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)
3281 symcount = static_count;
3283 symcount += dyn_count;
3287 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3291 if (!relocatable && static_count != 0 && dyn_count != 0)
3293 /* Use both symbol tables. */
3294 memcpy (syms, static_syms, static_count * sizeof (*syms));
3295 memcpy (syms + static_count, dyn_syms,
3296 (dyn_count + 1) * sizeof (*syms));
3298 else if (!relocatable && static_count == 0)
3299 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3301 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3303 synthetic_relocatable = relocatable;
3304 synthetic_opd = opd;
3305 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3307 if (!relocatable && symcount > 1)
3310 /* Trim duplicate syms, since we may have merged the normal and
3311 dynamic symbols. Actually, we only care about syms that have
3312 different values, so trim any with the same value. */
3313 for (i = 1, j = 1; i < symcount; ++i)
3314 if (syms[i - 1]->value + syms[i - 1]->section->vma
3315 != syms[i]->value + syms[i]->section->vma)
3316 syms[j++] = syms[i];
3321 /* Note that here and in compare_symbols we can't compare opd and
3322 sym->section directly. With separate debug info files, the
3323 symbols will be extracted from the debug file while abfd passed
3324 to this function is the real binary. */
3325 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3329 for (; i < symcount; ++i)
3330 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC
3331 | SEC_THREAD_LOCAL))
3332 != (SEC_CODE | SEC_ALLOC))
3333 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3337 for (; i < symcount; ++i)
3338 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3342 for (; i < symcount; ++i)
3343 if (strcmp (syms[i]->section->name, ".opd") != 0)
3347 for (; i < symcount; ++i)
3348 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3349 != (SEC_CODE | SEC_ALLOC))
3357 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3362 if (opdsymend == secsymend)
3365 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3366 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3370 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3377 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3381 while (r < opd->relocation + relcount
3382 && r->address < syms[i]->value + opd->vma)
3385 if (r == opd->relocation + relcount)
3388 if (r->address != syms[i]->value + opd->vma)
3391 if (r->howto->type != R_PPC64_ADDR64)
3394 sym = *r->sym_ptr_ptr;
3395 if (!sym_exists_at (syms, opdsymend, symcount,
3396 sym->section->id, sym->value + r->addend))
3399 size += sizeof (asymbol);
3400 size += strlen (syms[i]->name) + 2;
3406 s = *ret = bfd_malloc (size);
3413 names = (char *) (s + count);
3415 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3419 while (r < opd->relocation + relcount
3420 && r->address < syms[i]->value + opd->vma)
3423 if (r == opd->relocation + relcount)
3426 if (r->address != syms[i]->value + opd->vma)
3429 if (r->howto->type != R_PPC64_ADDR64)
3432 sym = *r->sym_ptr_ptr;
3433 if (!sym_exists_at (syms, opdsymend, symcount,
3434 sym->section->id, sym->value + r->addend))
3439 s->flags |= BSF_SYNTHETIC;
3440 s->section = sym->section;
3441 s->value = sym->value + r->addend;
3444 len = strlen (syms[i]->name);
3445 memcpy (names, syms[i]->name, len + 1);
3447 /* Have udata.p point back to the original symbol this
3448 synthetic symbol was derived from. */
3449 s->udata.p = syms[i];
3456 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3457 bfd_byte *contents = NULL;
3460 bfd_vma glink_vma = 0, resolv_vma = 0;
3461 asection *dynamic, *glink = NULL, *relplt = NULL;
3464 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3466 free_contents_and_exit_err:
3468 free_contents_and_exit:
3475 for (i = secsymend; i < opdsymend; ++i)
3479 /* Ignore bogus symbols. */
3480 if (syms[i]->value > opd->size - 8)
3483 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3484 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3487 size += sizeof (asymbol);
3488 size += strlen (syms[i]->name) + 2;
3492 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3494 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3496 bfd_byte *dynbuf, *extdyn, *extdynend;
3498 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3500 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3501 goto free_contents_and_exit_err;
3503 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3504 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3507 extdynend = extdyn + dynamic->size;
3508 for (; extdyn < extdynend; extdyn += extdynsize)
3510 Elf_Internal_Dyn dyn;
3511 (*swap_dyn_in) (abfd, extdyn, &dyn);
3513 if (dyn.d_tag == DT_NULL)
3516 if (dyn.d_tag == DT_PPC64_GLINK)
3518 /* The first glink stub starts at offset 32; see
3519 comment in ppc64_elf_finish_dynamic_sections. */
3520 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3521 /* The .glink section usually does not survive the final
3522 link; search for the section (usually .text) where the
3523 glink stubs now reside. */
3524 glink = bfd_sections_find_if (abfd, section_covers_vma,
3535 /* Determine __glink trampoline by reading the relative branch
3536 from the first glink stub. */
3538 unsigned int off = 0;
3540 while (bfd_get_section_contents (abfd, glink, buf,
3541 glink_vma + off - glink->vma, 4))
3543 unsigned int insn = bfd_get_32 (abfd, buf);
3545 if ((insn & ~0x3fffffc) == 0)
3547 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3556 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3558 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3561 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3562 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3563 goto free_contents_and_exit_err;
3565 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3566 size += plt_count * sizeof (asymbol);
3568 p = relplt->relocation;
3569 for (i = 0; i < plt_count; i++, p++)
3571 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3573 size += sizeof ("+0x") - 1 + 16;
3579 goto free_contents_and_exit;
3580 s = *ret = bfd_malloc (size);
3582 goto free_contents_and_exit_err;
3584 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3586 for (i = secsymend; i < opdsymend; ++i)
3590 if (syms[i]->value > opd->size - 8)
3593 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3594 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3598 asection *sec = abfd->sections;
3605 long mid = (lo + hi) >> 1;
3606 if (syms[mid]->section->vma < ent)
3608 else if (syms[mid]->section->vma > ent)
3612 sec = syms[mid]->section;
3617 if (lo >= hi && lo > codesecsym)
3618 sec = syms[lo - 1]->section;
3620 for (; sec != NULL; sec = sec->next)
3624 /* SEC_LOAD may not be set if SEC is from a separate debug
3626 if ((sec->flags & SEC_ALLOC) == 0)
3628 if ((sec->flags & SEC_CODE) != 0)
3631 s->flags |= BSF_SYNTHETIC;
3632 s->value = ent - s->section->vma;
3635 len = strlen (syms[i]->name);
3636 memcpy (names, syms[i]->name, len + 1);
3638 /* Have udata.p point back to the original symbol this
3639 synthetic symbol was derived from. */
3640 s->udata.p = syms[i];
3646 if (glink != NULL && relplt != NULL)
3650 /* Add a symbol for the main glink trampoline. */
3651 memset (s, 0, sizeof *s);
3653 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3655 s->value = resolv_vma - glink->vma;
3657 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3658 names += sizeof ("__glink_PLTresolve");
3663 /* FIXME: It would be very much nicer to put sym@plt on the
3664 stub rather than on the glink branch table entry. The
3665 objdump disassembler would then use a sensible symbol
3666 name on plt calls. The difficulty in doing so is
3667 a) finding the stubs, and,
3668 b) matching stubs against plt entries, and,
3669 c) there can be multiple stubs for a given plt entry.
3671 Solving (a) could be done by code scanning, but older
3672 ppc64 binaries used different stubs to current code.
3673 (b) is the tricky one since you need to known the toc
3674 pointer for at least one function that uses a pic stub to
3675 be able to calculate the plt address referenced.
3676 (c) means gdb would need to set multiple breakpoints (or
3677 find the glink branch itself) when setting breakpoints
3678 for pending shared library loads. */
3679 p = relplt->relocation;
3680 for (i = 0; i < plt_count; i++, p++)
3684 *s = **p->sym_ptr_ptr;
3685 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3686 we are defining a symbol, ensure one of them is set. */
3687 if ((s->flags & BSF_LOCAL) == 0)
3688 s->flags |= BSF_GLOBAL;
3689 s->flags |= BSF_SYNTHETIC;
3691 s->value = glink_vma - glink->vma;
3694 len = strlen ((*p->sym_ptr_ptr)->name);
3695 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3699 memcpy (names, "+0x", sizeof ("+0x") - 1);
3700 names += sizeof ("+0x") - 1;
3701 bfd_sprintf_vma (abfd, names, p->addend);
3702 names += strlen (names);
3704 memcpy (names, "@plt", sizeof ("@plt"));
3705 names += sizeof ("@plt");
3725 /* The following functions are specific to the ELF linker, while
3726 functions above are used generally. Those named ppc64_elf_* are
3727 called by the main ELF linker code. They appear in this file more
3728 or less in the order in which they are called. eg.
3729 ppc64_elf_check_relocs is called early in the link process,
3730 ppc64_elf_finish_dynamic_sections is one of the last functions
3733 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3734 functions have both a function code symbol and a function descriptor
3735 symbol. A call to foo in a relocatable object file looks like:
3742 The function definition in another object file might be:
3746 . .quad .TOC.@tocbase
3752 When the linker resolves the call during a static link, the branch
3753 unsurprisingly just goes to .foo and the .opd information is unused.
3754 If the function definition is in a shared library, things are a little
3755 different: The call goes via a plt call stub, the opd information gets
3756 copied to the plt, and the linker patches the nop.
3764 . std 2,40(1) # in practice, the call stub
3765 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3766 . addi 11,11,Lfoo@toc@l # this is the general idea
3774 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3776 The "reloc ()" notation is supposed to indicate that the linker emits
3777 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3780 What are the difficulties here? Well, firstly, the relocations
3781 examined by the linker in check_relocs are against the function code
3782 sym .foo, while the dynamic relocation in the plt is emitted against
3783 the function descriptor symbol, foo. Somewhere along the line, we need
3784 to carefully copy dynamic link information from one symbol to the other.
3785 Secondly, the generic part of the elf linker will make .foo a dynamic
3786 symbol as is normal for most other backends. We need foo dynamic
3787 instead, at least for an application final link. However, when
3788 creating a shared library containing foo, we need to have both symbols
3789 dynamic so that references to .foo are satisfied during the early
3790 stages of linking. Otherwise the linker might decide to pull in a
3791 definition from some other object, eg. a static library.
3793 Update: As of August 2004, we support a new convention. Function
3794 calls may use the function descriptor symbol, ie. "bl foo". This
3795 behaves exactly as "bl .foo". */
3797 /* Of those relocs that might be copied as dynamic relocs, this
3798 function selects those that must be copied when linking a shared
3799 library or PIE, even when the symbol is local. */
3802 must_be_dyn_reloc (struct bfd_link_info *info,
3803 enum elf_ppc64_reloc_type r_type)
3808 /* Only relative relocs can be resolved when the object load
3809 address isn't fixed. DTPREL64 is excluded because the
3810 dynamic linker needs to differentiate global dynamic from
3811 local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */
3819 case R_PPC64_TPREL16:
3820 case R_PPC64_TPREL16_LO:
3821 case R_PPC64_TPREL16_HI:
3822 case R_PPC64_TPREL16_HA:
3823 case R_PPC64_TPREL16_DS:
3824 case R_PPC64_TPREL16_LO_DS:
3825 case R_PPC64_TPREL16_HIGH:
3826 case R_PPC64_TPREL16_HIGHA:
3827 case R_PPC64_TPREL16_HIGHER:
3828 case R_PPC64_TPREL16_HIGHERA:
3829 case R_PPC64_TPREL16_HIGHEST:
3830 case R_PPC64_TPREL16_HIGHESTA:
3831 case R_PPC64_TPREL64:
3832 /* These relocations are relative but in a shared library the
3833 linker doesn't know the thread pointer base. */
3834 return bfd_link_dll (info);
3838 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3839 copying dynamic variables from a shared lib into an app's dynbss
3840 section, and instead use a dynamic relocation to point into the
3841 shared lib. With code that gcc generates, it's vital that this be
3842 enabled; In the PowerPC64 ABI, the address of a function is actually
3843 the address of a function descriptor, which resides in the .opd
3844 section. gcc uses the descriptor directly rather than going via the
3845 GOT as some other ABI's do, which means that initialized function
3846 pointers must reference the descriptor. Thus, a function pointer
3847 initialized to the address of a function in a shared library will
3848 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3849 redefines the function descriptor symbol to point to the copy. This
3850 presents a problem as a plt entry for that function is also
3851 initialized from the function descriptor symbol and the copy reloc
3852 may not be initialized first. */
3853 #define ELIMINATE_COPY_RELOCS 1
3855 /* Section name for stubs is the associated section name plus this
3857 #define STUB_SUFFIX ".stub"
3860 ppc_stub_long_branch:
3861 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3862 destination, but a 24 bit branch in a stub section will reach.
3865 ppc_stub_plt_branch:
3866 Similar to the above, but a 24 bit branch in the stub section won't
3867 reach its destination.
3868 . addis %r11,%r2,xxx@toc@ha
3869 . ld %r12,xxx@toc@l(%r11)
3874 Used to call a function in a shared library. If it so happens that
3875 the plt entry referenced crosses a 64k boundary, then an extra
3876 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3878 . addis %r11,%r2,xxx@toc@ha
3879 . ld %r12,xxx+0@toc@l(%r11)
3881 . ld %r2,xxx+8@toc@l(%r11)
3882 . ld %r11,xxx+16@toc@l(%r11)
3885 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3886 code to adjust the value and save r2 to support multiple toc sections.
3887 A ppc_stub_long_branch with an r2 offset looks like:
3889 . addis %r2,%r2,off@ha
3890 . addi %r2,%r2,off@l
3893 A ppc_stub_plt_branch with an r2 offset looks like:
3895 . addis %r11,%r2,xxx@toc@ha
3896 . ld %r12,xxx@toc@l(%r11)
3897 . addis %r2,%r2,off@ha
3898 . addi %r2,%r2,off@l
3902 In cases where the "addis" instruction would add zero, the "addis" is
3903 omitted and following instructions modified slightly in some cases.
3906 enum ppc_stub_type {
3908 ppc_stub_long_branch,
3909 ppc_stub_long_branch_r2off,
3910 ppc_stub_plt_branch,
3911 ppc_stub_plt_branch_r2off,
3913 ppc_stub_plt_call_r2save,
3914 ppc_stub_global_entry,
3918 /* Information on stub grouping. */
3921 /* The stub section. */
3923 /* This is the section to which stubs in the group will be attached. */
3926 struct map_stub *next;
3927 /* Whether to emit a copy of register save/restore functions in this
3930 /* The offset of the __tls_get_addr_opt plt stub bctrl in this group,
3931 or -1u if no such stub with bctrl exists. */
3932 unsigned int tls_get_addr_opt_bctrl;
3935 struct ppc_stub_hash_entry {
3937 /* Base hash table entry structure. */
3938 struct bfd_hash_entry root;
3940 enum ppc_stub_type stub_type;
3942 /* Group information. */
3943 struct map_stub *group;
3945 /* Offset within stub_sec of the beginning of this stub. */
3946 bfd_vma stub_offset;
3948 /* Given the symbol's value and its section we can determine its final
3949 value when building the stubs (so the stub knows where to jump. */
3950 bfd_vma target_value;
3951 asection *target_section;
3953 /* The symbol table entry, if any, that this was derived from. */
3954 struct ppc_link_hash_entry *h;
3955 struct plt_entry *plt_ent;
3957 /* Symbol st_other. */
3958 unsigned char other;
3961 struct ppc_branch_hash_entry {
3963 /* Base hash table entry structure. */
3964 struct bfd_hash_entry root;
3966 /* Offset within branch lookup table. */
3967 unsigned int offset;
3969 /* Generation marker. */
3973 /* Used to track dynamic relocations for local symbols. */
3974 struct ppc_dyn_relocs
3976 struct ppc_dyn_relocs *next;
3978 /* The input section of the reloc. */
3981 /* Total number of relocs copied for the input section. */
3982 unsigned int count : 31;
3984 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3985 unsigned int ifunc : 1;
3988 struct ppc_link_hash_entry
3990 struct elf_link_hash_entry elf;
3993 /* A pointer to the most recently used stub hash entry against this
3995 struct ppc_stub_hash_entry *stub_cache;
3997 /* A pointer to the next symbol starting with a '.' */
3998 struct ppc_link_hash_entry *next_dot_sym;
4001 /* Track dynamic relocs copied for this symbol. */
4002 struct elf_dyn_relocs *dyn_relocs;
4004 /* Chain of aliases referring to a weakdef. */
4005 struct ppc_link_hash_entry *weakref;
4007 /* Link between function code and descriptor symbols. */
4008 struct ppc_link_hash_entry *oh;
4010 /* Flag function code and descriptor symbols. */
4011 unsigned int is_func:1;
4012 unsigned int is_func_descriptor:1;
4013 unsigned int fake:1;
4015 /* Whether global opd/toc sym has been adjusted or not.
4016 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
4017 should be set for all globals defined in any opd/toc section. */
4018 unsigned int adjust_done:1;
4020 /* Set if this is an out-of-line register save/restore function,
4021 with non-standard calling convention. */
4022 unsigned int save_res:1;
4024 /* Set if a duplicate symbol with non-zero localentry is detected,
4025 even when the duplicate symbol does not provide a definition. */
4026 unsigned int non_zero_localentry:1;
4028 /* Contexts in which symbol is used in the GOT (or TOC).
4029 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
4030 corresponding relocs are encountered during check_relocs.
4031 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
4032 indicate the corresponding GOT entry type is not needed.
4033 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
4034 a TPREL one. We use a separate flag rather than setting TPREL
4035 just for convenience in distinguishing the two cases. */
4036 #define TLS_GD 1 /* GD reloc. */
4037 #define TLS_LD 2 /* LD reloc. */
4038 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
4039 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4040 #define TLS_TLS 16 /* Any TLS reloc. */
4041 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4042 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4043 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4044 unsigned char tls_mask;
4047 /* ppc64 ELF linker hash table. */
4049 struct ppc_link_hash_table
4051 struct elf_link_hash_table elf;
4053 /* The stub hash table. */
4054 struct bfd_hash_table stub_hash_table;
4056 /* Another hash table for plt_branch stubs. */
4057 struct bfd_hash_table branch_hash_table;
4059 /* Hash table for function prologue tocsave. */
4060 htab_t tocsave_htab;
4062 /* Various options and other info passed from the linker. */
4063 struct ppc64_elf_params *params;
4065 /* The size of sec_info below. */
4066 unsigned int sec_info_arr_size;
4068 /* Per-section array of extra section info. Done this way rather
4069 than as part of ppc64_elf_section_data so we have the info for
4070 non-ppc64 sections. */
4073 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4078 /* The section group that this section belongs to. */
4079 struct map_stub *group;
4080 /* A temp section list pointer. */
4085 /* Linked list of groups. */
4086 struct map_stub *group;
4088 /* Temp used when calculating TOC pointers. */
4091 asection *toc_first_sec;
4093 /* Used when adding symbols. */
4094 struct ppc_link_hash_entry *dot_syms;
4096 /* Shortcuts to get to dynamic linker sections. */
4101 asection *glink_eh_frame;
4103 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4104 struct ppc_link_hash_entry *tls_get_addr;
4105 struct ppc_link_hash_entry *tls_get_addr_fd;
4107 /* The size of reliplt used by got entry relocs. */
4108 bfd_size_type got_reli_size;
4111 unsigned long stub_count[ppc_stub_global_entry];
4113 /* Number of stubs against global syms. */
4114 unsigned long stub_globals;
4116 /* Set if we're linking code with function descriptors. */
4117 unsigned int opd_abi:1;
4119 /* Support for multiple toc sections. */
4120 unsigned int do_multi_toc:1;
4121 unsigned int multi_toc_needed:1;
4122 unsigned int second_toc_pass:1;
4123 unsigned int do_toc_opt:1;
4125 /* Set if tls optimization is enabled. */
4126 unsigned int do_tls_opt:1;
4129 unsigned int stub_error:1;
4131 /* Whether func_desc_adjust needs to be run over symbols. */
4132 unsigned int need_func_desc_adj:1;
4134 /* Whether there exist local gnu indirect function resolvers,
4135 referenced by dynamic relocations. */
4136 unsigned int local_ifunc_resolver:1;
4137 unsigned int maybe_local_ifunc_resolver:1;
4139 /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */
4140 unsigned int has_plt_localentry0:1;
4142 /* Incremented every time we size stubs. */
4143 unsigned int stub_iteration;
4145 /* Small local sym cache. */
4146 struct sym_cache sym_cache;
4149 /* Rename some of the generic section flags to better document how they
4152 /* Nonzero if this section has TLS related relocations. */
4153 #define has_tls_reloc sec_flg0
4155 /* Nonzero if this section has a call to __tls_get_addr. */
4156 #define has_tls_get_addr_call sec_flg1
4158 /* Nonzero if this section has any toc or got relocs. */
4159 #define has_toc_reloc sec_flg2
4161 /* Nonzero if this section has a call to another section that uses
4163 #define makes_toc_func_call sec_flg3
4165 /* Recursion protection when determining above flag. */
4166 #define call_check_in_progress sec_flg4
4167 #define call_check_done sec_flg5
4169 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4171 #define ppc_hash_table(p) \
4172 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4173 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4175 #define ppc_stub_hash_lookup(table, string, create, copy) \
4176 ((struct ppc_stub_hash_entry *) \
4177 bfd_hash_lookup ((table), (string), (create), (copy)))
4179 #define ppc_branch_hash_lookup(table, string, create, copy) \
4180 ((struct ppc_branch_hash_entry *) \
4181 bfd_hash_lookup ((table), (string), (create), (copy)))
4183 /* Create an entry in the stub hash table. */
4185 static struct bfd_hash_entry *
4186 stub_hash_newfunc (struct bfd_hash_entry *entry,
4187 struct bfd_hash_table *table,
4190 /* Allocate the structure if it has not already been allocated by a
4194 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4199 /* Call the allocation method of the superclass. */
4200 entry = bfd_hash_newfunc (entry, table, string);
4203 struct ppc_stub_hash_entry *eh;
4205 /* Initialize the local fields. */
4206 eh = (struct ppc_stub_hash_entry *) entry;
4207 eh->stub_type = ppc_stub_none;
4209 eh->stub_offset = 0;
4210 eh->target_value = 0;
4211 eh->target_section = NULL;
4220 /* Create an entry in the branch hash table. */
4222 static struct bfd_hash_entry *
4223 branch_hash_newfunc (struct bfd_hash_entry *entry,
4224 struct bfd_hash_table *table,
4227 /* Allocate the structure if it has not already been allocated by a
4231 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4236 /* Call the allocation method of the superclass. */
4237 entry = bfd_hash_newfunc (entry, table, string);
4240 struct ppc_branch_hash_entry *eh;
4242 /* Initialize the local fields. */
4243 eh = (struct ppc_branch_hash_entry *) entry;
4251 /* Create an entry in a ppc64 ELF linker hash table. */
4253 static struct bfd_hash_entry *
4254 link_hash_newfunc (struct bfd_hash_entry *entry,
4255 struct bfd_hash_table *table,
4258 /* Allocate the structure if it has not already been allocated by a
4262 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4267 /* Call the allocation method of the superclass. */
4268 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4271 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4273 memset (&eh->u.stub_cache, 0,
4274 (sizeof (struct ppc_link_hash_entry)
4275 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4277 /* When making function calls, old ABI code references function entry
4278 points (dot symbols), while new ABI code references the function
4279 descriptor symbol. We need to make any combination of reference and
4280 definition work together, without breaking archive linking.
4282 For a defined function "foo" and an undefined call to "bar":
4283 An old object defines "foo" and ".foo", references ".bar" (possibly
4285 A new object defines "foo" and references "bar".
4287 A new object thus has no problem with its undefined symbols being
4288 satisfied by definitions in an old object. On the other hand, the
4289 old object won't have ".bar" satisfied by a new object.
4291 Keep a list of newly added dot-symbols. */
4293 if (string[0] == '.')
4295 struct ppc_link_hash_table *htab;
4297 htab = (struct ppc_link_hash_table *) table;
4298 eh->u.next_dot_sym = htab->dot_syms;
4299 htab->dot_syms = eh;
4306 struct tocsave_entry {
4312 tocsave_htab_hash (const void *p)
4314 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4315 return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3;
4319 tocsave_htab_eq (const void *p1, const void *p2)
4321 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4322 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4323 return e1->sec == e2->sec && e1->offset == e2->offset;
4326 /* Destroy a ppc64 ELF linker hash table. */
4329 ppc64_elf_link_hash_table_free (bfd *obfd)
4331 struct ppc_link_hash_table *htab;
4333 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4334 if (htab->tocsave_htab)
4335 htab_delete (htab->tocsave_htab);
4336 bfd_hash_table_free (&htab->branch_hash_table);
4337 bfd_hash_table_free (&htab->stub_hash_table);
4338 _bfd_elf_link_hash_table_free (obfd);
4341 /* Create a ppc64 ELF linker hash table. */
4343 static struct bfd_link_hash_table *
4344 ppc64_elf_link_hash_table_create (bfd *abfd)
4346 struct ppc_link_hash_table *htab;
4347 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4349 htab = bfd_zmalloc (amt);
4353 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4354 sizeof (struct ppc_link_hash_entry),
4361 /* Init the stub hash table too. */
4362 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4363 sizeof (struct ppc_stub_hash_entry)))
4365 _bfd_elf_link_hash_table_free (abfd);
4369 /* And the branch hash table. */
4370 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4371 sizeof (struct ppc_branch_hash_entry)))
4373 bfd_hash_table_free (&htab->stub_hash_table);
4374 _bfd_elf_link_hash_table_free (abfd);
4378 htab->tocsave_htab = htab_try_create (1024,
4382 if (htab->tocsave_htab == NULL)
4384 ppc64_elf_link_hash_table_free (abfd);
4387 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4389 /* Initializing two fields of the union is just cosmetic. We really
4390 only care about glist, but when compiled on a 32-bit host the
4391 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4392 debugger inspection of these fields look nicer. */
4393 htab->elf.init_got_refcount.refcount = 0;
4394 htab->elf.init_got_refcount.glist = NULL;
4395 htab->elf.init_plt_refcount.refcount = 0;
4396 htab->elf.init_plt_refcount.glist = NULL;
4397 htab->elf.init_got_offset.offset = 0;
4398 htab->elf.init_got_offset.glist = NULL;
4399 htab->elf.init_plt_offset.offset = 0;
4400 htab->elf.init_plt_offset.glist = NULL;
4402 return &htab->elf.root;
4405 /* Create sections for linker generated code. */
4408 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4410 struct ppc_link_hash_table *htab;
4413 htab = ppc_hash_table (info);
4415 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4416 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4417 if (htab->params->save_restore_funcs)
4419 /* Create .sfpr for code to save and restore fp regs. */
4420 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4422 if (htab->sfpr == NULL
4423 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4427 if (bfd_link_relocatable (info))
4430 /* Create .glink for lazy dynamic linking support. */
4431 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4433 if (htab->glink == NULL
4434 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4437 if (!info->no_ld_generated_unwind_info)
4439 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4440 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4441 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4444 if (htab->glink_eh_frame == NULL
4445 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4449 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4450 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4451 if (htab->elf.iplt == NULL
4452 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4455 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4456 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4458 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4459 if (htab->elf.irelplt == NULL
4460 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4463 /* Create branch lookup table for plt_branch stubs. */
4464 flags = (SEC_ALLOC | SEC_LOAD
4465 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4466 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4468 if (htab->brlt == NULL
4469 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4472 if (!bfd_link_pic (info))
4475 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4476 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4477 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4480 if (htab->relbrlt == NULL
4481 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4487 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4490 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4491 struct ppc64_elf_params *params)
4493 struct ppc_link_hash_table *htab;
4495 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4497 /* Always hook our dynamic sections into the first bfd, which is the
4498 linker created stub bfd. This ensures that the GOT header is at
4499 the start of the output TOC section. */
4500 htab = ppc_hash_table (info);
4501 htab->elf.dynobj = params->stub_bfd;
4502 htab->params = params;
4504 return create_linkage_sections (htab->elf.dynobj, info);
4507 /* Build a name for an entry in the stub hash table. */
4510 ppc_stub_name (const asection *input_section,
4511 const asection *sym_sec,
4512 const struct ppc_link_hash_entry *h,
4513 const Elf_Internal_Rela *rel)
4518 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4519 offsets from a sym as a branch target? In fact, we could
4520 probably assume the addend is always zero. */
4521 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4525 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4526 stub_name = bfd_malloc (len);
4527 if (stub_name == NULL)
4530 len = sprintf (stub_name, "%08x.%s+%x",
4531 input_section->id & 0xffffffff,
4532 h->elf.root.root.string,
4533 (int) rel->r_addend & 0xffffffff);
4537 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4538 stub_name = bfd_malloc (len);
4539 if (stub_name == NULL)
4542 len = sprintf (stub_name, "%08x.%x:%x+%x",
4543 input_section->id & 0xffffffff,
4544 sym_sec->id & 0xffffffff,
4545 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4546 (int) rel->r_addend & 0xffffffff);
4548 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4549 stub_name[len - 2] = 0;
4553 /* Look up an entry in the stub hash. Stub entries are cached because
4554 creating the stub name takes a bit of time. */
4556 static struct ppc_stub_hash_entry *
4557 ppc_get_stub_entry (const asection *input_section,
4558 const asection *sym_sec,
4559 struct ppc_link_hash_entry *h,
4560 const Elf_Internal_Rela *rel,
4561 struct ppc_link_hash_table *htab)
4563 struct ppc_stub_hash_entry *stub_entry;
4564 struct map_stub *group;
4566 /* If this input section is part of a group of sections sharing one
4567 stub section, then use the id of the first section in the group.
4568 Stub names need to include a section id, as there may well be
4569 more than one stub used to reach say, printf, and we need to
4570 distinguish between them. */
4571 group = htab->sec_info[input_section->id].u.group;
4575 if (h != NULL && h->u.stub_cache != NULL
4576 && h->u.stub_cache->h == h
4577 && h->u.stub_cache->group == group)
4579 stub_entry = h->u.stub_cache;
4585 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4586 if (stub_name == NULL)
4589 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4590 stub_name, FALSE, FALSE);
4592 h->u.stub_cache = stub_entry;
4600 /* Add a new stub entry to the stub hash. Not all fields of the new
4601 stub entry are initialised. */
4603 static struct ppc_stub_hash_entry *
4604 ppc_add_stub (const char *stub_name,
4606 struct bfd_link_info *info)
4608 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4609 struct map_stub *group;
4612 struct ppc_stub_hash_entry *stub_entry;
4614 group = htab->sec_info[section->id].u.group;
4615 link_sec = group->link_sec;
4616 stub_sec = group->stub_sec;
4617 if (stub_sec == NULL)
4623 namelen = strlen (link_sec->name);
4624 len = namelen + sizeof (STUB_SUFFIX);
4625 s_name = bfd_alloc (htab->params->stub_bfd, len);
4629 memcpy (s_name, link_sec->name, namelen);
4630 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4631 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4632 if (stub_sec == NULL)
4634 group->stub_sec = stub_sec;
4637 /* Enter this entry into the linker stub hash table. */
4638 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4640 if (stub_entry == NULL)
4642 /* xgettext:c-format */
4643 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4644 section->owner, stub_name);
4648 stub_entry->group = group;
4649 stub_entry->stub_offset = 0;
4653 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4654 not already done. */
4657 create_got_section (bfd *abfd, struct bfd_link_info *info)
4659 asection *got, *relgot;
4661 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4663 if (!is_ppc64_elf (abfd))
4669 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4672 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4673 | SEC_LINKER_CREATED);
4675 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4677 || !bfd_set_section_alignment (abfd, got, 3))
4680 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4681 flags | SEC_READONLY);
4683 || ! bfd_set_section_alignment (abfd, relgot, 3))
4686 ppc64_elf_tdata (abfd)->got = got;
4687 ppc64_elf_tdata (abfd)->relgot = relgot;
4691 /* Follow indirect and warning symbol links. */
4693 static inline struct bfd_link_hash_entry *
4694 follow_link (struct bfd_link_hash_entry *h)
4696 while (h->type == bfd_link_hash_indirect
4697 || h->type == bfd_link_hash_warning)
4702 static inline struct elf_link_hash_entry *
4703 elf_follow_link (struct elf_link_hash_entry *h)
4705 return (struct elf_link_hash_entry *) follow_link (&h->root);
4708 static inline struct ppc_link_hash_entry *
4709 ppc_follow_link (struct ppc_link_hash_entry *h)
4711 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4714 /* Merge PLT info on FROM with that on TO. */
4717 move_plt_plist (struct ppc_link_hash_entry *from,
4718 struct ppc_link_hash_entry *to)
4720 if (from->elf.plt.plist != NULL)
4722 if (to->elf.plt.plist != NULL)
4724 struct plt_entry **entp;
4725 struct plt_entry *ent;
4727 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4729 struct plt_entry *dent;
4731 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4732 if (dent->addend == ent->addend)
4734 dent->plt.refcount += ent->plt.refcount;
4741 *entp = to->elf.plt.plist;
4744 to->elf.plt.plist = from->elf.plt.plist;
4745 from->elf.plt.plist = NULL;
4749 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4752 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4753 struct elf_link_hash_entry *dir,
4754 struct elf_link_hash_entry *ind)
4756 struct ppc_link_hash_entry *edir, *eind;
4758 edir = (struct ppc_link_hash_entry *) dir;
4759 eind = (struct ppc_link_hash_entry *) ind;
4761 edir->is_func |= eind->is_func;
4762 edir->is_func_descriptor |= eind->is_func_descriptor;
4763 edir->tls_mask |= eind->tls_mask;
4764 if (eind->oh != NULL)
4765 edir->oh = ppc_follow_link (eind->oh);
4767 /* If called to transfer flags for a weakdef during processing
4768 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4769 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4770 if (!(ELIMINATE_COPY_RELOCS
4771 && eind->elf.root.type != bfd_link_hash_indirect
4772 && edir->elf.dynamic_adjusted))
4773 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4775 if (edir->elf.versioned != versioned_hidden)
4776 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4777 edir->elf.ref_regular |= eind->elf.ref_regular;
4778 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4779 edir->elf.needs_plt |= eind->elf.needs_plt;
4780 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4782 /* If we were called to copy over info for a weak sym, don't copy
4783 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4784 in order to simplify readonly_dynrelocs and save a field in the
4785 symbol hash entry, but that means dyn_relocs can't be used in any
4786 tests about a specific symbol, or affect other symbol flags which
4788 Chain weakdefs so we can get from the weakdef back to an alias.
4789 The list is circular so that we don't need to use u.weakdef as
4790 well as this list to look at all aliases. */
4791 if (eind->elf.root.type != bfd_link_hash_indirect)
4793 struct ppc_link_hash_entry *cur, *add, *next;
4798 cur = edir->weakref;
4803 /* We can be called twice for the same symbols.
4804 Don't make multiple loops. */
4808 } while (cur != edir);
4810 next = add->weakref;
4813 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4814 edir->weakref = add;
4817 } while (add != NULL && add != eind);
4821 /* Copy over any dynamic relocs we may have on the indirect sym. */
4822 if (eind->dyn_relocs != NULL)
4824 if (edir->dyn_relocs != NULL)
4826 struct elf_dyn_relocs **pp;
4827 struct elf_dyn_relocs *p;
4829 /* Add reloc counts against the indirect sym to the direct sym
4830 list. Merge any entries against the same section. */
4831 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4833 struct elf_dyn_relocs *q;
4835 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4836 if (q->sec == p->sec)
4838 q->pc_count += p->pc_count;
4839 q->count += p->count;
4846 *pp = edir->dyn_relocs;
4849 edir->dyn_relocs = eind->dyn_relocs;
4850 eind->dyn_relocs = NULL;
4853 /* Copy over got entries that we may have already seen to the
4854 symbol which just became indirect. */
4855 if (eind->elf.got.glist != NULL)
4857 if (edir->elf.got.glist != NULL)
4859 struct got_entry **entp;
4860 struct got_entry *ent;
4862 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4864 struct got_entry *dent;
4866 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4867 if (dent->addend == ent->addend
4868 && dent->owner == ent->owner
4869 && dent->tls_type == ent->tls_type)
4871 dent->got.refcount += ent->got.refcount;
4878 *entp = edir->elf.got.glist;
4881 edir->elf.got.glist = eind->elf.got.glist;
4882 eind->elf.got.glist = NULL;
4885 /* And plt entries. */
4886 move_plt_plist (eind, edir);
4888 if (eind->elf.dynindx != -1)
4890 if (edir->elf.dynindx != -1)
4891 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4892 edir->elf.dynstr_index);
4893 edir->elf.dynindx = eind->elf.dynindx;
4894 edir->elf.dynstr_index = eind->elf.dynstr_index;
4895 eind->elf.dynindx = -1;
4896 eind->elf.dynstr_index = 0;
4900 /* Find the function descriptor hash entry from the given function code
4901 hash entry FH. Link the entries via their OH fields. */
4903 static struct ppc_link_hash_entry *
4904 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4906 struct ppc_link_hash_entry *fdh = fh->oh;
4910 const char *fd_name = fh->elf.root.root.string + 1;
4912 fdh = (struct ppc_link_hash_entry *)
4913 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4917 fdh->is_func_descriptor = 1;
4923 fdh = ppc_follow_link (fdh);
4924 fdh->is_func_descriptor = 1;
4929 /* Make a fake function descriptor sym for the undefined code sym FH. */
4931 static struct ppc_link_hash_entry *
4932 make_fdh (struct bfd_link_info *info,
4933 struct ppc_link_hash_entry *fh)
4935 bfd *abfd = fh->elf.root.u.undef.abfd;
4936 struct bfd_link_hash_entry *bh = NULL;
4937 struct ppc_link_hash_entry *fdh;
4938 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4942 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4943 fh->elf.root.root.string + 1,
4944 flags, bfd_und_section_ptr, 0,
4945 NULL, FALSE, FALSE, &bh))
4948 fdh = (struct ppc_link_hash_entry *) bh;
4949 fdh->elf.non_elf = 0;
4951 fdh->is_func_descriptor = 1;
4958 /* Fix function descriptor symbols defined in .opd sections to be
4962 ppc64_elf_add_symbol_hook (bfd *ibfd,
4963 struct bfd_link_info *info,
4964 Elf_Internal_Sym *isym,
4966 flagword *flags ATTRIBUTE_UNUSED,
4970 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4971 && (ibfd->flags & DYNAMIC) == 0
4972 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4973 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4976 && strcmp ((*sec)->name, ".opd") == 0)
4980 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4981 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4982 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4984 /* If the symbol is a function defined in .opd, and the function
4985 code is in a discarded group, let it appear to be undefined. */
4986 if (!bfd_link_relocatable (info)
4987 && (*sec)->reloc_count != 0
4988 && opd_entry_value (*sec, *value, &code_sec, NULL,
4989 FALSE) != (bfd_vma) -1
4990 && discarded_section (code_sec))
4992 *sec = bfd_und_section_ptr;
4993 isym->st_shndx = SHN_UNDEF;
4996 else if (*sec != NULL
4997 && strcmp ((*sec)->name, ".toc") == 0
4998 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
5000 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5002 htab->params->object_in_toc = 1;
5005 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5007 if (abiversion (ibfd) == 0)
5008 set_abiversion (ibfd, 2);
5009 else if (abiversion (ibfd) == 1)
5011 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
5012 " for ABI version 1\n"), name);
5013 bfd_set_error (bfd_error_bad_value);
5021 /* Merge non-visibility st_other attributes: local entry point. */
5024 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5025 const Elf_Internal_Sym *isym,
5026 bfd_boolean definition,
5027 bfd_boolean dynamic)
5029 if (definition && (!dynamic || !h->def_regular))
5030 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5031 | ELF_ST_VISIBILITY (h->other));
5034 /* Hook called on merging a symbol. We use this to clear "fake" since
5035 we now have a real symbol. */
5038 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
5039 const Elf_Internal_Sym *isym,
5040 asection **psec ATTRIBUTE_UNUSED,
5041 bfd_boolean newdef ATTRIBUTE_UNUSED,
5042 bfd_boolean olddef ATTRIBUTE_UNUSED,
5043 bfd *oldbfd ATTRIBUTE_UNUSED,
5044 const asection *oldsec ATTRIBUTE_UNUSED)
5046 ((struct ppc_link_hash_entry *) h)->fake = 0;
5047 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
5048 ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1;
5052 /* This function makes an old ABI object reference to ".bar" cause the
5053 inclusion of a new ABI object archive that defines "bar".
5054 NAME is a symbol defined in an archive. Return a symbol in the hash
5055 table that might be satisfied by the archive symbols. */
5057 static struct elf_link_hash_entry *
5058 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5059 struct bfd_link_info *info,
5062 struct elf_link_hash_entry *h;
5066 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5068 /* Don't return this sym if it is a fake function descriptor
5069 created by add_symbol_adjust. */
5070 && !((struct ppc_link_hash_entry *) h)->fake)
5076 len = strlen (name);
5077 dot_name = bfd_alloc (abfd, len + 2);
5078 if (dot_name == NULL)
5079 return (struct elf_link_hash_entry *) 0 - 1;
5081 memcpy (dot_name + 1, name, len + 1);
5082 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5083 bfd_release (abfd, dot_name);
5087 /* This function satisfies all old ABI object references to ".bar" if a
5088 new ABI object defines "bar". Well, at least, undefined dot symbols
5089 are made weak. This stops later archive searches from including an
5090 object if we already have a function descriptor definition. It also
5091 prevents the linker complaining about undefined symbols.
5092 We also check and correct mismatched symbol visibility here. The
5093 most restrictive visibility of the function descriptor and the
5094 function entry symbol is used. */
5097 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5099 struct ppc_link_hash_table *htab;
5100 struct ppc_link_hash_entry *fdh;
5102 if (eh->elf.root.type == bfd_link_hash_warning)
5103 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5105 if (eh->elf.root.type == bfd_link_hash_indirect)
5108 if (eh->elf.root.root.string[0] != '.')
5111 htab = ppc_hash_table (info);
5115 fdh = lookup_fdh (eh, htab);
5117 && !bfd_link_relocatable (info)
5118 && (eh->elf.root.type == bfd_link_hash_undefined
5119 || eh->elf.root.type == bfd_link_hash_undefweak)
5120 && eh->elf.ref_regular)
5122 /* Make an undefined function descriptor sym, in order to
5123 pull in an --as-needed shared lib. Archives are handled
5125 fdh = make_fdh (info, eh);
5132 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5133 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5135 /* Make both descriptor and entry symbol have the most
5136 constraining visibility of either symbol. */
5137 if (entry_vis < descr_vis)
5138 fdh->elf.other += entry_vis - descr_vis;
5139 else if (entry_vis > descr_vis)
5140 eh->elf.other += descr_vis - entry_vis;
5142 /* Propagate reference flags from entry symbol to function
5143 descriptor symbol. */
5144 fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular;
5145 fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic;
5146 fdh->elf.ref_regular |= eh->elf.ref_regular;
5147 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5149 if (!fdh->elf.forced_local
5150 && fdh->elf.dynindx == -1
5151 && fdh->elf.versioned != versioned_hidden
5152 && (bfd_link_dll (info)
5153 || fdh->elf.def_dynamic
5154 || fdh->elf.ref_dynamic)
5155 && (eh->elf.ref_regular
5156 || eh->elf.def_regular))
5158 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5166 /* Set up opd section info and abiversion for IBFD, and process list
5167 of dot-symbols we made in link_hash_newfunc. */
5170 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5172 struct ppc_link_hash_table *htab;
5173 struct ppc_link_hash_entry **p, *eh;
5174 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5176 if (opd != NULL && opd->size != 0)
5178 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5179 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5181 if (abiversion (ibfd) == 0)
5182 set_abiversion (ibfd, 1);
5183 else if (abiversion (ibfd) >= 2)
5185 /* xgettext:c-format */
5186 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5188 ibfd, abiversion (ibfd));
5189 bfd_set_error (bfd_error_bad_value);
5194 if (is_ppc64_elf (info->output_bfd))
5196 /* For input files without an explicit abiversion in e_flags
5197 we should have flagged any with symbol st_other bits set
5198 as ELFv1 and above flagged those with .opd as ELFv2.
5199 Set the output abiversion if not yet set, and for any input
5200 still ambiguous, take its abiversion from the output.
5201 Differences in ABI are reported later. */
5202 if (abiversion (info->output_bfd) == 0)
5203 set_abiversion (info->output_bfd, abiversion (ibfd));
5204 else if (abiversion (ibfd) == 0)
5205 set_abiversion (ibfd, abiversion (info->output_bfd));
5208 htab = ppc_hash_table (info);
5212 if (opd != NULL && opd->size != 0
5213 && (ibfd->flags & DYNAMIC) == 0
5214 && (opd->flags & SEC_RELOC) != 0
5215 && opd->reloc_count != 0
5216 && !bfd_is_abs_section (opd->output_section)
5217 && info->gc_sections)
5219 /* Garbage collection needs some extra help with .opd sections.
5220 We don't want to necessarily keep everything referenced by
5221 relocs in .opd, as that would keep all functions. Instead,
5222 if we reference an .opd symbol (a function descriptor), we
5223 want to keep the function code symbol's section. This is
5224 easy for global symbols, but for local syms we need to keep
5225 information about the associated function section. */
5227 asection **opd_sym_map;
5228 Elf_Internal_Shdr *symtab_hdr;
5229 Elf_Internal_Rela *relocs, *rel_end, *rel;
5231 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5232 opd_sym_map = bfd_zalloc (ibfd, amt);
5233 if (opd_sym_map == NULL)
5235 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5236 relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL,
5240 symtab_hdr = &elf_symtab_hdr (ibfd);
5241 rel_end = relocs + opd->reloc_count - 1;
5242 for (rel = relocs; rel < rel_end; rel++)
5244 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
5245 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
5247 if (r_type == R_PPC64_ADDR64
5248 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC
5249 && r_symndx < symtab_hdr->sh_info)
5251 Elf_Internal_Sym *isym;
5254 isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx);
5257 if (elf_section_data (opd)->relocs != relocs)
5262 s = bfd_section_from_elf_index (ibfd, isym->st_shndx);
5263 if (s != NULL && s != opd)
5264 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5267 if (elf_section_data (opd)->relocs != relocs)
5271 p = &htab->dot_syms;
5272 while ((eh = *p) != NULL)
5275 if (&eh->elf == htab->elf.hgot)
5277 else if (htab->elf.hgot == NULL
5278 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5279 htab->elf.hgot = &eh->elf;
5280 else if (abiversion (ibfd) <= 1)
5282 htab->need_func_desc_adj = 1;
5283 if (!add_symbol_adjust (eh, info))
5286 p = &eh->u.next_dot_sym;
5291 /* Undo hash table changes when an --as-needed input file is determined
5292 not to be needed. */
5295 ppc64_elf_notice_as_needed (bfd *ibfd,
5296 struct bfd_link_info *info,
5297 enum notice_asneeded_action act)
5299 if (act == notice_not_needed)
5301 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5306 htab->dot_syms = NULL;
5308 return _bfd_elf_notice_as_needed (ibfd, info, act);
5311 /* If --just-symbols against a final linked binary, then assume we need
5312 toc adjusting stubs when calling functions defined there. */
5315 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5317 if ((sec->flags & SEC_CODE) != 0
5318 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5319 && is_ppc64_elf (sec->owner))
5321 if (abiversion (sec->owner) >= 2
5322 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5323 sec->has_toc_reloc = 1;
5325 _bfd_elf_link_just_syms (sec, info);
5328 static struct plt_entry **
5329 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5330 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5332 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5333 struct plt_entry **local_plt;
5334 unsigned char *local_got_tls_masks;
5336 if (local_got_ents == NULL)
5338 bfd_size_type size = symtab_hdr->sh_info;
5340 size *= (sizeof (*local_got_ents)
5341 + sizeof (*local_plt)
5342 + sizeof (*local_got_tls_masks));
5343 local_got_ents = bfd_zalloc (abfd, size);
5344 if (local_got_ents == NULL)
5346 elf_local_got_ents (abfd) = local_got_ents;
5349 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5351 struct got_entry *ent;
5353 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5354 if (ent->addend == r_addend
5355 && ent->owner == abfd
5356 && ent->tls_type == tls_type)
5360 bfd_size_type amt = sizeof (*ent);
5361 ent = bfd_alloc (abfd, amt);
5364 ent->next = local_got_ents[r_symndx];
5365 ent->addend = r_addend;
5367 ent->tls_type = tls_type;
5368 ent->is_indirect = FALSE;
5369 ent->got.refcount = 0;
5370 local_got_ents[r_symndx] = ent;
5372 ent->got.refcount += 1;
5375 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5376 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5377 local_got_tls_masks[r_symndx] |= tls_type;
5379 return local_plt + r_symndx;
5383 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5385 struct plt_entry *ent;
5387 for (ent = *plist; ent != NULL; ent = ent->next)
5388 if (ent->addend == addend)
5392 bfd_size_type amt = sizeof (*ent);
5393 ent = bfd_alloc (abfd, amt);
5397 ent->addend = addend;
5398 ent->plt.refcount = 0;
5401 ent->plt.refcount += 1;
5406 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5408 return (r_type == R_PPC64_REL24
5409 || r_type == R_PPC64_REL14
5410 || r_type == R_PPC64_REL14_BRTAKEN
5411 || r_type == R_PPC64_REL14_BRNTAKEN
5412 || r_type == R_PPC64_ADDR24
5413 || r_type == R_PPC64_ADDR14
5414 || r_type == R_PPC64_ADDR14_BRTAKEN
5415 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5418 /* Look through the relocs for a section during the first phase, and
5419 calculate needed space in the global offset table, procedure
5420 linkage table, and dynamic reloc sections. */
5423 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5424 asection *sec, const Elf_Internal_Rela *relocs)
5426 struct ppc_link_hash_table *htab;
5427 Elf_Internal_Shdr *symtab_hdr;
5428 struct elf_link_hash_entry **sym_hashes;
5429 const Elf_Internal_Rela *rel;
5430 const Elf_Internal_Rela *rel_end;
5432 struct elf_link_hash_entry *tga, *dottga;
5435 if (bfd_link_relocatable (info))
5438 /* Don't do anything special with non-loaded, non-alloced sections.
5439 In particular, any relocs in such sections should not affect GOT
5440 and PLT reference counting (ie. we don't allow them to create GOT
5441 or PLT entries), there's no possibility or desire to optimize TLS
5442 relocs, and there's not much point in propagating relocs to shared
5443 libs that the dynamic linker won't relocate. */
5444 if ((sec->flags & SEC_ALLOC) == 0)
5447 BFD_ASSERT (is_ppc64_elf (abfd));
5449 htab = ppc_hash_table (info);
5453 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5454 FALSE, FALSE, TRUE);
5455 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5456 FALSE, FALSE, TRUE);
5457 symtab_hdr = &elf_symtab_hdr (abfd);
5458 sym_hashes = elf_sym_hashes (abfd);
5460 is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd;
5461 rel_end = relocs + sec->reloc_count;
5462 for (rel = relocs; rel < rel_end; rel++)
5464 unsigned long r_symndx;
5465 struct elf_link_hash_entry *h;
5466 enum elf_ppc64_reloc_type r_type;
5468 struct _ppc64_elf_section_data *ppc64_sec;
5469 struct plt_entry **ifunc, **plt_list;
5471 r_symndx = ELF64_R_SYM (rel->r_info);
5472 if (r_symndx < symtab_hdr->sh_info)
5476 struct ppc_link_hash_entry *eh;
5478 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5479 h = elf_follow_link (h);
5480 eh = (struct ppc_link_hash_entry *) h;
5482 /* PR15323, ref flags aren't set for references in the same
5484 h->root.non_ir_ref_regular = 1;
5485 if (eh->is_func && eh->oh != NULL)
5486 eh->oh->elf.root.non_ir_ref_regular = 1;
5488 if (h == htab->elf.hgot)
5489 sec->has_toc_reloc = 1;
5496 if (h->type == STT_GNU_IFUNC)
5499 ifunc = &h->plt.plist;
5504 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5509 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5511 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5512 rel->r_addend, PLT_IFUNC);
5518 r_type = ELF64_R_TYPE (rel->r_info);
5523 /* These special tls relocs tie a call to __tls_get_addr with
5524 its parameter symbol. */
5527 case R_PPC64_GOT_TLSLD16:
5528 case R_PPC64_GOT_TLSLD16_LO:
5529 case R_PPC64_GOT_TLSLD16_HI:
5530 case R_PPC64_GOT_TLSLD16_HA:
5531 tls_type = TLS_TLS | TLS_LD;
5534 case R_PPC64_GOT_TLSGD16:
5535 case R_PPC64_GOT_TLSGD16_LO:
5536 case R_PPC64_GOT_TLSGD16_HI:
5537 case R_PPC64_GOT_TLSGD16_HA:
5538 tls_type = TLS_TLS | TLS_GD;
5541 case R_PPC64_GOT_TPREL16_DS:
5542 case R_PPC64_GOT_TPREL16_LO_DS:
5543 case R_PPC64_GOT_TPREL16_HI:
5544 case R_PPC64_GOT_TPREL16_HA:
5545 if (bfd_link_dll (info))
5546 info->flags |= DF_STATIC_TLS;
5547 tls_type = TLS_TLS | TLS_TPREL;
5550 case R_PPC64_GOT_DTPREL16_DS:
5551 case R_PPC64_GOT_DTPREL16_LO_DS:
5552 case R_PPC64_GOT_DTPREL16_HI:
5553 case R_PPC64_GOT_DTPREL16_HA:
5554 tls_type = TLS_TLS | TLS_DTPREL;
5556 sec->has_tls_reloc = 1;
5560 case R_PPC64_GOT16_DS:
5561 case R_PPC64_GOT16_HA:
5562 case R_PPC64_GOT16_HI:
5563 case R_PPC64_GOT16_LO:
5564 case R_PPC64_GOT16_LO_DS:
5565 /* This symbol requires a global offset table entry. */
5566 sec->has_toc_reloc = 1;
5567 if (r_type == R_PPC64_GOT_TLSLD16
5568 || r_type == R_PPC64_GOT_TLSGD16
5569 || r_type == R_PPC64_GOT_TPREL16_DS
5570 || r_type == R_PPC64_GOT_DTPREL16_DS
5571 || r_type == R_PPC64_GOT16
5572 || r_type == R_PPC64_GOT16_DS)
5574 htab->do_multi_toc = 1;
5575 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5578 if (ppc64_elf_tdata (abfd)->got == NULL
5579 && !create_got_section (abfd, info))
5584 struct ppc_link_hash_entry *eh;
5585 struct got_entry *ent;
5587 eh = (struct ppc_link_hash_entry *) h;
5588 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5589 if (ent->addend == rel->r_addend
5590 && ent->owner == abfd
5591 && ent->tls_type == tls_type)
5595 bfd_size_type amt = sizeof (*ent);
5596 ent = bfd_alloc (abfd, amt);
5599 ent->next = eh->elf.got.glist;
5600 ent->addend = rel->r_addend;
5602 ent->tls_type = tls_type;
5603 ent->is_indirect = FALSE;
5604 ent->got.refcount = 0;
5605 eh->elf.got.glist = ent;
5607 ent->got.refcount += 1;
5608 eh->tls_mask |= tls_type;
5611 /* This is a global offset table entry for a local symbol. */
5612 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5613 rel->r_addend, tls_type))
5616 /* We may also need a plt entry if the symbol turns out to be
5618 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5620 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5625 case R_PPC64_PLT16_HA:
5626 case R_PPC64_PLT16_HI:
5627 case R_PPC64_PLT16_LO:
5630 /* This symbol requires a procedure linkage table entry. */
5635 if (h->root.root.string[0] == '.'
5636 && h->root.root.string[1] != '\0')
5637 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5638 plt_list = &h->plt.plist;
5640 if (plt_list == NULL)
5642 /* It does not make sense to have a procedure linkage
5643 table entry for a non-ifunc local symbol. */
5644 info->callbacks->einfo
5645 /* xgettext:c-format */
5646 (_("%H: %s reloc against local symbol\n"),
5647 abfd, sec, rel->r_offset,
5648 ppc64_elf_howto_table[r_type]->name);
5649 bfd_set_error (bfd_error_bad_value);
5652 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5656 /* The following relocations don't need to propagate the
5657 relocation if linking a shared object since they are
5658 section relative. */
5659 case R_PPC64_SECTOFF:
5660 case R_PPC64_SECTOFF_LO:
5661 case R_PPC64_SECTOFF_HI:
5662 case R_PPC64_SECTOFF_HA:
5663 case R_PPC64_SECTOFF_DS:
5664 case R_PPC64_SECTOFF_LO_DS:
5665 case R_PPC64_DTPREL16:
5666 case R_PPC64_DTPREL16_LO:
5667 case R_PPC64_DTPREL16_HI:
5668 case R_PPC64_DTPREL16_HA:
5669 case R_PPC64_DTPREL16_DS:
5670 case R_PPC64_DTPREL16_LO_DS:
5671 case R_PPC64_DTPREL16_HIGH:
5672 case R_PPC64_DTPREL16_HIGHA:
5673 case R_PPC64_DTPREL16_HIGHER:
5674 case R_PPC64_DTPREL16_HIGHERA:
5675 case R_PPC64_DTPREL16_HIGHEST:
5676 case R_PPC64_DTPREL16_HIGHESTA:
5681 case R_PPC64_REL16_LO:
5682 case R_PPC64_REL16_HI:
5683 case R_PPC64_REL16_HA:
5684 case R_PPC64_REL16DX_HA:
5687 /* Not supported as a dynamic relocation. */
5688 case R_PPC64_ADDR64_LOCAL:
5689 if (bfd_link_pic (info))
5691 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5693 /* xgettext:c-format */
5694 info->callbacks->einfo (_("%H: %s reloc unsupported "
5695 "in shared libraries and PIEs.\n"),
5696 abfd, sec, rel->r_offset,
5697 ppc64_elf_howto_table[r_type]->name);
5698 bfd_set_error (bfd_error_bad_value);
5704 case R_PPC64_TOC16_DS:
5705 htab->do_multi_toc = 1;
5706 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5708 case R_PPC64_TOC16_LO:
5709 case R_PPC64_TOC16_HI:
5710 case R_PPC64_TOC16_HA:
5711 case R_PPC64_TOC16_LO_DS:
5712 sec->has_toc_reloc = 1;
5719 /* This relocation describes the C++ object vtable hierarchy.
5720 Reconstruct it for later use during GC. */
5721 case R_PPC64_GNU_VTINHERIT:
5722 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5726 /* This relocation describes which C++ vtable entries are actually
5727 used. Record for later use during GC. */
5728 case R_PPC64_GNU_VTENTRY:
5729 BFD_ASSERT (h != NULL);
5731 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5736 case R_PPC64_REL14_BRTAKEN:
5737 case R_PPC64_REL14_BRNTAKEN:
5739 asection *dest = NULL;
5741 /* Heuristic: If jumping outside our section, chances are
5742 we are going to need a stub. */
5745 /* If the sym is weak it may be overridden later, so
5746 don't assume we know where a weak sym lives. */
5747 if (h->root.type == bfd_link_hash_defined)
5748 dest = h->root.u.def.section;
5752 Elf_Internal_Sym *isym;
5754 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5759 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5763 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5772 if (h->root.root.string[0] == '.'
5773 && h->root.root.string[1] != '\0')
5774 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5776 if (h == tga || h == dottga)
5778 sec->has_tls_reloc = 1;
5780 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5781 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5782 /* We have a new-style __tls_get_addr call with
5786 /* Mark this section as having an old-style call. */
5787 sec->has_tls_get_addr_call = 1;
5789 plt_list = &h->plt.plist;
5792 /* We may need a .plt entry if the function this reloc
5793 refers to is in a shared lib. */
5795 && !update_plt_info (abfd, plt_list, rel->r_addend))
5799 case R_PPC64_ADDR14:
5800 case R_PPC64_ADDR14_BRNTAKEN:
5801 case R_PPC64_ADDR14_BRTAKEN:
5802 case R_PPC64_ADDR24:
5805 case R_PPC64_TPREL64:
5806 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5807 if (bfd_link_dll (info))
5808 info->flags |= DF_STATIC_TLS;
5811 case R_PPC64_DTPMOD64:
5812 if (rel + 1 < rel_end
5813 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5814 && rel[1].r_offset == rel->r_offset + 8)
5815 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5817 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5820 case R_PPC64_DTPREL64:
5821 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5823 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5824 && rel[-1].r_offset == rel->r_offset - 8)
5825 /* This is the second reloc of a dtpmod, dtprel pair.
5826 Don't mark with TLS_DTPREL. */
5830 sec->has_tls_reloc = 1;
5833 struct ppc_link_hash_entry *eh;
5834 eh = (struct ppc_link_hash_entry *) h;
5835 eh->tls_mask |= tls_type;
5838 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5839 rel->r_addend, tls_type))
5842 ppc64_sec = ppc64_elf_section_data (sec);
5843 if (ppc64_sec->sec_type != sec_toc)
5847 /* One extra to simplify get_tls_mask. */
5848 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5849 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5850 if (ppc64_sec->u.toc.symndx == NULL)
5852 amt = sec->size * sizeof (bfd_vma) / 8;
5853 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5854 if (ppc64_sec->u.toc.add == NULL)
5856 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5857 ppc64_sec->sec_type = sec_toc;
5859 BFD_ASSERT (rel->r_offset % 8 == 0);
5860 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5861 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5863 /* Mark the second slot of a GD or LD entry.
5864 -1 to indicate GD and -2 to indicate LD. */
5865 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5866 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5867 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5868 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5871 case R_PPC64_TPREL16:
5872 case R_PPC64_TPREL16_LO:
5873 case R_PPC64_TPREL16_HI:
5874 case R_PPC64_TPREL16_HA:
5875 case R_PPC64_TPREL16_DS:
5876 case R_PPC64_TPREL16_LO_DS:
5877 case R_PPC64_TPREL16_HIGH:
5878 case R_PPC64_TPREL16_HIGHA:
5879 case R_PPC64_TPREL16_HIGHER:
5880 case R_PPC64_TPREL16_HIGHERA:
5881 case R_PPC64_TPREL16_HIGHEST:
5882 case R_PPC64_TPREL16_HIGHESTA:
5883 if (bfd_link_dll (info))
5884 info->flags |= DF_STATIC_TLS;
5887 case R_PPC64_ADDR64:
5889 && rel + 1 < rel_end
5890 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5893 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5897 case R_PPC64_ADDR16:
5898 case R_PPC64_ADDR16_DS:
5899 case R_PPC64_ADDR16_HA:
5900 case R_PPC64_ADDR16_HI:
5901 case R_PPC64_ADDR16_HIGH:
5902 case R_PPC64_ADDR16_HIGHA:
5903 case R_PPC64_ADDR16_HIGHER:
5904 case R_PPC64_ADDR16_HIGHERA:
5905 case R_PPC64_ADDR16_HIGHEST:
5906 case R_PPC64_ADDR16_HIGHESTA:
5907 case R_PPC64_ADDR16_LO:
5908 case R_PPC64_ADDR16_LO_DS:
5909 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5910 && rel->r_addend == 0)
5912 /* We may need a .plt entry if this reloc refers to a
5913 function in a shared lib. */
5914 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5916 h->pointer_equality_needed = 1;
5923 case R_PPC64_ADDR32:
5924 case R_PPC64_UADDR16:
5925 case R_PPC64_UADDR32:
5926 case R_PPC64_UADDR64:
5928 if (h != NULL && !bfd_link_pic (info))
5929 /* We may need a copy reloc. */
5932 /* Don't propagate .opd relocs. */
5933 if (NO_OPD_RELOCS && is_opd)
5936 /* If we are creating a shared library, and this is a reloc
5937 against a global symbol, or a non PC relative reloc
5938 against a local symbol, then we need to copy the reloc
5939 into the shared library. However, if we are linking with
5940 -Bsymbolic, we do not need to copy a reloc against a
5941 global symbol which is defined in an object we are
5942 including in the link (i.e., DEF_REGULAR is set). At
5943 this point we have not seen all the input files, so it is
5944 possible that DEF_REGULAR is not set now but will be set
5945 later (it is never cleared). In case of a weak definition,
5946 DEF_REGULAR may be cleared later by a strong definition in
5947 a shared library. We account for that possibility below by
5948 storing information in the dyn_relocs field of the hash
5949 table entry. A similar situation occurs when creating
5950 shared libraries and symbol visibility changes render the
5953 If on the other hand, we are creating an executable, we
5954 may need to keep relocations for symbols satisfied by a
5955 dynamic library if we manage to avoid copy relocs for the
5958 if ((bfd_link_pic (info)
5959 && (must_be_dyn_reloc (info, r_type)
5961 && (!SYMBOLIC_BIND (info, h)
5962 || h->root.type == bfd_link_hash_defweak
5963 || !h->def_regular))))
5964 || (ELIMINATE_COPY_RELOCS
5965 && !bfd_link_pic (info)
5967 && (h->root.type == bfd_link_hash_defweak
5968 || !h->def_regular))
5969 || (!bfd_link_pic (info)
5972 /* We must copy these reloc types into the output file.
5973 Create a reloc section in dynobj and make room for
5977 sreloc = _bfd_elf_make_dynamic_reloc_section
5978 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5984 /* If this is a global symbol, we count the number of
5985 relocations we need for this symbol. */
5988 struct elf_dyn_relocs *p;
5989 struct elf_dyn_relocs **head;
5991 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5993 if (p == NULL || p->sec != sec)
5995 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6005 if (!must_be_dyn_reloc (info, r_type))
6010 /* Track dynamic relocs needed for local syms too.
6011 We really need local syms available to do this
6013 struct ppc_dyn_relocs *p;
6014 struct ppc_dyn_relocs **head;
6015 bfd_boolean is_ifunc;
6018 Elf_Internal_Sym *isym;
6020 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
6025 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
6029 vpp = &elf_section_data (s)->local_dynrel;
6030 head = (struct ppc_dyn_relocs **) vpp;
6031 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
6033 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
6035 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
6037 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
6043 p->ifunc = is_ifunc;
6059 /* Merge backend specific data from an object file to the output
6060 object file when linking. */
6063 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6065 bfd *obfd = info->output_bfd;
6066 unsigned long iflags, oflags;
6068 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6071 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6074 if (!_bfd_generic_verify_endian_match (ibfd, info))
6077 iflags = elf_elfheader (ibfd)->e_flags;
6078 oflags = elf_elfheader (obfd)->e_flags;
6080 if (iflags & ~EF_PPC64_ABI)
6083 /* xgettext:c-format */
6084 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6085 bfd_set_error (bfd_error_bad_value);
6088 else if (iflags != oflags && iflags != 0)
6091 /* xgettext:c-format */
6092 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6093 ibfd, iflags, oflags);
6094 bfd_set_error (bfd_error_bad_value);
6098 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6100 /* Merge Tag_compatibility attributes and any common GNU ones. */
6101 _bfd_elf_merge_object_attributes (ibfd, info);
6107 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6109 /* Print normal ELF private data. */
6110 _bfd_elf_print_private_bfd_data (abfd, ptr);
6112 if (elf_elfheader (abfd)->e_flags != 0)
6116 fprintf (file, _("private flags = 0x%lx:"),
6117 elf_elfheader (abfd)->e_flags);
6119 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6120 fprintf (file, _(" [abiv%ld]"),
6121 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6128 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6129 of the code entry point, and its section, which must be in the same
6130 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6133 opd_entry_value (asection *opd_sec,
6135 asection **code_sec,
6137 bfd_boolean in_code_sec)
6139 bfd *opd_bfd = opd_sec->owner;
6140 Elf_Internal_Rela *relocs;
6141 Elf_Internal_Rela *lo, *hi, *look;
6144 /* No relocs implies we are linking a --just-symbols object, or looking
6145 at a final linked executable with addr2line or somesuch. */
6146 if (opd_sec->reloc_count == 0)
6148 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6150 if (contents == NULL)
6152 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6153 return (bfd_vma) -1;
6154 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6157 /* PR 17512: file: 64b9dfbb. */
6158 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6159 return (bfd_vma) -1;
6161 val = bfd_get_64 (opd_bfd, contents + offset);
6162 if (code_sec != NULL)
6164 asection *sec, *likely = NULL;
6170 && val < sec->vma + sec->size)
6176 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6178 && (sec->flags & SEC_LOAD) != 0
6179 && (sec->flags & SEC_ALLOC) != 0)
6184 if (code_off != NULL)
6185 *code_off = val - likely->vma;
6191 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6193 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6195 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6196 /* PR 17512: file: df8e1fd6. */
6198 return (bfd_vma) -1;
6200 /* Go find the opd reloc at the sym address. */
6202 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6206 look = lo + (hi - lo) / 2;
6207 if (look->r_offset < offset)
6209 else if (look->r_offset > offset)
6213 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6215 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6216 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6218 unsigned long symndx = ELF64_R_SYM (look->r_info);
6219 asection *sec = NULL;
6221 if (symndx >= symtab_hdr->sh_info
6222 && elf_sym_hashes (opd_bfd) != NULL)
6224 struct elf_link_hash_entry **sym_hashes;
6225 struct elf_link_hash_entry *rh;
6227 sym_hashes = elf_sym_hashes (opd_bfd);
6228 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6231 rh = elf_follow_link (rh);
6232 if (rh->root.type != bfd_link_hash_defined
6233 && rh->root.type != bfd_link_hash_defweak)
6235 if (rh->root.u.def.section->owner == opd_bfd)
6237 val = rh->root.u.def.value;
6238 sec = rh->root.u.def.section;
6245 Elf_Internal_Sym *sym;
6247 if (symndx < symtab_hdr->sh_info)
6249 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6252 size_t symcnt = symtab_hdr->sh_info;
6253 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6258 symtab_hdr->contents = (bfd_byte *) sym;
6264 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6270 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6273 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6274 val = sym->st_value;
6277 val += look->r_addend;
6278 if (code_off != NULL)
6280 if (code_sec != NULL)
6282 if (in_code_sec && *code_sec != sec)
6287 if (sec->output_section != NULL)
6288 val += sec->output_section->vma + sec->output_offset;
6297 /* If the ELF symbol SYM might be a function in SEC, return the
6298 function size and set *CODE_OFF to the function's entry point,
6299 otherwise return zero. */
6301 static bfd_size_type
6302 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6307 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6308 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6312 if (!(sym->flags & BSF_SYNTHETIC))
6313 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6315 if (strcmp (sym->section->name, ".opd") == 0)
6317 struct _opd_sec_data *opd = get_opd_info (sym->section);
6318 bfd_vma symval = sym->value;
6321 && opd->adjust != NULL
6322 && elf_section_data (sym->section)->relocs != NULL)
6324 /* opd_entry_value will use cached relocs that have been
6325 adjusted, but with raw symbols. That means both local
6326 and global symbols need adjusting. */
6327 long adjust = opd->adjust[OPD_NDX (symval)];
6333 if (opd_entry_value (sym->section, symval,
6334 &sec, code_off, TRUE) == (bfd_vma) -1)
6336 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6337 symbol. This size has nothing to do with the code size of the
6338 function, which is what we're supposed to return, but the
6339 code size isn't available without looking up the dot-sym.
6340 However, doing that would be a waste of time particularly
6341 since elf_find_function will look at the dot-sym anyway.
6342 Now, elf_find_function will keep the largest size of any
6343 function sym found at the code address of interest, so return
6344 1 here to avoid it incorrectly caching a larger function size
6345 for a small function. This does mean we return the wrong
6346 size for a new-ABI function of size 24, but all that does is
6347 disable caching for such functions. */
6353 if (sym->section != sec)
6355 *code_off = sym->value;
6362 /* Return true if symbol is a strong function defined in an ELFv2
6363 object with st_other localentry bits of zero, ie. its local entry
6364 point coincides with its global entry point. */
6367 is_elfv2_localentry0 (struct elf_link_hash_entry *h)
6370 && h->type == STT_FUNC
6371 && h->root.type == bfd_link_hash_defined
6372 && (STO_PPC64_LOCAL_MASK & h->other) == 0
6373 && !((struct ppc_link_hash_entry *) h)->non_zero_localentry
6374 && is_ppc64_elf (h->root.u.def.section->owner)
6375 && abiversion (h->root.u.def.section->owner) >= 2);
6378 /* Return true if symbol is defined in a regular object file. */
6381 is_static_defined (struct elf_link_hash_entry *h)
6383 return ((h->root.type == bfd_link_hash_defined
6384 || h->root.type == bfd_link_hash_defweak)
6385 && h->root.u.def.section != NULL
6386 && h->root.u.def.section->output_section != NULL);
6389 /* If FDH is a function descriptor symbol, return the associated code
6390 entry symbol if it is defined. Return NULL otherwise. */
6392 static struct ppc_link_hash_entry *
6393 defined_code_entry (struct ppc_link_hash_entry *fdh)
6395 if (fdh->is_func_descriptor)
6397 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6398 if (fh->elf.root.type == bfd_link_hash_defined
6399 || fh->elf.root.type == bfd_link_hash_defweak)
6405 /* If FH is a function code entry symbol, return the associated
6406 function descriptor symbol if it is defined. Return NULL otherwise. */
6408 static struct ppc_link_hash_entry *
6409 defined_func_desc (struct ppc_link_hash_entry *fh)
6412 && fh->oh->is_func_descriptor)
6414 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6415 if (fdh->elf.root.type == bfd_link_hash_defined
6416 || fdh->elf.root.type == bfd_link_hash_defweak)
6422 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6424 /* Garbage collect sections, after first dealing with dot-symbols. */
6427 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6429 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6431 if (htab != NULL && htab->need_func_desc_adj)
6433 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6434 htab->need_func_desc_adj = 0;
6436 return bfd_elf_gc_sections (abfd, info);
6439 /* Mark all our entry sym sections, both opd and code section. */
6442 ppc64_elf_gc_keep (struct bfd_link_info *info)
6444 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6445 struct bfd_sym_chain *sym;
6450 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6452 struct ppc_link_hash_entry *eh, *fh;
6455 eh = (struct ppc_link_hash_entry *)
6456 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6459 if (eh->elf.root.type != bfd_link_hash_defined
6460 && eh->elf.root.type != bfd_link_hash_defweak)
6463 fh = defined_code_entry (eh);
6466 sec = fh->elf.root.u.def.section;
6467 sec->flags |= SEC_KEEP;
6469 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6470 && opd_entry_value (eh->elf.root.u.def.section,
6471 eh->elf.root.u.def.value,
6472 &sec, NULL, FALSE) != (bfd_vma) -1)
6473 sec->flags |= SEC_KEEP;
6475 sec = eh->elf.root.u.def.section;
6476 sec->flags |= SEC_KEEP;
6480 /* Mark sections containing dynamically referenced symbols. When
6481 building shared libraries, we must assume that any visible symbol is
6485 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6487 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6488 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6489 struct ppc_link_hash_entry *fdh;
6490 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6492 /* Dynamic linking info is on the func descriptor sym. */
6493 fdh = defined_func_desc (eh);
6497 if ((eh->elf.root.type == bfd_link_hash_defined
6498 || eh->elf.root.type == bfd_link_hash_defweak)
6499 && (eh->elf.ref_dynamic
6500 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6501 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6502 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6503 && (!bfd_link_executable (info)
6504 || info->gc_keep_exported
6505 || info->export_dynamic
6508 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6509 && (eh->elf.versioned >= versioned
6510 || !bfd_hide_sym_by_version (info->version_info,
6511 eh->elf.root.root.string)))))
6514 struct ppc_link_hash_entry *fh;
6516 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6518 /* Function descriptor syms cause the associated
6519 function code sym section to be marked. */
6520 fh = defined_code_entry (eh);
6523 code_sec = fh->elf.root.u.def.section;
6524 code_sec->flags |= SEC_KEEP;
6526 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6527 && opd_entry_value (eh->elf.root.u.def.section,
6528 eh->elf.root.u.def.value,
6529 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6530 code_sec->flags |= SEC_KEEP;
6536 /* Return the section that should be marked against GC for a given
6540 ppc64_elf_gc_mark_hook (asection *sec,
6541 struct bfd_link_info *info,
6542 Elf_Internal_Rela *rel,
6543 struct elf_link_hash_entry *h,
6544 Elf_Internal_Sym *sym)
6548 /* Syms return NULL if we're marking .opd, so we avoid marking all
6549 function sections, as all functions are referenced in .opd. */
6551 if (get_opd_info (sec) != NULL)
6556 enum elf_ppc64_reloc_type r_type;
6557 struct ppc_link_hash_entry *eh, *fh, *fdh;
6559 r_type = ELF64_R_TYPE (rel->r_info);
6562 case R_PPC64_GNU_VTINHERIT:
6563 case R_PPC64_GNU_VTENTRY:
6567 switch (h->root.type)
6569 case bfd_link_hash_defined:
6570 case bfd_link_hash_defweak:
6571 eh = (struct ppc_link_hash_entry *) h;
6572 fdh = defined_func_desc (eh);
6575 /* -mcall-aixdesc code references the dot-symbol on
6576 a call reloc. Mark the function descriptor too
6577 against garbage collection. */
6579 if (fdh->elf.u.weakdef != NULL)
6580 fdh->elf.u.weakdef->mark = 1;
6584 /* Function descriptor syms cause the associated
6585 function code sym section to be marked. */
6586 fh = defined_code_entry (eh);
6589 /* They also mark their opd section. */
6590 eh->elf.root.u.def.section->gc_mark = 1;
6592 rsec = fh->elf.root.u.def.section;
6594 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6595 && opd_entry_value (eh->elf.root.u.def.section,
6596 eh->elf.root.u.def.value,
6597 &rsec, NULL, FALSE) != (bfd_vma) -1)
6598 eh->elf.root.u.def.section->gc_mark = 1;
6600 rsec = h->root.u.def.section;
6603 case bfd_link_hash_common:
6604 rsec = h->root.u.c.p->section;
6608 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6614 struct _opd_sec_data *opd;
6616 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6617 opd = get_opd_info (rsec);
6618 if (opd != NULL && opd->func_sec != NULL)
6622 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6629 /* Update the .got, .plt. and dynamic reloc reference counts for the
6630 section being removed. */
6633 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6634 asection *sec, const Elf_Internal_Rela *relocs)
6636 struct ppc_link_hash_table *htab;
6637 Elf_Internal_Shdr *symtab_hdr;
6638 struct elf_link_hash_entry **sym_hashes;
6639 struct got_entry **local_got_ents;
6640 const Elf_Internal_Rela *rel, *relend;
6642 if (bfd_link_relocatable (info))
6645 if ((sec->flags & SEC_ALLOC) == 0)
6648 elf_section_data (sec)->local_dynrel = NULL;
6650 htab = ppc_hash_table (info);
6654 symtab_hdr = &elf_symtab_hdr (abfd);
6655 sym_hashes = elf_sym_hashes (abfd);
6656 local_got_ents = elf_local_got_ents (abfd);
6658 relend = relocs + sec->reloc_count;
6659 for (rel = relocs; rel < relend; rel++)
6661 unsigned long r_symndx;
6662 enum elf_ppc64_reloc_type r_type;
6663 struct elf_link_hash_entry *h = NULL;
6664 struct plt_entry **plt_list = NULL;
6665 unsigned char tls_type = 0;
6667 r_symndx = ELF64_R_SYM (rel->r_info);
6668 r_type = ELF64_R_TYPE (rel->r_info);
6669 if (r_symndx >= symtab_hdr->sh_info)
6671 struct ppc_link_hash_entry *eh;
6672 struct elf_dyn_relocs **pp;
6673 struct elf_dyn_relocs *p;
6675 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6676 h = elf_follow_link (h);
6677 eh = (struct ppc_link_hash_entry *) h;
6679 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6682 /* Everything must go for SEC. */
6690 case R_PPC64_GOT_TLSLD16:
6691 case R_PPC64_GOT_TLSLD16_LO:
6692 case R_PPC64_GOT_TLSLD16_HI:
6693 case R_PPC64_GOT_TLSLD16_HA:
6694 tls_type = TLS_TLS | TLS_LD;
6697 case R_PPC64_GOT_TLSGD16:
6698 case R_PPC64_GOT_TLSGD16_LO:
6699 case R_PPC64_GOT_TLSGD16_HI:
6700 case R_PPC64_GOT_TLSGD16_HA:
6701 tls_type = TLS_TLS | TLS_GD;
6704 case R_PPC64_GOT_TPREL16_DS:
6705 case R_PPC64_GOT_TPREL16_LO_DS:
6706 case R_PPC64_GOT_TPREL16_HI:
6707 case R_PPC64_GOT_TPREL16_HA:
6708 tls_type = TLS_TLS | TLS_TPREL;
6711 case R_PPC64_GOT_DTPREL16_DS:
6712 case R_PPC64_GOT_DTPREL16_LO_DS:
6713 case R_PPC64_GOT_DTPREL16_HI:
6714 case R_PPC64_GOT_DTPREL16_HA:
6715 tls_type = TLS_TLS | TLS_DTPREL;
6719 case R_PPC64_GOT16_DS:
6720 case R_PPC64_GOT16_HA:
6721 case R_PPC64_GOT16_HI:
6722 case R_PPC64_GOT16_LO:
6723 case R_PPC64_GOT16_LO_DS:
6726 struct got_entry *ent;
6731 ent = local_got_ents[r_symndx];
6733 for (; ent != NULL; ent = ent->next)
6734 if (ent->addend == rel->r_addend
6735 && ent->owner == abfd
6736 && ent->tls_type == tls_type)
6740 if (ent->got.refcount > 0)
6741 ent->got.refcount -= 1;
6743 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
6744 plt_list = &h->plt.plist;
6747 case R_PPC64_PLT16_HA:
6748 case R_PPC64_PLT16_HI:
6749 case R_PPC64_PLT16_LO:
6753 case R_PPC64_REL14_BRNTAKEN:
6754 case R_PPC64_REL14_BRTAKEN:
6757 plt_list = &h->plt.plist;
6758 else if (local_got_ents != NULL)
6760 struct plt_entry **local_plt = (struct plt_entry **)
6761 (local_got_ents + symtab_hdr->sh_info);
6762 unsigned char *local_got_tls_masks = (unsigned char *)
6763 (local_plt + symtab_hdr->sh_info);
6764 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6765 plt_list = local_plt + r_symndx;
6769 case R_PPC64_ADDR64:
6770 case R_PPC64_ADDR16:
6771 case R_PPC64_ADDR16_DS:
6772 case R_PPC64_ADDR16_HA:
6773 case R_PPC64_ADDR16_HI:
6774 case R_PPC64_ADDR16_HIGH:
6775 case R_PPC64_ADDR16_HIGHA:
6776 case R_PPC64_ADDR16_HIGHER:
6777 case R_PPC64_ADDR16_HIGHERA:
6778 case R_PPC64_ADDR16_HIGHEST:
6779 case R_PPC64_ADDR16_HIGHESTA:
6780 case R_PPC64_ADDR16_LO:
6781 case R_PPC64_ADDR16_LO_DS:
6782 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
6783 && rel->r_addend == 0)
6784 plt_list = &h->plt.plist;
6790 if (plt_list != NULL)
6792 struct plt_entry *ent;
6794 for (ent = *plt_list; ent != NULL; ent = ent->next)
6795 if (ent->addend == rel->r_addend)
6797 if (ent != NULL && ent->plt.refcount > 0)
6798 ent->plt.refcount -= 1;
6804 /* The maximum size of .sfpr. */
6805 #define SFPR_MAX (218*4)
6807 struct sfpr_def_parms
6809 const char name[12];
6810 unsigned char lo, hi;
6811 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6812 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6815 /* Auto-generate _save*, _rest* functions in .sfpr.
6816 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6820 sfpr_define (struct bfd_link_info *info,
6821 const struct sfpr_def_parms *parm,
6824 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6826 size_t len = strlen (parm->name);
6827 bfd_boolean writing = FALSE;
6833 memcpy (sym, parm->name, len);
6836 for (i = parm->lo; i <= parm->hi; i++)
6838 struct ppc_link_hash_entry *h;
6840 sym[len + 0] = i / 10 + '0';
6841 sym[len + 1] = i % 10 + '0';
6842 h = (struct ppc_link_hash_entry *)
6843 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6844 if (stub_sec != NULL)
6847 && h->elf.root.type == bfd_link_hash_defined
6848 && h->elf.root.u.def.section == htab->sfpr)
6850 struct elf_link_hash_entry *s;
6852 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6853 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6856 if (s->root.type == bfd_link_hash_new
6857 || (s->root.type = bfd_link_hash_defined
6858 && s->root.u.def.section == stub_sec))
6860 s->root.type = bfd_link_hash_defined;
6861 s->root.u.def.section = stub_sec;
6862 s->root.u.def.value = (stub_sec->size
6863 + h->elf.root.u.def.value);
6866 s->ref_regular_nonweak = 1;
6867 s->forced_local = 1;
6869 s->root.linker_def = 1;
6877 if (!h->elf.def_regular)
6879 h->elf.root.type = bfd_link_hash_defined;
6880 h->elf.root.u.def.section = htab->sfpr;
6881 h->elf.root.u.def.value = htab->sfpr->size;
6882 h->elf.type = STT_FUNC;
6883 h->elf.def_regular = 1;
6885 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6887 if (htab->sfpr->contents == NULL)
6889 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6890 if (htab->sfpr->contents == NULL)
6897 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6899 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6901 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6902 htab->sfpr->size = p - htab->sfpr->contents;
6910 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6912 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6917 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6919 p = savegpr0 (abfd, p, r);
6920 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6922 bfd_put_32 (abfd, BLR, p);
6927 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6929 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6934 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6936 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6938 p = restgpr0 (abfd, p, r);
6939 bfd_put_32 (abfd, MTLR_R0, p);
6943 p = restgpr0 (abfd, p, 30);
6944 p = restgpr0 (abfd, p, 31);
6946 bfd_put_32 (abfd, BLR, p);
6951 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6953 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6958 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6960 p = savegpr1 (abfd, p, r);
6961 bfd_put_32 (abfd, BLR, p);
6966 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6968 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6973 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6975 p = restgpr1 (abfd, p, r);
6976 bfd_put_32 (abfd, BLR, p);
6981 savefpr (bfd *abfd, bfd_byte *p, int r)
6983 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6988 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6990 p = savefpr (abfd, p, r);
6991 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6993 bfd_put_32 (abfd, BLR, p);
6998 restfpr (bfd *abfd, bfd_byte *p, int r)
7000 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
7005 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
7007 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
7009 p = restfpr (abfd, p, r);
7010 bfd_put_32 (abfd, MTLR_R0, p);
7014 p = restfpr (abfd, p, 30);
7015 p = restfpr (abfd, p, 31);
7017 bfd_put_32 (abfd, BLR, p);
7022 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
7024 p = savefpr (abfd, p, r);
7025 bfd_put_32 (abfd, BLR, p);
7030 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
7032 p = restfpr (abfd, p, r);
7033 bfd_put_32 (abfd, BLR, p);
7038 savevr (bfd *abfd, bfd_byte *p, int r)
7040 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7042 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
7047 savevr_tail (bfd *abfd, bfd_byte *p, int r)
7049 p = savevr (abfd, p, r);
7050 bfd_put_32 (abfd, BLR, p);
7055 restvr (bfd *abfd, bfd_byte *p, int r)
7057 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
7059 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
7064 restvr_tail (bfd *abfd, bfd_byte *p, int r)
7066 p = restvr (abfd, p, r);
7067 bfd_put_32 (abfd, BLR, p);
7071 /* Called via elf_link_hash_traverse to transfer dynamic linking
7072 information on function code symbol entries to their corresponding
7073 function descriptor symbol entries. */
7076 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
7078 struct bfd_link_info *info;
7079 struct ppc_link_hash_table *htab;
7080 struct ppc_link_hash_entry *fh;
7081 struct ppc_link_hash_entry *fdh;
7082 bfd_boolean force_local;
7084 fh = (struct ppc_link_hash_entry *) h;
7085 if (fh->elf.root.type == bfd_link_hash_indirect)
7091 if (fh->elf.root.root.string[0] != '.'
7092 || fh->elf.root.root.string[1] == '\0')
7096 htab = ppc_hash_table (info);
7100 /* Find the corresponding function descriptor symbol. */
7101 fdh = lookup_fdh (fh, htab);
7103 /* Resolve undefined references to dot-symbols as the value
7104 in the function descriptor, if we have one in a regular object.
7105 This is to satisfy cases like ".quad .foo". Calls to functions
7106 in dynamic objects are handled elsewhere. */
7107 if ((fh->elf.root.type == bfd_link_hash_undefined
7108 || fh->elf.root.type == bfd_link_hash_undefweak)
7109 && (fdh->elf.root.type == bfd_link_hash_defined
7110 || fdh->elf.root.type == bfd_link_hash_defweak)
7111 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7112 && opd_entry_value (fdh->elf.root.u.def.section,
7113 fdh->elf.root.u.def.value,
7114 &fh->elf.root.u.def.section,
7115 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7117 fh->elf.root.type = fdh->elf.root.type;
7118 fh->elf.forced_local = 1;
7119 fh->elf.def_regular = fdh->elf.def_regular;
7120 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7123 if (!fh->elf.dynamic)
7125 struct plt_entry *ent;
7127 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7128 if (ent->plt.refcount > 0)
7134 /* Create a descriptor as undefined if necessary. */
7136 && !bfd_link_executable (info)
7137 && (fh->elf.root.type == bfd_link_hash_undefined
7138 || fh->elf.root.type == bfd_link_hash_undefweak))
7140 fdh = make_fdh (info, fh);
7145 /* We can't support overriding of symbols on a fake descriptor. */
7148 && (fh->elf.root.type == bfd_link_hash_defined
7149 || fh->elf.root.type == bfd_link_hash_defweak))
7150 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7152 /* Transfer dynamic linking information to the function descriptor. */
7155 fdh->elf.ref_regular |= fh->elf.ref_regular;
7156 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7157 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7158 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7159 fdh->elf.dynamic |= fh->elf.dynamic;
7160 fdh->elf.needs_plt |= (fh->elf.needs_plt
7161 || fh->elf.type == STT_FUNC
7162 || fh->elf.type == STT_GNU_IFUNC);
7163 move_plt_plist (fh, fdh);
7165 if (!fdh->elf.forced_local
7166 && fh->elf.dynindx != -1)
7167 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7171 /* Now that the info is on the function descriptor, clear the
7172 function code sym info. Any function code syms for which we
7173 don't have a definition in a regular file, we force local.
7174 This prevents a shared library from exporting syms that have
7175 been imported from another library. Function code syms that
7176 are really in the library we must leave global to prevent the
7177 linker dragging in a definition from a static library. */
7178 force_local = (!fh->elf.def_regular
7180 || !fdh->elf.def_regular
7181 || fdh->elf.forced_local);
7182 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7187 static const struct sfpr_def_parms save_res_funcs[] =
7189 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7190 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7191 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7192 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7193 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7194 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7195 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7196 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7197 { "._savef", 14, 31, savefpr, savefpr1_tail },
7198 { "._restf", 14, 31, restfpr, restfpr1_tail },
7199 { "_savevr_", 20, 31, savevr, savevr_tail },
7200 { "_restvr_", 20, 31, restvr, restvr_tail }
7203 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7204 this hook to a) provide some gcc support functions, and b) transfer
7205 dynamic linking information gathered so far on function code symbol
7206 entries, to their corresponding function descriptor symbol entries. */
7209 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7210 struct bfd_link_info *info)
7212 struct ppc_link_hash_table *htab;
7214 htab = ppc_hash_table (info);
7218 /* Provide any missing _save* and _rest* functions. */
7219 if (htab->sfpr != NULL)
7223 htab->sfpr->size = 0;
7224 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7225 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7227 if (htab->sfpr->size == 0)
7228 htab->sfpr->flags |= SEC_EXCLUDE;
7231 if (bfd_link_relocatable (info))
7234 if (htab->elf.hgot != NULL)
7236 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7237 /* Make .TOC. defined so as to prevent it being made dynamic.
7238 The wrong value here is fixed later in ppc64_elf_set_toc. */
7239 if (!htab->elf.hgot->def_regular
7240 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7242 htab->elf.hgot->root.type = bfd_link_hash_defined;
7243 htab->elf.hgot->root.u.def.value = 0;
7244 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7245 htab->elf.hgot->def_regular = 1;
7246 htab->elf.hgot->root.linker_def = 1;
7248 htab->elf.hgot->type = STT_OBJECT;
7249 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7253 if (htab->need_func_desc_adj)
7255 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7256 htab->need_func_desc_adj = 0;
7262 /* Return true if we have dynamic relocs against H that apply to
7263 read-only sections. */
7266 readonly_dynrelocs (struct elf_link_hash_entry *h)
7268 struct ppc_link_hash_entry *eh;
7269 struct elf_dyn_relocs *p;
7271 eh = (struct ppc_link_hash_entry *) h;
7272 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7274 asection *s = p->sec->output_section;
7276 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7282 /* Return true if we have dynamic relocs against H or any of its weak
7283 aliases, that apply to read-only sections. */
7286 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7288 struct ppc_link_hash_entry *eh;
7290 eh = (struct ppc_link_hash_entry *) h;
7293 if (readonly_dynrelocs (&eh->elf))
7296 } while (eh != NULL && &eh->elf != h);
7301 /* Return whether EH has pc-relative dynamic relocs. */
7304 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7306 struct elf_dyn_relocs *p;
7308 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7309 if (p->pc_count != 0)
7314 /* Return true if a global entry stub will be created for H. Valid
7315 for ELFv2 before plt entries have been allocated. */
7318 global_entry_stub (struct elf_link_hash_entry *h)
7320 struct plt_entry *pent;
7322 if (!h->pointer_equality_needed
7326 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7327 if (pent->plt.refcount > 0
7328 && pent->addend == 0)
7334 /* Adjust a symbol defined by a dynamic object and referenced by a
7335 regular object. The current definition is in some section of the
7336 dynamic object, but we're not including those sections. We have to
7337 change the definition to something the rest of the link can
7341 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7342 struct elf_link_hash_entry *h)
7344 struct ppc_link_hash_table *htab;
7347 htab = ppc_hash_table (info);
7351 /* Deal with function syms. */
7352 if (h->type == STT_FUNC
7353 || h->type == STT_GNU_IFUNC
7356 /* Clear procedure linkage table information for any symbol that
7357 won't need a .plt entry. */
7358 struct plt_entry *ent;
7359 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7360 if (ent->plt.refcount > 0)
7363 || (h->type != STT_GNU_IFUNC
7364 && (SYMBOL_CALLS_LOCAL (info, h)
7365 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
7366 || ((struct ppc_link_hash_entry *) h)->save_res)
7368 h->plt.plist = NULL;
7370 h->pointer_equality_needed = 0;
7372 else if (abiversion (info->output_bfd) >= 2)
7374 /* Taking a function's address in a read/write section
7375 doesn't require us to define the function symbol in the
7376 executable on a global entry stub. A dynamic reloc can
7377 be used instead. The reason we prefer a few more dynamic
7378 relocs is that calling via a global entry stub costs a
7379 few more instructions, and pointer_equality_needed causes
7380 extra work in ld.so when resolving these symbols. */
7381 if (global_entry_stub (h)
7382 && !alias_readonly_dynrelocs (h))
7384 h->pointer_equality_needed = 0;
7385 /* After adjust_dynamic_symbol, non_got_ref set in
7386 the non-pic case means that dyn_relocs for this
7387 symbol should be discarded. */
7391 /* If making a plt entry, then we don't need copy relocs. */
7396 h->plt.plist = NULL;
7398 /* If this is a weak symbol, and there is a real definition, the
7399 processor independent code will have arranged for us to see the
7400 real definition first, and we can just use the same value. */
7401 if (h->u.weakdef != NULL)
7403 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7404 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7405 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7406 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7407 if (ELIMINATE_COPY_RELOCS)
7408 h->non_got_ref = h->u.weakdef->non_got_ref;
7412 /* If we are creating a shared library, we must presume that the
7413 only references to the symbol are via the global offset table.
7414 For such cases we need not do anything here; the relocations will
7415 be handled correctly by relocate_section. */
7416 if (bfd_link_pic (info))
7419 /* If there are no references to this symbol that do not use the
7420 GOT, we don't need to generate a copy reloc. */
7421 if (!h->non_got_ref)
7424 /* Don't generate a copy reloc for symbols defined in the executable. */
7425 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7427 /* If -z nocopyreloc was given, don't generate them either. */
7428 || info->nocopyreloc
7430 /* If we didn't find any dynamic relocs in read-only sections, then
7431 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7432 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7434 /* Protected variables do not work with .dynbss. The copy in
7435 .dynbss won't be used by the shared library with the protected
7436 definition for the variable. Text relocations are preferable
7437 to an incorrect program. */
7438 || h->protected_def)
7444 if (h->plt.plist != NULL)
7446 /* We should never get here, but unfortunately there are versions
7447 of gcc out there that improperly (for this ABI) put initialized
7448 function pointers, vtable refs and suchlike in read-only
7449 sections. Allow them to proceed, but warn that this might
7450 break at runtime. */
7451 info->callbacks->einfo
7452 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7453 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7454 h->root.root.string);
7457 /* This is a reference to a symbol defined by a dynamic object which
7458 is not a function. */
7460 /* We must allocate the symbol in our .dynbss section, which will
7461 become part of the .bss section of the executable. There will be
7462 an entry for this symbol in the .dynsym section. The dynamic
7463 object will contain position independent code, so all references
7464 from the dynamic object to this symbol will go through the global
7465 offset table. The dynamic linker will use the .dynsym entry to
7466 determine the address it must put in the global offset table, so
7467 both the dynamic object and the regular object will refer to the
7468 same memory location for the variable. */
7470 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7471 to copy the initial value out of the dynamic object and into the
7472 runtime process image. We need to remember the offset into the
7473 .rela.bss section we are going to use. */
7474 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7476 s = htab->elf.sdynrelro;
7477 srel = htab->elf.sreldynrelro;
7481 s = htab->elf.sdynbss;
7482 srel = htab->elf.srelbss;
7484 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7486 srel->size += sizeof (Elf64_External_Rela);
7490 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7493 /* If given a function descriptor symbol, hide both the function code
7494 sym and the descriptor. */
7496 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7497 struct elf_link_hash_entry *h,
7498 bfd_boolean force_local)
7500 struct ppc_link_hash_entry *eh;
7501 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7503 eh = (struct ppc_link_hash_entry *) h;
7504 if (eh->is_func_descriptor)
7506 struct ppc_link_hash_entry *fh = eh->oh;
7511 struct elf_link_hash_table *htab = elf_hash_table (info);
7514 /* We aren't supposed to use alloca in BFD because on
7515 systems which do not have alloca the version in libiberty
7516 calls xmalloc, which might cause the program to crash
7517 when it runs out of memory. This function doesn't have a
7518 return status, so there's no way to gracefully return an
7519 error. So cheat. We know that string[-1] can be safely
7520 accessed; It's either a string in an ELF string table,
7521 or allocated in an objalloc structure. */
7523 p = eh->elf.root.root.string - 1;
7526 fh = (struct ppc_link_hash_entry *)
7527 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7530 /* Unfortunately, if it so happens that the string we were
7531 looking for was allocated immediately before this string,
7532 then we overwrote the string terminator. That's the only
7533 reason the lookup should fail. */
7536 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7537 while (q >= eh->elf.root.root.string && *q == *p)
7539 if (q < eh->elf.root.root.string && *p == '.')
7540 fh = (struct ppc_link_hash_entry *)
7541 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7550 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7555 get_sym_h (struct elf_link_hash_entry **hp,
7556 Elf_Internal_Sym **symp,
7558 unsigned char **tls_maskp,
7559 Elf_Internal_Sym **locsymsp,
7560 unsigned long r_symndx,
7563 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7565 if (r_symndx >= symtab_hdr->sh_info)
7567 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7568 struct elf_link_hash_entry *h;
7570 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7571 h = elf_follow_link (h);
7579 if (symsecp != NULL)
7581 asection *symsec = NULL;
7582 if (h->root.type == bfd_link_hash_defined
7583 || h->root.type == bfd_link_hash_defweak)
7584 symsec = h->root.u.def.section;
7588 if (tls_maskp != NULL)
7590 struct ppc_link_hash_entry *eh;
7592 eh = (struct ppc_link_hash_entry *) h;
7593 *tls_maskp = &eh->tls_mask;
7598 Elf_Internal_Sym *sym;
7599 Elf_Internal_Sym *locsyms = *locsymsp;
7601 if (locsyms == NULL)
7603 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7604 if (locsyms == NULL)
7605 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7606 symtab_hdr->sh_info,
7607 0, NULL, NULL, NULL);
7608 if (locsyms == NULL)
7610 *locsymsp = locsyms;
7612 sym = locsyms + r_symndx;
7620 if (symsecp != NULL)
7621 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7623 if (tls_maskp != NULL)
7625 struct got_entry **lgot_ents;
7626 unsigned char *tls_mask;
7629 lgot_ents = elf_local_got_ents (ibfd);
7630 if (lgot_ents != NULL)
7632 struct plt_entry **local_plt = (struct plt_entry **)
7633 (lgot_ents + symtab_hdr->sh_info);
7634 unsigned char *lgot_masks = (unsigned char *)
7635 (local_plt + symtab_hdr->sh_info);
7636 tls_mask = &lgot_masks[r_symndx];
7638 *tls_maskp = tls_mask;
7644 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7645 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7646 type suitable for optimization, and 1 otherwise. */
7649 get_tls_mask (unsigned char **tls_maskp,
7650 unsigned long *toc_symndx,
7651 bfd_vma *toc_addend,
7652 Elf_Internal_Sym **locsymsp,
7653 const Elf_Internal_Rela *rel,
7656 unsigned long r_symndx;
7658 struct elf_link_hash_entry *h;
7659 Elf_Internal_Sym *sym;
7663 r_symndx = ELF64_R_SYM (rel->r_info);
7664 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7667 if ((*tls_maskp != NULL && **tls_maskp != 0)
7669 || ppc64_elf_section_data (sec) == NULL
7670 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7673 /* Look inside a TOC section too. */
7676 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7677 off = h->root.u.def.value;
7680 off = sym->st_value;
7681 off += rel->r_addend;
7682 BFD_ASSERT (off % 8 == 0);
7683 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7684 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7685 if (toc_symndx != NULL)
7686 *toc_symndx = r_symndx;
7687 if (toc_addend != NULL)
7688 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7689 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7691 if ((h == NULL || is_static_defined (h))
7692 && (next_r == -1 || next_r == -2))
7697 /* Find (or create) an entry in the tocsave hash table. */
7699 static struct tocsave_entry *
7700 tocsave_find (struct ppc_link_hash_table *htab,
7701 enum insert_option insert,
7702 Elf_Internal_Sym **local_syms,
7703 const Elf_Internal_Rela *irela,
7706 unsigned long r_indx;
7707 struct elf_link_hash_entry *h;
7708 Elf_Internal_Sym *sym;
7709 struct tocsave_entry ent, *p;
7711 struct tocsave_entry **slot;
7713 r_indx = ELF64_R_SYM (irela->r_info);
7714 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7716 if (ent.sec == NULL || ent.sec->output_section == NULL)
7719 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd);
7724 ent.offset = h->root.u.def.value;
7726 ent.offset = sym->st_value;
7727 ent.offset += irela->r_addend;
7729 hash = tocsave_htab_hash (&ent);
7730 slot = ((struct tocsave_entry **)
7731 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7737 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7746 /* Adjust all global syms defined in opd sections. In gcc generated
7747 code for the old ABI, these will already have been done. */
7750 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7752 struct ppc_link_hash_entry *eh;
7754 struct _opd_sec_data *opd;
7756 if (h->root.type == bfd_link_hash_indirect)
7759 if (h->root.type != bfd_link_hash_defined
7760 && h->root.type != bfd_link_hash_defweak)
7763 eh = (struct ppc_link_hash_entry *) h;
7764 if (eh->adjust_done)
7767 sym_sec = eh->elf.root.u.def.section;
7768 opd = get_opd_info (sym_sec);
7769 if (opd != NULL && opd->adjust != NULL)
7771 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7774 /* This entry has been deleted. */
7775 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7778 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7779 if (discarded_section (dsec))
7781 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7785 eh->elf.root.u.def.value = 0;
7786 eh->elf.root.u.def.section = dsec;
7789 eh->elf.root.u.def.value += adjust;
7790 eh->adjust_done = 1;
7795 /* Handles decrementing dynamic reloc counts for the reloc specified by
7796 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7797 have already been determined. */
7800 dec_dynrel_count (bfd_vma r_info,
7802 struct bfd_link_info *info,
7803 Elf_Internal_Sym **local_syms,
7804 struct elf_link_hash_entry *h,
7805 Elf_Internal_Sym *sym)
7807 enum elf_ppc64_reloc_type r_type;
7808 asection *sym_sec = NULL;
7810 /* Can this reloc be dynamic? This switch, and later tests here
7811 should be kept in sync with the code in check_relocs. */
7812 r_type = ELF64_R_TYPE (r_info);
7818 case R_PPC64_TPREL16:
7819 case R_PPC64_TPREL16_LO:
7820 case R_PPC64_TPREL16_HI:
7821 case R_PPC64_TPREL16_HA:
7822 case R_PPC64_TPREL16_DS:
7823 case R_PPC64_TPREL16_LO_DS:
7824 case R_PPC64_TPREL16_HIGH:
7825 case R_PPC64_TPREL16_HIGHA:
7826 case R_PPC64_TPREL16_HIGHER:
7827 case R_PPC64_TPREL16_HIGHERA:
7828 case R_PPC64_TPREL16_HIGHEST:
7829 case R_PPC64_TPREL16_HIGHESTA:
7830 case R_PPC64_TPREL64:
7831 case R_PPC64_DTPMOD64:
7832 case R_PPC64_DTPREL64:
7833 case R_PPC64_ADDR64:
7837 case R_PPC64_ADDR14:
7838 case R_PPC64_ADDR14_BRNTAKEN:
7839 case R_PPC64_ADDR14_BRTAKEN:
7840 case R_PPC64_ADDR16:
7841 case R_PPC64_ADDR16_DS:
7842 case R_PPC64_ADDR16_HA:
7843 case R_PPC64_ADDR16_HI:
7844 case R_PPC64_ADDR16_HIGH:
7845 case R_PPC64_ADDR16_HIGHA:
7846 case R_PPC64_ADDR16_HIGHER:
7847 case R_PPC64_ADDR16_HIGHERA:
7848 case R_PPC64_ADDR16_HIGHEST:
7849 case R_PPC64_ADDR16_HIGHESTA:
7850 case R_PPC64_ADDR16_LO:
7851 case R_PPC64_ADDR16_LO_DS:
7852 case R_PPC64_ADDR24:
7853 case R_PPC64_ADDR32:
7854 case R_PPC64_UADDR16:
7855 case R_PPC64_UADDR32:
7856 case R_PPC64_UADDR64:
7861 if (local_syms != NULL)
7863 unsigned long r_symndx;
7864 bfd *ibfd = sec->owner;
7866 r_symndx = ELF64_R_SYM (r_info);
7867 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7871 if ((bfd_link_pic (info)
7872 && (must_be_dyn_reloc (info, r_type)
7874 && (!SYMBOLIC_BIND (info, h)
7875 || h->root.type == bfd_link_hash_defweak
7876 || !h->def_regular))))
7877 || (ELIMINATE_COPY_RELOCS
7878 && !bfd_link_pic (info)
7880 && (h->root.type == bfd_link_hash_defweak
7881 || !h->def_regular)))
7888 struct elf_dyn_relocs *p;
7889 struct elf_dyn_relocs **pp;
7890 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7892 /* elf_gc_sweep may have already removed all dyn relocs associated
7893 with local syms for a given section. Also, symbol flags are
7894 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7895 report a dynreloc miscount. */
7896 if (*pp == NULL && info->gc_sections)
7899 while ((p = *pp) != NULL)
7903 if (!must_be_dyn_reloc (info, r_type))
7915 struct ppc_dyn_relocs *p;
7916 struct ppc_dyn_relocs **pp;
7918 bfd_boolean is_ifunc;
7920 if (local_syms == NULL)
7921 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7922 if (sym_sec == NULL)
7925 vpp = &elf_section_data (sym_sec)->local_dynrel;
7926 pp = (struct ppc_dyn_relocs **) vpp;
7928 if (*pp == NULL && info->gc_sections)
7931 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7932 while ((p = *pp) != NULL)
7934 if (p->sec == sec && p->ifunc == is_ifunc)
7945 /* xgettext:c-format */
7946 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7948 bfd_set_error (bfd_error_bad_value);
7952 /* Remove unused Official Procedure Descriptor entries. Currently we
7953 only remove those associated with functions in discarded link-once
7954 sections, or weakly defined functions that have been overridden. It
7955 would be possible to remove many more entries for statically linked
7959 ppc64_elf_edit_opd (struct bfd_link_info *info)
7962 bfd_boolean some_edited = FALSE;
7963 asection *need_pad = NULL;
7964 struct ppc_link_hash_table *htab;
7966 htab = ppc_hash_table (info);
7970 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7973 Elf_Internal_Rela *relstart, *rel, *relend;
7974 Elf_Internal_Shdr *symtab_hdr;
7975 Elf_Internal_Sym *local_syms;
7976 struct _opd_sec_data *opd;
7977 bfd_boolean need_edit, add_aux_fields, broken;
7978 bfd_size_type cnt_16b = 0;
7980 if (!is_ppc64_elf (ibfd))
7983 sec = bfd_get_section_by_name (ibfd, ".opd");
7984 if (sec == NULL || sec->size == 0)
7987 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7990 if (sec->output_section == bfd_abs_section_ptr)
7993 /* Look through the section relocs. */
7994 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7998 symtab_hdr = &elf_symtab_hdr (ibfd);
8000 /* Read the relocations. */
8001 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8003 if (relstart == NULL)
8006 /* First run through the relocs to check they are sane, and to
8007 determine whether we need to edit this opd section. */
8011 relend = relstart + sec->reloc_count;
8012 for (rel = relstart; rel < relend; )
8014 enum elf_ppc64_reloc_type r_type;
8015 unsigned long r_symndx;
8017 struct elf_link_hash_entry *h;
8018 Elf_Internal_Sym *sym;
8021 /* .opd contains an array of 16 or 24 byte entries. We're
8022 only interested in the reloc pointing to a function entry
8024 offset = rel->r_offset;
8025 if (rel + 1 == relend
8026 || rel[1].r_offset != offset + 8)
8028 /* If someone messes with .opd alignment then after a
8029 "ld -r" we might have padding in the middle of .opd.
8030 Also, there's nothing to prevent someone putting
8031 something silly in .opd with the assembler. No .opd
8032 optimization for them! */
8035 (_("%B: .opd is not a regular array of opd entries"), ibfd);
8040 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
8041 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
8044 /* xgettext:c-format */
8045 (_("%B: unexpected reloc type %u in .opd section"),
8051 r_symndx = ELF64_R_SYM (rel->r_info);
8052 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8056 if (sym_sec == NULL || sym_sec->owner == NULL)
8058 const char *sym_name;
8060 sym_name = h->root.root.string;
8062 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8066 /* xgettext:c-format */
8067 (_("%B: undefined sym `%s' in .opd section"),
8073 /* opd entries are always for functions defined in the
8074 current input bfd. If the symbol isn't defined in the
8075 input bfd, then we won't be using the function in this
8076 bfd; It must be defined in a linkonce section in another
8077 bfd, or is weak. It's also possible that we are
8078 discarding the function due to a linker script /DISCARD/,
8079 which we test for via the output_section. */
8080 if (sym_sec->owner != ibfd
8081 || sym_sec->output_section == bfd_abs_section_ptr)
8085 if (rel + 1 == relend
8086 || (rel + 2 < relend
8087 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
8092 if (sec->size == offset + 24)
8097 if (sec->size == offset + 16)
8104 else if (rel + 1 < relend
8105 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8106 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8108 if (rel[0].r_offset == offset + 16)
8110 else if (rel[0].r_offset != offset + 24)
8117 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8119 if (!broken && (need_edit || add_aux_fields))
8121 Elf_Internal_Rela *write_rel;
8122 Elf_Internal_Shdr *rel_hdr;
8123 bfd_byte *rptr, *wptr;
8124 bfd_byte *new_contents;
8127 new_contents = NULL;
8128 amt = OPD_NDX (sec->size) * sizeof (long);
8129 opd = &ppc64_elf_section_data (sec)->u.opd;
8130 opd->adjust = bfd_zalloc (sec->owner, amt);
8131 if (opd->adjust == NULL)
8134 /* This seems a waste of time as input .opd sections are all
8135 zeros as generated by gcc, but I suppose there's no reason
8136 this will always be so. We might start putting something in
8137 the third word of .opd entries. */
8138 if ((sec->flags & SEC_IN_MEMORY) == 0)
8141 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8146 if (local_syms != NULL
8147 && symtab_hdr->contents != (unsigned char *) local_syms)
8149 if (elf_section_data (sec)->relocs != relstart)
8153 sec->contents = loc;
8154 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8157 elf_section_data (sec)->relocs = relstart;
8159 new_contents = sec->contents;
8162 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8163 if (new_contents == NULL)
8167 wptr = new_contents;
8168 rptr = sec->contents;
8169 write_rel = relstart;
8170 for (rel = relstart; rel < relend; )
8172 unsigned long r_symndx;
8174 struct elf_link_hash_entry *h;
8175 struct ppc_link_hash_entry *fdh = NULL;
8176 Elf_Internal_Sym *sym;
8178 Elf_Internal_Rela *next_rel;
8181 r_symndx = ELF64_R_SYM (rel->r_info);
8182 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8187 if (next_rel + 1 == relend
8188 || (next_rel + 2 < relend
8189 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8192 /* See if the .opd entry is full 24 byte or
8193 16 byte (with fd_aux entry overlapped with next
8196 if (next_rel == relend)
8198 if (sec->size == rel->r_offset + 16)
8201 else if (next_rel->r_offset == rel->r_offset + 16)
8205 && h->root.root.string[0] == '.')
8207 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8210 fdh = ppc_follow_link (fdh);
8211 if (fdh->elf.root.type != bfd_link_hash_defined
8212 && fdh->elf.root.type != bfd_link_hash_defweak)
8217 skip = (sym_sec->owner != ibfd
8218 || sym_sec->output_section == bfd_abs_section_ptr);
8221 if (fdh != NULL && sym_sec->owner == ibfd)
8223 /* Arrange for the function descriptor sym
8225 fdh->elf.root.u.def.value = 0;
8226 fdh->elf.root.u.def.section = sym_sec;
8228 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8230 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8235 if (!dec_dynrel_count (rel->r_info, sec, info,
8239 if (++rel == next_rel)
8242 r_symndx = ELF64_R_SYM (rel->r_info);
8243 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8250 /* We'll be keeping this opd entry. */
8255 /* Redefine the function descriptor symbol to
8256 this location in the opd section. It is
8257 necessary to update the value here rather
8258 than using an array of adjustments as we do
8259 for local symbols, because various places
8260 in the generic ELF code use the value
8261 stored in u.def.value. */
8262 fdh->elf.root.u.def.value = wptr - new_contents;
8263 fdh->adjust_done = 1;
8266 /* Local syms are a bit tricky. We could
8267 tweak them as they can be cached, but
8268 we'd need to look through the local syms
8269 for the function descriptor sym which we
8270 don't have at the moment. So keep an
8271 array of adjustments. */
8272 adjust = (wptr - new_contents) - (rptr - sec->contents);
8273 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8276 memcpy (wptr, rptr, opd_ent_size);
8277 wptr += opd_ent_size;
8278 if (add_aux_fields && opd_ent_size == 16)
8280 memset (wptr, '\0', 8);
8284 /* We need to adjust any reloc offsets to point to the
8286 for ( ; rel != next_rel; ++rel)
8288 rel->r_offset += adjust;
8289 if (write_rel != rel)
8290 memcpy (write_rel, rel, sizeof (*rel));
8295 rptr += opd_ent_size;
8298 sec->size = wptr - new_contents;
8299 sec->reloc_count = write_rel - relstart;
8302 free (sec->contents);
8303 sec->contents = new_contents;
8306 /* Fudge the header size too, as this is used later in
8307 elf_bfd_final_link if we are emitting relocs. */
8308 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8309 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8312 else if (elf_section_data (sec)->relocs != relstart)
8315 if (local_syms != NULL
8316 && symtab_hdr->contents != (unsigned char *) local_syms)
8318 if (!info->keep_memory)
8321 symtab_hdr->contents = (unsigned char *) local_syms;
8326 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8328 /* If we are doing a final link and the last .opd entry is just 16 byte
8329 long, add a 8 byte padding after it. */
8330 if (need_pad != NULL && !bfd_link_relocatable (info))
8334 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8336 BFD_ASSERT (need_pad->size > 0);
8338 p = bfd_malloc (need_pad->size + 8);
8342 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8343 p, 0, need_pad->size))
8346 need_pad->contents = p;
8347 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8351 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8355 need_pad->contents = p;
8358 memset (need_pad->contents + need_pad->size, 0, 8);
8359 need_pad->size += 8;
8365 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8368 ppc64_elf_tls_setup (struct bfd_link_info *info)
8370 struct ppc_link_hash_table *htab;
8372 htab = ppc_hash_table (info);
8376 if (abiversion (info->output_bfd) == 1)
8379 if (htab->params->no_multi_toc)
8380 htab->do_multi_toc = 0;
8381 else if (!htab->do_multi_toc)
8382 htab->params->no_multi_toc = 1;
8384 /* Default to --no-plt-localentry, as this option can cause problems
8385 with symbol interposition. For example, glibc libpthread.so and
8386 libc.so duplicate many pthread symbols, with a fallback
8387 implementation in libc.so. In some cases the fallback does more
8388 work than the pthread implementation. __pthread_condattr_destroy
8389 is one such symbol: the libpthread.so implementation is
8390 localentry:0 while the libc.so implementation is localentry:8.
8391 An app that "cleverly" uses dlopen to only load necessary
8392 libraries at runtime may omit loading libpthread.so when not
8393 running multi-threaded, which then results in the libc.so
8394 fallback symbols being used and ld.so complaining. Now there
8395 are workarounds in ld (see non_zero_localentry) to detect the
8396 pthread situation, but that may not be the only case where
8397 --plt-localentry can cause trouble. */
8398 if (htab->params->plt_localentry0 < 0)
8399 htab->params->plt_localentry0 = 0;
8400 if (htab->params->plt_localentry0
8401 && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26",
8402 FALSE, FALSE, FALSE) == NULL)
8403 info->callbacks->einfo
8404 (_("%P: warning: --plt-localentry is especially dangerous without "
8405 "ld.so support to detect ABI violations.\n"));
8407 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8408 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8409 FALSE, FALSE, TRUE));
8410 /* Move dynamic linking info to the function descriptor sym. */
8411 if (htab->tls_get_addr != NULL)
8412 func_desc_adjust (&htab->tls_get_addr->elf, info);
8413 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8414 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8415 FALSE, FALSE, TRUE));
8416 if (htab->params->tls_get_addr_opt)
8418 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8420 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8421 FALSE, FALSE, TRUE);
8423 func_desc_adjust (opt, info);
8424 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8425 FALSE, FALSE, TRUE);
8427 && (opt_fd->root.type == bfd_link_hash_defined
8428 || opt_fd->root.type == bfd_link_hash_defweak))
8430 /* If glibc supports an optimized __tls_get_addr call stub,
8431 signalled by the presence of __tls_get_addr_opt, and we'll
8432 be calling __tls_get_addr via a plt call stub, then
8433 make __tls_get_addr point to __tls_get_addr_opt. */
8434 tga_fd = &htab->tls_get_addr_fd->elf;
8435 if (htab->elf.dynamic_sections_created
8437 && (tga_fd->type == STT_FUNC
8438 || tga_fd->needs_plt)
8439 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8440 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))
8442 struct plt_entry *ent;
8444 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8445 if (ent->plt.refcount > 0)
8449 tga_fd->root.type = bfd_link_hash_indirect;
8450 tga_fd->root.u.i.link = &opt_fd->root;
8451 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8453 if (opt_fd->dynindx != -1)
8455 /* Use __tls_get_addr_opt in dynamic relocations. */
8456 opt_fd->dynindx = -1;
8457 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8458 opt_fd->dynstr_index);
8459 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8462 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8463 tga = &htab->tls_get_addr->elf;
8464 if (opt != NULL && tga != NULL)
8466 tga->root.type = bfd_link_hash_indirect;
8467 tga->root.u.i.link = &opt->root;
8468 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8470 _bfd_elf_link_hash_hide_symbol (info, opt,
8472 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8474 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8475 htab->tls_get_addr_fd->is_func_descriptor = 1;
8476 if (htab->tls_get_addr != NULL)
8478 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8479 htab->tls_get_addr->is_func = 1;
8484 else if (htab->params->tls_get_addr_opt < 0)
8485 htab->params->tls_get_addr_opt = 0;
8487 return _bfd_elf_tls_setup (info->output_bfd, info);
8490 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8494 branch_reloc_hash_match (const bfd *ibfd,
8495 const Elf_Internal_Rela *rel,
8496 const struct ppc_link_hash_entry *hash1,
8497 const struct ppc_link_hash_entry *hash2)
8499 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8500 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8501 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8503 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8505 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8506 struct elf_link_hash_entry *h;
8508 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8509 h = elf_follow_link (h);
8510 if (h == &hash1->elf || h == &hash2->elf)
8516 /* Run through all the TLS relocs looking for optimization
8517 opportunities. The linker has been hacked (see ppc64elf.em) to do
8518 a preliminary section layout so that we know the TLS segment
8519 offsets. We can't optimize earlier because some optimizations need
8520 to know the tp offset, and we need to optimize before allocating
8521 dynamic relocations. */
8524 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8528 struct ppc_link_hash_table *htab;
8529 unsigned char *toc_ref;
8532 if (!bfd_link_executable (info))
8535 htab = ppc_hash_table (info);
8539 /* Make two passes over the relocs. On the first pass, mark toc
8540 entries involved with tls relocs, and check that tls relocs
8541 involved in setting up a tls_get_addr call are indeed followed by
8542 such a call. If they are not, we can't do any tls optimization.
8543 On the second pass twiddle tls_mask flags to notify
8544 relocate_section that optimization can be done, and adjust got
8545 and plt refcounts. */
8547 for (pass = 0; pass < 2; ++pass)
8548 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8550 Elf_Internal_Sym *locsyms = NULL;
8551 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8553 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8554 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8556 Elf_Internal_Rela *relstart, *rel, *relend;
8557 bfd_boolean found_tls_get_addr_arg = 0;
8559 /* Read the relocations. */
8560 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8562 if (relstart == NULL)
8568 relend = relstart + sec->reloc_count;
8569 for (rel = relstart; rel < relend; rel++)
8571 enum elf_ppc64_reloc_type r_type;
8572 unsigned long r_symndx;
8573 struct elf_link_hash_entry *h;
8574 Elf_Internal_Sym *sym;
8576 unsigned char *tls_mask;
8577 unsigned char tls_set, tls_clear, tls_type = 0;
8579 bfd_boolean ok_tprel, is_local;
8580 long toc_ref_index = 0;
8581 int expecting_tls_get_addr = 0;
8582 bfd_boolean ret = FALSE;
8584 r_symndx = ELF64_R_SYM (rel->r_info);
8585 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8589 if (elf_section_data (sec)->relocs != relstart)
8591 if (toc_ref != NULL)
8594 && (elf_symtab_hdr (ibfd).contents
8595 != (unsigned char *) locsyms))
8602 if (h->root.type == bfd_link_hash_defined
8603 || h->root.type == bfd_link_hash_defweak)
8604 value = h->root.u.def.value;
8605 else if (h->root.type == bfd_link_hash_undefweak)
8609 found_tls_get_addr_arg = 0;
8614 /* Symbols referenced by TLS relocs must be of type
8615 STT_TLS. So no need for .opd local sym adjust. */
8616 value = sym->st_value;
8625 && h->root.type == bfd_link_hash_undefweak)
8627 else if (sym_sec != NULL
8628 && sym_sec->output_section != NULL)
8630 value += sym_sec->output_offset;
8631 value += sym_sec->output_section->vma;
8632 value -= htab->elf.tls_sec->vma;
8633 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8634 < (bfd_vma) 1 << 32);
8638 r_type = ELF64_R_TYPE (rel->r_info);
8639 /* If this section has old-style __tls_get_addr calls
8640 without marker relocs, then check that each
8641 __tls_get_addr call reloc is preceded by a reloc
8642 that conceivably belongs to the __tls_get_addr arg
8643 setup insn. If we don't find matching arg setup
8644 relocs, don't do any tls optimization. */
8646 && sec->has_tls_get_addr_call
8648 && (h == &htab->tls_get_addr->elf
8649 || h == &htab->tls_get_addr_fd->elf)
8650 && !found_tls_get_addr_arg
8651 && is_branch_reloc (r_type))
8653 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8654 "TLS optimization disabled\n"),
8655 ibfd, sec, rel->r_offset);
8660 found_tls_get_addr_arg = 0;
8663 case R_PPC64_GOT_TLSLD16:
8664 case R_PPC64_GOT_TLSLD16_LO:
8665 expecting_tls_get_addr = 1;
8666 found_tls_get_addr_arg = 1;
8669 case R_PPC64_GOT_TLSLD16_HI:
8670 case R_PPC64_GOT_TLSLD16_HA:
8671 /* These relocs should never be against a symbol
8672 defined in a shared lib. Leave them alone if
8673 that turns out to be the case. */
8680 tls_type = TLS_TLS | TLS_LD;
8683 case R_PPC64_GOT_TLSGD16:
8684 case R_PPC64_GOT_TLSGD16_LO:
8685 expecting_tls_get_addr = 1;
8686 found_tls_get_addr_arg = 1;
8689 case R_PPC64_GOT_TLSGD16_HI:
8690 case R_PPC64_GOT_TLSGD16_HA:
8696 tls_set = TLS_TLS | TLS_TPRELGD;
8698 tls_type = TLS_TLS | TLS_GD;
8701 case R_PPC64_GOT_TPREL16_DS:
8702 case R_PPC64_GOT_TPREL16_LO_DS:
8703 case R_PPC64_GOT_TPREL16_HI:
8704 case R_PPC64_GOT_TPREL16_HA:
8709 tls_clear = TLS_TPREL;
8710 tls_type = TLS_TLS | TLS_TPREL;
8717 found_tls_get_addr_arg = 1;
8722 case R_PPC64_TOC16_LO:
8723 if (sym_sec == NULL || sym_sec != toc)
8726 /* Mark this toc entry as referenced by a TLS
8727 code sequence. We can do that now in the
8728 case of R_PPC64_TLS, and after checking for
8729 tls_get_addr for the TOC16 relocs. */
8730 if (toc_ref == NULL)
8731 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8732 if (toc_ref == NULL)
8736 value = h->root.u.def.value;
8738 value = sym->st_value;
8739 value += rel->r_addend;
8742 BFD_ASSERT (value < toc->size
8743 && toc->output_offset % 8 == 0);
8744 toc_ref_index = (value + toc->output_offset) / 8;
8745 if (r_type == R_PPC64_TLS
8746 || r_type == R_PPC64_TLSGD
8747 || r_type == R_PPC64_TLSLD)
8749 toc_ref[toc_ref_index] = 1;
8753 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8758 expecting_tls_get_addr = 2;
8761 case R_PPC64_TPREL64:
8765 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8770 tls_set = TLS_EXPLICIT;
8771 tls_clear = TLS_TPREL;
8776 case R_PPC64_DTPMOD64:
8780 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8782 if (rel + 1 < relend
8784 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8785 && rel[1].r_offset == rel->r_offset + 8)
8789 tls_set = TLS_EXPLICIT | TLS_GD;
8792 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8801 tls_set = TLS_EXPLICIT;
8812 if (!expecting_tls_get_addr
8813 || !sec->has_tls_get_addr_call)
8816 if (rel + 1 < relend
8817 && branch_reloc_hash_match (ibfd, rel + 1,
8819 htab->tls_get_addr_fd))
8821 if (expecting_tls_get_addr == 2)
8823 /* Check for toc tls entries. */
8824 unsigned char *toc_tls;
8827 retval = get_tls_mask (&toc_tls, NULL, NULL,
8832 if (toc_tls != NULL)
8834 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8835 found_tls_get_addr_arg = 1;
8837 toc_ref[toc_ref_index] = 1;
8843 if (expecting_tls_get_addr != 1)
8846 /* Uh oh, we didn't find the expected call. We
8847 could just mark this symbol to exclude it
8848 from tls optimization but it's safer to skip
8849 the entire optimization. */
8850 /* xgettext:c-format */
8851 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8852 "TLS optimization disabled\n"),
8853 ibfd, sec, rel->r_offset);
8858 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8860 struct plt_entry *ent;
8861 for (ent = htab->tls_get_addr->elf.plt.plist;
8864 if (ent->addend == 0)
8866 if (ent->plt.refcount > 0)
8868 ent->plt.refcount -= 1;
8869 expecting_tls_get_addr = 0;
8875 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8877 struct plt_entry *ent;
8878 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8881 if (ent->addend == 0)
8883 if (ent->plt.refcount > 0)
8884 ent->plt.refcount -= 1;
8892 if ((tls_set & TLS_EXPLICIT) == 0)
8894 struct got_entry *ent;
8896 /* Adjust got entry for this reloc. */
8900 ent = elf_local_got_ents (ibfd)[r_symndx];
8902 for (; ent != NULL; ent = ent->next)
8903 if (ent->addend == rel->r_addend
8904 && ent->owner == ibfd
8905 && ent->tls_type == tls_type)
8912 /* We managed to get rid of a got entry. */
8913 if (ent->got.refcount > 0)
8914 ent->got.refcount -= 1;
8919 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8920 we'll lose one or two dyn relocs. */
8921 if (!dec_dynrel_count (rel->r_info, sec, info,
8925 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8927 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8933 *tls_mask |= tls_set;
8934 *tls_mask &= ~tls_clear;
8937 if (elf_section_data (sec)->relocs != relstart)
8942 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8944 if (!info->keep_memory)
8947 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8951 if (toc_ref != NULL)
8953 htab->do_tls_opt = 1;
8957 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8958 the values of any global symbols in a toc section that has been
8959 edited. Globals in toc sections should be a rarity, so this function
8960 sets a flag if any are found in toc sections other than the one just
8961 edited, so that further hash table traversals can be avoided. */
8963 struct adjust_toc_info
8966 unsigned long *skip;
8967 bfd_boolean global_toc_syms;
8970 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8973 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8975 struct ppc_link_hash_entry *eh;
8976 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8979 if (h->root.type != bfd_link_hash_defined
8980 && h->root.type != bfd_link_hash_defweak)
8983 eh = (struct ppc_link_hash_entry *) h;
8984 if (eh->adjust_done)
8987 if (eh->elf.root.u.def.section == toc_inf->toc)
8989 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8990 i = toc_inf->toc->rawsize >> 3;
8992 i = eh->elf.root.u.def.value >> 3;
8994 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8997 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
9000 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
9001 eh->elf.root.u.def.value = (bfd_vma) i << 3;
9004 eh->elf.root.u.def.value -= toc_inf->skip[i];
9005 eh->adjust_done = 1;
9007 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
9008 toc_inf->global_toc_syms = TRUE;
9013 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
9014 on a _LO variety toc/got reloc. */
9017 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
9019 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
9020 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
9021 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
9022 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
9023 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
9024 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
9025 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
9026 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
9027 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
9028 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
9029 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
9030 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
9031 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
9032 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
9033 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
9034 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
9035 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
9036 /* Exclude lfqu by testing reloc. If relocs are ever
9037 defined for the reduced D field in psq_lu then those
9038 will need testing too. */
9039 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9040 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
9042 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
9043 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
9044 /* Exclude stfqu. psq_stu as above for psq_lu. */
9045 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
9046 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
9047 && (insn & 1) == 0));
9050 /* Examine all relocs referencing .toc sections in order to remove
9051 unused .toc entries. */
9054 ppc64_elf_edit_toc (struct bfd_link_info *info)
9057 struct adjust_toc_info toc_inf;
9058 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9060 htab->do_toc_opt = 1;
9061 toc_inf.global_toc_syms = TRUE;
9062 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9064 asection *toc, *sec;
9065 Elf_Internal_Shdr *symtab_hdr;
9066 Elf_Internal_Sym *local_syms;
9067 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
9068 unsigned long *skip, *drop;
9069 unsigned char *used;
9070 unsigned char *keep, last, some_unused;
9072 if (!is_ppc64_elf (ibfd))
9075 toc = bfd_get_section_by_name (ibfd, ".toc");
9078 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
9079 || discarded_section (toc))
9084 symtab_hdr = &elf_symtab_hdr (ibfd);
9086 /* Look at sections dropped from the final link. */
9089 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9091 if (sec->reloc_count == 0
9092 || !discarded_section (sec)
9093 || get_opd_info (sec)
9094 || (sec->flags & SEC_ALLOC) == 0
9095 || (sec->flags & SEC_DEBUGGING) != 0)
9098 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
9099 if (relstart == NULL)
9102 /* Run through the relocs to see which toc entries might be
9104 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9106 enum elf_ppc64_reloc_type r_type;
9107 unsigned long r_symndx;
9109 struct elf_link_hash_entry *h;
9110 Elf_Internal_Sym *sym;
9113 r_type = ELF64_R_TYPE (rel->r_info);
9120 case R_PPC64_TOC16_LO:
9121 case R_PPC64_TOC16_HI:
9122 case R_PPC64_TOC16_HA:
9123 case R_PPC64_TOC16_DS:
9124 case R_PPC64_TOC16_LO_DS:
9128 r_symndx = ELF64_R_SYM (rel->r_info);
9129 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9137 val = h->root.u.def.value;
9139 val = sym->st_value;
9140 val += rel->r_addend;
9142 if (val >= toc->size)
9145 /* Anything in the toc ought to be aligned to 8 bytes.
9146 If not, don't mark as unused. */
9152 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9157 skip[val >> 3] = ref_from_discarded;
9160 if (elf_section_data (sec)->relocs != relstart)
9164 /* For largetoc loads of address constants, we can convert
9165 . addis rx,2,addr@got@ha
9166 . ld ry,addr@got@l(rx)
9168 . addis rx,2,addr@toc@ha
9169 . addi ry,rx,addr@toc@l
9170 when addr is within 2G of the toc pointer. This then means
9171 that the word storing "addr" in the toc is no longer needed. */
9173 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9174 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9175 && toc->reloc_count != 0)
9177 /* Read toc relocs. */
9178 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9180 if (toc_relocs == NULL)
9183 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9185 enum elf_ppc64_reloc_type r_type;
9186 unsigned long r_symndx;
9188 struct elf_link_hash_entry *h;
9189 Elf_Internal_Sym *sym;
9192 r_type = ELF64_R_TYPE (rel->r_info);
9193 if (r_type != R_PPC64_ADDR64)
9196 r_symndx = ELF64_R_SYM (rel->r_info);
9197 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9202 || sym_sec->output_section == NULL
9203 || discarded_section (sym_sec))
9206 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9211 if (h->type == STT_GNU_IFUNC)
9213 val = h->root.u.def.value;
9217 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9219 val = sym->st_value;
9221 val += rel->r_addend;
9222 val += sym_sec->output_section->vma + sym_sec->output_offset;
9224 /* We don't yet know the exact toc pointer value, but we
9225 know it will be somewhere in the toc section. Don't
9226 optimize if the difference from any possible toc
9227 pointer is outside [ff..f80008000, 7fff7fff]. */
9228 addr = toc->output_section->vma + TOC_BASE_OFF;
9229 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9232 addr = toc->output_section->vma + toc->output_section->rawsize;
9233 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9238 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9243 skip[rel->r_offset >> 3]
9244 |= can_optimize | ((rel - toc_relocs) << 2);
9251 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9255 if (local_syms != NULL
9256 && symtab_hdr->contents != (unsigned char *) local_syms)
9260 && elf_section_data (sec)->relocs != relstart)
9262 if (toc_relocs != NULL
9263 && elf_section_data (toc)->relocs != toc_relocs)
9270 /* Now check all kept sections that might reference the toc.
9271 Check the toc itself last. */
9272 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9275 sec = (sec == toc ? NULL
9276 : sec->next == NULL ? toc
9277 : sec->next == toc && toc->next ? toc->next
9282 if (sec->reloc_count == 0
9283 || discarded_section (sec)
9284 || get_opd_info (sec)
9285 || (sec->flags & SEC_ALLOC) == 0
9286 || (sec->flags & SEC_DEBUGGING) != 0)
9289 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9291 if (relstart == NULL)
9297 /* Mark toc entries referenced as used. */
9301 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9303 enum elf_ppc64_reloc_type r_type;
9304 unsigned long r_symndx;
9306 struct elf_link_hash_entry *h;
9307 Elf_Internal_Sym *sym;
9309 enum {no_check, check_lo, check_ha} insn_check;
9311 r_type = ELF64_R_TYPE (rel->r_info);
9315 insn_check = no_check;
9318 case R_PPC64_GOT_TLSLD16_HA:
9319 case R_PPC64_GOT_TLSGD16_HA:
9320 case R_PPC64_GOT_TPREL16_HA:
9321 case R_PPC64_GOT_DTPREL16_HA:
9322 case R_PPC64_GOT16_HA:
9323 case R_PPC64_TOC16_HA:
9324 insn_check = check_ha;
9327 case R_PPC64_GOT_TLSLD16_LO:
9328 case R_PPC64_GOT_TLSGD16_LO:
9329 case R_PPC64_GOT_TPREL16_LO_DS:
9330 case R_PPC64_GOT_DTPREL16_LO_DS:
9331 case R_PPC64_GOT16_LO:
9332 case R_PPC64_GOT16_LO_DS:
9333 case R_PPC64_TOC16_LO:
9334 case R_PPC64_TOC16_LO_DS:
9335 insn_check = check_lo;
9339 if (insn_check != no_check)
9341 bfd_vma off = rel->r_offset & ~3;
9342 unsigned char buf[4];
9345 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9350 insn = bfd_get_32 (ibfd, buf);
9351 if (insn_check == check_lo
9352 ? !ok_lo_toc_insn (insn, r_type)
9353 : ((insn & ((0x3f << 26) | 0x1f << 16))
9354 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9358 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9359 sprintf (str, "%#08x", insn);
9360 info->callbacks->einfo
9361 /* xgettext:c-format */
9362 (_("%H: toc optimization is not supported for"
9363 " %s instruction.\n"),
9364 ibfd, sec, rel->r_offset & ~3, str);
9371 case R_PPC64_TOC16_LO:
9372 case R_PPC64_TOC16_HI:
9373 case R_PPC64_TOC16_HA:
9374 case R_PPC64_TOC16_DS:
9375 case R_PPC64_TOC16_LO_DS:
9376 /* In case we're taking addresses of toc entries. */
9377 case R_PPC64_ADDR64:
9384 r_symndx = ELF64_R_SYM (rel->r_info);
9385 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9396 val = h->root.u.def.value;
9398 val = sym->st_value;
9399 val += rel->r_addend;
9401 if (val >= toc->size)
9404 if ((skip[val >> 3] & can_optimize) != 0)
9411 case R_PPC64_TOC16_HA:
9414 case R_PPC64_TOC16_LO_DS:
9415 off = rel->r_offset;
9416 off += (bfd_big_endian (ibfd) ? -2 : 3);
9417 if (!bfd_get_section_contents (ibfd, sec, &opc,
9423 if ((opc & (0x3f << 2)) == (58u << 2))
9428 /* Wrong sort of reloc, or not a ld. We may
9429 as well clear ref_from_discarded too. */
9436 /* For the toc section, we only mark as used if this
9437 entry itself isn't unused. */
9438 else if ((used[rel->r_offset >> 3]
9439 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9442 /* Do all the relocs again, to catch reference
9451 if (elf_section_data (sec)->relocs != relstart)
9455 /* Merge the used and skip arrays. Assume that TOC
9456 doublewords not appearing as either used or unused belong
9457 to an entry more than one doubleword in size. */
9458 for (drop = skip, keep = used, last = 0, some_unused = 0;
9459 drop < skip + (toc->size + 7) / 8;
9464 *drop &= ~ref_from_discarded;
9465 if ((*drop & can_optimize) != 0)
9469 else if ((*drop & ref_from_discarded) != 0)
9472 last = ref_from_discarded;
9482 bfd_byte *contents, *src;
9484 Elf_Internal_Sym *sym;
9485 bfd_boolean local_toc_syms = FALSE;
9487 /* Shuffle the toc contents, and at the same time convert the
9488 skip array from booleans into offsets. */
9489 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9492 elf_section_data (toc)->this_hdr.contents = contents;
9494 for (src = contents, off = 0, drop = skip;
9495 src < contents + toc->size;
9498 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9503 memcpy (src - off, src, 8);
9507 toc->rawsize = toc->size;
9508 toc->size = src - contents - off;
9510 /* Adjust addends for relocs against the toc section sym,
9511 and optimize any accesses we can. */
9512 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9514 if (sec->reloc_count == 0
9515 || discarded_section (sec))
9518 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9520 if (relstart == NULL)
9523 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9525 enum elf_ppc64_reloc_type r_type;
9526 unsigned long r_symndx;
9528 struct elf_link_hash_entry *h;
9531 r_type = ELF64_R_TYPE (rel->r_info);
9538 case R_PPC64_TOC16_LO:
9539 case R_PPC64_TOC16_HI:
9540 case R_PPC64_TOC16_HA:
9541 case R_PPC64_TOC16_DS:
9542 case R_PPC64_TOC16_LO_DS:
9543 case R_PPC64_ADDR64:
9547 r_symndx = ELF64_R_SYM (rel->r_info);
9548 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9556 val = h->root.u.def.value;
9559 val = sym->st_value;
9561 local_toc_syms = TRUE;
9564 val += rel->r_addend;
9566 if (val > toc->rawsize)
9568 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9570 else if ((skip[val >> 3] & can_optimize) != 0)
9572 Elf_Internal_Rela *tocrel
9573 = toc_relocs + (skip[val >> 3] >> 2);
9574 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9578 case R_PPC64_TOC16_HA:
9579 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9582 case R_PPC64_TOC16_LO_DS:
9583 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9587 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9589 info->callbacks->einfo
9590 /* xgettext:c-format */
9591 (_("%H: %s references "
9592 "optimized away TOC entry\n"),
9593 ibfd, sec, rel->r_offset,
9594 ppc64_elf_howto_table[r_type]->name);
9595 bfd_set_error (bfd_error_bad_value);
9598 rel->r_addend = tocrel->r_addend;
9599 elf_section_data (sec)->relocs = relstart;
9603 if (h != NULL || sym->st_value != 0)
9606 rel->r_addend -= skip[val >> 3];
9607 elf_section_data (sec)->relocs = relstart;
9610 if (elf_section_data (sec)->relocs != relstart)
9614 /* We shouldn't have local or global symbols defined in the TOC,
9615 but handle them anyway. */
9616 if (local_syms != NULL)
9617 for (sym = local_syms;
9618 sym < local_syms + symtab_hdr->sh_info;
9620 if (sym->st_value != 0
9621 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9625 if (sym->st_value > toc->rawsize)
9626 i = toc->rawsize >> 3;
9628 i = sym->st_value >> 3;
9630 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9634 (_("%s defined on removed toc entry"),
9635 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9638 while ((skip[i] & (ref_from_discarded | can_optimize)));
9639 sym->st_value = (bfd_vma) i << 3;
9642 sym->st_value -= skip[i];
9643 symtab_hdr->contents = (unsigned char *) local_syms;
9646 /* Adjust any global syms defined in this toc input section. */
9647 if (toc_inf.global_toc_syms)
9650 toc_inf.skip = skip;
9651 toc_inf.global_toc_syms = FALSE;
9652 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9656 if (toc->reloc_count != 0)
9658 Elf_Internal_Shdr *rel_hdr;
9659 Elf_Internal_Rela *wrel;
9662 /* Remove unused toc relocs, and adjust those we keep. */
9663 if (toc_relocs == NULL)
9664 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9666 if (toc_relocs == NULL)
9670 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9671 if ((skip[rel->r_offset >> 3]
9672 & (ref_from_discarded | can_optimize)) == 0)
9674 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9675 wrel->r_info = rel->r_info;
9676 wrel->r_addend = rel->r_addend;
9679 else if (!dec_dynrel_count (rel->r_info, toc, info,
9680 &local_syms, NULL, NULL))
9683 elf_section_data (toc)->relocs = toc_relocs;
9684 toc->reloc_count = wrel - toc_relocs;
9685 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9686 sz = rel_hdr->sh_entsize;
9687 rel_hdr->sh_size = toc->reloc_count * sz;
9690 else if (toc_relocs != NULL
9691 && elf_section_data (toc)->relocs != toc_relocs)
9694 if (local_syms != NULL
9695 && symtab_hdr->contents != (unsigned char *) local_syms)
9697 if (!info->keep_memory)
9700 symtab_hdr->contents = (unsigned char *) local_syms;
9708 /* Return true iff input section I references the TOC using
9709 instructions limited to +/-32k offsets. */
9712 ppc64_elf_has_small_toc_reloc (asection *i)
9714 return (is_ppc64_elf (i->owner)
9715 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9718 /* Allocate space for one GOT entry. */
9721 allocate_got (struct elf_link_hash_entry *h,
9722 struct bfd_link_info *info,
9723 struct got_entry *gent)
9725 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9726 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9727 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9729 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9730 ? 2 : 1) * sizeof (Elf64_External_Rela);
9731 asection *got = ppc64_elf_tdata (gent->owner)->got;
9733 gent->got.offset = got->size;
9734 got->size += entsize;
9736 if (h->type == STT_GNU_IFUNC)
9738 htab->elf.irelplt->size += rentsize;
9739 htab->got_reli_size += rentsize;
9741 else if ((bfd_link_pic (info)
9742 || (htab->elf.dynamic_sections_created
9744 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9745 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9747 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9748 relgot->size += rentsize;
9752 /* This function merges got entries in the same toc group. */
9755 merge_got_entries (struct got_entry **pent)
9757 struct got_entry *ent, *ent2;
9759 for (ent = *pent; ent != NULL; ent = ent->next)
9760 if (!ent->is_indirect)
9761 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9762 if (!ent2->is_indirect
9763 && ent2->addend == ent->addend
9764 && ent2->tls_type == ent->tls_type
9765 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9767 ent2->is_indirect = TRUE;
9768 ent2->got.ent = ent;
9772 /* If H is undefined, make it dynamic if that makes sense. */
9775 ensure_undef_dynamic (struct bfd_link_info *info,
9776 struct elf_link_hash_entry *h)
9778 struct elf_link_hash_table *htab = elf_hash_table (info);
9780 if (htab->dynamic_sections_created
9781 && ((info->dynamic_undefined_weak != 0
9782 && h->root.type == bfd_link_hash_undefweak)
9783 || h->root.type == bfd_link_hash_undefined)
9786 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9787 return bfd_elf_link_record_dynamic_symbol (info, h);
9791 /* Allocate space in .plt, .got and associated reloc sections for
9795 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9797 struct bfd_link_info *info;
9798 struct ppc_link_hash_table *htab;
9800 struct ppc_link_hash_entry *eh;
9801 struct got_entry **pgent, *gent;
9803 if (h->root.type == bfd_link_hash_indirect)
9806 info = (struct bfd_link_info *) inf;
9807 htab = ppc_hash_table (info);
9811 eh = (struct ppc_link_hash_entry *) h;
9812 /* Run through the TLS GD got entries first if we're changing them
9814 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9815 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9816 if (gent->got.refcount > 0
9817 && (gent->tls_type & TLS_GD) != 0)
9819 /* This was a GD entry that has been converted to TPREL. If
9820 there happens to be a TPREL entry we can use that one. */
9821 struct got_entry *ent;
9822 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9823 if (ent->got.refcount > 0
9824 && (ent->tls_type & TLS_TPREL) != 0
9825 && ent->addend == gent->addend
9826 && ent->owner == gent->owner)
9828 gent->got.refcount = 0;
9832 /* If not, then we'll be using our own TPREL entry. */
9833 if (gent->got.refcount != 0)
9834 gent->tls_type = TLS_TLS | TLS_TPREL;
9837 /* Remove any list entry that won't generate a word in the GOT before
9838 we call merge_got_entries. Otherwise we risk merging to empty
9840 pgent = &h->got.glist;
9841 while ((gent = *pgent) != NULL)
9842 if (gent->got.refcount > 0)
9844 if ((gent->tls_type & TLS_LD) != 0
9847 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9848 *pgent = gent->next;
9851 pgent = &gent->next;
9854 *pgent = gent->next;
9856 if (!htab->do_multi_toc)
9857 merge_got_entries (&h->got.glist);
9859 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9860 if (!gent->is_indirect)
9862 /* Make sure this symbol is output as a dynamic symbol. */
9863 if (!ensure_undef_dynamic (info, h))
9866 if (!is_ppc64_elf (gent->owner))
9869 allocate_got (h, info, gent);
9872 /* If no dynamic sections we can't have dynamic relocs, except for
9873 IFUNCs which are handled even in static executables. */
9874 if (!htab->elf.dynamic_sections_created
9875 && h->type != STT_GNU_IFUNC)
9876 eh->dyn_relocs = NULL;
9878 /* Also discard relocs on undefined weak syms with non-default
9879 visibility, or when dynamic_undefined_weak says so. */
9880 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9881 eh->dyn_relocs = NULL;
9883 if (eh->dyn_relocs != NULL)
9885 struct elf_dyn_relocs *p, **pp;
9887 /* In the shared -Bsymbolic case, discard space allocated for
9888 dynamic pc-relative relocs against symbols which turn out to
9889 be defined in regular objects. For the normal shared case,
9890 discard space for relocs that have become local due to symbol
9891 visibility changes. */
9893 if (bfd_link_pic (info))
9895 /* Relocs that use pc_count are those that appear on a call
9896 insn, or certain REL relocs (see must_be_dyn_reloc) that
9897 can be generated via assembly. We want calls to
9898 protected symbols to resolve directly to the function
9899 rather than going via the plt. If people want function
9900 pointer comparisons to work as expected then they should
9901 avoid writing weird assembly. */
9902 if (SYMBOL_CALLS_LOCAL (info, h))
9904 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9906 p->count -= p->pc_count;
9915 if (eh->dyn_relocs != NULL)
9917 /* Make sure this symbol is output as a dynamic symbol. */
9918 if (!ensure_undef_dynamic (info, h))
9922 else if (h->type == STT_GNU_IFUNC)
9924 /* A plt entry is always created when making direct calls to
9925 an ifunc, even when building a static executable, but
9926 that doesn't cover all cases. We may have only an ifunc
9927 initialised function pointer for a given ifunc symbol.
9929 For ELFv2, dynamic relocations are not required when
9930 generating a global entry PLT stub. */
9931 if (abiversion (info->output_bfd) >= 2)
9933 if (global_entry_stub (h))
9934 eh->dyn_relocs = NULL;
9937 /* For ELFv1 we have function descriptors. Descriptors need
9938 to be treated like PLT entries and thus have dynamic
9939 relocations. One exception is when the function
9940 descriptor is copied into .dynbss (which should only
9941 happen with ancient versions of gcc). */
9942 else if (h->needs_copy)
9943 eh->dyn_relocs = NULL;
9945 else if (ELIMINATE_COPY_RELOCS)
9947 /* For the non-pic case, discard space for relocs against
9948 symbols which turn out to need copy relocs or are not
9953 /* Make sure this symbol is output as a dynamic symbol. */
9954 if (!ensure_undef_dynamic (info, h))
9957 if (h->dynindx == -1)
9958 eh->dyn_relocs = NULL;
9961 eh->dyn_relocs = NULL;
9964 /* Finally, allocate space. */
9965 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9967 asection *sreloc = elf_section_data (p->sec)->sreloc;
9968 if (eh->elf.type == STT_GNU_IFUNC)
9969 sreloc = htab->elf.irelplt;
9970 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9974 if ((htab->elf.dynamic_sections_created
9975 && h->dynindx != -1)
9976 || h->type == STT_GNU_IFUNC)
9978 struct plt_entry *pent;
9979 bfd_boolean doneone = FALSE;
9980 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9981 if (pent->plt.refcount > 0)
9983 if (!htab->elf.dynamic_sections_created
9984 || h->dynindx == -1)
9987 pent->plt.offset = s->size;
9988 s->size += PLT_ENTRY_SIZE (htab);
9989 s = htab->elf.irelplt;
9993 /* If this is the first .plt entry, make room for the special
9997 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9999 pent->plt.offset = s->size;
10001 /* Make room for this entry. */
10002 s->size += PLT_ENTRY_SIZE (htab);
10004 /* Make room for the .glink code. */
10007 s->size += GLINK_CALL_STUB_SIZE;
10010 /* We need bigger stubs past index 32767. */
10011 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
10018 /* We also need to make an entry in the .rela.plt section. */
10019 s = htab->elf.srelplt;
10021 s->size += sizeof (Elf64_External_Rela);
10025 pent->plt.offset = (bfd_vma) -1;
10028 h->plt.plist = NULL;
10034 h->plt.plist = NULL;
10041 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
10042 to set up space for global entry stubs. These are put in glink,
10043 after the branch table. */
10046 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
10048 struct bfd_link_info *info;
10049 struct ppc_link_hash_table *htab;
10050 struct plt_entry *pent;
10053 if (h->root.type == bfd_link_hash_indirect)
10056 if (!h->pointer_equality_needed)
10059 if (h->def_regular)
10063 htab = ppc_hash_table (info);
10068 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
10069 if (pent->plt.offset != (bfd_vma) -1
10070 && pent->addend == 0)
10072 /* For ELFv2, if this symbol is not defined in a regular file
10073 and we are not generating a shared library or pie, then we
10074 need to define the symbol in the executable on a call stub.
10075 This is to avoid text relocations. */
10076 s->size = (s->size + 15) & -16;
10077 h->root.type = bfd_link_hash_defined;
10078 h->root.u.def.section = s;
10079 h->root.u.def.value = s->size;
10086 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
10087 read-only sections. */
10090 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
10092 if (h->root.type == bfd_link_hash_indirect)
10095 if (readonly_dynrelocs (h))
10097 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
10099 /* Not an error, just cut short the traversal. */
10105 /* Set the sizes of the dynamic sections. */
10108 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
10109 struct bfd_link_info *info)
10111 struct ppc_link_hash_table *htab;
10114 bfd_boolean relocs;
10116 struct got_entry *first_tlsld;
10118 htab = ppc_hash_table (info);
10122 dynobj = htab->elf.dynobj;
10123 if (dynobj == NULL)
10126 if (htab->elf.dynamic_sections_created)
10128 /* Set the contents of the .interp section to the interpreter. */
10129 if (bfd_link_executable (info) && !info->nointerp)
10131 s = bfd_get_linker_section (dynobj, ".interp");
10134 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10135 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10139 /* Set up .got offsets for local syms, and space for local dynamic
10141 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10143 struct got_entry **lgot_ents;
10144 struct got_entry **end_lgot_ents;
10145 struct plt_entry **local_plt;
10146 struct plt_entry **end_local_plt;
10147 unsigned char *lgot_masks;
10148 bfd_size_type locsymcount;
10149 Elf_Internal_Shdr *symtab_hdr;
10151 if (!is_ppc64_elf (ibfd))
10154 for (s = ibfd->sections; s != NULL; s = s->next)
10156 struct ppc_dyn_relocs *p;
10158 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10160 if (!bfd_is_abs_section (p->sec)
10161 && bfd_is_abs_section (p->sec->output_section))
10163 /* Input section has been discarded, either because
10164 it is a copy of a linkonce section or due to
10165 linker script /DISCARD/, so we'll be discarding
10168 else if (p->count != 0)
10170 asection *srel = elf_section_data (p->sec)->sreloc;
10172 srel = htab->elf.irelplt;
10173 srel->size += p->count * sizeof (Elf64_External_Rela);
10174 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10175 info->flags |= DF_TEXTREL;
10180 lgot_ents = elf_local_got_ents (ibfd);
10184 symtab_hdr = &elf_symtab_hdr (ibfd);
10185 locsymcount = symtab_hdr->sh_info;
10186 end_lgot_ents = lgot_ents + locsymcount;
10187 local_plt = (struct plt_entry **) end_lgot_ents;
10188 end_local_plt = local_plt + locsymcount;
10189 lgot_masks = (unsigned char *) end_local_plt;
10190 s = ppc64_elf_tdata (ibfd)->got;
10191 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10193 struct got_entry **pent, *ent;
10196 while ((ent = *pent) != NULL)
10197 if (ent->got.refcount > 0)
10199 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10201 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10206 unsigned int ent_size = 8;
10207 unsigned int rel_size = sizeof (Elf64_External_Rela);
10209 ent->got.offset = s->size;
10210 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10215 s->size += ent_size;
10216 if ((*lgot_masks & PLT_IFUNC) != 0)
10218 htab->elf.irelplt->size += rel_size;
10219 htab->got_reli_size += rel_size;
10221 else if (bfd_link_pic (info))
10223 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10224 srel->size += rel_size;
10233 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10234 for (; local_plt < end_local_plt; ++local_plt)
10236 struct plt_entry *ent;
10238 for (ent = *local_plt; ent != NULL; ent = ent->next)
10239 if (ent->plt.refcount > 0)
10241 s = htab->elf.iplt;
10242 ent->plt.offset = s->size;
10243 s->size += PLT_ENTRY_SIZE (htab);
10245 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10248 ent->plt.offset = (bfd_vma) -1;
10252 /* Allocate global sym .plt and .got entries, and space for global
10253 sym dynamic relocs. */
10254 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10255 /* Stash the end of glink branch table. */
10256 if (htab->glink != NULL)
10257 htab->glink->rawsize = htab->glink->size;
10259 if (!htab->opd_abi && !bfd_link_pic (info))
10260 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10262 first_tlsld = NULL;
10263 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10265 struct got_entry *ent;
10267 if (!is_ppc64_elf (ibfd))
10270 ent = ppc64_tlsld_got (ibfd);
10271 if (ent->got.refcount > 0)
10273 if (!htab->do_multi_toc && first_tlsld != NULL)
10275 ent->is_indirect = TRUE;
10276 ent->got.ent = first_tlsld;
10280 if (first_tlsld == NULL)
10282 s = ppc64_elf_tdata (ibfd)->got;
10283 ent->got.offset = s->size;
10286 if (bfd_link_pic (info))
10288 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10289 srel->size += sizeof (Elf64_External_Rela);
10294 ent->got.offset = (bfd_vma) -1;
10297 /* We now have determined the sizes of the various dynamic sections.
10298 Allocate memory for them. */
10300 for (s = dynobj->sections; s != NULL; s = s->next)
10302 if ((s->flags & SEC_LINKER_CREATED) == 0)
10305 if (s == htab->brlt || s == htab->relbrlt)
10306 /* These haven't been allocated yet; don't strip. */
10308 else if (s == htab->elf.sgot
10309 || s == htab->elf.splt
10310 || s == htab->elf.iplt
10311 || s == htab->glink
10312 || s == htab->elf.sdynbss
10313 || s == htab->elf.sdynrelro)
10315 /* Strip this section if we don't need it; see the
10318 else if (s == htab->glink_eh_frame)
10320 if (!bfd_is_abs_section (s->output_section))
10321 /* Not sized yet. */
10324 else if (CONST_STRNEQ (s->name, ".rela"))
10328 if (s != htab->elf.srelplt)
10331 /* We use the reloc_count field as a counter if we need
10332 to copy relocs into the output file. */
10333 s->reloc_count = 0;
10338 /* It's not one of our sections, so don't allocate space. */
10344 /* If we don't need this section, strip it from the
10345 output file. This is mostly to handle .rela.bss and
10346 .rela.plt. We must create both sections in
10347 create_dynamic_sections, because they must be created
10348 before the linker maps input sections to output
10349 sections. The linker does that before
10350 adjust_dynamic_symbol is called, and it is that
10351 function which decides whether anything needs to go
10352 into these sections. */
10353 s->flags |= SEC_EXCLUDE;
10357 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10360 /* Allocate memory for the section contents. We use bfd_zalloc
10361 here in case unused entries are not reclaimed before the
10362 section's contents are written out. This should not happen,
10363 but this way if it does we get a R_PPC64_NONE reloc in .rela
10364 sections instead of garbage.
10365 We also rely on the section contents being zero when writing
10366 the GOT and .dynrelro. */
10367 s->contents = bfd_zalloc (dynobj, s->size);
10368 if (s->contents == NULL)
10372 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10374 if (!is_ppc64_elf (ibfd))
10377 s = ppc64_elf_tdata (ibfd)->got;
10378 if (s != NULL && s != htab->elf.sgot)
10381 s->flags |= SEC_EXCLUDE;
10384 s->contents = bfd_zalloc (ibfd, s->size);
10385 if (s->contents == NULL)
10389 s = ppc64_elf_tdata (ibfd)->relgot;
10393 s->flags |= SEC_EXCLUDE;
10396 s->contents = bfd_zalloc (ibfd, s->size);
10397 if (s->contents == NULL)
10400 s->reloc_count = 0;
10405 if (htab->elf.dynamic_sections_created)
10407 bfd_boolean tls_opt;
10409 /* Add some entries to the .dynamic section. We fill in the
10410 values later, in ppc64_elf_finish_dynamic_sections, but we
10411 must add the entries now so that we get the correct size for
10412 the .dynamic section. The DT_DEBUG entry is filled in by the
10413 dynamic linker and used by the debugger. */
10414 #define add_dynamic_entry(TAG, VAL) \
10415 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10417 if (bfd_link_executable (info))
10419 if (!add_dynamic_entry (DT_DEBUG, 0))
10423 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10425 if (!add_dynamic_entry (DT_PLTGOT, 0)
10426 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10427 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10428 || !add_dynamic_entry (DT_JMPREL, 0)
10429 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10433 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10435 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10436 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10440 tls_opt = (htab->params->tls_get_addr_opt
10441 && htab->tls_get_addr_fd != NULL
10442 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10443 if (tls_opt || !htab->opd_abi)
10445 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10451 if (!add_dynamic_entry (DT_RELA, 0)
10452 || !add_dynamic_entry (DT_RELASZ, 0)
10453 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10456 /* If any dynamic relocs apply to a read-only section,
10457 then we need a DT_TEXTREL entry. */
10458 if ((info->flags & DF_TEXTREL) == 0)
10459 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10461 if ((info->flags & DF_TEXTREL) != 0)
10463 if (!add_dynamic_entry (DT_TEXTREL, 0))
10468 #undef add_dynamic_entry
10473 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10476 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10478 if (h->plt.plist != NULL
10480 && !h->pointer_equality_needed)
10483 return _bfd_elf_hash_symbol (h);
10486 /* Determine the type of stub needed, if any, for a call. */
10488 static inline enum ppc_stub_type
10489 ppc_type_of_stub (asection *input_sec,
10490 const Elf_Internal_Rela *rel,
10491 struct ppc_link_hash_entry **hash,
10492 struct plt_entry **plt_ent,
10493 bfd_vma destination,
10494 unsigned long local_off)
10496 struct ppc_link_hash_entry *h = *hash;
10498 bfd_vma branch_offset;
10499 bfd_vma max_branch_offset;
10500 enum elf_ppc64_reloc_type r_type;
10504 struct plt_entry *ent;
10505 struct ppc_link_hash_entry *fdh = h;
10507 && h->oh->is_func_descriptor)
10509 fdh = ppc_follow_link (h->oh);
10513 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10514 if (ent->addend == rel->r_addend
10515 && ent->plt.offset != (bfd_vma) -1)
10518 return ppc_stub_plt_call;
10521 /* Here, we know we don't have a plt entry. If we don't have a
10522 either a defined function descriptor or a defined entry symbol
10523 in a regular object file, then it is pointless trying to make
10524 any other type of stub. */
10525 if (!is_static_defined (&fdh->elf)
10526 && !is_static_defined (&h->elf))
10527 return ppc_stub_none;
10529 else if (elf_local_got_ents (input_sec->owner) != NULL)
10531 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10532 struct plt_entry **local_plt = (struct plt_entry **)
10533 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10534 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10536 if (local_plt[r_symndx] != NULL)
10538 struct plt_entry *ent;
10540 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10541 if (ent->addend == rel->r_addend
10542 && ent->plt.offset != (bfd_vma) -1)
10545 return ppc_stub_plt_call;
10550 /* Determine where the call point is. */
10551 location = (input_sec->output_offset
10552 + input_sec->output_section->vma
10555 branch_offset = destination - location;
10556 r_type = ELF64_R_TYPE (rel->r_info);
10558 /* Determine if a long branch stub is needed. */
10559 max_branch_offset = 1 << 25;
10560 if (r_type != R_PPC64_REL24)
10561 max_branch_offset = 1 << 15;
10563 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10564 /* We need a stub. Figure out whether a long_branch or plt_branch
10565 is needed later. */
10566 return ppc_stub_long_branch;
10568 return ppc_stub_none;
10571 /* With power7 weakly ordered memory model, it is possible for ld.so
10572 to update a plt entry in one thread and have another thread see a
10573 stale zero toc entry. To avoid this we need some sort of acquire
10574 barrier in the call stub. One solution is to make the load of the
10575 toc word seem to appear to depend on the load of the function entry
10576 word. Another solution is to test for r2 being zero, and branch to
10577 the appropriate glink entry if so.
10579 . fake dep barrier compare
10580 . ld 12,xxx(2) ld 12,xxx(2)
10581 . mtctr 12 mtctr 12
10582 . xor 11,12,12 ld 2,xxx+8(2)
10583 . add 2,2,11 cmpldi 2,0
10584 . ld 2,xxx+8(2) bnectr+
10585 . bctr b <glink_entry>
10587 The solution involving the compare turns out to be faster, so
10588 that's what we use unless the branch won't reach. */
10590 #define ALWAYS_USE_FAKE_DEP 0
10591 #define ALWAYS_EMIT_R2SAVE 0
10593 #define PPC_LO(v) ((v) & 0xffff)
10594 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10595 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10597 static inline unsigned int
10598 plt_stub_size (struct ppc_link_hash_table *htab,
10599 struct ppc_stub_hash_entry *stub_entry,
10602 unsigned size = 12;
10604 if (ALWAYS_EMIT_R2SAVE
10605 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10607 if (PPC_HA (off) != 0)
10612 if (htab->params->plt_static_chain)
10614 if (htab->params->plt_thread_safe
10615 && htab->elf.dynamic_sections_created
10616 && stub_entry->h != NULL
10617 && stub_entry->h->elf.dynindx != -1)
10619 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10622 if (stub_entry->h != NULL
10623 && (stub_entry->h == htab->tls_get_addr_fd
10624 || stub_entry->h == htab->tls_get_addr)
10625 && htab->params->tls_get_addr_opt)
10628 if (ALWAYS_EMIT_R2SAVE
10629 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10635 /* Depending on the sign of plt_stub_align:
10636 If positive, return the padding to align to a 2**plt_stub_align
10638 If negative, if this stub would cross fewer 2**plt_stub_align
10639 boundaries if we align, then return the padding needed to do so. */
10641 static inline unsigned int
10642 plt_stub_pad (struct ppc_link_hash_table *htab,
10643 struct ppc_stub_hash_entry *stub_entry,
10647 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10648 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10650 if (htab->params->plt_stub_align >= 0)
10652 stub_align = 1 << htab->params->plt_stub_align;
10653 if ((stub_off & (stub_align - 1)) != 0)
10654 return stub_align - (stub_off & (stub_align - 1));
10658 stub_align = 1 << -htab->params->plt_stub_align;
10659 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10660 > ((stub_size - 1) & -stub_align))
10661 return stub_align - (stub_off & (stub_align - 1));
10665 /* Build a .plt call stub. */
10667 static inline bfd_byte *
10668 build_plt_stub (struct ppc_link_hash_table *htab,
10669 struct ppc_stub_hash_entry *stub_entry,
10670 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10672 bfd *obfd = htab->params->stub_bfd;
10673 bfd_boolean plt_load_toc = htab->opd_abi;
10674 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10675 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10676 && htab->elf.dynamic_sections_created
10677 && stub_entry->h != NULL
10678 && stub_entry->h->elf.dynindx != -1);
10679 bfd_boolean use_fake_dep = plt_thread_safe;
10680 bfd_vma cmp_branch_off = 0;
10682 if (!ALWAYS_USE_FAKE_DEP
10685 && !((stub_entry->h == htab->tls_get_addr_fd
10686 || stub_entry->h == htab->tls_get_addr)
10687 && htab->params->tls_get_addr_opt))
10689 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10690 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10691 / PLT_ENTRY_SIZE (htab));
10692 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10695 if (pltindex > 32768)
10696 glinkoff += (pltindex - 32768) * 4;
10698 + htab->glink->output_offset
10699 + htab->glink->output_section->vma);
10700 from = (p - stub_entry->group->stub_sec->contents
10701 + 4 * (ALWAYS_EMIT_R2SAVE
10702 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10703 + 4 * (PPC_HA (offset) != 0)
10704 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10705 != PPC_HA (offset))
10706 + 4 * (plt_static_chain != 0)
10708 + stub_entry->group->stub_sec->output_offset
10709 + stub_entry->group->stub_sec->output_section->vma);
10710 cmp_branch_off = to - from;
10711 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10714 if (PPC_HA (offset) != 0)
10718 if (ALWAYS_EMIT_R2SAVE
10719 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10720 r[0].r_offset += 4;
10721 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10722 r[1].r_offset = r[0].r_offset + 4;
10723 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10724 r[1].r_addend = r[0].r_addend;
10727 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10729 r[2].r_offset = r[1].r_offset + 4;
10730 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10731 r[2].r_addend = r[0].r_addend;
10735 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10736 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10737 r[2].r_addend = r[0].r_addend + 8;
10738 if (plt_static_chain)
10740 r[3].r_offset = r[2].r_offset + 4;
10741 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10742 r[3].r_addend = r[0].r_addend + 16;
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;
10752 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10753 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10757 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10758 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10761 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10763 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10766 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10771 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10772 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10774 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10775 if (plt_static_chain)
10776 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10783 if (ALWAYS_EMIT_R2SAVE
10784 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10785 r[0].r_offset += 4;
10786 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10789 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10791 r[1].r_offset = r[0].r_offset + 4;
10792 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10793 r[1].r_addend = r[0].r_addend;
10797 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10798 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10799 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10800 if (plt_static_chain)
10802 r[2].r_offset = r[1].r_offset + 4;
10803 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10804 r[2].r_addend = r[0].r_addend + 8;
10809 if (ALWAYS_EMIT_R2SAVE
10810 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10811 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10812 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10814 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10816 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10819 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10824 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10825 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10827 if (plt_static_chain)
10828 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10829 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10832 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10834 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10835 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10836 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10839 bfd_put_32 (obfd, BCTR, p), p += 4;
10843 /* Build a special .plt call stub for __tls_get_addr. */
10845 #define LD_R11_0R3 0xe9630000
10846 #define LD_R12_0R3 0xe9830000
10847 #define MR_R0_R3 0x7c601b78
10848 #define CMPDI_R11_0 0x2c2b0000
10849 #define ADD_R3_R12_R13 0x7c6c6a14
10850 #define BEQLR 0x4d820020
10851 #define MR_R3_R0 0x7c030378
10852 #define STD_R11_0R1 0xf9610000
10853 #define BCTRL 0x4e800421
10854 #define LD_R11_0R1 0xe9610000
10855 #define MTLR_R11 0x7d6803a6
10857 static inline bfd_byte *
10858 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10859 struct ppc_stub_hash_entry *stub_entry,
10860 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10862 bfd *obfd = htab->params->stub_bfd;
10864 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10865 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10866 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10867 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10868 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10869 bfd_put_32 (obfd, BEQLR, p), p += 4;
10870 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10872 r[0].r_offset += 7 * 4;
10873 if (!ALWAYS_EMIT_R2SAVE
10874 && stub_entry->stub_type != ppc_stub_plt_call_r2save)
10875 return build_plt_stub (htab, stub_entry, p, offset, r);
10877 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10878 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10881 r[0].r_offset += 2 * 4;
10882 p = build_plt_stub (htab, stub_entry, p, offset, r);
10883 bfd_put_32 (obfd, BCTRL, p - 4);
10885 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10886 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10887 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10888 bfd_put_32 (obfd, BLR, p), p += 4;
10893 static Elf_Internal_Rela *
10894 get_relocs (asection *sec, int count)
10896 Elf_Internal_Rela *relocs;
10897 struct bfd_elf_section_data *elfsec_data;
10899 elfsec_data = elf_section_data (sec);
10900 relocs = elfsec_data->relocs;
10901 if (relocs == NULL)
10903 bfd_size_type relsize;
10904 relsize = sec->reloc_count * sizeof (*relocs);
10905 relocs = bfd_alloc (sec->owner, relsize);
10906 if (relocs == NULL)
10908 elfsec_data->relocs = relocs;
10909 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10910 sizeof (Elf_Internal_Shdr));
10911 if (elfsec_data->rela.hdr == NULL)
10913 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10914 * sizeof (Elf64_External_Rela));
10915 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10916 sec->reloc_count = 0;
10918 relocs += sec->reloc_count;
10919 sec->reloc_count += count;
10924 get_r2off (struct bfd_link_info *info,
10925 struct ppc_stub_hash_entry *stub_entry)
10927 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10928 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10932 /* Support linking -R objects. Get the toc pointer from the
10935 if (!htab->opd_abi)
10937 asection *opd = stub_entry->h->elf.root.u.def.section;
10938 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10940 if (strcmp (opd->name, ".opd") != 0
10941 || opd->reloc_count != 0)
10943 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10944 stub_entry->h->elf.root.root.string);
10945 bfd_set_error (bfd_error_bad_value);
10946 return (bfd_vma) -1;
10948 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10949 return (bfd_vma) -1;
10950 r2off = bfd_get_64 (opd->owner, buf);
10951 r2off -= elf_gp (info->output_bfd);
10953 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10958 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10960 struct ppc_stub_hash_entry *stub_entry;
10961 struct ppc_branch_hash_entry *br_entry;
10962 struct bfd_link_info *info;
10963 struct ppc_link_hash_table *htab;
10968 Elf_Internal_Rela *r;
10971 /* Massage our args to the form they really have. */
10972 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10975 htab = ppc_hash_table (info);
10979 /* Make a note of the offset within the stubs for this entry. */
10980 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10981 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10983 htab->stub_count[stub_entry->stub_type - 1] += 1;
10984 switch (stub_entry->stub_type)
10986 case ppc_stub_long_branch:
10987 case ppc_stub_long_branch_r2off:
10988 /* Branches are relative. This is where we are going to. */
10989 dest = (stub_entry->target_value
10990 + stub_entry->target_section->output_offset
10991 + stub_entry->target_section->output_section->vma);
10992 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10995 /* And this is where we are coming from. */
10996 off -= (stub_entry->stub_offset
10997 + stub_entry->group->stub_sec->output_offset
10998 + stub_entry->group->stub_sec->output_section->vma);
11001 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11003 bfd_vma r2off = get_r2off (info, stub_entry);
11005 if (r2off == (bfd_vma) -1)
11007 htab->stub_error = TRUE;
11010 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11013 if (PPC_HA (r2off) != 0)
11015 bfd_put_32 (htab->params->stub_bfd,
11016 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11020 if (PPC_LO (r2off) != 0)
11022 bfd_put_32 (htab->params->stub_bfd,
11023 ADDI_R2_R2 | PPC_LO (r2off), loc);
11029 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
11031 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
11033 info->callbacks->einfo
11034 (_("%P: long branch stub `%s' offset overflow\n"),
11035 stub_entry->root.string);
11036 htab->stub_error = TRUE;
11040 if (info->emitrelocations)
11042 r = get_relocs (stub_entry->group->stub_sec, 1);
11045 r->r_offset = loc - stub_entry->group->stub_sec->contents;
11046 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
11047 r->r_addend = dest;
11048 if (stub_entry->h != NULL)
11050 struct elf_link_hash_entry **hashes;
11051 unsigned long symndx;
11052 struct ppc_link_hash_entry *h;
11054 hashes = elf_sym_hashes (htab->params->stub_bfd);
11055 if (hashes == NULL)
11057 bfd_size_type hsize;
11059 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
11060 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
11061 if (hashes == NULL)
11063 elf_sym_hashes (htab->params->stub_bfd) = hashes;
11064 htab->stub_globals = 1;
11066 symndx = htab->stub_globals++;
11068 hashes[symndx] = &h->elf;
11069 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
11070 if (h->oh != NULL && h->oh->is_func)
11071 h = ppc_follow_link (h->oh);
11072 if (h->elf.root.u.def.section != stub_entry->target_section)
11073 /* H is an opd symbol. The addend must be zero. */
11077 off = (h->elf.root.u.def.value
11078 + h->elf.root.u.def.section->output_offset
11079 + h->elf.root.u.def.section->output_section->vma);
11080 r->r_addend -= off;
11086 case ppc_stub_plt_branch:
11087 case ppc_stub_plt_branch_r2off:
11088 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11089 stub_entry->root.string + 9,
11091 if (br_entry == NULL)
11093 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
11094 stub_entry->root.string);
11095 htab->stub_error = TRUE;
11099 dest = (stub_entry->target_value
11100 + stub_entry->target_section->output_offset
11101 + stub_entry->target_section->output_section->vma);
11102 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11103 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11105 bfd_put_64 (htab->brlt->owner, dest,
11106 htab->brlt->contents + br_entry->offset);
11108 if (br_entry->iter == htab->stub_iteration)
11110 br_entry->iter = 0;
11112 if (htab->relbrlt != NULL)
11114 /* Create a reloc for the branch lookup table entry. */
11115 Elf_Internal_Rela rela;
11118 rela.r_offset = (br_entry->offset
11119 + htab->brlt->output_offset
11120 + htab->brlt->output_section->vma);
11121 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11122 rela.r_addend = dest;
11124 rl = htab->relbrlt->contents;
11125 rl += (htab->relbrlt->reloc_count++
11126 * sizeof (Elf64_External_Rela));
11127 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
11129 else if (info->emitrelocations)
11131 r = get_relocs (htab->brlt, 1);
11134 /* brlt, being SEC_LINKER_CREATED does not go through the
11135 normal reloc processing. Symbols and offsets are not
11136 translated from input file to output file form, so
11137 set up the offset per the output file. */
11138 r->r_offset = (br_entry->offset
11139 + htab->brlt->output_offset
11140 + htab->brlt->output_section->vma);
11141 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
11142 r->r_addend = dest;
11146 dest = (br_entry->offset
11147 + htab->brlt->output_offset
11148 + htab->brlt->output_section->vma);
11151 - elf_gp (htab->brlt->output_section->owner)
11152 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11154 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11156 info->callbacks->einfo
11157 (_("%P: linkage table error against `%T'\n"),
11158 stub_entry->root.string);
11159 bfd_set_error (bfd_error_bad_value);
11160 htab->stub_error = TRUE;
11164 if (info->emitrelocations)
11166 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11169 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11170 if (bfd_big_endian (info->output_bfd))
11171 r[0].r_offset += 2;
11172 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11173 r[0].r_offset += 4;
11174 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11175 r[0].r_addend = dest;
11176 if (PPC_HA (off) != 0)
11178 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11179 r[1].r_offset = r[0].r_offset + 4;
11180 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11181 r[1].r_addend = r[0].r_addend;
11185 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11187 if (PPC_HA (off) != 0)
11190 bfd_put_32 (htab->params->stub_bfd,
11191 ADDIS_R12_R2 | PPC_HA (off), loc);
11193 bfd_put_32 (htab->params->stub_bfd,
11194 LD_R12_0R12 | PPC_LO (off), loc);
11199 bfd_put_32 (htab->params->stub_bfd,
11200 LD_R12_0R2 | PPC_LO (off), loc);
11205 bfd_vma r2off = get_r2off (info, stub_entry);
11207 if (r2off == (bfd_vma) -1)
11209 htab->stub_error = TRUE;
11213 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11216 if (PPC_HA (off) != 0)
11219 bfd_put_32 (htab->params->stub_bfd,
11220 ADDIS_R12_R2 | PPC_HA (off), loc);
11222 bfd_put_32 (htab->params->stub_bfd,
11223 LD_R12_0R12 | PPC_LO (off), loc);
11226 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11228 if (PPC_HA (r2off) != 0)
11232 bfd_put_32 (htab->params->stub_bfd,
11233 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11235 if (PPC_LO (r2off) != 0)
11239 bfd_put_32 (htab->params->stub_bfd,
11240 ADDI_R2_R2 | PPC_LO (r2off), loc);
11244 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11246 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11249 case ppc_stub_plt_call:
11250 case ppc_stub_plt_call_r2save:
11251 if (stub_entry->h != NULL
11252 && stub_entry->h->is_func_descriptor
11253 && stub_entry->h->oh != NULL)
11255 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11257 /* If the old-ABI "dot-symbol" is undefined make it weak so
11258 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11259 if (fh->elf.root.type == bfd_link_hash_undefined
11260 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11261 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11262 fh->elf.root.type = bfd_link_hash_undefweak;
11265 /* Now build the stub. */
11266 dest = stub_entry->plt_ent->plt.offset & ~1;
11267 if (dest >= (bfd_vma) -2)
11270 plt = htab->elf.splt;
11271 if (!htab->elf.dynamic_sections_created
11272 || stub_entry->h == NULL
11273 || stub_entry->h->elf.dynindx == -1)
11274 plt = htab->elf.iplt;
11276 dest += plt->output_offset + plt->output_section->vma;
11278 if (stub_entry->h == NULL
11279 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11281 Elf_Internal_Rela rela;
11284 rela.r_offset = dest;
11286 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11288 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11289 rela.r_addend = (stub_entry->target_value
11290 + stub_entry->target_section->output_offset
11291 + stub_entry->target_section->output_section->vma);
11293 rl = (htab->elf.irelplt->contents
11294 + (htab->elf.irelplt->reloc_count++
11295 * sizeof (Elf64_External_Rela)));
11296 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11297 stub_entry->plt_ent->plt.offset |= 1;
11298 htab->local_ifunc_resolver = 1;
11302 - elf_gp (plt->output_section->owner)
11303 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11305 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11307 info->callbacks->einfo
11308 /* xgettext:c-format */
11309 (_("%P: linkage table error against `%T'\n"),
11310 stub_entry->h != NULL
11311 ? stub_entry->h->elf.root.root.string
11313 bfd_set_error (bfd_error_bad_value);
11314 htab->stub_error = TRUE;
11318 if (htab->params->plt_stub_align != 0)
11320 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11322 stub_entry->group->stub_sec->size += pad;
11323 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11328 if (info->emitrelocations)
11330 r = get_relocs (stub_entry->group->stub_sec,
11331 ((PPC_HA (off) != 0)
11333 ? 2 + (htab->params->plt_static_chain
11334 && PPC_HA (off + 16) == PPC_HA (off))
11338 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11339 if (bfd_big_endian (info->output_bfd))
11340 r[0].r_offset += 2;
11341 r[0].r_addend = dest;
11343 if (stub_entry->h != NULL
11344 && (stub_entry->h == htab->tls_get_addr_fd
11345 || stub_entry->h == htab->tls_get_addr)
11346 && htab->params->tls_get_addr_opt)
11347 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11349 p = build_plt_stub (htab, stub_entry, loc, off, r);
11353 case ppc_stub_save_res:
11361 stub_entry->group->stub_sec->size += size;
11363 if (htab->params->emit_stub_syms)
11365 struct elf_link_hash_entry *h;
11368 const char *const stub_str[] = { "long_branch",
11369 "long_branch_r2off",
11371 "plt_branch_r2off",
11375 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11376 len2 = strlen (stub_entry->root.string);
11377 name = bfd_malloc (len1 + len2 + 2);
11380 memcpy (name, stub_entry->root.string, 9);
11381 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11382 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11383 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11386 if (h->root.type == bfd_link_hash_new)
11388 h->root.type = bfd_link_hash_defined;
11389 h->root.u.def.section = stub_entry->group->stub_sec;
11390 h->root.u.def.value = stub_entry->stub_offset;
11391 h->ref_regular = 1;
11392 h->def_regular = 1;
11393 h->ref_regular_nonweak = 1;
11394 h->forced_local = 1;
11396 h->root.linker_def = 1;
11403 /* As above, but don't actually build the stub. Just bump offset so
11404 we know stub section sizes, and select plt_branch stubs where
11405 long_branch stubs won't do. */
11408 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11410 struct ppc_stub_hash_entry *stub_entry;
11411 struct bfd_link_info *info;
11412 struct ppc_link_hash_table *htab;
11416 /* Massage our args to the form they really have. */
11417 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11420 htab = ppc_hash_table (info);
11424 if (stub_entry->h != NULL
11425 && stub_entry->h->save_res
11426 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11427 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11429 /* Don't make stubs to out-of-line register save/restore
11430 functions. Instead, emit copies of the functions. */
11431 stub_entry->group->needs_save_res = 1;
11432 stub_entry->stub_type = ppc_stub_save_res;
11436 if (stub_entry->stub_type == ppc_stub_plt_call
11437 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11440 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11441 if (off >= (bfd_vma) -2)
11443 plt = htab->elf.splt;
11444 if (!htab->elf.dynamic_sections_created
11445 || stub_entry->h == NULL
11446 || stub_entry->h->elf.dynindx == -1)
11447 plt = htab->elf.iplt;
11448 off += (plt->output_offset
11449 + plt->output_section->vma
11450 - elf_gp (plt->output_section->owner)
11451 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11453 size = plt_stub_size (htab, stub_entry, off);
11454 if (stub_entry->h != NULL
11455 && (stub_entry->h == htab->tls_get_addr_fd
11456 || stub_entry->h == htab->tls_get_addr)
11457 && htab->params->tls_get_addr_opt
11458 && (ALWAYS_EMIT_R2SAVE
11459 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
11460 stub_entry->group->tls_get_addr_opt_bctrl
11461 = stub_entry->group->stub_sec->size + size - 5 * 4;
11463 if (htab->params->plt_stub_align)
11464 size += plt_stub_pad (htab, stub_entry, off);
11465 if (info->emitrelocations)
11467 stub_entry->group->stub_sec->reloc_count
11468 += ((PPC_HA (off) != 0)
11470 ? 2 + (htab->params->plt_static_chain
11471 && PPC_HA (off + 16) == PPC_HA (off))
11473 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11478 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11481 bfd_vma local_off = 0;
11483 off = (stub_entry->target_value
11484 + stub_entry->target_section->output_offset
11485 + stub_entry->target_section->output_section->vma);
11486 off -= (stub_entry->group->stub_sec->size
11487 + stub_entry->group->stub_sec->output_offset
11488 + stub_entry->group->stub_sec->output_section->vma);
11490 /* Reset the stub type from the plt variant in case we now
11491 can reach with a shorter stub. */
11492 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11493 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11496 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11498 r2off = get_r2off (info, stub_entry);
11499 if (r2off == (bfd_vma) -1)
11501 htab->stub_error = TRUE;
11505 if (PPC_HA (r2off) != 0)
11507 if (PPC_LO (r2off) != 0)
11512 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11514 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11515 Do the same for -R objects without function descriptors. */
11516 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11517 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11519 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11521 struct ppc_branch_hash_entry *br_entry;
11523 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11524 stub_entry->root.string + 9,
11526 if (br_entry == NULL)
11528 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11529 stub_entry->root.string);
11530 htab->stub_error = TRUE;
11534 if (br_entry->iter != htab->stub_iteration)
11536 br_entry->iter = htab->stub_iteration;
11537 br_entry->offset = htab->brlt->size;
11538 htab->brlt->size += 8;
11540 if (htab->relbrlt != NULL)
11541 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11542 else if (info->emitrelocations)
11544 htab->brlt->reloc_count += 1;
11545 htab->brlt->flags |= SEC_RELOC;
11549 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11550 off = (br_entry->offset
11551 + htab->brlt->output_offset
11552 + htab->brlt->output_section->vma
11553 - elf_gp (htab->brlt->output_section->owner)
11554 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11556 if (info->emitrelocations)
11558 stub_entry->group->stub_sec->reloc_count
11559 += 1 + (PPC_HA (off) != 0);
11560 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11563 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11566 if (PPC_HA (off) != 0)
11572 if (PPC_HA (off) != 0)
11575 if (PPC_HA (r2off) != 0)
11577 if (PPC_LO (r2off) != 0)
11581 else if (info->emitrelocations)
11583 stub_entry->group->stub_sec->reloc_count += 1;
11584 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11588 stub_entry->group->stub_sec->size += size;
11592 /* Set up various things so that we can make a list of input sections
11593 for each output section included in the link. Returns -1 on error,
11594 0 when no stubs will be needed, and 1 on success. */
11597 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11601 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11606 htab->sec_info_arr_size = bfd_get_next_section_id ();
11607 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11608 htab->sec_info = bfd_zmalloc (amt);
11609 if (htab->sec_info == NULL)
11612 /* Set toc_off for com, und, abs and ind sections. */
11613 for (id = 0; id < 3; id++)
11614 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11619 /* Set up for first pass at multitoc partitioning. */
11622 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11624 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11626 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11627 htab->toc_bfd = NULL;
11628 htab->toc_first_sec = NULL;
11631 /* The linker repeatedly calls this function for each TOC input section
11632 and linker generated GOT section. Group input bfds such that the toc
11633 within a group is less than 64k in size. */
11636 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11638 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11639 bfd_vma addr, off, limit;
11644 if (!htab->second_toc_pass)
11646 /* Keep track of the first .toc or .got section for this input bfd. */
11647 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11651 htab->toc_bfd = isec->owner;
11652 htab->toc_first_sec = isec;
11655 addr = isec->output_offset + isec->output_section->vma;
11656 off = addr - htab->toc_curr;
11657 limit = 0x80008000;
11658 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11660 if (off + isec->size > limit)
11662 addr = (htab->toc_first_sec->output_offset
11663 + htab->toc_first_sec->output_section->vma);
11664 htab->toc_curr = addr;
11665 htab->toc_curr &= -TOC_BASE_ALIGN;
11668 /* toc_curr is the base address of this toc group. Set elf_gp
11669 for the input section to be the offset relative to the
11670 output toc base plus 0x8000. Making the input elf_gp an
11671 offset allows us to move the toc as a whole without
11672 recalculating input elf_gp. */
11673 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11674 off += TOC_BASE_OFF;
11676 /* Die if someone uses a linker script that doesn't keep input
11677 file .toc and .got together. */
11679 && elf_gp (isec->owner) != 0
11680 && elf_gp (isec->owner) != off)
11683 elf_gp (isec->owner) = off;
11687 /* During the second pass toc_first_sec points to the start of
11688 a toc group, and toc_curr is used to track the old elf_gp.
11689 We use toc_bfd to ensure we only look at each bfd once. */
11690 if (htab->toc_bfd == isec->owner)
11692 htab->toc_bfd = isec->owner;
11694 if (htab->toc_first_sec == NULL
11695 || htab->toc_curr != elf_gp (isec->owner))
11697 htab->toc_curr = elf_gp (isec->owner);
11698 htab->toc_first_sec = isec;
11700 addr = (htab->toc_first_sec->output_offset
11701 + htab->toc_first_sec->output_section->vma);
11702 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11703 elf_gp (isec->owner) = off;
11708 /* Called via elf_link_hash_traverse to merge GOT entries for global
11712 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11714 if (h->root.type == bfd_link_hash_indirect)
11717 merge_got_entries (&h->got.glist);
11722 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11726 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11728 struct got_entry *gent;
11730 if (h->root.type == bfd_link_hash_indirect)
11733 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11734 if (!gent->is_indirect)
11735 allocate_got (h, (struct bfd_link_info *) inf, gent);
11739 /* Called on the first multitoc pass after the last call to
11740 ppc64_elf_next_toc_section. This function removes duplicate GOT
11744 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11746 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11747 struct bfd *ibfd, *ibfd2;
11748 bfd_boolean done_something;
11750 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11752 if (!htab->do_multi_toc)
11755 /* Merge global sym got entries within a toc group. */
11756 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11758 /* And tlsld_got. */
11759 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11761 struct got_entry *ent, *ent2;
11763 if (!is_ppc64_elf (ibfd))
11766 ent = ppc64_tlsld_got (ibfd);
11767 if (!ent->is_indirect
11768 && ent->got.offset != (bfd_vma) -1)
11770 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11772 if (!is_ppc64_elf (ibfd2))
11775 ent2 = ppc64_tlsld_got (ibfd2);
11776 if (!ent2->is_indirect
11777 && ent2->got.offset != (bfd_vma) -1
11778 && elf_gp (ibfd2) == elf_gp (ibfd))
11780 ent2->is_indirect = TRUE;
11781 ent2->got.ent = ent;
11787 /* Zap sizes of got sections. */
11788 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11789 htab->elf.irelplt->size -= htab->got_reli_size;
11790 htab->got_reli_size = 0;
11792 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11794 asection *got, *relgot;
11796 if (!is_ppc64_elf (ibfd))
11799 got = ppc64_elf_tdata (ibfd)->got;
11802 got->rawsize = got->size;
11804 relgot = ppc64_elf_tdata (ibfd)->relgot;
11805 relgot->rawsize = relgot->size;
11810 /* Now reallocate the got, local syms first. We don't need to
11811 allocate section contents again since we never increase size. */
11812 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11814 struct got_entry **lgot_ents;
11815 struct got_entry **end_lgot_ents;
11816 struct plt_entry **local_plt;
11817 struct plt_entry **end_local_plt;
11818 unsigned char *lgot_masks;
11819 bfd_size_type locsymcount;
11820 Elf_Internal_Shdr *symtab_hdr;
11823 if (!is_ppc64_elf (ibfd))
11826 lgot_ents = elf_local_got_ents (ibfd);
11830 symtab_hdr = &elf_symtab_hdr (ibfd);
11831 locsymcount = symtab_hdr->sh_info;
11832 end_lgot_ents = lgot_ents + locsymcount;
11833 local_plt = (struct plt_entry **) end_lgot_ents;
11834 end_local_plt = local_plt + locsymcount;
11835 lgot_masks = (unsigned char *) end_local_plt;
11836 s = ppc64_elf_tdata (ibfd)->got;
11837 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11839 struct got_entry *ent;
11841 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11843 unsigned int ent_size = 8;
11844 unsigned int rel_size = sizeof (Elf64_External_Rela);
11846 ent->got.offset = s->size;
11847 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11852 s->size += ent_size;
11853 if ((*lgot_masks & PLT_IFUNC) != 0)
11855 htab->elf.irelplt->size += rel_size;
11856 htab->got_reli_size += rel_size;
11858 else if (bfd_link_pic (info))
11860 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11861 srel->size += rel_size;
11867 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11869 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11871 struct got_entry *ent;
11873 if (!is_ppc64_elf (ibfd))
11876 ent = ppc64_tlsld_got (ibfd);
11877 if (!ent->is_indirect
11878 && ent->got.offset != (bfd_vma) -1)
11880 asection *s = ppc64_elf_tdata (ibfd)->got;
11881 ent->got.offset = s->size;
11883 if (bfd_link_pic (info))
11885 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11886 srel->size += sizeof (Elf64_External_Rela);
11891 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11892 if (!done_something)
11893 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11897 if (!is_ppc64_elf (ibfd))
11900 got = ppc64_elf_tdata (ibfd)->got;
11903 done_something = got->rawsize != got->size;
11904 if (done_something)
11909 if (done_something)
11910 (*htab->params->layout_sections_again) ();
11912 /* Set up for second pass over toc sections to recalculate elf_gp
11913 on input sections. */
11914 htab->toc_bfd = NULL;
11915 htab->toc_first_sec = NULL;
11916 htab->second_toc_pass = TRUE;
11917 return done_something;
11920 /* Called after second pass of multitoc partitioning. */
11923 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11925 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11927 /* After the second pass, toc_curr tracks the TOC offset used
11928 for code sections below in ppc64_elf_next_input_section. */
11929 htab->toc_curr = TOC_BASE_OFF;
11932 /* No toc references were found in ISEC. If the code in ISEC makes no
11933 calls, then there's no need to use toc adjusting stubs when branching
11934 into ISEC. Actually, indirect calls from ISEC are OK as they will
11935 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11936 needed, and 2 if a cyclical call-graph was found but no other reason
11937 for a stub was detected. If called from the top level, a return of
11938 2 means the same as a return of 0. */
11941 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11945 /* Mark this section as checked. */
11946 isec->call_check_done = 1;
11948 /* We know none of our code bearing sections will need toc stubs. */
11949 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11952 if (isec->size == 0)
11955 if (isec->output_section == NULL)
11959 if (isec->reloc_count != 0)
11961 Elf_Internal_Rela *relstart, *rel;
11962 Elf_Internal_Sym *local_syms;
11963 struct ppc_link_hash_table *htab;
11965 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11966 info->keep_memory);
11967 if (relstart == NULL)
11970 /* Look for branches to outside of this section. */
11972 htab = ppc_hash_table (info);
11976 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11978 enum elf_ppc64_reloc_type r_type;
11979 unsigned long r_symndx;
11980 struct elf_link_hash_entry *h;
11981 struct ppc_link_hash_entry *eh;
11982 Elf_Internal_Sym *sym;
11984 struct _opd_sec_data *opd;
11988 r_type = ELF64_R_TYPE (rel->r_info);
11989 if (r_type != R_PPC64_REL24
11990 && r_type != R_PPC64_REL14
11991 && r_type != R_PPC64_REL14_BRTAKEN
11992 && r_type != R_PPC64_REL14_BRNTAKEN)
11995 r_symndx = ELF64_R_SYM (rel->r_info);
11996 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
12003 /* Calls to dynamic lib functions go through a plt call stub
12005 eh = (struct ppc_link_hash_entry *) h;
12007 && (eh->elf.plt.plist != NULL
12009 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
12015 if (sym_sec == NULL)
12016 /* Ignore other undefined symbols. */
12019 /* Assume branches to other sections not included in the
12020 link need stubs too, to cover -R and absolute syms. */
12021 if (sym_sec->output_section == NULL)
12028 sym_value = sym->st_value;
12031 if (h->root.type != bfd_link_hash_defined
12032 && h->root.type != bfd_link_hash_defweak)
12034 sym_value = h->root.u.def.value;
12036 sym_value += rel->r_addend;
12038 /* If this branch reloc uses an opd sym, find the code section. */
12039 opd = get_opd_info (sym_sec);
12042 if (h == NULL && opd->adjust != NULL)
12046 adjust = opd->adjust[OPD_NDX (sym_value)];
12048 /* Assume deleted functions won't ever be called. */
12050 sym_value += adjust;
12053 dest = opd_entry_value (sym_sec, sym_value,
12054 &sym_sec, NULL, FALSE);
12055 if (dest == (bfd_vma) -1)
12060 + sym_sec->output_offset
12061 + sym_sec->output_section->vma);
12063 /* Ignore branch to self. */
12064 if (sym_sec == isec)
12067 /* If the called function uses the toc, we need a stub. */
12068 if (sym_sec->has_toc_reloc
12069 || sym_sec->makes_toc_func_call)
12075 /* Assume any branch that needs a long branch stub might in fact
12076 need a plt_branch stub. A plt_branch stub uses r2. */
12077 else if (dest - (isec->output_offset
12078 + isec->output_section->vma
12079 + rel->r_offset) + (1 << 25)
12080 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
12088 /* If calling back to a section in the process of being
12089 tested, we can't say for sure that no toc adjusting stubs
12090 are needed, so don't return zero. */
12091 else if (sym_sec->call_check_in_progress)
12094 /* Branches to another section that itself doesn't have any TOC
12095 references are OK. Recursively call ourselves to check. */
12096 else if (!sym_sec->call_check_done)
12100 /* Mark current section as indeterminate, so that other
12101 sections that call back to current won't be marked as
12103 isec->call_check_in_progress = 1;
12104 recur = toc_adjusting_stub_needed (info, sym_sec);
12105 isec->call_check_in_progress = 0;
12116 if (local_syms != NULL
12117 && (elf_symtab_hdr (isec->owner).contents
12118 != (unsigned char *) local_syms))
12120 if (elf_section_data (isec)->relocs != relstart)
12125 && isec->map_head.s != NULL
12126 && (strcmp (isec->output_section->name, ".init") == 0
12127 || strcmp (isec->output_section->name, ".fini") == 0))
12129 if (isec->map_head.s->has_toc_reloc
12130 || isec->map_head.s->makes_toc_func_call)
12132 else if (!isec->map_head.s->call_check_done)
12135 isec->call_check_in_progress = 1;
12136 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
12137 isec->call_check_in_progress = 0;
12144 isec->makes_toc_func_call = 1;
12149 /* The linker repeatedly calls this function for each input section,
12150 in the order that input sections are linked into output sections.
12151 Build lists of input sections to determine groupings between which
12152 we may insert linker stubs. */
12155 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
12157 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12162 if ((isec->output_section->flags & SEC_CODE) != 0
12163 && isec->output_section->id < htab->sec_info_arr_size)
12165 /* This happens to make the list in reverse order,
12166 which is what we want. */
12167 htab->sec_info[isec->id].u.list
12168 = htab->sec_info[isec->output_section->id].u.list;
12169 htab->sec_info[isec->output_section->id].u.list = isec;
12172 if (htab->multi_toc_needed)
12174 /* Analyse sections that aren't already flagged as needing a
12175 valid toc pointer. Exclude .fixup for the linux kernel.
12176 .fixup contains branches, but only back to the function that
12177 hit an exception. */
12178 if (!(isec->has_toc_reloc
12179 || (isec->flags & SEC_CODE) == 0
12180 || strcmp (isec->name, ".fixup") == 0
12181 || isec->call_check_done))
12183 if (toc_adjusting_stub_needed (info, isec) < 0)
12186 /* Make all sections use the TOC assigned for this object file.
12187 This will be wrong for pasted sections; We fix that in
12188 check_pasted_section(). */
12189 if (elf_gp (isec->owner) != 0)
12190 htab->toc_curr = elf_gp (isec->owner);
12193 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12197 /* Check that all .init and .fini sections use the same toc, if they
12198 have toc relocs. */
12201 check_pasted_section (struct bfd_link_info *info, const char *name)
12203 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12207 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12208 bfd_vma toc_off = 0;
12211 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12212 if (i->has_toc_reloc)
12215 toc_off = htab->sec_info[i->id].toc_off;
12216 else if (toc_off != htab->sec_info[i->id].toc_off)
12221 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12222 if (i->makes_toc_func_call)
12224 toc_off = htab->sec_info[i->id].toc_off;
12228 /* Make sure the whole pasted function uses the same toc offset. */
12230 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12231 htab->sec_info[i->id].toc_off = toc_off;
12237 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12239 return (check_pasted_section (info, ".init")
12240 & check_pasted_section (info, ".fini"));
12243 /* See whether we can group stub sections together. Grouping stub
12244 sections may result in fewer stubs. More importantly, we need to
12245 put all .init* and .fini* stubs at the beginning of the .init or
12246 .fini output sections respectively, because glibc splits the
12247 _init and _fini functions into multiple parts. Putting a stub in
12248 the middle of a function is not a good idea. */
12251 group_sections (struct bfd_link_info *info,
12252 bfd_size_type stub_group_size,
12253 bfd_boolean stubs_always_before_branch)
12255 struct ppc_link_hash_table *htab;
12257 bfd_boolean suppress_size_errors;
12259 htab = ppc_hash_table (info);
12263 suppress_size_errors = FALSE;
12264 if (stub_group_size == 1)
12266 /* Default values. */
12267 if (stubs_always_before_branch)
12268 stub_group_size = 0x1e00000;
12270 stub_group_size = 0x1c00000;
12271 suppress_size_errors = TRUE;
12274 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12278 if (osec->id >= htab->sec_info_arr_size)
12281 tail = htab->sec_info[osec->id].u.list;
12282 while (tail != NULL)
12286 bfd_size_type total;
12287 bfd_boolean big_sec;
12289 struct map_stub *group;
12290 bfd_size_type group_size;
12293 total = tail->size;
12294 group_size = (ppc64_elf_section_data (tail) != NULL
12295 && ppc64_elf_section_data (tail)->has_14bit_branch
12296 ? stub_group_size >> 10 : stub_group_size);
12298 big_sec = total > group_size;
12299 if (big_sec && !suppress_size_errors)
12300 /* xgettext:c-format */
12301 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12302 tail->owner, tail);
12303 curr_toc = htab->sec_info[tail->id].toc_off;
12305 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12306 && ((total += curr->output_offset - prev->output_offset)
12307 < (ppc64_elf_section_data (prev) != NULL
12308 && ppc64_elf_section_data (prev)->has_14bit_branch
12309 ? (group_size = stub_group_size >> 10) : group_size))
12310 && htab->sec_info[prev->id].toc_off == curr_toc)
12313 /* OK, the size from the start of CURR to the end is less
12314 than group_size and thus can be handled by one stub
12315 section. (or the tail section is itself larger than
12316 group_size, in which case we may be toast.) We should
12317 really be keeping track of the total size of stubs added
12318 here, as stubs contribute to the final output section
12319 size. That's a little tricky, and this way will only
12320 break if stubs added make the total size more than 2^25,
12321 ie. for the default stub_group_size, if stubs total more
12322 than 2097152 bytes, or nearly 75000 plt call stubs. */
12323 group = bfd_alloc (curr->owner, sizeof (*group));
12326 group->link_sec = curr;
12327 group->stub_sec = NULL;
12328 group->needs_save_res = 0;
12329 group->tls_get_addr_opt_bctrl = -1u;
12330 group->next = htab->group;
12331 htab->group = group;
12334 prev = htab->sec_info[tail->id].u.list;
12335 /* Set up this stub group. */
12336 htab->sec_info[tail->id].u.group = group;
12338 while (tail != curr && (tail = prev) != NULL);
12340 /* But wait, there's more! Input sections up to group_size
12341 bytes before the stub section can be handled by it too.
12342 Don't do this if we have a really large section after the
12343 stubs, as adding more stubs increases the chance that
12344 branches may not reach into the stub section. */
12345 if (!stubs_always_before_branch && !big_sec)
12348 while (prev != NULL
12349 && ((total += tail->output_offset - prev->output_offset)
12350 < (ppc64_elf_section_data (prev) != NULL
12351 && ppc64_elf_section_data (prev)->has_14bit_branch
12352 ? (group_size = stub_group_size >> 10) : group_size))
12353 && htab->sec_info[prev->id].toc_off == curr_toc)
12356 prev = htab->sec_info[tail->id].u.list;
12357 htab->sec_info[tail->id].u.group = group;
12366 static const unsigned char glink_eh_frame_cie[] =
12368 0, 0, 0, 16, /* length. */
12369 0, 0, 0, 0, /* id. */
12370 1, /* CIE version. */
12371 'z', 'R', 0, /* Augmentation string. */
12372 4, /* Code alignment. */
12373 0x78, /* Data alignment. */
12375 1, /* Augmentation size. */
12376 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12377 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
12381 stub_eh_frame_size (struct map_stub *group, size_t align)
12383 size_t this_size = 17;
12384 if (group->tls_get_addr_opt_bctrl != -1u)
12386 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12389 else if (to_bctrl < 256)
12391 else if (to_bctrl < 65536)
12397 this_size = (this_size + align - 1) & -align;
12401 /* Stripping output sections is normally done before dynamic section
12402 symbols have been allocated. This function is called later, and
12403 handles cases like htab->brlt which is mapped to its own output
12407 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12409 if (isec->size == 0
12410 && isec->output_section->size == 0
12411 && !(isec->output_section->flags & SEC_KEEP)
12412 && !bfd_section_removed_from_list (info->output_bfd,
12413 isec->output_section)
12414 && elf_section_data (isec->output_section)->dynindx == 0)
12416 isec->output_section->flags |= SEC_EXCLUDE;
12417 bfd_section_list_remove (info->output_bfd, isec->output_section);
12418 info->output_bfd->section_count--;
12422 /* Determine and set the size of the stub section for a final link.
12424 The basic idea here is to examine all the relocations looking for
12425 PC-relative calls to a target that is unreachable with a "bl"
12429 ppc64_elf_size_stubs (struct bfd_link_info *info)
12431 bfd_size_type stub_group_size;
12432 bfd_boolean stubs_always_before_branch;
12433 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12438 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12439 htab->params->plt_thread_safe = 1;
12440 if (!htab->opd_abi)
12441 htab->params->plt_thread_safe = 0;
12442 else if (htab->params->plt_thread_safe == -1)
12444 static const char *const thread_starter[] =
12448 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12450 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12451 "mq_notify", "create_timer",
12456 "GOMP_parallel_start",
12457 "GOMP_parallel_loop_static",
12458 "GOMP_parallel_loop_static_start",
12459 "GOMP_parallel_loop_dynamic",
12460 "GOMP_parallel_loop_dynamic_start",
12461 "GOMP_parallel_loop_guided",
12462 "GOMP_parallel_loop_guided_start",
12463 "GOMP_parallel_loop_runtime",
12464 "GOMP_parallel_loop_runtime_start",
12465 "GOMP_parallel_sections",
12466 "GOMP_parallel_sections_start",
12472 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12474 struct elf_link_hash_entry *h;
12475 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12476 FALSE, FALSE, TRUE);
12477 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12478 if (htab->params->plt_thread_safe)
12482 stubs_always_before_branch = htab->params->group_size < 0;
12483 if (htab->params->group_size < 0)
12484 stub_group_size = -htab->params->group_size;
12486 stub_group_size = htab->params->group_size;
12488 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12491 #define STUB_SHRINK_ITER 20
12492 /* Loop until no stubs added. After iteration 20 of this loop we may
12493 exit on a stub section shrinking. This is to break out of a
12494 pathological case where adding stubs on one iteration decreases
12495 section gaps (perhaps due to alignment), which then requires
12496 fewer or smaller stubs on the next iteration. */
12501 unsigned int bfd_indx;
12502 struct map_stub *group;
12504 htab->stub_iteration += 1;
12506 for (input_bfd = info->input_bfds, bfd_indx = 0;
12508 input_bfd = input_bfd->link.next, bfd_indx++)
12510 Elf_Internal_Shdr *symtab_hdr;
12512 Elf_Internal_Sym *local_syms = NULL;
12514 if (!is_ppc64_elf (input_bfd))
12517 /* We'll need the symbol table in a second. */
12518 symtab_hdr = &elf_symtab_hdr (input_bfd);
12519 if (symtab_hdr->sh_info == 0)
12522 /* Walk over each section attached to the input bfd. */
12523 for (section = input_bfd->sections;
12525 section = section->next)
12527 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12529 /* If there aren't any relocs, then there's nothing more
12531 if ((section->flags & SEC_RELOC) == 0
12532 || (section->flags & SEC_ALLOC) == 0
12533 || (section->flags & SEC_LOAD) == 0
12534 || (section->flags & SEC_CODE) == 0
12535 || section->reloc_count == 0)
12538 /* If this section is a link-once section that will be
12539 discarded, then don't create any stubs. */
12540 if (section->output_section == NULL
12541 || section->output_section->owner != info->output_bfd)
12544 /* Get the relocs. */
12546 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12547 info->keep_memory);
12548 if (internal_relocs == NULL)
12549 goto error_ret_free_local;
12551 /* Now examine each relocation. */
12552 irela = internal_relocs;
12553 irelaend = irela + section->reloc_count;
12554 for (; irela < irelaend; irela++)
12556 enum elf_ppc64_reloc_type r_type;
12557 unsigned int r_indx;
12558 enum ppc_stub_type stub_type;
12559 struct ppc_stub_hash_entry *stub_entry;
12560 asection *sym_sec, *code_sec;
12561 bfd_vma sym_value, code_value;
12562 bfd_vma destination;
12563 unsigned long local_off;
12564 bfd_boolean ok_dest;
12565 struct ppc_link_hash_entry *hash;
12566 struct ppc_link_hash_entry *fdh;
12567 struct elf_link_hash_entry *h;
12568 Elf_Internal_Sym *sym;
12570 const asection *id_sec;
12571 struct _opd_sec_data *opd;
12572 struct plt_entry *plt_ent;
12574 r_type = ELF64_R_TYPE (irela->r_info);
12575 r_indx = ELF64_R_SYM (irela->r_info);
12577 if (r_type >= R_PPC64_max)
12579 bfd_set_error (bfd_error_bad_value);
12580 goto error_ret_free_internal;
12583 /* Only look for stubs on branch instructions. */
12584 if (r_type != R_PPC64_REL24
12585 && r_type != R_PPC64_REL14
12586 && r_type != R_PPC64_REL14_BRTAKEN
12587 && r_type != R_PPC64_REL14_BRNTAKEN)
12590 /* Now determine the call target, its name, value,
12592 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12593 r_indx, input_bfd))
12594 goto error_ret_free_internal;
12595 hash = (struct ppc_link_hash_entry *) h;
12602 sym_value = sym->st_value;
12603 if (sym_sec != NULL
12604 && sym_sec->output_section != NULL)
12607 else if (hash->elf.root.type == bfd_link_hash_defined
12608 || hash->elf.root.type == bfd_link_hash_defweak)
12610 sym_value = hash->elf.root.u.def.value;
12611 if (sym_sec->output_section != NULL)
12614 else if (hash->elf.root.type == bfd_link_hash_undefweak
12615 || hash->elf.root.type == bfd_link_hash_undefined)
12617 /* Recognise an old ABI func code entry sym, and
12618 use the func descriptor sym instead if it is
12620 if (hash->elf.root.root.string[0] == '.'
12621 && hash->oh != NULL)
12623 fdh = ppc_follow_link (hash->oh);
12624 if (fdh->elf.root.type == bfd_link_hash_defined
12625 || fdh->elf.root.type == bfd_link_hash_defweak)
12627 sym_sec = fdh->elf.root.u.def.section;
12628 sym_value = fdh->elf.root.u.def.value;
12629 if (sym_sec->output_section != NULL)
12638 bfd_set_error (bfd_error_bad_value);
12639 goto error_ret_free_internal;
12646 sym_value += irela->r_addend;
12647 destination = (sym_value
12648 + sym_sec->output_offset
12649 + sym_sec->output_section->vma);
12650 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12655 code_sec = sym_sec;
12656 code_value = sym_value;
12657 opd = get_opd_info (sym_sec);
12662 if (hash == NULL && opd->adjust != NULL)
12664 long adjust = opd->adjust[OPD_NDX (sym_value)];
12667 code_value += adjust;
12668 sym_value += adjust;
12670 dest = opd_entry_value (sym_sec, sym_value,
12671 &code_sec, &code_value, FALSE);
12672 if (dest != (bfd_vma) -1)
12674 destination = dest;
12677 /* Fixup old ABI sym to point at code
12679 hash->elf.root.type = bfd_link_hash_defweak;
12680 hash->elf.root.u.def.section = code_sec;
12681 hash->elf.root.u.def.value = code_value;
12686 /* Determine what (if any) linker stub is needed. */
12688 stub_type = ppc_type_of_stub (section, irela, &hash,
12689 &plt_ent, destination,
12692 if (stub_type != ppc_stub_plt_call)
12694 /* Check whether we need a TOC adjusting stub.
12695 Since the linker pastes together pieces from
12696 different object files when creating the
12697 _init and _fini functions, it may be that a
12698 call to what looks like a local sym is in
12699 fact a call needing a TOC adjustment. */
12700 if (code_sec != NULL
12701 && code_sec->output_section != NULL
12702 && (htab->sec_info[code_sec->id].toc_off
12703 != htab->sec_info[section->id].toc_off)
12704 && (code_sec->has_toc_reloc
12705 || code_sec->makes_toc_func_call))
12706 stub_type = ppc_stub_long_branch_r2off;
12709 if (stub_type == ppc_stub_none)
12712 /* __tls_get_addr calls might be eliminated. */
12713 if (stub_type != ppc_stub_plt_call
12715 && (hash == htab->tls_get_addr
12716 || hash == htab->tls_get_addr_fd)
12717 && section->has_tls_reloc
12718 && irela != internal_relocs)
12720 /* Get tls info. */
12721 unsigned char *tls_mask;
12723 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12724 irela - 1, input_bfd))
12725 goto error_ret_free_internal;
12726 if (*tls_mask != 0)
12730 if (stub_type == ppc_stub_plt_call)
12733 && htab->params->plt_localentry0 != 0
12734 && is_elfv2_localentry0 (&hash->elf))
12735 htab->has_plt_localentry0 = 1;
12736 else if (irela + 1 < irelaend
12737 && irela[1].r_offset == irela->r_offset + 4
12738 && (ELF64_R_TYPE (irela[1].r_info)
12739 == R_PPC64_TOCSAVE))
12741 if (!tocsave_find (htab, INSERT,
12742 &local_syms, irela + 1, input_bfd))
12743 goto error_ret_free_internal;
12746 stub_type = ppc_stub_plt_call_r2save;
12749 /* Support for grouping stub sections. */
12750 id_sec = htab->sec_info[section->id].u.group->link_sec;
12752 /* Get the name of this stub. */
12753 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12755 goto error_ret_free_internal;
12757 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12758 stub_name, FALSE, FALSE);
12759 if (stub_entry != NULL)
12761 /* The proper stub has already been created. */
12763 if (stub_type == ppc_stub_plt_call_r2save)
12764 stub_entry->stub_type = stub_type;
12768 stub_entry = ppc_add_stub (stub_name, section, info);
12769 if (stub_entry == NULL)
12772 error_ret_free_internal:
12773 if (elf_section_data (section)->relocs == NULL)
12774 free (internal_relocs);
12775 error_ret_free_local:
12776 if (local_syms != NULL
12777 && (symtab_hdr->contents
12778 != (unsigned char *) local_syms))
12783 stub_entry->stub_type = stub_type;
12784 if (stub_type != ppc_stub_plt_call
12785 && stub_type != ppc_stub_plt_call_r2save)
12787 stub_entry->target_value = code_value;
12788 stub_entry->target_section = code_sec;
12792 stub_entry->target_value = sym_value;
12793 stub_entry->target_section = sym_sec;
12795 stub_entry->h = hash;
12796 stub_entry->plt_ent = plt_ent;
12797 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12799 if (stub_entry->h != NULL)
12800 htab->stub_globals += 1;
12803 /* We're done with the internal relocs, free them. */
12804 if (elf_section_data (section)->relocs != internal_relocs)
12805 free (internal_relocs);
12808 if (local_syms != NULL
12809 && symtab_hdr->contents != (unsigned char *) local_syms)
12811 if (!info->keep_memory)
12814 symtab_hdr->contents = (unsigned char *) local_syms;
12818 /* We may have added some stubs. Find out the new size of the
12820 for (group = htab->group; group != NULL; group = group->next)
12821 if (group->stub_sec != NULL)
12823 asection *stub_sec = group->stub_sec;
12825 if (htab->stub_iteration <= STUB_SHRINK_ITER
12826 || stub_sec->rawsize < stub_sec->size)
12827 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12828 stub_sec->rawsize = stub_sec->size;
12829 stub_sec->size = 0;
12830 stub_sec->reloc_count = 0;
12831 stub_sec->flags &= ~SEC_RELOC;
12834 htab->brlt->size = 0;
12835 htab->brlt->reloc_count = 0;
12836 htab->brlt->flags &= ~SEC_RELOC;
12837 if (htab->relbrlt != NULL)
12838 htab->relbrlt->size = 0;
12840 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12842 for (group = htab->group; group != NULL; group = group->next)
12843 if (group->needs_save_res)
12844 group->stub_sec->size += htab->sfpr->size;
12846 if (info->emitrelocations
12847 && htab->glink != NULL && htab->glink->size != 0)
12849 htab->glink->reloc_count = 1;
12850 htab->glink->flags |= SEC_RELOC;
12853 if (htab->glink_eh_frame != NULL
12854 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12855 && htab->glink_eh_frame->output_section->size != 0)
12857 size_t size = 0, align = 4;
12859 for (group = htab->group; group != NULL; group = group->next)
12860 if (group->stub_sec != NULL)
12861 size += stub_eh_frame_size (group, align);
12862 if (htab->glink != NULL && htab->glink->size != 0)
12863 size += (24 + align - 1) & -align;
12865 size += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
12866 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
12867 size = (size + align - 1) & -align;
12868 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12869 htab->glink_eh_frame->size = size;
12872 if (htab->params->plt_stub_align != 0)
12873 for (group = htab->group; group != NULL; group = group->next)
12874 if (group->stub_sec != NULL)
12875 group->stub_sec->size = ((group->stub_sec->size
12876 + (1 << htab->params->plt_stub_align) - 1)
12877 & -(1 << htab->params->plt_stub_align));
12879 for (group = htab->group; group != NULL; group = group->next)
12880 if (group->stub_sec != NULL
12881 && group->stub_sec->rawsize != group->stub_sec->size
12882 && (htab->stub_iteration <= STUB_SHRINK_ITER
12883 || group->stub_sec->rawsize < group->stub_sec->size))
12887 && (htab->glink_eh_frame == NULL
12888 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12891 /* Ask the linker to do its stuff. */
12892 (*htab->params->layout_sections_again) ();
12895 if (htab->glink_eh_frame != NULL
12896 && htab->glink_eh_frame->size != 0)
12899 bfd_byte *p, *last_fde;
12900 size_t last_fde_len, size, align, pad;
12901 struct map_stub *group;
12903 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12906 htab->glink_eh_frame->contents = p;
12910 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12911 /* CIE length (rewrite in case little-endian). */
12912 last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4;
12913 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12914 p += last_fde_len + 4;
12916 for (group = htab->group; group != NULL; group = group->next)
12917 if (group->stub_sec != NULL)
12920 last_fde_len = stub_eh_frame_size (group, align) - 4;
12922 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12925 val = p - htab->glink_eh_frame->contents;
12926 bfd_put_32 (htab->elf.dynobj, val, p);
12928 /* Offset to stub section, written later. */
12930 /* stub section size. */
12931 bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p);
12933 /* Augmentation. */
12935 if (group->tls_get_addr_opt_bctrl != -1u)
12937 unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4;
12939 /* This FDE needs more than just the default.
12940 Describe __tls_get_addr_opt stub LR. */
12942 *p++ = DW_CFA_advance_loc + to_bctrl;
12943 else if (to_bctrl < 256)
12945 *p++ = DW_CFA_advance_loc1;
12948 else if (to_bctrl < 65536)
12950 *p++ = DW_CFA_advance_loc2;
12951 bfd_put_16 (htab->elf.dynobj, to_bctrl, p);
12956 *p++ = DW_CFA_advance_loc4;
12957 bfd_put_32 (htab->elf.dynobj, to_bctrl, p);
12960 *p++ = DW_CFA_offset_extended_sf;
12962 *p++ = -(STK_LINKER (htab) / 8) & 0x7f;
12963 *p++ = DW_CFA_advance_loc + 4;
12964 *p++ = DW_CFA_restore_extended;
12968 p = last_fde + last_fde_len + 4;
12970 if (htab->glink != NULL && htab->glink->size != 0)
12973 last_fde_len = ((24 + align - 1) & -align) - 4;
12975 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12978 val = p - htab->glink_eh_frame->contents;
12979 bfd_put_32 (htab->elf.dynobj, val, p);
12981 /* Offset to .glink, written later. */
12984 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12986 /* Augmentation. */
12989 *p++ = DW_CFA_advance_loc + 1;
12990 *p++ = DW_CFA_register;
12992 *p++ = htab->opd_abi ? 12 : 0;
12993 *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7);
12994 *p++ = DW_CFA_restore_extended;
12996 p += ((24 + align - 1) & -align) - 24;
12998 /* Subsume any padding into the last FDE if user .eh_frame
12999 sections are aligned more than glink_eh_frame. Otherwise any
13000 zero padding will be seen as a terminator. */
13001 align = 1ul << htab->glink_eh_frame->output_section->alignment_power;
13002 size = p - htab->glink_eh_frame->contents;
13003 pad = ((size + align - 1) & -align) - size;
13004 htab->glink_eh_frame->size = size + pad;
13005 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
13008 maybe_strip_output (info, htab->brlt);
13009 if (htab->glink_eh_frame != NULL)
13010 maybe_strip_output (info, htab->glink_eh_frame);
13015 /* Called after we have determined section placement. If sections
13016 move, we'll be called again. Provide a value for TOCstart. */
13019 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
13022 bfd_vma TOCstart, adjust;
13026 struct elf_link_hash_entry *h;
13027 struct elf_link_hash_table *htab = elf_hash_table (info);
13029 if (is_elf_hash_table (htab)
13030 && htab->hgot != NULL)
13034 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
13035 if (is_elf_hash_table (htab))
13039 && h->root.type == bfd_link_hash_defined
13040 && !h->root.linker_def
13041 && (!is_elf_hash_table (htab)
13042 || h->def_regular))
13044 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
13045 + h->root.u.def.section->output_offset
13046 + h->root.u.def.section->output_section->vma);
13047 _bfd_set_gp_value (obfd, TOCstart);
13052 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
13053 order. The TOC starts where the first of these sections starts. */
13054 s = bfd_get_section_by_name (obfd, ".got");
13055 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13056 s = bfd_get_section_by_name (obfd, ".toc");
13057 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13058 s = bfd_get_section_by_name (obfd, ".tocbss");
13059 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13060 s = bfd_get_section_by_name (obfd, ".plt");
13061 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
13063 /* This may happen for
13064 o references to TOC base (SYM@toc / TOC[tc0]) without a
13066 o bad linker script
13067 o --gc-sections and empty TOC sections
13069 FIXME: Warn user? */
13071 /* Look for a likely section. We probably won't even be
13073 for (s = obfd->sections; s != NULL; s = s->next)
13074 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
13076 == (SEC_ALLOC | SEC_SMALL_DATA))
13079 for (s = obfd->sections; s != NULL; s = s->next)
13080 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
13081 == (SEC_ALLOC | SEC_SMALL_DATA))
13084 for (s = obfd->sections; s != NULL; s = s->next)
13085 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
13089 for (s = obfd->sections; s != NULL; s = s->next)
13090 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
13096 TOCstart = s->output_section->vma + s->output_offset;
13098 /* Force alignment. */
13099 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
13100 TOCstart -= adjust;
13101 _bfd_set_gp_value (obfd, TOCstart);
13103 if (info != NULL && s != NULL)
13105 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13109 if (htab->elf.hgot != NULL)
13111 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
13112 htab->elf.hgot->root.u.def.section = s;
13117 struct bfd_link_hash_entry *bh = NULL;
13118 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
13119 s, TOC_BASE_OFF - adjust,
13120 NULL, FALSE, FALSE, &bh);
13126 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
13127 write out any global entry stubs. */
13130 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
13132 struct bfd_link_info *info;
13133 struct ppc_link_hash_table *htab;
13134 struct plt_entry *pent;
13137 if (h->root.type == bfd_link_hash_indirect)
13140 if (!h->pointer_equality_needed)
13143 if (h->def_regular)
13147 htab = ppc_hash_table (info);
13152 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
13153 if (pent->plt.offset != (bfd_vma) -1
13154 && pent->addend == 0)
13160 p = s->contents + h->root.u.def.value;
13161 plt = htab->elf.splt;
13162 if (!htab->elf.dynamic_sections_created
13163 || h->dynindx == -1)
13164 plt = htab->elf.iplt;
13165 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
13166 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
13168 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
13170 info->callbacks->einfo
13171 (_("%P: linkage table error against `%T'\n"),
13172 h->root.root.string);
13173 bfd_set_error (bfd_error_bad_value);
13174 htab->stub_error = TRUE;
13177 htab->stub_count[ppc_stub_global_entry - 1] += 1;
13178 if (htab->params->emit_stub_syms)
13180 size_t len = strlen (h->root.root.string);
13181 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
13186 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
13187 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
13190 if (h->root.type == bfd_link_hash_new)
13192 h->root.type = bfd_link_hash_defined;
13193 h->root.u.def.section = s;
13194 h->root.u.def.value = p - s->contents;
13195 h->ref_regular = 1;
13196 h->def_regular = 1;
13197 h->ref_regular_nonweak = 1;
13198 h->forced_local = 1;
13200 h->root.linker_def = 1;
13204 if (PPC_HA (off) != 0)
13206 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13209 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13211 bfd_put_32 (s->owner, MTCTR_R12, p);
13213 bfd_put_32 (s->owner, BCTR, p);
13219 /* Build all the stubs associated with the current output file.
13220 The stubs are kept in a hash table attached to the main linker
13221 hash table. This function is called via gldelf64ppc_finish. */
13224 ppc64_elf_build_stubs (struct bfd_link_info *info,
13227 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13228 struct map_stub *group;
13229 asection *stub_sec;
13231 int stub_sec_count = 0;
13236 /* Allocate memory to hold the linker stubs. */
13237 for (group = htab->group; group != NULL; group = group->next)
13238 if ((stub_sec = group->stub_sec) != NULL
13239 && stub_sec->size != 0)
13241 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13242 if (stub_sec->contents == NULL)
13244 stub_sec->size = 0;
13247 if (htab->glink != NULL && htab->glink->size != 0)
13252 /* Build the .glink plt call stub. */
13253 if (htab->params->emit_stub_syms)
13255 struct elf_link_hash_entry *h;
13256 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13257 TRUE, FALSE, FALSE);
13260 if (h->root.type == bfd_link_hash_new)
13262 h->root.type = bfd_link_hash_defined;
13263 h->root.u.def.section = htab->glink;
13264 h->root.u.def.value = 8;
13265 h->ref_regular = 1;
13266 h->def_regular = 1;
13267 h->ref_regular_nonweak = 1;
13268 h->forced_local = 1;
13270 h->root.linker_def = 1;
13273 plt0 = (htab->elf.splt->output_section->vma
13274 + htab->elf.splt->output_offset
13276 if (info->emitrelocations)
13278 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13281 r->r_offset = (htab->glink->output_offset
13282 + htab->glink->output_section->vma);
13283 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13284 r->r_addend = plt0;
13286 p = htab->glink->contents;
13287 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13288 bfd_put_64 (htab->glink->owner, plt0, p);
13292 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13294 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13296 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13298 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13300 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13302 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13304 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13306 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13308 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13310 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13315 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13317 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13319 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13321 bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p);
13323 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13325 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13327 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13329 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13331 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13333 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13335 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13337 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13339 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13342 bfd_put_32 (htab->glink->owner, BCTR, p);
13344 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13346 bfd_put_32 (htab->glink->owner, NOP, p);
13350 /* Build the .glink lazy link call stubs. */
13352 while (p < htab->glink->contents + htab->glink->rawsize)
13358 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13363 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13365 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13370 bfd_put_32 (htab->glink->owner,
13371 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13376 /* Build .glink global entry stubs. */
13377 if (htab->glink->size > htab->glink->rawsize)
13378 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13381 if (htab->brlt != NULL && htab->brlt->size != 0)
13383 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13385 if (htab->brlt->contents == NULL)
13388 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13390 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13391 htab->relbrlt->size);
13392 if (htab->relbrlt->contents == NULL)
13396 /* Build the stubs as directed by the stub hash table. */
13397 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13399 for (group = htab->group; group != NULL; group = group->next)
13400 if (group->needs_save_res)
13402 stub_sec = group->stub_sec;
13403 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13405 if (htab->params->emit_stub_syms)
13409 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13410 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13413 stub_sec->size += htab->sfpr->size;
13416 if (htab->relbrlt != NULL)
13417 htab->relbrlt->reloc_count = 0;
13419 if (htab->params->plt_stub_align != 0)
13420 for (group = htab->group; group != NULL; group = group->next)
13421 if ((stub_sec = group->stub_sec) != NULL)
13422 stub_sec->size = ((stub_sec->size
13423 + (1 << htab->params->plt_stub_align) - 1)
13424 & -(1 << htab->params->plt_stub_align));
13426 for (group = htab->group; group != NULL; group = group->next)
13427 if ((stub_sec = group->stub_sec) != NULL)
13429 stub_sec_count += 1;
13430 if (stub_sec->rawsize != stub_sec->size
13431 && (htab->stub_iteration <= STUB_SHRINK_ITER
13432 || stub_sec->rawsize < stub_sec->size))
13438 htab->stub_error = TRUE;
13439 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13442 if (htab->stub_error)
13447 *stats = bfd_malloc (500);
13448 if (*stats == NULL)
13451 sprintf (*stats, _("linker stubs in %u group%s\n"
13453 " toc adjust %lu\n"
13454 " long branch %lu\n"
13455 " long toc adj %lu\n"
13457 " plt call toc %lu\n"
13458 " global entry %lu"),
13460 stub_sec_count == 1 ? "" : "s",
13461 htab->stub_count[ppc_stub_long_branch - 1],
13462 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13463 htab->stub_count[ppc_stub_plt_branch - 1],
13464 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13465 htab->stub_count[ppc_stub_plt_call - 1],
13466 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13467 htab->stub_count[ppc_stub_global_entry - 1]);
13472 /* What to do when ld finds relocations against symbols defined in
13473 discarded sections. */
13475 static unsigned int
13476 ppc64_elf_action_discarded (asection *sec)
13478 if (strcmp (".opd", sec->name) == 0)
13481 if (strcmp (".toc", sec->name) == 0)
13484 if (strcmp (".toc1", sec->name) == 0)
13487 return _bfd_elf_default_action_discarded (sec);
13490 /* The RELOCATE_SECTION function is called by the ELF backend linker
13491 to handle the relocations for a section.
13493 The relocs are always passed as Rela structures; if the section
13494 actually uses Rel structures, the r_addend field will always be
13497 This function is responsible for adjust the section contents as
13498 necessary, and (if using Rela relocs and generating a
13499 relocatable output file) adjusting the reloc addend as
13502 This function does not have to worry about setting the reloc
13503 address or the reloc symbol index.
13505 LOCAL_SYMS is a pointer to the swapped in local symbols.
13507 LOCAL_SECTIONS is an array giving the section in the input file
13508 corresponding to the st_shndx field of each local symbol.
13510 The global hash table entry for the global symbols can be found
13511 via elf_sym_hashes (input_bfd).
13513 When generating relocatable output, this function must handle
13514 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13515 going to be the section symbol corresponding to the output
13516 section, which means that the addend must be adjusted
13520 ppc64_elf_relocate_section (bfd *output_bfd,
13521 struct bfd_link_info *info,
13523 asection *input_section,
13524 bfd_byte *contents,
13525 Elf_Internal_Rela *relocs,
13526 Elf_Internal_Sym *local_syms,
13527 asection **local_sections)
13529 struct ppc_link_hash_table *htab;
13530 Elf_Internal_Shdr *symtab_hdr;
13531 struct elf_link_hash_entry **sym_hashes;
13532 Elf_Internal_Rela *rel;
13533 Elf_Internal_Rela *wrel;
13534 Elf_Internal_Rela *relend;
13535 Elf_Internal_Rela outrel;
13537 struct got_entry **local_got_ents;
13539 bfd_boolean ret = TRUE;
13540 bfd_boolean is_opd;
13541 /* Assume 'at' branch hints. */
13542 bfd_boolean is_isa_v2 = TRUE;
13543 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13545 /* Initialize howto table if needed. */
13546 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13549 htab = ppc_hash_table (info);
13553 /* Don't relocate stub sections. */
13554 if (input_section->owner == htab->params->stub_bfd)
13557 BFD_ASSERT (is_ppc64_elf (input_bfd));
13559 local_got_ents = elf_local_got_ents (input_bfd);
13560 TOCstart = elf_gp (output_bfd);
13561 symtab_hdr = &elf_symtab_hdr (input_bfd);
13562 sym_hashes = elf_sym_hashes (input_bfd);
13563 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13565 rel = wrel = relocs;
13566 relend = relocs + input_section->reloc_count;
13567 for (; rel < relend; wrel++, rel++)
13569 enum elf_ppc64_reloc_type r_type;
13571 bfd_reloc_status_type r;
13572 Elf_Internal_Sym *sym;
13574 struct elf_link_hash_entry *h_elf;
13575 struct ppc_link_hash_entry *h;
13576 struct ppc_link_hash_entry *fdh;
13577 const char *sym_name;
13578 unsigned long r_symndx, toc_symndx;
13579 bfd_vma toc_addend;
13580 unsigned char tls_mask, tls_gd, tls_type;
13581 unsigned char sym_type;
13582 bfd_vma relocation;
13583 bfd_boolean unresolved_reloc;
13584 bfd_boolean warned;
13585 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13588 struct ppc_stub_hash_entry *stub_entry;
13589 bfd_vma max_br_offset;
13591 Elf_Internal_Rela orig_rel;
13592 reloc_howto_type *howto;
13593 struct reloc_howto_struct alt_howto;
13598 r_type = ELF64_R_TYPE (rel->r_info);
13599 r_symndx = ELF64_R_SYM (rel->r_info);
13601 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13602 symbol of the previous ADDR64 reloc. The symbol gives us the
13603 proper TOC base to use. */
13604 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13606 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13608 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13614 unresolved_reloc = FALSE;
13617 if (r_symndx < symtab_hdr->sh_info)
13619 /* It's a local symbol. */
13620 struct _opd_sec_data *opd;
13622 sym = local_syms + r_symndx;
13623 sec = local_sections[r_symndx];
13624 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13625 sym_type = ELF64_ST_TYPE (sym->st_info);
13626 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13627 opd = get_opd_info (sec);
13628 if (opd != NULL && opd->adjust != NULL)
13630 long adjust = opd->adjust[OPD_NDX (sym->st_value
13636 /* If this is a relocation against the opd section sym
13637 and we have edited .opd, adjust the reloc addend so
13638 that ld -r and ld --emit-relocs output is correct.
13639 If it is a reloc against some other .opd symbol,
13640 then the symbol value will be adjusted later. */
13641 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13642 rel->r_addend += adjust;
13644 relocation += adjust;
13650 bfd_boolean ignored;
13652 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13653 r_symndx, symtab_hdr, sym_hashes,
13654 h_elf, sec, relocation,
13655 unresolved_reloc, warned, ignored);
13656 sym_name = h_elf->root.root.string;
13657 sym_type = h_elf->type;
13659 && sec->owner == output_bfd
13660 && strcmp (sec->name, ".opd") == 0)
13662 /* This is a symbol defined in a linker script. All
13663 such are defined in output sections, even those
13664 defined by simple assignment from a symbol defined in
13665 an input section. Transfer the symbol to an
13666 appropriate input .opd section, so that a branch to
13667 this symbol will be mapped to the location specified
13668 by the opd entry. */
13669 struct bfd_link_order *lo;
13670 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13671 if (lo->type == bfd_indirect_link_order)
13673 asection *isec = lo->u.indirect.section;
13674 if (h_elf->root.u.def.value >= isec->output_offset
13675 && h_elf->root.u.def.value < (isec->output_offset
13678 h_elf->root.u.def.value -= isec->output_offset;
13679 h_elf->root.u.def.section = isec;
13686 h = (struct ppc_link_hash_entry *) h_elf;
13688 if (sec != NULL && discarded_section (sec))
13690 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13691 input_bfd, input_section,
13692 contents + rel->r_offset);
13693 wrel->r_offset = rel->r_offset;
13695 wrel->r_addend = 0;
13697 /* For ld -r, remove relocations in debug sections against
13698 symbols defined in discarded sections. Not done for
13699 non-debug to preserve relocs in .eh_frame which the
13700 eh_frame editing code expects to be present. */
13701 if (bfd_link_relocatable (info)
13702 && (input_section->flags & SEC_DEBUGGING))
13708 if (bfd_link_relocatable (info))
13711 if (h != NULL && &h->elf == htab->elf.hgot)
13713 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13714 sec = bfd_abs_section_ptr;
13715 unresolved_reloc = FALSE;
13718 /* TLS optimizations. Replace instruction sequences and relocs
13719 based on information we collected in tls_optimize. We edit
13720 RELOCS so that --emit-relocs will output something sensible
13721 for the final instruction stream. */
13726 tls_mask = h->tls_mask;
13727 else if (local_got_ents != NULL)
13729 struct plt_entry **local_plt = (struct plt_entry **)
13730 (local_got_ents + symtab_hdr->sh_info);
13731 unsigned char *lgot_masks = (unsigned char *)
13732 (local_plt + symtab_hdr->sh_info);
13733 tls_mask = lgot_masks[r_symndx];
13736 && (r_type == R_PPC64_TLS
13737 || r_type == R_PPC64_TLSGD
13738 || r_type == R_PPC64_TLSLD))
13740 /* Check for toc tls entries. */
13741 unsigned char *toc_tls;
13743 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13744 &local_syms, rel, input_bfd))
13748 tls_mask = *toc_tls;
13751 /* Check that tls relocs are used with tls syms, and non-tls
13752 relocs are used with non-tls syms. */
13753 if (r_symndx != STN_UNDEF
13754 && r_type != R_PPC64_NONE
13756 || h->elf.root.type == bfd_link_hash_defined
13757 || h->elf.root.type == bfd_link_hash_defweak)
13758 && (IS_PPC64_TLS_RELOC (r_type)
13759 != (sym_type == STT_TLS
13760 || (sym_type == STT_SECTION
13761 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13764 && (r_type == R_PPC64_TLS
13765 || r_type == R_PPC64_TLSGD
13766 || r_type == R_PPC64_TLSLD))
13767 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13770 info->callbacks->einfo
13771 (!IS_PPC64_TLS_RELOC (r_type)
13772 /* xgettext:c-format */
13773 ? _("%H: %s used with TLS symbol `%T'\n")
13774 /* xgettext:c-format */
13775 : _("%H: %s used with non-TLS symbol `%T'\n"),
13776 input_bfd, input_section, rel->r_offset,
13777 ppc64_elf_howto_table[r_type]->name,
13781 /* Ensure reloc mapping code below stays sane. */
13782 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13783 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13784 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13785 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13786 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13787 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13788 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13789 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13790 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13791 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13799 case R_PPC64_LO_DS_OPT:
13800 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13801 if ((insn & (0x3f << 26)) != 58u << 26)
13803 insn += (14u << 26) - (58u << 26);
13804 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13805 r_type = R_PPC64_TOC16_LO;
13806 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13809 case R_PPC64_TOC16:
13810 case R_PPC64_TOC16_LO:
13811 case R_PPC64_TOC16_DS:
13812 case R_PPC64_TOC16_LO_DS:
13814 /* Check for toc tls entries. */
13815 unsigned char *toc_tls;
13818 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13819 &local_syms, rel, input_bfd);
13825 tls_mask = *toc_tls;
13826 if (r_type == R_PPC64_TOC16_DS
13827 || r_type == R_PPC64_TOC16_LO_DS)
13830 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13835 /* If we found a GD reloc pair, then we might be
13836 doing a GD->IE transition. */
13839 tls_gd = TLS_TPRELGD;
13840 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13843 else if (retval == 3)
13845 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13853 case R_PPC64_GOT_TPREL16_HI:
13854 case R_PPC64_GOT_TPREL16_HA:
13856 && (tls_mask & TLS_TPREL) == 0)
13858 rel->r_offset -= d_offset;
13859 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13860 r_type = R_PPC64_NONE;
13861 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13865 case R_PPC64_GOT_TPREL16_DS:
13866 case R_PPC64_GOT_TPREL16_LO_DS:
13868 && (tls_mask & TLS_TPREL) == 0)
13871 insn = bfd_get_32 (input_bfd,
13872 contents + rel->r_offset - d_offset);
13874 insn |= 0x3c0d0000; /* addis 0,13,0 */
13875 bfd_put_32 (input_bfd, insn,
13876 contents + rel->r_offset - d_offset);
13877 r_type = R_PPC64_TPREL16_HA;
13878 if (toc_symndx != 0)
13880 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13881 rel->r_addend = toc_addend;
13882 /* We changed the symbol. Start over in order to
13883 get h, sym, sec etc. right. */
13887 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13893 && (tls_mask & TLS_TPREL) == 0)
13895 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13896 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13899 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13900 /* Was PPC64_TLS which sits on insn boundary, now
13901 PPC64_TPREL16_LO which is at low-order half-word. */
13902 rel->r_offset += d_offset;
13903 r_type = R_PPC64_TPREL16_LO;
13904 if (toc_symndx != 0)
13906 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13907 rel->r_addend = toc_addend;
13908 /* We changed the symbol. Start over in order to
13909 get h, sym, sec etc. right. */
13913 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13917 case R_PPC64_GOT_TLSGD16_HI:
13918 case R_PPC64_GOT_TLSGD16_HA:
13919 tls_gd = TLS_TPRELGD;
13920 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13924 case R_PPC64_GOT_TLSLD16_HI:
13925 case R_PPC64_GOT_TLSLD16_HA:
13926 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13929 if ((tls_mask & tls_gd) != 0)
13930 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13931 + R_PPC64_GOT_TPREL16_DS);
13934 rel->r_offset -= d_offset;
13935 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13936 r_type = R_PPC64_NONE;
13938 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13942 case R_PPC64_GOT_TLSGD16:
13943 case R_PPC64_GOT_TLSGD16_LO:
13944 tls_gd = TLS_TPRELGD;
13945 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13949 case R_PPC64_GOT_TLSLD16:
13950 case R_PPC64_GOT_TLSLD16_LO:
13951 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13953 unsigned int insn1, insn2;
13957 offset = (bfd_vma) -1;
13958 /* If not using the newer R_PPC64_TLSGD/LD to mark
13959 __tls_get_addr calls, we must trust that the call
13960 stays with its arg setup insns, ie. that the next
13961 reloc is the __tls_get_addr call associated with
13962 the current reloc. Edit both insns. */
13963 if (input_section->has_tls_get_addr_call
13964 && rel + 1 < relend
13965 && branch_reloc_hash_match (input_bfd, rel + 1,
13966 htab->tls_get_addr,
13967 htab->tls_get_addr_fd))
13968 offset = rel[1].r_offset;
13969 /* We read the low GOT_TLS (or TOC16) insn because we
13970 need to keep the destination reg. It may be
13971 something other than the usual r3, and moved to r3
13972 before the call by intervening code. */
13973 insn1 = bfd_get_32 (input_bfd,
13974 contents + rel->r_offset - d_offset);
13975 if ((tls_mask & tls_gd) != 0)
13978 insn1 &= (0x1f << 21) | (0x1f << 16);
13979 insn1 |= 58 << 26; /* ld */
13980 insn2 = 0x7c636a14; /* add 3,3,13 */
13981 if (offset != (bfd_vma) -1)
13982 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13983 if ((tls_mask & TLS_EXPLICIT) == 0)
13984 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13985 + R_PPC64_GOT_TPREL16_DS);
13987 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13988 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13993 insn1 &= 0x1f << 21;
13994 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13995 insn2 = 0x38630000; /* addi 3,3,0 */
13998 /* Was an LD reloc. */
14000 sec = local_sections[toc_symndx];
14002 r_symndx < symtab_hdr->sh_info;
14004 if (local_sections[r_symndx] == sec)
14006 if (r_symndx >= symtab_hdr->sh_info)
14007 r_symndx = STN_UNDEF;
14008 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14009 if (r_symndx != STN_UNDEF)
14010 rel->r_addend -= (local_syms[r_symndx].st_value
14011 + sec->output_offset
14012 + sec->output_section->vma);
14014 else if (toc_symndx != 0)
14016 r_symndx = toc_symndx;
14017 rel->r_addend = toc_addend;
14019 r_type = R_PPC64_TPREL16_HA;
14020 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14021 if (offset != (bfd_vma) -1)
14023 rel[1].r_info = ELF64_R_INFO (r_symndx,
14024 R_PPC64_TPREL16_LO);
14025 rel[1].r_offset = offset + d_offset;
14026 rel[1].r_addend = rel->r_addend;
14029 bfd_put_32 (input_bfd, insn1,
14030 contents + rel->r_offset - d_offset);
14031 if (offset != (bfd_vma) -1)
14032 bfd_put_32 (input_bfd, insn2, contents + offset);
14033 if ((tls_mask & tls_gd) == 0
14034 && (tls_gd == 0 || toc_symndx != 0))
14036 /* We changed the symbol. Start over in order
14037 to get h, sym, sec etc. right. */
14043 case R_PPC64_TLSGD:
14044 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
14046 unsigned int insn2;
14047 bfd_vma offset = rel->r_offset;
14049 if ((tls_mask & TLS_TPRELGD) != 0)
14052 r_type = R_PPC64_NONE;
14053 insn2 = 0x7c636a14; /* add 3,3,13 */
14058 if (toc_symndx != 0)
14060 r_symndx = toc_symndx;
14061 rel->r_addend = toc_addend;
14063 r_type = R_PPC64_TPREL16_LO;
14064 rel->r_offset = offset + d_offset;
14065 insn2 = 0x38630000; /* addi 3,3,0 */
14067 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14068 /* Zap the reloc on the _tls_get_addr call too. */
14069 BFD_ASSERT (offset == rel[1].r_offset);
14070 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14071 bfd_put_32 (input_bfd, insn2, contents + offset);
14072 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
14077 case R_PPC64_TLSLD:
14078 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
14080 unsigned int insn2;
14081 bfd_vma offset = rel->r_offset;
14084 sec = local_sections[toc_symndx];
14086 r_symndx < symtab_hdr->sh_info;
14088 if (local_sections[r_symndx] == sec)
14090 if (r_symndx >= symtab_hdr->sh_info)
14091 r_symndx = STN_UNDEF;
14092 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
14093 if (r_symndx != STN_UNDEF)
14094 rel->r_addend -= (local_syms[r_symndx].st_value
14095 + sec->output_offset
14096 + sec->output_section->vma);
14098 r_type = R_PPC64_TPREL16_LO;
14099 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14100 rel->r_offset = offset + d_offset;
14101 /* Zap the reloc on the _tls_get_addr call too. */
14102 BFD_ASSERT (offset == rel[1].r_offset);
14103 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
14104 insn2 = 0x38630000; /* addi 3,3,0 */
14105 bfd_put_32 (input_bfd, insn2, contents + offset);
14110 case R_PPC64_DTPMOD64:
14111 if (rel + 1 < relend
14112 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
14113 && rel[1].r_offset == rel->r_offset + 8)
14115 if ((tls_mask & TLS_GD) == 0)
14117 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
14118 if ((tls_mask & TLS_TPRELGD) != 0)
14119 r_type = R_PPC64_TPREL64;
14122 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14123 r_type = R_PPC64_NONE;
14125 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14130 if ((tls_mask & TLS_LD) == 0)
14132 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
14133 r_type = R_PPC64_NONE;
14134 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14139 case R_PPC64_TPREL64:
14140 if ((tls_mask & TLS_TPREL) == 0)
14142 r_type = R_PPC64_NONE;
14143 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14147 case R_PPC64_ENTRY:
14148 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
14149 if (!bfd_link_pic (info)
14150 && !info->traditional_format
14151 && relocation + 0x80008000 <= 0xffffffff)
14153 unsigned int insn1, insn2;
14155 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14156 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14157 if ((insn1 & ~0xfffc) == LD_R2_0R12
14158 && insn2 == ADD_R2_R2_R12)
14160 bfd_put_32 (input_bfd,
14161 LIS_R2 + PPC_HA (relocation),
14162 contents + rel->r_offset);
14163 bfd_put_32 (input_bfd,
14164 ADDI_R2_R2 + PPC_LO (relocation),
14165 contents + rel->r_offset + 4);
14170 relocation -= (rel->r_offset
14171 + input_section->output_offset
14172 + input_section->output_section->vma);
14173 if (relocation + 0x80008000 <= 0xffffffff)
14175 unsigned int insn1, insn2;
14177 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14178 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14179 if ((insn1 & ~0xfffc) == LD_R2_0R12
14180 && insn2 == ADD_R2_R2_R12)
14182 bfd_put_32 (input_bfd,
14183 ADDIS_R2_R12 + PPC_HA (relocation),
14184 contents + rel->r_offset);
14185 bfd_put_32 (input_bfd,
14186 ADDI_R2_R2 + PPC_LO (relocation),
14187 contents + rel->r_offset + 4);
14193 case R_PPC64_REL16_HA:
14194 /* If we are generating a non-PIC executable, edit
14195 . 0: addis 2,12,.TOC.-0b@ha
14196 . addi 2,2,.TOC.-0b@l
14197 used by ELFv2 global entry points to set up r2, to
14200 if .TOC. is in range. */
14201 if (!bfd_link_pic (info)
14202 && !info->traditional_format
14204 && rel->r_addend == d_offset
14205 && h != NULL && &h->elf == htab->elf.hgot
14206 && rel + 1 < relend
14207 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14208 && rel[1].r_offset == rel->r_offset + 4
14209 && rel[1].r_addend == rel->r_addend + 4
14210 && relocation + 0x80008000 <= 0xffffffff)
14212 unsigned int insn1, insn2;
14213 bfd_vma offset = rel->r_offset - d_offset;
14214 insn1 = bfd_get_32 (input_bfd, contents + offset);
14215 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14216 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14217 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14219 r_type = R_PPC64_ADDR16_HA;
14220 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14221 rel->r_addend -= d_offset;
14222 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14223 rel[1].r_addend -= d_offset + 4;
14224 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14230 /* Handle other relocations that tweak non-addend part of insn. */
14232 max_br_offset = 1 << 25;
14233 addend = rel->r_addend;
14234 reloc_dest = DEST_NORMAL;
14240 case R_PPC64_TOCSAVE:
14241 if (relocation + addend == (rel->r_offset
14242 + input_section->output_offset
14243 + input_section->output_section->vma)
14244 && tocsave_find (htab, NO_INSERT,
14245 &local_syms, rel, input_bfd))
14247 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14249 || insn == CROR_151515 || insn == CROR_313131)
14250 bfd_put_32 (input_bfd,
14251 STD_R2_0R1 + STK_TOC (htab),
14252 contents + rel->r_offset);
14256 /* Branch taken prediction relocations. */
14257 case R_PPC64_ADDR14_BRTAKEN:
14258 case R_PPC64_REL14_BRTAKEN:
14259 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14260 /* Fall through. */
14262 /* Branch not taken prediction relocations. */
14263 case R_PPC64_ADDR14_BRNTAKEN:
14264 case R_PPC64_REL14_BRNTAKEN:
14265 insn |= bfd_get_32 (input_bfd,
14266 contents + rel->r_offset) & ~(0x01 << 21);
14267 /* Fall through. */
14269 case R_PPC64_REL14:
14270 max_br_offset = 1 << 15;
14271 /* Fall through. */
14273 case R_PPC64_REL24:
14274 /* Calls to functions with a different TOC, such as calls to
14275 shared objects, need to alter the TOC pointer. This is
14276 done using a linkage stub. A REL24 branching to these
14277 linkage stubs needs to be followed by a nop, as the nop
14278 will be replaced with an instruction to restore the TOC
14283 && h->oh->is_func_descriptor)
14284 fdh = ppc_follow_link (h->oh);
14285 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14287 if (stub_entry != NULL
14288 && (stub_entry->stub_type == ppc_stub_plt_call
14289 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14290 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14291 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14293 bfd_boolean can_plt_call = FALSE;
14295 if (stub_entry->stub_type == ppc_stub_plt_call
14297 && htab->params->plt_localentry0 != 0
14298 && is_elfv2_localentry0 (&h->elf))
14300 /* The function doesn't use or change r2. */
14301 can_plt_call = TRUE;
14304 /* All of these stubs may modify r2, so there must be a
14305 branch and link followed by a nop. The nop is
14306 replaced by an insn to restore r2. */
14307 else if (rel->r_offset + 8 <= input_section->size)
14311 br = bfd_get_32 (input_bfd,
14312 contents + rel->r_offset);
14317 nop = bfd_get_32 (input_bfd,
14318 contents + rel->r_offset + 4);
14320 || nop == CROR_151515 || nop == CROR_313131)
14323 && (h == htab->tls_get_addr_fd
14324 || h == htab->tls_get_addr)
14325 && htab->params->tls_get_addr_opt)
14327 /* Special stub used, leave nop alone. */
14330 bfd_put_32 (input_bfd,
14331 LD_R2_0R1 + STK_TOC (htab),
14332 contents + rel->r_offset + 4);
14333 can_plt_call = TRUE;
14338 if (!can_plt_call && h != NULL)
14340 const char *name = h->elf.root.root.string;
14345 if (strncmp (name, "__libc_start_main", 17) == 0
14346 && (name[17] == 0 || name[17] == '@'))
14348 /* Allow crt1 branch to go via a toc adjusting
14349 stub. Other calls that never return could do
14350 the same, if we could detect such. */
14351 can_plt_call = TRUE;
14357 /* g++ as of 20130507 emits self-calls without a
14358 following nop. This is arguably wrong since we
14359 have conflicting information. On the one hand a
14360 global symbol and on the other a local call
14361 sequence, but don't error for this special case.
14362 It isn't possible to cheaply verify we have
14363 exactly such a call. Allow all calls to the same
14365 asection *code_sec = sec;
14367 if (get_opd_info (sec) != NULL)
14369 bfd_vma off = (relocation + addend
14370 - sec->output_section->vma
14371 - sec->output_offset);
14373 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14375 if (code_sec == input_section)
14376 can_plt_call = TRUE;
14381 if (stub_entry->stub_type == ppc_stub_plt_call
14382 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14383 info->callbacks->einfo
14384 /* xgettext:c-format */
14385 (_("%H: call to `%T' lacks nop, can't restore toc; "
14386 "recompile with -fPIC\n"),
14387 input_bfd, input_section, rel->r_offset, sym_name);
14389 info->callbacks->einfo
14390 /* xgettext:c-format */
14391 (_("%H: call to `%T' lacks nop, can't restore toc; "
14392 "(-mcmodel=small toc adjust stub)\n"),
14393 input_bfd, input_section, rel->r_offset, sym_name);
14395 bfd_set_error (bfd_error_bad_value);
14400 && (stub_entry->stub_type == ppc_stub_plt_call
14401 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14402 unresolved_reloc = FALSE;
14405 if ((stub_entry == NULL
14406 || stub_entry->stub_type == ppc_stub_long_branch
14407 || stub_entry->stub_type == ppc_stub_plt_branch)
14408 && get_opd_info (sec) != NULL)
14410 /* The branch destination is the value of the opd entry. */
14411 bfd_vma off = (relocation + addend
14412 - sec->output_section->vma
14413 - sec->output_offset);
14414 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14415 if (dest != (bfd_vma) -1)
14419 reloc_dest = DEST_OPD;
14423 /* If the branch is out of reach we ought to have a long
14425 from = (rel->r_offset
14426 + input_section->output_offset
14427 + input_section->output_section->vma);
14429 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14433 if (stub_entry != NULL
14434 && (stub_entry->stub_type == ppc_stub_long_branch
14435 || stub_entry->stub_type == ppc_stub_plt_branch)
14436 && (r_type == R_PPC64_ADDR14_BRTAKEN
14437 || r_type == R_PPC64_ADDR14_BRNTAKEN
14438 || (relocation + addend - from + max_br_offset
14439 < 2 * max_br_offset)))
14440 /* Don't use the stub if this branch is in range. */
14443 if (stub_entry != NULL)
14445 /* Munge up the value and addend so that we call the stub
14446 rather than the procedure directly. */
14447 asection *stub_sec = stub_entry->group->stub_sec;
14449 if (stub_entry->stub_type == ppc_stub_save_res)
14450 relocation += (stub_sec->output_offset
14451 + stub_sec->output_section->vma
14452 + stub_sec->size - htab->sfpr->size
14453 - htab->sfpr->output_offset
14454 - htab->sfpr->output_section->vma);
14456 relocation = (stub_entry->stub_offset
14457 + stub_sec->output_offset
14458 + stub_sec->output_section->vma);
14460 reloc_dest = DEST_STUB;
14462 if ((stub_entry->stub_type == ppc_stub_plt_call
14463 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14464 && (ALWAYS_EMIT_R2SAVE
14465 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14466 && rel + 1 < relend
14467 && rel[1].r_offset == rel->r_offset + 4
14468 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14476 /* Set 'a' bit. This is 0b00010 in BO field for branch
14477 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14478 for branch on CTR insns (BO == 1a00t or 1a01t). */
14479 if ((insn & (0x14 << 21)) == (0x04 << 21))
14480 insn |= 0x02 << 21;
14481 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14482 insn |= 0x08 << 21;
14488 /* Invert 'y' bit if not the default. */
14489 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14490 insn ^= 0x01 << 21;
14493 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14496 /* NOP out calls to undefined weak functions.
14497 We can thus call a weak function without first
14498 checking whether the function is defined. */
14500 && h->elf.root.type == bfd_link_hash_undefweak
14501 && h->elf.dynindx == -1
14502 && r_type == R_PPC64_REL24
14506 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14512 /* Set `addend'. */
14517 info->callbacks->einfo
14518 /* xgettext:c-format */
14519 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14520 input_bfd, (int) r_type, sym_name);
14522 bfd_set_error (bfd_error_bad_value);
14528 case R_PPC64_TLSGD:
14529 case R_PPC64_TLSLD:
14530 case R_PPC64_TOCSAVE:
14531 case R_PPC64_GNU_VTINHERIT:
14532 case R_PPC64_GNU_VTENTRY:
14533 case R_PPC64_ENTRY:
14536 /* GOT16 relocations. Like an ADDR16 using the symbol's
14537 address in the GOT as relocation value instead of the
14538 symbol's value itself. Also, create a GOT entry for the
14539 symbol and put the symbol value there. */
14540 case R_PPC64_GOT_TLSGD16:
14541 case R_PPC64_GOT_TLSGD16_LO:
14542 case R_PPC64_GOT_TLSGD16_HI:
14543 case R_PPC64_GOT_TLSGD16_HA:
14544 tls_type = TLS_TLS | TLS_GD;
14547 case R_PPC64_GOT_TLSLD16:
14548 case R_PPC64_GOT_TLSLD16_LO:
14549 case R_PPC64_GOT_TLSLD16_HI:
14550 case R_PPC64_GOT_TLSLD16_HA:
14551 tls_type = TLS_TLS | TLS_LD;
14554 case R_PPC64_GOT_TPREL16_DS:
14555 case R_PPC64_GOT_TPREL16_LO_DS:
14556 case R_PPC64_GOT_TPREL16_HI:
14557 case R_PPC64_GOT_TPREL16_HA:
14558 tls_type = TLS_TLS | TLS_TPREL;
14561 case R_PPC64_GOT_DTPREL16_DS:
14562 case R_PPC64_GOT_DTPREL16_LO_DS:
14563 case R_PPC64_GOT_DTPREL16_HI:
14564 case R_PPC64_GOT_DTPREL16_HA:
14565 tls_type = TLS_TLS | TLS_DTPREL;
14568 case R_PPC64_GOT16:
14569 case R_PPC64_GOT16_LO:
14570 case R_PPC64_GOT16_HI:
14571 case R_PPC64_GOT16_HA:
14572 case R_PPC64_GOT16_DS:
14573 case R_PPC64_GOT16_LO_DS:
14576 /* Relocation is to the entry for this symbol in the global
14581 unsigned long indx = 0;
14582 struct got_entry *ent;
14584 if (tls_type == (TLS_TLS | TLS_LD)
14586 || !h->elf.def_dynamic))
14587 ent = ppc64_tlsld_got (input_bfd);
14592 if (!htab->elf.dynamic_sections_created
14593 || h->elf.dynindx == -1
14594 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14595 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf))
14596 /* This is actually a static link, or it is a
14597 -Bsymbolic link and the symbol is defined
14598 locally, or the symbol was forced to be local
14599 because of a version file. */
14603 indx = h->elf.dynindx;
14604 unresolved_reloc = FALSE;
14606 ent = h->elf.got.glist;
14610 if (local_got_ents == NULL)
14612 ent = local_got_ents[r_symndx];
14615 for (; ent != NULL; ent = ent->next)
14616 if (ent->addend == orig_rel.r_addend
14617 && ent->owner == input_bfd
14618 && ent->tls_type == tls_type)
14624 if (ent->is_indirect)
14625 ent = ent->got.ent;
14626 offp = &ent->got.offset;
14627 got = ppc64_elf_tdata (ent->owner)->got;
14631 /* The offset must always be a multiple of 8. We use the
14632 least significant bit to record whether we have already
14633 processed this entry. */
14635 if ((off & 1) != 0)
14639 /* Generate relocs for the dynamic linker, except in
14640 the case of TLSLD where we'll use one entry per
14648 ? h->elf.type == STT_GNU_IFUNC
14649 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14652 relgot = htab->elf.irelplt;
14654 htab->local_ifunc_resolver = 1;
14655 else if (is_static_defined (&h->elf))
14656 htab->maybe_local_ifunc_resolver = 1;
14659 || (bfd_link_pic (info)
14661 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)
14662 || (tls_type == (TLS_TLS | TLS_LD)
14663 && !h->elf.def_dynamic))))
14664 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14665 if (relgot != NULL)
14667 outrel.r_offset = (got->output_section->vma
14668 + got->output_offset
14670 outrel.r_addend = addend;
14671 if (tls_type & (TLS_LD | TLS_GD))
14673 outrel.r_addend = 0;
14674 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14675 if (tls_type == (TLS_TLS | TLS_GD))
14677 loc = relgot->contents;
14678 loc += (relgot->reloc_count++
14679 * sizeof (Elf64_External_Rela));
14680 bfd_elf64_swap_reloca_out (output_bfd,
14682 outrel.r_offset += 8;
14683 outrel.r_addend = addend;
14685 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14688 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14689 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14690 else if (tls_type == (TLS_TLS | TLS_TPREL))
14691 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14692 else if (indx != 0)
14693 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14697 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14699 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14701 /* Write the .got section contents for the sake
14703 loc = got->contents + off;
14704 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14708 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14710 outrel.r_addend += relocation;
14711 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14713 if (htab->elf.tls_sec == NULL)
14714 outrel.r_addend = 0;
14716 outrel.r_addend -= htab->elf.tls_sec->vma;
14719 loc = relgot->contents;
14720 loc += (relgot->reloc_count++
14721 * sizeof (Elf64_External_Rela));
14722 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14725 /* Init the .got section contents here if we're not
14726 emitting a reloc. */
14729 relocation += addend;
14732 if (htab->elf.tls_sec == NULL)
14736 if (tls_type & TLS_LD)
14739 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14740 if (tls_type & TLS_TPREL)
14741 relocation += DTP_OFFSET - TP_OFFSET;
14744 if (tls_type & (TLS_GD | TLS_LD))
14746 bfd_put_64 (output_bfd, relocation,
14747 got->contents + off + 8);
14751 bfd_put_64 (output_bfd, relocation,
14752 got->contents + off);
14756 if (off >= (bfd_vma) -2)
14759 relocation = got->output_section->vma + got->output_offset + off;
14760 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14764 case R_PPC64_PLT16_HA:
14765 case R_PPC64_PLT16_HI:
14766 case R_PPC64_PLT16_LO:
14767 case R_PPC64_PLT32:
14768 case R_PPC64_PLT64:
14769 /* Relocation is to the entry for this symbol in the
14770 procedure linkage table. */
14772 struct plt_entry **plt_list = NULL;
14774 plt_list = &h->elf.plt.plist;
14775 else if (local_got_ents != NULL)
14777 struct plt_entry **local_plt = (struct plt_entry **)
14778 (local_got_ents + symtab_hdr->sh_info);
14779 unsigned char *local_got_tls_masks = (unsigned char *)
14780 (local_plt + symtab_hdr->sh_info);
14781 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14782 plt_list = local_plt + r_symndx;
14786 struct plt_entry *ent;
14788 for (ent = *plt_list; ent != NULL; ent = ent->next)
14789 if (ent->plt.offset != (bfd_vma) -1
14790 && ent->addend == orig_rel.r_addend)
14794 plt = htab->elf.splt;
14795 if (!htab->elf.dynamic_sections_created
14797 || h->elf.dynindx == -1)
14798 plt = htab->elf.iplt;
14799 relocation = (plt->output_section->vma
14800 + plt->output_offset
14801 + ent->plt.offset);
14803 unresolved_reloc = FALSE;
14811 /* Relocation value is TOC base. */
14812 relocation = TOCstart;
14813 if (r_symndx == STN_UNDEF)
14814 relocation += htab->sec_info[input_section->id].toc_off;
14815 else if (unresolved_reloc)
14817 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14818 relocation += htab->sec_info[sec->id].toc_off;
14820 unresolved_reloc = TRUE;
14823 /* TOC16 relocs. We want the offset relative to the TOC base,
14824 which is the address of the start of the TOC plus 0x8000.
14825 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14827 case R_PPC64_TOC16:
14828 case R_PPC64_TOC16_LO:
14829 case R_PPC64_TOC16_HI:
14830 case R_PPC64_TOC16_DS:
14831 case R_PPC64_TOC16_LO_DS:
14832 case R_PPC64_TOC16_HA:
14833 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14836 /* Relocate against the beginning of the section. */
14837 case R_PPC64_SECTOFF:
14838 case R_PPC64_SECTOFF_LO:
14839 case R_PPC64_SECTOFF_HI:
14840 case R_PPC64_SECTOFF_DS:
14841 case R_PPC64_SECTOFF_LO_DS:
14842 case R_PPC64_SECTOFF_HA:
14844 addend -= sec->output_section->vma;
14847 case R_PPC64_REL16:
14848 case R_PPC64_REL16_LO:
14849 case R_PPC64_REL16_HI:
14850 case R_PPC64_REL16_HA:
14851 case R_PPC64_REL16DX_HA:
14854 case R_PPC64_REL14:
14855 case R_PPC64_REL14_BRNTAKEN:
14856 case R_PPC64_REL14_BRTAKEN:
14857 case R_PPC64_REL24:
14860 case R_PPC64_TPREL16:
14861 case R_PPC64_TPREL16_LO:
14862 case R_PPC64_TPREL16_HI:
14863 case R_PPC64_TPREL16_HA:
14864 case R_PPC64_TPREL16_DS:
14865 case R_PPC64_TPREL16_LO_DS:
14866 case R_PPC64_TPREL16_HIGH:
14867 case R_PPC64_TPREL16_HIGHA:
14868 case R_PPC64_TPREL16_HIGHER:
14869 case R_PPC64_TPREL16_HIGHERA:
14870 case R_PPC64_TPREL16_HIGHEST:
14871 case R_PPC64_TPREL16_HIGHESTA:
14873 && h->elf.root.type == bfd_link_hash_undefweak
14874 && h->elf.dynindx == -1)
14876 /* Make this relocation against an undefined weak symbol
14877 resolve to zero. This is really just a tweak, since
14878 code using weak externs ought to check that they are
14879 defined before using them. */
14880 bfd_byte *p = contents + rel->r_offset - d_offset;
14882 insn = bfd_get_32 (input_bfd, p);
14883 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14885 bfd_put_32 (input_bfd, insn, p);
14888 if (htab->elf.tls_sec != NULL)
14889 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14890 /* The TPREL16 relocs shouldn't really be used in shared
14891 libs or with non-local symbols as that will result in
14892 DT_TEXTREL being set, but support them anyway. */
14895 case R_PPC64_DTPREL16:
14896 case R_PPC64_DTPREL16_LO:
14897 case R_PPC64_DTPREL16_HI:
14898 case R_PPC64_DTPREL16_HA:
14899 case R_PPC64_DTPREL16_DS:
14900 case R_PPC64_DTPREL16_LO_DS:
14901 case R_PPC64_DTPREL16_HIGH:
14902 case R_PPC64_DTPREL16_HIGHA:
14903 case R_PPC64_DTPREL16_HIGHER:
14904 case R_PPC64_DTPREL16_HIGHERA:
14905 case R_PPC64_DTPREL16_HIGHEST:
14906 case R_PPC64_DTPREL16_HIGHESTA:
14907 if (htab->elf.tls_sec != NULL)
14908 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14911 case R_PPC64_ADDR64_LOCAL:
14912 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14917 case R_PPC64_DTPMOD64:
14922 case R_PPC64_TPREL64:
14923 if (htab->elf.tls_sec != NULL)
14924 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14927 case R_PPC64_DTPREL64:
14928 if (htab->elf.tls_sec != NULL)
14929 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14930 /* Fall through. */
14932 /* Relocations that may need to be propagated if this is a
14934 case R_PPC64_REL30:
14935 case R_PPC64_REL32:
14936 case R_PPC64_REL64:
14937 case R_PPC64_ADDR14:
14938 case R_PPC64_ADDR14_BRNTAKEN:
14939 case R_PPC64_ADDR14_BRTAKEN:
14940 case R_PPC64_ADDR16:
14941 case R_PPC64_ADDR16_DS:
14942 case R_PPC64_ADDR16_HA:
14943 case R_PPC64_ADDR16_HI:
14944 case R_PPC64_ADDR16_HIGH:
14945 case R_PPC64_ADDR16_HIGHA:
14946 case R_PPC64_ADDR16_HIGHER:
14947 case R_PPC64_ADDR16_HIGHERA:
14948 case R_PPC64_ADDR16_HIGHEST:
14949 case R_PPC64_ADDR16_HIGHESTA:
14950 case R_PPC64_ADDR16_LO:
14951 case R_PPC64_ADDR16_LO_DS:
14952 case R_PPC64_ADDR24:
14953 case R_PPC64_ADDR32:
14954 case R_PPC64_ADDR64:
14955 case R_PPC64_UADDR16:
14956 case R_PPC64_UADDR32:
14957 case R_PPC64_UADDR64:
14959 if ((input_section->flags & SEC_ALLOC) == 0)
14962 if (NO_OPD_RELOCS && is_opd)
14965 if (bfd_link_pic (info)
14967 || h->dyn_relocs != NULL)
14968 && ((h != NULL && pc_dynrelocs (h))
14969 || must_be_dyn_reloc (info, r_type)))
14971 ? h->dyn_relocs != NULL
14972 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14974 bfd_boolean skip, relocate;
14979 /* When generating a dynamic object, these relocations
14980 are copied into the output file to be resolved at run
14986 out_off = _bfd_elf_section_offset (output_bfd, info,
14987 input_section, rel->r_offset);
14988 if (out_off == (bfd_vma) -1)
14990 else if (out_off == (bfd_vma) -2)
14991 skip = TRUE, relocate = TRUE;
14992 out_off += (input_section->output_section->vma
14993 + input_section->output_offset);
14994 outrel.r_offset = out_off;
14995 outrel.r_addend = rel->r_addend;
14997 /* Optimize unaligned reloc use. */
14998 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14999 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
15000 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
15001 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
15002 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
15003 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
15004 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
15005 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
15006 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
15009 memset (&outrel, 0, sizeof outrel);
15010 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
15012 && r_type != R_PPC64_TOC)
15014 indx = h->elf.dynindx;
15015 BFD_ASSERT (indx != -1);
15016 outrel.r_info = ELF64_R_INFO (indx, r_type);
15020 /* This symbol is local, or marked to become local,
15021 or this is an opd section reloc which must point
15022 at a local function. */
15023 outrel.r_addend += relocation;
15024 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
15026 if (is_opd && h != NULL)
15028 /* Lie about opd entries. This case occurs
15029 when building shared libraries and we
15030 reference a function in another shared
15031 lib. The same thing happens for a weak
15032 definition in an application that's
15033 overridden by a strong definition in a
15034 shared lib. (I believe this is a generic
15035 bug in binutils handling of weak syms.)
15036 In these cases we won't use the opd
15037 entry in this lib. */
15038 unresolved_reloc = FALSE;
15041 && r_type == R_PPC64_ADDR64
15043 ? h->elf.type == STT_GNU_IFUNC
15044 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
15045 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15048 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
15050 /* We need to relocate .opd contents for ld.so.
15051 Prelink also wants simple and consistent rules
15052 for relocs. This make all RELATIVE relocs have
15053 *r_offset equal to r_addend. */
15060 ? h->elf.type == STT_GNU_IFUNC
15061 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15063 info->callbacks->einfo
15064 /* xgettext:c-format */
15065 (_("%H: %s for indirect "
15066 "function `%T' unsupported\n"),
15067 input_bfd, input_section, rel->r_offset,
15068 ppc64_elf_howto_table[r_type]->name,
15072 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
15074 else if (sec == NULL || sec->owner == NULL)
15076 bfd_set_error (bfd_error_bad_value);
15083 osec = sec->output_section;
15084 indx = elf_section_data (osec)->dynindx;
15088 if ((osec->flags & SEC_READONLY) == 0
15089 && htab->elf.data_index_section != NULL)
15090 osec = htab->elf.data_index_section;
15092 osec = htab->elf.text_index_section;
15093 indx = elf_section_data (osec)->dynindx;
15095 BFD_ASSERT (indx != 0);
15097 /* We are turning this relocation into one
15098 against a section symbol, so subtract out
15099 the output section's address but not the
15100 offset of the input section in the output
15102 outrel.r_addend -= osec->vma;
15105 outrel.r_info = ELF64_R_INFO (indx, r_type);
15109 sreloc = elf_section_data (input_section)->sreloc;
15111 ? h->elf.type == STT_GNU_IFUNC
15112 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
15114 sreloc = htab->elf.irelplt;
15116 htab->local_ifunc_resolver = 1;
15117 else if (is_static_defined (&h->elf))
15118 htab->maybe_local_ifunc_resolver = 1;
15120 if (sreloc == NULL)
15123 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
15126 loc = sreloc->contents;
15127 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
15128 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
15130 /* If this reloc is against an external symbol, it will
15131 be computed at runtime, so there's no need to do
15132 anything now. However, for the sake of prelink ensure
15133 that the section contents are a known value. */
15136 unresolved_reloc = FALSE;
15137 /* The value chosen here is quite arbitrary as ld.so
15138 ignores section contents except for the special
15139 case of .opd where the contents might be accessed
15140 before relocation. Choose zero, as that won't
15141 cause reloc overflow. */
15144 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
15145 to improve backward compatibility with older
15147 if (r_type == R_PPC64_ADDR64)
15148 addend = outrel.r_addend;
15149 /* Adjust pc_relative relocs to have zero in *r_offset. */
15150 else if (ppc64_elf_howto_table[r_type]->pc_relative)
15151 addend = outrel.r_offset;
15157 case R_PPC64_GLOB_DAT:
15158 case R_PPC64_JMP_SLOT:
15159 case R_PPC64_JMP_IREL:
15160 case R_PPC64_RELATIVE:
15161 /* We shouldn't ever see these dynamic relocs in relocatable
15163 /* Fall through. */
15165 case R_PPC64_PLTGOT16:
15166 case R_PPC64_PLTGOT16_DS:
15167 case R_PPC64_PLTGOT16_HA:
15168 case R_PPC64_PLTGOT16_HI:
15169 case R_PPC64_PLTGOT16_LO:
15170 case R_PPC64_PLTGOT16_LO_DS:
15171 case R_PPC64_PLTREL32:
15172 case R_PPC64_PLTREL64:
15173 /* These ones haven't been implemented yet. */
15175 info->callbacks->einfo
15176 /* xgettext:c-format */
15177 (_("%P: %B: %s is not supported for `%T'\n"),
15179 ppc64_elf_howto_table[r_type]->name, sym_name);
15181 bfd_set_error (bfd_error_invalid_operation);
15186 /* Multi-instruction sequences that access the TOC can be
15187 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15188 to nop; addi rb,r2,x; */
15189 howto = ppc64_elf_howto_table[(int) r_type];
15195 case R_PPC64_GOT_TLSLD16_HI:
15196 case R_PPC64_GOT_TLSGD16_HI:
15197 case R_PPC64_GOT_TPREL16_HI:
15198 case R_PPC64_GOT_DTPREL16_HI:
15199 case R_PPC64_GOT16_HI:
15200 case R_PPC64_TOC16_HI:
15201 /* These relocs would only be useful if building up an
15202 offset to later add to r2, perhaps in an indexed
15203 addressing mode instruction. Don't try to optimize.
15204 Unfortunately, the possibility of someone building up an
15205 offset like this or even with the HA relocs, means that
15206 we need to check the high insn when optimizing the low
15210 case R_PPC64_GOT_TLSLD16_HA:
15211 case R_PPC64_GOT_TLSGD16_HA:
15212 case R_PPC64_GOT_TPREL16_HA:
15213 case R_PPC64_GOT_DTPREL16_HA:
15214 case R_PPC64_GOT16_HA:
15215 case R_PPC64_TOC16_HA:
15216 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15217 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15219 bfd_byte *p = contents + (rel->r_offset & ~3);
15220 bfd_put_32 (input_bfd, NOP, p);
15224 case R_PPC64_GOT_TLSLD16_LO:
15225 case R_PPC64_GOT_TLSGD16_LO:
15226 case R_PPC64_GOT_TPREL16_LO_DS:
15227 case R_PPC64_GOT_DTPREL16_LO_DS:
15228 case R_PPC64_GOT16_LO:
15229 case R_PPC64_GOT16_LO_DS:
15230 case R_PPC64_TOC16_LO:
15231 case R_PPC64_TOC16_LO_DS:
15232 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15233 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15235 bfd_byte *p = contents + (rel->r_offset & ~3);
15236 insn = bfd_get_32 (input_bfd, p);
15237 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15239 /* Transform addic to addi when we change reg. */
15240 insn &= ~((0x3f << 26) | (0x1f << 16));
15241 insn |= (14u << 26) | (2 << 16);
15245 insn &= ~(0x1f << 16);
15248 bfd_put_32 (input_bfd, insn, p);
15252 case R_PPC64_TPREL16_HA:
15253 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15255 bfd_byte *p = contents + (rel->r_offset & ~3);
15256 insn = bfd_get_32 (input_bfd, p);
15257 if ((insn & ((0x3f << 26) | 0x1f << 16))
15258 != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */)
15259 /* xgettext:c-format */
15260 info->callbacks->minfo
15261 (_("%H: warning: %s unexpected insn %#x.\n"),
15262 input_bfd, input_section, rel->r_offset, howto->name, insn);
15264 bfd_put_32 (input_bfd, NOP, p);
15268 case R_PPC64_TPREL16_LO:
15269 case R_PPC64_TPREL16_LO_DS:
15270 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
15272 bfd_byte *p = contents + (rel->r_offset & ~3);
15273 insn = bfd_get_32 (input_bfd, p);
15274 insn &= ~(0x1f << 16);
15276 bfd_put_32 (input_bfd, insn, p);
15281 /* Do any further special processing. */
15287 case R_PPC64_REL16_HA:
15288 case R_PPC64_REL16DX_HA:
15289 case R_PPC64_ADDR16_HA:
15290 case R_PPC64_ADDR16_HIGHA:
15291 case R_PPC64_ADDR16_HIGHERA:
15292 case R_PPC64_ADDR16_HIGHESTA:
15293 case R_PPC64_TOC16_HA:
15294 case R_PPC64_SECTOFF_HA:
15295 case R_PPC64_TPREL16_HA:
15296 case R_PPC64_TPREL16_HIGHA:
15297 case R_PPC64_TPREL16_HIGHERA:
15298 case R_PPC64_TPREL16_HIGHESTA:
15299 case R_PPC64_DTPREL16_HA:
15300 case R_PPC64_DTPREL16_HIGHA:
15301 case R_PPC64_DTPREL16_HIGHERA:
15302 case R_PPC64_DTPREL16_HIGHESTA:
15303 /* It's just possible that this symbol is a weak symbol
15304 that's not actually defined anywhere. In that case,
15305 'sec' would be NULL, and we should leave the symbol
15306 alone (it will be set to zero elsewhere in the link). */
15309 /* Fall through. */
15311 case R_PPC64_GOT16_HA:
15312 case R_PPC64_PLTGOT16_HA:
15313 case R_PPC64_PLT16_HA:
15314 case R_PPC64_GOT_TLSGD16_HA:
15315 case R_PPC64_GOT_TLSLD16_HA:
15316 case R_PPC64_GOT_TPREL16_HA:
15317 case R_PPC64_GOT_DTPREL16_HA:
15318 /* Add 0x10000 if sign bit in 0:15 is set.
15319 Bits 0:15 are not used. */
15323 case R_PPC64_ADDR16_DS:
15324 case R_PPC64_ADDR16_LO_DS:
15325 case R_PPC64_GOT16_DS:
15326 case R_PPC64_GOT16_LO_DS:
15327 case R_PPC64_PLT16_LO_DS:
15328 case R_PPC64_SECTOFF_DS:
15329 case R_PPC64_SECTOFF_LO_DS:
15330 case R_PPC64_TOC16_DS:
15331 case R_PPC64_TOC16_LO_DS:
15332 case R_PPC64_PLTGOT16_DS:
15333 case R_PPC64_PLTGOT16_LO_DS:
15334 case R_PPC64_GOT_TPREL16_DS:
15335 case R_PPC64_GOT_TPREL16_LO_DS:
15336 case R_PPC64_GOT_DTPREL16_DS:
15337 case R_PPC64_GOT_DTPREL16_LO_DS:
15338 case R_PPC64_TPREL16_DS:
15339 case R_PPC64_TPREL16_LO_DS:
15340 case R_PPC64_DTPREL16_DS:
15341 case R_PPC64_DTPREL16_LO_DS:
15342 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15344 /* If this reloc is against an lq, lxv, or stxv insn, then
15345 the value must be a multiple of 16. This is somewhat of
15346 a hack, but the "correct" way to do this by defining _DQ
15347 forms of all the _DS relocs bloats all reloc switches in
15348 this file. It doesn't make much sense to use these
15349 relocs in data, so testing the insn should be safe. */
15350 if ((insn & (0x3f << 26)) == (56u << 26)
15351 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15353 relocation += addend;
15354 addend = insn & (mask ^ 3);
15355 if ((relocation & mask) != 0)
15357 relocation ^= relocation & mask;
15358 info->callbacks->einfo
15359 /* xgettext:c-format */
15360 (_("%H: error: %s not a multiple of %u\n"),
15361 input_bfd, input_section, rel->r_offset,
15364 bfd_set_error (bfd_error_bad_value);
15371 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15372 because such sections are not SEC_ALLOC and thus ld.so will
15373 not process them. */
15374 if (unresolved_reloc
15375 && !((input_section->flags & SEC_DEBUGGING) != 0
15376 && h->elf.def_dynamic)
15377 && _bfd_elf_section_offset (output_bfd, info, input_section,
15378 rel->r_offset) != (bfd_vma) -1)
15380 info->callbacks->einfo
15381 /* xgettext:c-format */
15382 (_("%H: unresolvable %s against `%T'\n"),
15383 input_bfd, input_section, rel->r_offset,
15385 h->elf.root.root.string);
15389 /* 16-bit fields in insns mostly have signed values, but a
15390 few insns have 16-bit unsigned values. Really, we should
15391 have different reloc types. */
15392 if (howto->complain_on_overflow != complain_overflow_dont
15393 && howto->dst_mask == 0xffff
15394 && (input_section->flags & SEC_CODE) != 0)
15396 enum complain_overflow complain = complain_overflow_signed;
15398 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15399 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15400 complain = complain_overflow_bitfield;
15401 else if (howto->rightshift == 0
15402 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15403 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15404 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15405 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15406 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15407 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15408 complain = complain_overflow_unsigned;
15409 if (howto->complain_on_overflow != complain)
15411 alt_howto = *howto;
15412 alt_howto.complain_on_overflow = complain;
15413 howto = &alt_howto;
15417 if (r_type == R_PPC64_REL16DX_HA)
15419 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15420 if (rel->r_offset + 4 > input_section->size)
15421 r = bfd_reloc_outofrange;
15424 relocation += addend;
15425 relocation -= (rel->r_offset
15426 + input_section->output_offset
15427 + input_section->output_section->vma);
15428 relocation = (bfd_signed_vma) relocation >> 16;
15429 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15431 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15432 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15434 if (relocation + 0x8000 > 0xffff)
15435 r = bfd_reloc_overflow;
15439 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15440 rel->r_offset, relocation, addend);
15442 if (r != bfd_reloc_ok)
15444 char *more_info = NULL;
15445 const char *reloc_name = howto->name;
15447 if (reloc_dest != DEST_NORMAL)
15449 more_info = bfd_malloc (strlen (reloc_name) + 8);
15450 if (more_info != NULL)
15452 strcpy (more_info, reloc_name);
15453 strcat (more_info, (reloc_dest == DEST_OPD
15454 ? " (OPD)" : " (stub)"));
15455 reloc_name = more_info;
15459 if (r == bfd_reloc_overflow)
15461 /* On code like "if (foo) foo();" don't report overflow
15462 on a branch to zero when foo is undefined. */
15464 && (reloc_dest == DEST_STUB
15466 && (h->elf.root.type == bfd_link_hash_undefweak
15467 || h->elf.root.type == bfd_link_hash_undefined)
15468 && is_branch_reloc (r_type))))
15469 info->callbacks->reloc_overflow (info, &h->elf.root,
15470 sym_name, reloc_name,
15472 input_bfd, input_section,
15477 info->callbacks->einfo
15478 /* xgettext:c-format */
15479 (_("%H: %s against `%T': error %d\n"),
15480 input_bfd, input_section, rel->r_offset,
15481 reloc_name, sym_name, (int) r);
15484 if (more_info != NULL)
15494 Elf_Internal_Shdr *rel_hdr;
15495 size_t deleted = rel - wrel;
15497 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15498 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15499 if (rel_hdr->sh_size == 0)
15501 /* It is too late to remove an empty reloc section. Leave
15503 ??? What is wrong with an empty section??? */
15504 rel_hdr->sh_size = rel_hdr->sh_entsize;
15507 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15508 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15509 input_section->reloc_count -= deleted;
15512 /* If we're emitting relocations, then shortly after this function
15513 returns, reloc offsets and addends for this section will be
15514 adjusted. Worse, reloc symbol indices will be for the output
15515 file rather than the input. Save a copy of the relocs for
15516 opd_entry_value. */
15517 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15520 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15521 rel = bfd_alloc (input_bfd, amt);
15522 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15523 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15526 memcpy (rel, relocs, amt);
15531 /* Adjust the value of any local symbols in opd sections. */
15534 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15535 const char *name ATTRIBUTE_UNUSED,
15536 Elf_Internal_Sym *elfsym,
15537 asection *input_sec,
15538 struct elf_link_hash_entry *h)
15540 struct _opd_sec_data *opd;
15547 opd = get_opd_info (input_sec);
15548 if (opd == NULL || opd->adjust == NULL)
15551 value = elfsym->st_value - input_sec->output_offset;
15552 if (!bfd_link_relocatable (info))
15553 value -= input_sec->output_section->vma;
15555 adjust = opd->adjust[OPD_NDX (value)];
15559 elfsym->st_value += adjust;
15563 /* Finish up dynamic symbol handling. We set the contents of various
15564 dynamic sections here. */
15567 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15568 struct bfd_link_info *info,
15569 struct elf_link_hash_entry *h,
15570 Elf_Internal_Sym *sym)
15572 struct ppc_link_hash_table *htab;
15573 struct plt_entry *ent;
15574 Elf_Internal_Rela rela;
15577 htab = ppc_hash_table (info);
15581 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15582 if (ent->plt.offset != (bfd_vma) -1)
15584 /* This symbol has an entry in the procedure linkage
15585 table. Set it up. */
15586 if (!htab->elf.dynamic_sections_created
15587 || h->dynindx == -1)
15589 BFD_ASSERT (h->type == STT_GNU_IFUNC
15591 && (h->root.type == bfd_link_hash_defined
15592 || h->root.type == bfd_link_hash_defweak));
15593 rela.r_offset = (htab->elf.iplt->output_section->vma
15594 + htab->elf.iplt->output_offset
15595 + ent->plt.offset);
15597 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15599 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15600 rela.r_addend = (h->root.u.def.value
15601 + h->root.u.def.section->output_offset
15602 + h->root.u.def.section->output_section->vma
15604 loc = (htab->elf.irelplt->contents
15605 + (htab->elf.irelplt->reloc_count++
15606 * sizeof (Elf64_External_Rela)));
15607 htab->local_ifunc_resolver = 1;
15611 rela.r_offset = (htab->elf.splt->output_section->vma
15612 + htab->elf.splt->output_offset
15613 + ent->plt.offset);
15614 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15615 rela.r_addend = ent->addend;
15616 loc = (htab->elf.srelplt->contents
15617 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15618 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15619 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
15620 htab->maybe_local_ifunc_resolver = 1;
15622 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15624 if (!htab->opd_abi)
15626 if (!h->def_regular)
15628 /* Mark the symbol as undefined, rather than as
15629 defined in glink. Leave the value if there were
15630 any relocations where pointer equality matters
15631 (this is a clue for the dynamic linker, to make
15632 function pointer comparisons work between an
15633 application and shared library), otherwise set it
15635 sym->st_shndx = SHN_UNDEF;
15636 if (!h->pointer_equality_needed)
15638 else if (!h->ref_regular_nonweak)
15640 /* This breaks function pointer comparisons, but
15641 that is better than breaking tests for a NULL
15642 function pointer. */
15651 /* This symbol needs a copy reloc. Set it up. */
15654 if (h->dynindx == -1
15655 || (h->root.type != bfd_link_hash_defined
15656 && h->root.type != bfd_link_hash_defweak)
15657 || htab->elf.srelbss == NULL
15658 || htab->elf.sreldynrelro == NULL)
15661 rela.r_offset = (h->root.u.def.value
15662 + h->root.u.def.section->output_section->vma
15663 + h->root.u.def.section->output_offset);
15664 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15666 if (h->root.u.def.section == htab->elf.sdynrelro)
15667 srel = htab->elf.sreldynrelro;
15669 srel = htab->elf.srelbss;
15670 loc = srel->contents;
15671 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15672 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15678 /* Used to decide how to sort relocs in an optimal manner for the
15679 dynamic linker, before writing them out. */
15681 static enum elf_reloc_type_class
15682 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15683 const asection *rel_sec,
15684 const Elf_Internal_Rela *rela)
15686 enum elf_ppc64_reloc_type r_type;
15687 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15689 if (rel_sec == htab->elf.irelplt)
15690 return reloc_class_ifunc;
15692 r_type = ELF64_R_TYPE (rela->r_info);
15695 case R_PPC64_RELATIVE:
15696 return reloc_class_relative;
15697 case R_PPC64_JMP_SLOT:
15698 return reloc_class_plt;
15700 return reloc_class_copy;
15702 return reloc_class_normal;
15706 /* Finish up the dynamic sections. */
15709 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15710 struct bfd_link_info *info)
15712 struct ppc_link_hash_table *htab;
15716 htab = ppc_hash_table (info);
15720 dynobj = htab->elf.dynobj;
15721 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15723 if (htab->elf.dynamic_sections_created)
15725 Elf64_External_Dyn *dyncon, *dynconend;
15727 if (sdyn == NULL || htab->elf.sgot == NULL)
15730 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15731 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15732 for (; dyncon < dynconend; dyncon++)
15734 Elf_Internal_Dyn dyn;
15737 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15744 case DT_PPC64_GLINK:
15746 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15747 /* We stupidly defined DT_PPC64_GLINK to be the start
15748 of glink rather than the first entry point, which is
15749 what ld.so needs, and now have a bigger stub to
15750 support automatic multiple TOCs. */
15751 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15755 s = bfd_get_section_by_name (output_bfd, ".opd");
15758 dyn.d_un.d_ptr = s->vma;
15762 if (htab->do_multi_toc && htab->multi_toc_needed)
15763 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15764 if (htab->has_plt_localentry0)
15765 dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY;
15768 case DT_PPC64_OPDSZ:
15769 s = bfd_get_section_by_name (output_bfd, ".opd");
15772 dyn.d_un.d_val = s->size;
15776 s = htab->elf.splt;
15777 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15781 s = htab->elf.srelplt;
15782 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15786 dyn.d_un.d_val = htab->elf.srelplt->size;
15790 if (htab->local_ifunc_resolver)
15791 info->callbacks->einfo
15792 (_("%X%P: text relocations and GNU indirect "
15793 "functions will result in a segfault at runtime\n"));
15794 else if (htab->maybe_local_ifunc_resolver)
15795 info->callbacks->einfo
15796 (_("%P: warning: text relocations and GNU indirect "
15797 "functions may result in a segfault at runtime\n"));
15801 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15805 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0
15806 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
15808 /* Fill in the first entry in the global offset table.
15809 We use it to hold the link-time TOCbase. */
15810 bfd_put_64 (output_bfd,
15811 elf_gp (output_bfd) + TOC_BASE_OFF,
15812 htab->elf.sgot->contents);
15814 /* Set .got entry size. */
15815 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15818 if (htab->elf.splt != NULL && htab->elf.splt->size != 0
15819 && htab->elf.splt->output_section != bfd_abs_section_ptr)
15821 /* Set .plt entry size. */
15822 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15823 = PLT_ENTRY_SIZE (htab);
15826 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15827 brlt ourselves if emitrelocations. */
15828 if (htab->brlt != NULL
15829 && htab->brlt->reloc_count != 0
15830 && !_bfd_elf_link_output_relocs (output_bfd,
15832 elf_section_data (htab->brlt)->rela.hdr,
15833 elf_section_data (htab->brlt)->relocs,
15837 if (htab->glink != NULL
15838 && htab->glink->reloc_count != 0
15839 && !_bfd_elf_link_output_relocs (output_bfd,
15841 elf_section_data (htab->glink)->rela.hdr,
15842 elf_section_data (htab->glink)->relocs,
15846 if (htab->glink_eh_frame != NULL
15847 && htab->glink_eh_frame->size != 0)
15851 struct map_stub *group;
15854 p = htab->glink_eh_frame->contents;
15855 p += (sizeof (glink_eh_frame_cie) + align - 1) & -align;
15857 for (group = htab->group; group != NULL; group = group->next)
15858 if (group->stub_sec != NULL)
15860 /* Offset to stub section. */
15861 val = (group->stub_sec->output_section->vma
15862 + group->stub_sec->output_offset);
15863 val -= (htab->glink_eh_frame->output_section->vma
15864 + htab->glink_eh_frame->output_offset
15865 + (p + 8 - htab->glink_eh_frame->contents));
15866 if (val + 0x80000000 > 0xffffffff)
15868 info->callbacks->einfo
15869 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15870 group->stub_sec->name);
15873 bfd_put_32 (dynobj, val, p + 8);
15874 p += stub_eh_frame_size (group, align);
15876 if (htab->glink != NULL && htab->glink->size != 0)
15878 /* Offset to .glink. */
15879 val = (htab->glink->output_section->vma
15880 + htab->glink->output_offset
15882 val -= (htab->glink_eh_frame->output_section->vma
15883 + htab->glink_eh_frame->output_offset
15884 + (p + 8 - htab->glink_eh_frame->contents));
15885 if (val + 0x80000000 > 0xffffffff)
15887 info->callbacks->einfo
15888 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15889 htab->glink->name);
15892 bfd_put_32 (dynobj, val, p + 8);
15893 p += (24 + align - 1) & -align;
15896 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15897 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15898 htab->glink_eh_frame,
15899 htab->glink_eh_frame->contents))
15903 /* We need to handle writing out multiple GOT sections ourselves,
15904 since we didn't add them to DYNOBJ. We know dynobj is the first
15906 while ((dynobj = dynobj->link.next) != NULL)
15910 if (!is_ppc64_elf (dynobj))
15913 s = ppc64_elf_tdata (dynobj)->got;
15916 && s->output_section != bfd_abs_section_ptr
15917 && !bfd_set_section_contents (output_bfd, s->output_section,
15918 s->contents, s->output_offset,
15921 s = ppc64_elf_tdata (dynobj)->relgot;
15924 && s->output_section != bfd_abs_section_ptr
15925 && !bfd_set_section_contents (output_bfd, s->output_section,
15926 s->contents, s->output_offset,
15934 #include "elf64-target.h"
15936 /* FreeBSD support */
15938 #undef TARGET_LITTLE_SYM
15939 #undef TARGET_LITTLE_NAME
15941 #undef TARGET_BIG_SYM
15942 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15943 #undef TARGET_BIG_NAME
15944 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15947 #define ELF_OSABI ELFOSABI_FREEBSD
15950 #define elf64_bed elf64_powerpc_fbsd_bed
15952 #include "elf64-target.h"