1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2014 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 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
142 /* Offset of tp and dtp pointers from start of TLS block. */
143 #define TP_OFFSET 0x7000
144 #define DTP_OFFSET 0x8000
146 /* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
148 insert an addi to adjust r11. */
149 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
150 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
155 #define BCTR 0x4e800420 /* bctr */
157 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
158 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
161 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
164 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166 #define BNECTR 0x4ca20420 /* bnectr+ */
167 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
169 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
170 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
173 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
175 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
240 abiversion (bfd *abfd)
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
246 set_abiversion (bfd *abfd, int ver)
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
252 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
254 /* Relocation HOWTO's. */
255 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
257 static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
261 2, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE, /* pc_relative */
265 complain_overflow_dont, /* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
268 FALSE, /* partial_inplace */
271 FALSE), /* pcrel_offset */
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
283 FALSE, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 FALSE), /* pcrel_offset */
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE, /* pc_relative */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
299 FALSE, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 FALSE), /* pcrel_offset */
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
314 FALSE, /* partial_inplace */
316 0xffff, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 ppc64_elf_ha_reloc, /* special_function */
359 "R_PPC64_ADDR16_HA", /* name */
360 FALSE, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_signed, /* complain_on_overflow */
374 ppc64_elf_branch_reloc, /* special_function */
375 "R_PPC64_ADDR14", /* name */
376 FALSE, /* partial_inplace */
378 0x0000fffc, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE, /* pc_relative */
390 complain_overflow_signed, /* complain_on_overflow */
391 ppc64_elf_brtaken_reloc, /* special_function */
392 "R_PPC64_ADDR14_BRTAKEN",/* name */
393 FALSE, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc, /* special_function */
409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
410 FALSE, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 TRUE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_branch_reloc, /* special_function */
424 "R_PPC64_REL24", /* name */
425 FALSE, /* partial_inplace */
427 0x03fffffc, /* dst_mask */
428 TRUE), /* pcrel_offset */
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL14", /* name */
440 FALSE, /* partial_inplace */
442 0x0000fffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE, /* pc_relative */
454 complain_overflow_signed, /* complain_on_overflow */
455 ppc64_elf_brtaken_reloc, /* special_function */
456 "R_PPC64_REL14_BRTAKEN", /* name */
457 FALSE, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc, /* special_function */
473 "R_PPC64_REL14_BRNTAKEN",/* name */
474 FALSE, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
481 HOWTO (R_PPC64_GOT16, /* type */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE, /* pc_relative */
487 complain_overflow_signed, /* complain_on_overflow */
488 ppc64_elf_unhandled_reloc, /* special_function */
489 "R_PPC64_GOT16", /* name */
490 FALSE, /* partial_inplace */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
497 HOWTO (R_PPC64_GOT16_LO, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE, /* pc_relative */
503 complain_overflow_dont, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc, /* special_function */
505 "R_PPC64_GOT16_LO", /* name */
506 FALSE, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_HI, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE, /* pc_relative */
519 complain_overflow_signed,/* complain_on_overflow */
520 ppc64_elf_unhandled_reloc, /* special_function */
521 "R_PPC64_GOT16_HI", /* name */
522 FALSE, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HA, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE, /* pc_relative */
535 complain_overflow_signed,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc, /* special_function */
537 "R_PPC64_GOT16_HA", /* name */
538 FALSE, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE), /* pcrel_offset */
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
550 0, /* this one is variable size */
552 FALSE, /* pc_relative */
554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
556 "R_PPC64_COPY", /* name */
557 FALSE, /* partial_inplace */
560 FALSE), /* pcrel_offset */
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
568 FALSE, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc, /* special_function */
572 "R_PPC64_GLOB_DAT", /* name */
573 FALSE, /* partial_inplace */
575 ONES (64), /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE, /* pc_relative */
586 complain_overflow_dont, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc, /* special_function */
588 "R_PPC64_JMP_SLOT", /* name */
589 FALSE, /* partial_inplace */
592 FALSE), /* pcrel_offset */
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
597 HOWTO (R_PPC64_RELATIVE, /* type */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
601 FALSE, /* pc_relative */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
606 FALSE, /* partial_inplace */
608 ONES (64), /* dst_mask */
609 FALSE), /* pcrel_offset */
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE, /* pc_relative */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
621 FALSE, /* partial_inplace */
623 0xffffffff, /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
636 FALSE, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE, /* pc_relative */
648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
651 FALSE, /* partial_inplace */
653 0xffffffff, /* dst_mask */
654 TRUE), /* pcrel_offset */
656 /* 32-bit relocation to the symbol's procedure linkage table. */
657 HOWTO (R_PPC64_PLT32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE, /* pc_relative */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 ppc64_elf_unhandled_reloc, /* special_function */
665 "R_PPC64_PLT32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 FALSE), /* pcrel_offset */
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 TRUE, /* pc_relative */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
682 FALSE, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 TRUE), /* pcrel_offset */
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
689 HOWTO (R_PPC64_PLT16_LO, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_dont, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc, /* special_function */
697 "R_PPC64_PLT16_LO", /* name */
698 FALSE, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_HI, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_signed, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc, /* special_function */
713 "R_PPC64_PLT16_HI", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HA, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE, /* pc_relative */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc, /* special_function */
729 "R_PPC64_PLT16_HA", /* name */
730 FALSE, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
735 /* 16-bit section relative relocation. */
736 HOWTO (R_PPC64_SECTOFF, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_sectoff_reloc, /* special_function */
744 "R_PPC64_SECTOFF", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF_LO", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_signed, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_HI", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_ha_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HA", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 "R_PPC64_REL30", /* name */
805 FALSE, /* partial_inplace */
807 0xfffffffc, /* dst_mask */
808 TRUE), /* pcrel_offset */
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 FALSE, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
822 FALSE, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 FALSE), /* pcrel_offset */
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
837 FALSE, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE, /* pc_relative */
850 complain_overflow_dont, /* complain_on_overflow */
851 ppc64_elf_ha_reloc, /* special_function */
852 "R_PPC64_ADDR16_HIGHERA", /* name */
853 FALSE, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE, /* pc_relative */
881 complain_overflow_dont, /* complain_on_overflow */
882 ppc64_elf_ha_reloc, /* special_function */
883 "R_PPC64_ADDR16_HIGHESTA", /* name */
884 FALSE, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
899 FALSE, /* partial_inplace */
901 ONES (64), /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 TRUE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 TRUE), /* pcrel_offset */
919 /* 64-bit relocation to the symbol's procedure linkage table. */
920 HOWTO (R_PPC64_PLT64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 FALSE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc64_elf_unhandled_reloc, /* special_function */
928 "R_PPC64_PLT64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 FALSE), /* pcrel_offset */
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 TRUE, /* pc_relative */
943 complain_overflow_dont, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc, /* special_function */
945 "R_PPC64_PLTREL64", /* name */
946 FALSE, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 TRUE), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation. */
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_signed, /* complain_on_overflow */
961 ppc64_elf_toc_reloc, /* special_function */
962 "R_PPC64_TOC16", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation without overflow. */
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc64_elf_toc_reloc, /* special_function */
979 "R_PPC64_TOC16_LO", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation, high 16 bits. */
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc64_elf_toc_reloc, /* special_function */
996 "R_PPC64_TOC16_HI", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE, /* pc_relative */
1013 complain_overflow_signed, /* complain_on_overflow */
1014 ppc64_elf_toc_ha_reloc, /* special_function */
1015 "R_PPC64_TOC16_HA", /* name */
1016 FALSE, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE), /* pcrel_offset */
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_toc64_reloc, /* special_function */
1032 "R_PPC64_TOC", /* name */
1033 FALSE, /* partial_inplace */
1035 ONES (64), /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_signed, /* complain_on_overflow */
1054 ppc64_elf_unhandled_reloc, /* special_function */
1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE, /* pc_relative */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE, /* pc_relative */
1085 complain_overflow_signed, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE, /* pc_relative */
1103 complain_overflow_signed, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_signed, /* complain_on_overflow */
1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE, /* pc_relative */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE, /* pc_relative */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1278 /* Marker relocs for TLS. */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TLSGD,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSLD,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1319 FALSE), /* pcrel_offset */
1321 HOWTO (R_PPC64_TOCSAVE,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE, /* pc_relative */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1333 FALSE), /* pcrel_offset */
1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE, /* pc_relative */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE, /* pc_relative */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_signed, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE, /* pc_relative */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_signed, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE, /* pc_relative */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
1696 FALSE, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE), /* pcrel_offset */
1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_dont, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_signed, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE, /* pc_relative */
1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
1758 FALSE, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE, /* pc_relative */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc, /* special_function */
1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
1819 FALSE, /* partial_inplace */
1821 0xfffc, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_signed, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
1849 FALSE, /* partial_inplace */
1851 0xffff, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE, /* pc_relative */
1877 complain_overflow_signed, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
1880 FALSE, /* partial_inplace */
1882 0xfffc, /* dst_mask */
1883 FALSE), /* pcrel_offset */
1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_dont, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_signed, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_HI", /* name */
1910 FALSE, /* partial_inplace */
1912 0xffff, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HA", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1934 FALSE, /* pc_relative */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1942 FALSE), /* pcrel_offset */
1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE, /* pc_relative */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1963 TRUE, /* pc_relative */
1965 complain_overflow_signed, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_signed, /* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE, /* pc_relative */
2011 complain_overflow_signed, /* complain_on_overflow */
2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE, /* pc_relative */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2039 FALSE, /* pc_relative */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
2134 FALSE, /* partial_inplace */
2137 FALSE), /* pcrel_offset */
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
2149 FALSE, /* partial_inplace */
2152 FALSE), /* pcrel_offset */
2156 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2160 ppc_howto_init (void)
2162 unsigned int i, type;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2175 static reloc_howto_type *
2176 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2420 return ppc64_elf_howto_table[r];
2423 static reloc_howto_type *
2424 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2439 /* Set the howto pointer for a PowerPC ELF reloc. */
2442 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
2447 /* Initialize howto table if needed. */
2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2451 type = ELF64_R_TYPE (dst->r_info);
2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2457 type = R_PPC64_NONE;
2459 cache_ptr->howto = ppc64_elf_howto_table[type];
2462 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2464 static bfd_reloc_status_type
2465 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2472 if (output_bfd != NULL)
2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2474 input_section, output_bfd, error_message);
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2483 static bfd_reloc_status_type
2484 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2516 if (strcmp (symdef->name, symbol->name) == 0)
2518 elfsym = (elf_symbol_type *) symdef;
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2526 return bfd_reloc_continue;
2529 static bfd_reloc_status_type
2530 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
2535 enum elf_ppc64_reloc_type r_type;
2536 bfd_size_type octets;
2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2543 if (output_bfd != NULL)
2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2545 input_section, output_bfd, error_message);
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
2550 r_type = reloc_entry->howto->type;
2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
2592 static bfd_reloc_status_type
2593 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2600 if (output_bfd != NULL)
2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2602 input_section, output_bfd, error_message);
2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
2606 return bfd_reloc_continue;
2609 static bfd_reloc_status_type
2610 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2617 if (output_bfd != NULL)
2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2619 input_section, output_bfd, error_message);
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2629 static bfd_reloc_status_type
2630 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd != NULL)
2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2641 input_section, output_bfd, error_message);
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2652 static bfd_reloc_status_type
2653 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2662 if (output_bfd != NULL)
2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2664 input_section, output_bfd, error_message);
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2678 static bfd_reloc_status_type
2679 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
2684 bfd_size_type octets;
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2702 static bfd_reloc_status_type
2703 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd != NULL)
2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2712 input_section, output_bfd, error_message);
2714 if (error_message != NULL)
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2721 return bfd_reloc_dangerous;
2724 /* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2728 struct got_entry *next;
2730 /* The symbol addend that we'll be placing in the GOT. */
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2739 Point to the BFD owning this GOT entry. */
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
2744 unsigned char tls_type;
2746 /* Non-zero if got.ent points to real entry. */
2747 unsigned char is_indirect;
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 bfd_signed_vma refcount;
2754 struct got_entry *ent;
2758 /* The same for PLT. */
2761 struct plt_entry *next;
2767 bfd_signed_vma refcount;
2772 struct ppc64_elf_obj_tdata
2774 struct elf_obj_tdata elf;
2776 /* Shortcuts to dynamic linker sections. */
2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
2784 /* TLS local dynamic got entry handling. Support for multiple GOT
2785 sections means we potentially need one of these for each input bfd. */
2786 struct got_entry tlsld_got;
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2792 /* Section contents. */
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
2798 unsigned int has_small_toc_reloc : 1;
2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
2805 #define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2808 #define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2811 #define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
2815 /* Override the generic function because we store some extras. */
2818 ppc64_elf_mkobject (bfd *abfd)
2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2824 /* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2828 ppc64_elf_object_p (bfd *abfd)
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2844 /* Support for core dump NOTE sections. */
2847 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2849 size_t offset, size;
2851 if (note->descsz != 504)
2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2866 size, note->descpos + offset);
2870 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2872 if (note->descsz != 136)
2875 elf_tdata (abfd)->core->pid
2876 = bfd_get_32 (abfd, note->descdata + 24);
2877 elf_tdata (abfd)->core->program
2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2879 elf_tdata (abfd)->core->command
2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2886 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2899 va_start (ap, note_type);
2900 memset (data, 0, sizeof (data));
2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2932 /* Add extra PPC sections. */
2934 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
2945 enum _ppc64_sec_type {
2951 struct _ppc64_elf_section_data
2953 struct bfd_elf_section_data elf;
2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2960 /* Points to the function code section for local opd entries. */
2961 asection **func_sec;
2963 /* After editing .opd, adjust references to opd local syms. */
2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2973 /* And the relocation addend. */
2978 enum _ppc64_sec_type sec_type:2;
2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch:1;
2985 #define ppc64_elf_section_data(sec) \
2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2989 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2991 if (!sec->used_by_bfd)
2993 struct _ppc64_elf_section_data *sdata;
2994 bfd_size_type amt = sizeof (*sdata);
2996 sdata = bfd_zalloc (abfd, amt);
2999 sec->used_by_bfd = sdata;
3002 return _bfd_elf_new_section_hook (abfd, sec);
3005 static struct _opd_sec_data *
3006 get_opd_info (asection * sec)
3009 && ppc64_elf_section_data (sec) != NULL
3010 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3011 return &ppc64_elf_section_data (sec)->u.opd;
3015 /* Parameters for the qsort hook. */
3016 static bfd_boolean synthetic_relocatable;
3018 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3021 compare_symbols (const void *ap, const void *bp)
3023 const asymbol *a = * (const asymbol **) ap;
3024 const asymbol *b = * (const asymbol **) bp;
3026 /* Section symbols first. */
3027 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3029 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3032 /* then .opd symbols. */
3033 if (strcmp (a->section->name, ".opd") == 0
3034 && strcmp (b->section->name, ".opd") != 0)
3036 if (strcmp (a->section->name, ".opd") != 0
3037 && strcmp (b->section->name, ".opd") == 0)
3040 /* then other code symbols. */
3041 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3042 == (SEC_CODE | SEC_ALLOC)
3043 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 != (SEC_CODE | SEC_ALLOC))
3047 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC)
3049 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 == (SEC_CODE | SEC_ALLOC))
3053 if (synthetic_relocatable)
3055 if (a->section->id < b->section->id)
3058 if (a->section->id > b->section->id)
3062 if (a->value + a->section->vma < b->value + b->section->vma)
3065 if (a->value + a->section->vma > b->value + b->section->vma)
3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3073 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3076 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3079 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3082 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3085 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3088 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3091 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3097 /* Search SYMS for a symbol of the given VALUE. */
3100 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3108 mid = (lo + hi) >> 1;
3109 if (syms[mid]->value + syms[mid]->section->vma < value)
3111 else if (syms[mid]->value + syms[mid]->section->vma > value)
3121 mid = (lo + hi) >> 1;
3122 if (syms[mid]->section->id < id)
3124 else if (syms[mid]->section->id > id)
3126 else if (syms[mid]->value < value)
3128 else if (syms[mid]->value > value)
3138 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3140 bfd_vma vma = *(bfd_vma *) ptr;
3141 return ((section->flags & SEC_ALLOC) != 0
3142 && section->vma <= vma
3143 && vma < section->vma + section->size);
3146 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3147 entry syms. Also generate @plt symbols for the glink branch table. */
3150 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3151 long static_count, asymbol **static_syms,
3152 long dyn_count, asymbol **dyn_syms,
3159 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3160 asection *opd = NULL;
3161 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3163 int abi = abiversion (abfd);
3169 opd = bfd_get_section_by_name (abfd, ".opd");
3170 if (opd == NULL && abi == 1)
3174 symcount = static_count;
3176 symcount += dyn_count;
3180 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3184 if (!relocatable && static_count != 0 && dyn_count != 0)
3186 /* Use both symbol tables. */
3187 memcpy (syms, static_syms, static_count * sizeof (*syms));
3188 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3190 else if (!relocatable && static_count == 0)
3191 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3193 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3195 synthetic_relocatable = relocatable;
3196 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3198 if (!relocatable && symcount > 1)
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3203 different values, so trim any with the same value. */
3204 for (i = 1, j = 1; i < symcount; ++i)
3205 if (syms[i - 1]->value + syms[i - 1]->section->vma
3206 != syms[i]->value + syms[i]->section->vma)
3207 syms[j++] = syms[i];
3212 if (strcmp (syms[i]->section->name, ".opd") == 0)
3216 for (; i < symcount; ++i)
3217 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3218 != (SEC_CODE | SEC_ALLOC))
3219 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3223 for (; i < symcount; ++i)
3224 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3228 for (; i < symcount; ++i)
3229 if (strcmp (syms[i]->section->name, ".opd") != 0)
3233 for (; i < symcount; ++i)
3234 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3235 != (SEC_CODE | SEC_ALLOC))
3243 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3248 if (opdsymend == secsymend)
3251 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3252 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3256 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3263 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3267 while (r < opd->relocation + relcount
3268 && r->address < syms[i]->value + opd->vma)
3271 if (r == opd->relocation + relcount)
3274 if (r->address != syms[i]->value + opd->vma)
3277 if (r->howto->type != R_PPC64_ADDR64)
3280 sym = *r->sym_ptr_ptr;
3281 if (!sym_exists_at (syms, opdsymend, symcount,
3282 sym->section->id, sym->value + r->addend))
3285 size += sizeof (asymbol);
3286 size += strlen (syms[i]->name) + 2;
3290 s = *ret = bfd_malloc (size);
3297 names = (char *) (s + count);
3299 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3303 while (r < opd->relocation + relcount
3304 && r->address < syms[i]->value + opd->vma)
3307 if (r == opd->relocation + relcount)
3310 if (r->address != syms[i]->value + opd->vma)
3313 if (r->howto->type != R_PPC64_ADDR64)
3316 sym = *r->sym_ptr_ptr;
3317 if (!sym_exists_at (syms, opdsymend, symcount,
3318 sym->section->id, sym->value + r->addend))
3323 s->flags |= BSF_SYNTHETIC;
3324 s->section = sym->section;
3325 s->value = sym->value + r->addend;
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
3340 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3341 bfd_byte *contents = NULL;
3344 bfd_vma glink_vma = 0, resolv_vma = 0;
3345 asection *dynamic, *glink = NULL, *relplt = NULL;
3348 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3350 free_contents_and_exit:
3358 for (i = secsymend; i < opdsymend; ++i)
3362 /* Ignore bogus symbols. */
3363 if (syms[i]->value > opd->size - 8)
3366 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3367 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3370 size += sizeof (asymbol);
3371 size += strlen (syms[i]->name) + 2;
3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3377 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3379 bfd_byte *dynbuf, *extdyn, *extdynend;
3381 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3383 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3384 goto free_contents_and_exit;
3386 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3387 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3390 extdynend = extdyn + dynamic->size;
3391 for (; extdyn < extdynend; extdyn += extdynsize)
3393 Elf_Internal_Dyn dyn;
3394 (*swap_dyn_in) (abfd, extdyn, &dyn);
3396 if (dyn.d_tag == DT_NULL)
3399 if (dyn.d_tag == DT_PPC64_GLINK)
3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink = bfd_sections_find_if (abfd, section_covers_vma,
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3421 unsigned int off = 0;
3423 while (bfd_get_section_contents (abfd, glink, buf,
3424 glink_vma + off - glink->vma, 4))
3426 unsigned int insn = bfd_get_32 (abfd, buf);
3428 if ((insn & ~0x3fffffc) == 0)
3430 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3439 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3441 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3444 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3445 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3446 goto free_contents_and_exit;
3448 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3449 size += plt_count * sizeof (asymbol);
3451 p = relplt->relocation;
3452 for (i = 0; i < plt_count; i++, p++)
3454 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3456 size += sizeof ("+0x") - 1 + 16;
3461 s = *ret = bfd_malloc (size);
3463 goto free_contents_and_exit;
3465 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3467 for (i = secsymend; i < opdsymend; ++i)
3471 if (syms[i]->value > opd->size - 8)
3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3479 asection *sec = abfd->sections;
3486 long mid = (lo + hi) >> 1;
3487 if (syms[mid]->section->vma < ent)
3489 else if (syms[mid]->section->vma > ent)
3493 sec = syms[mid]->section;
3498 if (lo >= hi && lo > codesecsym)
3499 sec = syms[lo - 1]->section;
3501 for (; sec != NULL; sec = sec->next)
3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3507 if ((sec->flags & SEC_ALLOC) == 0)
3509 if ((sec->flags & SEC_CODE) != 0)
3512 s->flags |= BSF_SYNTHETIC;
3513 s->value = ent - s->section->vma;
3516 len = strlen (syms[i]->name);
3517 memcpy (names, syms[i]->name, len + 1);
3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s->udata.p = syms[i];
3527 if (glink != NULL && relplt != NULL)
3531 /* Add a symbol for the main glink trampoline. */
3532 memset (s, 0, sizeof *s);
3534 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3536 s->value = resolv_vma - glink->vma;
3538 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names += sizeof ("__glink_PLTresolve");
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p = relplt->relocation;
3561 for (i = 0; i < plt_count; i++, p++)
3565 *s = **p->sym_ptr_ptr;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s->flags & BSF_LOCAL) == 0)
3569 s->flags |= BSF_GLOBAL;
3570 s->flags |= BSF_SYNTHETIC;
3572 s->value = glink_vma - glink->vma;
3575 len = strlen ((*p->sym_ptr_ptr)->name);
3576 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3580 memcpy (names, "+0x", sizeof ("+0x") - 1);
3581 names += sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd, names, p->addend);
3583 names += strlen (names);
3585 memcpy (names, "@plt", sizeof ("@plt"));
3586 names += sizeof ("@plt");
3606 /* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3623 The function definition in another object file might be:
3627 . .quad .TOC.@tocbase
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
3672 definition from some other object, eg. a static library.
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
3678 /* Of those relocs that might be copied as dynamic relocs, this function
3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
3683 must_be_dyn_reloc (struct bfd_link_info *info,
3684 enum elf_ppc64_reloc_type r_type)
3696 case R_PPC64_TPREL16:
3697 case R_PPC64_TPREL16_LO:
3698 case R_PPC64_TPREL16_HI:
3699 case R_PPC64_TPREL16_HA:
3700 case R_PPC64_TPREL16_DS:
3701 case R_PPC64_TPREL16_LO_DS:
3702 case R_PPC64_TPREL16_HIGH:
3703 case R_PPC64_TPREL16_HIGHA:
3704 case R_PPC64_TPREL16_HIGHER:
3705 case R_PPC64_TPREL16_HIGHERA:
3706 case R_PPC64_TPREL16_HIGHEST:
3707 case R_PPC64_TPREL16_HIGHESTA:
3708 case R_PPC64_TPREL64:
3709 return !info->executable;
3713 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3724 redefines the function descriptor symbol to point to the copy. This
3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
3728 #define ELIMINATE_COPY_RELOCS 1
3730 /* Section name for stubs is the associated section name plus this
3732 #define STUB_SUFFIX ".stub"
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
3781 enum ppc_stub_type {
3783 ppc_stub_long_branch,
3784 ppc_stub_long_branch_r2off,
3785 ppc_stub_plt_branch,
3786 ppc_stub_plt_branch_r2off,
3788 ppc_stub_plt_call_r2save,
3789 ppc_stub_global_entry
3792 struct ppc_stub_hash_entry {
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root;
3797 enum ppc_stub_type stub_type;
3799 /* The stub section. */
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset;
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value;
3808 asection *target_section;
3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry *h;
3812 struct plt_entry *plt_ent;
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3818 /* Symbol st_other. */
3819 unsigned char other;
3822 struct ppc_branch_hash_entry {
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root;
3827 /* Offset within branch lookup table. */
3828 unsigned int offset;
3830 /* Generation marker. */
3834 /* Used to track dynamic relocations for local symbols. */
3835 struct ppc_dyn_relocs
3837 struct ppc_dyn_relocs *next;
3839 /* The input section of the reloc. */
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count : 31;
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc : 1;
3849 struct ppc_link_hash_entry
3851 struct elf_link_hash_entry elf;
3854 /* A pointer to the most recently used stub hash entry against this
3856 struct ppc_stub_hash_entry *stub_cache;
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry *next_dot_sym;
3862 /* Track dynamic relocs copied for this symbol. */
3863 struct elf_dyn_relocs *dyn_relocs;
3865 /* Link between function code and descriptor symbols. */
3866 struct ppc_link_hash_entry *oh;
3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func:1;
3870 unsigned int is_func_descriptor:1;
3871 unsigned int fake:1;
3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
3876 unsigned int adjust_done:1;
3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined:1;
3881 /* Contexts in which symbol is used in the GOT (or TOC).
3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889 #define TLS_GD 1 /* GD reloc. */
3890 #define TLS_LD 2 /* LD reloc. */
3891 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893 #define TLS_TLS 16 /* Any TLS reloc. */
3894 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3896 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3897 unsigned char tls_mask;
3900 /* ppc64 ELF linker hash table. */
3902 struct ppc_link_hash_table
3904 struct elf_link_hash_table elf;
3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table;
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table;
3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab;
3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params *params;
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3921 /* This is the section to which stubs in the group will be attached. */
3923 /* The stub section. */
3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3929 /* Temp used when calculating TOC pointers. */
3932 asection *toc_first_sec;
3934 /* Highest input section id. */
3937 /* Highest output section index. */
3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry *dot_syms;
3943 /* List of input sections for each output section. */
3944 asection **input_list;
3946 /* Shortcuts to get to dynamic linker sections. */
3953 asection *glink_eh_frame;
3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry *tls_get_addr;
3957 struct ppc_link_hash_entry *tls_get_addr_fd;
3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size;
3963 unsigned long stub_count[ppc_stub_global_entry];
3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals;
3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi:1;
3971 /* Support for multiple toc sections. */
3972 unsigned int do_multi_toc:1;
3973 unsigned int multi_toc_needed:1;
3974 unsigned int second_toc_pass:1;
3975 unsigned int do_toc_opt:1;
3978 unsigned int stub_error:1;
3980 /* Temp used by ppc64_elf_before_check_relocs. */
3981 unsigned int twiddled_syms:1;
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration;
3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache;
3990 /* Rename some of the generic section flags to better document how they
3993 /* Nonzero if this section has TLS related relocations. */
3994 #define has_tls_reloc sec_flg0
3996 /* Nonzero if this section has a call to __tls_get_addr. */
3997 #define has_tls_get_addr_call sec_flg1
3999 /* Nonzero if this section has any toc or got relocs. */
4000 #define has_toc_reloc sec_flg2
4002 /* Nonzero if this section has a call to another section that uses
4004 #define makes_toc_func_call sec_flg3
4006 /* Recursion protection when determining above flag. */
4007 #define call_check_in_progress sec_flg4
4008 #define call_check_done sec_flg5
4010 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4012 #define ppc_hash_table(p) \
4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4016 #define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4020 #define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4024 /* Create an entry in the stub hash table. */
4026 static struct bfd_hash_entry *
4027 stub_hash_newfunc (struct bfd_hash_entry *entry,
4028 struct bfd_hash_table *table,
4031 /* Allocate the structure if it has not already been allocated by a
4035 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4040 /* Call the allocation method of the superclass. */
4041 entry = bfd_hash_newfunc (entry, table, string);
4044 struct ppc_stub_hash_entry *eh;
4046 /* Initialize the local fields. */
4047 eh = (struct ppc_stub_hash_entry *) entry;
4048 eh->stub_type = ppc_stub_none;
4049 eh->stub_sec = NULL;
4050 eh->stub_offset = 0;
4051 eh->target_value = 0;
4052 eh->target_section = NULL;
4062 /* Create an entry in the branch hash table. */
4064 static struct bfd_hash_entry *
4065 branch_hash_newfunc (struct bfd_hash_entry *entry,
4066 struct bfd_hash_table *table,
4069 /* Allocate the structure if it has not already been allocated by a
4073 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4078 /* Call the allocation method of the superclass. */
4079 entry = bfd_hash_newfunc (entry, table, string);
4082 struct ppc_branch_hash_entry *eh;
4084 /* Initialize the local fields. */
4085 eh = (struct ppc_branch_hash_entry *) entry;
4093 /* Create an entry in a ppc64 ELF linker hash table. */
4095 static struct bfd_hash_entry *
4096 link_hash_newfunc (struct bfd_hash_entry *entry,
4097 struct bfd_hash_table *table,
4100 /* Allocate the structure if it has not already been allocated by a
4104 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4109 /* Call the allocation method of the superclass. */
4110 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4115 memset (&eh->u.stub_cache, 0,
4116 (sizeof (struct ppc_link_hash_entry)
4117 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4127 A new object defines "foo" and references "bar".
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4133 Keep a list of newly added dot-symbols. */
4135 if (string[0] == '.')
4137 struct ppc_link_hash_table *htab;
4139 htab = (struct ppc_link_hash_table *) table;
4140 eh->u.next_dot_sym = htab->dot_syms;
4141 htab->dot_syms = eh;
4148 struct tocsave_entry {
4154 tocsave_htab_hash (const void *p)
4156 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4157 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4161 tocsave_htab_eq (const void *p1, const void *p2)
4163 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4164 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4165 return e1->sec == e2->sec && e1->offset == e2->offset;
4168 /* Destroy a ppc64 ELF linker hash table. */
4171 ppc64_elf_link_hash_table_free (bfd *obfd)
4173 struct ppc_link_hash_table *htab;
4175 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4176 if (htab->tocsave_htab)
4177 htab_delete (htab->tocsave_htab);
4178 bfd_hash_table_free (&htab->branch_hash_table);
4179 bfd_hash_table_free (&htab->stub_hash_table);
4180 _bfd_elf_link_hash_table_free (obfd);
4183 /* Create a ppc64 ELF linker hash table. */
4185 static struct bfd_link_hash_table *
4186 ppc64_elf_link_hash_table_create (bfd *abfd)
4188 struct ppc_link_hash_table *htab;
4189 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4191 htab = bfd_zmalloc (amt);
4195 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4196 sizeof (struct ppc_link_hash_entry),
4203 /* Init the stub hash table too. */
4204 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4205 sizeof (struct ppc_stub_hash_entry)))
4207 _bfd_elf_link_hash_table_free (abfd);
4211 /* And the branch hash table. */
4212 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4213 sizeof (struct ppc_branch_hash_entry)))
4215 bfd_hash_table_free (&htab->stub_hash_table);
4216 _bfd_elf_link_hash_table_free (abfd);
4220 htab->tocsave_htab = htab_try_create (1024,
4224 if (htab->tocsave_htab == NULL)
4226 ppc64_elf_link_hash_table_free (abfd);
4229 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
4235 htab->elf.init_got_refcount.refcount = 0;
4236 htab->elf.init_got_refcount.glist = NULL;
4237 htab->elf.init_plt_refcount.refcount = 0;
4238 htab->elf.init_plt_refcount.glist = NULL;
4239 htab->elf.init_got_offset.offset = 0;
4240 htab->elf.init_got_offset.glist = NULL;
4241 htab->elf.init_plt_offset.offset = 0;
4242 htab->elf.init_plt_offset.glist = NULL;
4244 return &htab->elf.root;
4247 /* Create sections for linker generated code. */
4250 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4252 struct ppc_link_hash_table *htab;
4255 htab = ppc_hash_table (info);
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4262 if (htab->sfpr == NULL
4263 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4269 if (htab->glink == NULL
4270 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4273 if (!info->no_ld_generated_unwind_info)
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4280 if (htab->glink_eh_frame == NULL
4281 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4285 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4286 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4287 if (htab->elf.iplt == NULL
4288 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4291 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4292 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4294 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4295 if (htab->elf.irelplt == NULL
4296 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags = (SEC_ALLOC | SEC_LOAD
4301 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4304 if (htab->brlt == NULL
4305 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4312 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4313 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4316 if (htab->relbrlt == NULL
4317 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4323 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4326 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4327 struct ppc64_elf_params *params)
4329 struct ppc_link_hash_table *htab;
4331 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4333 /* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab = ppc_hash_table (info);
4339 htab->elf.dynobj = params->stub_bfd;
4340 htab->params = params;
4342 if (info->relocatable)
4345 return create_linkage_sections (htab->elf.dynobj, info);
4348 /* Build a name for an entry in the stub hash table. */
4351 ppc_stub_name (const asection *input_section,
4352 const asection *sym_sec,
4353 const struct ppc_link_hash_entry *h,
4354 const Elf_Internal_Rela *rel)
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4366 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4367 stub_name = bfd_malloc (len);
4368 if (stub_name == NULL)
4371 len = sprintf (stub_name, "%08x.%s+%x",
4372 input_section->id & 0xffffffff,
4373 h->elf.root.root.string,
4374 (int) rel->r_addend & 0xffffffff);
4378 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4379 stub_name = bfd_malloc (len);
4380 if (stub_name == NULL)
4383 len = sprintf (stub_name, "%08x.%x:%x+%x",
4384 input_section->id & 0xffffffff,
4385 sym_sec->id & 0xffffffff,
4386 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4387 (int) rel->r_addend & 0xffffffff);
4389 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4390 stub_name[len - 2] = 0;
4394 /* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4397 static struct ppc_stub_hash_entry *
4398 ppc_get_stub_entry (const asection *input_section,
4399 const asection *sym_sec,
4400 struct ppc_link_hash_entry *h,
4401 const Elf_Internal_Rela *rel,
4402 struct ppc_link_hash_table *htab)
4404 struct ppc_stub_hash_entry *stub_entry;
4405 const asection *id_sec;
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec = htab->stub_group[input_section->id].link_sec;
4414 if (h != NULL && h->u.stub_cache != NULL
4415 && h->u.stub_cache->h == h
4416 && h->u.stub_cache->id_sec == id_sec)
4418 stub_entry = h->u.stub_cache;
4424 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4425 if (stub_name == NULL)
4428 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4429 stub_name, FALSE, FALSE);
4431 h->u.stub_cache = stub_entry;
4439 /* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4442 static struct ppc_stub_hash_entry *
4443 ppc_add_stub (const char *stub_name,
4445 struct bfd_link_info *info)
4447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4450 struct ppc_stub_hash_entry *stub_entry;
4452 link_sec = htab->stub_group[section->id].link_sec;
4453 stub_sec = htab->stub_group[section->id].stub_sec;
4454 if (stub_sec == NULL)
4456 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4457 if (stub_sec == NULL)
4463 namelen = strlen (link_sec->name);
4464 len = namelen + sizeof (STUB_SUFFIX);
4465 s_name = bfd_alloc (htab->params->stub_bfd, len);
4469 memcpy (s_name, link_sec->name, namelen);
4470 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4471 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4472 if (stub_sec == NULL)
4474 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4476 htab->stub_group[section->id].stub_sec = stub_sec;
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4482 if (stub_entry == NULL)
4484 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4485 section->owner, stub_name);
4489 stub_entry->stub_sec = stub_sec;
4490 stub_entry->stub_offset = 0;
4491 stub_entry->id_sec = link_sec;
4495 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
4499 create_got_section (bfd *abfd, struct bfd_link_info *info)
4501 asection *got, *relgot;
4503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4505 if (!is_ppc64_elf (abfd))
4511 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4514 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED);
4517 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4519 || !bfd_set_section_alignment (abfd, got, 3))
4522 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4523 flags | SEC_READONLY);
4525 || ! bfd_set_section_alignment (abfd, relgot, 3))
4528 ppc64_elf_tdata (abfd)->got = got;
4529 ppc64_elf_tdata (abfd)->relgot = relgot;
4533 /* Create the dynamic sections, and set up shortcuts. */
4536 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4538 struct ppc_link_hash_table *htab;
4540 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4543 htab = ppc_hash_table (info);
4547 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4549 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4551 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4552 || (!info->shared && !htab->relbss))
4558 /* Follow indirect and warning symbol links. */
4560 static inline struct bfd_link_hash_entry *
4561 follow_link (struct bfd_link_hash_entry *h)
4563 while (h->type == bfd_link_hash_indirect
4564 || h->type == bfd_link_hash_warning)
4569 static inline struct elf_link_hash_entry *
4570 elf_follow_link (struct elf_link_hash_entry *h)
4572 return (struct elf_link_hash_entry *) follow_link (&h->root);
4575 static inline struct ppc_link_hash_entry *
4576 ppc_follow_link (struct ppc_link_hash_entry *h)
4578 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4581 /* Merge PLT info on FROM with that on TO. */
4584 move_plt_plist (struct ppc_link_hash_entry *from,
4585 struct ppc_link_hash_entry *to)
4587 if (from->elf.plt.plist != NULL)
4589 if (to->elf.plt.plist != NULL)
4591 struct plt_entry **entp;
4592 struct plt_entry *ent;
4594 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4596 struct plt_entry *dent;
4598 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4599 if (dent->addend == ent->addend)
4601 dent->plt.refcount += ent->plt.refcount;
4608 *entp = to->elf.plt.plist;
4611 to->elf.plt.plist = from->elf.plt.plist;
4612 from->elf.plt.plist = NULL;
4616 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4619 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4620 struct elf_link_hash_entry *dir,
4621 struct elf_link_hash_entry *ind)
4623 struct ppc_link_hash_entry *edir, *eind;
4625 edir = (struct ppc_link_hash_entry *) dir;
4626 eind = (struct ppc_link_hash_entry *) ind;
4628 edir->is_func |= eind->is_func;
4629 edir->is_func_descriptor |= eind->is_func_descriptor;
4630 edir->tls_mask |= eind->tls_mask;
4631 if (eind->oh != NULL)
4632 edir->oh = ppc_follow_link (eind->oh);
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind->elf.root.type != bfd_link_hash_indirect
4639 && edir->elf.dynamic_adjusted))
4640 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4642 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4643 edir->elf.ref_regular |= eind->elf.ref_regular;
4644 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4645 edir->elf.needs_plt |= eind->elf.needs_plt;
4646 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
4649 if (eind->dyn_relocs != NULL)
4651 if (edir->dyn_relocs != NULL)
4653 struct elf_dyn_relocs **pp;
4654 struct elf_dyn_relocs *p;
4656 /* Add reloc counts against the indirect sym to the direct sym
4657 list. Merge any entries against the same section. */
4658 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4660 struct elf_dyn_relocs *q;
4662 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4663 if (q->sec == p->sec)
4665 q->pc_count += p->pc_count;
4666 q->count += p->count;
4673 *pp = edir->dyn_relocs;
4676 edir->dyn_relocs = eind->dyn_relocs;
4677 eind->dyn_relocs = NULL;
4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4687 if (eind->elf.root.type != bfd_link_hash_indirect)
4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
4692 if (eind->elf.got.glist != NULL)
4694 if (edir->elf.got.glist != NULL)
4696 struct got_entry **entp;
4697 struct got_entry *ent;
4699 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4701 struct got_entry *dent;
4703 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4704 if (dent->addend == ent->addend
4705 && dent->owner == ent->owner
4706 && dent->tls_type == ent->tls_type)
4708 dent->got.refcount += ent->got.refcount;
4715 *entp = edir->elf.got.glist;
4718 edir->elf.got.glist = eind->elf.got.glist;
4719 eind->elf.got.glist = NULL;
4722 /* And plt entries. */
4723 move_plt_plist (eind, edir);
4725 if (eind->elf.dynindx != -1)
4727 if (edir->elf.dynindx != -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4729 edir->elf.dynstr_index);
4730 edir->elf.dynindx = eind->elf.dynindx;
4731 edir->elf.dynstr_index = eind->elf.dynstr_index;
4732 eind->elf.dynindx = -1;
4733 eind->elf.dynstr_index = 0;
4737 /* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4740 static struct ppc_link_hash_entry *
4741 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4743 struct ppc_link_hash_entry *fdh = fh->oh;
4747 const char *fd_name = fh->elf.root.root.string + 1;
4749 fdh = (struct ppc_link_hash_entry *)
4750 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4754 fdh->is_func_descriptor = 1;
4760 return ppc_follow_link (fdh);
4763 /* Make a fake function descriptor sym for the code sym FH. */
4765 static struct ppc_link_hash_entry *
4766 make_fdh (struct bfd_link_info *info,
4767 struct ppc_link_hash_entry *fh)
4771 struct bfd_link_hash_entry *bh;
4772 struct ppc_link_hash_entry *fdh;
4774 abfd = fh->elf.root.u.undef.abfd;
4775 newsym = bfd_make_empty_symbol (abfd);
4776 newsym->name = fh->elf.root.root.string + 1;
4777 newsym->section = bfd_und_section_ptr;
4779 newsym->flags = BSF_WEAK;
4782 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4783 newsym->flags, newsym->section,
4784 newsym->value, NULL, FALSE, FALSE,
4788 fdh = (struct ppc_link_hash_entry *) bh;
4789 fdh->elf.non_elf = 0;
4791 fdh->is_func_descriptor = 1;
4798 /* Fix function descriptor symbols defined in .opd sections to be
4802 ppc64_elf_add_symbol_hook (bfd *ibfd,
4803 struct bfd_link_info *info,
4804 Elf_Internal_Sym *isym,
4806 flagword *flags ATTRIBUTE_UNUSED,
4808 bfd_vma *value ATTRIBUTE_UNUSED)
4810 if ((ibfd->flags & DYNAMIC) == 0
4811 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4814 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4816 if ((ibfd->flags & DYNAMIC) == 0)
4817 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4819 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4821 else if (*sec != NULL
4822 && strcmp ((*sec)->name, ".opd") == 0)
4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4825 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4827 if (abiversion (ibfd) == 0)
4828 set_abiversion (ibfd, 2);
4829 else if (abiversion (ibfd) == 1)
4831 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name);
4833 bfd_set_error (bfd_error_bad_value);
4841 /* Merge non-visibility st_other attributes: local entry point. */
4844 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *isym,
4846 bfd_boolean definition,
4847 bfd_boolean dynamic)
4849 if (definition && !dynamic)
4850 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h->other));
4854 /* This function makes an old ABI object reference to ".bar" cause the
4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
4859 static struct elf_link_hash_entry *
4860 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4861 struct bfd_link_info *info,
4864 struct elf_link_hash_entry *h;
4868 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h->root.type == bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry *) h)->fake))
4879 len = strlen (name);
4880 dot_name = bfd_alloc (abfd, len + 2);
4881 if (dot_name == NULL)
4882 return (struct elf_link_hash_entry *) 0 - 1;
4884 memcpy (dot_name + 1, name, len + 1);
4885 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4886 bfd_release (abfd, dot_name);
4890 /* This function satisfies all old ABI object references to ".bar" if a
4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
4900 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4902 struct ppc_link_hash_table *htab;
4903 struct ppc_link_hash_entry *fdh;
4905 if (eh->elf.root.type == bfd_link_hash_indirect)
4908 if (eh->elf.root.type == bfd_link_hash_warning)
4909 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4911 if (eh->elf.root.root.string[0] != '.')
4914 htab = ppc_hash_table (info);
4918 fdh = lookup_fdh (eh, htab);
4921 if (!info->relocatable
4922 && (eh->elf.root.type == bfd_link_hash_undefined
4923 || eh->elf.root.type == bfd_link_hash_undefweak)
4924 && eh->elf.ref_regular)
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh = make_fdh (info, eh);
4932 fdh->elf.ref_regular = 1;
4937 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4938 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4939 if (entry_vis < descr_vis)
4940 fdh->elf.other += entry_vis - descr_vis;
4941 else if (entry_vis > descr_vis)
4942 eh->elf.other += descr_vis - entry_vis;
4944 if ((fdh->elf.root.type == bfd_link_hash_defined
4945 || fdh->elf.root.type == bfd_link_hash_defweak)
4946 && eh->elf.root.type == bfd_link_hash_undefined)
4948 eh->elf.root.type = bfd_link_hash_undefweak;
4949 eh->was_undefined = 1;
4950 htab->twiddled_syms = 1;
4957 /* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
4961 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4963 struct ppc_link_hash_table *htab;
4964 struct ppc_link_hash_entry **p, *eh;
4966 if (!is_ppc64_elf (info->output_bfd))
4968 htab = ppc_hash_table (info);
4972 if (is_ppc64_elf (ibfd))
4974 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4976 if (opd != NULL && opd->size != 0)
4978 if (abiversion (ibfd) == 0)
4979 set_abiversion (ibfd, 1);
4980 else if (abiversion (ibfd) == 2)
4982 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4984 ibfd, abiversion (ibfd));
4985 bfd_set_error (bfd_error_bad_value);
4989 if ((ibfd->flags & DYNAMIC) == 0
4990 && (opd->flags & SEC_RELOC) != 0
4991 && opd->reloc_count != 0
4992 && !bfd_is_abs_section (opd->output_section))
4994 /* Garbage collection needs some extra help with .opd sections.
4995 We don't want to necessarily keep everything referenced by
4996 relocs in .opd, as that would keep all functions. Instead,
4997 if we reference an .opd symbol (a function descriptor), we
4998 want to keep the function code symbol's section. This is
4999 easy for global symbols, but for local syms we need to keep
5000 information about the associated function section. */
5002 asection **opd_sym_map;
5004 amt = opd->size * sizeof (*opd_sym_map) / 8;
5005 opd_sym_map = bfd_zalloc (ibfd, amt);
5006 if (opd_sym_map == NULL)
5008 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5009 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5010 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5014 /* For input files without an explicit abiversion in e_flags
5015 we should have flagged any with symbol st_other bits set
5016 as ELFv1 and above flagged those with .opd as ELFv2.
5017 Set the output abiversion if not yet set, and for any input
5018 still ambiguous, take its abiversion from the output.
5019 Differences in ABI are reported later. */
5020 if (abiversion (info->output_bfd) == 0)
5021 set_abiversion (info->output_bfd, abiversion (ibfd));
5022 else if (abiversion (ibfd) == 0)
5023 set_abiversion (ibfd, abiversion (info->output_bfd));
5025 p = &htab->dot_syms;
5026 while ((eh = *p) != NULL)
5029 if (&eh->elf == htab->elf.hgot)
5031 else if (htab->elf.hgot == NULL
5032 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5033 htab->elf.hgot = &eh->elf;
5034 else if (!add_symbol_adjust (eh, info))
5036 p = &eh->u.next_dot_sym;
5040 /* Clear the list for non-ppc64 input files. */
5041 p = &htab->dot_syms;
5042 while ((eh = *p) != NULL)
5045 p = &eh->u.next_dot_sym;
5048 /* We need to fix the undefs list for any syms we have twiddled to
5050 if (htab->twiddled_syms)
5052 bfd_link_repair_undef_list (&htab->elf.root);
5053 htab->twiddled_syms = 0;
5058 /* Undo hash table changes when an --as-needed input file is determined
5059 not to be needed. */
5062 ppc64_elf_notice_as_needed (bfd *ibfd,
5063 struct bfd_link_info *info,
5064 enum notice_asneeded_action act)
5066 if (act == notice_not_needed)
5068 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5073 htab->dot_syms = NULL;
5075 return _bfd_elf_notice_as_needed (ibfd, info, act);
5078 /* If --just-symbols against a final linked binary, then assume we need
5079 toc adjusting stubs when calling functions defined there. */
5082 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5084 if ((sec->flags & SEC_CODE) != 0
5085 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5086 && is_ppc64_elf (sec->owner))
5088 if (abiversion (sec->owner) >= 2
5089 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5090 sec->has_toc_reloc = 1;
5092 _bfd_elf_link_just_syms (sec, info);
5095 static struct plt_entry **
5096 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5097 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5099 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5100 struct plt_entry **local_plt;
5101 unsigned char *local_got_tls_masks;
5103 if (local_got_ents == NULL)
5105 bfd_size_type size = symtab_hdr->sh_info;
5107 size *= (sizeof (*local_got_ents)
5108 + sizeof (*local_plt)
5109 + sizeof (*local_got_tls_masks));
5110 local_got_ents = bfd_zalloc (abfd, size);
5111 if (local_got_ents == NULL)
5113 elf_local_got_ents (abfd) = local_got_ents;
5116 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5118 struct got_entry *ent;
5120 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5121 if (ent->addend == r_addend
5122 && ent->owner == abfd
5123 && ent->tls_type == tls_type)
5127 bfd_size_type amt = sizeof (*ent);
5128 ent = bfd_alloc (abfd, amt);
5131 ent->next = local_got_ents[r_symndx];
5132 ent->addend = r_addend;
5134 ent->tls_type = tls_type;
5135 ent->is_indirect = FALSE;
5136 ent->got.refcount = 0;
5137 local_got_ents[r_symndx] = ent;
5139 ent->got.refcount += 1;
5142 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5143 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5144 local_got_tls_masks[r_symndx] |= tls_type;
5146 return local_plt + r_symndx;
5150 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5152 struct plt_entry *ent;
5154 for (ent = *plist; ent != NULL; ent = ent->next)
5155 if (ent->addend == addend)
5159 bfd_size_type amt = sizeof (*ent);
5160 ent = bfd_alloc (abfd, amt);
5164 ent->addend = addend;
5165 ent->plt.refcount = 0;
5168 ent->plt.refcount += 1;
5173 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5175 return (r_type == R_PPC64_REL24
5176 || r_type == R_PPC64_REL14
5177 || r_type == R_PPC64_REL14_BRTAKEN
5178 || r_type == R_PPC64_REL14_BRNTAKEN
5179 || r_type == R_PPC64_ADDR24
5180 || r_type == R_PPC64_ADDR14
5181 || r_type == R_PPC64_ADDR14_BRTAKEN
5182 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5185 /* Look through the relocs for a section during the first phase, and
5186 calculate needed space in the global offset table, procedure
5187 linkage table, and dynamic reloc sections. */
5190 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5191 asection *sec, const Elf_Internal_Rela *relocs)
5193 struct ppc_link_hash_table *htab;
5194 Elf_Internal_Shdr *symtab_hdr;
5195 struct elf_link_hash_entry **sym_hashes;
5196 const Elf_Internal_Rela *rel;
5197 const Elf_Internal_Rela *rel_end;
5199 asection **opd_sym_map;
5200 struct elf_link_hash_entry *tga, *dottga;
5202 if (info->relocatable)
5205 /* Don't do anything special with non-loaded, non-alloced sections.
5206 In particular, any relocs in such sections should not affect GOT
5207 and PLT reference counting (ie. we don't allow them to create GOT
5208 or PLT entries), there's no possibility or desire to optimize TLS
5209 relocs, and there's not much point in propagating relocs to shared
5210 libs that the dynamic linker won't relocate. */
5211 if ((sec->flags & SEC_ALLOC) == 0)
5214 BFD_ASSERT (is_ppc64_elf (abfd));
5216 htab = ppc_hash_table (info);
5220 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5221 FALSE, FALSE, TRUE);
5222 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5223 FALSE, FALSE, TRUE);
5224 symtab_hdr = &elf_symtab_hdr (abfd);
5225 sym_hashes = elf_sym_hashes (abfd);
5228 if (ppc64_elf_section_data (sec) != NULL
5229 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5230 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5232 rel_end = relocs + sec->reloc_count;
5233 for (rel = relocs; rel < rel_end; rel++)
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h;
5237 enum elf_ppc64_reloc_type r_type;
5239 struct _ppc64_elf_section_data *ppc64_sec;
5240 struct plt_entry **ifunc;
5242 r_symndx = ELF64_R_SYM (rel->r_info);
5243 if (r_symndx < symtab_hdr->sh_info)
5247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5248 h = elf_follow_link (h);
5250 /* PR15323, ref flags aren't set for references in the same
5252 h->root.non_ir_ref = 1;
5254 if (h == htab->elf.hgot)
5255 sec->has_toc_reloc = 1;
5262 if (h->type == STT_GNU_IFUNC)
5265 ifunc = &h->plt.plist;
5270 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5275 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5277 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5278 rel->r_addend, PLT_IFUNC);
5283 r_type = ELF64_R_TYPE (rel->r_info);
5284 if (is_branch_reloc (r_type))
5286 if (h != NULL && (h == tga || h == dottga))
5289 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5290 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5291 /* We have a new-style __tls_get_addr call with a marker
5295 /* Mark this section as having an old-style call. */
5296 sec->has_tls_get_addr_call = 1;
5299 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5301 && !update_plt_info (abfd, ifunc, rel->r_addend))
5309 /* These special tls relocs tie a call to __tls_get_addr with
5310 its parameter symbol. */
5313 case R_PPC64_GOT_TLSLD16:
5314 case R_PPC64_GOT_TLSLD16_LO:
5315 case R_PPC64_GOT_TLSLD16_HI:
5316 case R_PPC64_GOT_TLSLD16_HA:
5317 tls_type = TLS_TLS | TLS_LD;
5320 case R_PPC64_GOT_TLSGD16:
5321 case R_PPC64_GOT_TLSGD16_LO:
5322 case R_PPC64_GOT_TLSGD16_HI:
5323 case R_PPC64_GOT_TLSGD16_HA:
5324 tls_type = TLS_TLS | TLS_GD;
5327 case R_PPC64_GOT_TPREL16_DS:
5328 case R_PPC64_GOT_TPREL16_LO_DS:
5329 case R_PPC64_GOT_TPREL16_HI:
5330 case R_PPC64_GOT_TPREL16_HA:
5332 info->flags |= DF_STATIC_TLS;
5333 tls_type = TLS_TLS | TLS_TPREL;
5336 case R_PPC64_GOT_DTPREL16_DS:
5337 case R_PPC64_GOT_DTPREL16_LO_DS:
5338 case R_PPC64_GOT_DTPREL16_HI:
5339 case R_PPC64_GOT_DTPREL16_HA:
5340 tls_type = TLS_TLS | TLS_DTPREL;
5342 sec->has_tls_reloc = 1;
5346 case R_PPC64_GOT16_DS:
5347 case R_PPC64_GOT16_HA:
5348 case R_PPC64_GOT16_HI:
5349 case R_PPC64_GOT16_LO:
5350 case R_PPC64_GOT16_LO_DS:
5351 /* This symbol requires a global offset table entry. */
5352 sec->has_toc_reloc = 1;
5353 if (r_type == R_PPC64_GOT_TLSLD16
5354 || r_type == R_PPC64_GOT_TLSGD16
5355 || r_type == R_PPC64_GOT_TPREL16_DS
5356 || r_type == R_PPC64_GOT_DTPREL16_DS
5357 || r_type == R_PPC64_GOT16
5358 || r_type == R_PPC64_GOT16_DS)
5360 htab->do_multi_toc = 1;
5361 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5364 if (ppc64_elf_tdata (abfd)->got == NULL
5365 && !create_got_section (abfd, info))
5370 struct ppc_link_hash_entry *eh;
5371 struct got_entry *ent;
5373 eh = (struct ppc_link_hash_entry *) h;
5374 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5375 if (ent->addend == rel->r_addend
5376 && ent->owner == abfd
5377 && ent->tls_type == tls_type)
5381 bfd_size_type amt = sizeof (*ent);
5382 ent = bfd_alloc (abfd, amt);
5385 ent->next = eh->elf.got.glist;
5386 ent->addend = rel->r_addend;
5388 ent->tls_type = tls_type;
5389 ent->is_indirect = FALSE;
5390 ent->got.refcount = 0;
5391 eh->elf.got.glist = ent;
5393 ent->got.refcount += 1;
5394 eh->tls_mask |= tls_type;
5397 /* This is a global offset table entry for a local symbol. */
5398 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5399 rel->r_addend, tls_type))
5402 /* We may also need a plt entry if the symbol turns out to be
5404 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5406 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5411 case R_PPC64_PLT16_HA:
5412 case R_PPC64_PLT16_HI:
5413 case R_PPC64_PLT16_LO:
5416 /* This symbol requires a procedure linkage table entry. We
5417 actually build the entry in adjust_dynamic_symbol,
5418 because this might be a case of linking PIC code without
5419 linking in any dynamic objects, in which case we don't
5420 need to generate a procedure linkage table after all. */
5423 /* It does not make sense to have a procedure linkage
5424 table entry for a local symbol. */
5425 bfd_set_error (bfd_error_bad_value);
5430 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5433 if (h->root.root.string[0] == '.'
5434 && h->root.root.string[1] != '\0')
5435 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5439 /* The following relocations don't need to propagate the
5440 relocation if linking a shared object since they are
5441 section relative. */
5442 case R_PPC64_SECTOFF:
5443 case R_PPC64_SECTOFF_LO:
5444 case R_PPC64_SECTOFF_HI:
5445 case R_PPC64_SECTOFF_HA:
5446 case R_PPC64_SECTOFF_DS:
5447 case R_PPC64_SECTOFF_LO_DS:
5448 case R_PPC64_DTPREL16:
5449 case R_PPC64_DTPREL16_LO:
5450 case R_PPC64_DTPREL16_HI:
5451 case R_PPC64_DTPREL16_HA:
5452 case R_PPC64_DTPREL16_DS:
5453 case R_PPC64_DTPREL16_LO_DS:
5454 case R_PPC64_DTPREL16_HIGH:
5455 case R_PPC64_DTPREL16_HIGHA:
5456 case R_PPC64_DTPREL16_HIGHER:
5457 case R_PPC64_DTPREL16_HIGHERA:
5458 case R_PPC64_DTPREL16_HIGHEST:
5459 case R_PPC64_DTPREL16_HIGHESTA:
5464 case R_PPC64_REL16_LO:
5465 case R_PPC64_REL16_HI:
5466 case R_PPC64_REL16_HA:
5469 /* Not supported as a dynamic relocation. */
5470 case R_PPC64_ADDR64_LOCAL:
5473 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5475 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5476 "in shared libraries and PIEs.\n"),
5477 abfd, sec, rel->r_offset,
5478 ppc64_elf_howto_table[r_type]->name);
5479 bfd_set_error (bfd_error_bad_value);
5485 case R_PPC64_TOC16_DS:
5486 htab->do_multi_toc = 1;
5487 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5488 case R_PPC64_TOC16_LO:
5489 case R_PPC64_TOC16_HI:
5490 case R_PPC64_TOC16_HA:
5491 case R_PPC64_TOC16_LO_DS:
5492 sec->has_toc_reloc = 1;
5495 /* This relocation describes the C++ object vtable hierarchy.
5496 Reconstruct it for later use during GC. */
5497 case R_PPC64_GNU_VTINHERIT:
5498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5502 /* This relocation describes which C++ vtable entries are actually
5503 used. Record for later use during GC. */
5504 case R_PPC64_GNU_VTENTRY:
5505 BFD_ASSERT (h != NULL);
5507 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5512 case R_PPC64_REL14_BRTAKEN:
5513 case R_PPC64_REL14_BRNTAKEN:
5515 asection *dest = NULL;
5517 /* Heuristic: If jumping outside our section, chances are
5518 we are going to need a stub. */
5521 /* If the sym is weak it may be overridden later, so
5522 don't assume we know where a weak sym lives. */
5523 if (h->root.type == bfd_link_hash_defined)
5524 dest = h->root.u.def.section;
5528 Elf_Internal_Sym *isym;
5530 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5535 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5539 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5544 if (h != NULL && ifunc == NULL)
5546 /* We may need a .plt entry if the function this reloc
5547 refers to is in a shared lib. */
5548 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5551 if (h->root.root.string[0] == '.'
5552 && h->root.root.string[1] != '\0')
5553 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5554 if (h == tga || h == dottga)
5555 sec->has_tls_reloc = 1;
5559 case R_PPC64_TPREL64:
5560 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5562 info->flags |= DF_STATIC_TLS;
5565 case R_PPC64_DTPMOD64:
5566 if (rel + 1 < rel_end
5567 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5568 && rel[1].r_offset == rel->r_offset + 8)
5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5574 case R_PPC64_DTPREL64:
5575 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5577 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5578 && rel[-1].r_offset == rel->r_offset - 8)
5579 /* This is the second reloc of a dtpmod, dtprel pair.
5580 Don't mark with TLS_DTPREL. */
5584 sec->has_tls_reloc = 1;
5587 struct ppc_link_hash_entry *eh;
5588 eh = (struct ppc_link_hash_entry *) h;
5589 eh->tls_mask |= tls_type;
5592 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5593 rel->r_addend, tls_type))
5596 ppc64_sec = ppc64_elf_section_data (sec);
5597 if (ppc64_sec->sec_type != sec_toc)
5601 /* One extra to simplify get_tls_mask. */
5602 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5603 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.symndx == NULL)
5606 amt = sec->size * sizeof (bfd_vma) / 8;
5607 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5608 if (ppc64_sec->u.toc.add == NULL)
5610 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5611 ppc64_sec->sec_type = sec_toc;
5613 BFD_ASSERT (rel->r_offset % 8 == 0);
5614 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5615 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5617 /* Mark the second slot of a GD or LD entry.
5618 -1 to indicate GD and -2 to indicate LD. */
5619 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5620 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5621 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5622 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5625 case R_PPC64_TPREL16:
5626 case R_PPC64_TPREL16_LO:
5627 case R_PPC64_TPREL16_HI:
5628 case R_PPC64_TPREL16_HA:
5629 case R_PPC64_TPREL16_DS:
5630 case R_PPC64_TPREL16_LO_DS:
5631 case R_PPC64_TPREL16_HIGH:
5632 case R_PPC64_TPREL16_HIGHA:
5633 case R_PPC64_TPREL16_HIGHER:
5634 case R_PPC64_TPREL16_HIGHERA:
5635 case R_PPC64_TPREL16_HIGHEST:
5636 case R_PPC64_TPREL16_HIGHESTA:
5639 info->flags |= DF_STATIC_TLS;
5644 case R_PPC64_ADDR64:
5645 if (opd_sym_map != NULL
5646 && rel + 1 < rel_end
5647 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5651 if (h->root.root.string[0] == '.'
5652 && h->root.root.string[1] != 0
5653 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5656 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5661 Elf_Internal_Sym *isym;
5663 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5668 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5669 if (s != NULL && s != sec)
5670 opd_sym_map[rel->r_offset / 8] = s;
5675 case R_PPC64_ADDR16:
5676 case R_PPC64_ADDR16_DS:
5677 case R_PPC64_ADDR16_HA:
5678 case R_PPC64_ADDR16_HI:
5679 case R_PPC64_ADDR16_HIGH:
5680 case R_PPC64_ADDR16_HIGHA:
5681 case R_PPC64_ADDR16_HIGHER:
5682 case R_PPC64_ADDR16_HIGHERA:
5683 case R_PPC64_ADDR16_HIGHEST:
5684 case R_PPC64_ADDR16_HIGHESTA:
5685 case R_PPC64_ADDR16_LO:
5686 case R_PPC64_ADDR16_LO_DS:
5687 if (h != NULL && !info->shared && abiversion (abfd) != 1
5688 && rel->r_addend == 0)
5690 /* We may need a .plt entry if this reloc refers to a
5691 function in a shared lib. */
5692 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5694 h->pointer_equality_needed = 1;
5701 case R_PPC64_ADDR14:
5702 case R_PPC64_ADDR14_BRNTAKEN:
5703 case R_PPC64_ADDR14_BRTAKEN:
5704 case R_PPC64_ADDR24:
5705 case R_PPC64_ADDR32:
5706 case R_PPC64_UADDR16:
5707 case R_PPC64_UADDR32:
5708 case R_PPC64_UADDR64:
5710 if (h != NULL && !info->shared)
5711 /* We may need a copy reloc. */
5714 /* Don't propagate .opd relocs. */
5715 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5718 /* If we are creating a shared library, and this is a reloc
5719 against a global symbol, or a non PC relative reloc
5720 against a local symbol, then we need to copy the reloc
5721 into the shared library. However, if we are linking with
5722 -Bsymbolic, we do not need to copy a reloc against a
5723 global symbol which is defined in an object we are
5724 including in the link (i.e., DEF_REGULAR is set). At
5725 this point we have not seen all the input files, so it is
5726 possible that DEF_REGULAR is not set now but will be set
5727 later (it is never cleared). In case of a weak definition,
5728 DEF_REGULAR may be cleared later by a strong definition in
5729 a shared library. We account for that possibility below by
5730 storing information in the dyn_relocs field of the hash
5731 table entry. A similar situation occurs when creating
5732 shared libraries and symbol visibility changes render the
5735 If on the other hand, we are creating an executable, we
5736 may need to keep relocations for symbols satisfied by a
5737 dynamic library if we manage to avoid copy relocs for the
5741 && (must_be_dyn_reloc (info, r_type)
5743 && (!SYMBOLIC_BIND (info, h)
5744 || h->root.type == bfd_link_hash_defweak
5745 || !h->def_regular))))
5746 || (ELIMINATE_COPY_RELOCS
5749 && (h->root.type == bfd_link_hash_defweak
5750 || !h->def_regular))
5754 /* We must copy these reloc types into the output file.
5755 Create a reloc section in dynobj and make room for
5759 sreloc = _bfd_elf_make_dynamic_reloc_section
5760 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5766 /* If this is a global symbol, we count the number of
5767 relocations we need for this symbol. */
5770 struct elf_dyn_relocs *p;
5771 struct elf_dyn_relocs **head;
5773 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5775 if (p == NULL || p->sec != sec)
5777 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5787 if (!must_be_dyn_reloc (info, r_type))
5792 /* Track dynamic relocs needed for local syms too.
5793 We really need local syms available to do this
5795 struct ppc_dyn_relocs *p;
5796 struct ppc_dyn_relocs **head;
5797 bfd_boolean is_ifunc;
5800 Elf_Internal_Sym *isym;
5802 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5807 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5811 vpp = &elf_section_data (s)->local_dynrel;
5812 head = (struct ppc_dyn_relocs **) vpp;
5813 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5815 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5817 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5819 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5825 p->ifunc = is_ifunc;
5841 /* Merge backend specific data from an object file to the output
5842 object file when linking. */
5845 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5847 unsigned long iflags, oflags;
5849 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5852 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5855 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5858 iflags = elf_elfheader (ibfd)->e_flags;
5859 oflags = elf_elfheader (obfd)->e_flags;
5861 if (iflags & ~EF_PPC64_ABI)
5863 (*_bfd_error_handler)
5864 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5865 bfd_set_error (bfd_error_bad_value);
5868 else if (iflags != oflags && iflags != 0)
5870 (*_bfd_error_handler)
5871 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5872 ibfd, iflags, oflags);
5873 bfd_set_error (bfd_error_bad_value);
5877 /* Merge Tag_compatibility attributes and any common GNU ones. */
5878 _bfd_elf_merge_object_attributes (ibfd, obfd);
5884 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5886 /* Print normal ELF private data. */
5887 _bfd_elf_print_private_bfd_data (abfd, ptr);
5889 if (elf_elfheader (abfd)->e_flags != 0)
5893 /* xgettext:c-format */
5894 fprintf (file, _("private flags = 0x%lx:"),
5895 elf_elfheader (abfd)->e_flags);
5897 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5898 fprintf (file, _(" [abiv%ld]"),
5899 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5906 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5907 of the code entry point, and its section. */
5910 opd_entry_value (asection *opd_sec,
5912 asection **code_sec,
5914 bfd_boolean in_code_sec)
5916 bfd *opd_bfd = opd_sec->owner;
5917 Elf_Internal_Rela *relocs;
5918 Elf_Internal_Rela *lo, *hi, *look;
5921 /* No relocs implies we are linking a --just-symbols object, or looking
5922 at a final linked executable with addr2line or somesuch. */
5923 if (opd_sec->reloc_count == 0)
5925 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5927 if (contents == NULL)
5929 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5930 return (bfd_vma) -1;
5931 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5934 val = bfd_get_64 (opd_bfd, contents + offset);
5935 if (code_sec != NULL)
5937 asection *sec, *likely = NULL;
5943 && val < sec->vma + sec->size)
5949 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5951 && (sec->flags & SEC_LOAD) != 0
5952 && (sec->flags & SEC_ALLOC) != 0)
5957 if (code_off != NULL)
5958 *code_off = val - likely->vma;
5964 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5966 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5968 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5970 /* Go find the opd reloc at the sym address. */
5972 BFD_ASSERT (lo != NULL);
5973 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5977 look = lo + (hi - lo) / 2;
5978 if (look->r_offset < offset)
5980 else if (look->r_offset > offset)
5984 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5986 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5987 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5989 unsigned long symndx = ELF64_R_SYM (look->r_info);
5992 if (symndx < symtab_hdr->sh_info
5993 || elf_sym_hashes (opd_bfd) == NULL)
5995 Elf_Internal_Sym *sym;
5997 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6000 size_t symcnt = symtab_hdr->sh_info;
6001 if (elf_sym_hashes (opd_bfd) == NULL)
6002 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
6003 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
6004 0, NULL, NULL, NULL);
6007 symtab_hdr->contents = (bfd_byte *) sym;
6011 val = sym->st_value;
6012 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6013 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6017 struct elf_link_hash_entry **sym_hashes;
6018 struct elf_link_hash_entry *rh;
6020 sym_hashes = elf_sym_hashes (opd_bfd);
6021 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6024 rh = elf_follow_link (rh);
6025 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6026 || rh->root.type == bfd_link_hash_defweak);
6027 val = rh->root.u.def.value;
6028 sec = rh->root.u.def.section;
6032 /* Handle the odd case where we can be called
6033 during bfd_elf_link_add_symbols before the
6034 symbol hashes have been fully populated. */
6035 Elf_Internal_Sym *sym;
6037 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6038 symndx, NULL, NULL, NULL);
6042 val = sym->st_value;
6043 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6047 val += look->r_addend;
6048 if (code_off != NULL)
6050 if (code_sec != NULL)
6052 if (in_code_sec && *code_sec != sec)
6057 if (sec != NULL && sec->output_section != NULL)
6058 val += sec->output_section->vma + sec->output_offset;
6067 /* If the ELF symbol SYM might be a function in SEC, return the
6068 function size and set *CODE_OFF to the function's entry point,
6069 otherwise return zero. */
6071 static bfd_size_type
6072 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6077 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6078 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6082 if (!(sym->flags & BSF_SYNTHETIC))
6083 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6085 if (strcmp (sym->section->name, ".opd") == 0)
6087 if (opd_entry_value (sym->section, sym->value,
6088 &sec, code_off, TRUE) == (bfd_vma) -1)
6090 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6091 symbol. This size has nothing to do with the code size of the
6092 function, which is what we're supposed to return, but the
6093 code size isn't available without looking up the dot-sym.
6094 However, doing that would be a waste of time particularly
6095 since elf_find_function will look at the dot-sym anyway.
6096 Now, elf_find_function will keep the largest size of any
6097 function sym found at the code address of interest, so return
6098 1 here to avoid it incorrectly caching a larger function size
6099 for a small function. This does mean we return the wrong
6100 size for a new-ABI function of size 24, but all that does is
6101 disable caching for such functions. */
6107 if (sym->section != sec)
6109 *code_off = sym->value;
6116 /* Return true if symbol is defined in a regular object file. */
6119 is_static_defined (struct elf_link_hash_entry *h)
6121 return ((h->root.type == bfd_link_hash_defined
6122 || h->root.type == bfd_link_hash_defweak)
6123 && h->root.u.def.section != NULL
6124 && h->root.u.def.section->output_section != NULL);
6127 /* If FDH is a function descriptor symbol, return the associated code
6128 entry symbol if it is defined. Return NULL otherwise. */
6130 static struct ppc_link_hash_entry *
6131 defined_code_entry (struct ppc_link_hash_entry *fdh)
6133 if (fdh->is_func_descriptor)
6135 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6136 if (fh->elf.root.type == bfd_link_hash_defined
6137 || fh->elf.root.type == bfd_link_hash_defweak)
6143 /* If FH is a function code entry symbol, return the associated
6144 function descriptor symbol if it is defined. Return NULL otherwise. */
6146 static struct ppc_link_hash_entry *
6147 defined_func_desc (struct ppc_link_hash_entry *fh)
6150 && fh->oh->is_func_descriptor)
6152 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6153 if (fdh->elf.root.type == bfd_link_hash_defined
6154 || fdh->elf.root.type == bfd_link_hash_defweak)
6160 /* Mark all our entry sym sections, both opd and code section. */
6163 ppc64_elf_gc_keep (struct bfd_link_info *info)
6165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6166 struct bfd_sym_chain *sym;
6171 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6173 struct ppc_link_hash_entry *eh, *fh;
6176 eh = (struct ppc_link_hash_entry *)
6177 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6180 if (eh->elf.root.type != bfd_link_hash_defined
6181 && eh->elf.root.type != bfd_link_hash_defweak)
6184 fh = defined_code_entry (eh);
6187 sec = fh->elf.root.u.def.section;
6188 sec->flags |= SEC_KEEP;
6190 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6191 && opd_entry_value (eh->elf.root.u.def.section,
6192 eh->elf.root.u.def.value,
6193 &sec, NULL, FALSE) != (bfd_vma) -1)
6194 sec->flags |= SEC_KEEP;
6196 sec = eh->elf.root.u.def.section;
6197 sec->flags |= SEC_KEEP;
6201 /* Mark sections containing dynamically referenced symbols. When
6202 building shared libraries, we must assume that any visible symbol is
6206 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6208 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6209 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6210 struct ppc_link_hash_entry *fdh;
6211 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6213 /* Dynamic linking info is on the func descriptor sym. */
6214 fdh = defined_func_desc (eh);
6218 if ((eh->elf.root.type == bfd_link_hash_defined
6219 || eh->elf.root.type == bfd_link_hash_defweak)
6220 && (eh->elf.ref_dynamic
6221 || (eh->elf.def_regular
6222 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6223 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6224 && (!info->executable
6225 || info->export_dynamic
6228 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6229 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6230 || !bfd_hide_sym_by_version (info->version_info,
6231 eh->elf.root.root.string)))))
6234 struct ppc_link_hash_entry *fh;
6236 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6238 /* Function descriptor syms cause the associated
6239 function code sym section to be marked. */
6240 fh = defined_code_entry (eh);
6243 code_sec = fh->elf.root.u.def.section;
6244 code_sec->flags |= SEC_KEEP;
6246 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6247 && opd_entry_value (eh->elf.root.u.def.section,
6248 eh->elf.root.u.def.value,
6249 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6250 code_sec->flags |= SEC_KEEP;
6256 /* Return the section that should be marked against GC for a given
6260 ppc64_elf_gc_mark_hook (asection *sec,
6261 struct bfd_link_info *info,
6262 Elf_Internal_Rela *rel,
6263 struct elf_link_hash_entry *h,
6264 Elf_Internal_Sym *sym)
6268 /* Syms return NULL if we're marking .opd, so we avoid marking all
6269 function sections, as all functions are referenced in .opd. */
6271 if (get_opd_info (sec) != NULL)
6276 enum elf_ppc64_reloc_type r_type;
6277 struct ppc_link_hash_entry *eh, *fh, *fdh;
6279 r_type = ELF64_R_TYPE (rel->r_info);
6282 case R_PPC64_GNU_VTINHERIT:
6283 case R_PPC64_GNU_VTENTRY:
6287 switch (h->root.type)
6289 case bfd_link_hash_defined:
6290 case bfd_link_hash_defweak:
6291 eh = (struct ppc_link_hash_entry *) h;
6292 fdh = defined_func_desc (eh);
6296 /* Function descriptor syms cause the associated
6297 function code sym section to be marked. */
6298 fh = defined_code_entry (eh);
6301 /* They also mark their opd section. */
6302 eh->elf.root.u.def.section->gc_mark = 1;
6304 rsec = fh->elf.root.u.def.section;
6306 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6307 && opd_entry_value (eh->elf.root.u.def.section,
6308 eh->elf.root.u.def.value,
6309 &rsec, NULL, FALSE) != (bfd_vma) -1)
6310 eh->elf.root.u.def.section->gc_mark = 1;
6312 rsec = h->root.u.def.section;
6315 case bfd_link_hash_common:
6316 rsec = h->root.u.c.p->section;
6320 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6326 struct _opd_sec_data *opd;
6328 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6329 opd = get_opd_info (rsec);
6330 if (opd != NULL && opd->func_sec != NULL)
6334 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6341 /* Update the .got, .plt. and dynamic reloc reference counts for the
6342 section being removed. */
6345 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6346 asection *sec, const Elf_Internal_Rela *relocs)
6348 struct ppc_link_hash_table *htab;
6349 Elf_Internal_Shdr *symtab_hdr;
6350 struct elf_link_hash_entry **sym_hashes;
6351 struct got_entry **local_got_ents;
6352 const Elf_Internal_Rela *rel, *relend;
6354 if (info->relocatable)
6357 if ((sec->flags & SEC_ALLOC) == 0)
6360 elf_section_data (sec)->local_dynrel = NULL;
6362 htab = ppc_hash_table (info);
6366 symtab_hdr = &elf_symtab_hdr (abfd);
6367 sym_hashes = elf_sym_hashes (abfd);
6368 local_got_ents = elf_local_got_ents (abfd);
6370 relend = relocs + sec->reloc_count;
6371 for (rel = relocs; rel < relend; rel++)
6373 unsigned long r_symndx;
6374 enum elf_ppc64_reloc_type r_type;
6375 struct elf_link_hash_entry *h = NULL;
6376 unsigned char tls_type = 0;
6378 r_symndx = ELF64_R_SYM (rel->r_info);
6379 r_type = ELF64_R_TYPE (rel->r_info);
6380 if (r_symndx >= symtab_hdr->sh_info)
6382 struct ppc_link_hash_entry *eh;
6383 struct elf_dyn_relocs **pp;
6384 struct elf_dyn_relocs *p;
6386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6387 h = elf_follow_link (h);
6388 eh = (struct ppc_link_hash_entry *) h;
6390 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6393 /* Everything must go for SEC. */
6399 if (is_branch_reloc (r_type))
6401 struct plt_entry **ifunc = NULL;
6404 if (h->type == STT_GNU_IFUNC)
6405 ifunc = &h->plt.plist;
6407 else if (local_got_ents != NULL)
6409 struct plt_entry **local_plt = (struct plt_entry **)
6410 (local_got_ents + symtab_hdr->sh_info);
6411 unsigned char *local_got_tls_masks = (unsigned char *)
6412 (local_plt + symtab_hdr->sh_info);
6413 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6414 ifunc = local_plt + r_symndx;
6418 struct plt_entry *ent;
6420 for (ent = *ifunc; ent != NULL; ent = ent->next)
6421 if (ent->addend == rel->r_addend)
6425 if (ent->plt.refcount > 0)
6426 ent->plt.refcount -= 1;
6433 case R_PPC64_GOT_TLSLD16:
6434 case R_PPC64_GOT_TLSLD16_LO:
6435 case R_PPC64_GOT_TLSLD16_HI:
6436 case R_PPC64_GOT_TLSLD16_HA:
6437 tls_type = TLS_TLS | TLS_LD;
6440 case R_PPC64_GOT_TLSGD16:
6441 case R_PPC64_GOT_TLSGD16_LO:
6442 case R_PPC64_GOT_TLSGD16_HI:
6443 case R_PPC64_GOT_TLSGD16_HA:
6444 tls_type = TLS_TLS | TLS_GD;
6447 case R_PPC64_GOT_TPREL16_DS:
6448 case R_PPC64_GOT_TPREL16_LO_DS:
6449 case R_PPC64_GOT_TPREL16_HI:
6450 case R_PPC64_GOT_TPREL16_HA:
6451 tls_type = TLS_TLS | TLS_TPREL;
6454 case R_PPC64_GOT_DTPREL16_DS:
6455 case R_PPC64_GOT_DTPREL16_LO_DS:
6456 case R_PPC64_GOT_DTPREL16_HI:
6457 case R_PPC64_GOT_DTPREL16_HA:
6458 tls_type = TLS_TLS | TLS_DTPREL;
6462 case R_PPC64_GOT16_DS:
6463 case R_PPC64_GOT16_HA:
6464 case R_PPC64_GOT16_HI:
6465 case R_PPC64_GOT16_LO:
6466 case R_PPC64_GOT16_LO_DS:
6469 struct got_entry *ent;
6474 ent = local_got_ents[r_symndx];
6476 for (; ent != NULL; ent = ent->next)
6477 if (ent->addend == rel->r_addend
6478 && ent->owner == abfd
6479 && ent->tls_type == tls_type)
6483 if (ent->got.refcount > 0)
6484 ent->got.refcount -= 1;
6488 case R_PPC64_PLT16_HA:
6489 case R_PPC64_PLT16_HI:
6490 case R_PPC64_PLT16_LO:
6494 case R_PPC64_REL14_BRNTAKEN:
6495 case R_PPC64_REL14_BRTAKEN:
6499 struct plt_entry *ent;
6501 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6502 if (ent->addend == rel->r_addend)
6504 if (ent != NULL && ent->plt.refcount > 0)
6505 ent->plt.refcount -= 1;
6516 /* The maximum size of .sfpr. */
6517 #define SFPR_MAX (218*4)
6519 struct sfpr_def_parms
6521 const char name[12];
6522 unsigned char lo, hi;
6523 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6524 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6527 /* Auto-generate _save*, _rest* functions in .sfpr. */
6530 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6532 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6534 size_t len = strlen (parm->name);
6535 bfd_boolean writing = FALSE;
6541 memcpy (sym, parm->name, len);
6544 for (i = parm->lo; i <= parm->hi; i++)
6546 struct elf_link_hash_entry *h;
6548 sym[len + 0] = i / 10 + '0';
6549 sym[len + 1] = i % 10 + '0';
6550 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6554 h->root.type = bfd_link_hash_defined;
6555 h->root.u.def.section = htab->sfpr;
6556 h->root.u.def.value = htab->sfpr->size;
6559 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6561 if (htab->sfpr->contents == NULL)
6563 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6564 if (htab->sfpr->contents == NULL)
6570 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6572 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6574 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6575 htab->sfpr->size = p - htab->sfpr->contents;
6583 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6585 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6590 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6592 p = savegpr0 (abfd, p, r);
6593 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6595 bfd_put_32 (abfd, BLR, p);
6600 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6602 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6607 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6609 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6611 p = restgpr0 (abfd, p, r);
6612 bfd_put_32 (abfd, MTLR_R0, p);
6616 p = restgpr0 (abfd, p, 30);
6617 p = restgpr0 (abfd, p, 31);
6619 bfd_put_32 (abfd, BLR, p);
6624 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6626 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6631 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6633 p = savegpr1 (abfd, p, r);
6634 bfd_put_32 (abfd, BLR, p);
6639 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6641 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6646 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6648 p = restgpr1 (abfd, p, r);
6649 bfd_put_32 (abfd, BLR, p);
6654 savefpr (bfd *abfd, bfd_byte *p, int r)
6656 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6661 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6663 p = savefpr (abfd, p, r);
6664 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6666 bfd_put_32 (abfd, BLR, p);
6671 restfpr (bfd *abfd, bfd_byte *p, int r)
6673 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6678 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6680 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6682 p = restfpr (abfd, p, r);
6683 bfd_put_32 (abfd, MTLR_R0, p);
6687 p = restfpr (abfd, p, 30);
6688 p = restfpr (abfd, p, 31);
6690 bfd_put_32 (abfd, BLR, p);
6695 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6697 p = savefpr (abfd, p, r);
6698 bfd_put_32 (abfd, BLR, p);
6703 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6705 p = restfpr (abfd, p, r);
6706 bfd_put_32 (abfd, BLR, p);
6711 savevr (bfd *abfd, bfd_byte *p, int r)
6713 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6715 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6720 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6722 p = savevr (abfd, p, r);
6723 bfd_put_32 (abfd, BLR, p);
6728 restvr (bfd *abfd, bfd_byte *p, int r)
6730 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6732 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6737 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6739 p = restvr (abfd, p, r);
6740 bfd_put_32 (abfd, BLR, p);
6744 /* Called via elf_link_hash_traverse to transfer dynamic linking
6745 information on function code symbol entries to their corresponding
6746 function descriptor symbol entries. */
6749 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6751 struct bfd_link_info *info;
6752 struct ppc_link_hash_table *htab;
6753 struct plt_entry *ent;
6754 struct ppc_link_hash_entry *fh;
6755 struct ppc_link_hash_entry *fdh;
6756 bfd_boolean force_local;
6758 fh = (struct ppc_link_hash_entry *) h;
6759 if (fh->elf.root.type == bfd_link_hash_indirect)
6763 htab = ppc_hash_table (info);
6767 /* Resolve undefined references to dot-symbols as the value
6768 in the function descriptor, if we have one in a regular object.
6769 This is to satisfy cases like ".quad .foo". Calls to functions
6770 in dynamic objects are handled elsewhere. */
6771 if (fh->elf.root.type == bfd_link_hash_undefweak
6772 && fh->was_undefined
6773 && (fdh = defined_func_desc (fh)) != NULL
6774 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6775 && opd_entry_value (fdh->elf.root.u.def.section,
6776 fdh->elf.root.u.def.value,
6777 &fh->elf.root.u.def.section,
6778 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6780 fh->elf.root.type = fdh->elf.root.type;
6781 fh->elf.forced_local = 1;
6782 fh->elf.def_regular = fdh->elf.def_regular;
6783 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6786 /* If this is a function code symbol, transfer dynamic linking
6787 information to the function descriptor symbol. */
6791 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6792 if (ent->plt.refcount > 0)
6795 || fh->elf.root.root.string[0] != '.'
6796 || fh->elf.root.root.string[1] == '\0')
6799 /* Find the corresponding function descriptor symbol. Create it
6800 as undefined if necessary. */
6802 fdh = lookup_fdh (fh, htab);
6804 && !info->executable
6805 && (fh->elf.root.type == bfd_link_hash_undefined
6806 || fh->elf.root.type == bfd_link_hash_undefweak))
6808 fdh = make_fdh (info, fh);
6813 /* Fake function descriptors are made undefweak. If the function
6814 code symbol is strong undefined, make the fake sym the same.
6815 If the function code symbol is defined, then force the fake
6816 descriptor local; We can't support overriding of symbols in a
6817 shared library on a fake descriptor. */
6821 && fdh->elf.root.type == bfd_link_hash_undefweak)
6823 if (fh->elf.root.type == bfd_link_hash_undefined)
6825 fdh->elf.root.type = bfd_link_hash_undefined;
6826 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6828 else if (fh->elf.root.type == bfd_link_hash_defined
6829 || fh->elf.root.type == bfd_link_hash_defweak)
6831 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6836 && !fdh->elf.forced_local
6837 && (!info->executable
6838 || fdh->elf.def_dynamic
6839 || fdh->elf.ref_dynamic
6840 || (fdh->elf.root.type == bfd_link_hash_undefweak
6841 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6843 if (fdh->elf.dynindx == -1)
6844 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6846 fdh->elf.ref_regular |= fh->elf.ref_regular;
6847 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6848 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6849 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6850 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6852 move_plt_plist (fh, fdh);
6853 fdh->elf.needs_plt = 1;
6855 fdh->is_func_descriptor = 1;
6860 /* Now that the info is on the function descriptor, clear the
6861 function code sym info. Any function code syms for which we
6862 don't have a definition in a regular file, we force local.
6863 This prevents a shared library from exporting syms that have
6864 been imported from another library. Function code syms that
6865 are really in the library we must leave global to prevent the
6866 linker dragging in a definition from a static library. */
6867 force_local = (!fh->elf.def_regular
6869 || !fdh->elf.def_regular
6870 || fdh->elf.forced_local);
6871 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6876 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6877 this hook to a) provide some gcc support functions, and b) transfer
6878 dynamic linking information gathered so far on function code symbol
6879 entries, to their corresponding function descriptor symbol entries. */
6882 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6883 struct bfd_link_info *info)
6885 struct ppc_link_hash_table *htab;
6887 static const struct sfpr_def_parms funcs[] =
6889 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6890 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6891 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6892 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6893 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6894 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6895 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6896 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6897 { "._savef", 14, 31, savefpr, savefpr1_tail },
6898 { "._restf", 14, 31, restfpr, restfpr1_tail },
6899 { "_savevr_", 20, 31, savevr, savevr_tail },
6900 { "_restvr_", 20, 31, restvr, restvr_tail }
6903 htab = ppc_hash_table (info);
6907 if (!info->relocatable
6908 && htab->elf.hgot != NULL)
6910 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6911 /* Make .TOC. defined so as to prevent it being made dynamic.
6912 The wrong value here is fixed later in ppc64_elf_set_toc. */
6913 htab->elf.hgot->type = STT_OBJECT;
6914 htab->elf.hgot->root.type = bfd_link_hash_defined;
6915 htab->elf.hgot->root.u.def.value = 0;
6916 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6917 htab->elf.hgot->def_regular = 1;
6918 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6922 if (htab->sfpr == NULL)
6923 /* We don't have any relocs. */
6926 /* Provide any missing _save* and _rest* functions. */
6927 htab->sfpr->size = 0;
6928 if (htab->params->save_restore_funcs)
6929 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6930 if (!sfpr_define (info, &funcs[i]))
6933 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6935 if (htab->sfpr->size == 0)
6936 htab->sfpr->flags |= SEC_EXCLUDE;
6941 /* Return true if we have dynamic relocs that apply to read-only sections. */
6944 readonly_dynrelocs (struct elf_link_hash_entry *h)
6946 struct ppc_link_hash_entry *eh;
6947 struct elf_dyn_relocs *p;
6949 eh = (struct ppc_link_hash_entry *) h;
6950 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6952 asection *s = p->sec->output_section;
6954 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6960 /* Adjust a symbol defined by a dynamic object and referenced by a
6961 regular object. The current definition is in some section of the
6962 dynamic object, but we're not including those sections. We have to
6963 change the definition to something the rest of the link can
6967 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6968 struct elf_link_hash_entry *h)
6970 struct ppc_link_hash_table *htab;
6973 htab = ppc_hash_table (info);
6977 /* Deal with function syms. */
6978 if (h->type == STT_FUNC
6979 || h->type == STT_GNU_IFUNC
6982 /* Clear procedure linkage table information for any symbol that
6983 won't need a .plt entry. */
6984 struct plt_entry *ent;
6985 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6986 if (ent->plt.refcount > 0)
6989 || (h->type != STT_GNU_IFUNC
6990 && (SYMBOL_CALLS_LOCAL (info, h)
6991 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6992 && h->root.type == bfd_link_hash_undefweak))))
6994 h->plt.plist = NULL;
6996 h->pointer_equality_needed = 0;
6998 else if (abiversion (info->output_bfd) == 2)
7000 /* Taking a function's address in a read/write section
7001 doesn't require us to define the function symbol in the
7002 executable on a global entry stub. A dynamic reloc can
7004 if (h->pointer_equality_needed
7005 && h->type != STT_GNU_IFUNC
7006 && !readonly_dynrelocs (h))
7008 h->pointer_equality_needed = 0;
7012 /* After adjust_dynamic_symbol, non_got_ref set in the
7013 non-shared case means that we have allocated space in
7014 .dynbss for the symbol and thus dyn_relocs for this
7015 symbol should be discarded.
7016 If we get here we know we are making a PLT entry for this
7017 symbol, and in an executable we'd normally resolve
7018 relocations against this symbol to the PLT entry. Allow
7019 dynamic relocs if the reference is weak, and the dynamic
7020 relocs will not cause text relocation. */
7021 else if (!h->ref_regular_nonweak
7023 && h->type != STT_GNU_IFUNC
7024 && !readonly_dynrelocs (h))
7027 /* If making a plt entry, then we don't need copy relocs. */
7032 h->plt.plist = NULL;
7034 /* If this is a weak symbol, and there is a real definition, the
7035 processor independent code will have arranged for us to see the
7036 real definition first, and we can just use the same value. */
7037 if (h->u.weakdef != NULL)
7039 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7040 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7041 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7042 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7043 if (ELIMINATE_COPY_RELOCS)
7044 h->non_got_ref = h->u.weakdef->non_got_ref;
7048 /* If we are creating a shared library, we must presume that the
7049 only references to the symbol are via the global offset table.
7050 For such cases we need not do anything here; the relocations will
7051 be handled correctly by relocate_section. */
7055 /* If there are no references to this symbol that do not use the
7056 GOT, we don't need to generate a copy reloc. */
7057 if (!h->non_got_ref)
7060 /* Don't generate a copy reloc for symbols defined in the executable. */
7061 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7064 /* If we didn't find any dynamic relocs in read-only sections, then
7065 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7066 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7072 if (h->plt.plist != NULL)
7074 /* We should never get here, but unfortunately there are versions
7075 of gcc out there that improperly (for this ABI) put initialized
7076 function pointers, vtable refs and suchlike in read-only
7077 sections. Allow them to proceed, but warn that this might
7078 break at runtime. */
7079 info->callbacks->einfo
7080 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7081 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7082 h->root.root.string);
7085 /* This is a reference to a symbol defined by a dynamic object which
7086 is not a function. */
7088 /* We must allocate the symbol in our .dynbss section, which will
7089 become part of the .bss section of the executable. There will be
7090 an entry for this symbol in the .dynsym section. The dynamic
7091 object will contain position independent code, so all references
7092 from the dynamic object to this symbol will go through the global
7093 offset table. The dynamic linker will use the .dynsym entry to
7094 determine the address it must put in the global offset table, so
7095 both the dynamic object and the regular object will refer to the
7096 same memory location for the variable. */
7098 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7099 to copy the initial value out of the dynamic object and into the
7100 runtime process image. We need to remember the offset into the
7101 .rela.bss section we are going to use. */
7102 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7104 htab->relbss->size += sizeof (Elf64_External_Rela);
7110 return _bfd_elf_adjust_dynamic_copy (h, s);
7113 /* If given a function descriptor symbol, hide both the function code
7114 sym and the descriptor. */
7116 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7117 struct elf_link_hash_entry *h,
7118 bfd_boolean force_local)
7120 struct ppc_link_hash_entry *eh;
7121 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7123 eh = (struct ppc_link_hash_entry *) h;
7124 if (eh->is_func_descriptor)
7126 struct ppc_link_hash_entry *fh = eh->oh;
7131 struct ppc_link_hash_table *htab;
7134 /* We aren't supposed to use alloca in BFD because on
7135 systems which do not have alloca the version in libiberty
7136 calls xmalloc, which might cause the program to crash
7137 when it runs out of memory. This function doesn't have a
7138 return status, so there's no way to gracefully return an
7139 error. So cheat. We know that string[-1] can be safely
7140 accessed; It's either a string in an ELF string table,
7141 or allocated in an objalloc structure. */
7143 p = eh->elf.root.root.string - 1;
7146 htab = ppc_hash_table (info);
7150 fh = (struct ppc_link_hash_entry *)
7151 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7154 /* Unfortunately, if it so happens that the string we were
7155 looking for was allocated immediately before this string,
7156 then we overwrote the string terminator. That's the only
7157 reason the lookup should fail. */
7160 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7161 while (q >= eh->elf.root.root.string && *q == *p)
7163 if (q < eh->elf.root.root.string && *p == '.')
7164 fh = (struct ppc_link_hash_entry *)
7165 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7174 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7179 get_sym_h (struct elf_link_hash_entry **hp,
7180 Elf_Internal_Sym **symp,
7182 unsigned char **tls_maskp,
7183 Elf_Internal_Sym **locsymsp,
7184 unsigned long r_symndx,
7187 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7189 if (r_symndx >= symtab_hdr->sh_info)
7191 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7192 struct elf_link_hash_entry *h;
7194 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7195 h = elf_follow_link (h);
7203 if (symsecp != NULL)
7205 asection *symsec = NULL;
7206 if (h->root.type == bfd_link_hash_defined
7207 || h->root.type == bfd_link_hash_defweak)
7208 symsec = h->root.u.def.section;
7212 if (tls_maskp != NULL)
7214 struct ppc_link_hash_entry *eh;
7216 eh = (struct ppc_link_hash_entry *) h;
7217 *tls_maskp = &eh->tls_mask;
7222 Elf_Internal_Sym *sym;
7223 Elf_Internal_Sym *locsyms = *locsymsp;
7225 if (locsyms == NULL)
7227 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7228 if (locsyms == NULL)
7229 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7230 symtab_hdr->sh_info,
7231 0, NULL, NULL, NULL);
7232 if (locsyms == NULL)
7234 *locsymsp = locsyms;
7236 sym = locsyms + r_symndx;
7244 if (symsecp != NULL)
7245 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7247 if (tls_maskp != NULL)
7249 struct got_entry **lgot_ents;
7250 unsigned char *tls_mask;
7253 lgot_ents = elf_local_got_ents (ibfd);
7254 if (lgot_ents != NULL)
7256 struct plt_entry **local_plt = (struct plt_entry **)
7257 (lgot_ents + symtab_hdr->sh_info);
7258 unsigned char *lgot_masks = (unsigned char *)
7259 (local_plt + symtab_hdr->sh_info);
7260 tls_mask = &lgot_masks[r_symndx];
7262 *tls_maskp = tls_mask;
7268 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7269 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7270 type suitable for optimization, and 1 otherwise. */
7273 get_tls_mask (unsigned char **tls_maskp,
7274 unsigned long *toc_symndx,
7275 bfd_vma *toc_addend,
7276 Elf_Internal_Sym **locsymsp,
7277 const Elf_Internal_Rela *rel,
7280 unsigned long r_symndx;
7282 struct elf_link_hash_entry *h;
7283 Elf_Internal_Sym *sym;
7287 r_symndx = ELF64_R_SYM (rel->r_info);
7288 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7291 if ((*tls_maskp != NULL && **tls_maskp != 0)
7293 || ppc64_elf_section_data (sec) == NULL
7294 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7297 /* Look inside a TOC section too. */
7300 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7301 off = h->root.u.def.value;
7304 off = sym->st_value;
7305 off += rel->r_addend;
7306 BFD_ASSERT (off % 8 == 0);
7307 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7308 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7309 if (toc_symndx != NULL)
7310 *toc_symndx = r_symndx;
7311 if (toc_addend != NULL)
7312 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7313 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7315 if ((h == NULL || is_static_defined (h))
7316 && (next_r == -1 || next_r == -2))
7321 /* Find (or create) an entry in the tocsave hash table. */
7323 static struct tocsave_entry *
7324 tocsave_find (struct ppc_link_hash_table *htab,
7325 enum insert_option insert,
7326 Elf_Internal_Sym **local_syms,
7327 const Elf_Internal_Rela *irela,
7330 unsigned long r_indx;
7331 struct elf_link_hash_entry *h;
7332 Elf_Internal_Sym *sym;
7333 struct tocsave_entry ent, *p;
7335 struct tocsave_entry **slot;
7337 r_indx = ELF64_R_SYM (irela->r_info);
7338 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7340 if (ent.sec == NULL || ent.sec->output_section == NULL)
7342 (*_bfd_error_handler)
7343 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7348 ent.offset = h->root.u.def.value;
7350 ent.offset = sym->st_value;
7351 ent.offset += irela->r_addend;
7353 hash = tocsave_htab_hash (&ent);
7354 slot = ((struct tocsave_entry **)
7355 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7361 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7370 /* Adjust all global syms defined in opd sections. In gcc generated
7371 code for the old ABI, these will already have been done. */
7374 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7376 struct ppc_link_hash_entry *eh;
7378 struct _opd_sec_data *opd;
7380 if (h->root.type == bfd_link_hash_indirect)
7383 if (h->root.type != bfd_link_hash_defined
7384 && h->root.type != bfd_link_hash_defweak)
7387 eh = (struct ppc_link_hash_entry *) h;
7388 if (eh->adjust_done)
7391 sym_sec = eh->elf.root.u.def.section;
7392 opd = get_opd_info (sym_sec);
7393 if (opd != NULL && opd->adjust != NULL)
7395 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7398 /* This entry has been deleted. */
7399 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7402 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7403 if (discarded_section (dsec))
7405 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7409 eh->elf.root.u.def.value = 0;
7410 eh->elf.root.u.def.section = dsec;
7413 eh->elf.root.u.def.value += adjust;
7414 eh->adjust_done = 1;
7419 /* Handles decrementing dynamic reloc counts for the reloc specified by
7420 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7421 have already been determined. */
7424 dec_dynrel_count (bfd_vma r_info,
7426 struct bfd_link_info *info,
7427 Elf_Internal_Sym **local_syms,
7428 struct elf_link_hash_entry *h,
7429 Elf_Internal_Sym *sym)
7431 enum elf_ppc64_reloc_type r_type;
7432 asection *sym_sec = NULL;
7434 /* Can this reloc be dynamic? This switch, and later tests here
7435 should be kept in sync with the code in check_relocs. */
7436 r_type = ELF64_R_TYPE (r_info);
7442 case R_PPC64_TPREL16:
7443 case R_PPC64_TPREL16_LO:
7444 case R_PPC64_TPREL16_HI:
7445 case R_PPC64_TPREL16_HA:
7446 case R_PPC64_TPREL16_DS:
7447 case R_PPC64_TPREL16_LO_DS:
7448 case R_PPC64_TPREL16_HIGH:
7449 case R_PPC64_TPREL16_HIGHA:
7450 case R_PPC64_TPREL16_HIGHER:
7451 case R_PPC64_TPREL16_HIGHERA:
7452 case R_PPC64_TPREL16_HIGHEST:
7453 case R_PPC64_TPREL16_HIGHESTA:
7457 case R_PPC64_TPREL64:
7458 case R_PPC64_DTPMOD64:
7459 case R_PPC64_DTPREL64:
7460 case R_PPC64_ADDR64:
7464 case R_PPC64_ADDR14:
7465 case R_PPC64_ADDR14_BRNTAKEN:
7466 case R_PPC64_ADDR14_BRTAKEN:
7467 case R_PPC64_ADDR16:
7468 case R_PPC64_ADDR16_DS:
7469 case R_PPC64_ADDR16_HA:
7470 case R_PPC64_ADDR16_HI:
7471 case R_PPC64_ADDR16_HIGH:
7472 case R_PPC64_ADDR16_HIGHA:
7473 case R_PPC64_ADDR16_HIGHER:
7474 case R_PPC64_ADDR16_HIGHERA:
7475 case R_PPC64_ADDR16_HIGHEST:
7476 case R_PPC64_ADDR16_HIGHESTA:
7477 case R_PPC64_ADDR16_LO:
7478 case R_PPC64_ADDR16_LO_DS:
7479 case R_PPC64_ADDR24:
7480 case R_PPC64_ADDR32:
7481 case R_PPC64_UADDR16:
7482 case R_PPC64_UADDR32:
7483 case R_PPC64_UADDR64:
7488 if (local_syms != NULL)
7490 unsigned long r_symndx;
7491 bfd *ibfd = sec->owner;
7493 r_symndx = ELF64_R_SYM (r_info);
7494 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7499 && (must_be_dyn_reloc (info, r_type)
7501 && (!SYMBOLIC_BIND (info, h)
7502 || h->root.type == bfd_link_hash_defweak
7503 || !h->def_regular))))
7504 || (ELIMINATE_COPY_RELOCS
7507 && (h->root.type == bfd_link_hash_defweak
7508 || !h->def_regular)))
7515 struct elf_dyn_relocs *p;
7516 struct elf_dyn_relocs **pp;
7517 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7519 /* elf_gc_sweep may have already removed all dyn relocs associated
7520 with local syms for a given section. Also, symbol flags are
7521 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7522 report a dynreloc miscount. */
7523 if (*pp == NULL && info->gc_sections)
7526 while ((p = *pp) != NULL)
7530 if (!must_be_dyn_reloc (info, r_type))
7542 struct ppc_dyn_relocs *p;
7543 struct ppc_dyn_relocs **pp;
7545 bfd_boolean is_ifunc;
7547 if (local_syms == NULL)
7548 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7549 if (sym_sec == NULL)
7552 vpp = &elf_section_data (sym_sec)->local_dynrel;
7553 pp = (struct ppc_dyn_relocs **) vpp;
7555 if (*pp == NULL && info->gc_sections)
7558 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7559 while ((p = *pp) != NULL)
7561 if (p->sec == sec && p->ifunc == is_ifunc)
7572 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7574 bfd_set_error (bfd_error_bad_value);
7578 /* Remove unused Official Procedure Descriptor entries. Currently we
7579 only remove those associated with functions in discarded link-once
7580 sections, or weakly defined functions that have been overridden. It
7581 would be possible to remove many more entries for statically linked
7585 ppc64_elf_edit_opd (struct bfd_link_info *info)
7588 bfd_boolean some_edited = FALSE;
7589 asection *need_pad = NULL;
7590 struct ppc_link_hash_table *htab;
7592 htab = ppc_hash_table (info);
7596 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7599 Elf_Internal_Rela *relstart, *rel, *relend;
7600 Elf_Internal_Shdr *symtab_hdr;
7601 Elf_Internal_Sym *local_syms;
7603 struct _opd_sec_data *opd;
7604 bfd_boolean need_edit, add_aux_fields;
7605 bfd_size_type cnt_16b = 0;
7607 if (!is_ppc64_elf (ibfd))
7610 sec = bfd_get_section_by_name (ibfd, ".opd");
7611 if (sec == NULL || sec->size == 0)
7614 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7617 if (sec->output_section == bfd_abs_section_ptr)
7620 /* Look through the section relocs. */
7621 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7625 symtab_hdr = &elf_symtab_hdr (ibfd);
7627 /* Read the relocations. */
7628 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7630 if (relstart == NULL)
7633 /* First run through the relocs to check they are sane, and to
7634 determine whether we need to edit this opd section. */
7638 relend = relstart + sec->reloc_count;
7639 for (rel = relstart; rel < relend; )
7641 enum elf_ppc64_reloc_type r_type;
7642 unsigned long r_symndx;
7644 struct elf_link_hash_entry *h;
7645 Elf_Internal_Sym *sym;
7647 /* .opd contains a regular array of 16 or 24 byte entries. We're
7648 only interested in the reloc pointing to a function entry
7650 if (rel->r_offset != offset
7651 || rel + 1 >= relend
7652 || (rel + 1)->r_offset != offset + 8)
7654 /* If someone messes with .opd alignment then after a
7655 "ld -r" we might have padding in the middle of .opd.
7656 Also, there's nothing to prevent someone putting
7657 something silly in .opd with the assembler. No .opd
7658 optimization for them! */
7660 (*_bfd_error_handler)
7661 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7666 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7667 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7669 (*_bfd_error_handler)
7670 (_("%B: unexpected reloc type %u in .opd section"),
7676 r_symndx = ELF64_R_SYM (rel->r_info);
7677 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7681 if (sym_sec == NULL || sym_sec->owner == NULL)
7683 const char *sym_name;
7685 sym_name = h->root.root.string;
7687 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7690 (*_bfd_error_handler)
7691 (_("%B: undefined sym `%s' in .opd section"),
7697 /* opd entries are always for functions defined in the
7698 current input bfd. If the symbol isn't defined in the
7699 input bfd, then we won't be using the function in this
7700 bfd; It must be defined in a linkonce section in another
7701 bfd, or is weak. It's also possible that we are
7702 discarding the function due to a linker script /DISCARD/,
7703 which we test for via the output_section. */
7704 if (sym_sec->owner != ibfd
7705 || sym_sec->output_section == bfd_abs_section_ptr)
7710 || (rel + 1 == relend && rel->r_offset == offset + 16))
7712 if (sec->size == offset + 24)
7717 if (rel == relend && sec->size == offset + 16)
7725 if (rel->r_offset == offset + 24)
7727 else if (rel->r_offset != offset + 16)
7729 else if (rel + 1 < relend
7730 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7731 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7736 else if (rel + 2 < relend
7737 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7738 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7747 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7749 if (need_edit || add_aux_fields)
7751 Elf_Internal_Rela *write_rel;
7752 Elf_Internal_Shdr *rel_hdr;
7753 bfd_byte *rptr, *wptr;
7754 bfd_byte *new_contents;
7759 new_contents = NULL;
7760 amt = sec->size * sizeof (long) / 8;
7761 opd = &ppc64_elf_section_data (sec)->u.opd;
7762 opd->adjust = bfd_zalloc (sec->owner, amt);
7763 if (opd->adjust == NULL)
7765 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7767 /* This seems a waste of time as input .opd sections are all
7768 zeros as generated by gcc, but I suppose there's no reason
7769 this will always be so. We might start putting something in
7770 the third word of .opd entries. */
7771 if ((sec->flags & SEC_IN_MEMORY) == 0)
7774 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7779 if (local_syms != NULL
7780 && symtab_hdr->contents != (unsigned char *) local_syms)
7782 if (elf_section_data (sec)->relocs != relstart)
7786 sec->contents = loc;
7787 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7790 elf_section_data (sec)->relocs = relstart;
7792 new_contents = sec->contents;
7795 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7796 if (new_contents == NULL)
7800 wptr = new_contents;
7801 rptr = sec->contents;
7803 write_rel = relstart;
7807 for (rel = relstart; rel < relend; rel++)
7809 unsigned long r_symndx;
7811 struct elf_link_hash_entry *h;
7812 Elf_Internal_Sym *sym;
7814 r_symndx = ELF64_R_SYM (rel->r_info);
7815 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7819 if (rel->r_offset == offset)
7821 struct ppc_link_hash_entry *fdh = NULL;
7823 /* See if the .opd entry is full 24 byte or
7824 16 byte (with fd_aux entry overlapped with next
7827 if ((rel + 2 == relend && sec->size == offset + 16)
7828 || (rel + 3 < relend
7829 && rel[2].r_offset == offset + 16
7830 && rel[3].r_offset == offset + 24
7831 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7832 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7836 && h->root.root.string[0] == '.')
7838 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7840 && fdh->elf.root.type != bfd_link_hash_defined
7841 && fdh->elf.root.type != bfd_link_hash_defweak)
7845 skip = (sym_sec->owner != ibfd
7846 || sym_sec->output_section == bfd_abs_section_ptr);
7849 if (fdh != NULL && sym_sec->owner == ibfd)
7851 /* Arrange for the function descriptor sym
7853 fdh->elf.root.u.def.value = 0;
7854 fdh->elf.root.u.def.section = sym_sec;
7856 opd->adjust[rel->r_offset / 8] = -1;
7860 /* We'll be keeping this opd entry. */
7864 /* Redefine the function descriptor symbol to
7865 this location in the opd section. It is
7866 necessary to update the value here rather
7867 than using an array of adjustments as we do
7868 for local symbols, because various places
7869 in the generic ELF code use the value
7870 stored in u.def.value. */
7871 fdh->elf.root.u.def.value = wptr - new_contents;
7872 fdh->adjust_done = 1;
7875 /* Local syms are a bit tricky. We could
7876 tweak them as they can be cached, but
7877 we'd need to look through the local syms
7878 for the function descriptor sym which we
7879 don't have at the moment. So keep an
7880 array of adjustments. */
7881 opd->adjust[rel->r_offset / 8]
7882 = (wptr - new_contents) - (rptr - sec->contents);
7885 memcpy (wptr, rptr, opd_ent_size);
7886 wptr += opd_ent_size;
7887 if (add_aux_fields && opd_ent_size == 16)
7889 memset (wptr, '\0', 8);
7893 rptr += opd_ent_size;
7894 offset += opd_ent_size;
7900 && !info->relocatable
7901 && !dec_dynrel_count (rel->r_info, sec, info,
7907 /* We need to adjust any reloc offsets to point to the
7908 new opd entries. While we're at it, we may as well
7909 remove redundant relocs. */
7910 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7911 if (write_rel != rel)
7912 memcpy (write_rel, rel, sizeof (*rel));
7917 sec->size = wptr - new_contents;
7918 sec->reloc_count = write_rel - relstart;
7921 free (sec->contents);
7922 sec->contents = new_contents;
7925 /* Fudge the header size too, as this is used later in
7926 elf_bfd_final_link if we are emitting relocs. */
7927 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7928 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7931 else if (elf_section_data (sec)->relocs != relstart)
7934 if (local_syms != NULL
7935 && symtab_hdr->contents != (unsigned char *) local_syms)
7937 if (!info->keep_memory)
7940 symtab_hdr->contents = (unsigned char *) local_syms;
7945 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7947 /* If we are doing a final link and the last .opd entry is just 16 byte
7948 long, add a 8 byte padding after it. */
7949 if (need_pad != NULL && !info->relocatable)
7953 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7955 BFD_ASSERT (need_pad->size > 0);
7957 p = bfd_malloc (need_pad->size + 8);
7961 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7962 p, 0, need_pad->size))
7965 need_pad->contents = p;
7966 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7970 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7974 need_pad->contents = p;
7977 memset (need_pad->contents + need_pad->size, 0, 8);
7978 need_pad->size += 8;
7984 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7987 ppc64_elf_tls_setup (struct bfd_link_info *info)
7989 struct ppc_link_hash_table *htab;
7991 htab = ppc_hash_table (info);
7995 if (abiversion (info->output_bfd) == 1)
7998 if (htab->params->no_multi_toc)
7999 htab->do_multi_toc = 0;
8000 else if (!htab->do_multi_toc)
8001 htab->params->no_multi_toc = 1;
8003 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8004 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8005 FALSE, FALSE, TRUE));
8006 /* Move dynamic linking info to the function descriptor sym. */
8007 if (htab->tls_get_addr != NULL)
8008 func_desc_adjust (&htab->tls_get_addr->elf, info);
8009 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8010 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8011 FALSE, FALSE, TRUE));
8012 if (!htab->params->no_tls_get_addr_opt)
8014 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8016 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8017 FALSE, FALSE, TRUE);
8019 func_desc_adjust (opt, info);
8020 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8021 FALSE, FALSE, TRUE);
8023 && (opt_fd->root.type == bfd_link_hash_defined
8024 || opt_fd->root.type == bfd_link_hash_defweak))
8026 /* If glibc supports an optimized __tls_get_addr call stub,
8027 signalled by the presence of __tls_get_addr_opt, and we'll
8028 be calling __tls_get_addr via a plt call stub, then
8029 make __tls_get_addr point to __tls_get_addr_opt. */
8030 tga_fd = &htab->tls_get_addr_fd->elf;
8031 if (htab->elf.dynamic_sections_created
8033 && (tga_fd->type == STT_FUNC
8034 || tga_fd->needs_plt)
8035 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8036 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8037 && tga_fd->root.type == bfd_link_hash_undefweak)))
8039 struct plt_entry *ent;
8041 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8042 if (ent->plt.refcount > 0)
8046 tga_fd->root.type = bfd_link_hash_indirect;
8047 tga_fd->root.u.i.link = &opt_fd->root;
8048 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8049 if (opt_fd->dynindx != -1)
8051 /* Use __tls_get_addr_opt in dynamic relocations. */
8052 opt_fd->dynindx = -1;
8053 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8054 opt_fd->dynstr_index);
8055 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8058 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8059 tga = &htab->tls_get_addr->elf;
8060 if (opt != NULL && tga != NULL)
8062 tga->root.type = bfd_link_hash_indirect;
8063 tga->root.u.i.link = &opt->root;
8064 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8065 _bfd_elf_link_hash_hide_symbol (info, opt,
8067 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8069 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8070 htab->tls_get_addr_fd->is_func_descriptor = 1;
8071 if (htab->tls_get_addr != NULL)
8073 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8074 htab->tls_get_addr->is_func = 1;
8080 htab->params->no_tls_get_addr_opt = TRUE;
8082 return _bfd_elf_tls_setup (info->output_bfd, info);
8085 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8089 branch_reloc_hash_match (const bfd *ibfd,
8090 const Elf_Internal_Rela *rel,
8091 const struct ppc_link_hash_entry *hash1,
8092 const struct ppc_link_hash_entry *hash2)
8094 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8095 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8096 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8098 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8100 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8101 struct elf_link_hash_entry *h;
8103 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8104 h = elf_follow_link (h);
8105 if (h == &hash1->elf || h == &hash2->elf)
8111 /* Run through all the TLS relocs looking for optimization
8112 opportunities. The linker has been hacked (see ppc64elf.em) to do
8113 a preliminary section layout so that we know the TLS segment
8114 offsets. We can't optimize earlier because some optimizations need
8115 to know the tp offset, and we need to optimize before allocating
8116 dynamic relocations. */
8119 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8123 struct ppc_link_hash_table *htab;
8124 unsigned char *toc_ref;
8127 if (info->relocatable || !info->executable)
8130 htab = ppc_hash_table (info);
8134 /* Make two passes over the relocs. On the first pass, mark toc
8135 entries involved with tls relocs, and check that tls relocs
8136 involved in setting up a tls_get_addr call are indeed followed by
8137 such a call. If they are not, we can't do any tls optimization.
8138 On the second pass twiddle tls_mask flags to notify
8139 relocate_section that optimization can be done, and adjust got
8140 and plt refcounts. */
8142 for (pass = 0; pass < 2; ++pass)
8143 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8145 Elf_Internal_Sym *locsyms = NULL;
8146 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8148 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8149 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8151 Elf_Internal_Rela *relstart, *rel, *relend;
8152 bfd_boolean found_tls_get_addr_arg = 0;
8154 /* Read the relocations. */
8155 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8157 if (relstart == NULL)
8163 relend = relstart + sec->reloc_count;
8164 for (rel = relstart; rel < relend; rel++)
8166 enum elf_ppc64_reloc_type r_type;
8167 unsigned long r_symndx;
8168 struct elf_link_hash_entry *h;
8169 Elf_Internal_Sym *sym;
8171 unsigned char *tls_mask;
8172 unsigned char tls_set, tls_clear, tls_type = 0;
8174 bfd_boolean ok_tprel, is_local;
8175 long toc_ref_index = 0;
8176 int expecting_tls_get_addr = 0;
8177 bfd_boolean ret = FALSE;
8179 r_symndx = ELF64_R_SYM (rel->r_info);
8180 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8184 if (elf_section_data (sec)->relocs != relstart)
8186 if (toc_ref != NULL)
8189 && (elf_symtab_hdr (ibfd).contents
8190 != (unsigned char *) locsyms))
8197 if (h->root.type == bfd_link_hash_defined
8198 || h->root.type == bfd_link_hash_defweak)
8199 value = h->root.u.def.value;
8200 else if (h->root.type == bfd_link_hash_undefweak)
8204 found_tls_get_addr_arg = 0;
8209 /* Symbols referenced by TLS relocs must be of type
8210 STT_TLS. So no need for .opd local sym adjust. */
8211 value = sym->st_value;
8220 && h->root.type == bfd_link_hash_undefweak)
8224 value += sym_sec->output_offset;
8225 value += sym_sec->output_section->vma;
8226 value -= htab->elf.tls_sec->vma;
8227 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8228 < (bfd_vma) 1 << 32);
8232 r_type = ELF64_R_TYPE (rel->r_info);
8233 /* If this section has old-style __tls_get_addr calls
8234 without marker relocs, then check that each
8235 __tls_get_addr call reloc is preceded by a reloc
8236 that conceivably belongs to the __tls_get_addr arg
8237 setup insn. If we don't find matching arg setup
8238 relocs, don't do any tls optimization. */
8240 && sec->has_tls_get_addr_call
8242 && (h == &htab->tls_get_addr->elf
8243 || h == &htab->tls_get_addr_fd->elf)
8244 && !found_tls_get_addr_arg
8245 && is_branch_reloc (r_type))
8247 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8248 "TLS optimization disabled\n"),
8249 ibfd, sec, rel->r_offset);
8254 found_tls_get_addr_arg = 0;
8257 case R_PPC64_GOT_TLSLD16:
8258 case R_PPC64_GOT_TLSLD16_LO:
8259 expecting_tls_get_addr = 1;
8260 found_tls_get_addr_arg = 1;
8263 case R_PPC64_GOT_TLSLD16_HI:
8264 case R_PPC64_GOT_TLSLD16_HA:
8265 /* These relocs should never be against a symbol
8266 defined in a shared lib. Leave them alone if
8267 that turns out to be the case. */
8274 tls_type = TLS_TLS | TLS_LD;
8277 case R_PPC64_GOT_TLSGD16:
8278 case R_PPC64_GOT_TLSGD16_LO:
8279 expecting_tls_get_addr = 1;
8280 found_tls_get_addr_arg = 1;
8283 case R_PPC64_GOT_TLSGD16_HI:
8284 case R_PPC64_GOT_TLSGD16_HA:
8290 tls_set = TLS_TLS | TLS_TPRELGD;
8292 tls_type = TLS_TLS | TLS_GD;
8295 case R_PPC64_GOT_TPREL16_DS:
8296 case R_PPC64_GOT_TPREL16_LO_DS:
8297 case R_PPC64_GOT_TPREL16_HI:
8298 case R_PPC64_GOT_TPREL16_HA:
8303 tls_clear = TLS_TPREL;
8304 tls_type = TLS_TLS | TLS_TPREL;
8311 found_tls_get_addr_arg = 1;
8316 case R_PPC64_TOC16_LO:
8317 if (sym_sec == NULL || sym_sec != toc)
8320 /* Mark this toc entry as referenced by a TLS
8321 code sequence. We can do that now in the
8322 case of R_PPC64_TLS, and after checking for
8323 tls_get_addr for the TOC16 relocs. */
8324 if (toc_ref == NULL)
8325 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8326 if (toc_ref == NULL)
8330 value = h->root.u.def.value;
8332 value = sym->st_value;
8333 value += rel->r_addend;
8334 BFD_ASSERT (value < toc->size && value % 8 == 0);
8335 toc_ref_index = (value + toc->output_offset) / 8;
8336 if (r_type == R_PPC64_TLS
8337 || r_type == R_PPC64_TLSGD
8338 || r_type == R_PPC64_TLSLD)
8340 toc_ref[toc_ref_index] = 1;
8344 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8349 expecting_tls_get_addr = 2;
8352 case R_PPC64_TPREL64:
8356 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8361 tls_set = TLS_EXPLICIT;
8362 tls_clear = TLS_TPREL;
8367 case R_PPC64_DTPMOD64:
8371 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8373 if (rel + 1 < relend
8375 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8376 && rel[1].r_offset == rel->r_offset + 8)
8380 tls_set = TLS_EXPLICIT | TLS_GD;
8383 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8392 tls_set = TLS_EXPLICIT;
8403 if (!expecting_tls_get_addr
8404 || !sec->has_tls_get_addr_call)
8407 if (rel + 1 < relend
8408 && branch_reloc_hash_match (ibfd, rel + 1,
8410 htab->tls_get_addr_fd))
8412 if (expecting_tls_get_addr == 2)
8414 /* Check for toc tls entries. */
8415 unsigned char *toc_tls;
8418 retval = get_tls_mask (&toc_tls, NULL, NULL,
8423 if (toc_tls != NULL)
8425 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8426 found_tls_get_addr_arg = 1;
8428 toc_ref[toc_ref_index] = 1;
8434 if (expecting_tls_get_addr != 1)
8437 /* Uh oh, we didn't find the expected call. We
8438 could just mark this symbol to exclude it
8439 from tls optimization but it's safer to skip
8440 the entire optimization. */
8441 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8442 "TLS optimization disabled\n"),
8443 ibfd, sec, rel->r_offset);
8448 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8450 struct plt_entry *ent;
8451 for (ent = htab->tls_get_addr->elf.plt.plist;
8454 if (ent->addend == 0)
8456 if (ent->plt.refcount > 0)
8458 ent->plt.refcount -= 1;
8459 expecting_tls_get_addr = 0;
8465 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8467 struct plt_entry *ent;
8468 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8471 if (ent->addend == 0)
8473 if (ent->plt.refcount > 0)
8474 ent->plt.refcount -= 1;
8482 if ((tls_set & TLS_EXPLICIT) == 0)
8484 struct got_entry *ent;
8486 /* Adjust got entry for this reloc. */
8490 ent = elf_local_got_ents (ibfd)[r_symndx];
8492 for (; ent != NULL; ent = ent->next)
8493 if (ent->addend == rel->r_addend
8494 && ent->owner == ibfd
8495 && ent->tls_type == tls_type)
8502 /* We managed to get rid of a got entry. */
8503 if (ent->got.refcount > 0)
8504 ent->got.refcount -= 1;
8509 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8510 we'll lose one or two dyn relocs. */
8511 if (!dec_dynrel_count (rel->r_info, sec, info,
8515 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8517 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8523 *tls_mask |= tls_set;
8524 *tls_mask &= ~tls_clear;
8527 if (elf_section_data (sec)->relocs != relstart)
8532 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8534 if (!info->keep_memory)
8537 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8541 if (toc_ref != NULL)
8546 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8547 the values of any global symbols in a toc section that has been
8548 edited. Globals in toc sections should be a rarity, so this function
8549 sets a flag if any are found in toc sections other than the one just
8550 edited, so that futher hash table traversals can be avoided. */
8552 struct adjust_toc_info
8555 unsigned long *skip;
8556 bfd_boolean global_toc_syms;
8559 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8562 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8564 struct ppc_link_hash_entry *eh;
8565 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8568 if (h->root.type != bfd_link_hash_defined
8569 && h->root.type != bfd_link_hash_defweak)
8572 eh = (struct ppc_link_hash_entry *) h;
8573 if (eh->adjust_done)
8576 if (eh->elf.root.u.def.section == toc_inf->toc)
8578 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8579 i = toc_inf->toc->rawsize >> 3;
8581 i = eh->elf.root.u.def.value >> 3;
8583 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8585 (*_bfd_error_handler)
8586 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8589 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8590 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8593 eh->elf.root.u.def.value -= toc_inf->skip[i];
8594 eh->adjust_done = 1;
8596 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8597 toc_inf->global_toc_syms = TRUE;
8602 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8605 ok_lo_toc_insn (unsigned int insn)
8607 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8608 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8609 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8610 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8611 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8612 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8613 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8614 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8615 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8616 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8617 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8618 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8619 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8620 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8621 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8623 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8624 && ((insn & 3) == 0 || (insn & 3) == 3))
8625 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8628 /* Examine all relocs referencing .toc sections in order to remove
8629 unused .toc entries. */
8632 ppc64_elf_edit_toc (struct bfd_link_info *info)
8635 struct adjust_toc_info toc_inf;
8636 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8638 htab->do_toc_opt = 1;
8639 toc_inf.global_toc_syms = TRUE;
8640 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8642 asection *toc, *sec;
8643 Elf_Internal_Shdr *symtab_hdr;
8644 Elf_Internal_Sym *local_syms;
8645 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8646 unsigned long *skip, *drop;
8647 unsigned char *used;
8648 unsigned char *keep, last, some_unused;
8650 if (!is_ppc64_elf (ibfd))
8653 toc = bfd_get_section_by_name (ibfd, ".toc");
8656 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8657 || discarded_section (toc))
8662 symtab_hdr = &elf_symtab_hdr (ibfd);
8664 /* Look at sections dropped from the final link. */
8667 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8669 if (sec->reloc_count == 0
8670 || !discarded_section (sec)
8671 || get_opd_info (sec)
8672 || (sec->flags & SEC_ALLOC) == 0
8673 || (sec->flags & SEC_DEBUGGING) != 0)
8676 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8677 if (relstart == NULL)
8680 /* Run through the relocs to see which toc entries might be
8682 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8684 enum elf_ppc64_reloc_type r_type;
8685 unsigned long r_symndx;
8687 struct elf_link_hash_entry *h;
8688 Elf_Internal_Sym *sym;
8691 r_type = ELF64_R_TYPE (rel->r_info);
8698 case R_PPC64_TOC16_LO:
8699 case R_PPC64_TOC16_HI:
8700 case R_PPC64_TOC16_HA:
8701 case R_PPC64_TOC16_DS:
8702 case R_PPC64_TOC16_LO_DS:
8706 r_symndx = ELF64_R_SYM (rel->r_info);
8707 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8715 val = h->root.u.def.value;
8717 val = sym->st_value;
8718 val += rel->r_addend;
8720 if (val >= toc->size)
8723 /* Anything in the toc ought to be aligned to 8 bytes.
8724 If not, don't mark as unused. */
8730 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8735 skip[val >> 3] = ref_from_discarded;
8738 if (elf_section_data (sec)->relocs != relstart)
8742 /* For largetoc loads of address constants, we can convert
8743 . addis rx,2,addr@got@ha
8744 . ld ry,addr@got@l(rx)
8746 . addis rx,2,addr@toc@ha
8747 . addi ry,rx,addr@toc@l
8748 when addr is within 2G of the toc pointer. This then means
8749 that the word storing "addr" in the toc is no longer needed. */
8751 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8752 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8753 && toc->reloc_count != 0)
8755 /* Read toc relocs. */
8756 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8758 if (toc_relocs == NULL)
8761 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8763 enum elf_ppc64_reloc_type r_type;
8764 unsigned long r_symndx;
8766 struct elf_link_hash_entry *h;
8767 Elf_Internal_Sym *sym;
8770 r_type = ELF64_R_TYPE (rel->r_info);
8771 if (r_type != R_PPC64_ADDR64)
8774 r_symndx = ELF64_R_SYM (rel->r_info);
8775 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8780 || discarded_section (sym_sec))
8783 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8788 if (h->type == STT_GNU_IFUNC)
8790 val = h->root.u.def.value;
8794 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8796 val = sym->st_value;
8798 val += rel->r_addend;
8799 val += sym_sec->output_section->vma + sym_sec->output_offset;
8801 /* We don't yet know the exact toc pointer value, but we
8802 know it will be somewhere in the toc section. Don't
8803 optimize if the difference from any possible toc
8804 pointer is outside [ff..f80008000, 7fff7fff]. */
8805 addr = toc->output_section->vma + TOC_BASE_OFF;
8806 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8809 addr = toc->output_section->vma + toc->output_section->rawsize;
8810 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8815 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8820 skip[rel->r_offset >> 3]
8821 |= can_optimize | ((rel - toc_relocs) << 2);
8828 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8832 if (local_syms != NULL
8833 && symtab_hdr->contents != (unsigned char *) local_syms)
8837 && elf_section_data (sec)->relocs != relstart)
8839 if (toc_relocs != NULL
8840 && elf_section_data (toc)->relocs != toc_relocs)
8847 /* Now check all kept sections that might reference the toc.
8848 Check the toc itself last. */
8849 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8852 sec = (sec == toc ? NULL
8853 : sec->next == NULL ? toc
8854 : sec->next == toc && toc->next ? toc->next
8859 if (sec->reloc_count == 0
8860 || discarded_section (sec)
8861 || get_opd_info (sec)
8862 || (sec->flags & SEC_ALLOC) == 0
8863 || (sec->flags & SEC_DEBUGGING) != 0)
8866 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8868 if (relstart == NULL)
8874 /* Mark toc entries referenced as used. */
8878 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8880 enum elf_ppc64_reloc_type r_type;
8881 unsigned long r_symndx;
8883 struct elf_link_hash_entry *h;
8884 Elf_Internal_Sym *sym;
8886 enum {no_check, check_lo, check_ha} insn_check;
8888 r_type = ELF64_R_TYPE (rel->r_info);
8892 insn_check = no_check;
8895 case R_PPC64_GOT_TLSLD16_HA:
8896 case R_PPC64_GOT_TLSGD16_HA:
8897 case R_PPC64_GOT_TPREL16_HA:
8898 case R_PPC64_GOT_DTPREL16_HA:
8899 case R_PPC64_GOT16_HA:
8900 case R_PPC64_TOC16_HA:
8901 insn_check = check_ha;
8904 case R_PPC64_GOT_TLSLD16_LO:
8905 case R_PPC64_GOT_TLSGD16_LO:
8906 case R_PPC64_GOT_TPREL16_LO_DS:
8907 case R_PPC64_GOT_DTPREL16_LO_DS:
8908 case R_PPC64_GOT16_LO:
8909 case R_PPC64_GOT16_LO_DS:
8910 case R_PPC64_TOC16_LO:
8911 case R_PPC64_TOC16_LO_DS:
8912 insn_check = check_lo;
8916 if (insn_check != no_check)
8918 bfd_vma off = rel->r_offset & ~3;
8919 unsigned char buf[4];
8922 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8927 insn = bfd_get_32 (ibfd, buf);
8928 if (insn_check == check_lo
8929 ? !ok_lo_toc_insn (insn)
8930 : ((insn & ((0x3f << 26) | 0x1f << 16))
8931 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8935 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8936 sprintf (str, "%#08x", insn);
8937 info->callbacks->einfo
8938 (_("%P: %H: toc optimization is not supported for"
8939 " %s instruction.\n"),
8940 ibfd, sec, rel->r_offset & ~3, str);
8947 case R_PPC64_TOC16_LO:
8948 case R_PPC64_TOC16_HI:
8949 case R_PPC64_TOC16_HA:
8950 case R_PPC64_TOC16_DS:
8951 case R_PPC64_TOC16_LO_DS:
8952 /* In case we're taking addresses of toc entries. */
8953 case R_PPC64_ADDR64:
8960 r_symndx = ELF64_R_SYM (rel->r_info);
8961 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8972 val = h->root.u.def.value;
8974 val = sym->st_value;
8975 val += rel->r_addend;
8977 if (val >= toc->size)
8980 if ((skip[val >> 3] & can_optimize) != 0)
8987 case R_PPC64_TOC16_HA:
8990 case R_PPC64_TOC16_LO_DS:
8991 off = rel->r_offset;
8992 off += (bfd_big_endian (ibfd) ? -2 : 3);
8993 if (!bfd_get_section_contents (ibfd, sec, &opc,
8999 if ((opc & (0x3f << 2)) == (58u << 2))
9004 /* Wrong sort of reloc, or not a ld. We may
9005 as well clear ref_from_discarded too. */
9012 /* For the toc section, we only mark as used if this
9013 entry itself isn't unused. */
9014 else if ((used[rel->r_offset >> 3]
9015 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9018 /* Do all the relocs again, to catch reference
9027 if (elf_section_data (sec)->relocs != relstart)
9031 /* Merge the used and skip arrays. Assume that TOC
9032 doublewords not appearing as either used or unused belong
9033 to to an entry more than one doubleword in size. */
9034 for (drop = skip, keep = used, last = 0, some_unused = 0;
9035 drop < skip + (toc->size + 7) / 8;
9040 *drop &= ~ref_from_discarded;
9041 if ((*drop & can_optimize) != 0)
9045 else if ((*drop & ref_from_discarded) != 0)
9048 last = ref_from_discarded;
9058 bfd_byte *contents, *src;
9060 Elf_Internal_Sym *sym;
9061 bfd_boolean local_toc_syms = FALSE;
9063 /* Shuffle the toc contents, and at the same time convert the
9064 skip array from booleans into offsets. */
9065 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9068 elf_section_data (toc)->this_hdr.contents = contents;
9070 for (src = contents, off = 0, drop = skip;
9071 src < contents + toc->size;
9074 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9079 memcpy (src - off, src, 8);
9083 toc->rawsize = toc->size;
9084 toc->size = src - contents - off;
9086 /* Adjust addends for relocs against the toc section sym,
9087 and optimize any accesses we can. */
9088 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9090 if (sec->reloc_count == 0
9091 || discarded_section (sec))
9094 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9096 if (relstart == NULL)
9099 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9101 enum elf_ppc64_reloc_type r_type;
9102 unsigned long r_symndx;
9104 struct elf_link_hash_entry *h;
9107 r_type = ELF64_R_TYPE (rel->r_info);
9114 case R_PPC64_TOC16_LO:
9115 case R_PPC64_TOC16_HI:
9116 case R_PPC64_TOC16_HA:
9117 case R_PPC64_TOC16_DS:
9118 case R_PPC64_TOC16_LO_DS:
9119 case R_PPC64_ADDR64:
9123 r_symndx = ELF64_R_SYM (rel->r_info);
9124 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9132 val = h->root.u.def.value;
9135 val = sym->st_value;
9137 local_toc_syms = TRUE;
9140 val += rel->r_addend;
9142 if (val > toc->rawsize)
9144 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9146 else if ((skip[val >> 3] & can_optimize) != 0)
9148 Elf_Internal_Rela *tocrel
9149 = toc_relocs + (skip[val >> 3] >> 2);
9150 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9154 case R_PPC64_TOC16_HA:
9155 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9158 case R_PPC64_TOC16_LO_DS:
9159 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9163 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9165 info->callbacks->einfo
9166 (_("%P: %H: %s references "
9167 "optimized away TOC entry\n"),
9168 ibfd, sec, rel->r_offset,
9169 ppc64_elf_howto_table[r_type]->name);
9170 bfd_set_error (bfd_error_bad_value);
9173 rel->r_addend = tocrel->r_addend;
9174 elf_section_data (sec)->relocs = relstart;
9178 if (h != NULL || sym->st_value != 0)
9181 rel->r_addend -= skip[val >> 3];
9182 elf_section_data (sec)->relocs = relstart;
9185 if (elf_section_data (sec)->relocs != relstart)
9189 /* We shouldn't have local or global symbols defined in the TOC,
9190 but handle them anyway. */
9191 if (local_syms != NULL)
9192 for (sym = local_syms;
9193 sym < local_syms + symtab_hdr->sh_info;
9195 if (sym->st_value != 0
9196 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9200 if (sym->st_value > toc->rawsize)
9201 i = toc->rawsize >> 3;
9203 i = sym->st_value >> 3;
9205 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9208 (*_bfd_error_handler)
9209 (_("%s defined on removed toc entry"),
9210 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9213 while ((skip[i] & (ref_from_discarded | can_optimize)));
9214 sym->st_value = (bfd_vma) i << 3;
9217 sym->st_value -= skip[i];
9218 symtab_hdr->contents = (unsigned char *) local_syms;
9221 /* Adjust any global syms defined in this toc input section. */
9222 if (toc_inf.global_toc_syms)
9225 toc_inf.skip = skip;
9226 toc_inf.global_toc_syms = FALSE;
9227 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9231 if (toc->reloc_count != 0)
9233 Elf_Internal_Shdr *rel_hdr;
9234 Elf_Internal_Rela *wrel;
9237 /* Remove unused toc relocs, and adjust those we keep. */
9238 if (toc_relocs == NULL)
9239 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9241 if (toc_relocs == NULL)
9245 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9246 if ((skip[rel->r_offset >> 3]
9247 & (ref_from_discarded | can_optimize)) == 0)
9249 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9250 wrel->r_info = rel->r_info;
9251 wrel->r_addend = rel->r_addend;
9254 else if (!dec_dynrel_count (rel->r_info, toc, info,
9255 &local_syms, NULL, NULL))
9258 elf_section_data (toc)->relocs = toc_relocs;
9259 toc->reloc_count = wrel - toc_relocs;
9260 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9261 sz = rel_hdr->sh_entsize;
9262 rel_hdr->sh_size = toc->reloc_count * sz;
9265 else if (toc_relocs != NULL
9266 && elf_section_data (toc)->relocs != toc_relocs)
9269 if (local_syms != NULL
9270 && symtab_hdr->contents != (unsigned char *) local_syms)
9272 if (!info->keep_memory)
9275 symtab_hdr->contents = (unsigned char *) local_syms;
9283 /* Return true iff input section I references the TOC using
9284 instructions limited to +/-32k offsets. */
9287 ppc64_elf_has_small_toc_reloc (asection *i)
9289 return (is_ppc64_elf (i->owner)
9290 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9293 /* Allocate space for one GOT entry. */
9296 allocate_got (struct elf_link_hash_entry *h,
9297 struct bfd_link_info *info,
9298 struct got_entry *gent)
9300 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9302 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9303 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9305 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9306 ? 2 : 1) * sizeof (Elf64_External_Rela);
9307 asection *got = ppc64_elf_tdata (gent->owner)->got;
9309 gent->got.offset = got->size;
9310 got->size += entsize;
9312 dyn = htab->elf.dynamic_sections_created;
9313 if (h->type == STT_GNU_IFUNC)
9315 htab->elf.irelplt->size += rentsize;
9316 htab->got_reli_size += rentsize;
9318 else if ((info->shared
9319 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9320 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9321 || h->root.type != bfd_link_hash_undefweak))
9323 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9324 relgot->size += rentsize;
9328 /* This function merges got entries in the same toc group. */
9331 merge_got_entries (struct got_entry **pent)
9333 struct got_entry *ent, *ent2;
9335 for (ent = *pent; ent != NULL; ent = ent->next)
9336 if (!ent->is_indirect)
9337 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9338 if (!ent2->is_indirect
9339 && ent2->addend == ent->addend
9340 && ent2->tls_type == ent->tls_type
9341 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9343 ent2->is_indirect = TRUE;
9344 ent2->got.ent = ent;
9348 /* Allocate space in .plt, .got and associated reloc sections for
9352 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9354 struct bfd_link_info *info;
9355 struct ppc_link_hash_table *htab;
9357 struct ppc_link_hash_entry *eh;
9358 struct elf_dyn_relocs *p;
9359 struct got_entry **pgent, *gent;
9361 if (h->root.type == bfd_link_hash_indirect)
9364 info = (struct bfd_link_info *) inf;
9365 htab = ppc_hash_table (info);
9369 if ((htab->elf.dynamic_sections_created
9371 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9372 || h->type == STT_GNU_IFUNC)
9374 struct plt_entry *pent;
9375 bfd_boolean doneone = FALSE;
9376 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9377 if (pent->plt.refcount > 0)
9379 if (!htab->elf.dynamic_sections_created
9380 || h->dynindx == -1)
9383 pent->plt.offset = s->size;
9384 s->size += PLT_ENTRY_SIZE (htab);
9385 s = htab->elf.irelplt;
9389 /* If this is the first .plt entry, make room for the special
9393 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9395 pent->plt.offset = s->size;
9397 /* Make room for this entry. */
9398 s->size += PLT_ENTRY_SIZE (htab);
9400 /* Make room for the .glink code. */
9403 s->size += GLINK_CALL_STUB_SIZE;
9406 /* We need bigger stubs past index 32767. */
9407 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9414 /* We also need to make an entry in the .rela.plt section. */
9415 s = htab->elf.srelplt;
9417 s->size += sizeof (Elf64_External_Rela);
9421 pent->plt.offset = (bfd_vma) -1;
9424 h->plt.plist = NULL;
9430 h->plt.plist = NULL;
9434 eh = (struct ppc_link_hash_entry *) h;
9435 /* Run through the TLS GD got entries first if we're changing them
9437 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9438 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9439 if (gent->got.refcount > 0
9440 && (gent->tls_type & TLS_GD) != 0)
9442 /* This was a GD entry that has been converted to TPREL. If
9443 there happens to be a TPREL entry we can use that one. */
9444 struct got_entry *ent;
9445 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9446 if (ent->got.refcount > 0
9447 && (ent->tls_type & TLS_TPREL) != 0
9448 && ent->addend == gent->addend
9449 && ent->owner == gent->owner)
9451 gent->got.refcount = 0;
9455 /* If not, then we'll be using our own TPREL entry. */
9456 if (gent->got.refcount != 0)
9457 gent->tls_type = TLS_TLS | TLS_TPREL;
9460 /* Remove any list entry that won't generate a word in the GOT before
9461 we call merge_got_entries. Otherwise we risk merging to empty
9463 pgent = &h->got.glist;
9464 while ((gent = *pgent) != NULL)
9465 if (gent->got.refcount > 0)
9467 if ((gent->tls_type & TLS_LD) != 0
9470 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9471 *pgent = gent->next;
9474 pgent = &gent->next;
9477 *pgent = gent->next;
9479 if (!htab->do_multi_toc)
9480 merge_got_entries (&h->got.glist);
9482 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9483 if (!gent->is_indirect)
9485 /* Make sure this symbol is output as a dynamic symbol.
9486 Undefined weak syms won't yet be marked as dynamic,
9487 nor will all TLS symbols. */
9488 if (h->dynindx == -1
9490 && h->type != STT_GNU_IFUNC
9491 && htab->elf.dynamic_sections_created)
9493 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9497 if (!is_ppc64_elf (gent->owner))
9500 allocate_got (h, info, gent);
9503 if (eh->dyn_relocs == NULL
9504 || (!htab->elf.dynamic_sections_created
9505 && h->type != STT_GNU_IFUNC))
9508 /* In the shared -Bsymbolic case, discard space allocated for
9509 dynamic pc-relative relocs against symbols which turn out to be
9510 defined in regular objects. For the normal shared case, discard
9511 space for relocs that have become local due to symbol visibility
9516 /* Relocs that use pc_count are those that appear on a call insn,
9517 or certain REL relocs (see must_be_dyn_reloc) that can be
9518 generated via assembly. We want calls to protected symbols to
9519 resolve directly to the function rather than going via the plt.
9520 If people want function pointer comparisons to work as expected
9521 then they should avoid writing weird assembly. */
9522 if (SYMBOL_CALLS_LOCAL (info, h))
9524 struct elf_dyn_relocs **pp;
9526 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9528 p->count -= p->pc_count;
9537 /* Also discard relocs on undefined weak syms with non-default
9539 if (eh->dyn_relocs != NULL
9540 && h->root.type == bfd_link_hash_undefweak)
9542 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9543 eh->dyn_relocs = NULL;
9545 /* Make sure this symbol is output as a dynamic symbol.
9546 Undefined weak syms won't yet be marked as dynamic. */
9547 else if (h->dynindx == -1
9548 && !h->forced_local)
9550 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9555 else if (h->type == STT_GNU_IFUNC)
9557 if (!h->non_got_ref)
9558 eh->dyn_relocs = NULL;
9560 else if (ELIMINATE_COPY_RELOCS)
9562 /* For the non-shared case, discard space for relocs against
9563 symbols which turn out to need copy relocs or are not
9569 /* Make sure this symbol is output as a dynamic symbol.
9570 Undefined weak syms won't yet be marked as dynamic. */
9571 if (h->dynindx == -1
9572 && !h->forced_local)
9574 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9578 /* If that succeeded, we know we'll be keeping all the
9580 if (h->dynindx != -1)
9584 eh->dyn_relocs = NULL;
9589 /* Finally, allocate space. */
9590 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9592 asection *sreloc = elf_section_data (p->sec)->sreloc;
9593 if (eh->elf.type == STT_GNU_IFUNC)
9594 sreloc = htab->elf.irelplt;
9595 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9601 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9602 to set up space for global entry stubs. These are put in glink,
9603 after the branch table. */
9606 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9608 struct bfd_link_info *info;
9609 struct ppc_link_hash_table *htab;
9610 struct plt_entry *pent;
9613 if (h->root.type == bfd_link_hash_indirect)
9616 if (!h->pointer_equality_needed)
9623 htab = ppc_hash_table (info);
9628 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9629 if (pent->plt.offset != (bfd_vma) -1
9630 && pent->addend == 0)
9632 /* For ELFv2, if this symbol is not defined in a regular file
9633 and we are not generating a shared library or pie, then we
9634 need to define the symbol in the executable on a call stub.
9635 This is to avoid text relocations. */
9636 s->size = (s->size + 15) & -16;
9637 h->root.u.def.section = s;
9638 h->root.u.def.value = s->size;
9645 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9646 read-only sections. */
9649 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9651 if (h->root.type == bfd_link_hash_indirect)
9654 if (readonly_dynrelocs (h))
9656 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9658 /* Not an error, just cut short the traversal. */
9664 /* Set the sizes of the dynamic sections. */
9667 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9668 struct bfd_link_info *info)
9670 struct ppc_link_hash_table *htab;
9675 struct got_entry *first_tlsld;
9677 htab = ppc_hash_table (info);
9681 dynobj = htab->elf.dynobj;
9685 if (htab->elf.dynamic_sections_created)
9687 /* Set the contents of the .interp section to the interpreter. */
9688 if (info->executable)
9690 s = bfd_get_linker_section (dynobj, ".interp");
9693 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9694 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9698 /* Set up .got offsets for local syms, and space for local dynamic
9700 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9702 struct got_entry **lgot_ents;
9703 struct got_entry **end_lgot_ents;
9704 struct plt_entry **local_plt;
9705 struct plt_entry **end_local_plt;
9706 unsigned char *lgot_masks;
9707 bfd_size_type locsymcount;
9708 Elf_Internal_Shdr *symtab_hdr;
9710 if (!is_ppc64_elf (ibfd))
9713 for (s = ibfd->sections; s != NULL; s = s->next)
9715 struct ppc_dyn_relocs *p;
9717 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9719 if (!bfd_is_abs_section (p->sec)
9720 && bfd_is_abs_section (p->sec->output_section))
9722 /* Input section has been discarded, either because
9723 it is a copy of a linkonce section or due to
9724 linker script /DISCARD/, so we'll be discarding
9727 else if (p->count != 0)
9729 asection *srel = elf_section_data (p->sec)->sreloc;
9731 srel = htab->elf.irelplt;
9732 srel->size += p->count * sizeof (Elf64_External_Rela);
9733 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9734 info->flags |= DF_TEXTREL;
9739 lgot_ents = elf_local_got_ents (ibfd);
9743 symtab_hdr = &elf_symtab_hdr (ibfd);
9744 locsymcount = symtab_hdr->sh_info;
9745 end_lgot_ents = lgot_ents + locsymcount;
9746 local_plt = (struct plt_entry **) end_lgot_ents;
9747 end_local_plt = local_plt + locsymcount;
9748 lgot_masks = (unsigned char *) end_local_plt;
9749 s = ppc64_elf_tdata (ibfd)->got;
9750 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9752 struct got_entry **pent, *ent;
9755 while ((ent = *pent) != NULL)
9756 if (ent->got.refcount > 0)
9758 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9760 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9765 unsigned int ent_size = 8;
9766 unsigned int rel_size = sizeof (Elf64_External_Rela);
9768 ent->got.offset = s->size;
9769 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9774 s->size += ent_size;
9775 if ((*lgot_masks & PLT_IFUNC) != 0)
9777 htab->elf.irelplt->size += rel_size;
9778 htab->got_reli_size += rel_size;
9780 else if (info->shared)
9782 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9783 srel->size += rel_size;
9792 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9793 for (; local_plt < end_local_plt; ++local_plt)
9795 struct plt_entry *ent;
9797 for (ent = *local_plt; ent != NULL; ent = ent->next)
9798 if (ent->plt.refcount > 0)
9801 ent->plt.offset = s->size;
9802 s->size += PLT_ENTRY_SIZE (htab);
9804 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9807 ent->plt.offset = (bfd_vma) -1;
9811 /* Allocate global sym .plt and .got entries, and space for global
9812 sym dynamic relocs. */
9813 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9814 /* Stash the end of glink branch table. */
9815 if (htab->glink != NULL)
9816 htab->glink->rawsize = htab->glink->size;
9818 if (!htab->opd_abi && !info->shared)
9819 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9822 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9824 struct got_entry *ent;
9826 if (!is_ppc64_elf (ibfd))
9829 ent = ppc64_tlsld_got (ibfd);
9830 if (ent->got.refcount > 0)
9832 if (!htab->do_multi_toc && first_tlsld != NULL)
9834 ent->is_indirect = TRUE;
9835 ent->got.ent = first_tlsld;
9839 if (first_tlsld == NULL)
9841 s = ppc64_elf_tdata (ibfd)->got;
9842 ent->got.offset = s->size;
9847 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9848 srel->size += sizeof (Elf64_External_Rela);
9853 ent->got.offset = (bfd_vma) -1;
9856 /* We now have determined the sizes of the various dynamic sections.
9857 Allocate memory for them. */
9859 for (s = dynobj->sections; s != NULL; s = s->next)
9861 if ((s->flags & SEC_LINKER_CREATED) == 0)
9864 if (s == htab->brlt || s == htab->relbrlt)
9865 /* These haven't been allocated yet; don't strip. */
9867 else if (s == htab->elf.sgot
9868 || s == htab->elf.splt
9869 || s == htab->elf.iplt
9871 || s == htab->dynbss)
9873 /* Strip this section if we don't need it; see the
9876 else if (s == htab->glink_eh_frame)
9878 if (!bfd_is_abs_section (s->output_section))
9879 /* Not sized yet. */
9882 else if (CONST_STRNEQ (s->name, ".rela"))
9886 if (s != htab->elf.srelplt)
9889 /* We use the reloc_count field as a counter if we need
9890 to copy relocs into the output file. */
9896 /* It's not one of our sections, so don't allocate space. */
9902 /* If we don't need this section, strip it from the
9903 output file. This is mostly to handle .rela.bss and
9904 .rela.plt. We must create both sections in
9905 create_dynamic_sections, because they must be created
9906 before the linker maps input sections to output
9907 sections. The linker does that before
9908 adjust_dynamic_symbol is called, and it is that
9909 function which decides whether anything needs to go
9910 into these sections. */
9911 s->flags |= SEC_EXCLUDE;
9915 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9918 /* Allocate memory for the section contents. We use bfd_zalloc
9919 here in case unused entries are not reclaimed before the
9920 section's contents are written out. This should not happen,
9921 but this way if it does we get a R_PPC64_NONE reloc in .rela
9922 sections instead of garbage.
9923 We also rely on the section contents being zero when writing
9925 s->contents = bfd_zalloc (dynobj, s->size);
9926 if (s->contents == NULL)
9930 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9932 if (!is_ppc64_elf (ibfd))
9935 s = ppc64_elf_tdata (ibfd)->got;
9936 if (s != NULL && s != htab->elf.sgot)
9939 s->flags |= SEC_EXCLUDE;
9942 s->contents = bfd_zalloc (ibfd, s->size);
9943 if (s->contents == NULL)
9947 s = ppc64_elf_tdata (ibfd)->relgot;
9951 s->flags |= SEC_EXCLUDE;
9954 s->contents = bfd_zalloc (ibfd, s->size);
9955 if (s->contents == NULL)
9963 if (htab->elf.dynamic_sections_created)
9965 bfd_boolean tls_opt;
9967 /* Add some entries to the .dynamic section. We fill in the
9968 values later, in ppc64_elf_finish_dynamic_sections, but we
9969 must add the entries now so that we get the correct size for
9970 the .dynamic section. The DT_DEBUG entry is filled in by the
9971 dynamic linker and used by the debugger. */
9972 #define add_dynamic_entry(TAG, VAL) \
9973 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9975 if (info->executable)
9977 if (!add_dynamic_entry (DT_DEBUG, 0))
9981 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9983 if (!add_dynamic_entry (DT_PLTGOT, 0)
9984 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9985 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9986 || !add_dynamic_entry (DT_JMPREL, 0)
9987 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9991 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9993 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9994 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9998 tls_opt = (!htab->params->no_tls_get_addr_opt
9999 && htab->tls_get_addr_fd != NULL
10000 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10001 if (tls_opt || !htab->opd_abi)
10003 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10009 if (!add_dynamic_entry (DT_RELA, 0)
10010 || !add_dynamic_entry (DT_RELASZ, 0)
10011 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10014 /* If any dynamic relocs apply to a read-only section,
10015 then we need a DT_TEXTREL entry. */
10016 if ((info->flags & DF_TEXTREL) == 0)
10017 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10019 if ((info->flags & DF_TEXTREL) != 0)
10021 if (!add_dynamic_entry (DT_TEXTREL, 0))
10026 #undef add_dynamic_entry
10031 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10034 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10036 if (h->plt.plist != NULL
10038 && !h->pointer_equality_needed)
10041 return _bfd_elf_hash_symbol (h);
10044 /* Determine the type of stub needed, if any, for a call. */
10046 static inline enum ppc_stub_type
10047 ppc_type_of_stub (asection *input_sec,
10048 const Elf_Internal_Rela *rel,
10049 struct ppc_link_hash_entry **hash,
10050 struct plt_entry **plt_ent,
10051 bfd_vma destination,
10052 unsigned long local_off)
10054 struct ppc_link_hash_entry *h = *hash;
10056 bfd_vma branch_offset;
10057 bfd_vma max_branch_offset;
10058 enum elf_ppc64_reloc_type r_type;
10062 struct plt_entry *ent;
10063 struct ppc_link_hash_entry *fdh = h;
10065 && h->oh->is_func_descriptor)
10067 fdh = ppc_follow_link (h->oh);
10071 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10072 if (ent->addend == rel->r_addend
10073 && ent->plt.offset != (bfd_vma) -1)
10076 return ppc_stub_plt_call;
10079 /* Here, we know we don't have a plt entry. If we don't have a
10080 either a defined function descriptor or a defined entry symbol
10081 in a regular object file, then it is pointless trying to make
10082 any other type of stub. */
10083 if (!is_static_defined (&fdh->elf)
10084 && !is_static_defined (&h->elf))
10085 return ppc_stub_none;
10087 else if (elf_local_got_ents (input_sec->owner) != NULL)
10089 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10090 struct plt_entry **local_plt = (struct plt_entry **)
10091 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10092 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10094 if (local_plt[r_symndx] != NULL)
10096 struct plt_entry *ent;
10098 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10099 if (ent->addend == rel->r_addend
10100 && ent->plt.offset != (bfd_vma) -1)
10103 return ppc_stub_plt_call;
10108 /* Determine where the call point is. */
10109 location = (input_sec->output_offset
10110 + input_sec->output_section->vma
10113 branch_offset = destination - location;
10114 r_type = ELF64_R_TYPE (rel->r_info);
10116 /* Determine if a long branch stub is needed. */
10117 max_branch_offset = 1 << 25;
10118 if (r_type != R_PPC64_REL24)
10119 max_branch_offset = 1 << 15;
10121 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10122 /* We need a stub. Figure out whether a long_branch or plt_branch
10123 is needed later. */
10124 return ppc_stub_long_branch;
10126 return ppc_stub_none;
10129 /* With power7 weakly ordered memory model, it is possible for ld.so
10130 to update a plt entry in one thread and have another thread see a
10131 stale zero toc entry. To avoid this we need some sort of acquire
10132 barrier in the call stub. One solution is to make the load of the
10133 toc word seem to appear to depend on the load of the function entry
10134 word. Another solution is to test for r2 being zero, and branch to
10135 the appropriate glink entry if so.
10137 . fake dep barrier compare
10138 . ld 12,xxx(2) ld 12,xxx(2)
10139 . mtctr 12 mtctr 12
10140 . xor 11,12,12 ld 2,xxx+8(2)
10141 . add 2,2,11 cmpldi 2,0
10142 . ld 2,xxx+8(2) bnectr+
10143 . bctr b <glink_entry>
10145 The solution involving the compare turns out to be faster, so
10146 that's what we use unless the branch won't reach. */
10148 #define ALWAYS_USE_FAKE_DEP 0
10149 #define ALWAYS_EMIT_R2SAVE 0
10151 #define PPC_LO(v) ((v) & 0xffff)
10152 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10153 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10155 static inline unsigned int
10156 plt_stub_size (struct ppc_link_hash_table *htab,
10157 struct ppc_stub_hash_entry *stub_entry,
10160 unsigned size = 12;
10162 if (ALWAYS_EMIT_R2SAVE
10163 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10165 if (PPC_HA (off) != 0)
10170 if (htab->params->plt_static_chain)
10172 if (htab->params->plt_thread_safe)
10174 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10177 if (stub_entry->h != NULL
10178 && (stub_entry->h == htab->tls_get_addr_fd
10179 || stub_entry->h == htab->tls_get_addr)
10180 && !htab->params->no_tls_get_addr_opt)
10185 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10186 then return the padding needed to do so. */
10187 static inline unsigned int
10188 plt_stub_pad (struct ppc_link_hash_table *htab,
10189 struct ppc_stub_hash_entry *stub_entry,
10192 int stub_align = 1 << htab->params->plt_stub_align;
10193 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10194 bfd_vma stub_off = stub_entry->stub_sec->size;
10196 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10197 > (stub_size & -stub_align))
10198 return stub_align - (stub_off & (stub_align - 1));
10202 /* Build a .plt call stub. */
10204 static inline bfd_byte *
10205 build_plt_stub (struct ppc_link_hash_table *htab,
10206 struct ppc_stub_hash_entry *stub_entry,
10207 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10209 bfd *obfd = htab->params->stub_bfd;
10210 bfd_boolean plt_load_toc = htab->opd_abi;
10211 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10212 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10213 bfd_boolean use_fake_dep = plt_thread_safe;
10214 bfd_vma cmp_branch_off = 0;
10216 if (!ALWAYS_USE_FAKE_DEP
10219 && !(stub_entry->h != NULL
10220 && (stub_entry->h == htab->tls_get_addr_fd
10221 || stub_entry->h == htab->tls_get_addr)
10222 && !htab->params->no_tls_get_addr_opt))
10224 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10225 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10226 / PLT_ENTRY_SIZE (htab));
10227 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10230 if (pltindex > 32768)
10231 glinkoff += (pltindex - 32768) * 4;
10233 + htab->glink->output_offset
10234 + htab->glink->output_section->vma);
10235 from = (p - stub_entry->stub_sec->contents
10236 + 4 * (ALWAYS_EMIT_R2SAVE
10237 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10238 + 4 * (PPC_HA (offset) != 0)
10239 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10240 != PPC_HA (offset))
10241 + 4 * (plt_static_chain != 0)
10243 + stub_entry->stub_sec->output_offset
10244 + stub_entry->stub_sec->output_section->vma);
10245 cmp_branch_off = to - from;
10246 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10249 if (PPC_HA (offset) != 0)
10253 if (ALWAYS_EMIT_R2SAVE
10254 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10255 r[0].r_offset += 4;
10256 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10257 r[1].r_offset = r[0].r_offset + 4;
10258 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10259 r[1].r_addend = r[0].r_addend;
10262 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10264 r[2].r_offset = r[1].r_offset + 4;
10265 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10266 r[2].r_addend = r[0].r_addend;
10270 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10271 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10272 r[2].r_addend = r[0].r_addend + 8;
10273 if (plt_static_chain)
10275 r[3].r_offset = r[2].r_offset + 4;
10276 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10277 r[3].r_addend = r[0].r_addend + 16;
10282 if (ALWAYS_EMIT_R2SAVE
10283 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10284 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10287 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10288 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10292 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10293 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10296 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10298 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10301 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10306 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10307 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10309 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10310 if (plt_static_chain)
10311 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10318 if (ALWAYS_EMIT_R2SAVE
10319 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10320 r[0].r_offset += 4;
10321 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10324 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10326 r[1].r_offset = r[0].r_offset + 4;
10327 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10328 r[1].r_addend = r[0].r_addend;
10332 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10333 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10334 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10335 if (plt_static_chain)
10337 r[2].r_offset = r[1].r_offset + 4;
10338 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10339 r[2].r_addend = r[0].r_addend + 8;
10344 if (ALWAYS_EMIT_R2SAVE
10345 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10346 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10347 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10349 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10351 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10354 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10359 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10360 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10362 if (plt_static_chain)
10363 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10364 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10367 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10369 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10370 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10371 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10374 bfd_put_32 (obfd, BCTR, p), p += 4;
10378 /* Build a special .plt call stub for __tls_get_addr. */
10380 #define LD_R11_0R3 0xe9630000
10381 #define LD_R12_0R3 0xe9830000
10382 #define MR_R0_R3 0x7c601b78
10383 #define CMPDI_R11_0 0x2c2b0000
10384 #define ADD_R3_R12_R13 0x7c6c6a14
10385 #define BEQLR 0x4d820020
10386 #define MR_R3_R0 0x7c030378
10387 #define STD_R11_0R1 0xf9610000
10388 #define BCTRL 0x4e800421
10389 #define LD_R11_0R1 0xe9610000
10390 #define MTLR_R11 0x7d6803a6
10392 static inline bfd_byte *
10393 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10394 struct ppc_stub_hash_entry *stub_entry,
10395 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10397 bfd *obfd = htab->params->stub_bfd;
10399 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10400 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10401 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10402 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10403 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10404 bfd_put_32 (obfd, BEQLR, p), p += 4;
10405 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10406 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10407 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10410 r[0].r_offset += 9 * 4;
10411 p = build_plt_stub (htab, stub_entry, p, offset, r);
10412 bfd_put_32 (obfd, BCTRL, p - 4);
10414 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10415 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10416 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10417 bfd_put_32 (obfd, BLR, p), p += 4;
10422 static Elf_Internal_Rela *
10423 get_relocs (asection *sec, int count)
10425 Elf_Internal_Rela *relocs;
10426 struct bfd_elf_section_data *elfsec_data;
10428 elfsec_data = elf_section_data (sec);
10429 relocs = elfsec_data->relocs;
10430 if (relocs == NULL)
10432 bfd_size_type relsize;
10433 relsize = sec->reloc_count * sizeof (*relocs);
10434 relocs = bfd_alloc (sec->owner, relsize);
10435 if (relocs == NULL)
10437 elfsec_data->relocs = relocs;
10438 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10439 sizeof (Elf_Internal_Shdr));
10440 if (elfsec_data->rela.hdr == NULL)
10442 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10443 * sizeof (Elf64_External_Rela));
10444 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10445 sec->reloc_count = 0;
10447 relocs += sec->reloc_count;
10448 sec->reloc_count += count;
10453 get_r2off (struct bfd_link_info *info,
10454 struct ppc_stub_hash_entry *stub_entry)
10456 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10457 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10461 /* Support linking -R objects. Get the toc pointer from the
10464 if (!htab->opd_abi)
10466 asection *opd = stub_entry->h->elf.root.u.def.section;
10467 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10469 if (strcmp (opd->name, ".opd") != 0
10470 || opd->reloc_count != 0)
10472 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10473 stub_entry->h->elf.root.root.string);
10474 bfd_set_error (bfd_error_bad_value);
10477 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10479 r2off = bfd_get_64 (opd->owner, buf);
10480 r2off -= elf_gp (info->output_bfd);
10482 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10487 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10489 struct ppc_stub_hash_entry *stub_entry;
10490 struct ppc_branch_hash_entry *br_entry;
10491 struct bfd_link_info *info;
10492 struct ppc_link_hash_table *htab;
10497 Elf_Internal_Rela *r;
10500 /* Massage our args to the form they really have. */
10501 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10504 htab = ppc_hash_table (info);
10508 /* Make a note of the offset within the stubs for this entry. */
10509 stub_entry->stub_offset = stub_entry->stub_sec->size;
10510 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10512 htab->stub_count[stub_entry->stub_type - 1] += 1;
10513 switch (stub_entry->stub_type)
10515 case ppc_stub_long_branch:
10516 case ppc_stub_long_branch_r2off:
10517 /* Branches are relative. This is where we are going to. */
10518 dest = (stub_entry->target_value
10519 + stub_entry->target_section->output_offset
10520 + stub_entry->target_section->output_section->vma);
10521 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10524 /* And this is where we are coming from. */
10525 off -= (stub_entry->stub_offset
10526 + stub_entry->stub_sec->output_offset
10527 + stub_entry->stub_sec->output_section->vma);
10530 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10532 bfd_vma r2off = get_r2off (info, stub_entry);
10536 htab->stub_error = TRUE;
10539 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10542 if (PPC_HA (r2off) != 0)
10545 bfd_put_32 (htab->params->stub_bfd,
10546 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10549 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10553 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10555 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10557 info->callbacks->einfo
10558 (_("%P: long branch stub `%s' offset overflow\n"),
10559 stub_entry->root.string);
10560 htab->stub_error = TRUE;
10564 if (info->emitrelocations)
10566 r = get_relocs (stub_entry->stub_sec, 1);
10569 r->r_offset = loc - stub_entry->stub_sec->contents;
10570 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10571 r->r_addend = dest;
10572 if (stub_entry->h != NULL)
10574 struct elf_link_hash_entry **hashes;
10575 unsigned long symndx;
10576 struct ppc_link_hash_entry *h;
10578 hashes = elf_sym_hashes (htab->params->stub_bfd);
10579 if (hashes == NULL)
10581 bfd_size_type hsize;
10583 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10584 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10585 if (hashes == NULL)
10587 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10588 htab->stub_globals = 1;
10590 symndx = htab->stub_globals++;
10592 hashes[symndx] = &h->elf;
10593 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10594 if (h->oh != NULL && h->oh->is_func)
10595 h = ppc_follow_link (h->oh);
10596 if (h->elf.root.u.def.section != stub_entry->target_section)
10597 /* H is an opd symbol. The addend must be zero. */
10601 off = (h->elf.root.u.def.value
10602 + h->elf.root.u.def.section->output_offset
10603 + h->elf.root.u.def.section->output_section->vma);
10604 r->r_addend -= off;
10610 case ppc_stub_plt_branch:
10611 case ppc_stub_plt_branch_r2off:
10612 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10613 stub_entry->root.string + 9,
10615 if (br_entry == NULL)
10617 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10618 stub_entry->root.string);
10619 htab->stub_error = TRUE;
10623 dest = (stub_entry->target_value
10624 + stub_entry->target_section->output_offset
10625 + stub_entry->target_section->output_section->vma);
10626 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10627 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10629 bfd_put_64 (htab->brlt->owner, dest,
10630 htab->brlt->contents + br_entry->offset);
10632 if (br_entry->iter == htab->stub_iteration)
10634 br_entry->iter = 0;
10636 if (htab->relbrlt != NULL)
10638 /* Create a reloc for the branch lookup table entry. */
10639 Elf_Internal_Rela rela;
10642 rela.r_offset = (br_entry->offset
10643 + htab->brlt->output_offset
10644 + htab->brlt->output_section->vma);
10645 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10646 rela.r_addend = dest;
10648 rl = htab->relbrlt->contents;
10649 rl += (htab->relbrlt->reloc_count++
10650 * sizeof (Elf64_External_Rela));
10651 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10653 else if (info->emitrelocations)
10655 r = get_relocs (htab->brlt, 1);
10658 /* brlt, being SEC_LINKER_CREATED does not go through the
10659 normal reloc processing. Symbols and offsets are not
10660 translated from input file to output file form, so
10661 set up the offset per the output file. */
10662 r->r_offset = (br_entry->offset
10663 + htab->brlt->output_offset
10664 + htab->brlt->output_section->vma);
10665 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10666 r->r_addend = dest;
10670 dest = (br_entry->offset
10671 + htab->brlt->output_offset
10672 + htab->brlt->output_section->vma);
10675 - elf_gp (htab->brlt->output_section->owner)
10676 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10678 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10680 info->callbacks->einfo
10681 (_("%P: linkage table error against `%T'\n"),
10682 stub_entry->root.string);
10683 bfd_set_error (bfd_error_bad_value);
10684 htab->stub_error = TRUE;
10688 if (info->emitrelocations)
10690 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10693 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10694 if (bfd_big_endian (info->output_bfd))
10695 r[0].r_offset += 2;
10696 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10697 r[0].r_offset += 4;
10698 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10699 r[0].r_addend = dest;
10700 if (PPC_HA (off) != 0)
10702 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10703 r[1].r_offset = r[0].r_offset + 4;
10704 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10705 r[1].r_addend = r[0].r_addend;
10709 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10711 if (PPC_HA (off) != 0)
10714 bfd_put_32 (htab->params->stub_bfd,
10715 ADDIS_R12_R2 | PPC_HA (off), loc);
10717 bfd_put_32 (htab->params->stub_bfd,
10718 LD_R12_0R12 | PPC_LO (off), loc);
10723 bfd_put_32 (htab->params->stub_bfd,
10724 LD_R12_0R2 | PPC_LO (off), loc);
10729 bfd_vma r2off = get_r2off (info, stub_entry);
10731 if (r2off == 0 && htab->opd_abi)
10733 htab->stub_error = TRUE;
10737 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10740 if (PPC_HA (off) != 0)
10743 bfd_put_32 (htab->params->stub_bfd,
10744 ADDIS_R12_R2 | PPC_HA (off), loc);
10746 bfd_put_32 (htab->params->stub_bfd,
10747 LD_R12_0R12 | PPC_LO (off), loc);
10750 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10752 if (PPC_HA (r2off) != 0)
10756 bfd_put_32 (htab->params->stub_bfd,
10757 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10759 if (PPC_LO (r2off) != 0)
10763 bfd_put_32 (htab->params->stub_bfd,
10764 ADDI_R2_R2 | PPC_LO (r2off), loc);
10768 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10770 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10773 case ppc_stub_plt_call:
10774 case ppc_stub_plt_call_r2save:
10775 if (stub_entry->h != NULL
10776 && stub_entry->h->is_func_descriptor
10777 && stub_entry->h->oh != NULL)
10779 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10781 /* If the old-ABI "dot-symbol" is undefined make it weak so
10782 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10783 FIXME: We used to define the symbol on one of the call
10784 stubs instead, which is why we test symbol section id
10785 against htab->top_id in various places. Likely all
10786 these checks could now disappear. */
10787 if (fh->elf.root.type == bfd_link_hash_undefined)
10788 fh->elf.root.type = bfd_link_hash_undefweak;
10789 /* Stop undo_symbol_twiddle changing it back to undefined. */
10790 fh->was_undefined = 0;
10793 /* Now build the stub. */
10794 dest = stub_entry->plt_ent->plt.offset & ~1;
10795 if (dest >= (bfd_vma) -2)
10798 plt = htab->elf.splt;
10799 if (!htab->elf.dynamic_sections_created
10800 || stub_entry->h == NULL
10801 || stub_entry->h->elf.dynindx == -1)
10802 plt = htab->elf.iplt;
10804 dest += plt->output_offset + plt->output_section->vma;
10806 if (stub_entry->h == NULL
10807 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10809 Elf_Internal_Rela rela;
10812 rela.r_offset = dest;
10814 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10816 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10817 rela.r_addend = (stub_entry->target_value
10818 + stub_entry->target_section->output_offset
10819 + stub_entry->target_section->output_section->vma);
10821 rl = (htab->elf.irelplt->contents
10822 + (htab->elf.irelplt->reloc_count++
10823 * sizeof (Elf64_External_Rela)));
10824 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10825 stub_entry->plt_ent->plt.offset |= 1;
10829 - elf_gp (plt->output_section->owner)
10830 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10832 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10834 info->callbacks->einfo
10835 (_("%P: linkage table error against `%T'\n"),
10836 stub_entry->h != NULL
10837 ? stub_entry->h->elf.root.root.string
10839 bfd_set_error (bfd_error_bad_value);
10840 htab->stub_error = TRUE;
10844 if (htab->params->plt_stub_align != 0)
10846 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10848 stub_entry->stub_sec->size += pad;
10849 stub_entry->stub_offset = stub_entry->stub_sec->size;
10854 if (info->emitrelocations)
10856 r = get_relocs (stub_entry->stub_sec,
10857 ((PPC_HA (off) != 0)
10859 ? 2 + (htab->params->plt_static_chain
10860 && PPC_HA (off + 16) == PPC_HA (off))
10864 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10865 if (bfd_big_endian (info->output_bfd))
10866 r[0].r_offset += 2;
10867 r[0].r_addend = dest;
10869 if (stub_entry->h != NULL
10870 && (stub_entry->h == htab->tls_get_addr_fd
10871 || stub_entry->h == htab->tls_get_addr)
10872 && !htab->params->no_tls_get_addr_opt)
10873 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10875 p = build_plt_stub (htab, stub_entry, loc, off, r);
10884 stub_entry->stub_sec->size += size;
10886 if (htab->params->emit_stub_syms)
10888 struct elf_link_hash_entry *h;
10891 const char *const stub_str[] = { "long_branch",
10892 "long_branch_r2off",
10894 "plt_branch_r2off",
10898 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10899 len2 = strlen (stub_entry->root.string);
10900 name = bfd_malloc (len1 + len2 + 2);
10903 memcpy (name, stub_entry->root.string, 9);
10904 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10905 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10906 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10909 if (h->root.type == bfd_link_hash_new)
10911 h->root.type = bfd_link_hash_defined;
10912 h->root.u.def.section = stub_entry->stub_sec;
10913 h->root.u.def.value = stub_entry->stub_offset;
10914 h->ref_regular = 1;
10915 h->def_regular = 1;
10916 h->ref_regular_nonweak = 1;
10917 h->forced_local = 1;
10925 /* As above, but don't actually build the stub. Just bump offset so
10926 we know stub section sizes, and select plt_branch stubs where
10927 long_branch stubs won't do. */
10930 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10932 struct ppc_stub_hash_entry *stub_entry;
10933 struct bfd_link_info *info;
10934 struct ppc_link_hash_table *htab;
10938 /* Massage our args to the form they really have. */
10939 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10942 htab = ppc_hash_table (info);
10946 if (stub_entry->stub_type == ppc_stub_plt_call
10947 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10950 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10951 if (off >= (bfd_vma) -2)
10953 plt = htab->elf.splt;
10954 if (!htab->elf.dynamic_sections_created
10955 || stub_entry->h == NULL
10956 || stub_entry->h->elf.dynindx == -1)
10957 plt = htab->elf.iplt;
10958 off += (plt->output_offset
10959 + plt->output_section->vma
10960 - elf_gp (plt->output_section->owner)
10961 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10963 size = plt_stub_size (htab, stub_entry, off);
10964 if (htab->params->plt_stub_align)
10965 size += plt_stub_pad (htab, stub_entry, off);
10966 if (info->emitrelocations)
10968 stub_entry->stub_sec->reloc_count
10969 += ((PPC_HA (off) != 0)
10971 ? 2 + (htab->params->plt_static_chain
10972 && PPC_HA (off + 16) == PPC_HA (off))
10974 stub_entry->stub_sec->flags |= SEC_RELOC;
10979 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10982 bfd_vma local_off = 0;
10984 off = (stub_entry->target_value
10985 + stub_entry->target_section->output_offset
10986 + stub_entry->target_section->output_section->vma);
10987 off -= (stub_entry->stub_sec->size
10988 + stub_entry->stub_sec->output_offset
10989 + stub_entry->stub_sec->output_section->vma);
10991 /* Reset the stub type from the plt variant in case we now
10992 can reach with a shorter stub. */
10993 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10994 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10997 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10999 r2off = get_r2off (info, stub_entry);
11000 if (r2off == 0 && htab->opd_abi)
11002 htab->stub_error = TRUE;
11006 if (PPC_HA (r2off) != 0)
11011 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11013 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11014 Do the same for -R objects without function descriptors. */
11015 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11016 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11019 struct ppc_branch_hash_entry *br_entry;
11021 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11022 stub_entry->root.string + 9,
11024 if (br_entry == NULL)
11026 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11027 stub_entry->root.string);
11028 htab->stub_error = TRUE;
11032 if (br_entry->iter != htab->stub_iteration)
11034 br_entry->iter = htab->stub_iteration;
11035 br_entry->offset = htab->brlt->size;
11036 htab->brlt->size += 8;
11038 if (htab->relbrlt != NULL)
11039 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11040 else if (info->emitrelocations)
11042 htab->brlt->reloc_count += 1;
11043 htab->brlt->flags |= SEC_RELOC;
11047 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11048 off = (br_entry->offset
11049 + htab->brlt->output_offset
11050 + htab->brlt->output_section->vma
11051 - elf_gp (htab->brlt->output_section->owner)
11052 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11054 if (info->emitrelocations)
11056 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11057 stub_entry->stub_sec->flags |= SEC_RELOC;
11060 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11063 if (PPC_HA (off) != 0)
11069 if (PPC_HA (off) != 0)
11072 if (PPC_HA (r2off) != 0)
11074 if (PPC_LO (r2off) != 0)
11078 else if (info->emitrelocations)
11080 stub_entry->stub_sec->reloc_count += 1;
11081 stub_entry->stub_sec->flags |= SEC_RELOC;
11085 stub_entry->stub_sec->size += size;
11089 /* Set up various things so that we can make a list of input sections
11090 for each output section included in the link. Returns -1 on error,
11091 0 when no stubs will be needed, and 1 on success. */
11094 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11097 int top_id, top_index, id;
11099 asection **input_list;
11101 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11106 /* Find the top input section id. */
11107 for (input_bfd = info->input_bfds, top_id = 3;
11109 input_bfd = input_bfd->link.next)
11111 for (section = input_bfd->sections;
11113 section = section->next)
11115 if (top_id < section->id)
11116 top_id = section->id;
11120 htab->top_id = top_id;
11121 amt = sizeof (struct map_stub) * (top_id + 1);
11122 htab->stub_group = bfd_zmalloc (amt);
11123 if (htab->stub_group == NULL)
11126 /* Set toc_off for com, und, abs and ind sections. */
11127 for (id = 0; id < 3; id++)
11128 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11130 /* We can't use output_bfd->section_count here to find the top output
11131 section index as some sections may have been removed, and
11132 strip_excluded_output_sections doesn't renumber the indices. */
11133 for (section = info->output_bfd->sections, top_index = 0;
11135 section = section->next)
11137 if (top_index < section->index)
11138 top_index = section->index;
11141 htab->top_index = top_index;
11142 amt = sizeof (asection *) * (top_index + 1);
11143 input_list = bfd_zmalloc (amt);
11144 htab->input_list = input_list;
11145 if (input_list == NULL)
11151 /* Set up for first pass at multitoc partitioning. */
11154 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11156 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11158 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11159 htab->toc_bfd = NULL;
11160 htab->toc_first_sec = NULL;
11163 /* The linker repeatedly calls this function for each TOC input section
11164 and linker generated GOT section. Group input bfds such that the toc
11165 within a group is less than 64k in size. */
11168 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11170 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11171 bfd_vma addr, off, limit;
11176 if (!htab->second_toc_pass)
11178 /* Keep track of the first .toc or .got section for this input bfd. */
11179 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11183 htab->toc_bfd = isec->owner;
11184 htab->toc_first_sec = isec;
11187 addr = isec->output_offset + isec->output_section->vma;
11188 off = addr - htab->toc_curr;
11189 limit = 0x80008000;
11190 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11192 if (off + isec->size > limit)
11194 addr = (htab->toc_first_sec->output_offset
11195 + htab->toc_first_sec->output_section->vma);
11196 htab->toc_curr = addr;
11199 /* toc_curr is the base address of this toc group. Set elf_gp
11200 for the input section to be the offset relative to the
11201 output toc base plus 0x8000. Making the input elf_gp an
11202 offset allows us to move the toc as a whole without
11203 recalculating input elf_gp. */
11204 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11205 off += TOC_BASE_OFF;
11207 /* Die if someone uses a linker script that doesn't keep input
11208 file .toc and .got together. */
11210 && elf_gp (isec->owner) != 0
11211 && elf_gp (isec->owner) != off)
11214 elf_gp (isec->owner) = off;
11218 /* During the second pass toc_first_sec points to the start of
11219 a toc group, and toc_curr is used to track the old elf_gp.
11220 We use toc_bfd to ensure we only look at each bfd once. */
11221 if (htab->toc_bfd == isec->owner)
11223 htab->toc_bfd = isec->owner;
11225 if (htab->toc_first_sec == NULL
11226 || htab->toc_curr != elf_gp (isec->owner))
11228 htab->toc_curr = elf_gp (isec->owner);
11229 htab->toc_first_sec = isec;
11231 addr = (htab->toc_first_sec->output_offset
11232 + htab->toc_first_sec->output_section->vma);
11233 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11234 elf_gp (isec->owner) = off;
11239 /* Called via elf_link_hash_traverse to merge GOT entries for global
11243 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11245 if (h->root.type == bfd_link_hash_indirect)
11248 merge_got_entries (&h->got.glist);
11253 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11257 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11259 struct got_entry *gent;
11261 if (h->root.type == bfd_link_hash_indirect)
11264 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11265 if (!gent->is_indirect)
11266 allocate_got (h, (struct bfd_link_info *) inf, gent);
11270 /* Called on the first multitoc pass after the last call to
11271 ppc64_elf_next_toc_section. This function removes duplicate GOT
11275 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11277 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11278 struct bfd *ibfd, *ibfd2;
11279 bfd_boolean done_something;
11281 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11283 if (!htab->do_multi_toc)
11286 /* Merge global sym got entries within a toc group. */
11287 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11289 /* And tlsld_got. */
11290 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11292 struct got_entry *ent, *ent2;
11294 if (!is_ppc64_elf (ibfd))
11297 ent = ppc64_tlsld_got (ibfd);
11298 if (!ent->is_indirect
11299 && ent->got.offset != (bfd_vma) -1)
11301 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11303 if (!is_ppc64_elf (ibfd2))
11306 ent2 = ppc64_tlsld_got (ibfd2);
11307 if (!ent2->is_indirect
11308 && ent2->got.offset != (bfd_vma) -1
11309 && elf_gp (ibfd2) == elf_gp (ibfd))
11311 ent2->is_indirect = TRUE;
11312 ent2->got.ent = ent;
11318 /* Zap sizes of got sections. */
11319 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11320 htab->elf.irelplt->size -= htab->got_reli_size;
11321 htab->got_reli_size = 0;
11323 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11325 asection *got, *relgot;
11327 if (!is_ppc64_elf (ibfd))
11330 got = ppc64_elf_tdata (ibfd)->got;
11333 got->rawsize = got->size;
11335 relgot = ppc64_elf_tdata (ibfd)->relgot;
11336 relgot->rawsize = relgot->size;
11341 /* Now reallocate the got, local syms first. We don't need to
11342 allocate section contents again since we never increase size. */
11343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11345 struct got_entry **lgot_ents;
11346 struct got_entry **end_lgot_ents;
11347 struct plt_entry **local_plt;
11348 struct plt_entry **end_local_plt;
11349 unsigned char *lgot_masks;
11350 bfd_size_type locsymcount;
11351 Elf_Internal_Shdr *symtab_hdr;
11354 if (!is_ppc64_elf (ibfd))
11357 lgot_ents = elf_local_got_ents (ibfd);
11361 symtab_hdr = &elf_symtab_hdr (ibfd);
11362 locsymcount = symtab_hdr->sh_info;
11363 end_lgot_ents = lgot_ents + locsymcount;
11364 local_plt = (struct plt_entry **) end_lgot_ents;
11365 end_local_plt = local_plt + locsymcount;
11366 lgot_masks = (unsigned char *) end_local_plt;
11367 s = ppc64_elf_tdata (ibfd)->got;
11368 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11370 struct got_entry *ent;
11372 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11374 unsigned int ent_size = 8;
11375 unsigned int rel_size = sizeof (Elf64_External_Rela);
11377 ent->got.offset = s->size;
11378 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11383 s->size += ent_size;
11384 if ((*lgot_masks & PLT_IFUNC) != 0)
11386 htab->elf.irelplt->size += rel_size;
11387 htab->got_reli_size += rel_size;
11389 else if (info->shared)
11391 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11392 srel->size += rel_size;
11398 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11400 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11402 struct got_entry *ent;
11404 if (!is_ppc64_elf (ibfd))
11407 ent = ppc64_tlsld_got (ibfd);
11408 if (!ent->is_indirect
11409 && ent->got.offset != (bfd_vma) -1)
11411 asection *s = ppc64_elf_tdata (ibfd)->got;
11412 ent->got.offset = s->size;
11416 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11417 srel->size += sizeof (Elf64_External_Rela);
11422 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11423 if (!done_something)
11424 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11428 if (!is_ppc64_elf (ibfd))
11431 got = ppc64_elf_tdata (ibfd)->got;
11434 done_something = got->rawsize != got->size;
11435 if (done_something)
11440 if (done_something)
11441 (*htab->params->layout_sections_again) ();
11443 /* Set up for second pass over toc sections to recalculate elf_gp
11444 on input sections. */
11445 htab->toc_bfd = NULL;
11446 htab->toc_first_sec = NULL;
11447 htab->second_toc_pass = TRUE;
11448 return done_something;
11451 /* Called after second pass of multitoc partitioning. */
11454 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11456 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11458 /* After the second pass, toc_curr tracks the TOC offset used
11459 for code sections below in ppc64_elf_next_input_section. */
11460 htab->toc_curr = TOC_BASE_OFF;
11463 /* No toc references were found in ISEC. If the code in ISEC makes no
11464 calls, then there's no need to use toc adjusting stubs when branching
11465 into ISEC. Actually, indirect calls from ISEC are OK as they will
11466 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11467 needed, and 2 if a cyclical call-graph was found but no other reason
11468 for a stub was detected. If called from the top level, a return of
11469 2 means the same as a return of 0. */
11472 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11476 /* Mark this section as checked. */
11477 isec->call_check_done = 1;
11479 /* We know none of our code bearing sections will need toc stubs. */
11480 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11483 if (isec->size == 0)
11486 if (isec->output_section == NULL)
11490 if (isec->reloc_count != 0)
11492 Elf_Internal_Rela *relstart, *rel;
11493 Elf_Internal_Sym *local_syms;
11494 struct ppc_link_hash_table *htab;
11496 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11497 info->keep_memory);
11498 if (relstart == NULL)
11501 /* Look for branches to outside of this section. */
11503 htab = ppc_hash_table (info);
11507 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11509 enum elf_ppc64_reloc_type r_type;
11510 unsigned long r_symndx;
11511 struct elf_link_hash_entry *h;
11512 struct ppc_link_hash_entry *eh;
11513 Elf_Internal_Sym *sym;
11515 struct _opd_sec_data *opd;
11519 r_type = ELF64_R_TYPE (rel->r_info);
11520 if (r_type != R_PPC64_REL24
11521 && r_type != R_PPC64_REL14
11522 && r_type != R_PPC64_REL14_BRTAKEN
11523 && r_type != R_PPC64_REL14_BRNTAKEN)
11526 r_symndx = ELF64_R_SYM (rel->r_info);
11527 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11534 /* Calls to dynamic lib functions go through a plt call stub
11536 eh = (struct ppc_link_hash_entry *) h;
11538 && (eh->elf.plt.plist != NULL
11540 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11546 if (sym_sec == NULL)
11547 /* Ignore other undefined symbols. */
11550 /* Assume branches to other sections not included in the
11551 link need stubs too, to cover -R and absolute syms. */
11552 if (sym_sec->output_section == NULL)
11559 sym_value = sym->st_value;
11562 if (h->root.type != bfd_link_hash_defined
11563 && h->root.type != bfd_link_hash_defweak)
11565 sym_value = h->root.u.def.value;
11567 sym_value += rel->r_addend;
11569 /* If this branch reloc uses an opd sym, find the code section. */
11570 opd = get_opd_info (sym_sec);
11573 if (h == NULL && opd->adjust != NULL)
11577 adjust = opd->adjust[sym->st_value / 8];
11579 /* Assume deleted functions won't ever be called. */
11581 sym_value += adjust;
11584 dest = opd_entry_value (sym_sec, sym_value,
11585 &sym_sec, NULL, FALSE);
11586 if (dest == (bfd_vma) -1)
11591 + sym_sec->output_offset
11592 + sym_sec->output_section->vma);
11594 /* Ignore branch to self. */
11595 if (sym_sec == isec)
11598 /* If the called function uses the toc, we need a stub. */
11599 if (sym_sec->has_toc_reloc
11600 || sym_sec->makes_toc_func_call)
11606 /* Assume any branch that needs a long branch stub might in fact
11607 need a plt_branch stub. A plt_branch stub uses r2. */
11608 else if (dest - (isec->output_offset
11609 + isec->output_section->vma
11610 + rel->r_offset) + (1 << 25)
11611 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11619 /* If calling back to a section in the process of being
11620 tested, we can't say for sure that no toc adjusting stubs
11621 are needed, so don't return zero. */
11622 else if (sym_sec->call_check_in_progress)
11625 /* Branches to another section that itself doesn't have any TOC
11626 references are OK. Recursively call ourselves to check. */
11627 else if (!sym_sec->call_check_done)
11631 /* Mark current section as indeterminate, so that other
11632 sections that call back to current won't be marked as
11634 isec->call_check_in_progress = 1;
11635 recur = toc_adjusting_stub_needed (info, sym_sec);
11636 isec->call_check_in_progress = 0;
11647 if (local_syms != NULL
11648 && (elf_symtab_hdr (isec->owner).contents
11649 != (unsigned char *) local_syms))
11651 if (elf_section_data (isec)->relocs != relstart)
11656 && isec->map_head.s != NULL
11657 && (strcmp (isec->output_section->name, ".init") == 0
11658 || strcmp (isec->output_section->name, ".fini") == 0))
11660 if (isec->map_head.s->has_toc_reloc
11661 || isec->map_head.s->makes_toc_func_call)
11663 else if (!isec->map_head.s->call_check_done)
11666 isec->call_check_in_progress = 1;
11667 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11668 isec->call_check_in_progress = 0;
11675 isec->makes_toc_func_call = 1;
11680 /* The linker repeatedly calls this function for each input section,
11681 in the order that input sections are linked into output sections.
11682 Build lists of input sections to determine groupings between which
11683 we may insert linker stubs. */
11686 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11688 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11693 if ((isec->output_section->flags & SEC_CODE) != 0
11694 && isec->output_section->index <= htab->top_index)
11696 asection **list = htab->input_list + isec->output_section->index;
11697 /* Steal the link_sec pointer for our list. */
11698 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11699 /* This happens to make the list in reverse order,
11700 which is what we want. */
11701 PREV_SEC (isec) = *list;
11705 if (htab->multi_toc_needed)
11707 /* Analyse sections that aren't already flagged as needing a
11708 valid toc pointer. Exclude .fixup for the linux kernel.
11709 .fixup contains branches, but only back to the function that
11710 hit an exception. */
11711 if (!(isec->has_toc_reloc
11712 || (isec->flags & SEC_CODE) == 0
11713 || strcmp (isec->name, ".fixup") == 0
11714 || isec->call_check_done))
11716 if (toc_adjusting_stub_needed (info, isec) < 0)
11719 /* Make all sections use the TOC assigned for this object file.
11720 This will be wrong for pasted sections; We fix that in
11721 check_pasted_section(). */
11722 if (elf_gp (isec->owner) != 0)
11723 htab->toc_curr = elf_gp (isec->owner);
11726 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11730 /* Check that all .init and .fini sections use the same toc, if they
11731 have toc relocs. */
11734 check_pasted_section (struct bfd_link_info *info, const char *name)
11736 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11740 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11741 bfd_vma toc_off = 0;
11744 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11745 if (i->has_toc_reloc)
11748 toc_off = htab->stub_group[i->id].toc_off;
11749 else if (toc_off != htab->stub_group[i->id].toc_off)
11754 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11755 if (i->makes_toc_func_call)
11757 toc_off = htab->stub_group[i->id].toc_off;
11761 /* Make sure the whole pasted function uses the same toc offset. */
11763 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11764 htab->stub_group[i->id].toc_off = toc_off;
11770 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11772 return (check_pasted_section (info, ".init")
11773 & check_pasted_section (info, ".fini"));
11776 /* See whether we can group stub sections together. Grouping stub
11777 sections may result in fewer stubs. More importantly, we need to
11778 put all .init* and .fini* stubs at the beginning of the .init or
11779 .fini output sections respectively, because glibc splits the
11780 _init and _fini functions into multiple parts. Putting a stub in
11781 the middle of a function is not a good idea. */
11784 group_sections (struct ppc_link_hash_table *htab,
11785 bfd_size_type stub_group_size,
11786 bfd_boolean stubs_always_before_branch)
11789 bfd_size_type stub14_group_size;
11790 bfd_boolean suppress_size_errors;
11792 suppress_size_errors = FALSE;
11793 stub14_group_size = stub_group_size;
11794 if (stub_group_size == 1)
11796 /* Default values. */
11797 if (stubs_always_before_branch)
11799 stub_group_size = 0x1e00000;
11800 stub14_group_size = 0x7800;
11804 stub_group_size = 0x1c00000;
11805 stub14_group_size = 0x7000;
11807 suppress_size_errors = TRUE;
11810 list = htab->input_list + htab->top_index;
11813 asection *tail = *list;
11814 while (tail != NULL)
11818 bfd_size_type total;
11819 bfd_boolean big_sec;
11823 total = tail->size;
11824 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11825 && ppc64_elf_section_data (tail)->has_14bit_branch
11826 ? stub14_group_size : stub_group_size);
11827 if (big_sec && !suppress_size_errors)
11828 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11829 tail->owner, tail);
11830 curr_toc = htab->stub_group[tail->id].toc_off;
11832 while ((prev = PREV_SEC (curr)) != NULL
11833 && ((total += curr->output_offset - prev->output_offset)
11834 < (ppc64_elf_section_data (prev) != NULL
11835 && ppc64_elf_section_data (prev)->has_14bit_branch
11836 ? stub14_group_size : stub_group_size))
11837 && htab->stub_group[prev->id].toc_off == curr_toc)
11840 /* OK, the size from the start of CURR to the end is less
11841 than stub_group_size and thus can be handled by one stub
11842 section. (or the tail section is itself larger than
11843 stub_group_size, in which case we may be toast.) We
11844 should really be keeping track of the total size of stubs
11845 added here, as stubs contribute to the final output
11846 section size. That's a little tricky, and this way will
11847 only break if stubs added make the total size more than
11848 2^25, ie. for the default stub_group_size, if stubs total
11849 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11852 prev = PREV_SEC (tail);
11853 /* Set up this stub group. */
11854 htab->stub_group[tail->id].link_sec = curr;
11856 while (tail != curr && (tail = prev) != NULL);
11858 /* But wait, there's more! Input sections up to stub_group_size
11859 bytes before the stub section can be handled by it too.
11860 Don't do this if we have a really large section after the
11861 stubs, as adding more stubs increases the chance that
11862 branches may not reach into the stub section. */
11863 if (!stubs_always_before_branch && !big_sec)
11866 while (prev != NULL
11867 && ((total += tail->output_offset - prev->output_offset)
11868 < (ppc64_elf_section_data (prev) != NULL
11869 && ppc64_elf_section_data (prev)->has_14bit_branch
11870 ? stub14_group_size : stub_group_size))
11871 && htab->stub_group[prev->id].toc_off == curr_toc)
11874 prev = PREV_SEC (tail);
11875 htab->stub_group[tail->id].link_sec = curr;
11881 while (list-- != htab->input_list);
11882 free (htab->input_list);
11886 static const unsigned char glink_eh_frame_cie[] =
11888 0, 0, 0, 16, /* length. */
11889 0, 0, 0, 0, /* id. */
11890 1, /* CIE version. */
11891 'z', 'R', 0, /* Augmentation string. */
11892 4, /* Code alignment. */
11893 0x78, /* Data alignment. */
11895 1, /* Augmentation size. */
11896 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11897 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11900 /* Stripping output sections is normally done before dynamic section
11901 symbols have been allocated. This function is called later, and
11902 handles cases like htab->brlt which is mapped to its own output
11906 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11908 if (isec->size == 0
11909 && isec->output_section->size == 0
11910 && !(isec->output_section->flags & SEC_KEEP)
11911 && !bfd_section_removed_from_list (info->output_bfd,
11912 isec->output_section)
11913 && elf_section_data (isec->output_section)->dynindx == 0)
11915 isec->output_section->flags |= SEC_EXCLUDE;
11916 bfd_section_list_remove (info->output_bfd, isec->output_section);
11917 info->output_bfd->section_count--;
11921 /* Determine and set the size of the stub section for a final link.
11923 The basic idea here is to examine all the relocations looking for
11924 PC-relative calls to a target that is unreachable with a "bl"
11928 ppc64_elf_size_stubs (struct bfd_link_info *info)
11930 bfd_size_type stub_group_size;
11931 bfd_boolean stubs_always_before_branch;
11932 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11937 if (htab->params->plt_thread_safe == -1 && !info->executable)
11938 htab->params->plt_thread_safe = 1;
11939 if (!htab->opd_abi)
11940 htab->params->plt_thread_safe = 0;
11941 else if (htab->params->plt_thread_safe == -1)
11943 static const char *const thread_starter[] =
11947 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11949 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11950 "mq_notify", "create_timer",
11954 "GOMP_parallel_start",
11955 "GOMP_parallel_loop_static_start",
11956 "GOMP_parallel_loop_dynamic_start",
11957 "GOMP_parallel_loop_guided_start",
11958 "GOMP_parallel_loop_runtime_start",
11959 "GOMP_parallel_sections_start",
11963 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11965 struct elf_link_hash_entry *h;
11966 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11967 FALSE, FALSE, TRUE);
11968 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11969 if (htab->params->plt_thread_safe)
11973 stubs_always_before_branch = htab->params->group_size < 0;
11974 if (htab->params->group_size < 0)
11975 stub_group_size = -htab->params->group_size;
11977 stub_group_size = htab->params->group_size;
11979 group_sections (htab, stub_group_size, stubs_always_before_branch);
11984 unsigned int bfd_indx;
11985 asection *stub_sec;
11987 htab->stub_iteration += 1;
11989 for (input_bfd = info->input_bfds, bfd_indx = 0;
11991 input_bfd = input_bfd->link.next, bfd_indx++)
11993 Elf_Internal_Shdr *symtab_hdr;
11995 Elf_Internal_Sym *local_syms = NULL;
11997 if (!is_ppc64_elf (input_bfd))
12000 /* We'll need the symbol table in a second. */
12001 symtab_hdr = &elf_symtab_hdr (input_bfd);
12002 if (symtab_hdr->sh_info == 0)
12005 /* Walk over each section attached to the input bfd. */
12006 for (section = input_bfd->sections;
12008 section = section->next)
12010 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12012 /* If there aren't any relocs, then there's nothing more
12014 if ((section->flags & SEC_RELOC) == 0
12015 || (section->flags & SEC_ALLOC) == 0
12016 || (section->flags & SEC_LOAD) == 0
12017 || (section->flags & SEC_CODE) == 0
12018 || section->reloc_count == 0)
12021 /* If this section is a link-once section that will be
12022 discarded, then don't create any stubs. */
12023 if (section->output_section == NULL
12024 || section->output_section->owner != info->output_bfd)
12027 /* Get the relocs. */
12029 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12030 info->keep_memory);
12031 if (internal_relocs == NULL)
12032 goto error_ret_free_local;
12034 /* Now examine each relocation. */
12035 irela = internal_relocs;
12036 irelaend = irela + section->reloc_count;
12037 for (; irela < irelaend; irela++)
12039 enum elf_ppc64_reloc_type r_type;
12040 unsigned int r_indx;
12041 enum ppc_stub_type stub_type;
12042 struct ppc_stub_hash_entry *stub_entry;
12043 asection *sym_sec, *code_sec;
12044 bfd_vma sym_value, code_value;
12045 bfd_vma destination;
12046 unsigned long local_off;
12047 bfd_boolean ok_dest;
12048 struct ppc_link_hash_entry *hash;
12049 struct ppc_link_hash_entry *fdh;
12050 struct elf_link_hash_entry *h;
12051 Elf_Internal_Sym *sym;
12053 const asection *id_sec;
12054 struct _opd_sec_data *opd;
12055 struct plt_entry *plt_ent;
12057 r_type = ELF64_R_TYPE (irela->r_info);
12058 r_indx = ELF64_R_SYM (irela->r_info);
12060 if (r_type >= R_PPC64_max)
12062 bfd_set_error (bfd_error_bad_value);
12063 goto error_ret_free_internal;
12066 /* Only look for stubs on branch instructions. */
12067 if (r_type != R_PPC64_REL24
12068 && r_type != R_PPC64_REL14
12069 && r_type != R_PPC64_REL14_BRTAKEN
12070 && r_type != R_PPC64_REL14_BRNTAKEN)
12073 /* Now determine the call target, its name, value,
12075 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12076 r_indx, input_bfd))
12077 goto error_ret_free_internal;
12078 hash = (struct ppc_link_hash_entry *) h;
12085 sym_value = sym->st_value;
12088 else if (hash->elf.root.type == bfd_link_hash_defined
12089 || hash->elf.root.type == bfd_link_hash_defweak)
12091 sym_value = hash->elf.root.u.def.value;
12092 if (sym_sec->output_section != NULL)
12095 else if (hash->elf.root.type == bfd_link_hash_undefweak
12096 || hash->elf.root.type == bfd_link_hash_undefined)
12098 /* Recognise an old ABI func code entry sym, and
12099 use the func descriptor sym instead if it is
12101 if (hash->elf.root.root.string[0] == '.'
12102 && (fdh = lookup_fdh (hash, htab)) != NULL)
12104 if (fdh->elf.root.type == bfd_link_hash_defined
12105 || fdh->elf.root.type == bfd_link_hash_defweak)
12107 sym_sec = fdh->elf.root.u.def.section;
12108 sym_value = fdh->elf.root.u.def.value;
12109 if (sym_sec->output_section != NULL)
12118 bfd_set_error (bfd_error_bad_value);
12119 goto error_ret_free_internal;
12126 sym_value += irela->r_addend;
12127 destination = (sym_value
12128 + sym_sec->output_offset
12129 + sym_sec->output_section->vma);
12130 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12135 code_sec = sym_sec;
12136 code_value = sym_value;
12137 opd = get_opd_info (sym_sec);
12142 if (hash == NULL && opd->adjust != NULL)
12144 long adjust = opd->adjust[sym_value / 8];
12147 code_value += adjust;
12148 sym_value += adjust;
12150 dest = opd_entry_value (sym_sec, sym_value,
12151 &code_sec, &code_value, FALSE);
12152 if (dest != (bfd_vma) -1)
12154 destination = dest;
12157 /* Fixup old ABI sym to point at code
12159 hash->elf.root.type = bfd_link_hash_defweak;
12160 hash->elf.root.u.def.section = code_sec;
12161 hash->elf.root.u.def.value = code_value;
12166 /* Determine what (if any) linker stub is needed. */
12168 stub_type = ppc_type_of_stub (section, irela, &hash,
12169 &plt_ent, destination,
12172 if (stub_type != ppc_stub_plt_call)
12174 /* Check whether we need a TOC adjusting stub.
12175 Since the linker pastes together pieces from
12176 different object files when creating the
12177 _init and _fini functions, it may be that a
12178 call to what looks like a local sym is in
12179 fact a call needing a TOC adjustment. */
12180 if (code_sec != NULL
12181 && code_sec->output_section != NULL
12182 && (htab->stub_group[code_sec->id].toc_off
12183 != htab->stub_group[section->id].toc_off)
12184 && (code_sec->has_toc_reloc
12185 || code_sec->makes_toc_func_call))
12186 stub_type = ppc_stub_long_branch_r2off;
12189 if (stub_type == ppc_stub_none)
12192 /* __tls_get_addr calls might be eliminated. */
12193 if (stub_type != ppc_stub_plt_call
12195 && (hash == htab->tls_get_addr
12196 || hash == htab->tls_get_addr_fd)
12197 && section->has_tls_reloc
12198 && irela != internal_relocs)
12200 /* Get tls info. */
12201 unsigned char *tls_mask;
12203 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12204 irela - 1, input_bfd))
12205 goto error_ret_free_internal;
12206 if (*tls_mask != 0)
12210 if (stub_type == ppc_stub_plt_call
12211 && irela + 1 < irelaend
12212 && irela[1].r_offset == irela->r_offset + 4
12213 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12215 if (!tocsave_find (htab, INSERT,
12216 &local_syms, irela + 1, input_bfd))
12217 goto error_ret_free_internal;
12219 else if (stub_type == ppc_stub_plt_call)
12220 stub_type = ppc_stub_plt_call_r2save;
12222 /* Support for grouping stub sections. */
12223 id_sec = htab->stub_group[section->id].link_sec;
12225 /* Get the name of this stub. */
12226 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12228 goto error_ret_free_internal;
12230 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12231 stub_name, FALSE, FALSE);
12232 if (stub_entry != NULL)
12234 /* The proper stub has already been created. */
12236 if (stub_type == ppc_stub_plt_call_r2save)
12237 stub_entry->stub_type = stub_type;
12241 stub_entry = ppc_add_stub (stub_name, section, info);
12242 if (stub_entry == NULL)
12245 error_ret_free_internal:
12246 if (elf_section_data (section)->relocs == NULL)
12247 free (internal_relocs);
12248 error_ret_free_local:
12249 if (local_syms != NULL
12250 && (symtab_hdr->contents
12251 != (unsigned char *) local_syms))
12256 stub_entry->stub_type = stub_type;
12257 if (stub_type != ppc_stub_plt_call
12258 && stub_type != ppc_stub_plt_call_r2save)
12260 stub_entry->target_value = code_value;
12261 stub_entry->target_section = code_sec;
12265 stub_entry->target_value = sym_value;
12266 stub_entry->target_section = sym_sec;
12268 stub_entry->h = hash;
12269 stub_entry->plt_ent = plt_ent;
12270 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12272 if (stub_entry->h != NULL)
12273 htab->stub_globals += 1;
12276 /* We're done with the internal relocs, free them. */
12277 if (elf_section_data (section)->relocs != internal_relocs)
12278 free (internal_relocs);
12281 if (local_syms != NULL
12282 && symtab_hdr->contents != (unsigned char *) local_syms)
12284 if (!info->keep_memory)
12287 symtab_hdr->contents = (unsigned char *) local_syms;
12291 /* We may have added some stubs. Find out the new size of the
12293 for (stub_sec = htab->params->stub_bfd->sections;
12295 stub_sec = stub_sec->next)
12296 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12298 stub_sec->rawsize = stub_sec->size;
12299 stub_sec->size = 0;
12300 stub_sec->reloc_count = 0;
12301 stub_sec->flags &= ~SEC_RELOC;
12304 htab->brlt->size = 0;
12305 htab->brlt->reloc_count = 0;
12306 htab->brlt->flags &= ~SEC_RELOC;
12307 if (htab->relbrlt != NULL)
12308 htab->relbrlt->size = 0;
12310 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12312 if (info->emitrelocations
12313 && htab->glink != NULL && htab->glink->size != 0)
12315 htab->glink->reloc_count = 1;
12316 htab->glink->flags |= SEC_RELOC;
12319 if (htab->glink_eh_frame != NULL
12320 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12321 && htab->glink_eh_frame->output_section->size != 0)
12323 size_t size = 0, align;
12325 for (stub_sec = htab->params->stub_bfd->sections;
12327 stub_sec = stub_sec->next)
12328 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12330 if (htab->glink != NULL && htab->glink->size != 0)
12333 size += sizeof (glink_eh_frame_cie);
12335 align <<= htab->glink_eh_frame->output_section->alignment_power;
12337 size = (size + align) & ~align;
12338 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12339 htab->glink_eh_frame->size = size;
12342 if (htab->params->plt_stub_align != 0)
12343 for (stub_sec = htab->params->stub_bfd->sections;
12345 stub_sec = stub_sec->next)
12346 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12347 stub_sec->size = ((stub_sec->size
12348 + (1 << htab->params->plt_stub_align) - 1)
12349 & (-1 << htab->params->plt_stub_align));
12351 for (stub_sec = htab->params->stub_bfd->sections;
12353 stub_sec = stub_sec->next)
12354 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12355 && stub_sec->rawsize != stub_sec->size)
12358 /* Exit from this loop when no stubs have been added, and no stubs
12359 have changed size. */
12360 if (stub_sec == NULL
12361 && (htab->glink_eh_frame == NULL
12362 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12365 /* Ask the linker to do its stuff. */
12366 (*htab->params->layout_sections_again) ();
12369 maybe_strip_output (info, htab->brlt);
12370 if (htab->glink_eh_frame != NULL)
12371 maybe_strip_output (info, htab->glink_eh_frame);
12376 /* Called after we have determined section placement. If sections
12377 move, we'll be called again. Provide a value for TOCstart. */
12380 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12385 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12386 order. The TOC starts where the first of these sections starts. */
12387 s = bfd_get_section_by_name (obfd, ".got");
12388 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12389 s = bfd_get_section_by_name (obfd, ".toc");
12390 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12391 s = bfd_get_section_by_name (obfd, ".tocbss");
12392 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12393 s = bfd_get_section_by_name (obfd, ".plt");
12394 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12396 /* This may happen for
12397 o references to TOC base (SYM@toc / TOC[tc0]) without a
12399 o bad linker script
12400 o --gc-sections and empty TOC sections
12402 FIXME: Warn user? */
12404 /* Look for a likely section. We probably won't even be
12406 for (s = obfd->sections; s != NULL; s = s->next)
12407 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12409 == (SEC_ALLOC | SEC_SMALL_DATA))
12412 for (s = obfd->sections; s != NULL; s = s->next)
12413 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12414 == (SEC_ALLOC | SEC_SMALL_DATA))
12417 for (s = obfd->sections; s != NULL; s = s->next)
12418 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12422 for (s = obfd->sections; s != NULL; s = s->next)
12423 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12429 TOCstart = s->output_section->vma + s->output_offset;
12431 _bfd_set_gp_value (obfd, TOCstart);
12433 if (info != NULL && s != NULL)
12435 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12439 if (htab->elf.hgot != NULL)
12441 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12442 htab->elf.hgot->root.u.def.section = s;
12447 struct bfd_link_hash_entry *bh = NULL;
12448 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12449 s, TOC_BASE_OFF, NULL, FALSE,
12456 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12457 write out any global entry stubs. */
12460 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12462 struct bfd_link_info *info;
12463 struct ppc_link_hash_table *htab;
12464 struct plt_entry *pent;
12467 if (h->root.type == bfd_link_hash_indirect)
12470 if (!h->pointer_equality_needed)
12473 if (h->def_regular)
12477 htab = ppc_hash_table (info);
12482 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12483 if (pent->plt.offset != (bfd_vma) -1
12484 && pent->addend == 0)
12490 p = s->contents + h->root.u.def.value;
12491 plt = htab->elf.splt;
12492 if (!htab->elf.dynamic_sections_created
12493 || h->dynindx == -1)
12494 plt = htab->elf.iplt;
12495 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12496 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12498 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12500 info->callbacks->einfo
12501 (_("%P: linkage table error against `%T'\n"),
12502 h->root.root.string);
12503 bfd_set_error (bfd_error_bad_value);
12504 htab->stub_error = TRUE;
12507 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12508 if (htab->params->emit_stub_syms)
12510 size_t len = strlen (h->root.root.string);
12511 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12516 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12517 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12520 if (h->root.type == bfd_link_hash_new)
12522 h->root.type = bfd_link_hash_defined;
12523 h->root.u.def.section = s;
12524 h->root.u.def.value = p - s->contents;
12525 h->ref_regular = 1;
12526 h->def_regular = 1;
12527 h->ref_regular_nonweak = 1;
12528 h->forced_local = 1;
12533 if (PPC_HA (off) != 0)
12535 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12538 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12540 bfd_put_32 (s->owner, MTCTR_R12, p);
12542 bfd_put_32 (s->owner, BCTR, p);
12548 /* Build all the stubs associated with the current output file.
12549 The stubs are kept in a hash table attached to the main linker
12550 hash table. This function is called via gldelf64ppc_finish. */
12553 ppc64_elf_build_stubs (struct bfd_link_info *info,
12556 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12557 asection *stub_sec;
12559 int stub_sec_count = 0;
12564 /* Allocate memory to hold the linker stubs. */
12565 for (stub_sec = htab->params->stub_bfd->sections;
12567 stub_sec = stub_sec->next)
12568 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12569 && stub_sec->size != 0)
12571 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12572 if (stub_sec->contents == NULL)
12574 /* We want to check that built size is the same as calculated
12575 size. rawsize is a convenient location to use. */
12576 stub_sec->rawsize = stub_sec->size;
12577 stub_sec->size = 0;
12580 if (htab->glink != NULL && htab->glink->size != 0)
12585 /* Build the .glink plt call stub. */
12586 if (htab->params->emit_stub_syms)
12588 struct elf_link_hash_entry *h;
12589 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12590 TRUE, FALSE, FALSE);
12593 if (h->root.type == bfd_link_hash_new)
12595 h->root.type = bfd_link_hash_defined;
12596 h->root.u.def.section = htab->glink;
12597 h->root.u.def.value = 8;
12598 h->ref_regular = 1;
12599 h->def_regular = 1;
12600 h->ref_regular_nonweak = 1;
12601 h->forced_local = 1;
12605 plt0 = (htab->elf.splt->output_section->vma
12606 + htab->elf.splt->output_offset
12608 if (info->emitrelocations)
12610 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12613 r->r_offset = (htab->glink->output_offset
12614 + htab->glink->output_section->vma);
12615 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12616 r->r_addend = plt0;
12618 p = htab->glink->contents;
12619 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12620 bfd_put_64 (htab->glink->owner, plt0, p);
12624 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12626 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12628 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12630 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12632 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12634 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12636 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12638 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12640 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12642 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12647 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12649 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12651 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12653 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12655 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12657 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12659 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12661 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12663 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12665 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12667 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12669 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12672 bfd_put_32 (htab->glink->owner, BCTR, p);
12674 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12676 bfd_put_32 (htab->glink->owner, NOP, p);
12680 /* Build the .glink lazy link call stubs. */
12682 while (p < htab->glink->contents + htab->glink->rawsize)
12688 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12693 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12695 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12700 bfd_put_32 (htab->glink->owner,
12701 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12706 /* Build .glink global entry stubs. */
12707 if (htab->glink->size > htab->glink->rawsize)
12708 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12711 if (htab->brlt != NULL && htab->brlt->size != 0)
12713 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12715 if (htab->brlt->contents == NULL)
12718 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12720 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12721 htab->relbrlt->size);
12722 if (htab->relbrlt->contents == NULL)
12726 if (htab->glink_eh_frame != NULL
12727 && htab->glink_eh_frame->size != 0)
12730 bfd_byte *last_fde;
12731 size_t last_fde_len, size, align, pad;
12733 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12736 htab->glink_eh_frame->contents = p;
12739 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12741 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12742 /* CIE length (rewrite in case little-endian). */
12743 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12744 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12745 p += sizeof (glink_eh_frame_cie);
12747 for (stub_sec = htab->params->stub_bfd->sections;
12749 stub_sec = stub_sec->next)
12750 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12755 bfd_put_32 (htab->elf.dynobj, 16, p);
12758 val = p - htab->glink_eh_frame->contents;
12759 bfd_put_32 (htab->elf.dynobj, val, p);
12761 /* Offset to stub section. */
12762 val = (stub_sec->output_section->vma
12763 + stub_sec->output_offset);
12764 val -= (htab->glink_eh_frame->output_section->vma
12765 + htab->glink_eh_frame->output_offset);
12766 val -= p - htab->glink_eh_frame->contents;
12767 if (val + 0x80000000 > 0xffffffff)
12769 info->callbacks->einfo
12770 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12774 bfd_put_32 (htab->elf.dynobj, val, p);
12776 /* stub section size. */
12777 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12779 /* Augmentation. */
12784 if (htab->glink != NULL && htab->glink->size != 0)
12789 bfd_put_32 (htab->elf.dynobj, 20, p);
12792 val = p - htab->glink_eh_frame->contents;
12793 bfd_put_32 (htab->elf.dynobj, val, p);
12795 /* Offset to .glink. */
12796 val = (htab->glink->output_section->vma
12797 + htab->glink->output_offset
12799 val -= (htab->glink_eh_frame->output_section->vma
12800 + htab->glink_eh_frame->output_offset);
12801 val -= p - htab->glink_eh_frame->contents;
12802 if (val + 0x80000000 > 0xffffffff)
12804 info->callbacks->einfo
12805 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12806 htab->glink->name);
12809 bfd_put_32 (htab->elf.dynobj, val, p);
12812 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12814 /* Augmentation. */
12817 *p++ = DW_CFA_advance_loc + 1;
12818 *p++ = DW_CFA_register;
12821 *p++ = DW_CFA_advance_loc + 4;
12822 *p++ = DW_CFA_restore_extended;
12825 /* Subsume any padding into the last FDE if user .eh_frame
12826 sections are aligned more than glink_eh_frame. Otherwise any
12827 zero padding will be seen as a terminator. */
12828 size = p - htab->glink_eh_frame->contents;
12830 align <<= htab->glink_eh_frame->output_section->alignment_power;
12832 pad = ((size + align) & ~align) - size;
12833 htab->glink_eh_frame->size = size + pad;
12834 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12837 /* Build the stubs as directed by the stub hash table. */
12838 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12840 if (htab->relbrlt != NULL)
12841 htab->relbrlt->reloc_count = 0;
12843 if (htab->params->plt_stub_align != 0)
12844 for (stub_sec = htab->params->stub_bfd->sections;
12846 stub_sec = stub_sec->next)
12847 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12848 stub_sec->size = ((stub_sec->size
12849 + (1 << htab->params->plt_stub_align) - 1)
12850 & (-1 << htab->params->plt_stub_align));
12852 for (stub_sec = htab->params->stub_bfd->sections;
12854 stub_sec = stub_sec->next)
12855 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12857 stub_sec_count += 1;
12858 if (stub_sec->rawsize != stub_sec->size)
12862 if (stub_sec != NULL
12863 || (htab->glink_eh_frame != NULL
12864 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12866 htab->stub_error = TRUE;
12867 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12870 if (htab->stub_error)
12875 *stats = bfd_malloc (500);
12876 if (*stats == NULL)
12879 sprintf (*stats, _("linker stubs in %u group%s\n"
12881 " toc adjust %lu\n"
12882 " long branch %lu\n"
12883 " long toc adj %lu\n"
12885 " plt call toc %lu\n"
12886 " global entry %lu"),
12888 stub_sec_count == 1 ? "" : "s",
12889 htab->stub_count[ppc_stub_long_branch - 1],
12890 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12891 htab->stub_count[ppc_stub_plt_branch - 1],
12892 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12893 htab->stub_count[ppc_stub_plt_call - 1],
12894 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12895 htab->stub_count[ppc_stub_global_entry - 1]);
12900 /* This function undoes the changes made by add_symbol_adjust. */
12903 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12905 struct ppc_link_hash_entry *eh;
12907 if (h->root.type == bfd_link_hash_indirect)
12910 eh = (struct ppc_link_hash_entry *) h;
12911 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12914 eh->elf.root.type = bfd_link_hash_undefined;
12919 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12921 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12924 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12927 /* What to do when ld finds relocations against symbols defined in
12928 discarded sections. */
12930 static unsigned int
12931 ppc64_elf_action_discarded (asection *sec)
12933 if (strcmp (".opd", sec->name) == 0)
12936 if (strcmp (".toc", sec->name) == 0)
12939 if (strcmp (".toc1", sec->name) == 0)
12942 return _bfd_elf_default_action_discarded (sec);
12945 /* The RELOCATE_SECTION function is called by the ELF backend linker
12946 to handle the relocations for a section.
12948 The relocs are always passed as Rela structures; if the section
12949 actually uses Rel structures, the r_addend field will always be
12952 This function is responsible for adjust the section contents as
12953 necessary, and (if using Rela relocs and generating a
12954 relocatable output file) adjusting the reloc addend as
12957 This function does not have to worry about setting the reloc
12958 address or the reloc symbol index.
12960 LOCAL_SYMS is a pointer to the swapped in local symbols.
12962 LOCAL_SECTIONS is an array giving the section in the input file
12963 corresponding to the st_shndx field of each local symbol.
12965 The global hash table entry for the global symbols can be found
12966 via elf_sym_hashes (input_bfd).
12968 When generating relocatable output, this function must handle
12969 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12970 going to be the section symbol corresponding to the output
12971 section, which means that the addend must be adjusted
12975 ppc64_elf_relocate_section (bfd *output_bfd,
12976 struct bfd_link_info *info,
12978 asection *input_section,
12979 bfd_byte *contents,
12980 Elf_Internal_Rela *relocs,
12981 Elf_Internal_Sym *local_syms,
12982 asection **local_sections)
12984 struct ppc_link_hash_table *htab;
12985 Elf_Internal_Shdr *symtab_hdr;
12986 struct elf_link_hash_entry **sym_hashes;
12987 Elf_Internal_Rela *rel;
12988 Elf_Internal_Rela *relend;
12989 Elf_Internal_Rela outrel;
12991 struct got_entry **local_got_ents;
12993 bfd_boolean ret = TRUE;
12994 bfd_boolean is_opd;
12995 /* Assume 'at' branch hints. */
12996 bfd_boolean is_isa_v2 = TRUE;
12997 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12999 /* Initialize howto table if needed. */
13000 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13003 htab = ppc_hash_table (info);
13007 /* Don't relocate stub sections. */
13008 if (input_section->owner == htab->params->stub_bfd)
13011 BFD_ASSERT (is_ppc64_elf (input_bfd));
13013 local_got_ents = elf_local_got_ents (input_bfd);
13014 TOCstart = elf_gp (output_bfd);
13015 symtab_hdr = &elf_symtab_hdr (input_bfd);
13016 sym_hashes = elf_sym_hashes (input_bfd);
13017 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13020 relend = relocs + input_section->reloc_count;
13021 for (; rel < relend; rel++)
13023 enum elf_ppc64_reloc_type r_type;
13025 bfd_reloc_status_type r;
13026 Elf_Internal_Sym *sym;
13028 struct elf_link_hash_entry *h_elf;
13029 struct ppc_link_hash_entry *h;
13030 struct ppc_link_hash_entry *fdh;
13031 const char *sym_name;
13032 unsigned long r_symndx, toc_symndx;
13033 bfd_vma toc_addend;
13034 unsigned char tls_mask, tls_gd, tls_type;
13035 unsigned char sym_type;
13036 bfd_vma relocation;
13037 bfd_boolean unresolved_reloc;
13038 bfd_boolean warned;
13039 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13042 struct ppc_stub_hash_entry *stub_entry;
13043 bfd_vma max_br_offset;
13045 const Elf_Internal_Rela orig_rel = *rel;
13046 reloc_howto_type *howto;
13047 struct reloc_howto_struct alt_howto;
13049 r_type = ELF64_R_TYPE (rel->r_info);
13050 r_symndx = ELF64_R_SYM (rel->r_info);
13052 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13053 symbol of the previous ADDR64 reloc. The symbol gives us the
13054 proper TOC base to use. */
13055 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13057 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13059 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13065 unresolved_reloc = FALSE;
13068 if (r_symndx < symtab_hdr->sh_info)
13070 /* It's a local symbol. */
13071 struct _opd_sec_data *opd;
13073 sym = local_syms + r_symndx;
13074 sec = local_sections[r_symndx];
13075 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13076 sym_type = ELF64_ST_TYPE (sym->st_info);
13077 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13078 opd = get_opd_info (sec);
13079 if (opd != NULL && opd->adjust != NULL)
13081 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13086 /* If this is a relocation against the opd section sym
13087 and we have edited .opd, adjust the reloc addend so
13088 that ld -r and ld --emit-relocs output is correct.
13089 If it is a reloc against some other .opd symbol,
13090 then the symbol value will be adjusted later. */
13091 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13092 rel->r_addend += adjust;
13094 relocation += adjust;
13100 bfd_boolean ignored;
13102 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13103 r_symndx, symtab_hdr, sym_hashes,
13104 h_elf, sec, relocation,
13105 unresolved_reloc, warned, ignored);
13106 sym_name = h_elf->root.root.string;
13107 sym_type = h_elf->type;
13109 && sec->owner == output_bfd
13110 && strcmp (sec->name, ".opd") == 0)
13112 /* This is a symbol defined in a linker script. All
13113 such are defined in output sections, even those
13114 defined by simple assignment from a symbol defined in
13115 an input section. Transfer the symbol to an
13116 appropriate input .opd section, so that a branch to
13117 this symbol will be mapped to the location specified
13118 by the opd entry. */
13119 struct bfd_link_order *lo;
13120 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13121 if (lo->type == bfd_indirect_link_order)
13123 asection *isec = lo->u.indirect.section;
13124 if (h_elf->root.u.def.value >= isec->output_offset
13125 && h_elf->root.u.def.value < (isec->output_offset
13128 h_elf->root.u.def.value -= isec->output_offset;
13129 h_elf->root.u.def.section = isec;
13136 h = (struct ppc_link_hash_entry *) h_elf;
13138 if (sec != NULL && discarded_section (sec))
13139 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13141 ppc64_elf_howto_table[r_type], 0,
13144 if (info->relocatable)
13147 if (h != NULL && &h->elf == htab->elf.hgot)
13149 relocation = (TOCstart
13150 + htab->stub_group[input_section->id].toc_off);
13151 sec = bfd_abs_section_ptr;
13152 unresolved_reloc = FALSE;
13155 /* TLS optimizations. Replace instruction sequences and relocs
13156 based on information we collected in tls_optimize. We edit
13157 RELOCS so that --emit-relocs will output something sensible
13158 for the final instruction stream. */
13163 tls_mask = h->tls_mask;
13164 else if (local_got_ents != NULL)
13166 struct plt_entry **local_plt = (struct plt_entry **)
13167 (local_got_ents + symtab_hdr->sh_info);
13168 unsigned char *lgot_masks = (unsigned char *)
13169 (local_plt + symtab_hdr->sh_info);
13170 tls_mask = lgot_masks[r_symndx];
13173 && (r_type == R_PPC64_TLS
13174 || r_type == R_PPC64_TLSGD
13175 || r_type == R_PPC64_TLSLD))
13177 /* Check for toc tls entries. */
13178 unsigned char *toc_tls;
13180 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13181 &local_syms, rel, input_bfd))
13185 tls_mask = *toc_tls;
13188 /* Check that tls relocs are used with tls syms, and non-tls
13189 relocs are used with non-tls syms. */
13190 if (r_symndx != STN_UNDEF
13191 && r_type != R_PPC64_NONE
13193 || h->elf.root.type == bfd_link_hash_defined
13194 || h->elf.root.type == bfd_link_hash_defweak)
13195 && (IS_PPC64_TLS_RELOC (r_type)
13196 != (sym_type == STT_TLS
13197 || (sym_type == STT_SECTION
13198 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13201 && (r_type == R_PPC64_TLS
13202 || r_type == R_PPC64_TLSGD
13203 || r_type == R_PPC64_TLSLD))
13204 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13207 info->callbacks->einfo
13208 (!IS_PPC64_TLS_RELOC (r_type)
13209 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13210 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13211 input_bfd, input_section, rel->r_offset,
13212 ppc64_elf_howto_table[r_type]->name,
13216 /* Ensure reloc mapping code below stays sane. */
13217 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13218 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13219 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13220 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13221 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13222 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13223 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13224 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13225 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13226 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13234 case R_PPC64_LO_DS_OPT:
13235 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13236 if ((insn & (0x3f << 26)) != 58u << 26)
13238 insn += (14u << 26) - (58u << 26);
13239 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13240 r_type = R_PPC64_TOC16_LO;
13241 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13244 case R_PPC64_TOC16:
13245 case R_PPC64_TOC16_LO:
13246 case R_PPC64_TOC16_DS:
13247 case R_PPC64_TOC16_LO_DS:
13249 /* Check for toc tls entries. */
13250 unsigned char *toc_tls;
13253 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13254 &local_syms, rel, input_bfd);
13260 tls_mask = *toc_tls;
13261 if (r_type == R_PPC64_TOC16_DS
13262 || r_type == R_PPC64_TOC16_LO_DS)
13265 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13270 /* If we found a GD reloc pair, then we might be
13271 doing a GD->IE transition. */
13274 tls_gd = TLS_TPRELGD;
13275 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13278 else if (retval == 3)
13280 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13288 case R_PPC64_GOT_TPREL16_HI:
13289 case R_PPC64_GOT_TPREL16_HA:
13291 && (tls_mask & TLS_TPREL) == 0)
13293 rel->r_offset -= d_offset;
13294 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13295 r_type = R_PPC64_NONE;
13296 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13300 case R_PPC64_GOT_TPREL16_DS:
13301 case R_PPC64_GOT_TPREL16_LO_DS:
13303 && (tls_mask & TLS_TPREL) == 0)
13306 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13308 insn |= 0x3c0d0000; /* addis 0,13,0 */
13309 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13310 r_type = R_PPC64_TPREL16_HA;
13311 if (toc_symndx != 0)
13313 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13314 rel->r_addend = toc_addend;
13315 /* We changed the symbol. Start over in order to
13316 get h, sym, sec etc. right. */
13321 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13327 && (tls_mask & TLS_TPREL) == 0)
13329 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13330 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13333 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13334 /* Was PPC64_TLS which sits on insn boundary, now
13335 PPC64_TPREL16_LO which is at low-order half-word. */
13336 rel->r_offset += d_offset;
13337 r_type = R_PPC64_TPREL16_LO;
13338 if (toc_symndx != 0)
13340 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13341 rel->r_addend = toc_addend;
13342 /* We changed the symbol. Start over in order to
13343 get h, sym, sec etc. right. */
13348 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13352 case R_PPC64_GOT_TLSGD16_HI:
13353 case R_PPC64_GOT_TLSGD16_HA:
13354 tls_gd = TLS_TPRELGD;
13355 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13359 case R_PPC64_GOT_TLSLD16_HI:
13360 case R_PPC64_GOT_TLSLD16_HA:
13361 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13364 if ((tls_mask & tls_gd) != 0)
13365 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13366 + R_PPC64_GOT_TPREL16_DS);
13369 rel->r_offset -= d_offset;
13370 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13371 r_type = R_PPC64_NONE;
13373 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13377 case R_PPC64_GOT_TLSGD16:
13378 case R_PPC64_GOT_TLSGD16_LO:
13379 tls_gd = TLS_TPRELGD;
13380 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13384 case R_PPC64_GOT_TLSLD16:
13385 case R_PPC64_GOT_TLSLD16_LO:
13386 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13388 unsigned int insn1, insn2, insn3;
13392 offset = (bfd_vma) -1;
13393 /* If not using the newer R_PPC64_TLSGD/LD to mark
13394 __tls_get_addr calls, we must trust that the call
13395 stays with its arg setup insns, ie. that the next
13396 reloc is the __tls_get_addr call associated with
13397 the current reloc. Edit both insns. */
13398 if (input_section->has_tls_get_addr_call
13399 && rel + 1 < relend
13400 && branch_reloc_hash_match (input_bfd, rel + 1,
13401 htab->tls_get_addr,
13402 htab->tls_get_addr_fd))
13403 offset = rel[1].r_offset;
13404 if ((tls_mask & tls_gd) != 0)
13407 insn1 = bfd_get_32 (output_bfd,
13408 contents + rel->r_offset - d_offset);
13409 insn1 &= (1 << 26) - (1 << 2);
13410 insn1 |= 58 << 26; /* ld */
13411 insn2 = 0x7c636a14; /* add 3,3,13 */
13412 if (offset != (bfd_vma) -1)
13413 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13414 if ((tls_mask & TLS_EXPLICIT) == 0)
13415 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13416 + R_PPC64_GOT_TPREL16_DS);
13418 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13419 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13424 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13425 insn2 = 0x38630000; /* addi 3,3,0 */
13428 /* Was an LD reloc. */
13430 sec = local_sections[toc_symndx];
13432 r_symndx < symtab_hdr->sh_info;
13434 if (local_sections[r_symndx] == sec)
13436 if (r_symndx >= symtab_hdr->sh_info)
13437 r_symndx = STN_UNDEF;
13438 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13439 if (r_symndx != STN_UNDEF)
13440 rel->r_addend -= (local_syms[r_symndx].st_value
13441 + sec->output_offset
13442 + sec->output_section->vma);
13444 else if (toc_symndx != 0)
13446 r_symndx = toc_symndx;
13447 rel->r_addend = toc_addend;
13449 r_type = R_PPC64_TPREL16_HA;
13450 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13451 if (offset != (bfd_vma) -1)
13453 rel[1].r_info = ELF64_R_INFO (r_symndx,
13454 R_PPC64_TPREL16_LO);
13455 rel[1].r_offset = offset + d_offset;
13456 rel[1].r_addend = rel->r_addend;
13459 bfd_put_32 (output_bfd, insn1,
13460 contents + rel->r_offset - d_offset);
13461 if (offset != (bfd_vma) -1)
13463 insn3 = bfd_get_32 (output_bfd,
13464 contents + offset + 4);
13466 || insn3 == CROR_151515 || insn3 == CROR_313131)
13468 rel[1].r_offset += 4;
13469 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13472 bfd_put_32 (output_bfd, insn2, contents + offset);
13474 if ((tls_mask & tls_gd) == 0
13475 && (tls_gd == 0 || toc_symndx != 0))
13477 /* We changed the symbol. Start over in order
13478 to get h, sym, sec etc. right. */
13485 case R_PPC64_TLSGD:
13486 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13488 unsigned int insn2, insn3;
13489 bfd_vma offset = rel->r_offset;
13491 if ((tls_mask & TLS_TPRELGD) != 0)
13494 r_type = R_PPC64_NONE;
13495 insn2 = 0x7c636a14; /* add 3,3,13 */
13500 if (toc_symndx != 0)
13502 r_symndx = toc_symndx;
13503 rel->r_addend = toc_addend;
13505 r_type = R_PPC64_TPREL16_LO;
13506 rel->r_offset = offset + d_offset;
13507 insn2 = 0x38630000; /* addi 3,3,0 */
13509 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13510 /* Zap the reloc on the _tls_get_addr call too. */
13511 BFD_ASSERT (offset == rel[1].r_offset);
13512 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13513 insn3 = bfd_get_32 (output_bfd,
13514 contents + offset + 4);
13516 || insn3 == CROR_151515 || insn3 == CROR_313131)
13518 rel->r_offset += 4;
13519 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13522 bfd_put_32 (output_bfd, insn2, contents + offset);
13523 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13531 case R_PPC64_TLSLD:
13532 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13534 unsigned int insn2, insn3;
13535 bfd_vma offset = rel->r_offset;
13538 sec = local_sections[toc_symndx];
13540 r_symndx < symtab_hdr->sh_info;
13542 if (local_sections[r_symndx] == sec)
13544 if (r_symndx >= symtab_hdr->sh_info)
13545 r_symndx = STN_UNDEF;
13546 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13547 if (r_symndx != STN_UNDEF)
13548 rel->r_addend -= (local_syms[r_symndx].st_value
13549 + sec->output_offset
13550 + sec->output_section->vma);
13552 r_type = R_PPC64_TPREL16_LO;
13553 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13554 rel->r_offset = offset + d_offset;
13555 /* Zap the reloc on the _tls_get_addr call too. */
13556 BFD_ASSERT (offset == rel[1].r_offset);
13557 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13558 insn2 = 0x38630000; /* addi 3,3,0 */
13559 insn3 = bfd_get_32 (output_bfd,
13560 contents + offset + 4);
13562 || insn3 == CROR_151515 || insn3 == CROR_313131)
13564 rel->r_offset += 4;
13565 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13568 bfd_put_32 (output_bfd, insn2, contents + offset);
13574 case R_PPC64_DTPMOD64:
13575 if (rel + 1 < relend
13576 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13577 && rel[1].r_offset == rel->r_offset + 8)
13579 if ((tls_mask & TLS_GD) == 0)
13581 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13582 if ((tls_mask & TLS_TPRELGD) != 0)
13583 r_type = R_PPC64_TPREL64;
13586 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13587 r_type = R_PPC64_NONE;
13589 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13594 if ((tls_mask & TLS_LD) == 0)
13596 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13597 r_type = R_PPC64_NONE;
13598 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13603 case R_PPC64_TPREL64:
13604 if ((tls_mask & TLS_TPREL) == 0)
13606 r_type = R_PPC64_NONE;
13607 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13611 case R_PPC64_REL16_HA:
13612 /* If we are generating a non-PIC executable, edit
13613 . 0: addis 2,12,.TOC.-0b@ha
13614 . addi 2,2,.TOC.-0b@l
13615 used by ELFv2 global entry points to set up r2, to
13618 if .TOC. is in range. */
13620 && !info->traditional_format
13621 && h != NULL && &h->elf == htab->elf.hgot
13622 && rel + 1 < relend
13623 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13624 && rel[1].r_offset == rel->r_offset + 4
13625 && rel[1].r_addend == rel->r_addend + 4
13626 && relocation + 0x80008000 <= 0xffffffff)
13628 unsigned int insn1, insn2;
13629 bfd_vma offset = rel->r_offset - d_offset;
13630 insn1 = bfd_get_32 (output_bfd, contents + offset);
13631 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13632 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13633 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13635 r_type = R_PPC64_ADDR16_HA;
13636 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13637 rel->r_addend -= d_offset;
13638 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13639 rel[1].r_addend -= d_offset + 4;
13640 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13646 /* Handle other relocations that tweak non-addend part of insn. */
13648 max_br_offset = 1 << 25;
13649 addend = rel->r_addend;
13650 reloc_dest = DEST_NORMAL;
13656 case R_PPC64_TOCSAVE:
13657 if (relocation + addend == (rel->r_offset
13658 + input_section->output_offset
13659 + input_section->output_section->vma)
13660 && tocsave_find (htab, NO_INSERT,
13661 &local_syms, rel, input_bfd))
13663 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13665 || insn == CROR_151515 || insn == CROR_313131)
13666 bfd_put_32 (input_bfd,
13667 STD_R2_0R1 + STK_TOC (htab),
13668 contents + rel->r_offset);
13672 /* Branch taken prediction relocations. */
13673 case R_PPC64_ADDR14_BRTAKEN:
13674 case R_PPC64_REL14_BRTAKEN:
13675 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13678 /* Branch not taken prediction relocations. */
13679 case R_PPC64_ADDR14_BRNTAKEN:
13680 case R_PPC64_REL14_BRNTAKEN:
13681 insn |= bfd_get_32 (output_bfd,
13682 contents + rel->r_offset) & ~(0x01 << 21);
13685 case R_PPC64_REL14:
13686 max_br_offset = 1 << 15;
13689 case R_PPC64_REL24:
13690 /* Calls to functions with a different TOC, such as calls to
13691 shared objects, need to alter the TOC pointer. This is
13692 done using a linkage stub. A REL24 branching to these
13693 linkage stubs needs to be followed by a nop, as the nop
13694 will be replaced with an instruction to restore the TOC
13699 && h->oh->is_func_descriptor)
13700 fdh = ppc_follow_link (h->oh);
13701 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13703 if (stub_entry != NULL
13704 && (stub_entry->stub_type == ppc_stub_plt_call
13705 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13706 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13707 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13709 bfd_boolean can_plt_call = FALSE;
13711 /* All of these stubs will modify r2, so there must be a
13712 branch and link followed by a nop. The nop is
13713 replaced by an insn to restore r2. */
13714 if (rel->r_offset + 8 <= input_section->size)
13718 br = bfd_get_32 (input_bfd,
13719 contents + rel->r_offset);
13724 nop = bfd_get_32 (input_bfd,
13725 contents + rel->r_offset + 4);
13727 || nop == CROR_151515 || nop == CROR_313131)
13730 && (h == htab->tls_get_addr_fd
13731 || h == htab->tls_get_addr)
13732 && !htab->params->no_tls_get_addr_opt)
13734 /* Special stub used, leave nop alone. */
13737 bfd_put_32 (input_bfd,
13738 LD_R2_0R1 + STK_TOC (htab),
13739 contents + rel->r_offset + 4);
13740 can_plt_call = TRUE;
13745 if (!can_plt_call && h != NULL)
13747 const char *name = h->elf.root.root.string;
13752 if (strncmp (name, "__libc_start_main", 17) == 0
13753 && (name[17] == 0 || name[17] == '@'))
13755 /* Allow crt1 branch to go via a toc adjusting
13756 stub. Other calls that never return could do
13757 the same, if we could detect such. */
13758 can_plt_call = TRUE;
13764 /* g++ as of 20130507 emits self-calls without a
13765 following nop. This is arguably wrong since we
13766 have conflicting information. On the one hand a
13767 global symbol and on the other a local call
13768 sequence, but don't error for this special case.
13769 It isn't possible to cheaply verify we have
13770 exactly such a call. Allow all calls to the same
13772 asection *code_sec = sec;
13774 if (get_opd_info (sec) != NULL)
13776 bfd_vma off = (relocation + addend
13777 - sec->output_section->vma
13778 - sec->output_offset);
13780 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13782 if (code_sec == input_section)
13783 can_plt_call = TRUE;
13788 info->callbacks->einfo
13789 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13790 "recompile with -fPIC\n"),
13791 input_bfd, input_section, rel->r_offset, sym_name);
13793 bfd_set_error (bfd_error_bad_value);
13798 && (stub_entry->stub_type == ppc_stub_plt_call
13799 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13800 unresolved_reloc = FALSE;
13803 if ((stub_entry == NULL
13804 || stub_entry->stub_type == ppc_stub_long_branch
13805 || stub_entry->stub_type == ppc_stub_plt_branch)
13806 && get_opd_info (sec) != NULL)
13808 /* The branch destination is the value of the opd entry. */
13809 bfd_vma off = (relocation + addend
13810 - sec->output_section->vma
13811 - sec->output_offset);
13812 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13813 if (dest != (bfd_vma) -1)
13817 reloc_dest = DEST_OPD;
13821 /* If the branch is out of reach we ought to have a long
13823 from = (rel->r_offset
13824 + input_section->output_offset
13825 + input_section->output_section->vma);
13827 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13831 if (stub_entry != NULL
13832 && (stub_entry->stub_type == ppc_stub_long_branch
13833 || stub_entry->stub_type == ppc_stub_plt_branch)
13834 && (r_type == R_PPC64_ADDR14_BRTAKEN
13835 || r_type == R_PPC64_ADDR14_BRNTAKEN
13836 || (relocation + addend - from + max_br_offset
13837 < 2 * max_br_offset)))
13838 /* Don't use the stub if this branch is in range. */
13841 if (stub_entry != NULL)
13843 /* Munge up the value and addend so that we call the stub
13844 rather than the procedure directly. */
13845 relocation = (stub_entry->stub_offset
13846 + stub_entry->stub_sec->output_offset
13847 + stub_entry->stub_sec->output_section->vma);
13849 reloc_dest = DEST_STUB;
13851 if ((stub_entry->stub_type == ppc_stub_plt_call
13852 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13853 && (ALWAYS_EMIT_R2SAVE
13854 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13855 && rel + 1 < relend
13856 && rel[1].r_offset == rel->r_offset + 4
13857 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13865 /* Set 'a' bit. This is 0b00010 in BO field for branch
13866 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13867 for branch on CTR insns (BO == 1a00t or 1a01t). */
13868 if ((insn & (0x14 << 21)) == (0x04 << 21))
13869 insn |= 0x02 << 21;
13870 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13871 insn |= 0x08 << 21;
13877 /* Invert 'y' bit if not the default. */
13878 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13879 insn ^= 0x01 << 21;
13882 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13885 /* NOP out calls to undefined weak functions.
13886 We can thus call a weak function without first
13887 checking whether the function is defined. */
13889 && h->elf.root.type == bfd_link_hash_undefweak
13890 && h->elf.dynindx == -1
13891 && r_type == R_PPC64_REL24
13895 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13901 /* Set `addend'. */
13906 info->callbacks->einfo
13907 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13908 input_bfd, (int) r_type, sym_name);
13910 bfd_set_error (bfd_error_bad_value);
13916 case R_PPC64_TLSGD:
13917 case R_PPC64_TLSLD:
13918 case R_PPC64_TOCSAVE:
13919 case R_PPC64_GNU_VTINHERIT:
13920 case R_PPC64_GNU_VTENTRY:
13923 /* GOT16 relocations. Like an ADDR16 using the symbol's
13924 address in the GOT as relocation value instead of the
13925 symbol's value itself. Also, create a GOT entry for the
13926 symbol and put the symbol value there. */
13927 case R_PPC64_GOT_TLSGD16:
13928 case R_PPC64_GOT_TLSGD16_LO:
13929 case R_PPC64_GOT_TLSGD16_HI:
13930 case R_PPC64_GOT_TLSGD16_HA:
13931 tls_type = TLS_TLS | TLS_GD;
13934 case R_PPC64_GOT_TLSLD16:
13935 case R_PPC64_GOT_TLSLD16_LO:
13936 case R_PPC64_GOT_TLSLD16_HI:
13937 case R_PPC64_GOT_TLSLD16_HA:
13938 tls_type = TLS_TLS | TLS_LD;
13941 case R_PPC64_GOT_TPREL16_DS:
13942 case R_PPC64_GOT_TPREL16_LO_DS:
13943 case R_PPC64_GOT_TPREL16_HI:
13944 case R_PPC64_GOT_TPREL16_HA:
13945 tls_type = TLS_TLS | TLS_TPREL;
13948 case R_PPC64_GOT_DTPREL16_DS:
13949 case R_PPC64_GOT_DTPREL16_LO_DS:
13950 case R_PPC64_GOT_DTPREL16_HI:
13951 case R_PPC64_GOT_DTPREL16_HA:
13952 tls_type = TLS_TLS | TLS_DTPREL;
13955 case R_PPC64_GOT16:
13956 case R_PPC64_GOT16_LO:
13957 case R_PPC64_GOT16_HI:
13958 case R_PPC64_GOT16_HA:
13959 case R_PPC64_GOT16_DS:
13960 case R_PPC64_GOT16_LO_DS:
13963 /* Relocation is to the entry for this symbol in the global
13968 unsigned long indx = 0;
13969 struct got_entry *ent;
13971 if (tls_type == (TLS_TLS | TLS_LD)
13973 || !h->elf.def_dynamic))
13974 ent = ppc64_tlsld_got (input_bfd);
13980 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13981 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13984 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13985 /* This is actually a static link, or it is a
13986 -Bsymbolic link and the symbol is defined
13987 locally, or the symbol was forced to be local
13988 because of a version file. */
13992 BFD_ASSERT (h->elf.dynindx != -1);
13993 indx = h->elf.dynindx;
13994 unresolved_reloc = FALSE;
13996 ent = h->elf.got.glist;
14000 if (local_got_ents == NULL)
14002 ent = local_got_ents[r_symndx];
14005 for (; ent != NULL; ent = ent->next)
14006 if (ent->addend == orig_rel.r_addend
14007 && ent->owner == input_bfd
14008 && ent->tls_type == tls_type)
14014 if (ent->is_indirect)
14015 ent = ent->got.ent;
14016 offp = &ent->got.offset;
14017 got = ppc64_elf_tdata (ent->owner)->got;
14021 /* The offset must always be a multiple of 8. We use the
14022 least significant bit to record whether we have already
14023 processed this entry. */
14025 if ((off & 1) != 0)
14029 /* Generate relocs for the dynamic linker, except in
14030 the case of TLSLD where we'll use one entry per
14038 ? h->elf.type == STT_GNU_IFUNC
14039 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14041 relgot = htab->elf.irelplt;
14042 else if ((info->shared || indx != 0)
14044 || (tls_type == (TLS_TLS | TLS_LD)
14045 && !h->elf.def_dynamic)
14046 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14047 || h->elf.root.type != bfd_link_hash_undefweak))
14048 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14049 if (relgot != NULL)
14051 outrel.r_offset = (got->output_section->vma
14052 + got->output_offset
14054 outrel.r_addend = addend;
14055 if (tls_type & (TLS_LD | TLS_GD))
14057 outrel.r_addend = 0;
14058 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14059 if (tls_type == (TLS_TLS | TLS_GD))
14061 loc = relgot->contents;
14062 loc += (relgot->reloc_count++
14063 * sizeof (Elf64_External_Rela));
14064 bfd_elf64_swap_reloca_out (output_bfd,
14066 outrel.r_offset += 8;
14067 outrel.r_addend = addend;
14069 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14072 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14073 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14074 else if (tls_type == (TLS_TLS | TLS_TPREL))
14075 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14076 else if (indx != 0)
14077 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14081 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14083 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14085 /* Write the .got section contents for the sake
14087 loc = got->contents + off;
14088 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14092 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14094 outrel.r_addend += relocation;
14095 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14096 outrel.r_addend -= htab->elf.tls_sec->vma;
14098 loc = relgot->contents;
14099 loc += (relgot->reloc_count++
14100 * sizeof (Elf64_External_Rela));
14101 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14104 /* Init the .got section contents here if we're not
14105 emitting a reloc. */
14108 relocation += addend;
14109 if (tls_type == (TLS_TLS | TLS_LD))
14111 else if (tls_type != 0)
14113 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14114 if (tls_type == (TLS_TLS | TLS_TPREL))
14115 relocation += DTP_OFFSET - TP_OFFSET;
14117 if (tls_type == (TLS_TLS | TLS_GD))
14119 bfd_put_64 (output_bfd, relocation,
14120 got->contents + off + 8);
14125 bfd_put_64 (output_bfd, relocation,
14126 got->contents + off);
14130 if (off >= (bfd_vma) -2)
14133 relocation = got->output_section->vma + got->output_offset + off;
14134 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14138 case R_PPC64_PLT16_HA:
14139 case R_PPC64_PLT16_HI:
14140 case R_PPC64_PLT16_LO:
14141 case R_PPC64_PLT32:
14142 case R_PPC64_PLT64:
14143 /* Relocation is to the entry for this symbol in the
14144 procedure linkage table. */
14146 /* Resolve a PLT reloc against a local symbol directly,
14147 without using the procedure linkage table. */
14151 /* It's possible that we didn't make a PLT entry for this
14152 symbol. This happens when statically linking PIC code,
14153 or when using -Bsymbolic. Go find a match if there is a
14155 if (htab->elf.splt != NULL)
14157 struct plt_entry *ent;
14158 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14159 if (ent->plt.offset != (bfd_vma) -1
14160 && ent->addend == orig_rel.r_addend)
14162 relocation = (htab->elf.splt->output_section->vma
14163 + htab->elf.splt->output_offset
14164 + ent->plt.offset);
14165 unresolved_reloc = FALSE;
14172 /* Relocation value is TOC base. */
14173 relocation = TOCstart;
14174 if (r_symndx == STN_UNDEF)
14175 relocation += htab->stub_group[input_section->id].toc_off;
14176 else if (unresolved_reloc)
14178 else if (sec != NULL && sec->id <= htab->top_id)
14179 relocation += htab->stub_group[sec->id].toc_off;
14181 unresolved_reloc = TRUE;
14184 /* TOC16 relocs. We want the offset relative to the TOC base,
14185 which is the address of the start of the TOC plus 0x8000.
14186 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14188 case R_PPC64_TOC16:
14189 case R_PPC64_TOC16_LO:
14190 case R_PPC64_TOC16_HI:
14191 case R_PPC64_TOC16_DS:
14192 case R_PPC64_TOC16_LO_DS:
14193 case R_PPC64_TOC16_HA:
14194 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14197 /* Relocate against the beginning of the section. */
14198 case R_PPC64_SECTOFF:
14199 case R_PPC64_SECTOFF_LO:
14200 case R_PPC64_SECTOFF_HI:
14201 case R_PPC64_SECTOFF_DS:
14202 case R_PPC64_SECTOFF_LO_DS:
14203 case R_PPC64_SECTOFF_HA:
14205 addend -= sec->output_section->vma;
14208 case R_PPC64_REL16:
14209 case R_PPC64_REL16_LO:
14210 case R_PPC64_REL16_HI:
14211 case R_PPC64_REL16_HA:
14214 case R_PPC64_REL14:
14215 case R_PPC64_REL14_BRNTAKEN:
14216 case R_PPC64_REL14_BRTAKEN:
14217 case R_PPC64_REL24:
14220 case R_PPC64_TPREL16:
14221 case R_PPC64_TPREL16_LO:
14222 case R_PPC64_TPREL16_HI:
14223 case R_PPC64_TPREL16_HA:
14224 case R_PPC64_TPREL16_DS:
14225 case R_PPC64_TPREL16_LO_DS:
14226 case R_PPC64_TPREL16_HIGH:
14227 case R_PPC64_TPREL16_HIGHA:
14228 case R_PPC64_TPREL16_HIGHER:
14229 case R_PPC64_TPREL16_HIGHERA:
14230 case R_PPC64_TPREL16_HIGHEST:
14231 case R_PPC64_TPREL16_HIGHESTA:
14233 && h->elf.root.type == bfd_link_hash_undefweak
14234 && h->elf.dynindx == -1)
14236 /* Make this relocation against an undefined weak symbol
14237 resolve to zero. This is really just a tweak, since
14238 code using weak externs ought to check that they are
14239 defined before using them. */
14240 bfd_byte *p = contents + rel->r_offset - d_offset;
14242 insn = bfd_get_32 (output_bfd, p);
14243 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14245 bfd_put_32 (output_bfd, insn, p);
14248 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14250 /* The TPREL16 relocs shouldn't really be used in shared
14251 libs as they will result in DT_TEXTREL being set, but
14252 support them anyway. */
14256 case R_PPC64_DTPREL16:
14257 case R_PPC64_DTPREL16_LO:
14258 case R_PPC64_DTPREL16_HI:
14259 case R_PPC64_DTPREL16_HA:
14260 case R_PPC64_DTPREL16_DS:
14261 case R_PPC64_DTPREL16_LO_DS:
14262 case R_PPC64_DTPREL16_HIGH:
14263 case R_PPC64_DTPREL16_HIGHA:
14264 case R_PPC64_DTPREL16_HIGHER:
14265 case R_PPC64_DTPREL16_HIGHERA:
14266 case R_PPC64_DTPREL16_HIGHEST:
14267 case R_PPC64_DTPREL16_HIGHESTA:
14268 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14271 case R_PPC64_ADDR64_LOCAL:
14272 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14277 case R_PPC64_DTPMOD64:
14282 case R_PPC64_TPREL64:
14283 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14286 case R_PPC64_DTPREL64:
14287 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14290 /* Relocations that may need to be propagated if this is a
14292 case R_PPC64_REL30:
14293 case R_PPC64_REL32:
14294 case R_PPC64_REL64:
14295 case R_PPC64_ADDR14:
14296 case R_PPC64_ADDR14_BRNTAKEN:
14297 case R_PPC64_ADDR14_BRTAKEN:
14298 case R_PPC64_ADDR16:
14299 case R_PPC64_ADDR16_DS:
14300 case R_PPC64_ADDR16_HA:
14301 case R_PPC64_ADDR16_HI:
14302 case R_PPC64_ADDR16_HIGH:
14303 case R_PPC64_ADDR16_HIGHA:
14304 case R_PPC64_ADDR16_HIGHER:
14305 case R_PPC64_ADDR16_HIGHERA:
14306 case R_PPC64_ADDR16_HIGHEST:
14307 case R_PPC64_ADDR16_HIGHESTA:
14308 case R_PPC64_ADDR16_LO:
14309 case R_PPC64_ADDR16_LO_DS:
14310 case R_PPC64_ADDR24:
14311 case R_PPC64_ADDR32:
14312 case R_PPC64_ADDR64:
14313 case R_PPC64_UADDR16:
14314 case R_PPC64_UADDR32:
14315 case R_PPC64_UADDR64:
14317 if ((input_section->flags & SEC_ALLOC) == 0)
14320 if (NO_OPD_RELOCS && is_opd)
14325 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14326 || h->elf.root.type != bfd_link_hash_undefweak)
14327 && (must_be_dyn_reloc (info, r_type)
14328 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14329 || (ELIMINATE_COPY_RELOCS
14332 && h->elf.dynindx != -1
14333 && !h->elf.non_got_ref
14334 && !h->elf.def_regular)
14337 ? h->elf.type == STT_GNU_IFUNC
14338 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14340 bfd_boolean skip, relocate;
14344 /* When generating a dynamic object, these relocations
14345 are copied into the output file to be resolved at run
14351 out_off = _bfd_elf_section_offset (output_bfd, info,
14352 input_section, rel->r_offset);
14353 if (out_off == (bfd_vma) -1)
14355 else if (out_off == (bfd_vma) -2)
14356 skip = TRUE, relocate = TRUE;
14357 out_off += (input_section->output_section->vma
14358 + input_section->output_offset);
14359 outrel.r_offset = out_off;
14360 outrel.r_addend = rel->r_addend;
14362 /* Optimize unaligned reloc use. */
14363 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14364 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14365 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14366 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14367 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14368 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14369 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14370 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14371 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14374 memset (&outrel, 0, sizeof outrel);
14375 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14377 && r_type != R_PPC64_TOC)
14379 BFD_ASSERT (h->elf.dynindx != -1);
14380 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14384 /* This symbol is local, or marked to become local,
14385 or this is an opd section reloc which must point
14386 at a local function. */
14387 outrel.r_addend += relocation;
14388 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14390 if (is_opd && h != NULL)
14392 /* Lie about opd entries. This case occurs
14393 when building shared libraries and we
14394 reference a function in another shared
14395 lib. The same thing happens for a weak
14396 definition in an application that's
14397 overridden by a strong definition in a
14398 shared lib. (I believe this is a generic
14399 bug in binutils handling of weak syms.)
14400 In these cases we won't use the opd
14401 entry in this lib. */
14402 unresolved_reloc = FALSE;
14405 && r_type == R_PPC64_ADDR64
14407 ? h->elf.type == STT_GNU_IFUNC
14408 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14409 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14412 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14414 /* We need to relocate .opd contents for ld.so.
14415 Prelink also wants simple and consistent rules
14416 for relocs. This make all RELATIVE relocs have
14417 *r_offset equal to r_addend. */
14426 ? h->elf.type == STT_GNU_IFUNC
14427 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14429 info->callbacks->einfo
14430 (_("%P: %H: %s for indirect "
14431 "function `%T' unsupported\n"),
14432 input_bfd, input_section, rel->r_offset,
14433 ppc64_elf_howto_table[r_type]->name,
14437 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14439 else if (sec == NULL || sec->owner == NULL)
14441 bfd_set_error (bfd_error_bad_value);
14448 osec = sec->output_section;
14449 indx = elf_section_data (osec)->dynindx;
14453 if ((osec->flags & SEC_READONLY) == 0
14454 && htab->elf.data_index_section != NULL)
14455 osec = htab->elf.data_index_section;
14457 osec = htab->elf.text_index_section;
14458 indx = elf_section_data (osec)->dynindx;
14460 BFD_ASSERT (indx != 0);
14462 /* We are turning this relocation into one
14463 against a section symbol, so subtract out
14464 the output section's address but not the
14465 offset of the input section in the output
14467 outrel.r_addend -= osec->vma;
14470 outrel.r_info = ELF64_R_INFO (indx, r_type);
14474 sreloc = elf_section_data (input_section)->sreloc;
14476 ? h->elf.type == STT_GNU_IFUNC
14477 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14478 sreloc = htab->elf.irelplt;
14479 if (sreloc == NULL)
14482 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14485 loc = sreloc->contents;
14486 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14487 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14489 /* If this reloc is against an external symbol, it will
14490 be computed at runtime, so there's no need to do
14491 anything now. However, for the sake of prelink ensure
14492 that the section contents are a known value. */
14495 unresolved_reloc = FALSE;
14496 /* The value chosen here is quite arbitrary as ld.so
14497 ignores section contents except for the special
14498 case of .opd where the contents might be accessed
14499 before relocation. Choose zero, as that won't
14500 cause reloc overflow. */
14503 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14504 to improve backward compatibility with older
14506 if (r_type == R_PPC64_ADDR64)
14507 addend = outrel.r_addend;
14508 /* Adjust pc_relative relocs to have zero in *r_offset. */
14509 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14510 addend = (input_section->output_section->vma
14511 + input_section->output_offset
14518 case R_PPC64_GLOB_DAT:
14519 case R_PPC64_JMP_SLOT:
14520 case R_PPC64_JMP_IREL:
14521 case R_PPC64_RELATIVE:
14522 /* We shouldn't ever see these dynamic relocs in relocatable
14524 /* Fall through. */
14526 case R_PPC64_PLTGOT16:
14527 case R_PPC64_PLTGOT16_DS:
14528 case R_PPC64_PLTGOT16_HA:
14529 case R_PPC64_PLTGOT16_HI:
14530 case R_PPC64_PLTGOT16_LO:
14531 case R_PPC64_PLTGOT16_LO_DS:
14532 case R_PPC64_PLTREL32:
14533 case R_PPC64_PLTREL64:
14534 /* These ones haven't been implemented yet. */
14536 info->callbacks->einfo
14537 (_("%P: %B: %s is not supported for `%T'\n"),
14539 ppc64_elf_howto_table[r_type]->name, sym_name);
14541 bfd_set_error (bfd_error_invalid_operation);
14546 /* Multi-instruction sequences that access the TOC can be
14547 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14548 to nop; addi rb,r2,x; */
14554 case R_PPC64_GOT_TLSLD16_HI:
14555 case R_PPC64_GOT_TLSGD16_HI:
14556 case R_PPC64_GOT_TPREL16_HI:
14557 case R_PPC64_GOT_DTPREL16_HI:
14558 case R_PPC64_GOT16_HI:
14559 case R_PPC64_TOC16_HI:
14560 /* These relocs would only be useful if building up an
14561 offset to later add to r2, perhaps in an indexed
14562 addressing mode instruction. Don't try to optimize.
14563 Unfortunately, the possibility of someone building up an
14564 offset like this or even with the HA relocs, means that
14565 we need to check the high insn when optimizing the low
14569 case R_PPC64_GOT_TLSLD16_HA:
14570 case R_PPC64_GOT_TLSGD16_HA:
14571 case R_PPC64_GOT_TPREL16_HA:
14572 case R_PPC64_GOT_DTPREL16_HA:
14573 case R_PPC64_GOT16_HA:
14574 case R_PPC64_TOC16_HA:
14575 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14576 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14578 bfd_byte *p = contents + (rel->r_offset & ~3);
14579 bfd_put_32 (input_bfd, NOP, p);
14583 case R_PPC64_GOT_TLSLD16_LO:
14584 case R_PPC64_GOT_TLSGD16_LO:
14585 case R_PPC64_GOT_TPREL16_LO_DS:
14586 case R_PPC64_GOT_DTPREL16_LO_DS:
14587 case R_PPC64_GOT16_LO:
14588 case R_PPC64_GOT16_LO_DS:
14589 case R_PPC64_TOC16_LO:
14590 case R_PPC64_TOC16_LO_DS:
14591 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14592 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14594 bfd_byte *p = contents + (rel->r_offset & ~3);
14595 insn = bfd_get_32 (input_bfd, p);
14596 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14598 /* Transform addic to addi when we change reg. */
14599 insn &= ~((0x3f << 26) | (0x1f << 16));
14600 insn |= (14u << 26) | (2 << 16);
14604 insn &= ~(0x1f << 16);
14607 bfd_put_32 (input_bfd, insn, p);
14612 /* Do any further special processing. */
14613 howto = ppc64_elf_howto_table[(int) r_type];
14619 case R_PPC64_REL16_HA:
14620 case R_PPC64_ADDR16_HA:
14621 case R_PPC64_ADDR16_HIGHA:
14622 case R_PPC64_ADDR16_HIGHERA:
14623 case R_PPC64_ADDR16_HIGHESTA:
14624 case R_PPC64_TOC16_HA:
14625 case R_PPC64_SECTOFF_HA:
14626 case R_PPC64_TPREL16_HA:
14627 case R_PPC64_TPREL16_HIGHA:
14628 case R_PPC64_TPREL16_HIGHERA:
14629 case R_PPC64_TPREL16_HIGHESTA:
14630 case R_PPC64_DTPREL16_HA:
14631 case R_PPC64_DTPREL16_HIGHA:
14632 case R_PPC64_DTPREL16_HIGHERA:
14633 case R_PPC64_DTPREL16_HIGHESTA:
14634 /* It's just possible that this symbol is a weak symbol
14635 that's not actually defined anywhere. In that case,
14636 'sec' would be NULL, and we should leave the symbol
14637 alone (it will be set to zero elsewhere in the link). */
14642 case R_PPC64_GOT16_HA:
14643 case R_PPC64_PLTGOT16_HA:
14644 case R_PPC64_PLT16_HA:
14645 case R_PPC64_GOT_TLSGD16_HA:
14646 case R_PPC64_GOT_TLSLD16_HA:
14647 case R_PPC64_GOT_TPREL16_HA:
14648 case R_PPC64_GOT_DTPREL16_HA:
14649 /* Add 0x10000 if sign bit in 0:15 is set.
14650 Bits 0:15 are not used. */
14654 case R_PPC64_ADDR16_DS:
14655 case R_PPC64_ADDR16_LO_DS:
14656 case R_PPC64_GOT16_DS:
14657 case R_PPC64_GOT16_LO_DS:
14658 case R_PPC64_PLT16_LO_DS:
14659 case R_PPC64_SECTOFF_DS:
14660 case R_PPC64_SECTOFF_LO_DS:
14661 case R_PPC64_TOC16_DS:
14662 case R_PPC64_TOC16_LO_DS:
14663 case R_PPC64_PLTGOT16_DS:
14664 case R_PPC64_PLTGOT16_LO_DS:
14665 case R_PPC64_GOT_TPREL16_DS:
14666 case R_PPC64_GOT_TPREL16_LO_DS:
14667 case R_PPC64_GOT_DTPREL16_DS:
14668 case R_PPC64_GOT_DTPREL16_LO_DS:
14669 case R_PPC64_TPREL16_DS:
14670 case R_PPC64_TPREL16_LO_DS:
14671 case R_PPC64_DTPREL16_DS:
14672 case R_PPC64_DTPREL16_LO_DS:
14673 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14675 /* If this reloc is against an lq insn, then the value must be
14676 a multiple of 16. This is somewhat of a hack, but the
14677 "correct" way to do this by defining _DQ forms of all the
14678 _DS relocs bloats all reloc switches in this file. It
14679 doesn't seem to make much sense to use any of these relocs
14680 in data, so testing the insn should be safe. */
14681 if ((insn & (0x3f << 26)) == (56u << 26))
14683 if (((relocation + addend) & mask) != 0)
14685 info->callbacks->einfo
14686 (_("%P: %H: error: %s not a multiple of %u\n"),
14687 input_bfd, input_section, rel->r_offset,
14690 bfd_set_error (bfd_error_bad_value);
14697 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14698 because such sections are not SEC_ALLOC and thus ld.so will
14699 not process them. */
14700 if (unresolved_reloc
14701 && !((input_section->flags & SEC_DEBUGGING) != 0
14702 && h->elf.def_dynamic)
14703 && _bfd_elf_section_offset (output_bfd, info, input_section,
14704 rel->r_offset) != (bfd_vma) -1)
14706 info->callbacks->einfo
14707 (_("%P: %H: unresolvable %s against `%T'\n"),
14708 input_bfd, input_section, rel->r_offset,
14710 h->elf.root.root.string);
14714 /* 16-bit fields in insns mostly have signed values, but a
14715 few insns have 16-bit unsigned values. Really, we should
14716 have different reloc types. */
14717 if (howto->complain_on_overflow != complain_overflow_dont
14718 && howto->dst_mask == 0xffff
14719 && (input_section->flags & SEC_CODE) != 0)
14721 enum complain_overflow complain = complain_overflow_signed;
14723 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14724 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14725 complain = complain_overflow_bitfield;
14726 else if (howto->rightshift == 0
14727 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14728 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14729 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14730 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14731 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14732 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14733 complain = complain_overflow_unsigned;
14734 if (howto->complain_on_overflow != complain)
14736 alt_howto = *howto;
14737 alt_howto.complain_on_overflow = complain;
14738 howto = &alt_howto;
14742 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14743 rel->r_offset, relocation, addend);
14745 if (r != bfd_reloc_ok)
14747 char *more_info = NULL;
14748 const char *reloc_name = howto->name;
14750 if (reloc_dest != DEST_NORMAL)
14752 more_info = bfd_malloc (strlen (reloc_name) + 8);
14753 if (more_info != NULL)
14755 strcpy (more_info, reloc_name);
14756 strcat (more_info, (reloc_dest == DEST_OPD
14757 ? " (OPD)" : " (stub)"));
14758 reloc_name = more_info;
14762 if (r == bfd_reloc_overflow)
14767 && h->elf.root.type == bfd_link_hash_undefweak
14768 && howto->pc_relative)
14770 /* Assume this is a call protected by other code that
14771 detects the symbol is undefined. If this is the case,
14772 we can safely ignore the overflow. If not, the
14773 program is hosed anyway, and a little warning isn't
14779 if (!((*info->callbacks->reloc_overflow)
14780 (info, &h->elf.root, sym_name,
14781 reloc_name, orig_rel.r_addend,
14782 input_bfd, input_section, rel->r_offset)))
14787 info->callbacks->einfo
14788 (_("%P: %H: %s against `%T': error %d\n"),
14789 input_bfd, input_section, rel->r_offset,
14790 reloc_name, sym_name, (int) r);
14793 if (more_info != NULL)
14798 /* If we're emitting relocations, then shortly after this function
14799 returns, reloc offsets and addends for this section will be
14800 adjusted. Worse, reloc symbol indices will be for the output
14801 file rather than the input. Save a copy of the relocs for
14802 opd_entry_value. */
14803 if (is_opd && (info->emitrelocations || info->relocatable))
14806 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14807 rel = bfd_alloc (input_bfd, amt);
14808 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14809 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14812 memcpy (rel, relocs, amt);
14817 /* Adjust the value of any local symbols in opd sections. */
14820 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14821 const char *name ATTRIBUTE_UNUSED,
14822 Elf_Internal_Sym *elfsym,
14823 asection *input_sec,
14824 struct elf_link_hash_entry *h)
14826 struct _opd_sec_data *opd;
14833 opd = get_opd_info (input_sec);
14834 if (opd == NULL || opd->adjust == NULL)
14837 value = elfsym->st_value - input_sec->output_offset;
14838 if (!info->relocatable)
14839 value -= input_sec->output_section->vma;
14841 adjust = opd->adjust[value / 8];
14845 elfsym->st_value += adjust;
14849 /* Finish up dynamic symbol handling. We set the contents of various
14850 dynamic sections here. */
14853 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14854 struct bfd_link_info *info,
14855 struct elf_link_hash_entry *h,
14856 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14858 struct ppc_link_hash_table *htab;
14859 struct plt_entry *ent;
14860 Elf_Internal_Rela rela;
14863 htab = ppc_hash_table (info);
14867 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14868 if (ent->plt.offset != (bfd_vma) -1)
14870 /* This symbol has an entry in the procedure linkage
14871 table. Set it up. */
14872 if (!htab->elf.dynamic_sections_created
14873 || h->dynindx == -1)
14875 BFD_ASSERT (h->type == STT_GNU_IFUNC
14877 && (h->root.type == bfd_link_hash_defined
14878 || h->root.type == bfd_link_hash_defweak));
14879 rela.r_offset = (htab->elf.iplt->output_section->vma
14880 + htab->elf.iplt->output_offset
14881 + ent->plt.offset);
14883 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14885 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14886 rela.r_addend = (h->root.u.def.value
14887 + h->root.u.def.section->output_offset
14888 + h->root.u.def.section->output_section->vma
14890 loc = (htab->elf.irelplt->contents
14891 + (htab->elf.irelplt->reloc_count++
14892 * sizeof (Elf64_External_Rela)));
14896 rela.r_offset = (htab->elf.splt->output_section->vma
14897 + htab->elf.splt->output_offset
14898 + ent->plt.offset);
14899 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14900 rela.r_addend = ent->addend;
14901 loc = (htab->elf.srelplt->contents
14902 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14903 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14905 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14907 if (!htab->opd_abi)
14909 if (!h->def_regular)
14911 /* Mark the symbol as undefined, rather than as
14912 defined in glink. Leave the value if there were
14913 any relocations where pointer equality matters
14914 (this is a clue for the dynamic linker, to make
14915 function pointer comparisons work between an
14916 application and shared library), otherwise set it
14918 sym->st_shndx = SHN_UNDEF;
14919 if (!h->pointer_equality_needed)
14921 else if (!h->ref_regular_nonweak)
14923 /* This breaks function pointer comparisons, but
14924 that is better than breaking tests for a NULL
14925 function pointer. */
14934 /* This symbol needs a copy reloc. Set it up. */
14936 if (h->dynindx == -1
14937 || (h->root.type != bfd_link_hash_defined
14938 && h->root.type != bfd_link_hash_defweak)
14939 || htab->relbss == NULL)
14942 rela.r_offset = (h->root.u.def.value
14943 + h->root.u.def.section->output_section->vma
14944 + h->root.u.def.section->output_offset);
14945 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14947 loc = htab->relbss->contents;
14948 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14949 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14955 /* Used to decide how to sort relocs in an optimal manner for the
14956 dynamic linker, before writing them out. */
14958 static enum elf_reloc_type_class
14959 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14960 const asection *rel_sec,
14961 const Elf_Internal_Rela *rela)
14963 enum elf_ppc64_reloc_type r_type;
14964 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14966 if (rel_sec == htab->elf.irelplt)
14967 return reloc_class_ifunc;
14969 r_type = ELF64_R_TYPE (rela->r_info);
14972 case R_PPC64_RELATIVE:
14973 return reloc_class_relative;
14974 case R_PPC64_JMP_SLOT:
14975 return reloc_class_plt;
14977 return reloc_class_copy;
14979 return reloc_class_normal;
14983 /* Finish up the dynamic sections. */
14986 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14987 struct bfd_link_info *info)
14989 struct ppc_link_hash_table *htab;
14993 htab = ppc_hash_table (info);
14997 dynobj = htab->elf.dynobj;
14998 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15000 if (htab->elf.dynamic_sections_created)
15002 Elf64_External_Dyn *dyncon, *dynconend;
15004 if (sdyn == NULL || htab->elf.sgot == NULL)
15007 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15008 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15009 for (; dyncon < dynconend; dyncon++)
15011 Elf_Internal_Dyn dyn;
15014 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15021 case DT_PPC64_GLINK:
15023 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15024 /* We stupidly defined DT_PPC64_GLINK to be the start
15025 of glink rather than the first entry point, which is
15026 what ld.so needs, and now have a bigger stub to
15027 support automatic multiple TOCs. */
15028 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15032 s = bfd_get_section_by_name (output_bfd, ".opd");
15035 dyn.d_un.d_ptr = s->vma;
15039 if (htab->do_multi_toc && htab->multi_toc_needed)
15040 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15043 case DT_PPC64_OPDSZ:
15044 s = bfd_get_section_by_name (output_bfd, ".opd");
15047 dyn.d_un.d_val = s->size;
15051 s = htab->elf.splt;
15052 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15056 s = htab->elf.srelplt;
15057 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15061 dyn.d_un.d_val = htab->elf.srelplt->size;
15065 /* Don't count procedure linkage table relocs in the
15066 overall reloc count. */
15067 s = htab->elf.srelplt;
15070 dyn.d_un.d_val -= s->size;
15074 /* We may not be using the standard ELF linker script.
15075 If .rela.plt is the first .rela section, we adjust
15076 DT_RELA to not include it. */
15077 s = htab->elf.srelplt;
15080 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15082 dyn.d_un.d_ptr += s->size;
15086 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15090 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15092 /* Fill in the first entry in the global offset table.
15093 We use it to hold the link-time TOCbase. */
15094 bfd_put_64 (output_bfd,
15095 elf_gp (output_bfd) + TOC_BASE_OFF,
15096 htab->elf.sgot->contents);
15098 /* Set .got entry size. */
15099 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15102 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15104 /* Set .plt entry size. */
15105 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15106 = PLT_ENTRY_SIZE (htab);
15109 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15110 brlt ourselves if emitrelocations. */
15111 if (htab->brlt != NULL
15112 && htab->brlt->reloc_count != 0
15113 && !_bfd_elf_link_output_relocs (output_bfd,
15115 elf_section_data (htab->brlt)->rela.hdr,
15116 elf_section_data (htab->brlt)->relocs,
15120 if (htab->glink != NULL
15121 && htab->glink->reloc_count != 0
15122 && !_bfd_elf_link_output_relocs (output_bfd,
15124 elf_section_data (htab->glink)->rela.hdr,
15125 elf_section_data (htab->glink)->relocs,
15130 if (htab->glink_eh_frame != NULL
15131 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15132 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15133 htab->glink_eh_frame,
15134 htab->glink_eh_frame->contents))
15137 /* We need to handle writing out multiple GOT sections ourselves,
15138 since we didn't add them to DYNOBJ. We know dynobj is the first
15140 while ((dynobj = dynobj->link.next) != NULL)
15144 if (!is_ppc64_elf (dynobj))
15147 s = ppc64_elf_tdata (dynobj)->got;
15150 && s->output_section != bfd_abs_section_ptr
15151 && !bfd_set_section_contents (output_bfd, s->output_section,
15152 s->contents, s->output_offset,
15155 s = ppc64_elf_tdata (dynobj)->relgot;
15158 && s->output_section != bfd_abs_section_ptr
15159 && !bfd_set_section_contents (output_bfd, s->output_section,
15160 s->contents, s->output_offset,
15168 #include "elf64-target.h"
15170 /* FreeBSD support */
15172 #undef TARGET_LITTLE_SYM
15173 #undef TARGET_LITTLE_NAME
15175 #undef TARGET_BIG_SYM
15176 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15177 #undef TARGET_BIG_NAME
15178 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15181 #define ELF_OSABI ELFOSABI_FREEBSD
15184 #define elf64_bed elf64_powerpc_fbsd_bed
15186 #include "elf64-target.h"