC64_TOC16_DS
:
9516 case R_PPC64_TOC16_LO_DS
:
9517 case R_PPC64_ADDR64
:
9521 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9522 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9530 val
= h
->root
.u
.def
.value
;
9533 val
= sym
->st_value
;
9535 local_toc_syms
= TRUE
;
9538 val
+= rel
->r_addend
;
9540 if (val
> toc
->rawsize
)
9542 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9544 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9546 Elf_Internal_Rela
*tocrel
9547 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9548 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9552 case R_PPC64_TOC16_HA
:
9553 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9556 case R_PPC64_TOC16_LO_DS
:
9557 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9561 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9563 info
->callbacks
->einfo
9564 /* xgettext:c-format */
9565 (_("%H: %s references "
9566 "optimized away TOC entry\n"),
9567 ibfd
, sec
, rel
->r_offset
,
9568 ppc64_elf_howto_table
[r_type
]->name
);
9569 bfd_set_error (bfd_error_bad_value
);
9572 rel
->r_addend
= tocrel
->r_addend
;
9573 elf_section_data (sec
)->relocs
= relstart
;
9577 if (h
!= NULL
|| sym
->st_value
!= 0)
9580 rel
->r_addend
-= skip
[val
>> 3];
9581 elf_section_data (sec
)->relocs
= relstart
;
9584 if (elf_section_data (sec
)->relocs
!= relstart
)
9588 /* We shouldn't have local or global symbols defined in the TOC,
9589 but handle them anyway. */
9590 if (local_syms
!= NULL
)
9591 for (sym
= local_syms
;
9592 sym
< local_syms
+ symtab_hdr
->sh_info
;
9594 if (sym
->st_value
!= 0
9595 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9599 if (sym
->st_value
> toc
->rawsize
)
9600 i
= toc
->rawsize
>> 3;
9602 i
= sym
->st_value
>> 3;
9604 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9608 (_("%s defined on removed toc entry"),
9609 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9612 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9613 sym
->st_value
= (bfd_vma
) i
<< 3;
9616 sym
->st_value
-= skip
[i
];
9617 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9620 /* Adjust any global syms defined in this toc input section. */
9621 if (toc_inf
.global_toc_syms
)
9624 toc_inf
.skip
= skip
;
9625 toc_inf
.global_toc_syms
= FALSE
;
9626 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9630 if (toc
->reloc_count
!= 0)
9632 Elf_Internal_Shdr
*rel_hdr
;
9633 Elf_Internal_Rela
*wrel
;
9636 /* Remove unused toc relocs, and adjust those we keep. */
9637 if (toc_relocs
== NULL
)
9638 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9640 if (toc_relocs
== NULL
)
9644 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9645 if ((skip
[rel
->r_offset
>> 3]
9646 & (ref_from_discarded
| can_optimize
)) == 0)
9648 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9649 wrel
->r_info
= rel
->r_info
;
9650 wrel
->r_addend
= rel
->r_addend
;
9653 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9654 &local_syms
, NULL
, NULL
))
9657 elf_section_data (toc
)->relocs
= toc_relocs
;
9658 toc
->reloc_count
= wrel
- toc_relocs
;
9659 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9660 sz
= rel_hdr
->sh_entsize
;
9661 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9664 else if (toc_relocs
!= NULL
9665 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9668 if (local_syms
!= NULL
9669 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9671 if (!info
->keep_memory
)
9674 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9682 /* Return true iff input section I references the TOC using
9683 instructions limited to +/-32k offsets. */
9686 ppc64_elf_has_small_toc_reloc (asection
*i
)
9688 return (is_ppc64_elf (i
->owner
)
9689 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9692 /* Allocate space for one GOT entry. */
9695 allocate_got (struct elf_link_hash_entry
*h
,
9696 struct bfd_link_info
*info
,
9697 struct got_entry
*gent
)
9699 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9700 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9701 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9703 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9704 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9705 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9707 gent
->got
.offset
= got
->size
;
9708 got
->size
+= entsize
;
9710 if (h
->type
== STT_GNU_IFUNC
)
9712 htab
->elf
.irelplt
->size
+= rentsize
;
9713 htab
->got_reli_size
+= rentsize
;
9715 else if ((bfd_link_pic (info
)
9716 || (htab
->elf
.dynamic_sections_created
9718 && !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9719 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9721 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9722 relgot
->size
+= rentsize
;
9726 /* This function merges got entries in the same toc group. */
9729 merge_got_entries (struct got_entry
**pent
)
9731 struct got_entry
*ent
, *ent2
;
9733 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9734 if (!ent
->is_indirect
)
9735 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9736 if (!ent2
->is_indirect
9737 && ent2
->addend
== ent
->addend
9738 && ent2
->tls_type
== ent
->tls_type
9739 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9741 ent2
->is_indirect
= TRUE
;
9742 ent2
->got
.ent
= ent
;
9746 /* If H is undefined weak, make it dynamic if that makes sense. */
9749 ensure_undefweak_dynamic (struct bfd_link_info
*info
,
9750 struct elf_link_hash_entry
*h
)
9752 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
9754 if (htab
->dynamic_sections_created
9755 && info
->dynamic_undefined_weak
!= 0
9756 && h
->root
.type
== bfd_link_hash_undefweak
9759 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9760 return bfd_elf_link_record_dynamic_symbol (info
, h
);
9764 /* Allocate space in .plt, .got and associated reloc sections for
9768 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9770 struct bfd_link_info
*info
;
9771 struct ppc_link_hash_table
*htab
;
9773 struct ppc_link_hash_entry
*eh
;
9774 struct got_entry
**pgent
, *gent
;
9776 if (h
->root
.type
== bfd_link_hash_indirect
)
9779 info
= (struct bfd_link_info
*) inf
;
9780 htab
= ppc_hash_table (info
);
9784 eh
= (struct ppc_link_hash_entry
*) h
;
9785 /* Run through the TLS GD got entries first if we're changing them
9787 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9788 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9789 if (gent
->got
.refcount
> 0
9790 && (gent
->tls_type
& TLS_GD
) != 0)
9792 /* This was a GD entry that has been converted to TPREL. If
9793 there happens to be a TPREL entry we can use that one. */
9794 struct got_entry
*ent
;
9795 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9796 if (ent
->got
.refcount
> 0
9797 && (ent
->tls_type
& TLS_TPREL
) != 0
9798 && ent
->addend
== gent
->addend
9799 && ent
->owner
== gent
->owner
)
9801 gent
->got
.refcount
= 0;
9805 /* If not, then we'll be using our own TPREL entry. */
9806 if (gent
->got
.refcount
!= 0)
9807 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9810 /* Remove any list entry that won't generate a word in the GOT before
9811 we call merge_got_entries. Otherwise we risk merging to empty
9813 pgent
= &h
->got
.glist
;
9814 while ((gent
= *pgent
) != NULL
)
9815 if (gent
->got
.refcount
> 0)
9817 if ((gent
->tls_type
& TLS_LD
) != 0
9820 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9821 *pgent
= gent
->next
;
9824 pgent
= &gent
->next
;
9827 *pgent
= gent
->next
;
9829 if (!htab
->do_multi_toc
)
9830 merge_got_entries (&h
->got
.glist
);
9832 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9833 if (!gent
->is_indirect
)
9835 /* Make sure this symbol is output as a dynamic symbol.
9836 Undefined weak syms won't yet be marked as dynamic. */
9837 if (!ensure_undefweak_dynamic (info
, h
))
9840 if (!is_ppc64_elf (gent
->owner
))
9843 allocate_got (h
, info
, gent
);
9846 /* If no dynamic sections we can't have dynamic relocs, except for
9847 IFUNCs which are handled even in static executables. */
9848 if (!htab
->elf
.dynamic_sections_created
9849 && h
->type
!= STT_GNU_IFUNC
)
9850 eh
->dyn_relocs
= NULL
;
9852 /* Also discard relocs on undefined weak syms with non-default
9853 visibility, or when dynamic_undefined_weak says so. */
9854 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9855 eh
->dyn_relocs
= NULL
;
9857 if (eh
->dyn_relocs
!= NULL
)
9859 struct elf_dyn_relocs
*p
, **pp
;
9861 /* In the shared -Bsymbolic case, discard space allocated for
9862 dynamic pc-relative relocs against symbols which turn out to
9863 be defined in regular objects. For the normal shared case,
9864 discard space for relocs that have become local due to symbol
9865 visibility changes. */
9867 if (bfd_link_pic (info
))
9869 /* Relocs that use pc_count are those that appear on a call
9870 insn, or certain REL relocs (see must_be_dyn_reloc) that
9871 can be generated via assembly. We want calls to
9872 protected symbols to resolve directly to the function
9873 rather than going via the plt. If people want function
9874 pointer comparisons to work as expected then they should
9875 avoid writing weird assembly. */
9876 if (SYMBOL_CALLS_LOCAL (info
, h
))
9878 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9880 p
->count
-= p
->pc_count
;
9889 if (eh
->dyn_relocs
!= NULL
)
9891 /* Make sure this symbol is output as a dynamic symbol.
9892 Undefined weak syms won't yet be marked as dynamic. */
9893 if (!ensure_undefweak_dynamic (info
, h
))
9897 else if (h
->type
== STT_GNU_IFUNC
)
9899 /* A plt entry is always created when making direct calls to
9900 an ifunc, even when building a static executable, but
9901 that doesn't cover all cases. We may have only an ifunc
9902 initialised function pointer for a given ifunc symbol.
9904 For ELFv2, dynamic relocations are not required when
9905 generating a global entry PLT stub. */
9906 if (abiversion (info
->output_bfd
) >= 2)
9908 if (global_entry_stub (h
))
9909 eh
->dyn_relocs
= NULL
;
9912 /* For ELFv1 we have function descriptors. Descriptors need
9913 to be treated like PLT entries and thus have dynamic
9914 relocations. One exception is when the function
9915 descriptor is copied into .dynbss (which should only
9916 happen with ancient versions of gcc). */
9917 else if (h
->needs_copy
)
9918 eh
->dyn_relocs
= NULL
;
9920 else if (ELIMINATE_COPY_RELOCS
)
9922 /* For the non-pic case, discard space for relocs against
9923 symbols which turn out to need copy relocs or are not
9928 /* Make sure this symbol is output as a dynamic symbol.
9929 Undefined weak syms won't yet be marked as dynamic. */
9930 if (!ensure_undefweak_dynamic (info
, h
))
9933 if (h
->dynindx
== -1)
9934 eh
->dyn_relocs
= NULL
;
9937 eh
->dyn_relocs
= NULL
;
9940 /* Finally, allocate space. */
9941 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9943 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9944 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9945 sreloc
= htab
->elf
.irelplt
;
9946 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9950 if ((htab
->elf
.dynamic_sections_created
9951 && h
->dynindx
!= -1)
9952 || h
->type
== STT_GNU_IFUNC
)
9954 struct plt_entry
*pent
;
9955 bfd_boolean doneone
= FALSE
;
9956 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9957 if (pent
->plt
.refcount
> 0)
9959 if (!htab
->elf
.dynamic_sections_created
9960 || h
->dynindx
== -1)
9963 pent
->plt
.offset
= s
->size
;
9964 s
->size
+= PLT_ENTRY_SIZE (htab
);
9965 s
= htab
->elf
.irelplt
;
9969 /* If this is the first .plt entry, make room for the special
9973 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9975 pent
->plt
.offset
= s
->size
;
9977 /* Make room for this entry. */
9978 s
->size
+= PLT_ENTRY_SIZE (htab
);
9980 /* Make room for the .glink code. */
9983 s
->size
+= GLINK_CALL_STUB_SIZE
;
9986 /* We need bigger stubs past index 32767. */
9987 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9994 /* We also need to make an entry in the .rela.plt section. */
9995 s
= htab
->elf
.srelplt
;
9997 s
->size
+= sizeof (Elf64_External_Rela
);
10001 pent
->plt
.offset
= (bfd_vma
) -1;
10004 h
->plt
.plist
= NULL
;
10010 h
->plt
.plist
= NULL
;
10017 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10018 to set up space for global entry stubs. These are put in glink,
10019 after the branch table. */
10022 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
10024 struct bfd_link_info
*info
;
10025 struct ppc_link_hash_table
*htab
;
10026 struct plt_entry
*pent
;
10029 if (h
->root
.type
== bfd_link_hash_indirect
)
10032 if (!h
->pointer_equality_needed
)
10035 if (h
->def_regular
)
10039 htab
= ppc_hash_table (info
);
10044 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
10045 if (pent
->plt
.offset
!= (bfd_vma
) -1
10046 && pent
->addend
== 0)
10048 /* For ELFv2, if this symbol is not defined in a regular file
10049 and we are not generating a shared library or pie, then we
10050 need to define the symbol in the executable on a call stub.
10051 This is to avoid text relocations. */
10052 s
->size
= (s
->size
+ 15) & -16;
10053 h
->root
.type
= bfd_link_hash_defined
;
10054 h
->root
.u
.def
.section
= s
;
10055 h
->root
.u
.def
.value
= s
->size
;
10062 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10063 read-only sections. */
10066 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
10068 if (h
->root
.type
== bfd_link_hash_indirect
)
10071 if (readonly_dynrelocs (h
))
10073 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
10075 /* Not an error, just cut short the traversal. */
10081 /* Set the sizes of the dynamic sections. */
10084 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
10085 struct bfd_link_info
*info
)
10087 struct ppc_link_hash_table
*htab
;
10090 bfd_boolean relocs
;
10092 struct got_entry
*first_tlsld
;
10094 htab
= ppc_hash_table (info
);
10098 dynobj
= htab
->elf
.dynobj
;
10099 if (dynobj
== NULL
)
10102 if (htab
->elf
.dynamic_sections_created
)
10104 /* Set the contents of the .interp section to the interpreter. */
10105 if (bfd_link_executable (info
) && !info
->nointerp
)
10107 s
= bfd_get_linker_section (dynobj
, ".interp");
10110 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10111 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10115 /* Set up .got offsets for local syms, and space for local dynamic
10117 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10119 struct got_entry
**lgot_ents
;
10120 struct got_entry
**end_lgot_ents
;
10121 struct plt_entry
**local_plt
;
10122 struct plt_entry
**end_local_plt
;
10123 unsigned char *lgot_masks
;
10124 bfd_size_type locsymcount
;
10125 Elf_Internal_Shdr
*symtab_hdr
;
10127 if (!is_ppc64_elf (ibfd
))
10130 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10132 struct ppc_dyn_relocs
*p
;
10134 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10136 if (!bfd_is_abs_section (p
->sec
)
10137 && bfd_is_abs_section (p
->sec
->output_section
))
10139 /* Input section has been discarded, either because
10140 it is a copy of a linkonce section or due to
10141 linker script /DISCARD/, so we'll be discarding
10144 else if (p
->count
!= 0)
10146 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
10148 srel
= htab
->elf
.irelplt
;
10149 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
10150 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10151 info
->flags
|= DF_TEXTREL
;
10156 lgot_ents
= elf_local_got_ents (ibfd
);
10160 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10161 locsymcount
= symtab_hdr
->sh_info
;
10162 end_lgot_ents
= lgot_ents
+ locsymcount
;
10163 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10164 end_local_plt
= local_plt
+ locsymcount
;
10165 lgot_masks
= (unsigned char *) end_local_plt
;
10166 s
= ppc64_elf_tdata (ibfd
)->got
;
10167 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10169 struct got_entry
**pent
, *ent
;
10172 while ((ent
= *pent
) != NULL
)
10173 if (ent
->got
.refcount
> 0)
10175 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
10177 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
10182 unsigned int ent_size
= 8;
10183 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
10185 ent
->got
.offset
= s
->size
;
10186 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10191 s
->size
+= ent_size
;
10192 if ((*lgot_masks
& PLT_IFUNC
) != 0)
10194 htab
->elf
.irelplt
->size
+= rel_size
;
10195 htab
->got_reli_size
+= rel_size
;
10197 else if (bfd_link_pic (info
))
10199 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10200 srel
->size
+= rel_size
;
10209 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10210 for (; local_plt
< end_local_plt
; ++local_plt
)
10212 struct plt_entry
*ent
;
10214 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
10215 if (ent
->plt
.refcount
> 0)
10217 s
= htab
->elf
.iplt
;
10218 ent
->plt
.offset
= s
->size
;
10219 s
->size
+= PLT_ENTRY_SIZE (htab
);
10221 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
10224 ent
->plt
.offset
= (bfd_vma
) -1;
10228 /* Allocate global sym .plt and .got entries, and space for global
10229 sym dynamic relocs. */
10230 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
10231 /* Stash the end of glink branch table. */
10232 if (htab
->glink
!= NULL
)
10233 htab
->glink
->rawsize
= htab
->glink
->size
;
10235 if (!htab
->opd_abi
&& !bfd_link_pic (info
))
10236 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
10238 first_tlsld
= NULL
;
10239 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10241 struct got_entry
*ent
;
10243 if (!is_ppc64_elf (ibfd
))
10246 ent
= ppc64_tlsld_got (ibfd
);
10247 if (ent
->got
.refcount
> 0)
10249 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
10251 ent
->is_indirect
= TRUE
;
10252 ent
->got
.ent
= first_tlsld
;
10256 if (first_tlsld
== NULL
)
10258 s
= ppc64_elf_tdata (ibfd
)->got
;
10259 ent
->got
.offset
= s
->size
;
10262 if (bfd_link_pic (info
))
10264 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10265 srel
->size
+= sizeof (Elf64_External_Rela
);
10270 ent
->got
.offset
= (bfd_vma
) -1;
10273 /* We now have determined the sizes of the various dynamic sections.
10274 Allocate memory for them. */
10276 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10278 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10281 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
10282 /* These haven't been allocated yet; don't strip. */
10284 else if (s
== htab
->elf
.sgot
10285 || s
== htab
->elf
.splt
10286 || s
== htab
->elf
.iplt
10287 || s
== htab
->glink
10288 || s
== htab
->elf
.sdynbss
10289 || s
== htab
->elf
.sdynrelro
)
10291 /* Strip this section if we don't need it; see the
10294 else if (s
== htab
->glink_eh_frame
)
10296 if (!bfd_is_abs_section (s
->output_section
))
10297 /* Not sized yet. */
10300 else if (CONST_STRNEQ (s
->name
, ".rela"))
10304 if (s
!= htab
->elf
.srelplt
)
10307 /* We use the reloc_count field as a counter if we need
10308 to copy relocs into the output file. */
10309 s
->reloc_count
= 0;
10314 /* It's not one of our sections, so don't allocate space. */
10320 /* If we don't need this section, strip it from the
10321 output file. This is mostly to handle .rela.bss and
10322 .rela.plt. We must create both sections in
10323 create_dynamic_sections, because they must be created
10324 before the linker maps input sections to output
10325 sections. The linker does that before
10326 adjust_dynamic_symbol is called, and it is that
10327 function which decides whether anything needs to go
10328 into these sections. */
10329 s
->flags
|= SEC_EXCLUDE
;
10333 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10336 /* Allocate memory for the section contents. We use bfd_zalloc
10337 here in case unused entries are not reclaimed before the
10338 section's contents are written out. This should not happen,
10339 but this way if it does we get a R_PPC64_NONE reloc in .rela
10340 sections instead of garbage.
10341 We also rely on the section contents being zero when writing
10342 the GOT and .dynrelro. */
10343 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10344 if (s
->contents
== NULL
)
10348 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10350 if (!is_ppc64_elf (ibfd
))
10353 s
= ppc64_elf_tdata (ibfd
)->got
;
10354 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
10357 s
->flags
|= SEC_EXCLUDE
;
10360 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10361 if (s
->contents
== NULL
)
10365 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10369 s
->flags
|= SEC_EXCLUDE
;
10372 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10373 if (s
->contents
== NULL
)
10376 s
->reloc_count
= 0;
10381 if (htab
->elf
.dynamic_sections_created
)
10383 bfd_boolean tls_opt
;
10385 /* Add some entries to the .dynamic section. We fill in the
10386 values later, in ppc64_elf_finish_dynamic_sections, but we
10387 must add the entries now so that we get the correct size for
10388 the .dynamic section. The DT_DEBUG entry is filled in by the
10389 dynamic linker and used by the debugger. */
10390 #define add_dynamic_entry(TAG, VAL) \
10391 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10393 if (bfd_link_executable (info
))
10395 if (!add_dynamic_entry (DT_DEBUG
, 0))
10399 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10401 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10402 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10403 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10404 || !add_dynamic_entry (DT_JMPREL
, 0)
10405 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10409 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10411 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10412 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10416 tls_opt
= (htab
->params
->tls_get_addr_opt
10417 && htab
->tls_get_addr_fd
!= NULL
10418 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10419 if (tls_opt
|| !htab
->opd_abi
)
10421 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10427 if (!add_dynamic_entry (DT_RELA
, 0)
10428 || !add_dynamic_entry (DT_RELASZ
, 0)
10429 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10432 /* If any dynamic relocs apply to a read-only section,
10433 then we need a DT_TEXTREL entry. */
10434 if ((info
->flags
& DF_TEXTREL
) == 0)
10435 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10437 if ((info
->flags
& DF_TEXTREL
) != 0)
10439 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10444 #undef add_dynamic_entry
10449 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10452 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10454 if (h
->plt
.plist
!= NULL
10456 && !h
->pointer_equality_needed
)
10459 return _bfd_elf_hash_symbol (h
);
10462 /* Determine the type of stub needed, if any, for a call. */
10464 static inline enum ppc_stub_type
10465 ppc_type_of_stub (asection
*input_sec
,
10466 const Elf_Internal_Rela
*rel
,
10467 struct ppc_link_hash_entry
**hash
,
10468 struct plt_entry
**plt_ent
,
10469 bfd_vma destination
,
10470 unsigned long local_off
)
10472 struct ppc_link_hash_entry
*h
= *hash
;
10474 bfd_vma branch_offset
;
10475 bfd_vma max_branch_offset
;
10476 enum elf_ppc64_reloc_type r_type
;
10480 struct plt_entry
*ent
;
10481 struct ppc_link_hash_entry
*fdh
= h
;
10483 && h
->oh
->is_func_descriptor
)
10485 fdh
= ppc_follow_link (h
->oh
);
10489 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10490 if (ent
->addend
== rel
->r_addend
10491 && ent
->plt
.offset
!= (bfd_vma
) -1)
10494 return ppc_stub_plt_call
;
10497 /* Here, we know we don't have a plt entry. If we don't have a
10498 either a defined function descriptor or a defined entry symbol
10499 in a regular object file, then it is pointless trying to make
10500 any other type of stub. */
10501 if (!is_static_defined (&fdh
->elf
)
10502 && !is_static_defined (&h
->elf
))
10503 return ppc_stub_none
;
10505 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10507 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10508 struct plt_entry
**local_plt
= (struct plt_entry
**)
10509 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10510 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10512 if (local_plt
[r_symndx
] != NULL
)
10514 struct plt_entry
*ent
;
10516 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10517 if (ent
->addend
== rel
->r_addend
10518 && ent
->plt
.offset
!= (bfd_vma
) -1)
10521 return ppc_stub_plt_call
;
10526 /* Determine where the call point is. */
10527 location
= (input_sec
->output_offset
10528 + input_sec
->output_section
->vma
10531 branch_offset
= destination
- location
;
10532 r_type
= ELF64_R_TYPE (rel
->r_info
);
10534 /* Determine if a long branch stub is needed. */
10535 max_branch_offset
= 1 << 25;
10536 if (r_type
!= R_PPC64_REL24
)
10537 max_branch_offset
= 1 << 15;
10539 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10540 /* We need a stub. Figure out whether a long_branch or plt_branch
10541 is needed later. */
10542 return ppc_stub_long_branch
;
10544 return ppc_stub_none
;
10547 /* With power7 weakly ordered memory model, it is possible for ld.so
10548 to update a plt entry in one thread and have another thread see a
10549 stale zero toc entry. To avoid this we need some sort of acquire
10550 barrier in the call stub. One solution is to make the load of the
10551 toc word seem to appear to depend on the load of the function entry
10552 word. Another solution is to test for r2 being zero, and branch to
10553 the appropriate glink entry if so.
10555 . fake dep barrier compare
10556 . ld 12,xxx(2) ld 12,xxx(2)
10557 . mtctr 12 mtctr 12
10558 . xor 11,12,12 ld 2,xxx+8(2)
10559 . add 2,2,11 cmpldi 2,0
10560 . ld 2,xxx+8(2) bnectr+
10561 . bctr b <glink_entry>
10563 The solution involving the compare turns out to be faster, so
10564 that's what we use unless the branch won't reach. */
10566 #define ALWAYS_USE_FAKE_DEP 0
10567 #define ALWAYS_EMIT_R2SAVE 0
10569 #define PPC_LO(v) ((v) & 0xffff)
10570 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10571 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10573 static inline unsigned int
10574 plt_stub_size (struct ppc_link_hash_table
*htab
,
10575 struct ppc_stub_hash_entry
*stub_entry
,
10578 unsigned size
= 12;
10580 if (ALWAYS_EMIT_R2SAVE
10581 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10583 if (PPC_HA (off
) != 0)
10588 if (htab
->params
->plt_static_chain
)
10590 if (htab
->params
->plt_thread_safe
10591 && htab
->elf
.dynamic_sections_created
10592 && stub_entry
->h
!= NULL
10593 && stub_entry
->h
->elf
.dynindx
!= -1)
10595 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10598 if (stub_entry
->h
!= NULL
10599 && (stub_entry
->h
== htab
->tls_get_addr_fd
10600 || stub_entry
->h
== htab
->tls_get_addr
)
10601 && htab
->params
->tls_get_addr_opt
)
10604 if (ALWAYS_EMIT_R2SAVE
10605 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10611 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10612 then return the padding needed to do so. */
10613 static inline unsigned int
10614 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10615 struct ppc_stub_hash_entry
*stub_entry
,
10618 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10619 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10620 bfd_vma stub_off
= stub_entry
->group
->stub_sec
->size
;
10622 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10623 > ((stub_size
- 1) & -stub_align
))
10624 return stub_align
- (stub_off
& (stub_align
- 1));
10628 /* Build a .plt call stub. */
10630 static inline bfd_byte
*
10631 build_plt_stub (struct ppc_link_hash_table
*htab
,
10632 struct ppc_stub_hash_entry
*stub_entry
,
10633 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10635 bfd
*obfd
= htab
->params
->stub_bfd
;
10636 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10637 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10638 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10639 && htab
->elf
.dynamic_sections_created
10640 && stub_entry
->h
!= NULL
10641 && stub_entry
->h
->elf
.dynindx
!= -1);
10642 bfd_boolean use_fake_dep
= plt_thread_safe
;
10643 bfd_vma cmp_branch_off
= 0;
10645 if (!ALWAYS_USE_FAKE_DEP
10648 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10649 || stub_entry
->h
== htab
->tls_get_addr
)
10650 && htab
->params
->tls_get_addr_opt
))
10652 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10653 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10654 / PLT_ENTRY_SIZE (htab
));
10655 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10658 if (pltindex
> 32768)
10659 glinkoff
+= (pltindex
- 32768) * 4;
10661 + htab
->glink
->output_offset
10662 + htab
->glink
->output_section
->vma
);
10663 from
= (p
- stub_entry
->group
->stub_sec
->contents
10664 + 4 * (ALWAYS_EMIT_R2SAVE
10665 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10666 + 4 * (PPC_HA (offset
) != 0)
10667 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10668 != PPC_HA (offset
))
10669 + 4 * (plt_static_chain
!= 0)
10671 + stub_entry
->group
->stub_sec
->output_offset
10672 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10673 cmp_branch_off
= to
- from
;
10674 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10677 if (PPC_HA (offset
) != 0)
10681 if (ALWAYS_EMIT_R2SAVE
10682 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10683 r
[0].r_offset
+= 4;
10684 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10685 r
[1].r_offset
= r
[0].r_offset
+ 4;
10686 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10687 r
[1].r_addend
= r
[0].r_addend
;
10690 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10692 r
[2].r_offset
= r
[1].r_offset
+ 4;
10693 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10694 r
[2].r_addend
= r
[0].r_addend
;
10698 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10699 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10700 r
[2].r_addend
= r
[0].r_addend
+ 8;
10701 if (plt_static_chain
)
10703 r
[3].r_offset
= r
[2].r_offset
+ 4;
10704 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10705 r
[3].r_addend
= r
[0].r_addend
+ 16;
10710 if (ALWAYS_EMIT_R2SAVE
10711 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10712 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10715 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10716 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10720 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10721 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10724 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10726 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10729 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10734 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10735 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10737 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10738 if (plt_static_chain
)
10739 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10746 if (ALWAYS_EMIT_R2SAVE
10747 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10748 r
[0].r_offset
+= 4;
10749 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10752 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10754 r
[1].r_offset
= r
[0].r_offset
+ 4;
10755 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10756 r
[1].r_addend
= r
[0].r_addend
;
10760 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10761 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10762 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10763 if (plt_static_chain
)
10765 r
[2].r_offset
= r
[1].r_offset
+ 4;
10766 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10767 r
[2].r_addend
= r
[0].r_addend
+ 8;
10772 if (ALWAYS_EMIT_R2SAVE
10773 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10774 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10775 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10777 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10779 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10782 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10787 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10788 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10790 if (plt_static_chain
)
10791 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10792 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10795 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10797 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10798 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10799 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10802 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10806 /* Build a special .plt call stub for __tls_get_addr. */
10808 #define LD_R11_0R3 0xe9630000
10809 #define LD_R12_0R3 0xe9830000
10810 #define MR_R0_R3 0x7c601b78
10811 #define CMPDI_R11_0 0x2c2b0000
10812 #define ADD_R3_R12_R13 0x7c6c6a14
10813 #define BEQLR 0x4d820020
10814 #define MR_R3_R0 0x7c030378
10815 #define STD_R11_0R1 0xf9610000
10816 #define BCTRL 0x4e800421
10817 #define LD_R11_0R1 0xe9610000
10818 #define MTLR_R11 0x7d6803a6
10820 static inline bfd_byte
*
10821 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10822 struct ppc_stub_hash_entry
*stub_entry
,
10823 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10825 bfd
*obfd
= htab
->params
->stub_bfd
;
10827 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10828 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10829 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10830 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10831 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10832 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10833 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10835 r
[0].r_offset
+= 7 * 4;
10836 if (!ALWAYS_EMIT_R2SAVE
10837 && stub_entry
->stub_type
!= ppc_stub_plt_call_r2save
)
10838 return build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10840 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10841 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10844 r
[0].r_offset
+= 2 * 4;
10845 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10846 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10848 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10849 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10850 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10851 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10856 static Elf_Internal_Rela
*
10857 get_relocs (asection
*sec
, int count
)
10859 Elf_Internal_Rela
*relocs
;
10860 struct bfd_elf_section_data
*elfsec_data
;
10862 elfsec_data
= elf_section_data (sec
);
10863 relocs
= elfsec_data
->relocs
;
10864 if (relocs
== NULL
)
10866 bfd_size_type relsize
;
10867 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10868 relocs
= bfd_alloc (sec
->owner
, relsize
);
10869 if (relocs
== NULL
)
10871 elfsec_data
->relocs
= relocs
;
10872 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10873 sizeof (Elf_Internal_Shdr
));
10874 if (elfsec_data
->rela
.hdr
== NULL
)
10876 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10877 * sizeof (Elf64_External_Rela
));
10878 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10879 sec
->reloc_count
= 0;
10881 relocs
+= sec
->reloc_count
;
10882 sec
->reloc_count
+= count
;
10887 get_r2off (struct bfd_link_info
*info
,
10888 struct ppc_stub_hash_entry
*stub_entry
)
10890 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10891 bfd_vma r2off
= htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
;
10895 /* Support linking -R objects. Get the toc pointer from the
10898 if (!htab
->opd_abi
)
10900 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10901 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10903 if (strcmp (opd
->name
, ".opd") != 0
10904 || opd
->reloc_count
!= 0)
10906 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10907 stub_entry
->h
->elf
.root
.root
.string
);
10908 bfd_set_error (bfd_error_bad_value
);
10909 return (bfd_vma
) -1;
10911 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10912 return (bfd_vma
) -1;
10913 r2off
= bfd_get_64 (opd
->owner
, buf
);
10914 r2off
-= elf_gp (info
->output_bfd
);
10916 r2off
-= htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
;
10921 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10923 struct ppc_stub_hash_entry
*stub_entry
;
10924 struct ppc_branch_hash_entry
*br_entry
;
10925 struct bfd_link_info
*info
;
10926 struct ppc_link_hash_table
*htab
;
10931 Elf_Internal_Rela
*r
;
10934 /* Massage our args to the form they really have. */
10935 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10938 htab
= ppc_hash_table (info
);
10942 /* Make a note of the offset within the stubs for this entry. */
10943 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
10944 loc
= stub_entry
->group
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10946 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10947 switch (stub_entry
->stub_type
)
10949 case ppc_stub_long_branch
:
10950 case ppc_stub_long_branch_r2off
:
10951 /* Branches are relative. This is where we are going to. */
10952 dest
= (stub_entry
->target_value
10953 + stub_entry
->target_section
->output_offset
10954 + stub_entry
->target_section
->output_section
->vma
);
10955 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10958 /* And this is where we are coming from. */
10959 off
-= (stub_entry
->stub_offset
10960 + stub_entry
->group
->stub_sec
->output_offset
10961 + stub_entry
->group
->stub_sec
->output_section
->vma
);
10964 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10966 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10968 if (r2off
== (bfd_vma
) -1)
10970 htab
->stub_error
= TRUE
;
10973 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10976 if (PPC_HA (r2off
) != 0)
10978 bfd_put_32 (htab
->params
->stub_bfd
,
10979 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10983 if (PPC_LO (r2off
) != 0)
10985 bfd_put_32 (htab
->params
->stub_bfd
,
10986 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10992 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10994 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10996 info
->callbacks
->einfo
10997 (_("%P: long branch stub `%s' offset overflow\n"),
10998 stub_entry
->root
.string
);
10999 htab
->stub_error
= TRUE
;
11003 if (info
->emitrelocations
)
11005 r
= get_relocs (stub_entry
->group
->stub_sec
, 1);
11008 r
->r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11009 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
11010 r
->r_addend
= dest
;
11011 if (stub_entry
->h
!= NULL
)
11013 struct elf_link_hash_entry
**hashes
;
11014 unsigned long symndx
;
11015 struct ppc_link_hash_entry
*h
;
11017 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
11018 if (hashes
== NULL
)
11020 bfd_size_type hsize
;
11022 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
11023 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
11024 if (hashes
== NULL
)
11026 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
11027 htab
->stub_globals
= 1;
11029 symndx
= htab
->stub_globals
++;
11031 hashes
[symndx
] = &h
->elf
;
11032 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
11033 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
11034 h
= ppc_follow_link (h
->oh
);
11035 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
11036 /* H is an opd symbol. The addend must be zero. */
11040 off
= (h
->elf
.root
.u
.def
.value
11041 + h
->elf
.root
.u
.def
.section
->output_offset
11042 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
11043 r
->r_addend
-= off
;
11049 case ppc_stub_plt_branch
:
11050 case ppc_stub_plt_branch_r2off
:
11051 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11052 stub_entry
->root
.string
+ 9,
11054 if (br_entry
== NULL
)
11056 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
11057 stub_entry
->root
.string
);
11058 htab
->stub_error
= TRUE
;
11062 dest
= (stub_entry
->target_value
11063 + stub_entry
->target_section
->output_offset
11064 + stub_entry
->target_section
->output_section
->vma
);
11065 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11066 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11068 bfd_put_64 (htab
->brlt
->owner
, dest
,
11069 htab
->brlt
->contents
+ br_entry
->offset
);
11071 if (br_entry
->iter
== htab
->stub_iteration
)
11073 br_entry
->iter
= 0;
11075 if (htab
->relbrlt
!= NULL
)
11077 /* Create a reloc for the branch lookup table entry. */
11078 Elf_Internal_Rela rela
;
11081 rela
.r_offset
= (br_entry
->offset
11082 + htab
->brlt
->output_offset
11083 + htab
->brlt
->output_section
->vma
);
11084 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11085 rela
.r_addend
= dest
;
11087 rl
= htab
->relbrlt
->contents
;
11088 rl
+= (htab
->relbrlt
->reloc_count
++
11089 * sizeof (Elf64_External_Rela
));
11090 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
11092 else if (info
->emitrelocations
)
11094 r
= get_relocs (htab
->brlt
, 1);
11097 /* brlt, being SEC_LINKER_CREATED does not go through the
11098 normal reloc processing. Symbols and offsets are not
11099 translated from input file to output file form, so
11100 set up the offset per the output file. */
11101 r
->r_offset
= (br_entry
->offset
11102 + htab
->brlt
->output_offset
11103 + htab
->brlt
->output_section
->vma
);
11104 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
11105 r
->r_addend
= dest
;
11109 dest
= (br_entry
->offset
11110 + htab
->brlt
->output_offset
11111 + htab
->brlt
->output_section
->vma
);
11114 - elf_gp (htab
->brlt
->output_section
->owner
)
11115 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11117 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11119 info
->callbacks
->einfo
11120 (_("%P: linkage table error against `%T'\n"),
11121 stub_entry
->root
.string
);
11122 bfd_set_error (bfd_error_bad_value
);
11123 htab
->stub_error
= TRUE
;
11127 if (info
->emitrelocations
)
11129 r
= get_relocs (stub_entry
->group
->stub_sec
, 1 + (PPC_HA (off
) != 0));
11132 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11133 if (bfd_big_endian (info
->output_bfd
))
11134 r
[0].r_offset
+= 2;
11135 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
11136 r
[0].r_offset
+= 4;
11137 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
11138 r
[0].r_addend
= dest
;
11139 if (PPC_HA (off
) != 0)
11141 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
11142 r
[1].r_offset
= r
[0].r_offset
+ 4;
11143 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
11144 r
[1].r_addend
= r
[0].r_addend
;
11148 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11150 if (PPC_HA (off
) != 0)
11153 bfd_put_32 (htab
->params
->stub_bfd
,
11154 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11156 bfd_put_32 (htab
->params
->stub_bfd
,
11157 LD_R12_0R12
| PPC_LO (off
), loc
);
11162 bfd_put_32 (htab
->params
->stub_bfd
,
11163 LD_R12_0R2
| PPC_LO (off
), loc
);
11168 bfd_vma r2off
= get_r2off (info
, stub_entry
);
11170 if (r2off
== (bfd_vma
) -1)
11172 htab
->stub_error
= TRUE
;
11176 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
11179 if (PPC_HA (off
) != 0)
11182 bfd_put_32 (htab
->params
->stub_bfd
,
11183 ADDIS_R12_R2
| PPC_HA (off
), loc
);
11185 bfd_put_32 (htab
->params
->stub_bfd
,
11186 LD_R12_0R12
| PPC_LO (off
), loc
);
11189 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
11191 if (PPC_HA (r2off
) != 0)
11195 bfd_put_32 (htab
->params
->stub_bfd
,
11196 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
11198 if (PPC_LO (r2off
) != 0)
11202 bfd_put_32 (htab
->params
->stub_bfd
,
11203 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
11207 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
11209 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
11212 case ppc_stub_plt_call
:
11213 case ppc_stub_plt_call_r2save
:
11214 if (stub_entry
->h
!= NULL
11215 && stub_entry
->h
->is_func_descriptor
11216 && stub_entry
->h
->oh
!= NULL
)
11218 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
11220 /* If the old-ABI "dot-symbol" is undefined make it weak so
11221 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11222 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
11223 && (stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11224 || stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defweak
))
11225 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
11228 /* Now build the stub. */
11229 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
11230 if (dest
>= (bfd_vma
) -2)
11233 plt
= htab
->elf
.splt
;
11234 if (!htab
->elf
.dynamic_sections_created
11235 || stub_entry
->h
== NULL
11236 || stub_entry
->h
->elf
.dynindx
== -1)
11237 plt
= htab
->elf
.iplt
;
11239 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
11241 if (stub_entry
->h
== NULL
11242 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
11244 Elf_Internal_Rela rela
;
11247 rela
.r_offset
= dest
;
11249 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
11251 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
11252 rela
.r_addend
= (stub_entry
->target_value
11253 + stub_entry
->target_section
->output_offset
11254 + stub_entry
->target_section
->output_section
->vma
);
11256 rl
= (htab
->elf
.irelplt
->contents
11257 + (htab
->elf
.irelplt
->reloc_count
++
11258 * sizeof (Elf64_External_Rela
)));
11259 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
11260 stub_entry
->plt_ent
->plt
.offset
|= 1;
11261 htab
->local_ifunc_resolver
= 1;
11265 - elf_gp (plt
->output_section
->owner
)
11266 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11268 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
11270 info
->callbacks
->einfo
11271 /* xgettext:c-format */
11272 (_("%P: linkage table error against `%T'\n"),
11273 stub_entry
->h
!= NULL
11274 ? stub_entry
->h
->elf
.root
.root
.string
11276 bfd_set_error (bfd_error_bad_value
);
11277 htab
->stub_error
= TRUE
;
11281 if (htab
->params
->plt_stub_align
!= 0)
11283 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
11285 stub_entry
->group
->stub_sec
->size
+= pad
;
11286 stub_entry
->stub_offset
= stub_entry
->group
->stub_sec
->size
;
11291 if (info
->emitrelocations
)
11293 r
= get_relocs (stub_entry
->group
->stub_sec
,
11294 ((PPC_HA (off
) != 0)
11296 ? 2 + (htab
->params
->plt_static_chain
11297 && PPC_HA (off
+ 16) == PPC_HA (off
))
11301 r
[0].r_offset
= loc
- stub_entry
->group
->stub_sec
->contents
;
11302 if (bfd_big_endian (info
->output_bfd
))
11303 r
[0].r_offset
+= 2;
11304 r
[0].r_addend
= dest
;
11306 if (stub_entry
->h
!= NULL
11307 && (stub_entry
->h
== htab
->tls_get_addr_fd
11308 || stub_entry
->h
== htab
->tls_get_addr
)
11309 && htab
->params
->tls_get_addr_opt
)
11310 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
11312 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
11316 case ppc_stub_save_res
:
11324 stub_entry
->group
->stub_sec
->size
+= size
;
11326 if (htab
->params
->emit_stub_syms
)
11328 struct elf_link_hash_entry
*h
;
11331 const char *const stub_str
[] = { "long_branch",
11332 "long_branch_r2off",
11334 "plt_branch_r2off",
11338 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
11339 len2
= strlen (stub_entry
->root
.string
);
11340 name
= bfd_malloc (len1
+ len2
+ 2);
11343 memcpy (name
, stub_entry
->root
.string
, 9);
11344 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
11345 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
11346 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
11349 if (h
->root
.type
== bfd_link_hash_new
)
11351 h
->root
.type
= bfd_link_hash_defined
;
11352 h
->root
.u
.def
.section
= stub_entry
->group
->stub_sec
;
11353 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
11354 h
->ref_regular
= 1;
11355 h
->def_regular
= 1;
11356 h
->ref_regular_nonweak
= 1;
11357 h
->forced_local
= 1;
11359 h
->root
.linker_def
= 1;
11366 /* As above, but don't actually build the stub. Just bump offset so
11367 we know stub section sizes, and select plt_branch stubs where
11368 long_branch stubs won't do. */
11371 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
11373 struct ppc_stub_hash_entry
*stub_entry
;
11374 struct bfd_link_info
*info
;
11375 struct ppc_link_hash_table
*htab
;
11379 /* Massage our args to the form they really have. */
11380 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
11383 htab
= ppc_hash_table (info
);
11387 if (stub_entry
->h
!= NULL
11388 && stub_entry
->h
->save_res
11389 && stub_entry
->h
->elf
.root
.type
== bfd_link_hash_defined
11390 && stub_entry
->h
->elf
.root
.u
.def
.section
== htab
->sfpr
)
11392 /* Don't make stubs to out-of-line register save/restore
11393 functions. Instead, emit copies of the functions. */
11394 stub_entry
->group
->needs_save_res
= 1;
11395 stub_entry
->stub_type
= ppc_stub_save_res
;
11399 if (stub_entry
->stub_type
== ppc_stub_plt_call
11400 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11403 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11404 if (off
>= (bfd_vma
) -2)
11406 plt
= htab
->elf
.splt
;
11407 if (!htab
->elf
.dynamic_sections_created
11408 || stub_entry
->h
== NULL
11409 || stub_entry
->h
->elf
.dynindx
== -1)
11410 plt
= htab
->elf
.iplt
;
11411 off
+= (plt
->output_offset
11412 + plt
->output_section
->vma
11413 - elf_gp (plt
->output_section
->owner
)
11414 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11416 size
= plt_stub_size (htab
, stub_entry
, off
);
11417 if (stub_entry
->h
!= NULL
11418 && (stub_entry
->h
== htab
->tls_get_addr_fd
11419 || stub_entry
->h
== htab
->tls_get_addr
)
11420 && htab
->params
->tls_get_addr_opt
11421 && (ALWAYS_EMIT_R2SAVE
11422 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
11423 stub_entry
->group
->tls_get_addr_opt_bctrl
11424 = stub_entry
->group
->stub_sec
->size
+ size
- 5 * 4;
11426 if (htab
->params
->plt_stub_align
)
11427 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11428 if (info
->emitrelocations
)
11430 stub_entry
->group
->stub_sec
->reloc_count
11431 += ((PPC_HA (off
) != 0)
11433 ? 2 + (htab
->params
->plt_static_chain
11434 && PPC_HA (off
+ 16) == PPC_HA (off
))
11436 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11441 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11444 bfd_vma local_off
= 0;
11446 off
= (stub_entry
->target_value
11447 + stub_entry
->target_section
->output_offset
11448 + stub_entry
->target_section
->output_section
->vma
);
11449 off
-= (stub_entry
->group
->stub_sec
->size
11450 + stub_entry
->group
->stub_sec
->output_offset
11451 + stub_entry
->group
->stub_sec
->output_section
->vma
);
11453 /* Reset the stub type from the plt variant in case we now
11454 can reach with a shorter stub. */
11455 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11456 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11459 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11461 r2off
= get_r2off (info
, stub_entry
);
11462 if (r2off
== (bfd_vma
) -1)
11464 htab
->stub_error
= TRUE
;
11468 if (PPC_HA (r2off
) != 0)
11470 if (PPC_LO (r2off
) != 0)
11475 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11477 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11478 Do the same for -R objects without function descriptors. */
11479 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11480 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11482 && htab
->sec_info
[stub_entry
->target_section
->id
].toc_off
== 0))
11484 struct ppc_branch_hash_entry
*br_entry
;
11486 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11487 stub_entry
->root
.string
+ 9,
11489 if (br_entry
== NULL
)
11491 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11492 stub_entry
->root
.string
);
11493 htab
->stub_error
= TRUE
;
11497 if (br_entry
->iter
!= htab
->stub_iteration
)
11499 br_entry
->iter
= htab
->stub_iteration
;
11500 br_entry
->offset
= htab
->brlt
->size
;
11501 htab
->brlt
->size
+= 8;
11503 if (htab
->relbrlt
!= NULL
)
11504 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11505 else if (info
->emitrelocations
)
11507 htab
->brlt
->reloc_count
+= 1;
11508 htab
->brlt
->flags
|= SEC_RELOC
;
11512 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11513 off
= (br_entry
->offset
11514 + htab
->brlt
->output_offset
11515 + htab
->brlt
->output_section
->vma
11516 - elf_gp (htab
->brlt
->output_section
->owner
)
11517 - htab
->sec_info
[stub_entry
->group
->link_sec
->id
].toc_off
);
11519 if (info
->emitrelocations
)
11521 stub_entry
->group
->stub_sec
->reloc_count
11522 += 1 + (PPC_HA (off
) != 0);
11523 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11526 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11529 if (PPC_HA (off
) != 0)
11535 if (PPC_HA (off
) != 0)
11538 if (PPC_HA (r2off
) != 0)
11540 if (PPC_LO (r2off
) != 0)
11544 else if (info
->emitrelocations
)
11546 stub_entry
->group
->stub_sec
->reloc_count
+= 1;
11547 stub_entry
->group
->stub_sec
->flags
|= SEC_RELOC
;
11551 stub_entry
->group
->stub_sec
->size
+= size
;
11555 /* Set up various things so that we can make a list of input sections
11556 for each output section included in the link. Returns -1 on error,
11557 0 when no stubs will be needed, and 1 on success. */
11560 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11564 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11569 htab
->sec_info_arr_size
= bfd_get_next_section_id ();
11570 amt
= sizeof (*htab
->sec_info
) * (htab
->sec_info_arr_size
);
11571 htab
->sec_info
= bfd_zmalloc (amt
);
11572 if (htab
->sec_info
== NULL
)
11575 /* Set toc_off for com, und, abs and ind sections. */
11576 for (id
= 0; id
< 3; id
++)
11577 htab
->sec_info
[id
].toc_off
= TOC_BASE_OFF
;
11582 /* Set up for first pass at multitoc partitioning. */
11585 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11587 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11589 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11590 htab
->toc_bfd
= NULL
;
11591 htab
->toc_first_sec
= NULL
;
11594 /* The linker repeatedly calls this function for each TOC input section
11595 and linker generated GOT section. Group input bfds such that the toc
11596 within a group is less than 64k in size. */
11599 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11601 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11602 bfd_vma addr
, off
, limit
;
11607 if (!htab
->second_toc_pass
)
11609 /* Keep track of the first .toc or .got section for this input bfd. */
11610 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11614 htab
->toc_bfd
= isec
->owner
;
11615 htab
->toc_first_sec
= isec
;
11618 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11619 off
= addr
- htab
->toc_curr
;
11620 limit
= 0x80008000;
11621 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11623 if (off
+ isec
->size
> limit
)
11625 addr
= (htab
->toc_first_sec
->output_offset
11626 + htab
->toc_first_sec
->output_section
->vma
);
11627 htab
->toc_curr
= addr
;
11628 htab
->toc_curr
&= -TOC_BASE_ALIGN
;
11631 /* toc_curr is the base address of this toc group. Set elf_gp
11632 for the input section to be the offset relative to the
11633 output toc base plus 0x8000. Making the input elf_gp an
11634 offset allows us to move the toc as a whole without
11635 recalculating input elf_gp. */
11636 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11637 off
+= TOC_BASE_OFF
;
11639 /* Die if someone uses a linker script that doesn't keep input
11640 file .toc and .got together. */
11642 && elf_gp (isec
->owner
) != 0
11643 && elf_gp (isec
->owner
) != off
)
11646 elf_gp (isec
->owner
) = off
;
11650 /* During the second pass toc_first_sec points to the start of
11651 a toc group, and toc_curr is used to track the old elf_gp.
11652 We use toc_bfd to ensure we only look at each bfd once. */
11653 if (htab
->toc_bfd
== isec
->owner
)
11655 htab
->toc_bfd
= isec
->owner
;
11657 if (htab
->toc_first_sec
== NULL
11658 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11660 htab
->toc_curr
= elf_gp (isec
->owner
);
11661 htab
->toc_first_sec
= isec
;
11663 addr
= (htab
->toc_first_sec
->output_offset
11664 + htab
->toc_first_sec
->output_section
->vma
);
11665 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11666 elf_gp (isec
->owner
) = off
;
11671 /* Called via elf_link_hash_traverse to merge GOT entries for global
11675 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11677 if (h
->root
.type
== bfd_link_hash_indirect
)
11680 merge_got_entries (&h
->got
.glist
);
11685 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11689 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11691 struct got_entry
*gent
;
11693 if (h
->root
.type
== bfd_link_hash_indirect
)
11696 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11697 if (!gent
->is_indirect
)
11698 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11702 /* Called on the first multitoc pass after the last call to
11703 ppc64_elf_next_toc_section. This function removes duplicate GOT
11707 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11709 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11710 struct bfd
*ibfd
, *ibfd2
;
11711 bfd_boolean done_something
;
11713 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11715 if (!htab
->do_multi_toc
)
11718 /* Merge global sym got entries within a toc group. */
11719 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11721 /* And tlsld_got. */
11722 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11724 struct got_entry
*ent
, *ent2
;
11726 if (!is_ppc64_elf (ibfd
))
11729 ent
= ppc64_tlsld_got (ibfd
);
11730 if (!ent
->is_indirect
11731 && ent
->got
.offset
!= (bfd_vma
) -1)
11733 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11735 if (!is_ppc64_elf (ibfd2
))
11738 ent2
= ppc64_tlsld_got (ibfd2
);
11739 if (!ent2
->is_indirect
11740 && ent2
->got
.offset
!= (bfd_vma
) -1
11741 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11743 ent2
->is_indirect
= TRUE
;
11744 ent2
->got
.ent
= ent
;
11750 /* Zap sizes of got sections. */
11751 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11752 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11753 htab
->got_reli_size
= 0;
11755 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11757 asection
*got
, *relgot
;
11759 if (!is_ppc64_elf (ibfd
))
11762 got
= ppc64_elf_tdata (ibfd
)->got
;
11765 got
->rawsize
= got
->size
;
11767 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11768 relgot
->rawsize
= relgot
->size
;
11773 /* Now reallocate the got, local syms first. We don't need to
11774 allocate section contents again since we never increase size. */
11775 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11777 struct got_entry
**lgot_ents
;
11778 struct got_entry
**end_lgot_ents
;
11779 struct plt_entry
**local_plt
;
11780 struct plt_entry
**end_local_plt
;
11781 unsigned char *lgot_masks
;
11782 bfd_size_type locsymcount
;
11783 Elf_Internal_Shdr
*symtab_hdr
;
11786 if (!is_ppc64_elf (ibfd
))
11789 lgot_ents
= elf_local_got_ents (ibfd
);
11793 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11794 locsymcount
= symtab_hdr
->sh_info
;
11795 end_lgot_ents
= lgot_ents
+ locsymcount
;
11796 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11797 end_local_plt
= local_plt
+ locsymcount
;
11798 lgot_masks
= (unsigned char *) end_local_plt
;
11799 s
= ppc64_elf_tdata (ibfd
)->got
;
11800 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11802 struct got_entry
*ent
;
11804 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11806 unsigned int ent_size
= 8;
11807 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11809 ent
->got
.offset
= s
->size
;
11810 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11815 s
->size
+= ent_size
;
11816 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11818 htab
->elf
.irelplt
->size
+= rel_size
;
11819 htab
->got_reli_size
+= rel_size
;
11821 else if (bfd_link_pic (info
))
11823 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11824 srel
->size
+= rel_size
;
11830 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11832 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11834 struct got_entry
*ent
;
11836 if (!is_ppc64_elf (ibfd
))
11839 ent
= ppc64_tlsld_got (ibfd
);
11840 if (!ent
->is_indirect
11841 && ent
->got
.offset
!= (bfd_vma
) -1)
11843 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11844 ent
->got
.offset
= s
->size
;
11846 if (bfd_link_pic (info
))
11848 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11849 srel
->size
+= sizeof (Elf64_External_Rela
);
11854 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11855 if (!done_something
)
11856 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11860 if (!is_ppc64_elf (ibfd
))
11863 got
= ppc64_elf_tdata (ibfd
)->got
;
11866 done_something
= got
->rawsize
!= got
->size
;
11867 if (done_something
)
11872 if (done_something
)
11873 (*htab
->params
->layout_sections_again
) ();
11875 /* Set up for second pass over toc sections to recalculate elf_gp
11876 on input sections. */
11877 htab
->toc_bfd
= NULL
;
11878 htab
->toc_first_sec
= NULL
;
11879 htab
->second_toc_pass
= TRUE
;
11880 return done_something
;
11883 /* Called after second pass of multitoc partitioning. */
11886 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11888 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11890 /* After the second pass, toc_curr tracks the TOC offset used
11891 for code sections below in ppc64_elf_next_input_section. */
11892 htab
->toc_curr
= TOC_BASE_OFF
;
11895 /* No toc references were found in ISEC. If the code in ISEC makes no
11896 calls, then there's no need to use toc adjusting stubs when branching
11897 into ISEC. Actually, indirect calls from ISEC are OK as they will
11898 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11899 needed, and 2 if a cyclical call-graph was found but no other reason
11900 for a stub was detected. If called from the top level, a return of
11901 2 means the same as a return of 0. */
11904 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11908 /* Mark this section as checked. */
11909 isec
->call_check_done
= 1;
11911 /* We know none of our code bearing sections will need toc stubs. */
11912 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11915 if (isec
->size
== 0)
11918 if (isec
->output_section
== NULL
)
11922 if (isec
->reloc_count
!= 0)
11924 Elf_Internal_Rela
*relstart
, *rel
;
11925 Elf_Internal_Sym
*local_syms
;
11926 struct ppc_link_hash_table
*htab
;
11928 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11929 info
->keep_memory
);
11930 if (relstart
== NULL
)
11933 /* Look for branches to outside of this section. */
11935 htab
= ppc_hash_table (info
);
11939 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11941 enum elf_ppc64_reloc_type r_type
;
11942 unsigned long r_symndx
;
11943 struct elf_link_hash_entry
*h
;
11944 struct ppc_link_hash_entry
*eh
;
11945 Elf_Internal_Sym
*sym
;
11947 struct _opd_sec_data
*opd
;
11951 r_type
= ELF64_R_TYPE (rel
->r_info
);
11952 if (r_type
!= R_PPC64_REL24
11953 && r_type
!= R_PPC64_REL14
11954 && r_type
!= R_PPC64_REL14_BRTAKEN
11955 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11958 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11959 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11966 /* Calls to dynamic lib functions go through a plt call stub
11968 eh
= (struct ppc_link_hash_entry
*) h
;
11970 && (eh
->elf
.plt
.plist
!= NULL
11972 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11978 if (sym_sec
== NULL
)
11979 /* Ignore other undefined symbols. */
11982 /* Assume branches to other sections not included in the
11983 link need stubs too, to cover -R and absolute syms. */
11984 if (sym_sec
->output_section
== NULL
)
11991 sym_value
= sym
->st_value
;
11994 if (h
->root
.type
!= bfd_link_hash_defined
11995 && h
->root
.type
!= bfd_link_hash_defweak
)
11997 sym_value
= h
->root
.u
.def
.value
;
11999 sym_value
+= rel
->r_addend
;
12001 /* If this branch reloc uses an opd sym, find the code section. */
12002 opd
= get_opd_info (sym_sec
);
12005 if (h
== NULL
&& opd
->adjust
!= NULL
)
12009 adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12011 /* Assume deleted functions won't ever be called. */
12013 sym_value
+= adjust
;
12016 dest
= opd_entry_value (sym_sec
, sym_value
,
12017 &sym_sec
, NULL
, FALSE
);
12018 if (dest
== (bfd_vma
) -1)
12023 + sym_sec
->output_offset
12024 + sym_sec
->output_section
->vma
);
12026 /* Ignore branch to self. */
12027 if (sym_sec
== isec
)
12030 /* If the called function uses the toc, we need a stub. */
12031 if (sym_sec
->has_toc_reloc
12032 || sym_sec
->makes_toc_func_call
)
12038 /* Assume any branch that needs a long branch stub might in fact
12039 need a plt_branch stub. A plt_branch stub uses r2. */
12040 else if (dest
- (isec
->output_offset
12041 + isec
->output_section
->vma
12042 + rel
->r_offset
) + (1 << 25)
12043 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12051 /* If calling back to a section in the process of being
12052 tested, we can't say for sure that no toc adjusting stubs
12053 are needed, so don't return zero. */
12054 else if (sym_sec
->call_check_in_progress
)
12057 /* Branches to another section that itself doesn't have any TOC
12058 references are OK. Recursively call ourselves to check. */
12059 else if (!sym_sec
->call_check_done
)
12063 /* Mark current section as indeterminate, so that other
12064 sections that call back to current won't be marked as
12066 isec
->call_check_in_progress
= 1;
12067 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
12068 isec
->call_check_in_progress
= 0;
12079 if (local_syms
!= NULL
12080 && (elf_symtab_hdr (isec
->owner
).contents
12081 != (unsigned char *) local_syms
))
12083 if (elf_section_data (isec
)->relocs
!= relstart
)
12088 && isec
->map_head
.s
!= NULL
12089 && (strcmp (isec
->output_section
->name
, ".init") == 0
12090 || strcmp (isec
->output_section
->name
, ".fini") == 0))
12092 if (isec
->map_head
.s
->has_toc_reloc
12093 || isec
->map_head
.s
->makes_toc_func_call
)
12095 else if (!isec
->map_head
.s
->call_check_done
)
12098 isec
->call_check_in_progress
= 1;
12099 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
12100 isec
->call_check_in_progress
= 0;
12107 isec
->makes_toc_func_call
= 1;
12112 /* The linker repeatedly calls this function for each input section,
12113 in the order that input sections are linked into output sections.
12114 Build lists of input sections to determine groupings between which
12115 we may insert linker stubs. */
12118 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
12120 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12125 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
12126 && isec
->output_section
->id
< htab
->sec_info_arr_size
)
12128 /* This happens to make the list in reverse order,
12129 which is what we want. */
12130 htab
->sec_info
[isec
->id
].u
.list
12131 = htab
->sec_info
[isec
->output_section
->id
].u
.list
;
12132 htab
->sec_info
[isec
->output_section
->id
].u
.list
= isec
;
12135 if (htab
->multi_toc_needed
)
12137 /* Analyse sections that aren't already flagged as needing a
12138 valid toc pointer. Exclude .fixup for the linux kernel.
12139 .fixup contains branches, but only back to the function that
12140 hit an exception. */
12141 if (!(isec
->has_toc_reloc
12142 || (isec
->flags
& SEC_CODE
) == 0
12143 || strcmp (isec
->name
, ".fixup") == 0
12144 || isec
->call_check_done
))
12146 if (toc_adjusting_stub_needed (info
, isec
) < 0)
12149 /* Make all sections use the TOC assigned for this object file.
12150 This will be wrong for pasted sections; We fix that in
12151 check_pasted_section(). */
12152 if (elf_gp (isec
->owner
) != 0)
12153 htab
->toc_curr
= elf_gp (isec
->owner
);
12156 htab
->sec_info
[isec
->id
].toc_off
= htab
->toc_curr
;
12160 /* Check that all .init and .fini sections use the same toc, if they
12161 have toc relocs. */
12164 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
12166 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
12170 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12171 bfd_vma toc_off
= 0;
12174 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12175 if (i
->has_toc_reloc
)
12178 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12179 else if (toc_off
!= htab
->sec_info
[i
->id
].toc_off
)
12184 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12185 if (i
->makes_toc_func_call
)
12187 toc_off
= htab
->sec_info
[i
->id
].toc_off
;
12191 /* Make sure the whole pasted function uses the same toc offset. */
12193 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
12194 htab
->sec_info
[i
->id
].toc_off
= toc_off
;
12200 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
12202 return (check_pasted_section (info
, ".init")
12203 & check_pasted_section (info
, ".fini"));
12206 /* See whether we can group stub sections together. Grouping stub
12207 sections may result in fewer stubs. More importantly, we need to
12208 put all .init* and .fini* stubs at the beginning of the .init or
12209 .fini output sections respectively, because glibc splits the
12210 _init and _fini functions into multiple parts. Putting a stub in
12211 the middle of a function is not a good idea. */
12214 group_sections (struct bfd_link_info
*info
,
12215 bfd_size_type stub_group_size
,
12216 bfd_boolean stubs_always_before_branch
)
12218 struct ppc_link_hash_table
*htab
;
12220 bfd_boolean suppress_size_errors
;
12222 htab
= ppc_hash_table (info
);
12226 suppress_size_errors
= FALSE
;
12227 if (stub_group_size
== 1)
12229 /* Default values. */
12230 if (stubs_always_before_branch
)
12231 stub_group_size
= 0x1e00000;
12233 stub_group_size
= 0x1c00000;
12234 suppress_size_errors
= TRUE
;
12237 for (osec
= info
->output_bfd
->sections
; osec
!= NULL
; osec
= osec
->next
)
12241 if (osec
->id
>= htab
->sec_info_arr_size
)
12244 tail
= htab
->sec_info
[osec
->id
].u
.list
;
12245 while (tail
!= NULL
)
12249 bfd_size_type total
;
12250 bfd_boolean big_sec
;
12252 struct map_stub
*group
;
12253 bfd_size_type group_size
;
12256 total
= tail
->size
;
12257 group_size
= (ppc64_elf_section_data (tail
) != NULL
12258 && ppc64_elf_section_data (tail
)->has_14bit_branch
12259 ? stub_group_size
>> 10 : stub_group_size
);
12261 big_sec
= total
> group_size
;
12262 if (big_sec
&& !suppress_size_errors
)
12263 /* xgettext:c-format */
12264 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12265 tail
->owner
, tail
);
12266 curr_toc
= htab
->sec_info
[tail
->id
].toc_off
;
12268 while ((prev
= htab
->sec_info
[curr
->id
].u
.list
) != NULL
12269 && ((total
+= curr
->output_offset
- prev
->output_offset
)
12270 < (ppc64_elf_section_data (prev
) != NULL
12271 && ppc64_elf_section_data (prev
)->has_14bit_branch
12272 ? (group_size
= stub_group_size
>> 10) : group_size
))
12273 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12276 /* OK, the size from the start of CURR to the end is less
12277 than group_size and thus can be handled by one stub
12278 section. (or the tail section is itself larger than
12279 group_size, in which case we may be toast.) We should
12280 really be keeping track of the total size of stubs added
12281 here, as stubs contribute to the final output section
12282 size. That's a little tricky, and this way will only
12283 break if stubs added make the total size more than 2^25,
12284 ie. for the default stub_group_size, if stubs total more
12285 than 2097152 bytes, or nearly 75000 plt call stubs. */
12286 group
= bfd_alloc (curr
->owner
, sizeof (*group
));
12289 group
->link_sec
= curr
;
12290 group
->stub_sec
= NULL
;
12291 group
->needs_save_res
= 0;
12292 group
->tls_get_addr_opt_bctrl
= -1u;
12293 group
->next
= htab
->group
;
12294 htab
->group
= group
;
12297 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12298 /* Set up this stub group. */
12299 htab
->sec_info
[tail
->id
].u
.group
= group
;
12301 while (tail
!= curr
&& (tail
= prev
) != NULL
);
12303 /* But wait, there's more! Input sections up to group_size
12304 bytes before the stub section can be handled by it too.
12305 Don't do this if we have a really large section after the
12306 stubs, as adding more stubs increases the chance that
12307 branches may not reach into the stub section. */
12308 if (!stubs_always_before_branch
&& !big_sec
)
12311 while (prev
!= NULL
12312 && ((total
+= tail
->output_offset
- prev
->output_offset
)
12313 < (ppc64_elf_section_data (prev
) != NULL
12314 && ppc64_elf_section_data (prev
)->has_14bit_branch
12315 ? (group_size
= stub_group_size
>> 10) : group_size
))
12316 && htab
->sec_info
[prev
->id
].toc_off
== curr_toc
)
12319 prev
= htab
->sec_info
[tail
->id
].u
.list
;
12320 htab
->sec_info
[tail
->id
].u
.group
= group
;
12329 static const unsigned char glink_eh_frame_cie
[] =
12331 0, 0, 0, 16, /* length. */
12332 0, 0, 0, 0, /* id. */
12333 1, /* CIE version. */
12334 'z', 'R', 0, /* Augmentation string. */
12335 4, /* Code alignment. */
12336 0x78, /* Data alignment. */
12338 1, /* Augmentation size. */
12339 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
12340 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
12344 stub_eh_frame_size (struct map_stub
*group
, size_t align
)
12346 size_t this_size
= 17;
12347 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12349 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12352 else if (to_bctrl
< 256)
12354 else if (to_bctrl
< 65536)
12360 this_size
= (this_size
+ align
- 1) & -align
;
12364 /* Stripping output sections is normally done before dynamic section
12365 symbols have been allocated. This function is called later, and
12366 handles cases like htab->brlt which is mapped to its own output
12370 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
12372 if (isec
->size
== 0
12373 && isec
->output_section
->size
== 0
12374 && !(isec
->output_section
->flags
& SEC_KEEP
)
12375 && !bfd_section_removed_from_list (info
->output_bfd
,
12376 isec
->output_section
)
12377 && elf_section_data (isec
->output_section
)->dynindx
== 0)
12379 isec
->output_section
->flags
|= SEC_EXCLUDE
;
12380 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
12381 info
->output_bfd
->section_count
--;
12385 /* Determine and set the size of the stub section for a final link.
12387 The basic idea here is to examine all the relocations looking for
12388 PC-relative calls to a target that is unreachable with a "bl"
12392 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
12394 bfd_size_type stub_group_size
;
12395 bfd_boolean stubs_always_before_branch
;
12396 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12401 if (htab
->params
->plt_thread_safe
== -1 && !bfd_link_executable (info
))
12402 htab
->params
->plt_thread_safe
= 1;
12403 if (!htab
->opd_abi
)
12404 htab
->params
->plt_thread_safe
= 0;
12405 else if (htab
->params
->plt_thread_safe
== -1)
12407 static const char *const thread_starter
[] =
12411 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12413 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12414 "mq_notify", "create_timer",
12419 "GOMP_parallel_start",
12420 "GOMP_parallel_loop_static",
12421 "GOMP_parallel_loop_static_start",
12422 "GOMP_parallel_loop_dynamic",
12423 "GOMP_parallel_loop_dynamic_start",
12424 "GOMP_parallel_loop_guided",
12425 "GOMP_parallel_loop_guided_start",
12426 "GOMP_parallel_loop_runtime",
12427 "GOMP_parallel_loop_runtime_start",
12428 "GOMP_parallel_sections",
12429 "GOMP_parallel_sections_start",
12435 for (i
= 0; i
< ARRAY_SIZE (thread_starter
); i
++)
12437 struct elf_link_hash_entry
*h
;
12438 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12439 FALSE
, FALSE
, TRUE
);
12440 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12441 if (htab
->params
->plt_thread_safe
)
12445 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12446 if (htab
->params
->group_size
< 0)
12447 stub_group_size
= -htab
->params
->group_size
;
12449 stub_group_size
= htab
->params
->group_size
;
12451 if (!group_sections (info
, stub_group_size
, stubs_always_before_branch
))
12454 #define STUB_SHRINK_ITER 20
12455 /* Loop until no stubs added. After iteration 20 of this loop we may
12456 exit on a stub section shrinking. This is to break out of a
12457 pathological case where adding stubs on one iteration decreases
12458 section gaps (perhaps due to alignment), which then requires
12459 fewer or smaller stubs on the next iteration. */
12464 unsigned int bfd_indx
;
12465 struct map_stub
*group
;
12467 htab
->stub_iteration
+= 1;
12469 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12471 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12473 Elf_Internal_Shdr
*symtab_hdr
;
12475 Elf_Internal_Sym
*local_syms
= NULL
;
12477 if (!is_ppc64_elf (input_bfd
))
12480 /* We'll need the symbol table in a second. */
12481 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12482 if (symtab_hdr
->sh_info
== 0)
12485 /* Walk over each section attached to the input bfd. */
12486 for (section
= input_bfd
->sections
;
12488 section
= section
->next
)
12490 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12492 /* If there aren't any relocs, then there's nothing more
12494 if ((section
->flags
& SEC_RELOC
) == 0
12495 || (section
->flags
& SEC_ALLOC
) == 0
12496 || (section
->flags
& SEC_LOAD
) == 0
12497 || (section
->flags
& SEC_CODE
) == 0
12498 || section
->reloc_count
== 0)
12501 /* If this section is a link-once section that will be
12502 discarded, then don't create any stubs. */
12503 if (section
->output_section
== NULL
12504 || section
->output_section
->owner
!= info
->output_bfd
)
12507 /* Get the relocs. */
12509 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12510 info
->keep_memory
);
12511 if (internal_relocs
== NULL
)
12512 goto error_ret_free_local
;
12514 /* Now examine each relocation. */
12515 irela
= internal_relocs
;
12516 irelaend
= irela
+ section
->reloc_count
;
12517 for (; irela
< irelaend
; irela
++)
12519 enum elf_ppc64_reloc_type r_type
;
12520 unsigned int r_indx
;
12521 enum ppc_stub_type stub_type
;
12522 struct ppc_stub_hash_entry
*stub_entry
;
12523 asection
*sym_sec
, *code_sec
;
12524 bfd_vma sym_value
, code_value
;
12525 bfd_vma destination
;
12526 unsigned long local_off
;
12527 bfd_boolean ok_dest
;
12528 struct ppc_link_hash_entry
*hash
;
12529 struct ppc_link_hash_entry
*fdh
;
12530 struct elf_link_hash_entry
*h
;
12531 Elf_Internal_Sym
*sym
;
12533 const asection
*id_sec
;
12534 struct _opd_sec_data
*opd
;
12535 struct plt_entry
*plt_ent
;
12537 r_type
= ELF64_R_TYPE (irela
->r_info
);
12538 r_indx
= ELF64_R_SYM (irela
->r_info
);
12540 if (r_type
>= R_PPC64_max
)
12542 bfd_set_error (bfd_error_bad_value
);
12543 goto error_ret_free_internal
;
12546 /* Only look for stubs on branch instructions. */
12547 if (r_type
!= R_PPC64_REL24
12548 && r_type
!= R_PPC64_REL14
12549 && r_type
!= R_PPC64_REL14_BRTAKEN
12550 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12553 /* Now determine the call target, its name, value,
12555 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12556 r_indx
, input_bfd
))
12557 goto error_ret_free_internal
;
12558 hash
= (struct ppc_link_hash_entry
*) h
;
12565 sym_value
= sym
->st_value
;
12566 if (sym_sec
!= NULL
12567 && sym_sec
->output_section
!= NULL
)
12570 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12571 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12573 sym_value
= hash
->elf
.root
.u
.def
.value
;
12574 if (sym_sec
->output_section
!= NULL
)
12577 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12578 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12580 /* Recognise an old ABI func code entry sym, and
12581 use the func descriptor sym instead if it is
12583 if (hash
->elf
.root
.root
.string
[0] == '.'
12584 && hash
->oh
!= NULL
)
12586 fdh
= ppc_follow_link (hash
->oh
);
12587 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12588 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12590 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12591 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12592 if (sym_sec
->output_section
!= NULL
)
12601 bfd_set_error (bfd_error_bad_value
);
12602 goto error_ret_free_internal
;
12609 sym_value
+= irela
->r_addend
;
12610 destination
= (sym_value
12611 + sym_sec
->output_offset
12612 + sym_sec
->output_section
->vma
);
12613 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12618 code_sec
= sym_sec
;
12619 code_value
= sym_value
;
12620 opd
= get_opd_info (sym_sec
);
12625 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12627 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12630 code_value
+= adjust
;
12631 sym_value
+= adjust
;
12633 dest
= opd_entry_value (sym_sec
, sym_value
,
12634 &code_sec
, &code_value
, FALSE
);
12635 if (dest
!= (bfd_vma
) -1)
12637 destination
= dest
;
12640 /* Fixup old ABI sym to point at code
12642 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12643 hash
->elf
.root
.u
.def
.section
= code_sec
;
12644 hash
->elf
.root
.u
.def
.value
= code_value
;
12649 /* Determine what (if any) linker stub is needed. */
12651 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12652 &plt_ent
, destination
,
12655 if (stub_type
!= ppc_stub_plt_call
)
12657 /* Check whether we need a TOC adjusting stub.
12658 Since the linker pastes together pieces from
12659 different object files when creating the
12660 _init and _fini functions, it may be that a
12661 call to what looks like a local sym is in
12662 fact a call needing a TOC adjustment. */
12663 if (code_sec
!= NULL
12664 && code_sec
->output_section
!= NULL
12665 && (htab
->sec_info
[code_sec
->id
].toc_off
12666 != htab
->sec_info
[section
->id
].toc_off
)
12667 && (code_sec
->has_toc_reloc
12668 || code_sec
->makes_toc_func_call
))
12669 stub_type
= ppc_stub_long_branch_r2off
;
12672 if (stub_type
== ppc_stub_none
)
12675 /* __tls_get_addr calls might be eliminated. */
12676 if (stub_type
!= ppc_stub_plt_call
12678 && (hash
== htab
->tls_get_addr
12679 || hash
== htab
->tls_get_addr_fd
)
12680 && section
->has_tls_reloc
12681 && irela
!= internal_relocs
)
12683 /* Get tls info. */
12684 unsigned char *tls_mask
;
12686 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12687 irela
- 1, input_bfd
))
12688 goto error_ret_free_internal
;
12689 if (*tls_mask
!= 0)
12693 if (stub_type
== ppc_stub_plt_call
)
12696 && htab
->params
->plt_localentry0
!= 0
12697 && is_elfv2_localentry0 (&hash
->elf
))
12698 htab
->has_plt_localentry0
= 1;
12699 else if (irela
+ 1 < irelaend
12700 && irela
[1].r_offset
== irela
->r_offset
+ 4
12701 && (ELF64_R_TYPE (irela
[1].r_info
)
12702 == R_PPC64_TOCSAVE
))
12704 if (!tocsave_find (htab
, INSERT
,
12705 &local_syms
, irela
+ 1, input_bfd
))
12706 goto error_ret_free_internal
;
12709 stub_type
= ppc_stub_plt_call_r2save
;
12712 /* Support for grouping stub sections. */
12713 id_sec
= htab
->sec_info
[section
->id
].u
.group
->link_sec
;
12715 /* Get the name of this stub. */
12716 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12718 goto error_ret_free_internal
;
12720 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12721 stub_name
, FALSE
, FALSE
);
12722 if (stub_entry
!= NULL
)
12724 /* The proper stub has already been created. */
12726 if (stub_type
== ppc_stub_plt_call_r2save
)
12727 stub_entry
->stub_type
= stub_type
;
12731 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12732 if (stub_entry
== NULL
)
12735 error_ret_free_internal
:
12736 if (elf_section_data (section
)->relocs
== NULL
)
12737 free (internal_relocs
);
12738 error_ret_free_local
:
12739 if (local_syms
!= NULL
12740 && (symtab_hdr
->contents
12741 != (unsigned char *) local_syms
))
12746 stub_entry
->stub_type
= stub_type
;
12747 if (stub_type
!= ppc_stub_plt_call
12748 && stub_type
!= ppc_stub_plt_call_r2save
)
12750 stub_entry
->target_value
= code_value
;
12751 stub_entry
->target_section
= code_sec
;
12755 stub_entry
->target_value
= sym_value
;
12756 stub_entry
->target_section
= sym_sec
;
12758 stub_entry
->h
= hash
;
12759 stub_entry
->plt_ent
= plt_ent
;
12760 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12762 if (stub_entry
->h
!= NULL
)
12763 htab
->stub_globals
+= 1;
12766 /* We're done with the internal relocs, free them. */
12767 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12768 free (internal_relocs
);
12771 if (local_syms
!= NULL
12772 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12774 if (!info
->keep_memory
)
12777 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12781 /* We may have added some stubs. Find out the new size of the
12783 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12784 if (group
->stub_sec
!= NULL
)
12786 asection
*stub_sec
= group
->stub_sec
;
12788 if (htab
->stub_iteration
<= STUB_SHRINK_ITER
12789 || stub_sec
->rawsize
< stub_sec
->size
)
12790 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12791 stub_sec
->rawsize
= stub_sec
->size
;
12792 stub_sec
->size
= 0;
12793 stub_sec
->reloc_count
= 0;
12794 stub_sec
->flags
&= ~SEC_RELOC
;
12797 htab
->brlt
->size
= 0;
12798 htab
->brlt
->reloc_count
= 0;
12799 htab
->brlt
->flags
&= ~SEC_RELOC
;
12800 if (htab
->relbrlt
!= NULL
)
12801 htab
->relbrlt
->size
= 0;
12803 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12805 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12806 if (group
->needs_save_res
)
12807 group
->stub_sec
->size
+= htab
->sfpr
->size
;
12809 if (info
->emitrelocations
12810 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12812 htab
->glink
->reloc_count
= 1;
12813 htab
->glink
->flags
|= SEC_RELOC
;
12816 if (htab
->glink_eh_frame
!= NULL
12817 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12818 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12820 size_t size
= 0, align
= 4;
12822 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12823 if (group
->stub_sec
!= NULL
)
12824 size
+= stub_eh_frame_size (group
, align
);
12825 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12826 size
+= (24 + align
- 1) & -align
;
12828 size
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
12829 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12830 size
= (size
+ align
- 1) & -align
;
12831 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12832 htab
->glink_eh_frame
->size
= size
;
12835 if (htab
->params
->plt_stub_align
!= 0)
12836 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12837 if (group
->stub_sec
!= NULL
)
12838 group
->stub_sec
->size
= ((group
->stub_sec
->size
12839 + (1 << htab
->params
->plt_stub_align
) - 1)
12840 & -(1 << htab
->params
->plt_stub_align
));
12842 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12843 if (group
->stub_sec
!= NULL
12844 && group
->stub_sec
->rawsize
!= group
->stub_sec
->size
12845 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
12846 || group
->stub_sec
->rawsize
< group
->stub_sec
->size
))
12850 && (htab
->glink_eh_frame
== NULL
12851 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12854 /* Ask the linker to do its stuff. */
12855 (*htab
->params
->layout_sections_again
) ();
12858 if (htab
->glink_eh_frame
!= NULL
12859 && htab
->glink_eh_frame
->size
!= 0)
12862 bfd_byte
*p
, *last_fde
;
12863 size_t last_fde_len
, size
, align
, pad
;
12864 struct map_stub
*group
;
12866 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12869 htab
->glink_eh_frame
->contents
= p
;
12873 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12874 /* CIE length (rewrite in case little-endian). */
12875 last_fde_len
= ((sizeof (glink_eh_frame_cie
) + align
- 1) & -align
) - 4;
12876 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12877 p
+= last_fde_len
+ 4;
12879 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
12880 if (group
->stub_sec
!= NULL
)
12883 last_fde_len
= stub_eh_frame_size (group
, align
) - 4;
12885 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12888 val
= p
- htab
->glink_eh_frame
->contents
;
12889 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12891 /* Offset to stub section, written later. */
12893 /* stub section size. */
12894 bfd_put_32 (htab
->elf
.dynobj
, group
->stub_sec
->size
, p
);
12896 /* Augmentation. */
12898 if (group
->tls_get_addr_opt_bctrl
!= -1u)
12900 unsigned int to_bctrl
= group
->tls_get_addr_opt_bctrl
/ 4;
12902 /* This FDE needs more than just the default.
12903 Describe __tls_get_addr_opt stub LR. */
12905 *p
++ = DW_CFA_advance_loc
+ to_bctrl
;
12906 else if (to_bctrl
< 256)
12908 *p
++ = DW_CFA_advance_loc1
;
12911 else if (to_bctrl
< 65536)
12913 *p
++ = DW_CFA_advance_loc2
;
12914 bfd_put_16 (htab
->elf
.dynobj
, to_bctrl
, p
);
12919 *p
++ = DW_CFA_advance_loc4
;
12920 bfd_put_32 (htab
->elf
.dynobj
, to_bctrl
, p
);
12923 *p
++ = DW_CFA_offset_extended_sf
;
12925 *p
++ = -(STK_LINKER (htab
) / 8) & 0x7f;
12926 *p
++ = DW_CFA_advance_loc
+ 4;
12927 *p
++ = DW_CFA_restore_extended
;
12931 p
= last_fde
+ last_fde_len
+ 4;
12933 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12936 last_fde_len
= ((24 + align
- 1) & -align
) - 4;
12938 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12941 val
= p
- htab
->glink_eh_frame
->contents
;
12942 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12944 /* Offset to .glink, written later. */
12947 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12949 /* Augmentation. */
12952 *p
++ = DW_CFA_advance_loc
+ 1;
12953 *p
++ = DW_CFA_register
;
12955 *p
++ = htab
->opd_abi
? 12 : 0;
12956 *p
++ = DW_CFA_advance_loc
+ (htab
->opd_abi
? 5 : 7);
12957 *p
++ = DW_CFA_restore_extended
;
12959 p
+= ((24 + align
- 1) & -align
) - 24;
12961 /* Subsume any padding into the last FDE if user .eh_frame
12962 sections are aligned more than glink_eh_frame. Otherwise any
12963 zero padding will be seen as a terminator. */
12964 align
= 1ul << htab
->glink_eh_frame
->output_section
->alignment_power
;
12965 size
= p
- htab
->glink_eh_frame
->contents
;
12966 pad
= ((size
+ align
- 1) & -align
) - size
;
12967 htab
->glink_eh_frame
->size
= size
+ pad
;
12968 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12971 maybe_strip_output (info
, htab
->brlt
);
12972 if (htab
->glink_eh_frame
!= NULL
)
12973 maybe_strip_output (info
, htab
->glink_eh_frame
);
12978 /* Called after we have determined section placement. If sections
12979 move, we'll be called again. Provide a value for TOCstart. */
12982 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12985 bfd_vma TOCstart
, adjust
;
12989 struct elf_link_hash_entry
*h
;
12990 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
12992 if (is_elf_hash_table (htab
)
12993 && htab
->hgot
!= NULL
)
12997 h
= elf_link_hash_lookup (htab
, ".TOC.", FALSE
, FALSE
, TRUE
);
12998 if (is_elf_hash_table (htab
))
13002 && h
->root
.type
== bfd_link_hash_defined
13003 && !h
->root
.linker_def
13004 && (!is_elf_hash_table (htab
)
13005 || h
->def_regular
))
13007 TOCstart
= (h
->root
.u
.def
.value
- TOC_BASE_OFF
13008 + h
->root
.u
.def
.section
->output_offset
13009 + h
->root
.u
.def
.section
->output_section
->vma
);
13010 _bfd_set_gp_value (obfd
, TOCstart
);
13015 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13016 order. The TOC starts where the first of these sections starts. */
13017 s
= bfd_get_section_by_name (obfd
, ".got");
13018 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13019 s
= bfd_get_section_by_name (obfd
, ".toc");
13020 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13021 s
= bfd_get_section_by_name (obfd
, ".tocbss");
13022 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13023 s
= bfd_get_section_by_name (obfd
, ".plt");
13024 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
13026 /* This may happen for
13027 o references to TOC base (SYM@toc / TOC[tc0]) without a
13029 o bad linker script
13030 o --gc-sections and empty TOC sections
13032 FIXME: Warn user? */
13034 /* Look for a likely section. We probably won't even be
13036 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13037 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
13039 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13042 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13043 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
13044 == (SEC_ALLOC
| SEC_SMALL_DATA
))
13047 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13048 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
13052 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
13053 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
13059 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
13061 /* Force alignment. */
13062 adjust
= TOCstart
& (TOC_BASE_ALIGN
- 1);
13063 TOCstart
-= adjust
;
13064 _bfd_set_gp_value (obfd
, TOCstart
);
13066 if (info
!= NULL
&& s
!= NULL
)
13068 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13072 if (htab
->elf
.hgot
!= NULL
)
13074 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
- adjust
;
13075 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
13080 struct bfd_link_hash_entry
*bh
= NULL
;
13081 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
13082 s
, TOC_BASE_OFF
- adjust
,
13083 NULL
, FALSE
, FALSE
, &bh
);
13089 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13090 write out any global entry stubs. */
13093 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
13095 struct bfd_link_info
*info
;
13096 struct ppc_link_hash_table
*htab
;
13097 struct plt_entry
*pent
;
13100 if (h
->root
.type
== bfd_link_hash_indirect
)
13103 if (!h
->pointer_equality_needed
)
13106 if (h
->def_regular
)
13110 htab
= ppc_hash_table (info
);
13115 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
13116 if (pent
->plt
.offset
!= (bfd_vma
) -1
13117 && pent
->addend
== 0)
13123 p
= s
->contents
+ h
->root
.u
.def
.value
;
13124 plt
= htab
->elf
.splt
;
13125 if (!htab
->elf
.dynamic_sections_created
13126 || h
->dynindx
== -1)
13127 plt
= htab
->elf
.iplt
;
13128 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
13129 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
13131 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
13133 info
->callbacks
->einfo
13134 (_("%P: linkage table error against `%T'\n"),
13135 h
->root
.root
.string
);
13136 bfd_set_error (bfd_error_bad_value
);
13137 htab
->stub_error
= TRUE
;
13140 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
13141 if (htab
->params
->emit_stub_syms
)
13143 size_t len
= strlen (h
->root
.root
.string
);
13144 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
13149 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
13150 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
13153 if (h
->root
.type
== bfd_link_hash_new
)
13155 h
->root
.type
= bfd_link_hash_defined
;
13156 h
->root
.u
.def
.section
= s
;
13157 h
->root
.u
.def
.value
= p
- s
->contents
;
13158 h
->ref_regular
= 1;
13159 h
->def_regular
= 1;
13160 h
->ref_regular_nonweak
= 1;
13161 h
->forced_local
= 1;
13163 h
->root
.linker_def
= 1;
13167 if (PPC_HA (off
) != 0)
13169 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
13172 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
13174 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
13176 bfd_put_32 (s
->owner
, BCTR
, p
);
13182 /* Build all the stubs associated with the current output file.
13183 The stubs are kept in a hash table attached to the main linker
13184 hash table. This function is called via gldelf64ppc_finish. */
13187 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
13190 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
13191 struct map_stub
*group
;
13192 asection
*stub_sec
;
13194 int stub_sec_count
= 0;
13199 /* Allocate memory to hold the linker stubs. */
13200 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13201 if ((stub_sec
= group
->stub_sec
) != NULL
13202 && stub_sec
->size
!= 0)
13204 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
13205 if (stub_sec
->contents
== NULL
)
13207 stub_sec
->size
= 0;
13210 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
13215 /* Build the .glink plt call stub. */
13216 if (htab
->params
->emit_stub_syms
)
13218 struct elf_link_hash_entry
*h
;
13219 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
13220 TRUE
, FALSE
, FALSE
);
13223 if (h
->root
.type
== bfd_link_hash_new
)
13225 h
->root
.type
= bfd_link_hash_defined
;
13226 h
->root
.u
.def
.section
= htab
->glink
;
13227 h
->root
.u
.def
.value
= 8;
13228 h
->ref_regular
= 1;
13229 h
->def_regular
= 1;
13230 h
->ref_regular_nonweak
= 1;
13231 h
->forced_local
= 1;
13233 h
->root
.linker_def
= 1;
13236 plt0
= (htab
->elf
.splt
->output_section
->vma
13237 + htab
->elf
.splt
->output_offset
13239 if (info
->emitrelocations
)
13241 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
13244 r
->r_offset
= (htab
->glink
->output_offset
13245 + htab
->glink
->output_section
->vma
);
13246 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
13247 r
->r_addend
= plt0
;
13249 p
= htab
->glink
->contents
;
13250 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
13251 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
13255 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
13257 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13259 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13261 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13263 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
13265 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13267 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13269 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
13271 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13273 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
13278 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
13280 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
13282 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
13284 bfd_put_32 (htab
->glink
->owner
, STD_R2_0R1
+ 24, p
);
13286 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
13288 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
13290 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
13292 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
13294 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
13296 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
13298 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
13300 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
13302 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
13305 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
13307 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
13309 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
13313 /* Build the .glink lazy link call stubs. */
13315 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
13321 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
13326 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
13328 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
13333 bfd_put_32 (htab
->glink
->owner
,
13334 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
13339 /* Build .glink global entry stubs. */
13340 if (htab
->glink
->size
> htab
->glink
->rawsize
)
13341 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
13344 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
13346 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
13348 if (htab
->brlt
->contents
== NULL
)
13351 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
13353 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
13354 htab
->relbrlt
->size
);
13355 if (htab
->relbrlt
->contents
== NULL
)
13359 /* Build the stubs as directed by the stub hash table. */
13360 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
13362 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13363 if (group
->needs_save_res
)
13365 stub_sec
= group
->stub_sec
;
13366 memcpy (stub_sec
->contents
+ stub_sec
->size
, htab
->sfpr
->contents
,
13368 if (htab
->params
->emit_stub_syms
)
13372 for (i
= 0; i
< ARRAY_SIZE (save_res_funcs
); i
++)
13373 if (!sfpr_define (info
, &save_res_funcs
[i
], stub_sec
))
13376 stub_sec
->size
+= htab
->sfpr
->size
;
13379 if (htab
->relbrlt
!= NULL
)
13380 htab
->relbrlt
->reloc_count
= 0;
13382 if (htab
->params
->plt_stub_align
!= 0)
13383 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13384 if ((stub_sec
= group
->stub_sec
) != NULL
)
13385 stub_sec
->size
= ((stub_sec
->size
13386 + (1 << htab
->params
->plt_stub_align
) - 1)
13387 & -(1 << htab
->params
->plt_stub_align
));
13389 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
13390 if ((stub_sec
= group
->stub_sec
) != NULL
)
13392 stub_sec_count
+= 1;
13393 if (stub_sec
->rawsize
!= stub_sec
->size
13394 && (htab
->stub_iteration
<= STUB_SHRINK_ITER
13395 || stub_sec
->rawsize
< stub_sec
->size
))
13399 /* Note that the glink_eh_frame check here is not only testing that
13400 the generated size matched the calculated size but also that
13401 bfd_elf_discard_info didn't make any changes to the section. */
13403 || (htab
->glink_eh_frame
!= NULL
13404 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
13406 htab
->stub_error
= TRUE
;
13407 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
13410 if (htab
->stub_error
)
13415 *stats
= bfd_malloc (500);
13416 if (*stats
== NULL
)
13419 sprintf (*stats
, _("linker stubs in %u group%s\n"
13421 " toc adjust %lu\n"
13422 " long branch %lu\n"
13423 " long toc adj %lu\n"
13425 " plt call toc %lu\n"
13426 " global entry %lu"),
13428 stub_sec_count
== 1 ? "" : "s",
13429 htab
->stub_count
[ppc_stub_long_branch
- 1],
13430 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
13431 htab
->stub_count
[ppc_stub_plt_branch
- 1],
13432 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
13433 htab
->stub_count
[ppc_stub_plt_call
- 1],
13434 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
13435 htab
->stub_count
[ppc_stub_global_entry
- 1]);
13440 /* What to do when ld finds relocations against symbols defined in
13441 discarded sections. */
13443 static unsigned int
13444 ppc64_elf_action_discarded (asection
*sec
)
13446 if (strcmp (".opd", sec
->name
) == 0)
13449 if (strcmp (".toc", sec
->name
) == 0)
13452 if (strcmp (".toc1", sec
->name
) == 0)
13455 return _bfd_elf_default_action_discarded (sec
);
13458 /* The RELOCATE_SECTION function is called by the ELF backend linker
13459 to handle the relocations for a section.
13461 The relocs are always passed as Rela structures; if the section
13462 actually uses Rel structures, the r_addend field will always be
13465 This function is responsible for adjust the section contents as
13466 necessary, and (if using Rela relocs and generating a
13467 relocatable output file) adjusting the reloc addend as
13470 This function does not have to worry about setting the reloc
13471 address or the reloc symbol index.
13473 LOCAL_SYMS is a pointer to the swapped in local symbols.
13475 LOCAL_SECTIONS is an array giving the section in the input file
13476 corresponding to the st_shndx field of each local symbol.
13478 The global hash table entry for the global symbols can be found
13479 via elf_sym_hashes (input_bfd).
13481 When generating relocatable output, this function must handle
13482 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13483 going to be the section symbol corresponding to the output
13484 section, which means that the addend must be adjusted
13488 ppc64_elf_relocate_section (bfd
*output_bfd
,
13489 struct bfd_link_info
*info
,
13491 asection
*input_section
,
13492 bfd_byte
*contents
,
13493 Elf_Internal_Rela
*relocs
,
13494 Elf_Internal_Sym
*local_syms
,
13495 asection
**local_sections
)
13497 struct ppc_link_hash_table
*htab
;
13498 Elf_Internal_Shdr
*symtab_hdr
;
13499 struct elf_link_hash_entry
**sym_hashes
;
13500 Elf_Internal_Rela
*rel
;
13501 Elf_Internal_Rela
*wrel
;
13502 Elf_Internal_Rela
*relend
;
13503 Elf_Internal_Rela outrel
;
13505 struct got_entry
**local_got_ents
;
13507 bfd_boolean ret
= TRUE
;
13508 bfd_boolean is_opd
;
13509 /* Assume 'at' branch hints. */
13510 bfd_boolean is_isa_v2
= TRUE
;
13511 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
13513 /* Initialize howto table if needed. */
13514 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13517 htab
= ppc_hash_table (info
);
13521 /* Don't relocate stub sections. */
13522 if (input_section
->owner
== htab
->params
->stub_bfd
)
13525 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13527 local_got_ents
= elf_local_got_ents (input_bfd
);
13528 TOCstart
= elf_gp (output_bfd
);
13529 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13530 sym_hashes
= elf_sym_hashes (input_bfd
);
13531 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13533 rel
= wrel
= relocs
;
13534 relend
= relocs
+ input_section
->reloc_count
;
13535 for (; rel
< relend
; wrel
++, rel
++)
13537 enum elf_ppc64_reloc_type r_type
;
13539 bfd_reloc_status_type r
;
13540 Elf_Internal_Sym
*sym
;
13542 struct elf_link_hash_entry
*h_elf
;
13543 struct ppc_link_hash_entry
*h
;
13544 struct ppc_link_hash_entry
*fdh
;
13545 const char *sym_name
;
13546 unsigned long r_symndx
, toc_symndx
;
13547 bfd_vma toc_addend
;
13548 unsigned char tls_mask
, tls_gd
, tls_type
;
13549 unsigned char sym_type
;
13550 bfd_vma relocation
;
13551 bfd_boolean unresolved_reloc
;
13552 bfd_boolean warned
;
13553 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13556 struct ppc_stub_hash_entry
*stub_entry
;
13557 bfd_vma max_br_offset
;
13559 Elf_Internal_Rela orig_rel
;
13560 reloc_howto_type
*howto
;
13561 struct reloc_howto_struct alt_howto
;
13566 r_type
= ELF64_R_TYPE (rel
->r_info
);
13567 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13569 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13570 symbol of the previous ADDR64 reloc. The symbol gives us the
13571 proper TOC base to use. */
13572 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13574 && ELF64_R_TYPE (wrel
[-1].r_info
) == R_PPC64_ADDR64
13576 r_symndx
= ELF64_R_SYM (wrel
[-1].r_info
);
13582 unresolved_reloc
= FALSE
;
13585 if (r_symndx
< symtab_hdr
->sh_info
)
13587 /* It's a local symbol. */
13588 struct _opd_sec_data
*opd
;
13590 sym
= local_syms
+ r_symndx
;
13591 sec
= local_sections
[r_symndx
];
13592 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13593 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13594 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13595 opd
= get_opd_info (sec
);
13596 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13598 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13604 /* If this is a relocation against the opd section sym
13605 and we have edited .opd, adjust the reloc addend so
13606 that ld -r and ld --emit-relocs output is correct.
13607 If it is a reloc against some other .opd symbol,
13608 then the symbol value will be adjusted later. */
13609 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13610 rel
->r_addend
+= adjust
;
13612 relocation
+= adjust
;
13618 bfd_boolean ignored
;
13620 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13621 r_symndx
, symtab_hdr
, sym_hashes
,
13622 h_elf
, sec
, relocation
,
13623 unresolved_reloc
, warned
, ignored
);
13624 sym_name
= h_elf
->root
.root
.string
;
13625 sym_type
= h_elf
->type
;
13627 && sec
->owner
== output_bfd
13628 && strcmp (sec
->name
, ".opd") == 0)
13630 /* This is a symbol defined in a linker script. All
13631 such are defined in output sections, even those
13632 defined by simple assignment from a symbol defined in
13633 an input section. Transfer the symbol to an
13634 appropriate input .opd section, so that a branch to
13635 this symbol will be mapped to the location specified
13636 by the opd entry. */
13637 struct bfd_link_order
*lo
;
13638 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13639 if (lo
->type
== bfd_indirect_link_order
)
13641 asection
*isec
= lo
->u
.indirect
.section
;
13642 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13643 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13646 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13647 h_elf
->root
.u
.def
.section
= isec
;
13654 h
= (struct ppc_link_hash_entry
*) h_elf
;
13656 if (sec
!= NULL
&& discarded_section (sec
))
13658 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
],
13659 input_bfd
, input_section
,
13660 contents
+ rel
->r_offset
);
13661 wrel
->r_offset
= rel
->r_offset
;
13663 wrel
->r_addend
= 0;
13665 /* For ld -r, remove relocations in debug sections against
13666 sections defined in discarded sections. Not done for
13667 non-debug to preserve relocs in .eh_frame which the
13668 eh_frame editing code expects to be present. */
13669 if (bfd_link_relocatable (info
)
13670 && (input_section
->flags
& SEC_DEBUGGING
))
13676 if (bfd_link_relocatable (info
))
13679 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13681 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
13682 sec
= bfd_abs_section_ptr
;
13683 unresolved_reloc
= FALSE
;
13686 /* TLS optimizations. Replace instruction sequences and relocs
13687 based on information we collected in tls_optimize. We edit
13688 RELOCS so that --emit-relocs will output something sensible
13689 for the final instruction stream. */
13694 tls_mask
= h
->tls_mask
;
13695 else if (local_got_ents
!= NULL
)
13697 struct plt_entry
**local_plt
= (struct plt_entry
**)
13698 (local_got_ents
+ symtab_hdr
->sh_info
);
13699 unsigned char *lgot_masks
= (unsigned char *)
13700 (local_plt
+ symtab_hdr
->sh_info
);
13701 tls_mask
= lgot_masks
[r_symndx
];
13704 && (r_type
== R_PPC64_TLS
13705 || r_type
== R_PPC64_TLSGD
13706 || r_type
== R_PPC64_TLSLD
))
13708 /* Check for toc tls entries. */
13709 unsigned char *toc_tls
;
13711 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13712 &local_syms
, rel
, input_bfd
))
13716 tls_mask
= *toc_tls
;
13719 /* Check that tls relocs are used with tls syms, and non-tls
13720 relocs are used with non-tls syms. */
13721 if (r_symndx
!= STN_UNDEF
13722 && r_type
!= R_PPC64_NONE
13724 || h
->elf
.root
.type
== bfd_link_hash_defined
13725 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13726 && (IS_PPC64_TLS_RELOC (r_type
)
13727 != (sym_type
== STT_TLS
13728 || (sym_type
== STT_SECTION
13729 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13732 && (r_type
== R_PPC64_TLS
13733 || r_type
== R_PPC64_TLSGD
13734 || r_type
== R_PPC64_TLSLD
))
13735 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13738 info
->callbacks
->einfo
13739 (!IS_PPC64_TLS_RELOC (r_type
)
13740 /* xgettext:c-format */
13741 ? _("%H: %s used with TLS symbol `%T'\n")
13742 /* xgettext:c-format */
13743 : _("%H: %s used with non-TLS symbol `%T'\n"),
13744 input_bfd
, input_section
, rel
->r_offset
,
13745 ppc64_elf_howto_table
[r_type
]->name
,
13749 /* Ensure reloc mapping code below stays sane. */
13750 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13751 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13752 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13753 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13754 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13755 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13756 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13757 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13758 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13759 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13767 case R_PPC64_LO_DS_OPT
:
13768 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
- d_offset
);
13769 if ((insn
& (0x3f << 26)) != 58u << 26)
13771 insn
+= (14u << 26) - (58u << 26);
13772 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13773 r_type
= R_PPC64_TOC16_LO
;
13774 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13777 case R_PPC64_TOC16
:
13778 case R_PPC64_TOC16_LO
:
13779 case R_PPC64_TOC16_DS
:
13780 case R_PPC64_TOC16_LO_DS
:
13782 /* Check for toc tls entries. */
13783 unsigned char *toc_tls
;
13786 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13787 &local_syms
, rel
, input_bfd
);
13793 tls_mask
= *toc_tls
;
13794 if (r_type
== R_PPC64_TOC16_DS
13795 || r_type
== R_PPC64_TOC16_LO_DS
)
13798 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13803 /* If we found a GD reloc pair, then we might be
13804 doing a GD->IE transition. */
13807 tls_gd
= TLS_TPRELGD
;
13808 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13811 else if (retval
== 3)
13813 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13821 case R_PPC64_GOT_TPREL16_HI
:
13822 case R_PPC64_GOT_TPREL16_HA
:
13824 && (tls_mask
& TLS_TPREL
) == 0)
13826 rel
->r_offset
-= d_offset
;
13827 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13828 r_type
= R_PPC64_NONE
;
13829 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13833 case R_PPC64_GOT_TPREL16_DS
:
13834 case R_PPC64_GOT_TPREL16_LO_DS
:
13836 && (tls_mask
& TLS_TPREL
) == 0)
13839 insn
= bfd_get_32 (input_bfd
,
13840 contents
+ rel
->r_offset
- d_offset
);
13842 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13843 bfd_put_32 (input_bfd
, insn
,
13844 contents
+ rel
->r_offset
- d_offset
);
13845 r_type
= R_PPC64_TPREL16_HA
;
13846 if (toc_symndx
!= 0)
13848 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13849 rel
->r_addend
= toc_addend
;
13850 /* We changed the symbol. Start over in order to
13851 get h, sym, sec etc. right. */
13855 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13861 && (tls_mask
& TLS_TPREL
) == 0)
13863 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13864 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13867 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
13868 /* Was PPC64_TLS which sits on insn boundary, now
13869 PPC64_TPREL16_LO which is at low-order half-word. */
13870 rel
->r_offset
+= d_offset
;
13871 r_type
= R_PPC64_TPREL16_LO
;
13872 if (toc_symndx
!= 0)
13874 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13875 rel
->r_addend
= toc_addend
;
13876 /* We changed the symbol. Start over in order to
13877 get h, sym, sec etc. right. */
13881 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13885 case R_PPC64_GOT_TLSGD16_HI
:
13886 case R_PPC64_GOT_TLSGD16_HA
:
13887 tls_gd
= TLS_TPRELGD
;
13888 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13892 case R_PPC64_GOT_TLSLD16_HI
:
13893 case R_PPC64_GOT_TLSLD16_HA
:
13894 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13897 if ((tls_mask
& tls_gd
) != 0)
13898 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13899 + R_PPC64_GOT_TPREL16_DS
);
13902 rel
->r_offset
-= d_offset
;
13903 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
13904 r_type
= R_PPC64_NONE
;
13906 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13910 case R_PPC64_GOT_TLSGD16
:
13911 case R_PPC64_GOT_TLSGD16_LO
:
13912 tls_gd
= TLS_TPRELGD
;
13913 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13917 case R_PPC64_GOT_TLSLD16
:
13918 case R_PPC64_GOT_TLSLD16_LO
:
13919 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13921 unsigned int insn1
, insn2
, insn3
;
13925 offset
= (bfd_vma
) -1;
13926 /* If not using the newer R_PPC64_TLSGD/LD to mark
13927 __tls_get_addr calls, we must trust that the call
13928 stays with its arg setup insns, ie. that the next
13929 reloc is the __tls_get_addr call associated with
13930 the current reloc. Edit both insns. */
13931 if (input_section
->has_tls_get_addr_call
13932 && rel
+ 1 < relend
13933 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13934 htab
->tls_get_addr
,
13935 htab
->tls_get_addr_fd
))
13936 offset
= rel
[1].r_offset
;
13937 /* We read the low GOT_TLS (or TOC16) insn because we
13938 need to keep the destination reg. It may be
13939 something other than the usual r3, and moved to r3
13940 before the call by intervening code. */
13941 insn1
= bfd_get_32 (input_bfd
,
13942 contents
+ rel
->r_offset
- d_offset
);
13943 if ((tls_mask
& tls_gd
) != 0)
13946 insn1
&= (0x1f << 21) | (0x1f << 16);
13947 insn1
|= 58 << 26; /* ld */
13948 insn2
= 0x7c636a14; /* add 3,3,13 */
13949 if (offset
!= (bfd_vma
) -1)
13950 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13951 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13952 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13953 + R_PPC64_GOT_TPREL16_DS
);
13955 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13956 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13961 insn1
&= 0x1f << 21;
13962 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13963 insn2
= 0x38630000; /* addi 3,3,0 */
13966 /* Was an LD reloc. */
13968 sec
= local_sections
[toc_symndx
];
13970 r_symndx
< symtab_hdr
->sh_info
;
13972 if (local_sections
[r_symndx
] == sec
)
13974 if (r_symndx
>= symtab_hdr
->sh_info
)
13975 r_symndx
= STN_UNDEF
;
13976 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13977 if (r_symndx
!= STN_UNDEF
)
13978 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13979 + sec
->output_offset
13980 + sec
->output_section
->vma
);
13982 else if (toc_symndx
!= 0)
13984 r_symndx
= toc_symndx
;
13985 rel
->r_addend
= toc_addend
;
13987 r_type
= R_PPC64_TPREL16_HA
;
13988 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13989 if (offset
!= (bfd_vma
) -1)
13991 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13992 R_PPC64_TPREL16_LO
);
13993 rel
[1].r_offset
= offset
+ d_offset
;
13994 rel
[1].r_addend
= rel
->r_addend
;
13997 bfd_put_32 (input_bfd
, insn1
,
13998 contents
+ rel
->r_offset
- d_offset
);
13999 if (offset
!= (bfd_vma
) -1)
14001 insn3
= bfd_get_32 (input_bfd
,
14002 contents
+ offset
+ 4);
14004 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
14006 rel
[1].r_offset
+= 4;
14007 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
14010 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14012 if ((tls_mask
& tls_gd
) == 0
14013 && (tls_gd
== 0 || toc_symndx
!= 0))
14015 /* We changed the symbol. Start over in order
14016 to get h, sym, sec etc. right. */
14022 case R_PPC64_TLSGD
:
14023 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
14025 unsigned int insn2
, insn3
;
14026 bfd_vma offset
= rel
->r_offset
;
14028 if ((tls_mask
& TLS_TPRELGD
) != 0)
14031 r_type
= R_PPC64_NONE
;
14032 insn2
= 0x7c636a14; /* add 3,3,13 */
14037 if (toc_symndx
!= 0)
14039 r_symndx
= toc_symndx
;
14040 rel
->r_addend
= toc_addend
;
14042 r_type
= R_PPC64_TPREL16_LO
;
14043 rel
->r_offset
= offset
+ d_offset
;
14044 insn2
= 0x38630000; /* addi 3,3,0 */
14046 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14047 /* Zap the reloc on the _tls_get_addr call too. */
14048 BFD_ASSERT (offset
== rel
[1].r_offset
);
14049 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14050 insn3
= bfd_get_32 (input_bfd
,
14051 contents
+ offset
+ 4);
14053 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
14055 rel
->r_offset
+= 4;
14056 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
14059 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14060 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
14065 case R_PPC64_TLSLD
:
14066 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
14068 unsigned int insn2
, insn3
;
14069 bfd_vma offset
= rel
->r_offset
;
14072 sec
= local_sections
[toc_symndx
];
14074 r_symndx
< symtab_hdr
->sh_info
;
14076 if (local_sections
[r_symndx
] == sec
)
14078 if (r_symndx
>= symtab_hdr
->sh_info
)
14079 r_symndx
= STN_UNDEF
;
14080 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14081 if (r_symndx
!= STN_UNDEF
)
14082 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
14083 + sec
->output_offset
14084 + sec
->output_section
->vma
);
14086 r_type
= R_PPC64_TPREL16_LO
;
14087 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14088 rel
->r_offset
= offset
+ d_offset
;
14089 /* Zap the reloc on the _tls_get_addr call too. */
14090 BFD_ASSERT (offset
== rel
[1].r_offset
);
14091 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
14092 insn2
= 0x38630000; /* addi 3,3,0 */
14093 insn3
= bfd_get_32 (input_bfd
,
14094 contents
+ offset
+ 4);
14096 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
14098 rel
->r_offset
+= 4;
14099 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
+ 4);
14102 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
14107 case R_PPC64_DTPMOD64
:
14108 if (rel
+ 1 < relend
14109 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
14110 && rel
[1].r_offset
== rel
->r_offset
+ 8)
14112 if ((tls_mask
& TLS_GD
) == 0)
14114 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
14115 if ((tls_mask
& TLS_TPRELGD
) != 0)
14116 r_type
= R_PPC64_TPREL64
;
14119 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14120 r_type
= R_PPC64_NONE
;
14122 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14127 if ((tls_mask
& TLS_LD
) == 0)
14129 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
14130 r_type
= R_PPC64_NONE
;
14131 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14136 case R_PPC64_TPREL64
:
14137 if ((tls_mask
& TLS_TPREL
) == 0)
14139 r_type
= R_PPC64_NONE
;
14140 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14144 case R_PPC64_ENTRY
:
14145 relocation
= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14146 if (!bfd_link_pic (info
)
14147 && !info
->traditional_format
14148 && relocation
+ 0x80008000 <= 0xffffffff)
14150 unsigned int insn1
, insn2
;
14152 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14153 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14154 if ((insn1
& ~0xfffc) == LD_R2_0R12
14155 && insn2
== ADD_R2_R2_R12
)
14157 bfd_put_32 (input_bfd
,
14158 LIS_R2
+ PPC_HA (relocation
),
14159 contents
+ rel
->r_offset
);
14160 bfd_put_32 (input_bfd
,
14161 ADDI_R2_R2
+ PPC_LO (relocation
),
14162 contents
+ rel
->r_offset
+ 4);
14167 relocation
-= (rel
->r_offset
14168 + input_section
->output_offset
14169 + input_section
->output_section
->vma
);
14170 if (relocation
+ 0x80008000 <= 0xffffffff)
14172 unsigned int insn1
, insn2
;
14174 insn1
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14175 insn2
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
14176 if ((insn1
& ~0xfffc) == LD_R2_0R12
14177 && insn2
== ADD_R2_R2_R12
)
14179 bfd_put_32 (input_bfd
,
14180 ADDIS_R2_R12
+ PPC_HA (relocation
),
14181 contents
+ rel
->r_offset
);
14182 bfd_put_32 (input_bfd
,
14183 ADDI_R2_R2
+ PPC_LO (relocation
),
14184 contents
+ rel
->r_offset
+ 4);
14190 case R_PPC64_REL16_HA
:
14191 /* If we are generating a non-PIC executable, edit
14192 . 0: addis 2,12,.TOC.-0b@ha
14193 . addi 2,2,.TOC.-0b@l
14194 used by ELFv2 global entry points to set up r2, to
14197 if .TOC. is in range. */
14198 if (!bfd_link_pic (info
)
14199 && !info
->traditional_format
14201 && rel
->r_addend
== d_offset
14202 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
14203 && rel
+ 1 < relend
14204 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
14205 && rel
[1].r_offset
== rel
->r_offset
+ 4
14206 && rel
[1].r_addend
== rel
->r_addend
+ 4
14207 && relocation
+ 0x80008000 <= 0xffffffff)
14209 unsigned int insn1
, insn2
;
14210 bfd_vma offset
= rel
->r_offset
- d_offset
;
14211 insn1
= bfd_get_32 (input_bfd
, contents
+ offset
);
14212 insn2
= bfd_get_32 (input_bfd
, contents
+ offset
+ 4);
14213 if ((insn1
& 0xffff0000) == ADDIS_R2_R12
14214 && (insn2
& 0xffff0000) == ADDI_R2_R2
)
14216 r_type
= R_PPC64_ADDR16_HA
;
14217 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
14218 rel
->r_addend
-= d_offset
;
14219 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
14220 rel
[1].r_addend
-= d_offset
+ 4;
14221 bfd_put_32 (input_bfd
, LIS_R2
, contents
+ offset
);
14227 /* Handle other relocations that tweak non-addend part of insn. */
14229 max_br_offset
= 1 << 25;
14230 addend
= rel
->r_addend
;
14231 reloc_dest
= DEST_NORMAL
;
14237 case R_PPC64_TOCSAVE
:
14238 if (relocation
+ addend
== (rel
->r_offset
14239 + input_section
->output_offset
14240 + input_section
->output_section
->vma
)
14241 && tocsave_find (htab
, NO_INSERT
,
14242 &local_syms
, rel
, input_bfd
))
14244 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
14246 || insn
== CROR_151515
|| insn
== CROR_313131
)
14247 bfd_put_32 (input_bfd
,
14248 STD_R2_0R1
+ STK_TOC (htab
),
14249 contents
+ rel
->r_offset
);
14253 /* Branch taken prediction relocations. */
14254 case R_PPC64_ADDR14_BRTAKEN
:
14255 case R_PPC64_REL14_BRTAKEN
:
14256 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14257 /* Fall through. */
14259 /* Branch not taken prediction relocations. */
14260 case R_PPC64_ADDR14_BRNTAKEN
:
14261 case R_PPC64_REL14_BRNTAKEN
:
14262 insn
|= bfd_get_32 (input_bfd
,
14263 contents
+ rel
->r_offset
) & ~(0x01 << 21);
14264 /* Fall through. */
14266 case R_PPC64_REL14
:
14267 max_br_offset
= 1 << 15;
14268 /* Fall through. */
14270 case R_PPC64_REL24
:
14271 /* Calls to functions with a different TOC, such as calls to
14272 shared objects, need to alter the TOC pointer. This is
14273 done using a linkage stub. A REL24 branching to these
14274 linkage stubs needs to be followed by a nop, as the nop
14275 will be replaced with an instruction to restore the TOC
14280 && h
->oh
->is_func_descriptor
)
14281 fdh
= ppc_follow_link (h
->oh
);
14282 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
14284 if (stub_entry
!= NULL
14285 && (stub_entry
->stub_type
== ppc_stub_plt_call
14286 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
14287 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
14288 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
14290 bfd_boolean can_plt_call
= FALSE
;
14292 if (stub_entry
->stub_type
== ppc_stub_plt_call
14294 && htab
->params
->plt_localentry0
!= 0
14295 && is_elfv2_localentry0 (&h
->elf
))
14297 /* The function doesn't use or change r2. */
14298 can_plt_call
= TRUE
;
14301 /* All of these stubs may modify r2, so there must be a
14302 branch and link followed by a nop. The nop is
14303 replaced by an insn to restore r2. */
14304 else if (rel
->r_offset
+ 8 <= input_section
->size
)
14308 br
= bfd_get_32 (input_bfd
,
14309 contents
+ rel
->r_offset
);
14314 nop
= bfd_get_32 (input_bfd
,
14315 contents
+ rel
->r_offset
+ 4);
14317 || nop
== CROR_151515
|| nop
== CROR_313131
)
14320 && (h
== htab
->tls_get_addr_fd
14321 || h
== htab
->tls_get_addr
)
14322 && htab
->params
->tls_get_addr_opt
)
14324 /* Special stub used, leave nop alone. */
14327 bfd_put_32 (input_bfd
,
14328 LD_R2_0R1
+ STK_TOC (htab
),
14329 contents
+ rel
->r_offset
+ 4);
14330 can_plt_call
= TRUE
;
14335 if (!can_plt_call
&& h
!= NULL
)
14337 const char *name
= h
->elf
.root
.root
.string
;
14342 if (strncmp (name
, "__libc_start_main", 17) == 0
14343 && (name
[17] == 0 || name
[17] == '@'))
14345 /* Allow crt1 branch to go via a toc adjusting
14346 stub. Other calls that never return could do
14347 the same, if we could detect such. */
14348 can_plt_call
= TRUE
;
14354 /* g++ as of 20130507 emits self-calls without a
14355 following nop. This is arguably wrong since we
14356 have conflicting information. On the one hand a
14357 global symbol and on the other a local call
14358 sequence, but don't error for this special case.
14359 It isn't possible to cheaply verify we have
14360 exactly such a call. Allow all calls to the same
14362 asection
*code_sec
= sec
;
14364 if (get_opd_info (sec
) != NULL
)
14366 bfd_vma off
= (relocation
+ addend
14367 - sec
->output_section
->vma
14368 - sec
->output_offset
);
14370 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
14372 if (code_sec
== input_section
)
14373 can_plt_call
= TRUE
;
14378 if (stub_entry
->stub_type
== ppc_stub_plt_call
14379 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14380 info
->callbacks
->einfo
14381 /* xgettext:c-format */
14382 (_("%H: call to `%T' lacks nop, can't restore toc; "
14383 "recompile with -fPIC\n"),
14384 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14386 info
->callbacks
->einfo
14387 /* xgettext:c-format */
14388 (_("%H: call to `%T' lacks nop, can't restore toc; "
14389 "(-mcmodel=small toc adjust stub)\n"),
14390 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
14392 bfd_set_error (bfd_error_bad_value
);
14397 && (stub_entry
->stub_type
== ppc_stub_plt_call
14398 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
14399 unresolved_reloc
= FALSE
;
14402 if ((stub_entry
== NULL
14403 || stub_entry
->stub_type
== ppc_stub_long_branch
14404 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14405 && get_opd_info (sec
) != NULL
)
14407 /* The branch destination is the value of the opd entry. */
14408 bfd_vma off
= (relocation
+ addend
14409 - sec
->output_section
->vma
14410 - sec
->output_offset
);
14411 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
14412 if (dest
!= (bfd_vma
) -1)
14416 reloc_dest
= DEST_OPD
;
14420 /* If the branch is out of reach we ought to have a long
14422 from
= (rel
->r_offset
14423 + input_section
->output_offset
14424 + input_section
->output_section
->vma
);
14426 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
14430 if (stub_entry
!= NULL
14431 && (stub_entry
->stub_type
== ppc_stub_long_branch
14432 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
14433 && (r_type
== R_PPC64_ADDR14_BRTAKEN
14434 || r_type
== R_PPC64_ADDR14_BRNTAKEN
14435 || (relocation
+ addend
- from
+ max_br_offset
14436 < 2 * max_br_offset
)))
14437 /* Don't use the stub if this branch is in range. */
14440 if (stub_entry
!= NULL
)
14442 /* Munge up the value and addend so that we call the stub
14443 rather than the procedure directly. */
14444 asection
*stub_sec
= stub_entry
->group
->stub_sec
;
14446 if (stub_entry
->stub_type
== ppc_stub_save_res
)
14447 relocation
+= (stub_sec
->output_offset
14448 + stub_sec
->output_section
->vma
14449 + stub_sec
->size
- htab
->sfpr
->size
14450 - htab
->sfpr
->output_offset
14451 - htab
->sfpr
->output_section
->vma
);
14453 relocation
= (stub_entry
->stub_offset
14454 + stub_sec
->output_offset
14455 + stub_sec
->output_section
->vma
);
14457 reloc_dest
= DEST_STUB
;
14459 if ((stub_entry
->stub_type
== ppc_stub_plt_call
14460 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14461 && (ALWAYS_EMIT_R2SAVE
14462 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
14463 && rel
+ 1 < relend
14464 && rel
[1].r_offset
== rel
->r_offset
+ 4
14465 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
14473 /* Set 'a' bit. This is 0b00010 in BO field for branch
14474 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14475 for branch on CTR insns (BO == 1a00t or 1a01t). */
14476 if ((insn
& (0x14 << 21)) == (0x04 << 21))
14477 insn
|= 0x02 << 21;
14478 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
14479 insn
|= 0x08 << 21;
14485 /* Invert 'y' bit if not the default. */
14486 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
14487 insn
^= 0x01 << 21;
14490 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
14493 /* NOP out calls to undefined weak functions.
14494 We can thus call a weak function without first
14495 checking whether the function is defined. */
14497 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14498 && h
->elf
.dynindx
== -1
14499 && r_type
== R_PPC64_REL24
14503 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
14509 /* Set `addend'. */
14514 info
->callbacks
->einfo
14515 /* xgettext:c-format */
14516 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14517 input_bfd
, (int) r_type
, sym_name
);
14519 bfd_set_error (bfd_error_bad_value
);
14525 case R_PPC64_TLSGD
:
14526 case R_PPC64_TLSLD
:
14527 case R_PPC64_TOCSAVE
:
14528 case R_PPC64_GNU_VTINHERIT
:
14529 case R_PPC64_GNU_VTENTRY
:
14530 case R_PPC64_ENTRY
:
14533 /* GOT16 relocations. Like an ADDR16 using the symbol's
14534 address in the GOT as relocation value instead of the
14535 symbol's value itself. Also, create a GOT entry for the
14536 symbol and put the symbol value there. */
14537 case R_PPC64_GOT_TLSGD16
:
14538 case R_PPC64_GOT_TLSGD16_LO
:
14539 case R_PPC64_GOT_TLSGD16_HI
:
14540 case R_PPC64_GOT_TLSGD16_HA
:
14541 tls_type
= TLS_TLS
| TLS_GD
;
14544 case R_PPC64_GOT_TLSLD16
:
14545 case R_PPC64_GOT_TLSLD16_LO
:
14546 case R_PPC64_GOT_TLSLD16_HI
:
14547 case R_PPC64_GOT_TLSLD16_HA
:
14548 tls_type
= TLS_TLS
| TLS_LD
;
14551 case R_PPC64_GOT_TPREL16_DS
:
14552 case R_PPC64_GOT_TPREL16_LO_DS
:
14553 case R_PPC64_GOT_TPREL16_HI
:
14554 case R_PPC64_GOT_TPREL16_HA
:
14555 tls_type
= TLS_TLS
| TLS_TPREL
;
14558 case R_PPC64_GOT_DTPREL16_DS
:
14559 case R_PPC64_GOT_DTPREL16_LO_DS
:
14560 case R_PPC64_GOT_DTPREL16_HI
:
14561 case R_PPC64_GOT_DTPREL16_HA
:
14562 tls_type
= TLS_TLS
| TLS_DTPREL
;
14565 case R_PPC64_GOT16
:
14566 case R_PPC64_GOT16_LO
:
14567 case R_PPC64_GOT16_HI
:
14568 case R_PPC64_GOT16_HA
:
14569 case R_PPC64_GOT16_DS
:
14570 case R_PPC64_GOT16_LO_DS
:
14573 /* Relocation is to the entry for this symbol in the global
14578 unsigned long indx
= 0;
14579 struct got_entry
*ent
;
14581 if (tls_type
== (TLS_TLS
| TLS_LD
)
14583 || !h
->elf
.def_dynamic
))
14584 ent
= ppc64_tlsld_got (input_bfd
);
14589 if (!htab
->elf
.dynamic_sections_created
14590 || h
->elf
.dynindx
== -1
14591 || SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14592 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
))
14593 /* This is actually a static link, or it is a
14594 -Bsymbolic link and the symbol is defined
14595 locally, or the symbol was forced to be local
14596 because of a version file. */
14600 indx
= h
->elf
.dynindx
;
14601 unresolved_reloc
= FALSE
;
14603 ent
= h
->elf
.got
.glist
;
14607 if (local_got_ents
== NULL
)
14609 ent
= local_got_ents
[r_symndx
];
14612 for (; ent
!= NULL
; ent
= ent
->next
)
14613 if (ent
->addend
== orig_rel
.r_addend
14614 && ent
->owner
== input_bfd
14615 && ent
->tls_type
== tls_type
)
14621 if (ent
->is_indirect
)
14622 ent
= ent
->got
.ent
;
14623 offp
= &ent
->got
.offset
;
14624 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14628 /* The offset must always be a multiple of 8. We use the
14629 least significant bit to record whether we have already
14630 processed this entry. */
14632 if ((off
& 1) != 0)
14636 /* Generate relocs for the dynamic linker, except in
14637 the case of TLSLD where we'll use one entry per
14645 ? h
->elf
.type
== STT_GNU_IFUNC
14646 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14649 relgot
= htab
->elf
.irelplt
;
14651 htab
->local_ifunc_resolver
= 1;
14652 else if (is_static_defined (&h
->elf
))
14653 htab
->maybe_local_ifunc_resolver
= 1;
14656 || (bfd_link_pic (info
)
14658 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &h
->elf
)
14659 || (tls_type
== (TLS_TLS
| TLS_LD
)
14660 && !h
->elf
.def_dynamic
))))
14661 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14662 if (relgot
!= NULL
)
14664 outrel
.r_offset
= (got
->output_section
->vma
14665 + got
->output_offset
14667 outrel
.r_addend
= addend
;
14668 if (tls_type
& (TLS_LD
| TLS_GD
))
14670 outrel
.r_addend
= 0;
14671 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14672 if (tls_type
== (TLS_TLS
| TLS_GD
))
14674 loc
= relgot
->contents
;
14675 loc
+= (relgot
->reloc_count
++
14676 * sizeof (Elf64_External_Rela
));
14677 bfd_elf64_swap_reloca_out (output_bfd
,
14679 outrel
.r_offset
+= 8;
14680 outrel
.r_addend
= addend
;
14682 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14685 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14686 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14687 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14688 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14689 else if (indx
!= 0)
14690 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14694 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14696 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14698 /* Write the .got section contents for the sake
14700 loc
= got
->contents
+ off
;
14701 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14705 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14707 outrel
.r_addend
+= relocation
;
14708 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14710 if (htab
->elf
.tls_sec
== NULL
)
14711 outrel
.r_addend
= 0;
14713 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14716 loc
= relgot
->contents
;
14717 loc
+= (relgot
->reloc_count
++
14718 * sizeof (Elf64_External_Rela
));
14719 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14722 /* Init the .got section contents here if we're not
14723 emitting a reloc. */
14726 relocation
+= addend
;
14729 if (htab
->elf
.tls_sec
== NULL
)
14733 if (tls_type
& TLS_LD
)
14736 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14737 if (tls_type
& TLS_TPREL
)
14738 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14741 if (tls_type
& (TLS_GD
| TLS_LD
))
14743 bfd_put_64 (output_bfd
, relocation
,
14744 got
->contents
+ off
+ 8);
14748 bfd_put_64 (output_bfd
, relocation
,
14749 got
->contents
+ off
);
14753 if (off
>= (bfd_vma
) -2)
14756 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14757 addend
= -(TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
);
14761 case R_PPC64_PLT16_HA
:
14762 case R_PPC64_PLT16_HI
:
14763 case R_PPC64_PLT16_LO
:
14764 case R_PPC64_PLT32
:
14765 case R_PPC64_PLT64
:
14766 /* Relocation is to the entry for this symbol in the
14767 procedure linkage table. */
14769 struct plt_entry
**plt_list
= NULL
;
14771 plt_list
= &h
->elf
.plt
.plist
;
14772 else if (local_got_ents
!= NULL
)
14774 struct plt_entry
**local_plt
= (struct plt_entry
**)
14775 (local_got_ents
+ symtab_hdr
->sh_info
);
14776 unsigned char *local_got_tls_masks
= (unsigned char *)
14777 (local_plt
+ symtab_hdr
->sh_info
);
14778 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
14779 plt_list
= local_plt
+ r_symndx
;
14783 struct plt_entry
*ent
;
14785 for (ent
= *plt_list
; ent
!= NULL
; ent
= ent
->next
)
14786 if (ent
->plt
.offset
!= (bfd_vma
) -1
14787 && ent
->addend
== orig_rel
.r_addend
)
14791 plt
= htab
->elf
.splt
;
14792 if (!htab
->elf
.dynamic_sections_created
14794 || h
->elf
.dynindx
== -1)
14795 plt
= htab
->elf
.iplt
;
14796 relocation
= (plt
->output_section
->vma
14797 + plt
->output_offset
14798 + ent
->plt
.offset
);
14800 unresolved_reloc
= FALSE
;
14808 /* Relocation value is TOC base. */
14809 relocation
= TOCstart
;
14810 if (r_symndx
== STN_UNDEF
)
14811 relocation
+= htab
->sec_info
[input_section
->id
].toc_off
;
14812 else if (unresolved_reloc
)
14814 else if (sec
!= NULL
&& sec
->id
< htab
->sec_info_arr_size
)
14815 relocation
+= htab
->sec_info
[sec
->id
].toc_off
;
14817 unresolved_reloc
= TRUE
;
14820 /* TOC16 relocs. We want the offset relative to the TOC base,
14821 which is the address of the start of the TOC plus 0x8000.
14822 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14824 case R_PPC64_TOC16
:
14825 case R_PPC64_TOC16_LO
:
14826 case R_PPC64_TOC16_HI
:
14827 case R_PPC64_TOC16_DS
:
14828 case R_PPC64_TOC16_LO_DS
:
14829 case R_PPC64_TOC16_HA
:
14830 addend
-= TOCstart
+ htab
->sec_info
[input_section
->id
].toc_off
;
14833 /* Relocate against the beginning of the section. */
14834 case R_PPC64_SECTOFF
:
14835 case R_PPC64_SECTOFF_LO
:
14836 case R_PPC64_SECTOFF_HI
:
14837 case R_PPC64_SECTOFF_DS
:
14838 case R_PPC64_SECTOFF_LO_DS
:
14839 case R_PPC64_SECTOFF_HA
:
14841 addend
-= sec
->output_section
->vma
;
14844 case R_PPC64_REL16
:
14845 case R_PPC64_REL16_LO
:
14846 case R_PPC64_REL16_HI
:
14847 case R_PPC64_REL16_HA
:
14848 case R_PPC64_REL16DX_HA
:
14851 case R_PPC64_REL14
:
14852 case R_PPC64_REL14_BRNTAKEN
:
14853 case R_PPC64_REL14_BRTAKEN
:
14854 case R_PPC64_REL24
:
14857 case R_PPC64_TPREL16
:
14858 case R_PPC64_TPREL16_LO
:
14859 case R_PPC64_TPREL16_HI
:
14860 case R_PPC64_TPREL16_HA
:
14861 case R_PPC64_TPREL16_DS
:
14862 case R_PPC64_TPREL16_LO_DS
:
14863 case R_PPC64_TPREL16_HIGH
:
14864 case R_PPC64_TPREL16_HIGHA
:
14865 case R_PPC64_TPREL16_HIGHER
:
14866 case R_PPC64_TPREL16_HIGHERA
:
14867 case R_PPC64_TPREL16_HIGHEST
:
14868 case R_PPC64_TPREL16_HIGHESTA
:
14870 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14871 && h
->elf
.dynindx
== -1)
14873 /* Make this relocation against an undefined weak symbol
14874 resolve to zero. This is really just a tweak, since
14875 code using weak externs ought to check that they are
14876 defined before using them. */
14877 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14879 insn
= bfd_get_32 (input_bfd
, p
);
14880 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14882 bfd_put_32 (input_bfd
, insn
, p
);
14885 if (htab
->elf
.tls_sec
!= NULL
)
14886 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14887 if (bfd_link_pic (info
))
14888 /* The TPREL16 relocs shouldn't really be used in shared
14889 libs as they will result in DT_TEXTREL being set, but
14890 support them anyway. */
14894 case R_PPC64_DTPREL16
:
14895 case R_PPC64_DTPREL16_LO
:
14896 case R_PPC64_DTPREL16_HI
:
14897 case R_PPC64_DTPREL16_HA
:
14898 case R_PPC64_DTPREL16_DS
:
14899 case R_PPC64_DTPREL16_LO_DS
:
14900 case R_PPC64_DTPREL16_HIGH
:
14901 case R_PPC64_DTPREL16_HIGHA
:
14902 case R_PPC64_DTPREL16_HIGHER
:
14903 case R_PPC64_DTPREL16_HIGHERA
:
14904 case R_PPC64_DTPREL16_HIGHEST
:
14905 case R_PPC64_DTPREL16_HIGHESTA
:
14906 if (htab
->elf
.tls_sec
!= NULL
)
14907 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14910 case R_PPC64_ADDR64_LOCAL
:
14911 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14916 case R_PPC64_DTPMOD64
:
14921 case R_PPC64_TPREL64
:
14922 if (htab
->elf
.tls_sec
!= NULL
)
14923 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14926 case R_PPC64_DTPREL64
:
14927 if (htab
->elf
.tls_sec
!= NULL
)
14928 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14929 /* Fall through. */
14931 /* Relocations that may need to be propagated if this is a
14933 case R_PPC64_REL30
:
14934 case R_PPC64_REL32
:
14935 case R_PPC64_REL64
:
14936 case R_PPC64_ADDR14
:
14937 case R_PPC64_ADDR14_BRNTAKEN
:
14938 case R_PPC64_ADDR14_BRTAKEN
:
14939 case R_PPC64_ADDR16
:
14940 case R_PPC64_ADDR16_DS
:
14941 case R_PPC64_ADDR16_HA
:
14942 case R_PPC64_ADDR16_HI
:
14943 case R_PPC64_ADDR16_HIGH
:
14944 case R_PPC64_ADDR16_HIGHA
:
14945 case R_PPC64_ADDR16_HIGHER
:
14946 case R_PPC64_ADDR16_HIGHERA
:
14947 case R_PPC64_ADDR16_HIGHEST
:
14948 case R_PPC64_ADDR16_HIGHESTA
:
14949 case R_PPC64_ADDR16_LO
:
14950 case R_PPC64_ADDR16_LO_DS
:
14951 case R_PPC64_ADDR24
:
14952 case R_PPC64_ADDR32
:
14953 case R_PPC64_ADDR64
:
14954 case R_PPC64_UADDR16
:
14955 case R_PPC64_UADDR32
:
14956 case R_PPC64_UADDR64
:
14958 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14961 if (NO_OPD_RELOCS
&& is_opd
)
14964 if (bfd_link_pic (info
)
14966 || h
->dyn_relocs
!= NULL
)
14967 && ((h
!= NULL
&& pc_dynrelocs (h
))
14968 || must_be_dyn_reloc (info
, r_type
)))
14970 ? h
->dyn_relocs
!= NULL
14971 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14973 bfd_boolean skip
, relocate
;
14978 /* When generating a dynamic object, these relocations
14979 are copied into the output file to be resolved at run
14985 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14986 input_section
, rel
->r_offset
);
14987 if (out_off
== (bfd_vma
) -1)
14989 else if (out_off
== (bfd_vma
) -2)
14990 skip
= TRUE
, relocate
= TRUE
;
14991 out_off
+= (input_section
->output_section
->vma
14992 + input_section
->output_offset
);
14993 outrel
.r_offset
= out_off
;
14994 outrel
.r_addend
= rel
->r_addend
;
14996 /* Optimize unaligned reloc use. */
14997 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14998 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14999 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
15000 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
15001 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
15002 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
15003 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
15004 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
15005 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
15008 memset (&outrel
, 0, sizeof outrel
);
15009 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
15011 && r_type
!= R_PPC64_TOC
)
15013 indx
= h
->elf
.dynindx
;
15014 BFD_ASSERT (indx
!= -1);
15015 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15019 /* This symbol is local, or marked to become local,
15020 or this is an opd section reloc which must point
15021 at a local function. */
15022 outrel
.r_addend
+= relocation
;
15023 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
15025 if (is_opd
&& h
!= NULL
)
15027 /* Lie about opd entries. This case occurs
15028 when building shared libraries and we
15029 reference a function in another shared
15030 lib. The same thing happens for a weak
15031 definition in an application that's
15032 overridden by a strong definition in a
15033 shared lib. (I believe this is a generic
15034 bug in binutils handling of weak syms.)
15035 In these cases we won't use the opd
15036 entry in this lib. */
15037 unresolved_reloc
= FALSE
;
15040 && r_type
== R_PPC64_ADDR64
15042 ? h
->elf
.type
== STT_GNU_IFUNC
15043 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
15044 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15047 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
15049 /* We need to relocate .opd contents for ld.so.
15050 Prelink also wants simple and consistent rules
15051 for relocs. This make all RELATIVE relocs have
15052 *r_offset equal to r_addend. */
15059 ? h
->elf
.type
== STT_GNU_IFUNC
15060 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15062 info
->callbacks
->einfo
15063 /* xgettext:c-format */
15064 (_("%H: %s for indirect "
15065 "function `%T' unsupported\n"),
15066 input_bfd
, input_section
, rel
->r_offset
,
15067 ppc64_elf_howto_table
[r_type
]->name
,
15071 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
15073 else if (sec
== NULL
|| sec
->owner
== NULL
)
15075 bfd_set_error (bfd_error_bad_value
);
15082 osec
= sec
->output_section
;
15083 indx
= elf_section_data (osec
)->dynindx
;
15087 if ((osec
->flags
& SEC_READONLY
) == 0
15088 && htab
->elf
.data_index_section
!= NULL
)
15089 osec
= htab
->elf
.data_index_section
;
15091 osec
= htab
->elf
.text_index_section
;
15092 indx
= elf_section_data (osec
)->dynindx
;
15094 BFD_ASSERT (indx
!= 0);
15096 /* We are turning this relocation into one
15097 against a section symbol, so subtract out
15098 the output section's address but not the
15099 offset of the input section in the output
15101 outrel
.r_addend
-= osec
->vma
;
15104 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
15108 sreloc
= elf_section_data (input_section
)->sreloc
;
15110 ? h
->elf
.type
== STT_GNU_IFUNC
15111 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
15113 sreloc
= htab
->elf
.irelplt
;
15115 htab
->local_ifunc_resolver
= 1;
15116 else if (is_static_defined (&h
->elf
))
15117 htab
->maybe_local_ifunc_resolver
= 1;
15119 if (sreloc
== NULL
)
15122 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
15125 loc
= sreloc
->contents
;
15126 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15127 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
15129 /* If this reloc is against an external symbol, it will
15130 be computed at runtime, so there's no need to do
15131 anything now. However, for the sake of prelink ensure
15132 that the section contents are a known value. */
15135 unresolved_reloc
= FALSE
;
15136 /* The value chosen here is quite arbitrary as ld.so
15137 ignores section contents except for the special
15138 case of .opd where the contents might be accessed
15139 before relocation. Choose zero, as that won't
15140 cause reloc overflow. */
15143 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15144 to improve backward compatibility with older
15146 if (r_type
== R_PPC64_ADDR64
)
15147 addend
= outrel
.r_addend
;
15148 /* Adjust pc_relative relocs to have zero in *r_offset. */
15149 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
15150 addend
= outrel
.r_offset
;
15156 case R_PPC64_GLOB_DAT
:
15157 case R_PPC64_JMP_SLOT
:
15158 case R_PPC64_JMP_IREL
:
15159 case R_PPC64_RELATIVE
:
15160 /* We shouldn't ever see these dynamic relocs in relocatable
15162 /* Fall through. */
15164 case R_PPC64_PLTGOT16
:
15165 case R_PPC64_PLTGOT16_DS
:
15166 case R_PPC64_PLTGOT16_HA
:
15167 case R_PPC64_PLTGOT16_HI
:
15168 case R_PPC64_PLTGOT16_LO
:
15169 case R_PPC64_PLTGOT16_LO_DS
:
15170 case R_PPC64_PLTREL32
:
15171 case R_PPC64_PLTREL64
:
15172 /* These ones haven't been implemented yet. */
15174 info
->callbacks
->einfo
15175 /* xgettext:c-format */
15176 (_("%P: %B: %s is not supported for `%T'\n"),
15178 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
15180 bfd_set_error (bfd_error_invalid_operation
);
15185 /* Multi-instruction sequences that access the TOC can be
15186 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15187 to nop; addi rb,r2,x; */
15193 case R_PPC64_GOT_TLSLD16_HI
:
15194 case R_PPC64_GOT_TLSGD16_HI
:
15195 case R_PPC64_GOT_TPREL16_HI
:
15196 case R_PPC64_GOT_DTPREL16_HI
:
15197 case R_PPC64_GOT16_HI
:
15198 case R_PPC64_TOC16_HI
:
15199 /* These relocs would only be useful if building up an
15200 offset to later add to r2, perhaps in an indexed
15201 addressing mode instruction. Don't try to optimize.
15202 Unfortunately, the possibility of someone building up an
15203 offset like this or even with the HA relocs, means that
15204 we need to check the high insn when optimizing the low
15208 case R_PPC64_GOT_TLSLD16_HA
:
15209 case R_PPC64_GOT_TLSGD16_HA
:
15210 case R_PPC64_GOT_TPREL16_HA
:
15211 case R_PPC64_GOT_DTPREL16_HA
:
15212 case R_PPC64_GOT16_HA
:
15213 case R_PPC64_TOC16_HA
:
15214 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15215 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15217 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15218 bfd_put_32 (input_bfd
, NOP
, p
);
15222 case R_PPC64_GOT_TLSLD16_LO
:
15223 case R_PPC64_GOT_TLSGD16_LO
:
15224 case R_PPC64_GOT_TPREL16_LO_DS
:
15225 case R_PPC64_GOT_DTPREL16_LO_DS
:
15226 case R_PPC64_GOT16_LO
:
15227 case R_PPC64_GOT16_LO_DS
:
15228 case R_PPC64_TOC16_LO
:
15229 case R_PPC64_TOC16_LO_DS
:
15230 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
15231 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
15233 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
15234 insn
= bfd_get_32 (input_bfd
, p
);
15235 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
15237 /* Transform addic to addi when we change reg. */
15238 insn
&= ~((0x3f << 26) | (0x1f << 16));
15239 insn
|= (14u << 26) | (2 << 16);
15243 insn
&= ~(0x1f << 16);
15246 bfd_put_32 (input_bfd
, insn
, p
);
15251 /* Do any further special processing. */
15252 howto
= ppc64_elf_howto_table
[(int) r_type
];
15258 case R_PPC64_REL16_HA
:
15259 case R_PPC64_REL16DX_HA
:
15260 case R_PPC64_ADDR16_HA
:
15261 case R_PPC64_ADDR16_HIGHA
:
15262 case R_PPC64_ADDR16_HIGHERA
:
15263 case R_PPC64_ADDR16_HIGHESTA
:
15264 case R_PPC64_TOC16_HA
:
15265 case R_PPC64_SECTOFF_HA
:
15266 case R_PPC64_TPREL16_HA
:
15267 case R_PPC64_TPREL16_HIGHA
:
15268 case R_PPC64_TPREL16_HIGHERA
:
15269 case R_PPC64_TPREL16_HIGHESTA
:
15270 case R_PPC64_DTPREL16_HA
:
15271 case R_PPC64_DTPREL16_HIGHA
:
15272 case R_PPC64_DTPREL16_HIGHERA
:
15273 case R_PPC64_DTPREL16_HIGHESTA
:
15274 /* It's just possible that this symbol is a weak symbol
15275 that's not actually defined anywhere. In that case,
15276 'sec' would be NULL, and we should leave the symbol
15277 alone (it will be set to zero elsewhere in the link). */
15280 /* Fall through. */
15282 case R_PPC64_GOT16_HA
:
15283 case R_PPC64_PLTGOT16_HA
:
15284 case R_PPC64_PLT16_HA
:
15285 case R_PPC64_GOT_TLSGD16_HA
:
15286 case R_PPC64_GOT_TLSLD16_HA
:
15287 case R_PPC64_GOT_TPREL16_HA
:
15288 case R_PPC64_GOT_DTPREL16_HA
:
15289 /* Add 0x10000 if sign bit in 0:15 is set.
15290 Bits 0:15 are not used. */
15294 case R_PPC64_ADDR16_DS
:
15295 case R_PPC64_ADDR16_LO_DS
:
15296 case R_PPC64_GOT16_DS
:
15297 case R_PPC64_GOT16_LO_DS
:
15298 case R_PPC64_PLT16_LO_DS
:
15299 case R_PPC64_SECTOFF_DS
:
15300 case R_PPC64_SECTOFF_LO_DS
:
15301 case R_PPC64_TOC16_DS
:
15302 case R_PPC64_TOC16_LO_DS
:
15303 case R_PPC64_PLTGOT16_DS
:
15304 case R_PPC64_PLTGOT16_LO_DS
:
15305 case R_PPC64_GOT_TPREL16_DS
:
15306 case R_PPC64_GOT_TPREL16_LO_DS
:
15307 case R_PPC64_GOT_DTPREL16_DS
:
15308 case R_PPC64_GOT_DTPREL16_LO_DS
:
15309 case R_PPC64_TPREL16_DS
:
15310 case R_PPC64_TPREL16_LO_DS
:
15311 case R_PPC64_DTPREL16_DS
:
15312 case R_PPC64_DTPREL16_LO_DS
:
15313 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15315 /* If this reloc is against an lq, lxv, or stxv insn, then
15316 the value must be a multiple of 16. This is somewhat of
15317 a hack, but the "correct" way to do this by defining _DQ
15318 forms of all the _DS relocs bloats all reloc switches in
15319 this file. It doesn't make much sense to use these
15320 relocs in data, so testing the insn should be safe. */
15321 if ((insn
& (0x3f << 26)) == (56u << 26)
15322 || ((insn
& (0x3f << 26)) == (61u << 26) && (insn
& 3) == 1))
15324 relocation
+= addend
;
15325 addend
= insn
& (mask
^ 3);
15326 if ((relocation
& mask
) != 0)
15328 relocation
^= relocation
& mask
;
15329 info
->callbacks
->einfo
15330 /* xgettext:c-format */
15331 (_("%H: error: %s not a multiple of %u\n"),
15332 input_bfd
, input_section
, rel
->r_offset
,
15335 bfd_set_error (bfd_error_bad_value
);
15342 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15343 because such sections are not SEC_ALLOC and thus ld.so will
15344 not process them. */
15345 if (unresolved_reloc
15346 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
15347 && h
->elf
.def_dynamic
)
15348 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
15349 rel
->r_offset
) != (bfd_vma
) -1)
15351 info
->callbacks
->einfo
15352 /* xgettext:c-format */
15353 (_("%H: unresolvable %s against `%T'\n"),
15354 input_bfd
, input_section
, rel
->r_offset
,
15356 h
->elf
.root
.root
.string
);
15360 /* 16-bit fields in insns mostly have signed values, but a
15361 few insns have 16-bit unsigned values. Really, we should
15362 have different reloc types. */
15363 if (howto
->complain_on_overflow
!= complain_overflow_dont
15364 && howto
->dst_mask
== 0xffff
15365 && (input_section
->flags
& SEC_CODE
) != 0)
15367 enum complain_overflow complain
= complain_overflow_signed
;
15369 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
15370 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
15371 complain
= complain_overflow_bitfield
;
15372 else if (howto
->rightshift
== 0
15373 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
15374 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
15375 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
15376 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
15377 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
15378 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
15379 complain
= complain_overflow_unsigned
;
15380 if (howto
->complain_on_overflow
!= complain
)
15382 alt_howto
= *howto
;
15383 alt_howto
.complain_on_overflow
= complain
;
15384 howto
= &alt_howto
;
15388 if (r_type
== R_PPC64_REL16DX_HA
)
15390 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15391 if (rel
->r_offset
+ 4 > input_section
->size
)
15392 r
= bfd_reloc_outofrange
;
15395 relocation
+= addend
;
15396 relocation
-= (rel
->r_offset
15397 + input_section
->output_offset
15398 + input_section
->output_section
->vma
);
15399 relocation
= (bfd_signed_vma
) relocation
>> 16;
15400 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
15402 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
15403 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
15405 if (relocation
+ 0x8000 > 0xffff)
15406 r
= bfd_reloc_overflow
;
15410 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
15411 rel
->r_offset
, relocation
, addend
);
15413 if (r
!= bfd_reloc_ok
)
15415 char *more_info
= NULL
;
15416 const char *reloc_name
= howto
->name
;
15418 if (reloc_dest
!= DEST_NORMAL
)
15420 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
15421 if (more_info
!= NULL
)
15423 strcpy (more_info
, reloc_name
);
15424 strcat (more_info
, (reloc_dest
== DEST_OPD
15425 ? " (OPD)" : " (stub)"));
15426 reloc_name
= more_info
;
15430 if (r
== bfd_reloc_overflow
)
15432 /* On code like "if (foo) foo();" don't report overflow
15433 on a branch to zero when foo is undefined. */
15435 && (reloc_dest
== DEST_STUB
15437 && (h
->elf
.root
.type
== bfd_link_hash_undefweak
15438 || h
->elf
.root
.type
== bfd_link_hash_undefined
)
15439 && is_branch_reloc (r_type
))))
15440 info
->callbacks
->reloc_overflow (info
, &h
->elf
.root
,
15441 sym_name
, reloc_name
,
15443 input_bfd
, input_section
,
15448 info
->callbacks
->einfo
15449 /* xgettext:c-format */
15450 (_("%H: %s against `%T': error %d\n"),
15451 input_bfd
, input_section
, rel
->r_offset
,
15452 reloc_name
, sym_name
, (int) r
);
15455 if (more_info
!= NULL
)
15465 Elf_Internal_Shdr
*rel_hdr
;
15466 size_t deleted
= rel
- wrel
;
15468 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
15469 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15470 if (rel_hdr
->sh_size
== 0)
15472 /* It is too late to remove an empty reloc section. Leave
15474 ??? What is wrong with an empty section??? */
15475 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
15478 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
15479 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
15480 input_section
->reloc_count
-= deleted
;
15483 /* If we're emitting relocations, then shortly after this function
15484 returns, reloc offsets and addends for this section will be
15485 adjusted. Worse, reloc symbol indices will be for the output
15486 file rather than the input. Save a copy of the relocs for
15487 opd_entry_value. */
15488 if (is_opd
&& (info
->emitrelocations
|| bfd_link_relocatable (info
)))
15491 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
15492 rel
= bfd_alloc (input_bfd
, amt
);
15493 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
15494 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
15497 memcpy (rel
, relocs
, amt
);
15502 /* Adjust the value of any local symbols in opd sections. */
15505 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
15506 const char *name ATTRIBUTE_UNUSED
,
15507 Elf_Internal_Sym
*elfsym
,
15508 asection
*input_sec
,
15509 struct elf_link_hash_entry
*h
)
15511 struct _opd_sec_data
*opd
;
15518 opd
= get_opd_info (input_sec
);
15519 if (opd
== NULL
|| opd
->adjust
== NULL
)
15522 value
= elfsym
->st_value
- input_sec
->output_offset
;
15523 if (!bfd_link_relocatable (info
))
15524 value
-= input_sec
->output_section
->vma
;
15526 adjust
= opd
->adjust
[OPD_NDX (value
)];
15530 elfsym
->st_value
+= adjust
;
15534 /* Finish up dynamic symbol handling. We set the contents of various
15535 dynamic sections here. */
15538 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
15539 struct bfd_link_info
*info
,
15540 struct elf_link_hash_entry
*h
,
15541 Elf_Internal_Sym
*sym
)
15543 struct ppc_link_hash_table
*htab
;
15544 struct plt_entry
*ent
;
15545 Elf_Internal_Rela rela
;
15548 htab
= ppc_hash_table (info
);
15552 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
15553 if (ent
->plt
.offset
!= (bfd_vma
) -1)
15555 /* This symbol has an entry in the procedure linkage
15556 table. Set it up. */
15557 if (!htab
->elf
.dynamic_sections_created
15558 || h
->dynindx
== -1)
15560 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
15562 && (h
->root
.type
== bfd_link_hash_defined
15563 || h
->root
.type
== bfd_link_hash_defweak
));
15564 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
15565 + htab
->elf
.iplt
->output_offset
15566 + ent
->plt
.offset
);
15568 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
15570 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
15571 rela
.r_addend
= (h
->root
.u
.def
.value
15572 + h
->root
.u
.def
.section
->output_offset
15573 + h
->root
.u
.def
.section
->output_section
->vma
15575 loc
= (htab
->elf
.irelplt
->contents
15576 + (htab
->elf
.irelplt
->reloc_count
++
15577 * sizeof (Elf64_External_Rela
)));
15578 htab
->local_ifunc_resolver
= 1;
15582 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
15583 + htab
->elf
.splt
->output_offset
15584 + ent
->plt
.offset
);
15585 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
15586 rela
.r_addend
= ent
->addend
;
15587 loc
= (htab
->elf
.srelplt
->contents
15588 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
15589 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
15590 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
15591 htab
->maybe_local_ifunc_resolver
= 1;
15593 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15595 if (!htab
->opd_abi
)
15597 if (!h
->def_regular
)
15599 /* Mark the symbol as undefined, rather than as
15600 defined in glink. Leave the value if there were
15601 any relocations where pointer equality matters
15602 (this is a clue for the dynamic linker, to make
15603 function pointer comparisons work between an
15604 application and shared library), otherwise set it
15606 sym
->st_shndx
= SHN_UNDEF
;
15607 if (!h
->pointer_equality_needed
)
15609 else if (!h
->ref_regular_nonweak
)
15611 /* This breaks function pointer comparisons, but
15612 that is better than breaking tests for a NULL
15613 function pointer. */
15622 /* This symbol needs a copy reloc. Set it up. */
15625 if (h
->dynindx
== -1
15626 || (h
->root
.type
!= bfd_link_hash_defined
15627 && h
->root
.type
!= bfd_link_hash_defweak
)
15628 || htab
->elf
.srelbss
== NULL
15629 || htab
->elf
.sreldynrelro
== NULL
)
15632 rela
.r_offset
= (h
->root
.u
.def
.value
15633 + h
->root
.u
.def
.section
->output_section
->vma
15634 + h
->root
.u
.def
.section
->output_offset
);
15635 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15637 if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
15638 srel
= htab
->elf
.sreldynrelro
;
15640 srel
= htab
->elf
.srelbss
;
15641 loc
= srel
->contents
;
15642 loc
+= srel
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15643 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15649 /* Used to decide how to sort relocs in an optimal manner for the
15650 dynamic linker, before writing them out. */
15652 static enum elf_reloc_type_class
15653 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15654 const asection
*rel_sec
,
15655 const Elf_Internal_Rela
*rela
)
15657 enum elf_ppc64_reloc_type r_type
;
15658 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15660 if (rel_sec
== htab
->elf
.irelplt
)
15661 return reloc_class_ifunc
;
15663 r_type
= ELF64_R_TYPE (rela
->r_info
);
15666 case R_PPC64_RELATIVE
:
15667 return reloc_class_relative
;
15668 case R_PPC64_JMP_SLOT
:
15669 return reloc_class_plt
;
15671 return reloc_class_copy
;
15673 return reloc_class_normal
;
15677 /* Finish up the dynamic sections. */
15680 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15681 struct bfd_link_info
*info
)
15683 struct ppc_link_hash_table
*htab
;
15687 htab
= ppc_hash_table (info
);
15691 dynobj
= htab
->elf
.dynobj
;
15692 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15694 if (htab
->elf
.dynamic_sections_created
)
15696 Elf64_External_Dyn
*dyncon
, *dynconend
;
15698 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15701 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15702 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15703 for (; dyncon
< dynconend
; dyncon
++)
15705 Elf_Internal_Dyn dyn
;
15708 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15715 case DT_PPC64_GLINK
:
15717 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15718 /* We stupidly defined DT_PPC64_GLINK to be the start
15719 of glink rather than the first entry point, which is
15720 what ld.so needs, and now have a bigger stub to
15721 support automatic multiple TOCs. */
15722 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15726 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15729 dyn
.d_un
.d_ptr
= s
->vma
;
15733 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15734 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15735 if (htab
->has_plt_localentry0
)
15736 dyn
.d_un
.d_val
|= PPC64_OPT_LOCALENTRY
;
15739 case DT_PPC64_OPDSZ
:
15740 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15743 dyn
.d_un
.d_val
= s
->size
;
15747 s
= htab
->elf
.splt
;
15748 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15752 s
= htab
->elf
.srelplt
;
15753 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15757 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15761 if (htab
->local_ifunc_resolver
)
15762 info
->callbacks
->einfo
15763 (_("%X%P: text relocations and GNU indirect "
15764 "functions will result in a segfault at runtime\n"));
15765 else if (htab
->maybe_local_ifunc_resolver
)
15766 info
->callbacks
->einfo
15767 (_("%P: warning: text relocations and GNU indirect "
15768 "functions may result in a segfault at runtime\n"));
15772 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15776 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0
15777 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
15779 /* Fill in the first entry in the global offset table.
15780 We use it to hold the link-time TOCbase. */
15781 bfd_put_64 (output_bfd
,
15782 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15783 htab
->elf
.sgot
->contents
);
15785 /* Set .got entry size. */
15786 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15789 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0
15790 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
15792 /* Set .plt entry size. */
15793 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15794 = PLT_ENTRY_SIZE (htab
);
15797 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15798 brlt ourselves if emitrelocations. */
15799 if (htab
->brlt
!= NULL
15800 && htab
->brlt
->reloc_count
!= 0
15801 && !_bfd_elf_link_output_relocs (output_bfd
,
15803 elf_section_data (htab
->brlt
)->rela
.hdr
,
15804 elf_section_data (htab
->brlt
)->relocs
,
15808 if (htab
->glink
!= NULL
15809 && htab
->glink
->reloc_count
!= 0
15810 && !_bfd_elf_link_output_relocs (output_bfd
,
15812 elf_section_data (htab
->glink
)->rela
.hdr
,
15813 elf_section_data (htab
->glink
)->relocs
,
15817 if (htab
->glink_eh_frame
!= NULL
15818 && htab
->glink_eh_frame
->size
!= 0)
15822 struct map_stub
*group
;
15825 p
= htab
->glink_eh_frame
->contents
;
15826 p
+= (sizeof (glink_eh_frame_cie
) + align
- 1) & -align
;
15828 for (group
= htab
->group
; group
!= NULL
; group
= group
->next
)
15829 if (group
->stub_sec
!= NULL
)
15831 /* Offset to stub section. */
15832 val
= (group
->stub_sec
->output_section
->vma
15833 + group
->stub_sec
->output_offset
);
15834 val
-= (htab
->glink_eh_frame
->output_section
->vma
15835 + htab
->glink_eh_frame
->output_offset
15836 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15837 if (val
+ 0x80000000 > 0xffffffff)
15839 info
->callbacks
->einfo
15840 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15841 group
->stub_sec
->name
);
15844 bfd_put_32 (dynobj
, val
, p
+ 8);
15845 p
+= stub_eh_frame_size (group
, align
);
15847 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15849 /* Offset to .glink. */
15850 val
= (htab
->glink
->output_section
->vma
15851 + htab
->glink
->output_offset
15853 val
-= (htab
->glink_eh_frame
->output_section
->vma
15854 + htab
->glink_eh_frame
->output_offset
15855 + (p
+ 8 - htab
->glink_eh_frame
->contents
));
15856 if (val
+ 0x80000000 > 0xffffffff)
15858 info
->callbacks
->einfo
15859 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15860 htab
->glink
->name
);
15863 bfd_put_32 (dynobj
, val
, p
+ 8);
15864 p
+= (24 + align
- 1) & -align
;
15867 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15868 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15869 htab
->glink_eh_frame
,
15870 htab
->glink_eh_frame
->contents
))
15874 /* We need to handle writing out multiple GOT sections ourselves,
15875 since we didn't add them to DYNOBJ. We know dynobj is the first
15877 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15881 if (!is_ppc64_elf (dynobj
))
15884 s
= ppc64_elf_tdata (dynobj
)->got
;
15887 && s
->output_section
!= bfd_abs_section_ptr
15888 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15889 s
->contents
, s
->output_offset
,
15892 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15895 && s
->output_section
!= bfd_abs_section_ptr
15896 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15897 s
->contents
, s
->output_offset
,
15905 #include "elf64-target.h"
15907 /* FreeBSD support */
15909 #undef TARGET_LITTLE_SYM
15910 #undef TARGET_LITTLE_NAME
15912 #undef TARGET_BIG_SYM
15913 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15914 #undef TARGET_BIG_NAME
15915 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15918 #define ELF_OSABI ELFOSABI_FREEBSD
15921 #define elf64_bed elf64_powerpc_fbsd_bed
15923 #include "elf64-target.h"