1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2014 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 0x1000
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 2, /* 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 struct _opd_sec_data
2960 /* Points to the function code section for local opd entries. */
2961 asection
**func_sec
;
2963 /* After editing .opd, adjust references to opd local syms. */
2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2973 /* And the relocation addend. */
2978 enum _ppc64_sec_type sec_type
:2;
2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch
:1;
2985 #define ppc64_elf_section_data(sec) \
2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2989 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2991 if (!sec
->used_by_bfd
)
2993 struct _ppc64_elf_section_data
*sdata
;
2994 bfd_size_type amt
= sizeof (*sdata
);
2996 sdata
= bfd_zalloc (abfd
, amt
);
2999 sec
->used_by_bfd
= sdata
;
3002 return _bfd_elf_new_section_hook (abfd
, sec
);
3005 static struct _opd_sec_data
*
3006 get_opd_info (asection
* sec
)
3009 && ppc64_elf_section_data (sec
) != NULL
3010 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
3011 return &ppc64_elf_section_data (sec
)->u
.opd
;
3015 /* Parameters for the qsort hook. */
3016 static bfd_boolean synthetic_relocatable
;
3018 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3021 compare_symbols (const void *ap
, const void *bp
)
3023 const asymbol
*a
= * (const asymbol
**) ap
;
3024 const asymbol
*b
= * (const asymbol
**) bp
;
3026 /* Section symbols first. */
3027 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
3029 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
3032 /* then .opd symbols. */
3033 if (strcmp (a
->section
->name
, ".opd") == 0
3034 && strcmp (b
->section
->name
, ".opd") != 0)
3036 if (strcmp (a
->section
->name
, ".opd") != 0
3037 && strcmp (b
->section
->name
, ".opd") == 0)
3040 /* then other code symbols. */
3041 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3042 == (SEC_CODE
| SEC_ALLOC
)
3043 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3044 != (SEC_CODE
| SEC_ALLOC
))
3047 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3048 != (SEC_CODE
| SEC_ALLOC
)
3049 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3050 == (SEC_CODE
| SEC_ALLOC
))
3053 if (synthetic_relocatable
)
3055 if (a
->section
->id
< b
->section
->id
)
3058 if (a
->section
->id
> b
->section
->id
)
3062 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
3065 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
3073 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
3076 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
3079 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
3082 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
3085 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
3088 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
3091 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
3097 /* Search SYMS for a symbol of the given VALUE. */
3100 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
3108 mid
= (lo
+ hi
) >> 1;
3109 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
3111 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
3121 mid
= (lo
+ hi
) >> 1;
3122 if (syms
[mid
]->section
->id
< id
)
3124 else if (syms
[mid
]->section
->id
> id
)
3126 else if (syms
[mid
]->value
< value
)
3128 else if (syms
[mid
]->value
> value
)
3138 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
3140 bfd_vma vma
= *(bfd_vma
*) ptr
;
3141 return ((section
->flags
& SEC_ALLOC
) != 0
3142 && section
->vma
<= vma
3143 && vma
< section
->vma
+ section
->size
);
3146 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3147 entry syms. Also generate @plt symbols for the glink branch table. */
3150 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
3151 long static_count
, asymbol
**static_syms
,
3152 long dyn_count
, asymbol
**dyn_syms
,
3159 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
3160 asection
*opd
= NULL
;
3161 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
3163 int abi
= abiversion (abfd
);
3169 opd
= bfd_get_section_by_name (abfd
, ".opd");
3170 if (opd
== NULL
&& abi
== 1)
3174 symcount
= static_count
;
3176 symcount
+= dyn_count
;
3180 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3184 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3186 /* Use both symbol tables. */
3187 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3188 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3190 else if (!relocatable
&& static_count
== 0)
3191 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3193 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3195 synthetic_relocatable
= relocatable
;
3196 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3198 if (!relocatable
&& symcount
> 1)
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3203 different values, so trim any with the same value. */
3204 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3205 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3206 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3207 syms
[j
++] = syms
[i
];
3212 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3216 for (; i
< symcount
; ++i
)
3217 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3218 != (SEC_CODE
| SEC_ALLOC
))
3219 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3223 for (; i
< symcount
; ++i
)
3224 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3228 for (; i
< symcount
; ++i
)
3229 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3233 for (; i
< symcount
; ++i
)
3234 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3235 != (SEC_CODE
| SEC_ALLOC
))
3243 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3248 if (opdsymend
== secsymend
)
3251 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3252 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3256 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3263 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3267 while (r
< opd
->relocation
+ relcount
3268 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3271 if (r
== opd
->relocation
+ relcount
)
3274 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3277 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3280 sym
= *r
->sym_ptr_ptr
;
3281 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3282 sym
->section
->id
, sym
->value
+ r
->addend
))
3285 size
+= sizeof (asymbol
);
3286 size
+= strlen (syms
[i
]->name
) + 2;
3290 s
= *ret
= bfd_malloc (size
);
3297 names
= (char *) (s
+ count
);
3299 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3303 while (r
< opd
->relocation
+ relcount
3304 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3307 if (r
== opd
->relocation
+ relcount
)
3310 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3313 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3316 sym
= *r
->sym_ptr_ptr
;
3317 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3318 sym
->section
->id
, sym
->value
+ r
->addend
))
3323 s
->flags
|= BSF_SYNTHETIC
;
3324 s
->section
= sym
->section
;
3325 s
->value
= sym
->value
+ r
->addend
;
3328 len
= strlen (syms
[i
]->name
);
3329 memcpy (names
, syms
[i
]->name
, len
+ 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s
->udata
.p
= syms
[i
];
3340 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3341 bfd_byte
*contents
= NULL
;
3344 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3345 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3348 if (opd
!= NULL
&& !bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3350 free_contents_and_exit
:
3358 for (i
= secsymend
; i
< opdsymend
; ++i
)
3362 /* Ignore bogus symbols. */
3363 if (syms
[i
]->value
> opd
->size
- 8)
3366 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3367 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3370 size
+= sizeof (asymbol
);
3371 size
+= strlen (syms
[i
]->name
) + 2;
3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3377 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3379 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3381 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3383 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3384 goto free_contents_and_exit
;
3386 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3387 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3390 extdynend
= extdyn
+ dynamic
->size
;
3391 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3393 Elf_Internal_Dyn dyn
;
3394 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3396 if (dyn
.d_tag
== DT_NULL
)
3399 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma
= dyn
.d_un
.d_val
+ GLINK_CALL_STUB_SIZE
- 8 * 4;
3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3421 unsigned int off
= 0;
3423 while (bfd_get_section_contents (abfd
, glink
, buf
,
3424 glink_vma
+ off
- glink
->vma
, 4))
3426 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3428 if ((insn
& ~0x3fffffc) == 0)
3430 resolv_vma
= glink_vma
+ off
+ (insn
^ 0x2000000) - 0x2000000;
3439 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3441 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3444 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3445 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3446 goto free_contents_and_exit
;
3448 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3449 size
+= plt_count
* sizeof (asymbol
);
3451 p
= relplt
->relocation
;
3452 for (i
= 0; i
< plt_count
; i
++, p
++)
3454 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3456 size
+= sizeof ("+0x") - 1 + 16;
3461 s
= *ret
= bfd_malloc (size
);
3463 goto free_contents_and_exit
;
3465 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3467 for (i
= secsymend
; i
< opdsymend
; ++i
)
3471 if (syms
[i
]->value
> opd
->size
- 8)
3474 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3475 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3479 asection
*sec
= abfd
->sections
;
3486 long mid
= (lo
+ hi
) >> 1;
3487 if (syms
[mid
]->section
->vma
< ent
)
3489 else if (syms
[mid
]->section
->vma
> ent
)
3493 sec
= syms
[mid
]->section
;
3498 if (lo
>= hi
&& lo
> codesecsym
)
3499 sec
= syms
[lo
- 1]->section
;
3501 for (; sec
!= NULL
; sec
= sec
->next
)
3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3507 if ((sec
->flags
& SEC_ALLOC
) == 0)
3509 if ((sec
->flags
& SEC_CODE
) != 0)
3512 s
->flags
|= BSF_SYNTHETIC
;
3513 s
->value
= ent
- s
->section
->vma
;
3516 len
= strlen (syms
[i
]->name
);
3517 memcpy (names
, syms
[i
]->name
, len
+ 1);
3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s
->udata
.p
= syms
[i
];
3527 if (glink
!= NULL
&& relplt
!= NULL
)
3531 /* Add a symbol for the main glink trampoline. */
3532 memset (s
, 0, sizeof *s
);
3534 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3536 s
->value
= resolv_vma
- glink
->vma
;
3538 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names
+= sizeof ("__glink_PLTresolve");
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p
= relplt
->relocation
;
3561 for (i
= 0; i
< plt_count
; i
++, p
++)
3565 *s
= **p
->sym_ptr_ptr
;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s
->flags
& BSF_LOCAL
) == 0)
3569 s
->flags
|= BSF_GLOBAL
;
3570 s
->flags
|= BSF_SYNTHETIC
;
3572 s
->value
= glink_vma
- glink
->vma
;
3575 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3576 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3580 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3581 names
+= sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3583 names
+= strlen (names
);
3585 memcpy (names
, "@plt", sizeof ("@plt"));
3586 names
+= sizeof ("@plt");
3606 /* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3623 The function definition in another object file might be:
3627 . .quad .TOC.@tocbase
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
3672 definition from some other object, eg. a static library.
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
3678 /* Of those relocs that might be copied as dynamic relocs, this function
3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
3683 must_be_dyn_reloc (struct bfd_link_info
*info
,
3684 enum elf_ppc64_reloc_type r_type
)
3696 case R_PPC64_TPREL16
:
3697 case R_PPC64_TPREL16_LO
:
3698 case R_PPC64_TPREL16_HI
:
3699 case R_PPC64_TPREL16_HA
:
3700 case R_PPC64_TPREL16_DS
:
3701 case R_PPC64_TPREL16_LO_DS
:
3702 case R_PPC64_TPREL16_HIGH
:
3703 case R_PPC64_TPREL16_HIGHA
:
3704 case R_PPC64_TPREL16_HIGHER
:
3705 case R_PPC64_TPREL16_HIGHERA
:
3706 case R_PPC64_TPREL16_HIGHEST
:
3707 case R_PPC64_TPREL16_HIGHESTA
:
3708 case R_PPC64_TPREL64
:
3709 return !info
->executable
;
3713 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3724 redefines the function descriptor symbol to point to the copy. This
3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
3728 #define ELIMINATE_COPY_RELOCS 1
3730 /* Section name for stubs is the associated section name plus this
3732 #define STUB_SUFFIX ".stub"
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
3781 enum ppc_stub_type
{
3783 ppc_stub_long_branch
,
3784 ppc_stub_long_branch_r2off
,
3785 ppc_stub_plt_branch
,
3786 ppc_stub_plt_branch_r2off
,
3788 ppc_stub_plt_call_r2save
,
3789 ppc_stub_global_entry
3792 struct ppc_stub_hash_entry
{
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root
;
3797 enum ppc_stub_type stub_type
;
3799 /* The stub section. */
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset
;
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value
;
3808 asection
*target_section
;
3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry
*h
;
3812 struct plt_entry
*plt_ent
;
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3818 /* Symbol st_other. */
3819 unsigned char other
;
3822 struct ppc_branch_hash_entry
{
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root
;
3827 /* Offset within branch lookup table. */
3828 unsigned int offset
;
3830 /* Generation marker. */
3834 /* Used to track dynamic relocations for local symbols. */
3835 struct ppc_dyn_relocs
3837 struct ppc_dyn_relocs
*next
;
3839 /* The input section of the reloc. */
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count
: 31;
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc
: 1;
3849 struct ppc_link_hash_entry
3851 struct elf_link_hash_entry elf
;
3854 /* A pointer to the most recently used stub hash entry against this
3856 struct ppc_stub_hash_entry
*stub_cache
;
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry
*next_dot_sym
;
3862 /* Track dynamic relocs copied for this symbol. */
3863 struct elf_dyn_relocs
*dyn_relocs
;
3865 /* Link between function code and descriptor symbols. */
3866 struct ppc_link_hash_entry
*oh
;
3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func
:1;
3870 unsigned int is_func_descriptor
:1;
3871 unsigned int fake
:1;
3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
3876 unsigned int adjust_done
:1;
3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined
:1;
3881 /* Contexts in which symbol is used in the GOT (or TOC).
3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889 #define TLS_GD 1 /* GD reloc. */
3890 #define TLS_LD 2 /* LD reloc. */
3891 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893 #define TLS_TLS 16 /* Any TLS reloc. */
3894 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3896 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3897 unsigned char tls_mask
;
3900 /* ppc64 ELF linker hash table. */
3902 struct ppc_link_hash_table
3904 struct elf_link_hash_table elf
;
3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table
;
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table
;
3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab
;
3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params
*params
;
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3921 /* This is the section to which stubs in the group will be attached. */
3923 /* The stub section. */
3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3929 /* Temp used when calculating TOC pointers. */
3932 asection
*toc_first_sec
;
3934 /* Highest input section id. */
3937 /* Highest output section index. */
3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry
*dot_syms
;
3943 /* List of input sections for each output section. */
3944 asection
**input_list
;
3946 /* Shortcuts to get to dynamic linker sections. */
3953 asection
*glink_eh_frame
;
3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry
*tls_get_addr
;
3957 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size
;
3963 unsigned long stub_count
[ppc_stub_global_entry
];
3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals
;
3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi
:1;
3971 /* Support for multiple toc sections. */
3972 unsigned int do_multi_toc
:1;
3973 unsigned int multi_toc_needed
:1;
3974 unsigned int second_toc_pass
:1;
3975 unsigned int do_toc_opt
:1;
3978 unsigned int stub_error
:1;
3980 /* Temp used by ppc64_elf_before_check_relocs. */
3981 unsigned int twiddled_syms
:1;
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration
;
3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache
;
3990 /* Rename some of the generic section flags to better document how they
3993 /* Nonzero if this section has TLS related relocations. */
3994 #define has_tls_reloc sec_flg0
3996 /* Nonzero if this section has a call to __tls_get_addr. */
3997 #define has_tls_get_addr_call sec_flg1
3999 /* Nonzero if this section has any toc or got relocs. */
4000 #define has_toc_reloc sec_flg2
4002 /* Nonzero if this section has a call to another section that uses
4004 #define makes_toc_func_call sec_flg3
4006 /* Recursion protection when determining above flag. */
4007 #define call_check_in_progress sec_flg4
4008 #define call_check_done sec_flg5
4010 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4012 #define ppc_hash_table(p) \
4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4016 #define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4020 #define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4024 /* Create an entry in the stub hash table. */
4026 static struct bfd_hash_entry
*
4027 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
4028 struct bfd_hash_table
*table
,
4031 /* Allocate the structure if it has not already been allocated by a
4035 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
4040 /* Call the allocation method of the superclass. */
4041 entry
= bfd_hash_newfunc (entry
, table
, string
);
4044 struct ppc_stub_hash_entry
*eh
;
4046 /* Initialize the local fields. */
4047 eh
= (struct ppc_stub_hash_entry
*) entry
;
4048 eh
->stub_type
= ppc_stub_none
;
4049 eh
->stub_sec
= NULL
;
4050 eh
->stub_offset
= 0;
4051 eh
->target_value
= 0;
4052 eh
->target_section
= NULL
;
4062 /* Create an entry in the branch hash table. */
4064 static struct bfd_hash_entry
*
4065 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
4066 struct bfd_hash_table
*table
,
4069 /* Allocate the structure if it has not already been allocated by a
4073 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
4078 /* Call the allocation method of the superclass. */
4079 entry
= bfd_hash_newfunc (entry
, table
, string
);
4082 struct ppc_branch_hash_entry
*eh
;
4084 /* Initialize the local fields. */
4085 eh
= (struct ppc_branch_hash_entry
*) entry
;
4093 /* Create an entry in a ppc64 ELF linker hash table. */
4095 static struct bfd_hash_entry
*
4096 link_hash_newfunc (struct bfd_hash_entry
*entry
,
4097 struct bfd_hash_table
*table
,
4100 /* Allocate the structure if it has not already been allocated by a
4104 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
4109 /* Call the allocation method of the superclass. */
4110 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
4113 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
4115 memset (&eh
->u
.stub_cache
, 0,
4116 (sizeof (struct ppc_link_hash_entry
)
4117 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4127 A new object defines "foo" and references "bar".
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4133 Keep a list of newly added dot-symbols. */
4135 if (string
[0] == '.')
4137 struct ppc_link_hash_table
*htab
;
4139 htab
= (struct ppc_link_hash_table
*) table
;
4140 eh
->u
.next_dot_sym
= htab
->dot_syms
;
4141 htab
->dot_syms
= eh
;
4148 struct tocsave_entry
{
4154 tocsave_htab_hash (const void *p
)
4156 const struct tocsave_entry
*e
= (const struct tocsave_entry
*) p
;
4157 return ((bfd_vma
)(intptr_t) e
->sec
^ e
->offset
) >> 3;
4161 tocsave_htab_eq (const void *p1
, const void *p2
)
4163 const struct tocsave_entry
*e1
= (const struct tocsave_entry
*) p1
;
4164 const struct tocsave_entry
*e2
= (const struct tocsave_entry
*) p2
;
4165 return e1
->sec
== e2
->sec
&& e1
->offset
== e2
->offset
;
4168 /* Destroy a ppc64 ELF linker hash table. */
4171 ppc64_elf_link_hash_table_free (bfd
*obfd
)
4173 struct ppc_link_hash_table
*htab
;
4175 htab
= (struct ppc_link_hash_table
*) obfd
->link
.hash
;
4176 if (htab
->tocsave_htab
)
4177 htab_delete (htab
->tocsave_htab
);
4178 bfd_hash_table_free (&htab
->branch_hash_table
);
4179 bfd_hash_table_free (&htab
->stub_hash_table
);
4180 _bfd_elf_link_hash_table_free (obfd
);
4183 /* Create a ppc64 ELF linker hash table. */
4185 static struct bfd_link_hash_table
*
4186 ppc64_elf_link_hash_table_create (bfd
*abfd
)
4188 struct ppc_link_hash_table
*htab
;
4189 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
4191 htab
= bfd_zmalloc (amt
);
4195 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
4196 sizeof (struct ppc_link_hash_entry
),
4203 /* Init the stub hash table too. */
4204 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
4205 sizeof (struct ppc_stub_hash_entry
)))
4207 _bfd_elf_link_hash_table_free (abfd
);
4211 /* And the branch hash table. */
4212 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
4213 sizeof (struct ppc_branch_hash_entry
)))
4215 bfd_hash_table_free (&htab
->stub_hash_table
);
4216 _bfd_elf_link_hash_table_free (abfd
);
4220 htab
->tocsave_htab
= htab_try_create (1024,
4224 if (htab
->tocsave_htab
== NULL
)
4226 ppc64_elf_link_hash_table_free (abfd
);
4229 htab
->elf
.root
.hash_table_free
= ppc64_elf_link_hash_table_free
;
4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
4235 htab
->elf
.init_got_refcount
.refcount
= 0;
4236 htab
->elf
.init_got_refcount
.glist
= NULL
;
4237 htab
->elf
.init_plt_refcount
.refcount
= 0;
4238 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4239 htab
->elf
.init_got_offset
.offset
= 0;
4240 htab
->elf
.init_got_offset
.glist
= NULL
;
4241 htab
->elf
.init_plt_offset
.offset
= 0;
4242 htab
->elf
.init_plt_offset
.glist
= NULL
;
4244 return &htab
->elf
.root
;
4247 /* Create sections for linker generated code. */
4250 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4252 struct ppc_link_hash_table
*htab
;
4255 htab
= ppc_hash_table (info
);
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4259 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4260 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4262 if (htab
->sfpr
== NULL
4263 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4269 if (htab
->glink
== NULL
4270 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4273 if (!info
->no_ld_generated_unwind_info
)
4275 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4277 htab
->glink_eh_frame
= bfd_make_section_anyway_with_flags (dynobj
,
4280 if (htab
->glink_eh_frame
== NULL
4281 || !bfd_set_section_alignment (dynobj
, htab
->glink_eh_frame
, 2))
4285 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4286 htab
->elf
.iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4287 if (htab
->elf
.iplt
== NULL
4288 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.iplt
, 3))
4291 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4292 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4294 = bfd_make_section_anyway_with_flags (dynobj
, ".rela.iplt", flags
);
4295 if (htab
->elf
.irelplt
== NULL
4296 || ! bfd_set_section_alignment (dynobj
, htab
->elf
.irelplt
, 3))
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags
= (SEC_ALLOC
| SEC_LOAD
4301 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4302 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4304 if (htab
->brlt
== NULL
4305 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4311 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4312 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4313 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4316 if (htab
->relbrlt
== NULL
4317 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4323 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4326 ppc64_elf_init_stub_bfd (struct bfd_link_info
*info
,
4327 struct ppc64_elf_params
*params
)
4329 struct ppc_link_hash_table
*htab
;
4331 elf_elfheader (params
->stub_bfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4333 /* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab
= ppc_hash_table (info
);
4339 htab
->elf
.dynobj
= params
->stub_bfd
;
4340 htab
->params
= params
;
4342 if (info
->relocatable
)
4345 return create_linkage_sections (htab
->elf
.dynobj
, info
);
4348 /* Build a name for an entry in the stub hash table. */
4351 ppc_stub_name (const asection
*input_section
,
4352 const asection
*sym_sec
,
4353 const struct ppc_link_hash_entry
*h
,
4354 const Elf_Internal_Rela
*rel
)
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4366 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4367 stub_name
= bfd_malloc (len
);
4368 if (stub_name
== NULL
)
4371 len
= sprintf (stub_name
, "%08x.%s+%x",
4372 input_section
->id
& 0xffffffff,
4373 h
->elf
.root
.root
.string
,
4374 (int) rel
->r_addend
& 0xffffffff);
4378 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4379 stub_name
= bfd_malloc (len
);
4380 if (stub_name
== NULL
)
4383 len
= sprintf (stub_name
, "%08x.%x:%x+%x",
4384 input_section
->id
& 0xffffffff,
4385 sym_sec
->id
& 0xffffffff,
4386 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4387 (int) rel
->r_addend
& 0xffffffff);
4389 if (len
> 2 && stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4390 stub_name
[len
- 2] = 0;
4394 /* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4397 static struct ppc_stub_hash_entry
*
4398 ppc_get_stub_entry (const asection
*input_section
,
4399 const asection
*sym_sec
,
4400 struct ppc_link_hash_entry
*h
,
4401 const Elf_Internal_Rela
*rel
,
4402 struct ppc_link_hash_table
*htab
)
4404 struct ppc_stub_hash_entry
*stub_entry
;
4405 const asection
*id_sec
;
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4414 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4415 && h
->u
.stub_cache
->h
== h
4416 && h
->u
.stub_cache
->id_sec
== id_sec
)
4418 stub_entry
= h
->u
.stub_cache
;
4424 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4425 if (stub_name
== NULL
)
4428 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4429 stub_name
, FALSE
, FALSE
);
4431 h
->u
.stub_cache
= stub_entry
;
4439 /* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4442 static struct ppc_stub_hash_entry
*
4443 ppc_add_stub (const char *stub_name
,
4445 struct bfd_link_info
*info
)
4447 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4450 struct ppc_stub_hash_entry
*stub_entry
;
4452 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4453 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4454 if (stub_sec
== NULL
)
4456 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4457 if (stub_sec
== NULL
)
4463 namelen
= strlen (link_sec
->name
);
4464 len
= namelen
+ sizeof (STUB_SUFFIX
);
4465 s_name
= bfd_alloc (htab
->params
->stub_bfd
, len
);
4469 memcpy (s_name
, link_sec
->name
, namelen
);
4470 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4471 stub_sec
= (*htab
->params
->add_stub_section
) (s_name
, link_sec
);
4472 if (stub_sec
== NULL
)
4474 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4476 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4482 if (stub_entry
== NULL
)
4484 info
->callbacks
->einfo (_("%P: %B: cannot create stub entry %s\n"),
4485 section
->owner
, stub_name
);
4489 stub_entry
->stub_sec
= stub_sec
;
4490 stub_entry
->stub_offset
= 0;
4491 stub_entry
->id_sec
= link_sec
;
4495 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
4499 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4501 asection
*got
, *relgot
;
4503 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4505 if (!is_ppc64_elf (abfd
))
4511 && !_bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4514 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED
);
4517 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4519 || !bfd_set_section_alignment (abfd
, got
, 3))
4522 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4523 flags
| SEC_READONLY
);
4525 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4528 ppc64_elf_tdata (abfd
)->got
= got
;
4529 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4533 /* Create the dynamic sections, and set up shortcuts. */
4536 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4538 struct ppc_link_hash_table
*htab
;
4540 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4543 htab
= ppc_hash_table (info
);
4547 htab
->dynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
4549 htab
->relbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
4551 if (!htab
->elf
.sgot
|| !htab
->elf
.splt
|| !htab
->elf
.srelplt
|| !htab
->dynbss
4552 || (!info
->shared
&& !htab
->relbss
))
4558 /* Follow indirect and warning symbol links. */
4560 static inline struct bfd_link_hash_entry
*
4561 follow_link (struct bfd_link_hash_entry
*h
)
4563 while (h
->type
== bfd_link_hash_indirect
4564 || h
->type
== bfd_link_hash_warning
)
4569 static inline struct elf_link_hash_entry
*
4570 elf_follow_link (struct elf_link_hash_entry
*h
)
4572 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4575 static inline struct ppc_link_hash_entry
*
4576 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4578 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4581 /* Merge PLT info on FROM with that on TO. */
4584 move_plt_plist (struct ppc_link_hash_entry
*from
,
4585 struct ppc_link_hash_entry
*to
)
4587 if (from
->elf
.plt
.plist
!= NULL
)
4589 if (to
->elf
.plt
.plist
!= NULL
)
4591 struct plt_entry
**entp
;
4592 struct plt_entry
*ent
;
4594 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4596 struct plt_entry
*dent
;
4598 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4599 if (dent
->addend
== ent
->addend
)
4601 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4608 *entp
= to
->elf
.plt
.plist
;
4611 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4612 from
->elf
.plt
.plist
= NULL
;
4616 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4619 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4620 struct elf_link_hash_entry
*dir
,
4621 struct elf_link_hash_entry
*ind
)
4623 struct ppc_link_hash_entry
*edir
, *eind
;
4625 edir
= (struct ppc_link_hash_entry
*) dir
;
4626 eind
= (struct ppc_link_hash_entry
*) ind
;
4628 edir
->is_func
|= eind
->is_func
;
4629 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4630 edir
->tls_mask
|= eind
->tls_mask
;
4631 if (eind
->oh
!= NULL
)
4632 edir
->oh
= ppc_follow_link (eind
->oh
);
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4639 && edir
->elf
.dynamic_adjusted
))
4640 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4642 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4643 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4644 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4645 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4646 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
4649 if (eind
->dyn_relocs
!= NULL
)
4651 if (edir
->dyn_relocs
!= NULL
)
4653 struct elf_dyn_relocs
**pp
;
4654 struct elf_dyn_relocs
*p
;
4656 /* Add reloc counts against the indirect sym to the direct sym
4657 list. Merge any entries against the same section. */
4658 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4660 struct elf_dyn_relocs
*q
;
4662 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4663 if (q
->sec
== p
->sec
)
4665 q
->pc_count
+= p
->pc_count
;
4666 q
->count
+= p
->count
;
4673 *pp
= edir
->dyn_relocs
;
4676 edir
->dyn_relocs
= eind
->dyn_relocs
;
4677 eind
->dyn_relocs
= NULL
;
4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4687 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
4692 if (eind
->elf
.got
.glist
!= NULL
)
4694 if (edir
->elf
.got
.glist
!= NULL
)
4696 struct got_entry
**entp
;
4697 struct got_entry
*ent
;
4699 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4701 struct got_entry
*dent
;
4703 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4704 if (dent
->addend
== ent
->addend
4705 && dent
->owner
== ent
->owner
4706 && dent
->tls_type
== ent
->tls_type
)
4708 dent
->got
.refcount
+= ent
->got
.refcount
;
4715 *entp
= edir
->elf
.got
.glist
;
4718 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4719 eind
->elf
.got
.glist
= NULL
;
4722 /* And plt entries. */
4723 move_plt_plist (eind
, edir
);
4725 if (eind
->elf
.dynindx
!= -1)
4727 if (edir
->elf
.dynindx
!= -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4729 edir
->elf
.dynstr_index
);
4730 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4731 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4732 eind
->elf
.dynindx
= -1;
4733 eind
->elf
.dynstr_index
= 0;
4737 /* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4740 static struct ppc_link_hash_entry
*
4741 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4743 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4747 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4749 fdh
= (struct ppc_link_hash_entry
*)
4750 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4754 fdh
->is_func_descriptor
= 1;
4760 return ppc_follow_link (fdh
);
4763 /* Make a fake function descriptor sym for the code sym FH. */
4765 static struct ppc_link_hash_entry
*
4766 make_fdh (struct bfd_link_info
*info
,
4767 struct ppc_link_hash_entry
*fh
)
4771 struct bfd_link_hash_entry
*bh
;
4772 struct ppc_link_hash_entry
*fdh
;
4774 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4775 newsym
= bfd_make_empty_symbol (abfd
);
4776 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4777 newsym
->section
= bfd_und_section_ptr
;
4779 newsym
->flags
= BSF_WEAK
;
4782 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4783 newsym
->flags
, newsym
->section
,
4784 newsym
->value
, NULL
, FALSE
, FALSE
,
4788 fdh
= (struct ppc_link_hash_entry
*) bh
;
4789 fdh
->elf
.non_elf
= 0;
4791 fdh
->is_func_descriptor
= 1;
4798 /* Fix function descriptor symbols defined in .opd sections to be
4802 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4803 struct bfd_link_info
*info
,
4804 Elf_Internal_Sym
*isym
,
4806 flagword
*flags ATTRIBUTE_UNUSED
,
4808 bfd_vma
*value ATTRIBUTE_UNUSED
)
4810 if ((ibfd
->flags
& DYNAMIC
) == 0
4811 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4812 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4814 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4816 if ((ibfd
->flags
& DYNAMIC
) == 0)
4817 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4819 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4821 else if (*sec
!= NULL
4822 && strcmp ((*sec
)->name
, ".opd") == 0)
4823 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4825 if ((STO_PPC64_LOCAL_MASK
& isym
->st_other
) != 0)
4827 if (abiversion (ibfd
) == 0)
4828 set_abiversion (ibfd
, 2);
4829 else if (abiversion (ibfd
) == 1)
4831 info
->callbacks
->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name
);
4833 bfd_set_error (bfd_error_bad_value
);
4841 /* Merge non-visibility st_other attributes: local entry point. */
4844 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
4845 const Elf_Internal_Sym
*isym
,
4846 bfd_boolean definition
,
4847 bfd_boolean dynamic
)
4849 if (definition
&& !dynamic
)
4850 h
->other
= ((isym
->st_other
& ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h
->other
));
4854 /* This function makes an old ABI object reference to ".bar" cause the
4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
4859 static struct elf_link_hash_entry
*
4860 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4861 struct bfd_link_info
*info
,
4864 struct elf_link_hash_entry
*h
;
4868 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h
->root
.type
== bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4879 len
= strlen (name
);
4880 dot_name
= bfd_alloc (abfd
, len
+ 2);
4881 if (dot_name
== NULL
)
4882 return (struct elf_link_hash_entry
*) 0 - 1;
4884 memcpy (dot_name
+ 1, name
, len
+ 1);
4885 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4886 bfd_release (abfd
, dot_name
);
4890 /* This function satisfies all old ABI object references to ".bar" if a
4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
4900 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4902 struct ppc_link_hash_table
*htab
;
4903 struct ppc_link_hash_entry
*fdh
;
4905 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4908 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4909 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4911 if (eh
->elf
.root
.root
.string
[0] != '.')
4914 htab
= ppc_hash_table (info
);
4918 fdh
= lookup_fdh (eh
, htab
);
4921 if (!info
->relocatable
4922 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4923 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4924 && eh
->elf
.ref_regular
)
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh
= make_fdh (info
, eh
);
4932 fdh
->elf
.ref_regular
= 1;
4937 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4938 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4939 if (entry_vis
< descr_vis
)
4940 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4941 else if (entry_vis
> descr_vis
)
4942 eh
->elf
.other
+= descr_vis
- entry_vis
;
4944 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4945 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4946 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4948 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4949 eh
->was_undefined
= 1;
4950 htab
->twiddled_syms
= 1;
4957 /* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
4961 ppc64_elf_before_check_relocs (bfd
*ibfd
, struct bfd_link_info
*info
)
4963 struct ppc_link_hash_table
*htab
;
4964 struct ppc_link_hash_entry
**p
, *eh
;
4966 if (!is_ppc64_elf (info
->output_bfd
))
4968 htab
= ppc_hash_table (info
);
4972 if (is_ppc64_elf (ibfd
))
4974 asection
*opd
= bfd_get_section_by_name (ibfd
, ".opd");
4976 if (opd
!= NULL
&& opd
->size
!= 0)
4978 if (abiversion (ibfd
) == 0)
4979 set_abiversion (ibfd
, 1);
4980 else if (abiversion (ibfd
) == 2)
4982 info
->callbacks
->einfo (_("%P: %B .opd not allowed in ABI"
4984 ibfd
, abiversion (ibfd
));
4985 bfd_set_error (bfd_error_bad_value
);
4989 if ((ibfd
->flags
& DYNAMIC
) == 0
4990 && (opd
->flags
& SEC_RELOC
) != 0
4991 && opd
->reloc_count
!= 0
4992 && !bfd_is_abs_section (opd
->output_section
))
4994 /* Garbage collection needs some extra help with .opd sections.
4995 We don't want to necessarily keep everything referenced by
4996 relocs in .opd, as that would keep all functions. Instead,
4997 if we reference an .opd symbol (a function descriptor), we
4998 want to keep the function code symbol's section. This is
4999 easy for global symbols, but for local syms we need to keep
5000 information about the associated function section. */
5002 asection
**opd_sym_map
;
5004 amt
= opd
->size
* sizeof (*opd_sym_map
) / 8;
5005 opd_sym_map
= bfd_zalloc (ibfd
, amt
);
5006 if (opd_sym_map
== NULL
)
5008 ppc64_elf_section_data (opd
)->u
.opd
.func_sec
= opd_sym_map
;
5009 BFD_ASSERT (ppc64_elf_section_data (opd
)->sec_type
== sec_normal
);
5010 ppc64_elf_section_data (opd
)->sec_type
= sec_opd
;
5014 /* For input files without an explicit abiversion in e_flags
5015 we should have flagged any with symbol st_other bits set
5016 as ELFv1 and above flagged those with .opd as ELFv2.
5017 Set the output abiversion if not yet set, and for any input
5018 still ambiguous, take its abiversion from the output.
5019 Differences in ABI are reported later. */
5020 if (abiversion (info
->output_bfd
) == 0)
5021 set_abiversion (info
->output_bfd
, abiversion (ibfd
));
5022 else if (abiversion (ibfd
) == 0)
5023 set_abiversion (ibfd
, abiversion (info
->output_bfd
));
5025 p
= &htab
->dot_syms
;
5026 while ((eh
= *p
) != NULL
)
5029 if (&eh
->elf
== htab
->elf
.hgot
)
5031 else if (htab
->elf
.hgot
== NULL
5032 && strcmp (eh
->elf
.root
.root
.string
, ".TOC.") == 0)
5033 htab
->elf
.hgot
= &eh
->elf
;
5034 else if (!add_symbol_adjust (eh
, info
))
5036 p
= &eh
->u
.next_dot_sym
;
5040 /* Clear the list for non-ppc64 input files. */
5041 p
= &htab
->dot_syms
;
5042 while ((eh
= *p
) != NULL
)
5045 p
= &eh
->u
.next_dot_sym
;
5048 /* We need to fix the undefs list for any syms we have twiddled to
5050 if (htab
->twiddled_syms
)
5052 bfd_link_repair_undef_list (&htab
->elf
.root
);
5053 htab
->twiddled_syms
= 0;
5058 /* Undo hash table changes when an --as-needed input file is determined
5059 not to be needed. */
5062 ppc64_elf_notice_as_needed (bfd
*ibfd
,
5063 struct bfd_link_info
*info
,
5064 enum notice_asneeded_action act
)
5066 if (act
== notice_not_needed
)
5068 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5073 htab
->dot_syms
= NULL
;
5075 return _bfd_elf_notice_as_needed (ibfd
, info
, act
);
5078 /* If --just-symbols against a final linked binary, then assume we need
5079 toc adjusting stubs when calling functions defined there. */
5082 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
5084 if ((sec
->flags
& SEC_CODE
) != 0
5085 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
5086 && is_ppc64_elf (sec
->owner
))
5088 if (abiversion (sec
->owner
) >= 2
5089 || bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
5090 sec
->has_toc_reloc
= 1;
5092 _bfd_elf_link_just_syms (sec
, info
);
5095 static struct plt_entry
**
5096 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
5097 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
5099 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
5100 struct plt_entry
**local_plt
;
5101 unsigned char *local_got_tls_masks
;
5103 if (local_got_ents
== NULL
)
5105 bfd_size_type size
= symtab_hdr
->sh_info
;
5107 size
*= (sizeof (*local_got_ents
)
5108 + sizeof (*local_plt
)
5109 + sizeof (*local_got_tls_masks
));
5110 local_got_ents
= bfd_zalloc (abfd
, size
);
5111 if (local_got_ents
== NULL
)
5113 elf_local_got_ents (abfd
) = local_got_ents
;
5116 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
5118 struct got_entry
*ent
;
5120 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
5121 if (ent
->addend
== r_addend
5122 && ent
->owner
== abfd
5123 && ent
->tls_type
== tls_type
)
5127 bfd_size_type amt
= sizeof (*ent
);
5128 ent
= bfd_alloc (abfd
, amt
);
5131 ent
->next
= local_got_ents
[r_symndx
];
5132 ent
->addend
= r_addend
;
5134 ent
->tls_type
= tls_type
;
5135 ent
->is_indirect
= FALSE
;
5136 ent
->got
.refcount
= 0;
5137 local_got_ents
[r_symndx
] = ent
;
5139 ent
->got
.refcount
+= 1;
5142 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
5143 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
5144 local_got_tls_masks
[r_symndx
] |= tls_type
;
5146 return local_plt
+ r_symndx
;
5150 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
5152 struct plt_entry
*ent
;
5154 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
5155 if (ent
->addend
== addend
)
5159 bfd_size_type amt
= sizeof (*ent
);
5160 ent
= bfd_alloc (abfd
, amt
);
5164 ent
->addend
= addend
;
5165 ent
->plt
.refcount
= 0;
5168 ent
->plt
.refcount
+= 1;
5173 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
5175 return (r_type
== R_PPC64_REL24
5176 || r_type
== R_PPC64_REL14
5177 || r_type
== R_PPC64_REL14_BRTAKEN
5178 || r_type
== R_PPC64_REL14_BRNTAKEN
5179 || r_type
== R_PPC64_ADDR24
5180 || r_type
== R_PPC64_ADDR14
5181 || r_type
== R_PPC64_ADDR14_BRTAKEN
5182 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
5185 /* Look through the relocs for a section during the first phase, and
5186 calculate needed space in the global offset table, procedure
5187 linkage table, and dynamic reloc sections. */
5190 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
5191 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5193 struct ppc_link_hash_table
*htab
;
5194 Elf_Internal_Shdr
*symtab_hdr
;
5195 struct elf_link_hash_entry
**sym_hashes
;
5196 const Elf_Internal_Rela
*rel
;
5197 const Elf_Internal_Rela
*rel_end
;
5199 asection
**opd_sym_map
;
5200 struct elf_link_hash_entry
*tga
, *dottga
;
5202 if (info
->relocatable
)
5205 /* Don't do anything special with non-loaded, non-alloced sections.
5206 In particular, any relocs in such sections should not affect GOT
5207 and PLT reference counting (ie. we don't allow them to create GOT
5208 or PLT entries), there's no possibility or desire to optimize TLS
5209 relocs, and there's not much point in propagating relocs to shared
5210 libs that the dynamic linker won't relocate. */
5211 if ((sec
->flags
& SEC_ALLOC
) == 0)
5214 BFD_ASSERT (is_ppc64_elf (abfd
));
5216 htab
= ppc_hash_table (info
);
5220 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5221 FALSE
, FALSE
, TRUE
);
5222 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
5223 FALSE
, FALSE
, TRUE
);
5224 symtab_hdr
= &elf_symtab_hdr (abfd
);
5225 sym_hashes
= elf_sym_hashes (abfd
);
5228 if (ppc64_elf_section_data (sec
) != NULL
5229 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
5230 opd_sym_map
= ppc64_elf_section_data (sec
)->u
.opd
.func_sec
;
5232 rel_end
= relocs
+ sec
->reloc_count
;
5233 for (rel
= relocs
; rel
< rel_end
; rel
++)
5235 unsigned long r_symndx
;
5236 struct elf_link_hash_entry
*h
;
5237 enum elf_ppc64_reloc_type r_type
;
5239 struct _ppc64_elf_section_data
*ppc64_sec
;
5240 struct plt_entry
**ifunc
;
5242 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5243 if (r_symndx
< symtab_hdr
->sh_info
)
5247 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5248 h
= elf_follow_link (h
);
5250 /* PR15323, ref flags aren't set for references in the same
5252 h
->root
.non_ir_ref
= 1;
5254 if (h
== htab
->elf
.hgot
)
5255 sec
->has_toc_reloc
= 1;
5262 if (h
->type
== STT_GNU_IFUNC
)
5265 ifunc
= &h
->plt
.plist
;
5270 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5275 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
5277 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5278 rel
->r_addend
, PLT_IFUNC
);
5283 r_type
= ELF64_R_TYPE (rel
->r_info
);
5284 if (is_branch_reloc (r_type
))
5286 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
5289 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
5290 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
5291 /* We have a new-style __tls_get_addr call with a marker
5295 /* Mark this section as having an old-style call. */
5296 sec
->has_tls_get_addr_call
= 1;
5299 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5301 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
5309 /* These special tls relocs tie a call to __tls_get_addr with
5310 its parameter symbol. */
5313 case R_PPC64_GOT_TLSLD16
:
5314 case R_PPC64_GOT_TLSLD16_LO
:
5315 case R_PPC64_GOT_TLSLD16_HI
:
5316 case R_PPC64_GOT_TLSLD16_HA
:
5317 tls_type
= TLS_TLS
| TLS_LD
;
5320 case R_PPC64_GOT_TLSGD16
:
5321 case R_PPC64_GOT_TLSGD16_LO
:
5322 case R_PPC64_GOT_TLSGD16_HI
:
5323 case R_PPC64_GOT_TLSGD16_HA
:
5324 tls_type
= TLS_TLS
| TLS_GD
;
5327 case R_PPC64_GOT_TPREL16_DS
:
5328 case R_PPC64_GOT_TPREL16_LO_DS
:
5329 case R_PPC64_GOT_TPREL16_HI
:
5330 case R_PPC64_GOT_TPREL16_HA
:
5332 info
->flags
|= DF_STATIC_TLS
;
5333 tls_type
= TLS_TLS
| TLS_TPREL
;
5336 case R_PPC64_GOT_DTPREL16_DS
:
5337 case R_PPC64_GOT_DTPREL16_LO_DS
:
5338 case R_PPC64_GOT_DTPREL16_HI
:
5339 case R_PPC64_GOT_DTPREL16_HA
:
5340 tls_type
= TLS_TLS
| TLS_DTPREL
;
5342 sec
->has_tls_reloc
= 1;
5346 case R_PPC64_GOT16_DS
:
5347 case R_PPC64_GOT16_HA
:
5348 case R_PPC64_GOT16_HI
:
5349 case R_PPC64_GOT16_LO
:
5350 case R_PPC64_GOT16_LO_DS
:
5351 /* This symbol requires a global offset table entry. */
5352 sec
->has_toc_reloc
= 1;
5353 if (r_type
== R_PPC64_GOT_TLSLD16
5354 || r_type
== R_PPC64_GOT_TLSGD16
5355 || r_type
== R_PPC64_GOT_TPREL16_DS
5356 || r_type
== R_PPC64_GOT_DTPREL16_DS
5357 || r_type
== R_PPC64_GOT16
5358 || r_type
== R_PPC64_GOT16_DS
)
5360 htab
->do_multi_toc
= 1;
5361 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5364 if (ppc64_elf_tdata (abfd
)->got
== NULL
5365 && !create_got_section (abfd
, info
))
5370 struct ppc_link_hash_entry
*eh
;
5371 struct got_entry
*ent
;
5373 eh
= (struct ppc_link_hash_entry
*) h
;
5374 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5375 if (ent
->addend
== rel
->r_addend
5376 && ent
->owner
== abfd
5377 && ent
->tls_type
== tls_type
)
5381 bfd_size_type amt
= sizeof (*ent
);
5382 ent
= bfd_alloc (abfd
, amt
);
5385 ent
->next
= eh
->elf
.got
.glist
;
5386 ent
->addend
= rel
->r_addend
;
5388 ent
->tls_type
= tls_type
;
5389 ent
->is_indirect
= FALSE
;
5390 ent
->got
.refcount
= 0;
5391 eh
->elf
.got
.glist
= ent
;
5393 ent
->got
.refcount
+= 1;
5394 eh
->tls_mask
|= tls_type
;
5397 /* This is a global offset table entry for a local symbol. */
5398 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5399 rel
->r_addend
, tls_type
))
5402 /* We may also need a plt entry if the symbol turns out to be
5404 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1)
5406 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5411 case R_PPC64_PLT16_HA
:
5412 case R_PPC64_PLT16_HI
:
5413 case R_PPC64_PLT16_LO
:
5416 /* This symbol requires a procedure linkage table entry. We
5417 actually build the entry in adjust_dynamic_symbol,
5418 because this might be a case of linking PIC code without
5419 linking in any dynamic objects, in which case we don't
5420 need to generate a procedure linkage table after all. */
5423 /* It does not make sense to have a procedure linkage
5424 table entry for a local symbol. */
5425 bfd_set_error (bfd_error_bad_value
);
5430 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5433 if (h
->root
.root
.string
[0] == '.'
5434 && h
->root
.root
.string
[1] != '\0')
5435 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5439 /* The following relocations don't need to propagate the
5440 relocation if linking a shared object since they are
5441 section relative. */
5442 case R_PPC64_SECTOFF
:
5443 case R_PPC64_SECTOFF_LO
:
5444 case R_PPC64_SECTOFF_HI
:
5445 case R_PPC64_SECTOFF_HA
:
5446 case R_PPC64_SECTOFF_DS
:
5447 case R_PPC64_SECTOFF_LO_DS
:
5448 case R_PPC64_DTPREL16
:
5449 case R_PPC64_DTPREL16_LO
:
5450 case R_PPC64_DTPREL16_HI
:
5451 case R_PPC64_DTPREL16_HA
:
5452 case R_PPC64_DTPREL16_DS
:
5453 case R_PPC64_DTPREL16_LO_DS
:
5454 case R_PPC64_DTPREL16_HIGH
:
5455 case R_PPC64_DTPREL16_HIGHA
:
5456 case R_PPC64_DTPREL16_HIGHER
:
5457 case R_PPC64_DTPREL16_HIGHERA
:
5458 case R_PPC64_DTPREL16_HIGHEST
:
5459 case R_PPC64_DTPREL16_HIGHESTA
:
5464 case R_PPC64_REL16_LO
:
5465 case R_PPC64_REL16_HI
:
5466 case R_PPC64_REL16_HA
:
5469 /* Not supported as a dynamic relocation. */
5470 case R_PPC64_ADDR64_LOCAL
:
5473 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
5475 info
->callbacks
->einfo (_("%P: %H: %s reloc unsupported "
5476 "in shared libraries and PIEs.\n"),
5477 abfd
, sec
, rel
->r_offset
,
5478 ppc64_elf_howto_table
[r_type
]->name
);
5479 bfd_set_error (bfd_error_bad_value
);
5485 case R_PPC64_TOC16_DS
:
5486 htab
->do_multi_toc
= 1;
5487 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5488 case R_PPC64_TOC16_LO
:
5489 case R_PPC64_TOC16_HI
:
5490 case R_PPC64_TOC16_HA
:
5491 case R_PPC64_TOC16_LO_DS
:
5492 sec
->has_toc_reloc
= 1;
5495 /* This relocation describes the C++ object vtable hierarchy.
5496 Reconstruct it for later use during GC. */
5497 case R_PPC64_GNU_VTINHERIT
:
5498 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5502 /* This relocation describes which C++ vtable entries are actually
5503 used. Record for later use during GC. */
5504 case R_PPC64_GNU_VTENTRY
:
5505 BFD_ASSERT (h
!= NULL
);
5507 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5512 case R_PPC64_REL14_BRTAKEN
:
5513 case R_PPC64_REL14_BRNTAKEN
:
5515 asection
*dest
= NULL
;
5517 /* Heuristic: If jumping outside our section, chances are
5518 we are going to need a stub. */
5521 /* If the sym is weak it may be overridden later, so
5522 don't assume we know where a weak sym lives. */
5523 if (h
->root
.type
== bfd_link_hash_defined
)
5524 dest
= h
->root
.u
.def
.section
;
5528 Elf_Internal_Sym
*isym
;
5530 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5535 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5539 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5544 if (h
!= NULL
&& ifunc
== NULL
)
5546 /* We may need a .plt entry if the function this reloc
5547 refers to is in a shared lib. */
5548 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5551 if (h
->root
.root
.string
[0] == '.'
5552 && h
->root
.root
.string
[1] != '\0')
5553 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5554 if (h
== tga
|| h
== dottga
)
5555 sec
->has_tls_reloc
= 1;
5559 case R_PPC64_TPREL64
:
5560 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5562 info
->flags
|= DF_STATIC_TLS
;
5565 case R_PPC64_DTPMOD64
:
5566 if (rel
+ 1 < rel_end
5567 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5568 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5569 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5571 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5574 case R_PPC64_DTPREL64
:
5575 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5577 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5578 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5579 /* This is the second reloc of a dtpmod, dtprel pair.
5580 Don't mark with TLS_DTPREL. */
5584 sec
->has_tls_reloc
= 1;
5587 struct ppc_link_hash_entry
*eh
;
5588 eh
= (struct ppc_link_hash_entry
*) h
;
5589 eh
->tls_mask
|= tls_type
;
5592 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5593 rel
->r_addend
, tls_type
))
5596 ppc64_sec
= ppc64_elf_section_data (sec
);
5597 if (ppc64_sec
->sec_type
!= sec_toc
)
5601 /* One extra to simplify get_tls_mask. */
5602 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5603 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5604 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5606 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5607 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5608 if (ppc64_sec
->u
.toc
.add
== NULL
)
5610 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5611 ppc64_sec
->sec_type
= sec_toc
;
5613 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5614 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5615 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5617 /* Mark the second slot of a GD or LD entry.
5618 -1 to indicate GD and -2 to indicate LD. */
5619 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5620 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5621 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5622 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5625 case R_PPC64_TPREL16
:
5626 case R_PPC64_TPREL16_LO
:
5627 case R_PPC64_TPREL16_HI
:
5628 case R_PPC64_TPREL16_HA
:
5629 case R_PPC64_TPREL16_DS
:
5630 case R_PPC64_TPREL16_LO_DS
:
5631 case R_PPC64_TPREL16_HIGH
:
5632 case R_PPC64_TPREL16_HIGHA
:
5633 case R_PPC64_TPREL16_HIGHER
:
5634 case R_PPC64_TPREL16_HIGHERA
:
5635 case R_PPC64_TPREL16_HIGHEST
:
5636 case R_PPC64_TPREL16_HIGHESTA
:
5639 info
->flags
|= DF_STATIC_TLS
;
5644 case R_PPC64_ADDR64
:
5645 if (opd_sym_map
!= NULL
5646 && rel
+ 1 < rel_end
5647 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5651 if (h
->root
.root
.string
[0] == '.'
5652 && h
->root
.root
.string
[1] != 0
5653 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5656 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5661 Elf_Internal_Sym
*isym
;
5663 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5668 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5669 if (s
!= NULL
&& s
!= sec
)
5670 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5675 case R_PPC64_ADDR16
:
5676 case R_PPC64_ADDR16_DS
:
5677 case R_PPC64_ADDR16_HA
:
5678 case R_PPC64_ADDR16_HI
:
5679 case R_PPC64_ADDR16_HIGH
:
5680 case R_PPC64_ADDR16_HIGHA
:
5681 case R_PPC64_ADDR16_HIGHER
:
5682 case R_PPC64_ADDR16_HIGHERA
:
5683 case R_PPC64_ADDR16_HIGHEST
:
5684 case R_PPC64_ADDR16_HIGHESTA
:
5685 case R_PPC64_ADDR16_LO
:
5686 case R_PPC64_ADDR16_LO_DS
:
5687 if (h
!= NULL
&& !info
->shared
&& abiversion (abfd
) != 1
5688 && rel
->r_addend
== 0)
5690 /* We may need a .plt entry if this reloc refers to a
5691 function in a shared lib. */
5692 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5694 h
->pointer_equality_needed
= 1;
5701 case R_PPC64_ADDR14
:
5702 case R_PPC64_ADDR14_BRNTAKEN
:
5703 case R_PPC64_ADDR14_BRTAKEN
:
5704 case R_PPC64_ADDR24
:
5705 case R_PPC64_ADDR32
:
5706 case R_PPC64_UADDR16
:
5707 case R_PPC64_UADDR32
:
5708 case R_PPC64_UADDR64
:
5710 if (h
!= NULL
&& !info
->shared
)
5711 /* We may need a copy reloc. */
5714 /* Don't propagate .opd relocs. */
5715 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5718 /* If we are creating a shared library, and this is a reloc
5719 against a global symbol, or a non PC relative reloc
5720 against a local symbol, then we need to copy the reloc
5721 into the shared library. However, if we are linking with
5722 -Bsymbolic, we do not need to copy a reloc against a
5723 global symbol which is defined in an object we are
5724 including in the link (i.e., DEF_REGULAR is set). At
5725 this point we have not seen all the input files, so it is
5726 possible that DEF_REGULAR is not set now but will be set
5727 later (it is never cleared). In case of a weak definition,
5728 DEF_REGULAR may be cleared later by a strong definition in
5729 a shared library. We account for that possibility below by
5730 storing information in the dyn_relocs field of the hash
5731 table entry. A similar situation occurs when creating
5732 shared libraries and symbol visibility changes render the
5735 If on the other hand, we are creating an executable, we
5736 may need to keep relocations for symbols satisfied by a
5737 dynamic library if we manage to avoid copy relocs for the
5741 && (must_be_dyn_reloc (info
, r_type
)
5743 && (!SYMBOLIC_BIND (info
, h
)
5744 || h
->root
.type
== bfd_link_hash_defweak
5745 || !h
->def_regular
))))
5746 || (ELIMINATE_COPY_RELOCS
5749 && (h
->root
.type
== bfd_link_hash_defweak
5750 || !h
->def_regular
))
5754 /* We must copy these reloc types into the output file.
5755 Create a reloc section in dynobj and make room for
5759 sreloc
= _bfd_elf_make_dynamic_reloc_section
5760 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5766 /* If this is a global symbol, we count the number of
5767 relocations we need for this symbol. */
5770 struct elf_dyn_relocs
*p
;
5771 struct elf_dyn_relocs
**head
;
5773 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5775 if (p
== NULL
|| p
->sec
!= sec
)
5777 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5787 if (!must_be_dyn_reloc (info
, r_type
))
5792 /* Track dynamic relocs needed for local syms too.
5793 We really need local syms available to do this
5795 struct ppc_dyn_relocs
*p
;
5796 struct ppc_dyn_relocs
**head
;
5797 bfd_boolean is_ifunc
;
5800 Elf_Internal_Sym
*isym
;
5802 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5807 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5811 vpp
= &elf_section_data (s
)->local_dynrel
;
5812 head
= (struct ppc_dyn_relocs
**) vpp
;
5813 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
5815 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
5817 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
5819 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5825 p
->ifunc
= is_ifunc
;
5841 /* Merge backend specific data from an object file to the output
5842 object file when linking. */
5845 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5847 unsigned long iflags
, oflags
;
5849 if ((ibfd
->flags
& BFD_LINKER_CREATED
) != 0)
5852 if (!is_ppc64_elf (ibfd
) || !is_ppc64_elf (obfd
))
5855 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
5858 iflags
= elf_elfheader (ibfd
)->e_flags
;
5859 oflags
= elf_elfheader (obfd
)->e_flags
;
5861 if (iflags
& ~EF_PPC64_ABI
)
5863 (*_bfd_error_handler
)
5864 (_("%B uses unknown e_flags 0x%lx"), ibfd
, iflags
);
5865 bfd_set_error (bfd_error_bad_value
);
5868 else if (iflags
!= oflags
&& iflags
!= 0)
5870 (*_bfd_error_handler
)
5871 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5872 ibfd
, iflags
, oflags
);
5873 bfd_set_error (bfd_error_bad_value
);
5877 /* Merge Tag_compatibility attributes and any common GNU ones. */
5878 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
5884 ppc64_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
5886 /* Print normal ELF private data. */
5887 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5889 if (elf_elfheader (abfd
)->e_flags
!= 0)
5893 /* xgettext:c-format */
5894 fprintf (file
, _("private flags = 0x%lx:"),
5895 elf_elfheader (abfd
)->e_flags
);
5897 if ((elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
) != 0)
5898 fprintf (file
, _(" [abiv%ld]"),
5899 elf_elfheader (abfd
)->e_flags
& EF_PPC64_ABI
);
5906 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5907 of the code entry point, and its section. */
5910 opd_entry_value (asection
*opd_sec
,
5912 asection
**code_sec
,
5914 bfd_boolean in_code_sec
)
5916 bfd
*opd_bfd
= opd_sec
->owner
;
5917 Elf_Internal_Rela
*relocs
;
5918 Elf_Internal_Rela
*lo
, *hi
, *look
;
5921 /* No relocs implies we are linking a --just-symbols object, or looking
5922 at a final linked executable with addr2line or somesuch. */
5923 if (opd_sec
->reloc_count
== 0)
5925 bfd_byte
*contents
= ppc64_elf_tdata (opd_bfd
)->opd
.contents
;
5927 if (contents
== NULL
)
5929 if (!bfd_malloc_and_get_section (opd_bfd
, opd_sec
, &contents
))
5930 return (bfd_vma
) -1;
5931 ppc64_elf_tdata (opd_bfd
)->opd
.contents
= contents
;
5934 val
= bfd_get_64 (opd_bfd
, contents
+ offset
);
5935 if (code_sec
!= NULL
)
5937 asection
*sec
, *likely
= NULL
;
5943 && val
< sec
->vma
+ sec
->size
)
5949 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5951 && (sec
->flags
& SEC_LOAD
) != 0
5952 && (sec
->flags
& SEC_ALLOC
) != 0)
5957 if (code_off
!= NULL
)
5958 *code_off
= val
- likely
->vma
;
5964 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5966 relocs
= ppc64_elf_tdata (opd_bfd
)->opd
.relocs
;
5968 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5970 /* Go find the opd reloc at the sym address. */
5972 BFD_ASSERT (lo
!= NULL
);
5973 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5977 look
= lo
+ (hi
- lo
) / 2;
5978 if (look
->r_offset
< offset
)
5980 else if (look
->r_offset
> offset
)
5984 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5986 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5987 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5989 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5992 if (symndx
< symtab_hdr
->sh_info
5993 || elf_sym_hashes (opd_bfd
) == NULL
)
5995 Elf_Internal_Sym
*sym
;
5997 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6000 size_t symcnt
= symtab_hdr
->sh_info
;
6001 if (elf_sym_hashes (opd_bfd
) == NULL
)
6002 symcnt
= symtab_hdr
->sh_size
/ symtab_hdr
->sh_entsize
;
6003 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, symcnt
,
6004 0, NULL
, NULL
, NULL
);
6007 symtab_hdr
->contents
= (bfd_byte
*) sym
;
6011 val
= sym
->st_value
;
6012 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6013 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
6017 struct elf_link_hash_entry
**sym_hashes
;
6018 struct elf_link_hash_entry
*rh
;
6020 sym_hashes
= elf_sym_hashes (opd_bfd
);
6021 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
6024 rh
= elf_follow_link (rh
);
6025 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
6026 || rh
->root
.type
== bfd_link_hash_defweak
);
6027 val
= rh
->root
.u
.def
.value
;
6028 sec
= rh
->root
.u
.def
.section
;
6032 /* Handle the odd case where we can be called
6033 during bfd_elf_link_add_symbols before the
6034 symbol hashes have been fully populated. */
6035 Elf_Internal_Sym
*sym
;
6037 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
, 1,
6038 symndx
, NULL
, NULL
, NULL
);
6042 val
= sym
->st_value
;
6043 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
6047 val
+= look
->r_addend
;
6048 if (code_off
!= NULL
)
6050 if (code_sec
!= NULL
)
6052 if (in_code_sec
&& *code_sec
!= sec
)
6057 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
6058 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
6067 /* If the ELF symbol SYM might be a function in SEC, return the
6068 function size and set *CODE_OFF to the function's entry point,
6069 otherwise return zero. */
6071 static bfd_size_type
6072 ppc64_elf_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
6077 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
6078 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0)
6082 if (!(sym
->flags
& BSF_SYNTHETIC
))
6083 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
6085 if (strcmp (sym
->section
->name
, ".opd") == 0)
6087 if (opd_entry_value (sym
->section
, sym
->value
,
6088 &sec
, code_off
, TRUE
) == (bfd_vma
) -1)
6090 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6091 symbol. This size has nothing to do with the code size of the
6092 function, which is what we're supposed to return, but the
6093 code size isn't available without looking up the dot-sym.
6094 However, doing that would be a waste of time particularly
6095 since elf_find_function will look at the dot-sym anyway.
6096 Now, elf_find_function will keep the largest size of any
6097 function sym found at the code address of interest, so return
6098 1 here to avoid it incorrectly caching a larger function size
6099 for a small function. This does mean we return the wrong
6100 size for a new-ABI function of size 24, but all that does is
6101 disable caching for such functions. */
6107 if (sym
->section
!= sec
)
6109 *code_off
= sym
->value
;
6116 /* Return true if symbol is defined in a regular object file. */
6119 is_static_defined (struct elf_link_hash_entry
*h
)
6121 return ((h
->root
.type
== bfd_link_hash_defined
6122 || h
->root
.type
== bfd_link_hash_defweak
)
6123 && h
->root
.u
.def
.section
!= NULL
6124 && h
->root
.u
.def
.section
->output_section
!= NULL
);
6127 /* If FDH is a function descriptor symbol, return the associated code
6128 entry symbol if it is defined. Return NULL otherwise. */
6130 static struct ppc_link_hash_entry
*
6131 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
6133 if (fdh
->is_func_descriptor
)
6135 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
6136 if (fh
->elf
.root
.type
== bfd_link_hash_defined
6137 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6143 /* If FH is a function code entry symbol, return the associated
6144 function descriptor symbol if it is defined. Return NULL otherwise. */
6146 static struct ppc_link_hash_entry
*
6147 defined_func_desc (struct ppc_link_hash_entry
*fh
)
6150 && fh
->oh
->is_func_descriptor
)
6152 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
6153 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
6154 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
6160 /* Mark all our entry sym sections, both opd and code section. */
6163 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
6165 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6166 struct bfd_sym_chain
*sym
;
6171 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
6173 struct ppc_link_hash_entry
*eh
, *fh
;
6176 eh
= (struct ppc_link_hash_entry
*)
6177 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
6180 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
6181 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6184 fh
= defined_code_entry (eh
);
6187 sec
= fh
->elf
.root
.u
.def
.section
;
6188 sec
->flags
|= SEC_KEEP
;
6190 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6191 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6192 eh
->elf
.root
.u
.def
.value
,
6193 &sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6194 sec
->flags
|= SEC_KEEP
;
6196 sec
= eh
->elf
.root
.u
.def
.section
;
6197 sec
->flags
|= SEC_KEEP
;
6201 /* Mark sections containing dynamically referenced symbols. When
6202 building shared libraries, we must assume that any visible symbol is
6206 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
6208 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
6209 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
6210 struct ppc_link_hash_entry
*fdh
;
6211 struct bfd_elf_dynamic_list
*d
= info
->dynamic_list
;
6213 /* Dynamic linking info is on the func descriptor sym. */
6214 fdh
= defined_func_desc (eh
);
6218 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
6219 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
6220 && (eh
->elf
.ref_dynamic
6221 || (eh
->elf
.def_regular
6222 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
6223 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
6224 && (!info
->executable
6225 || info
->export_dynamic
6228 && (*d
->match
) (&d
->head
, NULL
, eh
->elf
.root
.root
.string
)))
6229 && (strchr (eh
->elf
.root
.root
.string
, ELF_VER_CHR
) != NULL
6230 || !bfd_hide_sym_by_version (info
->version_info
,
6231 eh
->elf
.root
.root
.string
)))))
6234 struct ppc_link_hash_entry
*fh
;
6236 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
6238 /* Function descriptor syms cause the associated
6239 function code sym section to be marked. */
6240 fh
= defined_code_entry (eh
);
6243 code_sec
= fh
->elf
.root
.u
.def
.section
;
6244 code_sec
->flags
|= SEC_KEEP
;
6246 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6247 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6248 eh
->elf
.root
.u
.def
.value
,
6249 &code_sec
, NULL
, FALSE
) != (bfd_vma
) -1)
6250 code_sec
->flags
|= SEC_KEEP
;
6256 /* Return the section that should be marked against GC for a given
6260 ppc64_elf_gc_mark_hook (asection
*sec
,
6261 struct bfd_link_info
*info
,
6262 Elf_Internal_Rela
*rel
,
6263 struct elf_link_hash_entry
*h
,
6264 Elf_Internal_Sym
*sym
)
6268 /* Syms return NULL if we're marking .opd, so we avoid marking all
6269 function sections, as all functions are referenced in .opd. */
6271 if (get_opd_info (sec
) != NULL
)
6276 enum elf_ppc64_reloc_type r_type
;
6277 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
6279 r_type
= ELF64_R_TYPE (rel
->r_info
);
6282 case R_PPC64_GNU_VTINHERIT
:
6283 case R_PPC64_GNU_VTENTRY
:
6287 switch (h
->root
.type
)
6289 case bfd_link_hash_defined
:
6290 case bfd_link_hash_defweak
:
6291 eh
= (struct ppc_link_hash_entry
*) h
;
6292 fdh
= defined_func_desc (eh
);
6296 /* Function descriptor syms cause the associated
6297 function code sym section to be marked. */
6298 fh
= defined_code_entry (eh
);
6301 /* They also mark their opd section. */
6302 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6304 rsec
= fh
->elf
.root
.u
.def
.section
;
6306 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
6307 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
6308 eh
->elf
.root
.u
.def
.value
,
6309 &rsec
, NULL
, FALSE
) != (bfd_vma
) -1)
6310 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
6312 rsec
= h
->root
.u
.def
.section
;
6315 case bfd_link_hash_common
:
6316 rsec
= h
->root
.u
.c
.p
->section
;
6320 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6326 struct _opd_sec_data
*opd
;
6328 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
6329 opd
= get_opd_info (rsec
);
6330 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
6334 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
6341 /* Update the .got, .plt. and dynamic reloc reference counts for the
6342 section being removed. */
6345 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
6346 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6348 struct ppc_link_hash_table
*htab
;
6349 Elf_Internal_Shdr
*symtab_hdr
;
6350 struct elf_link_hash_entry
**sym_hashes
;
6351 struct got_entry
**local_got_ents
;
6352 const Elf_Internal_Rela
*rel
, *relend
;
6354 if (info
->relocatable
)
6357 if ((sec
->flags
& SEC_ALLOC
) == 0)
6360 elf_section_data (sec
)->local_dynrel
= NULL
;
6362 htab
= ppc_hash_table (info
);
6366 symtab_hdr
= &elf_symtab_hdr (abfd
);
6367 sym_hashes
= elf_sym_hashes (abfd
);
6368 local_got_ents
= elf_local_got_ents (abfd
);
6370 relend
= relocs
+ sec
->reloc_count
;
6371 for (rel
= relocs
; rel
< relend
; rel
++)
6373 unsigned long r_symndx
;
6374 enum elf_ppc64_reloc_type r_type
;
6375 struct elf_link_hash_entry
*h
= NULL
;
6376 unsigned char tls_type
= 0;
6378 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6379 r_type
= ELF64_R_TYPE (rel
->r_info
);
6380 if (r_symndx
>= symtab_hdr
->sh_info
)
6382 struct ppc_link_hash_entry
*eh
;
6383 struct elf_dyn_relocs
**pp
;
6384 struct elf_dyn_relocs
*p
;
6386 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6387 h
= elf_follow_link (h
);
6388 eh
= (struct ppc_link_hash_entry
*) h
;
6390 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6393 /* Everything must go for SEC. */
6399 if (is_branch_reloc (r_type
))
6401 struct plt_entry
**ifunc
= NULL
;
6404 if (h
->type
== STT_GNU_IFUNC
)
6405 ifunc
= &h
->plt
.plist
;
6407 else if (local_got_ents
!= NULL
)
6409 struct plt_entry
**local_plt
= (struct plt_entry
**)
6410 (local_got_ents
+ symtab_hdr
->sh_info
);
6411 unsigned char *local_got_tls_masks
= (unsigned char *)
6412 (local_plt
+ symtab_hdr
->sh_info
);
6413 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
6414 ifunc
= local_plt
+ r_symndx
;
6418 struct plt_entry
*ent
;
6420 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
6421 if (ent
->addend
== rel
->r_addend
)
6425 if (ent
->plt
.refcount
> 0)
6426 ent
->plt
.refcount
-= 1;
6433 case R_PPC64_GOT_TLSLD16
:
6434 case R_PPC64_GOT_TLSLD16_LO
:
6435 case R_PPC64_GOT_TLSLD16_HI
:
6436 case R_PPC64_GOT_TLSLD16_HA
:
6437 tls_type
= TLS_TLS
| TLS_LD
;
6440 case R_PPC64_GOT_TLSGD16
:
6441 case R_PPC64_GOT_TLSGD16_LO
:
6442 case R_PPC64_GOT_TLSGD16_HI
:
6443 case R_PPC64_GOT_TLSGD16_HA
:
6444 tls_type
= TLS_TLS
| TLS_GD
;
6447 case R_PPC64_GOT_TPREL16_DS
:
6448 case R_PPC64_GOT_TPREL16_LO_DS
:
6449 case R_PPC64_GOT_TPREL16_HI
:
6450 case R_PPC64_GOT_TPREL16_HA
:
6451 tls_type
= TLS_TLS
| TLS_TPREL
;
6454 case R_PPC64_GOT_DTPREL16_DS
:
6455 case R_PPC64_GOT_DTPREL16_LO_DS
:
6456 case R_PPC64_GOT_DTPREL16_HI
:
6457 case R_PPC64_GOT_DTPREL16_HA
:
6458 tls_type
= TLS_TLS
| TLS_DTPREL
;
6462 case R_PPC64_GOT16_DS
:
6463 case R_PPC64_GOT16_HA
:
6464 case R_PPC64_GOT16_HI
:
6465 case R_PPC64_GOT16_LO
:
6466 case R_PPC64_GOT16_LO_DS
:
6469 struct got_entry
*ent
;
6474 ent
= local_got_ents
[r_symndx
];
6476 for (; ent
!= NULL
; ent
= ent
->next
)
6477 if (ent
->addend
== rel
->r_addend
6478 && ent
->owner
== abfd
6479 && ent
->tls_type
== tls_type
)
6483 if (ent
->got
.refcount
> 0)
6484 ent
->got
.refcount
-= 1;
6488 case R_PPC64_PLT16_HA
:
6489 case R_PPC64_PLT16_HI
:
6490 case R_PPC64_PLT16_LO
:
6494 case R_PPC64_REL14_BRNTAKEN
:
6495 case R_PPC64_REL14_BRTAKEN
:
6499 struct plt_entry
*ent
;
6501 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6502 if (ent
->addend
== rel
->r_addend
)
6504 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
6505 ent
->plt
.refcount
-= 1;
6516 /* The maximum size of .sfpr. */
6517 #define SFPR_MAX (218*4)
6519 struct sfpr_def_parms
6521 const char name
[12];
6522 unsigned char lo
, hi
;
6523 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
6524 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
6527 /* Auto-generate _save*, _rest* functions in .sfpr. */
6530 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
6532 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6534 size_t len
= strlen (parm
->name
);
6535 bfd_boolean writing
= FALSE
;
6541 memcpy (sym
, parm
->name
, len
);
6544 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
6546 struct elf_link_hash_entry
*h
;
6548 sym
[len
+ 0] = i
/ 10 + '0';
6549 sym
[len
+ 1] = i
% 10 + '0';
6550 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
6554 h
->root
.type
= bfd_link_hash_defined
;
6555 h
->root
.u
.def
.section
= htab
->sfpr
;
6556 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6559 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6561 if (htab
->sfpr
->contents
== NULL
)
6563 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6564 if (htab
->sfpr
->contents
== NULL
)
6570 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6572 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6574 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6575 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6583 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6585 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6590 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6592 p
= savegpr0 (abfd
, p
, r
);
6593 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6595 bfd_put_32 (abfd
, BLR
, p
);
6600 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6602 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6607 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6609 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6611 p
= restgpr0 (abfd
, p
, r
);
6612 bfd_put_32 (abfd
, MTLR_R0
, p
);
6616 p
= restgpr0 (abfd
, p
, 30);
6617 p
= restgpr0 (abfd
, p
, 31);
6619 bfd_put_32 (abfd
, BLR
, p
);
6624 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6626 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6631 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6633 p
= savegpr1 (abfd
, p
, r
);
6634 bfd_put_32 (abfd
, BLR
, p
);
6639 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6641 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6646 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6648 p
= restgpr1 (abfd
, p
, r
);
6649 bfd_put_32 (abfd
, BLR
, p
);
6654 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6656 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6661 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6663 p
= savefpr (abfd
, p
, r
);
6664 bfd_put_32 (abfd
, STD_R0_0R1
+ STK_LR
, p
);
6666 bfd_put_32 (abfd
, BLR
, p
);
6671 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6673 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6678 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6680 bfd_put_32 (abfd
, LD_R0_0R1
+ STK_LR
, p
);
6682 p
= restfpr (abfd
, p
, r
);
6683 bfd_put_32 (abfd
, MTLR_R0
, p
);
6687 p
= restfpr (abfd
, p
, 30);
6688 p
= restfpr (abfd
, p
, 31);
6690 bfd_put_32 (abfd
, BLR
, p
);
6695 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6697 p
= savefpr (abfd
, p
, r
);
6698 bfd_put_32 (abfd
, BLR
, p
);
6703 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6705 p
= restfpr (abfd
, p
, r
);
6706 bfd_put_32 (abfd
, BLR
, p
);
6711 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6713 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6715 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6720 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6722 p
= savevr (abfd
, p
, r
);
6723 bfd_put_32 (abfd
, BLR
, p
);
6728 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6730 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6732 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6737 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6739 p
= restvr (abfd
, p
, r
);
6740 bfd_put_32 (abfd
, BLR
, p
);
6744 /* Called via elf_link_hash_traverse to transfer dynamic linking
6745 information on function code symbol entries to their corresponding
6746 function descriptor symbol entries. */
6749 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6751 struct bfd_link_info
*info
;
6752 struct ppc_link_hash_table
*htab
;
6753 struct plt_entry
*ent
;
6754 struct ppc_link_hash_entry
*fh
;
6755 struct ppc_link_hash_entry
*fdh
;
6756 bfd_boolean force_local
;
6758 fh
= (struct ppc_link_hash_entry
*) h
;
6759 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6763 htab
= ppc_hash_table (info
);
6767 /* Resolve undefined references to dot-symbols as the value
6768 in the function descriptor, if we have one in a regular object.
6769 This is to satisfy cases like ".quad .foo". Calls to functions
6770 in dynamic objects are handled elsewhere. */
6771 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6772 && fh
->was_undefined
6773 && (fdh
= defined_func_desc (fh
)) != NULL
6774 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6775 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6776 fdh
->elf
.root
.u
.def
.value
,
6777 &fh
->elf
.root
.u
.def
.section
,
6778 &fh
->elf
.root
.u
.def
.value
, FALSE
) != (bfd_vma
) -1)
6780 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6781 fh
->elf
.forced_local
= 1;
6782 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6783 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6786 /* If this is a function code symbol, transfer dynamic linking
6787 information to the function descriptor symbol. */
6791 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6792 if (ent
->plt
.refcount
> 0)
6795 || fh
->elf
.root
.root
.string
[0] != '.'
6796 || fh
->elf
.root
.root
.string
[1] == '\0')
6799 /* Find the corresponding function descriptor symbol. Create it
6800 as undefined if necessary. */
6802 fdh
= lookup_fdh (fh
, htab
);
6804 && !info
->executable
6805 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6806 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6808 fdh
= make_fdh (info
, fh
);
6813 /* Fake function descriptors are made undefweak. If the function
6814 code symbol is strong undefined, make the fake sym the same.
6815 If the function code symbol is defined, then force the fake
6816 descriptor local; We can't support overriding of symbols in a
6817 shared library on a fake descriptor. */
6821 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6823 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6825 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6826 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6828 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6829 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6831 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6836 && !fdh
->elf
.forced_local
6837 && (!info
->executable
6838 || fdh
->elf
.def_dynamic
6839 || fdh
->elf
.ref_dynamic
6840 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6841 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6843 if (fdh
->elf
.dynindx
== -1)
6844 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6846 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6847 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6848 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6849 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6850 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6852 move_plt_plist (fh
, fdh
);
6853 fdh
->elf
.needs_plt
= 1;
6855 fdh
->is_func_descriptor
= 1;
6860 /* Now that the info is on the function descriptor, clear the
6861 function code sym info. Any function code syms for which we
6862 don't have a definition in a regular file, we force local.
6863 This prevents a shared library from exporting syms that have
6864 been imported from another library. Function code syms that
6865 are really in the library we must leave global to prevent the
6866 linker dragging in a definition from a static library. */
6867 force_local
= (!fh
->elf
.def_regular
6869 || !fdh
->elf
.def_regular
6870 || fdh
->elf
.forced_local
);
6871 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6876 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6877 this hook to a) provide some gcc support functions, and b) transfer
6878 dynamic linking information gathered so far on function code symbol
6879 entries, to their corresponding function descriptor symbol entries. */
6882 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6883 struct bfd_link_info
*info
)
6885 struct ppc_link_hash_table
*htab
;
6887 static const struct sfpr_def_parms funcs
[] =
6889 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6890 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6891 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6892 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6893 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6894 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6895 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6896 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6897 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6898 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6899 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6900 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6903 htab
= ppc_hash_table (info
);
6907 if (!info
->relocatable
6908 && htab
->elf
.hgot
!= NULL
)
6910 _bfd_elf_link_hash_hide_symbol (info
, htab
->elf
.hgot
, TRUE
);
6911 /* Make .TOC. defined so as to prevent it being made dynamic.
6912 The wrong value here is fixed later in ppc64_elf_set_toc. */
6913 htab
->elf
.hgot
->type
= STT_OBJECT
;
6914 htab
->elf
.hgot
->root
.type
= bfd_link_hash_defined
;
6915 htab
->elf
.hgot
->root
.u
.def
.value
= 0;
6916 htab
->elf
.hgot
->root
.u
.def
.section
= bfd_abs_section_ptr
;
6917 htab
->elf
.hgot
->def_regular
= 1;
6918 htab
->elf
.hgot
->other
= ((htab
->elf
.hgot
->other
& ~ELF_ST_VISIBILITY (-1))
6922 if (htab
->sfpr
== NULL
)
6923 /* We don't have any relocs. */
6926 /* Provide any missing _save* and _rest* functions. */
6927 htab
->sfpr
->size
= 0;
6928 if (htab
->params
->save_restore_funcs
)
6929 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6930 if (!sfpr_define (info
, &funcs
[i
]))
6933 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6935 if (htab
->sfpr
->size
== 0)
6936 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6941 /* Return true if we have dynamic relocs that apply to read-only sections. */
6944 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
6946 struct ppc_link_hash_entry
*eh
;
6947 struct elf_dyn_relocs
*p
;
6949 eh
= (struct ppc_link_hash_entry
*) h
;
6950 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6952 asection
*s
= p
->sec
->output_section
;
6954 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6960 /* Adjust a symbol defined by a dynamic object and referenced by a
6961 regular object. The current definition is in some section of the
6962 dynamic object, but we're not including those sections. We have to
6963 change the definition to something the rest of the link can
6967 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6968 struct elf_link_hash_entry
*h
)
6970 struct ppc_link_hash_table
*htab
;
6973 htab
= ppc_hash_table (info
);
6977 /* Deal with function syms. */
6978 if (h
->type
== STT_FUNC
6979 || h
->type
== STT_GNU_IFUNC
6982 /* Clear procedure linkage table information for any symbol that
6983 won't need a .plt entry. */
6984 struct plt_entry
*ent
;
6985 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6986 if (ent
->plt
.refcount
> 0)
6989 || (h
->type
!= STT_GNU_IFUNC
6990 && (SYMBOL_CALLS_LOCAL (info
, h
)
6991 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6992 && h
->root
.type
== bfd_link_hash_undefweak
))))
6994 h
->plt
.plist
= NULL
;
6996 h
->pointer_equality_needed
= 0;
6998 else if (abiversion (info
->output_bfd
) == 2)
7000 /* Taking a function's address in a read/write section
7001 doesn't require us to define the function symbol in the
7002 executable on a global entry stub. A dynamic reloc can
7004 if (h
->pointer_equality_needed
7005 && !readonly_dynrelocs (h
))
7007 h
->pointer_equality_needed
= 0;
7011 /* After adjust_dynamic_symbol, non_got_ref set in the
7012 non-shared case means that we have allocated space in
7013 .dynbss for the symbol and thus dyn_relocs for this
7014 symbol should be discarded.
7015 If we get here we know we are making a PLT entry for this
7016 symbol, and in an executable we'd normally resolve
7017 relocations against this symbol to the PLT entry. Allow
7018 dynamic relocs if the reference is weak, and the dynamic
7019 relocs will not cause text relocation. */
7020 else if (!h
->ref_regular_nonweak
7022 && h
->type
!= STT_GNU_IFUNC
7023 && !readonly_dynrelocs (h
))
7026 /* If making a plt entry, then we don't need copy relocs. */
7031 h
->plt
.plist
= NULL
;
7033 /* If this is a weak symbol, and there is a real definition, the
7034 processor independent code will have arranged for us to see the
7035 real definition first, and we can just use the same value. */
7036 if (h
->u
.weakdef
!= NULL
)
7038 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
7039 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
7040 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
7041 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
7042 if (ELIMINATE_COPY_RELOCS
)
7043 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
7047 /* If we are creating a shared library, we must presume that the
7048 only references to the symbol are via the global offset table.
7049 For such cases we need not do anything here; the relocations will
7050 be handled correctly by relocate_section. */
7054 /* If there are no references to this symbol that do not use the
7055 GOT, we don't need to generate a copy reloc. */
7056 if (!h
->non_got_ref
)
7059 /* Don't generate a copy reloc for symbols defined in the executable. */
7060 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
7063 /* If we didn't find any dynamic relocs in read-only sections, then
7064 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7065 if (ELIMINATE_COPY_RELOCS
&& !readonly_dynrelocs (h
))
7071 if (h
->plt
.plist
!= NULL
)
7073 /* We should never get here, but unfortunately there are versions
7074 of gcc out there that improperly (for this ABI) put initialized
7075 function pointers, vtable refs and suchlike in read-only
7076 sections. Allow them to proceed, but warn that this might
7077 break at runtime. */
7078 info
->callbacks
->einfo
7079 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7080 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7081 h
->root
.root
.string
);
7084 /* This is a reference to a symbol defined by a dynamic object which
7085 is not a function. */
7087 /* We must allocate the symbol in our .dynbss section, which will
7088 become part of the .bss section of the executable. There will be
7089 an entry for this symbol in the .dynsym section. The dynamic
7090 object will contain position independent code, so all references
7091 from the dynamic object to this symbol will go through the global
7092 offset table. The dynamic linker will use the .dynsym entry to
7093 determine the address it must put in the global offset table, so
7094 both the dynamic object and the regular object will refer to the
7095 same memory location for the variable. */
7097 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7098 to copy the initial value out of the dynamic object and into the
7099 runtime process image. We need to remember the offset into the
7100 .rela.bss section we are going to use. */
7101 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7103 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
7109 return _bfd_elf_adjust_dynamic_copy (h
, s
);
7112 /* If given a function descriptor symbol, hide both the function code
7113 sym and the descriptor. */
7115 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
7116 struct elf_link_hash_entry
*h
,
7117 bfd_boolean force_local
)
7119 struct ppc_link_hash_entry
*eh
;
7120 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
7122 eh
= (struct ppc_link_hash_entry
*) h
;
7123 if (eh
->is_func_descriptor
)
7125 struct ppc_link_hash_entry
*fh
= eh
->oh
;
7130 struct ppc_link_hash_table
*htab
;
7133 /* We aren't supposed to use alloca in BFD because on
7134 systems which do not have alloca the version in libiberty
7135 calls xmalloc, which might cause the program to crash
7136 when it runs out of memory. This function doesn't have a
7137 return status, so there's no way to gracefully return an
7138 error. So cheat. We know that string[-1] can be safely
7139 accessed; It's either a string in an ELF string table,
7140 or allocated in an objalloc structure. */
7142 p
= eh
->elf
.root
.root
.string
- 1;
7145 htab
= ppc_hash_table (info
);
7149 fh
= (struct ppc_link_hash_entry
*)
7150 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7153 /* Unfortunately, if it so happens that the string we were
7154 looking for was allocated immediately before this string,
7155 then we overwrote the string terminator. That's the only
7156 reason the lookup should fail. */
7159 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
7160 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
7162 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
7163 fh
= (struct ppc_link_hash_entry
*)
7164 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
7173 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
7178 get_sym_h (struct elf_link_hash_entry
**hp
,
7179 Elf_Internal_Sym
**symp
,
7181 unsigned char **tls_maskp
,
7182 Elf_Internal_Sym
**locsymsp
,
7183 unsigned long r_symndx
,
7186 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7188 if (r_symndx
>= symtab_hdr
->sh_info
)
7190 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7191 struct elf_link_hash_entry
*h
;
7193 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7194 h
= elf_follow_link (h
);
7202 if (symsecp
!= NULL
)
7204 asection
*symsec
= NULL
;
7205 if (h
->root
.type
== bfd_link_hash_defined
7206 || h
->root
.type
== bfd_link_hash_defweak
)
7207 symsec
= h
->root
.u
.def
.section
;
7211 if (tls_maskp
!= NULL
)
7213 struct ppc_link_hash_entry
*eh
;
7215 eh
= (struct ppc_link_hash_entry
*) h
;
7216 *tls_maskp
= &eh
->tls_mask
;
7221 Elf_Internal_Sym
*sym
;
7222 Elf_Internal_Sym
*locsyms
= *locsymsp
;
7224 if (locsyms
== NULL
)
7226 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7227 if (locsyms
== NULL
)
7228 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
7229 symtab_hdr
->sh_info
,
7230 0, NULL
, NULL
, NULL
);
7231 if (locsyms
== NULL
)
7233 *locsymsp
= locsyms
;
7235 sym
= locsyms
+ r_symndx
;
7243 if (symsecp
!= NULL
)
7244 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
7246 if (tls_maskp
!= NULL
)
7248 struct got_entry
**lgot_ents
;
7249 unsigned char *tls_mask
;
7252 lgot_ents
= elf_local_got_ents (ibfd
);
7253 if (lgot_ents
!= NULL
)
7255 struct plt_entry
**local_plt
= (struct plt_entry
**)
7256 (lgot_ents
+ symtab_hdr
->sh_info
);
7257 unsigned char *lgot_masks
= (unsigned char *)
7258 (local_plt
+ symtab_hdr
->sh_info
);
7259 tls_mask
= &lgot_masks
[r_symndx
];
7261 *tls_maskp
= tls_mask
;
7267 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7268 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7269 type suitable for optimization, and 1 otherwise. */
7272 get_tls_mask (unsigned char **tls_maskp
,
7273 unsigned long *toc_symndx
,
7274 bfd_vma
*toc_addend
,
7275 Elf_Internal_Sym
**locsymsp
,
7276 const Elf_Internal_Rela
*rel
,
7279 unsigned long r_symndx
;
7281 struct elf_link_hash_entry
*h
;
7282 Elf_Internal_Sym
*sym
;
7286 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7287 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7290 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
7292 || ppc64_elf_section_data (sec
) == NULL
7293 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
7296 /* Look inside a TOC section too. */
7299 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
7300 off
= h
->root
.u
.def
.value
;
7303 off
= sym
->st_value
;
7304 off
+= rel
->r_addend
;
7305 BFD_ASSERT (off
% 8 == 0);
7306 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
7307 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
7308 if (toc_symndx
!= NULL
)
7309 *toc_symndx
= r_symndx
;
7310 if (toc_addend
!= NULL
)
7311 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
7312 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
7314 if ((h
== NULL
|| is_static_defined (h
))
7315 && (next_r
== -1 || next_r
== -2))
7320 /* Find (or create) an entry in the tocsave hash table. */
7322 static struct tocsave_entry
*
7323 tocsave_find (struct ppc_link_hash_table
*htab
,
7324 enum insert_option insert
,
7325 Elf_Internal_Sym
**local_syms
,
7326 const Elf_Internal_Rela
*irela
,
7329 unsigned long r_indx
;
7330 struct elf_link_hash_entry
*h
;
7331 Elf_Internal_Sym
*sym
;
7332 struct tocsave_entry ent
, *p
;
7334 struct tocsave_entry
**slot
;
7336 r_indx
= ELF64_R_SYM (irela
->r_info
);
7337 if (!get_sym_h (&h
, &sym
, &ent
.sec
, NULL
, local_syms
, r_indx
, ibfd
))
7339 if (ent
.sec
== NULL
|| ent
.sec
->output_section
== NULL
)
7341 (*_bfd_error_handler
)
7342 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7347 ent
.offset
= h
->root
.u
.def
.value
;
7349 ent
.offset
= sym
->st_value
;
7350 ent
.offset
+= irela
->r_addend
;
7352 hash
= tocsave_htab_hash (&ent
);
7353 slot
= ((struct tocsave_entry
**)
7354 htab_find_slot_with_hash (htab
->tocsave_htab
, &ent
, hash
, insert
));
7360 p
= (struct tocsave_entry
*) bfd_alloc (ibfd
, sizeof (*p
));
7369 /* Adjust all global syms defined in opd sections. In gcc generated
7370 code for the old ABI, these will already have been done. */
7373 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
7375 struct ppc_link_hash_entry
*eh
;
7377 struct _opd_sec_data
*opd
;
7379 if (h
->root
.type
== bfd_link_hash_indirect
)
7382 if (h
->root
.type
!= bfd_link_hash_defined
7383 && h
->root
.type
!= bfd_link_hash_defweak
)
7386 eh
= (struct ppc_link_hash_entry
*) h
;
7387 if (eh
->adjust_done
)
7390 sym_sec
= eh
->elf
.root
.u
.def
.section
;
7391 opd
= get_opd_info (sym_sec
);
7392 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
7394 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
7397 /* This entry has been deleted. */
7398 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
7401 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
7402 if (discarded_section (dsec
))
7404 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
7408 eh
->elf
.root
.u
.def
.value
= 0;
7409 eh
->elf
.root
.u
.def
.section
= dsec
;
7412 eh
->elf
.root
.u
.def
.value
+= adjust
;
7413 eh
->adjust_done
= 1;
7418 /* Handles decrementing dynamic reloc counts for the reloc specified by
7419 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7420 have already been determined. */
7423 dec_dynrel_count (bfd_vma r_info
,
7425 struct bfd_link_info
*info
,
7426 Elf_Internal_Sym
**local_syms
,
7427 struct elf_link_hash_entry
*h
,
7428 Elf_Internal_Sym
*sym
)
7430 enum elf_ppc64_reloc_type r_type
;
7431 asection
*sym_sec
= NULL
;
7433 /* Can this reloc be dynamic? This switch, and later tests here
7434 should be kept in sync with the code in check_relocs. */
7435 r_type
= ELF64_R_TYPE (r_info
);
7441 case R_PPC64_TPREL16
:
7442 case R_PPC64_TPREL16_LO
:
7443 case R_PPC64_TPREL16_HI
:
7444 case R_PPC64_TPREL16_HA
:
7445 case R_PPC64_TPREL16_DS
:
7446 case R_PPC64_TPREL16_LO_DS
:
7447 case R_PPC64_TPREL16_HIGH
:
7448 case R_PPC64_TPREL16_HIGHA
:
7449 case R_PPC64_TPREL16_HIGHER
:
7450 case R_PPC64_TPREL16_HIGHERA
:
7451 case R_PPC64_TPREL16_HIGHEST
:
7452 case R_PPC64_TPREL16_HIGHESTA
:
7456 case R_PPC64_TPREL64
:
7457 case R_PPC64_DTPMOD64
:
7458 case R_PPC64_DTPREL64
:
7459 case R_PPC64_ADDR64
:
7463 case R_PPC64_ADDR14
:
7464 case R_PPC64_ADDR14_BRNTAKEN
:
7465 case R_PPC64_ADDR14_BRTAKEN
:
7466 case R_PPC64_ADDR16
:
7467 case R_PPC64_ADDR16_DS
:
7468 case R_PPC64_ADDR16_HA
:
7469 case R_PPC64_ADDR16_HI
:
7470 case R_PPC64_ADDR16_HIGH
:
7471 case R_PPC64_ADDR16_HIGHA
:
7472 case R_PPC64_ADDR16_HIGHER
:
7473 case R_PPC64_ADDR16_HIGHERA
:
7474 case R_PPC64_ADDR16_HIGHEST
:
7475 case R_PPC64_ADDR16_HIGHESTA
:
7476 case R_PPC64_ADDR16_LO
:
7477 case R_PPC64_ADDR16_LO_DS
:
7478 case R_PPC64_ADDR24
:
7479 case R_PPC64_ADDR32
:
7480 case R_PPC64_UADDR16
:
7481 case R_PPC64_UADDR32
:
7482 case R_PPC64_UADDR64
:
7487 if (local_syms
!= NULL
)
7489 unsigned long r_symndx
;
7490 bfd
*ibfd
= sec
->owner
;
7492 r_symndx
= ELF64_R_SYM (r_info
);
7493 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
7498 && (must_be_dyn_reloc (info
, r_type
)
7500 && (!SYMBOLIC_BIND (info
, h
)
7501 || h
->root
.type
== bfd_link_hash_defweak
7502 || !h
->def_regular
))))
7503 || (ELIMINATE_COPY_RELOCS
7506 && (h
->root
.type
== bfd_link_hash_defweak
7507 || !h
->def_regular
)))
7514 struct elf_dyn_relocs
*p
;
7515 struct elf_dyn_relocs
**pp
;
7516 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
7518 /* elf_gc_sweep may have already removed all dyn relocs associated
7519 with local syms for a given section. Also, symbol flags are
7520 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7521 report a dynreloc miscount. */
7522 if (*pp
== NULL
&& info
->gc_sections
)
7525 while ((p
= *pp
) != NULL
)
7529 if (!must_be_dyn_reloc (info
, r_type
))
7541 struct ppc_dyn_relocs
*p
;
7542 struct ppc_dyn_relocs
**pp
;
7544 bfd_boolean is_ifunc
;
7546 if (local_syms
== NULL
)
7547 sym_sec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
7548 if (sym_sec
== NULL
)
7551 vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
7552 pp
= (struct ppc_dyn_relocs
**) vpp
;
7554 if (*pp
== NULL
&& info
->gc_sections
)
7557 is_ifunc
= ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
;
7558 while ((p
= *pp
) != NULL
)
7560 if (p
->sec
== sec
&& p
->ifunc
== is_ifunc
)
7571 info
->callbacks
->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7573 bfd_set_error (bfd_error_bad_value
);
7577 /* Remove unused Official Procedure Descriptor entries. Currently we
7578 only remove those associated with functions in discarded link-once
7579 sections, or weakly defined functions that have been overridden. It
7580 would be possible to remove many more entries for statically linked
7584 ppc64_elf_edit_opd (struct bfd_link_info
*info
)
7587 bfd_boolean some_edited
= FALSE
;
7588 asection
*need_pad
= NULL
;
7589 struct ppc_link_hash_table
*htab
;
7591 htab
= ppc_hash_table (info
);
7595 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
7598 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7599 Elf_Internal_Shdr
*symtab_hdr
;
7600 Elf_Internal_Sym
*local_syms
;
7602 struct _opd_sec_data
*opd
;
7603 bfd_boolean need_edit
, add_aux_fields
;
7604 bfd_size_type cnt_16b
= 0;
7606 if (!is_ppc64_elf (ibfd
))
7609 sec
= bfd_get_section_by_name (ibfd
, ".opd");
7610 if (sec
== NULL
|| sec
->size
== 0)
7613 if (sec
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
7616 if (sec
->output_section
== bfd_abs_section_ptr
)
7619 /* Look through the section relocs. */
7620 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
7624 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7626 /* Read the relocations. */
7627 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7629 if (relstart
== NULL
)
7632 /* First run through the relocs to check they are sane, and to
7633 determine whether we need to edit this opd section. */
7637 relend
= relstart
+ sec
->reloc_count
;
7638 for (rel
= relstart
; rel
< relend
; )
7640 enum elf_ppc64_reloc_type r_type
;
7641 unsigned long r_symndx
;
7643 struct elf_link_hash_entry
*h
;
7644 Elf_Internal_Sym
*sym
;
7646 /* .opd contains a regular array of 16 or 24 byte entries. We're
7647 only interested in the reloc pointing to a function entry
7649 if (rel
->r_offset
!= offset
7650 || rel
+ 1 >= relend
7651 || (rel
+ 1)->r_offset
!= offset
+ 8)
7653 /* If someone messes with .opd alignment then after a
7654 "ld -r" we might have padding in the middle of .opd.
7655 Also, there's nothing to prevent someone putting
7656 something silly in .opd with the assembler. No .opd
7657 optimization for them! */
7659 (*_bfd_error_handler
)
7660 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
7665 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
7666 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
7668 (*_bfd_error_handler
)
7669 (_("%B: unexpected reloc type %u in .opd section"),
7675 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7676 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7680 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7682 const char *sym_name
;
7684 sym_name
= h
->root
.root
.string
;
7686 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7689 (*_bfd_error_handler
)
7690 (_("%B: undefined sym `%s' in .opd section"),
7696 /* opd entries are always for functions defined in the
7697 current input bfd. If the symbol isn't defined in the
7698 input bfd, then we won't be using the function in this
7699 bfd; It must be defined in a linkonce section in another
7700 bfd, or is weak. It's also possible that we are
7701 discarding the function due to a linker script /DISCARD/,
7702 which we test for via the output_section. */
7703 if (sym_sec
->owner
!= ibfd
7704 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7709 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7711 if (sec
->size
== offset
+ 24)
7716 if (rel
== relend
&& sec
->size
== offset
+ 16)
7724 if (rel
->r_offset
== offset
+ 24)
7726 else if (rel
->r_offset
!= offset
+ 16)
7728 else if (rel
+ 1 < relend
7729 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7730 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7735 else if (rel
+ 2 < relend
7736 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7737 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7746 add_aux_fields
= htab
->params
->non_overlapping_opd
&& cnt_16b
> 0;
7748 if (need_edit
|| add_aux_fields
)
7750 Elf_Internal_Rela
*write_rel
;
7751 Elf_Internal_Shdr
*rel_hdr
;
7752 bfd_byte
*rptr
, *wptr
;
7753 bfd_byte
*new_contents
;
7758 new_contents
= NULL
;
7759 amt
= sec
->size
* sizeof (long) / 8;
7760 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7761 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7762 if (opd
->adjust
== NULL
)
7764 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7766 /* This seems a waste of time as input .opd sections are all
7767 zeros as generated by gcc, but I suppose there's no reason
7768 this will always be so. We might start putting something in
7769 the third word of .opd entries. */
7770 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7773 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7778 if (local_syms
!= NULL
7779 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7781 if (elf_section_data (sec
)->relocs
!= relstart
)
7785 sec
->contents
= loc
;
7786 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7789 elf_section_data (sec
)->relocs
= relstart
;
7791 new_contents
= sec
->contents
;
7794 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7795 if (new_contents
== NULL
)
7799 wptr
= new_contents
;
7800 rptr
= sec
->contents
;
7802 write_rel
= relstart
;
7806 for (rel
= relstart
; rel
< relend
; rel
++)
7808 unsigned long r_symndx
;
7810 struct elf_link_hash_entry
*h
;
7811 Elf_Internal_Sym
*sym
;
7813 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7814 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7818 if (rel
->r_offset
== offset
)
7820 struct ppc_link_hash_entry
*fdh
= NULL
;
7822 /* See if the .opd entry is full 24 byte or
7823 16 byte (with fd_aux entry overlapped with next
7826 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7827 || (rel
+ 3 < relend
7828 && rel
[2].r_offset
== offset
+ 16
7829 && rel
[3].r_offset
== offset
+ 24
7830 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7831 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7835 && h
->root
.root
.string
[0] == '.')
7837 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
7839 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7840 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7844 skip
= (sym_sec
->owner
!= ibfd
7845 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7848 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7850 /* Arrange for the function descriptor sym
7852 fdh
->elf
.root
.u
.def
.value
= 0;
7853 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7855 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7859 /* We'll be keeping this opd entry. */
7863 /* Redefine the function descriptor symbol to
7864 this location in the opd section. It is
7865 necessary to update the value here rather
7866 than using an array of adjustments as we do
7867 for local symbols, because various places
7868 in the generic ELF code use the value
7869 stored in u.def.value. */
7870 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7871 fdh
->adjust_done
= 1;
7874 /* Local syms are a bit tricky. We could
7875 tweak them as they can be cached, but
7876 we'd need to look through the local syms
7877 for the function descriptor sym which we
7878 don't have at the moment. So keep an
7879 array of adjustments. */
7880 opd
->adjust
[rel
->r_offset
/ 8]
7881 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7884 memcpy (wptr
, rptr
, opd_ent_size
);
7885 wptr
+= opd_ent_size
;
7886 if (add_aux_fields
&& opd_ent_size
== 16)
7888 memset (wptr
, '\0', 8);
7892 rptr
+= opd_ent_size
;
7893 offset
+= opd_ent_size
;
7899 && !info
->relocatable
7900 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7906 /* We need to adjust any reloc offsets to point to the
7907 new opd entries. While we're at it, we may as well
7908 remove redundant relocs. */
7909 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7910 if (write_rel
!= rel
)
7911 memcpy (write_rel
, rel
, sizeof (*rel
));
7916 sec
->size
= wptr
- new_contents
;
7917 sec
->reloc_count
= write_rel
- relstart
;
7920 free (sec
->contents
);
7921 sec
->contents
= new_contents
;
7924 /* Fudge the header size too, as this is used later in
7925 elf_bfd_final_link if we are emitting relocs. */
7926 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7927 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7930 else if (elf_section_data (sec
)->relocs
!= relstart
)
7933 if (local_syms
!= NULL
7934 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7936 if (!info
->keep_memory
)
7939 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7944 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7946 /* If we are doing a final link and the last .opd entry is just 16 byte
7947 long, add a 8 byte padding after it. */
7948 if (need_pad
!= NULL
&& !info
->relocatable
)
7952 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7954 BFD_ASSERT (need_pad
->size
> 0);
7956 p
= bfd_malloc (need_pad
->size
+ 8);
7960 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7961 p
, 0, need_pad
->size
))
7964 need_pad
->contents
= p
;
7965 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7969 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7973 need_pad
->contents
= p
;
7976 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7977 need_pad
->size
+= 8;
7983 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7986 ppc64_elf_tls_setup (struct bfd_link_info
*info
)
7988 struct ppc_link_hash_table
*htab
;
7990 htab
= ppc_hash_table (info
);
7994 if (abiversion (info
->output_bfd
) == 1)
7997 if (htab
->params
->no_multi_toc
)
7998 htab
->do_multi_toc
= 0;
7999 else if (!htab
->do_multi_toc
)
8000 htab
->params
->no_multi_toc
= 1;
8002 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
8003 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
8004 FALSE
, FALSE
, TRUE
));
8005 /* Move dynamic linking info to the function descriptor sym. */
8006 if (htab
->tls_get_addr
!= NULL
)
8007 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
8008 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
8009 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
8010 FALSE
, FALSE
, TRUE
));
8011 if (!htab
->params
->no_tls_get_addr_opt
)
8013 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
8015 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
8016 FALSE
, FALSE
, TRUE
);
8018 func_desc_adjust (opt
, info
);
8019 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
8020 FALSE
, FALSE
, TRUE
);
8022 && (opt_fd
->root
.type
== bfd_link_hash_defined
8023 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
8025 /* If glibc supports an optimized __tls_get_addr call stub,
8026 signalled by the presence of __tls_get_addr_opt, and we'll
8027 be calling __tls_get_addr via a plt call stub, then
8028 make __tls_get_addr point to __tls_get_addr_opt. */
8029 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
8030 if (htab
->elf
.dynamic_sections_created
8032 && (tga_fd
->type
== STT_FUNC
8033 || tga_fd
->needs_plt
)
8034 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
8035 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
8036 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
8038 struct plt_entry
*ent
;
8040 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8041 if (ent
->plt
.refcount
> 0)
8045 tga_fd
->root
.type
= bfd_link_hash_indirect
;
8046 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
8047 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
8048 if (opt_fd
->dynindx
!= -1)
8050 /* Use __tls_get_addr_opt in dynamic relocations. */
8051 opt_fd
->dynindx
= -1;
8052 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
8053 opt_fd
->dynstr_index
);
8054 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
8057 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
8058 tga
= &htab
->tls_get_addr
->elf
;
8059 if (opt
!= NULL
&& tga
!= NULL
)
8061 tga
->root
.type
= bfd_link_hash_indirect
;
8062 tga
->root
.u
.i
.link
= &opt
->root
;
8063 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
8064 _bfd_elf_link_hash_hide_symbol (info
, opt
,
8066 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
8068 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
8069 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
8070 if (htab
->tls_get_addr
!= NULL
)
8072 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
8073 htab
->tls_get_addr
->is_func
= 1;
8079 htab
->params
->no_tls_get_addr_opt
= TRUE
;
8081 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
8084 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8088 branch_reloc_hash_match (const bfd
*ibfd
,
8089 const Elf_Internal_Rela
*rel
,
8090 const struct ppc_link_hash_entry
*hash1
,
8091 const struct ppc_link_hash_entry
*hash2
)
8093 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
8094 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
8095 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
8097 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
8099 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
8100 struct elf_link_hash_entry
*h
;
8102 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8103 h
= elf_follow_link (h
);
8104 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
8110 /* Run through all the TLS relocs looking for optimization
8111 opportunities. The linker has been hacked (see ppc64elf.em) to do
8112 a preliminary section layout so that we know the TLS segment
8113 offsets. We can't optimize earlier because some optimizations need
8114 to know the tp offset, and we need to optimize before allocating
8115 dynamic relocations. */
8118 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
8122 struct ppc_link_hash_table
*htab
;
8123 unsigned char *toc_ref
;
8126 if (info
->relocatable
|| !info
->executable
)
8129 htab
= ppc_hash_table (info
);
8133 /* Make two passes over the relocs. On the first pass, mark toc
8134 entries involved with tls relocs, and check that tls relocs
8135 involved in setting up a tls_get_addr call are indeed followed by
8136 such a call. If they are not, we can't do any tls optimization.
8137 On the second pass twiddle tls_mask flags to notify
8138 relocate_section that optimization can be done, and adjust got
8139 and plt refcounts. */
8141 for (pass
= 0; pass
< 2; ++pass
)
8142 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8144 Elf_Internal_Sym
*locsyms
= NULL
;
8145 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
8147 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8148 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
8150 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
8151 bfd_boolean found_tls_get_addr_arg
= 0;
8153 /* Read the relocations. */
8154 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8156 if (relstart
== NULL
)
8162 relend
= relstart
+ sec
->reloc_count
;
8163 for (rel
= relstart
; rel
< relend
; rel
++)
8165 enum elf_ppc64_reloc_type r_type
;
8166 unsigned long r_symndx
;
8167 struct elf_link_hash_entry
*h
;
8168 Elf_Internal_Sym
*sym
;
8170 unsigned char *tls_mask
;
8171 unsigned char tls_set
, tls_clear
, tls_type
= 0;
8173 bfd_boolean ok_tprel
, is_local
;
8174 long toc_ref_index
= 0;
8175 int expecting_tls_get_addr
= 0;
8176 bfd_boolean ret
= FALSE
;
8178 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8179 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
8183 if (elf_section_data (sec
)->relocs
!= relstart
)
8185 if (toc_ref
!= NULL
)
8188 && (elf_symtab_hdr (ibfd
).contents
8189 != (unsigned char *) locsyms
))
8196 if (h
->root
.type
== bfd_link_hash_defined
8197 || h
->root
.type
== bfd_link_hash_defweak
)
8198 value
= h
->root
.u
.def
.value
;
8199 else if (h
->root
.type
== bfd_link_hash_undefweak
)
8203 found_tls_get_addr_arg
= 0;
8208 /* Symbols referenced by TLS relocs must be of type
8209 STT_TLS. So no need for .opd local sym adjust. */
8210 value
= sym
->st_value
;
8219 && h
->root
.type
== bfd_link_hash_undefweak
)
8223 value
+= sym_sec
->output_offset
;
8224 value
+= sym_sec
->output_section
->vma
;
8225 value
-= htab
->elf
.tls_sec
->vma
;
8226 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
8227 < (bfd_vma
) 1 << 32);
8231 r_type
= ELF64_R_TYPE (rel
->r_info
);
8232 /* If this section has old-style __tls_get_addr calls
8233 without marker relocs, then check that each
8234 __tls_get_addr call reloc is preceded by a reloc
8235 that conceivably belongs to the __tls_get_addr arg
8236 setup insn. If we don't find matching arg setup
8237 relocs, don't do any tls optimization. */
8239 && sec
->has_tls_get_addr_call
8241 && (h
== &htab
->tls_get_addr
->elf
8242 || h
== &htab
->tls_get_addr_fd
->elf
)
8243 && !found_tls_get_addr_arg
8244 && is_branch_reloc (r_type
))
8246 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
8247 "TLS optimization disabled\n"),
8248 ibfd
, sec
, rel
->r_offset
);
8253 found_tls_get_addr_arg
= 0;
8256 case R_PPC64_GOT_TLSLD16
:
8257 case R_PPC64_GOT_TLSLD16_LO
:
8258 expecting_tls_get_addr
= 1;
8259 found_tls_get_addr_arg
= 1;
8262 case R_PPC64_GOT_TLSLD16_HI
:
8263 case R_PPC64_GOT_TLSLD16_HA
:
8264 /* These relocs should never be against a symbol
8265 defined in a shared lib. Leave them alone if
8266 that turns out to be the case. */
8273 tls_type
= TLS_TLS
| TLS_LD
;
8276 case R_PPC64_GOT_TLSGD16
:
8277 case R_PPC64_GOT_TLSGD16_LO
:
8278 expecting_tls_get_addr
= 1;
8279 found_tls_get_addr_arg
= 1;
8282 case R_PPC64_GOT_TLSGD16_HI
:
8283 case R_PPC64_GOT_TLSGD16_HA
:
8289 tls_set
= TLS_TLS
| TLS_TPRELGD
;
8291 tls_type
= TLS_TLS
| TLS_GD
;
8294 case R_PPC64_GOT_TPREL16_DS
:
8295 case R_PPC64_GOT_TPREL16_LO_DS
:
8296 case R_PPC64_GOT_TPREL16_HI
:
8297 case R_PPC64_GOT_TPREL16_HA
:
8302 tls_clear
= TLS_TPREL
;
8303 tls_type
= TLS_TLS
| TLS_TPREL
;
8310 found_tls_get_addr_arg
= 1;
8315 case R_PPC64_TOC16_LO
:
8316 if (sym_sec
== NULL
|| sym_sec
!= toc
)
8319 /* Mark this toc entry as referenced by a TLS
8320 code sequence. We can do that now in the
8321 case of R_PPC64_TLS, and after checking for
8322 tls_get_addr for the TOC16 relocs. */
8323 if (toc_ref
== NULL
)
8324 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
8325 if (toc_ref
== NULL
)
8329 value
= h
->root
.u
.def
.value
;
8331 value
= sym
->st_value
;
8332 value
+= rel
->r_addend
;
8333 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
8334 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
8335 if (r_type
== R_PPC64_TLS
8336 || r_type
== R_PPC64_TLSGD
8337 || r_type
== R_PPC64_TLSLD
)
8339 toc_ref
[toc_ref_index
] = 1;
8343 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
8348 expecting_tls_get_addr
= 2;
8351 case R_PPC64_TPREL64
:
8355 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8360 tls_set
= TLS_EXPLICIT
;
8361 tls_clear
= TLS_TPREL
;
8366 case R_PPC64_DTPMOD64
:
8370 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
8372 if (rel
+ 1 < relend
8374 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
8375 && rel
[1].r_offset
== rel
->r_offset
+ 8)
8379 tls_set
= TLS_EXPLICIT
| TLS_GD
;
8382 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
8391 tls_set
= TLS_EXPLICIT
;
8402 if (!expecting_tls_get_addr
8403 || !sec
->has_tls_get_addr_call
)
8406 if (rel
+ 1 < relend
8407 && branch_reloc_hash_match (ibfd
, rel
+ 1,
8409 htab
->tls_get_addr_fd
))
8411 if (expecting_tls_get_addr
== 2)
8413 /* Check for toc tls entries. */
8414 unsigned char *toc_tls
;
8417 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
8422 if (toc_tls
!= NULL
)
8424 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
8425 found_tls_get_addr_arg
= 1;
8427 toc_ref
[toc_ref_index
] = 1;
8433 if (expecting_tls_get_addr
!= 1)
8436 /* Uh oh, we didn't find the expected call. We
8437 could just mark this symbol to exclude it
8438 from tls optimization but it's safer to skip
8439 the entire optimization. */
8440 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
8441 "TLS optimization disabled\n"),
8442 ibfd
, sec
, rel
->r_offset
);
8447 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
8449 struct plt_entry
*ent
;
8450 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
8453 if (ent
->addend
== 0)
8455 if (ent
->plt
.refcount
> 0)
8457 ent
->plt
.refcount
-= 1;
8458 expecting_tls_get_addr
= 0;
8464 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
8466 struct plt_entry
*ent
;
8467 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
8470 if (ent
->addend
== 0)
8472 if (ent
->plt
.refcount
> 0)
8473 ent
->plt
.refcount
-= 1;
8481 if ((tls_set
& TLS_EXPLICIT
) == 0)
8483 struct got_entry
*ent
;
8485 /* Adjust got entry for this reloc. */
8489 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
8491 for (; ent
!= NULL
; ent
= ent
->next
)
8492 if (ent
->addend
== rel
->r_addend
8493 && ent
->owner
== ibfd
8494 && ent
->tls_type
== tls_type
)
8501 /* We managed to get rid of a got entry. */
8502 if (ent
->got
.refcount
> 0)
8503 ent
->got
.refcount
-= 1;
8508 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8509 we'll lose one or two dyn relocs. */
8510 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
8514 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
8516 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
8522 *tls_mask
|= tls_set
;
8523 *tls_mask
&= ~tls_clear
;
8526 if (elf_section_data (sec
)->relocs
!= relstart
)
8531 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
8533 if (!info
->keep_memory
)
8536 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
8540 if (toc_ref
!= NULL
)
8545 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8546 the values of any global symbols in a toc section that has been
8547 edited. Globals in toc sections should be a rarity, so this function
8548 sets a flag if any are found in toc sections other than the one just
8549 edited, so that futher hash table traversals can be avoided. */
8551 struct adjust_toc_info
8554 unsigned long *skip
;
8555 bfd_boolean global_toc_syms
;
8558 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
8561 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
8563 struct ppc_link_hash_entry
*eh
;
8564 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
8567 if (h
->root
.type
!= bfd_link_hash_defined
8568 && h
->root
.type
!= bfd_link_hash_defweak
)
8571 eh
= (struct ppc_link_hash_entry
*) h
;
8572 if (eh
->adjust_done
)
8575 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
8577 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
8578 i
= toc_inf
->toc
->rawsize
>> 3;
8580 i
= eh
->elf
.root
.u
.def
.value
>> 3;
8582 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8584 (*_bfd_error_handler
)
8585 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
8588 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
8589 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
8592 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
8593 eh
->adjust_done
= 1;
8595 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
8596 toc_inf
->global_toc_syms
= TRUE
;
8601 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8604 ok_lo_toc_insn (unsigned int insn
)
8606 return ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8607 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8608 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8609 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8610 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8611 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8612 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8613 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8614 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8615 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8616 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8617 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8618 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8619 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8620 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8622 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8623 && ((insn
& 3) == 0 || (insn
& 3) == 3))
8624 || (insn
& (0x3f << 26)) == 12u << 26 /* addic */);
8627 /* Examine all relocs referencing .toc sections in order to remove
8628 unused .toc entries. */
8631 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
8634 struct adjust_toc_info toc_inf
;
8635 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8637 htab
->do_toc_opt
= 1;
8638 toc_inf
.global_toc_syms
= TRUE
;
8639 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8641 asection
*toc
, *sec
;
8642 Elf_Internal_Shdr
*symtab_hdr
;
8643 Elf_Internal_Sym
*local_syms
;
8644 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
8645 unsigned long *skip
, *drop
;
8646 unsigned char *used
;
8647 unsigned char *keep
, last
, some_unused
;
8649 if (!is_ppc64_elf (ibfd
))
8652 toc
= bfd_get_section_by_name (ibfd
, ".toc");
8655 || toc
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
8656 || discarded_section (toc
))
8661 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8663 /* Look at sections dropped from the final link. */
8666 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8668 if (sec
->reloc_count
== 0
8669 || !discarded_section (sec
)
8670 || get_opd_info (sec
)
8671 || (sec
->flags
& SEC_ALLOC
) == 0
8672 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8675 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
8676 if (relstart
== NULL
)
8679 /* Run through the relocs to see which toc entries might be
8681 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8683 enum elf_ppc64_reloc_type r_type
;
8684 unsigned long r_symndx
;
8686 struct elf_link_hash_entry
*h
;
8687 Elf_Internal_Sym
*sym
;
8690 r_type
= ELF64_R_TYPE (rel
->r_info
);
8697 case R_PPC64_TOC16_LO
:
8698 case R_PPC64_TOC16_HI
:
8699 case R_PPC64_TOC16_HA
:
8700 case R_PPC64_TOC16_DS
:
8701 case R_PPC64_TOC16_LO_DS
:
8705 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8706 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8714 val
= h
->root
.u
.def
.value
;
8716 val
= sym
->st_value
;
8717 val
+= rel
->r_addend
;
8719 if (val
>= toc
->size
)
8722 /* Anything in the toc ought to be aligned to 8 bytes.
8723 If not, don't mark as unused. */
8729 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8734 skip
[val
>> 3] = ref_from_discarded
;
8737 if (elf_section_data (sec
)->relocs
!= relstart
)
8741 /* For largetoc loads of address constants, we can convert
8742 . addis rx,2,addr@got@ha
8743 . ld ry,addr@got@l(rx)
8745 . addis rx,2,addr@toc@ha
8746 . addi ry,rx,addr@toc@l
8747 when addr is within 2G of the toc pointer. This then means
8748 that the word storing "addr" in the toc is no longer needed. */
8750 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8751 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8752 && toc
->reloc_count
!= 0)
8754 /* Read toc relocs. */
8755 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8757 if (toc_relocs
== NULL
)
8760 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8762 enum elf_ppc64_reloc_type r_type
;
8763 unsigned long r_symndx
;
8765 struct elf_link_hash_entry
*h
;
8766 Elf_Internal_Sym
*sym
;
8769 r_type
= ELF64_R_TYPE (rel
->r_info
);
8770 if (r_type
!= R_PPC64_ADDR64
)
8773 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8774 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8779 || discarded_section (sym_sec
))
8782 if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8787 if (h
->type
== STT_GNU_IFUNC
)
8789 val
= h
->root
.u
.def
.value
;
8793 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8795 val
= sym
->st_value
;
8797 val
+= rel
->r_addend
;
8798 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8800 /* We don't yet know the exact toc pointer value, but we
8801 know it will be somewhere in the toc section. Don't
8802 optimize if the difference from any possible toc
8803 pointer is outside [ff..f80008000, 7fff7fff]. */
8804 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8805 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8808 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8809 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8814 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8819 skip
[rel
->r_offset
>> 3]
8820 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8827 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8831 if (local_syms
!= NULL
8832 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8836 && elf_section_data (sec
)->relocs
!= relstart
)
8838 if (toc_relocs
!= NULL
8839 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8846 /* Now check all kept sections that might reference the toc.
8847 Check the toc itself last. */
8848 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8851 sec
= (sec
== toc
? NULL
8852 : sec
->next
== NULL
? toc
8853 : sec
->next
== toc
&& toc
->next
? toc
->next
8858 if (sec
->reloc_count
== 0
8859 || discarded_section (sec
)
8860 || get_opd_info (sec
)
8861 || (sec
->flags
& SEC_ALLOC
) == 0
8862 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8865 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8867 if (relstart
== NULL
)
8873 /* Mark toc entries referenced as used. */
8877 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8879 enum elf_ppc64_reloc_type r_type
;
8880 unsigned long r_symndx
;
8882 struct elf_link_hash_entry
*h
;
8883 Elf_Internal_Sym
*sym
;
8885 enum {no_check
, check_lo
, check_ha
} insn_check
;
8887 r_type
= ELF64_R_TYPE (rel
->r_info
);
8891 insn_check
= no_check
;
8894 case R_PPC64_GOT_TLSLD16_HA
:
8895 case R_PPC64_GOT_TLSGD16_HA
:
8896 case R_PPC64_GOT_TPREL16_HA
:
8897 case R_PPC64_GOT_DTPREL16_HA
:
8898 case R_PPC64_GOT16_HA
:
8899 case R_PPC64_TOC16_HA
:
8900 insn_check
= check_ha
;
8903 case R_PPC64_GOT_TLSLD16_LO
:
8904 case R_PPC64_GOT_TLSGD16_LO
:
8905 case R_PPC64_GOT_TPREL16_LO_DS
:
8906 case R_PPC64_GOT_DTPREL16_LO_DS
:
8907 case R_PPC64_GOT16_LO
:
8908 case R_PPC64_GOT16_LO_DS
:
8909 case R_PPC64_TOC16_LO
:
8910 case R_PPC64_TOC16_LO_DS
:
8911 insn_check
= check_lo
;
8915 if (insn_check
!= no_check
)
8917 bfd_vma off
= rel
->r_offset
& ~3;
8918 unsigned char buf
[4];
8921 if (!bfd_get_section_contents (ibfd
, sec
, buf
, off
, 4))
8926 insn
= bfd_get_32 (ibfd
, buf
);
8927 if (insn_check
== check_lo
8928 ? !ok_lo_toc_insn (insn
)
8929 : ((insn
& ((0x3f << 26) | 0x1f << 16))
8930 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8934 ppc64_elf_tdata (ibfd
)->unexpected_toc_insn
= 1;
8935 sprintf (str
, "%#08x", insn
);
8936 info
->callbacks
->einfo
8937 (_("%P: %H: toc optimization is not supported for"
8938 " %s instruction.\n"),
8939 ibfd
, sec
, rel
->r_offset
& ~3, str
);
8946 case R_PPC64_TOC16_LO
:
8947 case R_PPC64_TOC16_HI
:
8948 case R_PPC64_TOC16_HA
:
8949 case R_PPC64_TOC16_DS
:
8950 case R_PPC64_TOC16_LO_DS
:
8951 /* In case we're taking addresses of toc entries. */
8952 case R_PPC64_ADDR64
:
8959 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8960 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8971 val
= h
->root
.u
.def
.value
;
8973 val
= sym
->st_value
;
8974 val
+= rel
->r_addend
;
8976 if (val
>= toc
->size
)
8979 if ((skip
[val
>> 3] & can_optimize
) != 0)
8986 case R_PPC64_TOC16_HA
:
8989 case R_PPC64_TOC16_LO_DS
:
8990 off
= rel
->r_offset
;
8991 off
+= (bfd_big_endian (ibfd
) ? -2 : 3);
8992 if (!bfd_get_section_contents (ibfd
, sec
, &opc
,
8998 if ((opc
& (0x3f << 2)) == (58u << 2))
9003 /* Wrong sort of reloc, or not a ld. We may
9004 as well clear ref_from_discarded too. */
9011 /* For the toc section, we only mark as used if this
9012 entry itself isn't unused. */
9013 else if ((used
[rel
->r_offset
>> 3]
9014 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
))
9017 /* Do all the relocs again, to catch reference
9026 if (elf_section_data (sec
)->relocs
!= relstart
)
9030 /* Merge the used and skip arrays. Assume that TOC
9031 doublewords not appearing as either used or unused belong
9032 to to an entry more than one doubleword in size. */
9033 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
9034 drop
< skip
+ (toc
->size
+ 7) / 8;
9039 *drop
&= ~ref_from_discarded
;
9040 if ((*drop
& can_optimize
) != 0)
9044 else if ((*drop
& ref_from_discarded
) != 0)
9047 last
= ref_from_discarded
;
9057 bfd_byte
*contents
, *src
;
9059 Elf_Internal_Sym
*sym
;
9060 bfd_boolean local_toc_syms
= FALSE
;
9062 /* Shuffle the toc contents, and at the same time convert the
9063 skip array from booleans into offsets. */
9064 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
9067 elf_section_data (toc
)->this_hdr
.contents
= contents
;
9069 for (src
= contents
, off
= 0, drop
= skip
;
9070 src
< contents
+ toc
->size
;
9073 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
9078 memcpy (src
- off
, src
, 8);
9082 toc
->rawsize
= toc
->size
;
9083 toc
->size
= src
- contents
- off
;
9085 /* Adjust addends for relocs against the toc section sym,
9086 and optimize any accesses we can. */
9087 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9089 if (sec
->reloc_count
== 0
9090 || discarded_section (sec
))
9093 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
9095 if (relstart
== NULL
)
9098 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
9100 enum elf_ppc64_reloc_type r_type
;
9101 unsigned long r_symndx
;
9103 struct elf_link_hash_entry
*h
;
9106 r_type
= ELF64_R_TYPE (rel
->r_info
);
9113 case R_PPC64_TOC16_LO
:
9114 case R_PPC64_TOC16_HI
:
9115 case R_PPC64_TOC16_HA
:
9116 case R_PPC64_TOC16_DS
:
9117 case R_PPC64_TOC16_LO_DS
:
9118 case R_PPC64_ADDR64
:
9122 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9123 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9131 val
= h
->root
.u
.def
.value
;
9134 val
= sym
->st_value
;
9136 local_toc_syms
= TRUE
;
9139 val
+= rel
->r_addend
;
9141 if (val
> toc
->rawsize
)
9143 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
9145 else if ((skip
[val
>> 3] & can_optimize
) != 0)
9147 Elf_Internal_Rela
*tocrel
9148 = toc_relocs
+ (skip
[val
>> 3] >> 2);
9149 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
9153 case R_PPC64_TOC16_HA
:
9154 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
9157 case R_PPC64_TOC16_LO_DS
:
9158 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
9162 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9164 info
->callbacks
->einfo
9165 (_("%P: %H: %s references "
9166 "optimized away TOC entry\n"),
9167 ibfd
, sec
, rel
->r_offset
,
9168 ppc64_elf_howto_table
[r_type
]->name
);
9169 bfd_set_error (bfd_error_bad_value
);
9172 rel
->r_addend
= tocrel
->r_addend
;
9173 elf_section_data (sec
)->relocs
= relstart
;
9177 if (h
!= NULL
|| sym
->st_value
!= 0)
9180 rel
->r_addend
-= skip
[val
>> 3];
9181 elf_section_data (sec
)->relocs
= relstart
;
9184 if (elf_section_data (sec
)->relocs
!= relstart
)
9188 /* We shouldn't have local or global symbols defined in the TOC,
9189 but handle them anyway. */
9190 if (local_syms
!= NULL
)
9191 for (sym
= local_syms
;
9192 sym
< local_syms
+ symtab_hdr
->sh_info
;
9194 if (sym
->st_value
!= 0
9195 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
9199 if (sym
->st_value
> toc
->rawsize
)
9200 i
= toc
->rawsize
>> 3;
9202 i
= sym
->st_value
>> 3;
9204 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
9207 (*_bfd_error_handler
)
9208 (_("%s defined on removed toc entry"),
9209 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
9212 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
9213 sym
->st_value
= (bfd_vma
) i
<< 3;
9216 sym
->st_value
-= skip
[i
];
9217 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9220 /* Adjust any global syms defined in this toc input section. */
9221 if (toc_inf
.global_toc_syms
)
9224 toc_inf
.skip
= skip
;
9225 toc_inf
.global_toc_syms
= FALSE
;
9226 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
9230 if (toc
->reloc_count
!= 0)
9232 Elf_Internal_Shdr
*rel_hdr
;
9233 Elf_Internal_Rela
*wrel
;
9236 /* Remove unused toc relocs, and adjust those we keep. */
9237 if (toc_relocs
== NULL
)
9238 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
9240 if (toc_relocs
== NULL
)
9244 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
9245 if ((skip
[rel
->r_offset
>> 3]
9246 & (ref_from_discarded
| can_optimize
)) == 0)
9248 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
9249 wrel
->r_info
= rel
->r_info
;
9250 wrel
->r_addend
= rel
->r_addend
;
9253 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
9254 &local_syms
, NULL
, NULL
))
9257 elf_section_data (toc
)->relocs
= toc_relocs
;
9258 toc
->reloc_count
= wrel
- toc_relocs
;
9259 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
9260 sz
= rel_hdr
->sh_entsize
;
9261 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
9264 else if (toc_relocs
!= NULL
9265 && elf_section_data (toc
)->relocs
!= toc_relocs
)
9268 if (local_syms
!= NULL
9269 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9271 if (!info
->keep_memory
)
9274 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9282 /* Return true iff input section I references the TOC using
9283 instructions limited to +/-32k offsets. */
9286 ppc64_elf_has_small_toc_reloc (asection
*i
)
9288 return (is_ppc64_elf (i
->owner
)
9289 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
9292 /* Allocate space for one GOT entry. */
9295 allocate_got (struct elf_link_hash_entry
*h
,
9296 struct bfd_link_info
*info
,
9297 struct got_entry
*gent
)
9299 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9301 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
9302 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
9304 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
9305 ? 2 : 1) * sizeof (Elf64_External_Rela
);
9306 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
9308 gent
->got
.offset
= got
->size
;
9309 got
->size
+= entsize
;
9311 dyn
= htab
->elf
.dynamic_sections_created
;
9312 if (h
->type
== STT_GNU_IFUNC
)
9314 htab
->elf
.irelplt
->size
+= rentsize
;
9315 htab
->got_reli_size
+= rentsize
;
9317 else if ((info
->shared
9318 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9319 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9320 || h
->root
.type
!= bfd_link_hash_undefweak
))
9322 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
9323 relgot
->size
+= rentsize
;
9327 /* This function merges got entries in the same toc group. */
9330 merge_got_entries (struct got_entry
**pent
)
9332 struct got_entry
*ent
, *ent2
;
9334 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
9335 if (!ent
->is_indirect
)
9336 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
9337 if (!ent2
->is_indirect
9338 && ent2
->addend
== ent
->addend
9339 && ent2
->tls_type
== ent
->tls_type
9340 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
9342 ent2
->is_indirect
= TRUE
;
9343 ent2
->got
.ent
= ent
;
9347 /* Allocate space in .plt, .got and associated reloc sections for
9351 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9353 struct bfd_link_info
*info
;
9354 struct ppc_link_hash_table
*htab
;
9356 struct ppc_link_hash_entry
*eh
;
9357 struct elf_dyn_relocs
*p
;
9358 struct got_entry
**pgent
, *gent
;
9360 if (h
->root
.type
== bfd_link_hash_indirect
)
9363 info
= (struct bfd_link_info
*) inf
;
9364 htab
= ppc_hash_table (info
);
9368 if ((htab
->elf
.dynamic_sections_created
9370 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
9371 || h
->type
== STT_GNU_IFUNC
)
9373 struct plt_entry
*pent
;
9374 bfd_boolean doneone
= FALSE
;
9375 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9376 if (pent
->plt
.refcount
> 0)
9378 if (!htab
->elf
.dynamic_sections_created
9379 || h
->dynindx
== -1)
9382 pent
->plt
.offset
= s
->size
;
9383 s
->size
+= PLT_ENTRY_SIZE (htab
);
9384 s
= htab
->elf
.irelplt
;
9388 /* If this is the first .plt entry, make room for the special
9392 s
->size
+= PLT_INITIAL_ENTRY_SIZE (htab
);
9394 pent
->plt
.offset
= s
->size
;
9396 /* Make room for this entry. */
9397 s
->size
+= PLT_ENTRY_SIZE (htab
);
9399 /* Make room for the .glink code. */
9402 s
->size
+= GLINK_CALL_STUB_SIZE
;
9405 /* We need bigger stubs past index 32767. */
9406 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
9413 /* We also need to make an entry in the .rela.plt section. */
9414 s
= htab
->elf
.srelplt
;
9416 s
->size
+= sizeof (Elf64_External_Rela
);
9420 pent
->plt
.offset
= (bfd_vma
) -1;
9423 h
->plt
.plist
= NULL
;
9429 h
->plt
.plist
= NULL
;
9433 eh
= (struct ppc_link_hash_entry
*) h
;
9434 /* Run through the TLS GD got entries first if we're changing them
9436 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
9437 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9438 if (gent
->got
.refcount
> 0
9439 && (gent
->tls_type
& TLS_GD
) != 0)
9441 /* This was a GD entry that has been converted to TPREL. If
9442 there happens to be a TPREL entry we can use that one. */
9443 struct got_entry
*ent
;
9444 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
9445 if (ent
->got
.refcount
> 0
9446 && (ent
->tls_type
& TLS_TPREL
) != 0
9447 && ent
->addend
== gent
->addend
9448 && ent
->owner
== gent
->owner
)
9450 gent
->got
.refcount
= 0;
9454 /* If not, then we'll be using our own TPREL entry. */
9455 if (gent
->got
.refcount
!= 0)
9456 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
9459 /* Remove any list entry that won't generate a word in the GOT before
9460 we call merge_got_entries. Otherwise we risk merging to empty
9462 pgent
= &h
->got
.glist
;
9463 while ((gent
= *pgent
) != NULL
)
9464 if (gent
->got
.refcount
> 0)
9466 if ((gent
->tls_type
& TLS_LD
) != 0
9469 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
9470 *pgent
= gent
->next
;
9473 pgent
= &gent
->next
;
9476 *pgent
= gent
->next
;
9478 if (!htab
->do_multi_toc
)
9479 merge_got_entries (&h
->got
.glist
);
9481 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
9482 if (!gent
->is_indirect
)
9484 /* Make sure this symbol is output as a dynamic symbol.
9485 Undefined weak syms won't yet be marked as dynamic,
9486 nor will all TLS symbols. */
9487 if (h
->dynindx
== -1
9489 && h
->type
!= STT_GNU_IFUNC
9490 && htab
->elf
.dynamic_sections_created
)
9492 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9496 if (!is_ppc64_elf (gent
->owner
))
9499 allocate_got (h
, info
, gent
);
9502 if (eh
->dyn_relocs
== NULL
9503 || (!htab
->elf
.dynamic_sections_created
9504 && h
->type
!= STT_GNU_IFUNC
))
9507 /* In the shared -Bsymbolic case, discard space allocated for
9508 dynamic pc-relative relocs against symbols which turn out to be
9509 defined in regular objects. For the normal shared case, discard
9510 space for relocs that have become local due to symbol visibility
9515 /* Relocs that use pc_count are those that appear on a call insn,
9516 or certain REL relocs (see must_be_dyn_reloc) that can be
9517 generated via assembly. We want calls to protected symbols to
9518 resolve directly to the function rather than going via the plt.
9519 If people want function pointer comparisons to work as expected
9520 then they should avoid writing weird assembly. */
9521 if (SYMBOL_CALLS_LOCAL (info
, h
))
9523 struct elf_dyn_relocs
**pp
;
9525 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
9527 p
->count
-= p
->pc_count
;
9536 /* Also discard relocs on undefined weak syms with non-default
9538 if (eh
->dyn_relocs
!= NULL
9539 && h
->root
.type
== bfd_link_hash_undefweak
)
9541 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9542 eh
->dyn_relocs
= NULL
;
9544 /* Make sure this symbol is output as a dynamic symbol.
9545 Undefined weak syms won't yet be marked as dynamic. */
9546 else if (h
->dynindx
== -1
9547 && !h
->forced_local
)
9549 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9554 else if (h
->type
== STT_GNU_IFUNC
)
9556 if (!h
->non_got_ref
)
9557 eh
->dyn_relocs
= NULL
;
9559 else if (ELIMINATE_COPY_RELOCS
)
9561 /* For the non-shared case, discard space for relocs against
9562 symbols which turn out to need copy relocs or are not
9568 /* Make sure this symbol is output as a dynamic symbol.
9569 Undefined weak syms won't yet be marked as dynamic. */
9570 if (h
->dynindx
== -1
9571 && !h
->forced_local
)
9573 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9577 /* If that succeeded, we know we'll be keeping all the
9579 if (h
->dynindx
!= -1)
9583 eh
->dyn_relocs
= NULL
;
9588 /* Finally, allocate space. */
9589 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
9591 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
9592 if (eh
->elf
.type
== STT_GNU_IFUNC
)
9593 sreloc
= htab
->elf
.irelplt
;
9594 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9600 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9601 to set up space for global entry stubs. These are put in glink,
9602 after the branch table. */
9605 size_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
9607 struct bfd_link_info
*info
;
9608 struct ppc_link_hash_table
*htab
;
9609 struct plt_entry
*pent
;
9612 if (h
->root
.type
== bfd_link_hash_indirect
)
9615 if (!h
->pointer_equality_needed
)
9622 htab
= ppc_hash_table (info
);
9627 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
9628 if (pent
->plt
.offset
!= (bfd_vma
) -1
9629 && pent
->addend
== 0)
9631 /* For ELFv2, if this symbol is not defined in a regular file
9632 and we are not generating a shared library or pie, then we
9633 need to define the symbol in the executable on a call stub.
9634 This is to avoid text relocations. */
9635 s
->size
= (s
->size
+ 15) & -16;
9636 h
->root
.u
.def
.section
= s
;
9637 h
->root
.u
.def
.value
= s
->size
;
9644 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9645 read-only sections. */
9648 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
9650 if (h
->root
.type
== bfd_link_hash_indirect
)
9653 if (readonly_dynrelocs (h
))
9655 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
9657 /* Not an error, just cut short the traversal. */
9663 /* Set the sizes of the dynamic sections. */
9666 ppc64_elf_size_dynamic_sections (bfd
*output_bfd
,
9667 struct bfd_link_info
*info
)
9669 struct ppc_link_hash_table
*htab
;
9674 struct got_entry
*first_tlsld
;
9676 htab
= ppc_hash_table (info
);
9680 dynobj
= htab
->elf
.dynobj
;
9684 if (htab
->elf
.dynamic_sections_created
)
9686 /* Set the contents of the .interp section to the interpreter. */
9687 if (info
->executable
)
9689 s
= bfd_get_linker_section (dynobj
, ".interp");
9692 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9693 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9697 /* Set up .got offsets for local syms, and space for local dynamic
9699 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9701 struct got_entry
**lgot_ents
;
9702 struct got_entry
**end_lgot_ents
;
9703 struct plt_entry
**local_plt
;
9704 struct plt_entry
**end_local_plt
;
9705 unsigned char *lgot_masks
;
9706 bfd_size_type locsymcount
;
9707 Elf_Internal_Shdr
*symtab_hdr
;
9709 if (!is_ppc64_elf (ibfd
))
9712 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9714 struct ppc_dyn_relocs
*p
;
9716 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9718 if (!bfd_is_abs_section (p
->sec
)
9719 && bfd_is_abs_section (p
->sec
->output_section
))
9721 /* Input section has been discarded, either because
9722 it is a copy of a linkonce section or due to
9723 linker script /DISCARD/, so we'll be discarding
9726 else if (p
->count
!= 0)
9728 asection
*srel
= elf_section_data (p
->sec
)->sreloc
;
9730 srel
= htab
->elf
.irelplt
;
9731 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
9732 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
9733 info
->flags
|= DF_TEXTREL
;
9738 lgot_ents
= elf_local_got_ents (ibfd
);
9742 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9743 locsymcount
= symtab_hdr
->sh_info
;
9744 end_lgot_ents
= lgot_ents
+ locsymcount
;
9745 local_plt
= (struct plt_entry
**) end_lgot_ents
;
9746 end_local_plt
= local_plt
+ locsymcount
;
9747 lgot_masks
= (unsigned char *) end_local_plt
;
9748 s
= ppc64_elf_tdata (ibfd
)->got
;
9749 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
9751 struct got_entry
**pent
, *ent
;
9754 while ((ent
= *pent
) != NULL
)
9755 if (ent
->got
.refcount
> 0)
9757 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
9759 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
9764 unsigned int ent_size
= 8;
9765 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
9767 ent
->got
.offset
= s
->size
;
9768 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
9773 s
->size
+= ent_size
;
9774 if ((*lgot_masks
& PLT_IFUNC
) != 0)
9776 htab
->elf
.irelplt
->size
+= rel_size
;
9777 htab
->got_reli_size
+= rel_size
;
9779 else if (info
->shared
)
9781 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9782 srel
->size
+= rel_size
;
9791 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9792 for (; local_plt
< end_local_plt
; ++local_plt
)
9794 struct plt_entry
*ent
;
9796 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
9797 if (ent
->plt
.refcount
> 0)
9800 ent
->plt
.offset
= s
->size
;
9801 s
->size
+= PLT_ENTRY_SIZE (htab
);
9803 htab
->elf
.irelplt
->size
+= sizeof (Elf64_External_Rela
);
9806 ent
->plt
.offset
= (bfd_vma
) -1;
9810 /* Allocate global sym .plt and .got entries, and space for global
9811 sym dynamic relocs. */
9812 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
9813 /* Stash the end of glink branch table. */
9814 if (htab
->glink
!= NULL
)
9815 htab
->glink
->rawsize
= htab
->glink
->size
;
9817 if (!htab
->opd_abi
&& !info
->shared
)
9818 elf_link_hash_traverse (&htab
->elf
, size_global_entry_stubs
, info
);
9821 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9823 struct got_entry
*ent
;
9825 if (!is_ppc64_elf (ibfd
))
9828 ent
= ppc64_tlsld_got (ibfd
);
9829 if (ent
->got
.refcount
> 0)
9831 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
9833 ent
->is_indirect
= TRUE
;
9834 ent
->got
.ent
= first_tlsld
;
9838 if (first_tlsld
== NULL
)
9840 s
= ppc64_elf_tdata (ibfd
)->got
;
9841 ent
->got
.offset
= s
->size
;
9846 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
9847 srel
->size
+= sizeof (Elf64_External_Rela
);
9852 ent
->got
.offset
= (bfd_vma
) -1;
9855 /* We now have determined the sizes of the various dynamic sections.
9856 Allocate memory for them. */
9858 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9860 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9863 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9864 /* These haven't been allocated yet; don't strip. */
9866 else if (s
== htab
->elf
.sgot
9867 || s
== htab
->elf
.splt
9868 || s
== htab
->elf
.iplt
9870 || s
== htab
->dynbss
)
9872 /* Strip this section if we don't need it; see the
9875 else if (s
== htab
->glink_eh_frame
)
9877 if (!bfd_is_abs_section (s
->output_section
))
9878 /* Not sized yet. */
9881 else if (CONST_STRNEQ (s
->name
, ".rela"))
9885 if (s
!= htab
->elf
.srelplt
)
9888 /* We use the reloc_count field as a counter if we need
9889 to copy relocs into the output file. */
9895 /* It's not one of our sections, so don't allocate space. */
9901 /* If we don't need this section, strip it from the
9902 output file. This is mostly to handle .rela.bss and
9903 .rela.plt. We must create both sections in
9904 create_dynamic_sections, because they must be created
9905 before the linker maps input sections to output
9906 sections. The linker does that before
9907 adjust_dynamic_symbol is called, and it is that
9908 function which decides whether anything needs to go
9909 into these sections. */
9910 s
->flags
|= SEC_EXCLUDE
;
9914 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9917 /* Allocate memory for the section contents. We use bfd_zalloc
9918 here in case unused entries are not reclaimed before the
9919 section's contents are written out. This should not happen,
9920 but this way if it does we get a R_PPC64_NONE reloc in .rela
9921 sections instead of garbage.
9922 We also rely on the section contents being zero when writing
9924 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9925 if (s
->contents
== NULL
)
9929 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9931 if (!is_ppc64_elf (ibfd
))
9934 s
= ppc64_elf_tdata (ibfd
)->got
;
9935 if (s
!= NULL
&& s
!= htab
->elf
.sgot
)
9938 s
->flags
|= SEC_EXCLUDE
;
9941 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9942 if (s
->contents
== NULL
)
9946 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9950 s
->flags
|= SEC_EXCLUDE
;
9953 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9954 if (s
->contents
== NULL
)
9962 if (htab
->elf
.dynamic_sections_created
)
9964 bfd_boolean tls_opt
;
9966 /* Add some entries to the .dynamic section. We fill in the
9967 values later, in ppc64_elf_finish_dynamic_sections, but we
9968 must add the entries now so that we get the correct size for
9969 the .dynamic section. The DT_DEBUG entry is filled in by the
9970 dynamic linker and used by the debugger. */
9971 #define add_dynamic_entry(TAG, VAL) \
9972 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9974 if (info
->executable
)
9976 if (!add_dynamic_entry (DT_DEBUG
, 0))
9980 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
9982 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9983 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9984 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9985 || !add_dynamic_entry (DT_JMPREL
, 0)
9986 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9990 if (NO_OPD_RELOCS
&& abiversion (output_bfd
) <= 1)
9992 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9993 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9997 tls_opt
= (!htab
->params
->no_tls_get_addr_opt
9998 && htab
->tls_get_addr_fd
!= NULL
9999 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
);
10000 if (tls_opt
|| !htab
->opd_abi
)
10002 if (!add_dynamic_entry (DT_PPC64_OPT
, tls_opt
? PPC64_OPT_TLS
: 0))
10008 if (!add_dynamic_entry (DT_RELA
, 0)
10009 || !add_dynamic_entry (DT_RELASZ
, 0)
10010 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
10013 /* If any dynamic relocs apply to a read-only section,
10014 then we need a DT_TEXTREL entry. */
10015 if ((info
->flags
& DF_TEXTREL
) == 0)
10016 elf_link_hash_traverse (&htab
->elf
, maybe_set_textrel
, info
);
10018 if ((info
->flags
& DF_TEXTREL
) != 0)
10020 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10025 #undef add_dynamic_entry
10030 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10033 ppc64_elf_hash_symbol (struct elf_link_hash_entry
*h
)
10035 if (h
->plt
.plist
!= NULL
10037 && !h
->pointer_equality_needed
)
10040 return _bfd_elf_hash_symbol (h
);
10043 /* Determine the type of stub needed, if any, for a call. */
10045 static inline enum ppc_stub_type
10046 ppc_type_of_stub (asection
*input_sec
,
10047 const Elf_Internal_Rela
*rel
,
10048 struct ppc_link_hash_entry
**hash
,
10049 struct plt_entry
**plt_ent
,
10050 bfd_vma destination
,
10051 unsigned long local_off
)
10053 struct ppc_link_hash_entry
*h
= *hash
;
10055 bfd_vma branch_offset
;
10056 bfd_vma max_branch_offset
;
10057 enum elf_ppc64_reloc_type r_type
;
10061 struct plt_entry
*ent
;
10062 struct ppc_link_hash_entry
*fdh
= h
;
10064 && h
->oh
->is_func_descriptor
)
10066 fdh
= ppc_follow_link (h
->oh
);
10070 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10071 if (ent
->addend
== rel
->r_addend
10072 && ent
->plt
.offset
!= (bfd_vma
) -1)
10075 return ppc_stub_plt_call
;
10078 /* Here, we know we don't have a plt entry. If we don't have a
10079 either a defined function descriptor or a defined entry symbol
10080 in a regular object file, then it is pointless trying to make
10081 any other type of stub. */
10082 if (!is_static_defined (&fdh
->elf
)
10083 && !is_static_defined (&h
->elf
))
10084 return ppc_stub_none
;
10086 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
10088 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
10089 struct plt_entry
**local_plt
= (struct plt_entry
**)
10090 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
10091 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
10093 if (local_plt
[r_symndx
] != NULL
)
10095 struct plt_entry
*ent
;
10097 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
10098 if (ent
->addend
== rel
->r_addend
10099 && ent
->plt
.offset
!= (bfd_vma
) -1)
10102 return ppc_stub_plt_call
;
10107 /* Determine where the call point is. */
10108 location
= (input_sec
->output_offset
10109 + input_sec
->output_section
->vma
10112 branch_offset
= destination
- location
;
10113 r_type
= ELF64_R_TYPE (rel
->r_info
);
10115 /* Determine if a long branch stub is needed. */
10116 max_branch_offset
= 1 << 25;
10117 if (r_type
!= R_PPC64_REL24
)
10118 max_branch_offset
= 1 << 15;
10120 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
- local_off
)
10121 /* We need a stub. Figure out whether a long_branch or plt_branch
10122 is needed later. */
10123 return ppc_stub_long_branch
;
10125 return ppc_stub_none
;
10128 /* With power7 weakly ordered memory model, it is possible for ld.so
10129 to update a plt entry in one thread and have another thread see a
10130 stale zero toc entry. To avoid this we need some sort of acquire
10131 barrier in the call stub. One solution is to make the load of the
10132 toc word seem to appear to depend on the load of the function entry
10133 word. Another solution is to test for r2 being zero, and branch to
10134 the appropriate glink entry if so.
10136 . fake dep barrier compare
10137 . ld 12,xxx(2) ld 12,xxx(2)
10138 . mtctr 12 mtctr 12
10139 . xor 11,12,12 ld 2,xxx+8(2)
10140 . add 2,2,11 cmpldi 2,0
10141 . ld 2,xxx+8(2) bnectr+
10142 . bctr b <glink_entry>
10144 The solution involving the compare turns out to be faster, so
10145 that's what we use unless the branch won't reach. */
10147 #define ALWAYS_USE_FAKE_DEP 0
10148 #define ALWAYS_EMIT_R2SAVE 0
10150 #define PPC_LO(v) ((v) & 0xffff)
10151 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10152 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10154 static inline unsigned int
10155 plt_stub_size (struct ppc_link_hash_table
*htab
,
10156 struct ppc_stub_hash_entry
*stub_entry
,
10159 unsigned size
= 12;
10161 if (ALWAYS_EMIT_R2SAVE
10162 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10164 if (PPC_HA (off
) != 0)
10169 if (htab
->params
->plt_static_chain
)
10171 if (htab
->params
->plt_thread_safe
)
10173 if (PPC_HA (off
+ 8 + 8 * htab
->params
->plt_static_chain
) != PPC_HA (off
))
10176 if (stub_entry
->h
!= NULL
10177 && (stub_entry
->h
== htab
->tls_get_addr_fd
10178 || stub_entry
->h
== htab
->tls_get_addr
)
10179 && !htab
->params
->no_tls_get_addr_opt
)
10184 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10185 then return the padding needed to do so. */
10186 static inline unsigned int
10187 plt_stub_pad (struct ppc_link_hash_table
*htab
,
10188 struct ppc_stub_hash_entry
*stub_entry
,
10191 int stub_align
= 1 << htab
->params
->plt_stub_align
;
10192 unsigned stub_size
= plt_stub_size (htab
, stub_entry
, plt_off
);
10193 bfd_vma stub_off
= stub_entry
->stub_sec
->size
;
10195 if (((stub_off
+ stub_size
- 1) & -stub_align
) - (stub_off
& -stub_align
)
10196 > (stub_size
& -stub_align
))
10197 return stub_align
- (stub_off
& (stub_align
- 1));
10201 /* Build a .plt call stub. */
10203 static inline bfd_byte
*
10204 build_plt_stub (struct ppc_link_hash_table
*htab
,
10205 struct ppc_stub_hash_entry
*stub_entry
,
10206 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10208 bfd
*obfd
= htab
->params
->stub_bfd
;
10209 bfd_boolean plt_load_toc
= htab
->opd_abi
;
10210 bfd_boolean plt_static_chain
= htab
->params
->plt_static_chain
;
10211 bfd_boolean plt_thread_safe
= htab
->params
->plt_thread_safe
;
10212 bfd_boolean use_fake_dep
= plt_thread_safe
;
10213 bfd_vma cmp_branch_off
= 0;
10215 if (!ALWAYS_USE_FAKE_DEP
10218 && !(stub_entry
->h
!= NULL
10219 && (stub_entry
->h
== htab
->tls_get_addr_fd
10220 || stub_entry
->h
== htab
->tls_get_addr
)
10221 && !htab
->params
->no_tls_get_addr_opt
))
10223 bfd_vma pltoff
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10224 bfd_vma pltindex
= ((pltoff
- PLT_INITIAL_ENTRY_SIZE (htab
))
10225 / PLT_ENTRY_SIZE (htab
));
10226 bfd_vma glinkoff
= GLINK_CALL_STUB_SIZE
+ pltindex
* 8;
10229 if (pltindex
> 32768)
10230 glinkoff
+= (pltindex
- 32768) * 4;
10232 + htab
->glink
->output_offset
10233 + htab
->glink
->output_section
->vma
);
10234 from
= (p
- stub_entry
->stub_sec
->contents
10235 + 4 * (ALWAYS_EMIT_R2SAVE
10236 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10237 + 4 * (PPC_HA (offset
) != 0)
10238 + 4 * (PPC_HA (offset
+ 8 + 8 * plt_static_chain
)
10239 != PPC_HA (offset
))
10240 + 4 * (plt_static_chain
!= 0)
10242 + stub_entry
->stub_sec
->output_offset
10243 + stub_entry
->stub_sec
->output_section
->vma
);
10244 cmp_branch_off
= to
- from
;
10245 use_fake_dep
= cmp_branch_off
+ (1 << 25) >= (1 << 26);
10248 if (PPC_HA (offset
) != 0)
10252 if (ALWAYS_EMIT_R2SAVE
10253 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10254 r
[0].r_offset
+= 4;
10255 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10256 r
[1].r_offset
= r
[0].r_offset
+ 4;
10257 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10258 r
[1].r_addend
= r
[0].r_addend
;
10261 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10263 r
[2].r_offset
= r
[1].r_offset
+ 4;
10264 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
10265 r
[2].r_addend
= r
[0].r_addend
;
10269 r
[2].r_offset
= r
[1].r_offset
+ 8 + 8 * use_fake_dep
;
10270 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10271 r
[2].r_addend
= r
[0].r_addend
+ 8;
10272 if (plt_static_chain
)
10274 r
[3].r_offset
= r
[2].r_offset
+ 4;
10275 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10276 r
[3].r_addend
= r
[0].r_addend
+ 16;
10281 if (ALWAYS_EMIT_R2SAVE
10282 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10283 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10286 bfd_put_32 (obfd
, ADDIS_R11_R2
| PPC_HA (offset
), p
), p
+= 4;
10287 bfd_put_32 (obfd
, LD_R12_0R11
| PPC_LO (offset
), p
), p
+= 4;
10291 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
10292 bfd_put_32 (obfd
, LD_R12_0R12
| PPC_LO (offset
), p
), p
+= 4;
10295 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10297 bfd_put_32 (obfd
, ADDI_R11_R11
| PPC_LO (offset
), p
), p
+= 4;
10300 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10305 bfd_put_32 (obfd
, XOR_R2_R12_R12
, p
), p
+= 4;
10306 bfd_put_32 (obfd
, ADD_R11_R11_R2
, p
), p
+= 4;
10308 bfd_put_32 (obfd
, LD_R2_0R11
| PPC_LO (offset
+ 8), p
), p
+= 4;
10309 if (plt_static_chain
)
10310 bfd_put_32 (obfd
, LD_R11_0R11
| PPC_LO (offset
+ 16), p
), p
+= 4;
10317 if (ALWAYS_EMIT_R2SAVE
10318 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10319 r
[0].r_offset
+= 4;
10320 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10323 if (PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10325 r
[1].r_offset
= r
[0].r_offset
+ 4;
10326 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
10327 r
[1].r_addend
= r
[0].r_addend
;
10331 r
[1].r_offset
= r
[0].r_offset
+ 8 + 8 * use_fake_dep
;
10332 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10333 r
[1].r_addend
= r
[0].r_addend
+ 8 + 8 * plt_static_chain
;
10334 if (plt_static_chain
)
10336 r
[2].r_offset
= r
[1].r_offset
+ 4;
10337 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10338 r
[2].r_addend
= r
[0].r_addend
+ 8;
10343 if (ALWAYS_EMIT_R2SAVE
10344 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10345 bfd_put_32 (obfd
, STD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10346 bfd_put_32 (obfd
, LD_R12_0R2
| PPC_LO (offset
), p
), p
+= 4;
10348 && PPC_HA (offset
+ 8 + 8 * plt_static_chain
) != PPC_HA (offset
))
10350 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
10353 bfd_put_32 (obfd
, MTCTR_R12
, p
), p
+= 4;
10358 bfd_put_32 (obfd
, XOR_R11_R12_R12
, p
), p
+= 4;
10359 bfd_put_32 (obfd
, ADD_R2_R2_R11
, p
), p
+= 4;
10361 if (plt_static_chain
)
10362 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
10363 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
10366 if (plt_load_toc
&& plt_thread_safe
&& !use_fake_dep
)
10368 bfd_put_32 (obfd
, CMPLDI_R2_0
, p
), p
+= 4;
10369 bfd_put_32 (obfd
, BNECTR_P4
, p
), p
+= 4;
10370 bfd_put_32 (obfd
, B_DOT
| (cmp_branch_off
& 0x3fffffc), p
), p
+= 4;
10373 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
10377 /* Build a special .plt call stub for __tls_get_addr. */
10379 #define LD_R11_0R3 0xe9630000
10380 #define LD_R12_0R3 0xe9830000
10381 #define MR_R0_R3 0x7c601b78
10382 #define CMPDI_R11_0 0x2c2b0000
10383 #define ADD_R3_R12_R13 0x7c6c6a14
10384 #define BEQLR 0x4d820020
10385 #define MR_R3_R0 0x7c030378
10386 #define STD_R11_0R1 0xf9610000
10387 #define BCTRL 0x4e800421
10388 #define LD_R11_0R1 0xe9610000
10389 #define MTLR_R11 0x7d6803a6
10391 static inline bfd_byte
*
10392 build_tls_get_addr_stub (struct ppc_link_hash_table
*htab
,
10393 struct ppc_stub_hash_entry
*stub_entry
,
10394 bfd_byte
*p
, bfd_vma offset
, Elf_Internal_Rela
*r
)
10396 bfd
*obfd
= htab
->params
->stub_bfd
;
10398 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
10399 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
10400 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
10401 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
10402 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
10403 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
10404 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
10405 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
10406 bfd_put_32 (obfd
, STD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10409 r
[0].r_offset
+= 9 * 4;
10410 p
= build_plt_stub (htab
, stub_entry
, p
, offset
, r
);
10411 bfd_put_32 (obfd
, BCTRL
, p
- 4);
10413 bfd_put_32 (obfd
, LD_R11_0R1
+ STK_LINKER (htab
), p
), p
+= 4;
10414 bfd_put_32 (obfd
, LD_R2_0R1
+ STK_TOC (htab
), p
), p
+= 4;
10415 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
10416 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
10421 static Elf_Internal_Rela
*
10422 get_relocs (asection
*sec
, int count
)
10424 Elf_Internal_Rela
*relocs
;
10425 struct bfd_elf_section_data
*elfsec_data
;
10427 elfsec_data
= elf_section_data (sec
);
10428 relocs
= elfsec_data
->relocs
;
10429 if (relocs
== NULL
)
10431 bfd_size_type relsize
;
10432 relsize
= sec
->reloc_count
* sizeof (*relocs
);
10433 relocs
= bfd_alloc (sec
->owner
, relsize
);
10434 if (relocs
== NULL
)
10436 elfsec_data
->relocs
= relocs
;
10437 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
10438 sizeof (Elf_Internal_Shdr
));
10439 if (elfsec_data
->rela
.hdr
== NULL
)
10441 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
10442 * sizeof (Elf64_External_Rela
));
10443 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
10444 sec
->reloc_count
= 0;
10446 relocs
+= sec
->reloc_count
;
10447 sec
->reloc_count
+= count
;
10452 get_r2off (struct bfd_link_info
*info
,
10453 struct ppc_stub_hash_entry
*stub_entry
)
10455 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10456 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
10460 /* Support linking -R objects. Get the toc pointer from the
10463 if (!htab
->opd_abi
)
10465 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
10466 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
10468 if (strcmp (opd
->name
, ".opd") != 0
10469 || opd
->reloc_count
!= 0)
10471 info
->callbacks
->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10472 stub_entry
->h
->elf
.root
.root
.string
);
10473 bfd_set_error (bfd_error_bad_value
);
10476 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
10478 r2off
= bfd_get_64 (opd
->owner
, buf
);
10479 r2off
-= elf_gp (info
->output_bfd
);
10481 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
10486 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10488 struct ppc_stub_hash_entry
*stub_entry
;
10489 struct ppc_branch_hash_entry
*br_entry
;
10490 struct bfd_link_info
*info
;
10491 struct ppc_link_hash_table
*htab
;
10496 Elf_Internal_Rela
*r
;
10499 /* Massage our args to the form they really have. */
10500 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10503 htab
= ppc_hash_table (info
);
10507 /* Make a note of the offset within the stubs for this entry. */
10508 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10509 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
10511 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
10512 switch (stub_entry
->stub_type
)
10514 case ppc_stub_long_branch
:
10515 case ppc_stub_long_branch_r2off
:
10516 /* Branches are relative. This is where we are going to. */
10517 dest
= (stub_entry
->target_value
10518 + stub_entry
->target_section
->output_offset
10519 + stub_entry
->target_section
->output_section
->vma
);
10520 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10523 /* And this is where we are coming from. */
10524 off
-= (stub_entry
->stub_offset
10525 + stub_entry
->stub_sec
->output_offset
10526 + stub_entry
->stub_sec
->output_section
->vma
);
10529 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10531 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10535 htab
->stub_error
= TRUE
;
10538 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10541 if (PPC_HA (r2off
) != 0)
10544 bfd_put_32 (htab
->params
->stub_bfd
,
10545 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10548 bfd_put_32 (htab
->params
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10552 bfd_put_32 (htab
->params
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
10554 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
10556 info
->callbacks
->einfo
10557 (_("%P: long branch stub `%s' offset overflow\n"),
10558 stub_entry
->root
.string
);
10559 htab
->stub_error
= TRUE
;
10563 if (info
->emitrelocations
)
10565 r
= get_relocs (stub_entry
->stub_sec
, 1);
10568 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10569 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
10570 r
->r_addend
= dest
;
10571 if (stub_entry
->h
!= NULL
)
10573 struct elf_link_hash_entry
**hashes
;
10574 unsigned long symndx
;
10575 struct ppc_link_hash_entry
*h
;
10577 hashes
= elf_sym_hashes (htab
->params
->stub_bfd
);
10578 if (hashes
== NULL
)
10580 bfd_size_type hsize
;
10582 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
10583 hashes
= bfd_zalloc (htab
->params
->stub_bfd
, hsize
);
10584 if (hashes
== NULL
)
10586 elf_sym_hashes (htab
->params
->stub_bfd
) = hashes
;
10587 htab
->stub_globals
= 1;
10589 symndx
= htab
->stub_globals
++;
10591 hashes
[symndx
] = &h
->elf
;
10592 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
10593 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
10594 h
= ppc_follow_link (h
->oh
);
10595 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
10596 /* H is an opd symbol. The addend must be zero. */
10600 off
= (h
->elf
.root
.u
.def
.value
10601 + h
->elf
.root
.u
.def
.section
->output_offset
10602 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
10603 r
->r_addend
-= off
;
10609 case ppc_stub_plt_branch
:
10610 case ppc_stub_plt_branch_r2off
:
10611 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
10612 stub_entry
->root
.string
+ 9,
10614 if (br_entry
== NULL
)
10616 info
->callbacks
->einfo (_("%P: can't find branch stub `%s'\n"),
10617 stub_entry
->root
.string
);
10618 htab
->stub_error
= TRUE
;
10622 dest
= (stub_entry
->target_value
10623 + stub_entry
->target_section
->output_offset
10624 + stub_entry
->target_section
->output_section
->vma
);
10625 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10626 dest
+= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
10628 bfd_put_64 (htab
->brlt
->owner
, dest
,
10629 htab
->brlt
->contents
+ br_entry
->offset
);
10631 if (br_entry
->iter
== htab
->stub_iteration
)
10633 br_entry
->iter
= 0;
10635 if (htab
->relbrlt
!= NULL
)
10637 /* Create a reloc for the branch lookup table entry. */
10638 Elf_Internal_Rela rela
;
10641 rela
.r_offset
= (br_entry
->offset
10642 + htab
->brlt
->output_offset
10643 + htab
->brlt
->output_section
->vma
);
10644 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10645 rela
.r_addend
= dest
;
10647 rl
= htab
->relbrlt
->contents
;
10648 rl
+= (htab
->relbrlt
->reloc_count
++
10649 * sizeof (Elf64_External_Rela
));
10650 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
10652 else if (info
->emitrelocations
)
10654 r
= get_relocs (htab
->brlt
, 1);
10657 /* brlt, being SEC_LINKER_CREATED does not go through the
10658 normal reloc processing. Symbols and offsets are not
10659 translated from input file to output file form, so
10660 set up the offset per the output file. */
10661 r
->r_offset
= (br_entry
->offset
10662 + htab
->brlt
->output_offset
10663 + htab
->brlt
->output_section
->vma
);
10664 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10665 r
->r_addend
= dest
;
10669 dest
= (br_entry
->offset
10670 + htab
->brlt
->output_offset
10671 + htab
->brlt
->output_section
->vma
);
10674 - elf_gp (htab
->brlt
->output_section
->owner
)
10675 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10677 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10679 info
->callbacks
->einfo
10680 (_("%P: linkage table error against `%T'\n"),
10681 stub_entry
->root
.string
);
10682 bfd_set_error (bfd_error_bad_value
);
10683 htab
->stub_error
= TRUE
;
10687 if (info
->emitrelocations
)
10689 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
10692 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10693 if (bfd_big_endian (info
->output_bfd
))
10694 r
[0].r_offset
+= 2;
10695 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
10696 r
[0].r_offset
+= 4;
10697 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
10698 r
[0].r_addend
= dest
;
10699 if (PPC_HA (off
) != 0)
10701 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
10702 r
[1].r_offset
= r
[0].r_offset
+ 4;
10703 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
10704 r
[1].r_addend
= r
[0].r_addend
;
10708 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
10710 if (PPC_HA (off
) != 0)
10713 bfd_put_32 (htab
->params
->stub_bfd
,
10714 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10716 bfd_put_32 (htab
->params
->stub_bfd
,
10717 LD_R12_0R12
| PPC_LO (off
), loc
);
10722 bfd_put_32 (htab
->params
->stub_bfd
,
10723 LD_R12_0R2
| PPC_LO (off
), loc
);
10728 bfd_vma r2off
= get_r2off (info
, stub_entry
);
10730 if (r2off
== 0 && htab
->opd_abi
)
10732 htab
->stub_error
= TRUE
;
10736 bfd_put_32 (htab
->params
->stub_bfd
, STD_R2_0R1
+ STK_TOC (htab
), loc
);
10739 if (PPC_HA (off
) != 0)
10742 bfd_put_32 (htab
->params
->stub_bfd
,
10743 ADDIS_R12_R2
| PPC_HA (off
), loc
);
10745 bfd_put_32 (htab
->params
->stub_bfd
,
10746 LD_R12_0R12
| PPC_LO (off
), loc
);
10749 bfd_put_32 (htab
->params
->stub_bfd
, LD_R12_0R2
| PPC_LO (off
), loc
);
10751 if (PPC_HA (r2off
) != 0)
10755 bfd_put_32 (htab
->params
->stub_bfd
,
10756 ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
10758 if (PPC_LO (r2off
) != 0)
10762 bfd_put_32 (htab
->params
->stub_bfd
,
10763 ADDI_R2_R2
| PPC_LO (r2off
), loc
);
10767 bfd_put_32 (htab
->params
->stub_bfd
, MTCTR_R12
, loc
);
10769 bfd_put_32 (htab
->params
->stub_bfd
, BCTR
, loc
);
10772 case ppc_stub_plt_call
:
10773 case ppc_stub_plt_call_r2save
:
10774 if (stub_entry
->h
!= NULL
10775 && stub_entry
->h
->is_func_descriptor
10776 && stub_entry
->h
->oh
!= NULL
)
10778 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
10780 /* If the old-ABI "dot-symbol" is undefined make it weak so
10781 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10782 FIXME: We used to define the symbol on one of the call
10783 stubs instead, which is why we test symbol section id
10784 against htab->top_id in various places. Likely all
10785 these checks could now disappear. */
10786 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
10787 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
10788 /* Stop undo_symbol_twiddle changing it back to undefined. */
10789 fh
->was_undefined
= 0;
10792 /* Now build the stub. */
10793 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
10794 if (dest
>= (bfd_vma
) -2)
10797 plt
= htab
->elf
.splt
;
10798 if (!htab
->elf
.dynamic_sections_created
10799 || stub_entry
->h
== NULL
10800 || stub_entry
->h
->elf
.dynindx
== -1)
10801 plt
= htab
->elf
.iplt
;
10803 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
10805 if (stub_entry
->h
== NULL
10806 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
10808 Elf_Internal_Rela rela
;
10811 rela
.r_offset
= dest
;
10813 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
10815 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
10816 rela
.r_addend
= (stub_entry
->target_value
10817 + stub_entry
->target_section
->output_offset
10818 + stub_entry
->target_section
->output_section
->vma
);
10820 rl
= (htab
->elf
.irelplt
->contents
10821 + (htab
->elf
.irelplt
->reloc_count
++
10822 * sizeof (Elf64_External_Rela
)));
10823 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
10824 stub_entry
->plt_ent
->plt
.offset
|= 1;
10828 - elf_gp (plt
->output_section
->owner
)
10829 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10831 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
10833 info
->callbacks
->einfo
10834 (_("%P: linkage table error against `%T'\n"),
10835 stub_entry
->h
!= NULL
10836 ? stub_entry
->h
->elf
.root
.root
.string
10838 bfd_set_error (bfd_error_bad_value
);
10839 htab
->stub_error
= TRUE
;
10843 if (htab
->params
->plt_stub_align
!= 0)
10845 unsigned pad
= plt_stub_pad (htab
, stub_entry
, off
);
10847 stub_entry
->stub_sec
->size
+= pad
;
10848 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
10853 if (info
->emitrelocations
)
10855 r
= get_relocs (stub_entry
->stub_sec
,
10856 ((PPC_HA (off
) != 0)
10858 ? 2 + (htab
->params
->plt_static_chain
10859 && PPC_HA (off
+ 16) == PPC_HA (off
))
10863 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
10864 if (bfd_big_endian (info
->output_bfd
))
10865 r
[0].r_offset
+= 2;
10866 r
[0].r_addend
= dest
;
10868 if (stub_entry
->h
!= NULL
10869 && (stub_entry
->h
== htab
->tls_get_addr_fd
10870 || stub_entry
->h
== htab
->tls_get_addr
)
10871 && !htab
->params
->no_tls_get_addr_opt
)
10872 p
= build_tls_get_addr_stub (htab
, stub_entry
, loc
, off
, r
);
10874 p
= build_plt_stub (htab
, stub_entry
, loc
, off
, r
);
10883 stub_entry
->stub_sec
->size
+= size
;
10885 if (htab
->params
->emit_stub_syms
)
10887 struct elf_link_hash_entry
*h
;
10890 const char *const stub_str
[] = { "long_branch",
10891 "long_branch_r2off",
10893 "plt_branch_r2off",
10897 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
10898 len2
= strlen (stub_entry
->root
.string
);
10899 name
= bfd_malloc (len1
+ len2
+ 2);
10902 memcpy (name
, stub_entry
->root
.string
, 9);
10903 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
10904 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
10905 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
10908 if (h
->root
.type
== bfd_link_hash_new
)
10910 h
->root
.type
= bfd_link_hash_defined
;
10911 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
10912 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
10913 h
->ref_regular
= 1;
10914 h
->def_regular
= 1;
10915 h
->ref_regular_nonweak
= 1;
10916 h
->forced_local
= 1;
10924 /* As above, but don't actually build the stub. Just bump offset so
10925 we know stub section sizes, and select plt_branch stubs where
10926 long_branch stubs won't do. */
10929 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
10931 struct ppc_stub_hash_entry
*stub_entry
;
10932 struct bfd_link_info
*info
;
10933 struct ppc_link_hash_table
*htab
;
10937 /* Massage our args to the form they really have. */
10938 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
10941 htab
= ppc_hash_table (info
);
10945 if (stub_entry
->stub_type
== ppc_stub_plt_call
10946 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
10949 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
10950 if (off
>= (bfd_vma
) -2)
10952 plt
= htab
->elf
.splt
;
10953 if (!htab
->elf
.dynamic_sections_created
10954 || stub_entry
->h
== NULL
10955 || stub_entry
->h
->elf
.dynindx
== -1)
10956 plt
= htab
->elf
.iplt
;
10957 off
+= (plt
->output_offset
10958 + plt
->output_section
->vma
10959 - elf_gp (plt
->output_section
->owner
)
10960 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
10962 size
= plt_stub_size (htab
, stub_entry
, off
);
10963 if (htab
->params
->plt_stub_align
)
10964 size
+= plt_stub_pad (htab
, stub_entry
, off
);
10965 if (info
->emitrelocations
)
10967 stub_entry
->stub_sec
->reloc_count
10968 += ((PPC_HA (off
) != 0)
10970 ? 2 + (htab
->params
->plt_static_chain
10971 && PPC_HA (off
+ 16) == PPC_HA (off
))
10973 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10978 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10981 bfd_vma local_off
= 0;
10983 off
= (stub_entry
->target_value
10984 + stub_entry
->target_section
->output_offset
10985 + stub_entry
->target_section
->output_section
->vma
);
10986 off
-= (stub_entry
->stub_sec
->size
10987 + stub_entry
->stub_sec
->output_offset
10988 + stub_entry
->stub_sec
->output_section
->vma
);
10990 /* Reset the stub type from the plt variant in case we now
10991 can reach with a shorter stub. */
10992 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
10993 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
10996 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
10998 r2off
= get_r2off (info
, stub_entry
);
10999 if (r2off
== 0 && htab
->opd_abi
)
11001 htab
->stub_error
= TRUE
;
11005 if (PPC_HA (r2off
) != 0)
11010 local_off
= PPC64_LOCAL_ENTRY_OFFSET (stub_entry
->other
);
11012 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11013 Do the same for -R objects without function descriptors. */
11014 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26) - local_off
11015 || (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
11018 struct ppc_branch_hash_entry
*br_entry
;
11020 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
11021 stub_entry
->root
.string
+ 9,
11023 if (br_entry
== NULL
)
11025 info
->callbacks
->einfo (_("%P: can't build branch stub `%s'\n"),
11026 stub_entry
->root
.string
);
11027 htab
->stub_error
= TRUE
;
11031 if (br_entry
->iter
!= htab
->stub_iteration
)
11033 br_entry
->iter
= htab
->stub_iteration
;
11034 br_entry
->offset
= htab
->brlt
->size
;
11035 htab
->brlt
->size
+= 8;
11037 if (htab
->relbrlt
!= NULL
)
11038 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
11039 else if (info
->emitrelocations
)
11041 htab
->brlt
->reloc_count
+= 1;
11042 htab
->brlt
->flags
|= SEC_RELOC
;
11046 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
11047 off
= (br_entry
->offset
11048 + htab
->brlt
->output_offset
11049 + htab
->brlt
->output_section
->vma
11050 - elf_gp (htab
->brlt
->output_section
->owner
)
11051 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
11053 if (info
->emitrelocations
)
11055 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
11056 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11059 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
11062 if (PPC_HA (off
) != 0)
11068 if (PPC_HA (off
) != 0)
11071 if (PPC_HA (r2off
) != 0)
11073 if (PPC_LO (r2off
) != 0)
11077 else if (info
->emitrelocations
)
11079 stub_entry
->stub_sec
->reloc_count
+= 1;
11080 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
11084 stub_entry
->stub_sec
->size
+= size
;
11088 /* Set up various things so that we can make a list of input sections
11089 for each output section included in the link. Returns -1 on error,
11090 0 when no stubs will be needed, and 1 on success. */
11093 ppc64_elf_setup_section_lists (struct bfd_link_info
*info
)
11096 int top_id
, top_index
, id
;
11098 asection
**input_list
;
11100 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11105 /* Find the top input section id. */
11106 for (input_bfd
= info
->input_bfds
, top_id
= 3;
11108 input_bfd
= input_bfd
->link
.next
)
11110 for (section
= input_bfd
->sections
;
11112 section
= section
->next
)
11114 if (top_id
< section
->id
)
11115 top_id
= section
->id
;
11119 htab
->top_id
= top_id
;
11120 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
11121 htab
->stub_group
= bfd_zmalloc (amt
);
11122 if (htab
->stub_group
== NULL
)
11125 /* Set toc_off for com, und, abs and ind sections. */
11126 for (id
= 0; id
< 3; id
++)
11127 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
11129 /* We can't use output_bfd->section_count here to find the top output
11130 section index as some sections may have been removed, and
11131 strip_excluded_output_sections doesn't renumber the indices. */
11132 for (section
= info
->output_bfd
->sections
, top_index
= 0;
11134 section
= section
->next
)
11136 if (top_index
< section
->index
)
11137 top_index
= section
->index
;
11140 htab
->top_index
= top_index
;
11141 amt
= sizeof (asection
*) * (top_index
+ 1);
11142 input_list
= bfd_zmalloc (amt
);
11143 htab
->input_list
= input_list
;
11144 if (input_list
== NULL
)
11150 /* Set up for first pass at multitoc partitioning. */
11153 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
11155 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11157 htab
->toc_curr
= ppc64_elf_set_toc (info
, info
->output_bfd
);
11158 htab
->toc_bfd
= NULL
;
11159 htab
->toc_first_sec
= NULL
;
11162 /* The linker repeatedly calls this function for each TOC input section
11163 and linker generated GOT section. Group input bfds such that the toc
11164 within a group is less than 64k in size. */
11167 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
11169 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11170 bfd_vma addr
, off
, limit
;
11175 if (!htab
->second_toc_pass
)
11177 /* Keep track of the first .toc or .got section for this input bfd. */
11178 bfd_boolean new_bfd
= htab
->toc_bfd
!= isec
->owner
;
11182 htab
->toc_bfd
= isec
->owner
;
11183 htab
->toc_first_sec
= isec
;
11186 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
11187 off
= addr
- htab
->toc_curr
;
11188 limit
= 0x80008000;
11189 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
11191 if (off
+ isec
->size
> limit
)
11193 addr
= (htab
->toc_first_sec
->output_offset
11194 + htab
->toc_first_sec
->output_section
->vma
);
11195 htab
->toc_curr
= addr
;
11198 /* toc_curr is the base address of this toc group. Set elf_gp
11199 for the input section to be the offset relative to the
11200 output toc base plus 0x8000. Making the input elf_gp an
11201 offset allows us to move the toc as a whole without
11202 recalculating input elf_gp. */
11203 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
11204 off
+= TOC_BASE_OFF
;
11206 /* Die if someone uses a linker script that doesn't keep input
11207 file .toc and .got together. */
11209 && elf_gp (isec
->owner
) != 0
11210 && elf_gp (isec
->owner
) != off
)
11213 elf_gp (isec
->owner
) = off
;
11217 /* During the second pass toc_first_sec points to the start of
11218 a toc group, and toc_curr is used to track the old elf_gp.
11219 We use toc_bfd to ensure we only look at each bfd once. */
11220 if (htab
->toc_bfd
== isec
->owner
)
11222 htab
->toc_bfd
= isec
->owner
;
11224 if (htab
->toc_first_sec
== NULL
11225 || htab
->toc_curr
!= elf_gp (isec
->owner
))
11227 htab
->toc_curr
= elf_gp (isec
->owner
);
11228 htab
->toc_first_sec
= isec
;
11230 addr
= (htab
->toc_first_sec
->output_offset
11231 + htab
->toc_first_sec
->output_section
->vma
);
11232 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
11233 elf_gp (isec
->owner
) = off
;
11238 /* Called via elf_link_hash_traverse to merge GOT entries for global
11242 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11244 if (h
->root
.type
== bfd_link_hash_indirect
)
11247 merge_got_entries (&h
->got
.glist
);
11252 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11256 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
11258 struct got_entry
*gent
;
11260 if (h
->root
.type
== bfd_link_hash_indirect
)
11263 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
11264 if (!gent
->is_indirect
)
11265 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
11269 /* Called on the first multitoc pass after the last call to
11270 ppc64_elf_next_toc_section. This function removes duplicate GOT
11274 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
11276 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11277 struct bfd
*ibfd
, *ibfd2
;
11278 bfd_boolean done_something
;
11280 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
11282 if (!htab
->do_multi_toc
)
11285 /* Merge global sym got entries within a toc group. */
11286 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
11288 /* And tlsld_got. */
11289 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11291 struct got_entry
*ent
, *ent2
;
11293 if (!is_ppc64_elf (ibfd
))
11296 ent
= ppc64_tlsld_got (ibfd
);
11297 if (!ent
->is_indirect
11298 && ent
->got
.offset
!= (bfd_vma
) -1)
11300 for (ibfd2
= ibfd
->link
.next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link
.next
)
11302 if (!is_ppc64_elf (ibfd2
))
11305 ent2
= ppc64_tlsld_got (ibfd2
);
11306 if (!ent2
->is_indirect
11307 && ent2
->got
.offset
!= (bfd_vma
) -1
11308 && elf_gp (ibfd2
) == elf_gp (ibfd
))
11310 ent2
->is_indirect
= TRUE
;
11311 ent2
->got
.ent
= ent
;
11317 /* Zap sizes of got sections. */
11318 htab
->elf
.irelplt
->rawsize
= htab
->elf
.irelplt
->size
;
11319 htab
->elf
.irelplt
->size
-= htab
->got_reli_size
;
11320 htab
->got_reli_size
= 0;
11322 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11324 asection
*got
, *relgot
;
11326 if (!is_ppc64_elf (ibfd
))
11329 got
= ppc64_elf_tdata (ibfd
)->got
;
11332 got
->rawsize
= got
->size
;
11334 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
11335 relgot
->rawsize
= relgot
->size
;
11340 /* Now reallocate the got, local syms first. We don't need to
11341 allocate section contents again since we never increase size. */
11342 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11344 struct got_entry
**lgot_ents
;
11345 struct got_entry
**end_lgot_ents
;
11346 struct plt_entry
**local_plt
;
11347 struct plt_entry
**end_local_plt
;
11348 unsigned char *lgot_masks
;
11349 bfd_size_type locsymcount
;
11350 Elf_Internal_Shdr
*symtab_hdr
;
11353 if (!is_ppc64_elf (ibfd
))
11356 lgot_ents
= elf_local_got_ents (ibfd
);
11360 symtab_hdr
= &elf_symtab_hdr (ibfd
);
11361 locsymcount
= symtab_hdr
->sh_info
;
11362 end_lgot_ents
= lgot_ents
+ locsymcount
;
11363 local_plt
= (struct plt_entry
**) end_lgot_ents
;
11364 end_local_plt
= local_plt
+ locsymcount
;
11365 lgot_masks
= (unsigned char *) end_local_plt
;
11366 s
= ppc64_elf_tdata (ibfd
)->got
;
11367 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
11369 struct got_entry
*ent
;
11371 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
11373 unsigned int ent_size
= 8;
11374 unsigned int rel_size
= sizeof (Elf64_External_Rela
);
11376 ent
->got
.offset
= s
->size
;
11377 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
11382 s
->size
+= ent_size
;
11383 if ((*lgot_masks
& PLT_IFUNC
) != 0)
11385 htab
->elf
.irelplt
->size
+= rel_size
;
11386 htab
->got_reli_size
+= rel_size
;
11388 else if (info
->shared
)
11390 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11391 srel
->size
+= rel_size
;
11397 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
11399 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11401 struct got_entry
*ent
;
11403 if (!is_ppc64_elf (ibfd
))
11406 ent
= ppc64_tlsld_got (ibfd
);
11407 if (!ent
->is_indirect
11408 && ent
->got
.offset
!= (bfd_vma
) -1)
11410 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
11411 ent
->got
.offset
= s
->size
;
11415 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
11416 srel
->size
+= sizeof (Elf64_External_Rela
);
11421 done_something
= htab
->elf
.irelplt
->rawsize
!= htab
->elf
.irelplt
->size
;
11422 if (!done_something
)
11423 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
11427 if (!is_ppc64_elf (ibfd
))
11430 got
= ppc64_elf_tdata (ibfd
)->got
;
11433 done_something
= got
->rawsize
!= got
->size
;
11434 if (done_something
)
11439 if (done_something
)
11440 (*htab
->params
->layout_sections_again
) ();
11442 /* Set up for second pass over toc sections to recalculate elf_gp
11443 on input sections. */
11444 htab
->toc_bfd
= NULL
;
11445 htab
->toc_first_sec
= NULL
;
11446 htab
->second_toc_pass
= TRUE
;
11447 return done_something
;
11450 /* Called after second pass of multitoc partitioning. */
11453 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
11455 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11457 /* After the second pass, toc_curr tracks the TOC offset used
11458 for code sections below in ppc64_elf_next_input_section. */
11459 htab
->toc_curr
= TOC_BASE_OFF
;
11462 /* No toc references were found in ISEC. If the code in ISEC makes no
11463 calls, then there's no need to use toc adjusting stubs when branching
11464 into ISEC. Actually, indirect calls from ISEC are OK as they will
11465 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11466 needed, and 2 if a cyclical call-graph was found but no other reason
11467 for a stub was detected. If called from the top level, a return of
11468 2 means the same as a return of 0. */
11471 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
11475 /* Mark this section as checked. */
11476 isec
->call_check_done
= 1;
11478 /* We know none of our code bearing sections will need toc stubs. */
11479 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
11482 if (isec
->size
== 0)
11485 if (isec
->output_section
== NULL
)
11489 if (isec
->reloc_count
!= 0)
11491 Elf_Internal_Rela
*relstart
, *rel
;
11492 Elf_Internal_Sym
*local_syms
;
11493 struct ppc_link_hash_table
*htab
;
11495 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
11496 info
->keep_memory
);
11497 if (relstart
== NULL
)
11500 /* Look for branches to outside of this section. */
11502 htab
= ppc_hash_table (info
);
11506 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
11508 enum elf_ppc64_reloc_type r_type
;
11509 unsigned long r_symndx
;
11510 struct elf_link_hash_entry
*h
;
11511 struct ppc_link_hash_entry
*eh
;
11512 Elf_Internal_Sym
*sym
;
11514 struct _opd_sec_data
*opd
;
11518 r_type
= ELF64_R_TYPE (rel
->r_info
);
11519 if (r_type
!= R_PPC64_REL24
11520 && r_type
!= R_PPC64_REL14
11521 && r_type
!= R_PPC64_REL14_BRTAKEN
11522 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
11525 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11526 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
11533 /* Calls to dynamic lib functions go through a plt call stub
11535 eh
= (struct ppc_link_hash_entry
*) h
;
11537 && (eh
->elf
.plt
.plist
!= NULL
11539 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
11545 if (sym_sec
== NULL
)
11546 /* Ignore other undefined symbols. */
11549 /* Assume branches to other sections not included in the
11550 link need stubs too, to cover -R and absolute syms. */
11551 if (sym_sec
->output_section
== NULL
)
11558 sym_value
= sym
->st_value
;
11561 if (h
->root
.type
!= bfd_link_hash_defined
11562 && h
->root
.type
!= bfd_link_hash_defweak
)
11564 sym_value
= h
->root
.u
.def
.value
;
11566 sym_value
+= rel
->r_addend
;
11568 /* If this branch reloc uses an opd sym, find the code section. */
11569 opd
= get_opd_info (sym_sec
);
11572 if (h
== NULL
&& opd
->adjust
!= NULL
)
11576 adjust
= opd
->adjust
[sym
->st_value
/ 8];
11578 /* Assume deleted functions won't ever be called. */
11580 sym_value
+= adjust
;
11583 dest
= opd_entry_value (sym_sec
, sym_value
,
11584 &sym_sec
, NULL
, FALSE
);
11585 if (dest
== (bfd_vma
) -1)
11590 + sym_sec
->output_offset
11591 + sym_sec
->output_section
->vma
);
11593 /* Ignore branch to self. */
11594 if (sym_sec
== isec
)
11597 /* If the called function uses the toc, we need a stub. */
11598 if (sym_sec
->has_toc_reloc
11599 || sym_sec
->makes_toc_func_call
)
11605 /* Assume any branch that needs a long branch stub might in fact
11606 need a plt_branch stub. A plt_branch stub uses r2. */
11607 else if (dest
- (isec
->output_offset
11608 + isec
->output_section
->vma
11609 + rel
->r_offset
) + (1 << 25)
11610 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11618 /* If calling back to a section in the process of being
11619 tested, we can't say for sure that no toc adjusting stubs
11620 are needed, so don't return zero. */
11621 else if (sym_sec
->call_check_in_progress
)
11624 /* Branches to another section that itself doesn't have any TOC
11625 references are OK. Recursively call ourselves to check. */
11626 else if (!sym_sec
->call_check_done
)
11630 /* Mark current section as indeterminate, so that other
11631 sections that call back to current won't be marked as
11633 isec
->call_check_in_progress
= 1;
11634 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
11635 isec
->call_check_in_progress
= 0;
11646 if (local_syms
!= NULL
11647 && (elf_symtab_hdr (isec
->owner
).contents
11648 != (unsigned char *) local_syms
))
11650 if (elf_section_data (isec
)->relocs
!= relstart
)
11655 && isec
->map_head
.s
!= NULL
11656 && (strcmp (isec
->output_section
->name
, ".init") == 0
11657 || strcmp (isec
->output_section
->name
, ".fini") == 0))
11659 if (isec
->map_head
.s
->has_toc_reloc
11660 || isec
->map_head
.s
->makes_toc_func_call
)
11662 else if (!isec
->map_head
.s
->call_check_done
)
11665 isec
->call_check_in_progress
= 1;
11666 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
11667 isec
->call_check_in_progress
= 0;
11674 isec
->makes_toc_func_call
= 1;
11679 /* The linker repeatedly calls this function for each input section,
11680 in the order that input sections are linked into output sections.
11681 Build lists of input sections to determine groupings between which
11682 we may insert linker stubs. */
11685 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
11687 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11692 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
11693 && isec
->output_section
->index
<= htab
->top_index
)
11695 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
11696 /* Steal the link_sec pointer for our list. */
11697 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11698 /* This happens to make the list in reverse order,
11699 which is what we want. */
11700 PREV_SEC (isec
) = *list
;
11704 if (htab
->multi_toc_needed
)
11706 /* Analyse sections that aren't already flagged as needing a
11707 valid toc pointer. Exclude .fixup for the linux kernel.
11708 .fixup contains branches, but only back to the function that
11709 hit an exception. */
11710 if (!(isec
->has_toc_reloc
11711 || (isec
->flags
& SEC_CODE
) == 0
11712 || strcmp (isec
->name
, ".fixup") == 0
11713 || isec
->call_check_done
))
11715 if (toc_adjusting_stub_needed (info
, isec
) < 0)
11718 /* Make all sections use the TOC assigned for this object file.
11719 This will be wrong for pasted sections; We fix that in
11720 check_pasted_section(). */
11721 if (elf_gp (isec
->owner
) != 0)
11722 htab
->toc_curr
= elf_gp (isec
->owner
);
11725 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
11729 /* Check that all .init and .fini sections use the same toc, if they
11730 have toc relocs. */
11733 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
11735 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
11739 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11740 bfd_vma toc_off
= 0;
11743 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11744 if (i
->has_toc_reloc
)
11747 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11748 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
11753 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11754 if (i
->makes_toc_func_call
)
11756 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
11760 /* Make sure the whole pasted function uses the same toc offset. */
11762 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
11763 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
11769 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
11771 return (check_pasted_section (info
, ".init")
11772 & check_pasted_section (info
, ".fini"));
11775 /* See whether we can group stub sections together. Grouping stub
11776 sections may result in fewer stubs. More importantly, we need to
11777 put all .init* and .fini* stubs at the beginning of the .init or
11778 .fini output sections respectively, because glibc splits the
11779 _init and _fini functions into multiple parts. Putting a stub in
11780 the middle of a function is not a good idea. */
11783 group_sections (struct ppc_link_hash_table
*htab
,
11784 bfd_size_type stub_group_size
,
11785 bfd_boolean stubs_always_before_branch
)
11788 bfd_size_type stub14_group_size
;
11789 bfd_boolean suppress_size_errors
;
11791 suppress_size_errors
= FALSE
;
11792 stub14_group_size
= stub_group_size
;
11793 if (stub_group_size
== 1)
11795 /* Default values. */
11796 if (stubs_always_before_branch
)
11798 stub_group_size
= 0x1e00000;
11799 stub14_group_size
= 0x7800;
11803 stub_group_size
= 0x1c00000;
11804 stub14_group_size
= 0x7000;
11806 suppress_size_errors
= TRUE
;
11809 list
= htab
->input_list
+ htab
->top_index
;
11812 asection
*tail
= *list
;
11813 while (tail
!= NULL
)
11817 bfd_size_type total
;
11818 bfd_boolean big_sec
;
11822 total
= tail
->size
;
11823 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
11824 && ppc64_elf_section_data (tail
)->has_14bit_branch
11825 ? stub14_group_size
: stub_group_size
);
11826 if (big_sec
&& !suppress_size_errors
)
11827 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
11828 tail
->owner
, tail
);
11829 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
11831 while ((prev
= PREV_SEC (curr
)) != NULL
11832 && ((total
+= curr
->output_offset
- prev
->output_offset
)
11833 < (ppc64_elf_section_data (prev
) != NULL
11834 && ppc64_elf_section_data (prev
)->has_14bit_branch
11835 ? stub14_group_size
: stub_group_size
))
11836 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11839 /* OK, the size from the start of CURR to the end is less
11840 than stub_group_size and thus can be handled by one stub
11841 section. (or the tail section is itself larger than
11842 stub_group_size, in which case we may be toast.) We
11843 should really be keeping track of the total size of stubs
11844 added here, as stubs contribute to the final output
11845 section size. That's a little tricky, and this way will
11846 only break if stubs added make the total size more than
11847 2^25, ie. for the default stub_group_size, if stubs total
11848 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11851 prev
= PREV_SEC (tail
);
11852 /* Set up this stub group. */
11853 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11855 while (tail
!= curr
&& (tail
= prev
) != NULL
);
11857 /* But wait, there's more! Input sections up to stub_group_size
11858 bytes before the stub section can be handled by it too.
11859 Don't do this if we have a really large section after the
11860 stubs, as adding more stubs increases the chance that
11861 branches may not reach into the stub section. */
11862 if (!stubs_always_before_branch
&& !big_sec
)
11865 while (prev
!= NULL
11866 && ((total
+= tail
->output_offset
- prev
->output_offset
)
11867 < (ppc64_elf_section_data (prev
) != NULL
11868 && ppc64_elf_section_data (prev
)->has_14bit_branch
11869 ? stub14_group_size
: stub_group_size
))
11870 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
11873 prev
= PREV_SEC (tail
);
11874 htab
->stub_group
[tail
->id
].link_sec
= curr
;
11880 while (list
-- != htab
->input_list
);
11881 free (htab
->input_list
);
11885 static const unsigned char glink_eh_frame_cie
[] =
11887 0, 0, 0, 16, /* length. */
11888 0, 0, 0, 0, /* id. */
11889 1, /* CIE version. */
11890 'z', 'R', 0, /* Augmentation string. */
11891 4, /* Code alignment. */
11892 0x78, /* Data alignment. */
11894 1, /* Augmentation size. */
11895 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
11896 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
11899 /* Stripping output sections is normally done before dynamic section
11900 symbols have been allocated. This function is called later, and
11901 handles cases like htab->brlt which is mapped to its own output
11905 maybe_strip_output (struct bfd_link_info
*info
, asection
*isec
)
11907 if (isec
->size
== 0
11908 && isec
->output_section
->size
== 0
11909 && !(isec
->output_section
->flags
& SEC_KEEP
)
11910 && !bfd_section_removed_from_list (info
->output_bfd
,
11911 isec
->output_section
)
11912 && elf_section_data (isec
->output_section
)->dynindx
== 0)
11914 isec
->output_section
->flags
|= SEC_EXCLUDE
;
11915 bfd_section_list_remove (info
->output_bfd
, isec
->output_section
);
11916 info
->output_bfd
->section_count
--;
11920 /* Determine and set the size of the stub section for a final link.
11922 The basic idea here is to examine all the relocations looking for
11923 PC-relative calls to a target that is unreachable with a "bl"
11927 ppc64_elf_size_stubs (struct bfd_link_info
*info
)
11929 bfd_size_type stub_group_size
;
11930 bfd_boolean stubs_always_before_branch
;
11931 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11936 if (htab
->params
->plt_thread_safe
== -1 && !info
->executable
)
11937 htab
->params
->plt_thread_safe
= 1;
11938 if (!htab
->opd_abi
)
11939 htab
->params
->plt_thread_safe
= 0;
11940 else if (htab
->params
->plt_thread_safe
== -1)
11942 static const char *const thread_starter
[] =
11946 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11948 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11949 "mq_notify", "create_timer",
11953 "GOMP_parallel_start",
11954 "GOMP_parallel_loop_static_start",
11955 "GOMP_parallel_loop_dynamic_start",
11956 "GOMP_parallel_loop_guided_start",
11957 "GOMP_parallel_loop_runtime_start",
11958 "GOMP_parallel_sections_start",
11962 for (i
= 0; i
< sizeof (thread_starter
)/ sizeof (thread_starter
[0]); i
++)
11964 struct elf_link_hash_entry
*h
;
11965 h
= elf_link_hash_lookup (&htab
->elf
, thread_starter
[i
],
11966 FALSE
, FALSE
, TRUE
);
11967 htab
->params
->plt_thread_safe
= h
!= NULL
&& h
->ref_regular
;
11968 if (htab
->params
->plt_thread_safe
)
11972 stubs_always_before_branch
= htab
->params
->group_size
< 0;
11973 if (htab
->params
->group_size
< 0)
11974 stub_group_size
= -htab
->params
->group_size
;
11976 stub_group_size
= htab
->params
->group_size
;
11978 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
11983 unsigned int bfd_indx
;
11984 asection
*stub_sec
;
11986 htab
->stub_iteration
+= 1;
11988 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
11990 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
11992 Elf_Internal_Shdr
*symtab_hdr
;
11994 Elf_Internal_Sym
*local_syms
= NULL
;
11996 if (!is_ppc64_elf (input_bfd
))
11999 /* We'll need the symbol table in a second. */
12000 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
12001 if (symtab_hdr
->sh_info
== 0)
12004 /* Walk over each section attached to the input bfd. */
12005 for (section
= input_bfd
->sections
;
12007 section
= section
->next
)
12009 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
12011 /* If there aren't any relocs, then there's nothing more
12013 if ((section
->flags
& SEC_RELOC
) == 0
12014 || (section
->flags
& SEC_ALLOC
) == 0
12015 || (section
->flags
& SEC_LOAD
) == 0
12016 || (section
->flags
& SEC_CODE
) == 0
12017 || section
->reloc_count
== 0)
12020 /* If this section is a link-once section that will be
12021 discarded, then don't create any stubs. */
12022 if (section
->output_section
== NULL
12023 || section
->output_section
->owner
!= info
->output_bfd
)
12026 /* Get the relocs. */
12028 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
12029 info
->keep_memory
);
12030 if (internal_relocs
== NULL
)
12031 goto error_ret_free_local
;
12033 /* Now examine each relocation. */
12034 irela
= internal_relocs
;
12035 irelaend
= irela
+ section
->reloc_count
;
12036 for (; irela
< irelaend
; irela
++)
12038 enum elf_ppc64_reloc_type r_type
;
12039 unsigned int r_indx
;
12040 enum ppc_stub_type stub_type
;
12041 struct ppc_stub_hash_entry
*stub_entry
;
12042 asection
*sym_sec
, *code_sec
;
12043 bfd_vma sym_value
, code_value
;
12044 bfd_vma destination
;
12045 unsigned long local_off
;
12046 bfd_boolean ok_dest
;
12047 struct ppc_link_hash_entry
*hash
;
12048 struct ppc_link_hash_entry
*fdh
;
12049 struct elf_link_hash_entry
*h
;
12050 Elf_Internal_Sym
*sym
;
12052 const asection
*id_sec
;
12053 struct _opd_sec_data
*opd
;
12054 struct plt_entry
*plt_ent
;
12056 r_type
= ELF64_R_TYPE (irela
->r_info
);
12057 r_indx
= ELF64_R_SYM (irela
->r_info
);
12059 if (r_type
>= R_PPC64_max
)
12061 bfd_set_error (bfd_error_bad_value
);
12062 goto error_ret_free_internal
;
12065 /* Only look for stubs on branch instructions. */
12066 if (r_type
!= R_PPC64_REL24
12067 && r_type
!= R_PPC64_REL14
12068 && r_type
!= R_PPC64_REL14_BRTAKEN
12069 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
12072 /* Now determine the call target, its name, value,
12074 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
12075 r_indx
, input_bfd
))
12076 goto error_ret_free_internal
;
12077 hash
= (struct ppc_link_hash_entry
*) h
;
12084 sym_value
= sym
->st_value
;
12087 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
12088 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
12090 sym_value
= hash
->elf
.root
.u
.def
.value
;
12091 if (sym_sec
->output_section
!= NULL
)
12094 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
12095 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
12097 /* Recognise an old ABI func code entry sym, and
12098 use the func descriptor sym instead if it is
12100 if (hash
->elf
.root
.root
.string
[0] == '.'
12101 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
12103 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
12104 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
12106 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
12107 sym_value
= fdh
->elf
.root
.u
.def
.value
;
12108 if (sym_sec
->output_section
!= NULL
)
12117 bfd_set_error (bfd_error_bad_value
);
12118 goto error_ret_free_internal
;
12125 sym_value
+= irela
->r_addend
;
12126 destination
= (sym_value
12127 + sym_sec
->output_offset
12128 + sym_sec
->output_section
->vma
);
12129 local_off
= PPC64_LOCAL_ENTRY_OFFSET (hash
12134 code_sec
= sym_sec
;
12135 code_value
= sym_value
;
12136 opd
= get_opd_info (sym_sec
);
12141 if (hash
== NULL
&& opd
->adjust
!= NULL
)
12143 long adjust
= opd
->adjust
[sym_value
/ 8];
12146 code_value
+= adjust
;
12147 sym_value
+= adjust
;
12149 dest
= opd_entry_value (sym_sec
, sym_value
,
12150 &code_sec
, &code_value
, FALSE
);
12151 if (dest
!= (bfd_vma
) -1)
12153 destination
= dest
;
12156 /* Fixup old ABI sym to point at code
12158 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
12159 hash
->elf
.root
.u
.def
.section
= code_sec
;
12160 hash
->elf
.root
.u
.def
.value
= code_value
;
12165 /* Determine what (if any) linker stub is needed. */
12167 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
12168 &plt_ent
, destination
,
12171 if (stub_type
!= ppc_stub_plt_call
)
12173 /* Check whether we need a TOC adjusting stub.
12174 Since the linker pastes together pieces from
12175 different object files when creating the
12176 _init and _fini functions, it may be that a
12177 call to what looks like a local sym is in
12178 fact a call needing a TOC adjustment. */
12179 if (code_sec
!= NULL
12180 && code_sec
->output_section
!= NULL
12181 && (htab
->stub_group
[code_sec
->id
].toc_off
12182 != htab
->stub_group
[section
->id
].toc_off
)
12183 && (code_sec
->has_toc_reloc
12184 || code_sec
->makes_toc_func_call
))
12185 stub_type
= ppc_stub_long_branch_r2off
;
12188 if (stub_type
== ppc_stub_none
)
12191 /* __tls_get_addr calls might be eliminated. */
12192 if (stub_type
!= ppc_stub_plt_call
12194 && (hash
== htab
->tls_get_addr
12195 || hash
== htab
->tls_get_addr_fd
)
12196 && section
->has_tls_reloc
12197 && irela
!= internal_relocs
)
12199 /* Get tls info. */
12200 unsigned char *tls_mask
;
12202 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
12203 irela
- 1, input_bfd
))
12204 goto error_ret_free_internal
;
12205 if (*tls_mask
!= 0)
12209 if (stub_type
== ppc_stub_plt_call
12210 && irela
+ 1 < irelaend
12211 && irela
[1].r_offset
== irela
->r_offset
+ 4
12212 && ELF64_R_TYPE (irela
[1].r_info
) == R_PPC64_TOCSAVE
)
12214 if (!tocsave_find (htab
, INSERT
,
12215 &local_syms
, irela
+ 1, input_bfd
))
12216 goto error_ret_free_internal
;
12218 else if (stub_type
== ppc_stub_plt_call
)
12219 stub_type
= ppc_stub_plt_call_r2save
;
12221 /* Support for grouping stub sections. */
12222 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
12224 /* Get the name of this stub. */
12225 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
12227 goto error_ret_free_internal
;
12229 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
12230 stub_name
, FALSE
, FALSE
);
12231 if (stub_entry
!= NULL
)
12233 /* The proper stub has already been created. */
12235 if (stub_type
== ppc_stub_plt_call_r2save
)
12236 stub_entry
->stub_type
= stub_type
;
12240 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
12241 if (stub_entry
== NULL
)
12244 error_ret_free_internal
:
12245 if (elf_section_data (section
)->relocs
== NULL
)
12246 free (internal_relocs
);
12247 error_ret_free_local
:
12248 if (local_syms
!= NULL
12249 && (symtab_hdr
->contents
12250 != (unsigned char *) local_syms
))
12255 stub_entry
->stub_type
= stub_type
;
12256 if (stub_type
!= ppc_stub_plt_call
12257 && stub_type
!= ppc_stub_plt_call_r2save
)
12259 stub_entry
->target_value
= code_value
;
12260 stub_entry
->target_section
= code_sec
;
12264 stub_entry
->target_value
= sym_value
;
12265 stub_entry
->target_section
= sym_sec
;
12267 stub_entry
->h
= hash
;
12268 stub_entry
->plt_ent
= plt_ent
;
12269 stub_entry
->other
= hash
? hash
->elf
.other
: sym
->st_other
;
12271 if (stub_entry
->h
!= NULL
)
12272 htab
->stub_globals
+= 1;
12275 /* We're done with the internal relocs, free them. */
12276 if (elf_section_data (section
)->relocs
!= internal_relocs
)
12277 free (internal_relocs
);
12280 if (local_syms
!= NULL
12281 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
12283 if (!info
->keep_memory
)
12286 symtab_hdr
->contents
= (unsigned char *) local_syms
;
12290 /* We may have added some stubs. Find out the new size of the
12292 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12294 stub_sec
= stub_sec
->next
)
12295 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12297 stub_sec
->rawsize
= stub_sec
->size
;
12298 stub_sec
->size
= 0;
12299 stub_sec
->reloc_count
= 0;
12300 stub_sec
->flags
&= ~SEC_RELOC
;
12303 htab
->brlt
->size
= 0;
12304 htab
->brlt
->reloc_count
= 0;
12305 htab
->brlt
->flags
&= ~SEC_RELOC
;
12306 if (htab
->relbrlt
!= NULL
)
12307 htab
->relbrlt
->size
= 0;
12309 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
12311 if (info
->emitrelocations
12312 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12314 htab
->glink
->reloc_count
= 1;
12315 htab
->glink
->flags
|= SEC_RELOC
;
12318 if (htab
->glink_eh_frame
!= NULL
12319 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
12320 && htab
->glink_eh_frame
->output_section
->size
!= 0)
12322 size_t size
= 0, align
;
12324 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12326 stub_sec
= stub_sec
->next
)
12327 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12329 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12332 size
+= sizeof (glink_eh_frame_cie
);
12334 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12336 size
= (size
+ align
) & ~align
;
12337 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12338 htab
->glink_eh_frame
->size
= size
;
12341 if (htab
->params
->plt_stub_align
!= 0)
12342 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12344 stub_sec
= stub_sec
->next
)
12345 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12346 stub_sec
->size
= ((stub_sec
->size
12347 + (1 << htab
->params
->plt_stub_align
) - 1)
12348 & (-1 << htab
->params
->plt_stub_align
));
12350 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12352 stub_sec
= stub_sec
->next
)
12353 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12354 && stub_sec
->rawsize
!= stub_sec
->size
)
12357 /* Exit from this loop when no stubs have been added, and no stubs
12358 have changed size. */
12359 if (stub_sec
== NULL
12360 && (htab
->glink_eh_frame
== NULL
12361 || htab
->glink_eh_frame
->rawsize
== htab
->glink_eh_frame
->size
))
12364 /* Ask the linker to do its stuff. */
12365 (*htab
->params
->layout_sections_again
) ();
12368 maybe_strip_output (info
, htab
->brlt
);
12369 if (htab
->glink_eh_frame
!= NULL
)
12370 maybe_strip_output (info
, htab
->glink_eh_frame
);
12375 /* Called after we have determined section placement. If sections
12376 move, we'll be called again. Provide a value for TOCstart. */
12379 ppc64_elf_set_toc (struct bfd_link_info
*info
, bfd
*obfd
)
12384 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12385 order. The TOC starts where the first of these sections starts. */
12386 s
= bfd_get_section_by_name (obfd
, ".got");
12387 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12388 s
= bfd_get_section_by_name (obfd
, ".toc");
12389 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12390 s
= bfd_get_section_by_name (obfd
, ".tocbss");
12391 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12392 s
= bfd_get_section_by_name (obfd
, ".plt");
12393 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
12395 /* This may happen for
12396 o references to TOC base (SYM@toc / TOC[tc0]) without a
12398 o bad linker script
12399 o --gc-sections and empty TOC sections
12401 FIXME: Warn user? */
12403 /* Look for a likely section. We probably won't even be
12405 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12406 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
12408 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12411 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12412 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
12413 == (SEC_ALLOC
| SEC_SMALL_DATA
))
12416 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12417 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
12421 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
12422 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
12428 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
12430 _bfd_set_gp_value (obfd
, TOCstart
);
12432 if (info
!= NULL
&& s
!= NULL
)
12434 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12438 if (htab
->elf
.hgot
!= NULL
)
12440 htab
->elf
.hgot
->root
.u
.def
.value
= TOC_BASE_OFF
;
12441 htab
->elf
.hgot
->root
.u
.def
.section
= s
;
12446 struct bfd_link_hash_entry
*bh
= NULL
;
12447 _bfd_generic_link_add_one_symbol (info
, obfd
, ".TOC.", BSF_GLOBAL
,
12448 s
, TOC_BASE_OFF
, NULL
, FALSE
,
12455 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12456 write out any global entry stubs. */
12459 build_global_entry_stubs (struct elf_link_hash_entry
*h
, void *inf
)
12461 struct bfd_link_info
*info
;
12462 struct ppc_link_hash_table
*htab
;
12463 struct plt_entry
*pent
;
12466 if (h
->root
.type
== bfd_link_hash_indirect
)
12469 if (!h
->pointer_equality_needed
)
12472 if (h
->def_regular
)
12476 htab
= ppc_hash_table (info
);
12481 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
12482 if (pent
->plt
.offset
!= (bfd_vma
) -1
12483 && pent
->addend
== 0)
12489 p
= s
->contents
+ h
->root
.u
.def
.value
;
12490 plt
= htab
->elf
.splt
;
12491 if (!htab
->elf
.dynamic_sections_created
12492 || h
->dynindx
== -1)
12493 plt
= htab
->elf
.iplt
;
12494 off
= pent
->plt
.offset
+ plt
->output_offset
+ plt
->output_section
->vma
;
12495 off
-= h
->root
.u
.def
.value
+ s
->output_offset
+ s
->output_section
->vma
;
12497 if (off
+ 0x80008000 > 0xffffffff || (off
& 3) != 0)
12499 info
->callbacks
->einfo
12500 (_("%P: linkage table error against `%T'\n"),
12501 h
->root
.root
.string
);
12502 bfd_set_error (bfd_error_bad_value
);
12503 htab
->stub_error
= TRUE
;
12506 htab
->stub_count
[ppc_stub_global_entry
- 1] += 1;
12507 if (htab
->params
->emit_stub_syms
)
12509 size_t len
= strlen (h
->root
.root
.string
);
12510 char *name
= bfd_malloc (sizeof "12345678.global_entry." + len
);
12515 sprintf (name
, "%08x.global_entry.%s", s
->id
, h
->root
.root
.string
);
12516 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
12519 if (h
->root
.type
== bfd_link_hash_new
)
12521 h
->root
.type
= bfd_link_hash_defined
;
12522 h
->root
.u
.def
.section
= s
;
12523 h
->root
.u
.def
.value
= p
- s
->contents
;
12524 h
->ref_regular
= 1;
12525 h
->def_regular
= 1;
12526 h
->ref_regular_nonweak
= 1;
12527 h
->forced_local
= 1;
12532 if (PPC_HA (off
) != 0)
12534 bfd_put_32 (s
->owner
, ADDIS_R12_R12
| PPC_HA (off
), p
);
12537 bfd_put_32 (s
->owner
, LD_R12_0R12
| PPC_LO (off
), p
);
12539 bfd_put_32 (s
->owner
, MTCTR_R12
, p
);
12541 bfd_put_32 (s
->owner
, BCTR
, p
);
12547 /* Build all the stubs associated with the current output file.
12548 The stubs are kept in a hash table attached to the main linker
12549 hash table. This function is called via gldelf64ppc_finish. */
12552 ppc64_elf_build_stubs (struct bfd_link_info
*info
,
12555 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12556 asection
*stub_sec
;
12558 int stub_sec_count
= 0;
12563 /* Allocate memory to hold the linker stubs. */
12564 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12566 stub_sec
= stub_sec
->next
)
12567 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
12568 && stub_sec
->size
!= 0)
12570 stub_sec
->contents
= bfd_zalloc (htab
->params
->stub_bfd
, stub_sec
->size
);
12571 if (stub_sec
->contents
== NULL
)
12573 /* We want to check that built size is the same as calculated
12574 size. rawsize is a convenient location to use. */
12575 stub_sec
->rawsize
= stub_sec
->size
;
12576 stub_sec
->size
= 0;
12579 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12584 /* Build the .glink plt call stub. */
12585 if (htab
->params
->emit_stub_syms
)
12587 struct elf_link_hash_entry
*h
;
12588 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
12589 TRUE
, FALSE
, FALSE
);
12592 if (h
->root
.type
== bfd_link_hash_new
)
12594 h
->root
.type
= bfd_link_hash_defined
;
12595 h
->root
.u
.def
.section
= htab
->glink
;
12596 h
->root
.u
.def
.value
= 8;
12597 h
->ref_regular
= 1;
12598 h
->def_regular
= 1;
12599 h
->ref_regular_nonweak
= 1;
12600 h
->forced_local
= 1;
12604 plt0
= (htab
->elf
.splt
->output_section
->vma
12605 + htab
->elf
.splt
->output_offset
12607 if (info
->emitrelocations
)
12609 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
12612 r
->r_offset
= (htab
->glink
->output_offset
12613 + htab
->glink
->output_section
->vma
);
12614 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
12615 r
->r_addend
= plt0
;
12617 p
= htab
->glink
->contents
;
12618 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
12619 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
12623 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
12625 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12627 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12629 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12631 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
12633 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12635 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12637 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| 8, p
);
12639 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12641 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 16, p
);
12646 bfd_put_32 (htab
->glink
->owner
, MFLR_R0
, p
);
12648 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
12650 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
12652 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R11
| (-16 & 0xfffc), p
);
12654 bfd_put_32 (htab
->glink
->owner
, MTLR_R0
, p
);
12656 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
12658 bfd_put_32 (htab
->glink
->owner
, ADD_R11_R2_R11
, p
);
12660 bfd_put_32 (htab
->glink
->owner
, ADDI_R0_R12
| (-48 & 0xffff), p
);
12662 bfd_put_32 (htab
->glink
->owner
, LD_R12_0R11
, p
);
12664 bfd_put_32 (htab
->glink
->owner
, SRDI_R0_R0_2
, p
);
12666 bfd_put_32 (htab
->glink
->owner
, MTCTR_R12
, p
);
12668 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R11
| 8, p
);
12671 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
12673 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
12675 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
12679 /* Build the .glink lazy link call stubs. */
12681 while (p
< htab
->glink
->contents
+ htab
->glink
->rawsize
)
12687 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
12692 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
12694 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
),
12699 bfd_put_32 (htab
->glink
->owner
,
12700 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
12705 /* Build .glink global entry stubs. */
12706 if (htab
->glink
->size
> htab
->glink
->rawsize
)
12707 elf_link_hash_traverse (&htab
->elf
, build_global_entry_stubs
, info
);
12710 if (htab
->brlt
!= NULL
&& htab
->brlt
->size
!= 0)
12712 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
12714 if (htab
->brlt
->contents
== NULL
)
12717 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
12719 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
12720 htab
->relbrlt
->size
);
12721 if (htab
->relbrlt
->contents
== NULL
)
12725 if (htab
->glink_eh_frame
!= NULL
12726 && htab
->glink_eh_frame
->size
!= 0)
12729 bfd_byte
*last_fde
;
12730 size_t last_fde_len
, size
, align
, pad
;
12732 p
= bfd_zalloc (htab
->glink_eh_frame
->owner
, htab
->glink_eh_frame
->size
);
12735 htab
->glink_eh_frame
->contents
= p
;
12738 htab
->glink_eh_frame
->rawsize
= htab
->glink_eh_frame
->size
;
12740 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
12741 /* CIE length (rewrite in case little-endian). */
12742 last_fde_len
= sizeof (glink_eh_frame_cie
) - 4;
12743 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
, p
);
12744 p
+= sizeof (glink_eh_frame_cie
);
12746 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12748 stub_sec
= stub_sec
->next
)
12749 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12754 bfd_put_32 (htab
->elf
.dynobj
, 16, p
);
12757 val
= p
- htab
->glink_eh_frame
->contents
;
12758 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12760 /* Offset to stub section. */
12761 val
= (stub_sec
->output_section
->vma
12762 + stub_sec
->output_offset
);
12763 val
-= (htab
->glink_eh_frame
->output_section
->vma
12764 + htab
->glink_eh_frame
->output_offset
);
12765 val
-= p
- htab
->glink_eh_frame
->contents
;
12766 if (val
+ 0x80000000 > 0xffffffff)
12768 info
->callbacks
->einfo
12769 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12773 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12775 /* stub section size. */
12776 bfd_put_32 (htab
->elf
.dynobj
, stub_sec
->rawsize
, p
);
12778 /* Augmentation. */
12783 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
12788 bfd_put_32 (htab
->elf
.dynobj
, 20, p
);
12791 val
= p
- htab
->glink_eh_frame
->contents
;
12792 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12794 /* Offset to .glink. */
12795 val
= (htab
->glink
->output_section
->vma
12796 + htab
->glink
->output_offset
12798 val
-= (htab
->glink_eh_frame
->output_section
->vma
12799 + htab
->glink_eh_frame
->output_offset
);
12800 val
-= p
- htab
->glink_eh_frame
->contents
;
12801 if (val
+ 0x80000000 > 0xffffffff)
12803 info
->callbacks
->einfo
12804 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12805 htab
->glink
->name
);
12808 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
12811 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
- 8, p
);
12813 /* Augmentation. */
12816 *p
++ = DW_CFA_advance_loc
+ 1;
12817 *p
++ = DW_CFA_register
;
12820 *p
++ = DW_CFA_advance_loc
+ 4;
12821 *p
++ = DW_CFA_restore_extended
;
12824 /* Subsume any padding into the last FDE if user .eh_frame
12825 sections are aligned more than glink_eh_frame. Otherwise any
12826 zero padding will be seen as a terminator. */
12827 size
= p
- htab
->glink_eh_frame
->contents
;
12829 align
<<= htab
->glink_eh_frame
->output_section
->alignment_power
;
12831 pad
= ((size
+ align
) & ~align
) - size
;
12832 htab
->glink_eh_frame
->size
= size
+ pad
;
12833 bfd_put_32 (htab
->elf
.dynobj
, last_fde_len
+ pad
, last_fde
);
12836 /* Build the stubs as directed by the stub hash table. */
12837 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
12839 if (htab
->relbrlt
!= NULL
)
12840 htab
->relbrlt
->reloc_count
= 0;
12842 if (htab
->params
->plt_stub_align
!= 0)
12843 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12845 stub_sec
= stub_sec
->next
)
12846 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12847 stub_sec
->size
= ((stub_sec
->size
12848 + (1 << htab
->params
->plt_stub_align
) - 1)
12849 & (-1 << htab
->params
->plt_stub_align
));
12851 for (stub_sec
= htab
->params
->stub_bfd
->sections
;
12853 stub_sec
= stub_sec
->next
)
12854 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
12856 stub_sec_count
+= 1;
12857 if (stub_sec
->rawsize
!= stub_sec
->size
)
12861 if (stub_sec
!= NULL
12862 || (htab
->glink_eh_frame
!= NULL
12863 && htab
->glink_eh_frame
->rawsize
!= htab
->glink_eh_frame
->size
))
12865 htab
->stub_error
= TRUE
;
12866 info
->callbacks
->einfo (_("%P: stubs don't match calculated size\n"));
12869 if (htab
->stub_error
)
12874 *stats
= bfd_malloc (500);
12875 if (*stats
== NULL
)
12878 sprintf (*stats
, _("linker stubs in %u group%s\n"
12880 " toc adjust %lu\n"
12881 " long branch %lu\n"
12882 " long toc adj %lu\n"
12884 " plt call toc %lu\n"
12885 " global entry %lu"),
12887 stub_sec_count
== 1 ? "" : "s",
12888 htab
->stub_count
[ppc_stub_long_branch
- 1],
12889 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
12890 htab
->stub_count
[ppc_stub_plt_branch
- 1],
12891 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
12892 htab
->stub_count
[ppc_stub_plt_call
- 1],
12893 htab
->stub_count
[ppc_stub_plt_call_r2save
- 1],
12894 htab
->stub_count
[ppc_stub_global_entry
- 1]);
12899 /* This function undoes the changes made by add_symbol_adjust. */
12902 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
12904 struct ppc_link_hash_entry
*eh
;
12906 if (h
->root
.type
== bfd_link_hash_indirect
)
12909 eh
= (struct ppc_link_hash_entry
*) h
;
12910 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
12913 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
12918 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
12920 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
12923 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
12926 /* What to do when ld finds relocations against symbols defined in
12927 discarded sections. */
12929 static unsigned int
12930 ppc64_elf_action_discarded (asection
*sec
)
12932 if (strcmp (".opd", sec
->name
) == 0)
12935 if (strcmp (".toc", sec
->name
) == 0)
12938 if (strcmp (".toc1", sec
->name
) == 0)
12941 return _bfd_elf_default_action_discarded (sec
);
12944 /* The RELOCATE_SECTION function is called by the ELF backend linker
12945 to handle the relocations for a section.
12947 The relocs are always passed as Rela structures; if the section
12948 actually uses Rel structures, the r_addend field will always be
12951 This function is responsible for adjust the section contents as
12952 necessary, and (if using Rela relocs and generating a
12953 relocatable output file) adjusting the reloc addend as
12956 This function does not have to worry about setting the reloc
12957 address or the reloc symbol index.
12959 LOCAL_SYMS is a pointer to the swapped in local symbols.
12961 LOCAL_SECTIONS is an array giving the section in the input file
12962 corresponding to the st_shndx field of each local symbol.
12964 The global hash table entry for the global symbols can be found
12965 via elf_sym_hashes (input_bfd).
12967 When generating relocatable output, this function must handle
12968 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12969 going to be the section symbol corresponding to the output
12970 section, which means that the addend must be adjusted
12974 ppc64_elf_relocate_section (bfd
*output_bfd
,
12975 struct bfd_link_info
*info
,
12977 asection
*input_section
,
12978 bfd_byte
*contents
,
12979 Elf_Internal_Rela
*relocs
,
12980 Elf_Internal_Sym
*local_syms
,
12981 asection
**local_sections
)
12983 struct ppc_link_hash_table
*htab
;
12984 Elf_Internal_Shdr
*symtab_hdr
;
12985 struct elf_link_hash_entry
**sym_hashes
;
12986 Elf_Internal_Rela
*rel
;
12987 Elf_Internal_Rela
*relend
;
12988 Elf_Internal_Rela outrel
;
12990 struct got_entry
**local_got_ents
;
12992 bfd_boolean ret
= TRUE
;
12993 bfd_boolean is_opd
;
12994 /* Assume 'at' branch hints. */
12995 bfd_boolean is_isa_v2
= TRUE
;
12996 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
12998 /* Initialize howto table if needed. */
12999 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
13002 htab
= ppc_hash_table (info
);
13006 /* Don't relocate stub sections. */
13007 if (input_section
->owner
== htab
->params
->stub_bfd
)
13010 BFD_ASSERT (is_ppc64_elf (input_bfd
));
13012 local_got_ents
= elf_local_got_ents (input_bfd
);
13013 TOCstart
= elf_gp (output_bfd
);
13014 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
13015 sym_hashes
= elf_sym_hashes (input_bfd
);
13016 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
13019 relend
= relocs
+ input_section
->reloc_count
;
13020 for (; rel
< relend
; rel
++)
13022 enum elf_ppc64_reloc_type r_type
;
13024 bfd_reloc_status_type r
;
13025 Elf_Internal_Sym
*sym
;
13027 struct elf_link_hash_entry
*h_elf
;
13028 struct ppc_link_hash_entry
*h
;
13029 struct ppc_link_hash_entry
*fdh
;
13030 const char *sym_name
;
13031 unsigned long r_symndx
, toc_symndx
;
13032 bfd_vma toc_addend
;
13033 unsigned char tls_mask
, tls_gd
, tls_type
;
13034 unsigned char sym_type
;
13035 bfd_vma relocation
;
13036 bfd_boolean unresolved_reloc
;
13037 bfd_boolean warned
;
13038 enum { DEST_NORMAL
, DEST_OPD
, DEST_STUB
} reloc_dest
;
13041 struct ppc_stub_hash_entry
*stub_entry
;
13042 bfd_vma max_br_offset
;
13044 const Elf_Internal_Rela orig_rel
= *rel
;
13045 reloc_howto_type
*howto
;
13046 struct reloc_howto_struct alt_howto
;
13048 r_type
= ELF64_R_TYPE (rel
->r_info
);
13049 r_symndx
= ELF64_R_SYM (rel
->r_info
);
13051 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13052 symbol of the previous ADDR64 reloc. The symbol gives us the
13053 proper TOC base to use. */
13054 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
13056 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
13058 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
13064 unresolved_reloc
= FALSE
;
13067 if (r_symndx
< symtab_hdr
->sh_info
)
13069 /* It's a local symbol. */
13070 struct _opd_sec_data
*opd
;
13072 sym
= local_syms
+ r_symndx
;
13073 sec
= local_sections
[r_symndx
];
13074 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
13075 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
13076 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
13077 opd
= get_opd_info (sec
);
13078 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
13080 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
13085 /* If this is a relocation against the opd section sym
13086 and we have edited .opd, adjust the reloc addend so
13087 that ld -r and ld --emit-relocs output is correct.
13088 If it is a reloc against some other .opd symbol,
13089 then the symbol value will be adjusted later. */
13090 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
13091 rel
->r_addend
+= adjust
;
13093 relocation
+= adjust
;
13099 bfd_boolean ignored
;
13101 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
13102 r_symndx
, symtab_hdr
, sym_hashes
,
13103 h_elf
, sec
, relocation
,
13104 unresolved_reloc
, warned
, ignored
);
13105 sym_name
= h_elf
->root
.root
.string
;
13106 sym_type
= h_elf
->type
;
13108 && sec
->owner
== output_bfd
13109 && strcmp (sec
->name
, ".opd") == 0)
13111 /* This is a symbol defined in a linker script. All
13112 such are defined in output sections, even those
13113 defined by simple assignment from a symbol defined in
13114 an input section. Transfer the symbol to an
13115 appropriate input .opd section, so that a branch to
13116 this symbol will be mapped to the location specified
13117 by the opd entry. */
13118 struct bfd_link_order
*lo
;
13119 for (lo
= sec
->map_head
.link_order
; lo
!= NULL
; lo
= lo
->next
)
13120 if (lo
->type
== bfd_indirect_link_order
)
13122 asection
*isec
= lo
->u
.indirect
.section
;
13123 if (h_elf
->root
.u
.def
.value
>= isec
->output_offset
13124 && h_elf
->root
.u
.def
.value
< (isec
->output_offset
13127 h_elf
->root
.u
.def
.value
-= isec
->output_offset
;
13128 h_elf
->root
.u
.def
.section
= isec
;
13135 h
= (struct ppc_link_hash_entry
*) h_elf
;
13137 if (sec
!= NULL
&& discarded_section (sec
))
13138 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
13140 ppc64_elf_howto_table
[r_type
], 0,
13143 if (info
->relocatable
)
13146 if (h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
)
13148 relocation
= (TOCstart
13149 + htab
->stub_group
[input_section
->id
].toc_off
);
13150 sec
= bfd_abs_section_ptr
;
13151 unresolved_reloc
= FALSE
;
13154 /* TLS optimizations. Replace instruction sequences and relocs
13155 based on information we collected in tls_optimize. We edit
13156 RELOCS so that --emit-relocs will output something sensible
13157 for the final instruction stream. */
13162 tls_mask
= h
->tls_mask
;
13163 else if (local_got_ents
!= NULL
)
13165 struct plt_entry
**local_plt
= (struct plt_entry
**)
13166 (local_got_ents
+ symtab_hdr
->sh_info
);
13167 unsigned char *lgot_masks
= (unsigned char *)
13168 (local_plt
+ symtab_hdr
->sh_info
);
13169 tls_mask
= lgot_masks
[r_symndx
];
13172 && (r_type
== R_PPC64_TLS
13173 || r_type
== R_PPC64_TLSGD
13174 || r_type
== R_PPC64_TLSLD
))
13176 /* Check for toc tls entries. */
13177 unsigned char *toc_tls
;
13179 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13180 &local_syms
, rel
, input_bfd
))
13184 tls_mask
= *toc_tls
;
13187 /* Check that tls relocs are used with tls syms, and non-tls
13188 relocs are used with non-tls syms. */
13189 if (r_symndx
!= STN_UNDEF
13190 && r_type
!= R_PPC64_NONE
13192 || h
->elf
.root
.type
== bfd_link_hash_defined
13193 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
13194 && (IS_PPC64_TLS_RELOC (r_type
)
13195 != (sym_type
== STT_TLS
13196 || (sym_type
== STT_SECTION
13197 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
13200 && (r_type
== R_PPC64_TLS
13201 || r_type
== R_PPC64_TLSGD
13202 || r_type
== R_PPC64_TLSLD
))
13203 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13206 info
->callbacks
->einfo
13207 (!IS_PPC64_TLS_RELOC (r_type
)
13208 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13209 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13210 input_bfd
, input_section
, rel
->r_offset
,
13211 ppc64_elf_howto_table
[r_type
]->name
,
13215 /* Ensure reloc mapping code below stays sane. */
13216 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
13217 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
13218 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
13219 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
13220 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
13221 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
13222 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
13223 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
13224 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
13225 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
13233 case R_PPC64_LO_DS_OPT
:
13234 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13235 if ((insn
& (0x3f << 26)) != 58u << 26)
13237 insn
+= (14u << 26) - (58u << 26);
13238 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13239 r_type
= R_PPC64_TOC16_LO
;
13240 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13243 case R_PPC64_TOC16
:
13244 case R_PPC64_TOC16_LO
:
13245 case R_PPC64_TOC16_DS
:
13246 case R_PPC64_TOC16_LO_DS
:
13248 /* Check for toc tls entries. */
13249 unsigned char *toc_tls
;
13252 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
13253 &local_syms
, rel
, input_bfd
);
13259 tls_mask
= *toc_tls
;
13260 if (r_type
== R_PPC64_TOC16_DS
13261 || r_type
== R_PPC64_TOC16_LO_DS
)
13264 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
13269 /* If we found a GD reloc pair, then we might be
13270 doing a GD->IE transition. */
13273 tls_gd
= TLS_TPRELGD
;
13274 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13277 else if (retval
== 3)
13279 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13287 case R_PPC64_GOT_TPREL16_HI
:
13288 case R_PPC64_GOT_TPREL16_HA
:
13290 && (tls_mask
& TLS_TPREL
) == 0)
13292 rel
->r_offset
-= d_offset
;
13293 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13294 r_type
= R_PPC64_NONE
;
13295 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13299 case R_PPC64_GOT_TPREL16_DS
:
13300 case R_PPC64_GOT_TPREL16_LO_DS
:
13302 && (tls_mask
& TLS_TPREL
) == 0)
13305 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
13307 insn
|= 0x3c0d0000; /* addis 0,13,0 */
13308 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
13309 r_type
= R_PPC64_TPREL16_HA
;
13310 if (toc_symndx
!= 0)
13312 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13313 rel
->r_addend
= toc_addend
;
13314 /* We changed the symbol. Start over in order to
13315 get h, sym, sec etc. right. */
13320 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13326 && (tls_mask
& TLS_TPREL
) == 0)
13328 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
13329 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
13332 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13333 /* Was PPC64_TLS which sits on insn boundary, now
13334 PPC64_TPREL16_LO which is at low-order half-word. */
13335 rel
->r_offset
+= d_offset
;
13336 r_type
= R_PPC64_TPREL16_LO
;
13337 if (toc_symndx
!= 0)
13339 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
13340 rel
->r_addend
= toc_addend
;
13341 /* We changed the symbol. Start over in order to
13342 get h, sym, sec etc. right. */
13347 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13351 case R_PPC64_GOT_TLSGD16_HI
:
13352 case R_PPC64_GOT_TLSGD16_HA
:
13353 tls_gd
= TLS_TPRELGD
;
13354 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13358 case R_PPC64_GOT_TLSLD16_HI
:
13359 case R_PPC64_GOT_TLSLD16_HA
:
13360 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13363 if ((tls_mask
& tls_gd
) != 0)
13364 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13365 + R_PPC64_GOT_TPREL16_DS
);
13368 rel
->r_offset
-= d_offset
;
13369 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13370 r_type
= R_PPC64_NONE
;
13372 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13376 case R_PPC64_GOT_TLSGD16
:
13377 case R_PPC64_GOT_TLSGD16_LO
:
13378 tls_gd
= TLS_TPRELGD
;
13379 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13383 case R_PPC64_GOT_TLSLD16
:
13384 case R_PPC64_GOT_TLSLD16_LO
:
13385 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13387 unsigned int insn1
, insn2
, insn3
;
13391 offset
= (bfd_vma
) -1;
13392 /* If not using the newer R_PPC64_TLSGD/LD to mark
13393 __tls_get_addr calls, we must trust that the call
13394 stays with its arg setup insns, ie. that the next
13395 reloc is the __tls_get_addr call associated with
13396 the current reloc. Edit both insns. */
13397 if (input_section
->has_tls_get_addr_call
13398 && rel
+ 1 < relend
13399 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
13400 htab
->tls_get_addr
,
13401 htab
->tls_get_addr_fd
))
13402 offset
= rel
[1].r_offset
;
13403 if ((tls_mask
& tls_gd
) != 0)
13406 insn1
= bfd_get_32 (output_bfd
,
13407 contents
+ rel
->r_offset
- d_offset
);
13408 insn1
&= (1 << 26) - (1 << 2);
13409 insn1
|= 58 << 26; /* ld */
13410 insn2
= 0x7c636a14; /* add 3,3,13 */
13411 if (offset
!= (bfd_vma
) -1)
13412 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13413 if ((tls_mask
& TLS_EXPLICIT
) == 0)
13414 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
13415 + R_PPC64_GOT_TPREL16_DS
);
13417 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
13418 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13423 insn1
= 0x3c6d0000; /* addis 3,13,0 */
13424 insn2
= 0x38630000; /* addi 3,3,0 */
13427 /* Was an LD reloc. */
13429 sec
= local_sections
[toc_symndx
];
13431 r_symndx
< symtab_hdr
->sh_info
;
13433 if (local_sections
[r_symndx
] == sec
)
13435 if (r_symndx
>= symtab_hdr
->sh_info
)
13436 r_symndx
= STN_UNDEF
;
13437 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13438 if (r_symndx
!= STN_UNDEF
)
13439 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13440 + sec
->output_offset
13441 + sec
->output_section
->vma
);
13443 else if (toc_symndx
!= 0)
13445 r_symndx
= toc_symndx
;
13446 rel
->r_addend
= toc_addend
;
13448 r_type
= R_PPC64_TPREL16_HA
;
13449 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13450 if (offset
!= (bfd_vma
) -1)
13452 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
13453 R_PPC64_TPREL16_LO
);
13454 rel
[1].r_offset
= offset
+ d_offset
;
13455 rel
[1].r_addend
= rel
->r_addend
;
13458 bfd_put_32 (output_bfd
, insn1
,
13459 contents
+ rel
->r_offset
- d_offset
);
13460 if (offset
!= (bfd_vma
) -1)
13462 insn3
= bfd_get_32 (output_bfd
,
13463 contents
+ offset
+ 4);
13465 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13467 rel
[1].r_offset
+= 4;
13468 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13471 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13473 if ((tls_mask
& tls_gd
) == 0
13474 && (tls_gd
== 0 || toc_symndx
!= 0))
13476 /* We changed the symbol. Start over in order
13477 to get h, sym, sec etc. right. */
13484 case R_PPC64_TLSGD
:
13485 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
13487 unsigned int insn2
, insn3
;
13488 bfd_vma offset
= rel
->r_offset
;
13490 if ((tls_mask
& TLS_TPRELGD
) != 0)
13493 r_type
= R_PPC64_NONE
;
13494 insn2
= 0x7c636a14; /* add 3,3,13 */
13499 if (toc_symndx
!= 0)
13501 r_symndx
= toc_symndx
;
13502 rel
->r_addend
= toc_addend
;
13504 r_type
= R_PPC64_TPREL16_LO
;
13505 rel
->r_offset
= offset
+ d_offset
;
13506 insn2
= 0x38630000; /* addi 3,3,0 */
13508 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13509 /* Zap the reloc on the _tls_get_addr call too. */
13510 BFD_ASSERT (offset
== rel
[1].r_offset
);
13511 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13512 insn3
= bfd_get_32 (output_bfd
,
13513 contents
+ offset
+ 4);
13515 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13517 rel
->r_offset
+= 4;
13518 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13521 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13522 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
13530 case R_PPC64_TLSLD
:
13531 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
13533 unsigned int insn2
, insn3
;
13534 bfd_vma offset
= rel
->r_offset
;
13537 sec
= local_sections
[toc_symndx
];
13539 r_symndx
< symtab_hdr
->sh_info
;
13541 if (local_sections
[r_symndx
] == sec
)
13543 if (r_symndx
>= symtab_hdr
->sh_info
)
13544 r_symndx
= STN_UNDEF
;
13545 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
13546 if (r_symndx
!= STN_UNDEF
)
13547 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
13548 + sec
->output_offset
13549 + sec
->output_section
->vma
);
13551 r_type
= R_PPC64_TPREL16_LO
;
13552 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13553 rel
->r_offset
= offset
+ d_offset
;
13554 /* Zap the reloc on the _tls_get_addr call too. */
13555 BFD_ASSERT (offset
== rel
[1].r_offset
);
13556 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
13557 insn2
= 0x38630000; /* addi 3,3,0 */
13558 insn3
= bfd_get_32 (output_bfd
,
13559 contents
+ offset
+ 4);
13561 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
13563 rel
->r_offset
+= 4;
13564 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
13567 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
13573 case R_PPC64_DTPMOD64
:
13574 if (rel
+ 1 < relend
13575 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
13576 && rel
[1].r_offset
== rel
->r_offset
+ 8)
13578 if ((tls_mask
& TLS_GD
) == 0)
13580 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
13581 if ((tls_mask
& TLS_TPRELGD
) != 0)
13582 r_type
= R_PPC64_TPREL64
;
13585 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13586 r_type
= R_PPC64_NONE
;
13588 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13593 if ((tls_mask
& TLS_LD
) == 0)
13595 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
13596 r_type
= R_PPC64_NONE
;
13597 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13602 case R_PPC64_TPREL64
:
13603 if ((tls_mask
& TLS_TPREL
) == 0)
13605 r_type
= R_PPC64_NONE
;
13606 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13610 case R_PPC64_REL16_HA
:
13611 /* If we are generating a non-PIC executable, edit
13612 . 0: addis 2,12,.TOC.-0b@ha
13613 . addi 2,2,.TOC.-0b@l
13614 used by ELFv2 global entry points to set up r2, to
13617 if .TOC. is in range. */
13619 && !info
->traditional_format
13620 && h
!= NULL
&& &h
->elf
== htab
->elf
.hgot
13621 && rel
+ 1 < relend
13622 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_REL16_LO
)
13623 && rel
[1].r_offset
== rel
->r_offset
+ 4
13624 && rel
[1].r_addend
== rel
->r_addend
+ 4
13625 && relocation
+ 0x80008000 <= 0xffffffff)
13627 unsigned int insn1
, insn2
;
13628 bfd_vma offset
= rel
->r_offset
- d_offset
;
13629 insn1
= bfd_get_32 (output_bfd
, contents
+ offset
);
13630 insn2
= bfd_get_32 (output_bfd
, contents
+ offset
+ 4);
13631 if ((insn1
& 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13632 && (insn2
& 0xffff0000) == 0x38420000 /* addi 2,2 */)
13634 r_type
= R_PPC64_ADDR16_HA
;
13635 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
13636 rel
->r_addend
-= d_offset
;
13637 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_ADDR16_LO
);
13638 rel
[1].r_addend
-= d_offset
+ 4;
13639 bfd_put_32 (output_bfd
, 0x3c400000, contents
+ offset
);
13645 /* Handle other relocations that tweak non-addend part of insn. */
13647 max_br_offset
= 1 << 25;
13648 addend
= rel
->r_addend
;
13649 reloc_dest
= DEST_NORMAL
;
13655 case R_PPC64_TOCSAVE
:
13656 if (relocation
+ addend
== (rel
->r_offset
13657 + input_section
->output_offset
13658 + input_section
->output_section
->vma
)
13659 && tocsave_find (htab
, NO_INSERT
,
13660 &local_syms
, rel
, input_bfd
))
13662 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
13664 || insn
== CROR_151515
|| insn
== CROR_313131
)
13665 bfd_put_32 (input_bfd
,
13666 STD_R2_0R1
+ STK_TOC (htab
),
13667 contents
+ rel
->r_offset
);
13671 /* Branch taken prediction relocations. */
13672 case R_PPC64_ADDR14_BRTAKEN
:
13673 case R_PPC64_REL14_BRTAKEN
:
13674 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13677 /* Branch not taken prediction relocations. */
13678 case R_PPC64_ADDR14_BRNTAKEN
:
13679 case R_PPC64_REL14_BRNTAKEN
:
13680 insn
|= bfd_get_32 (output_bfd
,
13681 contents
+ rel
->r_offset
) & ~(0x01 << 21);
13684 case R_PPC64_REL14
:
13685 max_br_offset
= 1 << 15;
13688 case R_PPC64_REL24
:
13689 /* Calls to functions with a different TOC, such as calls to
13690 shared objects, need to alter the TOC pointer. This is
13691 done using a linkage stub. A REL24 branching to these
13692 linkage stubs needs to be followed by a nop, as the nop
13693 will be replaced with an instruction to restore the TOC
13698 && h
->oh
->is_func_descriptor
)
13699 fdh
= ppc_follow_link (h
->oh
);
13700 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, &orig_rel
,
13702 if (stub_entry
!= NULL
13703 && (stub_entry
->stub_type
== ppc_stub_plt_call
13704 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
13705 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
13706 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
13708 bfd_boolean can_plt_call
= FALSE
;
13710 /* All of these stubs will modify r2, so there must be a
13711 branch and link followed by a nop. The nop is
13712 replaced by an insn to restore r2. */
13713 if (rel
->r_offset
+ 8 <= input_section
->size
)
13717 br
= bfd_get_32 (input_bfd
,
13718 contents
+ rel
->r_offset
);
13723 nop
= bfd_get_32 (input_bfd
,
13724 contents
+ rel
->r_offset
+ 4);
13726 || nop
== CROR_151515
|| nop
== CROR_313131
)
13729 && (h
== htab
->tls_get_addr_fd
13730 || h
== htab
->tls_get_addr
)
13731 && !htab
->params
->no_tls_get_addr_opt
)
13733 /* Special stub used, leave nop alone. */
13736 bfd_put_32 (input_bfd
,
13737 LD_R2_0R1
+ STK_TOC (htab
),
13738 contents
+ rel
->r_offset
+ 4);
13739 can_plt_call
= TRUE
;
13744 if (!can_plt_call
&& h
!= NULL
)
13746 const char *name
= h
->elf
.root
.root
.string
;
13751 if (strncmp (name
, "__libc_start_main", 17) == 0
13752 && (name
[17] == 0 || name
[17] == '@'))
13754 /* Allow crt1 branch to go via a toc adjusting
13755 stub. Other calls that never return could do
13756 the same, if we could detect such. */
13757 can_plt_call
= TRUE
;
13763 /* g++ as of 20130507 emits self-calls without a
13764 following nop. This is arguably wrong since we
13765 have conflicting information. On the one hand a
13766 global symbol and on the other a local call
13767 sequence, but don't error for this special case.
13768 It isn't possible to cheaply verify we have
13769 exactly such a call. Allow all calls to the same
13771 asection
*code_sec
= sec
;
13773 if (get_opd_info (sec
) != NULL
)
13775 bfd_vma off
= (relocation
+ addend
13776 - sec
->output_section
->vma
13777 - sec
->output_offset
);
13779 opd_entry_value (sec
, off
, &code_sec
, NULL
, FALSE
);
13781 if (code_sec
== input_section
)
13782 can_plt_call
= TRUE
;
13787 info
->callbacks
->einfo
13788 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13789 "recompile with -fPIC\n"),
13790 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
13792 bfd_set_error (bfd_error_bad_value
);
13797 && (stub_entry
->stub_type
== ppc_stub_plt_call
13798 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
))
13799 unresolved_reloc
= FALSE
;
13802 if ((stub_entry
== NULL
13803 || stub_entry
->stub_type
== ppc_stub_long_branch
13804 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13805 && get_opd_info (sec
) != NULL
)
13807 /* The branch destination is the value of the opd entry. */
13808 bfd_vma off
= (relocation
+ addend
13809 - sec
->output_section
->vma
13810 - sec
->output_offset
);
13811 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
, FALSE
);
13812 if (dest
!= (bfd_vma
) -1)
13816 reloc_dest
= DEST_OPD
;
13820 /* If the branch is out of reach we ought to have a long
13822 from
= (rel
->r_offset
13823 + input_section
->output_offset
13824 + input_section
->output_section
->vma
);
13826 relocation
+= PPC64_LOCAL_ENTRY_OFFSET (fdh
13830 if (stub_entry
!= NULL
13831 && (stub_entry
->stub_type
== ppc_stub_long_branch
13832 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
13833 && (r_type
== R_PPC64_ADDR14_BRTAKEN
13834 || r_type
== R_PPC64_ADDR14_BRNTAKEN
13835 || (relocation
+ addend
- from
+ max_br_offset
13836 < 2 * max_br_offset
)))
13837 /* Don't use the stub if this branch is in range. */
13840 if (stub_entry
!= NULL
)
13842 /* Munge up the value and addend so that we call the stub
13843 rather than the procedure directly. */
13844 relocation
= (stub_entry
->stub_offset
13845 + stub_entry
->stub_sec
->output_offset
13846 + stub_entry
->stub_sec
->output_section
->vma
);
13848 reloc_dest
= DEST_STUB
;
13850 if ((stub_entry
->stub_type
== ppc_stub_plt_call
13851 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13852 && (ALWAYS_EMIT_R2SAVE
13853 || stub_entry
->stub_type
== ppc_stub_plt_call_r2save
)
13854 && rel
+ 1 < relend
13855 && rel
[1].r_offset
== rel
->r_offset
+ 4
13856 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOCSAVE
)
13864 /* Set 'a' bit. This is 0b00010 in BO field for branch
13865 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13866 for branch on CTR insns (BO == 1a00t or 1a01t). */
13867 if ((insn
& (0x14 << 21)) == (0x04 << 21))
13868 insn
|= 0x02 << 21;
13869 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
13870 insn
|= 0x08 << 21;
13876 /* Invert 'y' bit if not the default. */
13877 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
13878 insn
^= 0x01 << 21;
13881 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
13884 /* NOP out calls to undefined weak functions.
13885 We can thus call a weak function without first
13886 checking whether the function is defined. */
13888 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13889 && h
->elf
.dynindx
== -1
13890 && r_type
== R_PPC64_REL24
13894 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
13900 /* Set `addend'. */
13905 info
->callbacks
->einfo
13906 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13907 input_bfd
, (int) r_type
, sym_name
);
13909 bfd_set_error (bfd_error_bad_value
);
13915 case R_PPC64_TLSGD
:
13916 case R_PPC64_TLSLD
:
13917 case R_PPC64_TOCSAVE
:
13918 case R_PPC64_GNU_VTINHERIT
:
13919 case R_PPC64_GNU_VTENTRY
:
13922 /* GOT16 relocations. Like an ADDR16 using the symbol's
13923 address in the GOT as relocation value instead of the
13924 symbol's value itself. Also, create a GOT entry for the
13925 symbol and put the symbol value there. */
13926 case R_PPC64_GOT_TLSGD16
:
13927 case R_PPC64_GOT_TLSGD16_LO
:
13928 case R_PPC64_GOT_TLSGD16_HI
:
13929 case R_PPC64_GOT_TLSGD16_HA
:
13930 tls_type
= TLS_TLS
| TLS_GD
;
13933 case R_PPC64_GOT_TLSLD16
:
13934 case R_PPC64_GOT_TLSLD16_LO
:
13935 case R_PPC64_GOT_TLSLD16_HI
:
13936 case R_PPC64_GOT_TLSLD16_HA
:
13937 tls_type
= TLS_TLS
| TLS_LD
;
13940 case R_PPC64_GOT_TPREL16_DS
:
13941 case R_PPC64_GOT_TPREL16_LO_DS
:
13942 case R_PPC64_GOT_TPREL16_HI
:
13943 case R_PPC64_GOT_TPREL16_HA
:
13944 tls_type
= TLS_TLS
| TLS_TPREL
;
13947 case R_PPC64_GOT_DTPREL16_DS
:
13948 case R_PPC64_GOT_DTPREL16_LO_DS
:
13949 case R_PPC64_GOT_DTPREL16_HI
:
13950 case R_PPC64_GOT_DTPREL16_HA
:
13951 tls_type
= TLS_TLS
| TLS_DTPREL
;
13954 case R_PPC64_GOT16
:
13955 case R_PPC64_GOT16_LO
:
13956 case R_PPC64_GOT16_HI
:
13957 case R_PPC64_GOT16_HA
:
13958 case R_PPC64_GOT16_DS
:
13959 case R_PPC64_GOT16_LO_DS
:
13962 /* Relocation is to the entry for this symbol in the global
13967 unsigned long indx
= 0;
13968 struct got_entry
*ent
;
13970 if (tls_type
== (TLS_TLS
| TLS_LD
)
13972 || !h
->elf
.def_dynamic
))
13973 ent
= ppc64_tlsld_got (input_bfd
);
13979 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
13980 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
13983 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
13984 /* This is actually a static link, or it is a
13985 -Bsymbolic link and the symbol is defined
13986 locally, or the symbol was forced to be local
13987 because of a version file. */
13991 BFD_ASSERT (h
->elf
.dynindx
!= -1);
13992 indx
= h
->elf
.dynindx
;
13993 unresolved_reloc
= FALSE
;
13995 ent
= h
->elf
.got
.glist
;
13999 if (local_got_ents
== NULL
)
14001 ent
= local_got_ents
[r_symndx
];
14004 for (; ent
!= NULL
; ent
= ent
->next
)
14005 if (ent
->addend
== orig_rel
.r_addend
14006 && ent
->owner
== input_bfd
14007 && ent
->tls_type
== tls_type
)
14013 if (ent
->is_indirect
)
14014 ent
= ent
->got
.ent
;
14015 offp
= &ent
->got
.offset
;
14016 got
= ppc64_elf_tdata (ent
->owner
)->got
;
14020 /* The offset must always be a multiple of 8. We use the
14021 least significant bit to record whether we have already
14022 processed this entry. */
14024 if ((off
& 1) != 0)
14028 /* Generate relocs for the dynamic linker, except in
14029 the case of TLSLD where we'll use one entry per
14037 ? h
->elf
.type
== STT_GNU_IFUNC
14038 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
14040 relgot
= htab
->elf
.irelplt
;
14041 else if ((info
->shared
|| indx
!= 0)
14043 || (tls_type
== (TLS_TLS
| TLS_LD
)
14044 && !h
->elf
.def_dynamic
)
14045 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14046 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
14047 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
14048 if (relgot
!= NULL
)
14050 outrel
.r_offset
= (got
->output_section
->vma
14051 + got
->output_offset
14053 outrel
.r_addend
= addend
;
14054 if (tls_type
& (TLS_LD
| TLS_GD
))
14056 outrel
.r_addend
= 0;
14057 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
14058 if (tls_type
== (TLS_TLS
| TLS_GD
))
14060 loc
= relgot
->contents
;
14061 loc
+= (relgot
->reloc_count
++
14062 * sizeof (Elf64_External_Rela
));
14063 bfd_elf64_swap_reloca_out (output_bfd
,
14065 outrel
.r_offset
+= 8;
14066 outrel
.r_addend
= addend
;
14068 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14071 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
14072 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
14073 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14074 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
14075 else if (indx
!= 0)
14076 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
14080 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14082 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14084 /* Write the .got section contents for the sake
14086 loc
= got
->contents
+ off
;
14087 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
14091 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
14093 outrel
.r_addend
+= relocation
;
14094 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
14095 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
14097 loc
= relgot
->contents
;
14098 loc
+= (relgot
->reloc_count
++
14099 * sizeof (Elf64_External_Rela
));
14100 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14103 /* Init the .got section contents here if we're not
14104 emitting a reloc. */
14107 relocation
+= addend
;
14108 if (tls_type
== (TLS_TLS
| TLS_LD
))
14110 else if (tls_type
!= 0)
14112 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14113 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
14114 relocation
+= DTP_OFFSET
- TP_OFFSET
;
14116 if (tls_type
== (TLS_TLS
| TLS_GD
))
14118 bfd_put_64 (output_bfd
, relocation
,
14119 got
->contents
+ off
+ 8);
14124 bfd_put_64 (output_bfd
, relocation
,
14125 got
->contents
+ off
);
14129 if (off
>= (bfd_vma
) -2)
14132 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
14133 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
14137 case R_PPC64_PLT16_HA
:
14138 case R_PPC64_PLT16_HI
:
14139 case R_PPC64_PLT16_LO
:
14140 case R_PPC64_PLT32
:
14141 case R_PPC64_PLT64
:
14142 /* Relocation is to the entry for this symbol in the
14143 procedure linkage table. */
14145 /* Resolve a PLT reloc against a local symbol directly,
14146 without using the procedure linkage table. */
14150 /* It's possible that we didn't make a PLT entry for this
14151 symbol. This happens when statically linking PIC code,
14152 or when using -Bsymbolic. Go find a match if there is a
14154 if (htab
->elf
.splt
!= NULL
)
14156 struct plt_entry
*ent
;
14157 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14158 if (ent
->plt
.offset
!= (bfd_vma
) -1
14159 && ent
->addend
== orig_rel
.r_addend
)
14161 relocation
= (htab
->elf
.splt
->output_section
->vma
14162 + htab
->elf
.splt
->output_offset
14163 + ent
->plt
.offset
);
14164 unresolved_reloc
= FALSE
;
14171 /* Relocation value is TOC base. */
14172 relocation
= TOCstart
;
14173 if (r_symndx
== STN_UNDEF
)
14174 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
14175 else if (unresolved_reloc
)
14177 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
14178 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
14180 unresolved_reloc
= TRUE
;
14183 /* TOC16 relocs. We want the offset relative to the TOC base,
14184 which is the address of the start of the TOC plus 0x8000.
14185 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14187 case R_PPC64_TOC16
:
14188 case R_PPC64_TOC16_LO
:
14189 case R_PPC64_TOC16_HI
:
14190 case R_PPC64_TOC16_DS
:
14191 case R_PPC64_TOC16_LO_DS
:
14192 case R_PPC64_TOC16_HA
:
14193 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
14196 /* Relocate against the beginning of the section. */
14197 case R_PPC64_SECTOFF
:
14198 case R_PPC64_SECTOFF_LO
:
14199 case R_PPC64_SECTOFF_HI
:
14200 case R_PPC64_SECTOFF_DS
:
14201 case R_PPC64_SECTOFF_LO_DS
:
14202 case R_PPC64_SECTOFF_HA
:
14204 addend
-= sec
->output_section
->vma
;
14207 case R_PPC64_REL16
:
14208 case R_PPC64_REL16_LO
:
14209 case R_PPC64_REL16_HI
:
14210 case R_PPC64_REL16_HA
:
14213 case R_PPC64_REL14
:
14214 case R_PPC64_REL14_BRNTAKEN
:
14215 case R_PPC64_REL14_BRTAKEN
:
14216 case R_PPC64_REL24
:
14219 case R_PPC64_TPREL16
:
14220 case R_PPC64_TPREL16_LO
:
14221 case R_PPC64_TPREL16_HI
:
14222 case R_PPC64_TPREL16_HA
:
14223 case R_PPC64_TPREL16_DS
:
14224 case R_PPC64_TPREL16_LO_DS
:
14225 case R_PPC64_TPREL16_HIGH
:
14226 case R_PPC64_TPREL16_HIGHA
:
14227 case R_PPC64_TPREL16_HIGHER
:
14228 case R_PPC64_TPREL16_HIGHERA
:
14229 case R_PPC64_TPREL16_HIGHEST
:
14230 case R_PPC64_TPREL16_HIGHESTA
:
14232 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14233 && h
->elf
.dynindx
== -1)
14235 /* Make this relocation against an undefined weak symbol
14236 resolve to zero. This is really just a tweak, since
14237 code using weak externs ought to check that they are
14238 defined before using them. */
14239 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
14241 insn
= bfd_get_32 (output_bfd
, p
);
14242 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
14244 bfd_put_32 (output_bfd
, insn
, p
);
14247 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14249 /* The TPREL16 relocs shouldn't really be used in shared
14250 libs as they will result in DT_TEXTREL being set, but
14251 support them anyway. */
14255 case R_PPC64_DTPREL16
:
14256 case R_PPC64_DTPREL16_LO
:
14257 case R_PPC64_DTPREL16_HI
:
14258 case R_PPC64_DTPREL16_HA
:
14259 case R_PPC64_DTPREL16_DS
:
14260 case R_PPC64_DTPREL16_LO_DS
:
14261 case R_PPC64_DTPREL16_HIGH
:
14262 case R_PPC64_DTPREL16_HIGHA
:
14263 case R_PPC64_DTPREL16_HIGHER
:
14264 case R_PPC64_DTPREL16_HIGHERA
:
14265 case R_PPC64_DTPREL16_HIGHEST
:
14266 case R_PPC64_DTPREL16_HIGHESTA
:
14267 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14270 case R_PPC64_ADDR64_LOCAL
:
14271 addend
+= PPC64_LOCAL_ENTRY_OFFSET (h
!= NULL
14276 case R_PPC64_DTPMOD64
:
14281 case R_PPC64_TPREL64
:
14282 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
14285 case R_PPC64_DTPREL64
:
14286 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
14289 /* Relocations that may need to be propagated if this is a
14291 case R_PPC64_REL30
:
14292 case R_PPC64_REL32
:
14293 case R_PPC64_REL64
:
14294 case R_PPC64_ADDR14
:
14295 case R_PPC64_ADDR14_BRNTAKEN
:
14296 case R_PPC64_ADDR14_BRTAKEN
:
14297 case R_PPC64_ADDR16
:
14298 case R_PPC64_ADDR16_DS
:
14299 case R_PPC64_ADDR16_HA
:
14300 case R_PPC64_ADDR16_HI
:
14301 case R_PPC64_ADDR16_HIGH
:
14302 case R_PPC64_ADDR16_HIGHA
:
14303 case R_PPC64_ADDR16_HIGHER
:
14304 case R_PPC64_ADDR16_HIGHERA
:
14305 case R_PPC64_ADDR16_HIGHEST
:
14306 case R_PPC64_ADDR16_HIGHESTA
:
14307 case R_PPC64_ADDR16_LO
:
14308 case R_PPC64_ADDR16_LO_DS
:
14309 case R_PPC64_ADDR24
:
14310 case R_PPC64_ADDR32
:
14311 case R_PPC64_ADDR64
:
14312 case R_PPC64_UADDR16
:
14313 case R_PPC64_UADDR32
:
14314 case R_PPC64_UADDR64
:
14316 if ((input_section
->flags
& SEC_ALLOC
) == 0)
14319 if (NO_OPD_RELOCS
&& is_opd
)
14324 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
14325 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
14326 && (must_be_dyn_reloc (info
, r_type
)
14327 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
14328 || (ELIMINATE_COPY_RELOCS
14331 && h
->elf
.dynindx
!= -1
14332 && !h
->elf
.non_got_ref
14333 && !h
->elf
.def_regular
)
14336 ? h
->elf
.type
== STT_GNU_IFUNC
14337 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
14339 bfd_boolean skip
, relocate
;
14343 /* When generating a dynamic object, these relocations
14344 are copied into the output file to be resolved at run
14350 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
14351 input_section
, rel
->r_offset
);
14352 if (out_off
== (bfd_vma
) -1)
14354 else if (out_off
== (bfd_vma
) -2)
14355 skip
= TRUE
, relocate
= TRUE
;
14356 out_off
+= (input_section
->output_section
->vma
14357 + input_section
->output_offset
);
14358 outrel
.r_offset
= out_off
;
14359 outrel
.r_addend
= rel
->r_addend
;
14361 /* Optimize unaligned reloc use. */
14362 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
14363 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
14364 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
14365 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
14366 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
14367 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
14368 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
14369 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
14370 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
14373 memset (&outrel
, 0, sizeof outrel
);
14374 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
14376 && r_type
!= R_PPC64_TOC
)
14378 BFD_ASSERT (h
->elf
.dynindx
!= -1);
14379 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
14383 /* This symbol is local, or marked to become local,
14384 or this is an opd section reloc which must point
14385 at a local function. */
14386 outrel
.r_addend
+= relocation
;
14387 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
14389 if (is_opd
&& h
!= NULL
)
14391 /* Lie about opd entries. This case occurs
14392 when building shared libraries and we
14393 reference a function in another shared
14394 lib. The same thing happens for a weak
14395 definition in an application that's
14396 overridden by a strong definition in a
14397 shared lib. (I believe this is a generic
14398 bug in binutils handling of weak syms.)
14399 In these cases we won't use the opd
14400 entry in this lib. */
14401 unresolved_reloc
= FALSE
;
14404 && r_type
== R_PPC64_ADDR64
14406 ? h
->elf
.type
== STT_GNU_IFUNC
14407 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
14408 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14411 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
14413 /* We need to relocate .opd contents for ld.so.
14414 Prelink also wants simple and consistent rules
14415 for relocs. This make all RELATIVE relocs have
14416 *r_offset equal to r_addend. */
14425 ? h
->elf
.type
== STT_GNU_IFUNC
14426 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14428 info
->callbacks
->einfo
14429 (_("%P: %H: %s for indirect "
14430 "function `%T' unsupported\n"),
14431 input_bfd
, input_section
, rel
->r_offset
,
14432 ppc64_elf_howto_table
[r_type
]->name
,
14436 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
14438 else if (sec
== NULL
|| sec
->owner
== NULL
)
14440 bfd_set_error (bfd_error_bad_value
);
14447 osec
= sec
->output_section
;
14448 indx
= elf_section_data (osec
)->dynindx
;
14452 if ((osec
->flags
& SEC_READONLY
) == 0
14453 && htab
->elf
.data_index_section
!= NULL
)
14454 osec
= htab
->elf
.data_index_section
;
14456 osec
= htab
->elf
.text_index_section
;
14457 indx
= elf_section_data (osec
)->dynindx
;
14459 BFD_ASSERT (indx
!= 0);
14461 /* We are turning this relocation into one
14462 against a section symbol, so subtract out
14463 the output section's address but not the
14464 offset of the input section in the output
14466 outrel
.r_addend
-= osec
->vma
;
14469 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
14473 sreloc
= elf_section_data (input_section
)->sreloc
;
14475 ? h
->elf
.type
== STT_GNU_IFUNC
14476 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
14477 sreloc
= htab
->elf
.irelplt
;
14478 if (sreloc
== NULL
)
14481 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
14484 loc
= sreloc
->contents
;
14485 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14486 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
14488 /* If this reloc is against an external symbol, it will
14489 be computed at runtime, so there's no need to do
14490 anything now. However, for the sake of prelink ensure
14491 that the section contents are a known value. */
14494 unresolved_reloc
= FALSE
;
14495 /* The value chosen here is quite arbitrary as ld.so
14496 ignores section contents except for the special
14497 case of .opd where the contents might be accessed
14498 before relocation. Choose zero, as that won't
14499 cause reloc overflow. */
14502 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14503 to improve backward compatibility with older
14505 if (r_type
== R_PPC64_ADDR64
)
14506 addend
= outrel
.r_addend
;
14507 /* Adjust pc_relative relocs to have zero in *r_offset. */
14508 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
14509 addend
= (input_section
->output_section
->vma
14510 + input_section
->output_offset
14517 case R_PPC64_GLOB_DAT
:
14518 case R_PPC64_JMP_SLOT
:
14519 case R_PPC64_JMP_IREL
:
14520 case R_PPC64_RELATIVE
:
14521 /* We shouldn't ever see these dynamic relocs in relocatable
14523 /* Fall through. */
14525 case R_PPC64_PLTGOT16
:
14526 case R_PPC64_PLTGOT16_DS
:
14527 case R_PPC64_PLTGOT16_HA
:
14528 case R_PPC64_PLTGOT16_HI
:
14529 case R_PPC64_PLTGOT16_LO
:
14530 case R_PPC64_PLTGOT16_LO_DS
:
14531 case R_PPC64_PLTREL32
:
14532 case R_PPC64_PLTREL64
:
14533 /* These ones haven't been implemented yet. */
14535 info
->callbacks
->einfo
14536 (_("%P: %B: %s is not supported for `%T'\n"),
14538 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
14540 bfd_set_error (bfd_error_invalid_operation
);
14545 /* Multi-instruction sequences that access the TOC can be
14546 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14547 to nop; addi rb,r2,x; */
14553 case R_PPC64_GOT_TLSLD16_HI
:
14554 case R_PPC64_GOT_TLSGD16_HI
:
14555 case R_PPC64_GOT_TPREL16_HI
:
14556 case R_PPC64_GOT_DTPREL16_HI
:
14557 case R_PPC64_GOT16_HI
:
14558 case R_PPC64_TOC16_HI
:
14559 /* These relocs would only be useful if building up an
14560 offset to later add to r2, perhaps in an indexed
14561 addressing mode instruction. Don't try to optimize.
14562 Unfortunately, the possibility of someone building up an
14563 offset like this or even with the HA relocs, means that
14564 we need to check the high insn when optimizing the low
14568 case R_PPC64_GOT_TLSLD16_HA
:
14569 case R_PPC64_GOT_TLSGD16_HA
:
14570 case R_PPC64_GOT_TPREL16_HA
:
14571 case R_PPC64_GOT_DTPREL16_HA
:
14572 case R_PPC64_GOT16_HA
:
14573 case R_PPC64_TOC16_HA
:
14574 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14575 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14577 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14578 bfd_put_32 (input_bfd
, NOP
, p
);
14582 case R_PPC64_GOT_TLSLD16_LO
:
14583 case R_PPC64_GOT_TLSGD16_LO
:
14584 case R_PPC64_GOT_TPREL16_LO_DS
:
14585 case R_PPC64_GOT_DTPREL16_LO_DS
:
14586 case R_PPC64_GOT16_LO
:
14587 case R_PPC64_GOT16_LO_DS
:
14588 case R_PPC64_TOC16_LO
:
14589 case R_PPC64_TOC16_LO_DS
:
14590 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000
14591 && !ppc64_elf_tdata (input_bfd
)->unexpected_toc_insn
)
14593 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
14594 insn
= bfd_get_32 (input_bfd
, p
);
14595 if ((insn
& (0x3f << 26)) == 12u << 26 /* addic */)
14597 /* Transform addic to addi when we change reg. */
14598 insn
&= ~((0x3f << 26) | (0x1f << 16));
14599 insn
|= (14u << 26) | (2 << 16);
14603 insn
&= ~(0x1f << 16);
14606 bfd_put_32 (input_bfd
, insn
, p
);
14611 /* Do any further special processing. */
14612 howto
= ppc64_elf_howto_table
[(int) r_type
];
14618 case R_PPC64_REL16_HA
:
14619 case R_PPC64_ADDR16_HA
:
14620 case R_PPC64_ADDR16_HIGHA
:
14621 case R_PPC64_ADDR16_HIGHERA
:
14622 case R_PPC64_ADDR16_HIGHESTA
:
14623 case R_PPC64_TOC16_HA
:
14624 case R_PPC64_SECTOFF_HA
:
14625 case R_PPC64_TPREL16_HA
:
14626 case R_PPC64_TPREL16_HIGHA
:
14627 case R_PPC64_TPREL16_HIGHERA
:
14628 case R_PPC64_TPREL16_HIGHESTA
:
14629 case R_PPC64_DTPREL16_HA
:
14630 case R_PPC64_DTPREL16_HIGHA
:
14631 case R_PPC64_DTPREL16_HIGHERA
:
14632 case R_PPC64_DTPREL16_HIGHESTA
:
14633 /* It's just possible that this symbol is a weak symbol
14634 that's not actually defined anywhere. In that case,
14635 'sec' would be NULL, and we should leave the symbol
14636 alone (it will be set to zero elsewhere in the link). */
14641 case R_PPC64_GOT16_HA
:
14642 case R_PPC64_PLTGOT16_HA
:
14643 case R_PPC64_PLT16_HA
:
14644 case R_PPC64_GOT_TLSGD16_HA
:
14645 case R_PPC64_GOT_TLSLD16_HA
:
14646 case R_PPC64_GOT_TPREL16_HA
:
14647 case R_PPC64_GOT_DTPREL16_HA
:
14648 /* Add 0x10000 if sign bit in 0:15 is set.
14649 Bits 0:15 are not used. */
14653 case R_PPC64_ADDR16_DS
:
14654 case R_PPC64_ADDR16_LO_DS
:
14655 case R_PPC64_GOT16_DS
:
14656 case R_PPC64_GOT16_LO_DS
:
14657 case R_PPC64_PLT16_LO_DS
:
14658 case R_PPC64_SECTOFF_DS
:
14659 case R_PPC64_SECTOFF_LO_DS
:
14660 case R_PPC64_TOC16_DS
:
14661 case R_PPC64_TOC16_LO_DS
:
14662 case R_PPC64_PLTGOT16_DS
:
14663 case R_PPC64_PLTGOT16_LO_DS
:
14664 case R_PPC64_GOT_TPREL16_DS
:
14665 case R_PPC64_GOT_TPREL16_LO_DS
:
14666 case R_PPC64_GOT_DTPREL16_DS
:
14667 case R_PPC64_GOT_DTPREL16_LO_DS
:
14668 case R_PPC64_TPREL16_DS
:
14669 case R_PPC64_TPREL16_LO_DS
:
14670 case R_PPC64_DTPREL16_DS
:
14671 case R_PPC64_DTPREL16_LO_DS
:
14672 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14674 /* If this reloc is against an lq insn, then the value must be
14675 a multiple of 16. This is somewhat of a hack, but the
14676 "correct" way to do this by defining _DQ forms of all the
14677 _DS relocs bloats all reloc switches in this file. It
14678 doesn't seem to make much sense to use any of these relocs
14679 in data, so testing the insn should be safe. */
14680 if ((insn
& (0x3f << 26)) == (56u << 26))
14682 if (((relocation
+ addend
) & mask
) != 0)
14684 info
->callbacks
->einfo
14685 (_("%P: %H: error: %s not a multiple of %u\n"),
14686 input_bfd
, input_section
, rel
->r_offset
,
14689 bfd_set_error (bfd_error_bad_value
);
14696 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14697 because such sections are not SEC_ALLOC and thus ld.so will
14698 not process them. */
14699 if (unresolved_reloc
14700 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
14701 && h
->elf
.def_dynamic
)
14702 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
14703 rel
->r_offset
) != (bfd_vma
) -1)
14705 info
->callbacks
->einfo
14706 (_("%P: %H: unresolvable %s against `%T'\n"),
14707 input_bfd
, input_section
, rel
->r_offset
,
14709 h
->elf
.root
.root
.string
);
14713 /* 16-bit fields in insns mostly have signed values, but a
14714 few insns have 16-bit unsigned values. Really, we should
14715 have different reloc types. */
14716 if (howto
->complain_on_overflow
!= complain_overflow_dont
14717 && howto
->dst_mask
== 0xffff
14718 && (input_section
->flags
& SEC_CODE
) != 0)
14720 enum complain_overflow complain
= complain_overflow_signed
;
14722 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
14723 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
14724 complain
= complain_overflow_bitfield
;
14725 else if (howto
->rightshift
== 0
14726 ? ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
14727 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
14728 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
14729 : ((insn
& (0x3f << 26)) == 29u << 26 /* andis */
14730 || (insn
& (0x3f << 26)) == 25u << 26 /* oris */
14731 || (insn
& (0x3f << 26)) == 27u << 26 /* xoris */))
14732 complain
= complain_overflow_unsigned
;
14733 if (howto
->complain_on_overflow
!= complain
)
14735 alt_howto
= *howto
;
14736 alt_howto
.complain_on_overflow
= complain
;
14737 howto
= &alt_howto
;
14741 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
14742 rel
->r_offset
, relocation
, addend
);
14744 if (r
!= bfd_reloc_ok
)
14746 char *more_info
= NULL
;
14747 const char *reloc_name
= howto
->name
;
14749 if (reloc_dest
!= DEST_NORMAL
)
14751 more_info
= bfd_malloc (strlen (reloc_name
) + 8);
14752 if (more_info
!= NULL
)
14754 strcpy (more_info
, reloc_name
);
14755 strcat (more_info
, (reloc_dest
== DEST_OPD
14756 ? " (OPD)" : " (stub)"));
14757 reloc_name
= more_info
;
14761 if (r
== bfd_reloc_overflow
)
14766 && h
->elf
.root
.type
== bfd_link_hash_undefweak
14767 && howto
->pc_relative
)
14769 /* Assume this is a call protected by other code that
14770 detects the symbol is undefined. If this is the case,
14771 we can safely ignore the overflow. If not, the
14772 program is hosed anyway, and a little warning isn't
14778 if (!((*info
->callbacks
->reloc_overflow
)
14779 (info
, &h
->elf
.root
, sym_name
,
14780 reloc_name
, orig_rel
.r_addend
,
14781 input_bfd
, input_section
, rel
->r_offset
)))
14786 info
->callbacks
->einfo
14787 (_("%P: %H: %s against `%T': error %d\n"),
14788 input_bfd
, input_section
, rel
->r_offset
,
14789 reloc_name
, sym_name
, (int) r
);
14792 if (more_info
!= NULL
)
14797 /* If we're emitting relocations, then shortly after this function
14798 returns, reloc offsets and addends for this section will be
14799 adjusted. Worse, reloc symbol indices will be for the output
14800 file rather than the input. Save a copy of the relocs for
14801 opd_entry_value. */
14802 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
14805 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
14806 rel
= bfd_alloc (input_bfd
, amt
);
14807 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd
.relocs
== NULL
);
14808 ppc64_elf_tdata (input_bfd
)->opd
.relocs
= rel
;
14811 memcpy (rel
, relocs
, amt
);
14816 /* Adjust the value of any local symbols in opd sections. */
14819 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
14820 const char *name ATTRIBUTE_UNUSED
,
14821 Elf_Internal_Sym
*elfsym
,
14822 asection
*input_sec
,
14823 struct elf_link_hash_entry
*h
)
14825 struct _opd_sec_data
*opd
;
14832 opd
= get_opd_info (input_sec
);
14833 if (opd
== NULL
|| opd
->adjust
== NULL
)
14836 value
= elfsym
->st_value
- input_sec
->output_offset
;
14837 if (!info
->relocatable
)
14838 value
-= input_sec
->output_section
->vma
;
14840 adjust
= opd
->adjust
[value
/ 8];
14844 elfsym
->st_value
+= adjust
;
14848 /* Finish up dynamic symbol handling. We set the contents of various
14849 dynamic sections here. */
14852 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
14853 struct bfd_link_info
*info
,
14854 struct elf_link_hash_entry
*h
,
14855 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
14857 struct ppc_link_hash_table
*htab
;
14858 struct plt_entry
*ent
;
14859 Elf_Internal_Rela rela
;
14862 htab
= ppc_hash_table (info
);
14866 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
14867 if (ent
->plt
.offset
!= (bfd_vma
) -1)
14869 /* This symbol has an entry in the procedure linkage
14870 table. Set it up. */
14871 if (!htab
->elf
.dynamic_sections_created
14872 || h
->dynindx
== -1)
14874 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
14876 && (h
->root
.type
== bfd_link_hash_defined
14877 || h
->root
.type
== bfd_link_hash_defweak
));
14878 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
14879 + htab
->elf
.iplt
->output_offset
14880 + ent
->plt
.offset
);
14882 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
14884 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
14885 rela
.r_addend
= (h
->root
.u
.def
.value
14886 + h
->root
.u
.def
.section
->output_offset
14887 + h
->root
.u
.def
.section
->output_section
->vma
14889 loc
= (htab
->elf
.irelplt
->contents
14890 + (htab
->elf
.irelplt
->reloc_count
++
14891 * sizeof (Elf64_External_Rela
)));
14895 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
14896 + htab
->elf
.splt
->output_offset
14897 + ent
->plt
.offset
);
14898 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
14899 rela
.r_addend
= ent
->addend
;
14900 loc
= (htab
->elf
.srelplt
->contents
14901 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE (htab
))
14902 / PLT_ENTRY_SIZE (htab
) * sizeof (Elf64_External_Rela
)));
14904 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14906 if (!htab
->opd_abi
)
14908 if (!h
->def_regular
)
14910 /* Mark the symbol as undefined, rather than as
14911 defined in glink. Leave the value if there were
14912 any relocations where pointer equality matters
14913 (this is a clue for the dynamic linker, to make
14914 function pointer comparisons work between an
14915 application and shared library), otherwise set it
14917 sym
->st_shndx
= SHN_UNDEF
;
14918 if (!h
->pointer_equality_needed
)
14920 else if (!h
->ref_regular_nonweak
)
14922 /* This breaks function pointer comparisons, but
14923 that is better than breaking tests for a NULL
14924 function pointer. */
14933 /* This symbol needs a copy reloc. Set it up. */
14935 if (h
->dynindx
== -1
14936 || (h
->root
.type
!= bfd_link_hash_defined
14937 && h
->root
.type
!= bfd_link_hash_defweak
)
14938 || htab
->relbss
== NULL
)
14941 rela
.r_offset
= (h
->root
.u
.def
.value
14942 + h
->root
.u
.def
.section
->output_section
->vma
14943 + h
->root
.u
.def
.section
->output_offset
);
14944 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
14946 loc
= htab
->relbss
->contents
;
14947 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
14948 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
14954 /* Used to decide how to sort relocs in an optimal manner for the
14955 dynamic linker, before writing them out. */
14957 static enum elf_reloc_type_class
14958 ppc64_elf_reloc_type_class (const struct bfd_link_info
*info
,
14959 const asection
*rel_sec
,
14960 const Elf_Internal_Rela
*rela
)
14962 enum elf_ppc64_reloc_type r_type
;
14963 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
14965 if (rel_sec
== htab
->elf
.irelplt
)
14966 return reloc_class_ifunc
;
14968 r_type
= ELF64_R_TYPE (rela
->r_info
);
14971 case R_PPC64_RELATIVE
:
14972 return reloc_class_relative
;
14973 case R_PPC64_JMP_SLOT
:
14974 return reloc_class_plt
;
14976 return reloc_class_copy
;
14978 return reloc_class_normal
;
14982 /* Finish up the dynamic sections. */
14985 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
14986 struct bfd_link_info
*info
)
14988 struct ppc_link_hash_table
*htab
;
14992 htab
= ppc_hash_table (info
);
14996 dynobj
= htab
->elf
.dynobj
;
14997 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
14999 if (htab
->elf
.dynamic_sections_created
)
15001 Elf64_External_Dyn
*dyncon
, *dynconend
;
15003 if (sdyn
== NULL
|| htab
->elf
.sgot
== NULL
)
15006 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
15007 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
15008 for (; dyncon
< dynconend
; dyncon
++)
15010 Elf_Internal_Dyn dyn
;
15013 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
15020 case DT_PPC64_GLINK
:
15022 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15023 /* We stupidly defined DT_PPC64_GLINK to be the start
15024 of glink rather than the first entry point, which is
15025 what ld.so needs, and now have a bigger stub to
15026 support automatic multiple TOCs. */
15027 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 8 * 4;
15031 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15034 dyn
.d_un
.d_ptr
= s
->vma
;
15038 if (htab
->do_multi_toc
&& htab
->multi_toc_needed
)
15039 dyn
.d_un
.d_val
|= PPC64_OPT_MULTI_TOC
;
15042 case DT_PPC64_OPDSZ
:
15043 s
= bfd_get_section_by_name (output_bfd
, ".opd");
15046 dyn
.d_un
.d_val
= s
->size
;
15050 s
= htab
->elf
.splt
;
15051 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15055 s
= htab
->elf
.srelplt
;
15056 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
15060 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
15064 /* Don't count procedure linkage table relocs in the
15065 overall reloc count. */
15066 s
= htab
->elf
.srelplt
;
15069 dyn
.d_un
.d_val
-= s
->size
;
15073 /* We may not be using the standard ELF linker script.
15074 If .rela.plt is the first .rela section, we adjust
15075 DT_RELA to not include it. */
15076 s
= htab
->elf
.srelplt
;
15079 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
15081 dyn
.d_un
.d_ptr
+= s
->size
;
15085 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
15089 if (htab
->elf
.sgot
!= NULL
&& htab
->elf
.sgot
->size
!= 0)
15091 /* Fill in the first entry in the global offset table.
15092 We use it to hold the link-time TOCbase. */
15093 bfd_put_64 (output_bfd
,
15094 elf_gp (output_bfd
) + TOC_BASE_OFF
,
15095 htab
->elf
.sgot
->contents
);
15097 /* Set .got entry size. */
15098 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 8;
15101 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
15103 /* Set .plt entry size. */
15104 elf_section_data (htab
->elf
.splt
->output_section
)->this_hdr
.sh_entsize
15105 = PLT_ENTRY_SIZE (htab
);
15108 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15109 brlt ourselves if emitrelocations. */
15110 if (htab
->brlt
!= NULL
15111 && htab
->brlt
->reloc_count
!= 0
15112 && !_bfd_elf_link_output_relocs (output_bfd
,
15114 elf_section_data (htab
->brlt
)->rela
.hdr
,
15115 elf_section_data (htab
->brlt
)->relocs
,
15119 if (htab
->glink
!= NULL
15120 && htab
->glink
->reloc_count
!= 0
15121 && !_bfd_elf_link_output_relocs (output_bfd
,
15123 elf_section_data (htab
->glink
)->rela
.hdr
,
15124 elf_section_data (htab
->glink
)->relocs
,
15129 if (htab
->glink_eh_frame
!= NULL
15130 && htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
15131 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
15132 htab
->glink_eh_frame
,
15133 htab
->glink_eh_frame
->contents
))
15136 /* We need to handle writing out multiple GOT sections ourselves,
15137 since we didn't add them to DYNOBJ. We know dynobj is the first
15139 while ((dynobj
= dynobj
->link
.next
) != NULL
)
15143 if (!is_ppc64_elf (dynobj
))
15146 s
= ppc64_elf_tdata (dynobj
)->got
;
15149 && s
->output_section
!= bfd_abs_section_ptr
15150 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15151 s
->contents
, s
->output_offset
,
15154 s
= ppc64_elf_tdata (dynobj
)->relgot
;
15157 && s
->output_section
!= bfd_abs_section_ptr
15158 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
15159 s
->contents
, s
->output_offset
,
15167 #include "elf64-target.h"
15169 /* FreeBSD support */
15171 #undef TARGET_LITTLE_SYM
15172 #undef TARGET_LITTLE_NAME
15174 #undef TARGET_BIG_SYM
15175 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15176 #undef TARGET_BIG_NAME
15177 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15180 #define ELF_OSABI ELFOSABI_FREEBSD
15183 #define elf64_bed elf64_powerpc_fbsd_bed
15185 #include "elf64-target.h"