1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
124 #define elf_backend_get_reloc_section bfd_get_section_by_name
126 /* The name of the dynamic interpreter. This is put in the .interp
128 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
130 /* The size in bytes of an entry in the procedure linkage table. */
131 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
133 /* The initial size of the plt reserved for the dynamic linker. */
134 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
136 /* Offsets to some stack save slots. */
138 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
139 /* This one is dodgy. ELFv2 does not have a linker word, so use the
140 CR save slot. Used only by optimised __tls_get_addr call stub,
141 relying on __tls_get_addr_opt not saving CR.. */
142 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
144 /* TOC base pointers offset from start of TOC. */
145 #define TOC_BASE_OFF 0x8000
146 /* TOC base alignment. */
147 #define TOC_BASE_ALIGN 256
149 /* Offset of tp and dtp pointers from start of TLS block. */
150 #define TP_OFFSET 0x7000
151 #define DTP_OFFSET 0x8000
153 /* .plt call stub instructions. The normal stub is like this, but
154 sometimes the .plt entry crosses a 64k boundary and we need to
155 insert an addi to adjust r11. */
156 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
157 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
158 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
159 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
160 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
161 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
162 #define BCTR 0x4e800420 /* bctr */
164 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
165 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
166 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
168 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
169 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
170 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
171 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
172 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
173 #define BNECTR 0x4ca20420 /* bnectr+ */
174 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
176 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
177 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
178 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
180 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
181 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
182 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
184 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
185 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
186 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
187 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
188 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
190 /* glink call stub instructions. We enter with the index in R0. */
191 #define GLINK_CALL_STUB_SIZE (16*4)
195 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
196 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
198 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
199 /* ld %2,(0b-1b)(%11) */
200 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
201 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
207 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
208 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
209 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
210 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
211 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
214 #define NOP 0x60000000
216 /* Some other nops. */
217 #define CROR_151515 0x4def7b82
218 #define CROR_313131 0x4ffffb82
220 /* .glink entries for the first 32k functions are two instructions. */
221 #define LI_R0_0 0x38000000 /* li %r0,0 */
222 #define B_DOT 0x48000000 /* b . */
224 /* After that, we need two instructions to load the index, followed by
226 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
227 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
229 /* Instructions used by the save and restore reg functions. */
230 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
231 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
232 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
233 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
234 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
235 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
236 #define LI_R12_0 0x39800000 /* li %r12,0 */
237 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
238 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
239 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
240 #define BLR 0x4e800020 /* blr */
242 /* Since .opd is an array of descriptors and each entry will end up
243 with identical R_PPC64_RELATIVE relocs, there is really no need to
244 propagate .opd relocs; The dynamic linker should be taught to
245 relocate .opd without reloc entries. */
246 #ifndef NO_OPD_RELOCS
247 #define NO_OPD_RELOCS 0
251 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
255 abiversion (bfd *abfd)
257 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
261 set_abiversion (bfd *abfd, int ver)
263 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
264 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
267 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
269 /* Relocation HOWTO's. */
270 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
272 static reloc_howto_type ppc64_elf_howto_raw[] = {
273 /* This reloc does nothing. */
274 HOWTO (R_PPC64_NONE, /* type */
276 3, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_dont, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_NONE", /* name */
283 FALSE, /* partial_inplace */
286 FALSE), /* pcrel_offset */
288 /* A standard 32 bit relocation. */
289 HOWTO (R_PPC64_ADDR32, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_bitfield, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_PPC64_ADDR32", /* name */
298 FALSE, /* partial_inplace */
300 0xffffffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 /* An absolute 26 bit branch; the lower two bits must be zero.
304 FIXME: we don't check that, we just clear them. */
305 HOWTO (R_PPC64_ADDR24, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR24", /* name */
314 FALSE, /* partial_inplace */
316 0x03fffffc, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A standard 16 bit relocation. */
320 HOWTO (R_PPC64_ADDR16, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_bitfield, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* A 16 bit relocation without overflow. */
335 HOWTO (R_PPC64_ADDR16_LO, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_dont,/* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_LO", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address. */
350 HOWTO (R_PPC64_ADDR16_HI, /* type */
352 1, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE, /* pc_relative */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC64_ADDR16_HI", /* name */
359 FALSE, /* partial_inplace */
361 0xffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
364 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
365 bits, treated as a signed number, is negative. */
366 HOWTO (R_PPC64_ADDR16_HA, /* type */
368 1, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_signed, /* complain_on_overflow */
373 ppc64_elf_ha_reloc, /* special_function */
374 "R_PPC64_ADDR16_HA", /* name */
375 FALSE, /* partial_inplace */
377 0xffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 /* An absolute 16 bit branch; the lower two bits must be zero.
381 FIXME: we don't check that, we just clear them. */
382 HOWTO (R_PPC64_ADDR14, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 FALSE, /* pc_relative */
388 complain_overflow_signed, /* complain_on_overflow */
389 ppc64_elf_branch_reloc, /* special_function */
390 "R_PPC64_ADDR14", /* name */
391 FALSE, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 FALSE), /* pcrel_offset */
396 /* An absolute 16 bit branch, for which bit 10 should be set to
397 indicate that the branch is expected to be taken. The lower two
398 bits must be zero. */
399 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 FALSE, /* pc_relative */
405 complain_overflow_signed, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc, /* special_function */
407 "R_PPC64_ADDR14_BRTAKEN",/* name */
408 FALSE, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 FALSE), /* pcrel_offset */
413 /* An absolute 16 bit branch, for which bit 10 should be set to
414 indicate that the branch is not expected to be taken. The lower
415 two bits must be zero. */
416 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 FALSE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_brtaken_reloc, /* special_function */
424 "R_PPC64_ADDR14_BRNTAKEN",/* name */
425 FALSE, /* partial_inplace */
427 0x0000fffc, /* dst_mask */
428 FALSE), /* pcrel_offset */
430 /* A relative 26 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL24, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL24", /* name */
440 FALSE, /* partial_inplace */
442 0x03fffffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch; the lower two bits must be zero. */
446 HOWTO (R_PPC64_REL14, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE, /* pc_relative */
452 complain_overflow_signed, /* complain_on_overflow */
453 ppc64_elf_branch_reloc, /* special_function */
454 "R_PPC64_REL14", /* name */
455 FALSE, /* partial_inplace */
457 0x0000fffc, /* dst_mask */
458 TRUE), /* pcrel_offset */
460 /* A relative 16 bit branch. Bit 10 should be set to indicate that
461 the branch is expected to be taken. The lower two bits must be
463 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
467 TRUE, /* pc_relative */
469 complain_overflow_signed, /* complain_on_overflow */
470 ppc64_elf_brtaken_reloc, /* special_function */
471 "R_PPC64_REL14_BRTAKEN", /* name */
472 FALSE, /* partial_inplace */
474 0x0000fffc, /* dst_mask */
475 TRUE), /* pcrel_offset */
477 /* A relative 16 bit branch. Bit 10 should be set to indicate that
478 the branch is not expected to be taken. The lower two bits must
480 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 TRUE, /* pc_relative */
486 complain_overflow_signed, /* complain_on_overflow */
487 ppc64_elf_brtaken_reloc, /* special_function */
488 "R_PPC64_REL14_BRNTAKEN",/* name */
489 FALSE, /* partial_inplace */
491 0x0000fffc, /* dst_mask */
492 TRUE), /* pcrel_offset */
494 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
496 HOWTO (R_PPC64_GOT16, /* type */
498 1, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_signed, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_GOT16", /* name */
505 FALSE, /* partial_inplace */
507 0xffff, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
512 HOWTO (R_PPC64_GOT16_LO, /* type */
514 1, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_GOT16_LO", /* name */
521 FALSE, /* partial_inplace */
523 0xffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
528 HOWTO (R_PPC64_GOT16_HI, /* type */
530 1, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE, /* pc_relative */
534 complain_overflow_signed,/* complain_on_overflow */
535 ppc64_elf_unhandled_reloc, /* special_function */
536 "R_PPC64_GOT16_HI", /* name */
537 FALSE, /* partial_inplace */
539 0xffff, /* dst_mask */
540 FALSE), /* pcrel_offset */
542 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
544 HOWTO (R_PPC64_GOT16_HA, /* type */
546 1, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_signed,/* complain_on_overflow */
551 ppc64_elf_unhandled_reloc, /* special_function */
552 "R_PPC64_GOT16_HA", /* name */
553 FALSE, /* partial_inplace */
555 0xffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* This is used only by the dynamic linker. The symbol should exist
559 both in the object being run and in some shared library. The
560 dynamic linker copies the data addressed by the symbol from the
561 shared library into the object, because the object being
562 run has to have the data at some particular address. */
563 HOWTO (R_PPC64_COPY, /* type */
565 0, /* this one is variable size */
567 FALSE, /* pc_relative */
569 complain_overflow_dont, /* complain_on_overflow */
570 ppc64_elf_unhandled_reloc, /* special_function */
571 "R_PPC64_COPY", /* name */
572 FALSE, /* partial_inplace */
575 FALSE), /* pcrel_offset */
577 /* Like R_PPC64_ADDR64, but used when setting global offset table
579 HOWTO (R_PPC64_GLOB_DAT, /* type */
581 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
583 FALSE, /* pc_relative */
585 complain_overflow_dont, /* complain_on_overflow */
586 ppc64_elf_unhandled_reloc, /* special_function */
587 "R_PPC64_GLOB_DAT", /* name */
588 FALSE, /* partial_inplace */
590 ONES (64), /* dst_mask */
591 FALSE), /* pcrel_offset */
593 /* Created by the link editor. Marks a procedure linkage table
594 entry for a symbol. */
595 HOWTO (R_PPC64_JMP_SLOT, /* type */
597 0, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE, /* pc_relative */
601 complain_overflow_dont, /* complain_on_overflow */
602 ppc64_elf_unhandled_reloc, /* special_function */
603 "R_PPC64_JMP_SLOT", /* name */
604 FALSE, /* partial_inplace */
607 FALSE), /* pcrel_offset */
609 /* Used only by the dynamic linker. When the object is run, this
610 doubleword64 is set to the load address of the object, plus the
612 HOWTO (R_PPC64_RELATIVE, /* type */
614 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
616 FALSE, /* pc_relative */
618 complain_overflow_dont, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_RELATIVE", /* name */
621 FALSE, /* partial_inplace */
623 ONES (64), /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR32, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR32, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR32", /* name */
636 FALSE, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16, but may be unaligned. */
642 HOWTO (R_PPC64_UADDR16, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_UADDR16", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* 32-bit PC relative. */
657 HOWTO (R_PPC64_REL32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 TRUE, /* pc_relative */
663 complain_overflow_signed, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC64_REL32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
671 /* 32-bit relocation to the symbol's procedure linkage table. */
672 HOWTO (R_PPC64_PLT32, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE, /* pc_relative */
678 complain_overflow_bitfield, /* complain_on_overflow */
679 ppc64_elf_unhandled_reloc, /* special_function */
680 "R_PPC64_PLT32", /* name */
681 FALSE, /* partial_inplace */
683 0xffffffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
686 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
687 FIXME: R_PPC64_PLTREL32 not supported. */
688 HOWTO (R_PPC64_PLTREL32, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 TRUE, /* pc_relative */
694 complain_overflow_signed, /* complain_on_overflow */
695 ppc64_elf_unhandled_reloc, /* special_function */
696 "R_PPC64_PLTREL32", /* name */
697 FALSE, /* partial_inplace */
699 0xffffffff, /* dst_mask */
700 TRUE), /* pcrel_offset */
702 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
704 HOWTO (R_PPC64_PLT16_LO, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 ppc64_elf_unhandled_reloc, /* special_function */
712 "R_PPC64_PLT16_LO", /* name */
713 FALSE, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE), /* pcrel_offset */
718 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
720 HOWTO (R_PPC64_PLT16_HI, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_signed, /* complain_on_overflow */
727 ppc64_elf_unhandled_reloc, /* special_function */
728 "R_PPC64_PLT16_HI", /* name */
729 FALSE, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
736 HOWTO (R_PPC64_PLT16_HA, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_unhandled_reloc, /* special_function */
744 "R_PPC64_PLT16_HA", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* 16-bit section relative relocation. */
751 HOWTO (R_PPC64_SECTOFF, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_signed, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* Like R_PPC64_SECTOFF, but no overflow warning. */
766 HOWTO (R_PPC64_SECTOFF_LO, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_dont, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_LO", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HI, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HI", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* 16-bit upper half adjusted section relative relocation. */
796 HOWTO (R_PPC64_SECTOFF_HA, /* type */
798 1, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE, /* pc_relative */
802 complain_overflow_signed, /* complain_on_overflow */
803 ppc64_elf_sectoff_ha_reloc, /* special_function */
804 "R_PPC64_SECTOFF_HA", /* name */
805 FALSE, /* partial_inplace */
807 0xffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
810 /* Like R_PPC64_REL24 without touching the two least significant bits. */
811 HOWTO (R_PPC64_REL30, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE, /* pc_relative */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_PPC64_REL30", /* name */
820 FALSE, /* partial_inplace */
822 0xfffffffc, /* dst_mask */
823 TRUE), /* pcrel_offset */
825 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
827 /* A standard 64-bit relocation. */
828 HOWTO (R_PPC64_ADDR64, /* type */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR64", /* name */
837 FALSE, /* partial_inplace */
839 ONES (64), /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address. */
843 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
845 1, /* size (0 = byte, 1 = short, 2 = long) */
847 FALSE, /* pc_relative */
849 complain_overflow_dont, /* complain_on_overflow */
850 bfd_elf_generic_reloc, /* special_function */
851 "R_PPC64_ADDR16_HIGHER", /* name */
852 FALSE, /* partial_inplace */
854 0xffff, /* dst_mask */
855 FALSE), /* pcrel_offset */
857 /* The bits 32-47 of an address, plus 1 if the contents of the low
858 16 bits, treated as a signed number, is negative. */
859 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 ppc64_elf_ha_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHERA", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address. */
874 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
878 FALSE, /* pc_relative */
880 complain_overflow_dont, /* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_PPC64_ADDR16_HIGHEST", /* name */
883 FALSE, /* partial_inplace */
885 0xffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* The bits 48-63 of an address, plus 1 if the contents of the low
889 16 bits, treated as a signed number, is negative. */
890 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 ppc64_elf_ha_reloc, /* special_function */
898 "R_PPC64_ADDR16_HIGHESTA", /* name */
899 FALSE, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* Like ADDR64, but may be unaligned. */
905 HOWTO (R_PPC64_UADDR64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 FALSE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_UADDR64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 FALSE), /* pcrel_offset */
919 /* 64-bit relative relocation. */
920 HOWTO (R_PPC64_REL64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 TRUE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 bfd_elf_generic_reloc, /* special_function */
928 "R_PPC64_REL64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 TRUE), /* pcrel_offset */
934 /* 64-bit relocation to the symbol's procedure linkage table. */
935 HOWTO (R_PPC64_PLT64, /* type */
937 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_unhandled_reloc, /* special_function */
943 "R_PPC64_PLT64", /* name */
944 FALSE, /* partial_inplace */
946 ONES (64), /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 64-bit PC relative relocation to the symbol's procedure linkage
951 /* FIXME: R_PPC64_PLTREL64 not supported. */
952 HOWTO (R_PPC64_PLTREL64, /* type */
954 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
956 TRUE, /* pc_relative */
958 complain_overflow_dont, /* complain_on_overflow */
959 ppc64_elf_unhandled_reloc, /* special_function */
960 "R_PPC64_PLTREL64", /* name */
961 FALSE, /* partial_inplace */
963 ONES (64), /* dst_mask */
964 TRUE), /* pcrel_offset */
966 /* 16 bit TOC-relative relocation. */
968 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
969 HOWTO (R_PPC64_TOC16, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE, /* pc_relative */
975 complain_overflow_signed, /* complain_on_overflow */
976 ppc64_elf_toc_reloc, /* special_function */
977 "R_PPC64_TOC16", /* name */
978 FALSE, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE), /* pcrel_offset */
983 /* 16 bit TOC-relative relocation without overflow. */
985 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
986 HOWTO (R_PPC64_TOC16_LO, /* type */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc64_elf_toc_reloc, /* special_function */
994 "R_PPC64_TOC16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* 16 bit TOC-relative relocation, high 16 bits. */
1002 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1003 HOWTO (R_PPC64_TOC16_HI, /* type */
1004 16, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_signed, /* complain_on_overflow */
1010 ppc64_elf_toc_reloc, /* special_function */
1011 "R_PPC64_TOC16_HI", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1018 contents of the low 16 bits, treated as a signed number, is
1021 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1022 HOWTO (R_PPC64_TOC16_HA, /* type */
1023 16, /* rightshift */
1024 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 FALSE, /* pc_relative */
1028 complain_overflow_signed, /* complain_on_overflow */
1029 ppc64_elf_toc_ha_reloc, /* special_function */
1030 "R_PPC64_TOC16_HA", /* name */
1031 FALSE, /* partial_inplace */
1033 0xffff, /* dst_mask */
1034 FALSE), /* pcrel_offset */
1036 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1038 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1039 HOWTO (R_PPC64_TOC, /* type */
1041 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1043 FALSE, /* pc_relative */
1045 complain_overflow_dont, /* complain_on_overflow */
1046 ppc64_elf_toc64_reloc, /* special_function */
1047 "R_PPC64_TOC", /* name */
1048 FALSE, /* partial_inplace */
1050 ONES (64), /* dst_mask */
1051 FALSE), /* pcrel_offset */
1053 /* Like R_PPC64_GOT16, but also informs the link editor that the
1054 value to relocate may (!) refer to a PLT entry which the link
1055 editor (a) may replace with the symbol value. If the link editor
1056 is unable to fully resolve the symbol, it may (b) create a PLT
1057 entry and store the address to the new PLT entry in the GOT.
1058 This permits lazy resolution of function symbols at run time.
1059 The link editor may also skip all of this and just (c) emit a
1060 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1061 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1062 HOWTO (R_PPC64_PLTGOT16, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_signed, /* complain_on_overflow */
1069 ppc64_elf_unhandled_reloc, /* special_function */
1070 "R_PPC64_PLTGOT16", /* name */
1071 FALSE, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* Like R_PPC64_PLTGOT16, but without overflow. */
1077 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1078 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc64_elf_unhandled_reloc, /* special_function */
1086 "R_PPC64_PLTGOT16_LO", /* name */
1087 FALSE, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1092 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1093 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1094 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc64_elf_unhandled_reloc, /* special_function */
1102 "R_PPC64_PLTGOT16_HI", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1109 1 if the contents of the low 16 bits, treated as a signed number,
1111 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1112 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1113 16, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 ppc64_elf_unhandled_reloc, /* special_function */
1120 "R_PPC64_PLTGOT16_HA", /* name */
1121 FALSE, /* partial_inplace */
1123 0xffff, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_DS", /* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_PPC64_ADDR16_LO_DS",/* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_signed, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_GOT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc64_elf_unhandled_reloc, /* special_function */
1195 "R_PPC64_PLT16_LO_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_signed, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_DS", /* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc64_elf_sectoff_reloc, /* special_function */
1225 "R_PPC64_SECTOFF_LO_DS",/* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_signed, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1247 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1249 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE, /* pc_relative */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 ppc64_elf_toc_reloc, /* special_function */
1255 "R_PPC64_TOC16_LO_DS", /* name */
1256 FALSE, /* partial_inplace */
1258 0xfffc, /* dst_mask */
1259 FALSE), /* pcrel_offset */
1261 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1262 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1263 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_signed, /* complain_on_overflow */
1270 ppc64_elf_unhandled_reloc, /* special_function */
1271 "R_PPC64_PLTGOT16_DS", /* name */
1272 FALSE, /* partial_inplace */
1274 0xfffc, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1278 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1279 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 ppc64_elf_unhandled_reloc, /* special_function */
1287 "R_PPC64_PLTGOT16_LO_DS",/* name */
1288 FALSE, /* partial_inplace */
1290 0xfffc, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1293 /* Marker relocs for TLS. */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_PPC64_TLS", /* name */
1303 FALSE, /* partial_inplace */
1306 FALSE), /* pcrel_offset */
1308 HOWTO (R_PPC64_TLSGD,
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE, /* pc_relative */
1314 complain_overflow_dont, /* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_PPC64_TLSGD", /* name */
1317 FALSE, /* partial_inplace */
1320 FALSE), /* pcrel_offset */
1322 HOWTO (R_PPC64_TLSLD,
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_dont, /* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_PPC64_TLSLD", /* name */
1331 FALSE, /* partial_inplace */
1334 FALSE), /* pcrel_offset */
1336 HOWTO (R_PPC64_TOCSAVE,
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_dont, /* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_PPC64_TOCSAVE", /* name */
1345 FALSE, /* partial_inplace */
1348 FALSE), /* pcrel_offset */
1350 /* Computes the load module index of the load module that contains the
1351 definition of its TLS sym. */
1352 HOWTO (R_PPC64_DTPMOD64,
1354 4, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE, /* pc_relative */
1358 complain_overflow_dont, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc, /* special_function */
1360 "R_PPC64_DTPMOD64", /* name */
1361 FALSE, /* partial_inplace */
1363 ONES (64), /* dst_mask */
1364 FALSE), /* pcrel_offset */
1366 /* Computes a dtv-relative displacement, the difference between the value
1367 of sym+add and the base address of the thread-local storage block that
1368 contains the definition of sym, minus 0x8000. */
1369 HOWTO (R_PPC64_DTPREL64,
1371 4, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_dont, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL64", /* name */
1378 FALSE, /* partial_inplace */
1380 ONES (64), /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* A 16 bit dtprel reloc. */
1384 HOWTO (R_PPC64_DTPREL16,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_signed, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16, but no overflow. */
1399 HOWTO (R_PPC64_DTPREL16_LO,
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_dont, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_LO", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HI,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HI", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HA,
1430 16, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_signed, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HA", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHER,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHER", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1460 32, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHERA", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHEST", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1489 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1490 48, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_dont, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1498 FALSE, /* partial_inplace */
1500 0xffff, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16, but for insns with a DS field. */
1504 HOWTO (R_PPC64_DTPREL16_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_signed, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Like DTPREL16_DS, but no overflow. */
1519 HOWTO (R_PPC64_DTPREL16_LO_DS,
1521 1, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE, /* pc_relative */
1525 complain_overflow_dont, /* complain_on_overflow */
1526 ppc64_elf_unhandled_reloc, /* special_function */
1527 "R_PPC64_DTPREL16_LO_DS", /* name */
1528 FALSE, /* partial_inplace */
1530 0xfffc, /* dst_mask */
1531 FALSE), /* pcrel_offset */
1533 /* Computes a tp-relative displacement, the difference between the value of
1534 sym+add and the value of the thread pointer (r13). */
1535 HOWTO (R_PPC64_TPREL64,
1537 4, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_dont, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL64", /* name */
1544 FALSE, /* partial_inplace */
1546 ONES (64), /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* A 16 bit tprel reloc. */
1550 HOWTO (R_PPC64_TPREL16,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_signed, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16, but no overflow. */
1565 HOWTO (R_PPC64_TPREL16_LO,
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_dont, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_LO", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_LO, but next higher group of 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HI,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HI", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but adjust for low 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HA,
1596 16, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_signed, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HA", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HI, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHER,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHER", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHERA,
1626 32, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHERA", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHEST,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHEST", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1655 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1656 48, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_HIGHESTA", /* name */
1664 FALSE, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16, but for insns with a DS field. */
1670 HOWTO (R_PPC64_TPREL16_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_signed, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Like TPREL16_DS, but no overflow. */
1685 HOWTO (R_PPC64_TPREL16_LO_DS,
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE, /* pc_relative */
1691 complain_overflow_dont, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc, /* special_function */
1693 "R_PPC64_TPREL16_LO_DS", /* name */
1694 FALSE, /* partial_inplace */
1696 0xfffc, /* dst_mask */
1697 FALSE), /* pcrel_offset */
1699 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1700 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1701 to the first entry relative to the TOC base (r2). */
1702 HOWTO (R_PPC64_GOT_TLSGD16,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_signed, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16, but no overflow. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_dont, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_LO", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HI", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1747 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1748 16, /* rightshift */
1749 1, /* size (0 = byte, 1 = short, 2 = long) */
1751 FALSE, /* pc_relative */
1753 complain_overflow_signed, /* complain_on_overflow */
1754 ppc64_elf_unhandled_reloc, /* special_function */
1755 "R_PPC64_GOT_TLSGD16_HA", /* name */
1756 FALSE, /* partial_inplace */
1758 0xffff, /* dst_mask */
1759 FALSE), /* pcrel_offset */
1761 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1762 with values (sym+add)@dtpmod and zero, and computes the offset to the
1763 first entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TLSLD16,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_signed, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_dont, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_LO", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HI", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE, /* pc_relative */
1815 complain_overflow_signed, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc, /* special_function */
1817 "R_PPC64_GOT_TLSLD16_HA", /* name */
1818 FALSE, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE), /* pcrel_offset */
1823 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1824 the offset to the entry relative to the TOC base (r2). */
1825 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_signed, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_DS, but no overflow. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_dont, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1849 FALSE, /* partial_inplace */
1851 0xfffc, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HI", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1870 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1871 16, /* rightshift */
1872 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 FALSE, /* pc_relative */
1876 complain_overflow_signed, /* complain_on_overflow */
1877 ppc64_elf_unhandled_reloc, /* special_function */
1878 "R_PPC64_GOT_DTPREL16_HA", /* name */
1879 FALSE, /* partial_inplace */
1881 0xffff, /* dst_mask */
1882 FALSE), /* pcrel_offset */
1884 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1885 offset to the entry relative to the TOC base (r2). */
1886 HOWTO (R_PPC64_GOT_TPREL16_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_signed, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_DS, but no overflow. */
1901 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_dont, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1910 FALSE, /* partial_inplace */
1912 0xfffc, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HI,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HI", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1931 HOWTO (R_PPC64_GOT_TPREL16_HA,
1932 16, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE, /* pc_relative */
1937 complain_overflow_signed, /* complain_on_overflow */
1938 ppc64_elf_unhandled_reloc, /* special_function */
1939 "R_PPC64_GOT_TPREL16_HA", /* name */
1940 FALSE, /* partial_inplace */
1942 0xffff, /* dst_mask */
1943 FALSE), /* pcrel_offset */
1945 HOWTO (R_PPC64_JMP_IREL, /* type */
1947 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 FALSE, /* pc_relative */
1951 complain_overflow_dont, /* complain_on_overflow */
1952 ppc64_elf_unhandled_reloc, /* special_function */
1953 "R_PPC64_JMP_IREL", /* name */
1954 FALSE, /* partial_inplace */
1957 FALSE), /* pcrel_offset */
1959 HOWTO (R_PPC64_IRELATIVE, /* type */
1961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1963 FALSE, /* pc_relative */
1965 complain_overflow_dont, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_IRELATIVE", /* name */
1968 FALSE, /* partial_inplace */
1970 ONES (64), /* dst_mask */
1971 FALSE), /* pcrel_offset */
1973 /* A 16 bit relative relocation. */
1974 HOWTO (R_PPC64_REL16, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_signed, /* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* A 16 bit relative relocation without overflow. */
1989 HOWTO (R_PPC64_REL16_LO, /* type */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_dont,/* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_LO", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address. */
2004 HOWTO (R_PPC64_REL16_HI, /* type */
2005 16, /* rightshift */
2006 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 TRUE, /* pc_relative */
2010 complain_overflow_signed, /* complain_on_overflow */
2011 bfd_elf_generic_reloc, /* special_function */
2012 "R_PPC64_REL16_HI", /* name */
2013 FALSE, /* partial_inplace */
2015 0xffff, /* dst_mask */
2016 TRUE), /* pcrel_offset */
2018 /* The high order 16 bits of a relative address, plus 1 if the contents of
2019 the low 16 bits, treated as a signed number, is negative. */
2020 HOWTO (R_PPC64_REL16_HA, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 TRUE, /* pc_relative */
2026 complain_overflow_signed, /* complain_on_overflow */
2027 ppc64_elf_ha_reloc, /* special_function */
2028 "R_PPC64_REL16_HA", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 TRUE), /* pcrel_offset */
2034 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2035 HOWTO (R_PPC64_REL16DX_HA, /* type */
2036 16, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2039 TRUE, /* pc_relative */
2041 complain_overflow_signed, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_REL16DX_HA", /* name */
2044 FALSE, /* partial_inplace */
2046 0x1fffc1, /* dst_mask */
2047 TRUE), /* pcrel_offset */
2049 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
2050 HOWTO (R_PPC64_16DX_HA, /* type */
2051 16, /* rightshift */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_signed, /* complain_on_overflow */
2057 ppc64_elf_ha_reloc, /* special_function */
2058 "R_PPC64_16DX_HA", /* name */
2059 FALSE, /* partial_inplace */
2061 0x1fffc1, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2065 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 bfd_elf_generic_reloc, /* special_function */
2073 "R_PPC64_ADDR16_HIGH", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2080 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_ha_reloc, /* special_function */
2088 "R_PPC64_ADDR16_HIGHA", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2095 HOWTO (R_PPC64_DTPREL16_HIGH,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_DTPREL16_HIGH", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2110 HOWTO (R_PPC64_DTPREL16_HIGHA,
2111 16, /* rightshift */
2112 1, /* size (0 = byte, 1 = short, 2 = long) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 ppc64_elf_unhandled_reloc, /* special_function */
2118 "R_PPC64_DTPREL16_HIGHA", /* name */
2119 FALSE, /* partial_inplace */
2121 0xffff, /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2125 HOWTO (R_PPC64_TPREL16_HIGH,
2126 16, /* rightshift */
2127 1, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 ppc64_elf_unhandled_reloc, /* special_function */
2133 "R_PPC64_TPREL16_HIGH", /* name */
2134 FALSE, /* partial_inplace */
2136 0xffff, /* dst_mask */
2137 FALSE), /* pcrel_offset */
2139 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2140 HOWTO (R_PPC64_TPREL16_HIGHA,
2141 16, /* rightshift */
2142 1, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 ppc64_elf_unhandled_reloc, /* special_function */
2148 "R_PPC64_TPREL16_HIGHA", /* name */
2149 FALSE, /* partial_inplace */
2151 0xffff, /* dst_mask */
2152 FALSE), /* pcrel_offset */
2154 /* Marker reloc on ELFv2 large-model function entry. */
2155 HOWTO (R_PPC64_ENTRY,
2157 2, /* size (0 = byte, 1 = short, 2 = long) */
2159 FALSE, /* pc_relative */
2161 complain_overflow_dont, /* complain_on_overflow */
2162 bfd_elf_generic_reloc, /* special_function */
2163 "R_PPC64_ENTRY", /* name */
2164 FALSE, /* partial_inplace */
2167 FALSE), /* pcrel_offset */
2169 /* Like ADDR64, but use local entry point of function. */
2170 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2172 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2174 FALSE, /* pc_relative */
2176 complain_overflow_dont, /* complain_on_overflow */
2177 bfd_elf_generic_reloc, /* special_function */
2178 "R_PPC64_ADDR64_LOCAL", /* name */
2179 FALSE, /* partial_inplace */
2181 ONES (64), /* dst_mask */
2182 FALSE), /* pcrel_offset */
2184 /* GNU extension to record C++ vtable hierarchy. */
2185 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2187 0, /* size (0 = byte, 1 = short, 2 = long) */
2189 FALSE, /* pc_relative */
2191 complain_overflow_dont, /* complain_on_overflow */
2192 NULL, /* special_function */
2193 "R_PPC64_GNU_VTINHERIT", /* name */
2194 FALSE, /* partial_inplace */
2197 FALSE), /* pcrel_offset */
2199 /* GNU extension to record C++ vtable member usage. */
2200 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2202 0, /* size (0 = byte, 1 = short, 2 = long) */
2204 FALSE, /* pc_relative */
2206 complain_overflow_dont, /* complain_on_overflow */
2207 NULL, /* special_function */
2208 "R_PPC64_GNU_VTENTRY", /* name */
2209 FALSE, /* partial_inplace */
2212 FALSE), /* pcrel_offset */
2216 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2220 ppc_howto_init (void)
2222 unsigned int i, type;
2224 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2226 type = ppc64_elf_howto_raw[i].type;
2227 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2228 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2232 static reloc_howto_type *
2233 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2234 bfd_reloc_code_real_type code)
2236 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2238 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2239 /* Initialize howto table if needed. */
2247 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2249 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2251 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2253 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2255 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2257 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2259 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2261 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2263 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2265 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2267 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2269 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2271 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2273 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2275 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2277 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2279 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2281 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2283 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2285 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2287 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2289 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2291 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2293 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2295 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2297 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2299 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2301 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2303 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2305 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2307 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2309 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2311 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2313 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2315 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2317 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2319 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2321 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2323 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2325 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2327 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2329 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2331 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2333 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2335 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2337 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2339 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2341 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2343 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2345 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2347 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2349 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2351 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2353 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2355 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2357 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2359 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2361 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2363 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2365 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2367 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2369 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2371 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2373 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2375 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2377 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2379 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2381 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2383 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2385 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2387 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2389 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2391 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2393 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2395 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2397 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2399 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2401 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2403 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2405 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2407 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2409 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2411 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2413 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2415 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2417 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2419 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2421 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2423 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2425 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2427 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2429 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2431 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2433 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2435 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2437 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2439 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2441 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2443 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2445 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2447 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2449 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2451 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2453 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2455 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2457 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2459 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2461 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2463 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2465 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2467 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2469 case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA;
2471 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2473 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2475 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2477 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2479 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2483 return ppc64_elf_howto_table[r];
2486 static reloc_howto_type *
2487 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2492 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2493 if (ppc64_elf_howto_raw[i].name != NULL
2494 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2495 return &ppc64_elf_howto_raw[i];
2500 /* Set the howto pointer for a PowerPC ELF reloc. */
2503 ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
2504 Elf_Internal_Rela *dst)
2508 /* Initialize howto table if needed. */
2509 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2512 type = ELF64_R_TYPE (dst->r_info);
2513 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2515 /* xgettext:c-format */
2516 _bfd_error_handler (_("%B: invalid relocation type %d"),
2518 type = R_PPC64_NONE;
2520 cache_ptr->howto = ppc64_elf_howto_table[type];
2523 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2525 static bfd_reloc_status_type
2526 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2527 void *data, asection *input_section,
2528 bfd *output_bfd, char **error_message)
2530 enum elf_ppc64_reloc_type r_type;
2532 bfd_size_type octets;
2535 /* If this is a relocatable link (output_bfd test tells us), just
2536 call the generic function. Any adjustment will be done at final
2538 if (output_bfd != NULL)
2539 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2540 input_section, output_bfd, error_message);
2542 /* Adjust the addend for sign extension of the low 16 bits.
2543 We won't actually be using the low 16 bits, so trashing them
2545 reloc_entry->addend += 0x8000;
2546 r_type = reloc_entry->howto->type;
2547 if (r_type != R_PPC64_REL16DX_HA)
2548 return bfd_reloc_continue;
2551 if (!bfd_is_com_section (symbol->section))
2552 value = symbol->value;
2553 value += (reloc_entry->addend
2554 + symbol->section->output_offset
2555 + symbol->section->output_section->vma);
2556 value -= (reloc_entry->address
2557 + input_section->output_offset
2558 + input_section->output_section->vma);
2559 value = (bfd_signed_vma) value >> 16;
2561 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2562 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2564 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2565 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2566 if (value + 0x8000 > 0xffff)
2567 return bfd_reloc_overflow;
2568 return bfd_reloc_ok;
2571 static bfd_reloc_status_type
2572 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2573 void *data, asection *input_section,
2574 bfd *output_bfd, char **error_message)
2576 if (output_bfd != NULL)
2577 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2578 input_section, output_bfd, error_message);
2580 if (strcmp (symbol->section->name, ".opd") == 0
2581 && (symbol->section->owner->flags & DYNAMIC) == 0)
2583 bfd_vma dest = opd_entry_value (symbol->section,
2584 symbol->value + reloc_entry->addend,
2586 if (dest != (bfd_vma) -1)
2587 reloc_entry->addend = dest - (symbol->value
2588 + symbol->section->output_section->vma
2589 + symbol->section->output_offset);
2593 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2595 if (symbol->section->owner != abfd
2596 && symbol->section->owner != NULL
2597 && abiversion (symbol->section->owner) >= 2)
2601 for (i = 0; i < symbol->section->owner->symcount; ++i)
2603 asymbol *symdef = symbol->section->owner->outsymbols[i];
2605 if (strcmp (symdef->name, symbol->name) == 0)
2607 elfsym = (elf_symbol_type *) symdef;
2613 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2615 return bfd_reloc_continue;
2618 static bfd_reloc_status_type
2619 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2620 void *data, asection *input_section,
2621 bfd *output_bfd, char **error_message)
2624 enum elf_ppc64_reloc_type r_type;
2625 bfd_size_type octets;
2626 /* Assume 'at' branch hints. */
2627 bfd_boolean is_isa_v2 = TRUE;
2629 /* If this is a relocatable link (output_bfd test tells us), just
2630 call the generic function. Any adjustment will be done at final
2632 if (output_bfd != NULL)
2633 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2634 input_section, output_bfd, error_message);
2636 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2637 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2638 insn &= ~(0x01 << 21);
2639 r_type = reloc_entry->howto->type;
2640 if (r_type == R_PPC64_ADDR14_BRTAKEN
2641 || r_type == R_PPC64_REL14_BRTAKEN)
2642 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2646 /* Set 'a' bit. This is 0b00010 in BO field for branch
2647 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2648 for branch on CTR insns (BO == 1a00t or 1a01t). */
2649 if ((insn & (0x14 << 21)) == (0x04 << 21))
2651 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2661 if (!bfd_is_com_section (symbol->section))
2662 target = symbol->value;
2663 target += symbol->section->output_section->vma;
2664 target += symbol->section->output_offset;
2665 target += reloc_entry->addend;
2667 from = (reloc_entry->address
2668 + input_section->output_offset
2669 + input_section->output_section->vma);
2671 /* Invert 'y' bit if not the default. */
2672 if ((bfd_signed_vma) (target - from) < 0)
2675 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2677 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2678 input_section, output_bfd, error_message);
2681 static bfd_reloc_status_type
2682 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2683 void *data, asection *input_section,
2684 bfd *output_bfd, char **error_message)
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 /* Subtract the symbol section base address. */
2694 reloc_entry->addend -= symbol->section->output_section->vma;
2695 return bfd_reloc_continue;
2698 static bfd_reloc_status_type
2699 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2700 void *data, asection *input_section,
2701 bfd *output_bfd, char **error_message)
2703 /* If this is a relocatable link (output_bfd test tells us), just
2704 call the generic function. Any adjustment will be done at final
2706 if (output_bfd != NULL)
2707 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2708 input_section, output_bfd, error_message);
2710 /* Subtract the symbol section base address. */
2711 reloc_entry->addend -= symbol->section->output_section->vma;
2713 /* Adjust the addend for sign extension of the low 16 bits. */
2714 reloc_entry->addend += 0x8000;
2715 return bfd_reloc_continue;
2718 static bfd_reloc_status_type
2719 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2720 void *data, asection *input_section,
2721 bfd *output_bfd, char **error_message)
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2728 if (output_bfd != NULL)
2729 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2730 input_section, output_bfd, error_message);
2732 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2734 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2736 /* Subtract the TOC base address. */
2737 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2738 return bfd_reloc_continue;
2741 static bfd_reloc_status_type
2742 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2743 void *data, asection *input_section,
2744 bfd *output_bfd, char **error_message)
2748 /* If this is a relocatable link (output_bfd test tells us), just
2749 call the generic function. Any adjustment will be done at final
2751 if (output_bfd != NULL)
2752 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2753 input_section, output_bfd, error_message);
2755 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2757 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2759 /* Subtract the TOC base address. */
2760 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2762 /* Adjust the addend for sign extension of the low 16 bits. */
2763 reloc_entry->addend += 0x8000;
2764 return bfd_reloc_continue;
2767 static bfd_reloc_status_type
2768 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2769 void *data, asection *input_section,
2770 bfd *output_bfd, char **error_message)
2773 bfd_size_type octets;
2775 /* If this is a relocatable link (output_bfd test tells us), just
2776 call the generic function. Any adjustment will be done at final
2778 if (output_bfd != NULL)
2779 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2780 input_section, output_bfd, error_message);
2782 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2784 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2786 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2787 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2788 return bfd_reloc_ok;
2791 static bfd_reloc_status_type
2792 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2793 void *data, asection *input_section,
2794 bfd *output_bfd, char **error_message)
2796 /* If this is a relocatable link (output_bfd test tells us), just
2797 call the generic function. Any adjustment will be done at final
2799 if (output_bfd != NULL)
2800 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2801 input_section, output_bfd, error_message);
2803 if (error_message != NULL)
2805 static char buf[60];
2806 sprintf (buf, "generic linker can't handle %s",
2807 reloc_entry->howto->name);
2808 *error_message = buf;
2810 return bfd_reloc_dangerous;
2813 /* Track GOT entries needed for a given symbol. We might need more
2814 than one got entry per symbol. */
2817 struct got_entry *next;
2819 /* The symbol addend that we'll be placing in the GOT. */
2822 /* Unlike other ELF targets, we use separate GOT entries for the same
2823 symbol referenced from different input files. This is to support
2824 automatic multiple TOC/GOT sections, where the TOC base can vary
2825 from one input file to another. After partitioning into TOC groups
2826 we merge entries within the group.
2828 Point to the BFD owning this GOT entry. */
2831 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2832 TLS_TPREL or TLS_DTPREL for tls entries. */
2833 unsigned char tls_type;
2835 /* Non-zero if got.ent points to real entry. */
2836 unsigned char is_indirect;
2838 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2841 bfd_signed_vma refcount;
2843 struct got_entry *ent;
2847 /* The same for PLT. */
2850 struct plt_entry *next;
2856 bfd_signed_vma refcount;
2861 struct ppc64_elf_obj_tdata
2863 struct elf_obj_tdata elf;
2865 /* Shortcuts to dynamic linker sections. */
2869 /* Used during garbage collection. We attach global symbols defined
2870 on removed .opd entries to this section so that the sym is removed. */
2871 asection *deleted_section;
2873 /* TLS local dynamic got entry handling. Support for multiple GOT
2874 sections means we potentially need one of these for each input bfd. */
2875 struct got_entry tlsld_got;
2878 /* A copy of relocs before they are modified for --emit-relocs. */
2879 Elf_Internal_Rela *relocs;
2881 /* Section contents. */
2885 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2886 the reloc to be in the range -32768 to 32767. */
2887 unsigned int has_small_toc_reloc : 1;
2889 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2890 instruction not one we handle. */
2891 unsigned int unexpected_toc_insn : 1;
2894 #define ppc64_elf_tdata(bfd) \
2895 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2897 #define ppc64_tlsld_got(bfd) \
2898 (&ppc64_elf_tdata (bfd)->tlsld_got)
2900 #define is_ppc64_elf(bfd) \
2901 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2902 && elf_object_id (bfd) == PPC64_ELF_DATA)
2904 /* Override the generic function because we store some extras. */
2907 ppc64_elf_mkobject (bfd *abfd)
2909 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2913 /* Fix bad default arch selected for a 64 bit input bfd when the
2914 default is 32 bit. Also select arch based on apuinfo. */
2917 ppc64_elf_object_p (bfd *abfd)
2919 if (!abfd->arch_info->the_default)
2922 if (abfd->arch_info->bits_per_word == 32)
2924 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2926 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2928 /* Relies on arch after 32 bit default being 64 bit default. */
2929 abfd->arch_info = abfd->arch_info->next;
2930 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2933 return _bfd_elf_ppc_set_arch (abfd);
2936 /* Support for core dump NOTE sections. */
2939 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2941 size_t offset, size;
2943 if (note->descsz != 504)
2947 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2950 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2956 /* Make a ".reg/999" section. */
2957 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2958 size, note->descpos + offset);
2962 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2964 if (note->descsz != 136)
2967 elf_tdata (abfd)->core->pid
2968 = bfd_get_32 (abfd, note->descdata + 24);
2969 elf_tdata (abfd)->core->program
2970 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2971 elf_tdata (abfd)->core->command
2972 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2978 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2991 va_start (ap, note_type);
2992 memset (data, 0, sizeof (data));
2993 strncpy (data + 40, va_arg (ap, const char *), 16);
2994 strncpy (data + 56, va_arg (ap, const char *), 80);
2996 return elfcore_write_note (abfd, buf, bufsiz,
2997 "CORE", note_type, data, sizeof (data));
3008 va_start (ap, note_type);
3009 memset (data, 0, 112);
3010 pid = va_arg (ap, long);
3011 bfd_put_32 (abfd, pid, data + 32);
3012 cursig = va_arg (ap, int);
3013 bfd_put_16 (abfd, cursig, data + 12);
3014 greg = va_arg (ap, const void *);
3015 memcpy (data + 112, greg, 384);
3016 memset (data + 496, 0, 8);
3018 return elfcore_write_note (abfd, buf, bufsiz,
3019 "CORE", note_type, data, sizeof (data));
3024 /* Add extra PPC sections. */
3026 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3028 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3029 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3030 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3031 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3032 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3033 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3034 { NULL, 0, 0, 0, 0 }
3037 enum _ppc64_sec_type {
3043 struct _ppc64_elf_section_data
3045 struct bfd_elf_section_data elf;
3049 /* An array with one entry for each opd function descriptor,
3050 and some spares since opd entries may be either 16 or 24 bytes. */
3051 #define OPD_NDX(OFF) ((OFF) >> 4)
3052 struct _opd_sec_data
3054 /* Points to the function code section for local opd entries. */
3055 asection **func_sec;
3057 /* After editing .opd, adjust references to opd local syms. */
3061 /* An array for toc sections, indexed by offset/8. */
3062 struct _toc_sec_data
3064 /* Specifies the relocation symbol index used at a given toc offset. */
3067 /* And the relocation addend. */
3072 enum _ppc64_sec_type sec_type:2;
3074 /* Flag set when small branches are detected. Used to
3075 select suitable defaults for the stub group size. */
3076 unsigned int has_14bit_branch:1;
3079 #define ppc64_elf_section_data(sec) \
3080 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3083 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3085 if (!sec->used_by_bfd)
3087 struct _ppc64_elf_section_data *sdata;
3088 bfd_size_type amt = sizeof (*sdata);
3090 sdata = bfd_zalloc (abfd, amt);
3093 sec->used_by_bfd = sdata;
3096 return _bfd_elf_new_section_hook (abfd, sec);
3099 static struct _opd_sec_data *
3100 get_opd_info (asection * sec)
3103 && ppc64_elf_section_data (sec) != NULL
3104 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3105 return &ppc64_elf_section_data (sec)->u.opd;
3109 /* Parameters for the qsort hook. */
3110 static bfd_boolean synthetic_relocatable;
3111 static asection *synthetic_opd;
3113 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3116 compare_symbols (const void *ap, const void *bp)
3118 const asymbol *a = * (const asymbol **) ap;
3119 const asymbol *b = * (const asymbol **) bp;
3121 /* Section symbols first. */
3122 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3124 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3127 /* then .opd symbols. */
3128 if (synthetic_opd != NULL)
3130 if (strcmp (a->section->name, ".opd") == 0
3131 && strcmp (b->section->name, ".opd") != 0)
3133 if (strcmp (a->section->name, ".opd") != 0
3134 && strcmp (b->section->name, ".opd") == 0)
3138 /* then other code symbols. */
3139 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3140 == (SEC_CODE | SEC_ALLOC)
3141 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3142 != (SEC_CODE | SEC_ALLOC))
3145 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3146 != (SEC_CODE | SEC_ALLOC)
3147 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3148 == (SEC_CODE | SEC_ALLOC))
3151 if (synthetic_relocatable)
3153 if (a->section->id < b->section->id)
3156 if (a->section->id > b->section->id)
3160 if (a->value + a->section->vma < b->value + b->section->vma)
3163 if (a->value + a->section->vma > b->value + b->section->vma)
3166 /* For syms with the same value, prefer strong dynamic global function
3167 syms over other syms. */
3168 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3171 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3174 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3177 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3180 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3183 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3186 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3189 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3195 /* Search SYMS for a symbol of the given VALUE. */
3198 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3202 if (id == (unsigned) -1)
3206 mid = (lo + hi) >> 1;
3207 if (syms[mid]->value + syms[mid]->section->vma < value)
3209 else if (syms[mid]->value + syms[mid]->section->vma > value)
3219 mid = (lo + hi) >> 1;
3220 if (syms[mid]->section->id < id)
3222 else if (syms[mid]->section->id > id)
3224 else if (syms[mid]->value < value)
3226 else if (syms[mid]->value > value)
3236 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3238 bfd_vma vma = *(bfd_vma *) ptr;
3239 return ((section->flags & SEC_ALLOC) != 0
3240 && section->vma <= vma
3241 && vma < section->vma + section->size);
3244 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3245 entry syms. Also generate @plt symbols for the glink branch table.
3246 Returns count of synthetic symbols in RET or -1 on error. */
3249 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3250 long static_count, asymbol **static_syms,
3251 long dyn_count, asymbol **dyn_syms,
3258 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3259 asection *opd = NULL;
3260 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3262 int abi = abiversion (abfd);
3268 opd = bfd_get_section_by_name (abfd, ".opd");
3269 if (opd == NULL && abi == 1)
3273 symcount = static_count;
3275 symcount += dyn_count;
3279 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3283 if (!relocatable && static_count != 0 && dyn_count != 0)
3285 /* Use both symbol tables. */
3286 memcpy (syms, static_syms, static_count * sizeof (*syms));
3287 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3289 else if (!relocatable && static_count == 0)
3290 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3292 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3294 synthetic_relocatable = relocatable;
3295 synthetic_opd = opd;
3296 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3298 if (!relocatable && symcount > 1)
3301 /* Trim duplicate syms, since we may have merged the normal and
3302 dynamic symbols. Actually, we only care about syms that have
3303 different values, so trim any with the same value. */
3304 for (i = 1, j = 1; i < symcount; ++i)
3305 if (syms[i - 1]->value + syms[i - 1]->section->vma
3306 != syms[i]->value + syms[i]->section->vma)
3307 syms[j++] = syms[i];
3312 /* Note that here and in compare_symbols we can't compare opd and
3313 sym->section directly. With separate debug info files, the
3314 symbols will be extracted from the debug file while abfd passed
3315 to this function is the real binary. */
3316 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3320 for (; i < symcount; ++i)
3321 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3322 != (SEC_CODE | SEC_ALLOC))
3323 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3327 for (; i < symcount; ++i)
3328 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3333 for (; i < symcount; ++i)
3334 if (strcmp (syms[i]->section->name, ".opd") != 0)
3338 for (; i < symcount; ++i)
3339 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3340 != (SEC_CODE | SEC_ALLOC))
3348 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3353 if (opdsymend == secsymend)
3356 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3357 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3361 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3368 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3372 while (r < opd->relocation + relcount
3373 && r->address < syms[i]->value + opd->vma)
3376 if (r == opd->relocation + relcount)
3379 if (r->address != syms[i]->value + opd->vma)
3382 if (r->howto->type != R_PPC64_ADDR64)
3385 sym = *r->sym_ptr_ptr;
3386 if (!sym_exists_at (syms, opdsymend, symcount,
3387 sym->section->id, sym->value + r->addend))
3390 size += sizeof (asymbol);
3391 size += strlen (syms[i]->name) + 2;
3397 s = *ret = bfd_malloc (size);
3404 names = (char *) (s + count);
3406 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3410 while (r < opd->relocation + relcount
3411 && r->address < syms[i]->value + opd->vma)
3414 if (r == opd->relocation + relcount)
3417 if (r->address != syms[i]->value + opd->vma)
3420 if (r->howto->type != R_PPC64_ADDR64)
3423 sym = *r->sym_ptr_ptr;
3424 if (!sym_exists_at (syms, opdsymend, symcount,
3425 sym->section->id, sym->value + r->addend))
3430 s->flags |= BSF_SYNTHETIC;
3431 s->section = sym->section;
3432 s->value = sym->value + r->addend;
3435 len = strlen (syms[i]->name);
3436 memcpy (names, syms[i]->name, len + 1);
3438 /* Have udata.p point back to the original symbol this
3439 synthetic symbol was derived from. */
3440 s->udata.p = syms[i];
3447 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3448 bfd_byte *contents = NULL;
3451 bfd_vma glink_vma = 0, resolv_vma = 0;
3452 asection *dynamic, *glink = NULL, *relplt = NULL;
3455 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3457 free_contents_and_exit_err:
3459 free_contents_and_exit:
3466 for (i = secsymend; i < opdsymend; ++i)
3470 /* Ignore bogus symbols. */
3471 if (syms[i]->value > opd->size - 8)
3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3478 size += sizeof (asymbol);
3479 size += strlen (syms[i]->name) + 2;
3483 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3485 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3487 bfd_byte *dynbuf, *extdyn, *extdynend;
3489 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3491 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3492 goto free_contents_and_exit_err;
3494 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3495 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3498 extdynend = extdyn + dynamic->size;
3499 for (; extdyn < extdynend; extdyn += extdynsize)
3501 Elf_Internal_Dyn dyn;
3502 (*swap_dyn_in) (abfd, extdyn, &dyn);
3504 if (dyn.d_tag == DT_NULL)
3507 if (dyn.d_tag == DT_PPC64_GLINK)
3509 /* The first glink stub starts at offset 32; see
3510 comment in ppc64_elf_finish_dynamic_sections. */
3511 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3512 /* The .glink section usually does not survive the final
3513 link; search for the section (usually .text) where the
3514 glink stubs now reside. */
3515 glink = bfd_sections_find_if (abfd, section_covers_vma,
3526 /* Determine __glink trampoline by reading the relative branch
3527 from the first glink stub. */
3529 unsigned int off = 0;
3531 while (bfd_get_section_contents (abfd, glink, buf,
3532 glink_vma + off - glink->vma, 4))
3534 unsigned int insn = bfd_get_32 (abfd, buf);
3536 if ((insn & ~0x3fffffc) == 0)
3538 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3547 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3549 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3552 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3553 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3554 goto free_contents_and_exit_err;
3556 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3557 size += plt_count * sizeof (asymbol);
3559 p = relplt->relocation;
3560 for (i = 0; i < plt_count; i++, p++)
3562 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3564 size += sizeof ("+0x") - 1 + 16;
3570 goto free_contents_and_exit;
3571 s = *ret = bfd_malloc (size);
3573 goto free_contents_and_exit_err;
3575 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3577 for (i = secsymend; i < opdsymend; ++i)
3581 if (syms[i]->value > opd->size - 8)
3584 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3585 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3589 asection *sec = abfd->sections;
3596 long mid = (lo + hi) >> 1;
3597 if (syms[mid]->section->vma < ent)
3599 else if (syms[mid]->section->vma > ent)
3603 sec = syms[mid]->section;
3608 if (lo >= hi && lo > codesecsym)
3609 sec = syms[lo - 1]->section;
3611 for (; sec != NULL; sec = sec->next)
3615 /* SEC_LOAD may not be set if SEC is from a separate debug
3617 if ((sec->flags & SEC_ALLOC) == 0)
3619 if ((sec->flags & SEC_CODE) != 0)
3622 s->flags |= BSF_SYNTHETIC;
3623 s->value = ent - s->section->vma;
3626 len = strlen (syms[i]->name);
3627 memcpy (names, syms[i]->name, len + 1);
3629 /* Have udata.p point back to the original symbol this
3630 synthetic symbol was derived from. */
3631 s->udata.p = syms[i];
3637 if (glink != NULL && relplt != NULL)
3641 /* Add a symbol for the main glink trampoline. */
3642 memset (s, 0, sizeof *s);
3644 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3646 s->value = resolv_vma - glink->vma;
3648 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3649 names += sizeof ("__glink_PLTresolve");
3654 /* FIXME: It would be very much nicer to put sym@plt on the
3655 stub rather than on the glink branch table entry. The
3656 objdump disassembler would then use a sensible symbol
3657 name on plt calls. The difficulty in doing so is
3658 a) finding the stubs, and,
3659 b) matching stubs against plt entries, and,
3660 c) there can be multiple stubs for a given plt entry.
3662 Solving (a) could be done by code scanning, but older
3663 ppc64 binaries used different stubs to current code.
3664 (b) is the tricky one since you need to known the toc
3665 pointer for at least one function that uses a pic stub to
3666 be able to calculate the plt address referenced.
3667 (c) means gdb would need to set multiple breakpoints (or
3668 find the glink branch itself) when setting breakpoints
3669 for pending shared library loads. */
3670 p = relplt->relocation;
3671 for (i = 0; i < plt_count; i++, p++)
3675 *s = **p->sym_ptr_ptr;
3676 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3677 we are defining a symbol, ensure one of them is set. */
3678 if ((s->flags & BSF_LOCAL) == 0)
3679 s->flags |= BSF_GLOBAL;
3680 s->flags |= BSF_SYNTHETIC;
3682 s->value = glink_vma - glink->vma;
3685 len = strlen ((*p->sym_ptr_ptr)->name);
3686 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3690 memcpy (names, "+0x", sizeof ("+0x") - 1);
3691 names += sizeof ("+0x") - 1;
3692 bfd_sprintf_vma (abfd, names, p->addend);
3693 names += strlen (names);
3695 memcpy (names, "@plt", sizeof ("@plt"));
3696 names += sizeof ("@plt");
3716 /* The following functions are specific to the ELF linker, while
3717 functions above are used generally. Those named ppc64_elf_* are
3718 called by the main ELF linker code. They appear in this file more
3719 or less in the order in which they are called. eg.
3720 ppc64_elf_check_relocs is called early in the link process,
3721 ppc64_elf_finish_dynamic_sections is one of the last functions
3724 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3725 functions have both a function code symbol and a function descriptor
3726 symbol. A call to foo in a relocatable object file looks like:
3733 The function definition in another object file might be:
3737 . .quad .TOC.@tocbase
3743 When the linker resolves the call during a static link, the branch
3744 unsurprisingly just goes to .foo and the .opd information is unused.
3745 If the function definition is in a shared library, things are a little
3746 different: The call goes via a plt call stub, the opd information gets
3747 copied to the plt, and the linker patches the nop.
3755 . std 2,40(1) # in practice, the call stub
3756 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3757 . addi 11,11,Lfoo@toc@l # this is the general idea
3765 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3767 The "reloc ()" notation is supposed to indicate that the linker emits
3768 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3771 What are the difficulties here? Well, firstly, the relocations
3772 examined by the linker in check_relocs are against the function code
3773 sym .foo, while the dynamic relocation in the plt is emitted against
3774 the function descriptor symbol, foo. Somewhere along the line, we need
3775 to carefully copy dynamic link information from one symbol to the other.
3776 Secondly, the generic part of the elf linker will make .foo a dynamic
3777 symbol as is normal for most other backends. We need foo dynamic
3778 instead, at least for an application final link. However, when
3779 creating a shared library containing foo, we need to have both symbols
3780 dynamic so that references to .foo are satisfied during the early
3781 stages of linking. Otherwise the linker might decide to pull in a
3782 definition from some other object, eg. a static library.
3784 Update: As of August 2004, we support a new convention. Function
3785 calls may use the function descriptor symbol, ie. "bl foo". This
3786 behaves exactly as "bl .foo". */
3788 /* Of those relocs that might be copied as dynamic relocs, this function
3789 selects those that must be copied when linking a shared library,
3790 even when the symbol is local. */
3793 must_be_dyn_reloc (struct bfd_link_info *info,
3794 enum elf_ppc64_reloc_type r_type)
3806 case R_PPC64_TPREL16:
3807 case R_PPC64_TPREL16_LO:
3808 case R_PPC64_TPREL16_HI:
3809 case R_PPC64_TPREL16_HA:
3810 case R_PPC64_TPREL16_DS:
3811 case R_PPC64_TPREL16_LO_DS:
3812 case R_PPC64_TPREL16_HIGH:
3813 case R_PPC64_TPREL16_HIGHA:
3814 case R_PPC64_TPREL16_HIGHER:
3815 case R_PPC64_TPREL16_HIGHERA:
3816 case R_PPC64_TPREL16_HIGHEST:
3817 case R_PPC64_TPREL16_HIGHESTA:
3818 case R_PPC64_TPREL64:
3819 return !bfd_link_executable (info);
3823 /* Whether an undefined weak symbol should resolve to its link-time
3824 value, even in PIC or PIE objects. */
3825 #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \
3826 ((H)->root.type == bfd_link_hash_undefweak \
3827 && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \
3828 || (INFO)->dynamic_undefined_weak == 0))
3830 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3831 copying dynamic variables from a shared lib into an app's dynbss
3832 section, and instead use a dynamic relocation to point into the
3833 shared lib. With code that gcc generates, it's vital that this be
3834 enabled; In the PowerPC64 ABI, the address of a function is actually
3835 the address of a function descriptor, which resides in the .opd
3836 section. gcc uses the descriptor directly rather than going via the
3837 GOT as some other ABI's do, which means that initialized function
3838 pointers must reference the descriptor. Thus, a function pointer
3839 initialized to the address of a function in a shared library will
3840 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3841 redefines the function descriptor symbol to point to the copy. This
3842 presents a problem as a plt entry for that function is also
3843 initialized from the function descriptor symbol and the copy reloc
3844 may not be initialized first. */
3845 #define ELIMINATE_COPY_RELOCS 1
3847 /* Section name for stubs is the associated section name plus this
3849 #define STUB_SUFFIX ".stub"
3852 ppc_stub_long_branch:
3853 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3854 destination, but a 24 bit branch in a stub section will reach.
3857 ppc_stub_plt_branch:
3858 Similar to the above, but a 24 bit branch in the stub section won't
3859 reach its destination.
3860 . addis %r11,%r2,xxx@toc@ha
3861 . ld %r12,xxx@toc@l(%r11)
3866 Used to call a function in a shared library. If it so happens that
3867 the plt entry referenced crosses a 64k boundary, then an extra
3868 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3870 . addis %r11,%r2,xxx@toc@ha
3871 . ld %r12,xxx+0@toc@l(%r11)
3873 . ld %r2,xxx+8@toc@l(%r11)
3874 . ld %r11,xxx+16@toc@l(%r11)
3877 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3878 code to adjust the value and save r2 to support multiple toc sections.
3879 A ppc_stub_long_branch with an r2 offset looks like:
3881 . addis %r2,%r2,off@ha
3882 . addi %r2,%r2,off@l
3885 A ppc_stub_plt_branch with an r2 offset looks like:
3887 . addis %r11,%r2,xxx@toc@ha
3888 . ld %r12,xxx@toc@l(%r11)
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3894 In cases where the "addis" instruction would add zero, the "addis" is
3895 omitted and following instructions modified slightly in some cases.
3898 enum ppc_stub_type {
3900 ppc_stub_long_branch,
3901 ppc_stub_long_branch_r2off,
3902 ppc_stub_plt_branch,
3903 ppc_stub_plt_branch_r2off,
3905 ppc_stub_plt_call_r2save,
3906 ppc_stub_global_entry,
3910 /* Information on stub grouping. */
3913 /* The stub section. */
3915 /* This is the section to which stubs in the group will be attached. */
3918 struct map_stub *next;
3919 /* Whether to emit a copy of register save/restore functions in this
3922 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3923 or -1u if no such stub with bctrl exists. */
3924 unsigned int tls_get_addr_opt_bctrl;
3927 struct ppc_stub_hash_entry {
3929 /* Base hash table entry structure. */
3930 struct bfd_hash_entry root;
3932 enum ppc_stub_type stub_type;
3934 /* Group information. */
3935 struct map_stub *group;
3937 /* Offset within stub_sec of the beginning of this stub. */
3938 bfd_vma stub_offset;
3940 /* Given the symbol's value and its section we can determine its final
3941 value when building the stubs (so the stub knows where to jump. */
3942 bfd_vma target_value;
3943 asection *target_section;
3945 /* The symbol table entry, if any, that this was derived from. */
3946 struct ppc_link_hash_entry *h;
3947 struct plt_entry *plt_ent;
3949 /* Symbol st_other. */
3950 unsigned char other;
3953 struct ppc_branch_hash_entry {
3955 /* Base hash table entry structure. */
3956 struct bfd_hash_entry root;
3958 /* Offset within branch lookup table. */
3959 unsigned int offset;
3961 /* Generation marker. */
3965 /* Used to track dynamic relocations for local symbols. */
3966 struct ppc_dyn_relocs
3968 struct ppc_dyn_relocs *next;
3970 /* The input section of the reloc. */
3973 /* Total number of relocs copied for the input section. */
3974 unsigned int count : 31;
3976 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3977 unsigned int ifunc : 1;
3980 struct ppc_link_hash_entry
3982 struct elf_link_hash_entry elf;
3985 /* A pointer to the most recently used stub hash entry against this
3987 struct ppc_stub_hash_entry *stub_cache;
3989 /* A pointer to the next symbol starting with a '.' */
3990 struct ppc_link_hash_entry *next_dot_sym;
3993 /* Track dynamic relocs copied for this symbol. */
3994 struct elf_dyn_relocs *dyn_relocs;
3996 /* Chain of aliases referring to a weakdef. */
3997 struct ppc_link_hash_entry *weakref;
3999 /* Link between function code and descriptor symbols. */
4000 struct ppc_link_hash_entry *oh;
4002 /* Flag function code and descriptor symbols. */
4003 unsigned int is_func:1;
4004 unsigned int is_func_descriptor:1;
4005 unsigned int fake:1;
4007 /* Whether global opd/toc sym has been adjusted or not.
4008 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4009 should be set for all globals defined in any opd/toc section. */
4010 unsigned int adjust_done:1;
4012 /* Set if this is an out-of-line register save/restore function,
4013 with non-standard calling convention. */
4014 unsigned int save_res:1;
4016 /* Set if a duplicate symbol with non-zero localentry is detected,
4017 even when the duplicate symbol does not provide a definition. */
4018 unsigned int non_zero_localentry:1;
4020 /* Contexts in which symbol is used in the GOT (or TOC).
4021 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4022 corresponding relocs are encountered during check_relocs.
4023 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4024 indicate the corresponding GOT entry type is not needed.
4025 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4026 a TPREL one. We use a separate flag rather than setting TPREL
4027 just for convenience in distinguishing the two cases. */
4028 #define TLS_GD 1 /* GD reloc. */
4029 #define TLS_LD 2 /* LD reloc. */
4030 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4031 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4032 #define TLS_TLS 16 /* Any TLS reloc. */
4033 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4034 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4035 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4036 unsigned char tls_mask;
4039 /* ppc64 ELF linker hash table. */
4041 struct ppc_link_hash_table
4043 struct elf_link_hash_table elf;
4045 /* The stub hash table. */
4046 struct bfd_hash_table stub_hash_table;
4048 /* Another hash table for plt_branch stubs. */
4049 struct bfd_hash_table branch_hash_table;
4051 /* Hash table for function prologue tocsave. */
4052 htab_t tocsave_htab;
4054 /* Various options and other info passed from the linker. */
4055 struct ppc64_elf_params *params;
4057 /* The size of sec_info below. */
4058 unsigned int sec_info_arr_size;
4060 /* Per-section array of extra section info. Done this way rather
4061 than as part of ppc64_elf_section_data so we have the info for
4062 non-ppc64 sections. */
4065 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4070 /* The section group that this section belongs to. */
4071 struct map_stub *group;
4072 /* A temp section list pointer. */
4077 /* Linked list of groups. */
4078 struct map_stub *group;
4080 /* Temp used when calculating TOC pointers. */
4083 asection *toc_first_sec;
4085 /* Used when adding symbols. */
4086 struct ppc_link_hash_entry *dot_syms;
4088 /* Shortcuts to get to dynamic linker sections. */
4093 asection *glink_eh_frame;
4095 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4096 struct ppc_link_hash_entry *tls_get_addr;
4097 struct ppc_link_hash_entry *tls_get_addr_fd;
4099 /* The size of reliplt used by got entry relocs. */
4100 bfd_size_type got_reli_size;
4103 unsigned long stub_count[ppc_stub_global_entry];
4105 /* Number of stubs against global syms. */
4106 unsigned long stub_globals;
4108 /* Set if we're linking code with function descriptors. */
4109 unsigned int opd_abi:1;
4111 /* Support for multiple toc sections. */
4112 unsigned int do_multi_toc:1;
4113 unsigned int multi_toc_needed:1;
4114 unsigned int second_toc_pass:1;
4115 unsigned int do_toc_opt:1;
4118 unsigned int stub_error:1;
4120 /* Whether func_desc_adjust needs to be run over symbols. */
4121 unsigned int need_func_desc_adj:1;
4123 /* Whether there exist local gnu indirect function resolvers,
4124 referenced by dynamic relocations. */
4125 unsigned int local_ifunc_resolver:1;
4126 unsigned int maybe_local_ifunc_resolver:1;
4128 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4129 unsigned int has_plt_localentry0:1;
4131 /* Incremented every time we size stubs. */
4132 unsigned int stub_iteration;
4134 /* Small local sym cache. */
4135 struct sym_cache sym_cache;
4138 /* Rename some of the generic section flags to better document how they
4141 /* Nonzero if this section has TLS related relocations. */
4142 #define has_tls_reloc sec_flg0
4144 /* Nonzero if this section has a call to __tls_get_addr. */
4145 #define has_tls_get_addr_call sec_flg1
4147 /* Nonzero if this section has any toc or got relocs. */
4148 #define has_toc_reloc sec_flg2
4150 /* Nonzero if this section has a call to another section that uses
4152 #define makes_toc_func_call sec_flg3
4154 /* Recursion protection when determining above flag. */
4155 #define call_check_in_progress sec_flg4
4156 #define call_check_done sec_flg5
4158 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4160 #define ppc_hash_table(p) \
4161 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4162 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4164 #define ppc_stub_hash_lookup(table, string, create, copy) \
4165 ((struct ppc_stub_hash_entry *) \
4166 bfd_hash_lookup ((table), (string), (create), (copy)))
4168 #define ppc_branch_hash_lookup(table, string, create, copy) \
4169 ((struct ppc_branch_hash_entry *) \
4170 bfd_hash_lookup ((table), (string), (create), (copy)))
4172 /* Create an entry in the stub hash table. */
4174 static struct bfd_hash_entry *
4175 stub_hash_newfunc (struct bfd_hash_entry *entry,
4176 struct bfd_hash_table *table,
4179 /* Allocate the structure if it has not already been allocated by a
4183 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4188 /* Call the allocation method of the superclass. */
4189 entry = bfd_hash_newfunc (entry, table, string);
4192 struct ppc_stub_hash_entry *eh;
4194 /* Initialize the local fields. */
4195 eh = (struct ppc_stub_hash_entry *) entry;
4196 eh->stub_type = ppc_stub_none;
4198 eh->stub_offset = 0;
4199 eh->target_value = 0;
4200 eh->target_section = NULL;
4209 /* Create an entry in the branch hash table. */
4211 static struct bfd_hash_entry *
4212 branch_hash_newfunc (struct bfd_hash_entry *entry,
4213 struct bfd_hash_table *table,
4216 /* Allocate the structure if it has not already been allocated by a
4220 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4225 /* Call the allocation method of the superclass. */
4226 entry = bfd_hash_newfunc (entry, table, string);
4229 struct ppc_branch_hash_entry *eh;
4231 /* Initialize the local fields. */
4232 eh = (struct ppc_branch_hash_entry *) entry;
4240 /* Create an entry in a ppc64 ELF linker hash table. */
4242 static struct bfd_hash_entry *
4243 link_hash_newfunc (struct bfd_hash_entry *entry,
4244 struct bfd_hash_table *table,
4247 /* Allocate the structure if it has not already been allocated by a
4251 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4256 /* Call the allocation method of the superclass. */
4257 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4260 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4262 memset (&eh->u.stub_cache, 0,
4263 (sizeof (struct ppc_link_hash_entry)
4264 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4266 /* When making function calls, old ABI code references function entry
4267 points (dot symbols), while new ABI code references the function
4268 descriptor symbol. We need to make any combination of reference and
4269 definition work together, without breaking archive linking.
4271 For a defined function "foo" and an undefined call to "bar":
4272 An old object defines "foo" and ".foo", references ".bar" (possibly
4274 A new object defines "foo" and references "bar".
4276 A new object thus has no problem with its undefined symbols being
4277 satisfied by definitions in an old object. On the other hand, the
4278 old object won't have ".bar" satisfied by a new object.
4280 Keep a list of newly added dot-symbols. */
4282 if (string[0] == '.')
4284 struct ppc_link_hash_table *htab;
4286 htab = (struct ppc_link_hash_table *) table;
4287 eh->u.next_dot_sym = htab->dot_syms;
4288 htab->dot_syms = eh;
4295 struct tocsave_entry {
4301 tocsave_htab_hash (const void *p)
4303 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4304 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4308 tocsave_htab_eq (const void *p1, const void *p2)
4310 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4311 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4312 return e1->sec == e2->sec && e1->offset == e2->offset;
4315 /* Destroy a ppc64 ELF linker hash table. */
4318 ppc64_elf_link_hash_table_free (bfd *obfd)
4320 struct ppc_link_hash_table *htab;
4322 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4323 if (htab->tocsave_htab)
4324 htab_delete (htab->tocsave_htab);
4325 bfd_hash_table_free (&htab->branch_hash_table);
4326 bfd_hash_table_free (&htab->stub_hash_table);
4327 _bfd_elf_link_hash_table_free (obfd);
4330 /* Create a ppc64 ELF linker hash table. */
4332 static struct bfd_link_hash_table *
4333 ppc64_elf_link_hash_table_create (bfd *abfd)
4335 struct ppc_link_hash_table *htab;
4336 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4338 htab = bfd_zmalloc (amt);
4342 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4343 sizeof (struct ppc_link_hash_entry),
4350 /* Init the stub hash table too. */
4351 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4352 sizeof (struct ppc_stub_hash_entry)))
4354 _bfd_elf_link_hash_table_free (abfd);
4358 /* And the branch hash table. */
4359 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4360 sizeof (struct ppc_branch_hash_entry)))
4362 bfd_hash_table_free (&htab->stub_hash_table);
4363 _bfd_elf_link_hash_table_free (abfd);
4367 htab->tocsave_htab = htab_try_create (1024,
4371 if (htab->tocsave_htab == NULL)
4373 ppc64_elf_link_hash_table_free (abfd);
4376 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4378 /* Initializing two fields of the union is just cosmetic. We really
4379 only care about glist, but when compiled on a 32-bit host the
4380 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4381 debugger inspection of these fields look nicer. */
4382 htab->elf.init_got_refcount.refcount = 0;
4383 htab->elf.init_got_refcount.glist = NULL;
4384 htab->elf.init_plt_refcount.refcount = 0;
4385 htab->elf.init_plt_refcount.glist = NULL;
4386 htab->elf.init_got_offset.offset = 0;
4387 htab->elf.init_got_offset.glist = NULL;
4388 htab->elf.init_plt_offset.offset = 0;
4389 htab->elf.init_plt_offset.glist = NULL;
4391 return &htab->elf.root;
4394 /* Create sections for linker generated code. */
4397 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4399 struct ppc_link_hash_table *htab;
4402 htab = ppc_hash_table (info);
4404 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4405 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4406 if (htab->params->save_restore_funcs)
4408 /* Create .sfpr for code to save and restore fp regs. */
4409 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4411 if (htab->sfpr == NULL
4412 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4416 if (bfd_link_relocatable (info))
4419 /* Create .glink for lazy dynamic linking support. */
4420 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4422 if (htab->glink == NULL
4423 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4426 if (!info->no_ld_generated_unwind_info)
4428 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4429 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4430 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4433 if (htab->glink_eh_frame == NULL
4434 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4438 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4439 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4440 if (htab->elf.iplt == NULL
4441 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4444 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4445 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4447 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4448 if (htab->elf.irelplt == NULL
4449 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4452 /* Create branch lookup table for plt_branch stubs. */
4453 flags = (SEC_ALLOC | SEC_LOAD
4454 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4455 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4457 if (htab->brlt == NULL
4458 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4461 if (!bfd_link_pic (info))
4464 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4465 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4466 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4469 if (htab->relbrlt == NULL
4470 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4476 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4479 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4480 struct ppc64_elf_params *params)
4482 struct ppc_link_hash_table *htab;
4484 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4486 /* Always hook our dynamic sections into the first bfd, which is the
4487 linker created stub bfd. This ensures that the GOT header is at
4488 the start of the output TOC section. */
4489 htab = ppc_hash_table (info);
4490 htab->elf.dynobj = params->stub_bfd;
4491 htab->params = params;
4493 return create_linkage_sections (htab->elf.dynobj, info);
4496 /* Build a name for an entry in the stub hash table. */
4499 ppc_stub_name (const asection *input_section,
4500 const asection *sym_sec,
4501 const struct ppc_link_hash_entry *h,
4502 const Elf_Internal_Rela *rel)
4507 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4508 offsets from a sym as a branch target? In fact, we could
4509 probably assume the addend is always zero. */
4510 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4514 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4515 stub_name = bfd_malloc (len);
4516 if (stub_name == NULL)
4519 len = sprintf (stub_name, "%08x.%s+%x",
4520 input_section->id & 0xffffffff,
4521 h->elf.root.root.string,
4522 (int) rel->r_addend & 0xffffffff);
4526 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4527 stub_name = bfd_malloc (len);
4528 if (stub_name == NULL)
4531 len = sprintf (stub_name, "%08x.%x:%x+%x",
4532 input_section->id & 0xffffffff,
4533 sym_sec->id & 0xffffffff,
4534 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4535 (int) rel->r_addend & 0xffffffff);
4537 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4538 stub_name[len - 2] = 0;
4542 /* Look up an entry in the stub hash. Stub entries are cached because
4543 creating the stub name takes a bit of time. */
4545 static struct ppc_stub_hash_entry *
4546 ppc_get_stub_entry (const asection *input_section,
4547 const asection *sym_sec,
4548 struct ppc_link_hash_entry *h,
4549 const Elf_Internal_Rela *rel,
4550 struct ppc_link_hash_table *htab)
4552 struct ppc_stub_hash_entry *stub_entry;
4553 struct map_stub *group;
4555 /* If this input section is part of a group of sections sharing one
4556 stub section, then use the id of the first section in the group.
4557 Stub names need to include a section id, as there may well be
4558 more than one stub used to reach say, printf, and we need to
4559 distinguish between them. */
4560 group = htab->sec_info[input_section->id].u.group;
4564 if (h != NULL && h->u.stub_cache != NULL
4565 && h->u.stub_cache->h == h
4566 && h->u.stub_cache->group == group)
4568 stub_entry = h->u.stub_cache;
4574 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4575 if (stub_name == NULL)
4578 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4579 stub_name, FALSE, FALSE);
4581 h->u.stub_cache = stub_entry;
4589 /* Add a new stub entry to the stub hash. Not all fields of the new
4590 stub entry are initialised. */
4592 static struct ppc_stub_hash_entry *
4593 ppc_add_stub (const char *stub_name,
4595 struct bfd_link_info *info)
4597 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4598 struct map_stub *group;
4601 struct ppc_stub_hash_entry *stub_entry;
4603 group = htab->sec_info[section->id].u.group;
4604 link_sec = group->link_sec;
4605 stub_sec = group->stub_sec;
4606 if (stub_sec == NULL)
4612 namelen = strlen (link_sec->name);
4613 len = namelen + sizeof (STUB_SUFFIX);
4614 s_name = bfd_alloc (htab->params->stub_bfd, len);
4618 memcpy (s_name, link_sec->name, namelen);
4619 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4620 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4621 if (stub_sec == NULL)
4623 group->stub_sec = stub_sec;
4626 /* Enter this entry into the linker stub hash table. */
4627 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4629 if (stub_entry == NULL)
4631 /* xgettext:c-format */
4632 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4633 section->owner, stub_name);
4637 stub_entry->group = group;
4638 stub_entry->stub_offset = 0;
4642 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4643 not already done. */
4646 create_got_section (bfd *abfd, struct bfd_link_info *info)
4648 asection *got, *relgot;
4650 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4652 if (!is_ppc64_elf (abfd))
4658 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4661 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4662 | SEC_LINKER_CREATED);
4664 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4666 || !bfd_set_section_alignment (abfd, got, 3))
4669 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4670 flags | SEC_READONLY);
4672 || ! bfd_set_section_alignment (abfd, relgot, 3))
4675 ppc64_elf_tdata (abfd)->got = got;
4676 ppc64_elf_tdata (abfd)->relgot = relgot;
4680 /* Follow indirect and warning symbol links. */
4682 static inline struct bfd_link_hash_entry *
4683 follow_link (struct bfd_link_hash_entry *h)
4685 while (h->type == bfd_link_hash_indirect
4686 || h->type == bfd_link_hash_warning)
4691 static inline struct elf_link_hash_entry *
4692 elf_follow_link (struct elf_link_hash_entry *h)
4694 return (struct elf_link_hash_entry *) follow_link (&h->root);
4697 static inline struct ppc_link_hash_entry *
4698 ppc_follow_link (struct ppc_link_hash_entry *h)
4700 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4703 /* Merge PLT info on FROM with that on TO. */
4706 move_plt_plist (struct ppc_link_hash_entry *from,
4707 struct ppc_link_hash_entry *to)
4709 if (from->elf.plt.plist != NULL)
4711 if (to->elf.plt.plist != NULL)
4713 struct plt_entry **entp;
4714 struct plt_entry *ent;
4716 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4718 struct plt_entry *dent;
4720 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4721 if (dent->addend == ent->addend)
4723 dent->plt.refcount += ent->plt.refcount;
4730 *entp = to->elf.plt.plist;
4733 to->elf.plt.plist = from->elf.plt.plist;
4734 from->elf.plt.plist = NULL;
4738 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4741 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4742 struct elf_link_hash_entry *dir,
4743 struct elf_link_hash_entry *ind)
4745 struct ppc_link_hash_entry *edir, *eind;
4747 edir = (struct ppc_link_hash_entry *) dir;
4748 eind = (struct ppc_link_hash_entry *) ind;
4750 edir->is_func |= eind->is_func;
4751 edir->is_func_descriptor |= eind->is_func_descriptor;
4752 edir->tls_mask |= eind->tls_mask;
4753 if (eind->oh != NULL)
4754 edir->oh = ppc_follow_link (eind->oh);
4756 /* If called to transfer flags for a weakdef during processing
4757 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4758 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4759 if (!(ELIMINATE_COPY_RELOCS
4760 && eind->elf.root.type != bfd_link_hash_indirect
4761 && edir->elf.dynamic_adjusted))
4762 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4764 if (edir->elf.versioned != versioned_hidden)
4765 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4766 edir->elf.ref_regular |= eind->elf.ref_regular;
4767 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4768 edir->elf.needs_plt |= eind->elf.needs_plt;
4769 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4771 /* If we were called to copy over info for a weak sym, don't copy
4772 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4773 in order to simplify readonly_dynrelocs and save a field in the
4774 symbol hash entry, but that means dyn_relocs can't be used in any
4775 tests about a specific symbol, or affect other symbol flags which
4777 Chain weakdefs so we can get from the weakdef back to an alias.
4778 The list is circular so that we don't need to use u.weakdef as
4779 well as this list to look at all aliases. */
4780 if (eind->elf.root.type != bfd_link_hash_indirect)
4782 struct ppc_link_hash_entry *cur, *add, *next;
4787 cur = edir->weakref;
4792 /* We can be called twice for the same symbols.
4793 Don't make multiple loops. */
4797 } while (cur != edir);
4799 next = add->weakref;
4802 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4803 edir->weakref = add;
4806 } while (add != NULL && add != eind);
4810 /* Copy over any dynamic relocs we may have on the indirect sym. */
4811 if (eind->dyn_relocs != NULL)
4813 if (edir->dyn_relocs != NULL)
4815 struct elf_dyn_relocs **pp;
4816 struct elf_dyn_relocs *p;
4818 /* Add reloc counts against the indirect sym to the direct sym
4819 list. Merge any entries against the same section. */
4820 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4822 struct elf_dyn_relocs *q;
4824 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4825 if (q->sec == p->sec)
4827 q->pc_count += p->pc_count;
4828 q->count += p->count;
4835 *pp = edir->dyn_relocs;
4838 edir->dyn_relocs = eind->dyn_relocs;
4839 eind->dyn_relocs = NULL;
4842 /* Copy over got entries that we may have already seen to the
4843 symbol which just became indirect. */
4844 if (eind->elf.got.glist != NULL)
4846 if (edir->elf.got.glist != NULL)
4848 struct got_entry **entp;
4849 struct got_entry *ent;
4851 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4853 struct got_entry *dent;
4855 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4856 if (dent->addend == ent->addend
4857 && dent->owner == ent->owner
4858 && dent->tls_type == ent->tls_type)
4860 dent->got.refcount += ent->got.refcount;
4867 *entp = edir->elf.got.glist;
4870 edir->elf.got.glist = eind->elf.got.glist;
4871 eind->elf.got.glist = NULL;
4874 /* And plt entries. */
4875 move_plt_plist (eind, edir);
4877 if (eind->elf.dynindx != -1)
4879 if (edir->elf.dynindx != -1)
4880 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4881 edir->elf.dynstr_index);
4882 edir->elf.dynindx = eind->elf.dynindx;
4883 edir->elf.dynstr_index = eind->elf.dynstr_index;
4884 eind->elf.dynindx = -1;
4885 eind->elf.dynstr_index = 0;
4889 /* Find the function descriptor hash entry from the given function code
4890 hash entry FH. Link the entries via their OH fields. */
4892 static struct ppc_link_hash_entry *
4893 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4895 struct ppc_link_hash_entry *fdh = fh->oh;
4899 const char *fd_name = fh->elf.root.root.string + 1;
4901 fdh = (struct ppc_link_hash_entry *)
4902 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4906 fdh->is_func_descriptor = 1;
4912 fdh = ppc_follow_link (fdh);
4913 fdh->is_func_descriptor = 1;
4918 /* Make a fake function descriptor sym for the undefined code sym FH. */
4920 static struct ppc_link_hash_entry *
4921 make_fdh (struct bfd_link_info *info,
4922 struct ppc_link_hash_entry *fh)
4924 bfd *abfd = fh->elf.root.u.undef.abfd;
4925 struct bfd_link_hash_entry *bh = NULL;
4926 struct ppc_link_hash_entry *fdh;
4927 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4931 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4932 fh->elf.root.root.string + 1,
4933 flags, bfd_und_section_ptr, 0,
4934 NULL, FALSE, FALSE, &bh))
4937 fdh = (struct ppc_link_hash_entry *) bh;
4938 fdh->elf.non_elf = 0;
4940 fdh->is_func_descriptor = 1;
4947 /* Fix function descriptor symbols defined in .opd sections to be
4951 ppc64_elf_add_symbol_hook (bfd *ibfd,
4952 struct bfd_link_info *info,
4953 Elf_Internal_Sym *isym,
4955 flagword *flags ATTRIBUTE_UNUSED,
4959 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4960 && (ibfd->flags & DYNAMIC) == 0
4961 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4962 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4965 && strcmp ((*sec)->name, ".opd") == 0)
4969 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4970 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4971 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4973 /* If the symbol is a function defined in .opd, and the function
4974 code is in a discarded group, let it appear to be undefined. */
4975 if (!bfd_link_relocatable (info)
4976 && (*sec)->reloc_count != 0
4977 && opd_entry_value (*sec, *value, &code_sec, NULL,
4978 FALSE) != (bfd_vma) -1
4979 && discarded_section (code_sec))
4981 *sec = bfd_und_section_ptr;
4982 isym->st_shndx = SHN_UNDEF;
4985 else if (*sec != NULL
4986 && strcmp ((*sec)->name, ".toc") == 0
4987 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4989 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4991 htab->params->object_in_toc = 1;
4994 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4996 if (abiversion (ibfd) == 0)
4997 set_abiversion (ibfd, 2);
4998 else if (abiversion (ibfd) == 1)
5000 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
5001 " for ABI version 1\n"), name);
5002 bfd_set_error (bfd_error_bad_value);
5010 /* Merge non-visibility st_other attributes: local entry point. */
5013 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5014 const Elf_Internal_Sym *isym,
5015 bfd_boolean definition,
5016 bfd_boolean dynamic)
5018 if (definition && (!dynamic || !h->def_regular))
5019 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5020 | ELF_ST_VISIBILITY (h->other));
5023 /* Hook called on merging a symbol. We use this to clear "fake" since
5024 we now have a real symbol. */
5027 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5028 const Elf_Internal_Sym *isym,
5029 asection **psec ATTRIBUTE_UNUSED,
5030 bfd_boolean newdef ATTRIBUTE_UNUSED,
5031 bfd_boolean olddef ATTRIBUTE_UNUSED,
5032 bfd *oldbfd ATTRIBUTE_UNUSED,
5033 const asection *oldsec ATTRIBUTE_UNUSED)
5035 ((struct ppc_link_hash_entry *) h)->fake = 0;
5036 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5037 ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1;
5041 /* This function makes an old ABI object reference to ".bar" cause the
5042 inclusion of a new ABI object archive that defines "bar".
5043 NAME is a symbol defined in an archive. Return a symbol in the hash
5044 table that might be satisfied by the archive symbols. */
5046 static struct elf_link_hash_entry *
5047 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5048 struct bfd_link_info *info,
5051 struct elf_link_hash_entry *h;
5055 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5057 /* Don't return this sym if it is a fake function descriptor
5058 created by add_symbol_adjust. */
5059 && !((struct ppc_link_hash_entry *) h)->fake)
5065 len = strlen (name);
5066 dot_name = bfd_alloc (abfd, len + 2);
5067 if (dot_name == NULL)
5068 return (struct elf_link_hash_entry *) 0 - 1;
5070 memcpy (dot_name + 1, name, len + 1);
5071 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5072 bfd_release (abfd, dot_name);
5076 /* This function satisfies all old ABI object references to ".bar" if a
5077 new ABI object defines "bar". Well, at least, undefined dot symbols
5078 are made weak. This stops later archive searches from including an
5079 object if we already have a function descriptor definition. It also
5080 prevents the linker complaining about undefined symbols.
5081 We also check and correct mismatched symbol visibility here. The
5082 most restrictive visibility of the function descriptor and the
5083 function entry symbol is used. */
5086 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5088 struct ppc_link_hash_table *htab;
5089 struct ppc_link_hash_entry *fdh;
5091 if (eh->elf.root.type == bfd_link_hash_warning)
5092 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5094 if (eh->elf.root.type == bfd_link_hash_indirect)
5097 if (eh->elf.root.root.string[0] != '.')
5100 htab = ppc_hash_table (info);
5104 fdh = lookup_fdh (eh, htab);
5106 && !bfd_link_relocatable (info)
5107 && (eh->elf.root.type == bfd_link_hash_undefined
5108 || eh->elf.root.type == bfd_link_hash_undefweak)
5109 && eh->elf.ref_regular)
5111 /* Make an undefined function descriptor sym, in order to
5112 pull in an --as-needed shared lib. Archives are handled
5114 fdh = make_fdh (info, eh);
5121 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5122 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5124 /* Make both descriptor and entry symbol have the most
5125 constraining visibility of either symbol. */
5126 if (entry_vis < descr_vis)
5127 fdh->elf.other += entry_vis - descr_vis;
5128 else if (entry_vis > descr_vis)
5129 eh->elf.other += descr_vis - entry_vis;
5131 /* Propagate reference flags from entry symbol to function
5132 descriptor symbol. */
5133 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5134 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5135 fdh->elf.ref_regular |= eh->elf.ref_regular;
5136 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5138 if (!fdh->elf.forced_local
5139 && fdh->elf.dynindx == -1
5140 && fdh->elf.versioned != versioned_hidden
5141 && (bfd_link_dll (info)
5142 || fdh->elf.def_dynamic
5143 || fdh->elf.ref_dynamic)
5144 && (eh->elf.ref_regular
5145 || eh->elf.def_regular))
5147 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5155 /* Set up opd section info and abiversion for IBFD, and process list
5156 of dot-symbols we made in link_hash_newfunc. */
5159 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5161 struct ppc_link_hash_table *htab;
5162 struct ppc_link_hash_entry **p, *eh;
5163 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5165 if (opd != NULL && opd->size != 0)
5167 if (abiversion (ibfd) == 0)
5168 set_abiversion (ibfd, 1);
5169 else if (abiversion (ibfd) >= 2)
5171 /* xgettext:c-format */
5172 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5174 ibfd, abiversion (ibfd));
5175 bfd_set_error (bfd_error_bad_value);
5179 if ((ibfd->flags & DYNAMIC) == 0
5180 && (opd->flags & SEC_RELOC) != 0
5181 && opd->reloc_count != 0
5182 && !bfd_is_abs_section (opd->output_section))
5184 /* Garbage collection needs some extra help with .opd sections.
5185 We don't want to necessarily keep everything referenced by
5186 relocs in .opd, as that would keep all functions. Instead,
5187 if we reference an .opd symbol (a function descriptor), we
5188 want to keep the function code symbol's section. This is
5189 easy for global symbols, but for local syms we need to keep
5190 information about the associated function section. */
5192 asection **opd_sym_map;
5194 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5195 opd_sym_map = bfd_zalloc (ibfd, amt);
5196 if (opd_sym_map == NULL)
5198 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5199 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5200 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5204 if (!is_ppc64_elf (info->output_bfd))
5206 htab = ppc_hash_table (info);
5210 /* For input files without an explicit abiversion in e_flags
5211 we should have flagged any with symbol st_other bits set
5212 as ELFv1 and above flagged those with .opd as ELFv2.
5213 Set the output abiversion if not yet set, and for any input
5214 still ambiguous, take its abiversion from the output.
5215 Differences in ABI are reported later. */
5216 if (abiversion (info->output_bfd) == 0)
5217 set_abiversion (info->output_bfd, abiversion (ibfd));
5218 else if (abiversion (ibfd) == 0)
5219 set_abiversion (ibfd, abiversion (info->output_bfd));
5221 p = &htab->dot_syms;
5222 while ((eh = *p) != NULL)
5225 if (&eh->elf == htab->elf.hgot)
5227 else if (htab->elf.hgot == NULL
5228 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5229 htab->elf.hgot = &eh->elf;
5230 else if (abiversion (ibfd) <= 1)
5232 htab->need_func_desc_adj = 1;
5233 if (!add_symbol_adjust (eh, info))
5236 p = &eh->u.next_dot_sym;
5241 /* Undo hash table changes when an --as-needed input file is determined
5242 not to be needed. */
5245 ppc64_elf_notice_as_needed (bfd *ibfd,
5246 struct bfd_link_info *info,
5247 enum notice_asneeded_action act)
5249 if (act == notice_not_needed)
5251 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5256 htab->dot_syms = NULL;
5258 return _bfd_elf_notice_as_needed (ibfd, info, act);
5261 /* If --just-symbols against a final linked binary, then assume we need
5262 toc adjusting stubs when calling functions defined there. */
5265 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5267 if ((sec->flags & SEC_CODE) != 0
5268 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5269 && is_ppc64_elf (sec->owner))
5271 if (abiversion (sec->owner) >= 2
5272 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5273 sec->has_toc_reloc = 1;
5275 _bfd_elf_link_just_syms (sec, info);
5278 static struct plt_entry **
5279 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5280 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5282 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5283 struct plt_entry **local_plt;
5284 unsigned char *local_got_tls_masks;
5286 if (local_got_ents == NULL)
5288 bfd_size_type size = symtab_hdr->sh_info;
5290 size *= (sizeof (*local_got_ents)
5291 + sizeof (*local_plt)
5292 + sizeof (*local_got_tls_masks));
5293 local_got_ents = bfd_zalloc (abfd, size);
5294 if (local_got_ents == NULL)
5296 elf_local_got_ents (abfd) = local_got_ents;
5299 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5301 struct got_entry *ent;
5303 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5304 if (ent->addend == r_addend
5305 && ent->owner == abfd
5306 && ent->tls_type == tls_type)
5310 bfd_size_type amt = sizeof (*ent);
5311 ent = bfd_alloc (abfd, amt);
5314 ent->next = local_got_ents[r_symndx];
5315 ent->addend = r_addend;
5317 ent->tls_type = tls_type;
5318 ent->is_indirect = FALSE;
5319 ent->got.refcount = 0;
5320 local_got_ents[r_symndx] = ent;
5322 ent->got.refcount += 1;
5325 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5326 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5327 local_got_tls_masks[r_symndx] |= tls_type;
5329 return local_plt + r_symndx;
5333 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5335 struct plt_entry *ent;
5337 for (ent = *plist; ent != NULL; ent = ent->next)
5338 if (ent->addend == addend)
5342 bfd_size_type amt = sizeof (*ent);
5343 ent = bfd_alloc (abfd, amt);
5347 ent->addend = addend;
5348 ent->plt.refcount = 0;
5351 ent->plt.refcount += 1;
5356 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5358 return (r_type == R_PPC64_REL24
5359 || r_type == R_PPC64_REL14
5360 || r_type == R_PPC64_REL14_BRTAKEN
5361 || r_type == R_PPC64_REL14_BRNTAKEN
5362 || r_type == R_PPC64_ADDR24
5363 || r_type == R_PPC64_ADDR14
5364 || r_type == R_PPC64_ADDR14_BRTAKEN
5365 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5368 /* Look through the relocs for a section during the first phase, and
5369 calculate needed space in the global offset table, procedure
5370 linkage table, and dynamic reloc sections. */
5373 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5374 asection *sec, const Elf_Internal_Rela *relocs)
5376 struct ppc_link_hash_table *htab;
5377 Elf_Internal_Shdr *symtab_hdr;
5378 struct elf_link_hash_entry **sym_hashes;
5379 const Elf_Internal_Rela *rel;
5380 const Elf_Internal_Rela *rel_end;
5382 asection **opd_sym_map;
5383 struct elf_link_hash_entry *tga, *dottga;
5385 if (bfd_link_relocatable (info))
5388 /* Don't do anything special with non-loaded, non-alloced sections.
5389 In particular, any relocs in such sections should not affect GOT
5390 and PLT reference counting (ie. we don't allow them to create GOT
5391 or PLT entries), there's no possibility or desire to optimize TLS
5392 relocs, and there's not much point in propagating relocs to shared
5393 libs that the dynamic linker won't relocate. */
5394 if ((sec->flags & SEC_ALLOC) == 0)
5397 BFD_ASSERT (is_ppc64_elf (abfd));
5399 htab = ppc_hash_table (info);
5403 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5404 FALSE, FALSE, TRUE);
5405 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5406 FALSE, FALSE, TRUE);
5407 symtab_hdr = &elf_symtab_hdr (abfd);
5408 sym_hashes = elf_sym_hashes (abfd);
5411 if (ppc64_elf_section_data (sec) != NULL
5412 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5413 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5415 rel_end = relocs + sec->reloc_count;
5416 for (rel = relocs; rel < rel_end; rel++)
5418 unsigned long r_symndx;
5419 struct elf_link_hash_entry *h;
5420 enum elf_ppc64_reloc_type r_type;
5422 struct _ppc64_elf_section_data *ppc64_sec;
5423 struct plt_entry **ifunc, **plt_list;
5425 r_symndx = ELF64_R_SYM (rel->r_info);
5426 if (r_symndx < symtab_hdr->sh_info)
5430 struct ppc_link_hash_entry *eh;
5432 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5433 h = elf_follow_link (h);
5434 eh = (struct ppc_link_hash_entry *) h;
5436 /* PR15323, ref flags aren't set for references in the same
5438 h->root.non_ir_ref_regular = 1;
5439 if (eh->is_func && eh->oh != NULL)
5440 eh->oh->elf.root.non_ir_ref_regular = 1;
5442 if (h == htab->elf.hgot)
5443 sec->has_toc_reloc = 1;
5450 if (h->type == STT_GNU_IFUNC)
5453 ifunc = &h->plt.plist;
5458 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5463 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5465 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5466 rel->r_addend, PLT_IFUNC);
5472 r_type = ELF64_R_TYPE (rel->r_info);
5477 /* These special tls relocs tie a call to __tls_get_addr with
5478 its parameter symbol. */
5481 case R_PPC64_GOT_TLSLD16:
5482 case R_PPC64_GOT_TLSLD16_LO:
5483 case R_PPC64_GOT_TLSLD16_HI:
5484 case R_PPC64_GOT_TLSLD16_HA:
5485 tls_type = TLS_TLS | TLS_LD;
5488 case R_PPC64_GOT_TLSGD16:
5489 case R_PPC64_GOT_TLSGD16_LO:
5490 case R_PPC64_GOT_TLSGD16_HI:
5491 case R_PPC64_GOT_TLSGD16_HA:
5492 tls_type = TLS_TLS | TLS_GD;
5495 case R_PPC64_GOT_TPREL16_DS:
5496 case R_PPC64_GOT_TPREL16_LO_DS:
5497 case R_PPC64_GOT_TPREL16_HI:
5498 case R_PPC64_GOT_TPREL16_HA:
5499 if (bfd_link_pic (info))
5500 info->flags |= DF_STATIC_TLS;
5501 tls_type = TLS_TLS | TLS_TPREL;
5504 case R_PPC64_GOT_DTPREL16_DS:
5505 case R_PPC64_GOT_DTPREL16_LO_DS:
5506 case R_PPC64_GOT_DTPREL16_HI:
5507 case R_PPC64_GOT_DTPREL16_HA:
5508 tls_type = TLS_TLS | TLS_DTPREL;
5510 sec->has_tls_reloc = 1;
5514 case R_PPC64_GOT16_DS:
5515 case R_PPC64_GOT16_HA:
5516 case R_PPC64_GOT16_HI:
5517 case R_PPC64_GOT16_LO:
5518 case R_PPC64_GOT16_LO_DS:
5519 /* This symbol requires a global offset table entry. */
5520 sec->has_toc_reloc = 1;
5521 if (r_type == R_PPC64_GOT_TLSLD16
5522 || r_type == R_PPC64_GOT_TLSGD16
5523 || r_type == R_PPC64_GOT_TPREL16_DS
5524 || r_type == R_PPC64_GOT_DTPREL16_DS
5525 || r_type == R_PPC64_GOT16
5526 || r_type == R_PPC64_GOT16_DS)
5528 htab->do_multi_toc = 1;
5529 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5532 if (ppc64_elf_tdata (abfd)->got == NULL
5533 && !create_got_section (abfd, info))
5538 struct ppc_link_hash_entry *eh;
5539 struct got_entry *ent;
5541 eh = (struct ppc_link_hash_entry *) h;
5542 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5543 if (ent->addend == rel->r_addend
5544 && ent->owner == abfd
5545 && ent->tls_type == tls_type)
5549 bfd_size_type amt = sizeof (*ent);
5550 ent = bfd_alloc (abfd, amt);
5553 ent->next = eh->elf.got.glist;
5554 ent->addend = rel->r_addend;
5556 ent->tls_type = tls_type;
5557 ent->is_indirect = FALSE;
5558 ent->got.refcount = 0;
5559 eh->elf.got.glist = ent;
5561 ent->got.refcount += 1;
5562 eh->tls_mask |= tls_type;
5565 /* This is a global offset table entry for a local symbol. */
5566 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5567 rel->r_addend, tls_type))
5570 /* We may also need a plt entry if the symbol turns out to be
5572 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5574 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5579 case R_PPC64_PLT16_HA:
5580 case R_PPC64_PLT16_HI:
5581 case R_PPC64_PLT16_LO:
5584 /* This symbol requires a procedure linkage table entry. */
5589 if (h->root.root.string[0] == '.'
5590 && h->root.root.string[1] != '\0')
5591 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5592 plt_list = &h->plt.plist;
5594 if (plt_list == NULL)
5596 /* It does not make sense to have a procedure linkage
5597 table entry for a non-ifunc local symbol. */
5598 info->callbacks->einfo
5599 /* xgettext:c-format */
5600 (_("%H: %s reloc against local symbol\n"),
5601 abfd, sec, rel->r_offset,
5602 ppc64_elf_howto_table[r_type]->name);
5603 bfd_set_error (bfd_error_bad_value);
5606 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5610 /* The following relocations don't need to propagate the
5611 relocation if linking a shared object since they are
5612 section relative. */
5613 case R_PPC64_SECTOFF:
5614 case R_PPC64_SECTOFF_LO:
5615 case R_PPC64_SECTOFF_HI:
5616 case R_PPC64_SECTOFF_HA:
5617 case R_PPC64_SECTOFF_DS:
5618 case R_PPC64_SECTOFF_LO_DS:
5619 case R_PPC64_DTPREL16:
5620 case R_PPC64_DTPREL16_LO:
5621 case R_PPC64_DTPREL16_HI:
5622 case R_PPC64_DTPREL16_HA:
5623 case R_PPC64_DTPREL16_DS:
5624 case R_PPC64_DTPREL16_LO_DS:
5625 case R_PPC64_DTPREL16_HIGH:
5626 case R_PPC64_DTPREL16_HIGHA:
5627 case R_PPC64_DTPREL16_HIGHER:
5628 case R_PPC64_DTPREL16_HIGHERA:
5629 case R_PPC64_DTPREL16_HIGHEST:
5630 case R_PPC64_DTPREL16_HIGHESTA:
5635 case R_PPC64_REL16_LO:
5636 case R_PPC64_REL16_HI:
5637 case R_PPC64_REL16_HA:
5638 case R_PPC64_REL16DX_HA:
5641 /* Not supported as a dynamic relocation. */
5642 case R_PPC64_ADDR64_LOCAL:
5643 if (bfd_link_pic (info))
5645 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5647 /* xgettext:c-format */
5648 info->callbacks->einfo (_("%H: %s reloc unsupported "
5649 "in shared libraries and PIEs.\n"),
5650 abfd, sec, rel->r_offset,
5651 ppc64_elf_howto_table[r_type]->name);
5652 bfd_set_error (bfd_error_bad_value);
5658 case R_PPC64_TOC16_DS:
5659 htab->do_multi_toc = 1;
5660 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5662 case R_PPC64_TOC16_LO:
5663 case R_PPC64_TOC16_HI:
5664 case R_PPC64_TOC16_HA:
5665 case R_PPC64_TOC16_LO_DS:
5666 sec->has_toc_reloc = 1;
5673 /* This relocation describes the C++ object vtable hierarchy.
5674 Reconstruct it for later use during GC. */
5675 case R_PPC64_GNU_VTINHERIT:
5676 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5680 /* This relocation describes which C++ vtable entries are actually
5681 used. Record for later use during GC. */
5682 case R_PPC64_GNU_VTENTRY:
5683 BFD_ASSERT (h != NULL);
5685 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5690 case R_PPC64_REL14_BRTAKEN:
5691 case R_PPC64_REL14_BRNTAKEN:
5693 asection *dest = NULL;
5695 /* Heuristic: If jumping outside our section, chances are
5696 we are going to need a stub. */
5699 /* If the sym is weak it may be overridden later, so
5700 don't assume we know where a weak sym lives. */
5701 if (h->root.type == bfd_link_hash_defined)
5702 dest = h->root.u.def.section;
5706 Elf_Internal_Sym *isym;
5708 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5713 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5717 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5726 if (h->root.root.string[0] == '.'
5727 && h->root.root.string[1] != '\0')
5728 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5730 if (h == tga || h == dottga)
5732 sec->has_tls_reloc = 1;
5734 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5735 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5736 /* We have a new-style __tls_get_addr call with
5740 /* Mark this section as having an old-style call. */
5741 sec->has_tls_get_addr_call = 1;
5743 plt_list = &h->plt.plist;
5746 /* We may need a .plt entry if the function this reloc
5747 refers to is in a shared lib. */
5749 && !update_plt_info (abfd, plt_list, rel->r_addend))
5753 case R_PPC64_ADDR14:
5754 case R_PPC64_ADDR14_BRNTAKEN:
5755 case R_PPC64_ADDR14_BRTAKEN:
5756 case R_PPC64_ADDR24:
5759 case R_PPC64_TPREL64:
5760 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5761 if (bfd_link_pic (info))
5762 info->flags |= DF_STATIC_TLS;
5765 case R_PPC64_DTPMOD64:
5766 if (rel + 1 < rel_end
5767 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5768 && rel[1].r_offset == rel->r_offset + 8)
5769 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5771 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5774 case R_PPC64_DTPREL64:
5775 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5777 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5778 && rel[-1].r_offset == rel->r_offset - 8)
5779 /* This is the second reloc of a dtpmod, dtprel pair.
5780 Don't mark with TLS_DTPREL. */
5784 sec->has_tls_reloc = 1;
5787 struct ppc_link_hash_entry *eh;
5788 eh = (struct ppc_link_hash_entry *) h;
5789 eh->tls_mask |= tls_type;
5792 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5793 rel->r_addend, tls_type))
5796 ppc64_sec = ppc64_elf_section_data (sec);
5797 if (ppc64_sec->sec_type != sec_toc)
5801 /* One extra to simplify get_tls_mask. */
5802 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5803 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5804 if (ppc64_sec->u.toc.symndx == NULL)
5806 amt = sec->size * sizeof (bfd_vma) / 8;
5807 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5808 if (ppc64_sec->u.toc.add == NULL)
5810 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5811 ppc64_sec->sec_type = sec_toc;
5813 BFD_ASSERT (rel->r_offset % 8 == 0);
5814 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5815 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5817 /* Mark the second slot of a GD or LD entry.
5818 -1 to indicate GD and -2 to indicate LD. */
5819 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5820 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5821 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5822 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5825 case R_PPC64_TPREL16:
5826 case R_PPC64_TPREL16_LO:
5827 case R_PPC64_TPREL16_HI:
5828 case R_PPC64_TPREL16_HA:
5829 case R_PPC64_TPREL16_DS:
5830 case R_PPC64_TPREL16_LO_DS:
5831 case R_PPC64_TPREL16_HIGH:
5832 case R_PPC64_TPREL16_HIGHA:
5833 case R_PPC64_TPREL16_HIGHER:
5834 case R_PPC64_TPREL16_HIGHERA:
5835 case R_PPC64_TPREL16_HIGHEST:
5836 case R_PPC64_TPREL16_HIGHESTA:
5837 if (bfd_link_pic (info))
5839 info->flags |= DF_STATIC_TLS;
5844 case R_PPC64_ADDR64:
5845 if (opd_sym_map != NULL
5846 && rel + 1 < rel_end
5847 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5850 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5854 Elf_Internal_Sym *isym;
5856 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5861 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5862 if (s != NULL && s != sec)
5863 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5868 case R_PPC64_ADDR16:
5869 case R_PPC64_ADDR16_DS:
5870 case R_PPC64_ADDR16_HA:
5871 case R_PPC64_ADDR16_HI:
5872 case R_PPC64_ADDR16_HIGH:
5873 case R_PPC64_ADDR16_HIGHA:
5874 case R_PPC64_ADDR16_HIGHER:
5875 case R_PPC64_ADDR16_HIGHERA:
5876 case R_PPC64_ADDR16_HIGHEST:
5877 case R_PPC64_ADDR16_HIGHESTA:
5878 case R_PPC64_ADDR16_LO:
5879 case R_PPC64_ADDR16_LO_DS:
5880 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5881 && rel->r_addend == 0)
5883 /* We may need a .plt entry if this reloc refers to a
5884 function in a shared lib. */
5885 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5887 h->pointer_equality_needed = 1;
5894 case R_PPC64_ADDR32:
5895 case R_PPC64_UADDR16:
5896 case R_PPC64_UADDR32:
5897 case R_PPC64_UADDR64:
5899 if (h != NULL && !bfd_link_pic (info))
5900 /* We may need a copy reloc. */
5903 /* Don't propagate .opd relocs. */
5904 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5907 /* If we are creating a shared library, and this is a reloc
5908 against a global symbol, or a non PC relative reloc
5909 against a local symbol, then we need to copy the reloc
5910 into the shared library. However, if we are linking with
5911 -Bsymbolic, we do not need to copy a reloc against a
5912 global symbol which is defined in an object we are
5913 including in the link (i.e., DEF_REGULAR is set). At
5914 this point we have not seen all the input files, so it is
5915 possible that DEF_REGULAR is not set now but will be set
5916 later (it is never cleared). In case of a weak definition,
5917 DEF_REGULAR may be cleared later by a strong definition in
5918 a shared library. We account for that possibility below by
5919 storing information in the dyn_relocs field of the hash
5920 table entry. A similar situation occurs when creating
5921 shared libraries and symbol visibility changes render the
5924 If on the other hand, we are creating an executable, we
5925 may need to keep relocations for symbols satisfied by a
5926 dynamic library if we manage to avoid copy relocs for the
5929 if ((bfd_link_pic (info)
5930 && (must_be_dyn_reloc (info, r_type)
5932 && (!SYMBOLIC_BIND (info, h)
5933 || h->root.type == bfd_link_hash_defweak
5934 || !h->def_regular))))
5935 || (ELIMINATE_COPY_RELOCS
5936 && !bfd_link_pic (info)
5938 && (h->root.type == bfd_link_hash_defweak
5939 || !h->def_regular))
5940 || (!bfd_link_pic (info)
5943 /* We must copy these reloc types into the output file.
5944 Create a reloc section in dynobj and make room for
5948 sreloc = _bfd_elf_make_dynamic_reloc_section
5949 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5955 /* If this is a global symbol, we count the number of
5956 relocations we need for this symbol. */
5959 struct elf_dyn_relocs *p;
5960 struct elf_dyn_relocs **head;
5962 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5964 if (p == NULL || p->sec != sec)
5966 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5976 if (!must_be_dyn_reloc (info, r_type))
5981 /* Track dynamic relocs needed for local syms too.
5982 We really need local syms available to do this
5984 struct ppc_dyn_relocs *p;
5985 struct ppc_dyn_relocs **head;
5986 bfd_boolean is_ifunc;
5989 Elf_Internal_Sym *isym;
5991 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5996 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6000 vpp = &elf_section_data (s)->local_dynrel;
6001 head = (struct ppc_dyn_relocs **) vpp;
6002 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
6004 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
6006 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
6008 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6014 p->ifunc = is_ifunc;
6030 /* Merge backend specific data from an object file to the output
6031 object file when linking. */
6034 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6036 bfd *obfd = info->output_bfd;
6037 unsigned long iflags, oflags;
6039 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6042 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6045 if (!_bfd_generic_verify_endian_match (ibfd, info))
6048 iflags = elf_elfheader (ibfd)->e_flags;
6049 oflags = elf_elfheader (obfd)->e_flags;
6051 if (iflags & ~EF_PPC64_ABI)
6054 /* xgettext:c-format */
6055 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6056 bfd_set_error (bfd_error_bad_value);
6059 else if (iflags != oflags && iflags != 0)
6062 /* xgettext:c-format */
6063 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6064 ibfd, iflags, oflags);
6065 bfd_set_error (bfd_error_bad_value);
6069 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6071 /* Merge Tag_compatibility attributes and any common GNU ones. */
6072 _bfd_elf_merge_object_attributes (ibfd, info);
6078 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6080 /* Print normal ELF private data. */
6081 _bfd_elf_print_private_bfd_data (abfd, ptr);
6083 if (elf_elfheader (abfd)->e_flags != 0)
6087 fprintf (file, _("private flags = 0x%lx:"),
6088 elf_elfheader (abfd)->e_flags);
6090 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6091 fprintf (file, _(" [abiv%ld]"),
6092 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6099 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6100 of the code entry point, and its section, which must be in the same
6101 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6104 opd_entry_value (asection *opd_sec,
6106 asection **code_sec,
6108 bfd_boolean in_code_sec)
6110 bfd *opd_bfd = opd_sec->owner;
6111 Elf_Internal_Rela *relocs;
6112 Elf_Internal_Rela *lo, *hi, *look;
6115 /* No relocs implies we are linking a --just-symbols object, or looking
6116 at a final linked executable with addr2line or somesuch. */
6117 if (opd_sec->reloc_count == 0)
6119 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6121 if (contents == NULL)
6123 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6124 return (bfd_vma) -1;
6125 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6128 /* PR 17512: file: 64b9dfbb. */
6129 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6130 return (bfd_vma) -1;
6132 val = bfd_get_64 (opd_bfd, contents + offset);
6133 if (code_sec != NULL)
6135 asection *sec, *likely = NULL;
6141 && val < sec->vma + sec->size)
6147 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6149 && (sec->flags & SEC_LOAD) != 0
6150 && (sec->flags & SEC_ALLOC) != 0)
6155 if (code_off != NULL)
6156 *code_off = val - likely->vma;
6162 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6164 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6166 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6167 /* PR 17512: file: df8e1fd6. */
6169 return (bfd_vma) -1;
6171 /* Go find the opd reloc at the sym address. */
6173 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6177 look = lo + (hi - lo) / 2;
6178 if (look->r_offset < offset)
6180 else if (look->r_offset > offset)
6184 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6186 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6187 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6189 unsigned long symndx = ELF64_R_SYM (look->r_info);
6190 asection *sec = NULL;
6192 if (symndx >= symtab_hdr->sh_info
6193 && elf_sym_hashes (opd_bfd) != NULL)
6195 struct elf_link_hash_entry **sym_hashes;
6196 struct elf_link_hash_entry *rh;
6198 sym_hashes = elf_sym_hashes (opd_bfd);
6199 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6202 rh = elf_follow_link (rh);
6203 if (rh->root.type != bfd_link_hash_defined
6204 && rh->root.type != bfd_link_hash_defweak)
6206 if (rh->root.u.def.section->owner == opd_bfd)
6208 val = rh->root.u.def.value;
6209 sec = rh->root.u.def.section;
6216 Elf_Internal_Sym *sym;
6218 if (symndx < symtab_hdr->sh_info)
6220 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6223 size_t symcnt = symtab_hdr->sh_info;
6224 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6229 symtab_hdr->contents = (bfd_byte *) sym;
6235 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6241 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6244 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6245 val = sym->st_value;
6248 val += look->r_addend;
6249 if (code_off != NULL)
6251 if (code_sec != NULL)
6253 if (in_code_sec && *code_sec != sec)
6258 if (sec->output_section != NULL)
6259 val += sec->output_section->vma + sec->output_offset;
6268 /* If the ELF symbol SYM might be a function in SEC, return the
6269 function size and set *CODE_OFF to the function's entry point,
6270 otherwise return zero. */
6272 static bfd_size_type
6273 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6278 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6279 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6283 if (!(sym->flags & BSF_SYNTHETIC))
6284 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6286 if (strcmp (sym->section->name, ".opd") == 0)
6288 struct _opd_sec_data *opd = get_opd_info (sym->section);
6289 bfd_vma symval = sym->value;
6292 && opd->adjust != NULL
6293 && elf_section_data (sym->section)->relocs != NULL)
6295 /* opd_entry_value will use cached relocs that have been
6296 adjusted, but with raw symbols. That means both local
6297 and global symbols need adjusting. */
6298 long adjust = opd->adjust[OPD_NDX (symval)];
6304 if (opd_entry_value (sym->section, symval,
6305 &sec, code_off, TRUE) == (bfd_vma) -1)
6307 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6308 symbol. This size has nothing to do with the code size of the
6309 function, which is what we're supposed to return, but the
6310 code size isn't available without looking up the dot-sym.
6311 However, doing that would be a waste of time particularly
6312 since elf_find_function will look at the dot-sym anyway.
6313 Now, elf_find_function will keep the largest size of any
6314 function sym found at the code address of interest, so return
6315 1 here to avoid it incorrectly caching a larger function size
6316 for a small function. This does mean we return the wrong
6317 size for a new-ABI function of size 24, but all that does is
6318 disable caching for such functions. */
6324 if (sym->section != sec)
6326 *code_off = sym->value;
6333 /* Return true if symbol is a strong function defined in an ELFv2
6334 object with st_other localentry bits of zero, ie. its local entry
6335 point coincides with its global entry point. */
6338 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6341 && h->type == STT_FUNC
6342 && h->root.type == bfd_link_hash_defined
6343 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6344 && !((struct ppc_link_hash_entry *) h)->non_zero_localentry
6345 && is_ppc64_elf (h->root.u.def.section->owner)
6346 && abiversion (h->root.u.def.section->owner) >= 2);
6349 /* Return true if symbol is defined in a regular object file. */
6352 is_static_defined (struct elf_link_hash_entry *h)
6354 return ((h->root.type == bfd_link_hash_defined
6355 || h->root.type == bfd_link_hash_defweak)
6356 && h->root.u.def.section != NULL
6357 && h->root.u.def.section->output_section != NULL);
6360 /* If FDH is a function descriptor symbol, return the associated code
6361 entry symbol if it is defined. Return NULL otherwise. */
6363 static struct ppc_link_hash_entry *
6364 defined_code_entry (struct ppc_link_hash_entry *fdh)
6366 if (fdh->is_func_descriptor)
6368 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6369 if (fh->elf.root.type == bfd_link_hash_defined
6370 || fh->elf.root.type == bfd_link_hash_defweak)
6376 /* If FH is a function code entry symbol, return the associated
6377 function descriptor symbol if it is defined. Return NULL otherwise. */
6379 static struct ppc_link_hash_entry *
6380 defined_func_desc (struct ppc_link_hash_entry *fh)
6383 && fh->oh->is_func_descriptor)
6385 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6386 if (fdh->elf.root.type == bfd_link_hash_defined
6387 || fdh->elf.root.type == bfd_link_hash_defweak)
6393 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6395 /* Garbage collect sections, after first dealing with dot-symbols. */
6398 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6400 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6402 if (htab != NULL && htab->need_func_desc_adj)
6404 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6405 htab->need_func_desc_adj = 0;
6407 return bfd_elf_gc_sections (abfd, info);
6410 /* Mark all our entry sym sections, both opd and code section. */
6413 ppc64_elf_gc_keep (struct bfd_link_info *info)
6415 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6416 struct bfd_sym_chain *sym;
6421 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6423 struct ppc_link_hash_entry *eh, *fh;
6426 eh = (struct ppc_link_hash_entry *)
6427 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6430 if (eh->elf.root.type != bfd_link_hash_defined
6431 && eh->elf.root.type != bfd_link_hash_defweak)
6434 fh = defined_code_entry (eh);
6437 sec = fh->elf.root.u.def.section;
6438 sec->flags |= SEC_KEEP;
6440 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6441 && opd_entry_value (eh->elf.root.u.def.section,
6442 eh->elf.root.u.def.value,
6443 &sec, NULL, FALSE) != (bfd_vma) -1)
6444 sec->flags |= SEC_KEEP;
6446 sec = eh->elf.root.u.def.section;
6447 sec->flags |= SEC_KEEP;
6451 /* Mark sections containing dynamically referenced symbols. When
6452 building shared libraries, we must assume that any visible symbol is
6456 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6458 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6459 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6460 struct ppc_link_hash_entry *fdh;
6461 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6463 /* Dynamic linking info is on the func descriptor sym. */
6464 fdh = defined_func_desc (eh);
6468 if ((eh->elf.root.type == bfd_link_hash_defined
6469 || eh->elf.root.type == bfd_link_hash_defweak)
6470 && (eh->elf.ref_dynamic
6471 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6472 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6473 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6474 && (!bfd_link_executable (info)
6475 || info->gc_keep_exported
6476 || info->export_dynamic
6479 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6480 && (eh->elf.versioned >= versioned
6481 || !bfd_hide_sym_by_version (info->version_info,
6482 eh->elf.root.root.string)))))
6485 struct ppc_link_hash_entry *fh;
6487 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6489 /* Function descriptor syms cause the associated
6490 function code sym section to be marked. */
6491 fh = defined_code_entry (eh);
6494 code_sec = fh->elf.root.u.def.section;
6495 code_sec->flags |= SEC_KEEP;
6497 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6498 && opd_entry_value (eh->elf.root.u.def.section,
6499 eh->elf.root.u.def.value,
6500 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6501 code_sec->flags |= SEC_KEEP;
6507 /* Return the section that should be marked against GC for a given
6511 ppc64_elf_gc_mark_hook (asection *sec,
6512 struct bfd_link_info *info,
6513 Elf_Internal_Rela *rel,
6514 struct elf_link_hash_entry *h,
6515 Elf_Internal_Sym *sym)
6519 /* Syms return NULL if we're marking .opd, so we avoid marking all
6520 function sections, as all functions are referenced in .opd. */
6522 if (get_opd_info (sec) != NULL)
6527 enum elf_ppc64_reloc_type r_type;
6528 struct ppc_link_hash_entry *eh, *fh, *fdh;
6530 r_type = ELF64_R_TYPE (rel->r_info);
6533 case R_PPC64_GNU_VTINHERIT:
6534 case R_PPC64_GNU_VTENTRY:
6538 switch (h->root.type)
6540 case bfd_link_hash_defined:
6541 case bfd_link_hash_defweak:
6542 eh = (struct ppc_link_hash_entry *) h;
6543 fdh = defined_func_desc (eh);
6546 /* -mcall-aixdesc code references the dot-symbol on
6547 a call reloc. Mark the function descriptor too
6548 against garbage collection. */
6550 if (fdh->elf.u.weakdef != NULL)
6551 fdh->elf.u.weakdef->mark = 1;
6555 /* Function descriptor syms cause the associated
6556 function code sym section to be marked. */
6557 fh = defined_code_entry (eh);
6560 /* They also mark their opd section. */
6561 eh->elf.root.u.def.section->gc_mark = 1;
6563 rsec = fh->elf.root.u.def.section;
6565 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6566 && opd_entry_value (eh->elf.root.u.def.section,
6567 eh->elf.root.u.def.value,
6568 &rsec, NULL, FALSE) != (bfd_vma) -1)
6569 eh->elf.root.u.def.section->gc_mark = 1;
6571 rsec = h->root.u.def.section;
6574 case bfd_link_hash_common:
6575 rsec = h->root.u.c.p->section;
6579 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6585 struct _opd_sec_data *opd;
6587 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6588 opd = get_opd_info (rsec);
6589 if (opd != NULL && opd->func_sec != NULL)
6593 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6600 /* Update the .got, .plt. and dynamic reloc reference counts for the
6601 section being removed. */
6604 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6605 asection *sec, const Elf_Internal_Rela *relocs)
6607 struct ppc_link_hash_table *htab;
6608 Elf_Internal_Shdr *symtab_hdr;
6609 struct elf_link_hash_entry **sym_hashes;
6610 struct got_entry **local_got_ents;
6611 const Elf_Internal_Rela *rel, *relend;
6613 if (bfd_link_relocatable (info))
6616 if ((sec->flags & SEC_ALLOC) == 0)
6619 elf_section_data (sec)->local_dynrel = NULL;
6621 htab = ppc_hash_table (info);
6625 symtab_hdr = &elf_symtab_hdr (abfd);
6626 sym_hashes = elf_sym_hashes (abfd);
6627 local_got_ents = elf_local_got_ents (abfd);
6629 relend = relocs + sec->reloc_count;
6630 for (rel = relocs; rel < relend; rel++)
6632 unsigned long r_symndx;
6633 enum elf_ppc64_reloc_type r_type;
6634 struct elf_link_hash_entry *h = NULL;
6635 struct plt_entry **plt_list = NULL;
6636 unsigned char tls_type = 0;
6638 r_symndx = ELF64_R_SYM (rel->r_info);
6639 r_type = ELF64_R_TYPE (rel->r_info);
6640 if (r_symndx >= symtab_hdr->sh_info)
6642 struct ppc_link_hash_entry *eh;
6643 struct elf_dyn_relocs **pp;
6644 struct elf_dyn_relocs *p;
6646 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6647 h = elf_follow_link (h);
6648 eh = (struct ppc_link_hash_entry *) h;
6650 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6653 /* Everything must go for SEC. */
6661 case R_PPC64_GOT_TLSLD16:
6662 case R_PPC64_GOT_TLSLD16_LO:
6663 case R_PPC64_GOT_TLSLD16_HI:
6664 case R_PPC64_GOT_TLSLD16_HA:
6665 tls_type = TLS_TLS | TLS_LD;
6668 case R_PPC64_GOT_TLSGD16:
6669 case R_PPC64_GOT_TLSGD16_LO:
6670 case R_PPC64_GOT_TLSGD16_HI:
6671 case R_PPC64_GOT_TLSGD16_HA:
6672 tls_type = TLS_TLS | TLS_GD;
6675 case R_PPC64_GOT_TPREL16_DS:
6676 case R_PPC64_GOT_TPREL16_LO_DS:
6677 case R_PPC64_GOT_TPREL16_HI:
6678 case R_PPC64_GOT_TPREL16_HA:
6679 tls_type = TLS_TLS | TLS_TPREL;
6682 case R_PPC64_GOT_DTPREL16_DS:
6683 case R_PPC64_GOT_DTPREL16_LO_DS:
6684 case R_PPC64_GOT_DTPREL16_HI:
6685 case R_PPC64_GOT_DTPREL16_HA:
6686 tls_type = TLS_TLS | TLS_DTPREL;
6690 case R_PPC64_GOT16_DS:
6691 case R_PPC64_GOT16_HA:
6692 case R_PPC64_GOT16_HI:
6693 case R_PPC64_GOT16_LO:
6694 case R_PPC64_GOT16_LO_DS:
6697 struct got_entry *ent;
6702 ent = local_got_ents[r_symndx];
6704 for (; ent != NULL; ent = ent->next)
6705 if (ent->addend == rel->r_addend
6706 && ent->owner == abfd
6707 && ent->tls_type == tls_type)
6711 if (ent->got.refcount > 0)
6712 ent->got.refcount -= 1;
6714 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
6715 plt_list = &h->plt.plist;
6718 case R_PPC64_PLT16_HA:
6719 case R_PPC64_PLT16_HI:
6720 case R_PPC64_PLT16_LO:
6724 case R_PPC64_REL14_BRNTAKEN:
6725 case R_PPC64_REL14_BRTAKEN:
6728 plt_list = &h->plt.plist;
6729 else if (local_got_ents != NULL)
6731 struct plt_entry **local_plt = (struct plt_entry **)
6732 (local_got_ents + symtab_hdr->sh_info);
6733 unsigned char *local_got_tls_masks = (unsigned char *)
6734 (local_plt + symtab_hdr->sh_info);
6735 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6736 plt_list = local_plt + r_symndx;
6740 case R_PPC64_ADDR64:
6741 case R_PPC64_ADDR16:
6742 case R_PPC64_ADDR16_DS:
6743 case R_PPC64_ADDR16_HA:
6744 case R_PPC64_ADDR16_HI:
6745 case R_PPC64_ADDR16_HIGH:
6746 case R_PPC64_ADDR16_HIGHA:
6747 case R_PPC64_ADDR16_HIGHER:
6748 case R_PPC64_ADDR16_HIGHERA:
6749 case R_PPC64_ADDR16_HIGHEST:
6750 case R_PPC64_ADDR16_HIGHESTA:
6751 case R_PPC64_ADDR16_LO:
6752 case R_PPC64_ADDR16_LO_DS:
6753 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
6754 && rel->r_addend == 0)
6755 plt_list = &h->plt.plist;
6761 if (plt_list != NULL)
6763 struct plt_entry *ent;
6765 for (ent = *plt_list; ent != NULL; ent = ent->next)
6766 if (ent->addend == rel->r_addend)
6768 if (ent != NULL && ent->plt.refcount > 0)
6769 ent->plt.refcount -= 1;
6775 /* The maximum size of .sfpr. */
6776 #define SFPR_MAX (218*4)
6778 struct sfpr_def_parms
6780 const char name[12];
6781 unsigned char lo, hi;
6782 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6783 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6786 /* Auto-generate _save*, _rest* functions in .sfpr.
6787 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6791 sfpr_define (struct bfd_link_info *info,
6792 const struct sfpr_def_parms *parm,
6795 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6797 size_t len = strlen (parm->name);
6798 bfd_boolean writing = FALSE;
6804 memcpy (sym, parm->name, len);
6807 for (i = parm->lo; i <= parm->hi; i++)
6809 struct ppc_link_hash_entry *h;
6811 sym[len + 0] = i / 10 + '0';
6812 sym[len + 1] = i % 10 + '0';
6813 h = (struct ppc_link_hash_entry *)
6814 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6815 if (stub_sec != NULL)
6818 && h->elf.root.type == bfd_link_hash_defined
6819 && h->elf.root.u.def.section == htab->sfpr)
6821 struct elf_link_hash_entry *s;
6823 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6824 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6827 if (s->root.type == bfd_link_hash_new
6828 || (s->root.type = bfd_link_hash_defined
6829 && s->root.u.def.section == stub_sec))
6831 s->root.type = bfd_link_hash_defined;
6832 s->root.u.def.section = stub_sec;
6833 s->root.u.def.value = (stub_sec->size
6834 + h->elf.root.u.def.value);
6837 s->ref_regular_nonweak = 1;
6838 s->forced_local = 1;
6840 s->root.linker_def = 1;
6848 if (!h->elf.def_regular)
6850 h->elf.root.type = bfd_link_hash_defined;
6851 h->elf.root.u.def.section = htab->sfpr;
6852 h->elf.root.u.def.value = htab->sfpr->size;
6853 h->elf.type = STT_FUNC;
6854 h->elf.def_regular = 1;
6856 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6858 if (htab->sfpr->contents == NULL)
6860 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6861 if (htab->sfpr->contents == NULL)
6868 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6870 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6872 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6873 htab->sfpr->size = p - htab->sfpr->contents;
6881 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6883 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6888 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6890 p = savegpr0 (abfd, p, r);
6891 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6893 bfd_put_32 (abfd, BLR, p);
6898 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6900 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6905 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6907 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6909 p = restgpr0 (abfd, p, r);
6910 bfd_put_32 (abfd, MTLR_R0, p);
6914 p = restgpr0 (abfd, p, 30);
6915 p = restgpr0 (abfd, p, 31);
6917 bfd_put_32 (abfd, BLR, p);
6922 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6924 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6929 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6931 p = savegpr1 (abfd, p, r);
6932 bfd_put_32 (abfd, BLR, p);
6937 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6939 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6944 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6946 p = restgpr1 (abfd, p, r);
6947 bfd_put_32 (abfd, BLR, p);
6952 savefpr (bfd *abfd, bfd_byte *p, int r)
6954 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6959 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6961 p = savefpr (abfd, p, r);
6962 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6964 bfd_put_32 (abfd, BLR, p);
6969 restfpr (bfd *abfd, bfd_byte *p, int r)
6971 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6976 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6978 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6980 p = restfpr (abfd, p, r);
6981 bfd_put_32 (abfd, MTLR_R0, p);
6985 p = restfpr (abfd, p, 30);
6986 p = restfpr (abfd, p, 31);
6988 bfd_put_32 (abfd, BLR, p);
6993 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6995 p = savefpr (abfd, p, r);
6996 bfd_put_32 (abfd, BLR, p);
7001 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
7003 p = restfpr (abfd, p, r);
7004 bfd_put_32 (abfd, BLR, p);
7009 savevr (bfd *abfd, bfd_byte *p, int r)
7011 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7013 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
7018 savevr_tail (bfd *abfd, bfd_byte *p, int r)
7020 p = savevr (abfd, p, r);
7021 bfd_put_32 (abfd, BLR, p);
7026 restvr (bfd *abfd, bfd_byte *p, int r)
7028 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7030 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
7035 restvr_tail (bfd *abfd, bfd_byte *p, int r)
7037 p = restvr (abfd, p, r);
7038 bfd_put_32 (abfd, BLR, p);
7042 /* Called via elf_link_hash_traverse to transfer dynamic linking
7043 information on function code symbol entries to their corresponding
7044 function descriptor symbol entries. */
7047 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
7049 struct bfd_link_info *info;
7050 struct ppc_link_hash_table *htab;
7051 struct ppc_link_hash_entry *fh;
7052 struct ppc_link_hash_entry *fdh;
7053 bfd_boolean force_local;
7055 fh = (struct ppc_link_hash_entry *) h;
7056 if (fh->elf.root.type == bfd_link_hash_indirect)
7062 if (fh->elf.root.root.string[0] != '.'
7063 || fh->elf.root.root.string[1] == '\0')
7067 htab = ppc_hash_table (info);
7071 /* Find the corresponding function descriptor symbol. */
7072 fdh = lookup_fdh (fh, htab);
7074 /* Resolve undefined references to dot-symbols as the value
7075 in the function descriptor, if we have one in a regular object.
7076 This is to satisfy cases like ".quad .foo". Calls to functions
7077 in dynamic objects are handled elsewhere. */
7078 if ((fh->elf.root.type == bfd_link_hash_undefined
7079 || fh->elf.root.type == bfd_link_hash_undefweak)
7080 && (fdh->elf.root.type == bfd_link_hash_defined
7081 || fdh->elf.root.type == bfd_link_hash_defweak)
7082 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7083 && opd_entry_value (fdh->elf.root.u.def.section,
7084 fdh->elf.root.u.def.value,
7085 &fh->elf.root.u.def.section,
7086 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7088 fh->elf.root.type = fdh->elf.root.type;
7089 fh->elf.forced_local = 1;
7090 fh->elf.def_regular = fdh->elf.def_regular;
7091 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7094 if (!fh->elf.dynamic)
7096 struct plt_entry *ent;
7098 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7099 if (ent->plt.refcount > 0)
7105 /* Create a descriptor as undefined if necessary. */
7107 && !bfd_link_executable (info)
7108 && (fh->elf.root.type == bfd_link_hash_undefined
7109 || fh->elf.root.type == bfd_link_hash_undefweak))
7111 fdh = make_fdh (info, fh);
7116 /* We can't support overriding of symbols on a fake descriptor. */
7119 && (fh->elf.root.type == bfd_link_hash_defined
7120 || fh->elf.root.type == bfd_link_hash_defweak))
7121 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7123 /* Transfer dynamic linking information to the function descriptor. */
7126 fdh->elf.ref_regular |= fh->elf.ref_regular;
7127 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7128 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7129 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7130 fdh->elf.dynamic |= fh->elf.dynamic;
7131 fdh->elf.needs_plt |= (fh->elf.needs_plt
7132 || fh->elf.type == STT_FUNC
7133 || fh->elf.type == STT_GNU_IFUNC);
7134 move_plt_plist (fh, fdh);
7136 if (!fdh->elf.forced_local
7137 && fh->elf.dynindx != -1)
7138 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7142 /* Now that the info is on the function descriptor, clear the
7143 function code sym info. Any function code syms for which we
7144 don't have a definition in a regular file, we force local.
7145 This prevents a shared library from exporting syms that have
7146 been imported from another library. Function code syms that
7147 are really in the library we must leave global to prevent the
7148 linker dragging in a definition from a static library. */
7149 force_local = (!fh->elf.def_regular
7151 || !fdh->elf.def_regular
7152 || fdh->elf.forced_local);
7153 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7158 static const struct sfpr_def_parms save_res_funcs[] =
7160 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7161 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7162 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7163 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7164 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7165 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7166 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7167 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7168 { "._savef", 14, 31, savefpr, savefpr1_tail },
7169 { "._restf", 14, 31, restfpr, restfpr1_tail },
7170 { "_savevr_", 20, 31, savevr, savevr_tail },
7171 { "_restvr_", 20, 31, restvr, restvr_tail }
7174 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7175 this hook to a) provide some gcc support functions, and b) transfer
7176 dynamic linking information gathered so far on function code symbol
7177 entries, to their corresponding function descriptor symbol entries. */
7180 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7181 struct bfd_link_info *info)
7183 struct ppc_link_hash_table *htab;
7185 htab = ppc_hash_table (info);
7189 /* Provide any missing _save* and _rest* functions. */
7190 if (htab->sfpr != NULL)
7194 htab->sfpr->size = 0;
7195 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7196 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7198 if (htab->sfpr->size == 0)
7199 htab->sfpr->flags |= SEC_EXCLUDE;
7202 if (bfd_link_relocatable (info))
7205 if (htab->elf.hgot != NULL)
7207 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7208 /* Make .TOC. defined so as to prevent it being made dynamic.
7209 The wrong value here is fixed later in ppc64_elf_set_toc. */
7210 if (!htab->elf.hgot->def_regular
7211 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7213 htab->elf.hgot->root.type = bfd_link_hash_defined;
7214 htab->elf.hgot->root.u.def.value = 0;
7215 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7216 htab->elf.hgot->def_regular = 1;
7217 htab->elf.hgot->root.linker_def = 1;
7219 htab->elf.hgot->type = STT_OBJECT;
7220 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7224 if (htab->need_func_desc_adj)
7226 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7227 htab->need_func_desc_adj = 0;
7233 /* Return true if we have dynamic relocs against H that apply to
7234 read-only sections. */
7237 readonly_dynrelocs (struct elf_link_hash_entry *h)
7239 struct ppc_link_hash_entry *eh;
7240 struct elf_dyn_relocs *p;
7242 eh = (struct ppc_link_hash_entry *) h;
7243 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7245 asection *s = p->sec->output_section;
7247 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7253 /* Return true if we have dynamic relocs against H or any of its weak
7254 aliases, that apply to read-only sections. */
7257 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7259 struct ppc_link_hash_entry *eh;
7261 eh = (struct ppc_link_hash_entry *) h;
7264 if (readonly_dynrelocs (&eh->elf))
7267 } while (eh != NULL && &eh->elf != h);
7272 /* Return whether EH has pc-relative dynamic relocs. */
7275 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7277 struct elf_dyn_relocs *p;
7279 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7280 if (p->pc_count != 0)
7285 /* Return true if a global entry stub will be created for H. Valid
7286 for ELFv2 before plt entries have been allocated. */
7289 global_entry_stub (struct elf_link_hash_entry *h)
7291 struct plt_entry *pent;
7293 if (!h->pointer_equality_needed
7297 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7298 if (pent->plt.refcount > 0
7299 && pent->addend == 0)
7305 /* Adjust a symbol defined by a dynamic object and referenced by a
7306 regular object. The current definition is in some section of the
7307 dynamic object, but we're not including those sections. We have to
7308 change the definition to something the rest of the link can
7312 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7313 struct elf_link_hash_entry *h)
7315 struct ppc_link_hash_table *htab;
7318 htab = ppc_hash_table (info);
7322 /* Deal with function syms. */
7323 if (h->type == STT_FUNC
7324 || h->type == STT_GNU_IFUNC
7327 /* Clear procedure linkage table information for any symbol that
7328 won't need a .plt entry. */
7329 struct plt_entry *ent;
7330 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7331 if (ent->plt.refcount > 0)
7334 || (h->type != STT_GNU_IFUNC
7335 && (SYMBOL_CALLS_LOCAL (info, h)
7336 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
7337 || ((struct ppc_link_hash_entry *) h)->save_res)
7339 h->plt.plist = NULL;
7341 h->pointer_equality_needed = 0;
7343 else if (abiversion (info->output_bfd) >= 2)
7345 /* Taking a function's address in a read/write section
7346 doesn't require us to define the function symbol in the
7347 executable on a global entry stub. A dynamic reloc can
7348 be used instead. The reason we prefer a few more dynamic
7349 relocs is that calling via a global entry stub costs a
7350 few more instructions, and pointer_equality_needed causes
7351 extra work in ld.so when resolving these symbols. */
7352 if (global_entry_stub (h)
7353 && !alias_readonly_dynrelocs (h))
7355 h->pointer_equality_needed = 0;
7356 /* After adjust_dynamic_symbol, non_got_ref set in
7357 the non-pic case means that dyn_relocs for this
7358 symbol should be discarded. */
7362 /* If making a plt entry, then we don't need copy relocs. */
7367 h->plt.plist = NULL;
7369 /* If this is a weak symbol, and there is a real definition, the
7370 processor independent code will have arranged for us to see the
7371 real definition first, and we can just use the same value. */
7372 if (h->u.weakdef != NULL)
7374 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7375 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7376 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7377 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7378 if (ELIMINATE_COPY_RELOCS)
7379 h->non_got_ref = h->u.weakdef->non_got_ref;
7383 /* If we are creating a shared library, we must presume that the
7384 only references to the symbol are via the global offset table.
7385 For such cases we need not do anything here; the relocations will
7386 be handled correctly by relocate_section. */
7387 if (bfd_link_pic (info))
7390 /* If there are no references to this symbol that do not use the
7391 GOT, we don't need to generate a copy reloc. */
7392 if (!h->non_got_ref)
7395 /* Don't generate a copy reloc for symbols defined in the executable. */
7396 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7398 /* If -z nocopyreloc was given, don't generate them either. */
7399 || info->nocopyreloc
7401 /* If we didn't find any dynamic relocs in read-only sections, then
7402 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7403 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7405 /* Protected variables do not work with .dynbss. The copy in
7406 .dynbss won't be used by the shared library with the protected
7407 definition for the variable. Text relocations are preferable
7408 to an incorrect program. */
7409 || h->protected_def)
7415 if (h->plt.plist != NULL)
7417 /* We should never get here, but unfortunately there are versions
7418 of gcc out there that improperly (for this ABI) put initialized
7419 function pointers, vtable refs and suchlike in read-only
7420 sections. Allow them to proceed, but warn that this might
7421 break at runtime. */
7422 info->callbacks->einfo
7423 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7424 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7425 h->root.root.string);
7428 /* This is a reference to a symbol defined by a dynamic object which
7429 is not a function. */
7431 /* We must allocate the symbol in our .dynbss section, which will
7432 become part of the .bss section of the executable. There will be
7433 an entry for this symbol in the .dynsym section. The dynamic
7434 object will contain position independent code, so all references
7435 from the dynamic object to this symbol will go through the global
7436 offset table. The dynamic linker will use the .dynsym entry to
7437 determine the address it must put in the global offset table, so
7438 both the dynamic object and the regular object will refer to the
7439 same memory location for the variable. */
7441 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7442 to copy the initial value out of the dynamic object and into the
7443 runtime process image. We need to remember the offset into the
7444 .rela.bss section we are going to use. */
7445 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7447 s = htab->elf.sdynrelro;
7448 srel = htab->elf.sreldynrelro;
7452 s = htab->elf.sdynbss;
7453 srel = htab->elf.srelbss;
7455 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7457 srel->size += sizeof (Elf64_External_Rela);
7461 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7464 /* If given a function descriptor symbol, hide both the function code
7465 sym and the descriptor. */
7467 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7468 struct elf_link_hash_entry *h,
7469 bfd_boolean force_local)
7471 struct ppc_link_hash_entry *eh;
7472 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7474 eh = (struct ppc_link_hash_entry *) h;
7475 if (eh->is_func_descriptor)
7477 struct ppc_link_hash_entry *fh = eh->oh;
7482 struct elf_link_hash_table *htab = elf_hash_table (info);
7485 /* We aren't supposed to use alloca in BFD because on
7486 systems which do not have alloca the version in libiberty
7487 calls xmalloc, which might cause the program to crash
7488 when it runs out of memory. This function doesn't have a
7489 return status, so there's no way to gracefully return an
7490 error. So cheat. We know that string[-1] can be safely
7491 accessed; It's either a string in an ELF string table,
7492 or allocated in an objalloc structure. */
7494 p = eh->elf.root.root.string - 1;
7497 fh = (struct ppc_link_hash_entry *)
7498 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7501 /* Unfortunately, if it so happens that the string we were
7502 looking for was allocated immediately before this string,
7503 then we overwrote the string terminator. That's the only
7504 reason the lookup should fail. */
7507 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7508 while (q >= eh->elf.root.root.string && *q == *p)
7510 if (q < eh->elf.root.root.string && *p == '.')
7511 fh = (struct ppc_link_hash_entry *)
7512 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7521 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7526 get_sym_h (struct elf_link_hash_entry **hp,
7527 Elf_Internal_Sym **symp,
7529 unsigned char **tls_maskp,
7530 Elf_Internal_Sym **locsymsp,
7531 unsigned long r_symndx,
7534 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7536 if (r_symndx >= symtab_hdr->sh_info)
7538 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7539 struct elf_link_hash_entry *h;
7541 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7542 h = elf_follow_link (h);
7550 if (symsecp != NULL)
7552 asection *symsec = NULL;
7553 if (h->root.type == bfd_link_hash_defined
7554 || h->root.type == bfd_link_hash_defweak)
7555 symsec = h->root.u.def.section;
7559 if (tls_maskp != NULL)
7561 struct ppc_link_hash_entry *eh;
7563 eh = (struct ppc_link_hash_entry *) h;
7564 *tls_maskp = &eh->tls_mask;
7569 Elf_Internal_Sym *sym;
7570 Elf_Internal_Sym *locsyms = *locsymsp;
7572 if (locsyms == NULL)
7574 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7575 if (locsyms == NULL)
7576 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7577 symtab_hdr->sh_info,
7578 0, NULL, NULL, NULL);
7579 if (locsyms == NULL)
7581 *locsymsp = locsyms;
7583 sym = locsyms + r_symndx;
7591 if (symsecp != NULL)
7592 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7594 if (tls_maskp != NULL)
7596 struct got_entry **lgot_ents;
7597 unsigned char *tls_mask;
7600 lgot_ents = elf_local_got_ents (ibfd);
7601 if (lgot_ents != NULL)
7603 struct plt_entry **local_plt = (struct plt_entry **)
7604 (lgot_ents + symtab_hdr->sh_info);
7605 unsigned char *lgot_masks = (unsigned char *)
7606 (local_plt + symtab_hdr->sh_info);
7607 tls_mask = &lgot_masks[r_symndx];
7609 *tls_maskp = tls_mask;
7615 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7616 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7617 type suitable for optimization, and 1 otherwise. */
7620 get_tls_mask (unsigned char **tls_maskp,
7621 unsigned long *toc_symndx,
7622 bfd_vma *toc_addend,
7623 Elf_Internal_Sym **locsymsp,
7624 const Elf_Internal_Rela *rel,
7627 unsigned long r_symndx;
7629 struct elf_link_hash_entry *h;
7630 Elf_Internal_Sym *sym;
7634 r_symndx = ELF64_R_SYM (rel->r_info);
7635 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7638 if ((*tls_maskp != NULL && **tls_maskp != 0)
7640 || ppc64_elf_section_data (sec) == NULL
7641 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7644 /* Look inside a TOC section too. */
7647 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7648 off = h->root.u.def.value;
7651 off = sym->st_value;
7652 off += rel->r_addend;
7653 BFD_ASSERT (off % 8 == 0);
7654 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7655 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7656 if (toc_symndx != NULL)
7657 *toc_symndx = r_symndx;
7658 if (toc_addend != NULL)
7659 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7660 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7662 if ((h == NULL || is_static_defined (h))
7663 && (next_r == -1 || next_r == -2))
7668 /* Find (or create) an entry in the tocsave hash table. */
7670 static struct tocsave_entry *
7671 tocsave_find (struct ppc_link_hash_table *htab,
7672 enum insert_option insert,
7673 Elf_Internal_Sym **local_syms,
7674 const Elf_Internal_Rela *irela,
7677 unsigned long r_indx;
7678 struct elf_link_hash_entry *h;
7679 Elf_Internal_Sym *sym;
7680 struct tocsave_entry ent, *p;
7682 struct tocsave_entry **slot;
7684 r_indx = ELF64_R_SYM (irela->r_info);
7685 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7687 if (ent.sec == NULL || ent.sec->output_section == NULL)
7690 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7695 ent.offset = h->root.u.def.value;
7697 ent.offset = sym->st_value;
7698 ent.offset += irela->r_addend;
7700 hash = tocsave_htab_hash (&ent);
7701 slot = ((struct tocsave_entry **)
7702 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7708 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7717 /* Adjust all global syms defined in opd sections. In gcc generated
7718 code for the old ABI, these will already have been done. */
7721 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7723 struct ppc_link_hash_entry *eh;
7725 struct _opd_sec_data *opd;
7727 if (h->root.type == bfd_link_hash_indirect)
7730 if (h->root.type != bfd_link_hash_defined
7731 && h->root.type != bfd_link_hash_defweak)
7734 eh = (struct ppc_link_hash_entry *) h;
7735 if (eh->adjust_done)
7738 sym_sec = eh->elf.root.u.def.section;
7739 opd = get_opd_info (sym_sec);
7740 if (opd != NULL && opd->adjust != NULL)
7742 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7745 /* This entry has been deleted. */
7746 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7749 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7750 if (discarded_section (dsec))
7752 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7756 eh->elf.root.u.def.value = 0;
7757 eh->elf.root.u.def.section = dsec;
7760 eh->elf.root.u.def.value += adjust;
7761 eh->adjust_done = 1;
7766 /* Handles decrementing dynamic reloc counts for the reloc specified by
7767 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7768 have already been determined. */
7771 dec_dynrel_count (bfd_vma r_info,
7773 struct bfd_link_info *info,
7774 Elf_Internal_Sym **local_syms,
7775 struct elf_link_hash_entry *h,
7776 Elf_Internal_Sym *sym)
7778 enum elf_ppc64_reloc_type r_type;
7779 asection *sym_sec = NULL;
7781 /* Can this reloc be dynamic? This switch, and later tests here
7782 should be kept in sync with the code in check_relocs. */
7783 r_type = ELF64_R_TYPE (r_info);
7789 case R_PPC64_TPREL16:
7790 case R_PPC64_TPREL16_LO:
7791 case R_PPC64_TPREL16_HI:
7792 case R_PPC64_TPREL16_HA:
7793 case R_PPC64_TPREL16_DS:
7794 case R_PPC64_TPREL16_LO_DS:
7795 case R_PPC64_TPREL16_HIGH:
7796 case R_PPC64_TPREL16_HIGHA:
7797 case R_PPC64_TPREL16_HIGHER:
7798 case R_PPC64_TPREL16_HIGHERA:
7799 case R_PPC64_TPREL16_HIGHEST:
7800 case R_PPC64_TPREL16_HIGHESTA:
7801 if (!bfd_link_pic (info))
7804 case R_PPC64_TPREL64:
7805 case R_PPC64_DTPMOD64:
7806 case R_PPC64_DTPREL64:
7807 case R_PPC64_ADDR64:
7811 case R_PPC64_ADDR14:
7812 case R_PPC64_ADDR14_BRNTAKEN:
7813 case R_PPC64_ADDR14_BRTAKEN:
7814 case R_PPC64_ADDR16:
7815 case R_PPC64_ADDR16_DS:
7816 case R_PPC64_ADDR16_HA:
7817 case R_PPC64_ADDR16_HI:
7818 case R_PPC64_ADDR16_HIGH:
7819 case R_PPC64_ADDR16_HIGHA:
7820 case R_PPC64_ADDR16_HIGHER:
7821 case R_PPC64_ADDR16_HIGHERA:
7822 case R_PPC64_ADDR16_HIGHEST:
7823 case R_PPC64_ADDR16_HIGHESTA:
7824 case R_PPC64_ADDR16_LO:
7825 case R_PPC64_ADDR16_LO_DS:
7826 case R_PPC64_ADDR24:
7827 case R_PPC64_ADDR32:
7828 case R_PPC64_UADDR16:
7829 case R_PPC64_UADDR32:
7830 case R_PPC64_UADDR64:
7835 if (local_syms != NULL)
7837 unsigned long r_symndx;
7838 bfd *ibfd = sec->owner;
7840 r_symndx = ELF64_R_SYM (r_info);
7841 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7845 if ((bfd_link_pic (info)
7846 && (must_be_dyn_reloc (info, r_type)
7848 && (!SYMBOLIC_BIND (info, h)
7849 || h->root.type == bfd_link_hash_defweak
7850 || !h->def_regular))))
7851 || (ELIMINATE_COPY_RELOCS
7852 && !bfd_link_pic (info)
7854 && (h->root.type == bfd_link_hash_defweak
7855 || !h->def_regular)))
7862 struct elf_dyn_relocs *p;
7863 struct elf_dyn_relocs **pp;
7864 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7866 /* elf_gc_sweep may have already removed all dyn relocs associated
7867 with local syms for a given section. Also, symbol flags are
7868 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7869 report a dynreloc miscount. */
7870 if (*pp == NULL && info->gc_sections)
7873 while ((p = *pp) != NULL)
7877 if (!must_be_dyn_reloc (info, r_type))
7889 struct ppc_dyn_relocs *p;
7890 struct ppc_dyn_relocs **pp;
7892 bfd_boolean is_ifunc;
7894 if (local_syms == NULL)
7895 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7896 if (sym_sec == NULL)
7899 vpp = &elf_section_data (sym_sec)->local_dynrel;
7900 pp = (struct ppc_dyn_relocs **) vpp;
7902 if (*pp == NULL && info->gc_sections)
7905 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7906 while ((p = *pp) != NULL)
7908 if (p->sec == sec && p->ifunc == is_ifunc)
7919 /* xgettext:c-format */
7920 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7922 bfd_set_error (bfd_error_bad_value);
7926 /* Remove unused Official Procedure Descriptor entries. Currently we
7927 only remove those associated with functions in discarded link-once
7928 sections, or weakly defined functions that have been overridden. It
7929 would be possible to remove many more entries for statically linked
7933 ppc64_elf_edit_opd (struct bfd_link_info *info)
7936 bfd_boolean some_edited = FALSE;
7937 asection *need_pad = NULL;
7938 struct ppc_link_hash_table *htab;
7940 htab = ppc_hash_table (info);
7944 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7947 Elf_Internal_Rela *relstart, *rel, *relend;
7948 Elf_Internal_Shdr *symtab_hdr;
7949 Elf_Internal_Sym *local_syms;
7950 struct _opd_sec_data *opd;
7951 bfd_boolean need_edit, add_aux_fields, broken;
7952 bfd_size_type cnt_16b = 0;
7954 if (!is_ppc64_elf (ibfd))
7957 sec = bfd_get_section_by_name (ibfd, ".opd");
7958 if (sec == NULL || sec->size == 0)
7961 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7964 if (sec->output_section == bfd_abs_section_ptr)
7967 /* Look through the section relocs. */
7968 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7972 symtab_hdr = &elf_symtab_hdr (ibfd);
7974 /* Read the relocations. */
7975 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7977 if (relstart == NULL)
7980 /* First run through the relocs to check they are sane, and to
7981 determine whether we need to edit this opd section. */
7985 relend = relstart + sec->reloc_count;
7986 for (rel = relstart; rel < relend; )
7988 enum elf_ppc64_reloc_type r_type;
7989 unsigned long r_symndx;
7991 struct elf_link_hash_entry *h;
7992 Elf_Internal_Sym *sym;
7995 /* .opd contains an array of 16 or 24 byte entries. We're
7996 only interested in the reloc pointing to a function entry
7998 offset = rel->r_offset;
7999 if (rel + 1 == relend
8000 || rel[1].r_offset != offset + 8)
8002 /* If someone messes with .opd alignment then after a
8003 "ld -r" we might have padding in the middle of .opd.
8004 Also, there's nothing to prevent someone putting
8005 something silly in .opd with the assembler. No .opd
8006 optimization for them! */
8009 (_("%B: .opd is not a regular array of opd entries"), ibfd);
8014 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
8015 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
8018 /* xgettext:c-format */
8019 (_("%B: unexpected reloc type %u in .opd section"),
8025 r_symndx = ELF64_R_SYM (rel->r_info);
8026 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8030 if (sym_sec == NULL || sym_sec->owner == NULL)
8032 const char *sym_name;
8034 sym_name = h->root.root.string;
8036 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8040 /* xgettext:c-format */
8041 (_("%B: undefined sym `%s' in .opd section"),
8047 /* opd entries are always for functions defined in the
8048 current input bfd. If the symbol isn't defined in the
8049 input bfd, then we won't be using the function in this
8050 bfd; It must be defined in a linkonce section in another
8051 bfd, or is weak. It's also possible that we are
8052 discarding the function due to a linker script /DISCARD/,
8053 which we test for via the output_section. */
8054 if (sym_sec->owner != ibfd
8055 || sym_sec->output_section == bfd_abs_section_ptr)
8059 if (rel + 1 == relend
8060 || (rel + 2 < relend
8061 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
8066 if (sec->size == offset + 24)
8071 if (sec->size == offset + 16)
8078 else if (rel + 1 < relend
8079 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8080 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8082 if (rel[0].r_offset == offset + 16)
8084 else if (rel[0].r_offset != offset + 24)
8091 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8093 if (!broken && (need_edit || add_aux_fields))
8095 Elf_Internal_Rela *write_rel;
8096 Elf_Internal_Shdr *rel_hdr;
8097 bfd_byte *rptr, *wptr;
8098 bfd_byte *new_contents;
8101 new_contents = NULL;
8102 amt = OPD_NDX (sec->size) * sizeof (long);
8103 opd = &ppc64_elf_section_data (sec)->u.opd;
8104 opd->adjust = bfd_zalloc (sec->owner, amt);
8105 if (opd->adjust == NULL)
8107 ppc64_elf_section_data (sec)->sec_type = sec_opd;
8109 /* This seems a waste of time as input .opd sections are all
8110 zeros as generated by gcc, but I suppose there's no reason
8111 this will always be so. We might start putting something in
8112 the third word of .opd entries. */
8113 if ((sec->flags & SEC_IN_MEMORY) == 0)
8116 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8121 if (local_syms != NULL
8122 && symtab_hdr->contents != (unsigned char *) local_syms)
8124 if (elf_section_data (sec)->relocs != relstart)
8128 sec->contents = loc;
8129 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8132 elf_section_data (sec)->relocs = relstart;
8134 new_contents = sec->contents;
8137 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8138 if (new_contents == NULL)
8142 wptr = new_contents;
8143 rptr = sec->contents;
8144 write_rel = relstart;
8145 for (rel = relstart; rel < relend; )
8147 unsigned long r_symndx;
8149 struct elf_link_hash_entry *h;
8150 struct ppc_link_hash_entry *fdh = NULL;
8151 Elf_Internal_Sym *sym;
8153 Elf_Internal_Rela *next_rel;
8156 r_symndx = ELF64_R_SYM (rel->r_info);
8157 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8162 if (next_rel + 1 == relend
8163 || (next_rel + 2 < relend
8164 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8167 /* See if the .opd entry is full 24 byte or
8168 16 byte (with fd_aux entry overlapped with next
8171 if (next_rel == relend)
8173 if (sec->size == rel->r_offset + 16)
8176 else if (next_rel->r_offset == rel->r_offset + 16)
8180 && h->root.root.string[0] == '.')
8182 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8185 fdh = ppc_follow_link (fdh);
8186 if (fdh->elf.root.type != bfd_link_hash_defined
8187 && fdh->elf.root.type != bfd_link_hash_defweak)
8192 skip = (sym_sec->owner != ibfd
8193 || sym_sec->output_section == bfd_abs_section_ptr);
8196 if (fdh != NULL && sym_sec->owner == ibfd)
8198 /* Arrange for the function descriptor sym
8200 fdh->elf.root.u.def.value = 0;
8201 fdh->elf.root.u.def.section = sym_sec;
8203 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8205 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8210 if (!dec_dynrel_count (rel->r_info, sec, info,
8214 if (++rel == next_rel)
8217 r_symndx = ELF64_R_SYM (rel->r_info);
8218 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8225 /* We'll be keeping this opd entry. */
8230 /* Redefine the function descriptor symbol to
8231 this location in the opd section. It is
8232 necessary to update the value here rather
8233 than using an array of adjustments as we do
8234 for local symbols, because various places
8235 in the generic ELF code use the value
8236 stored in u.def.value. */
8237 fdh->elf.root.u.def.value = wptr - new_contents;
8238 fdh->adjust_done = 1;
8241 /* Local syms are a bit tricky. We could
8242 tweak them as they can be cached, but
8243 we'd need to look through the local syms
8244 for the function descriptor sym which we
8245 don't have at the moment. So keep an
8246 array of adjustments. */
8247 adjust = (wptr - new_contents) - (rptr - sec->contents);
8248 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8251 memcpy (wptr, rptr, opd_ent_size);
8252 wptr += opd_ent_size;
8253 if (add_aux_fields && opd_ent_size == 16)
8255 memset (wptr, '\0', 8);
8259 /* We need to adjust any reloc offsets to point to the
8261 for ( ; rel != next_rel; ++rel)
8263 rel->r_offset += adjust;
8264 if (write_rel != rel)
8265 memcpy (write_rel, rel, sizeof (*rel));
8270 rptr += opd_ent_size;
8273 sec->size = wptr - new_contents;
8274 sec->reloc_count = write_rel - relstart;
8277 free (sec->contents);
8278 sec->contents = new_contents;
8281 /* Fudge the header size too, as this is used later in
8282 elf_bfd_final_link if we are emitting relocs. */
8283 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8284 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8287 else if (elf_section_data (sec)->relocs != relstart)
8290 if (local_syms != NULL
8291 && symtab_hdr->contents != (unsigned char *) local_syms)
8293 if (!info->keep_memory)
8296 symtab_hdr->contents = (unsigned char *) local_syms;
8301 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8303 /* If we are doing a final link and the last .opd entry is just 16 byte
8304 long, add a 8 byte padding after it. */
8305 if (need_pad != NULL && !bfd_link_relocatable (info))
8309 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8311 BFD_ASSERT (need_pad->size > 0);
8313 p = bfd_malloc (need_pad->size + 8);
8317 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8318 p, 0, need_pad->size))
8321 need_pad->contents = p;
8322 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8326 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8330 need_pad->contents = p;
8333 memset (need_pad->contents + need_pad->size, 0, 8);
8334 need_pad->size += 8;
8340 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8343 ppc64_elf_tls_setup (struct bfd_link_info *info)
8345 struct ppc_link_hash_table *htab;
8347 htab = ppc_hash_table (info);
8351 if (abiversion (info->output_bfd) == 1)
8354 if (htab->params->no_multi_toc)
8355 htab->do_multi_toc = 0;
8356 else if (!htab->do_multi_toc)
8357 htab->params->no_multi_toc = 1;
8359 /* Default to --no-plt-localentry, as this option can cause problems
8360 with symbol interposition. For example, glibc libpthread.so and
8361 libc.so duplicate many pthread symbols, with a fallback
8362 implementation in libc.so. In some cases the fallback does more
8363 work than the pthread implementation. __pthread_condattr_destroy
8364 is one such symbol: the libpthread.so implementation is
8365 localentry:0 while the libc.so implementation is localentry:8.
8366 An app that "cleverly" uses dlopen to only load necessary
8367 libraries at runtime may omit loading libpthread.so when not
8368 running multi-threaded, which then results in the libc.so
8369 fallback symbols being used and ld.so complaining. Now there
8370 are workarounds in ld (see non_zero_localentry) to detect the
8371 pthread situation, but that may not be the only case where
8372 --plt-localentry can cause trouble. */
8373 if (htab->params->plt_localentry0 < 0)
8374 htab->params->plt_localentry0 = 0;
8375 if (htab->params->plt_localentry0
8376 && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8377 FALSE, FALSE, FALSE) == NULL)
8378 info->callbacks->einfo
8379 (_("%P: warning: --plt-localentry is especially dangerous without "
8380 "ld.so support to detect ABI violations.\n"));
8382 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8383 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8384 FALSE, FALSE, TRUE));
8385 /* Move dynamic linking info to the function descriptor sym. */
8386 if (htab->tls_get_addr != NULL)
8387 func_desc_adjust (&htab->tls_get_addr->elf, info);
8388 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8389 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8390 FALSE, FALSE, TRUE));
8391 if (htab->params->tls_get_addr_opt)
8393 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8395 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8396 FALSE, FALSE, TRUE);
8398 func_desc_adjust (opt, info);
8399 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8400 FALSE, FALSE, TRUE);
8402 && (opt_fd->root.type == bfd_link_hash_defined
8403 || opt_fd->root.type == bfd_link_hash_defweak))
8405 /* If glibc supports an optimized __tls_get_addr call stub,
8406 signalled by the presence of __tls_get_addr_opt, and we'll
8407 be calling __tls_get_addr via a plt call stub, then
8408 make __tls_get_addr point to __tls_get_addr_opt. */
8409 tga_fd = &htab->tls_get_addr_fd->elf;
8410 if (htab->elf.dynamic_sections_created
8412 && (tga_fd->type == STT_FUNC
8413 || tga_fd->needs_plt)
8414 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8415 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8417 struct plt_entry *ent;
8419 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8420 if (ent->plt.refcount > 0)
8424 tga_fd->root.type = bfd_link_hash_indirect;
8425 tga_fd->root.u.i.link = &opt_fd->root;
8426 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8428 if (opt_fd->dynindx != -1)
8430 /* Use __tls_get_addr_opt in dynamic relocations. */
8431 opt_fd->dynindx = -1;
8432 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8433 opt_fd->dynstr_index);
8434 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8437 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8438 tga = &htab->tls_get_addr->elf;
8439 if (opt != NULL && tga != NULL)
8441 tga->root.type = bfd_link_hash_indirect;
8442 tga->root.u.i.link = &opt->root;
8443 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8445 _bfd_elf_link_hash_hide_symbol (info, opt,
8447 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8449 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8450 htab->tls_get_addr_fd->is_func_descriptor = 1;
8451 if (htab->tls_get_addr != NULL)
8453 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8454 htab->tls_get_addr->is_func = 1;
8459 else if (htab->params->tls_get_addr_opt < 0)
8460 htab->params->tls_get_addr_opt = 0;
8462 return _bfd_elf_tls_setup (info->output_bfd, info);
8465 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8469 branch_reloc_hash_match (const bfd *ibfd,
8470 const Elf_Internal_Rela *rel,
8471 const struct ppc_link_hash_entry *hash1,
8472 const struct ppc_link_hash_entry *hash2)
8474 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8475 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8476 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8478 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8480 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8481 struct elf_link_hash_entry *h;
8483 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8484 h = elf_follow_link (h);
8485 if (h == &hash1->elf || h == &hash2->elf)
8491 /* Run through all the TLS relocs looking for optimization
8492 opportunities. The linker has been hacked (see ppc64elf.em) to do
8493 a preliminary section layout so that we know the TLS segment
8494 offsets. We can't optimize earlier because some optimizations need
8495 to know the tp offset, and we need to optimize before allocating
8496 dynamic relocations. */
8499 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8503 struct ppc_link_hash_table *htab;
8504 unsigned char *toc_ref;
8507 if (!bfd_link_executable (info))
8510 htab = ppc_hash_table (info);
8514 /* Make two passes over the relocs. On the first pass, mark toc
8515 entries involved with tls relocs, and check that tls relocs
8516 involved in setting up a tls_get_addr call are indeed followed by
8517 such a call. If they are not, we can't do any tls optimization.
8518 On the second pass twiddle tls_mask flags to notify
8519 relocate_section that optimization can be done, and adjust got
8520 and plt refcounts. */
8522 for (pass = 0; pass < 2; ++pass)
8523 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8525 Elf_Internal_Sym *locsyms = NULL;
8526 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8528 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8529 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8531 Elf_Internal_Rela *relstart, *rel, *relend;
8532 bfd_boolean found_tls_get_addr_arg = 0;
8534 /* Read the relocations. */
8535 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8537 if (relstart == NULL)
8543 relend = relstart + sec->reloc_count;
8544 for (rel = relstart; rel < relend; rel++)
8546 enum elf_ppc64_reloc_type r_type;
8547 unsigned long r_symndx;
8548 struct elf_link_hash_entry *h;
8549 Elf_Internal_Sym *sym;
8551 unsigned char *tls_mask;
8552 unsigned char tls_set, tls_clear, tls_type = 0;
8554 bfd_boolean ok_tprel, is_local;
8555 long toc_ref_index = 0;
8556 int expecting_tls_get_addr = 0;
8557 bfd_boolean ret = FALSE;
8559 r_symndx = ELF64_R_SYM (rel->r_info);
8560 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8564 if (elf_section_data (sec)->relocs != relstart)
8566 if (toc_ref != NULL)
8569 && (elf_symtab_hdr (ibfd).contents
8570 != (unsigned char *) locsyms))
8577 if (h->root.type == bfd_link_hash_defined
8578 || h->root.type == bfd_link_hash_defweak)
8579 value = h->root.u.def.value;
8580 else if (h->root.type == bfd_link_hash_undefweak)
8584 found_tls_get_addr_arg = 0;
8589 /* Symbols referenced by TLS relocs must be of type
8590 STT_TLS. So no need for .opd local sym adjust. */
8591 value = sym->st_value;
8600 && h->root.type == bfd_link_hash_undefweak)
8602 else if (sym_sec != NULL
8603 && sym_sec->output_section != NULL)
8605 value += sym_sec->output_offset;
8606 value += sym_sec->output_section->vma;
8607 value -= htab->elf.tls_sec->vma;
8608 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8609 < (bfd_vma) 1 << 32);
8613 r_type = ELF64_R_TYPE (rel->r_info);
8614 /* If this section has old-style __tls_get_addr calls
8615 without marker relocs, then check that each
8616 __tls_get_addr call reloc is preceded by a reloc
8617 that conceivably belongs to the __tls_get_addr arg
8618 setup insn. If we don't find matching arg setup
8619 relocs, don't do any tls optimization. */
8621 && sec->has_tls_get_addr_call
8623 && (h == &htab->tls_get_addr->elf
8624 || h == &htab->tls_get_addr_fd->elf)
8625 && !found_tls_get_addr_arg
8626 && is_branch_reloc (r_type))
8628 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8629 "TLS optimization disabled\n"),
8630 ibfd, sec, rel->r_offset);
8635 found_tls_get_addr_arg = 0;
8638 case R_PPC64_GOT_TLSLD16:
8639 case R_PPC64_GOT_TLSLD16_LO:
8640 expecting_tls_get_addr = 1;
8641 found_tls_get_addr_arg = 1;
8644 case R_PPC64_GOT_TLSLD16_HI:
8645 case R_PPC64_GOT_TLSLD16_HA:
8646 /* These relocs should never be against a symbol
8647 defined in a shared lib. Leave them alone if
8648 that turns out to be the case. */
8655 tls_type = TLS_TLS | TLS_LD;
8658 case R_PPC64_GOT_TLSGD16:
8659 case R_PPC64_GOT_TLSGD16_LO:
8660 expecting_tls_get_addr = 1;
8661 found_tls_get_addr_arg = 1;
8664 case R_PPC64_GOT_TLSGD16_HI:
8665 case R_PPC64_GOT_TLSGD16_HA:
8671 tls_set = TLS_TLS | TLS_TPRELGD;
8673 tls_type = TLS_TLS | TLS_GD;
8676 case R_PPC64_GOT_TPREL16_DS:
8677 case R_PPC64_GOT_TPREL16_LO_DS:
8678 case R_PPC64_GOT_TPREL16_HI:
8679 case R_PPC64_GOT_TPREL16_HA:
8684 tls_clear = TLS_TPREL;
8685 tls_type = TLS_TLS | TLS_TPREL;
8692 found_tls_get_addr_arg = 1;
8697 case R_PPC64_TOC16_LO:
8698 if (sym_sec == NULL || sym_sec != toc)
8701 /* Mark this toc entry as referenced by a TLS
8702 code sequence. We can do that now in the
8703 case of R_PPC64_TLS, and after checking for
8704 tls_get_addr for the TOC16 relocs. */
8705 if (toc_ref == NULL)
8706 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8707 if (toc_ref == NULL)
8711 value = h->root.u.def.value;
8713 value = sym->st_value;
8714 value += rel->r_addend;
8717 BFD_ASSERT (value < toc->size
8718 && toc->output_offset % 8 == 0);
8719 toc_ref_index = (value + toc->output_offset) / 8;
8720 if (r_type == R_PPC64_TLS
8721 || r_type == R_PPC64_TLSGD
8722 || r_type == R_PPC64_TLSLD)
8724 toc_ref[toc_ref_index] = 1;
8728 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8733 expecting_tls_get_addr = 2;
8736 case R_PPC64_TPREL64:
8740 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8745 tls_set = TLS_EXPLICIT;
8746 tls_clear = TLS_TPREL;
8751 case R_PPC64_DTPMOD64:
8755 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8757 if (rel + 1 < relend
8759 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8760 && rel[1].r_offset == rel->r_offset + 8)
8764 tls_set = TLS_EXPLICIT | TLS_GD;
8767 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8776 tls_set = TLS_EXPLICIT;
8787 if (!expecting_tls_get_addr
8788 || !sec->has_tls_get_addr_call)
8791 if (rel + 1 < relend
8792 && branch_reloc_hash_match (ibfd, rel + 1,
8794 htab->tls_get_addr_fd))
8796 if (expecting_tls_get_addr == 2)
8798 /* Check for toc tls entries. */
8799 unsigned char *toc_tls;
8802 retval = get_tls_mask (&toc_tls, NULL, NULL,
8807 if (toc_tls != NULL)
8809 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8810 found_tls_get_addr_arg = 1;
8812 toc_ref[toc_ref_index] = 1;
8818 if (expecting_tls_get_addr != 1)
8821 /* Uh oh, we didn't find the expected call. We
8822 could just mark this symbol to exclude it
8823 from tls optimization but it's safer to skip
8824 the entire optimization. */
8825 /* xgettext:c-format */
8826 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8827 "TLS optimization disabled\n"),
8828 ibfd, sec, rel->r_offset);
8833 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8835 struct plt_entry *ent;
8836 for (ent = htab->tls_get_addr->elf.plt.plist;
8839 if (ent->addend == 0)
8841 if (ent->plt.refcount > 0)
8843 ent->plt.refcount -= 1;
8844 expecting_tls_get_addr = 0;
8850 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8852 struct plt_entry *ent;
8853 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8856 if (ent->addend == 0)
8858 if (ent->plt.refcount > 0)
8859 ent->plt.refcount -= 1;
8867 if ((tls_set & TLS_EXPLICIT) == 0)
8869 struct got_entry *ent;
8871 /* Adjust got entry for this reloc. */
8875 ent = elf_local_got_ents (ibfd)[r_symndx];
8877 for (; ent != NULL; ent = ent->next)
8878 if (ent->addend == rel->r_addend
8879 && ent->owner == ibfd
8880 && ent->tls_type == tls_type)
8887 /* We managed to get rid of a got entry. */
8888 if (ent->got.refcount > 0)
8889 ent->got.refcount -= 1;
8894 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8895 we'll lose one or two dyn relocs. */
8896 if (!dec_dynrel_count (rel->r_info, sec, info,
8900 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8902 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8908 *tls_mask |= tls_set;
8909 *tls_mask &= ~tls_clear;
8912 if (elf_section_data (sec)->relocs != relstart)
8917 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8919 if (!info->keep_memory)
8922 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8926 if (toc_ref != NULL)
8931 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8932 the values of any global symbols in a toc section that has been
8933 edited. Globals in toc sections should be a rarity, so this function
8934 sets a flag if any are found in toc sections other than the one just
8935 edited, so that further hash table traversals can be avoided. */
8937 struct adjust_toc_info
8940 unsigned long *skip;
8941 bfd_boolean global_toc_syms;
8944 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8947 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8949 struct ppc_link_hash_entry *eh;
8950 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8953 if (h->root.type != bfd_link_hash_defined
8954 && h->root.type != bfd_link_hash_defweak)
8957 eh = (struct ppc_link_hash_entry *) h;
8958 if (eh->adjust_done)
8961 if (eh->elf.root.u.def.section == toc_inf->toc)
8963 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8964 i = toc_inf->toc->rawsize >> 3;
8966 i = eh->elf.root.u.def.value >> 3;
8968 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8971 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8974 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8975 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8978 eh->elf.root.u.def.value -= toc_inf->skip[i];
8979 eh->adjust_done = 1;
8981 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8982 toc_inf->global_toc_syms = TRUE;
8987 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8988 on a _LO variety toc/got reloc. */
8991 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8993 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8994 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8995 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8996 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8997 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8998 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8999 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
9000 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
9001 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
9002 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
9003 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
9004 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
9005 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
9006 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
9007 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
9008 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
9009 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9010 /* Exclude lfqu by testing reloc. If relocs are ever
9011 defined for the reduced D field in psq_lu then those
9012 will need testing too. */
9013 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9014 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
9016 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
9017 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9018 /* Exclude stfqu. psq_stu as above for psq_lu. */
9019 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9020 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
9021 && (insn & 1) == 0));
9024 /* Examine all relocs referencing .toc sections in order to remove
9025 unused .toc entries. */
9028 ppc64_elf_edit_toc (struct bfd_link_info *info)
9031 struct adjust_toc_info toc_inf;
9032 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9034 htab->do_toc_opt = 1;
9035 toc_inf.global_toc_syms = TRUE;
9036 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9038 asection *toc, *sec;
9039 Elf_Internal_Shdr *symtab_hdr;
9040 Elf_Internal_Sym *local_syms;
9041 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
9042 unsigned long *skip, *drop;
9043 unsigned char *used;
9044 unsigned char *keep, last, some_unused;
9046 if (!is_ppc64_elf (ibfd))
9049 toc = bfd_get_section_by_name (ibfd, ".toc");
9052 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
9053 || discarded_section (toc))
9058 symtab_hdr = &elf_symtab_hdr (ibfd);
9060 /* Look at sections dropped from the final link. */
9063 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9065 if (sec->reloc_count == 0
9066 || !discarded_section (sec)
9067 || get_opd_info (sec)
9068 || (sec->flags & SEC_ALLOC) == 0
9069 || (sec->flags & SEC_DEBUGGING) != 0)
9072 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
9073 if (relstart == NULL)
9076 /* Run through the relocs to see which toc entries might be
9078 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9080 enum elf_ppc64_reloc_type r_type;
9081 unsigned long r_symndx;
9083 struct elf_link_hash_entry *h;
9084 Elf_Internal_Sym *sym;
9087 r_type = ELF64_R_TYPE (rel->r_info);
9094 case R_PPC64_TOC16_LO:
9095 case R_PPC64_TOC16_HI:
9096 case R_PPC64_TOC16_HA:
9097 case R_PPC64_TOC16_DS:
9098 case R_PPC64_TOC16_LO_DS:
9102 r_symndx = ELF64_R_SYM (rel->r_info);
9103 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9111 val = h->root.u.def.value;
9113 val = sym->st_value;
9114 val += rel->r_addend;
9116 if (val >= toc->size)
9119 /* Anything in the toc ought to be aligned to 8 bytes.
9120 If not, don't mark as unused. */
9126 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9131 skip[val >> 3] = ref_from_discarded;
9134 if (elf_section_data (sec)->relocs != relstart)
9138 /* For largetoc loads of address constants, we can convert
9139 . addis rx,2,addr@got@ha
9140 . ld ry,addr@got@l(rx)
9142 . addis rx,2,addr@toc@ha
9143 . addi ry,rx,addr@toc@l
9144 when addr is within 2G of the toc pointer. This then means
9145 that the word storing "addr" in the toc is no longer needed. */
9147 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9148 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9149 && toc->reloc_count != 0)
9151 /* Read toc relocs. */
9152 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9154 if (toc_relocs == NULL)
9157 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9159 enum elf_ppc64_reloc_type r_type;
9160 unsigned long r_symndx;
9162 struct elf_link_hash_entry *h;
9163 Elf_Internal_Sym *sym;
9166 r_type = ELF64_R_TYPE (rel->r_info);
9167 if (r_type != R_PPC64_ADDR64)
9170 r_symndx = ELF64_R_SYM (rel->r_info);
9171 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9176 || sym_sec->output_section == NULL
9177 || discarded_section (sym_sec))
9180 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9185 if (h->type == STT_GNU_IFUNC)
9187 val = h->root.u.def.value;
9191 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9193 val = sym->st_value;
9195 val += rel->r_addend;
9196 val += sym_sec->output_section->vma + sym_sec->output_offset;
9198 /* We don't yet know the exact toc pointer value, but we
9199 know it will be somewhere in the toc section. Don't
9200 optimize if the difference from any possible toc
9201 pointer is outside [ff..f80008000, 7fff7fff]. */
9202 addr = toc->output_section->vma + TOC_BASE_OFF;
9203 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9206 addr = toc->output_section->vma + toc->output_section->rawsize;
9207 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9212 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9217 skip[rel->r_offset >> 3]
9218 |= can_optimize | ((rel - toc_relocs) << 2);
9225 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9229 if (local_syms != NULL
9230 && symtab_hdr->contents != (unsigned char *) local_syms)
9234 && elf_section_data (sec)->relocs != relstart)
9236 if (toc_relocs != NULL
9237 && elf_section_data (toc)->relocs != toc_relocs)
9244 /* Now check all kept sections that might reference the toc.
9245 Check the toc itself last. */
9246 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9249 sec = (sec == toc ? NULL
9250 : sec->next == NULL ? toc
9251 : sec->next == toc && toc->next ? toc->next
9256 if (sec->reloc_count == 0
9257 || discarded_section (sec)
9258 || get_opd_info (sec)
9259 || (sec->flags & SEC_ALLOC) == 0
9260 || (sec->flags & SEC_DEBUGGING) != 0)
9263 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9265 if (relstart == NULL)
9271 /* Mark toc entries referenced as used. */
9275 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9277 enum elf_ppc64_reloc_type r_type;
9278 unsigned long r_symndx;
9280 struct elf_link_hash_entry *h;
9281 Elf_Internal_Sym *sym;
9283 enum {no_check, check_lo, check_ha} insn_check;
9285 r_type = ELF64_R_TYPE (rel->r_info);
9289 insn_check = no_check;
9292 case R_PPC64_GOT_TLSLD16_HA:
9293 case R_PPC64_GOT_TLSGD16_HA:
9294 case R_PPC64_GOT_TPREL16_HA:
9295 case R_PPC64_GOT_DTPREL16_HA:
9296 case R_PPC64_GOT16_HA:
9297 case R_PPC64_TOC16_HA:
9298 insn_check = check_ha;
9301 case R_PPC64_GOT_TLSLD16_LO:
9302 case R_PPC64_GOT_TLSGD16_LO:
9303 case R_PPC64_GOT_TPREL16_LO_DS:
9304 case R_PPC64_GOT_DTPREL16_LO_DS:
9305 case R_PPC64_GOT16_LO:
9306 case R_PPC64_GOT16_LO_DS:
9307 case R_PPC64_TOC16_LO:
9308 case R_PPC64_TOC16_LO_DS:
9309 insn_check = check_lo;
9313 if (insn_check != no_check)
9315 bfd_vma off = rel->r_offset & ~3;
9316 unsigned char buf[4];
9319 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9324 insn = bfd_get_32 (ibfd, buf);
9325 if (insn_check == check_lo
9326 ? !ok_lo_toc_insn (insn, r_type)
9327 : ((insn & ((0x3f << 26) | 0x1f << 16))
9328 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9332 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9333 sprintf (str, "%#08x", insn);
9334 info->callbacks->einfo
9335 /* xgettext:c-format */
9336 (_("%H: toc optimization is not supported for"
9337 " %s instruction.\n"),
9338 ibfd, sec, rel->r_offset & ~3, str);
9345 case R_PPC64_TOC16_LO:
9346 case R_PPC64_TOC16_HI:
9347 case R_PPC64_TOC16_HA:
9348 case R_PPC64_TOC16_DS:
9349 case R_PPC64_TOC16_LO_DS:
9350 /* In case we're taking addresses of toc entries. */
9351 case R_PPC64_ADDR64:
9358 r_symndx = ELF64_R_SYM (rel->r_info);
9359 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9370 val = h->root.u.def.value;
9372 val = sym->st_value;
9373 val += rel->r_addend;
9375 if (val >= toc->size)
9378 if ((skip[val >> 3] & can_optimize) != 0)
9385 case R_PPC64_TOC16_HA:
9388 case R_PPC64_TOC16_LO_DS:
9389 off = rel->r_offset;
9390 off += (bfd_big_endian (ibfd) ? -2 : 3);
9391 if (!bfd_get_section_contents (ibfd, sec, &opc,
9397 if ((opc & (0x3f << 2)) == (58u << 2))
9402 /* Wrong sort of reloc, or not a ld. We may
9403 as well clear ref_from_discarded too. */
9410 /* For the toc section, we only mark as used if this
9411 entry itself isn't unused. */
9412 else if ((used[rel->r_offset >> 3]
9413 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9416 /* Do all the relocs again, to catch reference
9425 if (elf_section_data (sec)->relocs != relstart)
9429 /* Merge the used and skip arrays. Assume that TOC
9430 doublewords not appearing as either used or unused belong
9431 to an entry more than one doubleword in size. */
9432 for (drop = skip, keep = used, last = 0, some_unused = 0;
9433 drop < skip + (toc->size + 7) / 8;
9438 *drop &= ~ref_from_discarded;
9439 if ((*drop & can_optimize) != 0)
9443 else if ((*drop & ref_from_discarded) != 0)
9446 last = ref_from_discarded;
9456 bfd_byte *contents, *src;
9458 Elf_Internal_Sym *sym;
9459 bfd_boolean local_toc_syms = FALSE;
9461 /* Shuffle the toc contents, and at the same time convert the
9462 skip array from booleans into offsets. */
9463 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9466 elf_section_data (toc)->this_hdr.contents = contents;
9468 for (src = contents, off = 0, drop = skip;
9469 src < contents + toc->size;
9472 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9477 memcpy (src - off, src, 8);
9481 toc->rawsize = toc->size;
9482 toc->size = src - contents - off;
9484 /* Adjust addends for relocs against the toc section sym,
9485 and optimize any accesses we can. */
9486 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9488 if (sec->reloc_count == 0
9489 || discarded_section (sec))
9492 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9494 if (relstart == NULL)
9497 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9499 enum elf_ppc64_reloc_type r_type;
9500 unsigned long r_symndx;
9502 struct elf_link_hash_entry *h;
9505 r_type = ELF64_R_TYPE (rel->r_info);
9512 case R_PPC64_TOC16_LO:
9513 case R_PPC64_TOC16_HI:
9514 case R_PPC64_TOC16_HA:
9515 case R_PPC64_TOC16_DS:
9516 case R_PPC64_TOC16_LO_DS:
9517 case R_PPC64_ADDR64:
9521 r_symndx = ELF64_R_SYM (rel->r_info);
9522 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9530 val = h->root.u.def.value;
9533 val = sym->st_value;
9535 local_toc_syms = TRUE;
9538 val += rel->r_addend;
9540 if (val > toc->rawsize)
9542 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9544 else if ((skip[val >> 3] & can_optimize) != 0)
9546 Elf_Internal_Rela *tocrel
9547 = toc_relocs + (skip[val >> 3] >> 2);
9548 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9552 case R_PPC64_TOC16_HA:
9553 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9556 case R_PPC64_TOC16_LO_DS:
9557 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9561 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9563 info->callbacks->einfo
9564 /* xgettext:c-format */
9565 (_("%H: %s references "
9566 "optimized away TOC entry\n"),
9567 ibfd, sec, rel->r_offset,
9568 ppc64_elf_howto_table[r_type]->name);
9569 bfd_set_error (bfd_error_bad_value);
9572 rel->r_addend = tocrel->r_addend;
9573 elf_section_data (sec)->relocs = relstart;
9577 if (h != NULL || sym->st_value != 0)
9580 rel->r_addend -= skip[val >> 3];
9581 elf_section_data (sec)->relocs = relstart;
9584 if (elf_section_data (sec)->relocs != relstart)
9588 /* We shouldn't have local or global symbols defined in the TOC,
9589 but handle them anyway. */
9590 if (local_syms != NULL)
9591 for (sym = local_syms;
9592 sym < local_syms + symtab_hdr->sh_info;
9594 if (sym->st_value != 0
9595 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9599 if (sym->st_value > toc->rawsize)
9600 i = toc->rawsize >> 3;
9602 i = sym->st_value >> 3;
9604 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9608 (_("%s defined on removed toc entry"),
9609 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9612 while ((skip[i] & (ref_from_discarded | can_optimize)));
9613 sym->st_value = (bfd_vma) i << 3;
9616 sym->st_value -= skip[i];
9617 symtab_hdr->contents = (unsigned char *) local_syms;
9620 /* Adjust any global syms defined in this toc input section. */
9621 if (toc_inf.global_toc_syms)
9624 toc_inf.skip = skip;
9625 toc_inf.global_toc_syms = FALSE;
9626 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9630 if (toc->reloc_count != 0)
9632 Elf_Internal_Shdr *rel_hdr;
9633 Elf_Internal_Rela *wrel;
9636 /* Remove unused toc relocs, and adjust those we keep. */
9637 if (toc_relocs == NULL)
9638 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9640 if (toc_relocs == NULL)
9644 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9645 if ((skip[rel->r_offset >> 3]
9646 & (ref_from_discarded | can_optimize)) == 0)
9648 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9649 wrel->r_info = rel->r_info;
9650 wrel->r_addend = rel->r_addend;
9653 else if (!dec_dynrel_count (rel->r_info, toc, info,
9654 &local_syms, NULL, NULL))
9657 elf_section_data (toc)->relocs = toc_relocs;
9658 toc->reloc_count = wrel - toc_relocs;
9659 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9660 sz = rel_hdr->sh_entsize;
9661 rel_hdr->sh_size = toc->reloc_count * sz;
9664 else if (toc_relocs != NULL
9665 && elf_section_data (toc)->relocs != toc_relocs)
9668 if (local_syms != NULL
9669 && symtab_hdr->contents != (unsigned char *) local_syms)
9671 if (!info->keep_memory)
9674 symtab_hdr->contents = (unsigned char *) local_syms;
9682 /* Return true iff input section I references the TOC using
9683 instructions limited to +/-32k offsets. */
9686 ppc64_elf_has_small_toc_reloc (asection *i)
9688 return (is_ppc64_elf (i->owner)
9689 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9692 /* Allocate space for one GOT entry. */
9695 allocate_got (struct elf_link_hash_entry *h,
9696 struct bfd_link_info *info,
9697 struct got_entry *gent)
9699 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9700 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9701 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9703 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9704 ? 2 : 1) * sizeof (Elf64_External_Rela);
9705 asection *got = ppc64_elf_tdata (gent->owner)->got;
9707 gent->got.offset = got->size;
9708 got->size += entsize;
9710 if (h->type == STT_GNU_IFUNC)
9712 htab->elf.irelplt->size += rentsize;
9713 htab->got_reli_size += rentsize;
9715 else if ((bfd_link_pic (info)
9716 || (htab->elf.dynamic_sections_created
9718 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9719 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9721 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9722 relgot->size += rentsize;
9726 /* This function merges got entries in the same toc group. */
9729 merge_got_entries (struct got_entry **pent)
9731 struct got_entry *ent, *ent2;
9733 for (ent = *pent; ent != NULL; ent = ent->next)
9734 if (!ent->is_indirect)
9735 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9736 if (!ent2->is_indirect
9737 && ent2->addend == ent->addend
9738 && ent2->tls_type == ent->tls_type
9739 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9741 ent2->is_indirect = TRUE;
9742 ent2->got.ent = ent;
9746 /* If H is undefined, make it dynamic if that makes sense. */
9749 ensure_undef_dynamic (struct bfd_link_info *info,
9750 struct elf_link_hash_entry *h)
9752 struct elf_link_hash_table *htab = elf_hash_table (info);
9754 if (htab->dynamic_sections_created
9755 && ((info->dynamic_undefined_weak != 0
9756 && h->root.type == bfd_link_hash_undefweak)
9757 || h->root.type == bfd_link_hash_undefined)
9760 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9761 return bfd_elf_link_record_dynamic_symbol (info, h);
9765 /* Allocate space in .plt, .got and associated reloc sections for
9769 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9771 struct bfd_link_info *info;
9772 struct ppc_link_hash_table *htab;
9774 struct ppc_link_hash_entry *eh;
9775 struct got_entry **pgent, *gent;
9777 if (h->root.type == bfd_link_hash_indirect)
9780 info = (struct bfd_link_info *) inf;
9781 htab = ppc_hash_table (info);
9785 eh = (struct ppc_link_hash_entry *) h;
9786 /* Run through the TLS GD got entries first if we're changing them
9788 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9789 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9790 if (gent->got.refcount > 0
9791 && (gent->tls_type & TLS_GD) != 0)
9793 /* This was a GD entry that has been converted to TPREL. If
9794 there happens to be a TPREL entry we can use that one. */
9795 struct got_entry *ent;
9796 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9797 if (ent->got.refcount > 0
9798 && (ent->tls_type & TLS_TPREL) != 0
9799 && ent->addend == gent->addend
9800 && ent->owner == gent->owner)
9802 gent->got.refcount = 0;
9806 /* If not, then we'll be using our own TPREL entry. */
9807 if (gent->got.refcount != 0)
9808 gent->tls_type = TLS_TLS | TLS_TPREL;
9811 /* Remove any list entry that won't generate a word in the GOT before
9812 we call merge_got_entries. Otherwise we risk merging to empty
9814 pgent = &h->got.glist;
9815 while ((gent = *pgent) != NULL)
9816 if (gent->got.refcount > 0)
9818 if ((gent->tls_type & TLS_LD) != 0
9821 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9822 *pgent = gent->next;
9825 pgent = &gent->next;
9828 *pgent = gent->next;
9830 if (!htab->do_multi_toc)
9831 merge_got_entries (&h->got.glist);
9833 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9834 if (!gent->is_indirect)
9836 /* Make sure this symbol is output as a dynamic symbol. */
9837 if (!ensure_undef_dynamic (info, h))
9840 if (!is_ppc64_elf (gent->owner))
9843 allocate_got (h, info, gent);
9846 /* If no dynamic sections we can't have dynamic relocs, except for
9847 IFUNCs which are handled even in static executables. */
9848 if (!htab->elf.dynamic_sections_created
9849 && h->type != STT_GNU_IFUNC)
9850 eh->dyn_relocs = NULL;
9852 /* Also discard relocs on undefined weak syms with non-default
9853 visibility, or when dynamic_undefined_weak says so. */
9854 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9855 eh->dyn_relocs = NULL;
9857 if (eh->dyn_relocs != NULL)
9859 struct elf_dyn_relocs *p, **pp;
9861 /* In the shared -Bsymbolic case, discard space allocated for
9862 dynamic pc-relative relocs against symbols which turn out to
9863 be defined in regular objects. For the normal shared case,
9864 discard space for relocs that have become local due to symbol
9865 visibility changes. */
9867 if (bfd_link_pic (info))
9869 /* Relocs that use pc_count are those that appear on a call
9870 insn, or certain REL relocs (see must_be_dyn_reloc) that
9871 can be generated via assembly. We want calls to
9872 protected symbols to resolve directly to the function
9873 rather than going via the plt. If people want function
9874 pointer comparisons to work as expected then they should
9875 avoid writing weird assembly. */
9876 if (SYMBOL_CALLS_LOCAL (info, h))
9878 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9880 p->count -= p->pc_count;
9889 if (eh->dyn_relocs != NULL)
9891 /* Make sure this symbol is output as a dynamic symbol. */
9892 if (!ensure_undef_dynamic (info, h))
9896 else if (h->type == STT_GNU_IFUNC)
9898 /* A plt entry is always created when making direct calls to
9899 an ifunc, even when building a static executable, but
9900 that doesn't cover all cases. We may have only an ifunc
9901 initialised function pointer for a given ifunc symbol.
9903 For ELFv2, dynamic relocations are not required when
9904 generating a global entry PLT stub. */
9905 if (abiversion (info->output_bfd) >= 2)
9907 if (global_entry_stub (h))
9908 eh->dyn_relocs = NULL;
9911 /* For ELFv1 we have function descriptors. Descriptors need
9912 to be treated like PLT entries and thus have dynamic
9913 relocations. One exception is when the function
9914 descriptor is copied into .dynbss (which should only
9915 happen with ancient versions of gcc). */
9916 else if (h->needs_copy)
9917 eh->dyn_relocs = NULL;
9919 else if (ELIMINATE_COPY_RELOCS)
9921 /* For the non-pic case, discard space for relocs against
9922 symbols which turn out to need copy relocs or are not
9927 /* Make sure this symbol is output as a dynamic symbol. */
9928 if (!ensure_undef_dynamic (info, h))
9931 if (h->dynindx == -1)
9932 eh->dyn_relocs = NULL;
9935 eh->dyn_relocs = NULL;
9938 /* Finally, allocate space. */
9939 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9941 asection *sreloc = elf_section_data (p->sec)->sreloc;
9942 if (eh->elf.type == STT_GNU_IFUNC)
9943 sreloc = htab->elf.irelplt;
9944 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9948 if ((htab->elf.dynamic_sections_created
9949 && h->dynindx != -1)
9950 || h->type == STT_GNU_IFUNC)
9952 struct plt_entry *pent;
9953 bfd_boolean doneone = FALSE;
9954 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9955 if (pent->plt.refcount > 0)
9957 if (!htab->elf.dynamic_sections_created
9958 || h->dynindx == -1)
9961 pent->plt.offset = s->size;
9962 s->size += PLT_ENTRY_SIZE (htab);
9963 s = htab->elf.irelplt;
9967 /* If this is the first .plt entry, make room for the special
9971 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9973 pent->plt.offset = s->size;
9975 /* Make room for this entry. */
9976 s->size += PLT_ENTRY_SIZE (htab);
9978 /* Make room for the .glink code. */
9981 s->size += GLINK_CALL_STUB_SIZE;
9984 /* We need bigger stubs past index 32767. */
9985 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9992 /* We also need to make an entry in the .rela.plt section. */
9993 s = htab->elf.srelplt;
9995 s->size += sizeof (Elf64_External_Rela);
9999 pent->plt.offset = (bfd_vma) -1;
10002 h->plt.plist = NULL;
10008 h->plt.plist = NULL;
10015 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10016 to set up space for global entry stubs. These are put in glink,
10017 after the branch table. */
10020 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
10022 struct bfd_link_info *info;
10023 struct ppc_link_hash_table *htab;
10024 struct plt_entry *pent;
10027 if (h->root.type == bfd_link_hash_indirect)
10030 if (!h->pointer_equality_needed)
10033 if (h->def_regular)
10037 htab = ppc_hash_table (info);
10042 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10043 if (pent->plt.offset != (bfd_vma) -1
10044 && pent->addend == 0)
10046 /* For ELFv2, if this symbol is not defined in a regular file
10047 and we are not generating a shared library or pie, then we
10048 need to define the symbol in the executable on a call stub.
10049 This is to avoid text relocations. */
10050 s->size = (s->size + 15) & -16;
10051 h->root.type = bfd_link_hash_defined;
10052 h->root.u.def.section = s;
10053 h->root.u.def.value = s->size;
10060 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10061 read-only sections. */
10064 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
10066 if (h->root.type == bfd_link_hash_indirect)
10069 if (readonly_dynrelocs (h))
10071 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
10073 /* Not an error, just cut short the traversal. */
10079 /* Set the sizes of the dynamic sections. */
10082 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
10083 struct bfd_link_info *info)
10085 struct ppc_link_hash_table *htab;
10088 bfd_boolean relocs;
10090 struct got_entry *first_tlsld;
10092 htab = ppc_hash_table (info);
10096 dynobj = htab->elf.dynobj;
10097 if (dynobj == NULL)
10100 if (htab->elf.dynamic_sections_created)
10102 /* Set the contents of the .interp section to the interpreter. */
10103 if (bfd_link_executable (info) && !info->nointerp)
10105 s = bfd_get_linker_section (dynobj, ".interp");
10108 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10109 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10113 /* Set up .got offsets for local syms, and space for local dynamic
10115 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10117 struct got_entry **lgot_ents;
10118 struct got_entry **end_lgot_ents;
10119 struct plt_entry **local_plt;
10120 struct plt_entry **end_local_plt;
10121 unsigned char *lgot_masks;
10122 bfd_size_type locsymcount;
10123 Elf_Internal_Shdr *symtab_hdr;
10125 if (!is_ppc64_elf (ibfd))
10128 for (s = ibfd->sections; s != NULL; s = s->next)
10130 struct ppc_dyn_relocs *p;
10132 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10134 if (!bfd_is_abs_section (p->sec)
10135 && bfd_is_abs_section (p->sec->output_section))
10137 /* Input section has been discarded, either because
10138 it is a copy of a linkonce section or due to
10139 linker script /DISCARD/, so we'll be discarding
10142 else if (p->count != 0)
10144 asection *srel = elf_section_data (p->sec)->sreloc;
10146 srel = htab->elf.irelplt;
10147 srel->size += p->count * sizeof (Elf64_External_Rela);
10148 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10149 info->flags |= DF_TEXTREL;
10154 lgot_ents = elf_local_got_ents (ibfd);
10158 symtab_hdr = &elf_symtab_hdr (ibfd);
10159 locsymcount = symtab_hdr->sh_info;
10160 end_lgot_ents = lgot_ents + locsymcount;
10161 local_plt = (struct plt_entry **) end_lgot_ents;
10162 end_local_plt = local_plt + locsymcount;
10163 lgot_masks = (unsigned char *) end_local_plt;
10164 s = ppc64_elf_tdata (ibfd)->got;
10165 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10167 struct got_entry **pent, *ent;
10170 while ((ent = *pent) != NULL)
10171 if (ent->got.refcount > 0)
10173 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10175 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10180 unsigned int ent_size = 8;
10181 unsigned int rel_size = sizeof (Elf64_External_Rela);
10183 ent->got.offset = s->size;
10184 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10189 s->size += ent_size;
10190 if ((*lgot_masks & PLT_IFUNC) != 0)
10192 htab->elf.irelplt->size += rel_size;
10193 htab->got_reli_size += rel_size;
10195 else if (bfd_link_pic (info))
10197 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10198 srel->size += rel_size;
10207 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10208 for (; local_plt < end_local_plt; ++local_plt)
10210 struct plt_entry *ent;
10212 for (ent = *local_plt; ent != NULL; ent = ent->next)
10213 if (ent->plt.refcount > 0)
10215 s = htab->elf.iplt;
10216 ent->plt.offset = s->size;
10217 s->size += PLT_ENTRY_SIZE (htab);
10219 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10222 ent->plt.offset = (bfd_vma) -1;
10226 /* Allocate global sym .plt and .got entries, and space for global
10227 sym dynamic relocs. */
10228 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10229 /* Stash the end of glink branch table. */
10230 if (htab->glink != NULL)
10231 htab->glink->rawsize = htab->glink->size;
10233 if (!htab->opd_abi && !bfd_link_pic (info))
10234 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10236 first_tlsld = NULL;
10237 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10239 struct got_entry *ent;
10241 if (!is_ppc64_elf (ibfd))
10244 ent = ppc64_tlsld_got (ibfd);
10245 if (ent->got.refcount > 0)
10247 if (!htab->do_multi_toc && first_tlsld != NULL)
10249 ent->is_indirect = TRUE;
10250 ent->got.ent = first_tlsld;
10254 if (first_tlsld == NULL)
10256 s = ppc64_elf_tdata (ibfd)->got;
10257 ent->got.offset = s->size;
10260 if (bfd_link_pic (info))
10262 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10263 srel->size += sizeof (Elf64_External_Rela);
10268 ent->got.offset = (bfd_vma) -1;
10271 /* We now have determined the sizes of the various dynamic sections.
10272 Allocate memory for them. */
10274 for (s = dynobj->sections; s != NULL; s = s->next)
10276 if ((s->flags & SEC_LINKER_CREATED) == 0)
10279 if (s == htab->brlt || s == htab->relbrlt)
10280 /* These haven't been allocated yet; don't strip. */
10282 else if (s == htab->elf.sgot
10283 || s == htab->elf.splt
10284 || s == htab->elf.iplt
10285 || s == htab->glink
10286 || s == htab->elf.sdynbss
10287 || s == htab->elf.sdynrelro)
10289 /* Strip this section if we don't need it; see the
10292 else if (s == htab->glink_eh_frame)
10294 if (!bfd_is_abs_section (s->output_section))
10295 /* Not sized yet. */
10298 else if (CONST_STRNEQ (s->name, ".rela"))
10302 if (s != htab->elf.srelplt)
10305 /* We use the reloc_count field as a counter if we need
10306 to copy relocs into the output file. */
10307 s->reloc_count = 0;
10312 /* It's not one of our sections, so don't allocate space. */
10318 /* If we don't need this section, strip it from the
10319 output file. This is mostly to handle .rela.bss and
10320 .rela.plt. We must create both sections in
10321 create_dynamic_sections, because they must be created
10322 before the linker maps input sections to output
10323 sections. The linker does that before
10324 adjust_dynamic_symbol is called, and it is that
10325 function which decides whether anything needs to go
10326 into these sections. */
10327 s->flags |= SEC_EXCLUDE;
10331 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10334 /* Allocate memory for the section contents. We use bfd_zalloc
10335 here in case unused entries are not reclaimed before the
10336 section's contents are written out. This should not happen,
10337 but this way if it does we get a R_PPC64_NONE reloc in .rela
10338 sections instead of garbage.
10339 We also rely on the section contents being zero when writing
10340 the GOT and .dynrelro. */
10341 s->contents = bfd_zalloc (dynobj, s->size);
10342 if (s->contents == NULL)
10346 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10348 if (!is_ppc64_elf (ibfd))
10351 s = ppc64_elf_tdata (ibfd)->got;
10352 if (s != NULL && s != htab->elf.sgot)
10355 s->flags |= SEC_EXCLUDE;
10358 s->contents = bfd_zalloc (ibfd, s->size);
10359 if (s->contents == NULL)
10363 s = ppc64_elf_tdata (ibfd)->relgot;
10367 s->flags |= SEC_EXCLUDE;
10370 s->contents = bfd_zalloc (ibfd, s->size);
10371 if (s->contents == NULL)
10374 s->reloc_count = 0;
10379 if (htab->elf.dynamic_sections_created)
10381 bfd_boolean tls_opt;
10383 /* Add some entries to the .dynamic section. We fill in the
10384 values later, in ppc64_elf_finish_dynamic_sections, but we
10385 must add the entries now so that we get the correct size for
10386 the .dynamic section. The DT_DEBUG entry is filled in by the
10387 dynamic linker and used by the debugger. */
10388 #define add_dynamic_entry(TAG, VAL) \
10389 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10391 if (bfd_link_executable (info))
10393 if (!add_dynamic_entry (DT_DEBUG, 0))
10397 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10399 if (!add_dynamic_entry (DT_PLTGOT, 0)
10400 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10401 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10402 || !add_dynamic_entry (DT_JMPREL, 0)
10403 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10407 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10409 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10410 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10414 tls_opt = (htab->params->tls_get_addr_opt
10415 && htab->tls_get_addr_fd != NULL
10416 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10417 if (tls_opt || !htab->opd_abi)
10419 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10425 if (!add_dynamic_entry (DT_RELA, 0)
10426 || !add_dynamic_entry (DT_RELASZ, 0)
10427 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10430 /* If any dynamic relocs apply to a read-only section,
10431 then we need a DT_TEXTREL entry. */
10432 if ((info->flags & DF_TEXTREL) == 0)
10433 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10435 if ((info->flags & DF_TEXTREL) != 0)
10437 if (!add_dynamic_entry (DT_TEXTREL, 0))
10442 #undef add_dynamic_entry
10447 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10450 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10452 if (h->plt.plist != NULL
10454 && !h->pointer_equality_needed)
10457 return _bfd_elf_hash_symbol (h);
10460 /* Determine the type of stub needed, if any, for a call. */
10462 static inline enum ppc_stub_type
10463 ppc_type_of_stub (asection *input_sec,
10464 const Elf_Internal_Rela *rel,
10465 struct ppc_link_hash_entry **hash,
10466 struct plt_entry **plt_ent,
10467 bfd_vma destination,
10468 unsigned long local_off)
10470 struct ppc_link_hash_entry *h = *hash;
10472 bfd_vma branch_offset;
10473 bfd_vma max_branch_offset;
10474 enum elf_ppc64_reloc_type r_type;
10478 struct plt_entry *ent;
10479 struct ppc_link_hash_entry *fdh = h;
10481 && h->oh->is_func_descriptor)
10483 fdh = ppc_follow_link (h->oh);
10487 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10488 if (ent->addend == rel->r_addend
10489 && ent->plt.offset != (bfd_vma) -1)
10492 return ppc_stub_plt_call;
10495 /* Here, we know we don't have a plt entry. If we don't have a
10496 either a defined function descriptor or a defined entry symbol
10497 in a regular object file, then it is pointless trying to make
10498 any other type of stub. */
10499 if (!is_static_defined (&fdh->elf)
10500 && !is_static_defined (&h->elf))
10501 return ppc_stub_none;
10503 else if (elf_local_got_ents (input_sec->owner) != NULL)
10505 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10506 struct plt_entry **local_plt = (struct plt_entry **)
10507 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10508 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10510 if (local_plt[r_symndx] != NULL)
10512 struct plt_entry *ent;
10514 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10515 if (ent->addend == rel->r_addend
10516 && ent->plt.offset != (bfd_vma) -1)
10519 return ppc_stub_plt_call;
10524 /* Determine where the call point is. */
10525 location = (input_sec->output_offset
10526 + input_sec->output_section->vma
10529 branch_offset = destination - location;
10530 r_type = ELF64_R_TYPE (rel->r_info);
10532 /* Determine if a long branch stub is needed. */
10533 max_branch_offset = 1 << 25;
10534 if (r_type != R_PPC64_REL24)
10535 max_branch_offset = 1 << 15;
10537 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10538 /* We need a stub. Figure out whether a long_branch or plt_branch
10539 is needed later. */
10540 return ppc_stub_long_branch;
10542 return ppc_stub_none;
10545 /* With power7 weakly ordered memory model, it is possible for ld.so
10546 to update a plt entry in one thread and have another thread see a
10547 stale zero toc entry. To avoid this we need some sort of acquire
10548 barrier in the call stub. One solution is to make the load of the
10549 toc word seem to appear to depend on the load of the function entry
10550 word. Another solution is to test for r2 being zero, and branch to
10551 the appropriate glink entry if so.
10553 . fake dep barrier compare
10554 . ld 12,xxx(2) ld 12,xxx(2)
10555 . mtctr 12 mtctr 12
10556 . xor 11,12,12 ld 2,xxx+8(2)
10557 . add 2,2,11 cmpldi 2,0
10558 . ld 2,xxx+8(2) bnectr+
10559 . bctr b <glink_entry>
10561 The solution involving the compare turns out to be faster, so
10562 that's what we use unless the branch won't reach. */
10564 #define ALWAYS_USE_FAKE_DEP 0
10565 #define ALWAYS_EMIT_R2SAVE 0
10567 #define PPC_LO(v) ((v) & 0xffff)
10568 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10569 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10571 static inline unsigned int
10572 plt_stub_size (struct ppc_link_hash_table *htab,
10573 struct ppc_stub_hash_entry *stub_entry,
10576 unsigned size = 12;
10578 if (ALWAYS_EMIT_R2SAVE
10579 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10581 if (PPC_HA (off) != 0)
10586 if (htab->params->plt_static_chain)
10588 if (htab->params->plt_thread_safe
10589 && htab->elf.dynamic_sections_created
10590 && stub_entry->h != NULL
10591 && stub_entry->h->elf.dynindx != -1)
10593 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10596 if (stub_entry->h != NULL
10597 && (stub_entry->h == htab->tls_get_addr_fd
10598 || stub_entry->h == htab->tls_get_addr)
10599 && htab->params->tls_get_addr_opt)
10602 if (ALWAYS_EMIT_R2SAVE
10603 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10609 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10610 then return the padding needed to do so. */
10611 static inline unsigned int
10612 plt_stub_pad (struct ppc_link_hash_table *htab,
10613 struct ppc_stub_hash_entry *stub_entry,
10616 int stub_align = 1 << htab->params->plt_stub_align;
10617 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10618 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10620 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10621 > ((stub_size - 1) & -stub_align))
10622 return stub_align - (stub_off & (stub_align - 1));
10626 /* Build a .plt call stub. */
10628 static inline bfd_byte *
10629 build_plt_stub (struct ppc_link_hash_table *htab,
10630 struct ppc_stub_hash_entry *stub_entry,
10631 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10633 bfd *obfd = htab->params->stub_bfd;
10634 bfd_boolean plt_load_toc = htab->opd_abi;
10635 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10636 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10637 && htab->elf.dynamic_sections_created
10638 && stub_entry->h != NULL
10639 && stub_entry->h->elf.dynindx != -1);
10640 bfd_boolean use_fake_dep = plt_thread_safe;
10641 bfd_vma cmp_branch_off = 0;
10643 if (!ALWAYS_USE_FAKE_DEP
10646 && !((stub_entry->h == htab->tls_get_addr_fd
10647 || stub_entry->h == htab->tls_get_addr)
10648 && htab->params->tls_get_addr_opt))
10650 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10651 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10652 / PLT_ENTRY_SIZE (htab));
10653 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10656 if (pltindex > 32768)
10657 glinkoff += (pltindex - 32768) * 4;
10659 + htab->glink->output_offset
10660 + htab->glink->output_section->vma);
10661 from = (p - stub_entry->group->stub_sec->contents
10662 + 4 * (ALWAYS_EMIT_R2SAVE
10663 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10664 + 4 * (PPC_HA (offset) != 0)
10665 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10666 != PPC_HA (offset))
10667 + 4 * (plt_static_chain != 0)
10669 + stub_entry->group->stub_sec->output_offset
10670 + stub_entry->group->stub_sec->output_section->vma);
10671 cmp_branch_off = to - from;
10672 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10675 if (PPC_HA (offset) != 0)
10679 if (ALWAYS_EMIT_R2SAVE
10680 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10681 r[0].r_offset += 4;
10682 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10683 r[1].r_offset = r[0].r_offset + 4;
10684 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10685 r[1].r_addend = r[0].r_addend;
10688 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10690 r[2].r_offset = r[1].r_offset + 4;
10691 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10692 r[2].r_addend = r[0].r_addend;
10696 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10697 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10698 r[2].r_addend = r[0].r_addend + 8;
10699 if (plt_static_chain)
10701 r[3].r_offset = r[2].r_offset + 4;
10702 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10703 r[3].r_addend = r[0].r_addend + 16;
10708 if (ALWAYS_EMIT_R2SAVE
10709 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10710 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10713 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10714 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10718 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10719 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10722 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10724 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10727 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10732 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10733 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10735 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10736 if (plt_static_chain)
10737 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10744 if (ALWAYS_EMIT_R2SAVE
10745 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10746 r[0].r_offset += 4;
10747 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10750 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10752 r[1].r_offset = r[0].r_offset + 4;
10753 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10754 r[1].r_addend = r[0].r_addend;
10758 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10759 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10760 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10761 if (plt_static_chain)
10763 r[2].r_offset = r[1].r_offset + 4;
10764 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10765 r[2].r_addend = r[0].r_addend + 8;
10770 if (ALWAYS_EMIT_R2SAVE
10771 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10772 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10773 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10775 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10777 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10780 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10785 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10786 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10788 if (plt_static_chain)
10789 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10790 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10793 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10795 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10796 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10797 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10800 bfd_put_32 (obfd, BCTR, p), p += 4;
10804 /* Build a special .plt call stub for __tls_get_addr. */
10806 #define LD_R11_0R3 0xe9630000
10807 #define LD_R12_0R3 0xe9830000
10808 #define MR_R0_R3 0x7c601b78
10809 #define CMPDI_R11_0 0x2c2b0000
10810 #define ADD_R3_R12_R13 0x7c6c6a14
10811 #define BEQLR 0x4d820020
10812 #define MR_R3_R0 0x7c030378
10813 #define STD_R11_0R1 0xf9610000
10814 #define BCTRL 0x4e800421
10815 #define LD_R11_0R1 0xe9610000
10816 #define MTLR_R11 0x7d6803a6
10818 static inline bfd_byte *
10819 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10820 struct ppc_stub_hash_entry *stub_entry,
10821 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10823 bfd *obfd = htab->params->stub_bfd;
10825 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10826 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10827 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10828 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10829 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10830 bfd_put_32 (obfd, BEQLR, p), p += 4;
10831 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10833 r[0].r_offset += 7 * 4;
10834 if (!ALWAYS_EMIT_R2SAVE
10835 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10836 return build_plt_stub (htab, stub_entry, p, offset, r);
10838 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10839 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10842 r[0].r_offset += 2 * 4;
10843 p = build_plt_stub (htab, stub_entry, p, offset, r);
10844 bfd_put_32 (obfd, BCTRL, p - 4);
10846 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10847 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10848 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10849 bfd_put_32 (obfd, BLR, p), p += 4;
10854 static Elf_Internal_Rela *
10855 get_relocs (asection *sec, int count)
10857 Elf_Internal_Rela *relocs;
10858 struct bfd_elf_section_data *elfsec_data;
10860 elfsec_data = elf_section_data (sec);
10861 relocs = elfsec_data->relocs;
10862 if (relocs == NULL)
10864 bfd_size_type relsize;
10865 relsize = sec->reloc_count * sizeof (*relocs);
10866 relocs = bfd_alloc (sec->owner, relsize);
10867 if (relocs == NULL)
10869 elfsec_data->relocs = relocs;
10870 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10871 sizeof (Elf_Internal_Shdr));
10872 if (elfsec_data->rela.hdr == NULL)
10874 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10875 * sizeof (Elf64_External_Rela));
10876 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10877 sec->reloc_count = 0;
10879 relocs += sec->reloc_count;
10880 sec->reloc_count += count;
10885 get_r2off (struct bfd_link_info *info,
10886 struct ppc_stub_hash_entry *stub_entry)
10888 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10889 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10893 /* Support linking -R objects. Get the toc pointer from the
10896 if (!htab->opd_abi)
10898 asection *opd = stub_entry->h->elf.root.u.def.section;
10899 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10901 if (strcmp (opd->name, ".opd") != 0
10902 || opd->reloc_count != 0)
10904 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10905 stub_entry->h->elf.root.root.string);
10906 bfd_set_error (bfd_error_bad_value);
10907 return (bfd_vma) -1;
10909 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10910 return (bfd_vma) -1;
10911 r2off = bfd_get_64 (opd->owner, buf);
10912 r2off -= elf_gp (info->output_bfd);
10914 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10919 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10921 struct ppc_stub_hash_entry *stub_entry;
10922 struct ppc_branch_hash_entry *br_entry;
10923 struct bfd_link_info *info;
10924 struct ppc_link_hash_table *htab;
10929 Elf_Internal_Rela *r;
10932 /* Massage our args to the form they really have. */
10933 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10936 htab = ppc_hash_table (info);
10940 /* Make a note of the offset within the stubs for this entry. */
10941 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10942 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10944 htab->stub_count[stub_entry->stub_type - 1] += 1;
10945 switch (stub_entry->stub_type)
10947 case ppc_stub_long_branch:
10948 case ppc_stub_long_branch_r2off:
10949 /* Branches are relative. This is where we are going to. */
10950 dest = (stub_entry->target_value
10951 + stub_entry->target_section->output_offset
10952 + stub_entry->target_section->output_section->vma);
10953 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10956 /* And this is where we are coming from. */
10957 off -= (stub_entry->stub_offset
10958 + stub_entry->group->stub_sec->output_offset
10959 + stub_entry->group->stub_sec->output_section->vma);
10962 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10964 bfd_vma r2off = get_r2off (info, stub_entry);
10966 if (r2off == (bfd_vma) -1)
10968 htab->stub_error = TRUE;
10971 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10974 if (PPC_HA (r2off) != 0)
10976 bfd_put_32 (htab->params->stub_bfd,
10977 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10981 if (PPC_LO (r2off) != 0)
10983 bfd_put_32 (htab->params->stub_bfd,
10984 ADDI_R2_R2 | PPC_LO (r2off), loc);
10990 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10992 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10994 info->callbacks->einfo
10995 (_("%P: long branch stub `%s' offset overflow\n"),
10996 stub_entry->root.string);
10997 htab->stub_error = TRUE;
11001 if (info->emitrelocations)
11003 r = get_relocs (stub_entry->group->stub_sec, 1);
11006 r->r_offset = loc - stub_entry->group->stub_sec->contents;
11007 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
11008 r->r_addend = dest;
11009 if (stub_entry->h != NULL)
11011 struct elf_link_hash_entry **hashes;
11012 unsigned long symndx;
11013 struct ppc_link_hash_entry *h;
11015 hashes = elf_sym_hashes (htab->params->stub_bfd);
11016 if (hashes == NULL)
11018 bfd_size_type hsize;
11020 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
11021 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
11022 if (hashes == NULL)
11024 elf_sym_hashes (htab->params->stub_bfd) = hashes;
11025 htab->stub_globals = 1;
11027 symndx = htab->stub_globals++;
11029 hashes[symndx] = &h->elf;
11030 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
11031 if (h->oh != NULL && h->oh->is_func)
11032 h = ppc_follow_link (h->oh);
11033 if (h->elf.root.u.def.section != stub_entry->target_section)
11034 /* H is an opd symbol. The addend must be zero. */
11038 off = (h->elf.root.u.def.value
11039 + h->elf.root.u.def.section->output_offset
11040 + h->elf.root.u.def.section->output_section->vma);
11041 r->r_addend -= off;
11047 case ppc_stub_plt_branch:
11048 case ppc_stub_plt_branch_r2off:
11049 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11050 stub_entry->root.string + 9,
11052 if (br_entry == NULL)
11054 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
11055 stub_entry->root.string);
11056 htab->stub_error = TRUE;
11060 dest = (stub_entry->target_value
11061 + stub_entry->target_section->output_offset
11062 + stub_entry->target_section->output_section->vma);
11063 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11064 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11066 bfd_put_64 (htab->brlt->owner, dest,
11067 htab->brlt->contents + br_entry->offset);
11069 if (br_entry->iter == htab->stub_iteration)
11071 br_entry->iter = 0;
11073 if (htab->relbrlt != NULL)
11075 /* Create a reloc for the branch lookup table entry. */
11076 Elf_Internal_Rela rela;
11079 rela.r_offset = (br_entry->offset
11080 + htab->brlt->output_offset
11081 + htab->brlt->output_section->vma);
11082 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11083 rela.r_addend = dest;
11085 rl = htab->relbrlt->contents;
11086 rl += (htab->relbrlt->reloc_count++
11087 * sizeof (Elf64_External_Rela));
11088 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
11090 else if (info->emitrelocations)
11092 r = get_relocs (htab->brlt, 1);
11095 /* brlt, being SEC_LINKER_CREATED does not go through the
11096 normal reloc processing. Symbols and offsets are not
11097 translated from input file to output file form, so
11098 set up the offset per the output file. */
11099 r->r_offset = (br_entry->offset
11100 + htab->brlt->output_offset
11101 + htab->brlt->output_section->vma);
11102 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11103 r->r_addend = dest;
11107 dest = (br_entry->offset
11108 + htab->brlt->output_offset
11109 + htab->brlt->output_section->vma);
11112 - elf_gp (htab->brlt->output_section->owner)
11113 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11115 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11117 info->callbacks->einfo
11118 (_("%P: linkage table error against `%T'\n"),
11119 stub_entry->root.string);
11120 bfd_set_error (bfd_error_bad_value);
11121 htab->stub_error = TRUE;
11125 if (info->emitrelocations)
11127 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11130 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11131 if (bfd_big_endian (info->output_bfd))
11132 r[0].r_offset += 2;
11133 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11134 r[0].r_offset += 4;
11135 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11136 r[0].r_addend = dest;
11137 if (PPC_HA (off) != 0)
11139 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11140 r[1].r_offset = r[0].r_offset + 4;
11141 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11142 r[1].r_addend = r[0].r_addend;
11146 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11148 if (PPC_HA (off) != 0)
11151 bfd_put_32 (htab->params->stub_bfd,
11152 ADDIS_R12_R2 | PPC_HA (off), loc);
11154 bfd_put_32 (htab->params->stub_bfd,
11155 LD_R12_0R12 | PPC_LO (off), loc);
11160 bfd_put_32 (htab->params->stub_bfd,
11161 LD_R12_0R2 | PPC_LO (off), loc);
11166 bfd_vma r2off = get_r2off (info, stub_entry);
11168 if (r2off == (bfd_vma) -1)
11170 htab->stub_error = TRUE;
11174 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11177 if (PPC_HA (off) != 0)
11180 bfd_put_32 (htab->params->stub_bfd,
11181 ADDIS_R12_R2 | PPC_HA (off), loc);
11183 bfd_put_32 (htab->params->stub_bfd,
11184 LD_R12_0R12 | PPC_LO (off), loc);
11187 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11189 if (PPC_HA (r2off) != 0)
11193 bfd_put_32 (htab->params->stub_bfd,
11194 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11196 if (PPC_LO (r2off) != 0)
11200 bfd_put_32 (htab->params->stub_bfd,
11201 ADDI_R2_R2 | PPC_LO (r2off), loc);
11205 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11207 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11210 case ppc_stub_plt_call:
11211 case ppc_stub_plt_call_r2save:
11212 if (stub_entry->h != NULL
11213 && stub_entry->h->is_func_descriptor
11214 && stub_entry->h->oh != NULL)
11216 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11218 /* If the old-ABI "dot-symbol" is undefined make it weak so
11219 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11220 if (fh->elf.root.type == bfd_link_hash_undefined
11221 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11222 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11223 fh->elf.root.type = bfd_link_hash_undefweak;
11226 /* Now build the stub. */
11227 dest = stub_entry->plt_ent->plt.offset & ~1;
11228 if (dest >= (bfd_vma) -2)
11231 plt = htab->elf.splt;
11232 if (!htab->elf.dynamic_sections_created
11233 || stub_entry->h == NULL
11234 || stub_entry->h->elf.dynindx == -1)
11235 plt = htab->elf.iplt;
11237 dest += plt->output_offset + plt->output_section->vma;
11239 if (stub_entry->h == NULL
11240 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11242 Elf_Internal_Rela rela;
11245 rela.r_offset = dest;
11247 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11249 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11250 rela.r_addend = (stub_entry->target_value
11251 + stub_entry->target_section->output_offset
11252 + stub_entry->target_section->output_section->vma);
11254 rl = (htab->elf.irelplt->contents
11255 + (htab->elf.irelplt->reloc_count++
11256 * sizeof (Elf64_External_Rela)));
11257 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11258 stub_entry->plt_ent->plt.offset |= 1;
11259 htab->local_ifunc_resolver = 1;
11263 - elf_gp (plt->output_section->owner)
11264 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11266 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11268 info->callbacks->einfo
11269 /* xgettext:c-format */
11270 (_("%P: linkage table error against `%T'\n"),
11271 stub_entry->h != NULL
11272 ? stub_entry->h->elf.root.root.string
11274 bfd_set_error (bfd_error_bad_value);
11275 htab->stub_error = TRUE;
11279 if (htab->params->plt_stub_align != 0)
11281 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11283 stub_entry->group->stub_sec->size += pad;
11284 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11289 if (info->emitrelocations)
11291 r = get_relocs (stub_entry->group->stub_sec,
11292 ((PPC_HA (off) != 0)
11294 ? 2 + (htab->params->plt_static_chain
11295 && PPC_HA (off + 16) == PPC_HA (off))
11299 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11300 if (bfd_big_endian (info->output_bfd))
11301 r[0].r_offset += 2;
11302 r[0].r_addend = dest;
11304 if (stub_entry->h != NULL
11305 && (stub_entry->h == htab->tls_get_addr_fd
11306 || stub_entry->h == htab->tls_get_addr)
11307 && htab->params->tls_get_addr_opt)
11308 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11310 p = build_plt_stub (htab, stub_entry, loc, off, r);
11314 case ppc_stub_save_res:
11322 stub_entry->group->stub_sec->size += size;
11324 if (htab->params->emit_stub_syms)
11326 struct elf_link_hash_entry *h;
11329 const char *const stub_str[] = { "long_branch",
11330 "long_branch_r2off",
11332 "plt_branch_r2off",
11336 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11337 len2 = strlen (stub_entry->root.string);
11338 name = bfd_malloc (len1 + len2 + 2);
11341 memcpy (name, stub_entry->root.string, 9);
11342 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11343 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11344 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11347 if (h->root.type == bfd_link_hash_new)
11349 h->root.type = bfd_link_hash_defined;
11350 h->root.u.def.section = stub_entry->group->stub_sec;
11351 h->root.u.def.value = stub_entry->stub_offset;
11352 h->ref_regular = 1;
11353 h->def_regular = 1;
11354 h->ref_regular_nonweak = 1;
11355 h->forced_local = 1;
11357 h->root.linker_def = 1;
11364 /* As above, but don't actually build the stub. Just bump offset so
11365 we know stub section sizes, and select plt_branch stubs where
11366 long_branch stubs won't do. */
11369 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11371 struct ppc_stub_hash_entry *stub_entry;
11372 struct bfd_link_info *info;
11373 struct ppc_link_hash_table *htab;
11377 /* Massage our args to the form they really have. */
11378 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11381 htab = ppc_hash_table (info);
11385 if (stub_entry->h != NULL
11386 && stub_entry->h->save_res
11387 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11388 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11390 /* Don't make stubs to out-of-line register save/restore
11391 functions. Instead, emit copies of the functions. */
11392 stub_entry->group->needs_save_res = 1;
11393 stub_entry->stub_type = ppc_stub_save_res;
11397 if (stub_entry->stub_type == ppc_stub_plt_call
11398 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11401 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11402 if (off >= (bfd_vma) -2)
11404 plt = htab->elf.splt;
11405 if (!htab->elf.dynamic_sections_created
11406 || stub_entry->h == NULL
11407 || stub_entry->h->elf.dynindx == -1)
11408 plt = htab->elf.iplt;
11409 off += (plt->output_offset
11410 + plt->output_section->vma
11411 - elf_gp (plt->output_section->owner)
11412 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11414 size = plt_stub_size (htab, stub_entry, off);
11415 if (stub_entry->h != NULL
11416 && (stub_entry->h == htab->tls_get_addr_fd
11417 || stub_entry->h == htab->tls_get_addr)
11418 && htab->params->tls_get_addr_opt
11419 && (ALWAYS_EMIT_R2SAVE
11420 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11421 stub_entry->group->tls_get_addr_opt_bctrl
11422 = stub_entry->group->stub_sec->size + size - 5 * 4;
11424 if (htab->params->plt_stub_align)
11425 size += plt_stub_pad (htab, stub_entry, off);
11426 if (info->emitrelocations)
11428 stub_entry->group->stub_sec->reloc_count
11429 += ((PPC_HA (off) != 0)
11431 ? 2 + (htab->params->plt_static_chain
11432 && PPC_HA (off + 16) == PPC_HA (off))
11434 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11439 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11442 bfd_vma local_off = 0;
11444 off = (stub_entry->target_value
11445 + stub_entry->target_section->output_offset
11446 + stub_entry->target_section->output_section->vma);
11447 off -= (stub_entry->group->stub_sec->size
11448 + stub_entry->group->stub_sec->output_offset
11449 + stub_entry->group->stub_sec->output_section->vma);
11451 /* Reset the stub type from the plt variant in case we now
11452 can reach with a shorter stub. */
11453 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11454 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11457 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11459 r2off = get_r2off (info, stub_entry);
11460 if (r2off == (bfd_vma) -1)
11462 htab->stub_error = TRUE;
11466 if (PPC_HA (r2off) != 0)
11468 if (PPC_LO (r2off) != 0)
11473 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11475 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11476 Do the same for -R objects without function descriptors. */
11477 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11478 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11480 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11482 struct ppc_branch_hash_entry *br_entry;
11484 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11485 stub_entry->root.string + 9,
11487 if (br_entry == NULL)
11489 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11490 stub_entry->root.string);
11491 htab->stub_error = TRUE;
11495 if (br_entry->iter != htab->stub_iteration)
11497 br_entry->iter = htab->stub_iteration;
11498 br_entry->offset = htab->brlt->size;
11499 htab->brlt->size += 8;
11501 if (htab->relbrlt != NULL)
11502 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11503 else if (info->emitrelocations)
11505 htab->brlt->reloc_count += 1;
11506 htab->brlt->flags |= SEC_RELOC;
11510 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11511 off = (br_entry->offset
11512 + htab->brlt->output_offset
11513 + htab->brlt->output_section->vma
11514 - elf_gp (htab->brlt->output_section->owner)
11515 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11517 if (info->emitrelocations)
11519 stub_entry->group->stub_sec->reloc_count
11520 += 1 + (PPC_HA (off) != 0);
11521 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11524 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11527 if (PPC_HA (off) != 0)
11533 if (PPC_HA (off) != 0)
11536 if (PPC_HA (r2off) != 0)
11538 if (PPC_LO (r2off) != 0)
11542 else if (info->emitrelocations)
11544 stub_entry->group->stub_sec->reloc_count += 1;
11545 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11549 stub_entry->group->stub_sec->size += size;
11553 /* Set up various things so that we can make a list of input sections
11554 for each output section included in the link. Returns -1 on error,
11555 0 when no stubs will be needed, and 1 on success. */
11558 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11562 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11567 htab->sec_info_arr_size = bfd_get_next_section_id ();
11568 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11569 htab->sec_info = bfd_zmalloc (amt);
11570 if (htab->sec_info == NULL)
11573 /* Set toc_off for com, und, abs and ind sections. */
11574 for (id = 0; id < 3; id++)
11575 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11580 /* Set up for first pass at multitoc partitioning. */
11583 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11585 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11587 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11588 htab->toc_bfd = NULL;
11589 htab->toc_first_sec = NULL;
11592 /* The linker repeatedly calls this function for each TOC input section
11593 and linker generated GOT section. Group input bfds such that the toc
11594 within a group is less than 64k in size. */
11597 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11599 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11600 bfd_vma addr, off, limit;
11605 if (!htab->second_toc_pass)
11607 /* Keep track of the first .toc or .got section for this input bfd. */
11608 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11612 htab->toc_bfd = isec->owner;
11613 htab->toc_first_sec = isec;
11616 addr = isec->output_offset + isec->output_section->vma;
11617 off = addr - htab->toc_curr;
11618 limit = 0x80008000;
11619 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11621 if (off + isec->size > limit)
11623 addr = (htab->toc_first_sec->output_offset
11624 + htab->toc_first_sec->output_section->vma);
11625 htab->toc_curr = addr;
11626 htab->toc_curr &= -TOC_BASE_ALIGN;
11629 /* toc_curr is the base address of this toc group. Set elf_gp
11630 for the input section to be the offset relative to the
11631 output toc base plus 0x8000. Making the input elf_gp an
11632 offset allows us to move the toc as a whole without
11633 recalculating input elf_gp. */
11634 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11635 off += TOC_BASE_OFF;
11637 /* Die if someone uses a linker script that doesn't keep input
11638 file .toc and .got together. */
11640 && elf_gp (isec->owner) != 0
11641 && elf_gp (isec->owner) != off)
11644 elf_gp (isec->owner) = off;
11648 /* During the second pass toc_first_sec points to the start of
11649 a toc group, and toc_curr is used to track the old elf_gp.
11650 We use toc_bfd to ensure we only look at each bfd once. */
11651 if (htab->toc_bfd == isec->owner)
11653 htab->toc_bfd = isec->owner;
11655 if (htab->toc_first_sec == NULL
11656 || htab->toc_curr != elf_gp (isec->owner))
11658 htab->toc_curr = elf_gp (isec->owner);
11659 htab->toc_first_sec = isec;
11661 addr = (htab->toc_first_sec->output_offset
11662 + htab->toc_first_sec->output_section->vma);
11663 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11664 elf_gp (isec->owner) = off;
11669 /* Called via elf_link_hash_traverse to merge GOT entries for global
11673 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11675 if (h->root.type == bfd_link_hash_indirect)
11678 merge_got_entries (&h->got.glist);
11683 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11687 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11689 struct got_entry *gent;
11691 if (h->root.type == bfd_link_hash_indirect)
11694 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11695 if (!gent->is_indirect)
11696 allocate_got (h, (struct bfd_link_info *) inf, gent);
11700 /* Called on the first multitoc pass after the last call to
11701 ppc64_elf_next_toc_section. This function removes duplicate GOT
11705 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11707 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11708 struct bfd *ibfd, *ibfd2;
11709 bfd_boolean done_something;
11711 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11713 if (!htab->do_multi_toc)
11716 /* Merge global sym got entries within a toc group. */
11717 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11719 /* And tlsld_got. */
11720 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11722 struct got_entry *ent, *ent2;
11724 if (!is_ppc64_elf (ibfd))
11727 ent = ppc64_tlsld_got (ibfd);
11728 if (!ent->is_indirect
11729 && ent->got.offset != (bfd_vma) -1)
11731 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11733 if (!is_ppc64_elf (ibfd2))
11736 ent2 = ppc64_tlsld_got (ibfd2);
11737 if (!ent2->is_indirect
11738 && ent2->got.offset != (bfd_vma) -1
11739 && elf_gp (ibfd2) == elf_gp (ibfd))
11741 ent2->is_indirect = TRUE;
11742 ent2->got.ent = ent;
11748 /* Zap sizes of got sections. */
11749 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11750 htab->elf.irelplt->size -= htab->got_reli_size;
11751 htab->got_reli_size = 0;
11753 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11755 asection *got, *relgot;
11757 if (!is_ppc64_elf (ibfd))
11760 got = ppc64_elf_tdata (ibfd)->got;
11763 got->rawsize = got->size;
11765 relgot = ppc64_elf_tdata (ibfd)->relgot;
11766 relgot->rawsize = relgot->size;
11771 /* Now reallocate the got, local syms first. We don't need to
11772 allocate section contents again since we never increase size. */
11773 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11775 struct got_entry **lgot_ents;
11776 struct got_entry **end_lgot_ents;
11777 struct plt_entry **local_plt;
11778 struct plt_entry **end_local_plt;
11779 unsigned char *lgot_masks;
11780 bfd_size_type locsymcount;
11781 Elf_Internal_Shdr *symtab_hdr;
11784 if (!is_ppc64_elf (ibfd))
11787 lgot_ents = elf_local_got_ents (ibfd);
11791 symtab_hdr = &elf_symtab_hdr (ibfd);
11792 locsymcount = symtab_hdr->sh_info;
11793 end_lgot_ents = lgot_ents + locsymcount;
11794 local_plt = (struct plt_entry **) end_lgot_ents;
11795 end_local_plt = local_plt + locsymcount;
11796 lgot_masks = (unsigned char *) end_local_plt;
11797 s = ppc64_elf_tdata (ibfd)->got;
11798 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11800 struct got_entry *ent;
11802 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11804 unsigned int ent_size = 8;
11805 unsigned int rel_size = sizeof (Elf64_External_Rela);
11807 ent->got.offset = s->size;
11808 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11813 s->size += ent_size;
11814 if ((*lgot_masks & PLT_IFUNC) != 0)
11816 htab->elf.irelplt->size += rel_size;
11817 htab->got_reli_size += rel_size;
11819 else if (bfd_link_pic (info))
11821 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11822 srel->size += rel_size;
11828 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11830 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11832 struct got_entry *ent;
11834 if (!is_ppc64_elf (ibfd))
11837 ent = ppc64_tlsld_got (ibfd);
11838 if (!ent->is_indirect
11839 && ent->got.offset != (bfd_vma) -1)
11841 asection *s = ppc64_elf_tdata (ibfd)->got;
11842 ent->got.offset = s->size;
11844 if (bfd_link_pic (info))
11846 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11847 srel->size += sizeof (Elf64_External_Rela);
11852 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11853 if (!done_something)
11854 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11858 if (!is_ppc64_elf (ibfd))
11861 got = ppc64_elf_tdata (ibfd)->got;
11864 done_something = got->rawsize != got->size;
11865 if (done_something)
11870 if (done_something)
11871 (*htab->params->layout_sections_again) ();
11873 /* Set up for second pass over toc sections to recalculate elf_gp
11874 on input sections. */
11875 htab->toc_bfd = NULL;
11876 htab->toc_first_sec = NULL;
11877 htab->second_toc_pass = TRUE;
11878 return done_something;
11881 /* Called after second pass of multitoc partitioning. */
11884 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11886 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11888 /* After the second pass, toc_curr tracks the TOC offset used
11889 for code sections below in ppc64_elf_next_input_section. */
11890 htab->toc_curr = TOC_BASE_OFF;
11893 /* No toc references were found in ISEC. If the code in ISEC makes no
11894 calls, then there's no need to use toc adjusting stubs when branching
11895 into ISEC. Actually, indirect calls from ISEC are OK as they will
11896 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11897 needed, and 2 if a cyclical call-graph was found but no other reason
11898 for a stub was detected. If called from the top level, a return of
11899 2 means the same as a return of 0. */
11902 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11906 /* Mark this section as checked. */
11907 isec->call_check_done = 1;
11909 /* We know none of our code bearing sections will need toc stubs. */
11910 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11913 if (isec->size == 0)
11916 if (isec->output_section == NULL)
11920 if (isec->reloc_count != 0)
11922 Elf_Internal_Rela *relstart, *rel;
11923 Elf_Internal_Sym *local_syms;
11924 struct ppc_link_hash_table *htab;
11926 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11927 info->keep_memory);
11928 if (relstart == NULL)
11931 /* Look for branches to outside of this section. */
11933 htab = ppc_hash_table (info);
11937 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11939 enum elf_ppc64_reloc_type r_type;
11940 unsigned long r_symndx;
11941 struct elf_link_hash_entry *h;
11942 struct ppc_link_hash_entry *eh;
11943 Elf_Internal_Sym *sym;
11945 struct _opd_sec_data *opd;
11949 r_type = ELF64_R_TYPE (rel->r_info);
11950 if (r_type != R_PPC64_REL24
11951 && r_type != R_PPC64_REL14
11952 && r_type != R_PPC64_REL14_BRTAKEN
11953 && r_type != R_PPC64_REL14_BRNTAKEN)
11956 r_symndx = ELF64_R_SYM (rel->r_info);
11957 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11964 /* Calls to dynamic lib functions go through a plt call stub
11966 eh = (struct ppc_link_hash_entry *) h;
11968 && (eh->elf.plt.plist != NULL
11970 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11976 if (sym_sec == NULL)
11977 /* Ignore other undefined symbols. */
11980 /* Assume branches to other sections not included in the
11981 link need stubs too, to cover -R and absolute syms. */
11982 if (sym_sec->output_section == NULL)
11989 sym_value = sym->st_value;
11992 if (h->root.type != bfd_link_hash_defined
11993 && h->root.type != bfd_link_hash_defweak)
11995 sym_value = h->root.u.def.value;
11997 sym_value += rel->r_addend;
11999 /* If this branch reloc uses an opd sym, find the code section. */
12000 opd = get_opd_info (sym_sec);
12003 if (h == NULL && opd->adjust != NULL)
12007 adjust = opd->adjust[OPD_NDX (sym_value)];
12009 /* Assume deleted functions won't ever be called. */
12011 sym_value += adjust;
12014 dest = opd_entry_value (sym_sec, sym_value,
12015 &sym_sec, NULL, FALSE);
12016 if (dest == (bfd_vma) -1)
12021 + sym_sec->output_offset
12022 + sym_sec->output_section->vma);
12024 /* Ignore branch to self. */
12025 if (sym_sec == isec)
12028 /* If the called function uses the toc, we need a stub. */
12029 if (sym_sec->has_toc_reloc
12030 || sym_sec->makes_toc_func_call)
12036 /* Assume any branch that needs a long branch stub might in fact
12037 need a plt_branch stub. A plt_branch stub uses r2. */
12038 else if (dest - (isec->output_offset
12039 + isec->output_section->vma
12040 + rel->r_offset) + (1 << 25)
12041 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12049 /* If calling back to a section in the process of being
12050 tested, we can't say for sure that no toc adjusting stubs
12051 are needed, so don't return zero. */
12052 else if (sym_sec->call_check_in_progress)
12055 /* Branches to another section that itself doesn't have any TOC
12056 references are OK. Recursively call ourselves to check. */
12057 else if (!sym_sec->call_check_done)
12061 /* Mark current section as indeterminate, so that other
12062 sections that call back to current won't be marked as
12064 isec->call_check_in_progress = 1;
12065 recur = toc_adjusting_stub_needed (info, sym_sec);
12066 isec->call_check_in_progress = 0;
12077 if (local_syms != NULL
12078 && (elf_symtab_hdr (isec->owner).contents
12079 != (unsigned char *) local_syms))
12081 if (elf_section_data (isec)->relocs != relstart)
12086 && isec->map_head.s != NULL
12087 && (strcmp (isec->output_section->name, ".init") == 0
12088 || strcmp (isec->output_section->name, ".fini") == 0))
12090 if (isec->map_head.s->has_toc_reloc
12091 || isec->map_head.s->makes_toc_func_call)
12093 else if (!isec->map_head.s->call_check_done)
12096 isec->call_check_in_progress = 1;
12097 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
12098 isec->call_check_in_progress = 0;
12105 isec->makes_toc_func_call = 1;
12110 /* The linker repeatedly calls this function for each input section,
12111 in the order that input sections are linked into output sections.
12112 Build lists of input sections to determine groupings between which
12113 we may insert linker stubs. */
12116 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
12118 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12123 if ((isec->output_section->flags & SEC_CODE) != 0
12124 && isec->output_section->id < htab->sec_info_arr_size)
12126 /* This happens to make the list in reverse order,
12127 which is what we want. */
12128 htab->sec_info[isec->id].u.list
12129 = htab->sec_info[isec->output_section->id].u.list;
12130 htab->sec_info[isec->output_section->id].u.list = isec;
12133 if (htab->multi_toc_needed)
12135 /* Analyse sections that aren't already flagged as needing a
12136 valid toc pointer. Exclude .fixup for the linux kernel.
12137 .fixup contains branches, but only back to the function that
12138 hit an exception. */
12139 if (!(isec->has_toc_reloc
12140 || (isec->flags & SEC_CODE) == 0
12141 || strcmp (isec->name, ".fixup") == 0
12142 || isec->call_check_done))
12144 if (toc_adjusting_stub_needed (info, isec) < 0)
12147 /* Make all sections use the TOC assigned for this object file.
12148 This will be wrong for pasted sections; We fix that in
12149 check_pasted_section(). */
12150 if (elf_gp (isec->owner) != 0)
12151 htab->toc_curr = elf_gp (isec->owner);
12154 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12158 /* Check that all .init and .fini sections use the same toc, if they
12159 have toc relocs. */
12162 check_pasted_section (struct bfd_link_info *info, const char *name)
12164 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12168 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12169 bfd_vma toc_off = 0;
12172 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12173 if (i->has_toc_reloc)
12176 toc_off = htab->sec_info[i->id].toc_off;
12177 else if (toc_off != htab->sec_info[i->id].toc_off)
12182 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12183 if (i->makes_toc_func_call)
12185 toc_off = htab->sec_info[i->id].toc_off;
12189 /* Make sure the whole pasted function uses the same toc offset. */
12191 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12192 htab->sec_info[i->id].toc_off = toc_off;
12198 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12200 return (check_pasted_section (info, ".init")
12201 & check_pasted_section (info, ".fini"));
12204 /* See whether we can group stub sections together. Grouping stub
12205 sections may result in fewer stubs. More importantly, we need to
12206 put all .init* and .fini* stubs at the beginning of the .init or
12207 .fini output sections respectively, because glibc splits the
12208 _init and _fini functions into multiple parts. Putting a stub in
12209 the middle of a function is not a good idea. */
12212 group_sections (struct bfd_link_info *info,
12213 bfd_size_type stub_group_size,
12214 bfd_boolean stubs_always_before_branch)
12216 struct ppc_link_hash_table *htab;
12218 bfd_boolean suppress_size_errors;
12220 htab = ppc_hash_table (info);
12224 suppress_size_errors = FALSE;
12225 if (stub_group_size == 1)
12227 /* Default values. */
12228 if (stubs_always_before_branch)
12229 stub_group_size = 0x1e00000;
12231 stub_group_size = 0x1c00000;
12232 suppress_size_errors = TRUE;
12235 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12239 if (osec->id >= htab->sec_info_arr_size)
12242 tail = htab->sec_info[osec->id].u.list;
12243 while (tail != NULL)
12247 bfd_size_type total;
12248 bfd_boolean big_sec;
12250 struct map_stub *group;
12251 bfd_size_type group_size;
12254 total = tail->size;
12255 group_size = (ppc64_elf_section_data (tail) != NULL
12256 && ppc64_elf_section_data (tail)->has_14bit_branch
12257 ? stub_group_size >> 10 : stub_group_size);
12259 big_sec = total > group_size;
12260 if (big_sec && !suppress_size_errors)
12261 /* xgettext:c-format */
12262 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12263 tail->owner, tail);
12264 curr_toc = htab->sec_info[tail->id].toc_off;
12266 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12267 && ((total += curr->output_offset - prev->output_offset)
12268 < (ppc64_elf_section_data (prev) != NULL
12269 && ppc64_elf_section_data (prev)->has_14bit_branch
12270 ? (group_size = stub_group_size >> 10) : group_size))
12271 && htab->sec_info[prev->id].toc_off == curr_toc)
12274 /* OK, the size from the start of CURR to the end is less
12275 than group_size and thus can be handled by one stub
12276 section. (or the tail section is itself larger than
12277 group_size, in which case we may be toast.) We should
12278 really be keeping track of the total size of stubs added
12279 here, as stubs contribute to the final output section
12280 size. That's a little tricky, and this way will only
12281 break if stubs added make the total size more than 2^25,
12282 ie. for the default stub_group_size, if stubs total more
12283 than 2097152 bytes, or nearly 75000 plt call stubs. */
12284 group = bfd_alloc (curr->owner, sizeof (*group));
12287 group->link_sec = curr;
12288 group->stub_sec = NULL;
12289 group->needs_save_res = 0;
12290 group->tls_get_addr_opt_bctrl = -1u;
12291 group->next = htab->group;
12292 htab->group = group;
12295 prev = htab->sec_info[tail->id].u.list;
12296 /* Set up this stub group. */
12297 htab->sec_info[tail->id].u.group = group;
12299 while (tail != curr && (tail = prev) != NULL);
12301 /* But wait, there's more! Input sections up to group_size
12302 bytes before the stub section can be handled by it too.
12303 Don't do this if we have a really large section after the
12304 stubs, as adding more stubs increases the chance that
12305 branches may not reach into the stub section. */
12306 if (!stubs_always_before_branch && !big_sec)
12309 while (prev != NULL
12310 && ((total += tail->output_offset - prev->output_offset)
12311 < (ppc64_elf_section_data (prev) != NULL
12312 && ppc64_elf_section_data (prev)->has_14bit_branch
12313 ? (group_size = stub_group_size >> 10) : group_size))
12314 && htab->sec_info[prev->id].toc_off == curr_toc)
12317 prev = htab->sec_info[tail->id].u.list;
12318 htab->sec_info[tail->id].u.group = group;
12327 static const unsigned char glink_eh_frame_cie[] =
12329 0, 0, 0, 16, /* length. */
12330 0, 0, 0, 0, /* id. */
12331 1, /* CIE version. */
12332 'z', 'R', 0, /* Augmentation string. */
12333 4, /* Code alignment. */
12334 0x78, /* Data alignment. */
12336 1, /* Augmentation size. */
12337 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12338 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12342 stub_eh_frame_size (struct map_stub *group, size_t align)
12344 size_t this_size = 17;
12345 if (group->tls_get_addr_opt_bctrl != -1u)
12347 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12350 else if (to_bctrl < 256)
12352 else if (to_bctrl < 65536)
12358 this_size = (this_size + align - 1) & -align;
12362 /* Stripping output sections is normally done before dynamic section
12363 symbols have been allocated. This function is called later, and
12364 handles cases like htab->brlt which is mapped to its own output
12368 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12370 if (isec->size == 0
12371 && isec->output_section->size == 0
12372 && !(isec->output_section->flags & SEC_KEEP)
12373 && !bfd_section_removed_from_list (info->output_bfd,
12374 isec->output_section)
12375 && elf_section_data (isec->output_section)->dynindx == 0)
12377 isec->output_section->flags |= SEC_EXCLUDE;
12378 bfd_section_list_remove (info->output_bfd, isec->output_section);
12379 info->output_bfd->section_count--;
12383 /* Determine and set the size of the stub section for a final link.
12385 The basic idea here is to examine all the relocations looking for
12386 PC-relative calls to a target that is unreachable with a "bl"
12390 ppc64_elf_size_stubs (struct bfd_link_info *info)
12392 bfd_size_type stub_group_size;
12393 bfd_boolean stubs_always_before_branch;
12394 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12399 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12400 htab->params->plt_thread_safe = 1;
12401 if (!htab->opd_abi)
12402 htab->params->plt_thread_safe = 0;
12403 else if (htab->params->plt_thread_safe == -1)
12405 static const char *const thread_starter[] =
12409 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12411 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12412 "mq_notify", "create_timer",
12417 "GOMP_parallel_start",
12418 "GOMP_parallel_loop_static",
12419 "GOMP_parallel_loop_static_start",
12420 "GOMP_parallel_loop_dynamic",
12421 "GOMP_parallel_loop_dynamic_start",
12422 "GOMP_parallel_loop_guided",
12423 "GOMP_parallel_loop_guided_start",
12424 "GOMP_parallel_loop_runtime",
12425 "GOMP_parallel_loop_runtime_start",
12426 "GOMP_parallel_sections",
12427 "GOMP_parallel_sections_start",
12433 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12435 struct elf_link_hash_entry *h;
12436 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12437 FALSE, FALSE, TRUE);
12438 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12439 if (htab->params->plt_thread_safe)
12443 stubs_always_before_branch = htab->params->group_size < 0;
12444 if (htab->params->group_size < 0)
12445 stub_group_size = -htab->params->group_size;
12447 stub_group_size = htab->params->group_size;
12449 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12452 #define STUB_SHRINK_ITER 20
12453 /* Loop until no stubs added. After iteration 20 of this loop we may
12454 exit on a stub section shrinking. This is to break out of a
12455 pathological case where adding stubs on one iteration decreases
12456 section gaps (perhaps due to alignment), which then requires
12457 fewer or smaller stubs on the next iteration. */
12462 unsigned int bfd_indx;
12463 struct map_stub *group;
12465 htab->stub_iteration += 1;
12467 for (input_bfd = info->input_bfds, bfd_indx = 0;
12469 input_bfd = input_bfd->link.next, bfd_indx++)
12471 Elf_Internal_Shdr *symtab_hdr;
12473 Elf_Internal_Sym *local_syms = NULL;
12475 if (!is_ppc64_elf (input_bfd))
12478 /* We'll need the symbol table in a second. */
12479 symtab_hdr = &elf_symtab_hdr (input_bfd);
12480 if (symtab_hdr->sh_info == 0)
12483 /* Walk over each section attached to the input bfd. */
12484 for (section = input_bfd->sections;
12486 section = section->next)
12488 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12490 /* If there aren't any relocs, then there's nothing more
12492 if ((section->flags & SEC_RELOC) == 0
12493 || (section->flags & SEC_ALLOC) == 0
12494 || (section->flags & SEC_LOAD) == 0
12495 || (section->flags & SEC_CODE) == 0
12496 || section->reloc_count == 0)
12499 /* If this section is a link-once section that will be
12500 discarded, then don't create any stubs. */
12501 if (section->output_section == NULL
12502 || section->output_section->owner != info->output_bfd)
12505 /* Get the relocs. */
12507 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12508 info->keep_memory);
12509 if (internal_relocs == NULL)
12510 goto error_ret_free_local;
12512 /* Now examine each relocation. */
12513 irela = internal_relocs;
12514 irelaend = irela + section->reloc_count;
12515 for (; irela < irelaend; irela++)
12517 enum elf_ppc64_reloc_type r_type;
12518 unsigned int r_indx;
12519 enum ppc_stub_type stub_type;
12520 struct ppc_stub_hash_entry *stub_entry;
12521 asection *sym_sec, *code_sec;
12522 bfd_vma sym_value, code_value;
12523 bfd_vma destination;
12524 unsigned long local_off;
12525 bfd_boolean ok_dest;
12526 struct ppc_link_hash_entry *hash;
12527 struct ppc_link_hash_entry *fdh;
12528 struct elf_link_hash_entry *h;
12529 Elf_Internal_Sym *sym;
12531 const asection *id_sec;
12532 struct _opd_sec_data *opd;
12533 struct plt_entry *plt_ent;
12535 r_type = ELF64_R_TYPE (irela->r_info);
12536 r_indx = ELF64_R_SYM (irela->r_info);
12538 if (r_type >= R_PPC64_max)
12540 bfd_set_error (bfd_error_bad_value);
12541 goto error_ret_free_internal;
12544 /* Only look for stubs on branch instructions. */
12545 if (r_type != R_PPC64_REL24
12546 && r_type != R_PPC64_REL14
12547 && r_type != R_PPC64_REL14_BRTAKEN
12548 && r_type != R_PPC64_REL14_BRNTAKEN)
12551 /* Now determine the call target, its name, value,
12553 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12554 r_indx, input_bfd))
12555 goto error_ret_free_internal;
12556 hash = (struct ppc_link_hash_entry *) h;
12563 sym_value = sym->st_value;
12564 if (sym_sec != NULL
12565 && sym_sec->output_section != NULL)
12568 else if (hash->elf.root.type == bfd_link_hash_defined
12569 || hash->elf.root.type == bfd_link_hash_defweak)
12571 sym_value = hash->elf.root.u.def.value;
12572 if (sym_sec->output_section != NULL)
12575 else if (hash->elf.root.type == bfd_link_hash_undefweak
12576 || hash->elf.root.type == bfd_link_hash_undefined)
12578 /* Recognise an old ABI func code entry sym, and
12579 use the func descriptor sym instead if it is
12581 if (hash->elf.root.root.string[0] == '.'
12582 && hash->oh != NULL)
12584 fdh = ppc_follow_link (hash->oh);
12585 if (fdh->elf.root.type == bfd_link_hash_defined
12586 || fdh->elf.root.type == bfd_link_hash_defweak)
12588 sym_sec = fdh->elf.root.u.def.section;
12589 sym_value = fdh->elf.root.u.def.value;
12590 if (sym_sec->output_section != NULL)
12599 bfd_set_error (bfd_error_bad_value);
12600 goto error_ret_free_internal;
12607 sym_value += irela->r_addend;
12608 destination = (sym_value
12609 + sym_sec->output_offset
12610 + sym_sec->output_section->vma);
12611 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12616 code_sec = sym_sec;
12617 code_value = sym_value;
12618 opd = get_opd_info (sym_sec);
12623 if (hash == NULL && opd->adjust != NULL)
12625 long adjust = opd->adjust[OPD_NDX (sym_value)];
12628 code_value += adjust;
12629 sym_value += adjust;
12631 dest = opd_entry_value (sym_sec, sym_value,
12632 &code_sec, &code_value, FALSE);
12633 if (dest != (bfd_vma) -1)
12635 destination = dest;
12638 /* Fixup old ABI sym to point at code
12640 hash->elf.root.type = bfd_link_hash_defweak;
12641 hash->elf.root.u.def.section = code_sec;
12642 hash->elf.root.u.def.value = code_value;
12647 /* Determine what (if any) linker stub is needed. */
12649 stub_type = ppc_type_of_stub (section, irela, &hash,
12650 &plt_ent, destination,
12653 if (stub_type != ppc_stub_plt_call)
12655 /* Check whether we need a TOC adjusting stub.
12656 Since the linker pastes together pieces from
12657 different object files when creating the
12658 _init and _fini functions, it may be that a
12659 call to what looks like a local sym is in
12660 fact a call needing a TOC adjustment. */
12661 if (code_sec != NULL
12662 && code_sec->output_section != NULL
12663 && (htab->sec_info[code_sec->id].toc_off
12664 != htab->sec_info[section->id].toc_off)
12665 && (code_sec->has_toc_reloc
12666 || code_sec->makes_toc_func_call))
12667 stub_type = ppc_stub_long_branch_r2off;
12670 if (stub_type == ppc_stub_none)
12673 /* __tls_get_addr calls might be eliminated. */
12674 if (stub_type != ppc_stub_plt_call
12676 && (hash == htab->tls_get_addr
12677 || hash == htab->tls_get_addr_fd)
12678 && section->has_tls_reloc
12679 && irela != internal_relocs)
12681 /* Get tls info. */
12682 unsigned char *tls_mask;
12684 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12685 irela - 1, input_bfd))
12686 goto error_ret_free_internal;
12687 if (*tls_mask != 0)
12691 if (stub_type == ppc_stub_plt_call)
12694 && htab->params->plt_localentry0 != 0
12695 && is_elfv2_localentry0 (&hash->elf))
12696 htab->has_plt_localentry0 = 1;
12697 else if (irela + 1 < irelaend
12698 && irela[1].r_offset == irela->r_offset + 4
12699 && (ELF64_R_TYPE (irela[1].r_info)
12700 == R_PPC64_TOCSAVE))
12702 if (!tocsave_find (htab, INSERT,
12703 &local_syms, irela + 1, input_bfd))
12704 goto error_ret_free_internal;
12707 stub_type = ppc_stub_plt_call_r2save;
12710 /* Support for grouping stub sections. */
12711 id_sec = htab->sec_info[section->id].u.group->link_sec;
12713 /* Get the name of this stub. */
12714 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12716 goto error_ret_free_internal;
12718 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12719 stub_name, FALSE, FALSE);
12720 if (stub_entry != NULL)
12722 /* The proper stub has already been created. */
12724 if (stub_type == ppc_stub_plt_call_r2save)
12725 stub_entry->stub_type = stub_type;
12729 stub_entry = ppc_add_stub (stub_name, section, info);
12730 if (stub_entry == NULL)
12733 error_ret_free_internal:
12734 if (elf_section_data (section)->relocs == NULL)
12735 free (internal_relocs);
12736 error_ret_free_local:
12737 if (local_syms != NULL
12738 && (symtab_hdr->contents
12739 != (unsigned char *) local_syms))
12744 stub_entry->stub_type = stub_type;
12745 if (stub_type != ppc_stub_plt_call
12746 && stub_type != ppc_stub_plt_call_r2save)
12748 stub_entry->target_value = code_value;
12749 stub_entry->target_section = code_sec;
12753 stub_entry->target_value = sym_value;
12754 stub_entry->target_section = sym_sec;
12756 stub_entry->h = hash;
12757 stub_entry->plt_ent = plt_ent;
12758 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12760 if (stub_entry->h != NULL)
12761 htab->stub_globals += 1;
12764 /* We're done with the internal relocs, free them. */
12765 if (elf_section_data (section)->relocs != internal_relocs)
12766 free (internal_relocs);
12769 if (local_syms != NULL
12770 && symtab_hdr->contents != (unsigned char *) local_syms)
12772 if (!info->keep_memory)
12775 symtab_hdr->contents = (unsigned char *) local_syms;
12779 /* We may have added some stubs. Find out the new size of the
12781 for (group = htab->group; group != NULL; group = group->next)
12782 if (group->stub_sec != NULL)
12784 asection *stub_sec = group->stub_sec;
12786 if (htab->stub_iteration <= STUB_SHRINK_ITER
12787 || stub_sec->rawsize < stub_sec->size)
12788 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12789 stub_sec->rawsize = stub_sec->size;
12790 stub_sec->size = 0;
12791 stub_sec->reloc_count = 0;
12792 stub_sec->flags &= ~SEC_RELOC;
12795 htab->brlt->size = 0;
12796 htab->brlt->reloc_count = 0;
12797 htab->brlt->flags &= ~SEC_RELOC;
12798 if (htab->relbrlt != NULL)
12799 htab->relbrlt->size = 0;
12801 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12803 for (group = htab->group; group != NULL; group = group->next)
12804 if (group->needs_save_res)
12805 group->stub_sec->size += htab->sfpr->size;
12807 if (info->emitrelocations
12808 && htab->glink != NULL && htab->glink->size != 0)
12810 htab->glink->reloc_count = 1;
12811 htab->glink->flags |= SEC_RELOC;
12814 if (htab->glink_eh_frame != NULL
12815 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12816 && htab->glink_eh_frame->output_section->size != 0)
12818 size_t size = 0, align = 4;
12820 for (group = htab->group; group != NULL; group = group->next)
12821 if (group->stub_sec != NULL)
12822 size += stub_eh_frame_size (group, align);
12823 if (htab->glink != NULL && htab->glink->size != 0)
12824 size += (24 + align - 1) & -align;
12826 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12827 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12828 size = (size + align - 1) & -align;
12829 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12830 htab->glink_eh_frame->size = size;
12833 if (htab->params->plt_stub_align != 0)
12834 for (group = htab->group; group != NULL; group = group->next)
12835 if (group->stub_sec != NULL)
12836 group->stub_sec->size = ((group->stub_sec->size
12837 + (1 << htab->params->plt_stub_align) - 1)
12838 & -(1 << htab->params->plt_stub_align));
12840 for (group = htab->group; group != NULL; group = group->next)
12841 if (group->stub_sec != NULL
12842 && group->stub_sec->rawsize != group->stub_sec->size
12843 && (htab->stub_iteration <= STUB_SHRINK_ITER
12844 || group->stub_sec->rawsize < group->stub_sec->size))
12848 && (htab->glink_eh_frame == NULL
12849 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12852 /* Ask the linker to do its stuff. */
12853 (*htab->params->layout_sections_again) ();
12856 if (htab->glink_eh_frame != NULL
12857 && htab->glink_eh_frame->size != 0)
12860 bfd_byte *p, *last_fde;
12861 size_t last_fde_len, size, align, pad;
12862 struct map_stub *group;
12864 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12867 htab->glink_eh_frame->contents = p;
12871 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12872 /* CIE length (rewrite in case little-endian). */
12873 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12874 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12875 p += last_fde_len + 4;
12877 for (group = htab->group; group != NULL; group = group->next)
12878 if (group->stub_sec != NULL)
12881 last_fde_len = stub_eh_frame_size (group, align) - 4;
12883 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12886 val = p - htab->glink_eh_frame->contents;
12887 bfd_put_32 (htab->elf.dynobj, val, p);
12889 /* Offset to stub section, written later. */
12891 /* stub section size. */
12892 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
12894 /* Augmentation. */
12896 if (group->tls_get_addr_opt_bctrl != -1u)
12898 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12900 /* This FDE needs more than just the default.
12901 Describe __tls_get_addr_opt stub LR. */
12903 *p++ = DW_CFA_advance_loc + to_bctrl;
12904 else if (to_bctrl < 256)
12906 *p++ = DW_CFA_advance_loc1;
12909 else if (to_bctrl < 65536)
12911 *p++ = DW_CFA_advance_loc2;
12912 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
12917 *p++ = DW_CFA_advance_loc4;
12918 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
12921 *p++ = DW_CFA_offset_extended_sf;
12923 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
12924 *p++ = DW_CFA_advance_loc + 4;
12925 *p++ = DW_CFA_restore_extended;
12929 p = last_fde + last_fde_len + 4;
12931 if (htab->glink != NULL && htab->glink->size != 0)
12934 last_fde_len = ((24 + align - 1) & -align) - 4;
12936 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12939 val = p - htab->glink_eh_frame->contents;
12940 bfd_put_32 (htab->elf.dynobj, val, p);
12942 /* Offset to .glink, written later. */
12945 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12947 /* Augmentation. */
12950 *p++ = DW_CFA_advance_loc + 1;
12951 *p++ = DW_CFA_register;
12953 *p++ = htab->opd_abi ? 12 : 0;
12954 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
12955 *p++ = DW_CFA_restore_extended;
12957 p += ((24 + align - 1) & -align) - 24;
12959 /* Subsume any padding into the last FDE if user .eh_frame
12960 sections are aligned more than glink_eh_frame. Otherwise any
12961 zero padding will be seen as a terminator. */
12962 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12963 size = p - htab->glink_eh_frame->contents;
12964 pad = ((size + align - 1) & -align) - size;
12965 htab->glink_eh_frame->size = size + pad;
12966 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12969 maybe_strip_output (info, htab->brlt);
12970 if (htab->glink_eh_frame != NULL)
12971 maybe_strip_output (info, htab->glink_eh_frame);
12976 /* Called after we have determined section placement. If sections
12977 move, we'll be called again. Provide a value for TOCstart. */
12980 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12983 bfd_vma TOCstart, adjust;
12987 struct elf_link_hash_entry *h;
12988 struct elf_link_hash_table *htab = elf_hash_table (info);
12990 if (is_elf_hash_table (htab)
12991 && htab->hgot != NULL)
12995 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12996 if (is_elf_hash_table (htab))
13000 && h->root.type == bfd_link_hash_defined
13001 && !h->root.linker_def
13002 && (!is_elf_hash_table (htab)
13003 || h->def_regular))
13005 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
13006 + h->root.u.def.section->output_offset
13007 + h->root.u.def.section->output_section->vma);
13008 _bfd_set_gp_value (obfd, TOCstart);
13013 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13014 order. The TOC starts where the first of these sections starts. */
13015 s = bfd_get_section_by_name (obfd, ".got");
13016 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13017 s = bfd_get_section_by_name (obfd, ".toc");
13018 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13019 s = bfd_get_section_by_name (obfd, ".tocbss");
13020 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13021 s = bfd_get_section_by_name (obfd, ".plt");
13022 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13024 /* This may happen for
13025 o references to TOC base (SYM@toc / TOC[tc0]) without a
13027 o bad linker script
13028 o --gc-sections and empty TOC sections
13030 FIXME: Warn user? */
13032 /* Look for a likely section. We probably won't even be
13034 for (s = obfd->sections; s != NULL; s = s->next)
13035 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
13037 == (SEC_ALLOC | SEC_SMALL_DATA))
13040 for (s = obfd->sections; s != NULL; s = s->next)
13041 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
13042 == (SEC_ALLOC | SEC_SMALL_DATA))
13045 for (s = obfd->sections; s != NULL; s = s->next)
13046 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
13050 for (s = obfd->sections; s != NULL; s = s->next)
13051 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
13057 TOCstart = s->output_section->vma + s->output_offset;
13059 /* Force alignment. */
13060 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
13061 TOCstart -= adjust;
13062 _bfd_set_gp_value (obfd, TOCstart);
13064 if (info != NULL && s != NULL)
13066 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13070 if (htab->elf.hgot != NULL)
13072 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
13073 htab->elf.hgot->root.u.def.section = s;
13078 struct bfd_link_hash_entry *bh = NULL;
13079 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
13080 s, TOC_BASE_OFF - adjust,
13081 NULL, FALSE, FALSE, &bh);
13087 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13088 write out any global entry stubs. */
13091 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
13093 struct bfd_link_info *info;
13094 struct ppc_link_hash_table *htab;
13095 struct plt_entry *pent;
13098 if (h->root.type == bfd_link_hash_indirect)
13101 if (!h->pointer_equality_needed)
13104 if (h->def_regular)
13108 htab = ppc_hash_table (info);
13113 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
13114 if (pent->plt.offset != (bfd_vma) -1
13115 && pent->addend == 0)
13121 p = s->contents + h->root.u.def.value;
13122 plt = htab->elf.splt;
13123 if (!htab->elf.dynamic_sections_created
13124 || h->dynindx == -1)
13125 plt = htab->elf.iplt;
13126 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
13127 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
13129 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
13131 info->callbacks->einfo
13132 (_("%P: linkage table error against `%T'\n"),
13133 h->root.root.string);
13134 bfd_set_error (bfd_error_bad_value);
13135 htab->stub_error = TRUE;
13138 htab->stub_count[ppc_stub_global_entry - 1] += 1;
13139 if (htab->params->emit_stub_syms)
13141 size_t len = strlen (h->root.root.string);
13142 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
13147 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
13148 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13151 if (h->root.type == bfd_link_hash_new)
13153 h->root.type = bfd_link_hash_defined;
13154 h->root.u.def.section = s;
13155 h->root.u.def.value = p - s->contents;
13156 h->ref_regular = 1;
13157 h->def_regular = 1;
13158 h->ref_regular_nonweak = 1;
13159 h->forced_local = 1;
13161 h->root.linker_def = 1;
13165 if (PPC_HA (off) != 0)
13167 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13170 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13172 bfd_put_32 (s->owner, MTCTR_R12, p);
13174 bfd_put_32 (s->owner, BCTR, p);
13180 /* Build all the stubs associated with the current output file.
13181 The stubs are kept in a hash table attached to the main linker
13182 hash table. This function is called via gldelf64ppc_finish. */
13185 ppc64_elf_build_stubs (struct bfd_link_info *info,
13188 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13189 struct map_stub *group;
13190 asection *stub_sec;
13192 int stub_sec_count = 0;
13197 /* Allocate memory to hold the linker stubs. */
13198 for (group = htab->group; group != NULL; group = group->next)
13199 if ((stub_sec = group->stub_sec) != NULL
13200 && stub_sec->size != 0)
13202 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13203 if (stub_sec->contents == NULL)
13205 stub_sec->size = 0;
13208 if (htab->glink != NULL && htab->glink->size != 0)
13213 /* Build the .glink plt call stub. */
13214 if (htab->params->emit_stub_syms)
13216 struct elf_link_hash_entry *h;
13217 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13218 TRUE, FALSE, FALSE);
13221 if (h->root.type == bfd_link_hash_new)
13223 h->root.type = bfd_link_hash_defined;
13224 h->root.u.def.section = htab->glink;
13225 h->root.u.def.value = 8;
13226 h->ref_regular = 1;
13227 h->def_regular = 1;
13228 h->ref_regular_nonweak = 1;
13229 h->forced_local = 1;
13231 h->root.linker_def = 1;
13234 plt0 = (htab->elf.splt->output_section->vma
13235 + htab->elf.splt->output_offset
13237 if (info->emitrelocations)
13239 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13242 r->r_offset = (htab->glink->output_offset
13243 + htab->glink->output_section->vma);
13244 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13245 r->r_addend = plt0;
13247 p = htab->glink->contents;
13248 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13249 bfd_put_64 (htab->glink->owner, plt0, p);
13253 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13255 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13257 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13259 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13261 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13263 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13265 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13267 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13269 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13271 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13276 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13278 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13280 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13282 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13284 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13286 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13288 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13290 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13292 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13294 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13296 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13298 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13300 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13303 bfd_put_32 (htab->glink->owner, BCTR, p);
13305 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13307 bfd_put_32 (htab->glink->owner, NOP, p);
13311 /* Build the .glink lazy link call stubs. */
13313 while (p < htab->glink->contents + htab->glink->rawsize)
13319 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13324 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13326 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13331 bfd_put_32 (htab->glink->owner,
13332 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13337 /* Build .glink global entry stubs. */
13338 if (htab->glink->size > htab->glink->rawsize)
13339 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13342 if (htab->brlt != NULL && htab->brlt->size != 0)
13344 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13346 if (htab->brlt->contents == NULL)
13349 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13351 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13352 htab->relbrlt->size);
13353 if (htab->relbrlt->contents == NULL)
13357 /* Build the stubs as directed by the stub hash table. */
13358 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13360 for (group = htab->group; group != NULL; group = group->next)
13361 if (group->needs_save_res)
13363 stub_sec = group->stub_sec;
13364 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13366 if (htab->params->emit_stub_syms)
13370 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13371 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13374 stub_sec->size += htab->sfpr->size;
13377 if (htab->relbrlt != NULL)
13378 htab->relbrlt->reloc_count = 0;
13380 if (htab->params->plt_stub_align != 0)
13381 for (group = htab->group; group != NULL; group = group->next)
13382 if ((stub_sec = group->stub_sec) != NULL)
13383 stub_sec->size = ((stub_sec->size
13384 + (1 << htab->params->plt_stub_align) - 1)
13385 & -(1 << htab->params->plt_stub_align));
13387 for (group = htab->group; group != NULL; group = group->next)
13388 if ((stub_sec = group->stub_sec) != NULL)
13390 stub_sec_count += 1;
13391 if (stub_sec->rawsize != stub_sec->size
13392 && (htab->stub_iteration <= STUB_SHRINK_ITER
13393 || stub_sec->rawsize < stub_sec->size))
13397 /* Note that the glink_eh_frame check here is not only testing that
13398 the generated size matched the calculated size but also that
13399 bfd_elf_discard_info didn't make any changes to the section. */
13401 || (htab->glink_eh_frame != NULL
13402 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13404 htab->stub_error = TRUE;
13405 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13408 if (htab->stub_error)
13413 *stats = bfd_malloc (500);
13414 if (*stats == NULL)
13417 sprintf (*stats, _("linker stubs in %u group%s\n"
13419 " toc adjust %lu\n"
13420 " long branch %lu\n"
13421 " long toc adj %lu\n"
13423 " plt call toc %lu\n"
13424 " global entry %lu"),
13426 stub_sec_count == 1 ? "" : "s",
13427 htab->stub_count[ppc_stub_long_branch - 1],
13428 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13429 htab->stub_count[ppc_stub_plt_branch - 1],
13430 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13431 htab->stub_count[ppc_stub_plt_call - 1],
13432 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13433 htab->stub_count[ppc_stub_global_entry - 1]);
13438 /* What to do when ld finds relocations against symbols defined in
13439 discarded sections. */
13441 static unsigned int
13442 ppc64_elf_action_discarded (asection *sec)
13444 if (strcmp (".opd", sec->name) == 0)
13447 if (strcmp (".toc", sec->name) == 0)
13450 if (strcmp (".toc1", sec->name) == 0)
13453 return _bfd_elf_default_action_discarded (sec);
13456 /* The RELOCATE_SECTION function is called by the ELF backend linker
13457 to handle the relocations for a section.
13459 The relocs are always passed as Rela structures; if the section
13460 actually uses Rel structures, the r_addend field will always be
13463 This function is responsible for adjust the section contents as
13464 necessary, and (if using Rela relocs and generating a
13465 relocatable output file) adjusting the reloc addend as
13468 This function does not have to worry about setting the reloc
13469 address or the reloc symbol index.
13471 LOCAL_SYMS is a pointer to the swapped in local symbols.
13473 LOCAL_SECTIONS is an array giving the section in the input file
13474 corresponding to the st_shndx field of each local symbol.
13476 The global hash table entry for the global symbols can be found
13477 via elf_sym_hashes (input_bfd).
13479 When generating relocatable output, this function must handle
13480 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13481 going to be the section symbol corresponding to the output
13482 section, which means that the addend must be adjusted
13486 ppc64_elf_relocate_section (bfd *output_bfd,
13487 struct bfd_link_info *info,
13489 asection *input_section,
13490 bfd_byte *contents,
13491 Elf_Internal_Rela *relocs,
13492 Elf_Internal_Sym *local_syms,
13493 asection **local_sections)
13495 struct ppc_link_hash_table *htab;
13496 Elf_Internal_Shdr *symtab_hdr;
13497 struct elf_link_hash_entry **sym_hashes;
13498 Elf_Internal_Rela *rel;
13499 Elf_Internal_Rela *wrel;
13500 Elf_Internal_Rela *relend;
13501 Elf_Internal_Rela outrel;
13503 struct got_entry **local_got_ents;
13505 bfd_boolean ret = TRUE;
13506 bfd_boolean is_opd;
13507 /* Assume 'at' branch hints. */
13508 bfd_boolean is_isa_v2 = TRUE;
13509 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13511 /* Initialize howto table if needed. */
13512 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13515 htab = ppc_hash_table (info);
13519 /* Don't relocate stub sections. */
13520 if (input_section->owner == htab->params->stub_bfd)
13523 BFD_ASSERT (is_ppc64_elf (input_bfd));
13525 local_got_ents = elf_local_got_ents (input_bfd);
13526 TOCstart = elf_gp (output_bfd);
13527 symtab_hdr = &elf_symtab_hdr (input_bfd);
13528 sym_hashes = elf_sym_hashes (input_bfd);
13529 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13531 rel = wrel = relocs;
13532 relend = relocs + input_section->reloc_count;
13533 for (; rel < relend; wrel++, rel++)
13535 enum elf_ppc64_reloc_type r_type;
13537 bfd_reloc_status_type r;
13538 Elf_Internal_Sym *sym;
13540 struct elf_link_hash_entry *h_elf;
13541 struct ppc_link_hash_entry *h;
13542 struct ppc_link_hash_entry *fdh;
13543 const char *sym_name;
13544 unsigned long r_symndx, toc_symndx;
13545 bfd_vma toc_addend;
13546 unsigned char tls_mask, tls_gd, tls_type;
13547 unsigned char sym_type;
13548 bfd_vma relocation;
13549 bfd_boolean unresolved_reloc;
13550 bfd_boolean warned;
13551 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13554 struct ppc_stub_hash_entry *stub_entry;
13555 bfd_vma max_br_offset;
13557 Elf_Internal_Rela orig_rel;
13558 reloc_howto_type *howto;
13559 struct reloc_howto_struct alt_howto;
13564 r_type = ELF64_R_TYPE (rel->r_info);
13565 r_symndx = ELF64_R_SYM (rel->r_info);
13567 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13568 symbol of the previous ADDR64 reloc. The symbol gives us the
13569 proper TOC base to use. */
13570 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13572 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13574 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13580 unresolved_reloc = FALSE;
13583 if (r_symndx < symtab_hdr->sh_info)
13585 /* It's a local symbol. */
13586 struct _opd_sec_data *opd;
13588 sym = local_syms + r_symndx;
13589 sec = local_sections[r_symndx];
13590 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13591 sym_type = ELF64_ST_TYPE (sym->st_info);
13592 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13593 opd = get_opd_info (sec);
13594 if (opd != NULL && opd->adjust != NULL)
13596 long adjust = opd->adjust[OPD_NDX (sym->st_value
13602 /* If this is a relocation against the opd section sym
13603 and we have edited .opd, adjust the reloc addend so
13604 that ld -r and ld --emit-relocs output is correct.
13605 If it is a reloc against some other .opd symbol,
13606 then the symbol value will be adjusted later. */
13607 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13608 rel->r_addend += adjust;
13610 relocation += adjust;
13616 bfd_boolean ignored;
13618 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13619 r_symndx, symtab_hdr, sym_hashes,
13620 h_elf, sec, relocation,
13621 unresolved_reloc, warned, ignored);
13622 sym_name = h_elf->root.root.string;
13623 sym_type = h_elf->type;
13625 && sec->owner == output_bfd
13626 && strcmp (sec->name, ".opd") == 0)
13628 /* This is a symbol defined in a linker script. All
13629 such are defined in output sections, even those
13630 defined by simple assignment from a symbol defined in
13631 an input section. Transfer the symbol to an
13632 appropriate input .opd section, so that a branch to
13633 this symbol will be mapped to the location specified
13634 by the opd entry. */
13635 struct bfd_link_order *lo;
13636 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13637 if (lo->type == bfd_indirect_link_order)
13639 asection *isec = lo->u.indirect.section;
13640 if (h_elf->root.u.def.value >= isec->output_offset
13641 && h_elf->root.u.def.value < (isec->output_offset
13644 h_elf->root.u.def.value -= isec->output_offset;
13645 h_elf->root.u.def.section = isec;
13652 h = (struct ppc_link_hash_entry *) h_elf;
13654 if (sec != NULL && discarded_section (sec))
13656 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13657 input_bfd, input_section,
13658 contents + rel->r_offset);
13659 wrel->r_offset = rel->r_offset;
13661 wrel->r_addend = 0;
13663 /* For ld -r, remove relocations in debug sections against
13664 sections defined in discarded sections. Not done for
13665 non-debug to preserve relocs in .eh_frame which the
13666 eh_frame editing code expects to be present. */
13667 if (bfd_link_relocatable (info)
13668 && (input_section->flags & SEC_DEBUGGING))
13674 if (bfd_link_relocatable (info))
13677 if (h != NULL && &h->elf == htab->elf.hgot)
13679 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13680 sec = bfd_abs_section_ptr;
13681 unresolved_reloc = FALSE;
13684 /* TLS optimizations. Replace instruction sequences and relocs
13685 based on information we collected in tls_optimize. We edit
13686 RELOCS so that --emit-relocs will output something sensible
13687 for the final instruction stream. */
13692 tls_mask = h->tls_mask;
13693 else if (local_got_ents != NULL)
13695 struct plt_entry **local_plt = (struct plt_entry **)
13696 (local_got_ents + symtab_hdr->sh_info);
13697 unsigned char *lgot_masks = (unsigned char *)
13698 (local_plt + symtab_hdr->sh_info);
13699 tls_mask = lgot_masks[r_symndx];
13702 && (r_type == R_PPC64_TLS
13703 || r_type == R_PPC64_TLSGD
13704 || r_type == R_PPC64_TLSLD))
13706 /* Check for toc tls entries. */
13707 unsigned char *toc_tls;
13709 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13710 &local_syms, rel, input_bfd))
13714 tls_mask = *toc_tls;
13717 /* Check that tls relocs are used with tls syms, and non-tls
13718 relocs are used with non-tls syms. */
13719 if (r_symndx != STN_UNDEF
13720 && r_type != R_PPC64_NONE
13722 || h->elf.root.type == bfd_link_hash_defined
13723 || h->elf.root.type == bfd_link_hash_defweak)
13724 && (IS_PPC64_TLS_RELOC (r_type)
13725 != (sym_type == STT_TLS
13726 || (sym_type == STT_SECTION
13727 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13730 && (r_type == R_PPC64_TLS
13731 || r_type == R_PPC64_TLSGD
13732 || r_type == R_PPC64_TLSLD))
13733 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13736 info->callbacks->einfo
13737 (!IS_PPC64_TLS_RELOC (r_type)
13738 /* xgettext:c-format */
13739 ? _("%H: %s used with TLS symbol `%T'\n")
13740 /* xgettext:c-format */
13741 : _("%H: %s used with non-TLS symbol `%T'\n"),
13742 input_bfd, input_section, rel->r_offset,
13743 ppc64_elf_howto_table[r_type]->name,
13747 /* Ensure reloc mapping code below stays sane. */
13748 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13749 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13750 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13751 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13752 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13753 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13754 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13755 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13756 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13757 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13765 case R_PPC64_LO_DS_OPT:
13766 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13767 if ((insn & (0x3f << 26)) != 58u << 26)
13769 insn += (14u << 26) - (58u << 26);
13770 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13771 r_type = R_PPC64_TOC16_LO;
13772 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13775 case R_PPC64_TOC16:
13776 case R_PPC64_TOC16_LO:
13777 case R_PPC64_TOC16_DS:
13778 case R_PPC64_TOC16_LO_DS:
13780 /* Check for toc tls entries. */
13781 unsigned char *toc_tls;
13784 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13785 &local_syms, rel, input_bfd);
13791 tls_mask = *toc_tls;
13792 if (r_type == R_PPC64_TOC16_DS
13793 || r_type == R_PPC64_TOC16_LO_DS)
13796 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13801 /* If we found a GD reloc pair, then we might be
13802 doing a GD->IE transition. */
13805 tls_gd = TLS_TPRELGD;
13806 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13809 else if (retval == 3)
13811 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13819 case R_PPC64_GOT_TPREL16_HI:
13820 case R_PPC64_GOT_TPREL16_HA:
13822 && (tls_mask & TLS_TPREL) == 0)
13824 rel->r_offset -= d_offset;
13825 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13826 r_type = R_PPC64_NONE;
13827 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13831 case R_PPC64_GOT_TPREL16_DS:
13832 case R_PPC64_GOT_TPREL16_LO_DS:
13834 && (tls_mask & TLS_TPREL) == 0)
13837 insn = bfd_get_32 (input_bfd,
13838 contents + rel->r_offset - d_offset);
13840 insn |= 0x3c0d0000; /* addis 0,13,0 */
13841 bfd_put_32 (input_bfd, insn,
13842 contents + rel->r_offset - d_offset);
13843 r_type = R_PPC64_TPREL16_HA;
13844 if (toc_symndx != 0)
13846 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13847 rel->r_addend = toc_addend;
13848 /* We changed the symbol. Start over in order to
13849 get h, sym, sec etc. right. */
13853 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13859 && (tls_mask & TLS_TPREL) == 0)
13861 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13862 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13865 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13866 /* Was PPC64_TLS which sits on insn boundary, now
13867 PPC64_TPREL16_LO which is at low-order half-word. */
13868 rel->r_offset += d_offset;
13869 r_type = R_PPC64_TPREL16_LO;
13870 if (toc_symndx != 0)
13872 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13873 rel->r_addend = toc_addend;
13874 /* We changed the symbol. Start over in order to
13875 get h, sym, sec etc. right. */
13879 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13883 case R_PPC64_GOT_TLSGD16_HI:
13884 case R_PPC64_GOT_TLSGD16_HA:
13885 tls_gd = TLS_TPRELGD;
13886 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13890 case R_PPC64_GOT_TLSLD16_HI:
13891 case R_PPC64_GOT_TLSLD16_HA:
13892 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13895 if ((tls_mask & tls_gd) != 0)
13896 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13897 + R_PPC64_GOT_TPREL16_DS);
13900 rel->r_offset -= d_offset;
13901 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13902 r_type = R_PPC64_NONE;
13904 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13908 case R_PPC64_GOT_TLSGD16:
13909 case R_PPC64_GOT_TLSGD16_LO:
13910 tls_gd = TLS_TPRELGD;
13911 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13915 case R_PPC64_GOT_TLSLD16:
13916 case R_PPC64_GOT_TLSLD16_LO:
13917 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13919 unsigned int insn1, insn2, insn3;
13923 offset = (bfd_vma) -1;
13924 /* If not using the newer R_PPC64_TLSGD/LD to mark
13925 __tls_get_addr calls, we must trust that the call
13926 stays with its arg setup insns, ie. that the next
13927 reloc is the __tls_get_addr call associated with
13928 the current reloc. Edit both insns. */
13929 if (input_section->has_tls_get_addr_call
13930 && rel + 1 < relend
13931 && branch_reloc_hash_match (input_bfd, rel + 1,
13932 htab->tls_get_addr,
13933 htab->tls_get_addr_fd))
13934 offset = rel[1].r_offset;
13935 /* We read the low GOT_TLS (or TOC16) insn because we
13936 need to keep the destination reg. It may be
13937 something other than the usual r3, and moved to r3
13938 before the call by intervening code. */
13939 insn1 = bfd_get_32 (input_bfd,
13940 contents + rel->r_offset - d_offset);
13941 if ((tls_mask & tls_gd) != 0)
13944 insn1 &= (0x1f << 21) | (0x1f << 16);
13945 insn1 |= 58 << 26; /* ld */
13946 insn2 = 0x7c636a14; /* add 3,3,13 */
13947 if (offset != (bfd_vma) -1)
13948 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13949 if ((tls_mask & TLS_EXPLICIT) == 0)
13950 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13951 + R_PPC64_GOT_TPREL16_DS);
13953 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13954 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13959 insn1 &= 0x1f << 21;
13960 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13961 insn2 = 0x38630000; /* addi 3,3,0 */
13964 /* Was an LD reloc. */
13966 sec = local_sections[toc_symndx];
13968 r_symndx < symtab_hdr->sh_info;
13970 if (local_sections[r_symndx] == sec)
13972 if (r_symndx >= symtab_hdr->sh_info)
13973 r_symndx = STN_UNDEF;
13974 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13975 if (r_symndx != STN_UNDEF)
13976 rel->r_addend -= (local_syms[r_symndx].st_value
13977 + sec->output_offset
13978 + sec->output_section->vma);
13980 else if (toc_symndx != 0)
13982 r_symndx = toc_symndx;
13983 rel->r_addend = toc_addend;
13985 r_type = R_PPC64_TPREL16_HA;
13986 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13987 if (offset != (bfd_vma) -1)
13989 rel[1].r_info = ELF64_R_INFO (r_symndx,
13990 R_PPC64_TPREL16_LO);
13991 rel[1].r_offset = offset + d_offset;
13992 rel[1].r_addend = rel->r_addend;
13995 bfd_put_32 (input_bfd, insn1,
13996 contents + rel->r_offset - d_offset);
13997 if (offset != (bfd_vma) -1)
13999 insn3 = bfd_get_32 (input_bfd,
14000 contents + offset + 4);
14002 || insn3 == CROR_151515 || insn3 == CROR_313131)
14004 rel[1].r_offset += 4;
14005 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14008 bfd_put_32 (input_bfd, insn2, contents + offset);
14010 if ((tls_mask & tls_gd) == 0
14011 && (tls_gd == 0 || toc_symndx != 0))
14013 /* We changed the symbol. Start over in order
14014 to get h, sym, sec etc. right. */
14020 case R_PPC64_TLSGD:
14021 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
14023 unsigned int insn2, insn3;
14024 bfd_vma offset = rel->r_offset;
14026 if ((tls_mask & TLS_TPRELGD) != 0)
14029 r_type = R_PPC64_NONE;
14030 insn2 = 0x7c636a14; /* add 3,3,13 */
14035 if (toc_symndx != 0)
14037 r_symndx = toc_symndx;
14038 rel->r_addend = toc_addend;
14040 r_type = R_PPC64_TPREL16_LO;
14041 rel->r_offset = offset + d_offset;
14042 insn2 = 0x38630000; /* addi 3,3,0 */
14044 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14045 /* Zap the reloc on the _tls_get_addr call too. */
14046 BFD_ASSERT (offset == rel[1].r_offset);
14047 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14048 insn3 = bfd_get_32 (input_bfd,
14049 contents + offset + 4);
14051 || insn3 == CROR_151515 || insn3 == CROR_313131)
14053 rel->r_offset += 4;
14054 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14057 bfd_put_32 (input_bfd, insn2, contents + offset);
14058 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
14063 case R_PPC64_TLSLD:
14064 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
14066 unsigned int insn2, insn3;
14067 bfd_vma offset = rel->r_offset;
14070 sec = local_sections[toc_symndx];
14072 r_symndx < symtab_hdr->sh_info;
14074 if (local_sections[r_symndx] == sec)
14076 if (r_symndx >= symtab_hdr->sh_info)
14077 r_symndx = STN_UNDEF;
14078 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14079 if (r_symndx != STN_UNDEF)
14080 rel->r_addend -= (local_syms[r_symndx].st_value
14081 + sec->output_offset
14082 + sec->output_section->vma);
14084 r_type = R_PPC64_TPREL16_LO;
14085 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14086 rel->r_offset = offset + d_offset;
14087 /* Zap the reloc on the _tls_get_addr call too. */
14088 BFD_ASSERT (offset == rel[1].r_offset);
14089 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14090 insn2 = 0x38630000; /* addi 3,3,0 */
14091 insn3 = bfd_get_32 (input_bfd,
14092 contents + offset + 4);
14094 || insn3 == CROR_151515 || insn3 == CROR_313131)
14096 rel->r_offset += 4;
14097 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14100 bfd_put_32 (input_bfd, insn2, contents + offset);
14105 case R_PPC64_DTPMOD64:
14106 if (rel + 1 < relend
14107 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
14108 && rel[1].r_offset == rel->r_offset + 8)
14110 if ((tls_mask & TLS_GD) == 0)
14112 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
14113 if ((tls_mask & TLS_TPRELGD) != 0)
14114 r_type = R_PPC64_TPREL64;
14117 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14118 r_type = R_PPC64_NONE;
14120 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14125 if ((tls_mask & TLS_LD) == 0)
14127 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14128 r_type = R_PPC64_NONE;
14129 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14134 case R_PPC64_TPREL64:
14135 if ((tls_mask & TLS_TPREL) == 0)
14137 r_type = R_PPC64_NONE;
14138 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14142 case R_PPC64_ENTRY:
14143 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14144 if (!bfd_link_pic (info)
14145 && !info->traditional_format
14146 && relocation + 0x80008000 <= 0xffffffff)
14148 unsigned int insn1, insn2;
14150 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14151 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14152 if ((insn1 & ~0xfffc) == LD_R2_0R12
14153 && insn2 == ADD_R2_R2_R12)
14155 bfd_put_32 (input_bfd,
14156 LIS_R2 + PPC_HA (relocation),
14157 contents + rel->r_offset);
14158 bfd_put_32 (input_bfd,
14159 ADDI_R2_R2 + PPC_LO (relocation),
14160 contents + rel->r_offset + 4);
14165 relocation -= (rel->r_offset
14166 + input_section->output_offset
14167 + input_section->output_section->vma);
14168 if (relocation + 0x80008000 <= 0xffffffff)
14170 unsigned int insn1, insn2;
14172 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14173 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14174 if ((insn1 & ~0xfffc) == LD_R2_0R12
14175 && insn2 == ADD_R2_R2_R12)
14177 bfd_put_32 (input_bfd,
14178 ADDIS_R2_R12 + PPC_HA (relocation),
14179 contents + rel->r_offset);
14180 bfd_put_32 (input_bfd,
14181 ADDI_R2_R2 + PPC_LO (relocation),
14182 contents + rel->r_offset + 4);
14188 case R_PPC64_REL16_HA:
14189 /* If we are generating a non-PIC executable, edit
14190 . 0: addis 2,12,.TOC.-0b@ha
14191 . addi 2,2,.TOC.-0b@l
14192 used by ELFv2 global entry points to set up r2, to
14195 if .TOC. is in range. */
14196 if (!bfd_link_pic (info)
14197 && !info->traditional_format
14199 && rel->r_addend == d_offset
14200 && h != NULL && &h->elf == htab->elf.hgot
14201 && rel + 1 < relend
14202 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14203 && rel[1].r_offset == rel->r_offset + 4
14204 && rel[1].r_addend == rel->r_addend + 4
14205 && relocation + 0x80008000 <= 0xffffffff)
14207 unsigned int insn1, insn2;
14208 bfd_vma offset = rel->r_offset - d_offset;
14209 insn1 = bfd_get_32 (input_bfd, contents + offset);
14210 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14211 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14212 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14214 r_type = R_PPC64_ADDR16_HA;
14215 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14216 rel->r_addend -= d_offset;
14217 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14218 rel[1].r_addend -= d_offset + 4;
14219 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14225 /* Handle other relocations that tweak non-addend part of insn. */
14227 max_br_offset = 1 << 25;
14228 addend = rel->r_addend;
14229 reloc_dest = DEST_NORMAL;
14235 case R_PPC64_TOCSAVE:
14236 if (relocation + addend == (rel->r_offset
14237 + input_section->output_offset
14238 + input_section->output_section->vma)
14239 && tocsave_find (htab, NO_INSERT,
14240 &local_syms, rel, input_bfd))
14242 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14244 || insn == CROR_151515 || insn == CROR_313131)
14245 bfd_put_32 (input_bfd,
14246 STD_R2_0R1 + STK_TOC (htab),
14247 contents + rel->r_offset);
14251 /* Branch taken prediction relocations. */
14252 case R_PPC64_ADDR14_BRTAKEN:
14253 case R_PPC64_REL14_BRTAKEN:
14254 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14255 /* Fall through. */
14257 /* Branch not taken prediction relocations. */
14258 case R_PPC64_ADDR14_BRNTAKEN:
14259 case R_PPC64_REL14_BRNTAKEN:
14260 insn |= bfd_get_32 (input_bfd,
14261 contents + rel->r_offset) & ~(0x01 << 21);
14262 /* Fall through. */
14264 case R_PPC64_REL14:
14265 max_br_offset = 1 << 15;
14266 /* Fall through. */
14268 case R_PPC64_REL24:
14269 /* Calls to functions with a different TOC, such as calls to
14270 shared objects, need to alter the TOC pointer. This is
14271 done using a linkage stub. A REL24 branching to these
14272 linkage stubs needs to be followed by a nop, as the nop
14273 will be replaced with an instruction to restore the TOC
14278 && h->oh->is_func_descriptor)
14279 fdh = ppc_follow_link (h->oh);
14280 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14282 if (stub_entry != NULL
14283 && (stub_entry->stub_type == ppc_stub_plt_call
14284 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14285 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14286 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14288 bfd_boolean can_plt_call = FALSE;
14290 if (stub_entry->stub_type == ppc_stub_plt_call
14292 && htab->params->plt_localentry0 != 0
14293 && is_elfv2_localentry0 (&h->elf))
14295 /* The function doesn't use or change r2. */
14296 can_plt_call = TRUE;
14299 /* All of these stubs may modify r2, so there must be a
14300 branch and link followed by a nop. The nop is
14301 replaced by an insn to restore r2. */
14302 else if (rel->r_offset + 8 <= input_section->size)
14306 br = bfd_get_32 (input_bfd,
14307 contents + rel->r_offset);
14312 nop = bfd_get_32 (input_bfd,
14313 contents + rel->r_offset + 4);
14315 || nop == CROR_151515 || nop == CROR_313131)
14318 && (h == htab->tls_get_addr_fd
14319 || h == htab->tls_get_addr)
14320 && htab->params->tls_get_addr_opt)
14322 /* Special stub used, leave nop alone. */
14325 bfd_put_32 (input_bfd,
14326 LD_R2_0R1 + STK_TOC (htab),
14327 contents + rel->r_offset + 4);
14328 can_plt_call = TRUE;
14333 if (!can_plt_call && h != NULL)
14335 const char *name = h->elf.root.root.string;
14340 if (strncmp (name, "__libc_start_main", 17) == 0
14341 && (name[17] == 0 || name[17] == '@'))
14343 /* Allow crt1 branch to go via a toc adjusting
14344 stub. Other calls that never return could do
14345 the same, if we could detect such. */
14346 can_plt_call = TRUE;
14352 /* g++ as of 20130507 emits self-calls without a
14353 following nop. This is arguably wrong since we
14354 have conflicting information. On the one hand a
14355 global symbol and on the other a local call
14356 sequence, but don't error for this special case.
14357 It isn't possible to cheaply verify we have
14358 exactly such a call. Allow all calls to the same
14360 asection *code_sec = sec;
14362 if (get_opd_info (sec) != NULL)
14364 bfd_vma off = (relocation + addend
14365 - sec->output_section->vma
14366 - sec->output_offset);
14368 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14370 if (code_sec == input_section)
14371 can_plt_call = TRUE;
14376 if (stub_entry->stub_type == ppc_stub_plt_call
14377 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14378 info->callbacks->einfo
14379 /* xgettext:c-format */
14380 (_("%H: call to `%T' lacks nop, can't restore toc; "
14381 "recompile with -fPIC\n"),
14382 input_bfd, input_section, rel->r_offset, sym_name);
14384 info->callbacks->einfo
14385 /* xgettext:c-format */
14386 (_("%H: call to `%T' lacks nop, can't restore toc; "
14387 "(-mcmodel=small toc adjust stub)\n"),
14388 input_bfd, input_section, rel->r_offset, sym_name);
14390 bfd_set_error (bfd_error_bad_value);
14395 && (stub_entry->stub_type == ppc_stub_plt_call
14396 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14397 unresolved_reloc = FALSE;
14400 if ((stub_entry == NULL
14401 || stub_entry->stub_type == ppc_stub_long_branch
14402 || stub_entry->stub_type == ppc_stub_plt_branch)
14403 && get_opd_info (sec) != NULL)
14405 /* The branch destination is the value of the opd entry. */
14406 bfd_vma off = (relocation + addend
14407 - sec->output_section->vma
14408 - sec->output_offset);
14409 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14410 if (dest != (bfd_vma) -1)
14414 reloc_dest = DEST_OPD;
14418 /* If the branch is out of reach we ought to have a long
14420 from = (rel->r_offset
14421 + input_section->output_offset
14422 + input_section->output_section->vma);
14424 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14428 if (stub_entry != NULL
14429 && (stub_entry->stub_type == ppc_stub_long_branch
14430 || stub_entry->stub_type == ppc_stub_plt_branch)
14431 && (r_type == R_PPC64_ADDR14_BRTAKEN
14432 || r_type == R_PPC64_ADDR14_BRNTAKEN
14433 || (relocation + addend - from + max_br_offset
14434 < 2 * max_br_offset)))
14435 /* Don't use the stub if this branch is in range. */
14438 if (stub_entry != NULL)
14440 /* Munge up the value and addend so that we call the stub
14441 rather than the procedure directly. */
14442 asection *stub_sec = stub_entry->group->stub_sec;
14444 if (stub_entry->stub_type == ppc_stub_save_res)
14445 relocation += (stub_sec->output_offset
14446 + stub_sec->output_section->vma
14447 + stub_sec->size - htab->sfpr->size
14448 - htab->sfpr->output_offset
14449 - htab->sfpr->output_section->vma);
14451 relocation = (stub_entry->stub_offset
14452 + stub_sec->output_offset
14453 + stub_sec->output_section->vma);
14455 reloc_dest = DEST_STUB;
14457 if ((stub_entry->stub_type == ppc_stub_plt_call
14458 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14459 && (ALWAYS_EMIT_R2SAVE
14460 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14461 && rel + 1 < relend
14462 && rel[1].r_offset == rel->r_offset + 4
14463 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14471 /* Set 'a' bit. This is 0b00010 in BO field for branch
14472 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14473 for branch on CTR insns (BO == 1a00t or 1a01t). */
14474 if ((insn & (0x14 << 21)) == (0x04 << 21))
14475 insn |= 0x02 << 21;
14476 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14477 insn |= 0x08 << 21;
14483 /* Invert 'y' bit if not the default. */
14484 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14485 insn ^= 0x01 << 21;
14488 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14491 /* NOP out calls to undefined weak functions.
14492 We can thus call a weak function without first
14493 checking whether the function is defined. */
14495 && h->elf.root.type == bfd_link_hash_undefweak
14496 && h->elf.dynindx == -1
14497 && r_type == R_PPC64_REL24
14501 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14507 /* Set `addend'. */
14512 info->callbacks->einfo
14513 /* xgettext:c-format */
14514 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14515 input_bfd, (int) r_type, sym_name);
14517 bfd_set_error (bfd_error_bad_value);
14523 case R_PPC64_TLSGD:
14524 case R_PPC64_TLSLD:
14525 case R_PPC64_TOCSAVE:
14526 case R_PPC64_GNU_VTINHERIT:
14527 case R_PPC64_GNU_VTENTRY:
14528 case R_PPC64_ENTRY:
14531 /* GOT16 relocations. Like an ADDR16 using the symbol's
14532 address in the GOT as relocation value instead of the
14533 symbol's value itself. Also, create a GOT entry for the
14534 symbol and put the symbol value there. */
14535 case R_PPC64_GOT_TLSGD16:
14536 case R_PPC64_GOT_TLSGD16_LO:
14537 case R_PPC64_GOT_TLSGD16_HI:
14538 case R_PPC64_GOT_TLSGD16_HA:
14539 tls_type = TLS_TLS | TLS_GD;
14542 case R_PPC64_GOT_TLSLD16:
14543 case R_PPC64_GOT_TLSLD16_LO:
14544 case R_PPC64_GOT_TLSLD16_HI:
14545 case R_PPC64_GOT_TLSLD16_HA:
14546 tls_type = TLS_TLS | TLS_LD;
14549 case R_PPC64_GOT_TPREL16_DS:
14550 case R_PPC64_GOT_TPREL16_LO_DS:
14551 case R_PPC64_GOT_TPREL16_HI:
14552 case R_PPC64_GOT_TPREL16_HA:
14553 tls_type = TLS_TLS | TLS_TPREL;
14556 case R_PPC64_GOT_DTPREL16_DS:
14557 case R_PPC64_GOT_DTPREL16_LO_DS:
14558 case R_PPC64_GOT_DTPREL16_HI:
14559 case R_PPC64_GOT_DTPREL16_HA:
14560 tls_type = TLS_TLS | TLS_DTPREL;
14563 case R_PPC64_GOT16:
14564 case R_PPC64_GOT16_LO:
14565 case R_PPC64_GOT16_HI:
14566 case R_PPC64_GOT16_HA:
14567 case R_PPC64_GOT16_DS:
14568 case R_PPC64_GOT16_LO_DS:
14571 /* Relocation is to the entry for this symbol in the global
14576 unsigned long indx = 0;
14577 struct got_entry *ent;
14579 if (tls_type == (TLS_TLS | TLS_LD)
14581 || !h->elf.def_dynamic))
14582 ent = ppc64_tlsld_got (input_bfd);
14587 if (!htab->elf.dynamic_sections_created
14588 || h->elf.dynindx == -1
14589 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14590 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14591 /* This is actually a static link, or it is a
14592 -Bsymbolic link and the symbol is defined
14593 locally, or the symbol was forced to be local
14594 because of a version file. */
14598 indx = h->elf.dynindx;
14599 unresolved_reloc = FALSE;
14601 ent = h->elf.got.glist;
14605 if (local_got_ents == NULL)
14607 ent = local_got_ents[r_symndx];
14610 for (; ent != NULL; ent = ent->next)
14611 if (ent->addend == orig_rel.r_addend
14612 && ent->owner == input_bfd
14613 && ent->tls_type == tls_type)
14619 if (ent->is_indirect)
14620 ent = ent->got.ent;
14621 offp = &ent->got.offset;
14622 got = ppc64_elf_tdata (ent->owner)->got;
14626 /* The offset must always be a multiple of 8. We use the
14627 least significant bit to record whether we have already
14628 processed this entry. */
14630 if ((off & 1) != 0)
14634 /* Generate relocs for the dynamic linker, except in
14635 the case of TLSLD where we'll use one entry per
14643 ? h->elf.type == STT_GNU_IFUNC
14644 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14647 relgot = htab->elf.irelplt;
14649 htab->local_ifunc_resolver = 1;
14650 else if (is_static_defined (&h->elf))
14651 htab->maybe_local_ifunc_resolver = 1;
14654 || (bfd_link_pic (info)
14656 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14657 || (tls_type == (TLS_TLS | TLS_LD)
14658 && !h->elf.def_dynamic))))
14659 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14660 if (relgot != NULL)
14662 outrel.r_offset = (got->output_section->vma
14663 + got->output_offset
14665 outrel.r_addend = addend;
14666 if (tls_type & (TLS_LD | TLS_GD))
14668 outrel.r_addend = 0;
14669 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14670 if (tls_type == (TLS_TLS | TLS_GD))
14672 loc = relgot->contents;
14673 loc += (relgot->reloc_count++
14674 * sizeof (Elf64_External_Rela));
14675 bfd_elf64_swap_reloca_out (output_bfd,
14677 outrel.r_offset += 8;
14678 outrel.r_addend = addend;
14680 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14683 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14684 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14685 else if (tls_type == (TLS_TLS | TLS_TPREL))
14686 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14687 else if (indx != 0)
14688 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14692 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14694 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14696 /* Write the .got section contents for the sake
14698 loc = got->contents + off;
14699 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14703 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14705 outrel.r_addend += relocation;
14706 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14708 if (htab->elf.tls_sec == NULL)
14709 outrel.r_addend = 0;
14711 outrel.r_addend -= htab->elf.tls_sec->vma;
14714 loc = relgot->contents;
14715 loc += (relgot->reloc_count++
14716 * sizeof (Elf64_External_Rela));
14717 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14720 /* Init the .got section contents here if we're not
14721 emitting a reloc. */
14724 relocation += addend;
14727 if (htab->elf.tls_sec == NULL)
14731 if (tls_type & TLS_LD)
14734 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14735 if (tls_type & TLS_TPREL)
14736 relocation += DTP_OFFSET - TP_OFFSET;
14739 if (tls_type & (TLS_GD | TLS_LD))
14741 bfd_put_64 (output_bfd, relocation,
14742 got->contents + off + 8);
14746 bfd_put_64 (output_bfd, relocation,
14747 got->contents + off);
14751 if (off >= (bfd_vma) -2)
14754 relocation = got->output_section->vma + got->output_offset + off;
14755 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14759 case R_PPC64_PLT16_HA:
14760 case R_PPC64_PLT16_HI:
14761 case R_PPC64_PLT16_LO:
14762 case R_PPC64_PLT32:
14763 case R_PPC64_PLT64:
14764 /* Relocation is to the entry for this symbol in the
14765 procedure linkage table. */
14767 struct plt_entry **plt_list = NULL;
14769 plt_list = &h->elf.plt.plist;
14770 else if (local_got_ents != NULL)
14772 struct plt_entry **local_plt = (struct plt_entry **)
14773 (local_got_ents + symtab_hdr->sh_info);
14774 unsigned char *local_got_tls_masks = (unsigned char *)
14775 (local_plt + symtab_hdr->sh_info);
14776 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14777 plt_list = local_plt + r_symndx;
14781 struct plt_entry *ent;
14783 for (ent = *plt_list; ent != NULL; ent = ent->next)
14784 if (ent->plt.offset != (bfd_vma) -1
14785 && ent->addend == orig_rel.r_addend)
14789 plt = htab->elf.splt;
14790 if (!htab->elf.dynamic_sections_created
14792 || h->elf.dynindx == -1)
14793 plt = htab->elf.iplt;
14794 relocation = (plt->output_section->vma
14795 + plt->output_offset
14796 + ent->plt.offset);
14798 unresolved_reloc = FALSE;
14806 /* Relocation value is TOC base. */
14807 relocation = TOCstart;
14808 if (r_symndx == STN_UNDEF)
14809 relocation += htab->sec_info[input_section->id].toc_off;
14810 else if (unresolved_reloc)
14812 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14813 relocation += htab->sec_info[sec->id].toc_off;
14815 unresolved_reloc = TRUE;
14818 /* TOC16 relocs. We want the offset relative to the TOC base,
14819 which is the address of the start of the TOC plus 0x8000.
14820 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14822 case R_PPC64_TOC16:
14823 case R_PPC64_TOC16_LO:
14824 case R_PPC64_TOC16_HI:
14825 case R_PPC64_TOC16_DS:
14826 case R_PPC64_TOC16_LO_DS:
14827 case R_PPC64_TOC16_HA:
14828 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14831 /* Relocate against the beginning of the section. */
14832 case R_PPC64_SECTOFF:
14833 case R_PPC64_SECTOFF_LO:
14834 case R_PPC64_SECTOFF_HI:
14835 case R_PPC64_SECTOFF_DS:
14836 case R_PPC64_SECTOFF_LO_DS:
14837 case R_PPC64_SECTOFF_HA:
14839 addend -= sec->output_section->vma;
14842 case R_PPC64_REL16:
14843 case R_PPC64_REL16_LO:
14844 case R_PPC64_REL16_HI:
14845 case R_PPC64_REL16_HA:
14846 case R_PPC64_REL16DX_HA:
14849 case R_PPC64_REL14:
14850 case R_PPC64_REL14_BRNTAKEN:
14851 case R_PPC64_REL14_BRTAKEN:
14852 case R_PPC64_REL24:
14855 case R_PPC64_TPREL16:
14856 case R_PPC64_TPREL16_LO:
14857 case R_PPC64_TPREL16_HI:
14858 case R_PPC64_TPREL16_HA:
14859 case R_PPC64_TPREL16_DS:
14860 case R_PPC64_TPREL16_LO_DS:
14861 case R_PPC64_TPREL16_HIGH:
14862 case R_PPC64_TPREL16_HIGHA:
14863 case R_PPC64_TPREL16_HIGHER:
14864 case R_PPC64_TPREL16_HIGHERA:
14865 case R_PPC64_TPREL16_HIGHEST:
14866 case R_PPC64_TPREL16_HIGHESTA:
14868 && h->elf.root.type == bfd_link_hash_undefweak
14869 && h->elf.dynindx == -1)
14871 /* Make this relocation against an undefined weak symbol
14872 resolve to zero. This is really just a tweak, since
14873 code using weak externs ought to check that they are
14874 defined before using them. */
14875 bfd_byte *p = contents + rel->r_offset - d_offset;
14877 insn = bfd_get_32 (input_bfd, p);
14878 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14880 bfd_put_32 (input_bfd, insn, p);
14883 if (htab->elf.tls_sec != NULL)
14884 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14885 if (bfd_link_pic (info))
14886 /* The TPREL16 relocs shouldn't really be used in shared
14887 libs as they will result in DT_TEXTREL being set, but
14888 support them anyway. */
14892 case R_PPC64_DTPREL16:
14893 case R_PPC64_DTPREL16_LO:
14894 case R_PPC64_DTPREL16_HI:
14895 case R_PPC64_DTPREL16_HA:
14896 case R_PPC64_DTPREL16_DS:
14897 case R_PPC64_DTPREL16_LO_DS:
14898 case R_PPC64_DTPREL16_HIGH:
14899 case R_PPC64_DTPREL16_HIGHA:
14900 case R_PPC64_DTPREL16_HIGHER:
14901 case R_PPC64_DTPREL16_HIGHERA:
14902 case R_PPC64_DTPREL16_HIGHEST:
14903 case R_PPC64_DTPREL16_HIGHESTA:
14904 if (htab->elf.tls_sec != NULL)
14905 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14908 case R_PPC64_ADDR64_LOCAL:
14909 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14914 case R_PPC64_DTPMOD64:
14919 case R_PPC64_TPREL64:
14920 if (htab->elf.tls_sec != NULL)
14921 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14924 case R_PPC64_DTPREL64:
14925 if (htab->elf.tls_sec != NULL)
14926 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14927 /* Fall through. */
14929 /* Relocations that may need to be propagated if this is a
14931 case R_PPC64_REL30:
14932 case R_PPC64_REL32:
14933 case R_PPC64_REL64:
14934 case R_PPC64_ADDR14:
14935 case R_PPC64_ADDR14_BRNTAKEN:
14936 case R_PPC64_ADDR14_BRTAKEN:
14937 case R_PPC64_ADDR16:
14938 case R_PPC64_ADDR16_DS:
14939 case R_PPC64_ADDR16_HA:
14940 case R_PPC64_ADDR16_HI:
14941 case R_PPC64_ADDR16_HIGH:
14942 case R_PPC64_ADDR16_HIGHA:
14943 case R_PPC64_ADDR16_HIGHER:
14944 case R_PPC64_ADDR16_HIGHERA:
14945 case R_PPC64_ADDR16_HIGHEST:
14946 case R_PPC64_ADDR16_HIGHESTA:
14947 case R_PPC64_ADDR16_LO:
14948 case R_PPC64_ADDR16_LO_DS:
14949 case R_PPC64_ADDR24:
14950 case R_PPC64_ADDR32:
14951 case R_PPC64_ADDR64:
14952 case R_PPC64_UADDR16:
14953 case R_PPC64_UADDR32:
14954 case R_PPC64_UADDR64:
14956 if ((input_section->flags & SEC_ALLOC) == 0)
14959 if (NO_OPD_RELOCS && is_opd)
14962 if (bfd_link_pic (info)
14964 || h->dyn_relocs != NULL)
14965 && ((h != NULL && pc_dynrelocs (h))
14966 || must_be_dyn_reloc (info, r_type)))
14968 ? h->dyn_relocs != NULL
14969 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14971 bfd_boolean skip, relocate;
14976 /* When generating a dynamic object, these relocations
14977 are copied into the output file to be resolved at run
14983 out_off = _bfd_elf_section_offset (output_bfd, info,
14984 input_section, rel->r_offset);
14985 if (out_off == (bfd_vma) -1)
14987 else if (out_off == (bfd_vma) -2)
14988 skip = TRUE, relocate = TRUE;
14989 out_off += (input_section->output_section->vma
14990 + input_section->output_offset);
14991 outrel.r_offset = out_off;
14992 outrel.r_addend = rel->r_addend;
14994 /* Optimize unaligned reloc use. */
14995 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14996 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14997 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14998 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14999 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
15000 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
15001 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
15002 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
15003 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
15006 memset (&outrel, 0, sizeof outrel);
15007 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
15009 && r_type != R_PPC64_TOC)
15011 indx = h->elf.dynindx;
15012 BFD_ASSERT (indx != -1);
15013 outrel.r_info = ELF64_R_INFO (indx, r_type);
15017 /* This symbol is local, or marked to become local,
15018 or this is an opd section reloc which must point
15019 at a local function. */
15020 outrel.r_addend += relocation;
15021 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
15023 if (is_opd && h != NULL)
15025 /* Lie about opd entries. This case occurs
15026 when building shared libraries and we
15027 reference a function in another shared
15028 lib. The same thing happens for a weak
15029 definition in an application that's
15030 overridden by a strong definition in a
15031 shared lib. (I believe this is a generic
15032 bug in binutils handling of weak syms.)
15033 In these cases we won't use the opd
15034 entry in this lib. */
15035 unresolved_reloc = FALSE;
15038 && r_type == R_PPC64_ADDR64
15040 ? h->elf.type == STT_GNU_IFUNC
15041 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
15042 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15045 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
15047 /* We need to relocate .opd contents for ld.so.
15048 Prelink also wants simple and consistent rules
15049 for relocs. This make all RELATIVE relocs have
15050 *r_offset equal to r_addend. */
15057 ? h->elf.type == STT_GNU_IFUNC
15058 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15060 info->callbacks->einfo
15061 /* xgettext:c-format */
15062 (_("%H: %s for indirect "
15063 "function `%T' unsupported\n"),
15064 input_bfd, input_section, rel->r_offset,
15065 ppc64_elf_howto_table[r_type]->name,
15069 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
15071 else if (sec == NULL || sec->owner == NULL)
15073 bfd_set_error (bfd_error_bad_value);
15080 osec = sec->output_section;
15081 indx = elf_section_data (osec)->dynindx;
15085 if ((osec->flags & SEC_READONLY) == 0
15086 && htab->elf.data_index_section != NULL)
15087 osec = htab->elf.data_index_section;
15089 osec = htab->elf.text_index_section;
15090 indx = elf_section_data (osec)->dynindx;
15092 BFD_ASSERT (indx != 0);
15094 /* We are turning this relocation into one
15095 against a section symbol, so subtract out
15096 the output section's address but not the
15097 offset of the input section in the output
15099 outrel.r_addend -= osec->vma;
15102 outrel.r_info = ELF64_R_INFO (indx, r_type);
15106 sreloc = elf_section_data (input_section)->sreloc;
15108 ? h->elf.type == STT_GNU_IFUNC
15109 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15111 sreloc = htab->elf.irelplt;
15113 htab->local_ifunc_resolver = 1;
15114 else if (is_static_defined (&h->elf))
15115 htab->maybe_local_ifunc_resolver = 1;
15117 if (sreloc == NULL)
15120 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
15123 loc = sreloc->contents;
15124 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
15125 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15127 /* If this reloc is against an external symbol, it will
15128 be computed at runtime, so there's no need to do
15129 anything now. However, for the sake of prelink ensure
15130 that the section contents are a known value. */
15133 unresolved_reloc = FALSE;
15134 /* The value chosen here is quite arbitrary as ld.so
15135 ignores section contents except for the special
15136 case of .opd where the contents might be accessed
15137 before relocation. Choose zero, as that won't
15138 cause reloc overflow. */
15141 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15142 to improve backward compatibility with older
15144 if (r_type == R_PPC64_ADDR64)
15145 addend = outrel.r_addend;
15146 /* Adjust pc_relative relocs to have zero in *r_offset. */
15147 else if (ppc64_elf_howto_table[r_type]->pc_relative)
15148 addend = outrel.r_offset;
15154 case R_PPC64_GLOB_DAT:
15155 case R_PPC64_JMP_SLOT:
15156 case R_PPC64_JMP_IREL:
15157 case R_PPC64_RELATIVE:
15158 /* We shouldn't ever see these dynamic relocs in relocatable
15160 /* Fall through. */
15162 case R_PPC64_PLTGOT16:
15163 case R_PPC64_PLTGOT16_DS:
15164 case R_PPC64_PLTGOT16_HA:
15165 case R_PPC64_PLTGOT16_HI:
15166 case R_PPC64_PLTGOT16_LO:
15167 case R_PPC64_PLTGOT16_LO_DS:
15168 case R_PPC64_PLTREL32:
15169 case R_PPC64_PLTREL64:
15170 /* These ones haven't been implemented yet. */
15172 info->callbacks->einfo
15173 /* xgettext:c-format */
15174 (_("%P: %B: %s is not supported for `%T'\n"),
15176 ppc64_elf_howto_table[r_type]->name, sym_name);
15178 bfd_set_error (bfd_error_invalid_operation);
15183 /* Multi-instruction sequences that access the TOC can be
15184 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15185 to nop; addi rb,r2,x; */
15191 case R_PPC64_GOT_TLSLD16_HI:
15192 case R_PPC64_GOT_TLSGD16_HI:
15193 case R_PPC64_GOT_TPREL16_HI:
15194 case R_PPC64_GOT_DTPREL16_HI:
15195 case R_PPC64_GOT16_HI:
15196 case R_PPC64_TOC16_HI:
15197 /* These relocs would only be useful if building up an
15198 offset to later add to r2, perhaps in an indexed
15199 addressing mode instruction. Don't try to optimize.
15200 Unfortunately, the possibility of someone building up an
15201 offset like this or even with the HA relocs, means that
15202 we need to check the high insn when optimizing the low
15206 case R_PPC64_GOT_TLSLD16_HA:
15207 case R_PPC64_GOT_TLSGD16_HA:
15208 case R_PPC64_GOT_TPREL16_HA:
15209 case R_PPC64_GOT_DTPREL16_HA:
15210 case R_PPC64_GOT16_HA:
15211 case R_PPC64_TOC16_HA:
15212 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15213 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15215 bfd_byte *p = contents + (rel->r_offset & ~3);
15216 bfd_put_32 (input_bfd, NOP, p);
15220 case R_PPC64_GOT_TLSLD16_LO:
15221 case R_PPC64_GOT_TLSGD16_LO:
15222 case R_PPC64_GOT_TPREL16_LO_DS:
15223 case R_PPC64_GOT_DTPREL16_LO_DS:
15224 case R_PPC64_GOT16_LO:
15225 case R_PPC64_GOT16_LO_DS:
15226 case R_PPC64_TOC16_LO:
15227 case R_PPC64_TOC16_LO_DS:
15228 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15229 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15231 bfd_byte *p = contents + (rel->r_offset & ~3);
15232 insn = bfd_get_32 (input_bfd, p);
15233 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15235 /* Transform addic to addi when we change reg. */
15236 insn &= ~((0x3f << 26) | (0x1f << 16));
15237 insn |= (14u << 26) | (2 << 16);
15241 insn &= ~(0x1f << 16);
15244 bfd_put_32 (input_bfd, insn, p);
15249 /* Do any further special processing. */
15250 howto = ppc64_elf_howto_table[(int) r_type];
15256 case R_PPC64_REL16_HA:
15257 case R_PPC64_REL16DX_HA:
15258 case R_PPC64_ADDR16_HA:
15259 case R_PPC64_ADDR16_HIGHA:
15260 case R_PPC64_ADDR16_HIGHERA:
15261 case R_PPC64_ADDR16_HIGHESTA:
15262 case R_PPC64_TOC16_HA:
15263 case R_PPC64_SECTOFF_HA:
15264 case R_PPC64_TPREL16_HA:
15265 case R_PPC64_TPREL16_HIGHA:
15266 case R_PPC64_TPREL16_HIGHERA:
15267 case R_PPC64_TPREL16_HIGHESTA:
15268 case R_PPC64_DTPREL16_HA:
15269 case R_PPC64_DTPREL16_HIGHA:
15270 case R_PPC64_DTPREL16_HIGHERA:
15271 case R_PPC64_DTPREL16_HIGHESTA:
15272 /* It's just possible that this symbol is a weak symbol
15273 that's not actually defined anywhere. In that case,
15274 'sec' would be NULL, and we should leave the symbol
15275 alone (it will be set to zero elsewhere in the link). */
15278 /* Fall through. */
15280 case R_PPC64_GOT16_HA:
15281 case R_PPC64_PLTGOT16_HA:
15282 case R_PPC64_PLT16_HA:
15283 case R_PPC64_GOT_TLSGD16_HA:
15284 case R_PPC64_GOT_TLSLD16_HA:
15285 case R_PPC64_GOT_TPREL16_HA:
15286 case R_PPC64_GOT_DTPREL16_HA:
15287 /* Add 0x10000 if sign bit in 0:15 is set.
15288 Bits 0:15 are not used. */
15292 case R_PPC64_ADDR16_DS:
15293 case R_PPC64_ADDR16_LO_DS:
15294 case R_PPC64_GOT16_DS:
15295 case R_PPC64_GOT16_LO_DS:
15296 case R_PPC64_PLT16_LO_DS:
15297 case R_PPC64_SECTOFF_DS:
15298 case R_PPC64_SECTOFF_LO_DS:
15299 case R_PPC64_TOC16_DS:
15300 case R_PPC64_TOC16_LO_DS:
15301 case R_PPC64_PLTGOT16_DS:
15302 case R_PPC64_PLTGOT16_LO_DS:
15303 case R_PPC64_GOT_TPREL16_DS:
15304 case R_PPC64_GOT_TPREL16_LO_DS:
15305 case R_PPC64_GOT_DTPREL16_DS:
15306 case R_PPC64_GOT_DTPREL16_LO_DS:
15307 case R_PPC64_TPREL16_DS:
15308 case R_PPC64_TPREL16_LO_DS:
15309 case R_PPC64_DTPREL16_DS:
15310 case R_PPC64_DTPREL16_LO_DS:
15311 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15313 /* If this reloc is against an lq, lxv, or stxv insn, then
15314 the value must be a multiple of 16. This is somewhat of
15315 a hack, but the "correct" way to do this by defining _DQ
15316 forms of all the _DS relocs bloats all reloc switches in
15317 this file. It doesn't make much sense to use these
15318 relocs in data, so testing the insn should be safe. */
15319 if ((insn & (0x3f << 26)) == (56u << 26)
15320 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15322 relocation += addend;
15323 addend = insn & (mask ^ 3);
15324 if ((relocation & mask) != 0)
15326 relocation ^= relocation & mask;
15327 info->callbacks->einfo
15328 /* xgettext:c-format */
15329 (_("%H: error: %s not a multiple of %u\n"),
15330 input_bfd, input_section, rel->r_offset,
15333 bfd_set_error (bfd_error_bad_value);
15340 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15341 because such sections are not SEC_ALLOC and thus ld.so will
15342 not process them. */
15343 if (unresolved_reloc
15344 && !((input_section->flags & SEC_DEBUGGING) != 0
15345 && h->elf.def_dynamic)
15346 && _bfd_elf_section_offset (output_bfd, info, input_section,
15347 rel->r_offset) != (bfd_vma) -1)
15349 info->callbacks->einfo
15350 /* xgettext:c-format */
15351 (_("%H: unresolvable %s against `%T'\n"),
15352 input_bfd, input_section, rel->r_offset,
15354 h->elf.root.root.string);
15358 /* 16-bit fields in insns mostly have signed values, but a
15359 few insns have 16-bit unsigned values. Really, we should
15360 have different reloc types. */
15361 if (howto->complain_on_overflow != complain_overflow_dont
15362 && howto->dst_mask == 0xffff
15363 && (input_section->flags & SEC_CODE) != 0)
15365 enum complain_overflow complain = complain_overflow_signed;
15367 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15368 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15369 complain = complain_overflow_bitfield;
15370 else if (howto->rightshift == 0
15371 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15372 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15373 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15374 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15375 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15376 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15377 complain = complain_overflow_unsigned;
15378 if (howto->complain_on_overflow != complain)
15380 alt_howto = *howto;
15381 alt_howto.complain_on_overflow = complain;
15382 howto = &alt_howto;
15386 if (r_type == R_PPC64_REL16DX_HA)
15388 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15389 if (rel->r_offset + 4 > input_section->size)
15390 r = bfd_reloc_outofrange;
15393 relocation += addend;
15394 relocation -= (rel->r_offset
15395 + input_section->output_offset
15396 + input_section->output_section->vma);
15397 relocation = (bfd_signed_vma) relocation >> 16;
15398 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15400 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15401 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15403 if (relocation + 0x8000 > 0xffff)
15404 r = bfd_reloc_overflow;
15408 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15409 rel->r_offset, relocation, addend);
15411 if (r != bfd_reloc_ok)
15413 char *more_info = NULL;
15414 const char *reloc_name = howto->name;
15416 if (reloc_dest != DEST_NORMAL)
15418 more_info = bfd_malloc (strlen (reloc_name) + 8);
15419 if (more_info != NULL)
15421 strcpy (more_info, reloc_name);
15422 strcat (more_info, (reloc_dest == DEST_OPD
15423 ? " (OPD)" : " (stub)"));
15424 reloc_name = more_info;
15428 if (r == bfd_reloc_overflow)
15430 /* On code like "if (foo) foo();" don't report overflow
15431 on a branch to zero when foo is undefined. */
15433 && (reloc_dest == DEST_STUB
15435 && (h->elf.root.type == bfd_link_hash_undefweak
15436 || h->elf.root.type == bfd_link_hash_undefined)
15437 && is_branch_reloc (r_type))))
15438 info->callbacks->reloc_overflow (info, &h->elf.root,
15439 sym_name, reloc_name,
15441 input_bfd, input_section,
15446 info->callbacks->einfo
15447 /* xgettext:c-format */
15448 (_("%H: %s against `%T': error %d\n"),
15449 input_bfd, input_section, rel->r_offset,
15450 reloc_name, sym_name, (int) r);
15453 if (more_info != NULL)
15463 Elf_Internal_Shdr *rel_hdr;
15464 size_t deleted = rel - wrel;
15466 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15467 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15468 if (rel_hdr->sh_size == 0)
15470 /* It is too late to remove an empty reloc section. Leave
15472 ??? What is wrong with an empty section??? */
15473 rel_hdr->sh_size = rel_hdr->sh_entsize;
15476 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15477 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15478 input_section->reloc_count -= deleted;
15481 /* If we're emitting relocations, then shortly after this function
15482 returns, reloc offsets and addends for this section will be
15483 adjusted. Worse, reloc symbol indices will be for the output
15484 file rather than the input. Save a copy of the relocs for
15485 opd_entry_value. */
15486 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15489 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15490 rel = bfd_alloc (input_bfd, amt);
15491 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15492 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15495 memcpy (rel, relocs, amt);
15500 /* Adjust the value of any local symbols in opd sections. */
15503 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15504 const char *name ATTRIBUTE_UNUSED,
15505 Elf_Internal_Sym *elfsym,
15506 asection *input_sec,
15507 struct elf_link_hash_entry *h)
15509 struct _opd_sec_data *opd;
15516 opd = get_opd_info (input_sec);
15517 if (opd == NULL || opd->adjust == NULL)
15520 value = elfsym->st_value - input_sec->output_offset;
15521 if (!bfd_link_relocatable (info))
15522 value -= input_sec->output_section->vma;
15524 adjust = opd->adjust[OPD_NDX (value)];
15528 elfsym->st_value += adjust;
15532 /* Finish up dynamic symbol handling. We set the contents of various
15533 dynamic sections here. */
15536 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15537 struct bfd_link_info *info,
15538 struct elf_link_hash_entry *h,
15539 Elf_Internal_Sym *sym)
15541 struct ppc_link_hash_table *htab;
15542 struct plt_entry *ent;
15543 Elf_Internal_Rela rela;
15546 htab = ppc_hash_table (info);
15550 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15551 if (ent->plt.offset != (bfd_vma) -1)
15553 /* This symbol has an entry in the procedure linkage
15554 table. Set it up. */
15555 if (!htab->elf.dynamic_sections_created
15556 || h->dynindx == -1)
15558 BFD_ASSERT (h->type == STT_GNU_IFUNC
15560 && (h->root.type == bfd_link_hash_defined
15561 || h->root.type == bfd_link_hash_defweak));
15562 rela.r_offset = (htab->elf.iplt->output_section->vma
15563 + htab->elf.iplt->output_offset
15564 + ent->plt.offset);
15566 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15568 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15569 rela.r_addend = (h->root.u.def.value
15570 + h->root.u.def.section->output_offset
15571 + h->root.u.def.section->output_section->vma
15573 loc = (htab->elf.irelplt->contents
15574 + (htab->elf.irelplt->reloc_count++
15575 * sizeof (Elf64_External_Rela)));
15576 htab->local_ifunc_resolver = 1;
15580 rela.r_offset = (htab->elf.splt->output_section->vma
15581 + htab->elf.splt->output_offset
15582 + ent->plt.offset);
15583 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15584 rela.r_addend = ent->addend;
15585 loc = (htab->elf.srelplt->contents
15586 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15587 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15588 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15589 htab->maybe_local_ifunc_resolver = 1;
15591 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15593 if (!htab->opd_abi)
15595 if (!h->def_regular)
15597 /* Mark the symbol as undefined, rather than as
15598 defined in glink. Leave the value if there were
15599 any relocations where pointer equality matters
15600 (this is a clue for the dynamic linker, to make
15601 function pointer comparisons work between an
15602 application and shared library), otherwise set it
15604 sym->st_shndx = SHN_UNDEF;
15605 if (!h->pointer_equality_needed)
15607 else if (!h->ref_regular_nonweak)
15609 /* This breaks function pointer comparisons, but
15610 that is better than breaking tests for a NULL
15611 function pointer. */
15620 /* This symbol needs a copy reloc. Set it up. */
15623 if (h->dynindx == -1
15624 || (h->root.type != bfd_link_hash_defined
15625 && h->root.type != bfd_link_hash_defweak)
15626 || htab->elf.srelbss == NULL
15627 || htab->elf.sreldynrelro == NULL)
15630 rela.r_offset = (h->root.u.def.value
15631 + h->root.u.def.section->output_section->vma
15632 + h->root.u.def.section->output_offset);
15633 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15635 if (h->root.u.def.section == htab->elf.sdynrelro)
15636 srel = htab->elf.sreldynrelro;
15638 srel = htab->elf.srelbss;
15639 loc = srel->contents;
15640 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15641 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15647 /* Used to decide how to sort relocs in an optimal manner for the
15648 dynamic linker, before writing them out. */
15650 static enum elf_reloc_type_class
15651 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15652 const asection *rel_sec,
15653 const Elf_Internal_Rela *rela)
15655 enum elf_ppc64_reloc_type r_type;
15656 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15658 if (rel_sec == htab->elf.irelplt)
15659 return reloc_class_ifunc;
15661 r_type = ELF64_R_TYPE (rela->r_info);
15664 case R_PPC64_RELATIVE:
15665 return reloc_class_relative;
15666 case R_PPC64_JMP_SLOT:
15667 return reloc_class_plt;
15669 return reloc_class_copy;
15671 return reloc_class_normal;
15675 /* Finish up the dynamic sections. */
15678 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15679 struct bfd_link_info *info)
15681 struct ppc_link_hash_table *htab;
15685 htab = ppc_hash_table (info);
15689 dynobj = htab->elf.dynobj;
15690 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15692 if (htab->elf.dynamic_sections_created)
15694 Elf64_External_Dyn *dyncon, *dynconend;
15696 if (sdyn == NULL || htab->elf.sgot == NULL)
15699 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15700 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15701 for (; dyncon < dynconend; dyncon++)
15703 Elf_Internal_Dyn dyn;
15706 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15713 case DT_PPC64_GLINK:
15715 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15716 /* We stupidly defined DT_PPC64_GLINK to be the start
15717 of glink rather than the first entry point, which is
15718 what ld.so needs, and now have a bigger stub to
15719 support automatic multiple TOCs. */
15720 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15724 s = bfd_get_section_by_name (output_bfd, ".opd");
15727 dyn.d_un.d_ptr = s->vma;
15731 if (htab->do_multi_toc && htab->multi_toc_needed)
15732 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15733 if (htab->has_plt_localentry0)
15734 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15737 case DT_PPC64_OPDSZ:
15738 s = bfd_get_section_by_name (output_bfd, ".opd");
15741 dyn.d_un.d_val = s->size;
15745 s = htab->elf.splt;
15746 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15750 s = htab->elf.srelplt;
15751 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15755 dyn.d_un.d_val = htab->elf.srelplt->size;
15759 if (htab->local_ifunc_resolver)
15760 info->callbacks->einfo
15761 (_("%X%P: text relocations and GNU indirect "
15762 "functions will result in a segfault at runtime\n"));
15763 else if (htab->maybe_local_ifunc_resolver)
15764 info->callbacks->einfo
15765 (_("%P: warning: text relocations and GNU indirect "
15766 "functions may result in a segfault at runtime\n"));
15770 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15774 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15775 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15777 /* Fill in the first entry in the global offset table.
15778 We use it to hold the link-time TOCbase. */
15779 bfd_put_64 (output_bfd,
15780 elf_gp (output_bfd) + TOC_BASE_OFF,
15781 htab->elf.sgot->contents);
15783 /* Set .got entry size. */
15784 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15787 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15788 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15790 /* Set .plt entry size. */
15791 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15792 = PLT_ENTRY_SIZE (htab);
15795 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15796 brlt ourselves if emitrelocations. */
15797 if (htab->brlt != NULL
15798 && htab->brlt->reloc_count != 0
15799 && !_bfd_elf_link_output_relocs (output_bfd,
15801 elf_section_data (htab->brlt)->rela.hdr,
15802 elf_section_data (htab->brlt)->relocs,
15806 if (htab->glink != NULL
15807 && htab->glink->reloc_count != 0
15808 && !_bfd_elf_link_output_relocs (output_bfd,
15810 elf_section_data (htab->glink)->rela.hdr,
15811 elf_section_data (htab->glink)->relocs,
15815 if (htab->glink_eh_frame != NULL
15816 && htab->glink_eh_frame->size != 0)
15820 struct map_stub *group;
15823 p = htab->glink_eh_frame->contents;
15824 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15826 for (group = htab->group; group != NULL; group = group->next)
15827 if (group->stub_sec != NULL)
15829 /* Offset to stub section. */
15830 val = (group->stub_sec->output_section->vma
15831 + group->stub_sec->output_offset);
15832 val -= (htab->glink_eh_frame->output_section->vma
15833 + htab->glink_eh_frame->output_offset
15834 + (p + 8 - htab->glink_eh_frame->contents));
15835 if (val + 0x80000000 > 0xffffffff)
15837 info->callbacks->einfo
15838 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15839 group->stub_sec->name);
15842 bfd_put_32 (dynobj, val, p + 8);
15843 p += stub_eh_frame_size (group, align);
15845 if (htab->glink != NULL && htab->glink->size != 0)
15847 /* Offset to .glink. */
15848 val = (htab->glink->output_section->vma
15849 + htab->glink->output_offset
15851 val -= (htab->glink_eh_frame->output_section->vma
15852 + htab->glink_eh_frame->output_offset
15853 + (p + 8 - htab->glink_eh_frame->contents));
15854 if (val + 0x80000000 > 0xffffffff)
15856 info->callbacks->einfo
15857 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15858 htab->glink->name);
15861 bfd_put_32 (dynobj, val, p + 8);
15862 p += (24 + align - 1) & -align;
15865 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15866 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15867 htab->glink_eh_frame,
15868 htab->glink_eh_frame->contents))
15872 /* We need to handle writing out multiple GOT sections ourselves,
15873 since we didn't add them to DYNOBJ. We know dynobj is the first
15875 while ((dynobj = dynobj->link.next) != NULL)
15879 if (!is_ppc64_elf (dynobj))
15882 s = ppc64_elf_tdata (dynobj)->got;
15885 && s->output_section != bfd_abs_section_ptr
15886 && !bfd_set_section_contents (output_bfd, s->output_section,
15887 s->contents, s->output_offset,
15890 s = ppc64_elf_tdata (dynobj)->relgot;
15893 && s->output_section != bfd_abs_section_ptr
15894 && !bfd_set_section_contents (output_bfd, s->output_section,
15895 s->contents, s->output_offset,
15903 #include "elf64-target.h"
15905 /* FreeBSD support */
15907 #undef TARGET_LITTLE_SYM
15908 #undef TARGET_LITTLE_NAME
15910 #undef TARGET_BIG_SYM
15911 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15912 #undef TARGET_BIG_NAME
15913 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15916 #define ELF_OSABI ELFOSABI_FREEBSD
15919 #define elf64_bed elf64_powerpc_fbsd_bed
15921 #include "elf64-target.h"