1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* glink call stub instructions. We enter with the index in R0. */
191 #define GLINK_CALL_STUB_SIZE (16*4)
195 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
196 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
198 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
199 /* ld %2,(0b-1b)(%11) */
200 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
201 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
207 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
208 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
209 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
210 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
211 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
214 #define NOP 0x60000000
216 /* Some other nops. */
217 #define CROR_151515 0x4def7b82
218 #define CROR_313131 0x4ffffb82
220 /* .glink entries for the first 32k functions are two instructions. */
221 #define LI_R0_0 0x38000000 /* li %r0,0 */
222 #define B_DOT 0x48000000 /* b . */
224 /* After that, we need two instructions to load the index, followed by
226 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
227 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
229 /* Instructions used by the save and restore reg functions. */
230 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
231 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
232 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
233 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
234 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
235 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
236 #define LI_R12_0 0x39800000 /* li %r12,0 */
237 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
238 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
239 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
240 #define BLR 0x4e800020 /* blr */
242 /* Since .opd is an array of descriptors and each entry will end up
243 with identical R_PPC64_RELATIVE relocs, there is really no need to
244 propagate .opd relocs; The dynamic linker should be taught to
245 relocate .opd without reloc entries. */
246 #ifndef NO_OPD_RELOCS
247 #define NO_OPD_RELOCS 0
251 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
255 abiversion (bfd *abfd)
257 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
261 set_abiversion (bfd *abfd, int ver)
263 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
264 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
267 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
269 /* Relocation HOWTO's. */
270 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
272 static reloc_howto_type ppc64_elf_howto_raw[] = {
273 /* This reloc does nothing. */
274 HOWTO (R_PPC64_NONE, /* type */
276 3, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_dont, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_NONE", /* name */
283 FALSE, /* partial_inplace */
286 FALSE), /* pcrel_offset */
288 /* A standard 32 bit relocation. */
289 HOWTO (R_PPC64_ADDR32, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC64_ADDR32", /* name */
298 FALSE, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 /* An absolute 26 bit branch; the lower two bits must be zero.
304 FIXME: we don't check that, we just clear them. */
305 HOWTO (R_PPC64_ADDR24, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR24", /* name */
314 FALSE, /* partial_inplace */
316 0x03fffffc, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A standard 16 bit relocation. */
320 HOWTO (R_PPC64_ADDR16, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_bitfield, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* A 16 bit relocation without overflow. */
335 HOWTO (R_PPC64_ADDR16_LO, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_dont,/* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_LO", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address. */
350 HOWTO (R_PPC64_ADDR16_HI, /* type */
352 1, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE, /* pc_relative */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC64_ADDR16_HI", /* name */
359 FALSE, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
364 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
365 bits, treated as a signed number, is negative. */
366 HOWTO (R_PPC64_ADDR16_HA, /* type */
368 1, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_signed, /* complain_on_overflow */
373 ppc64_elf_ha_reloc, /* special_function */
374 "R_PPC64_ADDR16_HA", /* name */
375 FALSE, /* partial_inplace */
377 0xffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 /* An absolute 16 bit branch; the lower two bits must be zero.
381 FIXME: we don't check that, we just clear them. */
382 HOWTO (R_PPC64_ADDR14, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 FALSE, /* pc_relative */
388 complain_overflow_signed, /* complain_on_overflow */
389 ppc64_elf_branch_reloc, /* special_function */
390 "R_PPC64_ADDR14", /* name */
391 FALSE, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 FALSE), /* pcrel_offset */
396 /* An absolute 16 bit branch, for which bit 10 should be set to
397 indicate that the branch is expected to be taken. The lower two
398 bits must be zero. */
399 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 FALSE, /* pc_relative */
405 complain_overflow_signed, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc, /* special_function */
407 "R_PPC64_ADDR14_BRTAKEN",/* name */
408 FALSE, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 FALSE), /* pcrel_offset */
413 /* An absolute 16 bit branch, for which bit 10 should be set to
414 indicate that the branch is not expected to be taken. The lower
415 two bits must be zero. */
416 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_brtaken_reloc, /* special_function */
424 "R_PPC64_ADDR14_BRNTAKEN",/* name */
425 FALSE, /* partial_inplace */
427 0x0000fffc, /* dst_mask */
428 FALSE), /* pcrel_offset */
430 /* A relative 26 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL24, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL24", /* name */
440 FALSE, /* partial_inplace */
442 0x03fffffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch; the lower two bits must be zero. */
446 HOWTO (R_PPC64_REL14, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE, /* pc_relative */
452 complain_overflow_signed, /* complain_on_overflow */
453 ppc64_elf_branch_reloc, /* special_function */
454 "R_PPC64_REL14", /* name */
455 FALSE, /* partial_inplace */
457 0x0000fffc, /* dst_mask */
458 TRUE), /* pcrel_offset */
460 /* A relative 16 bit branch. Bit 10 should be set to indicate that
461 the branch is expected to be taken. The lower two bits must be
463 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
467 TRUE, /* pc_relative */
469 complain_overflow_signed, /* complain_on_overflow */
470 ppc64_elf_brtaken_reloc, /* special_function */
471 "R_PPC64_REL14_BRTAKEN", /* name */
472 FALSE, /* partial_inplace */
474 0x0000fffc, /* dst_mask */
475 TRUE), /* pcrel_offset */
477 /* A relative 16 bit branch. Bit 10 should be set to indicate that
478 the branch is not expected to be taken. The lower two bits must
480 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 TRUE, /* pc_relative */
486 complain_overflow_signed, /* complain_on_overflow */
487 ppc64_elf_brtaken_reloc, /* special_function */
488 "R_PPC64_REL14_BRNTAKEN",/* name */
489 FALSE, /* partial_inplace */
491 0x0000fffc, /* dst_mask */
492 TRUE), /* pcrel_offset */
494 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
496 HOWTO (R_PPC64_GOT16, /* type */
498 1, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_signed, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_GOT16", /* name */
505 FALSE, /* partial_inplace */
507 0xffff, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
512 HOWTO (R_PPC64_GOT16_LO, /* type */
514 1, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_GOT16_LO", /* name */
521 FALSE, /* partial_inplace */
523 0xffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
528 HOWTO (R_PPC64_GOT16_HI, /* type */
530 1, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE, /* pc_relative */
534 complain_overflow_signed,/* complain_on_overflow */
535 ppc64_elf_unhandled_reloc, /* special_function */
536 "R_PPC64_GOT16_HI", /* name */
537 FALSE, /* partial_inplace */
539 0xffff, /* dst_mask */
540 FALSE), /* pcrel_offset */
542 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
544 HOWTO (R_PPC64_GOT16_HA, /* type */
546 1, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_signed,/* complain_on_overflow */
551 ppc64_elf_unhandled_reloc, /* special_function */
552 "R_PPC64_GOT16_HA", /* name */
553 FALSE, /* partial_inplace */
555 0xffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* This is used only by the dynamic linker. The symbol should exist
559 both in the object being run and in some shared library. The
560 dynamic linker copies the data addressed by the symbol from the
561 shared library into the object, because the object being
562 run has to have the data at some particular address. */
563 HOWTO (R_PPC64_COPY, /* type */
565 0, /* this one is variable size */
567 FALSE, /* pc_relative */
569 complain_overflow_dont, /* complain_on_overflow */
570 ppc64_elf_unhandled_reloc, /* special_function */
571 "R_PPC64_COPY", /* name */
572 FALSE, /* partial_inplace */
575 FALSE), /* pcrel_offset */
577 /* Like R_PPC64_ADDR64, but used when setting global offset table
579 HOWTO (R_PPC64_GLOB_DAT, /* type */
581 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
583 FALSE, /* pc_relative */
585 complain_overflow_dont, /* complain_on_overflow */
586 ppc64_elf_unhandled_reloc, /* special_function */
587 "R_PPC64_GLOB_DAT", /* name */
588 FALSE, /* partial_inplace */
590 ONES (64), /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* Created by the link editor. Marks a procedure linkage table
594 entry for a symbol. */
595 HOWTO (R_PPC64_JMP_SLOT, /* type */
597 0, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE, /* pc_relative */
601 complain_overflow_dont, /* complain_on_overflow */
602 ppc64_elf_unhandled_reloc, /* special_function */
603 "R_PPC64_JMP_SLOT", /* name */
604 FALSE, /* partial_inplace */
607 FALSE), /* pcrel_offset */
609 /* Used only by the dynamic linker. When the object is run, this
610 doubleword64 is set to the load address of the object, plus the
612 HOWTO (R_PPC64_RELATIVE, /* type */
614 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
616 FALSE, /* pc_relative */
618 complain_overflow_dont, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_RELATIVE", /* name */
621 FALSE, /* partial_inplace */
623 ONES (64), /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR32, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR32, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR32", /* name */
636 FALSE, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16, but may be unaligned. */
642 HOWTO (R_PPC64_UADDR16, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_UADDR16", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* 32-bit PC relative. */
657 HOWTO (R_PPC64_REL32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 TRUE, /* pc_relative */
663 complain_overflow_signed, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC64_REL32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
671 /* 32-bit relocation to the symbol's procedure linkage table. */
672 HOWTO (R_PPC64_PLT32, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE, /* pc_relative */
678 complain_overflow_bitfield, /* complain_on_overflow */
679 ppc64_elf_unhandled_reloc, /* special_function */
680 "R_PPC64_PLT32", /* name */
681 FALSE, /* partial_inplace */
683 0xffffffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
686 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
687 FIXME: R_PPC64_PLTREL32 not supported. */
688 HOWTO (R_PPC64_PLTREL32, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 TRUE, /* pc_relative */
694 complain_overflow_signed, /* complain_on_overflow */
695 ppc64_elf_unhandled_reloc, /* special_function */
696 "R_PPC64_PLTREL32", /* name */
697 FALSE, /* partial_inplace */
699 0xffffffff, /* dst_mask */
700 TRUE), /* pcrel_offset */
702 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
704 HOWTO (R_PPC64_PLT16_LO, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 ppc64_elf_unhandled_reloc, /* special_function */
712 "R_PPC64_PLT16_LO", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
720 HOWTO (R_PPC64_PLT16_HI, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_signed, /* complain_on_overflow */
727 ppc64_elf_unhandled_reloc, /* special_function */
728 "R_PPC64_PLT16_HI", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
736 HOWTO (R_PPC64_PLT16_HA, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_unhandled_reloc, /* special_function */
744 "R_PPC64_PLT16_HA", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* 16-bit section relative relocation. */
751 HOWTO (R_PPC64_SECTOFF, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_signed, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* Like R_PPC64_SECTOFF, but no overflow warning. */
766 HOWTO (R_PPC64_SECTOFF_LO, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_LO", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HI, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HI", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* 16-bit upper half adjusted section relative relocation. */
796 HOWTO (R_PPC64_SECTOFF_HA, /* type */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE, /* pc_relative */
802 complain_overflow_signed, /* complain_on_overflow */
803 ppc64_elf_sectoff_ha_reloc, /* special_function */
804 "R_PPC64_SECTOFF_HA", /* name */
805 FALSE, /* partial_inplace */
807 0xffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
810 /* Like R_PPC64_REL24 without touching the two least significant bits. */
811 HOWTO (R_PPC64_REL30, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE, /* pc_relative */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_PPC64_REL30", /* name */
820 FALSE, /* partial_inplace */
822 0xfffffffc, /* dst_mask */
823 TRUE), /* pcrel_offset */
825 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
827 /* A standard 64-bit relocation. */
828 HOWTO (R_PPC64_ADDR64, /* type */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR64", /* name */
837 FALSE, /* partial_inplace */
839 ONES (64), /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address. */
843 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE, /* pc_relative */
849 complain_overflow_dont, /* complain_on_overflow */
850 bfd_elf_generic_reloc, /* special_function */
851 "R_PPC64_ADDR16_HIGHER", /* name */
852 FALSE, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
857 /* The bits 32-47 of an address, plus 1 if the contents of the low
858 16 bits, treated as a signed number, is negative. */
859 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 ppc64_elf_ha_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHERA", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address. */
874 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE, /* pc_relative */
880 complain_overflow_dont, /* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_PPC64_ADDR16_HIGHEST", /* name */
883 FALSE, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* The bits 48-63 of an address, plus 1 if the contents of the low
889 16 bits, treated as a signed number, is negative. */
890 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 ppc64_elf_ha_reloc, /* special_function */
898 "R_PPC64_ADDR16_HIGHESTA", /* name */
899 FALSE, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* Like ADDR64, but may be unaligned. */
905 HOWTO (R_PPC64_UADDR64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 FALSE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_UADDR64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 FALSE), /* pcrel_offset */
919 /* 64-bit relative relocation. */
920 HOWTO (R_PPC64_REL64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 TRUE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 bfd_elf_generic_reloc, /* special_function */
928 "R_PPC64_REL64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 TRUE), /* pcrel_offset */
934 /* 64-bit relocation to the symbol's procedure linkage table. */
935 HOWTO (R_PPC64_PLT64, /* type */
937 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_unhandled_reloc, /* special_function */
943 "R_PPC64_PLT64", /* name */
944 FALSE, /* partial_inplace */
946 ONES (64), /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 64-bit PC relative relocation to the symbol's procedure linkage
951 /* FIXME: R_PPC64_PLTREL64 not supported. */
952 HOWTO (R_PPC64_PLTREL64, /* type */
954 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
956 TRUE, /* pc_relative */
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc64_elf_unhandled_reloc, /* special_function */
960 "R_PPC64_PLTREL64", /* name */
961 FALSE, /* partial_inplace */
963 ONES (64), /* dst_mask */
964 TRUE), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation. */
968 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
969 HOWTO (R_PPC64_TOC16, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE, /* pc_relative */
975 complain_overflow_signed, /* complain_on_overflow */
976 ppc64_elf_toc_reloc, /* special_function */
977 "R_PPC64_TOC16", /* name */
978 FALSE, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE), /* pcrel_offset */
983 /* 16 bit TOC-relative relocation without overflow. */
985 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
986 HOWTO (R_PPC64_TOC16_LO, /* type */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc64_elf_toc_reloc, /* special_function */
994 "R_PPC64_TOC16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* 16 bit TOC-relative relocation, high 16 bits. */
1002 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1003 HOWTO (R_PPC64_TOC16_HI, /* type */
1004 16, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_signed, /* complain_on_overflow */
1010 ppc64_elf_toc_reloc, /* special_function */
1011 "R_PPC64_TOC16_HI", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1018 contents of the low 16 bits, treated as a signed number, is
1021 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1022 HOWTO (R_PPC64_TOC16_HA, /* type */
1023 16, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 FALSE, /* pc_relative */
1028 complain_overflow_signed, /* complain_on_overflow */
1029 ppc64_elf_toc_ha_reloc, /* special_function */
1030 "R_PPC64_TOC16_HA", /* name */
1031 FALSE, /* partial_inplace */
1033 0xffff, /* dst_mask */
1034 FALSE), /* pcrel_offset */
1036 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1038 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1039 HOWTO (R_PPC64_TOC, /* type */
1041 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1043 FALSE, /* pc_relative */
1045 complain_overflow_dont, /* complain_on_overflow */
1046 ppc64_elf_toc64_reloc, /* special_function */
1047 "R_PPC64_TOC", /* name */
1048 FALSE, /* partial_inplace */
1050 ONES (64), /* dst_mask */
1051 FALSE), /* pcrel_offset */
1053 /* Like R_PPC64_GOT16, but also informs the link editor that the
1054 value to relocate may (!) refer to a PLT entry which the link
1055 editor (a) may replace with the symbol value. If the link editor
1056 is unable to fully resolve the symbol, it may (b) create a PLT
1057 entry and store the address to the new PLT entry in the GOT.
1058 This permits lazy resolution of function symbols at run time.
1059 The link editor may also skip all of this and just (c) emit a
1060 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1061 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1062 HOWTO (R_PPC64_PLTGOT16, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_signed, /* complain_on_overflow */
1069 ppc64_elf_unhandled_reloc, /* special_function */
1070 "R_PPC64_PLTGOT16", /* name */
1071 FALSE, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* Like R_PPC64_PLTGOT16, but without overflow. */
1077 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1078 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc64_elf_unhandled_reloc, /* special_function */
1086 "R_PPC64_PLTGOT16_LO", /* name */
1087 FALSE, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1092 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1093 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1094 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc, /* special_function */
1102 "R_PPC64_PLTGOT16_HI", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1109 1 if the contents of the low 16 bits, treated as a signed number,
1111 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1112 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1113 16, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 ppc64_elf_unhandled_reloc, /* special_function */
1120 "R_PPC64_PLTGOT16_HA", /* name */
1121 FALSE, /* partial_inplace */
1123 0xffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_DS", /* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_PPC64_ADDR16_LO_DS",/* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_signed, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_GOT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc64_elf_unhandled_reloc, /* special_function */
1195 "R_PPC64_PLT16_LO_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_signed, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_DS", /* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc64_elf_sectoff_reloc, /* special_function */
1225 "R_PPC64_SECTOFF_LO_DS",/* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_signed, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1247 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1249 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE, /* pc_relative */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 ppc64_elf_toc_reloc, /* special_function */
1255 "R_PPC64_TOC16_LO_DS", /* name */
1256 FALSE, /* partial_inplace */
1258 0xfffc, /* dst_mask */
1259 FALSE), /* pcrel_offset */
1261 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1262 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1263 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_signed, /* complain_on_overflow */
1270 ppc64_elf_unhandled_reloc, /* special_function */
1271 "R_PPC64_PLTGOT16_DS", /* name */
1272 FALSE, /* partial_inplace */
1274 0xfffc, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1278 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1279 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc, /* special_function */
1287 "R_PPC64_PLTGOT16_LO_DS",/* name */
1288 FALSE, /* partial_inplace */
1290 0xfffc, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* Marker relocs for TLS. */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC64_TLS", /* name */
1303 FALSE, /* partial_inplace */
1306 FALSE), /* pcrel_offset */
1308 HOWTO (R_PPC64_TLSGD,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE, /* pc_relative */
1314 complain_overflow_dont, /* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_PPC64_TLSGD", /* name */
1317 FALSE, /* partial_inplace */
1320 FALSE), /* pcrel_offset */
1322 HOWTO (R_PPC64_TLSLD,
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_dont, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC64_TLSLD", /* name */
1331 FALSE, /* partial_inplace */
1334 FALSE), /* pcrel_offset */
1336 HOWTO (R_PPC64_TOCSAVE,
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_dont, /* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_PPC64_TOCSAVE", /* name */
1345 FALSE, /* partial_inplace */
1348 FALSE), /* pcrel_offset */
1350 /* Computes the load module index of the load module that contains the
1351 definition of its TLS sym. */
1352 HOWTO (R_PPC64_DTPMOD64,
1354 4, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE, /* pc_relative */
1358 complain_overflow_dont, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc, /* special_function */
1360 "R_PPC64_DTPMOD64", /* name */
1361 FALSE, /* partial_inplace */
1363 ONES (64), /* dst_mask */
1364 FALSE), /* pcrel_offset */
1366 /* Computes a dtv-relative displacement, the difference between the value
1367 of sym+add and the base address of the thread-local storage block that
1368 contains the definition of sym, minus 0x8000. */
1369 HOWTO (R_PPC64_DTPREL64,
1371 4, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_dont, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL64", /* name */
1378 FALSE, /* partial_inplace */
1380 ONES (64), /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* A 16 bit dtprel reloc. */
1384 HOWTO (R_PPC64_DTPREL16,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_signed, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16, but no overflow. */
1399 HOWTO (R_PPC64_DTPREL16_LO,
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_dont, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_LO", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HI,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HI", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HA,
1430 16, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_signed, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HA", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHER,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHER", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1460 32, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHERA", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHEST", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1489 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1490 48, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_dont, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1498 FALSE, /* partial_inplace */
1500 0xffff, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16, but for insns with a DS field. */
1504 HOWTO (R_PPC64_DTPREL16_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_signed, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Like DTPREL16_DS, but no overflow. */
1519 HOWTO (R_PPC64_DTPREL16_LO_DS,
1521 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE, /* pc_relative */
1525 complain_overflow_dont, /* complain_on_overflow */
1526 ppc64_elf_unhandled_reloc, /* special_function */
1527 "R_PPC64_DTPREL16_LO_DS", /* name */
1528 FALSE, /* partial_inplace */
1530 0xfffc, /* dst_mask */
1531 FALSE), /* pcrel_offset */
1533 /* Computes a tp-relative displacement, the difference between the value of
1534 sym+add and the value of the thread pointer (r13). */
1535 HOWTO (R_PPC64_TPREL64,
1537 4, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_dont, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL64", /* name */
1544 FALSE, /* partial_inplace */
1546 ONES (64), /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* A 16 bit tprel reloc. */
1550 HOWTO (R_PPC64_TPREL16,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_signed, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16, but no overflow. */
1565 HOWTO (R_PPC64_TPREL16_LO,
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_dont, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_LO", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_LO, but next higher group of 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HI,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HI", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but adjust for low 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HA,
1596 16, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_signed, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HA", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HI, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHER,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHER", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHERA,
1626 32, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHERA", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHEST,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHEST", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1655 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1656 48, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_HIGHESTA", /* name */
1664 FALSE, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16, but for insns with a DS field. */
1670 HOWTO (R_PPC64_TPREL16_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_signed, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Like TPREL16_DS, but no overflow. */
1685 HOWTO (R_PPC64_TPREL16_LO_DS,
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE, /* pc_relative */
1691 complain_overflow_dont, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc, /* special_function */
1693 "R_PPC64_TPREL16_LO_DS", /* name */
1694 FALSE, /* partial_inplace */
1696 0xfffc, /* dst_mask */
1697 FALSE), /* pcrel_offset */
1699 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1700 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1701 to the first entry relative to the TOC base (r2). */
1702 HOWTO (R_PPC64_GOT_TLSGD16,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_signed, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16, but no overflow. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_dont, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_LO", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HI", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1747 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE, /* pc_relative */
1753 complain_overflow_signed, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc, /* special_function */
1755 "R_PPC64_GOT_TLSGD16_HA", /* name */
1756 FALSE, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE), /* pcrel_offset */
1761 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1762 with values (sym+add)@dtpmod and zero, and computes the offset to the
1763 first entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TLSLD16,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_signed, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_dont, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_LO", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HI", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE, /* pc_relative */
1815 complain_overflow_signed, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc, /* special_function */
1817 "R_PPC64_GOT_TLSLD16_HA", /* name */
1818 FALSE, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE), /* pcrel_offset */
1823 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1824 the offset to the entry relative to the TOC base (r2). */
1825 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_signed, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_DS, but no overflow. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_dont, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1849 FALSE, /* partial_inplace */
1851 0xfffc, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HI", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1870 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1871 16, /* rightshift */
1872 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE, /* pc_relative */
1876 complain_overflow_signed, /* complain_on_overflow */
1877 ppc64_elf_unhandled_reloc, /* special_function */
1878 "R_PPC64_GOT_DTPREL16_HA", /* name */
1879 FALSE, /* partial_inplace */
1881 0xffff, /* dst_mask */
1882 FALSE), /* pcrel_offset */
1884 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1885 offset to the entry relative to the TOC base (r2). */
1886 HOWTO (R_PPC64_GOT_TPREL16_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_signed, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_DS, but no overflow. */
1901 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_dont, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1910 FALSE, /* partial_inplace */
1912 0xfffc, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HI,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HI", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1931 HOWTO (R_PPC64_GOT_TPREL16_HA,
1932 16, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE, /* pc_relative */
1937 complain_overflow_signed, /* complain_on_overflow */
1938 ppc64_elf_unhandled_reloc, /* special_function */
1939 "R_PPC64_GOT_TPREL16_HA", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 FALSE), /* pcrel_offset */
1945 HOWTO (R_PPC64_JMP_IREL, /* type */
1947 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 FALSE, /* pc_relative */
1951 complain_overflow_dont, /* complain_on_overflow */
1952 ppc64_elf_unhandled_reloc, /* special_function */
1953 "R_PPC64_JMP_IREL", /* name */
1954 FALSE, /* partial_inplace */
1957 FALSE), /* pcrel_offset */
1959 HOWTO (R_PPC64_IRELATIVE, /* type */
1961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1963 FALSE, /* pc_relative */
1965 complain_overflow_dont, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_IRELATIVE", /* name */
1968 FALSE, /* partial_inplace */
1970 ONES (64), /* dst_mask */
1971 FALSE), /* pcrel_offset */
1973 /* A 16 bit relative relocation. */
1974 HOWTO (R_PPC64_REL16, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_signed, /* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* A 16 bit relative relocation without overflow. */
1989 HOWTO (R_PPC64_REL16_LO, /* type */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_dont,/* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_LO", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address. */
2004 HOWTO (R_PPC64_REL16_HI, /* type */
2005 16, /* rightshift */
2006 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 TRUE, /* pc_relative */
2010 complain_overflow_signed, /* complain_on_overflow */
2011 bfd_elf_generic_reloc, /* special_function */
2012 "R_PPC64_REL16_HI", /* name */
2013 FALSE, /* partial_inplace */
2015 0xffff, /* dst_mask */
2016 TRUE), /* pcrel_offset */
2018 /* The high order 16 bits of a relative address, plus 1 if the contents of
2019 the low 16 bits, treated as a signed number, is negative. */
2020 HOWTO (R_PPC64_REL16_HA, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 TRUE, /* pc_relative */
2026 complain_overflow_signed, /* complain_on_overflow */
2027 ppc64_elf_ha_reloc, /* special_function */
2028 "R_PPC64_REL16_HA", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 TRUE), /* pcrel_offset */
2034 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2035 HOWTO (R_PPC64_REL16DX_HA, /* type */
2036 16, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2039 TRUE, /* pc_relative */
2041 complain_overflow_signed, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_REL16DX_HA", /* name */
2044 FALSE, /* partial_inplace */
2046 0x1fffc1, /* dst_mask */
2047 TRUE), /* pcrel_offset */
2049 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2050 HOWTO (R_PPC64_16DX_HA, /* type */
2051 16, /* rightshift */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_signed, /* complain_on_overflow */
2057 ppc64_elf_ha_reloc, /* special_function */
2058 "R_PPC64_16DX_HA", /* name */
2059 FALSE, /* partial_inplace */
2061 0x1fffc1, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2065 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 bfd_elf_generic_reloc, /* special_function */
2073 "R_PPC64_ADDR16_HIGH", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2080 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_ha_reloc, /* special_function */
2088 "R_PPC64_ADDR16_HIGHA", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2095 HOWTO (R_PPC64_DTPREL16_HIGH,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_DTPREL16_HIGH", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2110 HOWTO (R_PPC64_DTPREL16_HIGHA,
2111 16, /* rightshift */
2112 1, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 ppc64_elf_unhandled_reloc, /* special_function */
2118 "R_PPC64_DTPREL16_HIGHA", /* name */
2119 FALSE, /* partial_inplace */
2121 0xffff, /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2125 HOWTO (R_PPC64_TPREL16_HIGH,
2126 16, /* rightshift */
2127 1, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 ppc64_elf_unhandled_reloc, /* special_function */
2133 "R_PPC64_TPREL16_HIGH", /* name */
2134 FALSE, /* partial_inplace */
2136 0xffff, /* dst_mask */
2137 FALSE), /* pcrel_offset */
2139 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2140 HOWTO (R_PPC64_TPREL16_HIGHA,
2141 16, /* rightshift */
2142 1, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 ppc64_elf_unhandled_reloc, /* special_function */
2148 "R_PPC64_TPREL16_HIGHA", /* name */
2149 FALSE, /* partial_inplace */
2151 0xffff, /* dst_mask */
2152 FALSE), /* pcrel_offset */
2154 /* Marker reloc on ELFv2 large-model function entry. */
2155 HOWTO (R_PPC64_ENTRY,
2157 2, /* size (0 = byte, 1 = short, 2 = long) */
2159 FALSE, /* pc_relative */
2161 complain_overflow_dont, /* complain_on_overflow */
2162 bfd_elf_generic_reloc, /* special_function */
2163 "R_PPC64_ENTRY", /* name */
2164 FALSE, /* partial_inplace */
2167 FALSE), /* pcrel_offset */
2169 /* Like ADDR64, but use local entry point of function. */
2170 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2172 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2174 FALSE, /* pc_relative */
2176 complain_overflow_dont, /* complain_on_overflow */
2177 bfd_elf_generic_reloc, /* special_function */
2178 "R_PPC64_ADDR64_LOCAL", /* name */
2179 FALSE, /* partial_inplace */
2181 ONES (64), /* dst_mask */
2182 FALSE), /* pcrel_offset */
2184 /* GNU extension to record C++ vtable hierarchy. */
2185 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2187 0, /* size (0 = byte, 1 = short, 2 = long) */
2189 FALSE, /* pc_relative */
2191 complain_overflow_dont, /* complain_on_overflow */
2192 NULL, /* special_function */
2193 "R_PPC64_GNU_VTINHERIT", /* name */
2194 FALSE, /* partial_inplace */
2197 FALSE), /* pcrel_offset */
2199 /* GNU extension to record C++ vtable member usage. */
2200 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2202 0, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE, /* pc_relative */
2206 complain_overflow_dont, /* complain_on_overflow */
2207 NULL, /* special_function */
2208 "R_PPC64_GNU_VTENTRY", /* name */
2209 FALSE, /* partial_inplace */
2212 FALSE), /* pcrel_offset */
2216 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2220 ppc_howto_init (void)
2222 unsigned int i, type;
2224 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2226 type = ppc64_elf_howto_raw[i].type;
2227 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2228 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2232 static reloc_howto_type *
2233 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2234 bfd_reloc_code_real_type code)
2236 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2238 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2239 /* Initialize howto table if needed. */
2247 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2249 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2251 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2253 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2255 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2257 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2259 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2261 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2263 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2265 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2267 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2269 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2271 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2273 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2275 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2277 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2279 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2281 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2283 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2285 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2287 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2289 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2291 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2293 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2295 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2297 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2299 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2301 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2303 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2305 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2307 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2309 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2311 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2313 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2315 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2317 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2319 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2321 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2323 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2325 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2327 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2329 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2331 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2333 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2335 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2337 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2339 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2341 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2343 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2345 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2347 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2349 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2351 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2353 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2355 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2357 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2359 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2361 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2363 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2365 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2367 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2369 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2371 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2373 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2375 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2377 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2379 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2381 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2383 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2385 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2387 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2389 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2391 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2393 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2395 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2397 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2399 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2401 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2403 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2405 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2407 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2409 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2411 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2413 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2415 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2417 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2419 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2421 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2423 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2425 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2427 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2429 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2431 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2433 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2435 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2437 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2439 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2441 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2443 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2445 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2447 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2449 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2451 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2453 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2455 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2457 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2459 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2461 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2463 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2465 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2467 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2469 case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA;
2471 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2473 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2475 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2477 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2479 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2483 return ppc64_elf_howto_table[r];
2486 static reloc_howto_type *
2487 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2492 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2493 if (ppc64_elf_howto_raw[i].name != NULL
2494 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2495 return &ppc64_elf_howto_raw[i];
2500 /* Set the howto pointer for a PowerPC ELF reloc. */
2503 ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
2504 Elf_Internal_Rela *dst)
2508 /* Initialize howto table if needed. */
2509 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2512 type = ELF64_R_TYPE (dst->r_info);
2513 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2515 /* xgettext:c-format */
2516 _bfd_error_handler (_("%B: invalid relocation type %d"),
2518 type = R_PPC64_NONE;
2520 cache_ptr->howto = ppc64_elf_howto_table[type];
2523 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2525 static bfd_reloc_status_type
2526 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2527 void *data, asection *input_section,
2528 bfd *output_bfd, char **error_message)
2530 enum elf_ppc64_reloc_type r_type;
2532 bfd_size_type octets;
2535 /* If this is a relocatable link (output_bfd test tells us), just
2536 call the generic function. Any adjustment will be done at final
2538 if (output_bfd != NULL)
2539 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2540 input_section, output_bfd, error_message);
2542 /* Adjust the addend for sign extension of the low 16 bits.
2543 We won't actually be using the low 16 bits, so trashing them
2545 reloc_entry->addend += 0x8000;
2546 r_type = reloc_entry->howto->type;
2547 if (r_type != R_PPC64_REL16DX_HA)
2548 return bfd_reloc_continue;
2551 if (!bfd_is_com_section (symbol->section))
2552 value = symbol->value;
2553 value += (reloc_entry->addend
2554 + symbol->section->output_offset
2555 + symbol->section->output_section->vma);
2556 value -= (reloc_entry->address
2557 + input_section->output_offset
2558 + input_section->output_section->vma);
2559 value = (bfd_signed_vma) value >> 16;
2561 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2562 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2564 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2565 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2566 if (value + 0x8000 > 0xffff)
2567 return bfd_reloc_overflow;
2568 return bfd_reloc_ok;
2571 static bfd_reloc_status_type
2572 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2573 void *data, asection *input_section,
2574 bfd *output_bfd, char **error_message)
2576 if (output_bfd != NULL)
2577 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2578 input_section, output_bfd, error_message);
2580 if (strcmp (symbol->section->name, ".opd") == 0
2581 && (symbol->section->owner->flags & DYNAMIC) == 0)
2583 bfd_vma dest = opd_entry_value (symbol->section,
2584 symbol->value + reloc_entry->addend,
2586 if (dest != (bfd_vma) -1)
2587 reloc_entry->addend = dest - (symbol->value
2588 + symbol->section->output_section->vma
2589 + symbol->section->output_offset);
2593 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2595 if (symbol->section->owner != abfd
2596 && symbol->section->owner != NULL
2597 && abiversion (symbol->section->owner) >= 2)
2601 for (i = 0; i < symbol->section->owner->symcount; ++i)
2603 asymbol *symdef = symbol->section->owner->outsymbols[i];
2605 if (strcmp (symdef->name, symbol->name) == 0)
2607 elfsym = (elf_symbol_type *) symdef;
2613 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2615 return bfd_reloc_continue;
2618 static bfd_reloc_status_type
2619 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2620 void *data, asection *input_section,
2621 bfd *output_bfd, char **error_message)
2624 enum elf_ppc64_reloc_type r_type;
2625 bfd_size_type octets;
2626 /* Assume 'at' branch hints. */
2627 bfd_boolean is_isa_v2 = TRUE;
2629 /* If this is a relocatable link (output_bfd test tells us), just
2630 call the generic function. Any adjustment will be done at final
2632 if (output_bfd != NULL)
2633 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2634 input_section, output_bfd, error_message);
2636 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2637 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2638 insn &= ~(0x01 << 21);
2639 r_type = reloc_entry->howto->type;
2640 if (r_type == R_PPC64_ADDR14_BRTAKEN
2641 || r_type == R_PPC64_REL14_BRTAKEN)
2642 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2646 /* Set 'a' bit. This is 0b00010 in BO field for branch
2647 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2648 for branch on CTR insns (BO == 1a00t or 1a01t). */
2649 if ((insn & (0x14 << 21)) == (0x04 << 21))
2651 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2661 if (!bfd_is_com_section (symbol->section))
2662 target = symbol->value;
2663 target += symbol->section->output_section->vma;
2664 target += symbol->section->output_offset;
2665 target += reloc_entry->addend;
2667 from = (reloc_entry->address
2668 + input_section->output_offset
2669 + input_section->output_section->vma);
2671 /* Invert 'y' bit if not the default. */
2672 if ((bfd_signed_vma) (target - from) < 0)
2675 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2677 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2678 input_section, output_bfd, error_message);
2681 static bfd_reloc_status_type
2682 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2683 void *data, asection *input_section,
2684 bfd *output_bfd, char **error_message)
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 /* Subtract the symbol section base address. */
2694 reloc_entry->addend -= symbol->section->output_section->vma;
2695 return bfd_reloc_continue;
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2700 void *data, asection *input_section,
2701 bfd *output_bfd, char **error_message)
2703 /* If this is a relocatable link (output_bfd test tells us), just
2704 call the generic function. Any adjustment will be done at final
2706 if (output_bfd != NULL)
2707 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2708 input_section, output_bfd, error_message);
2710 /* Subtract the symbol section base address. */
2711 reloc_entry->addend -= symbol->section->output_section->vma;
2713 /* Adjust the addend for sign extension of the low 16 bits. */
2714 reloc_entry->addend += 0x8000;
2715 return bfd_reloc_continue;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2720 void *data, asection *input_section,
2721 bfd *output_bfd, char **error_message)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd != NULL)
2729 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2730 input_section, output_bfd, error_message);
2732 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2734 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2736 /* Subtract the TOC base address. */
2737 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2738 return bfd_reloc_continue;
2741 static bfd_reloc_status_type
2742 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2743 void *data, asection *input_section,
2744 bfd *output_bfd, char **error_message)
2748 /* If this is a relocatable link (output_bfd test tells us), just
2749 call the generic function. Any adjustment will be done at final
2751 if (output_bfd != NULL)
2752 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2753 input_section, output_bfd, error_message);
2755 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2757 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2759 /* Subtract the TOC base address. */
2760 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry->addend += 0x8000;
2764 return bfd_reloc_continue;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2769 void *data, asection *input_section,
2770 bfd *output_bfd, char **error_message)
2773 bfd_size_type octets;
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd != NULL)
2779 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2780 input_section, output_bfd, error_message);
2782 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2784 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2786 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2787 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2788 return bfd_reloc_ok;
2791 static bfd_reloc_status_type
2792 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2793 void *data, asection *input_section,
2794 bfd *output_bfd, char **error_message)
2796 /* If this is a relocatable link (output_bfd test tells us), just
2797 call the generic function. Any adjustment will be done at final
2799 if (output_bfd != NULL)
2800 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2801 input_section, output_bfd, error_message);
2803 if (error_message != NULL)
2805 static char buf[60];
2806 sprintf (buf, "generic linker can't handle %s",
2807 reloc_entry->howto->name);
2808 *error_message = buf;
2810 return bfd_reloc_dangerous;
2813 /* Track GOT entries needed for a given symbol. We might need more
2814 than one got entry per symbol. */
2817 struct got_entry *next;
2819 /* The symbol addend that we'll be placing in the GOT. */
2822 /* Unlike other ELF targets, we use separate GOT entries for the same
2823 symbol referenced from different input files. This is to support
2824 automatic multiple TOC/GOT sections, where the TOC base can vary
2825 from one input file to another. After partitioning into TOC groups
2826 we merge entries within the group.
2828 Point to the BFD owning this GOT entry. */
2831 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2832 TLS_TPREL or TLS_DTPREL for tls entries. */
2833 unsigned char tls_type;
2835 /* Non-zero if got.ent points to real entry. */
2836 unsigned char is_indirect;
2838 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2841 bfd_signed_vma refcount;
2843 struct got_entry *ent;
2847 /* The same for PLT. */
2850 struct plt_entry *next;
2856 bfd_signed_vma refcount;
2861 struct ppc64_elf_obj_tdata
2863 struct elf_obj_tdata elf;
2865 /* Shortcuts to dynamic linker sections. */
2869 /* Used during garbage collection. We attach global symbols defined
2870 on removed .opd entries to this section so that the sym is removed. */
2871 asection *deleted_section;
2873 /* TLS local dynamic got entry handling. Support for multiple GOT
2874 sections means we potentially need one of these for each input bfd. */
2875 struct got_entry tlsld_got;
2878 /* A copy of relocs before they are modified for --emit-relocs. */
2879 Elf_Internal_Rela *relocs;
2881 /* Section contents. */
2885 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2886 the reloc to be in the range -32768 to 32767. */
2887 unsigned int has_small_toc_reloc : 1;
2889 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2890 instruction not one we handle. */
2891 unsigned int unexpected_toc_insn : 1;
2894 #define ppc64_elf_tdata(bfd) \
2895 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2897 #define ppc64_tlsld_got(bfd) \
2898 (&ppc64_elf_tdata (bfd)->tlsld_got)
2900 #define is_ppc64_elf(bfd) \
2901 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2902 && elf_object_id (bfd) == PPC64_ELF_DATA)
2904 /* Override the generic function because we store some extras. */
2907 ppc64_elf_mkobject (bfd *abfd)
2909 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2913 /* Fix bad default arch selected for a 64 bit input bfd when the
2914 default is 32 bit. Also select arch based on apuinfo. */
2917 ppc64_elf_object_p (bfd *abfd)
2919 if (!abfd->arch_info->the_default)
2922 if (abfd->arch_info->bits_per_word == 32)
2924 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2926 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2928 /* Relies on arch after 32 bit default being 64 bit default. */
2929 abfd->arch_info = abfd->arch_info->next;
2930 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2933 return _bfd_elf_ppc_set_arch (abfd);
2936 /* Support for core dump NOTE sections. */
2939 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2941 size_t offset, size;
2943 if (note->descsz != 504)
2947 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2950 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2956 /* Make a ".reg/999" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2958 size, note->descpos + offset);
2962 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2964 if (note->descsz != 136)
2967 elf_tdata (abfd)->core->pid
2968 = bfd_get_32 (abfd, note->descdata + 24);
2969 elf_tdata (abfd)->core->program
2970 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2971 elf_tdata (abfd)->core->command
2972 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2978 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2991 va_start (ap, note_type);
2992 memset (data, 0, sizeof (data));
2993 strncpy (data + 40, va_arg (ap, const char *), 16);
2994 strncpy (data + 56, va_arg (ap, const char *), 80);
2996 return elfcore_write_note (abfd, buf, bufsiz,
2997 "CORE", note_type, data, sizeof (data));
3008 va_start (ap, note_type);
3009 memset (data, 0, 112);
3010 pid = va_arg (ap, long);
3011 bfd_put_32 (abfd, pid, data + 32);
3012 cursig = va_arg (ap, int);
3013 bfd_put_16 (abfd, cursig, data + 12);
3014 greg = va_arg (ap, const void *);
3015 memcpy (data + 112, greg, 384);
3016 memset (data + 496, 0, 8);
3018 return elfcore_write_note (abfd, buf, bufsiz,
3019 "CORE", note_type, data, sizeof (data));
3024 /* Add extra PPC sections. */
3026 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3028 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3029 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3030 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3031 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3032 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3033 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3034 { NULL, 0, 0, 0, 0 }
3037 enum _ppc64_sec_type {
3043 struct _ppc64_elf_section_data
3045 struct bfd_elf_section_data elf;
3049 /* An array with one entry for each opd function descriptor,
3050 and some spares since opd entries may be either 16 or 24 bytes. */
3051 #define OPD_NDX(OFF) ((OFF) >> 4)
3052 struct _opd_sec_data
3054 /* Points to the function code section for local opd entries. */
3055 asection **func_sec;
3057 /* After editing .opd, adjust references to opd local syms. */
3061 /* An array for toc sections, indexed by offset/8. */
3062 struct _toc_sec_data
3064 /* Specifies the relocation symbol index used at a given toc offset. */
3067 /* And the relocation addend. */
3072 enum _ppc64_sec_type sec_type:2;
3074 /* Flag set when small branches are detected. Used to
3075 select suitable defaults for the stub group size. */
3076 unsigned int has_14bit_branch:1;
3079 #define ppc64_elf_section_data(sec) \
3080 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3083 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3085 if (!sec->used_by_bfd)
3087 struct _ppc64_elf_section_data *sdata;
3088 bfd_size_type amt = sizeof (*sdata);
3090 sdata = bfd_zalloc (abfd, amt);
3093 sec->used_by_bfd = sdata;
3096 return _bfd_elf_new_section_hook (abfd, sec);
3099 static struct _opd_sec_data *
3100 get_opd_info (asection * sec)
3103 && ppc64_elf_section_data (sec) != NULL
3104 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3105 return &ppc64_elf_section_data (sec)->u.opd;
3109 /* Parameters for the qsort hook. */
3110 static bfd_boolean synthetic_relocatable;
3111 static asection *synthetic_opd;
3113 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3116 compare_symbols (const void *ap, const void *bp)
3118 const asymbol *a = * (const asymbol **) ap;
3119 const asymbol *b = * (const asymbol **) bp;
3121 /* Section symbols first. */
3122 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3124 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3127 /* then .opd symbols. */
3128 if (synthetic_opd != NULL)
3130 if (strcmp (a->section->name, ".opd") == 0
3131 && strcmp (b->section->name, ".opd") != 0)
3133 if (strcmp (a->section->name, ".opd") != 0
3134 && strcmp (b->section->name, ".opd") == 0)
3138 /* then other code symbols. */
3139 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3140 == (SEC_CODE | SEC_ALLOC)
3141 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3142 != (SEC_CODE | SEC_ALLOC))
3145 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3146 != (SEC_CODE | SEC_ALLOC)
3147 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3148 == (SEC_CODE | SEC_ALLOC))
3151 if (synthetic_relocatable)
3153 if (a->section->id < b->section->id)
3156 if (a->section->id > b->section->id)
3160 if (a->value + a->section->vma < b->value + b->section->vma)
3163 if (a->value + a->section->vma > b->value + b->section->vma)
3166 /* For syms with the same value, prefer strong dynamic global function
3167 syms over other syms. */
3168 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3171 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3174 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3177 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3180 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3183 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3186 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3189 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3195 /* Search SYMS for a symbol of the given VALUE. */
3198 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3202 if (id == (unsigned) -1)
3206 mid = (lo + hi) >> 1;
3207 if (syms[mid]->value + syms[mid]->section->vma < value)
3209 else if (syms[mid]->value + syms[mid]->section->vma > value)
3219 mid = (lo + hi) >> 1;
3220 if (syms[mid]->section->id < id)
3222 else if (syms[mid]->section->id > id)
3224 else if (syms[mid]->value < value)
3226 else if (syms[mid]->value > value)
3236 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3238 bfd_vma vma = *(bfd_vma *) ptr;
3239 return ((section->flags & SEC_ALLOC) != 0
3240 && section->vma <= vma
3241 && vma < section->vma + section->size);
3244 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3245 entry syms. Also generate @plt symbols for the glink branch table.
3246 Returns count of synthetic symbols in RET or -1 on error. */
3249 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3250 long static_count, asymbol **static_syms,
3251 long dyn_count, asymbol **dyn_syms,
3258 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3259 asection *opd = NULL;
3260 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3262 int abi = abiversion (abfd);
3268 opd = bfd_get_section_by_name (abfd, ".opd");
3269 if (opd == NULL && abi == 1)
3273 symcount = static_count;
3275 symcount += dyn_count;
3279 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3283 if (!relocatable && static_count != 0 && dyn_count != 0)
3285 /* Use both symbol tables. */
3286 memcpy (syms, static_syms, static_count * sizeof (*syms));
3287 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3289 else if (!relocatable && static_count == 0)
3290 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3292 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3294 synthetic_relocatable = relocatable;
3295 synthetic_opd = opd;
3296 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3298 if (!relocatable && symcount > 1)
3301 /* Trim duplicate syms, since we may have merged the normal and
3302 dynamic symbols. Actually, we only care about syms that have
3303 different values, so trim any with the same value. */
3304 for (i = 1, j = 1; i < symcount; ++i)
3305 if (syms[i - 1]->value + syms[i - 1]->section->vma
3306 != syms[i]->value + syms[i]->section->vma)
3307 syms[j++] = syms[i];
3312 /* Note that here and in compare_symbols we can't compare opd and
3313 sym->section directly. With separate debug info files, the
3314 symbols will be extracted from the debug file while abfd passed
3315 to this function is the real binary. */
3316 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3320 for (; i < symcount; ++i)
3321 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3322 != (SEC_CODE | SEC_ALLOC))
3323 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3327 for (; i < symcount; ++i)
3328 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3333 for (; i < symcount; ++i)
3334 if (strcmp (syms[i]->section->name, ".opd") != 0)
3338 for (; i < symcount; ++i)
3339 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3340 != (SEC_CODE | SEC_ALLOC))
3348 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3353 if (opdsymend == secsymend)
3356 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3357 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3361 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3368 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3372 while (r < opd->relocation + relcount
3373 && r->address < syms[i]->value + opd->vma)
3376 if (r == opd->relocation + relcount)
3379 if (r->address != syms[i]->value + opd->vma)
3382 if (r->howto->type != R_PPC64_ADDR64)
3385 sym = *r->sym_ptr_ptr;
3386 if (!sym_exists_at (syms, opdsymend, symcount,
3387 sym->section->id, sym->value + r->addend))
3390 size += sizeof (asymbol);
3391 size += strlen (syms[i]->name) + 2;
3397 s = *ret = bfd_malloc (size);
3404 names = (char *) (s + count);
3406 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3410 while (r < opd->relocation + relcount
3411 && r->address < syms[i]->value + opd->vma)
3414 if (r == opd->relocation + relcount)
3417 if (r->address != syms[i]->value + opd->vma)
3420 if (r->howto->type != R_PPC64_ADDR64)
3423 sym = *r->sym_ptr_ptr;
3424 if (!sym_exists_at (syms, opdsymend, symcount,
3425 sym->section->id, sym->value + r->addend))
3430 s->flags |= BSF_SYNTHETIC;
3431 s->section = sym->section;
3432 s->value = sym->value + r->addend;
3435 len = strlen (syms[i]->name);
3436 memcpy (names, syms[i]->name, len + 1);
3438 /* Have udata.p point back to the original symbol this
3439 synthetic symbol was derived from. */
3440 s->udata.p = syms[i];
3447 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3448 bfd_byte *contents = NULL;
3451 bfd_vma glink_vma = 0, resolv_vma = 0;
3452 asection *dynamic, *glink = NULL, *relplt = NULL;
3455 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3457 free_contents_and_exit_err:
3459 free_contents_and_exit:
3466 for (i = secsymend; i < opdsymend; ++i)
3470 /* Ignore bogus symbols. */
3471 if (syms[i]->value > opd->size - 8)
3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3478 size += sizeof (asymbol);
3479 size += strlen (syms[i]->name) + 2;
3483 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3485 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3487 bfd_byte *dynbuf, *extdyn, *extdynend;
3489 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3491 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3492 goto free_contents_and_exit_err;
3494 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3495 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3498 extdynend = extdyn + dynamic->size;
3499 for (; extdyn < extdynend; extdyn += extdynsize)
3501 Elf_Internal_Dyn dyn;
3502 (*swap_dyn_in) (abfd, extdyn, &dyn);
3504 if (dyn.d_tag == DT_NULL)
3507 if (dyn.d_tag == DT_PPC64_GLINK)
3509 /* The first glink stub starts at offset 32; see
3510 comment in ppc64_elf_finish_dynamic_sections. */
3511 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3512 /* The .glink section usually does not survive the final
3513 link; search for the section (usually .text) where the
3514 glink stubs now reside. */
3515 glink = bfd_sections_find_if (abfd, section_covers_vma,
3526 /* Determine __glink trampoline by reading the relative branch
3527 from the first glink stub. */
3529 unsigned int off = 0;
3531 while (bfd_get_section_contents (abfd, glink, buf,
3532 glink_vma + off - glink->vma, 4))
3534 unsigned int insn = bfd_get_32 (abfd, buf);
3536 if ((insn & ~0x3fffffc) == 0)
3538 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3547 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3549 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3552 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3553 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3554 goto free_contents_and_exit_err;
3556 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3557 size += plt_count * sizeof (asymbol);
3559 p = relplt->relocation;
3560 for (i = 0; i < plt_count; i++, p++)
3562 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3564 size += sizeof ("+0x") - 1 + 16;
3570 goto free_contents_and_exit;
3571 s = *ret = bfd_malloc (size);
3573 goto free_contents_and_exit_err;
3575 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3577 for (i = secsymend; i < opdsymend; ++i)
3581 if (syms[i]->value > opd->size - 8)
3584 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3585 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3589 asection *sec = abfd->sections;
3596 long mid = (lo + hi) >> 1;
3597 if (syms[mid]->section->vma < ent)
3599 else if (syms[mid]->section->vma > ent)
3603 sec = syms[mid]->section;
3608 if (lo >= hi && lo > codesecsym)
3609 sec = syms[lo - 1]->section;
3611 for (; sec != NULL; sec = sec->next)
3615 /* SEC_LOAD may not be set if SEC is from a separate debug
3617 if ((sec->flags & SEC_ALLOC) == 0)
3619 if ((sec->flags & SEC_CODE) != 0)
3622 s->flags |= BSF_SYNTHETIC;
3623 s->value = ent - s->section->vma;
3626 len = strlen (syms[i]->name);
3627 memcpy (names, syms[i]->name, len + 1);
3629 /* Have udata.p point back to the original symbol this
3630 synthetic symbol was derived from. */
3631 s->udata.p = syms[i];
3637 if (glink != NULL && relplt != NULL)
3641 /* Add a symbol for the main glink trampoline. */
3642 memset (s, 0, sizeof *s);
3644 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3646 s->value = resolv_vma - glink->vma;
3648 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3649 names += sizeof ("__glink_PLTresolve");
3654 /* FIXME: It would be very much nicer to put sym@plt on the
3655 stub rather than on the glink branch table entry. The
3656 objdump disassembler would then use a sensible symbol
3657 name on plt calls. The difficulty in doing so is
3658 a) finding the stubs, and,
3659 b) matching stubs against plt entries, and,
3660 c) there can be multiple stubs for a given plt entry.
3662 Solving (a) could be done by code scanning, but older
3663 ppc64 binaries used different stubs to current code.
3664 (b) is the tricky one since you need to known the toc
3665 pointer for at least one function that uses a pic stub to
3666 be able to calculate the plt address referenced.
3667 (c) means gdb would need to set multiple breakpoints (or
3668 find the glink branch itself) when setting breakpoints
3669 for pending shared library loads. */
3670 p = relplt->relocation;
3671 for (i = 0; i < plt_count; i++, p++)
3675 *s = **p->sym_ptr_ptr;
3676 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3677 we are defining a symbol, ensure one of them is set. */
3678 if ((s->flags & BSF_LOCAL) == 0)
3679 s->flags |= BSF_GLOBAL;
3680 s->flags |= BSF_SYNTHETIC;
3682 s->value = glink_vma - glink->vma;
3685 len = strlen ((*p->sym_ptr_ptr)->name);
3686 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3690 memcpy (names, "+0x", sizeof ("+0x") - 1);
3691 names += sizeof ("+0x") - 1;
3692 bfd_sprintf_vma (abfd, names, p->addend);
3693 names += strlen (names);
3695 memcpy (names, "@plt", sizeof ("@plt"));
3696 names += sizeof ("@plt");
3716 /* The following functions are specific to the ELF linker, while
3717 functions above are used generally. Those named ppc64_elf_* are
3718 called by the main ELF linker code. They appear in this file more
3719 or less in the order in which they are called. eg.
3720 ppc64_elf_check_relocs is called early in the link process,
3721 ppc64_elf_finish_dynamic_sections is one of the last functions
3724 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3725 functions have both a function code symbol and a function descriptor
3726 symbol. A call to foo in a relocatable object file looks like:
3733 The function definition in another object file might be:
3737 . .quad .TOC.@tocbase
3743 When the linker resolves the call during a static link, the branch
3744 unsurprisingly just goes to .foo and the .opd information is unused.
3745 If the function definition is in a shared library, things are a little
3746 different: The call goes via a plt call stub, the opd information gets
3747 copied to the plt, and the linker patches the nop.
3755 . std 2,40(1) # in practice, the call stub
3756 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3757 . addi 11,11,Lfoo@toc@l # this is the general idea
3765 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3767 The "reloc ()" notation is supposed to indicate that the linker emits
3768 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3771 What are the difficulties here? Well, firstly, the relocations
3772 examined by the linker in check_relocs are against the function code
3773 sym .foo, while the dynamic relocation in the plt is emitted against
3774 the function descriptor symbol, foo. Somewhere along the line, we need
3775 to carefully copy dynamic link information from one symbol to the other.
3776 Secondly, the generic part of the elf linker will make .foo a dynamic
3777 symbol as is normal for most other backends. We need foo dynamic
3778 instead, at least for an application final link. However, when
3779 creating a shared library containing foo, we need to have both symbols
3780 dynamic so that references to .foo are satisfied during the early
3781 stages of linking. Otherwise the linker might decide to pull in a
3782 definition from some other object, eg. a static library.
3784 Update: As of August 2004, we support a new convention. Function
3785 calls may use the function descriptor symbol, ie. "bl foo". This
3786 behaves exactly as "bl .foo". */
3788 /* Of those relocs that might be copied as dynamic relocs, this function
3789 selects those that must be copied when linking a shared library,
3790 even when the symbol is local. */
3793 must_be_dyn_reloc (struct bfd_link_info *info,
3794 enum elf_ppc64_reloc_type r_type)
3806 case R_PPC64_TPREL16:
3807 case R_PPC64_TPREL16_LO:
3808 case R_PPC64_TPREL16_HI:
3809 case R_PPC64_TPREL16_HA:
3810 case R_PPC64_TPREL16_DS:
3811 case R_PPC64_TPREL16_LO_DS:
3812 case R_PPC64_TPREL16_HIGH:
3813 case R_PPC64_TPREL16_HIGHA:
3814 case R_PPC64_TPREL16_HIGHER:
3815 case R_PPC64_TPREL16_HIGHERA:
3816 case R_PPC64_TPREL16_HIGHEST:
3817 case R_PPC64_TPREL16_HIGHESTA:
3818 case R_PPC64_TPREL64:
3819 return !bfd_link_executable (info);
3823 /* Whether an undefined weak symbol should resolve to its link-time
3824 value, even in PIC or PIE objects. */
3825 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3826 ((H)->root.type == bfd_link_hash_undefweak \
3827 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3828 || (INFO)->dynamic_undefined_weak == 0))
3830 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3831 copying dynamic variables from a shared lib into an app's dynbss
3832 section, and instead use a dynamic relocation to point into the
3833 shared lib. With code that gcc generates, it's vital that this be
3834 enabled; In the PowerPC64 ABI, the address of a function is actually
3835 the address of a function descriptor, which resides in the .opd
3836 section. gcc uses the descriptor directly rather than going via the
3837 GOT as some other ABI's do, which means that initialized function
3838 pointers must reference the descriptor. Thus, a function pointer
3839 initialized to the address of a function in a shared library will
3840 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3841 redefines the function descriptor symbol to point to the copy. This
3842 presents a problem as a plt entry for that function is also
3843 initialized from the function descriptor symbol and the copy reloc
3844 may not be initialized first. */
3845 #define ELIMINATE_COPY_RELOCS 1
3847 /* Section name for stubs is the associated section name plus this
3849 #define STUB_SUFFIX ".stub"
3852 ppc_stub_long_branch:
3853 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3854 destination, but a 24 bit branch in a stub section will reach.
3857 ppc_stub_plt_branch:
3858 Similar to the above, but a 24 bit branch in the stub section won't
3859 reach its destination.
3860 . addis %r11,%r2,xxx@toc@ha
3861 . ld %r12,xxx@toc@l(%r11)
3866 Used to call a function in a shared library. If it so happens that
3867 the plt entry referenced crosses a 64k boundary, then an extra
3868 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3870 . addis %r11,%r2,xxx@toc@ha
3871 . ld %r12,xxx+0@toc@l(%r11)
3873 . ld %r2,xxx+8@toc@l(%r11)
3874 . ld %r11,xxx+16@toc@l(%r11)
3877 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3878 code to adjust the value and save r2 to support multiple toc sections.
3879 A ppc_stub_long_branch with an r2 offset looks like:
3881 . addis %r2,%r2,off@ha
3882 . addi %r2,%r2,off@l
3885 A ppc_stub_plt_branch with an r2 offset looks like:
3887 . addis %r11,%r2,xxx@toc@ha
3888 . ld %r12,xxx@toc@l(%r11)
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3894 In cases where the "addis" instruction would add zero, the "addis" is
3895 omitted and following instructions modified slightly in some cases.
3898 enum ppc_stub_type {
3900 ppc_stub_long_branch,
3901 ppc_stub_long_branch_r2off,
3902 ppc_stub_plt_branch,
3903 ppc_stub_plt_branch_r2off,
3905 ppc_stub_plt_call_r2save,
3906 ppc_stub_global_entry,
3910 /* Information on stub grouping. */
3913 /* The stub section. */
3915 /* This is the section to which stubs in the group will be attached. */
3918 struct map_stub *next;
3919 /* Whether to emit a copy of register save/restore functions in this
3924 struct ppc_stub_hash_entry {
3926 /* Base hash table entry structure. */
3927 struct bfd_hash_entry root;
3929 enum ppc_stub_type stub_type;
3931 /* Group information. */
3932 struct map_stub *group;
3934 /* Offset within stub_sec of the beginning of this stub. */
3935 bfd_vma stub_offset;
3937 /* Given the symbol's value and its section we can determine its final
3938 value when building the stubs (so the stub knows where to jump. */
3939 bfd_vma target_value;
3940 asection *target_section;
3942 /* The symbol table entry, if any, that this was derived from. */
3943 struct ppc_link_hash_entry *h;
3944 struct plt_entry *plt_ent;
3946 /* Symbol st_other. */
3947 unsigned char other;
3950 struct ppc_branch_hash_entry {
3952 /* Base hash table entry structure. */
3953 struct bfd_hash_entry root;
3955 /* Offset within branch lookup table. */
3956 unsigned int offset;
3958 /* Generation marker. */
3962 /* Used to track dynamic relocations for local symbols. */
3963 struct ppc_dyn_relocs
3965 struct ppc_dyn_relocs *next;
3967 /* The input section of the reloc. */
3970 /* Total number of relocs copied for the input section. */
3971 unsigned int count : 31;
3973 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3974 unsigned int ifunc : 1;
3977 struct ppc_link_hash_entry
3979 struct elf_link_hash_entry elf;
3982 /* A pointer to the most recently used stub hash entry against this
3984 struct ppc_stub_hash_entry *stub_cache;
3986 /* A pointer to the next symbol starting with a '.' */
3987 struct ppc_link_hash_entry *next_dot_sym;
3990 /* Track dynamic relocs copied for this symbol. */
3991 struct elf_dyn_relocs *dyn_relocs;
3993 /* Chain of aliases referring to a weakdef. */
3994 struct ppc_link_hash_entry *weakref;
3996 /* Link between function code and descriptor symbols. */
3997 struct ppc_link_hash_entry *oh;
3999 /* Flag function code and descriptor symbols. */
4000 unsigned int is_func:1;
4001 unsigned int is_func_descriptor:1;
4002 unsigned int fake:1;
4004 /* Whether global opd/toc sym has been adjusted or not.
4005 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4006 should be set for all globals defined in any opd/toc section. */
4007 unsigned int adjust_done:1;
4009 /* Set if this is an out-of-line register save/restore function,
4010 with non-standard calling convention. */
4011 unsigned int save_res:1;
4013 /* Contexts in which symbol is used in the GOT (or TOC).
4014 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4015 corresponding relocs are encountered during check_relocs.
4016 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4017 indicate the corresponding GOT entry type is not needed.
4018 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4019 a TPREL one. We use a separate flag rather than setting TPREL
4020 just for convenience in distinguishing the two cases. */
4021 #define TLS_GD 1 /* GD reloc. */
4022 #define TLS_LD 2 /* LD reloc. */
4023 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4024 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4025 #define TLS_TLS 16 /* Any TLS reloc. */
4026 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4027 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4028 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4029 unsigned char tls_mask;
4032 /* ppc64 ELF linker hash table. */
4034 struct ppc_link_hash_table
4036 struct elf_link_hash_table elf;
4038 /* The stub hash table. */
4039 struct bfd_hash_table stub_hash_table;
4041 /* Another hash table for plt_branch stubs. */
4042 struct bfd_hash_table branch_hash_table;
4044 /* Hash table for function prologue tocsave. */
4045 htab_t tocsave_htab;
4047 /* Various options and other info passed from the linker. */
4048 struct ppc64_elf_params *params;
4050 /* The size of sec_info below. */
4051 unsigned int sec_info_arr_size;
4053 /* Per-section array of extra section info. Done this way rather
4054 than as part of ppc64_elf_section_data so we have the info for
4055 non-ppc64 sections. */
4058 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4063 /* The section group that this section belongs to. */
4064 struct map_stub *group;
4065 /* A temp section list pointer. */
4070 /* Linked list of groups. */
4071 struct map_stub *group;
4073 /* Temp used when calculating TOC pointers. */
4076 asection *toc_first_sec;
4078 /* Used when adding symbols. */
4079 struct ppc_link_hash_entry *dot_syms;
4081 /* Shortcuts to get to dynamic linker sections. */
4086 asection *glink_eh_frame;
4088 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4089 struct ppc_link_hash_entry *tls_get_addr;
4090 struct ppc_link_hash_entry *tls_get_addr_fd;
4092 /* The size of reliplt used by got entry relocs. */
4093 bfd_size_type got_reli_size;
4096 unsigned long stub_count[ppc_stub_global_entry];
4098 /* Number of stubs against global syms. */
4099 unsigned long stub_globals;
4101 /* Set if we're linking code with function descriptors. */
4102 unsigned int opd_abi:1;
4104 /* Support for multiple toc sections. */
4105 unsigned int do_multi_toc:1;
4106 unsigned int multi_toc_needed:1;
4107 unsigned int second_toc_pass:1;
4108 unsigned int do_toc_opt:1;
4111 unsigned int stub_error:1;
4113 /* Whether func_desc_adjust needs to be run over symbols. */
4114 unsigned int need_func_desc_adj:1;
4116 /* Whether there exist local gnu indirect function resolvers,
4117 referenced by dynamic relocations. */
4118 unsigned int local_ifunc_resolver:1;
4119 unsigned int maybe_local_ifunc_resolver:1;
4121 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4122 unsigned int has_plt_localentry0:1;
4124 /* Incremented every time we size stubs. */
4125 unsigned int stub_iteration;
4127 /* Small local sym cache. */
4128 struct sym_cache sym_cache;
4131 /* Rename some of the generic section flags to better document how they
4134 /* Nonzero if this section has TLS related relocations. */
4135 #define has_tls_reloc sec_flg0
4137 /* Nonzero if this section has a call to __tls_get_addr. */
4138 #define has_tls_get_addr_call sec_flg1
4140 /* Nonzero if this section has any toc or got relocs. */
4141 #define has_toc_reloc sec_flg2
4143 /* Nonzero if this section has a call to another section that uses
4145 #define makes_toc_func_call sec_flg3
4147 /* Recursion protection when determining above flag. */
4148 #define call_check_in_progress sec_flg4
4149 #define call_check_done sec_flg5
4151 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4153 #define ppc_hash_table(p) \
4154 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4155 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4157 #define ppc_stub_hash_lookup(table, string, create, copy) \
4158 ((struct ppc_stub_hash_entry *) \
4159 bfd_hash_lookup ((table), (string), (create), (copy)))
4161 #define ppc_branch_hash_lookup(table, string, create, copy) \
4162 ((struct ppc_branch_hash_entry *) \
4163 bfd_hash_lookup ((table), (string), (create), (copy)))
4165 /* Create an entry in the stub hash table. */
4167 static struct bfd_hash_entry *
4168 stub_hash_newfunc (struct bfd_hash_entry *entry,
4169 struct bfd_hash_table *table,
4172 /* Allocate the structure if it has not already been allocated by a
4176 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4181 /* Call the allocation method of the superclass. */
4182 entry = bfd_hash_newfunc (entry, table, string);
4185 struct ppc_stub_hash_entry *eh;
4187 /* Initialize the local fields. */
4188 eh = (struct ppc_stub_hash_entry *) entry;
4189 eh->stub_type = ppc_stub_none;
4191 eh->stub_offset = 0;
4192 eh->target_value = 0;
4193 eh->target_section = NULL;
4202 /* Create an entry in the branch hash table. */
4204 static struct bfd_hash_entry *
4205 branch_hash_newfunc (struct bfd_hash_entry *entry,
4206 struct bfd_hash_table *table,
4209 /* Allocate the structure if it has not already been allocated by a
4213 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4218 /* Call the allocation method of the superclass. */
4219 entry = bfd_hash_newfunc (entry, table, string);
4222 struct ppc_branch_hash_entry *eh;
4224 /* Initialize the local fields. */
4225 eh = (struct ppc_branch_hash_entry *) entry;
4233 /* Create an entry in a ppc64 ELF linker hash table. */
4235 static struct bfd_hash_entry *
4236 link_hash_newfunc (struct bfd_hash_entry *entry,
4237 struct bfd_hash_table *table,
4240 /* Allocate the structure if it has not already been allocated by a
4244 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4249 /* Call the allocation method of the superclass. */
4250 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4253 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4255 memset (&eh->u.stub_cache, 0,
4256 (sizeof (struct ppc_link_hash_entry)
4257 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4259 /* When making function calls, old ABI code references function entry
4260 points (dot symbols), while new ABI code references the function
4261 descriptor symbol. We need to make any combination of reference and
4262 definition work together, without breaking archive linking.
4264 For a defined function "foo" and an undefined call to "bar":
4265 An old object defines "foo" and ".foo", references ".bar" (possibly
4267 A new object defines "foo" and references "bar".
4269 A new object thus has no problem with its undefined symbols being
4270 satisfied by definitions in an old object. On the other hand, the
4271 old object won't have ".bar" satisfied by a new object.
4273 Keep a list of newly added dot-symbols. */
4275 if (string[0] == '.')
4277 struct ppc_link_hash_table *htab;
4279 htab = (struct ppc_link_hash_table *) table;
4280 eh->u.next_dot_sym = htab->dot_syms;
4281 htab->dot_syms = eh;
4288 struct tocsave_entry {
4294 tocsave_htab_hash (const void *p)
4296 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4297 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4301 tocsave_htab_eq (const void *p1, const void *p2)
4303 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4304 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4305 return e1->sec == e2->sec && e1->offset == e2->offset;
4308 /* Destroy a ppc64 ELF linker hash table. */
4311 ppc64_elf_link_hash_table_free (bfd *obfd)
4313 struct ppc_link_hash_table *htab;
4315 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4316 if (htab->tocsave_htab)
4317 htab_delete (htab->tocsave_htab);
4318 bfd_hash_table_free (&htab->branch_hash_table);
4319 bfd_hash_table_free (&htab->stub_hash_table);
4320 _bfd_elf_link_hash_table_free (obfd);
4323 /* Create a ppc64 ELF linker hash table. */
4325 static struct bfd_link_hash_table *
4326 ppc64_elf_link_hash_table_create (bfd *abfd)
4328 struct ppc_link_hash_table *htab;
4329 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4331 htab = bfd_zmalloc (amt);
4335 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4336 sizeof (struct ppc_link_hash_entry),
4343 /* Init the stub hash table too. */
4344 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4345 sizeof (struct ppc_stub_hash_entry)))
4347 _bfd_elf_link_hash_table_free (abfd);
4351 /* And the branch hash table. */
4352 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4353 sizeof (struct ppc_branch_hash_entry)))
4355 bfd_hash_table_free (&htab->stub_hash_table);
4356 _bfd_elf_link_hash_table_free (abfd);
4360 htab->tocsave_htab = htab_try_create (1024,
4364 if (htab->tocsave_htab == NULL)
4366 ppc64_elf_link_hash_table_free (abfd);
4369 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4371 /* Initializing two fields of the union is just cosmetic. We really
4372 only care about glist, but when compiled on a 32-bit host the
4373 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4374 debugger inspection of these fields look nicer. */
4375 htab->elf.init_got_refcount.refcount = 0;
4376 htab->elf.init_got_refcount.glist = NULL;
4377 htab->elf.init_plt_refcount.refcount = 0;
4378 htab->elf.init_plt_refcount.glist = NULL;
4379 htab->elf.init_got_offset.offset = 0;
4380 htab->elf.init_got_offset.glist = NULL;
4381 htab->elf.init_plt_offset.offset = 0;
4382 htab->elf.init_plt_offset.glist = NULL;
4384 return &htab->elf.root;
4387 /* Create sections for linker generated code. */
4390 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4392 struct ppc_link_hash_table *htab;
4395 htab = ppc_hash_table (info);
4397 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4398 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4399 if (htab->params->save_restore_funcs)
4401 /* Create .sfpr for code to save and restore fp regs. */
4402 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4404 if (htab->sfpr == NULL
4405 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4409 if (bfd_link_relocatable (info))
4412 /* Create .glink for lazy dynamic linking support. */
4413 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4415 if (htab->glink == NULL
4416 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4419 if (!info->no_ld_generated_unwind_info)
4421 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4422 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4423 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4426 if (htab->glink_eh_frame == NULL
4427 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4431 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4432 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4433 if (htab->elf.iplt == NULL
4434 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4437 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4438 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4440 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4441 if (htab->elf.irelplt == NULL
4442 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4445 /* Create branch lookup table for plt_branch stubs. */
4446 flags = (SEC_ALLOC | SEC_LOAD
4447 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4448 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4450 if (htab->brlt == NULL
4451 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4454 if (!bfd_link_pic (info))
4457 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4458 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4459 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4462 if (htab->relbrlt == NULL
4463 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4469 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4472 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4473 struct ppc64_elf_params *params)
4475 struct ppc_link_hash_table *htab;
4477 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4479 /* Always hook our dynamic sections into the first bfd, which is the
4480 linker created stub bfd. This ensures that the GOT header is at
4481 the start of the output TOC section. */
4482 htab = ppc_hash_table (info);
4483 htab->elf.dynobj = params->stub_bfd;
4484 htab->params = params;
4486 return create_linkage_sections (htab->elf.dynobj, info);
4489 /* Build a name for an entry in the stub hash table. */
4492 ppc_stub_name (const asection *input_section,
4493 const asection *sym_sec,
4494 const struct ppc_link_hash_entry *h,
4495 const Elf_Internal_Rela *rel)
4500 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4501 offsets from a sym as a branch target? In fact, we could
4502 probably assume the addend is always zero. */
4503 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4507 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4508 stub_name = bfd_malloc (len);
4509 if (stub_name == NULL)
4512 len = sprintf (stub_name, "%08x.%s+%x",
4513 input_section->id & 0xffffffff,
4514 h->elf.root.root.string,
4515 (int) rel->r_addend & 0xffffffff);
4519 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4520 stub_name = bfd_malloc (len);
4521 if (stub_name == NULL)
4524 len = sprintf (stub_name, "%08x.%x:%x+%x",
4525 input_section->id & 0xffffffff,
4526 sym_sec->id & 0xffffffff,
4527 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4528 (int) rel->r_addend & 0xffffffff);
4530 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4531 stub_name[len - 2] = 0;
4535 /* Look up an entry in the stub hash. Stub entries are cached because
4536 creating the stub name takes a bit of time. */
4538 static struct ppc_stub_hash_entry *
4539 ppc_get_stub_entry (const asection *input_section,
4540 const asection *sym_sec,
4541 struct ppc_link_hash_entry *h,
4542 const Elf_Internal_Rela *rel,
4543 struct ppc_link_hash_table *htab)
4545 struct ppc_stub_hash_entry *stub_entry;
4546 struct map_stub *group;
4548 /* If this input section is part of a group of sections sharing one
4549 stub section, then use the id of the first section in the group.
4550 Stub names need to include a section id, as there may well be
4551 more than one stub used to reach say, printf, and we need to
4552 distinguish between them. */
4553 group = htab->sec_info[input_section->id].u.group;
4557 if (h != NULL && h->u.stub_cache != NULL
4558 && h->u.stub_cache->h == h
4559 && h->u.stub_cache->group == group)
4561 stub_entry = h->u.stub_cache;
4567 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4568 if (stub_name == NULL)
4571 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4572 stub_name, FALSE, FALSE);
4574 h->u.stub_cache = stub_entry;
4582 /* Add a new stub entry to the stub hash. Not all fields of the new
4583 stub entry are initialised. */
4585 static struct ppc_stub_hash_entry *
4586 ppc_add_stub (const char *stub_name,
4588 struct bfd_link_info *info)
4590 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4591 struct map_stub *group;
4594 struct ppc_stub_hash_entry *stub_entry;
4596 group = htab->sec_info[section->id].u.group;
4597 link_sec = group->link_sec;
4598 stub_sec = group->stub_sec;
4599 if (stub_sec == NULL)
4605 namelen = strlen (link_sec->name);
4606 len = namelen + sizeof (STUB_SUFFIX);
4607 s_name = bfd_alloc (htab->params->stub_bfd, len);
4611 memcpy (s_name, link_sec->name, namelen);
4612 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4613 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4614 if (stub_sec == NULL)
4616 group->stub_sec = stub_sec;
4619 /* Enter this entry into the linker stub hash table. */
4620 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4622 if (stub_entry == NULL)
4624 /* xgettext:c-format */
4625 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4626 section->owner, stub_name);
4630 stub_entry->group = group;
4631 stub_entry->stub_offset = 0;
4635 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4636 not already done. */
4639 create_got_section (bfd *abfd, struct bfd_link_info *info)
4641 asection *got, *relgot;
4643 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4645 if (!is_ppc64_elf (abfd))
4651 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4654 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4655 | SEC_LINKER_CREATED);
4657 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4659 || !bfd_set_section_alignment (abfd, got, 3))
4662 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4663 flags | SEC_READONLY);
4665 || ! bfd_set_section_alignment (abfd, relgot, 3))
4668 ppc64_elf_tdata (abfd)->got = got;
4669 ppc64_elf_tdata (abfd)->relgot = relgot;
4673 /* Follow indirect and warning symbol links. */
4675 static inline struct bfd_link_hash_entry *
4676 follow_link (struct bfd_link_hash_entry *h)
4678 while (h->type == bfd_link_hash_indirect
4679 || h->type == bfd_link_hash_warning)
4684 static inline struct elf_link_hash_entry *
4685 elf_follow_link (struct elf_link_hash_entry *h)
4687 return (struct elf_link_hash_entry *) follow_link (&h->root);
4690 static inline struct ppc_link_hash_entry *
4691 ppc_follow_link (struct ppc_link_hash_entry *h)
4693 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4696 /* Merge PLT info on FROM with that on TO. */
4699 move_plt_plist (struct ppc_link_hash_entry *from,
4700 struct ppc_link_hash_entry *to)
4702 if (from->elf.plt.plist != NULL)
4704 if (to->elf.plt.plist != NULL)
4706 struct plt_entry **entp;
4707 struct plt_entry *ent;
4709 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4711 struct plt_entry *dent;
4713 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4714 if (dent->addend == ent->addend)
4716 dent->plt.refcount += ent->plt.refcount;
4723 *entp = to->elf.plt.plist;
4726 to->elf.plt.plist = from->elf.plt.plist;
4727 from->elf.plt.plist = NULL;
4731 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4734 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4735 struct elf_link_hash_entry *dir,
4736 struct elf_link_hash_entry *ind)
4738 struct ppc_link_hash_entry *edir, *eind;
4740 edir = (struct ppc_link_hash_entry *) dir;
4741 eind = (struct ppc_link_hash_entry *) ind;
4743 edir->is_func |= eind->is_func;
4744 edir->is_func_descriptor |= eind->is_func_descriptor;
4745 edir->tls_mask |= eind->tls_mask;
4746 if (eind->oh != NULL)
4747 edir->oh = ppc_follow_link (eind->oh);
4749 /* If called to transfer flags for a weakdef during processing
4750 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4751 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4752 if (!(ELIMINATE_COPY_RELOCS
4753 && eind->elf.root.type != bfd_link_hash_indirect
4754 && edir->elf.dynamic_adjusted))
4755 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4757 if (edir->elf.versioned != versioned_hidden)
4758 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4759 edir->elf.ref_regular |= eind->elf.ref_regular;
4760 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4761 edir->elf.needs_plt |= eind->elf.needs_plt;
4762 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4764 /* If we were called to copy over info for a weak sym, don't copy
4765 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4766 in order to simplify readonly_dynrelocs and save a field in the
4767 symbol hash entry, but that means dyn_relocs can't be used in any
4768 tests about a specific symbol, or affect other symbol flags which
4770 Chain weakdefs so we can get from the weakdef back to an alias.
4771 The list is circular so that we don't need to use u.weakdef as
4772 well as this list to look at all aliases. */
4773 if (eind->elf.root.type != bfd_link_hash_indirect)
4775 struct ppc_link_hash_entry *cur, *add, *next;
4780 cur = edir->weakref;
4785 /* We can be called twice for the same symbols.
4786 Don't make multiple loops. */
4790 } while (cur != edir);
4792 next = add->weakref;
4795 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4796 edir->weakref = add;
4799 } while (add != NULL && add != eind);
4803 /* Copy over any dynamic relocs we may have on the indirect sym. */
4804 if (eind->dyn_relocs != NULL)
4806 if (edir->dyn_relocs != NULL)
4808 struct elf_dyn_relocs **pp;
4809 struct elf_dyn_relocs *p;
4811 /* Add reloc counts against the indirect sym to the direct sym
4812 list. Merge any entries against the same section. */
4813 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4815 struct elf_dyn_relocs *q;
4817 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4818 if (q->sec == p->sec)
4820 q->pc_count += p->pc_count;
4821 q->count += p->count;
4828 *pp = edir->dyn_relocs;
4831 edir->dyn_relocs = eind->dyn_relocs;
4832 eind->dyn_relocs = NULL;
4835 /* Copy over got entries that we may have already seen to the
4836 symbol which just became indirect. */
4837 if (eind->elf.got.glist != NULL)
4839 if (edir->elf.got.glist != NULL)
4841 struct got_entry **entp;
4842 struct got_entry *ent;
4844 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4846 struct got_entry *dent;
4848 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4849 if (dent->addend == ent->addend
4850 && dent->owner == ent->owner
4851 && dent->tls_type == ent->tls_type)
4853 dent->got.refcount += ent->got.refcount;
4860 *entp = edir->elf.got.glist;
4863 edir->elf.got.glist = eind->elf.got.glist;
4864 eind->elf.got.glist = NULL;
4867 /* And plt entries. */
4868 move_plt_plist (eind, edir);
4870 if (eind->elf.dynindx != -1)
4872 if (edir->elf.dynindx != -1)
4873 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4874 edir->elf.dynstr_index);
4875 edir->elf.dynindx = eind->elf.dynindx;
4876 edir->elf.dynstr_index = eind->elf.dynstr_index;
4877 eind->elf.dynindx = -1;
4878 eind->elf.dynstr_index = 0;
4882 /* Find the function descriptor hash entry from the given function code
4883 hash entry FH. Link the entries via their OH fields. */
4885 static struct ppc_link_hash_entry *
4886 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4888 struct ppc_link_hash_entry *fdh = fh->oh;
4892 const char *fd_name = fh->elf.root.root.string + 1;
4894 fdh = (struct ppc_link_hash_entry *)
4895 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4899 fdh->is_func_descriptor = 1;
4905 fdh = ppc_follow_link (fdh);
4906 fdh->is_func_descriptor = 1;
4911 /* Make a fake function descriptor sym for the undefined code sym FH. */
4913 static struct ppc_link_hash_entry *
4914 make_fdh (struct bfd_link_info *info,
4915 struct ppc_link_hash_entry *fh)
4917 bfd *abfd = fh->elf.root.u.undef.abfd;
4918 struct bfd_link_hash_entry *bh = NULL;
4919 struct ppc_link_hash_entry *fdh;
4920 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4924 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4925 fh->elf.root.root.string + 1,
4926 flags, bfd_und_section_ptr, 0,
4927 NULL, FALSE, FALSE, &bh))
4930 fdh = (struct ppc_link_hash_entry *) bh;
4931 fdh->elf.non_elf = 0;
4933 fdh->is_func_descriptor = 1;
4940 /* Fix function descriptor symbols defined in .opd sections to be
4944 ppc64_elf_add_symbol_hook (bfd *ibfd,
4945 struct bfd_link_info *info,
4946 Elf_Internal_Sym *isym,
4948 flagword *flags ATTRIBUTE_UNUSED,
4952 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4953 && (ibfd->flags & DYNAMIC) == 0
4954 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4955 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4958 && strcmp ((*sec)->name, ".opd") == 0)
4962 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4963 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4964 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4966 /* If the symbol is a function defined in .opd, and the function
4967 code is in a discarded group, let it appear to be undefined. */
4968 if (!bfd_link_relocatable (info)
4969 && (*sec)->reloc_count != 0
4970 && opd_entry_value (*sec, *value, &code_sec, NULL,
4971 FALSE) != (bfd_vma) -1
4972 && discarded_section (code_sec))
4974 *sec = bfd_und_section_ptr;
4975 isym->st_shndx = SHN_UNDEF;
4978 else if (*sec != NULL
4979 && strcmp ((*sec)->name, ".toc") == 0
4980 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4982 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4984 htab->params->object_in_toc = 1;
4987 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4989 if (abiversion (ibfd) == 0)
4990 set_abiversion (ibfd, 2);
4991 else if (abiversion (ibfd) == 1)
4993 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4994 " for ABI version 1\n"), name);
4995 bfd_set_error (bfd_error_bad_value);
5003 /* Merge non-visibility st_other attributes: local entry point. */
5006 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5007 const Elf_Internal_Sym *isym,
5008 bfd_boolean definition,
5009 bfd_boolean dynamic)
5011 if (definition && (!dynamic || !h->def_regular))
5012 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5013 | ELF_ST_VISIBILITY (h->other));
5016 /* Hook called on merging a symbol. We use this to clear "fake" since
5017 we now have a real symbol. */
5020 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5021 const Elf_Internal_Sym *isym ATTRIBUTE_UNUSED,
5022 asection **psec ATTRIBUTE_UNUSED,
5023 bfd_boolean newdef ATTRIBUTE_UNUSED,
5024 bfd_boolean olddef ATTRIBUTE_UNUSED,
5025 bfd *oldbfd ATTRIBUTE_UNUSED,
5026 const asection *oldsec ATTRIBUTE_UNUSED)
5028 ((struct ppc_link_hash_entry *) h)->fake = 0;
5032 /* This function makes an old ABI object reference to ".bar" cause the
5033 inclusion of a new ABI object archive that defines "bar".
5034 NAME is a symbol defined in an archive. Return a symbol in the hash
5035 table that might be satisfied by the archive symbols. */
5037 static struct elf_link_hash_entry *
5038 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5039 struct bfd_link_info *info,
5042 struct elf_link_hash_entry *h;
5046 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5048 /* Don't return this sym if it is a fake function descriptor
5049 created by add_symbol_adjust. */
5050 && !((struct ppc_link_hash_entry *) h)->fake)
5056 len = strlen (name);
5057 dot_name = bfd_alloc (abfd, len + 2);
5058 if (dot_name == NULL)
5059 return (struct elf_link_hash_entry *) 0 - 1;
5061 memcpy (dot_name + 1, name, len + 1);
5062 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5063 bfd_release (abfd, dot_name);
5067 /* This function satisfies all old ABI object references to ".bar" if a
5068 new ABI object defines "bar". Well, at least, undefined dot symbols
5069 are made weak. This stops later archive searches from including an
5070 object if we already have a function descriptor definition. It also
5071 prevents the linker complaining about undefined symbols.
5072 We also check and correct mismatched symbol visibility here. The
5073 most restrictive visibility of the function descriptor and the
5074 function entry symbol is used. */
5077 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5079 struct ppc_link_hash_table *htab;
5080 struct ppc_link_hash_entry *fdh;
5082 if (eh->elf.root.type == bfd_link_hash_warning)
5083 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5085 if (eh->elf.root.type == bfd_link_hash_indirect)
5088 if (eh->elf.root.root.string[0] != '.')
5091 htab = ppc_hash_table (info);
5095 fdh = lookup_fdh (eh, htab);
5097 && !bfd_link_relocatable (info)
5098 && (eh->elf.root.type == bfd_link_hash_undefined
5099 || eh->elf.root.type == bfd_link_hash_undefweak)
5100 && eh->elf.ref_regular)
5102 /* Make an undefined function descriptor sym, in order to
5103 pull in an --as-needed shared lib. Archives are handled
5105 fdh = make_fdh (info, eh);
5112 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5113 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5115 /* Make both descriptor and entry symbol have the most
5116 constraining visibility of either symbol. */
5117 if (entry_vis < descr_vis)
5118 fdh->elf.other += entry_vis - descr_vis;
5119 else if (entry_vis > descr_vis)
5120 eh->elf.other += descr_vis - entry_vis;
5122 /* Propagate reference flags from entry symbol to function
5123 descriptor symbol. */
5124 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5125 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5126 fdh->elf.ref_regular |= eh->elf.ref_regular;
5127 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5129 if (!fdh->elf.forced_local
5130 && fdh->elf.dynindx == -1
5131 && fdh->elf.versioned != versioned_hidden
5132 && (bfd_link_dll (info)
5133 || fdh->elf.def_dynamic
5134 || fdh->elf.ref_dynamic)
5135 && (eh->elf.ref_regular
5136 || eh->elf.def_regular))
5138 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5146 /* Set up opd section info and abiversion for IBFD, and process list
5147 of dot-symbols we made in link_hash_newfunc. */
5150 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5152 struct ppc_link_hash_table *htab;
5153 struct ppc_link_hash_entry **p, *eh;
5154 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5156 if (opd != NULL && opd->size != 0)
5158 if (abiversion (ibfd) == 0)
5159 set_abiversion (ibfd, 1);
5160 else if (abiversion (ibfd) >= 2)
5162 /* xgettext:c-format */
5163 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5165 ibfd, abiversion (ibfd));
5166 bfd_set_error (bfd_error_bad_value);
5170 if ((ibfd->flags & DYNAMIC) == 0
5171 && (opd->flags & SEC_RELOC) != 0
5172 && opd->reloc_count != 0
5173 && !bfd_is_abs_section (opd->output_section))
5175 /* Garbage collection needs some extra help with .opd sections.
5176 We don't want to necessarily keep everything referenced by
5177 relocs in .opd, as that would keep all functions. Instead,
5178 if we reference an .opd symbol (a function descriptor), we
5179 want to keep the function code symbol's section. This is
5180 easy for global symbols, but for local syms we need to keep
5181 information about the associated function section. */
5183 asection **opd_sym_map;
5185 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5186 opd_sym_map = bfd_zalloc (ibfd, amt);
5187 if (opd_sym_map == NULL)
5189 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5190 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5191 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5195 if (!is_ppc64_elf (info->output_bfd))
5197 htab = ppc_hash_table (info);
5201 /* For input files without an explicit abiversion in e_flags
5202 we should have flagged any with symbol st_other bits set
5203 as ELFv1 and above flagged those with .opd as ELFv2.
5204 Set the output abiversion if not yet set, and for any input
5205 still ambiguous, take its abiversion from the output.
5206 Differences in ABI are reported later. */
5207 if (abiversion (info->output_bfd) == 0)
5208 set_abiversion (info->output_bfd, abiversion (ibfd));
5209 else if (abiversion (ibfd) == 0)
5210 set_abiversion (ibfd, abiversion (info->output_bfd));
5212 p = &htab->dot_syms;
5213 while ((eh = *p) != NULL)
5216 if (&eh->elf == htab->elf.hgot)
5218 else if (htab->elf.hgot == NULL
5219 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5220 htab->elf.hgot = &eh->elf;
5221 else if (abiversion (ibfd) <= 1)
5223 htab->need_func_desc_adj = 1;
5224 if (!add_symbol_adjust (eh, info))
5227 p = &eh->u.next_dot_sym;
5232 /* Undo hash table changes when an --as-needed input file is determined
5233 not to be needed. */
5236 ppc64_elf_notice_as_needed (bfd *ibfd,
5237 struct bfd_link_info *info,
5238 enum notice_asneeded_action act)
5240 if (act == notice_not_needed)
5242 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5247 htab->dot_syms = NULL;
5249 return _bfd_elf_notice_as_needed (ibfd, info, act);
5252 /* If --just-symbols against a final linked binary, then assume we need
5253 toc adjusting stubs when calling functions defined there. */
5256 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5258 if ((sec->flags & SEC_CODE) != 0
5259 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5260 && is_ppc64_elf (sec->owner))
5262 if (abiversion (sec->owner) >= 2
5263 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5264 sec->has_toc_reloc = 1;
5266 _bfd_elf_link_just_syms (sec, info);
5269 static struct plt_entry **
5270 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5271 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5273 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5274 struct plt_entry **local_plt;
5275 unsigned char *local_got_tls_masks;
5277 if (local_got_ents == NULL)
5279 bfd_size_type size = symtab_hdr->sh_info;
5281 size *= (sizeof (*local_got_ents)
5282 + sizeof (*local_plt)
5283 + sizeof (*local_got_tls_masks));
5284 local_got_ents = bfd_zalloc (abfd, size);
5285 if (local_got_ents == NULL)
5287 elf_local_got_ents (abfd) = local_got_ents;
5290 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5292 struct got_entry *ent;
5294 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5295 if (ent->addend == r_addend
5296 && ent->owner == abfd
5297 && ent->tls_type == tls_type)
5301 bfd_size_type amt = sizeof (*ent);
5302 ent = bfd_alloc (abfd, amt);
5305 ent->next = local_got_ents[r_symndx];
5306 ent->addend = r_addend;
5308 ent->tls_type = tls_type;
5309 ent->is_indirect = FALSE;
5310 ent->got.refcount = 0;
5311 local_got_ents[r_symndx] = ent;
5313 ent->got.refcount += 1;
5316 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5317 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5318 local_got_tls_masks[r_symndx] |= tls_type;
5320 return local_plt + r_symndx;
5324 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5326 struct plt_entry *ent;
5328 for (ent = *plist; ent != NULL; ent = ent->next)
5329 if (ent->addend == addend)
5333 bfd_size_type amt = sizeof (*ent);
5334 ent = bfd_alloc (abfd, amt);
5338 ent->addend = addend;
5339 ent->plt.refcount = 0;
5342 ent->plt.refcount += 1;
5347 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5349 return (r_type == R_PPC64_REL24
5350 || r_type == R_PPC64_REL14
5351 || r_type == R_PPC64_REL14_BRTAKEN
5352 || r_type == R_PPC64_REL14_BRNTAKEN
5353 || r_type == R_PPC64_ADDR24
5354 || r_type == R_PPC64_ADDR14
5355 || r_type == R_PPC64_ADDR14_BRTAKEN
5356 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5359 /* Look through the relocs for a section during the first phase, and
5360 calculate needed space in the global offset table, procedure
5361 linkage table, and dynamic reloc sections. */
5364 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5365 asection *sec, const Elf_Internal_Rela *relocs)
5367 struct ppc_link_hash_table *htab;
5368 Elf_Internal_Shdr *symtab_hdr;
5369 struct elf_link_hash_entry **sym_hashes;
5370 const Elf_Internal_Rela *rel;
5371 const Elf_Internal_Rela *rel_end;
5373 asection **opd_sym_map;
5374 struct elf_link_hash_entry *tga, *dottga;
5376 if (bfd_link_relocatable (info))
5379 /* Don't do anything special with non-loaded, non-alloced sections.
5380 In particular, any relocs in such sections should not affect GOT
5381 and PLT reference counting (ie. we don't allow them to create GOT
5382 or PLT entries), there's no possibility or desire to optimize TLS
5383 relocs, and there's not much point in propagating relocs to shared
5384 libs that the dynamic linker won't relocate. */
5385 if ((sec->flags & SEC_ALLOC) == 0)
5388 BFD_ASSERT (is_ppc64_elf (abfd));
5390 htab = ppc_hash_table (info);
5394 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5395 FALSE, FALSE, TRUE);
5396 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5397 FALSE, FALSE, TRUE);
5398 symtab_hdr = &elf_symtab_hdr (abfd);
5399 sym_hashes = elf_sym_hashes (abfd);
5402 if (ppc64_elf_section_data (sec) != NULL
5403 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5404 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5406 rel_end = relocs + sec->reloc_count;
5407 for (rel = relocs; rel < rel_end; rel++)
5409 unsigned long r_symndx;
5410 struct elf_link_hash_entry *h;
5411 enum elf_ppc64_reloc_type r_type;
5413 struct _ppc64_elf_section_data *ppc64_sec;
5414 struct plt_entry **ifunc, **plt_list;
5416 r_symndx = ELF64_R_SYM (rel->r_info);
5417 if (r_symndx < symtab_hdr->sh_info)
5421 struct ppc_link_hash_entry *eh;
5423 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5424 h = elf_follow_link (h);
5425 eh = (struct ppc_link_hash_entry *) h;
5427 /* PR15323, ref flags aren't set for references in the same
5429 h->root.non_ir_ref_regular = 1;
5430 if (eh->is_func && eh->oh != NULL)
5431 eh->oh->elf.root.non_ir_ref_regular = 1;
5433 if (h == htab->elf.hgot)
5434 sec->has_toc_reloc = 1;
5441 if (h->type == STT_GNU_IFUNC)
5444 ifunc = &h->plt.plist;
5449 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5454 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5456 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5457 rel->r_addend, PLT_IFUNC);
5463 r_type = ELF64_R_TYPE (rel->r_info);
5468 /* These special tls relocs tie a call to __tls_get_addr with
5469 its parameter symbol. */
5472 case R_PPC64_GOT_TLSLD16:
5473 case R_PPC64_GOT_TLSLD16_LO:
5474 case R_PPC64_GOT_TLSLD16_HI:
5475 case R_PPC64_GOT_TLSLD16_HA:
5476 tls_type = TLS_TLS | TLS_LD;
5479 case R_PPC64_GOT_TLSGD16:
5480 case R_PPC64_GOT_TLSGD16_LO:
5481 case R_PPC64_GOT_TLSGD16_HI:
5482 case R_PPC64_GOT_TLSGD16_HA:
5483 tls_type = TLS_TLS | TLS_GD;
5486 case R_PPC64_GOT_TPREL16_DS:
5487 case R_PPC64_GOT_TPREL16_LO_DS:
5488 case R_PPC64_GOT_TPREL16_HI:
5489 case R_PPC64_GOT_TPREL16_HA:
5490 if (bfd_link_pic (info))
5491 info->flags |= DF_STATIC_TLS;
5492 tls_type = TLS_TLS | TLS_TPREL;
5495 case R_PPC64_GOT_DTPREL16_DS:
5496 case R_PPC64_GOT_DTPREL16_LO_DS:
5497 case R_PPC64_GOT_DTPREL16_HI:
5498 case R_PPC64_GOT_DTPREL16_HA:
5499 tls_type = TLS_TLS | TLS_DTPREL;
5501 sec->has_tls_reloc = 1;
5505 case R_PPC64_GOT16_DS:
5506 case R_PPC64_GOT16_HA:
5507 case R_PPC64_GOT16_HI:
5508 case R_PPC64_GOT16_LO:
5509 case R_PPC64_GOT16_LO_DS:
5510 /* This symbol requires a global offset table entry. */
5511 sec->has_toc_reloc = 1;
5512 if (r_type == R_PPC64_GOT_TLSLD16
5513 || r_type == R_PPC64_GOT_TLSGD16
5514 || r_type == R_PPC64_GOT_TPREL16_DS
5515 || r_type == R_PPC64_GOT_DTPREL16_DS
5516 || r_type == R_PPC64_GOT16
5517 || r_type == R_PPC64_GOT16_DS)
5519 htab->do_multi_toc = 1;
5520 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5523 if (ppc64_elf_tdata (abfd)->got == NULL
5524 && !create_got_section (abfd, info))
5529 struct ppc_link_hash_entry *eh;
5530 struct got_entry *ent;
5532 eh = (struct ppc_link_hash_entry *) h;
5533 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5534 if (ent->addend == rel->r_addend
5535 && ent->owner == abfd
5536 && ent->tls_type == tls_type)
5540 bfd_size_type amt = sizeof (*ent);
5541 ent = bfd_alloc (abfd, amt);
5544 ent->next = eh->elf.got.glist;
5545 ent->addend = rel->r_addend;
5547 ent->tls_type = tls_type;
5548 ent->is_indirect = FALSE;
5549 ent->got.refcount = 0;
5550 eh->elf.got.glist = ent;
5552 ent->got.refcount += 1;
5553 eh->tls_mask |= tls_type;
5556 /* This is a global offset table entry for a local symbol. */
5557 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5558 rel->r_addend, tls_type))
5561 /* We may also need a plt entry if the symbol turns out to be
5563 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5565 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5570 case R_PPC64_PLT16_HA:
5571 case R_PPC64_PLT16_HI:
5572 case R_PPC64_PLT16_LO:
5575 /* This symbol requires a procedure linkage table entry. */
5580 if (h->root.root.string[0] == '.'
5581 && h->root.root.string[1] != '\0')
5582 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5583 plt_list = &h->plt.plist;
5585 if (plt_list == NULL)
5587 /* It does not make sense to have a procedure linkage
5588 table entry for a non-ifunc local symbol. */
5589 info->callbacks->einfo
5590 /* xgettext:c-format */
5591 (_("%H: %s reloc against local symbol\n"),
5592 abfd, sec, rel->r_offset,
5593 ppc64_elf_howto_table[r_type]->name);
5594 bfd_set_error (bfd_error_bad_value);
5597 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5601 /* The following relocations don't need to propagate the
5602 relocation if linking a shared object since they are
5603 section relative. */
5604 case R_PPC64_SECTOFF:
5605 case R_PPC64_SECTOFF_LO:
5606 case R_PPC64_SECTOFF_HI:
5607 case R_PPC64_SECTOFF_HA:
5608 case R_PPC64_SECTOFF_DS:
5609 case R_PPC64_SECTOFF_LO_DS:
5610 case R_PPC64_DTPREL16:
5611 case R_PPC64_DTPREL16_LO:
5612 case R_PPC64_DTPREL16_HI:
5613 case R_PPC64_DTPREL16_HA:
5614 case R_PPC64_DTPREL16_DS:
5615 case R_PPC64_DTPREL16_LO_DS:
5616 case R_PPC64_DTPREL16_HIGH:
5617 case R_PPC64_DTPREL16_HIGHA:
5618 case R_PPC64_DTPREL16_HIGHER:
5619 case R_PPC64_DTPREL16_HIGHERA:
5620 case R_PPC64_DTPREL16_HIGHEST:
5621 case R_PPC64_DTPREL16_HIGHESTA:
5626 case R_PPC64_REL16_LO:
5627 case R_PPC64_REL16_HI:
5628 case R_PPC64_REL16_HA:
5629 case R_PPC64_REL16DX_HA:
5632 /* Not supported as a dynamic relocation. */
5633 case R_PPC64_ADDR64_LOCAL:
5634 if (bfd_link_pic (info))
5636 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5638 /* xgettext:c-format */
5639 info->callbacks->einfo (_("%H: %s reloc unsupported "
5640 "in shared libraries and PIEs.\n"),
5641 abfd, sec, rel->r_offset,
5642 ppc64_elf_howto_table[r_type]->name);
5643 bfd_set_error (bfd_error_bad_value);
5649 case R_PPC64_TOC16_DS:
5650 htab->do_multi_toc = 1;
5651 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5653 case R_PPC64_TOC16_LO:
5654 case R_PPC64_TOC16_HI:
5655 case R_PPC64_TOC16_HA:
5656 case R_PPC64_TOC16_LO_DS:
5657 sec->has_toc_reloc = 1;
5664 /* This relocation describes the C++ object vtable hierarchy.
5665 Reconstruct it for later use during GC. */
5666 case R_PPC64_GNU_VTINHERIT:
5667 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5671 /* This relocation describes which C++ vtable entries are actually
5672 used. Record for later use during GC. */
5673 case R_PPC64_GNU_VTENTRY:
5674 BFD_ASSERT (h != NULL);
5676 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5681 case R_PPC64_REL14_BRTAKEN:
5682 case R_PPC64_REL14_BRNTAKEN:
5684 asection *dest = NULL;
5686 /* Heuristic: If jumping outside our section, chances are
5687 we are going to need a stub. */
5690 /* If the sym is weak it may be overridden later, so
5691 don't assume we know where a weak sym lives. */
5692 if (h->root.type == bfd_link_hash_defined)
5693 dest = h->root.u.def.section;
5697 Elf_Internal_Sym *isym;
5699 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5704 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5708 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5717 if (h->root.root.string[0] == '.'
5718 && h->root.root.string[1] != '\0')
5719 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5721 if (h == tga || h == dottga)
5723 sec->has_tls_reloc = 1;
5725 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5726 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5727 /* We have a new-style __tls_get_addr call with
5731 /* Mark this section as having an old-style call. */
5732 sec->has_tls_get_addr_call = 1;
5734 plt_list = &h->plt.plist;
5737 /* We may need a .plt entry if the function this reloc
5738 refers to is in a shared lib. */
5740 && !update_plt_info (abfd, plt_list, rel->r_addend))
5744 case R_PPC64_ADDR14:
5745 case R_PPC64_ADDR14_BRNTAKEN:
5746 case R_PPC64_ADDR14_BRTAKEN:
5747 case R_PPC64_ADDR24:
5750 case R_PPC64_TPREL64:
5751 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5752 if (bfd_link_pic (info))
5753 info->flags |= DF_STATIC_TLS;
5756 case R_PPC64_DTPMOD64:
5757 if (rel + 1 < rel_end
5758 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5759 && rel[1].r_offset == rel->r_offset + 8)
5760 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5762 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5765 case R_PPC64_DTPREL64:
5766 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5768 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5769 && rel[-1].r_offset == rel->r_offset - 8)
5770 /* This is the second reloc of a dtpmod, dtprel pair.
5771 Don't mark with TLS_DTPREL. */
5775 sec->has_tls_reloc = 1;
5778 struct ppc_link_hash_entry *eh;
5779 eh = (struct ppc_link_hash_entry *) h;
5780 eh->tls_mask |= tls_type;
5783 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5784 rel->r_addend, tls_type))
5787 ppc64_sec = ppc64_elf_section_data (sec);
5788 if (ppc64_sec->sec_type != sec_toc)
5792 /* One extra to simplify get_tls_mask. */
5793 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5794 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5795 if (ppc64_sec->u.toc.symndx == NULL)
5797 amt = sec->size * sizeof (bfd_vma) / 8;
5798 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5799 if (ppc64_sec->u.toc.add == NULL)
5801 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5802 ppc64_sec->sec_type = sec_toc;
5804 BFD_ASSERT (rel->r_offset % 8 == 0);
5805 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5806 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5808 /* Mark the second slot of a GD or LD entry.
5809 -1 to indicate GD and -2 to indicate LD. */
5810 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5811 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5812 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5813 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5816 case R_PPC64_TPREL16:
5817 case R_PPC64_TPREL16_LO:
5818 case R_PPC64_TPREL16_HI:
5819 case R_PPC64_TPREL16_HA:
5820 case R_PPC64_TPREL16_DS:
5821 case R_PPC64_TPREL16_LO_DS:
5822 case R_PPC64_TPREL16_HIGH:
5823 case R_PPC64_TPREL16_HIGHA:
5824 case R_PPC64_TPREL16_HIGHER:
5825 case R_PPC64_TPREL16_HIGHERA:
5826 case R_PPC64_TPREL16_HIGHEST:
5827 case R_PPC64_TPREL16_HIGHESTA:
5828 if (bfd_link_pic (info))
5830 info->flags |= DF_STATIC_TLS;
5835 case R_PPC64_ADDR64:
5836 if (opd_sym_map != NULL
5837 && rel + 1 < rel_end
5838 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5841 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5845 Elf_Internal_Sym *isym;
5847 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5852 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5853 if (s != NULL && s != sec)
5854 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5859 case R_PPC64_ADDR16:
5860 case R_PPC64_ADDR16_DS:
5861 case R_PPC64_ADDR16_HA:
5862 case R_PPC64_ADDR16_HI:
5863 case R_PPC64_ADDR16_HIGH:
5864 case R_PPC64_ADDR16_HIGHA:
5865 case R_PPC64_ADDR16_HIGHER:
5866 case R_PPC64_ADDR16_HIGHERA:
5867 case R_PPC64_ADDR16_HIGHEST:
5868 case R_PPC64_ADDR16_HIGHESTA:
5869 case R_PPC64_ADDR16_LO:
5870 case R_PPC64_ADDR16_LO_DS:
5871 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5872 && rel->r_addend == 0)
5874 /* We may need a .plt entry if this reloc refers to a
5875 function in a shared lib. */
5876 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5878 h->pointer_equality_needed = 1;
5885 case R_PPC64_ADDR32:
5886 case R_PPC64_UADDR16:
5887 case R_PPC64_UADDR32:
5888 case R_PPC64_UADDR64:
5890 if (h != NULL && !bfd_link_pic (info))
5891 /* We may need a copy reloc. */
5894 /* Don't propagate .opd relocs. */
5895 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5898 /* If we are creating a shared library, and this is a reloc
5899 against a global symbol, or a non PC relative reloc
5900 against a local symbol, then we need to copy the reloc
5901 into the shared library. However, if we are linking with
5902 -Bsymbolic, we do not need to copy a reloc against a
5903 global symbol which is defined in an object we are
5904 including in the link (i.e., DEF_REGULAR is set). At
5905 this point we have not seen all the input files, so it is
5906 possible that DEF_REGULAR is not set now but will be set
5907 later (it is never cleared). In case of a weak definition,
5908 DEF_REGULAR may be cleared later by a strong definition in
5909 a shared library. We account for that possibility below by
5910 storing information in the dyn_relocs field of the hash
5911 table entry. A similar situation occurs when creating
5912 shared libraries and symbol visibility changes render the
5915 If on the other hand, we are creating an executable, we
5916 may need to keep relocations for symbols satisfied by a
5917 dynamic library if we manage to avoid copy relocs for the
5920 if ((bfd_link_pic (info)
5921 && (must_be_dyn_reloc (info, r_type)
5923 && (!SYMBOLIC_BIND (info, h)
5924 || h->root.type == bfd_link_hash_defweak
5925 || !h->def_regular))))
5926 || (ELIMINATE_COPY_RELOCS
5927 && !bfd_link_pic (info)
5929 && (h->root.type == bfd_link_hash_defweak
5930 || !h->def_regular))
5931 || (!bfd_link_pic (info)
5934 /* We must copy these reloc types into the output file.
5935 Create a reloc section in dynobj and make room for
5939 sreloc = _bfd_elf_make_dynamic_reloc_section
5940 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5946 /* If this is a global symbol, we count the number of
5947 relocations we need for this symbol. */
5950 struct elf_dyn_relocs *p;
5951 struct elf_dyn_relocs **head;
5953 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5955 if (p == NULL || p->sec != sec)
5957 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5967 if (!must_be_dyn_reloc (info, r_type))
5972 /* Track dynamic relocs needed for local syms too.
5973 We really need local syms available to do this
5975 struct ppc_dyn_relocs *p;
5976 struct ppc_dyn_relocs **head;
5977 bfd_boolean is_ifunc;
5980 Elf_Internal_Sym *isym;
5982 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5987 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5991 vpp = &elf_section_data (s)->local_dynrel;
5992 head = (struct ppc_dyn_relocs **) vpp;
5993 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5995 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5997 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5999 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6005 p->ifunc = is_ifunc;
6021 /* Merge backend specific data from an object file to the output
6022 object file when linking. */
6025 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6027 bfd *obfd = info->output_bfd;
6028 unsigned long iflags, oflags;
6030 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6033 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6036 if (!_bfd_generic_verify_endian_match (ibfd, info))
6039 iflags = elf_elfheader (ibfd)->e_flags;
6040 oflags = elf_elfheader (obfd)->e_flags;
6042 if (iflags & ~EF_PPC64_ABI)
6045 /* xgettext:c-format */
6046 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6047 bfd_set_error (bfd_error_bad_value);
6050 else if (iflags != oflags && iflags != 0)
6053 /* xgettext:c-format */
6054 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6055 ibfd, iflags, oflags);
6056 bfd_set_error (bfd_error_bad_value);
6060 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6062 /* Merge Tag_compatibility attributes and any common GNU ones. */
6063 _bfd_elf_merge_object_attributes (ibfd, info);
6069 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6071 /* Print normal ELF private data. */
6072 _bfd_elf_print_private_bfd_data (abfd, ptr);
6074 if (elf_elfheader (abfd)->e_flags != 0)
6078 fprintf (file, _("private flags = 0x%lx:"),
6079 elf_elfheader (abfd)->e_flags);
6081 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6082 fprintf (file, _(" [abiv%ld]"),
6083 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6090 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6091 of the code entry point, and its section, which must be in the same
6092 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6095 opd_entry_value (asection *opd_sec,
6097 asection **code_sec,
6099 bfd_boolean in_code_sec)
6101 bfd *opd_bfd = opd_sec->owner;
6102 Elf_Internal_Rela *relocs;
6103 Elf_Internal_Rela *lo, *hi, *look;
6106 /* No relocs implies we are linking a --just-symbols object, or looking
6107 at a final linked executable with addr2line or somesuch. */
6108 if (opd_sec->reloc_count == 0)
6110 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6112 if (contents == NULL)
6114 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6115 return (bfd_vma) -1;
6116 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6119 /* PR 17512: file: 64b9dfbb. */
6120 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6121 return (bfd_vma) -1;
6123 val = bfd_get_64 (opd_bfd, contents + offset);
6124 if (code_sec != NULL)
6126 asection *sec, *likely = NULL;
6132 && val < sec->vma + sec->size)
6138 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6140 && (sec->flags & SEC_LOAD) != 0
6141 && (sec->flags & SEC_ALLOC) != 0)
6146 if (code_off != NULL)
6147 *code_off = val - likely->vma;
6153 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6155 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6157 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6158 /* PR 17512: file: df8e1fd6. */
6160 return (bfd_vma) -1;
6162 /* Go find the opd reloc at the sym address. */
6164 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6168 look = lo + (hi - lo) / 2;
6169 if (look->r_offset < offset)
6171 else if (look->r_offset > offset)
6175 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6177 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6178 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6180 unsigned long symndx = ELF64_R_SYM (look->r_info);
6181 asection *sec = NULL;
6183 if (symndx >= symtab_hdr->sh_info
6184 && elf_sym_hashes (opd_bfd) != NULL)
6186 struct elf_link_hash_entry **sym_hashes;
6187 struct elf_link_hash_entry *rh;
6189 sym_hashes = elf_sym_hashes (opd_bfd);
6190 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6193 rh = elf_follow_link (rh);
6194 if (rh->root.type != bfd_link_hash_defined
6195 && rh->root.type != bfd_link_hash_defweak)
6197 if (rh->root.u.def.section->owner == opd_bfd)
6199 val = rh->root.u.def.value;
6200 sec = rh->root.u.def.section;
6207 Elf_Internal_Sym *sym;
6209 if (symndx < symtab_hdr->sh_info)
6211 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6214 size_t symcnt = symtab_hdr->sh_info;
6215 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6220 symtab_hdr->contents = (bfd_byte *) sym;
6226 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6232 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6235 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6236 val = sym->st_value;
6239 val += look->r_addend;
6240 if (code_off != NULL)
6242 if (code_sec != NULL)
6244 if (in_code_sec && *code_sec != sec)
6249 if (sec->output_section != NULL)
6250 val += sec->output_section->vma + sec->output_offset;
6259 /* If the ELF symbol SYM might be a function in SEC, return the
6260 function size and set *CODE_OFF to the function's entry point,
6261 otherwise return zero. */
6263 static bfd_size_type
6264 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6269 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6270 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6274 if (!(sym->flags & BSF_SYNTHETIC))
6275 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6277 if (strcmp (sym->section->name, ".opd") == 0)
6279 struct _opd_sec_data *opd = get_opd_info (sym->section);
6280 bfd_vma symval = sym->value;
6283 && opd->adjust != NULL
6284 && elf_section_data (sym->section)->relocs != NULL)
6286 /* opd_entry_value will use cached relocs that have been
6287 adjusted, but with raw symbols. That means both local
6288 and global symbols need adjusting. */
6289 long adjust = opd->adjust[OPD_NDX (symval)];
6295 if (opd_entry_value (sym->section, symval,
6296 &sec, code_off, TRUE) == (bfd_vma) -1)
6298 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6299 symbol. This size has nothing to do with the code size of the
6300 function, which is what we're supposed to return, but the
6301 code size isn't available without looking up the dot-sym.
6302 However, doing that would be a waste of time particularly
6303 since elf_find_function will look at the dot-sym anyway.
6304 Now, elf_find_function will keep the largest size of any
6305 function sym found at the code address of interest, so return
6306 1 here to avoid it incorrectly caching a larger function size
6307 for a small function. This does mean we return the wrong
6308 size for a new-ABI function of size 24, but all that does is
6309 disable caching for such functions. */
6315 if (sym->section != sec)
6317 *code_off = sym->value;
6324 /* Return true if symbol is a strong function defined in an ELFv2
6325 object with st_other localentry bits of zero, ie. its local entry
6326 point coincides with its global entry point. */
6329 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6332 && h->type == STT_FUNC
6333 && h->root.type == bfd_link_hash_defined
6334 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6335 && is_ppc64_elf (h->root.u.def.section->owner)
6336 && abiversion (h->root.u.def.section->owner) >= 2);
6339 /* Return true if symbol is defined in a regular object file. */
6342 is_static_defined (struct elf_link_hash_entry *h)
6344 return ((h->root.type == bfd_link_hash_defined
6345 || h->root.type == bfd_link_hash_defweak)
6346 && h->root.u.def.section != NULL
6347 && h->root.u.def.section->output_section != NULL);
6350 /* If FDH is a function descriptor symbol, return the associated code
6351 entry symbol if it is defined. Return NULL otherwise. */
6353 static struct ppc_link_hash_entry *
6354 defined_code_entry (struct ppc_link_hash_entry *fdh)
6356 if (fdh->is_func_descriptor)
6358 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6359 if (fh->elf.root.type == bfd_link_hash_defined
6360 || fh->elf.root.type == bfd_link_hash_defweak)
6366 /* If FH is a function code entry symbol, return the associated
6367 function descriptor symbol if it is defined. Return NULL otherwise. */
6369 static struct ppc_link_hash_entry *
6370 defined_func_desc (struct ppc_link_hash_entry *fh)
6373 && fh->oh->is_func_descriptor)
6375 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6376 if (fdh->elf.root.type == bfd_link_hash_defined
6377 || fdh->elf.root.type == bfd_link_hash_defweak)
6383 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6385 /* Garbage collect sections, after first dealing with dot-symbols. */
6388 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6390 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6392 if (htab != NULL && htab->need_func_desc_adj)
6394 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6395 htab->need_func_desc_adj = 0;
6397 return bfd_elf_gc_sections (abfd, info);
6400 /* Mark all our entry sym sections, both opd and code section. */
6403 ppc64_elf_gc_keep (struct bfd_link_info *info)
6405 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6406 struct bfd_sym_chain *sym;
6411 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6413 struct ppc_link_hash_entry *eh, *fh;
6416 eh = (struct ppc_link_hash_entry *)
6417 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6420 if (eh->elf.root.type != bfd_link_hash_defined
6421 && eh->elf.root.type != bfd_link_hash_defweak)
6424 fh = defined_code_entry (eh);
6427 sec = fh->elf.root.u.def.section;
6428 sec->flags |= SEC_KEEP;
6430 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6431 && opd_entry_value (eh->elf.root.u.def.section,
6432 eh->elf.root.u.def.value,
6433 &sec, NULL, FALSE) != (bfd_vma) -1)
6434 sec->flags |= SEC_KEEP;
6436 sec = eh->elf.root.u.def.section;
6437 sec->flags |= SEC_KEEP;
6441 /* Mark sections containing dynamically referenced symbols. When
6442 building shared libraries, we must assume that any visible symbol is
6446 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6448 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6449 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6450 struct ppc_link_hash_entry *fdh;
6451 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6453 /* Dynamic linking info is on the func descriptor sym. */
6454 fdh = defined_func_desc (eh);
6458 if ((eh->elf.root.type == bfd_link_hash_defined
6459 || eh->elf.root.type == bfd_link_hash_defweak)
6460 && (eh->elf.ref_dynamic
6461 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6462 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6463 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6464 && (!bfd_link_executable (info)
6465 || info->gc_keep_exported
6466 || info->export_dynamic
6469 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6470 && (eh->elf.versioned >= versioned
6471 || !bfd_hide_sym_by_version (info->version_info,
6472 eh->elf.root.root.string)))))
6475 struct ppc_link_hash_entry *fh;
6477 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6479 /* Function descriptor syms cause the associated
6480 function code sym section to be marked. */
6481 fh = defined_code_entry (eh);
6484 code_sec = fh->elf.root.u.def.section;
6485 code_sec->flags |= SEC_KEEP;
6487 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6488 && opd_entry_value (eh->elf.root.u.def.section,
6489 eh->elf.root.u.def.value,
6490 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6491 code_sec->flags |= SEC_KEEP;
6497 /* Return the section that should be marked against GC for a given
6501 ppc64_elf_gc_mark_hook (asection *sec,
6502 struct bfd_link_info *info,
6503 Elf_Internal_Rela *rel,
6504 struct elf_link_hash_entry *h,
6505 Elf_Internal_Sym *sym)
6509 /* Syms return NULL if we're marking .opd, so we avoid marking all
6510 function sections, as all functions are referenced in .opd. */
6512 if (get_opd_info (sec) != NULL)
6517 enum elf_ppc64_reloc_type r_type;
6518 struct ppc_link_hash_entry *eh, *fh, *fdh;
6520 r_type = ELF64_R_TYPE (rel->r_info);
6523 case R_PPC64_GNU_VTINHERIT:
6524 case R_PPC64_GNU_VTENTRY:
6528 switch (h->root.type)
6530 case bfd_link_hash_defined:
6531 case bfd_link_hash_defweak:
6532 eh = (struct ppc_link_hash_entry *) h;
6533 fdh = defined_func_desc (eh);
6536 /* -mcall-aixdesc code references the dot-symbol on
6537 a call reloc. Mark the function descriptor too
6538 against garbage collection. */
6540 if (fdh->elf.u.weakdef != NULL)
6541 fdh->elf.u.weakdef->mark = 1;
6545 /* Function descriptor syms cause the associated
6546 function code sym section to be marked. */
6547 fh = defined_code_entry (eh);
6550 /* They also mark their opd section. */
6551 eh->elf.root.u.def.section->gc_mark = 1;
6553 rsec = fh->elf.root.u.def.section;
6555 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6556 && opd_entry_value (eh->elf.root.u.def.section,
6557 eh->elf.root.u.def.value,
6558 &rsec, NULL, FALSE) != (bfd_vma) -1)
6559 eh->elf.root.u.def.section->gc_mark = 1;
6561 rsec = h->root.u.def.section;
6564 case bfd_link_hash_common:
6565 rsec = h->root.u.c.p->section;
6569 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6575 struct _opd_sec_data *opd;
6577 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6578 opd = get_opd_info (rsec);
6579 if (opd != NULL && opd->func_sec != NULL)
6583 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6590 /* Update the .got, .plt. and dynamic reloc reference counts for the
6591 section being removed. */
6594 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6595 asection *sec, const Elf_Internal_Rela *relocs)
6597 struct ppc_link_hash_table *htab;
6598 Elf_Internal_Shdr *symtab_hdr;
6599 struct elf_link_hash_entry **sym_hashes;
6600 struct got_entry **local_got_ents;
6601 const Elf_Internal_Rela *rel, *relend;
6603 if (bfd_link_relocatable (info))
6606 if ((sec->flags & SEC_ALLOC) == 0)
6609 elf_section_data (sec)->local_dynrel = NULL;
6611 htab = ppc_hash_table (info);
6615 symtab_hdr = &elf_symtab_hdr (abfd);
6616 sym_hashes = elf_sym_hashes (abfd);
6617 local_got_ents = elf_local_got_ents (abfd);
6619 relend = relocs + sec->reloc_count;
6620 for (rel = relocs; rel < relend; rel++)
6622 unsigned long r_symndx;
6623 enum elf_ppc64_reloc_type r_type;
6624 struct elf_link_hash_entry *h = NULL;
6625 struct plt_entry **plt_list = NULL;
6626 unsigned char tls_type = 0;
6628 r_symndx = ELF64_R_SYM (rel->r_info);
6629 r_type = ELF64_R_TYPE (rel->r_info);
6630 if (r_symndx >= symtab_hdr->sh_info)
6632 struct ppc_link_hash_entry *eh;
6633 struct elf_dyn_relocs **pp;
6634 struct elf_dyn_relocs *p;
6636 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6637 h = elf_follow_link (h);
6638 eh = (struct ppc_link_hash_entry *) h;
6640 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6643 /* Everything must go for SEC. */
6651 case R_PPC64_GOT_TLSLD16:
6652 case R_PPC64_GOT_TLSLD16_LO:
6653 case R_PPC64_GOT_TLSLD16_HI:
6654 case R_PPC64_GOT_TLSLD16_HA:
6655 tls_type = TLS_TLS | TLS_LD;
6658 case R_PPC64_GOT_TLSGD16:
6659 case R_PPC64_GOT_TLSGD16_LO:
6660 case R_PPC64_GOT_TLSGD16_HI:
6661 case R_PPC64_GOT_TLSGD16_HA:
6662 tls_type = TLS_TLS | TLS_GD;
6665 case R_PPC64_GOT_TPREL16_DS:
6666 case R_PPC64_GOT_TPREL16_LO_DS:
6667 case R_PPC64_GOT_TPREL16_HI:
6668 case R_PPC64_GOT_TPREL16_HA:
6669 tls_type = TLS_TLS | TLS_TPREL;
6672 case R_PPC64_GOT_DTPREL16_DS:
6673 case R_PPC64_GOT_DTPREL16_LO_DS:
6674 case R_PPC64_GOT_DTPREL16_HI:
6675 case R_PPC64_GOT_DTPREL16_HA:
6676 tls_type = TLS_TLS | TLS_DTPREL;
6680 case R_PPC64_GOT16_DS:
6681 case R_PPC64_GOT16_HA:
6682 case R_PPC64_GOT16_HI:
6683 case R_PPC64_GOT16_LO:
6684 case R_PPC64_GOT16_LO_DS:
6687 struct got_entry *ent;
6692 ent = local_got_ents[r_symndx];
6694 for (; ent != NULL; ent = ent->next)
6695 if (ent->addend == rel->r_addend
6696 && ent->owner == abfd
6697 && ent->tls_type == tls_type)
6701 if (ent->got.refcount > 0)
6702 ent->got.refcount -= 1;
6704 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
6705 plt_list = &h->plt.plist;
6708 case R_PPC64_PLT16_HA:
6709 case R_PPC64_PLT16_HI:
6710 case R_PPC64_PLT16_LO:
6714 case R_PPC64_REL14_BRNTAKEN:
6715 case R_PPC64_REL14_BRTAKEN:
6718 plt_list = &h->plt.plist;
6719 else if (local_got_ents != NULL)
6721 struct plt_entry **local_plt = (struct plt_entry **)
6722 (local_got_ents + symtab_hdr->sh_info);
6723 unsigned char *local_got_tls_masks = (unsigned char *)
6724 (local_plt + symtab_hdr->sh_info);
6725 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6726 plt_list = local_plt + r_symndx;
6730 case R_PPC64_ADDR64:
6731 case R_PPC64_ADDR16:
6732 case R_PPC64_ADDR16_DS:
6733 case R_PPC64_ADDR16_HA:
6734 case R_PPC64_ADDR16_HI:
6735 case R_PPC64_ADDR16_HIGH:
6736 case R_PPC64_ADDR16_HIGHA:
6737 case R_PPC64_ADDR16_HIGHER:
6738 case R_PPC64_ADDR16_HIGHERA:
6739 case R_PPC64_ADDR16_HIGHEST:
6740 case R_PPC64_ADDR16_HIGHESTA:
6741 case R_PPC64_ADDR16_LO:
6742 case R_PPC64_ADDR16_LO_DS:
6743 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
6744 && rel->r_addend == 0)
6745 plt_list = &h->plt.plist;
6751 if (plt_list != NULL)
6753 struct plt_entry *ent;
6755 for (ent = *plt_list; ent != NULL; ent = ent->next)
6756 if (ent->addend == rel->r_addend)
6758 if (ent != NULL && ent->plt.refcount > 0)
6759 ent->plt.refcount -= 1;
6765 /* The maximum size of .sfpr. */
6766 #define SFPR_MAX (218*4)
6768 struct sfpr_def_parms
6770 const char name[12];
6771 unsigned char lo, hi;
6772 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6773 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6776 /* Auto-generate _save*, _rest* functions in .sfpr.
6777 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6781 sfpr_define (struct bfd_link_info *info,
6782 const struct sfpr_def_parms *parm,
6785 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6787 size_t len = strlen (parm->name);
6788 bfd_boolean writing = FALSE;
6794 memcpy (sym, parm->name, len);
6797 for (i = parm->lo; i <= parm->hi; i++)
6799 struct ppc_link_hash_entry *h;
6801 sym[len + 0] = i / 10 + '0';
6802 sym[len + 1] = i % 10 + '0';
6803 h = (struct ppc_link_hash_entry *)
6804 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6805 if (stub_sec != NULL)
6808 && h->elf.root.type == bfd_link_hash_defined
6809 && h->elf.root.u.def.section == htab->sfpr)
6811 struct elf_link_hash_entry *s;
6813 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6814 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6817 if (s->root.type == bfd_link_hash_new
6818 || (s->root.type = bfd_link_hash_defined
6819 && s->root.u.def.section == stub_sec))
6821 s->root.type = bfd_link_hash_defined;
6822 s->root.u.def.section = stub_sec;
6823 s->root.u.def.value = (stub_sec->size
6824 + h->elf.root.u.def.value);
6827 s->ref_regular_nonweak = 1;
6828 s->forced_local = 1;
6830 s->root.linker_def = 1;
6838 if (!h->elf.def_regular)
6840 h->elf.root.type = bfd_link_hash_defined;
6841 h->elf.root.u.def.section = htab->sfpr;
6842 h->elf.root.u.def.value = htab->sfpr->size;
6843 h->elf.type = STT_FUNC;
6844 h->elf.def_regular = 1;
6846 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6848 if (htab->sfpr->contents == NULL)
6850 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6851 if (htab->sfpr->contents == NULL)
6858 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6860 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6862 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6863 htab->sfpr->size = p - htab->sfpr->contents;
6871 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6873 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6878 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6880 p = savegpr0 (abfd, p, r);
6881 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6883 bfd_put_32 (abfd, BLR, p);
6888 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6890 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6895 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6897 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6899 p = restgpr0 (abfd, p, r);
6900 bfd_put_32 (abfd, MTLR_R0, p);
6904 p = restgpr0 (abfd, p, 30);
6905 p = restgpr0 (abfd, p, 31);
6907 bfd_put_32 (abfd, BLR, p);
6912 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6914 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6919 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6921 p = savegpr1 (abfd, p, r);
6922 bfd_put_32 (abfd, BLR, p);
6927 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6929 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6934 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6936 p = restgpr1 (abfd, p, r);
6937 bfd_put_32 (abfd, BLR, p);
6942 savefpr (bfd *abfd, bfd_byte *p, int r)
6944 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6949 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6951 p = savefpr (abfd, p, r);
6952 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6954 bfd_put_32 (abfd, BLR, p);
6959 restfpr (bfd *abfd, bfd_byte *p, int r)
6961 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6966 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6968 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6970 p = restfpr (abfd, p, r);
6971 bfd_put_32 (abfd, MTLR_R0, p);
6975 p = restfpr (abfd, p, 30);
6976 p = restfpr (abfd, p, 31);
6978 bfd_put_32 (abfd, BLR, p);
6983 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6985 p = savefpr (abfd, p, r);
6986 bfd_put_32 (abfd, BLR, p);
6991 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6993 p = restfpr (abfd, p, r);
6994 bfd_put_32 (abfd, BLR, p);
6999 savevr (bfd *abfd, bfd_byte *p, int r)
7001 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7003 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
7008 savevr_tail (bfd *abfd, bfd_byte *p, int r)
7010 p = savevr (abfd, p, r);
7011 bfd_put_32 (abfd, BLR, p);
7016 restvr (bfd *abfd, bfd_byte *p, int r)
7018 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7020 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
7025 restvr_tail (bfd *abfd, bfd_byte *p, int r)
7027 p = restvr (abfd, p, r);
7028 bfd_put_32 (abfd, BLR, p);
7032 /* Called via elf_link_hash_traverse to transfer dynamic linking
7033 information on function code symbol entries to their corresponding
7034 function descriptor symbol entries. */
7037 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
7039 struct bfd_link_info *info;
7040 struct ppc_link_hash_table *htab;
7041 struct ppc_link_hash_entry *fh;
7042 struct ppc_link_hash_entry *fdh;
7043 bfd_boolean force_local;
7045 fh = (struct ppc_link_hash_entry *) h;
7046 if (fh->elf.root.type == bfd_link_hash_indirect)
7052 if (fh->elf.root.root.string[0] != '.'
7053 || fh->elf.root.root.string[1] == '\0')
7057 htab = ppc_hash_table (info);
7061 /* Find the corresponding function descriptor symbol. */
7062 fdh = lookup_fdh (fh, htab);
7064 /* Resolve undefined references to dot-symbols as the value
7065 in the function descriptor, if we have one in a regular object.
7066 This is to satisfy cases like ".quad .foo". Calls to functions
7067 in dynamic objects are handled elsewhere. */
7068 if ((fh->elf.root.type == bfd_link_hash_undefined
7069 || fh->elf.root.type == bfd_link_hash_undefweak)
7070 && (fdh->elf.root.type == bfd_link_hash_defined
7071 || fdh->elf.root.type == bfd_link_hash_defweak)
7072 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7073 && opd_entry_value (fdh->elf.root.u.def.section,
7074 fdh->elf.root.u.def.value,
7075 &fh->elf.root.u.def.section,
7076 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7078 fh->elf.root.type = fdh->elf.root.type;
7079 fh->elf.forced_local = 1;
7080 fh->elf.def_regular = fdh->elf.def_regular;
7081 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7084 if (!fh->elf.dynamic)
7086 struct plt_entry *ent;
7088 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7089 if (ent->plt.refcount > 0)
7095 /* Create a descriptor as undefined if necessary. */
7097 && !bfd_link_executable (info)
7098 && (fh->elf.root.type == bfd_link_hash_undefined
7099 || fh->elf.root.type == bfd_link_hash_undefweak))
7101 fdh = make_fdh (info, fh);
7106 /* We can't support overriding of symbols on a fake descriptor. */
7109 && (fh->elf.root.type == bfd_link_hash_defined
7110 || fh->elf.root.type == bfd_link_hash_defweak))
7111 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7113 /* Transfer dynamic linking information to the function descriptor. */
7116 fdh->elf.ref_regular |= fh->elf.ref_regular;
7117 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7118 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7119 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7120 fdh->elf.dynamic |= fh->elf.dynamic;
7121 fdh->elf.needs_plt |= (fh->elf.needs_plt
7122 || fh->elf.type == STT_FUNC
7123 || fh->elf.type == STT_GNU_IFUNC);
7124 move_plt_plist (fh, fdh);
7126 if (!fdh->elf.forced_local
7127 && fh->elf.dynindx != -1)
7128 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7132 /* Now that the info is on the function descriptor, clear the
7133 function code sym info. Any function code syms for which we
7134 don't have a definition in a regular file, we force local.
7135 This prevents a shared library from exporting syms that have
7136 been imported from another library. Function code syms that
7137 are really in the library we must leave global to prevent the
7138 linker dragging in a definition from a static library. */
7139 force_local = (!fh->elf.def_regular
7141 || !fdh->elf.def_regular
7142 || fdh->elf.forced_local);
7143 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7148 static const struct sfpr_def_parms save_res_funcs[] =
7150 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7151 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7152 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7153 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7154 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7155 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7156 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7157 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7158 { "._savef", 14, 31, savefpr, savefpr1_tail },
7159 { "._restf", 14, 31, restfpr, restfpr1_tail },
7160 { "_savevr_", 20, 31, savevr, savevr_tail },
7161 { "_restvr_", 20, 31, restvr, restvr_tail }
7164 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7165 this hook to a) provide some gcc support functions, and b) transfer
7166 dynamic linking information gathered so far on function code symbol
7167 entries, to their corresponding function descriptor symbol entries. */
7170 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7171 struct bfd_link_info *info)
7173 struct ppc_link_hash_table *htab;
7175 htab = ppc_hash_table (info);
7179 /* Provide any missing _save* and _rest* functions. */
7180 if (htab->sfpr != NULL)
7184 htab->sfpr->size = 0;
7185 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7186 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7188 if (htab->sfpr->size == 0)
7189 htab->sfpr->flags |= SEC_EXCLUDE;
7192 if (bfd_link_relocatable (info))
7195 if (htab->elf.hgot != NULL)
7197 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7198 /* Make .TOC. defined so as to prevent it being made dynamic.
7199 The wrong value here is fixed later in ppc64_elf_set_toc. */
7200 if (!htab->elf.hgot->def_regular
7201 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7203 htab->elf.hgot->root.type = bfd_link_hash_defined;
7204 htab->elf.hgot->root.u.def.value = 0;
7205 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7206 htab->elf.hgot->def_regular = 1;
7207 htab->elf.hgot->root.linker_def = 1;
7209 htab->elf.hgot->type = STT_OBJECT;
7210 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7214 if (htab->need_func_desc_adj)
7216 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7217 htab->need_func_desc_adj = 0;
7223 /* Return true if we have dynamic relocs against H that apply to
7224 read-only sections. */
7227 readonly_dynrelocs (struct elf_link_hash_entry *h)
7229 struct ppc_link_hash_entry *eh;
7230 struct elf_dyn_relocs *p;
7232 eh = (struct ppc_link_hash_entry *) h;
7233 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7235 asection *s = p->sec->output_section;
7237 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7243 /* Return true if we have dynamic relocs against H or any of its weak
7244 aliases, that apply to read-only sections. */
7247 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7249 struct ppc_link_hash_entry *eh;
7251 eh = (struct ppc_link_hash_entry *) h;
7254 if (readonly_dynrelocs (&eh->elf))
7257 } while (eh != NULL && &eh->elf != h);
7262 /* Return whether EH has pc-relative dynamic relocs. */
7265 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7267 struct elf_dyn_relocs *p;
7269 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7270 if (p->pc_count != 0)
7275 /* Return true if a global entry stub will be created for H. Valid
7276 for ELFv2 before plt entries have been allocated. */
7279 global_entry_stub (struct elf_link_hash_entry *h)
7281 struct plt_entry *pent;
7283 if (!h->pointer_equality_needed
7287 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7288 if (pent->plt.refcount > 0
7289 && pent->addend == 0)
7295 /* Adjust a symbol defined by a dynamic object and referenced by a
7296 regular object. The current definition is in some section of the
7297 dynamic object, but we're not including those sections. We have to
7298 change the definition to something the rest of the link can
7302 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7303 struct elf_link_hash_entry *h)
7305 struct ppc_link_hash_table *htab;
7308 htab = ppc_hash_table (info);
7312 /* Deal with function syms. */
7313 if (h->type == STT_FUNC
7314 || h->type == STT_GNU_IFUNC
7317 /* Clear procedure linkage table information for any symbol that
7318 won't need a .plt entry. */
7319 struct plt_entry *ent;
7320 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7321 if (ent->plt.refcount > 0)
7324 || (h->type != STT_GNU_IFUNC
7325 && (SYMBOL_CALLS_LOCAL (info, h)
7326 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
7327 || ((struct ppc_link_hash_entry *) h)->save_res)
7329 h->plt.plist = NULL;
7331 h->pointer_equality_needed = 0;
7333 else if (abiversion (info->output_bfd) >= 2)
7335 /* Taking a function's address in a read/write section
7336 doesn't require us to define the function symbol in the
7337 executable on a global entry stub. A dynamic reloc can
7338 be used instead. The reason we prefer a few more dynamic
7339 relocs is that calling via a global entry stub costs a
7340 few more instructions, and pointer_equality_needed causes
7341 extra work in ld.so when resolving these symbols. */
7342 if (global_entry_stub (h)
7343 && !alias_readonly_dynrelocs (h))
7345 h->pointer_equality_needed = 0;
7346 /* After adjust_dynamic_symbol, non_got_ref set in
7347 the non-pic case means that dyn_relocs for this
7348 symbol should be discarded. */
7352 /* If making a plt entry, then we don't need copy relocs. */
7357 h->plt.plist = NULL;
7359 /* If this is a weak symbol, and there is a real definition, the
7360 processor independent code will have arranged for us to see the
7361 real definition first, and we can just use the same value. */
7362 if (h->u.weakdef != NULL)
7364 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7365 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7366 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7367 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7368 if (ELIMINATE_COPY_RELOCS)
7369 h->non_got_ref = h->u.weakdef->non_got_ref;
7373 /* If we are creating a shared library, we must presume that the
7374 only references to the symbol are via the global offset table.
7375 For such cases we need not do anything here; the relocations will
7376 be handled correctly by relocate_section. */
7377 if (bfd_link_pic (info))
7380 /* If there are no references to this symbol that do not use the
7381 GOT, we don't need to generate a copy reloc. */
7382 if (!h->non_got_ref)
7385 /* Don't generate a copy reloc for symbols defined in the executable. */
7386 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7388 /* If -z nocopyreloc was given, don't generate them either. */
7389 || info->nocopyreloc
7391 /* If we didn't find any dynamic relocs in read-only sections, then
7392 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7393 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7395 /* Protected variables do not work with .dynbss. The copy in
7396 .dynbss won't be used by the shared library with the protected
7397 definition for the variable. Text relocations are preferable
7398 to an incorrect program. */
7399 || h->protected_def)
7405 if (h->plt.plist != NULL)
7407 /* We should never get here, but unfortunately there are versions
7408 of gcc out there that improperly (for this ABI) put initialized
7409 function pointers, vtable refs and suchlike in read-only
7410 sections. Allow them to proceed, but warn that this might
7411 break at runtime. */
7412 info->callbacks->einfo
7413 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7414 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7415 h->root.root.string);
7418 /* This is a reference to a symbol defined by a dynamic object which
7419 is not a function. */
7421 /* We must allocate the symbol in our .dynbss section, which will
7422 become part of the .bss section of the executable. There will be
7423 an entry for this symbol in the .dynsym section. The dynamic
7424 object will contain position independent code, so all references
7425 from the dynamic object to this symbol will go through the global
7426 offset table. The dynamic linker will use the .dynsym entry to
7427 determine the address it must put in the global offset table, so
7428 both the dynamic object and the regular object will refer to the
7429 same memory location for the variable. */
7431 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7432 to copy the initial value out of the dynamic object and into the
7433 runtime process image. We need to remember the offset into the
7434 .rela.bss section we are going to use. */
7435 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7437 s = htab->elf.sdynrelro;
7438 srel = htab->elf.sreldynrelro;
7442 s = htab->elf.sdynbss;
7443 srel = htab->elf.srelbss;
7445 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7447 srel->size += sizeof (Elf64_External_Rela);
7451 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7454 /* If given a function descriptor symbol, hide both the function code
7455 sym and the descriptor. */
7457 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7458 struct elf_link_hash_entry *h,
7459 bfd_boolean force_local)
7461 struct ppc_link_hash_entry *eh;
7462 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7464 eh = (struct ppc_link_hash_entry *) h;
7465 if (eh->is_func_descriptor)
7467 struct ppc_link_hash_entry *fh = eh->oh;
7472 struct elf_link_hash_table *htab = elf_hash_table (info);
7475 /* We aren't supposed to use alloca in BFD because on
7476 systems which do not have alloca the version in libiberty
7477 calls xmalloc, which might cause the program to crash
7478 when it runs out of memory. This function doesn't have a
7479 return status, so there's no way to gracefully return an
7480 error. So cheat. We know that string[-1] can be safely
7481 accessed; It's either a string in an ELF string table,
7482 or allocated in an objalloc structure. */
7484 p = eh->elf.root.root.string - 1;
7487 fh = (struct ppc_link_hash_entry *)
7488 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7491 /* Unfortunately, if it so happens that the string we were
7492 looking for was allocated immediately before this string,
7493 then we overwrote the string terminator. That's the only
7494 reason the lookup should fail. */
7497 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7498 while (q >= eh->elf.root.root.string && *q == *p)
7500 if (q < eh->elf.root.root.string && *p == '.')
7501 fh = (struct ppc_link_hash_entry *)
7502 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7511 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7516 get_sym_h (struct elf_link_hash_entry **hp,
7517 Elf_Internal_Sym **symp,
7519 unsigned char **tls_maskp,
7520 Elf_Internal_Sym **locsymsp,
7521 unsigned long r_symndx,
7524 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7526 if (r_symndx >= symtab_hdr->sh_info)
7528 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7529 struct elf_link_hash_entry *h;
7531 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7532 h = elf_follow_link (h);
7540 if (symsecp != NULL)
7542 asection *symsec = NULL;
7543 if (h->root.type == bfd_link_hash_defined
7544 || h->root.type == bfd_link_hash_defweak)
7545 symsec = h->root.u.def.section;
7549 if (tls_maskp != NULL)
7551 struct ppc_link_hash_entry *eh;
7553 eh = (struct ppc_link_hash_entry *) h;
7554 *tls_maskp = &eh->tls_mask;
7559 Elf_Internal_Sym *sym;
7560 Elf_Internal_Sym *locsyms = *locsymsp;
7562 if (locsyms == NULL)
7564 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7565 if (locsyms == NULL)
7566 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7567 symtab_hdr->sh_info,
7568 0, NULL, NULL, NULL);
7569 if (locsyms == NULL)
7571 *locsymsp = locsyms;
7573 sym = locsyms + r_symndx;
7581 if (symsecp != NULL)
7582 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7584 if (tls_maskp != NULL)
7586 struct got_entry **lgot_ents;
7587 unsigned char *tls_mask;
7590 lgot_ents = elf_local_got_ents (ibfd);
7591 if (lgot_ents != NULL)
7593 struct plt_entry **local_plt = (struct plt_entry **)
7594 (lgot_ents + symtab_hdr->sh_info);
7595 unsigned char *lgot_masks = (unsigned char *)
7596 (local_plt + symtab_hdr->sh_info);
7597 tls_mask = &lgot_masks[r_symndx];
7599 *tls_maskp = tls_mask;
7605 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7606 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7607 type suitable for optimization, and 1 otherwise. */
7610 get_tls_mask (unsigned char **tls_maskp,
7611 unsigned long *toc_symndx,
7612 bfd_vma *toc_addend,
7613 Elf_Internal_Sym **locsymsp,
7614 const Elf_Internal_Rela *rel,
7617 unsigned long r_symndx;
7619 struct elf_link_hash_entry *h;
7620 Elf_Internal_Sym *sym;
7624 r_symndx = ELF64_R_SYM (rel->r_info);
7625 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7628 if ((*tls_maskp != NULL && **tls_maskp != 0)
7630 || ppc64_elf_section_data (sec) == NULL
7631 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7634 /* Look inside a TOC section too. */
7637 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7638 off = h->root.u.def.value;
7641 off = sym->st_value;
7642 off += rel->r_addend;
7643 BFD_ASSERT (off % 8 == 0);
7644 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7645 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7646 if (toc_symndx != NULL)
7647 *toc_symndx = r_symndx;
7648 if (toc_addend != NULL)
7649 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7650 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7652 if ((h == NULL || is_static_defined (h))
7653 && (next_r == -1 || next_r == -2))
7658 /* Find (or create) an entry in the tocsave hash table. */
7660 static struct tocsave_entry *
7661 tocsave_find (struct ppc_link_hash_table *htab,
7662 enum insert_option insert,
7663 Elf_Internal_Sym **local_syms,
7664 const Elf_Internal_Rela *irela,
7667 unsigned long r_indx;
7668 struct elf_link_hash_entry *h;
7669 Elf_Internal_Sym *sym;
7670 struct tocsave_entry ent, *p;
7672 struct tocsave_entry **slot;
7674 r_indx = ELF64_R_SYM (irela->r_info);
7675 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7677 if (ent.sec == NULL || ent.sec->output_section == NULL)
7680 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7685 ent.offset = h->root.u.def.value;
7687 ent.offset = sym->st_value;
7688 ent.offset += irela->r_addend;
7690 hash = tocsave_htab_hash (&ent);
7691 slot = ((struct tocsave_entry **)
7692 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7698 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7707 /* Adjust all global syms defined in opd sections. In gcc generated
7708 code for the old ABI, these will already have been done. */
7711 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7713 struct ppc_link_hash_entry *eh;
7715 struct _opd_sec_data *opd;
7717 if (h->root.type == bfd_link_hash_indirect)
7720 if (h->root.type != bfd_link_hash_defined
7721 && h->root.type != bfd_link_hash_defweak)
7724 eh = (struct ppc_link_hash_entry *) h;
7725 if (eh->adjust_done)
7728 sym_sec = eh->elf.root.u.def.section;
7729 opd = get_opd_info (sym_sec);
7730 if (opd != NULL && opd->adjust != NULL)
7732 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7735 /* This entry has been deleted. */
7736 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7739 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7740 if (discarded_section (dsec))
7742 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7746 eh->elf.root.u.def.value = 0;
7747 eh->elf.root.u.def.section = dsec;
7750 eh->elf.root.u.def.value += adjust;
7751 eh->adjust_done = 1;
7756 /* Handles decrementing dynamic reloc counts for the reloc specified by
7757 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7758 have already been determined. */
7761 dec_dynrel_count (bfd_vma r_info,
7763 struct bfd_link_info *info,
7764 Elf_Internal_Sym **local_syms,
7765 struct elf_link_hash_entry *h,
7766 Elf_Internal_Sym *sym)
7768 enum elf_ppc64_reloc_type r_type;
7769 asection *sym_sec = NULL;
7771 /* Can this reloc be dynamic? This switch, and later tests here
7772 should be kept in sync with the code in check_relocs. */
7773 r_type = ELF64_R_TYPE (r_info);
7779 case R_PPC64_TPREL16:
7780 case R_PPC64_TPREL16_LO:
7781 case R_PPC64_TPREL16_HI:
7782 case R_PPC64_TPREL16_HA:
7783 case R_PPC64_TPREL16_DS:
7784 case R_PPC64_TPREL16_LO_DS:
7785 case R_PPC64_TPREL16_HIGH:
7786 case R_PPC64_TPREL16_HIGHA:
7787 case R_PPC64_TPREL16_HIGHER:
7788 case R_PPC64_TPREL16_HIGHERA:
7789 case R_PPC64_TPREL16_HIGHEST:
7790 case R_PPC64_TPREL16_HIGHESTA:
7791 if (!bfd_link_pic (info))
7794 case R_PPC64_TPREL64:
7795 case R_PPC64_DTPMOD64:
7796 case R_PPC64_DTPREL64:
7797 case R_PPC64_ADDR64:
7801 case R_PPC64_ADDR14:
7802 case R_PPC64_ADDR14_BRNTAKEN:
7803 case R_PPC64_ADDR14_BRTAKEN:
7804 case R_PPC64_ADDR16:
7805 case R_PPC64_ADDR16_DS:
7806 case R_PPC64_ADDR16_HA:
7807 case R_PPC64_ADDR16_HI:
7808 case R_PPC64_ADDR16_HIGH:
7809 case R_PPC64_ADDR16_HIGHA:
7810 case R_PPC64_ADDR16_HIGHER:
7811 case R_PPC64_ADDR16_HIGHERA:
7812 case R_PPC64_ADDR16_HIGHEST:
7813 case R_PPC64_ADDR16_HIGHESTA:
7814 case R_PPC64_ADDR16_LO:
7815 case R_PPC64_ADDR16_LO_DS:
7816 case R_PPC64_ADDR24:
7817 case R_PPC64_ADDR32:
7818 case R_PPC64_UADDR16:
7819 case R_PPC64_UADDR32:
7820 case R_PPC64_UADDR64:
7825 if (local_syms != NULL)
7827 unsigned long r_symndx;
7828 bfd *ibfd = sec->owner;
7830 r_symndx = ELF64_R_SYM (r_info);
7831 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7835 if ((bfd_link_pic (info)
7836 && (must_be_dyn_reloc (info, r_type)
7838 && (!SYMBOLIC_BIND (info, h)
7839 || h->root.type == bfd_link_hash_defweak
7840 || !h->def_regular))))
7841 || (ELIMINATE_COPY_RELOCS
7842 && !bfd_link_pic (info)
7844 && (h->root.type == bfd_link_hash_defweak
7845 || !h->def_regular)))
7852 struct elf_dyn_relocs *p;
7853 struct elf_dyn_relocs **pp;
7854 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7856 /* elf_gc_sweep may have already removed all dyn relocs associated
7857 with local syms for a given section. Also, symbol flags are
7858 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7859 report a dynreloc miscount. */
7860 if (*pp == NULL && info->gc_sections)
7863 while ((p = *pp) != NULL)
7867 if (!must_be_dyn_reloc (info, r_type))
7879 struct ppc_dyn_relocs *p;
7880 struct ppc_dyn_relocs **pp;
7882 bfd_boolean is_ifunc;
7884 if (local_syms == NULL)
7885 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7886 if (sym_sec == NULL)
7889 vpp = &elf_section_data (sym_sec)->local_dynrel;
7890 pp = (struct ppc_dyn_relocs **) vpp;
7892 if (*pp == NULL && info->gc_sections)
7895 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7896 while ((p = *pp) != NULL)
7898 if (p->sec == sec && p->ifunc == is_ifunc)
7909 /* xgettext:c-format */
7910 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7912 bfd_set_error (bfd_error_bad_value);
7916 /* Remove unused Official Procedure Descriptor entries. Currently we
7917 only remove those associated with functions in discarded link-once
7918 sections, or weakly defined functions that have been overridden. It
7919 would be possible to remove many more entries for statically linked
7923 ppc64_elf_edit_opd (struct bfd_link_info *info)
7926 bfd_boolean some_edited = FALSE;
7927 asection *need_pad = NULL;
7928 struct ppc_link_hash_table *htab;
7930 htab = ppc_hash_table (info);
7934 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7937 Elf_Internal_Rela *relstart, *rel, *relend;
7938 Elf_Internal_Shdr *symtab_hdr;
7939 Elf_Internal_Sym *local_syms;
7940 struct _opd_sec_data *opd;
7941 bfd_boolean need_edit, add_aux_fields, broken;
7942 bfd_size_type cnt_16b = 0;
7944 if (!is_ppc64_elf (ibfd))
7947 sec = bfd_get_section_by_name (ibfd, ".opd");
7948 if (sec == NULL || sec->size == 0)
7951 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7954 if (sec->output_section == bfd_abs_section_ptr)
7957 /* Look through the section relocs. */
7958 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7962 symtab_hdr = &elf_symtab_hdr (ibfd);
7964 /* Read the relocations. */
7965 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7967 if (relstart == NULL)
7970 /* First run through the relocs to check they are sane, and to
7971 determine whether we need to edit this opd section. */
7975 relend = relstart + sec->reloc_count;
7976 for (rel = relstart; rel < relend; )
7978 enum elf_ppc64_reloc_type r_type;
7979 unsigned long r_symndx;
7981 struct elf_link_hash_entry *h;
7982 Elf_Internal_Sym *sym;
7985 /* .opd contains an array of 16 or 24 byte entries. We're
7986 only interested in the reloc pointing to a function entry
7988 offset = rel->r_offset;
7989 if (rel + 1 == relend
7990 || rel[1].r_offset != offset + 8)
7992 /* If someone messes with .opd alignment then after a
7993 "ld -r" we might have padding in the middle of .opd.
7994 Also, there's nothing to prevent someone putting
7995 something silly in .opd with the assembler. No .opd
7996 optimization for them! */
7999 (_("%B: .opd is not a regular array of opd entries"), ibfd);
8004 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
8005 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
8008 /* xgettext:c-format */
8009 (_("%B: unexpected reloc type %u in .opd section"),
8015 r_symndx = ELF64_R_SYM (rel->r_info);
8016 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8020 if (sym_sec == NULL || sym_sec->owner == NULL)
8022 const char *sym_name;
8024 sym_name = h->root.root.string;
8026 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8030 /* xgettext:c-format */
8031 (_("%B: undefined sym `%s' in .opd section"),
8037 /* opd entries are always for functions defined in the
8038 current input bfd. If the symbol isn't defined in the
8039 input bfd, then we won't be using the function in this
8040 bfd; It must be defined in a linkonce section in another
8041 bfd, or is weak. It's also possible that we are
8042 discarding the function due to a linker script /DISCARD/,
8043 which we test for via the output_section. */
8044 if (sym_sec->owner != ibfd
8045 || sym_sec->output_section == bfd_abs_section_ptr)
8049 if (rel + 1 == relend
8050 || (rel + 2 < relend
8051 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
8056 if (sec->size == offset + 24)
8061 if (sec->size == offset + 16)
8068 else if (rel + 1 < relend
8069 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8070 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8072 if (rel[0].r_offset == offset + 16)
8074 else if (rel[0].r_offset != offset + 24)
8081 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8083 if (!broken && (need_edit || add_aux_fields))
8085 Elf_Internal_Rela *write_rel;
8086 Elf_Internal_Shdr *rel_hdr;
8087 bfd_byte *rptr, *wptr;
8088 bfd_byte *new_contents;
8091 new_contents = NULL;
8092 amt = OPD_NDX (sec->size) * sizeof (long);
8093 opd = &ppc64_elf_section_data (sec)->u.opd;
8094 opd->adjust = bfd_zalloc (sec->owner, amt);
8095 if (opd->adjust == NULL)
8097 ppc64_elf_section_data (sec)->sec_type = sec_opd;
8099 /* This seems a waste of time as input .opd sections are all
8100 zeros as generated by gcc, but I suppose there's no reason
8101 this will always be so. We might start putting something in
8102 the third word of .opd entries. */
8103 if ((sec->flags & SEC_IN_MEMORY) == 0)
8106 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8111 if (local_syms != NULL
8112 && symtab_hdr->contents != (unsigned char *) local_syms)
8114 if (elf_section_data (sec)->relocs != relstart)
8118 sec->contents = loc;
8119 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8122 elf_section_data (sec)->relocs = relstart;
8124 new_contents = sec->contents;
8127 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8128 if (new_contents == NULL)
8132 wptr = new_contents;
8133 rptr = sec->contents;
8134 write_rel = relstart;
8135 for (rel = relstart; rel < relend; )
8137 unsigned long r_symndx;
8139 struct elf_link_hash_entry *h;
8140 struct ppc_link_hash_entry *fdh = NULL;
8141 Elf_Internal_Sym *sym;
8143 Elf_Internal_Rela *next_rel;
8146 r_symndx = ELF64_R_SYM (rel->r_info);
8147 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8152 if (next_rel + 1 == relend
8153 || (next_rel + 2 < relend
8154 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8157 /* See if the .opd entry is full 24 byte or
8158 16 byte (with fd_aux entry overlapped with next
8161 if (next_rel == relend)
8163 if (sec->size == rel->r_offset + 16)
8166 else if (next_rel->r_offset == rel->r_offset + 16)
8170 && h->root.root.string[0] == '.')
8172 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8175 fdh = ppc_follow_link (fdh);
8176 if (fdh->elf.root.type != bfd_link_hash_defined
8177 && fdh->elf.root.type != bfd_link_hash_defweak)
8182 skip = (sym_sec->owner != ibfd
8183 || sym_sec->output_section == bfd_abs_section_ptr);
8186 if (fdh != NULL && sym_sec->owner == ibfd)
8188 /* Arrange for the function descriptor sym
8190 fdh->elf.root.u.def.value = 0;
8191 fdh->elf.root.u.def.section = sym_sec;
8193 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8195 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8200 if (!dec_dynrel_count (rel->r_info, sec, info,
8204 if (++rel == next_rel)
8207 r_symndx = ELF64_R_SYM (rel->r_info);
8208 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8215 /* We'll be keeping this opd entry. */
8220 /* Redefine the function descriptor symbol to
8221 this location in the opd section. It is
8222 necessary to update the value here rather
8223 than using an array of adjustments as we do
8224 for local symbols, because various places
8225 in the generic ELF code use the value
8226 stored in u.def.value. */
8227 fdh->elf.root.u.def.value = wptr - new_contents;
8228 fdh->adjust_done = 1;
8231 /* Local syms are a bit tricky. We could
8232 tweak them as they can be cached, but
8233 we'd need to look through the local syms
8234 for the function descriptor sym which we
8235 don't have at the moment. So keep an
8236 array of adjustments. */
8237 adjust = (wptr - new_contents) - (rptr - sec->contents);
8238 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8241 memcpy (wptr, rptr, opd_ent_size);
8242 wptr += opd_ent_size;
8243 if (add_aux_fields && opd_ent_size == 16)
8245 memset (wptr, '\0', 8);
8249 /* We need to adjust any reloc offsets to point to the
8251 for ( ; rel != next_rel; ++rel)
8253 rel->r_offset += adjust;
8254 if (write_rel != rel)
8255 memcpy (write_rel, rel, sizeof (*rel));
8260 rptr += opd_ent_size;
8263 sec->size = wptr - new_contents;
8264 sec->reloc_count = write_rel - relstart;
8267 free (sec->contents);
8268 sec->contents = new_contents;
8271 /* Fudge the header size too, as this is used later in
8272 elf_bfd_final_link if we are emitting relocs. */
8273 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8274 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8277 else if (elf_section_data (sec)->relocs != relstart)
8280 if (local_syms != NULL
8281 && symtab_hdr->contents != (unsigned char *) local_syms)
8283 if (!info->keep_memory)
8286 symtab_hdr->contents = (unsigned char *) local_syms;
8291 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8293 /* If we are doing a final link and the last .opd entry is just 16 byte
8294 long, add a 8 byte padding after it. */
8295 if (need_pad != NULL && !bfd_link_relocatable (info))
8299 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8301 BFD_ASSERT (need_pad->size > 0);
8303 p = bfd_malloc (need_pad->size + 8);
8307 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8308 p, 0, need_pad->size))
8311 need_pad->contents = p;
8312 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8316 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8320 need_pad->contents = p;
8323 memset (need_pad->contents + need_pad->size, 0, 8);
8324 need_pad->size += 8;
8330 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8333 ppc64_elf_tls_setup (struct bfd_link_info *info)
8335 struct ppc_link_hash_table *htab;
8337 htab = ppc_hash_table (info);
8341 if (abiversion (info->output_bfd) == 1)
8344 if (htab->params->no_multi_toc)
8345 htab->do_multi_toc = 0;
8346 else if (!htab->do_multi_toc)
8347 htab->params->no_multi_toc = 1;
8349 if (htab->params->plt_localentry0 < 0)
8350 htab->params->plt_localentry0
8351 = elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8352 FALSE, FALSE, FALSE) != NULL;
8354 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8355 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8356 FALSE, FALSE, TRUE));
8357 /* Move dynamic linking info to the function descriptor sym. */
8358 if (htab->tls_get_addr != NULL)
8359 func_desc_adjust (&htab->tls_get_addr->elf, info);
8360 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8361 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8362 FALSE, FALSE, TRUE));
8363 if (htab->params->tls_get_addr_opt)
8365 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8367 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8368 FALSE, FALSE, TRUE);
8370 func_desc_adjust (opt, info);
8371 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8372 FALSE, FALSE, TRUE);
8374 && (opt_fd->root.type == bfd_link_hash_defined
8375 || opt_fd->root.type == bfd_link_hash_defweak))
8377 /* If glibc supports an optimized __tls_get_addr call stub,
8378 signalled by the presence of __tls_get_addr_opt, and we'll
8379 be calling __tls_get_addr via a plt call stub, then
8380 make __tls_get_addr point to __tls_get_addr_opt. */
8381 tga_fd = &htab->tls_get_addr_fd->elf;
8382 if (htab->elf.dynamic_sections_created
8384 && (tga_fd->type == STT_FUNC
8385 || tga_fd->needs_plt)
8386 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8387 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8389 struct plt_entry *ent;
8391 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8392 if (ent->plt.refcount > 0)
8396 tga_fd->root.type = bfd_link_hash_indirect;
8397 tga_fd->root.u.i.link = &opt_fd->root;
8398 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8400 if (opt_fd->dynindx != -1)
8402 /* Use __tls_get_addr_opt in dynamic relocations. */
8403 opt_fd->dynindx = -1;
8404 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8405 opt_fd->dynstr_index);
8406 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8409 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8410 tga = &htab->tls_get_addr->elf;
8411 if (opt != NULL && tga != NULL)
8413 tga->root.type = bfd_link_hash_indirect;
8414 tga->root.u.i.link = &opt->root;
8415 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8417 _bfd_elf_link_hash_hide_symbol (info, opt,
8419 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8421 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8422 htab->tls_get_addr_fd->is_func_descriptor = 1;
8423 if (htab->tls_get_addr != NULL)
8425 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8426 htab->tls_get_addr->is_func = 1;
8431 else if (htab->params->tls_get_addr_opt < 0)
8432 htab->params->tls_get_addr_opt = 0;
8434 return _bfd_elf_tls_setup (info->output_bfd, info);
8437 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8441 branch_reloc_hash_match (const bfd *ibfd,
8442 const Elf_Internal_Rela *rel,
8443 const struct ppc_link_hash_entry *hash1,
8444 const struct ppc_link_hash_entry *hash2)
8446 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8447 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8448 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8450 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8452 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8453 struct elf_link_hash_entry *h;
8455 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8456 h = elf_follow_link (h);
8457 if (h == &hash1->elf || h == &hash2->elf)
8463 /* Run through all the TLS relocs looking for optimization
8464 opportunities. The linker has been hacked (see ppc64elf.em) to do
8465 a preliminary section layout so that we know the TLS segment
8466 offsets. We can't optimize earlier because some optimizations need
8467 to know the tp offset, and we need to optimize before allocating
8468 dynamic relocations. */
8471 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8475 struct ppc_link_hash_table *htab;
8476 unsigned char *toc_ref;
8479 if (!bfd_link_executable (info))
8482 htab = ppc_hash_table (info);
8486 /* Make two passes over the relocs. On the first pass, mark toc
8487 entries involved with tls relocs, and check that tls relocs
8488 involved in setting up a tls_get_addr call are indeed followed by
8489 such a call. If they are not, we can't do any tls optimization.
8490 On the second pass twiddle tls_mask flags to notify
8491 relocate_section that optimization can be done, and adjust got
8492 and plt refcounts. */
8494 for (pass = 0; pass < 2; ++pass)
8495 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8497 Elf_Internal_Sym *locsyms = NULL;
8498 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8500 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8501 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8503 Elf_Internal_Rela *relstart, *rel, *relend;
8504 bfd_boolean found_tls_get_addr_arg = 0;
8506 /* Read the relocations. */
8507 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8509 if (relstart == NULL)
8515 relend = relstart + sec->reloc_count;
8516 for (rel = relstart; rel < relend; rel++)
8518 enum elf_ppc64_reloc_type r_type;
8519 unsigned long r_symndx;
8520 struct elf_link_hash_entry *h;
8521 Elf_Internal_Sym *sym;
8523 unsigned char *tls_mask;
8524 unsigned char tls_set, tls_clear, tls_type = 0;
8526 bfd_boolean ok_tprel, is_local;
8527 long toc_ref_index = 0;
8528 int expecting_tls_get_addr = 0;
8529 bfd_boolean ret = FALSE;
8531 r_symndx = ELF64_R_SYM (rel->r_info);
8532 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8536 if (elf_section_data (sec)->relocs != relstart)
8538 if (toc_ref != NULL)
8541 && (elf_symtab_hdr (ibfd).contents
8542 != (unsigned char *) locsyms))
8549 if (h->root.type == bfd_link_hash_defined
8550 || h->root.type == bfd_link_hash_defweak)
8551 value = h->root.u.def.value;
8552 else if (h->root.type == bfd_link_hash_undefweak)
8556 found_tls_get_addr_arg = 0;
8561 /* Symbols referenced by TLS relocs must be of type
8562 STT_TLS. So no need for .opd local sym adjust. */
8563 value = sym->st_value;
8572 && h->root.type == bfd_link_hash_undefweak)
8574 else if (sym_sec != NULL
8575 && sym_sec->output_section != NULL)
8577 value += sym_sec->output_offset;
8578 value += sym_sec->output_section->vma;
8579 value -= htab->elf.tls_sec->vma;
8580 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8581 < (bfd_vma) 1 << 32);
8585 r_type = ELF64_R_TYPE (rel->r_info);
8586 /* If this section has old-style __tls_get_addr calls
8587 without marker relocs, then check that each
8588 __tls_get_addr call reloc is preceded by a reloc
8589 that conceivably belongs to the __tls_get_addr arg
8590 setup insn. If we don't find matching arg setup
8591 relocs, don't do any tls optimization. */
8593 && sec->has_tls_get_addr_call
8595 && (h == &htab->tls_get_addr->elf
8596 || h == &htab->tls_get_addr_fd->elf)
8597 && !found_tls_get_addr_arg
8598 && is_branch_reloc (r_type))
8600 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8601 "TLS optimization disabled\n"),
8602 ibfd, sec, rel->r_offset);
8607 found_tls_get_addr_arg = 0;
8610 case R_PPC64_GOT_TLSLD16:
8611 case R_PPC64_GOT_TLSLD16_LO:
8612 expecting_tls_get_addr = 1;
8613 found_tls_get_addr_arg = 1;
8616 case R_PPC64_GOT_TLSLD16_HI:
8617 case R_PPC64_GOT_TLSLD16_HA:
8618 /* These relocs should never be against a symbol
8619 defined in a shared lib. Leave them alone if
8620 that turns out to be the case. */
8627 tls_type = TLS_TLS | TLS_LD;
8630 case R_PPC64_GOT_TLSGD16:
8631 case R_PPC64_GOT_TLSGD16_LO:
8632 expecting_tls_get_addr = 1;
8633 found_tls_get_addr_arg = 1;
8636 case R_PPC64_GOT_TLSGD16_HI:
8637 case R_PPC64_GOT_TLSGD16_HA:
8643 tls_set = TLS_TLS | TLS_TPRELGD;
8645 tls_type = TLS_TLS | TLS_GD;
8648 case R_PPC64_GOT_TPREL16_DS:
8649 case R_PPC64_GOT_TPREL16_LO_DS:
8650 case R_PPC64_GOT_TPREL16_HI:
8651 case R_PPC64_GOT_TPREL16_HA:
8656 tls_clear = TLS_TPREL;
8657 tls_type = TLS_TLS | TLS_TPREL;
8664 found_tls_get_addr_arg = 1;
8669 case R_PPC64_TOC16_LO:
8670 if (sym_sec == NULL || sym_sec != toc)
8673 /* Mark this toc entry as referenced by a TLS
8674 code sequence. We can do that now in the
8675 case of R_PPC64_TLS, and after checking for
8676 tls_get_addr for the TOC16 relocs. */
8677 if (toc_ref == NULL)
8678 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8679 if (toc_ref == NULL)
8683 value = h->root.u.def.value;
8685 value = sym->st_value;
8686 value += rel->r_addend;
8689 BFD_ASSERT (value < toc->size
8690 && toc->output_offset % 8 == 0);
8691 toc_ref_index = (value + toc->output_offset) / 8;
8692 if (r_type == R_PPC64_TLS
8693 || r_type == R_PPC64_TLSGD
8694 || r_type == R_PPC64_TLSLD)
8696 toc_ref[toc_ref_index] = 1;
8700 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8705 expecting_tls_get_addr = 2;
8708 case R_PPC64_TPREL64:
8712 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8717 tls_set = TLS_EXPLICIT;
8718 tls_clear = TLS_TPREL;
8723 case R_PPC64_DTPMOD64:
8727 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8729 if (rel + 1 < relend
8731 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8732 && rel[1].r_offset == rel->r_offset + 8)
8736 tls_set = TLS_EXPLICIT | TLS_GD;
8739 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8748 tls_set = TLS_EXPLICIT;
8759 if (!expecting_tls_get_addr
8760 || !sec->has_tls_get_addr_call)
8763 if (rel + 1 < relend
8764 && branch_reloc_hash_match (ibfd, rel + 1,
8766 htab->tls_get_addr_fd))
8768 if (expecting_tls_get_addr == 2)
8770 /* Check for toc tls entries. */
8771 unsigned char *toc_tls;
8774 retval = get_tls_mask (&toc_tls, NULL, NULL,
8779 if (toc_tls != NULL)
8781 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8782 found_tls_get_addr_arg = 1;
8784 toc_ref[toc_ref_index] = 1;
8790 if (expecting_tls_get_addr != 1)
8793 /* Uh oh, we didn't find the expected call. We
8794 could just mark this symbol to exclude it
8795 from tls optimization but it's safer to skip
8796 the entire optimization. */
8797 /* xgettext:c-format */
8798 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8799 "TLS optimization disabled\n"),
8800 ibfd, sec, rel->r_offset);
8805 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8807 struct plt_entry *ent;
8808 for (ent = htab->tls_get_addr->elf.plt.plist;
8811 if (ent->addend == 0)
8813 if (ent->plt.refcount > 0)
8815 ent->plt.refcount -= 1;
8816 expecting_tls_get_addr = 0;
8822 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8824 struct plt_entry *ent;
8825 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8828 if (ent->addend == 0)
8830 if (ent->plt.refcount > 0)
8831 ent->plt.refcount -= 1;
8839 if ((tls_set & TLS_EXPLICIT) == 0)
8841 struct got_entry *ent;
8843 /* Adjust got entry for this reloc. */
8847 ent = elf_local_got_ents (ibfd)[r_symndx];
8849 for (; ent != NULL; ent = ent->next)
8850 if (ent->addend == rel->r_addend
8851 && ent->owner == ibfd
8852 && ent->tls_type == tls_type)
8859 /* We managed to get rid of a got entry. */
8860 if (ent->got.refcount > 0)
8861 ent->got.refcount -= 1;
8866 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8867 we'll lose one or two dyn relocs. */
8868 if (!dec_dynrel_count (rel->r_info, sec, info,
8872 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8874 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8880 *tls_mask |= tls_set;
8881 *tls_mask &= ~tls_clear;
8884 if (elf_section_data (sec)->relocs != relstart)
8889 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8891 if (!info->keep_memory)
8894 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8898 if (toc_ref != NULL)
8903 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8904 the values of any global symbols in a toc section that has been
8905 edited. Globals in toc sections should be a rarity, so this function
8906 sets a flag if any are found in toc sections other than the one just
8907 edited, so that futher hash table traversals can be avoided. */
8909 struct adjust_toc_info
8912 unsigned long *skip;
8913 bfd_boolean global_toc_syms;
8916 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8919 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8921 struct ppc_link_hash_entry *eh;
8922 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8925 if (h->root.type != bfd_link_hash_defined
8926 && h->root.type != bfd_link_hash_defweak)
8929 eh = (struct ppc_link_hash_entry *) h;
8930 if (eh->adjust_done)
8933 if (eh->elf.root.u.def.section == toc_inf->toc)
8935 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8936 i = toc_inf->toc->rawsize >> 3;
8938 i = eh->elf.root.u.def.value >> 3;
8940 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8943 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8946 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8947 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8950 eh->elf.root.u.def.value -= toc_inf->skip[i];
8951 eh->adjust_done = 1;
8953 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8954 toc_inf->global_toc_syms = TRUE;
8959 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8960 on a _LO variety toc/got reloc. */
8963 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8965 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8966 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8967 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8968 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8969 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8970 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8971 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8972 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8973 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8974 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8975 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8976 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8977 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8978 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8979 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8980 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
8981 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8982 /* Exclude lfqu by testing reloc. If relocs are ever
8983 defined for the reduced D field in psq_lu then those
8984 will need testing too. */
8985 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8986 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
8988 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
8989 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8990 /* Exclude stfqu. psq_stu as above for psq_lu. */
8991 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8992 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
8993 && (insn & 1) == 0));
8996 /* Examine all relocs referencing .toc sections in order to remove
8997 unused .toc entries. */
9000 ppc64_elf_edit_toc (struct bfd_link_info *info)
9003 struct adjust_toc_info toc_inf;
9004 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9006 htab->do_toc_opt = 1;
9007 toc_inf.global_toc_syms = TRUE;
9008 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9010 asection *toc, *sec;
9011 Elf_Internal_Shdr *symtab_hdr;
9012 Elf_Internal_Sym *local_syms;
9013 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
9014 unsigned long *skip, *drop;
9015 unsigned char *used;
9016 unsigned char *keep, last, some_unused;
9018 if (!is_ppc64_elf (ibfd))
9021 toc = bfd_get_section_by_name (ibfd, ".toc");
9024 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
9025 || discarded_section (toc))
9030 symtab_hdr = &elf_symtab_hdr (ibfd);
9032 /* Look at sections dropped from the final link. */
9035 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9037 if (sec->reloc_count == 0
9038 || !discarded_section (sec)
9039 || get_opd_info (sec)
9040 || (sec->flags & SEC_ALLOC) == 0
9041 || (sec->flags & SEC_DEBUGGING) != 0)
9044 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
9045 if (relstart == NULL)
9048 /* Run through the relocs to see which toc entries might be
9050 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9052 enum elf_ppc64_reloc_type r_type;
9053 unsigned long r_symndx;
9055 struct elf_link_hash_entry *h;
9056 Elf_Internal_Sym *sym;
9059 r_type = ELF64_R_TYPE (rel->r_info);
9066 case R_PPC64_TOC16_LO:
9067 case R_PPC64_TOC16_HI:
9068 case R_PPC64_TOC16_HA:
9069 case R_PPC64_TOC16_DS:
9070 case R_PPC64_TOC16_LO_DS:
9074 r_symndx = ELF64_R_SYM (rel->r_info);
9075 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9083 val = h->root.u.def.value;
9085 val = sym->st_value;
9086 val += rel->r_addend;
9088 if (val >= toc->size)
9091 /* Anything in the toc ought to be aligned to 8 bytes.
9092 If not, don't mark as unused. */
9098 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9103 skip[val >> 3] = ref_from_discarded;
9106 if (elf_section_data (sec)->relocs != relstart)
9110 /* For largetoc loads of address constants, we can convert
9111 . addis rx,2,addr@got@ha
9112 . ld ry,addr@got@l(rx)
9114 . addis rx,2,addr@toc@ha
9115 . addi ry,rx,addr@toc@l
9116 when addr is within 2G of the toc pointer. This then means
9117 that the word storing "addr" in the toc is no longer needed. */
9119 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9120 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9121 && toc->reloc_count != 0)
9123 /* Read toc relocs. */
9124 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9126 if (toc_relocs == NULL)
9129 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9131 enum elf_ppc64_reloc_type r_type;
9132 unsigned long r_symndx;
9134 struct elf_link_hash_entry *h;
9135 Elf_Internal_Sym *sym;
9138 r_type = ELF64_R_TYPE (rel->r_info);
9139 if (r_type != R_PPC64_ADDR64)
9142 r_symndx = ELF64_R_SYM (rel->r_info);
9143 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9148 || sym_sec->output_section == NULL
9149 || discarded_section (sym_sec))
9152 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9157 if (h->type == STT_GNU_IFUNC)
9159 val = h->root.u.def.value;
9163 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9165 val = sym->st_value;
9167 val += rel->r_addend;
9168 val += sym_sec->output_section->vma + sym_sec->output_offset;
9170 /* We don't yet know the exact toc pointer value, but we
9171 know it will be somewhere in the toc section. Don't
9172 optimize if the difference from any possible toc
9173 pointer is outside [ff..f80008000, 7fff7fff]. */
9174 addr = toc->output_section->vma + TOC_BASE_OFF;
9175 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9178 addr = toc->output_section->vma + toc->output_section->rawsize;
9179 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9184 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9189 skip[rel->r_offset >> 3]
9190 |= can_optimize | ((rel - toc_relocs) << 2);
9197 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9201 if (local_syms != NULL
9202 && symtab_hdr->contents != (unsigned char *) local_syms)
9206 && elf_section_data (sec)->relocs != relstart)
9208 if (toc_relocs != NULL
9209 && elf_section_data (toc)->relocs != toc_relocs)
9216 /* Now check all kept sections that might reference the toc.
9217 Check the toc itself last. */
9218 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9221 sec = (sec == toc ? NULL
9222 : sec->next == NULL ? toc
9223 : sec->next == toc && toc->next ? toc->next
9228 if (sec->reloc_count == 0
9229 || discarded_section (sec)
9230 || get_opd_info (sec)
9231 || (sec->flags & SEC_ALLOC) == 0
9232 || (sec->flags & SEC_DEBUGGING) != 0)
9235 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9237 if (relstart == NULL)
9243 /* Mark toc entries referenced as used. */
9247 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9249 enum elf_ppc64_reloc_type r_type;
9250 unsigned long r_symndx;
9252 struct elf_link_hash_entry *h;
9253 Elf_Internal_Sym *sym;
9255 enum {no_check, check_lo, check_ha} insn_check;
9257 r_type = ELF64_R_TYPE (rel->r_info);
9261 insn_check = no_check;
9264 case R_PPC64_GOT_TLSLD16_HA:
9265 case R_PPC64_GOT_TLSGD16_HA:
9266 case R_PPC64_GOT_TPREL16_HA:
9267 case R_PPC64_GOT_DTPREL16_HA:
9268 case R_PPC64_GOT16_HA:
9269 case R_PPC64_TOC16_HA:
9270 insn_check = check_ha;
9273 case R_PPC64_GOT_TLSLD16_LO:
9274 case R_PPC64_GOT_TLSGD16_LO:
9275 case R_PPC64_GOT_TPREL16_LO_DS:
9276 case R_PPC64_GOT_DTPREL16_LO_DS:
9277 case R_PPC64_GOT16_LO:
9278 case R_PPC64_GOT16_LO_DS:
9279 case R_PPC64_TOC16_LO:
9280 case R_PPC64_TOC16_LO_DS:
9281 insn_check = check_lo;
9285 if (insn_check != no_check)
9287 bfd_vma off = rel->r_offset & ~3;
9288 unsigned char buf[4];
9291 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9296 insn = bfd_get_32 (ibfd, buf);
9297 if (insn_check == check_lo
9298 ? !ok_lo_toc_insn (insn, r_type)
9299 : ((insn & ((0x3f << 26) | 0x1f << 16))
9300 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9304 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9305 sprintf (str, "%#08x", insn);
9306 info->callbacks->einfo
9307 /* xgettext:c-format */
9308 (_("%H: toc optimization is not supported for"
9309 " %s instruction.\n"),
9310 ibfd, sec, rel->r_offset & ~3, str);
9317 case R_PPC64_TOC16_LO:
9318 case R_PPC64_TOC16_HI:
9319 case R_PPC64_TOC16_HA:
9320 case R_PPC64_TOC16_DS:
9321 case R_PPC64_TOC16_LO_DS:
9322 /* In case we're taking addresses of toc entries. */
9323 case R_PPC64_ADDR64:
9330 r_symndx = ELF64_R_SYM (rel->r_info);
9331 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9342 val = h->root.u.def.value;
9344 val = sym->st_value;
9345 val += rel->r_addend;
9347 if (val >= toc->size)
9350 if ((skip[val >> 3] & can_optimize) != 0)
9357 case R_PPC64_TOC16_HA:
9360 case R_PPC64_TOC16_LO_DS:
9361 off = rel->r_offset;
9362 off += (bfd_big_endian (ibfd) ? -2 : 3);
9363 if (!bfd_get_section_contents (ibfd, sec, &opc,
9369 if ((opc & (0x3f << 2)) == (58u << 2))
9374 /* Wrong sort of reloc, or not a ld. We may
9375 as well clear ref_from_discarded too. */
9382 /* For the toc section, we only mark as used if this
9383 entry itself isn't unused. */
9384 else if ((used[rel->r_offset >> 3]
9385 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9388 /* Do all the relocs again, to catch reference
9397 if (elf_section_data (sec)->relocs != relstart)
9401 /* Merge the used and skip arrays. Assume that TOC
9402 doublewords not appearing as either used or unused belong
9403 to to an entry more than one doubleword in size. */
9404 for (drop = skip, keep = used, last = 0, some_unused = 0;
9405 drop < skip + (toc->size + 7) / 8;
9410 *drop &= ~ref_from_discarded;
9411 if ((*drop & can_optimize) != 0)
9415 else if ((*drop & ref_from_discarded) != 0)
9418 last = ref_from_discarded;
9428 bfd_byte *contents, *src;
9430 Elf_Internal_Sym *sym;
9431 bfd_boolean local_toc_syms = FALSE;
9433 /* Shuffle the toc contents, and at the same time convert the
9434 skip array from booleans into offsets. */
9435 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9438 elf_section_data (toc)->this_hdr.contents = contents;
9440 for (src = contents, off = 0, drop = skip;
9441 src < contents + toc->size;
9444 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9449 memcpy (src - off, src, 8);
9453 toc->rawsize = toc->size;
9454 toc->size = src - contents - off;
9456 /* Adjust addends for relocs against the toc section sym,
9457 and optimize any accesses we can. */
9458 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9460 if (sec->reloc_count == 0
9461 || discarded_section (sec))
9464 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9466 if (relstart == NULL)
9469 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9471 enum elf_ppc64_reloc_type r_type;
9472 unsigned long r_symndx;
9474 struct elf_link_hash_entry *h;
9477 r_type = ELF64_R_TYPE (rel->r_info);
9484 case R_PPC64_TOC16_LO:
9485 case R_PPC64_TOC16_HI:
9486 case R_PPC64_TOC16_HA:
9487 case R_PPC64_TOC16_DS:
9488 case R_PPC64_TOC16_LO_DS:
9489 case R_PPC64_ADDR64:
9493 r_symndx = ELF64_R_SYM (rel->r_info);
9494 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9502 val = h->root.u.def.value;
9505 val = sym->st_value;
9507 local_toc_syms = TRUE;
9510 val += rel->r_addend;
9512 if (val > toc->rawsize)
9514 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9516 else if ((skip[val >> 3] & can_optimize) != 0)
9518 Elf_Internal_Rela *tocrel
9519 = toc_relocs + (skip[val >> 3] >> 2);
9520 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9524 case R_PPC64_TOC16_HA:
9525 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9528 case R_PPC64_TOC16_LO_DS:
9529 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9533 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9535 info->callbacks->einfo
9536 /* xgettext:c-format */
9537 (_("%H: %s references "
9538 "optimized away TOC entry\n"),
9539 ibfd, sec, rel->r_offset,
9540 ppc64_elf_howto_table[r_type]->name);
9541 bfd_set_error (bfd_error_bad_value);
9544 rel->r_addend = tocrel->r_addend;
9545 elf_section_data (sec)->relocs = relstart;
9549 if (h != NULL || sym->st_value != 0)
9552 rel->r_addend -= skip[val >> 3];
9553 elf_section_data (sec)->relocs = relstart;
9556 if (elf_section_data (sec)->relocs != relstart)
9560 /* We shouldn't have local or global symbols defined in the TOC,
9561 but handle them anyway. */
9562 if (local_syms != NULL)
9563 for (sym = local_syms;
9564 sym < local_syms + symtab_hdr->sh_info;
9566 if (sym->st_value != 0
9567 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9571 if (sym->st_value > toc->rawsize)
9572 i = toc->rawsize >> 3;
9574 i = sym->st_value >> 3;
9576 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9580 (_("%s defined on removed toc entry"),
9581 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9584 while ((skip[i] & (ref_from_discarded | can_optimize)));
9585 sym->st_value = (bfd_vma) i << 3;
9588 sym->st_value -= skip[i];
9589 symtab_hdr->contents = (unsigned char *) local_syms;
9592 /* Adjust any global syms defined in this toc input section. */
9593 if (toc_inf.global_toc_syms)
9596 toc_inf.skip = skip;
9597 toc_inf.global_toc_syms = FALSE;
9598 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9602 if (toc->reloc_count != 0)
9604 Elf_Internal_Shdr *rel_hdr;
9605 Elf_Internal_Rela *wrel;
9608 /* Remove unused toc relocs, and adjust those we keep. */
9609 if (toc_relocs == NULL)
9610 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9612 if (toc_relocs == NULL)
9616 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9617 if ((skip[rel->r_offset >> 3]
9618 & (ref_from_discarded | can_optimize)) == 0)
9620 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9621 wrel->r_info = rel->r_info;
9622 wrel->r_addend = rel->r_addend;
9625 else if (!dec_dynrel_count (rel->r_info, toc, info,
9626 &local_syms, NULL, NULL))
9629 elf_section_data (toc)->relocs = toc_relocs;
9630 toc->reloc_count = wrel - toc_relocs;
9631 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9632 sz = rel_hdr->sh_entsize;
9633 rel_hdr->sh_size = toc->reloc_count * sz;
9636 else if (toc_relocs != NULL
9637 && elf_section_data (toc)->relocs != toc_relocs)
9640 if (local_syms != NULL
9641 && symtab_hdr->contents != (unsigned char *) local_syms)
9643 if (!info->keep_memory)
9646 symtab_hdr->contents = (unsigned char *) local_syms;
9654 /* Return true iff input section I references the TOC using
9655 instructions limited to +/-32k offsets. */
9658 ppc64_elf_has_small_toc_reloc (asection *i)
9660 return (is_ppc64_elf (i->owner)
9661 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9664 /* Allocate space for one GOT entry. */
9667 allocate_got (struct elf_link_hash_entry *h,
9668 struct bfd_link_info *info,
9669 struct got_entry *gent)
9671 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9672 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9673 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9675 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9676 ? 2 : 1) * sizeof (Elf64_External_Rela);
9677 asection *got = ppc64_elf_tdata (gent->owner)->got;
9679 gent->got.offset = got->size;
9680 got->size += entsize;
9682 if (h->type == STT_GNU_IFUNC)
9684 htab->elf.irelplt->size += rentsize;
9685 htab->got_reli_size += rentsize;
9687 else if ((bfd_link_pic (info)
9688 || (htab->elf.dynamic_sections_created
9690 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9691 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9693 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9694 relgot->size += rentsize;
9698 /* This function merges got entries in the same toc group. */
9701 merge_got_entries (struct got_entry **pent)
9703 struct got_entry *ent, *ent2;
9705 for (ent = *pent; ent != NULL; ent = ent->next)
9706 if (!ent->is_indirect)
9707 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9708 if (!ent2->is_indirect
9709 && ent2->addend == ent->addend
9710 && ent2->tls_type == ent->tls_type
9711 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9713 ent2->is_indirect = TRUE;
9714 ent2->got.ent = ent;
9718 /* If H is undefined weak, make it dynamic if that makes sense. */
9721 ensure_undefweak_dynamic (struct bfd_link_info *info,
9722 struct elf_link_hash_entry *h)
9724 struct elf_link_hash_table *htab = elf_hash_table (info);
9726 if (htab->dynamic_sections_created
9727 && info->dynamic_undefined_weak != 0
9728 && h->root.type == bfd_link_hash_undefweak
9731 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9732 return bfd_elf_link_record_dynamic_symbol (info, h);
9736 /* Allocate space in .plt, .got and associated reloc sections for
9740 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9742 struct bfd_link_info *info;
9743 struct ppc_link_hash_table *htab;
9745 struct ppc_link_hash_entry *eh;
9746 struct got_entry **pgent, *gent;
9748 if (h->root.type == bfd_link_hash_indirect)
9751 info = (struct bfd_link_info *) inf;
9752 htab = ppc_hash_table (info);
9756 eh = (struct ppc_link_hash_entry *) h;
9757 /* Run through the TLS GD got entries first if we're changing them
9759 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9760 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9761 if (gent->got.refcount > 0
9762 && (gent->tls_type & TLS_GD) != 0)
9764 /* This was a GD entry that has been converted to TPREL. If
9765 there happens to be a TPREL entry we can use that one. */
9766 struct got_entry *ent;
9767 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9768 if (ent->got.refcount > 0
9769 && (ent->tls_type & TLS_TPREL) != 0
9770 && ent->addend == gent->addend
9771 && ent->owner == gent->owner)
9773 gent->got.refcount = 0;
9777 /* If not, then we'll be using our own TPREL entry. */
9778 if (gent->got.refcount != 0)
9779 gent->tls_type = TLS_TLS | TLS_TPREL;
9782 /* Remove any list entry that won't generate a word in the GOT before
9783 we call merge_got_entries. Otherwise we risk merging to empty
9785 pgent = &h->got.glist;
9786 while ((gent = *pgent) != NULL)
9787 if (gent->got.refcount > 0)
9789 if ((gent->tls_type & TLS_LD) != 0
9792 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9793 *pgent = gent->next;
9796 pgent = &gent->next;
9799 *pgent = gent->next;
9801 if (!htab->do_multi_toc)
9802 merge_got_entries (&h->got.glist);
9804 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9805 if (!gent->is_indirect)
9807 /* Make sure this symbol is output as a dynamic symbol.
9808 Undefined weak syms won't yet be marked as dynamic. */
9809 if (!ensure_undefweak_dynamic (info, h))
9812 if (!is_ppc64_elf (gent->owner))
9815 allocate_got (h, info, gent);
9818 /* If no dynamic sections we can't have dynamic relocs, except for
9819 IFUNCs which are handled even in static executables. */
9820 if (!htab->elf.dynamic_sections_created
9821 && h->type != STT_GNU_IFUNC)
9822 eh->dyn_relocs = NULL;
9824 /* Also discard relocs on undefined weak syms with non-default
9825 visibility, or when dynamic_undefined_weak says so. */
9826 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9827 eh->dyn_relocs = NULL;
9829 if (eh->dyn_relocs != NULL)
9831 struct elf_dyn_relocs *p, **pp;
9833 /* In the shared -Bsymbolic case, discard space allocated for
9834 dynamic pc-relative relocs against symbols which turn out to
9835 be defined in regular objects. For the normal shared case,
9836 discard space for relocs that have become local due to symbol
9837 visibility changes. */
9839 if (bfd_link_pic (info))
9841 /* Relocs that use pc_count are those that appear on a call
9842 insn, or certain REL relocs (see must_be_dyn_reloc) that
9843 can be generated via assembly. We want calls to
9844 protected symbols to resolve directly to the function
9845 rather than going via the plt. If people want function
9846 pointer comparisons to work as expected then they should
9847 avoid writing weird assembly. */
9848 if (SYMBOL_CALLS_LOCAL (info, h))
9850 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9852 p->count -= p->pc_count;
9861 if (eh->dyn_relocs != NULL)
9863 /* Make sure this symbol is output as a dynamic symbol.
9864 Undefined weak syms won't yet be marked as dynamic. */
9865 if (!ensure_undefweak_dynamic (info, h))
9869 else if (h->type == STT_GNU_IFUNC)
9871 /* A plt entry is always created when making direct calls to
9872 an ifunc, even when building a static executable, but
9873 that doesn't cover all cases. We may have only an ifunc
9874 initialised function pointer for a given ifunc symbol.
9876 For ELFv2, dynamic relocations are not required when
9877 generating a global entry PLT stub. */
9878 if (abiversion (info->output_bfd) >= 2)
9880 if (global_entry_stub (h))
9881 eh->dyn_relocs = NULL;
9884 /* For ELFv1 we have function descriptors. Descriptors need
9885 to be treated like PLT entries and thus have dynamic
9886 relocations. One exception is when the function
9887 descriptor is copied into .dynbss (which should only
9888 happen with ancient versions of gcc). */
9889 else if (h->needs_copy)
9890 eh->dyn_relocs = NULL;
9892 else if (ELIMINATE_COPY_RELOCS)
9894 /* For the non-pic case, discard space for relocs against
9895 symbols which turn out to need copy relocs or are not
9900 /* Make sure this symbol is output as a dynamic symbol.
9901 Undefined weak syms won't yet be marked as dynamic. */
9902 if (!ensure_undefweak_dynamic (info, h))
9905 if (h->dynindx == -1)
9906 eh->dyn_relocs = NULL;
9909 eh->dyn_relocs = NULL;
9912 /* Finally, allocate space. */
9913 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9915 asection *sreloc = elf_section_data (p->sec)->sreloc;
9916 if (eh->elf.type == STT_GNU_IFUNC)
9917 sreloc = htab->elf.irelplt;
9918 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9922 if ((htab->elf.dynamic_sections_created
9923 && h->dynindx != -1)
9924 || h->type == STT_GNU_IFUNC)
9926 struct plt_entry *pent;
9927 bfd_boolean doneone = FALSE;
9928 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9929 if (pent->plt.refcount > 0)
9931 if (!htab->elf.dynamic_sections_created
9932 || h->dynindx == -1)
9935 pent->plt.offset = s->size;
9936 s->size += PLT_ENTRY_SIZE (htab);
9937 s = htab->elf.irelplt;
9941 /* If this is the first .plt entry, make room for the special
9945 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9947 pent->plt.offset = s->size;
9949 /* Make room for this entry. */
9950 s->size += PLT_ENTRY_SIZE (htab);
9952 /* Make room for the .glink code. */
9955 s->size += GLINK_CALL_STUB_SIZE;
9958 /* We need bigger stubs past index 32767. */
9959 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9966 /* We also need to make an entry in the .rela.plt section. */
9967 s = htab->elf.srelplt;
9969 s->size += sizeof (Elf64_External_Rela);
9973 pent->plt.offset = (bfd_vma) -1;
9976 h->plt.plist = NULL;
9982 h->plt.plist = NULL;
9989 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9990 to set up space for global entry stubs. These are put in glink,
9991 after the branch table. */
9994 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9996 struct bfd_link_info *info;
9997 struct ppc_link_hash_table *htab;
9998 struct plt_entry *pent;
10001 if (h->root.type == bfd_link_hash_indirect)
10004 if (!h->pointer_equality_needed)
10007 if (h->def_regular)
10011 htab = ppc_hash_table (info);
10016 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10017 if (pent->plt.offset != (bfd_vma) -1
10018 && pent->addend == 0)
10020 /* For ELFv2, if this symbol is not defined in a regular file
10021 and we are not generating a shared library or pie, then we
10022 need to define the symbol in the executable on a call stub.
10023 This is to avoid text relocations. */
10024 s->size = (s->size + 15) & -16;
10025 h->root.type = bfd_link_hash_defined;
10026 h->root.u.def.section = s;
10027 h->root.u.def.value = s->size;
10034 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10035 read-only sections. */
10038 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
10040 if (h->root.type == bfd_link_hash_indirect)
10043 if (readonly_dynrelocs (h))
10045 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
10047 /* Not an error, just cut short the traversal. */
10053 /* Set the sizes of the dynamic sections. */
10056 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
10057 struct bfd_link_info *info)
10059 struct ppc_link_hash_table *htab;
10062 bfd_boolean relocs;
10064 struct got_entry *first_tlsld;
10066 htab = ppc_hash_table (info);
10070 dynobj = htab->elf.dynobj;
10071 if (dynobj == NULL)
10074 if (htab->elf.dynamic_sections_created)
10076 /* Set the contents of the .interp section to the interpreter. */
10077 if (bfd_link_executable (info) && !info->nointerp)
10079 s = bfd_get_linker_section (dynobj, ".interp");
10082 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10083 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10087 /* Set up .got offsets for local syms, and space for local dynamic
10089 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10091 struct got_entry **lgot_ents;
10092 struct got_entry **end_lgot_ents;
10093 struct plt_entry **local_plt;
10094 struct plt_entry **end_local_plt;
10095 unsigned char *lgot_masks;
10096 bfd_size_type locsymcount;
10097 Elf_Internal_Shdr *symtab_hdr;
10099 if (!is_ppc64_elf (ibfd))
10102 for (s = ibfd->sections; s != NULL; s = s->next)
10104 struct ppc_dyn_relocs *p;
10106 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10108 if (!bfd_is_abs_section (p->sec)
10109 && bfd_is_abs_section (p->sec->output_section))
10111 /* Input section has been discarded, either because
10112 it is a copy of a linkonce section or due to
10113 linker script /DISCARD/, so we'll be discarding
10116 else if (p->count != 0)
10118 asection *srel = elf_section_data (p->sec)->sreloc;
10120 srel = htab->elf.irelplt;
10121 srel->size += p->count * sizeof (Elf64_External_Rela);
10122 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10123 info->flags |= DF_TEXTREL;
10128 lgot_ents = elf_local_got_ents (ibfd);
10132 symtab_hdr = &elf_symtab_hdr (ibfd);
10133 locsymcount = symtab_hdr->sh_info;
10134 end_lgot_ents = lgot_ents + locsymcount;
10135 local_plt = (struct plt_entry **) end_lgot_ents;
10136 end_local_plt = local_plt + locsymcount;
10137 lgot_masks = (unsigned char *) end_local_plt;
10138 s = ppc64_elf_tdata (ibfd)->got;
10139 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10141 struct got_entry **pent, *ent;
10144 while ((ent = *pent) != NULL)
10145 if (ent->got.refcount > 0)
10147 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10149 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10154 unsigned int ent_size = 8;
10155 unsigned int rel_size = sizeof (Elf64_External_Rela);
10157 ent->got.offset = s->size;
10158 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10163 s->size += ent_size;
10164 if ((*lgot_masks & PLT_IFUNC) != 0)
10166 htab->elf.irelplt->size += rel_size;
10167 htab->got_reli_size += rel_size;
10169 else if (bfd_link_pic (info))
10171 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10172 srel->size += rel_size;
10181 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10182 for (; local_plt < end_local_plt; ++local_plt)
10184 struct plt_entry *ent;
10186 for (ent = *local_plt; ent != NULL; ent = ent->next)
10187 if (ent->plt.refcount > 0)
10189 s = htab->elf.iplt;
10190 ent->plt.offset = s->size;
10191 s->size += PLT_ENTRY_SIZE (htab);
10193 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10196 ent->plt.offset = (bfd_vma) -1;
10200 /* Allocate global sym .plt and .got entries, and space for global
10201 sym dynamic relocs. */
10202 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10203 /* Stash the end of glink branch table. */
10204 if (htab->glink != NULL)
10205 htab->glink->rawsize = htab->glink->size;
10207 if (!htab->opd_abi && !bfd_link_pic (info))
10208 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10210 first_tlsld = NULL;
10211 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10213 struct got_entry *ent;
10215 if (!is_ppc64_elf (ibfd))
10218 ent = ppc64_tlsld_got (ibfd);
10219 if (ent->got.refcount > 0)
10221 if (!htab->do_multi_toc && first_tlsld != NULL)
10223 ent->is_indirect = TRUE;
10224 ent->got.ent = first_tlsld;
10228 if (first_tlsld == NULL)
10230 s = ppc64_elf_tdata (ibfd)->got;
10231 ent->got.offset = s->size;
10234 if (bfd_link_pic (info))
10236 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10237 srel->size += sizeof (Elf64_External_Rela);
10242 ent->got.offset = (bfd_vma) -1;
10245 /* We now have determined the sizes of the various dynamic sections.
10246 Allocate memory for them. */
10248 for (s = dynobj->sections; s != NULL; s = s->next)
10250 if ((s->flags & SEC_LINKER_CREATED) == 0)
10253 if (s == htab->brlt || s == htab->relbrlt)
10254 /* These haven't been allocated yet; don't strip. */
10256 else if (s == htab->elf.sgot
10257 || s == htab->elf.splt
10258 || s == htab->elf.iplt
10259 || s == htab->glink
10260 || s == htab->elf.sdynbss
10261 || s == htab->elf.sdynrelro)
10263 /* Strip this section if we don't need it; see the
10266 else if (s == htab->glink_eh_frame)
10268 if (!bfd_is_abs_section (s->output_section))
10269 /* Not sized yet. */
10272 else if (CONST_STRNEQ (s->name, ".rela"))
10276 if (s != htab->elf.srelplt)
10279 /* We use the reloc_count field as a counter if we need
10280 to copy relocs into the output file. */
10281 s->reloc_count = 0;
10286 /* It's not one of our sections, so don't allocate space. */
10292 /* If we don't need this section, strip it from the
10293 output file. This is mostly to handle .rela.bss and
10294 .rela.plt. We must create both sections in
10295 create_dynamic_sections, because they must be created
10296 before the linker maps input sections to output
10297 sections. The linker does that before
10298 adjust_dynamic_symbol is called, and it is that
10299 function which decides whether anything needs to go
10300 into these sections. */
10301 s->flags |= SEC_EXCLUDE;
10305 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10308 /* Allocate memory for the section contents. We use bfd_zalloc
10309 here in case unused entries are not reclaimed before the
10310 section's contents are written out. This should not happen,
10311 but this way if it does we get a R_PPC64_NONE reloc in .rela
10312 sections instead of garbage.
10313 We also rely on the section contents being zero when writing
10314 the GOT and .dynrelro. */
10315 s->contents = bfd_zalloc (dynobj, s->size);
10316 if (s->contents == NULL)
10320 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10322 if (!is_ppc64_elf (ibfd))
10325 s = ppc64_elf_tdata (ibfd)->got;
10326 if (s != NULL && s != htab->elf.sgot)
10329 s->flags |= SEC_EXCLUDE;
10332 s->contents = bfd_zalloc (ibfd, s->size);
10333 if (s->contents == NULL)
10337 s = ppc64_elf_tdata (ibfd)->relgot;
10341 s->flags |= SEC_EXCLUDE;
10344 s->contents = bfd_zalloc (ibfd, s->size);
10345 if (s->contents == NULL)
10348 s->reloc_count = 0;
10353 if (htab->elf.dynamic_sections_created)
10355 bfd_boolean tls_opt;
10357 /* Add some entries to the .dynamic section. We fill in the
10358 values later, in ppc64_elf_finish_dynamic_sections, but we
10359 must add the entries now so that we get the correct size for
10360 the .dynamic section. The DT_DEBUG entry is filled in by the
10361 dynamic linker and used by the debugger. */
10362 #define add_dynamic_entry(TAG, VAL) \
10363 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10365 if (bfd_link_executable (info))
10367 if (!add_dynamic_entry (DT_DEBUG, 0))
10371 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10373 if (!add_dynamic_entry (DT_PLTGOT, 0)
10374 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10375 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10376 || !add_dynamic_entry (DT_JMPREL, 0)
10377 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10381 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10383 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10384 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10388 tls_opt = (htab->params->tls_get_addr_opt
10389 && htab->tls_get_addr_fd != NULL
10390 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10391 if (tls_opt || !htab->opd_abi)
10393 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10399 if (!add_dynamic_entry (DT_RELA, 0)
10400 || !add_dynamic_entry (DT_RELASZ, 0)
10401 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10404 /* If any dynamic relocs apply to a read-only section,
10405 then we need a DT_TEXTREL entry. */
10406 if ((info->flags & DF_TEXTREL) == 0)
10407 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10409 if ((info->flags & DF_TEXTREL) != 0)
10411 if (!add_dynamic_entry (DT_TEXTREL, 0))
10416 #undef add_dynamic_entry
10421 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10424 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10426 if (h->plt.plist != NULL
10428 && !h->pointer_equality_needed)
10431 return _bfd_elf_hash_symbol (h);
10434 /* Determine the type of stub needed, if any, for a call. */
10436 static inline enum ppc_stub_type
10437 ppc_type_of_stub (asection *input_sec,
10438 const Elf_Internal_Rela *rel,
10439 struct ppc_link_hash_entry **hash,
10440 struct plt_entry **plt_ent,
10441 bfd_vma destination,
10442 unsigned long local_off)
10444 struct ppc_link_hash_entry *h = *hash;
10446 bfd_vma branch_offset;
10447 bfd_vma max_branch_offset;
10448 enum elf_ppc64_reloc_type r_type;
10452 struct plt_entry *ent;
10453 struct ppc_link_hash_entry *fdh = h;
10455 && h->oh->is_func_descriptor)
10457 fdh = ppc_follow_link (h->oh);
10461 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10462 if (ent->addend == rel->r_addend
10463 && ent->plt.offset != (bfd_vma) -1)
10466 return ppc_stub_plt_call;
10469 /* Here, we know we don't have a plt entry. If we don't have a
10470 either a defined function descriptor or a defined entry symbol
10471 in a regular object file, then it is pointless trying to make
10472 any other type of stub. */
10473 if (!is_static_defined (&fdh->elf)
10474 && !is_static_defined (&h->elf))
10475 return ppc_stub_none;
10477 else if (elf_local_got_ents (input_sec->owner) != NULL)
10479 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10480 struct plt_entry **local_plt = (struct plt_entry **)
10481 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10482 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10484 if (local_plt[r_symndx] != NULL)
10486 struct plt_entry *ent;
10488 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10489 if (ent->addend == rel->r_addend
10490 && ent->plt.offset != (bfd_vma) -1)
10493 return ppc_stub_plt_call;
10498 /* Determine where the call point is. */
10499 location = (input_sec->output_offset
10500 + input_sec->output_section->vma
10503 branch_offset = destination - location;
10504 r_type = ELF64_R_TYPE (rel->r_info);
10506 /* Determine if a long branch stub is needed. */
10507 max_branch_offset = 1 << 25;
10508 if (r_type != R_PPC64_REL24)
10509 max_branch_offset = 1 << 15;
10511 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10512 /* We need a stub. Figure out whether a long_branch or plt_branch
10513 is needed later. */
10514 return ppc_stub_long_branch;
10516 return ppc_stub_none;
10519 /* With power7 weakly ordered memory model, it is possible for ld.so
10520 to update a plt entry in one thread and have another thread see a
10521 stale zero toc entry. To avoid this we need some sort of acquire
10522 barrier in the call stub. One solution is to make the load of the
10523 toc word seem to appear to depend on the load of the function entry
10524 word. Another solution is to test for r2 being zero, and branch to
10525 the appropriate glink entry if so.
10527 . fake dep barrier compare
10528 . ld 12,xxx(2) ld 12,xxx(2)
10529 . mtctr 12 mtctr 12
10530 . xor 11,12,12 ld 2,xxx+8(2)
10531 . add 2,2,11 cmpldi 2,0
10532 . ld 2,xxx+8(2) bnectr+
10533 . bctr b <glink_entry>
10535 The solution involving the compare turns out to be faster, so
10536 that's what we use unless the branch won't reach. */
10538 #define ALWAYS_USE_FAKE_DEP 0
10539 #define ALWAYS_EMIT_R2SAVE 0
10541 #define PPC_LO(v) ((v) & 0xffff)
10542 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10543 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10545 static inline unsigned int
10546 plt_stub_size (struct ppc_link_hash_table *htab,
10547 struct ppc_stub_hash_entry *stub_entry,
10550 unsigned size = 12;
10552 if (ALWAYS_EMIT_R2SAVE
10553 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10555 if (PPC_HA (off) != 0)
10560 if (htab->params->plt_static_chain)
10562 if (htab->params->plt_thread_safe
10563 && htab->elf.dynamic_sections_created
10564 && stub_entry->h != NULL
10565 && stub_entry->h->elf.dynindx != -1)
10567 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10570 if (stub_entry->h != NULL
10571 && (stub_entry->h == htab->tls_get_addr_fd
10572 || stub_entry->h == htab->tls_get_addr)
10573 && htab->params->tls_get_addr_opt)
10576 if (ALWAYS_EMIT_R2SAVE
10577 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10583 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10584 then return the padding needed to do so. */
10585 static inline unsigned int
10586 plt_stub_pad (struct ppc_link_hash_table *htab,
10587 struct ppc_stub_hash_entry *stub_entry,
10590 int stub_align = 1 << htab->params->plt_stub_align;
10591 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10592 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10594 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10595 > ((stub_size - 1) & -stub_align))
10596 return stub_align - (stub_off & (stub_align - 1));
10600 /* Build a .plt call stub. */
10602 static inline bfd_byte *
10603 build_plt_stub (struct ppc_link_hash_table *htab,
10604 struct ppc_stub_hash_entry *stub_entry,
10605 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10607 bfd *obfd = htab->params->stub_bfd;
10608 bfd_boolean plt_load_toc = htab->opd_abi;
10609 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10610 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10611 && htab->elf.dynamic_sections_created
10612 && stub_entry->h != NULL
10613 && stub_entry->h->elf.dynindx != -1);
10614 bfd_boolean use_fake_dep = plt_thread_safe;
10615 bfd_vma cmp_branch_off = 0;
10617 if (!ALWAYS_USE_FAKE_DEP
10620 && !((stub_entry->h == htab->tls_get_addr_fd
10621 || stub_entry->h == htab->tls_get_addr)
10622 && htab->params->tls_get_addr_opt))
10624 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10625 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10626 / PLT_ENTRY_SIZE (htab));
10627 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10630 if (pltindex > 32768)
10631 glinkoff += (pltindex - 32768) * 4;
10633 + htab->glink->output_offset
10634 + htab->glink->output_section->vma);
10635 from = (p - stub_entry->group->stub_sec->contents
10636 + 4 * (ALWAYS_EMIT_R2SAVE
10637 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10638 + 4 * (PPC_HA (offset) != 0)
10639 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10640 != PPC_HA (offset))
10641 + 4 * (plt_static_chain != 0)
10643 + stub_entry->group->stub_sec->output_offset
10644 + stub_entry->group->stub_sec->output_section->vma);
10645 cmp_branch_off = to - from;
10646 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10649 if (PPC_HA (offset) != 0)
10653 if (ALWAYS_EMIT_R2SAVE
10654 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10655 r[0].r_offset += 4;
10656 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10657 r[1].r_offset = r[0].r_offset + 4;
10658 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10659 r[1].r_addend = r[0].r_addend;
10662 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10664 r[2].r_offset = r[1].r_offset + 4;
10665 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10666 r[2].r_addend = r[0].r_addend;
10670 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10671 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10672 r[2].r_addend = r[0].r_addend + 8;
10673 if (plt_static_chain)
10675 r[3].r_offset = r[2].r_offset + 4;
10676 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10677 r[3].r_addend = r[0].r_addend + 16;
10682 if (ALWAYS_EMIT_R2SAVE
10683 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10684 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10687 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10688 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10692 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10693 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10696 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10698 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10701 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10706 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10707 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10709 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10710 if (plt_static_chain)
10711 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10718 if (ALWAYS_EMIT_R2SAVE
10719 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10720 r[0].r_offset += 4;
10721 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10724 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10726 r[1].r_offset = r[0].r_offset + 4;
10727 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10728 r[1].r_addend = r[0].r_addend;
10732 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10733 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10734 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10735 if (plt_static_chain)
10737 r[2].r_offset = r[1].r_offset + 4;
10738 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10739 r[2].r_addend = r[0].r_addend + 8;
10744 if (ALWAYS_EMIT_R2SAVE
10745 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10746 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10747 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10749 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10751 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10754 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10759 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10760 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10762 if (plt_static_chain)
10763 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10764 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10767 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10769 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10770 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10771 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10774 bfd_put_32 (obfd, BCTR, p), p += 4;
10778 /* Build a special .plt call stub for __tls_get_addr. */
10780 #define LD_R11_0R3 0xe9630000
10781 #define LD_R12_0R3 0xe9830000
10782 #define MR_R0_R3 0x7c601b78
10783 #define CMPDI_R11_0 0x2c2b0000
10784 #define ADD_R3_R12_R13 0x7c6c6a14
10785 #define BEQLR 0x4d820020
10786 #define MR_R3_R0 0x7c030378
10787 #define STD_R11_0R1 0xf9610000
10788 #define BCTRL 0x4e800421
10789 #define LD_R11_0R1 0xe9610000
10790 #define MTLR_R11 0x7d6803a6
10792 static inline bfd_byte *
10793 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10794 struct ppc_stub_hash_entry *stub_entry,
10795 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10797 bfd *obfd = htab->params->stub_bfd;
10799 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10800 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10801 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10802 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10803 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10804 bfd_put_32 (obfd, BEQLR, p), p += 4;
10805 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10807 r[0].r_offset += 7 * 4;
10808 if (!ALWAYS_EMIT_R2SAVE
10809 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10810 return build_plt_stub (htab, stub_entry, p, offset, r);
10812 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10813 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10816 r[0].r_offset += 2 * 4;
10817 p = build_plt_stub (htab, stub_entry, p, offset, r);
10818 bfd_put_32 (obfd, BCTRL, p - 4);
10820 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10821 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10822 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10823 bfd_put_32 (obfd, BLR, p), p += 4;
10828 static Elf_Internal_Rela *
10829 get_relocs (asection *sec, int count)
10831 Elf_Internal_Rela *relocs;
10832 struct bfd_elf_section_data *elfsec_data;
10834 elfsec_data = elf_section_data (sec);
10835 relocs = elfsec_data->relocs;
10836 if (relocs == NULL)
10838 bfd_size_type relsize;
10839 relsize = sec->reloc_count * sizeof (*relocs);
10840 relocs = bfd_alloc (sec->owner, relsize);
10841 if (relocs == NULL)
10843 elfsec_data->relocs = relocs;
10844 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10845 sizeof (Elf_Internal_Shdr));
10846 if (elfsec_data->rela.hdr == NULL)
10848 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10849 * sizeof (Elf64_External_Rela));
10850 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10851 sec->reloc_count = 0;
10853 relocs += sec->reloc_count;
10854 sec->reloc_count += count;
10859 get_r2off (struct bfd_link_info *info,
10860 struct ppc_stub_hash_entry *stub_entry)
10862 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10863 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10867 /* Support linking -R objects. Get the toc pointer from the
10870 if (!htab->opd_abi)
10872 asection *opd = stub_entry->h->elf.root.u.def.section;
10873 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10875 if (strcmp (opd->name, ".opd") != 0
10876 || opd->reloc_count != 0)
10878 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10879 stub_entry->h->elf.root.root.string);
10880 bfd_set_error (bfd_error_bad_value);
10881 return (bfd_vma) -1;
10883 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10884 return (bfd_vma) -1;
10885 r2off = bfd_get_64 (opd->owner, buf);
10886 r2off -= elf_gp (info->output_bfd);
10888 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10893 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10895 struct ppc_stub_hash_entry *stub_entry;
10896 struct ppc_branch_hash_entry *br_entry;
10897 struct bfd_link_info *info;
10898 struct ppc_link_hash_table *htab;
10903 Elf_Internal_Rela *r;
10906 /* Massage our args to the form they really have. */
10907 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10910 htab = ppc_hash_table (info);
10914 /* Make a note of the offset within the stubs for this entry. */
10915 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10916 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10918 htab->stub_count[stub_entry->stub_type - 1] += 1;
10919 switch (stub_entry->stub_type)
10921 case ppc_stub_long_branch:
10922 case ppc_stub_long_branch_r2off:
10923 /* Branches are relative. This is where we are going to. */
10924 dest = (stub_entry->target_value
10925 + stub_entry->target_section->output_offset
10926 + stub_entry->target_section->output_section->vma);
10927 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10930 /* And this is where we are coming from. */
10931 off -= (stub_entry->stub_offset
10932 + stub_entry->group->stub_sec->output_offset
10933 + stub_entry->group->stub_sec->output_section->vma);
10936 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10938 bfd_vma r2off = get_r2off (info, stub_entry);
10940 if (r2off == (bfd_vma) -1)
10942 htab->stub_error = TRUE;
10945 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10948 if (PPC_HA (r2off) != 0)
10950 bfd_put_32 (htab->params->stub_bfd,
10951 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10955 if (PPC_LO (r2off) != 0)
10957 bfd_put_32 (htab->params->stub_bfd,
10958 ADDI_R2_R2 | PPC_LO (r2off), loc);
10964 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10966 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10968 info->callbacks->einfo
10969 (_("%P: long branch stub `%s' offset overflow\n"),
10970 stub_entry->root.string);
10971 htab->stub_error = TRUE;
10975 if (info->emitrelocations)
10977 r = get_relocs (stub_entry->group->stub_sec, 1);
10980 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10981 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10982 r->r_addend = dest;
10983 if (stub_entry->h != NULL)
10985 struct elf_link_hash_entry **hashes;
10986 unsigned long symndx;
10987 struct ppc_link_hash_entry *h;
10989 hashes = elf_sym_hashes (htab->params->stub_bfd);
10990 if (hashes == NULL)
10992 bfd_size_type hsize;
10994 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10995 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10996 if (hashes == NULL)
10998 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10999 htab->stub_globals = 1;
11001 symndx = htab->stub_globals++;
11003 hashes[symndx] = &h->elf;
11004 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
11005 if (h->oh != NULL && h->oh->is_func)
11006 h = ppc_follow_link (h->oh);
11007 if (h->elf.root.u.def.section != stub_entry->target_section)
11008 /* H is an opd symbol. The addend must be zero. */
11012 off = (h->elf.root.u.def.value
11013 + h->elf.root.u.def.section->output_offset
11014 + h->elf.root.u.def.section->output_section->vma);
11015 r->r_addend -= off;
11021 case ppc_stub_plt_branch:
11022 case ppc_stub_plt_branch_r2off:
11023 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11024 stub_entry->root.string + 9,
11026 if (br_entry == NULL)
11028 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
11029 stub_entry->root.string);
11030 htab->stub_error = TRUE;
11034 dest = (stub_entry->target_value
11035 + stub_entry->target_section->output_offset
11036 + stub_entry->target_section->output_section->vma);
11037 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11038 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11040 bfd_put_64 (htab->brlt->owner, dest,
11041 htab->brlt->contents + br_entry->offset);
11043 if (br_entry->iter == htab->stub_iteration)
11045 br_entry->iter = 0;
11047 if (htab->relbrlt != NULL)
11049 /* Create a reloc for the branch lookup table entry. */
11050 Elf_Internal_Rela rela;
11053 rela.r_offset = (br_entry->offset
11054 + htab->brlt->output_offset
11055 + htab->brlt->output_section->vma);
11056 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11057 rela.r_addend = dest;
11059 rl = htab->relbrlt->contents;
11060 rl += (htab->relbrlt->reloc_count++
11061 * sizeof (Elf64_External_Rela));
11062 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
11064 else if (info->emitrelocations)
11066 r = get_relocs (htab->brlt, 1);
11069 /* brlt, being SEC_LINKER_CREATED does not go through the
11070 normal reloc processing. Symbols and offsets are not
11071 translated from input file to output file form, so
11072 set up the offset per the output file. */
11073 r->r_offset = (br_entry->offset
11074 + htab->brlt->output_offset
11075 + htab->brlt->output_section->vma);
11076 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11077 r->r_addend = dest;
11081 dest = (br_entry->offset
11082 + htab->brlt->output_offset
11083 + htab->brlt->output_section->vma);
11086 - elf_gp (htab->brlt->output_section->owner)
11087 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11089 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11091 info->callbacks->einfo
11092 (_("%P: linkage table error against `%T'\n"),
11093 stub_entry->root.string);
11094 bfd_set_error (bfd_error_bad_value);
11095 htab->stub_error = TRUE;
11099 if (info->emitrelocations)
11101 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11104 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11105 if (bfd_big_endian (info->output_bfd))
11106 r[0].r_offset += 2;
11107 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11108 r[0].r_offset += 4;
11109 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11110 r[0].r_addend = dest;
11111 if (PPC_HA (off) != 0)
11113 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11114 r[1].r_offset = r[0].r_offset + 4;
11115 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11116 r[1].r_addend = r[0].r_addend;
11120 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11122 if (PPC_HA (off) != 0)
11125 bfd_put_32 (htab->params->stub_bfd,
11126 ADDIS_R12_R2 | PPC_HA (off), loc);
11128 bfd_put_32 (htab->params->stub_bfd,
11129 LD_R12_0R12 | PPC_LO (off), loc);
11134 bfd_put_32 (htab->params->stub_bfd,
11135 LD_R12_0R2 | PPC_LO (off), loc);
11140 bfd_vma r2off = get_r2off (info, stub_entry);
11142 if (r2off == (bfd_vma) -1)
11144 htab->stub_error = TRUE;
11148 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11151 if (PPC_HA (off) != 0)
11154 bfd_put_32 (htab->params->stub_bfd,
11155 ADDIS_R12_R2 | PPC_HA (off), loc);
11157 bfd_put_32 (htab->params->stub_bfd,
11158 LD_R12_0R12 | PPC_LO (off), loc);
11161 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11163 if (PPC_HA (r2off) != 0)
11167 bfd_put_32 (htab->params->stub_bfd,
11168 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11170 if (PPC_LO (r2off) != 0)
11174 bfd_put_32 (htab->params->stub_bfd,
11175 ADDI_R2_R2 | PPC_LO (r2off), loc);
11179 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11181 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11184 case ppc_stub_plt_call:
11185 case ppc_stub_plt_call_r2save:
11186 if (stub_entry->h != NULL
11187 && stub_entry->h->is_func_descriptor
11188 && stub_entry->h->oh != NULL)
11190 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11192 /* If the old-ABI "dot-symbol" is undefined make it weak so
11193 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11194 if (fh->elf.root.type == bfd_link_hash_undefined
11195 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11196 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11197 fh->elf.root.type = bfd_link_hash_undefweak;
11200 /* Now build the stub. */
11201 dest = stub_entry->plt_ent->plt.offset & ~1;
11202 if (dest >= (bfd_vma) -2)
11205 plt = htab->elf.splt;
11206 if (!htab->elf.dynamic_sections_created
11207 || stub_entry->h == NULL
11208 || stub_entry->h->elf.dynindx == -1)
11209 plt = htab->elf.iplt;
11211 dest += plt->output_offset + plt->output_section->vma;
11213 if (stub_entry->h == NULL
11214 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11216 Elf_Internal_Rela rela;
11219 rela.r_offset = dest;
11221 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11223 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11224 rela.r_addend = (stub_entry->target_value
11225 + stub_entry->target_section->output_offset
11226 + stub_entry->target_section->output_section->vma);
11228 rl = (htab->elf.irelplt->contents
11229 + (htab->elf.irelplt->reloc_count++
11230 * sizeof (Elf64_External_Rela)));
11231 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11232 stub_entry->plt_ent->plt.offset |= 1;
11233 htab->local_ifunc_resolver = 1;
11237 - elf_gp (plt->output_section->owner)
11238 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11240 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11242 info->callbacks->einfo
11243 /* xgettext:c-format */
11244 (_("%P: linkage table error against `%T'\n"),
11245 stub_entry->h != NULL
11246 ? stub_entry->h->elf.root.root.string
11248 bfd_set_error (bfd_error_bad_value);
11249 htab->stub_error = TRUE;
11253 if (htab->params->plt_stub_align != 0)
11255 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11257 stub_entry->group->stub_sec->size += pad;
11258 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11263 if (info->emitrelocations)
11265 r = get_relocs (stub_entry->group->stub_sec,
11266 ((PPC_HA (off) != 0)
11268 ? 2 + (htab->params->plt_static_chain
11269 && PPC_HA (off + 16) == PPC_HA (off))
11273 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11274 if (bfd_big_endian (info->output_bfd))
11275 r[0].r_offset += 2;
11276 r[0].r_addend = dest;
11278 if (stub_entry->h != NULL
11279 && (stub_entry->h == htab->tls_get_addr_fd
11280 || stub_entry->h == htab->tls_get_addr)
11281 && htab->params->tls_get_addr_opt)
11282 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11284 p = build_plt_stub (htab, stub_entry, loc, off, r);
11288 case ppc_stub_save_res:
11296 stub_entry->group->stub_sec->size += size;
11298 if (htab->params->emit_stub_syms)
11300 struct elf_link_hash_entry *h;
11303 const char *const stub_str[] = { "long_branch",
11304 "long_branch_r2off",
11306 "plt_branch_r2off",
11310 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11311 len2 = strlen (stub_entry->root.string);
11312 name = bfd_malloc (len1 + len2 + 2);
11315 memcpy (name, stub_entry->root.string, 9);
11316 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11317 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11318 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11321 if (h->root.type == bfd_link_hash_new)
11323 h->root.type = bfd_link_hash_defined;
11324 h->root.u.def.section = stub_entry->group->stub_sec;
11325 h->root.u.def.value = stub_entry->stub_offset;
11326 h->ref_regular = 1;
11327 h->def_regular = 1;
11328 h->ref_regular_nonweak = 1;
11329 h->forced_local = 1;
11331 h->root.linker_def = 1;
11338 /* As above, but don't actually build the stub. Just bump offset so
11339 we know stub section sizes, and select plt_branch stubs where
11340 long_branch stubs won't do. */
11343 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11345 struct ppc_stub_hash_entry *stub_entry;
11346 struct bfd_link_info *info;
11347 struct ppc_link_hash_table *htab;
11351 /* Massage our args to the form they really have. */
11352 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11355 htab = ppc_hash_table (info);
11359 if (stub_entry->h != NULL
11360 && stub_entry->h->save_res
11361 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11362 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11364 /* Don't make stubs to out-of-line register save/restore
11365 functions. Instead, emit copies of the functions. */
11366 stub_entry->group->needs_save_res = 1;
11367 stub_entry->stub_type = ppc_stub_save_res;
11371 if (stub_entry->stub_type == ppc_stub_plt_call
11372 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11375 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11376 if (off >= (bfd_vma) -2)
11378 plt = htab->elf.splt;
11379 if (!htab->elf.dynamic_sections_created
11380 || stub_entry->h == NULL
11381 || stub_entry->h->elf.dynindx == -1)
11382 plt = htab->elf.iplt;
11383 off += (plt->output_offset
11384 + plt->output_section->vma
11385 - elf_gp (plt->output_section->owner)
11386 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11388 size = plt_stub_size (htab, stub_entry, off);
11389 if (htab->params->plt_stub_align)
11390 size += plt_stub_pad (htab, stub_entry, off);
11391 if (info->emitrelocations)
11393 stub_entry->group->stub_sec->reloc_count
11394 += ((PPC_HA (off) != 0)
11396 ? 2 + (htab->params->plt_static_chain
11397 && PPC_HA (off + 16) == PPC_HA (off))
11399 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11404 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11407 bfd_vma local_off = 0;
11409 off = (stub_entry->target_value
11410 + stub_entry->target_section->output_offset
11411 + stub_entry->target_section->output_section->vma);
11412 off -= (stub_entry->group->stub_sec->size
11413 + stub_entry->group->stub_sec->output_offset
11414 + stub_entry->group->stub_sec->output_section->vma);
11416 /* Reset the stub type from the plt variant in case we now
11417 can reach with a shorter stub. */
11418 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11419 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11422 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11424 r2off = get_r2off (info, stub_entry);
11425 if (r2off == (bfd_vma) -1)
11427 htab->stub_error = TRUE;
11431 if (PPC_HA (r2off) != 0)
11433 if (PPC_LO (r2off) != 0)
11438 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11440 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11441 Do the same for -R objects without function descriptors. */
11442 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11443 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11445 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11447 struct ppc_branch_hash_entry *br_entry;
11449 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11450 stub_entry->root.string + 9,
11452 if (br_entry == NULL)
11454 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11455 stub_entry->root.string);
11456 htab->stub_error = TRUE;
11460 if (br_entry->iter != htab->stub_iteration)
11462 br_entry->iter = htab->stub_iteration;
11463 br_entry->offset = htab->brlt->size;
11464 htab->brlt->size += 8;
11466 if (htab->relbrlt != NULL)
11467 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11468 else if (info->emitrelocations)
11470 htab->brlt->reloc_count += 1;
11471 htab->brlt->flags |= SEC_RELOC;
11475 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11476 off = (br_entry->offset
11477 + htab->brlt->output_offset
11478 + htab->brlt->output_section->vma
11479 - elf_gp (htab->brlt->output_section->owner)
11480 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11482 if (info->emitrelocations)
11484 stub_entry->group->stub_sec->reloc_count
11485 += 1 + (PPC_HA (off) != 0);
11486 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11489 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11492 if (PPC_HA (off) != 0)
11498 if (PPC_HA (off) != 0)
11501 if (PPC_HA (r2off) != 0)
11503 if (PPC_LO (r2off) != 0)
11507 else if (info->emitrelocations)
11509 stub_entry->group->stub_sec->reloc_count += 1;
11510 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11514 stub_entry->group->stub_sec->size += size;
11518 /* Set up various things so that we can make a list of input sections
11519 for each output section included in the link. Returns -1 on error,
11520 0 when no stubs will be needed, and 1 on success. */
11523 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11527 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11532 htab->sec_info_arr_size = bfd_get_next_section_id ();
11533 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11534 htab->sec_info = bfd_zmalloc (amt);
11535 if (htab->sec_info == NULL)
11538 /* Set toc_off for com, und, abs and ind sections. */
11539 for (id = 0; id < 3; id++)
11540 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11545 /* Set up for first pass at multitoc partitioning. */
11548 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11550 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11552 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11553 htab->toc_bfd = NULL;
11554 htab->toc_first_sec = NULL;
11557 /* The linker repeatedly calls this function for each TOC input section
11558 and linker generated GOT section. Group input bfds such that the toc
11559 within a group is less than 64k in size. */
11562 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11564 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11565 bfd_vma addr, off, limit;
11570 if (!htab->second_toc_pass)
11572 /* Keep track of the first .toc or .got section for this input bfd. */
11573 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11577 htab->toc_bfd = isec->owner;
11578 htab->toc_first_sec = isec;
11581 addr = isec->output_offset + isec->output_section->vma;
11582 off = addr - htab->toc_curr;
11583 limit = 0x80008000;
11584 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11586 if (off + isec->size > limit)
11588 addr = (htab->toc_first_sec->output_offset
11589 + htab->toc_first_sec->output_section->vma);
11590 htab->toc_curr = addr;
11591 htab->toc_curr &= -TOC_BASE_ALIGN;
11594 /* toc_curr is the base address of this toc group. Set elf_gp
11595 for the input section to be the offset relative to the
11596 output toc base plus 0x8000. Making the input elf_gp an
11597 offset allows us to move the toc as a whole without
11598 recalculating input elf_gp. */
11599 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11600 off += TOC_BASE_OFF;
11602 /* Die if someone uses a linker script that doesn't keep input
11603 file .toc and .got together. */
11605 && elf_gp (isec->owner) != 0
11606 && elf_gp (isec->owner) != off)
11609 elf_gp (isec->owner) = off;
11613 /* During the second pass toc_first_sec points to the start of
11614 a toc group, and toc_curr is used to track the old elf_gp.
11615 We use toc_bfd to ensure we only look at each bfd once. */
11616 if (htab->toc_bfd == isec->owner)
11618 htab->toc_bfd = isec->owner;
11620 if (htab->toc_first_sec == NULL
11621 || htab->toc_curr != elf_gp (isec->owner))
11623 htab->toc_curr = elf_gp (isec->owner);
11624 htab->toc_first_sec = isec;
11626 addr = (htab->toc_first_sec->output_offset
11627 + htab->toc_first_sec->output_section->vma);
11628 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11629 elf_gp (isec->owner) = off;
11634 /* Called via elf_link_hash_traverse to merge GOT entries for global
11638 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11640 if (h->root.type == bfd_link_hash_indirect)
11643 merge_got_entries (&h->got.glist);
11648 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11652 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11654 struct got_entry *gent;
11656 if (h->root.type == bfd_link_hash_indirect)
11659 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11660 if (!gent->is_indirect)
11661 allocate_got (h, (struct bfd_link_info *) inf, gent);
11665 /* Called on the first multitoc pass after the last call to
11666 ppc64_elf_next_toc_section. This function removes duplicate GOT
11670 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11672 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11673 struct bfd *ibfd, *ibfd2;
11674 bfd_boolean done_something;
11676 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11678 if (!htab->do_multi_toc)
11681 /* Merge global sym got entries within a toc group. */
11682 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11684 /* And tlsld_got. */
11685 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11687 struct got_entry *ent, *ent2;
11689 if (!is_ppc64_elf (ibfd))
11692 ent = ppc64_tlsld_got (ibfd);
11693 if (!ent->is_indirect
11694 && ent->got.offset != (bfd_vma) -1)
11696 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11698 if (!is_ppc64_elf (ibfd2))
11701 ent2 = ppc64_tlsld_got (ibfd2);
11702 if (!ent2->is_indirect
11703 && ent2->got.offset != (bfd_vma) -1
11704 && elf_gp (ibfd2) == elf_gp (ibfd))
11706 ent2->is_indirect = TRUE;
11707 ent2->got.ent = ent;
11713 /* Zap sizes of got sections. */
11714 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11715 htab->elf.irelplt->size -= htab->got_reli_size;
11716 htab->got_reli_size = 0;
11718 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11720 asection *got, *relgot;
11722 if (!is_ppc64_elf (ibfd))
11725 got = ppc64_elf_tdata (ibfd)->got;
11728 got->rawsize = got->size;
11730 relgot = ppc64_elf_tdata (ibfd)->relgot;
11731 relgot->rawsize = relgot->size;
11736 /* Now reallocate the got, local syms first. We don't need to
11737 allocate section contents again since we never increase size. */
11738 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11740 struct got_entry **lgot_ents;
11741 struct got_entry **end_lgot_ents;
11742 struct plt_entry **local_plt;
11743 struct plt_entry **end_local_plt;
11744 unsigned char *lgot_masks;
11745 bfd_size_type locsymcount;
11746 Elf_Internal_Shdr *symtab_hdr;
11749 if (!is_ppc64_elf (ibfd))
11752 lgot_ents = elf_local_got_ents (ibfd);
11756 symtab_hdr = &elf_symtab_hdr (ibfd);
11757 locsymcount = symtab_hdr->sh_info;
11758 end_lgot_ents = lgot_ents + locsymcount;
11759 local_plt = (struct plt_entry **) end_lgot_ents;
11760 end_local_plt = local_plt + locsymcount;
11761 lgot_masks = (unsigned char *) end_local_plt;
11762 s = ppc64_elf_tdata (ibfd)->got;
11763 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11765 struct got_entry *ent;
11767 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11769 unsigned int ent_size = 8;
11770 unsigned int rel_size = sizeof (Elf64_External_Rela);
11772 ent->got.offset = s->size;
11773 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11778 s->size += ent_size;
11779 if ((*lgot_masks & PLT_IFUNC) != 0)
11781 htab->elf.irelplt->size += rel_size;
11782 htab->got_reli_size += rel_size;
11784 else if (bfd_link_pic (info))
11786 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11787 srel->size += rel_size;
11793 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11795 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11797 struct got_entry *ent;
11799 if (!is_ppc64_elf (ibfd))
11802 ent = ppc64_tlsld_got (ibfd);
11803 if (!ent->is_indirect
11804 && ent->got.offset != (bfd_vma) -1)
11806 asection *s = ppc64_elf_tdata (ibfd)->got;
11807 ent->got.offset = s->size;
11809 if (bfd_link_pic (info))
11811 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11812 srel->size += sizeof (Elf64_External_Rela);
11817 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11818 if (!done_something)
11819 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11823 if (!is_ppc64_elf (ibfd))
11826 got = ppc64_elf_tdata (ibfd)->got;
11829 done_something = got->rawsize != got->size;
11830 if (done_something)
11835 if (done_something)
11836 (*htab->params->layout_sections_again) ();
11838 /* Set up for second pass over toc sections to recalculate elf_gp
11839 on input sections. */
11840 htab->toc_bfd = NULL;
11841 htab->toc_first_sec = NULL;
11842 htab->second_toc_pass = TRUE;
11843 return done_something;
11846 /* Called after second pass of multitoc partitioning. */
11849 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11851 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11853 /* After the second pass, toc_curr tracks the TOC offset used
11854 for code sections below in ppc64_elf_next_input_section. */
11855 htab->toc_curr = TOC_BASE_OFF;
11858 /* No toc references were found in ISEC. If the code in ISEC makes no
11859 calls, then there's no need to use toc adjusting stubs when branching
11860 into ISEC. Actually, indirect calls from ISEC are OK as they will
11861 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11862 needed, and 2 if a cyclical call-graph was found but no other reason
11863 for a stub was detected. If called from the top level, a return of
11864 2 means the same as a return of 0. */
11867 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11871 /* Mark this section as checked. */
11872 isec->call_check_done = 1;
11874 /* We know none of our code bearing sections will need toc stubs. */
11875 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11878 if (isec->size == 0)
11881 if (isec->output_section == NULL)
11885 if (isec->reloc_count != 0)
11887 Elf_Internal_Rela *relstart, *rel;
11888 Elf_Internal_Sym *local_syms;
11889 struct ppc_link_hash_table *htab;
11891 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11892 info->keep_memory);
11893 if (relstart == NULL)
11896 /* Look for branches to outside of this section. */
11898 htab = ppc_hash_table (info);
11902 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11904 enum elf_ppc64_reloc_type r_type;
11905 unsigned long r_symndx;
11906 struct elf_link_hash_entry *h;
11907 struct ppc_link_hash_entry *eh;
11908 Elf_Internal_Sym *sym;
11910 struct _opd_sec_data *opd;
11914 r_type = ELF64_R_TYPE (rel->r_info);
11915 if (r_type != R_PPC64_REL24
11916 && r_type != R_PPC64_REL14
11917 && r_type != R_PPC64_REL14_BRTAKEN
11918 && r_type != R_PPC64_REL14_BRNTAKEN)
11921 r_symndx = ELF64_R_SYM (rel->r_info);
11922 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11929 /* Calls to dynamic lib functions go through a plt call stub
11931 eh = (struct ppc_link_hash_entry *) h;
11933 && (eh->elf.plt.plist != NULL
11935 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11941 if (sym_sec == NULL)
11942 /* Ignore other undefined symbols. */
11945 /* Assume branches to other sections not included in the
11946 link need stubs too, to cover -R and absolute syms. */
11947 if (sym_sec->output_section == NULL)
11954 sym_value = sym->st_value;
11957 if (h->root.type != bfd_link_hash_defined
11958 && h->root.type != bfd_link_hash_defweak)
11960 sym_value = h->root.u.def.value;
11962 sym_value += rel->r_addend;
11964 /* If this branch reloc uses an opd sym, find the code section. */
11965 opd = get_opd_info (sym_sec);
11968 if (h == NULL && opd->adjust != NULL)
11972 adjust = opd->adjust[OPD_NDX (sym_value)];
11974 /* Assume deleted functions won't ever be called. */
11976 sym_value += adjust;
11979 dest = opd_entry_value (sym_sec, sym_value,
11980 &sym_sec, NULL, FALSE);
11981 if (dest == (bfd_vma) -1)
11986 + sym_sec->output_offset
11987 + sym_sec->output_section->vma);
11989 /* Ignore branch to self. */
11990 if (sym_sec == isec)
11993 /* If the called function uses the toc, we need a stub. */
11994 if (sym_sec->has_toc_reloc
11995 || sym_sec->makes_toc_func_call)
12001 /* Assume any branch that needs a long branch stub might in fact
12002 need a plt_branch stub. A plt_branch stub uses r2. */
12003 else if (dest - (isec->output_offset
12004 + isec->output_section->vma
12005 + rel->r_offset) + (1 << 25)
12006 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12014 /* If calling back to a section in the process of being
12015 tested, we can't say for sure that no toc adjusting stubs
12016 are needed, so don't return zero. */
12017 else if (sym_sec->call_check_in_progress)
12020 /* Branches to another section that itself doesn't have any TOC
12021 references are OK. Recursively call ourselves to check. */
12022 else if (!sym_sec->call_check_done)
12026 /* Mark current section as indeterminate, so that other
12027 sections that call back to current won't be marked as
12029 isec->call_check_in_progress = 1;
12030 recur = toc_adjusting_stub_needed (info, sym_sec);
12031 isec->call_check_in_progress = 0;
12042 if (local_syms != NULL
12043 && (elf_symtab_hdr (isec->owner).contents
12044 != (unsigned char *) local_syms))
12046 if (elf_section_data (isec)->relocs != relstart)
12051 && isec->map_head.s != NULL
12052 && (strcmp (isec->output_section->name, ".init") == 0
12053 || strcmp (isec->output_section->name, ".fini") == 0))
12055 if (isec->map_head.s->has_toc_reloc
12056 || isec->map_head.s->makes_toc_func_call)
12058 else if (!isec->map_head.s->call_check_done)
12061 isec->call_check_in_progress = 1;
12062 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
12063 isec->call_check_in_progress = 0;
12070 isec->makes_toc_func_call = 1;
12075 /* The linker repeatedly calls this function for each input section,
12076 in the order that input sections are linked into output sections.
12077 Build lists of input sections to determine groupings between which
12078 we may insert linker stubs. */
12081 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
12083 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12088 if ((isec->output_section->flags & SEC_CODE) != 0
12089 && isec->output_section->id < htab->sec_info_arr_size)
12091 /* This happens to make the list in reverse order,
12092 which is what we want. */
12093 htab->sec_info[isec->id].u.list
12094 = htab->sec_info[isec->output_section->id].u.list;
12095 htab->sec_info[isec->output_section->id].u.list = isec;
12098 if (htab->multi_toc_needed)
12100 /* Analyse sections that aren't already flagged as needing a
12101 valid toc pointer. Exclude .fixup for the linux kernel.
12102 .fixup contains branches, but only back to the function that
12103 hit an exception. */
12104 if (!(isec->has_toc_reloc
12105 || (isec->flags & SEC_CODE) == 0
12106 || strcmp (isec->name, ".fixup") == 0
12107 || isec->call_check_done))
12109 if (toc_adjusting_stub_needed (info, isec) < 0)
12112 /* Make all sections use the TOC assigned for this object file.
12113 This will be wrong for pasted sections; We fix that in
12114 check_pasted_section(). */
12115 if (elf_gp (isec->owner) != 0)
12116 htab->toc_curr = elf_gp (isec->owner);
12119 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12123 /* Check that all .init and .fini sections use the same toc, if they
12124 have toc relocs. */
12127 check_pasted_section (struct bfd_link_info *info, const char *name)
12129 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12133 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12134 bfd_vma toc_off = 0;
12137 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12138 if (i->has_toc_reloc)
12141 toc_off = htab->sec_info[i->id].toc_off;
12142 else if (toc_off != htab->sec_info[i->id].toc_off)
12147 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12148 if (i->makes_toc_func_call)
12150 toc_off = htab->sec_info[i->id].toc_off;
12154 /* Make sure the whole pasted function uses the same toc offset. */
12156 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12157 htab->sec_info[i->id].toc_off = toc_off;
12163 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12165 return (check_pasted_section (info, ".init")
12166 & check_pasted_section (info, ".fini"));
12169 /* See whether we can group stub sections together. Grouping stub
12170 sections may result in fewer stubs. More importantly, we need to
12171 put all .init* and .fini* stubs at the beginning of the .init or
12172 .fini output sections respectively, because glibc splits the
12173 _init and _fini functions into multiple parts. Putting a stub in
12174 the middle of a function is not a good idea. */
12177 group_sections (struct bfd_link_info *info,
12178 bfd_size_type stub_group_size,
12179 bfd_boolean stubs_always_before_branch)
12181 struct ppc_link_hash_table *htab;
12183 bfd_boolean suppress_size_errors;
12185 htab = ppc_hash_table (info);
12189 suppress_size_errors = FALSE;
12190 if (stub_group_size == 1)
12192 /* Default values. */
12193 if (stubs_always_before_branch)
12194 stub_group_size = 0x1e00000;
12196 stub_group_size = 0x1c00000;
12197 suppress_size_errors = TRUE;
12200 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12204 if (osec->id >= htab->sec_info_arr_size)
12207 tail = htab->sec_info[osec->id].u.list;
12208 while (tail != NULL)
12212 bfd_size_type total;
12213 bfd_boolean big_sec;
12215 struct map_stub *group;
12216 bfd_size_type group_size;
12219 total = tail->size;
12220 group_size = (ppc64_elf_section_data (tail) != NULL
12221 && ppc64_elf_section_data (tail)->has_14bit_branch
12222 ? stub_group_size >> 10 : stub_group_size);
12224 big_sec = total > group_size;
12225 if (big_sec && !suppress_size_errors)
12226 /* xgettext:c-format */
12227 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12228 tail->owner, tail);
12229 curr_toc = htab->sec_info[tail->id].toc_off;
12231 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12232 && ((total += curr->output_offset - prev->output_offset)
12233 < (ppc64_elf_section_data (prev) != NULL
12234 && ppc64_elf_section_data (prev)->has_14bit_branch
12235 ? (group_size = stub_group_size >> 10) : group_size))
12236 && htab->sec_info[prev->id].toc_off == curr_toc)
12239 /* OK, the size from the start of CURR to the end is less
12240 than group_size and thus can be handled by one stub
12241 section. (or the tail section is itself larger than
12242 group_size, in which case we may be toast.) We should
12243 really be keeping track of the total size of stubs added
12244 here, as stubs contribute to the final output section
12245 size. That's a little tricky, and this way will only
12246 break if stubs added make the total size more than 2^25,
12247 ie. for the default stub_group_size, if stubs total more
12248 than 2097152 bytes, or nearly 75000 plt call stubs. */
12249 group = bfd_alloc (curr->owner, sizeof (*group));
12252 group->link_sec = curr;
12253 group->stub_sec = NULL;
12254 group->needs_save_res = 0;
12255 group->next = htab->group;
12256 htab->group = group;
12259 prev = htab->sec_info[tail->id].u.list;
12260 /* Set up this stub group. */
12261 htab->sec_info[tail->id].u.group = group;
12263 while (tail != curr && (tail = prev) != NULL);
12265 /* But wait, there's more! Input sections up to group_size
12266 bytes before the stub section can be handled by it too.
12267 Don't do this if we have a really large section after the
12268 stubs, as adding more stubs increases the chance that
12269 branches may not reach into the stub section. */
12270 if (!stubs_always_before_branch && !big_sec)
12273 while (prev != NULL
12274 && ((total += tail->output_offset - prev->output_offset)
12275 < (ppc64_elf_section_data (prev) != NULL
12276 && ppc64_elf_section_data (prev)->has_14bit_branch
12277 ? (group_size = stub_group_size >> 10) : group_size))
12278 && htab->sec_info[prev->id].toc_off == curr_toc)
12281 prev = htab->sec_info[tail->id].u.list;
12282 htab->sec_info[tail->id].u.group = group;
12291 static const unsigned char glink_eh_frame_cie[] =
12293 0, 0, 0, 16, /* length. */
12294 0, 0, 0, 0, /* id. */
12295 1, /* CIE version. */
12296 'z', 'R', 0, /* Augmentation string. */
12297 4, /* Code alignment. */
12298 0x78, /* Data alignment. */
12300 1, /* Augmentation size. */
12301 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12302 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12305 /* Stripping output sections is normally done before dynamic section
12306 symbols have been allocated. This function is called later, and
12307 handles cases like htab->brlt which is mapped to its own output
12311 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12313 if (isec->size == 0
12314 && isec->output_section->size == 0
12315 && !(isec->output_section->flags & SEC_KEEP)
12316 && !bfd_section_removed_from_list (info->output_bfd,
12317 isec->output_section)
12318 && elf_section_data (isec->output_section)->dynindx == 0)
12320 isec->output_section->flags |= SEC_EXCLUDE;
12321 bfd_section_list_remove (info->output_bfd, isec->output_section);
12322 info->output_bfd->section_count--;
12326 /* Determine and set the size of the stub section for a final link.
12328 The basic idea here is to examine all the relocations looking for
12329 PC-relative calls to a target that is unreachable with a "bl"
12333 ppc64_elf_size_stubs (struct bfd_link_info *info)
12335 bfd_size_type stub_group_size;
12336 bfd_boolean stubs_always_before_branch;
12337 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12342 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12343 htab->params->plt_thread_safe = 1;
12344 if (!htab->opd_abi)
12345 htab->params->plt_thread_safe = 0;
12346 else if (htab->params->plt_thread_safe == -1)
12348 static const char *const thread_starter[] =
12352 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12354 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12355 "mq_notify", "create_timer",
12360 "GOMP_parallel_start",
12361 "GOMP_parallel_loop_static",
12362 "GOMP_parallel_loop_static_start",
12363 "GOMP_parallel_loop_dynamic",
12364 "GOMP_parallel_loop_dynamic_start",
12365 "GOMP_parallel_loop_guided",
12366 "GOMP_parallel_loop_guided_start",
12367 "GOMP_parallel_loop_runtime",
12368 "GOMP_parallel_loop_runtime_start",
12369 "GOMP_parallel_sections",
12370 "GOMP_parallel_sections_start",
12376 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12378 struct elf_link_hash_entry *h;
12379 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12380 FALSE, FALSE, TRUE);
12381 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12382 if (htab->params->plt_thread_safe)
12386 stubs_always_before_branch = htab->params->group_size < 0;
12387 if (htab->params->group_size < 0)
12388 stub_group_size = -htab->params->group_size;
12390 stub_group_size = htab->params->group_size;
12392 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12395 #define STUB_SHRINK_ITER 20
12396 /* Loop until no stubs added. After iteration 20 of this loop we may
12397 exit on a stub section shrinking. This is to break out of a
12398 pathological case where adding stubs on one iteration decreases
12399 section gaps (perhaps due to alignment), which then requires
12400 fewer or smaller stubs on the next iteration. */
12405 unsigned int bfd_indx;
12406 struct map_stub *group;
12407 asection *stub_sec;
12409 htab->stub_iteration += 1;
12411 for (input_bfd = info->input_bfds, bfd_indx = 0;
12413 input_bfd = input_bfd->link.next, bfd_indx++)
12415 Elf_Internal_Shdr *symtab_hdr;
12417 Elf_Internal_Sym *local_syms = NULL;
12419 if (!is_ppc64_elf (input_bfd))
12422 /* We'll need the symbol table in a second. */
12423 symtab_hdr = &elf_symtab_hdr (input_bfd);
12424 if (symtab_hdr->sh_info == 0)
12427 /* Walk over each section attached to the input bfd. */
12428 for (section = input_bfd->sections;
12430 section = section->next)
12432 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12434 /* If there aren't any relocs, then there's nothing more
12436 if ((section->flags & SEC_RELOC) == 0
12437 || (section->flags & SEC_ALLOC) == 0
12438 || (section->flags & SEC_LOAD) == 0
12439 || (section->flags & SEC_CODE) == 0
12440 || section->reloc_count == 0)
12443 /* If this section is a link-once section that will be
12444 discarded, then don't create any stubs. */
12445 if (section->output_section == NULL
12446 || section->output_section->owner != info->output_bfd)
12449 /* Get the relocs. */
12451 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12452 info->keep_memory);
12453 if (internal_relocs == NULL)
12454 goto error_ret_free_local;
12456 /* Now examine each relocation. */
12457 irela = internal_relocs;
12458 irelaend = irela + section->reloc_count;
12459 for (; irela < irelaend; irela++)
12461 enum elf_ppc64_reloc_type r_type;
12462 unsigned int r_indx;
12463 enum ppc_stub_type stub_type;
12464 struct ppc_stub_hash_entry *stub_entry;
12465 asection *sym_sec, *code_sec;
12466 bfd_vma sym_value, code_value;
12467 bfd_vma destination;
12468 unsigned long local_off;
12469 bfd_boolean ok_dest;
12470 struct ppc_link_hash_entry *hash;
12471 struct ppc_link_hash_entry *fdh;
12472 struct elf_link_hash_entry *h;
12473 Elf_Internal_Sym *sym;
12475 const asection *id_sec;
12476 struct _opd_sec_data *opd;
12477 struct plt_entry *plt_ent;
12479 r_type = ELF64_R_TYPE (irela->r_info);
12480 r_indx = ELF64_R_SYM (irela->r_info);
12482 if (r_type >= R_PPC64_max)
12484 bfd_set_error (bfd_error_bad_value);
12485 goto error_ret_free_internal;
12488 /* Only look for stubs on branch instructions. */
12489 if (r_type != R_PPC64_REL24
12490 && r_type != R_PPC64_REL14
12491 && r_type != R_PPC64_REL14_BRTAKEN
12492 && r_type != R_PPC64_REL14_BRNTAKEN)
12495 /* Now determine the call target, its name, value,
12497 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12498 r_indx, input_bfd))
12499 goto error_ret_free_internal;
12500 hash = (struct ppc_link_hash_entry *) h;
12507 sym_value = sym->st_value;
12508 if (sym_sec != NULL
12509 && sym_sec->output_section != NULL)
12512 else if (hash->elf.root.type == bfd_link_hash_defined
12513 || hash->elf.root.type == bfd_link_hash_defweak)
12515 sym_value = hash->elf.root.u.def.value;
12516 if (sym_sec->output_section != NULL)
12519 else if (hash->elf.root.type == bfd_link_hash_undefweak
12520 || hash->elf.root.type == bfd_link_hash_undefined)
12522 /* Recognise an old ABI func code entry sym, and
12523 use the func descriptor sym instead if it is
12525 if (hash->elf.root.root.string[0] == '.'
12526 && hash->oh != NULL)
12528 fdh = ppc_follow_link (hash->oh);
12529 if (fdh->elf.root.type == bfd_link_hash_defined
12530 || fdh->elf.root.type == bfd_link_hash_defweak)
12532 sym_sec = fdh->elf.root.u.def.section;
12533 sym_value = fdh->elf.root.u.def.value;
12534 if (sym_sec->output_section != NULL)
12543 bfd_set_error (bfd_error_bad_value);
12544 goto error_ret_free_internal;
12551 sym_value += irela->r_addend;
12552 destination = (sym_value
12553 + sym_sec->output_offset
12554 + sym_sec->output_section->vma);
12555 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12560 code_sec = sym_sec;
12561 code_value = sym_value;
12562 opd = get_opd_info (sym_sec);
12567 if (hash == NULL && opd->adjust != NULL)
12569 long adjust = opd->adjust[OPD_NDX (sym_value)];
12572 code_value += adjust;
12573 sym_value += adjust;
12575 dest = opd_entry_value (sym_sec, sym_value,
12576 &code_sec, &code_value, FALSE);
12577 if (dest != (bfd_vma) -1)
12579 destination = dest;
12582 /* Fixup old ABI sym to point at code
12584 hash->elf.root.type = bfd_link_hash_defweak;
12585 hash->elf.root.u.def.section = code_sec;
12586 hash->elf.root.u.def.value = code_value;
12591 /* Determine what (if any) linker stub is needed. */
12593 stub_type = ppc_type_of_stub (section, irela, &hash,
12594 &plt_ent, destination,
12597 if (stub_type != ppc_stub_plt_call)
12599 /* Check whether we need a TOC adjusting stub.
12600 Since the linker pastes together pieces from
12601 different object files when creating the
12602 _init and _fini functions, it may be that a
12603 call to what looks like a local sym is in
12604 fact a call needing a TOC adjustment. */
12605 if (code_sec != NULL
12606 && code_sec->output_section != NULL
12607 && (htab->sec_info[code_sec->id].toc_off
12608 != htab->sec_info[section->id].toc_off)
12609 && (code_sec->has_toc_reloc
12610 || code_sec->makes_toc_func_call))
12611 stub_type = ppc_stub_long_branch_r2off;
12614 if (stub_type == ppc_stub_none)
12617 /* __tls_get_addr calls might be eliminated. */
12618 if (stub_type != ppc_stub_plt_call
12620 && (hash == htab->tls_get_addr
12621 || hash == htab->tls_get_addr_fd)
12622 && section->has_tls_reloc
12623 && irela != internal_relocs)
12625 /* Get tls info. */
12626 unsigned char *tls_mask;
12628 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12629 irela - 1, input_bfd))
12630 goto error_ret_free_internal;
12631 if (*tls_mask != 0)
12635 if (stub_type == ppc_stub_plt_call)
12638 && htab->params->plt_localentry0 != 0
12639 && is_elfv2_localentry0 (&hash->elf))
12640 htab->has_plt_localentry0 = 1;
12641 else if (irela + 1 < irelaend
12642 && irela[1].r_offset == irela->r_offset + 4
12643 && (ELF64_R_TYPE (irela[1].r_info)
12644 == R_PPC64_TOCSAVE))
12646 if (!tocsave_find (htab, INSERT,
12647 &local_syms, irela + 1, input_bfd))
12648 goto error_ret_free_internal;
12651 stub_type = ppc_stub_plt_call_r2save;
12654 /* Support for grouping stub sections. */
12655 id_sec = htab->sec_info[section->id].u.group->link_sec;
12657 /* Get the name of this stub. */
12658 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12660 goto error_ret_free_internal;
12662 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12663 stub_name, FALSE, FALSE);
12664 if (stub_entry != NULL)
12666 /* The proper stub has already been created. */
12668 if (stub_type == ppc_stub_plt_call_r2save)
12669 stub_entry->stub_type = stub_type;
12673 stub_entry = ppc_add_stub (stub_name, section, info);
12674 if (stub_entry == NULL)
12677 error_ret_free_internal:
12678 if (elf_section_data (section)->relocs == NULL)
12679 free (internal_relocs);
12680 error_ret_free_local:
12681 if (local_syms != NULL
12682 && (symtab_hdr->contents
12683 != (unsigned char *) local_syms))
12688 stub_entry->stub_type = stub_type;
12689 if (stub_type != ppc_stub_plt_call
12690 && stub_type != ppc_stub_plt_call_r2save)
12692 stub_entry->target_value = code_value;
12693 stub_entry->target_section = code_sec;
12697 stub_entry->target_value = sym_value;
12698 stub_entry->target_section = sym_sec;
12700 stub_entry->h = hash;
12701 stub_entry->plt_ent = plt_ent;
12702 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12704 if (stub_entry->h != NULL)
12705 htab->stub_globals += 1;
12708 /* We're done with the internal relocs, free them. */
12709 if (elf_section_data (section)->relocs != internal_relocs)
12710 free (internal_relocs);
12713 if (local_syms != NULL
12714 && symtab_hdr->contents != (unsigned char *) local_syms)
12716 if (!info->keep_memory)
12719 symtab_hdr->contents = (unsigned char *) local_syms;
12723 /* We may have added some stubs. Find out the new size of the
12725 for (stub_sec = htab->params->stub_bfd->sections;
12727 stub_sec = stub_sec->next)
12728 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12730 if (htab->stub_iteration <= STUB_SHRINK_ITER
12731 || stub_sec->rawsize < stub_sec->size)
12732 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12733 stub_sec->rawsize = stub_sec->size;
12734 stub_sec->size = 0;
12735 stub_sec->reloc_count = 0;
12736 stub_sec->flags &= ~SEC_RELOC;
12739 htab->brlt->size = 0;
12740 htab->brlt->reloc_count = 0;
12741 htab->brlt->flags &= ~SEC_RELOC;
12742 if (htab->relbrlt != NULL)
12743 htab->relbrlt->size = 0;
12745 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12747 for (group = htab->group; group != NULL; group = group->next)
12748 if (group->needs_save_res)
12749 group->stub_sec->size += htab->sfpr->size;
12751 if (info->emitrelocations
12752 && htab->glink != NULL && htab->glink->size != 0)
12754 htab->glink->reloc_count = 1;
12755 htab->glink->flags |= SEC_RELOC;
12758 if (htab->glink_eh_frame != NULL
12759 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12760 && htab->glink_eh_frame->output_section->size != 0)
12762 size_t size = 0, align = 4;
12764 for (stub_sec = htab->params->stub_bfd->sections;
12766 stub_sec = stub_sec->next)
12767 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12768 size += (17 + align - 1) & -align;
12769 if (htab->glink != NULL && htab->glink->size != 0)
12770 size += (24 + align - 1) & -align;
12772 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12773 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12774 size = (size + align - 1) & -align;
12775 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12776 htab->glink_eh_frame->size = size;
12779 if (htab->params->plt_stub_align != 0)
12780 for (stub_sec = htab->params->stub_bfd->sections;
12782 stub_sec = stub_sec->next)
12783 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12784 stub_sec->size = ((stub_sec->size
12785 + (1 << htab->params->plt_stub_align) - 1)
12786 & -(1 << htab->params->plt_stub_align));
12788 for (stub_sec = htab->params->stub_bfd->sections;
12790 stub_sec = stub_sec->next)
12791 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12792 && stub_sec->rawsize != stub_sec->size
12793 && (htab->stub_iteration <= STUB_SHRINK_ITER
12794 || stub_sec->rawsize < stub_sec->size))
12797 if (stub_sec == NULL
12798 && (htab->glink_eh_frame == NULL
12799 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12802 /* Ask the linker to do its stuff. */
12803 (*htab->params->layout_sections_again) ();
12806 if (htab->glink_eh_frame != NULL
12807 && htab->glink_eh_frame->size != 0)
12810 bfd_byte *p, *last_fde;
12811 size_t last_fde_len, size, align, pad;
12812 asection *stub_sec;
12814 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12817 htab->glink_eh_frame->contents = p;
12821 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12822 /* CIE length (rewrite in case little-endian). */
12823 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12824 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12825 p += last_fde_len + 4;
12827 for (stub_sec = htab->params->stub_bfd->sections;
12829 stub_sec = stub_sec->next)
12830 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12833 last_fde_len = ((17 + align - 1) & -align) - 4;
12835 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12838 val = p - htab->glink_eh_frame->contents;
12839 bfd_put_32 (htab->elf.dynobj, val, p);
12841 /* Offset to stub section, written later. */
12843 /* stub section size. */
12844 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12846 /* Augmentation. */
12849 p += ((17 + align - 1) & -align) - 17;
12851 if (htab->glink != NULL && htab->glink->size != 0)
12854 last_fde_len = ((24 + align - 1) & -align) - 4;
12856 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12859 val = p - htab->glink_eh_frame->contents;
12860 bfd_put_32 (htab->elf.dynobj, val, p);
12862 /* Offset to .glink, written later. */
12865 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12867 /* Augmentation. */
12870 *p++ = DW_CFA_advance_loc + 1;
12871 *p++ = DW_CFA_register;
12873 *p++ = htab->opd_abi ? 12 : 0;
12874 *p++ = DW_CFA_advance_loc + 4;
12875 *p++ = DW_CFA_restore_extended;
12877 p += ((24 + align - 1) & -align) - 24;
12879 /* Subsume any padding into the last FDE if user .eh_frame
12880 sections are aligned more than glink_eh_frame. Otherwise any
12881 zero padding will be seen as a terminator. */
12882 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12883 size = p - htab->glink_eh_frame->contents;
12884 pad = ((size + align - 1) & -align) - size;
12885 htab->glink_eh_frame->size = size + pad;
12886 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12889 maybe_strip_output (info, htab->brlt);
12890 if (htab->glink_eh_frame != NULL)
12891 maybe_strip_output (info, htab->glink_eh_frame);
12896 /* Called after we have determined section placement. If sections
12897 move, we'll be called again. Provide a value for TOCstart. */
12900 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12903 bfd_vma TOCstart, adjust;
12907 struct elf_link_hash_entry *h;
12908 struct elf_link_hash_table *htab = elf_hash_table (info);
12910 if (is_elf_hash_table (htab)
12911 && htab->hgot != NULL)
12915 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12916 if (is_elf_hash_table (htab))
12920 && h->root.type == bfd_link_hash_defined
12921 && !h->root.linker_def
12922 && (!is_elf_hash_table (htab)
12923 || h->def_regular))
12925 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12926 + h->root.u.def.section->output_offset
12927 + h->root.u.def.section->output_section->vma);
12928 _bfd_set_gp_value (obfd, TOCstart);
12933 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12934 order. The TOC starts where the first of these sections starts. */
12935 s = bfd_get_section_by_name (obfd, ".got");
12936 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12937 s = bfd_get_section_by_name (obfd, ".toc");
12938 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12939 s = bfd_get_section_by_name (obfd, ".tocbss");
12940 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12941 s = bfd_get_section_by_name (obfd, ".plt");
12942 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12944 /* This may happen for
12945 o references to TOC base (SYM@toc / TOC[tc0]) without a
12947 o bad linker script
12948 o --gc-sections and empty TOC sections
12950 FIXME: Warn user? */
12952 /* Look for a likely section. We probably won't even be
12954 for (s = obfd->sections; s != NULL; s = s->next)
12955 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12957 == (SEC_ALLOC | SEC_SMALL_DATA))
12960 for (s = obfd->sections; s != NULL; s = s->next)
12961 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12962 == (SEC_ALLOC | SEC_SMALL_DATA))
12965 for (s = obfd->sections; s != NULL; s = s->next)
12966 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12970 for (s = obfd->sections; s != NULL; s = s->next)
12971 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12977 TOCstart = s->output_section->vma + s->output_offset;
12979 /* Force alignment. */
12980 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12981 TOCstart -= adjust;
12982 _bfd_set_gp_value (obfd, TOCstart);
12984 if (info != NULL && s != NULL)
12986 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12990 if (htab->elf.hgot != NULL)
12992 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12993 htab->elf.hgot->root.u.def.section = s;
12998 struct bfd_link_hash_entry *bh = NULL;
12999 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
13000 s, TOC_BASE_OFF - adjust,
13001 NULL, FALSE, FALSE, &bh);
13007 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13008 write out any global entry stubs. */
13011 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
13013 struct bfd_link_info *info;
13014 struct ppc_link_hash_table *htab;
13015 struct plt_entry *pent;
13018 if (h->root.type == bfd_link_hash_indirect)
13021 if (!h->pointer_equality_needed)
13024 if (h->def_regular)
13028 htab = ppc_hash_table (info);
13033 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
13034 if (pent->plt.offset != (bfd_vma) -1
13035 && pent->addend == 0)
13041 p = s->contents + h->root.u.def.value;
13042 plt = htab->elf.splt;
13043 if (!htab->elf.dynamic_sections_created
13044 || h->dynindx == -1)
13045 plt = htab->elf.iplt;
13046 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
13047 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
13049 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
13051 info->callbacks->einfo
13052 (_("%P: linkage table error against `%T'\n"),
13053 h->root.root.string);
13054 bfd_set_error (bfd_error_bad_value);
13055 htab->stub_error = TRUE;
13058 htab->stub_count[ppc_stub_global_entry - 1] += 1;
13059 if (htab->params->emit_stub_syms)
13061 size_t len = strlen (h->root.root.string);
13062 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
13067 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
13068 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13071 if (h->root.type == bfd_link_hash_new)
13073 h->root.type = bfd_link_hash_defined;
13074 h->root.u.def.section = s;
13075 h->root.u.def.value = p - s->contents;
13076 h->ref_regular = 1;
13077 h->def_regular = 1;
13078 h->ref_regular_nonweak = 1;
13079 h->forced_local = 1;
13081 h->root.linker_def = 1;
13085 if (PPC_HA (off) != 0)
13087 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13090 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13092 bfd_put_32 (s->owner, MTCTR_R12, p);
13094 bfd_put_32 (s->owner, BCTR, p);
13100 /* Build all the stubs associated with the current output file.
13101 The stubs are kept in a hash table attached to the main linker
13102 hash table. This function is called via gldelf64ppc_finish. */
13105 ppc64_elf_build_stubs (struct bfd_link_info *info,
13108 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13109 struct map_stub *group;
13110 asection *stub_sec;
13112 int stub_sec_count = 0;
13117 /* Allocate memory to hold the linker stubs. */
13118 for (stub_sec = htab->params->stub_bfd->sections;
13120 stub_sec = stub_sec->next)
13121 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
13122 && stub_sec->size != 0)
13124 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13125 if (stub_sec->contents == NULL)
13127 stub_sec->size = 0;
13130 if (htab->glink != NULL && htab->glink->size != 0)
13135 /* Build the .glink plt call stub. */
13136 if (htab->params->emit_stub_syms)
13138 struct elf_link_hash_entry *h;
13139 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13140 TRUE, FALSE, FALSE);
13143 if (h->root.type == bfd_link_hash_new)
13145 h->root.type = bfd_link_hash_defined;
13146 h->root.u.def.section = htab->glink;
13147 h->root.u.def.value = 8;
13148 h->ref_regular = 1;
13149 h->def_regular = 1;
13150 h->ref_regular_nonweak = 1;
13151 h->forced_local = 1;
13153 h->root.linker_def = 1;
13156 plt0 = (htab->elf.splt->output_section->vma
13157 + htab->elf.splt->output_offset
13159 if (info->emitrelocations)
13161 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13164 r->r_offset = (htab->glink->output_offset
13165 + htab->glink->output_section->vma);
13166 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13167 r->r_addend = plt0;
13169 p = htab->glink->contents;
13170 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13171 bfd_put_64 (htab->glink->owner, plt0, p);
13175 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13177 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13179 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13181 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13183 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13185 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13187 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13189 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13191 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13193 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13198 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13200 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13202 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13204 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13206 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13208 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13210 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13212 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13214 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13216 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13218 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13220 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13222 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13225 bfd_put_32 (htab->glink->owner, BCTR, p);
13227 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13229 bfd_put_32 (htab->glink->owner, NOP, p);
13233 /* Build the .glink lazy link call stubs. */
13235 while (p < htab->glink->contents + htab->glink->rawsize)
13241 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13246 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13248 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13253 bfd_put_32 (htab->glink->owner,
13254 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13259 /* Build .glink global entry stubs. */
13260 if (htab->glink->size > htab->glink->rawsize)
13261 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13264 if (htab->brlt != NULL && htab->brlt->size != 0)
13266 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13268 if (htab->brlt->contents == NULL)
13271 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13273 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13274 htab->relbrlt->size);
13275 if (htab->relbrlt->contents == NULL)
13279 /* Build the stubs as directed by the stub hash table. */
13280 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13282 for (group = htab->group; group != NULL; group = group->next)
13283 if (group->needs_save_res)
13285 stub_sec = group->stub_sec;
13286 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13288 if (htab->params->emit_stub_syms)
13292 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13293 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13296 stub_sec->size += htab->sfpr->size;
13299 if (htab->relbrlt != NULL)
13300 htab->relbrlt->reloc_count = 0;
13302 if (htab->params->plt_stub_align != 0)
13303 for (stub_sec = htab->params->stub_bfd->sections;
13305 stub_sec = stub_sec->next)
13306 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13307 stub_sec->size = ((stub_sec->size
13308 + (1 << htab->params->plt_stub_align) - 1)
13309 & -(1 << htab->params->plt_stub_align));
13311 for (stub_sec = htab->params->stub_bfd->sections;
13313 stub_sec = stub_sec->next)
13314 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13316 stub_sec_count += 1;
13317 if (stub_sec->rawsize != stub_sec->size
13318 && (htab->stub_iteration <= STUB_SHRINK_ITER
13319 || stub_sec->rawsize < stub_sec->size))
13323 /* Note that the glink_eh_frame check here is not only testing that
13324 the generated size matched the calculated size but also that
13325 bfd_elf_discard_info didn't make any changes to the section. */
13326 if (stub_sec != NULL
13327 || (htab->glink_eh_frame != NULL
13328 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13330 htab->stub_error = TRUE;
13331 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13334 if (htab->stub_error)
13339 *stats = bfd_malloc (500);
13340 if (*stats == NULL)
13343 sprintf (*stats, _("linker stubs in %u group%s\n"
13345 " toc adjust %lu\n"
13346 " long branch %lu\n"
13347 " long toc adj %lu\n"
13349 " plt call toc %lu\n"
13350 " global entry %lu"),
13352 stub_sec_count == 1 ? "" : "s",
13353 htab->stub_count[ppc_stub_long_branch - 1],
13354 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13355 htab->stub_count[ppc_stub_plt_branch - 1],
13356 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13357 htab->stub_count[ppc_stub_plt_call - 1],
13358 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13359 htab->stub_count[ppc_stub_global_entry - 1]);
13364 /* What to do when ld finds relocations against symbols defined in
13365 discarded sections. */
13367 static unsigned int
13368 ppc64_elf_action_discarded (asection *sec)
13370 if (strcmp (".opd", sec->name) == 0)
13373 if (strcmp (".toc", sec->name) == 0)
13376 if (strcmp (".toc1", sec->name) == 0)
13379 return _bfd_elf_default_action_discarded (sec);
13382 /* The RELOCATE_SECTION function is called by the ELF backend linker
13383 to handle the relocations for a section.
13385 The relocs are always passed as Rela structures; if the section
13386 actually uses Rel structures, the r_addend field will always be
13389 This function is responsible for adjust the section contents as
13390 necessary, and (if using Rela relocs and generating a
13391 relocatable output file) adjusting the reloc addend as
13394 This function does not have to worry about setting the reloc
13395 address or the reloc symbol index.
13397 LOCAL_SYMS is a pointer to the swapped in local symbols.
13399 LOCAL_SECTIONS is an array giving the section in the input file
13400 corresponding to the st_shndx field of each local symbol.
13402 The global hash table entry for the global symbols can be found
13403 via elf_sym_hashes (input_bfd).
13405 When generating relocatable output, this function must handle
13406 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13407 going to be the section symbol corresponding to the output
13408 section, which means that the addend must be adjusted
13412 ppc64_elf_relocate_section (bfd *output_bfd,
13413 struct bfd_link_info *info,
13415 asection *input_section,
13416 bfd_byte *contents,
13417 Elf_Internal_Rela *relocs,
13418 Elf_Internal_Sym *local_syms,
13419 asection **local_sections)
13421 struct ppc_link_hash_table *htab;
13422 Elf_Internal_Shdr *symtab_hdr;
13423 struct elf_link_hash_entry **sym_hashes;
13424 Elf_Internal_Rela *rel;
13425 Elf_Internal_Rela *wrel;
13426 Elf_Internal_Rela *relend;
13427 Elf_Internal_Rela outrel;
13429 struct got_entry **local_got_ents;
13431 bfd_boolean ret = TRUE;
13432 bfd_boolean is_opd;
13433 /* Assume 'at' branch hints. */
13434 bfd_boolean is_isa_v2 = TRUE;
13435 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13437 /* Initialize howto table if needed. */
13438 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13441 htab = ppc_hash_table (info);
13445 /* Don't relocate stub sections. */
13446 if (input_section->owner == htab->params->stub_bfd)
13449 BFD_ASSERT (is_ppc64_elf (input_bfd));
13451 local_got_ents = elf_local_got_ents (input_bfd);
13452 TOCstart = elf_gp (output_bfd);
13453 symtab_hdr = &elf_symtab_hdr (input_bfd);
13454 sym_hashes = elf_sym_hashes (input_bfd);
13455 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13457 rel = wrel = relocs;
13458 relend = relocs + input_section->reloc_count;
13459 for (; rel < relend; wrel++, rel++)
13461 enum elf_ppc64_reloc_type r_type;
13463 bfd_reloc_status_type r;
13464 Elf_Internal_Sym *sym;
13466 struct elf_link_hash_entry *h_elf;
13467 struct ppc_link_hash_entry *h;
13468 struct ppc_link_hash_entry *fdh;
13469 const char *sym_name;
13470 unsigned long r_symndx, toc_symndx;
13471 bfd_vma toc_addend;
13472 unsigned char tls_mask, tls_gd, tls_type;
13473 unsigned char sym_type;
13474 bfd_vma relocation;
13475 bfd_boolean unresolved_reloc;
13476 bfd_boolean warned;
13477 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13480 struct ppc_stub_hash_entry *stub_entry;
13481 bfd_vma max_br_offset;
13483 Elf_Internal_Rela orig_rel;
13484 reloc_howto_type *howto;
13485 struct reloc_howto_struct alt_howto;
13490 r_type = ELF64_R_TYPE (rel->r_info);
13491 r_symndx = ELF64_R_SYM (rel->r_info);
13493 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13494 symbol of the previous ADDR64 reloc. The symbol gives us the
13495 proper TOC base to use. */
13496 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13498 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13500 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13506 unresolved_reloc = FALSE;
13509 if (r_symndx < symtab_hdr->sh_info)
13511 /* It's a local symbol. */
13512 struct _opd_sec_data *opd;
13514 sym = local_syms + r_symndx;
13515 sec = local_sections[r_symndx];
13516 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13517 sym_type = ELF64_ST_TYPE (sym->st_info);
13518 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13519 opd = get_opd_info (sec);
13520 if (opd != NULL && opd->adjust != NULL)
13522 long adjust = opd->adjust[OPD_NDX (sym->st_value
13528 /* If this is a relocation against the opd section sym
13529 and we have edited .opd, adjust the reloc addend so
13530 that ld -r and ld --emit-relocs output is correct.
13531 If it is a reloc against some other .opd symbol,
13532 then the symbol value will be adjusted later. */
13533 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13534 rel->r_addend += adjust;
13536 relocation += adjust;
13542 bfd_boolean ignored;
13544 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13545 r_symndx, symtab_hdr, sym_hashes,
13546 h_elf, sec, relocation,
13547 unresolved_reloc, warned, ignored);
13548 sym_name = h_elf->root.root.string;
13549 sym_type = h_elf->type;
13551 && sec->owner == output_bfd
13552 && strcmp (sec->name, ".opd") == 0)
13554 /* This is a symbol defined in a linker script. All
13555 such are defined in output sections, even those
13556 defined by simple assignment from a symbol defined in
13557 an input section. Transfer the symbol to an
13558 appropriate input .opd section, so that a branch to
13559 this symbol will be mapped to the location specified
13560 by the opd entry. */
13561 struct bfd_link_order *lo;
13562 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13563 if (lo->type == bfd_indirect_link_order)
13565 asection *isec = lo->u.indirect.section;
13566 if (h_elf->root.u.def.value >= isec->output_offset
13567 && h_elf->root.u.def.value < (isec->output_offset
13570 h_elf->root.u.def.value -= isec->output_offset;
13571 h_elf->root.u.def.section = isec;
13578 h = (struct ppc_link_hash_entry *) h_elf;
13580 if (sec != NULL && discarded_section (sec))
13582 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13583 input_bfd, input_section,
13584 contents + rel->r_offset);
13585 wrel->r_offset = rel->r_offset;
13587 wrel->r_addend = 0;
13589 /* For ld -r, remove relocations in debug sections against
13590 sections defined in discarded sections. Not done for
13591 non-debug to preserve relocs in .eh_frame which the
13592 eh_frame editing code expects to be present. */
13593 if (bfd_link_relocatable (info)
13594 && (input_section->flags & SEC_DEBUGGING))
13600 if (bfd_link_relocatable (info))
13603 if (h != NULL && &h->elf == htab->elf.hgot)
13605 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13606 sec = bfd_abs_section_ptr;
13607 unresolved_reloc = FALSE;
13610 /* TLS optimizations. Replace instruction sequences and relocs
13611 based on information we collected in tls_optimize. We edit
13612 RELOCS so that --emit-relocs will output something sensible
13613 for the final instruction stream. */
13618 tls_mask = h->tls_mask;
13619 else if (local_got_ents != NULL)
13621 struct plt_entry **local_plt = (struct plt_entry **)
13622 (local_got_ents + symtab_hdr->sh_info);
13623 unsigned char *lgot_masks = (unsigned char *)
13624 (local_plt + symtab_hdr->sh_info);
13625 tls_mask = lgot_masks[r_symndx];
13628 && (r_type == R_PPC64_TLS
13629 || r_type == R_PPC64_TLSGD
13630 || r_type == R_PPC64_TLSLD))
13632 /* Check for toc tls entries. */
13633 unsigned char *toc_tls;
13635 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13636 &local_syms, rel, input_bfd))
13640 tls_mask = *toc_tls;
13643 /* Check that tls relocs are used with tls syms, and non-tls
13644 relocs are used with non-tls syms. */
13645 if (r_symndx != STN_UNDEF
13646 && r_type != R_PPC64_NONE
13648 || h->elf.root.type == bfd_link_hash_defined
13649 || h->elf.root.type == bfd_link_hash_defweak)
13650 && (IS_PPC64_TLS_RELOC (r_type)
13651 != (sym_type == STT_TLS
13652 || (sym_type == STT_SECTION
13653 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13656 && (r_type == R_PPC64_TLS
13657 || r_type == R_PPC64_TLSGD
13658 || r_type == R_PPC64_TLSLD))
13659 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13662 info->callbacks->einfo
13663 (!IS_PPC64_TLS_RELOC (r_type)
13664 /* xgettext:c-format */
13665 ? _("%H: %s used with TLS symbol `%T'\n")
13666 /* xgettext:c-format */
13667 : _("%H: %s used with non-TLS symbol `%T'\n"),
13668 input_bfd, input_section, rel->r_offset,
13669 ppc64_elf_howto_table[r_type]->name,
13673 /* Ensure reloc mapping code below stays sane. */
13674 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13675 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13676 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13677 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13678 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13679 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13680 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13681 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13682 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13683 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13691 case R_PPC64_LO_DS_OPT:
13692 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13693 if ((insn & (0x3f << 26)) != 58u << 26)
13695 insn += (14u << 26) - (58u << 26);
13696 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13697 r_type = R_PPC64_TOC16_LO;
13698 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13701 case R_PPC64_TOC16:
13702 case R_PPC64_TOC16_LO:
13703 case R_PPC64_TOC16_DS:
13704 case R_PPC64_TOC16_LO_DS:
13706 /* Check for toc tls entries. */
13707 unsigned char *toc_tls;
13710 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13711 &local_syms, rel, input_bfd);
13717 tls_mask = *toc_tls;
13718 if (r_type == R_PPC64_TOC16_DS
13719 || r_type == R_PPC64_TOC16_LO_DS)
13722 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13727 /* If we found a GD reloc pair, then we might be
13728 doing a GD->IE transition. */
13731 tls_gd = TLS_TPRELGD;
13732 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13735 else if (retval == 3)
13737 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13745 case R_PPC64_GOT_TPREL16_HI:
13746 case R_PPC64_GOT_TPREL16_HA:
13748 && (tls_mask & TLS_TPREL) == 0)
13750 rel->r_offset -= d_offset;
13751 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13752 r_type = R_PPC64_NONE;
13753 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13757 case R_PPC64_GOT_TPREL16_DS:
13758 case R_PPC64_GOT_TPREL16_LO_DS:
13760 && (tls_mask & TLS_TPREL) == 0)
13763 insn = bfd_get_32 (input_bfd,
13764 contents + rel->r_offset - d_offset);
13766 insn |= 0x3c0d0000; /* addis 0,13,0 */
13767 bfd_put_32 (input_bfd, insn,
13768 contents + rel->r_offset - d_offset);
13769 r_type = R_PPC64_TPREL16_HA;
13770 if (toc_symndx != 0)
13772 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13773 rel->r_addend = toc_addend;
13774 /* We changed the symbol. Start over in order to
13775 get h, sym, sec etc. right. */
13779 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13785 && (tls_mask & TLS_TPREL) == 0)
13787 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13788 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13791 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13792 /* Was PPC64_TLS which sits on insn boundary, now
13793 PPC64_TPREL16_LO which is at low-order half-word. */
13794 rel->r_offset += d_offset;
13795 r_type = R_PPC64_TPREL16_LO;
13796 if (toc_symndx != 0)
13798 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13799 rel->r_addend = toc_addend;
13800 /* We changed the symbol. Start over in order to
13801 get h, sym, sec etc. right. */
13805 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13809 case R_PPC64_GOT_TLSGD16_HI:
13810 case R_PPC64_GOT_TLSGD16_HA:
13811 tls_gd = TLS_TPRELGD;
13812 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13816 case R_PPC64_GOT_TLSLD16_HI:
13817 case R_PPC64_GOT_TLSLD16_HA:
13818 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13821 if ((tls_mask & tls_gd) != 0)
13822 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13823 + R_PPC64_GOT_TPREL16_DS);
13826 rel->r_offset -= d_offset;
13827 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13828 r_type = R_PPC64_NONE;
13830 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13834 case R_PPC64_GOT_TLSGD16:
13835 case R_PPC64_GOT_TLSGD16_LO:
13836 tls_gd = TLS_TPRELGD;
13837 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13841 case R_PPC64_GOT_TLSLD16:
13842 case R_PPC64_GOT_TLSLD16_LO:
13843 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13845 unsigned int insn1, insn2, insn3;
13849 offset = (bfd_vma) -1;
13850 /* If not using the newer R_PPC64_TLSGD/LD to mark
13851 __tls_get_addr calls, we must trust that the call
13852 stays with its arg setup insns, ie. that the next
13853 reloc is the __tls_get_addr call associated with
13854 the current reloc. Edit both insns. */
13855 if (input_section->has_tls_get_addr_call
13856 && rel + 1 < relend
13857 && branch_reloc_hash_match (input_bfd, rel + 1,
13858 htab->tls_get_addr,
13859 htab->tls_get_addr_fd))
13860 offset = rel[1].r_offset;
13861 /* We read the low GOT_TLS (or TOC16) insn because we
13862 need to keep the destination reg. It may be
13863 something other than the usual r3, and moved to r3
13864 before the call by intervening code. */
13865 insn1 = bfd_get_32 (input_bfd,
13866 contents + rel->r_offset - d_offset);
13867 if ((tls_mask & tls_gd) != 0)
13870 insn1 &= (0x1f << 21) | (0x1f << 16);
13871 insn1 |= 58 << 26; /* ld */
13872 insn2 = 0x7c636a14; /* add 3,3,13 */
13873 if (offset != (bfd_vma) -1)
13874 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13875 if ((tls_mask & TLS_EXPLICIT) == 0)
13876 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13877 + R_PPC64_GOT_TPREL16_DS);
13879 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13880 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13885 insn1 &= 0x1f << 21;
13886 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13887 insn2 = 0x38630000; /* addi 3,3,0 */
13890 /* Was an LD reloc. */
13892 sec = local_sections[toc_symndx];
13894 r_symndx < symtab_hdr->sh_info;
13896 if (local_sections[r_symndx] == sec)
13898 if (r_symndx >= symtab_hdr->sh_info)
13899 r_symndx = STN_UNDEF;
13900 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13901 if (r_symndx != STN_UNDEF)
13902 rel->r_addend -= (local_syms[r_symndx].st_value
13903 + sec->output_offset
13904 + sec->output_section->vma);
13906 else if (toc_symndx != 0)
13908 r_symndx = toc_symndx;
13909 rel->r_addend = toc_addend;
13911 r_type = R_PPC64_TPREL16_HA;
13912 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13913 if (offset != (bfd_vma) -1)
13915 rel[1].r_info = ELF64_R_INFO (r_symndx,
13916 R_PPC64_TPREL16_LO);
13917 rel[1].r_offset = offset + d_offset;
13918 rel[1].r_addend = rel->r_addend;
13921 bfd_put_32 (input_bfd, insn1,
13922 contents + rel->r_offset - d_offset);
13923 if (offset != (bfd_vma) -1)
13925 insn3 = bfd_get_32 (input_bfd,
13926 contents + offset + 4);
13928 || insn3 == CROR_151515 || insn3 == CROR_313131)
13930 rel[1].r_offset += 4;
13931 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13934 bfd_put_32 (input_bfd, insn2, contents + offset);
13936 if ((tls_mask & tls_gd) == 0
13937 && (tls_gd == 0 || toc_symndx != 0))
13939 /* We changed the symbol. Start over in order
13940 to get h, sym, sec etc. right. */
13946 case R_PPC64_TLSGD:
13947 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13949 unsigned int insn2, insn3;
13950 bfd_vma offset = rel->r_offset;
13952 if ((tls_mask & TLS_TPRELGD) != 0)
13955 r_type = R_PPC64_NONE;
13956 insn2 = 0x7c636a14; /* add 3,3,13 */
13961 if (toc_symndx != 0)
13963 r_symndx = toc_symndx;
13964 rel->r_addend = toc_addend;
13966 r_type = R_PPC64_TPREL16_LO;
13967 rel->r_offset = offset + d_offset;
13968 insn2 = 0x38630000; /* addi 3,3,0 */
13970 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13971 /* Zap the reloc on the _tls_get_addr call too. */
13972 BFD_ASSERT (offset == rel[1].r_offset);
13973 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13974 insn3 = bfd_get_32 (input_bfd,
13975 contents + offset + 4);
13977 || insn3 == CROR_151515 || insn3 == CROR_313131)
13979 rel->r_offset += 4;
13980 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13983 bfd_put_32 (input_bfd, insn2, contents + offset);
13984 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13989 case R_PPC64_TLSLD:
13990 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13992 unsigned int insn2, insn3;
13993 bfd_vma offset = rel->r_offset;
13996 sec = local_sections[toc_symndx];
13998 r_symndx < symtab_hdr->sh_info;
14000 if (local_sections[r_symndx] == sec)
14002 if (r_symndx >= symtab_hdr->sh_info)
14003 r_symndx = STN_UNDEF;
14004 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14005 if (r_symndx != STN_UNDEF)
14006 rel->r_addend -= (local_syms[r_symndx].st_value
14007 + sec->output_offset
14008 + sec->output_section->vma);
14010 r_type = R_PPC64_TPREL16_LO;
14011 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14012 rel->r_offset = offset + d_offset;
14013 /* Zap the reloc on the _tls_get_addr call too. */
14014 BFD_ASSERT (offset == rel[1].r_offset);
14015 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14016 insn2 = 0x38630000; /* addi 3,3,0 */
14017 insn3 = bfd_get_32 (input_bfd,
14018 contents + offset + 4);
14020 || insn3 == CROR_151515 || insn3 == CROR_313131)
14022 rel->r_offset += 4;
14023 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14026 bfd_put_32 (input_bfd, insn2, contents + offset);
14031 case R_PPC64_DTPMOD64:
14032 if (rel + 1 < relend
14033 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
14034 && rel[1].r_offset == rel->r_offset + 8)
14036 if ((tls_mask & TLS_GD) == 0)
14038 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
14039 if ((tls_mask & TLS_TPRELGD) != 0)
14040 r_type = R_PPC64_TPREL64;
14043 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14044 r_type = R_PPC64_NONE;
14046 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14051 if ((tls_mask & TLS_LD) == 0)
14053 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14054 r_type = R_PPC64_NONE;
14055 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14060 case R_PPC64_TPREL64:
14061 if ((tls_mask & TLS_TPREL) == 0)
14063 r_type = R_PPC64_NONE;
14064 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14068 case R_PPC64_ENTRY:
14069 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14070 if (!bfd_link_pic (info)
14071 && !info->traditional_format
14072 && relocation + 0x80008000 <= 0xffffffff)
14074 unsigned int insn1, insn2;
14076 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14077 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14078 if ((insn1 & ~0xfffc) == LD_R2_0R12
14079 && insn2 == ADD_R2_R2_R12)
14081 bfd_put_32 (input_bfd,
14082 LIS_R2 + PPC_HA (relocation),
14083 contents + rel->r_offset);
14084 bfd_put_32 (input_bfd,
14085 ADDI_R2_R2 + PPC_LO (relocation),
14086 contents + rel->r_offset + 4);
14091 relocation -= (rel->r_offset
14092 + input_section->output_offset
14093 + input_section->output_section->vma);
14094 if (relocation + 0x80008000 <= 0xffffffff)
14096 unsigned int insn1, insn2;
14098 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14099 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14100 if ((insn1 & ~0xfffc) == LD_R2_0R12
14101 && insn2 == ADD_R2_R2_R12)
14103 bfd_put_32 (input_bfd,
14104 ADDIS_R2_R12 + PPC_HA (relocation),
14105 contents + rel->r_offset);
14106 bfd_put_32 (input_bfd,
14107 ADDI_R2_R2 + PPC_LO (relocation),
14108 contents + rel->r_offset + 4);
14114 case R_PPC64_REL16_HA:
14115 /* If we are generating a non-PIC executable, edit
14116 . 0: addis 2,12,.TOC.-0b@ha
14117 . addi 2,2,.TOC.-0b@l
14118 used by ELFv2 global entry points to set up r2, to
14121 if .TOC. is in range. */
14122 if (!bfd_link_pic (info)
14123 && !info->traditional_format
14125 && rel->r_addend == d_offset
14126 && h != NULL && &h->elf == htab->elf.hgot
14127 && rel + 1 < relend
14128 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14129 && rel[1].r_offset == rel->r_offset + 4
14130 && rel[1].r_addend == rel->r_addend + 4
14131 && relocation + 0x80008000 <= 0xffffffff)
14133 unsigned int insn1, insn2;
14134 bfd_vma offset = rel->r_offset - d_offset;
14135 insn1 = bfd_get_32 (input_bfd, contents + offset);
14136 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14137 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14138 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14140 r_type = R_PPC64_ADDR16_HA;
14141 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14142 rel->r_addend -= d_offset;
14143 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14144 rel[1].r_addend -= d_offset + 4;
14145 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14151 /* Handle other relocations that tweak non-addend part of insn. */
14153 max_br_offset = 1 << 25;
14154 addend = rel->r_addend;
14155 reloc_dest = DEST_NORMAL;
14161 case R_PPC64_TOCSAVE:
14162 if (relocation + addend == (rel->r_offset
14163 + input_section->output_offset
14164 + input_section->output_section->vma)
14165 && tocsave_find (htab, NO_INSERT,
14166 &local_syms, rel, input_bfd))
14168 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14170 || insn == CROR_151515 || insn == CROR_313131)
14171 bfd_put_32 (input_bfd,
14172 STD_R2_0R1 + STK_TOC (htab),
14173 contents + rel->r_offset);
14177 /* Branch taken prediction relocations. */
14178 case R_PPC64_ADDR14_BRTAKEN:
14179 case R_PPC64_REL14_BRTAKEN:
14180 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14181 /* Fall through. */
14183 /* Branch not taken prediction relocations. */
14184 case R_PPC64_ADDR14_BRNTAKEN:
14185 case R_PPC64_REL14_BRNTAKEN:
14186 insn |= bfd_get_32 (input_bfd,
14187 contents + rel->r_offset) & ~(0x01 << 21);
14188 /* Fall through. */
14190 case R_PPC64_REL14:
14191 max_br_offset = 1 << 15;
14192 /* Fall through. */
14194 case R_PPC64_REL24:
14195 /* Calls to functions with a different TOC, such as calls to
14196 shared objects, need to alter the TOC pointer. This is
14197 done using a linkage stub. A REL24 branching to these
14198 linkage stubs needs to be followed by a nop, as the nop
14199 will be replaced with an instruction to restore the TOC
14204 && h->oh->is_func_descriptor)
14205 fdh = ppc_follow_link (h->oh);
14206 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14208 if (stub_entry != NULL
14209 && (stub_entry->stub_type == ppc_stub_plt_call
14210 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14211 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14212 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14214 bfd_boolean can_plt_call = FALSE;
14216 if (stub_entry->stub_type == ppc_stub_plt_call
14218 && htab->params->plt_localentry0 != 0
14219 && is_elfv2_localentry0 (&h->elf))
14221 /* The function doesn't use or change r2. */
14222 can_plt_call = TRUE;
14225 /* All of these stubs may modify r2, so there must be a
14226 branch and link followed by a nop. The nop is
14227 replaced by an insn to restore r2. */
14228 else if (rel->r_offset + 8 <= input_section->size)
14232 br = bfd_get_32 (input_bfd,
14233 contents + rel->r_offset);
14238 nop = bfd_get_32 (input_bfd,
14239 contents + rel->r_offset + 4);
14241 || nop == CROR_151515 || nop == CROR_313131)
14244 && (h == htab->tls_get_addr_fd
14245 || h == htab->tls_get_addr)
14246 && htab->params->tls_get_addr_opt)
14248 /* Special stub used, leave nop alone. */
14251 bfd_put_32 (input_bfd,
14252 LD_R2_0R1 + STK_TOC (htab),
14253 contents + rel->r_offset + 4);
14254 can_plt_call = TRUE;
14259 if (!can_plt_call && h != NULL)
14261 const char *name = h->elf.root.root.string;
14266 if (strncmp (name, "__libc_start_main", 17) == 0
14267 && (name[17] == 0 || name[17] == '@'))
14269 /* Allow crt1 branch to go via a toc adjusting
14270 stub. Other calls that never return could do
14271 the same, if we could detect such. */
14272 can_plt_call = TRUE;
14278 /* g++ as of 20130507 emits self-calls without a
14279 following nop. This is arguably wrong since we
14280 have conflicting information. On the one hand a
14281 global symbol and on the other a local call
14282 sequence, but don't error for this special case.
14283 It isn't possible to cheaply verify we have
14284 exactly such a call. Allow all calls to the same
14286 asection *code_sec = sec;
14288 if (get_opd_info (sec) != NULL)
14290 bfd_vma off = (relocation + addend
14291 - sec->output_section->vma
14292 - sec->output_offset);
14294 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14296 if (code_sec == input_section)
14297 can_plt_call = TRUE;
14302 if (stub_entry->stub_type == ppc_stub_plt_call
14303 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14304 info->callbacks->einfo
14305 /* xgettext:c-format */
14306 (_("%H: call to `%T' lacks nop, can't restore toc; "
14307 "recompile with -fPIC\n"),
14308 input_bfd, input_section, rel->r_offset, sym_name);
14310 info->callbacks->einfo
14311 /* xgettext:c-format */
14312 (_("%H: call to `%T' lacks nop, can't restore toc; "
14313 "(-mcmodel=small toc adjust stub)\n"),
14314 input_bfd, input_section, rel->r_offset, sym_name);
14316 bfd_set_error (bfd_error_bad_value);
14321 && (stub_entry->stub_type == ppc_stub_plt_call
14322 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14323 unresolved_reloc = FALSE;
14326 if ((stub_entry == NULL
14327 || stub_entry->stub_type == ppc_stub_long_branch
14328 || stub_entry->stub_type == ppc_stub_plt_branch)
14329 && get_opd_info (sec) != NULL)
14331 /* The branch destination is the value of the opd entry. */
14332 bfd_vma off = (relocation + addend
14333 - sec->output_section->vma
14334 - sec->output_offset);
14335 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14336 if (dest != (bfd_vma) -1)
14340 reloc_dest = DEST_OPD;
14344 /* If the branch is out of reach we ought to have a long
14346 from = (rel->r_offset
14347 + input_section->output_offset
14348 + input_section->output_section->vma);
14350 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14354 if (stub_entry != NULL
14355 && (stub_entry->stub_type == ppc_stub_long_branch
14356 || stub_entry->stub_type == ppc_stub_plt_branch)
14357 && (r_type == R_PPC64_ADDR14_BRTAKEN
14358 || r_type == R_PPC64_ADDR14_BRNTAKEN
14359 || (relocation + addend - from + max_br_offset
14360 < 2 * max_br_offset)))
14361 /* Don't use the stub if this branch is in range. */
14364 if (stub_entry != NULL)
14366 /* Munge up the value and addend so that we call the stub
14367 rather than the procedure directly. */
14368 asection *stub_sec = stub_entry->group->stub_sec;
14370 if (stub_entry->stub_type == ppc_stub_save_res)
14371 relocation += (stub_sec->output_offset
14372 + stub_sec->output_section->vma
14373 + stub_sec->size - htab->sfpr->size
14374 - htab->sfpr->output_offset
14375 - htab->sfpr->output_section->vma);
14377 relocation = (stub_entry->stub_offset
14378 + stub_sec->output_offset
14379 + stub_sec->output_section->vma);
14381 reloc_dest = DEST_STUB;
14383 if ((stub_entry->stub_type == ppc_stub_plt_call
14384 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14385 && (ALWAYS_EMIT_R2SAVE
14386 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14387 && rel + 1 < relend
14388 && rel[1].r_offset == rel->r_offset + 4
14389 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14397 /* Set 'a' bit. This is 0b00010 in BO field for branch
14398 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14399 for branch on CTR insns (BO == 1a00t or 1a01t). */
14400 if ((insn & (0x14 << 21)) == (0x04 << 21))
14401 insn |= 0x02 << 21;
14402 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14403 insn |= 0x08 << 21;
14409 /* Invert 'y' bit if not the default. */
14410 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14411 insn ^= 0x01 << 21;
14414 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14417 /* NOP out calls to undefined weak functions.
14418 We can thus call a weak function without first
14419 checking whether the function is defined. */
14421 && h->elf.root.type == bfd_link_hash_undefweak
14422 && h->elf.dynindx == -1
14423 && r_type == R_PPC64_REL24
14427 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14433 /* Set `addend'. */
14438 info->callbacks->einfo
14439 /* xgettext:c-format */
14440 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14441 input_bfd, (int) r_type, sym_name);
14443 bfd_set_error (bfd_error_bad_value);
14449 case R_PPC64_TLSGD:
14450 case R_PPC64_TLSLD:
14451 case R_PPC64_TOCSAVE:
14452 case R_PPC64_GNU_VTINHERIT:
14453 case R_PPC64_GNU_VTENTRY:
14454 case R_PPC64_ENTRY:
14457 /* GOT16 relocations. Like an ADDR16 using the symbol's
14458 address in the GOT as relocation value instead of the
14459 symbol's value itself. Also, create a GOT entry for the
14460 symbol and put the symbol value there. */
14461 case R_PPC64_GOT_TLSGD16:
14462 case R_PPC64_GOT_TLSGD16_LO:
14463 case R_PPC64_GOT_TLSGD16_HI:
14464 case R_PPC64_GOT_TLSGD16_HA:
14465 tls_type = TLS_TLS | TLS_GD;
14468 case R_PPC64_GOT_TLSLD16:
14469 case R_PPC64_GOT_TLSLD16_LO:
14470 case R_PPC64_GOT_TLSLD16_HI:
14471 case R_PPC64_GOT_TLSLD16_HA:
14472 tls_type = TLS_TLS | TLS_LD;
14475 case R_PPC64_GOT_TPREL16_DS:
14476 case R_PPC64_GOT_TPREL16_LO_DS:
14477 case R_PPC64_GOT_TPREL16_HI:
14478 case R_PPC64_GOT_TPREL16_HA:
14479 tls_type = TLS_TLS | TLS_TPREL;
14482 case R_PPC64_GOT_DTPREL16_DS:
14483 case R_PPC64_GOT_DTPREL16_LO_DS:
14484 case R_PPC64_GOT_DTPREL16_HI:
14485 case R_PPC64_GOT_DTPREL16_HA:
14486 tls_type = TLS_TLS | TLS_DTPREL;
14489 case R_PPC64_GOT16:
14490 case R_PPC64_GOT16_LO:
14491 case R_PPC64_GOT16_HI:
14492 case R_PPC64_GOT16_HA:
14493 case R_PPC64_GOT16_DS:
14494 case R_PPC64_GOT16_LO_DS:
14497 /* Relocation is to the entry for this symbol in the global
14502 unsigned long indx = 0;
14503 struct got_entry *ent;
14505 if (tls_type == (TLS_TLS | TLS_LD)
14507 || !h->elf.def_dynamic))
14508 ent = ppc64_tlsld_got (input_bfd);
14513 if (!htab->elf.dynamic_sections_created
14514 || h->elf.dynindx == -1
14515 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14516 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14517 /* This is actually a static link, or it is a
14518 -Bsymbolic link and the symbol is defined
14519 locally, or the symbol was forced to be local
14520 because of a version file. */
14524 indx = h->elf.dynindx;
14525 unresolved_reloc = FALSE;
14527 ent = h->elf.got.glist;
14531 if (local_got_ents == NULL)
14533 ent = local_got_ents[r_symndx];
14536 for (; ent != NULL; ent = ent->next)
14537 if (ent->addend == orig_rel.r_addend
14538 && ent->owner == input_bfd
14539 && ent->tls_type == tls_type)
14545 if (ent->is_indirect)
14546 ent = ent->got.ent;
14547 offp = &ent->got.offset;
14548 got = ppc64_elf_tdata (ent->owner)->got;
14552 /* The offset must always be a multiple of 8. We use the
14553 least significant bit to record whether we have already
14554 processed this entry. */
14556 if ((off & 1) != 0)
14560 /* Generate relocs for the dynamic linker, except in
14561 the case of TLSLD where we'll use one entry per
14569 ? h->elf.type == STT_GNU_IFUNC
14570 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14573 relgot = htab->elf.irelplt;
14575 htab->local_ifunc_resolver = 1;
14576 else if (is_static_defined (&h->elf))
14577 htab->maybe_local_ifunc_resolver = 1;
14580 || (bfd_link_pic (info)
14582 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14583 || (tls_type == (TLS_TLS | TLS_LD)
14584 && !h->elf.def_dynamic))))
14585 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14586 if (relgot != NULL)
14588 outrel.r_offset = (got->output_section->vma
14589 + got->output_offset
14591 outrel.r_addend = addend;
14592 if (tls_type & (TLS_LD | TLS_GD))
14594 outrel.r_addend = 0;
14595 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14596 if (tls_type == (TLS_TLS | TLS_GD))
14598 loc = relgot->contents;
14599 loc += (relgot->reloc_count++
14600 * sizeof (Elf64_External_Rela));
14601 bfd_elf64_swap_reloca_out (output_bfd,
14603 outrel.r_offset += 8;
14604 outrel.r_addend = addend;
14606 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14609 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14610 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14611 else if (tls_type == (TLS_TLS | TLS_TPREL))
14612 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14613 else if (indx != 0)
14614 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14618 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14620 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14622 /* Write the .got section contents for the sake
14624 loc = got->contents + off;
14625 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14629 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14631 outrel.r_addend += relocation;
14632 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14634 if (htab->elf.tls_sec == NULL)
14635 outrel.r_addend = 0;
14637 outrel.r_addend -= htab->elf.tls_sec->vma;
14640 loc = relgot->contents;
14641 loc += (relgot->reloc_count++
14642 * sizeof (Elf64_External_Rela));
14643 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14646 /* Init the .got section contents here if we're not
14647 emitting a reloc. */
14650 relocation += addend;
14653 if (htab->elf.tls_sec == NULL)
14657 if (tls_type & TLS_LD)
14660 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14661 if (tls_type & TLS_TPREL)
14662 relocation += DTP_OFFSET - TP_OFFSET;
14665 if (tls_type & (TLS_GD | TLS_LD))
14667 bfd_put_64 (output_bfd, relocation,
14668 got->contents + off + 8);
14672 bfd_put_64 (output_bfd, relocation,
14673 got->contents + off);
14677 if (off >= (bfd_vma) -2)
14680 relocation = got->output_section->vma + got->output_offset + off;
14681 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14685 case R_PPC64_PLT16_HA:
14686 case R_PPC64_PLT16_HI:
14687 case R_PPC64_PLT16_LO:
14688 case R_PPC64_PLT32:
14689 case R_PPC64_PLT64:
14690 /* Relocation is to the entry for this symbol in the
14691 procedure linkage table. */
14693 struct plt_entry **plt_list = NULL;
14695 plt_list = &h->elf.plt.plist;
14696 else if (local_got_ents != NULL)
14698 struct plt_entry **local_plt = (struct plt_entry **)
14699 (local_got_ents + symtab_hdr->sh_info);
14700 unsigned char *local_got_tls_masks = (unsigned char *)
14701 (local_plt + symtab_hdr->sh_info);
14702 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14703 plt_list = local_plt + r_symndx;
14707 struct plt_entry *ent;
14709 for (ent = *plt_list; ent != NULL; ent = ent->next)
14710 if (ent->plt.offset != (bfd_vma) -1
14711 && ent->addend == orig_rel.r_addend)
14715 plt = htab->elf.splt;
14716 if (!htab->elf.dynamic_sections_created
14718 || h->elf.dynindx == -1)
14719 plt = htab->elf.iplt;
14720 relocation = (plt->output_section->vma
14721 + plt->output_offset
14722 + ent->plt.offset);
14724 unresolved_reloc = FALSE;
14732 /* Relocation value is TOC base. */
14733 relocation = TOCstart;
14734 if (r_symndx == STN_UNDEF)
14735 relocation += htab->sec_info[input_section->id].toc_off;
14736 else if (unresolved_reloc)
14738 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14739 relocation += htab->sec_info[sec->id].toc_off;
14741 unresolved_reloc = TRUE;
14744 /* TOC16 relocs. We want the offset relative to the TOC base,
14745 which is the address of the start of the TOC plus 0x8000.
14746 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14748 case R_PPC64_TOC16:
14749 case R_PPC64_TOC16_LO:
14750 case R_PPC64_TOC16_HI:
14751 case R_PPC64_TOC16_DS:
14752 case R_PPC64_TOC16_LO_DS:
14753 case R_PPC64_TOC16_HA:
14754 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14757 /* Relocate against the beginning of the section. */
14758 case R_PPC64_SECTOFF:
14759 case R_PPC64_SECTOFF_LO:
14760 case R_PPC64_SECTOFF_HI:
14761 case R_PPC64_SECTOFF_DS:
14762 case R_PPC64_SECTOFF_LO_DS:
14763 case R_PPC64_SECTOFF_HA:
14765 addend -= sec->output_section->vma;
14768 case R_PPC64_REL16:
14769 case R_PPC64_REL16_LO:
14770 case R_PPC64_REL16_HI:
14771 case R_PPC64_REL16_HA:
14772 case R_PPC64_REL16DX_HA:
14775 case R_PPC64_REL14:
14776 case R_PPC64_REL14_BRNTAKEN:
14777 case R_PPC64_REL14_BRTAKEN:
14778 case R_PPC64_REL24:
14781 case R_PPC64_TPREL16:
14782 case R_PPC64_TPREL16_LO:
14783 case R_PPC64_TPREL16_HI:
14784 case R_PPC64_TPREL16_HA:
14785 case R_PPC64_TPREL16_DS:
14786 case R_PPC64_TPREL16_LO_DS:
14787 case R_PPC64_TPREL16_HIGH:
14788 case R_PPC64_TPREL16_HIGHA:
14789 case R_PPC64_TPREL16_HIGHER:
14790 case R_PPC64_TPREL16_HIGHERA:
14791 case R_PPC64_TPREL16_HIGHEST:
14792 case R_PPC64_TPREL16_HIGHESTA:
14794 && h->elf.root.type == bfd_link_hash_undefweak
14795 && h->elf.dynindx == -1)
14797 /* Make this relocation against an undefined weak symbol
14798 resolve to zero. This is really just a tweak, since
14799 code using weak externs ought to check that they are
14800 defined before using them. */
14801 bfd_byte *p = contents + rel->r_offset - d_offset;
14803 insn = bfd_get_32 (input_bfd, p);
14804 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14806 bfd_put_32 (input_bfd, insn, p);
14809 if (htab->elf.tls_sec != NULL)
14810 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14811 if (bfd_link_pic (info))
14812 /* The TPREL16 relocs shouldn't really be used in shared
14813 libs as they will result in DT_TEXTREL being set, but
14814 support them anyway. */
14818 case R_PPC64_DTPREL16:
14819 case R_PPC64_DTPREL16_LO:
14820 case R_PPC64_DTPREL16_HI:
14821 case R_PPC64_DTPREL16_HA:
14822 case R_PPC64_DTPREL16_DS:
14823 case R_PPC64_DTPREL16_LO_DS:
14824 case R_PPC64_DTPREL16_HIGH:
14825 case R_PPC64_DTPREL16_HIGHA:
14826 case R_PPC64_DTPREL16_HIGHER:
14827 case R_PPC64_DTPREL16_HIGHERA:
14828 case R_PPC64_DTPREL16_HIGHEST:
14829 case R_PPC64_DTPREL16_HIGHESTA:
14830 if (htab->elf.tls_sec != NULL)
14831 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14834 case R_PPC64_ADDR64_LOCAL:
14835 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14840 case R_PPC64_DTPMOD64:
14845 case R_PPC64_TPREL64:
14846 if (htab->elf.tls_sec != NULL)
14847 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14850 case R_PPC64_DTPREL64:
14851 if (htab->elf.tls_sec != NULL)
14852 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14853 /* Fall through. */
14855 /* Relocations that may need to be propagated if this is a
14857 case R_PPC64_REL30:
14858 case R_PPC64_REL32:
14859 case R_PPC64_REL64:
14860 case R_PPC64_ADDR14:
14861 case R_PPC64_ADDR14_BRNTAKEN:
14862 case R_PPC64_ADDR14_BRTAKEN:
14863 case R_PPC64_ADDR16:
14864 case R_PPC64_ADDR16_DS:
14865 case R_PPC64_ADDR16_HA:
14866 case R_PPC64_ADDR16_HI:
14867 case R_PPC64_ADDR16_HIGH:
14868 case R_PPC64_ADDR16_HIGHA:
14869 case R_PPC64_ADDR16_HIGHER:
14870 case R_PPC64_ADDR16_HIGHERA:
14871 case R_PPC64_ADDR16_HIGHEST:
14872 case R_PPC64_ADDR16_HIGHESTA:
14873 case R_PPC64_ADDR16_LO:
14874 case R_PPC64_ADDR16_LO_DS:
14875 case R_PPC64_ADDR24:
14876 case R_PPC64_ADDR32:
14877 case R_PPC64_ADDR64:
14878 case R_PPC64_UADDR16:
14879 case R_PPC64_UADDR32:
14880 case R_PPC64_UADDR64:
14882 if ((input_section->flags & SEC_ALLOC) == 0)
14885 if (NO_OPD_RELOCS && is_opd)
14888 if (bfd_link_pic (info)
14890 || h->dyn_relocs != NULL)
14891 && ((h != NULL && pc_dynrelocs (h))
14892 || must_be_dyn_reloc (info, r_type)))
14894 ? h->dyn_relocs != NULL
14895 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14897 bfd_boolean skip, relocate;
14902 /* When generating a dynamic object, these relocations
14903 are copied into the output file to be resolved at run
14909 out_off = _bfd_elf_section_offset (output_bfd, info,
14910 input_section, rel->r_offset);
14911 if (out_off == (bfd_vma) -1)
14913 else if (out_off == (bfd_vma) -2)
14914 skip = TRUE, relocate = TRUE;
14915 out_off += (input_section->output_section->vma
14916 + input_section->output_offset);
14917 outrel.r_offset = out_off;
14918 outrel.r_addend = rel->r_addend;
14920 /* Optimize unaligned reloc use. */
14921 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14922 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14923 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14924 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14925 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14926 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14927 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14928 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14929 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14932 memset (&outrel, 0, sizeof outrel);
14933 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14935 && r_type != R_PPC64_TOC)
14937 indx = h->elf.dynindx;
14938 BFD_ASSERT (indx != -1);
14939 outrel.r_info = ELF64_R_INFO (indx, r_type);
14943 /* This symbol is local, or marked to become local,
14944 or this is an opd section reloc which must point
14945 at a local function. */
14946 outrel.r_addend += relocation;
14947 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14949 if (is_opd && h != NULL)
14951 /* Lie about opd entries. This case occurs
14952 when building shared libraries and we
14953 reference a function in another shared
14954 lib. The same thing happens for a weak
14955 definition in an application that's
14956 overridden by a strong definition in a
14957 shared lib. (I believe this is a generic
14958 bug in binutils handling of weak syms.)
14959 In these cases we won't use the opd
14960 entry in this lib. */
14961 unresolved_reloc = FALSE;
14964 && r_type == R_PPC64_ADDR64
14966 ? h->elf.type == STT_GNU_IFUNC
14967 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14968 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14971 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14973 /* We need to relocate .opd contents for ld.so.
14974 Prelink also wants simple and consistent rules
14975 for relocs. This make all RELATIVE relocs have
14976 *r_offset equal to r_addend. */
14983 ? h->elf.type == STT_GNU_IFUNC
14984 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14986 info->callbacks->einfo
14987 /* xgettext:c-format */
14988 (_("%H: %s for indirect "
14989 "function `%T' unsupported\n"),
14990 input_bfd, input_section, rel->r_offset,
14991 ppc64_elf_howto_table[r_type]->name,
14995 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14997 else if (sec == NULL || sec->owner == NULL)
14999 bfd_set_error (bfd_error_bad_value);
15006 osec = sec->output_section;
15007 indx = elf_section_data (osec)->dynindx;
15011 if ((osec->flags & SEC_READONLY) == 0
15012 && htab->elf.data_index_section != NULL)
15013 osec = htab->elf.data_index_section;
15015 osec = htab->elf.text_index_section;
15016 indx = elf_section_data (osec)->dynindx;
15018 BFD_ASSERT (indx != 0);
15020 /* We are turning this relocation into one
15021 against a section symbol, so subtract out
15022 the output section's address but not the
15023 offset of the input section in the output
15025 outrel.r_addend -= osec->vma;
15028 outrel.r_info = ELF64_R_INFO (indx, r_type);
15032 sreloc = elf_section_data (input_section)->sreloc;
15034 ? h->elf.type == STT_GNU_IFUNC
15035 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15037 sreloc = htab->elf.irelplt;
15039 htab->local_ifunc_resolver = 1;
15040 else if (is_static_defined (&h->elf))
15041 htab->maybe_local_ifunc_resolver = 1;
15043 if (sreloc == NULL)
15046 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
15049 loc = sreloc->contents;
15050 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
15051 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15053 /* If this reloc is against an external symbol, it will
15054 be computed at runtime, so there's no need to do
15055 anything now. However, for the sake of prelink ensure
15056 that the section contents are a known value. */
15059 unresolved_reloc = FALSE;
15060 /* The value chosen here is quite arbitrary as ld.so
15061 ignores section contents except for the special
15062 case of .opd where the contents might be accessed
15063 before relocation. Choose zero, as that won't
15064 cause reloc overflow. */
15067 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15068 to improve backward compatibility with older
15070 if (r_type == R_PPC64_ADDR64)
15071 addend = outrel.r_addend;
15072 /* Adjust pc_relative relocs to have zero in *r_offset. */
15073 else if (ppc64_elf_howto_table[r_type]->pc_relative)
15074 addend = outrel.r_offset;
15080 case R_PPC64_GLOB_DAT:
15081 case R_PPC64_JMP_SLOT:
15082 case R_PPC64_JMP_IREL:
15083 case R_PPC64_RELATIVE:
15084 /* We shouldn't ever see these dynamic relocs in relocatable
15086 /* Fall through. */
15088 case R_PPC64_PLTGOT16:
15089 case R_PPC64_PLTGOT16_DS:
15090 case R_PPC64_PLTGOT16_HA:
15091 case R_PPC64_PLTGOT16_HI:
15092 case R_PPC64_PLTGOT16_LO:
15093 case R_PPC64_PLTGOT16_LO_DS:
15094 case R_PPC64_PLTREL32:
15095 case R_PPC64_PLTREL64:
15096 /* These ones haven't been implemented yet. */
15098 info->callbacks->einfo
15099 /* xgettext:c-format */
15100 (_("%P: %B: %s is not supported for `%T'\n"),
15102 ppc64_elf_howto_table[r_type]->name, sym_name);
15104 bfd_set_error (bfd_error_invalid_operation);
15109 /* Multi-instruction sequences that access the TOC can be
15110 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15111 to nop; addi rb,r2,x; */
15117 case R_PPC64_GOT_TLSLD16_HI:
15118 case R_PPC64_GOT_TLSGD16_HI:
15119 case R_PPC64_GOT_TPREL16_HI:
15120 case R_PPC64_GOT_DTPREL16_HI:
15121 case R_PPC64_GOT16_HI:
15122 case R_PPC64_TOC16_HI:
15123 /* These relocs would only be useful if building up an
15124 offset to later add to r2, perhaps in an indexed
15125 addressing mode instruction. Don't try to optimize.
15126 Unfortunately, the possibility of someone building up an
15127 offset like this or even with the HA relocs, means that
15128 we need to check the high insn when optimizing the low
15132 case R_PPC64_GOT_TLSLD16_HA:
15133 case R_PPC64_GOT_TLSGD16_HA:
15134 case R_PPC64_GOT_TPREL16_HA:
15135 case R_PPC64_GOT_DTPREL16_HA:
15136 case R_PPC64_GOT16_HA:
15137 case R_PPC64_TOC16_HA:
15138 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15139 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15141 bfd_byte *p = contents + (rel->r_offset & ~3);
15142 bfd_put_32 (input_bfd, NOP, p);
15146 case R_PPC64_GOT_TLSLD16_LO:
15147 case R_PPC64_GOT_TLSGD16_LO:
15148 case R_PPC64_GOT_TPREL16_LO_DS:
15149 case R_PPC64_GOT_DTPREL16_LO_DS:
15150 case R_PPC64_GOT16_LO:
15151 case R_PPC64_GOT16_LO_DS:
15152 case R_PPC64_TOC16_LO:
15153 case R_PPC64_TOC16_LO_DS:
15154 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15155 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15157 bfd_byte *p = contents + (rel->r_offset & ~3);
15158 insn = bfd_get_32 (input_bfd, p);
15159 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15161 /* Transform addic to addi when we change reg. */
15162 insn &= ~((0x3f << 26) | (0x1f << 16));
15163 insn |= (14u << 26) | (2 << 16);
15167 insn &= ~(0x1f << 16);
15170 bfd_put_32 (input_bfd, insn, p);
15175 /* Do any further special processing. */
15176 howto = ppc64_elf_howto_table[(int) r_type];
15182 case R_PPC64_REL16_HA:
15183 case R_PPC64_REL16DX_HA:
15184 case R_PPC64_ADDR16_HA:
15185 case R_PPC64_ADDR16_HIGHA:
15186 case R_PPC64_ADDR16_HIGHERA:
15187 case R_PPC64_ADDR16_HIGHESTA:
15188 case R_PPC64_TOC16_HA:
15189 case R_PPC64_SECTOFF_HA:
15190 case R_PPC64_TPREL16_HA:
15191 case R_PPC64_TPREL16_HIGHA:
15192 case R_PPC64_TPREL16_HIGHERA:
15193 case R_PPC64_TPREL16_HIGHESTA:
15194 case R_PPC64_DTPREL16_HA:
15195 case R_PPC64_DTPREL16_HIGHA:
15196 case R_PPC64_DTPREL16_HIGHERA:
15197 case R_PPC64_DTPREL16_HIGHESTA:
15198 /* It's just possible that this symbol is a weak symbol
15199 that's not actually defined anywhere. In that case,
15200 'sec' would be NULL, and we should leave the symbol
15201 alone (it will be set to zero elsewhere in the link). */
15204 /* Fall through. */
15206 case R_PPC64_GOT16_HA:
15207 case R_PPC64_PLTGOT16_HA:
15208 case R_PPC64_PLT16_HA:
15209 case R_PPC64_GOT_TLSGD16_HA:
15210 case R_PPC64_GOT_TLSLD16_HA:
15211 case R_PPC64_GOT_TPREL16_HA:
15212 case R_PPC64_GOT_DTPREL16_HA:
15213 /* Add 0x10000 if sign bit in 0:15 is set.
15214 Bits 0:15 are not used. */
15218 case R_PPC64_ADDR16_DS:
15219 case R_PPC64_ADDR16_LO_DS:
15220 case R_PPC64_GOT16_DS:
15221 case R_PPC64_GOT16_LO_DS:
15222 case R_PPC64_PLT16_LO_DS:
15223 case R_PPC64_SECTOFF_DS:
15224 case R_PPC64_SECTOFF_LO_DS:
15225 case R_PPC64_TOC16_DS:
15226 case R_PPC64_TOC16_LO_DS:
15227 case R_PPC64_PLTGOT16_DS:
15228 case R_PPC64_PLTGOT16_LO_DS:
15229 case R_PPC64_GOT_TPREL16_DS:
15230 case R_PPC64_GOT_TPREL16_LO_DS:
15231 case R_PPC64_GOT_DTPREL16_DS:
15232 case R_PPC64_GOT_DTPREL16_LO_DS:
15233 case R_PPC64_TPREL16_DS:
15234 case R_PPC64_TPREL16_LO_DS:
15235 case R_PPC64_DTPREL16_DS:
15236 case R_PPC64_DTPREL16_LO_DS:
15237 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15239 /* If this reloc is against an lq, lxv, or stxv insn, then
15240 the value must be a multiple of 16. This is somewhat of
15241 a hack, but the "correct" way to do this by defining _DQ
15242 forms of all the _DS relocs bloats all reloc switches in
15243 this file. It doesn't make much sense to use these
15244 relocs in data, so testing the insn should be safe. */
15245 if ((insn & (0x3f << 26)) == (56u << 26)
15246 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15248 relocation += addend;
15249 addend = insn & (mask ^ 3);
15250 if ((relocation & mask) != 0)
15252 relocation ^= relocation & mask;
15253 info->callbacks->einfo
15254 /* xgettext:c-format */
15255 (_("%H: error: %s not a multiple of %u\n"),
15256 input_bfd, input_section, rel->r_offset,
15259 bfd_set_error (bfd_error_bad_value);
15266 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15267 because such sections are not SEC_ALLOC and thus ld.so will
15268 not process them. */
15269 if (unresolved_reloc
15270 && !((input_section->flags & SEC_DEBUGGING) != 0
15271 && h->elf.def_dynamic)
15272 && _bfd_elf_section_offset (output_bfd, info, input_section,
15273 rel->r_offset) != (bfd_vma) -1)
15275 info->callbacks->einfo
15276 /* xgettext:c-format */
15277 (_("%H: unresolvable %s against `%T'\n"),
15278 input_bfd, input_section, rel->r_offset,
15280 h->elf.root.root.string);
15284 /* 16-bit fields in insns mostly have signed values, but a
15285 few insns have 16-bit unsigned values. Really, we should
15286 have different reloc types. */
15287 if (howto->complain_on_overflow != complain_overflow_dont
15288 && howto->dst_mask == 0xffff
15289 && (input_section->flags & SEC_CODE) != 0)
15291 enum complain_overflow complain = complain_overflow_signed;
15293 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15294 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15295 complain = complain_overflow_bitfield;
15296 else if (howto->rightshift == 0
15297 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15298 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15299 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15300 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15301 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15302 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15303 complain = complain_overflow_unsigned;
15304 if (howto->complain_on_overflow != complain)
15306 alt_howto = *howto;
15307 alt_howto.complain_on_overflow = complain;
15308 howto = &alt_howto;
15312 if (r_type == R_PPC64_REL16DX_HA)
15314 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15315 if (rel->r_offset + 4 > input_section->size)
15316 r = bfd_reloc_outofrange;
15319 relocation += addend;
15320 relocation -= (rel->r_offset
15321 + input_section->output_offset
15322 + input_section->output_section->vma);
15323 relocation = (bfd_signed_vma) relocation >> 16;
15324 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15326 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15327 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15329 if (relocation + 0x8000 > 0xffff)
15330 r = bfd_reloc_overflow;
15334 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15335 rel->r_offset, relocation, addend);
15337 if (r != bfd_reloc_ok)
15339 char *more_info = NULL;
15340 const char *reloc_name = howto->name;
15342 if (reloc_dest != DEST_NORMAL)
15344 more_info = bfd_malloc (strlen (reloc_name) + 8);
15345 if (more_info != NULL)
15347 strcpy (more_info, reloc_name);
15348 strcat (more_info, (reloc_dest == DEST_OPD
15349 ? " (OPD)" : " (stub)"));
15350 reloc_name = more_info;
15354 if (r == bfd_reloc_overflow)
15356 /* On code like "if (foo) foo();" don't report overflow
15357 on a branch to zero when foo is undefined. */
15359 && (reloc_dest == DEST_STUB
15361 && (h->elf.root.type == bfd_link_hash_undefweak
15362 || h->elf.root.type == bfd_link_hash_undefined)
15363 && is_branch_reloc (r_type))))
15364 info->callbacks->reloc_overflow (info, &h->elf.root,
15365 sym_name, reloc_name,
15367 input_bfd, input_section,
15372 info->callbacks->einfo
15373 /* xgettext:c-format */
15374 (_("%H: %s against `%T': error %d\n"),
15375 input_bfd, input_section, rel->r_offset,
15376 reloc_name, sym_name, (int) r);
15379 if (more_info != NULL)
15389 Elf_Internal_Shdr *rel_hdr;
15390 size_t deleted = rel - wrel;
15392 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15393 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15394 if (rel_hdr->sh_size == 0)
15396 /* It is too late to remove an empty reloc section. Leave
15398 ??? What is wrong with an empty section??? */
15399 rel_hdr->sh_size = rel_hdr->sh_entsize;
15402 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15403 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15404 input_section->reloc_count -= deleted;
15407 /* If we're emitting relocations, then shortly after this function
15408 returns, reloc offsets and addends for this section will be
15409 adjusted. Worse, reloc symbol indices will be for the output
15410 file rather than the input. Save a copy of the relocs for
15411 opd_entry_value. */
15412 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15415 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15416 rel = bfd_alloc (input_bfd, amt);
15417 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15418 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15421 memcpy (rel, relocs, amt);
15426 /* Adjust the value of any local symbols in opd sections. */
15429 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15430 const char *name ATTRIBUTE_UNUSED,
15431 Elf_Internal_Sym *elfsym,
15432 asection *input_sec,
15433 struct elf_link_hash_entry *h)
15435 struct _opd_sec_data *opd;
15442 opd = get_opd_info (input_sec);
15443 if (opd == NULL || opd->adjust == NULL)
15446 value = elfsym->st_value - input_sec->output_offset;
15447 if (!bfd_link_relocatable (info))
15448 value -= input_sec->output_section->vma;
15450 adjust = opd->adjust[OPD_NDX (value)];
15454 elfsym->st_value += adjust;
15458 /* Finish up dynamic symbol handling. We set the contents of various
15459 dynamic sections here. */
15462 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15463 struct bfd_link_info *info,
15464 struct elf_link_hash_entry *h,
15465 Elf_Internal_Sym *sym)
15467 struct ppc_link_hash_table *htab;
15468 struct plt_entry *ent;
15469 Elf_Internal_Rela rela;
15472 htab = ppc_hash_table (info);
15476 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15477 if (ent->plt.offset != (bfd_vma) -1)
15479 /* This symbol has an entry in the procedure linkage
15480 table. Set it up. */
15481 if (!htab->elf.dynamic_sections_created
15482 || h->dynindx == -1)
15484 BFD_ASSERT (h->type == STT_GNU_IFUNC
15486 && (h->root.type == bfd_link_hash_defined
15487 || h->root.type == bfd_link_hash_defweak));
15488 rela.r_offset = (htab->elf.iplt->output_section->vma
15489 + htab->elf.iplt->output_offset
15490 + ent->plt.offset);
15492 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15494 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15495 rela.r_addend = (h->root.u.def.value
15496 + h->root.u.def.section->output_offset
15497 + h->root.u.def.section->output_section->vma
15499 loc = (htab->elf.irelplt->contents
15500 + (htab->elf.irelplt->reloc_count++
15501 * sizeof (Elf64_External_Rela)));
15502 htab->local_ifunc_resolver = 1;
15506 rela.r_offset = (htab->elf.splt->output_section->vma
15507 + htab->elf.splt->output_offset
15508 + ent->plt.offset);
15509 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15510 rela.r_addend = ent->addend;
15511 loc = (htab->elf.srelplt->contents
15512 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15513 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15514 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15515 htab->maybe_local_ifunc_resolver = 1;
15517 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15519 if (!htab->opd_abi)
15521 if (!h->def_regular)
15523 /* Mark the symbol as undefined, rather than as
15524 defined in glink. Leave the value if there were
15525 any relocations where pointer equality matters
15526 (this is a clue for the dynamic linker, to make
15527 function pointer comparisons work between an
15528 application and shared library), otherwise set it
15530 sym->st_shndx = SHN_UNDEF;
15531 if (!h->pointer_equality_needed)
15533 else if (!h->ref_regular_nonweak)
15535 /* This breaks function pointer comparisons, but
15536 that is better than breaking tests for a NULL
15537 function pointer. */
15546 /* This symbol needs a copy reloc. Set it up. */
15549 if (h->dynindx == -1
15550 || (h->root.type != bfd_link_hash_defined
15551 && h->root.type != bfd_link_hash_defweak)
15552 || htab->elf.srelbss == NULL
15553 || htab->elf.sreldynrelro == NULL)
15556 rela.r_offset = (h->root.u.def.value
15557 + h->root.u.def.section->output_section->vma
15558 + h->root.u.def.section->output_offset);
15559 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15561 if (h->root.u.def.section == htab->elf.sdynrelro)
15562 srel = htab->elf.sreldynrelro;
15564 srel = htab->elf.srelbss;
15565 loc = srel->contents;
15566 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15567 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15573 /* Used to decide how to sort relocs in an optimal manner for the
15574 dynamic linker, before writing them out. */
15576 static enum elf_reloc_type_class
15577 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15578 const asection *rel_sec,
15579 const Elf_Internal_Rela *rela)
15581 enum elf_ppc64_reloc_type r_type;
15582 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15584 if (rel_sec == htab->elf.irelplt)
15585 return reloc_class_ifunc;
15587 r_type = ELF64_R_TYPE (rela->r_info);
15590 case R_PPC64_RELATIVE:
15591 return reloc_class_relative;
15592 case R_PPC64_JMP_SLOT:
15593 return reloc_class_plt;
15595 return reloc_class_copy;
15597 return reloc_class_normal;
15601 /* Finish up the dynamic sections. */
15604 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15605 struct bfd_link_info *info)
15607 struct ppc_link_hash_table *htab;
15611 htab = ppc_hash_table (info);
15615 dynobj = htab->elf.dynobj;
15616 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15618 if (htab->elf.dynamic_sections_created)
15620 Elf64_External_Dyn *dyncon, *dynconend;
15622 if (sdyn == NULL || htab->elf.sgot == NULL)
15625 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15626 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15627 for (; dyncon < dynconend; dyncon++)
15629 Elf_Internal_Dyn dyn;
15632 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15639 case DT_PPC64_GLINK:
15641 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15642 /* We stupidly defined DT_PPC64_GLINK to be the start
15643 of glink rather than the first entry point, which is
15644 what ld.so needs, and now have a bigger stub to
15645 support automatic multiple TOCs. */
15646 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15650 s = bfd_get_section_by_name (output_bfd, ".opd");
15653 dyn.d_un.d_ptr = s->vma;
15657 if (htab->do_multi_toc && htab->multi_toc_needed)
15658 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15659 if (htab->has_plt_localentry0)
15660 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15663 case DT_PPC64_OPDSZ:
15664 s = bfd_get_section_by_name (output_bfd, ".opd");
15667 dyn.d_un.d_val = s->size;
15671 s = htab->elf.splt;
15672 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15676 s = htab->elf.srelplt;
15677 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15681 dyn.d_un.d_val = htab->elf.srelplt->size;
15685 if (htab->local_ifunc_resolver)
15686 info->callbacks->einfo
15687 (_("%X%P: text relocations and GNU indirect "
15688 "functions will result in a segfault at runtime\n"));
15689 else if (htab->maybe_local_ifunc_resolver)
15690 info->callbacks->einfo
15691 (_("%P: warning: text relocations and GNU indirect "
15692 "functions may result in a segfault at runtime\n"));
15696 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15700 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15701 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15703 /* Fill in the first entry in the global offset table.
15704 We use it to hold the link-time TOCbase. */
15705 bfd_put_64 (output_bfd,
15706 elf_gp (output_bfd) + TOC_BASE_OFF,
15707 htab->elf.sgot->contents);
15709 /* Set .got entry size. */
15710 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15713 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15714 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15716 /* Set .plt entry size. */
15717 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15718 = PLT_ENTRY_SIZE (htab);
15721 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15722 brlt ourselves if emitrelocations. */
15723 if (htab->brlt != NULL
15724 && htab->brlt->reloc_count != 0
15725 && !_bfd_elf_link_output_relocs (output_bfd,
15727 elf_section_data (htab->brlt)->rela.hdr,
15728 elf_section_data (htab->brlt)->relocs,
15732 if (htab->glink != NULL
15733 && htab->glink->reloc_count != 0
15734 && !_bfd_elf_link_output_relocs (output_bfd,
15736 elf_section_data (htab->glink)->rela.hdr,
15737 elf_section_data (htab->glink)->relocs,
15741 if (htab->glink_eh_frame != NULL
15742 && htab->glink_eh_frame->size != 0)
15746 asection *stub_sec;
15749 p = htab->glink_eh_frame->contents;
15750 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15751 for (stub_sec = htab->params->stub_bfd->sections;
15753 stub_sec = stub_sec->next)
15754 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15760 /* Offset to stub section. */
15761 val = (stub_sec->output_section->vma
15762 + stub_sec->output_offset);
15763 val -= (htab->glink_eh_frame->output_section->vma
15764 + htab->glink_eh_frame->output_offset
15765 + (p - htab->glink_eh_frame->contents));
15766 if (val + 0x80000000 > 0xffffffff)
15768 info->callbacks->einfo
15769 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15773 bfd_put_32 (dynobj, val, p);
15775 /* stub section size. */
15777 /* Augmentation. */
15780 p += ((17 + align - 1) & -align) - 17;
15782 if (htab->glink != NULL && htab->glink->size != 0)
15788 /* Offset to .glink. */
15789 val = (htab->glink->output_section->vma
15790 + htab->glink->output_offset
15792 val -= (htab->glink_eh_frame->output_section->vma
15793 + htab->glink_eh_frame->output_offset
15794 + (p - htab->glink_eh_frame->contents));
15795 if (val + 0x80000000 > 0xffffffff)
15797 info->callbacks->einfo
15798 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15799 htab->glink->name);
15802 bfd_put_32 (dynobj, val, p);
15806 /* Augmentation. */
15810 p += ((24 + align - 1) & -align) - 24;
15813 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15814 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15815 htab->glink_eh_frame,
15816 htab->glink_eh_frame->contents))
15820 /* We need to handle writing out multiple GOT sections ourselves,
15821 since we didn't add them to DYNOBJ. We know dynobj is the first
15823 while ((dynobj = dynobj->link.next) != NULL)
15827 if (!is_ppc64_elf (dynobj))
15830 s = ppc64_elf_tdata (dynobj)->got;
15833 && s->output_section != bfd_abs_section_ptr
15834 && !bfd_set_section_contents (output_bfd, s->output_section,
15835 s->contents, s->output_offset,
15838 s = ppc64_elf_tdata (dynobj)->relgot;
15841 && s->output_section != bfd_abs_section_ptr
15842 && !bfd_set_section_contents (output_bfd, s->output_section,
15843 s->contents, s->output_offset,
15851 #include "elf64-target.h"
15853 /* FreeBSD support */
15855 #undef TARGET_LITTLE_SYM
15856 #undef TARGET_LITTLE_NAME
15858 #undef TARGET_BIG_SYM
15859 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15860 #undef TARGET_BIG_NAME
15861 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15864 #define ELF_OSABI ELFOSABI_FREEBSD
15867 #define elf64_bed elf64_powerpc_fbsd_bed
15869 #include "elf64-target.h"