1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
85 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_before_check_relocs
98 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
108 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
110 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
111 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
112 #define elf_backend_action_discarded ppc64_elf_action_discarded
113 #define elf_backend_relocate_section ppc64_elf_relocate_section
114 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
117 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
118 #define elf_backend_special_sections ppc64_elf_special_sections
119 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
121 /* The name of the dynamic interpreter. This is put in the .interp
123 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
125 /* The size in bytes of an entry in the procedure linkage table. */
126 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
131 /* Offsets to some stack save slots. */
133 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
134 /* This one is dodgy. ELFv2 does not have a linker word, so use the
135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
139 /* TOC base pointers offset from start of TOC. */
140 #define TOC_BASE_OFF 0x8000
142 /* Offset of tp and dtp pointers from start of TLS block. */
143 #define TP_OFFSET 0x7000
144 #define DTP_OFFSET 0x8000
146 /* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
148 insert an addi to adjust r11. */
149 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
150 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
155 #define BCTR 0x4e800420 /* bctr */
157 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
158 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
161 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
164 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166 #define BNECTR 0x4ca20420 /* bnectr+ */
167 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
169 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
170 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
173 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
175 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
176 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
179 /* glink call stub instructions. We enter with the index in R0. */
180 #define GLINK_CALL_STUB_SIZE (16*4)
184 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
185 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
187 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
188 /* ld %2,(0b-1b)(%11) */
189 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
190 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
196 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
203 #define NOP 0x60000000
205 /* Some other nops. */
206 #define CROR_151515 0x4def7b82
207 #define CROR_313131 0x4ffffb82
209 /* .glink entries for the first 32k functions are two instructions. */
210 #define LI_R0_0 0x38000000 /* li %r0,0 */
211 #define B_DOT 0x48000000 /* b . */
213 /* After that, we need two instructions to load the index, followed by
215 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
216 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
218 /* Instructions used by the save and restore reg functions. */
219 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
223 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
225 #define LI_R12_0 0x39800000 /* li %r12,0 */
226 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
229 #define BLR 0x4e800020 /* blr */
231 /* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
234 relocate .opd without reloc entries. */
235 #ifndef NO_OPD_RELOCS
236 #define NO_OPD_RELOCS 0
240 abiversion (bfd *abfd)
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
246 set_abiversion (bfd *abfd, int ver)
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
252 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
254 /* Relocation HOWTO's. */
255 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
257 static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
261 2, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE, /* pc_relative */
265 complain_overflow_dont, /* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
268 FALSE, /* partial_inplace */
271 FALSE), /* pcrel_offset */
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
278 FALSE, /* pc_relative */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
283 FALSE, /* partial_inplace */
285 0xffffffff, /* dst_mask */
286 FALSE), /* pcrel_offset */
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE, /* pc_relative */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
299 FALSE, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 FALSE), /* pcrel_offset */
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE, /* pc_relative */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
314 FALSE, /* partial_inplace */
316 0xffff, /* dst_mask */
317 FALSE), /* pcrel_offset */
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE, /* pc_relative */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
329 FALSE, /* partial_inplace */
331 0xffff, /* dst_mask */
332 FALSE), /* pcrel_offset */
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
344 FALSE, /* partial_inplace */
346 0xffff, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE, /* pc_relative */
357 complain_overflow_signed, /* complain_on_overflow */
358 ppc64_elf_ha_reloc, /* special_function */
359 "R_PPC64_ADDR16_HA", /* name */
360 FALSE, /* partial_inplace */
362 0xffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_signed, /* complain_on_overflow */
374 ppc64_elf_branch_reloc, /* special_function */
375 "R_PPC64_ADDR14", /* name */
376 FALSE, /* partial_inplace */
378 0x0000fffc, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE, /* pc_relative */
390 complain_overflow_signed, /* complain_on_overflow */
391 ppc64_elf_brtaken_reloc, /* special_function */
392 "R_PPC64_ADDR14_BRTAKEN",/* name */
393 FALSE, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 FALSE), /* pcrel_offset */
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_signed, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc, /* special_function */
409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
410 FALSE, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
420 TRUE, /* pc_relative */
422 complain_overflow_signed, /* complain_on_overflow */
423 ppc64_elf_branch_reloc, /* special_function */
424 "R_PPC64_REL24", /* name */
425 FALSE, /* partial_inplace */
427 0x03fffffc, /* dst_mask */
428 TRUE), /* pcrel_offset */
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE, /* pc_relative */
437 complain_overflow_signed, /* complain_on_overflow */
438 ppc64_elf_branch_reloc, /* special_function */
439 "R_PPC64_REL14", /* name */
440 FALSE, /* partial_inplace */
442 0x0000fffc, /* dst_mask */
443 TRUE), /* pcrel_offset */
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE, /* pc_relative */
454 complain_overflow_signed, /* complain_on_overflow */
455 ppc64_elf_brtaken_reloc, /* special_function */
456 "R_PPC64_REL14_BRTAKEN", /* name */
457 FALSE, /* partial_inplace */
459 0x0000fffc, /* dst_mask */
460 TRUE), /* pcrel_offset */
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_signed, /* complain_on_overflow */
472 ppc64_elf_brtaken_reloc, /* special_function */
473 "R_PPC64_REL14_BRNTAKEN",/* name */
474 FALSE, /* partial_inplace */
476 0x0000fffc, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
481 HOWTO (R_PPC64_GOT16, /* type */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE, /* pc_relative */
487 complain_overflow_signed, /* complain_on_overflow */
488 ppc64_elf_unhandled_reloc, /* special_function */
489 "R_PPC64_GOT16", /* name */
490 FALSE, /* partial_inplace */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
497 HOWTO (R_PPC64_GOT16_LO, /* type */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE, /* pc_relative */
503 complain_overflow_dont, /* complain_on_overflow */
504 ppc64_elf_unhandled_reloc, /* special_function */
505 "R_PPC64_GOT16_LO", /* name */
506 FALSE, /* partial_inplace */
508 0xffff, /* dst_mask */
509 FALSE), /* pcrel_offset */
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
513 HOWTO (R_PPC64_GOT16_HI, /* type */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE, /* pc_relative */
519 complain_overflow_signed,/* complain_on_overflow */
520 ppc64_elf_unhandled_reloc, /* special_function */
521 "R_PPC64_GOT16_HI", /* name */
522 FALSE, /* partial_inplace */
524 0xffff, /* dst_mask */
525 FALSE), /* pcrel_offset */
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
529 HOWTO (R_PPC64_GOT16_HA, /* type */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE, /* pc_relative */
535 complain_overflow_signed,/* complain_on_overflow */
536 ppc64_elf_unhandled_reloc, /* special_function */
537 "R_PPC64_GOT16_HA", /* name */
538 FALSE, /* partial_inplace */
540 0xffff, /* dst_mask */
541 FALSE), /* pcrel_offset */
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
550 0, /* this one is variable size */
552 FALSE, /* pc_relative */
554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
556 "R_PPC64_COPY", /* name */
557 FALSE, /* partial_inplace */
560 FALSE), /* pcrel_offset */
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
568 FALSE, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc, /* special_function */
572 "R_PPC64_GLOB_DAT", /* name */
573 FALSE, /* partial_inplace */
575 ONES (64), /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE, /* pc_relative */
586 complain_overflow_dont, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc, /* special_function */
588 "R_PPC64_JMP_SLOT", /* name */
589 FALSE, /* partial_inplace */
592 FALSE), /* pcrel_offset */
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
597 HOWTO (R_PPC64_RELATIVE, /* type */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
601 FALSE, /* pc_relative */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
606 FALSE, /* partial_inplace */
608 ONES (64), /* dst_mask */
609 FALSE), /* pcrel_offset */
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE, /* pc_relative */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
621 FALSE, /* partial_inplace */
623 0xffffffff, /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
636 FALSE, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE, /* pc_relative */
648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
651 FALSE, /* partial_inplace */
653 0xffffffff, /* dst_mask */
654 TRUE), /* pcrel_offset */
656 /* 32-bit relocation to the symbol's procedure linkage table. */
657 HOWTO (R_PPC64_PLT32, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE, /* pc_relative */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 ppc64_elf_unhandled_reloc, /* special_function */
665 "R_PPC64_PLT32", /* name */
666 FALSE, /* partial_inplace */
668 0xffffffff, /* dst_mask */
669 FALSE), /* pcrel_offset */
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 TRUE, /* pc_relative */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
682 FALSE, /* partial_inplace */
684 0xffffffff, /* dst_mask */
685 TRUE), /* pcrel_offset */
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
689 HOWTO (R_PPC64_PLT16_LO, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_dont, /* complain_on_overflow */
696 ppc64_elf_unhandled_reloc, /* special_function */
697 "R_PPC64_PLT16_LO", /* name */
698 FALSE, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
705 HOWTO (R_PPC64_PLT16_HI, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE, /* pc_relative */
711 complain_overflow_signed, /* complain_on_overflow */
712 ppc64_elf_unhandled_reloc, /* special_function */
713 "R_PPC64_PLT16_HI", /* name */
714 FALSE, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
721 HOWTO (R_PPC64_PLT16_HA, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE, /* pc_relative */
727 complain_overflow_signed, /* complain_on_overflow */
728 ppc64_elf_unhandled_reloc, /* special_function */
729 "R_PPC64_PLT16_HA", /* name */
730 FALSE, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE), /* pcrel_offset */
735 /* 16-bit section relative relocation. */
736 HOWTO (R_PPC64_SECTOFF, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE, /* pc_relative */
742 complain_overflow_signed, /* complain_on_overflow */
743 ppc64_elf_sectoff_reloc, /* special_function */
744 "R_PPC64_SECTOFF", /* name */
745 FALSE, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE), /* pcrel_offset */
750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE, /* pc_relative */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc64_elf_sectoff_reloc, /* special_function */
759 "R_PPC64_SECTOFF_LO", /* name */
760 FALSE, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE), /* pcrel_offset */
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE, /* pc_relative */
772 complain_overflow_signed, /* complain_on_overflow */
773 ppc64_elf_sectoff_reloc, /* special_function */
774 "R_PPC64_SECTOFF_HI", /* name */
775 FALSE, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE, /* pc_relative */
787 complain_overflow_signed, /* complain_on_overflow */
788 ppc64_elf_sectoff_ha_reloc, /* special_function */
789 "R_PPC64_SECTOFF_HA", /* name */
790 FALSE, /* partial_inplace */
792 0xffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 "R_PPC64_REL30", /* name */
805 FALSE, /* partial_inplace */
807 0xfffffffc, /* dst_mask */
808 TRUE), /* pcrel_offset */
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 FALSE, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
822 FALSE, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 FALSE), /* pcrel_offset */
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE, /* pc_relative */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
837 FALSE, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE), /* pcrel_offset */
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE, /* pc_relative */
850 complain_overflow_dont, /* complain_on_overflow */
851 ppc64_elf_ha_reloc, /* special_function */
852 "R_PPC64_ADDR16_HIGHERA", /* name */
853 FALSE, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
868 FALSE, /* partial_inplace */
870 0xffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE, /* pc_relative */
881 complain_overflow_dont, /* complain_on_overflow */
882 ppc64_elf_ha_reloc, /* special_function */
883 "R_PPC64_ADDR16_HIGHESTA", /* name */
884 FALSE, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 FALSE, /* pc_relative */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
899 FALSE, /* partial_inplace */
901 ONES (64), /* dst_mask */
902 FALSE), /* pcrel_offset */
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
909 TRUE, /* pc_relative */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
914 FALSE, /* partial_inplace */
916 ONES (64), /* dst_mask */
917 TRUE), /* pcrel_offset */
919 /* 64-bit relocation to the symbol's procedure linkage table. */
920 HOWTO (R_PPC64_PLT64, /* type */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
924 FALSE, /* pc_relative */
926 complain_overflow_dont, /* complain_on_overflow */
927 ppc64_elf_unhandled_reloc, /* special_function */
928 "R_PPC64_PLT64", /* name */
929 FALSE, /* partial_inplace */
931 ONES (64), /* dst_mask */
932 FALSE), /* pcrel_offset */
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
941 TRUE, /* pc_relative */
943 complain_overflow_dont, /* complain_on_overflow */
944 ppc64_elf_unhandled_reloc, /* special_function */
945 "R_PPC64_PLTREL64", /* name */
946 FALSE, /* partial_inplace */
948 ONES (64), /* dst_mask */
949 TRUE), /* pcrel_offset */
951 /* 16 bit TOC-relative relocation. */
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_signed, /* complain_on_overflow */
961 ppc64_elf_toc_reloc, /* special_function */
962 "R_PPC64_TOC16", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 16 bit TOC-relative relocation without overflow. */
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc64_elf_toc_reloc, /* special_function */
979 "R_PPC64_TOC16_LO", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* 16 bit TOC-relative relocation, high 16 bits. */
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc64_elf_toc_reloc, /* special_function */
996 "R_PPC64_TOC16_HI", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 FALSE, /* pc_relative */
1013 complain_overflow_signed, /* complain_on_overflow */
1014 ppc64_elf_toc_ha_reloc, /* special_function */
1015 "R_PPC64_TOC16_HA", /* name */
1016 FALSE, /* partial_inplace */
1018 0xffff, /* dst_mask */
1019 FALSE), /* pcrel_offset */
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_toc64_reloc, /* special_function */
1032 "R_PPC64_TOC", /* name */
1033 FALSE, /* partial_inplace */
1035 ONES (64), /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_signed, /* complain_on_overflow */
1054 ppc64_elf_unhandled_reloc, /* special_function */
1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE, /* pc_relative */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE, /* pc_relative */
1085 complain_overflow_signed, /* complain_on_overflow */
1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 FALSE, /* pc_relative */
1103 complain_overflow_signed, /* complain_on_overflow */
1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 FALSE, /* pc_relative */
1118 complain_overflow_signed, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_signed, /* complain_on_overflow */
1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE, /* pc_relative */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE, /* pc_relative */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1278 /* Marker relocs for TLS. */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE, /* pc_relative */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1291 FALSE), /* pcrel_offset */
1293 HOWTO (R_PPC64_TLSGD,
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSLD,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1319 FALSE), /* pcrel_offset */
1321 HOWTO (R_PPC64_TOCSAVE,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE, /* pc_relative */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1333 FALSE), /* pcrel_offset */
1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE, /* pc_relative */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE, /* pc_relative */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE, /* pc_relative */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1403 FALSE, /* pc_relative */
1405 complain_overflow_signed, /* complain_on_overflow */
1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE, /* pc_relative */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE, /* pc_relative */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE, /* pc_relative */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE, /* pc_relative */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE, /* pc_relative */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE, /* pc_relative */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE, /* pc_relative */
1571 complain_overflow_signed, /* complain_on_overflow */
1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE, /* pc_relative */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
1696 FALSE, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE), /* pcrel_offset */
1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_dont, /* complain_on_overflow */
1709 ppc64_elf_unhandled_reloc, /* special_function */
1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
1711 FALSE, /* partial_inplace */
1713 0xffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1721 FALSE, /* pc_relative */
1723 complain_overflow_signed, /* complain_on_overflow */
1724 ppc64_elf_unhandled_reloc, /* special_function */
1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
1726 FALSE, /* partial_inplace */
1728 0xffff, /* dst_mask */
1729 FALSE), /* pcrel_offset */
1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1736 FALSE, /* pc_relative */
1738 complain_overflow_signed, /* complain_on_overflow */
1739 ppc64_elf_unhandled_reloc, /* special_function */
1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
1741 FALSE, /* partial_inplace */
1743 0xffff, /* dst_mask */
1744 FALSE), /* pcrel_offset */
1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE, /* pc_relative */
1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
1758 FALSE, /* partial_inplace */
1760 0xffff, /* dst_mask */
1761 FALSE), /* pcrel_offset */
1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
1773 FALSE, /* partial_inplace */
1775 0xffff, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_signed, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
1788 FALSE, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_signed, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE, /* pc_relative */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc64_elf_unhandled_reloc, /* special_function */
1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
1819 FALSE, /* partial_inplace */
1821 0xfffc, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1829 FALSE, /* pc_relative */
1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1834 FALSE, /* partial_inplace */
1836 0xfffc, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1844 FALSE, /* pc_relative */
1846 complain_overflow_signed, /* complain_on_overflow */
1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
1849 FALSE, /* partial_inplace */
1851 0xffff, /* dst_mask */
1852 FALSE), /* pcrel_offset */
1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1859 FALSE, /* pc_relative */
1861 complain_overflow_signed, /* complain_on_overflow */
1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1875 FALSE, /* pc_relative */
1877 complain_overflow_signed, /* complain_on_overflow */
1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
1880 FALSE, /* partial_inplace */
1882 0xfffc, /* dst_mask */
1883 FALSE), /* pcrel_offset */
1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1890 FALSE, /* pc_relative */
1892 complain_overflow_dont, /* complain_on_overflow */
1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1895 FALSE, /* partial_inplace */
1897 0xfffc, /* dst_mask */
1898 FALSE), /* pcrel_offset */
1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1905 FALSE, /* pc_relative */
1907 complain_overflow_signed, /* complain_on_overflow */
1908 ppc64_elf_unhandled_reloc, /* special_function */
1909 "R_PPC64_GOT_TPREL16_HI", /* name */
1910 FALSE, /* partial_inplace */
1912 0xffff, /* dst_mask */
1913 FALSE), /* pcrel_offset */
1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1920 FALSE, /* pc_relative */
1922 complain_overflow_signed, /* complain_on_overflow */
1923 ppc64_elf_unhandled_reloc, /* special_function */
1924 "R_PPC64_GOT_TPREL16_HA", /* name */
1925 FALSE, /* partial_inplace */
1927 0xffff, /* dst_mask */
1928 FALSE), /* pcrel_offset */
1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1934 FALSE, /* pc_relative */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1942 FALSE), /* pcrel_offset */
1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE, /* pc_relative */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1963 TRUE, /* pc_relative */
1965 complain_overflow_signed, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1978 TRUE, /* pc_relative */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1993 TRUE, /* pc_relative */
1995 complain_overflow_signed, /* complain_on_overflow */
1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2009 TRUE, /* pc_relative */
2011 complain_overflow_signed, /* complain_on_overflow */
2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE, /* pc_relative */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2039 FALSE, /* pc_relative */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2054 FALSE, /* pc_relative */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2069 FALSE, /* pc_relative */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2084 FALSE, /* pc_relative */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2099 FALSE, /* pc_relative */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2114 FALSE, /* pc_relative */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE, /* pc_relative */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
2134 FALSE, /* partial_inplace */
2137 FALSE), /* pcrel_offset */
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2144 FALSE, /* pc_relative */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
2149 FALSE, /* partial_inplace */
2152 FALSE), /* pcrel_offset */
2156 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2160 ppc_howto_init (void)
2162 unsigned int i, type;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2175 static reloc_howto_type *
2176 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2420 return ppc64_elf_howto_table[r];
2423 static reloc_howto_type *
2424 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2439 /* Set the howto pointer for a PowerPC ELF reloc. */
2442 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
2447 /* Initialize howto table if needed. */
2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2451 type = ELF64_R_TYPE (dst->r_info);
2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2457 type = R_PPC64_NONE;
2459 cache_ptr->howto = ppc64_elf_howto_table[type];
2462 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2464 static bfd_reloc_status_type
2465 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2472 if (output_bfd != NULL)
2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2474 input_section, output_bfd, error_message);
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2483 static bfd_reloc_status_type
2484 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2516 if (strcmp (symdef->name, symbol->name) == 0)
2518 elfsym = (elf_symbol_type *) symdef;
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2526 return bfd_reloc_continue;
2529 static bfd_reloc_status_type
2530 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
2535 enum elf_ppc64_reloc_type r_type;
2536 bfd_size_type octets;
2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2543 if (output_bfd != NULL)
2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2545 input_section, output_bfd, error_message);
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
2550 r_type = reloc_entry->howto->type;
2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
2592 static bfd_reloc_status_type
2593 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2600 if (output_bfd != NULL)
2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2602 input_section, output_bfd, error_message);
2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
2606 return bfd_reloc_continue;
2609 static bfd_reloc_status_type
2610 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2617 if (output_bfd != NULL)
2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2619 input_section, output_bfd, error_message);
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2629 static bfd_reloc_status_type
2630 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd != NULL)
2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2641 input_section, output_bfd, error_message);
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2652 static bfd_reloc_status_type
2653 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2662 if (output_bfd != NULL)
2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2664 input_section, output_bfd, error_message);
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2678 static bfd_reloc_status_type
2679 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
2684 bfd_size_type octets;
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2689 if (output_bfd != NULL)
2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2691 input_section, output_bfd, error_message);
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2702 static bfd_reloc_status_type
2703 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd != NULL)
2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2712 input_section, output_bfd, error_message);
2714 if (error_message != NULL)
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2721 return bfd_reloc_dangerous;
2724 /* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2728 struct got_entry *next;
2730 /* The symbol addend that we'll be placing in the GOT. */
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2739 Point to the BFD owning this GOT entry. */
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
2744 unsigned char tls_type;
2746 /* Non-zero if got.ent points to real entry. */
2747 unsigned char is_indirect;
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 bfd_signed_vma refcount;
2754 struct got_entry *ent;
2758 /* The same for PLT. */
2761 struct plt_entry *next;
2767 bfd_signed_vma refcount;
2772 struct ppc64_elf_obj_tdata
2774 struct elf_obj_tdata elf;
2776 /* Shortcuts to dynamic linker sections. */
2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
2784 /* TLS local dynamic got entry handling. Support for multiple GOT
2785 sections means we potentially need one of these for each input bfd. */
2786 struct got_entry tlsld_got;
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2792 /* Section contents. */
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
2798 unsigned int has_small_toc_reloc : 1;
2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
2805 #define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2808 #define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2811 #define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
2815 /* Override the generic function because we store some extras. */
2818 ppc64_elf_mkobject (bfd *abfd)
2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2824 /* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2828 ppc64_elf_object_p (bfd *abfd)
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2844 /* Support for core dump NOTE sections. */
2847 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2849 size_t offset, size;
2851 if (note->descsz != 504)
2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2866 size, note->descpos + offset);
2870 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2872 if (note->descsz != 136)
2875 elf_tdata (abfd)->core->pid
2876 = bfd_get_32 (abfd, note->descdata + 24);
2877 elf_tdata (abfd)->core->program
2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2879 elf_tdata (abfd)->core->command
2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2886 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2899 va_start (ap, note_type);
2900 memset (data, 0, sizeof (data));
2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2932 /* Add extra PPC sections. */
2934 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
2945 enum _ppc64_sec_type {
2951 struct _ppc64_elf_section_data
2953 struct bfd_elf_section_data elf;
2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2960 /* Points to the function code section for local opd entries. */
2961 asection **func_sec;
2963 /* After editing .opd, adjust references to opd local syms. */
2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2973 /* And the relocation addend. */
2978 enum _ppc64_sec_type sec_type:2;
2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch:1;
2985 #define ppc64_elf_section_data(sec) \
2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2989 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2991 if (!sec->used_by_bfd)
2993 struct _ppc64_elf_section_data *sdata;
2994 bfd_size_type amt = sizeof (*sdata);
2996 sdata = bfd_zalloc (abfd, amt);
2999 sec->used_by_bfd = sdata;
3002 return _bfd_elf_new_section_hook (abfd, sec);
3005 static struct _opd_sec_data *
3006 get_opd_info (asection * sec)
3009 && ppc64_elf_section_data (sec) != NULL
3010 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3011 return &ppc64_elf_section_data (sec)->u.opd;
3015 /* Parameters for the qsort hook. */
3016 static bfd_boolean synthetic_relocatable;
3018 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3021 compare_symbols (const void *ap, const void *bp)
3023 const asymbol *a = * (const asymbol **) ap;
3024 const asymbol *b = * (const asymbol **) bp;
3026 /* Section symbols first. */
3027 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3029 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3032 /* then .opd symbols. */
3033 if (strcmp (a->section->name, ".opd") == 0
3034 && strcmp (b->section->name, ".opd") != 0)
3036 if (strcmp (a->section->name, ".opd") != 0
3037 && strcmp (b->section->name, ".opd") == 0)
3040 /* then other code symbols. */
3041 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3042 == (SEC_CODE | SEC_ALLOC)
3043 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 != (SEC_CODE | SEC_ALLOC))
3047 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC)
3049 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 == (SEC_CODE | SEC_ALLOC))
3053 if (synthetic_relocatable)
3055 if (a->section->id < b->section->id)
3058 if (a->section->id > b->section->id)
3062 if (a->value + a->section->vma < b->value + b->section->vma)
3065 if (a->value + a->section->vma > b->value + b->section->vma)
3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3073 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3076 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3079 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3082 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3085 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3088 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3091 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3097 /* Search SYMS for a symbol of the given VALUE. */
3100 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3108 mid = (lo + hi) >> 1;
3109 if (syms[mid]->value + syms[mid]->section->vma < value)
3111 else if (syms[mid]->value + syms[mid]->section->vma > value)
3121 mid = (lo + hi) >> 1;
3122 if (syms[mid]->section->id < id)
3124 else if (syms[mid]->section->id > id)
3126 else if (syms[mid]->value < value)
3128 else if (syms[mid]->value > value)
3138 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3140 bfd_vma vma = *(bfd_vma *) ptr;
3141 return ((section->flags & SEC_ALLOC) != 0
3142 && section->vma <= vma
3143 && vma < section->vma + section->size);
3146 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3147 entry syms. Also generate @plt symbols for the glink branch table. */
3150 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3151 long static_count, asymbol **static_syms,
3152 long dyn_count, asymbol **dyn_syms,
3159 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3160 asection *opd = NULL;
3161 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3163 int abi = abiversion (abfd);
3169 opd = bfd_get_section_by_name (abfd, ".opd");
3170 if (opd == NULL && abi == 1)
3174 symcount = static_count;
3176 symcount += dyn_count;
3180 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3184 if (!relocatable && static_count != 0 && dyn_count != 0)
3186 /* Use both symbol tables. */
3187 memcpy (syms, static_syms, static_count * sizeof (*syms));
3188 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3190 else if (!relocatable && static_count == 0)
3191 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3193 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3195 synthetic_relocatable = relocatable;
3196 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3198 if (!relocatable && symcount > 1)
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3203 different values, so trim any with the same value. */
3204 for (i = 1, j = 1; i < symcount; ++i)
3205 if (syms[i - 1]->value + syms[i - 1]->section->vma
3206 != syms[i]->value + syms[i]->section->vma)
3207 syms[j++] = syms[i];
3212 if (strcmp (syms[i]->section->name, ".opd") == 0)
3216 for (; i < symcount; ++i)
3217 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3218 != (SEC_CODE | SEC_ALLOC))
3219 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3223 for (; i < symcount; ++i)
3224 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3228 for (; i < symcount; ++i)
3229 if (strcmp (syms[i]->section->name, ".opd") != 0)
3233 for (; i < symcount; ++i)
3234 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3235 != (SEC_CODE | SEC_ALLOC))
3243 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3248 if (opdsymend == secsymend)
3251 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3252 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3256 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3263 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3267 while (r < opd->relocation + relcount
3268 && r->address < syms[i]->value + opd->vma)
3271 if (r == opd->relocation + relcount)
3274 if (r->address != syms[i]->value + opd->vma)
3277 if (r->howto->type != R_PPC64_ADDR64)
3280 sym = *r->sym_ptr_ptr;
3281 if (!sym_exists_at (syms, opdsymend, symcount,
3282 sym->section->id, sym->value + r->addend))
3285 size += sizeof (asymbol);
3286 size += strlen (syms[i]->name) + 2;
3290 s = *ret = bfd_malloc (size);
3297 names = (char *) (s + count);
3299 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3303 while (r < opd->relocation + relcount
3304 && r->address < syms[i]->value + opd->vma)
3307 if (r == opd->relocation + relcount)
3310 if (r->address != syms[i]->value + opd->vma)
3313 if (r->howto->type != R_PPC64_ADDR64)
3316 sym = *r->sym_ptr_ptr;
3317 if (!sym_exists_at (syms, opdsymend, symcount,
3318 sym->section->id, sym->value + r->addend))
3323 s->flags |= BSF_SYNTHETIC;
3324 s->section = sym->section;
3325 s->value = sym->value + r->addend;
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
3340 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3341 bfd_byte *contents = NULL;
3344 bfd_vma glink_vma = 0, resolv_vma = 0;
3345 asection *dynamic, *glink = NULL, *relplt = NULL;
3348 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3350 free_contents_and_exit:
3358 for (i = secsymend; i < opdsymend; ++i)
3362 /* Ignore bogus symbols. */
3363 if (syms[i]->value > opd->size - 8)
3366 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3367 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3370 size += sizeof (asymbol);
3371 size += strlen (syms[i]->name) + 2;
3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3377 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3379 bfd_byte *dynbuf, *extdyn, *extdynend;
3381 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3383 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3384 goto free_contents_and_exit;
3386 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3387 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3390 extdynend = extdyn + dynamic->size;
3391 for (; extdyn < extdynend; extdyn += extdynsize)
3393 Elf_Internal_Dyn dyn;
3394 (*swap_dyn_in) (abfd, extdyn, &dyn);
3396 if (dyn.d_tag == DT_NULL)
3399 if (dyn.d_tag == DT_PPC64_GLINK)
3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink = bfd_sections_find_if (abfd, section_covers_vma,
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3421 unsigned int off = 0;
3423 while (bfd_get_section_contents (abfd, glink, buf,
3424 glink_vma + off - glink->vma, 4))
3426 unsigned int insn = bfd_get_32 (abfd, buf);
3428 if ((insn & ~0x3fffffc) == 0)
3430 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3439 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3441 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3444 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3445 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3446 goto free_contents_and_exit;
3448 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3449 size += plt_count * sizeof (asymbol);
3451 p = relplt->relocation;
3452 for (i = 0; i < plt_count; i++, p++)
3454 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3456 size += sizeof ("+0x") - 1 + 16;
3461 s = *ret = bfd_malloc (size);
3463 goto free_contents_and_exit;
3465 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3467 for (i = secsymend; i < opdsymend; ++i)
3471 if (syms[i]->value > opd->size - 8)
3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3479 asection *sec = abfd->sections;
3486 long mid = (lo + hi) >> 1;
3487 if (syms[mid]->section->vma < ent)
3489 else if (syms[mid]->section->vma > ent)
3493 sec = syms[mid]->section;
3498 if (lo >= hi && lo > codesecsym)
3499 sec = syms[lo - 1]->section;
3501 for (; sec != NULL; sec = sec->next)
3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3507 if ((sec->flags & SEC_ALLOC) == 0)
3509 if ((sec->flags & SEC_CODE) != 0)
3512 s->flags |= BSF_SYNTHETIC;
3513 s->value = ent - s->section->vma;
3516 len = strlen (syms[i]->name);
3517 memcpy (names, syms[i]->name, len + 1);
3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s->udata.p = syms[i];
3527 if (glink != NULL && relplt != NULL)
3531 /* Add a symbol for the main glink trampoline. */
3532 memset (s, 0, sizeof *s);
3534 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3536 s->value = resolv_vma - glink->vma;
3538 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names += sizeof ("__glink_PLTresolve");
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p = relplt->relocation;
3561 for (i = 0; i < plt_count; i++, p++)
3565 *s = **p->sym_ptr_ptr;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s->flags & BSF_LOCAL) == 0)
3569 s->flags |= BSF_GLOBAL;
3570 s->flags |= BSF_SYNTHETIC;
3572 s->value = glink_vma - glink->vma;
3575 len = strlen ((*p->sym_ptr_ptr)->name);
3576 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3580 memcpy (names, "+0x", sizeof ("+0x") - 1);
3581 names += sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd, names, p->addend);
3583 names += strlen (names);
3585 memcpy (names, "@plt", sizeof ("@plt"));
3586 names += sizeof ("@plt");
3606 /* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3623 The function definition in another object file might be:
3627 . .quad .TOC.@tocbase
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
3672 definition from some other object, eg. a static library.
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
3678 /* Of those relocs that might be copied as dynamic relocs, this function
3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
3683 must_be_dyn_reloc (struct bfd_link_info *info,
3684 enum elf_ppc64_reloc_type r_type)
3696 case R_PPC64_TPREL16:
3697 case R_PPC64_TPREL16_LO:
3698 case R_PPC64_TPREL16_HI:
3699 case R_PPC64_TPREL16_HA:
3700 case R_PPC64_TPREL16_DS:
3701 case R_PPC64_TPREL16_LO_DS:
3702 case R_PPC64_TPREL16_HIGH:
3703 case R_PPC64_TPREL16_HIGHA:
3704 case R_PPC64_TPREL16_HIGHER:
3705 case R_PPC64_TPREL16_HIGHERA:
3706 case R_PPC64_TPREL16_HIGHEST:
3707 case R_PPC64_TPREL16_HIGHESTA:
3708 case R_PPC64_TPREL64:
3709 return !info->executable;
3713 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3724 redefines the function descriptor symbol to point to the copy. This
3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
3728 #define ELIMINATE_COPY_RELOCS 1
3730 /* Section name for stubs is the associated section name plus this
3732 #define STUB_SUFFIX ".stub"
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
3781 enum ppc_stub_type {
3783 ppc_stub_long_branch,
3784 ppc_stub_long_branch_r2off,
3785 ppc_stub_plt_branch,
3786 ppc_stub_plt_branch_r2off,
3788 ppc_stub_plt_call_r2save,
3789 ppc_stub_global_entry
3792 struct ppc_stub_hash_entry {
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root;
3797 enum ppc_stub_type stub_type;
3799 /* The stub section. */
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset;
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value;
3808 asection *target_section;
3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry *h;
3812 struct plt_entry *plt_ent;
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3818 /* Symbol st_other. */
3819 unsigned char other;
3822 struct ppc_branch_hash_entry {
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root;
3827 /* Offset within branch lookup table. */
3828 unsigned int offset;
3830 /* Generation marker. */
3834 /* Used to track dynamic relocations for local symbols. */
3835 struct ppc_dyn_relocs
3837 struct ppc_dyn_relocs *next;
3839 /* The input section of the reloc. */
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count : 31;
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc : 1;
3849 struct ppc_link_hash_entry
3851 struct elf_link_hash_entry elf;
3854 /* A pointer to the most recently used stub hash entry against this
3856 struct ppc_stub_hash_entry *stub_cache;
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry *next_dot_sym;
3862 /* Track dynamic relocs copied for this symbol. */
3863 struct elf_dyn_relocs *dyn_relocs;
3865 /* Link between function code and descriptor symbols. */
3866 struct ppc_link_hash_entry *oh;
3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func:1;
3870 unsigned int is_func_descriptor:1;
3871 unsigned int fake:1;
3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
3876 unsigned int adjust_done:1;
3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined:1;
3881 /* Contexts in which symbol is used in the GOT (or TOC).
3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889 #define TLS_GD 1 /* GD reloc. */
3890 #define TLS_LD 2 /* LD reloc. */
3891 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893 #define TLS_TLS 16 /* Any TLS reloc. */
3894 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3896 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3897 unsigned char tls_mask;
3900 /* ppc64 ELF linker hash table. */
3902 struct ppc_link_hash_table
3904 struct elf_link_hash_table elf;
3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table;
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table;
3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab;
3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params *params;
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3921 /* This is the section to which stubs in the group will be attached. */
3923 /* The stub section. */
3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3929 /* Temp used when calculating TOC pointers. */
3932 asection *toc_first_sec;
3934 /* Highest input section id. */
3937 /* Highest output section index. */
3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry *dot_syms;
3943 /* List of input sections for each output section. */
3944 asection **input_list;
3946 /* Shortcuts to get to dynamic linker sections. */
3953 asection *glink_eh_frame;
3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry *tls_get_addr;
3957 struct ppc_link_hash_entry *tls_get_addr_fd;
3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size;
3963 unsigned long stub_count[ppc_stub_global_entry];
3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals;
3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi:1;
3971 /* Support for multiple toc sections. */
3972 unsigned int do_multi_toc:1;
3973 unsigned int multi_toc_needed:1;
3974 unsigned int second_toc_pass:1;
3975 unsigned int do_toc_opt:1;
3978 unsigned int stub_error:1;
3980 /* Temp used by ppc64_elf_before_check_relocs. */
3981 unsigned int twiddled_syms:1;
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration;
3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache;
3990 /* Rename some of the generic section flags to better document how they
3993 /* Nonzero if this section has TLS related relocations. */
3994 #define has_tls_reloc sec_flg0
3996 /* Nonzero if this section has a call to __tls_get_addr. */
3997 #define has_tls_get_addr_call sec_flg1
3999 /* Nonzero if this section has any toc or got relocs. */
4000 #define has_toc_reloc sec_flg2
4002 /* Nonzero if this section has a call to another section that uses
4004 #define makes_toc_func_call sec_flg3
4006 /* Recursion protection when determining above flag. */
4007 #define call_check_in_progress sec_flg4
4008 #define call_check_done sec_flg5
4010 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4012 #define ppc_hash_table(p) \
4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4016 #define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4020 #define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4024 /* Create an entry in the stub hash table. */
4026 static struct bfd_hash_entry *
4027 stub_hash_newfunc (struct bfd_hash_entry *entry,
4028 struct bfd_hash_table *table,
4031 /* Allocate the structure if it has not already been allocated by a
4035 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4040 /* Call the allocation method of the superclass. */
4041 entry = bfd_hash_newfunc (entry, table, string);
4044 struct ppc_stub_hash_entry *eh;
4046 /* Initialize the local fields. */
4047 eh = (struct ppc_stub_hash_entry *) entry;
4048 eh->stub_type = ppc_stub_none;
4049 eh->stub_sec = NULL;
4050 eh->stub_offset = 0;
4051 eh->target_value = 0;
4052 eh->target_section = NULL;
4062 /* Create an entry in the branch hash table. */
4064 static struct bfd_hash_entry *
4065 branch_hash_newfunc (struct bfd_hash_entry *entry,
4066 struct bfd_hash_table *table,
4069 /* Allocate the structure if it has not already been allocated by a
4073 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4078 /* Call the allocation method of the superclass. */
4079 entry = bfd_hash_newfunc (entry, table, string);
4082 struct ppc_branch_hash_entry *eh;
4084 /* Initialize the local fields. */
4085 eh = (struct ppc_branch_hash_entry *) entry;
4093 /* Create an entry in a ppc64 ELF linker hash table. */
4095 static struct bfd_hash_entry *
4096 link_hash_newfunc (struct bfd_hash_entry *entry,
4097 struct bfd_hash_table *table,
4100 /* Allocate the structure if it has not already been allocated by a
4104 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4109 /* Call the allocation method of the superclass. */
4110 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4115 memset (&eh->u.stub_cache, 0,
4116 (sizeof (struct ppc_link_hash_entry)
4117 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4127 A new object defines "foo" and references "bar".
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4133 Keep a list of newly added dot-symbols. */
4135 if (string[0] == '.')
4137 struct ppc_link_hash_table *htab;
4139 htab = (struct ppc_link_hash_table *) table;
4140 eh->u.next_dot_sym = htab->dot_syms;
4141 htab->dot_syms = eh;
4148 struct tocsave_entry {
4154 tocsave_htab_hash (const void *p)
4156 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4157 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4161 tocsave_htab_eq (const void *p1, const void *p2)
4163 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4164 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4165 return e1->sec == e2->sec && e1->offset == e2->offset;
4168 /* Destroy a ppc64 ELF linker hash table. */
4171 ppc64_elf_link_hash_table_free (bfd *obfd)
4173 struct ppc_link_hash_table *htab;
4175 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4176 if (htab->tocsave_htab)
4177 htab_delete (htab->tocsave_htab);
4178 bfd_hash_table_free (&htab->branch_hash_table);
4179 bfd_hash_table_free (&htab->stub_hash_table);
4180 _bfd_elf_link_hash_table_free (obfd);
4183 /* Create a ppc64 ELF linker hash table. */
4185 static struct bfd_link_hash_table *
4186 ppc64_elf_link_hash_table_create (bfd *abfd)
4188 struct ppc_link_hash_table *htab;
4189 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4191 htab = bfd_zmalloc (amt);
4195 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4196 sizeof (struct ppc_link_hash_entry),
4203 /* Init the stub hash table too. */
4204 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4205 sizeof (struct ppc_stub_hash_entry)))
4207 _bfd_elf_link_hash_table_free (abfd);
4211 /* And the branch hash table. */
4212 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4213 sizeof (struct ppc_branch_hash_entry)))
4215 bfd_hash_table_free (&htab->stub_hash_table);
4216 _bfd_elf_link_hash_table_free (abfd);
4220 htab->tocsave_htab = htab_try_create (1024,
4224 if (htab->tocsave_htab == NULL)
4226 ppc64_elf_link_hash_table_free (abfd);
4229 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
4235 htab->elf.init_got_refcount.refcount = 0;
4236 htab->elf.init_got_refcount.glist = NULL;
4237 htab->elf.init_plt_refcount.refcount = 0;
4238 htab->elf.init_plt_refcount.glist = NULL;
4239 htab->elf.init_got_offset.offset = 0;
4240 htab->elf.init_got_offset.glist = NULL;
4241 htab->elf.init_plt_offset.offset = 0;
4242 htab->elf.init_plt_offset.glist = NULL;
4244 return &htab->elf.root;
4247 /* Create sections for linker generated code. */
4250 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4252 struct ppc_link_hash_table *htab;
4255 htab = ppc_hash_table (info);
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4262 if (htab->sfpr == NULL
4263 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4269 if (htab->glink == NULL
4270 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4273 if (!info->no_ld_generated_unwind_info)
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4280 if (htab->glink_eh_frame == NULL
4281 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4285 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4286 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4287 if (htab->elf.iplt == NULL
4288 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4291 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4292 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4294 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4295 if (htab->elf.irelplt == NULL
4296 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags = (SEC_ALLOC | SEC_LOAD
4301 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4304 if (htab->brlt == NULL
4305 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4312 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4313 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4316 if (htab->relbrlt == NULL
4317 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4323 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4326 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4327 struct ppc64_elf_params *params)
4329 struct ppc_link_hash_table *htab;
4331 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4333 /* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab = ppc_hash_table (info);
4339 htab->elf.dynobj = params->stub_bfd;
4340 htab->params = params;
4342 if (info->relocatable)
4345 return create_linkage_sections (htab->elf.dynobj, info);
4348 /* Build a name for an entry in the stub hash table. */
4351 ppc_stub_name (const asection *input_section,
4352 const asection *sym_sec,
4353 const struct ppc_link_hash_entry *h,
4354 const Elf_Internal_Rela *rel)
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4366 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4367 stub_name = bfd_malloc (len);
4368 if (stub_name == NULL)
4371 len = sprintf (stub_name, "%08x.%s+%x",
4372 input_section->id & 0xffffffff,
4373 h->elf.root.root.string,
4374 (int) rel->r_addend & 0xffffffff);
4378 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4379 stub_name = bfd_malloc (len);
4380 if (stub_name == NULL)
4383 len = sprintf (stub_name, "%08x.%x:%x+%x",
4384 input_section->id & 0xffffffff,
4385 sym_sec->id & 0xffffffff,
4386 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4387 (int) rel->r_addend & 0xffffffff);
4389 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4390 stub_name[len - 2] = 0;
4394 /* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4397 static struct ppc_stub_hash_entry *
4398 ppc_get_stub_entry (const asection *input_section,
4399 const asection *sym_sec,
4400 struct ppc_link_hash_entry *h,
4401 const Elf_Internal_Rela *rel,
4402 struct ppc_link_hash_table *htab)
4404 struct ppc_stub_hash_entry *stub_entry;
4405 const asection *id_sec;
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec = htab->stub_group[input_section->id].link_sec;
4414 if (h != NULL && h->u.stub_cache != NULL
4415 && h->u.stub_cache->h == h
4416 && h->u.stub_cache->id_sec == id_sec)
4418 stub_entry = h->u.stub_cache;
4424 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4425 if (stub_name == NULL)
4428 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4429 stub_name, FALSE, FALSE);
4431 h->u.stub_cache = stub_entry;
4439 /* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4442 static struct ppc_stub_hash_entry *
4443 ppc_add_stub (const char *stub_name,
4445 struct bfd_link_info *info)
4447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4450 struct ppc_stub_hash_entry *stub_entry;
4452 link_sec = htab->stub_group[section->id].link_sec;
4453 stub_sec = htab->stub_group[section->id].stub_sec;
4454 if (stub_sec == NULL)
4456 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4457 if (stub_sec == NULL)
4463 namelen = strlen (link_sec->name);
4464 len = namelen + sizeof (STUB_SUFFIX);
4465 s_name = bfd_alloc (htab->params->stub_bfd, len);
4469 memcpy (s_name, link_sec->name, namelen);
4470 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4471 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4472 if (stub_sec == NULL)
4474 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4476 htab->stub_group[section->id].stub_sec = stub_sec;
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4482 if (stub_entry == NULL)
4484 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4485 section->owner, stub_name);
4489 stub_entry->stub_sec = stub_sec;
4490 stub_entry->stub_offset = 0;
4491 stub_entry->id_sec = link_sec;
4495 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
4499 create_got_section (bfd *abfd, struct bfd_link_info *info)
4501 asection *got, *relgot;
4503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4505 if (!is_ppc64_elf (abfd))
4511 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4514 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED);
4517 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4519 || !bfd_set_section_alignment (abfd, got, 3))
4522 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4523 flags | SEC_READONLY);
4525 || ! bfd_set_section_alignment (abfd, relgot, 3))
4528 ppc64_elf_tdata (abfd)->got = got;
4529 ppc64_elf_tdata (abfd)->relgot = relgot;
4533 /* Create the dynamic sections, and set up shortcuts. */
4536 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4538 struct ppc_link_hash_table *htab;
4540 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4543 htab = ppc_hash_table (info);
4547 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4549 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4551 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4552 || (!info->shared && !htab->relbss))
4558 /* Follow indirect and warning symbol links. */
4560 static inline struct bfd_link_hash_entry *
4561 follow_link (struct bfd_link_hash_entry *h)
4563 while (h->type == bfd_link_hash_indirect
4564 || h->type == bfd_link_hash_warning)
4569 static inline struct elf_link_hash_entry *
4570 elf_follow_link (struct elf_link_hash_entry *h)
4572 return (struct elf_link_hash_entry *) follow_link (&h->root);
4575 static inline struct ppc_link_hash_entry *
4576 ppc_follow_link (struct ppc_link_hash_entry *h)
4578 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4581 /* Merge PLT info on FROM with that on TO. */
4584 move_plt_plist (struct ppc_link_hash_entry *from,
4585 struct ppc_link_hash_entry *to)
4587 if (from->elf.plt.plist != NULL)
4589 if (to->elf.plt.plist != NULL)
4591 struct plt_entry **entp;
4592 struct plt_entry *ent;
4594 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4596 struct plt_entry *dent;
4598 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4599 if (dent->addend == ent->addend)
4601 dent->plt.refcount += ent->plt.refcount;
4608 *entp = to->elf.plt.plist;
4611 to->elf.plt.plist = from->elf.plt.plist;
4612 from->elf.plt.plist = NULL;
4616 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4619 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4620 struct elf_link_hash_entry *dir,
4621 struct elf_link_hash_entry *ind)
4623 struct ppc_link_hash_entry *edir, *eind;
4625 edir = (struct ppc_link_hash_entry *) dir;
4626 eind = (struct ppc_link_hash_entry *) ind;
4628 edir->is_func |= eind->is_func;
4629 edir->is_func_descriptor |= eind->is_func_descriptor;
4630 edir->tls_mask |= eind->tls_mask;
4631 if (eind->oh != NULL)
4632 edir->oh = ppc_follow_link (eind->oh);
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind->elf.root.type != bfd_link_hash_indirect
4639 && edir->elf.dynamic_adjusted))
4640 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4642 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4643 edir->elf.ref_regular |= eind->elf.ref_regular;
4644 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4645 edir->elf.needs_plt |= eind->elf.needs_plt;
4646 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
4649 if (eind->dyn_relocs != NULL)
4651 if (edir->dyn_relocs != NULL)
4653 struct elf_dyn_relocs **pp;
4654 struct elf_dyn_relocs *p;
4656 /* Add reloc counts against the indirect sym to the direct sym
4657 list. Merge any entries against the same section. */
4658 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4660 struct elf_dyn_relocs *q;
4662 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4663 if (q->sec == p->sec)
4665 q->pc_count += p->pc_count;
4666 q->count += p->count;
4673 *pp = edir->dyn_relocs;
4676 edir->dyn_relocs = eind->dyn_relocs;
4677 eind->dyn_relocs = NULL;
4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4687 if (eind->elf.root.type != bfd_link_hash_indirect)
4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
4692 if (eind->elf.got.glist != NULL)
4694 if (edir->elf.got.glist != NULL)
4696 struct got_entry **entp;
4697 struct got_entry *ent;
4699 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4701 struct got_entry *dent;
4703 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4704 if (dent->addend == ent->addend
4705 && dent->owner == ent->owner
4706 && dent->tls_type == ent->tls_type)
4708 dent->got.refcount += ent->got.refcount;
4715 *entp = edir->elf.got.glist;
4718 edir->elf.got.glist = eind->elf.got.glist;
4719 eind->elf.got.glist = NULL;
4722 /* And plt entries. */
4723 move_plt_plist (eind, edir);
4725 if (eind->elf.dynindx != -1)
4727 if (edir->elf.dynindx != -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4729 edir->elf.dynstr_index);
4730 edir->elf.dynindx = eind->elf.dynindx;
4731 edir->elf.dynstr_index = eind->elf.dynstr_index;
4732 eind->elf.dynindx = -1;
4733 eind->elf.dynstr_index = 0;
4737 /* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4740 static struct ppc_link_hash_entry *
4741 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4743 struct ppc_link_hash_entry *fdh = fh->oh;
4747 const char *fd_name = fh->elf.root.root.string + 1;
4749 fdh = (struct ppc_link_hash_entry *)
4750 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4754 fdh->is_func_descriptor = 1;
4760 return ppc_follow_link (fdh);
4763 /* Make a fake function descriptor sym for the code sym FH. */
4765 static struct ppc_link_hash_entry *
4766 make_fdh (struct bfd_link_info *info,
4767 struct ppc_link_hash_entry *fh)
4771 struct bfd_link_hash_entry *bh;
4772 struct ppc_link_hash_entry *fdh;
4774 abfd = fh->elf.root.u.undef.abfd;
4775 newsym = bfd_make_empty_symbol (abfd);
4776 newsym->name = fh->elf.root.root.string + 1;
4777 newsym->section = bfd_und_section_ptr;
4779 newsym->flags = BSF_WEAK;
4782 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4783 newsym->flags, newsym->section,
4784 newsym->value, NULL, FALSE, FALSE,
4788 fdh = (struct ppc_link_hash_entry *) bh;
4789 fdh->elf.non_elf = 0;
4791 fdh->is_func_descriptor = 1;
4798 /* Fix function descriptor symbols defined in .opd sections to be
4802 ppc64_elf_add_symbol_hook (bfd *ibfd,
4803 struct bfd_link_info *info,
4804 Elf_Internal_Sym *isym,
4806 flagword *flags ATTRIBUTE_UNUSED,
4808 bfd_vma *value ATTRIBUTE_UNUSED)
4810 if ((ibfd->flags & DYNAMIC) == 0
4811 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4814 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4816 if ((ibfd->flags & DYNAMIC) == 0)
4817 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4819 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4821 else if (*sec != NULL
4822 && strcmp ((*sec)->name, ".opd") == 0)
4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4825 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4827 if (abiversion (ibfd) == 0)
4828 set_abiversion (ibfd, 2);
4829 else if (abiversion (ibfd) == 1)
4831 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name);
4833 bfd_set_error (bfd_error_bad_value);
4841 /* Merge non-visibility st_other attributes: local entry point. */
4844 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *isym,
4846 bfd_boolean definition,
4847 bfd_boolean dynamic)
4849 if (definition && !dynamic)
4850 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h->other));
4854 /* This function makes an old ABI object reference to ".bar" cause the
4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
4859 static struct elf_link_hash_entry *
4860 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4861 struct bfd_link_info *info,
4864 struct elf_link_hash_entry *h;
4868 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h->root.type == bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry *) h)->fake))
4879 len = strlen (name);
4880 dot_name = bfd_alloc (abfd, len + 2);
4881 if (dot_name == NULL)
4882 return (struct elf_link_hash_entry *) 0 - 1;
4884 memcpy (dot_name + 1, name, len + 1);
4885 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4886 bfd_release (abfd, dot_name);
4890 /* This function satisfies all old ABI object references to ".bar" if a
4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
4900 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4902 struct ppc_link_hash_table *htab;
4903 struct ppc_link_hash_entry *fdh;
4905 if (eh->elf.root.type == bfd_link_hash_indirect)
4908 if (eh->elf.root.type == bfd_link_hash_warning)
4909 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4911 if (eh->elf.root.root.string[0] != '.')
4914 htab = ppc_hash_table (info);
4918 fdh = lookup_fdh (eh, htab);
4921 if (!info->relocatable
4922 && (eh->elf.root.type == bfd_link_hash_undefined
4923 || eh->elf.root.type == bfd_link_hash_undefweak)
4924 && eh->elf.ref_regular)
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh = make_fdh (info, eh);
4932 fdh->elf.ref_regular = 1;
4937 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4938 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4939 if (entry_vis < descr_vis)
4940 fdh->elf.other += entry_vis - descr_vis;
4941 else if (entry_vis > descr_vis)
4942 eh->elf.other += descr_vis - entry_vis;
4944 if ((fdh->elf.root.type == bfd_link_hash_defined
4945 || fdh->elf.root.type == bfd_link_hash_defweak)
4946 && eh->elf.root.type == bfd_link_hash_undefined)
4948 eh->elf.root.type = bfd_link_hash_undefweak;
4949 eh->was_undefined = 1;
4950 htab->twiddled_syms = 1;
4957 /* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
4961 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4963 struct ppc_link_hash_table *htab;
4964 struct ppc_link_hash_entry **p, *eh;
4966 if (!is_ppc64_elf (info->output_bfd))
4968 htab = ppc_hash_table (info);
4972 if (is_ppc64_elf (ibfd))
4974 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4976 if (opd != NULL && opd->size != 0)
4978 if (abiversion (ibfd) == 0)
4979 set_abiversion (ibfd, 1);
4980 else if (abiversion (ibfd) == 2)
4982 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4984 ibfd, abiversion (ibfd));
4985 bfd_set_error (bfd_error_bad_value);
4989 if ((ibfd->flags & DYNAMIC) == 0
4990 && (opd->flags & SEC_RELOC) != 0
4991 && opd->reloc_count != 0
4992 && !bfd_is_abs_section (opd->output_section))
4994 /* Garbage collection needs some extra help with .opd sections.
4995 We don't want to necessarily keep everything referenced by
4996 relocs in .opd, as that would keep all functions. Instead,
4997 if we reference an .opd symbol (a function descriptor), we
4998 want to keep the function code symbol's section. This is
4999 easy for global symbols, but for local syms we need to keep
5000 information about the associated function section. */
5002 asection **opd_sym_map;
5004 amt = opd->size * sizeof (*opd_sym_map) / 8;
5005 opd_sym_map = bfd_zalloc (ibfd, amt);
5006 if (opd_sym_map == NULL)
5008 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5009 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5010 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5014 /* For input files without an explicit abiversion in e_flags
5015 we should have flagged any with symbol st_other bits set
5016 as ELFv1 and above flagged those with .opd as ELFv2.
5017 Set the output abiversion if not yet set, and for any input
5018 still ambiguous, take its abiversion from the output.
5019 Differences in ABI are reported later. */
5020 if (abiversion (info->output_bfd) == 0)
5021 set_abiversion (info->output_bfd, abiversion (ibfd));
5022 else if (abiversion (ibfd) == 0)
5023 set_abiversion (ibfd, abiversion (info->output_bfd));
5025 p = &htab->dot_syms;
5026 while ((eh = *p) != NULL)
5029 if (&eh->elf == htab->elf.hgot)
5031 else if (htab->elf.hgot == NULL
5032 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5033 htab->elf.hgot = &eh->elf;
5034 else if (!add_symbol_adjust (eh, info))
5036 p = &eh->u.next_dot_sym;
5040 /* Clear the list for non-ppc64 input files. */
5041 p = &htab->dot_syms;
5042 while ((eh = *p) != NULL)
5045 p = &eh->u.next_dot_sym;
5048 /* We need to fix the undefs list for any syms we have twiddled to
5050 if (htab->twiddled_syms)
5052 bfd_link_repair_undef_list (&htab->elf.root);
5053 htab->twiddled_syms = 0;
5058 /* Undo hash table changes when an --as-needed input file is determined
5059 not to be needed. */
5062 ppc64_elf_notice_as_needed (bfd *ibfd,
5063 struct bfd_link_info *info,
5064 enum notice_asneeded_action act)
5066 if (act == notice_not_needed)
5068 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5073 htab->dot_syms = NULL;
5075 return _bfd_elf_notice_as_needed (ibfd, info, act);
5078 /* If --just-symbols against a final linked binary, then assume we need
5079 toc adjusting stubs when calling functions defined there. */
5082 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5084 if ((sec->flags & SEC_CODE) != 0
5085 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5086 && is_ppc64_elf (sec->owner))
5088 if (abiversion (sec->owner) >= 2
5089 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5090 sec->has_toc_reloc = 1;
5092 _bfd_elf_link_just_syms (sec, info);
5095 static struct plt_entry **
5096 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5097 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5099 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5100 struct plt_entry **local_plt;
5101 unsigned char *local_got_tls_masks;
5103 if (local_got_ents == NULL)
5105 bfd_size_type size = symtab_hdr->sh_info;
5107 size *= (sizeof (*local_got_ents)
5108 + sizeof (*local_plt)
5109 + sizeof (*local_got_tls_masks));
5110 local_got_ents = bfd_zalloc (abfd, size);
5111 if (local_got_ents == NULL)
5113 elf_local_got_ents (abfd) = local_got_ents;
5116 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5118 struct got_entry *ent;
5120 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5121 if (ent->addend == r_addend
5122 && ent->owner == abfd
5123 && ent->tls_type == tls_type)
5127 bfd_size_type amt = sizeof (*ent);
5128 ent = bfd_alloc (abfd, amt);
5131 ent->next = local_got_ents[r_symndx];
5132 ent->addend = r_addend;
5134 ent->tls_type = tls_type;
5135 ent->is_indirect = FALSE;
5136 ent->got.refcount = 0;
5137 local_got_ents[r_symndx] = ent;
5139 ent->got.refcount += 1;
5142 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5143 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5144 local_got_tls_masks[r_symndx] |= tls_type;
5146 return local_plt + r_symndx;
5150 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5152 struct plt_entry *ent;
5154 for (ent = *plist; ent != NULL; ent = ent->next)
5155 if (ent->addend == addend)
5159 bfd_size_type amt = sizeof (*ent);
5160 ent = bfd_alloc (abfd, amt);
5164 ent->addend = addend;
5165 ent->plt.refcount = 0;
5168 ent->plt.refcount += 1;
5173 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5175 return (r_type == R_PPC64_REL24
5176 || r_type == R_PPC64_REL14
5177 || r_type == R_PPC64_REL14_BRTAKEN
5178 || r_type == R_PPC64_REL14_BRNTAKEN
5179 || r_type == R_PPC64_ADDR24
5180 || r_type == R_PPC64_ADDR14
5181 || r_type == R_PPC64_ADDR14_BRTAKEN
5182 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5185 /* Look through the relocs for a section during the first phase, and
5186 calculate needed space in the global offset table, procedure
5187 linkage table, and dynamic reloc sections. */
5190 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5191 asection *sec, const Elf_Internal_Rela *relocs)
5193 struct ppc_link_hash_table *htab;
5194 Elf_Internal_Shdr *symtab_hdr;
5195 struct elf_link_hash_entry **sym_hashes;
5196 const Elf_Internal_Rela *rel;
5197 const Elf_Internal_Rela *rel_end;
5199 asection **opd_sym_map;
5200 struct elf_link_hash_entry *tga, *dottga;
5202 if (info->relocatable)
5205 /* Don't do anything special with non-loaded, non-alloced sections.
5206 In particular, any relocs in such sections should not affect GOT
5207 and PLT reference counting (ie. we don't allow them to create GOT
5208 or PLT entries), there's no possibility or desire to optimize TLS
5209 relocs, and there's not much point in propagating relocs to shared
5210 libs that the dynamic linker won't relocate. */
5211 if ((sec->flags & SEC_ALLOC) == 0)
5214 BFD_ASSERT (is_ppc64_elf (abfd));
5216 htab = ppc_hash_table (info);
5220 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5221 FALSE, FALSE, TRUE);
5222 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5223 FALSE, FALSE, TRUE);
5224 symtab_hdr = &elf_symtab_hdr (abfd);
5225 sym_hashes = elf_sym_hashes (abfd);
5228 if (ppc64_elf_section_data (sec) != NULL
5229 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5230 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5232 rel_end = relocs + sec->reloc_count;
5233 for (rel = relocs; rel < rel_end; rel++)
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h;
5237 enum elf_ppc64_reloc_type r_type;
5239 struct _ppc64_elf_section_data *ppc64_sec;
5240 struct plt_entry **ifunc;
5242 r_symndx = ELF64_R_SYM (rel->r_info);
5243 if (r_symndx < symtab_hdr->sh_info)
5247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5248 h = elf_follow_link (h);
5250 /* PR15323, ref flags aren't set for references in the same
5252 h->root.non_ir_ref = 1;
5254 if (h == htab->elf.hgot)
5255 sec->has_toc_reloc = 1;
5262 if (h->type == STT_GNU_IFUNC)
5265 ifunc = &h->plt.plist;
5270 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5275 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5277 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5278 rel->r_addend, PLT_IFUNC);
5283 r_type = ELF64_R_TYPE (rel->r_info);
5284 if (is_branch_reloc (r_type))
5286 if (h != NULL && (h == tga || h == dottga))
5289 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5290 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5291 /* We have a new-style __tls_get_addr call with a marker
5295 /* Mark this section as having an old-style call. */
5296 sec->has_tls_get_addr_call = 1;
5299 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5301 && !update_plt_info (abfd, ifunc, rel->r_addend))
5309 /* These special tls relocs tie a call to __tls_get_addr with
5310 its parameter symbol. */
5313 case R_PPC64_GOT_TLSLD16:
5314 case R_PPC64_GOT_TLSLD16_LO:
5315 case R_PPC64_GOT_TLSLD16_HI:
5316 case R_PPC64_GOT_TLSLD16_HA:
5317 tls_type = TLS_TLS | TLS_LD;
5320 case R_PPC64_GOT_TLSGD16:
5321 case R_PPC64_GOT_TLSGD16_LO:
5322 case R_PPC64_GOT_TLSGD16_HI:
5323 case R_PPC64_GOT_TLSGD16_HA:
5324 tls_type = TLS_TLS | TLS_GD;
5327 case R_PPC64_GOT_TPREL16_DS:
5328 case R_PPC64_GOT_TPREL16_LO_DS:
5329 case R_PPC64_GOT_TPREL16_HI:
5330 case R_PPC64_GOT_TPREL16_HA:
5331 if (!info->executable)
5332 info->flags |= DF_STATIC_TLS;
5333 tls_type = TLS_TLS | TLS_TPREL;
5336 case R_PPC64_GOT_DTPREL16_DS:
5337 case R_PPC64_GOT_DTPREL16_LO_DS:
5338 case R_PPC64_GOT_DTPREL16_HI:
5339 case R_PPC64_GOT_DTPREL16_HA:
5340 tls_type = TLS_TLS | TLS_DTPREL;
5342 sec->has_tls_reloc = 1;
5346 case R_PPC64_GOT16_DS:
5347 case R_PPC64_GOT16_HA:
5348 case R_PPC64_GOT16_HI:
5349 case R_PPC64_GOT16_LO:
5350 case R_PPC64_GOT16_LO_DS:
5351 /* This symbol requires a global offset table entry. */
5352 sec->has_toc_reloc = 1;
5353 if (r_type == R_PPC64_GOT_TLSLD16
5354 || r_type == R_PPC64_GOT_TLSGD16
5355 || r_type == R_PPC64_GOT_TPREL16_DS
5356 || r_type == R_PPC64_GOT_DTPREL16_DS
5357 || r_type == R_PPC64_GOT16
5358 || r_type == R_PPC64_GOT16_DS)
5360 htab->do_multi_toc = 1;
5361 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5364 if (ppc64_elf_tdata (abfd)->got == NULL
5365 && !create_got_section (abfd, info))
5370 struct ppc_link_hash_entry *eh;
5371 struct got_entry *ent;
5373 eh = (struct ppc_link_hash_entry *) h;
5374 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5375 if (ent->addend == rel->r_addend
5376 && ent->owner == abfd
5377 && ent->tls_type == tls_type)
5381 bfd_size_type amt = sizeof (*ent);
5382 ent = bfd_alloc (abfd, amt);
5385 ent->next = eh->elf.got.glist;
5386 ent->addend = rel->r_addend;
5388 ent->tls_type = tls_type;
5389 ent->is_indirect = FALSE;
5390 ent->got.refcount = 0;
5391 eh->elf.got.glist = ent;
5393 ent->got.refcount += 1;
5394 eh->tls_mask |= tls_type;
5397 /* This is a global offset table entry for a local symbol. */
5398 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5399 rel->r_addend, tls_type))
5402 /* We may also need a plt entry if the symbol turns out to be
5404 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5406 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5411 case R_PPC64_PLT16_HA:
5412 case R_PPC64_PLT16_HI:
5413 case R_PPC64_PLT16_LO:
5416 /* This symbol requires a procedure linkage table entry. We
5417 actually build the entry in adjust_dynamic_symbol,
5418 because this might be a case of linking PIC code without
5419 linking in any dynamic objects, in which case we don't
5420 need to generate a procedure linkage table after all. */
5423 /* It does not make sense to have a procedure linkage
5424 table entry for a local symbol. */
5425 bfd_set_error (bfd_error_bad_value);
5430 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5433 if (h->root.root.string[0] == '.'
5434 && h->root.root.string[1] != '\0')
5435 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5439 /* The following relocations don't need to propagate the
5440 relocation if linking a shared object since they are
5441 section relative. */
5442 case R_PPC64_SECTOFF:
5443 case R_PPC64_SECTOFF_LO:
5444 case R_PPC64_SECTOFF_HI:
5445 case R_PPC64_SECTOFF_HA:
5446 case R_PPC64_SECTOFF_DS:
5447 case R_PPC64_SECTOFF_LO_DS:
5448 case R_PPC64_DTPREL16:
5449 case R_PPC64_DTPREL16_LO:
5450 case R_PPC64_DTPREL16_HI:
5451 case R_PPC64_DTPREL16_HA:
5452 case R_PPC64_DTPREL16_DS:
5453 case R_PPC64_DTPREL16_LO_DS:
5454 case R_PPC64_DTPREL16_HIGH:
5455 case R_PPC64_DTPREL16_HIGHA:
5456 case R_PPC64_DTPREL16_HIGHER:
5457 case R_PPC64_DTPREL16_HIGHERA:
5458 case R_PPC64_DTPREL16_HIGHEST:
5459 case R_PPC64_DTPREL16_HIGHESTA:
5464 case R_PPC64_REL16_LO:
5465 case R_PPC64_REL16_HI:
5466 case R_PPC64_REL16_HA:
5469 /* Not supported as a dynamic relocation. */
5470 case R_PPC64_ADDR64_LOCAL:
5473 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5475 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5476 "in shared libraries and PIEs.\n"),
5477 abfd, sec, rel->r_offset,
5478 ppc64_elf_howto_table[r_type]->name);
5479 bfd_set_error (bfd_error_bad_value);
5485 case R_PPC64_TOC16_DS:
5486 htab->do_multi_toc = 1;
5487 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5488 case R_PPC64_TOC16_LO:
5489 case R_PPC64_TOC16_HI:
5490 case R_PPC64_TOC16_HA:
5491 case R_PPC64_TOC16_LO_DS:
5492 sec->has_toc_reloc = 1;
5495 /* This relocation describes the C++ object vtable hierarchy.
5496 Reconstruct it for later use during GC. */
5497 case R_PPC64_GNU_VTINHERIT:
5498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5502 /* This relocation describes which C++ vtable entries are actually
5503 used. Record for later use during GC. */
5504 case R_PPC64_GNU_VTENTRY:
5505 BFD_ASSERT (h != NULL);
5507 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5512 case R_PPC64_REL14_BRTAKEN:
5513 case R_PPC64_REL14_BRNTAKEN:
5515 asection *dest = NULL;
5517 /* Heuristic: If jumping outside our section, chances are
5518 we are going to need a stub. */
5521 /* If the sym is weak it may be overridden later, so
5522 don't assume we know where a weak sym lives. */
5523 if (h->root.type == bfd_link_hash_defined)
5524 dest = h->root.u.def.section;
5528 Elf_Internal_Sym *isym;
5530 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5535 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5539 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5544 if (h != NULL && ifunc == NULL)
5546 /* We may need a .plt entry if the function this reloc
5547 refers to is in a shared lib. */
5548 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5551 if (h->root.root.string[0] == '.'
5552 && h->root.root.string[1] != '\0')
5553 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5554 if (h == tga || h == dottga)
5555 sec->has_tls_reloc = 1;
5559 case R_PPC64_TPREL64:
5560 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5561 if (!info->executable)
5562 info->flags |= DF_STATIC_TLS;
5565 case R_PPC64_DTPMOD64:
5566 if (rel + 1 < rel_end
5567 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5568 && rel[1].r_offset == rel->r_offset + 8)
5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5574 case R_PPC64_DTPREL64:
5575 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5577 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5578 && rel[-1].r_offset == rel->r_offset - 8)
5579 /* This is the second reloc of a dtpmod, dtprel pair.
5580 Don't mark with TLS_DTPREL. */
5584 sec->has_tls_reloc = 1;
5587 struct ppc_link_hash_entry *eh;
5588 eh = (struct ppc_link_hash_entry *) h;
5589 eh->tls_mask |= tls_type;
5592 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5593 rel->r_addend, tls_type))
5596 ppc64_sec = ppc64_elf_section_data (sec);
5597 if (ppc64_sec->sec_type != sec_toc)
5601 /* One extra to simplify get_tls_mask. */
5602 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5603 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.symndx == NULL)
5606 amt = sec->size * sizeof (bfd_vma) / 8;
5607 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5608 if (ppc64_sec->u.toc.add == NULL)
5610 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5611 ppc64_sec->sec_type = sec_toc;
5613 BFD_ASSERT (rel->r_offset % 8 == 0);
5614 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5615 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5617 /* Mark the second slot of a GD or LD entry.
5618 -1 to indicate GD and -2 to indicate LD. */
5619 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5620 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5621 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5622 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5625 case R_PPC64_TPREL16:
5626 case R_PPC64_TPREL16_LO:
5627 case R_PPC64_TPREL16_HI:
5628 case R_PPC64_TPREL16_HA:
5629 case R_PPC64_TPREL16_DS:
5630 case R_PPC64_TPREL16_LO_DS:
5631 case R_PPC64_TPREL16_HIGH:
5632 case R_PPC64_TPREL16_HIGHA:
5633 case R_PPC64_TPREL16_HIGHER:
5634 case R_PPC64_TPREL16_HIGHERA:
5635 case R_PPC64_TPREL16_HIGHEST:
5636 case R_PPC64_TPREL16_HIGHESTA:
5639 if (!info->executable)
5640 info->flags |= DF_STATIC_TLS;
5645 case R_PPC64_ADDR64:
5646 if (opd_sym_map != NULL
5647 && rel + 1 < rel_end
5648 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5652 if (h->root.root.string[0] == '.'
5653 && h->root.root.string[1] != 0
5654 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5657 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5662 Elf_Internal_Sym *isym;
5664 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5669 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5670 if (s != NULL && s != sec)
5671 opd_sym_map[rel->r_offset / 8] = s;
5676 case R_PPC64_ADDR16:
5677 case R_PPC64_ADDR16_DS:
5678 case R_PPC64_ADDR16_HA:
5679 case R_PPC64_ADDR16_HI:
5680 case R_PPC64_ADDR16_HIGH:
5681 case R_PPC64_ADDR16_HIGHA:
5682 case R_PPC64_ADDR16_HIGHER:
5683 case R_PPC64_ADDR16_HIGHERA:
5684 case R_PPC64_ADDR16_HIGHEST:
5685 case R_PPC64_ADDR16_HIGHESTA:
5686 case R_PPC64_ADDR16_LO:
5687 case R_PPC64_ADDR16_LO_DS:
5688 if (h != NULL && !info->shared && abiversion (abfd) != 1
5689 && rel->r_addend == 0)
5691 /* We may need a .plt entry if this reloc refers to a
5692 function in a shared lib. */
5693 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5695 h->pointer_equality_needed = 1;
5702 case R_PPC64_ADDR14:
5703 case R_PPC64_ADDR14_BRNTAKEN:
5704 case R_PPC64_ADDR14_BRTAKEN:
5705 case R_PPC64_ADDR24:
5706 case R_PPC64_ADDR32:
5707 case R_PPC64_UADDR16:
5708 case R_PPC64_UADDR32:
5709 case R_PPC64_UADDR64:
5711 if (h != NULL && !info->shared)
5712 /* We may need a copy reloc. */
5715 /* Don't propagate .opd relocs. */
5716 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5719 /* If we are creating a shared library, and this is a reloc
5720 against a global symbol, or a non PC relative reloc
5721 against a local symbol, then we need to copy the reloc
5722 into the shared library. However, if we are linking with
5723 -Bsymbolic, we do not need to copy a reloc against a
5724 global symbol which is defined in an object we are
5725 including in the link (i.e., DEF_REGULAR is set). At
5726 this point we have not seen all the input files, so it is
5727 possible that DEF_REGULAR is not set now but will be set
5728 later (it is never cleared). In case of a weak definition,
5729 DEF_REGULAR may be cleared later by a strong definition in
5730 a shared library. We account for that possibility below by
5731 storing information in the dyn_relocs field of the hash
5732 table entry. A similar situation occurs when creating
5733 shared libraries and symbol visibility changes render the
5736 If on the other hand, we are creating an executable, we
5737 may need to keep relocations for symbols satisfied by a
5738 dynamic library if we manage to avoid copy relocs for the
5742 && (must_be_dyn_reloc (info, r_type)
5744 && (!SYMBOLIC_BIND (info, h)
5745 || h->root.type == bfd_link_hash_defweak
5746 || !h->def_regular))))
5747 || (ELIMINATE_COPY_RELOCS
5750 && (h->root.type == bfd_link_hash_defweak
5751 || !h->def_regular))
5755 /* We must copy these reloc types into the output file.
5756 Create a reloc section in dynobj and make room for
5760 sreloc = _bfd_elf_make_dynamic_reloc_section
5761 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5767 /* If this is a global symbol, we count the number of
5768 relocations we need for this symbol. */
5771 struct elf_dyn_relocs *p;
5772 struct elf_dyn_relocs **head;
5774 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5776 if (p == NULL || p->sec != sec)
5778 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5788 if (!must_be_dyn_reloc (info, r_type))
5793 /* Track dynamic relocs needed for local syms too.
5794 We really need local syms available to do this
5796 struct ppc_dyn_relocs *p;
5797 struct ppc_dyn_relocs **head;
5798 bfd_boolean is_ifunc;
5801 Elf_Internal_Sym *isym;
5803 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5808 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5812 vpp = &elf_section_data (s)->local_dynrel;
5813 head = (struct ppc_dyn_relocs **) vpp;
5814 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5816 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5818 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5820 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5826 p->ifunc = is_ifunc;
5842 /* Merge backend specific data from an object file to the output
5843 object file when linking. */
5846 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5848 unsigned long iflags, oflags;
5850 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5853 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5856 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5859 iflags = elf_elfheader (ibfd)->e_flags;
5860 oflags = elf_elfheader (obfd)->e_flags;
5862 if (iflags & ~EF_PPC64_ABI)
5864 (*_bfd_error_handler)
5865 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5866 bfd_set_error (bfd_error_bad_value);
5869 else if (iflags != oflags && iflags != 0)
5871 (*_bfd_error_handler)
5872 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5873 ibfd, iflags, oflags);
5874 bfd_set_error (bfd_error_bad_value);
5878 /* Merge Tag_compatibility attributes and any common GNU ones. */
5879 _bfd_elf_merge_object_attributes (ibfd, obfd);
5885 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5887 /* Print normal ELF private data. */
5888 _bfd_elf_print_private_bfd_data (abfd, ptr);
5890 if (elf_elfheader (abfd)->e_flags != 0)
5894 /* xgettext:c-format */
5895 fprintf (file, _("private flags = 0x%lx:"),
5896 elf_elfheader (abfd)->e_flags);
5898 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5899 fprintf (file, _(" [abiv%ld]"),
5900 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5907 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5908 of the code entry point, and its section. */
5911 opd_entry_value (asection *opd_sec,
5913 asection **code_sec,
5915 bfd_boolean in_code_sec)
5917 bfd *opd_bfd = opd_sec->owner;
5918 Elf_Internal_Rela *relocs;
5919 Elf_Internal_Rela *lo, *hi, *look;
5922 /* No relocs implies we are linking a --just-symbols object, or looking
5923 at a final linked executable with addr2line or somesuch. */
5924 if (opd_sec->reloc_count == 0)
5926 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5928 if (contents == NULL)
5930 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5931 return (bfd_vma) -1;
5932 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5935 val = bfd_get_64 (opd_bfd, contents + offset);
5936 if (code_sec != NULL)
5938 asection *sec, *likely = NULL;
5944 && val < sec->vma + sec->size)
5950 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5952 && (sec->flags & SEC_LOAD) != 0
5953 && (sec->flags & SEC_ALLOC) != 0)
5958 if (code_off != NULL)
5959 *code_off = val - likely->vma;
5965 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5967 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5969 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5971 /* Go find the opd reloc at the sym address. */
5973 BFD_ASSERT (lo != NULL);
5974 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5978 look = lo + (hi - lo) / 2;
5979 if (look->r_offset < offset)
5981 else if (look->r_offset > offset)
5985 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5987 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5988 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5990 unsigned long symndx = ELF64_R_SYM (look->r_info);
5993 if (symndx < symtab_hdr->sh_info
5994 || elf_sym_hashes (opd_bfd) == NULL)
5996 Elf_Internal_Sym *sym;
5998 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6001 size_t symcnt = symtab_hdr->sh_info;
6002 if (elf_sym_hashes (opd_bfd) == NULL)
6003 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
6004 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
6005 0, NULL, NULL, NULL);
6008 symtab_hdr->contents = (bfd_byte *) sym;
6012 val = sym->st_value;
6013 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6014 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6018 struct elf_link_hash_entry **sym_hashes;
6019 struct elf_link_hash_entry *rh;
6021 sym_hashes = elf_sym_hashes (opd_bfd);
6022 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6025 rh = elf_follow_link (rh);
6026 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6027 || rh->root.type == bfd_link_hash_defweak);
6028 val = rh->root.u.def.value;
6029 sec = rh->root.u.def.section;
6033 /* Handle the odd case where we can be called
6034 during bfd_elf_link_add_symbols before the
6035 symbol hashes have been fully populated. */
6036 Elf_Internal_Sym *sym;
6038 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6039 symndx, NULL, NULL, NULL);
6043 val = sym->st_value;
6044 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6048 val += look->r_addend;
6049 if (code_off != NULL)
6051 if (code_sec != NULL)
6053 if (in_code_sec && *code_sec != sec)
6058 if (sec != NULL && sec->output_section != NULL)
6059 val += sec->output_section->vma + sec->output_offset;
6068 /* If the ELF symbol SYM might be a function in SEC, return the
6069 function size and set *CODE_OFF to the function's entry point,
6070 otherwise return zero. */
6072 static bfd_size_type
6073 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6078 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6079 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6083 if (!(sym->flags & BSF_SYNTHETIC))
6084 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6086 if (strcmp (sym->section->name, ".opd") == 0)
6088 if (opd_entry_value (sym->section, sym->value,
6089 &sec, code_off, TRUE) == (bfd_vma) -1)
6091 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6092 symbol. This size has nothing to do with the code size of the
6093 function, which is what we're supposed to return, but the
6094 code size isn't available without looking up the dot-sym.
6095 However, doing that would be a waste of time particularly
6096 since elf_find_function will look at the dot-sym anyway.
6097 Now, elf_find_function will keep the largest size of any
6098 function sym found at the code address of interest, so return
6099 1 here to avoid it incorrectly caching a larger function size
6100 for a small function. This does mean we return the wrong
6101 size for a new-ABI function of size 24, but all that does is
6102 disable caching for such functions. */
6108 if (sym->section != sec)
6110 *code_off = sym->value;
6117 /* Return true if symbol is defined in a regular object file. */
6120 is_static_defined (struct elf_link_hash_entry *h)
6122 return ((h->root.type == bfd_link_hash_defined
6123 || h->root.type == bfd_link_hash_defweak)
6124 && h->root.u.def.section != NULL
6125 && h->root.u.def.section->output_section != NULL);
6128 /* If FDH is a function descriptor symbol, return the associated code
6129 entry symbol if it is defined. Return NULL otherwise. */
6131 static struct ppc_link_hash_entry *
6132 defined_code_entry (struct ppc_link_hash_entry *fdh)
6134 if (fdh->is_func_descriptor)
6136 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6137 if (fh->elf.root.type == bfd_link_hash_defined
6138 || fh->elf.root.type == bfd_link_hash_defweak)
6144 /* If FH is a function code entry symbol, return the associated
6145 function descriptor symbol if it is defined. Return NULL otherwise. */
6147 static struct ppc_link_hash_entry *
6148 defined_func_desc (struct ppc_link_hash_entry *fh)
6151 && fh->oh->is_func_descriptor)
6153 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6154 if (fdh->elf.root.type == bfd_link_hash_defined
6155 || fdh->elf.root.type == bfd_link_hash_defweak)
6161 /* Mark all our entry sym sections, both opd and code section. */
6164 ppc64_elf_gc_keep (struct bfd_link_info *info)
6166 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6167 struct bfd_sym_chain *sym;
6172 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6174 struct ppc_link_hash_entry *eh, *fh;
6177 eh = (struct ppc_link_hash_entry *)
6178 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6181 if (eh->elf.root.type != bfd_link_hash_defined
6182 && eh->elf.root.type != bfd_link_hash_defweak)
6185 fh = defined_code_entry (eh);
6188 sec = fh->elf.root.u.def.section;
6189 sec->flags |= SEC_KEEP;
6191 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6192 && opd_entry_value (eh->elf.root.u.def.section,
6193 eh->elf.root.u.def.value,
6194 &sec, NULL, FALSE) != (bfd_vma) -1)
6195 sec->flags |= SEC_KEEP;
6197 sec = eh->elf.root.u.def.section;
6198 sec->flags |= SEC_KEEP;
6202 /* Mark sections containing dynamically referenced symbols. When
6203 building shared libraries, we must assume that any visible symbol is
6207 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6209 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6210 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6211 struct ppc_link_hash_entry *fdh;
6212 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6214 /* Dynamic linking info is on the func descriptor sym. */
6215 fdh = defined_func_desc (eh);
6219 if ((eh->elf.root.type == bfd_link_hash_defined
6220 || eh->elf.root.type == bfd_link_hash_defweak)
6221 && (eh->elf.ref_dynamic
6222 || (eh->elf.def_regular
6223 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6224 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6225 && (!info->executable
6226 || info->export_dynamic
6229 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6230 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6231 || !bfd_hide_sym_by_version (info->version_info,
6232 eh->elf.root.root.string)))))
6235 struct ppc_link_hash_entry *fh;
6237 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6239 /* Function descriptor syms cause the associated
6240 function code sym section to be marked. */
6241 fh = defined_code_entry (eh);
6244 code_sec = fh->elf.root.u.def.section;
6245 code_sec->flags |= SEC_KEEP;
6247 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6248 && opd_entry_value (eh->elf.root.u.def.section,
6249 eh->elf.root.u.def.value,
6250 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6251 code_sec->flags |= SEC_KEEP;
6257 /* Return the section that should be marked against GC for a given
6261 ppc64_elf_gc_mark_hook (asection *sec,
6262 struct bfd_link_info *info,
6263 Elf_Internal_Rela *rel,
6264 struct elf_link_hash_entry *h,
6265 Elf_Internal_Sym *sym)
6269 /* Syms return NULL if we're marking .opd, so we avoid marking all
6270 function sections, as all functions are referenced in .opd. */
6272 if (get_opd_info (sec) != NULL)
6277 enum elf_ppc64_reloc_type r_type;
6278 struct ppc_link_hash_entry *eh, *fh, *fdh;
6280 r_type = ELF64_R_TYPE (rel->r_info);
6283 case R_PPC64_GNU_VTINHERIT:
6284 case R_PPC64_GNU_VTENTRY:
6288 switch (h->root.type)
6290 case bfd_link_hash_defined:
6291 case bfd_link_hash_defweak:
6292 eh = (struct ppc_link_hash_entry *) h;
6293 fdh = defined_func_desc (eh);
6297 /* Function descriptor syms cause the associated
6298 function code sym section to be marked. */
6299 fh = defined_code_entry (eh);
6302 /* They also mark their opd section. */
6303 eh->elf.root.u.def.section->gc_mark = 1;
6305 rsec = fh->elf.root.u.def.section;
6307 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6308 && opd_entry_value (eh->elf.root.u.def.section,
6309 eh->elf.root.u.def.value,
6310 &rsec, NULL, FALSE) != (bfd_vma) -1)
6311 eh->elf.root.u.def.section->gc_mark = 1;
6313 rsec = h->root.u.def.section;
6316 case bfd_link_hash_common:
6317 rsec = h->root.u.c.p->section;
6321 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6327 struct _opd_sec_data *opd;
6329 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6330 opd = get_opd_info (rsec);
6331 if (opd != NULL && opd->func_sec != NULL)
6335 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6342 /* Update the .got, .plt. and dynamic reloc reference counts for the
6343 section being removed. */
6346 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6347 asection *sec, const Elf_Internal_Rela *relocs)
6349 struct ppc_link_hash_table *htab;
6350 Elf_Internal_Shdr *symtab_hdr;
6351 struct elf_link_hash_entry **sym_hashes;
6352 struct got_entry **local_got_ents;
6353 const Elf_Internal_Rela *rel, *relend;
6355 if (info->relocatable)
6358 if ((sec->flags & SEC_ALLOC) == 0)
6361 elf_section_data (sec)->local_dynrel = NULL;
6363 htab = ppc_hash_table (info);
6367 symtab_hdr = &elf_symtab_hdr (abfd);
6368 sym_hashes = elf_sym_hashes (abfd);
6369 local_got_ents = elf_local_got_ents (abfd);
6371 relend = relocs + sec->reloc_count;
6372 for (rel = relocs; rel < relend; rel++)
6374 unsigned long r_symndx;
6375 enum elf_ppc64_reloc_type r_type;
6376 struct elf_link_hash_entry *h = NULL;
6377 unsigned char tls_type = 0;
6379 r_symndx = ELF64_R_SYM (rel->r_info);
6380 r_type = ELF64_R_TYPE (rel->r_info);
6381 if (r_symndx >= symtab_hdr->sh_info)
6383 struct ppc_link_hash_entry *eh;
6384 struct elf_dyn_relocs **pp;
6385 struct elf_dyn_relocs *p;
6387 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6388 h = elf_follow_link (h);
6389 eh = (struct ppc_link_hash_entry *) h;
6391 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6394 /* Everything must go for SEC. */
6400 if (is_branch_reloc (r_type))
6402 struct plt_entry **ifunc = NULL;
6405 if (h->type == STT_GNU_IFUNC)
6406 ifunc = &h->plt.plist;
6408 else if (local_got_ents != NULL)
6410 struct plt_entry **local_plt = (struct plt_entry **)
6411 (local_got_ents + symtab_hdr->sh_info);
6412 unsigned char *local_got_tls_masks = (unsigned char *)
6413 (local_plt + symtab_hdr->sh_info);
6414 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6415 ifunc = local_plt + r_symndx;
6419 struct plt_entry *ent;
6421 for (ent = *ifunc; ent != NULL; ent = ent->next)
6422 if (ent->addend == rel->r_addend)
6426 if (ent->plt.refcount > 0)
6427 ent->plt.refcount -= 1;
6434 case R_PPC64_GOT_TLSLD16:
6435 case R_PPC64_GOT_TLSLD16_LO:
6436 case R_PPC64_GOT_TLSLD16_HI:
6437 case R_PPC64_GOT_TLSLD16_HA:
6438 tls_type = TLS_TLS | TLS_LD;
6441 case R_PPC64_GOT_TLSGD16:
6442 case R_PPC64_GOT_TLSGD16_LO:
6443 case R_PPC64_GOT_TLSGD16_HI:
6444 case R_PPC64_GOT_TLSGD16_HA:
6445 tls_type = TLS_TLS | TLS_GD;
6448 case R_PPC64_GOT_TPREL16_DS:
6449 case R_PPC64_GOT_TPREL16_LO_DS:
6450 case R_PPC64_GOT_TPREL16_HI:
6451 case R_PPC64_GOT_TPREL16_HA:
6452 tls_type = TLS_TLS | TLS_TPREL;
6455 case R_PPC64_GOT_DTPREL16_DS:
6456 case R_PPC64_GOT_DTPREL16_LO_DS:
6457 case R_PPC64_GOT_DTPREL16_HI:
6458 case R_PPC64_GOT_DTPREL16_HA:
6459 tls_type = TLS_TLS | TLS_DTPREL;
6463 case R_PPC64_GOT16_DS:
6464 case R_PPC64_GOT16_HA:
6465 case R_PPC64_GOT16_HI:
6466 case R_PPC64_GOT16_LO:
6467 case R_PPC64_GOT16_LO_DS:
6470 struct got_entry *ent;
6475 ent = local_got_ents[r_symndx];
6477 for (; ent != NULL; ent = ent->next)
6478 if (ent->addend == rel->r_addend
6479 && ent->owner == abfd
6480 && ent->tls_type == tls_type)
6484 if (ent->got.refcount > 0)
6485 ent->got.refcount -= 1;
6489 case R_PPC64_PLT16_HA:
6490 case R_PPC64_PLT16_HI:
6491 case R_PPC64_PLT16_LO:
6495 case R_PPC64_REL14_BRNTAKEN:
6496 case R_PPC64_REL14_BRTAKEN:
6500 struct plt_entry *ent;
6502 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6503 if (ent->addend == rel->r_addend)
6505 if (ent != NULL && ent->plt.refcount > 0)
6506 ent->plt.refcount -= 1;
6517 /* The maximum size of .sfpr. */
6518 #define SFPR_MAX (218*4)
6520 struct sfpr_def_parms
6522 const char name[12];
6523 unsigned char lo, hi;
6524 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6525 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6528 /* Auto-generate _save*, _rest* functions in .sfpr. */
6531 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6533 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6535 size_t len = strlen (parm->name);
6536 bfd_boolean writing = FALSE;
6542 memcpy (sym, parm->name, len);
6545 for (i = parm->lo; i <= parm->hi; i++)
6547 struct elf_link_hash_entry *h;
6549 sym[len + 0] = i / 10 + '0';
6550 sym[len + 1] = i % 10 + '0';
6551 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6555 h->root.type = bfd_link_hash_defined;
6556 h->root.u.def.section = htab->sfpr;
6557 h->root.u.def.value = htab->sfpr->size;
6560 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6562 if (htab->sfpr->contents == NULL)
6564 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6565 if (htab->sfpr->contents == NULL)
6571 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6573 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6575 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6576 htab->sfpr->size = p - htab->sfpr->contents;
6584 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6586 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6591 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6593 p = savegpr0 (abfd, p, r);
6594 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6596 bfd_put_32 (abfd, BLR, p);
6601 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6603 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6608 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6610 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6612 p = restgpr0 (abfd, p, r);
6613 bfd_put_32 (abfd, MTLR_R0, p);
6617 p = restgpr0 (abfd, p, 30);
6618 p = restgpr0 (abfd, p, 31);
6620 bfd_put_32 (abfd, BLR, p);
6625 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6627 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6632 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6634 p = savegpr1 (abfd, p, r);
6635 bfd_put_32 (abfd, BLR, p);
6640 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6642 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6647 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6649 p = restgpr1 (abfd, p, r);
6650 bfd_put_32 (abfd, BLR, p);
6655 savefpr (bfd *abfd, bfd_byte *p, int r)
6657 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6662 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6664 p = savefpr (abfd, p, r);
6665 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6667 bfd_put_32 (abfd, BLR, p);
6672 restfpr (bfd *abfd, bfd_byte *p, int r)
6674 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6679 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6681 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6683 p = restfpr (abfd, p, r);
6684 bfd_put_32 (abfd, MTLR_R0, p);
6688 p = restfpr (abfd, p, 30);
6689 p = restfpr (abfd, p, 31);
6691 bfd_put_32 (abfd, BLR, p);
6696 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6698 p = savefpr (abfd, p, r);
6699 bfd_put_32 (abfd, BLR, p);
6704 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6706 p = restfpr (abfd, p, r);
6707 bfd_put_32 (abfd, BLR, p);
6712 savevr (bfd *abfd, bfd_byte *p, int r)
6714 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6716 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6721 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6723 p = savevr (abfd, p, r);
6724 bfd_put_32 (abfd, BLR, p);
6729 restvr (bfd *abfd, bfd_byte *p, int r)
6731 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6733 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6738 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6740 p = restvr (abfd, p, r);
6741 bfd_put_32 (abfd, BLR, p);
6745 /* Called via elf_link_hash_traverse to transfer dynamic linking
6746 information on function code symbol entries to their corresponding
6747 function descriptor symbol entries. */
6750 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6752 struct bfd_link_info *info;
6753 struct ppc_link_hash_table *htab;
6754 struct plt_entry *ent;
6755 struct ppc_link_hash_entry *fh;
6756 struct ppc_link_hash_entry *fdh;
6757 bfd_boolean force_local;
6759 fh = (struct ppc_link_hash_entry *) h;
6760 if (fh->elf.root.type == bfd_link_hash_indirect)
6764 htab = ppc_hash_table (info);
6768 /* Resolve undefined references to dot-symbols as the value
6769 in the function descriptor, if we have one in a regular object.
6770 This is to satisfy cases like ".quad .foo". Calls to functions
6771 in dynamic objects are handled elsewhere. */
6772 if (fh->elf.root.type == bfd_link_hash_undefweak
6773 && fh->was_undefined
6774 && (fdh = defined_func_desc (fh)) != NULL
6775 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6776 && opd_entry_value (fdh->elf.root.u.def.section,
6777 fdh->elf.root.u.def.value,
6778 &fh->elf.root.u.def.section,
6779 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6781 fh->elf.root.type = fdh->elf.root.type;
6782 fh->elf.forced_local = 1;
6783 fh->elf.def_regular = fdh->elf.def_regular;
6784 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6787 /* If this is a function code symbol, transfer dynamic linking
6788 information to the function descriptor symbol. */
6792 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6793 if (ent->plt.refcount > 0)
6796 || fh->elf.root.root.string[0] != '.'
6797 || fh->elf.root.root.string[1] == '\0')
6800 /* Find the corresponding function descriptor symbol. Create it
6801 as undefined if necessary. */
6803 fdh = lookup_fdh (fh, htab);
6805 && !info->executable
6806 && (fh->elf.root.type == bfd_link_hash_undefined
6807 || fh->elf.root.type == bfd_link_hash_undefweak))
6809 fdh = make_fdh (info, fh);
6814 /* Fake function descriptors are made undefweak. If the function
6815 code symbol is strong undefined, make the fake sym the same.
6816 If the function code symbol is defined, then force the fake
6817 descriptor local; We can't support overriding of symbols in a
6818 shared library on a fake descriptor. */
6822 && fdh->elf.root.type == bfd_link_hash_undefweak)
6824 if (fh->elf.root.type == bfd_link_hash_undefined)
6826 fdh->elf.root.type = bfd_link_hash_undefined;
6827 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6829 else if (fh->elf.root.type == bfd_link_hash_defined
6830 || fh->elf.root.type == bfd_link_hash_defweak)
6832 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6837 && !fdh->elf.forced_local
6838 && (!info->executable
6839 || fdh->elf.def_dynamic
6840 || fdh->elf.ref_dynamic
6841 || (fdh->elf.root.type == bfd_link_hash_undefweak
6842 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6844 if (fdh->elf.dynindx == -1)
6845 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6847 fdh->elf.ref_regular |= fh->elf.ref_regular;
6848 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6849 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6850 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6851 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6853 move_plt_plist (fh, fdh);
6854 fdh->elf.needs_plt = 1;
6856 fdh->is_func_descriptor = 1;
6861 /* Now that the info is on the function descriptor, clear the
6862 function code sym info. Any function code syms for which we
6863 don't have a definition in a regular file, we force local.
6864 This prevents a shared library from exporting syms that have
6865 been imported from another library. Function code syms that
6866 are really in the library we must leave global to prevent the
6867 linker dragging in a definition from a static library. */
6868 force_local = (!fh->elf.def_regular
6870 || !fdh->elf.def_regular
6871 || fdh->elf.forced_local);
6872 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6877 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6878 this hook to a) provide some gcc support functions, and b) transfer
6879 dynamic linking information gathered so far on function code symbol
6880 entries, to their corresponding function descriptor symbol entries. */
6883 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6884 struct bfd_link_info *info)
6886 struct ppc_link_hash_table *htab;
6888 static const struct sfpr_def_parms funcs[] =
6890 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6891 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6892 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6893 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6894 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6895 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6896 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6897 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6898 { "._savef", 14, 31, savefpr, savefpr1_tail },
6899 { "._restf", 14, 31, restfpr, restfpr1_tail },
6900 { "_savevr_", 20, 31, savevr, savevr_tail },
6901 { "_restvr_", 20, 31, restvr, restvr_tail }
6904 htab = ppc_hash_table (info);
6908 if (!info->relocatable
6909 && htab->elf.hgot != NULL)
6911 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6912 /* Make .TOC. defined so as to prevent it being made dynamic.
6913 The wrong value here is fixed later in ppc64_elf_set_toc. */
6914 htab->elf.hgot->type = STT_OBJECT;
6915 htab->elf.hgot->root.type = bfd_link_hash_defined;
6916 htab->elf.hgot->root.u.def.value = 0;
6917 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6918 htab->elf.hgot->def_regular = 1;
6919 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6923 if (htab->sfpr == NULL)
6924 /* We don't have any relocs. */
6927 /* Provide any missing _save* and _rest* functions. */
6928 htab->sfpr->size = 0;
6929 if (htab->params->save_restore_funcs)
6930 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6931 if (!sfpr_define (info, &funcs[i]))
6934 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6936 if (htab->sfpr->size == 0)
6937 htab->sfpr->flags |= SEC_EXCLUDE;
6942 /* Return true if we have dynamic relocs that apply to read-only sections. */
6945 readonly_dynrelocs (struct elf_link_hash_entry *h)
6947 struct ppc_link_hash_entry *eh;
6948 struct elf_dyn_relocs *p;
6950 eh = (struct ppc_link_hash_entry *) h;
6951 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6953 asection *s = p->sec->output_section;
6955 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6961 /* Adjust a symbol defined by a dynamic object and referenced by a
6962 regular object. The current definition is in some section of the
6963 dynamic object, but we're not including those sections. We have to
6964 change the definition to something the rest of the link can
6968 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6969 struct elf_link_hash_entry *h)
6971 struct ppc_link_hash_table *htab;
6974 htab = ppc_hash_table (info);
6978 /* Deal with function syms. */
6979 if (h->type == STT_FUNC
6980 || h->type == STT_GNU_IFUNC
6983 /* Clear procedure linkage table information for any symbol that
6984 won't need a .plt entry. */
6985 struct plt_entry *ent;
6986 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6987 if (ent->plt.refcount > 0)
6990 || (h->type != STT_GNU_IFUNC
6991 && (SYMBOL_CALLS_LOCAL (info, h)
6992 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6993 && h->root.type == bfd_link_hash_undefweak))))
6995 h->plt.plist = NULL;
6998 else if (abiversion (info->output_bfd) == 2)
7000 /* After adjust_dynamic_symbol, non_got_ref set in the
7001 non-shared case means that we have allocated space in
7002 .dynbss for the symbol and thus dyn_relocs for this
7003 symbol should be discarded.
7004 If we get here we know we are making a PLT entry for this
7005 symbol, and in an executable we'd normally resolve
7006 relocations against this symbol to the PLT entry. Allow
7007 dynamic relocs if the reference is weak, and the dynamic
7008 relocs will not cause text relocation. */
7009 if (!h->ref_regular_nonweak
7011 && h->type != STT_GNU_IFUNC
7012 && !readonly_dynrelocs (h))
7015 /* If making a plt entry, then we don't need copy relocs. */
7020 h->plt.plist = NULL;
7022 /* If this is a weak symbol, and there is a real definition, the
7023 processor independent code will have arranged for us to see the
7024 real definition first, and we can just use the same value. */
7025 if (h->u.weakdef != NULL)
7027 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7028 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7029 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7030 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7031 if (ELIMINATE_COPY_RELOCS)
7032 h->non_got_ref = h->u.weakdef->non_got_ref;
7036 /* If we are creating a shared library, we must presume that the
7037 only references to the symbol are via the global offset table.
7038 For such cases we need not do anything here; the relocations will
7039 be handled correctly by relocate_section. */
7043 /* If there are no references to this symbol that do not use the
7044 GOT, we don't need to generate a copy reloc. */
7045 if (!h->non_got_ref)
7048 /* Don't generate a copy reloc for symbols defined in the executable. */
7049 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7052 /* If we didn't find any dynamic relocs in read-only sections, then
7053 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7054 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7060 if (h->plt.plist != NULL)
7062 /* We should never get here, but unfortunately there are versions
7063 of gcc out there that improperly (for this ABI) put initialized
7064 function pointers, vtable refs and suchlike in read-only
7065 sections. Allow them to proceed, but warn that this might
7066 break at runtime. */
7067 info->callbacks->einfo
7068 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7069 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7070 h->root.root.string);
7073 /* This is a reference to a symbol defined by a dynamic object which
7074 is not a function. */
7076 /* We must allocate the symbol in our .dynbss section, which will
7077 become part of the .bss section of the executable. There will be
7078 an entry for this symbol in the .dynsym section. The dynamic
7079 object will contain position independent code, so all references
7080 from the dynamic object to this symbol will go through the global
7081 offset table. The dynamic linker will use the .dynsym entry to
7082 determine the address it must put in the global offset table, so
7083 both the dynamic object and the regular object will refer to the
7084 same memory location for the variable. */
7086 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7087 to copy the initial value out of the dynamic object and into the
7088 runtime process image. We need to remember the offset into the
7089 .rela.bss section we are going to use. */
7090 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7092 htab->relbss->size += sizeof (Elf64_External_Rela);
7098 return _bfd_elf_adjust_dynamic_copy (h, s);
7101 /* If given a function descriptor symbol, hide both the function code
7102 sym and the descriptor. */
7104 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7105 struct elf_link_hash_entry *h,
7106 bfd_boolean force_local)
7108 struct ppc_link_hash_entry *eh;
7109 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7111 eh = (struct ppc_link_hash_entry *) h;
7112 if (eh->is_func_descriptor)
7114 struct ppc_link_hash_entry *fh = eh->oh;
7119 struct ppc_link_hash_table *htab;
7122 /* We aren't supposed to use alloca in BFD because on
7123 systems which do not have alloca the version in libiberty
7124 calls xmalloc, which might cause the program to crash
7125 when it runs out of memory. This function doesn't have a
7126 return status, so there's no way to gracefully return an
7127 error. So cheat. We know that string[-1] can be safely
7128 accessed; It's either a string in an ELF string table,
7129 or allocated in an objalloc structure. */
7131 p = eh->elf.root.root.string - 1;
7134 htab = ppc_hash_table (info);
7138 fh = (struct ppc_link_hash_entry *)
7139 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7142 /* Unfortunately, if it so happens that the string we were
7143 looking for was allocated immediately before this string,
7144 then we overwrote the string terminator. That's the only
7145 reason the lookup should fail. */
7148 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7149 while (q >= eh->elf.root.root.string && *q == *p)
7151 if (q < eh->elf.root.root.string && *p == '.')
7152 fh = (struct ppc_link_hash_entry *)
7153 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7162 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7167 get_sym_h (struct elf_link_hash_entry **hp,
7168 Elf_Internal_Sym **symp,
7170 unsigned char **tls_maskp,
7171 Elf_Internal_Sym **locsymsp,
7172 unsigned long r_symndx,
7175 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7177 if (r_symndx >= symtab_hdr->sh_info)
7179 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7180 struct elf_link_hash_entry *h;
7182 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7183 h = elf_follow_link (h);
7191 if (symsecp != NULL)
7193 asection *symsec = NULL;
7194 if (h->root.type == bfd_link_hash_defined
7195 || h->root.type == bfd_link_hash_defweak)
7196 symsec = h->root.u.def.section;
7200 if (tls_maskp != NULL)
7202 struct ppc_link_hash_entry *eh;
7204 eh = (struct ppc_link_hash_entry *) h;
7205 *tls_maskp = &eh->tls_mask;
7210 Elf_Internal_Sym *sym;
7211 Elf_Internal_Sym *locsyms = *locsymsp;
7213 if (locsyms == NULL)
7215 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7216 if (locsyms == NULL)
7217 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7218 symtab_hdr->sh_info,
7219 0, NULL, NULL, NULL);
7220 if (locsyms == NULL)
7222 *locsymsp = locsyms;
7224 sym = locsyms + r_symndx;
7232 if (symsecp != NULL)
7233 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7235 if (tls_maskp != NULL)
7237 struct got_entry **lgot_ents;
7238 unsigned char *tls_mask;
7241 lgot_ents = elf_local_got_ents (ibfd);
7242 if (lgot_ents != NULL)
7244 struct plt_entry **local_plt = (struct plt_entry **)
7245 (lgot_ents + symtab_hdr->sh_info);
7246 unsigned char *lgot_masks = (unsigned char *)
7247 (local_plt + symtab_hdr->sh_info);
7248 tls_mask = &lgot_masks[r_symndx];
7250 *tls_maskp = tls_mask;
7256 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7257 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7258 type suitable for optimization, and 1 otherwise. */
7261 get_tls_mask (unsigned char **tls_maskp,
7262 unsigned long *toc_symndx,
7263 bfd_vma *toc_addend,
7264 Elf_Internal_Sym **locsymsp,
7265 const Elf_Internal_Rela *rel,
7268 unsigned long r_symndx;
7270 struct elf_link_hash_entry *h;
7271 Elf_Internal_Sym *sym;
7275 r_symndx = ELF64_R_SYM (rel->r_info);
7276 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7279 if ((*tls_maskp != NULL && **tls_maskp != 0)
7281 || ppc64_elf_section_data (sec) == NULL
7282 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7285 /* Look inside a TOC section too. */
7288 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7289 off = h->root.u.def.value;
7292 off = sym->st_value;
7293 off += rel->r_addend;
7294 BFD_ASSERT (off % 8 == 0);
7295 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7296 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7297 if (toc_symndx != NULL)
7298 *toc_symndx = r_symndx;
7299 if (toc_addend != NULL)
7300 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7301 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7303 if ((h == NULL || is_static_defined (h))
7304 && (next_r == -1 || next_r == -2))
7309 /* Find (or create) an entry in the tocsave hash table. */
7311 static struct tocsave_entry *
7312 tocsave_find (struct ppc_link_hash_table *htab,
7313 enum insert_option insert,
7314 Elf_Internal_Sym **local_syms,
7315 const Elf_Internal_Rela *irela,
7318 unsigned long r_indx;
7319 struct elf_link_hash_entry *h;
7320 Elf_Internal_Sym *sym;
7321 struct tocsave_entry ent, *p;
7323 struct tocsave_entry **slot;
7325 r_indx = ELF64_R_SYM (irela->r_info);
7326 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7328 if (ent.sec == NULL || ent.sec->output_section == NULL)
7330 (*_bfd_error_handler)
7331 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7336 ent.offset = h->root.u.def.value;
7338 ent.offset = sym->st_value;
7339 ent.offset += irela->r_addend;
7341 hash = tocsave_htab_hash (&ent);
7342 slot = ((struct tocsave_entry **)
7343 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7349 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7358 /* Adjust all global syms defined in opd sections. In gcc generated
7359 code for the old ABI, these will already have been done. */
7362 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7364 struct ppc_link_hash_entry *eh;
7366 struct _opd_sec_data *opd;
7368 if (h->root.type == bfd_link_hash_indirect)
7371 if (h->root.type != bfd_link_hash_defined
7372 && h->root.type != bfd_link_hash_defweak)
7375 eh = (struct ppc_link_hash_entry *) h;
7376 if (eh->adjust_done)
7379 sym_sec = eh->elf.root.u.def.section;
7380 opd = get_opd_info (sym_sec);
7381 if (opd != NULL && opd->adjust != NULL)
7383 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7386 /* This entry has been deleted. */
7387 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7390 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7391 if (discarded_section (dsec))
7393 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7397 eh->elf.root.u.def.value = 0;
7398 eh->elf.root.u.def.section = dsec;
7401 eh->elf.root.u.def.value += adjust;
7402 eh->adjust_done = 1;
7407 /* Handles decrementing dynamic reloc counts for the reloc specified by
7408 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7409 have already been determined. */
7412 dec_dynrel_count (bfd_vma r_info,
7414 struct bfd_link_info *info,
7415 Elf_Internal_Sym **local_syms,
7416 struct elf_link_hash_entry *h,
7417 Elf_Internal_Sym *sym)
7419 enum elf_ppc64_reloc_type r_type;
7420 asection *sym_sec = NULL;
7422 /* Can this reloc be dynamic? This switch, and later tests here
7423 should be kept in sync with the code in check_relocs. */
7424 r_type = ELF64_R_TYPE (r_info);
7430 case R_PPC64_TPREL16:
7431 case R_PPC64_TPREL16_LO:
7432 case R_PPC64_TPREL16_HI:
7433 case R_PPC64_TPREL16_HA:
7434 case R_PPC64_TPREL16_DS:
7435 case R_PPC64_TPREL16_LO_DS:
7436 case R_PPC64_TPREL16_HIGH:
7437 case R_PPC64_TPREL16_HIGHA:
7438 case R_PPC64_TPREL16_HIGHER:
7439 case R_PPC64_TPREL16_HIGHERA:
7440 case R_PPC64_TPREL16_HIGHEST:
7441 case R_PPC64_TPREL16_HIGHESTA:
7445 case R_PPC64_TPREL64:
7446 case R_PPC64_DTPMOD64:
7447 case R_PPC64_DTPREL64:
7448 case R_PPC64_ADDR64:
7452 case R_PPC64_ADDR14:
7453 case R_PPC64_ADDR14_BRNTAKEN:
7454 case R_PPC64_ADDR14_BRTAKEN:
7455 case R_PPC64_ADDR16:
7456 case R_PPC64_ADDR16_DS:
7457 case R_PPC64_ADDR16_HA:
7458 case R_PPC64_ADDR16_HI:
7459 case R_PPC64_ADDR16_HIGH:
7460 case R_PPC64_ADDR16_HIGHA:
7461 case R_PPC64_ADDR16_HIGHER:
7462 case R_PPC64_ADDR16_HIGHERA:
7463 case R_PPC64_ADDR16_HIGHEST:
7464 case R_PPC64_ADDR16_HIGHESTA:
7465 case R_PPC64_ADDR16_LO:
7466 case R_PPC64_ADDR16_LO_DS:
7467 case R_PPC64_ADDR24:
7468 case R_PPC64_ADDR32:
7469 case R_PPC64_UADDR16:
7470 case R_PPC64_UADDR32:
7471 case R_PPC64_UADDR64:
7476 if (local_syms != NULL)
7478 unsigned long r_symndx;
7479 bfd *ibfd = sec->owner;
7481 r_symndx = ELF64_R_SYM (r_info);
7482 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7487 && (must_be_dyn_reloc (info, r_type)
7489 && (!SYMBOLIC_BIND (info, h)
7490 || h->root.type == bfd_link_hash_defweak
7491 || !h->def_regular))))
7492 || (ELIMINATE_COPY_RELOCS
7495 && (h->root.type == bfd_link_hash_defweak
7496 || !h->def_regular)))
7503 struct elf_dyn_relocs *p;
7504 struct elf_dyn_relocs **pp;
7505 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7507 /* elf_gc_sweep may have already removed all dyn relocs associated
7508 with local syms for a given section. Also, symbol flags are
7509 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7510 report a dynreloc miscount. */
7511 if (*pp == NULL && info->gc_sections)
7514 while ((p = *pp) != NULL)
7518 if (!must_be_dyn_reloc (info, r_type))
7530 struct ppc_dyn_relocs *p;
7531 struct ppc_dyn_relocs **pp;
7533 bfd_boolean is_ifunc;
7535 if (local_syms == NULL)
7536 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7537 if (sym_sec == NULL)
7540 vpp = &elf_section_data (sym_sec)->local_dynrel;
7541 pp = (struct ppc_dyn_relocs **) vpp;
7543 if (*pp == NULL && info->gc_sections)
7546 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7547 while ((p = *pp) != NULL)
7549 if (p->sec == sec && p->ifunc == is_ifunc)
7560 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7562 bfd_set_error (bfd_error_bad_value);
7566 /* Remove unused Official Procedure Descriptor entries. Currently we
7567 only remove those associated with functions in discarded link-once
7568 sections, or weakly defined functions that have been overridden. It
7569 would be possible to remove many more entries for statically linked
7573 ppc64_elf_edit_opd (struct bfd_link_info *info)
7576 bfd_boolean some_edited = FALSE;
7577 asection *need_pad = NULL;
7578 struct ppc_link_hash_table *htab;
7580 htab = ppc_hash_table (info);
7584 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7587 Elf_Internal_Rela *relstart, *rel, *relend;
7588 Elf_Internal_Shdr *symtab_hdr;
7589 Elf_Internal_Sym *local_syms;
7591 struct _opd_sec_data *opd;
7592 bfd_boolean need_edit, add_aux_fields;
7593 bfd_size_type cnt_16b = 0;
7595 if (!is_ppc64_elf (ibfd))
7598 sec = bfd_get_section_by_name (ibfd, ".opd");
7599 if (sec == NULL || sec->size == 0)
7602 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7605 if (sec->output_section == bfd_abs_section_ptr)
7608 /* Look through the section relocs. */
7609 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7613 symtab_hdr = &elf_symtab_hdr (ibfd);
7615 /* Read the relocations. */
7616 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7618 if (relstart == NULL)
7621 /* First run through the relocs to check they are sane, and to
7622 determine whether we need to edit this opd section. */
7626 relend = relstart + sec->reloc_count;
7627 for (rel = relstart; rel < relend; )
7629 enum elf_ppc64_reloc_type r_type;
7630 unsigned long r_symndx;
7632 struct elf_link_hash_entry *h;
7633 Elf_Internal_Sym *sym;
7635 /* .opd contains a regular array of 16 or 24 byte entries. We're
7636 only interested in the reloc pointing to a function entry
7638 if (rel->r_offset != offset
7639 || rel + 1 >= relend
7640 || (rel + 1)->r_offset != offset + 8)
7642 /* If someone messes with .opd alignment then after a
7643 "ld -r" we might have padding in the middle of .opd.
7644 Also, there's nothing to prevent someone putting
7645 something silly in .opd with the assembler. No .opd
7646 optimization for them! */
7648 (*_bfd_error_handler)
7649 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7654 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7655 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7657 (*_bfd_error_handler)
7658 (_("%B: unexpected reloc type %u in .opd section"),
7664 r_symndx = ELF64_R_SYM (rel->r_info);
7665 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7669 if (sym_sec == NULL || sym_sec->owner == NULL)
7671 const char *sym_name;
7673 sym_name = h->root.root.string;
7675 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7678 (*_bfd_error_handler)
7679 (_("%B: undefined sym `%s' in .opd section"),
7685 /* opd entries are always for functions defined in the
7686 current input bfd. If the symbol isn't defined in the
7687 input bfd, then we won't be using the function in this
7688 bfd; It must be defined in a linkonce section in another
7689 bfd, or is weak. It's also possible that we are
7690 discarding the function due to a linker script /DISCARD/,
7691 which we test for via the output_section. */
7692 if (sym_sec->owner != ibfd
7693 || sym_sec->output_section == bfd_abs_section_ptr)
7698 || (rel + 1 == relend && rel->r_offset == offset + 16))
7700 if (sec->size == offset + 24)
7705 if (rel == relend && sec->size == offset + 16)
7713 if (rel->r_offset == offset + 24)
7715 else if (rel->r_offset != offset + 16)
7717 else if (rel + 1 < relend
7718 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7719 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7724 else if (rel + 2 < relend
7725 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7726 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7735 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7737 if (need_edit || add_aux_fields)
7739 Elf_Internal_Rela *write_rel;
7740 Elf_Internal_Shdr *rel_hdr;
7741 bfd_byte *rptr, *wptr;
7742 bfd_byte *new_contents;
7747 new_contents = NULL;
7748 amt = sec->size * sizeof (long) / 8;
7749 opd = &ppc64_elf_section_data (sec)->u.opd;
7750 opd->adjust = bfd_zalloc (sec->owner, amt);
7751 if (opd->adjust == NULL)
7753 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7755 /* This seems a waste of time as input .opd sections are all
7756 zeros as generated by gcc, but I suppose there's no reason
7757 this will always be so. We might start putting something in
7758 the third word of .opd entries. */
7759 if ((sec->flags & SEC_IN_MEMORY) == 0)
7762 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7767 if (local_syms != NULL
7768 && symtab_hdr->contents != (unsigned char *) local_syms)
7770 if (elf_section_data (sec)->relocs != relstart)
7774 sec->contents = loc;
7775 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7778 elf_section_data (sec)->relocs = relstart;
7780 new_contents = sec->contents;
7783 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7784 if (new_contents == NULL)
7788 wptr = new_contents;
7789 rptr = sec->contents;
7791 write_rel = relstart;
7795 for (rel = relstart; rel < relend; rel++)
7797 unsigned long r_symndx;
7799 struct elf_link_hash_entry *h;
7800 Elf_Internal_Sym *sym;
7802 r_symndx = ELF64_R_SYM (rel->r_info);
7803 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7807 if (rel->r_offset == offset)
7809 struct ppc_link_hash_entry *fdh = NULL;
7811 /* See if the .opd entry is full 24 byte or
7812 16 byte (with fd_aux entry overlapped with next
7815 if ((rel + 2 == relend && sec->size == offset + 16)
7816 || (rel + 3 < relend
7817 && rel[2].r_offset == offset + 16
7818 && rel[3].r_offset == offset + 24
7819 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7820 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7824 && h->root.root.string[0] == '.')
7826 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7828 && fdh->elf.root.type != bfd_link_hash_defined
7829 && fdh->elf.root.type != bfd_link_hash_defweak)
7833 skip = (sym_sec->owner != ibfd
7834 || sym_sec->output_section == bfd_abs_section_ptr);
7837 if (fdh != NULL && sym_sec->owner == ibfd)
7839 /* Arrange for the function descriptor sym
7841 fdh->elf.root.u.def.value = 0;
7842 fdh->elf.root.u.def.section = sym_sec;
7844 opd->adjust[rel->r_offset / 8] = -1;
7848 /* We'll be keeping this opd entry. */
7852 /* Redefine the function descriptor symbol to
7853 this location in the opd section. It is
7854 necessary to update the value here rather
7855 than using an array of adjustments as we do
7856 for local symbols, because various places
7857 in the generic ELF code use the value
7858 stored in u.def.value. */
7859 fdh->elf.root.u.def.value = wptr - new_contents;
7860 fdh->adjust_done = 1;
7863 /* Local syms are a bit tricky. We could
7864 tweak them as they can be cached, but
7865 we'd need to look through the local syms
7866 for the function descriptor sym which we
7867 don't have at the moment. So keep an
7868 array of adjustments. */
7869 opd->adjust[rel->r_offset / 8]
7870 = (wptr - new_contents) - (rptr - sec->contents);
7873 memcpy (wptr, rptr, opd_ent_size);
7874 wptr += opd_ent_size;
7875 if (add_aux_fields && opd_ent_size == 16)
7877 memset (wptr, '\0', 8);
7881 rptr += opd_ent_size;
7882 offset += opd_ent_size;
7888 && !info->relocatable
7889 && !dec_dynrel_count (rel->r_info, sec, info,
7895 /* We need to adjust any reloc offsets to point to the
7896 new opd entries. While we're at it, we may as well
7897 remove redundant relocs. */
7898 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7899 if (write_rel != rel)
7900 memcpy (write_rel, rel, sizeof (*rel));
7905 sec->size = wptr - new_contents;
7906 sec->reloc_count = write_rel - relstart;
7909 free (sec->contents);
7910 sec->contents = new_contents;
7913 /* Fudge the header size too, as this is used later in
7914 elf_bfd_final_link if we are emitting relocs. */
7915 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7916 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7919 else if (elf_section_data (sec)->relocs != relstart)
7922 if (local_syms != NULL
7923 && symtab_hdr->contents != (unsigned char *) local_syms)
7925 if (!info->keep_memory)
7928 symtab_hdr->contents = (unsigned char *) local_syms;
7933 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7935 /* If we are doing a final link and the last .opd entry is just 16 byte
7936 long, add a 8 byte padding after it. */
7937 if (need_pad != NULL && !info->relocatable)
7941 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7943 BFD_ASSERT (need_pad->size > 0);
7945 p = bfd_malloc (need_pad->size + 8);
7949 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7950 p, 0, need_pad->size))
7953 need_pad->contents = p;
7954 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7958 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7962 need_pad->contents = p;
7965 memset (need_pad->contents + need_pad->size, 0, 8);
7966 need_pad->size += 8;
7972 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7975 ppc64_elf_tls_setup (struct bfd_link_info *info)
7977 struct ppc_link_hash_table *htab;
7979 htab = ppc_hash_table (info);
7983 if (abiversion (info->output_bfd) == 1)
7986 if (htab->params->no_multi_toc)
7987 htab->do_multi_toc = 0;
7988 else if (!htab->do_multi_toc)
7989 htab->params->no_multi_toc = 1;
7991 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7992 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7993 FALSE, FALSE, TRUE));
7994 /* Move dynamic linking info to the function descriptor sym. */
7995 if (htab->tls_get_addr != NULL)
7996 func_desc_adjust (&htab->tls_get_addr->elf, info);
7997 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7998 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7999 FALSE, FALSE, TRUE));
8000 if (!htab->params->no_tls_get_addr_opt)
8002 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8004 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8005 FALSE, FALSE, TRUE);
8007 func_desc_adjust (opt, info);
8008 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8009 FALSE, FALSE, TRUE);
8011 && (opt_fd->root.type == bfd_link_hash_defined
8012 || opt_fd->root.type == bfd_link_hash_defweak))
8014 /* If glibc supports an optimized __tls_get_addr call stub,
8015 signalled by the presence of __tls_get_addr_opt, and we'll
8016 be calling __tls_get_addr via a plt call stub, then
8017 make __tls_get_addr point to __tls_get_addr_opt. */
8018 tga_fd = &htab->tls_get_addr_fd->elf;
8019 if (htab->elf.dynamic_sections_created
8021 && (tga_fd->type == STT_FUNC
8022 || tga_fd->needs_plt)
8023 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8024 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8025 && tga_fd->root.type == bfd_link_hash_undefweak)))
8027 struct plt_entry *ent;
8029 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8030 if (ent->plt.refcount > 0)
8034 tga_fd->root.type = bfd_link_hash_indirect;
8035 tga_fd->root.u.i.link = &opt_fd->root;
8036 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8037 if (opt_fd->dynindx != -1)
8039 /* Use __tls_get_addr_opt in dynamic relocations. */
8040 opt_fd->dynindx = -1;
8041 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8042 opt_fd->dynstr_index);
8043 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8046 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8047 tga = &htab->tls_get_addr->elf;
8048 if (opt != NULL && tga != NULL)
8050 tga->root.type = bfd_link_hash_indirect;
8051 tga->root.u.i.link = &opt->root;
8052 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8053 _bfd_elf_link_hash_hide_symbol (info, opt,
8055 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8057 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8058 htab->tls_get_addr_fd->is_func_descriptor = 1;
8059 if (htab->tls_get_addr != NULL)
8061 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8062 htab->tls_get_addr->is_func = 1;
8068 htab->params->no_tls_get_addr_opt = TRUE;
8070 return _bfd_elf_tls_setup (info->output_bfd, info);
8073 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8077 branch_reloc_hash_match (const bfd *ibfd,
8078 const Elf_Internal_Rela *rel,
8079 const struct ppc_link_hash_entry *hash1,
8080 const struct ppc_link_hash_entry *hash2)
8082 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8083 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8084 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8086 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8088 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8089 struct elf_link_hash_entry *h;
8091 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8092 h = elf_follow_link (h);
8093 if (h == &hash1->elf || h == &hash2->elf)
8099 /* Run through all the TLS relocs looking for optimization
8100 opportunities. The linker has been hacked (see ppc64elf.em) to do
8101 a preliminary section layout so that we know the TLS segment
8102 offsets. We can't optimize earlier because some optimizations need
8103 to know the tp offset, and we need to optimize before allocating
8104 dynamic relocations. */
8107 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8111 struct ppc_link_hash_table *htab;
8112 unsigned char *toc_ref;
8115 if (info->relocatable || !info->executable)
8118 htab = ppc_hash_table (info);
8122 /* Make two passes over the relocs. On the first pass, mark toc
8123 entries involved with tls relocs, and check that tls relocs
8124 involved in setting up a tls_get_addr call are indeed followed by
8125 such a call. If they are not, we can't do any tls optimization.
8126 On the second pass twiddle tls_mask flags to notify
8127 relocate_section that optimization can be done, and adjust got
8128 and plt refcounts. */
8130 for (pass = 0; pass < 2; ++pass)
8131 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8133 Elf_Internal_Sym *locsyms = NULL;
8134 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8136 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8137 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8139 Elf_Internal_Rela *relstart, *rel, *relend;
8140 bfd_boolean found_tls_get_addr_arg = 0;
8142 /* Read the relocations. */
8143 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8145 if (relstart == NULL)
8151 relend = relstart + sec->reloc_count;
8152 for (rel = relstart; rel < relend; rel++)
8154 enum elf_ppc64_reloc_type r_type;
8155 unsigned long r_symndx;
8156 struct elf_link_hash_entry *h;
8157 Elf_Internal_Sym *sym;
8159 unsigned char *tls_mask;
8160 unsigned char tls_set, tls_clear, tls_type = 0;
8162 bfd_boolean ok_tprel, is_local;
8163 long toc_ref_index = 0;
8164 int expecting_tls_get_addr = 0;
8165 bfd_boolean ret = FALSE;
8167 r_symndx = ELF64_R_SYM (rel->r_info);
8168 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8172 if (elf_section_data (sec)->relocs != relstart)
8174 if (toc_ref != NULL)
8177 && (elf_symtab_hdr (ibfd).contents
8178 != (unsigned char *) locsyms))
8185 if (h->root.type == bfd_link_hash_defined
8186 || h->root.type == bfd_link_hash_defweak)
8187 value = h->root.u.def.value;
8188 else if (h->root.type == bfd_link_hash_undefweak)
8192 found_tls_get_addr_arg = 0;
8197 /* Symbols referenced by TLS relocs must be of type
8198 STT_TLS. So no need for .opd local sym adjust. */
8199 value = sym->st_value;
8208 && h->root.type == bfd_link_hash_undefweak)
8212 value += sym_sec->output_offset;
8213 value += sym_sec->output_section->vma;
8214 value -= htab->elf.tls_sec->vma;
8215 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8216 < (bfd_vma) 1 << 32);
8220 r_type = ELF64_R_TYPE (rel->r_info);
8221 /* If this section has old-style __tls_get_addr calls
8222 without marker relocs, then check that each
8223 __tls_get_addr call reloc is preceded by a reloc
8224 that conceivably belongs to the __tls_get_addr arg
8225 setup insn. If we don't find matching arg setup
8226 relocs, don't do any tls optimization. */
8228 && sec->has_tls_get_addr_call
8230 && (h == &htab->tls_get_addr->elf
8231 || h == &htab->tls_get_addr_fd->elf)
8232 && !found_tls_get_addr_arg
8233 && is_branch_reloc (r_type))
8235 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8236 "TLS optimization disabled\n"),
8237 ibfd, sec, rel->r_offset);
8242 found_tls_get_addr_arg = 0;
8245 case R_PPC64_GOT_TLSLD16:
8246 case R_PPC64_GOT_TLSLD16_LO:
8247 expecting_tls_get_addr = 1;
8248 found_tls_get_addr_arg = 1;
8251 case R_PPC64_GOT_TLSLD16_HI:
8252 case R_PPC64_GOT_TLSLD16_HA:
8253 /* These relocs should never be against a symbol
8254 defined in a shared lib. Leave them alone if
8255 that turns out to be the case. */
8262 tls_type = TLS_TLS | TLS_LD;
8265 case R_PPC64_GOT_TLSGD16:
8266 case R_PPC64_GOT_TLSGD16_LO:
8267 expecting_tls_get_addr = 1;
8268 found_tls_get_addr_arg = 1;
8271 case R_PPC64_GOT_TLSGD16_HI:
8272 case R_PPC64_GOT_TLSGD16_HA:
8278 tls_set = TLS_TLS | TLS_TPRELGD;
8280 tls_type = TLS_TLS | TLS_GD;
8283 case R_PPC64_GOT_TPREL16_DS:
8284 case R_PPC64_GOT_TPREL16_LO_DS:
8285 case R_PPC64_GOT_TPREL16_HI:
8286 case R_PPC64_GOT_TPREL16_HA:
8291 tls_clear = TLS_TPREL;
8292 tls_type = TLS_TLS | TLS_TPREL;
8299 found_tls_get_addr_arg = 1;
8304 case R_PPC64_TOC16_LO:
8305 if (sym_sec == NULL || sym_sec != toc)
8308 /* Mark this toc entry as referenced by a TLS
8309 code sequence. We can do that now in the
8310 case of R_PPC64_TLS, and after checking for
8311 tls_get_addr for the TOC16 relocs. */
8312 if (toc_ref == NULL)
8313 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8314 if (toc_ref == NULL)
8318 value = h->root.u.def.value;
8320 value = sym->st_value;
8321 value += rel->r_addend;
8322 BFD_ASSERT (value < toc->size && value % 8 == 0);
8323 toc_ref_index = (value + toc->output_offset) / 8;
8324 if (r_type == R_PPC64_TLS
8325 || r_type == R_PPC64_TLSGD
8326 || r_type == R_PPC64_TLSLD)
8328 toc_ref[toc_ref_index] = 1;
8332 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8337 expecting_tls_get_addr = 2;
8340 case R_PPC64_TPREL64:
8344 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8349 tls_set = TLS_EXPLICIT;
8350 tls_clear = TLS_TPREL;
8355 case R_PPC64_DTPMOD64:
8359 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8361 if (rel + 1 < relend
8363 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8364 && rel[1].r_offset == rel->r_offset + 8)
8368 tls_set = TLS_EXPLICIT | TLS_GD;
8371 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8380 tls_set = TLS_EXPLICIT;
8391 if (!expecting_tls_get_addr
8392 || !sec->has_tls_get_addr_call)
8395 if (rel + 1 < relend
8396 && branch_reloc_hash_match (ibfd, rel + 1,
8398 htab->tls_get_addr_fd))
8400 if (expecting_tls_get_addr == 2)
8402 /* Check for toc tls entries. */
8403 unsigned char *toc_tls;
8406 retval = get_tls_mask (&toc_tls, NULL, NULL,
8411 if (toc_tls != NULL)
8413 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8414 found_tls_get_addr_arg = 1;
8416 toc_ref[toc_ref_index] = 1;
8422 if (expecting_tls_get_addr != 1)
8425 /* Uh oh, we didn't find the expected call. We
8426 could just mark this symbol to exclude it
8427 from tls optimization but it's safer to skip
8428 the entire optimization. */
8429 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8430 "TLS optimization disabled\n"),
8431 ibfd, sec, rel->r_offset);
8436 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8438 struct plt_entry *ent;
8439 for (ent = htab->tls_get_addr->elf.plt.plist;
8442 if (ent->addend == 0)
8444 if (ent->plt.refcount > 0)
8446 ent->plt.refcount -= 1;
8447 expecting_tls_get_addr = 0;
8453 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8455 struct plt_entry *ent;
8456 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8459 if (ent->addend == 0)
8461 if (ent->plt.refcount > 0)
8462 ent->plt.refcount -= 1;
8470 if ((tls_set & TLS_EXPLICIT) == 0)
8472 struct got_entry *ent;
8474 /* Adjust got entry for this reloc. */
8478 ent = elf_local_got_ents (ibfd)[r_symndx];
8480 for (; ent != NULL; ent = ent->next)
8481 if (ent->addend == rel->r_addend
8482 && ent->owner == ibfd
8483 && ent->tls_type == tls_type)
8490 /* We managed to get rid of a got entry. */
8491 if (ent->got.refcount > 0)
8492 ent->got.refcount -= 1;
8497 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8498 we'll lose one or two dyn relocs. */
8499 if (!dec_dynrel_count (rel->r_info, sec, info,
8503 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8505 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8511 *tls_mask |= tls_set;
8512 *tls_mask &= ~tls_clear;
8515 if (elf_section_data (sec)->relocs != relstart)
8520 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8522 if (!info->keep_memory)
8525 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8529 if (toc_ref != NULL)
8534 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8535 the values of any global symbols in a toc section that has been
8536 edited. Globals in toc sections should be a rarity, so this function
8537 sets a flag if any are found in toc sections other than the one just
8538 edited, so that futher hash table traversals can be avoided. */
8540 struct adjust_toc_info
8543 unsigned long *skip;
8544 bfd_boolean global_toc_syms;
8547 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8550 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8552 struct ppc_link_hash_entry *eh;
8553 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8556 if (h->root.type != bfd_link_hash_defined
8557 && h->root.type != bfd_link_hash_defweak)
8560 eh = (struct ppc_link_hash_entry *) h;
8561 if (eh->adjust_done)
8564 if (eh->elf.root.u.def.section == toc_inf->toc)
8566 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8567 i = toc_inf->toc->rawsize >> 3;
8569 i = eh->elf.root.u.def.value >> 3;
8571 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8573 (*_bfd_error_handler)
8574 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8577 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8578 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8581 eh->elf.root.u.def.value -= toc_inf->skip[i];
8582 eh->adjust_done = 1;
8584 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8585 toc_inf->global_toc_syms = TRUE;
8590 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8593 ok_lo_toc_insn (unsigned int insn)
8595 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8596 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8597 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8598 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8599 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8600 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8601 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8602 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8603 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8604 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8605 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8606 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8607 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8608 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8609 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8611 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8612 && ((insn & 3) == 0 || (insn & 3) == 3))
8613 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8616 /* Examine all relocs referencing .toc sections in order to remove
8617 unused .toc entries. */
8620 ppc64_elf_edit_toc (struct bfd_link_info *info)
8623 struct adjust_toc_info toc_inf;
8624 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8626 htab->do_toc_opt = 1;
8627 toc_inf.global_toc_syms = TRUE;
8628 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8630 asection *toc, *sec;
8631 Elf_Internal_Shdr *symtab_hdr;
8632 Elf_Internal_Sym *local_syms;
8633 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8634 unsigned long *skip, *drop;
8635 unsigned char *used;
8636 unsigned char *keep, last, some_unused;
8638 if (!is_ppc64_elf (ibfd))
8641 toc = bfd_get_section_by_name (ibfd, ".toc");
8644 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8645 || discarded_section (toc))
8650 symtab_hdr = &elf_symtab_hdr (ibfd);
8652 /* Look at sections dropped from the final link. */
8655 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8657 if (sec->reloc_count == 0
8658 || !discarded_section (sec)
8659 || get_opd_info (sec)
8660 || (sec->flags & SEC_ALLOC) == 0
8661 || (sec->flags & SEC_DEBUGGING) != 0)
8664 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8665 if (relstart == NULL)
8668 /* Run through the relocs to see which toc entries might be
8670 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8672 enum elf_ppc64_reloc_type r_type;
8673 unsigned long r_symndx;
8675 struct elf_link_hash_entry *h;
8676 Elf_Internal_Sym *sym;
8679 r_type = ELF64_R_TYPE (rel->r_info);
8686 case R_PPC64_TOC16_LO:
8687 case R_PPC64_TOC16_HI:
8688 case R_PPC64_TOC16_HA:
8689 case R_PPC64_TOC16_DS:
8690 case R_PPC64_TOC16_LO_DS:
8694 r_symndx = ELF64_R_SYM (rel->r_info);
8695 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8703 val = h->root.u.def.value;
8705 val = sym->st_value;
8706 val += rel->r_addend;
8708 if (val >= toc->size)
8711 /* Anything in the toc ought to be aligned to 8 bytes.
8712 If not, don't mark as unused. */
8718 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8723 skip[val >> 3] = ref_from_discarded;
8726 if (elf_section_data (sec)->relocs != relstart)
8730 /* For largetoc loads of address constants, we can convert
8731 . addis rx,2,addr@got@ha
8732 . ld ry,addr@got@l(rx)
8734 . addis rx,2,addr@toc@ha
8735 . addi ry,rx,addr@toc@l
8736 when addr is within 2G of the toc pointer. This then means
8737 that the word storing "addr" in the toc is no longer needed. */
8739 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8740 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8741 && toc->reloc_count != 0)
8743 /* Read toc relocs. */
8744 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8746 if (toc_relocs == NULL)
8749 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8751 enum elf_ppc64_reloc_type r_type;
8752 unsigned long r_symndx;
8754 struct elf_link_hash_entry *h;
8755 Elf_Internal_Sym *sym;
8758 r_type = ELF64_R_TYPE (rel->r_info);
8759 if (r_type != R_PPC64_ADDR64)
8762 r_symndx = ELF64_R_SYM (rel->r_info);
8763 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8768 || discarded_section (sym_sec))
8771 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8776 if (h->type == STT_GNU_IFUNC)
8778 val = h->root.u.def.value;
8782 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8784 val = sym->st_value;
8786 val += rel->r_addend;
8787 val += sym_sec->output_section->vma + sym_sec->output_offset;
8789 /* We don't yet know the exact toc pointer value, but we
8790 know it will be somewhere in the toc section. Don't
8791 optimize if the difference from any possible toc
8792 pointer is outside [ff..f80008000, 7fff7fff]. */
8793 addr = toc->output_section->vma + TOC_BASE_OFF;
8794 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8797 addr = toc->output_section->vma + toc->output_section->rawsize;
8798 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8803 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8808 skip[rel->r_offset >> 3]
8809 |= can_optimize | ((rel - toc_relocs) << 2);
8816 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8820 if (local_syms != NULL
8821 && symtab_hdr->contents != (unsigned char *) local_syms)
8825 && elf_section_data (sec)->relocs != relstart)
8827 if (toc_relocs != NULL
8828 && elf_section_data (toc)->relocs != toc_relocs)
8835 /* Now check all kept sections that might reference the toc.
8836 Check the toc itself last. */
8837 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8840 sec = (sec == toc ? NULL
8841 : sec->next == NULL ? toc
8842 : sec->next == toc && toc->next ? toc->next
8847 if (sec->reloc_count == 0
8848 || discarded_section (sec)
8849 || get_opd_info (sec)
8850 || (sec->flags & SEC_ALLOC) == 0
8851 || (sec->flags & SEC_DEBUGGING) != 0)
8854 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8856 if (relstart == NULL)
8862 /* Mark toc entries referenced as used. */
8866 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8868 enum elf_ppc64_reloc_type r_type;
8869 unsigned long r_symndx;
8871 struct elf_link_hash_entry *h;
8872 Elf_Internal_Sym *sym;
8874 enum {no_check, check_lo, check_ha} insn_check;
8876 r_type = ELF64_R_TYPE (rel->r_info);
8880 insn_check = no_check;
8883 case R_PPC64_GOT_TLSLD16_HA:
8884 case R_PPC64_GOT_TLSGD16_HA:
8885 case R_PPC64_GOT_TPREL16_HA:
8886 case R_PPC64_GOT_DTPREL16_HA:
8887 case R_PPC64_GOT16_HA:
8888 case R_PPC64_TOC16_HA:
8889 insn_check = check_ha;
8892 case R_PPC64_GOT_TLSLD16_LO:
8893 case R_PPC64_GOT_TLSGD16_LO:
8894 case R_PPC64_GOT_TPREL16_LO_DS:
8895 case R_PPC64_GOT_DTPREL16_LO_DS:
8896 case R_PPC64_GOT16_LO:
8897 case R_PPC64_GOT16_LO_DS:
8898 case R_PPC64_TOC16_LO:
8899 case R_PPC64_TOC16_LO_DS:
8900 insn_check = check_lo;
8904 if (insn_check != no_check)
8906 bfd_vma off = rel->r_offset & ~3;
8907 unsigned char buf[4];
8910 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8915 insn = bfd_get_32 (ibfd, buf);
8916 if (insn_check == check_lo
8917 ? !ok_lo_toc_insn (insn)
8918 : ((insn & ((0x3f << 26) | 0x1f << 16))
8919 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8923 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8924 sprintf (str, "%#08x", insn);
8925 info->callbacks->einfo
8926 (_("%P: %H: toc optimization is not supported for"
8927 " %s instruction.\n"),
8928 ibfd, sec, rel->r_offset & ~3, str);
8935 case R_PPC64_TOC16_LO:
8936 case R_PPC64_TOC16_HI:
8937 case R_PPC64_TOC16_HA:
8938 case R_PPC64_TOC16_DS:
8939 case R_PPC64_TOC16_LO_DS:
8940 /* In case we're taking addresses of toc entries. */
8941 case R_PPC64_ADDR64:
8948 r_symndx = ELF64_R_SYM (rel->r_info);
8949 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8960 val = h->root.u.def.value;
8962 val = sym->st_value;
8963 val += rel->r_addend;
8965 if (val >= toc->size)
8968 if ((skip[val >> 3] & can_optimize) != 0)
8975 case R_PPC64_TOC16_HA:
8978 case R_PPC64_TOC16_LO_DS:
8979 off = rel->r_offset;
8980 off += (bfd_big_endian (ibfd) ? -2 : 3);
8981 if (!bfd_get_section_contents (ibfd, sec, &opc,
8987 if ((opc & (0x3f << 2)) == (58u << 2))
8992 /* Wrong sort of reloc, or not a ld. We may
8993 as well clear ref_from_discarded too. */
9000 /* For the toc section, we only mark as used if this
9001 entry itself isn't unused. */
9002 else if ((used[rel->r_offset >> 3]
9003 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9006 /* Do all the relocs again, to catch reference
9015 if (elf_section_data (sec)->relocs != relstart)
9019 /* Merge the used and skip arrays. Assume that TOC
9020 doublewords not appearing as either used or unused belong
9021 to to an entry more than one doubleword in size. */
9022 for (drop = skip, keep = used, last = 0, some_unused = 0;
9023 drop < skip + (toc->size + 7) / 8;
9028 *drop &= ~ref_from_discarded;
9029 if ((*drop & can_optimize) != 0)
9033 else if ((*drop & ref_from_discarded) != 0)
9036 last = ref_from_discarded;
9046 bfd_byte *contents, *src;
9048 Elf_Internal_Sym *sym;
9049 bfd_boolean local_toc_syms = FALSE;
9051 /* Shuffle the toc contents, and at the same time convert the
9052 skip array from booleans into offsets. */
9053 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9056 elf_section_data (toc)->this_hdr.contents = contents;
9058 for (src = contents, off = 0, drop = skip;
9059 src < contents + toc->size;
9062 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9067 memcpy (src - off, src, 8);
9071 toc->rawsize = toc->size;
9072 toc->size = src - contents - off;
9074 /* Adjust addends for relocs against the toc section sym,
9075 and optimize any accesses we can. */
9076 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9078 if (sec->reloc_count == 0
9079 || discarded_section (sec))
9082 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9084 if (relstart == NULL)
9087 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9089 enum elf_ppc64_reloc_type r_type;
9090 unsigned long r_symndx;
9092 struct elf_link_hash_entry *h;
9095 r_type = ELF64_R_TYPE (rel->r_info);
9102 case R_PPC64_TOC16_LO:
9103 case R_PPC64_TOC16_HI:
9104 case R_PPC64_TOC16_HA:
9105 case R_PPC64_TOC16_DS:
9106 case R_PPC64_TOC16_LO_DS:
9107 case R_PPC64_ADDR64:
9111 r_symndx = ELF64_R_SYM (rel->r_info);
9112 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9120 val = h->root.u.def.value;
9123 val = sym->st_value;
9125 local_toc_syms = TRUE;
9128 val += rel->r_addend;
9130 if (val > toc->rawsize)
9132 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9134 else if ((skip[val >> 3] & can_optimize) != 0)
9136 Elf_Internal_Rela *tocrel
9137 = toc_relocs + (skip[val >> 3] >> 2);
9138 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9142 case R_PPC64_TOC16_HA:
9143 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9146 case R_PPC64_TOC16_LO_DS:
9147 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9151 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9153 info->callbacks->einfo
9154 (_("%P: %H: %s references "
9155 "optimized away TOC entry\n"),
9156 ibfd, sec, rel->r_offset,
9157 ppc64_elf_howto_table[r_type]->name);
9158 bfd_set_error (bfd_error_bad_value);
9161 rel->r_addend = tocrel->r_addend;
9162 elf_section_data (sec)->relocs = relstart;
9166 if (h != NULL || sym->st_value != 0)
9169 rel->r_addend -= skip[val >> 3];
9170 elf_section_data (sec)->relocs = relstart;
9173 if (elf_section_data (sec)->relocs != relstart)
9177 /* We shouldn't have local or global symbols defined in the TOC,
9178 but handle them anyway. */
9179 if (local_syms != NULL)
9180 for (sym = local_syms;
9181 sym < local_syms + symtab_hdr->sh_info;
9183 if (sym->st_value != 0
9184 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9188 if (sym->st_value > toc->rawsize)
9189 i = toc->rawsize >> 3;
9191 i = sym->st_value >> 3;
9193 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9196 (*_bfd_error_handler)
9197 (_("%s defined on removed toc entry"),
9198 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9201 while ((skip[i] & (ref_from_discarded | can_optimize)));
9202 sym->st_value = (bfd_vma) i << 3;
9205 sym->st_value -= skip[i];
9206 symtab_hdr->contents = (unsigned char *) local_syms;
9209 /* Adjust any global syms defined in this toc input section. */
9210 if (toc_inf.global_toc_syms)
9213 toc_inf.skip = skip;
9214 toc_inf.global_toc_syms = FALSE;
9215 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9219 if (toc->reloc_count != 0)
9221 Elf_Internal_Shdr *rel_hdr;
9222 Elf_Internal_Rela *wrel;
9225 /* Remove unused toc relocs, and adjust those we keep. */
9226 if (toc_relocs == NULL)
9227 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9229 if (toc_relocs == NULL)
9233 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9234 if ((skip[rel->r_offset >> 3]
9235 & (ref_from_discarded | can_optimize)) == 0)
9237 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9238 wrel->r_info = rel->r_info;
9239 wrel->r_addend = rel->r_addend;
9242 else if (!dec_dynrel_count (rel->r_info, toc, info,
9243 &local_syms, NULL, NULL))
9246 elf_section_data (toc)->relocs = toc_relocs;
9247 toc->reloc_count = wrel - toc_relocs;
9248 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9249 sz = rel_hdr->sh_entsize;
9250 rel_hdr->sh_size = toc->reloc_count * sz;
9253 else if (toc_relocs != NULL
9254 && elf_section_data (toc)->relocs != toc_relocs)
9257 if (local_syms != NULL
9258 && symtab_hdr->contents != (unsigned char *) local_syms)
9260 if (!info->keep_memory)
9263 symtab_hdr->contents = (unsigned char *) local_syms;
9271 /* Return true iff input section I references the TOC using
9272 instructions limited to +/-32k offsets. */
9275 ppc64_elf_has_small_toc_reloc (asection *i)
9277 return (is_ppc64_elf (i->owner)
9278 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9281 /* Allocate space for one GOT entry. */
9284 allocate_got (struct elf_link_hash_entry *h,
9285 struct bfd_link_info *info,
9286 struct got_entry *gent)
9288 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9290 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9291 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9293 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9294 ? 2 : 1) * sizeof (Elf64_External_Rela);
9295 asection *got = ppc64_elf_tdata (gent->owner)->got;
9297 gent->got.offset = got->size;
9298 got->size += entsize;
9300 dyn = htab->elf.dynamic_sections_created;
9301 if (h->type == STT_GNU_IFUNC)
9303 htab->elf.irelplt->size += rentsize;
9304 htab->got_reli_size += rentsize;
9306 else if ((info->shared
9307 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9308 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9309 || h->root.type != bfd_link_hash_undefweak))
9311 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9312 relgot->size += rentsize;
9316 /* This function merges got entries in the same toc group. */
9319 merge_got_entries (struct got_entry **pent)
9321 struct got_entry *ent, *ent2;
9323 for (ent = *pent; ent != NULL; ent = ent->next)
9324 if (!ent->is_indirect)
9325 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9326 if (!ent2->is_indirect
9327 && ent2->addend == ent->addend
9328 && ent2->tls_type == ent->tls_type
9329 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9331 ent2->is_indirect = TRUE;
9332 ent2->got.ent = ent;
9336 /* Allocate space in .plt, .got and associated reloc sections for
9340 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9342 struct bfd_link_info *info;
9343 struct ppc_link_hash_table *htab;
9345 struct ppc_link_hash_entry *eh;
9346 struct elf_dyn_relocs *p;
9347 struct got_entry **pgent, *gent;
9349 if (h->root.type == bfd_link_hash_indirect)
9352 info = (struct bfd_link_info *) inf;
9353 htab = ppc_hash_table (info);
9357 if ((htab->elf.dynamic_sections_created
9359 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9360 || h->type == STT_GNU_IFUNC)
9362 struct plt_entry *pent;
9363 bfd_boolean doneone = FALSE;
9364 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9365 if (pent->plt.refcount > 0)
9367 if (!htab->elf.dynamic_sections_created
9368 || h->dynindx == -1)
9371 pent->plt.offset = s->size;
9372 s->size += PLT_ENTRY_SIZE (htab);
9373 s = htab->elf.irelplt;
9377 /* If this is the first .plt entry, make room for the special
9381 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9383 pent->plt.offset = s->size;
9385 /* Make room for this entry. */
9386 s->size += PLT_ENTRY_SIZE (htab);
9388 /* Make room for the .glink code. */
9391 s->size += GLINK_CALL_STUB_SIZE;
9394 /* We need bigger stubs past index 32767. */
9395 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9402 /* We also need to make an entry in the .rela.plt section. */
9403 s = htab->elf.srelplt;
9405 s->size += sizeof (Elf64_External_Rela);
9409 pent->plt.offset = (bfd_vma) -1;
9412 h->plt.plist = NULL;
9418 h->plt.plist = NULL;
9422 eh = (struct ppc_link_hash_entry *) h;
9423 /* Run through the TLS GD got entries first if we're changing them
9425 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9426 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9427 if (gent->got.refcount > 0
9428 && (gent->tls_type & TLS_GD) != 0)
9430 /* This was a GD entry that has been converted to TPREL. If
9431 there happens to be a TPREL entry we can use that one. */
9432 struct got_entry *ent;
9433 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9434 if (ent->got.refcount > 0
9435 && (ent->tls_type & TLS_TPREL) != 0
9436 && ent->addend == gent->addend
9437 && ent->owner == gent->owner)
9439 gent->got.refcount = 0;
9443 /* If not, then we'll be using our own TPREL entry. */
9444 if (gent->got.refcount != 0)
9445 gent->tls_type = TLS_TLS | TLS_TPREL;
9448 /* Remove any list entry that won't generate a word in the GOT before
9449 we call merge_got_entries. Otherwise we risk merging to empty
9451 pgent = &h->got.glist;
9452 while ((gent = *pgent) != NULL)
9453 if (gent->got.refcount > 0)
9455 if ((gent->tls_type & TLS_LD) != 0
9458 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9459 *pgent = gent->next;
9462 pgent = &gent->next;
9465 *pgent = gent->next;
9467 if (!htab->do_multi_toc)
9468 merge_got_entries (&h->got.glist);
9470 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9471 if (!gent->is_indirect)
9473 /* Make sure this symbol is output as a dynamic symbol.
9474 Undefined weak syms won't yet be marked as dynamic,
9475 nor will all TLS symbols. */
9476 if (h->dynindx == -1
9478 && h->type != STT_GNU_IFUNC
9479 && htab->elf.dynamic_sections_created)
9481 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9485 if (!is_ppc64_elf (gent->owner))
9488 allocate_got (h, info, gent);
9491 if (eh->dyn_relocs == NULL
9492 || (!htab->elf.dynamic_sections_created
9493 && h->type != STT_GNU_IFUNC))
9496 /* In the shared -Bsymbolic case, discard space allocated for
9497 dynamic pc-relative relocs against symbols which turn out to be
9498 defined in regular objects. For the normal shared case, discard
9499 space for relocs that have become local due to symbol visibility
9504 /* Relocs that use pc_count are those that appear on a call insn,
9505 or certain REL relocs (see must_be_dyn_reloc) that can be
9506 generated via assembly. We want calls to protected symbols to
9507 resolve directly to the function rather than going via the plt.
9508 If people want function pointer comparisons to work as expected
9509 then they should avoid writing weird assembly. */
9510 if (SYMBOL_CALLS_LOCAL (info, h))
9512 struct elf_dyn_relocs **pp;
9514 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9516 p->count -= p->pc_count;
9525 /* Also discard relocs on undefined weak syms with non-default
9527 if (eh->dyn_relocs != NULL
9528 && h->root.type == bfd_link_hash_undefweak)
9530 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9531 eh->dyn_relocs = NULL;
9533 /* Make sure this symbol is output as a dynamic symbol.
9534 Undefined weak syms won't yet be marked as dynamic. */
9535 else if (h->dynindx == -1
9536 && !h->forced_local)
9538 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9543 else if (h->type == STT_GNU_IFUNC)
9545 if (!h->non_got_ref)
9546 eh->dyn_relocs = NULL;
9548 else if (ELIMINATE_COPY_RELOCS)
9550 /* For the non-shared case, discard space for relocs against
9551 symbols which turn out to need copy relocs or are not
9557 /* Make sure this symbol is output as a dynamic symbol.
9558 Undefined weak syms won't yet be marked as dynamic. */
9559 if (h->dynindx == -1
9560 && !h->forced_local)
9562 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9566 /* If that succeeded, we know we'll be keeping all the
9568 if (h->dynindx != -1)
9572 eh->dyn_relocs = NULL;
9577 /* Finally, allocate space. */
9578 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9580 asection *sreloc = elf_section_data (p->sec)->sreloc;
9581 if (eh->elf.type == STT_GNU_IFUNC)
9582 sreloc = htab->elf.irelplt;
9583 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9589 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9590 to set up space for global entry stubs. These are put in glink,
9591 after the branch table. */
9594 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9596 struct bfd_link_info *info;
9597 struct ppc_link_hash_table *htab;
9598 struct plt_entry *pent;
9601 if (h->root.type == bfd_link_hash_indirect)
9604 if (!h->pointer_equality_needed)
9611 htab = ppc_hash_table (info);
9616 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9617 if (pent->plt.offset != (bfd_vma) -1
9618 && pent->addend == 0)
9620 /* For ELFv2, if this symbol is not defined in a regular file
9621 and we are not generating a shared library or pie, then we
9622 need to define the symbol in the executable on a call stub.
9623 This is to avoid text relocations. */
9624 s->size = (s->size + 15) & -16;
9625 h->root.u.def.section = s;
9626 h->root.u.def.value = s->size;
9633 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9634 read-only sections. */
9637 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9639 if (h->root.type == bfd_link_hash_indirect)
9642 if (readonly_dynrelocs (h))
9644 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9646 /* Not an error, just cut short the traversal. */
9652 /* Set the sizes of the dynamic sections. */
9655 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9656 struct bfd_link_info *info)
9658 struct ppc_link_hash_table *htab;
9663 struct got_entry *first_tlsld;
9665 htab = ppc_hash_table (info);
9669 dynobj = htab->elf.dynobj;
9673 if (htab->elf.dynamic_sections_created)
9675 /* Set the contents of the .interp section to the interpreter. */
9676 if (info->executable)
9678 s = bfd_get_linker_section (dynobj, ".interp");
9681 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9682 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9686 /* Set up .got offsets for local syms, and space for local dynamic
9688 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9690 struct got_entry **lgot_ents;
9691 struct got_entry **end_lgot_ents;
9692 struct plt_entry **local_plt;
9693 struct plt_entry **end_local_plt;
9694 unsigned char *lgot_masks;
9695 bfd_size_type locsymcount;
9696 Elf_Internal_Shdr *symtab_hdr;
9698 if (!is_ppc64_elf (ibfd))
9701 for (s = ibfd->sections; s != NULL; s = s->next)
9703 struct ppc_dyn_relocs *p;
9705 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9707 if (!bfd_is_abs_section (p->sec)
9708 && bfd_is_abs_section (p->sec->output_section))
9710 /* Input section has been discarded, either because
9711 it is a copy of a linkonce section or due to
9712 linker script /DISCARD/, so we'll be discarding
9715 else if (p->count != 0)
9717 asection *srel = elf_section_data (p->sec)->sreloc;
9719 srel = htab->elf.irelplt;
9720 srel->size += p->count * sizeof (Elf64_External_Rela);
9721 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9722 info->flags |= DF_TEXTREL;
9727 lgot_ents = elf_local_got_ents (ibfd);
9731 symtab_hdr = &elf_symtab_hdr (ibfd);
9732 locsymcount = symtab_hdr->sh_info;
9733 end_lgot_ents = lgot_ents + locsymcount;
9734 local_plt = (struct plt_entry **) end_lgot_ents;
9735 end_local_plt = local_plt + locsymcount;
9736 lgot_masks = (unsigned char *) end_local_plt;
9737 s = ppc64_elf_tdata (ibfd)->got;
9738 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9740 struct got_entry **pent, *ent;
9743 while ((ent = *pent) != NULL)
9744 if (ent->got.refcount > 0)
9746 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9748 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9753 unsigned int ent_size = 8;
9754 unsigned int rel_size = sizeof (Elf64_External_Rela);
9756 ent->got.offset = s->size;
9757 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9762 s->size += ent_size;
9763 if ((*lgot_masks & PLT_IFUNC) != 0)
9765 htab->elf.irelplt->size += rel_size;
9766 htab->got_reli_size += rel_size;
9768 else if (info->shared)
9770 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9771 srel->size += rel_size;
9780 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9781 for (; local_plt < end_local_plt; ++local_plt)
9783 struct plt_entry *ent;
9785 for (ent = *local_plt; ent != NULL; ent = ent->next)
9786 if (ent->plt.refcount > 0)
9789 ent->plt.offset = s->size;
9790 s->size += PLT_ENTRY_SIZE (htab);
9792 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9795 ent->plt.offset = (bfd_vma) -1;
9799 /* Allocate global sym .plt and .got entries, and space for global
9800 sym dynamic relocs. */
9801 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9802 /* Stash the end of glink branch table. */
9803 if (htab->glink != NULL)
9804 htab->glink->rawsize = htab->glink->size;
9806 if (!htab->opd_abi && !info->shared)
9807 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9810 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9812 struct got_entry *ent;
9814 if (!is_ppc64_elf (ibfd))
9817 ent = ppc64_tlsld_got (ibfd);
9818 if (ent->got.refcount > 0)
9820 if (!htab->do_multi_toc && first_tlsld != NULL)
9822 ent->is_indirect = TRUE;
9823 ent->got.ent = first_tlsld;
9827 if (first_tlsld == NULL)
9829 s = ppc64_elf_tdata (ibfd)->got;
9830 ent->got.offset = s->size;
9835 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9836 srel->size += sizeof (Elf64_External_Rela);
9841 ent->got.offset = (bfd_vma) -1;
9844 /* We now have determined the sizes of the various dynamic sections.
9845 Allocate memory for them. */
9847 for (s = dynobj->sections; s != NULL; s = s->next)
9849 if ((s->flags & SEC_LINKER_CREATED) == 0)
9852 if (s == htab->brlt || s == htab->relbrlt)
9853 /* These haven't been allocated yet; don't strip. */
9855 else if (s == htab->elf.sgot
9856 || s == htab->elf.splt
9857 || s == htab->elf.iplt
9859 || s == htab->dynbss)
9861 /* Strip this section if we don't need it; see the
9864 else if (s == htab->glink_eh_frame)
9866 if (!bfd_is_abs_section (s->output_section))
9867 /* Not sized yet. */
9870 else if (CONST_STRNEQ (s->name, ".rela"))
9874 if (s != htab->elf.srelplt)
9877 /* We use the reloc_count field as a counter if we need
9878 to copy relocs into the output file. */
9884 /* It's not one of our sections, so don't allocate space. */
9890 /* If we don't need this section, strip it from the
9891 output file. This is mostly to handle .rela.bss and
9892 .rela.plt. We must create both sections in
9893 create_dynamic_sections, because they must be created
9894 before the linker maps input sections to output
9895 sections. The linker does that before
9896 adjust_dynamic_symbol is called, and it is that
9897 function which decides whether anything needs to go
9898 into these sections. */
9899 s->flags |= SEC_EXCLUDE;
9903 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9906 /* Allocate memory for the section contents. We use bfd_zalloc
9907 here in case unused entries are not reclaimed before the
9908 section's contents are written out. This should not happen,
9909 but this way if it does we get a R_PPC64_NONE reloc in .rela
9910 sections instead of garbage.
9911 We also rely on the section contents being zero when writing
9913 s->contents = bfd_zalloc (dynobj, s->size);
9914 if (s->contents == NULL)
9918 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9920 if (!is_ppc64_elf (ibfd))
9923 s = ppc64_elf_tdata (ibfd)->got;
9924 if (s != NULL && s != htab->elf.sgot)
9927 s->flags |= SEC_EXCLUDE;
9930 s->contents = bfd_zalloc (ibfd, s->size);
9931 if (s->contents == NULL)
9935 s = ppc64_elf_tdata (ibfd)->relgot;
9939 s->flags |= SEC_EXCLUDE;
9942 s->contents = bfd_zalloc (ibfd, s->size);
9943 if (s->contents == NULL)
9951 if (htab->elf.dynamic_sections_created)
9953 bfd_boolean tls_opt;
9955 /* Add some entries to the .dynamic section. We fill in the
9956 values later, in ppc64_elf_finish_dynamic_sections, but we
9957 must add the entries now so that we get the correct size for
9958 the .dynamic section. The DT_DEBUG entry is filled in by the
9959 dynamic linker and used by the debugger. */
9960 #define add_dynamic_entry(TAG, VAL) \
9961 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9963 if (info->executable)
9965 if (!add_dynamic_entry (DT_DEBUG, 0))
9969 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9971 if (!add_dynamic_entry (DT_PLTGOT, 0)
9972 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9973 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9974 || !add_dynamic_entry (DT_JMPREL, 0)
9975 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9979 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9981 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9982 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9986 tls_opt = (!htab->params->no_tls_get_addr_opt
9987 && htab->tls_get_addr_fd != NULL
9988 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9989 if (tls_opt || !htab->opd_abi)
9991 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9997 if (!add_dynamic_entry (DT_RELA, 0)
9998 || !add_dynamic_entry (DT_RELASZ, 0)
9999 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10002 /* If any dynamic relocs apply to a read-only section,
10003 then we need a DT_TEXTREL entry. */
10004 if ((info->flags & DF_TEXTREL) == 0)
10005 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10007 if ((info->flags & DF_TEXTREL) != 0)
10009 if (!add_dynamic_entry (DT_TEXTREL, 0))
10014 #undef add_dynamic_entry
10019 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10022 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10024 if (h->plt.plist != NULL
10026 && !h->pointer_equality_needed)
10029 return _bfd_elf_hash_symbol (h);
10032 /* Determine the type of stub needed, if any, for a call. */
10034 static inline enum ppc_stub_type
10035 ppc_type_of_stub (asection *input_sec,
10036 const Elf_Internal_Rela *rel,
10037 struct ppc_link_hash_entry **hash,
10038 struct plt_entry **plt_ent,
10039 bfd_vma destination,
10040 unsigned long local_off)
10042 struct ppc_link_hash_entry *h = *hash;
10044 bfd_vma branch_offset;
10045 bfd_vma max_branch_offset;
10046 enum elf_ppc64_reloc_type r_type;
10050 struct plt_entry *ent;
10051 struct ppc_link_hash_entry *fdh = h;
10053 && h->oh->is_func_descriptor)
10055 fdh = ppc_follow_link (h->oh);
10059 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10060 if (ent->addend == rel->r_addend
10061 && ent->plt.offset != (bfd_vma) -1)
10064 return ppc_stub_plt_call;
10067 /* Here, we know we don't have a plt entry. If we don't have a
10068 either a defined function descriptor or a defined entry symbol
10069 in a regular object file, then it is pointless trying to make
10070 any other type of stub. */
10071 if (!is_static_defined (&fdh->elf)
10072 && !is_static_defined (&h->elf))
10073 return ppc_stub_none;
10075 else if (elf_local_got_ents (input_sec->owner) != NULL)
10077 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10078 struct plt_entry **local_plt = (struct plt_entry **)
10079 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10080 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10082 if (local_plt[r_symndx] != NULL)
10084 struct plt_entry *ent;
10086 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10087 if (ent->addend == rel->r_addend
10088 && ent->plt.offset != (bfd_vma) -1)
10091 return ppc_stub_plt_call;
10096 /* Determine where the call point is. */
10097 location = (input_sec->output_offset
10098 + input_sec->output_section->vma
10101 branch_offset = destination - location;
10102 r_type = ELF64_R_TYPE (rel->r_info);
10104 /* Determine if a long branch stub is needed. */
10105 max_branch_offset = 1 << 25;
10106 if (r_type != R_PPC64_REL24)
10107 max_branch_offset = 1 << 15;
10109 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10110 /* We need a stub. Figure out whether a long_branch or plt_branch
10111 is needed later. */
10112 return ppc_stub_long_branch;
10114 return ppc_stub_none;
10117 /* With power7 weakly ordered memory model, it is possible for ld.so
10118 to update a plt entry in one thread and have another thread see a
10119 stale zero toc entry. To avoid this we need some sort of acquire
10120 barrier in the call stub. One solution is to make the load of the
10121 toc word seem to appear to depend on the load of the function entry
10122 word. Another solution is to test for r2 being zero, and branch to
10123 the appropriate glink entry if so.
10125 . fake dep barrier compare
10126 . ld 12,xxx(2) ld 12,xxx(2)
10127 . mtctr 12 mtctr 12
10128 . xor 11,12,12 ld 2,xxx+8(2)
10129 . add 2,2,11 cmpldi 2,0
10130 . ld 2,xxx+8(2) bnectr+
10131 . bctr b <glink_entry>
10133 The solution involving the compare turns out to be faster, so
10134 that's what we use unless the branch won't reach. */
10136 #define ALWAYS_USE_FAKE_DEP 0
10137 #define ALWAYS_EMIT_R2SAVE 0
10139 #define PPC_LO(v) ((v) & 0xffff)
10140 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10141 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10143 static inline unsigned int
10144 plt_stub_size (struct ppc_link_hash_table *htab,
10145 struct ppc_stub_hash_entry *stub_entry,
10148 unsigned size = 12;
10150 if (ALWAYS_EMIT_R2SAVE
10151 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10153 if (PPC_HA (off) != 0)
10158 if (htab->params->plt_static_chain)
10160 if (htab->params->plt_thread_safe)
10162 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10165 if (stub_entry->h != NULL
10166 && (stub_entry->h == htab->tls_get_addr_fd
10167 || stub_entry->h == htab->tls_get_addr)
10168 && !htab->params->no_tls_get_addr_opt)
10173 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10174 then return the padding needed to do so. */
10175 static inline unsigned int
10176 plt_stub_pad (struct ppc_link_hash_table *htab,
10177 struct ppc_stub_hash_entry *stub_entry,
10180 int stub_align = 1 << htab->params->plt_stub_align;
10181 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10182 bfd_vma stub_off = stub_entry->stub_sec->size;
10184 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10185 > (stub_size & -stub_align))
10186 return stub_align - (stub_off & (stub_align - 1));
10190 /* Build a .plt call stub. */
10192 static inline bfd_byte *
10193 build_plt_stub (struct ppc_link_hash_table *htab,
10194 struct ppc_stub_hash_entry *stub_entry,
10195 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10197 bfd *obfd = htab->params->stub_bfd;
10198 bfd_boolean plt_load_toc = htab->opd_abi;
10199 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10200 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10201 bfd_boolean use_fake_dep = plt_thread_safe;
10202 bfd_vma cmp_branch_off = 0;
10204 if (!ALWAYS_USE_FAKE_DEP
10207 && !(stub_entry->h != NULL
10208 && (stub_entry->h == htab->tls_get_addr_fd
10209 || stub_entry->h == htab->tls_get_addr)
10210 && !htab->params->no_tls_get_addr_opt))
10212 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10213 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10214 / PLT_ENTRY_SIZE (htab));
10215 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10218 if (pltindex > 32768)
10219 glinkoff += (pltindex - 32768) * 4;
10221 + htab->glink->output_offset
10222 + htab->glink->output_section->vma);
10223 from = (p - stub_entry->stub_sec->contents
10224 + 4 * (ALWAYS_EMIT_R2SAVE
10225 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10226 + 4 * (PPC_HA (offset) != 0)
10227 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10228 != PPC_HA (offset))
10229 + 4 * (plt_static_chain != 0)
10231 + stub_entry->stub_sec->output_offset
10232 + stub_entry->stub_sec->output_section->vma);
10233 cmp_branch_off = to - from;
10234 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10237 if (PPC_HA (offset) != 0)
10241 if (ALWAYS_EMIT_R2SAVE
10242 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10243 r[0].r_offset += 4;
10244 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10245 r[1].r_offset = r[0].r_offset + 4;
10246 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10247 r[1].r_addend = r[0].r_addend;
10250 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10252 r[2].r_offset = r[1].r_offset + 4;
10253 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10254 r[2].r_addend = r[0].r_addend;
10258 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10259 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10260 r[2].r_addend = r[0].r_addend + 8;
10261 if (plt_static_chain)
10263 r[3].r_offset = r[2].r_offset + 4;
10264 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10265 r[3].r_addend = r[0].r_addend + 16;
10270 if (ALWAYS_EMIT_R2SAVE
10271 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10272 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10275 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10276 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10280 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10281 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10284 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10286 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10289 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10294 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10295 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10297 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10298 if (plt_static_chain)
10299 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10306 if (ALWAYS_EMIT_R2SAVE
10307 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10308 r[0].r_offset += 4;
10309 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10312 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10314 r[1].r_offset = r[0].r_offset + 4;
10315 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10316 r[1].r_addend = r[0].r_addend;
10320 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10321 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10322 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10323 if (plt_static_chain)
10325 r[2].r_offset = r[1].r_offset + 4;
10326 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10327 r[2].r_addend = r[0].r_addend + 8;
10332 if (ALWAYS_EMIT_R2SAVE
10333 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10334 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10335 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10337 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10339 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10342 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10347 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10348 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10350 if (plt_static_chain)
10351 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10352 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10355 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10357 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10358 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10359 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10362 bfd_put_32 (obfd, BCTR, p), p += 4;
10366 /* Build a special .plt call stub for __tls_get_addr. */
10368 #define LD_R11_0R3 0xe9630000
10369 #define LD_R12_0R3 0xe9830000
10370 #define MR_R0_R3 0x7c601b78
10371 #define CMPDI_R11_0 0x2c2b0000
10372 #define ADD_R3_R12_R13 0x7c6c6a14
10373 #define BEQLR 0x4d820020
10374 #define MR_R3_R0 0x7c030378
10375 #define STD_R11_0R1 0xf9610000
10376 #define BCTRL 0x4e800421
10377 #define LD_R11_0R1 0xe9610000
10378 #define MTLR_R11 0x7d6803a6
10380 static inline bfd_byte *
10381 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10382 struct ppc_stub_hash_entry *stub_entry,
10383 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10385 bfd *obfd = htab->params->stub_bfd;
10387 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10388 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10389 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10390 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10391 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10392 bfd_put_32 (obfd, BEQLR, p), p += 4;
10393 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10394 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10395 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10398 r[0].r_offset += 9 * 4;
10399 p = build_plt_stub (htab, stub_entry, p, offset, r);
10400 bfd_put_32 (obfd, BCTRL, p - 4);
10402 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10403 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10404 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10405 bfd_put_32 (obfd, BLR, p), p += 4;
10410 static Elf_Internal_Rela *
10411 get_relocs (asection *sec, int count)
10413 Elf_Internal_Rela *relocs;
10414 struct bfd_elf_section_data *elfsec_data;
10416 elfsec_data = elf_section_data (sec);
10417 relocs = elfsec_data->relocs;
10418 if (relocs == NULL)
10420 bfd_size_type relsize;
10421 relsize = sec->reloc_count * sizeof (*relocs);
10422 relocs = bfd_alloc (sec->owner, relsize);
10423 if (relocs == NULL)
10425 elfsec_data->relocs = relocs;
10426 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10427 sizeof (Elf_Internal_Shdr));
10428 if (elfsec_data->rela.hdr == NULL)
10430 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10431 * sizeof (Elf64_External_Rela));
10432 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10433 sec->reloc_count = 0;
10435 relocs += sec->reloc_count;
10436 sec->reloc_count += count;
10441 get_r2off (struct bfd_link_info *info,
10442 struct ppc_stub_hash_entry *stub_entry)
10444 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10445 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10449 /* Support linking -R objects. Get the toc pointer from the
10452 if (!htab->opd_abi)
10454 asection *opd = stub_entry->h->elf.root.u.def.section;
10455 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10457 if (strcmp (opd->name, ".opd") != 0
10458 || opd->reloc_count != 0)
10460 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10461 stub_entry->h->elf.root.root.string);
10462 bfd_set_error (bfd_error_bad_value);
10465 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10467 r2off = bfd_get_64 (opd->owner, buf);
10468 r2off -= elf_gp (info->output_bfd);
10470 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10475 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10477 struct ppc_stub_hash_entry *stub_entry;
10478 struct ppc_branch_hash_entry *br_entry;
10479 struct bfd_link_info *info;
10480 struct ppc_link_hash_table *htab;
10485 Elf_Internal_Rela *r;
10488 /* Massage our args to the form they really have. */
10489 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10492 htab = ppc_hash_table (info);
10496 /* Make a note of the offset within the stubs for this entry. */
10497 stub_entry->stub_offset = stub_entry->stub_sec->size;
10498 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10500 htab->stub_count[stub_entry->stub_type - 1] += 1;
10501 switch (stub_entry->stub_type)
10503 case ppc_stub_long_branch:
10504 case ppc_stub_long_branch_r2off:
10505 /* Branches are relative. This is where we are going to. */
10506 dest = (stub_entry->target_value
10507 + stub_entry->target_section->output_offset
10508 + stub_entry->target_section->output_section->vma);
10509 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10512 /* And this is where we are coming from. */
10513 off -= (stub_entry->stub_offset
10514 + stub_entry->stub_sec->output_offset
10515 + stub_entry->stub_sec->output_section->vma);
10518 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10520 bfd_vma r2off = get_r2off (info, stub_entry);
10524 htab->stub_error = TRUE;
10527 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10530 if (PPC_HA (r2off) != 0)
10533 bfd_put_32 (htab->params->stub_bfd,
10534 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10537 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10541 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10543 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10545 info->callbacks->einfo
10546 (_("%P: long branch stub `%s' offset overflow\n"),
10547 stub_entry->root.string);
10548 htab->stub_error = TRUE;
10552 if (info->emitrelocations)
10554 r = get_relocs (stub_entry->stub_sec, 1);
10557 r->r_offset = loc - stub_entry->stub_sec->contents;
10558 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10559 r->r_addend = dest;
10560 if (stub_entry->h != NULL)
10562 struct elf_link_hash_entry **hashes;
10563 unsigned long symndx;
10564 struct ppc_link_hash_entry *h;
10566 hashes = elf_sym_hashes (htab->params->stub_bfd);
10567 if (hashes == NULL)
10569 bfd_size_type hsize;
10571 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10572 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10573 if (hashes == NULL)
10575 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10576 htab->stub_globals = 1;
10578 symndx = htab->stub_globals++;
10580 hashes[symndx] = &h->elf;
10581 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10582 if (h->oh != NULL && h->oh->is_func)
10583 h = ppc_follow_link (h->oh);
10584 if (h->elf.root.u.def.section != stub_entry->target_section)
10585 /* H is an opd symbol. The addend must be zero. */
10589 off = (h->elf.root.u.def.value
10590 + h->elf.root.u.def.section->output_offset
10591 + h->elf.root.u.def.section->output_section->vma);
10592 r->r_addend -= off;
10598 case ppc_stub_plt_branch:
10599 case ppc_stub_plt_branch_r2off:
10600 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10601 stub_entry->root.string + 9,
10603 if (br_entry == NULL)
10605 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10606 stub_entry->root.string);
10607 htab->stub_error = TRUE;
10611 dest = (stub_entry->target_value
10612 + stub_entry->target_section->output_offset
10613 + stub_entry->target_section->output_section->vma);
10614 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10615 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10617 bfd_put_64 (htab->brlt->owner, dest,
10618 htab->brlt->contents + br_entry->offset);
10620 if (br_entry->iter == htab->stub_iteration)
10622 br_entry->iter = 0;
10624 if (htab->relbrlt != NULL)
10626 /* Create a reloc for the branch lookup table entry. */
10627 Elf_Internal_Rela rela;
10630 rela.r_offset = (br_entry->offset
10631 + htab->brlt->output_offset
10632 + htab->brlt->output_section->vma);
10633 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10634 rela.r_addend = dest;
10636 rl = htab->relbrlt->contents;
10637 rl += (htab->relbrlt->reloc_count++
10638 * sizeof (Elf64_External_Rela));
10639 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10641 else if (info->emitrelocations)
10643 r = get_relocs (htab->brlt, 1);
10646 /* brlt, being SEC_LINKER_CREATED does not go through the
10647 normal reloc processing. Symbols and offsets are not
10648 translated from input file to output file form, so
10649 set up the offset per the output file. */
10650 r->r_offset = (br_entry->offset
10651 + htab->brlt->output_offset
10652 + htab->brlt->output_section->vma);
10653 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10654 r->r_addend = dest;
10658 dest = (br_entry->offset
10659 + htab->brlt->output_offset
10660 + htab->brlt->output_section->vma);
10663 - elf_gp (htab->brlt->output_section->owner)
10664 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10666 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10668 info->callbacks->einfo
10669 (_("%P: linkage table error against `%T'\n"),
10670 stub_entry->root.string);
10671 bfd_set_error (bfd_error_bad_value);
10672 htab->stub_error = TRUE;
10676 if (info->emitrelocations)
10678 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10681 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10682 if (bfd_big_endian (info->output_bfd))
10683 r[0].r_offset += 2;
10684 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10685 r[0].r_offset += 4;
10686 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10687 r[0].r_addend = dest;
10688 if (PPC_HA (off) != 0)
10690 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10691 r[1].r_offset = r[0].r_offset + 4;
10692 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10693 r[1].r_addend = r[0].r_addend;
10697 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10699 if (PPC_HA (off) != 0)
10702 bfd_put_32 (htab->params->stub_bfd,
10703 ADDIS_R12_R2 | PPC_HA (off), loc);
10705 bfd_put_32 (htab->params->stub_bfd,
10706 LD_R12_0R12 | PPC_LO (off), loc);
10711 bfd_put_32 (htab->params->stub_bfd,
10712 LD_R12_0R2 | PPC_LO (off), loc);
10717 bfd_vma r2off = get_r2off (info, stub_entry);
10719 if (r2off == 0 && htab->opd_abi)
10721 htab->stub_error = TRUE;
10725 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10728 if (PPC_HA (off) != 0)
10731 bfd_put_32 (htab->params->stub_bfd,
10732 ADDIS_R12_R2 | PPC_HA (off), loc);
10734 bfd_put_32 (htab->params->stub_bfd,
10735 LD_R12_0R12 | PPC_LO (off), loc);
10738 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10740 if (PPC_HA (r2off) != 0)
10744 bfd_put_32 (htab->params->stub_bfd,
10745 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10747 if (PPC_LO (r2off) != 0)
10751 bfd_put_32 (htab->params->stub_bfd,
10752 ADDI_R2_R2 | PPC_LO (r2off), loc);
10756 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10758 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10761 case ppc_stub_plt_call:
10762 case ppc_stub_plt_call_r2save:
10763 if (stub_entry->h != NULL
10764 && stub_entry->h->is_func_descriptor
10765 && stub_entry->h->oh != NULL)
10767 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10769 /* If the old-ABI "dot-symbol" is undefined make it weak so
10770 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10771 FIXME: We used to define the symbol on one of the call
10772 stubs instead, which is why we test symbol section id
10773 against htab->top_id in various places. Likely all
10774 these checks could now disappear. */
10775 if (fh->elf.root.type == bfd_link_hash_undefined)
10776 fh->elf.root.type = bfd_link_hash_undefweak;
10777 /* Stop undo_symbol_twiddle changing it back to undefined. */
10778 fh->was_undefined = 0;
10781 /* Now build the stub. */
10782 dest = stub_entry->plt_ent->plt.offset & ~1;
10783 if (dest >= (bfd_vma) -2)
10786 plt = htab->elf.splt;
10787 if (!htab->elf.dynamic_sections_created
10788 || stub_entry->h == NULL
10789 || stub_entry->h->elf.dynindx == -1)
10790 plt = htab->elf.iplt;
10792 dest += plt->output_offset + plt->output_section->vma;
10794 if (stub_entry->h == NULL
10795 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10797 Elf_Internal_Rela rela;
10800 rela.r_offset = dest;
10802 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10804 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10805 rela.r_addend = (stub_entry->target_value
10806 + stub_entry->target_section->output_offset
10807 + stub_entry->target_section->output_section->vma);
10809 rl = (htab->elf.irelplt->contents
10810 + (htab->elf.irelplt->reloc_count++
10811 * sizeof (Elf64_External_Rela)));
10812 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10813 stub_entry->plt_ent->plt.offset |= 1;
10817 - elf_gp (plt->output_section->owner)
10818 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10820 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10822 info->callbacks->einfo
10823 (_("%P: linkage table error against `%T'\n"),
10824 stub_entry->h != NULL
10825 ? stub_entry->h->elf.root.root.string
10827 bfd_set_error (bfd_error_bad_value);
10828 htab->stub_error = TRUE;
10832 if (htab->params->plt_stub_align != 0)
10834 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10836 stub_entry->stub_sec->size += pad;
10837 stub_entry->stub_offset = stub_entry->stub_sec->size;
10842 if (info->emitrelocations)
10844 r = get_relocs (stub_entry->stub_sec,
10845 ((PPC_HA (off) != 0)
10847 ? 2 + (htab->params->plt_static_chain
10848 && PPC_HA (off + 16) == PPC_HA (off))
10852 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10853 if (bfd_big_endian (info->output_bfd))
10854 r[0].r_offset += 2;
10855 r[0].r_addend = dest;
10857 if (stub_entry->h != NULL
10858 && (stub_entry->h == htab->tls_get_addr_fd
10859 || stub_entry->h == htab->tls_get_addr)
10860 && !htab->params->no_tls_get_addr_opt)
10861 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10863 p = build_plt_stub (htab, stub_entry, loc, off, r);
10872 stub_entry->stub_sec->size += size;
10874 if (htab->params->emit_stub_syms)
10876 struct elf_link_hash_entry *h;
10879 const char *const stub_str[] = { "long_branch",
10880 "long_branch_r2off",
10882 "plt_branch_r2off",
10886 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10887 len2 = strlen (stub_entry->root.string);
10888 name = bfd_malloc (len1 + len2 + 2);
10891 memcpy (name, stub_entry->root.string, 9);
10892 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10893 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10894 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10897 if (h->root.type == bfd_link_hash_new)
10899 h->root.type = bfd_link_hash_defined;
10900 h->root.u.def.section = stub_entry->stub_sec;
10901 h->root.u.def.value = stub_entry->stub_offset;
10902 h->ref_regular = 1;
10903 h->def_regular = 1;
10904 h->ref_regular_nonweak = 1;
10905 h->forced_local = 1;
10913 /* As above, but don't actually build the stub. Just bump offset so
10914 we know stub section sizes, and select plt_branch stubs where
10915 long_branch stubs won't do. */
10918 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10920 struct ppc_stub_hash_entry *stub_entry;
10921 struct bfd_link_info *info;
10922 struct ppc_link_hash_table *htab;
10926 /* Massage our args to the form they really have. */
10927 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10930 htab = ppc_hash_table (info);
10934 if (stub_entry->stub_type == ppc_stub_plt_call
10935 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10938 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10939 if (off >= (bfd_vma) -2)
10941 plt = htab->elf.splt;
10942 if (!htab->elf.dynamic_sections_created
10943 || stub_entry->h == NULL
10944 || stub_entry->h->elf.dynindx == -1)
10945 plt = htab->elf.iplt;
10946 off += (plt->output_offset
10947 + plt->output_section->vma
10948 - elf_gp (plt->output_section->owner)
10949 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10951 size = plt_stub_size (htab, stub_entry, off);
10952 if (htab->params->plt_stub_align)
10953 size += plt_stub_pad (htab, stub_entry, off);
10954 if (info->emitrelocations)
10956 stub_entry->stub_sec->reloc_count
10957 += ((PPC_HA (off) != 0)
10959 ? 2 + (htab->params->plt_static_chain
10960 && PPC_HA (off + 16) == PPC_HA (off))
10962 stub_entry->stub_sec->flags |= SEC_RELOC;
10967 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10970 bfd_vma local_off = 0;
10972 off = (stub_entry->target_value
10973 + stub_entry->target_section->output_offset
10974 + stub_entry->target_section->output_section->vma);
10975 off -= (stub_entry->stub_sec->size
10976 + stub_entry->stub_sec->output_offset
10977 + stub_entry->stub_sec->output_section->vma);
10979 /* Reset the stub type from the plt variant in case we now
10980 can reach with a shorter stub. */
10981 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10982 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10985 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10987 r2off = get_r2off (info, stub_entry);
10988 if (r2off == 0 && htab->opd_abi)
10990 htab->stub_error = TRUE;
10994 if (PPC_HA (r2off) != 0)
10999 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11001 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11002 Do the same for -R objects without function descriptors. */
11003 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11004 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11007 struct ppc_branch_hash_entry *br_entry;
11009 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11010 stub_entry->root.string + 9,
11012 if (br_entry == NULL)
11014 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11015 stub_entry->root.string);
11016 htab->stub_error = TRUE;
11020 if (br_entry->iter != htab->stub_iteration)
11022 br_entry->iter = htab->stub_iteration;
11023 br_entry->offset = htab->brlt->size;
11024 htab->brlt->size += 8;
11026 if (htab->relbrlt != NULL)
11027 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11028 else if (info->emitrelocations)
11030 htab->brlt->reloc_count += 1;
11031 htab->brlt->flags |= SEC_RELOC;
11035 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11036 off = (br_entry->offset
11037 + htab->brlt->output_offset
11038 + htab->brlt->output_section->vma
11039 - elf_gp (htab->brlt->output_section->owner)
11040 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11042 if (info->emitrelocations)
11044 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11045 stub_entry->stub_sec->flags |= SEC_RELOC;
11048 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11051 if (PPC_HA (off) != 0)
11057 if (PPC_HA (off) != 0)
11060 if (PPC_HA (r2off) != 0)
11062 if (PPC_LO (r2off) != 0)
11066 else if (info->emitrelocations)
11068 stub_entry->stub_sec->reloc_count += 1;
11069 stub_entry->stub_sec->flags |= SEC_RELOC;
11073 stub_entry->stub_sec->size += size;
11077 /* Set up various things so that we can make a list of input sections
11078 for each output section included in the link. Returns -1 on error,
11079 0 when no stubs will be needed, and 1 on success. */
11082 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11085 int top_id, top_index, id;
11087 asection **input_list;
11089 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11094 /* Find the top input section id. */
11095 for (input_bfd = info->input_bfds, top_id = 3;
11097 input_bfd = input_bfd->link.next)
11099 for (section = input_bfd->sections;
11101 section = section->next)
11103 if (top_id < section->id)
11104 top_id = section->id;
11108 htab->top_id = top_id;
11109 amt = sizeof (struct map_stub) * (top_id + 1);
11110 htab->stub_group = bfd_zmalloc (amt);
11111 if (htab->stub_group == NULL)
11114 /* Set toc_off for com, und, abs and ind sections. */
11115 for (id = 0; id < 3; id++)
11116 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11118 /* We can't use output_bfd->section_count here to find the top output
11119 section index as some sections may have been removed, and
11120 strip_excluded_output_sections doesn't renumber the indices. */
11121 for (section = info->output_bfd->sections, top_index = 0;
11123 section = section->next)
11125 if (top_index < section->index)
11126 top_index = section->index;
11129 htab->top_index = top_index;
11130 amt = sizeof (asection *) * (top_index + 1);
11131 input_list = bfd_zmalloc (amt);
11132 htab->input_list = input_list;
11133 if (input_list == NULL)
11139 /* Set up for first pass at multitoc partitioning. */
11142 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11144 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11146 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11147 htab->toc_bfd = NULL;
11148 htab->toc_first_sec = NULL;
11151 /* The linker repeatedly calls this function for each TOC input section
11152 and linker generated GOT section. Group input bfds such that the toc
11153 within a group is less than 64k in size. */
11156 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11158 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11159 bfd_vma addr, off, limit;
11164 if (!htab->second_toc_pass)
11166 /* Keep track of the first .toc or .got section for this input bfd. */
11167 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11171 htab->toc_bfd = isec->owner;
11172 htab->toc_first_sec = isec;
11175 addr = isec->output_offset + isec->output_section->vma;
11176 off = addr - htab->toc_curr;
11177 limit = 0x80008000;
11178 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11180 if (off + isec->size > limit)
11182 addr = (htab->toc_first_sec->output_offset
11183 + htab->toc_first_sec->output_section->vma);
11184 htab->toc_curr = addr;
11187 /* toc_curr is the base address of this toc group. Set elf_gp
11188 for the input section to be the offset relative to the
11189 output toc base plus 0x8000. Making the input elf_gp an
11190 offset allows us to move the toc as a whole without
11191 recalculating input elf_gp. */
11192 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11193 off += TOC_BASE_OFF;
11195 /* Die if someone uses a linker script that doesn't keep input
11196 file .toc and .got together. */
11198 && elf_gp (isec->owner) != 0
11199 && elf_gp (isec->owner) != off)
11202 elf_gp (isec->owner) = off;
11206 /* During the second pass toc_first_sec points to the start of
11207 a toc group, and toc_curr is used to track the old elf_gp.
11208 We use toc_bfd to ensure we only look at each bfd once. */
11209 if (htab->toc_bfd == isec->owner)
11211 htab->toc_bfd = isec->owner;
11213 if (htab->toc_first_sec == NULL
11214 || htab->toc_curr != elf_gp (isec->owner))
11216 htab->toc_curr = elf_gp (isec->owner);
11217 htab->toc_first_sec = isec;
11219 addr = (htab->toc_first_sec->output_offset
11220 + htab->toc_first_sec->output_section->vma);
11221 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11222 elf_gp (isec->owner) = off;
11227 /* Called via elf_link_hash_traverse to merge GOT entries for global
11231 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11233 if (h->root.type == bfd_link_hash_indirect)
11236 merge_got_entries (&h->got.glist);
11241 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11245 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11247 struct got_entry *gent;
11249 if (h->root.type == bfd_link_hash_indirect)
11252 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11253 if (!gent->is_indirect)
11254 allocate_got (h, (struct bfd_link_info *) inf, gent);
11258 /* Called on the first multitoc pass after the last call to
11259 ppc64_elf_next_toc_section. This function removes duplicate GOT
11263 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11265 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11266 struct bfd *ibfd, *ibfd2;
11267 bfd_boolean done_something;
11269 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11271 if (!htab->do_multi_toc)
11274 /* Merge global sym got entries within a toc group. */
11275 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11277 /* And tlsld_got. */
11278 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11280 struct got_entry *ent, *ent2;
11282 if (!is_ppc64_elf (ibfd))
11285 ent = ppc64_tlsld_got (ibfd);
11286 if (!ent->is_indirect
11287 && ent->got.offset != (bfd_vma) -1)
11289 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11291 if (!is_ppc64_elf (ibfd2))
11294 ent2 = ppc64_tlsld_got (ibfd2);
11295 if (!ent2->is_indirect
11296 && ent2->got.offset != (bfd_vma) -1
11297 && elf_gp (ibfd2) == elf_gp (ibfd))
11299 ent2->is_indirect = TRUE;
11300 ent2->got.ent = ent;
11306 /* Zap sizes of got sections. */
11307 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11308 htab->elf.irelplt->size -= htab->got_reli_size;
11309 htab->got_reli_size = 0;
11311 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11313 asection *got, *relgot;
11315 if (!is_ppc64_elf (ibfd))
11318 got = ppc64_elf_tdata (ibfd)->got;
11321 got->rawsize = got->size;
11323 relgot = ppc64_elf_tdata (ibfd)->relgot;
11324 relgot->rawsize = relgot->size;
11329 /* Now reallocate the got, local syms first. We don't need to
11330 allocate section contents again since we never increase size. */
11331 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11333 struct got_entry **lgot_ents;
11334 struct got_entry **end_lgot_ents;
11335 struct plt_entry **local_plt;
11336 struct plt_entry **end_local_plt;
11337 unsigned char *lgot_masks;
11338 bfd_size_type locsymcount;
11339 Elf_Internal_Shdr *symtab_hdr;
11342 if (!is_ppc64_elf (ibfd))
11345 lgot_ents = elf_local_got_ents (ibfd);
11349 symtab_hdr = &elf_symtab_hdr (ibfd);
11350 locsymcount = symtab_hdr->sh_info;
11351 end_lgot_ents = lgot_ents + locsymcount;
11352 local_plt = (struct plt_entry **) end_lgot_ents;
11353 end_local_plt = local_plt + locsymcount;
11354 lgot_masks = (unsigned char *) end_local_plt;
11355 s = ppc64_elf_tdata (ibfd)->got;
11356 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11358 struct got_entry *ent;
11360 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11362 unsigned int ent_size = 8;
11363 unsigned int rel_size = sizeof (Elf64_External_Rela);
11365 ent->got.offset = s->size;
11366 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11371 s->size += ent_size;
11372 if ((*lgot_masks & PLT_IFUNC) != 0)
11374 htab->elf.irelplt->size += rel_size;
11375 htab->got_reli_size += rel_size;
11377 else if (info->shared)
11379 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11380 srel->size += rel_size;
11386 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11388 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11390 struct got_entry *ent;
11392 if (!is_ppc64_elf (ibfd))
11395 ent = ppc64_tlsld_got (ibfd);
11396 if (!ent->is_indirect
11397 && ent->got.offset != (bfd_vma) -1)
11399 asection *s = ppc64_elf_tdata (ibfd)->got;
11400 ent->got.offset = s->size;
11404 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11405 srel->size += sizeof (Elf64_External_Rela);
11410 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11411 if (!done_something)
11412 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11416 if (!is_ppc64_elf (ibfd))
11419 got = ppc64_elf_tdata (ibfd)->got;
11422 done_something = got->rawsize != got->size;
11423 if (done_something)
11428 if (done_something)
11429 (*htab->params->layout_sections_again) ();
11431 /* Set up for second pass over toc sections to recalculate elf_gp
11432 on input sections. */
11433 htab->toc_bfd = NULL;
11434 htab->toc_first_sec = NULL;
11435 htab->second_toc_pass = TRUE;
11436 return done_something;
11439 /* Called after second pass of multitoc partitioning. */
11442 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11444 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11446 /* After the second pass, toc_curr tracks the TOC offset used
11447 for code sections below in ppc64_elf_next_input_section. */
11448 htab->toc_curr = TOC_BASE_OFF;
11451 /* No toc references were found in ISEC. If the code in ISEC makes no
11452 calls, then there's no need to use toc adjusting stubs when branching
11453 into ISEC. Actually, indirect calls from ISEC are OK as they will
11454 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11455 needed, and 2 if a cyclical call-graph was found but no other reason
11456 for a stub was detected. If called from the top level, a return of
11457 2 means the same as a return of 0. */
11460 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11464 /* Mark this section as checked. */
11465 isec->call_check_done = 1;
11467 /* We know none of our code bearing sections will need toc stubs. */
11468 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11471 if (isec->size == 0)
11474 if (isec->output_section == NULL)
11478 if (isec->reloc_count != 0)
11480 Elf_Internal_Rela *relstart, *rel;
11481 Elf_Internal_Sym *local_syms;
11482 struct ppc_link_hash_table *htab;
11484 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11485 info->keep_memory);
11486 if (relstart == NULL)
11489 /* Look for branches to outside of this section. */
11491 htab = ppc_hash_table (info);
11495 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11497 enum elf_ppc64_reloc_type r_type;
11498 unsigned long r_symndx;
11499 struct elf_link_hash_entry *h;
11500 struct ppc_link_hash_entry *eh;
11501 Elf_Internal_Sym *sym;
11503 struct _opd_sec_data *opd;
11507 r_type = ELF64_R_TYPE (rel->r_info);
11508 if (r_type != R_PPC64_REL24
11509 && r_type != R_PPC64_REL14
11510 && r_type != R_PPC64_REL14_BRTAKEN
11511 && r_type != R_PPC64_REL14_BRNTAKEN)
11514 r_symndx = ELF64_R_SYM (rel->r_info);
11515 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11522 /* Calls to dynamic lib functions go through a plt call stub
11524 eh = (struct ppc_link_hash_entry *) h;
11526 && (eh->elf.plt.plist != NULL
11528 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11534 if (sym_sec == NULL)
11535 /* Ignore other undefined symbols. */
11538 /* Assume branches to other sections not included in the
11539 link need stubs too, to cover -R and absolute syms. */
11540 if (sym_sec->output_section == NULL)
11547 sym_value = sym->st_value;
11550 if (h->root.type != bfd_link_hash_defined
11551 && h->root.type != bfd_link_hash_defweak)
11553 sym_value = h->root.u.def.value;
11555 sym_value += rel->r_addend;
11557 /* If this branch reloc uses an opd sym, find the code section. */
11558 opd = get_opd_info (sym_sec);
11561 if (h == NULL && opd->adjust != NULL)
11565 adjust = opd->adjust[sym->st_value / 8];
11567 /* Assume deleted functions won't ever be called. */
11569 sym_value += adjust;
11572 dest = opd_entry_value (sym_sec, sym_value,
11573 &sym_sec, NULL, FALSE);
11574 if (dest == (bfd_vma) -1)
11579 + sym_sec->output_offset
11580 + sym_sec->output_section->vma);
11582 /* Ignore branch to self. */
11583 if (sym_sec == isec)
11586 /* If the called function uses the toc, we need a stub. */
11587 if (sym_sec->has_toc_reloc
11588 || sym_sec->makes_toc_func_call)
11594 /* Assume any branch that needs a long branch stub might in fact
11595 need a plt_branch stub. A plt_branch stub uses r2. */
11596 else if (dest - (isec->output_offset
11597 + isec->output_section->vma
11598 + rel->r_offset) + (1 << 25)
11599 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11607 /* If calling back to a section in the process of being
11608 tested, we can't say for sure that no toc adjusting stubs
11609 are needed, so don't return zero. */
11610 else if (sym_sec->call_check_in_progress)
11613 /* Branches to another section that itself doesn't have any TOC
11614 references are OK. Recursively call ourselves to check. */
11615 else if (!sym_sec->call_check_done)
11619 /* Mark current section as indeterminate, so that other
11620 sections that call back to current won't be marked as
11622 isec->call_check_in_progress = 1;
11623 recur = toc_adjusting_stub_needed (info, sym_sec);
11624 isec->call_check_in_progress = 0;
11635 if (local_syms != NULL
11636 && (elf_symtab_hdr (isec->owner).contents
11637 != (unsigned char *) local_syms))
11639 if (elf_section_data (isec)->relocs != relstart)
11644 && isec->map_head.s != NULL
11645 && (strcmp (isec->output_section->name, ".init") == 0
11646 || strcmp (isec->output_section->name, ".fini") == 0))
11648 if (isec->map_head.s->has_toc_reloc
11649 || isec->map_head.s->makes_toc_func_call)
11651 else if (!isec->map_head.s->call_check_done)
11654 isec->call_check_in_progress = 1;
11655 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11656 isec->call_check_in_progress = 0;
11663 isec->makes_toc_func_call = 1;
11668 /* The linker repeatedly calls this function for each input section,
11669 in the order that input sections are linked into output sections.
11670 Build lists of input sections to determine groupings between which
11671 we may insert linker stubs. */
11674 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11676 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11681 if ((isec->output_section->flags & SEC_CODE) != 0
11682 && isec->output_section->index <= htab->top_index)
11684 asection **list = htab->input_list + isec->output_section->index;
11685 /* Steal the link_sec pointer for our list. */
11686 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11687 /* This happens to make the list in reverse order,
11688 which is what we want. */
11689 PREV_SEC (isec) = *list;
11693 if (htab->multi_toc_needed)
11695 /* Analyse sections that aren't already flagged as needing a
11696 valid toc pointer. Exclude .fixup for the linux kernel.
11697 .fixup contains branches, but only back to the function that
11698 hit an exception. */
11699 if (!(isec->has_toc_reloc
11700 || (isec->flags & SEC_CODE) == 0
11701 || strcmp (isec->name, ".fixup") == 0
11702 || isec->call_check_done))
11704 if (toc_adjusting_stub_needed (info, isec) < 0)
11707 /* Make all sections use the TOC assigned for this object file.
11708 This will be wrong for pasted sections; We fix that in
11709 check_pasted_section(). */
11710 if (elf_gp (isec->owner) != 0)
11711 htab->toc_curr = elf_gp (isec->owner);
11714 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11718 /* Check that all .init and .fini sections use the same toc, if they
11719 have toc relocs. */
11722 check_pasted_section (struct bfd_link_info *info, const char *name)
11724 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11728 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11729 bfd_vma toc_off = 0;
11732 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11733 if (i->has_toc_reloc)
11736 toc_off = htab->stub_group[i->id].toc_off;
11737 else if (toc_off != htab->stub_group[i->id].toc_off)
11742 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11743 if (i->makes_toc_func_call)
11745 toc_off = htab->stub_group[i->id].toc_off;
11749 /* Make sure the whole pasted function uses the same toc offset. */
11751 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11752 htab->stub_group[i->id].toc_off = toc_off;
11758 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11760 return (check_pasted_section (info, ".init")
11761 & check_pasted_section (info, ".fini"));
11764 /* See whether we can group stub sections together. Grouping stub
11765 sections may result in fewer stubs. More importantly, we need to
11766 put all .init* and .fini* stubs at the beginning of the .init or
11767 .fini output sections respectively, because glibc splits the
11768 _init and _fini functions into multiple parts. Putting a stub in
11769 the middle of a function is not a good idea. */
11772 group_sections (struct ppc_link_hash_table *htab,
11773 bfd_size_type stub_group_size,
11774 bfd_boolean stubs_always_before_branch)
11777 bfd_size_type stub14_group_size;
11778 bfd_boolean suppress_size_errors;
11780 suppress_size_errors = FALSE;
11781 stub14_group_size = stub_group_size;
11782 if (stub_group_size == 1)
11784 /* Default values. */
11785 if (stubs_always_before_branch)
11787 stub_group_size = 0x1e00000;
11788 stub14_group_size = 0x7800;
11792 stub_group_size = 0x1c00000;
11793 stub14_group_size = 0x7000;
11795 suppress_size_errors = TRUE;
11798 list = htab->input_list + htab->top_index;
11801 asection *tail = *list;
11802 while (tail != NULL)
11806 bfd_size_type total;
11807 bfd_boolean big_sec;
11811 total = tail->size;
11812 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11813 && ppc64_elf_section_data (tail)->has_14bit_branch
11814 ? stub14_group_size : stub_group_size);
11815 if (big_sec && !suppress_size_errors)
11816 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11817 tail->owner, tail);
11818 curr_toc = htab->stub_group[tail->id].toc_off;
11820 while ((prev = PREV_SEC (curr)) != NULL
11821 && ((total += curr->output_offset - prev->output_offset)
11822 < (ppc64_elf_section_data (prev) != NULL
11823 && ppc64_elf_section_data (prev)->has_14bit_branch
11824 ? stub14_group_size : stub_group_size))
11825 && htab->stub_group[prev->id].toc_off == curr_toc)
11828 /* OK, the size from the start of CURR to the end is less
11829 than stub_group_size and thus can be handled by one stub
11830 section. (or the tail section is itself larger than
11831 stub_group_size, in which case we may be toast.) We
11832 should really be keeping track of the total size of stubs
11833 added here, as stubs contribute to the final output
11834 section size. That's a little tricky, and this way will
11835 only break if stubs added make the total size more than
11836 2^25, ie. for the default stub_group_size, if stubs total
11837 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11840 prev = PREV_SEC (tail);
11841 /* Set up this stub group. */
11842 htab->stub_group[tail->id].link_sec = curr;
11844 while (tail != curr && (tail = prev) != NULL);
11846 /* But wait, there's more! Input sections up to stub_group_size
11847 bytes before the stub section can be handled by it too.
11848 Don't do this if we have a really large section after the
11849 stubs, as adding more stubs increases the chance that
11850 branches may not reach into the stub section. */
11851 if (!stubs_always_before_branch && !big_sec)
11854 while (prev != NULL
11855 && ((total += tail->output_offset - prev->output_offset)
11856 < (ppc64_elf_section_data (prev) != NULL
11857 && ppc64_elf_section_data (prev)->has_14bit_branch
11858 ? stub14_group_size : stub_group_size))
11859 && htab->stub_group[prev->id].toc_off == curr_toc)
11862 prev = PREV_SEC (tail);
11863 htab->stub_group[tail->id].link_sec = curr;
11869 while (list-- != htab->input_list);
11870 free (htab->input_list);
11874 static const unsigned char glink_eh_frame_cie[] =
11876 0, 0, 0, 16, /* length. */
11877 0, 0, 0, 0, /* id. */
11878 1, /* CIE version. */
11879 'z', 'R', 0, /* Augmentation string. */
11880 4, /* Code alignment. */
11881 0x78, /* Data alignment. */
11883 1, /* Augmentation size. */
11884 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11885 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11888 /* Stripping output sections is normally done before dynamic section
11889 symbols have been allocated. This function is called later, and
11890 handles cases like htab->brlt which is mapped to its own output
11894 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11896 if (isec->size == 0
11897 && isec->output_section->size == 0
11898 && !(isec->output_section->flags & SEC_KEEP)
11899 && !bfd_section_removed_from_list (info->output_bfd,
11900 isec->output_section)
11901 && elf_section_data (isec->output_section)->dynindx == 0)
11903 isec->output_section->flags |= SEC_EXCLUDE;
11904 bfd_section_list_remove (info->output_bfd, isec->output_section);
11905 info->output_bfd->section_count--;
11909 /* Determine and set the size of the stub section for a final link.
11911 The basic idea here is to examine all the relocations looking for
11912 PC-relative calls to a target that is unreachable with a "bl"
11916 ppc64_elf_size_stubs (struct bfd_link_info *info)
11918 bfd_size_type stub_group_size;
11919 bfd_boolean stubs_always_before_branch;
11920 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11925 if (htab->params->plt_thread_safe == -1 && !info->executable)
11926 htab->params->plt_thread_safe = 1;
11927 if (!htab->opd_abi)
11928 htab->params->plt_thread_safe = 0;
11929 else if (htab->params->plt_thread_safe == -1)
11931 static const char *const thread_starter[] =
11935 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11937 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11938 "mq_notify", "create_timer",
11942 "GOMP_parallel_start",
11943 "GOMP_parallel_loop_static_start",
11944 "GOMP_parallel_loop_dynamic_start",
11945 "GOMP_parallel_loop_guided_start",
11946 "GOMP_parallel_loop_runtime_start",
11947 "GOMP_parallel_sections_start",
11951 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11953 struct elf_link_hash_entry *h;
11954 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11955 FALSE, FALSE, TRUE);
11956 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11957 if (htab->params->plt_thread_safe)
11961 stubs_always_before_branch = htab->params->group_size < 0;
11962 if (htab->params->group_size < 0)
11963 stub_group_size = -htab->params->group_size;
11965 stub_group_size = htab->params->group_size;
11967 group_sections (htab, stub_group_size, stubs_always_before_branch);
11972 unsigned int bfd_indx;
11973 asection *stub_sec;
11975 htab->stub_iteration += 1;
11977 for (input_bfd = info->input_bfds, bfd_indx = 0;
11979 input_bfd = input_bfd->link.next, bfd_indx++)
11981 Elf_Internal_Shdr *symtab_hdr;
11983 Elf_Internal_Sym *local_syms = NULL;
11985 if (!is_ppc64_elf (input_bfd))
11988 /* We'll need the symbol table in a second. */
11989 symtab_hdr = &elf_symtab_hdr (input_bfd);
11990 if (symtab_hdr->sh_info == 0)
11993 /* Walk over each section attached to the input bfd. */
11994 for (section = input_bfd->sections;
11996 section = section->next)
11998 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12000 /* If there aren't any relocs, then there's nothing more
12002 if ((section->flags & SEC_RELOC) == 0
12003 || (section->flags & SEC_ALLOC) == 0
12004 || (section->flags & SEC_LOAD) == 0
12005 || (section->flags & SEC_CODE) == 0
12006 || section->reloc_count == 0)
12009 /* If this section is a link-once section that will be
12010 discarded, then don't create any stubs. */
12011 if (section->output_section == NULL
12012 || section->output_section->owner != info->output_bfd)
12015 /* Get the relocs. */
12017 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12018 info->keep_memory);
12019 if (internal_relocs == NULL)
12020 goto error_ret_free_local;
12022 /* Now examine each relocation. */
12023 irela = internal_relocs;
12024 irelaend = irela + section->reloc_count;
12025 for (; irela < irelaend; irela++)
12027 enum elf_ppc64_reloc_type r_type;
12028 unsigned int r_indx;
12029 enum ppc_stub_type stub_type;
12030 struct ppc_stub_hash_entry *stub_entry;
12031 asection *sym_sec, *code_sec;
12032 bfd_vma sym_value, code_value;
12033 bfd_vma destination;
12034 unsigned long local_off;
12035 bfd_boolean ok_dest;
12036 struct ppc_link_hash_entry *hash;
12037 struct ppc_link_hash_entry *fdh;
12038 struct elf_link_hash_entry *h;
12039 Elf_Internal_Sym *sym;
12041 const asection *id_sec;
12042 struct _opd_sec_data *opd;
12043 struct plt_entry *plt_ent;
12045 r_type = ELF64_R_TYPE (irela->r_info);
12046 r_indx = ELF64_R_SYM (irela->r_info);
12048 if (r_type >= R_PPC64_max)
12050 bfd_set_error (bfd_error_bad_value);
12051 goto error_ret_free_internal;
12054 /* Only look for stubs on branch instructions. */
12055 if (r_type != R_PPC64_REL24
12056 && r_type != R_PPC64_REL14
12057 && r_type != R_PPC64_REL14_BRTAKEN
12058 && r_type != R_PPC64_REL14_BRNTAKEN)
12061 /* Now determine the call target, its name, value,
12063 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12064 r_indx, input_bfd))
12065 goto error_ret_free_internal;
12066 hash = (struct ppc_link_hash_entry *) h;
12073 sym_value = sym->st_value;
12076 else if (hash->elf.root.type == bfd_link_hash_defined
12077 || hash->elf.root.type == bfd_link_hash_defweak)
12079 sym_value = hash->elf.root.u.def.value;
12080 if (sym_sec->output_section != NULL)
12083 else if (hash->elf.root.type == bfd_link_hash_undefweak
12084 || hash->elf.root.type == bfd_link_hash_undefined)
12086 /* Recognise an old ABI func code entry sym, and
12087 use the func descriptor sym instead if it is
12089 if (hash->elf.root.root.string[0] == '.'
12090 && (fdh = lookup_fdh (hash, htab)) != NULL)
12092 if (fdh->elf.root.type == bfd_link_hash_defined
12093 || fdh->elf.root.type == bfd_link_hash_defweak)
12095 sym_sec = fdh->elf.root.u.def.section;
12096 sym_value = fdh->elf.root.u.def.value;
12097 if (sym_sec->output_section != NULL)
12106 bfd_set_error (bfd_error_bad_value);
12107 goto error_ret_free_internal;
12114 sym_value += irela->r_addend;
12115 destination = (sym_value
12116 + sym_sec->output_offset
12117 + sym_sec->output_section->vma);
12118 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12123 code_sec = sym_sec;
12124 code_value = sym_value;
12125 opd = get_opd_info (sym_sec);
12130 if (hash == NULL && opd->adjust != NULL)
12132 long adjust = opd->adjust[sym_value / 8];
12135 code_value += adjust;
12136 sym_value += adjust;
12138 dest = opd_entry_value (sym_sec, sym_value,
12139 &code_sec, &code_value, FALSE);
12140 if (dest != (bfd_vma) -1)
12142 destination = dest;
12145 /* Fixup old ABI sym to point at code
12147 hash->elf.root.type = bfd_link_hash_defweak;
12148 hash->elf.root.u.def.section = code_sec;
12149 hash->elf.root.u.def.value = code_value;
12154 /* Determine what (if any) linker stub is needed. */
12156 stub_type = ppc_type_of_stub (section, irela, &hash,
12157 &plt_ent, destination,
12160 if (stub_type != ppc_stub_plt_call)
12162 /* Check whether we need a TOC adjusting stub.
12163 Since the linker pastes together pieces from
12164 different object files when creating the
12165 _init and _fini functions, it may be that a
12166 call to what looks like a local sym is in
12167 fact a call needing a TOC adjustment. */
12168 if (code_sec != NULL
12169 && code_sec->output_section != NULL
12170 && (htab->stub_group[code_sec->id].toc_off
12171 != htab->stub_group[section->id].toc_off)
12172 && (code_sec->has_toc_reloc
12173 || code_sec->makes_toc_func_call))
12174 stub_type = ppc_stub_long_branch_r2off;
12177 if (stub_type == ppc_stub_none)
12180 /* __tls_get_addr calls might be eliminated. */
12181 if (stub_type != ppc_stub_plt_call
12183 && (hash == htab->tls_get_addr
12184 || hash == htab->tls_get_addr_fd)
12185 && section->has_tls_reloc
12186 && irela != internal_relocs)
12188 /* Get tls info. */
12189 unsigned char *tls_mask;
12191 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12192 irela - 1, input_bfd))
12193 goto error_ret_free_internal;
12194 if (*tls_mask != 0)
12198 if (stub_type == ppc_stub_plt_call
12199 && irela + 1 < irelaend
12200 && irela[1].r_offset == irela->r_offset + 4
12201 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12203 if (!tocsave_find (htab, INSERT,
12204 &local_syms, irela + 1, input_bfd))
12205 goto error_ret_free_internal;
12207 else if (stub_type == ppc_stub_plt_call)
12208 stub_type = ppc_stub_plt_call_r2save;
12210 /* Support for grouping stub sections. */
12211 id_sec = htab->stub_group[section->id].link_sec;
12213 /* Get the name of this stub. */
12214 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12216 goto error_ret_free_internal;
12218 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12219 stub_name, FALSE, FALSE);
12220 if (stub_entry != NULL)
12222 /* The proper stub has already been created. */
12224 if (stub_type == ppc_stub_plt_call_r2save)
12225 stub_entry->stub_type = stub_type;
12229 stub_entry = ppc_add_stub (stub_name, section, info);
12230 if (stub_entry == NULL)
12233 error_ret_free_internal:
12234 if (elf_section_data (section)->relocs == NULL)
12235 free (internal_relocs);
12236 error_ret_free_local:
12237 if (local_syms != NULL
12238 && (symtab_hdr->contents
12239 != (unsigned char *) local_syms))
12244 stub_entry->stub_type = stub_type;
12245 if (stub_type != ppc_stub_plt_call
12246 && stub_type != ppc_stub_plt_call_r2save)
12248 stub_entry->target_value = code_value;
12249 stub_entry->target_section = code_sec;
12253 stub_entry->target_value = sym_value;
12254 stub_entry->target_section = sym_sec;
12256 stub_entry->h = hash;
12257 stub_entry->plt_ent = plt_ent;
12258 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12260 if (stub_entry->h != NULL)
12261 htab->stub_globals += 1;
12264 /* We're done with the internal relocs, free them. */
12265 if (elf_section_data (section)->relocs != internal_relocs)
12266 free (internal_relocs);
12269 if (local_syms != NULL
12270 && symtab_hdr->contents != (unsigned char *) local_syms)
12272 if (!info->keep_memory)
12275 symtab_hdr->contents = (unsigned char *) local_syms;
12279 /* We may have added some stubs. Find out the new size of the
12281 for (stub_sec = htab->params->stub_bfd->sections;
12283 stub_sec = stub_sec->next)
12284 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12286 stub_sec->rawsize = stub_sec->size;
12287 stub_sec->size = 0;
12288 stub_sec->reloc_count = 0;
12289 stub_sec->flags &= ~SEC_RELOC;
12292 htab->brlt->size = 0;
12293 htab->brlt->reloc_count = 0;
12294 htab->brlt->flags &= ~SEC_RELOC;
12295 if (htab->relbrlt != NULL)
12296 htab->relbrlt->size = 0;
12298 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12300 if (info->emitrelocations
12301 && htab->glink != NULL && htab->glink->size != 0)
12303 htab->glink->reloc_count = 1;
12304 htab->glink->flags |= SEC_RELOC;
12307 if (htab->glink_eh_frame != NULL
12308 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12309 && htab->glink_eh_frame->output_section->size != 0)
12311 size_t size = 0, align;
12313 for (stub_sec = htab->params->stub_bfd->sections;
12315 stub_sec = stub_sec->next)
12316 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12318 if (htab->glink != NULL && htab->glink->size != 0)
12321 size += sizeof (glink_eh_frame_cie);
12323 align <<= htab->glink_eh_frame->output_section->alignment_power;
12325 size = (size + align) & ~align;
12326 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12327 htab->glink_eh_frame->size = size;
12330 if (htab->params->plt_stub_align != 0)
12331 for (stub_sec = htab->params->stub_bfd->sections;
12333 stub_sec = stub_sec->next)
12334 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12335 stub_sec->size = ((stub_sec->size
12336 + (1 << htab->params->plt_stub_align) - 1)
12337 & (-1 << htab->params->plt_stub_align));
12339 for (stub_sec = htab->params->stub_bfd->sections;
12341 stub_sec = stub_sec->next)
12342 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12343 && stub_sec->rawsize != stub_sec->size)
12346 /* Exit from this loop when no stubs have been added, and no stubs
12347 have changed size. */
12348 if (stub_sec == NULL
12349 && (htab->glink_eh_frame == NULL
12350 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12353 /* Ask the linker to do its stuff. */
12354 (*htab->params->layout_sections_again) ();
12357 maybe_strip_output (info, htab->brlt);
12358 if (htab->glink_eh_frame != NULL)
12359 maybe_strip_output (info, htab->glink_eh_frame);
12364 /* Called after we have determined section placement. If sections
12365 move, we'll be called again. Provide a value for TOCstart. */
12368 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12373 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12374 order. The TOC starts where the first of these sections starts. */
12375 s = bfd_get_section_by_name (obfd, ".got");
12376 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12377 s = bfd_get_section_by_name (obfd, ".toc");
12378 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12379 s = bfd_get_section_by_name (obfd, ".tocbss");
12380 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12381 s = bfd_get_section_by_name (obfd, ".plt");
12382 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12384 /* This may happen for
12385 o references to TOC base (SYM@toc / TOC[tc0]) without a
12387 o bad linker script
12388 o --gc-sections and empty TOC sections
12390 FIXME: Warn user? */
12392 /* Look for a likely section. We probably won't even be
12394 for (s = obfd->sections; s != NULL; s = s->next)
12395 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12397 == (SEC_ALLOC | SEC_SMALL_DATA))
12400 for (s = obfd->sections; s != NULL; s = s->next)
12401 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12402 == (SEC_ALLOC | SEC_SMALL_DATA))
12405 for (s = obfd->sections; s != NULL; s = s->next)
12406 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12410 for (s = obfd->sections; s != NULL; s = s->next)
12411 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12417 TOCstart = s->output_section->vma + s->output_offset;
12419 _bfd_set_gp_value (obfd, TOCstart);
12421 if (info != NULL && s != NULL)
12423 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12427 if (htab->elf.hgot != NULL)
12429 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12430 htab->elf.hgot->root.u.def.section = s;
12435 struct bfd_link_hash_entry *bh = NULL;
12436 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12437 s, TOC_BASE_OFF, NULL, FALSE,
12444 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12445 write out any global entry stubs. */
12448 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12450 struct bfd_link_info *info;
12451 struct ppc_link_hash_table *htab;
12452 struct plt_entry *pent;
12455 if (h->root.type == bfd_link_hash_indirect)
12458 if (!h->pointer_equality_needed)
12461 if (h->def_regular)
12465 htab = ppc_hash_table (info);
12470 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12471 if (pent->plt.offset != (bfd_vma) -1
12472 && pent->addend == 0)
12478 p = s->contents + h->root.u.def.value;
12479 plt = htab->elf.splt;
12480 if (!htab->elf.dynamic_sections_created
12481 || h->dynindx == -1)
12482 plt = htab->elf.iplt;
12483 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12484 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12486 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12488 info->callbacks->einfo
12489 (_("%P: linkage table error against `%T'\n"),
12490 h->root.root.string);
12491 bfd_set_error (bfd_error_bad_value);
12492 htab->stub_error = TRUE;
12495 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12496 if (htab->params->emit_stub_syms)
12498 size_t len = strlen (h->root.root.string);
12499 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12504 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12505 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12508 if (h->root.type == bfd_link_hash_new)
12510 h->root.type = bfd_link_hash_defined;
12511 h->root.u.def.section = s;
12512 h->root.u.def.value = p - s->contents;
12513 h->ref_regular = 1;
12514 h->def_regular = 1;
12515 h->ref_regular_nonweak = 1;
12516 h->forced_local = 1;
12521 if (PPC_HA (off) != 0)
12523 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12526 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12528 bfd_put_32 (s->owner, MTCTR_R12, p);
12530 bfd_put_32 (s->owner, BCTR, p);
12536 /* Build all the stubs associated with the current output file.
12537 The stubs are kept in a hash table attached to the main linker
12538 hash table. This function is called via gldelf64ppc_finish. */
12541 ppc64_elf_build_stubs (struct bfd_link_info *info,
12544 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12545 asection *stub_sec;
12547 int stub_sec_count = 0;
12552 /* Allocate memory to hold the linker stubs. */
12553 for (stub_sec = htab->params->stub_bfd->sections;
12555 stub_sec = stub_sec->next)
12556 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12557 && stub_sec->size != 0)
12559 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12560 if (stub_sec->contents == NULL)
12562 /* We want to check that built size is the same as calculated
12563 size. rawsize is a convenient location to use. */
12564 stub_sec->rawsize = stub_sec->size;
12565 stub_sec->size = 0;
12568 if (htab->glink != NULL && htab->glink->size != 0)
12573 /* Build the .glink plt call stub. */
12574 if (htab->params->emit_stub_syms)
12576 struct elf_link_hash_entry *h;
12577 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12578 TRUE, FALSE, FALSE);
12581 if (h->root.type == bfd_link_hash_new)
12583 h->root.type = bfd_link_hash_defined;
12584 h->root.u.def.section = htab->glink;
12585 h->root.u.def.value = 8;
12586 h->ref_regular = 1;
12587 h->def_regular = 1;
12588 h->ref_regular_nonweak = 1;
12589 h->forced_local = 1;
12593 plt0 = (htab->elf.splt->output_section->vma
12594 + htab->elf.splt->output_offset
12596 if (info->emitrelocations)
12598 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12601 r->r_offset = (htab->glink->output_offset
12602 + htab->glink->output_section->vma);
12603 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12604 r->r_addend = plt0;
12606 p = htab->glink->contents;
12607 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12608 bfd_put_64 (htab->glink->owner, plt0, p);
12612 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12614 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12616 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12618 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12620 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12622 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12624 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12626 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12628 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12630 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12635 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12637 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12639 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12641 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12643 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12645 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12647 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12649 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12651 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12653 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12655 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12657 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12660 bfd_put_32 (htab->glink->owner, BCTR, p);
12662 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12664 bfd_put_32 (htab->glink->owner, NOP, p);
12668 /* Build the .glink lazy link call stubs. */
12670 while (p < htab->glink->contents + htab->glink->rawsize)
12676 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12681 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12683 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12688 bfd_put_32 (htab->glink->owner,
12689 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12694 /* Build .glink global entry stubs. */
12695 if (htab->glink->size > htab->glink->rawsize)
12696 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12699 if (htab->brlt != NULL && htab->brlt->size != 0)
12701 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12703 if (htab->brlt->contents == NULL)
12706 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12708 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12709 htab->relbrlt->size);
12710 if (htab->relbrlt->contents == NULL)
12714 if (htab->glink_eh_frame != NULL
12715 && htab->glink_eh_frame->size != 0)
12718 bfd_byte *last_fde;
12719 size_t last_fde_len, size, align, pad;
12721 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12724 htab->glink_eh_frame->contents = p;
12727 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12729 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12730 /* CIE length (rewrite in case little-endian). */
12731 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12732 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12733 p += sizeof (glink_eh_frame_cie);
12735 for (stub_sec = htab->params->stub_bfd->sections;
12737 stub_sec = stub_sec->next)
12738 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12743 bfd_put_32 (htab->elf.dynobj, 16, p);
12746 val = p - htab->glink_eh_frame->contents;
12747 bfd_put_32 (htab->elf.dynobj, val, p);
12749 /* Offset to stub section. */
12750 val = (stub_sec->output_section->vma
12751 + stub_sec->output_offset);
12752 val -= (htab->glink_eh_frame->output_section->vma
12753 + htab->glink_eh_frame->output_offset);
12754 val -= p - htab->glink_eh_frame->contents;
12755 if (val + 0x80000000 > 0xffffffff)
12757 info->callbacks->einfo
12758 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12762 bfd_put_32 (htab->elf.dynobj, val, p);
12764 /* stub section size. */
12765 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12767 /* Augmentation. */
12772 if (htab->glink != NULL && htab->glink->size != 0)
12777 bfd_put_32 (htab->elf.dynobj, 20, p);
12780 val = p - htab->glink_eh_frame->contents;
12781 bfd_put_32 (htab->elf.dynobj, val, p);
12783 /* Offset to .glink. */
12784 val = (htab->glink->output_section->vma
12785 + htab->glink->output_offset
12787 val -= (htab->glink_eh_frame->output_section->vma
12788 + htab->glink_eh_frame->output_offset);
12789 val -= p - htab->glink_eh_frame->contents;
12790 if (val + 0x80000000 > 0xffffffff)
12792 info->callbacks->einfo
12793 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12794 htab->glink->name);
12797 bfd_put_32 (htab->elf.dynobj, val, p);
12800 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12802 /* Augmentation. */
12805 *p++ = DW_CFA_advance_loc + 1;
12806 *p++ = DW_CFA_register;
12809 *p++ = DW_CFA_advance_loc + 4;
12810 *p++ = DW_CFA_restore_extended;
12813 /* Subsume any padding into the last FDE if user .eh_frame
12814 sections are aligned more than glink_eh_frame. Otherwise any
12815 zero padding will be seen as a terminator. */
12816 size = p - htab->glink_eh_frame->contents;
12818 align <<= htab->glink_eh_frame->output_section->alignment_power;
12820 pad = ((size + align) & ~align) - size;
12821 htab->glink_eh_frame->size = size + pad;
12822 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12825 /* Build the stubs as directed by the stub hash table. */
12826 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12828 if (htab->relbrlt != NULL)
12829 htab->relbrlt->reloc_count = 0;
12831 if (htab->params->plt_stub_align != 0)
12832 for (stub_sec = htab->params->stub_bfd->sections;
12834 stub_sec = stub_sec->next)
12835 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12836 stub_sec->size = ((stub_sec->size
12837 + (1 << htab->params->plt_stub_align) - 1)
12838 & (-1 << htab->params->plt_stub_align));
12840 for (stub_sec = htab->params->stub_bfd->sections;
12842 stub_sec = stub_sec->next)
12843 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12845 stub_sec_count += 1;
12846 if (stub_sec->rawsize != stub_sec->size)
12850 if (stub_sec != NULL
12851 || (htab->glink_eh_frame != NULL
12852 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12854 htab->stub_error = TRUE;
12855 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12858 if (htab->stub_error)
12863 *stats = bfd_malloc (500);
12864 if (*stats == NULL)
12867 sprintf (*stats, _("linker stubs in %u group%s\n"
12869 " toc adjust %lu\n"
12870 " long branch %lu\n"
12871 " long toc adj %lu\n"
12873 " plt call toc %lu\n"
12874 " global entry %lu"),
12876 stub_sec_count == 1 ? "" : "s",
12877 htab->stub_count[ppc_stub_long_branch - 1],
12878 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12879 htab->stub_count[ppc_stub_plt_branch - 1],
12880 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12881 htab->stub_count[ppc_stub_plt_call - 1],
12882 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12883 htab->stub_count[ppc_stub_global_entry - 1]);
12888 /* This function undoes the changes made by add_symbol_adjust. */
12891 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12893 struct ppc_link_hash_entry *eh;
12895 if (h->root.type == bfd_link_hash_indirect)
12898 eh = (struct ppc_link_hash_entry *) h;
12899 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12902 eh->elf.root.type = bfd_link_hash_undefined;
12907 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12909 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12912 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12915 /* What to do when ld finds relocations against symbols defined in
12916 discarded sections. */
12918 static unsigned int
12919 ppc64_elf_action_discarded (asection *sec)
12921 if (strcmp (".opd", sec->name) == 0)
12924 if (strcmp (".toc", sec->name) == 0)
12927 if (strcmp (".toc1", sec->name) == 0)
12930 return _bfd_elf_default_action_discarded (sec);
12933 /* The RELOCATE_SECTION function is called by the ELF backend linker
12934 to handle the relocations for a section.
12936 The relocs are always passed as Rela structures; if the section
12937 actually uses Rel structures, the r_addend field will always be
12940 This function is responsible for adjust the section contents as
12941 necessary, and (if using Rela relocs and generating a
12942 relocatable output file) adjusting the reloc addend as
12945 This function does not have to worry about setting the reloc
12946 address or the reloc symbol index.
12948 LOCAL_SYMS is a pointer to the swapped in local symbols.
12950 LOCAL_SECTIONS is an array giving the section in the input file
12951 corresponding to the st_shndx field of each local symbol.
12953 The global hash table entry for the global symbols can be found
12954 via elf_sym_hashes (input_bfd).
12956 When generating relocatable output, this function must handle
12957 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12958 going to be the section symbol corresponding to the output
12959 section, which means that the addend must be adjusted
12963 ppc64_elf_relocate_section (bfd *output_bfd,
12964 struct bfd_link_info *info,
12966 asection *input_section,
12967 bfd_byte *contents,
12968 Elf_Internal_Rela *relocs,
12969 Elf_Internal_Sym *local_syms,
12970 asection **local_sections)
12972 struct ppc_link_hash_table *htab;
12973 Elf_Internal_Shdr *symtab_hdr;
12974 struct elf_link_hash_entry **sym_hashes;
12975 Elf_Internal_Rela *rel;
12976 Elf_Internal_Rela *relend;
12977 Elf_Internal_Rela outrel;
12979 struct got_entry **local_got_ents;
12981 bfd_boolean ret = TRUE;
12982 bfd_boolean is_opd;
12983 /* Assume 'at' branch hints. */
12984 bfd_boolean is_isa_v2 = TRUE;
12985 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12987 /* Initialize howto table if needed. */
12988 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12991 htab = ppc_hash_table (info);
12995 /* Don't relocate stub sections. */
12996 if (input_section->owner == htab->params->stub_bfd)
12999 BFD_ASSERT (is_ppc64_elf (input_bfd));
13001 local_got_ents = elf_local_got_ents (input_bfd);
13002 TOCstart = elf_gp (output_bfd);
13003 symtab_hdr = &elf_symtab_hdr (input_bfd);
13004 sym_hashes = elf_sym_hashes (input_bfd);
13005 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13008 relend = relocs + input_section->reloc_count;
13009 for (; rel < relend; rel++)
13011 enum elf_ppc64_reloc_type r_type;
13013 bfd_reloc_status_type r;
13014 Elf_Internal_Sym *sym;
13016 struct elf_link_hash_entry *h_elf;
13017 struct ppc_link_hash_entry *h;
13018 struct ppc_link_hash_entry *fdh;
13019 const char *sym_name;
13020 unsigned long r_symndx, toc_symndx;
13021 bfd_vma toc_addend;
13022 unsigned char tls_mask, tls_gd, tls_type;
13023 unsigned char sym_type;
13024 bfd_vma relocation;
13025 bfd_boolean unresolved_reloc;
13026 bfd_boolean warned;
13027 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13030 struct ppc_stub_hash_entry *stub_entry;
13031 bfd_vma max_br_offset;
13033 const Elf_Internal_Rela orig_rel = *rel;
13034 reloc_howto_type *howto;
13035 struct reloc_howto_struct alt_howto;
13037 r_type = ELF64_R_TYPE (rel->r_info);
13038 r_symndx = ELF64_R_SYM (rel->r_info);
13040 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13041 symbol of the previous ADDR64 reloc. The symbol gives us the
13042 proper TOC base to use. */
13043 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13045 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13047 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13053 unresolved_reloc = FALSE;
13056 if (r_symndx < symtab_hdr->sh_info)
13058 /* It's a local symbol. */
13059 struct _opd_sec_data *opd;
13061 sym = local_syms + r_symndx;
13062 sec = local_sections[r_symndx];
13063 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13064 sym_type = ELF64_ST_TYPE (sym->st_info);
13065 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13066 opd = get_opd_info (sec);
13067 if (opd != NULL && opd->adjust != NULL)
13069 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13074 /* If this is a relocation against the opd section sym
13075 and we have edited .opd, adjust the reloc addend so
13076 that ld -r and ld --emit-relocs output is correct.
13077 If it is a reloc against some other .opd symbol,
13078 then the symbol value will be adjusted later. */
13079 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13080 rel->r_addend += adjust;
13082 relocation += adjust;
13088 bfd_boolean ignored;
13090 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13091 r_symndx, symtab_hdr, sym_hashes,
13092 h_elf, sec, relocation,
13093 unresolved_reloc, warned, ignored);
13094 sym_name = h_elf->root.root.string;
13095 sym_type = h_elf->type;
13097 && sec->owner == output_bfd
13098 && strcmp (sec->name, ".opd") == 0)
13100 /* This is a symbol defined in a linker script. All
13101 such are defined in output sections, even those
13102 defined by simple assignment from a symbol defined in
13103 an input section. Transfer the symbol to an
13104 appropriate input .opd section, so that a branch to
13105 this symbol will be mapped to the location specified
13106 by the opd entry. */
13107 struct bfd_link_order *lo;
13108 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13109 if (lo->type == bfd_indirect_link_order)
13111 asection *isec = lo->u.indirect.section;
13112 if (h_elf->root.u.def.value >= isec->output_offset
13113 && h_elf->root.u.def.value < (isec->output_offset
13116 h_elf->root.u.def.value -= isec->output_offset;
13117 h_elf->root.u.def.section = isec;
13124 h = (struct ppc_link_hash_entry *) h_elf;
13126 if (sec != NULL && discarded_section (sec))
13127 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13129 ppc64_elf_howto_table[r_type], 0,
13132 if (info->relocatable)
13135 if (h != NULL && &h->elf == htab->elf.hgot)
13137 relocation = (TOCstart
13138 + htab->stub_group[input_section->id].toc_off);
13139 sec = bfd_abs_section_ptr;
13140 unresolved_reloc = FALSE;
13143 /* TLS optimizations. Replace instruction sequences and relocs
13144 based on information we collected in tls_optimize. We edit
13145 RELOCS so that --emit-relocs will output something sensible
13146 for the final instruction stream. */
13151 tls_mask = h->tls_mask;
13152 else if (local_got_ents != NULL)
13154 struct plt_entry **local_plt = (struct plt_entry **)
13155 (local_got_ents + symtab_hdr->sh_info);
13156 unsigned char *lgot_masks = (unsigned char *)
13157 (local_plt + symtab_hdr->sh_info);
13158 tls_mask = lgot_masks[r_symndx];
13161 && (r_type == R_PPC64_TLS
13162 || r_type == R_PPC64_TLSGD
13163 || r_type == R_PPC64_TLSLD))
13165 /* Check for toc tls entries. */
13166 unsigned char *toc_tls;
13168 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13169 &local_syms, rel, input_bfd))
13173 tls_mask = *toc_tls;
13176 /* Check that tls relocs are used with tls syms, and non-tls
13177 relocs are used with non-tls syms. */
13178 if (r_symndx != STN_UNDEF
13179 && r_type != R_PPC64_NONE
13181 || h->elf.root.type == bfd_link_hash_defined
13182 || h->elf.root.type == bfd_link_hash_defweak)
13183 && (IS_PPC64_TLS_RELOC (r_type)
13184 != (sym_type == STT_TLS
13185 || (sym_type == STT_SECTION
13186 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13189 && (r_type == R_PPC64_TLS
13190 || r_type == R_PPC64_TLSGD
13191 || r_type == R_PPC64_TLSLD))
13192 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13195 info->callbacks->einfo
13196 (!IS_PPC64_TLS_RELOC (r_type)
13197 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13198 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13199 input_bfd, input_section, rel->r_offset,
13200 ppc64_elf_howto_table[r_type]->name,
13204 /* Ensure reloc mapping code below stays sane. */
13205 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13206 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13207 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13208 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13209 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13210 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13211 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13212 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13213 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13214 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13222 case R_PPC64_LO_DS_OPT:
13223 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13224 if ((insn & (0x3f << 26)) != 58u << 26)
13226 insn += (14u << 26) - (58u << 26);
13227 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13228 r_type = R_PPC64_TOC16_LO;
13229 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13232 case R_PPC64_TOC16:
13233 case R_PPC64_TOC16_LO:
13234 case R_PPC64_TOC16_DS:
13235 case R_PPC64_TOC16_LO_DS:
13237 /* Check for toc tls entries. */
13238 unsigned char *toc_tls;
13241 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13242 &local_syms, rel, input_bfd);
13248 tls_mask = *toc_tls;
13249 if (r_type == R_PPC64_TOC16_DS
13250 || r_type == R_PPC64_TOC16_LO_DS)
13253 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13258 /* If we found a GD reloc pair, then we might be
13259 doing a GD->IE transition. */
13262 tls_gd = TLS_TPRELGD;
13263 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13266 else if (retval == 3)
13268 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13276 case R_PPC64_GOT_TPREL16_HI:
13277 case R_PPC64_GOT_TPREL16_HA:
13279 && (tls_mask & TLS_TPREL) == 0)
13281 rel->r_offset -= d_offset;
13282 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13283 r_type = R_PPC64_NONE;
13284 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13288 case R_PPC64_GOT_TPREL16_DS:
13289 case R_PPC64_GOT_TPREL16_LO_DS:
13291 && (tls_mask & TLS_TPREL) == 0)
13294 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13296 insn |= 0x3c0d0000; /* addis 0,13,0 */
13297 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13298 r_type = R_PPC64_TPREL16_HA;
13299 if (toc_symndx != 0)
13301 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13302 rel->r_addend = toc_addend;
13303 /* We changed the symbol. Start over in order to
13304 get h, sym, sec etc. right. */
13309 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13315 && (tls_mask & TLS_TPREL) == 0)
13317 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13318 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13321 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13322 /* Was PPC64_TLS which sits on insn boundary, now
13323 PPC64_TPREL16_LO which is at low-order half-word. */
13324 rel->r_offset += d_offset;
13325 r_type = R_PPC64_TPREL16_LO;
13326 if (toc_symndx != 0)
13328 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13329 rel->r_addend = toc_addend;
13330 /* We changed the symbol. Start over in order to
13331 get h, sym, sec etc. right. */
13336 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13340 case R_PPC64_GOT_TLSGD16_HI:
13341 case R_PPC64_GOT_TLSGD16_HA:
13342 tls_gd = TLS_TPRELGD;
13343 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13347 case R_PPC64_GOT_TLSLD16_HI:
13348 case R_PPC64_GOT_TLSLD16_HA:
13349 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13352 if ((tls_mask & tls_gd) != 0)
13353 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13354 + R_PPC64_GOT_TPREL16_DS);
13357 rel->r_offset -= d_offset;
13358 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13359 r_type = R_PPC64_NONE;
13361 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13365 case R_PPC64_GOT_TLSGD16:
13366 case R_PPC64_GOT_TLSGD16_LO:
13367 tls_gd = TLS_TPRELGD;
13368 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13372 case R_PPC64_GOT_TLSLD16:
13373 case R_PPC64_GOT_TLSLD16_LO:
13374 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13376 unsigned int insn1, insn2, insn3;
13380 offset = (bfd_vma) -1;
13381 /* If not using the newer R_PPC64_TLSGD/LD to mark
13382 __tls_get_addr calls, we must trust that the call
13383 stays with its arg setup insns, ie. that the next
13384 reloc is the __tls_get_addr call associated with
13385 the current reloc. Edit both insns. */
13386 if (input_section->has_tls_get_addr_call
13387 && rel + 1 < relend
13388 && branch_reloc_hash_match (input_bfd, rel + 1,
13389 htab->tls_get_addr,
13390 htab->tls_get_addr_fd))
13391 offset = rel[1].r_offset;
13392 if ((tls_mask & tls_gd) != 0)
13395 insn1 = bfd_get_32 (output_bfd,
13396 contents + rel->r_offset - d_offset);
13397 insn1 &= (1 << 26) - (1 << 2);
13398 insn1 |= 58 << 26; /* ld */
13399 insn2 = 0x7c636a14; /* add 3,3,13 */
13400 if (offset != (bfd_vma) -1)
13401 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13402 if ((tls_mask & TLS_EXPLICIT) == 0)
13403 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13404 + R_PPC64_GOT_TPREL16_DS);
13406 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13407 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13412 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13413 insn2 = 0x38630000; /* addi 3,3,0 */
13416 /* Was an LD reloc. */
13418 sec = local_sections[toc_symndx];
13420 r_symndx < symtab_hdr->sh_info;
13422 if (local_sections[r_symndx] == sec)
13424 if (r_symndx >= symtab_hdr->sh_info)
13425 r_symndx = STN_UNDEF;
13426 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13427 if (r_symndx != STN_UNDEF)
13428 rel->r_addend -= (local_syms[r_symndx].st_value
13429 + sec->output_offset
13430 + sec->output_section->vma);
13432 else if (toc_symndx != 0)
13434 r_symndx = toc_symndx;
13435 rel->r_addend = toc_addend;
13437 r_type = R_PPC64_TPREL16_HA;
13438 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13439 if (offset != (bfd_vma) -1)
13441 rel[1].r_info = ELF64_R_INFO (r_symndx,
13442 R_PPC64_TPREL16_LO);
13443 rel[1].r_offset = offset + d_offset;
13444 rel[1].r_addend = rel->r_addend;
13447 bfd_put_32 (output_bfd, insn1,
13448 contents + rel->r_offset - d_offset);
13449 if (offset != (bfd_vma) -1)
13451 insn3 = bfd_get_32 (output_bfd,
13452 contents + offset + 4);
13454 || insn3 == CROR_151515 || insn3 == CROR_313131)
13456 rel[1].r_offset += 4;
13457 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13460 bfd_put_32 (output_bfd, insn2, contents + offset);
13462 if ((tls_mask & tls_gd) == 0
13463 && (tls_gd == 0 || toc_symndx != 0))
13465 /* We changed the symbol. Start over in order
13466 to get h, sym, sec etc. right. */
13473 case R_PPC64_TLSGD:
13474 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13476 unsigned int insn2, insn3;
13477 bfd_vma offset = rel->r_offset;
13479 if ((tls_mask & TLS_TPRELGD) != 0)
13482 r_type = R_PPC64_NONE;
13483 insn2 = 0x7c636a14; /* add 3,3,13 */
13488 if (toc_symndx != 0)
13490 r_symndx = toc_symndx;
13491 rel->r_addend = toc_addend;
13493 r_type = R_PPC64_TPREL16_LO;
13494 rel->r_offset = offset + d_offset;
13495 insn2 = 0x38630000; /* addi 3,3,0 */
13497 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13498 /* Zap the reloc on the _tls_get_addr call too. */
13499 BFD_ASSERT (offset == rel[1].r_offset);
13500 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13501 insn3 = bfd_get_32 (output_bfd,
13502 contents + offset + 4);
13504 || insn3 == CROR_151515 || insn3 == CROR_313131)
13506 rel->r_offset += 4;
13507 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13510 bfd_put_32 (output_bfd, insn2, contents + offset);
13511 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13519 case R_PPC64_TLSLD:
13520 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13522 unsigned int insn2, insn3;
13523 bfd_vma offset = rel->r_offset;
13526 sec = local_sections[toc_symndx];
13528 r_symndx < symtab_hdr->sh_info;
13530 if (local_sections[r_symndx] == sec)
13532 if (r_symndx >= symtab_hdr->sh_info)
13533 r_symndx = STN_UNDEF;
13534 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13535 if (r_symndx != STN_UNDEF)
13536 rel->r_addend -= (local_syms[r_symndx].st_value
13537 + sec->output_offset
13538 + sec->output_section->vma);
13540 r_type = R_PPC64_TPREL16_LO;
13541 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13542 rel->r_offset = offset + d_offset;
13543 /* Zap the reloc on the _tls_get_addr call too. */
13544 BFD_ASSERT (offset == rel[1].r_offset);
13545 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13546 insn2 = 0x38630000; /* addi 3,3,0 */
13547 insn3 = bfd_get_32 (output_bfd,
13548 contents + offset + 4);
13550 || insn3 == CROR_151515 || insn3 == CROR_313131)
13552 rel->r_offset += 4;
13553 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13556 bfd_put_32 (output_bfd, insn2, contents + offset);
13562 case R_PPC64_DTPMOD64:
13563 if (rel + 1 < relend
13564 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13565 && rel[1].r_offset == rel->r_offset + 8)
13567 if ((tls_mask & TLS_GD) == 0)
13569 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13570 if ((tls_mask & TLS_TPRELGD) != 0)
13571 r_type = R_PPC64_TPREL64;
13574 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13575 r_type = R_PPC64_NONE;
13577 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13582 if ((tls_mask & TLS_LD) == 0)
13584 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13585 r_type = R_PPC64_NONE;
13586 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13591 case R_PPC64_TPREL64:
13592 if ((tls_mask & TLS_TPREL) == 0)
13594 r_type = R_PPC64_NONE;
13595 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13599 case R_PPC64_REL16_HA:
13600 /* If we are generating a non-PIC executable, edit
13601 . 0: addis 2,12,.TOC.-0b@ha
13602 . addi 2,2,.TOC.-0b@l
13603 used by ELFv2 global entry points to set up r2, to
13606 if .TOC. is in range. */
13608 && !info->traditional_format
13609 && h != NULL && &h->elf == htab->elf.hgot
13610 && rel + 1 < relend
13611 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13612 && rel[1].r_offset == rel->r_offset + 4
13613 && rel[1].r_addend == rel->r_addend + 4
13614 && relocation + 0x80008000 <= 0xffffffff)
13616 unsigned int insn1, insn2;
13617 bfd_vma offset = rel->r_offset - d_offset;
13618 insn1 = bfd_get_32 (output_bfd, contents + offset);
13619 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13620 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13621 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13623 r_type = R_PPC64_ADDR16_HA;
13624 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13625 rel->r_addend -= d_offset;
13626 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13627 rel[1].r_addend -= d_offset + 4;
13628 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13634 /* Handle other relocations that tweak non-addend part of insn. */
13636 max_br_offset = 1 << 25;
13637 addend = rel->r_addend;
13638 reloc_dest = DEST_NORMAL;
13644 case R_PPC64_TOCSAVE:
13645 if (relocation + addend == (rel->r_offset
13646 + input_section->output_offset
13647 + input_section->output_section->vma)
13648 && tocsave_find (htab, NO_INSERT,
13649 &local_syms, rel, input_bfd))
13651 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13653 || insn == CROR_151515 || insn == CROR_313131)
13654 bfd_put_32 (input_bfd,
13655 STD_R2_0R1 + STK_TOC (htab),
13656 contents + rel->r_offset);
13660 /* Branch taken prediction relocations. */
13661 case R_PPC64_ADDR14_BRTAKEN:
13662 case R_PPC64_REL14_BRTAKEN:
13663 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13666 /* Branch not taken prediction relocations. */
13667 case R_PPC64_ADDR14_BRNTAKEN:
13668 case R_PPC64_REL14_BRNTAKEN:
13669 insn |= bfd_get_32 (output_bfd,
13670 contents + rel->r_offset) & ~(0x01 << 21);
13673 case R_PPC64_REL14:
13674 max_br_offset = 1 << 15;
13677 case R_PPC64_REL24:
13678 /* Calls to functions with a different TOC, such as calls to
13679 shared objects, need to alter the TOC pointer. This is
13680 done using a linkage stub. A REL24 branching to these
13681 linkage stubs needs to be followed by a nop, as the nop
13682 will be replaced with an instruction to restore the TOC
13687 && h->oh->is_func_descriptor)
13688 fdh = ppc_follow_link (h->oh);
13689 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13691 if (stub_entry != NULL
13692 && (stub_entry->stub_type == ppc_stub_plt_call
13693 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13694 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13695 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13697 bfd_boolean can_plt_call = FALSE;
13699 /* All of these stubs will modify r2, so there must be a
13700 branch and link followed by a nop. The nop is
13701 replaced by an insn to restore r2. */
13702 if (rel->r_offset + 8 <= input_section->size)
13706 br = bfd_get_32 (input_bfd,
13707 contents + rel->r_offset);
13712 nop = bfd_get_32 (input_bfd,
13713 contents + rel->r_offset + 4);
13715 || nop == CROR_151515 || nop == CROR_313131)
13718 && (h == htab->tls_get_addr_fd
13719 || h == htab->tls_get_addr)
13720 && !htab->params->no_tls_get_addr_opt)
13722 /* Special stub used, leave nop alone. */
13725 bfd_put_32 (input_bfd,
13726 LD_R2_0R1 + STK_TOC (htab),
13727 contents + rel->r_offset + 4);
13728 can_plt_call = TRUE;
13733 if (!can_plt_call && h != NULL)
13735 const char *name = h->elf.root.root.string;
13740 if (strncmp (name, "__libc_start_main", 17) == 0
13741 && (name[17] == 0 || name[17] == '@'))
13743 /* Allow crt1 branch to go via a toc adjusting
13744 stub. Other calls that never return could do
13745 the same, if we could detect such. */
13746 can_plt_call = TRUE;
13752 /* g++ as of 20130507 emits self-calls without a
13753 following nop. This is arguably wrong since we
13754 have conflicting information. On the one hand a
13755 global symbol and on the other a local call
13756 sequence, but don't error for this special case.
13757 It isn't possible to cheaply verify we have
13758 exactly such a call. Allow all calls to the same
13760 asection *code_sec = sec;
13762 if (get_opd_info (sec) != NULL)
13764 bfd_vma off = (relocation + addend
13765 - sec->output_section->vma
13766 - sec->output_offset);
13768 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13770 if (code_sec == input_section)
13771 can_plt_call = TRUE;
13776 info->callbacks->einfo
13777 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13778 "recompile with -fPIC\n"),
13779 input_bfd, input_section, rel->r_offset, sym_name);
13781 bfd_set_error (bfd_error_bad_value);
13786 && (stub_entry->stub_type == ppc_stub_plt_call
13787 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13788 unresolved_reloc = FALSE;
13791 if ((stub_entry == NULL
13792 || stub_entry->stub_type == ppc_stub_long_branch
13793 || stub_entry->stub_type == ppc_stub_plt_branch)
13794 && get_opd_info (sec) != NULL)
13796 /* The branch destination is the value of the opd entry. */
13797 bfd_vma off = (relocation + addend
13798 - sec->output_section->vma
13799 - sec->output_offset);
13800 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13801 if (dest != (bfd_vma) -1)
13805 reloc_dest = DEST_OPD;
13809 /* If the branch is out of reach we ought to have a long
13811 from = (rel->r_offset
13812 + input_section->output_offset
13813 + input_section->output_section->vma);
13815 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13819 if (stub_entry != NULL
13820 && (stub_entry->stub_type == ppc_stub_long_branch
13821 || stub_entry->stub_type == ppc_stub_plt_branch)
13822 && (r_type == R_PPC64_ADDR14_BRTAKEN
13823 || r_type == R_PPC64_ADDR14_BRNTAKEN
13824 || (relocation + addend - from + max_br_offset
13825 < 2 * max_br_offset)))
13826 /* Don't use the stub if this branch is in range. */
13829 if (stub_entry != NULL)
13831 /* Munge up the value and addend so that we call the stub
13832 rather than the procedure directly. */
13833 relocation = (stub_entry->stub_offset
13834 + stub_entry->stub_sec->output_offset
13835 + stub_entry->stub_sec->output_section->vma);
13837 reloc_dest = DEST_STUB;
13839 if ((stub_entry->stub_type == ppc_stub_plt_call
13840 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13841 && (ALWAYS_EMIT_R2SAVE
13842 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13843 && rel + 1 < relend
13844 && rel[1].r_offset == rel->r_offset + 4
13845 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13853 /* Set 'a' bit. This is 0b00010 in BO field for branch
13854 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13855 for branch on CTR insns (BO == 1a00t or 1a01t). */
13856 if ((insn & (0x14 << 21)) == (0x04 << 21))
13857 insn |= 0x02 << 21;
13858 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13859 insn |= 0x08 << 21;
13865 /* Invert 'y' bit if not the default. */
13866 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13867 insn ^= 0x01 << 21;
13870 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13873 /* NOP out calls to undefined weak functions.
13874 We can thus call a weak function without first
13875 checking whether the function is defined. */
13877 && h->elf.root.type == bfd_link_hash_undefweak
13878 && h->elf.dynindx == -1
13879 && r_type == R_PPC64_REL24
13883 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13889 /* Set `addend'. */
13894 info->callbacks->einfo
13895 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13896 input_bfd, (int) r_type, sym_name);
13898 bfd_set_error (bfd_error_bad_value);
13904 case R_PPC64_TLSGD:
13905 case R_PPC64_TLSLD:
13906 case R_PPC64_TOCSAVE:
13907 case R_PPC64_GNU_VTINHERIT:
13908 case R_PPC64_GNU_VTENTRY:
13911 /* GOT16 relocations. Like an ADDR16 using the symbol's
13912 address in the GOT as relocation value instead of the
13913 symbol's value itself. Also, create a GOT entry for the
13914 symbol and put the symbol value there. */
13915 case R_PPC64_GOT_TLSGD16:
13916 case R_PPC64_GOT_TLSGD16_LO:
13917 case R_PPC64_GOT_TLSGD16_HI:
13918 case R_PPC64_GOT_TLSGD16_HA:
13919 tls_type = TLS_TLS | TLS_GD;
13922 case R_PPC64_GOT_TLSLD16:
13923 case R_PPC64_GOT_TLSLD16_LO:
13924 case R_PPC64_GOT_TLSLD16_HI:
13925 case R_PPC64_GOT_TLSLD16_HA:
13926 tls_type = TLS_TLS | TLS_LD;
13929 case R_PPC64_GOT_TPREL16_DS:
13930 case R_PPC64_GOT_TPREL16_LO_DS:
13931 case R_PPC64_GOT_TPREL16_HI:
13932 case R_PPC64_GOT_TPREL16_HA:
13933 tls_type = TLS_TLS | TLS_TPREL;
13936 case R_PPC64_GOT_DTPREL16_DS:
13937 case R_PPC64_GOT_DTPREL16_LO_DS:
13938 case R_PPC64_GOT_DTPREL16_HI:
13939 case R_PPC64_GOT_DTPREL16_HA:
13940 tls_type = TLS_TLS | TLS_DTPREL;
13943 case R_PPC64_GOT16:
13944 case R_PPC64_GOT16_LO:
13945 case R_PPC64_GOT16_HI:
13946 case R_PPC64_GOT16_HA:
13947 case R_PPC64_GOT16_DS:
13948 case R_PPC64_GOT16_LO_DS:
13951 /* Relocation is to the entry for this symbol in the global
13956 unsigned long indx = 0;
13957 struct got_entry *ent;
13959 if (tls_type == (TLS_TLS | TLS_LD)
13961 || !h->elf.def_dynamic))
13962 ent = ppc64_tlsld_got (input_bfd);
13968 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13969 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13972 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13973 /* This is actually a static link, or it is a
13974 -Bsymbolic link and the symbol is defined
13975 locally, or the symbol was forced to be local
13976 because of a version file. */
13980 BFD_ASSERT (h->elf.dynindx != -1);
13981 indx = h->elf.dynindx;
13982 unresolved_reloc = FALSE;
13984 ent = h->elf.got.glist;
13988 if (local_got_ents == NULL)
13990 ent = local_got_ents[r_symndx];
13993 for (; ent != NULL; ent = ent->next)
13994 if (ent->addend == orig_rel.r_addend
13995 && ent->owner == input_bfd
13996 && ent->tls_type == tls_type)
14002 if (ent->is_indirect)
14003 ent = ent->got.ent;
14004 offp = &ent->got.offset;
14005 got = ppc64_elf_tdata (ent->owner)->got;
14009 /* The offset must always be a multiple of 8. We use the
14010 least significant bit to record whether we have already
14011 processed this entry. */
14013 if ((off & 1) != 0)
14017 /* Generate relocs for the dynamic linker, except in
14018 the case of TLSLD where we'll use one entry per
14026 ? h->elf.type == STT_GNU_IFUNC
14027 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14029 relgot = htab->elf.irelplt;
14030 else if ((info->shared || indx != 0)
14032 || (tls_type == (TLS_TLS | TLS_LD)
14033 && !h->elf.def_dynamic)
14034 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14035 || h->elf.root.type != bfd_link_hash_undefweak))
14036 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14037 if (relgot != NULL)
14039 outrel.r_offset = (got->output_section->vma
14040 + got->output_offset
14042 outrel.r_addend = addend;
14043 if (tls_type & (TLS_LD | TLS_GD))
14045 outrel.r_addend = 0;
14046 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14047 if (tls_type == (TLS_TLS | TLS_GD))
14049 loc = relgot->contents;
14050 loc += (relgot->reloc_count++
14051 * sizeof (Elf64_External_Rela));
14052 bfd_elf64_swap_reloca_out (output_bfd,
14054 outrel.r_offset += 8;
14055 outrel.r_addend = addend;
14057 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14060 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14061 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14062 else if (tls_type == (TLS_TLS | TLS_TPREL))
14063 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14064 else if (indx != 0)
14065 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14069 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14071 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14073 /* Write the .got section contents for the sake
14075 loc = got->contents + off;
14076 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14080 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14082 outrel.r_addend += relocation;
14083 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14084 outrel.r_addend -= htab->elf.tls_sec->vma;
14086 loc = relgot->contents;
14087 loc += (relgot->reloc_count++
14088 * sizeof (Elf64_External_Rela));
14089 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14092 /* Init the .got section contents here if we're not
14093 emitting a reloc. */
14096 relocation += addend;
14097 if (tls_type == (TLS_TLS | TLS_LD))
14099 else if (tls_type != 0)
14101 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14102 if (tls_type == (TLS_TLS | TLS_TPREL))
14103 relocation += DTP_OFFSET - TP_OFFSET;
14105 if (tls_type == (TLS_TLS | TLS_GD))
14107 bfd_put_64 (output_bfd, relocation,
14108 got->contents + off + 8);
14113 bfd_put_64 (output_bfd, relocation,
14114 got->contents + off);
14118 if (off >= (bfd_vma) -2)
14121 relocation = got->output_section->vma + got->output_offset + off;
14122 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14126 case R_PPC64_PLT16_HA:
14127 case R_PPC64_PLT16_HI:
14128 case R_PPC64_PLT16_LO:
14129 case R_PPC64_PLT32:
14130 case R_PPC64_PLT64:
14131 /* Relocation is to the entry for this symbol in the
14132 procedure linkage table. */
14134 /* Resolve a PLT reloc against a local symbol directly,
14135 without using the procedure linkage table. */
14139 /* It's possible that we didn't make a PLT entry for this
14140 symbol. This happens when statically linking PIC code,
14141 or when using -Bsymbolic. Go find a match if there is a
14143 if (htab->elf.splt != NULL)
14145 struct plt_entry *ent;
14146 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14147 if (ent->plt.offset != (bfd_vma) -1
14148 && ent->addend == orig_rel.r_addend)
14150 relocation = (htab->elf.splt->output_section->vma
14151 + htab->elf.splt->output_offset
14152 + ent->plt.offset);
14153 unresolved_reloc = FALSE;
14160 /* Relocation value is TOC base. */
14161 relocation = TOCstart;
14162 if (r_symndx == STN_UNDEF)
14163 relocation += htab->stub_group[input_section->id].toc_off;
14164 else if (unresolved_reloc)
14166 else if (sec != NULL && sec->id <= htab->top_id)
14167 relocation += htab->stub_group[sec->id].toc_off;
14169 unresolved_reloc = TRUE;
14172 /* TOC16 relocs. We want the offset relative to the TOC base,
14173 which is the address of the start of the TOC plus 0x8000.
14174 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14176 case R_PPC64_TOC16:
14177 case R_PPC64_TOC16_LO:
14178 case R_PPC64_TOC16_HI:
14179 case R_PPC64_TOC16_DS:
14180 case R_PPC64_TOC16_LO_DS:
14181 case R_PPC64_TOC16_HA:
14182 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14185 /* Relocate against the beginning of the section. */
14186 case R_PPC64_SECTOFF:
14187 case R_PPC64_SECTOFF_LO:
14188 case R_PPC64_SECTOFF_HI:
14189 case R_PPC64_SECTOFF_DS:
14190 case R_PPC64_SECTOFF_LO_DS:
14191 case R_PPC64_SECTOFF_HA:
14193 addend -= sec->output_section->vma;
14196 case R_PPC64_REL16:
14197 case R_PPC64_REL16_LO:
14198 case R_PPC64_REL16_HI:
14199 case R_PPC64_REL16_HA:
14202 case R_PPC64_REL14:
14203 case R_PPC64_REL14_BRNTAKEN:
14204 case R_PPC64_REL14_BRTAKEN:
14205 case R_PPC64_REL24:
14208 case R_PPC64_TPREL16:
14209 case R_PPC64_TPREL16_LO:
14210 case R_PPC64_TPREL16_HI:
14211 case R_PPC64_TPREL16_HA:
14212 case R_PPC64_TPREL16_DS:
14213 case R_PPC64_TPREL16_LO_DS:
14214 case R_PPC64_TPREL16_HIGH:
14215 case R_PPC64_TPREL16_HIGHA:
14216 case R_PPC64_TPREL16_HIGHER:
14217 case R_PPC64_TPREL16_HIGHERA:
14218 case R_PPC64_TPREL16_HIGHEST:
14219 case R_PPC64_TPREL16_HIGHESTA:
14221 && h->elf.root.type == bfd_link_hash_undefweak
14222 && h->elf.dynindx == -1)
14224 /* Make this relocation against an undefined weak symbol
14225 resolve to zero. This is really just a tweak, since
14226 code using weak externs ought to check that they are
14227 defined before using them. */
14228 bfd_byte *p = contents + rel->r_offset - d_offset;
14230 insn = bfd_get_32 (output_bfd, p);
14231 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14233 bfd_put_32 (output_bfd, insn, p);
14236 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14238 /* The TPREL16 relocs shouldn't really be used in shared
14239 libs as they will result in DT_TEXTREL being set, but
14240 support them anyway. */
14244 case R_PPC64_DTPREL16:
14245 case R_PPC64_DTPREL16_LO:
14246 case R_PPC64_DTPREL16_HI:
14247 case R_PPC64_DTPREL16_HA:
14248 case R_PPC64_DTPREL16_DS:
14249 case R_PPC64_DTPREL16_LO_DS:
14250 case R_PPC64_DTPREL16_HIGH:
14251 case R_PPC64_DTPREL16_HIGHA:
14252 case R_PPC64_DTPREL16_HIGHER:
14253 case R_PPC64_DTPREL16_HIGHERA:
14254 case R_PPC64_DTPREL16_HIGHEST:
14255 case R_PPC64_DTPREL16_HIGHESTA:
14256 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14259 case R_PPC64_ADDR64_LOCAL:
14260 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14265 case R_PPC64_DTPMOD64:
14270 case R_PPC64_TPREL64:
14271 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14274 case R_PPC64_DTPREL64:
14275 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14278 /* Relocations that may need to be propagated if this is a
14280 case R_PPC64_REL30:
14281 case R_PPC64_REL32:
14282 case R_PPC64_REL64:
14283 case R_PPC64_ADDR14:
14284 case R_PPC64_ADDR14_BRNTAKEN:
14285 case R_PPC64_ADDR14_BRTAKEN:
14286 case R_PPC64_ADDR16:
14287 case R_PPC64_ADDR16_DS:
14288 case R_PPC64_ADDR16_HA:
14289 case R_PPC64_ADDR16_HI:
14290 case R_PPC64_ADDR16_HIGH:
14291 case R_PPC64_ADDR16_HIGHA:
14292 case R_PPC64_ADDR16_HIGHER:
14293 case R_PPC64_ADDR16_HIGHERA:
14294 case R_PPC64_ADDR16_HIGHEST:
14295 case R_PPC64_ADDR16_HIGHESTA:
14296 case R_PPC64_ADDR16_LO:
14297 case R_PPC64_ADDR16_LO_DS:
14298 case R_PPC64_ADDR24:
14299 case R_PPC64_ADDR32:
14300 case R_PPC64_ADDR64:
14301 case R_PPC64_UADDR16:
14302 case R_PPC64_UADDR32:
14303 case R_PPC64_UADDR64:
14305 if ((input_section->flags & SEC_ALLOC) == 0)
14308 if (NO_OPD_RELOCS && is_opd)
14313 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14314 || h->elf.root.type != bfd_link_hash_undefweak)
14315 && (must_be_dyn_reloc (info, r_type)
14316 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14317 || (ELIMINATE_COPY_RELOCS
14320 && h->elf.dynindx != -1
14321 && !h->elf.non_got_ref
14322 && !h->elf.def_regular)
14325 ? h->elf.type == STT_GNU_IFUNC
14326 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14328 bfd_boolean skip, relocate;
14332 /* When generating a dynamic object, these relocations
14333 are copied into the output file to be resolved at run
14339 out_off = _bfd_elf_section_offset (output_bfd, info,
14340 input_section, rel->r_offset);
14341 if (out_off == (bfd_vma) -1)
14343 else if (out_off == (bfd_vma) -2)
14344 skip = TRUE, relocate = TRUE;
14345 out_off += (input_section->output_section->vma
14346 + input_section->output_offset);
14347 outrel.r_offset = out_off;
14348 outrel.r_addend = rel->r_addend;
14350 /* Optimize unaligned reloc use. */
14351 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14352 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14353 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14354 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14355 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14356 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14357 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14358 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14359 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14362 memset (&outrel, 0, sizeof outrel);
14363 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14365 && r_type != R_PPC64_TOC)
14367 BFD_ASSERT (h->elf.dynindx != -1);
14368 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14372 /* This symbol is local, or marked to become local,
14373 or this is an opd section reloc which must point
14374 at a local function. */
14375 outrel.r_addend += relocation;
14376 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14378 if (is_opd && h != NULL)
14380 /* Lie about opd entries. This case occurs
14381 when building shared libraries and we
14382 reference a function in another shared
14383 lib. The same thing happens for a weak
14384 definition in an application that's
14385 overridden by a strong definition in a
14386 shared lib. (I believe this is a generic
14387 bug in binutils handling of weak syms.)
14388 In these cases we won't use the opd
14389 entry in this lib. */
14390 unresolved_reloc = FALSE;
14393 && r_type == R_PPC64_ADDR64
14395 ? h->elf.type == STT_GNU_IFUNC
14396 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14397 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14400 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14402 /* We need to relocate .opd contents for ld.so.
14403 Prelink also wants simple and consistent rules
14404 for relocs. This make all RELATIVE relocs have
14405 *r_offset equal to r_addend. */
14414 ? h->elf.type == STT_GNU_IFUNC
14415 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14417 info->callbacks->einfo
14418 (_("%P: %H: %s for indirect "
14419 "function `%T' unsupported\n"),
14420 input_bfd, input_section, rel->r_offset,
14421 ppc64_elf_howto_table[r_type]->name,
14425 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14427 else if (sec == NULL || sec->owner == NULL)
14429 bfd_set_error (bfd_error_bad_value);
14436 osec = sec->output_section;
14437 indx = elf_section_data (osec)->dynindx;
14441 if ((osec->flags & SEC_READONLY) == 0
14442 && htab->elf.data_index_section != NULL)
14443 osec = htab->elf.data_index_section;
14445 osec = htab->elf.text_index_section;
14446 indx = elf_section_data (osec)->dynindx;
14448 BFD_ASSERT (indx != 0);
14450 /* We are turning this relocation into one
14451 against a section symbol, so subtract out
14452 the output section's address but not the
14453 offset of the input section in the output
14455 outrel.r_addend -= osec->vma;
14458 outrel.r_info = ELF64_R_INFO (indx, r_type);
14462 sreloc = elf_section_data (input_section)->sreloc;
14464 ? h->elf.type == STT_GNU_IFUNC
14465 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14466 sreloc = htab->elf.irelplt;
14467 if (sreloc == NULL)
14470 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14473 loc = sreloc->contents;
14474 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14475 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14477 /* If this reloc is against an external symbol, it will
14478 be computed at runtime, so there's no need to do
14479 anything now. However, for the sake of prelink ensure
14480 that the section contents are a known value. */
14483 unresolved_reloc = FALSE;
14484 /* The value chosen here is quite arbitrary as ld.so
14485 ignores section contents except for the special
14486 case of .opd where the contents might be accessed
14487 before relocation. Choose zero, as that won't
14488 cause reloc overflow. */
14491 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14492 to improve backward compatibility with older
14494 if (r_type == R_PPC64_ADDR64)
14495 addend = outrel.r_addend;
14496 /* Adjust pc_relative relocs to have zero in *r_offset. */
14497 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14498 addend = (input_section->output_section->vma
14499 + input_section->output_offset
14506 case R_PPC64_GLOB_DAT:
14507 case R_PPC64_JMP_SLOT:
14508 case R_PPC64_JMP_IREL:
14509 case R_PPC64_RELATIVE:
14510 /* We shouldn't ever see these dynamic relocs in relocatable
14512 /* Fall through. */
14514 case R_PPC64_PLTGOT16:
14515 case R_PPC64_PLTGOT16_DS:
14516 case R_PPC64_PLTGOT16_HA:
14517 case R_PPC64_PLTGOT16_HI:
14518 case R_PPC64_PLTGOT16_LO:
14519 case R_PPC64_PLTGOT16_LO_DS:
14520 case R_PPC64_PLTREL32:
14521 case R_PPC64_PLTREL64:
14522 /* These ones haven't been implemented yet. */
14524 info->callbacks->einfo
14525 (_("%P: %B: %s is not supported for `%T'\n"),
14527 ppc64_elf_howto_table[r_type]->name, sym_name);
14529 bfd_set_error (bfd_error_invalid_operation);
14534 /* Multi-instruction sequences that access the TOC can be
14535 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14536 to nop; addi rb,r2,x; */
14542 case R_PPC64_GOT_TLSLD16_HI:
14543 case R_PPC64_GOT_TLSGD16_HI:
14544 case R_PPC64_GOT_TPREL16_HI:
14545 case R_PPC64_GOT_DTPREL16_HI:
14546 case R_PPC64_GOT16_HI:
14547 case R_PPC64_TOC16_HI:
14548 /* These relocs would only be useful if building up an
14549 offset to later add to r2, perhaps in an indexed
14550 addressing mode instruction. Don't try to optimize.
14551 Unfortunately, the possibility of someone building up an
14552 offset like this or even with the HA relocs, means that
14553 we need to check the high insn when optimizing the low
14557 case R_PPC64_GOT_TLSLD16_HA:
14558 case R_PPC64_GOT_TLSGD16_HA:
14559 case R_PPC64_GOT_TPREL16_HA:
14560 case R_PPC64_GOT_DTPREL16_HA:
14561 case R_PPC64_GOT16_HA:
14562 case R_PPC64_TOC16_HA:
14563 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14564 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14566 bfd_byte *p = contents + (rel->r_offset & ~3);
14567 bfd_put_32 (input_bfd, NOP, p);
14571 case R_PPC64_GOT_TLSLD16_LO:
14572 case R_PPC64_GOT_TLSGD16_LO:
14573 case R_PPC64_GOT_TPREL16_LO_DS:
14574 case R_PPC64_GOT_DTPREL16_LO_DS:
14575 case R_PPC64_GOT16_LO:
14576 case R_PPC64_GOT16_LO_DS:
14577 case R_PPC64_TOC16_LO:
14578 case R_PPC64_TOC16_LO_DS:
14579 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14580 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14582 bfd_byte *p = contents + (rel->r_offset & ~3);
14583 insn = bfd_get_32 (input_bfd, p);
14584 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14586 /* Transform addic to addi when we change reg. */
14587 insn &= ~((0x3f << 26) | (0x1f << 16));
14588 insn |= (14u << 26) | (2 << 16);
14592 insn &= ~(0x1f << 16);
14595 bfd_put_32 (input_bfd, insn, p);
14600 /* Do any further special processing. */
14601 howto = ppc64_elf_howto_table[(int) r_type];
14607 case R_PPC64_REL16_HA:
14608 case R_PPC64_ADDR16_HA:
14609 case R_PPC64_ADDR16_HIGHA:
14610 case R_PPC64_ADDR16_HIGHERA:
14611 case R_PPC64_ADDR16_HIGHESTA:
14612 case R_PPC64_TOC16_HA:
14613 case R_PPC64_SECTOFF_HA:
14614 case R_PPC64_TPREL16_HA:
14615 case R_PPC64_TPREL16_HIGHA:
14616 case R_PPC64_TPREL16_HIGHERA:
14617 case R_PPC64_TPREL16_HIGHESTA:
14618 case R_PPC64_DTPREL16_HA:
14619 case R_PPC64_DTPREL16_HIGHA:
14620 case R_PPC64_DTPREL16_HIGHERA:
14621 case R_PPC64_DTPREL16_HIGHESTA:
14622 /* It's just possible that this symbol is a weak symbol
14623 that's not actually defined anywhere. In that case,
14624 'sec' would be NULL, and we should leave the symbol
14625 alone (it will be set to zero elsewhere in the link). */
14630 case R_PPC64_GOT16_HA:
14631 case R_PPC64_PLTGOT16_HA:
14632 case R_PPC64_PLT16_HA:
14633 case R_PPC64_GOT_TLSGD16_HA:
14634 case R_PPC64_GOT_TLSLD16_HA:
14635 case R_PPC64_GOT_TPREL16_HA:
14636 case R_PPC64_GOT_DTPREL16_HA:
14637 /* Add 0x10000 if sign bit in 0:15 is set.
14638 Bits 0:15 are not used. */
14642 case R_PPC64_ADDR16_DS:
14643 case R_PPC64_ADDR16_LO_DS:
14644 case R_PPC64_GOT16_DS:
14645 case R_PPC64_GOT16_LO_DS:
14646 case R_PPC64_PLT16_LO_DS:
14647 case R_PPC64_SECTOFF_DS:
14648 case R_PPC64_SECTOFF_LO_DS:
14649 case R_PPC64_TOC16_DS:
14650 case R_PPC64_TOC16_LO_DS:
14651 case R_PPC64_PLTGOT16_DS:
14652 case R_PPC64_PLTGOT16_LO_DS:
14653 case R_PPC64_GOT_TPREL16_DS:
14654 case R_PPC64_GOT_TPREL16_LO_DS:
14655 case R_PPC64_GOT_DTPREL16_DS:
14656 case R_PPC64_GOT_DTPREL16_LO_DS:
14657 case R_PPC64_TPREL16_DS:
14658 case R_PPC64_TPREL16_LO_DS:
14659 case R_PPC64_DTPREL16_DS:
14660 case R_PPC64_DTPREL16_LO_DS:
14661 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14663 /* If this reloc is against an lq insn, then the value must be
14664 a multiple of 16. This is somewhat of a hack, but the
14665 "correct" way to do this by defining _DQ forms of all the
14666 _DS relocs bloats all reloc switches in this file. It
14667 doesn't seem to make much sense to use any of these relocs
14668 in data, so testing the insn should be safe. */
14669 if ((insn & (0x3f << 26)) == (56u << 26))
14671 if (((relocation + addend) & mask) != 0)
14673 info->callbacks->einfo
14674 (_("%P: %H: error: %s not a multiple of %u\n"),
14675 input_bfd, input_section, rel->r_offset,
14678 bfd_set_error (bfd_error_bad_value);
14685 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14686 because such sections are not SEC_ALLOC and thus ld.so will
14687 not process them. */
14688 if (unresolved_reloc
14689 && !((input_section->flags & SEC_DEBUGGING) != 0
14690 && h->elf.def_dynamic)
14691 && _bfd_elf_section_offset (output_bfd, info, input_section,
14692 rel->r_offset) != (bfd_vma) -1)
14694 info->callbacks->einfo
14695 (_("%P: %H: unresolvable %s against `%T'\n"),
14696 input_bfd, input_section, rel->r_offset,
14698 h->elf.root.root.string);
14702 /* 16-bit fields in insns mostly have signed values, but a
14703 few insns have 16-bit unsigned values. Really, we should
14704 have different reloc types. */
14705 if (howto->complain_on_overflow != complain_overflow_dont
14706 && howto->dst_mask == 0xffff
14707 && (input_section->flags & SEC_CODE) != 0)
14709 enum complain_overflow complain = complain_overflow_signed;
14711 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14712 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14713 complain = complain_overflow_bitfield;
14714 else if (howto->rightshift == 0
14715 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14716 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14717 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14718 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14719 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14720 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14721 complain = complain_overflow_unsigned;
14722 if (howto->complain_on_overflow != complain)
14724 alt_howto = *howto;
14725 alt_howto.complain_on_overflow = complain;
14726 howto = &alt_howto;
14730 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14731 rel->r_offset, relocation, addend);
14733 if (r != bfd_reloc_ok)
14735 char *more_info = NULL;
14736 const char *reloc_name = howto->name;
14738 if (reloc_dest != DEST_NORMAL)
14740 more_info = bfd_malloc (strlen (reloc_name) + 8);
14741 if (more_info != NULL)
14743 strcpy (more_info, reloc_name);
14744 strcat (more_info, (reloc_dest == DEST_OPD
14745 ? " (OPD)" : " (stub)"));
14746 reloc_name = more_info;
14750 if (r == bfd_reloc_overflow)
14755 && h->elf.root.type == bfd_link_hash_undefweak
14756 && howto->pc_relative)
14758 /* Assume this is a call protected by other code that
14759 detects the symbol is undefined. If this is the case,
14760 we can safely ignore the overflow. If not, the
14761 program is hosed anyway, and a little warning isn't
14767 if (!((*info->callbacks->reloc_overflow)
14768 (info, &h->elf.root, sym_name,
14769 reloc_name, orig_rel.r_addend,
14770 input_bfd, input_section, rel->r_offset)))
14775 info->callbacks->einfo
14776 (_("%P: %H: %s against `%T': error %d\n"),
14777 input_bfd, input_section, rel->r_offset,
14778 reloc_name, sym_name, (int) r);
14781 if (more_info != NULL)
14786 /* If we're emitting relocations, then shortly after this function
14787 returns, reloc offsets and addends for this section will be
14788 adjusted. Worse, reloc symbol indices will be for the output
14789 file rather than the input. Save a copy of the relocs for
14790 opd_entry_value. */
14791 if (is_opd && (info->emitrelocations || info->relocatable))
14794 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14795 rel = bfd_alloc (input_bfd, amt);
14796 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14797 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14800 memcpy (rel, relocs, amt);
14805 /* Adjust the value of any local symbols in opd sections. */
14808 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14809 const char *name ATTRIBUTE_UNUSED,
14810 Elf_Internal_Sym *elfsym,
14811 asection *input_sec,
14812 struct elf_link_hash_entry *h)
14814 struct _opd_sec_data *opd;
14821 opd = get_opd_info (input_sec);
14822 if (opd == NULL || opd->adjust == NULL)
14825 value = elfsym->st_value - input_sec->output_offset;
14826 if (!info->relocatable)
14827 value -= input_sec->output_section->vma;
14829 adjust = opd->adjust[value / 8];
14833 elfsym->st_value += adjust;
14837 /* Finish up dynamic symbol handling. We set the contents of various
14838 dynamic sections here. */
14841 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14842 struct bfd_link_info *info,
14843 struct elf_link_hash_entry *h,
14844 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14846 struct ppc_link_hash_table *htab;
14847 struct plt_entry *ent;
14848 Elf_Internal_Rela rela;
14851 htab = ppc_hash_table (info);
14855 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14856 if (ent->plt.offset != (bfd_vma) -1)
14858 /* This symbol has an entry in the procedure linkage
14859 table. Set it up. */
14860 if (!htab->elf.dynamic_sections_created
14861 || h->dynindx == -1)
14863 BFD_ASSERT (h->type == STT_GNU_IFUNC
14865 && (h->root.type == bfd_link_hash_defined
14866 || h->root.type == bfd_link_hash_defweak));
14867 rela.r_offset = (htab->elf.iplt->output_section->vma
14868 + htab->elf.iplt->output_offset
14869 + ent->plt.offset);
14871 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14873 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14874 rela.r_addend = (h->root.u.def.value
14875 + h->root.u.def.section->output_offset
14876 + h->root.u.def.section->output_section->vma
14878 loc = (htab->elf.irelplt->contents
14879 + (htab->elf.irelplt->reloc_count++
14880 * sizeof (Elf64_External_Rela)));
14884 rela.r_offset = (htab->elf.splt->output_section->vma
14885 + htab->elf.splt->output_offset
14886 + ent->plt.offset);
14887 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14888 rela.r_addend = ent->addend;
14889 loc = (htab->elf.srelplt->contents
14890 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14891 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14893 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14895 if (!htab->opd_abi)
14897 if (!h->def_regular)
14899 /* Mark the symbol as undefined, rather than as
14900 defined in glink. Leave the value if there were
14901 any relocations where pointer equality matters
14902 (this is a clue for the dynamic linker, to make
14903 function pointer comparisons work between an
14904 application and shared library), otherwise set it
14906 sym->st_shndx = SHN_UNDEF;
14907 if (!h->pointer_equality_needed)
14909 else if (!h->ref_regular_nonweak)
14911 /* This breaks function pointer comparisons, but
14912 that is better than breaking tests for a NULL
14913 function pointer. */
14922 /* This symbol needs a copy reloc. Set it up. */
14924 if (h->dynindx == -1
14925 || (h->root.type != bfd_link_hash_defined
14926 && h->root.type != bfd_link_hash_defweak)
14927 || htab->relbss == NULL)
14930 rela.r_offset = (h->root.u.def.value
14931 + h->root.u.def.section->output_section->vma
14932 + h->root.u.def.section->output_offset);
14933 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14935 loc = htab->relbss->contents;
14936 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14937 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14943 /* Used to decide how to sort relocs in an optimal manner for the
14944 dynamic linker, before writing them out. */
14946 static enum elf_reloc_type_class
14947 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14948 const asection *rel_sec,
14949 const Elf_Internal_Rela *rela)
14951 enum elf_ppc64_reloc_type r_type;
14952 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14954 if (rel_sec == htab->elf.irelplt)
14955 return reloc_class_ifunc;
14957 r_type = ELF64_R_TYPE (rela->r_info);
14960 case R_PPC64_RELATIVE:
14961 return reloc_class_relative;
14962 case R_PPC64_JMP_SLOT:
14963 return reloc_class_plt;
14965 return reloc_class_copy;
14967 return reloc_class_normal;
14971 /* Finish up the dynamic sections. */
14974 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14975 struct bfd_link_info *info)
14977 struct ppc_link_hash_table *htab;
14981 htab = ppc_hash_table (info);
14985 dynobj = htab->elf.dynobj;
14986 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14988 if (htab->elf.dynamic_sections_created)
14990 Elf64_External_Dyn *dyncon, *dynconend;
14992 if (sdyn == NULL || htab->elf.sgot == NULL)
14995 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14996 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14997 for (; dyncon < dynconend; dyncon++)
14999 Elf_Internal_Dyn dyn;
15002 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15009 case DT_PPC64_GLINK:
15011 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15012 /* We stupidly defined DT_PPC64_GLINK to be the start
15013 of glink rather than the first entry point, which is
15014 what ld.so needs, and now have a bigger stub to
15015 support automatic multiple TOCs. */
15016 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15020 s = bfd_get_section_by_name (output_bfd, ".opd");
15023 dyn.d_un.d_ptr = s->vma;
15027 if (htab->do_multi_toc && htab->multi_toc_needed)
15028 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15031 case DT_PPC64_OPDSZ:
15032 s = bfd_get_section_by_name (output_bfd, ".opd");
15035 dyn.d_un.d_val = s->size;
15039 s = htab->elf.splt;
15040 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15044 s = htab->elf.srelplt;
15045 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15049 dyn.d_un.d_val = htab->elf.srelplt->size;
15053 /* Don't count procedure linkage table relocs in the
15054 overall reloc count. */
15055 s = htab->elf.srelplt;
15058 dyn.d_un.d_val -= s->size;
15062 /* We may not be using the standard ELF linker script.
15063 If .rela.plt is the first .rela section, we adjust
15064 DT_RELA to not include it. */
15065 s = htab->elf.srelplt;
15068 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15070 dyn.d_un.d_ptr += s->size;
15074 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15078 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15080 /* Fill in the first entry in the global offset table.
15081 We use it to hold the link-time TOCbase. */
15082 bfd_put_64 (output_bfd,
15083 elf_gp (output_bfd) + TOC_BASE_OFF,
15084 htab->elf.sgot->contents);
15086 /* Set .got entry size. */
15087 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15090 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15092 /* Set .plt entry size. */
15093 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15094 = PLT_ENTRY_SIZE (htab);
15097 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15098 brlt ourselves if emitrelocations. */
15099 if (htab->brlt != NULL
15100 && htab->brlt->reloc_count != 0
15101 && !_bfd_elf_link_output_relocs (output_bfd,
15103 elf_section_data (htab->brlt)->rela.hdr,
15104 elf_section_data (htab->brlt)->relocs,
15108 if (htab->glink != NULL
15109 && htab->glink->reloc_count != 0
15110 && !_bfd_elf_link_output_relocs (output_bfd,
15112 elf_section_data (htab->glink)->rela.hdr,
15113 elf_section_data (htab->glink)->relocs,
15118 if (htab->glink_eh_frame != NULL
15119 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15120 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15121 htab->glink_eh_frame,
15122 htab->glink_eh_frame->contents))
15125 /* We need to handle writing out multiple GOT sections ourselves,
15126 since we didn't add them to DYNOBJ. We know dynobj is the first
15128 while ((dynobj = dynobj->link.next) != NULL)
15132 if (!is_ppc64_elf (dynobj))
15135 s = ppc64_elf_tdata (dynobj)->got;
15138 && s->output_section != bfd_abs_section_ptr
15139 && !bfd_set_section_contents (output_bfd, s->output_section,
15140 s->contents, s->output_offset,
15143 s = ppc64_elf_tdata (dynobj)->relgot;
15146 && s->output_section != bfd_abs_section_ptr
15147 && !bfd_set_section_contents (output_bfd, s->output_section,
15148 s->contents, s->output_offset,
15156 #include "elf64-target.h"
15158 /* FreeBSD support */
15160 #undef TARGET_LITTLE_SYM
15161 #undef TARGET_LITTLE_NAME
15163 #undef TARGET_BIG_SYM
15164 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15165 #undef TARGET_BIG_NAME
15166 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15169 #define ELF_OSABI ELFOSABI_FREEBSD
15172 #define elf64_bed elf64_powerpc_fbsd_bed
15174 #include "elf64-target.h"