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 /* Contexts in which symbol is used in the GOT (or TOC).
4017 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4018 corresponding relocs are encountered during check_relocs.
4019 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4020 indicate the corresponding GOT entry type is not needed.
4021 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4022 a TPREL one. We use a separate flag rather than setting TPREL
4023 just for convenience in distinguishing the two cases. */
4024 #define TLS_GD 1 /* GD reloc. */
4025 #define TLS_LD 2 /* LD reloc. */
4026 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4027 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4028 #define TLS_TLS 16 /* Any TLS reloc. */
4029 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4030 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4031 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4032 unsigned char tls_mask;
4035 /* ppc64 ELF linker hash table. */
4037 struct ppc_link_hash_table
4039 struct elf_link_hash_table elf;
4041 /* The stub hash table. */
4042 struct bfd_hash_table stub_hash_table;
4044 /* Another hash table for plt_branch stubs. */
4045 struct bfd_hash_table branch_hash_table;
4047 /* Hash table for function prologue tocsave. */
4048 htab_t tocsave_htab;
4050 /* Various options and other info passed from the linker. */
4051 struct ppc64_elf_params *params;
4053 /* The size of sec_info below. */
4054 unsigned int sec_info_arr_size;
4056 /* Per-section array of extra section info. Done this way rather
4057 than as part of ppc64_elf_section_data so we have the info for
4058 non-ppc64 sections. */
4061 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4066 /* The section group that this section belongs to. */
4067 struct map_stub *group;
4068 /* A temp section list pointer. */
4073 /* Linked list of groups. */
4074 struct map_stub *group;
4076 /* Temp used when calculating TOC pointers. */
4079 asection *toc_first_sec;
4081 /* Used when adding symbols. */
4082 struct ppc_link_hash_entry *dot_syms;
4084 /* Shortcuts to get to dynamic linker sections. */
4089 asection *glink_eh_frame;
4091 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4092 struct ppc_link_hash_entry *tls_get_addr;
4093 struct ppc_link_hash_entry *tls_get_addr_fd;
4095 /* The size of reliplt used by got entry relocs. */
4096 bfd_size_type got_reli_size;
4099 unsigned long stub_count[ppc_stub_global_entry];
4101 /* Number of stubs against global syms. */
4102 unsigned long stub_globals;
4104 /* Set if we're linking code with function descriptors. */
4105 unsigned int opd_abi:1;
4107 /* Support for multiple toc sections. */
4108 unsigned int do_multi_toc:1;
4109 unsigned int multi_toc_needed:1;
4110 unsigned int second_toc_pass:1;
4111 unsigned int do_toc_opt:1;
4114 unsigned int stub_error:1;
4116 /* Whether func_desc_adjust needs to be run over symbols. */
4117 unsigned int need_func_desc_adj:1;
4119 /* Whether there exist local gnu indirect function resolvers,
4120 referenced by dynamic relocations. */
4121 unsigned int local_ifunc_resolver:1;
4122 unsigned int maybe_local_ifunc_resolver:1;
4124 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4125 unsigned int has_plt_localentry0:1;
4127 /* Incremented every time we size stubs. */
4128 unsigned int stub_iteration;
4130 /* Small local sym cache. */
4131 struct sym_cache sym_cache;
4134 /* Rename some of the generic section flags to better document how they
4137 /* Nonzero if this section has TLS related relocations. */
4138 #define has_tls_reloc sec_flg0
4140 /* Nonzero if this section has a call to __tls_get_addr. */
4141 #define has_tls_get_addr_call sec_flg1
4143 /* Nonzero if this section has any toc or got relocs. */
4144 #define has_toc_reloc sec_flg2
4146 /* Nonzero if this section has a call to another section that uses
4148 #define makes_toc_func_call sec_flg3
4150 /* Recursion protection when determining above flag. */
4151 #define call_check_in_progress sec_flg4
4152 #define call_check_done sec_flg5
4154 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4156 #define ppc_hash_table(p) \
4157 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4158 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4160 #define ppc_stub_hash_lookup(table, string, create, copy) \
4161 ((struct ppc_stub_hash_entry *) \
4162 bfd_hash_lookup ((table), (string), (create), (copy)))
4164 #define ppc_branch_hash_lookup(table, string, create, copy) \
4165 ((struct ppc_branch_hash_entry *) \
4166 bfd_hash_lookup ((table), (string), (create), (copy)))
4168 /* Create an entry in the stub hash table. */
4170 static struct bfd_hash_entry *
4171 stub_hash_newfunc (struct bfd_hash_entry *entry,
4172 struct bfd_hash_table *table,
4175 /* Allocate the structure if it has not already been allocated by a
4179 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4184 /* Call the allocation method of the superclass. */
4185 entry = bfd_hash_newfunc (entry, table, string);
4188 struct ppc_stub_hash_entry *eh;
4190 /* Initialize the local fields. */
4191 eh = (struct ppc_stub_hash_entry *) entry;
4192 eh->stub_type = ppc_stub_none;
4194 eh->stub_offset = 0;
4195 eh->target_value = 0;
4196 eh->target_section = NULL;
4205 /* Create an entry in the branch hash table. */
4207 static struct bfd_hash_entry *
4208 branch_hash_newfunc (struct bfd_hash_entry *entry,
4209 struct bfd_hash_table *table,
4212 /* Allocate the structure if it has not already been allocated by a
4216 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4221 /* Call the allocation method of the superclass. */
4222 entry = bfd_hash_newfunc (entry, table, string);
4225 struct ppc_branch_hash_entry *eh;
4227 /* Initialize the local fields. */
4228 eh = (struct ppc_branch_hash_entry *) entry;
4236 /* Create an entry in a ppc64 ELF linker hash table. */
4238 static struct bfd_hash_entry *
4239 link_hash_newfunc (struct bfd_hash_entry *entry,
4240 struct bfd_hash_table *table,
4243 /* Allocate the structure if it has not already been allocated by a
4247 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4252 /* Call the allocation method of the superclass. */
4253 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4256 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4258 memset (&eh->u.stub_cache, 0,
4259 (sizeof (struct ppc_link_hash_entry)
4260 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4262 /* When making function calls, old ABI code references function entry
4263 points (dot symbols), while new ABI code references the function
4264 descriptor symbol. We need to make any combination of reference and
4265 definition work together, without breaking archive linking.
4267 For a defined function "foo" and an undefined call to "bar":
4268 An old object defines "foo" and ".foo", references ".bar" (possibly
4270 A new object defines "foo" and references "bar".
4272 A new object thus has no problem with its undefined symbols being
4273 satisfied by definitions in an old object. On the other hand, the
4274 old object won't have ".bar" satisfied by a new object.
4276 Keep a list of newly added dot-symbols. */
4278 if (string[0] == '.')
4280 struct ppc_link_hash_table *htab;
4282 htab = (struct ppc_link_hash_table *) table;
4283 eh->u.next_dot_sym = htab->dot_syms;
4284 htab->dot_syms = eh;
4291 struct tocsave_entry {
4297 tocsave_htab_hash (const void *p)
4299 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4300 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4304 tocsave_htab_eq (const void *p1, const void *p2)
4306 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4307 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4308 return e1->sec == e2->sec && e1->offset == e2->offset;
4311 /* Destroy a ppc64 ELF linker hash table. */
4314 ppc64_elf_link_hash_table_free (bfd *obfd)
4316 struct ppc_link_hash_table *htab;
4318 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4319 if (htab->tocsave_htab)
4320 htab_delete (htab->tocsave_htab);
4321 bfd_hash_table_free (&htab->branch_hash_table);
4322 bfd_hash_table_free (&htab->stub_hash_table);
4323 _bfd_elf_link_hash_table_free (obfd);
4326 /* Create a ppc64 ELF linker hash table. */
4328 static struct bfd_link_hash_table *
4329 ppc64_elf_link_hash_table_create (bfd *abfd)
4331 struct ppc_link_hash_table *htab;
4332 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4334 htab = bfd_zmalloc (amt);
4338 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4339 sizeof (struct ppc_link_hash_entry),
4346 /* Init the stub hash table too. */
4347 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4348 sizeof (struct ppc_stub_hash_entry)))
4350 _bfd_elf_link_hash_table_free (abfd);
4354 /* And the branch hash table. */
4355 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4356 sizeof (struct ppc_branch_hash_entry)))
4358 bfd_hash_table_free (&htab->stub_hash_table);
4359 _bfd_elf_link_hash_table_free (abfd);
4363 htab->tocsave_htab = htab_try_create (1024,
4367 if (htab->tocsave_htab == NULL)
4369 ppc64_elf_link_hash_table_free (abfd);
4372 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4374 /* Initializing two fields of the union is just cosmetic. We really
4375 only care about glist, but when compiled on a 32-bit host the
4376 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4377 debugger inspection of these fields look nicer. */
4378 htab->elf.init_got_refcount.refcount = 0;
4379 htab->elf.init_got_refcount.glist = NULL;
4380 htab->elf.init_plt_refcount.refcount = 0;
4381 htab->elf.init_plt_refcount.glist = NULL;
4382 htab->elf.init_got_offset.offset = 0;
4383 htab->elf.init_got_offset.glist = NULL;
4384 htab->elf.init_plt_offset.offset = 0;
4385 htab->elf.init_plt_offset.glist = NULL;
4387 return &htab->elf.root;
4390 /* Create sections for linker generated code. */
4393 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4395 struct ppc_link_hash_table *htab;
4398 htab = ppc_hash_table (info);
4400 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4401 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4402 if (htab->params->save_restore_funcs)
4404 /* Create .sfpr for code to save and restore fp regs. */
4405 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4407 if (htab->sfpr == NULL
4408 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4412 if (bfd_link_relocatable (info))
4415 /* Create .glink for lazy dynamic linking support. */
4416 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4418 if (htab->glink == NULL
4419 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4422 if (!info->no_ld_generated_unwind_info)
4424 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4425 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4426 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4429 if (htab->glink_eh_frame == NULL
4430 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4434 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4435 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4436 if (htab->elf.iplt == NULL
4437 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4440 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4441 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4443 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4444 if (htab->elf.irelplt == NULL
4445 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4448 /* Create branch lookup table for plt_branch stubs. */
4449 flags = (SEC_ALLOC | SEC_LOAD
4450 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4451 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4453 if (htab->brlt == NULL
4454 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4457 if (!bfd_link_pic (info))
4460 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4461 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4462 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4465 if (htab->relbrlt == NULL
4466 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4472 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4475 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4476 struct ppc64_elf_params *params)
4478 struct ppc_link_hash_table *htab;
4480 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4482 /* Always hook our dynamic sections into the first bfd, which is the
4483 linker created stub bfd. This ensures that the GOT header is at
4484 the start of the output TOC section. */
4485 htab = ppc_hash_table (info);
4486 htab->elf.dynobj = params->stub_bfd;
4487 htab->params = params;
4489 return create_linkage_sections (htab->elf.dynobj, info);
4492 /* Build a name for an entry in the stub hash table. */
4495 ppc_stub_name (const asection *input_section,
4496 const asection *sym_sec,
4497 const struct ppc_link_hash_entry *h,
4498 const Elf_Internal_Rela *rel)
4503 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4504 offsets from a sym as a branch target? In fact, we could
4505 probably assume the addend is always zero. */
4506 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4510 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4511 stub_name = bfd_malloc (len);
4512 if (stub_name == NULL)
4515 len = sprintf (stub_name, "%08x.%s+%x",
4516 input_section->id & 0xffffffff,
4517 h->elf.root.root.string,
4518 (int) rel->r_addend & 0xffffffff);
4522 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4523 stub_name = bfd_malloc (len);
4524 if (stub_name == NULL)
4527 len = sprintf (stub_name, "%08x.%x:%x+%x",
4528 input_section->id & 0xffffffff,
4529 sym_sec->id & 0xffffffff,
4530 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4531 (int) rel->r_addend & 0xffffffff);
4533 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4534 stub_name[len - 2] = 0;
4538 /* Look up an entry in the stub hash. Stub entries are cached because
4539 creating the stub name takes a bit of time. */
4541 static struct ppc_stub_hash_entry *
4542 ppc_get_stub_entry (const asection *input_section,
4543 const asection *sym_sec,
4544 struct ppc_link_hash_entry *h,
4545 const Elf_Internal_Rela *rel,
4546 struct ppc_link_hash_table *htab)
4548 struct ppc_stub_hash_entry *stub_entry;
4549 struct map_stub *group;
4551 /* If this input section is part of a group of sections sharing one
4552 stub section, then use the id of the first section in the group.
4553 Stub names need to include a section id, as there may well be
4554 more than one stub used to reach say, printf, and we need to
4555 distinguish between them. */
4556 group = htab->sec_info[input_section->id].u.group;
4560 if (h != NULL && h->u.stub_cache != NULL
4561 && h->u.stub_cache->h == h
4562 && h->u.stub_cache->group == group)
4564 stub_entry = h->u.stub_cache;
4570 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4571 if (stub_name == NULL)
4574 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4575 stub_name, FALSE, FALSE);
4577 h->u.stub_cache = stub_entry;
4585 /* Add a new stub entry to the stub hash. Not all fields of the new
4586 stub entry are initialised. */
4588 static struct ppc_stub_hash_entry *
4589 ppc_add_stub (const char *stub_name,
4591 struct bfd_link_info *info)
4593 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4594 struct map_stub *group;
4597 struct ppc_stub_hash_entry *stub_entry;
4599 group = htab->sec_info[section->id].u.group;
4600 link_sec = group->link_sec;
4601 stub_sec = group->stub_sec;
4602 if (stub_sec == NULL)
4608 namelen = strlen (link_sec->name);
4609 len = namelen + sizeof (STUB_SUFFIX);
4610 s_name = bfd_alloc (htab->params->stub_bfd, len);
4614 memcpy (s_name, link_sec->name, namelen);
4615 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4616 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4617 if (stub_sec == NULL)
4619 group->stub_sec = stub_sec;
4622 /* Enter this entry into the linker stub hash table. */
4623 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4625 if (stub_entry == NULL)
4627 /* xgettext:c-format */
4628 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4629 section->owner, stub_name);
4633 stub_entry->group = group;
4634 stub_entry->stub_offset = 0;
4638 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4639 not already done. */
4642 create_got_section (bfd *abfd, struct bfd_link_info *info)
4644 asection *got, *relgot;
4646 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4648 if (!is_ppc64_elf (abfd))
4654 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4657 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4658 | SEC_LINKER_CREATED);
4660 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4662 || !bfd_set_section_alignment (abfd, got, 3))
4665 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4666 flags | SEC_READONLY);
4668 || ! bfd_set_section_alignment (abfd, relgot, 3))
4671 ppc64_elf_tdata (abfd)->got = got;
4672 ppc64_elf_tdata (abfd)->relgot = relgot;
4676 /* Follow indirect and warning symbol links. */
4678 static inline struct bfd_link_hash_entry *
4679 follow_link (struct bfd_link_hash_entry *h)
4681 while (h->type == bfd_link_hash_indirect
4682 || h->type == bfd_link_hash_warning)
4687 static inline struct elf_link_hash_entry *
4688 elf_follow_link (struct elf_link_hash_entry *h)
4690 return (struct elf_link_hash_entry *) follow_link (&h->root);
4693 static inline struct ppc_link_hash_entry *
4694 ppc_follow_link (struct ppc_link_hash_entry *h)
4696 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4699 /* Merge PLT info on FROM with that on TO. */
4702 move_plt_plist (struct ppc_link_hash_entry *from,
4703 struct ppc_link_hash_entry *to)
4705 if (from->elf.plt.plist != NULL)
4707 if (to->elf.plt.plist != NULL)
4709 struct plt_entry **entp;
4710 struct plt_entry *ent;
4712 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4714 struct plt_entry *dent;
4716 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4717 if (dent->addend == ent->addend)
4719 dent->plt.refcount += ent->plt.refcount;
4726 *entp = to->elf.plt.plist;
4729 to->elf.plt.plist = from->elf.plt.plist;
4730 from->elf.plt.plist = NULL;
4734 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4737 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4738 struct elf_link_hash_entry *dir,
4739 struct elf_link_hash_entry *ind)
4741 struct ppc_link_hash_entry *edir, *eind;
4743 edir = (struct ppc_link_hash_entry *) dir;
4744 eind = (struct ppc_link_hash_entry *) ind;
4746 edir->is_func |= eind->is_func;
4747 edir->is_func_descriptor |= eind->is_func_descriptor;
4748 edir->tls_mask |= eind->tls_mask;
4749 if (eind->oh != NULL)
4750 edir->oh = ppc_follow_link (eind->oh);
4752 /* If called to transfer flags for a weakdef during processing
4753 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4754 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4755 if (!(ELIMINATE_COPY_RELOCS
4756 && eind->elf.root.type != bfd_link_hash_indirect
4757 && edir->elf.dynamic_adjusted))
4758 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4760 if (edir->elf.versioned != versioned_hidden)
4761 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4762 edir->elf.ref_regular |= eind->elf.ref_regular;
4763 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4764 edir->elf.needs_plt |= eind->elf.needs_plt;
4765 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4767 /* If we were called to copy over info for a weak sym, don't copy
4768 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4769 in order to simplify readonly_dynrelocs and save a field in the
4770 symbol hash entry, but that means dyn_relocs can't be used in any
4771 tests about a specific symbol, or affect other symbol flags which
4773 Chain weakdefs so we can get from the weakdef back to an alias.
4774 The list is circular so that we don't need to use u.weakdef as
4775 well as this list to look at all aliases. */
4776 if (eind->elf.root.type != bfd_link_hash_indirect)
4778 struct ppc_link_hash_entry *cur, *add, *next;
4783 cur = edir->weakref;
4788 /* We can be called twice for the same symbols.
4789 Don't make multiple loops. */
4793 } while (cur != edir);
4795 next = add->weakref;
4798 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4799 edir->weakref = add;
4802 } while (add != NULL && add != eind);
4806 /* Copy over any dynamic relocs we may have on the indirect sym. */
4807 if (eind->dyn_relocs != NULL)
4809 if (edir->dyn_relocs != NULL)
4811 struct elf_dyn_relocs **pp;
4812 struct elf_dyn_relocs *p;
4814 /* Add reloc counts against the indirect sym to the direct sym
4815 list. Merge any entries against the same section. */
4816 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4818 struct elf_dyn_relocs *q;
4820 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4821 if (q->sec == p->sec)
4823 q->pc_count += p->pc_count;
4824 q->count += p->count;
4831 *pp = edir->dyn_relocs;
4834 edir->dyn_relocs = eind->dyn_relocs;
4835 eind->dyn_relocs = NULL;
4838 /* Copy over got entries that we may have already seen to the
4839 symbol which just became indirect. */
4840 if (eind->elf.got.glist != NULL)
4842 if (edir->elf.got.glist != NULL)
4844 struct got_entry **entp;
4845 struct got_entry *ent;
4847 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4849 struct got_entry *dent;
4851 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4852 if (dent->addend == ent->addend
4853 && dent->owner == ent->owner
4854 && dent->tls_type == ent->tls_type)
4856 dent->got.refcount += ent->got.refcount;
4863 *entp = edir->elf.got.glist;
4866 edir->elf.got.glist = eind->elf.got.glist;
4867 eind->elf.got.glist = NULL;
4870 /* And plt entries. */
4871 move_plt_plist (eind, edir);
4873 if (eind->elf.dynindx != -1)
4875 if (edir->elf.dynindx != -1)
4876 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4877 edir->elf.dynstr_index);
4878 edir->elf.dynindx = eind->elf.dynindx;
4879 edir->elf.dynstr_index = eind->elf.dynstr_index;
4880 eind->elf.dynindx = -1;
4881 eind->elf.dynstr_index = 0;
4885 /* Find the function descriptor hash entry from the given function code
4886 hash entry FH. Link the entries via their OH fields. */
4888 static struct ppc_link_hash_entry *
4889 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4891 struct ppc_link_hash_entry *fdh = fh->oh;
4895 const char *fd_name = fh->elf.root.root.string + 1;
4897 fdh = (struct ppc_link_hash_entry *)
4898 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4902 fdh->is_func_descriptor = 1;
4908 fdh = ppc_follow_link (fdh);
4909 fdh->is_func_descriptor = 1;
4914 /* Make a fake function descriptor sym for the undefined code sym FH. */
4916 static struct ppc_link_hash_entry *
4917 make_fdh (struct bfd_link_info *info,
4918 struct ppc_link_hash_entry *fh)
4920 bfd *abfd = fh->elf.root.u.undef.abfd;
4921 struct bfd_link_hash_entry *bh = NULL;
4922 struct ppc_link_hash_entry *fdh;
4923 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4927 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4928 fh->elf.root.root.string + 1,
4929 flags, bfd_und_section_ptr, 0,
4930 NULL, FALSE, FALSE, &bh))
4933 fdh = (struct ppc_link_hash_entry *) bh;
4934 fdh->elf.non_elf = 0;
4936 fdh->is_func_descriptor = 1;
4943 /* Fix function descriptor symbols defined in .opd sections to be
4947 ppc64_elf_add_symbol_hook (bfd *ibfd,
4948 struct bfd_link_info *info,
4949 Elf_Internal_Sym *isym,
4951 flagword *flags ATTRIBUTE_UNUSED,
4955 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4956 && (ibfd->flags & DYNAMIC) == 0
4957 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4958 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4961 && strcmp ((*sec)->name, ".opd") == 0)
4965 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4966 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4967 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4969 /* If the symbol is a function defined in .opd, and the function
4970 code is in a discarded group, let it appear to be undefined. */
4971 if (!bfd_link_relocatable (info)
4972 && (*sec)->reloc_count != 0
4973 && opd_entry_value (*sec, *value, &code_sec, NULL,
4974 FALSE) != (bfd_vma) -1
4975 && discarded_section (code_sec))
4977 *sec = bfd_und_section_ptr;
4978 isym->st_shndx = SHN_UNDEF;
4981 else if (*sec != NULL
4982 && strcmp ((*sec)->name, ".toc") == 0
4983 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4985 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4987 htab->params->object_in_toc = 1;
4990 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4992 if (abiversion (ibfd) == 0)
4993 set_abiversion (ibfd, 2);
4994 else if (abiversion (ibfd) == 1)
4996 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4997 " for ABI version 1\n"), name);
4998 bfd_set_error (bfd_error_bad_value);
5006 /* Merge non-visibility st_other attributes: local entry point. */
5009 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5010 const Elf_Internal_Sym *isym,
5011 bfd_boolean definition,
5012 bfd_boolean dynamic)
5014 if (definition && (!dynamic || !h->def_regular))
5015 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5016 | ELF_ST_VISIBILITY (h->other));
5019 /* Hook called on merging a symbol. We use this to clear "fake" since
5020 we now have a real symbol. */
5023 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5024 const Elf_Internal_Sym *isym ATTRIBUTE_UNUSED,
5025 asection **psec ATTRIBUTE_UNUSED,
5026 bfd_boolean newdef ATTRIBUTE_UNUSED,
5027 bfd_boolean olddef ATTRIBUTE_UNUSED,
5028 bfd *oldbfd ATTRIBUTE_UNUSED,
5029 const asection *oldsec ATTRIBUTE_UNUSED)
5031 ((struct ppc_link_hash_entry *) h)->fake = 0;
5035 /* This function makes an old ABI object reference to ".bar" cause the
5036 inclusion of a new ABI object archive that defines "bar".
5037 NAME is a symbol defined in an archive. Return a symbol in the hash
5038 table that might be satisfied by the archive symbols. */
5040 static struct elf_link_hash_entry *
5041 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5042 struct bfd_link_info *info,
5045 struct elf_link_hash_entry *h;
5049 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5051 /* Don't return this sym if it is a fake function descriptor
5052 created by add_symbol_adjust. */
5053 && !((struct ppc_link_hash_entry *) h)->fake)
5059 len = strlen (name);
5060 dot_name = bfd_alloc (abfd, len + 2);
5061 if (dot_name == NULL)
5062 return (struct elf_link_hash_entry *) 0 - 1;
5064 memcpy (dot_name + 1, name, len + 1);
5065 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5066 bfd_release (abfd, dot_name);
5070 /* This function satisfies all old ABI object references to ".bar" if a
5071 new ABI object defines "bar". Well, at least, undefined dot symbols
5072 are made weak. This stops later archive searches from including an
5073 object if we already have a function descriptor definition. It also
5074 prevents the linker complaining about undefined symbols.
5075 We also check and correct mismatched symbol visibility here. The
5076 most restrictive visibility of the function descriptor and the
5077 function entry symbol is used. */
5080 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5082 struct ppc_link_hash_table *htab;
5083 struct ppc_link_hash_entry *fdh;
5085 if (eh->elf.root.type == bfd_link_hash_warning)
5086 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5088 if (eh->elf.root.type == bfd_link_hash_indirect)
5091 if (eh->elf.root.root.string[0] != '.')
5094 htab = ppc_hash_table (info);
5098 fdh = lookup_fdh (eh, htab);
5100 && !bfd_link_relocatable (info)
5101 && (eh->elf.root.type == bfd_link_hash_undefined
5102 || eh->elf.root.type == bfd_link_hash_undefweak)
5103 && eh->elf.ref_regular)
5105 /* Make an undefined function descriptor sym, in order to
5106 pull in an --as-needed shared lib. Archives are handled
5108 fdh = make_fdh (info, eh);
5115 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5116 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5118 /* Make both descriptor and entry symbol have the most
5119 constraining visibility of either symbol. */
5120 if (entry_vis < descr_vis)
5121 fdh->elf.other += entry_vis - descr_vis;
5122 else if (entry_vis > descr_vis)
5123 eh->elf.other += descr_vis - entry_vis;
5125 /* Propagate reference flags from entry symbol to function
5126 descriptor symbol. */
5127 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5128 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5129 fdh->elf.ref_regular |= eh->elf.ref_regular;
5130 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5132 if (!fdh->elf.forced_local
5133 && fdh->elf.dynindx == -1
5134 && fdh->elf.versioned != versioned_hidden
5135 && (bfd_link_dll (info)
5136 || fdh->elf.def_dynamic
5137 || fdh->elf.ref_dynamic)
5138 && (eh->elf.ref_regular
5139 || eh->elf.def_regular))
5141 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5149 /* Set up opd section info and abiversion for IBFD, and process list
5150 of dot-symbols we made in link_hash_newfunc. */
5153 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5155 struct ppc_link_hash_table *htab;
5156 struct ppc_link_hash_entry **p, *eh;
5157 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5159 if (opd != NULL && opd->size != 0)
5161 if (abiversion (ibfd) == 0)
5162 set_abiversion (ibfd, 1);
5163 else if (abiversion (ibfd) >= 2)
5165 /* xgettext:c-format */
5166 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5168 ibfd, abiversion (ibfd));
5169 bfd_set_error (bfd_error_bad_value);
5173 if ((ibfd->flags & DYNAMIC) == 0
5174 && (opd->flags & SEC_RELOC) != 0
5175 && opd->reloc_count != 0
5176 && !bfd_is_abs_section (opd->output_section))
5178 /* Garbage collection needs some extra help with .opd sections.
5179 We don't want to necessarily keep everything referenced by
5180 relocs in .opd, as that would keep all functions. Instead,
5181 if we reference an .opd symbol (a function descriptor), we
5182 want to keep the function code symbol's section. This is
5183 easy for global symbols, but for local syms we need to keep
5184 information about the associated function section. */
5186 asection **opd_sym_map;
5188 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5189 opd_sym_map = bfd_zalloc (ibfd, amt);
5190 if (opd_sym_map == NULL)
5192 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5193 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5194 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5198 if (!is_ppc64_elf (info->output_bfd))
5200 htab = ppc_hash_table (info);
5204 /* For input files without an explicit abiversion in e_flags
5205 we should have flagged any with symbol st_other bits set
5206 as ELFv1 and above flagged those with .opd as ELFv2.
5207 Set the output abiversion if not yet set, and for any input
5208 still ambiguous, take its abiversion from the output.
5209 Differences in ABI are reported later. */
5210 if (abiversion (info->output_bfd) == 0)
5211 set_abiversion (info->output_bfd, abiversion (ibfd));
5212 else if (abiversion (ibfd) == 0)
5213 set_abiversion (ibfd, abiversion (info->output_bfd));
5215 p = &htab->dot_syms;
5216 while ((eh = *p) != NULL)
5219 if (&eh->elf == htab->elf.hgot)
5221 else if (htab->elf.hgot == NULL
5222 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5223 htab->elf.hgot = &eh->elf;
5224 else if (abiversion (ibfd) <= 1)
5226 htab->need_func_desc_adj = 1;
5227 if (!add_symbol_adjust (eh, info))
5230 p = &eh->u.next_dot_sym;
5235 /* Undo hash table changes when an --as-needed input file is determined
5236 not to be needed. */
5239 ppc64_elf_notice_as_needed (bfd *ibfd,
5240 struct bfd_link_info *info,
5241 enum notice_asneeded_action act)
5243 if (act == notice_not_needed)
5245 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5250 htab->dot_syms = NULL;
5252 return _bfd_elf_notice_as_needed (ibfd, info, act);
5255 /* If --just-symbols against a final linked binary, then assume we need
5256 toc adjusting stubs when calling functions defined there. */
5259 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5261 if ((sec->flags & SEC_CODE) != 0
5262 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5263 && is_ppc64_elf (sec->owner))
5265 if (abiversion (sec->owner) >= 2
5266 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5267 sec->has_toc_reloc = 1;
5269 _bfd_elf_link_just_syms (sec, info);
5272 static struct plt_entry **
5273 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5274 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5276 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5277 struct plt_entry **local_plt;
5278 unsigned char *local_got_tls_masks;
5280 if (local_got_ents == NULL)
5282 bfd_size_type size = symtab_hdr->sh_info;
5284 size *= (sizeof (*local_got_ents)
5285 + sizeof (*local_plt)
5286 + sizeof (*local_got_tls_masks));
5287 local_got_ents = bfd_zalloc (abfd, size);
5288 if (local_got_ents == NULL)
5290 elf_local_got_ents (abfd) = local_got_ents;
5293 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5295 struct got_entry *ent;
5297 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5298 if (ent->addend == r_addend
5299 && ent->owner == abfd
5300 && ent->tls_type == tls_type)
5304 bfd_size_type amt = sizeof (*ent);
5305 ent = bfd_alloc (abfd, amt);
5308 ent->next = local_got_ents[r_symndx];
5309 ent->addend = r_addend;
5311 ent->tls_type = tls_type;
5312 ent->is_indirect = FALSE;
5313 ent->got.refcount = 0;
5314 local_got_ents[r_symndx] = ent;
5316 ent->got.refcount += 1;
5319 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5320 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5321 local_got_tls_masks[r_symndx] |= tls_type;
5323 return local_plt + r_symndx;
5327 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5329 struct plt_entry *ent;
5331 for (ent = *plist; ent != NULL; ent = ent->next)
5332 if (ent->addend == addend)
5336 bfd_size_type amt = sizeof (*ent);
5337 ent = bfd_alloc (abfd, amt);
5341 ent->addend = addend;
5342 ent->plt.refcount = 0;
5345 ent->plt.refcount += 1;
5350 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5352 return (r_type == R_PPC64_REL24
5353 || r_type == R_PPC64_REL14
5354 || r_type == R_PPC64_REL14_BRTAKEN
5355 || r_type == R_PPC64_REL14_BRNTAKEN
5356 || r_type == R_PPC64_ADDR24
5357 || r_type == R_PPC64_ADDR14
5358 || r_type == R_PPC64_ADDR14_BRTAKEN
5359 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5362 /* Look through the relocs for a section during the first phase, and
5363 calculate needed space in the global offset table, procedure
5364 linkage table, and dynamic reloc sections. */
5367 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5368 asection *sec, const Elf_Internal_Rela *relocs)
5370 struct ppc_link_hash_table *htab;
5371 Elf_Internal_Shdr *symtab_hdr;
5372 struct elf_link_hash_entry **sym_hashes;
5373 const Elf_Internal_Rela *rel;
5374 const Elf_Internal_Rela *rel_end;
5376 asection **opd_sym_map;
5377 struct elf_link_hash_entry *tga, *dottga;
5379 if (bfd_link_relocatable (info))
5382 /* Don't do anything special with non-loaded, non-alloced sections.
5383 In particular, any relocs in such sections should not affect GOT
5384 and PLT reference counting (ie. we don't allow them to create GOT
5385 or PLT entries), there's no possibility or desire to optimize TLS
5386 relocs, and there's not much point in propagating relocs to shared
5387 libs that the dynamic linker won't relocate. */
5388 if ((sec->flags & SEC_ALLOC) == 0)
5391 BFD_ASSERT (is_ppc64_elf (abfd));
5393 htab = ppc_hash_table (info);
5397 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5398 FALSE, FALSE, TRUE);
5399 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5400 FALSE, FALSE, TRUE);
5401 symtab_hdr = &elf_symtab_hdr (abfd);
5402 sym_hashes = elf_sym_hashes (abfd);
5405 if (ppc64_elf_section_data (sec) != NULL
5406 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5407 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5409 rel_end = relocs + sec->reloc_count;
5410 for (rel = relocs; rel < rel_end; rel++)
5412 unsigned long r_symndx;
5413 struct elf_link_hash_entry *h;
5414 enum elf_ppc64_reloc_type r_type;
5416 struct _ppc64_elf_section_data *ppc64_sec;
5417 struct plt_entry **ifunc, **plt_list;
5419 r_symndx = ELF64_R_SYM (rel->r_info);
5420 if (r_symndx < symtab_hdr->sh_info)
5424 struct ppc_link_hash_entry *eh;
5426 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5427 h = elf_follow_link (h);
5428 eh = (struct ppc_link_hash_entry *) h;
5430 /* PR15323, ref flags aren't set for references in the same
5432 h->root.non_ir_ref_regular = 1;
5433 if (eh->is_func && eh->oh != NULL)
5434 eh->oh->elf.root.non_ir_ref_regular = 1;
5436 if (h == htab->elf.hgot)
5437 sec->has_toc_reloc = 1;
5444 if (h->type == STT_GNU_IFUNC)
5447 ifunc = &h->plt.plist;
5452 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5457 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5459 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5460 rel->r_addend, PLT_IFUNC);
5466 r_type = ELF64_R_TYPE (rel->r_info);
5471 /* These special tls relocs tie a call to __tls_get_addr with
5472 its parameter symbol. */
5475 case R_PPC64_GOT_TLSLD16:
5476 case R_PPC64_GOT_TLSLD16_LO:
5477 case R_PPC64_GOT_TLSLD16_HI:
5478 case R_PPC64_GOT_TLSLD16_HA:
5479 tls_type = TLS_TLS | TLS_LD;
5482 case R_PPC64_GOT_TLSGD16:
5483 case R_PPC64_GOT_TLSGD16_LO:
5484 case R_PPC64_GOT_TLSGD16_HI:
5485 case R_PPC64_GOT_TLSGD16_HA:
5486 tls_type = TLS_TLS | TLS_GD;
5489 case R_PPC64_GOT_TPREL16_DS:
5490 case R_PPC64_GOT_TPREL16_LO_DS:
5491 case R_PPC64_GOT_TPREL16_HI:
5492 case R_PPC64_GOT_TPREL16_HA:
5493 if (bfd_link_pic (info))
5494 info->flags |= DF_STATIC_TLS;
5495 tls_type = TLS_TLS | TLS_TPREL;
5498 case R_PPC64_GOT_DTPREL16_DS:
5499 case R_PPC64_GOT_DTPREL16_LO_DS:
5500 case R_PPC64_GOT_DTPREL16_HI:
5501 case R_PPC64_GOT_DTPREL16_HA:
5502 tls_type = TLS_TLS | TLS_DTPREL;
5504 sec->has_tls_reloc = 1;
5508 case R_PPC64_GOT16_DS:
5509 case R_PPC64_GOT16_HA:
5510 case R_PPC64_GOT16_HI:
5511 case R_PPC64_GOT16_LO:
5512 case R_PPC64_GOT16_LO_DS:
5513 /* This symbol requires a global offset table entry. */
5514 sec->has_toc_reloc = 1;
5515 if (r_type == R_PPC64_GOT_TLSLD16
5516 || r_type == R_PPC64_GOT_TLSGD16
5517 || r_type == R_PPC64_GOT_TPREL16_DS
5518 || r_type == R_PPC64_GOT_DTPREL16_DS
5519 || r_type == R_PPC64_GOT16
5520 || r_type == R_PPC64_GOT16_DS)
5522 htab->do_multi_toc = 1;
5523 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5526 if (ppc64_elf_tdata (abfd)->got == NULL
5527 && !create_got_section (abfd, info))
5532 struct ppc_link_hash_entry *eh;
5533 struct got_entry *ent;
5535 eh = (struct ppc_link_hash_entry *) h;
5536 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5537 if (ent->addend == rel->r_addend
5538 && ent->owner == abfd
5539 && ent->tls_type == tls_type)
5543 bfd_size_type amt = sizeof (*ent);
5544 ent = bfd_alloc (abfd, amt);
5547 ent->next = eh->elf.got.glist;
5548 ent->addend = rel->r_addend;
5550 ent->tls_type = tls_type;
5551 ent->is_indirect = FALSE;
5552 ent->got.refcount = 0;
5553 eh->elf.got.glist = ent;
5555 ent->got.refcount += 1;
5556 eh->tls_mask |= tls_type;
5559 /* This is a global offset table entry for a local symbol. */
5560 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5561 rel->r_addend, tls_type))
5564 /* We may also need a plt entry if the symbol turns out to be
5566 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5568 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5573 case R_PPC64_PLT16_HA:
5574 case R_PPC64_PLT16_HI:
5575 case R_PPC64_PLT16_LO:
5578 /* This symbol requires a procedure linkage table entry. */
5583 if (h->root.root.string[0] == '.'
5584 && h->root.root.string[1] != '\0')
5585 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5586 plt_list = &h->plt.plist;
5588 if (plt_list == NULL)
5590 /* It does not make sense to have a procedure linkage
5591 table entry for a non-ifunc local symbol. */
5592 info->callbacks->einfo
5593 /* xgettext:c-format */
5594 (_("%H: %s reloc against local symbol\n"),
5595 abfd, sec, rel->r_offset,
5596 ppc64_elf_howto_table[r_type]->name);
5597 bfd_set_error (bfd_error_bad_value);
5600 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5604 /* The following relocations don't need to propagate the
5605 relocation if linking a shared object since they are
5606 section relative. */
5607 case R_PPC64_SECTOFF:
5608 case R_PPC64_SECTOFF_LO:
5609 case R_PPC64_SECTOFF_HI:
5610 case R_PPC64_SECTOFF_HA:
5611 case R_PPC64_SECTOFF_DS:
5612 case R_PPC64_SECTOFF_LO_DS:
5613 case R_PPC64_DTPREL16:
5614 case R_PPC64_DTPREL16_LO:
5615 case R_PPC64_DTPREL16_HI:
5616 case R_PPC64_DTPREL16_HA:
5617 case R_PPC64_DTPREL16_DS:
5618 case R_PPC64_DTPREL16_LO_DS:
5619 case R_PPC64_DTPREL16_HIGH:
5620 case R_PPC64_DTPREL16_HIGHA:
5621 case R_PPC64_DTPREL16_HIGHER:
5622 case R_PPC64_DTPREL16_HIGHERA:
5623 case R_PPC64_DTPREL16_HIGHEST:
5624 case R_PPC64_DTPREL16_HIGHESTA:
5629 case R_PPC64_REL16_LO:
5630 case R_PPC64_REL16_HI:
5631 case R_PPC64_REL16_HA:
5632 case R_PPC64_REL16DX_HA:
5635 /* Not supported as a dynamic relocation. */
5636 case R_PPC64_ADDR64_LOCAL:
5637 if (bfd_link_pic (info))
5639 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5641 /* xgettext:c-format */
5642 info->callbacks->einfo (_("%H: %s reloc unsupported "
5643 "in shared libraries and PIEs.\n"),
5644 abfd, sec, rel->r_offset,
5645 ppc64_elf_howto_table[r_type]->name);
5646 bfd_set_error (bfd_error_bad_value);
5652 case R_PPC64_TOC16_DS:
5653 htab->do_multi_toc = 1;
5654 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5656 case R_PPC64_TOC16_LO:
5657 case R_PPC64_TOC16_HI:
5658 case R_PPC64_TOC16_HA:
5659 case R_PPC64_TOC16_LO_DS:
5660 sec->has_toc_reloc = 1;
5667 /* This relocation describes the C++ object vtable hierarchy.
5668 Reconstruct it for later use during GC. */
5669 case R_PPC64_GNU_VTINHERIT:
5670 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5674 /* This relocation describes which C++ vtable entries are actually
5675 used. Record for later use during GC. */
5676 case R_PPC64_GNU_VTENTRY:
5677 BFD_ASSERT (h != NULL);
5679 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5684 case R_PPC64_REL14_BRTAKEN:
5685 case R_PPC64_REL14_BRNTAKEN:
5687 asection *dest = NULL;
5689 /* Heuristic: If jumping outside our section, chances are
5690 we are going to need a stub. */
5693 /* If the sym is weak it may be overridden later, so
5694 don't assume we know where a weak sym lives. */
5695 if (h->root.type == bfd_link_hash_defined)
5696 dest = h->root.u.def.section;
5700 Elf_Internal_Sym *isym;
5702 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5707 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5711 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5720 if (h->root.root.string[0] == '.'
5721 && h->root.root.string[1] != '\0')
5722 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5724 if (h == tga || h == dottga)
5726 sec->has_tls_reloc = 1;
5728 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5729 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5730 /* We have a new-style __tls_get_addr call with
5734 /* Mark this section as having an old-style call. */
5735 sec->has_tls_get_addr_call = 1;
5737 plt_list = &h->plt.plist;
5740 /* We may need a .plt entry if the function this reloc
5741 refers to is in a shared lib. */
5743 && !update_plt_info (abfd, plt_list, rel->r_addend))
5747 case R_PPC64_ADDR14:
5748 case R_PPC64_ADDR14_BRNTAKEN:
5749 case R_PPC64_ADDR14_BRTAKEN:
5750 case R_PPC64_ADDR24:
5753 case R_PPC64_TPREL64:
5754 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5755 if (bfd_link_pic (info))
5756 info->flags |= DF_STATIC_TLS;
5759 case R_PPC64_DTPMOD64:
5760 if (rel + 1 < rel_end
5761 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5762 && rel[1].r_offset == rel->r_offset + 8)
5763 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5765 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5768 case R_PPC64_DTPREL64:
5769 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5771 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5772 && rel[-1].r_offset == rel->r_offset - 8)
5773 /* This is the second reloc of a dtpmod, dtprel pair.
5774 Don't mark with TLS_DTPREL. */
5778 sec->has_tls_reloc = 1;
5781 struct ppc_link_hash_entry *eh;
5782 eh = (struct ppc_link_hash_entry *) h;
5783 eh->tls_mask |= tls_type;
5786 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5787 rel->r_addend, tls_type))
5790 ppc64_sec = ppc64_elf_section_data (sec);
5791 if (ppc64_sec->sec_type != sec_toc)
5795 /* One extra to simplify get_tls_mask. */
5796 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5797 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5798 if (ppc64_sec->u.toc.symndx == NULL)
5800 amt = sec->size * sizeof (bfd_vma) / 8;
5801 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5802 if (ppc64_sec->u.toc.add == NULL)
5804 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5805 ppc64_sec->sec_type = sec_toc;
5807 BFD_ASSERT (rel->r_offset % 8 == 0);
5808 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5809 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5811 /* Mark the second slot of a GD or LD entry.
5812 -1 to indicate GD and -2 to indicate LD. */
5813 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5814 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5815 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5816 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5819 case R_PPC64_TPREL16:
5820 case R_PPC64_TPREL16_LO:
5821 case R_PPC64_TPREL16_HI:
5822 case R_PPC64_TPREL16_HA:
5823 case R_PPC64_TPREL16_DS:
5824 case R_PPC64_TPREL16_LO_DS:
5825 case R_PPC64_TPREL16_HIGH:
5826 case R_PPC64_TPREL16_HIGHA:
5827 case R_PPC64_TPREL16_HIGHER:
5828 case R_PPC64_TPREL16_HIGHERA:
5829 case R_PPC64_TPREL16_HIGHEST:
5830 case R_PPC64_TPREL16_HIGHESTA:
5831 if (bfd_link_pic (info))
5833 info->flags |= DF_STATIC_TLS;
5838 case R_PPC64_ADDR64:
5839 if (opd_sym_map != NULL
5840 && rel + 1 < rel_end
5841 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5844 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5848 Elf_Internal_Sym *isym;
5850 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5855 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5856 if (s != NULL && s != sec)
5857 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5862 case R_PPC64_ADDR16:
5863 case R_PPC64_ADDR16_DS:
5864 case R_PPC64_ADDR16_HA:
5865 case R_PPC64_ADDR16_HI:
5866 case R_PPC64_ADDR16_HIGH:
5867 case R_PPC64_ADDR16_HIGHA:
5868 case R_PPC64_ADDR16_HIGHER:
5869 case R_PPC64_ADDR16_HIGHERA:
5870 case R_PPC64_ADDR16_HIGHEST:
5871 case R_PPC64_ADDR16_HIGHESTA:
5872 case R_PPC64_ADDR16_LO:
5873 case R_PPC64_ADDR16_LO_DS:
5874 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5875 && rel->r_addend == 0)
5877 /* We may need a .plt entry if this reloc refers to a
5878 function in a shared lib. */
5879 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5881 h->pointer_equality_needed = 1;
5888 case R_PPC64_ADDR32:
5889 case R_PPC64_UADDR16:
5890 case R_PPC64_UADDR32:
5891 case R_PPC64_UADDR64:
5893 if (h != NULL && !bfd_link_pic (info))
5894 /* We may need a copy reloc. */
5897 /* Don't propagate .opd relocs. */
5898 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5901 /* If we are creating a shared library, and this is a reloc
5902 against a global symbol, or a non PC relative reloc
5903 against a local symbol, then we need to copy the reloc
5904 into the shared library. However, if we are linking with
5905 -Bsymbolic, we do not need to copy a reloc against a
5906 global symbol which is defined in an object we are
5907 including in the link (i.e., DEF_REGULAR is set). At
5908 this point we have not seen all the input files, so it is
5909 possible that DEF_REGULAR is not set now but will be set
5910 later (it is never cleared). In case of a weak definition,
5911 DEF_REGULAR may be cleared later by a strong definition in
5912 a shared library. We account for that possibility below by
5913 storing information in the dyn_relocs field of the hash
5914 table entry. A similar situation occurs when creating
5915 shared libraries and symbol visibility changes render the
5918 If on the other hand, we are creating an executable, we
5919 may need to keep relocations for symbols satisfied by a
5920 dynamic library if we manage to avoid copy relocs for the
5923 if ((bfd_link_pic (info)
5924 && (must_be_dyn_reloc (info, r_type)
5926 && (!SYMBOLIC_BIND (info, h)
5927 || h->root.type == bfd_link_hash_defweak
5928 || !h->def_regular))))
5929 || (ELIMINATE_COPY_RELOCS
5930 && !bfd_link_pic (info)
5932 && (h->root.type == bfd_link_hash_defweak
5933 || !h->def_regular))
5934 || (!bfd_link_pic (info)
5937 /* We must copy these reloc types into the output file.
5938 Create a reloc section in dynobj and make room for
5942 sreloc = _bfd_elf_make_dynamic_reloc_section
5943 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5949 /* If this is a global symbol, we count the number of
5950 relocations we need for this symbol. */
5953 struct elf_dyn_relocs *p;
5954 struct elf_dyn_relocs **head;
5956 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5958 if (p == NULL || p->sec != sec)
5960 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5970 if (!must_be_dyn_reloc (info, r_type))
5975 /* Track dynamic relocs needed for local syms too.
5976 We really need local syms available to do this
5978 struct ppc_dyn_relocs *p;
5979 struct ppc_dyn_relocs **head;
5980 bfd_boolean is_ifunc;
5983 Elf_Internal_Sym *isym;
5985 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5990 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5994 vpp = &elf_section_data (s)->local_dynrel;
5995 head = (struct ppc_dyn_relocs **) vpp;
5996 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5998 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
6000 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
6002 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6008 p->ifunc = is_ifunc;
6024 /* Merge backend specific data from an object file to the output
6025 object file when linking. */
6028 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6030 bfd *obfd = info->output_bfd;
6031 unsigned long iflags, oflags;
6033 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6036 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6039 if (!_bfd_generic_verify_endian_match (ibfd, info))
6042 iflags = elf_elfheader (ibfd)->e_flags;
6043 oflags = elf_elfheader (obfd)->e_flags;
6045 if (iflags & ~EF_PPC64_ABI)
6048 /* xgettext:c-format */
6049 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6050 bfd_set_error (bfd_error_bad_value);
6053 else if (iflags != oflags && iflags != 0)
6056 /* xgettext:c-format */
6057 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6058 ibfd, iflags, oflags);
6059 bfd_set_error (bfd_error_bad_value);
6063 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6065 /* Merge Tag_compatibility attributes and any common GNU ones. */
6066 _bfd_elf_merge_object_attributes (ibfd, info);
6072 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6074 /* Print normal ELF private data. */
6075 _bfd_elf_print_private_bfd_data (abfd, ptr);
6077 if (elf_elfheader (abfd)->e_flags != 0)
6081 fprintf (file, _("private flags = 0x%lx:"),
6082 elf_elfheader (abfd)->e_flags);
6084 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6085 fprintf (file, _(" [abiv%ld]"),
6086 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6093 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6094 of the code entry point, and its section, which must be in the same
6095 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6098 opd_entry_value (asection *opd_sec,
6100 asection **code_sec,
6102 bfd_boolean in_code_sec)
6104 bfd *opd_bfd = opd_sec->owner;
6105 Elf_Internal_Rela *relocs;
6106 Elf_Internal_Rela *lo, *hi, *look;
6109 /* No relocs implies we are linking a --just-symbols object, or looking
6110 at a final linked executable with addr2line or somesuch. */
6111 if (opd_sec->reloc_count == 0)
6113 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6115 if (contents == NULL)
6117 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6118 return (bfd_vma) -1;
6119 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6122 /* PR 17512: file: 64b9dfbb. */
6123 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6124 return (bfd_vma) -1;
6126 val = bfd_get_64 (opd_bfd, contents + offset);
6127 if (code_sec != NULL)
6129 asection *sec, *likely = NULL;
6135 && val < sec->vma + sec->size)
6141 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6143 && (sec->flags & SEC_LOAD) != 0
6144 && (sec->flags & SEC_ALLOC) != 0)
6149 if (code_off != NULL)
6150 *code_off = val - likely->vma;
6156 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6158 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6160 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6161 /* PR 17512: file: df8e1fd6. */
6163 return (bfd_vma) -1;
6165 /* Go find the opd reloc at the sym address. */
6167 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6171 look = lo + (hi - lo) / 2;
6172 if (look->r_offset < offset)
6174 else if (look->r_offset > offset)
6178 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6180 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6181 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6183 unsigned long symndx = ELF64_R_SYM (look->r_info);
6184 asection *sec = NULL;
6186 if (symndx >= symtab_hdr->sh_info
6187 && elf_sym_hashes (opd_bfd) != NULL)
6189 struct elf_link_hash_entry **sym_hashes;
6190 struct elf_link_hash_entry *rh;
6192 sym_hashes = elf_sym_hashes (opd_bfd);
6193 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6196 rh = elf_follow_link (rh);
6197 if (rh->root.type != bfd_link_hash_defined
6198 && rh->root.type != bfd_link_hash_defweak)
6200 if (rh->root.u.def.section->owner == opd_bfd)
6202 val = rh->root.u.def.value;
6203 sec = rh->root.u.def.section;
6210 Elf_Internal_Sym *sym;
6212 if (symndx < symtab_hdr->sh_info)
6214 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6217 size_t symcnt = symtab_hdr->sh_info;
6218 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6223 symtab_hdr->contents = (bfd_byte *) sym;
6229 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6235 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6238 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6239 val = sym->st_value;
6242 val += look->r_addend;
6243 if (code_off != NULL)
6245 if (code_sec != NULL)
6247 if (in_code_sec && *code_sec != sec)
6252 if (sec->output_section != NULL)
6253 val += sec->output_section->vma + sec->output_offset;
6262 /* If the ELF symbol SYM might be a function in SEC, return the
6263 function size and set *CODE_OFF to the function's entry point,
6264 otherwise return zero. */
6266 static bfd_size_type
6267 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6272 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6273 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6277 if (!(sym->flags & BSF_SYNTHETIC))
6278 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6280 if (strcmp (sym->section->name, ".opd") == 0)
6282 struct _opd_sec_data *opd = get_opd_info (sym->section);
6283 bfd_vma symval = sym->value;
6286 && opd->adjust != NULL
6287 && elf_section_data (sym->section)->relocs != NULL)
6289 /* opd_entry_value will use cached relocs that have been
6290 adjusted, but with raw symbols. That means both local
6291 and global symbols need adjusting. */
6292 long adjust = opd->adjust[OPD_NDX (symval)];
6298 if (opd_entry_value (sym->section, symval,
6299 &sec, code_off, TRUE) == (bfd_vma) -1)
6301 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6302 symbol. This size has nothing to do with the code size of the
6303 function, which is what we're supposed to return, but the
6304 code size isn't available without looking up the dot-sym.
6305 However, doing that would be a waste of time particularly
6306 since elf_find_function will look at the dot-sym anyway.
6307 Now, elf_find_function will keep the largest size of any
6308 function sym found at the code address of interest, so return
6309 1 here to avoid it incorrectly caching a larger function size
6310 for a small function. This does mean we return the wrong
6311 size for a new-ABI function of size 24, but all that does is
6312 disable caching for such functions. */
6318 if (sym->section != sec)
6320 *code_off = sym->value;
6327 /* Return true if symbol is a strong function defined in an ELFv2
6328 object with st_other localentry bits of zero, ie. its local entry
6329 point coincides with its global entry point. */
6332 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6335 && h->type == STT_FUNC
6336 && h->root.type == bfd_link_hash_defined
6337 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6338 && is_ppc64_elf (h->root.u.def.section->owner)
6339 && abiversion (h->root.u.def.section->owner) >= 2);
6342 /* Return true if symbol is defined in a regular object file. */
6345 is_static_defined (struct elf_link_hash_entry *h)
6347 return ((h->root.type == bfd_link_hash_defined
6348 || h->root.type == bfd_link_hash_defweak)
6349 && h->root.u.def.section != NULL
6350 && h->root.u.def.section->output_section != NULL);
6353 /* If FDH is a function descriptor symbol, return the associated code
6354 entry symbol if it is defined. Return NULL otherwise. */
6356 static struct ppc_link_hash_entry *
6357 defined_code_entry (struct ppc_link_hash_entry *fdh)
6359 if (fdh->is_func_descriptor)
6361 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6362 if (fh->elf.root.type == bfd_link_hash_defined
6363 || fh->elf.root.type == bfd_link_hash_defweak)
6369 /* If FH is a function code entry symbol, return the associated
6370 function descriptor symbol if it is defined. Return NULL otherwise. */
6372 static struct ppc_link_hash_entry *
6373 defined_func_desc (struct ppc_link_hash_entry *fh)
6376 && fh->oh->is_func_descriptor)
6378 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6379 if (fdh->elf.root.type == bfd_link_hash_defined
6380 || fdh->elf.root.type == bfd_link_hash_defweak)
6386 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6388 /* Garbage collect sections, after first dealing with dot-symbols. */
6391 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6393 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6395 if (htab != NULL && htab->need_func_desc_adj)
6397 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6398 htab->need_func_desc_adj = 0;
6400 return bfd_elf_gc_sections (abfd, info);
6403 /* Mark all our entry sym sections, both opd and code section. */
6406 ppc64_elf_gc_keep (struct bfd_link_info *info)
6408 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6409 struct bfd_sym_chain *sym;
6414 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6416 struct ppc_link_hash_entry *eh, *fh;
6419 eh = (struct ppc_link_hash_entry *)
6420 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6423 if (eh->elf.root.type != bfd_link_hash_defined
6424 && eh->elf.root.type != bfd_link_hash_defweak)
6427 fh = defined_code_entry (eh);
6430 sec = fh->elf.root.u.def.section;
6431 sec->flags |= SEC_KEEP;
6433 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6434 && opd_entry_value (eh->elf.root.u.def.section,
6435 eh->elf.root.u.def.value,
6436 &sec, NULL, FALSE) != (bfd_vma) -1)
6437 sec->flags |= SEC_KEEP;
6439 sec = eh->elf.root.u.def.section;
6440 sec->flags |= SEC_KEEP;
6444 /* Mark sections containing dynamically referenced symbols. When
6445 building shared libraries, we must assume that any visible symbol is
6449 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6451 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6452 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6453 struct ppc_link_hash_entry *fdh;
6454 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6456 /* Dynamic linking info is on the func descriptor sym. */
6457 fdh = defined_func_desc (eh);
6461 if ((eh->elf.root.type == bfd_link_hash_defined
6462 || eh->elf.root.type == bfd_link_hash_defweak)
6463 && (eh->elf.ref_dynamic
6464 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6465 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6466 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6467 && (!bfd_link_executable (info)
6468 || info->gc_keep_exported
6469 || info->export_dynamic
6472 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6473 && (eh->elf.versioned >= versioned
6474 || !bfd_hide_sym_by_version (info->version_info,
6475 eh->elf.root.root.string)))))
6478 struct ppc_link_hash_entry *fh;
6480 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6482 /* Function descriptor syms cause the associated
6483 function code sym section to be marked. */
6484 fh = defined_code_entry (eh);
6487 code_sec = fh->elf.root.u.def.section;
6488 code_sec->flags |= SEC_KEEP;
6490 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6491 && opd_entry_value (eh->elf.root.u.def.section,
6492 eh->elf.root.u.def.value,
6493 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6494 code_sec->flags |= SEC_KEEP;
6500 /* Return the section that should be marked against GC for a given
6504 ppc64_elf_gc_mark_hook (asection *sec,
6505 struct bfd_link_info *info,
6506 Elf_Internal_Rela *rel,
6507 struct elf_link_hash_entry *h,
6508 Elf_Internal_Sym *sym)
6512 /* Syms return NULL if we're marking .opd, so we avoid marking all
6513 function sections, as all functions are referenced in .opd. */
6515 if (get_opd_info (sec) != NULL)
6520 enum elf_ppc64_reloc_type r_type;
6521 struct ppc_link_hash_entry *eh, *fh, *fdh;
6523 r_type = ELF64_R_TYPE (rel->r_info);
6526 case R_PPC64_GNU_VTINHERIT:
6527 case R_PPC64_GNU_VTENTRY:
6531 switch (h->root.type)
6533 case bfd_link_hash_defined:
6534 case bfd_link_hash_defweak:
6535 eh = (struct ppc_link_hash_entry *) h;
6536 fdh = defined_func_desc (eh);
6539 /* -mcall-aixdesc code references the dot-symbol on
6540 a call reloc. Mark the function descriptor too
6541 against garbage collection. */
6543 if (fdh->elf.u.weakdef != NULL)
6544 fdh->elf.u.weakdef->mark = 1;
6548 /* Function descriptor syms cause the associated
6549 function code sym section to be marked. */
6550 fh = defined_code_entry (eh);
6553 /* They also mark their opd section. */
6554 eh->elf.root.u.def.section->gc_mark = 1;
6556 rsec = fh->elf.root.u.def.section;
6558 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6559 && opd_entry_value (eh->elf.root.u.def.section,
6560 eh->elf.root.u.def.value,
6561 &rsec, NULL, FALSE) != (bfd_vma) -1)
6562 eh->elf.root.u.def.section->gc_mark = 1;
6564 rsec = h->root.u.def.section;
6567 case bfd_link_hash_common:
6568 rsec = h->root.u.c.p->section;
6572 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6578 struct _opd_sec_data *opd;
6580 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6581 opd = get_opd_info (rsec);
6582 if (opd != NULL && opd->func_sec != NULL)
6586 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6593 /* Update the .got, .plt. and dynamic reloc reference counts for the
6594 section being removed. */
6597 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6598 asection *sec, const Elf_Internal_Rela *relocs)
6600 struct ppc_link_hash_table *htab;
6601 Elf_Internal_Shdr *symtab_hdr;
6602 struct elf_link_hash_entry **sym_hashes;
6603 struct got_entry **local_got_ents;
6604 const Elf_Internal_Rela *rel, *relend;
6606 if (bfd_link_relocatable (info))
6609 if ((sec->flags & SEC_ALLOC) == 0)
6612 elf_section_data (sec)->local_dynrel = NULL;
6614 htab = ppc_hash_table (info);
6618 symtab_hdr = &elf_symtab_hdr (abfd);
6619 sym_hashes = elf_sym_hashes (abfd);
6620 local_got_ents = elf_local_got_ents (abfd);
6622 relend = relocs + sec->reloc_count;
6623 for (rel = relocs; rel < relend; rel++)
6625 unsigned long r_symndx;
6626 enum elf_ppc64_reloc_type r_type;
6627 struct elf_link_hash_entry *h = NULL;
6628 struct plt_entry **plt_list = NULL;
6629 unsigned char tls_type = 0;
6631 r_symndx = ELF64_R_SYM (rel->r_info);
6632 r_type = ELF64_R_TYPE (rel->r_info);
6633 if (r_symndx >= symtab_hdr->sh_info)
6635 struct ppc_link_hash_entry *eh;
6636 struct elf_dyn_relocs **pp;
6637 struct elf_dyn_relocs *p;
6639 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6640 h = elf_follow_link (h);
6641 eh = (struct ppc_link_hash_entry *) h;
6643 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6646 /* Everything must go for SEC. */
6654 case R_PPC64_GOT_TLSLD16:
6655 case R_PPC64_GOT_TLSLD16_LO:
6656 case R_PPC64_GOT_TLSLD16_HI:
6657 case R_PPC64_GOT_TLSLD16_HA:
6658 tls_type = TLS_TLS | TLS_LD;
6661 case R_PPC64_GOT_TLSGD16:
6662 case R_PPC64_GOT_TLSGD16_LO:
6663 case R_PPC64_GOT_TLSGD16_HI:
6664 case R_PPC64_GOT_TLSGD16_HA:
6665 tls_type = TLS_TLS | TLS_GD;
6668 case R_PPC64_GOT_TPREL16_DS:
6669 case R_PPC64_GOT_TPREL16_LO_DS:
6670 case R_PPC64_GOT_TPREL16_HI:
6671 case R_PPC64_GOT_TPREL16_HA:
6672 tls_type = TLS_TLS | TLS_TPREL;
6675 case R_PPC64_GOT_DTPREL16_DS:
6676 case R_PPC64_GOT_DTPREL16_LO_DS:
6677 case R_PPC64_GOT_DTPREL16_HI:
6678 case R_PPC64_GOT_DTPREL16_HA:
6679 tls_type = TLS_TLS | TLS_DTPREL;
6683 case R_PPC64_GOT16_DS:
6684 case R_PPC64_GOT16_HA:
6685 case R_PPC64_GOT16_HI:
6686 case R_PPC64_GOT16_LO:
6687 case R_PPC64_GOT16_LO_DS:
6690 struct got_entry *ent;
6695 ent = local_got_ents[r_symndx];
6697 for (; ent != NULL; ent = ent->next)
6698 if (ent->addend == rel->r_addend
6699 && ent->owner == abfd
6700 && ent->tls_type == tls_type)
6704 if (ent->got.refcount > 0)
6705 ent->got.refcount -= 1;
6707 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
6708 plt_list = &h->plt.plist;
6711 case R_PPC64_PLT16_HA:
6712 case R_PPC64_PLT16_HI:
6713 case R_PPC64_PLT16_LO:
6717 case R_PPC64_REL14_BRNTAKEN:
6718 case R_PPC64_REL14_BRTAKEN:
6721 plt_list = &h->plt.plist;
6722 else if (local_got_ents != NULL)
6724 struct plt_entry **local_plt = (struct plt_entry **)
6725 (local_got_ents + symtab_hdr->sh_info);
6726 unsigned char *local_got_tls_masks = (unsigned char *)
6727 (local_plt + symtab_hdr->sh_info);
6728 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6729 plt_list = local_plt + r_symndx;
6733 case R_PPC64_ADDR64:
6734 case R_PPC64_ADDR16:
6735 case R_PPC64_ADDR16_DS:
6736 case R_PPC64_ADDR16_HA:
6737 case R_PPC64_ADDR16_HI:
6738 case R_PPC64_ADDR16_HIGH:
6739 case R_PPC64_ADDR16_HIGHA:
6740 case R_PPC64_ADDR16_HIGHER:
6741 case R_PPC64_ADDR16_HIGHERA:
6742 case R_PPC64_ADDR16_HIGHEST:
6743 case R_PPC64_ADDR16_HIGHESTA:
6744 case R_PPC64_ADDR16_LO:
6745 case R_PPC64_ADDR16_LO_DS:
6746 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
6747 && rel->r_addend == 0)
6748 plt_list = &h->plt.plist;
6754 if (plt_list != NULL)
6756 struct plt_entry *ent;
6758 for (ent = *plt_list; ent != NULL; ent = ent->next)
6759 if (ent->addend == rel->r_addend)
6761 if (ent != NULL && ent->plt.refcount > 0)
6762 ent->plt.refcount -= 1;
6768 /* The maximum size of .sfpr. */
6769 #define SFPR_MAX (218*4)
6771 struct sfpr_def_parms
6773 const char name[12];
6774 unsigned char lo, hi;
6775 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6776 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6779 /* Auto-generate _save*, _rest* functions in .sfpr.
6780 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6784 sfpr_define (struct bfd_link_info *info,
6785 const struct sfpr_def_parms *parm,
6788 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6790 size_t len = strlen (parm->name);
6791 bfd_boolean writing = FALSE;
6797 memcpy (sym, parm->name, len);
6800 for (i = parm->lo; i <= parm->hi; i++)
6802 struct ppc_link_hash_entry *h;
6804 sym[len + 0] = i / 10 + '0';
6805 sym[len + 1] = i % 10 + '0';
6806 h = (struct ppc_link_hash_entry *)
6807 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6808 if (stub_sec != NULL)
6811 && h->elf.root.type == bfd_link_hash_defined
6812 && h->elf.root.u.def.section == htab->sfpr)
6814 struct elf_link_hash_entry *s;
6816 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6817 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6820 if (s->root.type == bfd_link_hash_new
6821 || (s->root.type = bfd_link_hash_defined
6822 && s->root.u.def.section == stub_sec))
6824 s->root.type = bfd_link_hash_defined;
6825 s->root.u.def.section = stub_sec;
6826 s->root.u.def.value = (stub_sec->size
6827 + h->elf.root.u.def.value);
6830 s->ref_regular_nonweak = 1;
6831 s->forced_local = 1;
6833 s->root.linker_def = 1;
6841 if (!h->elf.def_regular)
6843 h->elf.root.type = bfd_link_hash_defined;
6844 h->elf.root.u.def.section = htab->sfpr;
6845 h->elf.root.u.def.value = htab->sfpr->size;
6846 h->elf.type = STT_FUNC;
6847 h->elf.def_regular = 1;
6849 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6851 if (htab->sfpr->contents == NULL)
6853 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6854 if (htab->sfpr->contents == NULL)
6861 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6863 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6865 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6866 htab->sfpr->size = p - htab->sfpr->contents;
6874 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6876 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6881 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6883 p = savegpr0 (abfd, p, r);
6884 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6886 bfd_put_32 (abfd, BLR, p);
6891 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6893 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6898 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6900 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6902 p = restgpr0 (abfd, p, r);
6903 bfd_put_32 (abfd, MTLR_R0, p);
6907 p = restgpr0 (abfd, p, 30);
6908 p = restgpr0 (abfd, p, 31);
6910 bfd_put_32 (abfd, BLR, p);
6915 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6917 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6922 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6924 p = savegpr1 (abfd, p, r);
6925 bfd_put_32 (abfd, BLR, p);
6930 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6932 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6937 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6939 p = restgpr1 (abfd, p, r);
6940 bfd_put_32 (abfd, BLR, p);
6945 savefpr (bfd *abfd, bfd_byte *p, int r)
6947 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6952 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6954 p = savefpr (abfd, p, r);
6955 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6957 bfd_put_32 (abfd, BLR, p);
6962 restfpr (bfd *abfd, bfd_byte *p, int r)
6964 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6969 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6971 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6973 p = restfpr (abfd, p, r);
6974 bfd_put_32 (abfd, MTLR_R0, p);
6978 p = restfpr (abfd, p, 30);
6979 p = restfpr (abfd, p, 31);
6981 bfd_put_32 (abfd, BLR, p);
6986 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6988 p = savefpr (abfd, p, r);
6989 bfd_put_32 (abfd, BLR, p);
6994 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6996 p = restfpr (abfd, p, r);
6997 bfd_put_32 (abfd, BLR, p);
7002 savevr (bfd *abfd, bfd_byte *p, int r)
7004 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7006 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
7011 savevr_tail (bfd *abfd, bfd_byte *p, int r)
7013 p = savevr (abfd, p, r);
7014 bfd_put_32 (abfd, BLR, p);
7019 restvr (bfd *abfd, bfd_byte *p, int r)
7021 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7023 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
7028 restvr_tail (bfd *abfd, bfd_byte *p, int r)
7030 p = restvr (abfd, p, r);
7031 bfd_put_32 (abfd, BLR, p);
7035 /* Called via elf_link_hash_traverse to transfer dynamic linking
7036 information on function code symbol entries to their corresponding
7037 function descriptor symbol entries. */
7040 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
7042 struct bfd_link_info *info;
7043 struct ppc_link_hash_table *htab;
7044 struct ppc_link_hash_entry *fh;
7045 struct ppc_link_hash_entry *fdh;
7046 bfd_boolean force_local;
7048 fh = (struct ppc_link_hash_entry *) h;
7049 if (fh->elf.root.type == bfd_link_hash_indirect)
7055 if (fh->elf.root.root.string[0] != '.'
7056 || fh->elf.root.root.string[1] == '\0')
7060 htab = ppc_hash_table (info);
7064 /* Find the corresponding function descriptor symbol. */
7065 fdh = lookup_fdh (fh, htab);
7067 /* Resolve undefined references to dot-symbols as the value
7068 in the function descriptor, if we have one in a regular object.
7069 This is to satisfy cases like ".quad .foo". Calls to functions
7070 in dynamic objects are handled elsewhere. */
7071 if ((fh->elf.root.type == bfd_link_hash_undefined
7072 || fh->elf.root.type == bfd_link_hash_undefweak)
7073 && (fdh->elf.root.type == bfd_link_hash_defined
7074 || fdh->elf.root.type == bfd_link_hash_defweak)
7075 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7076 && opd_entry_value (fdh->elf.root.u.def.section,
7077 fdh->elf.root.u.def.value,
7078 &fh->elf.root.u.def.section,
7079 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7081 fh->elf.root.type = fdh->elf.root.type;
7082 fh->elf.forced_local = 1;
7083 fh->elf.def_regular = fdh->elf.def_regular;
7084 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7087 if (!fh->elf.dynamic)
7089 struct plt_entry *ent;
7091 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7092 if (ent->plt.refcount > 0)
7098 /* Create a descriptor as undefined if necessary. */
7100 && !bfd_link_executable (info)
7101 && (fh->elf.root.type == bfd_link_hash_undefined
7102 || fh->elf.root.type == bfd_link_hash_undefweak))
7104 fdh = make_fdh (info, fh);
7109 /* We can't support overriding of symbols on a fake descriptor. */
7112 && (fh->elf.root.type == bfd_link_hash_defined
7113 || fh->elf.root.type == bfd_link_hash_defweak))
7114 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7116 /* Transfer dynamic linking information to the function descriptor. */
7119 fdh->elf.ref_regular |= fh->elf.ref_regular;
7120 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7121 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7122 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7123 fdh->elf.dynamic |= fh->elf.dynamic;
7124 fdh->elf.needs_plt |= (fh->elf.needs_plt
7125 || fh->elf.type == STT_FUNC
7126 || fh->elf.type == STT_GNU_IFUNC);
7127 move_plt_plist (fh, fdh);
7129 if (!fdh->elf.forced_local
7130 && fh->elf.dynindx != -1)
7131 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7135 /* Now that the info is on the function descriptor, clear the
7136 function code sym info. Any function code syms for which we
7137 don't have a definition in a regular file, we force local.
7138 This prevents a shared library from exporting syms that have
7139 been imported from another library. Function code syms that
7140 are really in the library we must leave global to prevent the
7141 linker dragging in a definition from a static library. */
7142 force_local = (!fh->elf.def_regular
7144 || !fdh->elf.def_regular
7145 || fdh->elf.forced_local);
7146 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7151 static const struct sfpr_def_parms save_res_funcs[] =
7153 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7154 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7155 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7156 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7157 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7158 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7159 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7160 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7161 { "._savef", 14, 31, savefpr, savefpr1_tail },
7162 { "._restf", 14, 31, restfpr, restfpr1_tail },
7163 { "_savevr_", 20, 31, savevr, savevr_tail },
7164 { "_restvr_", 20, 31, restvr, restvr_tail }
7167 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7168 this hook to a) provide some gcc support functions, and b) transfer
7169 dynamic linking information gathered so far on function code symbol
7170 entries, to their corresponding function descriptor symbol entries. */
7173 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7174 struct bfd_link_info *info)
7176 struct ppc_link_hash_table *htab;
7178 htab = ppc_hash_table (info);
7182 /* Provide any missing _save* and _rest* functions. */
7183 if (htab->sfpr != NULL)
7187 htab->sfpr->size = 0;
7188 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7189 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7191 if (htab->sfpr->size == 0)
7192 htab->sfpr->flags |= SEC_EXCLUDE;
7195 if (bfd_link_relocatable (info))
7198 if (htab->elf.hgot != NULL)
7200 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7201 /* Make .TOC. defined so as to prevent it being made dynamic.
7202 The wrong value here is fixed later in ppc64_elf_set_toc. */
7203 if (!htab->elf.hgot->def_regular
7204 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7206 htab->elf.hgot->root.type = bfd_link_hash_defined;
7207 htab->elf.hgot->root.u.def.value = 0;
7208 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7209 htab->elf.hgot->def_regular = 1;
7210 htab->elf.hgot->root.linker_def = 1;
7212 htab->elf.hgot->type = STT_OBJECT;
7213 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7217 if (htab->need_func_desc_adj)
7219 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7220 htab->need_func_desc_adj = 0;
7226 /* Return true if we have dynamic relocs against H that apply to
7227 read-only sections. */
7230 readonly_dynrelocs (struct elf_link_hash_entry *h)
7232 struct ppc_link_hash_entry *eh;
7233 struct elf_dyn_relocs *p;
7235 eh = (struct ppc_link_hash_entry *) h;
7236 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7238 asection *s = p->sec->output_section;
7240 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7246 /* Return true if we have dynamic relocs against H or any of its weak
7247 aliases, that apply to read-only sections. */
7250 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7252 struct ppc_link_hash_entry *eh;
7254 eh = (struct ppc_link_hash_entry *) h;
7257 if (readonly_dynrelocs (&eh->elf))
7260 } while (eh != NULL && &eh->elf != h);
7265 /* Return whether EH has pc-relative dynamic relocs. */
7268 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7270 struct elf_dyn_relocs *p;
7272 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7273 if (p->pc_count != 0)
7278 /* Return true if a global entry stub will be created for H. Valid
7279 for ELFv2 before plt entries have been allocated. */
7282 global_entry_stub (struct elf_link_hash_entry *h)
7284 struct plt_entry *pent;
7286 if (!h->pointer_equality_needed
7290 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7291 if (pent->plt.refcount > 0
7292 && pent->addend == 0)
7298 /* Adjust a symbol defined by a dynamic object and referenced by a
7299 regular object. The current definition is in some section of the
7300 dynamic object, but we're not including those sections. We have to
7301 change the definition to something the rest of the link can
7305 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7306 struct elf_link_hash_entry *h)
7308 struct ppc_link_hash_table *htab;
7311 htab = ppc_hash_table (info);
7315 /* Deal with function syms. */
7316 if (h->type == STT_FUNC
7317 || h->type == STT_GNU_IFUNC
7320 /* Clear procedure linkage table information for any symbol that
7321 won't need a .plt entry. */
7322 struct plt_entry *ent;
7323 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7324 if (ent->plt.refcount > 0)
7327 || (h->type != STT_GNU_IFUNC
7328 && (SYMBOL_CALLS_LOCAL (info, h)
7329 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
7330 || ((struct ppc_link_hash_entry *) h)->save_res)
7332 h->plt.plist = NULL;
7334 h->pointer_equality_needed = 0;
7336 else if (abiversion (info->output_bfd) >= 2)
7338 /* Taking a function's address in a read/write section
7339 doesn't require us to define the function symbol in the
7340 executable on a global entry stub. A dynamic reloc can
7341 be used instead. The reason we prefer a few more dynamic
7342 relocs is that calling via a global entry stub costs a
7343 few more instructions, and pointer_equality_needed causes
7344 extra work in ld.so when resolving these symbols. */
7345 if (global_entry_stub (h)
7346 && !alias_readonly_dynrelocs (h))
7348 h->pointer_equality_needed = 0;
7349 /* After adjust_dynamic_symbol, non_got_ref set in
7350 the non-pic case means that dyn_relocs for this
7351 symbol should be discarded. */
7355 /* If making a plt entry, then we don't need copy relocs. */
7360 h->plt.plist = NULL;
7362 /* If this is a weak symbol, and there is a real definition, the
7363 processor independent code will have arranged for us to see the
7364 real definition first, and we can just use the same value. */
7365 if (h->u.weakdef != NULL)
7367 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7368 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7369 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7370 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7371 if (ELIMINATE_COPY_RELOCS)
7372 h->non_got_ref = h->u.weakdef->non_got_ref;
7376 /* If we are creating a shared library, we must presume that the
7377 only references to the symbol are via the global offset table.
7378 For such cases we need not do anything here; the relocations will
7379 be handled correctly by relocate_section. */
7380 if (bfd_link_pic (info))
7383 /* If there are no references to this symbol that do not use the
7384 GOT, we don't need to generate a copy reloc. */
7385 if (!h->non_got_ref)
7388 /* Don't generate a copy reloc for symbols defined in the executable. */
7389 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7391 /* If -z nocopyreloc was given, don't generate them either. */
7392 || info->nocopyreloc
7394 /* If we didn't find any dynamic relocs in read-only sections, then
7395 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7396 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7398 /* Protected variables do not work with .dynbss. The copy in
7399 .dynbss won't be used by the shared library with the protected
7400 definition for the variable. Text relocations are preferable
7401 to an incorrect program. */
7402 || h->protected_def)
7408 if (h->plt.plist != NULL)
7410 /* We should never get here, but unfortunately there are versions
7411 of gcc out there that improperly (for this ABI) put initialized
7412 function pointers, vtable refs and suchlike in read-only
7413 sections. Allow them to proceed, but warn that this might
7414 break at runtime. */
7415 info->callbacks->einfo
7416 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7417 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7418 h->root.root.string);
7421 /* This is a reference to a symbol defined by a dynamic object which
7422 is not a function. */
7424 /* We must allocate the symbol in our .dynbss section, which will
7425 become part of the .bss section of the executable. There will be
7426 an entry for this symbol in the .dynsym section. The dynamic
7427 object will contain position independent code, so all references
7428 from the dynamic object to this symbol will go through the global
7429 offset table. The dynamic linker will use the .dynsym entry to
7430 determine the address it must put in the global offset table, so
7431 both the dynamic object and the regular object will refer to the
7432 same memory location for the variable. */
7434 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7435 to copy the initial value out of the dynamic object and into the
7436 runtime process image. We need to remember the offset into the
7437 .rela.bss section we are going to use. */
7438 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7440 s = htab->elf.sdynrelro;
7441 srel = htab->elf.sreldynrelro;
7445 s = htab->elf.sdynbss;
7446 srel = htab->elf.srelbss;
7448 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7450 srel->size += sizeof (Elf64_External_Rela);
7454 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7457 /* If given a function descriptor symbol, hide both the function code
7458 sym and the descriptor. */
7460 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7461 struct elf_link_hash_entry *h,
7462 bfd_boolean force_local)
7464 struct ppc_link_hash_entry *eh;
7465 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7467 eh = (struct ppc_link_hash_entry *) h;
7468 if (eh->is_func_descriptor)
7470 struct ppc_link_hash_entry *fh = eh->oh;
7475 struct elf_link_hash_table *htab = elf_hash_table (info);
7478 /* We aren't supposed to use alloca in BFD because on
7479 systems which do not have alloca the version in libiberty
7480 calls xmalloc, which might cause the program to crash
7481 when it runs out of memory. This function doesn't have a
7482 return status, so there's no way to gracefully return an
7483 error. So cheat. We know that string[-1] can be safely
7484 accessed; It's either a string in an ELF string table,
7485 or allocated in an objalloc structure. */
7487 p = eh->elf.root.root.string - 1;
7490 fh = (struct ppc_link_hash_entry *)
7491 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7494 /* Unfortunately, if it so happens that the string we were
7495 looking for was allocated immediately before this string,
7496 then we overwrote the string terminator. That's the only
7497 reason the lookup should fail. */
7500 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7501 while (q >= eh->elf.root.root.string && *q == *p)
7503 if (q < eh->elf.root.root.string && *p == '.')
7504 fh = (struct ppc_link_hash_entry *)
7505 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7514 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7519 get_sym_h (struct elf_link_hash_entry **hp,
7520 Elf_Internal_Sym **symp,
7522 unsigned char **tls_maskp,
7523 Elf_Internal_Sym **locsymsp,
7524 unsigned long r_symndx,
7527 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7529 if (r_symndx >= symtab_hdr->sh_info)
7531 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7532 struct elf_link_hash_entry *h;
7534 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7535 h = elf_follow_link (h);
7543 if (symsecp != NULL)
7545 asection *symsec = NULL;
7546 if (h->root.type == bfd_link_hash_defined
7547 || h->root.type == bfd_link_hash_defweak)
7548 symsec = h->root.u.def.section;
7552 if (tls_maskp != NULL)
7554 struct ppc_link_hash_entry *eh;
7556 eh = (struct ppc_link_hash_entry *) h;
7557 *tls_maskp = &eh->tls_mask;
7562 Elf_Internal_Sym *sym;
7563 Elf_Internal_Sym *locsyms = *locsymsp;
7565 if (locsyms == NULL)
7567 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7568 if (locsyms == NULL)
7569 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7570 symtab_hdr->sh_info,
7571 0, NULL, NULL, NULL);
7572 if (locsyms == NULL)
7574 *locsymsp = locsyms;
7576 sym = locsyms + r_symndx;
7584 if (symsecp != NULL)
7585 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7587 if (tls_maskp != NULL)
7589 struct got_entry **lgot_ents;
7590 unsigned char *tls_mask;
7593 lgot_ents = elf_local_got_ents (ibfd);
7594 if (lgot_ents != NULL)
7596 struct plt_entry **local_plt = (struct plt_entry **)
7597 (lgot_ents + symtab_hdr->sh_info);
7598 unsigned char *lgot_masks = (unsigned char *)
7599 (local_plt + symtab_hdr->sh_info);
7600 tls_mask = &lgot_masks[r_symndx];
7602 *tls_maskp = tls_mask;
7608 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7609 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7610 type suitable for optimization, and 1 otherwise. */
7613 get_tls_mask (unsigned char **tls_maskp,
7614 unsigned long *toc_symndx,
7615 bfd_vma *toc_addend,
7616 Elf_Internal_Sym **locsymsp,
7617 const Elf_Internal_Rela *rel,
7620 unsigned long r_symndx;
7622 struct elf_link_hash_entry *h;
7623 Elf_Internal_Sym *sym;
7627 r_symndx = ELF64_R_SYM (rel->r_info);
7628 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7631 if ((*tls_maskp != NULL && **tls_maskp != 0)
7633 || ppc64_elf_section_data (sec) == NULL
7634 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7637 /* Look inside a TOC section too. */
7640 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7641 off = h->root.u.def.value;
7644 off = sym->st_value;
7645 off += rel->r_addend;
7646 BFD_ASSERT (off % 8 == 0);
7647 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7648 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7649 if (toc_symndx != NULL)
7650 *toc_symndx = r_symndx;
7651 if (toc_addend != NULL)
7652 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7653 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7655 if ((h == NULL || is_static_defined (h))
7656 && (next_r == -1 || next_r == -2))
7661 /* Find (or create) an entry in the tocsave hash table. */
7663 static struct tocsave_entry *
7664 tocsave_find (struct ppc_link_hash_table *htab,
7665 enum insert_option insert,
7666 Elf_Internal_Sym **local_syms,
7667 const Elf_Internal_Rela *irela,
7670 unsigned long r_indx;
7671 struct elf_link_hash_entry *h;
7672 Elf_Internal_Sym *sym;
7673 struct tocsave_entry ent, *p;
7675 struct tocsave_entry **slot;
7677 r_indx = ELF64_R_SYM (irela->r_info);
7678 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7680 if (ent.sec == NULL || ent.sec->output_section == NULL)
7683 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7688 ent.offset = h->root.u.def.value;
7690 ent.offset = sym->st_value;
7691 ent.offset += irela->r_addend;
7693 hash = tocsave_htab_hash (&ent);
7694 slot = ((struct tocsave_entry **)
7695 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7701 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7710 /* Adjust all global syms defined in opd sections. In gcc generated
7711 code for the old ABI, these will already have been done. */
7714 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7716 struct ppc_link_hash_entry *eh;
7718 struct _opd_sec_data *opd;
7720 if (h->root.type == bfd_link_hash_indirect)
7723 if (h->root.type != bfd_link_hash_defined
7724 && h->root.type != bfd_link_hash_defweak)
7727 eh = (struct ppc_link_hash_entry *) h;
7728 if (eh->adjust_done)
7731 sym_sec = eh->elf.root.u.def.section;
7732 opd = get_opd_info (sym_sec);
7733 if (opd != NULL && opd->adjust != NULL)
7735 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7738 /* This entry has been deleted. */
7739 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7742 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7743 if (discarded_section (dsec))
7745 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7749 eh->elf.root.u.def.value = 0;
7750 eh->elf.root.u.def.section = dsec;
7753 eh->elf.root.u.def.value += adjust;
7754 eh->adjust_done = 1;
7759 /* Handles decrementing dynamic reloc counts for the reloc specified by
7760 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7761 have already been determined. */
7764 dec_dynrel_count (bfd_vma r_info,
7766 struct bfd_link_info *info,
7767 Elf_Internal_Sym **local_syms,
7768 struct elf_link_hash_entry *h,
7769 Elf_Internal_Sym *sym)
7771 enum elf_ppc64_reloc_type r_type;
7772 asection *sym_sec = NULL;
7774 /* Can this reloc be dynamic? This switch, and later tests here
7775 should be kept in sync with the code in check_relocs. */
7776 r_type = ELF64_R_TYPE (r_info);
7782 case R_PPC64_TPREL16:
7783 case R_PPC64_TPREL16_LO:
7784 case R_PPC64_TPREL16_HI:
7785 case R_PPC64_TPREL16_HA:
7786 case R_PPC64_TPREL16_DS:
7787 case R_PPC64_TPREL16_LO_DS:
7788 case R_PPC64_TPREL16_HIGH:
7789 case R_PPC64_TPREL16_HIGHA:
7790 case R_PPC64_TPREL16_HIGHER:
7791 case R_PPC64_TPREL16_HIGHERA:
7792 case R_PPC64_TPREL16_HIGHEST:
7793 case R_PPC64_TPREL16_HIGHESTA:
7794 if (!bfd_link_pic (info))
7797 case R_PPC64_TPREL64:
7798 case R_PPC64_DTPMOD64:
7799 case R_PPC64_DTPREL64:
7800 case R_PPC64_ADDR64:
7804 case R_PPC64_ADDR14:
7805 case R_PPC64_ADDR14_BRNTAKEN:
7806 case R_PPC64_ADDR14_BRTAKEN:
7807 case R_PPC64_ADDR16:
7808 case R_PPC64_ADDR16_DS:
7809 case R_PPC64_ADDR16_HA:
7810 case R_PPC64_ADDR16_HI:
7811 case R_PPC64_ADDR16_HIGH:
7812 case R_PPC64_ADDR16_HIGHA:
7813 case R_PPC64_ADDR16_HIGHER:
7814 case R_PPC64_ADDR16_HIGHERA:
7815 case R_PPC64_ADDR16_HIGHEST:
7816 case R_PPC64_ADDR16_HIGHESTA:
7817 case R_PPC64_ADDR16_LO:
7818 case R_PPC64_ADDR16_LO_DS:
7819 case R_PPC64_ADDR24:
7820 case R_PPC64_ADDR32:
7821 case R_PPC64_UADDR16:
7822 case R_PPC64_UADDR32:
7823 case R_PPC64_UADDR64:
7828 if (local_syms != NULL)
7830 unsigned long r_symndx;
7831 bfd *ibfd = sec->owner;
7833 r_symndx = ELF64_R_SYM (r_info);
7834 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7838 if ((bfd_link_pic (info)
7839 && (must_be_dyn_reloc (info, r_type)
7841 && (!SYMBOLIC_BIND (info, h)
7842 || h->root.type == bfd_link_hash_defweak
7843 || !h->def_regular))))
7844 || (ELIMINATE_COPY_RELOCS
7845 && !bfd_link_pic (info)
7847 && (h->root.type == bfd_link_hash_defweak
7848 || !h->def_regular)))
7855 struct elf_dyn_relocs *p;
7856 struct elf_dyn_relocs **pp;
7857 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7859 /* elf_gc_sweep may have already removed all dyn relocs associated
7860 with local syms for a given section. Also, symbol flags are
7861 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7862 report a dynreloc miscount. */
7863 if (*pp == NULL && info->gc_sections)
7866 while ((p = *pp) != NULL)
7870 if (!must_be_dyn_reloc (info, r_type))
7882 struct ppc_dyn_relocs *p;
7883 struct ppc_dyn_relocs **pp;
7885 bfd_boolean is_ifunc;
7887 if (local_syms == NULL)
7888 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7889 if (sym_sec == NULL)
7892 vpp = &elf_section_data (sym_sec)->local_dynrel;
7893 pp = (struct ppc_dyn_relocs **) vpp;
7895 if (*pp == NULL && info->gc_sections)
7898 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7899 while ((p = *pp) != NULL)
7901 if (p->sec == sec && p->ifunc == is_ifunc)
7912 /* xgettext:c-format */
7913 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7915 bfd_set_error (bfd_error_bad_value);
7919 /* Remove unused Official Procedure Descriptor entries. Currently we
7920 only remove those associated with functions in discarded link-once
7921 sections, or weakly defined functions that have been overridden. It
7922 would be possible to remove many more entries for statically linked
7926 ppc64_elf_edit_opd (struct bfd_link_info *info)
7929 bfd_boolean some_edited = FALSE;
7930 asection *need_pad = NULL;
7931 struct ppc_link_hash_table *htab;
7933 htab = ppc_hash_table (info);
7937 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7940 Elf_Internal_Rela *relstart, *rel, *relend;
7941 Elf_Internal_Shdr *symtab_hdr;
7942 Elf_Internal_Sym *local_syms;
7943 struct _opd_sec_data *opd;
7944 bfd_boolean need_edit, add_aux_fields, broken;
7945 bfd_size_type cnt_16b = 0;
7947 if (!is_ppc64_elf (ibfd))
7950 sec = bfd_get_section_by_name (ibfd, ".opd");
7951 if (sec == NULL || sec->size == 0)
7954 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7957 if (sec->output_section == bfd_abs_section_ptr)
7960 /* Look through the section relocs. */
7961 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7965 symtab_hdr = &elf_symtab_hdr (ibfd);
7967 /* Read the relocations. */
7968 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7970 if (relstart == NULL)
7973 /* First run through the relocs to check they are sane, and to
7974 determine whether we need to edit this opd section. */
7978 relend = relstart + sec->reloc_count;
7979 for (rel = relstart; rel < relend; )
7981 enum elf_ppc64_reloc_type r_type;
7982 unsigned long r_symndx;
7984 struct elf_link_hash_entry *h;
7985 Elf_Internal_Sym *sym;
7988 /* .opd contains an array of 16 or 24 byte entries. We're
7989 only interested in the reloc pointing to a function entry
7991 offset = rel->r_offset;
7992 if (rel + 1 == relend
7993 || rel[1].r_offset != offset + 8)
7995 /* If someone messes with .opd alignment then after a
7996 "ld -r" we might have padding in the middle of .opd.
7997 Also, there's nothing to prevent someone putting
7998 something silly in .opd with the assembler. No .opd
7999 optimization for them! */
8002 (_("%B: .opd is not a regular array of opd entries"), ibfd);
8007 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
8008 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
8011 /* xgettext:c-format */
8012 (_("%B: unexpected reloc type %u in .opd section"),
8018 r_symndx = ELF64_R_SYM (rel->r_info);
8019 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8023 if (sym_sec == NULL || sym_sec->owner == NULL)
8025 const char *sym_name;
8027 sym_name = h->root.root.string;
8029 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8033 /* xgettext:c-format */
8034 (_("%B: undefined sym `%s' in .opd section"),
8040 /* opd entries are always for functions defined in the
8041 current input bfd. If the symbol isn't defined in the
8042 input bfd, then we won't be using the function in this
8043 bfd; It must be defined in a linkonce section in another
8044 bfd, or is weak. It's also possible that we are
8045 discarding the function due to a linker script /DISCARD/,
8046 which we test for via the output_section. */
8047 if (sym_sec->owner != ibfd
8048 || sym_sec->output_section == bfd_abs_section_ptr)
8052 if (rel + 1 == relend
8053 || (rel + 2 < relend
8054 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
8059 if (sec->size == offset + 24)
8064 if (sec->size == offset + 16)
8071 else if (rel + 1 < relend
8072 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8073 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8075 if (rel[0].r_offset == offset + 16)
8077 else if (rel[0].r_offset != offset + 24)
8084 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8086 if (!broken && (need_edit || add_aux_fields))
8088 Elf_Internal_Rela *write_rel;
8089 Elf_Internal_Shdr *rel_hdr;
8090 bfd_byte *rptr, *wptr;
8091 bfd_byte *new_contents;
8094 new_contents = NULL;
8095 amt = OPD_NDX (sec->size) * sizeof (long);
8096 opd = &ppc64_elf_section_data (sec)->u.opd;
8097 opd->adjust = bfd_zalloc (sec->owner, amt);
8098 if (opd->adjust == NULL)
8100 ppc64_elf_section_data (sec)->sec_type = sec_opd;
8102 /* This seems a waste of time as input .opd sections are all
8103 zeros as generated by gcc, but I suppose there's no reason
8104 this will always be so. We might start putting something in
8105 the third word of .opd entries. */
8106 if ((sec->flags & SEC_IN_MEMORY) == 0)
8109 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8114 if (local_syms != NULL
8115 && symtab_hdr->contents != (unsigned char *) local_syms)
8117 if (elf_section_data (sec)->relocs != relstart)
8121 sec->contents = loc;
8122 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8125 elf_section_data (sec)->relocs = relstart;
8127 new_contents = sec->contents;
8130 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8131 if (new_contents == NULL)
8135 wptr = new_contents;
8136 rptr = sec->contents;
8137 write_rel = relstart;
8138 for (rel = relstart; rel < relend; )
8140 unsigned long r_symndx;
8142 struct elf_link_hash_entry *h;
8143 struct ppc_link_hash_entry *fdh = NULL;
8144 Elf_Internal_Sym *sym;
8146 Elf_Internal_Rela *next_rel;
8149 r_symndx = ELF64_R_SYM (rel->r_info);
8150 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8155 if (next_rel + 1 == relend
8156 || (next_rel + 2 < relend
8157 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8160 /* See if the .opd entry is full 24 byte or
8161 16 byte (with fd_aux entry overlapped with next
8164 if (next_rel == relend)
8166 if (sec->size == rel->r_offset + 16)
8169 else if (next_rel->r_offset == rel->r_offset + 16)
8173 && h->root.root.string[0] == '.')
8175 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8178 fdh = ppc_follow_link (fdh);
8179 if (fdh->elf.root.type != bfd_link_hash_defined
8180 && fdh->elf.root.type != bfd_link_hash_defweak)
8185 skip = (sym_sec->owner != ibfd
8186 || sym_sec->output_section == bfd_abs_section_ptr);
8189 if (fdh != NULL && sym_sec->owner == ibfd)
8191 /* Arrange for the function descriptor sym
8193 fdh->elf.root.u.def.value = 0;
8194 fdh->elf.root.u.def.section = sym_sec;
8196 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8198 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8203 if (!dec_dynrel_count (rel->r_info, sec, info,
8207 if (++rel == next_rel)
8210 r_symndx = ELF64_R_SYM (rel->r_info);
8211 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8218 /* We'll be keeping this opd entry. */
8223 /* Redefine the function descriptor symbol to
8224 this location in the opd section. It is
8225 necessary to update the value here rather
8226 than using an array of adjustments as we do
8227 for local symbols, because various places
8228 in the generic ELF code use the value
8229 stored in u.def.value. */
8230 fdh->elf.root.u.def.value = wptr - new_contents;
8231 fdh->adjust_done = 1;
8234 /* Local syms are a bit tricky. We could
8235 tweak them as they can be cached, but
8236 we'd need to look through the local syms
8237 for the function descriptor sym which we
8238 don't have at the moment. So keep an
8239 array of adjustments. */
8240 adjust = (wptr - new_contents) - (rptr - sec->contents);
8241 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8244 memcpy (wptr, rptr, opd_ent_size);
8245 wptr += opd_ent_size;
8246 if (add_aux_fields && opd_ent_size == 16)
8248 memset (wptr, '\0', 8);
8252 /* We need to adjust any reloc offsets to point to the
8254 for ( ; rel != next_rel; ++rel)
8256 rel->r_offset += adjust;
8257 if (write_rel != rel)
8258 memcpy (write_rel, rel, sizeof (*rel));
8263 rptr += opd_ent_size;
8266 sec->size = wptr - new_contents;
8267 sec->reloc_count = write_rel - relstart;
8270 free (sec->contents);
8271 sec->contents = new_contents;
8274 /* Fudge the header size too, as this is used later in
8275 elf_bfd_final_link if we are emitting relocs. */
8276 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8277 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8280 else if (elf_section_data (sec)->relocs != relstart)
8283 if (local_syms != NULL
8284 && symtab_hdr->contents != (unsigned char *) local_syms)
8286 if (!info->keep_memory)
8289 symtab_hdr->contents = (unsigned char *) local_syms;
8294 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8296 /* If we are doing a final link and the last .opd entry is just 16 byte
8297 long, add a 8 byte padding after it. */
8298 if (need_pad != NULL && !bfd_link_relocatable (info))
8302 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8304 BFD_ASSERT (need_pad->size > 0);
8306 p = bfd_malloc (need_pad->size + 8);
8310 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8311 p, 0, need_pad->size))
8314 need_pad->contents = p;
8315 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8319 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8323 need_pad->contents = p;
8326 memset (need_pad->contents + need_pad->size, 0, 8);
8327 need_pad->size += 8;
8333 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8336 ppc64_elf_tls_setup (struct bfd_link_info *info)
8338 struct ppc_link_hash_table *htab;
8340 htab = ppc_hash_table (info);
8344 if (abiversion (info->output_bfd) == 1)
8347 if (htab->params->no_multi_toc)
8348 htab->do_multi_toc = 0;
8349 else if (!htab->do_multi_toc)
8350 htab->params->no_multi_toc = 1;
8352 if (htab->params->plt_localentry0 < 0)
8353 htab->params->plt_localentry0
8354 = elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8355 FALSE, FALSE, FALSE) != NULL;
8357 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8358 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8359 FALSE, FALSE, TRUE));
8360 /* Move dynamic linking info to the function descriptor sym. */
8361 if (htab->tls_get_addr != NULL)
8362 func_desc_adjust (&htab->tls_get_addr->elf, info);
8363 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8364 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8365 FALSE, FALSE, TRUE));
8366 if (htab->params->tls_get_addr_opt)
8368 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8370 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8371 FALSE, FALSE, TRUE);
8373 func_desc_adjust (opt, info);
8374 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8375 FALSE, FALSE, TRUE);
8377 && (opt_fd->root.type == bfd_link_hash_defined
8378 || opt_fd->root.type == bfd_link_hash_defweak))
8380 /* If glibc supports an optimized __tls_get_addr call stub,
8381 signalled by the presence of __tls_get_addr_opt, and we'll
8382 be calling __tls_get_addr via a plt call stub, then
8383 make __tls_get_addr point to __tls_get_addr_opt. */
8384 tga_fd = &htab->tls_get_addr_fd->elf;
8385 if (htab->elf.dynamic_sections_created
8387 && (tga_fd->type == STT_FUNC
8388 || tga_fd->needs_plt)
8389 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8390 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8392 struct plt_entry *ent;
8394 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8395 if (ent->plt.refcount > 0)
8399 tga_fd->root.type = bfd_link_hash_indirect;
8400 tga_fd->root.u.i.link = &opt_fd->root;
8401 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8403 if (opt_fd->dynindx != -1)
8405 /* Use __tls_get_addr_opt in dynamic relocations. */
8406 opt_fd->dynindx = -1;
8407 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8408 opt_fd->dynstr_index);
8409 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8412 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8413 tga = &htab->tls_get_addr->elf;
8414 if (opt != NULL && tga != NULL)
8416 tga->root.type = bfd_link_hash_indirect;
8417 tga->root.u.i.link = &opt->root;
8418 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8420 _bfd_elf_link_hash_hide_symbol (info, opt,
8422 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8424 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8425 htab->tls_get_addr_fd->is_func_descriptor = 1;
8426 if (htab->tls_get_addr != NULL)
8428 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8429 htab->tls_get_addr->is_func = 1;
8434 else if (htab->params->tls_get_addr_opt < 0)
8435 htab->params->tls_get_addr_opt = 0;
8437 return _bfd_elf_tls_setup (info->output_bfd, info);
8440 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8444 branch_reloc_hash_match (const bfd *ibfd,
8445 const Elf_Internal_Rela *rel,
8446 const struct ppc_link_hash_entry *hash1,
8447 const struct ppc_link_hash_entry *hash2)
8449 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8450 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8451 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8453 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8455 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8456 struct elf_link_hash_entry *h;
8458 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8459 h = elf_follow_link (h);
8460 if (h == &hash1->elf || h == &hash2->elf)
8466 /* Run through all the TLS relocs looking for optimization
8467 opportunities. The linker has been hacked (see ppc64elf.em) to do
8468 a preliminary section layout so that we know the TLS segment
8469 offsets. We can't optimize earlier because some optimizations need
8470 to know the tp offset, and we need to optimize before allocating
8471 dynamic relocations. */
8474 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8478 struct ppc_link_hash_table *htab;
8479 unsigned char *toc_ref;
8482 if (!bfd_link_executable (info))
8485 htab = ppc_hash_table (info);
8489 /* Make two passes over the relocs. On the first pass, mark toc
8490 entries involved with tls relocs, and check that tls relocs
8491 involved in setting up a tls_get_addr call are indeed followed by
8492 such a call. If they are not, we can't do any tls optimization.
8493 On the second pass twiddle tls_mask flags to notify
8494 relocate_section that optimization can be done, and adjust got
8495 and plt refcounts. */
8497 for (pass = 0; pass < 2; ++pass)
8498 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8500 Elf_Internal_Sym *locsyms = NULL;
8501 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8503 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8504 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8506 Elf_Internal_Rela *relstart, *rel, *relend;
8507 bfd_boolean found_tls_get_addr_arg = 0;
8509 /* Read the relocations. */
8510 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8512 if (relstart == NULL)
8518 relend = relstart + sec->reloc_count;
8519 for (rel = relstart; rel < relend; rel++)
8521 enum elf_ppc64_reloc_type r_type;
8522 unsigned long r_symndx;
8523 struct elf_link_hash_entry *h;
8524 Elf_Internal_Sym *sym;
8526 unsigned char *tls_mask;
8527 unsigned char tls_set, tls_clear, tls_type = 0;
8529 bfd_boolean ok_tprel, is_local;
8530 long toc_ref_index = 0;
8531 int expecting_tls_get_addr = 0;
8532 bfd_boolean ret = FALSE;
8534 r_symndx = ELF64_R_SYM (rel->r_info);
8535 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8539 if (elf_section_data (sec)->relocs != relstart)
8541 if (toc_ref != NULL)
8544 && (elf_symtab_hdr (ibfd).contents
8545 != (unsigned char *) locsyms))
8552 if (h->root.type == bfd_link_hash_defined
8553 || h->root.type == bfd_link_hash_defweak)
8554 value = h->root.u.def.value;
8555 else if (h->root.type == bfd_link_hash_undefweak)
8559 found_tls_get_addr_arg = 0;
8564 /* Symbols referenced by TLS relocs must be of type
8565 STT_TLS. So no need for .opd local sym adjust. */
8566 value = sym->st_value;
8575 && h->root.type == bfd_link_hash_undefweak)
8577 else if (sym_sec != NULL
8578 && sym_sec->output_section != NULL)
8580 value += sym_sec->output_offset;
8581 value += sym_sec->output_section->vma;
8582 value -= htab->elf.tls_sec->vma;
8583 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8584 < (bfd_vma) 1 << 32);
8588 r_type = ELF64_R_TYPE (rel->r_info);
8589 /* If this section has old-style __tls_get_addr calls
8590 without marker relocs, then check that each
8591 __tls_get_addr call reloc is preceded by a reloc
8592 that conceivably belongs to the __tls_get_addr arg
8593 setup insn. If we don't find matching arg setup
8594 relocs, don't do any tls optimization. */
8596 && sec->has_tls_get_addr_call
8598 && (h == &htab->tls_get_addr->elf
8599 || h == &htab->tls_get_addr_fd->elf)
8600 && !found_tls_get_addr_arg
8601 && is_branch_reloc (r_type))
8603 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8604 "TLS optimization disabled\n"),
8605 ibfd, sec, rel->r_offset);
8610 found_tls_get_addr_arg = 0;
8613 case R_PPC64_GOT_TLSLD16:
8614 case R_PPC64_GOT_TLSLD16_LO:
8615 expecting_tls_get_addr = 1;
8616 found_tls_get_addr_arg = 1;
8619 case R_PPC64_GOT_TLSLD16_HI:
8620 case R_PPC64_GOT_TLSLD16_HA:
8621 /* These relocs should never be against a symbol
8622 defined in a shared lib. Leave them alone if
8623 that turns out to be the case. */
8630 tls_type = TLS_TLS | TLS_LD;
8633 case R_PPC64_GOT_TLSGD16:
8634 case R_PPC64_GOT_TLSGD16_LO:
8635 expecting_tls_get_addr = 1;
8636 found_tls_get_addr_arg = 1;
8639 case R_PPC64_GOT_TLSGD16_HI:
8640 case R_PPC64_GOT_TLSGD16_HA:
8646 tls_set = TLS_TLS | TLS_TPRELGD;
8648 tls_type = TLS_TLS | TLS_GD;
8651 case R_PPC64_GOT_TPREL16_DS:
8652 case R_PPC64_GOT_TPREL16_LO_DS:
8653 case R_PPC64_GOT_TPREL16_HI:
8654 case R_PPC64_GOT_TPREL16_HA:
8659 tls_clear = TLS_TPREL;
8660 tls_type = TLS_TLS | TLS_TPREL;
8667 found_tls_get_addr_arg = 1;
8672 case R_PPC64_TOC16_LO:
8673 if (sym_sec == NULL || sym_sec != toc)
8676 /* Mark this toc entry as referenced by a TLS
8677 code sequence. We can do that now in the
8678 case of R_PPC64_TLS, and after checking for
8679 tls_get_addr for the TOC16 relocs. */
8680 if (toc_ref == NULL)
8681 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8682 if (toc_ref == NULL)
8686 value = h->root.u.def.value;
8688 value = sym->st_value;
8689 value += rel->r_addend;
8692 BFD_ASSERT (value < toc->size
8693 && toc->output_offset % 8 == 0);
8694 toc_ref_index = (value + toc->output_offset) / 8;
8695 if (r_type == R_PPC64_TLS
8696 || r_type == R_PPC64_TLSGD
8697 || r_type == R_PPC64_TLSLD)
8699 toc_ref[toc_ref_index] = 1;
8703 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8708 expecting_tls_get_addr = 2;
8711 case R_PPC64_TPREL64:
8715 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8720 tls_set = TLS_EXPLICIT;
8721 tls_clear = TLS_TPREL;
8726 case R_PPC64_DTPMOD64:
8730 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8732 if (rel + 1 < relend
8734 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8735 && rel[1].r_offset == rel->r_offset + 8)
8739 tls_set = TLS_EXPLICIT | TLS_GD;
8742 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8751 tls_set = TLS_EXPLICIT;
8762 if (!expecting_tls_get_addr
8763 || !sec->has_tls_get_addr_call)
8766 if (rel + 1 < relend
8767 && branch_reloc_hash_match (ibfd, rel + 1,
8769 htab->tls_get_addr_fd))
8771 if (expecting_tls_get_addr == 2)
8773 /* Check for toc tls entries. */
8774 unsigned char *toc_tls;
8777 retval = get_tls_mask (&toc_tls, NULL, NULL,
8782 if (toc_tls != NULL)
8784 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8785 found_tls_get_addr_arg = 1;
8787 toc_ref[toc_ref_index] = 1;
8793 if (expecting_tls_get_addr != 1)
8796 /* Uh oh, we didn't find the expected call. We
8797 could just mark this symbol to exclude it
8798 from tls optimization but it's safer to skip
8799 the entire optimization. */
8800 /* xgettext:c-format */
8801 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8802 "TLS optimization disabled\n"),
8803 ibfd, sec, rel->r_offset);
8808 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8810 struct plt_entry *ent;
8811 for (ent = htab->tls_get_addr->elf.plt.plist;
8814 if (ent->addend == 0)
8816 if (ent->plt.refcount > 0)
8818 ent->plt.refcount -= 1;
8819 expecting_tls_get_addr = 0;
8825 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8827 struct plt_entry *ent;
8828 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8831 if (ent->addend == 0)
8833 if (ent->plt.refcount > 0)
8834 ent->plt.refcount -= 1;
8842 if ((tls_set & TLS_EXPLICIT) == 0)
8844 struct got_entry *ent;
8846 /* Adjust got entry for this reloc. */
8850 ent = elf_local_got_ents (ibfd)[r_symndx];
8852 for (; ent != NULL; ent = ent->next)
8853 if (ent->addend == rel->r_addend
8854 && ent->owner == ibfd
8855 && ent->tls_type == tls_type)
8862 /* We managed to get rid of a got entry. */
8863 if (ent->got.refcount > 0)
8864 ent->got.refcount -= 1;
8869 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8870 we'll lose one or two dyn relocs. */
8871 if (!dec_dynrel_count (rel->r_info, sec, info,
8875 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8877 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8883 *tls_mask |= tls_set;
8884 *tls_mask &= ~tls_clear;
8887 if (elf_section_data (sec)->relocs != relstart)
8892 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8894 if (!info->keep_memory)
8897 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8901 if (toc_ref != NULL)
8906 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8907 the values of any global symbols in a toc section that has been
8908 edited. Globals in toc sections should be a rarity, so this function
8909 sets a flag if any are found in toc sections other than the one just
8910 edited, so that further hash table traversals can be avoided. */
8912 struct adjust_toc_info
8915 unsigned long *skip;
8916 bfd_boolean global_toc_syms;
8919 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8922 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8924 struct ppc_link_hash_entry *eh;
8925 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8928 if (h->root.type != bfd_link_hash_defined
8929 && h->root.type != bfd_link_hash_defweak)
8932 eh = (struct ppc_link_hash_entry *) h;
8933 if (eh->adjust_done)
8936 if (eh->elf.root.u.def.section == toc_inf->toc)
8938 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8939 i = toc_inf->toc->rawsize >> 3;
8941 i = eh->elf.root.u.def.value >> 3;
8943 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8946 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8949 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8950 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8953 eh->elf.root.u.def.value -= toc_inf->skip[i];
8954 eh->adjust_done = 1;
8956 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8957 toc_inf->global_toc_syms = TRUE;
8962 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8963 on a _LO variety toc/got reloc. */
8966 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8968 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8969 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8970 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8971 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8972 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8973 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8974 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8975 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8976 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8977 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8978 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8979 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8980 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8981 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8982 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8983 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
8984 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8985 /* Exclude lfqu by testing reloc. If relocs are ever
8986 defined for the reduced D field in psq_lu then those
8987 will need testing too. */
8988 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8989 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
8991 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
8992 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8993 /* Exclude stfqu. psq_stu as above for psq_lu. */
8994 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8995 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
8996 && (insn & 1) == 0));
8999 /* Examine all relocs referencing .toc sections in order to remove
9000 unused .toc entries. */
9003 ppc64_elf_edit_toc (struct bfd_link_info *info)
9006 struct adjust_toc_info toc_inf;
9007 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9009 htab->do_toc_opt = 1;
9010 toc_inf.global_toc_syms = TRUE;
9011 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9013 asection *toc, *sec;
9014 Elf_Internal_Shdr *symtab_hdr;
9015 Elf_Internal_Sym *local_syms;
9016 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
9017 unsigned long *skip, *drop;
9018 unsigned char *used;
9019 unsigned char *keep, last, some_unused;
9021 if (!is_ppc64_elf (ibfd))
9024 toc = bfd_get_section_by_name (ibfd, ".toc");
9027 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
9028 || discarded_section (toc))
9033 symtab_hdr = &elf_symtab_hdr (ibfd);
9035 /* Look at sections dropped from the final link. */
9038 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9040 if (sec->reloc_count == 0
9041 || !discarded_section (sec)
9042 || get_opd_info (sec)
9043 || (sec->flags & SEC_ALLOC) == 0
9044 || (sec->flags & SEC_DEBUGGING) != 0)
9047 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
9048 if (relstart == NULL)
9051 /* Run through the relocs to see which toc entries might be
9053 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9055 enum elf_ppc64_reloc_type r_type;
9056 unsigned long r_symndx;
9058 struct elf_link_hash_entry *h;
9059 Elf_Internal_Sym *sym;
9062 r_type = ELF64_R_TYPE (rel->r_info);
9069 case R_PPC64_TOC16_LO:
9070 case R_PPC64_TOC16_HI:
9071 case R_PPC64_TOC16_HA:
9072 case R_PPC64_TOC16_DS:
9073 case R_PPC64_TOC16_LO_DS:
9077 r_symndx = ELF64_R_SYM (rel->r_info);
9078 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9086 val = h->root.u.def.value;
9088 val = sym->st_value;
9089 val += rel->r_addend;
9091 if (val >= toc->size)
9094 /* Anything in the toc ought to be aligned to 8 bytes.
9095 If not, don't mark as unused. */
9101 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9106 skip[val >> 3] = ref_from_discarded;
9109 if (elf_section_data (sec)->relocs != relstart)
9113 /* For largetoc loads of address constants, we can convert
9114 . addis rx,2,addr@got@ha
9115 . ld ry,addr@got@l(rx)
9117 . addis rx,2,addr@toc@ha
9118 . addi ry,rx,addr@toc@l
9119 when addr is within 2G of the toc pointer. This then means
9120 that the word storing "addr" in the toc is no longer needed. */
9122 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9123 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9124 && toc->reloc_count != 0)
9126 /* Read toc relocs. */
9127 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9129 if (toc_relocs == NULL)
9132 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9134 enum elf_ppc64_reloc_type r_type;
9135 unsigned long r_symndx;
9137 struct elf_link_hash_entry *h;
9138 Elf_Internal_Sym *sym;
9141 r_type = ELF64_R_TYPE (rel->r_info);
9142 if (r_type != R_PPC64_ADDR64)
9145 r_symndx = ELF64_R_SYM (rel->r_info);
9146 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9151 || sym_sec->output_section == NULL
9152 || discarded_section (sym_sec))
9155 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9160 if (h->type == STT_GNU_IFUNC)
9162 val = h->root.u.def.value;
9166 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9168 val = sym->st_value;
9170 val += rel->r_addend;
9171 val += sym_sec->output_section->vma + sym_sec->output_offset;
9173 /* We don't yet know the exact toc pointer value, but we
9174 know it will be somewhere in the toc section. Don't
9175 optimize if the difference from any possible toc
9176 pointer is outside [ff..f80008000, 7fff7fff]. */
9177 addr = toc->output_section->vma + TOC_BASE_OFF;
9178 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9181 addr = toc->output_section->vma + toc->output_section->rawsize;
9182 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9187 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9192 skip[rel->r_offset >> 3]
9193 |= can_optimize | ((rel - toc_relocs) << 2);
9200 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9204 if (local_syms != NULL
9205 && symtab_hdr->contents != (unsigned char *) local_syms)
9209 && elf_section_data (sec)->relocs != relstart)
9211 if (toc_relocs != NULL
9212 && elf_section_data (toc)->relocs != toc_relocs)
9219 /* Now check all kept sections that might reference the toc.
9220 Check the toc itself last. */
9221 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9224 sec = (sec == toc ? NULL
9225 : sec->next == NULL ? toc
9226 : sec->next == toc && toc->next ? toc->next
9231 if (sec->reloc_count == 0
9232 || discarded_section (sec)
9233 || get_opd_info (sec)
9234 || (sec->flags & SEC_ALLOC) == 0
9235 || (sec->flags & SEC_DEBUGGING) != 0)
9238 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9240 if (relstart == NULL)
9246 /* Mark toc entries referenced as used. */
9250 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9252 enum elf_ppc64_reloc_type r_type;
9253 unsigned long r_symndx;
9255 struct elf_link_hash_entry *h;
9256 Elf_Internal_Sym *sym;
9258 enum {no_check, check_lo, check_ha} insn_check;
9260 r_type = ELF64_R_TYPE (rel->r_info);
9264 insn_check = no_check;
9267 case R_PPC64_GOT_TLSLD16_HA:
9268 case R_PPC64_GOT_TLSGD16_HA:
9269 case R_PPC64_GOT_TPREL16_HA:
9270 case R_PPC64_GOT_DTPREL16_HA:
9271 case R_PPC64_GOT16_HA:
9272 case R_PPC64_TOC16_HA:
9273 insn_check = check_ha;
9276 case R_PPC64_GOT_TLSLD16_LO:
9277 case R_PPC64_GOT_TLSGD16_LO:
9278 case R_PPC64_GOT_TPREL16_LO_DS:
9279 case R_PPC64_GOT_DTPREL16_LO_DS:
9280 case R_PPC64_GOT16_LO:
9281 case R_PPC64_GOT16_LO_DS:
9282 case R_PPC64_TOC16_LO:
9283 case R_PPC64_TOC16_LO_DS:
9284 insn_check = check_lo;
9288 if (insn_check != no_check)
9290 bfd_vma off = rel->r_offset & ~3;
9291 unsigned char buf[4];
9294 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9299 insn = bfd_get_32 (ibfd, buf);
9300 if (insn_check == check_lo
9301 ? !ok_lo_toc_insn (insn, r_type)
9302 : ((insn & ((0x3f << 26) | 0x1f << 16))
9303 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9307 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9308 sprintf (str, "%#08x", insn);
9309 info->callbacks->einfo
9310 /* xgettext:c-format */
9311 (_("%H: toc optimization is not supported for"
9312 " %s instruction.\n"),
9313 ibfd, sec, rel->r_offset & ~3, str);
9320 case R_PPC64_TOC16_LO:
9321 case R_PPC64_TOC16_HI:
9322 case R_PPC64_TOC16_HA:
9323 case R_PPC64_TOC16_DS:
9324 case R_PPC64_TOC16_LO_DS:
9325 /* In case we're taking addresses of toc entries. */
9326 case R_PPC64_ADDR64:
9333 r_symndx = ELF64_R_SYM (rel->r_info);
9334 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9345 val = h->root.u.def.value;
9347 val = sym->st_value;
9348 val += rel->r_addend;
9350 if (val >= toc->size)
9353 if ((skip[val >> 3] & can_optimize) != 0)
9360 case R_PPC64_TOC16_HA:
9363 case R_PPC64_TOC16_LO_DS:
9364 off = rel->r_offset;
9365 off += (bfd_big_endian (ibfd) ? -2 : 3);
9366 if (!bfd_get_section_contents (ibfd, sec, &opc,
9372 if ((opc & (0x3f << 2)) == (58u << 2))
9377 /* Wrong sort of reloc, or not a ld. We may
9378 as well clear ref_from_discarded too. */
9385 /* For the toc section, we only mark as used if this
9386 entry itself isn't unused. */
9387 else if ((used[rel->r_offset >> 3]
9388 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9391 /* Do all the relocs again, to catch reference
9400 if (elf_section_data (sec)->relocs != relstart)
9404 /* Merge the used and skip arrays. Assume that TOC
9405 doublewords not appearing as either used or unused belong
9406 to an entry more than one doubleword in size. */
9407 for (drop = skip, keep = used, last = 0, some_unused = 0;
9408 drop < skip + (toc->size + 7) / 8;
9413 *drop &= ~ref_from_discarded;
9414 if ((*drop & can_optimize) != 0)
9418 else if ((*drop & ref_from_discarded) != 0)
9421 last = ref_from_discarded;
9431 bfd_byte *contents, *src;
9433 Elf_Internal_Sym *sym;
9434 bfd_boolean local_toc_syms = FALSE;
9436 /* Shuffle the toc contents, and at the same time convert the
9437 skip array from booleans into offsets. */
9438 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9441 elf_section_data (toc)->this_hdr.contents = contents;
9443 for (src = contents, off = 0, drop = skip;
9444 src < contents + toc->size;
9447 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9452 memcpy (src - off, src, 8);
9456 toc->rawsize = toc->size;
9457 toc->size = src - contents - off;
9459 /* Adjust addends for relocs against the toc section sym,
9460 and optimize any accesses we can. */
9461 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9463 if (sec->reloc_count == 0
9464 || discarded_section (sec))
9467 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9469 if (relstart == NULL)
9472 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9474 enum elf_ppc64_reloc_type r_type;
9475 unsigned long r_symndx;
9477 struct elf_link_hash_entry *h;
9480 r_type = ELF64_R_TYPE (rel->r_info);
9487 case R_PPC64_TOC16_LO:
9488 case R_PPC64_TOC16_HI:
9489 case R_PPC64_TOC16_HA:
9490 case R_PPC64_TOC16_DS:
9491 case R_PPC64_TOC16_LO_DS:
9492 case R_PPC64_ADDR64:
9496 r_symndx = ELF64_R_SYM (rel->r_info);
9497 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9505 val = h->root.u.def.value;
9508 val = sym->st_value;
9510 local_toc_syms = TRUE;
9513 val += rel->r_addend;
9515 if (val > toc->rawsize)
9517 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9519 else if ((skip[val >> 3] & can_optimize) != 0)
9521 Elf_Internal_Rela *tocrel
9522 = toc_relocs + (skip[val >> 3] >> 2);
9523 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9527 case R_PPC64_TOC16_HA:
9528 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9531 case R_PPC64_TOC16_LO_DS:
9532 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9536 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9538 info->callbacks->einfo
9539 /* xgettext:c-format */
9540 (_("%H: %s references "
9541 "optimized away TOC entry\n"),
9542 ibfd, sec, rel->r_offset,
9543 ppc64_elf_howto_table[r_type]->name);
9544 bfd_set_error (bfd_error_bad_value);
9547 rel->r_addend = tocrel->r_addend;
9548 elf_section_data (sec)->relocs = relstart;
9552 if (h != NULL || sym->st_value != 0)
9555 rel->r_addend -= skip[val >> 3];
9556 elf_section_data (sec)->relocs = relstart;
9559 if (elf_section_data (sec)->relocs != relstart)
9563 /* We shouldn't have local or global symbols defined in the TOC,
9564 but handle them anyway. */
9565 if (local_syms != NULL)
9566 for (sym = local_syms;
9567 sym < local_syms + symtab_hdr->sh_info;
9569 if (sym->st_value != 0
9570 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9574 if (sym->st_value > toc->rawsize)
9575 i = toc->rawsize >> 3;
9577 i = sym->st_value >> 3;
9579 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9583 (_("%s defined on removed toc entry"),
9584 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9587 while ((skip[i] & (ref_from_discarded | can_optimize)));
9588 sym->st_value = (bfd_vma) i << 3;
9591 sym->st_value -= skip[i];
9592 symtab_hdr->contents = (unsigned char *) local_syms;
9595 /* Adjust any global syms defined in this toc input section. */
9596 if (toc_inf.global_toc_syms)
9599 toc_inf.skip = skip;
9600 toc_inf.global_toc_syms = FALSE;
9601 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9605 if (toc->reloc_count != 0)
9607 Elf_Internal_Shdr *rel_hdr;
9608 Elf_Internal_Rela *wrel;
9611 /* Remove unused toc relocs, and adjust those we keep. */
9612 if (toc_relocs == NULL)
9613 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9615 if (toc_relocs == NULL)
9619 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9620 if ((skip[rel->r_offset >> 3]
9621 & (ref_from_discarded | can_optimize)) == 0)
9623 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9624 wrel->r_info = rel->r_info;
9625 wrel->r_addend = rel->r_addend;
9628 else if (!dec_dynrel_count (rel->r_info, toc, info,
9629 &local_syms, NULL, NULL))
9632 elf_section_data (toc)->relocs = toc_relocs;
9633 toc->reloc_count = wrel - toc_relocs;
9634 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9635 sz = rel_hdr->sh_entsize;
9636 rel_hdr->sh_size = toc->reloc_count * sz;
9639 else if (toc_relocs != NULL
9640 && elf_section_data (toc)->relocs != toc_relocs)
9643 if (local_syms != NULL
9644 && symtab_hdr->contents != (unsigned char *) local_syms)
9646 if (!info->keep_memory)
9649 symtab_hdr->contents = (unsigned char *) local_syms;
9657 /* Return true iff input section I references the TOC using
9658 instructions limited to +/-32k offsets. */
9661 ppc64_elf_has_small_toc_reloc (asection *i)
9663 return (is_ppc64_elf (i->owner)
9664 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9667 /* Allocate space for one GOT entry. */
9670 allocate_got (struct elf_link_hash_entry *h,
9671 struct bfd_link_info *info,
9672 struct got_entry *gent)
9674 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9675 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9676 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9678 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9679 ? 2 : 1) * sizeof (Elf64_External_Rela);
9680 asection *got = ppc64_elf_tdata (gent->owner)->got;
9682 gent->got.offset = got->size;
9683 got->size += entsize;
9685 if (h->type == STT_GNU_IFUNC)
9687 htab->elf.irelplt->size += rentsize;
9688 htab->got_reli_size += rentsize;
9690 else if ((bfd_link_pic (info)
9691 || (htab->elf.dynamic_sections_created
9693 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9694 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9696 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9697 relgot->size += rentsize;
9701 /* This function merges got entries in the same toc group. */
9704 merge_got_entries (struct got_entry **pent)
9706 struct got_entry *ent, *ent2;
9708 for (ent = *pent; ent != NULL; ent = ent->next)
9709 if (!ent->is_indirect)
9710 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9711 if (!ent2->is_indirect
9712 && ent2->addend == ent->addend
9713 && ent2->tls_type == ent->tls_type
9714 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9716 ent2->is_indirect = TRUE;
9717 ent2->got.ent = ent;
9721 /* If H is undefined weak, make it dynamic if that makes sense. */
9724 ensure_undefweak_dynamic (struct bfd_link_info *info,
9725 struct elf_link_hash_entry *h)
9727 struct elf_link_hash_table *htab = elf_hash_table (info);
9729 if (htab->dynamic_sections_created
9730 && info->dynamic_undefined_weak != 0
9731 && h->root.type == bfd_link_hash_undefweak
9734 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9735 return bfd_elf_link_record_dynamic_symbol (info, h);
9739 /* Allocate space in .plt, .got and associated reloc sections for
9743 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9745 struct bfd_link_info *info;
9746 struct ppc_link_hash_table *htab;
9748 struct ppc_link_hash_entry *eh;
9749 struct got_entry **pgent, *gent;
9751 if (h->root.type == bfd_link_hash_indirect)
9754 info = (struct bfd_link_info *) inf;
9755 htab = ppc_hash_table (info);
9759 eh = (struct ppc_link_hash_entry *) h;
9760 /* Run through the TLS GD got entries first if we're changing them
9762 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9763 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9764 if (gent->got.refcount > 0
9765 && (gent->tls_type & TLS_GD) != 0)
9767 /* This was a GD entry that has been converted to TPREL. If
9768 there happens to be a TPREL entry we can use that one. */
9769 struct got_entry *ent;
9770 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9771 if (ent->got.refcount > 0
9772 && (ent->tls_type & TLS_TPREL) != 0
9773 && ent->addend == gent->addend
9774 && ent->owner == gent->owner)
9776 gent->got.refcount = 0;
9780 /* If not, then we'll be using our own TPREL entry. */
9781 if (gent->got.refcount != 0)
9782 gent->tls_type = TLS_TLS | TLS_TPREL;
9785 /* Remove any list entry that won't generate a word in the GOT before
9786 we call merge_got_entries. Otherwise we risk merging to empty
9788 pgent = &h->got.glist;
9789 while ((gent = *pgent) != NULL)
9790 if (gent->got.refcount > 0)
9792 if ((gent->tls_type & TLS_LD) != 0
9795 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9796 *pgent = gent->next;
9799 pgent = &gent->next;
9802 *pgent = gent->next;
9804 if (!htab->do_multi_toc)
9805 merge_got_entries (&h->got.glist);
9807 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9808 if (!gent->is_indirect)
9810 /* Make sure this symbol is output as a dynamic symbol.
9811 Undefined weak syms won't yet be marked as dynamic. */
9812 if (!ensure_undefweak_dynamic (info, h))
9815 if (!is_ppc64_elf (gent->owner))
9818 allocate_got (h, info, gent);
9821 /* If no dynamic sections we can't have dynamic relocs, except for
9822 IFUNCs which are handled even in static executables. */
9823 if (!htab->elf.dynamic_sections_created
9824 && h->type != STT_GNU_IFUNC)
9825 eh->dyn_relocs = NULL;
9827 /* Also discard relocs on undefined weak syms with non-default
9828 visibility, or when dynamic_undefined_weak says so. */
9829 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9830 eh->dyn_relocs = NULL;
9832 if (eh->dyn_relocs != NULL)
9834 struct elf_dyn_relocs *p, **pp;
9836 /* In the shared -Bsymbolic case, discard space allocated for
9837 dynamic pc-relative relocs against symbols which turn out to
9838 be defined in regular objects. For the normal shared case,
9839 discard space for relocs that have become local due to symbol
9840 visibility changes. */
9842 if (bfd_link_pic (info))
9844 /* Relocs that use pc_count are those that appear on a call
9845 insn, or certain REL relocs (see must_be_dyn_reloc) that
9846 can be generated via assembly. We want calls to
9847 protected symbols to resolve directly to the function
9848 rather than going via the plt. If people want function
9849 pointer comparisons to work as expected then they should
9850 avoid writing weird assembly. */
9851 if (SYMBOL_CALLS_LOCAL (info, h))
9853 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9855 p->count -= p->pc_count;
9864 if (eh->dyn_relocs != NULL)
9866 /* Make sure this symbol is output as a dynamic symbol.
9867 Undefined weak syms won't yet be marked as dynamic. */
9868 if (!ensure_undefweak_dynamic (info, h))
9872 else if (h->type == STT_GNU_IFUNC)
9874 /* A plt entry is always created when making direct calls to
9875 an ifunc, even when building a static executable, but
9876 that doesn't cover all cases. We may have only an ifunc
9877 initialised function pointer for a given ifunc symbol.
9879 For ELFv2, dynamic relocations are not required when
9880 generating a global entry PLT stub. */
9881 if (abiversion (info->output_bfd) >= 2)
9883 if (global_entry_stub (h))
9884 eh->dyn_relocs = NULL;
9887 /* For ELFv1 we have function descriptors. Descriptors need
9888 to be treated like PLT entries and thus have dynamic
9889 relocations. One exception is when the function
9890 descriptor is copied into .dynbss (which should only
9891 happen with ancient versions of gcc). */
9892 else if (h->needs_copy)
9893 eh->dyn_relocs = NULL;
9895 else if (ELIMINATE_COPY_RELOCS)
9897 /* For the non-pic case, discard space for relocs against
9898 symbols which turn out to need copy relocs or are not
9903 /* Make sure this symbol is output as a dynamic symbol.
9904 Undefined weak syms won't yet be marked as dynamic. */
9905 if (!ensure_undefweak_dynamic (info, h))
9908 if (h->dynindx == -1)
9909 eh->dyn_relocs = NULL;
9912 eh->dyn_relocs = NULL;
9915 /* Finally, allocate space. */
9916 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9918 asection *sreloc = elf_section_data (p->sec)->sreloc;
9919 if (eh->elf.type == STT_GNU_IFUNC)
9920 sreloc = htab->elf.irelplt;
9921 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9925 if ((htab->elf.dynamic_sections_created
9926 && h->dynindx != -1)
9927 || h->type == STT_GNU_IFUNC)
9929 struct plt_entry *pent;
9930 bfd_boolean doneone = FALSE;
9931 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9932 if (pent->plt.refcount > 0)
9934 if (!htab->elf.dynamic_sections_created
9935 || h->dynindx == -1)
9938 pent->plt.offset = s->size;
9939 s->size += PLT_ENTRY_SIZE (htab);
9940 s = htab->elf.irelplt;
9944 /* If this is the first .plt entry, make room for the special
9948 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9950 pent->plt.offset = s->size;
9952 /* Make room for this entry. */
9953 s->size += PLT_ENTRY_SIZE (htab);
9955 /* Make room for the .glink code. */
9958 s->size += GLINK_CALL_STUB_SIZE;
9961 /* We need bigger stubs past index 32767. */
9962 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9969 /* We also need to make an entry in the .rela.plt section. */
9970 s = htab->elf.srelplt;
9972 s->size += sizeof (Elf64_External_Rela);
9976 pent->plt.offset = (bfd_vma) -1;
9979 h->plt.plist = NULL;
9985 h->plt.plist = NULL;
9992 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9993 to set up space for global entry stubs. These are put in glink,
9994 after the branch table. */
9997 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9999 struct bfd_link_info *info;
10000 struct ppc_link_hash_table *htab;
10001 struct plt_entry *pent;
10004 if (h->root.type == bfd_link_hash_indirect)
10007 if (!h->pointer_equality_needed)
10010 if (h->def_regular)
10014 htab = ppc_hash_table (info);
10019 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10020 if (pent->plt.offset != (bfd_vma) -1
10021 && pent->addend == 0)
10023 /* For ELFv2, if this symbol is not defined in a regular file
10024 and we are not generating a shared library or pie, then we
10025 need to define the symbol in the executable on a call stub.
10026 This is to avoid text relocations. */
10027 s->size = (s->size + 15) & -16;
10028 h->root.type = bfd_link_hash_defined;
10029 h->root.u.def.section = s;
10030 h->root.u.def.value = s->size;
10037 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10038 read-only sections. */
10041 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
10043 if (h->root.type == bfd_link_hash_indirect)
10046 if (readonly_dynrelocs (h))
10048 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
10050 /* Not an error, just cut short the traversal. */
10056 /* Set the sizes of the dynamic sections. */
10059 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
10060 struct bfd_link_info *info)
10062 struct ppc_link_hash_table *htab;
10065 bfd_boolean relocs;
10067 struct got_entry *first_tlsld;
10069 htab = ppc_hash_table (info);
10073 dynobj = htab->elf.dynobj;
10074 if (dynobj == NULL)
10077 if (htab->elf.dynamic_sections_created)
10079 /* Set the contents of the .interp section to the interpreter. */
10080 if (bfd_link_executable (info) && !info->nointerp)
10082 s = bfd_get_linker_section (dynobj, ".interp");
10085 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10086 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10090 /* Set up .got offsets for local syms, and space for local dynamic
10092 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10094 struct got_entry **lgot_ents;
10095 struct got_entry **end_lgot_ents;
10096 struct plt_entry **local_plt;
10097 struct plt_entry **end_local_plt;
10098 unsigned char *lgot_masks;
10099 bfd_size_type locsymcount;
10100 Elf_Internal_Shdr *symtab_hdr;
10102 if (!is_ppc64_elf (ibfd))
10105 for (s = ibfd->sections; s != NULL; s = s->next)
10107 struct ppc_dyn_relocs *p;
10109 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10111 if (!bfd_is_abs_section (p->sec)
10112 && bfd_is_abs_section (p->sec->output_section))
10114 /* Input section has been discarded, either because
10115 it is a copy of a linkonce section or due to
10116 linker script /DISCARD/, so we'll be discarding
10119 else if (p->count != 0)
10121 asection *srel = elf_section_data (p->sec)->sreloc;
10123 srel = htab->elf.irelplt;
10124 srel->size += p->count * sizeof (Elf64_External_Rela);
10125 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10126 info->flags |= DF_TEXTREL;
10131 lgot_ents = elf_local_got_ents (ibfd);
10135 symtab_hdr = &elf_symtab_hdr (ibfd);
10136 locsymcount = symtab_hdr->sh_info;
10137 end_lgot_ents = lgot_ents + locsymcount;
10138 local_plt = (struct plt_entry **) end_lgot_ents;
10139 end_local_plt = local_plt + locsymcount;
10140 lgot_masks = (unsigned char *) end_local_plt;
10141 s = ppc64_elf_tdata (ibfd)->got;
10142 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10144 struct got_entry **pent, *ent;
10147 while ((ent = *pent) != NULL)
10148 if (ent->got.refcount > 0)
10150 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10152 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10157 unsigned int ent_size = 8;
10158 unsigned int rel_size = sizeof (Elf64_External_Rela);
10160 ent->got.offset = s->size;
10161 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10166 s->size += ent_size;
10167 if ((*lgot_masks & PLT_IFUNC) != 0)
10169 htab->elf.irelplt->size += rel_size;
10170 htab->got_reli_size += rel_size;
10172 else if (bfd_link_pic (info))
10174 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10175 srel->size += rel_size;
10184 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10185 for (; local_plt < end_local_plt; ++local_plt)
10187 struct plt_entry *ent;
10189 for (ent = *local_plt; ent != NULL; ent = ent->next)
10190 if (ent->plt.refcount > 0)
10192 s = htab->elf.iplt;
10193 ent->plt.offset = s->size;
10194 s->size += PLT_ENTRY_SIZE (htab);
10196 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10199 ent->plt.offset = (bfd_vma) -1;
10203 /* Allocate global sym .plt and .got entries, and space for global
10204 sym dynamic relocs. */
10205 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10206 /* Stash the end of glink branch table. */
10207 if (htab->glink != NULL)
10208 htab->glink->rawsize = htab->glink->size;
10210 if (!htab->opd_abi && !bfd_link_pic (info))
10211 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10213 first_tlsld = NULL;
10214 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10216 struct got_entry *ent;
10218 if (!is_ppc64_elf (ibfd))
10221 ent = ppc64_tlsld_got (ibfd);
10222 if (ent->got.refcount > 0)
10224 if (!htab->do_multi_toc && first_tlsld != NULL)
10226 ent->is_indirect = TRUE;
10227 ent->got.ent = first_tlsld;
10231 if (first_tlsld == NULL)
10233 s = ppc64_elf_tdata (ibfd)->got;
10234 ent->got.offset = s->size;
10237 if (bfd_link_pic (info))
10239 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10240 srel->size += sizeof (Elf64_External_Rela);
10245 ent->got.offset = (bfd_vma) -1;
10248 /* We now have determined the sizes of the various dynamic sections.
10249 Allocate memory for them. */
10251 for (s = dynobj->sections; s != NULL; s = s->next)
10253 if ((s->flags & SEC_LINKER_CREATED) == 0)
10256 if (s == htab->brlt || s == htab->relbrlt)
10257 /* These haven't been allocated yet; don't strip. */
10259 else if (s == htab->elf.sgot
10260 || s == htab->elf.splt
10261 || s == htab->elf.iplt
10262 || s == htab->glink
10263 || s == htab->elf.sdynbss
10264 || s == htab->elf.sdynrelro)
10266 /* Strip this section if we don't need it; see the
10269 else if (s == htab->glink_eh_frame)
10271 if (!bfd_is_abs_section (s->output_section))
10272 /* Not sized yet. */
10275 else if (CONST_STRNEQ (s->name, ".rela"))
10279 if (s != htab->elf.srelplt)
10282 /* We use the reloc_count field as a counter if we need
10283 to copy relocs into the output file. */
10284 s->reloc_count = 0;
10289 /* It's not one of our sections, so don't allocate space. */
10295 /* If we don't need this section, strip it from the
10296 output file. This is mostly to handle .rela.bss and
10297 .rela.plt. We must create both sections in
10298 create_dynamic_sections, because they must be created
10299 before the linker maps input sections to output
10300 sections. The linker does that before
10301 adjust_dynamic_symbol is called, and it is that
10302 function which decides whether anything needs to go
10303 into these sections. */
10304 s->flags |= SEC_EXCLUDE;
10308 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10311 /* Allocate memory for the section contents. We use bfd_zalloc
10312 here in case unused entries are not reclaimed before the
10313 section's contents are written out. This should not happen,
10314 but this way if it does we get a R_PPC64_NONE reloc in .rela
10315 sections instead of garbage.
10316 We also rely on the section contents being zero when writing
10317 the GOT and .dynrelro. */
10318 s->contents = bfd_zalloc (dynobj, s->size);
10319 if (s->contents == NULL)
10323 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10325 if (!is_ppc64_elf (ibfd))
10328 s = ppc64_elf_tdata (ibfd)->got;
10329 if (s != NULL && s != htab->elf.sgot)
10332 s->flags |= SEC_EXCLUDE;
10335 s->contents = bfd_zalloc (ibfd, s->size);
10336 if (s->contents == NULL)
10340 s = ppc64_elf_tdata (ibfd)->relgot;
10344 s->flags |= SEC_EXCLUDE;
10347 s->contents = bfd_zalloc (ibfd, s->size);
10348 if (s->contents == NULL)
10351 s->reloc_count = 0;
10356 if (htab->elf.dynamic_sections_created)
10358 bfd_boolean tls_opt;
10360 /* Add some entries to the .dynamic section. We fill in the
10361 values later, in ppc64_elf_finish_dynamic_sections, but we
10362 must add the entries now so that we get the correct size for
10363 the .dynamic section. The DT_DEBUG entry is filled in by the
10364 dynamic linker and used by the debugger. */
10365 #define add_dynamic_entry(TAG, VAL) \
10366 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10368 if (bfd_link_executable (info))
10370 if (!add_dynamic_entry (DT_DEBUG, 0))
10374 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10376 if (!add_dynamic_entry (DT_PLTGOT, 0)
10377 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10378 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10379 || !add_dynamic_entry (DT_JMPREL, 0)
10380 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10384 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10386 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10387 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10391 tls_opt = (htab->params->tls_get_addr_opt
10392 && htab->tls_get_addr_fd != NULL
10393 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10394 if (tls_opt || !htab->opd_abi)
10396 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10402 if (!add_dynamic_entry (DT_RELA, 0)
10403 || !add_dynamic_entry (DT_RELASZ, 0)
10404 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10407 /* If any dynamic relocs apply to a read-only section,
10408 then we need a DT_TEXTREL entry. */
10409 if ((info->flags & DF_TEXTREL) == 0)
10410 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10412 if ((info->flags & DF_TEXTREL) != 0)
10414 if (!add_dynamic_entry (DT_TEXTREL, 0))
10419 #undef add_dynamic_entry
10424 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10427 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10429 if (h->plt.plist != NULL
10431 && !h->pointer_equality_needed)
10434 return _bfd_elf_hash_symbol (h);
10437 /* Determine the type of stub needed, if any, for a call. */
10439 static inline enum ppc_stub_type
10440 ppc_type_of_stub (asection *input_sec,
10441 const Elf_Internal_Rela *rel,
10442 struct ppc_link_hash_entry **hash,
10443 struct plt_entry **plt_ent,
10444 bfd_vma destination,
10445 unsigned long local_off)
10447 struct ppc_link_hash_entry *h = *hash;
10449 bfd_vma branch_offset;
10450 bfd_vma max_branch_offset;
10451 enum elf_ppc64_reloc_type r_type;
10455 struct plt_entry *ent;
10456 struct ppc_link_hash_entry *fdh = h;
10458 && h->oh->is_func_descriptor)
10460 fdh = ppc_follow_link (h->oh);
10464 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10465 if (ent->addend == rel->r_addend
10466 && ent->plt.offset != (bfd_vma) -1)
10469 return ppc_stub_plt_call;
10472 /* Here, we know we don't have a plt entry. If we don't have a
10473 either a defined function descriptor or a defined entry symbol
10474 in a regular object file, then it is pointless trying to make
10475 any other type of stub. */
10476 if (!is_static_defined (&fdh->elf)
10477 && !is_static_defined (&h->elf))
10478 return ppc_stub_none;
10480 else if (elf_local_got_ents (input_sec->owner) != NULL)
10482 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10483 struct plt_entry **local_plt = (struct plt_entry **)
10484 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10485 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10487 if (local_plt[r_symndx] != NULL)
10489 struct plt_entry *ent;
10491 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10492 if (ent->addend == rel->r_addend
10493 && ent->plt.offset != (bfd_vma) -1)
10496 return ppc_stub_plt_call;
10501 /* Determine where the call point is. */
10502 location = (input_sec->output_offset
10503 + input_sec->output_section->vma
10506 branch_offset = destination - location;
10507 r_type = ELF64_R_TYPE (rel->r_info);
10509 /* Determine if a long branch stub is needed. */
10510 max_branch_offset = 1 << 25;
10511 if (r_type != R_PPC64_REL24)
10512 max_branch_offset = 1 << 15;
10514 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10515 /* We need a stub. Figure out whether a long_branch or plt_branch
10516 is needed later. */
10517 return ppc_stub_long_branch;
10519 return ppc_stub_none;
10522 /* With power7 weakly ordered memory model, it is possible for ld.so
10523 to update a plt entry in one thread and have another thread see a
10524 stale zero toc entry. To avoid this we need some sort of acquire
10525 barrier in the call stub. One solution is to make the load of the
10526 toc word seem to appear to depend on the load of the function entry
10527 word. Another solution is to test for r2 being zero, and branch to
10528 the appropriate glink entry if so.
10530 . fake dep barrier compare
10531 . ld 12,xxx(2) ld 12,xxx(2)
10532 . mtctr 12 mtctr 12
10533 . xor 11,12,12 ld 2,xxx+8(2)
10534 . add 2,2,11 cmpldi 2,0
10535 . ld 2,xxx+8(2) bnectr+
10536 . bctr b <glink_entry>
10538 The solution involving the compare turns out to be faster, so
10539 that's what we use unless the branch won't reach. */
10541 #define ALWAYS_USE_FAKE_DEP 0
10542 #define ALWAYS_EMIT_R2SAVE 0
10544 #define PPC_LO(v) ((v) & 0xffff)
10545 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10546 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10548 static inline unsigned int
10549 plt_stub_size (struct ppc_link_hash_table *htab,
10550 struct ppc_stub_hash_entry *stub_entry,
10553 unsigned size = 12;
10555 if (ALWAYS_EMIT_R2SAVE
10556 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10558 if (PPC_HA (off) != 0)
10563 if (htab->params->plt_static_chain)
10565 if (htab->params->plt_thread_safe
10566 && htab->elf.dynamic_sections_created
10567 && stub_entry->h != NULL
10568 && stub_entry->h->elf.dynindx != -1)
10570 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10573 if (stub_entry->h != NULL
10574 && (stub_entry->h == htab->tls_get_addr_fd
10575 || stub_entry->h == htab->tls_get_addr)
10576 && htab->params->tls_get_addr_opt)
10579 if (ALWAYS_EMIT_R2SAVE
10580 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10586 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10587 then return the padding needed to do so. */
10588 static inline unsigned int
10589 plt_stub_pad (struct ppc_link_hash_table *htab,
10590 struct ppc_stub_hash_entry *stub_entry,
10593 int stub_align = 1 << htab->params->plt_stub_align;
10594 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10595 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10597 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10598 > ((stub_size - 1) & -stub_align))
10599 return stub_align - (stub_off & (stub_align - 1));
10603 /* Build a .plt call stub. */
10605 static inline bfd_byte *
10606 build_plt_stub (struct ppc_link_hash_table *htab,
10607 struct ppc_stub_hash_entry *stub_entry,
10608 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10610 bfd *obfd = htab->params->stub_bfd;
10611 bfd_boolean plt_load_toc = htab->opd_abi;
10612 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10613 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10614 && htab->elf.dynamic_sections_created
10615 && stub_entry->h != NULL
10616 && stub_entry->h->elf.dynindx != -1);
10617 bfd_boolean use_fake_dep = plt_thread_safe;
10618 bfd_vma cmp_branch_off = 0;
10620 if (!ALWAYS_USE_FAKE_DEP
10623 && !((stub_entry->h == htab->tls_get_addr_fd
10624 || stub_entry->h == htab->tls_get_addr)
10625 && htab->params->tls_get_addr_opt))
10627 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10628 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10629 / PLT_ENTRY_SIZE (htab));
10630 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10633 if (pltindex > 32768)
10634 glinkoff += (pltindex - 32768) * 4;
10636 + htab->glink->output_offset
10637 + htab->glink->output_section->vma);
10638 from = (p - stub_entry->group->stub_sec->contents
10639 + 4 * (ALWAYS_EMIT_R2SAVE
10640 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10641 + 4 * (PPC_HA (offset) != 0)
10642 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10643 != PPC_HA (offset))
10644 + 4 * (plt_static_chain != 0)
10646 + stub_entry->group->stub_sec->output_offset
10647 + stub_entry->group->stub_sec->output_section->vma);
10648 cmp_branch_off = to - from;
10649 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10652 if (PPC_HA (offset) != 0)
10656 if (ALWAYS_EMIT_R2SAVE
10657 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10658 r[0].r_offset += 4;
10659 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10660 r[1].r_offset = r[0].r_offset + 4;
10661 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10662 r[1].r_addend = r[0].r_addend;
10665 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10667 r[2].r_offset = r[1].r_offset + 4;
10668 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10669 r[2].r_addend = r[0].r_addend;
10673 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10674 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10675 r[2].r_addend = r[0].r_addend + 8;
10676 if (plt_static_chain)
10678 r[3].r_offset = r[2].r_offset + 4;
10679 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10680 r[3].r_addend = r[0].r_addend + 16;
10685 if (ALWAYS_EMIT_R2SAVE
10686 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10687 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10690 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10691 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10695 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10696 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10699 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10701 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10704 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10709 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10710 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10712 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10713 if (plt_static_chain)
10714 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10721 if (ALWAYS_EMIT_R2SAVE
10722 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10723 r[0].r_offset += 4;
10724 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10727 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10729 r[1].r_offset = r[0].r_offset + 4;
10730 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10731 r[1].r_addend = r[0].r_addend;
10735 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10736 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10737 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10738 if (plt_static_chain)
10740 r[2].r_offset = r[1].r_offset + 4;
10741 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10742 r[2].r_addend = r[0].r_addend + 8;
10747 if (ALWAYS_EMIT_R2SAVE
10748 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10749 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10750 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10752 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10754 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10757 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10762 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10763 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10765 if (plt_static_chain)
10766 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10767 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10770 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10772 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10773 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10774 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10777 bfd_put_32 (obfd, BCTR, p), p += 4;
10781 /* Build a special .plt call stub for __tls_get_addr. */
10783 #define LD_R11_0R3 0xe9630000
10784 #define LD_R12_0R3 0xe9830000
10785 #define MR_R0_R3 0x7c601b78
10786 #define CMPDI_R11_0 0x2c2b0000
10787 #define ADD_R3_R12_R13 0x7c6c6a14
10788 #define BEQLR 0x4d820020
10789 #define MR_R3_R0 0x7c030378
10790 #define STD_R11_0R1 0xf9610000
10791 #define BCTRL 0x4e800421
10792 #define LD_R11_0R1 0xe9610000
10793 #define MTLR_R11 0x7d6803a6
10795 static inline bfd_byte *
10796 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10797 struct ppc_stub_hash_entry *stub_entry,
10798 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10800 bfd *obfd = htab->params->stub_bfd;
10802 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10803 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10804 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10805 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10806 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10807 bfd_put_32 (obfd, BEQLR, p), p += 4;
10808 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10810 r[0].r_offset += 7 * 4;
10811 if (!ALWAYS_EMIT_R2SAVE
10812 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10813 return build_plt_stub (htab, stub_entry, p, offset, r);
10815 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10816 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10819 r[0].r_offset += 2 * 4;
10820 p = build_plt_stub (htab, stub_entry, p, offset, r);
10821 bfd_put_32 (obfd, BCTRL, p - 4);
10823 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10824 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10825 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10826 bfd_put_32 (obfd, BLR, p), p += 4;
10831 static Elf_Internal_Rela *
10832 get_relocs (asection *sec, int count)
10834 Elf_Internal_Rela *relocs;
10835 struct bfd_elf_section_data *elfsec_data;
10837 elfsec_data = elf_section_data (sec);
10838 relocs = elfsec_data->relocs;
10839 if (relocs == NULL)
10841 bfd_size_type relsize;
10842 relsize = sec->reloc_count * sizeof (*relocs);
10843 relocs = bfd_alloc (sec->owner, relsize);
10844 if (relocs == NULL)
10846 elfsec_data->relocs = relocs;
10847 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10848 sizeof (Elf_Internal_Shdr));
10849 if (elfsec_data->rela.hdr == NULL)
10851 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10852 * sizeof (Elf64_External_Rela));
10853 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10854 sec->reloc_count = 0;
10856 relocs += sec->reloc_count;
10857 sec->reloc_count += count;
10862 get_r2off (struct bfd_link_info *info,
10863 struct ppc_stub_hash_entry *stub_entry)
10865 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10866 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10870 /* Support linking -R objects. Get the toc pointer from the
10873 if (!htab->opd_abi)
10875 asection *opd = stub_entry->h->elf.root.u.def.section;
10876 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10878 if (strcmp (opd->name, ".opd") != 0
10879 || opd->reloc_count != 0)
10881 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10882 stub_entry->h->elf.root.root.string);
10883 bfd_set_error (bfd_error_bad_value);
10884 return (bfd_vma) -1;
10886 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10887 return (bfd_vma) -1;
10888 r2off = bfd_get_64 (opd->owner, buf);
10889 r2off -= elf_gp (info->output_bfd);
10891 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10896 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10898 struct ppc_stub_hash_entry *stub_entry;
10899 struct ppc_branch_hash_entry *br_entry;
10900 struct bfd_link_info *info;
10901 struct ppc_link_hash_table *htab;
10906 Elf_Internal_Rela *r;
10909 /* Massage our args to the form they really have. */
10910 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10913 htab = ppc_hash_table (info);
10917 /* Make a note of the offset within the stubs for this entry. */
10918 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10919 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10921 htab->stub_count[stub_entry->stub_type - 1] += 1;
10922 switch (stub_entry->stub_type)
10924 case ppc_stub_long_branch:
10925 case ppc_stub_long_branch_r2off:
10926 /* Branches are relative. This is where we are going to. */
10927 dest = (stub_entry->target_value
10928 + stub_entry->target_section->output_offset
10929 + stub_entry->target_section->output_section->vma);
10930 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10933 /* And this is where we are coming from. */
10934 off -= (stub_entry->stub_offset
10935 + stub_entry->group->stub_sec->output_offset
10936 + stub_entry->group->stub_sec->output_section->vma);
10939 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10941 bfd_vma r2off = get_r2off (info, stub_entry);
10943 if (r2off == (bfd_vma) -1)
10945 htab->stub_error = TRUE;
10948 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10951 if (PPC_HA (r2off) != 0)
10953 bfd_put_32 (htab->params->stub_bfd,
10954 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10958 if (PPC_LO (r2off) != 0)
10960 bfd_put_32 (htab->params->stub_bfd,
10961 ADDI_R2_R2 | PPC_LO (r2off), loc);
10967 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10969 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10971 info->callbacks->einfo
10972 (_("%P: long branch stub `%s' offset overflow\n"),
10973 stub_entry->root.string);
10974 htab->stub_error = TRUE;
10978 if (info->emitrelocations)
10980 r = get_relocs (stub_entry->group->stub_sec, 1);
10983 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10984 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10985 r->r_addend = dest;
10986 if (stub_entry->h != NULL)
10988 struct elf_link_hash_entry **hashes;
10989 unsigned long symndx;
10990 struct ppc_link_hash_entry *h;
10992 hashes = elf_sym_hashes (htab->params->stub_bfd);
10993 if (hashes == NULL)
10995 bfd_size_type hsize;
10997 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10998 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10999 if (hashes == NULL)
11001 elf_sym_hashes (htab->params->stub_bfd) = hashes;
11002 htab->stub_globals = 1;
11004 symndx = htab->stub_globals++;
11006 hashes[symndx] = &h->elf;
11007 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
11008 if (h->oh != NULL && h->oh->is_func)
11009 h = ppc_follow_link (h->oh);
11010 if (h->elf.root.u.def.section != stub_entry->target_section)
11011 /* H is an opd symbol. The addend must be zero. */
11015 off = (h->elf.root.u.def.value
11016 + h->elf.root.u.def.section->output_offset
11017 + h->elf.root.u.def.section->output_section->vma);
11018 r->r_addend -= off;
11024 case ppc_stub_plt_branch:
11025 case ppc_stub_plt_branch_r2off:
11026 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11027 stub_entry->root.string + 9,
11029 if (br_entry == NULL)
11031 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
11032 stub_entry->root.string);
11033 htab->stub_error = TRUE;
11037 dest = (stub_entry->target_value
11038 + stub_entry->target_section->output_offset
11039 + stub_entry->target_section->output_section->vma);
11040 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11041 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11043 bfd_put_64 (htab->brlt->owner, dest,
11044 htab->brlt->contents + br_entry->offset);
11046 if (br_entry->iter == htab->stub_iteration)
11048 br_entry->iter = 0;
11050 if (htab->relbrlt != NULL)
11052 /* Create a reloc for the branch lookup table entry. */
11053 Elf_Internal_Rela rela;
11056 rela.r_offset = (br_entry->offset
11057 + htab->brlt->output_offset
11058 + htab->brlt->output_section->vma);
11059 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11060 rela.r_addend = dest;
11062 rl = htab->relbrlt->contents;
11063 rl += (htab->relbrlt->reloc_count++
11064 * sizeof (Elf64_External_Rela));
11065 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
11067 else if (info->emitrelocations)
11069 r = get_relocs (htab->brlt, 1);
11072 /* brlt, being SEC_LINKER_CREATED does not go through the
11073 normal reloc processing. Symbols and offsets are not
11074 translated from input file to output file form, so
11075 set up the offset per the output file. */
11076 r->r_offset = (br_entry->offset
11077 + htab->brlt->output_offset
11078 + htab->brlt->output_section->vma);
11079 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11080 r->r_addend = dest;
11084 dest = (br_entry->offset
11085 + htab->brlt->output_offset
11086 + htab->brlt->output_section->vma);
11089 - elf_gp (htab->brlt->output_section->owner)
11090 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11092 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11094 info->callbacks->einfo
11095 (_("%P: linkage table error against `%T'\n"),
11096 stub_entry->root.string);
11097 bfd_set_error (bfd_error_bad_value);
11098 htab->stub_error = TRUE;
11102 if (info->emitrelocations)
11104 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11107 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11108 if (bfd_big_endian (info->output_bfd))
11109 r[0].r_offset += 2;
11110 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11111 r[0].r_offset += 4;
11112 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11113 r[0].r_addend = dest;
11114 if (PPC_HA (off) != 0)
11116 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11117 r[1].r_offset = r[0].r_offset + 4;
11118 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11119 r[1].r_addend = r[0].r_addend;
11123 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11125 if (PPC_HA (off) != 0)
11128 bfd_put_32 (htab->params->stub_bfd,
11129 ADDIS_R12_R2 | PPC_HA (off), loc);
11131 bfd_put_32 (htab->params->stub_bfd,
11132 LD_R12_0R12 | PPC_LO (off), loc);
11137 bfd_put_32 (htab->params->stub_bfd,
11138 LD_R12_0R2 | PPC_LO (off), loc);
11143 bfd_vma r2off = get_r2off (info, stub_entry);
11145 if (r2off == (bfd_vma) -1)
11147 htab->stub_error = TRUE;
11151 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11154 if (PPC_HA (off) != 0)
11157 bfd_put_32 (htab->params->stub_bfd,
11158 ADDIS_R12_R2 | PPC_HA (off), loc);
11160 bfd_put_32 (htab->params->stub_bfd,
11161 LD_R12_0R12 | PPC_LO (off), loc);
11164 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11166 if (PPC_HA (r2off) != 0)
11170 bfd_put_32 (htab->params->stub_bfd,
11171 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11173 if (PPC_LO (r2off) != 0)
11177 bfd_put_32 (htab->params->stub_bfd,
11178 ADDI_R2_R2 | PPC_LO (r2off), loc);
11182 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11184 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11187 case ppc_stub_plt_call:
11188 case ppc_stub_plt_call_r2save:
11189 if (stub_entry->h != NULL
11190 && stub_entry->h->is_func_descriptor
11191 && stub_entry->h->oh != NULL)
11193 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11195 /* If the old-ABI "dot-symbol" is undefined make it weak so
11196 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11197 if (fh->elf.root.type == bfd_link_hash_undefined
11198 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11199 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11200 fh->elf.root.type = bfd_link_hash_undefweak;
11203 /* Now build the stub. */
11204 dest = stub_entry->plt_ent->plt.offset & ~1;
11205 if (dest >= (bfd_vma) -2)
11208 plt = htab->elf.splt;
11209 if (!htab->elf.dynamic_sections_created
11210 || stub_entry->h == NULL
11211 || stub_entry->h->elf.dynindx == -1)
11212 plt = htab->elf.iplt;
11214 dest += plt->output_offset + plt->output_section->vma;
11216 if (stub_entry->h == NULL
11217 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11219 Elf_Internal_Rela rela;
11222 rela.r_offset = dest;
11224 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11226 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11227 rela.r_addend = (stub_entry->target_value
11228 + stub_entry->target_section->output_offset
11229 + stub_entry->target_section->output_section->vma);
11231 rl = (htab->elf.irelplt->contents
11232 + (htab->elf.irelplt->reloc_count++
11233 * sizeof (Elf64_External_Rela)));
11234 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11235 stub_entry->plt_ent->plt.offset |= 1;
11236 htab->local_ifunc_resolver = 1;
11240 - elf_gp (plt->output_section->owner)
11241 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11243 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11245 info->callbacks->einfo
11246 /* xgettext:c-format */
11247 (_("%P: linkage table error against `%T'\n"),
11248 stub_entry->h != NULL
11249 ? stub_entry->h->elf.root.root.string
11251 bfd_set_error (bfd_error_bad_value);
11252 htab->stub_error = TRUE;
11256 if (htab->params->plt_stub_align != 0)
11258 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11260 stub_entry->group->stub_sec->size += pad;
11261 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11266 if (info->emitrelocations)
11268 r = get_relocs (stub_entry->group->stub_sec,
11269 ((PPC_HA (off) != 0)
11271 ? 2 + (htab->params->plt_static_chain
11272 && PPC_HA (off + 16) == PPC_HA (off))
11276 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11277 if (bfd_big_endian (info->output_bfd))
11278 r[0].r_offset += 2;
11279 r[0].r_addend = dest;
11281 if (stub_entry->h != NULL
11282 && (stub_entry->h == htab->tls_get_addr_fd
11283 || stub_entry->h == htab->tls_get_addr)
11284 && htab->params->tls_get_addr_opt)
11285 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11287 p = build_plt_stub (htab, stub_entry, loc, off, r);
11291 case ppc_stub_save_res:
11299 stub_entry->group->stub_sec->size += size;
11301 if (htab->params->emit_stub_syms)
11303 struct elf_link_hash_entry *h;
11306 const char *const stub_str[] = { "long_branch",
11307 "long_branch_r2off",
11309 "plt_branch_r2off",
11313 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11314 len2 = strlen (stub_entry->root.string);
11315 name = bfd_malloc (len1 + len2 + 2);
11318 memcpy (name, stub_entry->root.string, 9);
11319 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11320 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11321 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11324 if (h->root.type == bfd_link_hash_new)
11326 h->root.type = bfd_link_hash_defined;
11327 h->root.u.def.section = stub_entry->group->stub_sec;
11328 h->root.u.def.value = stub_entry->stub_offset;
11329 h->ref_regular = 1;
11330 h->def_regular = 1;
11331 h->ref_regular_nonweak = 1;
11332 h->forced_local = 1;
11334 h->root.linker_def = 1;
11341 /* As above, but don't actually build the stub. Just bump offset so
11342 we know stub section sizes, and select plt_branch stubs where
11343 long_branch stubs won't do. */
11346 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11348 struct ppc_stub_hash_entry *stub_entry;
11349 struct bfd_link_info *info;
11350 struct ppc_link_hash_table *htab;
11354 /* Massage our args to the form they really have. */
11355 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11358 htab = ppc_hash_table (info);
11362 if (stub_entry->h != NULL
11363 && stub_entry->h->save_res
11364 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11365 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11367 /* Don't make stubs to out-of-line register save/restore
11368 functions. Instead, emit copies of the functions. */
11369 stub_entry->group->needs_save_res = 1;
11370 stub_entry->stub_type = ppc_stub_save_res;
11374 if (stub_entry->stub_type == ppc_stub_plt_call
11375 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11378 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11379 if (off >= (bfd_vma) -2)
11381 plt = htab->elf.splt;
11382 if (!htab->elf.dynamic_sections_created
11383 || stub_entry->h == NULL
11384 || stub_entry->h->elf.dynindx == -1)
11385 plt = htab->elf.iplt;
11386 off += (plt->output_offset
11387 + plt->output_section->vma
11388 - elf_gp (plt->output_section->owner)
11389 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11391 size = plt_stub_size (htab, stub_entry, off);
11392 if (stub_entry->h != NULL
11393 && (stub_entry->h == htab->tls_get_addr_fd
11394 || stub_entry->h == htab->tls_get_addr)
11395 && htab->params->tls_get_addr_opt
11396 && (ALWAYS_EMIT_R2SAVE
11397 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11398 stub_entry->group->tls_get_addr_opt_bctrl
11399 = stub_entry->group->stub_sec->size + size - 5 * 4;
11401 if (htab->params->plt_stub_align)
11402 size += plt_stub_pad (htab, stub_entry, off);
11403 if (info->emitrelocations)
11405 stub_entry->group->stub_sec->reloc_count
11406 += ((PPC_HA (off) != 0)
11408 ? 2 + (htab->params->plt_static_chain
11409 && PPC_HA (off + 16) == PPC_HA (off))
11411 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11416 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11419 bfd_vma local_off = 0;
11421 off = (stub_entry->target_value
11422 + stub_entry->target_section->output_offset
11423 + stub_entry->target_section->output_section->vma);
11424 off -= (stub_entry->group->stub_sec->size
11425 + stub_entry->group->stub_sec->output_offset
11426 + stub_entry->group->stub_sec->output_section->vma);
11428 /* Reset the stub type from the plt variant in case we now
11429 can reach with a shorter stub. */
11430 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11431 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11434 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11436 r2off = get_r2off (info, stub_entry);
11437 if (r2off == (bfd_vma) -1)
11439 htab->stub_error = TRUE;
11443 if (PPC_HA (r2off) != 0)
11445 if (PPC_LO (r2off) != 0)
11450 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11452 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11453 Do the same for -R objects without function descriptors. */
11454 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11455 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11457 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11459 struct ppc_branch_hash_entry *br_entry;
11461 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11462 stub_entry->root.string + 9,
11464 if (br_entry == NULL)
11466 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11467 stub_entry->root.string);
11468 htab->stub_error = TRUE;
11472 if (br_entry->iter != htab->stub_iteration)
11474 br_entry->iter = htab->stub_iteration;
11475 br_entry->offset = htab->brlt->size;
11476 htab->brlt->size += 8;
11478 if (htab->relbrlt != NULL)
11479 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11480 else if (info->emitrelocations)
11482 htab->brlt->reloc_count += 1;
11483 htab->brlt->flags |= SEC_RELOC;
11487 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11488 off = (br_entry->offset
11489 + htab->brlt->output_offset
11490 + htab->brlt->output_section->vma
11491 - elf_gp (htab->brlt->output_section->owner)
11492 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11494 if (info->emitrelocations)
11496 stub_entry->group->stub_sec->reloc_count
11497 += 1 + (PPC_HA (off) != 0);
11498 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11501 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11504 if (PPC_HA (off) != 0)
11510 if (PPC_HA (off) != 0)
11513 if (PPC_HA (r2off) != 0)
11515 if (PPC_LO (r2off) != 0)
11519 else if (info->emitrelocations)
11521 stub_entry->group->stub_sec->reloc_count += 1;
11522 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11526 stub_entry->group->stub_sec->size += size;
11530 /* Set up various things so that we can make a list of input sections
11531 for each output section included in the link. Returns -1 on error,
11532 0 when no stubs will be needed, and 1 on success. */
11535 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11539 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11544 htab->sec_info_arr_size = bfd_get_next_section_id ();
11545 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11546 htab->sec_info = bfd_zmalloc (amt);
11547 if (htab->sec_info == NULL)
11550 /* Set toc_off for com, und, abs and ind sections. */
11551 for (id = 0; id < 3; id++)
11552 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11557 /* Set up for first pass at multitoc partitioning. */
11560 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11562 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11564 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11565 htab->toc_bfd = NULL;
11566 htab->toc_first_sec = NULL;
11569 /* The linker repeatedly calls this function for each TOC input section
11570 and linker generated GOT section. Group input bfds such that the toc
11571 within a group is less than 64k in size. */
11574 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11576 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11577 bfd_vma addr, off, limit;
11582 if (!htab->second_toc_pass)
11584 /* Keep track of the first .toc or .got section for this input bfd. */
11585 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11589 htab->toc_bfd = isec->owner;
11590 htab->toc_first_sec = isec;
11593 addr = isec->output_offset + isec->output_section->vma;
11594 off = addr - htab->toc_curr;
11595 limit = 0x80008000;
11596 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11598 if (off + isec->size > limit)
11600 addr = (htab->toc_first_sec->output_offset
11601 + htab->toc_first_sec->output_section->vma);
11602 htab->toc_curr = addr;
11603 htab->toc_curr &= -TOC_BASE_ALIGN;
11606 /* toc_curr is the base address of this toc group. Set elf_gp
11607 for the input section to be the offset relative to the
11608 output toc base plus 0x8000. Making the input elf_gp an
11609 offset allows us to move the toc as a whole without
11610 recalculating input elf_gp. */
11611 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11612 off += TOC_BASE_OFF;
11614 /* Die if someone uses a linker script that doesn't keep input
11615 file .toc and .got together. */
11617 && elf_gp (isec->owner) != 0
11618 && elf_gp (isec->owner) != off)
11621 elf_gp (isec->owner) = off;
11625 /* During the second pass toc_first_sec points to the start of
11626 a toc group, and toc_curr is used to track the old elf_gp.
11627 We use toc_bfd to ensure we only look at each bfd once. */
11628 if (htab->toc_bfd == isec->owner)
11630 htab->toc_bfd = isec->owner;
11632 if (htab->toc_first_sec == NULL
11633 || htab->toc_curr != elf_gp (isec->owner))
11635 htab->toc_curr = elf_gp (isec->owner);
11636 htab->toc_first_sec = isec;
11638 addr = (htab->toc_first_sec->output_offset
11639 + htab->toc_first_sec->output_section->vma);
11640 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11641 elf_gp (isec->owner) = off;
11646 /* Called via elf_link_hash_traverse to merge GOT entries for global
11650 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11652 if (h->root.type == bfd_link_hash_indirect)
11655 merge_got_entries (&h->got.glist);
11660 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11664 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11666 struct got_entry *gent;
11668 if (h->root.type == bfd_link_hash_indirect)
11671 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11672 if (!gent->is_indirect)
11673 allocate_got (h, (struct bfd_link_info *) inf, gent);
11677 /* Called on the first multitoc pass after the last call to
11678 ppc64_elf_next_toc_section. This function removes duplicate GOT
11682 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11684 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11685 struct bfd *ibfd, *ibfd2;
11686 bfd_boolean done_something;
11688 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11690 if (!htab->do_multi_toc)
11693 /* Merge global sym got entries within a toc group. */
11694 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11696 /* And tlsld_got. */
11697 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11699 struct got_entry *ent, *ent2;
11701 if (!is_ppc64_elf (ibfd))
11704 ent = ppc64_tlsld_got (ibfd);
11705 if (!ent->is_indirect
11706 && ent->got.offset != (bfd_vma) -1)
11708 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11710 if (!is_ppc64_elf (ibfd2))
11713 ent2 = ppc64_tlsld_got (ibfd2);
11714 if (!ent2->is_indirect
11715 && ent2->got.offset != (bfd_vma) -1
11716 && elf_gp (ibfd2) == elf_gp (ibfd))
11718 ent2->is_indirect = TRUE;
11719 ent2->got.ent = ent;
11725 /* Zap sizes of got sections. */
11726 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11727 htab->elf.irelplt->size -= htab->got_reli_size;
11728 htab->got_reli_size = 0;
11730 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11732 asection *got, *relgot;
11734 if (!is_ppc64_elf (ibfd))
11737 got = ppc64_elf_tdata (ibfd)->got;
11740 got->rawsize = got->size;
11742 relgot = ppc64_elf_tdata (ibfd)->relgot;
11743 relgot->rawsize = relgot->size;
11748 /* Now reallocate the got, local syms first. We don't need to
11749 allocate section contents again since we never increase size. */
11750 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11752 struct got_entry **lgot_ents;
11753 struct got_entry **end_lgot_ents;
11754 struct plt_entry **local_plt;
11755 struct plt_entry **end_local_plt;
11756 unsigned char *lgot_masks;
11757 bfd_size_type locsymcount;
11758 Elf_Internal_Shdr *symtab_hdr;
11761 if (!is_ppc64_elf (ibfd))
11764 lgot_ents = elf_local_got_ents (ibfd);
11768 symtab_hdr = &elf_symtab_hdr (ibfd);
11769 locsymcount = symtab_hdr->sh_info;
11770 end_lgot_ents = lgot_ents + locsymcount;
11771 local_plt = (struct plt_entry **) end_lgot_ents;
11772 end_local_plt = local_plt + locsymcount;
11773 lgot_masks = (unsigned char *) end_local_plt;
11774 s = ppc64_elf_tdata (ibfd)->got;
11775 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11777 struct got_entry *ent;
11779 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11781 unsigned int ent_size = 8;
11782 unsigned int rel_size = sizeof (Elf64_External_Rela);
11784 ent->got.offset = s->size;
11785 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11790 s->size += ent_size;
11791 if ((*lgot_masks & PLT_IFUNC) != 0)
11793 htab->elf.irelplt->size += rel_size;
11794 htab->got_reli_size += rel_size;
11796 else if (bfd_link_pic (info))
11798 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11799 srel->size += rel_size;
11805 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11807 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11809 struct got_entry *ent;
11811 if (!is_ppc64_elf (ibfd))
11814 ent = ppc64_tlsld_got (ibfd);
11815 if (!ent->is_indirect
11816 && ent->got.offset != (bfd_vma) -1)
11818 asection *s = ppc64_elf_tdata (ibfd)->got;
11819 ent->got.offset = s->size;
11821 if (bfd_link_pic (info))
11823 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11824 srel->size += sizeof (Elf64_External_Rela);
11829 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11830 if (!done_something)
11831 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11835 if (!is_ppc64_elf (ibfd))
11838 got = ppc64_elf_tdata (ibfd)->got;
11841 done_something = got->rawsize != got->size;
11842 if (done_something)
11847 if (done_something)
11848 (*htab->params->layout_sections_again) ();
11850 /* Set up for second pass over toc sections to recalculate elf_gp
11851 on input sections. */
11852 htab->toc_bfd = NULL;
11853 htab->toc_first_sec = NULL;
11854 htab->second_toc_pass = TRUE;
11855 return done_something;
11858 /* Called after second pass of multitoc partitioning. */
11861 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11863 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11865 /* After the second pass, toc_curr tracks the TOC offset used
11866 for code sections below in ppc64_elf_next_input_section. */
11867 htab->toc_curr = TOC_BASE_OFF;
11870 /* No toc references were found in ISEC. If the code in ISEC makes no
11871 calls, then there's no need to use toc adjusting stubs when branching
11872 into ISEC. Actually, indirect calls from ISEC are OK as they will
11873 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11874 needed, and 2 if a cyclical call-graph was found but no other reason
11875 for a stub was detected. If called from the top level, a return of
11876 2 means the same as a return of 0. */
11879 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11883 /* Mark this section as checked. */
11884 isec->call_check_done = 1;
11886 /* We know none of our code bearing sections will need toc stubs. */
11887 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11890 if (isec->size == 0)
11893 if (isec->output_section == NULL)
11897 if (isec->reloc_count != 0)
11899 Elf_Internal_Rela *relstart, *rel;
11900 Elf_Internal_Sym *local_syms;
11901 struct ppc_link_hash_table *htab;
11903 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11904 info->keep_memory);
11905 if (relstart == NULL)
11908 /* Look for branches to outside of this section. */
11910 htab = ppc_hash_table (info);
11914 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11916 enum elf_ppc64_reloc_type r_type;
11917 unsigned long r_symndx;
11918 struct elf_link_hash_entry *h;
11919 struct ppc_link_hash_entry *eh;
11920 Elf_Internal_Sym *sym;
11922 struct _opd_sec_data *opd;
11926 r_type = ELF64_R_TYPE (rel->r_info);
11927 if (r_type != R_PPC64_REL24
11928 && r_type != R_PPC64_REL14
11929 && r_type != R_PPC64_REL14_BRTAKEN
11930 && r_type != R_PPC64_REL14_BRNTAKEN)
11933 r_symndx = ELF64_R_SYM (rel->r_info);
11934 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11941 /* Calls to dynamic lib functions go through a plt call stub
11943 eh = (struct ppc_link_hash_entry *) h;
11945 && (eh->elf.plt.plist != NULL
11947 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11953 if (sym_sec == NULL)
11954 /* Ignore other undefined symbols. */
11957 /* Assume branches to other sections not included in the
11958 link need stubs too, to cover -R and absolute syms. */
11959 if (sym_sec->output_section == NULL)
11966 sym_value = sym->st_value;
11969 if (h->root.type != bfd_link_hash_defined
11970 && h->root.type != bfd_link_hash_defweak)
11972 sym_value = h->root.u.def.value;
11974 sym_value += rel->r_addend;
11976 /* If this branch reloc uses an opd sym, find the code section. */
11977 opd = get_opd_info (sym_sec);
11980 if (h == NULL && opd->adjust != NULL)
11984 adjust = opd->adjust[OPD_NDX (sym_value)];
11986 /* Assume deleted functions won't ever be called. */
11988 sym_value += adjust;
11991 dest = opd_entry_value (sym_sec, sym_value,
11992 &sym_sec, NULL, FALSE);
11993 if (dest == (bfd_vma) -1)
11998 + sym_sec->output_offset
11999 + sym_sec->output_section->vma);
12001 /* Ignore branch to self. */
12002 if (sym_sec == isec)
12005 /* If the called function uses the toc, we need a stub. */
12006 if (sym_sec->has_toc_reloc
12007 || sym_sec->makes_toc_func_call)
12013 /* Assume any branch that needs a long branch stub might in fact
12014 need a plt_branch stub. A plt_branch stub uses r2. */
12015 else if (dest - (isec->output_offset
12016 + isec->output_section->vma
12017 + rel->r_offset) + (1 << 25)
12018 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12026 /* If calling back to a section in the process of being
12027 tested, we can't say for sure that no toc adjusting stubs
12028 are needed, so don't return zero. */
12029 else if (sym_sec->call_check_in_progress)
12032 /* Branches to another section that itself doesn't have any TOC
12033 references are OK. Recursively call ourselves to check. */
12034 else if (!sym_sec->call_check_done)
12038 /* Mark current section as indeterminate, so that other
12039 sections that call back to current won't be marked as
12041 isec->call_check_in_progress = 1;
12042 recur = toc_adjusting_stub_needed (info, sym_sec);
12043 isec->call_check_in_progress = 0;
12054 if (local_syms != NULL
12055 && (elf_symtab_hdr (isec->owner).contents
12056 != (unsigned char *) local_syms))
12058 if (elf_section_data (isec)->relocs != relstart)
12063 && isec->map_head.s != NULL
12064 && (strcmp (isec->output_section->name, ".init") == 0
12065 || strcmp (isec->output_section->name, ".fini") == 0))
12067 if (isec->map_head.s->has_toc_reloc
12068 || isec->map_head.s->makes_toc_func_call)
12070 else if (!isec->map_head.s->call_check_done)
12073 isec->call_check_in_progress = 1;
12074 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
12075 isec->call_check_in_progress = 0;
12082 isec->makes_toc_func_call = 1;
12087 /* The linker repeatedly calls this function for each input section,
12088 in the order that input sections are linked into output sections.
12089 Build lists of input sections to determine groupings between which
12090 we may insert linker stubs. */
12093 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
12095 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12100 if ((isec->output_section->flags & SEC_CODE) != 0
12101 && isec->output_section->id < htab->sec_info_arr_size)
12103 /* This happens to make the list in reverse order,
12104 which is what we want. */
12105 htab->sec_info[isec->id].u.list
12106 = htab->sec_info[isec->output_section->id].u.list;
12107 htab->sec_info[isec->output_section->id].u.list = isec;
12110 if (htab->multi_toc_needed)
12112 /* Analyse sections that aren't already flagged as needing a
12113 valid toc pointer. Exclude .fixup for the linux kernel.
12114 .fixup contains branches, but only back to the function that
12115 hit an exception. */
12116 if (!(isec->has_toc_reloc
12117 || (isec->flags & SEC_CODE) == 0
12118 || strcmp (isec->name, ".fixup") == 0
12119 || isec->call_check_done))
12121 if (toc_adjusting_stub_needed (info, isec) < 0)
12124 /* Make all sections use the TOC assigned for this object file.
12125 This will be wrong for pasted sections; We fix that in
12126 check_pasted_section(). */
12127 if (elf_gp (isec->owner) != 0)
12128 htab->toc_curr = elf_gp (isec->owner);
12131 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12135 /* Check that all .init and .fini sections use the same toc, if they
12136 have toc relocs. */
12139 check_pasted_section (struct bfd_link_info *info, const char *name)
12141 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12145 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12146 bfd_vma toc_off = 0;
12149 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12150 if (i->has_toc_reloc)
12153 toc_off = htab->sec_info[i->id].toc_off;
12154 else if (toc_off != htab->sec_info[i->id].toc_off)
12159 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12160 if (i->makes_toc_func_call)
12162 toc_off = htab->sec_info[i->id].toc_off;
12166 /* Make sure the whole pasted function uses the same toc offset. */
12168 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12169 htab->sec_info[i->id].toc_off = toc_off;
12175 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12177 return (check_pasted_section (info, ".init")
12178 & check_pasted_section (info, ".fini"));
12181 /* See whether we can group stub sections together. Grouping stub
12182 sections may result in fewer stubs. More importantly, we need to
12183 put all .init* and .fini* stubs at the beginning of the .init or
12184 .fini output sections respectively, because glibc splits the
12185 _init and _fini functions into multiple parts. Putting a stub in
12186 the middle of a function is not a good idea. */
12189 group_sections (struct bfd_link_info *info,
12190 bfd_size_type stub_group_size,
12191 bfd_boolean stubs_always_before_branch)
12193 struct ppc_link_hash_table *htab;
12195 bfd_boolean suppress_size_errors;
12197 htab = ppc_hash_table (info);
12201 suppress_size_errors = FALSE;
12202 if (stub_group_size == 1)
12204 /* Default values. */
12205 if (stubs_always_before_branch)
12206 stub_group_size = 0x1e00000;
12208 stub_group_size = 0x1c00000;
12209 suppress_size_errors = TRUE;
12212 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12216 if (osec->id >= htab->sec_info_arr_size)
12219 tail = htab->sec_info[osec->id].u.list;
12220 while (tail != NULL)
12224 bfd_size_type total;
12225 bfd_boolean big_sec;
12227 struct map_stub *group;
12228 bfd_size_type group_size;
12231 total = tail->size;
12232 group_size = (ppc64_elf_section_data (tail) != NULL
12233 && ppc64_elf_section_data (tail)->has_14bit_branch
12234 ? stub_group_size >> 10 : stub_group_size);
12236 big_sec = total > group_size;
12237 if (big_sec && !suppress_size_errors)
12238 /* xgettext:c-format */
12239 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12240 tail->owner, tail);
12241 curr_toc = htab->sec_info[tail->id].toc_off;
12243 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12244 && ((total += curr->output_offset - prev->output_offset)
12245 < (ppc64_elf_section_data (prev) != NULL
12246 && ppc64_elf_section_data (prev)->has_14bit_branch
12247 ? (group_size = stub_group_size >> 10) : group_size))
12248 && htab->sec_info[prev->id].toc_off == curr_toc)
12251 /* OK, the size from the start of CURR to the end is less
12252 than group_size and thus can be handled by one stub
12253 section. (or the tail section is itself larger than
12254 group_size, in which case we may be toast.) We should
12255 really be keeping track of the total size of stubs added
12256 here, as stubs contribute to the final output section
12257 size. That's a little tricky, and this way will only
12258 break if stubs added make the total size more than 2^25,
12259 ie. for the default stub_group_size, if stubs total more
12260 than 2097152 bytes, or nearly 75000 plt call stubs. */
12261 group = bfd_alloc (curr->owner, sizeof (*group));
12264 group->link_sec = curr;
12265 group->stub_sec = NULL;
12266 group->needs_save_res = 0;
12267 group->tls_get_addr_opt_bctrl = -1u;
12268 group->next = htab->group;
12269 htab->group = group;
12272 prev = htab->sec_info[tail->id].u.list;
12273 /* Set up this stub group. */
12274 htab->sec_info[tail->id].u.group = group;
12276 while (tail != curr && (tail = prev) != NULL);
12278 /* But wait, there's more! Input sections up to group_size
12279 bytes before the stub section can be handled by it too.
12280 Don't do this if we have a really large section after the
12281 stubs, as adding more stubs increases the chance that
12282 branches may not reach into the stub section. */
12283 if (!stubs_always_before_branch && !big_sec)
12286 while (prev != NULL
12287 && ((total += tail->output_offset - prev->output_offset)
12288 < (ppc64_elf_section_data (prev) != NULL
12289 && ppc64_elf_section_data (prev)->has_14bit_branch
12290 ? (group_size = stub_group_size >> 10) : group_size))
12291 && htab->sec_info[prev->id].toc_off == curr_toc)
12294 prev = htab->sec_info[tail->id].u.list;
12295 htab->sec_info[tail->id].u.group = group;
12304 static const unsigned char glink_eh_frame_cie[] =
12306 0, 0, 0, 16, /* length. */
12307 0, 0, 0, 0, /* id. */
12308 1, /* CIE version. */
12309 'z', 'R', 0, /* Augmentation string. */
12310 4, /* Code alignment. */
12311 0x78, /* Data alignment. */
12313 1, /* Augmentation size. */
12314 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12315 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12319 stub_eh_frame_size (struct map_stub *group, size_t align)
12321 size_t this_size = 17;
12322 if (group->tls_get_addr_opt_bctrl != -1u)
12324 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12327 else if (to_bctrl < 256)
12329 else if (to_bctrl < 65536)
12335 this_size = (this_size + align - 1) & -align;
12339 /* Stripping output sections is normally done before dynamic section
12340 symbols have been allocated. This function is called later, and
12341 handles cases like htab->brlt which is mapped to its own output
12345 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12347 if (isec->size == 0
12348 && isec->output_section->size == 0
12349 && !(isec->output_section->flags & SEC_KEEP)
12350 && !bfd_section_removed_from_list (info->output_bfd,
12351 isec->output_section)
12352 && elf_section_data (isec->output_section)->dynindx == 0)
12354 isec->output_section->flags |= SEC_EXCLUDE;
12355 bfd_section_list_remove (info->output_bfd, isec->output_section);
12356 info->output_bfd->section_count--;
12360 /* Determine and set the size of the stub section for a final link.
12362 The basic idea here is to examine all the relocations looking for
12363 PC-relative calls to a target that is unreachable with a "bl"
12367 ppc64_elf_size_stubs (struct bfd_link_info *info)
12369 bfd_size_type stub_group_size;
12370 bfd_boolean stubs_always_before_branch;
12371 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12376 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12377 htab->params->plt_thread_safe = 1;
12378 if (!htab->opd_abi)
12379 htab->params->plt_thread_safe = 0;
12380 else if (htab->params->plt_thread_safe == -1)
12382 static const char *const thread_starter[] =
12386 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12388 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12389 "mq_notify", "create_timer",
12394 "GOMP_parallel_start",
12395 "GOMP_parallel_loop_static",
12396 "GOMP_parallel_loop_static_start",
12397 "GOMP_parallel_loop_dynamic",
12398 "GOMP_parallel_loop_dynamic_start",
12399 "GOMP_parallel_loop_guided",
12400 "GOMP_parallel_loop_guided_start",
12401 "GOMP_parallel_loop_runtime",
12402 "GOMP_parallel_loop_runtime_start",
12403 "GOMP_parallel_sections",
12404 "GOMP_parallel_sections_start",
12410 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12412 struct elf_link_hash_entry *h;
12413 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12414 FALSE, FALSE, TRUE);
12415 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12416 if (htab->params->plt_thread_safe)
12420 stubs_always_before_branch = htab->params->group_size < 0;
12421 if (htab->params->group_size < 0)
12422 stub_group_size = -htab->params->group_size;
12424 stub_group_size = htab->params->group_size;
12426 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12429 #define STUB_SHRINK_ITER 20
12430 /* Loop until no stubs added. After iteration 20 of this loop we may
12431 exit on a stub section shrinking. This is to break out of a
12432 pathological case where adding stubs on one iteration decreases
12433 section gaps (perhaps due to alignment), which then requires
12434 fewer or smaller stubs on the next iteration. */
12439 unsigned int bfd_indx;
12440 struct map_stub *group;
12442 htab->stub_iteration += 1;
12444 for (input_bfd = info->input_bfds, bfd_indx = 0;
12446 input_bfd = input_bfd->link.next, bfd_indx++)
12448 Elf_Internal_Shdr *symtab_hdr;
12450 Elf_Internal_Sym *local_syms = NULL;
12452 if (!is_ppc64_elf (input_bfd))
12455 /* We'll need the symbol table in a second. */
12456 symtab_hdr = &elf_symtab_hdr (input_bfd);
12457 if (symtab_hdr->sh_info == 0)
12460 /* Walk over each section attached to the input bfd. */
12461 for (section = input_bfd->sections;
12463 section = section->next)
12465 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12467 /* If there aren't any relocs, then there's nothing more
12469 if ((section->flags & SEC_RELOC) == 0
12470 || (section->flags & SEC_ALLOC) == 0
12471 || (section->flags & SEC_LOAD) == 0
12472 || (section->flags & SEC_CODE) == 0
12473 || section->reloc_count == 0)
12476 /* If this section is a link-once section that will be
12477 discarded, then don't create any stubs. */
12478 if (section->output_section == NULL
12479 || section->output_section->owner != info->output_bfd)
12482 /* Get the relocs. */
12484 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12485 info->keep_memory);
12486 if (internal_relocs == NULL)
12487 goto error_ret_free_local;
12489 /* Now examine each relocation. */
12490 irela = internal_relocs;
12491 irelaend = irela + section->reloc_count;
12492 for (; irela < irelaend; irela++)
12494 enum elf_ppc64_reloc_type r_type;
12495 unsigned int r_indx;
12496 enum ppc_stub_type stub_type;
12497 struct ppc_stub_hash_entry *stub_entry;
12498 asection *sym_sec, *code_sec;
12499 bfd_vma sym_value, code_value;
12500 bfd_vma destination;
12501 unsigned long local_off;
12502 bfd_boolean ok_dest;
12503 struct ppc_link_hash_entry *hash;
12504 struct ppc_link_hash_entry *fdh;
12505 struct elf_link_hash_entry *h;
12506 Elf_Internal_Sym *sym;
12508 const asection *id_sec;
12509 struct _opd_sec_data *opd;
12510 struct plt_entry *plt_ent;
12512 r_type = ELF64_R_TYPE (irela->r_info);
12513 r_indx = ELF64_R_SYM (irela->r_info);
12515 if (r_type >= R_PPC64_max)
12517 bfd_set_error (bfd_error_bad_value);
12518 goto error_ret_free_internal;
12521 /* Only look for stubs on branch instructions. */
12522 if (r_type != R_PPC64_REL24
12523 && r_type != R_PPC64_REL14
12524 && r_type != R_PPC64_REL14_BRTAKEN
12525 && r_type != R_PPC64_REL14_BRNTAKEN)
12528 /* Now determine the call target, its name, value,
12530 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12531 r_indx, input_bfd))
12532 goto error_ret_free_internal;
12533 hash = (struct ppc_link_hash_entry *) h;
12540 sym_value = sym->st_value;
12541 if (sym_sec != NULL
12542 && sym_sec->output_section != NULL)
12545 else if (hash->elf.root.type == bfd_link_hash_defined
12546 || hash->elf.root.type == bfd_link_hash_defweak)
12548 sym_value = hash->elf.root.u.def.value;
12549 if (sym_sec->output_section != NULL)
12552 else if (hash->elf.root.type == bfd_link_hash_undefweak
12553 || hash->elf.root.type == bfd_link_hash_undefined)
12555 /* Recognise an old ABI func code entry sym, and
12556 use the func descriptor sym instead if it is
12558 if (hash->elf.root.root.string[0] == '.'
12559 && hash->oh != NULL)
12561 fdh = ppc_follow_link (hash->oh);
12562 if (fdh->elf.root.type == bfd_link_hash_defined
12563 || fdh->elf.root.type == bfd_link_hash_defweak)
12565 sym_sec = fdh->elf.root.u.def.section;
12566 sym_value = fdh->elf.root.u.def.value;
12567 if (sym_sec->output_section != NULL)
12576 bfd_set_error (bfd_error_bad_value);
12577 goto error_ret_free_internal;
12584 sym_value += irela->r_addend;
12585 destination = (sym_value
12586 + sym_sec->output_offset
12587 + sym_sec->output_section->vma);
12588 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12593 code_sec = sym_sec;
12594 code_value = sym_value;
12595 opd = get_opd_info (sym_sec);
12600 if (hash == NULL && opd->adjust != NULL)
12602 long adjust = opd->adjust[OPD_NDX (sym_value)];
12605 code_value += adjust;
12606 sym_value += adjust;
12608 dest = opd_entry_value (sym_sec, sym_value,
12609 &code_sec, &code_value, FALSE);
12610 if (dest != (bfd_vma) -1)
12612 destination = dest;
12615 /* Fixup old ABI sym to point at code
12617 hash->elf.root.type = bfd_link_hash_defweak;
12618 hash->elf.root.u.def.section = code_sec;
12619 hash->elf.root.u.def.value = code_value;
12624 /* Determine what (if any) linker stub is needed. */
12626 stub_type = ppc_type_of_stub (section, irela, &hash,
12627 &plt_ent, destination,
12630 if (stub_type != ppc_stub_plt_call)
12632 /* Check whether we need a TOC adjusting stub.
12633 Since the linker pastes together pieces from
12634 different object files when creating the
12635 _init and _fini functions, it may be that a
12636 call to what looks like a local sym is in
12637 fact a call needing a TOC adjustment. */
12638 if (code_sec != NULL
12639 && code_sec->output_section != NULL
12640 && (htab->sec_info[code_sec->id].toc_off
12641 != htab->sec_info[section->id].toc_off)
12642 && (code_sec->has_toc_reloc
12643 || code_sec->makes_toc_func_call))
12644 stub_type = ppc_stub_long_branch_r2off;
12647 if (stub_type == ppc_stub_none)
12650 /* __tls_get_addr calls might be eliminated. */
12651 if (stub_type != ppc_stub_plt_call
12653 && (hash == htab->tls_get_addr
12654 || hash == htab->tls_get_addr_fd)
12655 && section->has_tls_reloc
12656 && irela != internal_relocs)
12658 /* Get tls info. */
12659 unsigned char *tls_mask;
12661 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12662 irela - 1, input_bfd))
12663 goto error_ret_free_internal;
12664 if (*tls_mask != 0)
12668 if (stub_type == ppc_stub_plt_call)
12671 && htab->params->plt_localentry0 != 0
12672 && is_elfv2_localentry0 (&hash->elf))
12673 htab->has_plt_localentry0 = 1;
12674 else if (irela + 1 < irelaend
12675 && irela[1].r_offset == irela->r_offset + 4
12676 && (ELF64_R_TYPE (irela[1].r_info)
12677 == R_PPC64_TOCSAVE))
12679 if (!tocsave_find (htab, INSERT,
12680 &local_syms, irela + 1, input_bfd))
12681 goto error_ret_free_internal;
12684 stub_type = ppc_stub_plt_call_r2save;
12687 /* Support for grouping stub sections. */
12688 id_sec = htab->sec_info[section->id].u.group->link_sec;
12690 /* Get the name of this stub. */
12691 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12693 goto error_ret_free_internal;
12695 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12696 stub_name, FALSE, FALSE);
12697 if (stub_entry != NULL)
12699 /* The proper stub has already been created. */
12701 if (stub_type == ppc_stub_plt_call_r2save)
12702 stub_entry->stub_type = stub_type;
12706 stub_entry = ppc_add_stub (stub_name, section, info);
12707 if (stub_entry == NULL)
12710 error_ret_free_internal:
12711 if (elf_section_data (section)->relocs == NULL)
12712 free (internal_relocs);
12713 error_ret_free_local:
12714 if (local_syms != NULL
12715 && (symtab_hdr->contents
12716 != (unsigned char *) local_syms))
12721 stub_entry->stub_type = stub_type;
12722 if (stub_type != ppc_stub_plt_call
12723 && stub_type != ppc_stub_plt_call_r2save)
12725 stub_entry->target_value = code_value;
12726 stub_entry->target_section = code_sec;
12730 stub_entry->target_value = sym_value;
12731 stub_entry->target_section = sym_sec;
12733 stub_entry->h = hash;
12734 stub_entry->plt_ent = plt_ent;
12735 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12737 if (stub_entry->h != NULL)
12738 htab->stub_globals += 1;
12741 /* We're done with the internal relocs, free them. */
12742 if (elf_section_data (section)->relocs != internal_relocs)
12743 free (internal_relocs);
12746 if (local_syms != NULL
12747 && symtab_hdr->contents != (unsigned char *) local_syms)
12749 if (!info->keep_memory)
12752 symtab_hdr->contents = (unsigned char *) local_syms;
12756 /* We may have added some stubs. Find out the new size of the
12758 for (group = htab->group; group != NULL; group = group->next)
12759 if (group->stub_sec != NULL)
12761 asection *stub_sec = group->stub_sec;
12763 if (htab->stub_iteration <= STUB_SHRINK_ITER
12764 || stub_sec->rawsize < stub_sec->size)
12765 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12766 stub_sec->rawsize = stub_sec->size;
12767 stub_sec->size = 0;
12768 stub_sec->reloc_count = 0;
12769 stub_sec->flags &= ~SEC_RELOC;
12772 htab->brlt->size = 0;
12773 htab->brlt->reloc_count = 0;
12774 htab->brlt->flags &= ~SEC_RELOC;
12775 if (htab->relbrlt != NULL)
12776 htab->relbrlt->size = 0;
12778 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12780 for (group = htab->group; group != NULL; group = group->next)
12781 if (group->needs_save_res)
12782 group->stub_sec->size += htab->sfpr->size;
12784 if (info->emitrelocations
12785 && htab->glink != NULL && htab->glink->size != 0)
12787 htab->glink->reloc_count = 1;
12788 htab->glink->flags |= SEC_RELOC;
12791 if (htab->glink_eh_frame != NULL
12792 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12793 && htab->glink_eh_frame->output_section->size != 0)
12795 size_t size = 0, align = 4;
12797 for (group = htab->group; group != NULL; group = group->next)
12798 if (group->stub_sec != NULL)
12799 size += stub_eh_frame_size (group, align);
12800 if (htab->glink != NULL && htab->glink->size != 0)
12801 size += (24 + align - 1) & -align;
12803 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12804 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12805 size = (size + align - 1) & -align;
12806 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12807 htab->glink_eh_frame->size = size;
12810 if (htab->params->plt_stub_align != 0)
12811 for (group = htab->group; group != NULL; group = group->next)
12812 if (group->stub_sec != NULL)
12813 group->stub_sec->size = ((group->stub_sec->size
12814 + (1 << htab->params->plt_stub_align) - 1)
12815 & -(1 << htab->params->plt_stub_align));
12817 for (group = htab->group; group != NULL; group = group->next)
12818 if (group->stub_sec != NULL
12819 && group->stub_sec->rawsize != group->stub_sec->size
12820 && (htab->stub_iteration <= STUB_SHRINK_ITER
12821 || group->stub_sec->rawsize < group->stub_sec->size))
12825 && (htab->glink_eh_frame == NULL
12826 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12829 /* Ask the linker to do its stuff. */
12830 (*htab->params->layout_sections_again) ();
12833 if (htab->glink_eh_frame != NULL
12834 && htab->glink_eh_frame->size != 0)
12837 bfd_byte *p, *last_fde;
12838 size_t last_fde_len, size, align, pad;
12839 struct map_stub *group;
12841 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12844 htab->glink_eh_frame->contents = p;
12848 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12849 /* CIE length (rewrite in case little-endian). */
12850 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12851 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12852 p += last_fde_len + 4;
12854 for (group = htab->group; group != NULL; group = group->next)
12855 if (group->stub_sec != NULL)
12858 last_fde_len = stub_eh_frame_size (group, align) - 4;
12860 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12863 val = p - htab->glink_eh_frame->contents;
12864 bfd_put_32 (htab->elf.dynobj, val, p);
12866 /* Offset to stub section, written later. */
12868 /* stub section size. */
12869 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
12871 /* Augmentation. */
12873 if (group->tls_get_addr_opt_bctrl != -1u)
12875 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12877 /* This FDE needs more than just the default.
12878 Describe __tls_get_addr_opt stub LR. */
12880 *p++ = DW_CFA_advance_loc + to_bctrl;
12881 else if (to_bctrl < 256)
12883 *p++ = DW_CFA_advance_loc1;
12886 else if (to_bctrl < 65536)
12888 *p++ = DW_CFA_advance_loc2;
12889 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
12894 *p++ = DW_CFA_advance_loc4;
12895 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
12898 *p++ = DW_CFA_offset_extended_sf;
12900 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
12901 *p++ = DW_CFA_advance_loc + 4;
12902 *p++ = DW_CFA_restore_extended;
12906 p = last_fde + last_fde_len + 4;
12908 if (htab->glink != NULL && htab->glink->size != 0)
12911 last_fde_len = ((24 + align - 1) & -align) - 4;
12913 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12916 val = p - htab->glink_eh_frame->contents;
12917 bfd_put_32 (htab->elf.dynobj, val, p);
12919 /* Offset to .glink, written later. */
12922 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12924 /* Augmentation. */
12927 *p++ = DW_CFA_advance_loc + 1;
12928 *p++ = DW_CFA_register;
12930 *p++ = htab->opd_abi ? 12 : 0;
12931 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
12932 *p++ = DW_CFA_restore_extended;
12934 p += ((24 + align - 1) & -align) - 24;
12936 /* Subsume any padding into the last FDE if user .eh_frame
12937 sections are aligned more than glink_eh_frame. Otherwise any
12938 zero padding will be seen as a terminator. */
12939 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12940 size = p - htab->glink_eh_frame->contents;
12941 pad = ((size + align - 1) & -align) - size;
12942 htab->glink_eh_frame->size = size + pad;
12943 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12946 maybe_strip_output (info, htab->brlt);
12947 if (htab->glink_eh_frame != NULL)
12948 maybe_strip_output (info, htab->glink_eh_frame);
12953 /* Called after we have determined section placement. If sections
12954 move, we'll be called again. Provide a value for TOCstart. */
12957 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12960 bfd_vma TOCstart, adjust;
12964 struct elf_link_hash_entry *h;
12965 struct elf_link_hash_table *htab = elf_hash_table (info);
12967 if (is_elf_hash_table (htab)
12968 && htab->hgot != NULL)
12972 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12973 if (is_elf_hash_table (htab))
12977 && h->root.type == bfd_link_hash_defined
12978 && !h->root.linker_def
12979 && (!is_elf_hash_table (htab)
12980 || h->def_regular))
12982 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12983 + h->root.u.def.section->output_offset
12984 + h->root.u.def.section->output_section->vma);
12985 _bfd_set_gp_value (obfd, TOCstart);
12990 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12991 order. The TOC starts where the first of these sections starts. */
12992 s = bfd_get_section_by_name (obfd, ".got");
12993 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12994 s = bfd_get_section_by_name (obfd, ".toc");
12995 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12996 s = bfd_get_section_by_name (obfd, ".tocbss");
12997 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12998 s = bfd_get_section_by_name (obfd, ".plt");
12999 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13001 /* This may happen for
13002 o references to TOC base (SYM@toc / TOC[tc0]) without a
13004 o bad linker script
13005 o --gc-sections and empty TOC sections
13007 FIXME: Warn user? */
13009 /* Look for a likely section. We probably won't even be
13011 for (s = obfd->sections; s != NULL; s = s->next)
13012 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
13014 == (SEC_ALLOC | SEC_SMALL_DATA))
13017 for (s = obfd->sections; s != NULL; s = s->next)
13018 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
13019 == (SEC_ALLOC | SEC_SMALL_DATA))
13022 for (s = obfd->sections; s != NULL; s = s->next)
13023 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
13027 for (s = obfd->sections; s != NULL; s = s->next)
13028 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
13034 TOCstart = s->output_section->vma + s->output_offset;
13036 /* Force alignment. */
13037 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
13038 TOCstart -= adjust;
13039 _bfd_set_gp_value (obfd, TOCstart);
13041 if (info != NULL && s != NULL)
13043 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13047 if (htab->elf.hgot != NULL)
13049 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
13050 htab->elf.hgot->root.u.def.section = s;
13055 struct bfd_link_hash_entry *bh = NULL;
13056 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
13057 s, TOC_BASE_OFF - adjust,
13058 NULL, FALSE, FALSE, &bh);
13064 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13065 write out any global entry stubs. */
13068 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
13070 struct bfd_link_info *info;
13071 struct ppc_link_hash_table *htab;
13072 struct plt_entry *pent;
13075 if (h->root.type == bfd_link_hash_indirect)
13078 if (!h->pointer_equality_needed)
13081 if (h->def_regular)
13085 htab = ppc_hash_table (info);
13090 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
13091 if (pent->plt.offset != (bfd_vma) -1
13092 && pent->addend == 0)
13098 p = s->contents + h->root.u.def.value;
13099 plt = htab->elf.splt;
13100 if (!htab->elf.dynamic_sections_created
13101 || h->dynindx == -1)
13102 plt = htab->elf.iplt;
13103 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
13104 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
13106 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
13108 info->callbacks->einfo
13109 (_("%P: linkage table error against `%T'\n"),
13110 h->root.root.string);
13111 bfd_set_error (bfd_error_bad_value);
13112 htab->stub_error = TRUE;
13115 htab->stub_count[ppc_stub_global_entry - 1] += 1;
13116 if (htab->params->emit_stub_syms)
13118 size_t len = strlen (h->root.root.string);
13119 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
13124 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
13125 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13128 if (h->root.type == bfd_link_hash_new)
13130 h->root.type = bfd_link_hash_defined;
13131 h->root.u.def.section = s;
13132 h->root.u.def.value = p - s->contents;
13133 h->ref_regular = 1;
13134 h->def_regular = 1;
13135 h->ref_regular_nonweak = 1;
13136 h->forced_local = 1;
13138 h->root.linker_def = 1;
13142 if (PPC_HA (off) != 0)
13144 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13147 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13149 bfd_put_32 (s->owner, MTCTR_R12, p);
13151 bfd_put_32 (s->owner, BCTR, p);
13157 /* Build all the stubs associated with the current output file.
13158 The stubs are kept in a hash table attached to the main linker
13159 hash table. This function is called via gldelf64ppc_finish. */
13162 ppc64_elf_build_stubs (struct bfd_link_info *info,
13165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13166 struct map_stub *group;
13167 asection *stub_sec;
13169 int stub_sec_count = 0;
13174 /* Allocate memory to hold the linker stubs. */
13175 for (group = htab->group; group != NULL; group = group->next)
13176 if ((stub_sec = group->stub_sec) != NULL
13177 && stub_sec->size != 0)
13179 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13180 if (stub_sec->contents == NULL)
13182 stub_sec->size = 0;
13185 if (htab->glink != NULL && htab->glink->size != 0)
13190 /* Build the .glink plt call stub. */
13191 if (htab->params->emit_stub_syms)
13193 struct elf_link_hash_entry *h;
13194 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13195 TRUE, FALSE, FALSE);
13198 if (h->root.type == bfd_link_hash_new)
13200 h->root.type = bfd_link_hash_defined;
13201 h->root.u.def.section = htab->glink;
13202 h->root.u.def.value = 8;
13203 h->ref_regular = 1;
13204 h->def_regular = 1;
13205 h->ref_regular_nonweak = 1;
13206 h->forced_local = 1;
13208 h->root.linker_def = 1;
13211 plt0 = (htab->elf.splt->output_section->vma
13212 + htab->elf.splt->output_offset
13214 if (info->emitrelocations)
13216 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13219 r->r_offset = (htab->glink->output_offset
13220 + htab->glink->output_section->vma);
13221 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13222 r->r_addend = plt0;
13224 p = htab->glink->contents;
13225 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13226 bfd_put_64 (htab->glink->owner, plt0, p);
13230 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13232 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13234 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13236 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13238 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13240 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13242 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13244 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13246 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13248 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13253 bfd_put_32 (htab->glink->owner, MFLR_R0, 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, STD_R2_0R1 + 24, p);
13261 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13263 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13265 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13267 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13269 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13271 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13273 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13275 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13277 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13280 bfd_put_32 (htab->glink->owner, BCTR, p);
13282 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13284 bfd_put_32 (htab->glink->owner, NOP, p);
13288 /* Build the .glink lazy link call stubs. */
13290 while (p < htab->glink->contents + htab->glink->rawsize)
13296 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13301 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13303 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13308 bfd_put_32 (htab->glink->owner,
13309 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13314 /* Build .glink global entry stubs. */
13315 if (htab->glink->size > htab->glink->rawsize)
13316 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13319 if (htab->brlt != NULL && htab->brlt->size != 0)
13321 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13323 if (htab->brlt->contents == NULL)
13326 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13328 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13329 htab->relbrlt->size);
13330 if (htab->relbrlt->contents == NULL)
13334 /* Build the stubs as directed by the stub hash table. */
13335 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13337 for (group = htab->group; group != NULL; group = group->next)
13338 if (group->needs_save_res)
13340 stub_sec = group->stub_sec;
13341 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13343 if (htab->params->emit_stub_syms)
13347 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13348 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13351 stub_sec->size += htab->sfpr->size;
13354 if (htab->relbrlt != NULL)
13355 htab->relbrlt->reloc_count = 0;
13357 if (htab->params->plt_stub_align != 0)
13358 for (group = htab->group; group != NULL; group = group->next)
13359 if ((stub_sec = group->stub_sec) != NULL)
13360 stub_sec->size = ((stub_sec->size
13361 + (1 << htab->params->plt_stub_align) - 1)
13362 & -(1 << htab->params->plt_stub_align));
13364 for (group = htab->group; group != NULL; group = group->next)
13365 if ((stub_sec = group->stub_sec) != NULL)
13367 stub_sec_count += 1;
13368 if (stub_sec->rawsize != stub_sec->size
13369 && (htab->stub_iteration <= STUB_SHRINK_ITER
13370 || stub_sec->rawsize < stub_sec->size))
13374 /* Note that the glink_eh_frame check here is not only testing that
13375 the generated size matched the calculated size but also that
13376 bfd_elf_discard_info didn't make any changes to the section. */
13378 || (htab->glink_eh_frame != NULL
13379 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13381 htab->stub_error = TRUE;
13382 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13385 if (htab->stub_error)
13390 *stats = bfd_malloc (500);
13391 if (*stats == NULL)
13394 sprintf (*stats, _("linker stubs in %u group%s\n"
13396 " toc adjust %lu\n"
13397 " long branch %lu\n"
13398 " long toc adj %lu\n"
13400 " plt call toc %lu\n"
13401 " global entry %lu"),
13403 stub_sec_count == 1 ? "" : "s",
13404 htab->stub_count[ppc_stub_long_branch - 1],
13405 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13406 htab->stub_count[ppc_stub_plt_branch - 1],
13407 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13408 htab->stub_count[ppc_stub_plt_call - 1],
13409 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13410 htab->stub_count[ppc_stub_global_entry - 1]);
13415 /* What to do when ld finds relocations against symbols defined in
13416 discarded sections. */
13418 static unsigned int
13419 ppc64_elf_action_discarded (asection *sec)
13421 if (strcmp (".opd", sec->name) == 0)
13424 if (strcmp (".toc", sec->name) == 0)
13427 if (strcmp (".toc1", sec->name) == 0)
13430 return _bfd_elf_default_action_discarded (sec);
13433 /* The RELOCATE_SECTION function is called by the ELF backend linker
13434 to handle the relocations for a section.
13436 The relocs are always passed as Rela structures; if the section
13437 actually uses Rel structures, the r_addend field will always be
13440 This function is responsible for adjust the section contents as
13441 necessary, and (if using Rela relocs and generating a
13442 relocatable output file) adjusting the reloc addend as
13445 This function does not have to worry about setting the reloc
13446 address or the reloc symbol index.
13448 LOCAL_SYMS is a pointer to the swapped in local symbols.
13450 LOCAL_SECTIONS is an array giving the section in the input file
13451 corresponding to the st_shndx field of each local symbol.
13453 The global hash table entry for the global symbols can be found
13454 via elf_sym_hashes (input_bfd).
13456 When generating relocatable output, this function must handle
13457 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13458 going to be the section symbol corresponding to the output
13459 section, which means that the addend must be adjusted
13463 ppc64_elf_relocate_section (bfd *output_bfd,
13464 struct bfd_link_info *info,
13466 asection *input_section,
13467 bfd_byte *contents,
13468 Elf_Internal_Rela *relocs,
13469 Elf_Internal_Sym *local_syms,
13470 asection **local_sections)
13472 struct ppc_link_hash_table *htab;
13473 Elf_Internal_Shdr *symtab_hdr;
13474 struct elf_link_hash_entry **sym_hashes;
13475 Elf_Internal_Rela *rel;
13476 Elf_Internal_Rela *wrel;
13477 Elf_Internal_Rela *relend;
13478 Elf_Internal_Rela outrel;
13480 struct got_entry **local_got_ents;
13482 bfd_boolean ret = TRUE;
13483 bfd_boolean is_opd;
13484 /* Assume 'at' branch hints. */
13485 bfd_boolean is_isa_v2 = TRUE;
13486 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13488 /* Initialize howto table if needed. */
13489 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13492 htab = ppc_hash_table (info);
13496 /* Don't relocate stub sections. */
13497 if (input_section->owner == htab->params->stub_bfd)
13500 BFD_ASSERT (is_ppc64_elf (input_bfd));
13502 local_got_ents = elf_local_got_ents (input_bfd);
13503 TOCstart = elf_gp (output_bfd);
13504 symtab_hdr = &elf_symtab_hdr (input_bfd);
13505 sym_hashes = elf_sym_hashes (input_bfd);
13506 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13508 rel = wrel = relocs;
13509 relend = relocs + input_section->reloc_count;
13510 for (; rel < relend; wrel++, rel++)
13512 enum elf_ppc64_reloc_type r_type;
13514 bfd_reloc_status_type r;
13515 Elf_Internal_Sym *sym;
13517 struct elf_link_hash_entry *h_elf;
13518 struct ppc_link_hash_entry *h;
13519 struct ppc_link_hash_entry *fdh;
13520 const char *sym_name;
13521 unsigned long r_symndx, toc_symndx;
13522 bfd_vma toc_addend;
13523 unsigned char tls_mask, tls_gd, tls_type;
13524 unsigned char sym_type;
13525 bfd_vma relocation;
13526 bfd_boolean unresolved_reloc;
13527 bfd_boolean warned;
13528 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13531 struct ppc_stub_hash_entry *stub_entry;
13532 bfd_vma max_br_offset;
13534 Elf_Internal_Rela orig_rel;
13535 reloc_howto_type *howto;
13536 struct reloc_howto_struct alt_howto;
13541 r_type = ELF64_R_TYPE (rel->r_info);
13542 r_symndx = ELF64_R_SYM (rel->r_info);
13544 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13545 symbol of the previous ADDR64 reloc. The symbol gives us the
13546 proper TOC base to use. */
13547 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13549 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13551 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13557 unresolved_reloc = FALSE;
13560 if (r_symndx < symtab_hdr->sh_info)
13562 /* It's a local symbol. */
13563 struct _opd_sec_data *opd;
13565 sym = local_syms + r_symndx;
13566 sec = local_sections[r_symndx];
13567 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13568 sym_type = ELF64_ST_TYPE (sym->st_info);
13569 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13570 opd = get_opd_info (sec);
13571 if (opd != NULL && opd->adjust != NULL)
13573 long adjust = opd->adjust[OPD_NDX (sym->st_value
13579 /* If this is a relocation against the opd section sym
13580 and we have edited .opd, adjust the reloc addend so
13581 that ld -r and ld --emit-relocs output is correct.
13582 If it is a reloc against some other .opd symbol,
13583 then the symbol value will be adjusted later. */
13584 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13585 rel->r_addend += adjust;
13587 relocation += adjust;
13593 bfd_boolean ignored;
13595 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13596 r_symndx, symtab_hdr, sym_hashes,
13597 h_elf, sec, relocation,
13598 unresolved_reloc, warned, ignored);
13599 sym_name = h_elf->root.root.string;
13600 sym_type = h_elf->type;
13602 && sec->owner == output_bfd
13603 && strcmp (sec->name, ".opd") == 0)
13605 /* This is a symbol defined in a linker script. All
13606 such are defined in output sections, even those
13607 defined by simple assignment from a symbol defined in
13608 an input section. Transfer the symbol to an
13609 appropriate input .opd section, so that a branch to
13610 this symbol will be mapped to the location specified
13611 by the opd entry. */
13612 struct bfd_link_order *lo;
13613 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13614 if (lo->type == bfd_indirect_link_order)
13616 asection *isec = lo->u.indirect.section;
13617 if (h_elf->root.u.def.value >= isec->output_offset
13618 && h_elf->root.u.def.value < (isec->output_offset
13621 h_elf->root.u.def.value -= isec->output_offset;
13622 h_elf->root.u.def.section = isec;
13629 h = (struct ppc_link_hash_entry *) h_elf;
13631 if (sec != NULL && discarded_section (sec))
13633 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13634 input_bfd, input_section,
13635 contents + rel->r_offset);
13636 wrel->r_offset = rel->r_offset;
13638 wrel->r_addend = 0;
13640 /* For ld -r, remove relocations in debug sections against
13641 sections defined in discarded sections. Not done for
13642 non-debug to preserve relocs in .eh_frame which the
13643 eh_frame editing code expects to be present. */
13644 if (bfd_link_relocatable (info)
13645 && (input_section->flags & SEC_DEBUGGING))
13651 if (bfd_link_relocatable (info))
13654 if (h != NULL && &h->elf == htab->elf.hgot)
13656 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13657 sec = bfd_abs_section_ptr;
13658 unresolved_reloc = FALSE;
13661 /* TLS optimizations. Replace instruction sequences and relocs
13662 based on information we collected in tls_optimize. We edit
13663 RELOCS so that --emit-relocs will output something sensible
13664 for the final instruction stream. */
13669 tls_mask = h->tls_mask;
13670 else if (local_got_ents != NULL)
13672 struct plt_entry **local_plt = (struct plt_entry **)
13673 (local_got_ents + symtab_hdr->sh_info);
13674 unsigned char *lgot_masks = (unsigned char *)
13675 (local_plt + symtab_hdr->sh_info);
13676 tls_mask = lgot_masks[r_symndx];
13679 && (r_type == R_PPC64_TLS
13680 || r_type == R_PPC64_TLSGD
13681 || r_type == R_PPC64_TLSLD))
13683 /* Check for toc tls entries. */
13684 unsigned char *toc_tls;
13686 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13687 &local_syms, rel, input_bfd))
13691 tls_mask = *toc_tls;
13694 /* Check that tls relocs are used with tls syms, and non-tls
13695 relocs are used with non-tls syms. */
13696 if (r_symndx != STN_UNDEF
13697 && r_type != R_PPC64_NONE
13699 || h->elf.root.type == bfd_link_hash_defined
13700 || h->elf.root.type == bfd_link_hash_defweak)
13701 && (IS_PPC64_TLS_RELOC (r_type)
13702 != (sym_type == STT_TLS
13703 || (sym_type == STT_SECTION
13704 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13707 && (r_type == R_PPC64_TLS
13708 || r_type == R_PPC64_TLSGD
13709 || r_type == R_PPC64_TLSLD))
13710 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13713 info->callbacks->einfo
13714 (!IS_PPC64_TLS_RELOC (r_type)
13715 /* xgettext:c-format */
13716 ? _("%H: %s used with TLS symbol `%T'\n")
13717 /* xgettext:c-format */
13718 : _("%H: %s used with non-TLS symbol `%T'\n"),
13719 input_bfd, input_section, rel->r_offset,
13720 ppc64_elf_howto_table[r_type]->name,
13724 /* Ensure reloc mapping code below stays sane. */
13725 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13726 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13727 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13728 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13729 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13730 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13731 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13732 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13733 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13734 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13742 case R_PPC64_LO_DS_OPT:
13743 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13744 if ((insn & (0x3f << 26)) != 58u << 26)
13746 insn += (14u << 26) - (58u << 26);
13747 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13748 r_type = R_PPC64_TOC16_LO;
13749 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13752 case R_PPC64_TOC16:
13753 case R_PPC64_TOC16_LO:
13754 case R_PPC64_TOC16_DS:
13755 case R_PPC64_TOC16_LO_DS:
13757 /* Check for toc tls entries. */
13758 unsigned char *toc_tls;
13761 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13762 &local_syms, rel, input_bfd);
13768 tls_mask = *toc_tls;
13769 if (r_type == R_PPC64_TOC16_DS
13770 || r_type == R_PPC64_TOC16_LO_DS)
13773 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13778 /* If we found a GD reloc pair, then we might be
13779 doing a GD->IE transition. */
13782 tls_gd = TLS_TPRELGD;
13783 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13786 else if (retval == 3)
13788 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13796 case R_PPC64_GOT_TPREL16_HI:
13797 case R_PPC64_GOT_TPREL16_HA:
13799 && (tls_mask & TLS_TPREL) == 0)
13801 rel->r_offset -= d_offset;
13802 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13803 r_type = R_PPC64_NONE;
13804 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13808 case R_PPC64_GOT_TPREL16_DS:
13809 case R_PPC64_GOT_TPREL16_LO_DS:
13811 && (tls_mask & TLS_TPREL) == 0)
13814 insn = bfd_get_32 (input_bfd,
13815 contents + rel->r_offset - d_offset);
13817 insn |= 0x3c0d0000; /* addis 0,13,0 */
13818 bfd_put_32 (input_bfd, insn,
13819 contents + rel->r_offset - d_offset);
13820 r_type = R_PPC64_TPREL16_HA;
13821 if (toc_symndx != 0)
13823 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13824 rel->r_addend = toc_addend;
13825 /* We changed the symbol. Start over in order to
13826 get h, sym, sec etc. right. */
13830 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13836 && (tls_mask & TLS_TPREL) == 0)
13838 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13839 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13842 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13843 /* Was PPC64_TLS which sits on insn boundary, now
13844 PPC64_TPREL16_LO which is at low-order half-word. */
13845 rel->r_offset += d_offset;
13846 r_type = R_PPC64_TPREL16_LO;
13847 if (toc_symndx != 0)
13849 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13850 rel->r_addend = toc_addend;
13851 /* We changed the symbol. Start over in order to
13852 get h, sym, sec etc. right. */
13856 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13860 case R_PPC64_GOT_TLSGD16_HI:
13861 case R_PPC64_GOT_TLSGD16_HA:
13862 tls_gd = TLS_TPRELGD;
13863 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13867 case R_PPC64_GOT_TLSLD16_HI:
13868 case R_PPC64_GOT_TLSLD16_HA:
13869 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13872 if ((tls_mask & tls_gd) != 0)
13873 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13874 + R_PPC64_GOT_TPREL16_DS);
13877 rel->r_offset -= d_offset;
13878 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13879 r_type = R_PPC64_NONE;
13881 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13885 case R_PPC64_GOT_TLSGD16:
13886 case R_PPC64_GOT_TLSGD16_LO:
13887 tls_gd = TLS_TPRELGD;
13888 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13892 case R_PPC64_GOT_TLSLD16:
13893 case R_PPC64_GOT_TLSLD16_LO:
13894 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13896 unsigned int insn1, insn2, insn3;
13900 offset = (bfd_vma) -1;
13901 /* If not using the newer R_PPC64_TLSGD/LD to mark
13902 __tls_get_addr calls, we must trust that the call
13903 stays with its arg setup insns, ie. that the next
13904 reloc is the __tls_get_addr call associated with
13905 the current reloc. Edit both insns. */
13906 if (input_section->has_tls_get_addr_call
13907 && rel + 1 < relend
13908 && branch_reloc_hash_match (input_bfd, rel + 1,
13909 htab->tls_get_addr,
13910 htab->tls_get_addr_fd))
13911 offset = rel[1].r_offset;
13912 /* We read the low GOT_TLS (or TOC16) insn because we
13913 need to keep the destination reg. It may be
13914 something other than the usual r3, and moved to r3
13915 before the call by intervening code. */
13916 insn1 = bfd_get_32 (input_bfd,
13917 contents + rel->r_offset - d_offset);
13918 if ((tls_mask & tls_gd) != 0)
13921 insn1 &= (0x1f << 21) | (0x1f << 16);
13922 insn1 |= 58 << 26; /* ld */
13923 insn2 = 0x7c636a14; /* add 3,3,13 */
13924 if (offset != (bfd_vma) -1)
13925 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13926 if ((tls_mask & TLS_EXPLICIT) == 0)
13927 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13928 + R_PPC64_GOT_TPREL16_DS);
13930 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13931 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13936 insn1 &= 0x1f << 21;
13937 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13938 insn2 = 0x38630000; /* addi 3,3,0 */
13941 /* Was an LD reloc. */
13943 sec = local_sections[toc_symndx];
13945 r_symndx < symtab_hdr->sh_info;
13947 if (local_sections[r_symndx] == sec)
13949 if (r_symndx >= symtab_hdr->sh_info)
13950 r_symndx = STN_UNDEF;
13951 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13952 if (r_symndx != STN_UNDEF)
13953 rel->r_addend -= (local_syms[r_symndx].st_value
13954 + sec->output_offset
13955 + sec->output_section->vma);
13957 else if (toc_symndx != 0)
13959 r_symndx = toc_symndx;
13960 rel->r_addend = toc_addend;
13962 r_type = R_PPC64_TPREL16_HA;
13963 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13964 if (offset != (bfd_vma) -1)
13966 rel[1].r_info = ELF64_R_INFO (r_symndx,
13967 R_PPC64_TPREL16_LO);
13968 rel[1].r_offset = offset + d_offset;
13969 rel[1].r_addend = rel->r_addend;
13972 bfd_put_32 (input_bfd, insn1,
13973 contents + rel->r_offset - d_offset);
13974 if (offset != (bfd_vma) -1)
13976 insn3 = bfd_get_32 (input_bfd,
13977 contents + offset + 4);
13979 || insn3 == CROR_151515 || insn3 == CROR_313131)
13981 rel[1].r_offset += 4;
13982 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13985 bfd_put_32 (input_bfd, insn2, contents + offset);
13987 if ((tls_mask & tls_gd) == 0
13988 && (tls_gd == 0 || toc_symndx != 0))
13990 /* We changed the symbol. Start over in order
13991 to get h, sym, sec etc. right. */
13997 case R_PPC64_TLSGD:
13998 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
14000 unsigned int insn2, insn3;
14001 bfd_vma offset = rel->r_offset;
14003 if ((tls_mask & TLS_TPRELGD) != 0)
14006 r_type = R_PPC64_NONE;
14007 insn2 = 0x7c636a14; /* add 3,3,13 */
14012 if (toc_symndx != 0)
14014 r_symndx = toc_symndx;
14015 rel->r_addend = toc_addend;
14017 r_type = R_PPC64_TPREL16_LO;
14018 rel->r_offset = offset + d_offset;
14019 insn2 = 0x38630000; /* addi 3,3,0 */
14021 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14022 /* Zap the reloc on the _tls_get_addr call too. */
14023 BFD_ASSERT (offset == rel[1].r_offset);
14024 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14025 insn3 = bfd_get_32 (input_bfd,
14026 contents + offset + 4);
14028 || insn3 == CROR_151515 || insn3 == CROR_313131)
14030 rel->r_offset += 4;
14031 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14034 bfd_put_32 (input_bfd, insn2, contents + offset);
14035 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
14040 case R_PPC64_TLSLD:
14041 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
14043 unsigned int insn2, insn3;
14044 bfd_vma offset = rel->r_offset;
14047 sec = local_sections[toc_symndx];
14049 r_symndx < symtab_hdr->sh_info;
14051 if (local_sections[r_symndx] == sec)
14053 if (r_symndx >= symtab_hdr->sh_info)
14054 r_symndx = STN_UNDEF;
14055 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14056 if (r_symndx != STN_UNDEF)
14057 rel->r_addend -= (local_syms[r_symndx].st_value
14058 + sec->output_offset
14059 + sec->output_section->vma);
14061 r_type = R_PPC64_TPREL16_LO;
14062 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14063 rel->r_offset = offset + d_offset;
14064 /* Zap the reloc on the _tls_get_addr call too. */
14065 BFD_ASSERT (offset == rel[1].r_offset);
14066 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14067 insn2 = 0x38630000; /* addi 3,3,0 */
14068 insn3 = bfd_get_32 (input_bfd,
14069 contents + offset + 4);
14071 || insn3 == CROR_151515 || insn3 == CROR_313131)
14073 rel->r_offset += 4;
14074 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
14077 bfd_put_32 (input_bfd, insn2, contents + offset);
14082 case R_PPC64_DTPMOD64:
14083 if (rel + 1 < relend
14084 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
14085 && rel[1].r_offset == rel->r_offset + 8)
14087 if ((tls_mask & TLS_GD) == 0)
14089 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
14090 if ((tls_mask & TLS_TPRELGD) != 0)
14091 r_type = R_PPC64_TPREL64;
14094 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14095 r_type = R_PPC64_NONE;
14097 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14102 if ((tls_mask & TLS_LD) == 0)
14104 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14105 r_type = R_PPC64_NONE;
14106 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14111 case R_PPC64_TPREL64:
14112 if ((tls_mask & TLS_TPREL) == 0)
14114 r_type = R_PPC64_NONE;
14115 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14119 case R_PPC64_ENTRY:
14120 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14121 if (!bfd_link_pic (info)
14122 && !info->traditional_format
14123 && relocation + 0x80008000 <= 0xffffffff)
14125 unsigned int insn1, insn2;
14127 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14128 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14129 if ((insn1 & ~0xfffc) == LD_R2_0R12
14130 && insn2 == ADD_R2_R2_R12)
14132 bfd_put_32 (input_bfd,
14133 LIS_R2 + PPC_HA (relocation),
14134 contents + rel->r_offset);
14135 bfd_put_32 (input_bfd,
14136 ADDI_R2_R2 + PPC_LO (relocation),
14137 contents + rel->r_offset + 4);
14142 relocation -= (rel->r_offset
14143 + input_section->output_offset
14144 + input_section->output_section->vma);
14145 if (relocation + 0x80008000 <= 0xffffffff)
14147 unsigned int insn1, insn2;
14149 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14150 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14151 if ((insn1 & ~0xfffc) == LD_R2_0R12
14152 && insn2 == ADD_R2_R2_R12)
14154 bfd_put_32 (input_bfd,
14155 ADDIS_R2_R12 + PPC_HA (relocation),
14156 contents + rel->r_offset);
14157 bfd_put_32 (input_bfd,
14158 ADDI_R2_R2 + PPC_LO (relocation),
14159 contents + rel->r_offset + 4);
14165 case R_PPC64_REL16_HA:
14166 /* If we are generating a non-PIC executable, edit
14167 . 0: addis 2,12,.TOC.-0b@ha
14168 . addi 2,2,.TOC.-0b@l
14169 used by ELFv2 global entry points to set up r2, to
14172 if .TOC. is in range. */
14173 if (!bfd_link_pic (info)
14174 && !info->traditional_format
14176 && rel->r_addend == d_offset
14177 && h != NULL && &h->elf == htab->elf.hgot
14178 && rel + 1 < relend
14179 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14180 && rel[1].r_offset == rel->r_offset + 4
14181 && rel[1].r_addend == rel->r_addend + 4
14182 && relocation + 0x80008000 <= 0xffffffff)
14184 unsigned int insn1, insn2;
14185 bfd_vma offset = rel->r_offset - d_offset;
14186 insn1 = bfd_get_32 (input_bfd, contents + offset);
14187 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14188 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14189 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14191 r_type = R_PPC64_ADDR16_HA;
14192 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14193 rel->r_addend -= d_offset;
14194 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14195 rel[1].r_addend -= d_offset + 4;
14196 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14202 /* Handle other relocations that tweak non-addend part of insn. */
14204 max_br_offset = 1 << 25;
14205 addend = rel->r_addend;
14206 reloc_dest = DEST_NORMAL;
14212 case R_PPC64_TOCSAVE:
14213 if (relocation + addend == (rel->r_offset
14214 + input_section->output_offset
14215 + input_section->output_section->vma)
14216 && tocsave_find (htab, NO_INSERT,
14217 &local_syms, rel, input_bfd))
14219 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14221 || insn == CROR_151515 || insn == CROR_313131)
14222 bfd_put_32 (input_bfd,
14223 STD_R2_0R1 + STK_TOC (htab),
14224 contents + rel->r_offset);
14228 /* Branch taken prediction relocations. */
14229 case R_PPC64_ADDR14_BRTAKEN:
14230 case R_PPC64_REL14_BRTAKEN:
14231 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14232 /* Fall through. */
14234 /* Branch not taken prediction relocations. */
14235 case R_PPC64_ADDR14_BRNTAKEN:
14236 case R_PPC64_REL14_BRNTAKEN:
14237 insn |= bfd_get_32 (input_bfd,
14238 contents + rel->r_offset) & ~(0x01 << 21);
14239 /* Fall through. */
14241 case R_PPC64_REL14:
14242 max_br_offset = 1 << 15;
14243 /* Fall through. */
14245 case R_PPC64_REL24:
14246 /* Calls to functions with a different TOC, such as calls to
14247 shared objects, need to alter the TOC pointer. This is
14248 done using a linkage stub. A REL24 branching to these
14249 linkage stubs needs to be followed by a nop, as the nop
14250 will be replaced with an instruction to restore the TOC
14255 && h->oh->is_func_descriptor)
14256 fdh = ppc_follow_link (h->oh);
14257 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14259 if (stub_entry != NULL
14260 && (stub_entry->stub_type == ppc_stub_plt_call
14261 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14262 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14263 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14265 bfd_boolean can_plt_call = FALSE;
14267 if (stub_entry->stub_type == ppc_stub_plt_call
14269 && htab->params->plt_localentry0 != 0
14270 && is_elfv2_localentry0 (&h->elf))
14272 /* The function doesn't use or change r2. */
14273 can_plt_call = TRUE;
14276 /* All of these stubs may modify r2, so there must be a
14277 branch and link followed by a nop. The nop is
14278 replaced by an insn to restore r2. */
14279 else if (rel->r_offset + 8 <= input_section->size)
14283 br = bfd_get_32 (input_bfd,
14284 contents + rel->r_offset);
14289 nop = bfd_get_32 (input_bfd,
14290 contents + rel->r_offset + 4);
14292 || nop == CROR_151515 || nop == CROR_313131)
14295 && (h == htab->tls_get_addr_fd
14296 || h == htab->tls_get_addr)
14297 && htab->params->tls_get_addr_opt)
14299 /* Special stub used, leave nop alone. */
14302 bfd_put_32 (input_bfd,
14303 LD_R2_0R1 + STK_TOC (htab),
14304 contents + rel->r_offset + 4);
14305 can_plt_call = TRUE;
14310 if (!can_plt_call && h != NULL)
14312 const char *name = h->elf.root.root.string;
14317 if (strncmp (name, "__libc_start_main", 17) == 0
14318 && (name[17] == 0 || name[17] == '@'))
14320 /* Allow crt1 branch to go via a toc adjusting
14321 stub. Other calls that never return could do
14322 the same, if we could detect such. */
14323 can_plt_call = TRUE;
14329 /* g++ as of 20130507 emits self-calls without a
14330 following nop. This is arguably wrong since we
14331 have conflicting information. On the one hand a
14332 global symbol and on the other a local call
14333 sequence, but don't error for this special case.
14334 It isn't possible to cheaply verify we have
14335 exactly such a call. Allow all calls to the same
14337 asection *code_sec = sec;
14339 if (get_opd_info (sec) != NULL)
14341 bfd_vma off = (relocation + addend
14342 - sec->output_section->vma
14343 - sec->output_offset);
14345 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14347 if (code_sec == input_section)
14348 can_plt_call = TRUE;
14353 if (stub_entry->stub_type == ppc_stub_plt_call
14354 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14355 info->callbacks->einfo
14356 /* xgettext:c-format */
14357 (_("%H: call to `%T' lacks nop, can't restore toc; "
14358 "recompile with -fPIC\n"),
14359 input_bfd, input_section, rel->r_offset, sym_name);
14361 info->callbacks->einfo
14362 /* xgettext:c-format */
14363 (_("%H: call to `%T' lacks nop, can't restore toc; "
14364 "(-mcmodel=small toc adjust stub)\n"),
14365 input_bfd, input_section, rel->r_offset, sym_name);
14367 bfd_set_error (bfd_error_bad_value);
14372 && (stub_entry->stub_type == ppc_stub_plt_call
14373 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14374 unresolved_reloc = FALSE;
14377 if ((stub_entry == NULL
14378 || stub_entry->stub_type == ppc_stub_long_branch
14379 || stub_entry->stub_type == ppc_stub_plt_branch)
14380 && get_opd_info (sec) != NULL)
14382 /* The branch destination is the value of the opd entry. */
14383 bfd_vma off = (relocation + addend
14384 - sec->output_section->vma
14385 - sec->output_offset);
14386 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14387 if (dest != (bfd_vma) -1)
14391 reloc_dest = DEST_OPD;
14395 /* If the branch is out of reach we ought to have a long
14397 from = (rel->r_offset
14398 + input_section->output_offset
14399 + input_section->output_section->vma);
14401 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14405 if (stub_entry != NULL
14406 && (stub_entry->stub_type == ppc_stub_long_branch
14407 || stub_entry->stub_type == ppc_stub_plt_branch)
14408 && (r_type == R_PPC64_ADDR14_BRTAKEN
14409 || r_type == R_PPC64_ADDR14_BRNTAKEN
14410 || (relocation + addend - from + max_br_offset
14411 < 2 * max_br_offset)))
14412 /* Don't use the stub if this branch is in range. */
14415 if (stub_entry != NULL)
14417 /* Munge up the value and addend so that we call the stub
14418 rather than the procedure directly. */
14419 asection *stub_sec = stub_entry->group->stub_sec;
14421 if (stub_entry->stub_type == ppc_stub_save_res)
14422 relocation += (stub_sec->output_offset
14423 + stub_sec->output_section->vma
14424 + stub_sec->size - htab->sfpr->size
14425 - htab->sfpr->output_offset
14426 - htab->sfpr->output_section->vma);
14428 relocation = (stub_entry->stub_offset
14429 + stub_sec->output_offset
14430 + stub_sec->output_section->vma);
14432 reloc_dest = DEST_STUB;
14434 if ((stub_entry->stub_type == ppc_stub_plt_call
14435 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14436 && (ALWAYS_EMIT_R2SAVE
14437 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14438 && rel + 1 < relend
14439 && rel[1].r_offset == rel->r_offset + 4
14440 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14448 /* Set 'a' bit. This is 0b00010 in BO field for branch
14449 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14450 for branch on CTR insns (BO == 1a00t or 1a01t). */
14451 if ((insn & (0x14 << 21)) == (0x04 << 21))
14452 insn |= 0x02 << 21;
14453 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14454 insn |= 0x08 << 21;
14460 /* Invert 'y' bit if not the default. */
14461 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14462 insn ^= 0x01 << 21;
14465 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14468 /* NOP out calls to undefined weak functions.
14469 We can thus call a weak function without first
14470 checking whether the function is defined. */
14472 && h->elf.root.type == bfd_link_hash_undefweak
14473 && h->elf.dynindx == -1
14474 && r_type == R_PPC64_REL24
14478 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14484 /* Set `addend'. */
14489 info->callbacks->einfo
14490 /* xgettext:c-format */
14491 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14492 input_bfd, (int) r_type, sym_name);
14494 bfd_set_error (bfd_error_bad_value);
14500 case R_PPC64_TLSGD:
14501 case R_PPC64_TLSLD:
14502 case R_PPC64_TOCSAVE:
14503 case R_PPC64_GNU_VTINHERIT:
14504 case R_PPC64_GNU_VTENTRY:
14505 case R_PPC64_ENTRY:
14508 /* GOT16 relocations. Like an ADDR16 using the symbol's
14509 address in the GOT as relocation value instead of the
14510 symbol's value itself. Also, create a GOT entry for the
14511 symbol and put the symbol value there. */
14512 case R_PPC64_GOT_TLSGD16:
14513 case R_PPC64_GOT_TLSGD16_LO:
14514 case R_PPC64_GOT_TLSGD16_HI:
14515 case R_PPC64_GOT_TLSGD16_HA:
14516 tls_type = TLS_TLS | TLS_GD;
14519 case R_PPC64_GOT_TLSLD16:
14520 case R_PPC64_GOT_TLSLD16_LO:
14521 case R_PPC64_GOT_TLSLD16_HI:
14522 case R_PPC64_GOT_TLSLD16_HA:
14523 tls_type = TLS_TLS | TLS_LD;
14526 case R_PPC64_GOT_TPREL16_DS:
14527 case R_PPC64_GOT_TPREL16_LO_DS:
14528 case R_PPC64_GOT_TPREL16_HI:
14529 case R_PPC64_GOT_TPREL16_HA:
14530 tls_type = TLS_TLS | TLS_TPREL;
14533 case R_PPC64_GOT_DTPREL16_DS:
14534 case R_PPC64_GOT_DTPREL16_LO_DS:
14535 case R_PPC64_GOT_DTPREL16_HI:
14536 case R_PPC64_GOT_DTPREL16_HA:
14537 tls_type = TLS_TLS | TLS_DTPREL;
14540 case R_PPC64_GOT16:
14541 case R_PPC64_GOT16_LO:
14542 case R_PPC64_GOT16_HI:
14543 case R_PPC64_GOT16_HA:
14544 case R_PPC64_GOT16_DS:
14545 case R_PPC64_GOT16_LO_DS:
14548 /* Relocation is to the entry for this symbol in the global
14553 unsigned long indx = 0;
14554 struct got_entry *ent;
14556 if (tls_type == (TLS_TLS | TLS_LD)
14558 || !h->elf.def_dynamic))
14559 ent = ppc64_tlsld_got (input_bfd);
14564 if (!htab->elf.dynamic_sections_created
14565 || h->elf.dynindx == -1
14566 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14567 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14568 /* This is actually a static link, or it is a
14569 -Bsymbolic link and the symbol is defined
14570 locally, or the symbol was forced to be local
14571 because of a version file. */
14575 indx = h->elf.dynindx;
14576 unresolved_reloc = FALSE;
14578 ent = h->elf.got.glist;
14582 if (local_got_ents == NULL)
14584 ent = local_got_ents[r_symndx];
14587 for (; ent != NULL; ent = ent->next)
14588 if (ent->addend == orig_rel.r_addend
14589 && ent->owner == input_bfd
14590 && ent->tls_type == tls_type)
14596 if (ent->is_indirect)
14597 ent = ent->got.ent;
14598 offp = &ent->got.offset;
14599 got = ppc64_elf_tdata (ent->owner)->got;
14603 /* The offset must always be a multiple of 8. We use the
14604 least significant bit to record whether we have already
14605 processed this entry. */
14607 if ((off & 1) != 0)
14611 /* Generate relocs for the dynamic linker, except in
14612 the case of TLSLD where we'll use one entry per
14620 ? h->elf.type == STT_GNU_IFUNC
14621 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14624 relgot = htab->elf.irelplt;
14626 htab->local_ifunc_resolver = 1;
14627 else if (is_static_defined (&h->elf))
14628 htab->maybe_local_ifunc_resolver = 1;
14631 || (bfd_link_pic (info)
14633 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14634 || (tls_type == (TLS_TLS | TLS_LD)
14635 && !h->elf.def_dynamic))))
14636 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14637 if (relgot != NULL)
14639 outrel.r_offset = (got->output_section->vma
14640 + got->output_offset
14642 outrel.r_addend = addend;
14643 if (tls_type & (TLS_LD | TLS_GD))
14645 outrel.r_addend = 0;
14646 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14647 if (tls_type == (TLS_TLS | TLS_GD))
14649 loc = relgot->contents;
14650 loc += (relgot->reloc_count++
14651 * sizeof (Elf64_External_Rela));
14652 bfd_elf64_swap_reloca_out (output_bfd,
14654 outrel.r_offset += 8;
14655 outrel.r_addend = addend;
14657 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14660 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14661 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14662 else if (tls_type == (TLS_TLS | TLS_TPREL))
14663 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14664 else if (indx != 0)
14665 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14669 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14671 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14673 /* Write the .got section contents for the sake
14675 loc = got->contents + off;
14676 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14680 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14682 outrel.r_addend += relocation;
14683 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14685 if (htab->elf.tls_sec == NULL)
14686 outrel.r_addend = 0;
14688 outrel.r_addend -= htab->elf.tls_sec->vma;
14691 loc = relgot->contents;
14692 loc += (relgot->reloc_count++
14693 * sizeof (Elf64_External_Rela));
14694 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14697 /* Init the .got section contents here if we're not
14698 emitting a reloc. */
14701 relocation += addend;
14704 if (htab->elf.tls_sec == NULL)
14708 if (tls_type & TLS_LD)
14711 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14712 if (tls_type & TLS_TPREL)
14713 relocation += DTP_OFFSET - TP_OFFSET;
14716 if (tls_type & (TLS_GD | TLS_LD))
14718 bfd_put_64 (output_bfd, relocation,
14719 got->contents + off + 8);
14723 bfd_put_64 (output_bfd, relocation,
14724 got->contents + off);
14728 if (off >= (bfd_vma) -2)
14731 relocation = got->output_section->vma + got->output_offset + off;
14732 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14736 case R_PPC64_PLT16_HA:
14737 case R_PPC64_PLT16_HI:
14738 case R_PPC64_PLT16_LO:
14739 case R_PPC64_PLT32:
14740 case R_PPC64_PLT64:
14741 /* Relocation is to the entry for this symbol in the
14742 procedure linkage table. */
14744 struct plt_entry **plt_list = NULL;
14746 plt_list = &h->elf.plt.plist;
14747 else if (local_got_ents != NULL)
14749 struct plt_entry **local_plt = (struct plt_entry **)
14750 (local_got_ents + symtab_hdr->sh_info);
14751 unsigned char *local_got_tls_masks = (unsigned char *)
14752 (local_plt + symtab_hdr->sh_info);
14753 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14754 plt_list = local_plt + r_symndx;
14758 struct plt_entry *ent;
14760 for (ent = *plt_list; ent != NULL; ent = ent->next)
14761 if (ent->plt.offset != (bfd_vma) -1
14762 && ent->addend == orig_rel.r_addend)
14766 plt = htab->elf.splt;
14767 if (!htab->elf.dynamic_sections_created
14769 || h->elf.dynindx == -1)
14770 plt = htab->elf.iplt;
14771 relocation = (plt->output_section->vma
14772 + plt->output_offset
14773 + ent->plt.offset);
14775 unresolved_reloc = FALSE;
14783 /* Relocation value is TOC base. */
14784 relocation = TOCstart;
14785 if (r_symndx == STN_UNDEF)
14786 relocation += htab->sec_info[input_section->id].toc_off;
14787 else if (unresolved_reloc)
14789 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14790 relocation += htab->sec_info[sec->id].toc_off;
14792 unresolved_reloc = TRUE;
14795 /* TOC16 relocs. We want the offset relative to the TOC base,
14796 which is the address of the start of the TOC plus 0x8000.
14797 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14799 case R_PPC64_TOC16:
14800 case R_PPC64_TOC16_LO:
14801 case R_PPC64_TOC16_HI:
14802 case R_PPC64_TOC16_DS:
14803 case R_PPC64_TOC16_LO_DS:
14804 case R_PPC64_TOC16_HA:
14805 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14808 /* Relocate against the beginning of the section. */
14809 case R_PPC64_SECTOFF:
14810 case R_PPC64_SECTOFF_LO:
14811 case R_PPC64_SECTOFF_HI:
14812 case R_PPC64_SECTOFF_DS:
14813 case R_PPC64_SECTOFF_LO_DS:
14814 case R_PPC64_SECTOFF_HA:
14816 addend -= sec->output_section->vma;
14819 case R_PPC64_REL16:
14820 case R_PPC64_REL16_LO:
14821 case R_PPC64_REL16_HI:
14822 case R_PPC64_REL16_HA:
14823 case R_PPC64_REL16DX_HA:
14826 case R_PPC64_REL14:
14827 case R_PPC64_REL14_BRNTAKEN:
14828 case R_PPC64_REL14_BRTAKEN:
14829 case R_PPC64_REL24:
14832 case R_PPC64_TPREL16:
14833 case R_PPC64_TPREL16_LO:
14834 case R_PPC64_TPREL16_HI:
14835 case R_PPC64_TPREL16_HA:
14836 case R_PPC64_TPREL16_DS:
14837 case R_PPC64_TPREL16_LO_DS:
14838 case R_PPC64_TPREL16_HIGH:
14839 case R_PPC64_TPREL16_HIGHA:
14840 case R_PPC64_TPREL16_HIGHER:
14841 case R_PPC64_TPREL16_HIGHERA:
14842 case R_PPC64_TPREL16_HIGHEST:
14843 case R_PPC64_TPREL16_HIGHESTA:
14845 && h->elf.root.type == bfd_link_hash_undefweak
14846 && h->elf.dynindx == -1)
14848 /* Make this relocation against an undefined weak symbol
14849 resolve to zero. This is really just a tweak, since
14850 code using weak externs ought to check that they are
14851 defined before using them. */
14852 bfd_byte *p = contents + rel->r_offset - d_offset;
14854 insn = bfd_get_32 (input_bfd, p);
14855 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14857 bfd_put_32 (input_bfd, insn, p);
14860 if (htab->elf.tls_sec != NULL)
14861 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14862 if (bfd_link_pic (info))
14863 /* The TPREL16 relocs shouldn't really be used in shared
14864 libs as they will result in DT_TEXTREL being set, but
14865 support them anyway. */
14869 case R_PPC64_DTPREL16:
14870 case R_PPC64_DTPREL16_LO:
14871 case R_PPC64_DTPREL16_HI:
14872 case R_PPC64_DTPREL16_HA:
14873 case R_PPC64_DTPREL16_DS:
14874 case R_PPC64_DTPREL16_LO_DS:
14875 case R_PPC64_DTPREL16_HIGH:
14876 case R_PPC64_DTPREL16_HIGHA:
14877 case R_PPC64_DTPREL16_HIGHER:
14878 case R_PPC64_DTPREL16_HIGHERA:
14879 case R_PPC64_DTPREL16_HIGHEST:
14880 case R_PPC64_DTPREL16_HIGHESTA:
14881 if (htab->elf.tls_sec != NULL)
14882 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14885 case R_PPC64_ADDR64_LOCAL:
14886 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14891 case R_PPC64_DTPMOD64:
14896 case R_PPC64_TPREL64:
14897 if (htab->elf.tls_sec != NULL)
14898 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14901 case R_PPC64_DTPREL64:
14902 if (htab->elf.tls_sec != NULL)
14903 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14904 /* Fall through. */
14906 /* Relocations that may need to be propagated if this is a
14908 case R_PPC64_REL30:
14909 case R_PPC64_REL32:
14910 case R_PPC64_REL64:
14911 case R_PPC64_ADDR14:
14912 case R_PPC64_ADDR14_BRNTAKEN:
14913 case R_PPC64_ADDR14_BRTAKEN:
14914 case R_PPC64_ADDR16:
14915 case R_PPC64_ADDR16_DS:
14916 case R_PPC64_ADDR16_HA:
14917 case R_PPC64_ADDR16_HI:
14918 case R_PPC64_ADDR16_HIGH:
14919 case R_PPC64_ADDR16_HIGHA:
14920 case R_PPC64_ADDR16_HIGHER:
14921 case R_PPC64_ADDR16_HIGHERA:
14922 case R_PPC64_ADDR16_HIGHEST:
14923 case R_PPC64_ADDR16_HIGHESTA:
14924 case R_PPC64_ADDR16_LO:
14925 case R_PPC64_ADDR16_LO_DS:
14926 case R_PPC64_ADDR24:
14927 case R_PPC64_ADDR32:
14928 case R_PPC64_ADDR64:
14929 case R_PPC64_UADDR16:
14930 case R_PPC64_UADDR32:
14931 case R_PPC64_UADDR64:
14933 if ((input_section->flags & SEC_ALLOC) == 0)
14936 if (NO_OPD_RELOCS && is_opd)
14939 if (bfd_link_pic (info)
14941 || h->dyn_relocs != NULL)
14942 && ((h != NULL && pc_dynrelocs (h))
14943 || must_be_dyn_reloc (info, r_type)))
14945 ? h->dyn_relocs != NULL
14946 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14948 bfd_boolean skip, relocate;
14953 /* When generating a dynamic object, these relocations
14954 are copied into the output file to be resolved at run
14960 out_off = _bfd_elf_section_offset (output_bfd, info,
14961 input_section, rel->r_offset);
14962 if (out_off == (bfd_vma) -1)
14964 else if (out_off == (bfd_vma) -2)
14965 skip = TRUE, relocate = TRUE;
14966 out_off += (input_section->output_section->vma
14967 + input_section->output_offset);
14968 outrel.r_offset = out_off;
14969 outrel.r_addend = rel->r_addend;
14971 /* Optimize unaligned reloc use. */
14972 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14973 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14974 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14975 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14976 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14977 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14978 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14979 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14980 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14983 memset (&outrel, 0, sizeof outrel);
14984 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14986 && r_type != R_PPC64_TOC)
14988 indx = h->elf.dynindx;
14989 BFD_ASSERT (indx != -1);
14990 outrel.r_info = ELF64_R_INFO (indx, r_type);
14994 /* This symbol is local, or marked to become local,
14995 or this is an opd section reloc which must point
14996 at a local function. */
14997 outrel.r_addend += relocation;
14998 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
15000 if (is_opd && h != NULL)
15002 /* Lie about opd entries. This case occurs
15003 when building shared libraries and we
15004 reference a function in another shared
15005 lib. The same thing happens for a weak
15006 definition in an application that's
15007 overridden by a strong definition in a
15008 shared lib. (I believe this is a generic
15009 bug in binutils handling of weak syms.)
15010 In these cases we won't use the opd
15011 entry in this lib. */
15012 unresolved_reloc = FALSE;
15015 && r_type == R_PPC64_ADDR64
15017 ? h->elf.type == STT_GNU_IFUNC
15018 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
15019 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15022 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
15024 /* We need to relocate .opd contents for ld.so.
15025 Prelink also wants simple and consistent rules
15026 for relocs. This make all RELATIVE relocs have
15027 *r_offset equal to r_addend. */
15034 ? h->elf.type == STT_GNU_IFUNC
15035 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15037 info->callbacks->einfo
15038 /* xgettext:c-format */
15039 (_("%H: %s for indirect "
15040 "function `%T' unsupported\n"),
15041 input_bfd, input_section, rel->r_offset,
15042 ppc64_elf_howto_table[r_type]->name,
15046 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
15048 else if (sec == NULL || sec->owner == NULL)
15050 bfd_set_error (bfd_error_bad_value);
15057 osec = sec->output_section;
15058 indx = elf_section_data (osec)->dynindx;
15062 if ((osec->flags & SEC_READONLY) == 0
15063 && htab->elf.data_index_section != NULL)
15064 osec = htab->elf.data_index_section;
15066 osec = htab->elf.text_index_section;
15067 indx = elf_section_data (osec)->dynindx;
15069 BFD_ASSERT (indx != 0);
15071 /* We are turning this relocation into one
15072 against a section symbol, so subtract out
15073 the output section's address but not the
15074 offset of the input section in the output
15076 outrel.r_addend -= osec->vma;
15079 outrel.r_info = ELF64_R_INFO (indx, r_type);
15083 sreloc = elf_section_data (input_section)->sreloc;
15085 ? h->elf.type == STT_GNU_IFUNC
15086 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15088 sreloc = htab->elf.irelplt;
15090 htab->local_ifunc_resolver = 1;
15091 else if (is_static_defined (&h->elf))
15092 htab->maybe_local_ifunc_resolver = 1;
15094 if (sreloc == NULL)
15097 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
15100 loc = sreloc->contents;
15101 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
15102 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15104 /* If this reloc is against an external symbol, it will
15105 be computed at runtime, so there's no need to do
15106 anything now. However, for the sake of prelink ensure
15107 that the section contents are a known value. */
15110 unresolved_reloc = FALSE;
15111 /* The value chosen here is quite arbitrary as ld.so
15112 ignores section contents except for the special
15113 case of .opd where the contents might be accessed
15114 before relocation. Choose zero, as that won't
15115 cause reloc overflow. */
15118 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15119 to improve backward compatibility with older
15121 if (r_type == R_PPC64_ADDR64)
15122 addend = outrel.r_addend;
15123 /* Adjust pc_relative relocs to have zero in *r_offset. */
15124 else if (ppc64_elf_howto_table[r_type]->pc_relative)
15125 addend = outrel.r_offset;
15131 case R_PPC64_GLOB_DAT:
15132 case R_PPC64_JMP_SLOT:
15133 case R_PPC64_JMP_IREL:
15134 case R_PPC64_RELATIVE:
15135 /* We shouldn't ever see these dynamic relocs in relocatable
15137 /* Fall through. */
15139 case R_PPC64_PLTGOT16:
15140 case R_PPC64_PLTGOT16_DS:
15141 case R_PPC64_PLTGOT16_HA:
15142 case R_PPC64_PLTGOT16_HI:
15143 case R_PPC64_PLTGOT16_LO:
15144 case R_PPC64_PLTGOT16_LO_DS:
15145 case R_PPC64_PLTREL32:
15146 case R_PPC64_PLTREL64:
15147 /* These ones haven't been implemented yet. */
15149 info->callbacks->einfo
15150 /* xgettext:c-format */
15151 (_("%P: %B: %s is not supported for `%T'\n"),
15153 ppc64_elf_howto_table[r_type]->name, sym_name);
15155 bfd_set_error (bfd_error_invalid_operation);
15160 /* Multi-instruction sequences that access the TOC can be
15161 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15162 to nop; addi rb,r2,x; */
15168 case R_PPC64_GOT_TLSLD16_HI:
15169 case R_PPC64_GOT_TLSGD16_HI:
15170 case R_PPC64_GOT_TPREL16_HI:
15171 case R_PPC64_GOT_DTPREL16_HI:
15172 case R_PPC64_GOT16_HI:
15173 case R_PPC64_TOC16_HI:
15174 /* These relocs would only be useful if building up an
15175 offset to later add to r2, perhaps in an indexed
15176 addressing mode instruction. Don't try to optimize.
15177 Unfortunately, the possibility of someone building up an
15178 offset like this or even with the HA relocs, means that
15179 we need to check the high insn when optimizing the low
15183 case R_PPC64_GOT_TLSLD16_HA:
15184 case R_PPC64_GOT_TLSGD16_HA:
15185 case R_PPC64_GOT_TPREL16_HA:
15186 case R_PPC64_GOT_DTPREL16_HA:
15187 case R_PPC64_GOT16_HA:
15188 case R_PPC64_TOC16_HA:
15189 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15190 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15192 bfd_byte *p = contents + (rel->r_offset & ~3);
15193 bfd_put_32 (input_bfd, NOP, p);
15197 case R_PPC64_GOT_TLSLD16_LO:
15198 case R_PPC64_GOT_TLSGD16_LO:
15199 case R_PPC64_GOT_TPREL16_LO_DS:
15200 case R_PPC64_GOT_DTPREL16_LO_DS:
15201 case R_PPC64_GOT16_LO:
15202 case R_PPC64_GOT16_LO_DS:
15203 case R_PPC64_TOC16_LO:
15204 case R_PPC64_TOC16_LO_DS:
15205 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15206 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15208 bfd_byte *p = contents + (rel->r_offset & ~3);
15209 insn = bfd_get_32 (input_bfd, p);
15210 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15212 /* Transform addic to addi when we change reg. */
15213 insn &= ~((0x3f << 26) | (0x1f << 16));
15214 insn |= (14u << 26) | (2 << 16);
15218 insn &= ~(0x1f << 16);
15221 bfd_put_32 (input_bfd, insn, p);
15226 /* Do any further special processing. */
15227 howto = ppc64_elf_howto_table[(int) r_type];
15233 case R_PPC64_REL16_HA:
15234 case R_PPC64_REL16DX_HA:
15235 case R_PPC64_ADDR16_HA:
15236 case R_PPC64_ADDR16_HIGHA:
15237 case R_PPC64_ADDR16_HIGHERA:
15238 case R_PPC64_ADDR16_HIGHESTA:
15239 case R_PPC64_TOC16_HA:
15240 case R_PPC64_SECTOFF_HA:
15241 case R_PPC64_TPREL16_HA:
15242 case R_PPC64_TPREL16_HIGHA:
15243 case R_PPC64_TPREL16_HIGHERA:
15244 case R_PPC64_TPREL16_HIGHESTA:
15245 case R_PPC64_DTPREL16_HA:
15246 case R_PPC64_DTPREL16_HIGHA:
15247 case R_PPC64_DTPREL16_HIGHERA:
15248 case R_PPC64_DTPREL16_HIGHESTA:
15249 /* It's just possible that this symbol is a weak symbol
15250 that's not actually defined anywhere. In that case,
15251 'sec' would be NULL, and we should leave the symbol
15252 alone (it will be set to zero elsewhere in the link). */
15255 /* Fall through. */
15257 case R_PPC64_GOT16_HA:
15258 case R_PPC64_PLTGOT16_HA:
15259 case R_PPC64_PLT16_HA:
15260 case R_PPC64_GOT_TLSGD16_HA:
15261 case R_PPC64_GOT_TLSLD16_HA:
15262 case R_PPC64_GOT_TPREL16_HA:
15263 case R_PPC64_GOT_DTPREL16_HA:
15264 /* Add 0x10000 if sign bit in 0:15 is set.
15265 Bits 0:15 are not used. */
15269 case R_PPC64_ADDR16_DS:
15270 case R_PPC64_ADDR16_LO_DS:
15271 case R_PPC64_GOT16_DS:
15272 case R_PPC64_GOT16_LO_DS:
15273 case R_PPC64_PLT16_LO_DS:
15274 case R_PPC64_SECTOFF_DS:
15275 case R_PPC64_SECTOFF_LO_DS:
15276 case R_PPC64_TOC16_DS:
15277 case R_PPC64_TOC16_LO_DS:
15278 case R_PPC64_PLTGOT16_DS:
15279 case R_PPC64_PLTGOT16_LO_DS:
15280 case R_PPC64_GOT_TPREL16_DS:
15281 case R_PPC64_GOT_TPREL16_LO_DS:
15282 case R_PPC64_GOT_DTPREL16_DS:
15283 case R_PPC64_GOT_DTPREL16_LO_DS:
15284 case R_PPC64_TPREL16_DS:
15285 case R_PPC64_TPREL16_LO_DS:
15286 case R_PPC64_DTPREL16_DS:
15287 case R_PPC64_DTPREL16_LO_DS:
15288 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15290 /* If this reloc is against an lq, lxv, or stxv insn, then
15291 the value must be a multiple of 16. This is somewhat of
15292 a hack, but the "correct" way to do this by defining _DQ
15293 forms of all the _DS relocs bloats all reloc switches in
15294 this file. It doesn't make much sense to use these
15295 relocs in data, so testing the insn should be safe. */
15296 if ((insn & (0x3f << 26)) == (56u << 26)
15297 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15299 relocation += addend;
15300 addend = insn & (mask ^ 3);
15301 if ((relocation & mask) != 0)
15303 relocation ^= relocation & mask;
15304 info->callbacks->einfo
15305 /* xgettext:c-format */
15306 (_("%H: error: %s not a multiple of %u\n"),
15307 input_bfd, input_section, rel->r_offset,
15310 bfd_set_error (bfd_error_bad_value);
15317 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15318 because such sections are not SEC_ALLOC and thus ld.so will
15319 not process them. */
15320 if (unresolved_reloc
15321 && !((input_section->flags & SEC_DEBUGGING) != 0
15322 && h->elf.def_dynamic)
15323 && _bfd_elf_section_offset (output_bfd, info, input_section,
15324 rel->r_offset) != (bfd_vma) -1)
15326 info->callbacks->einfo
15327 /* xgettext:c-format */
15328 (_("%H: unresolvable %s against `%T'\n"),
15329 input_bfd, input_section, rel->r_offset,
15331 h->elf.root.root.string);
15335 /* 16-bit fields in insns mostly have signed values, but a
15336 few insns have 16-bit unsigned values. Really, we should
15337 have different reloc types. */
15338 if (howto->complain_on_overflow != complain_overflow_dont
15339 && howto->dst_mask == 0xffff
15340 && (input_section->flags & SEC_CODE) != 0)
15342 enum complain_overflow complain = complain_overflow_signed;
15344 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15345 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15346 complain = complain_overflow_bitfield;
15347 else if (howto->rightshift == 0
15348 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15349 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15350 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15351 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15352 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15353 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15354 complain = complain_overflow_unsigned;
15355 if (howto->complain_on_overflow != complain)
15357 alt_howto = *howto;
15358 alt_howto.complain_on_overflow = complain;
15359 howto = &alt_howto;
15363 if (r_type == R_PPC64_REL16DX_HA)
15365 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15366 if (rel->r_offset + 4 > input_section->size)
15367 r = bfd_reloc_outofrange;
15370 relocation += addend;
15371 relocation -= (rel->r_offset
15372 + input_section->output_offset
15373 + input_section->output_section->vma);
15374 relocation = (bfd_signed_vma) relocation >> 16;
15375 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15377 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15378 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15380 if (relocation + 0x8000 > 0xffff)
15381 r = bfd_reloc_overflow;
15385 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15386 rel->r_offset, relocation, addend);
15388 if (r != bfd_reloc_ok)
15390 char *more_info = NULL;
15391 const char *reloc_name = howto->name;
15393 if (reloc_dest != DEST_NORMAL)
15395 more_info = bfd_malloc (strlen (reloc_name) + 8);
15396 if (more_info != NULL)
15398 strcpy (more_info, reloc_name);
15399 strcat (more_info, (reloc_dest == DEST_OPD
15400 ? " (OPD)" : " (stub)"));
15401 reloc_name = more_info;
15405 if (r == bfd_reloc_overflow)
15407 /* On code like "if (foo) foo();" don't report overflow
15408 on a branch to zero when foo is undefined. */
15410 && (reloc_dest == DEST_STUB
15412 && (h->elf.root.type == bfd_link_hash_undefweak
15413 || h->elf.root.type == bfd_link_hash_undefined)
15414 && is_branch_reloc (r_type))))
15415 info->callbacks->reloc_overflow (info, &h->elf.root,
15416 sym_name, reloc_name,
15418 input_bfd, input_section,
15423 info->callbacks->einfo
15424 /* xgettext:c-format */
15425 (_("%H: %s against `%T': error %d\n"),
15426 input_bfd, input_section, rel->r_offset,
15427 reloc_name, sym_name, (int) r);
15430 if (more_info != NULL)
15440 Elf_Internal_Shdr *rel_hdr;
15441 size_t deleted = rel - wrel;
15443 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15444 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15445 if (rel_hdr->sh_size == 0)
15447 /* It is too late to remove an empty reloc section. Leave
15449 ??? What is wrong with an empty section??? */
15450 rel_hdr->sh_size = rel_hdr->sh_entsize;
15453 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15454 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15455 input_section->reloc_count -= deleted;
15458 /* If we're emitting relocations, then shortly after this function
15459 returns, reloc offsets and addends for this section will be
15460 adjusted. Worse, reloc symbol indices will be for the output
15461 file rather than the input. Save a copy of the relocs for
15462 opd_entry_value. */
15463 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15466 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15467 rel = bfd_alloc (input_bfd, amt);
15468 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15469 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15472 memcpy (rel, relocs, amt);
15477 /* Adjust the value of any local symbols in opd sections. */
15480 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15481 const char *name ATTRIBUTE_UNUSED,
15482 Elf_Internal_Sym *elfsym,
15483 asection *input_sec,
15484 struct elf_link_hash_entry *h)
15486 struct _opd_sec_data *opd;
15493 opd = get_opd_info (input_sec);
15494 if (opd == NULL || opd->adjust == NULL)
15497 value = elfsym->st_value - input_sec->output_offset;
15498 if (!bfd_link_relocatable (info))
15499 value -= input_sec->output_section->vma;
15501 adjust = opd->adjust[OPD_NDX (value)];
15505 elfsym->st_value += adjust;
15509 /* Finish up dynamic symbol handling. We set the contents of various
15510 dynamic sections here. */
15513 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15514 struct bfd_link_info *info,
15515 struct elf_link_hash_entry *h,
15516 Elf_Internal_Sym *sym)
15518 struct ppc_link_hash_table *htab;
15519 struct plt_entry *ent;
15520 Elf_Internal_Rela rela;
15523 htab = ppc_hash_table (info);
15527 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15528 if (ent->plt.offset != (bfd_vma) -1)
15530 /* This symbol has an entry in the procedure linkage
15531 table. Set it up. */
15532 if (!htab->elf.dynamic_sections_created
15533 || h->dynindx == -1)
15535 BFD_ASSERT (h->type == STT_GNU_IFUNC
15537 && (h->root.type == bfd_link_hash_defined
15538 || h->root.type == bfd_link_hash_defweak));
15539 rela.r_offset = (htab->elf.iplt->output_section->vma
15540 + htab->elf.iplt->output_offset
15541 + ent->plt.offset);
15543 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15545 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15546 rela.r_addend = (h->root.u.def.value
15547 + h->root.u.def.section->output_offset
15548 + h->root.u.def.section->output_section->vma
15550 loc = (htab->elf.irelplt->contents
15551 + (htab->elf.irelplt->reloc_count++
15552 * sizeof (Elf64_External_Rela)));
15553 htab->local_ifunc_resolver = 1;
15557 rela.r_offset = (htab->elf.splt->output_section->vma
15558 + htab->elf.splt->output_offset
15559 + ent->plt.offset);
15560 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15561 rela.r_addend = ent->addend;
15562 loc = (htab->elf.srelplt->contents
15563 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15564 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15565 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15566 htab->maybe_local_ifunc_resolver = 1;
15568 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15570 if (!htab->opd_abi)
15572 if (!h->def_regular)
15574 /* Mark the symbol as undefined, rather than as
15575 defined in glink. Leave the value if there were
15576 any relocations where pointer equality matters
15577 (this is a clue for the dynamic linker, to make
15578 function pointer comparisons work between an
15579 application and shared library), otherwise set it
15581 sym->st_shndx = SHN_UNDEF;
15582 if (!h->pointer_equality_needed)
15584 else if (!h->ref_regular_nonweak)
15586 /* This breaks function pointer comparisons, but
15587 that is better than breaking tests for a NULL
15588 function pointer. */
15597 /* This symbol needs a copy reloc. Set it up. */
15600 if (h->dynindx == -1
15601 || (h->root.type != bfd_link_hash_defined
15602 && h->root.type != bfd_link_hash_defweak)
15603 || htab->elf.srelbss == NULL
15604 || htab->elf.sreldynrelro == NULL)
15607 rela.r_offset = (h->root.u.def.value
15608 + h->root.u.def.section->output_section->vma
15609 + h->root.u.def.section->output_offset);
15610 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15612 if (h->root.u.def.section == htab->elf.sdynrelro)
15613 srel = htab->elf.sreldynrelro;
15615 srel = htab->elf.srelbss;
15616 loc = srel->contents;
15617 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15618 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15624 /* Used to decide how to sort relocs in an optimal manner for the
15625 dynamic linker, before writing them out. */
15627 static enum elf_reloc_type_class
15628 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15629 const asection *rel_sec,
15630 const Elf_Internal_Rela *rela)
15632 enum elf_ppc64_reloc_type r_type;
15633 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15635 if (rel_sec == htab->elf.irelplt)
15636 return reloc_class_ifunc;
15638 r_type = ELF64_R_TYPE (rela->r_info);
15641 case R_PPC64_RELATIVE:
15642 return reloc_class_relative;
15643 case R_PPC64_JMP_SLOT:
15644 return reloc_class_plt;
15646 return reloc_class_copy;
15648 return reloc_class_normal;
15652 /* Finish up the dynamic sections. */
15655 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15656 struct bfd_link_info *info)
15658 struct ppc_link_hash_table *htab;
15662 htab = ppc_hash_table (info);
15666 dynobj = htab->elf.dynobj;
15667 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15669 if (htab->elf.dynamic_sections_created)
15671 Elf64_External_Dyn *dyncon, *dynconend;
15673 if (sdyn == NULL || htab->elf.sgot == NULL)
15676 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15677 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15678 for (; dyncon < dynconend; dyncon++)
15680 Elf_Internal_Dyn dyn;
15683 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15690 case DT_PPC64_GLINK:
15692 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15693 /* We stupidly defined DT_PPC64_GLINK to be the start
15694 of glink rather than the first entry point, which is
15695 what ld.so needs, and now have a bigger stub to
15696 support automatic multiple TOCs. */
15697 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15701 s = bfd_get_section_by_name (output_bfd, ".opd");
15704 dyn.d_un.d_ptr = s->vma;
15708 if (htab->do_multi_toc && htab->multi_toc_needed)
15709 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15710 if (htab->has_plt_localentry0)
15711 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15714 case DT_PPC64_OPDSZ:
15715 s = bfd_get_section_by_name (output_bfd, ".opd");
15718 dyn.d_un.d_val = s->size;
15722 s = htab->elf.splt;
15723 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15727 s = htab->elf.srelplt;
15728 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15732 dyn.d_un.d_val = htab->elf.srelplt->size;
15736 if (htab->local_ifunc_resolver)
15737 info->callbacks->einfo
15738 (_("%X%P: text relocations and GNU indirect "
15739 "functions will result in a segfault at runtime\n"));
15740 else if (htab->maybe_local_ifunc_resolver)
15741 info->callbacks->einfo
15742 (_("%P: warning: text relocations and GNU indirect "
15743 "functions may result in a segfault at runtime\n"));
15747 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15751 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15752 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15754 /* Fill in the first entry in the global offset table.
15755 We use it to hold the link-time TOCbase. */
15756 bfd_put_64 (output_bfd,
15757 elf_gp (output_bfd) + TOC_BASE_OFF,
15758 htab->elf.sgot->contents);
15760 /* Set .got entry size. */
15761 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15764 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15765 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15767 /* Set .plt entry size. */
15768 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15769 = PLT_ENTRY_SIZE (htab);
15772 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15773 brlt ourselves if emitrelocations. */
15774 if (htab->brlt != NULL
15775 && htab->brlt->reloc_count != 0
15776 && !_bfd_elf_link_output_relocs (output_bfd,
15778 elf_section_data (htab->brlt)->rela.hdr,
15779 elf_section_data (htab->brlt)->relocs,
15783 if (htab->glink != NULL
15784 && htab->glink->reloc_count != 0
15785 && !_bfd_elf_link_output_relocs (output_bfd,
15787 elf_section_data (htab->glink)->rela.hdr,
15788 elf_section_data (htab->glink)->relocs,
15792 if (htab->glink_eh_frame != NULL
15793 && htab->glink_eh_frame->size != 0)
15797 struct map_stub *group;
15800 p = htab->glink_eh_frame->contents;
15801 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15803 for (group = htab->group; group != NULL; group = group->next)
15804 if (group->stub_sec != NULL)
15806 /* Offset to stub section. */
15807 val = (group->stub_sec->output_section->vma
15808 + group->stub_sec->output_offset);
15809 val -= (htab->glink_eh_frame->output_section->vma
15810 + htab->glink_eh_frame->output_offset
15811 + (p + 8 - htab->glink_eh_frame->contents));
15812 if (val + 0x80000000 > 0xffffffff)
15814 info->callbacks->einfo
15815 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15816 group->stub_sec->name);
15819 bfd_put_32 (dynobj, val, p + 8);
15820 p += stub_eh_frame_size (group, align);
15822 if (htab->glink != NULL && htab->glink->size != 0)
15824 /* Offset to .glink. */
15825 val = (htab->glink->output_section->vma
15826 + htab->glink->output_offset
15828 val -= (htab->glink_eh_frame->output_section->vma
15829 + htab->glink_eh_frame->output_offset
15830 + (p + 8 - htab->glink_eh_frame->contents));
15831 if (val + 0x80000000 > 0xffffffff)
15833 info->callbacks->einfo
15834 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15835 htab->glink->name);
15838 bfd_put_32 (dynobj, val, p + 8);
15839 p += (24 + align - 1) & -align;
15842 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15843 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15844 htab->glink_eh_frame,
15845 htab->glink_eh_frame->contents))
15849 /* We need to handle writing out multiple GOT sections ourselves,
15850 since we didn't add them to DYNOBJ. We know dynobj is the first
15852 while ((dynobj = dynobj->link.next) != NULL)
15856 if (!is_ppc64_elf (dynobj))
15859 s = ppc64_elf_tdata (dynobj)->got;
15862 && s->output_section != bfd_abs_section_ptr
15863 && !bfd_set_section_contents (output_bfd, s->output_section,
15864 s->contents, s->output_offset,
15867 s = ppc64_elf_tdata (dynobj)->relgot;
15870 && s->output_section != bfd_abs_section_ptr
15871 && !bfd_set_section_contents (output_bfd, s->output_section,
15872 s->contents, s->output_offset,
15880 #include "elf64-target.h"
15882 /* FreeBSD support */
15884 #undef TARGET_LITTLE_SYM
15885 #undef TARGET_LITTLE_NAME
15887 #undef TARGET_BIG_SYM
15888 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15889 #undef TARGET_BIG_NAME
15890 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15893 #define ELF_OSABI ELFOSABI_FREEBSD
15896 #define elf64_bed elf64_powerpc_fbsd_bed
15898 #include "elf64-target.h"