1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
142 /* Offset of tp and dtp pointers from start of TLS block. */
143 #define TP_OFFSET 0x7000
144 #define DTP_OFFSET 0x8000
146 /* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
148 insert an addi to adjust r11. */
149 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
150 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
155 #define BCTR 0x4e800420 /* bctr */
157 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
158 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
161 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
164 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166 #define BNECTR 0x4ca20420 /* bnectr+ */
167 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
169 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
170 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
173 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
175 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
240 abiversion (bfd *abfd)
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
246 set_abiversion (bfd *abfd, int ver)
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
252 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
254 /* Relocation HOWTO's. */
255 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
257 static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
261 3, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE, /* pc_relative */
265 complain_overflow_dont, /* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
268 FALSE, /* partial_inplace */
271 FALSE), /* pcrel_offset */
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
283 FALSE, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 FALSE), /* pcrel_offset */
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE, /* pc_relative */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
299 FALSE, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 FALSE), /* pcrel_offset */
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
314 FALSE, /* partial_inplace */
316 0xffff, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 ppc64_elf_ha_reloc, /* special_function */
359 "R_PPC64_ADDR16_HA", /* name */
360 FALSE, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_signed, /* complain_on_overflow */
374 ppc64_elf_branch_reloc, /* special_function */
375 "R_PPC64_ADDR14", /* name */
376 FALSE, /* partial_inplace */
378 0x0000fffc, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE, /* pc_relative */
390 complain_overflow_signed, /* complain_on_overflow */
391 ppc64_elf_brtaken_reloc, /* special_function */
392 "R_PPC64_ADDR14_BRTAKEN",/* name */
393 FALSE, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc, /* special_function */
409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
410 FALSE, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 TRUE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_branch_reloc, /* special_function */
424 "R_PPC64_REL24", /* name */
425 FALSE, /* partial_inplace */
427 0x03fffffc, /* dst_mask */
428 TRUE), /* pcrel_offset */
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL14", /* name */
440 FALSE, /* partial_inplace */
442 0x0000fffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE, /* pc_relative */
454 complain_overflow_signed, /* complain_on_overflow */
455 ppc64_elf_brtaken_reloc, /* special_function */
456 "R_PPC64_REL14_BRTAKEN", /* name */
457 FALSE, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc, /* special_function */
473 "R_PPC64_REL14_BRNTAKEN",/* name */
474 FALSE, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
481 HOWTO (R_PPC64_GOT16, /* type */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE, /* pc_relative */
487 complain_overflow_signed, /* complain_on_overflow */
488 ppc64_elf_unhandled_reloc, /* special_function */
489 "R_PPC64_GOT16", /* name */
490 FALSE, /* partial_inplace */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
497 HOWTO (R_PPC64_GOT16_LO, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE, /* pc_relative */
503 complain_overflow_dont, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc, /* special_function */
505 "R_PPC64_GOT16_LO", /* name */
506 FALSE, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_HI, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE, /* pc_relative */
519 complain_overflow_signed,/* complain_on_overflow */
520 ppc64_elf_unhandled_reloc, /* special_function */
521 "R_PPC64_GOT16_HI", /* name */
522 FALSE, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HA, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE, /* pc_relative */
535 complain_overflow_signed,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc, /* special_function */
537 "R_PPC64_GOT16_HA", /* name */
538 FALSE, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE), /* pcrel_offset */
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
550 0, /* this one is variable size */
552 FALSE, /* pc_relative */
554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
556 "R_PPC64_COPY", /* name */
557 FALSE, /* partial_inplace */
560 FALSE), /* pcrel_offset */
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
568 FALSE, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc, /* special_function */
572 "R_PPC64_GLOB_DAT", /* name */
573 FALSE, /* partial_inplace */
575 ONES (64), /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE, /* pc_relative */
586 complain_overflow_dont, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc, /* special_function */
588 "R_PPC64_JMP_SLOT", /* name */
589 FALSE, /* partial_inplace */
592 FALSE), /* pcrel_offset */
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
597 HOWTO (R_PPC64_RELATIVE, /* type */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
601 FALSE, /* pc_relative */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
606 FALSE, /* partial_inplace */
608 ONES (64), /* dst_mask */
609 FALSE), /* pcrel_offset */
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE, /* pc_relative */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
621 FALSE, /* partial_inplace */
623 0xffffffff, /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
636 FALSE, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE, /* pc_relative */
648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
651 FALSE, /* partial_inplace */
653 0xffffffff, /* dst_mask */
654 TRUE), /* pcrel_offset */
656 /* 32-bit relocation to the symbol's procedure linkage table. */
657 HOWTO (R_PPC64_PLT32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE, /* pc_relative */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 ppc64_elf_unhandled_reloc, /* special_function */
665 "R_PPC64_PLT32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 FALSE), /* pcrel_offset */
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 TRUE, /* pc_relative */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
682 FALSE, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 TRUE), /* pcrel_offset */
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
689 HOWTO (R_PPC64_PLT16_LO, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_dont, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc, /* special_function */
697 "R_PPC64_PLT16_LO", /* name */
698 FALSE, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_HI, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_signed, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc, /* special_function */
713 "R_PPC64_PLT16_HI", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HA, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE, /* pc_relative */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc, /* special_function */
729 "R_PPC64_PLT16_HA", /* name */
730 FALSE, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
735 /* 16-bit section relative relocation. */
736 HOWTO (R_PPC64_SECTOFF, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_sectoff_reloc, /* special_function */
744 "R_PPC64_SECTOFF", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF_LO", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_signed, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_HI", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_ha_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HA", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 "R_PPC64_REL30", /* name */
805 FALSE, /* partial_inplace */
807 0xfffffffc, /* dst_mask */
808 TRUE), /* pcrel_offset */
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 FALSE, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
822 FALSE, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 FALSE), /* pcrel_offset */
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
837 FALSE, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE, /* pc_relative */
850 complain_overflow_dont, /* complain_on_overflow */
851 ppc64_elf_ha_reloc, /* special_function */
852 "R_PPC64_ADDR16_HIGHERA", /* name */
853 FALSE, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE, /* pc_relative */
881 complain_overflow_dont, /* complain_on_overflow */
882 ppc64_elf_ha_reloc, /* special_function */
883 "R_PPC64_ADDR16_HIGHESTA", /* name */
884 FALSE, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
899 FALSE, /* partial_inplace */
901 ONES (64), /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 TRUE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 TRUE), /* pcrel_offset */
919 /* 64-bit relocation to the symbol's procedure linkage table. */
920 HOWTO (R_PPC64_PLT64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 FALSE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc64_elf_unhandled_reloc, /* special_function */
928 "R_PPC64_PLT64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 FALSE), /* pcrel_offset */
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 TRUE, /* pc_relative */
943 complain_overflow_dont, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc, /* special_function */
945 "R_PPC64_PLTREL64", /* name */
946 FALSE, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 TRUE), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation. */
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_signed, /* complain_on_overflow */
961 ppc64_elf_toc_reloc, /* special_function */
962 "R_PPC64_TOC16", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation without overflow. */
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc64_elf_toc_reloc, /* special_function */
979 "R_PPC64_TOC16_LO", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation, high 16 bits. */
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc64_elf_toc_reloc, /* special_function */
996 "R_PPC64_TOC16_HI", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE, /* pc_relative */
1013 complain_overflow_signed, /* complain_on_overflow */
1014 ppc64_elf_toc_ha_reloc, /* special_function */
1015 "R_PPC64_TOC16_HA", /* name */
1016 FALSE, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE), /* pcrel_offset */
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_toc64_reloc, /* special_function */
1032 "R_PPC64_TOC", /* name */
1033 FALSE, /* partial_inplace */
1035 ONES (64), /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_signed, /* complain_on_overflow */
1054 ppc64_elf_unhandled_reloc, /* special_function */
1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE, /* pc_relative */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE, /* pc_relative */
1085 complain_overflow_signed, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE, /* pc_relative */
1103 complain_overflow_signed, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_signed, /* complain_on_overflow */
1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE, /* pc_relative */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE, /* pc_relative */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1278 /* Marker relocs for TLS. */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TLSGD,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSLD,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1319 FALSE), /* pcrel_offset */
1321 HOWTO (R_PPC64_TOCSAVE,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE, /* pc_relative */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1333 FALSE), /* pcrel_offset */
1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE, /* pc_relative */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE, /* pc_relative */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_signed, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE, /* pc_relative */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_signed, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE, /* pc_relative */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
1696 FALSE, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE), /* pcrel_offset */
1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_dont, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_signed, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE, /* pc_relative */
1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
1758 FALSE, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE, /* pc_relative */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc, /* special_function */
1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
1819 FALSE, /* partial_inplace */
1821 0xfffc, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_signed, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
1849 FALSE, /* partial_inplace */
1851 0xffff, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE, /* pc_relative */
1877 complain_overflow_signed, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
1880 FALSE, /* partial_inplace */
1882 0xfffc, /* dst_mask */
1883 FALSE), /* pcrel_offset */
1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_dont, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_signed, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_HI", /* name */
1910 FALSE, /* partial_inplace */
1912 0xffff, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HA", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1934 FALSE, /* pc_relative */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1942 FALSE), /* pcrel_offset */
1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE, /* pc_relative */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1963 TRUE, /* pc_relative */
1965 complain_overflow_signed, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_signed, /* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE, /* pc_relative */
2011 complain_overflow_signed, /* complain_on_overflow */
2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE, /* pc_relative */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2039 FALSE, /* pc_relative */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
2134 FALSE, /* partial_inplace */
2137 FALSE), /* pcrel_offset */
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
2149 FALSE, /* partial_inplace */
2152 FALSE), /* pcrel_offset */
2156 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2160 ppc_howto_init (void)
2162 unsigned int i, type;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2175 static reloc_howto_type *
2176 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2420 return ppc64_elf_howto_table[r];
2423 static reloc_howto_type *
2424 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2439 /* Set the howto pointer for a PowerPC ELF reloc. */
2442 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
2447 /* Initialize howto table if needed. */
2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2451 type = ELF64_R_TYPE (dst->r_info);
2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2457 type = R_PPC64_NONE;
2459 cache_ptr->howto = ppc64_elf_howto_table[type];
2462 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2464 static bfd_reloc_status_type
2465 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2472 if (output_bfd != NULL)
2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2474 input_section, output_bfd, error_message);
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2483 static bfd_reloc_status_type
2484 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2516 if (strcmp (symdef->name, symbol->name) == 0)
2518 elfsym = (elf_symbol_type *) symdef;
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2526 return bfd_reloc_continue;
2529 static bfd_reloc_status_type
2530 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
2535 enum elf_ppc64_reloc_type r_type;
2536 bfd_size_type octets;
2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2543 if (output_bfd != NULL)
2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2545 input_section, output_bfd, error_message);
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
2550 r_type = reloc_entry->howto->type;
2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
2592 static bfd_reloc_status_type
2593 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2600 if (output_bfd != NULL)
2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2602 input_section, output_bfd, error_message);
2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
2606 return bfd_reloc_continue;
2609 static bfd_reloc_status_type
2610 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2617 if (output_bfd != NULL)
2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2619 input_section, output_bfd, error_message);
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2629 static bfd_reloc_status_type
2630 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd != NULL)
2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2641 input_section, output_bfd, error_message);
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2652 static bfd_reloc_status_type
2653 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2662 if (output_bfd != NULL)
2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2664 input_section, output_bfd, error_message);
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2678 static bfd_reloc_status_type
2679 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
2684 bfd_size_type octets;
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2702 static bfd_reloc_status_type
2703 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd != NULL)
2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2712 input_section, output_bfd, error_message);
2714 if (error_message != NULL)
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2721 return bfd_reloc_dangerous;
2724 /* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2728 struct got_entry *next;
2730 /* The symbol addend that we'll be placing in the GOT. */
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2739 Point to the BFD owning this GOT entry. */
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
2744 unsigned char tls_type;
2746 /* Non-zero if got.ent points to real entry. */
2747 unsigned char is_indirect;
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 bfd_signed_vma refcount;
2754 struct got_entry *ent;
2758 /* The same for PLT. */
2761 struct plt_entry *next;
2767 bfd_signed_vma refcount;
2772 struct ppc64_elf_obj_tdata
2774 struct elf_obj_tdata elf;
2776 /* Shortcuts to dynamic linker sections. */
2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
2784 /* TLS local dynamic got entry handling. Support for multiple GOT
2785 sections means we potentially need one of these for each input bfd. */
2786 struct got_entry tlsld_got;
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2792 /* Section contents. */
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
2798 unsigned int has_small_toc_reloc : 1;
2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
2805 #define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2808 #define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2811 #define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
2815 /* Override the generic function because we store some extras. */
2818 ppc64_elf_mkobject (bfd *abfd)
2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2824 /* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2828 ppc64_elf_object_p (bfd *abfd)
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2844 /* Support for core dump NOTE sections. */
2847 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2849 size_t offset, size;
2851 if (note->descsz != 504)
2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2866 size, note->descpos + offset);
2870 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2872 if (note->descsz != 136)
2875 elf_tdata (abfd)->core->pid
2876 = bfd_get_32 (abfd, note->descdata + 24);
2877 elf_tdata (abfd)->core->program
2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2879 elf_tdata (abfd)->core->command
2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2886 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2899 va_start (ap, note_type);
2900 memset (data, 0, sizeof (data));
2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2932 /* Add extra PPC sections. */
2934 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
2945 enum _ppc64_sec_type {
2951 struct _ppc64_elf_section_data
2953 struct bfd_elf_section_data elf;
2957 /* An array with one entry for each opd function descriptor,
2958 and some spares since opd entries may be either 16 or 24 bytes. */
2959 #define OPD_NDX(OFF) ((OFF) >> 4)
2960 struct _opd_sec_data
2962 /* Points to the function code section for local opd entries. */
2963 asection **func_sec;
2965 /* After editing .opd, adjust references to opd local syms. */
2969 /* An array for toc sections, indexed by offset/8. */
2970 struct _toc_sec_data
2972 /* Specifies the relocation symbol index used at a given toc offset. */
2975 /* And the relocation addend. */
2980 enum _ppc64_sec_type sec_type:2;
2982 /* Flag set when small branches are detected. Used to
2983 select suitable defaults for the stub group size. */
2984 unsigned int has_14bit_branch:1;
2987 #define ppc64_elf_section_data(sec) \
2988 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2991 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2993 if (!sec->used_by_bfd)
2995 struct _ppc64_elf_section_data *sdata;
2996 bfd_size_type amt = sizeof (*sdata);
2998 sdata = bfd_zalloc (abfd, amt);
3001 sec->used_by_bfd = sdata;
3004 return _bfd_elf_new_section_hook (abfd, sec);
3007 static struct _opd_sec_data *
3008 get_opd_info (asection * sec)
3011 && ppc64_elf_section_data (sec) != NULL
3012 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3013 return &ppc64_elf_section_data (sec)->u.opd;
3017 /* Parameters for the qsort hook. */
3018 static bfd_boolean synthetic_relocatable;
3020 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3023 compare_symbols (const void *ap, const void *bp)
3025 const asymbol *a = * (const asymbol **) ap;
3026 const asymbol *b = * (const asymbol **) bp;
3028 /* Section symbols first. */
3029 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3031 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3034 /* then .opd symbols. */
3035 if (strcmp (a->section->name, ".opd") == 0
3036 && strcmp (b->section->name, ".opd") != 0)
3038 if (strcmp (a->section->name, ".opd") != 0
3039 && strcmp (b->section->name, ".opd") == 0)
3042 /* then other code symbols. */
3043 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 == (SEC_CODE | SEC_ALLOC)
3045 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3046 != (SEC_CODE | SEC_ALLOC))
3049 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC)
3051 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3052 == (SEC_CODE | SEC_ALLOC))
3055 if (synthetic_relocatable)
3057 if (a->section->id < b->section->id)
3060 if (a->section->id > b->section->id)
3064 if (a->value + a->section->vma < b->value + b->section->vma)
3067 if (a->value + a->section->vma > b->value + b->section->vma)
3070 /* For syms with the same value, prefer strong dynamic global function
3071 syms over other syms. */
3072 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3075 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3078 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3081 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3084 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3087 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3090 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3093 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3099 /* Search SYMS for a symbol of the given VALUE. */
3102 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3110 mid = (lo + hi) >> 1;
3111 if (syms[mid]->value + syms[mid]->section->vma < value)
3113 else if (syms[mid]->value + syms[mid]->section->vma > value)
3123 mid = (lo + hi) >> 1;
3124 if (syms[mid]->section->id < id)
3126 else if (syms[mid]->section->id > id)
3128 else if (syms[mid]->value < value)
3130 else if (syms[mid]->value > value)
3140 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3142 bfd_vma vma = *(bfd_vma *) ptr;
3143 return ((section->flags & SEC_ALLOC) != 0
3144 && section->vma <= vma
3145 && vma < section->vma + section->size);
3148 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3149 entry syms. Also generate @plt symbols for the glink branch table. */
3152 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3153 long static_count, asymbol **static_syms,
3154 long dyn_count, asymbol **dyn_syms,
3161 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3162 asection *opd = NULL;
3163 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3165 int abi = abiversion (abfd);
3171 opd = bfd_get_section_by_name (abfd, ".opd");
3172 if (opd == NULL && abi == 1)
3176 symcount = static_count;
3178 symcount += dyn_count;
3182 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3186 if (!relocatable && static_count != 0 && dyn_count != 0)
3188 /* Use both symbol tables. */
3189 memcpy (syms, static_syms, static_count * sizeof (*syms));
3190 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3192 else if (!relocatable && static_count == 0)
3193 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3195 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3197 synthetic_relocatable = relocatable;
3198 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3200 if (!relocatable && symcount > 1)
3203 /* Trim duplicate syms, since we may have merged the normal and
3204 dynamic symbols. Actually, we only care about syms that have
3205 different values, so trim any with the same value. */
3206 for (i = 1, j = 1; i < symcount; ++i)
3207 if (syms[i - 1]->value + syms[i - 1]->section->vma
3208 != syms[i]->value + syms[i]->section->vma)
3209 syms[j++] = syms[i];
3214 if (strcmp (syms[i]->section->name, ".opd") == 0)
3218 for (; i < symcount; ++i)
3219 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3220 != (SEC_CODE | SEC_ALLOC))
3221 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 for (; i < symcount; ++i)
3226 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3230 for (; i < symcount; ++i)
3231 if (strcmp (syms[i]->section->name, ".opd") != 0)
3235 for (; i < symcount; ++i)
3236 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3237 != (SEC_CODE | SEC_ALLOC))
3245 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3250 if (opdsymend == secsymend)
3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3254 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3258 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3265 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3269 while (r < opd->relocation + relcount
3270 && r->address < syms[i]->value + opd->vma)
3273 if (r == opd->relocation + relcount)
3276 if (r->address != syms[i]->value + opd->vma)
3279 if (r->howto->type != R_PPC64_ADDR64)
3282 sym = *r->sym_ptr_ptr;
3283 if (!sym_exists_at (syms, opdsymend, symcount,
3284 sym->section->id, sym->value + r->addend))
3287 size += sizeof (asymbol);
3288 size += strlen (syms[i]->name) + 2;
3292 s = *ret = bfd_malloc (size);
3299 names = (char *) (s + count);
3301 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3305 while (r < opd->relocation + relcount
3306 && r->address < syms[i]->value + opd->vma)
3309 if (r == opd->relocation + relcount)
3312 if (r->address != syms[i]->value + opd->vma)
3315 if (r->howto->type != R_PPC64_ADDR64)
3318 sym = *r->sym_ptr_ptr;
3319 if (!sym_exists_at (syms, opdsymend, symcount,
3320 sym->section->id, sym->value + r->addend))
3325 s->flags |= BSF_SYNTHETIC;
3326 s->section = sym->section;
3327 s->value = sym->value + r->addend;
3330 len = strlen (syms[i]->name);
3331 memcpy (names, syms[i]->name, len + 1);
3333 /* Have udata.p point back to the original symbol this
3334 synthetic symbol was derived from. */
3335 s->udata.p = syms[i];
3342 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3343 bfd_byte *contents = NULL;
3346 bfd_vma glink_vma = 0, resolv_vma = 0;
3347 asection *dynamic, *glink = NULL, *relplt = NULL;
3350 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3352 free_contents_and_exit:
3360 for (i = secsymend; i < opdsymend; ++i)
3364 /* Ignore bogus symbols. */
3365 if (syms[i]->value > opd->size - 8)
3368 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3369 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3372 size += sizeof (asymbol);
3373 size += strlen (syms[i]->name) + 2;
3377 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3379 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3381 bfd_byte *dynbuf, *extdyn, *extdynend;
3383 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3385 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3386 goto free_contents_and_exit;
3388 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3389 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3392 extdynend = extdyn + dynamic->size;
3393 for (; extdyn < extdynend; extdyn += extdynsize)
3395 Elf_Internal_Dyn dyn;
3396 (*swap_dyn_in) (abfd, extdyn, &dyn);
3398 if (dyn.d_tag == DT_NULL)
3401 if (dyn.d_tag == DT_PPC64_GLINK)
3403 /* The first glink stub starts at offset 32; see
3404 comment in ppc64_elf_finish_dynamic_sections. */
3405 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3406 /* The .glink section usually does not survive the final
3407 link; search for the section (usually .text) where the
3408 glink stubs now reside. */
3409 glink = bfd_sections_find_if (abfd, section_covers_vma,
3420 /* Determine __glink trampoline by reading the relative branch
3421 from the first glink stub. */
3423 unsigned int off = 0;
3425 while (bfd_get_section_contents (abfd, glink, buf,
3426 glink_vma + off - glink->vma, 4))
3428 unsigned int insn = bfd_get_32 (abfd, buf);
3430 if ((insn & ~0x3fffffc) == 0)
3432 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3441 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3443 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3446 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3447 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3448 goto free_contents_and_exit;
3450 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3451 size += plt_count * sizeof (asymbol);
3453 p = relplt->relocation;
3454 for (i = 0; i < plt_count; i++, p++)
3456 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3458 size += sizeof ("+0x") - 1 + 16;
3463 s = *ret = bfd_malloc (size);
3465 goto free_contents_and_exit;
3467 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3469 for (i = secsymend; i < opdsymend; ++i)
3473 if (syms[i]->value > opd->size - 8)
3476 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3477 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3481 asection *sec = abfd->sections;
3488 long mid = (lo + hi) >> 1;
3489 if (syms[mid]->section->vma < ent)
3491 else if (syms[mid]->section->vma > ent)
3495 sec = syms[mid]->section;
3500 if (lo >= hi && lo > codesecsym)
3501 sec = syms[lo - 1]->section;
3503 for (; sec != NULL; sec = sec->next)
3507 /* SEC_LOAD may not be set if SEC is from a separate debug
3509 if ((sec->flags & SEC_ALLOC) == 0)
3511 if ((sec->flags & SEC_CODE) != 0)
3514 s->flags |= BSF_SYNTHETIC;
3515 s->value = ent - s->section->vma;
3518 len = strlen (syms[i]->name);
3519 memcpy (names, syms[i]->name, len + 1);
3521 /* Have udata.p point back to the original symbol this
3522 synthetic symbol was derived from. */
3523 s->udata.p = syms[i];
3529 if (glink != NULL && relplt != NULL)
3533 /* Add a symbol for the main glink trampoline. */
3534 memset (s, 0, sizeof *s);
3536 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3538 s->value = resolv_vma - glink->vma;
3540 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3541 names += sizeof ("__glink_PLTresolve");
3546 /* FIXME: It would be very much nicer to put sym@plt on the
3547 stub rather than on the glink branch table entry. The
3548 objdump disassembler would then use a sensible symbol
3549 name on plt calls. The difficulty in doing so is
3550 a) finding the stubs, and,
3551 b) matching stubs against plt entries, and,
3552 c) there can be multiple stubs for a given plt entry.
3554 Solving (a) could be done by code scanning, but older
3555 ppc64 binaries used different stubs to current code.
3556 (b) is the tricky one since you need to known the toc
3557 pointer for at least one function that uses a pic stub to
3558 be able to calculate the plt address referenced.
3559 (c) means gdb would need to set multiple breakpoints (or
3560 find the glink branch itself) when setting breakpoints
3561 for pending shared library loads. */
3562 p = relplt->relocation;
3563 for (i = 0; i < plt_count; i++, p++)
3567 *s = **p->sym_ptr_ptr;
3568 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3569 we are defining a symbol, ensure one of them is set. */
3570 if ((s->flags & BSF_LOCAL) == 0)
3571 s->flags |= BSF_GLOBAL;
3572 s->flags |= BSF_SYNTHETIC;
3574 s->value = glink_vma - glink->vma;
3577 len = strlen ((*p->sym_ptr_ptr)->name);
3578 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3582 memcpy (names, "+0x", sizeof ("+0x") - 1);
3583 names += sizeof ("+0x") - 1;
3584 bfd_sprintf_vma (abfd, names, p->addend);
3585 names += strlen (names);
3587 memcpy (names, "@plt", sizeof ("@plt"));
3588 names += sizeof ("@plt");
3608 /* The following functions are specific to the ELF linker, while
3609 functions above are used generally. Those named ppc64_elf_* are
3610 called by the main ELF linker code. They appear in this file more
3611 or less in the order in which they are called. eg.
3612 ppc64_elf_check_relocs is called early in the link process,
3613 ppc64_elf_finish_dynamic_sections is one of the last functions
3616 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3617 functions have both a function code symbol and a function descriptor
3618 symbol. A call to foo in a relocatable object file looks like:
3625 The function definition in another object file might be:
3629 . .quad .TOC.@tocbase
3635 When the linker resolves the call during a static link, the branch
3636 unsurprisingly just goes to .foo and the .opd information is unused.
3637 If the function definition is in a shared library, things are a little
3638 different: The call goes via a plt call stub, the opd information gets
3639 copied to the plt, and the linker patches the nop.
3647 . std 2,40(1) # in practice, the call stub
3648 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3649 . addi 11,11,Lfoo@toc@l # this is the general idea
3657 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3659 The "reloc ()" notation is supposed to indicate that the linker emits
3660 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3663 What are the difficulties here? Well, firstly, the relocations
3664 examined by the linker in check_relocs are against the function code
3665 sym .foo, while the dynamic relocation in the plt is emitted against
3666 the function descriptor symbol, foo. Somewhere along the line, we need
3667 to carefully copy dynamic link information from one symbol to the other.
3668 Secondly, the generic part of the elf linker will make .foo a dynamic
3669 symbol as is normal for most other backends. We need foo dynamic
3670 instead, at least for an application final link. However, when
3671 creating a shared library containing foo, we need to have both symbols
3672 dynamic so that references to .foo are satisfied during the early
3673 stages of linking. Otherwise the linker might decide to pull in a
3674 definition from some other object, eg. a static library.
3676 Update: As of August 2004, we support a new convention. Function
3677 calls may use the function descriptor symbol, ie. "bl foo". This
3678 behaves exactly as "bl .foo". */
3680 /* Of those relocs that might be copied as dynamic relocs, this function
3681 selects those that must be copied when linking a shared library,
3682 even when the symbol is local. */
3685 must_be_dyn_reloc (struct bfd_link_info *info,
3686 enum elf_ppc64_reloc_type r_type)
3698 case R_PPC64_TPREL16:
3699 case R_PPC64_TPREL16_LO:
3700 case R_PPC64_TPREL16_HI:
3701 case R_PPC64_TPREL16_HA:
3702 case R_PPC64_TPREL16_DS:
3703 case R_PPC64_TPREL16_LO_DS:
3704 case R_PPC64_TPREL16_HIGH:
3705 case R_PPC64_TPREL16_HIGHA:
3706 case R_PPC64_TPREL16_HIGHER:
3707 case R_PPC64_TPREL16_HIGHERA:
3708 case R_PPC64_TPREL16_HIGHEST:
3709 case R_PPC64_TPREL16_HIGHESTA:
3710 case R_PPC64_TPREL64:
3711 return !info->executable;
3715 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3716 copying dynamic variables from a shared lib into an app's dynbss
3717 section, and instead use a dynamic relocation to point into the
3718 shared lib. With code that gcc generates, it's vital that this be
3719 enabled; In the PowerPC64 ABI, the address of a function is actually
3720 the address of a function descriptor, which resides in the .opd
3721 section. gcc uses the descriptor directly rather than going via the
3722 GOT as some other ABI's do, which means that initialized function
3723 pointers must reference the descriptor. Thus, a function pointer
3724 initialized to the address of a function in a shared library will
3725 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3726 redefines the function descriptor symbol to point to the copy. This
3727 presents a problem as a plt entry for that function is also
3728 initialized from the function descriptor symbol and the copy reloc
3729 may not be initialized first. */
3730 #define ELIMINATE_COPY_RELOCS 1
3732 /* Section name for stubs is the associated section name plus this
3734 #define STUB_SUFFIX ".stub"
3737 ppc_stub_long_branch:
3738 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3739 destination, but a 24 bit branch in a stub section will reach.
3742 ppc_stub_plt_branch:
3743 Similar to the above, but a 24 bit branch in the stub section won't
3744 reach its destination.
3745 . addis %r11,%r2,xxx@toc@ha
3746 . ld %r12,xxx@toc@l(%r11)
3751 Used to call a function in a shared library. If it so happens that
3752 the plt entry referenced crosses a 64k boundary, then an extra
3753 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3755 . addis %r11,%r2,xxx@toc@ha
3756 . ld %r12,xxx+0@toc@l(%r11)
3758 . ld %r2,xxx+8@toc@l(%r11)
3759 . ld %r11,xxx+16@toc@l(%r11)
3762 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3763 code to adjust the value and save r2 to support multiple toc sections.
3764 A ppc_stub_long_branch with an r2 offset looks like:
3766 . addis %r2,%r2,off@ha
3767 . addi %r2,%r2,off@l
3770 A ppc_stub_plt_branch with an r2 offset looks like:
3772 . addis %r11,%r2,xxx@toc@ha
3773 . ld %r12,xxx@toc@l(%r11)
3774 . addis %r2,%r2,off@ha
3775 . addi %r2,%r2,off@l
3779 In cases where the "addis" instruction would add zero, the "addis" is
3780 omitted and following instructions modified slightly in some cases.
3783 enum ppc_stub_type {
3785 ppc_stub_long_branch,
3786 ppc_stub_long_branch_r2off,
3787 ppc_stub_plt_branch,
3788 ppc_stub_plt_branch_r2off,
3790 ppc_stub_plt_call_r2save,
3791 ppc_stub_global_entry
3794 struct ppc_stub_hash_entry {
3796 /* Base hash table entry structure. */
3797 struct bfd_hash_entry root;
3799 enum ppc_stub_type stub_type;
3801 /* The stub section. */
3804 /* Offset within stub_sec of the beginning of this stub. */
3805 bfd_vma stub_offset;
3807 /* Given the symbol's value and its section we can determine its final
3808 value when building the stubs (so the stub knows where to jump. */
3809 bfd_vma target_value;
3810 asection *target_section;
3812 /* The symbol table entry, if any, that this was derived from. */
3813 struct ppc_link_hash_entry *h;
3814 struct plt_entry *plt_ent;
3816 /* Where this stub is being called from, or, in the case of combined
3817 stub sections, the first input section in the group. */
3820 /* Symbol st_other. */
3821 unsigned char other;
3824 struct ppc_branch_hash_entry {
3826 /* Base hash table entry structure. */
3827 struct bfd_hash_entry root;
3829 /* Offset within branch lookup table. */
3830 unsigned int offset;
3832 /* Generation marker. */
3836 /* Used to track dynamic relocations for local symbols. */
3837 struct ppc_dyn_relocs
3839 struct ppc_dyn_relocs *next;
3841 /* The input section of the reloc. */
3844 /* Total number of relocs copied for the input section. */
3845 unsigned int count : 31;
3847 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3848 unsigned int ifunc : 1;
3851 struct ppc_link_hash_entry
3853 struct elf_link_hash_entry elf;
3856 /* A pointer to the most recently used stub hash entry against this
3858 struct ppc_stub_hash_entry *stub_cache;
3860 /* A pointer to the next symbol starting with a '.' */
3861 struct ppc_link_hash_entry *next_dot_sym;
3864 /* Track dynamic relocs copied for this symbol. */
3865 struct elf_dyn_relocs *dyn_relocs;
3867 /* Link between function code and descriptor symbols. */
3868 struct ppc_link_hash_entry *oh;
3870 /* Flag function code and descriptor symbols. */
3871 unsigned int is_func:1;
3872 unsigned int is_func_descriptor:1;
3873 unsigned int fake:1;
3875 /* Whether global opd/toc sym has been adjusted or not.
3876 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3877 should be set for all globals defined in any opd/toc section. */
3878 unsigned int adjust_done:1;
3880 /* Set if we twiddled this symbol to weak at some stage. */
3881 unsigned int was_undefined:1;
3883 /* Contexts in which symbol is used in the GOT (or TOC).
3884 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3885 corresponding relocs are encountered during check_relocs.
3886 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3887 indicate the corresponding GOT entry type is not needed.
3888 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3889 a TPREL one. We use a separate flag rather than setting TPREL
3890 just for convenience in distinguishing the two cases. */
3891 #define TLS_GD 1 /* GD reloc. */
3892 #define TLS_LD 2 /* LD reloc. */
3893 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3894 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3895 #define TLS_TLS 16 /* Any TLS reloc. */
3896 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3897 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3898 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3899 unsigned char tls_mask;
3902 /* ppc64 ELF linker hash table. */
3904 struct ppc_link_hash_table
3906 struct elf_link_hash_table elf;
3908 /* The stub hash table. */
3909 struct bfd_hash_table stub_hash_table;
3911 /* Another hash table for plt_branch stubs. */
3912 struct bfd_hash_table branch_hash_table;
3914 /* Hash table for function prologue tocsave. */
3915 htab_t tocsave_htab;
3917 /* Various options and other info passed from the linker. */
3918 struct ppc64_elf_params *params;
3920 /* Array to keep track of which stub sections have been created, and
3921 information on stub grouping. */
3923 /* This is the section to which stubs in the group will be attached. */
3925 /* The stub section. */
3927 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3931 /* Temp used when calculating TOC pointers. */
3934 asection *toc_first_sec;
3936 /* Highest input section id. */
3939 /* Highest output section index. */
3942 /* Used when adding symbols. */
3943 struct ppc_link_hash_entry *dot_syms;
3945 /* List of input sections for each output section. */
3946 asection **input_list;
3948 /* Shortcuts to get to dynamic linker sections. */
3955 asection *glink_eh_frame;
3957 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3958 struct ppc_link_hash_entry *tls_get_addr;
3959 struct ppc_link_hash_entry *tls_get_addr_fd;
3961 /* The size of reliplt used by got entry relocs. */
3962 bfd_size_type got_reli_size;
3965 unsigned long stub_count[ppc_stub_global_entry];
3967 /* Number of stubs against global syms. */
3968 unsigned long stub_globals;
3970 /* Set if we're linking code with function descriptors. */
3971 unsigned int opd_abi:1;
3973 /* Support for multiple toc sections. */
3974 unsigned int do_multi_toc:1;
3975 unsigned int multi_toc_needed:1;
3976 unsigned int second_toc_pass:1;
3977 unsigned int do_toc_opt:1;
3980 unsigned int stub_error:1;
3982 /* Temp used by ppc64_elf_before_check_relocs. */
3983 unsigned int twiddled_syms:1;
3985 /* Incremented every time we size stubs. */
3986 unsigned int stub_iteration;
3988 /* Small local sym cache. */
3989 struct sym_cache sym_cache;
3992 /* Rename some of the generic section flags to better document how they
3995 /* Nonzero if this section has TLS related relocations. */
3996 #define has_tls_reloc sec_flg0
3998 /* Nonzero if this section has a call to __tls_get_addr. */
3999 #define has_tls_get_addr_call sec_flg1
4001 /* Nonzero if this section has any toc or got relocs. */
4002 #define has_toc_reloc sec_flg2
4004 /* Nonzero if this section has a call to another section that uses
4006 #define makes_toc_func_call sec_flg3
4008 /* Recursion protection when determining above flag. */
4009 #define call_check_in_progress sec_flg4
4010 #define call_check_done sec_flg5
4012 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4014 #define ppc_hash_table(p) \
4015 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4016 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4018 #define ppc_stub_hash_lookup(table, string, create, copy) \
4019 ((struct ppc_stub_hash_entry *) \
4020 bfd_hash_lookup ((table), (string), (create), (copy)))
4022 #define ppc_branch_hash_lookup(table, string, create, copy) \
4023 ((struct ppc_branch_hash_entry *) \
4024 bfd_hash_lookup ((table), (string), (create), (copy)))
4026 /* Create an entry in the stub hash table. */
4028 static struct bfd_hash_entry *
4029 stub_hash_newfunc (struct bfd_hash_entry *entry,
4030 struct bfd_hash_table *table,
4033 /* Allocate the structure if it has not already been allocated by a
4037 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4042 /* Call the allocation method of the superclass. */
4043 entry = bfd_hash_newfunc (entry, table, string);
4046 struct ppc_stub_hash_entry *eh;
4048 /* Initialize the local fields. */
4049 eh = (struct ppc_stub_hash_entry *) entry;
4050 eh->stub_type = ppc_stub_none;
4051 eh->stub_sec = NULL;
4052 eh->stub_offset = 0;
4053 eh->target_value = 0;
4054 eh->target_section = NULL;
4064 /* Create an entry in the branch hash table. */
4066 static struct bfd_hash_entry *
4067 branch_hash_newfunc (struct bfd_hash_entry *entry,
4068 struct bfd_hash_table *table,
4071 /* Allocate the structure if it has not already been allocated by a
4075 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4080 /* Call the allocation method of the superclass. */
4081 entry = bfd_hash_newfunc (entry, table, string);
4084 struct ppc_branch_hash_entry *eh;
4086 /* Initialize the local fields. */
4087 eh = (struct ppc_branch_hash_entry *) entry;
4095 /* Create an entry in a ppc64 ELF linker hash table. */
4097 static struct bfd_hash_entry *
4098 link_hash_newfunc (struct bfd_hash_entry *entry,
4099 struct bfd_hash_table *table,
4102 /* Allocate the structure if it has not already been allocated by a
4106 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4111 /* Call the allocation method of the superclass. */
4112 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4115 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4117 memset (&eh->u.stub_cache, 0,
4118 (sizeof (struct ppc_link_hash_entry)
4119 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4121 /* When making function calls, old ABI code references function entry
4122 points (dot symbols), while new ABI code references the function
4123 descriptor symbol. We need to make any combination of reference and
4124 definition work together, without breaking archive linking.
4126 For a defined function "foo" and an undefined call to "bar":
4127 An old object defines "foo" and ".foo", references ".bar" (possibly
4129 A new object defines "foo" and references "bar".
4131 A new object thus has no problem with its undefined symbols being
4132 satisfied by definitions in an old object. On the other hand, the
4133 old object won't have ".bar" satisfied by a new object.
4135 Keep a list of newly added dot-symbols. */
4137 if (string[0] == '.')
4139 struct ppc_link_hash_table *htab;
4141 htab = (struct ppc_link_hash_table *) table;
4142 eh->u.next_dot_sym = htab->dot_syms;
4143 htab->dot_syms = eh;
4150 struct tocsave_entry {
4156 tocsave_htab_hash (const void *p)
4158 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4159 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4163 tocsave_htab_eq (const void *p1, const void *p2)
4165 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4166 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4167 return e1->sec == e2->sec && e1->offset == e2->offset;
4170 /* Destroy a ppc64 ELF linker hash table. */
4173 ppc64_elf_link_hash_table_free (bfd *obfd)
4175 struct ppc_link_hash_table *htab;
4177 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4178 if (htab->tocsave_htab)
4179 htab_delete (htab->tocsave_htab);
4180 bfd_hash_table_free (&htab->branch_hash_table);
4181 bfd_hash_table_free (&htab->stub_hash_table);
4182 _bfd_elf_link_hash_table_free (obfd);
4185 /* Create a ppc64 ELF linker hash table. */
4187 static struct bfd_link_hash_table *
4188 ppc64_elf_link_hash_table_create (bfd *abfd)
4190 struct ppc_link_hash_table *htab;
4191 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4193 htab = bfd_zmalloc (amt);
4197 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4198 sizeof (struct ppc_link_hash_entry),
4205 /* Init the stub hash table too. */
4206 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4207 sizeof (struct ppc_stub_hash_entry)))
4209 _bfd_elf_link_hash_table_free (abfd);
4213 /* And the branch hash table. */
4214 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4215 sizeof (struct ppc_branch_hash_entry)))
4217 bfd_hash_table_free (&htab->stub_hash_table);
4218 _bfd_elf_link_hash_table_free (abfd);
4222 htab->tocsave_htab = htab_try_create (1024,
4226 if (htab->tocsave_htab == NULL)
4228 ppc64_elf_link_hash_table_free (abfd);
4231 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4233 /* Initializing two fields of the union is just cosmetic. We really
4234 only care about glist, but when compiled on a 32-bit host the
4235 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4236 debugger inspection of these fields look nicer. */
4237 htab->elf.init_got_refcount.refcount = 0;
4238 htab->elf.init_got_refcount.glist = NULL;
4239 htab->elf.init_plt_refcount.refcount = 0;
4240 htab->elf.init_plt_refcount.glist = NULL;
4241 htab->elf.init_got_offset.offset = 0;
4242 htab->elf.init_got_offset.glist = NULL;
4243 htab->elf.init_plt_offset.offset = 0;
4244 htab->elf.init_plt_offset.glist = NULL;
4246 return &htab->elf.root;
4249 /* Create sections for linker generated code. */
4252 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4254 struct ppc_link_hash_table *htab;
4257 htab = ppc_hash_table (info);
4259 /* Create .sfpr for code to save and restore fp regs. */
4260 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4261 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4262 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4264 if (htab->sfpr == NULL
4265 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4268 /* Create .glink for lazy dynamic linking support. */
4269 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4271 if (htab->glink == NULL
4272 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4275 if (!info->no_ld_generated_unwind_info)
4277 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4278 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4279 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4282 if (htab->glink_eh_frame == NULL
4283 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4287 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4288 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4289 if (htab->elf.iplt == NULL
4290 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4293 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4294 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4296 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4297 if (htab->elf.irelplt == NULL
4298 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4301 /* Create branch lookup table for plt_branch stubs. */
4302 flags = (SEC_ALLOC | SEC_LOAD
4303 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4304 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4306 if (htab->brlt == NULL
4307 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4313 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4314 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4315 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4318 if (htab->relbrlt == NULL
4319 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4325 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4328 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4329 struct ppc64_elf_params *params)
4331 struct ppc_link_hash_table *htab;
4333 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4335 /* Always hook our dynamic sections into the first bfd, which is the
4336 linker created stub bfd. This ensures that the GOT header is at
4337 the start of the output TOC section. */
4338 htab = ppc_hash_table (info);
4341 htab->elf.dynobj = params->stub_bfd;
4342 htab->params = params;
4344 if (info->relocatable)
4347 return create_linkage_sections (htab->elf.dynobj, info);
4350 /* Build a name for an entry in the stub hash table. */
4353 ppc_stub_name (const asection *input_section,
4354 const asection *sym_sec,
4355 const struct ppc_link_hash_entry *h,
4356 const Elf_Internal_Rela *rel)
4361 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4362 offsets from a sym as a branch target? In fact, we could
4363 probably assume the addend is always zero. */
4364 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4368 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4369 stub_name = bfd_malloc (len);
4370 if (stub_name == NULL)
4373 len = sprintf (stub_name, "%08x.%s+%x",
4374 input_section->id & 0xffffffff,
4375 h->elf.root.root.string,
4376 (int) rel->r_addend & 0xffffffff);
4380 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4381 stub_name = bfd_malloc (len);
4382 if (stub_name == NULL)
4385 len = sprintf (stub_name, "%08x.%x:%x+%x",
4386 input_section->id & 0xffffffff,
4387 sym_sec->id & 0xffffffff,
4388 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4389 (int) rel->r_addend & 0xffffffff);
4391 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4392 stub_name[len - 2] = 0;
4396 /* Look up an entry in the stub hash. Stub entries are cached because
4397 creating the stub name takes a bit of time. */
4399 static struct ppc_stub_hash_entry *
4400 ppc_get_stub_entry (const asection *input_section,
4401 const asection *sym_sec,
4402 struct ppc_link_hash_entry *h,
4403 const Elf_Internal_Rela *rel,
4404 struct ppc_link_hash_table *htab)
4406 struct ppc_stub_hash_entry *stub_entry;
4407 const asection *id_sec;
4409 /* If this input section is part of a group of sections sharing one
4410 stub section, then use the id of the first section in the group.
4411 Stub names need to include a section id, as there may well be
4412 more than one stub used to reach say, printf, and we need to
4413 distinguish between them. */
4414 id_sec = htab->stub_group[input_section->id].link_sec;
4416 if (h != NULL && h->u.stub_cache != NULL
4417 && h->u.stub_cache->h == h
4418 && h->u.stub_cache->id_sec == id_sec)
4420 stub_entry = h->u.stub_cache;
4426 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4427 if (stub_name == NULL)
4430 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4431 stub_name, FALSE, FALSE);
4433 h->u.stub_cache = stub_entry;
4441 /* Add a new stub entry to the stub hash. Not all fields of the new
4442 stub entry are initialised. */
4444 static struct ppc_stub_hash_entry *
4445 ppc_add_stub (const char *stub_name,
4447 struct bfd_link_info *info)
4449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4452 struct ppc_stub_hash_entry *stub_entry;
4454 link_sec = htab->stub_group[section->id].link_sec;
4455 stub_sec = htab->stub_group[section->id].stub_sec;
4456 if (stub_sec == NULL)
4458 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4459 if (stub_sec == NULL)
4465 namelen = strlen (link_sec->name);
4466 len = namelen + sizeof (STUB_SUFFIX);
4467 s_name = bfd_alloc (htab->params->stub_bfd, len);
4471 memcpy (s_name, link_sec->name, namelen);
4472 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4473 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4474 if (stub_sec == NULL)
4476 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4478 htab->stub_group[section->id].stub_sec = stub_sec;
4481 /* Enter this entry into the linker stub hash table. */
4482 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4484 if (stub_entry == NULL)
4486 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4487 section->owner, stub_name);
4491 stub_entry->stub_sec = stub_sec;
4492 stub_entry->stub_offset = 0;
4493 stub_entry->id_sec = link_sec;
4497 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4498 not already done. */
4501 create_got_section (bfd *abfd, struct bfd_link_info *info)
4503 asection *got, *relgot;
4505 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4507 if (!is_ppc64_elf (abfd))
4513 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4516 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4517 | SEC_LINKER_CREATED);
4519 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4521 || !bfd_set_section_alignment (abfd, got, 3))
4524 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4525 flags | SEC_READONLY);
4527 || ! bfd_set_section_alignment (abfd, relgot, 3))
4530 ppc64_elf_tdata (abfd)->got = got;
4531 ppc64_elf_tdata (abfd)->relgot = relgot;
4535 /* Create the dynamic sections, and set up shortcuts. */
4538 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4540 struct ppc_link_hash_table *htab;
4542 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4545 htab = ppc_hash_table (info);
4549 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4551 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4553 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4554 || (!info->shared && !htab->relbss))
4560 /* Follow indirect and warning symbol links. */
4562 static inline struct bfd_link_hash_entry *
4563 follow_link (struct bfd_link_hash_entry *h)
4565 while (h->type == bfd_link_hash_indirect
4566 || h->type == bfd_link_hash_warning)
4571 static inline struct elf_link_hash_entry *
4572 elf_follow_link (struct elf_link_hash_entry *h)
4574 return (struct elf_link_hash_entry *) follow_link (&h->root);
4577 static inline struct ppc_link_hash_entry *
4578 ppc_follow_link (struct ppc_link_hash_entry *h)
4580 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4583 /* Merge PLT info on FROM with that on TO. */
4586 move_plt_plist (struct ppc_link_hash_entry *from,
4587 struct ppc_link_hash_entry *to)
4589 if (from->elf.plt.plist != NULL)
4591 if (to->elf.plt.plist != NULL)
4593 struct plt_entry **entp;
4594 struct plt_entry *ent;
4596 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4598 struct plt_entry *dent;
4600 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4601 if (dent->addend == ent->addend)
4603 dent->plt.refcount += ent->plt.refcount;
4610 *entp = to->elf.plt.plist;
4613 to->elf.plt.plist = from->elf.plt.plist;
4614 from->elf.plt.plist = NULL;
4618 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4621 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4622 struct elf_link_hash_entry *dir,
4623 struct elf_link_hash_entry *ind)
4625 struct ppc_link_hash_entry *edir, *eind;
4627 edir = (struct ppc_link_hash_entry *) dir;
4628 eind = (struct ppc_link_hash_entry *) ind;
4630 edir->is_func |= eind->is_func;
4631 edir->is_func_descriptor |= eind->is_func_descriptor;
4632 edir->tls_mask |= eind->tls_mask;
4633 if (eind->oh != NULL)
4634 edir->oh = ppc_follow_link (eind->oh);
4636 /* If called to transfer flags for a weakdef during processing
4637 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4638 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4639 if (!(ELIMINATE_COPY_RELOCS
4640 && eind->elf.root.type != bfd_link_hash_indirect
4641 && edir->elf.dynamic_adjusted))
4642 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4644 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4645 edir->elf.ref_regular |= eind->elf.ref_regular;
4646 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4647 edir->elf.needs_plt |= eind->elf.needs_plt;
4648 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4650 /* Copy over any dynamic relocs we may have on the indirect sym. */
4651 if (eind->dyn_relocs != NULL)
4653 if (edir->dyn_relocs != NULL)
4655 struct elf_dyn_relocs **pp;
4656 struct elf_dyn_relocs *p;
4658 /* Add reloc counts against the indirect sym to the direct sym
4659 list. Merge any entries against the same section. */
4660 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4662 struct elf_dyn_relocs *q;
4664 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4665 if (q->sec == p->sec)
4667 q->pc_count += p->pc_count;
4668 q->count += p->count;
4675 *pp = edir->dyn_relocs;
4678 edir->dyn_relocs = eind->dyn_relocs;
4679 eind->dyn_relocs = NULL;
4682 /* If we were called to copy over info for a weak sym, that's all.
4683 You might think dyn_relocs need not be copied over; After all,
4684 both syms will be dynamic or both non-dynamic so we're just
4685 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4686 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4687 dyn_relocs in read-only sections, and it does so on what is the
4689 if (eind->elf.root.type != bfd_link_hash_indirect)
4692 /* Copy over got entries that we may have already seen to the
4693 symbol which just became indirect. */
4694 if (eind->elf.got.glist != NULL)
4696 if (edir->elf.got.glist != NULL)
4698 struct got_entry **entp;
4699 struct got_entry *ent;
4701 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4703 struct got_entry *dent;
4705 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4706 if (dent->addend == ent->addend
4707 && dent->owner == ent->owner
4708 && dent->tls_type == ent->tls_type)
4710 dent->got.refcount += ent->got.refcount;
4717 *entp = edir->elf.got.glist;
4720 edir->elf.got.glist = eind->elf.got.glist;
4721 eind->elf.got.glist = NULL;
4724 /* And plt entries. */
4725 move_plt_plist (eind, edir);
4727 if (eind->elf.dynindx != -1)
4729 if (edir->elf.dynindx != -1)
4730 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4731 edir->elf.dynstr_index);
4732 edir->elf.dynindx = eind->elf.dynindx;
4733 edir->elf.dynstr_index = eind->elf.dynstr_index;
4734 eind->elf.dynindx = -1;
4735 eind->elf.dynstr_index = 0;
4739 /* Find the function descriptor hash entry from the given function code
4740 hash entry FH. Link the entries via their OH fields. */
4742 static struct ppc_link_hash_entry *
4743 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4745 struct ppc_link_hash_entry *fdh = fh->oh;
4749 const char *fd_name = fh->elf.root.root.string + 1;
4751 fdh = (struct ppc_link_hash_entry *)
4752 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4756 fdh->is_func_descriptor = 1;
4762 return ppc_follow_link (fdh);
4765 /* Make a fake function descriptor sym for the code sym FH. */
4767 static struct ppc_link_hash_entry *
4768 make_fdh (struct bfd_link_info *info,
4769 struct ppc_link_hash_entry *fh)
4773 struct bfd_link_hash_entry *bh;
4774 struct ppc_link_hash_entry *fdh;
4776 abfd = fh->elf.root.u.undef.abfd;
4777 newsym = bfd_make_empty_symbol (abfd);
4778 newsym->name = fh->elf.root.root.string + 1;
4779 newsym->section = bfd_und_section_ptr;
4781 newsym->flags = BSF_WEAK;
4784 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4785 newsym->flags, newsym->section,
4786 newsym->value, NULL, FALSE, FALSE,
4790 fdh = (struct ppc_link_hash_entry *) bh;
4791 fdh->elf.non_elf = 0;
4793 fdh->is_func_descriptor = 1;
4800 /* Fix function descriptor symbols defined in .opd sections to be
4804 ppc64_elf_add_symbol_hook (bfd *ibfd,
4805 struct bfd_link_info *info,
4806 Elf_Internal_Sym *isym,
4808 flagword *flags ATTRIBUTE_UNUSED,
4812 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4813 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4814 && (ibfd->flags & DYNAMIC) == 0
4815 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4816 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4819 && strcmp ((*sec)->name, ".opd") == 0)
4823 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4824 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4825 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4827 /* If the symbol is a function defined in .opd, and the function
4828 code is in a discarded group, let it appear to be undefined. */
4829 if (!info->relocatable
4830 && (*sec)->reloc_count != 0
4831 && opd_entry_value (*sec, *value, &code_sec, NULL,
4832 FALSE) != (bfd_vma) -1
4833 && discarded_section (code_sec))
4835 *sec = bfd_und_section_ptr;
4836 isym->st_shndx = SHN_UNDEF;
4839 else if (*sec != NULL
4840 && strcmp ((*sec)->name, ".toc") == 0
4841 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4843 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4845 htab->params->object_in_toc = 1;
4848 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4850 if (abiversion (ibfd) == 0)
4851 set_abiversion (ibfd, 2);
4852 else if (abiversion (ibfd) == 1)
4854 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4855 " for ABI version 1\n"), name);
4856 bfd_set_error (bfd_error_bad_value);
4864 /* Merge non-visibility st_other attributes: local entry point. */
4867 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4868 const Elf_Internal_Sym *isym,
4869 bfd_boolean definition,
4870 bfd_boolean dynamic)
4872 if (definition && !dynamic)
4873 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4874 | ELF_ST_VISIBILITY (h->other));
4877 /* This function makes an old ABI object reference to ".bar" cause the
4878 inclusion of a new ABI object archive that defines "bar".
4879 NAME is a symbol defined in an archive. Return a symbol in the hash
4880 table that might be satisfied by the archive symbols. */
4882 static struct elf_link_hash_entry *
4883 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4884 struct bfd_link_info *info,
4887 struct elf_link_hash_entry *h;
4891 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4893 /* Don't return this sym if it is a fake function descriptor
4894 created by add_symbol_adjust. */
4895 && !(h->root.type == bfd_link_hash_undefweak
4896 && ((struct ppc_link_hash_entry *) h)->fake))
4902 len = strlen (name);
4903 dot_name = bfd_alloc (abfd, len + 2);
4904 if (dot_name == NULL)
4905 return (struct elf_link_hash_entry *) 0 - 1;
4907 memcpy (dot_name + 1, name, len + 1);
4908 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4909 bfd_release (abfd, dot_name);
4913 /* This function satisfies all old ABI object references to ".bar" if a
4914 new ABI object defines "bar". Well, at least, undefined dot symbols
4915 are made weak. This stops later archive searches from including an
4916 object if we already have a function descriptor definition. It also
4917 prevents the linker complaining about undefined symbols.
4918 We also check and correct mismatched symbol visibility here. The
4919 most restrictive visibility of the function descriptor and the
4920 function entry symbol is used. */
4923 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4925 struct ppc_link_hash_table *htab;
4926 struct ppc_link_hash_entry *fdh;
4928 if (eh->elf.root.type == bfd_link_hash_indirect)
4931 if (eh->elf.root.type == bfd_link_hash_warning)
4932 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4934 if (eh->elf.root.root.string[0] != '.')
4937 htab = ppc_hash_table (info);
4941 fdh = lookup_fdh (eh, htab);
4944 if (!info->relocatable
4945 && (eh->elf.root.type == bfd_link_hash_undefined
4946 || eh->elf.root.type == bfd_link_hash_undefweak)
4947 && eh->elf.ref_regular)
4949 /* Make an undefweak function descriptor sym, which is enough to
4950 pull in an --as-needed shared lib, but won't cause link
4951 errors. Archives are handled elsewhere. */
4952 fdh = make_fdh (info, eh);
4955 fdh->elf.ref_regular = 1;
4960 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4961 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4962 if (entry_vis < descr_vis)
4963 fdh->elf.other += entry_vis - descr_vis;
4964 else if (entry_vis > descr_vis)
4965 eh->elf.other += descr_vis - entry_vis;
4967 if ((fdh->elf.root.type == bfd_link_hash_defined
4968 || fdh->elf.root.type == bfd_link_hash_defweak)
4969 && eh->elf.root.type == bfd_link_hash_undefined)
4971 eh->elf.root.type = bfd_link_hash_undefweak;
4972 eh->was_undefined = 1;
4973 htab->twiddled_syms = 1;
4980 /* Set up opd section info and abiversion for IBFD, and process list
4981 of dot-symbols we made in link_hash_newfunc. */
4984 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4986 struct ppc_link_hash_table *htab;
4987 struct ppc_link_hash_entry **p, *eh;
4988 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4990 if (opd != NULL && opd->size != 0)
4992 if (abiversion (ibfd) == 0)
4993 set_abiversion (ibfd, 1);
4994 else if (abiversion (ibfd) == 2)
4996 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4998 ibfd, abiversion (ibfd));
4999 bfd_set_error (bfd_error_bad_value);
5003 if ((ibfd->flags & DYNAMIC) == 0
5004 && (opd->flags & SEC_RELOC) != 0
5005 && opd->reloc_count != 0
5006 && !bfd_is_abs_section (opd->output_section))
5008 /* Garbage collection needs some extra help with .opd sections.
5009 We don't want to necessarily keep everything referenced by
5010 relocs in .opd, as that would keep all functions. Instead,
5011 if we reference an .opd symbol (a function descriptor), we
5012 want to keep the function code symbol's section. This is
5013 easy for global symbols, but for local syms we need to keep
5014 information about the associated function section. */
5016 asection **opd_sym_map;
5018 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5019 opd_sym_map = bfd_zalloc (ibfd, amt);
5020 if (opd_sym_map == NULL)
5022 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5023 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5024 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5028 if (!is_ppc64_elf (info->output_bfd))
5030 htab = ppc_hash_table (info);
5034 /* For input files without an explicit abiversion in e_flags
5035 we should have flagged any with symbol st_other bits set
5036 as ELFv1 and above flagged those with .opd as ELFv2.
5037 Set the output abiversion if not yet set, and for any input
5038 still ambiguous, take its abiversion from the output.
5039 Differences in ABI are reported later. */
5040 if (abiversion (info->output_bfd) == 0)
5041 set_abiversion (info->output_bfd, abiversion (ibfd));
5042 else if (abiversion (ibfd) == 0)
5043 set_abiversion (ibfd, abiversion (info->output_bfd));
5045 p = &htab->dot_syms;
5046 while ((eh = *p) != NULL)
5049 if (&eh->elf == htab->elf.hgot)
5051 else if (htab->elf.hgot == NULL
5052 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5053 htab->elf.hgot = &eh->elf;
5054 else if (!add_symbol_adjust (eh, info))
5056 p = &eh->u.next_dot_sym;
5059 /* Clear the list for non-ppc64 input files. */
5060 p = &htab->dot_syms;
5061 while ((eh = *p) != NULL)
5064 p = &eh->u.next_dot_sym;
5067 /* We need to fix the undefs list for any syms we have twiddled to
5069 if (htab->twiddled_syms)
5071 bfd_link_repair_undef_list (&htab->elf.root);
5072 htab->twiddled_syms = 0;
5077 /* Undo hash table changes when an --as-needed input file is determined
5078 not to be needed. */
5081 ppc64_elf_notice_as_needed (bfd *ibfd,
5082 struct bfd_link_info *info,
5083 enum notice_asneeded_action act)
5085 if (act == notice_not_needed)
5087 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5092 htab->dot_syms = NULL;
5094 return _bfd_elf_notice_as_needed (ibfd, info, act);
5097 /* If --just-symbols against a final linked binary, then assume we need
5098 toc adjusting stubs when calling functions defined there. */
5101 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5103 if ((sec->flags & SEC_CODE) != 0
5104 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5105 && is_ppc64_elf (sec->owner))
5107 if (abiversion (sec->owner) >= 2
5108 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5109 sec->has_toc_reloc = 1;
5111 _bfd_elf_link_just_syms (sec, info);
5114 static struct plt_entry **
5115 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5116 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5118 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5119 struct plt_entry **local_plt;
5120 unsigned char *local_got_tls_masks;
5122 if (local_got_ents == NULL)
5124 bfd_size_type size = symtab_hdr->sh_info;
5126 size *= (sizeof (*local_got_ents)
5127 + sizeof (*local_plt)
5128 + sizeof (*local_got_tls_masks));
5129 local_got_ents = bfd_zalloc (abfd, size);
5130 if (local_got_ents == NULL)
5132 elf_local_got_ents (abfd) = local_got_ents;
5135 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5137 struct got_entry *ent;
5139 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5140 if (ent->addend == r_addend
5141 && ent->owner == abfd
5142 && ent->tls_type == tls_type)
5146 bfd_size_type amt = sizeof (*ent);
5147 ent = bfd_alloc (abfd, amt);
5150 ent->next = local_got_ents[r_symndx];
5151 ent->addend = r_addend;
5153 ent->tls_type = tls_type;
5154 ent->is_indirect = FALSE;
5155 ent->got.refcount = 0;
5156 local_got_ents[r_symndx] = ent;
5158 ent->got.refcount += 1;
5161 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5162 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5163 local_got_tls_masks[r_symndx] |= tls_type;
5165 return local_plt + r_symndx;
5169 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5171 struct plt_entry *ent;
5173 for (ent = *plist; ent != NULL; ent = ent->next)
5174 if (ent->addend == addend)
5178 bfd_size_type amt = sizeof (*ent);
5179 ent = bfd_alloc (abfd, amt);
5183 ent->addend = addend;
5184 ent->plt.refcount = 0;
5187 ent->plt.refcount += 1;
5192 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5194 return (r_type == R_PPC64_REL24
5195 || r_type == R_PPC64_REL14
5196 || r_type == R_PPC64_REL14_BRTAKEN
5197 || r_type == R_PPC64_REL14_BRNTAKEN
5198 || r_type == R_PPC64_ADDR24
5199 || r_type == R_PPC64_ADDR14
5200 || r_type == R_PPC64_ADDR14_BRTAKEN
5201 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5204 /* Look through the relocs for a section during the first phase, and
5205 calculate needed space in the global offset table, procedure
5206 linkage table, and dynamic reloc sections. */
5209 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5210 asection *sec, const Elf_Internal_Rela *relocs)
5212 struct ppc_link_hash_table *htab;
5213 Elf_Internal_Shdr *symtab_hdr;
5214 struct elf_link_hash_entry **sym_hashes;
5215 const Elf_Internal_Rela *rel;
5216 const Elf_Internal_Rela *rel_end;
5218 asection **opd_sym_map;
5219 struct elf_link_hash_entry *tga, *dottga;
5221 if (info->relocatable)
5224 /* Don't do anything special with non-loaded, non-alloced sections.
5225 In particular, any relocs in such sections should not affect GOT
5226 and PLT reference counting (ie. we don't allow them to create GOT
5227 or PLT entries), there's no possibility or desire to optimize TLS
5228 relocs, and there's not much point in propagating relocs to shared
5229 libs that the dynamic linker won't relocate. */
5230 if ((sec->flags & SEC_ALLOC) == 0)
5233 BFD_ASSERT (is_ppc64_elf (abfd));
5235 htab = ppc_hash_table (info);
5239 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5240 FALSE, FALSE, TRUE);
5241 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5242 FALSE, FALSE, TRUE);
5243 symtab_hdr = &elf_symtab_hdr (abfd);
5244 sym_hashes = elf_sym_hashes (abfd);
5247 if (ppc64_elf_section_data (sec) != NULL
5248 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5249 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5251 rel_end = relocs + sec->reloc_count;
5252 for (rel = relocs; rel < rel_end; rel++)
5254 unsigned long r_symndx;
5255 struct elf_link_hash_entry *h;
5256 enum elf_ppc64_reloc_type r_type;
5258 struct _ppc64_elf_section_data *ppc64_sec;
5259 struct plt_entry **ifunc;
5261 r_symndx = ELF64_R_SYM (rel->r_info);
5262 if (r_symndx < symtab_hdr->sh_info)
5266 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5267 h = elf_follow_link (h);
5269 /* PR15323, ref flags aren't set for references in the same
5271 h->root.non_ir_ref = 1;
5273 if (h == htab->elf.hgot)
5274 sec->has_toc_reloc = 1;
5281 if (h->type == STT_GNU_IFUNC)
5284 ifunc = &h->plt.plist;
5289 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5294 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5296 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5297 rel->r_addend, PLT_IFUNC);
5302 r_type = ELF64_R_TYPE (rel->r_info);
5303 if (is_branch_reloc (r_type))
5305 if (h != NULL && (h == tga || h == dottga))
5308 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5309 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5310 /* We have a new-style __tls_get_addr call with a marker
5314 /* Mark this section as having an old-style call. */
5315 sec->has_tls_get_addr_call = 1;
5318 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5320 && !update_plt_info (abfd, ifunc, rel->r_addend))
5328 /* These special tls relocs tie a call to __tls_get_addr with
5329 its parameter symbol. */
5332 case R_PPC64_GOT_TLSLD16:
5333 case R_PPC64_GOT_TLSLD16_LO:
5334 case R_PPC64_GOT_TLSLD16_HI:
5335 case R_PPC64_GOT_TLSLD16_HA:
5336 tls_type = TLS_TLS | TLS_LD;
5339 case R_PPC64_GOT_TLSGD16:
5340 case R_PPC64_GOT_TLSGD16_LO:
5341 case R_PPC64_GOT_TLSGD16_HI:
5342 case R_PPC64_GOT_TLSGD16_HA:
5343 tls_type = TLS_TLS | TLS_GD;
5346 case R_PPC64_GOT_TPREL16_DS:
5347 case R_PPC64_GOT_TPREL16_LO_DS:
5348 case R_PPC64_GOT_TPREL16_HI:
5349 case R_PPC64_GOT_TPREL16_HA:
5351 info->flags |= DF_STATIC_TLS;
5352 tls_type = TLS_TLS | TLS_TPREL;
5355 case R_PPC64_GOT_DTPREL16_DS:
5356 case R_PPC64_GOT_DTPREL16_LO_DS:
5357 case R_PPC64_GOT_DTPREL16_HI:
5358 case R_PPC64_GOT_DTPREL16_HA:
5359 tls_type = TLS_TLS | TLS_DTPREL;
5361 sec->has_tls_reloc = 1;
5365 case R_PPC64_GOT16_DS:
5366 case R_PPC64_GOT16_HA:
5367 case R_PPC64_GOT16_HI:
5368 case R_PPC64_GOT16_LO:
5369 case R_PPC64_GOT16_LO_DS:
5370 /* This symbol requires a global offset table entry. */
5371 sec->has_toc_reloc = 1;
5372 if (r_type == R_PPC64_GOT_TLSLD16
5373 || r_type == R_PPC64_GOT_TLSGD16
5374 || r_type == R_PPC64_GOT_TPREL16_DS
5375 || r_type == R_PPC64_GOT_DTPREL16_DS
5376 || r_type == R_PPC64_GOT16
5377 || r_type == R_PPC64_GOT16_DS)
5379 htab->do_multi_toc = 1;
5380 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5383 if (ppc64_elf_tdata (abfd)->got == NULL
5384 && !create_got_section (abfd, info))
5389 struct ppc_link_hash_entry *eh;
5390 struct got_entry *ent;
5392 eh = (struct ppc_link_hash_entry *) h;
5393 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5394 if (ent->addend == rel->r_addend
5395 && ent->owner == abfd
5396 && ent->tls_type == tls_type)
5400 bfd_size_type amt = sizeof (*ent);
5401 ent = bfd_alloc (abfd, amt);
5404 ent->next = eh->elf.got.glist;
5405 ent->addend = rel->r_addend;
5407 ent->tls_type = tls_type;
5408 ent->is_indirect = FALSE;
5409 ent->got.refcount = 0;
5410 eh->elf.got.glist = ent;
5412 ent->got.refcount += 1;
5413 eh->tls_mask |= tls_type;
5416 /* This is a global offset table entry for a local symbol. */
5417 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5418 rel->r_addend, tls_type))
5421 /* We may also need a plt entry if the symbol turns out to be
5423 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5425 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5430 case R_PPC64_PLT16_HA:
5431 case R_PPC64_PLT16_HI:
5432 case R_PPC64_PLT16_LO:
5435 /* This symbol requires a procedure linkage table entry. We
5436 actually build the entry in adjust_dynamic_symbol,
5437 because this might be a case of linking PIC code without
5438 linking in any dynamic objects, in which case we don't
5439 need to generate a procedure linkage table after all. */
5442 /* It does not make sense to have a procedure linkage
5443 table entry for a local symbol. */
5444 bfd_set_error (bfd_error_bad_value);
5449 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5452 if (h->root.root.string[0] == '.'
5453 && h->root.root.string[1] != '\0')
5454 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5458 /* The following relocations don't need to propagate the
5459 relocation if linking a shared object since they are
5460 section relative. */
5461 case R_PPC64_SECTOFF:
5462 case R_PPC64_SECTOFF_LO:
5463 case R_PPC64_SECTOFF_HI:
5464 case R_PPC64_SECTOFF_HA:
5465 case R_PPC64_SECTOFF_DS:
5466 case R_PPC64_SECTOFF_LO_DS:
5467 case R_PPC64_DTPREL16:
5468 case R_PPC64_DTPREL16_LO:
5469 case R_PPC64_DTPREL16_HI:
5470 case R_PPC64_DTPREL16_HA:
5471 case R_PPC64_DTPREL16_DS:
5472 case R_PPC64_DTPREL16_LO_DS:
5473 case R_PPC64_DTPREL16_HIGH:
5474 case R_PPC64_DTPREL16_HIGHA:
5475 case R_PPC64_DTPREL16_HIGHER:
5476 case R_PPC64_DTPREL16_HIGHERA:
5477 case R_PPC64_DTPREL16_HIGHEST:
5478 case R_PPC64_DTPREL16_HIGHESTA:
5483 case R_PPC64_REL16_LO:
5484 case R_PPC64_REL16_HI:
5485 case R_PPC64_REL16_HA:
5488 /* Not supported as a dynamic relocation. */
5489 case R_PPC64_ADDR64_LOCAL:
5492 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5494 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5495 "in shared libraries and PIEs.\n"),
5496 abfd, sec, rel->r_offset,
5497 ppc64_elf_howto_table[r_type]->name);
5498 bfd_set_error (bfd_error_bad_value);
5504 case R_PPC64_TOC16_DS:
5505 htab->do_multi_toc = 1;
5506 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5507 case R_PPC64_TOC16_LO:
5508 case R_PPC64_TOC16_HI:
5509 case R_PPC64_TOC16_HA:
5510 case R_PPC64_TOC16_LO_DS:
5511 sec->has_toc_reloc = 1;
5514 /* This relocation describes the C++ object vtable hierarchy.
5515 Reconstruct it for later use during GC. */
5516 case R_PPC64_GNU_VTINHERIT:
5517 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5521 /* This relocation describes which C++ vtable entries are actually
5522 used. Record for later use during GC. */
5523 case R_PPC64_GNU_VTENTRY:
5524 BFD_ASSERT (h != NULL);
5526 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5531 case R_PPC64_REL14_BRTAKEN:
5532 case R_PPC64_REL14_BRNTAKEN:
5534 asection *dest = NULL;
5536 /* Heuristic: If jumping outside our section, chances are
5537 we are going to need a stub. */
5540 /* If the sym is weak it may be overridden later, so
5541 don't assume we know where a weak sym lives. */
5542 if (h->root.type == bfd_link_hash_defined)
5543 dest = h->root.u.def.section;
5547 Elf_Internal_Sym *isym;
5549 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5554 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5558 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5563 if (h != NULL && ifunc == NULL)
5565 /* We may need a .plt entry if the function this reloc
5566 refers to is in a shared lib. */
5567 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5570 if (h->root.root.string[0] == '.'
5571 && h->root.root.string[1] != '\0')
5572 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5573 if (h == tga || h == dottga)
5574 sec->has_tls_reloc = 1;
5578 case R_PPC64_TPREL64:
5579 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5581 info->flags |= DF_STATIC_TLS;
5584 case R_PPC64_DTPMOD64:
5585 if (rel + 1 < rel_end
5586 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5587 && rel[1].r_offset == rel->r_offset + 8)
5588 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5590 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5593 case R_PPC64_DTPREL64:
5594 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5596 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5597 && rel[-1].r_offset == rel->r_offset - 8)
5598 /* This is the second reloc of a dtpmod, dtprel pair.
5599 Don't mark with TLS_DTPREL. */
5603 sec->has_tls_reloc = 1;
5606 struct ppc_link_hash_entry *eh;
5607 eh = (struct ppc_link_hash_entry *) h;
5608 eh->tls_mask |= tls_type;
5611 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5612 rel->r_addend, tls_type))
5615 ppc64_sec = ppc64_elf_section_data (sec);
5616 if (ppc64_sec->sec_type != sec_toc)
5620 /* One extra to simplify get_tls_mask. */
5621 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5622 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5623 if (ppc64_sec->u.toc.symndx == NULL)
5625 amt = sec->size * sizeof (bfd_vma) / 8;
5626 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5627 if (ppc64_sec->u.toc.add == NULL)
5629 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5630 ppc64_sec->sec_type = sec_toc;
5632 BFD_ASSERT (rel->r_offset % 8 == 0);
5633 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5634 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5636 /* Mark the second slot of a GD or LD entry.
5637 -1 to indicate GD and -2 to indicate LD. */
5638 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5639 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5640 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5641 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5644 case R_PPC64_TPREL16:
5645 case R_PPC64_TPREL16_LO:
5646 case R_PPC64_TPREL16_HI:
5647 case R_PPC64_TPREL16_HA:
5648 case R_PPC64_TPREL16_DS:
5649 case R_PPC64_TPREL16_LO_DS:
5650 case R_PPC64_TPREL16_HIGH:
5651 case R_PPC64_TPREL16_HIGHA:
5652 case R_PPC64_TPREL16_HIGHER:
5653 case R_PPC64_TPREL16_HIGHERA:
5654 case R_PPC64_TPREL16_HIGHEST:
5655 case R_PPC64_TPREL16_HIGHESTA:
5658 info->flags |= DF_STATIC_TLS;
5663 case R_PPC64_ADDR64:
5664 if (opd_sym_map != NULL
5665 && rel + 1 < rel_end
5666 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5670 if (h->root.root.string[0] == '.'
5671 && h->root.root.string[1] != 0
5672 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5675 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5680 Elf_Internal_Sym *isym;
5682 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5687 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5688 if (s != NULL && s != sec)
5689 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5694 case R_PPC64_ADDR16:
5695 case R_PPC64_ADDR16_DS:
5696 case R_PPC64_ADDR16_HA:
5697 case R_PPC64_ADDR16_HI:
5698 case R_PPC64_ADDR16_HIGH:
5699 case R_PPC64_ADDR16_HIGHA:
5700 case R_PPC64_ADDR16_HIGHER:
5701 case R_PPC64_ADDR16_HIGHERA:
5702 case R_PPC64_ADDR16_HIGHEST:
5703 case R_PPC64_ADDR16_HIGHESTA:
5704 case R_PPC64_ADDR16_LO:
5705 case R_PPC64_ADDR16_LO_DS:
5706 if (h != NULL && !info->shared && abiversion (abfd) != 1
5707 && rel->r_addend == 0)
5709 /* We may need a .plt entry if this reloc refers to a
5710 function in a shared lib. */
5711 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5713 h->pointer_equality_needed = 1;
5720 case R_PPC64_ADDR14:
5721 case R_PPC64_ADDR14_BRNTAKEN:
5722 case R_PPC64_ADDR14_BRTAKEN:
5723 case R_PPC64_ADDR24:
5724 case R_PPC64_ADDR32:
5725 case R_PPC64_UADDR16:
5726 case R_PPC64_UADDR32:
5727 case R_PPC64_UADDR64:
5729 if (h != NULL && !info->shared)
5730 /* We may need a copy reloc. */
5733 /* Don't propagate .opd relocs. */
5734 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5737 /* If we are creating a shared library, and this is a reloc
5738 against a global symbol, or a non PC relative reloc
5739 against a local symbol, then we need to copy the reloc
5740 into the shared library. However, if we are linking with
5741 -Bsymbolic, we do not need to copy a reloc against a
5742 global symbol which is defined in an object we are
5743 including in the link (i.e., DEF_REGULAR is set). At
5744 this point we have not seen all the input files, so it is
5745 possible that DEF_REGULAR is not set now but will be set
5746 later (it is never cleared). In case of a weak definition,
5747 DEF_REGULAR may be cleared later by a strong definition in
5748 a shared library. We account for that possibility below by
5749 storing information in the dyn_relocs field of the hash
5750 table entry. A similar situation occurs when creating
5751 shared libraries and symbol visibility changes render the
5754 If on the other hand, we are creating an executable, we
5755 may need to keep relocations for symbols satisfied by a
5756 dynamic library if we manage to avoid copy relocs for the
5760 && (must_be_dyn_reloc (info, r_type)
5762 && (!SYMBOLIC_BIND (info, h)
5763 || h->root.type == bfd_link_hash_defweak
5764 || !h->def_regular))))
5765 || (ELIMINATE_COPY_RELOCS
5768 && (h->root.type == bfd_link_hash_defweak
5769 || !h->def_regular))
5773 /* We must copy these reloc types into the output file.
5774 Create a reloc section in dynobj and make room for
5778 sreloc = _bfd_elf_make_dynamic_reloc_section
5779 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5785 /* If this is a global symbol, we count the number of
5786 relocations we need for this symbol. */
5789 struct elf_dyn_relocs *p;
5790 struct elf_dyn_relocs **head;
5792 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5794 if (p == NULL || p->sec != sec)
5796 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5806 if (!must_be_dyn_reloc (info, r_type))
5811 /* Track dynamic relocs needed for local syms too.
5812 We really need local syms available to do this
5814 struct ppc_dyn_relocs *p;
5815 struct ppc_dyn_relocs **head;
5816 bfd_boolean is_ifunc;
5819 Elf_Internal_Sym *isym;
5821 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5826 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5830 vpp = &elf_section_data (s)->local_dynrel;
5831 head = (struct ppc_dyn_relocs **) vpp;
5832 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5834 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5836 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5838 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5844 p->ifunc = is_ifunc;
5860 /* Merge backend specific data from an object file to the output
5861 object file when linking. */
5864 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5866 unsigned long iflags, oflags;
5868 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5871 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5874 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5877 iflags = elf_elfheader (ibfd)->e_flags;
5878 oflags = elf_elfheader (obfd)->e_flags;
5880 if (iflags & ~EF_PPC64_ABI)
5882 (*_bfd_error_handler)
5883 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5884 bfd_set_error (bfd_error_bad_value);
5887 else if (iflags != oflags && iflags != 0)
5889 (*_bfd_error_handler)
5890 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5891 ibfd, iflags, oflags);
5892 bfd_set_error (bfd_error_bad_value);
5896 /* Merge Tag_compatibility attributes and any common GNU ones. */
5897 _bfd_elf_merge_object_attributes (ibfd, obfd);
5903 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5905 /* Print normal ELF private data. */
5906 _bfd_elf_print_private_bfd_data (abfd, ptr);
5908 if (elf_elfheader (abfd)->e_flags != 0)
5912 /* xgettext:c-format */
5913 fprintf (file, _("private flags = 0x%lx:"),
5914 elf_elfheader (abfd)->e_flags);
5916 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5917 fprintf (file, _(" [abiv%ld]"),
5918 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5925 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5926 of the code entry point, and its section, which must be in the same
5927 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
5930 opd_entry_value (asection *opd_sec,
5932 asection **code_sec,
5934 bfd_boolean in_code_sec)
5936 bfd *opd_bfd = opd_sec->owner;
5937 Elf_Internal_Rela *relocs;
5938 Elf_Internal_Rela *lo, *hi, *look;
5941 /* No relocs implies we are linking a --just-symbols object, or looking
5942 at a final linked executable with addr2line or somesuch. */
5943 if (opd_sec->reloc_count == 0)
5945 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5947 if (contents == NULL)
5949 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5950 return (bfd_vma) -1;
5951 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5954 val = bfd_get_64 (opd_bfd, contents + offset);
5955 if (code_sec != NULL)
5957 asection *sec, *likely = NULL;
5963 && val < sec->vma + sec->size)
5969 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5971 && (sec->flags & SEC_LOAD) != 0
5972 && (sec->flags & SEC_ALLOC) != 0)
5977 if (code_off != NULL)
5978 *code_off = val - likely->vma;
5984 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5986 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5988 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5989 /* PR 17512: file: df8e1fd6. */
5991 return (bfd_vma) -1;
5993 /* Go find the opd reloc at the sym address. */
5995 BFD_ASSERT (lo != NULL);
5996 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6000 look = lo + (hi - lo) / 2;
6001 if (look->r_offset < offset)
6003 else if (look->r_offset > offset)
6007 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6009 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6010 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6012 unsigned long symndx = ELF64_R_SYM (look->r_info);
6013 asection *sec = NULL;
6015 if (symndx >= symtab_hdr->sh_info
6016 && elf_sym_hashes (opd_bfd) != NULL)
6018 struct elf_link_hash_entry **sym_hashes;
6019 struct elf_link_hash_entry *rh;
6021 sym_hashes = elf_sym_hashes (opd_bfd);
6022 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6025 rh = elf_follow_link (rh);
6026 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6027 || rh->root.type == bfd_link_hash_defweak);
6028 val = rh->root.u.def.value;
6029 sec = rh->root.u.def.section;
6030 if (sec->owner != opd_bfd)
6040 Elf_Internal_Sym *sym;
6042 if (symndx < symtab_hdr->sh_info)
6044 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6047 size_t symcnt = symtab_hdr->sh_info;
6048 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6053 symtab_hdr->contents = (bfd_byte *) sym;
6059 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6065 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6068 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6069 val = sym->st_value;
6072 val += look->r_addend;
6073 if (code_off != NULL)
6075 if (code_sec != NULL)
6077 if (in_code_sec && *code_sec != sec)
6082 if (sec->output_section != NULL)
6083 val += sec->output_section->vma + sec->output_offset;
6092 /* If the ELF symbol SYM might be a function in SEC, return the
6093 function size and set *CODE_OFF to the function's entry point,
6094 otherwise return zero. */
6096 static bfd_size_type
6097 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6102 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6103 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6107 if (!(sym->flags & BSF_SYNTHETIC))
6108 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6110 if (strcmp (sym->section->name, ".opd") == 0)
6112 if (opd_entry_value (sym->section, sym->value,
6113 &sec, code_off, TRUE) == (bfd_vma) -1)
6115 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6116 symbol. This size has nothing to do with the code size of the
6117 function, which is what we're supposed to return, but the
6118 code size isn't available without looking up the dot-sym.
6119 However, doing that would be a waste of time particularly
6120 since elf_find_function will look at the dot-sym anyway.
6121 Now, elf_find_function will keep the largest size of any
6122 function sym found at the code address of interest, so return
6123 1 here to avoid it incorrectly caching a larger function size
6124 for a small function. This does mean we return the wrong
6125 size for a new-ABI function of size 24, but all that does is
6126 disable caching for such functions. */
6132 if (sym->section != sec)
6134 *code_off = sym->value;
6141 /* Return true if symbol is defined in a regular object file. */
6144 is_static_defined (struct elf_link_hash_entry *h)
6146 return ((h->root.type == bfd_link_hash_defined
6147 || h->root.type == bfd_link_hash_defweak)
6148 && h->root.u.def.section != NULL
6149 && h->root.u.def.section->output_section != NULL);
6152 /* If FDH is a function descriptor symbol, return the associated code
6153 entry symbol if it is defined. Return NULL otherwise. */
6155 static struct ppc_link_hash_entry *
6156 defined_code_entry (struct ppc_link_hash_entry *fdh)
6158 if (fdh->is_func_descriptor)
6160 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6161 if (fh->elf.root.type == bfd_link_hash_defined
6162 || fh->elf.root.type == bfd_link_hash_defweak)
6168 /* If FH is a function code entry symbol, return the associated
6169 function descriptor symbol if it is defined. Return NULL otherwise. */
6171 static struct ppc_link_hash_entry *
6172 defined_func_desc (struct ppc_link_hash_entry *fh)
6175 && fh->oh->is_func_descriptor)
6177 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6178 if (fdh->elf.root.type == bfd_link_hash_defined
6179 || fdh->elf.root.type == bfd_link_hash_defweak)
6185 /* Mark all our entry sym sections, both opd and code section. */
6188 ppc64_elf_gc_keep (struct bfd_link_info *info)
6190 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6191 struct bfd_sym_chain *sym;
6196 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6198 struct ppc_link_hash_entry *eh, *fh;
6201 eh = (struct ppc_link_hash_entry *)
6202 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6205 if (eh->elf.root.type != bfd_link_hash_defined
6206 && eh->elf.root.type != bfd_link_hash_defweak)
6209 fh = defined_code_entry (eh);
6212 sec = fh->elf.root.u.def.section;
6213 sec->flags |= SEC_KEEP;
6215 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6216 && opd_entry_value (eh->elf.root.u.def.section,
6217 eh->elf.root.u.def.value,
6218 &sec, NULL, FALSE) != (bfd_vma) -1)
6219 sec->flags |= SEC_KEEP;
6221 sec = eh->elf.root.u.def.section;
6222 sec->flags |= SEC_KEEP;
6226 /* Mark sections containing dynamically referenced symbols. When
6227 building shared libraries, we must assume that any visible symbol is
6231 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6233 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6234 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6235 struct ppc_link_hash_entry *fdh;
6236 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6238 /* Dynamic linking info is on the func descriptor sym. */
6239 fdh = defined_func_desc (eh);
6243 if ((eh->elf.root.type == bfd_link_hash_defined
6244 || eh->elf.root.type == bfd_link_hash_defweak)
6245 && (eh->elf.ref_dynamic
6246 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6247 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6248 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6249 && (!info->executable
6250 || info->export_dynamic
6253 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6254 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6255 || !bfd_hide_sym_by_version (info->version_info,
6256 eh->elf.root.root.string)))))
6259 struct ppc_link_hash_entry *fh;
6261 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6263 /* Function descriptor syms cause the associated
6264 function code sym section to be marked. */
6265 fh = defined_code_entry (eh);
6268 code_sec = fh->elf.root.u.def.section;
6269 code_sec->flags |= SEC_KEEP;
6271 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6272 && opd_entry_value (eh->elf.root.u.def.section,
6273 eh->elf.root.u.def.value,
6274 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6275 code_sec->flags |= SEC_KEEP;
6281 /* Return the section that should be marked against GC for a given
6285 ppc64_elf_gc_mark_hook (asection *sec,
6286 struct bfd_link_info *info,
6287 Elf_Internal_Rela *rel,
6288 struct elf_link_hash_entry *h,
6289 Elf_Internal_Sym *sym)
6293 /* Syms return NULL if we're marking .opd, so we avoid marking all
6294 function sections, as all functions are referenced in .opd. */
6296 if (get_opd_info (sec) != NULL)
6301 enum elf_ppc64_reloc_type r_type;
6302 struct ppc_link_hash_entry *eh, *fh, *fdh;
6304 r_type = ELF64_R_TYPE (rel->r_info);
6307 case R_PPC64_GNU_VTINHERIT:
6308 case R_PPC64_GNU_VTENTRY:
6312 switch (h->root.type)
6314 case bfd_link_hash_defined:
6315 case bfd_link_hash_defweak:
6316 eh = (struct ppc_link_hash_entry *) h;
6317 fdh = defined_func_desc (eh);
6321 /* Function descriptor syms cause the associated
6322 function code sym section to be marked. */
6323 fh = defined_code_entry (eh);
6326 /* They also mark their opd section. */
6327 eh->elf.root.u.def.section->gc_mark = 1;
6329 rsec = fh->elf.root.u.def.section;
6331 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6332 && opd_entry_value (eh->elf.root.u.def.section,
6333 eh->elf.root.u.def.value,
6334 &rsec, NULL, FALSE) != (bfd_vma) -1)
6335 eh->elf.root.u.def.section->gc_mark = 1;
6337 rsec = h->root.u.def.section;
6340 case bfd_link_hash_common:
6341 rsec = h->root.u.c.p->section;
6345 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6351 struct _opd_sec_data *opd;
6353 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6354 opd = get_opd_info (rsec);
6355 if (opd != NULL && opd->func_sec != NULL)
6359 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6366 /* Update the .got, .plt. and dynamic reloc reference counts for the
6367 section being removed. */
6370 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6371 asection *sec, const Elf_Internal_Rela *relocs)
6373 struct ppc_link_hash_table *htab;
6374 Elf_Internal_Shdr *symtab_hdr;
6375 struct elf_link_hash_entry **sym_hashes;
6376 struct got_entry **local_got_ents;
6377 const Elf_Internal_Rela *rel, *relend;
6379 if (info->relocatable)
6382 if ((sec->flags & SEC_ALLOC) == 0)
6385 elf_section_data (sec)->local_dynrel = NULL;
6387 htab = ppc_hash_table (info);
6391 symtab_hdr = &elf_symtab_hdr (abfd);
6392 sym_hashes = elf_sym_hashes (abfd);
6393 local_got_ents = elf_local_got_ents (abfd);
6395 relend = relocs + sec->reloc_count;
6396 for (rel = relocs; rel < relend; rel++)
6398 unsigned long r_symndx;
6399 enum elf_ppc64_reloc_type r_type;
6400 struct elf_link_hash_entry *h = NULL;
6401 unsigned char tls_type = 0;
6403 r_symndx = ELF64_R_SYM (rel->r_info);
6404 r_type = ELF64_R_TYPE (rel->r_info);
6405 if (r_symndx >= symtab_hdr->sh_info)
6407 struct ppc_link_hash_entry *eh;
6408 struct elf_dyn_relocs **pp;
6409 struct elf_dyn_relocs *p;
6411 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6412 h = elf_follow_link (h);
6413 eh = (struct ppc_link_hash_entry *) h;
6415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6418 /* Everything must go for SEC. */
6424 if (is_branch_reloc (r_type))
6426 struct plt_entry **ifunc = NULL;
6429 if (h->type == STT_GNU_IFUNC)
6430 ifunc = &h->plt.plist;
6432 else if (local_got_ents != NULL)
6434 struct plt_entry **local_plt = (struct plt_entry **)
6435 (local_got_ents + symtab_hdr->sh_info);
6436 unsigned char *local_got_tls_masks = (unsigned char *)
6437 (local_plt + symtab_hdr->sh_info);
6438 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6439 ifunc = local_plt + r_symndx;
6443 struct plt_entry *ent;
6445 for (ent = *ifunc; ent != NULL; ent = ent->next)
6446 if (ent->addend == rel->r_addend)
6450 if (ent->plt.refcount > 0)
6451 ent->plt.refcount -= 1;
6458 case R_PPC64_GOT_TLSLD16:
6459 case R_PPC64_GOT_TLSLD16_LO:
6460 case R_PPC64_GOT_TLSLD16_HI:
6461 case R_PPC64_GOT_TLSLD16_HA:
6462 tls_type = TLS_TLS | TLS_LD;
6465 case R_PPC64_GOT_TLSGD16:
6466 case R_PPC64_GOT_TLSGD16_LO:
6467 case R_PPC64_GOT_TLSGD16_HI:
6468 case R_PPC64_GOT_TLSGD16_HA:
6469 tls_type = TLS_TLS | TLS_GD;
6472 case R_PPC64_GOT_TPREL16_DS:
6473 case R_PPC64_GOT_TPREL16_LO_DS:
6474 case R_PPC64_GOT_TPREL16_HI:
6475 case R_PPC64_GOT_TPREL16_HA:
6476 tls_type = TLS_TLS | TLS_TPREL;
6479 case R_PPC64_GOT_DTPREL16_DS:
6480 case R_PPC64_GOT_DTPREL16_LO_DS:
6481 case R_PPC64_GOT_DTPREL16_HI:
6482 case R_PPC64_GOT_DTPREL16_HA:
6483 tls_type = TLS_TLS | TLS_DTPREL;
6487 case R_PPC64_GOT16_DS:
6488 case R_PPC64_GOT16_HA:
6489 case R_PPC64_GOT16_HI:
6490 case R_PPC64_GOT16_LO:
6491 case R_PPC64_GOT16_LO_DS:
6494 struct got_entry *ent;
6499 ent = local_got_ents[r_symndx];
6501 for (; ent != NULL; ent = ent->next)
6502 if (ent->addend == rel->r_addend
6503 && ent->owner == abfd
6504 && ent->tls_type == tls_type)
6508 if (ent->got.refcount > 0)
6509 ent->got.refcount -= 1;
6513 case R_PPC64_PLT16_HA:
6514 case R_PPC64_PLT16_HI:
6515 case R_PPC64_PLT16_LO:
6519 case R_PPC64_REL14_BRNTAKEN:
6520 case R_PPC64_REL14_BRTAKEN:
6524 struct plt_entry *ent;
6526 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6527 if (ent->addend == rel->r_addend)
6529 if (ent != NULL && ent->plt.refcount > 0)
6530 ent->plt.refcount -= 1;
6541 /* The maximum size of .sfpr. */
6542 #define SFPR_MAX (218*4)
6544 struct sfpr_def_parms
6546 const char name[12];
6547 unsigned char lo, hi;
6548 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6549 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6552 /* Auto-generate _save*, _rest* functions in .sfpr. */
6555 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6559 size_t len = strlen (parm->name);
6560 bfd_boolean writing = FALSE;
6566 memcpy (sym, parm->name, len);
6569 for (i = parm->lo; i <= parm->hi; i++)
6571 struct elf_link_hash_entry *h;
6573 sym[len + 0] = i / 10 + '0';
6574 sym[len + 1] = i % 10 + '0';
6575 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6579 h->root.type = bfd_link_hash_defined;
6580 h->root.u.def.section = htab->sfpr;
6581 h->root.u.def.value = htab->sfpr->size;
6584 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6586 if (htab->sfpr->contents == NULL)
6588 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6589 if (htab->sfpr->contents == NULL)
6595 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6597 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6599 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6600 htab->sfpr->size = p - htab->sfpr->contents;
6608 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6610 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6615 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6617 p = savegpr0 (abfd, p, r);
6618 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6620 bfd_put_32 (abfd, BLR, p);
6625 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6627 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6632 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6634 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6636 p = restgpr0 (abfd, p, r);
6637 bfd_put_32 (abfd, MTLR_R0, p);
6641 p = restgpr0 (abfd, p, 30);
6642 p = restgpr0 (abfd, p, 31);
6644 bfd_put_32 (abfd, BLR, p);
6649 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6651 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6656 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6658 p = savegpr1 (abfd, p, r);
6659 bfd_put_32 (abfd, BLR, p);
6664 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6666 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6671 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6673 p = restgpr1 (abfd, p, r);
6674 bfd_put_32 (abfd, BLR, p);
6679 savefpr (bfd *abfd, bfd_byte *p, int r)
6681 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6686 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6688 p = savefpr (abfd, p, r);
6689 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6691 bfd_put_32 (abfd, BLR, p);
6696 restfpr (bfd *abfd, bfd_byte *p, int r)
6698 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6703 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6705 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6707 p = restfpr (abfd, p, r);
6708 bfd_put_32 (abfd, MTLR_R0, p);
6712 p = restfpr (abfd, p, 30);
6713 p = restfpr (abfd, p, 31);
6715 bfd_put_32 (abfd, BLR, p);
6720 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6722 p = savefpr (abfd, p, r);
6723 bfd_put_32 (abfd, BLR, p);
6728 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6730 p = restfpr (abfd, p, r);
6731 bfd_put_32 (abfd, BLR, p);
6736 savevr (bfd *abfd, bfd_byte *p, int r)
6738 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6740 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6745 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6747 p = savevr (abfd, p, r);
6748 bfd_put_32 (abfd, BLR, p);
6753 restvr (bfd *abfd, bfd_byte *p, int r)
6755 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6757 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6762 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6764 p = restvr (abfd, p, r);
6765 bfd_put_32 (abfd, BLR, p);
6769 /* Called via elf_link_hash_traverse to transfer dynamic linking
6770 information on function code symbol entries to their corresponding
6771 function descriptor symbol entries. */
6774 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6776 struct bfd_link_info *info;
6777 struct ppc_link_hash_table *htab;
6778 struct plt_entry *ent;
6779 struct ppc_link_hash_entry *fh;
6780 struct ppc_link_hash_entry *fdh;
6781 bfd_boolean force_local;
6783 fh = (struct ppc_link_hash_entry *) h;
6784 if (fh->elf.root.type == bfd_link_hash_indirect)
6788 htab = ppc_hash_table (info);
6792 /* Resolve undefined references to dot-symbols as the value
6793 in the function descriptor, if we have one in a regular object.
6794 This is to satisfy cases like ".quad .foo". Calls to functions
6795 in dynamic objects are handled elsewhere. */
6796 if (fh->elf.root.type == bfd_link_hash_undefweak
6797 && fh->was_undefined
6798 && (fdh = defined_func_desc (fh)) != NULL
6799 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6800 && opd_entry_value (fdh->elf.root.u.def.section,
6801 fdh->elf.root.u.def.value,
6802 &fh->elf.root.u.def.section,
6803 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6805 fh->elf.root.type = fdh->elf.root.type;
6806 fh->elf.forced_local = 1;
6807 fh->elf.def_regular = fdh->elf.def_regular;
6808 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6811 /* If this is a function code symbol, transfer dynamic linking
6812 information to the function descriptor symbol. */
6816 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6817 if (ent->plt.refcount > 0)
6820 || fh->elf.root.root.string[0] != '.'
6821 || fh->elf.root.root.string[1] == '\0')
6824 /* Find the corresponding function descriptor symbol. Create it
6825 as undefined if necessary. */
6827 fdh = lookup_fdh (fh, htab);
6829 && !info->executable
6830 && (fh->elf.root.type == bfd_link_hash_undefined
6831 || fh->elf.root.type == bfd_link_hash_undefweak))
6833 fdh = make_fdh (info, fh);
6838 /* Fake function descriptors are made undefweak. If the function
6839 code symbol is strong undefined, make the fake sym the same.
6840 If the function code symbol is defined, then force the fake
6841 descriptor local; We can't support overriding of symbols in a
6842 shared library on a fake descriptor. */
6846 && fdh->elf.root.type == bfd_link_hash_undefweak)
6848 if (fh->elf.root.type == bfd_link_hash_undefined)
6850 fdh->elf.root.type = bfd_link_hash_undefined;
6851 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6853 else if (fh->elf.root.type == bfd_link_hash_defined
6854 || fh->elf.root.type == bfd_link_hash_defweak)
6856 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6861 && !fdh->elf.forced_local
6862 && (!info->executable
6863 || fdh->elf.def_dynamic
6864 || fdh->elf.ref_dynamic
6865 || (fdh->elf.root.type == bfd_link_hash_undefweak
6866 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6868 if (fdh->elf.dynindx == -1)
6869 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6871 fdh->elf.ref_regular |= fh->elf.ref_regular;
6872 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6873 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6874 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6875 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6877 move_plt_plist (fh, fdh);
6878 fdh->elf.needs_plt = 1;
6880 fdh->is_func_descriptor = 1;
6885 /* Now that the info is on the function descriptor, clear the
6886 function code sym info. Any function code syms for which we
6887 don't have a definition in a regular file, we force local.
6888 This prevents a shared library from exporting syms that have
6889 been imported from another library. Function code syms that
6890 are really in the library we must leave global to prevent the
6891 linker dragging in a definition from a static library. */
6892 force_local = (!fh->elf.def_regular
6894 || !fdh->elf.def_regular
6895 || fdh->elf.forced_local);
6896 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6901 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6902 this hook to a) provide some gcc support functions, and b) transfer
6903 dynamic linking information gathered so far on function code symbol
6904 entries, to their corresponding function descriptor symbol entries. */
6907 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6908 struct bfd_link_info *info)
6910 struct ppc_link_hash_table *htab;
6912 static const struct sfpr_def_parms funcs[] =
6914 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6915 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6916 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6917 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6918 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6919 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6920 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6921 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6922 { "._savef", 14, 31, savefpr, savefpr1_tail },
6923 { "._restf", 14, 31, restfpr, restfpr1_tail },
6924 { "_savevr_", 20, 31, savevr, savevr_tail },
6925 { "_restvr_", 20, 31, restvr, restvr_tail }
6928 htab = ppc_hash_table (info);
6932 if (!info->relocatable
6933 && htab->elf.hgot != NULL)
6935 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6936 /* Make .TOC. defined so as to prevent it being made dynamic.
6937 The wrong value here is fixed later in ppc64_elf_set_toc. */
6938 htab->elf.hgot->type = STT_OBJECT;
6939 htab->elf.hgot->root.type = bfd_link_hash_defined;
6940 htab->elf.hgot->root.u.def.value = 0;
6941 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6942 htab->elf.hgot->def_regular = 1;
6943 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6947 if (htab->sfpr == NULL)
6948 /* We don't have any relocs. */
6951 /* Provide any missing _save* and _rest* functions. */
6952 htab->sfpr->size = 0;
6953 if (htab->params->save_restore_funcs)
6954 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6955 if (!sfpr_define (info, &funcs[i]))
6958 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6960 if (htab->sfpr->size == 0)
6961 htab->sfpr->flags |= SEC_EXCLUDE;
6966 /* Return true if we have dynamic relocs that apply to read-only sections. */
6969 readonly_dynrelocs (struct elf_link_hash_entry *h)
6971 struct ppc_link_hash_entry *eh;
6972 struct elf_dyn_relocs *p;
6974 eh = (struct ppc_link_hash_entry *) h;
6975 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6977 asection *s = p->sec->output_section;
6979 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6985 /* Adjust a symbol defined by a dynamic object and referenced by a
6986 regular object. The current definition is in some section of the
6987 dynamic object, but we're not including those sections. We have to
6988 change the definition to something the rest of the link can
6992 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6993 struct elf_link_hash_entry *h)
6995 struct ppc_link_hash_table *htab;
6998 htab = ppc_hash_table (info);
7002 /* Deal with function syms. */
7003 if (h->type == STT_FUNC
7004 || h->type == STT_GNU_IFUNC
7007 /* Clear procedure linkage table information for any symbol that
7008 won't need a .plt entry. */
7009 struct plt_entry *ent;
7010 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7011 if (ent->plt.refcount > 0)
7014 || (h->type != STT_GNU_IFUNC
7015 && (SYMBOL_CALLS_LOCAL (info, h)
7016 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7017 && h->root.type == bfd_link_hash_undefweak))))
7019 h->plt.plist = NULL;
7021 h->pointer_equality_needed = 0;
7023 else if (abiversion (info->output_bfd) == 2)
7025 /* Taking a function's address in a read/write section
7026 doesn't require us to define the function symbol in the
7027 executable on a global entry stub. A dynamic reloc can
7029 if (h->pointer_equality_needed
7030 && h->type != STT_GNU_IFUNC
7031 && !readonly_dynrelocs (h))
7033 h->pointer_equality_needed = 0;
7037 /* After adjust_dynamic_symbol, non_got_ref set in the
7038 non-shared case means that we have allocated space in
7039 .dynbss for the symbol and thus dyn_relocs for this
7040 symbol should be discarded.
7041 If we get here we know we are making a PLT entry for this
7042 symbol, and in an executable we'd normally resolve
7043 relocations against this symbol to the PLT entry. Allow
7044 dynamic relocs if the reference is weak, and the dynamic
7045 relocs will not cause text relocation. */
7046 else if (!h->ref_regular_nonweak
7048 && h->type != STT_GNU_IFUNC
7049 && !readonly_dynrelocs (h))
7052 /* If making a plt entry, then we don't need copy relocs. */
7057 h->plt.plist = NULL;
7059 /* If this is a weak symbol, and there is a real definition, the
7060 processor independent code will have arranged for us to see the
7061 real definition first, and we can just use the same value. */
7062 if (h->u.weakdef != NULL)
7064 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7065 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7066 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7067 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7068 if (ELIMINATE_COPY_RELOCS)
7069 h->non_got_ref = h->u.weakdef->non_got_ref;
7073 /* If we are creating a shared library, we must presume that the
7074 only references to the symbol are via the global offset table.
7075 For such cases we need not do anything here; the relocations will
7076 be handled correctly by relocate_section. */
7080 /* If there are no references to this symbol that do not use the
7081 GOT, we don't need to generate a copy reloc. */
7082 if (!h->non_got_ref)
7085 /* Don't generate a copy reloc for symbols defined in the executable. */
7086 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7089 /* If we didn't find any dynamic relocs in read-only sections, then
7090 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7091 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7097 if (h->plt.plist != NULL)
7099 /* We should never get here, but unfortunately there are versions
7100 of gcc out there that improperly (for this ABI) put initialized
7101 function pointers, vtable refs and suchlike in read-only
7102 sections. Allow them to proceed, but warn that this might
7103 break at runtime. */
7104 info->callbacks->einfo
7105 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7106 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7107 h->root.root.string);
7110 /* This is a reference to a symbol defined by a dynamic object which
7111 is not a function. */
7113 /* We must allocate the symbol in our .dynbss section, which will
7114 become part of the .bss section of the executable. There will be
7115 an entry for this symbol in the .dynsym section. The dynamic
7116 object will contain position independent code, so all references
7117 from the dynamic object to this symbol will go through the global
7118 offset table. The dynamic linker will use the .dynsym entry to
7119 determine the address it must put in the global offset table, so
7120 both the dynamic object and the regular object will refer to the
7121 same memory location for the variable. */
7123 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7124 to copy the initial value out of the dynamic object and into the
7125 runtime process image. We need to remember the offset into the
7126 .rela.bss section we are going to use. */
7127 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7129 htab->relbss->size += sizeof (Elf64_External_Rela);
7135 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7138 /* If given a function descriptor symbol, hide both the function code
7139 sym and the descriptor. */
7141 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7142 struct elf_link_hash_entry *h,
7143 bfd_boolean force_local)
7145 struct ppc_link_hash_entry *eh;
7146 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7148 eh = (struct ppc_link_hash_entry *) h;
7149 if (eh->is_func_descriptor)
7151 struct ppc_link_hash_entry *fh = eh->oh;
7156 struct ppc_link_hash_table *htab;
7159 /* We aren't supposed to use alloca in BFD because on
7160 systems which do not have alloca the version in libiberty
7161 calls xmalloc, which might cause the program to crash
7162 when it runs out of memory. This function doesn't have a
7163 return status, so there's no way to gracefully return an
7164 error. So cheat. We know that string[-1] can be safely
7165 accessed; It's either a string in an ELF string table,
7166 or allocated in an objalloc structure. */
7168 p = eh->elf.root.root.string - 1;
7171 htab = ppc_hash_table (info);
7175 fh = (struct ppc_link_hash_entry *)
7176 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7179 /* Unfortunately, if it so happens that the string we were
7180 looking for was allocated immediately before this string,
7181 then we overwrote the string terminator. That's the only
7182 reason the lookup should fail. */
7185 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7186 while (q >= eh->elf.root.root.string && *q == *p)
7188 if (q < eh->elf.root.root.string && *p == '.')
7189 fh = (struct ppc_link_hash_entry *)
7190 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7199 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7204 get_sym_h (struct elf_link_hash_entry **hp,
7205 Elf_Internal_Sym **symp,
7207 unsigned char **tls_maskp,
7208 Elf_Internal_Sym **locsymsp,
7209 unsigned long r_symndx,
7212 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7214 if (r_symndx >= symtab_hdr->sh_info)
7216 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7217 struct elf_link_hash_entry *h;
7219 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7220 h = elf_follow_link (h);
7228 if (symsecp != NULL)
7230 asection *symsec = NULL;
7231 if (h->root.type == bfd_link_hash_defined
7232 || h->root.type == bfd_link_hash_defweak)
7233 symsec = h->root.u.def.section;
7237 if (tls_maskp != NULL)
7239 struct ppc_link_hash_entry *eh;
7241 eh = (struct ppc_link_hash_entry *) h;
7242 *tls_maskp = &eh->tls_mask;
7247 Elf_Internal_Sym *sym;
7248 Elf_Internal_Sym *locsyms = *locsymsp;
7250 if (locsyms == NULL)
7252 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7253 if (locsyms == NULL)
7254 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7255 symtab_hdr->sh_info,
7256 0, NULL, NULL, NULL);
7257 if (locsyms == NULL)
7259 *locsymsp = locsyms;
7261 sym = locsyms + r_symndx;
7269 if (symsecp != NULL)
7270 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7272 if (tls_maskp != NULL)
7274 struct got_entry **lgot_ents;
7275 unsigned char *tls_mask;
7278 lgot_ents = elf_local_got_ents (ibfd);
7279 if (lgot_ents != NULL)
7281 struct plt_entry **local_plt = (struct plt_entry **)
7282 (lgot_ents + symtab_hdr->sh_info);
7283 unsigned char *lgot_masks = (unsigned char *)
7284 (local_plt + symtab_hdr->sh_info);
7285 tls_mask = &lgot_masks[r_symndx];
7287 *tls_maskp = tls_mask;
7293 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7294 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7295 type suitable for optimization, and 1 otherwise. */
7298 get_tls_mask (unsigned char **tls_maskp,
7299 unsigned long *toc_symndx,
7300 bfd_vma *toc_addend,
7301 Elf_Internal_Sym **locsymsp,
7302 const Elf_Internal_Rela *rel,
7305 unsigned long r_symndx;
7307 struct elf_link_hash_entry *h;
7308 Elf_Internal_Sym *sym;
7312 r_symndx = ELF64_R_SYM (rel->r_info);
7313 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7316 if ((*tls_maskp != NULL && **tls_maskp != 0)
7318 || ppc64_elf_section_data (sec) == NULL
7319 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7322 /* Look inside a TOC section too. */
7325 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7326 off = h->root.u.def.value;
7329 off = sym->st_value;
7330 off += rel->r_addend;
7331 BFD_ASSERT (off % 8 == 0);
7332 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7333 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7334 if (toc_symndx != NULL)
7335 *toc_symndx = r_symndx;
7336 if (toc_addend != NULL)
7337 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7338 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7340 if ((h == NULL || is_static_defined (h))
7341 && (next_r == -1 || next_r == -2))
7346 /* Find (or create) an entry in the tocsave hash table. */
7348 static struct tocsave_entry *
7349 tocsave_find (struct ppc_link_hash_table *htab,
7350 enum insert_option insert,
7351 Elf_Internal_Sym **local_syms,
7352 const Elf_Internal_Rela *irela,
7355 unsigned long r_indx;
7356 struct elf_link_hash_entry *h;
7357 Elf_Internal_Sym *sym;
7358 struct tocsave_entry ent, *p;
7360 struct tocsave_entry **slot;
7362 r_indx = ELF64_R_SYM (irela->r_info);
7363 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7365 if (ent.sec == NULL || ent.sec->output_section == NULL)
7367 (*_bfd_error_handler)
7368 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7373 ent.offset = h->root.u.def.value;
7375 ent.offset = sym->st_value;
7376 ent.offset += irela->r_addend;
7378 hash = tocsave_htab_hash (&ent);
7379 slot = ((struct tocsave_entry **)
7380 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7386 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7395 /* Adjust all global syms defined in opd sections. In gcc generated
7396 code for the old ABI, these will already have been done. */
7399 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7401 struct ppc_link_hash_entry *eh;
7403 struct _opd_sec_data *opd;
7405 if (h->root.type == bfd_link_hash_indirect)
7408 if (h->root.type != bfd_link_hash_defined
7409 && h->root.type != bfd_link_hash_defweak)
7412 eh = (struct ppc_link_hash_entry *) h;
7413 if (eh->adjust_done)
7416 sym_sec = eh->elf.root.u.def.section;
7417 opd = get_opd_info (sym_sec);
7418 if (opd != NULL && opd->adjust != NULL)
7420 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7423 /* This entry has been deleted. */
7424 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7427 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7428 if (discarded_section (dsec))
7430 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7434 eh->elf.root.u.def.value = 0;
7435 eh->elf.root.u.def.section = dsec;
7438 eh->elf.root.u.def.value += adjust;
7439 eh->adjust_done = 1;
7444 /* Handles decrementing dynamic reloc counts for the reloc specified by
7445 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7446 have already been determined. */
7449 dec_dynrel_count (bfd_vma r_info,
7451 struct bfd_link_info *info,
7452 Elf_Internal_Sym **local_syms,
7453 struct elf_link_hash_entry *h,
7454 Elf_Internal_Sym *sym)
7456 enum elf_ppc64_reloc_type r_type;
7457 asection *sym_sec = NULL;
7459 /* Can this reloc be dynamic? This switch, and later tests here
7460 should be kept in sync with the code in check_relocs. */
7461 r_type = ELF64_R_TYPE (r_info);
7467 case R_PPC64_TPREL16:
7468 case R_PPC64_TPREL16_LO:
7469 case R_PPC64_TPREL16_HI:
7470 case R_PPC64_TPREL16_HA:
7471 case R_PPC64_TPREL16_DS:
7472 case R_PPC64_TPREL16_LO_DS:
7473 case R_PPC64_TPREL16_HIGH:
7474 case R_PPC64_TPREL16_HIGHA:
7475 case R_PPC64_TPREL16_HIGHER:
7476 case R_PPC64_TPREL16_HIGHERA:
7477 case R_PPC64_TPREL16_HIGHEST:
7478 case R_PPC64_TPREL16_HIGHESTA:
7482 case R_PPC64_TPREL64:
7483 case R_PPC64_DTPMOD64:
7484 case R_PPC64_DTPREL64:
7485 case R_PPC64_ADDR64:
7489 case R_PPC64_ADDR14:
7490 case R_PPC64_ADDR14_BRNTAKEN:
7491 case R_PPC64_ADDR14_BRTAKEN:
7492 case R_PPC64_ADDR16:
7493 case R_PPC64_ADDR16_DS:
7494 case R_PPC64_ADDR16_HA:
7495 case R_PPC64_ADDR16_HI:
7496 case R_PPC64_ADDR16_HIGH:
7497 case R_PPC64_ADDR16_HIGHA:
7498 case R_PPC64_ADDR16_HIGHER:
7499 case R_PPC64_ADDR16_HIGHERA:
7500 case R_PPC64_ADDR16_HIGHEST:
7501 case R_PPC64_ADDR16_HIGHESTA:
7502 case R_PPC64_ADDR16_LO:
7503 case R_PPC64_ADDR16_LO_DS:
7504 case R_PPC64_ADDR24:
7505 case R_PPC64_ADDR32:
7506 case R_PPC64_UADDR16:
7507 case R_PPC64_UADDR32:
7508 case R_PPC64_UADDR64:
7513 if (local_syms != NULL)
7515 unsigned long r_symndx;
7516 bfd *ibfd = sec->owner;
7518 r_symndx = ELF64_R_SYM (r_info);
7519 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7524 && (must_be_dyn_reloc (info, r_type)
7526 && (!SYMBOLIC_BIND (info, h)
7527 || h->root.type == bfd_link_hash_defweak
7528 || !h->def_regular))))
7529 || (ELIMINATE_COPY_RELOCS
7532 && (h->root.type == bfd_link_hash_defweak
7533 || !h->def_regular)))
7540 struct elf_dyn_relocs *p;
7541 struct elf_dyn_relocs **pp;
7542 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7544 /* elf_gc_sweep may have already removed all dyn relocs associated
7545 with local syms for a given section. Also, symbol flags are
7546 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7547 report a dynreloc miscount. */
7548 if (*pp == NULL && info->gc_sections)
7551 while ((p = *pp) != NULL)
7555 if (!must_be_dyn_reloc (info, r_type))
7567 struct ppc_dyn_relocs *p;
7568 struct ppc_dyn_relocs **pp;
7570 bfd_boolean is_ifunc;
7572 if (local_syms == NULL)
7573 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7574 if (sym_sec == NULL)
7577 vpp = &elf_section_data (sym_sec)->local_dynrel;
7578 pp = (struct ppc_dyn_relocs **) vpp;
7580 if (*pp == NULL && info->gc_sections)
7583 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7584 while ((p = *pp) != NULL)
7586 if (p->sec == sec && p->ifunc == is_ifunc)
7597 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7599 bfd_set_error (bfd_error_bad_value);
7603 /* Remove unused Official Procedure Descriptor entries. Currently we
7604 only remove those associated with functions in discarded link-once
7605 sections, or weakly defined functions that have been overridden. It
7606 would be possible to remove many more entries for statically linked
7610 ppc64_elf_edit_opd (struct bfd_link_info *info)
7613 bfd_boolean some_edited = FALSE;
7614 asection *need_pad = NULL;
7615 struct ppc_link_hash_table *htab;
7617 htab = ppc_hash_table (info);
7621 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7624 Elf_Internal_Rela *relstart, *rel, *relend;
7625 Elf_Internal_Shdr *symtab_hdr;
7626 Elf_Internal_Sym *local_syms;
7627 struct _opd_sec_data *opd;
7628 bfd_boolean need_edit, add_aux_fields, broken;
7629 bfd_size_type cnt_16b = 0;
7631 if (!is_ppc64_elf (ibfd))
7634 sec = bfd_get_section_by_name (ibfd, ".opd");
7635 if (sec == NULL || sec->size == 0)
7638 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7641 if (sec->output_section == bfd_abs_section_ptr)
7644 /* Look through the section relocs. */
7645 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7649 symtab_hdr = &elf_symtab_hdr (ibfd);
7651 /* Read the relocations. */
7652 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7654 if (relstart == NULL)
7657 /* First run through the relocs to check they are sane, and to
7658 determine whether we need to edit this opd section. */
7662 relend = relstart + sec->reloc_count;
7663 for (rel = relstart; rel < relend; )
7665 enum elf_ppc64_reloc_type r_type;
7666 unsigned long r_symndx;
7668 struct elf_link_hash_entry *h;
7669 Elf_Internal_Sym *sym;
7672 /* .opd contains an array of 16 or 24 byte entries. We're
7673 only interested in the reloc pointing to a function entry
7675 offset = rel->r_offset;
7676 if (rel + 1 == relend
7677 || rel[1].r_offset != offset + 8)
7679 /* If someone messes with .opd alignment then after a
7680 "ld -r" we might have padding in the middle of .opd.
7681 Also, there's nothing to prevent someone putting
7682 something silly in .opd with the assembler. No .opd
7683 optimization for them! */
7685 (*_bfd_error_handler)
7686 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7691 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7692 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7694 (*_bfd_error_handler)
7695 (_("%B: unexpected reloc type %u in .opd section"),
7701 r_symndx = ELF64_R_SYM (rel->r_info);
7702 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7706 if (sym_sec == NULL || sym_sec->owner == NULL)
7708 const char *sym_name;
7710 sym_name = h->root.root.string;
7712 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7715 (*_bfd_error_handler)
7716 (_("%B: undefined sym `%s' in .opd section"),
7722 /* opd entries are always for functions defined in the
7723 current input bfd. If the symbol isn't defined in the
7724 input bfd, then we won't be using the function in this
7725 bfd; It must be defined in a linkonce section in another
7726 bfd, or is weak. It's also possible that we are
7727 discarding the function due to a linker script /DISCARD/,
7728 which we test for via the output_section. */
7729 if (sym_sec->owner != ibfd
7730 || sym_sec->output_section == bfd_abs_section_ptr)
7734 if (rel + 1 == relend
7735 || (rel + 2 < relend
7736 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7741 if (sec->size == offset + 24)
7746 if (sec->size == offset + 16)
7753 else if (rel + 1 < relend
7754 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7755 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7757 if (rel[0].r_offset == offset + 16)
7759 else if (rel[0].r_offset != offset + 24)
7766 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7768 if (!broken && (need_edit || add_aux_fields))
7770 Elf_Internal_Rela *write_rel;
7771 Elf_Internal_Shdr *rel_hdr;
7772 bfd_byte *rptr, *wptr;
7773 bfd_byte *new_contents;
7776 new_contents = NULL;
7777 amt = OPD_NDX (sec->size) * sizeof (long);
7778 opd = &ppc64_elf_section_data (sec)->u.opd;
7779 opd->adjust = bfd_zalloc (sec->owner, amt);
7780 if (opd->adjust == NULL)
7782 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7784 /* This seems a waste of time as input .opd sections are all
7785 zeros as generated by gcc, but I suppose there's no reason
7786 this will always be so. We might start putting something in
7787 the third word of .opd entries. */
7788 if ((sec->flags & SEC_IN_MEMORY) == 0)
7791 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7796 if (local_syms != NULL
7797 && symtab_hdr->contents != (unsigned char *) local_syms)
7799 if (elf_section_data (sec)->relocs != relstart)
7803 sec->contents = loc;
7804 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7807 elf_section_data (sec)->relocs = relstart;
7809 new_contents = sec->contents;
7812 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7813 if (new_contents == NULL)
7817 wptr = new_contents;
7818 rptr = sec->contents;
7819 write_rel = relstart;
7820 for (rel = relstart; rel < relend; )
7822 unsigned long r_symndx;
7824 struct elf_link_hash_entry *h;
7825 struct ppc_link_hash_entry *fdh = NULL;
7826 Elf_Internal_Sym *sym;
7828 Elf_Internal_Rela *next_rel;
7831 r_symndx = ELF64_R_SYM (rel->r_info);
7832 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7837 if (next_rel + 1 == relend
7838 || (next_rel + 2 < relend
7839 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7842 /* See if the .opd entry is full 24 byte or
7843 16 byte (with fd_aux entry overlapped with next
7846 if (next_rel == relend)
7848 if (sec->size == rel->r_offset + 16)
7851 else if (next_rel->r_offset == rel->r_offset + 16)
7855 && h->root.root.string[0] == '.')
7857 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7859 && fdh->elf.root.type != bfd_link_hash_defined
7860 && fdh->elf.root.type != bfd_link_hash_defweak)
7864 skip = (sym_sec->owner != ibfd
7865 || sym_sec->output_section == bfd_abs_section_ptr);
7868 if (fdh != NULL && sym_sec->owner == ibfd)
7870 /* Arrange for the function descriptor sym
7872 fdh->elf.root.u.def.value = 0;
7873 fdh->elf.root.u.def.section = sym_sec;
7875 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
7877 if (NO_OPD_RELOCS || info->relocatable)
7882 if (!dec_dynrel_count (rel->r_info, sec, info,
7886 if (++rel == next_rel)
7889 r_symndx = ELF64_R_SYM (rel->r_info);
7890 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7897 /* We'll be keeping this opd entry. */
7902 /* Redefine the function descriptor symbol to
7903 this location in the opd section. It is
7904 necessary to update the value here rather
7905 than using an array of adjustments as we do
7906 for local symbols, because various places
7907 in the generic ELF code use the value
7908 stored in u.def.value. */
7909 fdh->elf.root.u.def.value = wptr - new_contents;
7910 fdh->adjust_done = 1;
7913 /* Local syms are a bit tricky. We could
7914 tweak them as they can be cached, but
7915 we'd need to look through the local syms
7916 for the function descriptor sym which we
7917 don't have at the moment. So keep an
7918 array of adjustments. */
7919 adjust = (wptr - new_contents) - (rptr - sec->contents);
7920 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
7923 memcpy (wptr, rptr, opd_ent_size);
7924 wptr += opd_ent_size;
7925 if (add_aux_fields && opd_ent_size == 16)
7927 memset (wptr, '\0', 8);
7931 /* We need to adjust any reloc offsets to point to the
7933 for ( ; rel != next_rel; ++rel)
7935 rel->r_offset += adjust;
7936 if (write_rel != rel)
7937 memcpy (write_rel, rel, sizeof (*rel));
7942 rptr += opd_ent_size;
7945 sec->size = wptr - new_contents;
7946 sec->reloc_count = write_rel - relstart;
7949 free (sec->contents);
7950 sec->contents = new_contents;
7953 /* Fudge the header size too, as this is used later in
7954 elf_bfd_final_link if we are emitting relocs. */
7955 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7956 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7959 else if (elf_section_data (sec)->relocs != relstart)
7962 if (local_syms != NULL
7963 && symtab_hdr->contents != (unsigned char *) local_syms)
7965 if (!info->keep_memory)
7968 symtab_hdr->contents = (unsigned char *) local_syms;
7973 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7975 /* If we are doing a final link and the last .opd entry is just 16 byte
7976 long, add a 8 byte padding after it. */
7977 if (need_pad != NULL && !info->relocatable)
7981 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7983 BFD_ASSERT (need_pad->size > 0);
7985 p = bfd_malloc (need_pad->size + 8);
7989 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7990 p, 0, need_pad->size))
7993 need_pad->contents = p;
7994 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7998 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8002 need_pad->contents = p;
8005 memset (need_pad->contents + need_pad->size, 0, 8);
8006 need_pad->size += 8;
8012 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8015 ppc64_elf_tls_setup (struct bfd_link_info *info)
8017 struct ppc_link_hash_table *htab;
8019 htab = ppc_hash_table (info);
8023 if (abiversion (info->output_bfd) == 1)
8026 if (htab->params->no_multi_toc)
8027 htab->do_multi_toc = 0;
8028 else if (!htab->do_multi_toc)
8029 htab->params->no_multi_toc = 1;
8031 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8032 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8033 FALSE, FALSE, TRUE));
8034 /* Move dynamic linking info to the function descriptor sym. */
8035 if (htab->tls_get_addr != NULL)
8036 func_desc_adjust (&htab->tls_get_addr->elf, info);
8037 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8038 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8039 FALSE, FALSE, TRUE));
8040 if (!htab->params->no_tls_get_addr_opt)
8042 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8044 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8045 FALSE, FALSE, TRUE);
8047 func_desc_adjust (opt, info);
8048 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8049 FALSE, FALSE, TRUE);
8051 && (opt_fd->root.type == bfd_link_hash_defined
8052 || opt_fd->root.type == bfd_link_hash_defweak))
8054 /* If glibc supports an optimized __tls_get_addr call stub,
8055 signalled by the presence of __tls_get_addr_opt, and we'll
8056 be calling __tls_get_addr via a plt call stub, then
8057 make __tls_get_addr point to __tls_get_addr_opt. */
8058 tga_fd = &htab->tls_get_addr_fd->elf;
8059 if (htab->elf.dynamic_sections_created
8061 && (tga_fd->type == STT_FUNC
8062 || tga_fd->needs_plt)
8063 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8064 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8065 && tga_fd->root.type == bfd_link_hash_undefweak)))
8067 struct plt_entry *ent;
8069 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8070 if (ent->plt.refcount > 0)
8074 tga_fd->root.type = bfd_link_hash_indirect;
8075 tga_fd->root.u.i.link = &opt_fd->root;
8076 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8077 if (opt_fd->dynindx != -1)
8079 /* Use __tls_get_addr_opt in dynamic relocations. */
8080 opt_fd->dynindx = -1;
8081 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8082 opt_fd->dynstr_index);
8083 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8086 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8087 tga = &htab->tls_get_addr->elf;
8088 if (opt != NULL && tga != NULL)
8090 tga->root.type = bfd_link_hash_indirect;
8091 tga->root.u.i.link = &opt->root;
8092 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8093 _bfd_elf_link_hash_hide_symbol (info, opt,
8095 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8097 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8098 htab->tls_get_addr_fd->is_func_descriptor = 1;
8099 if (htab->tls_get_addr != NULL)
8101 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8102 htab->tls_get_addr->is_func = 1;
8108 htab->params->no_tls_get_addr_opt = TRUE;
8110 return _bfd_elf_tls_setup (info->output_bfd, info);
8113 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8117 branch_reloc_hash_match (const bfd *ibfd,
8118 const Elf_Internal_Rela *rel,
8119 const struct ppc_link_hash_entry *hash1,
8120 const struct ppc_link_hash_entry *hash2)
8122 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8123 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8124 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8126 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8128 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8129 struct elf_link_hash_entry *h;
8131 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8132 h = elf_follow_link (h);
8133 if (h == &hash1->elf || h == &hash2->elf)
8139 /* Run through all the TLS relocs looking for optimization
8140 opportunities. The linker has been hacked (see ppc64elf.em) to do
8141 a preliminary section layout so that we know the TLS segment
8142 offsets. We can't optimize earlier because some optimizations need
8143 to know the tp offset, and we need to optimize before allocating
8144 dynamic relocations. */
8147 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8151 struct ppc_link_hash_table *htab;
8152 unsigned char *toc_ref;
8155 if (info->relocatable || !info->executable)
8158 htab = ppc_hash_table (info);
8162 /* Make two passes over the relocs. On the first pass, mark toc
8163 entries involved with tls relocs, and check that tls relocs
8164 involved in setting up a tls_get_addr call are indeed followed by
8165 such a call. If they are not, we can't do any tls optimization.
8166 On the second pass twiddle tls_mask flags to notify
8167 relocate_section that optimization can be done, and adjust got
8168 and plt refcounts. */
8170 for (pass = 0; pass < 2; ++pass)
8171 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8173 Elf_Internal_Sym *locsyms = NULL;
8174 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8176 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8177 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8179 Elf_Internal_Rela *relstart, *rel, *relend;
8180 bfd_boolean found_tls_get_addr_arg = 0;
8182 /* Read the relocations. */
8183 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8185 if (relstart == NULL)
8191 relend = relstart + sec->reloc_count;
8192 for (rel = relstart; rel < relend; rel++)
8194 enum elf_ppc64_reloc_type r_type;
8195 unsigned long r_symndx;
8196 struct elf_link_hash_entry *h;
8197 Elf_Internal_Sym *sym;
8199 unsigned char *tls_mask;
8200 unsigned char tls_set, tls_clear, tls_type = 0;
8202 bfd_boolean ok_tprel, is_local;
8203 long toc_ref_index = 0;
8204 int expecting_tls_get_addr = 0;
8205 bfd_boolean ret = FALSE;
8207 r_symndx = ELF64_R_SYM (rel->r_info);
8208 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8212 if (elf_section_data (sec)->relocs != relstart)
8214 if (toc_ref != NULL)
8217 && (elf_symtab_hdr (ibfd).contents
8218 != (unsigned char *) locsyms))
8225 if (h->root.type == bfd_link_hash_defined
8226 || h->root.type == bfd_link_hash_defweak)
8227 value = h->root.u.def.value;
8228 else if (h->root.type == bfd_link_hash_undefweak)
8232 found_tls_get_addr_arg = 0;
8237 /* Symbols referenced by TLS relocs must be of type
8238 STT_TLS. So no need for .opd local sym adjust. */
8239 value = sym->st_value;
8248 && h->root.type == bfd_link_hash_undefweak)
8252 value += sym_sec->output_offset;
8253 value += sym_sec->output_section->vma;
8254 value -= htab->elf.tls_sec->vma;
8255 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8256 < (bfd_vma) 1 << 32);
8260 r_type = ELF64_R_TYPE (rel->r_info);
8261 /* If this section has old-style __tls_get_addr calls
8262 without marker relocs, then check that each
8263 __tls_get_addr call reloc is preceded by a reloc
8264 that conceivably belongs to the __tls_get_addr arg
8265 setup insn. If we don't find matching arg setup
8266 relocs, don't do any tls optimization. */
8268 && sec->has_tls_get_addr_call
8270 && (h == &htab->tls_get_addr->elf
8271 || h == &htab->tls_get_addr_fd->elf)
8272 && !found_tls_get_addr_arg
8273 && is_branch_reloc (r_type))
8275 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8276 "TLS optimization disabled\n"),
8277 ibfd, sec, rel->r_offset);
8282 found_tls_get_addr_arg = 0;
8285 case R_PPC64_GOT_TLSLD16:
8286 case R_PPC64_GOT_TLSLD16_LO:
8287 expecting_tls_get_addr = 1;
8288 found_tls_get_addr_arg = 1;
8291 case R_PPC64_GOT_TLSLD16_HI:
8292 case R_PPC64_GOT_TLSLD16_HA:
8293 /* These relocs should never be against a symbol
8294 defined in a shared lib. Leave them alone if
8295 that turns out to be the case. */
8302 tls_type = TLS_TLS | TLS_LD;
8305 case R_PPC64_GOT_TLSGD16:
8306 case R_PPC64_GOT_TLSGD16_LO:
8307 expecting_tls_get_addr = 1;
8308 found_tls_get_addr_arg = 1;
8311 case R_PPC64_GOT_TLSGD16_HI:
8312 case R_PPC64_GOT_TLSGD16_HA:
8318 tls_set = TLS_TLS | TLS_TPRELGD;
8320 tls_type = TLS_TLS | TLS_GD;
8323 case R_PPC64_GOT_TPREL16_DS:
8324 case R_PPC64_GOT_TPREL16_LO_DS:
8325 case R_PPC64_GOT_TPREL16_HI:
8326 case R_PPC64_GOT_TPREL16_HA:
8331 tls_clear = TLS_TPREL;
8332 tls_type = TLS_TLS | TLS_TPREL;
8339 found_tls_get_addr_arg = 1;
8344 case R_PPC64_TOC16_LO:
8345 if (sym_sec == NULL || sym_sec != toc)
8348 /* Mark this toc entry as referenced by a TLS
8349 code sequence. We can do that now in the
8350 case of R_PPC64_TLS, and after checking for
8351 tls_get_addr for the TOC16 relocs. */
8352 if (toc_ref == NULL)
8353 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8354 if (toc_ref == NULL)
8358 value = h->root.u.def.value;
8360 value = sym->st_value;
8361 value += rel->r_addend;
8364 BFD_ASSERT (value < toc->size
8365 && toc->output_offset % 8 == 0);
8366 toc_ref_index = (value + toc->output_offset) / 8;
8367 if (r_type == R_PPC64_TLS
8368 || r_type == R_PPC64_TLSGD
8369 || r_type == R_PPC64_TLSLD)
8371 toc_ref[toc_ref_index] = 1;
8375 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8380 expecting_tls_get_addr = 2;
8383 case R_PPC64_TPREL64:
8387 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8392 tls_set = TLS_EXPLICIT;
8393 tls_clear = TLS_TPREL;
8398 case R_PPC64_DTPMOD64:
8402 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8404 if (rel + 1 < relend
8406 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8407 && rel[1].r_offset == rel->r_offset + 8)
8411 tls_set = TLS_EXPLICIT | TLS_GD;
8414 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8423 tls_set = TLS_EXPLICIT;
8434 if (!expecting_tls_get_addr
8435 || !sec->has_tls_get_addr_call)
8438 if (rel + 1 < relend
8439 && branch_reloc_hash_match (ibfd, rel + 1,
8441 htab->tls_get_addr_fd))
8443 if (expecting_tls_get_addr == 2)
8445 /* Check for toc tls entries. */
8446 unsigned char *toc_tls;
8449 retval = get_tls_mask (&toc_tls, NULL, NULL,
8454 if (toc_tls != NULL)
8456 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8457 found_tls_get_addr_arg = 1;
8459 toc_ref[toc_ref_index] = 1;
8465 if (expecting_tls_get_addr != 1)
8468 /* Uh oh, we didn't find the expected call. We
8469 could just mark this symbol to exclude it
8470 from tls optimization but it's safer to skip
8471 the entire optimization. */
8472 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8473 "TLS optimization disabled\n"),
8474 ibfd, sec, rel->r_offset);
8479 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8481 struct plt_entry *ent;
8482 for (ent = htab->tls_get_addr->elf.plt.plist;
8485 if (ent->addend == 0)
8487 if (ent->plt.refcount > 0)
8489 ent->plt.refcount -= 1;
8490 expecting_tls_get_addr = 0;
8496 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8498 struct plt_entry *ent;
8499 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8502 if (ent->addend == 0)
8504 if (ent->plt.refcount > 0)
8505 ent->plt.refcount -= 1;
8513 if ((tls_set & TLS_EXPLICIT) == 0)
8515 struct got_entry *ent;
8517 /* Adjust got entry for this reloc. */
8521 ent = elf_local_got_ents (ibfd)[r_symndx];
8523 for (; ent != NULL; ent = ent->next)
8524 if (ent->addend == rel->r_addend
8525 && ent->owner == ibfd
8526 && ent->tls_type == tls_type)
8533 /* We managed to get rid of a got entry. */
8534 if (ent->got.refcount > 0)
8535 ent->got.refcount -= 1;
8540 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8541 we'll lose one or two dyn relocs. */
8542 if (!dec_dynrel_count (rel->r_info, sec, info,
8546 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8548 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8554 *tls_mask |= tls_set;
8555 *tls_mask &= ~tls_clear;
8558 if (elf_section_data (sec)->relocs != relstart)
8563 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8565 if (!info->keep_memory)
8568 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8572 if (toc_ref != NULL)
8577 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8578 the values of any global symbols in a toc section that has been
8579 edited. Globals in toc sections should be a rarity, so this function
8580 sets a flag if any are found in toc sections other than the one just
8581 edited, so that futher hash table traversals can be avoided. */
8583 struct adjust_toc_info
8586 unsigned long *skip;
8587 bfd_boolean global_toc_syms;
8590 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8593 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8595 struct ppc_link_hash_entry *eh;
8596 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8599 if (h->root.type != bfd_link_hash_defined
8600 && h->root.type != bfd_link_hash_defweak)
8603 eh = (struct ppc_link_hash_entry *) h;
8604 if (eh->adjust_done)
8607 if (eh->elf.root.u.def.section == toc_inf->toc)
8609 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8610 i = toc_inf->toc->rawsize >> 3;
8612 i = eh->elf.root.u.def.value >> 3;
8614 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8616 (*_bfd_error_handler)
8617 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8620 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8621 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8624 eh->elf.root.u.def.value -= toc_inf->skip[i];
8625 eh->adjust_done = 1;
8627 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8628 toc_inf->global_toc_syms = TRUE;
8633 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8636 ok_lo_toc_insn (unsigned int insn)
8638 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8639 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8640 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8641 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8642 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8643 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8644 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8645 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8646 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8647 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8648 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8649 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8650 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8651 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8652 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8654 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8655 && ((insn & 3) == 0 || (insn & 3) == 3))
8656 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8659 /* Examine all relocs referencing .toc sections in order to remove
8660 unused .toc entries. */
8663 ppc64_elf_edit_toc (struct bfd_link_info *info)
8666 struct adjust_toc_info toc_inf;
8667 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8669 htab->do_toc_opt = 1;
8670 toc_inf.global_toc_syms = TRUE;
8671 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8673 asection *toc, *sec;
8674 Elf_Internal_Shdr *symtab_hdr;
8675 Elf_Internal_Sym *local_syms;
8676 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8677 unsigned long *skip, *drop;
8678 unsigned char *used;
8679 unsigned char *keep, last, some_unused;
8681 if (!is_ppc64_elf (ibfd))
8684 toc = bfd_get_section_by_name (ibfd, ".toc");
8687 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8688 || discarded_section (toc))
8693 symtab_hdr = &elf_symtab_hdr (ibfd);
8695 /* Look at sections dropped from the final link. */
8698 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8700 if (sec->reloc_count == 0
8701 || !discarded_section (sec)
8702 || get_opd_info (sec)
8703 || (sec->flags & SEC_ALLOC) == 0
8704 || (sec->flags & SEC_DEBUGGING) != 0)
8707 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8708 if (relstart == NULL)
8711 /* Run through the relocs to see which toc entries might be
8713 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8715 enum elf_ppc64_reloc_type r_type;
8716 unsigned long r_symndx;
8718 struct elf_link_hash_entry *h;
8719 Elf_Internal_Sym *sym;
8722 r_type = ELF64_R_TYPE (rel->r_info);
8729 case R_PPC64_TOC16_LO:
8730 case R_PPC64_TOC16_HI:
8731 case R_PPC64_TOC16_HA:
8732 case R_PPC64_TOC16_DS:
8733 case R_PPC64_TOC16_LO_DS:
8737 r_symndx = ELF64_R_SYM (rel->r_info);
8738 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8746 val = h->root.u.def.value;
8748 val = sym->st_value;
8749 val += rel->r_addend;
8751 if (val >= toc->size)
8754 /* Anything in the toc ought to be aligned to 8 bytes.
8755 If not, don't mark as unused. */
8761 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8766 skip[val >> 3] = ref_from_discarded;
8769 if (elf_section_data (sec)->relocs != relstart)
8773 /* For largetoc loads of address constants, we can convert
8774 . addis rx,2,addr@got@ha
8775 . ld ry,addr@got@l(rx)
8777 . addis rx,2,addr@toc@ha
8778 . addi ry,rx,addr@toc@l
8779 when addr is within 2G of the toc pointer. This then means
8780 that the word storing "addr" in the toc is no longer needed. */
8782 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8783 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8784 && toc->reloc_count != 0)
8786 /* Read toc relocs. */
8787 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8789 if (toc_relocs == NULL)
8792 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8794 enum elf_ppc64_reloc_type r_type;
8795 unsigned long r_symndx;
8797 struct elf_link_hash_entry *h;
8798 Elf_Internal_Sym *sym;
8801 r_type = ELF64_R_TYPE (rel->r_info);
8802 if (r_type != R_PPC64_ADDR64)
8805 r_symndx = ELF64_R_SYM (rel->r_info);
8806 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8811 || discarded_section (sym_sec))
8814 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8819 if (h->type == STT_GNU_IFUNC)
8821 val = h->root.u.def.value;
8825 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8827 val = sym->st_value;
8829 val += rel->r_addend;
8830 val += sym_sec->output_section->vma + sym_sec->output_offset;
8832 /* We don't yet know the exact toc pointer value, but we
8833 know it will be somewhere in the toc section. Don't
8834 optimize if the difference from any possible toc
8835 pointer is outside [ff..f80008000, 7fff7fff]. */
8836 addr = toc->output_section->vma + TOC_BASE_OFF;
8837 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8840 addr = toc->output_section->vma + toc->output_section->rawsize;
8841 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8846 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8851 skip[rel->r_offset >> 3]
8852 |= can_optimize | ((rel - toc_relocs) << 2);
8859 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8863 if (local_syms != NULL
8864 && symtab_hdr->contents != (unsigned char *) local_syms)
8868 && elf_section_data (sec)->relocs != relstart)
8870 if (toc_relocs != NULL
8871 && elf_section_data (toc)->relocs != toc_relocs)
8878 /* Now check all kept sections that might reference the toc.
8879 Check the toc itself last. */
8880 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8883 sec = (sec == toc ? NULL
8884 : sec->next == NULL ? toc
8885 : sec->next == toc && toc->next ? toc->next
8890 if (sec->reloc_count == 0
8891 || discarded_section (sec)
8892 || get_opd_info (sec)
8893 || (sec->flags & SEC_ALLOC) == 0
8894 || (sec->flags & SEC_DEBUGGING) != 0)
8897 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8899 if (relstart == NULL)
8905 /* Mark toc entries referenced as used. */
8909 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8911 enum elf_ppc64_reloc_type r_type;
8912 unsigned long r_symndx;
8914 struct elf_link_hash_entry *h;
8915 Elf_Internal_Sym *sym;
8917 enum {no_check, check_lo, check_ha} insn_check;
8919 r_type = ELF64_R_TYPE (rel->r_info);
8923 insn_check = no_check;
8926 case R_PPC64_GOT_TLSLD16_HA:
8927 case R_PPC64_GOT_TLSGD16_HA:
8928 case R_PPC64_GOT_TPREL16_HA:
8929 case R_PPC64_GOT_DTPREL16_HA:
8930 case R_PPC64_GOT16_HA:
8931 case R_PPC64_TOC16_HA:
8932 insn_check = check_ha;
8935 case R_PPC64_GOT_TLSLD16_LO:
8936 case R_PPC64_GOT_TLSGD16_LO:
8937 case R_PPC64_GOT_TPREL16_LO_DS:
8938 case R_PPC64_GOT_DTPREL16_LO_DS:
8939 case R_PPC64_GOT16_LO:
8940 case R_PPC64_GOT16_LO_DS:
8941 case R_PPC64_TOC16_LO:
8942 case R_PPC64_TOC16_LO_DS:
8943 insn_check = check_lo;
8947 if (insn_check != no_check)
8949 bfd_vma off = rel->r_offset & ~3;
8950 unsigned char buf[4];
8953 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8958 insn = bfd_get_32 (ibfd, buf);
8959 if (insn_check == check_lo
8960 ? !ok_lo_toc_insn (insn)
8961 : ((insn & ((0x3f << 26) | 0x1f << 16))
8962 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8966 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8967 sprintf (str, "%#08x", insn);
8968 info->callbacks->einfo
8969 (_("%P: %H: toc optimization is not supported for"
8970 " %s instruction.\n"),
8971 ibfd, sec, rel->r_offset & ~3, str);
8978 case R_PPC64_TOC16_LO:
8979 case R_PPC64_TOC16_HI:
8980 case R_PPC64_TOC16_HA:
8981 case R_PPC64_TOC16_DS:
8982 case R_PPC64_TOC16_LO_DS:
8983 /* In case we're taking addresses of toc entries. */
8984 case R_PPC64_ADDR64:
8991 r_symndx = ELF64_R_SYM (rel->r_info);
8992 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9003 val = h->root.u.def.value;
9005 val = sym->st_value;
9006 val += rel->r_addend;
9008 if (val >= toc->size)
9011 if ((skip[val >> 3] & can_optimize) != 0)
9018 case R_PPC64_TOC16_HA:
9021 case R_PPC64_TOC16_LO_DS:
9022 off = rel->r_offset;
9023 off += (bfd_big_endian (ibfd) ? -2 : 3);
9024 if (!bfd_get_section_contents (ibfd, sec, &opc,
9030 if ((opc & (0x3f << 2)) == (58u << 2))
9035 /* Wrong sort of reloc, or not a ld. We may
9036 as well clear ref_from_discarded too. */
9043 /* For the toc section, we only mark as used if this
9044 entry itself isn't unused. */
9045 else if ((used[rel->r_offset >> 3]
9046 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9049 /* Do all the relocs again, to catch reference
9058 if (elf_section_data (sec)->relocs != relstart)
9062 /* Merge the used and skip arrays. Assume that TOC
9063 doublewords not appearing as either used or unused belong
9064 to to an entry more than one doubleword in size. */
9065 for (drop = skip, keep = used, last = 0, some_unused = 0;
9066 drop < skip + (toc->size + 7) / 8;
9071 *drop &= ~ref_from_discarded;
9072 if ((*drop & can_optimize) != 0)
9076 else if ((*drop & ref_from_discarded) != 0)
9079 last = ref_from_discarded;
9089 bfd_byte *contents, *src;
9091 Elf_Internal_Sym *sym;
9092 bfd_boolean local_toc_syms = FALSE;
9094 /* Shuffle the toc contents, and at the same time convert the
9095 skip array from booleans into offsets. */
9096 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9099 elf_section_data (toc)->this_hdr.contents = contents;
9101 for (src = contents, off = 0, drop = skip;
9102 src < contents + toc->size;
9105 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9110 memcpy (src - off, src, 8);
9114 toc->rawsize = toc->size;
9115 toc->size = src - contents - off;
9117 /* Adjust addends for relocs against the toc section sym,
9118 and optimize any accesses we can. */
9119 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9121 if (sec->reloc_count == 0
9122 || discarded_section (sec))
9125 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9127 if (relstart == NULL)
9130 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9132 enum elf_ppc64_reloc_type r_type;
9133 unsigned long r_symndx;
9135 struct elf_link_hash_entry *h;
9138 r_type = ELF64_R_TYPE (rel->r_info);
9145 case R_PPC64_TOC16_LO:
9146 case R_PPC64_TOC16_HI:
9147 case R_PPC64_TOC16_HA:
9148 case R_PPC64_TOC16_DS:
9149 case R_PPC64_TOC16_LO_DS:
9150 case R_PPC64_ADDR64:
9154 r_symndx = ELF64_R_SYM (rel->r_info);
9155 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9163 val = h->root.u.def.value;
9166 val = sym->st_value;
9168 local_toc_syms = TRUE;
9171 val += rel->r_addend;
9173 if (val > toc->rawsize)
9175 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9177 else if ((skip[val >> 3] & can_optimize) != 0)
9179 Elf_Internal_Rela *tocrel
9180 = toc_relocs + (skip[val >> 3] >> 2);
9181 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9185 case R_PPC64_TOC16_HA:
9186 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9189 case R_PPC64_TOC16_LO_DS:
9190 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9194 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9196 info->callbacks->einfo
9197 (_("%P: %H: %s references "
9198 "optimized away TOC entry\n"),
9199 ibfd, sec, rel->r_offset,
9200 ppc64_elf_howto_table[r_type]->name);
9201 bfd_set_error (bfd_error_bad_value);
9204 rel->r_addend = tocrel->r_addend;
9205 elf_section_data (sec)->relocs = relstart;
9209 if (h != NULL || sym->st_value != 0)
9212 rel->r_addend -= skip[val >> 3];
9213 elf_section_data (sec)->relocs = relstart;
9216 if (elf_section_data (sec)->relocs != relstart)
9220 /* We shouldn't have local or global symbols defined in the TOC,
9221 but handle them anyway. */
9222 if (local_syms != NULL)
9223 for (sym = local_syms;
9224 sym < local_syms + symtab_hdr->sh_info;
9226 if (sym->st_value != 0
9227 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9231 if (sym->st_value > toc->rawsize)
9232 i = toc->rawsize >> 3;
9234 i = sym->st_value >> 3;
9236 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9239 (*_bfd_error_handler)
9240 (_("%s defined on removed toc entry"),
9241 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9244 while ((skip[i] & (ref_from_discarded | can_optimize)));
9245 sym->st_value = (bfd_vma) i << 3;
9248 sym->st_value -= skip[i];
9249 symtab_hdr->contents = (unsigned char *) local_syms;
9252 /* Adjust any global syms defined in this toc input section. */
9253 if (toc_inf.global_toc_syms)
9256 toc_inf.skip = skip;
9257 toc_inf.global_toc_syms = FALSE;
9258 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9262 if (toc->reloc_count != 0)
9264 Elf_Internal_Shdr *rel_hdr;
9265 Elf_Internal_Rela *wrel;
9268 /* Remove unused toc relocs, and adjust those we keep. */
9269 if (toc_relocs == NULL)
9270 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9272 if (toc_relocs == NULL)
9276 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9277 if ((skip[rel->r_offset >> 3]
9278 & (ref_from_discarded | can_optimize)) == 0)
9280 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9281 wrel->r_info = rel->r_info;
9282 wrel->r_addend = rel->r_addend;
9285 else if (!dec_dynrel_count (rel->r_info, toc, info,
9286 &local_syms, NULL, NULL))
9289 elf_section_data (toc)->relocs = toc_relocs;
9290 toc->reloc_count = wrel - toc_relocs;
9291 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9292 sz = rel_hdr->sh_entsize;
9293 rel_hdr->sh_size = toc->reloc_count * sz;
9296 else if (toc_relocs != NULL
9297 && elf_section_data (toc)->relocs != toc_relocs)
9300 if (local_syms != NULL
9301 && symtab_hdr->contents != (unsigned char *) local_syms)
9303 if (!info->keep_memory)
9306 symtab_hdr->contents = (unsigned char *) local_syms;
9314 /* Return true iff input section I references the TOC using
9315 instructions limited to +/-32k offsets. */
9318 ppc64_elf_has_small_toc_reloc (asection *i)
9320 return (is_ppc64_elf (i->owner)
9321 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9324 /* Allocate space for one GOT entry. */
9327 allocate_got (struct elf_link_hash_entry *h,
9328 struct bfd_link_info *info,
9329 struct got_entry *gent)
9331 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9333 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9334 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9336 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9337 ? 2 : 1) * sizeof (Elf64_External_Rela);
9338 asection *got = ppc64_elf_tdata (gent->owner)->got;
9340 gent->got.offset = got->size;
9341 got->size += entsize;
9343 dyn = htab->elf.dynamic_sections_created;
9344 if (h->type == STT_GNU_IFUNC)
9346 htab->elf.irelplt->size += rentsize;
9347 htab->got_reli_size += rentsize;
9349 else if ((info->shared
9350 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9351 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9352 || h->root.type != bfd_link_hash_undefweak))
9354 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9355 relgot->size += rentsize;
9359 /* This function merges got entries in the same toc group. */
9362 merge_got_entries (struct got_entry **pent)
9364 struct got_entry *ent, *ent2;
9366 for (ent = *pent; ent != NULL; ent = ent->next)
9367 if (!ent->is_indirect)
9368 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9369 if (!ent2->is_indirect
9370 && ent2->addend == ent->addend
9371 && ent2->tls_type == ent->tls_type
9372 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9374 ent2->is_indirect = TRUE;
9375 ent2->got.ent = ent;
9379 /* Allocate space in .plt, .got and associated reloc sections for
9383 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9385 struct bfd_link_info *info;
9386 struct ppc_link_hash_table *htab;
9388 struct ppc_link_hash_entry *eh;
9389 struct elf_dyn_relocs *p;
9390 struct got_entry **pgent, *gent;
9392 if (h->root.type == bfd_link_hash_indirect)
9395 info = (struct bfd_link_info *) inf;
9396 htab = ppc_hash_table (info);
9400 if ((htab->elf.dynamic_sections_created
9402 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9403 || h->type == STT_GNU_IFUNC)
9405 struct plt_entry *pent;
9406 bfd_boolean doneone = FALSE;
9407 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9408 if (pent->plt.refcount > 0)
9410 if (!htab->elf.dynamic_sections_created
9411 || h->dynindx == -1)
9414 pent->plt.offset = s->size;
9415 s->size += PLT_ENTRY_SIZE (htab);
9416 s = htab->elf.irelplt;
9420 /* If this is the first .plt entry, make room for the special
9424 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9426 pent->plt.offset = s->size;
9428 /* Make room for this entry. */
9429 s->size += PLT_ENTRY_SIZE (htab);
9431 /* Make room for the .glink code. */
9434 s->size += GLINK_CALL_STUB_SIZE;
9437 /* We need bigger stubs past index 32767. */
9438 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9445 /* We also need to make an entry in the .rela.plt section. */
9446 s = htab->elf.srelplt;
9448 s->size += sizeof (Elf64_External_Rela);
9452 pent->plt.offset = (bfd_vma) -1;
9455 h->plt.plist = NULL;
9461 h->plt.plist = NULL;
9465 eh = (struct ppc_link_hash_entry *) h;
9466 /* Run through the TLS GD got entries first if we're changing them
9468 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9469 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9470 if (gent->got.refcount > 0
9471 && (gent->tls_type & TLS_GD) != 0)
9473 /* This was a GD entry that has been converted to TPREL. If
9474 there happens to be a TPREL entry we can use that one. */
9475 struct got_entry *ent;
9476 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9477 if (ent->got.refcount > 0
9478 && (ent->tls_type & TLS_TPREL) != 0
9479 && ent->addend == gent->addend
9480 && ent->owner == gent->owner)
9482 gent->got.refcount = 0;
9486 /* If not, then we'll be using our own TPREL entry. */
9487 if (gent->got.refcount != 0)
9488 gent->tls_type = TLS_TLS | TLS_TPREL;
9491 /* Remove any list entry that won't generate a word in the GOT before
9492 we call merge_got_entries. Otherwise we risk merging to empty
9494 pgent = &h->got.glist;
9495 while ((gent = *pgent) != NULL)
9496 if (gent->got.refcount > 0)
9498 if ((gent->tls_type & TLS_LD) != 0
9501 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9502 *pgent = gent->next;
9505 pgent = &gent->next;
9508 *pgent = gent->next;
9510 if (!htab->do_multi_toc)
9511 merge_got_entries (&h->got.glist);
9513 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9514 if (!gent->is_indirect)
9516 /* Make sure this symbol is output as a dynamic symbol.
9517 Undefined weak syms won't yet be marked as dynamic,
9518 nor will all TLS symbols. */
9519 if (h->dynindx == -1
9521 && h->type != STT_GNU_IFUNC
9522 && htab->elf.dynamic_sections_created)
9524 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9528 if (!is_ppc64_elf (gent->owner))
9531 allocate_got (h, info, gent);
9534 if (eh->dyn_relocs == NULL
9535 || (!htab->elf.dynamic_sections_created
9536 && h->type != STT_GNU_IFUNC))
9539 /* In the shared -Bsymbolic case, discard space allocated for
9540 dynamic pc-relative relocs against symbols which turn out to be
9541 defined in regular objects. For the normal shared case, discard
9542 space for relocs that have become local due to symbol visibility
9547 /* Relocs that use pc_count are those that appear on a call insn,
9548 or certain REL relocs (see must_be_dyn_reloc) that can be
9549 generated via assembly. We want calls to protected symbols to
9550 resolve directly to the function rather than going via the plt.
9551 If people want function pointer comparisons to work as expected
9552 then they should avoid writing weird assembly. */
9553 if (SYMBOL_CALLS_LOCAL (info, h))
9555 struct elf_dyn_relocs **pp;
9557 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9559 p->count -= p->pc_count;
9568 /* Also discard relocs on undefined weak syms with non-default
9570 if (eh->dyn_relocs != NULL
9571 && h->root.type == bfd_link_hash_undefweak)
9573 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9574 eh->dyn_relocs = NULL;
9576 /* Make sure this symbol is output as a dynamic symbol.
9577 Undefined weak syms won't yet be marked as dynamic. */
9578 else if (h->dynindx == -1
9579 && !h->forced_local)
9581 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9586 else if (h->type == STT_GNU_IFUNC)
9588 if (!h->non_got_ref)
9589 eh->dyn_relocs = NULL;
9591 else if (ELIMINATE_COPY_RELOCS)
9593 /* For the non-shared case, discard space for relocs against
9594 symbols which turn out to need copy relocs or are not
9600 /* Make sure this symbol is output as a dynamic symbol.
9601 Undefined weak syms won't yet be marked as dynamic. */
9602 if (h->dynindx == -1
9603 && !h->forced_local)
9605 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9609 /* If that succeeded, we know we'll be keeping all the
9611 if (h->dynindx != -1)
9615 eh->dyn_relocs = NULL;
9620 /* Finally, allocate space. */
9621 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9623 asection *sreloc = elf_section_data (p->sec)->sreloc;
9624 if (eh->elf.type == STT_GNU_IFUNC)
9625 sreloc = htab->elf.irelplt;
9626 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9632 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9633 to set up space for global entry stubs. These are put in glink,
9634 after the branch table. */
9637 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9639 struct bfd_link_info *info;
9640 struct ppc_link_hash_table *htab;
9641 struct plt_entry *pent;
9644 if (h->root.type == bfd_link_hash_indirect)
9647 if (!h->pointer_equality_needed)
9654 htab = ppc_hash_table (info);
9659 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9660 if (pent->plt.offset != (bfd_vma) -1
9661 && pent->addend == 0)
9663 /* For ELFv2, if this symbol is not defined in a regular file
9664 and we are not generating a shared library or pie, then we
9665 need to define the symbol in the executable on a call stub.
9666 This is to avoid text relocations. */
9667 s->size = (s->size + 15) & -16;
9668 h->root.u.def.section = s;
9669 h->root.u.def.value = s->size;
9676 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9677 read-only sections. */
9680 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9682 if (h->root.type == bfd_link_hash_indirect)
9685 if (readonly_dynrelocs (h))
9687 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9689 /* Not an error, just cut short the traversal. */
9695 /* Set the sizes of the dynamic sections. */
9698 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9699 struct bfd_link_info *info)
9701 struct ppc_link_hash_table *htab;
9706 struct got_entry *first_tlsld;
9708 htab = ppc_hash_table (info);
9712 dynobj = htab->elf.dynobj;
9716 if (htab->elf.dynamic_sections_created)
9718 /* Set the contents of the .interp section to the interpreter. */
9719 if (info->executable)
9721 s = bfd_get_linker_section (dynobj, ".interp");
9724 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9725 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9729 /* Set up .got offsets for local syms, and space for local dynamic
9731 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9733 struct got_entry **lgot_ents;
9734 struct got_entry **end_lgot_ents;
9735 struct plt_entry **local_plt;
9736 struct plt_entry **end_local_plt;
9737 unsigned char *lgot_masks;
9738 bfd_size_type locsymcount;
9739 Elf_Internal_Shdr *symtab_hdr;
9741 if (!is_ppc64_elf (ibfd))
9744 for (s = ibfd->sections; s != NULL; s = s->next)
9746 struct ppc_dyn_relocs *p;
9748 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9750 if (!bfd_is_abs_section (p->sec)
9751 && bfd_is_abs_section (p->sec->output_section))
9753 /* Input section has been discarded, either because
9754 it is a copy of a linkonce section or due to
9755 linker script /DISCARD/, so we'll be discarding
9758 else if (p->count != 0)
9760 asection *srel = elf_section_data (p->sec)->sreloc;
9762 srel = htab->elf.irelplt;
9763 srel->size += p->count * sizeof (Elf64_External_Rela);
9764 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9765 info->flags |= DF_TEXTREL;
9770 lgot_ents = elf_local_got_ents (ibfd);
9774 symtab_hdr = &elf_symtab_hdr (ibfd);
9775 locsymcount = symtab_hdr->sh_info;
9776 end_lgot_ents = lgot_ents + locsymcount;
9777 local_plt = (struct plt_entry **) end_lgot_ents;
9778 end_local_plt = local_plt + locsymcount;
9779 lgot_masks = (unsigned char *) end_local_plt;
9780 s = ppc64_elf_tdata (ibfd)->got;
9781 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9783 struct got_entry **pent, *ent;
9786 while ((ent = *pent) != NULL)
9787 if (ent->got.refcount > 0)
9789 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9791 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9796 unsigned int ent_size = 8;
9797 unsigned int rel_size = sizeof (Elf64_External_Rela);
9799 ent->got.offset = s->size;
9800 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9805 s->size += ent_size;
9806 if ((*lgot_masks & PLT_IFUNC) != 0)
9808 htab->elf.irelplt->size += rel_size;
9809 htab->got_reli_size += rel_size;
9811 else if (info->shared)
9813 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9814 srel->size += rel_size;
9823 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9824 for (; local_plt < end_local_plt; ++local_plt)
9826 struct plt_entry *ent;
9828 for (ent = *local_plt; ent != NULL; ent = ent->next)
9829 if (ent->plt.refcount > 0)
9832 ent->plt.offset = s->size;
9833 s->size += PLT_ENTRY_SIZE (htab);
9835 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9838 ent->plt.offset = (bfd_vma) -1;
9842 /* Allocate global sym .plt and .got entries, and space for global
9843 sym dynamic relocs. */
9844 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9845 /* Stash the end of glink branch table. */
9846 if (htab->glink != NULL)
9847 htab->glink->rawsize = htab->glink->size;
9849 if (!htab->opd_abi && !info->shared)
9850 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9853 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9855 struct got_entry *ent;
9857 if (!is_ppc64_elf (ibfd))
9860 ent = ppc64_tlsld_got (ibfd);
9861 if (ent->got.refcount > 0)
9863 if (!htab->do_multi_toc && first_tlsld != NULL)
9865 ent->is_indirect = TRUE;
9866 ent->got.ent = first_tlsld;
9870 if (first_tlsld == NULL)
9872 s = ppc64_elf_tdata (ibfd)->got;
9873 ent->got.offset = s->size;
9878 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9879 srel->size += sizeof (Elf64_External_Rela);
9884 ent->got.offset = (bfd_vma) -1;
9887 /* We now have determined the sizes of the various dynamic sections.
9888 Allocate memory for them. */
9890 for (s = dynobj->sections; s != NULL; s = s->next)
9892 if ((s->flags & SEC_LINKER_CREATED) == 0)
9895 if (s == htab->brlt || s == htab->relbrlt)
9896 /* These haven't been allocated yet; don't strip. */
9898 else if (s == htab->elf.sgot
9899 || s == htab->elf.splt
9900 || s == htab->elf.iplt
9902 || s == htab->dynbss)
9904 /* Strip this section if we don't need it; see the
9907 else if (s == htab->glink_eh_frame)
9909 if (!bfd_is_abs_section (s->output_section))
9910 /* Not sized yet. */
9913 else if (CONST_STRNEQ (s->name, ".rela"))
9917 if (s != htab->elf.srelplt)
9920 /* We use the reloc_count field as a counter if we need
9921 to copy relocs into the output file. */
9927 /* It's not one of our sections, so don't allocate space. */
9933 /* If we don't need this section, strip it from the
9934 output file. This is mostly to handle .rela.bss and
9935 .rela.plt. We must create both sections in
9936 create_dynamic_sections, because they must be created
9937 before the linker maps input sections to output
9938 sections. The linker does that before
9939 adjust_dynamic_symbol is called, and it is that
9940 function which decides whether anything needs to go
9941 into these sections. */
9942 s->flags |= SEC_EXCLUDE;
9946 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9949 /* Allocate memory for the section contents. We use bfd_zalloc
9950 here in case unused entries are not reclaimed before the
9951 section's contents are written out. This should not happen,
9952 but this way if it does we get a R_PPC64_NONE reloc in .rela
9953 sections instead of garbage.
9954 We also rely on the section contents being zero when writing
9956 s->contents = bfd_zalloc (dynobj, s->size);
9957 if (s->contents == NULL)
9961 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9963 if (!is_ppc64_elf (ibfd))
9966 s = ppc64_elf_tdata (ibfd)->got;
9967 if (s != NULL && s != htab->elf.sgot)
9970 s->flags |= SEC_EXCLUDE;
9973 s->contents = bfd_zalloc (ibfd, s->size);
9974 if (s->contents == NULL)
9978 s = ppc64_elf_tdata (ibfd)->relgot;
9982 s->flags |= SEC_EXCLUDE;
9985 s->contents = bfd_zalloc (ibfd, s->size);
9986 if (s->contents == NULL)
9994 if (htab->elf.dynamic_sections_created)
9996 bfd_boolean tls_opt;
9998 /* Add some entries to the .dynamic section. We fill in the
9999 values later, in ppc64_elf_finish_dynamic_sections, but we
10000 must add the entries now so that we get the correct size for
10001 the .dynamic section. The DT_DEBUG entry is filled in by the
10002 dynamic linker and used by the debugger. */
10003 #define add_dynamic_entry(TAG, VAL) \
10004 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10006 if (info->executable)
10008 if (!add_dynamic_entry (DT_DEBUG, 0))
10012 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10014 if (!add_dynamic_entry (DT_PLTGOT, 0)
10015 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10016 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10017 || !add_dynamic_entry (DT_JMPREL, 0)
10018 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10022 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10024 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10025 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10029 tls_opt = (!htab->params->no_tls_get_addr_opt
10030 && htab->tls_get_addr_fd != NULL
10031 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10032 if (tls_opt || !htab->opd_abi)
10034 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10040 if (!add_dynamic_entry (DT_RELA, 0)
10041 || !add_dynamic_entry (DT_RELASZ, 0)
10042 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10045 /* If any dynamic relocs apply to a read-only section,
10046 then we need a DT_TEXTREL entry. */
10047 if ((info->flags & DF_TEXTREL) == 0)
10048 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10050 if ((info->flags & DF_TEXTREL) != 0)
10052 if (!add_dynamic_entry (DT_TEXTREL, 0))
10057 #undef add_dynamic_entry
10062 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10065 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10067 if (h->plt.plist != NULL
10069 && !h->pointer_equality_needed)
10072 return _bfd_elf_hash_symbol (h);
10075 /* Determine the type of stub needed, if any, for a call. */
10077 static inline enum ppc_stub_type
10078 ppc_type_of_stub (asection *input_sec,
10079 const Elf_Internal_Rela *rel,
10080 struct ppc_link_hash_entry **hash,
10081 struct plt_entry **plt_ent,
10082 bfd_vma destination,
10083 unsigned long local_off)
10085 struct ppc_link_hash_entry *h = *hash;
10087 bfd_vma branch_offset;
10088 bfd_vma max_branch_offset;
10089 enum elf_ppc64_reloc_type r_type;
10093 struct plt_entry *ent;
10094 struct ppc_link_hash_entry *fdh = h;
10096 && h->oh->is_func_descriptor)
10098 fdh = ppc_follow_link (h->oh);
10102 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10103 if (ent->addend == rel->r_addend
10104 && ent->plt.offset != (bfd_vma) -1)
10107 return ppc_stub_plt_call;
10110 /* Here, we know we don't have a plt entry. If we don't have a
10111 either a defined function descriptor or a defined entry symbol
10112 in a regular object file, then it is pointless trying to make
10113 any other type of stub. */
10114 if (!is_static_defined (&fdh->elf)
10115 && !is_static_defined (&h->elf))
10116 return ppc_stub_none;
10118 else if (elf_local_got_ents (input_sec->owner) != NULL)
10120 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10121 struct plt_entry **local_plt = (struct plt_entry **)
10122 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10123 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10125 if (local_plt[r_symndx] != NULL)
10127 struct plt_entry *ent;
10129 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10130 if (ent->addend == rel->r_addend
10131 && ent->plt.offset != (bfd_vma) -1)
10134 return ppc_stub_plt_call;
10139 /* Determine where the call point is. */
10140 location = (input_sec->output_offset
10141 + input_sec->output_section->vma
10144 branch_offset = destination - location;
10145 r_type = ELF64_R_TYPE (rel->r_info);
10147 /* Determine if a long branch stub is needed. */
10148 max_branch_offset = 1 << 25;
10149 if (r_type != R_PPC64_REL24)
10150 max_branch_offset = 1 << 15;
10152 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10153 /* We need a stub. Figure out whether a long_branch or plt_branch
10154 is needed later. */
10155 return ppc_stub_long_branch;
10157 return ppc_stub_none;
10160 /* With power7 weakly ordered memory model, it is possible for ld.so
10161 to update a plt entry in one thread and have another thread see a
10162 stale zero toc entry. To avoid this we need some sort of acquire
10163 barrier in the call stub. One solution is to make the load of the
10164 toc word seem to appear to depend on the load of the function entry
10165 word. Another solution is to test for r2 being zero, and branch to
10166 the appropriate glink entry if so.
10168 . fake dep barrier compare
10169 . ld 12,xxx(2) ld 12,xxx(2)
10170 . mtctr 12 mtctr 12
10171 . xor 11,12,12 ld 2,xxx+8(2)
10172 . add 2,2,11 cmpldi 2,0
10173 . ld 2,xxx+8(2) bnectr+
10174 . bctr b <glink_entry>
10176 The solution involving the compare turns out to be faster, so
10177 that's what we use unless the branch won't reach. */
10179 #define ALWAYS_USE_FAKE_DEP 0
10180 #define ALWAYS_EMIT_R2SAVE 0
10182 #define PPC_LO(v) ((v) & 0xffff)
10183 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10184 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10186 static inline unsigned int
10187 plt_stub_size (struct ppc_link_hash_table *htab,
10188 struct ppc_stub_hash_entry *stub_entry,
10191 unsigned size = 12;
10193 if (ALWAYS_EMIT_R2SAVE
10194 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10196 if (PPC_HA (off) != 0)
10201 if (htab->params->plt_static_chain)
10203 if (htab->params->plt_thread_safe)
10205 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10208 if (stub_entry->h != NULL
10209 && (stub_entry->h == htab->tls_get_addr_fd
10210 || stub_entry->h == htab->tls_get_addr)
10211 && !htab->params->no_tls_get_addr_opt)
10216 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10217 then return the padding needed to do so. */
10218 static inline unsigned int
10219 plt_stub_pad (struct ppc_link_hash_table *htab,
10220 struct ppc_stub_hash_entry *stub_entry,
10223 int stub_align = 1 << htab->params->plt_stub_align;
10224 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10225 bfd_vma stub_off = stub_entry->stub_sec->size;
10227 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10228 > ((stub_size - 1) & -stub_align))
10229 return stub_align - (stub_off & (stub_align - 1));
10233 /* Build a .plt call stub. */
10235 static inline bfd_byte *
10236 build_plt_stub (struct ppc_link_hash_table *htab,
10237 struct ppc_stub_hash_entry *stub_entry,
10238 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10240 bfd *obfd = htab->params->stub_bfd;
10241 bfd_boolean plt_load_toc = htab->opd_abi;
10242 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10243 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10244 bfd_boolean use_fake_dep = plt_thread_safe;
10245 bfd_vma cmp_branch_off = 0;
10247 if (!ALWAYS_USE_FAKE_DEP
10250 && !(stub_entry->h != NULL
10251 && (stub_entry->h == htab->tls_get_addr_fd
10252 || stub_entry->h == htab->tls_get_addr)
10253 && !htab->params->no_tls_get_addr_opt))
10255 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10256 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10257 / PLT_ENTRY_SIZE (htab));
10258 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10261 if (pltindex > 32768)
10262 glinkoff += (pltindex - 32768) * 4;
10264 + htab->glink->output_offset
10265 + htab->glink->output_section->vma);
10266 from = (p - stub_entry->stub_sec->contents
10267 + 4 * (ALWAYS_EMIT_R2SAVE
10268 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10269 + 4 * (PPC_HA (offset) != 0)
10270 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10271 != PPC_HA (offset))
10272 + 4 * (plt_static_chain != 0)
10274 + stub_entry->stub_sec->output_offset
10275 + stub_entry->stub_sec->output_section->vma);
10276 cmp_branch_off = to - from;
10277 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10280 if (PPC_HA (offset) != 0)
10284 if (ALWAYS_EMIT_R2SAVE
10285 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10286 r[0].r_offset += 4;
10287 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10288 r[1].r_offset = r[0].r_offset + 4;
10289 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10290 r[1].r_addend = r[0].r_addend;
10293 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10295 r[2].r_offset = r[1].r_offset + 4;
10296 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10297 r[2].r_addend = r[0].r_addend;
10301 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10302 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10303 r[2].r_addend = r[0].r_addend + 8;
10304 if (plt_static_chain)
10306 r[3].r_offset = r[2].r_offset + 4;
10307 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10308 r[3].r_addend = r[0].r_addend + 16;
10313 if (ALWAYS_EMIT_R2SAVE
10314 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10315 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10318 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10319 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10323 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10324 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10327 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10329 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10332 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10337 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10338 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10340 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10341 if (plt_static_chain)
10342 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10349 if (ALWAYS_EMIT_R2SAVE
10350 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10351 r[0].r_offset += 4;
10352 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10355 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10357 r[1].r_offset = r[0].r_offset + 4;
10358 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10359 r[1].r_addend = r[0].r_addend;
10363 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10364 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10365 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10366 if (plt_static_chain)
10368 r[2].r_offset = r[1].r_offset + 4;
10369 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10370 r[2].r_addend = r[0].r_addend + 8;
10375 if (ALWAYS_EMIT_R2SAVE
10376 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10377 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10378 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10380 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10382 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10385 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10390 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10391 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10393 if (plt_static_chain)
10394 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10395 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10398 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10400 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10401 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10402 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10405 bfd_put_32 (obfd, BCTR, p), p += 4;
10409 /* Build a special .plt call stub for __tls_get_addr. */
10411 #define LD_R11_0R3 0xe9630000
10412 #define LD_R12_0R3 0xe9830000
10413 #define MR_R0_R3 0x7c601b78
10414 #define CMPDI_R11_0 0x2c2b0000
10415 #define ADD_R3_R12_R13 0x7c6c6a14
10416 #define BEQLR 0x4d820020
10417 #define MR_R3_R0 0x7c030378
10418 #define STD_R11_0R1 0xf9610000
10419 #define BCTRL 0x4e800421
10420 #define LD_R11_0R1 0xe9610000
10421 #define MTLR_R11 0x7d6803a6
10423 static inline bfd_byte *
10424 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10425 struct ppc_stub_hash_entry *stub_entry,
10426 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10428 bfd *obfd = htab->params->stub_bfd;
10430 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10431 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10432 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10433 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10434 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10435 bfd_put_32 (obfd, BEQLR, p), p += 4;
10436 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10437 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10438 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10441 r[0].r_offset += 9 * 4;
10442 p = build_plt_stub (htab, stub_entry, p, offset, r);
10443 bfd_put_32 (obfd, BCTRL, p - 4);
10445 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10446 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10447 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10448 bfd_put_32 (obfd, BLR, p), p += 4;
10453 static Elf_Internal_Rela *
10454 get_relocs (asection *sec, int count)
10456 Elf_Internal_Rela *relocs;
10457 struct bfd_elf_section_data *elfsec_data;
10459 elfsec_data = elf_section_data (sec);
10460 relocs = elfsec_data->relocs;
10461 if (relocs == NULL)
10463 bfd_size_type relsize;
10464 relsize = sec->reloc_count * sizeof (*relocs);
10465 relocs = bfd_alloc (sec->owner, relsize);
10466 if (relocs == NULL)
10468 elfsec_data->relocs = relocs;
10469 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10470 sizeof (Elf_Internal_Shdr));
10471 if (elfsec_data->rela.hdr == NULL)
10473 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10474 * sizeof (Elf64_External_Rela));
10475 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10476 sec->reloc_count = 0;
10478 relocs += sec->reloc_count;
10479 sec->reloc_count += count;
10484 get_r2off (struct bfd_link_info *info,
10485 struct ppc_stub_hash_entry *stub_entry)
10487 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10488 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10492 /* Support linking -R objects. Get the toc pointer from the
10495 if (!htab->opd_abi)
10497 asection *opd = stub_entry->h->elf.root.u.def.section;
10498 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10500 if (strcmp (opd->name, ".opd") != 0
10501 || opd->reloc_count != 0)
10503 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10504 stub_entry->h->elf.root.root.string);
10505 bfd_set_error (bfd_error_bad_value);
10508 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10510 r2off = bfd_get_64 (opd->owner, buf);
10511 r2off -= elf_gp (info->output_bfd);
10513 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10518 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10520 struct ppc_stub_hash_entry *stub_entry;
10521 struct ppc_branch_hash_entry *br_entry;
10522 struct bfd_link_info *info;
10523 struct ppc_link_hash_table *htab;
10528 Elf_Internal_Rela *r;
10531 /* Massage our args to the form they really have. */
10532 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10535 htab = ppc_hash_table (info);
10539 /* Make a note of the offset within the stubs for this entry. */
10540 stub_entry->stub_offset = stub_entry->stub_sec->size;
10541 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10543 htab->stub_count[stub_entry->stub_type - 1] += 1;
10544 switch (stub_entry->stub_type)
10546 case ppc_stub_long_branch:
10547 case ppc_stub_long_branch_r2off:
10548 /* Branches are relative. This is where we are going to. */
10549 dest = (stub_entry->target_value
10550 + stub_entry->target_section->output_offset
10551 + stub_entry->target_section->output_section->vma);
10552 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10555 /* And this is where we are coming from. */
10556 off -= (stub_entry->stub_offset
10557 + stub_entry->stub_sec->output_offset
10558 + stub_entry->stub_sec->output_section->vma);
10561 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10563 bfd_vma r2off = get_r2off (info, stub_entry);
10567 htab->stub_error = TRUE;
10570 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10573 if (PPC_HA (r2off) != 0)
10576 bfd_put_32 (htab->params->stub_bfd,
10577 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10580 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10584 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10586 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10588 info->callbacks->einfo
10589 (_("%P: long branch stub `%s' offset overflow\n"),
10590 stub_entry->root.string);
10591 htab->stub_error = TRUE;
10595 if (info->emitrelocations)
10597 r = get_relocs (stub_entry->stub_sec, 1);
10600 r->r_offset = loc - stub_entry->stub_sec->contents;
10601 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10602 r->r_addend = dest;
10603 if (stub_entry->h != NULL)
10605 struct elf_link_hash_entry **hashes;
10606 unsigned long symndx;
10607 struct ppc_link_hash_entry *h;
10609 hashes = elf_sym_hashes (htab->params->stub_bfd);
10610 if (hashes == NULL)
10612 bfd_size_type hsize;
10614 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10615 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10616 if (hashes == NULL)
10618 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10619 htab->stub_globals = 1;
10621 symndx = htab->stub_globals++;
10623 hashes[symndx] = &h->elf;
10624 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10625 if (h->oh != NULL && h->oh->is_func)
10626 h = ppc_follow_link (h->oh);
10627 if (h->elf.root.u.def.section != stub_entry->target_section)
10628 /* H is an opd symbol. The addend must be zero. */
10632 off = (h->elf.root.u.def.value
10633 + h->elf.root.u.def.section->output_offset
10634 + h->elf.root.u.def.section->output_section->vma);
10635 r->r_addend -= off;
10641 case ppc_stub_plt_branch:
10642 case ppc_stub_plt_branch_r2off:
10643 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10644 stub_entry->root.string + 9,
10646 if (br_entry == NULL)
10648 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10649 stub_entry->root.string);
10650 htab->stub_error = TRUE;
10654 dest = (stub_entry->target_value
10655 + stub_entry->target_section->output_offset
10656 + stub_entry->target_section->output_section->vma);
10657 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10658 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10660 bfd_put_64 (htab->brlt->owner, dest,
10661 htab->brlt->contents + br_entry->offset);
10663 if (br_entry->iter == htab->stub_iteration)
10665 br_entry->iter = 0;
10667 if (htab->relbrlt != NULL)
10669 /* Create a reloc for the branch lookup table entry. */
10670 Elf_Internal_Rela rela;
10673 rela.r_offset = (br_entry->offset
10674 + htab->brlt->output_offset
10675 + htab->brlt->output_section->vma);
10676 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10677 rela.r_addend = dest;
10679 rl = htab->relbrlt->contents;
10680 rl += (htab->relbrlt->reloc_count++
10681 * sizeof (Elf64_External_Rela));
10682 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10684 else if (info->emitrelocations)
10686 r = get_relocs (htab->brlt, 1);
10689 /* brlt, being SEC_LINKER_CREATED does not go through the
10690 normal reloc processing. Symbols and offsets are not
10691 translated from input file to output file form, so
10692 set up the offset per the output file. */
10693 r->r_offset = (br_entry->offset
10694 + htab->brlt->output_offset
10695 + htab->brlt->output_section->vma);
10696 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10697 r->r_addend = dest;
10701 dest = (br_entry->offset
10702 + htab->brlt->output_offset
10703 + htab->brlt->output_section->vma);
10706 - elf_gp (htab->brlt->output_section->owner)
10707 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10709 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10711 info->callbacks->einfo
10712 (_("%P: linkage table error against `%T'\n"),
10713 stub_entry->root.string);
10714 bfd_set_error (bfd_error_bad_value);
10715 htab->stub_error = TRUE;
10719 if (info->emitrelocations)
10721 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10724 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10725 if (bfd_big_endian (info->output_bfd))
10726 r[0].r_offset += 2;
10727 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10728 r[0].r_offset += 4;
10729 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10730 r[0].r_addend = dest;
10731 if (PPC_HA (off) != 0)
10733 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10734 r[1].r_offset = r[0].r_offset + 4;
10735 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10736 r[1].r_addend = r[0].r_addend;
10740 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10742 if (PPC_HA (off) != 0)
10745 bfd_put_32 (htab->params->stub_bfd,
10746 ADDIS_R12_R2 | PPC_HA (off), loc);
10748 bfd_put_32 (htab->params->stub_bfd,
10749 LD_R12_0R12 | PPC_LO (off), loc);
10754 bfd_put_32 (htab->params->stub_bfd,
10755 LD_R12_0R2 | PPC_LO (off), loc);
10760 bfd_vma r2off = get_r2off (info, stub_entry);
10762 if (r2off == 0 && htab->opd_abi)
10764 htab->stub_error = TRUE;
10768 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10771 if (PPC_HA (off) != 0)
10774 bfd_put_32 (htab->params->stub_bfd,
10775 ADDIS_R12_R2 | PPC_HA (off), loc);
10777 bfd_put_32 (htab->params->stub_bfd,
10778 LD_R12_0R12 | PPC_LO (off), loc);
10781 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10783 if (PPC_HA (r2off) != 0)
10787 bfd_put_32 (htab->params->stub_bfd,
10788 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10790 if (PPC_LO (r2off) != 0)
10794 bfd_put_32 (htab->params->stub_bfd,
10795 ADDI_R2_R2 | PPC_LO (r2off), loc);
10799 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10801 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10804 case ppc_stub_plt_call:
10805 case ppc_stub_plt_call_r2save:
10806 if (stub_entry->h != NULL
10807 && stub_entry->h->is_func_descriptor
10808 && stub_entry->h->oh != NULL)
10810 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10812 /* If the old-ABI "dot-symbol" is undefined make it weak so
10813 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10814 FIXME: We used to define the symbol on one of the call
10815 stubs instead, which is why we test symbol section id
10816 against htab->top_id in various places. Likely all
10817 these checks could now disappear. */
10818 if (fh->elf.root.type == bfd_link_hash_undefined)
10819 fh->elf.root.type = bfd_link_hash_undefweak;
10820 /* Stop undo_symbol_twiddle changing it back to undefined. */
10821 fh->was_undefined = 0;
10824 /* Now build the stub. */
10825 dest = stub_entry->plt_ent->plt.offset & ~1;
10826 if (dest >= (bfd_vma) -2)
10829 plt = htab->elf.splt;
10830 if (!htab->elf.dynamic_sections_created
10831 || stub_entry->h == NULL
10832 || stub_entry->h->elf.dynindx == -1)
10833 plt = htab->elf.iplt;
10835 dest += plt->output_offset + plt->output_section->vma;
10837 if (stub_entry->h == NULL
10838 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10840 Elf_Internal_Rela rela;
10843 rela.r_offset = dest;
10845 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10847 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10848 rela.r_addend = (stub_entry->target_value
10849 + stub_entry->target_section->output_offset
10850 + stub_entry->target_section->output_section->vma);
10852 rl = (htab->elf.irelplt->contents
10853 + (htab->elf.irelplt->reloc_count++
10854 * sizeof (Elf64_External_Rela)));
10855 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10856 stub_entry->plt_ent->plt.offset |= 1;
10860 - elf_gp (plt->output_section->owner)
10861 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10863 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10865 info->callbacks->einfo
10866 (_("%P: linkage table error against `%T'\n"),
10867 stub_entry->h != NULL
10868 ? stub_entry->h->elf.root.root.string
10870 bfd_set_error (bfd_error_bad_value);
10871 htab->stub_error = TRUE;
10875 if (htab->params->plt_stub_align != 0)
10877 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10879 stub_entry->stub_sec->size += pad;
10880 stub_entry->stub_offset = stub_entry->stub_sec->size;
10885 if (info->emitrelocations)
10887 r = get_relocs (stub_entry->stub_sec,
10888 ((PPC_HA (off) != 0)
10890 ? 2 + (htab->params->plt_static_chain
10891 && PPC_HA (off + 16) == PPC_HA (off))
10895 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10896 if (bfd_big_endian (info->output_bfd))
10897 r[0].r_offset += 2;
10898 r[0].r_addend = dest;
10900 if (stub_entry->h != NULL
10901 && (stub_entry->h == htab->tls_get_addr_fd
10902 || stub_entry->h == htab->tls_get_addr)
10903 && !htab->params->no_tls_get_addr_opt)
10904 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10906 p = build_plt_stub (htab, stub_entry, loc, off, r);
10915 stub_entry->stub_sec->size += size;
10917 if (htab->params->emit_stub_syms)
10919 struct elf_link_hash_entry *h;
10922 const char *const stub_str[] = { "long_branch",
10923 "long_branch_r2off",
10925 "plt_branch_r2off",
10929 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10930 len2 = strlen (stub_entry->root.string);
10931 name = bfd_malloc (len1 + len2 + 2);
10934 memcpy (name, stub_entry->root.string, 9);
10935 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10936 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10937 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10940 if (h->root.type == bfd_link_hash_new)
10942 h->root.type = bfd_link_hash_defined;
10943 h->root.u.def.section = stub_entry->stub_sec;
10944 h->root.u.def.value = stub_entry->stub_offset;
10945 h->ref_regular = 1;
10946 h->def_regular = 1;
10947 h->ref_regular_nonweak = 1;
10948 h->forced_local = 1;
10956 /* As above, but don't actually build the stub. Just bump offset so
10957 we know stub section sizes, and select plt_branch stubs where
10958 long_branch stubs won't do. */
10961 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10963 struct ppc_stub_hash_entry *stub_entry;
10964 struct bfd_link_info *info;
10965 struct ppc_link_hash_table *htab;
10969 /* Massage our args to the form they really have. */
10970 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10973 htab = ppc_hash_table (info);
10977 if (stub_entry->stub_type == ppc_stub_plt_call
10978 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10981 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10982 if (off >= (bfd_vma) -2)
10984 plt = htab->elf.splt;
10985 if (!htab->elf.dynamic_sections_created
10986 || stub_entry->h == NULL
10987 || stub_entry->h->elf.dynindx == -1)
10988 plt = htab->elf.iplt;
10989 off += (plt->output_offset
10990 + plt->output_section->vma
10991 - elf_gp (plt->output_section->owner)
10992 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10994 size = plt_stub_size (htab, stub_entry, off);
10995 if (htab->params->plt_stub_align)
10996 size += plt_stub_pad (htab, stub_entry, off);
10997 if (info->emitrelocations)
10999 stub_entry->stub_sec->reloc_count
11000 += ((PPC_HA (off) != 0)
11002 ? 2 + (htab->params->plt_static_chain
11003 && PPC_HA (off + 16) == PPC_HA (off))
11005 stub_entry->stub_sec->flags |= SEC_RELOC;
11010 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11013 bfd_vma local_off = 0;
11015 off = (stub_entry->target_value
11016 + stub_entry->target_section->output_offset
11017 + stub_entry->target_section->output_section->vma);
11018 off -= (stub_entry->stub_sec->size
11019 + stub_entry->stub_sec->output_offset
11020 + stub_entry->stub_sec->output_section->vma);
11022 /* Reset the stub type from the plt variant in case we now
11023 can reach with a shorter stub. */
11024 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11025 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11028 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11030 r2off = get_r2off (info, stub_entry);
11031 if (r2off == 0 && htab->opd_abi)
11033 htab->stub_error = TRUE;
11037 if (PPC_HA (r2off) != 0)
11042 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11044 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11045 Do the same for -R objects without function descriptors. */
11046 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11047 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11050 struct ppc_branch_hash_entry *br_entry;
11052 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11053 stub_entry->root.string + 9,
11055 if (br_entry == NULL)
11057 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11058 stub_entry->root.string);
11059 htab->stub_error = TRUE;
11063 if (br_entry->iter != htab->stub_iteration)
11065 br_entry->iter = htab->stub_iteration;
11066 br_entry->offset = htab->brlt->size;
11067 htab->brlt->size += 8;
11069 if (htab->relbrlt != NULL)
11070 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11071 else if (info->emitrelocations)
11073 htab->brlt->reloc_count += 1;
11074 htab->brlt->flags |= SEC_RELOC;
11078 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11079 off = (br_entry->offset
11080 + htab->brlt->output_offset
11081 + htab->brlt->output_section->vma
11082 - elf_gp (htab->brlt->output_section->owner)
11083 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11085 if (info->emitrelocations)
11087 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11088 stub_entry->stub_sec->flags |= SEC_RELOC;
11091 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11094 if (PPC_HA (off) != 0)
11100 if (PPC_HA (off) != 0)
11103 if (PPC_HA (r2off) != 0)
11105 if (PPC_LO (r2off) != 0)
11109 else if (info->emitrelocations)
11111 stub_entry->stub_sec->reloc_count += 1;
11112 stub_entry->stub_sec->flags |= SEC_RELOC;
11116 stub_entry->stub_sec->size += size;
11120 /* Set up various things so that we can make a list of input sections
11121 for each output section included in the link. Returns -1 on error,
11122 0 when no stubs will be needed, and 1 on success. */
11125 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11128 int top_id, top_index, id;
11130 asection **input_list;
11132 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11137 /* Find the top input section id. */
11138 for (input_bfd = info->input_bfds, top_id = 3;
11140 input_bfd = input_bfd->link.next)
11142 for (section = input_bfd->sections;
11144 section = section->next)
11146 if (top_id < section->id)
11147 top_id = section->id;
11151 htab->top_id = top_id;
11152 amt = sizeof (struct map_stub) * (top_id + 1);
11153 htab->stub_group = bfd_zmalloc (amt);
11154 if (htab->stub_group == NULL)
11157 /* Set toc_off for com, und, abs and ind sections. */
11158 for (id = 0; id < 3; id++)
11159 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11161 /* We can't use output_bfd->section_count here to find the top output
11162 section index as some sections may have been removed, and
11163 strip_excluded_output_sections doesn't renumber the indices. */
11164 for (section = info->output_bfd->sections, top_index = 0;
11166 section = section->next)
11168 if (top_index < section->index)
11169 top_index = section->index;
11172 htab->top_index = top_index;
11173 amt = sizeof (asection *) * (top_index + 1);
11174 input_list = bfd_zmalloc (amt);
11175 htab->input_list = input_list;
11176 if (input_list == NULL)
11182 /* Set up for first pass at multitoc partitioning. */
11185 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11187 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11189 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11190 htab->toc_bfd = NULL;
11191 htab->toc_first_sec = NULL;
11194 /* The linker repeatedly calls this function for each TOC input section
11195 and linker generated GOT section. Group input bfds such that the toc
11196 within a group is less than 64k in size. */
11199 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11201 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11202 bfd_vma addr, off, limit;
11207 if (!htab->second_toc_pass)
11209 /* Keep track of the first .toc or .got section for this input bfd. */
11210 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11214 htab->toc_bfd = isec->owner;
11215 htab->toc_first_sec = isec;
11218 addr = isec->output_offset + isec->output_section->vma;
11219 off = addr - htab->toc_curr;
11220 limit = 0x80008000;
11221 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11223 if (off + isec->size > limit)
11225 addr = (htab->toc_first_sec->output_offset
11226 + htab->toc_first_sec->output_section->vma);
11227 htab->toc_curr = addr;
11230 /* toc_curr is the base address of this toc group. Set elf_gp
11231 for the input section to be the offset relative to the
11232 output toc base plus 0x8000. Making the input elf_gp an
11233 offset allows us to move the toc as a whole without
11234 recalculating input elf_gp. */
11235 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11236 off += TOC_BASE_OFF;
11238 /* Die if someone uses a linker script that doesn't keep input
11239 file .toc and .got together. */
11241 && elf_gp (isec->owner) != 0
11242 && elf_gp (isec->owner) != off)
11245 elf_gp (isec->owner) = off;
11249 /* During the second pass toc_first_sec points to the start of
11250 a toc group, and toc_curr is used to track the old elf_gp.
11251 We use toc_bfd to ensure we only look at each bfd once. */
11252 if (htab->toc_bfd == isec->owner)
11254 htab->toc_bfd = isec->owner;
11256 if (htab->toc_first_sec == NULL
11257 || htab->toc_curr != elf_gp (isec->owner))
11259 htab->toc_curr = elf_gp (isec->owner);
11260 htab->toc_first_sec = isec;
11262 addr = (htab->toc_first_sec->output_offset
11263 + htab->toc_first_sec->output_section->vma);
11264 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11265 elf_gp (isec->owner) = off;
11270 /* Called via elf_link_hash_traverse to merge GOT entries for global
11274 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11276 if (h->root.type == bfd_link_hash_indirect)
11279 merge_got_entries (&h->got.glist);
11284 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11288 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11290 struct got_entry *gent;
11292 if (h->root.type == bfd_link_hash_indirect)
11295 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11296 if (!gent->is_indirect)
11297 allocate_got (h, (struct bfd_link_info *) inf, gent);
11301 /* Called on the first multitoc pass after the last call to
11302 ppc64_elf_next_toc_section. This function removes duplicate GOT
11306 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11308 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11309 struct bfd *ibfd, *ibfd2;
11310 bfd_boolean done_something;
11312 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11314 if (!htab->do_multi_toc)
11317 /* Merge global sym got entries within a toc group. */
11318 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11320 /* And tlsld_got. */
11321 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11323 struct got_entry *ent, *ent2;
11325 if (!is_ppc64_elf (ibfd))
11328 ent = ppc64_tlsld_got (ibfd);
11329 if (!ent->is_indirect
11330 && ent->got.offset != (bfd_vma) -1)
11332 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11334 if (!is_ppc64_elf (ibfd2))
11337 ent2 = ppc64_tlsld_got (ibfd2);
11338 if (!ent2->is_indirect
11339 && ent2->got.offset != (bfd_vma) -1
11340 && elf_gp (ibfd2) == elf_gp (ibfd))
11342 ent2->is_indirect = TRUE;
11343 ent2->got.ent = ent;
11349 /* Zap sizes of got sections. */
11350 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11351 htab->elf.irelplt->size -= htab->got_reli_size;
11352 htab->got_reli_size = 0;
11354 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11356 asection *got, *relgot;
11358 if (!is_ppc64_elf (ibfd))
11361 got = ppc64_elf_tdata (ibfd)->got;
11364 got->rawsize = got->size;
11366 relgot = ppc64_elf_tdata (ibfd)->relgot;
11367 relgot->rawsize = relgot->size;
11372 /* Now reallocate the got, local syms first. We don't need to
11373 allocate section contents again since we never increase size. */
11374 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11376 struct got_entry **lgot_ents;
11377 struct got_entry **end_lgot_ents;
11378 struct plt_entry **local_plt;
11379 struct plt_entry **end_local_plt;
11380 unsigned char *lgot_masks;
11381 bfd_size_type locsymcount;
11382 Elf_Internal_Shdr *symtab_hdr;
11385 if (!is_ppc64_elf (ibfd))
11388 lgot_ents = elf_local_got_ents (ibfd);
11392 symtab_hdr = &elf_symtab_hdr (ibfd);
11393 locsymcount = symtab_hdr->sh_info;
11394 end_lgot_ents = lgot_ents + locsymcount;
11395 local_plt = (struct plt_entry **) end_lgot_ents;
11396 end_local_plt = local_plt + locsymcount;
11397 lgot_masks = (unsigned char *) end_local_plt;
11398 s = ppc64_elf_tdata (ibfd)->got;
11399 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11401 struct got_entry *ent;
11403 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11405 unsigned int ent_size = 8;
11406 unsigned int rel_size = sizeof (Elf64_External_Rela);
11408 ent->got.offset = s->size;
11409 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11414 s->size += ent_size;
11415 if ((*lgot_masks & PLT_IFUNC) != 0)
11417 htab->elf.irelplt->size += rel_size;
11418 htab->got_reli_size += rel_size;
11420 else if (info->shared)
11422 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11423 srel->size += rel_size;
11429 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11431 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11433 struct got_entry *ent;
11435 if (!is_ppc64_elf (ibfd))
11438 ent = ppc64_tlsld_got (ibfd);
11439 if (!ent->is_indirect
11440 && ent->got.offset != (bfd_vma) -1)
11442 asection *s = ppc64_elf_tdata (ibfd)->got;
11443 ent->got.offset = s->size;
11447 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11448 srel->size += sizeof (Elf64_External_Rela);
11453 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11454 if (!done_something)
11455 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11459 if (!is_ppc64_elf (ibfd))
11462 got = ppc64_elf_tdata (ibfd)->got;
11465 done_something = got->rawsize != got->size;
11466 if (done_something)
11471 if (done_something)
11472 (*htab->params->layout_sections_again) ();
11474 /* Set up for second pass over toc sections to recalculate elf_gp
11475 on input sections. */
11476 htab->toc_bfd = NULL;
11477 htab->toc_first_sec = NULL;
11478 htab->second_toc_pass = TRUE;
11479 return done_something;
11482 /* Called after second pass of multitoc partitioning. */
11485 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11487 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11489 /* After the second pass, toc_curr tracks the TOC offset used
11490 for code sections below in ppc64_elf_next_input_section. */
11491 htab->toc_curr = TOC_BASE_OFF;
11494 /* No toc references were found in ISEC. If the code in ISEC makes no
11495 calls, then there's no need to use toc adjusting stubs when branching
11496 into ISEC. Actually, indirect calls from ISEC are OK as they will
11497 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11498 needed, and 2 if a cyclical call-graph was found but no other reason
11499 for a stub was detected. If called from the top level, a return of
11500 2 means the same as a return of 0. */
11503 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11507 /* Mark this section as checked. */
11508 isec->call_check_done = 1;
11510 /* We know none of our code bearing sections will need toc stubs. */
11511 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11514 if (isec->size == 0)
11517 if (isec->output_section == NULL)
11521 if (isec->reloc_count != 0)
11523 Elf_Internal_Rela *relstart, *rel;
11524 Elf_Internal_Sym *local_syms;
11525 struct ppc_link_hash_table *htab;
11527 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11528 info->keep_memory);
11529 if (relstart == NULL)
11532 /* Look for branches to outside of this section. */
11534 htab = ppc_hash_table (info);
11538 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11540 enum elf_ppc64_reloc_type r_type;
11541 unsigned long r_symndx;
11542 struct elf_link_hash_entry *h;
11543 struct ppc_link_hash_entry *eh;
11544 Elf_Internal_Sym *sym;
11546 struct _opd_sec_data *opd;
11550 r_type = ELF64_R_TYPE (rel->r_info);
11551 if (r_type != R_PPC64_REL24
11552 && r_type != R_PPC64_REL14
11553 && r_type != R_PPC64_REL14_BRTAKEN
11554 && r_type != R_PPC64_REL14_BRNTAKEN)
11557 r_symndx = ELF64_R_SYM (rel->r_info);
11558 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11565 /* Calls to dynamic lib functions go through a plt call stub
11567 eh = (struct ppc_link_hash_entry *) h;
11569 && (eh->elf.plt.plist != NULL
11571 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11577 if (sym_sec == NULL)
11578 /* Ignore other undefined symbols. */
11581 /* Assume branches to other sections not included in the
11582 link need stubs too, to cover -R and absolute syms. */
11583 if (sym_sec->output_section == NULL)
11590 sym_value = sym->st_value;
11593 if (h->root.type != bfd_link_hash_defined
11594 && h->root.type != bfd_link_hash_defweak)
11596 sym_value = h->root.u.def.value;
11598 sym_value += rel->r_addend;
11600 /* If this branch reloc uses an opd sym, find the code section. */
11601 opd = get_opd_info (sym_sec);
11604 if (h == NULL && opd->adjust != NULL)
11608 adjust = opd->adjust[OPD_NDX (sym->st_value)];
11610 /* Assume deleted functions won't ever be called. */
11612 sym_value += adjust;
11615 dest = opd_entry_value (sym_sec, sym_value,
11616 &sym_sec, NULL, FALSE);
11617 if (dest == (bfd_vma) -1)
11622 + sym_sec->output_offset
11623 + sym_sec->output_section->vma);
11625 /* Ignore branch to self. */
11626 if (sym_sec == isec)
11629 /* If the called function uses the toc, we need a stub. */
11630 if (sym_sec->has_toc_reloc
11631 || sym_sec->makes_toc_func_call)
11637 /* Assume any branch that needs a long branch stub might in fact
11638 need a plt_branch stub. A plt_branch stub uses r2. */
11639 else if (dest - (isec->output_offset
11640 + isec->output_section->vma
11641 + rel->r_offset) + (1 << 25)
11642 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11650 /* If calling back to a section in the process of being
11651 tested, we can't say for sure that no toc adjusting stubs
11652 are needed, so don't return zero. */
11653 else if (sym_sec->call_check_in_progress)
11656 /* Branches to another section that itself doesn't have any TOC
11657 references are OK. Recursively call ourselves to check. */
11658 else if (!sym_sec->call_check_done)
11662 /* Mark current section as indeterminate, so that other
11663 sections that call back to current won't be marked as
11665 isec->call_check_in_progress = 1;
11666 recur = toc_adjusting_stub_needed (info, sym_sec);
11667 isec->call_check_in_progress = 0;
11678 if (local_syms != NULL
11679 && (elf_symtab_hdr (isec->owner).contents
11680 != (unsigned char *) local_syms))
11682 if (elf_section_data (isec)->relocs != relstart)
11687 && isec->map_head.s != NULL
11688 && (strcmp (isec->output_section->name, ".init") == 0
11689 || strcmp (isec->output_section->name, ".fini") == 0))
11691 if (isec->map_head.s->has_toc_reloc
11692 || isec->map_head.s->makes_toc_func_call)
11694 else if (!isec->map_head.s->call_check_done)
11697 isec->call_check_in_progress = 1;
11698 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11699 isec->call_check_in_progress = 0;
11706 isec->makes_toc_func_call = 1;
11711 /* The linker repeatedly calls this function for each input section,
11712 in the order that input sections are linked into output sections.
11713 Build lists of input sections to determine groupings between which
11714 we may insert linker stubs. */
11717 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11719 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11724 if ((isec->output_section->flags & SEC_CODE) != 0
11725 && isec->output_section->index <= htab->top_index)
11727 asection **list = htab->input_list + isec->output_section->index;
11728 /* Steal the link_sec pointer for our list. */
11729 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11730 /* This happens to make the list in reverse order,
11731 which is what we want. */
11732 PREV_SEC (isec) = *list;
11736 if (htab->multi_toc_needed)
11738 /* Analyse sections that aren't already flagged as needing a
11739 valid toc pointer. Exclude .fixup for the linux kernel.
11740 .fixup contains branches, but only back to the function that
11741 hit an exception. */
11742 if (!(isec->has_toc_reloc
11743 || (isec->flags & SEC_CODE) == 0
11744 || strcmp (isec->name, ".fixup") == 0
11745 || isec->call_check_done))
11747 if (toc_adjusting_stub_needed (info, isec) < 0)
11750 /* Make all sections use the TOC assigned for this object file.
11751 This will be wrong for pasted sections; We fix that in
11752 check_pasted_section(). */
11753 if (elf_gp (isec->owner) != 0)
11754 htab->toc_curr = elf_gp (isec->owner);
11757 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11761 /* Check that all .init and .fini sections use the same toc, if they
11762 have toc relocs. */
11765 check_pasted_section (struct bfd_link_info *info, const char *name)
11767 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11771 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11772 bfd_vma toc_off = 0;
11775 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11776 if (i->has_toc_reloc)
11779 toc_off = htab->stub_group[i->id].toc_off;
11780 else if (toc_off != htab->stub_group[i->id].toc_off)
11785 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11786 if (i->makes_toc_func_call)
11788 toc_off = htab->stub_group[i->id].toc_off;
11792 /* Make sure the whole pasted function uses the same toc offset. */
11794 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11795 htab->stub_group[i->id].toc_off = toc_off;
11801 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11803 return (check_pasted_section (info, ".init")
11804 & check_pasted_section (info, ".fini"));
11807 /* See whether we can group stub sections together. Grouping stub
11808 sections may result in fewer stubs. More importantly, we need to
11809 put all .init* and .fini* stubs at the beginning of the .init or
11810 .fini output sections respectively, because glibc splits the
11811 _init and _fini functions into multiple parts. Putting a stub in
11812 the middle of a function is not a good idea. */
11815 group_sections (struct ppc_link_hash_table *htab,
11816 bfd_size_type stub_group_size,
11817 bfd_boolean stubs_always_before_branch)
11820 bfd_size_type stub14_group_size;
11821 bfd_boolean suppress_size_errors;
11823 suppress_size_errors = FALSE;
11824 stub14_group_size = stub_group_size >> 10;
11825 if (stub_group_size == 1)
11827 /* Default values. */
11828 if (stubs_always_before_branch)
11830 stub_group_size = 0x1e00000;
11831 stub14_group_size = 0x7800;
11835 stub_group_size = 0x1c00000;
11836 stub14_group_size = 0x7000;
11838 suppress_size_errors = TRUE;
11841 list = htab->input_list + htab->top_index;
11844 asection *tail = *list;
11845 while (tail != NULL)
11849 bfd_size_type total;
11850 bfd_boolean big_sec;
11854 total = tail->size;
11855 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11856 && ppc64_elf_section_data (tail)->has_14bit_branch
11857 ? stub14_group_size : stub_group_size);
11858 if (big_sec && !suppress_size_errors)
11859 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11860 tail->owner, tail);
11861 curr_toc = htab->stub_group[tail->id].toc_off;
11863 while ((prev = PREV_SEC (curr)) != NULL
11864 && ((total += curr->output_offset - prev->output_offset)
11865 < (ppc64_elf_section_data (prev) != NULL
11866 && ppc64_elf_section_data (prev)->has_14bit_branch
11867 ? stub14_group_size : stub_group_size))
11868 && htab->stub_group[prev->id].toc_off == curr_toc)
11871 /* OK, the size from the start of CURR to the end is less
11872 than stub_group_size and thus can be handled by one stub
11873 section. (or the tail section is itself larger than
11874 stub_group_size, in which case we may be toast.) We
11875 should really be keeping track of the total size of stubs
11876 added here, as stubs contribute to the final output
11877 section size. That's a little tricky, and this way will
11878 only break if stubs added make the total size more than
11879 2^25, ie. for the default stub_group_size, if stubs total
11880 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11883 prev = PREV_SEC (tail);
11884 /* Set up this stub group. */
11885 htab->stub_group[tail->id].link_sec = curr;
11887 while (tail != curr && (tail = prev) != NULL);
11889 /* But wait, there's more! Input sections up to stub_group_size
11890 bytes before the stub section can be handled by it too.
11891 Don't do this if we have a really large section after the
11892 stubs, as adding more stubs increases the chance that
11893 branches may not reach into the stub section. */
11894 if (!stubs_always_before_branch && !big_sec)
11897 while (prev != NULL
11898 && ((total += tail->output_offset - prev->output_offset)
11899 < (ppc64_elf_section_data (prev) != NULL
11900 && ppc64_elf_section_data (prev)->has_14bit_branch
11901 ? stub14_group_size : stub_group_size))
11902 && htab->stub_group[prev->id].toc_off == curr_toc)
11905 prev = PREV_SEC (tail);
11906 htab->stub_group[tail->id].link_sec = curr;
11912 while (list-- != htab->input_list);
11913 free (htab->input_list);
11917 static const unsigned char glink_eh_frame_cie[] =
11919 0, 0, 0, 16, /* length. */
11920 0, 0, 0, 0, /* id. */
11921 1, /* CIE version. */
11922 'z', 'R', 0, /* Augmentation string. */
11923 4, /* Code alignment. */
11924 0x78, /* Data alignment. */
11926 1, /* Augmentation size. */
11927 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11928 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11932 /* Stripping output sections is normally done before dynamic section
11933 symbols have been allocated. This function is called later, and
11934 handles cases like htab->brlt which is mapped to its own output
11938 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11940 if (isec->size == 0
11941 && isec->output_section->size == 0
11942 && !(isec->output_section->flags & SEC_KEEP)
11943 && !bfd_section_removed_from_list (info->output_bfd,
11944 isec->output_section)
11945 && elf_section_data (isec->output_section)->dynindx == 0)
11947 isec->output_section->flags |= SEC_EXCLUDE;
11948 bfd_section_list_remove (info->output_bfd, isec->output_section);
11949 info->output_bfd->section_count--;
11953 /* Determine and set the size of the stub section for a final link.
11955 The basic idea here is to examine all the relocations looking for
11956 PC-relative calls to a target that is unreachable with a "bl"
11960 ppc64_elf_size_stubs (struct bfd_link_info *info)
11962 bfd_size_type stub_group_size;
11963 bfd_boolean stubs_always_before_branch;
11964 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11969 if (htab->params->plt_thread_safe == -1 && !info->executable)
11970 htab->params->plt_thread_safe = 1;
11971 if (!htab->opd_abi)
11972 htab->params->plt_thread_safe = 0;
11973 else if (htab->params->plt_thread_safe == -1)
11975 static const char *const thread_starter[] =
11979 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11981 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11982 "mq_notify", "create_timer",
11987 "GOMP_parallel_start",
11988 "GOMP_parallel_loop_static",
11989 "GOMP_parallel_loop_static_start",
11990 "GOMP_parallel_loop_dynamic",
11991 "GOMP_parallel_loop_dynamic_start",
11992 "GOMP_parallel_loop_guided",
11993 "GOMP_parallel_loop_guided_start",
11994 "GOMP_parallel_loop_runtime",
11995 "GOMP_parallel_loop_runtime_start",
11996 "GOMP_parallel_sections",
11997 "GOMP_parallel_sections_start",
12003 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
12005 struct elf_link_hash_entry *h;
12006 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12007 FALSE, FALSE, TRUE);
12008 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12009 if (htab->params->plt_thread_safe)
12013 stubs_always_before_branch = htab->params->group_size < 0;
12014 if (htab->params->group_size < 0)
12015 stub_group_size = -htab->params->group_size;
12017 stub_group_size = htab->params->group_size;
12019 group_sections (htab, stub_group_size, stubs_always_before_branch);
12024 unsigned int bfd_indx;
12025 asection *stub_sec;
12027 htab->stub_iteration += 1;
12029 for (input_bfd = info->input_bfds, bfd_indx = 0;
12031 input_bfd = input_bfd->link.next, bfd_indx++)
12033 Elf_Internal_Shdr *symtab_hdr;
12035 Elf_Internal_Sym *local_syms = NULL;
12037 if (!is_ppc64_elf (input_bfd))
12040 /* We'll need the symbol table in a second. */
12041 symtab_hdr = &elf_symtab_hdr (input_bfd);
12042 if (symtab_hdr->sh_info == 0)
12045 /* Walk over each section attached to the input bfd. */
12046 for (section = input_bfd->sections;
12048 section = section->next)
12050 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12052 /* If there aren't any relocs, then there's nothing more
12054 if ((section->flags & SEC_RELOC) == 0
12055 || (section->flags & SEC_ALLOC) == 0
12056 || (section->flags & SEC_LOAD) == 0
12057 || (section->flags & SEC_CODE) == 0
12058 || section->reloc_count == 0)
12061 /* If this section is a link-once section that will be
12062 discarded, then don't create any stubs. */
12063 if (section->output_section == NULL
12064 || section->output_section->owner != info->output_bfd)
12067 /* Get the relocs. */
12069 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12070 info->keep_memory);
12071 if (internal_relocs == NULL)
12072 goto error_ret_free_local;
12074 /* Now examine each relocation. */
12075 irela = internal_relocs;
12076 irelaend = irela + section->reloc_count;
12077 for (; irela < irelaend; irela++)
12079 enum elf_ppc64_reloc_type r_type;
12080 unsigned int r_indx;
12081 enum ppc_stub_type stub_type;
12082 struct ppc_stub_hash_entry *stub_entry;
12083 asection *sym_sec, *code_sec;
12084 bfd_vma sym_value, code_value;
12085 bfd_vma destination;
12086 unsigned long local_off;
12087 bfd_boolean ok_dest;
12088 struct ppc_link_hash_entry *hash;
12089 struct ppc_link_hash_entry *fdh;
12090 struct elf_link_hash_entry *h;
12091 Elf_Internal_Sym *sym;
12093 const asection *id_sec;
12094 struct _opd_sec_data *opd;
12095 struct plt_entry *plt_ent;
12097 r_type = ELF64_R_TYPE (irela->r_info);
12098 r_indx = ELF64_R_SYM (irela->r_info);
12100 if (r_type >= R_PPC64_max)
12102 bfd_set_error (bfd_error_bad_value);
12103 goto error_ret_free_internal;
12106 /* Only look for stubs on branch instructions. */
12107 if (r_type != R_PPC64_REL24
12108 && r_type != R_PPC64_REL14
12109 && r_type != R_PPC64_REL14_BRTAKEN
12110 && r_type != R_PPC64_REL14_BRNTAKEN)
12113 /* Now determine the call target, its name, value,
12115 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12116 r_indx, input_bfd))
12117 goto error_ret_free_internal;
12118 hash = (struct ppc_link_hash_entry *) h;
12125 sym_value = sym->st_value;
12128 else if (hash->elf.root.type == bfd_link_hash_defined
12129 || hash->elf.root.type == bfd_link_hash_defweak)
12131 sym_value = hash->elf.root.u.def.value;
12132 if (sym_sec->output_section != NULL)
12135 else if (hash->elf.root.type == bfd_link_hash_undefweak
12136 || hash->elf.root.type == bfd_link_hash_undefined)
12138 /* Recognise an old ABI func code entry sym, and
12139 use the func descriptor sym instead if it is
12141 if (hash->elf.root.root.string[0] == '.'
12142 && (fdh = lookup_fdh (hash, htab)) != NULL)
12144 if (fdh->elf.root.type == bfd_link_hash_defined
12145 || fdh->elf.root.type == bfd_link_hash_defweak)
12147 sym_sec = fdh->elf.root.u.def.section;
12148 sym_value = fdh->elf.root.u.def.value;
12149 if (sym_sec->output_section != NULL)
12158 bfd_set_error (bfd_error_bad_value);
12159 goto error_ret_free_internal;
12166 sym_value += irela->r_addend;
12167 destination = (sym_value
12168 + sym_sec->output_offset
12169 + sym_sec->output_section->vma);
12170 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12175 code_sec = sym_sec;
12176 code_value = sym_value;
12177 opd = get_opd_info (sym_sec);
12182 if (hash == NULL && opd->adjust != NULL)
12184 long adjust = opd->adjust[OPD_NDX (sym_value)];
12187 code_value += adjust;
12188 sym_value += adjust;
12190 dest = opd_entry_value (sym_sec, sym_value,
12191 &code_sec, &code_value, FALSE);
12192 if (dest != (bfd_vma) -1)
12194 destination = dest;
12197 /* Fixup old ABI sym to point at code
12199 hash->elf.root.type = bfd_link_hash_defweak;
12200 hash->elf.root.u.def.section = code_sec;
12201 hash->elf.root.u.def.value = code_value;
12206 /* Determine what (if any) linker stub is needed. */
12208 stub_type = ppc_type_of_stub (section, irela, &hash,
12209 &plt_ent, destination,
12212 if (stub_type != ppc_stub_plt_call)
12214 /* Check whether we need a TOC adjusting stub.
12215 Since the linker pastes together pieces from
12216 different object files when creating the
12217 _init and _fini functions, it may be that a
12218 call to what looks like a local sym is in
12219 fact a call needing a TOC adjustment. */
12220 if (code_sec != NULL
12221 && code_sec->output_section != NULL
12222 && (htab->stub_group[code_sec->id].toc_off
12223 != htab->stub_group[section->id].toc_off)
12224 && (code_sec->has_toc_reloc
12225 || code_sec->makes_toc_func_call))
12226 stub_type = ppc_stub_long_branch_r2off;
12229 if (stub_type == ppc_stub_none)
12232 /* __tls_get_addr calls might be eliminated. */
12233 if (stub_type != ppc_stub_plt_call
12235 && (hash == htab->tls_get_addr
12236 || hash == htab->tls_get_addr_fd)
12237 && section->has_tls_reloc
12238 && irela != internal_relocs)
12240 /* Get tls info. */
12241 unsigned char *tls_mask;
12243 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12244 irela - 1, input_bfd))
12245 goto error_ret_free_internal;
12246 if (*tls_mask != 0)
12250 if (stub_type == ppc_stub_plt_call
12251 && irela + 1 < irelaend
12252 && irela[1].r_offset == irela->r_offset + 4
12253 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12255 if (!tocsave_find (htab, INSERT,
12256 &local_syms, irela + 1, input_bfd))
12257 goto error_ret_free_internal;
12259 else if (stub_type == ppc_stub_plt_call)
12260 stub_type = ppc_stub_plt_call_r2save;
12262 /* Support for grouping stub sections. */
12263 id_sec = htab->stub_group[section->id].link_sec;
12265 /* Get the name of this stub. */
12266 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12268 goto error_ret_free_internal;
12270 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12271 stub_name, FALSE, FALSE);
12272 if (stub_entry != NULL)
12274 /* The proper stub has already been created. */
12276 if (stub_type == ppc_stub_plt_call_r2save)
12277 stub_entry->stub_type = stub_type;
12281 stub_entry = ppc_add_stub (stub_name, section, info);
12282 if (stub_entry == NULL)
12285 error_ret_free_internal:
12286 if (elf_section_data (section)->relocs == NULL)
12287 free (internal_relocs);
12288 error_ret_free_local:
12289 if (local_syms != NULL
12290 && (symtab_hdr->contents
12291 != (unsigned char *) local_syms))
12296 stub_entry->stub_type = stub_type;
12297 if (stub_type != ppc_stub_plt_call
12298 && stub_type != ppc_stub_plt_call_r2save)
12300 stub_entry->target_value = code_value;
12301 stub_entry->target_section = code_sec;
12305 stub_entry->target_value = sym_value;
12306 stub_entry->target_section = sym_sec;
12308 stub_entry->h = hash;
12309 stub_entry->plt_ent = plt_ent;
12310 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12312 if (stub_entry->h != NULL)
12313 htab->stub_globals += 1;
12316 /* We're done with the internal relocs, free them. */
12317 if (elf_section_data (section)->relocs != internal_relocs)
12318 free (internal_relocs);
12321 if (local_syms != NULL
12322 && symtab_hdr->contents != (unsigned char *) local_syms)
12324 if (!info->keep_memory)
12327 symtab_hdr->contents = (unsigned char *) local_syms;
12331 /* We may have added some stubs. Find out the new size of the
12333 for (stub_sec = htab->params->stub_bfd->sections;
12335 stub_sec = stub_sec->next)
12336 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12338 stub_sec->rawsize = stub_sec->size;
12339 stub_sec->size = 0;
12340 stub_sec->reloc_count = 0;
12341 stub_sec->flags &= ~SEC_RELOC;
12344 htab->brlt->size = 0;
12345 htab->brlt->reloc_count = 0;
12346 htab->brlt->flags &= ~SEC_RELOC;
12347 if (htab->relbrlt != NULL)
12348 htab->relbrlt->size = 0;
12350 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12352 if (info->emitrelocations
12353 && htab->glink != NULL && htab->glink->size != 0)
12355 htab->glink->reloc_count = 1;
12356 htab->glink->flags |= SEC_RELOC;
12359 if (htab->glink_eh_frame != NULL
12360 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12361 && htab->glink_eh_frame->output_section->size != 0)
12363 size_t size = 0, align;
12365 for (stub_sec = htab->params->stub_bfd->sections;
12367 stub_sec = stub_sec->next)
12368 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12370 if (htab->glink != NULL && htab->glink->size != 0)
12373 size += sizeof (glink_eh_frame_cie);
12375 align <<= htab->glink_eh_frame->output_section->alignment_power;
12377 size = (size + align) & ~align;
12378 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12379 htab->glink_eh_frame->size = size;
12382 if (htab->params->plt_stub_align != 0)
12383 for (stub_sec = htab->params->stub_bfd->sections;
12385 stub_sec = stub_sec->next)
12386 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12387 stub_sec->size = ((stub_sec->size
12388 + (1 << htab->params->plt_stub_align) - 1)
12389 & (-1 << htab->params->plt_stub_align));
12391 for (stub_sec = htab->params->stub_bfd->sections;
12393 stub_sec = stub_sec->next)
12394 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12395 && stub_sec->rawsize != stub_sec->size)
12398 /* Exit from this loop when no stubs have been added, and no stubs
12399 have changed size. */
12400 if (stub_sec == NULL
12401 && (htab->glink_eh_frame == NULL
12402 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12405 /* Ask the linker to do its stuff. */
12406 (*htab->params->layout_sections_again) ();
12409 if (htab->glink_eh_frame != NULL
12410 && htab->glink_eh_frame->size != 0)
12413 bfd_byte *p, *last_fde;
12414 size_t last_fde_len, size, align, pad;
12415 asection *stub_sec;
12417 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12420 htab->glink_eh_frame->contents = p;
12423 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12424 /* CIE length (rewrite in case little-endian). */
12425 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12426 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12427 p += sizeof (glink_eh_frame_cie);
12429 for (stub_sec = htab->params->stub_bfd->sections;
12431 stub_sec = stub_sec->next)
12432 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12437 bfd_put_32 (htab->elf.dynobj, 20, p);
12440 val = p - htab->glink_eh_frame->contents;
12441 bfd_put_32 (htab->elf.dynobj, val, p);
12443 /* Offset to stub section, written later. */
12445 /* stub section size. */
12446 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12448 /* Augmentation. */
12453 if (htab->glink != NULL && htab->glink->size != 0)
12458 bfd_put_32 (htab->elf.dynobj, 20, p);
12461 val = p - htab->glink_eh_frame->contents;
12462 bfd_put_32 (htab->elf.dynobj, val, p);
12464 /* Offset to .glink, written later. */
12467 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12469 /* Augmentation. */
12472 *p++ = DW_CFA_advance_loc + 1;
12473 *p++ = DW_CFA_register;
12476 *p++ = DW_CFA_advance_loc + 4;
12477 *p++ = DW_CFA_restore_extended;
12480 /* Subsume any padding into the last FDE if user .eh_frame
12481 sections are aligned more than glink_eh_frame. Otherwise any
12482 zero padding will be seen as a terminator. */
12483 size = p - htab->glink_eh_frame->contents;
12485 align <<= htab->glink_eh_frame->output_section->alignment_power;
12487 pad = ((size + align) & ~align) - size;
12488 htab->glink_eh_frame->size = size + pad;
12489 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12492 maybe_strip_output (info, htab->brlt);
12493 if (htab->glink_eh_frame != NULL)
12494 maybe_strip_output (info, htab->glink_eh_frame);
12499 /* Called after we have determined section placement. If sections
12500 move, we'll be called again. Provide a value for TOCstart. */
12503 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12508 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12509 order. The TOC starts where the first of these sections starts. */
12510 s = bfd_get_section_by_name (obfd, ".got");
12511 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12512 s = bfd_get_section_by_name (obfd, ".toc");
12513 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12514 s = bfd_get_section_by_name (obfd, ".tocbss");
12515 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12516 s = bfd_get_section_by_name (obfd, ".plt");
12517 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12519 /* This may happen for
12520 o references to TOC base (SYM@toc / TOC[tc0]) without a
12522 o bad linker script
12523 o --gc-sections and empty TOC sections
12525 FIXME: Warn user? */
12527 /* Look for a likely section. We probably won't even be
12529 for (s = obfd->sections; s != NULL; s = s->next)
12530 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12532 == (SEC_ALLOC | SEC_SMALL_DATA))
12535 for (s = obfd->sections; s != NULL; s = s->next)
12536 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12537 == (SEC_ALLOC | SEC_SMALL_DATA))
12540 for (s = obfd->sections; s != NULL; s = s->next)
12541 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12545 for (s = obfd->sections; s != NULL; s = s->next)
12546 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12552 TOCstart = s->output_section->vma + s->output_offset;
12554 _bfd_set_gp_value (obfd, TOCstart);
12556 if (info != NULL && s != NULL)
12558 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12562 if (htab->elf.hgot != NULL)
12564 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12565 htab->elf.hgot->root.u.def.section = s;
12570 struct bfd_link_hash_entry *bh = NULL;
12571 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12572 s, TOC_BASE_OFF, NULL, FALSE,
12579 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12580 write out any global entry stubs. */
12583 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12585 struct bfd_link_info *info;
12586 struct ppc_link_hash_table *htab;
12587 struct plt_entry *pent;
12590 if (h->root.type == bfd_link_hash_indirect)
12593 if (!h->pointer_equality_needed)
12596 if (h->def_regular)
12600 htab = ppc_hash_table (info);
12605 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12606 if (pent->plt.offset != (bfd_vma) -1
12607 && pent->addend == 0)
12613 p = s->contents + h->root.u.def.value;
12614 plt = htab->elf.splt;
12615 if (!htab->elf.dynamic_sections_created
12616 || h->dynindx == -1)
12617 plt = htab->elf.iplt;
12618 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12619 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12621 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12623 info->callbacks->einfo
12624 (_("%P: linkage table error against `%T'\n"),
12625 h->root.root.string);
12626 bfd_set_error (bfd_error_bad_value);
12627 htab->stub_error = TRUE;
12630 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12631 if (htab->params->emit_stub_syms)
12633 size_t len = strlen (h->root.root.string);
12634 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12639 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12640 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12643 if (h->root.type == bfd_link_hash_new)
12645 h->root.type = bfd_link_hash_defined;
12646 h->root.u.def.section = s;
12647 h->root.u.def.value = p - s->contents;
12648 h->ref_regular = 1;
12649 h->def_regular = 1;
12650 h->ref_regular_nonweak = 1;
12651 h->forced_local = 1;
12656 if (PPC_HA (off) != 0)
12658 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12661 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12663 bfd_put_32 (s->owner, MTCTR_R12, p);
12665 bfd_put_32 (s->owner, BCTR, p);
12671 /* Build all the stubs associated with the current output file.
12672 The stubs are kept in a hash table attached to the main linker
12673 hash table. This function is called via gldelf64ppc_finish. */
12676 ppc64_elf_build_stubs (struct bfd_link_info *info,
12679 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12680 asection *stub_sec;
12682 int stub_sec_count = 0;
12687 /* Allocate memory to hold the linker stubs. */
12688 for (stub_sec = htab->params->stub_bfd->sections;
12690 stub_sec = stub_sec->next)
12691 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12692 && stub_sec->size != 0)
12694 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12695 if (stub_sec->contents == NULL)
12697 /* We want to check that built size is the same as calculated
12698 size. rawsize is a convenient location to use. */
12699 stub_sec->rawsize = stub_sec->size;
12700 stub_sec->size = 0;
12703 if (htab->glink != NULL && htab->glink->size != 0)
12708 /* Build the .glink plt call stub. */
12709 if (htab->params->emit_stub_syms)
12711 struct elf_link_hash_entry *h;
12712 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12713 TRUE, FALSE, FALSE);
12716 if (h->root.type == bfd_link_hash_new)
12718 h->root.type = bfd_link_hash_defined;
12719 h->root.u.def.section = htab->glink;
12720 h->root.u.def.value = 8;
12721 h->ref_regular = 1;
12722 h->def_regular = 1;
12723 h->ref_regular_nonweak = 1;
12724 h->forced_local = 1;
12728 plt0 = (htab->elf.splt->output_section->vma
12729 + htab->elf.splt->output_offset
12731 if (info->emitrelocations)
12733 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12736 r->r_offset = (htab->glink->output_offset
12737 + htab->glink->output_section->vma);
12738 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12739 r->r_addend = plt0;
12741 p = htab->glink->contents;
12742 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12743 bfd_put_64 (htab->glink->owner, plt0, p);
12747 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12749 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12751 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12753 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12755 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12757 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12759 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12761 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12763 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12765 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12770 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12772 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12774 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12776 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12778 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12780 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12782 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12784 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12786 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12788 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12790 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12792 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12795 bfd_put_32 (htab->glink->owner, BCTR, p);
12797 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12799 bfd_put_32 (htab->glink->owner, NOP, p);
12803 /* Build the .glink lazy link call stubs. */
12805 while (p < htab->glink->contents + htab->glink->rawsize)
12811 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12816 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12818 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12823 bfd_put_32 (htab->glink->owner,
12824 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12829 /* Build .glink global entry stubs. */
12830 if (htab->glink->size > htab->glink->rawsize)
12831 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12834 if (htab->brlt != NULL && htab->brlt->size != 0)
12836 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12838 if (htab->brlt->contents == NULL)
12841 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12843 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12844 htab->relbrlt->size);
12845 if (htab->relbrlt->contents == NULL)
12849 /* Build the stubs as directed by the stub hash table. */
12850 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12852 if (htab->relbrlt != NULL)
12853 htab->relbrlt->reloc_count = 0;
12855 if (htab->params->plt_stub_align != 0)
12856 for (stub_sec = htab->params->stub_bfd->sections;
12858 stub_sec = stub_sec->next)
12859 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12860 stub_sec->size = ((stub_sec->size
12861 + (1 << htab->params->plt_stub_align) - 1)
12862 & (-1 << htab->params->plt_stub_align));
12864 for (stub_sec = htab->params->stub_bfd->sections;
12866 stub_sec = stub_sec->next)
12867 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12869 stub_sec_count += 1;
12870 if (stub_sec->rawsize != stub_sec->size)
12874 /* Note that the glink_eh_frame check here is not only testing that
12875 the generated size matched the calculated size but also that
12876 bfd_elf_discard_info didn't make any changes to the section. */
12877 if (stub_sec != NULL
12878 || (htab->glink_eh_frame != NULL
12879 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12881 htab->stub_error = TRUE;
12882 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12885 if (htab->stub_error)
12890 *stats = bfd_malloc (500);
12891 if (*stats == NULL)
12894 sprintf (*stats, _("linker stubs in %u group%s\n"
12896 " toc adjust %lu\n"
12897 " long branch %lu\n"
12898 " long toc adj %lu\n"
12900 " plt call toc %lu\n"
12901 " global entry %lu"),
12903 stub_sec_count == 1 ? "" : "s",
12904 htab->stub_count[ppc_stub_long_branch - 1],
12905 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12906 htab->stub_count[ppc_stub_plt_branch - 1],
12907 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12908 htab->stub_count[ppc_stub_plt_call - 1],
12909 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12910 htab->stub_count[ppc_stub_global_entry - 1]);
12915 /* This function undoes the changes made by add_symbol_adjust. */
12918 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12920 struct ppc_link_hash_entry *eh;
12922 if (h->root.type == bfd_link_hash_indirect)
12925 eh = (struct ppc_link_hash_entry *) h;
12926 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12929 eh->elf.root.type = bfd_link_hash_undefined;
12934 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12936 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12939 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12942 /* What to do when ld finds relocations against symbols defined in
12943 discarded sections. */
12945 static unsigned int
12946 ppc64_elf_action_discarded (asection *sec)
12948 if (strcmp (".opd", sec->name) == 0)
12951 if (strcmp (".toc", sec->name) == 0)
12954 if (strcmp (".toc1", sec->name) == 0)
12957 return _bfd_elf_default_action_discarded (sec);
12960 /* The RELOCATE_SECTION function is called by the ELF backend linker
12961 to handle the relocations for a section.
12963 The relocs are always passed as Rela structures; if the section
12964 actually uses Rel structures, the r_addend field will always be
12967 This function is responsible for adjust the section contents as
12968 necessary, and (if using Rela relocs and generating a
12969 relocatable output file) adjusting the reloc addend as
12972 This function does not have to worry about setting the reloc
12973 address or the reloc symbol index.
12975 LOCAL_SYMS is a pointer to the swapped in local symbols.
12977 LOCAL_SECTIONS is an array giving the section in the input file
12978 corresponding to the st_shndx field of each local symbol.
12980 The global hash table entry for the global symbols can be found
12981 via elf_sym_hashes (input_bfd).
12983 When generating relocatable output, this function must handle
12984 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12985 going to be the section symbol corresponding to the output
12986 section, which means that the addend must be adjusted
12990 ppc64_elf_relocate_section (bfd *output_bfd,
12991 struct bfd_link_info *info,
12993 asection *input_section,
12994 bfd_byte *contents,
12995 Elf_Internal_Rela *relocs,
12996 Elf_Internal_Sym *local_syms,
12997 asection **local_sections)
12999 struct ppc_link_hash_table *htab;
13000 Elf_Internal_Shdr *symtab_hdr;
13001 struct elf_link_hash_entry **sym_hashes;
13002 Elf_Internal_Rela *rel;
13003 Elf_Internal_Rela *relend;
13004 Elf_Internal_Rela outrel;
13006 struct got_entry **local_got_ents;
13008 bfd_boolean ret = TRUE;
13009 bfd_boolean is_opd;
13010 /* Assume 'at' branch hints. */
13011 bfd_boolean is_isa_v2 = TRUE;
13012 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
13014 /* Initialize howto table if needed. */
13015 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13018 htab = ppc_hash_table (info);
13022 /* Don't relocate stub sections. */
13023 if (input_section->owner == htab->params->stub_bfd)
13026 BFD_ASSERT (is_ppc64_elf (input_bfd));
13028 local_got_ents = elf_local_got_ents (input_bfd);
13029 TOCstart = elf_gp (output_bfd);
13030 symtab_hdr = &elf_symtab_hdr (input_bfd);
13031 sym_hashes = elf_sym_hashes (input_bfd);
13032 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13035 relend = relocs + input_section->reloc_count;
13036 for (; rel < relend; rel++)
13038 enum elf_ppc64_reloc_type r_type;
13040 bfd_reloc_status_type r;
13041 Elf_Internal_Sym *sym;
13043 struct elf_link_hash_entry *h_elf;
13044 struct ppc_link_hash_entry *h;
13045 struct ppc_link_hash_entry *fdh;
13046 const char *sym_name;
13047 unsigned long r_symndx, toc_symndx;
13048 bfd_vma toc_addend;
13049 unsigned char tls_mask, tls_gd, tls_type;
13050 unsigned char sym_type;
13051 bfd_vma relocation;
13052 bfd_boolean unresolved_reloc;
13053 bfd_boolean warned;
13054 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13057 struct ppc_stub_hash_entry *stub_entry;
13058 bfd_vma max_br_offset;
13060 const Elf_Internal_Rela orig_rel = *rel;
13061 reloc_howto_type *howto;
13062 struct reloc_howto_struct alt_howto;
13064 r_type = ELF64_R_TYPE (rel->r_info);
13065 r_symndx = ELF64_R_SYM (rel->r_info);
13067 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13068 symbol of the previous ADDR64 reloc. The symbol gives us the
13069 proper TOC base to use. */
13070 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13072 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13074 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13080 unresolved_reloc = FALSE;
13083 if (r_symndx < symtab_hdr->sh_info)
13085 /* It's a local symbol. */
13086 struct _opd_sec_data *opd;
13088 sym = local_syms + r_symndx;
13089 sec = local_sections[r_symndx];
13090 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13091 sym_type = ELF64_ST_TYPE (sym->st_info);
13092 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13093 opd = get_opd_info (sec);
13094 if (opd != NULL && opd->adjust != NULL)
13096 long adjust = opd->adjust[OPD_NDX (sym->st_value
13102 /* If this is a relocation against the opd section sym
13103 and we have edited .opd, adjust the reloc addend so
13104 that ld -r and ld --emit-relocs output is correct.
13105 If it is a reloc against some other .opd symbol,
13106 then the symbol value will be adjusted later. */
13107 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13108 rel->r_addend += adjust;
13110 relocation += adjust;
13116 bfd_boolean ignored;
13118 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13119 r_symndx, symtab_hdr, sym_hashes,
13120 h_elf, sec, relocation,
13121 unresolved_reloc, warned, ignored);
13122 sym_name = h_elf->root.root.string;
13123 sym_type = h_elf->type;
13125 && sec->owner == output_bfd
13126 && strcmp (sec->name, ".opd") == 0)
13128 /* This is a symbol defined in a linker script. All
13129 such are defined in output sections, even those
13130 defined by simple assignment from a symbol defined in
13131 an input section. Transfer the symbol to an
13132 appropriate input .opd section, so that a branch to
13133 this symbol will be mapped to the location specified
13134 by the opd entry. */
13135 struct bfd_link_order *lo;
13136 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13137 if (lo->type == bfd_indirect_link_order)
13139 asection *isec = lo->u.indirect.section;
13140 if (h_elf->root.u.def.value >= isec->output_offset
13141 && h_elf->root.u.def.value < (isec->output_offset
13144 h_elf->root.u.def.value -= isec->output_offset;
13145 h_elf->root.u.def.section = isec;
13152 h = (struct ppc_link_hash_entry *) h_elf;
13154 if (sec != NULL && discarded_section (sec))
13155 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13157 ppc64_elf_howto_table[r_type], 0,
13160 if (info->relocatable)
13163 if (h != NULL && &h->elf == htab->elf.hgot)
13165 relocation = (TOCstart
13166 + htab->stub_group[input_section->id].toc_off);
13167 sec = bfd_abs_section_ptr;
13168 unresolved_reloc = FALSE;
13171 /* TLS optimizations. Replace instruction sequences and relocs
13172 based on information we collected in tls_optimize. We edit
13173 RELOCS so that --emit-relocs will output something sensible
13174 for the final instruction stream. */
13179 tls_mask = h->tls_mask;
13180 else if (local_got_ents != NULL)
13182 struct plt_entry **local_plt = (struct plt_entry **)
13183 (local_got_ents + symtab_hdr->sh_info);
13184 unsigned char *lgot_masks = (unsigned char *)
13185 (local_plt + symtab_hdr->sh_info);
13186 tls_mask = lgot_masks[r_symndx];
13189 && (r_type == R_PPC64_TLS
13190 || r_type == R_PPC64_TLSGD
13191 || r_type == R_PPC64_TLSLD))
13193 /* Check for toc tls entries. */
13194 unsigned char *toc_tls;
13196 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13197 &local_syms, rel, input_bfd))
13201 tls_mask = *toc_tls;
13204 /* Check that tls relocs are used with tls syms, and non-tls
13205 relocs are used with non-tls syms. */
13206 if (r_symndx != STN_UNDEF
13207 && r_type != R_PPC64_NONE
13209 || h->elf.root.type == bfd_link_hash_defined
13210 || h->elf.root.type == bfd_link_hash_defweak)
13211 && (IS_PPC64_TLS_RELOC (r_type)
13212 != (sym_type == STT_TLS
13213 || (sym_type == STT_SECTION
13214 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13217 && (r_type == R_PPC64_TLS
13218 || r_type == R_PPC64_TLSGD
13219 || r_type == R_PPC64_TLSLD))
13220 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13223 info->callbacks->einfo
13224 (!IS_PPC64_TLS_RELOC (r_type)
13225 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13226 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13227 input_bfd, input_section, rel->r_offset,
13228 ppc64_elf_howto_table[r_type]->name,
13232 /* Ensure reloc mapping code below stays sane. */
13233 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13234 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13235 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13236 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13237 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13238 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13239 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13240 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13241 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13242 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13250 case R_PPC64_LO_DS_OPT:
13251 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13252 if ((insn & (0x3f << 26)) != 58u << 26)
13254 insn += (14u << 26) - (58u << 26);
13255 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13256 r_type = R_PPC64_TOC16_LO;
13257 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13260 case R_PPC64_TOC16:
13261 case R_PPC64_TOC16_LO:
13262 case R_PPC64_TOC16_DS:
13263 case R_PPC64_TOC16_LO_DS:
13265 /* Check for toc tls entries. */
13266 unsigned char *toc_tls;
13269 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13270 &local_syms, rel, input_bfd);
13276 tls_mask = *toc_tls;
13277 if (r_type == R_PPC64_TOC16_DS
13278 || r_type == R_PPC64_TOC16_LO_DS)
13281 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13286 /* If we found a GD reloc pair, then we might be
13287 doing a GD->IE transition. */
13290 tls_gd = TLS_TPRELGD;
13291 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13294 else if (retval == 3)
13296 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13304 case R_PPC64_GOT_TPREL16_HI:
13305 case R_PPC64_GOT_TPREL16_HA:
13307 && (tls_mask & TLS_TPREL) == 0)
13309 rel->r_offset -= d_offset;
13310 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13311 r_type = R_PPC64_NONE;
13312 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13316 case R_PPC64_GOT_TPREL16_DS:
13317 case R_PPC64_GOT_TPREL16_LO_DS:
13319 && (tls_mask & TLS_TPREL) == 0)
13322 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13324 insn |= 0x3c0d0000; /* addis 0,13,0 */
13325 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13326 r_type = R_PPC64_TPREL16_HA;
13327 if (toc_symndx != 0)
13329 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13330 rel->r_addend = toc_addend;
13331 /* We changed the symbol. Start over in order to
13332 get h, sym, sec etc. right. */
13337 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13343 && (tls_mask & TLS_TPREL) == 0)
13345 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13346 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13349 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13350 /* Was PPC64_TLS which sits on insn boundary, now
13351 PPC64_TPREL16_LO which is at low-order half-word. */
13352 rel->r_offset += d_offset;
13353 r_type = R_PPC64_TPREL16_LO;
13354 if (toc_symndx != 0)
13356 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13357 rel->r_addend = toc_addend;
13358 /* We changed the symbol. Start over in order to
13359 get h, sym, sec etc. right. */
13364 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13368 case R_PPC64_GOT_TLSGD16_HI:
13369 case R_PPC64_GOT_TLSGD16_HA:
13370 tls_gd = TLS_TPRELGD;
13371 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13375 case R_PPC64_GOT_TLSLD16_HI:
13376 case R_PPC64_GOT_TLSLD16_HA:
13377 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13380 if ((tls_mask & tls_gd) != 0)
13381 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13382 + R_PPC64_GOT_TPREL16_DS);
13385 rel->r_offset -= d_offset;
13386 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13387 r_type = R_PPC64_NONE;
13389 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13393 case R_PPC64_GOT_TLSGD16:
13394 case R_PPC64_GOT_TLSGD16_LO:
13395 tls_gd = TLS_TPRELGD;
13396 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13400 case R_PPC64_GOT_TLSLD16:
13401 case R_PPC64_GOT_TLSLD16_LO:
13402 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13404 unsigned int insn1, insn2, insn3;
13408 offset = (bfd_vma) -1;
13409 /* If not using the newer R_PPC64_TLSGD/LD to mark
13410 __tls_get_addr calls, we must trust that the call
13411 stays with its arg setup insns, ie. that the next
13412 reloc is the __tls_get_addr call associated with
13413 the current reloc. Edit both insns. */
13414 if (input_section->has_tls_get_addr_call
13415 && rel + 1 < relend
13416 && branch_reloc_hash_match (input_bfd, rel + 1,
13417 htab->tls_get_addr,
13418 htab->tls_get_addr_fd))
13419 offset = rel[1].r_offset;
13420 if ((tls_mask & tls_gd) != 0)
13423 insn1 = bfd_get_32 (output_bfd,
13424 contents + rel->r_offset - d_offset);
13425 insn1 &= (1 << 26) - (1 << 2);
13426 insn1 |= 58 << 26; /* ld */
13427 insn2 = 0x7c636a14; /* add 3,3,13 */
13428 if (offset != (bfd_vma) -1)
13429 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13430 if ((tls_mask & TLS_EXPLICIT) == 0)
13431 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13432 + R_PPC64_GOT_TPREL16_DS);
13434 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13435 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13440 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13441 insn2 = 0x38630000; /* addi 3,3,0 */
13444 /* Was an LD reloc. */
13446 sec = local_sections[toc_symndx];
13448 r_symndx < symtab_hdr->sh_info;
13450 if (local_sections[r_symndx] == sec)
13452 if (r_symndx >= symtab_hdr->sh_info)
13453 r_symndx = STN_UNDEF;
13454 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13455 if (r_symndx != STN_UNDEF)
13456 rel->r_addend -= (local_syms[r_symndx].st_value
13457 + sec->output_offset
13458 + sec->output_section->vma);
13460 else if (toc_symndx != 0)
13462 r_symndx = toc_symndx;
13463 rel->r_addend = toc_addend;
13465 r_type = R_PPC64_TPREL16_HA;
13466 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13467 if (offset != (bfd_vma) -1)
13469 rel[1].r_info = ELF64_R_INFO (r_symndx,
13470 R_PPC64_TPREL16_LO);
13471 rel[1].r_offset = offset + d_offset;
13472 rel[1].r_addend = rel->r_addend;
13475 bfd_put_32 (output_bfd, insn1,
13476 contents + rel->r_offset - d_offset);
13477 if (offset != (bfd_vma) -1)
13479 insn3 = bfd_get_32 (output_bfd,
13480 contents + offset + 4);
13482 || insn3 == CROR_151515 || insn3 == CROR_313131)
13484 rel[1].r_offset += 4;
13485 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13488 bfd_put_32 (output_bfd, insn2, contents + offset);
13490 if ((tls_mask & tls_gd) == 0
13491 && (tls_gd == 0 || toc_symndx != 0))
13493 /* We changed the symbol. Start over in order
13494 to get h, sym, sec etc. right. */
13501 case R_PPC64_TLSGD:
13502 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13504 unsigned int insn2, insn3;
13505 bfd_vma offset = rel->r_offset;
13507 if ((tls_mask & TLS_TPRELGD) != 0)
13510 r_type = R_PPC64_NONE;
13511 insn2 = 0x7c636a14; /* add 3,3,13 */
13516 if (toc_symndx != 0)
13518 r_symndx = toc_symndx;
13519 rel->r_addend = toc_addend;
13521 r_type = R_PPC64_TPREL16_LO;
13522 rel->r_offset = offset + d_offset;
13523 insn2 = 0x38630000; /* addi 3,3,0 */
13525 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13526 /* Zap the reloc on the _tls_get_addr call too. */
13527 BFD_ASSERT (offset == rel[1].r_offset);
13528 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13529 insn3 = bfd_get_32 (output_bfd,
13530 contents + offset + 4);
13532 || insn3 == CROR_151515 || insn3 == CROR_313131)
13534 rel->r_offset += 4;
13535 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13538 bfd_put_32 (output_bfd, insn2, contents + offset);
13539 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13547 case R_PPC64_TLSLD:
13548 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13550 unsigned int insn2, insn3;
13551 bfd_vma offset = rel->r_offset;
13554 sec = local_sections[toc_symndx];
13556 r_symndx < symtab_hdr->sh_info;
13558 if (local_sections[r_symndx] == sec)
13560 if (r_symndx >= symtab_hdr->sh_info)
13561 r_symndx = STN_UNDEF;
13562 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13563 if (r_symndx != STN_UNDEF)
13564 rel->r_addend -= (local_syms[r_symndx].st_value
13565 + sec->output_offset
13566 + sec->output_section->vma);
13568 r_type = R_PPC64_TPREL16_LO;
13569 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13570 rel->r_offset = offset + d_offset;
13571 /* Zap the reloc on the _tls_get_addr call too. */
13572 BFD_ASSERT (offset == rel[1].r_offset);
13573 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13574 insn2 = 0x38630000; /* addi 3,3,0 */
13575 insn3 = bfd_get_32 (output_bfd,
13576 contents + offset + 4);
13578 || insn3 == CROR_151515 || insn3 == CROR_313131)
13580 rel->r_offset += 4;
13581 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13584 bfd_put_32 (output_bfd, insn2, contents + offset);
13590 case R_PPC64_DTPMOD64:
13591 if (rel + 1 < relend
13592 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13593 && rel[1].r_offset == rel->r_offset + 8)
13595 if ((tls_mask & TLS_GD) == 0)
13597 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13598 if ((tls_mask & TLS_TPRELGD) != 0)
13599 r_type = R_PPC64_TPREL64;
13602 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13603 r_type = R_PPC64_NONE;
13605 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13610 if ((tls_mask & TLS_LD) == 0)
13612 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13613 r_type = R_PPC64_NONE;
13614 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13619 case R_PPC64_TPREL64:
13620 if ((tls_mask & TLS_TPREL) == 0)
13622 r_type = R_PPC64_NONE;
13623 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13627 case R_PPC64_REL16_HA:
13628 /* If we are generating a non-PIC executable, edit
13629 . 0: addis 2,12,.TOC.-0b@ha
13630 . addi 2,2,.TOC.-0b@l
13631 used by ELFv2 global entry points to set up r2, to
13634 if .TOC. is in range. */
13636 && !info->traditional_format
13637 && h != NULL && &h->elf == htab->elf.hgot
13638 && rel + 1 < relend
13639 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13640 && rel[1].r_offset == rel->r_offset + 4
13641 && rel[1].r_addend == rel->r_addend + 4
13642 && relocation + 0x80008000 <= 0xffffffff)
13644 unsigned int insn1, insn2;
13645 bfd_vma offset = rel->r_offset - d_offset;
13646 insn1 = bfd_get_32 (output_bfd, contents + offset);
13647 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13648 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13649 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13651 r_type = R_PPC64_ADDR16_HA;
13652 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13653 rel->r_addend -= d_offset;
13654 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13655 rel[1].r_addend -= d_offset + 4;
13656 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13662 /* Handle other relocations that tweak non-addend part of insn. */
13664 max_br_offset = 1 << 25;
13665 addend = rel->r_addend;
13666 reloc_dest = DEST_NORMAL;
13672 case R_PPC64_TOCSAVE:
13673 if (relocation + addend == (rel->r_offset
13674 + input_section->output_offset
13675 + input_section->output_section->vma)
13676 && tocsave_find (htab, NO_INSERT,
13677 &local_syms, rel, input_bfd))
13679 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13681 || insn == CROR_151515 || insn == CROR_313131)
13682 bfd_put_32 (input_bfd,
13683 STD_R2_0R1 + STK_TOC (htab),
13684 contents + rel->r_offset);
13688 /* Branch taken prediction relocations. */
13689 case R_PPC64_ADDR14_BRTAKEN:
13690 case R_PPC64_REL14_BRTAKEN:
13691 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13694 /* Branch not taken prediction relocations. */
13695 case R_PPC64_ADDR14_BRNTAKEN:
13696 case R_PPC64_REL14_BRNTAKEN:
13697 insn |= bfd_get_32 (output_bfd,
13698 contents + rel->r_offset) & ~(0x01 << 21);
13701 case R_PPC64_REL14:
13702 max_br_offset = 1 << 15;
13705 case R_PPC64_REL24:
13706 /* Calls to functions with a different TOC, such as calls to
13707 shared objects, need to alter the TOC pointer. This is
13708 done using a linkage stub. A REL24 branching to these
13709 linkage stubs needs to be followed by a nop, as the nop
13710 will be replaced with an instruction to restore the TOC
13715 && h->oh->is_func_descriptor)
13716 fdh = ppc_follow_link (h->oh);
13717 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13719 if (stub_entry != NULL
13720 && (stub_entry->stub_type == ppc_stub_plt_call
13721 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13722 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13723 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13725 bfd_boolean can_plt_call = FALSE;
13727 /* All of these stubs will modify r2, so there must be a
13728 branch and link followed by a nop. The nop is
13729 replaced by an insn to restore r2. */
13730 if (rel->r_offset + 8 <= input_section->size)
13734 br = bfd_get_32 (input_bfd,
13735 contents + rel->r_offset);
13740 nop = bfd_get_32 (input_bfd,
13741 contents + rel->r_offset + 4);
13743 || nop == CROR_151515 || nop == CROR_313131)
13746 && (h == htab->tls_get_addr_fd
13747 || h == htab->tls_get_addr)
13748 && !htab->params->no_tls_get_addr_opt)
13750 /* Special stub used, leave nop alone. */
13753 bfd_put_32 (input_bfd,
13754 LD_R2_0R1 + STK_TOC (htab),
13755 contents + rel->r_offset + 4);
13756 can_plt_call = TRUE;
13761 if (!can_plt_call && h != NULL)
13763 const char *name = h->elf.root.root.string;
13768 if (strncmp (name, "__libc_start_main", 17) == 0
13769 && (name[17] == 0 || name[17] == '@'))
13771 /* Allow crt1 branch to go via a toc adjusting
13772 stub. Other calls that never return could do
13773 the same, if we could detect such. */
13774 can_plt_call = TRUE;
13780 /* g++ as of 20130507 emits self-calls without a
13781 following nop. This is arguably wrong since we
13782 have conflicting information. On the one hand a
13783 global symbol and on the other a local call
13784 sequence, but don't error for this special case.
13785 It isn't possible to cheaply verify we have
13786 exactly such a call. Allow all calls to the same
13788 asection *code_sec = sec;
13790 if (get_opd_info (sec) != NULL)
13792 bfd_vma off = (relocation + addend
13793 - sec->output_section->vma
13794 - sec->output_offset);
13796 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13798 if (code_sec == input_section)
13799 can_plt_call = TRUE;
13804 if (stub_entry->stub_type == ppc_stub_plt_call
13805 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13806 info->callbacks->einfo
13807 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13808 "recompile with -fPIC\n"),
13809 input_bfd, input_section, rel->r_offset, sym_name);
13811 info->callbacks->einfo
13812 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13813 "(-mcmodel=small toc adjust stub)\n"),
13814 input_bfd, input_section, rel->r_offset, sym_name);
13816 bfd_set_error (bfd_error_bad_value);
13821 && (stub_entry->stub_type == ppc_stub_plt_call
13822 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13823 unresolved_reloc = FALSE;
13826 if ((stub_entry == NULL
13827 || stub_entry->stub_type == ppc_stub_long_branch
13828 || stub_entry->stub_type == ppc_stub_plt_branch)
13829 && get_opd_info (sec) != NULL)
13831 /* The branch destination is the value of the opd entry. */
13832 bfd_vma off = (relocation + addend
13833 - sec->output_section->vma
13834 - sec->output_offset);
13835 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13836 if (dest != (bfd_vma) -1)
13840 reloc_dest = DEST_OPD;
13844 /* If the branch is out of reach we ought to have a long
13846 from = (rel->r_offset
13847 + input_section->output_offset
13848 + input_section->output_section->vma);
13850 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13854 if (stub_entry != NULL
13855 && (stub_entry->stub_type == ppc_stub_long_branch
13856 || stub_entry->stub_type == ppc_stub_plt_branch)
13857 && (r_type == R_PPC64_ADDR14_BRTAKEN
13858 || r_type == R_PPC64_ADDR14_BRNTAKEN
13859 || (relocation + addend - from + max_br_offset
13860 < 2 * max_br_offset)))
13861 /* Don't use the stub if this branch is in range. */
13864 if (stub_entry != NULL)
13866 /* Munge up the value and addend so that we call the stub
13867 rather than the procedure directly. */
13868 relocation = (stub_entry->stub_offset
13869 + stub_entry->stub_sec->output_offset
13870 + stub_entry->stub_sec->output_section->vma);
13872 reloc_dest = DEST_STUB;
13874 if ((stub_entry->stub_type == ppc_stub_plt_call
13875 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13876 && (ALWAYS_EMIT_R2SAVE
13877 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13878 && rel + 1 < relend
13879 && rel[1].r_offset == rel->r_offset + 4
13880 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13888 /* Set 'a' bit. This is 0b00010 in BO field for branch
13889 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13890 for branch on CTR insns (BO == 1a00t or 1a01t). */
13891 if ((insn & (0x14 << 21)) == (0x04 << 21))
13892 insn |= 0x02 << 21;
13893 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13894 insn |= 0x08 << 21;
13900 /* Invert 'y' bit if not the default. */
13901 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13902 insn ^= 0x01 << 21;
13905 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13908 /* NOP out calls to undefined weak functions.
13909 We can thus call a weak function without first
13910 checking whether the function is defined. */
13912 && h->elf.root.type == bfd_link_hash_undefweak
13913 && h->elf.dynindx == -1
13914 && r_type == R_PPC64_REL24
13918 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13924 /* Set `addend'. */
13929 info->callbacks->einfo
13930 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13931 input_bfd, (int) r_type, sym_name);
13933 bfd_set_error (bfd_error_bad_value);
13939 case R_PPC64_TLSGD:
13940 case R_PPC64_TLSLD:
13941 case R_PPC64_TOCSAVE:
13942 case R_PPC64_GNU_VTINHERIT:
13943 case R_PPC64_GNU_VTENTRY:
13946 /* GOT16 relocations. Like an ADDR16 using the symbol's
13947 address in the GOT as relocation value instead of the
13948 symbol's value itself. Also, create a GOT entry for the
13949 symbol and put the symbol value there. */
13950 case R_PPC64_GOT_TLSGD16:
13951 case R_PPC64_GOT_TLSGD16_LO:
13952 case R_PPC64_GOT_TLSGD16_HI:
13953 case R_PPC64_GOT_TLSGD16_HA:
13954 tls_type = TLS_TLS | TLS_GD;
13957 case R_PPC64_GOT_TLSLD16:
13958 case R_PPC64_GOT_TLSLD16_LO:
13959 case R_PPC64_GOT_TLSLD16_HI:
13960 case R_PPC64_GOT_TLSLD16_HA:
13961 tls_type = TLS_TLS | TLS_LD;
13964 case R_PPC64_GOT_TPREL16_DS:
13965 case R_PPC64_GOT_TPREL16_LO_DS:
13966 case R_PPC64_GOT_TPREL16_HI:
13967 case R_PPC64_GOT_TPREL16_HA:
13968 tls_type = TLS_TLS | TLS_TPREL;
13971 case R_PPC64_GOT_DTPREL16_DS:
13972 case R_PPC64_GOT_DTPREL16_LO_DS:
13973 case R_PPC64_GOT_DTPREL16_HI:
13974 case R_PPC64_GOT_DTPREL16_HA:
13975 tls_type = TLS_TLS | TLS_DTPREL;
13978 case R_PPC64_GOT16:
13979 case R_PPC64_GOT16_LO:
13980 case R_PPC64_GOT16_HI:
13981 case R_PPC64_GOT16_HA:
13982 case R_PPC64_GOT16_DS:
13983 case R_PPC64_GOT16_LO_DS:
13986 /* Relocation is to the entry for this symbol in the global
13991 unsigned long indx = 0;
13992 struct got_entry *ent;
13994 if (tls_type == (TLS_TLS | TLS_LD)
13996 || !h->elf.def_dynamic))
13997 ent = ppc64_tlsld_got (input_bfd);
14003 bfd_boolean dyn = htab->elf.dynamic_sections_created;
14004 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
14007 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
14008 /* This is actually a static link, or it is a
14009 -Bsymbolic link and the symbol is defined
14010 locally, or the symbol was forced to be local
14011 because of a version file. */
14015 BFD_ASSERT (h->elf.dynindx != -1);
14016 indx = h->elf.dynindx;
14017 unresolved_reloc = FALSE;
14019 ent = h->elf.got.glist;
14023 if (local_got_ents == NULL)
14025 ent = local_got_ents[r_symndx];
14028 for (; ent != NULL; ent = ent->next)
14029 if (ent->addend == orig_rel.r_addend
14030 && ent->owner == input_bfd
14031 && ent->tls_type == tls_type)
14037 if (ent->is_indirect)
14038 ent = ent->got.ent;
14039 offp = &ent->got.offset;
14040 got = ppc64_elf_tdata (ent->owner)->got;
14044 /* The offset must always be a multiple of 8. We use the
14045 least significant bit to record whether we have already
14046 processed this entry. */
14048 if ((off & 1) != 0)
14052 /* Generate relocs for the dynamic linker, except in
14053 the case of TLSLD where we'll use one entry per
14061 ? h->elf.type == STT_GNU_IFUNC
14062 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14064 relgot = htab->elf.irelplt;
14065 else if ((info->shared || indx != 0)
14067 || (tls_type == (TLS_TLS | TLS_LD)
14068 && !h->elf.def_dynamic)
14069 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14070 || h->elf.root.type != bfd_link_hash_undefweak))
14071 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14072 if (relgot != NULL)
14074 outrel.r_offset = (got->output_section->vma
14075 + got->output_offset
14077 outrel.r_addend = addend;
14078 if (tls_type & (TLS_LD | TLS_GD))
14080 outrel.r_addend = 0;
14081 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14082 if (tls_type == (TLS_TLS | TLS_GD))
14084 loc = relgot->contents;
14085 loc += (relgot->reloc_count++
14086 * sizeof (Elf64_External_Rela));
14087 bfd_elf64_swap_reloca_out (output_bfd,
14089 outrel.r_offset += 8;
14090 outrel.r_addend = addend;
14092 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14095 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14096 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14097 else if (tls_type == (TLS_TLS | TLS_TPREL))
14098 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14099 else if (indx != 0)
14100 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14104 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14106 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14108 /* Write the .got section contents for the sake
14110 loc = got->contents + off;
14111 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14115 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14117 outrel.r_addend += relocation;
14118 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14119 outrel.r_addend -= htab->elf.tls_sec->vma;
14121 loc = relgot->contents;
14122 loc += (relgot->reloc_count++
14123 * sizeof (Elf64_External_Rela));
14124 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14127 /* Init the .got section contents here if we're not
14128 emitting a reloc. */
14131 relocation += addend;
14132 if (tls_type == (TLS_TLS | TLS_LD))
14134 else if (tls_type != 0)
14136 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14137 if (tls_type == (TLS_TLS | TLS_TPREL))
14138 relocation += DTP_OFFSET - TP_OFFSET;
14140 if (tls_type == (TLS_TLS | TLS_GD))
14142 bfd_put_64 (output_bfd, relocation,
14143 got->contents + off + 8);
14148 bfd_put_64 (output_bfd, relocation,
14149 got->contents + off);
14153 if (off >= (bfd_vma) -2)
14156 relocation = got->output_section->vma + got->output_offset + off;
14157 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14161 case R_PPC64_PLT16_HA:
14162 case R_PPC64_PLT16_HI:
14163 case R_PPC64_PLT16_LO:
14164 case R_PPC64_PLT32:
14165 case R_PPC64_PLT64:
14166 /* Relocation is to the entry for this symbol in the
14167 procedure linkage table. */
14169 /* Resolve a PLT reloc against a local symbol directly,
14170 without using the procedure linkage table. */
14174 /* It's possible that we didn't make a PLT entry for this
14175 symbol. This happens when statically linking PIC code,
14176 or when using -Bsymbolic. Go find a match if there is a
14178 if (htab->elf.splt != NULL)
14180 struct plt_entry *ent;
14181 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14182 if (ent->plt.offset != (bfd_vma) -1
14183 && ent->addend == orig_rel.r_addend)
14185 relocation = (htab->elf.splt->output_section->vma
14186 + htab->elf.splt->output_offset
14187 + ent->plt.offset);
14188 unresolved_reloc = FALSE;
14195 /* Relocation value is TOC base. */
14196 relocation = TOCstart;
14197 if (r_symndx == STN_UNDEF)
14198 relocation += htab->stub_group[input_section->id].toc_off;
14199 else if (unresolved_reloc)
14201 else if (sec != NULL && sec->id <= htab->top_id)
14202 relocation += htab->stub_group[sec->id].toc_off;
14204 unresolved_reloc = TRUE;
14207 /* TOC16 relocs. We want the offset relative to the TOC base,
14208 which is the address of the start of the TOC plus 0x8000.
14209 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14211 case R_PPC64_TOC16:
14212 case R_PPC64_TOC16_LO:
14213 case R_PPC64_TOC16_HI:
14214 case R_PPC64_TOC16_DS:
14215 case R_PPC64_TOC16_LO_DS:
14216 case R_PPC64_TOC16_HA:
14217 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14220 /* Relocate against the beginning of the section. */
14221 case R_PPC64_SECTOFF:
14222 case R_PPC64_SECTOFF_LO:
14223 case R_PPC64_SECTOFF_HI:
14224 case R_PPC64_SECTOFF_DS:
14225 case R_PPC64_SECTOFF_LO_DS:
14226 case R_PPC64_SECTOFF_HA:
14228 addend -= sec->output_section->vma;
14231 case R_PPC64_REL16:
14232 case R_PPC64_REL16_LO:
14233 case R_PPC64_REL16_HI:
14234 case R_PPC64_REL16_HA:
14237 case R_PPC64_REL14:
14238 case R_PPC64_REL14_BRNTAKEN:
14239 case R_PPC64_REL14_BRTAKEN:
14240 case R_PPC64_REL24:
14243 case R_PPC64_TPREL16:
14244 case R_PPC64_TPREL16_LO:
14245 case R_PPC64_TPREL16_HI:
14246 case R_PPC64_TPREL16_HA:
14247 case R_PPC64_TPREL16_DS:
14248 case R_PPC64_TPREL16_LO_DS:
14249 case R_PPC64_TPREL16_HIGH:
14250 case R_PPC64_TPREL16_HIGHA:
14251 case R_PPC64_TPREL16_HIGHER:
14252 case R_PPC64_TPREL16_HIGHERA:
14253 case R_PPC64_TPREL16_HIGHEST:
14254 case R_PPC64_TPREL16_HIGHESTA:
14256 && h->elf.root.type == bfd_link_hash_undefweak
14257 && h->elf.dynindx == -1)
14259 /* Make this relocation against an undefined weak symbol
14260 resolve to zero. This is really just a tweak, since
14261 code using weak externs ought to check that they are
14262 defined before using them. */
14263 bfd_byte *p = contents + rel->r_offset - d_offset;
14265 insn = bfd_get_32 (output_bfd, p);
14266 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14268 bfd_put_32 (output_bfd, insn, p);
14271 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14273 /* The TPREL16 relocs shouldn't really be used in shared
14274 libs as they will result in DT_TEXTREL being set, but
14275 support them anyway. */
14279 case R_PPC64_DTPREL16:
14280 case R_PPC64_DTPREL16_LO:
14281 case R_PPC64_DTPREL16_HI:
14282 case R_PPC64_DTPREL16_HA:
14283 case R_PPC64_DTPREL16_DS:
14284 case R_PPC64_DTPREL16_LO_DS:
14285 case R_PPC64_DTPREL16_HIGH:
14286 case R_PPC64_DTPREL16_HIGHA:
14287 case R_PPC64_DTPREL16_HIGHER:
14288 case R_PPC64_DTPREL16_HIGHERA:
14289 case R_PPC64_DTPREL16_HIGHEST:
14290 case R_PPC64_DTPREL16_HIGHESTA:
14291 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14294 case R_PPC64_ADDR64_LOCAL:
14295 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14300 case R_PPC64_DTPMOD64:
14305 case R_PPC64_TPREL64:
14306 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14309 case R_PPC64_DTPREL64:
14310 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14313 /* Relocations that may need to be propagated if this is a
14315 case R_PPC64_REL30:
14316 case R_PPC64_REL32:
14317 case R_PPC64_REL64:
14318 case R_PPC64_ADDR14:
14319 case R_PPC64_ADDR14_BRNTAKEN:
14320 case R_PPC64_ADDR14_BRTAKEN:
14321 case R_PPC64_ADDR16:
14322 case R_PPC64_ADDR16_DS:
14323 case R_PPC64_ADDR16_HA:
14324 case R_PPC64_ADDR16_HI:
14325 case R_PPC64_ADDR16_HIGH:
14326 case R_PPC64_ADDR16_HIGHA:
14327 case R_PPC64_ADDR16_HIGHER:
14328 case R_PPC64_ADDR16_HIGHERA:
14329 case R_PPC64_ADDR16_HIGHEST:
14330 case R_PPC64_ADDR16_HIGHESTA:
14331 case R_PPC64_ADDR16_LO:
14332 case R_PPC64_ADDR16_LO_DS:
14333 case R_PPC64_ADDR24:
14334 case R_PPC64_ADDR32:
14335 case R_PPC64_ADDR64:
14336 case R_PPC64_UADDR16:
14337 case R_PPC64_UADDR32:
14338 case R_PPC64_UADDR64:
14340 if ((input_section->flags & SEC_ALLOC) == 0)
14343 if (NO_OPD_RELOCS && is_opd)
14348 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14349 || h->elf.root.type != bfd_link_hash_undefweak)
14350 && (must_be_dyn_reloc (info, r_type)
14351 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14352 || (ELIMINATE_COPY_RELOCS
14355 && h->elf.dynindx != -1
14356 && !h->elf.non_got_ref
14357 && !h->elf.def_regular)
14360 ? h->elf.type == STT_GNU_IFUNC
14361 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14363 bfd_boolean skip, relocate;
14367 /* When generating a dynamic object, these relocations
14368 are copied into the output file to be resolved at run
14374 out_off = _bfd_elf_section_offset (output_bfd, info,
14375 input_section, rel->r_offset);
14376 if (out_off == (bfd_vma) -1)
14378 else if (out_off == (bfd_vma) -2)
14379 skip = TRUE, relocate = TRUE;
14380 out_off += (input_section->output_section->vma
14381 + input_section->output_offset);
14382 outrel.r_offset = out_off;
14383 outrel.r_addend = rel->r_addend;
14385 /* Optimize unaligned reloc use. */
14386 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14387 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14388 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14389 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14390 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14391 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14392 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14393 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14394 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14397 memset (&outrel, 0, sizeof outrel);
14398 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14400 && r_type != R_PPC64_TOC)
14402 BFD_ASSERT (h->elf.dynindx != -1);
14403 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14407 /* This symbol is local, or marked to become local,
14408 or this is an opd section reloc which must point
14409 at a local function. */
14410 outrel.r_addend += relocation;
14411 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14413 if (is_opd && h != NULL)
14415 /* Lie about opd entries. This case occurs
14416 when building shared libraries and we
14417 reference a function in another shared
14418 lib. The same thing happens for a weak
14419 definition in an application that's
14420 overridden by a strong definition in a
14421 shared lib. (I believe this is a generic
14422 bug in binutils handling of weak syms.)
14423 In these cases we won't use the opd
14424 entry in this lib. */
14425 unresolved_reloc = FALSE;
14428 && r_type == R_PPC64_ADDR64
14430 ? h->elf.type == STT_GNU_IFUNC
14431 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14432 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14435 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14437 /* We need to relocate .opd contents for ld.so.
14438 Prelink also wants simple and consistent rules
14439 for relocs. This make all RELATIVE relocs have
14440 *r_offset equal to r_addend. */
14449 ? h->elf.type == STT_GNU_IFUNC
14450 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14452 info->callbacks->einfo
14453 (_("%P: %H: %s for indirect "
14454 "function `%T' unsupported\n"),
14455 input_bfd, input_section, rel->r_offset,
14456 ppc64_elf_howto_table[r_type]->name,
14460 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14462 else if (sec == NULL || sec->owner == NULL)
14464 bfd_set_error (bfd_error_bad_value);
14471 osec = sec->output_section;
14472 indx = elf_section_data (osec)->dynindx;
14476 if ((osec->flags & SEC_READONLY) == 0
14477 && htab->elf.data_index_section != NULL)
14478 osec = htab->elf.data_index_section;
14480 osec = htab->elf.text_index_section;
14481 indx = elf_section_data (osec)->dynindx;
14483 BFD_ASSERT (indx != 0);
14485 /* We are turning this relocation into one
14486 against a section symbol, so subtract out
14487 the output section's address but not the
14488 offset of the input section in the output
14490 outrel.r_addend -= osec->vma;
14493 outrel.r_info = ELF64_R_INFO (indx, r_type);
14497 sreloc = elf_section_data (input_section)->sreloc;
14499 ? h->elf.type == STT_GNU_IFUNC
14500 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14501 sreloc = htab->elf.irelplt;
14502 if (sreloc == NULL)
14505 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14508 loc = sreloc->contents;
14509 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14510 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14512 /* If this reloc is against an external symbol, it will
14513 be computed at runtime, so there's no need to do
14514 anything now. However, for the sake of prelink ensure
14515 that the section contents are a known value. */
14518 unresolved_reloc = FALSE;
14519 /* The value chosen here is quite arbitrary as ld.so
14520 ignores section contents except for the special
14521 case of .opd where the contents might be accessed
14522 before relocation. Choose zero, as that won't
14523 cause reloc overflow. */
14526 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14527 to improve backward compatibility with older
14529 if (r_type == R_PPC64_ADDR64)
14530 addend = outrel.r_addend;
14531 /* Adjust pc_relative relocs to have zero in *r_offset. */
14532 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14533 addend = (input_section->output_section->vma
14534 + input_section->output_offset
14541 case R_PPC64_GLOB_DAT:
14542 case R_PPC64_JMP_SLOT:
14543 case R_PPC64_JMP_IREL:
14544 case R_PPC64_RELATIVE:
14545 /* We shouldn't ever see these dynamic relocs in relocatable
14547 /* Fall through. */
14549 case R_PPC64_PLTGOT16:
14550 case R_PPC64_PLTGOT16_DS:
14551 case R_PPC64_PLTGOT16_HA:
14552 case R_PPC64_PLTGOT16_HI:
14553 case R_PPC64_PLTGOT16_LO:
14554 case R_PPC64_PLTGOT16_LO_DS:
14555 case R_PPC64_PLTREL32:
14556 case R_PPC64_PLTREL64:
14557 /* These ones haven't been implemented yet. */
14559 info->callbacks->einfo
14560 (_("%P: %B: %s is not supported for `%T'\n"),
14562 ppc64_elf_howto_table[r_type]->name, sym_name);
14564 bfd_set_error (bfd_error_invalid_operation);
14569 /* Multi-instruction sequences that access the TOC can be
14570 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14571 to nop; addi rb,r2,x; */
14577 case R_PPC64_GOT_TLSLD16_HI:
14578 case R_PPC64_GOT_TLSGD16_HI:
14579 case R_PPC64_GOT_TPREL16_HI:
14580 case R_PPC64_GOT_DTPREL16_HI:
14581 case R_PPC64_GOT16_HI:
14582 case R_PPC64_TOC16_HI:
14583 /* These relocs would only be useful if building up an
14584 offset to later add to r2, perhaps in an indexed
14585 addressing mode instruction. Don't try to optimize.
14586 Unfortunately, the possibility of someone building up an
14587 offset like this or even with the HA relocs, means that
14588 we need to check the high insn when optimizing the low
14592 case R_PPC64_GOT_TLSLD16_HA:
14593 case R_PPC64_GOT_TLSGD16_HA:
14594 case R_PPC64_GOT_TPREL16_HA:
14595 case R_PPC64_GOT_DTPREL16_HA:
14596 case R_PPC64_GOT16_HA:
14597 case R_PPC64_TOC16_HA:
14598 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14599 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14601 bfd_byte *p = contents + (rel->r_offset & ~3);
14602 bfd_put_32 (input_bfd, NOP, p);
14606 case R_PPC64_GOT_TLSLD16_LO:
14607 case R_PPC64_GOT_TLSGD16_LO:
14608 case R_PPC64_GOT_TPREL16_LO_DS:
14609 case R_PPC64_GOT_DTPREL16_LO_DS:
14610 case R_PPC64_GOT16_LO:
14611 case R_PPC64_GOT16_LO_DS:
14612 case R_PPC64_TOC16_LO:
14613 case R_PPC64_TOC16_LO_DS:
14614 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14615 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14617 bfd_byte *p = contents + (rel->r_offset & ~3);
14618 insn = bfd_get_32 (input_bfd, p);
14619 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14621 /* Transform addic to addi when we change reg. */
14622 insn &= ~((0x3f << 26) | (0x1f << 16));
14623 insn |= (14u << 26) | (2 << 16);
14627 insn &= ~(0x1f << 16);
14630 bfd_put_32 (input_bfd, insn, p);
14635 /* Do any further special processing. */
14636 howto = ppc64_elf_howto_table[(int) r_type];
14642 case R_PPC64_REL16_HA:
14643 case R_PPC64_ADDR16_HA:
14644 case R_PPC64_ADDR16_HIGHA:
14645 case R_PPC64_ADDR16_HIGHERA:
14646 case R_PPC64_ADDR16_HIGHESTA:
14647 case R_PPC64_TOC16_HA:
14648 case R_PPC64_SECTOFF_HA:
14649 case R_PPC64_TPREL16_HA:
14650 case R_PPC64_TPREL16_HIGHA:
14651 case R_PPC64_TPREL16_HIGHERA:
14652 case R_PPC64_TPREL16_HIGHESTA:
14653 case R_PPC64_DTPREL16_HA:
14654 case R_PPC64_DTPREL16_HIGHA:
14655 case R_PPC64_DTPREL16_HIGHERA:
14656 case R_PPC64_DTPREL16_HIGHESTA:
14657 /* It's just possible that this symbol is a weak symbol
14658 that's not actually defined anywhere. In that case,
14659 'sec' would be NULL, and we should leave the symbol
14660 alone (it will be set to zero elsewhere in the link). */
14665 case R_PPC64_GOT16_HA:
14666 case R_PPC64_PLTGOT16_HA:
14667 case R_PPC64_PLT16_HA:
14668 case R_PPC64_GOT_TLSGD16_HA:
14669 case R_PPC64_GOT_TLSLD16_HA:
14670 case R_PPC64_GOT_TPREL16_HA:
14671 case R_PPC64_GOT_DTPREL16_HA:
14672 /* Add 0x10000 if sign bit in 0:15 is set.
14673 Bits 0:15 are not used. */
14677 case R_PPC64_ADDR16_DS:
14678 case R_PPC64_ADDR16_LO_DS:
14679 case R_PPC64_GOT16_DS:
14680 case R_PPC64_GOT16_LO_DS:
14681 case R_PPC64_PLT16_LO_DS:
14682 case R_PPC64_SECTOFF_DS:
14683 case R_PPC64_SECTOFF_LO_DS:
14684 case R_PPC64_TOC16_DS:
14685 case R_PPC64_TOC16_LO_DS:
14686 case R_PPC64_PLTGOT16_DS:
14687 case R_PPC64_PLTGOT16_LO_DS:
14688 case R_PPC64_GOT_TPREL16_DS:
14689 case R_PPC64_GOT_TPREL16_LO_DS:
14690 case R_PPC64_GOT_DTPREL16_DS:
14691 case R_PPC64_GOT_DTPREL16_LO_DS:
14692 case R_PPC64_TPREL16_DS:
14693 case R_PPC64_TPREL16_LO_DS:
14694 case R_PPC64_DTPREL16_DS:
14695 case R_PPC64_DTPREL16_LO_DS:
14696 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14698 /* If this reloc is against an lq insn, then the value must be
14699 a multiple of 16. This is somewhat of a hack, but the
14700 "correct" way to do this by defining _DQ forms of all the
14701 _DS relocs bloats all reloc switches in this file. It
14702 doesn't seem to make much sense to use any of these relocs
14703 in data, so testing the insn should be safe. */
14704 if ((insn & (0x3f << 26)) == (56u << 26))
14706 if (((relocation + addend) & mask) != 0)
14708 info->callbacks->einfo
14709 (_("%P: %H: error: %s not a multiple of %u\n"),
14710 input_bfd, input_section, rel->r_offset,
14713 bfd_set_error (bfd_error_bad_value);
14720 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14721 because such sections are not SEC_ALLOC and thus ld.so will
14722 not process them. */
14723 if (unresolved_reloc
14724 && !((input_section->flags & SEC_DEBUGGING) != 0
14725 && h->elf.def_dynamic)
14726 && _bfd_elf_section_offset (output_bfd, info, input_section,
14727 rel->r_offset) != (bfd_vma) -1)
14729 info->callbacks->einfo
14730 (_("%P: %H: unresolvable %s against `%T'\n"),
14731 input_bfd, input_section, rel->r_offset,
14733 h->elf.root.root.string);
14737 /* 16-bit fields in insns mostly have signed values, but a
14738 few insns have 16-bit unsigned values. Really, we should
14739 have different reloc types. */
14740 if (howto->complain_on_overflow != complain_overflow_dont
14741 && howto->dst_mask == 0xffff
14742 && (input_section->flags & SEC_CODE) != 0)
14744 enum complain_overflow complain = complain_overflow_signed;
14746 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14747 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14748 complain = complain_overflow_bitfield;
14749 else if (howto->rightshift == 0
14750 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14751 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14752 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14753 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14754 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14755 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14756 complain = complain_overflow_unsigned;
14757 if (howto->complain_on_overflow != complain)
14759 alt_howto = *howto;
14760 alt_howto.complain_on_overflow = complain;
14761 howto = &alt_howto;
14765 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14766 rel->r_offset, relocation, addend);
14768 if (r != bfd_reloc_ok)
14770 char *more_info = NULL;
14771 const char *reloc_name = howto->name;
14773 if (reloc_dest != DEST_NORMAL)
14775 more_info = bfd_malloc (strlen (reloc_name) + 8);
14776 if (more_info != NULL)
14778 strcpy (more_info, reloc_name);
14779 strcat (more_info, (reloc_dest == DEST_OPD
14780 ? " (OPD)" : " (stub)"));
14781 reloc_name = more_info;
14785 if (r == bfd_reloc_overflow)
14790 && h->elf.root.type == bfd_link_hash_undefweak
14791 && howto->pc_relative)
14793 /* Assume this is a call protected by other code that
14794 detects the symbol is undefined. If this is the case,
14795 we can safely ignore the overflow. If not, the
14796 program is hosed anyway, and a little warning isn't
14802 if (!((*info->callbacks->reloc_overflow)
14803 (info, &h->elf.root, sym_name,
14804 reloc_name, orig_rel.r_addend,
14805 input_bfd, input_section, rel->r_offset)))
14810 info->callbacks->einfo
14811 (_("%P: %H: %s against `%T': error %d\n"),
14812 input_bfd, input_section, rel->r_offset,
14813 reloc_name, sym_name, (int) r);
14816 if (more_info != NULL)
14821 /* If we're emitting relocations, then shortly after this function
14822 returns, reloc offsets and addends for this section will be
14823 adjusted. Worse, reloc symbol indices will be for the output
14824 file rather than the input. Save a copy of the relocs for
14825 opd_entry_value. */
14826 if (is_opd && (info->emitrelocations || info->relocatable))
14829 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14830 rel = bfd_alloc (input_bfd, amt);
14831 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14832 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14835 memcpy (rel, relocs, amt);
14840 /* Adjust the value of any local symbols in opd sections. */
14843 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14844 const char *name ATTRIBUTE_UNUSED,
14845 Elf_Internal_Sym *elfsym,
14846 asection *input_sec,
14847 struct elf_link_hash_entry *h)
14849 struct _opd_sec_data *opd;
14856 opd = get_opd_info (input_sec);
14857 if (opd == NULL || opd->adjust == NULL)
14860 value = elfsym->st_value - input_sec->output_offset;
14861 if (!info->relocatable)
14862 value -= input_sec->output_section->vma;
14864 adjust = opd->adjust[OPD_NDX (value)];
14868 elfsym->st_value += adjust;
14872 /* Finish up dynamic symbol handling. We set the contents of various
14873 dynamic sections here. */
14876 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14877 struct bfd_link_info *info,
14878 struct elf_link_hash_entry *h,
14879 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14881 struct ppc_link_hash_table *htab;
14882 struct plt_entry *ent;
14883 Elf_Internal_Rela rela;
14886 htab = ppc_hash_table (info);
14890 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14891 if (ent->plt.offset != (bfd_vma) -1)
14893 /* This symbol has an entry in the procedure linkage
14894 table. Set it up. */
14895 if (!htab->elf.dynamic_sections_created
14896 || h->dynindx == -1)
14898 BFD_ASSERT (h->type == STT_GNU_IFUNC
14900 && (h->root.type == bfd_link_hash_defined
14901 || h->root.type == bfd_link_hash_defweak));
14902 rela.r_offset = (htab->elf.iplt->output_section->vma
14903 + htab->elf.iplt->output_offset
14904 + ent->plt.offset);
14906 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14908 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14909 rela.r_addend = (h->root.u.def.value
14910 + h->root.u.def.section->output_offset
14911 + h->root.u.def.section->output_section->vma
14913 loc = (htab->elf.irelplt->contents
14914 + (htab->elf.irelplt->reloc_count++
14915 * sizeof (Elf64_External_Rela)));
14919 rela.r_offset = (htab->elf.splt->output_section->vma
14920 + htab->elf.splt->output_offset
14921 + ent->plt.offset);
14922 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14923 rela.r_addend = ent->addend;
14924 loc = (htab->elf.srelplt->contents
14925 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14926 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14928 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14930 if (!htab->opd_abi)
14932 if (!h->def_regular)
14934 /* Mark the symbol as undefined, rather than as
14935 defined in glink. Leave the value if there were
14936 any relocations where pointer equality matters
14937 (this is a clue for the dynamic linker, to make
14938 function pointer comparisons work between an
14939 application and shared library), otherwise set it
14941 sym->st_shndx = SHN_UNDEF;
14942 if (!h->pointer_equality_needed)
14944 else if (!h->ref_regular_nonweak)
14946 /* This breaks function pointer comparisons, but
14947 that is better than breaking tests for a NULL
14948 function pointer. */
14957 /* This symbol needs a copy reloc. Set it up. */
14959 if (h->dynindx == -1
14960 || (h->root.type != bfd_link_hash_defined
14961 && h->root.type != bfd_link_hash_defweak)
14962 || htab->relbss == NULL)
14965 rela.r_offset = (h->root.u.def.value
14966 + h->root.u.def.section->output_section->vma
14967 + h->root.u.def.section->output_offset);
14968 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14970 loc = htab->relbss->contents;
14971 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14972 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14978 /* Used to decide how to sort relocs in an optimal manner for the
14979 dynamic linker, before writing them out. */
14981 static enum elf_reloc_type_class
14982 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14983 const asection *rel_sec,
14984 const Elf_Internal_Rela *rela)
14986 enum elf_ppc64_reloc_type r_type;
14987 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14989 if (rel_sec == htab->elf.irelplt)
14990 return reloc_class_ifunc;
14992 r_type = ELF64_R_TYPE (rela->r_info);
14995 case R_PPC64_RELATIVE:
14996 return reloc_class_relative;
14997 case R_PPC64_JMP_SLOT:
14998 return reloc_class_plt;
15000 return reloc_class_copy;
15002 return reloc_class_normal;
15006 /* Finish up the dynamic sections. */
15009 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15010 struct bfd_link_info *info)
15012 struct ppc_link_hash_table *htab;
15016 htab = ppc_hash_table (info);
15020 dynobj = htab->elf.dynobj;
15021 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15023 if (htab->elf.dynamic_sections_created)
15025 Elf64_External_Dyn *dyncon, *dynconend;
15027 if (sdyn == NULL || htab->elf.sgot == NULL)
15030 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15031 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15032 for (; dyncon < dynconend; dyncon++)
15034 Elf_Internal_Dyn dyn;
15037 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15044 case DT_PPC64_GLINK:
15046 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15047 /* We stupidly defined DT_PPC64_GLINK to be the start
15048 of glink rather than the first entry point, which is
15049 what ld.so needs, and now have a bigger stub to
15050 support automatic multiple TOCs. */
15051 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15055 s = bfd_get_section_by_name (output_bfd, ".opd");
15058 dyn.d_un.d_ptr = s->vma;
15062 if (htab->do_multi_toc && htab->multi_toc_needed)
15063 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15066 case DT_PPC64_OPDSZ:
15067 s = bfd_get_section_by_name (output_bfd, ".opd");
15070 dyn.d_un.d_val = s->size;
15074 s = htab->elf.splt;
15075 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15079 s = htab->elf.srelplt;
15080 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15084 dyn.d_un.d_val = htab->elf.srelplt->size;
15088 /* Don't count procedure linkage table relocs in the
15089 overall reloc count. */
15090 s = htab->elf.srelplt;
15093 dyn.d_un.d_val -= s->size;
15097 /* We may not be using the standard ELF linker script.
15098 If .rela.plt is the first .rela section, we adjust
15099 DT_RELA to not include it. */
15100 s = htab->elf.srelplt;
15103 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15105 dyn.d_un.d_ptr += s->size;
15109 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15113 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15115 /* Fill in the first entry in the global offset table.
15116 We use it to hold the link-time TOCbase. */
15117 bfd_put_64 (output_bfd,
15118 elf_gp (output_bfd) + TOC_BASE_OFF,
15119 htab->elf.sgot->contents);
15121 /* Set .got entry size. */
15122 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15125 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15127 /* Set .plt entry size. */
15128 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15129 = PLT_ENTRY_SIZE (htab);
15132 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15133 brlt ourselves if emitrelocations. */
15134 if (htab->brlt != NULL
15135 && htab->brlt->reloc_count != 0
15136 && !_bfd_elf_link_output_relocs (output_bfd,
15138 elf_section_data (htab->brlt)->rela.hdr,
15139 elf_section_data (htab->brlt)->relocs,
15143 if (htab->glink != NULL
15144 && htab->glink->reloc_count != 0
15145 && !_bfd_elf_link_output_relocs (output_bfd,
15147 elf_section_data (htab->glink)->rela.hdr,
15148 elf_section_data (htab->glink)->relocs,
15152 if (htab->glink_eh_frame != NULL
15153 && htab->glink_eh_frame->size != 0)
15157 asection *stub_sec;
15159 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15160 for (stub_sec = htab->params->stub_bfd->sections;
15162 stub_sec = stub_sec->next)
15163 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15169 /* Offset to stub section. */
15170 val = (stub_sec->output_section->vma
15171 + stub_sec->output_offset);
15172 val -= (htab->glink_eh_frame->output_section->vma
15173 + htab->glink_eh_frame->output_offset
15174 + (p - htab->glink_eh_frame->contents));
15175 if (val + 0x80000000 > 0xffffffff)
15177 info->callbacks->einfo
15178 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15182 bfd_put_32 (dynobj, val, p);
15184 /* stub section size. */
15186 /* Augmentation. */
15191 if (htab->glink != NULL && htab->glink->size != 0)
15197 /* Offset to .glink. */
15198 val = (htab->glink->output_section->vma
15199 + htab->glink->output_offset
15201 val -= (htab->glink_eh_frame->output_section->vma
15202 + htab->glink_eh_frame->output_offset
15203 + (p - htab->glink_eh_frame->contents));
15204 if (val + 0x80000000 > 0xffffffff)
15206 info->callbacks->einfo
15207 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15208 htab->glink->name);
15211 bfd_put_32 (dynobj, val, p);
15215 /* Augmentation. */
15221 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15222 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15223 htab->glink_eh_frame,
15224 htab->glink_eh_frame->contents))
15228 /* We need to handle writing out multiple GOT sections ourselves,
15229 since we didn't add them to DYNOBJ. We know dynobj is the first
15231 while ((dynobj = dynobj->link.next) != NULL)
15235 if (!is_ppc64_elf (dynobj))
15238 s = ppc64_elf_tdata (dynobj)->got;
15241 && s->output_section != bfd_abs_section_ptr
15242 && !bfd_set_section_contents (output_bfd, s->output_section,
15243 s->contents, s->output_offset,
15246 s = ppc64_elf_tdata (dynobj)->relgot;
15249 && s->output_section != bfd_abs_section_ptr
15250 && !bfd_set_section_contents (output_bfd, s->output_section,
15251 s->contents, s->output_offset,
15259 #include "elf64-target.h"
15261 /* FreeBSD support */
15263 #undef TARGET_LITTLE_SYM
15264 #undef TARGET_LITTLE_NAME
15266 #undef TARGET_BIG_SYM
15267 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15268 #undef TARGET_BIG_NAME
15269 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15272 #define ELF_OSABI ELFOSABI_FREEBSD
15275 #define elf64_bed elf64_powerpc_fbsd_bed
15277 #include "elf64-target.h"