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;
4965 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4967 if (opd != NULL && opd->size != 0)
4969 if (abiversion (ibfd) == 0)
4970 set_abiversion (ibfd, 1);
4971 else if (abiversion (ibfd) == 2)
4973 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4975 ibfd, abiversion (ibfd));
4976 bfd_set_error (bfd_error_bad_value);
4980 if ((ibfd->flags & DYNAMIC) == 0
4981 && (opd->flags & SEC_RELOC) != 0
4982 && opd->reloc_count != 0
4983 && !bfd_is_abs_section (opd->output_section))
4985 /* Garbage collection needs some extra help with .opd sections.
4986 We don't want to necessarily keep everything referenced by
4987 relocs in .opd, as that would keep all functions. Instead,
4988 if we reference an .opd symbol (a function descriptor), we
4989 want to keep the function code symbol's section. This is
4990 easy for global symbols, but for local syms we need to keep
4991 information about the associated function section. */
4993 asection **opd_sym_map;
4995 amt = opd->size * sizeof (*opd_sym_map) / 8;
4996 opd_sym_map = bfd_zalloc (ibfd, amt);
4997 if (opd_sym_map == NULL)
4999 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5000 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5001 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5005 if (!is_ppc64_elf (info->output_bfd))
5007 htab = ppc_hash_table (info);
5011 /* For input files without an explicit abiversion in e_flags
5012 we should have flagged any with symbol st_other bits set
5013 as ELFv1 and above flagged those with .opd as ELFv2.
5014 Set the output abiversion if not yet set, and for any input
5015 still ambiguous, take its abiversion from the output.
5016 Differences in ABI are reported later. */
5017 if (abiversion (info->output_bfd) == 0)
5018 set_abiversion (info->output_bfd, abiversion (ibfd));
5019 else if (abiversion (ibfd) == 0)
5020 set_abiversion (ibfd, abiversion (info->output_bfd));
5022 p = &htab->dot_syms;
5023 while ((eh = *p) != NULL)
5026 if (&eh->elf == htab->elf.hgot)
5028 else if (htab->elf.hgot == NULL
5029 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5030 htab->elf.hgot = &eh->elf;
5031 else if (!add_symbol_adjust (eh, info))
5033 p = &eh->u.next_dot_sym;
5036 /* Clear the list for non-ppc64 input files. */
5037 p = &htab->dot_syms;
5038 while ((eh = *p) != NULL)
5041 p = &eh->u.next_dot_sym;
5044 /* We need to fix the undefs list for any syms we have twiddled to
5046 if (htab->twiddled_syms)
5048 bfd_link_repair_undef_list (&htab->elf.root);
5049 htab->twiddled_syms = 0;
5054 /* Undo hash table changes when an --as-needed input file is determined
5055 not to be needed. */
5058 ppc64_elf_notice_as_needed (bfd *ibfd,
5059 struct bfd_link_info *info,
5060 enum notice_asneeded_action act)
5062 if (act == notice_not_needed)
5064 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5069 htab->dot_syms = NULL;
5071 return _bfd_elf_notice_as_needed (ibfd, info, act);
5074 /* If --just-symbols against a final linked binary, then assume we need
5075 toc adjusting stubs when calling functions defined there. */
5078 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5080 if ((sec->flags & SEC_CODE) != 0
5081 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5082 && is_ppc64_elf (sec->owner))
5084 if (abiversion (sec->owner) >= 2
5085 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5086 sec->has_toc_reloc = 1;
5088 _bfd_elf_link_just_syms (sec, info);
5091 static struct plt_entry **
5092 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5093 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5095 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5096 struct plt_entry **local_plt;
5097 unsigned char *local_got_tls_masks;
5099 if (local_got_ents == NULL)
5101 bfd_size_type size = symtab_hdr->sh_info;
5103 size *= (sizeof (*local_got_ents)
5104 + sizeof (*local_plt)
5105 + sizeof (*local_got_tls_masks));
5106 local_got_ents = bfd_zalloc (abfd, size);
5107 if (local_got_ents == NULL)
5109 elf_local_got_ents (abfd) = local_got_ents;
5112 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5114 struct got_entry *ent;
5116 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5117 if (ent->addend == r_addend
5118 && ent->owner == abfd
5119 && ent->tls_type == tls_type)
5123 bfd_size_type amt = sizeof (*ent);
5124 ent = bfd_alloc (abfd, amt);
5127 ent->next = local_got_ents[r_symndx];
5128 ent->addend = r_addend;
5130 ent->tls_type = tls_type;
5131 ent->is_indirect = FALSE;
5132 ent->got.refcount = 0;
5133 local_got_ents[r_symndx] = ent;
5135 ent->got.refcount += 1;
5138 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5139 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5140 local_got_tls_masks[r_symndx] |= tls_type;
5142 return local_plt + r_symndx;
5146 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5148 struct plt_entry *ent;
5150 for (ent = *plist; ent != NULL; ent = ent->next)
5151 if (ent->addend == addend)
5155 bfd_size_type amt = sizeof (*ent);
5156 ent = bfd_alloc (abfd, amt);
5160 ent->addend = addend;
5161 ent->plt.refcount = 0;
5164 ent->plt.refcount += 1;
5169 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5171 return (r_type == R_PPC64_REL24
5172 || r_type == R_PPC64_REL14
5173 || r_type == R_PPC64_REL14_BRTAKEN
5174 || r_type == R_PPC64_REL14_BRNTAKEN
5175 || r_type == R_PPC64_ADDR24
5176 || r_type == R_PPC64_ADDR14
5177 || r_type == R_PPC64_ADDR14_BRTAKEN
5178 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5181 /* Look through the relocs for a section during the first phase, and
5182 calculate needed space in the global offset table, procedure
5183 linkage table, and dynamic reloc sections. */
5186 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5187 asection *sec, const Elf_Internal_Rela *relocs)
5189 struct ppc_link_hash_table *htab;
5190 Elf_Internal_Shdr *symtab_hdr;
5191 struct elf_link_hash_entry **sym_hashes;
5192 const Elf_Internal_Rela *rel;
5193 const Elf_Internal_Rela *rel_end;
5195 asection **opd_sym_map;
5196 struct elf_link_hash_entry *tga, *dottga;
5198 if (info->relocatable)
5201 /* Don't do anything special with non-loaded, non-alloced sections.
5202 In particular, any relocs in such sections should not affect GOT
5203 and PLT reference counting (ie. we don't allow them to create GOT
5204 or PLT entries), there's no possibility or desire to optimize TLS
5205 relocs, and there's not much point in propagating relocs to shared
5206 libs that the dynamic linker won't relocate. */
5207 if ((sec->flags & SEC_ALLOC) == 0)
5210 BFD_ASSERT (is_ppc64_elf (abfd));
5212 htab = ppc_hash_table (info);
5216 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5217 FALSE, FALSE, TRUE);
5218 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5219 FALSE, FALSE, TRUE);
5220 symtab_hdr = &elf_symtab_hdr (abfd);
5221 sym_hashes = elf_sym_hashes (abfd);
5224 if (ppc64_elf_section_data (sec) != NULL
5225 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5226 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5228 rel_end = relocs + sec->reloc_count;
5229 for (rel = relocs; rel < rel_end; rel++)
5231 unsigned long r_symndx;
5232 struct elf_link_hash_entry *h;
5233 enum elf_ppc64_reloc_type r_type;
5235 struct _ppc64_elf_section_data *ppc64_sec;
5236 struct plt_entry **ifunc;
5238 r_symndx = ELF64_R_SYM (rel->r_info);
5239 if (r_symndx < symtab_hdr->sh_info)
5243 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5244 h = elf_follow_link (h);
5246 /* PR15323, ref flags aren't set for references in the same
5248 h->root.non_ir_ref = 1;
5250 if (h == htab->elf.hgot)
5251 sec->has_toc_reloc = 1;
5258 if (h->type == STT_GNU_IFUNC)
5261 ifunc = &h->plt.plist;
5266 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5271 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5273 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5274 rel->r_addend, PLT_IFUNC);
5279 r_type = ELF64_R_TYPE (rel->r_info);
5280 if (is_branch_reloc (r_type))
5282 if (h != NULL && (h == tga || h == dottga))
5285 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5286 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5287 /* We have a new-style __tls_get_addr call with a marker
5291 /* Mark this section as having an old-style call. */
5292 sec->has_tls_get_addr_call = 1;
5295 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5297 && !update_plt_info (abfd, ifunc, rel->r_addend))
5305 /* These special tls relocs tie a call to __tls_get_addr with
5306 its parameter symbol. */
5309 case R_PPC64_GOT_TLSLD16:
5310 case R_PPC64_GOT_TLSLD16_LO:
5311 case R_PPC64_GOT_TLSLD16_HI:
5312 case R_PPC64_GOT_TLSLD16_HA:
5313 tls_type = TLS_TLS | TLS_LD;
5316 case R_PPC64_GOT_TLSGD16:
5317 case R_PPC64_GOT_TLSGD16_LO:
5318 case R_PPC64_GOT_TLSGD16_HI:
5319 case R_PPC64_GOT_TLSGD16_HA:
5320 tls_type = TLS_TLS | TLS_GD;
5323 case R_PPC64_GOT_TPREL16_DS:
5324 case R_PPC64_GOT_TPREL16_LO_DS:
5325 case R_PPC64_GOT_TPREL16_HI:
5326 case R_PPC64_GOT_TPREL16_HA:
5328 info->flags |= DF_STATIC_TLS;
5329 tls_type = TLS_TLS | TLS_TPREL;
5332 case R_PPC64_GOT_DTPREL16_DS:
5333 case R_PPC64_GOT_DTPREL16_LO_DS:
5334 case R_PPC64_GOT_DTPREL16_HI:
5335 case R_PPC64_GOT_DTPREL16_HA:
5336 tls_type = TLS_TLS | TLS_DTPREL;
5338 sec->has_tls_reloc = 1;
5342 case R_PPC64_GOT16_DS:
5343 case R_PPC64_GOT16_HA:
5344 case R_PPC64_GOT16_HI:
5345 case R_PPC64_GOT16_LO:
5346 case R_PPC64_GOT16_LO_DS:
5347 /* This symbol requires a global offset table entry. */
5348 sec->has_toc_reloc = 1;
5349 if (r_type == R_PPC64_GOT_TLSLD16
5350 || r_type == R_PPC64_GOT_TLSGD16
5351 || r_type == R_PPC64_GOT_TPREL16_DS
5352 || r_type == R_PPC64_GOT_DTPREL16_DS
5353 || r_type == R_PPC64_GOT16
5354 || r_type == R_PPC64_GOT16_DS)
5356 htab->do_multi_toc = 1;
5357 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5360 if (ppc64_elf_tdata (abfd)->got == NULL
5361 && !create_got_section (abfd, info))
5366 struct ppc_link_hash_entry *eh;
5367 struct got_entry *ent;
5369 eh = (struct ppc_link_hash_entry *) h;
5370 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5371 if (ent->addend == rel->r_addend
5372 && ent->owner == abfd
5373 && ent->tls_type == tls_type)
5377 bfd_size_type amt = sizeof (*ent);
5378 ent = bfd_alloc (abfd, amt);
5381 ent->next = eh->elf.got.glist;
5382 ent->addend = rel->r_addend;
5384 ent->tls_type = tls_type;
5385 ent->is_indirect = FALSE;
5386 ent->got.refcount = 0;
5387 eh->elf.got.glist = ent;
5389 ent->got.refcount += 1;
5390 eh->tls_mask |= tls_type;
5393 /* This is a global offset table entry for a local symbol. */
5394 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5395 rel->r_addend, tls_type))
5398 /* We may also need a plt entry if the symbol turns out to be
5400 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5402 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5407 case R_PPC64_PLT16_HA:
5408 case R_PPC64_PLT16_HI:
5409 case R_PPC64_PLT16_LO:
5412 /* This symbol requires a procedure linkage table entry. We
5413 actually build the entry in adjust_dynamic_symbol,
5414 because this might be a case of linking PIC code without
5415 linking in any dynamic objects, in which case we don't
5416 need to generate a procedure linkage table after all. */
5419 /* It does not make sense to have a procedure linkage
5420 table entry for a local symbol. */
5421 bfd_set_error (bfd_error_bad_value);
5426 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5429 if (h->root.root.string[0] == '.'
5430 && h->root.root.string[1] != '\0')
5431 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5435 /* The following relocations don't need to propagate the
5436 relocation if linking a shared object since they are
5437 section relative. */
5438 case R_PPC64_SECTOFF:
5439 case R_PPC64_SECTOFF_LO:
5440 case R_PPC64_SECTOFF_HI:
5441 case R_PPC64_SECTOFF_HA:
5442 case R_PPC64_SECTOFF_DS:
5443 case R_PPC64_SECTOFF_LO_DS:
5444 case R_PPC64_DTPREL16:
5445 case R_PPC64_DTPREL16_LO:
5446 case R_PPC64_DTPREL16_HI:
5447 case R_PPC64_DTPREL16_HA:
5448 case R_PPC64_DTPREL16_DS:
5449 case R_PPC64_DTPREL16_LO_DS:
5450 case R_PPC64_DTPREL16_HIGH:
5451 case R_PPC64_DTPREL16_HIGHA:
5452 case R_PPC64_DTPREL16_HIGHER:
5453 case R_PPC64_DTPREL16_HIGHERA:
5454 case R_PPC64_DTPREL16_HIGHEST:
5455 case R_PPC64_DTPREL16_HIGHESTA:
5460 case R_PPC64_REL16_LO:
5461 case R_PPC64_REL16_HI:
5462 case R_PPC64_REL16_HA:
5465 /* Not supported as a dynamic relocation. */
5466 case R_PPC64_ADDR64_LOCAL:
5469 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5471 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5472 "in shared libraries and PIEs.\n"),
5473 abfd, sec, rel->r_offset,
5474 ppc64_elf_howto_table[r_type]->name);
5475 bfd_set_error (bfd_error_bad_value);
5481 case R_PPC64_TOC16_DS:
5482 htab->do_multi_toc = 1;
5483 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5484 case R_PPC64_TOC16_LO:
5485 case R_PPC64_TOC16_HI:
5486 case R_PPC64_TOC16_HA:
5487 case R_PPC64_TOC16_LO_DS:
5488 sec->has_toc_reloc = 1;
5491 /* This relocation describes the C++ object vtable hierarchy.
5492 Reconstruct it for later use during GC. */
5493 case R_PPC64_GNU_VTINHERIT:
5494 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5498 /* This relocation describes which C++ vtable entries are actually
5499 used. Record for later use during GC. */
5500 case R_PPC64_GNU_VTENTRY:
5501 BFD_ASSERT (h != NULL);
5503 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5508 case R_PPC64_REL14_BRTAKEN:
5509 case R_PPC64_REL14_BRNTAKEN:
5511 asection *dest = NULL;
5513 /* Heuristic: If jumping outside our section, chances are
5514 we are going to need a stub. */
5517 /* If the sym is weak it may be overridden later, so
5518 don't assume we know where a weak sym lives. */
5519 if (h->root.type == bfd_link_hash_defined)
5520 dest = h->root.u.def.section;
5524 Elf_Internal_Sym *isym;
5526 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5531 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5535 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5540 if (h != NULL && ifunc == NULL)
5542 /* We may need a .plt entry if the function this reloc
5543 refers to is in a shared lib. */
5544 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5547 if (h->root.root.string[0] == '.'
5548 && h->root.root.string[1] != '\0')
5549 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5550 if (h == tga || h == dottga)
5551 sec->has_tls_reloc = 1;
5555 case R_PPC64_TPREL64:
5556 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5558 info->flags |= DF_STATIC_TLS;
5561 case R_PPC64_DTPMOD64:
5562 if (rel + 1 < rel_end
5563 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5564 && rel[1].r_offset == rel->r_offset + 8)
5565 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5567 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5570 case R_PPC64_DTPREL64:
5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5573 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5574 && rel[-1].r_offset == rel->r_offset - 8)
5575 /* This is the second reloc of a dtpmod, dtprel pair.
5576 Don't mark with TLS_DTPREL. */
5580 sec->has_tls_reloc = 1;
5583 struct ppc_link_hash_entry *eh;
5584 eh = (struct ppc_link_hash_entry *) h;
5585 eh->tls_mask |= tls_type;
5588 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5589 rel->r_addend, tls_type))
5592 ppc64_sec = ppc64_elf_section_data (sec);
5593 if (ppc64_sec->sec_type != sec_toc)
5597 /* One extra to simplify get_tls_mask. */
5598 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5599 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5600 if (ppc64_sec->u.toc.symndx == NULL)
5602 amt = sec->size * sizeof (bfd_vma) / 8;
5603 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.add == NULL)
5606 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5607 ppc64_sec->sec_type = sec_toc;
5609 BFD_ASSERT (rel->r_offset % 8 == 0);
5610 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5611 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5613 /* Mark the second slot of a GD or LD entry.
5614 -1 to indicate GD and -2 to indicate LD. */
5615 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5616 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5617 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5618 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5621 case R_PPC64_TPREL16:
5622 case R_PPC64_TPREL16_LO:
5623 case R_PPC64_TPREL16_HI:
5624 case R_PPC64_TPREL16_HA:
5625 case R_PPC64_TPREL16_DS:
5626 case R_PPC64_TPREL16_LO_DS:
5627 case R_PPC64_TPREL16_HIGH:
5628 case R_PPC64_TPREL16_HIGHA:
5629 case R_PPC64_TPREL16_HIGHER:
5630 case R_PPC64_TPREL16_HIGHERA:
5631 case R_PPC64_TPREL16_HIGHEST:
5632 case R_PPC64_TPREL16_HIGHESTA:
5635 info->flags |= DF_STATIC_TLS;
5640 case R_PPC64_ADDR64:
5641 if (opd_sym_map != NULL
5642 && rel + 1 < rel_end
5643 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5647 if (h->root.root.string[0] == '.'
5648 && h->root.root.string[1] != 0
5649 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5652 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5657 Elf_Internal_Sym *isym;
5659 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5664 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5665 if (s != NULL && s != sec)
5666 opd_sym_map[rel->r_offset / 8] = s;
5671 case R_PPC64_ADDR16:
5672 case R_PPC64_ADDR16_DS:
5673 case R_PPC64_ADDR16_HA:
5674 case R_PPC64_ADDR16_HI:
5675 case R_PPC64_ADDR16_HIGH:
5676 case R_PPC64_ADDR16_HIGHA:
5677 case R_PPC64_ADDR16_HIGHER:
5678 case R_PPC64_ADDR16_HIGHERA:
5679 case R_PPC64_ADDR16_HIGHEST:
5680 case R_PPC64_ADDR16_HIGHESTA:
5681 case R_PPC64_ADDR16_LO:
5682 case R_PPC64_ADDR16_LO_DS:
5683 if (h != NULL && !info->shared && abiversion (abfd) != 1
5684 && rel->r_addend == 0)
5686 /* We may need a .plt entry if this reloc refers to a
5687 function in a shared lib. */
5688 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5690 h->pointer_equality_needed = 1;
5697 case R_PPC64_ADDR14:
5698 case R_PPC64_ADDR14_BRNTAKEN:
5699 case R_PPC64_ADDR14_BRTAKEN:
5700 case R_PPC64_ADDR24:
5701 case R_PPC64_ADDR32:
5702 case R_PPC64_UADDR16:
5703 case R_PPC64_UADDR32:
5704 case R_PPC64_UADDR64:
5706 if (h != NULL && !info->shared)
5707 /* We may need a copy reloc. */
5710 /* Don't propagate .opd relocs. */
5711 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5714 /* If we are creating a shared library, and this is a reloc
5715 against a global symbol, or a non PC relative reloc
5716 against a local symbol, then we need to copy the reloc
5717 into the shared library. However, if we are linking with
5718 -Bsymbolic, we do not need to copy a reloc against a
5719 global symbol which is defined in an object we are
5720 including in the link (i.e., DEF_REGULAR is set). At
5721 this point we have not seen all the input files, so it is
5722 possible that DEF_REGULAR is not set now but will be set
5723 later (it is never cleared). In case of a weak definition,
5724 DEF_REGULAR may be cleared later by a strong definition in
5725 a shared library. We account for that possibility below by
5726 storing information in the dyn_relocs field of the hash
5727 table entry. A similar situation occurs when creating
5728 shared libraries and symbol visibility changes render the
5731 If on the other hand, we are creating an executable, we
5732 may need to keep relocations for symbols satisfied by a
5733 dynamic library if we manage to avoid copy relocs for the
5737 && (must_be_dyn_reloc (info, r_type)
5739 && (!SYMBOLIC_BIND (info, h)
5740 || h->root.type == bfd_link_hash_defweak
5741 || !h->def_regular))))
5742 || (ELIMINATE_COPY_RELOCS
5745 && (h->root.type == bfd_link_hash_defweak
5746 || !h->def_regular))
5750 /* We must copy these reloc types into the output file.
5751 Create a reloc section in dynobj and make room for
5755 sreloc = _bfd_elf_make_dynamic_reloc_section
5756 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5762 /* If this is a global symbol, we count the number of
5763 relocations we need for this symbol. */
5766 struct elf_dyn_relocs *p;
5767 struct elf_dyn_relocs **head;
5769 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5771 if (p == NULL || p->sec != sec)
5773 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5783 if (!must_be_dyn_reloc (info, r_type))
5788 /* Track dynamic relocs needed for local syms too.
5789 We really need local syms available to do this
5791 struct ppc_dyn_relocs *p;
5792 struct ppc_dyn_relocs **head;
5793 bfd_boolean is_ifunc;
5796 Elf_Internal_Sym *isym;
5798 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5803 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5807 vpp = &elf_section_data (s)->local_dynrel;
5808 head = (struct ppc_dyn_relocs **) vpp;
5809 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5811 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5813 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5815 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5821 p->ifunc = is_ifunc;
5837 /* Merge backend specific data from an object file to the output
5838 object file when linking. */
5841 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5843 unsigned long iflags, oflags;
5845 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5848 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5851 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5854 iflags = elf_elfheader (ibfd)->e_flags;
5855 oflags = elf_elfheader (obfd)->e_flags;
5857 if (iflags & ~EF_PPC64_ABI)
5859 (*_bfd_error_handler)
5860 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5861 bfd_set_error (bfd_error_bad_value);
5864 else if (iflags != oflags && iflags != 0)
5866 (*_bfd_error_handler)
5867 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5868 ibfd, iflags, oflags);
5869 bfd_set_error (bfd_error_bad_value);
5873 /* Merge Tag_compatibility attributes and any common GNU ones. */
5874 _bfd_elf_merge_object_attributes (ibfd, obfd);
5880 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5882 /* Print normal ELF private data. */
5883 _bfd_elf_print_private_bfd_data (abfd, ptr);
5885 if (elf_elfheader (abfd)->e_flags != 0)
5889 /* xgettext:c-format */
5890 fprintf (file, _("private flags = 0x%lx:"),
5891 elf_elfheader (abfd)->e_flags);
5893 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5894 fprintf (file, _(" [abiv%ld]"),
5895 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5902 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5903 of the code entry point, and its section. */
5906 opd_entry_value (asection *opd_sec,
5908 asection **code_sec,
5910 bfd_boolean in_code_sec)
5912 bfd *opd_bfd = opd_sec->owner;
5913 Elf_Internal_Rela *relocs;
5914 Elf_Internal_Rela *lo, *hi, *look;
5917 /* No relocs implies we are linking a --just-symbols object, or looking
5918 at a final linked executable with addr2line or somesuch. */
5919 if (opd_sec->reloc_count == 0)
5921 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5923 if (contents == NULL)
5925 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5926 return (bfd_vma) -1;
5927 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5930 val = bfd_get_64 (opd_bfd, contents + offset);
5931 if (code_sec != NULL)
5933 asection *sec, *likely = NULL;
5939 && val < sec->vma + sec->size)
5945 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5947 && (sec->flags & SEC_LOAD) != 0
5948 && (sec->flags & SEC_ALLOC) != 0)
5953 if (code_off != NULL)
5954 *code_off = val - likely->vma;
5960 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5962 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5964 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5966 /* Go find the opd reloc at the sym address. */
5968 BFD_ASSERT (lo != NULL);
5969 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5973 look = lo + (hi - lo) / 2;
5974 if (look->r_offset < offset)
5976 else if (look->r_offset > offset)
5980 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5982 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5983 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5985 unsigned long symndx = ELF64_R_SYM (look->r_info);
5988 if (symndx < symtab_hdr->sh_info
5989 || elf_sym_hashes (opd_bfd) == NULL)
5991 Elf_Internal_Sym *sym;
5993 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5996 size_t symcnt = symtab_hdr->sh_info;
5997 if (elf_sym_hashes (opd_bfd) == NULL)
5998 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5999 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
6000 0, NULL, NULL, NULL);
6003 symtab_hdr->contents = (bfd_byte *) sym;
6007 val = sym->st_value;
6008 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6009 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6013 struct elf_link_hash_entry **sym_hashes;
6014 struct elf_link_hash_entry *rh;
6016 sym_hashes = elf_sym_hashes (opd_bfd);
6017 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6020 rh = elf_follow_link (rh);
6021 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6022 || rh->root.type == bfd_link_hash_defweak);
6023 val = rh->root.u.def.value;
6024 sec = rh->root.u.def.section;
6028 /* Handle the odd case where we can be called
6029 during bfd_elf_link_add_symbols before the
6030 symbol hashes have been fully populated. */
6031 Elf_Internal_Sym *sym;
6033 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6034 symndx, NULL, NULL, NULL);
6038 val = sym->st_value;
6039 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6043 val += look->r_addend;
6044 if (code_off != NULL)
6046 if (code_sec != NULL)
6048 if (in_code_sec && *code_sec != sec)
6053 if (sec != NULL && sec->output_section != NULL)
6054 val += sec->output_section->vma + sec->output_offset;
6063 /* If the ELF symbol SYM might be a function in SEC, return the
6064 function size and set *CODE_OFF to the function's entry point,
6065 otherwise return zero. */
6067 static bfd_size_type
6068 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6073 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6074 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6078 if (!(sym->flags & BSF_SYNTHETIC))
6079 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6081 if (strcmp (sym->section->name, ".opd") == 0)
6083 if (opd_entry_value (sym->section, sym->value,
6084 &sec, code_off, TRUE) == (bfd_vma) -1)
6086 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6087 symbol. This size has nothing to do with the code size of the
6088 function, which is what we're supposed to return, but the
6089 code size isn't available without looking up the dot-sym.
6090 However, doing that would be a waste of time particularly
6091 since elf_find_function will look at the dot-sym anyway.
6092 Now, elf_find_function will keep the largest size of any
6093 function sym found at the code address of interest, so return
6094 1 here to avoid it incorrectly caching a larger function size
6095 for a small function. This does mean we return the wrong
6096 size for a new-ABI function of size 24, but all that does is
6097 disable caching for such functions. */
6103 if (sym->section != sec)
6105 *code_off = sym->value;
6112 /* Return true if symbol is defined in a regular object file. */
6115 is_static_defined (struct elf_link_hash_entry *h)
6117 return ((h->root.type == bfd_link_hash_defined
6118 || h->root.type == bfd_link_hash_defweak)
6119 && h->root.u.def.section != NULL
6120 && h->root.u.def.section->output_section != NULL);
6123 /* If FDH is a function descriptor symbol, return the associated code
6124 entry symbol if it is defined. Return NULL otherwise. */
6126 static struct ppc_link_hash_entry *
6127 defined_code_entry (struct ppc_link_hash_entry *fdh)
6129 if (fdh->is_func_descriptor)
6131 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6132 if (fh->elf.root.type == bfd_link_hash_defined
6133 || fh->elf.root.type == bfd_link_hash_defweak)
6139 /* If FH is a function code entry symbol, return the associated
6140 function descriptor symbol if it is defined. Return NULL otherwise. */
6142 static struct ppc_link_hash_entry *
6143 defined_func_desc (struct ppc_link_hash_entry *fh)
6146 && fh->oh->is_func_descriptor)
6148 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6149 if (fdh->elf.root.type == bfd_link_hash_defined
6150 || fdh->elf.root.type == bfd_link_hash_defweak)
6156 /* Mark all our entry sym sections, both opd and code section. */
6159 ppc64_elf_gc_keep (struct bfd_link_info *info)
6161 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6162 struct bfd_sym_chain *sym;
6167 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6169 struct ppc_link_hash_entry *eh, *fh;
6172 eh = (struct ppc_link_hash_entry *)
6173 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6176 if (eh->elf.root.type != bfd_link_hash_defined
6177 && eh->elf.root.type != bfd_link_hash_defweak)
6180 fh = defined_code_entry (eh);
6183 sec = fh->elf.root.u.def.section;
6184 sec->flags |= SEC_KEEP;
6186 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6187 && opd_entry_value (eh->elf.root.u.def.section,
6188 eh->elf.root.u.def.value,
6189 &sec, NULL, FALSE) != (bfd_vma) -1)
6190 sec->flags |= SEC_KEEP;
6192 sec = eh->elf.root.u.def.section;
6193 sec->flags |= SEC_KEEP;
6197 /* Mark sections containing dynamically referenced symbols. When
6198 building shared libraries, we must assume that any visible symbol is
6202 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6204 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6205 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6206 struct ppc_link_hash_entry *fdh;
6207 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6209 /* Dynamic linking info is on the func descriptor sym. */
6210 fdh = defined_func_desc (eh);
6214 if ((eh->elf.root.type == bfd_link_hash_defined
6215 || eh->elf.root.type == bfd_link_hash_defweak)
6216 && (eh->elf.ref_dynamic
6217 || (eh->elf.def_regular
6218 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6219 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6220 && (!info->executable
6221 || info->export_dynamic
6224 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6225 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6226 || !bfd_hide_sym_by_version (info->version_info,
6227 eh->elf.root.root.string)))))
6230 struct ppc_link_hash_entry *fh;
6232 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6234 /* Function descriptor syms cause the associated
6235 function code sym section to be marked. */
6236 fh = defined_code_entry (eh);
6239 code_sec = fh->elf.root.u.def.section;
6240 code_sec->flags |= SEC_KEEP;
6242 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6243 && opd_entry_value (eh->elf.root.u.def.section,
6244 eh->elf.root.u.def.value,
6245 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6246 code_sec->flags |= SEC_KEEP;
6252 /* Return the section that should be marked against GC for a given
6256 ppc64_elf_gc_mark_hook (asection *sec,
6257 struct bfd_link_info *info,
6258 Elf_Internal_Rela *rel,
6259 struct elf_link_hash_entry *h,
6260 Elf_Internal_Sym *sym)
6264 /* Syms return NULL if we're marking .opd, so we avoid marking all
6265 function sections, as all functions are referenced in .opd. */
6267 if (get_opd_info (sec) != NULL)
6272 enum elf_ppc64_reloc_type r_type;
6273 struct ppc_link_hash_entry *eh, *fh, *fdh;
6275 r_type = ELF64_R_TYPE (rel->r_info);
6278 case R_PPC64_GNU_VTINHERIT:
6279 case R_PPC64_GNU_VTENTRY:
6283 switch (h->root.type)
6285 case bfd_link_hash_defined:
6286 case bfd_link_hash_defweak:
6287 eh = (struct ppc_link_hash_entry *) h;
6288 fdh = defined_func_desc (eh);
6292 /* Function descriptor syms cause the associated
6293 function code sym section to be marked. */
6294 fh = defined_code_entry (eh);
6297 /* They also mark their opd section. */
6298 eh->elf.root.u.def.section->gc_mark = 1;
6300 rsec = fh->elf.root.u.def.section;
6302 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6303 && opd_entry_value (eh->elf.root.u.def.section,
6304 eh->elf.root.u.def.value,
6305 &rsec, NULL, FALSE) != (bfd_vma) -1)
6306 eh->elf.root.u.def.section->gc_mark = 1;
6308 rsec = h->root.u.def.section;
6311 case bfd_link_hash_common:
6312 rsec = h->root.u.c.p->section;
6316 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6322 struct _opd_sec_data *opd;
6324 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6325 opd = get_opd_info (rsec);
6326 if (opd != NULL && opd->func_sec != NULL)
6330 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6337 /* Update the .got, .plt. and dynamic reloc reference counts for the
6338 section being removed. */
6341 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6342 asection *sec, const Elf_Internal_Rela *relocs)
6344 struct ppc_link_hash_table *htab;
6345 Elf_Internal_Shdr *symtab_hdr;
6346 struct elf_link_hash_entry **sym_hashes;
6347 struct got_entry **local_got_ents;
6348 const Elf_Internal_Rela *rel, *relend;
6350 if (info->relocatable)
6353 if ((sec->flags & SEC_ALLOC) == 0)
6356 elf_section_data (sec)->local_dynrel = NULL;
6358 htab = ppc_hash_table (info);
6362 symtab_hdr = &elf_symtab_hdr (abfd);
6363 sym_hashes = elf_sym_hashes (abfd);
6364 local_got_ents = elf_local_got_ents (abfd);
6366 relend = relocs + sec->reloc_count;
6367 for (rel = relocs; rel < relend; rel++)
6369 unsigned long r_symndx;
6370 enum elf_ppc64_reloc_type r_type;
6371 struct elf_link_hash_entry *h = NULL;
6372 unsigned char tls_type = 0;
6374 r_symndx = ELF64_R_SYM (rel->r_info);
6375 r_type = ELF64_R_TYPE (rel->r_info);
6376 if (r_symndx >= symtab_hdr->sh_info)
6378 struct ppc_link_hash_entry *eh;
6379 struct elf_dyn_relocs **pp;
6380 struct elf_dyn_relocs *p;
6382 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6383 h = elf_follow_link (h);
6384 eh = (struct ppc_link_hash_entry *) h;
6386 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6389 /* Everything must go for SEC. */
6395 if (is_branch_reloc (r_type))
6397 struct plt_entry **ifunc = NULL;
6400 if (h->type == STT_GNU_IFUNC)
6401 ifunc = &h->plt.plist;
6403 else if (local_got_ents != NULL)
6405 struct plt_entry **local_plt = (struct plt_entry **)
6406 (local_got_ents + symtab_hdr->sh_info);
6407 unsigned char *local_got_tls_masks = (unsigned char *)
6408 (local_plt + symtab_hdr->sh_info);
6409 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6410 ifunc = local_plt + r_symndx;
6414 struct plt_entry *ent;
6416 for (ent = *ifunc; ent != NULL; ent = ent->next)
6417 if (ent->addend == rel->r_addend)
6421 if (ent->plt.refcount > 0)
6422 ent->plt.refcount -= 1;
6429 case R_PPC64_GOT_TLSLD16:
6430 case R_PPC64_GOT_TLSLD16_LO:
6431 case R_PPC64_GOT_TLSLD16_HI:
6432 case R_PPC64_GOT_TLSLD16_HA:
6433 tls_type = TLS_TLS | TLS_LD;
6436 case R_PPC64_GOT_TLSGD16:
6437 case R_PPC64_GOT_TLSGD16_LO:
6438 case R_PPC64_GOT_TLSGD16_HI:
6439 case R_PPC64_GOT_TLSGD16_HA:
6440 tls_type = TLS_TLS | TLS_GD;
6443 case R_PPC64_GOT_TPREL16_DS:
6444 case R_PPC64_GOT_TPREL16_LO_DS:
6445 case R_PPC64_GOT_TPREL16_HI:
6446 case R_PPC64_GOT_TPREL16_HA:
6447 tls_type = TLS_TLS | TLS_TPREL;
6450 case R_PPC64_GOT_DTPREL16_DS:
6451 case R_PPC64_GOT_DTPREL16_LO_DS:
6452 case R_PPC64_GOT_DTPREL16_HI:
6453 case R_PPC64_GOT_DTPREL16_HA:
6454 tls_type = TLS_TLS | TLS_DTPREL;
6458 case R_PPC64_GOT16_DS:
6459 case R_PPC64_GOT16_HA:
6460 case R_PPC64_GOT16_HI:
6461 case R_PPC64_GOT16_LO:
6462 case R_PPC64_GOT16_LO_DS:
6465 struct got_entry *ent;
6470 ent = local_got_ents[r_symndx];
6472 for (; ent != NULL; ent = ent->next)
6473 if (ent->addend == rel->r_addend
6474 && ent->owner == abfd
6475 && ent->tls_type == tls_type)
6479 if (ent->got.refcount > 0)
6480 ent->got.refcount -= 1;
6484 case R_PPC64_PLT16_HA:
6485 case R_PPC64_PLT16_HI:
6486 case R_PPC64_PLT16_LO:
6490 case R_PPC64_REL14_BRNTAKEN:
6491 case R_PPC64_REL14_BRTAKEN:
6495 struct plt_entry *ent;
6497 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6498 if (ent->addend == rel->r_addend)
6500 if (ent != NULL && ent->plt.refcount > 0)
6501 ent->plt.refcount -= 1;
6512 /* The maximum size of .sfpr. */
6513 #define SFPR_MAX (218*4)
6515 struct sfpr_def_parms
6517 const char name[12];
6518 unsigned char lo, hi;
6519 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6520 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6523 /* Auto-generate _save*, _rest* functions in .sfpr. */
6526 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6528 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6530 size_t len = strlen (parm->name);
6531 bfd_boolean writing = FALSE;
6537 memcpy (sym, parm->name, len);
6540 for (i = parm->lo; i <= parm->hi; i++)
6542 struct elf_link_hash_entry *h;
6544 sym[len + 0] = i / 10 + '0';
6545 sym[len + 1] = i % 10 + '0';
6546 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6550 h->root.type = bfd_link_hash_defined;
6551 h->root.u.def.section = htab->sfpr;
6552 h->root.u.def.value = htab->sfpr->size;
6555 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6557 if (htab->sfpr->contents == NULL)
6559 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6560 if (htab->sfpr->contents == NULL)
6566 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6568 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6570 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6571 htab->sfpr->size = p - htab->sfpr->contents;
6579 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6581 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6586 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6588 p = savegpr0 (abfd, p, r);
6589 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6591 bfd_put_32 (abfd, BLR, p);
6596 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6598 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6603 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6605 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6607 p = restgpr0 (abfd, p, r);
6608 bfd_put_32 (abfd, MTLR_R0, p);
6612 p = restgpr0 (abfd, p, 30);
6613 p = restgpr0 (abfd, p, 31);
6615 bfd_put_32 (abfd, BLR, p);
6620 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6622 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6627 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6629 p = savegpr1 (abfd, p, r);
6630 bfd_put_32 (abfd, BLR, p);
6635 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6637 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6642 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6644 p = restgpr1 (abfd, p, r);
6645 bfd_put_32 (abfd, BLR, p);
6650 savefpr (bfd *abfd, bfd_byte *p, int r)
6652 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6657 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6659 p = savefpr (abfd, p, r);
6660 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6662 bfd_put_32 (abfd, BLR, p);
6667 restfpr (bfd *abfd, bfd_byte *p, int r)
6669 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6674 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6676 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6678 p = restfpr (abfd, p, r);
6679 bfd_put_32 (abfd, MTLR_R0, p);
6683 p = restfpr (abfd, p, 30);
6684 p = restfpr (abfd, p, 31);
6686 bfd_put_32 (abfd, BLR, p);
6691 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6693 p = savefpr (abfd, p, r);
6694 bfd_put_32 (abfd, BLR, p);
6699 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6701 p = restfpr (abfd, p, r);
6702 bfd_put_32 (abfd, BLR, p);
6707 savevr (bfd *abfd, bfd_byte *p, int r)
6709 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6711 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6716 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6718 p = savevr (abfd, p, r);
6719 bfd_put_32 (abfd, BLR, p);
6724 restvr (bfd *abfd, bfd_byte *p, int r)
6726 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6728 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6733 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6735 p = restvr (abfd, p, r);
6736 bfd_put_32 (abfd, BLR, p);
6740 /* Called via elf_link_hash_traverse to transfer dynamic linking
6741 information on function code symbol entries to their corresponding
6742 function descriptor symbol entries. */
6745 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6747 struct bfd_link_info *info;
6748 struct ppc_link_hash_table *htab;
6749 struct plt_entry *ent;
6750 struct ppc_link_hash_entry *fh;
6751 struct ppc_link_hash_entry *fdh;
6752 bfd_boolean force_local;
6754 fh = (struct ppc_link_hash_entry *) h;
6755 if (fh->elf.root.type == bfd_link_hash_indirect)
6759 htab = ppc_hash_table (info);
6763 /* Resolve undefined references to dot-symbols as the value
6764 in the function descriptor, if we have one in a regular object.
6765 This is to satisfy cases like ".quad .foo". Calls to functions
6766 in dynamic objects are handled elsewhere. */
6767 if (fh->elf.root.type == bfd_link_hash_undefweak
6768 && fh->was_undefined
6769 && (fdh = defined_func_desc (fh)) != NULL
6770 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6771 && opd_entry_value (fdh->elf.root.u.def.section,
6772 fdh->elf.root.u.def.value,
6773 &fh->elf.root.u.def.section,
6774 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6776 fh->elf.root.type = fdh->elf.root.type;
6777 fh->elf.forced_local = 1;
6778 fh->elf.def_regular = fdh->elf.def_regular;
6779 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6782 /* If this is a function code symbol, transfer dynamic linking
6783 information to the function descriptor symbol. */
6787 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6788 if (ent->plt.refcount > 0)
6791 || fh->elf.root.root.string[0] != '.'
6792 || fh->elf.root.root.string[1] == '\0')
6795 /* Find the corresponding function descriptor symbol. Create it
6796 as undefined if necessary. */
6798 fdh = lookup_fdh (fh, htab);
6800 && !info->executable
6801 && (fh->elf.root.type == bfd_link_hash_undefined
6802 || fh->elf.root.type == bfd_link_hash_undefweak))
6804 fdh = make_fdh (info, fh);
6809 /* Fake function descriptors are made undefweak. If the function
6810 code symbol is strong undefined, make the fake sym the same.
6811 If the function code symbol is defined, then force the fake
6812 descriptor local; We can't support overriding of symbols in a
6813 shared library on a fake descriptor. */
6817 && fdh->elf.root.type == bfd_link_hash_undefweak)
6819 if (fh->elf.root.type == bfd_link_hash_undefined)
6821 fdh->elf.root.type = bfd_link_hash_undefined;
6822 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6824 else if (fh->elf.root.type == bfd_link_hash_defined
6825 || fh->elf.root.type == bfd_link_hash_defweak)
6827 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6832 && !fdh->elf.forced_local
6833 && (!info->executable
6834 || fdh->elf.def_dynamic
6835 || fdh->elf.ref_dynamic
6836 || (fdh->elf.root.type == bfd_link_hash_undefweak
6837 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6839 if (fdh->elf.dynindx == -1)
6840 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6842 fdh->elf.ref_regular |= fh->elf.ref_regular;
6843 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6844 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6845 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6846 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6848 move_plt_plist (fh, fdh);
6849 fdh->elf.needs_plt = 1;
6851 fdh->is_func_descriptor = 1;
6856 /* Now that the info is on the function descriptor, clear the
6857 function code sym info. Any function code syms for which we
6858 don't have a definition in a regular file, we force local.
6859 This prevents a shared library from exporting syms that have
6860 been imported from another library. Function code syms that
6861 are really in the library we must leave global to prevent the
6862 linker dragging in a definition from a static library. */
6863 force_local = (!fh->elf.def_regular
6865 || !fdh->elf.def_regular
6866 || fdh->elf.forced_local);
6867 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6872 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6873 this hook to a) provide some gcc support functions, and b) transfer
6874 dynamic linking information gathered so far on function code symbol
6875 entries, to their corresponding function descriptor symbol entries. */
6878 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6879 struct bfd_link_info *info)
6881 struct ppc_link_hash_table *htab;
6883 static const struct sfpr_def_parms funcs[] =
6885 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6886 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6887 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6888 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6889 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6890 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6891 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6892 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6893 { "._savef", 14, 31, savefpr, savefpr1_tail },
6894 { "._restf", 14, 31, restfpr, restfpr1_tail },
6895 { "_savevr_", 20, 31, savevr, savevr_tail },
6896 { "_restvr_", 20, 31, restvr, restvr_tail }
6899 htab = ppc_hash_table (info);
6903 if (!info->relocatable
6904 && htab->elf.hgot != NULL)
6906 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6907 /* Make .TOC. defined so as to prevent it being made dynamic.
6908 The wrong value here is fixed later in ppc64_elf_set_toc. */
6909 htab->elf.hgot->type = STT_OBJECT;
6910 htab->elf.hgot->root.type = bfd_link_hash_defined;
6911 htab->elf.hgot->root.u.def.value = 0;
6912 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6913 htab->elf.hgot->def_regular = 1;
6914 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6918 if (htab->sfpr == NULL)
6919 /* We don't have any relocs. */
6922 /* Provide any missing _save* and _rest* functions. */
6923 htab->sfpr->size = 0;
6924 if (htab->params->save_restore_funcs)
6925 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6926 if (!sfpr_define (info, &funcs[i]))
6929 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6931 if (htab->sfpr->size == 0)
6932 htab->sfpr->flags |= SEC_EXCLUDE;
6937 /* Return true if we have dynamic relocs that apply to read-only sections. */
6940 readonly_dynrelocs (struct elf_link_hash_entry *h)
6942 struct ppc_link_hash_entry *eh;
6943 struct elf_dyn_relocs *p;
6945 eh = (struct ppc_link_hash_entry *) h;
6946 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6948 asection *s = p->sec->output_section;
6950 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6956 /* Adjust a symbol defined by a dynamic object and referenced by a
6957 regular object. The current definition is in some section of the
6958 dynamic object, but we're not including those sections. We have to
6959 change the definition to something the rest of the link can
6963 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6964 struct elf_link_hash_entry *h)
6966 struct ppc_link_hash_table *htab;
6969 htab = ppc_hash_table (info);
6973 /* Deal with function syms. */
6974 if (h->type == STT_FUNC
6975 || h->type == STT_GNU_IFUNC
6978 /* Clear procedure linkage table information for any symbol that
6979 won't need a .plt entry. */
6980 struct plt_entry *ent;
6981 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6982 if (ent->plt.refcount > 0)
6985 || (h->type != STT_GNU_IFUNC
6986 && (SYMBOL_CALLS_LOCAL (info, h)
6987 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6988 && h->root.type == bfd_link_hash_undefweak))))
6990 h->plt.plist = NULL;
6992 h->pointer_equality_needed = 0;
6994 else if (abiversion (info->output_bfd) == 2)
6996 /* Taking a function's address in a read/write section
6997 doesn't require us to define the function symbol in the
6998 executable on a global entry stub. A dynamic reloc can
7000 if (h->pointer_equality_needed
7001 && h->type != STT_GNU_IFUNC
7002 && !readonly_dynrelocs (h))
7004 h->pointer_equality_needed = 0;
7008 /* After adjust_dynamic_symbol, non_got_ref set in the
7009 non-shared case means that we have allocated space in
7010 .dynbss for the symbol and thus dyn_relocs for this
7011 symbol should be discarded.
7012 If we get here we know we are making a PLT entry for this
7013 symbol, and in an executable we'd normally resolve
7014 relocations against this symbol to the PLT entry. Allow
7015 dynamic relocs if the reference is weak, and the dynamic
7016 relocs will not cause text relocation. */
7017 else if (!h->ref_regular_nonweak
7019 && h->type != STT_GNU_IFUNC
7020 && !readonly_dynrelocs (h))
7023 /* If making a plt entry, then we don't need copy relocs. */
7028 h->plt.plist = NULL;
7030 /* If this is a weak symbol, and there is a real definition, the
7031 processor independent code will have arranged for us to see the
7032 real definition first, and we can just use the same value. */
7033 if (h->u.weakdef != NULL)
7035 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7036 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7037 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7038 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7039 if (ELIMINATE_COPY_RELOCS)
7040 h->non_got_ref = h->u.weakdef->non_got_ref;
7044 /* If we are creating a shared library, we must presume that the
7045 only references to the symbol are via the global offset table.
7046 For such cases we need not do anything here; the relocations will
7047 be handled correctly by relocate_section. */
7051 /* If there are no references to this symbol that do not use the
7052 GOT, we don't need to generate a copy reloc. */
7053 if (!h->non_got_ref)
7056 /* Don't generate a copy reloc for symbols defined in the executable. */
7057 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7060 /* If we didn't find any dynamic relocs in read-only sections, then
7061 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7062 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7068 if (h->plt.plist != NULL)
7070 /* We should never get here, but unfortunately there are versions
7071 of gcc out there that improperly (for this ABI) put initialized
7072 function pointers, vtable refs and suchlike in read-only
7073 sections. Allow them to proceed, but warn that this might
7074 break at runtime. */
7075 info->callbacks->einfo
7076 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7077 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7078 h->root.root.string);
7081 /* This is a reference to a symbol defined by a dynamic object which
7082 is not a function. */
7084 /* We must allocate the symbol in our .dynbss section, which will
7085 become part of the .bss section of the executable. There will be
7086 an entry for this symbol in the .dynsym section. The dynamic
7087 object will contain position independent code, so all references
7088 from the dynamic object to this symbol will go through the global
7089 offset table. The dynamic linker will use the .dynsym entry to
7090 determine the address it must put in the global offset table, so
7091 both the dynamic object and the regular object will refer to the
7092 same memory location for the variable. */
7094 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7095 to copy the initial value out of the dynamic object and into the
7096 runtime process image. We need to remember the offset into the
7097 .rela.bss section we are going to use. */
7098 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7100 htab->relbss->size += sizeof (Elf64_External_Rela);
7106 return _bfd_elf_adjust_dynamic_copy (h, s);
7109 /* If given a function descriptor symbol, hide both the function code
7110 sym and the descriptor. */
7112 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7113 struct elf_link_hash_entry *h,
7114 bfd_boolean force_local)
7116 struct ppc_link_hash_entry *eh;
7117 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7119 eh = (struct ppc_link_hash_entry *) h;
7120 if (eh->is_func_descriptor)
7122 struct ppc_link_hash_entry *fh = eh->oh;
7127 struct ppc_link_hash_table *htab;
7130 /* We aren't supposed to use alloca in BFD because on
7131 systems which do not have alloca the version in libiberty
7132 calls xmalloc, which might cause the program to crash
7133 when it runs out of memory. This function doesn't have a
7134 return status, so there's no way to gracefully return an
7135 error. So cheat. We know that string[-1] can be safely
7136 accessed; It's either a string in an ELF string table,
7137 or allocated in an objalloc structure. */
7139 p = eh->elf.root.root.string - 1;
7142 htab = ppc_hash_table (info);
7146 fh = (struct ppc_link_hash_entry *)
7147 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7150 /* Unfortunately, if it so happens that the string we were
7151 looking for was allocated immediately before this string,
7152 then we overwrote the string terminator. That's the only
7153 reason the lookup should fail. */
7156 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7157 while (q >= eh->elf.root.root.string && *q == *p)
7159 if (q < eh->elf.root.root.string && *p == '.')
7160 fh = (struct ppc_link_hash_entry *)
7161 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7170 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7175 get_sym_h (struct elf_link_hash_entry **hp,
7176 Elf_Internal_Sym **symp,
7178 unsigned char **tls_maskp,
7179 Elf_Internal_Sym **locsymsp,
7180 unsigned long r_symndx,
7183 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7185 if (r_symndx >= symtab_hdr->sh_info)
7187 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7188 struct elf_link_hash_entry *h;
7190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7191 h = elf_follow_link (h);
7199 if (symsecp != NULL)
7201 asection *symsec = NULL;
7202 if (h->root.type == bfd_link_hash_defined
7203 || h->root.type == bfd_link_hash_defweak)
7204 symsec = h->root.u.def.section;
7208 if (tls_maskp != NULL)
7210 struct ppc_link_hash_entry *eh;
7212 eh = (struct ppc_link_hash_entry *) h;
7213 *tls_maskp = &eh->tls_mask;
7218 Elf_Internal_Sym *sym;
7219 Elf_Internal_Sym *locsyms = *locsymsp;
7221 if (locsyms == NULL)
7223 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7224 if (locsyms == NULL)
7225 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7226 symtab_hdr->sh_info,
7227 0, NULL, NULL, NULL);
7228 if (locsyms == NULL)
7230 *locsymsp = locsyms;
7232 sym = locsyms + r_symndx;
7240 if (symsecp != NULL)
7241 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7243 if (tls_maskp != NULL)
7245 struct got_entry **lgot_ents;
7246 unsigned char *tls_mask;
7249 lgot_ents = elf_local_got_ents (ibfd);
7250 if (lgot_ents != NULL)
7252 struct plt_entry **local_plt = (struct plt_entry **)
7253 (lgot_ents + symtab_hdr->sh_info);
7254 unsigned char *lgot_masks = (unsigned char *)
7255 (local_plt + symtab_hdr->sh_info);
7256 tls_mask = &lgot_masks[r_symndx];
7258 *tls_maskp = tls_mask;
7264 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7265 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7266 type suitable for optimization, and 1 otherwise. */
7269 get_tls_mask (unsigned char **tls_maskp,
7270 unsigned long *toc_symndx,
7271 bfd_vma *toc_addend,
7272 Elf_Internal_Sym **locsymsp,
7273 const Elf_Internal_Rela *rel,
7276 unsigned long r_symndx;
7278 struct elf_link_hash_entry *h;
7279 Elf_Internal_Sym *sym;
7283 r_symndx = ELF64_R_SYM (rel->r_info);
7284 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7287 if ((*tls_maskp != NULL && **tls_maskp != 0)
7289 || ppc64_elf_section_data (sec) == NULL
7290 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7293 /* Look inside a TOC section too. */
7296 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7297 off = h->root.u.def.value;
7300 off = sym->st_value;
7301 off += rel->r_addend;
7302 BFD_ASSERT (off % 8 == 0);
7303 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7304 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7305 if (toc_symndx != NULL)
7306 *toc_symndx = r_symndx;
7307 if (toc_addend != NULL)
7308 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7309 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7311 if ((h == NULL || is_static_defined (h))
7312 && (next_r == -1 || next_r == -2))
7317 /* Find (or create) an entry in the tocsave hash table. */
7319 static struct tocsave_entry *
7320 tocsave_find (struct ppc_link_hash_table *htab,
7321 enum insert_option insert,
7322 Elf_Internal_Sym **local_syms,
7323 const Elf_Internal_Rela *irela,
7326 unsigned long r_indx;
7327 struct elf_link_hash_entry *h;
7328 Elf_Internal_Sym *sym;
7329 struct tocsave_entry ent, *p;
7331 struct tocsave_entry **slot;
7333 r_indx = ELF64_R_SYM (irela->r_info);
7334 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7336 if (ent.sec == NULL || ent.sec->output_section == NULL)
7338 (*_bfd_error_handler)
7339 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7344 ent.offset = h->root.u.def.value;
7346 ent.offset = sym->st_value;
7347 ent.offset += irela->r_addend;
7349 hash = tocsave_htab_hash (&ent);
7350 slot = ((struct tocsave_entry **)
7351 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7357 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7366 /* Adjust all global syms defined in opd sections. In gcc generated
7367 code for the old ABI, these will already have been done. */
7370 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7372 struct ppc_link_hash_entry *eh;
7374 struct _opd_sec_data *opd;
7376 if (h->root.type == bfd_link_hash_indirect)
7379 if (h->root.type != bfd_link_hash_defined
7380 && h->root.type != bfd_link_hash_defweak)
7383 eh = (struct ppc_link_hash_entry *) h;
7384 if (eh->adjust_done)
7387 sym_sec = eh->elf.root.u.def.section;
7388 opd = get_opd_info (sym_sec);
7389 if (opd != NULL && opd->adjust != NULL)
7391 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7394 /* This entry has been deleted. */
7395 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7398 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7399 if (discarded_section (dsec))
7401 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7405 eh->elf.root.u.def.value = 0;
7406 eh->elf.root.u.def.section = dsec;
7409 eh->elf.root.u.def.value += adjust;
7410 eh->adjust_done = 1;
7415 /* Handles decrementing dynamic reloc counts for the reloc specified by
7416 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7417 have already been determined. */
7420 dec_dynrel_count (bfd_vma r_info,
7422 struct bfd_link_info *info,
7423 Elf_Internal_Sym **local_syms,
7424 struct elf_link_hash_entry *h,
7425 Elf_Internal_Sym *sym)
7427 enum elf_ppc64_reloc_type r_type;
7428 asection *sym_sec = NULL;
7430 /* Can this reloc be dynamic? This switch, and later tests here
7431 should be kept in sync with the code in check_relocs. */
7432 r_type = ELF64_R_TYPE (r_info);
7438 case R_PPC64_TPREL16:
7439 case R_PPC64_TPREL16_LO:
7440 case R_PPC64_TPREL16_HI:
7441 case R_PPC64_TPREL16_HA:
7442 case R_PPC64_TPREL16_DS:
7443 case R_PPC64_TPREL16_LO_DS:
7444 case R_PPC64_TPREL16_HIGH:
7445 case R_PPC64_TPREL16_HIGHA:
7446 case R_PPC64_TPREL16_HIGHER:
7447 case R_PPC64_TPREL16_HIGHERA:
7448 case R_PPC64_TPREL16_HIGHEST:
7449 case R_PPC64_TPREL16_HIGHESTA:
7453 case R_PPC64_TPREL64:
7454 case R_PPC64_DTPMOD64:
7455 case R_PPC64_DTPREL64:
7456 case R_PPC64_ADDR64:
7460 case R_PPC64_ADDR14:
7461 case R_PPC64_ADDR14_BRNTAKEN:
7462 case R_PPC64_ADDR14_BRTAKEN:
7463 case R_PPC64_ADDR16:
7464 case R_PPC64_ADDR16_DS:
7465 case R_PPC64_ADDR16_HA:
7466 case R_PPC64_ADDR16_HI:
7467 case R_PPC64_ADDR16_HIGH:
7468 case R_PPC64_ADDR16_HIGHA:
7469 case R_PPC64_ADDR16_HIGHER:
7470 case R_PPC64_ADDR16_HIGHERA:
7471 case R_PPC64_ADDR16_HIGHEST:
7472 case R_PPC64_ADDR16_HIGHESTA:
7473 case R_PPC64_ADDR16_LO:
7474 case R_PPC64_ADDR16_LO_DS:
7475 case R_PPC64_ADDR24:
7476 case R_PPC64_ADDR32:
7477 case R_PPC64_UADDR16:
7478 case R_PPC64_UADDR32:
7479 case R_PPC64_UADDR64:
7484 if (local_syms != NULL)
7486 unsigned long r_symndx;
7487 bfd *ibfd = sec->owner;
7489 r_symndx = ELF64_R_SYM (r_info);
7490 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7495 && (must_be_dyn_reloc (info, r_type)
7497 && (!SYMBOLIC_BIND (info, h)
7498 || h->root.type == bfd_link_hash_defweak
7499 || !h->def_regular))))
7500 || (ELIMINATE_COPY_RELOCS
7503 && (h->root.type == bfd_link_hash_defweak
7504 || !h->def_regular)))
7511 struct elf_dyn_relocs *p;
7512 struct elf_dyn_relocs **pp;
7513 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7515 /* elf_gc_sweep may have already removed all dyn relocs associated
7516 with local syms for a given section. Also, symbol flags are
7517 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7518 report a dynreloc miscount. */
7519 if (*pp == NULL && info->gc_sections)
7522 while ((p = *pp) != NULL)
7526 if (!must_be_dyn_reloc (info, r_type))
7538 struct ppc_dyn_relocs *p;
7539 struct ppc_dyn_relocs **pp;
7541 bfd_boolean is_ifunc;
7543 if (local_syms == NULL)
7544 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7545 if (sym_sec == NULL)
7548 vpp = &elf_section_data (sym_sec)->local_dynrel;
7549 pp = (struct ppc_dyn_relocs **) vpp;
7551 if (*pp == NULL && info->gc_sections)
7554 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7555 while ((p = *pp) != NULL)
7557 if (p->sec == sec && p->ifunc == is_ifunc)
7568 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7570 bfd_set_error (bfd_error_bad_value);
7574 /* Remove unused Official Procedure Descriptor entries. Currently we
7575 only remove those associated with functions in discarded link-once
7576 sections, or weakly defined functions that have been overridden. It
7577 would be possible to remove many more entries for statically linked
7581 ppc64_elf_edit_opd (struct bfd_link_info *info)
7584 bfd_boolean some_edited = FALSE;
7585 asection *need_pad = NULL;
7586 struct ppc_link_hash_table *htab;
7588 htab = ppc_hash_table (info);
7592 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7595 Elf_Internal_Rela *relstart, *rel, *relend;
7596 Elf_Internal_Shdr *symtab_hdr;
7597 Elf_Internal_Sym *local_syms;
7599 struct _opd_sec_data *opd;
7600 bfd_boolean need_edit, add_aux_fields;
7601 bfd_size_type cnt_16b = 0;
7603 if (!is_ppc64_elf (ibfd))
7606 sec = bfd_get_section_by_name (ibfd, ".opd");
7607 if (sec == NULL || sec->size == 0)
7610 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7613 if (sec->output_section == bfd_abs_section_ptr)
7616 /* Look through the section relocs. */
7617 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7621 symtab_hdr = &elf_symtab_hdr (ibfd);
7623 /* Read the relocations. */
7624 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7626 if (relstart == NULL)
7629 /* First run through the relocs to check they are sane, and to
7630 determine whether we need to edit this opd section. */
7634 relend = relstart + sec->reloc_count;
7635 for (rel = relstart; rel < relend; )
7637 enum elf_ppc64_reloc_type r_type;
7638 unsigned long r_symndx;
7640 struct elf_link_hash_entry *h;
7641 Elf_Internal_Sym *sym;
7643 /* .opd contains a regular array of 16 or 24 byte entries. We're
7644 only interested in the reloc pointing to a function entry
7646 if (rel->r_offset != offset
7647 || rel + 1 >= relend
7648 || (rel + 1)->r_offset != offset + 8)
7650 /* If someone messes with .opd alignment then after a
7651 "ld -r" we might have padding in the middle of .opd.
7652 Also, there's nothing to prevent someone putting
7653 something silly in .opd with the assembler. No .opd
7654 optimization for them! */
7656 (*_bfd_error_handler)
7657 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7662 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7663 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7665 (*_bfd_error_handler)
7666 (_("%B: unexpected reloc type %u in .opd section"),
7672 r_symndx = ELF64_R_SYM (rel->r_info);
7673 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7677 if (sym_sec == NULL || sym_sec->owner == NULL)
7679 const char *sym_name;
7681 sym_name = h->root.root.string;
7683 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7686 (*_bfd_error_handler)
7687 (_("%B: undefined sym `%s' in .opd section"),
7693 /* opd entries are always for functions defined in the
7694 current input bfd. If the symbol isn't defined in the
7695 input bfd, then we won't be using the function in this
7696 bfd; It must be defined in a linkonce section in another
7697 bfd, or is weak. It's also possible that we are
7698 discarding the function due to a linker script /DISCARD/,
7699 which we test for via the output_section. */
7700 if (sym_sec->owner != ibfd
7701 || sym_sec->output_section == bfd_abs_section_ptr)
7706 || (rel + 1 == relend && rel->r_offset == offset + 16))
7708 if (sec->size == offset + 24)
7713 if (rel == relend && sec->size == offset + 16)
7721 if (rel->r_offset == offset + 24)
7723 else if (rel->r_offset != offset + 16)
7725 else if (rel + 1 < relend
7726 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7727 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7732 else if (rel + 2 < relend
7733 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7734 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7743 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7745 if (need_edit || add_aux_fields)
7747 Elf_Internal_Rela *write_rel;
7748 Elf_Internal_Shdr *rel_hdr;
7749 bfd_byte *rptr, *wptr;
7750 bfd_byte *new_contents;
7755 new_contents = NULL;
7756 amt = sec->size * sizeof (long) / 8;
7757 opd = &ppc64_elf_section_data (sec)->u.opd;
7758 opd->adjust = bfd_zalloc (sec->owner, amt);
7759 if (opd->adjust == NULL)
7761 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7763 /* This seems a waste of time as input .opd sections are all
7764 zeros as generated by gcc, but I suppose there's no reason
7765 this will always be so. We might start putting something in
7766 the third word of .opd entries. */
7767 if ((sec->flags & SEC_IN_MEMORY) == 0)
7770 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7775 if (local_syms != NULL
7776 && symtab_hdr->contents != (unsigned char *) local_syms)
7778 if (elf_section_data (sec)->relocs != relstart)
7782 sec->contents = loc;
7783 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7786 elf_section_data (sec)->relocs = relstart;
7788 new_contents = sec->contents;
7791 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7792 if (new_contents == NULL)
7796 wptr = new_contents;
7797 rptr = sec->contents;
7799 write_rel = relstart;
7803 for (rel = relstart; rel < relend; rel++)
7805 unsigned long r_symndx;
7807 struct elf_link_hash_entry *h;
7808 Elf_Internal_Sym *sym;
7810 r_symndx = ELF64_R_SYM (rel->r_info);
7811 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7815 if (rel->r_offset == offset)
7817 struct ppc_link_hash_entry *fdh = NULL;
7819 /* See if the .opd entry is full 24 byte or
7820 16 byte (with fd_aux entry overlapped with next
7823 if ((rel + 2 == relend && sec->size == offset + 16)
7824 || (rel + 3 < relend
7825 && rel[2].r_offset == offset + 16
7826 && rel[3].r_offset == offset + 24
7827 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7828 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7832 && h->root.root.string[0] == '.')
7834 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7836 && fdh->elf.root.type != bfd_link_hash_defined
7837 && fdh->elf.root.type != bfd_link_hash_defweak)
7841 skip = (sym_sec->owner != ibfd
7842 || sym_sec->output_section == bfd_abs_section_ptr);
7845 if (fdh != NULL && sym_sec->owner == ibfd)
7847 /* Arrange for the function descriptor sym
7849 fdh->elf.root.u.def.value = 0;
7850 fdh->elf.root.u.def.section = sym_sec;
7852 opd->adjust[rel->r_offset / 8] = -1;
7856 /* We'll be keeping this opd entry. */
7860 /* Redefine the function descriptor symbol to
7861 this location in the opd section. It is
7862 necessary to update the value here rather
7863 than using an array of adjustments as we do
7864 for local symbols, because various places
7865 in the generic ELF code use the value
7866 stored in u.def.value. */
7867 fdh->elf.root.u.def.value = wptr - new_contents;
7868 fdh->adjust_done = 1;
7871 /* Local syms are a bit tricky. We could
7872 tweak them as they can be cached, but
7873 we'd need to look through the local syms
7874 for the function descriptor sym which we
7875 don't have at the moment. So keep an
7876 array of adjustments. */
7877 opd->adjust[rel->r_offset / 8]
7878 = (wptr - new_contents) - (rptr - sec->contents);
7881 memcpy (wptr, rptr, opd_ent_size);
7882 wptr += opd_ent_size;
7883 if (add_aux_fields && opd_ent_size == 16)
7885 memset (wptr, '\0', 8);
7889 rptr += opd_ent_size;
7890 offset += opd_ent_size;
7896 && !info->relocatable
7897 && !dec_dynrel_count (rel->r_info, sec, info,
7903 /* We need to adjust any reloc offsets to point to the
7904 new opd entries. While we're at it, we may as well
7905 remove redundant relocs. */
7906 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7907 if (write_rel != rel)
7908 memcpy (write_rel, rel, sizeof (*rel));
7913 sec->size = wptr - new_contents;
7914 sec->reloc_count = write_rel - relstart;
7917 free (sec->contents);
7918 sec->contents = new_contents;
7921 /* Fudge the header size too, as this is used later in
7922 elf_bfd_final_link if we are emitting relocs. */
7923 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7924 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7927 else if (elf_section_data (sec)->relocs != relstart)
7930 if (local_syms != NULL
7931 && symtab_hdr->contents != (unsigned char *) local_syms)
7933 if (!info->keep_memory)
7936 symtab_hdr->contents = (unsigned char *) local_syms;
7941 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7943 /* If we are doing a final link and the last .opd entry is just 16 byte
7944 long, add a 8 byte padding after it. */
7945 if (need_pad != NULL && !info->relocatable)
7949 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7951 BFD_ASSERT (need_pad->size > 0);
7953 p = bfd_malloc (need_pad->size + 8);
7957 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7958 p, 0, need_pad->size))
7961 need_pad->contents = p;
7962 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7966 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7970 need_pad->contents = p;
7973 memset (need_pad->contents + need_pad->size, 0, 8);
7974 need_pad->size += 8;
7980 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7983 ppc64_elf_tls_setup (struct bfd_link_info *info)
7985 struct ppc_link_hash_table *htab;
7987 htab = ppc_hash_table (info);
7991 if (abiversion (info->output_bfd) == 1)
7994 if (htab->params->no_multi_toc)
7995 htab->do_multi_toc = 0;
7996 else if (!htab->do_multi_toc)
7997 htab->params->no_multi_toc = 1;
7999 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8000 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8001 FALSE, FALSE, TRUE));
8002 /* Move dynamic linking info to the function descriptor sym. */
8003 if (htab->tls_get_addr != NULL)
8004 func_desc_adjust (&htab->tls_get_addr->elf, info);
8005 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8006 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8007 FALSE, FALSE, TRUE));
8008 if (!htab->params->no_tls_get_addr_opt)
8010 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8012 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8013 FALSE, FALSE, TRUE);
8015 func_desc_adjust (opt, info);
8016 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8017 FALSE, FALSE, TRUE);
8019 && (opt_fd->root.type == bfd_link_hash_defined
8020 || opt_fd->root.type == bfd_link_hash_defweak))
8022 /* If glibc supports an optimized __tls_get_addr call stub,
8023 signalled by the presence of __tls_get_addr_opt, and we'll
8024 be calling __tls_get_addr via a plt call stub, then
8025 make __tls_get_addr point to __tls_get_addr_opt. */
8026 tga_fd = &htab->tls_get_addr_fd->elf;
8027 if (htab->elf.dynamic_sections_created
8029 && (tga_fd->type == STT_FUNC
8030 || tga_fd->needs_plt)
8031 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8032 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8033 && tga_fd->root.type == bfd_link_hash_undefweak)))
8035 struct plt_entry *ent;
8037 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8038 if (ent->plt.refcount > 0)
8042 tga_fd->root.type = bfd_link_hash_indirect;
8043 tga_fd->root.u.i.link = &opt_fd->root;
8044 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8045 if (opt_fd->dynindx != -1)
8047 /* Use __tls_get_addr_opt in dynamic relocations. */
8048 opt_fd->dynindx = -1;
8049 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8050 opt_fd->dynstr_index);
8051 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8054 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8055 tga = &htab->tls_get_addr->elf;
8056 if (opt != NULL && tga != NULL)
8058 tga->root.type = bfd_link_hash_indirect;
8059 tga->root.u.i.link = &opt->root;
8060 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8061 _bfd_elf_link_hash_hide_symbol (info, opt,
8063 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8065 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8066 htab->tls_get_addr_fd->is_func_descriptor = 1;
8067 if (htab->tls_get_addr != NULL)
8069 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8070 htab->tls_get_addr->is_func = 1;
8076 htab->params->no_tls_get_addr_opt = TRUE;
8078 return _bfd_elf_tls_setup (info->output_bfd, info);
8081 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8085 branch_reloc_hash_match (const bfd *ibfd,
8086 const Elf_Internal_Rela *rel,
8087 const struct ppc_link_hash_entry *hash1,
8088 const struct ppc_link_hash_entry *hash2)
8090 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8091 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8092 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8094 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8096 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8097 struct elf_link_hash_entry *h;
8099 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8100 h = elf_follow_link (h);
8101 if (h == &hash1->elf || h == &hash2->elf)
8107 /* Run through all the TLS relocs looking for optimization
8108 opportunities. The linker has been hacked (see ppc64elf.em) to do
8109 a preliminary section layout so that we know the TLS segment
8110 offsets. We can't optimize earlier because some optimizations need
8111 to know the tp offset, and we need to optimize before allocating
8112 dynamic relocations. */
8115 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8119 struct ppc_link_hash_table *htab;
8120 unsigned char *toc_ref;
8123 if (info->relocatable || !info->executable)
8126 htab = ppc_hash_table (info);
8130 /* Make two passes over the relocs. On the first pass, mark toc
8131 entries involved with tls relocs, and check that tls relocs
8132 involved in setting up a tls_get_addr call are indeed followed by
8133 such a call. If they are not, we can't do any tls optimization.
8134 On the second pass twiddle tls_mask flags to notify
8135 relocate_section that optimization can be done, and adjust got
8136 and plt refcounts. */
8138 for (pass = 0; pass < 2; ++pass)
8139 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8141 Elf_Internal_Sym *locsyms = NULL;
8142 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8144 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8145 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8147 Elf_Internal_Rela *relstart, *rel, *relend;
8148 bfd_boolean found_tls_get_addr_arg = 0;
8150 /* Read the relocations. */
8151 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8153 if (relstart == NULL)
8159 relend = relstart + sec->reloc_count;
8160 for (rel = relstart; rel < relend; rel++)
8162 enum elf_ppc64_reloc_type r_type;
8163 unsigned long r_symndx;
8164 struct elf_link_hash_entry *h;
8165 Elf_Internal_Sym *sym;
8167 unsigned char *tls_mask;
8168 unsigned char tls_set, tls_clear, tls_type = 0;
8170 bfd_boolean ok_tprel, is_local;
8171 long toc_ref_index = 0;
8172 int expecting_tls_get_addr = 0;
8173 bfd_boolean ret = FALSE;
8175 r_symndx = ELF64_R_SYM (rel->r_info);
8176 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8180 if (elf_section_data (sec)->relocs != relstart)
8182 if (toc_ref != NULL)
8185 && (elf_symtab_hdr (ibfd).contents
8186 != (unsigned char *) locsyms))
8193 if (h->root.type == bfd_link_hash_defined
8194 || h->root.type == bfd_link_hash_defweak)
8195 value = h->root.u.def.value;
8196 else if (h->root.type == bfd_link_hash_undefweak)
8200 found_tls_get_addr_arg = 0;
8205 /* Symbols referenced by TLS relocs must be of type
8206 STT_TLS. So no need for .opd local sym adjust. */
8207 value = sym->st_value;
8216 && h->root.type == bfd_link_hash_undefweak)
8220 value += sym_sec->output_offset;
8221 value += sym_sec->output_section->vma;
8222 value -= htab->elf.tls_sec->vma;
8223 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8224 < (bfd_vma) 1 << 32);
8228 r_type = ELF64_R_TYPE (rel->r_info);
8229 /* If this section has old-style __tls_get_addr calls
8230 without marker relocs, then check that each
8231 __tls_get_addr call reloc is preceded by a reloc
8232 that conceivably belongs to the __tls_get_addr arg
8233 setup insn. If we don't find matching arg setup
8234 relocs, don't do any tls optimization. */
8236 && sec->has_tls_get_addr_call
8238 && (h == &htab->tls_get_addr->elf
8239 || h == &htab->tls_get_addr_fd->elf)
8240 && !found_tls_get_addr_arg
8241 && is_branch_reloc (r_type))
8243 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8244 "TLS optimization disabled\n"),
8245 ibfd, sec, rel->r_offset);
8250 found_tls_get_addr_arg = 0;
8253 case R_PPC64_GOT_TLSLD16:
8254 case R_PPC64_GOT_TLSLD16_LO:
8255 expecting_tls_get_addr = 1;
8256 found_tls_get_addr_arg = 1;
8259 case R_PPC64_GOT_TLSLD16_HI:
8260 case R_PPC64_GOT_TLSLD16_HA:
8261 /* These relocs should never be against a symbol
8262 defined in a shared lib. Leave them alone if
8263 that turns out to be the case. */
8270 tls_type = TLS_TLS | TLS_LD;
8273 case R_PPC64_GOT_TLSGD16:
8274 case R_PPC64_GOT_TLSGD16_LO:
8275 expecting_tls_get_addr = 1;
8276 found_tls_get_addr_arg = 1;
8279 case R_PPC64_GOT_TLSGD16_HI:
8280 case R_PPC64_GOT_TLSGD16_HA:
8286 tls_set = TLS_TLS | TLS_TPRELGD;
8288 tls_type = TLS_TLS | TLS_GD;
8291 case R_PPC64_GOT_TPREL16_DS:
8292 case R_PPC64_GOT_TPREL16_LO_DS:
8293 case R_PPC64_GOT_TPREL16_HI:
8294 case R_PPC64_GOT_TPREL16_HA:
8299 tls_clear = TLS_TPREL;
8300 tls_type = TLS_TLS | TLS_TPREL;
8307 found_tls_get_addr_arg = 1;
8312 case R_PPC64_TOC16_LO:
8313 if (sym_sec == NULL || sym_sec != toc)
8316 /* Mark this toc entry as referenced by a TLS
8317 code sequence. We can do that now in the
8318 case of R_PPC64_TLS, and after checking for
8319 tls_get_addr for the TOC16 relocs. */
8320 if (toc_ref == NULL)
8321 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8322 if (toc_ref == NULL)
8326 value = h->root.u.def.value;
8328 value = sym->st_value;
8329 value += rel->r_addend;
8330 BFD_ASSERT (value < toc->size && value % 8 == 0);
8331 toc_ref_index = (value + toc->output_offset) / 8;
8332 if (r_type == R_PPC64_TLS
8333 || r_type == R_PPC64_TLSGD
8334 || r_type == R_PPC64_TLSLD)
8336 toc_ref[toc_ref_index] = 1;
8340 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8345 expecting_tls_get_addr = 2;
8348 case R_PPC64_TPREL64:
8352 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8357 tls_set = TLS_EXPLICIT;
8358 tls_clear = TLS_TPREL;
8363 case R_PPC64_DTPMOD64:
8367 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8369 if (rel + 1 < relend
8371 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8372 && rel[1].r_offset == rel->r_offset + 8)
8376 tls_set = TLS_EXPLICIT | TLS_GD;
8379 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8388 tls_set = TLS_EXPLICIT;
8399 if (!expecting_tls_get_addr
8400 || !sec->has_tls_get_addr_call)
8403 if (rel + 1 < relend
8404 && branch_reloc_hash_match (ibfd, rel + 1,
8406 htab->tls_get_addr_fd))
8408 if (expecting_tls_get_addr == 2)
8410 /* Check for toc tls entries. */
8411 unsigned char *toc_tls;
8414 retval = get_tls_mask (&toc_tls, NULL, NULL,
8419 if (toc_tls != NULL)
8421 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8422 found_tls_get_addr_arg = 1;
8424 toc_ref[toc_ref_index] = 1;
8430 if (expecting_tls_get_addr != 1)
8433 /* Uh oh, we didn't find the expected call. We
8434 could just mark this symbol to exclude it
8435 from tls optimization but it's safer to skip
8436 the entire optimization. */
8437 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8438 "TLS optimization disabled\n"),
8439 ibfd, sec, rel->r_offset);
8444 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8446 struct plt_entry *ent;
8447 for (ent = htab->tls_get_addr->elf.plt.plist;
8450 if (ent->addend == 0)
8452 if (ent->plt.refcount > 0)
8454 ent->plt.refcount -= 1;
8455 expecting_tls_get_addr = 0;
8461 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8463 struct plt_entry *ent;
8464 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8467 if (ent->addend == 0)
8469 if (ent->plt.refcount > 0)
8470 ent->plt.refcount -= 1;
8478 if ((tls_set & TLS_EXPLICIT) == 0)
8480 struct got_entry *ent;
8482 /* Adjust got entry for this reloc. */
8486 ent = elf_local_got_ents (ibfd)[r_symndx];
8488 for (; ent != NULL; ent = ent->next)
8489 if (ent->addend == rel->r_addend
8490 && ent->owner == ibfd
8491 && ent->tls_type == tls_type)
8498 /* We managed to get rid of a got entry. */
8499 if (ent->got.refcount > 0)
8500 ent->got.refcount -= 1;
8505 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8506 we'll lose one or two dyn relocs. */
8507 if (!dec_dynrel_count (rel->r_info, sec, info,
8511 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8513 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8519 *tls_mask |= tls_set;
8520 *tls_mask &= ~tls_clear;
8523 if (elf_section_data (sec)->relocs != relstart)
8528 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8530 if (!info->keep_memory)
8533 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8537 if (toc_ref != NULL)
8542 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8543 the values of any global symbols in a toc section that has been
8544 edited. Globals in toc sections should be a rarity, so this function
8545 sets a flag if any are found in toc sections other than the one just
8546 edited, so that futher hash table traversals can be avoided. */
8548 struct adjust_toc_info
8551 unsigned long *skip;
8552 bfd_boolean global_toc_syms;
8555 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8558 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8560 struct ppc_link_hash_entry *eh;
8561 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8564 if (h->root.type != bfd_link_hash_defined
8565 && h->root.type != bfd_link_hash_defweak)
8568 eh = (struct ppc_link_hash_entry *) h;
8569 if (eh->adjust_done)
8572 if (eh->elf.root.u.def.section == toc_inf->toc)
8574 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8575 i = toc_inf->toc->rawsize >> 3;
8577 i = eh->elf.root.u.def.value >> 3;
8579 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8581 (*_bfd_error_handler)
8582 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8585 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8586 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8589 eh->elf.root.u.def.value -= toc_inf->skip[i];
8590 eh->adjust_done = 1;
8592 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8593 toc_inf->global_toc_syms = TRUE;
8598 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8601 ok_lo_toc_insn (unsigned int insn)
8603 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8604 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8605 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8606 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8607 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8608 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8609 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8610 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8611 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8612 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8613 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8614 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8615 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8616 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8617 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8619 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8620 && ((insn & 3) == 0 || (insn & 3) == 3))
8621 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8624 /* Examine all relocs referencing .toc sections in order to remove
8625 unused .toc entries. */
8628 ppc64_elf_edit_toc (struct bfd_link_info *info)
8631 struct adjust_toc_info toc_inf;
8632 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8634 htab->do_toc_opt = 1;
8635 toc_inf.global_toc_syms = TRUE;
8636 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8638 asection *toc, *sec;
8639 Elf_Internal_Shdr *symtab_hdr;
8640 Elf_Internal_Sym *local_syms;
8641 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8642 unsigned long *skip, *drop;
8643 unsigned char *used;
8644 unsigned char *keep, last, some_unused;
8646 if (!is_ppc64_elf (ibfd))
8649 toc = bfd_get_section_by_name (ibfd, ".toc");
8652 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8653 || discarded_section (toc))
8658 symtab_hdr = &elf_symtab_hdr (ibfd);
8660 /* Look at sections dropped from the final link. */
8663 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8665 if (sec->reloc_count == 0
8666 || !discarded_section (sec)
8667 || get_opd_info (sec)
8668 || (sec->flags & SEC_ALLOC) == 0
8669 || (sec->flags & SEC_DEBUGGING) != 0)
8672 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8673 if (relstart == NULL)
8676 /* Run through the relocs to see which toc entries might be
8678 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8680 enum elf_ppc64_reloc_type r_type;
8681 unsigned long r_symndx;
8683 struct elf_link_hash_entry *h;
8684 Elf_Internal_Sym *sym;
8687 r_type = ELF64_R_TYPE (rel->r_info);
8694 case R_PPC64_TOC16_LO:
8695 case R_PPC64_TOC16_HI:
8696 case R_PPC64_TOC16_HA:
8697 case R_PPC64_TOC16_DS:
8698 case R_PPC64_TOC16_LO_DS:
8702 r_symndx = ELF64_R_SYM (rel->r_info);
8703 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8711 val = h->root.u.def.value;
8713 val = sym->st_value;
8714 val += rel->r_addend;
8716 if (val >= toc->size)
8719 /* Anything in the toc ought to be aligned to 8 bytes.
8720 If not, don't mark as unused. */
8726 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8731 skip[val >> 3] = ref_from_discarded;
8734 if (elf_section_data (sec)->relocs != relstart)
8738 /* For largetoc loads of address constants, we can convert
8739 . addis rx,2,addr@got@ha
8740 . ld ry,addr@got@l(rx)
8742 . addis rx,2,addr@toc@ha
8743 . addi ry,rx,addr@toc@l
8744 when addr is within 2G of the toc pointer. This then means
8745 that the word storing "addr" in the toc is no longer needed. */
8747 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8748 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8749 && toc->reloc_count != 0)
8751 /* Read toc relocs. */
8752 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8754 if (toc_relocs == NULL)
8757 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8759 enum elf_ppc64_reloc_type r_type;
8760 unsigned long r_symndx;
8762 struct elf_link_hash_entry *h;
8763 Elf_Internal_Sym *sym;
8766 r_type = ELF64_R_TYPE (rel->r_info);
8767 if (r_type != R_PPC64_ADDR64)
8770 r_symndx = ELF64_R_SYM (rel->r_info);
8771 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8776 || discarded_section (sym_sec))
8779 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8784 if (h->type == STT_GNU_IFUNC)
8786 val = h->root.u.def.value;
8790 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8792 val = sym->st_value;
8794 val += rel->r_addend;
8795 val += sym_sec->output_section->vma + sym_sec->output_offset;
8797 /* We don't yet know the exact toc pointer value, but we
8798 know it will be somewhere in the toc section. Don't
8799 optimize if the difference from any possible toc
8800 pointer is outside [ff..f80008000, 7fff7fff]. */
8801 addr = toc->output_section->vma + TOC_BASE_OFF;
8802 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8805 addr = toc->output_section->vma + toc->output_section->rawsize;
8806 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8811 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8816 skip[rel->r_offset >> 3]
8817 |= can_optimize | ((rel - toc_relocs) << 2);
8824 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8828 if (local_syms != NULL
8829 && symtab_hdr->contents != (unsigned char *) local_syms)
8833 && elf_section_data (sec)->relocs != relstart)
8835 if (toc_relocs != NULL
8836 && elf_section_data (toc)->relocs != toc_relocs)
8843 /* Now check all kept sections that might reference the toc.
8844 Check the toc itself last. */
8845 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8848 sec = (sec == toc ? NULL
8849 : sec->next == NULL ? toc
8850 : sec->next == toc && toc->next ? toc->next
8855 if (sec->reloc_count == 0
8856 || discarded_section (sec)
8857 || get_opd_info (sec)
8858 || (sec->flags & SEC_ALLOC) == 0
8859 || (sec->flags & SEC_DEBUGGING) != 0)
8862 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8864 if (relstart == NULL)
8870 /* Mark toc entries referenced as used. */
8874 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8876 enum elf_ppc64_reloc_type r_type;
8877 unsigned long r_symndx;
8879 struct elf_link_hash_entry *h;
8880 Elf_Internal_Sym *sym;
8882 enum {no_check, check_lo, check_ha} insn_check;
8884 r_type = ELF64_R_TYPE (rel->r_info);
8888 insn_check = no_check;
8891 case R_PPC64_GOT_TLSLD16_HA:
8892 case R_PPC64_GOT_TLSGD16_HA:
8893 case R_PPC64_GOT_TPREL16_HA:
8894 case R_PPC64_GOT_DTPREL16_HA:
8895 case R_PPC64_GOT16_HA:
8896 case R_PPC64_TOC16_HA:
8897 insn_check = check_ha;
8900 case R_PPC64_GOT_TLSLD16_LO:
8901 case R_PPC64_GOT_TLSGD16_LO:
8902 case R_PPC64_GOT_TPREL16_LO_DS:
8903 case R_PPC64_GOT_DTPREL16_LO_DS:
8904 case R_PPC64_GOT16_LO:
8905 case R_PPC64_GOT16_LO_DS:
8906 case R_PPC64_TOC16_LO:
8907 case R_PPC64_TOC16_LO_DS:
8908 insn_check = check_lo;
8912 if (insn_check != no_check)
8914 bfd_vma off = rel->r_offset & ~3;
8915 unsigned char buf[4];
8918 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8923 insn = bfd_get_32 (ibfd, buf);
8924 if (insn_check == check_lo
8925 ? !ok_lo_toc_insn (insn)
8926 : ((insn & ((0x3f << 26) | 0x1f << 16))
8927 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8931 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8932 sprintf (str, "%#08x", insn);
8933 info->callbacks->einfo
8934 (_("%P: %H: toc optimization is not supported for"
8935 " %s instruction.\n"),
8936 ibfd, sec, rel->r_offset & ~3, str);
8943 case R_PPC64_TOC16_LO:
8944 case R_PPC64_TOC16_HI:
8945 case R_PPC64_TOC16_HA:
8946 case R_PPC64_TOC16_DS:
8947 case R_PPC64_TOC16_LO_DS:
8948 /* In case we're taking addresses of toc entries. */
8949 case R_PPC64_ADDR64:
8956 r_symndx = ELF64_R_SYM (rel->r_info);
8957 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8968 val = h->root.u.def.value;
8970 val = sym->st_value;
8971 val += rel->r_addend;
8973 if (val >= toc->size)
8976 if ((skip[val >> 3] & can_optimize) != 0)
8983 case R_PPC64_TOC16_HA:
8986 case R_PPC64_TOC16_LO_DS:
8987 off = rel->r_offset;
8988 off += (bfd_big_endian (ibfd) ? -2 : 3);
8989 if (!bfd_get_section_contents (ibfd, sec, &opc,
8995 if ((opc & (0x3f << 2)) == (58u << 2))
9000 /* Wrong sort of reloc, or not a ld. We may
9001 as well clear ref_from_discarded too. */
9008 /* For the toc section, we only mark as used if this
9009 entry itself isn't unused. */
9010 else if ((used[rel->r_offset >> 3]
9011 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9014 /* Do all the relocs again, to catch reference
9023 if (elf_section_data (sec)->relocs != relstart)
9027 /* Merge the used and skip arrays. Assume that TOC
9028 doublewords not appearing as either used or unused belong
9029 to to an entry more than one doubleword in size. */
9030 for (drop = skip, keep = used, last = 0, some_unused = 0;
9031 drop < skip + (toc->size + 7) / 8;
9036 *drop &= ~ref_from_discarded;
9037 if ((*drop & can_optimize) != 0)
9041 else if ((*drop & ref_from_discarded) != 0)
9044 last = ref_from_discarded;
9054 bfd_byte *contents, *src;
9056 Elf_Internal_Sym *sym;
9057 bfd_boolean local_toc_syms = FALSE;
9059 /* Shuffle the toc contents, and at the same time convert the
9060 skip array from booleans into offsets. */
9061 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9064 elf_section_data (toc)->this_hdr.contents = contents;
9066 for (src = contents, off = 0, drop = skip;
9067 src < contents + toc->size;
9070 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9075 memcpy (src - off, src, 8);
9079 toc->rawsize = toc->size;
9080 toc->size = src - contents - off;
9082 /* Adjust addends for relocs against the toc section sym,
9083 and optimize any accesses we can. */
9084 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9086 if (sec->reloc_count == 0
9087 || discarded_section (sec))
9090 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9092 if (relstart == NULL)
9095 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9097 enum elf_ppc64_reloc_type r_type;
9098 unsigned long r_symndx;
9100 struct elf_link_hash_entry *h;
9103 r_type = ELF64_R_TYPE (rel->r_info);
9110 case R_PPC64_TOC16_LO:
9111 case R_PPC64_TOC16_HI:
9112 case R_PPC64_TOC16_HA:
9113 case R_PPC64_TOC16_DS:
9114 case R_PPC64_TOC16_LO_DS:
9115 case R_PPC64_ADDR64:
9119 r_symndx = ELF64_R_SYM (rel->r_info);
9120 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9128 val = h->root.u.def.value;
9131 val = sym->st_value;
9133 local_toc_syms = TRUE;
9136 val += rel->r_addend;
9138 if (val > toc->rawsize)
9140 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9142 else if ((skip[val >> 3] & can_optimize) != 0)
9144 Elf_Internal_Rela *tocrel
9145 = toc_relocs + (skip[val >> 3] >> 2);
9146 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9150 case R_PPC64_TOC16_HA:
9151 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9154 case R_PPC64_TOC16_LO_DS:
9155 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9159 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9161 info->callbacks->einfo
9162 (_("%P: %H: %s references "
9163 "optimized away TOC entry\n"),
9164 ibfd, sec, rel->r_offset,
9165 ppc64_elf_howto_table[r_type]->name);
9166 bfd_set_error (bfd_error_bad_value);
9169 rel->r_addend = tocrel->r_addend;
9170 elf_section_data (sec)->relocs = relstart;
9174 if (h != NULL || sym->st_value != 0)
9177 rel->r_addend -= skip[val >> 3];
9178 elf_section_data (sec)->relocs = relstart;
9181 if (elf_section_data (sec)->relocs != relstart)
9185 /* We shouldn't have local or global symbols defined in the TOC,
9186 but handle them anyway. */
9187 if (local_syms != NULL)
9188 for (sym = local_syms;
9189 sym < local_syms + symtab_hdr->sh_info;
9191 if (sym->st_value != 0
9192 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9196 if (sym->st_value > toc->rawsize)
9197 i = toc->rawsize >> 3;
9199 i = sym->st_value >> 3;
9201 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9204 (*_bfd_error_handler)
9205 (_("%s defined on removed toc entry"),
9206 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9209 while ((skip[i] & (ref_from_discarded | can_optimize)));
9210 sym->st_value = (bfd_vma) i << 3;
9213 sym->st_value -= skip[i];
9214 symtab_hdr->contents = (unsigned char *) local_syms;
9217 /* Adjust any global syms defined in this toc input section. */
9218 if (toc_inf.global_toc_syms)
9221 toc_inf.skip = skip;
9222 toc_inf.global_toc_syms = FALSE;
9223 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9227 if (toc->reloc_count != 0)
9229 Elf_Internal_Shdr *rel_hdr;
9230 Elf_Internal_Rela *wrel;
9233 /* Remove unused toc relocs, and adjust those we keep. */
9234 if (toc_relocs == NULL)
9235 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9237 if (toc_relocs == NULL)
9241 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9242 if ((skip[rel->r_offset >> 3]
9243 & (ref_from_discarded | can_optimize)) == 0)
9245 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9246 wrel->r_info = rel->r_info;
9247 wrel->r_addend = rel->r_addend;
9250 else if (!dec_dynrel_count (rel->r_info, toc, info,
9251 &local_syms, NULL, NULL))
9254 elf_section_data (toc)->relocs = toc_relocs;
9255 toc->reloc_count = wrel - toc_relocs;
9256 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9257 sz = rel_hdr->sh_entsize;
9258 rel_hdr->sh_size = toc->reloc_count * sz;
9261 else if (toc_relocs != NULL
9262 && elf_section_data (toc)->relocs != toc_relocs)
9265 if (local_syms != NULL
9266 && symtab_hdr->contents != (unsigned char *) local_syms)
9268 if (!info->keep_memory)
9271 symtab_hdr->contents = (unsigned char *) local_syms;
9279 /* Return true iff input section I references the TOC using
9280 instructions limited to +/-32k offsets. */
9283 ppc64_elf_has_small_toc_reloc (asection *i)
9285 return (is_ppc64_elf (i->owner)
9286 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9289 /* Allocate space for one GOT entry. */
9292 allocate_got (struct elf_link_hash_entry *h,
9293 struct bfd_link_info *info,
9294 struct got_entry *gent)
9296 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9298 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9299 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9301 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9302 ? 2 : 1) * sizeof (Elf64_External_Rela);
9303 asection *got = ppc64_elf_tdata (gent->owner)->got;
9305 gent->got.offset = got->size;
9306 got->size += entsize;
9308 dyn = htab->elf.dynamic_sections_created;
9309 if (h->type == STT_GNU_IFUNC)
9311 htab->elf.irelplt->size += rentsize;
9312 htab->got_reli_size += rentsize;
9314 else if ((info->shared
9315 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9316 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9317 || h->root.type != bfd_link_hash_undefweak))
9319 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9320 relgot->size += rentsize;
9324 /* This function merges got entries in the same toc group. */
9327 merge_got_entries (struct got_entry **pent)
9329 struct got_entry *ent, *ent2;
9331 for (ent = *pent; ent != NULL; ent = ent->next)
9332 if (!ent->is_indirect)
9333 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9334 if (!ent2->is_indirect
9335 && ent2->addend == ent->addend
9336 && ent2->tls_type == ent->tls_type
9337 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9339 ent2->is_indirect = TRUE;
9340 ent2->got.ent = ent;
9344 /* Allocate space in .plt, .got and associated reloc sections for
9348 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9350 struct bfd_link_info *info;
9351 struct ppc_link_hash_table *htab;
9353 struct ppc_link_hash_entry *eh;
9354 struct elf_dyn_relocs *p;
9355 struct got_entry **pgent, *gent;
9357 if (h->root.type == bfd_link_hash_indirect)
9360 info = (struct bfd_link_info *) inf;
9361 htab = ppc_hash_table (info);
9365 if ((htab->elf.dynamic_sections_created
9367 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9368 || h->type == STT_GNU_IFUNC)
9370 struct plt_entry *pent;
9371 bfd_boolean doneone = FALSE;
9372 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9373 if (pent->plt.refcount > 0)
9375 if (!htab->elf.dynamic_sections_created
9376 || h->dynindx == -1)
9379 pent->plt.offset = s->size;
9380 s->size += PLT_ENTRY_SIZE (htab);
9381 s = htab->elf.irelplt;
9385 /* If this is the first .plt entry, make room for the special
9389 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9391 pent->plt.offset = s->size;
9393 /* Make room for this entry. */
9394 s->size += PLT_ENTRY_SIZE (htab);
9396 /* Make room for the .glink code. */
9399 s->size += GLINK_CALL_STUB_SIZE;
9402 /* We need bigger stubs past index 32767. */
9403 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9410 /* We also need to make an entry in the .rela.plt section. */
9411 s = htab->elf.srelplt;
9413 s->size += sizeof (Elf64_External_Rela);
9417 pent->plt.offset = (bfd_vma) -1;
9420 h->plt.plist = NULL;
9426 h->plt.plist = NULL;
9430 eh = (struct ppc_link_hash_entry *) h;
9431 /* Run through the TLS GD got entries first if we're changing them
9433 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9434 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9435 if (gent->got.refcount > 0
9436 && (gent->tls_type & TLS_GD) != 0)
9438 /* This was a GD entry that has been converted to TPREL. If
9439 there happens to be a TPREL entry we can use that one. */
9440 struct got_entry *ent;
9441 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9442 if (ent->got.refcount > 0
9443 && (ent->tls_type & TLS_TPREL) != 0
9444 && ent->addend == gent->addend
9445 && ent->owner == gent->owner)
9447 gent->got.refcount = 0;
9451 /* If not, then we'll be using our own TPREL entry. */
9452 if (gent->got.refcount != 0)
9453 gent->tls_type = TLS_TLS | TLS_TPREL;
9456 /* Remove any list entry that won't generate a word in the GOT before
9457 we call merge_got_entries. Otherwise we risk merging to empty
9459 pgent = &h->got.glist;
9460 while ((gent = *pgent) != NULL)
9461 if (gent->got.refcount > 0)
9463 if ((gent->tls_type & TLS_LD) != 0
9466 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9467 *pgent = gent->next;
9470 pgent = &gent->next;
9473 *pgent = gent->next;
9475 if (!htab->do_multi_toc)
9476 merge_got_entries (&h->got.glist);
9478 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9479 if (!gent->is_indirect)
9481 /* Make sure this symbol is output as a dynamic symbol.
9482 Undefined weak syms won't yet be marked as dynamic,
9483 nor will all TLS symbols. */
9484 if (h->dynindx == -1
9486 && h->type != STT_GNU_IFUNC
9487 && htab->elf.dynamic_sections_created)
9489 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9493 if (!is_ppc64_elf (gent->owner))
9496 allocate_got (h, info, gent);
9499 if (eh->dyn_relocs == NULL
9500 || (!htab->elf.dynamic_sections_created
9501 && h->type != STT_GNU_IFUNC))
9504 /* In the shared -Bsymbolic case, discard space allocated for
9505 dynamic pc-relative relocs against symbols which turn out to be
9506 defined in regular objects. For the normal shared case, discard
9507 space for relocs that have become local due to symbol visibility
9512 /* Relocs that use pc_count are those that appear on a call insn,
9513 or certain REL relocs (see must_be_dyn_reloc) that can be
9514 generated via assembly. We want calls to protected symbols to
9515 resolve directly to the function rather than going via the plt.
9516 If people want function pointer comparisons to work as expected
9517 then they should avoid writing weird assembly. */
9518 if (SYMBOL_CALLS_LOCAL (info, h))
9520 struct elf_dyn_relocs **pp;
9522 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9524 p->count -= p->pc_count;
9533 /* Also discard relocs on undefined weak syms with non-default
9535 if (eh->dyn_relocs != NULL
9536 && h->root.type == bfd_link_hash_undefweak)
9538 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9539 eh->dyn_relocs = NULL;
9541 /* Make sure this symbol is output as a dynamic symbol.
9542 Undefined weak syms won't yet be marked as dynamic. */
9543 else if (h->dynindx == -1
9544 && !h->forced_local)
9546 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9551 else if (h->type == STT_GNU_IFUNC)
9553 if (!h->non_got_ref)
9554 eh->dyn_relocs = NULL;
9556 else if (ELIMINATE_COPY_RELOCS)
9558 /* For the non-shared case, discard space for relocs against
9559 symbols which turn out to need copy relocs or are not
9565 /* Make sure this symbol is output as a dynamic symbol.
9566 Undefined weak syms won't yet be marked as dynamic. */
9567 if (h->dynindx == -1
9568 && !h->forced_local)
9570 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9574 /* If that succeeded, we know we'll be keeping all the
9576 if (h->dynindx != -1)
9580 eh->dyn_relocs = NULL;
9585 /* Finally, allocate space. */
9586 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9588 asection *sreloc = elf_section_data (p->sec)->sreloc;
9589 if (eh->elf.type == STT_GNU_IFUNC)
9590 sreloc = htab->elf.irelplt;
9591 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9597 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9598 to set up space for global entry stubs. These are put in glink,
9599 after the branch table. */
9602 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9604 struct bfd_link_info *info;
9605 struct ppc_link_hash_table *htab;
9606 struct plt_entry *pent;
9609 if (h->root.type == bfd_link_hash_indirect)
9612 if (!h->pointer_equality_needed)
9619 htab = ppc_hash_table (info);
9624 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9625 if (pent->plt.offset != (bfd_vma) -1
9626 && pent->addend == 0)
9628 /* For ELFv2, if this symbol is not defined in a regular file
9629 and we are not generating a shared library or pie, then we
9630 need to define the symbol in the executable on a call stub.
9631 This is to avoid text relocations. */
9632 s->size = (s->size + 15) & -16;
9633 h->root.u.def.section = s;
9634 h->root.u.def.value = s->size;
9641 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9642 read-only sections. */
9645 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9647 if (h->root.type == bfd_link_hash_indirect)
9650 if (readonly_dynrelocs (h))
9652 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9654 /* Not an error, just cut short the traversal. */
9660 /* Set the sizes of the dynamic sections. */
9663 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9664 struct bfd_link_info *info)
9666 struct ppc_link_hash_table *htab;
9671 struct got_entry *first_tlsld;
9673 htab = ppc_hash_table (info);
9677 dynobj = htab->elf.dynobj;
9681 if (htab->elf.dynamic_sections_created)
9683 /* Set the contents of the .interp section to the interpreter. */
9684 if (info->executable)
9686 s = bfd_get_linker_section (dynobj, ".interp");
9689 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9690 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9694 /* Set up .got offsets for local syms, and space for local dynamic
9696 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9698 struct got_entry **lgot_ents;
9699 struct got_entry **end_lgot_ents;
9700 struct plt_entry **local_plt;
9701 struct plt_entry **end_local_plt;
9702 unsigned char *lgot_masks;
9703 bfd_size_type locsymcount;
9704 Elf_Internal_Shdr *symtab_hdr;
9706 if (!is_ppc64_elf (ibfd))
9709 for (s = ibfd->sections; s != NULL; s = s->next)
9711 struct ppc_dyn_relocs *p;
9713 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9715 if (!bfd_is_abs_section (p->sec)
9716 && bfd_is_abs_section (p->sec->output_section))
9718 /* Input section has been discarded, either because
9719 it is a copy of a linkonce section or due to
9720 linker script /DISCARD/, so we'll be discarding
9723 else if (p->count != 0)
9725 asection *srel = elf_section_data (p->sec)->sreloc;
9727 srel = htab->elf.irelplt;
9728 srel->size += p->count * sizeof (Elf64_External_Rela);
9729 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9730 info->flags |= DF_TEXTREL;
9735 lgot_ents = elf_local_got_ents (ibfd);
9739 symtab_hdr = &elf_symtab_hdr (ibfd);
9740 locsymcount = symtab_hdr->sh_info;
9741 end_lgot_ents = lgot_ents + locsymcount;
9742 local_plt = (struct plt_entry **) end_lgot_ents;
9743 end_local_plt = local_plt + locsymcount;
9744 lgot_masks = (unsigned char *) end_local_plt;
9745 s = ppc64_elf_tdata (ibfd)->got;
9746 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9748 struct got_entry **pent, *ent;
9751 while ((ent = *pent) != NULL)
9752 if (ent->got.refcount > 0)
9754 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9756 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9761 unsigned int ent_size = 8;
9762 unsigned int rel_size = sizeof (Elf64_External_Rela);
9764 ent->got.offset = s->size;
9765 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9770 s->size += ent_size;
9771 if ((*lgot_masks & PLT_IFUNC) != 0)
9773 htab->elf.irelplt->size += rel_size;
9774 htab->got_reli_size += rel_size;
9776 else if (info->shared)
9778 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9779 srel->size += rel_size;
9788 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9789 for (; local_plt < end_local_plt; ++local_plt)
9791 struct plt_entry *ent;
9793 for (ent = *local_plt; ent != NULL; ent = ent->next)
9794 if (ent->plt.refcount > 0)
9797 ent->plt.offset = s->size;
9798 s->size += PLT_ENTRY_SIZE (htab);
9800 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9803 ent->plt.offset = (bfd_vma) -1;
9807 /* Allocate global sym .plt and .got entries, and space for global
9808 sym dynamic relocs. */
9809 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9810 /* Stash the end of glink branch table. */
9811 if (htab->glink != NULL)
9812 htab->glink->rawsize = htab->glink->size;
9814 if (!htab->opd_abi && !info->shared)
9815 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9818 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9820 struct got_entry *ent;
9822 if (!is_ppc64_elf (ibfd))
9825 ent = ppc64_tlsld_got (ibfd);
9826 if (ent->got.refcount > 0)
9828 if (!htab->do_multi_toc && first_tlsld != NULL)
9830 ent->is_indirect = TRUE;
9831 ent->got.ent = first_tlsld;
9835 if (first_tlsld == NULL)
9837 s = ppc64_elf_tdata (ibfd)->got;
9838 ent->got.offset = s->size;
9843 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9844 srel->size += sizeof (Elf64_External_Rela);
9849 ent->got.offset = (bfd_vma) -1;
9852 /* We now have determined the sizes of the various dynamic sections.
9853 Allocate memory for them. */
9855 for (s = dynobj->sections; s != NULL; s = s->next)
9857 if ((s->flags & SEC_LINKER_CREATED) == 0)
9860 if (s == htab->brlt || s == htab->relbrlt)
9861 /* These haven't been allocated yet; don't strip. */
9863 else if (s == htab->elf.sgot
9864 || s == htab->elf.splt
9865 || s == htab->elf.iplt
9867 || s == htab->dynbss)
9869 /* Strip this section if we don't need it; see the
9872 else if (s == htab->glink_eh_frame)
9874 if (!bfd_is_abs_section (s->output_section))
9875 /* Not sized yet. */
9878 else if (CONST_STRNEQ (s->name, ".rela"))
9882 if (s != htab->elf.srelplt)
9885 /* We use the reloc_count field as a counter if we need
9886 to copy relocs into the output file. */
9892 /* It's not one of our sections, so don't allocate space. */
9898 /* If we don't need this section, strip it from the
9899 output file. This is mostly to handle .rela.bss and
9900 .rela.plt. We must create both sections in
9901 create_dynamic_sections, because they must be created
9902 before the linker maps input sections to output
9903 sections. The linker does that before
9904 adjust_dynamic_symbol is called, and it is that
9905 function which decides whether anything needs to go
9906 into these sections. */
9907 s->flags |= SEC_EXCLUDE;
9911 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9914 /* Allocate memory for the section contents. We use bfd_zalloc
9915 here in case unused entries are not reclaimed before the
9916 section's contents are written out. This should not happen,
9917 but this way if it does we get a R_PPC64_NONE reloc in .rela
9918 sections instead of garbage.
9919 We also rely on the section contents being zero when writing
9921 s->contents = bfd_zalloc (dynobj, s->size);
9922 if (s->contents == NULL)
9926 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9928 if (!is_ppc64_elf (ibfd))
9931 s = ppc64_elf_tdata (ibfd)->got;
9932 if (s != NULL && s != htab->elf.sgot)
9935 s->flags |= SEC_EXCLUDE;
9938 s->contents = bfd_zalloc (ibfd, s->size);
9939 if (s->contents == NULL)
9943 s = ppc64_elf_tdata (ibfd)->relgot;
9947 s->flags |= SEC_EXCLUDE;
9950 s->contents = bfd_zalloc (ibfd, s->size);
9951 if (s->contents == NULL)
9959 if (htab->elf.dynamic_sections_created)
9961 bfd_boolean tls_opt;
9963 /* Add some entries to the .dynamic section. We fill in the
9964 values later, in ppc64_elf_finish_dynamic_sections, but we
9965 must add the entries now so that we get the correct size for
9966 the .dynamic section. The DT_DEBUG entry is filled in by the
9967 dynamic linker and used by the debugger. */
9968 #define add_dynamic_entry(TAG, VAL) \
9969 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9971 if (info->executable)
9973 if (!add_dynamic_entry (DT_DEBUG, 0))
9977 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9979 if (!add_dynamic_entry (DT_PLTGOT, 0)
9980 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9981 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9982 || !add_dynamic_entry (DT_JMPREL, 0)
9983 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9987 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9989 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9990 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9994 tls_opt = (!htab->params->no_tls_get_addr_opt
9995 && htab->tls_get_addr_fd != NULL
9996 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9997 if (tls_opt || !htab->opd_abi)
9999 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10005 if (!add_dynamic_entry (DT_RELA, 0)
10006 || !add_dynamic_entry (DT_RELASZ, 0)
10007 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10010 /* If any dynamic relocs apply to a read-only section,
10011 then we need a DT_TEXTREL entry. */
10012 if ((info->flags & DF_TEXTREL) == 0)
10013 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10015 if ((info->flags & DF_TEXTREL) != 0)
10017 if (!add_dynamic_entry (DT_TEXTREL, 0))
10022 #undef add_dynamic_entry
10027 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10030 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10032 if (h->plt.plist != NULL
10034 && !h->pointer_equality_needed)
10037 return _bfd_elf_hash_symbol (h);
10040 /* Determine the type of stub needed, if any, for a call. */
10042 static inline enum ppc_stub_type
10043 ppc_type_of_stub (asection *input_sec,
10044 const Elf_Internal_Rela *rel,
10045 struct ppc_link_hash_entry **hash,
10046 struct plt_entry **plt_ent,
10047 bfd_vma destination,
10048 unsigned long local_off)
10050 struct ppc_link_hash_entry *h = *hash;
10052 bfd_vma branch_offset;
10053 bfd_vma max_branch_offset;
10054 enum elf_ppc64_reloc_type r_type;
10058 struct plt_entry *ent;
10059 struct ppc_link_hash_entry *fdh = h;
10061 && h->oh->is_func_descriptor)
10063 fdh = ppc_follow_link (h->oh);
10067 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10068 if (ent->addend == rel->r_addend
10069 && ent->plt.offset != (bfd_vma) -1)
10072 return ppc_stub_plt_call;
10075 /* Here, we know we don't have a plt entry. If we don't have a
10076 either a defined function descriptor or a defined entry symbol
10077 in a regular object file, then it is pointless trying to make
10078 any other type of stub. */
10079 if (!is_static_defined (&fdh->elf)
10080 && !is_static_defined (&h->elf))
10081 return ppc_stub_none;
10083 else if (elf_local_got_ents (input_sec->owner) != NULL)
10085 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10086 struct plt_entry **local_plt = (struct plt_entry **)
10087 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10088 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10090 if (local_plt[r_symndx] != NULL)
10092 struct plt_entry *ent;
10094 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10095 if (ent->addend == rel->r_addend
10096 && ent->plt.offset != (bfd_vma) -1)
10099 return ppc_stub_plt_call;
10104 /* Determine where the call point is. */
10105 location = (input_sec->output_offset
10106 + input_sec->output_section->vma
10109 branch_offset = destination - location;
10110 r_type = ELF64_R_TYPE (rel->r_info);
10112 /* Determine if a long branch stub is needed. */
10113 max_branch_offset = 1 << 25;
10114 if (r_type != R_PPC64_REL24)
10115 max_branch_offset = 1 << 15;
10117 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10118 /* We need a stub. Figure out whether a long_branch or plt_branch
10119 is needed later. */
10120 return ppc_stub_long_branch;
10122 return ppc_stub_none;
10125 /* With power7 weakly ordered memory model, it is possible for ld.so
10126 to update a plt entry in one thread and have another thread see a
10127 stale zero toc entry. To avoid this we need some sort of acquire
10128 barrier in the call stub. One solution is to make the load of the
10129 toc word seem to appear to depend on the load of the function entry
10130 word. Another solution is to test for r2 being zero, and branch to
10131 the appropriate glink entry if so.
10133 . fake dep barrier compare
10134 . ld 12,xxx(2) ld 12,xxx(2)
10135 . mtctr 12 mtctr 12
10136 . xor 11,12,12 ld 2,xxx+8(2)
10137 . add 2,2,11 cmpldi 2,0
10138 . ld 2,xxx+8(2) bnectr+
10139 . bctr b <glink_entry>
10141 The solution involving the compare turns out to be faster, so
10142 that's what we use unless the branch won't reach. */
10144 #define ALWAYS_USE_FAKE_DEP 0
10145 #define ALWAYS_EMIT_R2SAVE 0
10147 #define PPC_LO(v) ((v) & 0xffff)
10148 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10149 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10151 static inline unsigned int
10152 plt_stub_size (struct ppc_link_hash_table *htab,
10153 struct ppc_stub_hash_entry *stub_entry,
10156 unsigned size = 12;
10158 if (ALWAYS_EMIT_R2SAVE
10159 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10161 if (PPC_HA (off) != 0)
10166 if (htab->params->plt_static_chain)
10168 if (htab->params->plt_thread_safe)
10170 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10173 if (stub_entry->h != NULL
10174 && (stub_entry->h == htab->tls_get_addr_fd
10175 || stub_entry->h == htab->tls_get_addr)
10176 && !htab->params->no_tls_get_addr_opt)
10181 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10182 then return the padding needed to do so. */
10183 static inline unsigned int
10184 plt_stub_pad (struct ppc_link_hash_table *htab,
10185 struct ppc_stub_hash_entry *stub_entry,
10188 int stub_align = 1 << htab->params->plt_stub_align;
10189 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10190 bfd_vma stub_off = stub_entry->stub_sec->size;
10192 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10193 > (stub_size & -stub_align))
10194 return stub_align - (stub_off & (stub_align - 1));
10198 /* Build a .plt call stub. */
10200 static inline bfd_byte *
10201 build_plt_stub (struct ppc_link_hash_table *htab,
10202 struct ppc_stub_hash_entry *stub_entry,
10203 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10205 bfd *obfd = htab->params->stub_bfd;
10206 bfd_boolean plt_load_toc = htab->opd_abi;
10207 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10208 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10209 bfd_boolean use_fake_dep = plt_thread_safe;
10210 bfd_vma cmp_branch_off = 0;
10212 if (!ALWAYS_USE_FAKE_DEP
10215 && !(stub_entry->h != NULL
10216 && (stub_entry->h == htab->tls_get_addr_fd
10217 || stub_entry->h == htab->tls_get_addr)
10218 && !htab->params->no_tls_get_addr_opt))
10220 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10221 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10222 / PLT_ENTRY_SIZE (htab));
10223 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10226 if (pltindex > 32768)
10227 glinkoff += (pltindex - 32768) * 4;
10229 + htab->glink->output_offset
10230 + htab->glink->output_section->vma);
10231 from = (p - stub_entry->stub_sec->contents
10232 + 4 * (ALWAYS_EMIT_R2SAVE
10233 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10234 + 4 * (PPC_HA (offset) != 0)
10235 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10236 != PPC_HA (offset))
10237 + 4 * (plt_static_chain != 0)
10239 + stub_entry->stub_sec->output_offset
10240 + stub_entry->stub_sec->output_section->vma);
10241 cmp_branch_off = to - from;
10242 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10245 if (PPC_HA (offset) != 0)
10249 if (ALWAYS_EMIT_R2SAVE
10250 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10251 r[0].r_offset += 4;
10252 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10253 r[1].r_offset = r[0].r_offset + 4;
10254 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10255 r[1].r_addend = r[0].r_addend;
10258 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10260 r[2].r_offset = r[1].r_offset + 4;
10261 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10262 r[2].r_addend = r[0].r_addend;
10266 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10267 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10268 r[2].r_addend = r[0].r_addend + 8;
10269 if (plt_static_chain)
10271 r[3].r_offset = r[2].r_offset + 4;
10272 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10273 r[3].r_addend = r[0].r_addend + 16;
10278 if (ALWAYS_EMIT_R2SAVE
10279 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10280 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10283 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10284 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10288 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10289 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10292 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10294 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10297 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10302 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10303 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10305 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10306 if (plt_static_chain)
10307 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10314 if (ALWAYS_EMIT_R2SAVE
10315 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10316 r[0].r_offset += 4;
10317 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10320 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10322 r[1].r_offset = r[0].r_offset + 4;
10323 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10324 r[1].r_addend = r[0].r_addend;
10328 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10329 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10330 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10331 if (plt_static_chain)
10333 r[2].r_offset = r[1].r_offset + 4;
10334 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10335 r[2].r_addend = r[0].r_addend + 8;
10340 if (ALWAYS_EMIT_R2SAVE
10341 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10342 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10343 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10345 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10347 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10350 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10355 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10356 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10358 if (plt_static_chain)
10359 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10360 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10363 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10365 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10366 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10367 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10370 bfd_put_32 (obfd, BCTR, p), p += 4;
10374 /* Build a special .plt call stub for __tls_get_addr. */
10376 #define LD_R11_0R3 0xe9630000
10377 #define LD_R12_0R3 0xe9830000
10378 #define MR_R0_R3 0x7c601b78
10379 #define CMPDI_R11_0 0x2c2b0000
10380 #define ADD_R3_R12_R13 0x7c6c6a14
10381 #define BEQLR 0x4d820020
10382 #define MR_R3_R0 0x7c030378
10383 #define STD_R11_0R1 0xf9610000
10384 #define BCTRL 0x4e800421
10385 #define LD_R11_0R1 0xe9610000
10386 #define MTLR_R11 0x7d6803a6
10388 static inline bfd_byte *
10389 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10390 struct ppc_stub_hash_entry *stub_entry,
10391 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10393 bfd *obfd = htab->params->stub_bfd;
10395 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10396 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10397 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10398 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10399 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10400 bfd_put_32 (obfd, BEQLR, p), p += 4;
10401 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10402 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10403 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10406 r[0].r_offset += 9 * 4;
10407 p = build_plt_stub (htab, stub_entry, p, offset, r);
10408 bfd_put_32 (obfd, BCTRL, p - 4);
10410 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10411 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10412 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10413 bfd_put_32 (obfd, BLR, p), p += 4;
10418 static Elf_Internal_Rela *
10419 get_relocs (asection *sec, int count)
10421 Elf_Internal_Rela *relocs;
10422 struct bfd_elf_section_data *elfsec_data;
10424 elfsec_data = elf_section_data (sec);
10425 relocs = elfsec_data->relocs;
10426 if (relocs == NULL)
10428 bfd_size_type relsize;
10429 relsize = sec->reloc_count * sizeof (*relocs);
10430 relocs = bfd_alloc (sec->owner, relsize);
10431 if (relocs == NULL)
10433 elfsec_data->relocs = relocs;
10434 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10435 sizeof (Elf_Internal_Shdr));
10436 if (elfsec_data->rela.hdr == NULL)
10438 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10439 * sizeof (Elf64_External_Rela));
10440 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10441 sec->reloc_count = 0;
10443 relocs += sec->reloc_count;
10444 sec->reloc_count += count;
10449 get_r2off (struct bfd_link_info *info,
10450 struct ppc_stub_hash_entry *stub_entry)
10452 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10453 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10457 /* Support linking -R objects. Get the toc pointer from the
10460 if (!htab->opd_abi)
10462 asection *opd = stub_entry->h->elf.root.u.def.section;
10463 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10465 if (strcmp (opd->name, ".opd") != 0
10466 || opd->reloc_count != 0)
10468 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10469 stub_entry->h->elf.root.root.string);
10470 bfd_set_error (bfd_error_bad_value);
10473 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10475 r2off = bfd_get_64 (opd->owner, buf);
10476 r2off -= elf_gp (info->output_bfd);
10478 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10483 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10485 struct ppc_stub_hash_entry *stub_entry;
10486 struct ppc_branch_hash_entry *br_entry;
10487 struct bfd_link_info *info;
10488 struct ppc_link_hash_table *htab;
10493 Elf_Internal_Rela *r;
10496 /* Massage our args to the form they really have. */
10497 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10500 htab = ppc_hash_table (info);
10504 /* Make a note of the offset within the stubs for this entry. */
10505 stub_entry->stub_offset = stub_entry->stub_sec->size;
10506 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10508 htab->stub_count[stub_entry->stub_type - 1] += 1;
10509 switch (stub_entry->stub_type)
10511 case ppc_stub_long_branch:
10512 case ppc_stub_long_branch_r2off:
10513 /* Branches are relative. This is where we are going to. */
10514 dest = (stub_entry->target_value
10515 + stub_entry->target_section->output_offset
10516 + stub_entry->target_section->output_section->vma);
10517 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10520 /* And this is where we are coming from. */
10521 off -= (stub_entry->stub_offset
10522 + stub_entry->stub_sec->output_offset
10523 + stub_entry->stub_sec->output_section->vma);
10526 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10528 bfd_vma r2off = get_r2off (info, stub_entry);
10532 htab->stub_error = TRUE;
10535 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10538 if (PPC_HA (r2off) != 0)
10541 bfd_put_32 (htab->params->stub_bfd,
10542 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10545 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10549 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10551 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10553 info->callbacks->einfo
10554 (_("%P: long branch stub `%s' offset overflow\n"),
10555 stub_entry->root.string);
10556 htab->stub_error = TRUE;
10560 if (info->emitrelocations)
10562 r = get_relocs (stub_entry->stub_sec, 1);
10565 r->r_offset = loc - stub_entry->stub_sec->contents;
10566 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10567 r->r_addend = dest;
10568 if (stub_entry->h != NULL)
10570 struct elf_link_hash_entry **hashes;
10571 unsigned long symndx;
10572 struct ppc_link_hash_entry *h;
10574 hashes = elf_sym_hashes (htab->params->stub_bfd);
10575 if (hashes == NULL)
10577 bfd_size_type hsize;
10579 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10580 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10581 if (hashes == NULL)
10583 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10584 htab->stub_globals = 1;
10586 symndx = htab->stub_globals++;
10588 hashes[symndx] = &h->elf;
10589 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10590 if (h->oh != NULL && h->oh->is_func)
10591 h = ppc_follow_link (h->oh);
10592 if (h->elf.root.u.def.section != stub_entry->target_section)
10593 /* H is an opd symbol. The addend must be zero. */
10597 off = (h->elf.root.u.def.value
10598 + h->elf.root.u.def.section->output_offset
10599 + h->elf.root.u.def.section->output_section->vma);
10600 r->r_addend -= off;
10606 case ppc_stub_plt_branch:
10607 case ppc_stub_plt_branch_r2off:
10608 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10609 stub_entry->root.string + 9,
10611 if (br_entry == NULL)
10613 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10614 stub_entry->root.string);
10615 htab->stub_error = TRUE;
10619 dest = (stub_entry->target_value
10620 + stub_entry->target_section->output_offset
10621 + stub_entry->target_section->output_section->vma);
10622 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10623 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10625 bfd_put_64 (htab->brlt->owner, dest,
10626 htab->brlt->contents + br_entry->offset);
10628 if (br_entry->iter == htab->stub_iteration)
10630 br_entry->iter = 0;
10632 if (htab->relbrlt != NULL)
10634 /* Create a reloc for the branch lookup table entry. */
10635 Elf_Internal_Rela rela;
10638 rela.r_offset = (br_entry->offset
10639 + htab->brlt->output_offset
10640 + htab->brlt->output_section->vma);
10641 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10642 rela.r_addend = dest;
10644 rl = htab->relbrlt->contents;
10645 rl += (htab->relbrlt->reloc_count++
10646 * sizeof (Elf64_External_Rela));
10647 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10649 else if (info->emitrelocations)
10651 r = get_relocs (htab->brlt, 1);
10654 /* brlt, being SEC_LINKER_CREATED does not go through the
10655 normal reloc processing. Symbols and offsets are not
10656 translated from input file to output file form, so
10657 set up the offset per the output file. */
10658 r->r_offset = (br_entry->offset
10659 + htab->brlt->output_offset
10660 + htab->brlt->output_section->vma);
10661 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10662 r->r_addend = dest;
10666 dest = (br_entry->offset
10667 + htab->brlt->output_offset
10668 + htab->brlt->output_section->vma);
10671 - elf_gp (htab->brlt->output_section->owner)
10672 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10674 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10676 info->callbacks->einfo
10677 (_("%P: linkage table error against `%T'\n"),
10678 stub_entry->root.string);
10679 bfd_set_error (bfd_error_bad_value);
10680 htab->stub_error = TRUE;
10684 if (info->emitrelocations)
10686 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10689 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10690 if (bfd_big_endian (info->output_bfd))
10691 r[0].r_offset += 2;
10692 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10693 r[0].r_offset += 4;
10694 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10695 r[0].r_addend = dest;
10696 if (PPC_HA (off) != 0)
10698 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10699 r[1].r_offset = r[0].r_offset + 4;
10700 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10701 r[1].r_addend = r[0].r_addend;
10705 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10707 if (PPC_HA (off) != 0)
10710 bfd_put_32 (htab->params->stub_bfd,
10711 ADDIS_R12_R2 | PPC_HA (off), loc);
10713 bfd_put_32 (htab->params->stub_bfd,
10714 LD_R12_0R12 | PPC_LO (off), loc);
10719 bfd_put_32 (htab->params->stub_bfd,
10720 LD_R12_0R2 | PPC_LO (off), loc);
10725 bfd_vma r2off = get_r2off (info, stub_entry);
10727 if (r2off == 0 && htab->opd_abi)
10729 htab->stub_error = TRUE;
10733 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10736 if (PPC_HA (off) != 0)
10739 bfd_put_32 (htab->params->stub_bfd,
10740 ADDIS_R12_R2 | PPC_HA (off), loc);
10742 bfd_put_32 (htab->params->stub_bfd,
10743 LD_R12_0R12 | PPC_LO (off), loc);
10746 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10748 if (PPC_HA (r2off) != 0)
10752 bfd_put_32 (htab->params->stub_bfd,
10753 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10755 if (PPC_LO (r2off) != 0)
10759 bfd_put_32 (htab->params->stub_bfd,
10760 ADDI_R2_R2 | PPC_LO (r2off), loc);
10764 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10766 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10769 case ppc_stub_plt_call:
10770 case ppc_stub_plt_call_r2save:
10771 if (stub_entry->h != NULL
10772 && stub_entry->h->is_func_descriptor
10773 && stub_entry->h->oh != NULL)
10775 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10777 /* If the old-ABI "dot-symbol" is undefined make it weak so
10778 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10779 FIXME: We used to define the symbol on one of the call
10780 stubs instead, which is why we test symbol section id
10781 against htab->top_id in various places. Likely all
10782 these checks could now disappear. */
10783 if (fh->elf.root.type == bfd_link_hash_undefined)
10784 fh->elf.root.type = bfd_link_hash_undefweak;
10785 /* Stop undo_symbol_twiddle changing it back to undefined. */
10786 fh->was_undefined = 0;
10789 /* Now build the stub. */
10790 dest = stub_entry->plt_ent->plt.offset & ~1;
10791 if (dest >= (bfd_vma) -2)
10794 plt = htab->elf.splt;
10795 if (!htab->elf.dynamic_sections_created
10796 || stub_entry->h == NULL
10797 || stub_entry->h->elf.dynindx == -1)
10798 plt = htab->elf.iplt;
10800 dest += plt->output_offset + plt->output_section->vma;
10802 if (stub_entry->h == NULL
10803 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10805 Elf_Internal_Rela rela;
10808 rela.r_offset = dest;
10810 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10812 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10813 rela.r_addend = (stub_entry->target_value
10814 + stub_entry->target_section->output_offset
10815 + stub_entry->target_section->output_section->vma);
10817 rl = (htab->elf.irelplt->contents
10818 + (htab->elf.irelplt->reloc_count++
10819 * sizeof (Elf64_External_Rela)));
10820 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10821 stub_entry->plt_ent->plt.offset |= 1;
10825 - elf_gp (plt->output_section->owner)
10826 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10828 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10830 info->callbacks->einfo
10831 (_("%P: linkage table error against `%T'\n"),
10832 stub_entry->h != NULL
10833 ? stub_entry->h->elf.root.root.string
10835 bfd_set_error (bfd_error_bad_value);
10836 htab->stub_error = TRUE;
10840 if (htab->params->plt_stub_align != 0)
10842 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10844 stub_entry->stub_sec->size += pad;
10845 stub_entry->stub_offset = stub_entry->stub_sec->size;
10850 if (info->emitrelocations)
10852 r = get_relocs (stub_entry->stub_sec,
10853 ((PPC_HA (off) != 0)
10855 ? 2 + (htab->params->plt_static_chain
10856 && PPC_HA (off + 16) == PPC_HA (off))
10860 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10861 if (bfd_big_endian (info->output_bfd))
10862 r[0].r_offset += 2;
10863 r[0].r_addend = dest;
10865 if (stub_entry->h != NULL
10866 && (stub_entry->h == htab->tls_get_addr_fd
10867 || stub_entry->h == htab->tls_get_addr)
10868 && !htab->params->no_tls_get_addr_opt)
10869 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10871 p = build_plt_stub (htab, stub_entry, loc, off, r);
10880 stub_entry->stub_sec->size += size;
10882 if (htab->params->emit_stub_syms)
10884 struct elf_link_hash_entry *h;
10887 const char *const stub_str[] = { "long_branch",
10888 "long_branch_r2off",
10890 "plt_branch_r2off",
10894 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10895 len2 = strlen (stub_entry->root.string);
10896 name = bfd_malloc (len1 + len2 + 2);
10899 memcpy (name, stub_entry->root.string, 9);
10900 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10901 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10902 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10905 if (h->root.type == bfd_link_hash_new)
10907 h->root.type = bfd_link_hash_defined;
10908 h->root.u.def.section = stub_entry->stub_sec;
10909 h->root.u.def.value = stub_entry->stub_offset;
10910 h->ref_regular = 1;
10911 h->def_regular = 1;
10912 h->ref_regular_nonweak = 1;
10913 h->forced_local = 1;
10921 /* As above, but don't actually build the stub. Just bump offset so
10922 we know stub section sizes, and select plt_branch stubs where
10923 long_branch stubs won't do. */
10926 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10928 struct ppc_stub_hash_entry *stub_entry;
10929 struct bfd_link_info *info;
10930 struct ppc_link_hash_table *htab;
10934 /* Massage our args to the form they really have. */
10935 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10938 htab = ppc_hash_table (info);
10942 if (stub_entry->stub_type == ppc_stub_plt_call
10943 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10946 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10947 if (off >= (bfd_vma) -2)
10949 plt = htab->elf.splt;
10950 if (!htab->elf.dynamic_sections_created
10951 || stub_entry->h == NULL
10952 || stub_entry->h->elf.dynindx == -1)
10953 plt = htab->elf.iplt;
10954 off += (plt->output_offset
10955 + plt->output_section->vma
10956 - elf_gp (plt->output_section->owner)
10957 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10959 size = plt_stub_size (htab, stub_entry, off);
10960 if (htab->params->plt_stub_align)
10961 size += plt_stub_pad (htab, stub_entry, off);
10962 if (info->emitrelocations)
10964 stub_entry->stub_sec->reloc_count
10965 += ((PPC_HA (off) != 0)
10967 ? 2 + (htab->params->plt_static_chain
10968 && PPC_HA (off + 16) == PPC_HA (off))
10970 stub_entry->stub_sec->flags |= SEC_RELOC;
10975 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10978 bfd_vma local_off = 0;
10980 off = (stub_entry->target_value
10981 + stub_entry->target_section->output_offset
10982 + stub_entry->target_section->output_section->vma);
10983 off -= (stub_entry->stub_sec->size
10984 + stub_entry->stub_sec->output_offset
10985 + stub_entry->stub_sec->output_section->vma);
10987 /* Reset the stub type from the plt variant in case we now
10988 can reach with a shorter stub. */
10989 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10990 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10993 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10995 r2off = get_r2off (info, stub_entry);
10996 if (r2off == 0 && htab->opd_abi)
10998 htab->stub_error = TRUE;
11002 if (PPC_HA (r2off) != 0)
11007 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11009 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11010 Do the same for -R objects without function descriptors. */
11011 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11012 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11015 struct ppc_branch_hash_entry *br_entry;
11017 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11018 stub_entry->root.string + 9,
11020 if (br_entry == NULL)
11022 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11023 stub_entry->root.string);
11024 htab->stub_error = TRUE;
11028 if (br_entry->iter != htab->stub_iteration)
11030 br_entry->iter = htab->stub_iteration;
11031 br_entry->offset = htab->brlt->size;
11032 htab->brlt->size += 8;
11034 if (htab->relbrlt != NULL)
11035 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11036 else if (info->emitrelocations)
11038 htab->brlt->reloc_count += 1;
11039 htab->brlt->flags |= SEC_RELOC;
11043 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11044 off = (br_entry->offset
11045 + htab->brlt->output_offset
11046 + htab->brlt->output_section->vma
11047 - elf_gp (htab->brlt->output_section->owner)
11048 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11050 if (info->emitrelocations)
11052 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11053 stub_entry->stub_sec->flags |= SEC_RELOC;
11056 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11059 if (PPC_HA (off) != 0)
11065 if (PPC_HA (off) != 0)
11068 if (PPC_HA (r2off) != 0)
11070 if (PPC_LO (r2off) != 0)
11074 else if (info->emitrelocations)
11076 stub_entry->stub_sec->reloc_count += 1;
11077 stub_entry->stub_sec->flags |= SEC_RELOC;
11081 stub_entry->stub_sec->size += size;
11085 /* Set up various things so that we can make a list of input sections
11086 for each output section included in the link. Returns -1 on error,
11087 0 when no stubs will be needed, and 1 on success. */
11090 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11093 int top_id, top_index, id;
11095 asection **input_list;
11097 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11102 /* Find the top input section id. */
11103 for (input_bfd = info->input_bfds, top_id = 3;
11105 input_bfd = input_bfd->link.next)
11107 for (section = input_bfd->sections;
11109 section = section->next)
11111 if (top_id < section->id)
11112 top_id = section->id;
11116 htab->top_id = top_id;
11117 amt = sizeof (struct map_stub) * (top_id + 1);
11118 htab->stub_group = bfd_zmalloc (amt);
11119 if (htab->stub_group == NULL)
11122 /* Set toc_off for com, und, abs and ind sections. */
11123 for (id = 0; id < 3; id++)
11124 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11126 /* We can't use output_bfd->section_count here to find the top output
11127 section index as some sections may have been removed, and
11128 strip_excluded_output_sections doesn't renumber the indices. */
11129 for (section = info->output_bfd->sections, top_index = 0;
11131 section = section->next)
11133 if (top_index < section->index)
11134 top_index = section->index;
11137 htab->top_index = top_index;
11138 amt = sizeof (asection *) * (top_index + 1);
11139 input_list = bfd_zmalloc (amt);
11140 htab->input_list = input_list;
11141 if (input_list == NULL)
11147 /* Set up for first pass at multitoc partitioning. */
11150 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11152 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11154 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11155 htab->toc_bfd = NULL;
11156 htab->toc_first_sec = NULL;
11159 /* The linker repeatedly calls this function for each TOC input section
11160 and linker generated GOT section. Group input bfds such that the toc
11161 within a group is less than 64k in size. */
11164 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11166 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11167 bfd_vma addr, off, limit;
11172 if (!htab->second_toc_pass)
11174 /* Keep track of the first .toc or .got section for this input bfd. */
11175 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11179 htab->toc_bfd = isec->owner;
11180 htab->toc_first_sec = isec;
11183 addr = isec->output_offset + isec->output_section->vma;
11184 off = addr - htab->toc_curr;
11185 limit = 0x80008000;
11186 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11188 if (off + isec->size > limit)
11190 addr = (htab->toc_first_sec->output_offset
11191 + htab->toc_first_sec->output_section->vma);
11192 htab->toc_curr = addr;
11195 /* toc_curr is the base address of this toc group. Set elf_gp
11196 for the input section to be the offset relative to the
11197 output toc base plus 0x8000. Making the input elf_gp an
11198 offset allows us to move the toc as a whole without
11199 recalculating input elf_gp. */
11200 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11201 off += TOC_BASE_OFF;
11203 /* Die if someone uses a linker script that doesn't keep input
11204 file .toc and .got together. */
11206 && elf_gp (isec->owner) != 0
11207 && elf_gp (isec->owner) != off)
11210 elf_gp (isec->owner) = off;
11214 /* During the second pass toc_first_sec points to the start of
11215 a toc group, and toc_curr is used to track the old elf_gp.
11216 We use toc_bfd to ensure we only look at each bfd once. */
11217 if (htab->toc_bfd == isec->owner)
11219 htab->toc_bfd = isec->owner;
11221 if (htab->toc_first_sec == NULL
11222 || htab->toc_curr != elf_gp (isec->owner))
11224 htab->toc_curr = elf_gp (isec->owner);
11225 htab->toc_first_sec = isec;
11227 addr = (htab->toc_first_sec->output_offset
11228 + htab->toc_first_sec->output_section->vma);
11229 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11230 elf_gp (isec->owner) = off;
11235 /* Called via elf_link_hash_traverse to merge GOT entries for global
11239 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11241 if (h->root.type == bfd_link_hash_indirect)
11244 merge_got_entries (&h->got.glist);
11249 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11253 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11255 struct got_entry *gent;
11257 if (h->root.type == bfd_link_hash_indirect)
11260 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11261 if (!gent->is_indirect)
11262 allocate_got (h, (struct bfd_link_info *) inf, gent);
11266 /* Called on the first multitoc pass after the last call to
11267 ppc64_elf_next_toc_section. This function removes duplicate GOT
11271 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11273 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11274 struct bfd *ibfd, *ibfd2;
11275 bfd_boolean done_something;
11277 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11279 if (!htab->do_multi_toc)
11282 /* Merge global sym got entries within a toc group. */
11283 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11285 /* And tlsld_got. */
11286 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11288 struct got_entry *ent, *ent2;
11290 if (!is_ppc64_elf (ibfd))
11293 ent = ppc64_tlsld_got (ibfd);
11294 if (!ent->is_indirect
11295 && ent->got.offset != (bfd_vma) -1)
11297 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11299 if (!is_ppc64_elf (ibfd2))
11302 ent2 = ppc64_tlsld_got (ibfd2);
11303 if (!ent2->is_indirect
11304 && ent2->got.offset != (bfd_vma) -1
11305 && elf_gp (ibfd2) == elf_gp (ibfd))
11307 ent2->is_indirect = TRUE;
11308 ent2->got.ent = ent;
11314 /* Zap sizes of got sections. */
11315 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11316 htab->elf.irelplt->size -= htab->got_reli_size;
11317 htab->got_reli_size = 0;
11319 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11321 asection *got, *relgot;
11323 if (!is_ppc64_elf (ibfd))
11326 got = ppc64_elf_tdata (ibfd)->got;
11329 got->rawsize = got->size;
11331 relgot = ppc64_elf_tdata (ibfd)->relgot;
11332 relgot->rawsize = relgot->size;
11337 /* Now reallocate the got, local syms first. We don't need to
11338 allocate section contents again since we never increase size. */
11339 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11341 struct got_entry **lgot_ents;
11342 struct got_entry **end_lgot_ents;
11343 struct plt_entry **local_plt;
11344 struct plt_entry **end_local_plt;
11345 unsigned char *lgot_masks;
11346 bfd_size_type locsymcount;
11347 Elf_Internal_Shdr *symtab_hdr;
11350 if (!is_ppc64_elf (ibfd))
11353 lgot_ents = elf_local_got_ents (ibfd);
11357 symtab_hdr = &elf_symtab_hdr (ibfd);
11358 locsymcount = symtab_hdr->sh_info;
11359 end_lgot_ents = lgot_ents + locsymcount;
11360 local_plt = (struct plt_entry **) end_lgot_ents;
11361 end_local_plt = local_plt + locsymcount;
11362 lgot_masks = (unsigned char *) end_local_plt;
11363 s = ppc64_elf_tdata (ibfd)->got;
11364 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11366 struct got_entry *ent;
11368 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11370 unsigned int ent_size = 8;
11371 unsigned int rel_size = sizeof (Elf64_External_Rela);
11373 ent->got.offset = s->size;
11374 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11379 s->size += ent_size;
11380 if ((*lgot_masks & PLT_IFUNC) != 0)
11382 htab->elf.irelplt->size += rel_size;
11383 htab->got_reli_size += rel_size;
11385 else if (info->shared)
11387 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11388 srel->size += rel_size;
11394 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11396 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11398 struct got_entry *ent;
11400 if (!is_ppc64_elf (ibfd))
11403 ent = ppc64_tlsld_got (ibfd);
11404 if (!ent->is_indirect
11405 && ent->got.offset != (bfd_vma) -1)
11407 asection *s = ppc64_elf_tdata (ibfd)->got;
11408 ent->got.offset = s->size;
11412 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11413 srel->size += sizeof (Elf64_External_Rela);
11418 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11419 if (!done_something)
11420 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11424 if (!is_ppc64_elf (ibfd))
11427 got = ppc64_elf_tdata (ibfd)->got;
11430 done_something = got->rawsize != got->size;
11431 if (done_something)
11436 if (done_something)
11437 (*htab->params->layout_sections_again) ();
11439 /* Set up for second pass over toc sections to recalculate elf_gp
11440 on input sections. */
11441 htab->toc_bfd = NULL;
11442 htab->toc_first_sec = NULL;
11443 htab->second_toc_pass = TRUE;
11444 return done_something;
11447 /* Called after second pass of multitoc partitioning. */
11450 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11452 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11454 /* After the second pass, toc_curr tracks the TOC offset used
11455 for code sections below in ppc64_elf_next_input_section. */
11456 htab->toc_curr = TOC_BASE_OFF;
11459 /* No toc references were found in ISEC. If the code in ISEC makes no
11460 calls, then there's no need to use toc adjusting stubs when branching
11461 into ISEC. Actually, indirect calls from ISEC are OK as they will
11462 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11463 needed, and 2 if a cyclical call-graph was found but no other reason
11464 for a stub was detected. If called from the top level, a return of
11465 2 means the same as a return of 0. */
11468 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11472 /* Mark this section as checked. */
11473 isec->call_check_done = 1;
11475 /* We know none of our code bearing sections will need toc stubs. */
11476 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11479 if (isec->size == 0)
11482 if (isec->output_section == NULL)
11486 if (isec->reloc_count != 0)
11488 Elf_Internal_Rela *relstart, *rel;
11489 Elf_Internal_Sym *local_syms;
11490 struct ppc_link_hash_table *htab;
11492 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11493 info->keep_memory);
11494 if (relstart == NULL)
11497 /* Look for branches to outside of this section. */
11499 htab = ppc_hash_table (info);
11503 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11505 enum elf_ppc64_reloc_type r_type;
11506 unsigned long r_symndx;
11507 struct elf_link_hash_entry *h;
11508 struct ppc_link_hash_entry *eh;
11509 Elf_Internal_Sym *sym;
11511 struct _opd_sec_data *opd;
11515 r_type = ELF64_R_TYPE (rel->r_info);
11516 if (r_type != R_PPC64_REL24
11517 && r_type != R_PPC64_REL14
11518 && r_type != R_PPC64_REL14_BRTAKEN
11519 && r_type != R_PPC64_REL14_BRNTAKEN)
11522 r_symndx = ELF64_R_SYM (rel->r_info);
11523 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11530 /* Calls to dynamic lib functions go through a plt call stub
11532 eh = (struct ppc_link_hash_entry *) h;
11534 && (eh->elf.plt.plist != NULL
11536 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11542 if (sym_sec == NULL)
11543 /* Ignore other undefined symbols. */
11546 /* Assume branches to other sections not included in the
11547 link need stubs too, to cover -R and absolute syms. */
11548 if (sym_sec->output_section == NULL)
11555 sym_value = sym->st_value;
11558 if (h->root.type != bfd_link_hash_defined
11559 && h->root.type != bfd_link_hash_defweak)
11561 sym_value = h->root.u.def.value;
11563 sym_value += rel->r_addend;
11565 /* If this branch reloc uses an opd sym, find the code section. */
11566 opd = get_opd_info (sym_sec);
11569 if (h == NULL && opd->adjust != NULL)
11573 adjust = opd->adjust[sym->st_value / 8];
11575 /* Assume deleted functions won't ever be called. */
11577 sym_value += adjust;
11580 dest = opd_entry_value (sym_sec, sym_value,
11581 &sym_sec, NULL, FALSE);
11582 if (dest == (bfd_vma) -1)
11587 + sym_sec->output_offset
11588 + sym_sec->output_section->vma);
11590 /* Ignore branch to self. */
11591 if (sym_sec == isec)
11594 /* If the called function uses the toc, we need a stub. */
11595 if (sym_sec->has_toc_reloc
11596 || sym_sec->makes_toc_func_call)
11602 /* Assume any branch that needs a long branch stub might in fact
11603 need a plt_branch stub. A plt_branch stub uses r2. */
11604 else if (dest - (isec->output_offset
11605 + isec->output_section->vma
11606 + rel->r_offset) + (1 << 25)
11607 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11615 /* If calling back to a section in the process of being
11616 tested, we can't say for sure that no toc adjusting stubs
11617 are needed, so don't return zero. */
11618 else if (sym_sec->call_check_in_progress)
11621 /* Branches to another section that itself doesn't have any TOC
11622 references are OK. Recursively call ourselves to check. */
11623 else if (!sym_sec->call_check_done)
11627 /* Mark current section as indeterminate, so that other
11628 sections that call back to current won't be marked as
11630 isec->call_check_in_progress = 1;
11631 recur = toc_adjusting_stub_needed (info, sym_sec);
11632 isec->call_check_in_progress = 0;
11643 if (local_syms != NULL
11644 && (elf_symtab_hdr (isec->owner).contents
11645 != (unsigned char *) local_syms))
11647 if (elf_section_data (isec)->relocs != relstart)
11652 && isec->map_head.s != NULL
11653 && (strcmp (isec->output_section->name, ".init") == 0
11654 || strcmp (isec->output_section->name, ".fini") == 0))
11656 if (isec->map_head.s->has_toc_reloc
11657 || isec->map_head.s->makes_toc_func_call)
11659 else if (!isec->map_head.s->call_check_done)
11662 isec->call_check_in_progress = 1;
11663 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11664 isec->call_check_in_progress = 0;
11671 isec->makes_toc_func_call = 1;
11676 /* The linker repeatedly calls this function for each input section,
11677 in the order that input sections are linked into output sections.
11678 Build lists of input sections to determine groupings between which
11679 we may insert linker stubs. */
11682 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11684 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11689 if ((isec->output_section->flags & SEC_CODE) != 0
11690 && isec->output_section->index <= htab->top_index)
11692 asection **list = htab->input_list + isec->output_section->index;
11693 /* Steal the link_sec pointer for our list. */
11694 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11695 /* This happens to make the list in reverse order,
11696 which is what we want. */
11697 PREV_SEC (isec) = *list;
11701 if (htab->multi_toc_needed)
11703 /* Analyse sections that aren't already flagged as needing a
11704 valid toc pointer. Exclude .fixup for the linux kernel.
11705 .fixup contains branches, but only back to the function that
11706 hit an exception. */
11707 if (!(isec->has_toc_reloc
11708 || (isec->flags & SEC_CODE) == 0
11709 || strcmp (isec->name, ".fixup") == 0
11710 || isec->call_check_done))
11712 if (toc_adjusting_stub_needed (info, isec) < 0)
11715 /* Make all sections use the TOC assigned for this object file.
11716 This will be wrong for pasted sections; We fix that in
11717 check_pasted_section(). */
11718 if (elf_gp (isec->owner) != 0)
11719 htab->toc_curr = elf_gp (isec->owner);
11722 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11726 /* Check that all .init and .fini sections use the same toc, if they
11727 have toc relocs. */
11730 check_pasted_section (struct bfd_link_info *info, const char *name)
11732 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11736 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11737 bfd_vma toc_off = 0;
11740 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11741 if (i->has_toc_reloc)
11744 toc_off = htab->stub_group[i->id].toc_off;
11745 else if (toc_off != htab->stub_group[i->id].toc_off)
11750 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11751 if (i->makes_toc_func_call)
11753 toc_off = htab->stub_group[i->id].toc_off;
11757 /* Make sure the whole pasted function uses the same toc offset. */
11759 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11760 htab->stub_group[i->id].toc_off = toc_off;
11766 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11768 return (check_pasted_section (info, ".init")
11769 & check_pasted_section (info, ".fini"));
11772 /* See whether we can group stub sections together. Grouping stub
11773 sections may result in fewer stubs. More importantly, we need to
11774 put all .init* and .fini* stubs at the beginning of the .init or
11775 .fini output sections respectively, because glibc splits the
11776 _init and _fini functions into multiple parts. Putting a stub in
11777 the middle of a function is not a good idea. */
11780 group_sections (struct ppc_link_hash_table *htab,
11781 bfd_size_type stub_group_size,
11782 bfd_boolean stubs_always_before_branch)
11785 bfd_size_type stub14_group_size;
11786 bfd_boolean suppress_size_errors;
11788 suppress_size_errors = FALSE;
11789 stub14_group_size = stub_group_size;
11790 if (stub_group_size == 1)
11792 /* Default values. */
11793 if (stubs_always_before_branch)
11795 stub_group_size = 0x1e00000;
11796 stub14_group_size = 0x7800;
11800 stub_group_size = 0x1c00000;
11801 stub14_group_size = 0x7000;
11803 suppress_size_errors = TRUE;
11806 list = htab->input_list + htab->top_index;
11809 asection *tail = *list;
11810 while (tail != NULL)
11814 bfd_size_type total;
11815 bfd_boolean big_sec;
11819 total = tail->size;
11820 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11821 && ppc64_elf_section_data (tail)->has_14bit_branch
11822 ? stub14_group_size : stub_group_size);
11823 if (big_sec && !suppress_size_errors)
11824 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11825 tail->owner, tail);
11826 curr_toc = htab->stub_group[tail->id].toc_off;
11828 while ((prev = PREV_SEC (curr)) != NULL
11829 && ((total += curr->output_offset - prev->output_offset)
11830 < (ppc64_elf_section_data (prev) != NULL
11831 && ppc64_elf_section_data (prev)->has_14bit_branch
11832 ? stub14_group_size : stub_group_size))
11833 && htab->stub_group[prev->id].toc_off == curr_toc)
11836 /* OK, the size from the start of CURR to the end is less
11837 than stub_group_size and thus can be handled by one stub
11838 section. (or the tail section is itself larger than
11839 stub_group_size, in which case we may be toast.) We
11840 should really be keeping track of the total size of stubs
11841 added here, as stubs contribute to the final output
11842 section size. That's a little tricky, and this way will
11843 only break if stubs added make the total size more than
11844 2^25, ie. for the default stub_group_size, if stubs total
11845 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11848 prev = PREV_SEC (tail);
11849 /* Set up this stub group. */
11850 htab->stub_group[tail->id].link_sec = curr;
11852 while (tail != curr && (tail = prev) != NULL);
11854 /* But wait, there's more! Input sections up to stub_group_size
11855 bytes before the stub section can be handled by it too.
11856 Don't do this if we have a really large section after the
11857 stubs, as adding more stubs increases the chance that
11858 branches may not reach into the stub section. */
11859 if (!stubs_always_before_branch && !big_sec)
11862 while (prev != NULL
11863 && ((total += tail->output_offset - prev->output_offset)
11864 < (ppc64_elf_section_data (prev) != NULL
11865 && ppc64_elf_section_data (prev)->has_14bit_branch
11866 ? stub14_group_size : stub_group_size))
11867 && htab->stub_group[prev->id].toc_off == curr_toc)
11870 prev = PREV_SEC (tail);
11871 htab->stub_group[tail->id].link_sec = curr;
11877 while (list-- != htab->input_list);
11878 free (htab->input_list);
11882 static const unsigned char glink_eh_frame_cie[] =
11884 0, 0, 0, 16, /* length. */
11885 0, 0, 0, 0, /* id. */
11886 1, /* CIE version. */
11887 'z', 'R', 0, /* Augmentation string. */
11888 4, /* Code alignment. */
11889 0x78, /* Data alignment. */
11891 1, /* Augmentation size. */
11892 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11893 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11897 /* Stripping output sections is normally done before dynamic section
11898 symbols have been allocated. This function is called later, and
11899 handles cases like htab->brlt which is mapped to its own output
11903 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11905 if (isec->size == 0
11906 && isec->output_section->size == 0
11907 && !(isec->output_section->flags & SEC_KEEP)
11908 && !bfd_section_removed_from_list (info->output_bfd,
11909 isec->output_section)
11910 && elf_section_data (isec->output_section)->dynindx == 0)
11912 isec->output_section->flags |= SEC_EXCLUDE;
11913 bfd_section_list_remove (info->output_bfd, isec->output_section);
11914 info->output_bfd->section_count--;
11918 /* Determine and set the size of the stub section for a final link.
11920 The basic idea here is to examine all the relocations looking for
11921 PC-relative calls to a target that is unreachable with a "bl"
11925 ppc64_elf_size_stubs (struct bfd_link_info *info)
11927 bfd_size_type stub_group_size;
11928 bfd_boolean stubs_always_before_branch;
11929 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11934 if (htab->params->plt_thread_safe == -1 && !info->executable)
11935 htab->params->plt_thread_safe = 1;
11936 if (!htab->opd_abi)
11937 htab->params->plt_thread_safe = 0;
11938 else if (htab->params->plt_thread_safe == -1)
11940 static const char *const thread_starter[] =
11944 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11946 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11947 "mq_notify", "create_timer",
11951 "GOMP_parallel_start",
11952 "GOMP_parallel_loop_static_start",
11953 "GOMP_parallel_loop_dynamic_start",
11954 "GOMP_parallel_loop_guided_start",
11955 "GOMP_parallel_loop_runtime_start",
11956 "GOMP_parallel_sections_start",
11960 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11962 struct elf_link_hash_entry *h;
11963 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11964 FALSE, FALSE, TRUE);
11965 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11966 if (htab->params->plt_thread_safe)
11970 stubs_always_before_branch = htab->params->group_size < 0;
11971 if (htab->params->group_size < 0)
11972 stub_group_size = -htab->params->group_size;
11974 stub_group_size = htab->params->group_size;
11976 group_sections (htab, stub_group_size, stubs_always_before_branch);
11981 unsigned int bfd_indx;
11982 asection *stub_sec;
11984 htab->stub_iteration += 1;
11986 for (input_bfd = info->input_bfds, bfd_indx = 0;
11988 input_bfd = input_bfd->link.next, bfd_indx++)
11990 Elf_Internal_Shdr *symtab_hdr;
11992 Elf_Internal_Sym *local_syms = NULL;
11994 if (!is_ppc64_elf (input_bfd))
11997 /* We'll need the symbol table in a second. */
11998 symtab_hdr = &elf_symtab_hdr (input_bfd);
11999 if (symtab_hdr->sh_info == 0)
12002 /* Walk over each section attached to the input bfd. */
12003 for (section = input_bfd->sections;
12005 section = section->next)
12007 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12009 /* If there aren't any relocs, then there's nothing more
12011 if ((section->flags & SEC_RELOC) == 0
12012 || (section->flags & SEC_ALLOC) == 0
12013 || (section->flags & SEC_LOAD) == 0
12014 || (section->flags & SEC_CODE) == 0
12015 || section->reloc_count == 0)
12018 /* If this section is a link-once section that will be
12019 discarded, then don't create any stubs. */
12020 if (section->output_section == NULL
12021 || section->output_section->owner != info->output_bfd)
12024 /* Get the relocs. */
12026 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12027 info->keep_memory);
12028 if (internal_relocs == NULL)
12029 goto error_ret_free_local;
12031 /* Now examine each relocation. */
12032 irela = internal_relocs;
12033 irelaend = irela + section->reloc_count;
12034 for (; irela < irelaend; irela++)
12036 enum elf_ppc64_reloc_type r_type;
12037 unsigned int r_indx;
12038 enum ppc_stub_type stub_type;
12039 struct ppc_stub_hash_entry *stub_entry;
12040 asection *sym_sec, *code_sec;
12041 bfd_vma sym_value, code_value;
12042 bfd_vma destination;
12043 unsigned long local_off;
12044 bfd_boolean ok_dest;
12045 struct ppc_link_hash_entry *hash;
12046 struct ppc_link_hash_entry *fdh;
12047 struct elf_link_hash_entry *h;
12048 Elf_Internal_Sym *sym;
12050 const asection *id_sec;
12051 struct _opd_sec_data *opd;
12052 struct plt_entry *plt_ent;
12054 r_type = ELF64_R_TYPE (irela->r_info);
12055 r_indx = ELF64_R_SYM (irela->r_info);
12057 if (r_type >= R_PPC64_max)
12059 bfd_set_error (bfd_error_bad_value);
12060 goto error_ret_free_internal;
12063 /* Only look for stubs on branch instructions. */
12064 if (r_type != R_PPC64_REL24
12065 && r_type != R_PPC64_REL14
12066 && r_type != R_PPC64_REL14_BRTAKEN
12067 && r_type != R_PPC64_REL14_BRNTAKEN)
12070 /* Now determine the call target, its name, value,
12072 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12073 r_indx, input_bfd))
12074 goto error_ret_free_internal;
12075 hash = (struct ppc_link_hash_entry *) h;
12082 sym_value = sym->st_value;
12085 else if (hash->elf.root.type == bfd_link_hash_defined
12086 || hash->elf.root.type == bfd_link_hash_defweak)
12088 sym_value = hash->elf.root.u.def.value;
12089 if (sym_sec->output_section != NULL)
12092 else if (hash->elf.root.type == bfd_link_hash_undefweak
12093 || hash->elf.root.type == bfd_link_hash_undefined)
12095 /* Recognise an old ABI func code entry sym, and
12096 use the func descriptor sym instead if it is
12098 if (hash->elf.root.root.string[0] == '.'
12099 && (fdh = lookup_fdh (hash, htab)) != NULL)
12101 if (fdh->elf.root.type == bfd_link_hash_defined
12102 || fdh->elf.root.type == bfd_link_hash_defweak)
12104 sym_sec = fdh->elf.root.u.def.section;
12105 sym_value = fdh->elf.root.u.def.value;
12106 if (sym_sec->output_section != NULL)
12115 bfd_set_error (bfd_error_bad_value);
12116 goto error_ret_free_internal;
12123 sym_value += irela->r_addend;
12124 destination = (sym_value
12125 + sym_sec->output_offset
12126 + sym_sec->output_section->vma);
12127 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12132 code_sec = sym_sec;
12133 code_value = sym_value;
12134 opd = get_opd_info (sym_sec);
12139 if (hash == NULL && opd->adjust != NULL)
12141 long adjust = opd->adjust[sym_value / 8];
12144 code_value += adjust;
12145 sym_value += adjust;
12147 dest = opd_entry_value (sym_sec, sym_value,
12148 &code_sec, &code_value, FALSE);
12149 if (dest != (bfd_vma) -1)
12151 destination = dest;
12154 /* Fixup old ABI sym to point at code
12156 hash->elf.root.type = bfd_link_hash_defweak;
12157 hash->elf.root.u.def.section = code_sec;
12158 hash->elf.root.u.def.value = code_value;
12163 /* Determine what (if any) linker stub is needed. */
12165 stub_type = ppc_type_of_stub (section, irela, &hash,
12166 &plt_ent, destination,
12169 if (stub_type != ppc_stub_plt_call)
12171 /* Check whether we need a TOC adjusting stub.
12172 Since the linker pastes together pieces from
12173 different object files when creating the
12174 _init and _fini functions, it may be that a
12175 call to what looks like a local sym is in
12176 fact a call needing a TOC adjustment. */
12177 if (code_sec != NULL
12178 && code_sec->output_section != NULL
12179 && (htab->stub_group[code_sec->id].toc_off
12180 != htab->stub_group[section->id].toc_off)
12181 && (code_sec->has_toc_reloc
12182 || code_sec->makes_toc_func_call))
12183 stub_type = ppc_stub_long_branch_r2off;
12186 if (stub_type == ppc_stub_none)
12189 /* __tls_get_addr calls might be eliminated. */
12190 if (stub_type != ppc_stub_plt_call
12192 && (hash == htab->tls_get_addr
12193 || hash == htab->tls_get_addr_fd)
12194 && section->has_tls_reloc
12195 && irela != internal_relocs)
12197 /* Get tls info. */
12198 unsigned char *tls_mask;
12200 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12201 irela - 1, input_bfd))
12202 goto error_ret_free_internal;
12203 if (*tls_mask != 0)
12207 if (stub_type == ppc_stub_plt_call
12208 && irela + 1 < irelaend
12209 && irela[1].r_offset == irela->r_offset + 4
12210 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12212 if (!tocsave_find (htab, INSERT,
12213 &local_syms, irela + 1, input_bfd))
12214 goto error_ret_free_internal;
12216 else if (stub_type == ppc_stub_plt_call)
12217 stub_type = ppc_stub_plt_call_r2save;
12219 /* Support for grouping stub sections. */
12220 id_sec = htab->stub_group[section->id].link_sec;
12222 /* Get the name of this stub. */
12223 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12225 goto error_ret_free_internal;
12227 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12228 stub_name, FALSE, FALSE);
12229 if (stub_entry != NULL)
12231 /* The proper stub has already been created. */
12233 if (stub_type == ppc_stub_plt_call_r2save)
12234 stub_entry->stub_type = stub_type;
12238 stub_entry = ppc_add_stub (stub_name, section, info);
12239 if (stub_entry == NULL)
12242 error_ret_free_internal:
12243 if (elf_section_data (section)->relocs == NULL)
12244 free (internal_relocs);
12245 error_ret_free_local:
12246 if (local_syms != NULL
12247 && (symtab_hdr->contents
12248 != (unsigned char *) local_syms))
12253 stub_entry->stub_type = stub_type;
12254 if (stub_type != ppc_stub_plt_call
12255 && stub_type != ppc_stub_plt_call_r2save)
12257 stub_entry->target_value = code_value;
12258 stub_entry->target_section = code_sec;
12262 stub_entry->target_value = sym_value;
12263 stub_entry->target_section = sym_sec;
12265 stub_entry->h = hash;
12266 stub_entry->plt_ent = plt_ent;
12267 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12269 if (stub_entry->h != NULL)
12270 htab->stub_globals += 1;
12273 /* We're done with the internal relocs, free them. */
12274 if (elf_section_data (section)->relocs != internal_relocs)
12275 free (internal_relocs);
12278 if (local_syms != NULL
12279 && symtab_hdr->contents != (unsigned char *) local_syms)
12281 if (!info->keep_memory)
12284 symtab_hdr->contents = (unsigned char *) local_syms;
12288 /* We may have added some stubs. Find out the new size of the
12290 for (stub_sec = htab->params->stub_bfd->sections;
12292 stub_sec = stub_sec->next)
12293 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12295 stub_sec->rawsize = stub_sec->size;
12296 stub_sec->size = 0;
12297 stub_sec->reloc_count = 0;
12298 stub_sec->flags &= ~SEC_RELOC;
12301 htab->brlt->size = 0;
12302 htab->brlt->reloc_count = 0;
12303 htab->brlt->flags &= ~SEC_RELOC;
12304 if (htab->relbrlt != NULL)
12305 htab->relbrlt->size = 0;
12307 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12309 if (info->emitrelocations
12310 && htab->glink != NULL && htab->glink->size != 0)
12312 htab->glink->reloc_count = 1;
12313 htab->glink->flags |= SEC_RELOC;
12316 if (htab->glink_eh_frame != NULL
12317 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12318 && htab->glink_eh_frame->output_section->size != 0)
12320 size_t size = 0, align;
12322 for (stub_sec = htab->params->stub_bfd->sections;
12324 stub_sec = stub_sec->next)
12325 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12327 if (htab->glink != NULL && htab->glink->size != 0)
12330 size += sizeof (glink_eh_frame_cie);
12332 align <<= htab->glink_eh_frame->output_section->alignment_power;
12334 size = (size + align) & ~align;
12335 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12336 htab->glink_eh_frame->size = size;
12339 if (htab->params->plt_stub_align != 0)
12340 for (stub_sec = htab->params->stub_bfd->sections;
12342 stub_sec = stub_sec->next)
12343 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12344 stub_sec->size = ((stub_sec->size
12345 + (1 << htab->params->plt_stub_align) - 1)
12346 & (-1 << htab->params->plt_stub_align));
12348 for (stub_sec = htab->params->stub_bfd->sections;
12350 stub_sec = stub_sec->next)
12351 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12352 && stub_sec->rawsize != stub_sec->size)
12355 /* Exit from this loop when no stubs have been added, and no stubs
12356 have changed size. */
12357 if (stub_sec == NULL
12358 && (htab->glink_eh_frame == NULL
12359 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12362 /* Ask the linker to do its stuff. */
12363 (*htab->params->layout_sections_again) ();
12366 if (htab->glink_eh_frame != NULL
12367 && htab->glink_eh_frame->size != 0)
12370 bfd_byte *p, *last_fde;
12371 size_t last_fde_len, size, align, pad;
12372 asection *stub_sec;
12374 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12377 htab->glink_eh_frame->contents = p;
12380 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12381 /* CIE length (rewrite in case little-endian). */
12382 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12383 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12384 p += sizeof (glink_eh_frame_cie);
12386 for (stub_sec = htab->params->stub_bfd->sections;
12388 stub_sec = stub_sec->next)
12389 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12394 bfd_put_32 (htab->elf.dynobj, 20, p);
12397 val = p - htab->glink_eh_frame->contents;
12398 bfd_put_32 (htab->elf.dynobj, val, p);
12400 /* Offset to stub section, written later. */
12402 /* stub section size. */
12403 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12405 /* Augmentation. */
12410 if (htab->glink != NULL && htab->glink->size != 0)
12415 bfd_put_32 (htab->elf.dynobj, 20, p);
12418 val = p - htab->glink_eh_frame->contents;
12419 bfd_put_32 (htab->elf.dynobj, val, p);
12421 /* Offset to .glink, written later. */
12424 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12426 /* Augmentation. */
12429 *p++ = DW_CFA_advance_loc + 1;
12430 *p++ = DW_CFA_register;
12433 *p++ = DW_CFA_advance_loc + 4;
12434 *p++ = DW_CFA_restore_extended;
12437 /* Subsume any padding into the last FDE if user .eh_frame
12438 sections are aligned more than glink_eh_frame. Otherwise any
12439 zero padding will be seen as a terminator. */
12440 size = p - htab->glink_eh_frame->contents;
12442 align <<= htab->glink_eh_frame->output_section->alignment_power;
12444 pad = ((size + align) & ~align) - size;
12445 htab->glink_eh_frame->size = size + pad;
12446 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12449 maybe_strip_output (info, htab->brlt);
12450 if (htab->glink_eh_frame != NULL)
12451 maybe_strip_output (info, htab->glink_eh_frame);
12456 /* Called after we have determined section placement. If sections
12457 move, we'll be called again. Provide a value for TOCstart. */
12460 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12465 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12466 order. The TOC starts where the first of these sections starts. */
12467 s = bfd_get_section_by_name (obfd, ".got");
12468 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12469 s = bfd_get_section_by_name (obfd, ".toc");
12470 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12471 s = bfd_get_section_by_name (obfd, ".tocbss");
12472 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12473 s = bfd_get_section_by_name (obfd, ".plt");
12474 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12476 /* This may happen for
12477 o references to TOC base (SYM@toc / TOC[tc0]) without a
12479 o bad linker script
12480 o --gc-sections and empty TOC sections
12482 FIXME: Warn user? */
12484 /* Look for a likely section. We probably won't even be
12486 for (s = obfd->sections; s != NULL; s = s->next)
12487 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12489 == (SEC_ALLOC | SEC_SMALL_DATA))
12492 for (s = obfd->sections; s != NULL; s = s->next)
12493 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12494 == (SEC_ALLOC | SEC_SMALL_DATA))
12497 for (s = obfd->sections; s != NULL; s = s->next)
12498 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12502 for (s = obfd->sections; s != NULL; s = s->next)
12503 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12509 TOCstart = s->output_section->vma + s->output_offset;
12511 _bfd_set_gp_value (obfd, TOCstart);
12513 if (info != NULL && s != NULL)
12515 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12519 if (htab->elf.hgot != NULL)
12521 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12522 htab->elf.hgot->root.u.def.section = s;
12527 struct bfd_link_hash_entry *bh = NULL;
12528 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12529 s, TOC_BASE_OFF, NULL, FALSE,
12536 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12537 write out any global entry stubs. */
12540 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12542 struct bfd_link_info *info;
12543 struct ppc_link_hash_table *htab;
12544 struct plt_entry *pent;
12547 if (h->root.type == bfd_link_hash_indirect)
12550 if (!h->pointer_equality_needed)
12553 if (h->def_regular)
12557 htab = ppc_hash_table (info);
12562 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12563 if (pent->plt.offset != (bfd_vma) -1
12564 && pent->addend == 0)
12570 p = s->contents + h->root.u.def.value;
12571 plt = htab->elf.splt;
12572 if (!htab->elf.dynamic_sections_created
12573 || h->dynindx == -1)
12574 plt = htab->elf.iplt;
12575 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12576 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12578 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12580 info->callbacks->einfo
12581 (_("%P: linkage table error against `%T'\n"),
12582 h->root.root.string);
12583 bfd_set_error (bfd_error_bad_value);
12584 htab->stub_error = TRUE;
12587 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12588 if (htab->params->emit_stub_syms)
12590 size_t len = strlen (h->root.root.string);
12591 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12596 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12597 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12600 if (h->root.type == bfd_link_hash_new)
12602 h->root.type = bfd_link_hash_defined;
12603 h->root.u.def.section = s;
12604 h->root.u.def.value = p - s->contents;
12605 h->ref_regular = 1;
12606 h->def_regular = 1;
12607 h->ref_regular_nonweak = 1;
12608 h->forced_local = 1;
12613 if (PPC_HA (off) != 0)
12615 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12618 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12620 bfd_put_32 (s->owner, MTCTR_R12, p);
12622 bfd_put_32 (s->owner, BCTR, p);
12628 /* Build all the stubs associated with the current output file.
12629 The stubs are kept in a hash table attached to the main linker
12630 hash table. This function is called via gldelf64ppc_finish. */
12633 ppc64_elf_build_stubs (struct bfd_link_info *info,
12636 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12637 asection *stub_sec;
12639 int stub_sec_count = 0;
12644 /* Allocate memory to hold the linker stubs. */
12645 for (stub_sec = htab->params->stub_bfd->sections;
12647 stub_sec = stub_sec->next)
12648 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12649 && stub_sec->size != 0)
12651 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12652 if (stub_sec->contents == NULL)
12654 /* We want to check that built size is the same as calculated
12655 size. rawsize is a convenient location to use. */
12656 stub_sec->rawsize = stub_sec->size;
12657 stub_sec->size = 0;
12660 if (htab->glink != NULL && htab->glink->size != 0)
12665 /* Build the .glink plt call stub. */
12666 if (htab->params->emit_stub_syms)
12668 struct elf_link_hash_entry *h;
12669 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12670 TRUE, FALSE, FALSE);
12673 if (h->root.type == bfd_link_hash_new)
12675 h->root.type = bfd_link_hash_defined;
12676 h->root.u.def.section = htab->glink;
12677 h->root.u.def.value = 8;
12678 h->ref_regular = 1;
12679 h->def_regular = 1;
12680 h->ref_regular_nonweak = 1;
12681 h->forced_local = 1;
12685 plt0 = (htab->elf.splt->output_section->vma
12686 + htab->elf.splt->output_offset
12688 if (info->emitrelocations)
12690 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12693 r->r_offset = (htab->glink->output_offset
12694 + htab->glink->output_section->vma);
12695 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12696 r->r_addend = plt0;
12698 p = htab->glink->contents;
12699 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12700 bfd_put_64 (htab->glink->owner, plt0, p);
12704 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12706 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12708 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12710 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12712 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12714 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12716 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12718 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12720 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12722 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12727 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12729 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12731 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12733 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12735 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12737 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12739 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12741 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12743 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12745 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12747 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12749 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12752 bfd_put_32 (htab->glink->owner, BCTR, p);
12754 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12756 bfd_put_32 (htab->glink->owner, NOP, p);
12760 /* Build the .glink lazy link call stubs. */
12762 while (p < htab->glink->contents + htab->glink->rawsize)
12768 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12773 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12775 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12780 bfd_put_32 (htab->glink->owner,
12781 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12786 /* Build .glink global entry stubs. */
12787 if (htab->glink->size > htab->glink->rawsize)
12788 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12791 if (htab->brlt != NULL && htab->brlt->size != 0)
12793 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12795 if (htab->brlt->contents == NULL)
12798 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12800 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12801 htab->relbrlt->size);
12802 if (htab->relbrlt->contents == NULL)
12806 /* Build the stubs as directed by the stub hash table. */
12807 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12809 if (htab->relbrlt != NULL)
12810 htab->relbrlt->reloc_count = 0;
12812 if (htab->params->plt_stub_align != 0)
12813 for (stub_sec = htab->params->stub_bfd->sections;
12815 stub_sec = stub_sec->next)
12816 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12817 stub_sec->size = ((stub_sec->size
12818 + (1 << htab->params->plt_stub_align) - 1)
12819 & (-1 << htab->params->plt_stub_align));
12821 for (stub_sec = htab->params->stub_bfd->sections;
12823 stub_sec = stub_sec->next)
12824 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12826 stub_sec_count += 1;
12827 if (stub_sec->rawsize != stub_sec->size)
12831 /* Note that the glink_eh_frame check here is not only testing that
12832 the generated size matched the calculated size but also that
12833 bfd_elf_discard_info didn't make any changes to the section. */
12834 if (stub_sec != NULL
12835 || (htab->glink_eh_frame != NULL
12836 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12838 htab->stub_error = TRUE;
12839 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12842 if (htab->stub_error)
12847 *stats = bfd_malloc (500);
12848 if (*stats == NULL)
12851 sprintf (*stats, _("linker stubs in %u group%s\n"
12853 " toc adjust %lu\n"
12854 " long branch %lu\n"
12855 " long toc adj %lu\n"
12857 " plt call toc %lu\n"
12858 " global entry %lu"),
12860 stub_sec_count == 1 ? "" : "s",
12861 htab->stub_count[ppc_stub_long_branch - 1],
12862 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12863 htab->stub_count[ppc_stub_plt_branch - 1],
12864 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12865 htab->stub_count[ppc_stub_plt_call - 1],
12866 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12867 htab->stub_count[ppc_stub_global_entry - 1]);
12872 /* This function undoes the changes made by add_symbol_adjust. */
12875 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12877 struct ppc_link_hash_entry *eh;
12879 if (h->root.type == bfd_link_hash_indirect)
12882 eh = (struct ppc_link_hash_entry *) h;
12883 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12886 eh->elf.root.type = bfd_link_hash_undefined;
12891 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12893 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12896 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12899 /* What to do when ld finds relocations against symbols defined in
12900 discarded sections. */
12902 static unsigned int
12903 ppc64_elf_action_discarded (asection *sec)
12905 if (strcmp (".opd", sec->name) == 0)
12908 if (strcmp (".toc", sec->name) == 0)
12911 if (strcmp (".toc1", sec->name) == 0)
12914 return _bfd_elf_default_action_discarded (sec);
12917 /* The RELOCATE_SECTION function is called by the ELF backend linker
12918 to handle the relocations for a section.
12920 The relocs are always passed as Rela structures; if the section
12921 actually uses Rel structures, the r_addend field will always be
12924 This function is responsible for adjust the section contents as
12925 necessary, and (if using Rela relocs and generating a
12926 relocatable output file) adjusting the reloc addend as
12929 This function does not have to worry about setting the reloc
12930 address or the reloc symbol index.
12932 LOCAL_SYMS is a pointer to the swapped in local symbols.
12934 LOCAL_SECTIONS is an array giving the section in the input file
12935 corresponding to the st_shndx field of each local symbol.
12937 The global hash table entry for the global symbols can be found
12938 via elf_sym_hashes (input_bfd).
12940 When generating relocatable output, this function must handle
12941 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12942 going to be the section symbol corresponding to the output
12943 section, which means that the addend must be adjusted
12947 ppc64_elf_relocate_section (bfd *output_bfd,
12948 struct bfd_link_info *info,
12950 asection *input_section,
12951 bfd_byte *contents,
12952 Elf_Internal_Rela *relocs,
12953 Elf_Internal_Sym *local_syms,
12954 asection **local_sections)
12956 struct ppc_link_hash_table *htab;
12957 Elf_Internal_Shdr *symtab_hdr;
12958 struct elf_link_hash_entry **sym_hashes;
12959 Elf_Internal_Rela *rel;
12960 Elf_Internal_Rela *relend;
12961 Elf_Internal_Rela outrel;
12963 struct got_entry **local_got_ents;
12965 bfd_boolean ret = TRUE;
12966 bfd_boolean is_opd;
12967 /* Assume 'at' branch hints. */
12968 bfd_boolean is_isa_v2 = TRUE;
12969 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12971 /* Initialize howto table if needed. */
12972 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12975 htab = ppc_hash_table (info);
12979 /* Don't relocate stub sections. */
12980 if (input_section->owner == htab->params->stub_bfd)
12983 BFD_ASSERT (is_ppc64_elf (input_bfd));
12985 local_got_ents = elf_local_got_ents (input_bfd);
12986 TOCstart = elf_gp (output_bfd);
12987 symtab_hdr = &elf_symtab_hdr (input_bfd);
12988 sym_hashes = elf_sym_hashes (input_bfd);
12989 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12992 relend = relocs + input_section->reloc_count;
12993 for (; rel < relend; rel++)
12995 enum elf_ppc64_reloc_type r_type;
12997 bfd_reloc_status_type r;
12998 Elf_Internal_Sym *sym;
13000 struct elf_link_hash_entry *h_elf;
13001 struct ppc_link_hash_entry *h;
13002 struct ppc_link_hash_entry *fdh;
13003 const char *sym_name;
13004 unsigned long r_symndx, toc_symndx;
13005 bfd_vma toc_addend;
13006 unsigned char tls_mask, tls_gd, tls_type;
13007 unsigned char sym_type;
13008 bfd_vma relocation;
13009 bfd_boolean unresolved_reloc;
13010 bfd_boolean warned;
13011 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13014 struct ppc_stub_hash_entry *stub_entry;
13015 bfd_vma max_br_offset;
13017 const Elf_Internal_Rela orig_rel = *rel;
13018 reloc_howto_type *howto;
13019 struct reloc_howto_struct alt_howto;
13021 r_type = ELF64_R_TYPE (rel->r_info);
13022 r_symndx = ELF64_R_SYM (rel->r_info);
13024 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13025 symbol of the previous ADDR64 reloc. The symbol gives us the
13026 proper TOC base to use. */
13027 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13029 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13031 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13037 unresolved_reloc = FALSE;
13040 if (r_symndx < symtab_hdr->sh_info)
13042 /* It's a local symbol. */
13043 struct _opd_sec_data *opd;
13045 sym = local_syms + r_symndx;
13046 sec = local_sections[r_symndx];
13047 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13048 sym_type = ELF64_ST_TYPE (sym->st_info);
13049 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13050 opd = get_opd_info (sec);
13051 if (opd != NULL && opd->adjust != NULL)
13053 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13058 /* If this is a relocation against the opd section sym
13059 and we have edited .opd, adjust the reloc addend so
13060 that ld -r and ld --emit-relocs output is correct.
13061 If it is a reloc against some other .opd symbol,
13062 then the symbol value will be adjusted later. */
13063 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13064 rel->r_addend += adjust;
13066 relocation += adjust;
13072 bfd_boolean ignored;
13074 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13075 r_symndx, symtab_hdr, sym_hashes,
13076 h_elf, sec, relocation,
13077 unresolved_reloc, warned, ignored);
13078 sym_name = h_elf->root.root.string;
13079 sym_type = h_elf->type;
13081 && sec->owner == output_bfd
13082 && strcmp (sec->name, ".opd") == 0)
13084 /* This is a symbol defined in a linker script. All
13085 such are defined in output sections, even those
13086 defined by simple assignment from a symbol defined in
13087 an input section. Transfer the symbol to an
13088 appropriate input .opd section, so that a branch to
13089 this symbol will be mapped to the location specified
13090 by the opd entry. */
13091 struct bfd_link_order *lo;
13092 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13093 if (lo->type == bfd_indirect_link_order)
13095 asection *isec = lo->u.indirect.section;
13096 if (h_elf->root.u.def.value >= isec->output_offset
13097 && h_elf->root.u.def.value < (isec->output_offset
13100 h_elf->root.u.def.value -= isec->output_offset;
13101 h_elf->root.u.def.section = isec;
13108 h = (struct ppc_link_hash_entry *) h_elf;
13110 if (sec != NULL && discarded_section (sec))
13111 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13113 ppc64_elf_howto_table[r_type], 0,
13116 if (info->relocatable)
13119 if (h != NULL && &h->elf == htab->elf.hgot)
13121 relocation = (TOCstart
13122 + htab->stub_group[input_section->id].toc_off);
13123 sec = bfd_abs_section_ptr;
13124 unresolved_reloc = FALSE;
13127 /* TLS optimizations. Replace instruction sequences and relocs
13128 based on information we collected in tls_optimize. We edit
13129 RELOCS so that --emit-relocs will output something sensible
13130 for the final instruction stream. */
13135 tls_mask = h->tls_mask;
13136 else if (local_got_ents != NULL)
13138 struct plt_entry **local_plt = (struct plt_entry **)
13139 (local_got_ents + symtab_hdr->sh_info);
13140 unsigned char *lgot_masks = (unsigned char *)
13141 (local_plt + symtab_hdr->sh_info);
13142 tls_mask = lgot_masks[r_symndx];
13145 && (r_type == R_PPC64_TLS
13146 || r_type == R_PPC64_TLSGD
13147 || r_type == R_PPC64_TLSLD))
13149 /* Check for toc tls entries. */
13150 unsigned char *toc_tls;
13152 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13153 &local_syms, rel, input_bfd))
13157 tls_mask = *toc_tls;
13160 /* Check that tls relocs are used with tls syms, and non-tls
13161 relocs are used with non-tls syms. */
13162 if (r_symndx != STN_UNDEF
13163 && r_type != R_PPC64_NONE
13165 || h->elf.root.type == bfd_link_hash_defined
13166 || h->elf.root.type == bfd_link_hash_defweak)
13167 && (IS_PPC64_TLS_RELOC (r_type)
13168 != (sym_type == STT_TLS
13169 || (sym_type == STT_SECTION
13170 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13173 && (r_type == R_PPC64_TLS
13174 || r_type == R_PPC64_TLSGD
13175 || r_type == R_PPC64_TLSLD))
13176 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13179 info->callbacks->einfo
13180 (!IS_PPC64_TLS_RELOC (r_type)
13181 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13182 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13183 input_bfd, input_section, rel->r_offset,
13184 ppc64_elf_howto_table[r_type]->name,
13188 /* Ensure reloc mapping code below stays sane. */
13189 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13190 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13191 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13192 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13193 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13194 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13195 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13196 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13197 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13198 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13206 case R_PPC64_LO_DS_OPT:
13207 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13208 if ((insn & (0x3f << 26)) != 58u << 26)
13210 insn += (14u << 26) - (58u << 26);
13211 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13212 r_type = R_PPC64_TOC16_LO;
13213 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13216 case R_PPC64_TOC16:
13217 case R_PPC64_TOC16_LO:
13218 case R_PPC64_TOC16_DS:
13219 case R_PPC64_TOC16_LO_DS:
13221 /* Check for toc tls entries. */
13222 unsigned char *toc_tls;
13225 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13226 &local_syms, rel, input_bfd);
13232 tls_mask = *toc_tls;
13233 if (r_type == R_PPC64_TOC16_DS
13234 || r_type == R_PPC64_TOC16_LO_DS)
13237 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13242 /* If we found a GD reloc pair, then we might be
13243 doing a GD->IE transition. */
13246 tls_gd = TLS_TPRELGD;
13247 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13250 else if (retval == 3)
13252 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13260 case R_PPC64_GOT_TPREL16_HI:
13261 case R_PPC64_GOT_TPREL16_HA:
13263 && (tls_mask & TLS_TPREL) == 0)
13265 rel->r_offset -= d_offset;
13266 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13267 r_type = R_PPC64_NONE;
13268 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13272 case R_PPC64_GOT_TPREL16_DS:
13273 case R_PPC64_GOT_TPREL16_LO_DS:
13275 && (tls_mask & TLS_TPREL) == 0)
13278 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13280 insn |= 0x3c0d0000; /* addis 0,13,0 */
13281 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13282 r_type = R_PPC64_TPREL16_HA;
13283 if (toc_symndx != 0)
13285 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13286 rel->r_addend = toc_addend;
13287 /* We changed the symbol. Start over in order to
13288 get h, sym, sec etc. right. */
13293 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13299 && (tls_mask & TLS_TPREL) == 0)
13301 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13302 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13305 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13306 /* Was PPC64_TLS which sits on insn boundary, now
13307 PPC64_TPREL16_LO which is at low-order half-word. */
13308 rel->r_offset += d_offset;
13309 r_type = R_PPC64_TPREL16_LO;
13310 if (toc_symndx != 0)
13312 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13313 rel->r_addend = toc_addend;
13314 /* We changed the symbol. Start over in order to
13315 get h, sym, sec etc. right. */
13320 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13324 case R_PPC64_GOT_TLSGD16_HI:
13325 case R_PPC64_GOT_TLSGD16_HA:
13326 tls_gd = TLS_TPRELGD;
13327 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13331 case R_PPC64_GOT_TLSLD16_HI:
13332 case R_PPC64_GOT_TLSLD16_HA:
13333 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13336 if ((tls_mask & tls_gd) != 0)
13337 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13338 + R_PPC64_GOT_TPREL16_DS);
13341 rel->r_offset -= d_offset;
13342 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13343 r_type = R_PPC64_NONE;
13345 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13349 case R_PPC64_GOT_TLSGD16:
13350 case R_PPC64_GOT_TLSGD16_LO:
13351 tls_gd = TLS_TPRELGD;
13352 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13356 case R_PPC64_GOT_TLSLD16:
13357 case R_PPC64_GOT_TLSLD16_LO:
13358 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13360 unsigned int insn1, insn2, insn3;
13364 offset = (bfd_vma) -1;
13365 /* If not using the newer R_PPC64_TLSGD/LD to mark
13366 __tls_get_addr calls, we must trust that the call
13367 stays with its arg setup insns, ie. that the next
13368 reloc is the __tls_get_addr call associated with
13369 the current reloc. Edit both insns. */
13370 if (input_section->has_tls_get_addr_call
13371 && rel + 1 < relend
13372 && branch_reloc_hash_match (input_bfd, rel + 1,
13373 htab->tls_get_addr,
13374 htab->tls_get_addr_fd))
13375 offset = rel[1].r_offset;
13376 if ((tls_mask & tls_gd) != 0)
13379 insn1 = bfd_get_32 (output_bfd,
13380 contents + rel->r_offset - d_offset);
13381 insn1 &= (1 << 26) - (1 << 2);
13382 insn1 |= 58 << 26; /* ld */
13383 insn2 = 0x7c636a14; /* add 3,3,13 */
13384 if (offset != (bfd_vma) -1)
13385 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13386 if ((tls_mask & TLS_EXPLICIT) == 0)
13387 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13388 + R_PPC64_GOT_TPREL16_DS);
13390 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13391 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13396 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13397 insn2 = 0x38630000; /* addi 3,3,0 */
13400 /* Was an LD reloc. */
13402 sec = local_sections[toc_symndx];
13404 r_symndx < symtab_hdr->sh_info;
13406 if (local_sections[r_symndx] == sec)
13408 if (r_symndx >= symtab_hdr->sh_info)
13409 r_symndx = STN_UNDEF;
13410 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13411 if (r_symndx != STN_UNDEF)
13412 rel->r_addend -= (local_syms[r_symndx].st_value
13413 + sec->output_offset
13414 + sec->output_section->vma);
13416 else if (toc_symndx != 0)
13418 r_symndx = toc_symndx;
13419 rel->r_addend = toc_addend;
13421 r_type = R_PPC64_TPREL16_HA;
13422 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13423 if (offset != (bfd_vma) -1)
13425 rel[1].r_info = ELF64_R_INFO (r_symndx,
13426 R_PPC64_TPREL16_LO);
13427 rel[1].r_offset = offset + d_offset;
13428 rel[1].r_addend = rel->r_addend;
13431 bfd_put_32 (output_bfd, insn1,
13432 contents + rel->r_offset - d_offset);
13433 if (offset != (bfd_vma) -1)
13435 insn3 = bfd_get_32 (output_bfd,
13436 contents + offset + 4);
13438 || insn3 == CROR_151515 || insn3 == CROR_313131)
13440 rel[1].r_offset += 4;
13441 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13444 bfd_put_32 (output_bfd, insn2, contents + offset);
13446 if ((tls_mask & tls_gd) == 0
13447 && (tls_gd == 0 || toc_symndx != 0))
13449 /* We changed the symbol. Start over in order
13450 to get h, sym, sec etc. right. */
13457 case R_PPC64_TLSGD:
13458 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13460 unsigned int insn2, insn3;
13461 bfd_vma offset = rel->r_offset;
13463 if ((tls_mask & TLS_TPRELGD) != 0)
13466 r_type = R_PPC64_NONE;
13467 insn2 = 0x7c636a14; /* add 3,3,13 */
13472 if (toc_symndx != 0)
13474 r_symndx = toc_symndx;
13475 rel->r_addend = toc_addend;
13477 r_type = R_PPC64_TPREL16_LO;
13478 rel->r_offset = offset + d_offset;
13479 insn2 = 0x38630000; /* addi 3,3,0 */
13481 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13482 /* Zap the reloc on the _tls_get_addr call too. */
13483 BFD_ASSERT (offset == rel[1].r_offset);
13484 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13485 insn3 = bfd_get_32 (output_bfd,
13486 contents + offset + 4);
13488 || insn3 == CROR_151515 || insn3 == CROR_313131)
13490 rel->r_offset += 4;
13491 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13494 bfd_put_32 (output_bfd, insn2, contents + offset);
13495 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13503 case R_PPC64_TLSLD:
13504 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13506 unsigned int insn2, insn3;
13507 bfd_vma offset = rel->r_offset;
13510 sec = local_sections[toc_symndx];
13512 r_symndx < symtab_hdr->sh_info;
13514 if (local_sections[r_symndx] == sec)
13516 if (r_symndx >= symtab_hdr->sh_info)
13517 r_symndx = STN_UNDEF;
13518 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13519 if (r_symndx != STN_UNDEF)
13520 rel->r_addend -= (local_syms[r_symndx].st_value
13521 + sec->output_offset
13522 + sec->output_section->vma);
13524 r_type = R_PPC64_TPREL16_LO;
13525 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13526 rel->r_offset = offset + d_offset;
13527 /* Zap the reloc on the _tls_get_addr call too. */
13528 BFD_ASSERT (offset == rel[1].r_offset);
13529 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13530 insn2 = 0x38630000; /* addi 3,3,0 */
13531 insn3 = bfd_get_32 (output_bfd,
13532 contents + offset + 4);
13534 || insn3 == CROR_151515 || insn3 == CROR_313131)
13536 rel->r_offset += 4;
13537 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13540 bfd_put_32 (output_bfd, insn2, contents + offset);
13546 case R_PPC64_DTPMOD64:
13547 if (rel + 1 < relend
13548 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13549 && rel[1].r_offset == rel->r_offset + 8)
13551 if ((tls_mask & TLS_GD) == 0)
13553 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13554 if ((tls_mask & TLS_TPRELGD) != 0)
13555 r_type = R_PPC64_TPREL64;
13558 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13559 r_type = R_PPC64_NONE;
13561 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13566 if ((tls_mask & TLS_LD) == 0)
13568 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13569 r_type = R_PPC64_NONE;
13570 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13575 case R_PPC64_TPREL64:
13576 if ((tls_mask & TLS_TPREL) == 0)
13578 r_type = R_PPC64_NONE;
13579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13583 case R_PPC64_REL16_HA:
13584 /* If we are generating a non-PIC executable, edit
13585 . 0: addis 2,12,.TOC.-0b@ha
13586 . addi 2,2,.TOC.-0b@l
13587 used by ELFv2 global entry points to set up r2, to
13590 if .TOC. is in range. */
13592 && !info->traditional_format
13593 && h != NULL && &h->elf == htab->elf.hgot
13594 && rel + 1 < relend
13595 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13596 && rel[1].r_offset == rel->r_offset + 4
13597 && rel[1].r_addend == rel->r_addend + 4
13598 && relocation + 0x80008000 <= 0xffffffff)
13600 unsigned int insn1, insn2;
13601 bfd_vma offset = rel->r_offset - d_offset;
13602 insn1 = bfd_get_32 (output_bfd, contents + offset);
13603 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13604 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13605 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13607 r_type = R_PPC64_ADDR16_HA;
13608 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13609 rel->r_addend -= d_offset;
13610 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13611 rel[1].r_addend -= d_offset + 4;
13612 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13618 /* Handle other relocations that tweak non-addend part of insn. */
13620 max_br_offset = 1 << 25;
13621 addend = rel->r_addend;
13622 reloc_dest = DEST_NORMAL;
13628 case R_PPC64_TOCSAVE:
13629 if (relocation + addend == (rel->r_offset
13630 + input_section->output_offset
13631 + input_section->output_section->vma)
13632 && tocsave_find (htab, NO_INSERT,
13633 &local_syms, rel, input_bfd))
13635 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13637 || insn == CROR_151515 || insn == CROR_313131)
13638 bfd_put_32 (input_bfd,
13639 STD_R2_0R1 + STK_TOC (htab),
13640 contents + rel->r_offset);
13644 /* Branch taken prediction relocations. */
13645 case R_PPC64_ADDR14_BRTAKEN:
13646 case R_PPC64_REL14_BRTAKEN:
13647 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13650 /* Branch not taken prediction relocations. */
13651 case R_PPC64_ADDR14_BRNTAKEN:
13652 case R_PPC64_REL14_BRNTAKEN:
13653 insn |= bfd_get_32 (output_bfd,
13654 contents + rel->r_offset) & ~(0x01 << 21);
13657 case R_PPC64_REL14:
13658 max_br_offset = 1 << 15;
13661 case R_PPC64_REL24:
13662 /* Calls to functions with a different TOC, such as calls to
13663 shared objects, need to alter the TOC pointer. This is
13664 done using a linkage stub. A REL24 branching to these
13665 linkage stubs needs to be followed by a nop, as the nop
13666 will be replaced with an instruction to restore the TOC
13671 && h->oh->is_func_descriptor)
13672 fdh = ppc_follow_link (h->oh);
13673 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13675 if (stub_entry != NULL
13676 && (stub_entry->stub_type == ppc_stub_plt_call
13677 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13678 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13679 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13681 bfd_boolean can_plt_call = FALSE;
13683 /* All of these stubs will modify r2, so there must be a
13684 branch and link followed by a nop. The nop is
13685 replaced by an insn to restore r2. */
13686 if (rel->r_offset + 8 <= input_section->size)
13690 br = bfd_get_32 (input_bfd,
13691 contents + rel->r_offset);
13696 nop = bfd_get_32 (input_bfd,
13697 contents + rel->r_offset + 4);
13699 || nop == CROR_151515 || nop == CROR_313131)
13702 && (h == htab->tls_get_addr_fd
13703 || h == htab->tls_get_addr)
13704 && !htab->params->no_tls_get_addr_opt)
13706 /* Special stub used, leave nop alone. */
13709 bfd_put_32 (input_bfd,
13710 LD_R2_0R1 + STK_TOC (htab),
13711 contents + rel->r_offset + 4);
13712 can_plt_call = TRUE;
13717 if (!can_plt_call && h != NULL)
13719 const char *name = h->elf.root.root.string;
13724 if (strncmp (name, "__libc_start_main", 17) == 0
13725 && (name[17] == 0 || name[17] == '@'))
13727 /* Allow crt1 branch to go via a toc adjusting
13728 stub. Other calls that never return could do
13729 the same, if we could detect such. */
13730 can_plt_call = TRUE;
13736 /* g++ as of 20130507 emits self-calls without a
13737 following nop. This is arguably wrong since we
13738 have conflicting information. On the one hand a
13739 global symbol and on the other a local call
13740 sequence, but don't error for this special case.
13741 It isn't possible to cheaply verify we have
13742 exactly such a call. Allow all calls to the same
13744 asection *code_sec = sec;
13746 if (get_opd_info (sec) != NULL)
13748 bfd_vma off = (relocation + addend
13749 - sec->output_section->vma
13750 - sec->output_offset);
13752 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13754 if (code_sec == input_section)
13755 can_plt_call = TRUE;
13760 if (stub_entry->stub_type == ppc_stub_plt_call
13761 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13762 info->callbacks->einfo
13763 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13764 "recompile with -fPIC\n"),
13765 input_bfd, input_section, rel->r_offset, sym_name);
13767 info->callbacks->einfo
13768 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13769 "(-mcmodel=small toc adjust stub)\n"),
13770 input_bfd, input_section, rel->r_offset, sym_name);
13772 bfd_set_error (bfd_error_bad_value);
13777 && (stub_entry->stub_type == ppc_stub_plt_call
13778 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13779 unresolved_reloc = FALSE;
13782 if ((stub_entry == NULL
13783 || stub_entry->stub_type == ppc_stub_long_branch
13784 || stub_entry->stub_type == ppc_stub_plt_branch)
13785 && get_opd_info (sec) != NULL)
13787 /* The branch destination is the value of the opd entry. */
13788 bfd_vma off = (relocation + addend
13789 - sec->output_section->vma
13790 - sec->output_offset);
13791 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13792 if (dest != (bfd_vma) -1)
13796 reloc_dest = DEST_OPD;
13800 /* If the branch is out of reach we ought to have a long
13802 from = (rel->r_offset
13803 + input_section->output_offset
13804 + input_section->output_section->vma);
13806 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13810 if (stub_entry != NULL
13811 && (stub_entry->stub_type == ppc_stub_long_branch
13812 || stub_entry->stub_type == ppc_stub_plt_branch)
13813 && (r_type == R_PPC64_ADDR14_BRTAKEN
13814 || r_type == R_PPC64_ADDR14_BRNTAKEN
13815 || (relocation + addend - from + max_br_offset
13816 < 2 * max_br_offset)))
13817 /* Don't use the stub if this branch is in range. */
13820 if (stub_entry != NULL)
13822 /* Munge up the value and addend so that we call the stub
13823 rather than the procedure directly. */
13824 relocation = (stub_entry->stub_offset
13825 + stub_entry->stub_sec->output_offset
13826 + stub_entry->stub_sec->output_section->vma);
13828 reloc_dest = DEST_STUB;
13830 if ((stub_entry->stub_type == ppc_stub_plt_call
13831 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13832 && (ALWAYS_EMIT_R2SAVE
13833 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13834 && rel + 1 < relend
13835 && rel[1].r_offset == rel->r_offset + 4
13836 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13844 /* Set 'a' bit. This is 0b00010 in BO field for branch
13845 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13846 for branch on CTR insns (BO == 1a00t or 1a01t). */
13847 if ((insn & (0x14 << 21)) == (0x04 << 21))
13848 insn |= 0x02 << 21;
13849 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13850 insn |= 0x08 << 21;
13856 /* Invert 'y' bit if not the default. */
13857 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13858 insn ^= 0x01 << 21;
13861 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13864 /* NOP out calls to undefined weak functions.
13865 We can thus call a weak function without first
13866 checking whether the function is defined. */
13868 && h->elf.root.type == bfd_link_hash_undefweak
13869 && h->elf.dynindx == -1
13870 && r_type == R_PPC64_REL24
13874 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13880 /* Set `addend'. */
13885 info->callbacks->einfo
13886 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13887 input_bfd, (int) r_type, sym_name);
13889 bfd_set_error (bfd_error_bad_value);
13895 case R_PPC64_TLSGD:
13896 case R_PPC64_TLSLD:
13897 case R_PPC64_TOCSAVE:
13898 case R_PPC64_GNU_VTINHERIT:
13899 case R_PPC64_GNU_VTENTRY:
13902 /* GOT16 relocations. Like an ADDR16 using the symbol's
13903 address in the GOT as relocation value instead of the
13904 symbol's value itself. Also, create a GOT entry for the
13905 symbol and put the symbol value there. */
13906 case R_PPC64_GOT_TLSGD16:
13907 case R_PPC64_GOT_TLSGD16_LO:
13908 case R_PPC64_GOT_TLSGD16_HI:
13909 case R_PPC64_GOT_TLSGD16_HA:
13910 tls_type = TLS_TLS | TLS_GD;
13913 case R_PPC64_GOT_TLSLD16:
13914 case R_PPC64_GOT_TLSLD16_LO:
13915 case R_PPC64_GOT_TLSLD16_HI:
13916 case R_PPC64_GOT_TLSLD16_HA:
13917 tls_type = TLS_TLS | TLS_LD;
13920 case R_PPC64_GOT_TPREL16_DS:
13921 case R_PPC64_GOT_TPREL16_LO_DS:
13922 case R_PPC64_GOT_TPREL16_HI:
13923 case R_PPC64_GOT_TPREL16_HA:
13924 tls_type = TLS_TLS | TLS_TPREL;
13927 case R_PPC64_GOT_DTPREL16_DS:
13928 case R_PPC64_GOT_DTPREL16_LO_DS:
13929 case R_PPC64_GOT_DTPREL16_HI:
13930 case R_PPC64_GOT_DTPREL16_HA:
13931 tls_type = TLS_TLS | TLS_DTPREL;
13934 case R_PPC64_GOT16:
13935 case R_PPC64_GOT16_LO:
13936 case R_PPC64_GOT16_HI:
13937 case R_PPC64_GOT16_HA:
13938 case R_PPC64_GOT16_DS:
13939 case R_PPC64_GOT16_LO_DS:
13942 /* Relocation is to the entry for this symbol in the global
13947 unsigned long indx = 0;
13948 struct got_entry *ent;
13950 if (tls_type == (TLS_TLS | TLS_LD)
13952 || !h->elf.def_dynamic))
13953 ent = ppc64_tlsld_got (input_bfd);
13959 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13960 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13963 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13964 /* This is actually a static link, or it is a
13965 -Bsymbolic link and the symbol is defined
13966 locally, or the symbol was forced to be local
13967 because of a version file. */
13971 BFD_ASSERT (h->elf.dynindx != -1);
13972 indx = h->elf.dynindx;
13973 unresolved_reloc = FALSE;
13975 ent = h->elf.got.glist;
13979 if (local_got_ents == NULL)
13981 ent = local_got_ents[r_symndx];
13984 for (; ent != NULL; ent = ent->next)
13985 if (ent->addend == orig_rel.r_addend
13986 && ent->owner == input_bfd
13987 && ent->tls_type == tls_type)
13993 if (ent->is_indirect)
13994 ent = ent->got.ent;
13995 offp = &ent->got.offset;
13996 got = ppc64_elf_tdata (ent->owner)->got;
14000 /* The offset must always be a multiple of 8. We use the
14001 least significant bit to record whether we have already
14002 processed this entry. */
14004 if ((off & 1) != 0)
14008 /* Generate relocs for the dynamic linker, except in
14009 the case of TLSLD where we'll use one entry per
14017 ? h->elf.type == STT_GNU_IFUNC
14018 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14020 relgot = htab->elf.irelplt;
14021 else if ((info->shared || indx != 0)
14023 || (tls_type == (TLS_TLS | TLS_LD)
14024 && !h->elf.def_dynamic)
14025 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14026 || h->elf.root.type != bfd_link_hash_undefweak))
14027 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14028 if (relgot != NULL)
14030 outrel.r_offset = (got->output_section->vma
14031 + got->output_offset
14033 outrel.r_addend = addend;
14034 if (tls_type & (TLS_LD | TLS_GD))
14036 outrel.r_addend = 0;
14037 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14038 if (tls_type == (TLS_TLS | TLS_GD))
14040 loc = relgot->contents;
14041 loc += (relgot->reloc_count++
14042 * sizeof (Elf64_External_Rela));
14043 bfd_elf64_swap_reloca_out (output_bfd,
14045 outrel.r_offset += 8;
14046 outrel.r_addend = addend;
14048 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14051 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14052 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14053 else if (tls_type == (TLS_TLS | TLS_TPREL))
14054 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14055 else if (indx != 0)
14056 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14060 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14062 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14064 /* Write the .got section contents for the sake
14066 loc = got->contents + off;
14067 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14071 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14073 outrel.r_addend += relocation;
14074 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14075 outrel.r_addend -= htab->elf.tls_sec->vma;
14077 loc = relgot->contents;
14078 loc += (relgot->reloc_count++
14079 * sizeof (Elf64_External_Rela));
14080 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14083 /* Init the .got section contents here if we're not
14084 emitting a reloc. */
14087 relocation += addend;
14088 if (tls_type == (TLS_TLS | TLS_LD))
14090 else if (tls_type != 0)
14092 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14093 if (tls_type == (TLS_TLS | TLS_TPREL))
14094 relocation += DTP_OFFSET - TP_OFFSET;
14096 if (tls_type == (TLS_TLS | TLS_GD))
14098 bfd_put_64 (output_bfd, relocation,
14099 got->contents + off + 8);
14104 bfd_put_64 (output_bfd, relocation,
14105 got->contents + off);
14109 if (off >= (bfd_vma) -2)
14112 relocation = got->output_section->vma + got->output_offset + off;
14113 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14117 case R_PPC64_PLT16_HA:
14118 case R_PPC64_PLT16_HI:
14119 case R_PPC64_PLT16_LO:
14120 case R_PPC64_PLT32:
14121 case R_PPC64_PLT64:
14122 /* Relocation is to the entry for this symbol in the
14123 procedure linkage table. */
14125 /* Resolve a PLT reloc against a local symbol directly,
14126 without using the procedure linkage table. */
14130 /* It's possible that we didn't make a PLT entry for this
14131 symbol. This happens when statically linking PIC code,
14132 or when using -Bsymbolic. Go find a match if there is a
14134 if (htab->elf.splt != NULL)
14136 struct plt_entry *ent;
14137 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14138 if (ent->plt.offset != (bfd_vma) -1
14139 && ent->addend == orig_rel.r_addend)
14141 relocation = (htab->elf.splt->output_section->vma
14142 + htab->elf.splt->output_offset
14143 + ent->plt.offset);
14144 unresolved_reloc = FALSE;
14151 /* Relocation value is TOC base. */
14152 relocation = TOCstart;
14153 if (r_symndx == STN_UNDEF)
14154 relocation += htab->stub_group[input_section->id].toc_off;
14155 else if (unresolved_reloc)
14157 else if (sec != NULL && sec->id <= htab->top_id)
14158 relocation += htab->stub_group[sec->id].toc_off;
14160 unresolved_reloc = TRUE;
14163 /* TOC16 relocs. We want the offset relative to the TOC base,
14164 which is the address of the start of the TOC plus 0x8000.
14165 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14167 case R_PPC64_TOC16:
14168 case R_PPC64_TOC16_LO:
14169 case R_PPC64_TOC16_HI:
14170 case R_PPC64_TOC16_DS:
14171 case R_PPC64_TOC16_LO_DS:
14172 case R_PPC64_TOC16_HA:
14173 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14176 /* Relocate against the beginning of the section. */
14177 case R_PPC64_SECTOFF:
14178 case R_PPC64_SECTOFF_LO:
14179 case R_PPC64_SECTOFF_HI:
14180 case R_PPC64_SECTOFF_DS:
14181 case R_PPC64_SECTOFF_LO_DS:
14182 case R_PPC64_SECTOFF_HA:
14184 addend -= sec->output_section->vma;
14187 case R_PPC64_REL16:
14188 case R_PPC64_REL16_LO:
14189 case R_PPC64_REL16_HI:
14190 case R_PPC64_REL16_HA:
14193 case R_PPC64_REL14:
14194 case R_PPC64_REL14_BRNTAKEN:
14195 case R_PPC64_REL14_BRTAKEN:
14196 case R_PPC64_REL24:
14199 case R_PPC64_TPREL16:
14200 case R_PPC64_TPREL16_LO:
14201 case R_PPC64_TPREL16_HI:
14202 case R_PPC64_TPREL16_HA:
14203 case R_PPC64_TPREL16_DS:
14204 case R_PPC64_TPREL16_LO_DS:
14205 case R_PPC64_TPREL16_HIGH:
14206 case R_PPC64_TPREL16_HIGHA:
14207 case R_PPC64_TPREL16_HIGHER:
14208 case R_PPC64_TPREL16_HIGHERA:
14209 case R_PPC64_TPREL16_HIGHEST:
14210 case R_PPC64_TPREL16_HIGHESTA:
14212 && h->elf.root.type == bfd_link_hash_undefweak
14213 && h->elf.dynindx == -1)
14215 /* Make this relocation against an undefined weak symbol
14216 resolve to zero. This is really just a tweak, since
14217 code using weak externs ought to check that they are
14218 defined before using them. */
14219 bfd_byte *p = contents + rel->r_offset - d_offset;
14221 insn = bfd_get_32 (output_bfd, p);
14222 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14224 bfd_put_32 (output_bfd, insn, p);
14227 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14229 /* The TPREL16 relocs shouldn't really be used in shared
14230 libs as they will result in DT_TEXTREL being set, but
14231 support them anyway. */
14235 case R_PPC64_DTPREL16:
14236 case R_PPC64_DTPREL16_LO:
14237 case R_PPC64_DTPREL16_HI:
14238 case R_PPC64_DTPREL16_HA:
14239 case R_PPC64_DTPREL16_DS:
14240 case R_PPC64_DTPREL16_LO_DS:
14241 case R_PPC64_DTPREL16_HIGH:
14242 case R_PPC64_DTPREL16_HIGHA:
14243 case R_PPC64_DTPREL16_HIGHER:
14244 case R_PPC64_DTPREL16_HIGHERA:
14245 case R_PPC64_DTPREL16_HIGHEST:
14246 case R_PPC64_DTPREL16_HIGHESTA:
14247 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14250 case R_PPC64_ADDR64_LOCAL:
14251 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14256 case R_PPC64_DTPMOD64:
14261 case R_PPC64_TPREL64:
14262 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14265 case R_PPC64_DTPREL64:
14266 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14269 /* Relocations that may need to be propagated if this is a
14271 case R_PPC64_REL30:
14272 case R_PPC64_REL32:
14273 case R_PPC64_REL64:
14274 case R_PPC64_ADDR14:
14275 case R_PPC64_ADDR14_BRNTAKEN:
14276 case R_PPC64_ADDR14_BRTAKEN:
14277 case R_PPC64_ADDR16:
14278 case R_PPC64_ADDR16_DS:
14279 case R_PPC64_ADDR16_HA:
14280 case R_PPC64_ADDR16_HI:
14281 case R_PPC64_ADDR16_HIGH:
14282 case R_PPC64_ADDR16_HIGHA:
14283 case R_PPC64_ADDR16_HIGHER:
14284 case R_PPC64_ADDR16_HIGHERA:
14285 case R_PPC64_ADDR16_HIGHEST:
14286 case R_PPC64_ADDR16_HIGHESTA:
14287 case R_PPC64_ADDR16_LO:
14288 case R_PPC64_ADDR16_LO_DS:
14289 case R_PPC64_ADDR24:
14290 case R_PPC64_ADDR32:
14291 case R_PPC64_ADDR64:
14292 case R_PPC64_UADDR16:
14293 case R_PPC64_UADDR32:
14294 case R_PPC64_UADDR64:
14296 if ((input_section->flags & SEC_ALLOC) == 0)
14299 if (NO_OPD_RELOCS && is_opd)
14304 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14305 || h->elf.root.type != bfd_link_hash_undefweak)
14306 && (must_be_dyn_reloc (info, r_type)
14307 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14308 || (ELIMINATE_COPY_RELOCS
14311 && h->elf.dynindx != -1
14312 && !h->elf.non_got_ref
14313 && !h->elf.def_regular)
14316 ? h->elf.type == STT_GNU_IFUNC
14317 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14319 bfd_boolean skip, relocate;
14323 /* When generating a dynamic object, these relocations
14324 are copied into the output file to be resolved at run
14330 out_off = _bfd_elf_section_offset (output_bfd, info,
14331 input_section, rel->r_offset);
14332 if (out_off == (bfd_vma) -1)
14334 else if (out_off == (bfd_vma) -2)
14335 skip = TRUE, relocate = TRUE;
14336 out_off += (input_section->output_section->vma
14337 + input_section->output_offset);
14338 outrel.r_offset = out_off;
14339 outrel.r_addend = rel->r_addend;
14341 /* Optimize unaligned reloc use. */
14342 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14343 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14344 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14345 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14346 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14347 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14348 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14349 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14350 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14353 memset (&outrel, 0, sizeof outrel);
14354 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14356 && r_type != R_PPC64_TOC)
14358 BFD_ASSERT (h->elf.dynindx != -1);
14359 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14363 /* This symbol is local, or marked to become local,
14364 or this is an opd section reloc which must point
14365 at a local function. */
14366 outrel.r_addend += relocation;
14367 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14369 if (is_opd && h != NULL)
14371 /* Lie about opd entries. This case occurs
14372 when building shared libraries and we
14373 reference a function in another shared
14374 lib. The same thing happens for a weak
14375 definition in an application that's
14376 overridden by a strong definition in a
14377 shared lib. (I believe this is a generic
14378 bug in binutils handling of weak syms.)
14379 In these cases we won't use the opd
14380 entry in this lib. */
14381 unresolved_reloc = FALSE;
14384 && r_type == R_PPC64_ADDR64
14386 ? h->elf.type == STT_GNU_IFUNC
14387 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14388 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14391 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14393 /* We need to relocate .opd contents for ld.so.
14394 Prelink also wants simple and consistent rules
14395 for relocs. This make all RELATIVE relocs have
14396 *r_offset equal to r_addend. */
14405 ? h->elf.type == STT_GNU_IFUNC
14406 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14408 info->callbacks->einfo
14409 (_("%P: %H: %s for indirect "
14410 "function `%T' unsupported\n"),
14411 input_bfd, input_section, rel->r_offset,
14412 ppc64_elf_howto_table[r_type]->name,
14416 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14418 else if (sec == NULL || sec->owner == NULL)
14420 bfd_set_error (bfd_error_bad_value);
14427 osec = sec->output_section;
14428 indx = elf_section_data (osec)->dynindx;
14432 if ((osec->flags & SEC_READONLY) == 0
14433 && htab->elf.data_index_section != NULL)
14434 osec = htab->elf.data_index_section;
14436 osec = htab->elf.text_index_section;
14437 indx = elf_section_data (osec)->dynindx;
14439 BFD_ASSERT (indx != 0);
14441 /* We are turning this relocation into one
14442 against a section symbol, so subtract out
14443 the output section's address but not the
14444 offset of the input section in the output
14446 outrel.r_addend -= osec->vma;
14449 outrel.r_info = ELF64_R_INFO (indx, r_type);
14453 sreloc = elf_section_data (input_section)->sreloc;
14455 ? h->elf.type == STT_GNU_IFUNC
14456 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14457 sreloc = htab->elf.irelplt;
14458 if (sreloc == NULL)
14461 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14464 loc = sreloc->contents;
14465 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14466 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14468 /* If this reloc is against an external symbol, it will
14469 be computed at runtime, so there's no need to do
14470 anything now. However, for the sake of prelink ensure
14471 that the section contents are a known value. */
14474 unresolved_reloc = FALSE;
14475 /* The value chosen here is quite arbitrary as ld.so
14476 ignores section contents except for the special
14477 case of .opd where the contents might be accessed
14478 before relocation. Choose zero, as that won't
14479 cause reloc overflow. */
14482 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14483 to improve backward compatibility with older
14485 if (r_type == R_PPC64_ADDR64)
14486 addend = outrel.r_addend;
14487 /* Adjust pc_relative relocs to have zero in *r_offset. */
14488 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14489 addend = (input_section->output_section->vma
14490 + input_section->output_offset
14497 case R_PPC64_GLOB_DAT:
14498 case R_PPC64_JMP_SLOT:
14499 case R_PPC64_JMP_IREL:
14500 case R_PPC64_RELATIVE:
14501 /* We shouldn't ever see these dynamic relocs in relocatable
14503 /* Fall through. */
14505 case R_PPC64_PLTGOT16:
14506 case R_PPC64_PLTGOT16_DS:
14507 case R_PPC64_PLTGOT16_HA:
14508 case R_PPC64_PLTGOT16_HI:
14509 case R_PPC64_PLTGOT16_LO:
14510 case R_PPC64_PLTGOT16_LO_DS:
14511 case R_PPC64_PLTREL32:
14512 case R_PPC64_PLTREL64:
14513 /* These ones haven't been implemented yet. */
14515 info->callbacks->einfo
14516 (_("%P: %B: %s is not supported for `%T'\n"),
14518 ppc64_elf_howto_table[r_type]->name, sym_name);
14520 bfd_set_error (bfd_error_invalid_operation);
14525 /* Multi-instruction sequences that access the TOC can be
14526 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14527 to nop; addi rb,r2,x; */
14533 case R_PPC64_GOT_TLSLD16_HI:
14534 case R_PPC64_GOT_TLSGD16_HI:
14535 case R_PPC64_GOT_TPREL16_HI:
14536 case R_PPC64_GOT_DTPREL16_HI:
14537 case R_PPC64_GOT16_HI:
14538 case R_PPC64_TOC16_HI:
14539 /* These relocs would only be useful if building up an
14540 offset to later add to r2, perhaps in an indexed
14541 addressing mode instruction. Don't try to optimize.
14542 Unfortunately, the possibility of someone building up an
14543 offset like this or even with the HA relocs, means that
14544 we need to check the high insn when optimizing the low
14548 case R_PPC64_GOT_TLSLD16_HA:
14549 case R_PPC64_GOT_TLSGD16_HA:
14550 case R_PPC64_GOT_TPREL16_HA:
14551 case R_PPC64_GOT_DTPREL16_HA:
14552 case R_PPC64_GOT16_HA:
14553 case R_PPC64_TOC16_HA:
14554 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14555 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14557 bfd_byte *p = contents + (rel->r_offset & ~3);
14558 bfd_put_32 (input_bfd, NOP, p);
14562 case R_PPC64_GOT_TLSLD16_LO:
14563 case R_PPC64_GOT_TLSGD16_LO:
14564 case R_PPC64_GOT_TPREL16_LO_DS:
14565 case R_PPC64_GOT_DTPREL16_LO_DS:
14566 case R_PPC64_GOT16_LO:
14567 case R_PPC64_GOT16_LO_DS:
14568 case R_PPC64_TOC16_LO:
14569 case R_PPC64_TOC16_LO_DS:
14570 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14571 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14573 bfd_byte *p = contents + (rel->r_offset & ~3);
14574 insn = bfd_get_32 (input_bfd, p);
14575 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14577 /* Transform addic to addi when we change reg. */
14578 insn &= ~((0x3f << 26) | (0x1f << 16));
14579 insn |= (14u << 26) | (2 << 16);
14583 insn &= ~(0x1f << 16);
14586 bfd_put_32 (input_bfd, insn, p);
14591 /* Do any further special processing. */
14592 howto = ppc64_elf_howto_table[(int) r_type];
14598 case R_PPC64_REL16_HA:
14599 case R_PPC64_ADDR16_HA:
14600 case R_PPC64_ADDR16_HIGHA:
14601 case R_PPC64_ADDR16_HIGHERA:
14602 case R_PPC64_ADDR16_HIGHESTA:
14603 case R_PPC64_TOC16_HA:
14604 case R_PPC64_SECTOFF_HA:
14605 case R_PPC64_TPREL16_HA:
14606 case R_PPC64_TPREL16_HIGHA:
14607 case R_PPC64_TPREL16_HIGHERA:
14608 case R_PPC64_TPREL16_HIGHESTA:
14609 case R_PPC64_DTPREL16_HA:
14610 case R_PPC64_DTPREL16_HIGHA:
14611 case R_PPC64_DTPREL16_HIGHERA:
14612 case R_PPC64_DTPREL16_HIGHESTA:
14613 /* It's just possible that this symbol is a weak symbol
14614 that's not actually defined anywhere. In that case,
14615 'sec' would be NULL, and we should leave the symbol
14616 alone (it will be set to zero elsewhere in the link). */
14621 case R_PPC64_GOT16_HA:
14622 case R_PPC64_PLTGOT16_HA:
14623 case R_PPC64_PLT16_HA:
14624 case R_PPC64_GOT_TLSGD16_HA:
14625 case R_PPC64_GOT_TLSLD16_HA:
14626 case R_PPC64_GOT_TPREL16_HA:
14627 case R_PPC64_GOT_DTPREL16_HA:
14628 /* Add 0x10000 if sign bit in 0:15 is set.
14629 Bits 0:15 are not used. */
14633 case R_PPC64_ADDR16_DS:
14634 case R_PPC64_ADDR16_LO_DS:
14635 case R_PPC64_GOT16_DS:
14636 case R_PPC64_GOT16_LO_DS:
14637 case R_PPC64_PLT16_LO_DS:
14638 case R_PPC64_SECTOFF_DS:
14639 case R_PPC64_SECTOFF_LO_DS:
14640 case R_PPC64_TOC16_DS:
14641 case R_PPC64_TOC16_LO_DS:
14642 case R_PPC64_PLTGOT16_DS:
14643 case R_PPC64_PLTGOT16_LO_DS:
14644 case R_PPC64_GOT_TPREL16_DS:
14645 case R_PPC64_GOT_TPREL16_LO_DS:
14646 case R_PPC64_GOT_DTPREL16_DS:
14647 case R_PPC64_GOT_DTPREL16_LO_DS:
14648 case R_PPC64_TPREL16_DS:
14649 case R_PPC64_TPREL16_LO_DS:
14650 case R_PPC64_DTPREL16_DS:
14651 case R_PPC64_DTPREL16_LO_DS:
14652 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14654 /* If this reloc is against an lq insn, then the value must be
14655 a multiple of 16. This is somewhat of a hack, but the
14656 "correct" way to do this by defining _DQ forms of all the
14657 _DS relocs bloats all reloc switches in this file. It
14658 doesn't seem to make much sense to use any of these relocs
14659 in data, so testing the insn should be safe. */
14660 if ((insn & (0x3f << 26)) == (56u << 26))
14662 if (((relocation + addend) & mask) != 0)
14664 info->callbacks->einfo
14665 (_("%P: %H: error: %s not a multiple of %u\n"),
14666 input_bfd, input_section, rel->r_offset,
14669 bfd_set_error (bfd_error_bad_value);
14676 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14677 because such sections are not SEC_ALLOC and thus ld.so will
14678 not process them. */
14679 if (unresolved_reloc
14680 && !((input_section->flags & SEC_DEBUGGING) != 0
14681 && h->elf.def_dynamic)
14682 && _bfd_elf_section_offset (output_bfd, info, input_section,
14683 rel->r_offset) != (bfd_vma) -1)
14685 info->callbacks->einfo
14686 (_("%P: %H: unresolvable %s against `%T'\n"),
14687 input_bfd, input_section, rel->r_offset,
14689 h->elf.root.root.string);
14693 /* 16-bit fields in insns mostly have signed values, but a
14694 few insns have 16-bit unsigned values. Really, we should
14695 have different reloc types. */
14696 if (howto->complain_on_overflow != complain_overflow_dont
14697 && howto->dst_mask == 0xffff
14698 && (input_section->flags & SEC_CODE) != 0)
14700 enum complain_overflow complain = complain_overflow_signed;
14702 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14703 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14704 complain = complain_overflow_bitfield;
14705 else if (howto->rightshift == 0
14706 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14707 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14708 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14709 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14710 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14711 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14712 complain = complain_overflow_unsigned;
14713 if (howto->complain_on_overflow != complain)
14715 alt_howto = *howto;
14716 alt_howto.complain_on_overflow = complain;
14717 howto = &alt_howto;
14721 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14722 rel->r_offset, relocation, addend);
14724 if (r != bfd_reloc_ok)
14726 char *more_info = NULL;
14727 const char *reloc_name = howto->name;
14729 if (reloc_dest != DEST_NORMAL)
14731 more_info = bfd_malloc (strlen (reloc_name) + 8);
14732 if (more_info != NULL)
14734 strcpy (more_info, reloc_name);
14735 strcat (more_info, (reloc_dest == DEST_OPD
14736 ? " (OPD)" : " (stub)"));
14737 reloc_name = more_info;
14741 if (r == bfd_reloc_overflow)
14746 && h->elf.root.type == bfd_link_hash_undefweak
14747 && howto->pc_relative)
14749 /* Assume this is a call protected by other code that
14750 detects the symbol is undefined. If this is the case,
14751 we can safely ignore the overflow. If not, the
14752 program is hosed anyway, and a little warning isn't
14758 if (!((*info->callbacks->reloc_overflow)
14759 (info, &h->elf.root, sym_name,
14760 reloc_name, orig_rel.r_addend,
14761 input_bfd, input_section, rel->r_offset)))
14766 info->callbacks->einfo
14767 (_("%P: %H: %s against `%T': error %d\n"),
14768 input_bfd, input_section, rel->r_offset,
14769 reloc_name, sym_name, (int) r);
14772 if (more_info != NULL)
14777 /* If we're emitting relocations, then shortly after this function
14778 returns, reloc offsets and addends for this section will be
14779 adjusted. Worse, reloc symbol indices will be for the output
14780 file rather than the input. Save a copy of the relocs for
14781 opd_entry_value. */
14782 if (is_opd && (info->emitrelocations || info->relocatable))
14785 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14786 rel = bfd_alloc (input_bfd, amt);
14787 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14788 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14791 memcpy (rel, relocs, amt);
14796 /* Adjust the value of any local symbols in opd sections. */
14799 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14800 const char *name ATTRIBUTE_UNUSED,
14801 Elf_Internal_Sym *elfsym,
14802 asection *input_sec,
14803 struct elf_link_hash_entry *h)
14805 struct _opd_sec_data *opd;
14812 opd = get_opd_info (input_sec);
14813 if (opd == NULL || opd->adjust == NULL)
14816 value = elfsym->st_value - input_sec->output_offset;
14817 if (!info->relocatable)
14818 value -= input_sec->output_section->vma;
14820 adjust = opd->adjust[value / 8];
14824 elfsym->st_value += adjust;
14828 /* Finish up dynamic symbol handling. We set the contents of various
14829 dynamic sections here. */
14832 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14833 struct bfd_link_info *info,
14834 struct elf_link_hash_entry *h,
14835 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14837 struct ppc_link_hash_table *htab;
14838 struct plt_entry *ent;
14839 Elf_Internal_Rela rela;
14842 htab = ppc_hash_table (info);
14846 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14847 if (ent->plt.offset != (bfd_vma) -1)
14849 /* This symbol has an entry in the procedure linkage
14850 table. Set it up. */
14851 if (!htab->elf.dynamic_sections_created
14852 || h->dynindx == -1)
14854 BFD_ASSERT (h->type == STT_GNU_IFUNC
14856 && (h->root.type == bfd_link_hash_defined
14857 || h->root.type == bfd_link_hash_defweak));
14858 rela.r_offset = (htab->elf.iplt->output_section->vma
14859 + htab->elf.iplt->output_offset
14860 + ent->plt.offset);
14862 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14864 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14865 rela.r_addend = (h->root.u.def.value
14866 + h->root.u.def.section->output_offset
14867 + h->root.u.def.section->output_section->vma
14869 loc = (htab->elf.irelplt->contents
14870 + (htab->elf.irelplt->reloc_count++
14871 * sizeof (Elf64_External_Rela)));
14875 rela.r_offset = (htab->elf.splt->output_section->vma
14876 + htab->elf.splt->output_offset
14877 + ent->plt.offset);
14878 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14879 rela.r_addend = ent->addend;
14880 loc = (htab->elf.srelplt->contents
14881 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14882 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14884 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14886 if (!htab->opd_abi)
14888 if (!h->def_regular)
14890 /* Mark the symbol as undefined, rather than as
14891 defined in glink. Leave the value if there were
14892 any relocations where pointer equality matters
14893 (this is a clue for the dynamic linker, to make
14894 function pointer comparisons work between an
14895 application and shared library), otherwise set it
14897 sym->st_shndx = SHN_UNDEF;
14898 if (!h->pointer_equality_needed)
14900 else if (!h->ref_regular_nonweak)
14902 /* This breaks function pointer comparisons, but
14903 that is better than breaking tests for a NULL
14904 function pointer. */
14913 /* This symbol needs a copy reloc. Set it up. */
14915 if (h->dynindx == -1
14916 || (h->root.type != bfd_link_hash_defined
14917 && h->root.type != bfd_link_hash_defweak)
14918 || htab->relbss == NULL)
14921 rela.r_offset = (h->root.u.def.value
14922 + h->root.u.def.section->output_section->vma
14923 + h->root.u.def.section->output_offset);
14924 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14926 loc = htab->relbss->contents;
14927 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14928 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14934 /* Used to decide how to sort relocs in an optimal manner for the
14935 dynamic linker, before writing them out. */
14937 static enum elf_reloc_type_class
14938 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14939 const asection *rel_sec,
14940 const Elf_Internal_Rela *rela)
14942 enum elf_ppc64_reloc_type r_type;
14943 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14945 if (rel_sec == htab->elf.irelplt)
14946 return reloc_class_ifunc;
14948 r_type = ELF64_R_TYPE (rela->r_info);
14951 case R_PPC64_RELATIVE:
14952 return reloc_class_relative;
14953 case R_PPC64_JMP_SLOT:
14954 return reloc_class_plt;
14956 return reloc_class_copy;
14958 return reloc_class_normal;
14962 /* Finish up the dynamic sections. */
14965 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14966 struct bfd_link_info *info)
14968 struct ppc_link_hash_table *htab;
14972 htab = ppc_hash_table (info);
14976 dynobj = htab->elf.dynobj;
14977 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14979 if (htab->elf.dynamic_sections_created)
14981 Elf64_External_Dyn *dyncon, *dynconend;
14983 if (sdyn == NULL || htab->elf.sgot == NULL)
14986 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14987 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14988 for (; dyncon < dynconend; dyncon++)
14990 Elf_Internal_Dyn dyn;
14993 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15000 case DT_PPC64_GLINK:
15002 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15003 /* We stupidly defined DT_PPC64_GLINK to be the start
15004 of glink rather than the first entry point, which is
15005 what ld.so needs, and now have a bigger stub to
15006 support automatic multiple TOCs. */
15007 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15011 s = bfd_get_section_by_name (output_bfd, ".opd");
15014 dyn.d_un.d_ptr = s->vma;
15018 if (htab->do_multi_toc && htab->multi_toc_needed)
15019 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15022 case DT_PPC64_OPDSZ:
15023 s = bfd_get_section_by_name (output_bfd, ".opd");
15026 dyn.d_un.d_val = s->size;
15030 s = htab->elf.splt;
15031 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15035 s = htab->elf.srelplt;
15036 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15040 dyn.d_un.d_val = htab->elf.srelplt->size;
15044 /* Don't count procedure linkage table relocs in the
15045 overall reloc count. */
15046 s = htab->elf.srelplt;
15049 dyn.d_un.d_val -= s->size;
15053 /* We may not be using the standard ELF linker script.
15054 If .rela.plt is the first .rela section, we adjust
15055 DT_RELA to not include it. */
15056 s = htab->elf.srelplt;
15059 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15061 dyn.d_un.d_ptr += s->size;
15065 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15069 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15071 /* Fill in the first entry in the global offset table.
15072 We use it to hold the link-time TOCbase. */
15073 bfd_put_64 (output_bfd,
15074 elf_gp (output_bfd) + TOC_BASE_OFF,
15075 htab->elf.sgot->contents);
15077 /* Set .got entry size. */
15078 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15081 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15083 /* Set .plt entry size. */
15084 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15085 = PLT_ENTRY_SIZE (htab);
15088 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15089 brlt ourselves if emitrelocations. */
15090 if (htab->brlt != NULL
15091 && htab->brlt->reloc_count != 0
15092 && !_bfd_elf_link_output_relocs (output_bfd,
15094 elf_section_data (htab->brlt)->rela.hdr,
15095 elf_section_data (htab->brlt)->relocs,
15099 if (htab->glink != NULL
15100 && htab->glink->reloc_count != 0
15101 && !_bfd_elf_link_output_relocs (output_bfd,
15103 elf_section_data (htab->glink)->rela.hdr,
15104 elf_section_data (htab->glink)->relocs,
15108 if (htab->glink_eh_frame != NULL
15109 && htab->glink_eh_frame->size != 0)
15113 asection *stub_sec;
15115 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15116 for (stub_sec = htab->params->stub_bfd->sections;
15118 stub_sec = stub_sec->next)
15119 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15125 /* Offset to stub section. */
15126 val = (stub_sec->output_section->vma
15127 + stub_sec->output_offset);
15128 val -= (htab->glink_eh_frame->output_section->vma
15129 + htab->glink_eh_frame->output_offset
15130 + (p - htab->glink_eh_frame->contents));
15131 if (val + 0x80000000 > 0xffffffff)
15133 info->callbacks->einfo
15134 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15138 bfd_put_32 (dynobj, val, p);
15140 /* stub section size. */
15142 /* Augmentation. */
15147 if (htab->glink != NULL && htab->glink->size != 0)
15153 /* Offset to .glink. */
15154 val = (htab->glink->output_section->vma
15155 + htab->glink->output_offset
15157 val -= (htab->glink_eh_frame->output_section->vma
15158 + htab->glink_eh_frame->output_offset
15159 + (p - htab->glink_eh_frame->contents));
15160 if (val + 0x80000000 > 0xffffffff)
15162 info->callbacks->einfo
15163 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15164 htab->glink->name);
15167 bfd_put_32 (dynobj, val, p);
15171 /* Augmentation. */
15177 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15178 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15179 htab->glink_eh_frame,
15180 htab->glink_eh_frame->contents))
15184 /* We need to handle writing out multiple GOT sections ourselves,
15185 since we didn't add them to DYNOBJ. We know dynobj is the first
15187 while ((dynobj = dynobj->link.next) != NULL)
15191 if (!is_ppc64_elf (dynobj))
15194 s = ppc64_elf_tdata (dynobj)->got;
15197 && s->output_section != bfd_abs_section_ptr
15198 && !bfd_set_section_contents (output_bfd, s->output_section,
15199 s->contents, s->output_offset,
15202 s = ppc64_elf_tdata (dynobj)->relgot;
15205 && s->output_section != bfd_abs_section_ptr
15206 && !bfd_set_section_contents (output_bfd, s->output_section,
15207 s->contents, s->output_offset,
15215 #include "elf64-target.h"
15217 /* FreeBSD support */
15219 #undef TARGET_LITTLE_SYM
15220 #undef TARGET_LITTLE_NAME
15222 #undef TARGET_BIG_SYM
15223 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15224 #undef TARGET_BIG_NAME
15225 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15228 #define ELF_OSABI ELFOSABI_FREEBSD
15231 #define elf64_bed elf64_powerpc_fbsd_bed
15233 #include "elf64-target.h"