1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2015 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_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
142 /* Offset of tp and dtp pointers from start of TLS block. */
143 #define TP_OFFSET 0x7000
144 #define DTP_OFFSET 0x8000
146 /* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
148 insert an addi to adjust r11. */
149 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
150 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
155 #define BCTR 0x4e800420 /* bctr */
157 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
158 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
161 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
164 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166 #define BNECTR 0x4ca20420 /* bnectr+ */
167 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
169 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
170 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
173 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
175 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
240 abiversion (bfd
*abfd
)
242 return elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
;
246 set_abiversion (bfd
*abfd
, int ver
)
248 elf_elfheader (abfd
)->e_flags
&= ~EF_PPC64_ABI
;
249 elf_elfheader (abfd
)->e_flags
|= ver
& EF_PPC64_ABI
;
252 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
254 /* Relocation HOWTO's. */
255 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
257 static reloc_howto_type ppc64_elf_howto_raw
[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE
, /* type */
261 3, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_dont
, /* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_PPC64_NONE", /* name */
268 FALSE
, /* partial_inplace */
271 FALSE
), /* pcrel_offset */
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32
, /* type */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE
, /* pc_relative */
280 complain_overflow_bitfield
, /* complain_on_overflow */
281 bfd_elf_generic_reloc
, /* special_function */
282 "R_PPC64_ADDR32", /* name */
283 FALSE
, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 FALSE
), /* pcrel_offset */
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24
, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE
, /* pc_relative */
296 complain_overflow_bitfield
, /* complain_on_overflow */
297 bfd_elf_generic_reloc
, /* special_function */
298 "R_PPC64_ADDR24", /* name */
299 FALSE
, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 FALSE
), /* pcrel_offset */
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16
, /* type */
307 1, /* 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_ADDR16", /* name */
314 FALSE
, /* partial_inplace */
316 0xffff, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO
, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_dont
,/* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
329 FALSE
, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI
, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_signed
, /* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
344 FALSE
, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA
, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE
, /* pc_relative */
357 complain_overflow_signed
, /* complain_on_overflow */
358 ppc64_elf_ha_reloc
, /* special_function */
359 "R_PPC64_ADDR16_HA", /* name */
360 FALSE
, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE
), /* pcrel_offset */
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14
, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE
, /* pc_relative */
373 complain_overflow_signed
, /* complain_on_overflow */
374 ppc64_elf_branch_reloc
, /* special_function */
375 "R_PPC64_ADDR14", /* name */
376 FALSE
, /* partial_inplace */
378 0x0000fffc, /* dst_mask */
379 FALSE
), /* pcrel_offset */
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE
, /* pc_relative */
390 complain_overflow_signed
, /* complain_on_overflow */
391 ppc64_elf_brtaken_reloc
, /* special_function */
392 "R_PPC64_ADDR14_BRTAKEN",/* name */
393 FALSE
, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE
), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_signed
, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc
, /* special_function */
409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
410 FALSE
, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE
), /* pcrel_offset */
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24
, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 TRUE
, /* pc_relative */
422 complain_overflow_signed
, /* complain_on_overflow */
423 ppc64_elf_branch_reloc
, /* special_function */
424 "R_PPC64_REL24", /* name */
425 FALSE
, /* partial_inplace */
427 0x03fffffc, /* dst_mask */
428 TRUE
), /* pcrel_offset */
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14
, /* 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_REL14", /* name */
440 FALSE
, /* partial_inplace */
442 0x0000fffc, /* dst_mask */
443 TRUE
), /* pcrel_offset */
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
448 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE
, /* pc_relative */
454 complain_overflow_signed
, /* complain_on_overflow */
455 ppc64_elf_brtaken_reloc
, /* special_function */
456 "R_PPC64_REL14_BRTAKEN", /* name */
457 FALSE
, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE
), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
465 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE
, /* pc_relative */
471 complain_overflow_signed
, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc
, /* special_function */
473 "R_PPC64_REL14_BRNTAKEN",/* name */
474 FALSE
, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE
), /* pcrel_offset */
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
481 HOWTO (R_PPC64_GOT16
, /* type */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE
, /* pc_relative */
487 complain_overflow_signed
, /* complain_on_overflow */
488 ppc64_elf_unhandled_reloc
, /* special_function */
489 "R_PPC64_GOT16", /* name */
490 FALSE
, /* partial_inplace */
492 0xffff, /* dst_mask */
493 FALSE
), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
497 HOWTO (R_PPC64_GOT16_LO
, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE
, /* pc_relative */
503 complain_overflow_dont
, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc
, /* special_function */
505 "R_PPC64_GOT16_LO", /* name */
506 FALSE
, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE
), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_HI
, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_signed
,/* complain_on_overflow */
520 ppc64_elf_unhandled_reloc
, /* special_function */
521 "R_PPC64_GOT16_HI", /* name */
522 FALSE
, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE
), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HA
, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE
, /* pc_relative */
535 complain_overflow_signed
,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc
, /* special_function */
537 "R_PPC64_GOT16_HA", /* name */
538 FALSE
, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE
), /* pcrel_offset */
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY
, /* type */
550 0, /* this one is variable size */
552 FALSE
, /* pc_relative */
554 complain_overflow_dont
, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc
, /* special_function */
556 "R_PPC64_COPY", /* name */
557 FALSE
, /* partial_inplace */
560 FALSE
), /* pcrel_offset */
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
564 HOWTO (R_PPC64_GLOB_DAT
, /* type */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
568 FALSE
, /* pc_relative */
570 complain_overflow_dont
, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc
, /* special_function */
572 "R_PPC64_GLOB_DAT", /* name */
573 FALSE
, /* partial_inplace */
575 ONES (64), /* dst_mask */
576 FALSE
), /* pcrel_offset */
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT
, /* type */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_dont
, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc
, /* special_function */
588 "R_PPC64_JMP_SLOT", /* name */
589 FALSE
, /* partial_inplace */
592 FALSE
), /* pcrel_offset */
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
597 HOWTO (R_PPC64_RELATIVE
, /* type */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
601 FALSE
, /* pc_relative */
603 complain_overflow_dont
, /* complain_on_overflow */
604 bfd_elf_generic_reloc
, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
606 FALSE
, /* partial_inplace */
608 ONES (64), /* dst_mask */
609 FALSE
), /* pcrel_offset */
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32
, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE
, /* pc_relative */
618 complain_overflow_bitfield
, /* complain_on_overflow */
619 bfd_elf_generic_reloc
, /* special_function */
620 "R_PPC64_UADDR32", /* name */
621 FALSE
, /* partial_inplace */
623 0xffffffff, /* dst_mask */
624 FALSE
), /* pcrel_offset */
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16
, /* type */
629 1, /* 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_UADDR16", /* name */
636 FALSE
, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE
), /* pcrel_offset */
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32
, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE
, /* pc_relative */
648 complain_overflow_signed
, /* complain_on_overflow */
649 bfd_elf_generic_reloc
, /* special_function */
650 "R_PPC64_REL32", /* name */
651 FALSE
, /* partial_inplace */
653 0xffffffff, /* dst_mask */
654 TRUE
), /* pcrel_offset */
656 /* 32-bit relocation to the symbol's procedure linkage table. */
657 HOWTO (R_PPC64_PLT32
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_bitfield
, /* complain_on_overflow */
664 ppc64_elf_unhandled_reloc
, /* special_function */
665 "R_PPC64_PLT32", /* name */
666 FALSE
, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 FALSE
), /* pcrel_offset */
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32
, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 TRUE
, /* pc_relative */
679 complain_overflow_signed
, /* complain_on_overflow */
680 bfd_elf_generic_reloc
, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
682 FALSE
, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 TRUE
), /* pcrel_offset */
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
689 HOWTO (R_PPC64_PLT16_LO
, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE
, /* pc_relative */
695 complain_overflow_dont
, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc
, /* special_function */
697 "R_PPC64_PLT16_LO", /* name */
698 FALSE
, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE
), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_HI
, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE
, /* pc_relative */
711 complain_overflow_signed
, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc
, /* special_function */
713 "R_PPC64_PLT16_HI", /* name */
714 FALSE
, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE
), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HA
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_signed
, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc
, /* special_function */
729 "R_PPC64_PLT16_HA", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* 16-bit section relative relocation. */
736 HOWTO (R_PPC64_SECTOFF
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_signed
, /* complain_on_overflow */
743 ppc64_elf_sectoff_reloc
, /* special_function */
744 "R_PPC64_SECTOFF", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
751 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_dont
, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc
, /* special_function */
759 "R_PPC64_SECTOFF_LO", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_signed
, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc
, /* special_function */
774 "R_PPC64_SECTOFF_HI", /* name */
775 FALSE
, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE
), /* pcrel_offset */
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA
, /* 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_ha_reloc
, /* special_function */
789 "R_PPC64_SECTOFF_HA", /* name */
790 FALSE
, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE
), /* pcrel_offset */
795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30
, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE
, /* pc_relative */
802 complain_overflow_dont
, /* complain_on_overflow */
803 bfd_elf_generic_reloc
, /* special_function */
804 "R_PPC64_REL30", /* name */
805 FALSE
, /* partial_inplace */
807 0xfffffffc, /* dst_mask */
808 TRUE
), /* pcrel_offset */
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64
, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 FALSE
, /* pc_relative */
819 complain_overflow_dont
, /* complain_on_overflow */
820 bfd_elf_generic_reloc
, /* special_function */
821 "R_PPC64_ADDR64", /* name */
822 FALSE
, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 FALSE
), /* pcrel_offset */
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE
, /* pc_relative */
834 complain_overflow_dont
, /* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
837 FALSE
, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE
), /* pcrel_offset */
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE
, /* pc_relative */
850 complain_overflow_dont
, /* complain_on_overflow */
851 ppc64_elf_ha_reloc
, /* special_function */
852 "R_PPC64_ADDR16_HIGHERA", /* name */
853 FALSE
, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE
, /* pc_relative */
865 complain_overflow_dont
, /* complain_on_overflow */
866 bfd_elf_generic_reloc
, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
868 FALSE
, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE
), /* pcrel_offset */
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE
, /* pc_relative */
881 complain_overflow_dont
, /* complain_on_overflow */
882 ppc64_elf_ha_reloc
, /* special_function */
883 "R_PPC64_ADDR16_HIGHESTA", /* name */
884 FALSE
, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE
), /* pcrel_offset */
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64
, /* type */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 bfd_elf_generic_reloc
, /* special_function */
898 "R_PPC64_UADDR64", /* name */
899 FALSE
, /* partial_inplace */
901 ONES (64), /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64
, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 TRUE
, /* pc_relative */
911 complain_overflow_dont
, /* complain_on_overflow */
912 bfd_elf_generic_reloc
, /* special_function */
913 "R_PPC64_REL64", /* name */
914 FALSE
, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 TRUE
), /* pcrel_offset */
919 /* 64-bit relocation to the symbol's procedure linkage table. */
920 HOWTO (R_PPC64_PLT64
, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 FALSE
, /* pc_relative */
926 complain_overflow_dont
, /* complain_on_overflow */
927 ppc64_elf_unhandled_reloc
, /* special_function */
928 "R_PPC64_PLT64", /* name */
929 FALSE
, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 FALSE
), /* pcrel_offset */
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64
, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 TRUE
, /* pc_relative */
943 complain_overflow_dont
, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc
, /* special_function */
945 "R_PPC64_PLTREL64", /* name */
946 FALSE
, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 TRUE
), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation. */
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16
, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE
, /* pc_relative */
960 complain_overflow_signed
, /* complain_on_overflow */
961 ppc64_elf_toc_reloc
, /* special_function */
962 "R_PPC64_TOC16", /* name */
963 FALSE
, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE
), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation without overflow. */
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO
, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_dont
, /* complain_on_overflow */
978 ppc64_elf_toc_reloc
, /* special_function */
979 "R_PPC64_TOC16_LO", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation, high 16 bits. */
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI
, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE
, /* pc_relative */
994 complain_overflow_signed
, /* complain_on_overflow */
995 ppc64_elf_toc_reloc
, /* special_function */
996 "R_PPC64_TOC16_HI", /* name */
997 FALSE
, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA
, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE
, /* pc_relative */
1013 complain_overflow_signed
, /* complain_on_overflow */
1014 ppc64_elf_toc_ha_reloc
, /* special_function */
1015 "R_PPC64_TOC16_HA", /* name */
1016 FALSE
, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE
), /* pcrel_offset */
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC
, /* type */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1028 FALSE
, /* pc_relative */
1030 complain_overflow_dont
, /* complain_on_overflow */
1031 ppc64_elf_toc64_reloc
, /* special_function */
1032 "R_PPC64_TOC", /* name */
1033 FALSE
, /* partial_inplace */
1035 ONES (64), /* dst_mask */
1036 FALSE
), /* pcrel_offset */
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16
, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE
, /* pc_relative */
1053 complain_overflow_signed
, /* complain_on_overflow */
1054 ppc64_elf_unhandled_reloc
, /* special_function */
1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE
, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE
), /* pcrel_offset */
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE
, /* pc_relative */
1069 complain_overflow_dont
, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc
, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE
, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE
), /* pcrel_offset */
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE
, /* pc_relative */
1085 complain_overflow_signed
, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc
, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE
, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE
), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE
, /* pc_relative */
1103 complain_overflow_signed
, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc
, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE
, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE
), /* pcrel_offset */
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE
, /* pc_relative */
1118 complain_overflow_signed
, /* complain_on_overflow */
1119 bfd_elf_generic_reloc
, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE
, /* partial_inplace */
1123 0xfffc, /* dst_mask */
1124 FALSE
), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_dont
,/* complain_on_overflow */
1134 bfd_elf_generic_reloc
, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE
, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS
, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE
, /* pc_relative */
1148 complain_overflow_signed
, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc
, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE
, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE
), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE
, /* pc_relative */
1163 complain_overflow_dont
, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc
, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE
, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE
), /* pcrel_offset */
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_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_PLT16_LO_DS", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE
, /* pc_relative */
1193 complain_overflow_signed
, /* complain_on_overflow */
1194 ppc64_elf_sectoff_reloc
, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE
, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE
), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_dont
, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc
, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE
, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS
, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE
, /* pc_relative */
1223 complain_overflow_signed
, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc
, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE
, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE
), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE
, /* pc_relative */
1238 complain_overflow_dont
, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc
, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE
, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE
), /* pcrel_offset */
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1248 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE
, /* pc_relative */
1254 complain_overflow_signed
, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc
, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE
, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE
), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE
, /* pc_relative */
1270 complain_overflow_dont
, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc
, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE
, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE
), /* pcrel_offset */
1278 /* Marker relocs for TLS. */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 bfd_elf_generic_reloc
, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE
, /* partial_inplace */
1291 FALSE
), /* pcrel_offset */
1293 HOWTO (R_PPC64_TLSGD
,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE
, /* pc_relative */
1299 complain_overflow_dont
, /* complain_on_overflow */
1300 bfd_elf_generic_reloc
, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE
, /* partial_inplace */
1305 FALSE
), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSLD
,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE
, /* pc_relative */
1313 complain_overflow_dont
, /* complain_on_overflow */
1314 bfd_elf_generic_reloc
, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE
, /* partial_inplace */
1319 FALSE
), /* pcrel_offset */
1321 HOWTO (R_PPC64_TOCSAVE
,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE
, /* pc_relative */
1327 complain_overflow_dont
, /* complain_on_overflow */
1328 bfd_elf_generic_reloc
, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE
, /* partial_inplace */
1333 FALSE
), /* pcrel_offset */
1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64
,
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE
, /* pc_relative */
1343 complain_overflow_dont
, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc
, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE
, /* partial_inplace */
1348 ONES (64), /* dst_mask */
1349 FALSE
), /* pcrel_offset */
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64
,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE
, /* pc_relative */
1360 complain_overflow_dont
, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc
, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE
, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE
), /* pcrel_offset */
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16
,
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_signed
, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE
, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO
,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_dont
, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc
, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE
, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI
,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE
, /* pc_relative */
1405 complain_overflow_signed
, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc
, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE
, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE
), /* pcrel_offset */
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA
,
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_HA", /* name */
1423 FALSE
, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE
), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_dont
, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc
, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE
, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
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_HIGHERA", /* name */
1453 FALSE
, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE
), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1460 48, /* 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_HIGHEST", /* name */
1468 FALSE
, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
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_HIGHESTA", /* name */
1483 FALSE
, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE
), /* pcrel_offset */
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS
,
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_signed
, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc
, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE
, /* partial_inplace */
1500 0xfffc, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_dont
, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc
, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE
, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64
,
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE
, /* pc_relative */
1526 complain_overflow_dont
, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc
, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE
, /* partial_inplace */
1531 ONES (64), /* dst_mask */
1532 FALSE
), /* pcrel_offset */
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16
,
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE
, /* pc_relative */
1541 complain_overflow_signed
, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc
, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE
, /* partial_inplace */
1546 0xffff, /* dst_mask */
1547 FALSE
), /* pcrel_offset */
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO
,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_dont
, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc
, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE
, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE
), /* pcrel_offset */
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI
,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_signed
, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc
, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE
, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE
), /* pcrel_offset */
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA
,
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_HA", /* name */
1589 FALSE
, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE
), /* pcrel_offset */
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER
,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_dont
, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc
, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA
,
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_HIGHERA", /* name */
1619 FALSE
, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1626 48, /* 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_HIGHEST", /* name */
1634 FALSE
, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
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_HIGHESTA", /* name */
1649 FALSE
, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE
), /* pcrel_offset */
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS
,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_signed
, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc
, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE
, /* partial_inplace */
1666 0xfffc, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS
,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_dont
, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc
, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE
, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16
,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE
, /* pc_relative */
1693 complain_overflow_signed
, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc
, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
1696 FALSE
, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE
), /* pcrel_offset */
1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE
, /* pc_relative */
1708 complain_overflow_dont
, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc
, /* special_function */
1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
1711 FALSE
, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE
), /* pcrel_offset */
1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE
, /* pc_relative */
1723 complain_overflow_signed
, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc
, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
1726 FALSE
, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE
), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
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_HA", /* name */
1741 FALSE
, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE
), /* pcrel_offset */
1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16
,
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE
, /* pc_relative */
1755 complain_overflow_signed
, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc
, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
1758 FALSE
, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE
), /* pcrel_offset */
1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_dont
, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc
, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
1773 FALSE
, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1780 16, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_signed
, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
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_HA", /* name */
1803 FALSE
, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE
), /* pcrel_offset */
1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE
, /* pc_relative */
1816 complain_overflow_signed
, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc
, /* special_function */
1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
1819 FALSE
, /* partial_inplace */
1821 0xfffc, /* dst_mask */
1822 FALSE
), /* pcrel_offset */
1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE
, /* pc_relative */
1831 complain_overflow_dont
, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc
, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1834 FALSE
, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE
), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1841 16, /* rightshift */
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE
, /* pc_relative */
1846 complain_overflow_signed
, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc
, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
1849 FALSE
, /* partial_inplace */
1851 0xffff, /* dst_mask */
1852 FALSE
), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
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_HA", /* name */
1864 FALSE
, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE
), /* pcrel_offset */
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE
, /* pc_relative */
1877 complain_overflow_signed
, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc
, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
1880 FALSE
, /* partial_inplace */
1882 0xfffc, /* dst_mask */
1883 FALSE
), /* pcrel_offset */
1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE
, /* pc_relative */
1892 complain_overflow_dont
, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc
, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1895 FALSE
, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE
), /* pcrel_offset */
1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1902 16, /* rightshift */
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE
, /* pc_relative */
1907 complain_overflow_signed
, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc
, /* special_function */
1909 "R_PPC64_GOT_TPREL16_HI", /* name */
1910 FALSE
, /* partial_inplace */
1912 0xffff, /* dst_mask */
1913 FALSE
), /* pcrel_offset */
1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA
,
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_HA", /* name */
1925 FALSE
, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE
), /* pcrel_offset */
1930 HOWTO (R_PPC64_JMP_IREL
, /* type */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1934 FALSE
, /* pc_relative */
1936 complain_overflow_dont
, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc
, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE
, /* partial_inplace */
1942 FALSE
), /* pcrel_offset */
1944 HOWTO (R_PPC64_IRELATIVE
, /* type */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE
, /* pc_relative */
1950 complain_overflow_dont
, /* complain_on_overflow */
1951 bfd_elf_generic_reloc
, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE
, /* partial_inplace */
1955 ONES (64), /* dst_mask */
1956 FALSE
), /* pcrel_offset */
1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16
, /* type */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1963 TRUE
, /* pc_relative */
1965 complain_overflow_signed
, /* complain_on_overflow */
1966 bfd_elf_generic_reloc
, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE
, /* partial_inplace */
1970 0xffff, /* dst_mask */
1971 TRUE
), /* pcrel_offset */
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO
, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE
, /* pc_relative */
1980 complain_overflow_dont
,/* complain_on_overflow */
1981 bfd_elf_generic_reloc
, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE
, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE
), /* pcrel_offset */
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI
, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE
, /* pc_relative */
1995 complain_overflow_signed
, /* complain_on_overflow */
1996 bfd_elf_generic_reloc
, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE
, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE
), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA
, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE
, /* pc_relative */
2011 complain_overflow_signed
, /* complain_on_overflow */
2012 ppc64_elf_ha_reloc
, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE
, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE
), /* pcrel_offset */
2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH
, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE
, /* pc_relative */
2026 complain_overflow_dont
, /* complain_on_overflow */
2027 bfd_elf_generic_reloc
, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE
, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 FALSE
), /* pcrel_offset */
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA
, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2039 FALSE
, /* pc_relative */
2041 complain_overflow_dont
, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc
, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE
, /* partial_inplace */
2046 0xffff, /* dst_mask */
2047 FALSE
), /* pcrel_offset */
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH
,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE
, /* pc_relative */
2056 complain_overflow_dont
, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc
, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE
, /* partial_inplace */
2061 0xffff, /* dst_mask */
2062 FALSE
), /* pcrel_offset */
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA
,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE
, /* pc_relative */
2071 complain_overflow_dont
, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc
, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE
, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE
), /* pcrel_offset */
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH
,
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_unhandled_reloc
, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE
, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE
), /* pcrel_offset */
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA
,
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_TPREL16_HIGHA", /* name */
2104 FALSE
, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE
), /* pcrel_offset */
2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL
, /* type */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2114 FALSE
, /* pc_relative */
2116 complain_overflow_dont
, /* complain_on_overflow */
2117 bfd_elf_generic_reloc
, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE
, /* partial_inplace */
2121 ONES (64), /* dst_mask */
2122 FALSE
), /* pcrel_offset */
2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE
, /* pc_relative */
2131 complain_overflow_dont
, /* complain_on_overflow */
2132 NULL
, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
2134 FALSE
, /* partial_inplace */
2137 FALSE
), /* pcrel_offset */
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE
, /* pc_relative */
2146 complain_overflow_dont
, /* complain_on_overflow */
2147 NULL
, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
2149 FALSE
, /* partial_inplace */
2152 FALSE
), /* pcrel_offset */
2156 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2160 ppc_howto_init (void)
2162 unsigned int i
, type
;
2165 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2168 type
= ppc64_elf_howto_raw
[i
].type
;
2169 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2170 / sizeof (ppc64_elf_howto_table
[0])));
2171 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2175 static reloc_howto_type
*
2176 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2177 bfd_reloc_code_real_type code
)
2179 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2181 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2182 /* Initialize howto table if needed. */
2190 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2192 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2194 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2196 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2198 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2200 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2202 case BFD_RELOC_PPC64_ADDR16_HIGH
: r
= R_PPC64_ADDR16_HIGH
;
2204 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2206 case BFD_RELOC_PPC64_ADDR16_HIGHA
: r
= R_PPC64_ADDR16_HIGHA
;
2208 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2210 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2212 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2214 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2216 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2218 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2220 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2222 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2224 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2226 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2228 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2230 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2232 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2234 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2236 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2238 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2240 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2242 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2244 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2246 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2248 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2250 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2252 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2254 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2256 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2258 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2260 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2262 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2264 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2266 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2268 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2270 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2272 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2274 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2276 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2278 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2280 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2282 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2286 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2288 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2290 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2292 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2294 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2296 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2298 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2300 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2304 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2306 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2308 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2312 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2314 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2316 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2318 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2320 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2322 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2324 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2326 case BFD_RELOC_PPC64_TPREL16_HIGH
: r
= R_PPC64_TPREL16_HIGH
;
2328 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2330 case BFD_RELOC_PPC64_TPREL16_HIGHA
: r
= R_PPC64_TPREL16_HIGHA
;
2332 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2334 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2336 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2338 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2340 case BFD_RELOC_PPC64_DTPREL16_HIGH
: r
= R_PPC64_DTPREL16_HIGH
;
2342 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA
: r
= R_PPC64_DTPREL16_HIGHA
;
2346 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2348 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2356 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2364 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2372 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2380 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2392 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2404 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2406 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2408 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2410 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2412 case BFD_RELOC_PPC64_ADDR64_LOCAL
: r
= R_PPC64_ADDR64_LOCAL
;
2414 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2416 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2420 return ppc64_elf_howto_table
[r
];
2423 static reloc_howto_type
*
2424 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2430 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2432 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2433 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2434 return &ppc64_elf_howto_raw
[i
];
2439 /* Set the howto pointer for a PowerPC ELF reloc. */
2442 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2443 Elf_Internal_Rela
*dst
)
2447 /* Initialize howto table if needed. */
2448 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2451 type
= ELF64_R_TYPE (dst
->r_info
);
2452 if (type
>= (sizeof (ppc64_elf_howto_table
)
2453 / sizeof (ppc64_elf_howto_table
[0])))
2455 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2457 type
= R_PPC64_NONE
;
2459 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2462 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2464 static bfd_reloc_status_type
2465 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2466 void *data
, asection
*input_section
,
2467 bfd
*output_bfd
, char **error_message
)
2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2472 if (output_bfd
!= NULL
)
2473 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2474 input_section
, output_bfd
, error_message
);
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2479 reloc_entry
->addend
+= 0x8000;
2480 return bfd_reloc_continue
;
2483 static bfd_reloc_status_type
2484 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2485 void *data
, asection
*input_section
,
2486 bfd
*output_bfd
, char **error_message
)
2488 if (output_bfd
!= NULL
)
2489 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2490 input_section
, output_bfd
, error_message
);
2492 if (strcmp (symbol
->section
->name
, ".opd") == 0
2493 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2495 bfd_vma dest
= opd_entry_value (symbol
->section
,
2496 symbol
->value
+ reloc_entry
->addend
,
2498 if (dest
!= (bfd_vma
) -1)
2499 reloc_entry
->addend
= dest
- (symbol
->value
2500 + symbol
->section
->output_section
->vma
2501 + symbol
->section
->output_offset
);
2505 elf_symbol_type
*elfsym
= (elf_symbol_type
*) symbol
;
2507 if (symbol
->section
->owner
!= abfd
2508 && abiversion (symbol
->section
->owner
) >= 2)
2512 for (i
= 0; i
< symbol
->section
->owner
->symcount
; ++i
)
2514 asymbol
*symdef
= symbol
->section
->owner
->outsymbols
[i
];
2516 if (strcmp (symdef
->name
, symbol
->name
) == 0)
2518 elfsym
= (elf_symbol_type
*) symdef
;
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym
->internal_elf_sym
.st_other
);
2526 return bfd_reloc_continue
;
2529 static bfd_reloc_status_type
2530 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2531 void *data
, asection
*input_section
,
2532 bfd
*output_bfd
, char **error_message
)
2535 enum elf_ppc64_reloc_type r_type
;
2536 bfd_size_type octets
;
2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2
= TRUE
;
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2543 if (output_bfd
!= NULL
)
2544 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2545 input_section
, output_bfd
, error_message
);
2547 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2548 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2549 insn
&= ~(0x01 << 21);
2550 r_type
= reloc_entry
->howto
->type
;
2551 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2552 || r_type
== R_PPC64_REL14_BRTAKEN
)
2553 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2562 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2572 if (!bfd_is_com_section (symbol
->section
))
2573 target
= symbol
->value
;
2574 target
+= symbol
->section
->output_section
->vma
;
2575 target
+= symbol
->section
->output_offset
;
2576 target
+= reloc_entry
->addend
;
2578 from
= (reloc_entry
->address
2579 + input_section
->output_offset
2580 + input_section
->output_section
->vma
);
2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma
) (target
- from
) < 0)
2586 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2588 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2589 input_section
, output_bfd
, error_message
);
2592 static bfd_reloc_status_type
2593 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2594 void *data
, asection
*input_section
,
2595 bfd
*output_bfd
, char **error_message
)
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2600 if (output_bfd
!= NULL
)
2601 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2602 input_section
, output_bfd
, error_message
);
2604 /* Subtract the symbol section base address. */
2605 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2606 return bfd_reloc_continue
;
2609 static bfd_reloc_status_type
2610 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2611 void *data
, asection
*input_section
,
2612 bfd
*output_bfd
, char **error_message
)
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2617 if (output_bfd
!= NULL
)
2618 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2619 input_section
, output_bfd
, error_message
);
2621 /* Subtract the symbol section base address. */
2622 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry
->addend
+= 0x8000;
2626 return bfd_reloc_continue
;
2629 static bfd_reloc_status_type
2630 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2631 void *data
, asection
*input_section
,
2632 bfd
*output_bfd
, char **error_message
)
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd
!= NULL
)
2640 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2641 input_section
, output_bfd
, error_message
);
2643 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2645 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2647 /* Subtract the TOC base address. */
2648 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2649 return bfd_reloc_continue
;
2652 static bfd_reloc_status_type
2653 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2654 void *data
, asection
*input_section
,
2655 bfd
*output_bfd
, char **error_message
)
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2662 if (output_bfd
!= NULL
)
2663 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2664 input_section
, output_bfd
, error_message
);
2666 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2668 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2670 /* Subtract the TOC base address. */
2671 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry
->addend
+= 0x8000;
2675 return bfd_reloc_continue
;
2678 static bfd_reloc_status_type
2679 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2680 void *data
, asection
*input_section
,
2681 bfd
*output_bfd
, char **error_message
)
2684 bfd_size_type octets
;
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 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2695 TOCstart
= ppc64_elf_set_toc (NULL
, input_section
->output_section
->owner
);
2697 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2698 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2699 return bfd_reloc_ok
;
2702 static bfd_reloc_status_type
2703 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2704 void *data
, asection
*input_section
,
2705 bfd
*output_bfd
, char **error_message
)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd
!= NULL
)
2711 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2712 input_section
, output_bfd
, error_message
);
2714 if (error_message
!= NULL
)
2716 static char buf
[60];
2717 sprintf (buf
, "generic linker can't handle %s",
2718 reloc_entry
->howto
->name
);
2719 *error_message
= buf
;
2721 return bfd_reloc_dangerous
;
2724 /* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2728 struct got_entry
*next
;
2730 /* The symbol addend that we'll be placing in the GOT. */
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2739 Point to the BFD owning this GOT entry. */
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
2744 unsigned char tls_type
;
2746 /* Non-zero if got.ent points to real entry. */
2747 unsigned char is_indirect
;
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 bfd_signed_vma refcount
;
2754 struct got_entry
*ent
;
2758 /* The same for PLT. */
2761 struct plt_entry
*next
;
2767 bfd_signed_vma refcount
;
2772 struct ppc64_elf_obj_tdata
2774 struct elf_obj_tdata elf
;
2776 /* Shortcuts to dynamic linker sections. */
2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection
*deleted_section
;
2784 /* TLS local dynamic got entry handling. Support for multiple GOT
2785 sections means we potentially need one of these for each input bfd. */
2786 struct got_entry tlsld_got
;
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela
*relocs
;
2792 /* Section contents. */
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
2798 unsigned int has_small_toc_reloc
: 1;
2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn
: 1;
2805 #define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2808 #define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2811 #define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
2815 /* Override the generic function because we store some extras. */
2818 ppc64_elf_mkobject (bfd
*abfd
)
2820 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2824 /* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2828 ppc64_elf_object_p (bfd
*abfd
)
2830 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2832 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2834 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd
->arch_info
= abfd
->arch_info
->next
;
2838 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2844 /* Support for core dump NOTE sections. */
2847 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2849 size_t offset
, size
;
2851 if (note
->descsz
!= 504)
2855 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2858 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2866 size
, note
->descpos
+ offset
);
2870 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2872 if (note
->descsz
!= 136)
2875 elf_tdata (abfd
)->core
->pid
2876 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2877 elf_tdata (abfd
)->core
->program
2878 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2879 elf_tdata (abfd
)->core
->command
2880 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2886 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2899 va_start (ap
, note_type
);
2900 memset (data
, 0, sizeof (data
));
2901 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2902 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2904 return elfcore_write_note (abfd
, buf
, bufsiz
,
2905 "CORE", note_type
, data
, sizeof (data
));
2916 va_start (ap
, note_type
);
2917 memset (data
, 0, 112);
2918 pid
= va_arg (ap
, long);
2919 bfd_put_32 (abfd
, pid
, data
+ 32);
2920 cursig
= va_arg (ap
, int);
2921 bfd_put_16 (abfd
, cursig
, data
+ 12);
2922 greg
= va_arg (ap
, const void *);
2923 memcpy (data
+ 112, greg
, 384);
2924 memset (data
+ 496, 0, 8);
2926 return elfcore_write_note (abfd
, buf
, bufsiz
,
2927 "CORE", note_type
, data
, sizeof (data
));
2932 /* Add extra PPC sections. */
2934 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2942 { NULL
, 0, 0, 0, 0 }
2945 enum _ppc64_sec_type
{
2951 struct _ppc64_elf_section_data
2953 struct bfd_elf_section_data elf
;
2957 /* An array with one entry for each opd function descriptor,
2958 and some spares since opd entries may be either 16 or 24 bytes. */
2959 #define OPD_NDX(OFF) ((OFF) >> 4)
2960 struct _opd_sec_data
2962 /* Points to the function code section for local opd entries. */
2963 asection
**func_sec
;
2965 /* After editing .opd, adjust references to opd local syms. */
2969 /* An array for toc sections, indexed by offset/8. */
2970 struct _toc_sec_data
2972 /* Specifies the relocation symbol index used at a given toc offset. */
2975 /* And the relocation addend. */
2980 enum _ppc64_sec_type sec_type
:2;
2982 /* Flag set when small branches are detected. Used to
2983 select suitable defaults for the stub group size. */
2984 unsigned int has_14bit_branch
:1;
2987 #define ppc64_elf_section_data(sec) \
2988 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2991 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2993 if (!sec
->used_by_bfd
)
2995 struct _ppc64_elf_section_data
*sdata
;
2996 bfd_size_type amt
= sizeof (*sdata
);
2998 sdata
= bfd_zalloc (abfd
, amt
);
3001 sec
->used_by_bfd
= sdata
;
3004 return _bfd_elf_new_section_hook (abfd
, sec
);
3007 static struct _opd_sec_data
*
3008 get_opd_info (asection
* sec
)
3011 && ppc64_elf_section_data (sec
) != NULL
3012 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3013 return &ppc64_elf_section_data (sec
)->u
.opd
;
3017 /* Parameters for the qsort hook. */
3018 static bfd_boolean synthetic_relocatable
;
3020 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3023 compare_symbols (const void *ap
, const void *bp
)
3025 const asymbol
*a
= * (const asymbol
**) ap
;
3026 const asymbol
*b
= * (const asymbol
**) bp
;
3028 /* Section symbols first. */
3029 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3031 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3034 /* then .opd symbols. */
3035 if (strcmp (a
->section
->name
, ".opd") == 0
3036 && strcmp (b
->section
->name
, ".opd") != 0)
3038 if (strcmp (a
->section
->name
, ".opd") != 0
3039 && strcmp (b
->section
->name
, ".opd") == 0)
3042 /* then other code symbols. */
3043 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3044 == (SEC_CODE
| SEC_ALLOC
)
3045 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3046 != (SEC_CODE
| SEC_ALLOC
))
3049 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3050 != (SEC_CODE
| SEC_ALLOC
)
3051 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3052 == (SEC_CODE
| SEC_ALLOC
))
3055 if (synthetic_relocatable
)
3057 if (a
->section
->id
< b
->section
->id
)
3060 if (a
->section
->id
> b
->section
->id
)
3064 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3067 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3070 /* For syms with the same value, prefer strong dynamic global function
3071 syms over other syms. */
3072 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3075 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3078 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3081 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3084 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3087 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3090 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3093 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3099 /* Search SYMS for a symbol of the given VALUE. */
3102 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
3110 mid
= (lo
+ hi
) >> 1;
3111 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3113 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3123 mid
= (lo
+ hi
) >> 1;
3124 if (syms
[mid
]->section
->id
< id
)
3126 else if (syms
[mid
]->section
->id
> id
)
3128 else if (syms
[mid
]->value
< value
)
3130 else if (syms
[mid
]->value
> value
)
3140 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3142 bfd_vma vma
= *(bfd_vma
*) ptr
;
3143 return ((section
->flags
& SEC_ALLOC
) != 0
3144 && section
->vma
<= vma
3145 && vma
< section
->vma
+ section
->size
);
3148 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3149 entry syms. Also generate @plt symbols for the glink branch table. */
3152 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3153 long static_count
, asymbol
**static_syms
,
3154 long dyn_count
, asymbol
**dyn_syms
,
3161 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3162 asection
*opd
= NULL
;
3163 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3165 int abi
= abiversion (abfd
);
3171 opd
= bfd_get_section_by_name (abfd
, ".opd");
3172 if (opd
== NULL
&& abi
== 1)
3176 symcount
= static_count
;
3178 symcount
+= dyn_count
;
3182 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3186 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3188 /* Use both symbol tables. */
3189 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3190 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3192 else if (!relocatable
&& static_count
== 0)
3193 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3195 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3197 synthetic_relocatable
= relocatable
;
3198 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3200 if (!relocatable
&& symcount
> 1)
3203 /* Trim duplicate syms, since we may have merged the normal and
3204 dynamic symbols. Actually, we only care about syms that have
3205 different values, so trim any with the same value. */
3206 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3207 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3208 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3209 syms
[j
++] = syms
[i
];
3214 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3218 for (; i
< symcount
; ++i
)
3219 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3220 != (SEC_CODE
| SEC_ALLOC
))
3221 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3225 for (; i
< symcount
; ++i
)
3226 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3230 for (; i
< symcount
; ++i
)
3231 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3235 for (; i
< symcount
; ++i
)
3236 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3237 != (SEC_CODE
| SEC_ALLOC
))
3245 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3250 if (opdsymend
== secsymend
)
3253 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3254 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3258 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3265 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3269 while (r
< opd
->relocation
+ relcount
3270 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3273 if (r
== opd
->relocation
+ relcount
)
3276 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3279 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3282 sym
= *r
->sym_ptr_ptr
;
3283 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3284 sym
->section
->id
, sym
->value
+ r
->addend
))
3287 size
+= sizeof (asymbol
);
3288 size
+= strlen (syms
[i
]->name
) + 2;
3292 s
= *ret
= bfd_malloc (size
);
3299 names
= (char *) (s
+ count
);
3301 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3305 while (r
< opd
->relocation
+ relcount
3306 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3309 if (r
== opd
->relocation
+ relcount
)
3312 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3315 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3318 sym
= *r
->sym_ptr_ptr
;
3319 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3320 sym
->section
->id
, sym
->value
+ r
->addend
))
3325 s
->flags
|= BSF_SYNTHETIC
;
3326 s
->section
= sym
->section
;
3327 s
->value
= sym
->value
+ r
->addend
;
3330 len
= strlen (syms
[i
]->name
);
3331 memcpy (names
, syms
[i
]->name
, len
+ 1);
3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s
->udata
.p
= syms
[i
];
3342 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3343 bfd_byte
*contents
= NULL
;
3346 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3347 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3350 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3352 free_contents_and_exit
:
3360 for (i
= secsymend
; i
< opdsymend
; ++i
)
3364 /* Ignore bogus symbols. */
3365 if (syms
[i
]->value
> opd
->size
- 8)
3368 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3369 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3372 size
+= sizeof (asymbol
);
3373 size
+= strlen (syms
[i
]->name
) + 2;
3377 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3379 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3381 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3383 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3385 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3386 goto free_contents_and_exit
;
3388 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3389 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3392 extdynend
= extdyn
+ dynamic
->size
;
3393 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3395 Elf_Internal_Dyn dyn
;
3396 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3398 if (dyn
.d_tag
== DT_NULL
)
3401 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3403 /* The first glink stub starts at offset 32; see
3404 comment in ppc64_elf_finish_dynamic_sections. */
3405 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3406 /* The .glink section usually does not survive the final
3407 link; search for the section (usually .text) where the
3408 glink stubs now reside. */
3409 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3420 /* Determine __glink trampoline by reading the relative branch
3421 from the first glink stub. */
3423 unsigned int off
= 0;
3425 while (bfd_get_section_contents (abfd
, glink
, buf
,
3426 glink_vma
+ off
- glink
->vma
, 4))
3428 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3430 if ((insn
& ~0x3fffffc) == 0)
3432 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3441 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3443 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3446 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3447 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3448 goto free_contents_and_exit
;
3450 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3451 size
+= plt_count
* sizeof (asymbol
);
3453 p
= relplt
->relocation
;
3454 for (i
= 0; i
< plt_count
; i
++, p
++)
3456 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3458 size
+= sizeof ("+0x") - 1 + 16;
3463 s
= *ret
= bfd_malloc (size
);
3465 goto free_contents_and_exit
;
3467 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3469 for (i
= secsymend
; i
< opdsymend
; ++i
)
3473 if (syms
[i
]->value
> opd
->size
- 8)
3476 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3477 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3481 asection
*sec
= abfd
->sections
;
3488 long mid
= (lo
+ hi
) >> 1;
3489 if (syms
[mid
]->section
->vma
< ent
)
3491 else if (syms
[mid
]->section
->vma
> ent
)
3495 sec
= syms
[mid
]->section
;
3500 if (lo
>= hi
&& lo
> codesecsym
)
3501 sec
= syms
[lo
- 1]->section
;
3503 for (; sec
!= NULL
; sec
= sec
->next
)
3507 /* SEC_LOAD may not be set if SEC is from a separate debug
3509 if ((sec
->flags
& SEC_ALLOC
) == 0)
3511 if ((sec
->flags
& SEC_CODE
) != 0)
3514 s
->flags
|= BSF_SYNTHETIC
;
3515 s
->value
= ent
- s
->section
->vma
;
3518 len
= strlen (syms
[i
]->name
);
3519 memcpy (names
, syms
[i
]->name
, len
+ 1);
3521 /* Have udata.p point back to the original symbol this
3522 synthetic symbol was derived from. */
3523 s
->udata
.p
= syms
[i
];
3529 if (glink
!= NULL
&& relplt
!= NULL
)
3533 /* Add a symbol for the main glink trampoline. */
3534 memset (s
, 0, sizeof *s
);
3536 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3538 s
->value
= resolv_vma
- glink
->vma
;
3540 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3541 names
+= sizeof ("__glink_PLTresolve");
3546 /* FIXME: It would be very much nicer to put sym@plt on the
3547 stub rather than on the glink branch table entry. The
3548 objdump disassembler would then use a sensible symbol
3549 name on plt calls. The difficulty in doing so is
3550 a) finding the stubs, and,
3551 b) matching stubs against plt entries, and,
3552 c) there can be multiple stubs for a given plt entry.
3554 Solving (a) could be done by code scanning, but older
3555 ppc64 binaries used different stubs to current code.
3556 (b) is the tricky one since you need to known the toc
3557 pointer for at least one function that uses a pic stub to
3558 be able to calculate the plt address referenced.
3559 (c) means gdb would need to set multiple breakpoints (or
3560 find the glink branch itself) when setting breakpoints
3561 for pending shared library loads. */
3562 p
= relplt
->relocation
;
3563 for (i
= 0; i
< plt_count
; i
++, p
++)
3567 *s
= **p
->sym_ptr_ptr
;
3568 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3569 we are defining a symbol, ensure one of them is set. */
3570 if ((s
->flags
& BSF_LOCAL
) == 0)
3571 s
->flags
|= BSF_GLOBAL
;
3572 s
->flags
|= BSF_SYNTHETIC
;
3574 s
->value
= glink_vma
- glink
->vma
;
3577 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3578 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3582 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3583 names
+= sizeof ("+0x") - 1;
3584 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3585 names
+= strlen (names
);
3587 memcpy (names
, "@plt", sizeof ("@plt"));
3588 names
+= sizeof ("@plt");
3608 /* The following functions are specific to the ELF linker, while
3609 functions above are used generally. Those named ppc64_elf_* are
3610 called by the main ELF linker code. They appear in this file more
3611 or less in the order in which they are called. eg.
3612 ppc64_elf_check_relocs is called early in the link process,
3613 ppc64_elf_finish_dynamic_sections is one of the last functions
3616 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3617 functions have both a function code symbol and a function descriptor
3618 symbol. A call to foo in a relocatable object file looks like:
3625 The function definition in another object file might be:
3629 . .quad .TOC.@tocbase
3635 When the linker resolves the call during a static link, the branch
3636 unsurprisingly just goes to .foo and the .opd information is unused.
3637 If the function definition is in a shared library, things are a little
3638 different: The call goes via a plt call stub, the opd information gets
3639 copied to the plt, and the linker patches the nop.
3647 . std 2,40(1) # in practice, the call stub
3648 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3649 . addi 11,11,Lfoo@toc@l # this is the general idea
3657 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3659 The "reloc ()" notation is supposed to indicate that the linker emits
3660 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3663 What are the difficulties here? Well, firstly, the relocations
3664 examined by the linker in check_relocs are against the function code
3665 sym .foo, while the dynamic relocation in the plt is emitted against
3666 the function descriptor symbol, foo. Somewhere along the line, we need
3667 to carefully copy dynamic link information from one symbol to the other.
3668 Secondly, the generic part of the elf linker will make .foo a dynamic
3669 symbol as is normal for most other backends. We need foo dynamic
3670 instead, at least for an application final link. However, when
3671 creating a shared library containing foo, we need to have both symbols
3672 dynamic so that references to .foo are satisfied during the early
3673 stages of linking. Otherwise the linker might decide to pull in a
3674 definition from some other object, eg. a static library.
3676 Update: As of August 2004, we support a new convention. Function
3677 calls may use the function descriptor symbol, ie. "bl foo". This
3678 behaves exactly as "bl .foo". */
3680 /* Of those relocs that might be copied as dynamic relocs, this function
3681 selects those that must be copied when linking a shared library,
3682 even when the symbol is local. */
3685 must_be_dyn_reloc (struct bfd_link_info
*info
,
3686 enum elf_ppc64_reloc_type r_type
)
3698 case R_PPC64_TPREL16
:
3699 case R_PPC64_TPREL16_LO
:
3700 case R_PPC64_TPREL16_HI
:
3701 case R_PPC64_TPREL16_HA
:
3702 case R_PPC64_TPREL16_DS
:
3703 case R_PPC64_TPREL16_LO_DS
:
3704 case R_PPC64_TPREL16_HIGH
:
3705 case R_PPC64_TPREL16_HIGHA
:
3706 case R_PPC64_TPREL16_HIGHER
:
3707 case R_PPC64_TPREL16_HIGHERA
:
3708 case R_PPC64_TPREL16_HIGHEST
:
3709 case R_PPC64_TPREL16_HIGHESTA
:
3710 case R_PPC64_TPREL64
:
3711 return !info
->executable
;
3715 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3716 copying dynamic variables from a shared lib into an app's dynbss
3717 section, and instead use a dynamic relocation to point into the
3718 shared lib. With code that gcc generates, it's vital that this be
3719 enabled; In the PowerPC64 ABI, the address of a function is actually
3720 the address of a function descriptor, which resides in the .opd
3721 section. gcc uses the descriptor directly rather than going via the
3722 GOT as some other ABI's do, which means that initialized function
3723 pointers must reference the descriptor. Thus, a function pointer
3724 initialized to the address of a function in a shared library will
3725 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3726 redefines the function descriptor symbol to point to the copy. This
3727 presents a problem as a plt entry for that function is also
3728 initialized from the function descriptor symbol and the copy reloc
3729 may not be initialized first. */
3730 #define ELIMINATE_COPY_RELOCS 1
3732 /* Section name for stubs is the associated section name plus this
3734 #define STUB_SUFFIX ".stub"
3737 ppc_stub_long_branch:
3738 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3739 destination, but a 24 bit branch in a stub section will reach.
3742 ppc_stub_plt_branch:
3743 Similar to the above, but a 24 bit branch in the stub section won't
3744 reach its destination.
3745 . addis %r11,%r2,xxx@toc@ha
3746 . ld %r12,xxx@toc@l(%r11)
3751 Used to call a function in a shared library. If it so happens that
3752 the plt entry referenced crosses a 64k boundary, then an extra
3753 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3755 . addis %r11,%r2,xxx@toc@ha
3756 . ld %r12,xxx+0@toc@l(%r11)
3758 . ld %r2,xxx+8@toc@l(%r11)
3759 . ld %r11,xxx+16@toc@l(%r11)
3762 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3763 code to adjust the value and save r2 to support multiple toc sections.
3764 A ppc_stub_long_branch with an r2 offset looks like:
3766 . addis %r2,%r2,off@ha
3767 . addi %r2,%r2,off@l
3770 A ppc_stub_plt_branch with an r2 offset looks like:
3772 . addis %r11,%r2,xxx@toc@ha
3773 . ld %r12,xxx@toc@l(%r11)
3774 . addis %r2,%r2,off@ha
3775 . addi %r2,%r2,off@l
3779 In cases where the "addis" instruction would add zero, the "addis" is
3780 omitted and following instructions modified slightly in some cases.
3783 enum ppc_stub_type
{
3785 ppc_stub_long_branch
,
3786 ppc_stub_long_branch_r2off
,
3787 ppc_stub_plt_branch
,
3788 ppc_stub_plt_branch_r2off
,
3790 ppc_stub_plt_call_r2save
,
3791 ppc_stub_global_entry
3794 struct ppc_stub_hash_entry
{
3796 /* Base hash table entry structure. */
3797 struct bfd_hash_entry root
;
3799 enum ppc_stub_type stub_type
;
3801 /* The stub section. */
3804 /* Offset within stub_sec of the beginning of this stub. */
3805 bfd_vma stub_offset
;
3807 /* Given the symbol's value and its section we can determine its final
3808 value when building the stubs (so the stub knows where to jump. */
3809 bfd_vma target_value
;
3810 asection
*target_section
;
3812 /* The symbol table entry, if any, that this was derived from. */
3813 struct ppc_link_hash_entry
*h
;
3814 struct plt_entry
*plt_ent
;
3816 /* Where this stub is being called from, or, in the case of combined
3817 stub sections, the first input section in the group. */
3820 /* Symbol st_other. */
3821 unsigned char other
;
3824 struct ppc_branch_hash_entry
{
3826 /* Base hash table entry structure. */
3827 struct bfd_hash_entry root
;
3829 /* Offset within branch lookup table. */
3830 unsigned int offset
;
3832 /* Generation marker. */
3836 /* Used to track dynamic relocations for local symbols. */
3837 struct ppc_dyn_relocs
3839 struct ppc_dyn_relocs
*next
;
3841 /* The input section of the reloc. */
3844 /* Total number of relocs copied for the input section. */
3845 unsigned int count
: 31;
3847 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3848 unsigned int ifunc
: 1;
3851 struct ppc_link_hash_entry
3853 struct elf_link_hash_entry elf
;
3856 /* A pointer to the most recently used stub hash entry against this
3858 struct ppc_stub_hash_entry
*stub_cache
;
3860 /* A pointer to the next symbol starting with a '.' */
3861 struct ppc_link_hash_entry
*next_dot_sym
;
3864 /* Track dynamic relocs copied for this symbol. */
3865 struct elf_dyn_relocs
*dyn_relocs
;
3867 /* Link between function code and descriptor symbols. */
3868 struct ppc_link_hash_entry
*oh
;
3870 /* Flag function code and descriptor symbols. */
3871 unsigned int is_func
:1;
3872 unsigned int is_func_descriptor
:1;
3873 unsigned int fake
:1;
3875 /* Whether global opd/toc sym has been adjusted or not.
3876 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3877 should be set for all globals defined in any opd/toc section. */
3878 unsigned int adjust_done
:1;
3880 /* Set if we twiddled this symbol to weak at some stage. */
3881 unsigned int was_undefined
:1;
3883 /* Contexts in which symbol is used in the GOT (or TOC).
3884 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3885 corresponding relocs are encountered during check_relocs.
3886 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3887 indicate the corresponding GOT entry type is not needed.
3888 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3889 a TPREL one. We use a separate flag rather than setting TPREL
3890 just for convenience in distinguishing the two cases. */
3891 #define TLS_GD 1 /* GD reloc. */
3892 #define TLS_LD 2 /* LD reloc. */
3893 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3894 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3895 #define TLS_TLS 16 /* Any TLS reloc. */
3896 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3897 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3898 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3899 unsigned char tls_mask
;
3902 /* ppc64 ELF linker hash table. */
3904 struct ppc_link_hash_table
3906 struct elf_link_hash_table elf
;
3908 /* The stub hash table. */
3909 struct bfd_hash_table stub_hash_table
;
3911 /* Another hash table for plt_branch stubs. */
3912 struct bfd_hash_table branch_hash_table
;
3914 /* Hash table for function prologue tocsave. */
3915 htab_t tocsave_htab
;
3917 /* Various options and other info passed from the linker. */
3918 struct ppc64_elf_params
*params
;
3920 /* Array to keep track of which stub sections have been created, and
3921 information on stub grouping. */
3923 /* This is the section to which stubs in the group will be attached. */
3925 /* The stub section. */
3927 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3931 /* Temp used when calculating TOC pointers. */
3934 asection
*toc_first_sec
;
3936 /* Highest input section id. */
3939 /* Highest output section index. */
3942 /* Used when adding symbols. */
3943 struct ppc_link_hash_entry
*dot_syms
;
3945 /* List of input sections for each output section. */
3946 asection
**input_list
;
3948 /* Shortcuts to get to dynamic linker sections. */
3955 asection
*glink_eh_frame
;
3957 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3958 struct ppc_link_hash_entry
*tls_get_addr
;
3959 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3961 /* The size of reliplt used by got entry relocs. */
3962 bfd_size_type got_reli_size
;
3965 unsigned long stub_count
[ppc_stub_global_entry
];
3967 /* Number of stubs against global syms. */
3968 unsigned long stub_globals
;
3970 /* Set if we're linking code with function descriptors. */
3971 unsigned int opd_abi
:1;
3973 /* Support for multiple toc sections. */
3974 unsigned int do_multi_toc
:1;
3975 unsigned int multi_toc_needed
:1;
3976 unsigned int second_toc_pass
:1;
3977 unsigned int do_toc_opt
:1;
3980 unsigned int stub_error
:1;
3982 /* Temp used by ppc64_elf_before_check_relocs. */
3983 unsigned int twiddled_syms
:1;
3985 /* Incremented every time we size stubs. */
3986 unsigned int stub_iteration
;
3988 /* Small local sym cache. */
3989 struct sym_cache sym_cache
;
3992 /* Rename some of the generic section flags to better document how they
3995 /* Nonzero if this section has TLS related relocations. */
3996 #define has_tls_reloc sec_flg0
3998 /* Nonzero if this section has a call to __tls_get_addr. */
3999 #define has_tls_get_addr_call sec_flg1
4001 /* Nonzero if this section has any toc or got relocs. */
4002 #define has_toc_reloc sec_flg2
4004 /* Nonzero if this section has a call to another section that uses
4006 #define makes_toc_func_call sec_flg3
4008 /* Recursion protection when determining above flag. */
4009 #define call_check_in_progress sec_flg4
4010 #define call_check_done sec_flg5
4012 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4014 #define ppc_hash_table(p) \
4015 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4016 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4018 #define ppc_stub_hash_lookup(table, string, create, copy) \
4019 ((struct ppc_stub_hash_entry *) \
4020 bfd_hash_lookup ((table), (string), (create), (copy)))
4022 #define ppc_branch_hash_lookup(table, string, create, copy) \
4023 ((struct ppc_branch_hash_entry *) \
4024 bfd_hash_lookup ((table), (string), (create), (copy)))
4026 /* Create an entry in the stub hash table. */
4028 static struct bfd_hash_entry
*
4029 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4030 struct bfd_hash_table
*table
,
4033 /* Allocate the structure if it has not already been allocated by a
4037 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4042 /* Call the allocation method of the superclass. */
4043 entry
= bfd_hash_newfunc (entry
, table
, string
);
4046 struct ppc_stub_hash_entry
*eh
;
4048 /* Initialize the local fields. */
4049 eh
= (struct ppc_stub_hash_entry
*) entry
;
4050 eh
->stub_type
= ppc_stub_none
;
4051 eh
->stub_sec
= NULL
;
4052 eh
->stub_offset
= 0;
4053 eh
->target_value
= 0;
4054 eh
->target_section
= NULL
;
4064 /* Create an entry in the branch hash table. */
4066 static struct bfd_hash_entry
*
4067 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4068 struct bfd_hash_table
*table
,
4071 /* Allocate the structure if it has not already been allocated by a
4075 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4080 /* Call the allocation method of the superclass. */
4081 entry
= bfd_hash_newfunc (entry
, table
, string
);
4084 struct ppc_branch_hash_entry
*eh
;
4086 /* Initialize the local fields. */
4087 eh
= (struct ppc_branch_hash_entry
*) entry
;
4095 /* Create an entry in a ppc64 ELF linker hash table. */
4097 static struct bfd_hash_entry
*
4098 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4099 struct bfd_hash_table
*table
,
4102 /* Allocate the structure if it has not already been allocated by a
4106 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4111 /* Call the allocation method of the superclass. */
4112 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4115 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4117 memset (&eh
->u
.stub_cache
, 0,
4118 (sizeof (struct ppc_link_hash_entry
)
4119 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4121 /* When making function calls, old ABI code references function entry
4122 points (dot symbols), while new ABI code references the function
4123 descriptor symbol. We need to make any combination of reference and
4124 definition work together, without breaking archive linking.
4126 For a defined function "foo" and an undefined call to "bar":
4127 An old object defines "foo" and ".foo", references ".bar" (possibly
4129 A new object defines "foo" and references "bar".
4131 A new object thus has no problem with its undefined symbols being
4132 satisfied by definitions in an old object. On the other hand, the
4133 old object won't have ".bar" satisfied by a new object.
4135 Keep a list of newly added dot-symbols. */
4137 if (string
[0] == '.')
4139 struct ppc_link_hash_table
*htab
;
4141 htab
= (struct ppc_link_hash_table
*) table
;
4142 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4143 htab
->dot_syms
= eh
;
4150 struct tocsave_entry
{
4156 tocsave_htab_hash (const void *p
)
4158 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4159 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4163 tocsave_htab_eq (const void *p1
, const void *p2
)
4165 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4166 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4167 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4170 /* Destroy a ppc64 ELF linker hash table. */
4173 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4175 struct ppc_link_hash_table
*htab
;
4177 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4178 if (htab
->tocsave_htab
)
4179 htab_delete (htab
->tocsave_htab
);
4180 bfd_hash_table_free (&htab
->branch_hash_table
);
4181 bfd_hash_table_free (&htab
->stub_hash_table
);
4182 _bfd_elf_link_hash_table_free (obfd
);
4185 /* Create a ppc64 ELF linker hash table. */
4187 static struct bfd_link_hash_table
*
4188 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4190 struct ppc_link_hash_table
*htab
;
4191 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4193 htab
= bfd_zmalloc (amt
);
4197 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4198 sizeof (struct ppc_link_hash_entry
),
4205 /* Init the stub hash table too. */
4206 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4207 sizeof (struct ppc_stub_hash_entry
)))
4209 _bfd_elf_link_hash_table_free (abfd
);
4213 /* And the branch hash table. */
4214 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4215 sizeof (struct ppc_branch_hash_entry
)))
4217 bfd_hash_table_free (&htab
->stub_hash_table
);
4218 _bfd_elf_link_hash_table_free (abfd
);
4222 htab
->tocsave_htab
= htab_try_create (1024,
4226 if (htab
->tocsave_htab
== NULL
)
4228 ppc64_elf_link_hash_table_free (abfd
);
4231 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4233 /* Initializing two fields of the union is just cosmetic. We really
4234 only care about glist, but when compiled on a 32-bit host the
4235 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4236 debugger inspection of these fields look nicer. */
4237 htab
->elf
.init_got_refcount
.refcount
= 0;
4238 htab
->elf
.init_got_refcount
.glist
= NULL
;
4239 htab
->elf
.init_plt_refcount
.refcount
= 0;
4240 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4241 htab
->elf
.init_got_offset
.offset
= 0;
4242 htab
->elf
.init_got_offset
.glist
= NULL
;
4243 htab
->elf
.init_plt_offset
.offset
= 0;
4244 htab
->elf
.init_plt_offset
.glist
= NULL
;
4246 return &htab
->elf
.root
;
4249 /* Create sections for linker generated code. */
4252 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4254 struct ppc_link_hash_table
*htab
;
4257 htab
= ppc_hash_table (info
);
4259 /* Create .sfpr for code to save and restore fp regs. */
4260 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4261 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4262 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4264 if (htab
->sfpr
== NULL
4265 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4268 /* Create .glink for lazy dynamic linking support. */
4269 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4271 if (htab
->glink
== NULL
4272 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4275 if (!info
->no_ld_generated_unwind_info
)
4277 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4278 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4279 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4282 if (htab
->glink_eh_frame
== NULL
4283 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4287 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4288 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4289 if (htab
->elf
.iplt
== NULL
4290 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4293 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4294 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4296 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4297 if (htab
->elf
.irelplt
== NULL
4298 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4301 /* Create branch lookup table for plt_branch stubs. */
4302 flags
= (SEC_ALLOC
| SEC_LOAD
4303 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4304 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4306 if (htab
->brlt
== NULL
4307 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4313 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4314 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4315 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4318 if (htab
->relbrlt
== NULL
4319 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4325 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4328 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4329 struct ppc64_elf_params
*params
)
4331 struct ppc_link_hash_table
*htab
;
4333 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4335 /* Always hook our dynamic sections into the first bfd, which is the
4336 linker created stub bfd. This ensures that the GOT header is at
4337 the start of the output TOC section. */
4338 htab
= ppc_hash_table (info
);
4341 htab
->elf
.dynobj
= params
->stub_bfd
;
4342 htab
->params
= params
;
4344 if (info
->relocatable
)
4347 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4350 /* Build a name for an entry in the stub hash table. */
4353 ppc_stub_name (const asection
*input_section
,
4354 const asection
*sym_sec
,
4355 const struct ppc_link_hash_entry
*h
,
4356 const Elf_Internal_Rela
*rel
)
4361 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4362 offsets from a sym as a branch target? In fact, we could
4363 probably assume the addend is always zero. */
4364 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4368 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4369 stub_name
= bfd_malloc (len
);
4370 if (stub_name
== NULL
)
4373 len
= sprintf (stub_name
, "%08x.%s+%x",
4374 input_section
->id
& 0xffffffff,
4375 h
->elf
.root
.root
.string
,
4376 (int) rel
->r_addend
& 0xffffffff);
4380 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4381 stub_name
= bfd_malloc (len
);
4382 if (stub_name
== NULL
)
4385 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4386 input_section
->id
& 0xffffffff,
4387 sym_sec
->id
& 0xffffffff,
4388 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4389 (int) rel
->r_addend
& 0xffffffff);
4391 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4392 stub_name
[len
- 2] = 0;
4396 /* Look up an entry in the stub hash. Stub entries are cached because
4397 creating the stub name takes a bit of time. */
4399 static struct ppc_stub_hash_entry
*
4400 ppc_get_stub_entry (const asection
*input_section
,
4401 const asection
*sym_sec
,
4402 struct ppc_link_hash_entry
*h
,
4403 const Elf_Internal_Rela
*rel
,
4404 struct ppc_link_hash_table
*htab
)
4406 struct ppc_stub_hash_entry
*stub_entry
;
4407 const asection
*id_sec
;
4409 /* If this input section is part of a group of sections sharing one
4410 stub section, then use the id of the first section in the group.
4411 Stub names need to include a section id, as there may well be
4412 more than one stub used to reach say, printf, and we need to
4413 distinguish between them. */
4414 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4416 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4417 && h
->u
.stub_cache
->h
== h
4418 && h
->u
.stub_cache
->id_sec
== id_sec
)
4420 stub_entry
= h
->u
.stub_cache
;
4426 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4427 if (stub_name
== NULL
)
4430 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4431 stub_name
, FALSE
, FALSE
);
4433 h
->u
.stub_cache
= stub_entry
;
4441 /* Add a new stub entry to the stub hash. Not all fields of the new
4442 stub entry are initialised. */
4444 static struct ppc_stub_hash_entry
*
4445 ppc_add_stub (const char *stub_name
,
4447 struct bfd_link_info
*info
)
4449 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4452 struct ppc_stub_hash_entry
*stub_entry
;
4454 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4455 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4456 if (stub_sec
== NULL
)
4458 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4459 if (stub_sec
== NULL
)
4465 namelen
= strlen (link_sec
->name
);
4466 len
= namelen
+ sizeof (STUB_SUFFIX
);
4467 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4471 memcpy (s_name
, link_sec
->name
, namelen
);
4472 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4473 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4474 if (stub_sec
== NULL
)
4476 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4478 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4481 /* Enter this entry into the linker stub hash table. */
4482 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4484 if (stub_entry
== NULL
)
4486 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4487 section
->owner
, stub_name
);
4491 stub_entry
->stub_sec
= stub_sec
;
4492 stub_entry
->stub_offset
= 0;
4493 stub_entry
->id_sec
= link_sec
;
4497 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4498 not already done. */
4501 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4503 asection
*got
, *relgot
;
4505 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4507 if (!is_ppc64_elf (abfd
))
4513 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4516 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4517 | SEC_LINKER_CREATED
);
4519 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4521 || !bfd_set_section_alignment (abfd
, got
, 3))
4524 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4525 flags
| SEC_READONLY
);
4527 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4530 ppc64_elf_tdata (abfd
)->got
= got
;
4531 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4535 /* Create the dynamic sections, and set up shortcuts. */
4538 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4540 struct ppc_link_hash_table
*htab
;
4542 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4545 htab
= ppc_hash_table (info
);
4549 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4551 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4553 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4554 || (!info
->shared
&& !htab
->relbss
))
4560 /* Follow indirect and warning symbol links. */
4562 static inline struct bfd_link_hash_entry
*
4563 follow_link (struct bfd_link_hash_entry
*h
)
4565 while (h
->type
== bfd_link_hash_indirect
4566 || h
->type
== bfd_link_hash_warning
)
4571 static inline struct elf_link_hash_entry
*
4572 elf_follow_link (struct elf_link_hash_entry
*h
)
4574 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4577 static inline struct ppc_link_hash_entry
*
4578 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4580 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4583 /* Merge PLT info on FROM with that on TO. */
4586 move_plt_plist (struct ppc_link_hash_entry
*from
,
4587 struct ppc_link_hash_entry
*to
)
4589 if (from
->elf
.plt
.plist
!= NULL
)
4591 if (to
->elf
.plt
.plist
!= NULL
)
4593 struct plt_entry
**entp
;
4594 struct plt_entry
*ent
;
4596 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4598 struct plt_entry
*dent
;
4600 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4601 if (dent
->addend
== ent
->addend
)
4603 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4610 *entp
= to
->elf
.plt
.plist
;
4613 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4614 from
->elf
.plt
.plist
= NULL
;
4618 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4621 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4622 struct elf_link_hash_entry
*dir
,
4623 struct elf_link_hash_entry
*ind
)
4625 struct ppc_link_hash_entry
*edir
, *eind
;
4627 edir
= (struct ppc_link_hash_entry
*) dir
;
4628 eind
= (struct ppc_link_hash_entry
*) ind
;
4630 edir
->is_func
|= eind
->is_func
;
4631 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4632 edir
->tls_mask
|= eind
->tls_mask
;
4633 if (eind
->oh
!= NULL
)
4634 edir
->oh
= ppc_follow_link (eind
->oh
);
4636 /* If called to transfer flags for a weakdef during processing
4637 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4638 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4639 if (!(ELIMINATE_COPY_RELOCS
4640 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4641 && edir
->elf
.dynamic_adjusted
))
4642 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4644 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4645 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4646 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4647 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4648 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4650 /* Copy over any dynamic relocs we may have on the indirect sym. */
4651 if (eind
->dyn_relocs
!= NULL
)
4653 if (edir
->dyn_relocs
!= NULL
)
4655 struct elf_dyn_relocs
**pp
;
4656 struct elf_dyn_relocs
*p
;
4658 /* Add reloc counts against the indirect sym to the direct sym
4659 list. Merge any entries against the same section. */
4660 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4662 struct elf_dyn_relocs
*q
;
4664 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4665 if (q
->sec
== p
->sec
)
4667 q
->pc_count
+= p
->pc_count
;
4668 q
->count
+= p
->count
;
4675 *pp
= edir
->dyn_relocs
;
4678 edir
->dyn_relocs
= eind
->dyn_relocs
;
4679 eind
->dyn_relocs
= NULL
;
4682 /* If we were called to copy over info for a weak sym, that's all.
4683 You might think dyn_relocs need not be copied over; After all,
4684 both syms will be dynamic or both non-dynamic so we're just
4685 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4686 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4687 dyn_relocs in read-only sections, and it does so on what is the
4689 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4692 /* Copy over got entries that we may have already seen to the
4693 symbol which just became indirect. */
4694 if (eind
->elf
.got
.glist
!= NULL
)
4696 if (edir
->elf
.got
.glist
!= NULL
)
4698 struct got_entry
**entp
;
4699 struct got_entry
*ent
;
4701 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4703 struct got_entry
*dent
;
4705 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4706 if (dent
->addend
== ent
->addend
4707 && dent
->owner
== ent
->owner
4708 && dent
->tls_type
== ent
->tls_type
)
4710 dent
->got
.refcount
+= ent
->got
.refcount
;
4717 *entp
= edir
->elf
.got
.glist
;
4720 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4721 eind
->elf
.got
.glist
= NULL
;
4724 /* And plt entries. */
4725 move_plt_plist (eind
, edir
);
4727 if (eind
->elf
.dynindx
!= -1)
4729 if (edir
->elf
.dynindx
!= -1)
4730 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4731 edir
->elf
.dynstr_index
);
4732 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4733 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4734 eind
->elf
.dynindx
= -1;
4735 eind
->elf
.dynstr_index
= 0;
4739 /* Find the function descriptor hash entry from the given function code
4740 hash entry FH. Link the entries via their OH fields. */
4742 static struct ppc_link_hash_entry
*
4743 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4745 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4749 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4751 fdh
= (struct ppc_link_hash_entry
*)
4752 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4756 fdh
->is_func_descriptor
= 1;
4762 return ppc_follow_link (fdh
);
4765 /* Make a fake function descriptor sym for the code sym FH. */
4767 static struct ppc_link_hash_entry
*
4768 make_fdh (struct bfd_link_info
*info
,
4769 struct ppc_link_hash_entry
*fh
)
4773 struct bfd_link_hash_entry
*bh
;
4774 struct ppc_link_hash_entry
*fdh
;
4776 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4777 newsym
= bfd_make_empty_symbol (abfd
);
4778 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4779 newsym
->section
= bfd_und_section_ptr
;
4781 newsym
->flags
= BSF_WEAK
;
4784 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4785 newsym
->flags
, newsym
->section
,
4786 newsym
->value
, NULL
, FALSE
, FALSE
,
4790 fdh
= (struct ppc_link_hash_entry
*) bh
;
4791 fdh
->elf
.non_elf
= 0;
4793 fdh
->is_func_descriptor
= 1;
4800 /* Fix function descriptor symbols defined in .opd sections to be
4804 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4805 struct bfd_link_info
*info
,
4806 Elf_Internal_Sym
*isym
,
4808 flagword
*flags ATTRIBUTE_UNUSED
,
4812 if ((ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4813 || ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4814 && (ibfd
->flags
& DYNAMIC
) == 0
4815 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
4816 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4819 && strcmp ((*sec
)->name
, ".opd") == 0)
4823 if (!(ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
4824 || ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
))
4825 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4827 /* If the symbol is a function defined in .opd, and the function
4828 code is in a discarded group, let it appear to be undefined. */
4829 if (!info
->relocatable
4830 && (*sec
)->reloc_count
!= 0
4831 && opd_entry_value (*sec
, *value
, &code_sec
, NULL
,
4832 FALSE
) != (bfd_vma
) -1
4833 && discarded_section (code_sec
))
4835 *sec
= bfd_und_section_ptr
;
4836 isym
->st_shndx
= SHN_UNDEF
;
4839 else if (*sec
!= NULL
4840 && strcmp ((*sec
)->name
, ".toc") == 0
4841 && ELF_ST_TYPE (isym
->st_info
) == STT_OBJECT
)
4843 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4845 htab
->params
->object_in_toc
= 1;
4848 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4850 if (abiversion (ibfd
) == 0)
4851 set_abiversion (ibfd
, 2);
4852 else if (abiversion (ibfd
) == 1)
4854 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4855 " for ABI version 1\n"), name
);
4856 bfd_set_error (bfd_error_bad_value
);
4864 /* Merge non-visibility st_other attributes: local entry point. */
4867 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4868 const Elf_Internal_Sym
*isym
,
4869 bfd_boolean definition
,
4870 bfd_boolean dynamic
)
4872 if (definition
&& !dynamic
)
4873 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4874 | ELF_ST_VISIBILITY (h
->other
));
4877 /* This function makes an old ABI object reference to ".bar" cause the
4878 inclusion of a new ABI object archive that defines "bar".
4879 NAME is a symbol defined in an archive. Return a symbol in the hash
4880 table that might be satisfied by the archive symbols. */
4882 static struct elf_link_hash_entry
*
4883 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4884 struct bfd_link_info
*info
,
4887 struct elf_link_hash_entry
*h
;
4891 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4893 /* Don't return this sym if it is a fake function descriptor
4894 created by add_symbol_adjust. */
4895 && !(h
->root
.type
== bfd_link_hash_undefweak
4896 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4902 len
= strlen (name
);
4903 dot_name
= bfd_alloc (abfd
, len
+ 2);
4904 if (dot_name
== NULL
)
4905 return (struct elf_link_hash_entry
*) 0 - 1;
4907 memcpy (dot_name
+ 1, name
, len
+ 1);
4908 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4909 bfd_release (abfd
, dot_name
);
4913 /* This function satisfies all old ABI object references to ".bar" if a
4914 new ABI object defines "bar". Well, at least, undefined dot symbols
4915 are made weak. This stops later archive searches from including an
4916 object if we already have a function descriptor definition. It also
4917 prevents the linker complaining about undefined symbols.
4918 We also check and correct mismatched symbol visibility here. The
4919 most restrictive visibility of the function descriptor and the
4920 function entry symbol is used. */
4923 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4925 struct ppc_link_hash_table
*htab
;
4926 struct ppc_link_hash_entry
*fdh
;
4928 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4931 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4932 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4934 if (eh
->elf
.root
.root
.string
[0] != '.')
4937 htab
= ppc_hash_table (info
);
4941 fdh
= lookup_fdh (eh
, htab
);
4944 if (!info
->relocatable
4945 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4946 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4947 && eh
->elf
.ref_regular
)
4949 /* Make an undefweak function descriptor sym, which is enough to
4950 pull in an --as-needed shared lib, but won't cause link
4951 errors. Archives are handled elsewhere. */
4952 fdh
= make_fdh (info
, eh
);
4955 fdh
->elf
.ref_regular
= 1;
4960 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4961 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4962 if (entry_vis
< descr_vis
)
4963 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4964 else if (entry_vis
> descr_vis
)
4965 eh
->elf
.other
+= descr_vis
- entry_vis
;
4967 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4968 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4969 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4971 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4972 eh
->was_undefined
= 1;
4973 htab
->twiddled_syms
= 1;
4980 /* Set up opd section info and abiversion for IBFD, and process list
4981 of dot-symbols we made in link_hash_newfunc. */
4984 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
4986 struct ppc_link_hash_table
*htab
;
4987 struct ppc_link_hash_entry
**p
, *eh
;
4988 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
4990 if (opd
!= NULL
&& opd
->size
!= 0)
4992 if (abiversion (ibfd
) == 0)
4993 set_abiversion (ibfd
, 1);
4994 else if (abiversion (ibfd
) == 2)
4996 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
4998 ibfd
, abiversion (ibfd
));
4999 bfd_set_error (bfd_error_bad_value
);
5003 if ((ibfd
->flags
& DYNAMIC
) == 0
5004 && (opd
->flags
& SEC_RELOC
) != 0
5005 && opd
->reloc_count
!= 0
5006 && !bfd_is_abs_section (opd
->output_section
))
5008 /* Garbage collection needs some extra help with .opd sections.
5009 We don't want to necessarily keep everything referenced by
5010 relocs in .opd, as that would keep all functions. Instead,
5011 if we reference an .opd symbol (a function descriptor), we
5012 want to keep the function code symbol's section. This is
5013 easy for global symbols, but for local syms we need to keep
5014 information about the associated function section. */
5016 asection
**opd_sym_map
;
5018 amt
= OPD_NDX (opd
->size
) * sizeof (*opd_sym_map
);
5019 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5020 if (opd_sym_map
== NULL
)
5022 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5023 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5024 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5028 if (!is_ppc64_elf (info
->output_bfd
))
5030 htab
= ppc_hash_table (info
);
5034 /* For input files without an explicit abiversion in e_flags
5035 we should have flagged any with symbol st_other bits set
5036 as ELFv1 and above flagged those with .opd as ELFv2.
5037 Set the output abiversion if not yet set, and for any input
5038 still ambiguous, take its abiversion from the output.
5039 Differences in ABI are reported later. */
5040 if (abiversion (info
->output_bfd
) == 0)
5041 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5042 else if (abiversion (ibfd
) == 0)
5043 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5045 p
= &htab
->dot_syms
;
5046 while ((eh
= *p
) != NULL
)
5049 if (&eh
->elf
== htab
->elf
.hgot
)
5051 else if (htab
->elf
.hgot
== NULL
5052 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5053 htab
->elf
.hgot
= &eh
->elf
;
5054 else if (!add_symbol_adjust (eh
, info
))
5056 p
= &eh
->u
.next_dot_sym
;
5059 /* Clear the list for non-ppc64 input files. */
5060 p
= &htab
->dot_syms
;
5061 while ((eh
= *p
) != NULL
)
5064 p
= &eh
->u
.next_dot_sym
;
5067 /* We need to fix the undefs list for any syms we have twiddled to
5069 if (htab
->twiddled_syms
)
5071 bfd_link_repair_undef_list (&htab
->elf
.root
);
5072 htab
->twiddled_syms
= 0;
5077 /* Undo hash table changes when an --as-needed input file is determined
5078 not to be needed. */
5081 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5082 struct bfd_link_info
*info
,
5083 enum notice_asneeded_action act
)
5085 if (act
== notice_not_needed
)
5087 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5092 htab
->dot_syms
= NULL
;
5094 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5097 /* If --just-symbols against a final linked binary, then assume we need
5098 toc adjusting stubs when calling functions defined there. */
5101 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5103 if ((sec
->flags
& SEC_CODE
) != 0
5104 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5105 && is_ppc64_elf (sec
->owner
))
5107 if (abiversion (sec
->owner
) >= 2
5108 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5109 sec
->has_toc_reloc
= 1;
5111 _bfd_elf_link_just_syms (sec
, info
);
5114 static struct plt_entry
**
5115 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5116 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5118 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5119 struct plt_entry
**local_plt
;
5120 unsigned char *local_got_tls_masks
;
5122 if (local_got_ents
== NULL
)
5124 bfd_size_type size
= symtab_hdr
->sh_info
;
5126 size
*= (sizeof (*local_got_ents
)
5127 + sizeof (*local_plt
)
5128 + sizeof (*local_got_tls_masks
));
5129 local_got_ents
= bfd_zalloc (abfd
, size
);
5130 if (local_got_ents
== NULL
)
5132 elf_local_got_ents (abfd
) = local_got_ents
;
5135 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5137 struct got_entry
*ent
;
5139 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5140 if (ent
->addend
== r_addend
5141 && ent
->owner
== abfd
5142 && ent
->tls_type
== tls_type
)
5146 bfd_size_type amt
= sizeof (*ent
);
5147 ent
= bfd_alloc (abfd
, amt
);
5150 ent
->next
= local_got_ents
[r_symndx
];
5151 ent
->addend
= r_addend
;
5153 ent
->tls_type
= tls_type
;
5154 ent
->is_indirect
= FALSE
;
5155 ent
->got
.refcount
= 0;
5156 local_got_ents
[r_symndx
] = ent
;
5158 ent
->got
.refcount
+= 1;
5161 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5162 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5163 local_got_tls_masks
[r_symndx
] |= tls_type
;
5165 return local_plt
+ r_symndx
;
5169 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5171 struct plt_entry
*ent
;
5173 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5174 if (ent
->addend
== addend
)
5178 bfd_size_type amt
= sizeof (*ent
);
5179 ent
= bfd_alloc (abfd
, amt
);
5183 ent
->addend
= addend
;
5184 ent
->plt
.refcount
= 0;
5187 ent
->plt
.refcount
+= 1;
5192 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5194 return (r_type
== R_PPC64_REL24
5195 || r_type
== R_PPC64_REL14
5196 || r_type
== R_PPC64_REL14_BRTAKEN
5197 || r_type
== R_PPC64_REL14_BRNTAKEN
5198 || r_type
== R_PPC64_ADDR24
5199 || r_type
== R_PPC64_ADDR14
5200 || r_type
== R_PPC64_ADDR14_BRTAKEN
5201 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5204 /* Look through the relocs for a section during the first phase, and
5205 calculate needed space in the global offset table, procedure
5206 linkage table, and dynamic reloc sections. */
5209 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5210 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5212 struct ppc_link_hash_table
*htab
;
5213 Elf_Internal_Shdr
*symtab_hdr
;
5214 struct elf_link_hash_entry
**sym_hashes
;
5215 const Elf_Internal_Rela
*rel
;
5216 const Elf_Internal_Rela
*rel_end
;
5218 asection
**opd_sym_map
;
5219 struct elf_link_hash_entry
*tga
, *dottga
;
5221 if (info
->relocatable
)
5224 /* Don't do anything special with non-loaded, non-alloced sections.
5225 In particular, any relocs in such sections should not affect GOT
5226 and PLT reference counting (ie. we don't allow them to create GOT
5227 or PLT entries), there's no possibility or desire to optimize TLS
5228 relocs, and there's not much point in propagating relocs to shared
5229 libs that the dynamic linker won't relocate. */
5230 if ((sec
->flags
& SEC_ALLOC
) == 0)
5233 BFD_ASSERT (is_ppc64_elf (abfd
));
5235 htab
= ppc_hash_table (info
);
5239 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5240 FALSE
, FALSE
, TRUE
);
5241 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5242 FALSE
, FALSE
, TRUE
);
5243 symtab_hdr
= &elf_symtab_hdr (abfd
);
5244 sym_hashes
= elf_sym_hashes (abfd
);
5247 if (ppc64_elf_section_data (sec
) != NULL
5248 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5249 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5251 rel_end
= relocs
+ sec
->reloc_count
;
5252 for (rel
= relocs
; rel
< rel_end
; rel
++)
5254 unsigned long r_symndx
;
5255 struct elf_link_hash_entry
*h
;
5256 enum elf_ppc64_reloc_type r_type
;
5258 struct _ppc64_elf_section_data
*ppc64_sec
;
5259 struct plt_entry
**ifunc
;
5261 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5262 if (r_symndx
< symtab_hdr
->sh_info
)
5266 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5267 h
= elf_follow_link (h
);
5269 /* PR15323, ref flags aren't set for references in the same
5271 h
->root
.non_ir_ref
= 1;
5273 if (h
== htab
->elf
.hgot
)
5274 sec
->has_toc_reloc
= 1;
5281 if (h
->type
== STT_GNU_IFUNC
)
5284 ifunc
= &h
->plt
.plist
;
5289 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5294 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5296 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5297 rel
->r_addend
, PLT_IFUNC
);
5302 r_type
= ELF64_R_TYPE (rel
->r_info
);
5303 if (is_branch_reloc (r_type
))
5305 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5308 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5309 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5310 /* We have a new-style __tls_get_addr call with a marker
5314 /* Mark this section as having an old-style call. */
5315 sec
->has_tls_get_addr_call
= 1;
5318 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5320 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5328 /* These special tls relocs tie a call to __tls_get_addr with
5329 its parameter symbol. */
5332 case R_PPC64_GOT_TLSLD16
:
5333 case R_PPC64_GOT_TLSLD16_LO
:
5334 case R_PPC64_GOT_TLSLD16_HI
:
5335 case R_PPC64_GOT_TLSLD16_HA
:
5336 tls_type
= TLS_TLS
| TLS_LD
;
5339 case R_PPC64_GOT_TLSGD16
:
5340 case R_PPC64_GOT_TLSGD16_LO
:
5341 case R_PPC64_GOT_TLSGD16_HI
:
5342 case R_PPC64_GOT_TLSGD16_HA
:
5343 tls_type
= TLS_TLS
| TLS_GD
;
5346 case R_PPC64_GOT_TPREL16_DS
:
5347 case R_PPC64_GOT_TPREL16_LO_DS
:
5348 case R_PPC64_GOT_TPREL16_HI
:
5349 case R_PPC64_GOT_TPREL16_HA
:
5351 info
->flags
|= DF_STATIC_TLS
;
5352 tls_type
= TLS_TLS
| TLS_TPREL
;
5355 case R_PPC64_GOT_DTPREL16_DS
:
5356 case R_PPC64_GOT_DTPREL16_LO_DS
:
5357 case R_PPC64_GOT_DTPREL16_HI
:
5358 case R_PPC64_GOT_DTPREL16_HA
:
5359 tls_type
= TLS_TLS
| TLS_DTPREL
;
5361 sec
->has_tls_reloc
= 1;
5365 case R_PPC64_GOT16_DS
:
5366 case R_PPC64_GOT16_HA
:
5367 case R_PPC64_GOT16_HI
:
5368 case R_PPC64_GOT16_LO
:
5369 case R_PPC64_GOT16_LO_DS
:
5370 /* This symbol requires a global offset table entry. */
5371 sec
->has_toc_reloc
= 1;
5372 if (r_type
== R_PPC64_GOT_TLSLD16
5373 || r_type
== R_PPC64_GOT_TLSGD16
5374 || r_type
== R_PPC64_GOT_TPREL16_DS
5375 || r_type
== R_PPC64_GOT_DTPREL16_DS
5376 || r_type
== R_PPC64_GOT16
5377 || r_type
== R_PPC64_GOT16_DS
)
5379 htab
->do_multi_toc
= 1;
5380 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5383 if (ppc64_elf_tdata (abfd
)->got
== NULL
5384 && !create_got_section (abfd
, info
))
5389 struct ppc_link_hash_entry
*eh
;
5390 struct got_entry
*ent
;
5392 eh
= (struct ppc_link_hash_entry
*) h
;
5393 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5394 if (ent
->addend
== rel
->r_addend
5395 && ent
->owner
== abfd
5396 && ent
->tls_type
== tls_type
)
5400 bfd_size_type amt
= sizeof (*ent
);
5401 ent
= bfd_alloc (abfd
, amt
);
5404 ent
->next
= eh
->elf
.got
.glist
;
5405 ent
->addend
= rel
->r_addend
;
5407 ent
->tls_type
= tls_type
;
5408 ent
->is_indirect
= FALSE
;
5409 ent
->got
.refcount
= 0;
5410 eh
->elf
.got
.glist
= ent
;
5412 ent
->got
.refcount
+= 1;
5413 eh
->tls_mask
|= tls_type
;
5416 /* This is a global offset table entry for a local symbol. */
5417 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5418 rel
->r_addend
, tls_type
))
5421 /* We may also need a plt entry if the symbol turns out to be
5423 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1)
5425 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5430 case R_PPC64_PLT16_HA
:
5431 case R_PPC64_PLT16_HI
:
5432 case R_PPC64_PLT16_LO
:
5435 /* This symbol requires a procedure linkage table entry. We
5436 actually build the entry in adjust_dynamic_symbol,
5437 because this might be a case of linking PIC code without
5438 linking in any dynamic objects, in which case we don't
5439 need to generate a procedure linkage table after all. */
5442 /* It does not make sense to have a procedure linkage
5443 table entry for a local symbol. */
5444 bfd_set_error (bfd_error_bad_value
);
5449 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5452 if (h
->root
.root
.string
[0] == '.'
5453 && h
->root
.root
.string
[1] != '\0')
5454 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5458 /* The following relocations don't need to propagate the
5459 relocation if linking a shared object since they are
5460 section relative. */
5461 case R_PPC64_SECTOFF
:
5462 case R_PPC64_SECTOFF_LO
:
5463 case R_PPC64_SECTOFF_HI
:
5464 case R_PPC64_SECTOFF_HA
:
5465 case R_PPC64_SECTOFF_DS
:
5466 case R_PPC64_SECTOFF_LO_DS
:
5467 case R_PPC64_DTPREL16
:
5468 case R_PPC64_DTPREL16_LO
:
5469 case R_PPC64_DTPREL16_HI
:
5470 case R_PPC64_DTPREL16_HA
:
5471 case R_PPC64_DTPREL16_DS
:
5472 case R_PPC64_DTPREL16_LO_DS
:
5473 case R_PPC64_DTPREL16_HIGH
:
5474 case R_PPC64_DTPREL16_HIGHA
:
5475 case R_PPC64_DTPREL16_HIGHER
:
5476 case R_PPC64_DTPREL16_HIGHERA
:
5477 case R_PPC64_DTPREL16_HIGHEST
:
5478 case R_PPC64_DTPREL16_HIGHESTA
:
5483 case R_PPC64_REL16_LO
:
5484 case R_PPC64_REL16_HI
:
5485 case R_PPC64_REL16_HA
:
5488 /* Not supported as a dynamic relocation. */
5489 case R_PPC64_ADDR64_LOCAL
:
5492 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5494 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5495 "in shared libraries and PIEs.\n"),
5496 abfd
, sec
, rel
->r_offset
,
5497 ppc64_elf_howto_table
[r_type
]->name
);
5498 bfd_set_error (bfd_error_bad_value
);
5504 case R_PPC64_TOC16_DS
:
5505 htab
->do_multi_toc
= 1;
5506 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5507 case R_PPC64_TOC16_LO
:
5508 case R_PPC64_TOC16_HI
:
5509 case R_PPC64_TOC16_HA
:
5510 case R_PPC64_TOC16_LO_DS
:
5511 sec
->has_toc_reloc
= 1;
5514 /* This relocation describes the C++ object vtable hierarchy.
5515 Reconstruct it for later use during GC. */
5516 case R_PPC64_GNU_VTINHERIT
:
5517 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5521 /* This relocation describes which C++ vtable entries are actually
5522 used. Record for later use during GC. */
5523 case R_PPC64_GNU_VTENTRY
:
5524 BFD_ASSERT (h
!= NULL
);
5526 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5531 case R_PPC64_REL14_BRTAKEN
:
5532 case R_PPC64_REL14_BRNTAKEN
:
5534 asection
*dest
= NULL
;
5536 /* Heuristic: If jumping outside our section, chances are
5537 we are going to need a stub. */
5540 /* If the sym is weak it may be overridden later, so
5541 don't assume we know where a weak sym lives. */
5542 if (h
->root
.type
== bfd_link_hash_defined
)
5543 dest
= h
->root
.u
.def
.section
;
5547 Elf_Internal_Sym
*isym
;
5549 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5554 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5558 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5563 if (h
!= NULL
&& ifunc
== NULL
)
5565 /* We may need a .plt entry if the function this reloc
5566 refers to is in a shared lib. */
5567 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5570 if (h
->root
.root
.string
[0] == '.'
5571 && h
->root
.root
.string
[1] != '\0')
5572 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5573 if (h
== tga
|| h
== dottga
)
5574 sec
->has_tls_reloc
= 1;
5578 case R_PPC64_TPREL64
:
5579 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5581 info
->flags
|= DF_STATIC_TLS
;
5584 case R_PPC64_DTPMOD64
:
5585 if (rel
+ 1 < rel_end
5586 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5587 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5588 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5590 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5593 case R_PPC64_DTPREL64
:
5594 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5596 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5597 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5598 /* This is the second reloc of a dtpmod, dtprel pair.
5599 Don't mark with TLS_DTPREL. */
5603 sec
->has_tls_reloc
= 1;
5606 struct ppc_link_hash_entry
*eh
;
5607 eh
= (struct ppc_link_hash_entry
*) h
;
5608 eh
->tls_mask
|= tls_type
;
5611 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5612 rel
->r_addend
, tls_type
))
5615 ppc64_sec
= ppc64_elf_section_data (sec
);
5616 if (ppc64_sec
->sec_type
!= sec_toc
)
5620 /* One extra to simplify get_tls_mask. */
5621 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5622 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5623 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5625 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5626 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5627 if (ppc64_sec
->u
.toc
.add
== NULL
)
5629 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5630 ppc64_sec
->sec_type
= sec_toc
;
5632 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5633 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5634 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5636 /* Mark the second slot of a GD or LD entry.
5637 -1 to indicate GD and -2 to indicate LD. */
5638 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5639 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5640 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5641 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5644 case R_PPC64_TPREL16
:
5645 case R_PPC64_TPREL16_LO
:
5646 case R_PPC64_TPREL16_HI
:
5647 case R_PPC64_TPREL16_HA
:
5648 case R_PPC64_TPREL16_DS
:
5649 case R_PPC64_TPREL16_LO_DS
:
5650 case R_PPC64_TPREL16_HIGH
:
5651 case R_PPC64_TPREL16_HIGHA
:
5652 case R_PPC64_TPREL16_HIGHER
:
5653 case R_PPC64_TPREL16_HIGHERA
:
5654 case R_PPC64_TPREL16_HIGHEST
:
5655 case R_PPC64_TPREL16_HIGHESTA
:
5658 info
->flags
|= DF_STATIC_TLS
;
5663 case R_PPC64_ADDR64
:
5664 if (opd_sym_map
!= NULL
5665 && rel
+ 1 < rel_end
5666 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5670 if (h
->root
.root
.string
[0] == '.'
5671 && h
->root
.root
.string
[1] != 0
5672 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5675 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5680 Elf_Internal_Sym
*isym
;
5682 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5687 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5688 if (s
!= NULL
&& s
!= sec
)
5689 opd_sym_map
[OPD_NDX (rel
->r_offset
)] = s
;
5694 case R_PPC64_ADDR16
:
5695 case R_PPC64_ADDR16_DS
:
5696 case R_PPC64_ADDR16_HA
:
5697 case R_PPC64_ADDR16_HI
:
5698 case R_PPC64_ADDR16_HIGH
:
5699 case R_PPC64_ADDR16_HIGHA
:
5700 case R_PPC64_ADDR16_HIGHER
:
5701 case R_PPC64_ADDR16_HIGHERA
:
5702 case R_PPC64_ADDR16_HIGHEST
:
5703 case R_PPC64_ADDR16_HIGHESTA
:
5704 case R_PPC64_ADDR16_LO
:
5705 case R_PPC64_ADDR16_LO_DS
:
5706 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1
5707 && rel
->r_addend
== 0)
5709 /* We may need a .plt entry if this reloc refers to a
5710 function in a shared lib. */
5711 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5713 h
->pointer_equality_needed
= 1;
5720 case R_PPC64_ADDR14
:
5721 case R_PPC64_ADDR14_BRNTAKEN
:
5722 case R_PPC64_ADDR14_BRTAKEN
:
5723 case R_PPC64_ADDR24
:
5724 case R_PPC64_ADDR32
:
5725 case R_PPC64_UADDR16
:
5726 case R_PPC64_UADDR32
:
5727 case R_PPC64_UADDR64
:
5729 if (h
!= NULL
&& !info
->shared
)
5730 /* We may need a copy reloc. */
5733 /* Don't propagate .opd relocs. */
5734 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5737 /* If we are creating a shared library, and this is a reloc
5738 against a global symbol, or a non PC relative reloc
5739 against a local symbol, then we need to copy the reloc
5740 into the shared library. However, if we are linking with
5741 -Bsymbolic, we do not need to copy a reloc against a
5742 global symbol which is defined in an object we are
5743 including in the link (i.e., DEF_REGULAR is set). At
5744 this point we have not seen all the input files, so it is
5745 possible that DEF_REGULAR is not set now but will be set
5746 later (it is never cleared). In case of a weak definition,
5747 DEF_REGULAR may be cleared later by a strong definition in
5748 a shared library. We account for that possibility below by
5749 storing information in the dyn_relocs field of the hash
5750 table entry. A similar situation occurs when creating
5751 shared libraries and symbol visibility changes render the
5754 If on the other hand, we are creating an executable, we
5755 may need to keep relocations for symbols satisfied by a
5756 dynamic library if we manage to avoid copy relocs for the
5760 && (must_be_dyn_reloc (info
, r_type
)
5762 && (!SYMBOLIC_BIND (info
, h
)
5763 || h
->root
.type
== bfd_link_hash_defweak
5764 || !h
->def_regular
))))
5765 || (ELIMINATE_COPY_RELOCS
5768 && (h
->root
.type
== bfd_link_hash_defweak
5769 || !h
->def_regular
))
5773 /* We must copy these reloc types into the output file.
5774 Create a reloc section in dynobj and make room for
5778 sreloc
= _bfd_elf_make_dynamic_reloc_section
5779 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5785 /* If this is a global symbol, we count the number of
5786 relocations we need for this symbol. */
5789 struct elf_dyn_relocs
*p
;
5790 struct elf_dyn_relocs
**head
;
5792 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5794 if (p
== NULL
|| p
->sec
!= sec
)
5796 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5806 if (!must_be_dyn_reloc (info
, r_type
))
5811 /* Track dynamic relocs needed for local syms too.
5812 We really need local syms available to do this
5814 struct ppc_dyn_relocs
*p
;
5815 struct ppc_dyn_relocs
**head
;
5816 bfd_boolean is_ifunc
;
5819 Elf_Internal_Sym
*isym
;
5821 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5826 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5830 vpp
= &elf_section_data (s
)->local_dynrel
;
5831 head
= (struct ppc_dyn_relocs
**) vpp
;
5832 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5834 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5836 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5838 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5844 p
->ifunc
= is_ifunc
;
5860 /* Merge backend specific data from an object file to the output
5861 object file when linking. */
5864 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5866 unsigned long iflags
, oflags
;
5868 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5871 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5874 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5877 iflags
= elf_elfheader (ibfd
)->e_flags
;
5878 oflags
= elf_elfheader (obfd
)->e_flags
;
5880 if (iflags
& ~EF_PPC64_ABI
)
5882 (*_bfd_error_handler
)
5883 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5884 bfd_set_error (bfd_error_bad_value
);
5887 else if (iflags
!= oflags
&& iflags
!= 0)
5889 (*_bfd_error_handler
)
5890 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5891 ibfd
, iflags
, oflags
);
5892 bfd_set_error (bfd_error_bad_value
);
5896 /* Merge Tag_compatibility attributes and any common GNU ones. */
5897 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5903 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5905 /* Print normal ELF private data. */
5906 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5908 if (elf_elfheader (abfd
)->e_flags
!= 0)
5912 /* xgettext:c-format */
5913 fprintf (file
, _("private flags = 0x%lx:"),
5914 elf_elfheader (abfd
)->e_flags
);
5916 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
5917 fprintf (file
, _(" [abiv%ld]"),
5918 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
5925 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5926 of the code entry point, and its section, which must be in the same
5927 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5930 opd_entry_value (asection
*opd_sec
,
5932 asection
**code_sec
,
5934 bfd_boolean in_code_sec
)
5936 bfd
*opd_bfd
= opd_sec
->owner
;
5937 Elf_Internal_Rela
*relocs
;
5938 Elf_Internal_Rela
*lo
, *hi
, *look
;
5941 /* No relocs implies we are linking a --just-symbols object, or looking
5942 at a final linked executable with addr2line or somesuch. */
5943 if (opd_sec
->reloc_count
== 0)
5945 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
5947 if (contents
== NULL
)
5949 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
5950 return (bfd_vma
) -1;
5951 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
5954 /* PR 17512: file: 64b9dfbb. */
5955 if (offset
+ 7 >= opd_sec
->size
|| offset
+ 7 < offset
)
5956 return (bfd_vma
) -1;
5958 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
5959 if (code_sec
!= NULL
)
5961 asection
*sec
, *likely
= NULL
;
5967 && val
< sec
->vma
+ sec
->size
)
5973 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5975 && (sec
->flags
& SEC_LOAD
) != 0
5976 && (sec
->flags
& SEC_ALLOC
) != 0)
5981 if (code_off
!= NULL
)
5982 *code_off
= val
- likely
->vma
;
5988 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5990 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
5992 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5993 /* PR 17512: file: df8e1fd6. */
5995 return (bfd_vma
) -1;
5997 /* Go find the opd reloc at the sym address. */
5999 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
6003 look
= lo
+ (hi
- lo
) / 2;
6004 if (look
->r_offset
< offset
)
6006 else if (look
->r_offset
> offset
)
6010 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
6012 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
6013 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
6015 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
6016 asection
*sec
= NULL
;
6018 if (symndx
>= symtab_hdr
->sh_info
6019 && elf_sym_hashes (opd_bfd
) != NULL
)
6021 struct elf_link_hash_entry
**sym_hashes
;
6022 struct elf_link_hash_entry
*rh
;
6024 sym_hashes
= elf_sym_hashes (opd_bfd
);
6025 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6028 rh
= elf_follow_link (rh
);
6029 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
6030 || rh
->root
.type
== bfd_link_hash_defweak
);
6031 val
= rh
->root
.u
.def
.value
;
6032 sec
= rh
->root
.u
.def
.section
;
6033 if (sec
->owner
!= opd_bfd
)
6043 Elf_Internal_Sym
*sym
;
6045 if (symndx
< symtab_hdr
->sh_info
)
6047 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6050 size_t symcnt
= symtab_hdr
->sh_info
;
6051 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6056 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6062 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
6068 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6071 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6072 val
= sym
->st_value
;
6075 val
+= look
->r_addend
;
6076 if (code_off
!= NULL
)
6078 if (code_sec
!= NULL
)
6080 if (in_code_sec
&& *code_sec
!= sec
)
6085 if (sec
->output_section
!= NULL
)
6086 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6095 /* If the ELF symbol SYM might be a function in SEC, return the
6096 function size and set *CODE_OFF to the function's entry point,
6097 otherwise return zero. */
6099 static bfd_size_type
6100 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6105 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6106 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6110 if (!(sym
->flags
& BSF_SYNTHETIC
))
6111 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6113 if (strcmp (sym
->section
->name
, ".opd") == 0)
6115 if (opd_entry_value (sym
->section
, sym
->value
,
6116 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6118 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6119 symbol. This size has nothing to do with the code size of the
6120 function, which is what we're supposed to return, but the
6121 code size isn't available without looking up the dot-sym.
6122 However, doing that would be a waste of time particularly
6123 since elf_find_function will look at the dot-sym anyway.
6124 Now, elf_find_function will keep the largest size of any
6125 function sym found at the code address of interest, so return
6126 1 here to avoid it incorrectly caching a larger function size
6127 for a small function. This does mean we return the wrong
6128 size for a new-ABI function of size 24, but all that does is
6129 disable caching for such functions. */
6135 if (sym
->section
!= sec
)
6137 *code_off
= sym
->value
;
6144 /* Return true if symbol is defined in a regular object file. */
6147 is_static_defined (struct elf_link_hash_entry
*h
)
6149 return ((h
->root
.type
== bfd_link_hash_defined
6150 || h
->root
.type
== bfd_link_hash_defweak
)
6151 && h
->root
.u
.def
.section
!= NULL
6152 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6155 /* If FDH is a function descriptor symbol, return the associated code
6156 entry symbol if it is defined. Return NULL otherwise. */
6158 static struct ppc_link_hash_entry
*
6159 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6161 if (fdh
->is_func_descriptor
)
6163 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6164 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6165 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6171 /* If FH is a function code entry symbol, return the associated
6172 function descriptor symbol if it is defined. Return NULL otherwise. */
6174 static struct ppc_link_hash_entry
*
6175 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6178 && fh
->oh
->is_func_descriptor
)
6180 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6181 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6182 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6188 /* Mark all our entry sym sections, both opd and code section. */
6191 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6193 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6194 struct bfd_sym_chain
*sym
;
6199 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6201 struct ppc_link_hash_entry
*eh
, *fh
;
6204 eh
= (struct ppc_link_hash_entry
*)
6205 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6208 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6209 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6212 fh
= defined_code_entry (eh
);
6215 sec
= fh
->elf
.root
.u
.def
.section
;
6216 sec
->flags
|= SEC_KEEP
;
6218 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6219 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6220 eh
->elf
.root
.u
.def
.value
,
6221 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6222 sec
->flags
|= SEC_KEEP
;
6224 sec
= eh
->elf
.root
.u
.def
.section
;
6225 sec
->flags
|= SEC_KEEP
;
6229 /* Mark sections containing dynamically referenced symbols. When
6230 building shared libraries, we must assume that any visible symbol is
6234 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6236 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6237 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6238 struct ppc_link_hash_entry
*fdh
;
6239 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6241 /* Dynamic linking info is on the func descriptor sym. */
6242 fdh
= defined_func_desc (eh
);
6246 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6247 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6248 && (eh
->elf
.ref_dynamic
6249 || ((eh
->elf
.def_regular
|| ELF_COMMON_DEF_P (&eh
->elf
))
6250 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6251 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6252 && (!info
->executable
6253 || info
->export_dynamic
6256 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6257 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6258 || !bfd_hide_sym_by_version (info
->version_info
,
6259 eh
->elf
.root
.root
.string
)))))
6262 struct ppc_link_hash_entry
*fh
;
6264 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6266 /* Function descriptor syms cause the associated
6267 function code sym section to be marked. */
6268 fh
= defined_code_entry (eh
);
6271 code_sec
= fh
->elf
.root
.u
.def
.section
;
6272 code_sec
->flags
|= SEC_KEEP
;
6274 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6275 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6276 eh
->elf
.root
.u
.def
.value
,
6277 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6278 code_sec
->flags
|= SEC_KEEP
;
6284 /* Return the section that should be marked against GC for a given
6288 ppc64_elf_gc_mark_hook (asection
*sec
,
6289 struct bfd_link_info
*info
,
6290 Elf_Internal_Rela
*rel
,
6291 struct elf_link_hash_entry
*h
,
6292 Elf_Internal_Sym
*sym
)
6296 /* Syms return NULL if we're marking .opd, so we avoid marking all
6297 function sections, as all functions are referenced in .opd. */
6299 if (get_opd_info (sec
) != NULL
)
6304 enum elf_ppc64_reloc_type r_type
;
6305 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6307 r_type
= ELF64_R_TYPE (rel
->r_info
);
6310 case R_PPC64_GNU_VTINHERIT
:
6311 case R_PPC64_GNU_VTENTRY
:
6315 switch (h
->root
.type
)
6317 case bfd_link_hash_defined
:
6318 case bfd_link_hash_defweak
:
6319 eh
= (struct ppc_link_hash_entry
*) h
;
6320 fdh
= defined_func_desc (eh
);
6324 /* Function descriptor syms cause the associated
6325 function code sym section to be marked. */
6326 fh
= defined_code_entry (eh
);
6329 /* They also mark their opd section. */
6330 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6332 rsec
= fh
->elf
.root
.u
.def
.section
;
6334 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6335 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6336 eh
->elf
.root
.u
.def
.value
,
6337 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6338 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6340 rsec
= h
->root
.u
.def
.section
;
6343 case bfd_link_hash_common
:
6344 rsec
= h
->root
.u
.c
.p
->section
;
6348 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6354 struct _opd_sec_data
*opd
;
6356 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6357 opd
= get_opd_info (rsec
);
6358 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6362 rsec
= opd
->func_sec
[OPD_NDX (sym
->st_value
+ rel
->r_addend
)];
6369 /* Update the .got, .plt. and dynamic reloc reference counts for the
6370 section being removed. */
6373 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6374 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6376 struct ppc_link_hash_table
*htab
;
6377 Elf_Internal_Shdr
*symtab_hdr
;
6378 struct elf_link_hash_entry
**sym_hashes
;
6379 struct got_entry
**local_got_ents
;
6380 const Elf_Internal_Rela
*rel
, *relend
;
6382 if (info
->relocatable
)
6385 if ((sec
->flags
& SEC_ALLOC
) == 0)
6388 elf_section_data (sec
)->local_dynrel
= NULL
;
6390 htab
= ppc_hash_table (info
);
6394 symtab_hdr
= &elf_symtab_hdr (abfd
);
6395 sym_hashes
= elf_sym_hashes (abfd
);
6396 local_got_ents
= elf_local_got_ents (abfd
);
6398 relend
= relocs
+ sec
->reloc_count
;
6399 for (rel
= relocs
; rel
< relend
; rel
++)
6401 unsigned long r_symndx
;
6402 enum elf_ppc64_reloc_type r_type
;
6403 struct elf_link_hash_entry
*h
= NULL
;
6404 unsigned char tls_type
= 0;
6406 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6407 r_type
= ELF64_R_TYPE (rel
->r_info
);
6408 if (r_symndx
>= symtab_hdr
->sh_info
)
6410 struct ppc_link_hash_entry
*eh
;
6411 struct elf_dyn_relocs
**pp
;
6412 struct elf_dyn_relocs
*p
;
6414 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6415 h
= elf_follow_link (h
);
6416 eh
= (struct ppc_link_hash_entry
*) h
;
6418 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6421 /* Everything must go for SEC. */
6427 if (is_branch_reloc (r_type
))
6429 struct plt_entry
**ifunc
= NULL
;
6432 if (h
->type
== STT_GNU_IFUNC
)
6433 ifunc
= &h
->plt
.plist
;
6435 else if (local_got_ents
!= NULL
)
6437 struct plt_entry
**local_plt
= (struct plt_entry
**)
6438 (local_got_ents
+ symtab_hdr
->sh_info
);
6439 unsigned char *local_got_tls_masks
= (unsigned char *)
6440 (local_plt
+ symtab_hdr
->sh_info
);
6441 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6442 ifunc
= local_plt
+ r_symndx
;
6446 struct plt_entry
*ent
;
6448 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6449 if (ent
->addend
== rel
->r_addend
)
6453 if (ent
->plt
.refcount
> 0)
6454 ent
->plt
.refcount
-= 1;
6461 case R_PPC64_GOT_TLSLD16
:
6462 case R_PPC64_GOT_TLSLD16_LO
:
6463 case R_PPC64_GOT_TLSLD16_HI
:
6464 case R_PPC64_GOT_TLSLD16_HA
:
6465 tls_type
= TLS_TLS
| TLS_LD
;
6468 case R_PPC64_GOT_TLSGD16
:
6469 case R_PPC64_GOT_TLSGD16_LO
:
6470 case R_PPC64_GOT_TLSGD16_HI
:
6471 case R_PPC64_GOT_TLSGD16_HA
:
6472 tls_type
= TLS_TLS
| TLS_GD
;
6475 case R_PPC64_GOT_TPREL16_DS
:
6476 case R_PPC64_GOT_TPREL16_LO_DS
:
6477 case R_PPC64_GOT_TPREL16_HI
:
6478 case R_PPC64_GOT_TPREL16_HA
:
6479 tls_type
= TLS_TLS
| TLS_TPREL
;
6482 case R_PPC64_GOT_DTPREL16_DS
:
6483 case R_PPC64_GOT_DTPREL16_LO_DS
:
6484 case R_PPC64_GOT_DTPREL16_HI
:
6485 case R_PPC64_GOT_DTPREL16_HA
:
6486 tls_type
= TLS_TLS
| TLS_DTPREL
;
6490 case R_PPC64_GOT16_DS
:
6491 case R_PPC64_GOT16_HA
:
6492 case R_PPC64_GOT16_HI
:
6493 case R_PPC64_GOT16_LO
:
6494 case R_PPC64_GOT16_LO_DS
:
6497 struct got_entry
*ent
;
6502 ent
= local_got_ents
[r_symndx
];
6504 for (; ent
!= NULL
; ent
= ent
->next
)
6505 if (ent
->addend
== rel
->r_addend
6506 && ent
->owner
== abfd
6507 && ent
->tls_type
== tls_type
)
6511 if (ent
->got
.refcount
> 0)
6512 ent
->got
.refcount
-= 1;
6516 case R_PPC64_PLT16_HA
:
6517 case R_PPC64_PLT16_HI
:
6518 case R_PPC64_PLT16_LO
:
6522 case R_PPC64_REL14_BRNTAKEN
:
6523 case R_PPC64_REL14_BRTAKEN
:
6527 struct plt_entry
*ent
;
6529 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6530 if (ent
->addend
== rel
->r_addend
)
6532 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6533 ent
->plt
.refcount
-= 1;
6544 /* The maximum size of .sfpr. */
6545 #define SFPR_MAX (218*4)
6547 struct sfpr_def_parms
6549 const char name
[12];
6550 unsigned char lo
, hi
;
6551 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6552 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6555 /* Auto-generate _save*, _rest* functions in .sfpr. */
6558 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6560 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6562 size_t len
= strlen (parm
->name
);
6563 bfd_boolean writing
= FALSE
;
6569 memcpy (sym
, parm
->name
, len
);
6572 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6574 struct elf_link_hash_entry
*h
;
6576 sym
[len
+ 0] = i
/ 10 + '0';
6577 sym
[len
+ 1] = i
% 10 + '0';
6578 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6582 h
->root
.type
= bfd_link_hash_defined
;
6583 h
->root
.u
.def
.section
= htab
->sfpr
;
6584 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6587 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6589 if (htab
->sfpr
->contents
== NULL
)
6591 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6592 if (htab
->sfpr
->contents
== NULL
)
6598 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6600 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6602 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6603 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6611 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6613 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6618 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6620 p
= savegpr0 (abfd
, p
, r
);
6621 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6623 bfd_put_32 (abfd
, BLR
, p
);
6628 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6630 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6635 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6637 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6639 p
= restgpr0 (abfd
, p
, r
);
6640 bfd_put_32 (abfd
, MTLR_R0
, p
);
6644 p
= restgpr0 (abfd
, p
, 30);
6645 p
= restgpr0 (abfd
, p
, 31);
6647 bfd_put_32 (abfd
, BLR
, p
);
6652 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6654 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6659 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6661 p
= savegpr1 (abfd
, p
, r
);
6662 bfd_put_32 (abfd
, BLR
, p
);
6667 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6669 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6674 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6676 p
= restgpr1 (abfd
, p
, r
);
6677 bfd_put_32 (abfd
, BLR
, p
);
6682 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6684 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6689 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6691 p
= savefpr (abfd
, p
, r
);
6692 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6694 bfd_put_32 (abfd
, BLR
, p
);
6699 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6701 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6706 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6708 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6710 p
= restfpr (abfd
, p
, r
);
6711 bfd_put_32 (abfd
, MTLR_R0
, p
);
6715 p
= restfpr (abfd
, p
, 30);
6716 p
= restfpr (abfd
, p
, 31);
6718 bfd_put_32 (abfd
, BLR
, p
);
6723 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6725 p
= savefpr (abfd
, p
, r
);
6726 bfd_put_32 (abfd
, BLR
, p
);
6731 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6733 p
= restfpr (abfd
, p
, r
);
6734 bfd_put_32 (abfd
, BLR
, p
);
6739 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6741 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6743 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6748 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6750 p
= savevr (abfd
, p
, r
);
6751 bfd_put_32 (abfd
, BLR
, p
);
6756 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6758 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6760 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6765 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6767 p
= restvr (abfd
, p
, r
);
6768 bfd_put_32 (abfd
, BLR
, p
);
6772 /* Called via elf_link_hash_traverse to transfer dynamic linking
6773 information on function code symbol entries to their corresponding
6774 function descriptor symbol entries. */
6777 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6779 struct bfd_link_info
*info
;
6780 struct ppc_link_hash_table
*htab
;
6781 struct plt_entry
*ent
;
6782 struct ppc_link_hash_entry
*fh
;
6783 struct ppc_link_hash_entry
*fdh
;
6784 bfd_boolean force_local
;
6786 fh
= (struct ppc_link_hash_entry
*) h
;
6787 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6791 htab
= ppc_hash_table (info
);
6795 /* Resolve undefined references to dot-symbols as the value
6796 in the function descriptor, if we have one in a regular object.
6797 This is to satisfy cases like ".quad .foo". Calls to functions
6798 in dynamic objects are handled elsewhere. */
6799 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6800 && fh
->was_undefined
6801 && (fdh
= defined_func_desc (fh
)) != NULL
6802 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6803 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6804 fdh
->elf
.root
.u
.def
.value
,
6805 &fh
->elf
.root
.u
.def
.section
,
6806 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6808 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6809 fh
->elf
.forced_local
= 1;
6810 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6811 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6814 /* If this is a function code symbol, transfer dynamic linking
6815 information to the function descriptor symbol. */
6819 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6820 if (ent
->plt
.refcount
> 0)
6823 || fh
->elf
.root
.root
.string
[0] != '.'
6824 || fh
->elf
.root
.root
.string
[1] == '\0')
6827 /* Find the corresponding function descriptor symbol. Create it
6828 as undefined if necessary. */
6830 fdh
= lookup_fdh (fh
, htab
);
6832 && !info
->executable
6833 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6834 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6836 fdh
= make_fdh (info
, fh
);
6841 /* Fake function descriptors are made undefweak. If the function
6842 code symbol is strong undefined, make the fake sym the same.
6843 If the function code symbol is defined, then force the fake
6844 descriptor local; We can't support overriding of symbols in a
6845 shared library on a fake descriptor. */
6849 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6851 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6853 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6854 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6856 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6857 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6859 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6864 && !fdh
->elf
.forced_local
6865 && (!info
->executable
6866 || fdh
->elf
.def_dynamic
6867 || fdh
->elf
.ref_dynamic
6868 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6869 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6871 if (fdh
->elf
.dynindx
== -1)
6872 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6874 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6875 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6876 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6877 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6878 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6880 move_plt_plist (fh
, fdh
);
6881 fdh
->elf
.needs_plt
= 1;
6883 fdh
->is_func_descriptor
= 1;
6888 /* Now that the info is on the function descriptor, clear the
6889 function code sym info. Any function code syms for which we
6890 don't have a definition in a regular file, we force local.
6891 This prevents a shared library from exporting syms that have
6892 been imported from another library. Function code syms that
6893 are really in the library we must leave global to prevent the
6894 linker dragging in a definition from a static library. */
6895 force_local
= (!fh
->elf
.def_regular
6897 || !fdh
->elf
.def_regular
6898 || fdh
->elf
.forced_local
);
6899 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6904 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6905 this hook to a) provide some gcc support functions, and b) transfer
6906 dynamic linking information gathered so far on function code symbol
6907 entries, to their corresponding function descriptor symbol entries. */
6910 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6911 struct bfd_link_info
*info
)
6913 struct ppc_link_hash_table
*htab
;
6915 static const struct sfpr_def_parms funcs
[] =
6917 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6918 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6919 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6920 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6921 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6922 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6923 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6924 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6925 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6926 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6927 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6928 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6931 htab
= ppc_hash_table (info
);
6935 if (!info
->relocatable
6936 && htab
->elf
.hgot
!= NULL
)
6938 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6939 /* Make .TOC. defined so as to prevent it being made dynamic.
6940 The wrong value here is fixed later in ppc64_elf_set_toc. */
6941 htab
->elf
.hgot
->type
= STT_OBJECT
;
6942 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
6943 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
6944 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
6945 htab
->elf
.hgot
->def_regular
= 1;
6946 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
6950 if (htab
->sfpr
== NULL
)
6951 /* We don't have any relocs. */
6954 /* Provide any missing _save* and _rest* functions. */
6955 htab
->sfpr
->size
= 0;
6956 if (htab
->params
->save_restore_funcs
)
6957 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6958 if (!sfpr_define (info
, &funcs
[i
]))
6961 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6963 if (htab
->sfpr
->size
== 0)
6964 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6969 /* Return true if we have dynamic relocs that apply to read-only sections. */
6972 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
6974 struct ppc_link_hash_entry
*eh
;
6975 struct elf_dyn_relocs
*p
;
6977 eh
= (struct ppc_link_hash_entry
*) h
;
6978 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6980 asection
*s
= p
->sec
->output_section
;
6982 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6988 /* Adjust a symbol defined by a dynamic object and referenced by a
6989 regular object. The current definition is in some section of the
6990 dynamic object, but we're not including those sections. We have to
6991 change the definition to something the rest of the link can
6995 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6996 struct elf_link_hash_entry
*h
)
6998 struct ppc_link_hash_table
*htab
;
7001 htab
= ppc_hash_table (info
);
7005 /* Deal with function syms. */
7006 if (h
->type
== STT_FUNC
7007 || h
->type
== STT_GNU_IFUNC
7010 /* Clear procedure linkage table information for any symbol that
7011 won't need a .plt entry. */
7012 struct plt_entry
*ent
;
7013 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7014 if (ent
->plt
.refcount
> 0)
7017 || (h
->type
!= STT_GNU_IFUNC
7018 && (SYMBOL_CALLS_LOCAL (info
, h
)
7019 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7020 && h
->root
.type
== bfd_link_hash_undefweak
))))
7022 h
->plt
.plist
= NULL
;
7024 h
->pointer_equality_needed
= 0;
7026 else if (abiversion (info
->output_bfd
) == 2)
7028 /* Taking a function's address in a read/write section
7029 doesn't require us to define the function symbol in the
7030 executable on a global entry stub. A dynamic reloc can
7032 if (h
->pointer_equality_needed
7033 && h
->type
!= STT_GNU_IFUNC
7034 && !readonly_dynrelocs (h
))
7036 h
->pointer_equality_needed
= 0;
7040 /* After adjust_dynamic_symbol, non_got_ref set in the
7041 non-shared case means that we have allocated space in
7042 .dynbss for the symbol and thus dyn_relocs for this
7043 symbol should be discarded.
7044 If we get here we know we are making a PLT entry for this
7045 symbol, and in an executable we'd normally resolve
7046 relocations against this symbol to the PLT entry. Allow
7047 dynamic relocs if the reference is weak, and the dynamic
7048 relocs will not cause text relocation. */
7049 else if (!h
->ref_regular_nonweak
7051 && h
->type
!= STT_GNU_IFUNC
7052 && !readonly_dynrelocs (h
))
7055 /* If making a plt entry, then we don't need copy relocs. */
7060 h
->plt
.plist
= NULL
;
7062 /* If this is a weak symbol, and there is a real definition, the
7063 processor independent code will have arranged for us to see the
7064 real definition first, and we can just use the same value. */
7065 if (h
->u
.weakdef
!= NULL
)
7067 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7068 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7069 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7070 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7071 if (ELIMINATE_COPY_RELOCS
)
7072 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7076 /* If we are creating a shared library, we must presume that the
7077 only references to the symbol are via the global offset table.
7078 For such cases we need not do anything here; the relocations will
7079 be handled correctly by relocate_section. */
7083 /* If there are no references to this symbol that do not use the
7084 GOT, we don't need to generate a copy reloc. */
7085 if (!h
->non_got_ref
)
7088 /* Don't generate a copy reloc for symbols defined in the executable. */
7089 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7092 /* If -z nocopyreloc was given, don't generate them either. */
7093 if (info
->nocopyreloc
)
7099 /* If we didn't find any dynamic relocs in read-only sections, then
7100 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7101 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7107 /* Protected variables do not work with .dynbss. The copy in
7108 .dynbss won't be used by the shared library with the protected
7109 definition for the variable. Text relocations are preferable
7110 to an incorrect program. */
7111 if (h
->protected_def
)
7117 if (h
->plt
.plist
!= NULL
)
7119 /* We should never get here, but unfortunately there are versions
7120 of gcc out there that improperly (for this ABI) put initialized
7121 function pointers, vtable refs and suchlike in read-only
7122 sections. Allow them to proceed, but warn that this might
7123 break at runtime. */
7124 info
->callbacks
->einfo
7125 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7126 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7127 h
->root
.root
.string
);
7130 /* This is a reference to a symbol defined by a dynamic object which
7131 is not a function. */
7133 /* We must allocate the symbol in our .dynbss section, which will
7134 become part of the .bss section of the executable. There will be
7135 an entry for this symbol in the .dynsym section. The dynamic
7136 object will contain position independent code, so all references
7137 from the dynamic object to this symbol will go through the global
7138 offset table. The dynamic linker will use the .dynsym entry to
7139 determine the address it must put in the global offset table, so
7140 both the dynamic object and the regular object will refer to the
7141 same memory location for the variable. */
7143 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7144 to copy the initial value out of the dynamic object and into the
7145 runtime process image. We need to remember the offset into the
7146 .rela.bss section we are going to use. */
7147 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7149 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7155 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7158 /* If given a function descriptor symbol, hide both the function code
7159 sym and the descriptor. */
7161 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7162 struct elf_link_hash_entry
*h
,
7163 bfd_boolean force_local
)
7165 struct ppc_link_hash_entry
*eh
;
7166 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7168 eh
= (struct ppc_link_hash_entry
*) h
;
7169 if (eh
->is_func_descriptor
)
7171 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7176 struct ppc_link_hash_table
*htab
;
7179 /* We aren't supposed to use alloca in BFD because on
7180 systems which do not have alloca the version in libiberty
7181 calls xmalloc, which might cause the program to crash
7182 when it runs out of memory. This function doesn't have a
7183 return status, so there's no way to gracefully return an
7184 error. So cheat. We know that string[-1] can be safely
7185 accessed; It's either a string in an ELF string table,
7186 or allocated in an objalloc structure. */
7188 p
= eh
->elf
.root
.root
.string
- 1;
7191 htab
= ppc_hash_table (info
);
7195 fh
= (struct ppc_link_hash_entry
*)
7196 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7199 /* Unfortunately, if it so happens that the string we were
7200 looking for was allocated immediately before this string,
7201 then we overwrote the string terminator. That's the only
7202 reason the lookup should fail. */
7205 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7206 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7208 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7209 fh
= (struct ppc_link_hash_entry
*)
7210 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7219 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7224 get_sym_h (struct elf_link_hash_entry
**hp
,
7225 Elf_Internal_Sym
**symp
,
7227 unsigned char **tls_maskp
,
7228 Elf_Internal_Sym
**locsymsp
,
7229 unsigned long r_symndx
,
7232 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7234 if (r_symndx
>= symtab_hdr
->sh_info
)
7236 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7237 struct elf_link_hash_entry
*h
;
7239 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7240 h
= elf_follow_link (h
);
7248 if (symsecp
!= NULL
)
7250 asection
*symsec
= NULL
;
7251 if (h
->root
.type
== bfd_link_hash_defined
7252 || h
->root
.type
== bfd_link_hash_defweak
)
7253 symsec
= h
->root
.u
.def
.section
;
7257 if (tls_maskp
!= NULL
)
7259 struct ppc_link_hash_entry
*eh
;
7261 eh
= (struct ppc_link_hash_entry
*) h
;
7262 *tls_maskp
= &eh
->tls_mask
;
7267 Elf_Internal_Sym
*sym
;
7268 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7270 if (locsyms
== NULL
)
7272 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7273 if (locsyms
== NULL
)
7274 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7275 symtab_hdr
->sh_info
,
7276 0, NULL
, NULL
, NULL
);
7277 if (locsyms
== NULL
)
7279 *locsymsp
= locsyms
;
7281 sym
= locsyms
+ r_symndx
;
7289 if (symsecp
!= NULL
)
7290 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7292 if (tls_maskp
!= NULL
)
7294 struct got_entry
**lgot_ents
;
7295 unsigned char *tls_mask
;
7298 lgot_ents
= elf_local_got_ents (ibfd
);
7299 if (lgot_ents
!= NULL
)
7301 struct plt_entry
**local_plt
= (struct plt_entry
**)
7302 (lgot_ents
+ symtab_hdr
->sh_info
);
7303 unsigned char *lgot_masks
= (unsigned char *)
7304 (local_plt
+ symtab_hdr
->sh_info
);
7305 tls_mask
= &lgot_masks
[r_symndx
];
7307 *tls_maskp
= tls_mask
;
7313 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7314 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7315 type suitable for optimization, and 1 otherwise. */
7318 get_tls_mask (unsigned char **tls_maskp
,
7319 unsigned long *toc_symndx
,
7320 bfd_vma
*toc_addend
,
7321 Elf_Internal_Sym
**locsymsp
,
7322 const Elf_Internal_Rela
*rel
,
7325 unsigned long r_symndx
;
7327 struct elf_link_hash_entry
*h
;
7328 Elf_Internal_Sym
*sym
;
7332 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7333 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7336 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7338 || ppc64_elf_section_data (sec
) == NULL
7339 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7342 /* Look inside a TOC section too. */
7345 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7346 off
= h
->root
.u
.def
.value
;
7349 off
= sym
->st_value
;
7350 off
+= rel
->r_addend
;
7351 BFD_ASSERT (off
% 8 == 0);
7352 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7353 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7354 if (toc_symndx
!= NULL
)
7355 *toc_symndx
= r_symndx
;
7356 if (toc_addend
!= NULL
)
7357 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7358 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7360 if ((h
== NULL
|| is_static_defined (h
))
7361 && (next_r
== -1 || next_r
== -2))
7366 /* Find (or create) an entry in the tocsave hash table. */
7368 static struct tocsave_entry
*
7369 tocsave_find (struct ppc_link_hash_table
*htab
,
7370 enum insert_option insert
,
7371 Elf_Internal_Sym
**local_syms
,
7372 const Elf_Internal_Rela
*irela
,
7375 unsigned long r_indx
;
7376 struct elf_link_hash_entry
*h
;
7377 Elf_Internal_Sym
*sym
;
7378 struct tocsave_entry ent
, *p
;
7380 struct tocsave_entry
**slot
;
7382 r_indx
= ELF64_R_SYM (irela
->r_info
);
7383 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7385 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7387 (*_bfd_error_handler
)
7388 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7393 ent
.offset
= h
->root
.u
.def
.value
;
7395 ent
.offset
= sym
->st_value
;
7396 ent
.offset
+= irela
->r_addend
;
7398 hash
= tocsave_htab_hash (&ent
);
7399 slot
= ((struct tocsave_entry
**)
7400 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7406 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7415 /* Adjust all global syms defined in opd sections. In gcc generated
7416 code for the old ABI, these will already have been done. */
7419 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7421 struct ppc_link_hash_entry
*eh
;
7423 struct _opd_sec_data
*opd
;
7425 if (h
->root
.type
== bfd_link_hash_indirect
)
7428 if (h
->root
.type
!= bfd_link_hash_defined
7429 && h
->root
.type
!= bfd_link_hash_defweak
)
7432 eh
= (struct ppc_link_hash_entry
*) h
;
7433 if (eh
->adjust_done
)
7436 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7437 opd
= get_opd_info (sym_sec
);
7438 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7440 long adjust
= opd
->adjust
[OPD_NDX (eh
->elf
.root
.u
.def
.value
)];
7443 /* This entry has been deleted. */
7444 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7447 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7448 if (discarded_section (dsec
))
7450 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7454 eh
->elf
.root
.u
.def
.value
= 0;
7455 eh
->elf
.root
.u
.def
.section
= dsec
;
7458 eh
->elf
.root
.u
.def
.value
+= adjust
;
7459 eh
->adjust_done
= 1;
7464 /* Handles decrementing dynamic reloc counts for the reloc specified by
7465 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7466 have already been determined. */
7469 dec_dynrel_count (bfd_vma r_info
,
7471 struct bfd_link_info
*info
,
7472 Elf_Internal_Sym
**local_syms
,
7473 struct elf_link_hash_entry
*h
,
7474 Elf_Internal_Sym
*sym
)
7476 enum elf_ppc64_reloc_type r_type
;
7477 asection
*sym_sec
= NULL
;
7479 /* Can this reloc be dynamic? This switch, and later tests here
7480 should be kept in sync with the code in check_relocs. */
7481 r_type
= ELF64_R_TYPE (r_info
);
7487 case R_PPC64_TPREL16
:
7488 case R_PPC64_TPREL16_LO
:
7489 case R_PPC64_TPREL16_HI
:
7490 case R_PPC64_TPREL16_HA
:
7491 case R_PPC64_TPREL16_DS
:
7492 case R_PPC64_TPREL16_LO_DS
:
7493 case R_PPC64_TPREL16_HIGH
:
7494 case R_PPC64_TPREL16_HIGHA
:
7495 case R_PPC64_TPREL16_HIGHER
:
7496 case R_PPC64_TPREL16_HIGHERA
:
7497 case R_PPC64_TPREL16_HIGHEST
:
7498 case R_PPC64_TPREL16_HIGHESTA
:
7502 case R_PPC64_TPREL64
:
7503 case R_PPC64_DTPMOD64
:
7504 case R_PPC64_DTPREL64
:
7505 case R_PPC64_ADDR64
:
7509 case R_PPC64_ADDR14
:
7510 case R_PPC64_ADDR14_BRNTAKEN
:
7511 case R_PPC64_ADDR14_BRTAKEN
:
7512 case R_PPC64_ADDR16
:
7513 case R_PPC64_ADDR16_DS
:
7514 case R_PPC64_ADDR16_HA
:
7515 case R_PPC64_ADDR16_HI
:
7516 case R_PPC64_ADDR16_HIGH
:
7517 case R_PPC64_ADDR16_HIGHA
:
7518 case R_PPC64_ADDR16_HIGHER
:
7519 case R_PPC64_ADDR16_HIGHERA
:
7520 case R_PPC64_ADDR16_HIGHEST
:
7521 case R_PPC64_ADDR16_HIGHESTA
:
7522 case R_PPC64_ADDR16_LO
:
7523 case R_PPC64_ADDR16_LO_DS
:
7524 case R_PPC64_ADDR24
:
7525 case R_PPC64_ADDR32
:
7526 case R_PPC64_UADDR16
:
7527 case R_PPC64_UADDR32
:
7528 case R_PPC64_UADDR64
:
7533 if (local_syms
!= NULL
)
7535 unsigned long r_symndx
;
7536 bfd
*ibfd
= sec
->owner
;
7538 r_symndx
= ELF64_R_SYM (r_info
);
7539 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7544 && (must_be_dyn_reloc (info
, r_type
)
7546 && (!SYMBOLIC_BIND (info
, h
)
7547 || h
->root
.type
== bfd_link_hash_defweak
7548 || !h
->def_regular
))))
7549 || (ELIMINATE_COPY_RELOCS
7552 && (h
->root
.type
== bfd_link_hash_defweak
7553 || !h
->def_regular
)))
7560 struct elf_dyn_relocs
*p
;
7561 struct elf_dyn_relocs
**pp
;
7562 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7564 /* elf_gc_sweep may have already removed all dyn relocs associated
7565 with local syms for a given section. Also, symbol flags are
7566 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7567 report a dynreloc miscount. */
7568 if (*pp
== NULL
&& info
->gc_sections
)
7571 while ((p
= *pp
) != NULL
)
7575 if (!must_be_dyn_reloc (info
, r_type
))
7587 struct ppc_dyn_relocs
*p
;
7588 struct ppc_dyn_relocs
**pp
;
7590 bfd_boolean is_ifunc
;
7592 if (local_syms
== NULL
)
7593 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7594 if (sym_sec
== NULL
)
7597 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7598 pp
= (struct ppc_dyn_relocs
**) vpp
;
7600 if (*pp
== NULL
&& info
->gc_sections
)
7603 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7604 while ((p
= *pp
) != NULL
)
7606 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7617 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7619 bfd_set_error (bfd_error_bad_value
);
7623 /* Remove unused Official Procedure Descriptor entries. Currently we
7624 only remove those associated with functions in discarded link-once
7625 sections, or weakly defined functions that have been overridden. It
7626 would be possible to remove many more entries for statically linked
7630 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7633 bfd_boolean some_edited
= FALSE
;
7634 asection
*need_pad
= NULL
;
7635 struct ppc_link_hash_table
*htab
;
7637 htab
= ppc_hash_table (info
);
7641 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7644 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7645 Elf_Internal_Shdr
*symtab_hdr
;
7646 Elf_Internal_Sym
*local_syms
;
7647 struct _opd_sec_data
*opd
;
7648 bfd_boolean need_edit
, add_aux_fields
, broken
;
7649 bfd_size_type cnt_16b
= 0;
7651 if (!is_ppc64_elf (ibfd
))
7654 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7655 if (sec
== NULL
|| sec
->size
== 0)
7658 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7661 if (sec
->output_section
== bfd_abs_section_ptr
)
7664 /* Look through the section relocs. */
7665 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7669 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7671 /* Read the relocations. */
7672 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7674 if (relstart
== NULL
)
7677 /* First run through the relocs to check they are sane, and to
7678 determine whether we need to edit this opd section. */
7682 relend
= relstart
+ sec
->reloc_count
;
7683 for (rel
= relstart
; rel
< relend
; )
7685 enum elf_ppc64_reloc_type r_type
;
7686 unsigned long r_symndx
;
7688 struct elf_link_hash_entry
*h
;
7689 Elf_Internal_Sym
*sym
;
7692 /* .opd contains an array of 16 or 24 byte entries. We're
7693 only interested in the reloc pointing to a function entry
7695 offset
= rel
->r_offset
;
7696 if (rel
+ 1 == relend
7697 || rel
[1].r_offset
!= offset
+ 8)
7699 /* If someone messes with .opd alignment then after a
7700 "ld -r" we might have padding in the middle of .opd.
7701 Also, there's nothing to prevent someone putting
7702 something silly in .opd with the assembler. No .opd
7703 optimization for them! */
7705 (*_bfd_error_handler
)
7706 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7711 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7712 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7714 (*_bfd_error_handler
)
7715 (_("%B: unexpected reloc type %u in .opd section"),
7721 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7722 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7726 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7728 const char *sym_name
;
7730 sym_name
= h
->root
.root
.string
;
7732 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7735 (*_bfd_error_handler
)
7736 (_("%B: undefined sym `%s' in .opd section"),
7742 /* opd entries are always for functions defined in the
7743 current input bfd. If the symbol isn't defined in the
7744 input bfd, then we won't be using the function in this
7745 bfd; It must be defined in a linkonce section in another
7746 bfd, or is weak. It's also possible that we are
7747 discarding the function due to a linker script /DISCARD/,
7748 which we test for via the output_section. */
7749 if (sym_sec
->owner
!= ibfd
7750 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7754 if (rel
+ 1 == relend
7755 || (rel
+ 2 < relend
7756 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
))
7761 if (sec
->size
== offset
+ 24)
7766 if (sec
->size
== offset
+ 16)
7773 else if (rel
+ 1 < relend
7774 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7775 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7777 if (rel
[0].r_offset
== offset
+ 16)
7779 else if (rel
[0].r_offset
!= offset
+ 24)
7786 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7788 if (!broken
&& (need_edit
|| add_aux_fields
))
7790 Elf_Internal_Rela
*write_rel
;
7791 Elf_Internal_Shdr
*rel_hdr
;
7792 bfd_byte
*rptr
, *wptr
;
7793 bfd_byte
*new_contents
;
7796 new_contents
= NULL
;
7797 amt
= OPD_NDX (sec
->size
) * sizeof (long);
7798 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7799 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7800 if (opd
->adjust
== NULL
)
7802 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7804 /* This seems a waste of time as input .opd sections are all
7805 zeros as generated by gcc, but I suppose there's no reason
7806 this will always be so. We might start putting something in
7807 the third word of .opd entries. */
7808 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7811 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7816 if (local_syms
!= NULL
7817 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7819 if (elf_section_data (sec
)->relocs
!= relstart
)
7823 sec
->contents
= loc
;
7824 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7827 elf_section_data (sec
)->relocs
= relstart
;
7829 new_contents
= sec
->contents
;
7832 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7833 if (new_contents
== NULL
)
7837 wptr
= new_contents
;
7838 rptr
= sec
->contents
;
7839 write_rel
= relstart
;
7840 for (rel
= relstart
; rel
< relend
; )
7842 unsigned long r_symndx
;
7844 struct elf_link_hash_entry
*h
;
7845 struct ppc_link_hash_entry
*fdh
= NULL
;
7846 Elf_Internal_Sym
*sym
;
7848 Elf_Internal_Rela
*next_rel
;
7851 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7852 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7857 if (next_rel
+ 1 == relend
7858 || (next_rel
+ 2 < relend
7859 && ELF64_R_TYPE (next_rel
[2].r_info
) == R_PPC64_TOC
))
7862 /* See if the .opd entry is full 24 byte or
7863 16 byte (with fd_aux entry overlapped with next
7866 if (next_rel
== relend
)
7868 if (sec
->size
== rel
->r_offset
+ 16)
7871 else if (next_rel
->r_offset
== rel
->r_offset
+ 16)
7875 && h
->root
.root
.string
[0] == '.')
7877 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
7879 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7880 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7884 skip
= (sym_sec
->owner
!= ibfd
7885 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7888 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7890 /* Arrange for the function descriptor sym
7892 fdh
->elf
.root
.u
.def
.value
= 0;
7893 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7895 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = -1;
7897 if (NO_OPD_RELOCS
|| info
->relocatable
)
7902 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7906 if (++rel
== next_rel
)
7909 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7910 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7917 /* We'll be keeping this opd entry. */
7922 /* Redefine the function descriptor symbol to
7923 this location in the opd section. It is
7924 necessary to update the value here rather
7925 than using an array of adjustments as we do
7926 for local symbols, because various places
7927 in the generic ELF code use the value
7928 stored in u.def.value. */
7929 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7930 fdh
->adjust_done
= 1;
7933 /* Local syms are a bit tricky. We could
7934 tweak them as they can be cached, but
7935 we'd need to look through the local syms
7936 for the function descriptor sym which we
7937 don't have at the moment. So keep an
7938 array of adjustments. */
7939 adjust
= (wptr
- new_contents
) - (rptr
- sec
->contents
);
7940 opd
->adjust
[OPD_NDX (rel
->r_offset
)] = adjust
;
7943 memcpy (wptr
, rptr
, opd_ent_size
);
7944 wptr
+= opd_ent_size
;
7945 if (add_aux_fields
&& opd_ent_size
== 16)
7947 memset (wptr
, '\0', 8);
7951 /* We need to adjust any reloc offsets to point to the
7953 for ( ; rel
!= next_rel
; ++rel
)
7955 rel
->r_offset
+= adjust
;
7956 if (write_rel
!= rel
)
7957 memcpy (write_rel
, rel
, sizeof (*rel
));
7962 rptr
+= opd_ent_size
;
7965 sec
->size
= wptr
- new_contents
;
7966 sec
->reloc_count
= write_rel
- relstart
;
7969 free (sec
->contents
);
7970 sec
->contents
= new_contents
;
7973 /* Fudge the header size too, as this is used later in
7974 elf_bfd_final_link if we are emitting relocs. */
7975 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7976 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7979 else if (elf_section_data (sec
)->relocs
!= relstart
)
7982 if (local_syms
!= NULL
7983 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7985 if (!info
->keep_memory
)
7988 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7993 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7995 /* If we are doing a final link and the last .opd entry is just 16 byte
7996 long, add a 8 byte padding after it. */
7997 if (need_pad
!= NULL
&& !info
->relocatable
)
8001 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
8003 BFD_ASSERT (need_pad
->size
> 0);
8005 p
= bfd_malloc (need_pad
->size
+ 8);
8009 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
8010 p
, 0, need_pad
->size
))
8013 need_pad
->contents
= p
;
8014 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
8018 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
8022 need_pad
->contents
= p
;
8025 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
8026 need_pad
->size
+= 8;
8032 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8035 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
8037 struct ppc_link_hash_table
*htab
;
8039 htab
= ppc_hash_table (info
);
8043 if (abiversion (info
->output_bfd
) == 1)
8046 if (htab
->params
->no_multi_toc
)
8047 htab
->do_multi_toc
= 0;
8048 else if (!htab
->do_multi_toc
)
8049 htab
->params
->no_multi_toc
= 1;
8051 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8052 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8053 FALSE
, FALSE
, TRUE
));
8054 /* Move dynamic linking info to the function descriptor sym. */
8055 if (htab
->tls_get_addr
!= NULL
)
8056 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8057 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8058 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8059 FALSE
, FALSE
, TRUE
));
8060 if (!htab
->params
->no_tls_get_addr_opt
)
8062 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8064 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8065 FALSE
, FALSE
, TRUE
);
8067 func_desc_adjust (opt
, info
);
8068 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8069 FALSE
, FALSE
, TRUE
);
8071 && (opt_fd
->root
.type
== bfd_link_hash_defined
8072 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8074 /* If glibc supports an optimized __tls_get_addr call stub,
8075 signalled by the presence of __tls_get_addr_opt, and we'll
8076 be calling __tls_get_addr via a plt call stub, then
8077 make __tls_get_addr point to __tls_get_addr_opt. */
8078 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8079 if (htab
->elf
.dynamic_sections_created
8081 && (tga_fd
->type
== STT_FUNC
8082 || tga_fd
->needs_plt
)
8083 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8084 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8085 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8087 struct plt_entry
*ent
;
8089 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8090 if (ent
->plt
.refcount
> 0)
8094 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8095 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8096 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8097 if (opt_fd
->dynindx
!= -1)
8099 /* Use __tls_get_addr_opt in dynamic relocations. */
8100 opt_fd
->dynindx
= -1;
8101 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8102 opt_fd
->dynstr_index
);
8103 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8106 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8107 tga
= &htab
->tls_get_addr
->elf
;
8108 if (opt
!= NULL
&& tga
!= NULL
)
8110 tga
->root
.type
= bfd_link_hash_indirect
;
8111 tga
->root
.u
.i
.link
= &opt
->root
;
8112 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8113 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8115 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8117 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8118 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8119 if (htab
->tls_get_addr
!= NULL
)
8121 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8122 htab
->tls_get_addr
->is_func
= 1;
8128 htab
->params
->no_tls_get_addr_opt
= TRUE
;
8130 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8133 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8137 branch_reloc_hash_match (const bfd
*ibfd
,
8138 const Elf_Internal_Rela
*rel
,
8139 const struct ppc_link_hash_entry
*hash1
,
8140 const struct ppc_link_hash_entry
*hash2
)
8142 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8143 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8144 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8146 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8148 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8149 struct elf_link_hash_entry
*h
;
8151 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8152 h
= elf_follow_link (h
);
8153 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8159 /* Run through all the TLS relocs looking for optimization
8160 opportunities. The linker has been hacked (see ppc64elf.em) to do
8161 a preliminary section layout so that we know the TLS segment
8162 offsets. We can't optimize earlier because some optimizations need
8163 to know the tp offset, and we need to optimize before allocating
8164 dynamic relocations. */
8167 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8171 struct ppc_link_hash_table
*htab
;
8172 unsigned char *toc_ref
;
8175 if (info
->relocatable
|| !info
->executable
)
8178 htab
= ppc_hash_table (info
);
8182 /* Make two passes over the relocs. On the first pass, mark toc
8183 entries involved with tls relocs, and check that tls relocs
8184 involved in setting up a tls_get_addr call are indeed followed by
8185 such a call. If they are not, we can't do any tls optimization.
8186 On the second pass twiddle tls_mask flags to notify
8187 relocate_section that optimization can be done, and adjust got
8188 and plt refcounts. */
8190 for (pass
= 0; pass
< 2; ++pass
)
8191 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8193 Elf_Internal_Sym
*locsyms
= NULL
;
8194 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8196 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8197 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8199 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8200 bfd_boolean found_tls_get_addr_arg
= 0;
8202 /* Read the relocations. */
8203 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8205 if (relstart
== NULL
)
8211 relend
= relstart
+ sec
->reloc_count
;
8212 for (rel
= relstart
; rel
< relend
; rel
++)
8214 enum elf_ppc64_reloc_type r_type
;
8215 unsigned long r_symndx
;
8216 struct elf_link_hash_entry
*h
;
8217 Elf_Internal_Sym
*sym
;
8219 unsigned char *tls_mask
;
8220 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8222 bfd_boolean ok_tprel
, is_local
;
8223 long toc_ref_index
= 0;
8224 int expecting_tls_get_addr
= 0;
8225 bfd_boolean ret
= FALSE
;
8227 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8228 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8232 if (elf_section_data (sec
)->relocs
!= relstart
)
8234 if (toc_ref
!= NULL
)
8237 && (elf_symtab_hdr (ibfd
).contents
8238 != (unsigned char *) locsyms
))
8245 if (h
->root
.type
== bfd_link_hash_defined
8246 || h
->root
.type
== bfd_link_hash_defweak
)
8247 value
= h
->root
.u
.def
.value
;
8248 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8252 found_tls_get_addr_arg
= 0;
8257 /* Symbols referenced by TLS relocs must be of type
8258 STT_TLS. So no need for .opd local sym adjust. */
8259 value
= sym
->st_value
;
8268 && h
->root
.type
== bfd_link_hash_undefweak
)
8272 value
+= sym_sec
->output_offset
;
8273 value
+= sym_sec
->output_section
->vma
;
8274 value
-= htab
->elf
.tls_sec
->vma
;
8275 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8276 < (bfd_vma
) 1 << 32);
8280 r_type
= ELF64_R_TYPE (rel
->r_info
);
8281 /* If this section has old-style __tls_get_addr calls
8282 without marker relocs, then check that each
8283 __tls_get_addr call reloc is preceded by a reloc
8284 that conceivably belongs to the __tls_get_addr arg
8285 setup insn. If we don't find matching arg setup
8286 relocs, don't do any tls optimization. */
8288 && sec
->has_tls_get_addr_call
8290 && (h
== &htab
->tls_get_addr
->elf
8291 || h
== &htab
->tls_get_addr_fd
->elf
)
8292 && !found_tls_get_addr_arg
8293 && is_branch_reloc (r_type
))
8295 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8296 "TLS optimization disabled\n"),
8297 ibfd
, sec
, rel
->r_offset
);
8302 found_tls_get_addr_arg
= 0;
8305 case R_PPC64_GOT_TLSLD16
:
8306 case R_PPC64_GOT_TLSLD16_LO
:
8307 expecting_tls_get_addr
= 1;
8308 found_tls_get_addr_arg
= 1;
8311 case R_PPC64_GOT_TLSLD16_HI
:
8312 case R_PPC64_GOT_TLSLD16_HA
:
8313 /* These relocs should never be against a symbol
8314 defined in a shared lib. Leave them alone if
8315 that turns out to be the case. */
8322 tls_type
= TLS_TLS
| TLS_LD
;
8325 case R_PPC64_GOT_TLSGD16
:
8326 case R_PPC64_GOT_TLSGD16_LO
:
8327 expecting_tls_get_addr
= 1;
8328 found_tls_get_addr_arg
= 1;
8331 case R_PPC64_GOT_TLSGD16_HI
:
8332 case R_PPC64_GOT_TLSGD16_HA
:
8338 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8340 tls_type
= TLS_TLS
| TLS_GD
;
8343 case R_PPC64_GOT_TPREL16_DS
:
8344 case R_PPC64_GOT_TPREL16_LO_DS
:
8345 case R_PPC64_GOT_TPREL16_HI
:
8346 case R_PPC64_GOT_TPREL16_HA
:
8351 tls_clear
= TLS_TPREL
;
8352 tls_type
= TLS_TLS
| TLS_TPREL
;
8359 found_tls_get_addr_arg
= 1;
8364 case R_PPC64_TOC16_LO
:
8365 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8368 /* Mark this toc entry as referenced by a TLS
8369 code sequence. We can do that now in the
8370 case of R_PPC64_TLS, and after checking for
8371 tls_get_addr for the TOC16 relocs. */
8372 if (toc_ref
== NULL
)
8373 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8374 if (toc_ref
== NULL
)
8378 value
= h
->root
.u
.def
.value
;
8380 value
= sym
->st_value
;
8381 value
+= rel
->r_addend
;
8384 BFD_ASSERT (value
< toc
->size
8385 && toc
->output_offset
% 8 == 0);
8386 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8387 if (r_type
== R_PPC64_TLS
8388 || r_type
== R_PPC64_TLSGD
8389 || r_type
== R_PPC64_TLSLD
)
8391 toc_ref
[toc_ref_index
] = 1;
8395 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8400 expecting_tls_get_addr
= 2;
8403 case R_PPC64_TPREL64
:
8407 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8412 tls_set
= TLS_EXPLICIT
;
8413 tls_clear
= TLS_TPREL
;
8418 case R_PPC64_DTPMOD64
:
8422 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8424 if (rel
+ 1 < relend
8426 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8427 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8431 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8434 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8443 tls_set
= TLS_EXPLICIT
;
8454 if (!expecting_tls_get_addr
8455 || !sec
->has_tls_get_addr_call
)
8458 if (rel
+ 1 < relend
8459 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8461 htab
->tls_get_addr_fd
))
8463 if (expecting_tls_get_addr
== 2)
8465 /* Check for toc tls entries. */
8466 unsigned char *toc_tls
;
8469 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8474 if (toc_tls
!= NULL
)
8476 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8477 found_tls_get_addr_arg
= 1;
8479 toc_ref
[toc_ref_index
] = 1;
8485 if (expecting_tls_get_addr
!= 1)
8488 /* Uh oh, we didn't find the expected call. We
8489 could just mark this symbol to exclude it
8490 from tls optimization but it's safer to skip
8491 the entire optimization. */
8492 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8493 "TLS optimization disabled\n"),
8494 ibfd
, sec
, rel
->r_offset
);
8499 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8501 struct plt_entry
*ent
;
8502 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8505 if (ent
->addend
== 0)
8507 if (ent
->plt
.refcount
> 0)
8509 ent
->plt
.refcount
-= 1;
8510 expecting_tls_get_addr
= 0;
8516 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8518 struct plt_entry
*ent
;
8519 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8522 if (ent
->addend
== 0)
8524 if (ent
->plt
.refcount
> 0)
8525 ent
->plt
.refcount
-= 1;
8533 if ((tls_set
& TLS_EXPLICIT
) == 0)
8535 struct got_entry
*ent
;
8537 /* Adjust got entry for this reloc. */
8541 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8543 for (; ent
!= NULL
; ent
= ent
->next
)
8544 if (ent
->addend
== rel
->r_addend
8545 && ent
->owner
== ibfd
8546 && ent
->tls_type
== tls_type
)
8553 /* We managed to get rid of a got entry. */
8554 if (ent
->got
.refcount
> 0)
8555 ent
->got
.refcount
-= 1;
8560 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8561 we'll lose one or two dyn relocs. */
8562 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8566 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8568 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8574 *tls_mask
|= tls_set
;
8575 *tls_mask
&= ~tls_clear
;
8578 if (elf_section_data (sec
)->relocs
!= relstart
)
8583 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8585 if (!info
->keep_memory
)
8588 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8592 if (toc_ref
!= NULL
)
8597 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8598 the values of any global symbols in a toc section that has been
8599 edited. Globals in toc sections should be a rarity, so this function
8600 sets a flag if any are found in toc sections other than the one just
8601 edited, so that futher hash table traversals can be avoided. */
8603 struct adjust_toc_info
8606 unsigned long *skip
;
8607 bfd_boolean global_toc_syms
;
8610 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8613 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8615 struct ppc_link_hash_entry
*eh
;
8616 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8619 if (h
->root
.type
!= bfd_link_hash_defined
8620 && h
->root
.type
!= bfd_link_hash_defweak
)
8623 eh
= (struct ppc_link_hash_entry
*) h
;
8624 if (eh
->adjust_done
)
8627 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8629 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8630 i
= toc_inf
->toc
->rawsize
>> 3;
8632 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8634 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8636 (*_bfd_error_handler
)
8637 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8640 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8641 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8644 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8645 eh
->adjust_done
= 1;
8647 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8648 toc_inf
->global_toc_syms
= TRUE
;
8653 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8656 ok_lo_toc_insn (unsigned int insn
)
8658 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8659 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8660 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8661 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8662 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8663 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8664 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8665 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8666 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8667 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8668 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8669 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8670 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8671 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8672 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8674 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8675 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8676 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8679 /* Examine all relocs referencing .toc sections in order to remove
8680 unused .toc entries. */
8683 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8686 struct adjust_toc_info toc_inf
;
8687 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8689 htab
->do_toc_opt
= 1;
8690 toc_inf
.global_toc_syms
= TRUE
;
8691 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8693 asection
*toc
, *sec
;
8694 Elf_Internal_Shdr
*symtab_hdr
;
8695 Elf_Internal_Sym
*local_syms
;
8696 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8697 unsigned long *skip
, *drop
;
8698 unsigned char *used
;
8699 unsigned char *keep
, last
, some_unused
;
8701 if (!is_ppc64_elf (ibfd
))
8704 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8707 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8708 || discarded_section (toc
))
8713 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8715 /* Look at sections dropped from the final link. */
8718 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8720 if (sec
->reloc_count
== 0
8721 || !discarded_section (sec
)
8722 || get_opd_info (sec
)
8723 || (sec
->flags
& SEC_ALLOC
) == 0
8724 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8727 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8728 if (relstart
== NULL
)
8731 /* Run through the relocs to see which toc entries might be
8733 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8735 enum elf_ppc64_reloc_type r_type
;
8736 unsigned long r_symndx
;
8738 struct elf_link_hash_entry
*h
;
8739 Elf_Internal_Sym
*sym
;
8742 r_type
= ELF64_R_TYPE (rel
->r_info
);
8749 case R_PPC64_TOC16_LO
:
8750 case R_PPC64_TOC16_HI
:
8751 case R_PPC64_TOC16_HA
:
8752 case R_PPC64_TOC16_DS
:
8753 case R_PPC64_TOC16_LO_DS
:
8757 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8758 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8766 val
= h
->root
.u
.def
.value
;
8768 val
= sym
->st_value
;
8769 val
+= rel
->r_addend
;
8771 if (val
>= toc
->size
)
8774 /* Anything in the toc ought to be aligned to 8 bytes.
8775 If not, don't mark as unused. */
8781 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8786 skip
[val
>> 3] = ref_from_discarded
;
8789 if (elf_section_data (sec
)->relocs
!= relstart
)
8793 /* For largetoc loads of address constants, we can convert
8794 . addis rx,2,addr@got@ha
8795 . ld ry,addr@got@l(rx)
8797 . addis rx,2,addr@toc@ha
8798 . addi ry,rx,addr@toc@l
8799 when addr is within 2G of the toc pointer. This then means
8800 that the word storing "addr" in the toc is no longer needed. */
8802 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8803 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8804 && toc
->reloc_count
!= 0)
8806 /* Read toc relocs. */
8807 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8809 if (toc_relocs
== NULL
)
8812 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8814 enum elf_ppc64_reloc_type r_type
;
8815 unsigned long r_symndx
;
8817 struct elf_link_hash_entry
*h
;
8818 Elf_Internal_Sym
*sym
;
8821 r_type
= ELF64_R_TYPE (rel
->r_info
);
8822 if (r_type
!= R_PPC64_ADDR64
)
8825 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8826 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8831 || discarded_section (sym_sec
))
8834 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8839 if (h
->type
== STT_GNU_IFUNC
)
8841 val
= h
->root
.u
.def
.value
;
8845 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8847 val
= sym
->st_value
;
8849 val
+= rel
->r_addend
;
8850 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8852 /* We don't yet know the exact toc pointer value, but we
8853 know it will be somewhere in the toc section. Don't
8854 optimize if the difference from any possible toc
8855 pointer is outside [ff..f80008000, 7fff7fff]. */
8856 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8857 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8860 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8861 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8866 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8871 skip
[rel
->r_offset
>> 3]
8872 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8879 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8883 if (local_syms
!= NULL
8884 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8888 && elf_section_data (sec
)->relocs
!= relstart
)
8890 if (toc_relocs
!= NULL
8891 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8898 /* Now check all kept sections that might reference the toc.
8899 Check the toc itself last. */
8900 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8903 sec
= (sec
== toc
? NULL
8904 : sec
->next
== NULL
? toc
8905 : sec
->next
== toc
&& toc
->next
? toc
->next
8910 if (sec
->reloc_count
== 0
8911 || discarded_section (sec
)
8912 || get_opd_info (sec
)
8913 || (sec
->flags
& SEC_ALLOC
) == 0
8914 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8917 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8919 if (relstart
== NULL
)
8925 /* Mark toc entries referenced as used. */
8929 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8931 enum elf_ppc64_reloc_type r_type
;
8932 unsigned long r_symndx
;
8934 struct elf_link_hash_entry
*h
;
8935 Elf_Internal_Sym
*sym
;
8937 enum {no_check
, check_lo
, check_ha
} insn_check
;
8939 r_type
= ELF64_R_TYPE (rel
->r_info
);
8943 insn_check
= no_check
;
8946 case R_PPC64_GOT_TLSLD16_HA
:
8947 case R_PPC64_GOT_TLSGD16_HA
:
8948 case R_PPC64_GOT_TPREL16_HA
:
8949 case R_PPC64_GOT_DTPREL16_HA
:
8950 case R_PPC64_GOT16_HA
:
8951 case R_PPC64_TOC16_HA
:
8952 insn_check
= check_ha
;
8955 case R_PPC64_GOT_TLSLD16_LO
:
8956 case R_PPC64_GOT_TLSGD16_LO
:
8957 case R_PPC64_GOT_TPREL16_LO_DS
:
8958 case R_PPC64_GOT_DTPREL16_LO_DS
:
8959 case R_PPC64_GOT16_LO
:
8960 case R_PPC64_GOT16_LO_DS
:
8961 case R_PPC64_TOC16_LO
:
8962 case R_PPC64_TOC16_LO_DS
:
8963 insn_check
= check_lo
;
8967 if (insn_check
!= no_check
)
8969 bfd_vma off
= rel
->r_offset
& ~3;
8970 unsigned char buf
[4];
8973 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8978 insn
= bfd_get_32 (ibfd
, buf
);
8979 if (insn_check
== check_lo
8980 ? !ok_lo_toc_insn (insn
)
8981 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8982 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8986 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8987 sprintf (str
, "%#08x", insn
);
8988 info
->callbacks
->einfo
8989 (_("%P: %H: toc optimization is not supported for"
8990 " %s instruction.\n"),
8991 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8998 case R_PPC64_TOC16_LO
:
8999 case R_PPC64_TOC16_HI
:
9000 case R_PPC64_TOC16_HA
:
9001 case R_PPC64_TOC16_DS
:
9002 case R_PPC64_TOC16_LO_DS
:
9003 /* In case we're taking addresses of toc entries. */
9004 case R_PPC64_ADDR64
:
9011 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9012 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9023 val
= h
->root
.u
.def
.value
;
9025 val
= sym
->st_value
;
9026 val
+= rel
->r_addend
;
9028 if (val
>= toc
->size
)
9031 if ((skip
[val
>> 3] & can_optimize
) != 0)
9038 case R_PPC64_TOC16_HA
:
9041 case R_PPC64_TOC16_LO_DS
:
9042 off
= rel
->r_offset
;
9043 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
9044 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
9050 if ((opc
& (0x3f << 2)) == (58u << 2))
9055 /* Wrong sort of reloc, or not a ld. We may
9056 as well clear ref_from_discarded too. */
9063 /* For the toc section, we only mark as used if this
9064 entry itself isn't unused. */
9065 else if ((used
[rel
->r_offset
>> 3]
9066 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9069 /* Do all the relocs again, to catch reference
9078 if (elf_section_data (sec
)->relocs
!= relstart
)
9082 /* Merge the used and skip arrays. Assume that TOC
9083 doublewords not appearing as either used or unused belong
9084 to to an entry more than one doubleword in size. */
9085 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9086 drop
< skip
+ (toc
->size
+ 7) / 8;
9091 *drop
&= ~ref_from_discarded
;
9092 if ((*drop
& can_optimize
) != 0)
9096 else if ((*drop
& ref_from_discarded
) != 0)
9099 last
= ref_from_discarded
;
9109 bfd_byte
*contents
, *src
;
9111 Elf_Internal_Sym
*sym
;
9112 bfd_boolean local_toc_syms
= FALSE
;
9114 /* Shuffle the toc contents, and at the same time convert the
9115 skip array from booleans into offsets. */
9116 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9119 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9121 for (src
= contents
, off
= 0, drop
= skip
;
9122 src
< contents
+ toc
->size
;
9125 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9130 memcpy (src
- off
, src
, 8);
9134 toc
->rawsize
= toc
->size
;
9135 toc
->size
= src
- contents
- off
;
9137 /* Adjust addends for relocs against the toc section sym,
9138 and optimize any accesses we can. */
9139 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9141 if (sec
->reloc_count
== 0
9142 || discarded_section (sec
))
9145 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9147 if (relstart
== NULL
)
9150 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9152 enum elf_ppc64_reloc_type r_type
;
9153 unsigned long r_symndx
;
9155 struct elf_link_hash_entry
*h
;
9158 r_type
= ELF64_R_TYPE (rel
->r_info
);
9165 case R_PPC64_TOC16_LO
:
9166 case R_PPC64_TOC16_HI
:
9167 case R_PPC64_TOC16_HA
:
9168 case R_PPC64_TOC16_DS
:
9169 case R_PPC64_TOC16_LO_DS
:
9170 case R_PPC64_ADDR64
:
9174 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9175 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9183 val
= h
->root
.u
.def
.value
;
9186 val
= sym
->st_value
;
9188 local_toc_syms
= TRUE
;
9191 val
+= rel
->r_addend
;
9193 if (val
> toc
->rawsize
)
9195 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9197 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9199 Elf_Internal_Rela
*tocrel
9200 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9201 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9205 case R_PPC64_TOC16_HA
:
9206 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9209 case R_PPC64_TOC16_LO_DS
:
9210 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9214 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9216 info
->callbacks
->einfo
9217 (_("%P: %H: %s references "
9218 "optimized away TOC entry\n"),
9219 ibfd
, sec
, rel
->r_offset
,
9220 ppc64_elf_howto_table
[r_type
]->name
);
9221 bfd_set_error (bfd_error_bad_value
);
9224 rel
->r_addend
= tocrel
->r_addend
;
9225 elf_section_data (sec
)->relocs
= relstart
;
9229 if (h
!= NULL
|| sym
->st_value
!= 0)
9232 rel
->r_addend
-= skip
[val
>> 3];
9233 elf_section_data (sec
)->relocs
= relstart
;
9236 if (elf_section_data (sec
)->relocs
!= relstart
)
9240 /* We shouldn't have local or global symbols defined in the TOC,
9241 but handle them anyway. */
9242 if (local_syms
!= NULL
)
9243 for (sym
= local_syms
;
9244 sym
< local_syms
+ symtab_hdr
->sh_info
;
9246 if (sym
->st_value
!= 0
9247 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9251 if (sym
->st_value
> toc
->rawsize
)
9252 i
= toc
->rawsize
>> 3;
9254 i
= sym
->st_value
>> 3;
9256 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9259 (*_bfd_error_handler
)
9260 (_("%s defined on removed toc entry"),
9261 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9264 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9265 sym
->st_value
= (bfd_vma
) i
<< 3;
9268 sym
->st_value
-= skip
[i
];
9269 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9272 /* Adjust any global syms defined in this toc input section. */
9273 if (toc_inf
.global_toc_syms
)
9276 toc_inf
.skip
= skip
;
9277 toc_inf
.global_toc_syms
= FALSE
;
9278 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9282 if (toc
->reloc_count
!= 0)
9284 Elf_Internal_Shdr
*rel_hdr
;
9285 Elf_Internal_Rela
*wrel
;
9288 /* Remove unused toc relocs, and adjust those we keep. */
9289 if (toc_relocs
== NULL
)
9290 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9292 if (toc_relocs
== NULL
)
9296 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9297 if ((skip
[rel
->r_offset
>> 3]
9298 & (ref_from_discarded
| can_optimize
)) == 0)
9300 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9301 wrel
->r_info
= rel
->r_info
;
9302 wrel
->r_addend
= rel
->r_addend
;
9305 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9306 &local_syms
, NULL
, NULL
))
9309 elf_section_data (toc
)->relocs
= toc_relocs
;
9310 toc
->reloc_count
= wrel
- toc_relocs
;
9311 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9312 sz
= rel_hdr
->sh_entsize
;
9313 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9316 else if (toc_relocs
!= NULL
9317 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9320 if (local_syms
!= NULL
9321 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9323 if (!info
->keep_memory
)
9326 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9334 /* Return true iff input section I references the TOC using
9335 instructions limited to +/-32k offsets. */
9338 ppc64_elf_has_small_toc_reloc (asection
*i
)
9340 return (is_ppc64_elf (i
->owner
)
9341 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9344 /* Allocate space for one GOT entry. */
9347 allocate_got (struct elf_link_hash_entry
*h
,
9348 struct bfd_link_info
*info
,
9349 struct got_entry
*gent
)
9351 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9353 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9354 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9356 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9357 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9358 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9360 gent
->got
.offset
= got
->size
;
9361 got
->size
+= entsize
;
9363 dyn
= htab
->elf
.dynamic_sections_created
;
9364 if (h
->type
== STT_GNU_IFUNC
)
9366 htab
->elf
.irelplt
->size
+= rentsize
;
9367 htab
->got_reli_size
+= rentsize
;
9369 else if ((info
->shared
9370 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9371 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9372 || h
->root
.type
!= bfd_link_hash_undefweak
))
9374 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9375 relgot
->size
+= rentsize
;
9379 /* This function merges got entries in the same toc group. */
9382 merge_got_entries (struct got_entry
**pent
)
9384 struct got_entry
*ent
, *ent2
;
9386 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9387 if (!ent
->is_indirect
)
9388 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9389 if (!ent2
->is_indirect
9390 && ent2
->addend
== ent
->addend
9391 && ent2
->tls_type
== ent
->tls_type
9392 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9394 ent2
->is_indirect
= TRUE
;
9395 ent2
->got
.ent
= ent
;
9399 /* Allocate space in .plt, .got and associated reloc sections for
9403 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9405 struct bfd_link_info
*info
;
9406 struct ppc_link_hash_table
*htab
;
9408 struct ppc_link_hash_entry
*eh
;
9409 struct elf_dyn_relocs
*p
;
9410 struct got_entry
**pgent
, *gent
;
9412 if (h
->root
.type
== bfd_link_hash_indirect
)
9415 info
= (struct bfd_link_info
*) inf
;
9416 htab
= ppc_hash_table (info
);
9420 if ((htab
->elf
.dynamic_sections_created
9422 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
9423 || h
->type
== STT_GNU_IFUNC
)
9425 struct plt_entry
*pent
;
9426 bfd_boolean doneone
= FALSE
;
9427 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9428 if (pent
->plt
.refcount
> 0)
9430 if (!htab
->elf
.dynamic_sections_created
9431 || h
->dynindx
== -1)
9434 pent
->plt
.offset
= s
->size
;
9435 s
->size
+= PLT_ENTRY_SIZE (htab
);
9436 s
= htab
->elf
.irelplt
;
9440 /* If this is the first .plt entry, make room for the special
9444 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9446 pent
->plt
.offset
= s
->size
;
9448 /* Make room for this entry. */
9449 s
->size
+= PLT_ENTRY_SIZE (htab
);
9451 /* Make room for the .glink code. */
9454 s
->size
+= GLINK_CALL_STUB_SIZE
;
9457 /* We need bigger stubs past index 32767. */
9458 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9465 /* We also need to make an entry in the .rela.plt section. */
9466 s
= htab
->elf
.srelplt
;
9468 s
->size
+= sizeof (Elf64_External_Rela
);
9472 pent
->plt
.offset
= (bfd_vma
) -1;
9475 h
->plt
.plist
= NULL
;
9481 h
->plt
.plist
= NULL
;
9485 eh
= (struct ppc_link_hash_entry
*) h
;
9486 /* Run through the TLS GD got entries first if we're changing them
9488 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9489 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9490 if (gent
->got
.refcount
> 0
9491 && (gent
->tls_type
& TLS_GD
) != 0)
9493 /* This was a GD entry that has been converted to TPREL. If
9494 there happens to be a TPREL entry we can use that one. */
9495 struct got_entry
*ent
;
9496 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9497 if (ent
->got
.refcount
> 0
9498 && (ent
->tls_type
& TLS_TPREL
) != 0
9499 && ent
->addend
== gent
->addend
9500 && ent
->owner
== gent
->owner
)
9502 gent
->got
.refcount
= 0;
9506 /* If not, then we'll be using our own TPREL entry. */
9507 if (gent
->got
.refcount
!= 0)
9508 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9511 /* Remove any list entry that won't generate a word in the GOT before
9512 we call merge_got_entries. Otherwise we risk merging to empty
9514 pgent
= &h
->got
.glist
;
9515 while ((gent
= *pgent
) != NULL
)
9516 if (gent
->got
.refcount
> 0)
9518 if ((gent
->tls_type
& TLS_LD
) != 0
9521 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9522 *pgent
= gent
->next
;
9525 pgent
= &gent
->next
;
9528 *pgent
= gent
->next
;
9530 if (!htab
->do_multi_toc
)
9531 merge_got_entries (&h
->got
.glist
);
9533 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9534 if (!gent
->is_indirect
)
9536 /* Make sure this symbol is output as a dynamic symbol.
9537 Undefined weak syms won't yet be marked as dynamic,
9538 nor will all TLS symbols. */
9539 if (h
->dynindx
== -1
9541 && h
->type
!= STT_GNU_IFUNC
9542 && htab
->elf
.dynamic_sections_created
)
9544 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9548 if (!is_ppc64_elf (gent
->owner
))
9551 allocate_got (h
, info
, gent
);
9554 if (eh
->dyn_relocs
== NULL
9555 || (!htab
->elf
.dynamic_sections_created
9556 && h
->type
!= STT_GNU_IFUNC
))
9559 /* In the shared -Bsymbolic case, discard space allocated for
9560 dynamic pc-relative relocs against symbols which turn out to be
9561 defined in regular objects. For the normal shared case, discard
9562 space for relocs that have become local due to symbol visibility
9567 /* Relocs that use pc_count are those that appear on a call insn,
9568 or certain REL relocs (see must_be_dyn_reloc) that can be
9569 generated via assembly. We want calls to protected symbols to
9570 resolve directly to the function rather than going via the plt.
9571 If people want function pointer comparisons to work as expected
9572 then they should avoid writing weird assembly. */
9573 if (SYMBOL_CALLS_LOCAL (info
, h
))
9575 struct elf_dyn_relocs
**pp
;
9577 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9579 p
->count
-= p
->pc_count
;
9588 /* Also discard relocs on undefined weak syms with non-default
9590 if (eh
->dyn_relocs
!= NULL
9591 && h
->root
.type
== bfd_link_hash_undefweak
)
9593 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9594 eh
->dyn_relocs
= NULL
;
9596 /* Make sure this symbol is output as a dynamic symbol.
9597 Undefined weak syms won't yet be marked as dynamic. */
9598 else if (h
->dynindx
== -1
9599 && !h
->forced_local
)
9601 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9606 else if (h
->type
== STT_GNU_IFUNC
)
9608 if (!h
->non_got_ref
)
9609 eh
->dyn_relocs
= NULL
;
9611 else if (ELIMINATE_COPY_RELOCS
)
9613 /* For the non-shared case, discard space for relocs against
9614 symbols which turn out to need copy relocs or are not
9620 /* Make sure this symbol is output as a dynamic symbol.
9621 Undefined weak syms won't yet be marked as dynamic. */
9622 if (h
->dynindx
== -1
9623 && !h
->forced_local
)
9625 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9629 /* If that succeeded, we know we'll be keeping all the
9631 if (h
->dynindx
!= -1)
9635 eh
->dyn_relocs
= NULL
;
9640 /* Finally, allocate space. */
9641 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9643 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9644 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9645 sreloc
= htab
->elf
.irelplt
;
9646 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9652 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9653 to set up space for global entry stubs. These are put in glink,
9654 after the branch table. */
9657 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9659 struct bfd_link_info
*info
;
9660 struct ppc_link_hash_table
*htab
;
9661 struct plt_entry
*pent
;
9664 if (h
->root
.type
== bfd_link_hash_indirect
)
9667 if (!h
->pointer_equality_needed
)
9674 htab
= ppc_hash_table (info
);
9679 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9680 if (pent
->plt
.offset
!= (bfd_vma
) -1
9681 && pent
->addend
== 0)
9683 /* For ELFv2, if this symbol is not defined in a regular file
9684 and we are not generating a shared library or pie, then we
9685 need to define the symbol in the executable on a call stub.
9686 This is to avoid text relocations. */
9687 s
->size
= (s
->size
+ 15) & -16;
9688 h
->root
.u
.def
.section
= s
;
9689 h
->root
.u
.def
.value
= s
->size
;
9696 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9697 read-only sections. */
9700 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9702 if (h
->root
.type
== bfd_link_hash_indirect
)
9705 if (readonly_dynrelocs (h
))
9707 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9709 /* Not an error, just cut short the traversal. */
9715 /* Set the sizes of the dynamic sections. */
9718 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9719 struct bfd_link_info
*info
)
9721 struct ppc_link_hash_table
*htab
;
9726 struct got_entry
*first_tlsld
;
9728 htab
= ppc_hash_table (info
);
9732 dynobj
= htab
->elf
.dynobj
;
9736 if (htab
->elf
.dynamic_sections_created
)
9738 /* Set the contents of the .interp section to the interpreter. */
9739 if (info
->executable
)
9741 s
= bfd_get_linker_section (dynobj
, ".interp");
9744 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9745 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9749 /* Set up .got offsets for local syms, and space for local dynamic
9751 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9753 struct got_entry
**lgot_ents
;
9754 struct got_entry
**end_lgot_ents
;
9755 struct plt_entry
**local_plt
;
9756 struct plt_entry
**end_local_plt
;
9757 unsigned char *lgot_masks
;
9758 bfd_size_type locsymcount
;
9759 Elf_Internal_Shdr
*symtab_hdr
;
9761 if (!is_ppc64_elf (ibfd
))
9764 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9766 struct ppc_dyn_relocs
*p
;
9768 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9770 if (!bfd_is_abs_section (p
->sec
)
9771 && bfd_is_abs_section (p
->sec
->output_section
))
9773 /* Input section has been discarded, either because
9774 it is a copy of a linkonce section or due to
9775 linker script /DISCARD/, so we'll be discarding
9778 else if (p
->count
!= 0)
9780 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9782 srel
= htab
->elf
.irelplt
;
9783 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9784 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9785 info
->flags
|= DF_TEXTREL
;
9790 lgot_ents
= elf_local_got_ents (ibfd
);
9794 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9795 locsymcount
= symtab_hdr
->sh_info
;
9796 end_lgot_ents
= lgot_ents
+ locsymcount
;
9797 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9798 end_local_plt
= local_plt
+ locsymcount
;
9799 lgot_masks
= (unsigned char *) end_local_plt
;
9800 s
= ppc64_elf_tdata (ibfd
)->got
;
9801 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9803 struct got_entry
**pent
, *ent
;
9806 while ((ent
= *pent
) != NULL
)
9807 if (ent
->got
.refcount
> 0)
9809 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9811 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9816 unsigned int ent_size
= 8;
9817 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9819 ent
->got
.offset
= s
->size
;
9820 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9825 s
->size
+= ent_size
;
9826 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9828 htab
->elf
.irelplt
->size
+= rel_size
;
9829 htab
->got_reli_size
+= rel_size
;
9831 else if (info
->shared
)
9833 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9834 srel
->size
+= rel_size
;
9843 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9844 for (; local_plt
< end_local_plt
; ++local_plt
)
9846 struct plt_entry
*ent
;
9848 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9849 if (ent
->plt
.refcount
> 0)
9852 ent
->plt
.offset
= s
->size
;
9853 s
->size
+= PLT_ENTRY_SIZE (htab
);
9855 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
9858 ent
->plt
.offset
= (bfd_vma
) -1;
9862 /* Allocate global sym .plt and .got entries, and space for global
9863 sym dynamic relocs. */
9864 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9865 /* Stash the end of glink branch table. */
9866 if (htab
->glink
!= NULL
)
9867 htab
->glink
->rawsize
= htab
->glink
->size
;
9869 if (!htab
->opd_abi
&& !info
->shared
)
9870 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
9873 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9875 struct got_entry
*ent
;
9877 if (!is_ppc64_elf (ibfd
))
9880 ent
= ppc64_tlsld_got (ibfd
);
9881 if (ent
->got
.refcount
> 0)
9883 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9885 ent
->is_indirect
= TRUE
;
9886 ent
->got
.ent
= first_tlsld
;
9890 if (first_tlsld
== NULL
)
9892 s
= ppc64_elf_tdata (ibfd
)->got
;
9893 ent
->got
.offset
= s
->size
;
9898 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9899 srel
->size
+= sizeof (Elf64_External_Rela
);
9904 ent
->got
.offset
= (bfd_vma
) -1;
9907 /* We now have determined the sizes of the various dynamic sections.
9908 Allocate memory for them. */
9910 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9912 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9915 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9916 /* These haven't been allocated yet; don't strip. */
9918 else if (s
== htab
->elf
.sgot
9919 || s
== htab
->elf
.splt
9920 || s
== htab
->elf
.iplt
9922 || s
== htab
->dynbss
)
9924 /* Strip this section if we don't need it; see the
9927 else if (s
== htab
->glink_eh_frame
)
9929 if (!bfd_is_abs_section (s
->output_section
))
9930 /* Not sized yet. */
9933 else if (CONST_STRNEQ (s
->name
, ".rela"))
9937 if (s
!= htab
->elf
.srelplt
)
9940 /* We use the reloc_count field as a counter if we need
9941 to copy relocs into the output file. */
9947 /* It's not one of our sections, so don't allocate space. */
9953 /* If we don't need this section, strip it from the
9954 output file. This is mostly to handle .rela.bss and
9955 .rela.plt. We must create both sections in
9956 create_dynamic_sections, because they must be created
9957 before the linker maps input sections to output
9958 sections. The linker does that before
9959 adjust_dynamic_symbol is called, and it is that
9960 function which decides whether anything needs to go
9961 into these sections. */
9962 s
->flags
|= SEC_EXCLUDE
;
9966 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9969 /* Allocate memory for the section contents. We use bfd_zalloc
9970 here in case unused entries are not reclaimed before the
9971 section's contents are written out. This should not happen,
9972 but this way if it does we get a R_PPC64_NONE reloc in .rela
9973 sections instead of garbage.
9974 We also rely on the section contents being zero when writing
9976 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9977 if (s
->contents
== NULL
)
9981 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9983 if (!is_ppc64_elf (ibfd
))
9986 s
= ppc64_elf_tdata (ibfd
)->got
;
9987 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
9990 s
->flags
|= SEC_EXCLUDE
;
9993 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9994 if (s
->contents
== NULL
)
9998 s
= ppc64_elf_tdata (ibfd
)->relgot
;
10002 s
->flags
|= SEC_EXCLUDE
;
10005 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
10006 if (s
->contents
== NULL
)
10009 s
->reloc_count
= 0;
10014 if (htab
->elf
.dynamic_sections_created
)
10016 bfd_boolean tls_opt
;
10018 /* Add some entries to the .dynamic section. We fill in the
10019 values later, in ppc64_elf_finish_dynamic_sections, but we
10020 must add the entries now so that we get the correct size for
10021 the .dynamic section. The DT_DEBUG entry is filled in by the
10022 dynamic linker and used by the debugger. */
10023 #define add_dynamic_entry(TAG, VAL) \
10024 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10026 if (info
->executable
)
10028 if (!add_dynamic_entry (DT_DEBUG
, 0))
10032 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
10034 if (!add_dynamic_entry (DT_PLTGOT
, 0)
10035 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10036 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
10037 || !add_dynamic_entry (DT_JMPREL
, 0)
10038 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
10042 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
10044 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
10045 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
10049 tls_opt
= (!htab
->params
->no_tls_get_addr_opt
10050 && htab
->tls_get_addr_fd
!= NULL
10051 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10052 if (tls_opt
|| !htab
->opd_abi
)
10054 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10060 if (!add_dynamic_entry (DT_RELA
, 0)
10061 || !add_dynamic_entry (DT_RELASZ
, 0)
10062 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10065 /* If any dynamic relocs apply to a read-only section,
10066 then we need a DT_TEXTREL entry. */
10067 if ((info
->flags
& DF_TEXTREL
) == 0)
10068 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10070 if ((info
->flags
& DF_TEXTREL
) != 0)
10072 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10077 #undef add_dynamic_entry
10082 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10085 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10087 if (h
->plt
.plist
!= NULL
10089 && !h
->pointer_equality_needed
)
10092 return _bfd_elf_hash_symbol (h
);
10095 /* Determine the type of stub needed, if any, for a call. */
10097 static inline enum ppc_stub_type
10098 ppc_type_of_stub (asection
*input_sec
,
10099 const Elf_Internal_Rela
*rel
,
10100 struct ppc_link_hash_entry
**hash
,
10101 struct plt_entry
**plt_ent
,
10102 bfd_vma destination
,
10103 unsigned long local_off
)
10105 struct ppc_link_hash_entry
*h
= *hash
;
10107 bfd_vma branch_offset
;
10108 bfd_vma max_branch_offset
;
10109 enum elf_ppc64_reloc_type r_type
;
10113 struct plt_entry
*ent
;
10114 struct ppc_link_hash_entry
*fdh
= h
;
10116 && h
->oh
->is_func_descriptor
)
10118 fdh
= ppc_follow_link (h
->oh
);
10122 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10123 if (ent
->addend
== rel
->r_addend
10124 && ent
->plt
.offset
!= (bfd_vma
) -1)
10127 return ppc_stub_plt_call
;
10130 /* Here, we know we don't have a plt entry. If we don't have a
10131 either a defined function descriptor or a defined entry symbol
10132 in a regular object file, then it is pointless trying to make
10133 any other type of stub. */
10134 if (!is_static_defined (&fdh
->elf
)
10135 && !is_static_defined (&h
->elf
))
10136 return ppc_stub_none
;
10138 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10140 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10141 struct plt_entry
**local_plt
= (struct plt_entry
**)
10142 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10143 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10145 if (local_plt
[r_symndx
] != NULL
)
10147 struct plt_entry
*ent
;
10149 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10150 if (ent
->addend
== rel
->r_addend
10151 && ent
->plt
.offset
!= (bfd_vma
) -1)
10154 return ppc_stub_plt_call
;
10159 /* Determine where the call point is. */
10160 location
= (input_sec
->output_offset
10161 + input_sec
->output_section
->vma
10164 branch_offset
= destination
- location
;
10165 r_type
= ELF64_R_TYPE (rel
->r_info
);
10167 /* Determine if a long branch stub is needed. */
10168 max_branch_offset
= 1 << 25;
10169 if (r_type
!= R_PPC64_REL24
)
10170 max_branch_offset
= 1 << 15;
10172 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10173 /* We need a stub. Figure out whether a long_branch or plt_branch
10174 is needed later. */
10175 return ppc_stub_long_branch
;
10177 return ppc_stub_none
;
10180 /* With power7 weakly ordered memory model, it is possible for ld.so
10181 to update a plt entry in one thread and have another thread see a
10182 stale zero toc entry. To avoid this we need some sort of acquire
10183 barrier in the call stub. One solution is to make the load of the
10184 toc word seem to appear to depend on the load of the function entry
10185 word. Another solution is to test for r2 being zero, and branch to
10186 the appropriate glink entry if so.
10188 . fake dep barrier compare
10189 . ld 12,xxx(2) ld 12,xxx(2)
10190 . mtctr 12 mtctr 12
10191 . xor 11,12,12 ld 2,xxx+8(2)
10192 . add 2,2,11 cmpldi 2,0
10193 . ld 2,xxx+8(2) bnectr+
10194 . bctr b <glink_entry>
10196 The solution involving the compare turns out to be faster, so
10197 that's what we use unless the branch won't reach. */
10199 #define ALWAYS_USE_FAKE_DEP 0
10200 #define ALWAYS_EMIT_R2SAVE 0
10202 #define PPC_LO(v) ((v) & 0xffff)
10203 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10204 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10206 static inline unsigned int
10207 plt_stub_size (struct ppc_link_hash_table
*htab
,
10208 struct ppc_stub_hash_entry
*stub_entry
,
10211 unsigned size
= 12;
10213 if (ALWAYS_EMIT_R2SAVE
10214 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10216 if (PPC_HA (off
) != 0)
10221 if (htab
->params
->plt_static_chain
)
10223 if (htab
->params
->plt_thread_safe
10224 && htab
->elf
.dynamic_sections_created
10225 && stub_entry
->h
!= NULL
10226 && stub_entry
->h
->elf
.dynindx
!= -1)
10228 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10231 if (stub_entry
->h
!= NULL
10232 && (stub_entry
->h
== htab
->tls_get_addr_fd
10233 || stub_entry
->h
== htab
->tls_get_addr
)
10234 && !htab
->params
->no_tls_get_addr_opt
)
10239 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10240 then return the padding needed to do so. */
10241 static inline unsigned int
10242 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10243 struct ppc_stub_hash_entry
*stub_entry
,
10246 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10247 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10248 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
10250 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10251 > ((stub_size
- 1) & -stub_align
))
10252 return stub_align
- (stub_off
& (stub_align
- 1));
10256 /* Build a .plt call stub. */
10258 static inline bfd_byte
*
10259 build_plt_stub (struct ppc_link_hash_table
*htab
,
10260 struct ppc_stub_hash_entry
*stub_entry
,
10261 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10263 bfd
*obfd
= htab
->params
->stub_bfd
;
10264 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10265 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10266 bfd_boolean plt_thread_safe
= (htab
->params
->plt_thread_safe
10267 && htab
->elf
.dynamic_sections_created
10268 && stub_entry
->h
!= NULL
10269 && stub_entry
->h
->elf
.dynindx
!= -1);
10270 bfd_boolean use_fake_dep
= plt_thread_safe
;
10271 bfd_vma cmp_branch_off
= 0;
10273 if (!ALWAYS_USE_FAKE_DEP
10276 && !((stub_entry
->h
== htab
->tls_get_addr_fd
10277 || stub_entry
->h
== htab
->tls_get_addr
)
10278 && !htab
->params
->no_tls_get_addr_opt
))
10280 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10281 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10282 / PLT_ENTRY_SIZE (htab
));
10283 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10286 if (pltindex
> 32768)
10287 glinkoff
+= (pltindex
- 32768) * 4;
10289 + htab
->glink
->output_offset
10290 + htab
->glink
->output_section
->vma
);
10291 from
= (p
- stub_entry
->stub_sec
->contents
10292 + 4 * (ALWAYS_EMIT_R2SAVE
10293 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10294 + 4 * (PPC_HA (offset
) != 0)
10295 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10296 != PPC_HA (offset
))
10297 + 4 * (plt_static_chain
!= 0)
10299 + stub_entry
->stub_sec
->output_offset
10300 + stub_entry
->stub_sec
->output_section
->vma
);
10301 cmp_branch_off
= to
- from
;
10302 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10305 if (PPC_HA (offset
) != 0)
10309 if (ALWAYS_EMIT_R2SAVE
10310 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10311 r
[0].r_offset
+= 4;
10312 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10313 r
[1].r_offset
= r
[0].r_offset
+ 4;
10314 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10315 r
[1].r_addend
= r
[0].r_addend
;
10318 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10320 r
[2].r_offset
= r
[1].r_offset
+ 4;
10321 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10322 r
[2].r_addend
= r
[0].r_addend
;
10326 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10327 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10328 r
[2].r_addend
= r
[0].r_addend
+ 8;
10329 if (plt_static_chain
)
10331 r
[3].r_offset
= r
[2].r_offset
+ 4;
10332 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10333 r
[3].r_addend
= r
[0].r_addend
+ 16;
10338 if (ALWAYS_EMIT_R2SAVE
10339 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10340 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10343 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10344 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10348 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10349 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10352 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10354 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10357 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10362 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10363 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10365 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10366 if (plt_static_chain
)
10367 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10374 if (ALWAYS_EMIT_R2SAVE
10375 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10376 r
[0].r_offset
+= 4;
10377 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10380 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10382 r
[1].r_offset
= r
[0].r_offset
+ 4;
10383 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10384 r
[1].r_addend
= r
[0].r_addend
;
10388 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10389 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10390 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10391 if (plt_static_chain
)
10393 r
[2].r_offset
= r
[1].r_offset
+ 4;
10394 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10395 r
[2].r_addend
= r
[0].r_addend
+ 8;
10400 if (ALWAYS_EMIT_R2SAVE
10401 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10402 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10403 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10405 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10407 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10410 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10415 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10416 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10418 if (plt_static_chain
)
10419 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10420 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10423 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10425 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10426 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10427 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10430 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10434 /* Build a special .plt call stub for __tls_get_addr. */
10436 #define LD_R11_0R3 0xe9630000
10437 #define LD_R12_0R3 0xe9830000
10438 #define MR_R0_R3 0x7c601b78
10439 #define CMPDI_R11_0 0x2c2b0000
10440 #define ADD_R3_R12_R13 0x7c6c6a14
10441 #define BEQLR 0x4d820020
10442 #define MR_R3_R0 0x7c030378
10443 #define STD_R11_0R1 0xf9610000
10444 #define BCTRL 0x4e800421
10445 #define LD_R11_0R1 0xe9610000
10446 #define MTLR_R11 0x7d6803a6
10448 static inline bfd_byte
*
10449 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10450 struct ppc_stub_hash_entry
*stub_entry
,
10451 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10453 bfd
*obfd
= htab
->params
->stub_bfd
;
10455 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10456 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10457 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10458 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10459 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10460 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10461 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10462 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10463 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10466 r
[0].r_offset
+= 9 * 4;
10467 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10468 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10470 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10471 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10472 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10473 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10478 static Elf_Internal_Rela
*
10479 get_relocs (asection
*sec
, int count
)
10481 Elf_Internal_Rela
*relocs
;
10482 struct bfd_elf_section_data
*elfsec_data
;
10484 elfsec_data
= elf_section_data (sec
);
10485 relocs
= elfsec_data
->relocs
;
10486 if (relocs
== NULL
)
10488 bfd_size_type relsize
;
10489 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10490 relocs
= bfd_alloc (sec
->owner
, relsize
);
10491 if (relocs
== NULL
)
10493 elfsec_data
->relocs
= relocs
;
10494 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10495 sizeof (Elf_Internal_Shdr
));
10496 if (elfsec_data
->rela
.hdr
== NULL
)
10498 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10499 * sizeof (Elf64_External_Rela
));
10500 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10501 sec
->reloc_count
= 0;
10503 relocs
+= sec
->reloc_count
;
10504 sec
->reloc_count
+= count
;
10509 get_r2off (struct bfd_link_info
*info
,
10510 struct ppc_stub_hash_entry
*stub_entry
)
10512 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10513 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
10517 /* Support linking -R objects. Get the toc pointer from the
10520 if (!htab
->opd_abi
)
10522 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10523 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10525 if (strcmp (opd
->name
, ".opd") != 0
10526 || opd
->reloc_count
!= 0)
10528 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10529 stub_entry
->h
->elf
.root
.root
.string
);
10530 bfd_set_error (bfd_error_bad_value
);
10533 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10535 r2off
= bfd_get_64 (opd
->owner
, buf
);
10536 r2off
-= elf_gp (info
->output_bfd
);
10538 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
10543 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10545 struct ppc_stub_hash_entry
*stub_entry
;
10546 struct ppc_branch_hash_entry
*br_entry
;
10547 struct bfd_link_info
*info
;
10548 struct ppc_link_hash_table
*htab
;
10553 Elf_Internal_Rela
*r
;
10556 /* Massage our args to the form they really have. */
10557 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10560 htab
= ppc_hash_table (info
);
10564 /* Make a note of the offset within the stubs for this entry. */
10565 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10566 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10568 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10569 switch (stub_entry
->stub_type
)
10571 case ppc_stub_long_branch
:
10572 case ppc_stub_long_branch_r2off
:
10573 /* Branches are relative. This is where we are going to. */
10574 dest
= (stub_entry
->target_value
10575 + stub_entry
->target_section
->output_offset
10576 + stub_entry
->target_section
->output_section
->vma
);
10577 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10580 /* And this is where we are coming from. */
10581 off
-= (stub_entry
->stub_offset
10582 + stub_entry
->stub_sec
->output_offset
10583 + stub_entry
->stub_sec
->output_section
->vma
);
10586 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10588 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10592 htab
->stub_error
= TRUE
;
10595 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10598 if (PPC_HA (r2off
) != 0)
10601 bfd_put_32 (htab
->params
->stub_bfd
,
10602 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10605 bfd_put_32 (htab
->params
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10609 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10611 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10613 info
->callbacks
->einfo
10614 (_("%P: long branch stub `%s' offset overflow\n"),
10615 stub_entry
->root
.string
);
10616 htab
->stub_error
= TRUE
;
10620 if (info
->emitrelocations
)
10622 r
= get_relocs (stub_entry
->stub_sec
, 1);
10625 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10626 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10627 r
->r_addend
= dest
;
10628 if (stub_entry
->h
!= NULL
)
10630 struct elf_link_hash_entry
**hashes
;
10631 unsigned long symndx
;
10632 struct ppc_link_hash_entry
*h
;
10634 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10635 if (hashes
== NULL
)
10637 bfd_size_type hsize
;
10639 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10640 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10641 if (hashes
== NULL
)
10643 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10644 htab
->stub_globals
= 1;
10646 symndx
= htab
->stub_globals
++;
10648 hashes
[symndx
] = &h
->elf
;
10649 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10650 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10651 h
= ppc_follow_link (h
->oh
);
10652 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10653 /* H is an opd symbol. The addend must be zero. */
10657 off
= (h
->elf
.root
.u
.def
.value
10658 + h
->elf
.root
.u
.def
.section
->output_offset
10659 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10660 r
->r_addend
-= off
;
10666 case ppc_stub_plt_branch
:
10667 case ppc_stub_plt_branch_r2off
:
10668 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10669 stub_entry
->root
.string
+ 9,
10671 if (br_entry
== NULL
)
10673 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10674 stub_entry
->root
.string
);
10675 htab
->stub_error
= TRUE
;
10679 dest
= (stub_entry
->target_value
10680 + stub_entry
->target_section
->output_offset
10681 + stub_entry
->target_section
->output_section
->vma
);
10682 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10683 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10685 bfd_put_64 (htab
->brlt
->owner
, dest
,
10686 htab
->brlt
->contents
+ br_entry
->offset
);
10688 if (br_entry
->iter
== htab
->stub_iteration
)
10690 br_entry
->iter
= 0;
10692 if (htab
->relbrlt
!= NULL
)
10694 /* Create a reloc for the branch lookup table entry. */
10695 Elf_Internal_Rela rela
;
10698 rela
.r_offset
= (br_entry
->offset
10699 + htab
->brlt
->output_offset
10700 + htab
->brlt
->output_section
->vma
);
10701 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10702 rela
.r_addend
= dest
;
10704 rl
= htab
->relbrlt
->contents
;
10705 rl
+= (htab
->relbrlt
->reloc_count
++
10706 * sizeof (Elf64_External_Rela
));
10707 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10709 else if (info
->emitrelocations
)
10711 r
= get_relocs (htab
->brlt
, 1);
10714 /* brlt, being SEC_LINKER_CREATED does not go through the
10715 normal reloc processing. Symbols and offsets are not
10716 translated from input file to output file form, so
10717 set up the offset per the output file. */
10718 r
->r_offset
= (br_entry
->offset
10719 + htab
->brlt
->output_offset
10720 + htab
->brlt
->output_section
->vma
);
10721 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10722 r
->r_addend
= dest
;
10726 dest
= (br_entry
->offset
10727 + htab
->brlt
->output_offset
10728 + htab
->brlt
->output_section
->vma
);
10731 - elf_gp (htab
->brlt
->output_section
->owner
)
10732 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10734 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10736 info
->callbacks
->einfo
10737 (_("%P: linkage table error against `%T'\n"),
10738 stub_entry
->root
.string
);
10739 bfd_set_error (bfd_error_bad_value
);
10740 htab
->stub_error
= TRUE
;
10744 if (info
->emitrelocations
)
10746 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10749 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10750 if (bfd_big_endian (info
->output_bfd
))
10751 r
[0].r_offset
+= 2;
10752 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10753 r
[0].r_offset
+= 4;
10754 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10755 r
[0].r_addend
= dest
;
10756 if (PPC_HA (off
) != 0)
10758 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10759 r
[1].r_offset
= r
[0].r_offset
+ 4;
10760 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10761 r
[1].r_addend
= r
[0].r_addend
;
10765 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10767 if (PPC_HA (off
) != 0)
10770 bfd_put_32 (htab
->params
->stub_bfd
,
10771 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10773 bfd_put_32 (htab
->params
->stub_bfd
,
10774 LD_R12_0R12
| PPC_LO (off
), loc
);
10779 bfd_put_32 (htab
->params
->stub_bfd
,
10780 LD_R12_0R2
| PPC_LO (off
), loc
);
10785 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10787 if (r2off
== 0 && htab
->opd_abi
)
10789 htab
->stub_error
= TRUE
;
10793 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10796 if (PPC_HA (off
) != 0)
10799 bfd_put_32 (htab
->params
->stub_bfd
,
10800 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10802 bfd_put_32 (htab
->params
->stub_bfd
,
10803 LD_R12_0R12
| PPC_LO (off
), loc
);
10806 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10808 if (PPC_HA (r2off
) != 0)
10812 bfd_put_32 (htab
->params
->stub_bfd
,
10813 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10815 if (PPC_LO (r2off
) != 0)
10819 bfd_put_32 (htab
->params
->stub_bfd
,
10820 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10824 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10826 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10829 case ppc_stub_plt_call
:
10830 case ppc_stub_plt_call_r2save
:
10831 if (stub_entry
->h
!= NULL
10832 && stub_entry
->h
->is_func_descriptor
10833 && stub_entry
->h
->oh
!= NULL
)
10835 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10837 /* If the old-ABI "dot-symbol" is undefined make it weak so
10838 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10839 FIXME: We used to define the symbol on one of the call
10840 stubs instead, which is why we test symbol section id
10841 against htab->top_id in various places. Likely all
10842 these checks could now disappear. */
10843 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10844 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10845 /* Stop undo_symbol_twiddle changing it back to undefined. */
10846 fh
->was_undefined
= 0;
10849 /* Now build the stub. */
10850 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10851 if (dest
>= (bfd_vma
) -2)
10854 plt
= htab
->elf
.splt
;
10855 if (!htab
->elf
.dynamic_sections_created
10856 || stub_entry
->h
== NULL
10857 || stub_entry
->h
->elf
.dynindx
== -1)
10858 plt
= htab
->elf
.iplt
;
10860 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10862 if (stub_entry
->h
== NULL
10863 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10865 Elf_Internal_Rela rela
;
10868 rela
.r_offset
= dest
;
10870 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10872 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
10873 rela
.r_addend
= (stub_entry
->target_value
10874 + stub_entry
->target_section
->output_offset
10875 + stub_entry
->target_section
->output_section
->vma
);
10877 rl
= (htab
->elf
.irelplt
->contents
10878 + (htab
->elf
.irelplt
->reloc_count
++
10879 * sizeof (Elf64_External_Rela
)));
10880 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10881 stub_entry
->plt_ent
->plt
.offset
|= 1;
10885 - elf_gp (plt
->output_section
->owner
)
10886 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10888 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10890 info
->callbacks
->einfo
10891 (_("%P: linkage table error against `%T'\n"),
10892 stub_entry
->h
!= NULL
10893 ? stub_entry
->h
->elf
.root
.root
.string
10895 bfd_set_error (bfd_error_bad_value
);
10896 htab
->stub_error
= TRUE
;
10900 if (htab
->params
->plt_stub_align
!= 0)
10902 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10904 stub_entry
->stub_sec
->size
+= pad
;
10905 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10910 if (info
->emitrelocations
)
10912 r
= get_relocs (stub_entry
->stub_sec
,
10913 ((PPC_HA (off
) != 0)
10915 ? 2 + (htab
->params
->plt_static_chain
10916 && PPC_HA (off
+ 16) == PPC_HA (off
))
10920 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10921 if (bfd_big_endian (info
->output_bfd
))
10922 r
[0].r_offset
+= 2;
10923 r
[0].r_addend
= dest
;
10925 if (stub_entry
->h
!= NULL
10926 && (stub_entry
->h
== htab
->tls_get_addr_fd
10927 || stub_entry
->h
== htab
->tls_get_addr
)
10928 && !htab
->params
->no_tls_get_addr_opt
)
10929 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10931 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10940 stub_entry
->stub_sec
->size
+= size
;
10942 if (htab
->params
->emit_stub_syms
)
10944 struct elf_link_hash_entry
*h
;
10947 const char *const stub_str
[] = { "long_branch",
10948 "long_branch_r2off",
10950 "plt_branch_r2off",
10954 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10955 len2
= strlen (stub_entry
->root
.string
);
10956 name
= bfd_malloc (len1
+ len2
+ 2);
10959 memcpy (name
, stub_entry
->root
.string
, 9);
10960 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10961 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10962 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10965 if (h
->root
.type
== bfd_link_hash_new
)
10967 h
->root
.type
= bfd_link_hash_defined
;
10968 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10969 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10970 h
->ref_regular
= 1;
10971 h
->def_regular
= 1;
10972 h
->ref_regular_nonweak
= 1;
10973 h
->forced_local
= 1;
10975 h
->root
.linker_def
= 1;
10982 /* As above, but don't actually build the stub. Just bump offset so
10983 we know stub section sizes, and select plt_branch stubs where
10984 long_branch stubs won't do. */
10987 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10989 struct ppc_stub_hash_entry
*stub_entry
;
10990 struct bfd_link_info
*info
;
10991 struct ppc_link_hash_table
*htab
;
10995 /* Massage our args to the form they really have. */
10996 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10999 htab
= ppc_hash_table (info
);
11003 if (stub_entry
->stub_type
== ppc_stub_plt_call
11004 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
11007 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
11008 if (off
>= (bfd_vma
) -2)
11010 plt
= htab
->elf
.splt
;
11011 if (!htab
->elf
.dynamic_sections_created
11012 || stub_entry
->h
== NULL
11013 || stub_entry
->h
->elf
.dynindx
== -1)
11014 plt
= htab
->elf
.iplt
;
11015 off
+= (plt
->output_offset
11016 + plt
->output_section
->vma
11017 - elf_gp (plt
->output_section
->owner
)
11018 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
11020 size
= plt_stub_size (htab
, stub_entry
, off
);
11021 if (htab
->params
->plt_stub_align
)
11022 size
+= plt_stub_pad (htab
, stub_entry
, off
);
11023 if (info
->emitrelocations
)
11025 stub_entry
->stub_sec
->reloc_count
11026 += ((PPC_HA (off
) != 0)
11028 ? 2 + (htab
->params
->plt_static_chain
11029 && PPC_HA (off
+ 16) == PPC_HA (off
))
11031 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11036 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11039 bfd_vma local_off
= 0;
11041 off
= (stub_entry
->target_value
11042 + stub_entry
->target_section
->output_offset
11043 + stub_entry
->target_section
->output_section
->vma
);
11044 off
-= (stub_entry
->stub_sec
->size
11045 + stub_entry
->stub_sec
->output_offset
11046 + stub_entry
->stub_sec
->output_section
->vma
);
11048 /* Reset the stub type from the plt variant in case we now
11049 can reach with a shorter stub. */
11050 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
11051 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
11054 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
11056 r2off
= get_r2off (info
, stub_entry
);
11057 if (r2off
== 0 && htab
->opd_abi
)
11059 htab
->stub_error
= TRUE
;
11063 if (PPC_HA (r2off
) != 0)
11068 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11070 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11071 Do the same for -R objects without function descriptors. */
11072 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11073 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11076 struct ppc_branch_hash_entry
*br_entry
;
11078 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11079 stub_entry
->root
.string
+ 9,
11081 if (br_entry
== NULL
)
11083 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11084 stub_entry
->root
.string
);
11085 htab
->stub_error
= TRUE
;
11089 if (br_entry
->iter
!= htab
->stub_iteration
)
11091 br_entry
->iter
= htab
->stub_iteration
;
11092 br_entry
->offset
= htab
->brlt
->size
;
11093 htab
->brlt
->size
+= 8;
11095 if (htab
->relbrlt
!= NULL
)
11096 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11097 else if (info
->emitrelocations
)
11099 htab
->brlt
->reloc_count
+= 1;
11100 htab
->brlt
->flags
|= SEC_RELOC
;
11104 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11105 off
= (br_entry
->offset
11106 + htab
->brlt
->output_offset
11107 + htab
->brlt
->output_section
->vma
11108 - elf_gp (htab
->brlt
->output_section
->owner
)
11109 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
11111 if (info
->emitrelocations
)
11113 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
11114 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11117 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11120 if (PPC_HA (off
) != 0)
11126 if (PPC_HA (off
) != 0)
11129 if (PPC_HA (r2off
) != 0)
11131 if (PPC_LO (r2off
) != 0)
11135 else if (info
->emitrelocations
)
11137 stub_entry
->stub_sec
->reloc_count
+= 1;
11138 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11142 stub_entry
->stub_sec
->size
+= size
;
11146 /* Set up various things so that we can make a list of input sections
11147 for each output section included in the link. Returns -1 on error,
11148 0 when no stubs will be needed, and 1 on success. */
11151 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11154 int top_id
, top_index
, id
;
11156 asection
**input_list
;
11158 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11163 /* Find the top input section id. */
11164 for (input_bfd
= info
->input_bfds
, top_id
= 3;
11166 input_bfd
= input_bfd
->link
.next
)
11168 for (section
= input_bfd
->sections
;
11170 section
= section
->next
)
11172 if (top_id
< section
->id
)
11173 top_id
= section
->id
;
11177 htab
->top_id
= top_id
;
11178 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
11179 htab
->stub_group
= bfd_zmalloc (amt
);
11180 if (htab
->stub_group
== NULL
)
11183 /* Set toc_off for com, und, abs and ind sections. */
11184 for (id
= 0; id
< 3; id
++)
11185 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
11187 /* We can't use output_bfd->section_count here to find the top output
11188 section index as some sections may have been removed, and
11189 strip_excluded_output_sections doesn't renumber the indices. */
11190 for (section
= info
->output_bfd
->sections
, top_index
= 0;
11192 section
= section
->next
)
11194 if (top_index
< section
->index
)
11195 top_index
= section
->index
;
11198 htab
->top_index
= top_index
;
11199 amt
= sizeof (asection
*) * (top_index
+ 1);
11200 input_list
= bfd_zmalloc (amt
);
11201 htab
->input_list
= input_list
;
11202 if (input_list
== NULL
)
11208 /* Set up for first pass at multitoc partitioning. */
11211 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11213 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11215 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11216 htab
->toc_bfd
= NULL
;
11217 htab
->toc_first_sec
= NULL
;
11220 /* The linker repeatedly calls this function for each TOC input section
11221 and linker generated GOT section. Group input bfds such that the toc
11222 within a group is less than 64k in size. */
11225 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11227 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11228 bfd_vma addr
, off
, limit
;
11233 if (!htab
->second_toc_pass
)
11235 /* Keep track of the first .toc or .got section for this input bfd. */
11236 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11240 htab
->toc_bfd
= isec
->owner
;
11241 htab
->toc_first_sec
= isec
;
11244 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11245 off
= addr
- htab
->toc_curr
;
11246 limit
= 0x80008000;
11247 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11249 if (off
+ isec
->size
> limit
)
11251 addr
= (htab
->toc_first_sec
->output_offset
11252 + htab
->toc_first_sec
->output_section
->vma
);
11253 htab
->toc_curr
= addr
;
11256 /* toc_curr is the base address of this toc group. Set elf_gp
11257 for the input section to be the offset relative to the
11258 output toc base plus 0x8000. Making the input elf_gp an
11259 offset allows us to move the toc as a whole without
11260 recalculating input elf_gp. */
11261 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11262 off
+= TOC_BASE_OFF
;
11264 /* Die if someone uses a linker script that doesn't keep input
11265 file .toc and .got together. */
11267 && elf_gp (isec
->owner
) != 0
11268 && elf_gp (isec
->owner
) != off
)
11271 elf_gp (isec
->owner
) = off
;
11275 /* During the second pass toc_first_sec points to the start of
11276 a toc group, and toc_curr is used to track the old elf_gp.
11277 We use toc_bfd to ensure we only look at each bfd once. */
11278 if (htab
->toc_bfd
== isec
->owner
)
11280 htab
->toc_bfd
= isec
->owner
;
11282 if (htab
->toc_first_sec
== NULL
11283 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11285 htab
->toc_curr
= elf_gp (isec
->owner
);
11286 htab
->toc_first_sec
= isec
;
11288 addr
= (htab
->toc_first_sec
->output_offset
11289 + htab
->toc_first_sec
->output_section
->vma
);
11290 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11291 elf_gp (isec
->owner
) = off
;
11296 /* Called via elf_link_hash_traverse to merge GOT entries for global
11300 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11302 if (h
->root
.type
== bfd_link_hash_indirect
)
11305 merge_got_entries (&h
->got
.glist
);
11310 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11314 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11316 struct got_entry
*gent
;
11318 if (h
->root
.type
== bfd_link_hash_indirect
)
11321 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11322 if (!gent
->is_indirect
)
11323 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11327 /* Called on the first multitoc pass after the last call to
11328 ppc64_elf_next_toc_section. This function removes duplicate GOT
11332 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11334 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11335 struct bfd
*ibfd
, *ibfd2
;
11336 bfd_boolean done_something
;
11338 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11340 if (!htab
->do_multi_toc
)
11343 /* Merge global sym got entries within a toc group. */
11344 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11346 /* And tlsld_got. */
11347 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11349 struct got_entry
*ent
, *ent2
;
11351 if (!is_ppc64_elf (ibfd
))
11354 ent
= ppc64_tlsld_got (ibfd
);
11355 if (!ent
->is_indirect
11356 && ent
->got
.offset
!= (bfd_vma
) -1)
11358 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11360 if (!is_ppc64_elf (ibfd2
))
11363 ent2
= ppc64_tlsld_got (ibfd2
);
11364 if (!ent2
->is_indirect
11365 && ent2
->got
.offset
!= (bfd_vma
) -1
11366 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11368 ent2
->is_indirect
= TRUE
;
11369 ent2
->got
.ent
= ent
;
11375 /* Zap sizes of got sections. */
11376 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11377 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11378 htab
->got_reli_size
= 0;
11380 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11382 asection
*got
, *relgot
;
11384 if (!is_ppc64_elf (ibfd
))
11387 got
= ppc64_elf_tdata (ibfd
)->got
;
11390 got
->rawsize
= got
->size
;
11392 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11393 relgot
->rawsize
= relgot
->size
;
11398 /* Now reallocate the got, local syms first. We don't need to
11399 allocate section contents again since we never increase size. */
11400 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11402 struct got_entry
**lgot_ents
;
11403 struct got_entry
**end_lgot_ents
;
11404 struct plt_entry
**local_plt
;
11405 struct plt_entry
**end_local_plt
;
11406 unsigned char *lgot_masks
;
11407 bfd_size_type locsymcount
;
11408 Elf_Internal_Shdr
*symtab_hdr
;
11411 if (!is_ppc64_elf (ibfd
))
11414 lgot_ents
= elf_local_got_ents (ibfd
);
11418 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11419 locsymcount
= symtab_hdr
->sh_info
;
11420 end_lgot_ents
= lgot_ents
+ locsymcount
;
11421 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11422 end_local_plt
= local_plt
+ locsymcount
;
11423 lgot_masks
= (unsigned char *) end_local_plt
;
11424 s
= ppc64_elf_tdata (ibfd
)->got
;
11425 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11427 struct got_entry
*ent
;
11429 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11431 unsigned int ent_size
= 8;
11432 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11434 ent
->got
.offset
= s
->size
;
11435 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11440 s
->size
+= ent_size
;
11441 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11443 htab
->elf
.irelplt
->size
+= rel_size
;
11444 htab
->got_reli_size
+= rel_size
;
11446 else if (info
->shared
)
11448 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11449 srel
->size
+= rel_size
;
11455 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11457 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11459 struct got_entry
*ent
;
11461 if (!is_ppc64_elf (ibfd
))
11464 ent
= ppc64_tlsld_got (ibfd
);
11465 if (!ent
->is_indirect
11466 && ent
->got
.offset
!= (bfd_vma
) -1)
11468 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11469 ent
->got
.offset
= s
->size
;
11473 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11474 srel
->size
+= sizeof (Elf64_External_Rela
);
11479 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11480 if (!done_something
)
11481 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11485 if (!is_ppc64_elf (ibfd
))
11488 got
= ppc64_elf_tdata (ibfd
)->got
;
11491 done_something
= got
->rawsize
!= got
->size
;
11492 if (done_something
)
11497 if (done_something
)
11498 (*htab
->params
->layout_sections_again
) ();
11500 /* Set up for second pass over toc sections to recalculate elf_gp
11501 on input sections. */
11502 htab
->toc_bfd
= NULL
;
11503 htab
->toc_first_sec
= NULL
;
11504 htab
->second_toc_pass
= TRUE
;
11505 return done_something
;
11508 /* Called after second pass of multitoc partitioning. */
11511 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11513 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11515 /* After the second pass, toc_curr tracks the TOC offset used
11516 for code sections below in ppc64_elf_next_input_section. */
11517 htab
->toc_curr
= TOC_BASE_OFF
;
11520 /* No toc references were found in ISEC. If the code in ISEC makes no
11521 calls, then there's no need to use toc adjusting stubs when branching
11522 into ISEC. Actually, indirect calls from ISEC are OK as they will
11523 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11524 needed, and 2 if a cyclical call-graph was found but no other reason
11525 for a stub was detected. If called from the top level, a return of
11526 2 means the same as a return of 0. */
11529 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11533 /* Mark this section as checked. */
11534 isec
->call_check_done
= 1;
11536 /* We know none of our code bearing sections will need toc stubs. */
11537 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11540 if (isec
->size
== 0)
11543 if (isec
->output_section
== NULL
)
11547 if (isec
->reloc_count
!= 0)
11549 Elf_Internal_Rela
*relstart
, *rel
;
11550 Elf_Internal_Sym
*local_syms
;
11551 struct ppc_link_hash_table
*htab
;
11553 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11554 info
->keep_memory
);
11555 if (relstart
== NULL
)
11558 /* Look for branches to outside of this section. */
11560 htab
= ppc_hash_table (info
);
11564 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11566 enum elf_ppc64_reloc_type r_type
;
11567 unsigned long r_symndx
;
11568 struct elf_link_hash_entry
*h
;
11569 struct ppc_link_hash_entry
*eh
;
11570 Elf_Internal_Sym
*sym
;
11572 struct _opd_sec_data
*opd
;
11576 r_type
= ELF64_R_TYPE (rel
->r_info
);
11577 if (r_type
!= R_PPC64_REL24
11578 && r_type
!= R_PPC64_REL14
11579 && r_type
!= R_PPC64_REL14_BRTAKEN
11580 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11583 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11584 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11591 /* Calls to dynamic lib functions go through a plt call stub
11593 eh
= (struct ppc_link_hash_entry
*) h
;
11595 && (eh
->elf
.plt
.plist
!= NULL
11597 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11603 if (sym_sec
== NULL
)
11604 /* Ignore other undefined symbols. */
11607 /* Assume branches to other sections not included in the
11608 link need stubs too, to cover -R and absolute syms. */
11609 if (sym_sec
->output_section
== NULL
)
11616 sym_value
= sym
->st_value
;
11619 if (h
->root
.type
!= bfd_link_hash_defined
11620 && h
->root
.type
!= bfd_link_hash_defweak
)
11622 sym_value
= h
->root
.u
.def
.value
;
11624 sym_value
+= rel
->r_addend
;
11626 /* If this branch reloc uses an opd sym, find the code section. */
11627 opd
= get_opd_info (sym_sec
);
11630 if (h
== NULL
&& opd
->adjust
!= NULL
)
11634 adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
)];
11636 /* Assume deleted functions won't ever be called. */
11638 sym_value
+= adjust
;
11641 dest
= opd_entry_value (sym_sec
, sym_value
,
11642 &sym_sec
, NULL
, FALSE
);
11643 if (dest
== (bfd_vma
) -1)
11648 + sym_sec
->output_offset
11649 + sym_sec
->output_section
->vma
);
11651 /* Ignore branch to self. */
11652 if (sym_sec
== isec
)
11655 /* If the called function uses the toc, we need a stub. */
11656 if (sym_sec
->has_toc_reloc
11657 || sym_sec
->makes_toc_func_call
)
11663 /* Assume any branch that needs a long branch stub might in fact
11664 need a plt_branch stub. A plt_branch stub uses r2. */
11665 else if (dest
- (isec
->output_offset
11666 + isec
->output_section
->vma
11667 + rel
->r_offset
) + (1 << 25)
11668 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11676 /* If calling back to a section in the process of being
11677 tested, we can't say for sure that no toc adjusting stubs
11678 are needed, so don't return zero. */
11679 else if (sym_sec
->call_check_in_progress
)
11682 /* Branches to another section that itself doesn't have any TOC
11683 references are OK. Recursively call ourselves to check. */
11684 else if (!sym_sec
->call_check_done
)
11688 /* Mark current section as indeterminate, so that other
11689 sections that call back to current won't be marked as
11691 isec
->call_check_in_progress
= 1;
11692 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11693 isec
->call_check_in_progress
= 0;
11704 if (local_syms
!= NULL
11705 && (elf_symtab_hdr (isec
->owner
).contents
11706 != (unsigned char *) local_syms
))
11708 if (elf_section_data (isec
)->relocs
!= relstart
)
11713 && isec
->map_head
.s
!= NULL
11714 && (strcmp (isec
->output_section
->name
, ".init") == 0
11715 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11717 if (isec
->map_head
.s
->has_toc_reloc
11718 || isec
->map_head
.s
->makes_toc_func_call
)
11720 else if (!isec
->map_head
.s
->call_check_done
)
11723 isec
->call_check_in_progress
= 1;
11724 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11725 isec
->call_check_in_progress
= 0;
11732 isec
->makes_toc_func_call
= 1;
11737 /* The linker repeatedly calls this function for each input section,
11738 in the order that input sections are linked into output sections.
11739 Build lists of input sections to determine groupings between which
11740 we may insert linker stubs. */
11743 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11745 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11750 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11751 && isec
->output_section
->index
<= htab
->top_index
)
11753 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11754 /* Steal the link_sec pointer for our list. */
11755 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11756 /* This happens to make the list in reverse order,
11757 which is what we want. */
11758 PREV_SEC (isec
) = *list
;
11762 if (htab
->multi_toc_needed
)
11764 /* Analyse sections that aren't already flagged as needing a
11765 valid toc pointer. Exclude .fixup for the linux kernel.
11766 .fixup contains branches, but only back to the function that
11767 hit an exception. */
11768 if (!(isec
->has_toc_reloc
11769 || (isec
->flags
& SEC_CODE
) == 0
11770 || strcmp (isec
->name
, ".fixup") == 0
11771 || isec
->call_check_done
))
11773 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11776 /* Make all sections use the TOC assigned for this object file.
11777 This will be wrong for pasted sections; We fix that in
11778 check_pasted_section(). */
11779 if (elf_gp (isec
->owner
) != 0)
11780 htab
->toc_curr
= elf_gp (isec
->owner
);
11783 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11787 /* Check that all .init and .fini sections use the same toc, if they
11788 have toc relocs. */
11791 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11793 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11797 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11798 bfd_vma toc_off
= 0;
11801 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11802 if (i
->has_toc_reloc
)
11805 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11806 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11811 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11812 if (i
->makes_toc_func_call
)
11814 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11818 /* Make sure the whole pasted function uses the same toc offset. */
11820 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11821 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11827 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11829 return (check_pasted_section (info
, ".init")
11830 & check_pasted_section (info
, ".fini"));
11833 /* See whether we can group stub sections together. Grouping stub
11834 sections may result in fewer stubs. More importantly, we need to
11835 put all .init* and .fini* stubs at the beginning of the .init or
11836 .fini output sections respectively, because glibc splits the
11837 _init and _fini functions into multiple parts. Putting a stub in
11838 the middle of a function is not a good idea. */
11841 group_sections (struct ppc_link_hash_table
*htab
,
11842 bfd_size_type stub_group_size
,
11843 bfd_boolean stubs_always_before_branch
)
11846 bfd_size_type stub14_group_size
;
11847 bfd_boolean suppress_size_errors
;
11849 suppress_size_errors
= FALSE
;
11850 stub14_group_size
= stub_group_size
>> 10;
11851 if (stub_group_size
== 1)
11853 /* Default values. */
11854 if (stubs_always_before_branch
)
11856 stub_group_size
= 0x1e00000;
11857 stub14_group_size
= 0x7800;
11861 stub_group_size
= 0x1c00000;
11862 stub14_group_size
= 0x7000;
11864 suppress_size_errors
= TRUE
;
11867 list
= htab
->input_list
+ htab
->top_index
;
11870 asection
*tail
= *list
;
11871 while (tail
!= NULL
)
11875 bfd_size_type total
;
11876 bfd_boolean big_sec
;
11880 total
= tail
->size
;
11881 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11882 && ppc64_elf_section_data (tail
)->has_14bit_branch
11883 ? stub14_group_size
: stub_group_size
);
11884 if (big_sec
&& !suppress_size_errors
)
11885 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11886 tail
->owner
, tail
);
11887 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11889 while ((prev
= PREV_SEC (curr
)) != NULL
11890 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11891 < (ppc64_elf_section_data (prev
) != NULL
11892 && ppc64_elf_section_data (prev
)->has_14bit_branch
11893 ? stub14_group_size
: stub_group_size
))
11894 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11897 /* OK, the size from the start of CURR to the end is less
11898 than stub_group_size and thus can be handled by one stub
11899 section. (or the tail section is itself larger than
11900 stub_group_size, in which case we may be toast.) We
11901 should really be keeping track of the total size of stubs
11902 added here, as stubs contribute to the final output
11903 section size. That's a little tricky, and this way will
11904 only break if stubs added make the total size more than
11905 2^25, ie. for the default stub_group_size, if stubs total
11906 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11909 prev
= PREV_SEC (tail
);
11910 /* Set up this stub group. */
11911 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11913 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11915 /* But wait, there's more! Input sections up to stub_group_size
11916 bytes before the stub section can be handled by it too.
11917 Don't do this if we have a really large section after the
11918 stubs, as adding more stubs increases the chance that
11919 branches may not reach into the stub section. */
11920 if (!stubs_always_before_branch
&& !big_sec
)
11923 while (prev
!= NULL
11924 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11925 < (ppc64_elf_section_data (prev
) != NULL
11926 && ppc64_elf_section_data (prev
)->has_14bit_branch
11927 ? stub14_group_size
: stub_group_size
))
11928 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11931 prev
= PREV_SEC (tail
);
11932 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11938 while (list
-- != htab
->input_list
);
11939 free (htab
->input_list
);
11943 static const unsigned char glink_eh_frame_cie
[] =
11945 0, 0, 0, 16, /* length. */
11946 0, 0, 0, 0, /* id. */
11947 1, /* CIE version. */
11948 'z', 'R', 0, /* Augmentation string. */
11949 4, /* Code alignment. */
11950 0x78, /* Data alignment. */
11952 1, /* Augmentation size. */
11953 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11954 DW_CFA_def_cfa
, 1, 0, /* def_cfa: r1 offset 0. */
11958 /* Stripping output sections is normally done before dynamic section
11959 symbols have been allocated. This function is called later, and
11960 handles cases like htab->brlt which is mapped to its own output
11964 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11966 if (isec
->size
== 0
11967 && isec
->output_section
->size
== 0
11968 && !(isec
->output_section
->flags
& SEC_KEEP
)
11969 && !bfd_section_removed_from_list (info
->output_bfd
,
11970 isec
->output_section
)
11971 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11973 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11974 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11975 info
->output_bfd
->section_count
--;
11979 /* Determine and set the size of the stub section for a final link.
11981 The basic idea here is to examine all the relocations looking for
11982 PC-relative calls to a target that is unreachable with a "bl"
11986 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
11988 bfd_size_type stub_group_size
;
11989 bfd_boolean stubs_always_before_branch
;
11990 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11995 if (htab
->params
->plt_thread_safe
== -1 && !info
->executable
)
11996 htab
->params
->plt_thread_safe
= 1;
11997 if (!htab
->opd_abi
)
11998 htab
->params
->plt_thread_safe
= 0;
11999 else if (htab
->params
->plt_thread_safe
== -1)
12001 static const char *const thread_starter
[] =
12005 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12007 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12008 "mq_notify", "create_timer",
12013 "GOMP_parallel_start",
12014 "GOMP_parallel_loop_static",
12015 "GOMP_parallel_loop_static_start",
12016 "GOMP_parallel_loop_dynamic",
12017 "GOMP_parallel_loop_dynamic_start",
12018 "GOMP_parallel_loop_guided",
12019 "GOMP_parallel_loop_guided_start",
12020 "GOMP_parallel_loop_runtime",
12021 "GOMP_parallel_loop_runtime_start",
12022 "GOMP_parallel_sections",
12023 "GOMP_parallel_sections_start",
12029 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
12031 struct elf_link_hash_entry
*h
;
12032 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
12033 FALSE
, FALSE
, TRUE
);
12034 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
12035 if (htab
->params
->plt_thread_safe
)
12039 stubs_always_before_branch
= htab
->params
->group_size
< 0;
12040 if (htab
->params
->group_size
< 0)
12041 stub_group_size
= -htab
->params
->group_size
;
12043 stub_group_size
= htab
->params
->group_size
;
12045 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
12050 unsigned int bfd_indx
;
12051 asection
*stub_sec
;
12053 htab
->stub_iteration
+= 1;
12055 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
12057 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
12059 Elf_Internal_Shdr
*symtab_hdr
;
12061 Elf_Internal_Sym
*local_syms
= NULL
;
12063 if (!is_ppc64_elf (input_bfd
))
12066 /* We'll need the symbol table in a second. */
12067 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12068 if (symtab_hdr
->sh_info
== 0)
12071 /* Walk over each section attached to the input bfd. */
12072 for (section
= input_bfd
->sections
;
12074 section
= section
->next
)
12076 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12078 /* If there aren't any relocs, then there's nothing more
12080 if ((section
->flags
& SEC_RELOC
) == 0
12081 || (section
->flags
& SEC_ALLOC
) == 0
12082 || (section
->flags
& SEC_LOAD
) == 0
12083 || (section
->flags
& SEC_CODE
) == 0
12084 || section
->reloc_count
== 0)
12087 /* If this section is a link-once section that will be
12088 discarded, then don't create any stubs. */
12089 if (section
->output_section
== NULL
12090 || section
->output_section
->owner
!= info
->output_bfd
)
12093 /* Get the relocs. */
12095 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12096 info
->keep_memory
);
12097 if (internal_relocs
== NULL
)
12098 goto error_ret_free_local
;
12100 /* Now examine each relocation. */
12101 irela
= internal_relocs
;
12102 irelaend
= irela
+ section
->reloc_count
;
12103 for (; irela
< irelaend
; irela
++)
12105 enum elf_ppc64_reloc_type r_type
;
12106 unsigned int r_indx
;
12107 enum ppc_stub_type stub_type
;
12108 struct ppc_stub_hash_entry
*stub_entry
;
12109 asection
*sym_sec
, *code_sec
;
12110 bfd_vma sym_value
, code_value
;
12111 bfd_vma destination
;
12112 unsigned long local_off
;
12113 bfd_boolean ok_dest
;
12114 struct ppc_link_hash_entry
*hash
;
12115 struct ppc_link_hash_entry
*fdh
;
12116 struct elf_link_hash_entry
*h
;
12117 Elf_Internal_Sym
*sym
;
12119 const asection
*id_sec
;
12120 struct _opd_sec_data
*opd
;
12121 struct plt_entry
*plt_ent
;
12123 r_type
= ELF64_R_TYPE (irela
->r_info
);
12124 r_indx
= ELF64_R_SYM (irela
->r_info
);
12126 if (r_type
>= R_PPC64_max
)
12128 bfd_set_error (bfd_error_bad_value
);
12129 goto error_ret_free_internal
;
12132 /* Only look for stubs on branch instructions. */
12133 if (r_type
!= R_PPC64_REL24
12134 && r_type
!= R_PPC64_REL14
12135 && r_type
!= R_PPC64_REL14_BRTAKEN
12136 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12139 /* Now determine the call target, its name, value,
12141 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12142 r_indx
, input_bfd
))
12143 goto error_ret_free_internal
;
12144 hash
= (struct ppc_link_hash_entry
*) h
;
12151 sym_value
= sym
->st_value
;
12154 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12155 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12157 sym_value
= hash
->elf
.root
.u
.def
.value
;
12158 if (sym_sec
->output_section
!= NULL
)
12161 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12162 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12164 /* Recognise an old ABI func code entry sym, and
12165 use the func descriptor sym instead if it is
12167 if (hash
->elf
.root
.root
.string
[0] == '.'
12168 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12170 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12171 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12173 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12174 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12175 if (sym_sec
->output_section
!= NULL
)
12184 bfd_set_error (bfd_error_bad_value
);
12185 goto error_ret_free_internal
;
12192 sym_value
+= irela
->r_addend
;
12193 destination
= (sym_value
12194 + sym_sec
->output_offset
12195 + sym_sec
->output_section
->vma
);
12196 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12201 code_sec
= sym_sec
;
12202 code_value
= sym_value
;
12203 opd
= get_opd_info (sym_sec
);
12208 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12210 long adjust
= opd
->adjust
[OPD_NDX (sym_value
)];
12213 code_value
+= adjust
;
12214 sym_value
+= adjust
;
12216 dest
= opd_entry_value (sym_sec
, sym_value
,
12217 &code_sec
, &code_value
, FALSE
);
12218 if (dest
!= (bfd_vma
) -1)
12220 destination
= dest
;
12223 /* Fixup old ABI sym to point at code
12225 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12226 hash
->elf
.root
.u
.def
.section
= code_sec
;
12227 hash
->elf
.root
.u
.def
.value
= code_value
;
12232 /* Determine what (if any) linker stub is needed. */
12234 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12235 &plt_ent
, destination
,
12238 if (stub_type
!= ppc_stub_plt_call
)
12240 /* Check whether we need a TOC adjusting stub.
12241 Since the linker pastes together pieces from
12242 different object files when creating the
12243 _init and _fini functions, it may be that a
12244 call to what looks like a local sym is in
12245 fact a call needing a TOC adjustment. */
12246 if (code_sec
!= NULL
12247 && code_sec
->output_section
!= NULL
12248 && (htab
->stub_group
[code_sec
->id
].toc_off
12249 != htab
->stub_group
[section
->id
].toc_off
)
12250 && (code_sec
->has_toc_reloc
12251 || code_sec
->makes_toc_func_call
))
12252 stub_type
= ppc_stub_long_branch_r2off
;
12255 if (stub_type
== ppc_stub_none
)
12258 /* __tls_get_addr calls might be eliminated. */
12259 if (stub_type
!= ppc_stub_plt_call
12261 && (hash
== htab
->tls_get_addr
12262 || hash
== htab
->tls_get_addr_fd
)
12263 && section
->has_tls_reloc
12264 && irela
!= internal_relocs
)
12266 /* Get tls info. */
12267 unsigned char *tls_mask
;
12269 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12270 irela
- 1, input_bfd
))
12271 goto error_ret_free_internal
;
12272 if (*tls_mask
!= 0)
12276 if (stub_type
== ppc_stub_plt_call
12277 && irela
+ 1 < irelaend
12278 && irela
[1].r_offset
== irela
->r_offset
+ 4
12279 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12281 if (!tocsave_find (htab
, INSERT
,
12282 &local_syms
, irela
+ 1, input_bfd
))
12283 goto error_ret_free_internal
;
12285 else if (stub_type
== ppc_stub_plt_call
)
12286 stub_type
= ppc_stub_plt_call_r2save
;
12288 /* Support for grouping stub sections. */
12289 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
12291 /* Get the name of this stub. */
12292 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12294 goto error_ret_free_internal
;
12296 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12297 stub_name
, FALSE
, FALSE
);
12298 if (stub_entry
!= NULL
)
12300 /* The proper stub has already been created. */
12302 if (stub_type
== ppc_stub_plt_call_r2save
)
12303 stub_entry
->stub_type
= stub_type
;
12307 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12308 if (stub_entry
== NULL
)
12311 error_ret_free_internal
:
12312 if (elf_section_data (section
)->relocs
== NULL
)
12313 free (internal_relocs
);
12314 error_ret_free_local
:
12315 if (local_syms
!= NULL
12316 && (symtab_hdr
->contents
12317 != (unsigned char *) local_syms
))
12322 stub_entry
->stub_type
= stub_type
;
12323 if (stub_type
!= ppc_stub_plt_call
12324 && stub_type
!= ppc_stub_plt_call_r2save
)
12326 stub_entry
->target_value
= code_value
;
12327 stub_entry
->target_section
= code_sec
;
12331 stub_entry
->target_value
= sym_value
;
12332 stub_entry
->target_section
= sym_sec
;
12334 stub_entry
->h
= hash
;
12335 stub_entry
->plt_ent
= plt_ent
;
12336 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12338 if (stub_entry
->h
!= NULL
)
12339 htab
->stub_globals
+= 1;
12342 /* We're done with the internal relocs, free them. */
12343 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12344 free (internal_relocs
);
12347 if (local_syms
!= NULL
12348 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12350 if (!info
->keep_memory
)
12353 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12357 /* We may have added some stubs. Find out the new size of the
12359 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12361 stub_sec
= stub_sec
->next
)
12362 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12364 stub_sec
->rawsize
= stub_sec
->size
;
12365 stub_sec
->size
= 0;
12366 stub_sec
->reloc_count
= 0;
12367 stub_sec
->flags
&= ~SEC_RELOC
;
12370 htab
->brlt
->size
= 0;
12371 htab
->brlt
->reloc_count
= 0;
12372 htab
->brlt
->flags
&= ~SEC_RELOC
;
12373 if (htab
->relbrlt
!= NULL
)
12374 htab
->relbrlt
->size
= 0;
12376 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12378 if (info
->emitrelocations
12379 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12381 htab
->glink
->reloc_count
= 1;
12382 htab
->glink
->flags
|= SEC_RELOC
;
12385 if (htab
->glink_eh_frame
!= NULL
12386 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12387 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12389 size_t size
= 0, align
;
12391 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12393 stub_sec
= stub_sec
->next
)
12394 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12396 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12399 size
+= sizeof (glink_eh_frame_cie
);
12401 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12403 size
= (size
+ align
) & ~align
;
12404 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12405 htab
->glink_eh_frame
->size
= size
;
12408 if (htab
->params
->plt_stub_align
!= 0)
12409 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12411 stub_sec
= stub_sec
->next
)
12412 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12413 stub_sec
->size
= ((stub_sec
->size
12414 + (1 << htab
->params
->plt_stub_align
) - 1)
12415 & (-1 << htab
->params
->plt_stub_align
));
12417 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12419 stub_sec
= stub_sec
->next
)
12420 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12421 && stub_sec
->rawsize
!= stub_sec
->size
)
12424 /* Exit from this loop when no stubs have been added, and no stubs
12425 have changed size. */
12426 if (stub_sec
== NULL
12427 && (htab
->glink_eh_frame
== NULL
12428 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12431 /* Ask the linker to do its stuff. */
12432 (*htab
->params
->layout_sections_again
) ();
12435 if (htab
->glink_eh_frame
!= NULL
12436 && htab
->glink_eh_frame
->size
!= 0)
12439 bfd_byte
*p
, *last_fde
;
12440 size_t last_fde_len
, size
, align
, pad
;
12441 asection
*stub_sec
;
12443 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12446 htab
->glink_eh_frame
->contents
= p
;
12449 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12450 /* CIE length (rewrite in case little-endian). */
12451 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12452 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12453 p
+= sizeof (glink_eh_frame_cie
);
12455 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12457 stub_sec
= stub_sec
->next
)
12458 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12463 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12466 val
= p
- htab
->glink_eh_frame
->contents
;
12467 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12469 /* Offset to stub section, written later. */
12471 /* stub section size. */
12472 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->size
, p
);
12474 /* Augmentation. */
12479 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12484 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12487 val
= p
- htab
->glink_eh_frame
->contents
;
12488 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12490 /* Offset to .glink, written later. */
12493 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12495 /* Augmentation. */
12498 *p
++ = DW_CFA_advance_loc
+ 1;
12499 *p
++ = DW_CFA_register
;
12502 *p
++ = DW_CFA_advance_loc
+ 4;
12503 *p
++ = DW_CFA_restore_extended
;
12506 /* Subsume any padding into the last FDE if user .eh_frame
12507 sections are aligned more than glink_eh_frame. Otherwise any
12508 zero padding will be seen as a terminator. */
12509 size
= p
- htab
->glink_eh_frame
->contents
;
12511 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12513 pad
= ((size
+ align
) & ~align
) - size
;
12514 htab
->glink_eh_frame
->size
= size
+ pad
;
12515 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12518 maybe_strip_output (info
, htab
->brlt
);
12519 if (htab
->glink_eh_frame
!= NULL
)
12520 maybe_strip_output (info
, htab
->glink_eh_frame
);
12525 /* Called after we have determined section placement. If sections
12526 move, we'll be called again. Provide a value for TOCstart. */
12529 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12534 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12535 order. The TOC starts where the first of these sections starts. */
12536 s
= bfd_get_section_by_name (obfd
, ".got");
12537 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12538 s
= bfd_get_section_by_name (obfd
, ".toc");
12539 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12540 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12541 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12542 s
= bfd_get_section_by_name (obfd
, ".plt");
12543 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12545 /* This may happen for
12546 o references to TOC base (SYM@toc / TOC[tc0]) without a
12548 o bad linker script
12549 o --gc-sections and empty TOC sections
12551 FIXME: Warn user? */
12553 /* Look for a likely section. We probably won't even be
12555 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12556 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12558 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12561 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12562 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12563 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12566 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12567 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12571 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12572 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12578 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12580 _bfd_set_gp_value (obfd
, TOCstart
);
12582 if (info
!= NULL
&& s
!= NULL
)
12584 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12588 if (htab
->elf
.hgot
!= NULL
)
12590 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
12591 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12596 struct bfd_link_hash_entry
*bh
= NULL
;
12597 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12598 s
, TOC_BASE_OFF
, NULL
, FALSE
,
12605 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12606 write out any global entry stubs. */
12609 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12611 struct bfd_link_info
*info
;
12612 struct ppc_link_hash_table
*htab
;
12613 struct plt_entry
*pent
;
12616 if (h
->root
.type
== bfd_link_hash_indirect
)
12619 if (!h
->pointer_equality_needed
)
12622 if (h
->def_regular
)
12626 htab
= ppc_hash_table (info
);
12631 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12632 if (pent
->plt
.offset
!= (bfd_vma
) -1
12633 && pent
->addend
== 0)
12639 p
= s
->contents
+ h
->root
.u
.def
.value
;
12640 plt
= htab
->elf
.splt
;
12641 if (!htab
->elf
.dynamic_sections_created
12642 || h
->dynindx
== -1)
12643 plt
= htab
->elf
.iplt
;
12644 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12645 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12647 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12649 info
->callbacks
->einfo
12650 (_("%P: linkage table error against `%T'\n"),
12651 h
->root
.root
.string
);
12652 bfd_set_error (bfd_error_bad_value
);
12653 htab
->stub_error
= TRUE
;
12656 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12657 if (htab
->params
->emit_stub_syms
)
12659 size_t len
= strlen (h
->root
.root
.string
);
12660 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12665 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12666 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12669 if (h
->root
.type
== bfd_link_hash_new
)
12671 h
->root
.type
= bfd_link_hash_defined
;
12672 h
->root
.u
.def
.section
= s
;
12673 h
->root
.u
.def
.value
= p
- s
->contents
;
12674 h
->ref_regular
= 1;
12675 h
->def_regular
= 1;
12676 h
->ref_regular_nonweak
= 1;
12677 h
->forced_local
= 1;
12679 h
->root
.linker_def
= 1;
12683 if (PPC_HA (off
) != 0)
12685 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12688 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12690 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12692 bfd_put_32 (s
->owner
, BCTR
, p
);
12698 /* Build all the stubs associated with the current output file.
12699 The stubs are kept in a hash table attached to the main linker
12700 hash table. This function is called via gldelf64ppc_finish. */
12703 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12706 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12707 asection
*stub_sec
;
12709 int stub_sec_count
= 0;
12714 /* Allocate memory to hold the linker stubs. */
12715 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12717 stub_sec
= stub_sec
->next
)
12718 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12719 && stub_sec
->size
!= 0)
12721 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12722 if (stub_sec
->contents
== NULL
)
12724 /* We want to check that built size is the same as calculated
12725 size. rawsize is a convenient location to use. */
12726 stub_sec
->rawsize
= stub_sec
->size
;
12727 stub_sec
->size
= 0;
12730 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12735 /* Build the .glink plt call stub. */
12736 if (htab
->params
->emit_stub_syms
)
12738 struct elf_link_hash_entry
*h
;
12739 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12740 TRUE
, FALSE
, FALSE
);
12743 if (h
->root
.type
== bfd_link_hash_new
)
12745 h
->root
.type
= bfd_link_hash_defined
;
12746 h
->root
.u
.def
.section
= htab
->glink
;
12747 h
->root
.u
.def
.value
= 8;
12748 h
->ref_regular
= 1;
12749 h
->def_regular
= 1;
12750 h
->ref_regular_nonweak
= 1;
12751 h
->forced_local
= 1;
12753 h
->root
.linker_def
= 1;
12756 plt0
= (htab
->elf
.splt
->output_section
->vma
12757 + htab
->elf
.splt
->output_offset
12759 if (info
->emitrelocations
)
12761 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12764 r
->r_offset
= (htab
->glink
->output_offset
12765 + htab
->glink
->output_section
->vma
);
12766 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12767 r
->r_addend
= plt0
;
12769 p
= htab
->glink
->contents
;
12770 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12771 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12775 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12777 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12779 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12781 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12783 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12785 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12787 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12789 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12791 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12793 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12798 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12800 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12802 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12804 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12806 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12808 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
12810 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12812 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
12814 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12816 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
12818 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12820 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
12823 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12825 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12827 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12831 /* Build the .glink lazy link call stubs. */
12833 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
12839 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12844 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12846 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
12851 bfd_put_32 (htab
->glink
->owner
,
12852 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12857 /* Build .glink global entry stubs. */
12858 if (htab
->glink
->size
> htab
->glink
->rawsize
)
12859 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
12862 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
12864 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12866 if (htab
->brlt
->contents
== NULL
)
12869 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12871 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12872 htab
->relbrlt
->size
);
12873 if (htab
->relbrlt
->contents
== NULL
)
12877 /* Build the stubs as directed by the stub hash table. */
12878 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12880 if (htab
->relbrlt
!= NULL
)
12881 htab
->relbrlt
->reloc_count
= 0;
12883 if (htab
->params
->plt_stub_align
!= 0)
12884 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12886 stub_sec
= stub_sec
->next
)
12887 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12888 stub_sec
->size
= ((stub_sec
->size
12889 + (1 << htab
->params
->plt_stub_align
) - 1)
12890 & (-1 << htab
->params
->plt_stub_align
));
12892 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12894 stub_sec
= stub_sec
->next
)
12895 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12897 stub_sec_count
+= 1;
12898 if (stub_sec
->rawsize
!= stub_sec
->size
)
12902 /* Note that the glink_eh_frame check here is not only testing that
12903 the generated size matched the calculated size but also that
12904 bfd_elf_discard_info didn't make any changes to the section. */
12905 if (stub_sec
!= NULL
12906 || (htab
->glink_eh_frame
!= NULL
12907 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12909 htab
->stub_error
= TRUE
;
12910 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12913 if (htab
->stub_error
)
12918 *stats
= bfd_malloc (500);
12919 if (*stats
== NULL
)
12922 sprintf (*stats
, _("linker stubs in %u group%s\n"
12924 " toc adjust %lu\n"
12925 " long branch %lu\n"
12926 " long toc adj %lu\n"
12928 " plt call toc %lu\n"
12929 " global entry %lu"),
12931 stub_sec_count
== 1 ? "" : "s",
12932 htab
->stub_count
[ppc_stub_long_branch
- 1],
12933 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12934 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12935 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12936 htab
->stub_count
[ppc_stub_plt_call
- 1],
12937 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
12938 htab
->stub_count
[ppc_stub_global_entry
- 1]);
12943 /* This function undoes the changes made by add_symbol_adjust. */
12946 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12948 struct ppc_link_hash_entry
*eh
;
12950 if (h
->root
.type
== bfd_link_hash_indirect
)
12953 eh
= (struct ppc_link_hash_entry
*) h
;
12954 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12957 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12962 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12964 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12967 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12970 /* What to do when ld finds relocations against symbols defined in
12971 discarded sections. */
12973 static unsigned int
12974 ppc64_elf_action_discarded (asection
*sec
)
12976 if (strcmp (".opd", sec
->name
) == 0)
12979 if (strcmp (".toc", sec
->name
) == 0)
12982 if (strcmp (".toc1", sec
->name
) == 0)
12985 return _bfd_elf_default_action_discarded (sec
);
12988 /* The RELOCATE_SECTION function is called by the ELF backend linker
12989 to handle the relocations for a section.
12991 The relocs are always passed as Rela structures; if the section
12992 actually uses Rel structures, the r_addend field will always be
12995 This function is responsible for adjust the section contents as
12996 necessary, and (if using Rela relocs and generating a
12997 relocatable output file) adjusting the reloc addend as
13000 This function does not have to worry about setting the reloc
13001 address or the reloc symbol index.
13003 LOCAL_SYMS is a pointer to the swapped in local symbols.
13005 LOCAL_SECTIONS is an array giving the section in the input file
13006 corresponding to the st_shndx field of each local symbol.
13008 The global hash table entry for the global symbols can be found
13009 via elf_sym_hashes (input_bfd).
13011 When generating relocatable output, this function must handle
13012 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13013 going to be the section symbol corresponding to the output
13014 section, which means that the addend must be adjusted
13018 ppc64_elf_relocate_section (bfd
*output_bfd
,
13019 struct bfd_link_info
*info
,
13021 asection
*input_section
,
13022 bfd_byte
*contents
,
13023 Elf_Internal_Rela
*relocs
,
13024 Elf_Internal_Sym
*local_syms
,
13025 asection
**local_sections
)
13027 struct ppc_link_hash_table
*htab
;
13028 Elf_Internal_Shdr
*symtab_hdr
;
13029 struct elf_link_hash_entry
**sym_hashes
;
13030 Elf_Internal_Rela
*rel
;
13031 Elf_Internal_Rela
*relend
;
13032 Elf_Internal_Rela outrel
;
13034 struct got_entry
**local_got_ents
;
13036 bfd_boolean ret
= TRUE
;
13037 bfd_boolean is_opd
;
13038 /* Assume 'at' branch hints. */
13039 bfd_boolean is_isa_v2
= TRUE
;
13040 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
13042 /* Initialize howto table if needed. */
13043 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13046 htab
= ppc_hash_table (info
);
13050 /* Don't relocate stub sections. */
13051 if (input_section
->owner
== htab
->params
->stub_bfd
)
13054 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13056 local_got_ents
= elf_local_got_ents (input_bfd
);
13057 TOCstart
= elf_gp (output_bfd
);
13058 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13059 sym_hashes
= elf_sym_hashes (input_bfd
);
13060 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13063 relend
= relocs
+ input_section
->reloc_count
;
13064 for (; rel
< relend
; rel
++)
13066 enum elf_ppc64_reloc_type r_type
;
13068 bfd_reloc_status_type r
;
13069 Elf_Internal_Sym
*sym
;
13071 struct elf_link_hash_entry
*h_elf
;
13072 struct ppc_link_hash_entry
*h
;
13073 struct ppc_link_hash_entry
*fdh
;
13074 const char *sym_name
;
13075 unsigned long r_symndx
, toc_symndx
;
13076 bfd_vma toc_addend
;
13077 unsigned char tls_mask
, tls_gd
, tls_type
;
13078 unsigned char sym_type
;
13079 bfd_vma relocation
;
13080 bfd_boolean unresolved_reloc
;
13081 bfd_boolean warned
;
13082 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13085 struct ppc_stub_hash_entry
*stub_entry
;
13086 bfd_vma max_br_offset
;
13088 const Elf_Internal_Rela orig_rel
= *rel
;
13089 reloc_howto_type
*howto
;
13090 struct reloc_howto_struct alt_howto
;
13092 r_type
= ELF64_R_TYPE (rel
->r_info
);
13093 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13095 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13096 symbol of the previous ADDR64 reloc. The symbol gives us the
13097 proper TOC base to use. */
13098 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13100 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
13102 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
13108 unresolved_reloc
= FALSE
;
13111 if (r_symndx
< symtab_hdr
->sh_info
)
13113 /* It's a local symbol. */
13114 struct _opd_sec_data
*opd
;
13116 sym
= local_syms
+ r_symndx
;
13117 sec
= local_sections
[r_symndx
];
13118 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13119 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13120 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13121 opd
= get_opd_info (sec
);
13122 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13124 long adjust
= opd
->adjust
[OPD_NDX (sym
->st_value
13130 /* If this is a relocation against the opd section sym
13131 and we have edited .opd, adjust the reloc addend so
13132 that ld -r and ld --emit-relocs output is correct.
13133 If it is a reloc against some other .opd symbol,
13134 then the symbol value will be adjusted later. */
13135 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13136 rel
->r_addend
+= adjust
;
13138 relocation
+= adjust
;
13144 bfd_boolean ignored
;
13146 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13147 r_symndx
, symtab_hdr
, sym_hashes
,
13148 h_elf
, sec
, relocation
,
13149 unresolved_reloc
, warned
, ignored
);
13150 sym_name
= h_elf
->root
.root
.string
;
13151 sym_type
= h_elf
->type
;
13153 && sec
->owner
== output_bfd
13154 && strcmp (sec
->name
, ".opd") == 0)
13156 /* This is a symbol defined in a linker script. All
13157 such are defined in output sections, even those
13158 defined by simple assignment from a symbol defined in
13159 an input section. Transfer the symbol to an
13160 appropriate input .opd section, so that a branch to
13161 this symbol will be mapped to the location specified
13162 by the opd entry. */
13163 struct bfd_link_order
*lo
;
13164 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13165 if (lo
->type
== bfd_indirect_link_order
)
13167 asection
*isec
= lo
->u
.indirect
.section
;
13168 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13169 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13172 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13173 h_elf
->root
.u
.def
.section
= isec
;
13180 h
= (struct ppc_link_hash_entry
*) h_elf
;
13182 if (sec
!= NULL
&& discarded_section (sec
))
13183 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
13185 ppc64_elf_howto_table
[r_type
], 0,
13188 if (info
->relocatable
)
13191 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13193 relocation
= (TOCstart
13194 + htab
->stub_group
[input_section
->id
].toc_off
);
13195 sec
= bfd_abs_section_ptr
;
13196 unresolved_reloc
= FALSE
;
13199 /* TLS optimizations. Replace instruction sequences and relocs
13200 based on information we collected in tls_optimize. We edit
13201 RELOCS so that --emit-relocs will output something sensible
13202 for the final instruction stream. */
13207 tls_mask
= h
->tls_mask
;
13208 else if (local_got_ents
!= NULL
)
13210 struct plt_entry
**local_plt
= (struct plt_entry
**)
13211 (local_got_ents
+ symtab_hdr
->sh_info
);
13212 unsigned char *lgot_masks
= (unsigned char *)
13213 (local_plt
+ symtab_hdr
->sh_info
);
13214 tls_mask
= lgot_masks
[r_symndx
];
13217 && (r_type
== R_PPC64_TLS
13218 || r_type
== R_PPC64_TLSGD
13219 || r_type
== R_PPC64_TLSLD
))
13221 /* Check for toc tls entries. */
13222 unsigned char *toc_tls
;
13224 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13225 &local_syms
, rel
, input_bfd
))
13229 tls_mask
= *toc_tls
;
13232 /* Check that tls relocs are used with tls syms, and non-tls
13233 relocs are used with non-tls syms. */
13234 if (r_symndx
!= STN_UNDEF
13235 && r_type
!= R_PPC64_NONE
13237 || h
->elf
.root
.type
== bfd_link_hash_defined
13238 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13239 && (IS_PPC64_TLS_RELOC (r_type
)
13240 != (sym_type
== STT_TLS
13241 || (sym_type
== STT_SECTION
13242 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13245 && (r_type
== R_PPC64_TLS
13246 || r_type
== R_PPC64_TLSGD
13247 || r_type
== R_PPC64_TLSLD
))
13248 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13251 info
->callbacks
->einfo
13252 (!IS_PPC64_TLS_RELOC (r_type
)
13253 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13254 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13255 input_bfd
, input_section
, rel
->r_offset
,
13256 ppc64_elf_howto_table
[r_type
]->name
,
13260 /* Ensure reloc mapping code below stays sane. */
13261 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13262 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13263 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13264 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13265 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13266 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13267 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13268 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13269 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13270 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13278 case R_PPC64_LO_DS_OPT
:
13279 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13280 if ((insn
& (0x3f << 26)) != 58u << 26)
13282 insn
+= (14u << 26) - (58u << 26);
13283 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13284 r_type
= R_PPC64_TOC16_LO
;
13285 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13288 case R_PPC64_TOC16
:
13289 case R_PPC64_TOC16_LO
:
13290 case R_PPC64_TOC16_DS
:
13291 case R_PPC64_TOC16_LO_DS
:
13293 /* Check for toc tls entries. */
13294 unsigned char *toc_tls
;
13297 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13298 &local_syms
, rel
, input_bfd
);
13304 tls_mask
= *toc_tls
;
13305 if (r_type
== R_PPC64_TOC16_DS
13306 || r_type
== R_PPC64_TOC16_LO_DS
)
13309 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13314 /* If we found a GD reloc pair, then we might be
13315 doing a GD->IE transition. */
13318 tls_gd
= TLS_TPRELGD
;
13319 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13322 else if (retval
== 3)
13324 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13332 case R_PPC64_GOT_TPREL16_HI
:
13333 case R_PPC64_GOT_TPREL16_HA
:
13335 && (tls_mask
& TLS_TPREL
) == 0)
13337 rel
->r_offset
-= d_offset
;
13338 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13339 r_type
= R_PPC64_NONE
;
13340 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13344 case R_PPC64_GOT_TPREL16_DS
:
13345 case R_PPC64_GOT_TPREL16_LO_DS
:
13347 && (tls_mask
& TLS_TPREL
) == 0)
13350 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13352 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13353 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13354 r_type
= R_PPC64_TPREL16_HA
;
13355 if (toc_symndx
!= 0)
13357 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13358 rel
->r_addend
= toc_addend
;
13359 /* We changed the symbol. Start over in order to
13360 get h, sym, sec etc. right. */
13365 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13371 && (tls_mask
& TLS_TPREL
) == 0)
13373 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13374 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13377 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13378 /* Was PPC64_TLS which sits on insn boundary, now
13379 PPC64_TPREL16_LO which is at low-order half-word. */
13380 rel
->r_offset
+= d_offset
;
13381 r_type
= R_PPC64_TPREL16_LO
;
13382 if (toc_symndx
!= 0)
13384 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13385 rel
->r_addend
= toc_addend
;
13386 /* We changed the symbol. Start over in order to
13387 get h, sym, sec etc. right. */
13392 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13396 case R_PPC64_GOT_TLSGD16_HI
:
13397 case R_PPC64_GOT_TLSGD16_HA
:
13398 tls_gd
= TLS_TPRELGD
;
13399 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13403 case R_PPC64_GOT_TLSLD16_HI
:
13404 case R_PPC64_GOT_TLSLD16_HA
:
13405 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13408 if ((tls_mask
& tls_gd
) != 0)
13409 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13410 + R_PPC64_GOT_TPREL16_DS
);
13413 rel
->r_offset
-= d_offset
;
13414 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13415 r_type
= R_PPC64_NONE
;
13417 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13421 case R_PPC64_GOT_TLSGD16
:
13422 case R_PPC64_GOT_TLSGD16_LO
:
13423 tls_gd
= TLS_TPRELGD
;
13424 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13428 case R_PPC64_GOT_TLSLD16
:
13429 case R_PPC64_GOT_TLSLD16_LO
:
13430 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13432 unsigned int insn1
, insn2
, insn3
;
13436 offset
= (bfd_vma
) -1;
13437 /* If not using the newer R_PPC64_TLSGD/LD to mark
13438 __tls_get_addr calls, we must trust that the call
13439 stays with its arg setup insns, ie. that the next
13440 reloc is the __tls_get_addr call associated with
13441 the current reloc. Edit both insns. */
13442 if (input_section
->has_tls_get_addr_call
13443 && rel
+ 1 < relend
13444 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13445 htab
->tls_get_addr
,
13446 htab
->tls_get_addr_fd
))
13447 offset
= rel
[1].r_offset
;
13448 /* We read the low GOT_TLS (or TOC16) insn because we
13449 need to keep the destination reg. It may be
13450 something other than the usual r3, and moved to r3
13451 before the call by intervening code. */
13452 insn1
= bfd_get_32 (output_bfd
,
13453 contents
+ rel
->r_offset
- d_offset
);
13454 if ((tls_mask
& tls_gd
) != 0)
13457 insn1
&= (0x1f << 21) | (0x1f << 16);
13458 insn1
|= 58 << 26; /* ld */
13459 insn2
= 0x7c636a14; /* add 3,3,13 */
13460 if (offset
!= (bfd_vma
) -1)
13461 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13462 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13463 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13464 + R_PPC64_GOT_TPREL16_DS
);
13466 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13467 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13472 insn1
&= 0x1f << 21;
13473 insn1
|= 0x3c0d0000; /* addis r,13,0 */
13474 insn2
= 0x38630000; /* addi 3,3,0 */
13477 /* Was an LD reloc. */
13479 sec
= local_sections
[toc_symndx
];
13481 r_symndx
< symtab_hdr
->sh_info
;
13483 if (local_sections
[r_symndx
] == sec
)
13485 if (r_symndx
>= symtab_hdr
->sh_info
)
13486 r_symndx
= STN_UNDEF
;
13487 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13488 if (r_symndx
!= STN_UNDEF
)
13489 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13490 + sec
->output_offset
13491 + sec
->output_section
->vma
);
13493 else if (toc_symndx
!= 0)
13495 r_symndx
= toc_symndx
;
13496 rel
->r_addend
= toc_addend
;
13498 r_type
= R_PPC64_TPREL16_HA
;
13499 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13500 if (offset
!= (bfd_vma
) -1)
13502 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13503 R_PPC64_TPREL16_LO
);
13504 rel
[1].r_offset
= offset
+ d_offset
;
13505 rel
[1].r_addend
= rel
->r_addend
;
13508 bfd_put_32 (output_bfd
, insn1
,
13509 contents
+ rel
->r_offset
- d_offset
);
13510 if (offset
!= (bfd_vma
) -1)
13512 insn3
= bfd_get_32 (output_bfd
,
13513 contents
+ offset
+ 4);
13515 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13517 rel
[1].r_offset
+= 4;
13518 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13521 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13523 if ((tls_mask
& tls_gd
) == 0
13524 && (tls_gd
== 0 || toc_symndx
!= 0))
13526 /* We changed the symbol. Start over in order
13527 to get h, sym, sec etc. right. */
13534 case R_PPC64_TLSGD
:
13535 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13537 unsigned int insn2
, insn3
;
13538 bfd_vma offset
= rel
->r_offset
;
13540 if ((tls_mask
& TLS_TPRELGD
) != 0)
13543 r_type
= R_PPC64_NONE
;
13544 insn2
= 0x7c636a14; /* add 3,3,13 */
13549 if (toc_symndx
!= 0)
13551 r_symndx
= toc_symndx
;
13552 rel
->r_addend
= toc_addend
;
13554 r_type
= R_PPC64_TPREL16_LO
;
13555 rel
->r_offset
= offset
+ d_offset
;
13556 insn2
= 0x38630000; /* addi 3,3,0 */
13558 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13559 /* Zap the reloc on the _tls_get_addr call too. */
13560 BFD_ASSERT (offset
== rel
[1].r_offset
);
13561 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13562 insn3
= bfd_get_32 (output_bfd
,
13563 contents
+ offset
+ 4);
13565 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13567 rel
->r_offset
+= 4;
13568 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13571 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13572 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13580 case R_PPC64_TLSLD
:
13581 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13583 unsigned int insn2
, insn3
;
13584 bfd_vma offset
= rel
->r_offset
;
13587 sec
= local_sections
[toc_symndx
];
13589 r_symndx
< symtab_hdr
->sh_info
;
13591 if (local_sections
[r_symndx
] == sec
)
13593 if (r_symndx
>= symtab_hdr
->sh_info
)
13594 r_symndx
= STN_UNDEF
;
13595 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13596 if (r_symndx
!= STN_UNDEF
)
13597 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13598 + sec
->output_offset
13599 + sec
->output_section
->vma
);
13601 r_type
= R_PPC64_TPREL16_LO
;
13602 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13603 rel
->r_offset
= offset
+ d_offset
;
13604 /* Zap the reloc on the _tls_get_addr call too. */
13605 BFD_ASSERT (offset
== rel
[1].r_offset
);
13606 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13607 insn2
= 0x38630000; /* addi 3,3,0 */
13608 insn3
= bfd_get_32 (output_bfd
,
13609 contents
+ offset
+ 4);
13611 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13613 rel
->r_offset
+= 4;
13614 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13617 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13623 case R_PPC64_DTPMOD64
:
13624 if (rel
+ 1 < relend
13625 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13626 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13628 if ((tls_mask
& TLS_GD
) == 0)
13630 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13631 if ((tls_mask
& TLS_TPRELGD
) != 0)
13632 r_type
= R_PPC64_TPREL64
;
13635 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13636 r_type
= R_PPC64_NONE
;
13638 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13643 if ((tls_mask
& TLS_LD
) == 0)
13645 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13646 r_type
= R_PPC64_NONE
;
13647 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13652 case R_PPC64_TPREL64
:
13653 if ((tls_mask
& TLS_TPREL
) == 0)
13655 r_type
= R_PPC64_NONE
;
13656 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13660 case R_PPC64_REL16_HA
:
13661 /* If we are generating a non-PIC executable, edit
13662 . 0: addis 2,12,.TOC.-0b@ha
13663 . addi 2,2,.TOC.-0b@l
13664 used by ELFv2 global entry points to set up r2, to
13667 if .TOC. is in range. */
13669 && !info
->traditional_format
13670 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13671 && rel
+ 1 < relend
13672 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13673 && rel
[1].r_offset
== rel
->r_offset
+ 4
13674 && rel
[1].r_addend
== rel
->r_addend
+ 4
13675 && relocation
+ 0x80008000 <= 0xffffffff)
13677 unsigned int insn1
, insn2
;
13678 bfd_vma offset
= rel
->r_offset
- d_offset
;
13679 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13680 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13681 if ((insn1
& 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13682 && (insn2
& 0xffff0000) == 0x38420000 /* addi 2,2 */)
13684 r_type
= R_PPC64_ADDR16_HA
;
13685 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13686 rel
->r_addend
-= d_offset
;
13687 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13688 rel
[1].r_addend
-= d_offset
+ 4;
13689 bfd_put_32 (output_bfd
, 0x3c400000, contents
+ offset
);
13695 /* Handle other relocations that tweak non-addend part of insn. */
13697 max_br_offset
= 1 << 25;
13698 addend
= rel
->r_addend
;
13699 reloc_dest
= DEST_NORMAL
;
13705 case R_PPC64_TOCSAVE
:
13706 if (relocation
+ addend
== (rel
->r_offset
13707 + input_section
->output_offset
13708 + input_section
->output_section
->vma
)
13709 && tocsave_find (htab
, NO_INSERT
,
13710 &local_syms
, rel
, input_bfd
))
13712 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13714 || insn
== CROR_151515
|| insn
== CROR_313131
)
13715 bfd_put_32 (input_bfd
,
13716 STD_R2_0R1
+ STK_TOC (htab
),
13717 contents
+ rel
->r_offset
);
13721 /* Branch taken prediction relocations. */
13722 case R_PPC64_ADDR14_BRTAKEN
:
13723 case R_PPC64_REL14_BRTAKEN
:
13724 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13727 /* Branch not taken prediction relocations. */
13728 case R_PPC64_ADDR14_BRNTAKEN
:
13729 case R_PPC64_REL14_BRNTAKEN
:
13730 insn
|= bfd_get_32 (output_bfd
,
13731 contents
+ rel
->r_offset
) & ~(0x01 << 21);
13734 case R_PPC64_REL14
:
13735 max_br_offset
= 1 << 15;
13738 case R_PPC64_REL24
:
13739 /* Calls to functions with a different TOC, such as calls to
13740 shared objects, need to alter the TOC pointer. This is
13741 done using a linkage stub. A REL24 branching to these
13742 linkage stubs needs to be followed by a nop, as the nop
13743 will be replaced with an instruction to restore the TOC
13748 && h
->oh
->is_func_descriptor
)
13749 fdh
= ppc_follow_link (h
->oh
);
13750 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13752 if (stub_entry
!= NULL
13753 && (stub_entry
->stub_type
== ppc_stub_plt_call
13754 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13755 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13756 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13758 bfd_boolean can_plt_call
= FALSE
;
13760 /* All of these stubs will modify r2, so there must be a
13761 branch and link followed by a nop. The nop is
13762 replaced by an insn to restore r2. */
13763 if (rel
->r_offset
+ 8 <= input_section
->size
)
13767 br
= bfd_get_32 (input_bfd
,
13768 contents
+ rel
->r_offset
);
13773 nop
= bfd_get_32 (input_bfd
,
13774 contents
+ rel
->r_offset
+ 4);
13776 || nop
== CROR_151515
|| nop
== CROR_313131
)
13779 && (h
== htab
->tls_get_addr_fd
13780 || h
== htab
->tls_get_addr
)
13781 && !htab
->params
->no_tls_get_addr_opt
)
13783 /* Special stub used, leave nop alone. */
13786 bfd_put_32 (input_bfd
,
13787 LD_R2_0R1
+ STK_TOC (htab
),
13788 contents
+ rel
->r_offset
+ 4);
13789 can_plt_call
= TRUE
;
13794 if (!can_plt_call
&& h
!= NULL
)
13796 const char *name
= h
->elf
.root
.root
.string
;
13801 if (strncmp (name
, "__libc_start_main", 17) == 0
13802 && (name
[17] == 0 || name
[17] == '@'))
13804 /* Allow crt1 branch to go via a toc adjusting
13805 stub. Other calls that never return could do
13806 the same, if we could detect such. */
13807 can_plt_call
= TRUE
;
13813 /* g++ as of 20130507 emits self-calls without a
13814 following nop. This is arguably wrong since we
13815 have conflicting information. On the one hand a
13816 global symbol and on the other a local call
13817 sequence, but don't error for this special case.
13818 It isn't possible to cheaply verify we have
13819 exactly such a call. Allow all calls to the same
13821 asection
*code_sec
= sec
;
13823 if (get_opd_info (sec
) != NULL
)
13825 bfd_vma off
= (relocation
+ addend
13826 - sec
->output_section
->vma
13827 - sec
->output_offset
);
13829 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13831 if (code_sec
== input_section
)
13832 can_plt_call
= TRUE
;
13837 if (stub_entry
->stub_type
== ppc_stub_plt_call
13838 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13839 info
->callbacks
->einfo
13840 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13841 "recompile with -fPIC\n"),
13842 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13844 info
->callbacks
->einfo
13845 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13846 "(-mcmodel=small toc adjust stub)\n"),
13847 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13849 bfd_set_error (bfd_error_bad_value
);
13854 && (stub_entry
->stub_type
== ppc_stub_plt_call
13855 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13856 unresolved_reloc
= FALSE
;
13859 if ((stub_entry
== NULL
13860 || stub_entry
->stub_type
== ppc_stub_long_branch
13861 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13862 && get_opd_info (sec
) != NULL
)
13864 /* The branch destination is the value of the opd entry. */
13865 bfd_vma off
= (relocation
+ addend
13866 - sec
->output_section
->vma
13867 - sec
->output_offset
);
13868 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13869 if (dest
!= (bfd_vma
) -1)
13873 reloc_dest
= DEST_OPD
;
13877 /* If the branch is out of reach we ought to have a long
13879 from
= (rel
->r_offset
13880 + input_section
->output_offset
13881 + input_section
->output_section
->vma
);
13883 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
13887 if (stub_entry
!= NULL
13888 && (stub_entry
->stub_type
== ppc_stub_long_branch
13889 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13890 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13891 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13892 || (relocation
+ addend
- from
+ max_br_offset
13893 < 2 * max_br_offset
)))
13894 /* Don't use the stub if this branch is in range. */
13897 if (stub_entry
!= NULL
)
13899 /* Munge up the value and addend so that we call the stub
13900 rather than the procedure directly. */
13901 relocation
= (stub_entry
->stub_offset
13902 + stub_entry
->stub_sec
->output_offset
13903 + stub_entry
->stub_sec
->output_section
->vma
);
13905 reloc_dest
= DEST_STUB
;
13907 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13908 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13909 && (ALWAYS_EMIT_R2SAVE
13910 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13911 && rel
+ 1 < relend
13912 && rel
[1].r_offset
== rel
->r_offset
+ 4
13913 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13921 /* Set 'a' bit. This is 0b00010 in BO field for branch
13922 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13923 for branch on CTR insns (BO == 1a00t or 1a01t). */
13924 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13925 insn
|= 0x02 << 21;
13926 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13927 insn
|= 0x08 << 21;
13933 /* Invert 'y' bit if not the default. */
13934 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13935 insn
^= 0x01 << 21;
13938 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13941 /* NOP out calls to undefined weak functions.
13942 We can thus call a weak function without first
13943 checking whether the function is defined. */
13945 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13946 && h
->elf
.dynindx
== -1
13947 && r_type
== R_PPC64_REL24
13951 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13957 /* Set `addend'. */
13962 info
->callbacks
->einfo
13963 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13964 input_bfd
, (int) r_type
, sym_name
);
13966 bfd_set_error (bfd_error_bad_value
);
13972 case R_PPC64_TLSGD
:
13973 case R_PPC64_TLSLD
:
13974 case R_PPC64_TOCSAVE
:
13975 case R_PPC64_GNU_VTINHERIT
:
13976 case R_PPC64_GNU_VTENTRY
:
13979 /* GOT16 relocations. Like an ADDR16 using the symbol's
13980 address in the GOT as relocation value instead of the
13981 symbol's value itself. Also, create a GOT entry for the
13982 symbol and put the symbol value there. */
13983 case R_PPC64_GOT_TLSGD16
:
13984 case R_PPC64_GOT_TLSGD16_LO
:
13985 case R_PPC64_GOT_TLSGD16_HI
:
13986 case R_PPC64_GOT_TLSGD16_HA
:
13987 tls_type
= TLS_TLS
| TLS_GD
;
13990 case R_PPC64_GOT_TLSLD16
:
13991 case R_PPC64_GOT_TLSLD16_LO
:
13992 case R_PPC64_GOT_TLSLD16_HI
:
13993 case R_PPC64_GOT_TLSLD16_HA
:
13994 tls_type
= TLS_TLS
| TLS_LD
;
13997 case R_PPC64_GOT_TPREL16_DS
:
13998 case R_PPC64_GOT_TPREL16_LO_DS
:
13999 case R_PPC64_GOT_TPREL16_HI
:
14000 case R_PPC64_GOT_TPREL16_HA
:
14001 tls_type
= TLS_TLS
| TLS_TPREL
;
14004 case R_PPC64_GOT_DTPREL16_DS
:
14005 case R_PPC64_GOT_DTPREL16_LO_DS
:
14006 case R_PPC64_GOT_DTPREL16_HI
:
14007 case R_PPC64_GOT_DTPREL16_HA
:
14008 tls_type
= TLS_TLS
| TLS_DTPREL
;
14011 case R_PPC64_GOT16
:
14012 case R_PPC64_GOT16_LO
:
14013 case R_PPC64_GOT16_HI
:
14014 case R_PPC64_GOT16_HA
:
14015 case R_PPC64_GOT16_DS
:
14016 case R_PPC64_GOT16_LO_DS
:
14019 /* Relocation is to the entry for this symbol in the global
14024 unsigned long indx
= 0;
14025 struct got_entry
*ent
;
14027 if (tls_type
== (TLS_TLS
| TLS_LD
)
14029 || !h
->elf
.def_dynamic
))
14030 ent
= ppc64_tlsld_got (input_bfd
);
14036 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
14037 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
14040 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
14041 /* This is actually a static link, or it is a
14042 -Bsymbolic link and the symbol is defined
14043 locally, or the symbol was forced to be local
14044 because of a version file. */
14048 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14049 indx
= h
->elf
.dynindx
;
14050 unresolved_reloc
= FALSE
;
14052 ent
= h
->elf
.got
.glist
;
14056 if (local_got_ents
== NULL
)
14058 ent
= local_got_ents
[r_symndx
];
14061 for (; ent
!= NULL
; ent
= ent
->next
)
14062 if (ent
->addend
== orig_rel
.r_addend
14063 && ent
->owner
== input_bfd
14064 && ent
->tls_type
== tls_type
)
14070 if (ent
->is_indirect
)
14071 ent
= ent
->got
.ent
;
14072 offp
= &ent
->got
.offset
;
14073 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14077 /* The offset must always be a multiple of 8. We use the
14078 least significant bit to record whether we have already
14079 processed this entry. */
14081 if ((off
& 1) != 0)
14085 /* Generate relocs for the dynamic linker, except in
14086 the case of TLSLD where we'll use one entry per
14094 ? h
->elf
.type
== STT_GNU_IFUNC
14095 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14097 relgot
= htab
->elf
.irelplt
;
14098 else if ((info
->shared
|| indx
!= 0)
14100 || (tls_type
== (TLS_TLS
| TLS_LD
)
14101 && !h
->elf
.def_dynamic
)
14102 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14103 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14104 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14105 if (relgot
!= NULL
)
14107 outrel
.r_offset
= (got
->output_section
->vma
14108 + got
->output_offset
14110 outrel
.r_addend
= addend
;
14111 if (tls_type
& (TLS_LD
| TLS_GD
))
14113 outrel
.r_addend
= 0;
14114 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14115 if (tls_type
== (TLS_TLS
| TLS_GD
))
14117 loc
= relgot
->contents
;
14118 loc
+= (relgot
->reloc_count
++
14119 * sizeof (Elf64_External_Rela
));
14120 bfd_elf64_swap_reloca_out (output_bfd
,
14122 outrel
.r_offset
+= 8;
14123 outrel
.r_addend
= addend
;
14125 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14128 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14129 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14130 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14131 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14132 else if (indx
!= 0)
14133 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14137 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14139 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14141 /* Write the .got section contents for the sake
14143 loc
= got
->contents
+ off
;
14144 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14148 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14150 outrel
.r_addend
+= relocation
;
14151 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14153 if (htab
->elf
.tls_sec
== NULL
)
14154 outrel
.r_addend
= 0;
14156 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14159 loc
= relgot
->contents
;
14160 loc
+= (relgot
->reloc_count
++
14161 * sizeof (Elf64_External_Rela
));
14162 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14165 /* Init the .got section contents here if we're not
14166 emitting a reloc. */
14169 relocation
+= addend
;
14170 if (tls_type
== (TLS_TLS
| TLS_LD
))
14172 else if (tls_type
!= 0)
14174 if (htab
->elf
.tls_sec
== NULL
)
14178 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14179 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14180 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14183 if (tls_type
== (TLS_TLS
| TLS_GD
))
14185 bfd_put_64 (output_bfd
, relocation
,
14186 got
->contents
+ off
+ 8);
14191 bfd_put_64 (output_bfd
, relocation
,
14192 got
->contents
+ off
);
14196 if (off
>= (bfd_vma
) -2)
14199 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14200 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
14204 case R_PPC64_PLT16_HA
:
14205 case R_PPC64_PLT16_HI
:
14206 case R_PPC64_PLT16_LO
:
14207 case R_PPC64_PLT32
:
14208 case R_PPC64_PLT64
:
14209 /* Relocation is to the entry for this symbol in the
14210 procedure linkage table. */
14212 /* Resolve a PLT reloc against a local symbol directly,
14213 without using the procedure linkage table. */
14217 /* It's possible that we didn't make a PLT entry for this
14218 symbol. This happens when statically linking PIC code,
14219 or when using -Bsymbolic. Go find a match if there is a
14221 if (htab
->elf
.splt
!= NULL
)
14223 struct plt_entry
*ent
;
14224 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14225 if (ent
->plt
.offset
!= (bfd_vma
) -1
14226 && ent
->addend
== orig_rel
.r_addend
)
14228 relocation
= (htab
->elf
.splt
->output_section
->vma
14229 + htab
->elf
.splt
->output_offset
14230 + ent
->plt
.offset
);
14231 unresolved_reloc
= FALSE
;
14238 /* Relocation value is TOC base. */
14239 relocation
= TOCstart
;
14240 if (r_symndx
== STN_UNDEF
)
14241 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
14242 else if (unresolved_reloc
)
14244 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
14245 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
14247 unresolved_reloc
= TRUE
;
14250 /* TOC16 relocs. We want the offset relative to the TOC base,
14251 which is the address of the start of the TOC plus 0x8000.
14252 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14254 case R_PPC64_TOC16
:
14255 case R_PPC64_TOC16_LO
:
14256 case R_PPC64_TOC16_HI
:
14257 case R_PPC64_TOC16_DS
:
14258 case R_PPC64_TOC16_LO_DS
:
14259 case R_PPC64_TOC16_HA
:
14260 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
14263 /* Relocate against the beginning of the section. */
14264 case R_PPC64_SECTOFF
:
14265 case R_PPC64_SECTOFF_LO
:
14266 case R_PPC64_SECTOFF_HI
:
14267 case R_PPC64_SECTOFF_DS
:
14268 case R_PPC64_SECTOFF_LO_DS
:
14269 case R_PPC64_SECTOFF_HA
:
14271 addend
-= sec
->output_section
->vma
;
14274 case R_PPC64_REL16
:
14275 case R_PPC64_REL16_LO
:
14276 case R_PPC64_REL16_HI
:
14277 case R_PPC64_REL16_HA
:
14280 case R_PPC64_REL14
:
14281 case R_PPC64_REL14_BRNTAKEN
:
14282 case R_PPC64_REL14_BRTAKEN
:
14283 case R_PPC64_REL24
:
14286 case R_PPC64_TPREL16
:
14287 case R_PPC64_TPREL16_LO
:
14288 case R_PPC64_TPREL16_HI
:
14289 case R_PPC64_TPREL16_HA
:
14290 case R_PPC64_TPREL16_DS
:
14291 case R_PPC64_TPREL16_LO_DS
:
14292 case R_PPC64_TPREL16_HIGH
:
14293 case R_PPC64_TPREL16_HIGHA
:
14294 case R_PPC64_TPREL16_HIGHER
:
14295 case R_PPC64_TPREL16_HIGHERA
:
14296 case R_PPC64_TPREL16_HIGHEST
:
14297 case R_PPC64_TPREL16_HIGHESTA
:
14299 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14300 && h
->elf
.dynindx
== -1)
14302 /* Make this relocation against an undefined weak symbol
14303 resolve to zero. This is really just a tweak, since
14304 code using weak externs ought to check that they are
14305 defined before using them. */
14306 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14308 insn
= bfd_get_32 (output_bfd
, p
);
14309 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14311 bfd_put_32 (output_bfd
, insn
, p
);
14314 if (htab
->elf
.tls_sec
!= NULL
)
14315 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14317 /* The TPREL16 relocs shouldn't really be used in shared
14318 libs as they will result in DT_TEXTREL being set, but
14319 support them anyway. */
14323 case R_PPC64_DTPREL16
:
14324 case R_PPC64_DTPREL16_LO
:
14325 case R_PPC64_DTPREL16_HI
:
14326 case R_PPC64_DTPREL16_HA
:
14327 case R_PPC64_DTPREL16_DS
:
14328 case R_PPC64_DTPREL16_LO_DS
:
14329 case R_PPC64_DTPREL16_HIGH
:
14330 case R_PPC64_DTPREL16_HIGHA
:
14331 case R_PPC64_DTPREL16_HIGHER
:
14332 case R_PPC64_DTPREL16_HIGHERA
:
14333 case R_PPC64_DTPREL16_HIGHEST
:
14334 case R_PPC64_DTPREL16_HIGHESTA
:
14335 if (htab
->elf
.tls_sec
!= NULL
)
14336 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14339 case R_PPC64_ADDR64_LOCAL
:
14340 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14345 case R_PPC64_DTPMOD64
:
14350 case R_PPC64_TPREL64
:
14351 if (htab
->elf
.tls_sec
!= NULL
)
14352 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14355 case R_PPC64_DTPREL64
:
14356 if (htab
->elf
.tls_sec
!= NULL
)
14357 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14360 /* Relocations that may need to be propagated if this is a
14362 case R_PPC64_REL30
:
14363 case R_PPC64_REL32
:
14364 case R_PPC64_REL64
:
14365 case R_PPC64_ADDR14
:
14366 case R_PPC64_ADDR14_BRNTAKEN
:
14367 case R_PPC64_ADDR14_BRTAKEN
:
14368 case R_PPC64_ADDR16
:
14369 case R_PPC64_ADDR16_DS
:
14370 case R_PPC64_ADDR16_HA
:
14371 case R_PPC64_ADDR16_HI
:
14372 case R_PPC64_ADDR16_HIGH
:
14373 case R_PPC64_ADDR16_HIGHA
:
14374 case R_PPC64_ADDR16_HIGHER
:
14375 case R_PPC64_ADDR16_HIGHERA
:
14376 case R_PPC64_ADDR16_HIGHEST
:
14377 case R_PPC64_ADDR16_HIGHESTA
:
14378 case R_PPC64_ADDR16_LO
:
14379 case R_PPC64_ADDR16_LO_DS
:
14380 case R_PPC64_ADDR24
:
14381 case R_PPC64_ADDR32
:
14382 case R_PPC64_ADDR64
:
14383 case R_PPC64_UADDR16
:
14384 case R_PPC64_UADDR32
:
14385 case R_PPC64_UADDR64
:
14387 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14390 if (NO_OPD_RELOCS
&& is_opd
)
14395 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14396 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14397 && (must_be_dyn_reloc (info
, r_type
)
14398 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14399 || (ELIMINATE_COPY_RELOCS
14402 && h
->elf
.dynindx
!= -1
14403 && !h
->elf
.non_got_ref
14404 && !h
->elf
.def_regular
)
14407 ? h
->elf
.type
== STT_GNU_IFUNC
14408 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14410 bfd_boolean skip
, relocate
;
14414 /* When generating a dynamic object, these relocations
14415 are copied into the output file to be resolved at run
14421 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14422 input_section
, rel
->r_offset
);
14423 if (out_off
== (bfd_vma
) -1)
14425 else if (out_off
== (bfd_vma
) -2)
14426 skip
= TRUE
, relocate
= TRUE
;
14427 out_off
+= (input_section
->output_section
->vma
14428 + input_section
->output_offset
);
14429 outrel
.r_offset
= out_off
;
14430 outrel
.r_addend
= rel
->r_addend
;
14432 /* Optimize unaligned reloc use. */
14433 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14434 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14435 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14436 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14437 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14438 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14439 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14440 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14441 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14444 memset (&outrel
, 0, sizeof outrel
);
14445 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14447 && r_type
!= R_PPC64_TOC
)
14449 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14450 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14454 /* This symbol is local, or marked to become local,
14455 or this is an opd section reloc which must point
14456 at a local function. */
14457 outrel
.r_addend
+= relocation
;
14458 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14460 if (is_opd
&& h
!= NULL
)
14462 /* Lie about opd entries. This case occurs
14463 when building shared libraries and we
14464 reference a function in another shared
14465 lib. The same thing happens for a weak
14466 definition in an application that's
14467 overridden by a strong definition in a
14468 shared lib. (I believe this is a generic
14469 bug in binutils handling of weak syms.)
14470 In these cases we won't use the opd
14471 entry in this lib. */
14472 unresolved_reloc
= FALSE
;
14475 && r_type
== R_PPC64_ADDR64
14477 ? h
->elf
.type
== STT_GNU_IFUNC
14478 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14479 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14482 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14484 /* We need to relocate .opd contents for ld.so.
14485 Prelink also wants simple and consistent rules
14486 for relocs. This make all RELATIVE relocs have
14487 *r_offset equal to r_addend. */
14496 ? h
->elf
.type
== STT_GNU_IFUNC
14497 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14499 info
->callbacks
->einfo
14500 (_("%P: %H: %s for indirect "
14501 "function `%T' unsupported\n"),
14502 input_bfd
, input_section
, rel
->r_offset
,
14503 ppc64_elf_howto_table
[r_type
]->name
,
14507 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14509 else if (sec
== NULL
|| sec
->owner
== NULL
)
14511 bfd_set_error (bfd_error_bad_value
);
14518 osec
= sec
->output_section
;
14519 indx
= elf_section_data (osec
)->dynindx
;
14523 if ((osec
->flags
& SEC_READONLY
) == 0
14524 && htab
->elf
.data_index_section
!= NULL
)
14525 osec
= htab
->elf
.data_index_section
;
14527 osec
= htab
->elf
.text_index_section
;
14528 indx
= elf_section_data (osec
)->dynindx
;
14530 BFD_ASSERT (indx
!= 0);
14532 /* We are turning this relocation into one
14533 against a section symbol, so subtract out
14534 the output section's address but not the
14535 offset of the input section in the output
14537 outrel
.r_addend
-= osec
->vma
;
14540 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14544 sreloc
= elf_section_data (input_section
)->sreloc
;
14546 ? h
->elf
.type
== STT_GNU_IFUNC
14547 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14548 sreloc
= htab
->elf
.irelplt
;
14549 if (sreloc
== NULL
)
14552 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14555 loc
= sreloc
->contents
;
14556 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14557 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14559 /* If this reloc is against an external symbol, it will
14560 be computed at runtime, so there's no need to do
14561 anything now. However, for the sake of prelink ensure
14562 that the section contents are a known value. */
14565 unresolved_reloc
= FALSE
;
14566 /* The value chosen here is quite arbitrary as ld.so
14567 ignores section contents except for the special
14568 case of .opd where the contents might be accessed
14569 before relocation. Choose zero, as that won't
14570 cause reloc overflow. */
14573 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14574 to improve backward compatibility with older
14576 if (r_type
== R_PPC64_ADDR64
)
14577 addend
= outrel
.r_addend
;
14578 /* Adjust pc_relative relocs to have zero in *r_offset. */
14579 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14580 addend
= (input_section
->output_section
->vma
14581 + input_section
->output_offset
14588 case R_PPC64_GLOB_DAT
:
14589 case R_PPC64_JMP_SLOT
:
14590 case R_PPC64_JMP_IREL
:
14591 case R_PPC64_RELATIVE
:
14592 /* We shouldn't ever see these dynamic relocs in relocatable
14594 /* Fall through. */
14596 case R_PPC64_PLTGOT16
:
14597 case R_PPC64_PLTGOT16_DS
:
14598 case R_PPC64_PLTGOT16_HA
:
14599 case R_PPC64_PLTGOT16_HI
:
14600 case R_PPC64_PLTGOT16_LO
:
14601 case R_PPC64_PLTGOT16_LO_DS
:
14602 case R_PPC64_PLTREL32
:
14603 case R_PPC64_PLTREL64
:
14604 /* These ones haven't been implemented yet. */
14606 info
->callbacks
->einfo
14607 (_("%P: %B: %s is not supported for `%T'\n"),
14609 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14611 bfd_set_error (bfd_error_invalid_operation
);
14616 /* Multi-instruction sequences that access the TOC can be
14617 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14618 to nop; addi rb,r2,x; */
14624 case R_PPC64_GOT_TLSLD16_HI
:
14625 case R_PPC64_GOT_TLSGD16_HI
:
14626 case R_PPC64_GOT_TPREL16_HI
:
14627 case R_PPC64_GOT_DTPREL16_HI
:
14628 case R_PPC64_GOT16_HI
:
14629 case R_PPC64_TOC16_HI
:
14630 /* These relocs would only be useful if building up an
14631 offset to later add to r2, perhaps in an indexed
14632 addressing mode instruction. Don't try to optimize.
14633 Unfortunately, the possibility of someone building up an
14634 offset like this or even with the HA relocs, means that
14635 we need to check the high insn when optimizing the low
14639 case R_PPC64_GOT_TLSLD16_HA
:
14640 case R_PPC64_GOT_TLSGD16_HA
:
14641 case R_PPC64_GOT_TPREL16_HA
:
14642 case R_PPC64_GOT_DTPREL16_HA
:
14643 case R_PPC64_GOT16_HA
:
14644 case R_PPC64_TOC16_HA
:
14645 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14646 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14648 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14649 bfd_put_32 (input_bfd
, NOP
, p
);
14653 case R_PPC64_GOT_TLSLD16_LO
:
14654 case R_PPC64_GOT_TLSGD16_LO
:
14655 case R_PPC64_GOT_TPREL16_LO_DS
:
14656 case R_PPC64_GOT_DTPREL16_LO_DS
:
14657 case R_PPC64_GOT16_LO
:
14658 case R_PPC64_GOT16_LO_DS
:
14659 case R_PPC64_TOC16_LO
:
14660 case R_PPC64_TOC16_LO_DS
:
14661 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14662 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14664 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14665 insn
= bfd_get_32 (input_bfd
, p
);
14666 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14668 /* Transform addic to addi when we change reg. */
14669 insn
&= ~((0x3f << 26) | (0x1f << 16));
14670 insn
|= (14u << 26) | (2 << 16);
14674 insn
&= ~(0x1f << 16);
14677 bfd_put_32 (input_bfd
, insn
, p
);
14682 /* Do any further special processing. */
14683 howto
= ppc64_elf_howto_table
[(int) r_type
];
14689 case R_PPC64_REL16_HA
:
14690 case R_PPC64_ADDR16_HA
:
14691 case R_PPC64_ADDR16_HIGHA
:
14692 case R_PPC64_ADDR16_HIGHERA
:
14693 case R_PPC64_ADDR16_HIGHESTA
:
14694 case R_PPC64_TOC16_HA
:
14695 case R_PPC64_SECTOFF_HA
:
14696 case R_PPC64_TPREL16_HA
:
14697 case R_PPC64_TPREL16_HIGHA
:
14698 case R_PPC64_TPREL16_HIGHERA
:
14699 case R_PPC64_TPREL16_HIGHESTA
:
14700 case R_PPC64_DTPREL16_HA
:
14701 case R_PPC64_DTPREL16_HIGHA
:
14702 case R_PPC64_DTPREL16_HIGHERA
:
14703 case R_PPC64_DTPREL16_HIGHESTA
:
14704 /* It's just possible that this symbol is a weak symbol
14705 that's not actually defined anywhere. In that case,
14706 'sec' would be NULL, and we should leave the symbol
14707 alone (it will be set to zero elsewhere in the link). */
14712 case R_PPC64_GOT16_HA
:
14713 case R_PPC64_PLTGOT16_HA
:
14714 case R_PPC64_PLT16_HA
:
14715 case R_PPC64_GOT_TLSGD16_HA
:
14716 case R_PPC64_GOT_TLSLD16_HA
:
14717 case R_PPC64_GOT_TPREL16_HA
:
14718 case R_PPC64_GOT_DTPREL16_HA
:
14719 /* Add 0x10000 if sign bit in 0:15 is set.
14720 Bits 0:15 are not used. */
14724 case R_PPC64_ADDR16_DS
:
14725 case R_PPC64_ADDR16_LO_DS
:
14726 case R_PPC64_GOT16_DS
:
14727 case R_PPC64_GOT16_LO_DS
:
14728 case R_PPC64_PLT16_LO_DS
:
14729 case R_PPC64_SECTOFF_DS
:
14730 case R_PPC64_SECTOFF_LO_DS
:
14731 case R_PPC64_TOC16_DS
:
14732 case R_PPC64_TOC16_LO_DS
:
14733 case R_PPC64_PLTGOT16_DS
:
14734 case R_PPC64_PLTGOT16_LO_DS
:
14735 case R_PPC64_GOT_TPREL16_DS
:
14736 case R_PPC64_GOT_TPREL16_LO_DS
:
14737 case R_PPC64_GOT_DTPREL16_DS
:
14738 case R_PPC64_GOT_DTPREL16_LO_DS
:
14739 case R_PPC64_TPREL16_DS
:
14740 case R_PPC64_TPREL16_LO_DS
:
14741 case R_PPC64_DTPREL16_DS
:
14742 case R_PPC64_DTPREL16_LO_DS
:
14743 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14745 /* If this reloc is against an lq insn, then the value must be
14746 a multiple of 16. This is somewhat of a hack, but the
14747 "correct" way to do this by defining _DQ forms of all the
14748 _DS relocs bloats all reloc switches in this file. It
14749 doesn't seem to make much sense to use any of these relocs
14750 in data, so testing the insn should be safe. */
14751 if ((insn
& (0x3f << 26)) == (56u << 26))
14753 if (((relocation
+ addend
) & mask
) != 0)
14755 info
->callbacks
->einfo
14756 (_("%P: %H: error: %s not a multiple of %u\n"),
14757 input_bfd
, input_section
, rel
->r_offset
,
14760 bfd_set_error (bfd_error_bad_value
);
14767 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14768 because such sections are not SEC_ALLOC and thus ld.so will
14769 not process them. */
14770 if (unresolved_reloc
14771 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
14772 && h
->elf
.def_dynamic
)
14773 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
14774 rel
->r_offset
) != (bfd_vma
) -1)
14776 info
->callbacks
->einfo
14777 (_("%P: %H: unresolvable %s against `%T'\n"),
14778 input_bfd
, input_section
, rel
->r_offset
,
14780 h
->elf
.root
.root
.string
);
14784 /* 16-bit fields in insns mostly have signed values, but a
14785 few insns have 16-bit unsigned values. Really, we should
14786 have different reloc types. */
14787 if (howto
->complain_on_overflow
!= complain_overflow_dont
14788 && howto
->dst_mask
== 0xffff
14789 && (input_section
->flags
& SEC_CODE
) != 0)
14791 enum complain_overflow complain
= complain_overflow_signed
;
14793 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14794 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
14795 complain
= complain_overflow_bitfield
;
14796 else if (howto
->rightshift
== 0
14797 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
14798 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
14799 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
14800 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
14801 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
14802 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
14803 complain
= complain_overflow_unsigned
;
14804 if (howto
->complain_on_overflow
!= complain
)
14806 alt_howto
= *howto
;
14807 alt_howto
.complain_on_overflow
= complain
;
14808 howto
= &alt_howto
;
14812 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
14813 rel
->r_offset
, relocation
, addend
);
14815 if (r
!= bfd_reloc_ok
)
14817 char *more_info
= NULL
;
14818 const char *reloc_name
= howto
->name
;
14820 if (reloc_dest
!= DEST_NORMAL
)
14822 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14823 if (more_info
!= NULL
)
14825 strcpy (more_info
, reloc_name
);
14826 strcat (more_info
, (reloc_dest
== DEST_OPD
14827 ? " (OPD)" : " (stub)"));
14828 reloc_name
= more_info
;
14832 if (r
== bfd_reloc_overflow
)
14837 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14838 && howto
->pc_relative
)
14840 /* Assume this is a call protected by other code that
14841 detects the symbol is undefined. If this is the case,
14842 we can safely ignore the overflow. If not, the
14843 program is hosed anyway, and a little warning isn't
14849 if (!((*info
->callbacks
->reloc_overflow
)
14850 (info
, &h
->elf
.root
, sym_name
,
14851 reloc_name
, orig_rel
.r_addend
,
14852 input_bfd
, input_section
, rel
->r_offset
)))
14857 info
->callbacks
->einfo
14858 (_("%P: %H: %s against `%T': error %d\n"),
14859 input_bfd
, input_section
, rel
->r_offset
,
14860 reloc_name
, sym_name
, (int) r
);
14863 if (more_info
!= NULL
)
14868 /* If we're emitting relocations, then shortly after this function
14869 returns, reloc offsets and addends for this section will be
14870 adjusted. Worse, reloc symbol indices will be for the output
14871 file rather than the input. Save a copy of the relocs for
14872 opd_entry_value. */
14873 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14876 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14877 rel
= bfd_alloc (input_bfd
, amt
);
14878 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
14879 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
14882 memcpy (rel
, relocs
, amt
);
14887 /* Adjust the value of any local symbols in opd sections. */
14890 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14891 const char *name ATTRIBUTE_UNUSED
,
14892 Elf_Internal_Sym
*elfsym
,
14893 asection
*input_sec
,
14894 struct elf_link_hash_entry
*h
)
14896 struct _opd_sec_data
*opd
;
14903 opd
= get_opd_info (input_sec
);
14904 if (opd
== NULL
|| opd
->adjust
== NULL
)
14907 value
= elfsym
->st_value
- input_sec
->output_offset
;
14908 if (!info
->relocatable
)
14909 value
-= input_sec
->output_section
->vma
;
14911 adjust
= opd
->adjust
[OPD_NDX (value
)];
14915 elfsym
->st_value
+= adjust
;
14919 /* Finish up dynamic symbol handling. We set the contents of various
14920 dynamic sections here. */
14923 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14924 struct bfd_link_info
*info
,
14925 struct elf_link_hash_entry
*h
,
14926 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14928 struct ppc_link_hash_table
*htab
;
14929 struct plt_entry
*ent
;
14930 Elf_Internal_Rela rela
;
14933 htab
= ppc_hash_table (info
);
14937 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14938 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14940 /* This symbol has an entry in the procedure linkage
14941 table. Set it up. */
14942 if (!htab
->elf
.dynamic_sections_created
14943 || h
->dynindx
== -1)
14945 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14947 && (h
->root
.type
== bfd_link_hash_defined
14948 || h
->root
.type
== bfd_link_hash_defweak
));
14949 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
14950 + htab
->elf
.iplt
->output_offset
14951 + ent
->plt
.offset
);
14953 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14955 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14956 rela
.r_addend
= (h
->root
.u
.def
.value
14957 + h
->root
.u
.def
.section
->output_offset
14958 + h
->root
.u
.def
.section
->output_section
->vma
14960 loc
= (htab
->elf
.irelplt
->contents
14961 + (htab
->elf
.irelplt
->reloc_count
++
14962 * sizeof (Elf64_External_Rela
)));
14966 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
14967 + htab
->elf
.splt
->output_offset
14968 + ent
->plt
.offset
);
14969 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14970 rela
.r_addend
= ent
->addend
;
14971 loc
= (htab
->elf
.srelplt
->contents
14972 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
14973 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
14975 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14977 if (!htab
->opd_abi
)
14979 if (!h
->def_regular
)
14981 /* Mark the symbol as undefined, rather than as
14982 defined in glink. Leave the value if there were
14983 any relocations where pointer equality matters
14984 (this is a clue for the dynamic linker, to make
14985 function pointer comparisons work between an
14986 application and shared library), otherwise set it
14988 sym
->st_shndx
= SHN_UNDEF
;
14989 if (!h
->pointer_equality_needed
)
14991 else if (!h
->ref_regular_nonweak
)
14993 /* This breaks function pointer comparisons, but
14994 that is better than breaking tests for a NULL
14995 function pointer. */
15004 /* This symbol needs a copy reloc. Set it up. */
15006 if (h
->dynindx
== -1
15007 || (h
->root
.type
!= bfd_link_hash_defined
15008 && h
->root
.type
!= bfd_link_hash_defweak
)
15009 || htab
->relbss
== NULL
)
15012 rela
.r_offset
= (h
->root
.u
.def
.value
15013 + h
->root
.u
.def
.section
->output_section
->vma
15014 + h
->root
.u
.def
.section
->output_offset
);
15015 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
15017 loc
= htab
->relbss
->contents
;
15018 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
15019 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
15025 /* Used to decide how to sort relocs in an optimal manner for the
15026 dynamic linker, before writing them out. */
15028 static enum elf_reloc_type_class
15029 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
15030 const asection
*rel_sec
,
15031 const Elf_Internal_Rela
*rela
)
15033 enum elf_ppc64_reloc_type r_type
;
15034 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
15036 if (rel_sec
== htab
->elf
.irelplt
)
15037 return reloc_class_ifunc
;
15039 r_type
= ELF64_R_TYPE (rela
->r_info
);
15042 case R_PPC64_RELATIVE
:
15043 return reloc_class_relative
;
15044 case R_PPC64_JMP_SLOT
:
15045 return reloc_class_plt
;
15047 return reloc_class_copy
;
15049 return reloc_class_normal
;
15053 /* Finish up the dynamic sections. */
15056 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
15057 struct bfd_link_info
*info
)
15059 struct ppc_link_hash_table
*htab
;
15063 htab
= ppc_hash_table (info
);
15067 dynobj
= htab
->elf
.dynobj
;
15068 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
15070 if (htab
->elf
.dynamic_sections_created
)
15072 Elf64_External_Dyn
*dyncon
, *dynconend
;
15074 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15077 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15078 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15079 for (; dyncon
< dynconend
; dyncon
++)
15081 Elf_Internal_Dyn dyn
;
15084 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15091 case DT_PPC64_GLINK
:
15093 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15094 /* We stupidly defined DT_PPC64_GLINK to be the start
15095 of glink rather than the first entry point, which is
15096 what ld.so needs, and now have a bigger stub to
15097 support automatic multiple TOCs. */
15098 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15102 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15105 dyn
.d_un
.d_ptr
= s
->vma
;
15109 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15110 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15113 case DT_PPC64_OPDSZ
:
15114 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15117 dyn
.d_un
.d_val
= s
->size
;
15121 s
= htab
->elf
.splt
;
15122 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15126 s
= htab
->elf
.srelplt
;
15127 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15131 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15135 /* Don't count procedure linkage table relocs in the
15136 overall reloc count. */
15137 s
= htab
->elf
.srelplt
;
15140 dyn
.d_un
.d_val
-= s
->size
;
15144 /* We may not be using the standard ELF linker script.
15145 If .rela.plt is the first .rela section, we adjust
15146 DT_RELA to not include it. */
15147 s
= htab
->elf
.srelplt
;
15150 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
15152 dyn
.d_un
.d_ptr
+= s
->size
;
15156 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15160 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15162 /* Fill in the first entry in the global offset table.
15163 We use it to hold the link-time TOCbase. */
15164 bfd_put_64 (output_bfd
,
15165 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15166 htab
->elf
.sgot
->contents
);
15168 /* Set .got entry size. */
15169 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15172 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15174 /* Set .plt entry size. */
15175 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15176 = PLT_ENTRY_SIZE (htab
);
15179 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15180 brlt ourselves if emitrelocations. */
15181 if (htab
->brlt
!= NULL
15182 && htab
->brlt
->reloc_count
!= 0
15183 && !_bfd_elf_link_output_relocs (output_bfd
,
15185 elf_section_data (htab
->brlt
)->rela
.hdr
,
15186 elf_section_data (htab
->brlt
)->relocs
,
15190 if (htab
->glink
!= NULL
15191 && htab
->glink
->reloc_count
!= 0
15192 && !_bfd_elf_link_output_relocs (output_bfd
,
15194 elf_section_data (htab
->glink
)->rela
.hdr
,
15195 elf_section_data (htab
->glink
)->relocs
,
15199 if (htab
->glink_eh_frame
!= NULL
15200 && htab
->glink_eh_frame
->size
!= 0)
15204 asection
*stub_sec
;
15206 p
= htab
->glink_eh_frame
->contents
+ sizeof (glink_eh_frame_cie
);
15207 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
15209 stub_sec
= stub_sec
->next
)
15210 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
15216 /* Offset to stub section. */
15217 val
= (stub_sec
->output_section
->vma
15218 + stub_sec
->output_offset
);
15219 val
-= (htab
->glink_eh_frame
->output_section
->vma
15220 + htab
->glink_eh_frame
->output_offset
15221 + (p
- htab
->glink_eh_frame
->contents
));
15222 if (val
+ 0x80000000 > 0xffffffff)
15224 info
->callbacks
->einfo
15225 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15229 bfd_put_32 (dynobj
, val
, p
);
15231 /* stub section size. */
15233 /* Augmentation. */
15238 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
15244 /* Offset to .glink. */
15245 val
= (htab
->glink
->output_section
->vma
15246 + htab
->glink
->output_offset
15248 val
-= (htab
->glink_eh_frame
->output_section
->vma
15249 + htab
->glink_eh_frame
->output_offset
15250 + (p
- htab
->glink_eh_frame
->contents
));
15251 if (val
+ 0x80000000 > 0xffffffff)
15253 info
->callbacks
->einfo
15254 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15255 htab
->glink
->name
);
15258 bfd_put_32 (dynobj
, val
, p
);
15262 /* Augmentation. */
15268 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15269 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15270 htab
->glink_eh_frame
,
15271 htab
->glink_eh_frame
->contents
))
15275 /* We need to handle writing out multiple GOT sections ourselves,
15276 since we didn't add them to DYNOBJ. We know dynobj is the first
15278 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15282 if (!is_ppc64_elf (dynobj
))
15285 s
= ppc64_elf_tdata (dynobj
)->got
;
15288 && s
->output_section
!= bfd_abs_section_ptr
15289 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15290 s
->contents
, s
->output_offset
,
15293 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15296 && s
->output_section
!= bfd_abs_section_ptr
15297 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15298 s
->contents
, s
->output_offset
,
15306 #include "elf64-target.h"
15308 /* FreeBSD support */
15310 #undef TARGET_LITTLE_SYM
15311 #undef TARGET_LITTLE_NAME
15313 #undef TARGET_BIG_SYM
15314 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15315 #undef TARGET_BIG_NAME
15316 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15319 #define ELF_OSABI ELFOSABI_FREEBSD
15322 #define elf64_bed elf64_powerpc_fbsd_bed
15324 #include "elf64-target.h"