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
3791 struct ppc_stub_hash_entry {
3793 /* Base hash table entry structure. */
3794 struct bfd_hash_entry root;
3796 enum ppc_stub_type stub_type;
3798 /* The stub section. */
3801 /* Offset within stub_sec of the beginning of this stub. */
3802 bfd_vma stub_offset;
3804 /* Given the symbol's value and its section we can determine its final
3805 value when building the stubs (so the stub knows where to jump. */
3806 bfd_vma target_value;
3807 asection *target_section;
3809 /* The symbol table entry, if any, that this was derived from. */
3810 struct ppc_link_hash_entry *h;
3811 struct plt_entry *plt_ent;
3813 /* Where this stub is being called from, or, in the case of combined
3814 stub sections, the first input section in the group. */
3817 /* Symbol st_other. */
3818 unsigned char other;
3821 struct ppc_branch_hash_entry {
3823 /* Base hash table entry structure. */
3824 struct bfd_hash_entry root;
3826 /* Offset within branch lookup table. */
3827 unsigned int offset;
3829 /* Generation marker. */
3833 /* Used to track dynamic relocations for local symbols. */
3834 struct ppc_dyn_relocs
3836 struct ppc_dyn_relocs *next;
3838 /* The input section of the reloc. */
3841 /* Total number of relocs copied for the input section. */
3842 unsigned int count : 31;
3844 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3845 unsigned int ifunc : 1;
3848 struct ppc_link_hash_entry
3850 struct elf_link_hash_entry elf;
3853 /* A pointer to the most recently used stub hash entry against this
3855 struct ppc_stub_hash_entry *stub_cache;
3857 /* A pointer to the next symbol starting with a '.' */
3858 struct ppc_link_hash_entry *next_dot_sym;
3861 /* Track dynamic relocs copied for this symbol. */
3862 struct elf_dyn_relocs *dyn_relocs;
3864 /* Link between function code and descriptor symbols. */
3865 struct ppc_link_hash_entry *oh;
3867 /* Flag function code and descriptor symbols. */
3868 unsigned int is_func:1;
3869 unsigned int is_func_descriptor:1;
3870 unsigned int fake:1;
3872 /* Whether global opd/toc sym has been adjusted or not.
3873 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3874 should be set for all globals defined in any opd/toc section. */
3875 unsigned int adjust_done:1;
3877 /* Set if we twiddled this symbol to weak at some stage. */
3878 unsigned int was_undefined:1;
3880 /* Contexts in which symbol is used in the GOT (or TOC).
3881 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3882 corresponding relocs are encountered during check_relocs.
3883 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3884 indicate the corresponding GOT entry type is not needed.
3885 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3886 a TPREL one. We use a separate flag rather than setting TPREL
3887 just for convenience in distinguishing the two cases. */
3888 #define TLS_GD 1 /* GD reloc. */
3889 #define TLS_LD 2 /* LD reloc. */
3890 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3891 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3892 #define TLS_TLS 16 /* Any TLS reloc. */
3893 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3894 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3895 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3896 unsigned char tls_mask;
3899 /* ppc64 ELF linker hash table. */
3901 struct ppc_link_hash_table
3903 struct elf_link_hash_table elf;
3905 /* The stub hash table. */
3906 struct bfd_hash_table stub_hash_table;
3908 /* Another hash table for plt_branch stubs. */
3909 struct bfd_hash_table branch_hash_table;
3911 /* Hash table for function prologue tocsave. */
3912 htab_t tocsave_htab;
3914 /* Various options and other info passed from the linker. */
3915 struct ppc64_elf_params *params;
3917 /* Array to keep track of which stub sections have been created, and
3918 information on stub grouping. */
3920 /* This is the section to which stubs in the group will be attached. */
3922 /* The stub section. */
3924 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3928 /* Temp used when calculating TOC pointers. */
3931 asection *toc_first_sec;
3933 /* Highest input section id. */
3936 /* Highest output section index. */
3939 /* Used when adding symbols. */
3940 struct ppc_link_hash_entry *dot_syms;
3942 /* List of input sections for each output section. */
3943 asection **input_list;
3945 /* Shortcuts to get to dynamic linker sections. */
3952 asection *glink_eh_frame;
3954 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3955 struct ppc_link_hash_entry *tls_get_addr;
3956 struct ppc_link_hash_entry *tls_get_addr_fd;
3958 /* The size of reliplt used by got entry relocs. */
3959 bfd_size_type got_reli_size;
3962 unsigned long stub_count[ppc_stub_plt_call_r2save];
3964 /* Number of stubs against global syms. */
3965 unsigned long stub_globals;
3967 /* Set if we're linking code with function descriptors. */
3968 unsigned int opd_abi:1;
3970 /* Support for multiple toc sections. */
3971 unsigned int do_multi_toc:1;
3972 unsigned int multi_toc_needed:1;
3973 unsigned int second_toc_pass:1;
3974 unsigned int do_toc_opt:1;
3977 unsigned int stub_error:1;
3979 /* Temp used by ppc64_elf_before_check_relocs. */
3980 unsigned int twiddled_syms:1;
3982 /* Incremented every time we size stubs. */
3983 unsigned int stub_iteration;
3985 /* Small local sym cache. */
3986 struct sym_cache sym_cache;
3989 /* Rename some of the generic section flags to better document how they
3992 /* Nonzero if this section has TLS related relocations. */
3993 #define has_tls_reloc sec_flg0
3995 /* Nonzero if this section has a call to __tls_get_addr. */
3996 #define has_tls_get_addr_call sec_flg1
3998 /* Nonzero if this section has any toc or got relocs. */
3999 #define has_toc_reloc sec_flg2
4001 /* Nonzero if this section has a call to another section that uses
4003 #define makes_toc_func_call sec_flg3
4005 /* Recursion protection when determining above flag. */
4006 #define call_check_in_progress sec_flg4
4007 #define call_check_done sec_flg5
4009 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4011 #define ppc_hash_table(p) \
4012 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4013 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4015 #define ppc_stub_hash_lookup(table, string, create, copy) \
4016 ((struct ppc_stub_hash_entry *) \
4017 bfd_hash_lookup ((table), (string), (create), (copy)))
4019 #define ppc_branch_hash_lookup(table, string, create, copy) \
4020 ((struct ppc_branch_hash_entry *) \
4021 bfd_hash_lookup ((table), (string), (create), (copy)))
4023 /* Create an entry in the stub hash table. */
4025 static struct bfd_hash_entry *
4026 stub_hash_newfunc (struct bfd_hash_entry *entry,
4027 struct bfd_hash_table *table,
4030 /* Allocate the structure if it has not already been allocated by a
4034 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4039 /* Call the allocation method of the superclass. */
4040 entry = bfd_hash_newfunc (entry, table, string);
4043 struct ppc_stub_hash_entry *eh;
4045 /* Initialize the local fields. */
4046 eh = (struct ppc_stub_hash_entry *) entry;
4047 eh->stub_type = ppc_stub_none;
4048 eh->stub_sec = NULL;
4049 eh->stub_offset = 0;
4050 eh->target_value = 0;
4051 eh->target_section = NULL;
4061 /* Create an entry in the branch hash table. */
4063 static struct bfd_hash_entry *
4064 branch_hash_newfunc (struct bfd_hash_entry *entry,
4065 struct bfd_hash_table *table,
4068 /* Allocate the structure if it has not already been allocated by a
4072 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4077 /* Call the allocation method of the superclass. */
4078 entry = bfd_hash_newfunc (entry, table, string);
4081 struct ppc_branch_hash_entry *eh;
4083 /* Initialize the local fields. */
4084 eh = (struct ppc_branch_hash_entry *) entry;
4092 /* Create an entry in a ppc64 ELF linker hash table. */
4094 static struct bfd_hash_entry *
4095 link_hash_newfunc (struct bfd_hash_entry *entry,
4096 struct bfd_hash_table *table,
4099 /* Allocate the structure if it has not already been allocated by a
4103 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4108 /* Call the allocation method of the superclass. */
4109 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4112 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4114 memset (&eh->u.stub_cache, 0,
4115 (sizeof (struct ppc_link_hash_entry)
4116 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4118 /* When making function calls, old ABI code references function entry
4119 points (dot symbols), while new ABI code references the function
4120 descriptor symbol. We need to make any combination of reference and
4121 definition work together, without breaking archive linking.
4123 For a defined function "foo" and an undefined call to "bar":
4124 An old object defines "foo" and ".foo", references ".bar" (possibly
4126 A new object defines "foo" and references "bar".
4128 A new object thus has no problem with its undefined symbols being
4129 satisfied by definitions in an old object. On the other hand, the
4130 old object won't have ".bar" satisfied by a new object.
4132 Keep a list of newly added dot-symbols. */
4134 if (string[0] == '.')
4136 struct ppc_link_hash_table *htab;
4138 htab = (struct ppc_link_hash_table *) table;
4139 eh->u.next_dot_sym = htab->dot_syms;
4140 htab->dot_syms = eh;
4147 struct tocsave_entry {
4153 tocsave_htab_hash (const void *p)
4155 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4156 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4160 tocsave_htab_eq (const void *p1, const void *p2)
4162 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4163 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4164 return e1->sec == e2->sec && e1->offset == e2->offset;
4167 /* Destroy a ppc64 ELF linker hash table. */
4170 ppc64_elf_link_hash_table_free (bfd *obfd)
4172 struct ppc_link_hash_table *htab;
4174 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4175 if (htab->tocsave_htab)
4176 htab_delete (htab->tocsave_htab);
4177 bfd_hash_table_free (&htab->branch_hash_table);
4178 bfd_hash_table_free (&htab->stub_hash_table);
4179 _bfd_elf_link_hash_table_free (obfd);
4182 /* Create a ppc64 ELF linker hash table. */
4184 static struct bfd_link_hash_table *
4185 ppc64_elf_link_hash_table_create (bfd *abfd)
4187 struct ppc_link_hash_table *htab;
4188 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4190 htab = bfd_zmalloc (amt);
4194 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4195 sizeof (struct ppc_link_hash_entry),
4202 /* Init the stub hash table too. */
4203 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4204 sizeof (struct ppc_stub_hash_entry)))
4206 _bfd_elf_link_hash_table_free (abfd);
4210 /* And the branch hash table. */
4211 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4212 sizeof (struct ppc_branch_hash_entry)))
4214 bfd_hash_table_free (&htab->stub_hash_table);
4215 _bfd_elf_link_hash_table_free (abfd);
4219 htab->tocsave_htab = htab_try_create (1024,
4223 if (htab->tocsave_htab == NULL)
4225 ppc64_elf_link_hash_table_free (abfd);
4228 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4230 /* Initializing two fields of the union is just cosmetic. We really
4231 only care about glist, but when compiled on a 32-bit host the
4232 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4233 debugger inspection of these fields look nicer. */
4234 htab->elf.init_got_refcount.refcount = 0;
4235 htab->elf.init_got_refcount.glist = NULL;
4236 htab->elf.init_plt_refcount.refcount = 0;
4237 htab->elf.init_plt_refcount.glist = NULL;
4238 htab->elf.init_got_offset.offset = 0;
4239 htab->elf.init_got_offset.glist = NULL;
4240 htab->elf.init_plt_offset.offset = 0;
4241 htab->elf.init_plt_offset.glist = NULL;
4243 return &htab->elf.root;
4246 /* Create sections for linker generated code. */
4249 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4251 struct ppc_link_hash_table *htab;
4254 htab = ppc_hash_table (info);
4256 /* Create .sfpr for code to save and restore fp regs. */
4257 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4258 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4259 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4261 if (htab->sfpr == NULL
4262 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4265 /* Create .glink for lazy dynamic linking support. */
4266 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4268 if (htab->glink == NULL
4269 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4272 if (!info->no_ld_generated_unwind_info)
4274 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4275 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4276 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4279 if (htab->glink_eh_frame == NULL
4280 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4284 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4285 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4286 if (htab->elf.iplt == NULL
4287 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4290 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4291 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4293 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4294 if (htab->elf.irelplt == NULL
4295 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4298 /* Create branch lookup table for plt_branch stubs. */
4299 flags = (SEC_ALLOC | SEC_LOAD
4300 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4301 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4303 if (htab->brlt == NULL
4304 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4310 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4311 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4312 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4315 if (htab->relbrlt == NULL
4316 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4322 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4325 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4326 struct ppc64_elf_params *params)
4328 struct ppc_link_hash_table *htab;
4330 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4332 /* Always hook our dynamic sections into the first bfd, which is the
4333 linker created stub bfd. This ensures that the GOT header is at
4334 the start of the output TOC section. */
4335 htab = ppc_hash_table (info);
4338 htab->elf.dynobj = params->stub_bfd;
4339 htab->params = params;
4341 if (info->relocatable)
4344 return create_linkage_sections (htab->elf.dynobj, info);
4347 /* Build a name for an entry in the stub hash table. */
4350 ppc_stub_name (const asection *input_section,
4351 const asection *sym_sec,
4352 const struct ppc_link_hash_entry *h,
4353 const Elf_Internal_Rela *rel)
4358 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4359 offsets from a sym as a branch target? In fact, we could
4360 probably assume the addend is always zero. */
4361 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4365 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4366 stub_name = bfd_malloc (len);
4367 if (stub_name == NULL)
4370 len = sprintf (stub_name, "%08x.%s+%x",
4371 input_section->id & 0xffffffff,
4372 h->elf.root.root.string,
4373 (int) rel->r_addend & 0xffffffff);
4377 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4378 stub_name = bfd_malloc (len);
4379 if (stub_name == NULL)
4382 len = sprintf (stub_name, "%08x.%x:%x+%x",
4383 input_section->id & 0xffffffff,
4384 sym_sec->id & 0xffffffff,
4385 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4386 (int) rel->r_addend & 0xffffffff);
4388 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4389 stub_name[len - 2] = 0;
4393 /* Look up an entry in the stub hash. Stub entries are cached because
4394 creating the stub name takes a bit of time. */
4396 static struct ppc_stub_hash_entry *
4397 ppc_get_stub_entry (const asection *input_section,
4398 const asection *sym_sec,
4399 struct ppc_link_hash_entry *h,
4400 const Elf_Internal_Rela *rel,
4401 struct ppc_link_hash_table *htab)
4403 struct ppc_stub_hash_entry *stub_entry;
4404 const asection *id_sec;
4406 /* If this input section is part of a group of sections sharing one
4407 stub section, then use the id of the first section in the group.
4408 Stub names need to include a section id, as there may well be
4409 more than one stub used to reach say, printf, and we need to
4410 distinguish between them. */
4411 id_sec = htab->stub_group[input_section->id].link_sec;
4413 if (h != NULL && h->u.stub_cache != NULL
4414 && h->u.stub_cache->h == h
4415 && h->u.stub_cache->id_sec == id_sec)
4417 stub_entry = h->u.stub_cache;
4423 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4424 if (stub_name == NULL)
4427 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4428 stub_name, FALSE, FALSE);
4430 h->u.stub_cache = stub_entry;
4438 /* Add a new stub entry to the stub hash. Not all fields of the new
4439 stub entry are initialised. */
4441 static struct ppc_stub_hash_entry *
4442 ppc_add_stub (const char *stub_name,
4444 struct bfd_link_info *info)
4446 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4449 struct ppc_stub_hash_entry *stub_entry;
4451 link_sec = htab->stub_group[section->id].link_sec;
4452 stub_sec = htab->stub_group[section->id].stub_sec;
4453 if (stub_sec == NULL)
4455 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4456 if (stub_sec == NULL)
4462 namelen = strlen (link_sec->name);
4463 len = namelen + sizeof (STUB_SUFFIX);
4464 s_name = bfd_alloc (htab->params->stub_bfd, len);
4468 memcpy (s_name, link_sec->name, namelen);
4469 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4470 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4471 if (stub_sec == NULL)
4473 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4475 htab->stub_group[section->id].stub_sec = stub_sec;
4478 /* Enter this entry into the linker stub hash table. */
4479 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4481 if (stub_entry == NULL)
4483 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4484 section->owner, stub_name);
4488 stub_entry->stub_sec = stub_sec;
4489 stub_entry->stub_offset = 0;
4490 stub_entry->id_sec = link_sec;
4494 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4495 not already done. */
4498 create_got_section (bfd *abfd, struct bfd_link_info *info)
4500 asection *got, *relgot;
4502 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4504 if (!is_ppc64_elf (abfd))
4510 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4513 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4514 | SEC_LINKER_CREATED);
4516 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4518 || !bfd_set_section_alignment (abfd, got, 3))
4521 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4522 flags | SEC_READONLY);
4524 || ! bfd_set_section_alignment (abfd, relgot, 3))
4527 ppc64_elf_tdata (abfd)->got = got;
4528 ppc64_elf_tdata (abfd)->relgot = relgot;
4532 /* Create the dynamic sections, and set up shortcuts. */
4535 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4537 struct ppc_link_hash_table *htab;
4539 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4542 htab = ppc_hash_table (info);
4546 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4548 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4550 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4551 || (!info->shared && !htab->relbss))
4557 /* Follow indirect and warning symbol links. */
4559 static inline struct bfd_link_hash_entry *
4560 follow_link (struct bfd_link_hash_entry *h)
4562 while (h->type == bfd_link_hash_indirect
4563 || h->type == bfd_link_hash_warning)
4568 static inline struct elf_link_hash_entry *
4569 elf_follow_link (struct elf_link_hash_entry *h)
4571 return (struct elf_link_hash_entry *) follow_link (&h->root);
4574 static inline struct ppc_link_hash_entry *
4575 ppc_follow_link (struct ppc_link_hash_entry *h)
4577 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4580 /* Merge PLT info on FROM with that on TO. */
4583 move_plt_plist (struct ppc_link_hash_entry *from,
4584 struct ppc_link_hash_entry *to)
4586 if (from->elf.plt.plist != NULL)
4588 if (to->elf.plt.plist != NULL)
4590 struct plt_entry **entp;
4591 struct plt_entry *ent;
4593 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4595 struct plt_entry *dent;
4597 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4598 if (dent->addend == ent->addend)
4600 dent->plt.refcount += ent->plt.refcount;
4607 *entp = to->elf.plt.plist;
4610 to->elf.plt.plist = from->elf.plt.plist;
4611 from->elf.plt.plist = NULL;
4615 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4618 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4619 struct elf_link_hash_entry *dir,
4620 struct elf_link_hash_entry *ind)
4622 struct ppc_link_hash_entry *edir, *eind;
4624 edir = (struct ppc_link_hash_entry *) dir;
4625 eind = (struct ppc_link_hash_entry *) ind;
4627 edir->is_func |= eind->is_func;
4628 edir->is_func_descriptor |= eind->is_func_descriptor;
4629 edir->tls_mask |= eind->tls_mask;
4630 if (eind->oh != NULL)
4631 edir->oh = ppc_follow_link (eind->oh);
4633 /* If called to transfer flags for a weakdef during processing
4634 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4635 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4636 if (!(ELIMINATE_COPY_RELOCS
4637 && eind->elf.root.type != bfd_link_hash_indirect
4638 && edir->elf.dynamic_adjusted))
4639 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4641 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4642 edir->elf.ref_regular |= eind->elf.ref_regular;
4643 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4644 edir->elf.needs_plt |= eind->elf.needs_plt;
4645 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4647 /* Copy over any dynamic relocs we may have on the indirect sym. */
4648 if (eind->dyn_relocs != NULL)
4650 if (edir->dyn_relocs != NULL)
4652 struct elf_dyn_relocs **pp;
4653 struct elf_dyn_relocs *p;
4655 /* Add reloc counts against the indirect sym to the direct sym
4656 list. Merge any entries against the same section. */
4657 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4659 struct elf_dyn_relocs *q;
4661 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4662 if (q->sec == p->sec)
4664 q->pc_count += p->pc_count;
4665 q->count += p->count;
4672 *pp = edir->dyn_relocs;
4675 edir->dyn_relocs = eind->dyn_relocs;
4676 eind->dyn_relocs = NULL;
4679 /* If we were called to copy over info for a weak sym, that's all.
4680 You might think dyn_relocs need not be copied over; After all,
4681 both syms will be dynamic or both non-dynamic so we're just
4682 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4683 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4684 dyn_relocs in read-only sections, and it does so on what is the
4686 if (eind->elf.root.type != bfd_link_hash_indirect)
4689 /* Copy over got entries that we may have already seen to the
4690 symbol which just became indirect. */
4691 if (eind->elf.got.glist != NULL)
4693 if (edir->elf.got.glist != NULL)
4695 struct got_entry **entp;
4696 struct got_entry *ent;
4698 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4700 struct got_entry *dent;
4702 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4703 if (dent->addend == ent->addend
4704 && dent->owner == ent->owner
4705 && dent->tls_type == ent->tls_type)
4707 dent->got.refcount += ent->got.refcount;
4714 *entp = edir->elf.got.glist;
4717 edir->elf.got.glist = eind->elf.got.glist;
4718 eind->elf.got.glist = NULL;
4721 /* And plt entries. */
4722 move_plt_plist (eind, edir);
4724 if (eind->elf.dynindx != -1)
4726 if (edir->elf.dynindx != -1)
4727 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4728 edir->elf.dynstr_index);
4729 edir->elf.dynindx = eind->elf.dynindx;
4730 edir->elf.dynstr_index = eind->elf.dynstr_index;
4731 eind->elf.dynindx = -1;
4732 eind->elf.dynstr_index = 0;
4736 /* Find the function descriptor hash entry from the given function code
4737 hash entry FH. Link the entries via their OH fields. */
4739 static struct ppc_link_hash_entry *
4740 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4742 struct ppc_link_hash_entry *fdh = fh->oh;
4746 const char *fd_name = fh->elf.root.root.string + 1;
4748 fdh = (struct ppc_link_hash_entry *)
4749 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4753 fdh->is_func_descriptor = 1;
4759 return ppc_follow_link (fdh);
4762 /* Make a fake function descriptor sym for the code sym FH. */
4764 static struct ppc_link_hash_entry *
4765 make_fdh (struct bfd_link_info *info,
4766 struct ppc_link_hash_entry *fh)
4770 struct bfd_link_hash_entry *bh;
4771 struct ppc_link_hash_entry *fdh;
4773 abfd = fh->elf.root.u.undef.abfd;
4774 newsym = bfd_make_empty_symbol (abfd);
4775 newsym->name = fh->elf.root.root.string + 1;
4776 newsym->section = bfd_und_section_ptr;
4778 newsym->flags = BSF_WEAK;
4781 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4782 newsym->flags, newsym->section,
4783 newsym->value, NULL, FALSE, FALSE,
4787 fdh = (struct ppc_link_hash_entry *) bh;
4788 fdh->elf.non_elf = 0;
4790 fdh->is_func_descriptor = 1;
4797 /* Fix function descriptor symbols defined in .opd sections to be
4801 ppc64_elf_add_symbol_hook (bfd *ibfd,
4802 struct bfd_link_info *info,
4803 Elf_Internal_Sym *isym,
4805 flagword *flags ATTRIBUTE_UNUSED,
4807 bfd_vma *value ATTRIBUTE_UNUSED)
4809 if ((ibfd->flags & DYNAMIC) == 0
4810 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4811 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4813 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4815 if ((ibfd->flags & DYNAMIC) == 0)
4816 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4818 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4820 else if (*sec != NULL
4821 && strcmp ((*sec)->name, ".opd") == 0)
4822 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4824 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4826 if (abiversion (ibfd) == 0)
4827 set_abiversion (ibfd, 2);
4828 else if (abiversion (ibfd) == 1)
4830 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4831 " for ABI version 1\n"), name);
4832 bfd_set_error (bfd_error_bad_value);
4840 /* Merge non-visibility st_other attributes: local entry point. */
4843 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4844 const Elf_Internal_Sym *isym,
4845 bfd_boolean definition,
4846 bfd_boolean dynamic)
4848 if (definition && !dynamic)
4849 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4850 | ELF_ST_VISIBILITY (h->other));
4853 /* This function makes an old ABI object reference to ".bar" cause the
4854 inclusion of a new ABI object archive that defines "bar".
4855 NAME is a symbol defined in an archive. Return a symbol in the hash
4856 table that might be satisfied by the archive symbols. */
4858 static struct elf_link_hash_entry *
4859 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4860 struct bfd_link_info *info,
4863 struct elf_link_hash_entry *h;
4867 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4869 /* Don't return this sym if it is a fake function descriptor
4870 created by add_symbol_adjust. */
4871 && !(h->root.type == bfd_link_hash_undefweak
4872 && ((struct ppc_link_hash_entry *) h)->fake))
4878 len = strlen (name);
4879 dot_name = bfd_alloc (abfd, len + 2);
4880 if (dot_name == NULL)
4881 return (struct elf_link_hash_entry *) 0 - 1;
4883 memcpy (dot_name + 1, name, len + 1);
4884 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4885 bfd_release (abfd, dot_name);
4889 /* This function satisfies all old ABI object references to ".bar" if a
4890 new ABI object defines "bar". Well, at least, undefined dot symbols
4891 are made weak. This stops later archive searches from including an
4892 object if we already have a function descriptor definition. It also
4893 prevents the linker complaining about undefined symbols.
4894 We also check and correct mismatched symbol visibility here. The
4895 most restrictive visibility of the function descriptor and the
4896 function entry symbol is used. */
4899 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4901 struct ppc_link_hash_table *htab;
4902 struct ppc_link_hash_entry *fdh;
4904 if (eh->elf.root.type == bfd_link_hash_indirect)
4907 if (eh->elf.root.type == bfd_link_hash_warning)
4908 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4910 if (eh->elf.root.root.string[0] != '.')
4913 htab = ppc_hash_table (info);
4917 fdh = lookup_fdh (eh, htab);
4920 if (!info->relocatable
4921 && (eh->elf.root.type == bfd_link_hash_undefined
4922 || eh->elf.root.type == bfd_link_hash_undefweak)
4923 && eh->elf.ref_regular)
4925 /* Make an undefweak function descriptor sym, which is enough to
4926 pull in an --as-needed shared lib, but won't cause link
4927 errors. Archives are handled elsewhere. */
4928 fdh = make_fdh (info, eh);
4931 fdh->elf.ref_regular = 1;
4936 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4937 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4938 if (entry_vis < descr_vis)
4939 fdh->elf.other += entry_vis - descr_vis;
4940 else if (entry_vis > descr_vis)
4941 eh->elf.other += descr_vis - entry_vis;
4943 if ((fdh->elf.root.type == bfd_link_hash_defined
4944 || fdh->elf.root.type == bfd_link_hash_defweak)
4945 && eh->elf.root.type == bfd_link_hash_undefined)
4947 eh->elf.root.type = bfd_link_hash_undefweak;
4948 eh->was_undefined = 1;
4949 htab->twiddled_syms = 1;
4956 /* Set up opd section info and abiversion for IBFD, and process list
4957 of dot-symbols we made in link_hash_newfunc. */
4960 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4962 struct ppc_link_hash_table *htab;
4963 struct ppc_link_hash_entry **p, *eh;
4965 if (!is_ppc64_elf (info->output_bfd))
4967 htab = ppc_hash_table (info);
4971 if (is_ppc64_elf (ibfd))
4973 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4975 if (opd != NULL && opd->size != 0)
4977 if (abiversion (ibfd) == 0)
4978 set_abiversion (ibfd, 1);
4979 else if (abiversion (ibfd) == 2)
4981 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4983 ibfd, abiversion (ibfd));
4984 bfd_set_error (bfd_error_bad_value);
4988 if ((ibfd->flags & DYNAMIC) == 0
4989 && (opd->flags & SEC_RELOC) != 0
4990 && opd->reloc_count != 0
4991 && !bfd_is_abs_section (opd->output_section))
4993 /* Garbage collection needs some extra help with .opd sections.
4994 We don't want to necessarily keep everything referenced by
4995 relocs in .opd, as that would keep all functions. Instead,
4996 if we reference an .opd symbol (a function descriptor), we
4997 want to keep the function code symbol's section. This is
4998 easy for global symbols, but for local syms we need to keep
4999 information about the associated function section. */
5001 asection **opd_sym_map;
5003 amt = opd->size * sizeof (*opd_sym_map) / 8;
5004 opd_sym_map = bfd_zalloc (ibfd, amt);
5005 if (opd_sym_map == NULL)
5007 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5008 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5009 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5013 /* For input files without an explicit abiversion in e_flags
5014 we should have flagged any with symbol st_other bits set
5015 as ELFv1 and above flagged those with .opd as ELFv2.
5016 Set the output abiversion if not yet set, and for any input
5017 still ambiguous, take its abiversion from the output.
5018 Differences in ABI are reported later. */
5019 if (abiversion (info->output_bfd) == 0)
5020 set_abiversion (info->output_bfd, abiversion (ibfd));
5021 else if (abiversion (ibfd) == 0)
5022 set_abiversion (ibfd, abiversion (info->output_bfd));
5024 p = &htab->dot_syms;
5025 while ((eh = *p) != NULL)
5028 if (&eh->elf == htab->elf.hgot)
5030 else if (htab->elf.hgot == NULL
5031 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5032 htab->elf.hgot = &eh->elf;
5033 else if (!add_symbol_adjust (eh, info))
5035 p = &eh->u.next_dot_sym;
5039 /* Clear the list for non-ppc64 input files. */
5040 p = &htab->dot_syms;
5041 while ((eh = *p) != NULL)
5044 p = &eh->u.next_dot_sym;
5047 /* We need to fix the undefs list for any syms we have twiddled to
5049 if (htab->twiddled_syms)
5051 bfd_link_repair_undef_list (&htab->elf.root);
5052 htab->twiddled_syms = 0;
5057 /* Undo hash table changes when an --as-needed input file is determined
5058 not to be needed. */
5061 ppc64_elf_notice_as_needed (bfd *ibfd,
5062 struct bfd_link_info *info,
5063 enum notice_asneeded_action act)
5065 if (act == notice_not_needed)
5067 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5072 htab->dot_syms = NULL;
5074 return _bfd_elf_notice_as_needed (ibfd, info, act);
5077 /* If --just-symbols against a final linked binary, then assume we need
5078 toc adjusting stubs when calling functions defined there. */
5081 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5083 if ((sec->flags & SEC_CODE) != 0
5084 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5085 && is_ppc64_elf (sec->owner))
5087 if (abiversion (sec->owner) >= 2
5088 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5089 sec->has_toc_reloc = 1;
5091 _bfd_elf_link_just_syms (sec, info);
5094 static struct plt_entry **
5095 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5096 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5098 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5099 struct plt_entry **local_plt;
5100 unsigned char *local_got_tls_masks;
5102 if (local_got_ents == NULL)
5104 bfd_size_type size = symtab_hdr->sh_info;
5106 size *= (sizeof (*local_got_ents)
5107 + sizeof (*local_plt)
5108 + sizeof (*local_got_tls_masks));
5109 local_got_ents = bfd_zalloc (abfd, size);
5110 if (local_got_ents == NULL)
5112 elf_local_got_ents (abfd) = local_got_ents;
5115 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5117 struct got_entry *ent;
5119 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5120 if (ent->addend == r_addend
5121 && ent->owner == abfd
5122 && ent->tls_type == tls_type)
5126 bfd_size_type amt = sizeof (*ent);
5127 ent = bfd_alloc (abfd, amt);
5130 ent->next = local_got_ents[r_symndx];
5131 ent->addend = r_addend;
5133 ent->tls_type = tls_type;
5134 ent->is_indirect = FALSE;
5135 ent->got.refcount = 0;
5136 local_got_ents[r_symndx] = ent;
5138 ent->got.refcount += 1;
5141 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5142 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5143 local_got_tls_masks[r_symndx] |= tls_type;
5145 return local_plt + r_symndx;
5149 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5151 struct plt_entry *ent;
5153 for (ent = *plist; ent != NULL; ent = ent->next)
5154 if (ent->addend == addend)
5158 bfd_size_type amt = sizeof (*ent);
5159 ent = bfd_alloc (abfd, amt);
5163 ent->addend = addend;
5164 ent->plt.refcount = 0;
5167 ent->plt.refcount += 1;
5172 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5174 return (r_type == R_PPC64_REL24
5175 || r_type == R_PPC64_REL14
5176 || r_type == R_PPC64_REL14_BRTAKEN
5177 || r_type == R_PPC64_REL14_BRNTAKEN
5178 || r_type == R_PPC64_ADDR24
5179 || r_type == R_PPC64_ADDR14
5180 || r_type == R_PPC64_ADDR14_BRTAKEN
5181 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5184 /* Look through the relocs for a section during the first phase, and
5185 calculate needed space in the global offset table, procedure
5186 linkage table, and dynamic reloc sections. */
5189 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5190 asection *sec, const Elf_Internal_Rela *relocs)
5192 struct ppc_link_hash_table *htab;
5193 Elf_Internal_Shdr *symtab_hdr;
5194 struct elf_link_hash_entry **sym_hashes;
5195 const Elf_Internal_Rela *rel;
5196 const Elf_Internal_Rela *rel_end;
5198 asection **opd_sym_map;
5199 struct elf_link_hash_entry *tga, *dottga;
5201 if (info->relocatable)
5204 /* Don't do anything special with non-loaded, non-alloced sections.
5205 In particular, any relocs in such sections should not affect GOT
5206 and PLT reference counting (ie. we don't allow them to create GOT
5207 or PLT entries), there's no possibility or desire to optimize TLS
5208 relocs, and there's not much point in propagating relocs to shared
5209 libs that the dynamic linker won't relocate. */
5210 if ((sec->flags & SEC_ALLOC) == 0)
5213 BFD_ASSERT (is_ppc64_elf (abfd));
5215 htab = ppc_hash_table (info);
5219 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5220 FALSE, FALSE, TRUE);
5221 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5222 FALSE, FALSE, TRUE);
5223 symtab_hdr = &elf_symtab_hdr (abfd);
5224 sym_hashes = elf_sym_hashes (abfd);
5227 if (ppc64_elf_section_data (sec) != NULL
5228 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5229 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5231 rel_end = relocs + sec->reloc_count;
5232 for (rel = relocs; rel < rel_end; rel++)
5234 unsigned long r_symndx;
5235 struct elf_link_hash_entry *h;
5236 enum elf_ppc64_reloc_type r_type;
5238 struct _ppc64_elf_section_data *ppc64_sec;
5239 struct plt_entry **ifunc;
5241 r_symndx = ELF64_R_SYM (rel->r_info);
5242 if (r_symndx < symtab_hdr->sh_info)
5246 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5247 h = elf_follow_link (h);
5249 /* PR15323, ref flags aren't set for references in the same
5251 h->root.non_ir_ref = 1;
5253 if (h == htab->elf.hgot)
5254 sec->has_toc_reloc = 1;
5261 if (h->type == STT_GNU_IFUNC)
5264 ifunc = &h->plt.plist;
5269 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5274 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5276 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5277 rel->r_addend, PLT_IFUNC);
5282 r_type = ELF64_R_TYPE (rel->r_info);
5283 if (is_branch_reloc (r_type))
5285 if (h != NULL && (h == tga || h == dottga))
5288 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5289 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5290 /* We have a new-style __tls_get_addr call with a marker
5294 /* Mark this section as having an old-style call. */
5295 sec->has_tls_get_addr_call = 1;
5298 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5300 && !update_plt_info (abfd, ifunc, rel->r_addend))
5308 /* These special tls relocs tie a call to __tls_get_addr with
5309 its parameter symbol. */
5312 case R_PPC64_GOT_TLSLD16:
5313 case R_PPC64_GOT_TLSLD16_LO:
5314 case R_PPC64_GOT_TLSLD16_HI:
5315 case R_PPC64_GOT_TLSLD16_HA:
5316 tls_type = TLS_TLS | TLS_LD;
5319 case R_PPC64_GOT_TLSGD16:
5320 case R_PPC64_GOT_TLSGD16_LO:
5321 case R_PPC64_GOT_TLSGD16_HI:
5322 case R_PPC64_GOT_TLSGD16_HA:
5323 tls_type = TLS_TLS | TLS_GD;
5326 case R_PPC64_GOT_TPREL16_DS:
5327 case R_PPC64_GOT_TPREL16_LO_DS:
5328 case R_PPC64_GOT_TPREL16_HI:
5329 case R_PPC64_GOT_TPREL16_HA:
5330 if (!info->executable)
5331 info->flags |= DF_STATIC_TLS;
5332 tls_type = TLS_TLS | TLS_TPREL;
5335 case R_PPC64_GOT_DTPREL16_DS:
5336 case R_PPC64_GOT_DTPREL16_LO_DS:
5337 case R_PPC64_GOT_DTPREL16_HI:
5338 case R_PPC64_GOT_DTPREL16_HA:
5339 tls_type = TLS_TLS | TLS_DTPREL;
5341 sec->has_tls_reloc = 1;
5345 case R_PPC64_GOT16_DS:
5346 case R_PPC64_GOT16_HA:
5347 case R_PPC64_GOT16_HI:
5348 case R_PPC64_GOT16_LO:
5349 case R_PPC64_GOT16_LO_DS:
5350 /* This symbol requires a global offset table entry. */
5351 sec->has_toc_reloc = 1;
5352 if (r_type == R_PPC64_GOT_TLSLD16
5353 || r_type == R_PPC64_GOT_TLSGD16
5354 || r_type == R_PPC64_GOT_TPREL16_DS
5355 || r_type == R_PPC64_GOT_DTPREL16_DS
5356 || r_type == R_PPC64_GOT16
5357 || r_type == R_PPC64_GOT16_DS)
5359 htab->do_multi_toc = 1;
5360 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5363 if (ppc64_elf_tdata (abfd)->got == NULL
5364 && !create_got_section (abfd, info))
5369 struct ppc_link_hash_entry *eh;
5370 struct got_entry *ent;
5372 eh = (struct ppc_link_hash_entry *) h;
5373 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5374 if (ent->addend == rel->r_addend
5375 && ent->owner == abfd
5376 && ent->tls_type == tls_type)
5380 bfd_size_type amt = sizeof (*ent);
5381 ent = bfd_alloc (abfd, amt);
5384 ent->next = eh->elf.got.glist;
5385 ent->addend = rel->r_addend;
5387 ent->tls_type = tls_type;
5388 ent->is_indirect = FALSE;
5389 ent->got.refcount = 0;
5390 eh->elf.got.glist = ent;
5392 ent->got.refcount += 1;
5393 eh->tls_mask |= tls_type;
5396 /* This is a global offset table entry for a local symbol. */
5397 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5398 rel->r_addend, tls_type))
5401 /* We may also need a plt entry if the symbol turns out to be
5403 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5405 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5410 case R_PPC64_PLT16_HA:
5411 case R_PPC64_PLT16_HI:
5412 case R_PPC64_PLT16_LO:
5415 /* This symbol requires a procedure linkage table entry. We
5416 actually build the entry in adjust_dynamic_symbol,
5417 because this might be a case of linking PIC code without
5418 linking in any dynamic objects, in which case we don't
5419 need to generate a procedure linkage table after all. */
5422 /* It does not make sense to have a procedure linkage
5423 table entry for a local symbol. */
5424 bfd_set_error (bfd_error_bad_value);
5429 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5432 if (h->root.root.string[0] == '.'
5433 && h->root.root.string[1] != '\0')
5434 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5438 /* The following relocations don't need to propagate the
5439 relocation if linking a shared object since they are
5440 section relative. */
5441 case R_PPC64_SECTOFF:
5442 case R_PPC64_SECTOFF_LO:
5443 case R_PPC64_SECTOFF_HI:
5444 case R_PPC64_SECTOFF_HA:
5445 case R_PPC64_SECTOFF_DS:
5446 case R_PPC64_SECTOFF_LO_DS:
5447 case R_PPC64_DTPREL16:
5448 case R_PPC64_DTPREL16_LO:
5449 case R_PPC64_DTPREL16_HI:
5450 case R_PPC64_DTPREL16_HA:
5451 case R_PPC64_DTPREL16_DS:
5452 case R_PPC64_DTPREL16_LO_DS:
5453 case R_PPC64_DTPREL16_HIGH:
5454 case R_PPC64_DTPREL16_HIGHA:
5455 case R_PPC64_DTPREL16_HIGHER:
5456 case R_PPC64_DTPREL16_HIGHERA:
5457 case R_PPC64_DTPREL16_HIGHEST:
5458 case R_PPC64_DTPREL16_HIGHESTA:
5463 case R_PPC64_REL16_LO:
5464 case R_PPC64_REL16_HI:
5465 case R_PPC64_REL16_HA:
5468 /* Not supported as a dynamic relocation. */
5469 case R_PPC64_ADDR64_LOCAL:
5472 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5474 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5475 "in shared libraries and PIEs.\n"),
5476 abfd, sec, rel->r_offset,
5477 ppc64_elf_howto_table[r_type]->name);
5478 bfd_set_error (bfd_error_bad_value);
5484 case R_PPC64_TOC16_DS:
5485 htab->do_multi_toc = 1;
5486 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5487 case R_PPC64_TOC16_LO:
5488 case R_PPC64_TOC16_HI:
5489 case R_PPC64_TOC16_HA:
5490 case R_PPC64_TOC16_LO_DS:
5491 sec->has_toc_reloc = 1;
5494 /* This relocation describes the C++ object vtable hierarchy.
5495 Reconstruct it for later use during GC. */
5496 case R_PPC64_GNU_VTINHERIT:
5497 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5501 /* This relocation describes which C++ vtable entries are actually
5502 used. Record for later use during GC. */
5503 case R_PPC64_GNU_VTENTRY:
5504 BFD_ASSERT (h != NULL);
5506 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5511 case R_PPC64_REL14_BRTAKEN:
5512 case R_PPC64_REL14_BRNTAKEN:
5514 asection *dest = NULL;
5516 /* Heuristic: If jumping outside our section, chances are
5517 we are going to need a stub. */
5520 /* If the sym is weak it may be overridden later, so
5521 don't assume we know where a weak sym lives. */
5522 if (h->root.type == bfd_link_hash_defined)
5523 dest = h->root.u.def.section;
5527 Elf_Internal_Sym *isym;
5529 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5534 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5538 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5543 if (h != NULL && ifunc == NULL)
5545 /* We may need a .plt entry if the function this reloc
5546 refers to is in a shared lib. */
5547 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5550 if (h->root.root.string[0] == '.'
5551 && h->root.root.string[1] != '\0')
5552 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5553 if (h == tga || h == dottga)
5554 sec->has_tls_reloc = 1;
5558 case R_PPC64_TPREL64:
5559 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5560 if (!info->executable)
5561 info->flags |= DF_STATIC_TLS;
5564 case R_PPC64_DTPMOD64:
5565 if (rel + 1 < rel_end
5566 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5567 && rel[1].r_offset == rel->r_offset + 8)
5568 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5570 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5573 case R_PPC64_DTPREL64:
5574 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5576 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5577 && rel[-1].r_offset == rel->r_offset - 8)
5578 /* This is the second reloc of a dtpmod, dtprel pair.
5579 Don't mark with TLS_DTPREL. */
5583 sec->has_tls_reloc = 1;
5586 struct ppc_link_hash_entry *eh;
5587 eh = (struct ppc_link_hash_entry *) h;
5588 eh->tls_mask |= tls_type;
5591 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5592 rel->r_addend, tls_type))
5595 ppc64_sec = ppc64_elf_section_data (sec);
5596 if (ppc64_sec->sec_type != sec_toc)
5600 /* One extra to simplify get_tls_mask. */
5601 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5602 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5603 if (ppc64_sec->u.toc.symndx == NULL)
5605 amt = sec->size * sizeof (bfd_vma) / 8;
5606 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5607 if (ppc64_sec->u.toc.add == NULL)
5609 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5610 ppc64_sec->sec_type = sec_toc;
5612 BFD_ASSERT (rel->r_offset % 8 == 0);
5613 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5614 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5616 /* Mark the second slot of a GD or LD entry.
5617 -1 to indicate GD and -2 to indicate LD. */
5618 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5619 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5620 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5621 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5624 case R_PPC64_TPREL16:
5625 case R_PPC64_TPREL16_LO:
5626 case R_PPC64_TPREL16_HI:
5627 case R_PPC64_TPREL16_HA:
5628 case R_PPC64_TPREL16_DS:
5629 case R_PPC64_TPREL16_LO_DS:
5630 case R_PPC64_TPREL16_HIGH:
5631 case R_PPC64_TPREL16_HIGHA:
5632 case R_PPC64_TPREL16_HIGHER:
5633 case R_PPC64_TPREL16_HIGHERA:
5634 case R_PPC64_TPREL16_HIGHEST:
5635 case R_PPC64_TPREL16_HIGHESTA:
5638 if (!info->executable)
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;
6997 else if (abiversion (info->output_bfd) == 2)
6999 /* After adjust_dynamic_symbol, non_got_ref set in the
7000 non-shared case means that we have allocated space in
7001 .dynbss for the symbol and thus dyn_relocs for this
7002 symbol should be discarded.
7003 If we get here we know we are making a PLT entry for this
7004 symbol, and in an executable we'd normally resolve
7005 relocations against this symbol to the PLT entry. Allow
7006 dynamic relocs if the reference is weak, and the dynamic
7007 relocs will not cause text relocation. */
7008 if (!h->ref_regular_nonweak
7010 && h->type != STT_GNU_IFUNC
7011 && !readonly_dynrelocs (h))
7014 /* If making a plt entry, then we don't need copy relocs. */
7019 h->plt.plist = NULL;
7021 /* If this is a weak symbol, and there is a real definition, the
7022 processor independent code will have arranged for us to see the
7023 real definition first, and we can just use the same value. */
7024 if (h->u.weakdef != NULL)
7026 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7027 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7028 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7029 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7030 if (ELIMINATE_COPY_RELOCS)
7031 h->non_got_ref = h->u.weakdef->non_got_ref;
7035 /* If we are creating a shared library, we must presume that the
7036 only references to the symbol are via the global offset table.
7037 For such cases we need not do anything here; the relocations will
7038 be handled correctly by relocate_section. */
7042 /* If there are no references to this symbol that do not use the
7043 GOT, we don't need to generate a copy reloc. */
7044 if (!h->non_got_ref)
7047 /* Don't generate a copy reloc for symbols defined in the executable. */
7048 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7051 /* If we didn't find any dynamic relocs in read-only sections, then
7052 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7053 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7059 if (h->plt.plist != NULL)
7061 /* We should never get here, but unfortunately there are versions
7062 of gcc out there that improperly (for this ABI) put initialized
7063 function pointers, vtable refs and suchlike in read-only
7064 sections. Allow them to proceed, but warn that this might
7065 break at runtime. */
7066 info->callbacks->einfo
7067 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7068 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7069 h->root.root.string);
7072 /* This is a reference to a symbol defined by a dynamic object which
7073 is not a function. */
7075 /* We must allocate the symbol in our .dynbss section, which will
7076 become part of the .bss section of the executable. There will be
7077 an entry for this symbol in the .dynsym section. The dynamic
7078 object will contain position independent code, so all references
7079 from the dynamic object to this symbol will go through the global
7080 offset table. The dynamic linker will use the .dynsym entry to
7081 determine the address it must put in the global offset table, so
7082 both the dynamic object and the regular object will refer to the
7083 same memory location for the variable. */
7085 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7086 to copy the initial value out of the dynamic object and into the
7087 runtime process image. We need to remember the offset into the
7088 .rela.bss section we are going to use. */
7089 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7091 htab->relbss->size += sizeof (Elf64_External_Rela);
7097 return _bfd_elf_adjust_dynamic_copy (h, s);
7100 /* If given a function descriptor symbol, hide both the function code
7101 sym and the descriptor. */
7103 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7104 struct elf_link_hash_entry *h,
7105 bfd_boolean force_local)
7107 struct ppc_link_hash_entry *eh;
7108 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7110 eh = (struct ppc_link_hash_entry *) h;
7111 if (eh->is_func_descriptor)
7113 struct ppc_link_hash_entry *fh = eh->oh;
7118 struct ppc_link_hash_table *htab;
7121 /* We aren't supposed to use alloca in BFD because on
7122 systems which do not have alloca the version in libiberty
7123 calls xmalloc, which might cause the program to crash
7124 when it runs out of memory. This function doesn't have a
7125 return status, so there's no way to gracefully return an
7126 error. So cheat. We know that string[-1] can be safely
7127 accessed; It's either a string in an ELF string table,
7128 or allocated in an objalloc structure. */
7130 p = eh->elf.root.root.string - 1;
7133 htab = ppc_hash_table (info);
7137 fh = (struct ppc_link_hash_entry *)
7138 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7141 /* Unfortunately, if it so happens that the string we were
7142 looking for was allocated immediately before this string,
7143 then we overwrote the string terminator. That's the only
7144 reason the lookup should fail. */
7147 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7148 while (q >= eh->elf.root.root.string && *q == *p)
7150 if (q < eh->elf.root.root.string && *p == '.')
7151 fh = (struct ppc_link_hash_entry *)
7152 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7161 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7166 get_sym_h (struct elf_link_hash_entry **hp,
7167 Elf_Internal_Sym **symp,
7169 unsigned char **tls_maskp,
7170 Elf_Internal_Sym **locsymsp,
7171 unsigned long r_symndx,
7174 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7176 if (r_symndx >= symtab_hdr->sh_info)
7178 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7179 struct elf_link_hash_entry *h;
7181 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7182 h = elf_follow_link (h);
7190 if (symsecp != NULL)
7192 asection *symsec = NULL;
7193 if (h->root.type == bfd_link_hash_defined
7194 || h->root.type == bfd_link_hash_defweak)
7195 symsec = h->root.u.def.section;
7199 if (tls_maskp != NULL)
7201 struct ppc_link_hash_entry *eh;
7203 eh = (struct ppc_link_hash_entry *) h;
7204 *tls_maskp = &eh->tls_mask;
7209 Elf_Internal_Sym *sym;
7210 Elf_Internal_Sym *locsyms = *locsymsp;
7212 if (locsyms == NULL)
7214 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7215 if (locsyms == NULL)
7216 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7217 symtab_hdr->sh_info,
7218 0, NULL, NULL, NULL);
7219 if (locsyms == NULL)
7221 *locsymsp = locsyms;
7223 sym = locsyms + r_symndx;
7231 if (symsecp != NULL)
7232 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7234 if (tls_maskp != NULL)
7236 struct got_entry **lgot_ents;
7237 unsigned char *tls_mask;
7240 lgot_ents = elf_local_got_ents (ibfd);
7241 if (lgot_ents != NULL)
7243 struct plt_entry **local_plt = (struct plt_entry **)
7244 (lgot_ents + symtab_hdr->sh_info);
7245 unsigned char *lgot_masks = (unsigned char *)
7246 (local_plt + symtab_hdr->sh_info);
7247 tls_mask = &lgot_masks[r_symndx];
7249 *tls_maskp = tls_mask;
7255 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7256 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7257 type suitable for optimization, and 1 otherwise. */
7260 get_tls_mask (unsigned char **tls_maskp,
7261 unsigned long *toc_symndx,
7262 bfd_vma *toc_addend,
7263 Elf_Internal_Sym **locsymsp,
7264 const Elf_Internal_Rela *rel,
7267 unsigned long r_symndx;
7269 struct elf_link_hash_entry *h;
7270 Elf_Internal_Sym *sym;
7274 r_symndx = ELF64_R_SYM (rel->r_info);
7275 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7278 if ((*tls_maskp != NULL && **tls_maskp != 0)
7280 || ppc64_elf_section_data (sec) == NULL
7281 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7284 /* Look inside a TOC section too. */
7287 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7288 off = h->root.u.def.value;
7291 off = sym->st_value;
7292 off += rel->r_addend;
7293 BFD_ASSERT (off % 8 == 0);
7294 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7295 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7296 if (toc_symndx != NULL)
7297 *toc_symndx = r_symndx;
7298 if (toc_addend != NULL)
7299 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7300 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7302 if ((h == NULL || is_static_defined (h))
7303 && (next_r == -1 || next_r == -2))
7308 /* Find (or create) an entry in the tocsave hash table. */
7310 static struct tocsave_entry *
7311 tocsave_find (struct ppc_link_hash_table *htab,
7312 enum insert_option insert,
7313 Elf_Internal_Sym **local_syms,
7314 const Elf_Internal_Rela *irela,
7317 unsigned long r_indx;
7318 struct elf_link_hash_entry *h;
7319 Elf_Internal_Sym *sym;
7320 struct tocsave_entry ent, *p;
7322 struct tocsave_entry **slot;
7324 r_indx = ELF64_R_SYM (irela->r_info);
7325 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7327 if (ent.sec == NULL || ent.sec->output_section == NULL)
7329 (*_bfd_error_handler)
7330 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7335 ent.offset = h->root.u.def.value;
7337 ent.offset = sym->st_value;
7338 ent.offset += irela->r_addend;
7340 hash = tocsave_htab_hash (&ent);
7341 slot = ((struct tocsave_entry **)
7342 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7348 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7357 /* Adjust all global syms defined in opd sections. In gcc generated
7358 code for the old ABI, these will already have been done. */
7361 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7363 struct ppc_link_hash_entry *eh;
7365 struct _opd_sec_data *opd;
7367 if (h->root.type == bfd_link_hash_indirect)
7370 if (h->root.type != bfd_link_hash_defined
7371 && h->root.type != bfd_link_hash_defweak)
7374 eh = (struct ppc_link_hash_entry *) h;
7375 if (eh->adjust_done)
7378 sym_sec = eh->elf.root.u.def.section;
7379 opd = get_opd_info (sym_sec);
7380 if (opd != NULL && opd->adjust != NULL)
7382 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7385 /* This entry has been deleted. */
7386 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7389 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7390 if (discarded_section (dsec))
7392 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7396 eh->elf.root.u.def.value = 0;
7397 eh->elf.root.u.def.section = dsec;
7400 eh->elf.root.u.def.value += adjust;
7401 eh->adjust_done = 1;
7406 /* Handles decrementing dynamic reloc counts for the reloc specified by
7407 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7408 have already been determined. */
7411 dec_dynrel_count (bfd_vma r_info,
7413 struct bfd_link_info *info,
7414 Elf_Internal_Sym **local_syms,
7415 struct elf_link_hash_entry *h,
7416 Elf_Internal_Sym *sym)
7418 enum elf_ppc64_reloc_type r_type;
7419 asection *sym_sec = NULL;
7421 /* Can this reloc be dynamic? This switch, and later tests here
7422 should be kept in sync with the code in check_relocs. */
7423 r_type = ELF64_R_TYPE (r_info);
7429 case R_PPC64_TPREL16:
7430 case R_PPC64_TPREL16_LO:
7431 case R_PPC64_TPREL16_HI:
7432 case R_PPC64_TPREL16_HA:
7433 case R_PPC64_TPREL16_DS:
7434 case R_PPC64_TPREL16_LO_DS:
7435 case R_PPC64_TPREL16_HIGH:
7436 case R_PPC64_TPREL16_HIGHA:
7437 case R_PPC64_TPREL16_HIGHER:
7438 case R_PPC64_TPREL16_HIGHERA:
7439 case R_PPC64_TPREL16_HIGHEST:
7440 case R_PPC64_TPREL16_HIGHESTA:
7444 case R_PPC64_TPREL64:
7445 case R_PPC64_DTPMOD64:
7446 case R_PPC64_DTPREL64:
7447 case R_PPC64_ADDR64:
7451 case R_PPC64_ADDR14:
7452 case R_PPC64_ADDR14_BRNTAKEN:
7453 case R_PPC64_ADDR14_BRTAKEN:
7454 case R_PPC64_ADDR16:
7455 case R_PPC64_ADDR16_DS:
7456 case R_PPC64_ADDR16_HA:
7457 case R_PPC64_ADDR16_HI:
7458 case R_PPC64_ADDR16_HIGH:
7459 case R_PPC64_ADDR16_HIGHA:
7460 case R_PPC64_ADDR16_HIGHER:
7461 case R_PPC64_ADDR16_HIGHERA:
7462 case R_PPC64_ADDR16_HIGHEST:
7463 case R_PPC64_ADDR16_HIGHESTA:
7464 case R_PPC64_ADDR16_LO:
7465 case R_PPC64_ADDR16_LO_DS:
7466 case R_PPC64_ADDR24:
7467 case R_PPC64_ADDR32:
7468 case R_PPC64_UADDR16:
7469 case R_PPC64_UADDR32:
7470 case R_PPC64_UADDR64:
7475 if (local_syms != NULL)
7477 unsigned long r_symndx;
7478 bfd *ibfd = sec->owner;
7480 r_symndx = ELF64_R_SYM (r_info);
7481 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7486 && (must_be_dyn_reloc (info, r_type)
7488 && (!SYMBOLIC_BIND (info, h)
7489 || h->root.type == bfd_link_hash_defweak
7490 || !h->def_regular))))
7491 || (ELIMINATE_COPY_RELOCS
7494 && (h->root.type == bfd_link_hash_defweak
7495 || !h->def_regular)))
7502 struct elf_dyn_relocs *p;
7503 struct elf_dyn_relocs **pp;
7504 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7506 /* elf_gc_sweep may have already removed all dyn relocs associated
7507 with local syms for a given section. Also, symbol flags are
7508 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7509 report a dynreloc miscount. */
7510 if (*pp == NULL && info->gc_sections)
7513 while ((p = *pp) != NULL)
7517 if (!must_be_dyn_reloc (info, r_type))
7529 struct ppc_dyn_relocs *p;
7530 struct ppc_dyn_relocs **pp;
7532 bfd_boolean is_ifunc;
7534 if (local_syms == NULL)
7535 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7536 if (sym_sec == NULL)
7539 vpp = &elf_section_data (sym_sec)->local_dynrel;
7540 pp = (struct ppc_dyn_relocs **) vpp;
7542 if (*pp == NULL && info->gc_sections)
7545 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7546 while ((p = *pp) != NULL)
7548 if (p->sec == sec && p->ifunc == is_ifunc)
7559 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7561 bfd_set_error (bfd_error_bad_value);
7565 /* Remove unused Official Procedure Descriptor entries. Currently we
7566 only remove those associated with functions in discarded link-once
7567 sections, or weakly defined functions that have been overridden. It
7568 would be possible to remove many more entries for statically linked
7572 ppc64_elf_edit_opd (struct bfd_link_info *info)
7575 bfd_boolean some_edited = FALSE;
7576 asection *need_pad = NULL;
7577 struct ppc_link_hash_table *htab;
7579 htab = ppc_hash_table (info);
7583 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7586 Elf_Internal_Rela *relstart, *rel, *relend;
7587 Elf_Internal_Shdr *symtab_hdr;
7588 Elf_Internal_Sym *local_syms;
7590 struct _opd_sec_data *opd;
7591 bfd_boolean need_edit, add_aux_fields;
7592 bfd_size_type cnt_16b = 0;
7594 if (!is_ppc64_elf (ibfd))
7597 sec = bfd_get_section_by_name (ibfd, ".opd");
7598 if (sec == NULL || sec->size == 0)
7601 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7604 if (sec->output_section == bfd_abs_section_ptr)
7607 /* Look through the section relocs. */
7608 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7612 symtab_hdr = &elf_symtab_hdr (ibfd);
7614 /* Read the relocations. */
7615 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7617 if (relstart == NULL)
7620 /* First run through the relocs to check they are sane, and to
7621 determine whether we need to edit this opd section. */
7625 relend = relstart + sec->reloc_count;
7626 for (rel = relstart; rel < relend; )
7628 enum elf_ppc64_reloc_type r_type;
7629 unsigned long r_symndx;
7631 struct elf_link_hash_entry *h;
7632 Elf_Internal_Sym *sym;
7634 /* .opd contains a regular array of 16 or 24 byte entries. We're
7635 only interested in the reloc pointing to a function entry
7637 if (rel->r_offset != offset
7638 || rel + 1 >= relend
7639 || (rel + 1)->r_offset != offset + 8)
7641 /* If someone messes with .opd alignment then after a
7642 "ld -r" we might have padding in the middle of .opd.
7643 Also, there's nothing to prevent someone putting
7644 something silly in .opd with the assembler. No .opd
7645 optimization for them! */
7647 (*_bfd_error_handler)
7648 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7653 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7654 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7656 (*_bfd_error_handler)
7657 (_("%B: unexpected reloc type %u in .opd section"),
7663 r_symndx = ELF64_R_SYM (rel->r_info);
7664 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7668 if (sym_sec == NULL || sym_sec->owner == NULL)
7670 const char *sym_name;
7672 sym_name = h->root.root.string;
7674 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7677 (*_bfd_error_handler)
7678 (_("%B: undefined sym `%s' in .opd section"),
7684 /* opd entries are always for functions defined in the
7685 current input bfd. If the symbol isn't defined in the
7686 input bfd, then we won't be using the function in this
7687 bfd; It must be defined in a linkonce section in another
7688 bfd, or is weak. It's also possible that we are
7689 discarding the function due to a linker script /DISCARD/,
7690 which we test for via the output_section. */
7691 if (sym_sec->owner != ibfd
7692 || sym_sec->output_section == bfd_abs_section_ptr)
7697 || (rel + 1 == relend && rel->r_offset == offset + 16))
7699 if (sec->size == offset + 24)
7704 if (rel == relend && sec->size == offset + 16)
7712 if (rel->r_offset == offset + 24)
7714 else if (rel->r_offset != offset + 16)
7716 else if (rel + 1 < relend
7717 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7718 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7723 else if (rel + 2 < relend
7724 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7725 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7734 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7736 if (need_edit || add_aux_fields)
7738 Elf_Internal_Rela *write_rel;
7739 Elf_Internal_Shdr *rel_hdr;
7740 bfd_byte *rptr, *wptr;
7741 bfd_byte *new_contents;
7746 new_contents = NULL;
7747 amt = sec->size * sizeof (long) / 8;
7748 opd = &ppc64_elf_section_data (sec)->u.opd;
7749 opd->adjust = bfd_zalloc (sec->owner, amt);
7750 if (opd->adjust == NULL)
7752 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7754 /* This seems a waste of time as input .opd sections are all
7755 zeros as generated by gcc, but I suppose there's no reason
7756 this will always be so. We might start putting something in
7757 the third word of .opd entries. */
7758 if ((sec->flags & SEC_IN_MEMORY) == 0)
7761 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7766 if (local_syms != NULL
7767 && symtab_hdr->contents != (unsigned char *) local_syms)
7769 if (elf_section_data (sec)->relocs != relstart)
7773 sec->contents = loc;
7774 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7777 elf_section_data (sec)->relocs = relstart;
7779 new_contents = sec->contents;
7782 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7783 if (new_contents == NULL)
7787 wptr = new_contents;
7788 rptr = sec->contents;
7790 write_rel = relstart;
7794 for (rel = relstart; rel < relend; rel++)
7796 unsigned long r_symndx;
7798 struct elf_link_hash_entry *h;
7799 Elf_Internal_Sym *sym;
7801 r_symndx = ELF64_R_SYM (rel->r_info);
7802 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7806 if (rel->r_offset == offset)
7808 struct ppc_link_hash_entry *fdh = NULL;
7810 /* See if the .opd entry is full 24 byte or
7811 16 byte (with fd_aux entry overlapped with next
7814 if ((rel + 2 == relend && sec->size == offset + 16)
7815 || (rel + 3 < relend
7816 && rel[2].r_offset == offset + 16
7817 && rel[3].r_offset == offset + 24
7818 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7819 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7823 && h->root.root.string[0] == '.')
7825 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7827 && fdh->elf.root.type != bfd_link_hash_defined
7828 && fdh->elf.root.type != bfd_link_hash_defweak)
7832 skip = (sym_sec->owner != ibfd
7833 || sym_sec->output_section == bfd_abs_section_ptr);
7836 if (fdh != NULL && sym_sec->owner == ibfd)
7838 /* Arrange for the function descriptor sym
7840 fdh->elf.root.u.def.value = 0;
7841 fdh->elf.root.u.def.section = sym_sec;
7843 opd->adjust[rel->r_offset / 8] = -1;
7847 /* We'll be keeping this opd entry. */
7851 /* Redefine the function descriptor symbol to
7852 this location in the opd section. It is
7853 necessary to update the value here rather
7854 than using an array of adjustments as we do
7855 for local symbols, because various places
7856 in the generic ELF code use the value
7857 stored in u.def.value. */
7858 fdh->elf.root.u.def.value = wptr - new_contents;
7859 fdh->adjust_done = 1;
7862 /* Local syms are a bit tricky. We could
7863 tweak them as they can be cached, but
7864 we'd need to look through the local syms
7865 for the function descriptor sym which we
7866 don't have at the moment. So keep an
7867 array of adjustments. */
7868 opd->adjust[rel->r_offset / 8]
7869 = (wptr - new_contents) - (rptr - sec->contents);
7872 memcpy (wptr, rptr, opd_ent_size);
7873 wptr += opd_ent_size;
7874 if (add_aux_fields && opd_ent_size == 16)
7876 memset (wptr, '\0', 8);
7880 rptr += opd_ent_size;
7881 offset += opd_ent_size;
7887 && !info->relocatable
7888 && !dec_dynrel_count (rel->r_info, sec, info,
7894 /* We need to adjust any reloc offsets to point to the
7895 new opd entries. While we're at it, we may as well
7896 remove redundant relocs. */
7897 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7898 if (write_rel != rel)
7899 memcpy (write_rel, rel, sizeof (*rel));
7904 sec->size = wptr - new_contents;
7905 sec->reloc_count = write_rel - relstart;
7908 free (sec->contents);
7909 sec->contents = new_contents;
7912 /* Fudge the header size too, as this is used later in
7913 elf_bfd_final_link if we are emitting relocs. */
7914 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7915 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7918 else if (elf_section_data (sec)->relocs != relstart)
7921 if (local_syms != NULL
7922 && symtab_hdr->contents != (unsigned char *) local_syms)
7924 if (!info->keep_memory)
7927 symtab_hdr->contents = (unsigned char *) local_syms;
7932 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7934 /* If we are doing a final link and the last .opd entry is just 16 byte
7935 long, add a 8 byte padding after it. */
7936 if (need_pad != NULL && !info->relocatable)
7940 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7942 BFD_ASSERT (need_pad->size > 0);
7944 p = bfd_malloc (need_pad->size + 8);
7948 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7949 p, 0, need_pad->size))
7952 need_pad->contents = p;
7953 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7957 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7961 need_pad->contents = p;
7964 memset (need_pad->contents + need_pad->size, 0, 8);
7965 need_pad->size += 8;
7971 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7974 ppc64_elf_tls_setup (struct bfd_link_info *info)
7976 struct ppc_link_hash_table *htab;
7978 htab = ppc_hash_table (info);
7982 if (abiversion (info->output_bfd) == 1)
7985 if (htab->params->no_multi_toc)
7986 htab->do_multi_toc = 0;
7987 else if (!htab->do_multi_toc)
7988 htab->params->no_multi_toc = 1;
7990 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7991 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7992 FALSE, FALSE, TRUE));
7993 /* Move dynamic linking info to the function descriptor sym. */
7994 if (htab->tls_get_addr != NULL)
7995 func_desc_adjust (&htab->tls_get_addr->elf, info);
7996 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7997 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7998 FALSE, FALSE, TRUE));
7999 if (!htab->params->no_tls_get_addr_opt)
8001 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8003 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8004 FALSE, FALSE, TRUE);
8006 func_desc_adjust (opt, info);
8007 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8008 FALSE, FALSE, TRUE);
8010 && (opt_fd->root.type == bfd_link_hash_defined
8011 || opt_fd->root.type == bfd_link_hash_defweak))
8013 /* If glibc supports an optimized __tls_get_addr call stub,
8014 signalled by the presence of __tls_get_addr_opt, and we'll
8015 be calling __tls_get_addr via a plt call stub, then
8016 make __tls_get_addr point to __tls_get_addr_opt. */
8017 tga_fd = &htab->tls_get_addr_fd->elf;
8018 if (htab->elf.dynamic_sections_created
8020 && (tga_fd->type == STT_FUNC
8021 || tga_fd->needs_plt)
8022 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8023 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8024 && tga_fd->root.type == bfd_link_hash_undefweak)))
8026 struct plt_entry *ent;
8028 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8029 if (ent->plt.refcount > 0)
8033 tga_fd->root.type = bfd_link_hash_indirect;
8034 tga_fd->root.u.i.link = &opt_fd->root;
8035 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8036 if (opt_fd->dynindx != -1)
8038 /* Use __tls_get_addr_opt in dynamic relocations. */
8039 opt_fd->dynindx = -1;
8040 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8041 opt_fd->dynstr_index);
8042 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8045 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8046 tga = &htab->tls_get_addr->elf;
8047 if (opt != NULL && tga != NULL)
8049 tga->root.type = bfd_link_hash_indirect;
8050 tga->root.u.i.link = &opt->root;
8051 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8052 _bfd_elf_link_hash_hide_symbol (info, opt,
8054 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8056 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8057 htab->tls_get_addr_fd->is_func_descriptor = 1;
8058 if (htab->tls_get_addr != NULL)
8060 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8061 htab->tls_get_addr->is_func = 1;
8067 htab->params->no_tls_get_addr_opt = TRUE;
8069 return _bfd_elf_tls_setup (info->output_bfd, info);
8072 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8076 branch_reloc_hash_match (const bfd *ibfd,
8077 const Elf_Internal_Rela *rel,
8078 const struct ppc_link_hash_entry *hash1,
8079 const struct ppc_link_hash_entry *hash2)
8081 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8082 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8083 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8085 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8087 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8088 struct elf_link_hash_entry *h;
8090 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8091 h = elf_follow_link (h);
8092 if (h == &hash1->elf || h == &hash2->elf)
8098 /* Run through all the TLS relocs looking for optimization
8099 opportunities. The linker has been hacked (see ppc64elf.em) to do
8100 a preliminary section layout so that we know the TLS segment
8101 offsets. We can't optimize earlier because some optimizations need
8102 to know the tp offset, and we need to optimize before allocating
8103 dynamic relocations. */
8106 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8110 struct ppc_link_hash_table *htab;
8111 unsigned char *toc_ref;
8114 if (info->relocatable || !info->executable)
8117 htab = ppc_hash_table (info);
8121 /* Make two passes over the relocs. On the first pass, mark toc
8122 entries involved with tls relocs, and check that tls relocs
8123 involved in setting up a tls_get_addr call are indeed followed by
8124 such a call. If they are not, we can't do any tls optimization.
8125 On the second pass twiddle tls_mask flags to notify
8126 relocate_section that optimization can be done, and adjust got
8127 and plt refcounts. */
8129 for (pass = 0; pass < 2; ++pass)
8130 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8132 Elf_Internal_Sym *locsyms = NULL;
8133 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8135 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8136 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8138 Elf_Internal_Rela *relstart, *rel, *relend;
8139 bfd_boolean found_tls_get_addr_arg = 0;
8141 /* Read the relocations. */
8142 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8144 if (relstart == NULL)
8150 relend = relstart + sec->reloc_count;
8151 for (rel = relstart; rel < relend; rel++)
8153 enum elf_ppc64_reloc_type r_type;
8154 unsigned long r_symndx;
8155 struct elf_link_hash_entry *h;
8156 Elf_Internal_Sym *sym;
8158 unsigned char *tls_mask;
8159 unsigned char tls_set, tls_clear, tls_type = 0;
8161 bfd_boolean ok_tprel, is_local;
8162 long toc_ref_index = 0;
8163 int expecting_tls_get_addr = 0;
8164 bfd_boolean ret = FALSE;
8166 r_symndx = ELF64_R_SYM (rel->r_info);
8167 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8171 if (elf_section_data (sec)->relocs != relstart)
8173 if (toc_ref != NULL)
8176 && (elf_symtab_hdr (ibfd).contents
8177 != (unsigned char *) locsyms))
8184 if (h->root.type == bfd_link_hash_defined
8185 || h->root.type == bfd_link_hash_defweak)
8186 value = h->root.u.def.value;
8187 else if (h->root.type == bfd_link_hash_undefweak)
8191 found_tls_get_addr_arg = 0;
8196 /* Symbols referenced by TLS relocs must be of type
8197 STT_TLS. So no need for .opd local sym adjust. */
8198 value = sym->st_value;
8207 && h->root.type == bfd_link_hash_undefweak)
8211 value += sym_sec->output_offset;
8212 value += sym_sec->output_section->vma;
8213 value -= htab->elf.tls_sec->vma;
8214 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8215 < (bfd_vma) 1 << 32);
8219 r_type = ELF64_R_TYPE (rel->r_info);
8220 /* If this section has old-style __tls_get_addr calls
8221 without marker relocs, then check that each
8222 __tls_get_addr call reloc is preceded by a reloc
8223 that conceivably belongs to the __tls_get_addr arg
8224 setup insn. If we don't find matching arg setup
8225 relocs, don't do any tls optimization. */
8227 && sec->has_tls_get_addr_call
8229 && (h == &htab->tls_get_addr->elf
8230 || h == &htab->tls_get_addr_fd->elf)
8231 && !found_tls_get_addr_arg
8232 && is_branch_reloc (r_type))
8234 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8235 "TLS optimization disabled\n"),
8236 ibfd, sec, rel->r_offset);
8241 found_tls_get_addr_arg = 0;
8244 case R_PPC64_GOT_TLSLD16:
8245 case R_PPC64_GOT_TLSLD16_LO:
8246 expecting_tls_get_addr = 1;
8247 found_tls_get_addr_arg = 1;
8250 case R_PPC64_GOT_TLSLD16_HI:
8251 case R_PPC64_GOT_TLSLD16_HA:
8252 /* These relocs should never be against a symbol
8253 defined in a shared lib. Leave them alone if
8254 that turns out to be the case. */
8261 tls_type = TLS_TLS | TLS_LD;
8264 case R_PPC64_GOT_TLSGD16:
8265 case R_PPC64_GOT_TLSGD16_LO:
8266 expecting_tls_get_addr = 1;
8267 found_tls_get_addr_arg = 1;
8270 case R_PPC64_GOT_TLSGD16_HI:
8271 case R_PPC64_GOT_TLSGD16_HA:
8277 tls_set = TLS_TLS | TLS_TPRELGD;
8279 tls_type = TLS_TLS | TLS_GD;
8282 case R_PPC64_GOT_TPREL16_DS:
8283 case R_PPC64_GOT_TPREL16_LO_DS:
8284 case R_PPC64_GOT_TPREL16_HI:
8285 case R_PPC64_GOT_TPREL16_HA:
8290 tls_clear = TLS_TPREL;
8291 tls_type = TLS_TLS | TLS_TPREL;
8298 found_tls_get_addr_arg = 1;
8303 case R_PPC64_TOC16_LO:
8304 if (sym_sec == NULL || sym_sec != toc)
8307 /* Mark this toc entry as referenced by a TLS
8308 code sequence. We can do that now in the
8309 case of R_PPC64_TLS, and after checking for
8310 tls_get_addr for the TOC16 relocs. */
8311 if (toc_ref == NULL)
8312 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8313 if (toc_ref == NULL)
8317 value = h->root.u.def.value;
8319 value = sym->st_value;
8320 value += rel->r_addend;
8321 BFD_ASSERT (value < toc->size && value % 8 == 0);
8322 toc_ref_index = (value + toc->output_offset) / 8;
8323 if (r_type == R_PPC64_TLS
8324 || r_type == R_PPC64_TLSGD
8325 || r_type == R_PPC64_TLSLD)
8327 toc_ref[toc_ref_index] = 1;
8331 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8336 expecting_tls_get_addr = 2;
8339 case R_PPC64_TPREL64:
8343 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8348 tls_set = TLS_EXPLICIT;
8349 tls_clear = TLS_TPREL;
8354 case R_PPC64_DTPMOD64:
8358 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8360 if (rel + 1 < relend
8362 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8363 && rel[1].r_offset == rel->r_offset + 8)
8367 tls_set = TLS_EXPLICIT | TLS_GD;
8370 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8379 tls_set = TLS_EXPLICIT;
8390 if (!expecting_tls_get_addr
8391 || !sec->has_tls_get_addr_call)
8394 if (rel + 1 < relend
8395 && branch_reloc_hash_match (ibfd, rel + 1,
8397 htab->tls_get_addr_fd))
8399 if (expecting_tls_get_addr == 2)
8401 /* Check for toc tls entries. */
8402 unsigned char *toc_tls;
8405 retval = get_tls_mask (&toc_tls, NULL, NULL,
8410 if (toc_tls != NULL)
8412 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8413 found_tls_get_addr_arg = 1;
8415 toc_ref[toc_ref_index] = 1;
8421 if (expecting_tls_get_addr != 1)
8424 /* Uh oh, we didn't find the expected call. We
8425 could just mark this symbol to exclude it
8426 from tls optimization but it's safer to skip
8427 the entire optimization. */
8428 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8429 "TLS optimization disabled\n"),
8430 ibfd, sec, rel->r_offset);
8435 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8437 struct plt_entry *ent;
8438 for (ent = htab->tls_get_addr->elf.plt.plist;
8441 if (ent->addend == 0)
8443 if (ent->plt.refcount > 0)
8445 ent->plt.refcount -= 1;
8446 expecting_tls_get_addr = 0;
8452 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8454 struct plt_entry *ent;
8455 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8458 if (ent->addend == 0)
8460 if (ent->plt.refcount > 0)
8461 ent->plt.refcount -= 1;
8469 if ((tls_set & TLS_EXPLICIT) == 0)
8471 struct got_entry *ent;
8473 /* Adjust got entry for this reloc. */
8477 ent = elf_local_got_ents (ibfd)[r_symndx];
8479 for (; ent != NULL; ent = ent->next)
8480 if (ent->addend == rel->r_addend
8481 && ent->owner == ibfd
8482 && ent->tls_type == tls_type)
8489 /* We managed to get rid of a got entry. */
8490 if (ent->got.refcount > 0)
8491 ent->got.refcount -= 1;
8496 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8497 we'll lose one or two dyn relocs. */
8498 if (!dec_dynrel_count (rel->r_info, sec, info,
8502 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8504 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8510 *tls_mask |= tls_set;
8511 *tls_mask &= ~tls_clear;
8514 if (elf_section_data (sec)->relocs != relstart)
8519 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8521 if (!info->keep_memory)
8524 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8528 if (toc_ref != NULL)
8533 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8534 the values of any global symbols in a toc section that has been
8535 edited. Globals in toc sections should be a rarity, so this function
8536 sets a flag if any are found in toc sections other than the one just
8537 edited, so that futher hash table traversals can be avoided. */
8539 struct adjust_toc_info
8542 unsigned long *skip;
8543 bfd_boolean global_toc_syms;
8546 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8549 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8551 struct ppc_link_hash_entry *eh;
8552 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8555 if (h->root.type != bfd_link_hash_defined
8556 && h->root.type != bfd_link_hash_defweak)
8559 eh = (struct ppc_link_hash_entry *) h;
8560 if (eh->adjust_done)
8563 if (eh->elf.root.u.def.section == toc_inf->toc)
8565 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8566 i = toc_inf->toc->rawsize >> 3;
8568 i = eh->elf.root.u.def.value >> 3;
8570 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8572 (*_bfd_error_handler)
8573 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8576 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8577 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8580 eh->elf.root.u.def.value -= toc_inf->skip[i];
8581 eh->adjust_done = 1;
8583 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8584 toc_inf->global_toc_syms = TRUE;
8589 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8592 ok_lo_toc_insn (unsigned int insn)
8594 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8595 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8596 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8597 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8598 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8599 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8600 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8601 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8602 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8603 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8604 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8605 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8606 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8607 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8608 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8610 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8611 && ((insn & 3) == 0 || (insn & 3) == 3))
8612 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8615 /* Examine all relocs referencing .toc sections in order to remove
8616 unused .toc entries. */
8619 ppc64_elf_edit_toc (struct bfd_link_info *info)
8622 struct adjust_toc_info toc_inf;
8623 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8625 htab->do_toc_opt = 1;
8626 toc_inf.global_toc_syms = TRUE;
8627 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8629 asection *toc, *sec;
8630 Elf_Internal_Shdr *symtab_hdr;
8631 Elf_Internal_Sym *local_syms;
8632 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8633 unsigned long *skip, *drop;
8634 unsigned char *used;
8635 unsigned char *keep, last, some_unused;
8637 if (!is_ppc64_elf (ibfd))
8640 toc = bfd_get_section_by_name (ibfd, ".toc");
8643 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8644 || discarded_section (toc))
8649 symtab_hdr = &elf_symtab_hdr (ibfd);
8651 /* Look at sections dropped from the final link. */
8654 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8656 if (sec->reloc_count == 0
8657 || !discarded_section (sec)
8658 || get_opd_info (sec)
8659 || (sec->flags & SEC_ALLOC) == 0
8660 || (sec->flags & SEC_DEBUGGING) != 0)
8663 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8664 if (relstart == NULL)
8667 /* Run through the relocs to see which toc entries might be
8669 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8671 enum elf_ppc64_reloc_type r_type;
8672 unsigned long r_symndx;
8674 struct elf_link_hash_entry *h;
8675 Elf_Internal_Sym *sym;
8678 r_type = ELF64_R_TYPE (rel->r_info);
8685 case R_PPC64_TOC16_LO:
8686 case R_PPC64_TOC16_HI:
8687 case R_PPC64_TOC16_HA:
8688 case R_PPC64_TOC16_DS:
8689 case R_PPC64_TOC16_LO_DS:
8693 r_symndx = ELF64_R_SYM (rel->r_info);
8694 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8702 val = h->root.u.def.value;
8704 val = sym->st_value;
8705 val += rel->r_addend;
8707 if (val >= toc->size)
8710 /* Anything in the toc ought to be aligned to 8 bytes.
8711 If not, don't mark as unused. */
8717 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8722 skip[val >> 3] = ref_from_discarded;
8725 if (elf_section_data (sec)->relocs != relstart)
8729 /* For largetoc loads of address constants, we can convert
8730 . addis rx,2,addr@got@ha
8731 . ld ry,addr@got@l(rx)
8733 . addis rx,2,addr@toc@ha
8734 . addi ry,rx,addr@toc@l
8735 when addr is within 2G of the toc pointer. This then means
8736 that the word storing "addr" in the toc is no longer needed. */
8738 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8739 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8740 && toc->reloc_count != 0)
8742 /* Read toc relocs. */
8743 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8745 if (toc_relocs == NULL)
8748 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8750 enum elf_ppc64_reloc_type r_type;
8751 unsigned long r_symndx;
8753 struct elf_link_hash_entry *h;
8754 Elf_Internal_Sym *sym;
8757 r_type = ELF64_R_TYPE (rel->r_info);
8758 if (r_type != R_PPC64_ADDR64)
8761 r_symndx = ELF64_R_SYM (rel->r_info);
8762 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8767 || discarded_section (sym_sec))
8770 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8775 if (h->type == STT_GNU_IFUNC)
8777 val = h->root.u.def.value;
8781 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8783 val = sym->st_value;
8785 val += rel->r_addend;
8786 val += sym_sec->output_section->vma + sym_sec->output_offset;
8788 /* We don't yet know the exact toc pointer value, but we
8789 know it will be somewhere in the toc section. Don't
8790 optimize if the difference from any possible toc
8791 pointer is outside [ff..f80008000, 7fff7fff]. */
8792 addr = toc->output_section->vma + TOC_BASE_OFF;
8793 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8796 addr = toc->output_section->vma + toc->output_section->rawsize;
8797 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8802 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8807 skip[rel->r_offset >> 3]
8808 |= can_optimize | ((rel - toc_relocs) << 2);
8815 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8819 if (local_syms != NULL
8820 && symtab_hdr->contents != (unsigned char *) local_syms)
8824 && elf_section_data (sec)->relocs != relstart)
8826 if (toc_relocs != NULL
8827 && elf_section_data (toc)->relocs != toc_relocs)
8834 /* Now check all kept sections that might reference the toc.
8835 Check the toc itself last. */
8836 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8839 sec = (sec == toc ? NULL
8840 : sec->next == NULL ? toc
8841 : sec->next == toc && toc->next ? toc->next
8846 if (sec->reloc_count == 0
8847 || discarded_section (sec)
8848 || get_opd_info (sec)
8849 || (sec->flags & SEC_ALLOC) == 0
8850 || (sec->flags & SEC_DEBUGGING) != 0)
8853 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8855 if (relstart == NULL)
8861 /* Mark toc entries referenced as used. */
8865 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8867 enum elf_ppc64_reloc_type r_type;
8868 unsigned long r_symndx;
8870 struct elf_link_hash_entry *h;
8871 Elf_Internal_Sym *sym;
8873 enum {no_check, check_lo, check_ha} insn_check;
8875 r_type = ELF64_R_TYPE (rel->r_info);
8879 insn_check = no_check;
8882 case R_PPC64_GOT_TLSLD16_HA:
8883 case R_PPC64_GOT_TLSGD16_HA:
8884 case R_PPC64_GOT_TPREL16_HA:
8885 case R_PPC64_GOT_DTPREL16_HA:
8886 case R_PPC64_GOT16_HA:
8887 case R_PPC64_TOC16_HA:
8888 insn_check = check_ha;
8891 case R_PPC64_GOT_TLSLD16_LO:
8892 case R_PPC64_GOT_TLSGD16_LO:
8893 case R_PPC64_GOT_TPREL16_LO_DS:
8894 case R_PPC64_GOT_DTPREL16_LO_DS:
8895 case R_PPC64_GOT16_LO:
8896 case R_PPC64_GOT16_LO_DS:
8897 case R_PPC64_TOC16_LO:
8898 case R_PPC64_TOC16_LO_DS:
8899 insn_check = check_lo;
8903 if (insn_check != no_check)
8905 bfd_vma off = rel->r_offset & ~3;
8906 unsigned char buf[4];
8909 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8914 insn = bfd_get_32 (ibfd, buf);
8915 if (insn_check == check_lo
8916 ? !ok_lo_toc_insn (insn)
8917 : ((insn & ((0x3f << 26) | 0x1f << 16))
8918 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8922 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8923 sprintf (str, "%#08x", insn);
8924 info->callbacks->einfo
8925 (_("%P: %H: toc optimization is not supported for"
8926 " %s instruction.\n"),
8927 ibfd, sec, rel->r_offset & ~3, str);
8934 case R_PPC64_TOC16_LO:
8935 case R_PPC64_TOC16_HI:
8936 case R_PPC64_TOC16_HA:
8937 case R_PPC64_TOC16_DS:
8938 case R_PPC64_TOC16_LO_DS:
8939 /* In case we're taking addresses of toc entries. */
8940 case R_PPC64_ADDR64:
8947 r_symndx = ELF64_R_SYM (rel->r_info);
8948 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8959 val = h->root.u.def.value;
8961 val = sym->st_value;
8962 val += rel->r_addend;
8964 if (val >= toc->size)
8967 if ((skip[val >> 3] & can_optimize) != 0)
8974 case R_PPC64_TOC16_HA:
8977 case R_PPC64_TOC16_LO_DS:
8978 off = rel->r_offset;
8979 off += (bfd_big_endian (ibfd) ? -2 : 3);
8980 if (!bfd_get_section_contents (ibfd, sec, &opc,
8986 if ((opc & (0x3f << 2)) == (58u << 2))
8991 /* Wrong sort of reloc, or not a ld. We may
8992 as well clear ref_from_discarded too. */
8999 /* For the toc section, we only mark as used if this
9000 entry itself isn't unused. */
9001 else if ((used[rel->r_offset >> 3]
9002 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9005 /* Do all the relocs again, to catch reference
9014 if (elf_section_data (sec)->relocs != relstart)
9018 /* Merge the used and skip arrays. Assume that TOC
9019 doublewords not appearing as either used or unused belong
9020 to to an entry more than one doubleword in size. */
9021 for (drop = skip, keep = used, last = 0, some_unused = 0;
9022 drop < skip + (toc->size + 7) / 8;
9027 *drop &= ~ref_from_discarded;
9028 if ((*drop & can_optimize) != 0)
9032 else if ((*drop & ref_from_discarded) != 0)
9035 last = ref_from_discarded;
9045 bfd_byte *contents, *src;
9047 Elf_Internal_Sym *sym;
9048 bfd_boolean local_toc_syms = FALSE;
9050 /* Shuffle the toc contents, and at the same time convert the
9051 skip array from booleans into offsets. */
9052 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9055 elf_section_data (toc)->this_hdr.contents = contents;
9057 for (src = contents, off = 0, drop = skip;
9058 src < contents + toc->size;
9061 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9066 memcpy (src - off, src, 8);
9070 toc->rawsize = toc->size;
9071 toc->size = src - contents - off;
9073 /* Adjust addends for relocs against the toc section sym,
9074 and optimize any accesses we can. */
9075 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9077 if (sec->reloc_count == 0
9078 || discarded_section (sec))
9081 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9083 if (relstart == NULL)
9086 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9088 enum elf_ppc64_reloc_type r_type;
9089 unsigned long r_symndx;
9091 struct elf_link_hash_entry *h;
9094 r_type = ELF64_R_TYPE (rel->r_info);
9101 case R_PPC64_TOC16_LO:
9102 case R_PPC64_TOC16_HI:
9103 case R_PPC64_TOC16_HA:
9104 case R_PPC64_TOC16_DS:
9105 case R_PPC64_TOC16_LO_DS:
9106 case R_PPC64_ADDR64:
9110 r_symndx = ELF64_R_SYM (rel->r_info);
9111 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9119 val = h->root.u.def.value;
9122 val = sym->st_value;
9124 local_toc_syms = TRUE;
9127 val += rel->r_addend;
9129 if (val > toc->rawsize)
9131 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9133 else if ((skip[val >> 3] & can_optimize) != 0)
9135 Elf_Internal_Rela *tocrel
9136 = toc_relocs + (skip[val >> 3] >> 2);
9137 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9141 case R_PPC64_TOC16_HA:
9142 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9145 case R_PPC64_TOC16_LO_DS:
9146 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9150 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9152 info->callbacks->einfo
9153 (_("%P: %H: %s references "
9154 "optimized away TOC entry\n"),
9155 ibfd, sec, rel->r_offset,
9156 ppc64_elf_howto_table[r_type]->name);
9157 bfd_set_error (bfd_error_bad_value);
9160 rel->r_addend = tocrel->r_addend;
9161 elf_section_data (sec)->relocs = relstart;
9165 if (h != NULL || sym->st_value != 0)
9168 rel->r_addend -= skip[val >> 3];
9169 elf_section_data (sec)->relocs = relstart;
9172 if (elf_section_data (sec)->relocs != relstart)
9176 /* We shouldn't have local or global symbols defined in the TOC,
9177 but handle them anyway. */
9178 if (local_syms != NULL)
9179 for (sym = local_syms;
9180 sym < local_syms + symtab_hdr->sh_info;
9182 if (sym->st_value != 0
9183 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9187 if (sym->st_value > toc->rawsize)
9188 i = toc->rawsize >> 3;
9190 i = sym->st_value >> 3;
9192 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9195 (*_bfd_error_handler)
9196 (_("%s defined on removed toc entry"),
9197 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9200 while ((skip[i] & (ref_from_discarded | can_optimize)));
9201 sym->st_value = (bfd_vma) i << 3;
9204 sym->st_value -= skip[i];
9205 symtab_hdr->contents = (unsigned char *) local_syms;
9208 /* Adjust any global syms defined in this toc input section. */
9209 if (toc_inf.global_toc_syms)
9212 toc_inf.skip = skip;
9213 toc_inf.global_toc_syms = FALSE;
9214 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9218 if (toc->reloc_count != 0)
9220 Elf_Internal_Shdr *rel_hdr;
9221 Elf_Internal_Rela *wrel;
9224 /* Remove unused toc relocs, and adjust those we keep. */
9225 if (toc_relocs == NULL)
9226 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9228 if (toc_relocs == NULL)
9232 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9233 if ((skip[rel->r_offset >> 3]
9234 & (ref_from_discarded | can_optimize)) == 0)
9236 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9237 wrel->r_info = rel->r_info;
9238 wrel->r_addend = rel->r_addend;
9241 else if (!dec_dynrel_count (rel->r_info, toc, info,
9242 &local_syms, NULL, NULL))
9245 elf_section_data (toc)->relocs = toc_relocs;
9246 toc->reloc_count = wrel - toc_relocs;
9247 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9248 sz = rel_hdr->sh_entsize;
9249 rel_hdr->sh_size = toc->reloc_count * sz;
9252 else if (toc_relocs != NULL
9253 && elf_section_data (toc)->relocs != toc_relocs)
9256 if (local_syms != NULL
9257 && symtab_hdr->contents != (unsigned char *) local_syms)
9259 if (!info->keep_memory)
9262 symtab_hdr->contents = (unsigned char *) local_syms;
9270 /* Return true iff input section I references the TOC using
9271 instructions limited to +/-32k offsets. */
9274 ppc64_elf_has_small_toc_reloc (asection *i)
9276 return (is_ppc64_elf (i->owner)
9277 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9280 /* Allocate space for one GOT entry. */
9283 allocate_got (struct elf_link_hash_entry *h,
9284 struct bfd_link_info *info,
9285 struct got_entry *gent)
9287 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9289 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9290 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9292 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9293 ? 2 : 1) * sizeof (Elf64_External_Rela);
9294 asection *got = ppc64_elf_tdata (gent->owner)->got;
9296 gent->got.offset = got->size;
9297 got->size += entsize;
9299 dyn = htab->elf.dynamic_sections_created;
9300 if (h->type == STT_GNU_IFUNC)
9302 htab->elf.irelplt->size += rentsize;
9303 htab->got_reli_size += rentsize;
9305 else if ((info->shared
9306 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9307 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9308 || h->root.type != bfd_link_hash_undefweak))
9310 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9311 relgot->size += rentsize;
9315 /* This function merges got entries in the same toc group. */
9318 merge_got_entries (struct got_entry **pent)
9320 struct got_entry *ent, *ent2;
9322 for (ent = *pent; ent != NULL; ent = ent->next)
9323 if (!ent->is_indirect)
9324 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9325 if (!ent2->is_indirect
9326 && ent2->addend == ent->addend
9327 && ent2->tls_type == ent->tls_type
9328 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9330 ent2->is_indirect = TRUE;
9331 ent2->got.ent = ent;
9335 /* Allocate space in .plt, .got and associated reloc sections for
9339 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9341 struct bfd_link_info *info;
9342 struct ppc_link_hash_table *htab;
9344 struct ppc_link_hash_entry *eh;
9345 struct elf_dyn_relocs *p;
9346 struct got_entry **pgent, *gent;
9348 if (h->root.type == bfd_link_hash_indirect)
9351 info = (struct bfd_link_info *) inf;
9352 htab = ppc_hash_table (info);
9356 if ((htab->elf.dynamic_sections_created
9358 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9359 || h->type == STT_GNU_IFUNC)
9361 struct plt_entry *pent;
9362 bfd_boolean doneone = FALSE;
9363 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9364 if (pent->plt.refcount > 0)
9366 if (!htab->elf.dynamic_sections_created
9367 || h->dynindx == -1)
9370 pent->plt.offset = s->size;
9371 s->size += PLT_ENTRY_SIZE (htab);
9372 s = htab->elf.irelplt;
9376 /* If this is the first .plt entry, make room for the special
9380 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9382 pent->plt.offset = s->size;
9384 /* Make room for this entry. */
9385 s->size += PLT_ENTRY_SIZE (htab);
9387 /* Make room for the .glink code. */
9390 s->size += GLINK_CALL_STUB_SIZE;
9393 /* We need bigger stubs past index 32767. */
9394 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9401 /* We also need to make an entry in the .rela.plt section. */
9402 s = htab->elf.srelplt;
9404 s->size += sizeof (Elf64_External_Rela);
9408 pent->plt.offset = (bfd_vma) -1;
9411 h->plt.plist = NULL;
9417 h->plt.plist = NULL;
9421 eh = (struct ppc_link_hash_entry *) h;
9422 /* Run through the TLS GD got entries first if we're changing them
9424 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9425 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9426 if (gent->got.refcount > 0
9427 && (gent->tls_type & TLS_GD) != 0)
9429 /* This was a GD entry that has been converted to TPREL. If
9430 there happens to be a TPREL entry we can use that one. */
9431 struct got_entry *ent;
9432 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9433 if (ent->got.refcount > 0
9434 && (ent->tls_type & TLS_TPREL) != 0
9435 && ent->addend == gent->addend
9436 && ent->owner == gent->owner)
9438 gent->got.refcount = 0;
9442 /* If not, then we'll be using our own TPREL entry. */
9443 if (gent->got.refcount != 0)
9444 gent->tls_type = TLS_TLS | TLS_TPREL;
9447 /* Remove any list entry that won't generate a word in the GOT before
9448 we call merge_got_entries. Otherwise we risk merging to empty
9450 pgent = &h->got.glist;
9451 while ((gent = *pgent) != NULL)
9452 if (gent->got.refcount > 0)
9454 if ((gent->tls_type & TLS_LD) != 0
9457 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9458 *pgent = gent->next;
9461 pgent = &gent->next;
9464 *pgent = gent->next;
9466 if (!htab->do_multi_toc)
9467 merge_got_entries (&h->got.glist);
9469 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9470 if (!gent->is_indirect)
9472 /* Make sure this symbol is output as a dynamic symbol.
9473 Undefined weak syms won't yet be marked as dynamic,
9474 nor will all TLS symbols. */
9475 if (h->dynindx == -1
9477 && h->type != STT_GNU_IFUNC
9478 && htab->elf.dynamic_sections_created)
9480 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9484 if (!is_ppc64_elf (gent->owner))
9487 allocate_got (h, info, gent);
9490 if (eh->dyn_relocs == NULL
9491 || (!htab->elf.dynamic_sections_created
9492 && h->type != STT_GNU_IFUNC))
9495 /* In the shared -Bsymbolic case, discard space allocated for
9496 dynamic pc-relative relocs against symbols which turn out to be
9497 defined in regular objects. For the normal shared case, discard
9498 space for relocs that have become local due to symbol visibility
9503 /* Relocs that use pc_count are those that appear on a call insn,
9504 or certain REL relocs (see must_be_dyn_reloc) that can be
9505 generated via assembly. We want calls to protected symbols to
9506 resolve directly to the function rather than going via the plt.
9507 If people want function pointer comparisons to work as expected
9508 then they should avoid writing weird assembly. */
9509 if (SYMBOL_CALLS_LOCAL (info, h))
9511 struct elf_dyn_relocs **pp;
9513 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9515 p->count -= p->pc_count;
9524 /* Also discard relocs on undefined weak syms with non-default
9526 if (eh->dyn_relocs != NULL
9527 && h->root.type == bfd_link_hash_undefweak)
9529 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9530 eh->dyn_relocs = NULL;
9532 /* Make sure this symbol is output as a dynamic symbol.
9533 Undefined weak syms won't yet be marked as dynamic. */
9534 else if (h->dynindx == -1
9535 && !h->forced_local)
9537 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9542 else if (h->type == STT_GNU_IFUNC)
9544 if (!h->non_got_ref)
9545 eh->dyn_relocs = NULL;
9547 else if (ELIMINATE_COPY_RELOCS)
9549 /* For the non-shared case, discard space for relocs against
9550 symbols which turn out to need copy relocs or are not
9556 /* Make sure this symbol is output as a dynamic symbol.
9557 Undefined weak syms won't yet be marked as dynamic. */
9558 if (h->dynindx == -1
9559 && !h->forced_local)
9561 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9565 /* If that succeeded, we know we'll be keeping all the
9567 if (h->dynindx != -1)
9571 eh->dyn_relocs = NULL;
9576 /* Finally, allocate space. */
9577 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9579 asection *sreloc = elf_section_data (p->sec)->sreloc;
9580 if (eh->elf.type == STT_GNU_IFUNC)
9581 sreloc = htab->elf.irelplt;
9582 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9588 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9589 to set up space for global entry stubs. These are put in glink,
9590 after the branch table. */
9593 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9595 struct bfd_link_info *info;
9596 struct ppc_link_hash_table *htab;
9597 struct plt_entry *pent;
9600 if (h->root.type == bfd_link_hash_indirect)
9603 if (!h->pointer_equality_needed)
9610 htab = ppc_hash_table (info);
9615 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9616 if (pent->plt.offset != (bfd_vma) -1
9617 && pent->addend == 0)
9619 /* For ELFv2, if this symbol is not defined in a regular file
9620 and we are not generating a shared library or pie, then we
9621 need to define the symbol in the executable on a call stub.
9622 This is to avoid text relocations. */
9623 s->size = (s->size + 15) & -16;
9624 h->root.u.def.section = s;
9625 h->root.u.def.value = s->size;
9632 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9633 read-only sections. */
9636 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9638 if (h->root.type == bfd_link_hash_indirect)
9641 if (readonly_dynrelocs (h))
9643 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9645 /* Not an error, just cut short the traversal. */
9651 /* Set the sizes of the dynamic sections. */
9654 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9655 struct bfd_link_info *info)
9657 struct ppc_link_hash_table *htab;
9662 struct got_entry *first_tlsld;
9664 htab = ppc_hash_table (info);
9668 dynobj = htab->elf.dynobj;
9672 if (htab->elf.dynamic_sections_created)
9674 /* Set the contents of the .interp section to the interpreter. */
9675 if (info->executable)
9677 s = bfd_get_linker_section (dynobj, ".interp");
9680 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9681 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9685 /* Set up .got offsets for local syms, and space for local dynamic
9687 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9689 struct got_entry **lgot_ents;
9690 struct got_entry **end_lgot_ents;
9691 struct plt_entry **local_plt;
9692 struct plt_entry **end_local_plt;
9693 unsigned char *lgot_masks;
9694 bfd_size_type locsymcount;
9695 Elf_Internal_Shdr *symtab_hdr;
9697 if (!is_ppc64_elf (ibfd))
9700 for (s = ibfd->sections; s != NULL; s = s->next)
9702 struct ppc_dyn_relocs *p;
9704 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9706 if (!bfd_is_abs_section (p->sec)
9707 && bfd_is_abs_section (p->sec->output_section))
9709 /* Input section has been discarded, either because
9710 it is a copy of a linkonce section or due to
9711 linker script /DISCARD/, so we'll be discarding
9714 else if (p->count != 0)
9716 asection *srel = elf_section_data (p->sec)->sreloc;
9718 srel = htab->elf.irelplt;
9719 srel->size += p->count * sizeof (Elf64_External_Rela);
9720 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9721 info->flags |= DF_TEXTREL;
9726 lgot_ents = elf_local_got_ents (ibfd);
9730 symtab_hdr = &elf_symtab_hdr (ibfd);
9731 locsymcount = symtab_hdr->sh_info;
9732 end_lgot_ents = lgot_ents + locsymcount;
9733 local_plt = (struct plt_entry **) end_lgot_ents;
9734 end_local_plt = local_plt + locsymcount;
9735 lgot_masks = (unsigned char *) end_local_plt;
9736 s = ppc64_elf_tdata (ibfd)->got;
9737 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9739 struct got_entry **pent, *ent;
9742 while ((ent = *pent) != NULL)
9743 if (ent->got.refcount > 0)
9745 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9747 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9752 unsigned int ent_size = 8;
9753 unsigned int rel_size = sizeof (Elf64_External_Rela);
9755 ent->got.offset = s->size;
9756 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9761 s->size += ent_size;
9762 if ((*lgot_masks & PLT_IFUNC) != 0)
9764 htab->elf.irelplt->size += rel_size;
9765 htab->got_reli_size += rel_size;
9767 else if (info->shared)
9769 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9770 srel->size += rel_size;
9779 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9780 for (; local_plt < end_local_plt; ++local_plt)
9782 struct plt_entry *ent;
9784 for (ent = *local_plt; ent != NULL; ent = ent->next)
9785 if (ent->plt.refcount > 0)
9788 ent->plt.offset = s->size;
9789 s->size += PLT_ENTRY_SIZE (htab);
9791 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9794 ent->plt.offset = (bfd_vma) -1;
9798 /* Allocate global sym .plt and .got entries, and space for global
9799 sym dynamic relocs. */
9800 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9801 /* Stash the end of glink branch table. */
9802 if (htab->glink != NULL)
9803 htab->glink->rawsize = htab->glink->size;
9805 if (!htab->opd_abi && !info->shared)
9806 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9809 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9811 struct got_entry *ent;
9813 if (!is_ppc64_elf (ibfd))
9816 ent = ppc64_tlsld_got (ibfd);
9817 if (ent->got.refcount > 0)
9819 if (!htab->do_multi_toc && first_tlsld != NULL)
9821 ent->is_indirect = TRUE;
9822 ent->got.ent = first_tlsld;
9826 if (first_tlsld == NULL)
9828 s = ppc64_elf_tdata (ibfd)->got;
9829 ent->got.offset = s->size;
9834 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9835 srel->size += sizeof (Elf64_External_Rela);
9840 ent->got.offset = (bfd_vma) -1;
9843 /* We now have determined the sizes of the various dynamic sections.
9844 Allocate memory for them. */
9846 for (s = dynobj->sections; s != NULL; s = s->next)
9848 if ((s->flags & SEC_LINKER_CREATED) == 0)
9851 if (s == htab->brlt || s == htab->relbrlt)
9852 /* These haven't been allocated yet; don't strip. */
9854 else if (s == htab->elf.sgot
9855 || s == htab->elf.splt
9856 || s == htab->elf.iplt
9858 || s == htab->dynbss)
9860 /* Strip this section if we don't need it; see the
9863 else if (s == htab->glink_eh_frame)
9865 if (!bfd_is_abs_section (s->output_section))
9866 /* Not sized yet. */
9869 else if (CONST_STRNEQ (s->name, ".rela"))
9873 if (s != htab->elf.srelplt)
9876 /* We use the reloc_count field as a counter if we need
9877 to copy relocs into the output file. */
9883 /* It's not one of our sections, so don't allocate space. */
9889 /* If we don't need this section, strip it from the
9890 output file. This is mostly to handle .rela.bss and
9891 .rela.plt. We must create both sections in
9892 create_dynamic_sections, because they must be created
9893 before the linker maps input sections to output
9894 sections. The linker does that before
9895 adjust_dynamic_symbol is called, and it is that
9896 function which decides whether anything needs to go
9897 into these sections. */
9898 s->flags |= SEC_EXCLUDE;
9902 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9905 /* Allocate memory for the section contents. We use bfd_zalloc
9906 here in case unused entries are not reclaimed before the
9907 section's contents are written out. This should not happen,
9908 but this way if it does we get a R_PPC64_NONE reloc in .rela
9909 sections instead of garbage.
9910 We also rely on the section contents being zero when writing
9912 s->contents = bfd_zalloc (dynobj, s->size);
9913 if (s->contents == NULL)
9917 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9919 if (!is_ppc64_elf (ibfd))
9922 s = ppc64_elf_tdata (ibfd)->got;
9923 if (s != NULL && s != htab->elf.sgot)
9926 s->flags |= SEC_EXCLUDE;
9929 s->contents = bfd_zalloc (ibfd, s->size);
9930 if (s->contents == NULL)
9934 s = ppc64_elf_tdata (ibfd)->relgot;
9938 s->flags |= SEC_EXCLUDE;
9941 s->contents = bfd_zalloc (ibfd, s->size);
9942 if (s->contents == NULL)
9950 if (htab->elf.dynamic_sections_created)
9952 bfd_boolean tls_opt;
9954 /* Add some entries to the .dynamic section. We fill in the
9955 values later, in ppc64_elf_finish_dynamic_sections, but we
9956 must add the entries now so that we get the correct size for
9957 the .dynamic section. The DT_DEBUG entry is filled in by the
9958 dynamic linker and used by the debugger. */
9959 #define add_dynamic_entry(TAG, VAL) \
9960 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9962 if (info->executable)
9964 if (!add_dynamic_entry (DT_DEBUG, 0))
9968 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9970 if (!add_dynamic_entry (DT_PLTGOT, 0)
9971 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9972 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9973 || !add_dynamic_entry (DT_JMPREL, 0)
9974 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9978 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9980 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9981 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9985 tls_opt = (!htab->params->no_tls_get_addr_opt
9986 && htab->tls_get_addr_fd != NULL
9987 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9988 if (tls_opt || !htab->opd_abi)
9990 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9996 if (!add_dynamic_entry (DT_RELA, 0)
9997 || !add_dynamic_entry (DT_RELASZ, 0)
9998 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10001 /* If any dynamic relocs apply to a read-only section,
10002 then we need a DT_TEXTREL entry. */
10003 if ((info->flags & DF_TEXTREL) == 0)
10004 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10006 if ((info->flags & DF_TEXTREL) != 0)
10008 if (!add_dynamic_entry (DT_TEXTREL, 0))
10013 #undef add_dynamic_entry
10018 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10021 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10023 if (h->plt.plist != NULL
10025 && !h->pointer_equality_needed)
10028 return _bfd_elf_hash_symbol (h);
10031 /* Determine the type of stub needed, if any, for a call. */
10033 static inline enum ppc_stub_type
10034 ppc_type_of_stub (asection *input_sec,
10035 const Elf_Internal_Rela *rel,
10036 struct ppc_link_hash_entry **hash,
10037 struct plt_entry **plt_ent,
10038 bfd_vma destination,
10039 unsigned long local_off)
10041 struct ppc_link_hash_entry *h = *hash;
10043 bfd_vma branch_offset;
10044 bfd_vma max_branch_offset;
10045 enum elf_ppc64_reloc_type r_type;
10049 struct plt_entry *ent;
10050 struct ppc_link_hash_entry *fdh = h;
10052 && h->oh->is_func_descriptor)
10054 fdh = ppc_follow_link (h->oh);
10058 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10059 if (ent->addend == rel->r_addend
10060 && ent->plt.offset != (bfd_vma) -1)
10063 return ppc_stub_plt_call;
10066 /* Here, we know we don't have a plt entry. If we don't have a
10067 either a defined function descriptor or a defined entry symbol
10068 in a regular object file, then it is pointless trying to make
10069 any other type of stub. */
10070 if (!is_static_defined (&fdh->elf)
10071 && !is_static_defined (&h->elf))
10072 return ppc_stub_none;
10074 else if (elf_local_got_ents (input_sec->owner) != NULL)
10076 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10077 struct plt_entry **local_plt = (struct plt_entry **)
10078 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10079 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10081 if (local_plt[r_symndx] != NULL)
10083 struct plt_entry *ent;
10085 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10086 if (ent->addend == rel->r_addend
10087 && ent->plt.offset != (bfd_vma) -1)
10090 return ppc_stub_plt_call;
10095 /* Determine where the call point is. */
10096 location = (input_sec->output_offset
10097 + input_sec->output_section->vma
10100 branch_offset = destination - location;
10101 r_type = ELF64_R_TYPE (rel->r_info);
10103 /* Determine if a long branch stub is needed. */
10104 max_branch_offset = 1 << 25;
10105 if (r_type != R_PPC64_REL24)
10106 max_branch_offset = 1 << 15;
10108 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10109 /* We need a stub. Figure out whether a long_branch or plt_branch
10110 is needed later. */
10111 return ppc_stub_long_branch;
10113 return ppc_stub_none;
10116 /* With power7 weakly ordered memory model, it is possible for ld.so
10117 to update a plt entry in one thread and have another thread see a
10118 stale zero toc entry. To avoid this we need some sort of acquire
10119 barrier in the call stub. One solution is to make the load of the
10120 toc word seem to appear to depend on the load of the function entry
10121 word. Another solution is to test for r2 being zero, and branch to
10122 the appropriate glink entry if so.
10124 . fake dep barrier compare
10125 . ld 12,xxx(2) ld 12,xxx(2)
10126 . mtctr 12 mtctr 12
10127 . xor 11,12,12 ld 2,xxx+8(2)
10128 . add 2,2,11 cmpldi 2,0
10129 . ld 2,xxx+8(2) bnectr+
10130 . bctr b <glink_entry>
10132 The solution involving the compare turns out to be faster, so
10133 that's what we use unless the branch won't reach. */
10135 #define ALWAYS_USE_FAKE_DEP 0
10136 #define ALWAYS_EMIT_R2SAVE 0
10138 #define PPC_LO(v) ((v) & 0xffff)
10139 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10140 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10142 static inline unsigned int
10143 plt_stub_size (struct ppc_link_hash_table *htab,
10144 struct ppc_stub_hash_entry *stub_entry,
10147 unsigned size = 12;
10149 if (ALWAYS_EMIT_R2SAVE
10150 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10152 if (PPC_HA (off) != 0)
10157 if (htab->params->plt_static_chain)
10159 if (htab->params->plt_thread_safe)
10161 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10164 if (stub_entry->h != NULL
10165 && (stub_entry->h == htab->tls_get_addr_fd
10166 || stub_entry->h == htab->tls_get_addr)
10167 && !htab->params->no_tls_get_addr_opt)
10172 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10173 then return the padding needed to do so. */
10174 static inline unsigned int
10175 plt_stub_pad (struct ppc_link_hash_table *htab,
10176 struct ppc_stub_hash_entry *stub_entry,
10179 int stub_align = 1 << htab->params->plt_stub_align;
10180 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10181 bfd_vma stub_off = stub_entry->stub_sec->size;
10183 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10184 > (stub_size & -stub_align))
10185 return stub_align - (stub_off & (stub_align - 1));
10189 /* Build a .plt call stub. */
10191 static inline bfd_byte *
10192 build_plt_stub (struct ppc_link_hash_table *htab,
10193 struct ppc_stub_hash_entry *stub_entry,
10194 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10196 bfd *obfd = htab->params->stub_bfd;
10197 bfd_boolean plt_load_toc = htab->opd_abi;
10198 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10199 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10200 bfd_boolean use_fake_dep = plt_thread_safe;
10201 bfd_vma cmp_branch_off = 0;
10203 if (!ALWAYS_USE_FAKE_DEP
10206 && !(stub_entry->h != NULL
10207 && (stub_entry->h == htab->tls_get_addr_fd
10208 || stub_entry->h == htab->tls_get_addr)
10209 && !htab->params->no_tls_get_addr_opt))
10211 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10212 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10213 / PLT_ENTRY_SIZE (htab));
10214 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10217 if (pltindex > 32768)
10218 glinkoff += (pltindex - 32768) * 4;
10220 + htab->glink->output_offset
10221 + htab->glink->output_section->vma);
10222 from = (p - stub_entry->stub_sec->contents
10223 + 4 * (ALWAYS_EMIT_R2SAVE
10224 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10225 + 4 * (PPC_HA (offset) != 0)
10226 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10227 != PPC_HA (offset))
10228 + 4 * (plt_static_chain != 0)
10230 + stub_entry->stub_sec->output_offset
10231 + stub_entry->stub_sec->output_section->vma);
10232 cmp_branch_off = to - from;
10233 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10236 if (PPC_HA (offset) != 0)
10240 if (ALWAYS_EMIT_R2SAVE
10241 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10242 r[0].r_offset += 4;
10243 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10244 r[1].r_offset = r[0].r_offset + 4;
10245 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10246 r[1].r_addend = r[0].r_addend;
10249 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10251 r[2].r_offset = r[1].r_offset + 4;
10252 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10253 r[2].r_addend = r[0].r_addend;
10257 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10258 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10259 r[2].r_addend = r[0].r_addend + 8;
10260 if (plt_static_chain)
10262 r[3].r_offset = r[2].r_offset + 4;
10263 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10264 r[3].r_addend = r[0].r_addend + 16;
10269 if (ALWAYS_EMIT_R2SAVE
10270 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10271 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10274 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10275 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10279 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10280 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10283 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10285 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10288 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10293 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10294 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10296 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10297 if (plt_static_chain)
10298 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10305 if (ALWAYS_EMIT_R2SAVE
10306 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10307 r[0].r_offset += 4;
10308 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10311 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10313 r[1].r_offset = r[0].r_offset + 4;
10314 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10315 r[1].r_addend = r[0].r_addend;
10319 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10320 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10321 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10322 if (plt_static_chain)
10324 r[2].r_offset = r[1].r_offset + 4;
10325 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10326 r[2].r_addend = r[0].r_addend + 8;
10331 if (ALWAYS_EMIT_R2SAVE
10332 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10333 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10334 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10336 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10338 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10341 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10346 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10347 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10349 if (plt_static_chain)
10350 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10351 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10354 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10356 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10357 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10358 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10361 bfd_put_32 (obfd, BCTR, p), p += 4;
10365 /* Build a special .plt call stub for __tls_get_addr. */
10367 #define LD_R11_0R3 0xe9630000
10368 #define LD_R12_0R3 0xe9830000
10369 #define MR_R0_R3 0x7c601b78
10370 #define CMPDI_R11_0 0x2c2b0000
10371 #define ADD_R3_R12_R13 0x7c6c6a14
10372 #define BEQLR 0x4d820020
10373 #define MR_R3_R0 0x7c030378
10374 #define STD_R11_0R1 0xf9610000
10375 #define BCTRL 0x4e800421
10376 #define LD_R11_0R1 0xe9610000
10377 #define MTLR_R11 0x7d6803a6
10379 static inline bfd_byte *
10380 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10381 struct ppc_stub_hash_entry *stub_entry,
10382 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10384 bfd *obfd = htab->params->stub_bfd;
10386 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10387 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10388 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10389 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10390 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10391 bfd_put_32 (obfd, BEQLR, p), p += 4;
10392 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10393 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10394 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10397 r[0].r_offset += 9 * 4;
10398 p = build_plt_stub (htab, stub_entry, p, offset, r);
10399 bfd_put_32 (obfd, BCTRL, p - 4);
10401 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10402 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10403 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10404 bfd_put_32 (obfd, BLR, p), p += 4;
10409 static Elf_Internal_Rela *
10410 get_relocs (asection *sec, int count)
10412 Elf_Internal_Rela *relocs;
10413 struct bfd_elf_section_data *elfsec_data;
10415 elfsec_data = elf_section_data (sec);
10416 relocs = elfsec_data->relocs;
10417 if (relocs == NULL)
10419 bfd_size_type relsize;
10420 relsize = sec->reloc_count * sizeof (*relocs);
10421 relocs = bfd_alloc (sec->owner, relsize);
10422 if (relocs == NULL)
10424 elfsec_data->relocs = relocs;
10425 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10426 sizeof (Elf_Internal_Shdr));
10427 if (elfsec_data->rela.hdr == NULL)
10429 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10430 * sizeof (Elf64_External_Rela));
10431 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10432 sec->reloc_count = 0;
10434 relocs += sec->reloc_count;
10435 sec->reloc_count += count;
10440 get_r2off (struct bfd_link_info *info,
10441 struct ppc_stub_hash_entry *stub_entry)
10443 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10444 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10448 /* Support linking -R objects. Get the toc pointer from the
10451 if (!htab->opd_abi)
10453 asection *opd = stub_entry->h->elf.root.u.def.section;
10454 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10456 if (strcmp (opd->name, ".opd") != 0
10457 || opd->reloc_count != 0)
10459 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10460 stub_entry->h->elf.root.root.string);
10461 bfd_set_error (bfd_error_bad_value);
10464 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10466 r2off = bfd_get_64 (opd->owner, buf);
10467 r2off -= elf_gp (info->output_bfd);
10469 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10474 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10476 struct ppc_stub_hash_entry *stub_entry;
10477 struct ppc_branch_hash_entry *br_entry;
10478 struct bfd_link_info *info;
10479 struct ppc_link_hash_table *htab;
10484 Elf_Internal_Rela *r;
10487 /* Massage our args to the form they really have. */
10488 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10491 htab = ppc_hash_table (info);
10495 /* Make a note of the offset within the stubs for this entry. */
10496 stub_entry->stub_offset = stub_entry->stub_sec->size;
10497 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10499 htab->stub_count[stub_entry->stub_type - 1] += 1;
10500 switch (stub_entry->stub_type)
10502 case ppc_stub_long_branch:
10503 case ppc_stub_long_branch_r2off:
10504 /* Branches are relative. This is where we are going to. */
10505 dest = (stub_entry->target_value
10506 + stub_entry->target_section->output_offset
10507 + stub_entry->target_section->output_section->vma);
10508 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10511 /* And this is where we are coming from. */
10512 off -= (stub_entry->stub_offset
10513 + stub_entry->stub_sec->output_offset
10514 + stub_entry->stub_sec->output_section->vma);
10517 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10519 bfd_vma r2off = get_r2off (info, stub_entry);
10523 htab->stub_error = TRUE;
10526 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10529 if (PPC_HA (r2off) != 0)
10532 bfd_put_32 (htab->params->stub_bfd,
10533 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10536 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10540 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10542 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10544 info->callbacks->einfo
10545 (_("%P: long branch stub `%s' offset overflow\n"),
10546 stub_entry->root.string);
10547 htab->stub_error = TRUE;
10551 if (info->emitrelocations)
10553 r = get_relocs (stub_entry->stub_sec, 1);
10556 r->r_offset = loc - stub_entry->stub_sec->contents;
10557 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10558 r->r_addend = dest;
10559 if (stub_entry->h != NULL)
10561 struct elf_link_hash_entry **hashes;
10562 unsigned long symndx;
10563 struct ppc_link_hash_entry *h;
10565 hashes = elf_sym_hashes (htab->params->stub_bfd);
10566 if (hashes == NULL)
10568 bfd_size_type hsize;
10570 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10571 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10572 if (hashes == NULL)
10574 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10575 htab->stub_globals = 1;
10577 symndx = htab->stub_globals++;
10579 hashes[symndx] = &h->elf;
10580 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10581 if (h->oh != NULL && h->oh->is_func)
10582 h = ppc_follow_link (h->oh);
10583 if (h->elf.root.u.def.section != stub_entry->target_section)
10584 /* H is an opd symbol. The addend must be zero. */
10588 off = (h->elf.root.u.def.value
10589 + h->elf.root.u.def.section->output_offset
10590 + h->elf.root.u.def.section->output_section->vma);
10591 r->r_addend -= off;
10597 case ppc_stub_plt_branch:
10598 case ppc_stub_plt_branch_r2off:
10599 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10600 stub_entry->root.string + 9,
10602 if (br_entry == NULL)
10604 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10605 stub_entry->root.string);
10606 htab->stub_error = TRUE;
10610 dest = (stub_entry->target_value
10611 + stub_entry->target_section->output_offset
10612 + stub_entry->target_section->output_section->vma);
10613 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10614 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10616 bfd_put_64 (htab->brlt->owner, dest,
10617 htab->brlt->contents + br_entry->offset);
10619 if (br_entry->iter == htab->stub_iteration)
10621 br_entry->iter = 0;
10623 if (htab->relbrlt != NULL)
10625 /* Create a reloc for the branch lookup table entry. */
10626 Elf_Internal_Rela rela;
10629 rela.r_offset = (br_entry->offset
10630 + htab->brlt->output_offset
10631 + htab->brlt->output_section->vma);
10632 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10633 rela.r_addend = dest;
10635 rl = htab->relbrlt->contents;
10636 rl += (htab->relbrlt->reloc_count++
10637 * sizeof (Elf64_External_Rela));
10638 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10640 else if (info->emitrelocations)
10642 r = get_relocs (htab->brlt, 1);
10645 /* brlt, being SEC_LINKER_CREATED does not go through the
10646 normal reloc processing. Symbols and offsets are not
10647 translated from input file to output file form, so
10648 set up the offset per the output file. */
10649 r->r_offset = (br_entry->offset
10650 + htab->brlt->output_offset
10651 + htab->brlt->output_section->vma);
10652 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10653 r->r_addend = dest;
10657 dest = (br_entry->offset
10658 + htab->brlt->output_offset
10659 + htab->brlt->output_section->vma);
10662 - elf_gp (htab->brlt->output_section->owner)
10663 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10665 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10667 info->callbacks->einfo
10668 (_("%P: linkage table error against `%T'\n"),
10669 stub_entry->root.string);
10670 bfd_set_error (bfd_error_bad_value);
10671 htab->stub_error = TRUE;
10675 if (info->emitrelocations)
10677 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10680 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10681 if (bfd_big_endian (info->output_bfd))
10682 r[0].r_offset += 2;
10683 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10684 r[0].r_offset += 4;
10685 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10686 r[0].r_addend = dest;
10687 if (PPC_HA (off) != 0)
10689 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10690 r[1].r_offset = r[0].r_offset + 4;
10691 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10692 r[1].r_addend = r[0].r_addend;
10696 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10698 if (PPC_HA (off) != 0)
10701 bfd_put_32 (htab->params->stub_bfd,
10702 ADDIS_R12_R2 | PPC_HA (off), loc);
10704 bfd_put_32 (htab->params->stub_bfd,
10705 LD_R12_0R12 | PPC_LO (off), loc);
10710 bfd_put_32 (htab->params->stub_bfd,
10711 LD_R12_0R2 | PPC_LO (off), loc);
10716 bfd_vma r2off = get_r2off (info, stub_entry);
10718 if (r2off == 0 && htab->opd_abi)
10720 htab->stub_error = TRUE;
10724 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10727 if (PPC_HA (off) != 0)
10730 bfd_put_32 (htab->params->stub_bfd,
10731 ADDIS_R12_R2 | PPC_HA (off), loc);
10733 bfd_put_32 (htab->params->stub_bfd,
10734 LD_R12_0R12 | PPC_LO (off), loc);
10737 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10739 if (PPC_HA (r2off) != 0)
10743 bfd_put_32 (htab->params->stub_bfd,
10744 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10746 if (PPC_LO (r2off) != 0)
10750 bfd_put_32 (htab->params->stub_bfd,
10751 ADDI_R2_R2 | PPC_LO (r2off), loc);
10755 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10757 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10760 case ppc_stub_plt_call:
10761 case ppc_stub_plt_call_r2save:
10762 if (stub_entry->h != NULL
10763 && stub_entry->h->is_func_descriptor
10764 && stub_entry->h->oh != NULL)
10766 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10768 /* If the old-ABI "dot-symbol" is undefined make it weak so
10769 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10770 FIXME: We used to define the symbol on one of the call
10771 stubs instead, which is why we test symbol section id
10772 against htab->top_id in various places. Likely all
10773 these checks could now disappear. */
10774 if (fh->elf.root.type == bfd_link_hash_undefined)
10775 fh->elf.root.type = bfd_link_hash_undefweak;
10776 /* Stop undo_symbol_twiddle changing it back to undefined. */
10777 fh->was_undefined = 0;
10780 /* Now build the stub. */
10781 dest = stub_entry->plt_ent->plt.offset & ~1;
10782 if (dest >= (bfd_vma) -2)
10785 plt = htab->elf.splt;
10786 if (!htab->elf.dynamic_sections_created
10787 || stub_entry->h == NULL
10788 || stub_entry->h->elf.dynindx == -1)
10789 plt = htab->elf.iplt;
10791 dest += plt->output_offset + plt->output_section->vma;
10793 if (stub_entry->h == NULL
10794 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10796 Elf_Internal_Rela rela;
10799 rela.r_offset = dest;
10801 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10803 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10804 rela.r_addend = (stub_entry->target_value
10805 + stub_entry->target_section->output_offset
10806 + stub_entry->target_section->output_section->vma);
10808 rl = (htab->elf.irelplt->contents
10809 + (htab->elf.irelplt->reloc_count++
10810 * sizeof (Elf64_External_Rela)));
10811 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10812 stub_entry->plt_ent->plt.offset |= 1;
10816 - elf_gp (plt->output_section->owner)
10817 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10819 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10821 info->callbacks->einfo
10822 (_("%P: linkage table error against `%T'\n"),
10823 stub_entry->h != NULL
10824 ? stub_entry->h->elf.root.root.string
10826 bfd_set_error (bfd_error_bad_value);
10827 htab->stub_error = TRUE;
10831 if (htab->params->plt_stub_align != 0)
10833 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10835 stub_entry->stub_sec->size += pad;
10836 stub_entry->stub_offset = stub_entry->stub_sec->size;
10841 if (info->emitrelocations)
10843 r = get_relocs (stub_entry->stub_sec,
10844 ((PPC_HA (off) != 0)
10846 ? 2 + (htab->params->plt_static_chain
10847 && PPC_HA (off + 16) == PPC_HA (off))
10851 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10852 if (bfd_big_endian (info->output_bfd))
10853 r[0].r_offset += 2;
10854 r[0].r_addend = dest;
10856 if (stub_entry->h != NULL
10857 && (stub_entry->h == htab->tls_get_addr_fd
10858 || stub_entry->h == htab->tls_get_addr)
10859 && !htab->params->no_tls_get_addr_opt)
10860 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10862 p = build_plt_stub (htab, stub_entry, loc, off, r);
10871 stub_entry->stub_sec->size += size;
10873 if (htab->params->emit_stub_syms)
10875 struct elf_link_hash_entry *h;
10878 const char *const stub_str[] = { "long_branch",
10879 "long_branch_r2off",
10881 "plt_branch_r2off",
10885 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10886 len2 = strlen (stub_entry->root.string);
10887 name = bfd_malloc (len1 + len2 + 2);
10890 memcpy (name, stub_entry->root.string, 9);
10891 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10892 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10893 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10896 if (h->root.type == bfd_link_hash_new)
10898 h->root.type = bfd_link_hash_defined;
10899 h->root.u.def.section = stub_entry->stub_sec;
10900 h->root.u.def.value = stub_entry->stub_offset;
10901 h->ref_regular = 1;
10902 h->def_regular = 1;
10903 h->ref_regular_nonweak = 1;
10904 h->forced_local = 1;
10912 /* As above, but don't actually build the stub. Just bump offset so
10913 we know stub section sizes, and select plt_branch stubs where
10914 long_branch stubs won't do. */
10917 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10919 struct ppc_stub_hash_entry *stub_entry;
10920 struct bfd_link_info *info;
10921 struct ppc_link_hash_table *htab;
10925 /* Massage our args to the form they really have. */
10926 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10929 htab = ppc_hash_table (info);
10933 if (stub_entry->stub_type == ppc_stub_plt_call
10934 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10937 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10938 if (off >= (bfd_vma) -2)
10940 plt = htab->elf.splt;
10941 if (!htab->elf.dynamic_sections_created
10942 || stub_entry->h == NULL
10943 || stub_entry->h->elf.dynindx == -1)
10944 plt = htab->elf.iplt;
10945 off += (plt->output_offset
10946 + plt->output_section->vma
10947 - elf_gp (plt->output_section->owner)
10948 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10950 size = plt_stub_size (htab, stub_entry, off);
10951 if (htab->params->plt_stub_align)
10952 size += plt_stub_pad (htab, stub_entry, off);
10953 if (info->emitrelocations)
10955 stub_entry->stub_sec->reloc_count
10956 += ((PPC_HA (off) != 0)
10958 ? 2 + (htab->params->plt_static_chain
10959 && PPC_HA (off + 16) == PPC_HA (off))
10961 stub_entry->stub_sec->flags |= SEC_RELOC;
10966 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10969 bfd_vma local_off = 0;
10971 off = (stub_entry->target_value
10972 + stub_entry->target_section->output_offset
10973 + stub_entry->target_section->output_section->vma);
10974 off -= (stub_entry->stub_sec->size
10975 + stub_entry->stub_sec->output_offset
10976 + stub_entry->stub_sec->output_section->vma);
10978 /* Reset the stub type from the plt variant in case we now
10979 can reach with a shorter stub. */
10980 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10981 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10984 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10986 r2off = get_r2off (info, stub_entry);
10987 if (r2off == 0 && htab->opd_abi)
10989 htab->stub_error = TRUE;
10993 if (PPC_HA (r2off) != 0)
10998 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11000 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11001 Do the same for -R objects without function descriptors. */
11002 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11003 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11006 struct ppc_branch_hash_entry *br_entry;
11008 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11009 stub_entry->root.string + 9,
11011 if (br_entry == NULL)
11013 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11014 stub_entry->root.string);
11015 htab->stub_error = TRUE;
11019 if (br_entry->iter != htab->stub_iteration)
11021 br_entry->iter = htab->stub_iteration;
11022 br_entry->offset = htab->brlt->size;
11023 htab->brlt->size += 8;
11025 if (htab->relbrlt != NULL)
11026 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11027 else if (info->emitrelocations)
11029 htab->brlt->reloc_count += 1;
11030 htab->brlt->flags |= SEC_RELOC;
11034 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11035 off = (br_entry->offset
11036 + htab->brlt->output_offset
11037 + htab->brlt->output_section->vma
11038 - elf_gp (htab->brlt->output_section->owner)
11039 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11041 if (info->emitrelocations)
11043 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11044 stub_entry->stub_sec->flags |= SEC_RELOC;
11047 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11050 if (PPC_HA (off) != 0)
11056 if (PPC_HA (off) != 0)
11059 if (PPC_HA (r2off) != 0)
11061 if (PPC_LO (r2off) != 0)
11065 else if (info->emitrelocations)
11067 stub_entry->stub_sec->reloc_count += 1;
11068 stub_entry->stub_sec->flags |= SEC_RELOC;
11072 stub_entry->stub_sec->size += size;
11076 /* Set up various things so that we can make a list of input sections
11077 for each output section included in the link. Returns -1 on error,
11078 0 when no stubs will be needed, and 1 on success. */
11081 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11084 int top_id, top_index, id;
11086 asection **input_list;
11088 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11093 /* Find the top input section id. */
11094 for (input_bfd = info->input_bfds, top_id = 3;
11096 input_bfd = input_bfd->link.next)
11098 for (section = input_bfd->sections;
11100 section = section->next)
11102 if (top_id < section->id)
11103 top_id = section->id;
11107 htab->top_id = top_id;
11108 amt = sizeof (struct map_stub) * (top_id + 1);
11109 htab->stub_group = bfd_zmalloc (amt);
11110 if (htab->stub_group == NULL)
11113 /* Set toc_off for com, und, abs and ind sections. */
11114 for (id = 0; id < 3; id++)
11115 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11117 /* We can't use output_bfd->section_count here to find the top output
11118 section index as some sections may have been removed, and
11119 strip_excluded_output_sections doesn't renumber the indices. */
11120 for (section = info->output_bfd->sections, top_index = 0;
11122 section = section->next)
11124 if (top_index < section->index)
11125 top_index = section->index;
11128 htab->top_index = top_index;
11129 amt = sizeof (asection *) * (top_index + 1);
11130 input_list = bfd_zmalloc (amt);
11131 htab->input_list = input_list;
11132 if (input_list == NULL)
11138 /* Set up for first pass at multitoc partitioning. */
11141 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11143 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11145 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11146 htab->toc_bfd = NULL;
11147 htab->toc_first_sec = NULL;
11150 /* The linker repeatedly calls this function for each TOC input section
11151 and linker generated GOT section. Group input bfds such that the toc
11152 within a group is less than 64k in size. */
11155 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11157 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11158 bfd_vma addr, off, limit;
11163 if (!htab->second_toc_pass)
11165 /* Keep track of the first .toc or .got section for this input bfd. */
11166 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11170 htab->toc_bfd = isec->owner;
11171 htab->toc_first_sec = isec;
11174 addr = isec->output_offset + isec->output_section->vma;
11175 off = addr - htab->toc_curr;
11176 limit = 0x80008000;
11177 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11179 if (off + isec->size > limit)
11181 addr = (htab->toc_first_sec->output_offset
11182 + htab->toc_first_sec->output_section->vma);
11183 htab->toc_curr = addr;
11186 /* toc_curr is the base address of this toc group. Set elf_gp
11187 for the input section to be the offset relative to the
11188 output toc base plus 0x8000. Making the input elf_gp an
11189 offset allows us to move the toc as a whole without
11190 recalculating input elf_gp. */
11191 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11192 off += TOC_BASE_OFF;
11194 /* Die if someone uses a linker script that doesn't keep input
11195 file .toc and .got together. */
11197 && elf_gp (isec->owner) != 0
11198 && elf_gp (isec->owner) != off)
11201 elf_gp (isec->owner) = off;
11205 /* During the second pass toc_first_sec points to the start of
11206 a toc group, and toc_curr is used to track the old elf_gp.
11207 We use toc_bfd to ensure we only look at each bfd once. */
11208 if (htab->toc_bfd == isec->owner)
11210 htab->toc_bfd = isec->owner;
11212 if (htab->toc_first_sec == NULL
11213 || htab->toc_curr != elf_gp (isec->owner))
11215 htab->toc_curr = elf_gp (isec->owner);
11216 htab->toc_first_sec = isec;
11218 addr = (htab->toc_first_sec->output_offset
11219 + htab->toc_first_sec->output_section->vma);
11220 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11221 elf_gp (isec->owner) = off;
11226 /* Called via elf_link_hash_traverse to merge GOT entries for global
11230 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11232 if (h->root.type == bfd_link_hash_indirect)
11235 merge_got_entries (&h->got.glist);
11240 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11244 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11246 struct got_entry *gent;
11248 if (h->root.type == bfd_link_hash_indirect)
11251 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11252 if (!gent->is_indirect)
11253 allocate_got (h, (struct bfd_link_info *) inf, gent);
11257 /* Called on the first multitoc pass after the last call to
11258 ppc64_elf_next_toc_section. This function removes duplicate GOT
11262 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11265 struct bfd *ibfd, *ibfd2;
11266 bfd_boolean done_something;
11268 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11270 if (!htab->do_multi_toc)
11273 /* Merge global sym got entries within a toc group. */
11274 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11276 /* And tlsld_got. */
11277 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11279 struct got_entry *ent, *ent2;
11281 if (!is_ppc64_elf (ibfd))
11284 ent = ppc64_tlsld_got (ibfd);
11285 if (!ent->is_indirect
11286 && ent->got.offset != (bfd_vma) -1)
11288 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11290 if (!is_ppc64_elf (ibfd2))
11293 ent2 = ppc64_tlsld_got (ibfd2);
11294 if (!ent2->is_indirect
11295 && ent2->got.offset != (bfd_vma) -1
11296 && elf_gp (ibfd2) == elf_gp (ibfd))
11298 ent2->is_indirect = TRUE;
11299 ent2->got.ent = ent;
11305 /* Zap sizes of got sections. */
11306 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11307 htab->elf.irelplt->size -= htab->got_reli_size;
11308 htab->got_reli_size = 0;
11310 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11312 asection *got, *relgot;
11314 if (!is_ppc64_elf (ibfd))
11317 got = ppc64_elf_tdata (ibfd)->got;
11320 got->rawsize = got->size;
11322 relgot = ppc64_elf_tdata (ibfd)->relgot;
11323 relgot->rawsize = relgot->size;
11328 /* Now reallocate the got, local syms first. We don't need to
11329 allocate section contents again since we never increase size. */
11330 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11332 struct got_entry **lgot_ents;
11333 struct got_entry **end_lgot_ents;
11334 struct plt_entry **local_plt;
11335 struct plt_entry **end_local_plt;
11336 unsigned char *lgot_masks;
11337 bfd_size_type locsymcount;
11338 Elf_Internal_Shdr *symtab_hdr;
11341 if (!is_ppc64_elf (ibfd))
11344 lgot_ents = elf_local_got_ents (ibfd);
11348 symtab_hdr = &elf_symtab_hdr (ibfd);
11349 locsymcount = symtab_hdr->sh_info;
11350 end_lgot_ents = lgot_ents + locsymcount;
11351 local_plt = (struct plt_entry **) end_lgot_ents;
11352 end_local_plt = local_plt + locsymcount;
11353 lgot_masks = (unsigned char *) end_local_plt;
11354 s = ppc64_elf_tdata (ibfd)->got;
11355 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11357 struct got_entry *ent;
11359 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11361 unsigned int ent_size = 8;
11362 unsigned int rel_size = sizeof (Elf64_External_Rela);
11364 ent->got.offset = s->size;
11365 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11370 s->size += ent_size;
11371 if ((*lgot_masks & PLT_IFUNC) != 0)
11373 htab->elf.irelplt->size += rel_size;
11374 htab->got_reli_size += rel_size;
11376 else if (info->shared)
11378 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11379 srel->size += rel_size;
11385 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11387 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11389 struct got_entry *ent;
11391 if (!is_ppc64_elf (ibfd))
11394 ent = ppc64_tlsld_got (ibfd);
11395 if (!ent->is_indirect
11396 && ent->got.offset != (bfd_vma) -1)
11398 asection *s = ppc64_elf_tdata (ibfd)->got;
11399 ent->got.offset = s->size;
11403 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11404 srel->size += sizeof (Elf64_External_Rela);
11409 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11410 if (!done_something)
11411 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11415 if (!is_ppc64_elf (ibfd))
11418 got = ppc64_elf_tdata (ibfd)->got;
11421 done_something = got->rawsize != got->size;
11422 if (done_something)
11427 if (done_something)
11428 (*htab->params->layout_sections_again) ();
11430 /* Set up for second pass over toc sections to recalculate elf_gp
11431 on input sections. */
11432 htab->toc_bfd = NULL;
11433 htab->toc_first_sec = NULL;
11434 htab->second_toc_pass = TRUE;
11435 return done_something;
11438 /* Called after second pass of multitoc partitioning. */
11441 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11443 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11445 /* After the second pass, toc_curr tracks the TOC offset used
11446 for code sections below in ppc64_elf_next_input_section. */
11447 htab->toc_curr = TOC_BASE_OFF;
11450 /* No toc references were found in ISEC. If the code in ISEC makes no
11451 calls, then there's no need to use toc adjusting stubs when branching
11452 into ISEC. Actually, indirect calls from ISEC are OK as they will
11453 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11454 needed, and 2 if a cyclical call-graph was found but no other reason
11455 for a stub was detected. If called from the top level, a return of
11456 2 means the same as a return of 0. */
11459 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11463 /* Mark this section as checked. */
11464 isec->call_check_done = 1;
11466 /* We know none of our code bearing sections will need toc stubs. */
11467 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11470 if (isec->size == 0)
11473 if (isec->output_section == NULL)
11477 if (isec->reloc_count != 0)
11479 Elf_Internal_Rela *relstart, *rel;
11480 Elf_Internal_Sym *local_syms;
11481 struct ppc_link_hash_table *htab;
11483 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11484 info->keep_memory);
11485 if (relstart == NULL)
11488 /* Look for branches to outside of this section. */
11490 htab = ppc_hash_table (info);
11494 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11496 enum elf_ppc64_reloc_type r_type;
11497 unsigned long r_symndx;
11498 struct elf_link_hash_entry *h;
11499 struct ppc_link_hash_entry *eh;
11500 Elf_Internal_Sym *sym;
11502 struct _opd_sec_data *opd;
11506 r_type = ELF64_R_TYPE (rel->r_info);
11507 if (r_type != R_PPC64_REL24
11508 && r_type != R_PPC64_REL14
11509 && r_type != R_PPC64_REL14_BRTAKEN
11510 && r_type != R_PPC64_REL14_BRNTAKEN)
11513 r_symndx = ELF64_R_SYM (rel->r_info);
11514 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11521 /* Calls to dynamic lib functions go through a plt call stub
11523 eh = (struct ppc_link_hash_entry *) h;
11525 && (eh->elf.plt.plist != NULL
11527 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11533 if (sym_sec == NULL)
11534 /* Ignore other undefined symbols. */
11537 /* Assume branches to other sections not included in the
11538 link need stubs too, to cover -R and absolute syms. */
11539 if (sym_sec->output_section == NULL)
11546 sym_value = sym->st_value;
11549 if (h->root.type != bfd_link_hash_defined
11550 && h->root.type != bfd_link_hash_defweak)
11552 sym_value = h->root.u.def.value;
11554 sym_value += rel->r_addend;
11556 /* If this branch reloc uses an opd sym, find the code section. */
11557 opd = get_opd_info (sym_sec);
11560 if (h == NULL && opd->adjust != NULL)
11564 adjust = opd->adjust[sym->st_value / 8];
11566 /* Assume deleted functions won't ever be called. */
11568 sym_value += adjust;
11571 dest = opd_entry_value (sym_sec, sym_value,
11572 &sym_sec, NULL, FALSE);
11573 if (dest == (bfd_vma) -1)
11578 + sym_sec->output_offset
11579 + sym_sec->output_section->vma);
11581 /* Ignore branch to self. */
11582 if (sym_sec == isec)
11585 /* If the called function uses the toc, we need a stub. */
11586 if (sym_sec->has_toc_reloc
11587 || sym_sec->makes_toc_func_call)
11593 /* Assume any branch that needs a long branch stub might in fact
11594 need a plt_branch stub. A plt_branch stub uses r2. */
11595 else if (dest - (isec->output_offset
11596 + isec->output_section->vma
11597 + rel->r_offset) + (1 << 25)
11598 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11606 /* If calling back to a section in the process of being
11607 tested, we can't say for sure that no toc adjusting stubs
11608 are needed, so don't return zero. */
11609 else if (sym_sec->call_check_in_progress)
11612 /* Branches to another section that itself doesn't have any TOC
11613 references are OK. Recursively call ourselves to check. */
11614 else if (!sym_sec->call_check_done)
11618 /* Mark current section as indeterminate, so that other
11619 sections that call back to current won't be marked as
11621 isec->call_check_in_progress = 1;
11622 recur = toc_adjusting_stub_needed (info, sym_sec);
11623 isec->call_check_in_progress = 0;
11634 if (local_syms != NULL
11635 && (elf_symtab_hdr (isec->owner).contents
11636 != (unsigned char *) local_syms))
11638 if (elf_section_data (isec)->relocs != relstart)
11643 && isec->map_head.s != NULL
11644 && (strcmp (isec->output_section->name, ".init") == 0
11645 || strcmp (isec->output_section->name, ".fini") == 0))
11647 if (isec->map_head.s->has_toc_reloc
11648 || isec->map_head.s->makes_toc_func_call)
11650 else if (!isec->map_head.s->call_check_done)
11653 isec->call_check_in_progress = 1;
11654 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11655 isec->call_check_in_progress = 0;
11662 isec->makes_toc_func_call = 1;
11667 /* The linker repeatedly calls this function for each input section,
11668 in the order that input sections are linked into output sections.
11669 Build lists of input sections to determine groupings between which
11670 we may insert linker stubs. */
11673 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11675 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11680 if ((isec->output_section->flags & SEC_CODE) != 0
11681 && isec->output_section->index <= htab->top_index)
11683 asection **list = htab->input_list + isec->output_section->index;
11684 /* Steal the link_sec pointer for our list. */
11685 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11686 /* This happens to make the list in reverse order,
11687 which is what we want. */
11688 PREV_SEC (isec) = *list;
11692 if (htab->multi_toc_needed)
11694 /* Analyse sections that aren't already flagged as needing a
11695 valid toc pointer. Exclude .fixup for the linux kernel.
11696 .fixup contains branches, but only back to the function that
11697 hit an exception. */
11698 if (!(isec->has_toc_reloc
11699 || (isec->flags & SEC_CODE) == 0
11700 || strcmp (isec->name, ".fixup") == 0
11701 || isec->call_check_done))
11703 if (toc_adjusting_stub_needed (info, isec) < 0)
11706 /* Make all sections use the TOC assigned for this object file.
11707 This will be wrong for pasted sections; We fix that in
11708 check_pasted_section(). */
11709 if (elf_gp (isec->owner) != 0)
11710 htab->toc_curr = elf_gp (isec->owner);
11713 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11717 /* Check that all .init and .fini sections use the same toc, if they
11718 have toc relocs. */
11721 check_pasted_section (struct bfd_link_info *info, const char *name)
11723 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11727 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11728 bfd_vma toc_off = 0;
11731 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11732 if (i->has_toc_reloc)
11735 toc_off = htab->stub_group[i->id].toc_off;
11736 else if (toc_off != htab->stub_group[i->id].toc_off)
11741 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11742 if (i->makes_toc_func_call)
11744 toc_off = htab->stub_group[i->id].toc_off;
11748 /* Make sure the whole pasted function uses the same toc offset. */
11750 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11751 htab->stub_group[i->id].toc_off = toc_off;
11757 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11759 return (check_pasted_section (info, ".init")
11760 & check_pasted_section (info, ".fini"));
11763 /* See whether we can group stub sections together. Grouping stub
11764 sections may result in fewer stubs. More importantly, we need to
11765 put all .init* and .fini* stubs at the beginning of the .init or
11766 .fini output sections respectively, because glibc splits the
11767 _init and _fini functions into multiple parts. Putting a stub in
11768 the middle of a function is not a good idea. */
11771 group_sections (struct ppc_link_hash_table *htab,
11772 bfd_size_type stub_group_size,
11773 bfd_boolean stubs_always_before_branch)
11776 bfd_size_type stub14_group_size;
11777 bfd_boolean suppress_size_errors;
11779 suppress_size_errors = FALSE;
11780 stub14_group_size = stub_group_size;
11781 if (stub_group_size == 1)
11783 /* Default values. */
11784 if (stubs_always_before_branch)
11786 stub_group_size = 0x1e00000;
11787 stub14_group_size = 0x7800;
11791 stub_group_size = 0x1c00000;
11792 stub14_group_size = 0x7000;
11794 suppress_size_errors = TRUE;
11797 list = htab->input_list + htab->top_index;
11800 asection *tail = *list;
11801 while (tail != NULL)
11805 bfd_size_type total;
11806 bfd_boolean big_sec;
11810 total = tail->size;
11811 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11812 && ppc64_elf_section_data (tail)->has_14bit_branch
11813 ? stub14_group_size : stub_group_size);
11814 if (big_sec && !suppress_size_errors)
11815 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11816 tail->owner, tail);
11817 curr_toc = htab->stub_group[tail->id].toc_off;
11819 while ((prev = PREV_SEC (curr)) != NULL
11820 && ((total += curr->output_offset - prev->output_offset)
11821 < (ppc64_elf_section_data (prev) != NULL
11822 && ppc64_elf_section_data (prev)->has_14bit_branch
11823 ? stub14_group_size : stub_group_size))
11824 && htab->stub_group[prev->id].toc_off == curr_toc)
11827 /* OK, the size from the start of CURR to the end is less
11828 than stub_group_size and thus can be handled by one stub
11829 section. (or the tail section is itself larger than
11830 stub_group_size, in which case we may be toast.) We
11831 should really be keeping track of the total size of stubs
11832 added here, as stubs contribute to the final output
11833 section size. That's a little tricky, and this way will
11834 only break if stubs added make the total size more than
11835 2^25, ie. for the default stub_group_size, if stubs total
11836 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11839 prev = PREV_SEC (tail);
11840 /* Set up this stub group. */
11841 htab->stub_group[tail->id].link_sec = curr;
11843 while (tail != curr && (tail = prev) != NULL);
11845 /* But wait, there's more! Input sections up to stub_group_size
11846 bytes before the stub section can be handled by it too.
11847 Don't do this if we have a really large section after the
11848 stubs, as adding more stubs increases the chance that
11849 branches may not reach into the stub section. */
11850 if (!stubs_always_before_branch && !big_sec)
11853 while (prev != NULL
11854 && ((total += tail->output_offset - prev->output_offset)
11855 < (ppc64_elf_section_data (prev) != NULL
11856 && ppc64_elf_section_data (prev)->has_14bit_branch
11857 ? stub14_group_size : stub_group_size))
11858 && htab->stub_group[prev->id].toc_off == curr_toc)
11861 prev = PREV_SEC (tail);
11862 htab->stub_group[tail->id].link_sec = curr;
11868 while (list-- != htab->input_list);
11869 free (htab->input_list);
11873 static const unsigned char glink_eh_frame_cie[] =
11875 0, 0, 0, 16, /* length. */
11876 0, 0, 0, 0, /* id. */
11877 1, /* CIE version. */
11878 'z', 'R', 0, /* Augmentation string. */
11879 4, /* Code alignment. */
11880 0x78, /* Data alignment. */
11882 1, /* Augmentation size. */
11883 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11884 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11887 /* Stripping output sections is normally done before dynamic section
11888 symbols have been allocated. This function is called later, and
11889 handles cases like htab->brlt which is mapped to its own output
11893 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11895 if (isec->size == 0
11896 && isec->output_section->size == 0
11897 && !(isec->output_section->flags & SEC_KEEP)
11898 && !bfd_section_removed_from_list (info->output_bfd,
11899 isec->output_section)
11900 && elf_section_data (isec->output_section)->dynindx == 0)
11902 isec->output_section->flags |= SEC_EXCLUDE;
11903 bfd_section_list_remove (info->output_bfd, isec->output_section);
11904 info->output_bfd->section_count--;
11908 /* Determine and set the size of the stub section for a final link.
11910 The basic idea here is to examine all the relocations looking for
11911 PC-relative calls to a target that is unreachable with a "bl"
11915 ppc64_elf_size_stubs (struct bfd_link_info *info)
11917 bfd_size_type stub_group_size;
11918 bfd_boolean stubs_always_before_branch;
11919 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11924 if (htab->params->plt_thread_safe == -1 && !info->executable)
11925 htab->params->plt_thread_safe = 1;
11926 if (!htab->opd_abi)
11927 htab->params->plt_thread_safe = 0;
11928 else if (htab->params->plt_thread_safe == -1)
11930 static const char *const thread_starter[] =
11934 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11936 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11937 "mq_notify", "create_timer",
11941 "GOMP_parallel_start",
11942 "GOMP_parallel_loop_static_start",
11943 "GOMP_parallel_loop_dynamic_start",
11944 "GOMP_parallel_loop_guided_start",
11945 "GOMP_parallel_loop_runtime_start",
11946 "GOMP_parallel_sections_start",
11950 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11952 struct elf_link_hash_entry *h;
11953 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11954 FALSE, FALSE, TRUE);
11955 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11956 if (htab->params->plt_thread_safe)
11960 stubs_always_before_branch = htab->params->group_size < 0;
11961 if (htab->params->group_size < 0)
11962 stub_group_size = -htab->params->group_size;
11964 stub_group_size = htab->params->group_size;
11966 group_sections (htab, stub_group_size, stubs_always_before_branch);
11971 unsigned int bfd_indx;
11972 asection *stub_sec;
11974 htab->stub_iteration += 1;
11976 for (input_bfd = info->input_bfds, bfd_indx = 0;
11978 input_bfd = input_bfd->link.next, bfd_indx++)
11980 Elf_Internal_Shdr *symtab_hdr;
11982 Elf_Internal_Sym *local_syms = NULL;
11984 if (!is_ppc64_elf (input_bfd))
11987 /* We'll need the symbol table in a second. */
11988 symtab_hdr = &elf_symtab_hdr (input_bfd);
11989 if (symtab_hdr->sh_info == 0)
11992 /* Walk over each section attached to the input bfd. */
11993 for (section = input_bfd->sections;
11995 section = section->next)
11997 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11999 /* If there aren't any relocs, then there's nothing more
12001 if ((section->flags & SEC_RELOC) == 0
12002 || (section->flags & SEC_ALLOC) == 0
12003 || (section->flags & SEC_LOAD) == 0
12004 || (section->flags & SEC_CODE) == 0
12005 || section->reloc_count == 0)
12008 /* If this section is a link-once section that will be
12009 discarded, then don't create any stubs. */
12010 if (section->output_section == NULL
12011 || section->output_section->owner != info->output_bfd)
12014 /* Get the relocs. */
12016 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12017 info->keep_memory);
12018 if (internal_relocs == NULL)
12019 goto error_ret_free_local;
12021 /* Now examine each relocation. */
12022 irela = internal_relocs;
12023 irelaend = irela + section->reloc_count;
12024 for (; irela < irelaend; irela++)
12026 enum elf_ppc64_reloc_type r_type;
12027 unsigned int r_indx;
12028 enum ppc_stub_type stub_type;
12029 struct ppc_stub_hash_entry *stub_entry;
12030 asection *sym_sec, *code_sec;
12031 bfd_vma sym_value, code_value;
12032 bfd_vma destination;
12033 unsigned long local_off;
12034 bfd_boolean ok_dest;
12035 struct ppc_link_hash_entry *hash;
12036 struct ppc_link_hash_entry *fdh;
12037 struct elf_link_hash_entry *h;
12038 Elf_Internal_Sym *sym;
12040 const asection *id_sec;
12041 struct _opd_sec_data *opd;
12042 struct plt_entry *plt_ent;
12044 r_type = ELF64_R_TYPE (irela->r_info);
12045 r_indx = ELF64_R_SYM (irela->r_info);
12047 if (r_type >= R_PPC64_max)
12049 bfd_set_error (bfd_error_bad_value);
12050 goto error_ret_free_internal;
12053 /* Only look for stubs on branch instructions. */
12054 if (r_type != R_PPC64_REL24
12055 && r_type != R_PPC64_REL14
12056 && r_type != R_PPC64_REL14_BRTAKEN
12057 && r_type != R_PPC64_REL14_BRNTAKEN)
12060 /* Now determine the call target, its name, value,
12062 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12063 r_indx, input_bfd))
12064 goto error_ret_free_internal;
12065 hash = (struct ppc_link_hash_entry *) h;
12072 sym_value = sym->st_value;
12075 else if (hash->elf.root.type == bfd_link_hash_defined
12076 || hash->elf.root.type == bfd_link_hash_defweak)
12078 sym_value = hash->elf.root.u.def.value;
12079 if (sym_sec->output_section != NULL)
12082 else if (hash->elf.root.type == bfd_link_hash_undefweak
12083 || hash->elf.root.type == bfd_link_hash_undefined)
12085 /* Recognise an old ABI func code entry sym, and
12086 use the func descriptor sym instead if it is
12088 if (hash->elf.root.root.string[0] == '.'
12089 && (fdh = lookup_fdh (hash, htab)) != NULL)
12091 if (fdh->elf.root.type == bfd_link_hash_defined
12092 || fdh->elf.root.type == bfd_link_hash_defweak)
12094 sym_sec = fdh->elf.root.u.def.section;
12095 sym_value = fdh->elf.root.u.def.value;
12096 if (sym_sec->output_section != NULL)
12105 bfd_set_error (bfd_error_bad_value);
12106 goto error_ret_free_internal;
12113 sym_value += irela->r_addend;
12114 destination = (sym_value
12115 + sym_sec->output_offset
12116 + sym_sec->output_section->vma);
12117 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12122 code_sec = sym_sec;
12123 code_value = sym_value;
12124 opd = get_opd_info (sym_sec);
12129 if (hash == NULL && opd->adjust != NULL)
12131 long adjust = opd->adjust[sym_value / 8];
12134 code_value += adjust;
12135 sym_value += adjust;
12137 dest = opd_entry_value (sym_sec, sym_value,
12138 &code_sec, &code_value, FALSE);
12139 if (dest != (bfd_vma) -1)
12141 destination = dest;
12144 /* Fixup old ABI sym to point at code
12146 hash->elf.root.type = bfd_link_hash_defweak;
12147 hash->elf.root.u.def.section = code_sec;
12148 hash->elf.root.u.def.value = code_value;
12153 /* Determine what (if any) linker stub is needed. */
12155 stub_type = ppc_type_of_stub (section, irela, &hash,
12156 &plt_ent, destination,
12159 if (stub_type != ppc_stub_plt_call)
12161 /* Check whether we need a TOC adjusting stub.
12162 Since the linker pastes together pieces from
12163 different object files when creating the
12164 _init and _fini functions, it may be that a
12165 call to what looks like a local sym is in
12166 fact a call needing a TOC adjustment. */
12167 if (code_sec != NULL
12168 && code_sec->output_section != NULL
12169 && (htab->stub_group[code_sec->id].toc_off
12170 != htab->stub_group[section->id].toc_off)
12171 && (code_sec->has_toc_reloc
12172 || code_sec->makes_toc_func_call))
12173 stub_type = ppc_stub_long_branch_r2off;
12176 if (stub_type == ppc_stub_none)
12179 /* __tls_get_addr calls might be eliminated. */
12180 if (stub_type != ppc_stub_plt_call
12182 && (hash == htab->tls_get_addr
12183 || hash == htab->tls_get_addr_fd)
12184 && section->has_tls_reloc
12185 && irela != internal_relocs)
12187 /* Get tls info. */
12188 unsigned char *tls_mask;
12190 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12191 irela - 1, input_bfd))
12192 goto error_ret_free_internal;
12193 if (*tls_mask != 0)
12197 if (stub_type == ppc_stub_plt_call
12198 && irela + 1 < irelaend
12199 && irela[1].r_offset == irela->r_offset + 4
12200 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12202 if (!tocsave_find (htab, INSERT,
12203 &local_syms, irela + 1, input_bfd))
12204 goto error_ret_free_internal;
12206 else if (stub_type == ppc_stub_plt_call)
12207 stub_type = ppc_stub_plt_call_r2save;
12209 /* Support for grouping stub sections. */
12210 id_sec = htab->stub_group[section->id].link_sec;
12212 /* Get the name of this stub. */
12213 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12215 goto error_ret_free_internal;
12217 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12218 stub_name, FALSE, FALSE);
12219 if (stub_entry != NULL)
12221 /* The proper stub has already been created. */
12223 if (stub_type == ppc_stub_plt_call_r2save)
12224 stub_entry->stub_type = stub_type;
12228 stub_entry = ppc_add_stub (stub_name, section, info);
12229 if (stub_entry == NULL)
12232 error_ret_free_internal:
12233 if (elf_section_data (section)->relocs == NULL)
12234 free (internal_relocs);
12235 error_ret_free_local:
12236 if (local_syms != NULL
12237 && (symtab_hdr->contents
12238 != (unsigned char *) local_syms))
12243 stub_entry->stub_type = stub_type;
12244 if (stub_type != ppc_stub_plt_call
12245 && stub_type != ppc_stub_plt_call_r2save)
12247 stub_entry->target_value = code_value;
12248 stub_entry->target_section = code_sec;
12252 stub_entry->target_value = sym_value;
12253 stub_entry->target_section = sym_sec;
12255 stub_entry->h = hash;
12256 stub_entry->plt_ent = plt_ent;
12257 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12259 if (stub_entry->h != NULL)
12260 htab->stub_globals += 1;
12263 /* We're done with the internal relocs, free them. */
12264 if (elf_section_data (section)->relocs != internal_relocs)
12265 free (internal_relocs);
12268 if (local_syms != NULL
12269 && symtab_hdr->contents != (unsigned char *) local_syms)
12271 if (!info->keep_memory)
12274 symtab_hdr->contents = (unsigned char *) local_syms;
12278 /* We may have added some stubs. Find out the new size of the
12280 for (stub_sec = htab->params->stub_bfd->sections;
12282 stub_sec = stub_sec->next)
12283 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12285 stub_sec->rawsize = stub_sec->size;
12286 stub_sec->size = 0;
12287 stub_sec->reloc_count = 0;
12288 stub_sec->flags &= ~SEC_RELOC;
12291 htab->brlt->size = 0;
12292 htab->brlt->reloc_count = 0;
12293 htab->brlt->flags &= ~SEC_RELOC;
12294 if (htab->relbrlt != NULL)
12295 htab->relbrlt->size = 0;
12297 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12299 if (info->emitrelocations
12300 && htab->glink != NULL && htab->glink->size != 0)
12302 htab->glink->reloc_count = 1;
12303 htab->glink->flags |= SEC_RELOC;
12306 if (htab->glink_eh_frame != NULL
12307 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12308 && htab->glink_eh_frame->output_section->size != 0)
12310 size_t size = 0, align;
12312 for (stub_sec = htab->params->stub_bfd->sections;
12314 stub_sec = stub_sec->next)
12315 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12317 if (htab->glink != NULL && htab->glink->size != 0)
12320 size += sizeof (glink_eh_frame_cie);
12322 align <<= htab->glink_eh_frame->output_section->alignment_power;
12324 size = (size + align) & ~align;
12325 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12326 htab->glink_eh_frame->size = size;
12329 if (htab->params->plt_stub_align != 0)
12330 for (stub_sec = htab->params->stub_bfd->sections;
12332 stub_sec = stub_sec->next)
12333 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12334 stub_sec->size = ((stub_sec->size
12335 + (1 << htab->params->plt_stub_align) - 1)
12336 & (-1 << htab->params->plt_stub_align));
12338 for (stub_sec = htab->params->stub_bfd->sections;
12340 stub_sec = stub_sec->next)
12341 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12342 && stub_sec->rawsize != stub_sec->size)
12345 /* Exit from this loop when no stubs have been added, and no stubs
12346 have changed size. */
12347 if (stub_sec == NULL
12348 && (htab->glink_eh_frame == NULL
12349 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12352 /* Ask the linker to do its stuff. */
12353 (*htab->params->layout_sections_again) ();
12356 maybe_strip_output (info, htab->brlt);
12357 if (htab->glink_eh_frame != NULL)
12358 maybe_strip_output (info, htab->glink_eh_frame);
12363 /* Called after we have determined section placement. If sections
12364 move, we'll be called again. Provide a value for TOCstart. */
12367 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12372 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12373 order. The TOC starts where the first of these sections starts. */
12374 s = bfd_get_section_by_name (obfd, ".got");
12375 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12376 s = bfd_get_section_by_name (obfd, ".toc");
12377 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12378 s = bfd_get_section_by_name (obfd, ".tocbss");
12379 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12380 s = bfd_get_section_by_name (obfd, ".plt");
12381 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12383 /* This may happen for
12384 o references to TOC base (SYM@toc / TOC[tc0]) without a
12386 o bad linker script
12387 o --gc-sections and empty TOC sections
12389 FIXME: Warn user? */
12391 /* Look for a likely section. We probably won't even be
12393 for (s = obfd->sections; s != NULL; s = s->next)
12394 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12396 == (SEC_ALLOC | SEC_SMALL_DATA))
12399 for (s = obfd->sections; s != NULL; s = s->next)
12400 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12401 == (SEC_ALLOC | SEC_SMALL_DATA))
12404 for (s = obfd->sections; s != NULL; s = s->next)
12405 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12409 for (s = obfd->sections; s != NULL; s = s->next)
12410 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12416 TOCstart = s->output_section->vma + s->output_offset;
12418 _bfd_set_gp_value (obfd, TOCstart);
12420 if (info != NULL && s != NULL)
12422 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12426 if (htab->elf.hgot != NULL)
12428 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12429 htab->elf.hgot->root.u.def.section = s;
12434 struct bfd_link_hash_entry *bh = NULL;
12435 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12436 s, TOC_BASE_OFF, NULL, FALSE,
12443 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12444 write out any global entry stubs. */
12447 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12449 struct bfd_link_info *info;
12450 struct ppc_link_hash_table *htab;
12451 struct plt_entry *pent;
12454 if (h->root.type == bfd_link_hash_indirect)
12457 if (!h->pointer_equality_needed)
12460 if (h->def_regular)
12464 htab = ppc_hash_table (info);
12469 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12470 if (pent->plt.offset != (bfd_vma) -1
12471 && pent->addend == 0)
12477 p = s->contents + h->root.u.def.value;
12478 plt = htab->elf.splt;
12479 if (!htab->elf.dynamic_sections_created
12480 || h->dynindx == -1)
12481 plt = htab->elf.iplt;
12482 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12483 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12485 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12487 info->callbacks->einfo
12488 (_("%P: linkage table error against `%T'\n"),
12489 h->root.root.string);
12490 bfd_set_error (bfd_error_bad_value);
12491 htab->stub_error = TRUE;
12494 if (PPC_HA (off) != 0)
12496 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12499 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12501 bfd_put_32 (s->owner, MTCTR_R12, p);
12503 bfd_put_32 (s->owner, BCTR, p);
12509 /* Build all the stubs associated with the current output file.
12510 The stubs are kept in a hash table attached to the main linker
12511 hash table. This function is called via gldelf64ppc_finish. */
12514 ppc64_elf_build_stubs (struct bfd_link_info *info,
12517 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12518 asection *stub_sec;
12520 int stub_sec_count = 0;
12525 /* Allocate memory to hold the linker stubs. */
12526 for (stub_sec = htab->params->stub_bfd->sections;
12528 stub_sec = stub_sec->next)
12529 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12530 && stub_sec->size != 0)
12532 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12533 if (stub_sec->contents == NULL)
12535 /* We want to check that built size is the same as calculated
12536 size. rawsize is a convenient location to use. */
12537 stub_sec->rawsize = stub_sec->size;
12538 stub_sec->size = 0;
12541 if (htab->glink != NULL && htab->glink->size != 0)
12546 /* Build the .glink plt call stub. */
12547 if (htab->params->emit_stub_syms)
12549 struct elf_link_hash_entry *h;
12550 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12551 TRUE, FALSE, FALSE);
12554 if (h->root.type == bfd_link_hash_new)
12556 h->root.type = bfd_link_hash_defined;
12557 h->root.u.def.section = htab->glink;
12558 h->root.u.def.value = 8;
12559 h->ref_regular = 1;
12560 h->def_regular = 1;
12561 h->ref_regular_nonweak = 1;
12562 h->forced_local = 1;
12566 plt0 = (htab->elf.splt->output_section->vma
12567 + htab->elf.splt->output_offset
12569 if (info->emitrelocations)
12571 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12574 r->r_offset = (htab->glink->output_offset
12575 + htab->glink->output_section->vma);
12576 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12577 r->r_addend = plt0;
12579 p = htab->glink->contents;
12580 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12581 bfd_put_64 (htab->glink->owner, plt0, p);
12585 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12587 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12589 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12591 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12593 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12595 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12597 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12599 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12601 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12603 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12608 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12610 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12612 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12614 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12616 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12618 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12620 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12622 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12624 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12626 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12628 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12630 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12633 bfd_put_32 (htab->glink->owner, BCTR, p);
12635 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12637 bfd_put_32 (htab->glink->owner, NOP, p);
12641 /* Build the .glink lazy link call stubs. */
12643 while (p < htab->glink->contents + htab->glink->rawsize)
12649 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12654 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12656 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12661 bfd_put_32 (htab->glink->owner,
12662 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12667 /* Build .glink global entry stubs. */
12668 if (htab->glink->size > htab->glink->rawsize)
12669 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12672 if (htab->brlt->size != 0)
12674 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12676 if (htab->brlt->contents == NULL)
12679 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12681 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12682 htab->relbrlt->size);
12683 if (htab->relbrlt->contents == NULL)
12687 if (htab->glink_eh_frame != NULL
12688 && htab->glink_eh_frame->size != 0)
12691 bfd_byte *last_fde;
12692 size_t last_fde_len, size, align, pad;
12694 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12697 htab->glink_eh_frame->contents = p;
12700 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12702 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12703 /* CIE length (rewrite in case little-endian). */
12704 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12705 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12706 p += sizeof (glink_eh_frame_cie);
12708 for (stub_sec = htab->params->stub_bfd->sections;
12710 stub_sec = stub_sec->next)
12711 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12716 bfd_put_32 (htab->elf.dynobj, 16, p);
12719 val = p - htab->glink_eh_frame->contents;
12720 bfd_put_32 (htab->elf.dynobj, val, p);
12722 /* Offset to stub section. */
12723 val = (stub_sec->output_section->vma
12724 + stub_sec->output_offset);
12725 val -= (htab->glink_eh_frame->output_section->vma
12726 + htab->glink_eh_frame->output_offset);
12727 val -= p - htab->glink_eh_frame->contents;
12728 if (val + 0x80000000 > 0xffffffff)
12730 info->callbacks->einfo
12731 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12735 bfd_put_32 (htab->elf.dynobj, val, p);
12737 /* stub section size. */
12738 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12740 /* Augmentation. */
12745 if (htab->glink != NULL && htab->glink->size != 0)
12750 bfd_put_32 (htab->elf.dynobj, 20, p);
12753 val = p - htab->glink_eh_frame->contents;
12754 bfd_put_32 (htab->elf.dynobj, val, p);
12756 /* Offset to .glink. */
12757 val = (htab->glink->output_section->vma
12758 + htab->glink->output_offset
12760 val -= (htab->glink_eh_frame->output_section->vma
12761 + htab->glink_eh_frame->output_offset);
12762 val -= p - htab->glink_eh_frame->contents;
12763 if (val + 0x80000000 > 0xffffffff)
12765 info->callbacks->einfo
12766 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12767 htab->glink->name);
12770 bfd_put_32 (htab->elf.dynobj, val, p);
12773 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12775 /* Augmentation. */
12778 *p++ = DW_CFA_advance_loc + 1;
12779 *p++ = DW_CFA_register;
12782 *p++ = DW_CFA_advance_loc + 4;
12783 *p++ = DW_CFA_restore_extended;
12786 /* Subsume any padding into the last FDE if user .eh_frame
12787 sections are aligned more than glink_eh_frame. Otherwise any
12788 zero padding will be seen as a terminator. */
12789 size = p - htab->glink_eh_frame->contents;
12791 align <<= htab->glink_eh_frame->output_section->alignment_power;
12793 pad = ((size + align) & ~align) - size;
12794 htab->glink_eh_frame->size = size + pad;
12795 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12798 /* Build the stubs as directed by the stub hash table. */
12799 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12801 if (htab->relbrlt != NULL)
12802 htab->relbrlt->reloc_count = 0;
12804 if (htab->params->plt_stub_align != 0)
12805 for (stub_sec = htab->params->stub_bfd->sections;
12807 stub_sec = stub_sec->next)
12808 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12809 stub_sec->size = ((stub_sec->size
12810 + (1 << htab->params->plt_stub_align) - 1)
12811 & (-1 << htab->params->plt_stub_align));
12813 for (stub_sec = htab->params->stub_bfd->sections;
12815 stub_sec = stub_sec->next)
12816 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12818 stub_sec_count += 1;
12819 if (stub_sec->rawsize != stub_sec->size)
12823 if (stub_sec != NULL
12824 || (htab->glink_eh_frame != NULL
12825 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12827 htab->stub_error = TRUE;
12828 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12831 if (htab->stub_error)
12836 *stats = bfd_malloc (500);
12837 if (*stats == NULL)
12840 sprintf (*stats, _("linker stubs in %u group%s\n"
12842 " toc adjust %lu\n"
12843 " long branch %lu\n"
12844 " long toc adj %lu\n"
12846 " plt call toc %lu"),
12848 stub_sec_count == 1 ? "" : "s",
12849 htab->stub_count[ppc_stub_long_branch - 1],
12850 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12851 htab->stub_count[ppc_stub_plt_branch - 1],
12852 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12853 htab->stub_count[ppc_stub_plt_call - 1],
12854 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12859 /* This function undoes the changes made by add_symbol_adjust. */
12862 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12864 struct ppc_link_hash_entry *eh;
12866 if (h->root.type == bfd_link_hash_indirect)
12869 eh = (struct ppc_link_hash_entry *) h;
12870 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12873 eh->elf.root.type = bfd_link_hash_undefined;
12878 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12880 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12883 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12886 /* What to do when ld finds relocations against symbols defined in
12887 discarded sections. */
12889 static unsigned int
12890 ppc64_elf_action_discarded (asection *sec)
12892 if (strcmp (".opd", sec->name) == 0)
12895 if (strcmp (".toc", sec->name) == 0)
12898 if (strcmp (".toc1", sec->name) == 0)
12901 return _bfd_elf_default_action_discarded (sec);
12904 /* The RELOCATE_SECTION function is called by the ELF backend linker
12905 to handle the relocations for a section.
12907 The relocs are always passed as Rela structures; if the section
12908 actually uses Rel structures, the r_addend field will always be
12911 This function is responsible for adjust the section contents as
12912 necessary, and (if using Rela relocs and generating a
12913 relocatable output file) adjusting the reloc addend as
12916 This function does not have to worry about setting the reloc
12917 address or the reloc symbol index.
12919 LOCAL_SYMS is a pointer to the swapped in local symbols.
12921 LOCAL_SECTIONS is an array giving the section in the input file
12922 corresponding to the st_shndx field of each local symbol.
12924 The global hash table entry for the global symbols can be found
12925 via elf_sym_hashes (input_bfd).
12927 When generating relocatable output, this function must handle
12928 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12929 going to be the section symbol corresponding to the output
12930 section, which means that the addend must be adjusted
12934 ppc64_elf_relocate_section (bfd *output_bfd,
12935 struct bfd_link_info *info,
12937 asection *input_section,
12938 bfd_byte *contents,
12939 Elf_Internal_Rela *relocs,
12940 Elf_Internal_Sym *local_syms,
12941 asection **local_sections)
12943 struct ppc_link_hash_table *htab;
12944 Elf_Internal_Shdr *symtab_hdr;
12945 struct elf_link_hash_entry **sym_hashes;
12946 Elf_Internal_Rela *rel;
12947 Elf_Internal_Rela *relend;
12948 Elf_Internal_Rela outrel;
12950 struct got_entry **local_got_ents;
12952 bfd_boolean ret = TRUE;
12953 bfd_boolean is_opd;
12954 /* Assume 'at' branch hints. */
12955 bfd_boolean is_isa_v2 = TRUE;
12956 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12958 /* Initialize howto table if needed. */
12959 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12962 htab = ppc_hash_table (info);
12966 /* Don't relocate stub sections. */
12967 if (input_section->owner == htab->params->stub_bfd)
12970 BFD_ASSERT (is_ppc64_elf (input_bfd));
12972 local_got_ents = elf_local_got_ents (input_bfd);
12973 TOCstart = elf_gp (output_bfd);
12974 symtab_hdr = &elf_symtab_hdr (input_bfd);
12975 sym_hashes = elf_sym_hashes (input_bfd);
12976 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12979 relend = relocs + input_section->reloc_count;
12980 for (; rel < relend; rel++)
12982 enum elf_ppc64_reloc_type r_type;
12984 bfd_reloc_status_type r;
12985 Elf_Internal_Sym *sym;
12987 struct elf_link_hash_entry *h_elf;
12988 struct ppc_link_hash_entry *h;
12989 struct ppc_link_hash_entry *fdh;
12990 const char *sym_name;
12991 unsigned long r_symndx, toc_symndx;
12992 bfd_vma toc_addend;
12993 unsigned char tls_mask, tls_gd, tls_type;
12994 unsigned char sym_type;
12995 bfd_vma relocation;
12996 bfd_boolean unresolved_reloc;
12997 bfd_boolean warned;
12998 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13001 struct ppc_stub_hash_entry *stub_entry;
13002 bfd_vma max_br_offset;
13004 const Elf_Internal_Rela orig_rel = *rel;
13005 reloc_howto_type *howto;
13006 struct reloc_howto_struct alt_howto;
13008 r_type = ELF64_R_TYPE (rel->r_info);
13009 r_symndx = ELF64_R_SYM (rel->r_info);
13011 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13012 symbol of the previous ADDR64 reloc. The symbol gives us the
13013 proper TOC base to use. */
13014 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13016 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13018 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13024 unresolved_reloc = FALSE;
13027 if (r_symndx < symtab_hdr->sh_info)
13029 /* It's a local symbol. */
13030 struct _opd_sec_data *opd;
13032 sym = local_syms + r_symndx;
13033 sec = local_sections[r_symndx];
13034 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13035 sym_type = ELF64_ST_TYPE (sym->st_info);
13036 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13037 opd = get_opd_info (sec);
13038 if (opd != NULL && opd->adjust != NULL)
13040 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13045 /* If this is a relocation against the opd section sym
13046 and we have edited .opd, adjust the reloc addend so
13047 that ld -r and ld --emit-relocs output is correct.
13048 If it is a reloc against some other .opd symbol,
13049 then the symbol value will be adjusted later. */
13050 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13051 rel->r_addend += adjust;
13053 relocation += adjust;
13059 bfd_boolean ignored;
13061 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13062 r_symndx, symtab_hdr, sym_hashes,
13063 h_elf, sec, relocation,
13064 unresolved_reloc, warned, ignored);
13065 sym_name = h_elf->root.root.string;
13066 sym_type = h_elf->type;
13068 && sec->owner == output_bfd
13069 && strcmp (sec->name, ".opd") == 0)
13071 /* This is a symbol defined in a linker script. All
13072 such are defined in output sections, even those
13073 defined by simple assignment from a symbol defined in
13074 an input section. Transfer the symbol to an
13075 appropriate input .opd section, so that a branch to
13076 this symbol will be mapped to the location specified
13077 by the opd entry. */
13078 struct bfd_link_order *lo;
13079 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13080 if (lo->type == bfd_indirect_link_order)
13082 asection *isec = lo->u.indirect.section;
13083 if (h_elf->root.u.def.value >= isec->output_offset
13084 && h_elf->root.u.def.value < (isec->output_offset
13087 h_elf->root.u.def.value -= isec->output_offset;
13088 h_elf->root.u.def.section = isec;
13095 h = (struct ppc_link_hash_entry *) h_elf;
13097 if (sec != NULL && discarded_section (sec))
13098 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13100 ppc64_elf_howto_table[r_type], 0,
13103 if (info->relocatable)
13106 if (h != NULL && &h->elf == htab->elf.hgot)
13108 relocation = (TOCstart
13109 + htab->stub_group[input_section->id].toc_off);
13110 sec = bfd_abs_section_ptr;
13111 unresolved_reloc = FALSE;
13114 /* TLS optimizations. Replace instruction sequences and relocs
13115 based on information we collected in tls_optimize. We edit
13116 RELOCS so that --emit-relocs will output something sensible
13117 for the final instruction stream. */
13122 tls_mask = h->tls_mask;
13123 else if (local_got_ents != NULL)
13125 struct plt_entry **local_plt = (struct plt_entry **)
13126 (local_got_ents + symtab_hdr->sh_info);
13127 unsigned char *lgot_masks = (unsigned char *)
13128 (local_plt + symtab_hdr->sh_info);
13129 tls_mask = lgot_masks[r_symndx];
13132 && (r_type == R_PPC64_TLS
13133 || r_type == R_PPC64_TLSGD
13134 || r_type == R_PPC64_TLSLD))
13136 /* Check for toc tls entries. */
13137 unsigned char *toc_tls;
13139 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13140 &local_syms, rel, input_bfd))
13144 tls_mask = *toc_tls;
13147 /* Check that tls relocs are used with tls syms, and non-tls
13148 relocs are used with non-tls syms. */
13149 if (r_symndx != STN_UNDEF
13150 && r_type != R_PPC64_NONE
13152 || h->elf.root.type == bfd_link_hash_defined
13153 || h->elf.root.type == bfd_link_hash_defweak)
13154 && (IS_PPC64_TLS_RELOC (r_type)
13155 != (sym_type == STT_TLS
13156 || (sym_type == STT_SECTION
13157 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13160 && (r_type == R_PPC64_TLS
13161 || r_type == R_PPC64_TLSGD
13162 || r_type == R_PPC64_TLSLD))
13163 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13166 info->callbacks->einfo
13167 (!IS_PPC64_TLS_RELOC (r_type)
13168 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13169 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13170 input_bfd, input_section, rel->r_offset,
13171 ppc64_elf_howto_table[r_type]->name,
13175 /* Ensure reloc mapping code below stays sane. */
13176 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13177 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13178 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13179 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13180 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13181 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13182 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13183 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13184 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13185 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13193 case R_PPC64_LO_DS_OPT:
13194 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13195 if ((insn & (0x3f << 26)) != 58u << 26)
13197 insn += (14u << 26) - (58u << 26);
13198 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13199 r_type = R_PPC64_TOC16_LO;
13200 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13203 case R_PPC64_TOC16:
13204 case R_PPC64_TOC16_LO:
13205 case R_PPC64_TOC16_DS:
13206 case R_PPC64_TOC16_LO_DS:
13208 /* Check for toc tls entries. */
13209 unsigned char *toc_tls;
13212 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13213 &local_syms, rel, input_bfd);
13219 tls_mask = *toc_tls;
13220 if (r_type == R_PPC64_TOC16_DS
13221 || r_type == R_PPC64_TOC16_LO_DS)
13224 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13229 /* If we found a GD reloc pair, then we might be
13230 doing a GD->IE transition. */
13233 tls_gd = TLS_TPRELGD;
13234 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13237 else if (retval == 3)
13239 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13247 case R_PPC64_GOT_TPREL16_HI:
13248 case R_PPC64_GOT_TPREL16_HA:
13250 && (tls_mask & TLS_TPREL) == 0)
13252 rel->r_offset -= d_offset;
13253 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13254 r_type = R_PPC64_NONE;
13255 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13259 case R_PPC64_GOT_TPREL16_DS:
13260 case R_PPC64_GOT_TPREL16_LO_DS:
13262 && (tls_mask & TLS_TPREL) == 0)
13265 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13267 insn |= 0x3c0d0000; /* addis 0,13,0 */
13268 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13269 r_type = R_PPC64_TPREL16_HA;
13270 if (toc_symndx != 0)
13272 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13273 rel->r_addend = toc_addend;
13274 /* We changed the symbol. Start over in order to
13275 get h, sym, sec etc. right. */
13280 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13286 && (tls_mask & TLS_TPREL) == 0)
13288 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13289 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13292 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13293 /* Was PPC64_TLS which sits on insn boundary, now
13294 PPC64_TPREL16_LO which is at low-order half-word. */
13295 rel->r_offset += d_offset;
13296 r_type = R_PPC64_TPREL16_LO;
13297 if (toc_symndx != 0)
13299 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13300 rel->r_addend = toc_addend;
13301 /* We changed the symbol. Start over in order to
13302 get h, sym, sec etc. right. */
13307 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13311 case R_PPC64_GOT_TLSGD16_HI:
13312 case R_PPC64_GOT_TLSGD16_HA:
13313 tls_gd = TLS_TPRELGD;
13314 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13318 case R_PPC64_GOT_TLSLD16_HI:
13319 case R_PPC64_GOT_TLSLD16_HA:
13320 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13323 if ((tls_mask & tls_gd) != 0)
13324 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13325 + R_PPC64_GOT_TPREL16_DS);
13328 rel->r_offset -= d_offset;
13329 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13330 r_type = R_PPC64_NONE;
13332 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13336 case R_PPC64_GOT_TLSGD16:
13337 case R_PPC64_GOT_TLSGD16_LO:
13338 tls_gd = TLS_TPRELGD;
13339 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13343 case R_PPC64_GOT_TLSLD16:
13344 case R_PPC64_GOT_TLSLD16_LO:
13345 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13347 unsigned int insn1, insn2, insn3;
13351 offset = (bfd_vma) -1;
13352 /* If not using the newer R_PPC64_TLSGD/LD to mark
13353 __tls_get_addr calls, we must trust that the call
13354 stays with its arg setup insns, ie. that the next
13355 reloc is the __tls_get_addr call associated with
13356 the current reloc. Edit both insns. */
13357 if (input_section->has_tls_get_addr_call
13358 && rel + 1 < relend
13359 && branch_reloc_hash_match (input_bfd, rel + 1,
13360 htab->tls_get_addr,
13361 htab->tls_get_addr_fd))
13362 offset = rel[1].r_offset;
13363 if ((tls_mask & tls_gd) != 0)
13366 insn1 = bfd_get_32 (output_bfd,
13367 contents + rel->r_offset - d_offset);
13368 insn1 &= (1 << 26) - (1 << 2);
13369 insn1 |= 58 << 26; /* ld */
13370 insn2 = 0x7c636a14; /* add 3,3,13 */
13371 if (offset != (bfd_vma) -1)
13372 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13373 if ((tls_mask & TLS_EXPLICIT) == 0)
13374 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13375 + R_PPC64_GOT_TPREL16_DS);
13377 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13378 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13383 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13384 insn2 = 0x38630000; /* addi 3,3,0 */
13387 /* Was an LD reloc. */
13389 sec = local_sections[toc_symndx];
13391 r_symndx < symtab_hdr->sh_info;
13393 if (local_sections[r_symndx] == sec)
13395 if (r_symndx >= symtab_hdr->sh_info)
13396 r_symndx = STN_UNDEF;
13397 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13398 if (r_symndx != STN_UNDEF)
13399 rel->r_addend -= (local_syms[r_symndx].st_value
13400 + sec->output_offset
13401 + sec->output_section->vma);
13403 else if (toc_symndx != 0)
13405 r_symndx = toc_symndx;
13406 rel->r_addend = toc_addend;
13408 r_type = R_PPC64_TPREL16_HA;
13409 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13410 if (offset != (bfd_vma) -1)
13412 rel[1].r_info = ELF64_R_INFO (r_symndx,
13413 R_PPC64_TPREL16_LO);
13414 rel[1].r_offset = offset + d_offset;
13415 rel[1].r_addend = rel->r_addend;
13418 bfd_put_32 (output_bfd, insn1,
13419 contents + rel->r_offset - d_offset);
13420 if (offset != (bfd_vma) -1)
13422 insn3 = bfd_get_32 (output_bfd,
13423 contents + offset + 4);
13425 || insn3 == CROR_151515 || insn3 == CROR_313131)
13427 rel[1].r_offset += 4;
13428 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13431 bfd_put_32 (output_bfd, insn2, contents + offset);
13433 if ((tls_mask & tls_gd) == 0
13434 && (tls_gd == 0 || toc_symndx != 0))
13436 /* We changed the symbol. Start over in order
13437 to get h, sym, sec etc. right. */
13444 case R_PPC64_TLSGD:
13445 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13447 unsigned int insn2, insn3;
13448 bfd_vma offset = rel->r_offset;
13450 if ((tls_mask & TLS_TPRELGD) != 0)
13453 r_type = R_PPC64_NONE;
13454 insn2 = 0x7c636a14; /* add 3,3,13 */
13459 if (toc_symndx != 0)
13461 r_symndx = toc_symndx;
13462 rel->r_addend = toc_addend;
13464 r_type = R_PPC64_TPREL16_LO;
13465 rel->r_offset = offset + d_offset;
13466 insn2 = 0x38630000; /* addi 3,3,0 */
13468 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13469 /* Zap the reloc on the _tls_get_addr call too. */
13470 BFD_ASSERT (offset == rel[1].r_offset);
13471 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13472 insn3 = bfd_get_32 (output_bfd,
13473 contents + offset + 4);
13475 || insn3 == CROR_151515 || insn3 == CROR_313131)
13477 rel->r_offset += 4;
13478 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13481 bfd_put_32 (output_bfd, insn2, contents + offset);
13482 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13490 case R_PPC64_TLSLD:
13491 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13493 unsigned int insn2, insn3;
13494 bfd_vma offset = rel->r_offset;
13497 sec = local_sections[toc_symndx];
13499 r_symndx < symtab_hdr->sh_info;
13501 if (local_sections[r_symndx] == sec)
13503 if (r_symndx >= symtab_hdr->sh_info)
13504 r_symndx = STN_UNDEF;
13505 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13506 if (r_symndx != STN_UNDEF)
13507 rel->r_addend -= (local_syms[r_symndx].st_value
13508 + sec->output_offset
13509 + sec->output_section->vma);
13511 r_type = R_PPC64_TPREL16_LO;
13512 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13513 rel->r_offset = offset + d_offset;
13514 /* Zap the reloc on the _tls_get_addr call too. */
13515 BFD_ASSERT (offset == rel[1].r_offset);
13516 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13517 insn2 = 0x38630000; /* addi 3,3,0 */
13518 insn3 = bfd_get_32 (output_bfd,
13519 contents + offset + 4);
13521 || insn3 == CROR_151515 || insn3 == CROR_313131)
13523 rel->r_offset += 4;
13524 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13527 bfd_put_32 (output_bfd, insn2, contents + offset);
13533 case R_PPC64_DTPMOD64:
13534 if (rel + 1 < relend
13535 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13536 && rel[1].r_offset == rel->r_offset + 8)
13538 if ((tls_mask & TLS_GD) == 0)
13540 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13541 if ((tls_mask & TLS_TPRELGD) != 0)
13542 r_type = R_PPC64_TPREL64;
13545 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13546 r_type = R_PPC64_NONE;
13548 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13553 if ((tls_mask & TLS_LD) == 0)
13555 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13556 r_type = R_PPC64_NONE;
13557 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13562 case R_PPC64_TPREL64:
13563 if ((tls_mask & TLS_TPREL) == 0)
13565 r_type = R_PPC64_NONE;
13566 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13570 case R_PPC64_REL16_HA:
13571 /* If we are generating a non-PIC executable, edit
13572 . 0: addis 2,12,.TOC.-0b@ha
13573 . addi 2,2,.TOC.-0b@l
13574 used by ELFv2 global entry points to set up r2, to
13577 if .TOC. is in range. */
13579 && !info->traditional_format
13580 && h != NULL && &h->elf == htab->elf.hgot
13581 && rel + 1 < relend
13582 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13583 && rel[1].r_offset == rel->r_offset + 4
13584 && rel[1].r_addend == rel->r_addend + 4
13585 && relocation + 0x80008000 <= 0xffffffff)
13587 unsigned int insn1, insn2;
13588 bfd_vma offset = rel->r_offset - d_offset;
13589 insn1 = bfd_get_32 (output_bfd, contents + offset);
13590 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13591 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13592 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13594 r_type = R_PPC64_ADDR16_HA;
13595 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13596 rel->r_addend -= d_offset;
13597 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13598 rel[1].r_addend -= d_offset + 4;
13599 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13605 /* Handle other relocations that tweak non-addend part of insn. */
13607 max_br_offset = 1 << 25;
13608 addend = rel->r_addend;
13609 reloc_dest = DEST_NORMAL;
13615 case R_PPC64_TOCSAVE:
13616 if (relocation + addend == (rel->r_offset
13617 + input_section->output_offset
13618 + input_section->output_section->vma)
13619 && tocsave_find (htab, NO_INSERT,
13620 &local_syms, rel, input_bfd))
13622 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13624 || insn == CROR_151515 || insn == CROR_313131)
13625 bfd_put_32 (input_bfd,
13626 STD_R2_0R1 + STK_TOC (htab),
13627 contents + rel->r_offset);
13631 /* Branch taken prediction relocations. */
13632 case R_PPC64_ADDR14_BRTAKEN:
13633 case R_PPC64_REL14_BRTAKEN:
13634 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13637 /* Branch not taken prediction relocations. */
13638 case R_PPC64_ADDR14_BRNTAKEN:
13639 case R_PPC64_REL14_BRNTAKEN:
13640 insn |= bfd_get_32 (output_bfd,
13641 contents + rel->r_offset) & ~(0x01 << 21);
13644 case R_PPC64_REL14:
13645 max_br_offset = 1 << 15;
13648 case R_PPC64_REL24:
13649 /* Calls to functions with a different TOC, such as calls to
13650 shared objects, need to alter the TOC pointer. This is
13651 done using a linkage stub. A REL24 branching to these
13652 linkage stubs needs to be followed by a nop, as the nop
13653 will be replaced with an instruction to restore the TOC
13658 && h->oh->is_func_descriptor)
13659 fdh = ppc_follow_link (h->oh);
13660 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13662 if (stub_entry != NULL
13663 && (stub_entry->stub_type == ppc_stub_plt_call
13664 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13665 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13666 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13668 bfd_boolean can_plt_call = FALSE;
13670 /* All of these stubs will modify r2, so there must be a
13671 branch and link followed by a nop. The nop is
13672 replaced by an insn to restore r2. */
13673 if (rel->r_offset + 8 <= input_section->size)
13677 br = bfd_get_32 (input_bfd,
13678 contents + rel->r_offset);
13683 nop = bfd_get_32 (input_bfd,
13684 contents + rel->r_offset + 4);
13686 || nop == CROR_151515 || nop == CROR_313131)
13689 && (h == htab->tls_get_addr_fd
13690 || h == htab->tls_get_addr)
13691 && !htab->params->no_tls_get_addr_opt)
13693 /* Special stub used, leave nop alone. */
13696 bfd_put_32 (input_bfd,
13697 LD_R2_0R1 + STK_TOC (htab),
13698 contents + rel->r_offset + 4);
13699 can_plt_call = TRUE;
13704 if (!can_plt_call && h != NULL)
13706 const char *name = h->elf.root.root.string;
13711 if (strncmp (name, "__libc_start_main", 17) == 0
13712 && (name[17] == 0 || name[17] == '@'))
13714 /* Allow crt1 branch to go via a toc adjusting
13715 stub. Other calls that never return could do
13716 the same, if we could detect such. */
13717 can_plt_call = TRUE;
13723 /* g++ as of 20130507 emits self-calls without a
13724 following nop. This is arguably wrong since we
13725 have conflicting information. On the one hand a
13726 global symbol and on the other a local call
13727 sequence, but don't error for this special case.
13728 It isn't possible to cheaply verify we have
13729 exactly such a call. Allow all calls to the same
13731 asection *code_sec = sec;
13733 if (get_opd_info (sec) != NULL)
13735 bfd_vma off = (relocation + addend
13736 - sec->output_section->vma
13737 - sec->output_offset);
13739 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13741 if (code_sec == input_section)
13742 can_plt_call = TRUE;
13747 info->callbacks->einfo
13748 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13749 "recompile with -fPIC\n"),
13750 input_bfd, input_section, rel->r_offset, sym_name);
13752 bfd_set_error (bfd_error_bad_value);
13757 && (stub_entry->stub_type == ppc_stub_plt_call
13758 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13759 unresolved_reloc = FALSE;
13762 if ((stub_entry == NULL
13763 || stub_entry->stub_type == ppc_stub_long_branch
13764 || stub_entry->stub_type == ppc_stub_plt_branch)
13765 && get_opd_info (sec) != NULL)
13767 /* The branch destination is the value of the opd entry. */
13768 bfd_vma off = (relocation + addend
13769 - sec->output_section->vma
13770 - sec->output_offset);
13771 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13772 if (dest != (bfd_vma) -1)
13776 reloc_dest = DEST_OPD;
13780 /* If the branch is out of reach we ought to have a long
13782 from = (rel->r_offset
13783 + input_section->output_offset
13784 + input_section->output_section->vma);
13786 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13790 if (stub_entry != NULL
13791 && (stub_entry->stub_type == ppc_stub_long_branch
13792 || stub_entry->stub_type == ppc_stub_plt_branch)
13793 && (r_type == R_PPC64_ADDR14_BRTAKEN
13794 || r_type == R_PPC64_ADDR14_BRNTAKEN
13795 || (relocation + addend - from + max_br_offset
13796 < 2 * max_br_offset)))
13797 /* Don't use the stub if this branch is in range. */
13800 if (stub_entry != NULL)
13802 /* Munge up the value and addend so that we call the stub
13803 rather than the procedure directly. */
13804 relocation = (stub_entry->stub_offset
13805 + stub_entry->stub_sec->output_offset
13806 + stub_entry->stub_sec->output_section->vma);
13808 reloc_dest = DEST_STUB;
13810 if ((stub_entry->stub_type == ppc_stub_plt_call
13811 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13812 && (ALWAYS_EMIT_R2SAVE
13813 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13814 && rel + 1 < relend
13815 && rel[1].r_offset == rel->r_offset + 4
13816 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13824 /* Set 'a' bit. This is 0b00010 in BO field for branch
13825 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13826 for branch on CTR insns (BO == 1a00t or 1a01t). */
13827 if ((insn & (0x14 << 21)) == (0x04 << 21))
13828 insn |= 0x02 << 21;
13829 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13830 insn |= 0x08 << 21;
13836 /* Invert 'y' bit if not the default. */
13837 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13838 insn ^= 0x01 << 21;
13841 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13844 /* NOP out calls to undefined weak functions.
13845 We can thus call a weak function without first
13846 checking whether the function is defined. */
13848 && h->elf.root.type == bfd_link_hash_undefweak
13849 && h->elf.dynindx == -1
13850 && r_type == R_PPC64_REL24
13854 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13860 /* Set `addend'. */
13865 info->callbacks->einfo
13866 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13867 input_bfd, (int) r_type, sym_name);
13869 bfd_set_error (bfd_error_bad_value);
13875 case R_PPC64_TLSGD:
13876 case R_PPC64_TLSLD:
13877 case R_PPC64_TOCSAVE:
13878 case R_PPC64_GNU_VTINHERIT:
13879 case R_PPC64_GNU_VTENTRY:
13882 /* GOT16 relocations. Like an ADDR16 using the symbol's
13883 address in the GOT as relocation value instead of the
13884 symbol's value itself. Also, create a GOT entry for the
13885 symbol and put the symbol value there. */
13886 case R_PPC64_GOT_TLSGD16:
13887 case R_PPC64_GOT_TLSGD16_LO:
13888 case R_PPC64_GOT_TLSGD16_HI:
13889 case R_PPC64_GOT_TLSGD16_HA:
13890 tls_type = TLS_TLS | TLS_GD;
13893 case R_PPC64_GOT_TLSLD16:
13894 case R_PPC64_GOT_TLSLD16_LO:
13895 case R_PPC64_GOT_TLSLD16_HI:
13896 case R_PPC64_GOT_TLSLD16_HA:
13897 tls_type = TLS_TLS | TLS_LD;
13900 case R_PPC64_GOT_TPREL16_DS:
13901 case R_PPC64_GOT_TPREL16_LO_DS:
13902 case R_PPC64_GOT_TPREL16_HI:
13903 case R_PPC64_GOT_TPREL16_HA:
13904 tls_type = TLS_TLS | TLS_TPREL;
13907 case R_PPC64_GOT_DTPREL16_DS:
13908 case R_PPC64_GOT_DTPREL16_LO_DS:
13909 case R_PPC64_GOT_DTPREL16_HI:
13910 case R_PPC64_GOT_DTPREL16_HA:
13911 tls_type = TLS_TLS | TLS_DTPREL;
13914 case R_PPC64_GOT16:
13915 case R_PPC64_GOT16_LO:
13916 case R_PPC64_GOT16_HI:
13917 case R_PPC64_GOT16_HA:
13918 case R_PPC64_GOT16_DS:
13919 case R_PPC64_GOT16_LO_DS:
13922 /* Relocation is to the entry for this symbol in the global
13927 unsigned long indx = 0;
13928 struct got_entry *ent;
13930 if (tls_type == (TLS_TLS | TLS_LD)
13932 || !h->elf.def_dynamic))
13933 ent = ppc64_tlsld_got (input_bfd);
13939 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13940 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13943 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13944 /* This is actually a static link, or it is a
13945 -Bsymbolic link and the symbol is defined
13946 locally, or the symbol was forced to be local
13947 because of a version file. */
13951 BFD_ASSERT (h->elf.dynindx != -1);
13952 indx = h->elf.dynindx;
13953 unresolved_reloc = FALSE;
13955 ent = h->elf.got.glist;
13959 if (local_got_ents == NULL)
13961 ent = local_got_ents[r_symndx];
13964 for (; ent != NULL; ent = ent->next)
13965 if (ent->addend == orig_rel.r_addend
13966 && ent->owner == input_bfd
13967 && ent->tls_type == tls_type)
13973 if (ent->is_indirect)
13974 ent = ent->got.ent;
13975 offp = &ent->got.offset;
13976 got = ppc64_elf_tdata (ent->owner)->got;
13980 /* The offset must always be a multiple of 8. We use the
13981 least significant bit to record whether we have already
13982 processed this entry. */
13984 if ((off & 1) != 0)
13988 /* Generate relocs for the dynamic linker, except in
13989 the case of TLSLD where we'll use one entry per
13997 ? h->elf.type == STT_GNU_IFUNC
13998 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14000 relgot = htab->elf.irelplt;
14001 else if ((info->shared || indx != 0)
14003 || (tls_type == (TLS_TLS | TLS_LD)
14004 && !h->elf.def_dynamic)
14005 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14006 || h->elf.root.type != bfd_link_hash_undefweak))
14007 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14008 if (relgot != NULL)
14010 outrel.r_offset = (got->output_section->vma
14011 + got->output_offset
14013 outrel.r_addend = addend;
14014 if (tls_type & (TLS_LD | TLS_GD))
14016 outrel.r_addend = 0;
14017 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14018 if (tls_type == (TLS_TLS | TLS_GD))
14020 loc = relgot->contents;
14021 loc += (relgot->reloc_count++
14022 * sizeof (Elf64_External_Rela));
14023 bfd_elf64_swap_reloca_out (output_bfd,
14025 outrel.r_offset += 8;
14026 outrel.r_addend = addend;
14028 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14031 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14032 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14033 else if (tls_type == (TLS_TLS | TLS_TPREL))
14034 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14035 else if (indx != 0)
14036 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14040 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14042 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14044 /* Write the .got section contents for the sake
14046 loc = got->contents + off;
14047 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14051 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14053 outrel.r_addend += relocation;
14054 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14055 outrel.r_addend -= htab->elf.tls_sec->vma;
14057 loc = relgot->contents;
14058 loc += (relgot->reloc_count++
14059 * sizeof (Elf64_External_Rela));
14060 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14063 /* Init the .got section contents here if we're not
14064 emitting a reloc. */
14067 relocation += addend;
14068 if (tls_type == (TLS_TLS | TLS_LD))
14070 else if (tls_type != 0)
14072 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14073 if (tls_type == (TLS_TLS | TLS_TPREL))
14074 relocation += DTP_OFFSET - TP_OFFSET;
14076 if (tls_type == (TLS_TLS | TLS_GD))
14078 bfd_put_64 (output_bfd, relocation,
14079 got->contents + off + 8);
14084 bfd_put_64 (output_bfd, relocation,
14085 got->contents + off);
14089 if (off >= (bfd_vma) -2)
14092 relocation = got->output_section->vma + got->output_offset + off;
14093 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14097 case R_PPC64_PLT16_HA:
14098 case R_PPC64_PLT16_HI:
14099 case R_PPC64_PLT16_LO:
14100 case R_PPC64_PLT32:
14101 case R_PPC64_PLT64:
14102 /* Relocation is to the entry for this symbol in the
14103 procedure linkage table. */
14105 /* Resolve a PLT reloc against a local symbol directly,
14106 without using the procedure linkage table. */
14110 /* It's possible that we didn't make a PLT entry for this
14111 symbol. This happens when statically linking PIC code,
14112 or when using -Bsymbolic. Go find a match if there is a
14114 if (htab->elf.splt != NULL)
14116 struct plt_entry *ent;
14117 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14118 if (ent->plt.offset != (bfd_vma) -1
14119 && ent->addend == orig_rel.r_addend)
14121 relocation = (htab->elf.splt->output_section->vma
14122 + htab->elf.splt->output_offset
14123 + ent->plt.offset);
14124 unresolved_reloc = FALSE;
14131 /* Relocation value is TOC base. */
14132 relocation = TOCstart;
14133 if (r_symndx == STN_UNDEF)
14134 relocation += htab->stub_group[input_section->id].toc_off;
14135 else if (unresolved_reloc)
14137 else if (sec != NULL && sec->id <= htab->top_id)
14138 relocation += htab->stub_group[sec->id].toc_off;
14140 unresolved_reloc = TRUE;
14143 /* TOC16 relocs. We want the offset relative to the TOC base,
14144 which is the address of the start of the TOC plus 0x8000.
14145 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14147 case R_PPC64_TOC16:
14148 case R_PPC64_TOC16_LO:
14149 case R_PPC64_TOC16_HI:
14150 case R_PPC64_TOC16_DS:
14151 case R_PPC64_TOC16_LO_DS:
14152 case R_PPC64_TOC16_HA:
14153 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14156 /* Relocate against the beginning of the section. */
14157 case R_PPC64_SECTOFF:
14158 case R_PPC64_SECTOFF_LO:
14159 case R_PPC64_SECTOFF_HI:
14160 case R_PPC64_SECTOFF_DS:
14161 case R_PPC64_SECTOFF_LO_DS:
14162 case R_PPC64_SECTOFF_HA:
14164 addend -= sec->output_section->vma;
14167 case R_PPC64_REL16:
14168 case R_PPC64_REL16_LO:
14169 case R_PPC64_REL16_HI:
14170 case R_PPC64_REL16_HA:
14173 case R_PPC64_REL14:
14174 case R_PPC64_REL14_BRNTAKEN:
14175 case R_PPC64_REL14_BRTAKEN:
14176 case R_PPC64_REL24:
14179 case R_PPC64_TPREL16:
14180 case R_PPC64_TPREL16_LO:
14181 case R_PPC64_TPREL16_HI:
14182 case R_PPC64_TPREL16_HA:
14183 case R_PPC64_TPREL16_DS:
14184 case R_PPC64_TPREL16_LO_DS:
14185 case R_PPC64_TPREL16_HIGH:
14186 case R_PPC64_TPREL16_HIGHA:
14187 case R_PPC64_TPREL16_HIGHER:
14188 case R_PPC64_TPREL16_HIGHERA:
14189 case R_PPC64_TPREL16_HIGHEST:
14190 case R_PPC64_TPREL16_HIGHESTA:
14192 && h->elf.root.type == bfd_link_hash_undefweak
14193 && h->elf.dynindx == -1)
14195 /* Make this relocation against an undefined weak symbol
14196 resolve to zero. This is really just a tweak, since
14197 code using weak externs ought to check that they are
14198 defined before using them. */
14199 bfd_byte *p = contents + rel->r_offset - d_offset;
14201 insn = bfd_get_32 (output_bfd, p);
14202 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14204 bfd_put_32 (output_bfd, insn, p);
14207 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14209 /* The TPREL16 relocs shouldn't really be used in shared
14210 libs as they will result in DT_TEXTREL being set, but
14211 support them anyway. */
14215 case R_PPC64_DTPREL16:
14216 case R_PPC64_DTPREL16_LO:
14217 case R_PPC64_DTPREL16_HI:
14218 case R_PPC64_DTPREL16_HA:
14219 case R_PPC64_DTPREL16_DS:
14220 case R_PPC64_DTPREL16_LO_DS:
14221 case R_PPC64_DTPREL16_HIGH:
14222 case R_PPC64_DTPREL16_HIGHA:
14223 case R_PPC64_DTPREL16_HIGHER:
14224 case R_PPC64_DTPREL16_HIGHERA:
14225 case R_PPC64_DTPREL16_HIGHEST:
14226 case R_PPC64_DTPREL16_HIGHESTA:
14227 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14230 case R_PPC64_ADDR64_LOCAL:
14231 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14236 case R_PPC64_DTPMOD64:
14241 case R_PPC64_TPREL64:
14242 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14245 case R_PPC64_DTPREL64:
14246 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14249 /* Relocations that may need to be propagated if this is a
14251 case R_PPC64_REL30:
14252 case R_PPC64_REL32:
14253 case R_PPC64_REL64:
14254 case R_PPC64_ADDR14:
14255 case R_PPC64_ADDR14_BRNTAKEN:
14256 case R_PPC64_ADDR14_BRTAKEN:
14257 case R_PPC64_ADDR16:
14258 case R_PPC64_ADDR16_DS:
14259 case R_PPC64_ADDR16_HA:
14260 case R_PPC64_ADDR16_HI:
14261 case R_PPC64_ADDR16_HIGH:
14262 case R_PPC64_ADDR16_HIGHA:
14263 case R_PPC64_ADDR16_HIGHER:
14264 case R_PPC64_ADDR16_HIGHERA:
14265 case R_PPC64_ADDR16_HIGHEST:
14266 case R_PPC64_ADDR16_HIGHESTA:
14267 case R_PPC64_ADDR16_LO:
14268 case R_PPC64_ADDR16_LO_DS:
14269 case R_PPC64_ADDR24:
14270 case R_PPC64_ADDR32:
14271 case R_PPC64_ADDR64:
14272 case R_PPC64_UADDR16:
14273 case R_PPC64_UADDR32:
14274 case R_PPC64_UADDR64:
14276 if ((input_section->flags & SEC_ALLOC) == 0)
14279 if (NO_OPD_RELOCS && is_opd)
14284 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14285 || h->elf.root.type != bfd_link_hash_undefweak)
14286 && (must_be_dyn_reloc (info, r_type)
14287 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14288 || (ELIMINATE_COPY_RELOCS
14291 && h->elf.dynindx != -1
14292 && !h->elf.non_got_ref
14293 && !h->elf.def_regular)
14296 ? h->elf.type == STT_GNU_IFUNC
14297 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14299 bfd_boolean skip, relocate;
14303 /* When generating a dynamic object, these relocations
14304 are copied into the output file to be resolved at run
14310 out_off = _bfd_elf_section_offset (output_bfd, info,
14311 input_section, rel->r_offset);
14312 if (out_off == (bfd_vma) -1)
14314 else if (out_off == (bfd_vma) -2)
14315 skip = TRUE, relocate = TRUE;
14316 out_off += (input_section->output_section->vma
14317 + input_section->output_offset);
14318 outrel.r_offset = out_off;
14319 outrel.r_addend = rel->r_addend;
14321 /* Optimize unaligned reloc use. */
14322 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14323 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14324 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14325 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14326 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14327 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14328 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14329 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14330 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14333 memset (&outrel, 0, sizeof outrel);
14334 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14336 && r_type != R_PPC64_TOC)
14338 BFD_ASSERT (h->elf.dynindx != -1);
14339 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14343 /* This symbol is local, or marked to become local,
14344 or this is an opd section reloc which must point
14345 at a local function. */
14346 outrel.r_addend += relocation;
14347 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14349 if (is_opd && h != NULL)
14351 /* Lie about opd entries. This case occurs
14352 when building shared libraries and we
14353 reference a function in another shared
14354 lib. The same thing happens for a weak
14355 definition in an application that's
14356 overridden by a strong definition in a
14357 shared lib. (I believe this is a generic
14358 bug in binutils handling of weak syms.)
14359 In these cases we won't use the opd
14360 entry in this lib. */
14361 unresolved_reloc = FALSE;
14364 && r_type == R_PPC64_ADDR64
14366 ? h->elf.type == STT_GNU_IFUNC
14367 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14368 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14371 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14373 /* We need to relocate .opd contents for ld.so.
14374 Prelink also wants simple and consistent rules
14375 for relocs. This make all RELATIVE relocs have
14376 *r_offset equal to r_addend. */
14385 ? h->elf.type == STT_GNU_IFUNC
14386 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14388 info->callbacks->einfo
14389 (_("%P: %H: %s for indirect "
14390 "function `%T' unsupported\n"),
14391 input_bfd, input_section, rel->r_offset,
14392 ppc64_elf_howto_table[r_type]->name,
14396 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14398 else if (sec == NULL || sec->owner == NULL)
14400 bfd_set_error (bfd_error_bad_value);
14407 osec = sec->output_section;
14408 indx = elf_section_data (osec)->dynindx;
14412 if ((osec->flags & SEC_READONLY) == 0
14413 && htab->elf.data_index_section != NULL)
14414 osec = htab->elf.data_index_section;
14416 osec = htab->elf.text_index_section;
14417 indx = elf_section_data (osec)->dynindx;
14419 BFD_ASSERT (indx != 0);
14421 /* We are turning this relocation into one
14422 against a section symbol, so subtract out
14423 the output section's address but not the
14424 offset of the input section in the output
14426 outrel.r_addend -= osec->vma;
14429 outrel.r_info = ELF64_R_INFO (indx, r_type);
14433 sreloc = elf_section_data (input_section)->sreloc;
14435 ? h->elf.type == STT_GNU_IFUNC
14436 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14437 sreloc = htab->elf.irelplt;
14438 if (sreloc == NULL)
14441 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14444 loc = sreloc->contents;
14445 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14446 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14448 /* If this reloc is against an external symbol, it will
14449 be computed at runtime, so there's no need to do
14450 anything now. However, for the sake of prelink ensure
14451 that the section contents are a known value. */
14454 unresolved_reloc = FALSE;
14455 /* The value chosen here is quite arbitrary as ld.so
14456 ignores section contents except for the special
14457 case of .opd where the contents might be accessed
14458 before relocation. Choose zero, as that won't
14459 cause reloc overflow. */
14462 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14463 to improve backward compatibility with older
14465 if (r_type == R_PPC64_ADDR64)
14466 addend = outrel.r_addend;
14467 /* Adjust pc_relative relocs to have zero in *r_offset. */
14468 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14469 addend = (input_section->output_section->vma
14470 + input_section->output_offset
14477 case R_PPC64_GLOB_DAT:
14478 case R_PPC64_JMP_SLOT:
14479 case R_PPC64_JMP_IREL:
14480 case R_PPC64_RELATIVE:
14481 /* We shouldn't ever see these dynamic relocs in relocatable
14483 /* Fall through. */
14485 case R_PPC64_PLTGOT16:
14486 case R_PPC64_PLTGOT16_DS:
14487 case R_PPC64_PLTGOT16_HA:
14488 case R_PPC64_PLTGOT16_HI:
14489 case R_PPC64_PLTGOT16_LO:
14490 case R_PPC64_PLTGOT16_LO_DS:
14491 case R_PPC64_PLTREL32:
14492 case R_PPC64_PLTREL64:
14493 /* These ones haven't been implemented yet. */
14495 info->callbacks->einfo
14496 (_("%P: %B: %s is not supported for `%T'\n"),
14498 ppc64_elf_howto_table[r_type]->name, sym_name);
14500 bfd_set_error (bfd_error_invalid_operation);
14505 /* Multi-instruction sequences that access the TOC can be
14506 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14507 to nop; addi rb,r2,x; */
14513 case R_PPC64_GOT_TLSLD16_HI:
14514 case R_PPC64_GOT_TLSGD16_HI:
14515 case R_PPC64_GOT_TPREL16_HI:
14516 case R_PPC64_GOT_DTPREL16_HI:
14517 case R_PPC64_GOT16_HI:
14518 case R_PPC64_TOC16_HI:
14519 /* These relocs would only be useful if building up an
14520 offset to later add to r2, perhaps in an indexed
14521 addressing mode instruction. Don't try to optimize.
14522 Unfortunately, the possibility of someone building up an
14523 offset like this or even with the HA relocs, means that
14524 we need to check the high insn when optimizing the low
14528 case R_PPC64_GOT_TLSLD16_HA:
14529 case R_PPC64_GOT_TLSGD16_HA:
14530 case R_PPC64_GOT_TPREL16_HA:
14531 case R_PPC64_GOT_DTPREL16_HA:
14532 case R_PPC64_GOT16_HA:
14533 case R_PPC64_TOC16_HA:
14534 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14535 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14537 bfd_byte *p = contents + (rel->r_offset & ~3);
14538 bfd_put_32 (input_bfd, NOP, p);
14542 case R_PPC64_GOT_TLSLD16_LO:
14543 case R_PPC64_GOT_TLSGD16_LO:
14544 case R_PPC64_GOT_TPREL16_LO_DS:
14545 case R_PPC64_GOT_DTPREL16_LO_DS:
14546 case R_PPC64_GOT16_LO:
14547 case R_PPC64_GOT16_LO_DS:
14548 case R_PPC64_TOC16_LO:
14549 case R_PPC64_TOC16_LO_DS:
14550 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14551 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14553 bfd_byte *p = contents + (rel->r_offset & ~3);
14554 insn = bfd_get_32 (input_bfd, p);
14555 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14557 /* Transform addic to addi when we change reg. */
14558 insn &= ~((0x3f << 26) | (0x1f << 16));
14559 insn |= (14u << 26) | (2 << 16);
14563 insn &= ~(0x1f << 16);
14566 bfd_put_32 (input_bfd, insn, p);
14571 /* Do any further special processing. */
14572 howto = ppc64_elf_howto_table[(int) r_type];
14578 case R_PPC64_REL16_HA:
14579 case R_PPC64_ADDR16_HA:
14580 case R_PPC64_ADDR16_HIGHA:
14581 case R_PPC64_ADDR16_HIGHERA:
14582 case R_PPC64_ADDR16_HIGHESTA:
14583 case R_PPC64_TOC16_HA:
14584 case R_PPC64_SECTOFF_HA:
14585 case R_PPC64_TPREL16_HA:
14586 case R_PPC64_TPREL16_HIGHA:
14587 case R_PPC64_TPREL16_HIGHERA:
14588 case R_PPC64_TPREL16_HIGHESTA:
14589 case R_PPC64_DTPREL16_HA:
14590 case R_PPC64_DTPREL16_HIGHA:
14591 case R_PPC64_DTPREL16_HIGHERA:
14592 case R_PPC64_DTPREL16_HIGHESTA:
14593 /* It's just possible that this symbol is a weak symbol
14594 that's not actually defined anywhere. In that case,
14595 'sec' would be NULL, and we should leave the symbol
14596 alone (it will be set to zero elsewhere in the link). */
14601 case R_PPC64_GOT16_HA:
14602 case R_PPC64_PLTGOT16_HA:
14603 case R_PPC64_PLT16_HA:
14604 case R_PPC64_GOT_TLSGD16_HA:
14605 case R_PPC64_GOT_TLSLD16_HA:
14606 case R_PPC64_GOT_TPREL16_HA:
14607 case R_PPC64_GOT_DTPREL16_HA:
14608 /* Add 0x10000 if sign bit in 0:15 is set.
14609 Bits 0:15 are not used. */
14613 case R_PPC64_ADDR16_DS:
14614 case R_PPC64_ADDR16_LO_DS:
14615 case R_PPC64_GOT16_DS:
14616 case R_PPC64_GOT16_LO_DS:
14617 case R_PPC64_PLT16_LO_DS:
14618 case R_PPC64_SECTOFF_DS:
14619 case R_PPC64_SECTOFF_LO_DS:
14620 case R_PPC64_TOC16_DS:
14621 case R_PPC64_TOC16_LO_DS:
14622 case R_PPC64_PLTGOT16_DS:
14623 case R_PPC64_PLTGOT16_LO_DS:
14624 case R_PPC64_GOT_TPREL16_DS:
14625 case R_PPC64_GOT_TPREL16_LO_DS:
14626 case R_PPC64_GOT_DTPREL16_DS:
14627 case R_PPC64_GOT_DTPREL16_LO_DS:
14628 case R_PPC64_TPREL16_DS:
14629 case R_PPC64_TPREL16_LO_DS:
14630 case R_PPC64_DTPREL16_DS:
14631 case R_PPC64_DTPREL16_LO_DS:
14632 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14634 /* If this reloc is against an lq insn, then the value must be
14635 a multiple of 16. This is somewhat of a hack, but the
14636 "correct" way to do this by defining _DQ forms of all the
14637 _DS relocs bloats all reloc switches in this file. It
14638 doesn't seem to make much sense to use any of these relocs
14639 in data, so testing the insn should be safe. */
14640 if ((insn & (0x3f << 26)) == (56u << 26))
14642 if (((relocation + addend) & mask) != 0)
14644 info->callbacks->einfo
14645 (_("%P: %H: error: %s not a multiple of %u\n"),
14646 input_bfd, input_section, rel->r_offset,
14649 bfd_set_error (bfd_error_bad_value);
14656 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14657 because such sections are not SEC_ALLOC and thus ld.so will
14658 not process them. */
14659 if (unresolved_reloc
14660 && !((input_section->flags & SEC_DEBUGGING) != 0
14661 && h->elf.def_dynamic)
14662 && _bfd_elf_section_offset (output_bfd, info, input_section,
14663 rel->r_offset) != (bfd_vma) -1)
14665 info->callbacks->einfo
14666 (_("%P: %H: unresolvable %s against `%T'\n"),
14667 input_bfd, input_section, rel->r_offset,
14669 h->elf.root.root.string);
14673 /* 16-bit fields in insns mostly have signed values, but a
14674 few insns have 16-bit unsigned values. Really, we should
14675 have different reloc types. */
14676 if (howto->complain_on_overflow != complain_overflow_dont
14677 && howto->dst_mask == 0xffff
14678 && (input_section->flags & SEC_CODE) != 0)
14680 enum complain_overflow complain = complain_overflow_signed;
14682 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14683 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14684 complain = complain_overflow_bitfield;
14685 else if (howto->rightshift == 0
14686 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14687 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14688 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14689 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14690 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14691 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14692 complain = complain_overflow_unsigned;
14693 if (howto->complain_on_overflow != complain)
14695 alt_howto = *howto;
14696 alt_howto.complain_on_overflow = complain;
14697 howto = &alt_howto;
14701 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14702 rel->r_offset, relocation, addend);
14704 if (r != bfd_reloc_ok)
14706 char *more_info = NULL;
14707 const char *reloc_name = howto->name;
14709 if (reloc_dest != DEST_NORMAL)
14711 more_info = bfd_malloc (strlen (reloc_name) + 8);
14712 if (more_info != NULL)
14714 strcpy (more_info, reloc_name);
14715 strcat (more_info, (reloc_dest == DEST_OPD
14716 ? " (OPD)" : " (stub)"));
14717 reloc_name = more_info;
14721 if (r == bfd_reloc_overflow)
14726 && h->elf.root.type == bfd_link_hash_undefweak
14727 && howto->pc_relative)
14729 /* Assume this is a call protected by other code that
14730 detects the symbol is undefined. If this is the case,
14731 we can safely ignore the overflow. If not, the
14732 program is hosed anyway, and a little warning isn't
14738 if (!((*info->callbacks->reloc_overflow)
14739 (info, &h->elf.root, sym_name,
14740 reloc_name, orig_rel.r_addend,
14741 input_bfd, input_section, rel->r_offset)))
14746 info->callbacks->einfo
14747 (_("%P: %H: %s against `%T': error %d\n"),
14748 input_bfd, input_section, rel->r_offset,
14749 reloc_name, sym_name, (int) r);
14752 if (more_info != NULL)
14757 /* If we're emitting relocations, then shortly after this function
14758 returns, reloc offsets and addends for this section will be
14759 adjusted. Worse, reloc symbol indices will be for the output
14760 file rather than the input. Save a copy of the relocs for
14761 opd_entry_value. */
14762 if (is_opd && (info->emitrelocations || info->relocatable))
14765 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14766 rel = bfd_alloc (input_bfd, amt);
14767 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14768 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14771 memcpy (rel, relocs, amt);
14776 /* Adjust the value of any local symbols in opd sections. */
14779 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14780 const char *name ATTRIBUTE_UNUSED,
14781 Elf_Internal_Sym *elfsym,
14782 asection *input_sec,
14783 struct elf_link_hash_entry *h)
14785 struct _opd_sec_data *opd;
14792 opd = get_opd_info (input_sec);
14793 if (opd == NULL || opd->adjust == NULL)
14796 value = elfsym->st_value - input_sec->output_offset;
14797 if (!info->relocatable)
14798 value -= input_sec->output_section->vma;
14800 adjust = opd->adjust[value / 8];
14804 elfsym->st_value += adjust;
14808 /* Finish up dynamic symbol handling. We set the contents of various
14809 dynamic sections here. */
14812 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14813 struct bfd_link_info *info,
14814 struct elf_link_hash_entry *h,
14815 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14817 struct ppc_link_hash_table *htab;
14818 struct plt_entry *ent;
14819 Elf_Internal_Rela rela;
14822 htab = ppc_hash_table (info);
14826 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14827 if (ent->plt.offset != (bfd_vma) -1)
14829 /* This symbol has an entry in the procedure linkage
14830 table. Set it up. */
14831 if (!htab->elf.dynamic_sections_created
14832 || h->dynindx == -1)
14834 BFD_ASSERT (h->type == STT_GNU_IFUNC
14836 && (h->root.type == bfd_link_hash_defined
14837 || h->root.type == bfd_link_hash_defweak));
14838 rela.r_offset = (htab->elf.iplt->output_section->vma
14839 + htab->elf.iplt->output_offset
14840 + ent->plt.offset);
14842 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14844 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14845 rela.r_addend = (h->root.u.def.value
14846 + h->root.u.def.section->output_offset
14847 + h->root.u.def.section->output_section->vma
14849 loc = (htab->elf.irelplt->contents
14850 + (htab->elf.irelplt->reloc_count++
14851 * sizeof (Elf64_External_Rela)));
14855 rela.r_offset = (htab->elf.splt->output_section->vma
14856 + htab->elf.splt->output_offset
14857 + ent->plt.offset);
14858 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14859 rela.r_addend = ent->addend;
14860 loc = (htab->elf.srelplt->contents
14861 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14862 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14864 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14866 if (!htab->opd_abi)
14868 if (!h->def_regular)
14870 /* Mark the symbol as undefined, rather than as
14871 defined in glink. Leave the value if there were
14872 any relocations where pointer equality matters
14873 (this is a clue for the dynamic linker, to make
14874 function pointer comparisons work between an
14875 application and shared library), otherwise set it
14877 sym->st_shndx = SHN_UNDEF;
14878 if (!h->pointer_equality_needed)
14880 else if (!h->ref_regular_nonweak)
14882 /* This breaks function pointer comparisons, but
14883 that is better than breaking tests for a NULL
14884 function pointer. */
14893 /* This symbol needs a copy reloc. Set it up. */
14895 if (h->dynindx == -1
14896 || (h->root.type != bfd_link_hash_defined
14897 && h->root.type != bfd_link_hash_defweak)
14898 || htab->relbss == NULL)
14901 rela.r_offset = (h->root.u.def.value
14902 + h->root.u.def.section->output_section->vma
14903 + h->root.u.def.section->output_offset);
14904 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14906 loc = htab->relbss->contents;
14907 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14908 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14914 /* Used to decide how to sort relocs in an optimal manner for the
14915 dynamic linker, before writing them out. */
14917 static enum elf_reloc_type_class
14918 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14919 const asection *rel_sec,
14920 const Elf_Internal_Rela *rela)
14922 enum elf_ppc64_reloc_type r_type;
14923 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14925 if (rel_sec == htab->elf.irelplt)
14926 return reloc_class_ifunc;
14928 r_type = ELF64_R_TYPE (rela->r_info);
14931 case R_PPC64_RELATIVE:
14932 return reloc_class_relative;
14933 case R_PPC64_JMP_SLOT:
14934 return reloc_class_plt;
14936 return reloc_class_copy;
14938 return reloc_class_normal;
14942 /* Finish up the dynamic sections. */
14945 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14946 struct bfd_link_info *info)
14948 struct ppc_link_hash_table *htab;
14952 htab = ppc_hash_table (info);
14956 dynobj = htab->elf.dynobj;
14957 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14959 if (htab->elf.dynamic_sections_created)
14961 Elf64_External_Dyn *dyncon, *dynconend;
14963 if (sdyn == NULL || htab->elf.sgot == NULL)
14966 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14967 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14968 for (; dyncon < dynconend; dyncon++)
14970 Elf_Internal_Dyn dyn;
14973 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14980 case DT_PPC64_GLINK:
14982 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14983 /* We stupidly defined DT_PPC64_GLINK to be the start
14984 of glink rather than the first entry point, which is
14985 what ld.so needs, and now have a bigger stub to
14986 support automatic multiple TOCs. */
14987 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
14991 s = bfd_get_section_by_name (output_bfd, ".opd");
14994 dyn.d_un.d_ptr = s->vma;
14998 if (htab->do_multi_toc && htab->multi_toc_needed)
14999 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15002 case DT_PPC64_OPDSZ:
15003 s = bfd_get_section_by_name (output_bfd, ".opd");
15006 dyn.d_un.d_val = s->size;
15010 s = htab->elf.splt;
15011 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15015 s = htab->elf.srelplt;
15016 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15020 dyn.d_un.d_val = htab->elf.srelplt->size;
15024 /* Don't count procedure linkage table relocs in the
15025 overall reloc count. */
15026 s = htab->elf.srelplt;
15029 dyn.d_un.d_val -= s->size;
15033 /* We may not be using the standard ELF linker script.
15034 If .rela.plt is the first .rela section, we adjust
15035 DT_RELA to not include it. */
15036 s = htab->elf.srelplt;
15039 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15041 dyn.d_un.d_ptr += s->size;
15045 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15049 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15051 /* Fill in the first entry in the global offset table.
15052 We use it to hold the link-time TOCbase. */
15053 bfd_put_64 (output_bfd,
15054 elf_gp (output_bfd) + TOC_BASE_OFF,
15055 htab->elf.sgot->contents);
15057 /* Set .got entry size. */
15058 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15061 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15063 /* Set .plt entry size. */
15064 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15065 = PLT_ENTRY_SIZE (htab);
15068 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15069 brlt ourselves if emitrelocations. */
15070 if (htab->brlt != NULL
15071 && htab->brlt->reloc_count != 0
15072 && !_bfd_elf_link_output_relocs (output_bfd,
15074 elf_section_data (htab->brlt)->rela.hdr,
15075 elf_section_data (htab->brlt)->relocs,
15079 if (htab->glink != NULL
15080 && htab->glink->reloc_count != 0
15081 && !_bfd_elf_link_output_relocs (output_bfd,
15083 elf_section_data (htab->glink)->rela.hdr,
15084 elf_section_data (htab->glink)->relocs,
15089 if (htab->glink_eh_frame != NULL
15090 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15091 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15092 htab->glink_eh_frame,
15093 htab->glink_eh_frame->contents))
15096 /* We need to handle writing out multiple GOT sections ourselves,
15097 since we didn't add them to DYNOBJ. We know dynobj is the first
15099 while ((dynobj = dynobj->link.next) != NULL)
15103 if (!is_ppc64_elf (dynobj))
15106 s = ppc64_elf_tdata (dynobj)->got;
15109 && s->output_section != bfd_abs_section_ptr
15110 && !bfd_set_section_contents (output_bfd, s->output_section,
15111 s->contents, s->output_offset,
15114 s = ppc64_elf_tdata (dynobj)->relgot;
15117 && s->output_section != bfd_abs_section_ptr
15118 && !bfd_set_section_contents (output_bfd, s->output_section,
15119 s->contents, s->output_offset,
15127 #include "elf64-target.h"
15129 /* FreeBSD support */
15131 #undef TARGET_LITTLE_SYM
15132 #undef TARGET_LITTLE_NAME
15134 #undef TARGET_BIG_SYM
15135 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15136 #undef TARGET_BIG_NAME
15137 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15140 #define ELF_OSABI ELFOSABI_FREEBSD
15143 #define elf64_bed elf64_powerpc_fbsd_bed
15145 #include "elf64-target.h"