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 ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4811 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 && (ibfd->flags & DYNAMIC) == 0
4813 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4814 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4816 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4817 || ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4819 && strcmp ((*sec)->name, ".opd") == 0)
4820 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4822 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4824 if (abiversion (ibfd) == 0)
4825 set_abiversion (ibfd, 2);
4826 else if (abiversion (ibfd) == 1)
4828 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4829 " for ABI version 1\n"), name);
4830 bfd_set_error (bfd_error_bad_value);
4838 /* Merge non-visibility st_other attributes: local entry point. */
4841 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4842 const Elf_Internal_Sym *isym,
4843 bfd_boolean definition,
4844 bfd_boolean dynamic)
4846 if (definition && !dynamic)
4847 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4848 | ELF_ST_VISIBILITY (h->other));
4851 /* This function makes an old ABI object reference to ".bar" cause the
4852 inclusion of a new ABI object archive that defines "bar".
4853 NAME is a symbol defined in an archive. Return a symbol in the hash
4854 table that might be satisfied by the archive symbols. */
4856 static struct elf_link_hash_entry *
4857 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4858 struct bfd_link_info *info,
4861 struct elf_link_hash_entry *h;
4865 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4867 /* Don't return this sym if it is a fake function descriptor
4868 created by add_symbol_adjust. */
4869 && !(h->root.type == bfd_link_hash_undefweak
4870 && ((struct ppc_link_hash_entry *) h)->fake))
4876 len = strlen (name);
4877 dot_name = bfd_alloc (abfd, len + 2);
4878 if (dot_name == NULL)
4879 return (struct elf_link_hash_entry *) 0 - 1;
4881 memcpy (dot_name + 1, name, len + 1);
4882 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4883 bfd_release (abfd, dot_name);
4887 /* This function satisfies all old ABI object references to ".bar" if a
4888 new ABI object defines "bar". Well, at least, undefined dot symbols
4889 are made weak. This stops later archive searches from including an
4890 object if we already have a function descriptor definition. It also
4891 prevents the linker complaining about undefined symbols.
4892 We also check and correct mismatched symbol visibility here. The
4893 most restrictive visibility of the function descriptor and the
4894 function entry symbol is used. */
4897 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4899 struct ppc_link_hash_table *htab;
4900 struct ppc_link_hash_entry *fdh;
4902 if (eh->elf.root.type == bfd_link_hash_indirect)
4905 if (eh->elf.root.type == bfd_link_hash_warning)
4906 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4908 if (eh->elf.root.root.string[0] != '.')
4911 htab = ppc_hash_table (info);
4915 fdh = lookup_fdh (eh, htab);
4918 if (!info->relocatable
4919 && (eh->elf.root.type == bfd_link_hash_undefined
4920 || eh->elf.root.type == bfd_link_hash_undefweak)
4921 && eh->elf.ref_regular)
4923 /* Make an undefweak function descriptor sym, which is enough to
4924 pull in an --as-needed shared lib, but won't cause link
4925 errors. Archives are handled elsewhere. */
4926 fdh = make_fdh (info, eh);
4929 fdh->elf.ref_regular = 1;
4934 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4935 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4936 if (entry_vis < descr_vis)
4937 fdh->elf.other += entry_vis - descr_vis;
4938 else if (entry_vis > descr_vis)
4939 eh->elf.other += descr_vis - entry_vis;
4941 if ((fdh->elf.root.type == bfd_link_hash_defined
4942 || fdh->elf.root.type == bfd_link_hash_defweak)
4943 && eh->elf.root.type == bfd_link_hash_undefined)
4945 eh->elf.root.type = bfd_link_hash_undefweak;
4946 eh->was_undefined = 1;
4947 htab->twiddled_syms = 1;
4954 /* Set up opd section info and abiversion for IBFD, and process list
4955 of dot-symbols we made in link_hash_newfunc. */
4958 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
4960 struct ppc_link_hash_table *htab;
4961 struct ppc_link_hash_entry **p, *eh;
4962 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4964 if (opd != NULL && opd->size != 0)
4966 if (abiversion (ibfd) == 0)
4967 set_abiversion (ibfd, 1);
4968 else if (abiversion (ibfd) == 2)
4970 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4972 ibfd, abiversion (ibfd));
4973 bfd_set_error (bfd_error_bad_value);
4977 if ((ibfd->flags & DYNAMIC) == 0
4978 && (opd->flags & SEC_RELOC) != 0
4979 && opd->reloc_count != 0
4980 && !bfd_is_abs_section (opd->output_section))
4982 /* Garbage collection needs some extra help with .opd sections.
4983 We don't want to necessarily keep everything referenced by
4984 relocs in .opd, as that would keep all functions. Instead,
4985 if we reference an .opd symbol (a function descriptor), we
4986 want to keep the function code symbol's section. This is
4987 easy for global symbols, but for local syms we need to keep
4988 information about the associated function section. */
4990 asection **opd_sym_map;
4992 amt = opd->size * sizeof (*opd_sym_map) / 8;
4993 opd_sym_map = bfd_zalloc (ibfd, amt);
4994 if (opd_sym_map == NULL)
4996 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
4997 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
4998 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5002 if (!is_ppc64_elf (info->output_bfd))
5004 htab = ppc_hash_table (info);
5008 /* For input files without an explicit abiversion in e_flags
5009 we should have flagged any with symbol st_other bits set
5010 as ELFv1 and above flagged those with .opd as ELFv2.
5011 Set the output abiversion if not yet set, and for any input
5012 still ambiguous, take its abiversion from the output.
5013 Differences in ABI are reported later. */
5014 if (abiversion (info->output_bfd) == 0)
5015 set_abiversion (info->output_bfd, abiversion (ibfd));
5016 else if (abiversion (ibfd) == 0)
5017 set_abiversion (ibfd, abiversion (info->output_bfd));
5019 p = &htab->dot_syms;
5020 while ((eh = *p) != NULL)
5023 if (&eh->elf == htab->elf.hgot)
5025 else if (htab->elf.hgot == NULL
5026 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5027 htab->elf.hgot = &eh->elf;
5028 else if (!add_symbol_adjust (eh, info))
5030 p = &eh->u.next_dot_sym;
5033 /* Clear the list for non-ppc64 input files. */
5034 p = &htab->dot_syms;
5035 while ((eh = *p) != NULL)
5038 p = &eh->u.next_dot_sym;
5041 /* We need to fix the undefs list for any syms we have twiddled to
5043 if (htab->twiddled_syms)
5045 bfd_link_repair_undef_list (&htab->elf.root);
5046 htab->twiddled_syms = 0;
5051 /* Undo hash table changes when an --as-needed input file is determined
5052 not to be needed. */
5055 ppc64_elf_notice_as_needed (bfd *ibfd,
5056 struct bfd_link_info *info,
5057 enum notice_asneeded_action act)
5059 if (act == notice_not_needed)
5061 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5066 htab->dot_syms = NULL;
5068 return _bfd_elf_notice_as_needed (ibfd, info, act);
5071 /* If --just-symbols against a final linked binary, then assume we need
5072 toc adjusting stubs when calling functions defined there. */
5075 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5077 if ((sec->flags & SEC_CODE) != 0
5078 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5079 && is_ppc64_elf (sec->owner))
5081 if (abiversion (sec->owner) >= 2
5082 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5083 sec->has_toc_reloc = 1;
5085 _bfd_elf_link_just_syms (sec, info);
5088 static struct plt_entry **
5089 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5090 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5092 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5093 struct plt_entry **local_plt;
5094 unsigned char *local_got_tls_masks;
5096 if (local_got_ents == NULL)
5098 bfd_size_type size = symtab_hdr->sh_info;
5100 size *= (sizeof (*local_got_ents)
5101 + sizeof (*local_plt)
5102 + sizeof (*local_got_tls_masks));
5103 local_got_ents = bfd_zalloc (abfd, size);
5104 if (local_got_ents == NULL)
5106 elf_local_got_ents (abfd) = local_got_ents;
5109 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5111 struct got_entry *ent;
5113 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5114 if (ent->addend == r_addend
5115 && ent->owner == abfd
5116 && ent->tls_type == tls_type)
5120 bfd_size_type amt = sizeof (*ent);
5121 ent = bfd_alloc (abfd, amt);
5124 ent->next = local_got_ents[r_symndx];
5125 ent->addend = r_addend;
5127 ent->tls_type = tls_type;
5128 ent->is_indirect = FALSE;
5129 ent->got.refcount = 0;
5130 local_got_ents[r_symndx] = ent;
5132 ent->got.refcount += 1;
5135 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5136 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5137 local_got_tls_masks[r_symndx] |= tls_type;
5139 return local_plt + r_symndx;
5143 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5145 struct plt_entry *ent;
5147 for (ent = *plist; ent != NULL; ent = ent->next)
5148 if (ent->addend == addend)
5152 bfd_size_type amt = sizeof (*ent);
5153 ent = bfd_alloc (abfd, amt);
5157 ent->addend = addend;
5158 ent->plt.refcount = 0;
5161 ent->plt.refcount += 1;
5166 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5168 return (r_type == R_PPC64_REL24
5169 || r_type == R_PPC64_REL14
5170 || r_type == R_PPC64_REL14_BRTAKEN
5171 || r_type == R_PPC64_REL14_BRNTAKEN
5172 || r_type == R_PPC64_ADDR24
5173 || r_type == R_PPC64_ADDR14
5174 || r_type == R_PPC64_ADDR14_BRTAKEN
5175 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5178 /* Look through the relocs for a section during the first phase, and
5179 calculate needed space in the global offset table, procedure
5180 linkage table, and dynamic reloc sections. */
5183 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5184 asection *sec, const Elf_Internal_Rela *relocs)
5186 struct ppc_link_hash_table *htab;
5187 Elf_Internal_Shdr *symtab_hdr;
5188 struct elf_link_hash_entry **sym_hashes;
5189 const Elf_Internal_Rela *rel;
5190 const Elf_Internal_Rela *rel_end;
5192 asection **opd_sym_map;
5193 struct elf_link_hash_entry *tga, *dottga;
5195 if (info->relocatable)
5198 /* Don't do anything special with non-loaded, non-alloced sections.
5199 In particular, any relocs in such sections should not affect GOT
5200 and PLT reference counting (ie. we don't allow them to create GOT
5201 or PLT entries), there's no possibility or desire to optimize TLS
5202 relocs, and there's not much point in propagating relocs to shared
5203 libs that the dynamic linker won't relocate. */
5204 if ((sec->flags & SEC_ALLOC) == 0)
5207 BFD_ASSERT (is_ppc64_elf (abfd));
5209 htab = ppc_hash_table (info);
5213 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5214 FALSE, FALSE, TRUE);
5215 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5216 FALSE, FALSE, TRUE);
5217 symtab_hdr = &elf_symtab_hdr (abfd);
5218 sym_hashes = elf_sym_hashes (abfd);
5221 if (ppc64_elf_section_data (sec) != NULL
5222 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5223 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5225 rel_end = relocs + sec->reloc_count;
5226 for (rel = relocs; rel < rel_end; rel++)
5228 unsigned long r_symndx;
5229 struct elf_link_hash_entry *h;
5230 enum elf_ppc64_reloc_type r_type;
5232 struct _ppc64_elf_section_data *ppc64_sec;
5233 struct plt_entry **ifunc;
5235 r_symndx = ELF64_R_SYM (rel->r_info);
5236 if (r_symndx < symtab_hdr->sh_info)
5240 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5241 h = elf_follow_link (h);
5243 /* PR15323, ref flags aren't set for references in the same
5245 h->root.non_ir_ref = 1;
5247 if (h == htab->elf.hgot)
5248 sec->has_toc_reloc = 1;
5255 if (h->type == STT_GNU_IFUNC)
5258 ifunc = &h->plt.plist;
5263 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5268 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5270 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5271 rel->r_addend, PLT_IFUNC);
5276 r_type = ELF64_R_TYPE (rel->r_info);
5277 if (is_branch_reloc (r_type))
5279 if (h != NULL && (h == tga || h == dottga))
5282 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5283 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5284 /* We have a new-style __tls_get_addr call with a marker
5288 /* Mark this section as having an old-style call. */
5289 sec->has_tls_get_addr_call = 1;
5292 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5294 && !update_plt_info (abfd, ifunc, rel->r_addend))
5302 /* These special tls relocs tie a call to __tls_get_addr with
5303 its parameter symbol. */
5306 case R_PPC64_GOT_TLSLD16:
5307 case R_PPC64_GOT_TLSLD16_LO:
5308 case R_PPC64_GOT_TLSLD16_HI:
5309 case R_PPC64_GOT_TLSLD16_HA:
5310 tls_type = TLS_TLS | TLS_LD;
5313 case R_PPC64_GOT_TLSGD16:
5314 case R_PPC64_GOT_TLSGD16_LO:
5315 case R_PPC64_GOT_TLSGD16_HI:
5316 case R_PPC64_GOT_TLSGD16_HA:
5317 tls_type = TLS_TLS | TLS_GD;
5320 case R_PPC64_GOT_TPREL16_DS:
5321 case R_PPC64_GOT_TPREL16_LO_DS:
5322 case R_PPC64_GOT_TPREL16_HI:
5323 case R_PPC64_GOT_TPREL16_HA:
5325 info->flags |= DF_STATIC_TLS;
5326 tls_type = TLS_TLS | TLS_TPREL;
5329 case R_PPC64_GOT_DTPREL16_DS:
5330 case R_PPC64_GOT_DTPREL16_LO_DS:
5331 case R_PPC64_GOT_DTPREL16_HI:
5332 case R_PPC64_GOT_DTPREL16_HA:
5333 tls_type = TLS_TLS | TLS_DTPREL;
5335 sec->has_tls_reloc = 1;
5339 case R_PPC64_GOT16_DS:
5340 case R_PPC64_GOT16_HA:
5341 case R_PPC64_GOT16_HI:
5342 case R_PPC64_GOT16_LO:
5343 case R_PPC64_GOT16_LO_DS:
5344 /* This symbol requires a global offset table entry. */
5345 sec->has_toc_reloc = 1;
5346 if (r_type == R_PPC64_GOT_TLSLD16
5347 || r_type == R_PPC64_GOT_TLSGD16
5348 || r_type == R_PPC64_GOT_TPREL16_DS
5349 || r_type == R_PPC64_GOT_DTPREL16_DS
5350 || r_type == R_PPC64_GOT16
5351 || r_type == R_PPC64_GOT16_DS)
5353 htab->do_multi_toc = 1;
5354 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5357 if (ppc64_elf_tdata (abfd)->got == NULL
5358 && !create_got_section (abfd, info))
5363 struct ppc_link_hash_entry *eh;
5364 struct got_entry *ent;
5366 eh = (struct ppc_link_hash_entry *) h;
5367 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5368 if (ent->addend == rel->r_addend
5369 && ent->owner == abfd
5370 && ent->tls_type == tls_type)
5374 bfd_size_type amt = sizeof (*ent);
5375 ent = bfd_alloc (abfd, amt);
5378 ent->next = eh->elf.got.glist;
5379 ent->addend = rel->r_addend;
5381 ent->tls_type = tls_type;
5382 ent->is_indirect = FALSE;
5383 ent->got.refcount = 0;
5384 eh->elf.got.glist = ent;
5386 ent->got.refcount += 1;
5387 eh->tls_mask |= tls_type;
5390 /* This is a global offset table entry for a local symbol. */
5391 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5392 rel->r_addend, tls_type))
5395 /* We may also need a plt entry if the symbol turns out to be
5397 if (h != NULL && !info->shared && abiversion (abfd) != 1)
5399 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5404 case R_PPC64_PLT16_HA:
5405 case R_PPC64_PLT16_HI:
5406 case R_PPC64_PLT16_LO:
5409 /* This symbol requires a procedure linkage table entry. We
5410 actually build the entry in adjust_dynamic_symbol,
5411 because this might be a case of linking PIC code without
5412 linking in any dynamic objects, in which case we don't
5413 need to generate a procedure linkage table after all. */
5416 /* It does not make sense to have a procedure linkage
5417 table entry for a local symbol. */
5418 bfd_set_error (bfd_error_bad_value);
5423 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5426 if (h->root.root.string[0] == '.'
5427 && h->root.root.string[1] != '\0')
5428 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5432 /* The following relocations don't need to propagate the
5433 relocation if linking a shared object since they are
5434 section relative. */
5435 case R_PPC64_SECTOFF:
5436 case R_PPC64_SECTOFF_LO:
5437 case R_PPC64_SECTOFF_HI:
5438 case R_PPC64_SECTOFF_HA:
5439 case R_PPC64_SECTOFF_DS:
5440 case R_PPC64_SECTOFF_LO_DS:
5441 case R_PPC64_DTPREL16:
5442 case R_PPC64_DTPREL16_LO:
5443 case R_PPC64_DTPREL16_HI:
5444 case R_PPC64_DTPREL16_HA:
5445 case R_PPC64_DTPREL16_DS:
5446 case R_PPC64_DTPREL16_LO_DS:
5447 case R_PPC64_DTPREL16_HIGH:
5448 case R_PPC64_DTPREL16_HIGHA:
5449 case R_PPC64_DTPREL16_HIGHER:
5450 case R_PPC64_DTPREL16_HIGHERA:
5451 case R_PPC64_DTPREL16_HIGHEST:
5452 case R_PPC64_DTPREL16_HIGHESTA:
5457 case R_PPC64_REL16_LO:
5458 case R_PPC64_REL16_HI:
5459 case R_PPC64_REL16_HA:
5462 /* Not supported as a dynamic relocation. */
5463 case R_PPC64_ADDR64_LOCAL:
5466 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5468 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5469 "in shared libraries and PIEs.\n"),
5470 abfd, sec, rel->r_offset,
5471 ppc64_elf_howto_table[r_type]->name);
5472 bfd_set_error (bfd_error_bad_value);
5478 case R_PPC64_TOC16_DS:
5479 htab->do_multi_toc = 1;
5480 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5481 case R_PPC64_TOC16_LO:
5482 case R_PPC64_TOC16_HI:
5483 case R_PPC64_TOC16_HA:
5484 case R_PPC64_TOC16_LO_DS:
5485 sec->has_toc_reloc = 1;
5488 /* This relocation describes the C++ object vtable hierarchy.
5489 Reconstruct it for later use during GC. */
5490 case R_PPC64_GNU_VTINHERIT:
5491 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5495 /* This relocation describes which C++ vtable entries are actually
5496 used. Record for later use during GC. */
5497 case R_PPC64_GNU_VTENTRY:
5498 BFD_ASSERT (h != NULL);
5500 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5505 case R_PPC64_REL14_BRTAKEN:
5506 case R_PPC64_REL14_BRNTAKEN:
5508 asection *dest = NULL;
5510 /* Heuristic: If jumping outside our section, chances are
5511 we are going to need a stub. */
5514 /* If the sym is weak it may be overridden later, so
5515 don't assume we know where a weak sym lives. */
5516 if (h->root.type == bfd_link_hash_defined)
5517 dest = h->root.u.def.section;
5521 Elf_Internal_Sym *isym;
5523 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5528 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5532 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5537 if (h != NULL && ifunc == NULL)
5539 /* We may need a .plt entry if the function this reloc
5540 refers to is in a shared lib. */
5541 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5544 if (h->root.root.string[0] == '.'
5545 && h->root.root.string[1] != '\0')
5546 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5547 if (h == tga || h == dottga)
5548 sec->has_tls_reloc = 1;
5552 case R_PPC64_TPREL64:
5553 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5555 info->flags |= DF_STATIC_TLS;
5558 case R_PPC64_DTPMOD64:
5559 if (rel + 1 < rel_end
5560 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5561 && rel[1].r_offset == rel->r_offset + 8)
5562 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5564 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5567 case R_PPC64_DTPREL64:
5568 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5570 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5571 && rel[-1].r_offset == rel->r_offset - 8)
5572 /* This is the second reloc of a dtpmod, dtprel pair.
5573 Don't mark with TLS_DTPREL. */
5577 sec->has_tls_reloc = 1;
5580 struct ppc_link_hash_entry *eh;
5581 eh = (struct ppc_link_hash_entry *) h;
5582 eh->tls_mask |= tls_type;
5585 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5586 rel->r_addend, tls_type))
5589 ppc64_sec = ppc64_elf_section_data (sec);
5590 if (ppc64_sec->sec_type != sec_toc)
5594 /* One extra to simplify get_tls_mask. */
5595 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5596 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5597 if (ppc64_sec->u.toc.symndx == NULL)
5599 amt = sec->size * sizeof (bfd_vma) / 8;
5600 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5601 if (ppc64_sec->u.toc.add == NULL)
5603 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5604 ppc64_sec->sec_type = sec_toc;
5606 BFD_ASSERT (rel->r_offset % 8 == 0);
5607 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5608 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5610 /* Mark the second slot of a GD or LD entry.
5611 -1 to indicate GD and -2 to indicate LD. */
5612 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5613 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5614 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5615 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5618 case R_PPC64_TPREL16:
5619 case R_PPC64_TPREL16_LO:
5620 case R_PPC64_TPREL16_HI:
5621 case R_PPC64_TPREL16_HA:
5622 case R_PPC64_TPREL16_DS:
5623 case R_PPC64_TPREL16_LO_DS:
5624 case R_PPC64_TPREL16_HIGH:
5625 case R_PPC64_TPREL16_HIGHA:
5626 case R_PPC64_TPREL16_HIGHER:
5627 case R_PPC64_TPREL16_HIGHERA:
5628 case R_PPC64_TPREL16_HIGHEST:
5629 case R_PPC64_TPREL16_HIGHESTA:
5632 info->flags |= DF_STATIC_TLS;
5637 case R_PPC64_ADDR64:
5638 if (opd_sym_map != NULL
5639 && rel + 1 < rel_end
5640 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5644 if (h->root.root.string[0] == '.'
5645 && h->root.root.string[1] != 0
5646 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5649 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5654 Elf_Internal_Sym *isym;
5656 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5661 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5662 if (s != NULL && s != sec)
5663 opd_sym_map[rel->r_offset / 8] = s;
5668 case R_PPC64_ADDR16:
5669 case R_PPC64_ADDR16_DS:
5670 case R_PPC64_ADDR16_HA:
5671 case R_PPC64_ADDR16_HI:
5672 case R_PPC64_ADDR16_HIGH:
5673 case R_PPC64_ADDR16_HIGHA:
5674 case R_PPC64_ADDR16_HIGHER:
5675 case R_PPC64_ADDR16_HIGHERA:
5676 case R_PPC64_ADDR16_HIGHEST:
5677 case R_PPC64_ADDR16_HIGHESTA:
5678 case R_PPC64_ADDR16_LO:
5679 case R_PPC64_ADDR16_LO_DS:
5680 if (h != NULL && !info->shared && abiversion (abfd) != 1
5681 && rel->r_addend == 0)
5683 /* We may need a .plt entry if this reloc refers to a
5684 function in a shared lib. */
5685 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5687 h->pointer_equality_needed = 1;
5694 case R_PPC64_ADDR14:
5695 case R_PPC64_ADDR14_BRNTAKEN:
5696 case R_PPC64_ADDR14_BRTAKEN:
5697 case R_PPC64_ADDR24:
5698 case R_PPC64_ADDR32:
5699 case R_PPC64_UADDR16:
5700 case R_PPC64_UADDR32:
5701 case R_PPC64_UADDR64:
5703 if (h != NULL && !info->shared)
5704 /* We may need a copy reloc. */
5707 /* Don't propagate .opd relocs. */
5708 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5711 /* If we are creating a shared library, and this is a reloc
5712 against a global symbol, or a non PC relative reloc
5713 against a local symbol, then we need to copy the reloc
5714 into the shared library. However, if we are linking with
5715 -Bsymbolic, we do not need to copy a reloc against a
5716 global symbol which is defined in an object we are
5717 including in the link (i.e., DEF_REGULAR is set). At
5718 this point we have not seen all the input files, so it is
5719 possible that DEF_REGULAR is not set now but will be set
5720 later (it is never cleared). In case of a weak definition,
5721 DEF_REGULAR may be cleared later by a strong definition in
5722 a shared library. We account for that possibility below by
5723 storing information in the dyn_relocs field of the hash
5724 table entry. A similar situation occurs when creating
5725 shared libraries and symbol visibility changes render the
5728 If on the other hand, we are creating an executable, we
5729 may need to keep relocations for symbols satisfied by a
5730 dynamic library if we manage to avoid copy relocs for the
5734 && (must_be_dyn_reloc (info, r_type)
5736 && (!SYMBOLIC_BIND (info, h)
5737 || h->root.type == bfd_link_hash_defweak
5738 || !h->def_regular))))
5739 || (ELIMINATE_COPY_RELOCS
5742 && (h->root.type == bfd_link_hash_defweak
5743 || !h->def_regular))
5747 /* We must copy these reloc types into the output file.
5748 Create a reloc section in dynobj and make room for
5752 sreloc = _bfd_elf_make_dynamic_reloc_section
5753 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5759 /* If this is a global symbol, we count the number of
5760 relocations we need for this symbol. */
5763 struct elf_dyn_relocs *p;
5764 struct elf_dyn_relocs **head;
5766 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5768 if (p == NULL || p->sec != sec)
5770 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5780 if (!must_be_dyn_reloc (info, r_type))
5785 /* Track dynamic relocs needed for local syms too.
5786 We really need local syms available to do this
5788 struct ppc_dyn_relocs *p;
5789 struct ppc_dyn_relocs **head;
5790 bfd_boolean is_ifunc;
5793 Elf_Internal_Sym *isym;
5795 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5800 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5804 vpp = &elf_section_data (s)->local_dynrel;
5805 head = (struct ppc_dyn_relocs **) vpp;
5806 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5808 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5810 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5812 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5818 p->ifunc = is_ifunc;
5834 /* Merge backend specific data from an object file to the output
5835 object file when linking. */
5838 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5840 unsigned long iflags, oflags;
5842 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5845 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5848 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5851 iflags = elf_elfheader (ibfd)->e_flags;
5852 oflags = elf_elfheader (obfd)->e_flags;
5854 if (iflags & ~EF_PPC64_ABI)
5856 (*_bfd_error_handler)
5857 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5858 bfd_set_error (bfd_error_bad_value);
5861 else if (iflags != oflags && iflags != 0)
5863 (*_bfd_error_handler)
5864 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5865 ibfd, iflags, oflags);
5866 bfd_set_error (bfd_error_bad_value);
5870 /* Merge Tag_compatibility attributes and any common GNU ones. */
5871 _bfd_elf_merge_object_attributes (ibfd, obfd);
5877 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5879 /* Print normal ELF private data. */
5880 _bfd_elf_print_private_bfd_data (abfd, ptr);
5882 if (elf_elfheader (abfd)->e_flags != 0)
5886 /* xgettext:c-format */
5887 fprintf (file, _("private flags = 0x%lx:"),
5888 elf_elfheader (abfd)->e_flags);
5890 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5891 fprintf (file, _(" [abiv%ld]"),
5892 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5899 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5900 of the code entry point, and its section. */
5903 opd_entry_value (asection *opd_sec,
5905 asection **code_sec,
5907 bfd_boolean in_code_sec)
5909 bfd *opd_bfd = opd_sec->owner;
5910 Elf_Internal_Rela *relocs;
5911 Elf_Internal_Rela *lo, *hi, *look;
5914 /* No relocs implies we are linking a --just-symbols object, or looking
5915 at a final linked executable with addr2line or somesuch. */
5916 if (opd_sec->reloc_count == 0)
5918 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5920 if (contents == NULL)
5922 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5923 return (bfd_vma) -1;
5924 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5927 val = bfd_get_64 (opd_bfd, contents + offset);
5928 if (code_sec != NULL)
5930 asection *sec, *likely = NULL;
5936 && val < sec->vma + sec->size)
5942 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5944 && (sec->flags & SEC_LOAD) != 0
5945 && (sec->flags & SEC_ALLOC) != 0)
5950 if (code_off != NULL)
5951 *code_off = val - likely->vma;
5957 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5959 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5961 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5963 /* Go find the opd reloc at the sym address. */
5965 BFD_ASSERT (lo != NULL);
5966 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5970 look = lo + (hi - lo) / 2;
5971 if (look->r_offset < offset)
5973 else if (look->r_offset > offset)
5977 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5979 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5980 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5982 unsigned long symndx = ELF64_R_SYM (look->r_info);
5985 if (symndx < symtab_hdr->sh_info
5986 || elf_sym_hashes (opd_bfd) == NULL)
5988 Elf_Internal_Sym *sym;
5990 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5993 size_t symcnt = symtab_hdr->sh_info;
5994 if (elf_sym_hashes (opd_bfd) == NULL)
5995 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5996 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5997 0, NULL, NULL, NULL);
6000 symtab_hdr->contents = (bfd_byte *) sym;
6004 val = sym->st_value;
6005 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6006 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6010 struct elf_link_hash_entry **sym_hashes;
6011 struct elf_link_hash_entry *rh;
6013 sym_hashes = elf_sym_hashes (opd_bfd);
6014 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6017 rh = elf_follow_link (rh);
6018 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6019 || rh->root.type == bfd_link_hash_defweak);
6020 val = rh->root.u.def.value;
6021 sec = rh->root.u.def.section;
6025 /* Handle the odd case where we can be called
6026 during bfd_elf_link_add_symbols before the
6027 symbol hashes have been fully populated. */
6028 Elf_Internal_Sym *sym;
6030 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6031 symndx, NULL, NULL, NULL);
6035 val = sym->st_value;
6036 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6040 val += look->r_addend;
6041 if (code_off != NULL)
6043 if (code_sec != NULL)
6045 if (in_code_sec && *code_sec != sec)
6050 if (sec != NULL && sec->output_section != NULL)
6051 val += sec->output_section->vma + sec->output_offset;
6060 /* If the ELF symbol SYM might be a function in SEC, return the
6061 function size and set *CODE_OFF to the function's entry point,
6062 otherwise return zero. */
6064 static bfd_size_type
6065 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6070 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6071 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6075 if (!(sym->flags & BSF_SYNTHETIC))
6076 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6078 if (strcmp (sym->section->name, ".opd") == 0)
6080 if (opd_entry_value (sym->section, sym->value,
6081 &sec, code_off, TRUE) == (bfd_vma) -1)
6083 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6084 symbol. This size has nothing to do with the code size of the
6085 function, which is what we're supposed to return, but the
6086 code size isn't available without looking up the dot-sym.
6087 However, doing that would be a waste of time particularly
6088 since elf_find_function will look at the dot-sym anyway.
6089 Now, elf_find_function will keep the largest size of any
6090 function sym found at the code address of interest, so return
6091 1 here to avoid it incorrectly caching a larger function size
6092 for a small function. This does mean we return the wrong
6093 size for a new-ABI function of size 24, but all that does is
6094 disable caching for such functions. */
6100 if (sym->section != sec)
6102 *code_off = sym->value;
6109 /* Return true if symbol is defined in a regular object file. */
6112 is_static_defined (struct elf_link_hash_entry *h)
6114 return ((h->root.type == bfd_link_hash_defined
6115 || h->root.type == bfd_link_hash_defweak)
6116 && h->root.u.def.section != NULL
6117 && h->root.u.def.section->output_section != NULL);
6120 /* If FDH is a function descriptor symbol, return the associated code
6121 entry symbol if it is defined. Return NULL otherwise. */
6123 static struct ppc_link_hash_entry *
6124 defined_code_entry (struct ppc_link_hash_entry *fdh)
6126 if (fdh->is_func_descriptor)
6128 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6129 if (fh->elf.root.type == bfd_link_hash_defined
6130 || fh->elf.root.type == bfd_link_hash_defweak)
6136 /* If FH is a function code entry symbol, return the associated
6137 function descriptor symbol if it is defined. Return NULL otherwise. */
6139 static struct ppc_link_hash_entry *
6140 defined_func_desc (struct ppc_link_hash_entry *fh)
6143 && fh->oh->is_func_descriptor)
6145 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6146 if (fdh->elf.root.type == bfd_link_hash_defined
6147 || fdh->elf.root.type == bfd_link_hash_defweak)
6153 /* Mark all our entry sym sections, both opd and code section. */
6156 ppc64_elf_gc_keep (struct bfd_link_info *info)
6158 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6159 struct bfd_sym_chain *sym;
6164 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6166 struct ppc_link_hash_entry *eh, *fh;
6169 eh = (struct ppc_link_hash_entry *)
6170 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6173 if (eh->elf.root.type != bfd_link_hash_defined
6174 && eh->elf.root.type != bfd_link_hash_defweak)
6177 fh = defined_code_entry (eh);
6180 sec = fh->elf.root.u.def.section;
6181 sec->flags |= SEC_KEEP;
6183 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6184 && opd_entry_value (eh->elf.root.u.def.section,
6185 eh->elf.root.u.def.value,
6186 &sec, NULL, FALSE) != (bfd_vma) -1)
6187 sec->flags |= SEC_KEEP;
6189 sec = eh->elf.root.u.def.section;
6190 sec->flags |= SEC_KEEP;
6194 /* Mark sections containing dynamically referenced symbols. When
6195 building shared libraries, we must assume that any visible symbol is
6199 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6201 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6202 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6203 struct ppc_link_hash_entry *fdh;
6204 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6206 /* Dynamic linking info is on the func descriptor sym. */
6207 fdh = defined_func_desc (eh);
6211 if ((eh->elf.root.type == bfd_link_hash_defined
6212 || eh->elf.root.type == bfd_link_hash_defweak)
6213 && (eh->elf.ref_dynamic
6214 || (eh->elf.def_regular
6215 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6216 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6217 && (!info->executable
6218 || info->export_dynamic
6221 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6222 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6223 || !bfd_hide_sym_by_version (info->version_info,
6224 eh->elf.root.root.string)))))
6227 struct ppc_link_hash_entry *fh;
6229 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6231 /* Function descriptor syms cause the associated
6232 function code sym section to be marked. */
6233 fh = defined_code_entry (eh);
6236 code_sec = fh->elf.root.u.def.section;
6237 code_sec->flags |= SEC_KEEP;
6239 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6240 && opd_entry_value (eh->elf.root.u.def.section,
6241 eh->elf.root.u.def.value,
6242 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6243 code_sec->flags |= SEC_KEEP;
6249 /* Return the section that should be marked against GC for a given
6253 ppc64_elf_gc_mark_hook (asection *sec,
6254 struct bfd_link_info *info,
6255 Elf_Internal_Rela *rel,
6256 struct elf_link_hash_entry *h,
6257 Elf_Internal_Sym *sym)
6261 /* Syms return NULL if we're marking .opd, so we avoid marking all
6262 function sections, as all functions are referenced in .opd. */
6264 if (get_opd_info (sec) != NULL)
6269 enum elf_ppc64_reloc_type r_type;
6270 struct ppc_link_hash_entry *eh, *fh, *fdh;
6272 r_type = ELF64_R_TYPE (rel->r_info);
6275 case R_PPC64_GNU_VTINHERIT:
6276 case R_PPC64_GNU_VTENTRY:
6280 switch (h->root.type)
6282 case bfd_link_hash_defined:
6283 case bfd_link_hash_defweak:
6284 eh = (struct ppc_link_hash_entry *) h;
6285 fdh = defined_func_desc (eh);
6289 /* Function descriptor syms cause the associated
6290 function code sym section to be marked. */
6291 fh = defined_code_entry (eh);
6294 /* They also mark their opd section. */
6295 eh->elf.root.u.def.section->gc_mark = 1;
6297 rsec = fh->elf.root.u.def.section;
6299 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6300 && opd_entry_value (eh->elf.root.u.def.section,
6301 eh->elf.root.u.def.value,
6302 &rsec, NULL, FALSE) != (bfd_vma) -1)
6303 eh->elf.root.u.def.section->gc_mark = 1;
6305 rsec = h->root.u.def.section;
6308 case bfd_link_hash_common:
6309 rsec = h->root.u.c.p->section;
6313 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6319 struct _opd_sec_data *opd;
6321 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6322 opd = get_opd_info (rsec);
6323 if (opd != NULL && opd->func_sec != NULL)
6327 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6334 /* Update the .got, .plt. and dynamic reloc reference counts for the
6335 section being removed. */
6338 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6339 asection *sec, const Elf_Internal_Rela *relocs)
6341 struct ppc_link_hash_table *htab;
6342 Elf_Internal_Shdr *symtab_hdr;
6343 struct elf_link_hash_entry **sym_hashes;
6344 struct got_entry **local_got_ents;
6345 const Elf_Internal_Rela *rel, *relend;
6347 if (info->relocatable)
6350 if ((sec->flags & SEC_ALLOC) == 0)
6353 elf_section_data (sec)->local_dynrel = NULL;
6355 htab = ppc_hash_table (info);
6359 symtab_hdr = &elf_symtab_hdr (abfd);
6360 sym_hashes = elf_sym_hashes (abfd);
6361 local_got_ents = elf_local_got_ents (abfd);
6363 relend = relocs + sec->reloc_count;
6364 for (rel = relocs; rel < relend; rel++)
6366 unsigned long r_symndx;
6367 enum elf_ppc64_reloc_type r_type;
6368 struct elf_link_hash_entry *h = NULL;
6369 unsigned char tls_type = 0;
6371 r_symndx = ELF64_R_SYM (rel->r_info);
6372 r_type = ELF64_R_TYPE (rel->r_info);
6373 if (r_symndx >= symtab_hdr->sh_info)
6375 struct ppc_link_hash_entry *eh;
6376 struct elf_dyn_relocs **pp;
6377 struct elf_dyn_relocs *p;
6379 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6380 h = elf_follow_link (h);
6381 eh = (struct ppc_link_hash_entry *) h;
6383 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6386 /* Everything must go for SEC. */
6392 if (is_branch_reloc (r_type))
6394 struct plt_entry **ifunc = NULL;
6397 if (h->type == STT_GNU_IFUNC)
6398 ifunc = &h->plt.plist;
6400 else if (local_got_ents != NULL)
6402 struct plt_entry **local_plt = (struct plt_entry **)
6403 (local_got_ents + symtab_hdr->sh_info);
6404 unsigned char *local_got_tls_masks = (unsigned char *)
6405 (local_plt + symtab_hdr->sh_info);
6406 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6407 ifunc = local_plt + r_symndx;
6411 struct plt_entry *ent;
6413 for (ent = *ifunc; ent != NULL; ent = ent->next)
6414 if (ent->addend == rel->r_addend)
6418 if (ent->plt.refcount > 0)
6419 ent->plt.refcount -= 1;
6426 case R_PPC64_GOT_TLSLD16:
6427 case R_PPC64_GOT_TLSLD16_LO:
6428 case R_PPC64_GOT_TLSLD16_HI:
6429 case R_PPC64_GOT_TLSLD16_HA:
6430 tls_type = TLS_TLS | TLS_LD;
6433 case R_PPC64_GOT_TLSGD16:
6434 case R_PPC64_GOT_TLSGD16_LO:
6435 case R_PPC64_GOT_TLSGD16_HI:
6436 case R_PPC64_GOT_TLSGD16_HA:
6437 tls_type = TLS_TLS | TLS_GD;
6440 case R_PPC64_GOT_TPREL16_DS:
6441 case R_PPC64_GOT_TPREL16_LO_DS:
6442 case R_PPC64_GOT_TPREL16_HI:
6443 case R_PPC64_GOT_TPREL16_HA:
6444 tls_type = TLS_TLS | TLS_TPREL;
6447 case R_PPC64_GOT_DTPREL16_DS:
6448 case R_PPC64_GOT_DTPREL16_LO_DS:
6449 case R_PPC64_GOT_DTPREL16_HI:
6450 case R_PPC64_GOT_DTPREL16_HA:
6451 tls_type = TLS_TLS | TLS_DTPREL;
6455 case R_PPC64_GOT16_DS:
6456 case R_PPC64_GOT16_HA:
6457 case R_PPC64_GOT16_HI:
6458 case R_PPC64_GOT16_LO:
6459 case R_PPC64_GOT16_LO_DS:
6462 struct got_entry *ent;
6467 ent = local_got_ents[r_symndx];
6469 for (; ent != NULL; ent = ent->next)
6470 if (ent->addend == rel->r_addend
6471 && ent->owner == abfd
6472 && ent->tls_type == tls_type)
6476 if (ent->got.refcount > 0)
6477 ent->got.refcount -= 1;
6481 case R_PPC64_PLT16_HA:
6482 case R_PPC64_PLT16_HI:
6483 case R_PPC64_PLT16_LO:
6487 case R_PPC64_REL14_BRNTAKEN:
6488 case R_PPC64_REL14_BRTAKEN:
6492 struct plt_entry *ent;
6494 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6495 if (ent->addend == rel->r_addend)
6497 if (ent != NULL && ent->plt.refcount > 0)
6498 ent->plt.refcount -= 1;
6509 /* The maximum size of .sfpr. */
6510 #define SFPR_MAX (218*4)
6512 struct sfpr_def_parms
6514 const char name[12];
6515 unsigned char lo, hi;
6516 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6517 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6520 /* Auto-generate _save*, _rest* functions in .sfpr. */
6523 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6525 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6527 size_t len = strlen (parm->name);
6528 bfd_boolean writing = FALSE;
6534 memcpy (sym, parm->name, len);
6537 for (i = parm->lo; i <= parm->hi; i++)
6539 struct elf_link_hash_entry *h;
6541 sym[len + 0] = i / 10 + '0';
6542 sym[len + 1] = i % 10 + '0';
6543 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6547 h->root.type = bfd_link_hash_defined;
6548 h->root.u.def.section = htab->sfpr;
6549 h->root.u.def.value = htab->sfpr->size;
6552 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6554 if (htab->sfpr->contents == NULL)
6556 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6557 if (htab->sfpr->contents == NULL)
6563 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6565 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6567 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6568 htab->sfpr->size = p - htab->sfpr->contents;
6576 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6578 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6583 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6585 p = savegpr0 (abfd, p, r);
6586 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6588 bfd_put_32 (abfd, BLR, p);
6593 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6595 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6600 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6602 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6604 p = restgpr0 (abfd, p, r);
6605 bfd_put_32 (abfd, MTLR_R0, p);
6609 p = restgpr0 (abfd, p, 30);
6610 p = restgpr0 (abfd, p, 31);
6612 bfd_put_32 (abfd, BLR, p);
6617 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6619 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6624 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6626 p = savegpr1 (abfd, p, r);
6627 bfd_put_32 (abfd, BLR, p);
6632 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6634 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6639 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6641 p = restgpr1 (abfd, p, r);
6642 bfd_put_32 (abfd, BLR, p);
6647 savefpr (bfd *abfd, bfd_byte *p, int r)
6649 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6654 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6656 p = savefpr (abfd, p, r);
6657 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6659 bfd_put_32 (abfd, BLR, p);
6664 restfpr (bfd *abfd, bfd_byte *p, int r)
6666 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6671 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6673 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6675 p = restfpr (abfd, p, r);
6676 bfd_put_32 (abfd, MTLR_R0, p);
6680 p = restfpr (abfd, p, 30);
6681 p = restfpr (abfd, p, 31);
6683 bfd_put_32 (abfd, BLR, p);
6688 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6690 p = savefpr (abfd, p, r);
6691 bfd_put_32 (abfd, BLR, p);
6696 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6698 p = restfpr (abfd, p, r);
6699 bfd_put_32 (abfd, BLR, p);
6704 savevr (bfd *abfd, bfd_byte *p, int r)
6706 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6708 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6713 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6715 p = savevr (abfd, p, r);
6716 bfd_put_32 (abfd, BLR, p);
6721 restvr (bfd *abfd, bfd_byte *p, int r)
6723 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6725 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6730 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6732 p = restvr (abfd, p, r);
6733 bfd_put_32 (abfd, BLR, p);
6737 /* Called via elf_link_hash_traverse to transfer dynamic linking
6738 information on function code symbol entries to their corresponding
6739 function descriptor symbol entries. */
6742 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6744 struct bfd_link_info *info;
6745 struct ppc_link_hash_table *htab;
6746 struct plt_entry *ent;
6747 struct ppc_link_hash_entry *fh;
6748 struct ppc_link_hash_entry *fdh;
6749 bfd_boolean force_local;
6751 fh = (struct ppc_link_hash_entry *) h;
6752 if (fh->elf.root.type == bfd_link_hash_indirect)
6756 htab = ppc_hash_table (info);
6760 /* Resolve undefined references to dot-symbols as the value
6761 in the function descriptor, if we have one in a regular object.
6762 This is to satisfy cases like ".quad .foo". Calls to functions
6763 in dynamic objects are handled elsewhere. */
6764 if (fh->elf.root.type == bfd_link_hash_undefweak
6765 && fh->was_undefined
6766 && (fdh = defined_func_desc (fh)) != NULL
6767 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6768 && opd_entry_value (fdh->elf.root.u.def.section,
6769 fdh->elf.root.u.def.value,
6770 &fh->elf.root.u.def.section,
6771 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6773 fh->elf.root.type = fdh->elf.root.type;
6774 fh->elf.forced_local = 1;
6775 fh->elf.def_regular = fdh->elf.def_regular;
6776 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6779 /* If this is a function code symbol, transfer dynamic linking
6780 information to the function descriptor symbol. */
6784 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6785 if (ent->plt.refcount > 0)
6788 || fh->elf.root.root.string[0] != '.'
6789 || fh->elf.root.root.string[1] == '\0')
6792 /* Find the corresponding function descriptor symbol. Create it
6793 as undefined if necessary. */
6795 fdh = lookup_fdh (fh, htab);
6797 && !info->executable
6798 && (fh->elf.root.type == bfd_link_hash_undefined
6799 || fh->elf.root.type == bfd_link_hash_undefweak))
6801 fdh = make_fdh (info, fh);
6806 /* Fake function descriptors are made undefweak. If the function
6807 code symbol is strong undefined, make the fake sym the same.
6808 If the function code symbol is defined, then force the fake
6809 descriptor local; We can't support overriding of symbols in a
6810 shared library on a fake descriptor. */
6814 && fdh->elf.root.type == bfd_link_hash_undefweak)
6816 if (fh->elf.root.type == bfd_link_hash_undefined)
6818 fdh->elf.root.type = bfd_link_hash_undefined;
6819 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6821 else if (fh->elf.root.type == bfd_link_hash_defined
6822 || fh->elf.root.type == bfd_link_hash_defweak)
6824 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6829 && !fdh->elf.forced_local
6830 && (!info->executable
6831 || fdh->elf.def_dynamic
6832 || fdh->elf.ref_dynamic
6833 || (fdh->elf.root.type == bfd_link_hash_undefweak
6834 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6836 if (fdh->elf.dynindx == -1)
6837 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6839 fdh->elf.ref_regular |= fh->elf.ref_regular;
6840 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6841 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6842 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6843 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6845 move_plt_plist (fh, fdh);
6846 fdh->elf.needs_plt = 1;
6848 fdh->is_func_descriptor = 1;
6853 /* Now that the info is on the function descriptor, clear the
6854 function code sym info. Any function code syms for which we
6855 don't have a definition in a regular file, we force local.
6856 This prevents a shared library from exporting syms that have
6857 been imported from another library. Function code syms that
6858 are really in the library we must leave global to prevent the
6859 linker dragging in a definition from a static library. */
6860 force_local = (!fh->elf.def_regular
6862 || !fdh->elf.def_regular
6863 || fdh->elf.forced_local);
6864 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6869 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6870 this hook to a) provide some gcc support functions, and b) transfer
6871 dynamic linking information gathered so far on function code symbol
6872 entries, to their corresponding function descriptor symbol entries. */
6875 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6876 struct bfd_link_info *info)
6878 struct ppc_link_hash_table *htab;
6880 static const struct sfpr_def_parms funcs[] =
6882 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6883 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6884 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6885 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6886 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6887 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6888 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6889 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6890 { "._savef", 14, 31, savefpr, savefpr1_tail },
6891 { "._restf", 14, 31, restfpr, restfpr1_tail },
6892 { "_savevr_", 20, 31, savevr, savevr_tail },
6893 { "_restvr_", 20, 31, restvr, restvr_tail }
6896 htab = ppc_hash_table (info);
6900 if (!info->relocatable
6901 && htab->elf.hgot != NULL)
6903 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6904 /* Make .TOC. defined so as to prevent it being made dynamic.
6905 The wrong value here is fixed later in ppc64_elf_set_toc. */
6906 htab->elf.hgot->type = STT_OBJECT;
6907 htab->elf.hgot->root.type = bfd_link_hash_defined;
6908 htab->elf.hgot->root.u.def.value = 0;
6909 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6910 htab->elf.hgot->def_regular = 1;
6911 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6915 if (htab->sfpr == NULL)
6916 /* We don't have any relocs. */
6919 /* Provide any missing _save* and _rest* functions. */
6920 htab->sfpr->size = 0;
6921 if (htab->params->save_restore_funcs)
6922 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6923 if (!sfpr_define (info, &funcs[i]))
6926 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6928 if (htab->sfpr->size == 0)
6929 htab->sfpr->flags |= SEC_EXCLUDE;
6934 /* Return true if we have dynamic relocs that apply to read-only sections. */
6937 readonly_dynrelocs (struct elf_link_hash_entry *h)
6939 struct ppc_link_hash_entry *eh;
6940 struct elf_dyn_relocs *p;
6942 eh = (struct ppc_link_hash_entry *) h;
6943 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6945 asection *s = p->sec->output_section;
6947 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6953 /* Adjust a symbol defined by a dynamic object and referenced by a
6954 regular object. The current definition is in some section of the
6955 dynamic object, but we're not including those sections. We have to
6956 change the definition to something the rest of the link can
6960 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6961 struct elf_link_hash_entry *h)
6963 struct ppc_link_hash_table *htab;
6966 htab = ppc_hash_table (info);
6970 /* Deal with function syms. */
6971 if (h->type == STT_FUNC
6972 || h->type == STT_GNU_IFUNC
6975 /* Clear procedure linkage table information for any symbol that
6976 won't need a .plt entry. */
6977 struct plt_entry *ent;
6978 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6979 if (ent->plt.refcount > 0)
6982 || (h->type != STT_GNU_IFUNC
6983 && (SYMBOL_CALLS_LOCAL (info, h)
6984 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6985 && h->root.type == bfd_link_hash_undefweak))))
6987 h->plt.plist = NULL;
6989 h->pointer_equality_needed = 0;
6991 else if (abiversion (info->output_bfd) == 2)
6993 /* Taking a function's address in a read/write section
6994 doesn't require us to define the function symbol in the
6995 executable on a global entry stub. A dynamic reloc can
6997 if (h->pointer_equality_needed
6998 && h->type != STT_GNU_IFUNC
6999 && !readonly_dynrelocs (h))
7001 h->pointer_equality_needed = 0;
7005 /* After adjust_dynamic_symbol, non_got_ref set in the
7006 non-shared case means that we have allocated space in
7007 .dynbss for the symbol and thus dyn_relocs for this
7008 symbol should be discarded.
7009 If we get here we know we are making a PLT entry for this
7010 symbol, and in an executable we'd normally resolve
7011 relocations against this symbol to the PLT entry. Allow
7012 dynamic relocs if the reference is weak, and the dynamic
7013 relocs will not cause text relocation. */
7014 else if (!h->ref_regular_nonweak
7016 && h->type != STT_GNU_IFUNC
7017 && !readonly_dynrelocs (h))
7020 /* If making a plt entry, then we don't need copy relocs. */
7025 h->plt.plist = NULL;
7027 /* If this is a weak symbol, and there is a real definition, the
7028 processor independent code will have arranged for us to see the
7029 real definition first, and we can just use the same value. */
7030 if (h->u.weakdef != NULL)
7032 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7033 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7034 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7035 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7036 if (ELIMINATE_COPY_RELOCS)
7037 h->non_got_ref = h->u.weakdef->non_got_ref;
7041 /* If we are creating a shared library, we must presume that the
7042 only references to the symbol are via the global offset table.
7043 For such cases we need not do anything here; the relocations will
7044 be handled correctly by relocate_section. */
7048 /* If there are no references to this symbol that do not use the
7049 GOT, we don't need to generate a copy reloc. */
7050 if (!h->non_got_ref)
7053 /* Don't generate a copy reloc for symbols defined in the executable. */
7054 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7057 /* If we didn't find any dynamic relocs in read-only sections, then
7058 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7059 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
7065 if (h->plt.plist != NULL)
7067 /* We should never get here, but unfortunately there are versions
7068 of gcc out there that improperly (for this ABI) put initialized
7069 function pointers, vtable refs and suchlike in read-only
7070 sections. Allow them to proceed, but warn that this might
7071 break at runtime. */
7072 info->callbacks->einfo
7073 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7074 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7075 h->root.root.string);
7078 /* This is a reference to a symbol defined by a dynamic object which
7079 is not a function. */
7081 /* We must allocate the symbol in our .dynbss section, which will
7082 become part of the .bss section of the executable. There will be
7083 an entry for this symbol in the .dynsym section. The dynamic
7084 object will contain position independent code, so all references
7085 from the dynamic object to this symbol will go through the global
7086 offset table. The dynamic linker will use the .dynsym entry to
7087 determine the address it must put in the global offset table, so
7088 both the dynamic object and the regular object will refer to the
7089 same memory location for the variable. */
7091 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7092 to copy the initial value out of the dynamic object and into the
7093 runtime process image. We need to remember the offset into the
7094 .rela.bss section we are going to use. */
7095 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7097 htab->relbss->size += sizeof (Elf64_External_Rela);
7103 return _bfd_elf_adjust_dynamic_copy (h, s);
7106 /* If given a function descriptor symbol, hide both the function code
7107 sym and the descriptor. */
7109 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7110 struct elf_link_hash_entry *h,
7111 bfd_boolean force_local)
7113 struct ppc_link_hash_entry *eh;
7114 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7116 eh = (struct ppc_link_hash_entry *) h;
7117 if (eh->is_func_descriptor)
7119 struct ppc_link_hash_entry *fh = eh->oh;
7124 struct ppc_link_hash_table *htab;
7127 /* We aren't supposed to use alloca in BFD because on
7128 systems which do not have alloca the version in libiberty
7129 calls xmalloc, which might cause the program to crash
7130 when it runs out of memory. This function doesn't have a
7131 return status, so there's no way to gracefully return an
7132 error. So cheat. We know that string[-1] can be safely
7133 accessed; It's either a string in an ELF string table,
7134 or allocated in an objalloc structure. */
7136 p = eh->elf.root.root.string - 1;
7139 htab = ppc_hash_table (info);
7143 fh = (struct ppc_link_hash_entry *)
7144 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7147 /* Unfortunately, if it so happens that the string we were
7148 looking for was allocated immediately before this string,
7149 then we overwrote the string terminator. That's the only
7150 reason the lookup should fail. */
7153 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7154 while (q >= eh->elf.root.root.string && *q == *p)
7156 if (q < eh->elf.root.root.string && *p == '.')
7157 fh = (struct ppc_link_hash_entry *)
7158 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7167 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7172 get_sym_h (struct elf_link_hash_entry **hp,
7173 Elf_Internal_Sym **symp,
7175 unsigned char **tls_maskp,
7176 Elf_Internal_Sym **locsymsp,
7177 unsigned long r_symndx,
7180 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7182 if (r_symndx >= symtab_hdr->sh_info)
7184 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7185 struct elf_link_hash_entry *h;
7187 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7188 h = elf_follow_link (h);
7196 if (symsecp != NULL)
7198 asection *symsec = NULL;
7199 if (h->root.type == bfd_link_hash_defined
7200 || h->root.type == bfd_link_hash_defweak)
7201 symsec = h->root.u.def.section;
7205 if (tls_maskp != NULL)
7207 struct ppc_link_hash_entry *eh;
7209 eh = (struct ppc_link_hash_entry *) h;
7210 *tls_maskp = &eh->tls_mask;
7215 Elf_Internal_Sym *sym;
7216 Elf_Internal_Sym *locsyms = *locsymsp;
7218 if (locsyms == NULL)
7220 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7221 if (locsyms == NULL)
7222 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7223 symtab_hdr->sh_info,
7224 0, NULL, NULL, NULL);
7225 if (locsyms == NULL)
7227 *locsymsp = locsyms;
7229 sym = locsyms + r_symndx;
7237 if (symsecp != NULL)
7238 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7240 if (tls_maskp != NULL)
7242 struct got_entry **lgot_ents;
7243 unsigned char *tls_mask;
7246 lgot_ents = elf_local_got_ents (ibfd);
7247 if (lgot_ents != NULL)
7249 struct plt_entry **local_plt = (struct plt_entry **)
7250 (lgot_ents + symtab_hdr->sh_info);
7251 unsigned char *lgot_masks = (unsigned char *)
7252 (local_plt + symtab_hdr->sh_info);
7253 tls_mask = &lgot_masks[r_symndx];
7255 *tls_maskp = tls_mask;
7261 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7262 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7263 type suitable for optimization, and 1 otherwise. */
7266 get_tls_mask (unsigned char **tls_maskp,
7267 unsigned long *toc_symndx,
7268 bfd_vma *toc_addend,
7269 Elf_Internal_Sym **locsymsp,
7270 const Elf_Internal_Rela *rel,
7273 unsigned long r_symndx;
7275 struct elf_link_hash_entry *h;
7276 Elf_Internal_Sym *sym;
7280 r_symndx = ELF64_R_SYM (rel->r_info);
7281 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7284 if ((*tls_maskp != NULL && **tls_maskp != 0)
7286 || ppc64_elf_section_data (sec) == NULL
7287 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7290 /* Look inside a TOC section too. */
7293 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7294 off = h->root.u.def.value;
7297 off = sym->st_value;
7298 off += rel->r_addend;
7299 BFD_ASSERT (off % 8 == 0);
7300 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7301 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7302 if (toc_symndx != NULL)
7303 *toc_symndx = r_symndx;
7304 if (toc_addend != NULL)
7305 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7306 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7308 if ((h == NULL || is_static_defined (h))
7309 && (next_r == -1 || next_r == -2))
7314 /* Find (or create) an entry in the tocsave hash table. */
7316 static struct tocsave_entry *
7317 tocsave_find (struct ppc_link_hash_table *htab,
7318 enum insert_option insert,
7319 Elf_Internal_Sym **local_syms,
7320 const Elf_Internal_Rela *irela,
7323 unsigned long r_indx;
7324 struct elf_link_hash_entry *h;
7325 Elf_Internal_Sym *sym;
7326 struct tocsave_entry ent, *p;
7328 struct tocsave_entry **slot;
7330 r_indx = ELF64_R_SYM (irela->r_info);
7331 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7333 if (ent.sec == NULL || ent.sec->output_section == NULL)
7335 (*_bfd_error_handler)
7336 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7341 ent.offset = h->root.u.def.value;
7343 ent.offset = sym->st_value;
7344 ent.offset += irela->r_addend;
7346 hash = tocsave_htab_hash (&ent);
7347 slot = ((struct tocsave_entry **)
7348 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7354 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7363 /* Adjust all global syms defined in opd sections. In gcc generated
7364 code for the old ABI, these will already have been done. */
7367 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7369 struct ppc_link_hash_entry *eh;
7371 struct _opd_sec_data *opd;
7373 if (h->root.type == bfd_link_hash_indirect)
7376 if (h->root.type != bfd_link_hash_defined
7377 && h->root.type != bfd_link_hash_defweak)
7380 eh = (struct ppc_link_hash_entry *) h;
7381 if (eh->adjust_done)
7384 sym_sec = eh->elf.root.u.def.section;
7385 opd = get_opd_info (sym_sec);
7386 if (opd != NULL && opd->adjust != NULL)
7388 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7391 /* This entry has been deleted. */
7392 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7395 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7396 if (discarded_section (dsec))
7398 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7402 eh->elf.root.u.def.value = 0;
7403 eh->elf.root.u.def.section = dsec;
7406 eh->elf.root.u.def.value += adjust;
7407 eh->adjust_done = 1;
7412 /* Handles decrementing dynamic reloc counts for the reloc specified by
7413 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7414 have already been determined. */
7417 dec_dynrel_count (bfd_vma r_info,
7419 struct bfd_link_info *info,
7420 Elf_Internal_Sym **local_syms,
7421 struct elf_link_hash_entry *h,
7422 Elf_Internal_Sym *sym)
7424 enum elf_ppc64_reloc_type r_type;
7425 asection *sym_sec = NULL;
7427 /* Can this reloc be dynamic? This switch, and later tests here
7428 should be kept in sync with the code in check_relocs. */
7429 r_type = ELF64_R_TYPE (r_info);
7435 case R_PPC64_TPREL16:
7436 case R_PPC64_TPREL16_LO:
7437 case R_PPC64_TPREL16_HI:
7438 case R_PPC64_TPREL16_HA:
7439 case R_PPC64_TPREL16_DS:
7440 case R_PPC64_TPREL16_LO_DS:
7441 case R_PPC64_TPREL16_HIGH:
7442 case R_PPC64_TPREL16_HIGHA:
7443 case R_PPC64_TPREL16_HIGHER:
7444 case R_PPC64_TPREL16_HIGHERA:
7445 case R_PPC64_TPREL16_HIGHEST:
7446 case R_PPC64_TPREL16_HIGHESTA:
7450 case R_PPC64_TPREL64:
7451 case R_PPC64_DTPMOD64:
7452 case R_PPC64_DTPREL64:
7453 case R_PPC64_ADDR64:
7457 case R_PPC64_ADDR14:
7458 case R_PPC64_ADDR14_BRNTAKEN:
7459 case R_PPC64_ADDR14_BRTAKEN:
7460 case R_PPC64_ADDR16:
7461 case R_PPC64_ADDR16_DS:
7462 case R_PPC64_ADDR16_HA:
7463 case R_PPC64_ADDR16_HI:
7464 case R_PPC64_ADDR16_HIGH:
7465 case R_PPC64_ADDR16_HIGHA:
7466 case R_PPC64_ADDR16_HIGHER:
7467 case R_PPC64_ADDR16_HIGHERA:
7468 case R_PPC64_ADDR16_HIGHEST:
7469 case R_PPC64_ADDR16_HIGHESTA:
7470 case R_PPC64_ADDR16_LO:
7471 case R_PPC64_ADDR16_LO_DS:
7472 case R_PPC64_ADDR24:
7473 case R_PPC64_ADDR32:
7474 case R_PPC64_UADDR16:
7475 case R_PPC64_UADDR32:
7476 case R_PPC64_UADDR64:
7481 if (local_syms != NULL)
7483 unsigned long r_symndx;
7484 bfd *ibfd = sec->owner;
7486 r_symndx = ELF64_R_SYM (r_info);
7487 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7492 && (must_be_dyn_reloc (info, r_type)
7494 && (!SYMBOLIC_BIND (info, h)
7495 || h->root.type == bfd_link_hash_defweak
7496 || !h->def_regular))))
7497 || (ELIMINATE_COPY_RELOCS
7500 && (h->root.type == bfd_link_hash_defweak
7501 || !h->def_regular)))
7508 struct elf_dyn_relocs *p;
7509 struct elf_dyn_relocs **pp;
7510 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7512 /* elf_gc_sweep may have already removed all dyn relocs associated
7513 with local syms for a given section. Also, symbol flags are
7514 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7515 report a dynreloc miscount. */
7516 if (*pp == NULL && info->gc_sections)
7519 while ((p = *pp) != NULL)
7523 if (!must_be_dyn_reloc (info, r_type))
7535 struct ppc_dyn_relocs *p;
7536 struct ppc_dyn_relocs **pp;
7538 bfd_boolean is_ifunc;
7540 if (local_syms == NULL)
7541 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7542 if (sym_sec == NULL)
7545 vpp = &elf_section_data (sym_sec)->local_dynrel;
7546 pp = (struct ppc_dyn_relocs **) vpp;
7548 if (*pp == NULL && info->gc_sections)
7551 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7552 while ((p = *pp) != NULL)
7554 if (p->sec == sec && p->ifunc == is_ifunc)
7565 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7567 bfd_set_error (bfd_error_bad_value);
7571 /* Remove unused Official Procedure Descriptor entries. Currently we
7572 only remove those associated with functions in discarded link-once
7573 sections, or weakly defined functions that have been overridden. It
7574 would be possible to remove many more entries for statically linked
7578 ppc64_elf_edit_opd (struct bfd_link_info *info)
7581 bfd_boolean some_edited = FALSE;
7582 asection *need_pad = NULL;
7583 struct ppc_link_hash_table *htab;
7585 htab = ppc_hash_table (info);
7589 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7592 Elf_Internal_Rela *relstart, *rel, *relend;
7593 Elf_Internal_Shdr *symtab_hdr;
7594 Elf_Internal_Sym *local_syms;
7596 struct _opd_sec_data *opd;
7597 bfd_boolean need_edit, add_aux_fields;
7598 bfd_size_type cnt_16b = 0;
7600 if (!is_ppc64_elf (ibfd))
7603 sec = bfd_get_section_by_name (ibfd, ".opd");
7604 if (sec == NULL || sec->size == 0)
7607 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7610 if (sec->output_section == bfd_abs_section_ptr)
7613 /* Look through the section relocs. */
7614 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7618 symtab_hdr = &elf_symtab_hdr (ibfd);
7620 /* Read the relocations. */
7621 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7623 if (relstart == NULL)
7626 /* First run through the relocs to check they are sane, and to
7627 determine whether we need to edit this opd section. */
7631 relend = relstart + sec->reloc_count;
7632 for (rel = relstart; rel < relend; )
7634 enum elf_ppc64_reloc_type r_type;
7635 unsigned long r_symndx;
7637 struct elf_link_hash_entry *h;
7638 Elf_Internal_Sym *sym;
7640 /* .opd contains a regular array of 16 or 24 byte entries. We're
7641 only interested in the reloc pointing to a function entry
7643 if (rel->r_offset != offset
7644 || rel + 1 >= relend
7645 || (rel + 1)->r_offset != offset + 8)
7647 /* If someone messes with .opd alignment then after a
7648 "ld -r" we might have padding in the middle of .opd.
7649 Also, there's nothing to prevent someone putting
7650 something silly in .opd with the assembler. No .opd
7651 optimization for them! */
7653 (*_bfd_error_handler)
7654 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7659 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7660 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7662 (*_bfd_error_handler)
7663 (_("%B: unexpected reloc type %u in .opd section"),
7669 r_symndx = ELF64_R_SYM (rel->r_info);
7670 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7674 if (sym_sec == NULL || sym_sec->owner == NULL)
7676 const char *sym_name;
7678 sym_name = h->root.root.string;
7680 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7683 (*_bfd_error_handler)
7684 (_("%B: undefined sym `%s' in .opd section"),
7690 /* opd entries are always for functions defined in the
7691 current input bfd. If the symbol isn't defined in the
7692 input bfd, then we won't be using the function in this
7693 bfd; It must be defined in a linkonce section in another
7694 bfd, or is weak. It's also possible that we are
7695 discarding the function due to a linker script /DISCARD/,
7696 which we test for via the output_section. */
7697 if (sym_sec->owner != ibfd
7698 || sym_sec->output_section == bfd_abs_section_ptr)
7703 || (rel + 1 == relend && rel->r_offset == offset + 16))
7705 if (sec->size == offset + 24)
7710 if (rel == relend && sec->size == offset + 16)
7718 if (rel->r_offset == offset + 24)
7720 else if (rel->r_offset != offset + 16)
7722 else if (rel + 1 < relend
7723 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7724 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7729 else if (rel + 2 < relend
7730 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7731 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7740 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
7742 if (need_edit || add_aux_fields)
7744 Elf_Internal_Rela *write_rel;
7745 Elf_Internal_Shdr *rel_hdr;
7746 bfd_byte *rptr, *wptr;
7747 bfd_byte *new_contents;
7752 new_contents = NULL;
7753 amt = sec->size * sizeof (long) / 8;
7754 opd = &ppc64_elf_section_data (sec)->u.opd;
7755 opd->adjust = bfd_zalloc (sec->owner, amt);
7756 if (opd->adjust == NULL)
7758 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7760 /* This seems a waste of time as input .opd sections are all
7761 zeros as generated by gcc, but I suppose there's no reason
7762 this will always be so. We might start putting something in
7763 the third word of .opd entries. */
7764 if ((sec->flags & SEC_IN_MEMORY) == 0)
7767 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7772 if (local_syms != NULL
7773 && symtab_hdr->contents != (unsigned char *) local_syms)
7775 if (elf_section_data (sec)->relocs != relstart)
7779 sec->contents = loc;
7780 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7783 elf_section_data (sec)->relocs = relstart;
7785 new_contents = sec->contents;
7788 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7789 if (new_contents == NULL)
7793 wptr = new_contents;
7794 rptr = sec->contents;
7796 write_rel = relstart;
7800 for (rel = relstart; rel < relend; rel++)
7802 unsigned long r_symndx;
7804 struct elf_link_hash_entry *h;
7805 Elf_Internal_Sym *sym;
7807 r_symndx = ELF64_R_SYM (rel->r_info);
7808 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7812 if (rel->r_offset == offset)
7814 struct ppc_link_hash_entry *fdh = NULL;
7816 /* See if the .opd entry is full 24 byte or
7817 16 byte (with fd_aux entry overlapped with next
7820 if ((rel + 2 == relend && sec->size == offset + 16)
7821 || (rel + 3 < relend
7822 && rel[2].r_offset == offset + 16
7823 && rel[3].r_offset == offset + 24
7824 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7825 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7829 && h->root.root.string[0] == '.')
7831 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7833 && fdh->elf.root.type != bfd_link_hash_defined
7834 && fdh->elf.root.type != bfd_link_hash_defweak)
7838 skip = (sym_sec->owner != ibfd
7839 || sym_sec->output_section == bfd_abs_section_ptr);
7842 if (fdh != NULL && sym_sec->owner == ibfd)
7844 /* Arrange for the function descriptor sym
7846 fdh->elf.root.u.def.value = 0;
7847 fdh->elf.root.u.def.section = sym_sec;
7849 opd->adjust[rel->r_offset / 8] = -1;
7853 /* We'll be keeping this opd entry. */
7857 /* Redefine the function descriptor symbol to
7858 this location in the opd section. It is
7859 necessary to update the value here rather
7860 than using an array of adjustments as we do
7861 for local symbols, because various places
7862 in the generic ELF code use the value
7863 stored in u.def.value. */
7864 fdh->elf.root.u.def.value = wptr - new_contents;
7865 fdh->adjust_done = 1;
7868 /* Local syms are a bit tricky. We could
7869 tweak them as they can be cached, but
7870 we'd need to look through the local syms
7871 for the function descriptor sym which we
7872 don't have at the moment. So keep an
7873 array of adjustments. */
7874 opd->adjust[rel->r_offset / 8]
7875 = (wptr - new_contents) - (rptr - sec->contents);
7878 memcpy (wptr, rptr, opd_ent_size);
7879 wptr += opd_ent_size;
7880 if (add_aux_fields && opd_ent_size == 16)
7882 memset (wptr, '\0', 8);
7886 rptr += opd_ent_size;
7887 offset += opd_ent_size;
7893 && !info->relocatable
7894 && !dec_dynrel_count (rel->r_info, sec, info,
7900 /* We need to adjust any reloc offsets to point to the
7901 new opd entries. While we're at it, we may as well
7902 remove redundant relocs. */
7903 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7904 if (write_rel != rel)
7905 memcpy (write_rel, rel, sizeof (*rel));
7910 sec->size = wptr - new_contents;
7911 sec->reloc_count = write_rel - relstart;
7914 free (sec->contents);
7915 sec->contents = new_contents;
7918 /* Fudge the header size too, as this is used later in
7919 elf_bfd_final_link if we are emitting relocs. */
7920 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7921 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7924 else if (elf_section_data (sec)->relocs != relstart)
7927 if (local_syms != NULL
7928 && symtab_hdr->contents != (unsigned char *) local_syms)
7930 if (!info->keep_memory)
7933 symtab_hdr->contents = (unsigned char *) local_syms;
7938 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7940 /* If we are doing a final link and the last .opd entry is just 16 byte
7941 long, add a 8 byte padding after it. */
7942 if (need_pad != NULL && !info->relocatable)
7946 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7948 BFD_ASSERT (need_pad->size > 0);
7950 p = bfd_malloc (need_pad->size + 8);
7954 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7955 p, 0, need_pad->size))
7958 need_pad->contents = p;
7959 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7963 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7967 need_pad->contents = p;
7970 memset (need_pad->contents + need_pad->size, 0, 8);
7971 need_pad->size += 8;
7977 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7980 ppc64_elf_tls_setup (struct bfd_link_info *info)
7982 struct ppc_link_hash_table *htab;
7984 htab = ppc_hash_table (info);
7988 if (abiversion (info->output_bfd) == 1)
7991 if (htab->params->no_multi_toc)
7992 htab->do_multi_toc = 0;
7993 else if (!htab->do_multi_toc)
7994 htab->params->no_multi_toc = 1;
7996 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7997 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7998 FALSE, FALSE, TRUE));
7999 /* Move dynamic linking info to the function descriptor sym. */
8000 if (htab->tls_get_addr != NULL)
8001 func_desc_adjust (&htab->tls_get_addr->elf, info);
8002 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8003 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8004 FALSE, FALSE, TRUE));
8005 if (!htab->params->no_tls_get_addr_opt)
8007 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8009 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8010 FALSE, FALSE, TRUE);
8012 func_desc_adjust (opt, info);
8013 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8014 FALSE, FALSE, TRUE);
8016 && (opt_fd->root.type == bfd_link_hash_defined
8017 || opt_fd->root.type == bfd_link_hash_defweak))
8019 /* If glibc supports an optimized __tls_get_addr call stub,
8020 signalled by the presence of __tls_get_addr_opt, and we'll
8021 be calling __tls_get_addr via a plt call stub, then
8022 make __tls_get_addr point to __tls_get_addr_opt. */
8023 tga_fd = &htab->tls_get_addr_fd->elf;
8024 if (htab->elf.dynamic_sections_created
8026 && (tga_fd->type == STT_FUNC
8027 || tga_fd->needs_plt)
8028 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8029 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8030 && tga_fd->root.type == bfd_link_hash_undefweak)))
8032 struct plt_entry *ent;
8034 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8035 if (ent->plt.refcount > 0)
8039 tga_fd->root.type = bfd_link_hash_indirect;
8040 tga_fd->root.u.i.link = &opt_fd->root;
8041 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8042 if (opt_fd->dynindx != -1)
8044 /* Use __tls_get_addr_opt in dynamic relocations. */
8045 opt_fd->dynindx = -1;
8046 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8047 opt_fd->dynstr_index);
8048 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8051 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8052 tga = &htab->tls_get_addr->elf;
8053 if (opt != NULL && tga != NULL)
8055 tga->root.type = bfd_link_hash_indirect;
8056 tga->root.u.i.link = &opt->root;
8057 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8058 _bfd_elf_link_hash_hide_symbol (info, opt,
8060 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8062 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8063 htab->tls_get_addr_fd->is_func_descriptor = 1;
8064 if (htab->tls_get_addr != NULL)
8066 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8067 htab->tls_get_addr->is_func = 1;
8073 htab->params->no_tls_get_addr_opt = TRUE;
8075 return _bfd_elf_tls_setup (info->output_bfd, info);
8078 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8082 branch_reloc_hash_match (const bfd *ibfd,
8083 const Elf_Internal_Rela *rel,
8084 const struct ppc_link_hash_entry *hash1,
8085 const struct ppc_link_hash_entry *hash2)
8087 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8088 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8089 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8091 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8093 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8094 struct elf_link_hash_entry *h;
8096 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8097 h = elf_follow_link (h);
8098 if (h == &hash1->elf || h == &hash2->elf)
8104 /* Run through all the TLS relocs looking for optimization
8105 opportunities. The linker has been hacked (see ppc64elf.em) to do
8106 a preliminary section layout so that we know the TLS segment
8107 offsets. We can't optimize earlier because some optimizations need
8108 to know the tp offset, and we need to optimize before allocating
8109 dynamic relocations. */
8112 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8116 struct ppc_link_hash_table *htab;
8117 unsigned char *toc_ref;
8120 if (info->relocatable || !info->executable)
8123 htab = ppc_hash_table (info);
8127 /* Make two passes over the relocs. On the first pass, mark toc
8128 entries involved with tls relocs, and check that tls relocs
8129 involved in setting up a tls_get_addr call are indeed followed by
8130 such a call. If they are not, we can't do any tls optimization.
8131 On the second pass twiddle tls_mask flags to notify
8132 relocate_section that optimization can be done, and adjust got
8133 and plt refcounts. */
8135 for (pass = 0; pass < 2; ++pass)
8136 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8138 Elf_Internal_Sym *locsyms = NULL;
8139 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8141 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8142 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8144 Elf_Internal_Rela *relstart, *rel, *relend;
8145 bfd_boolean found_tls_get_addr_arg = 0;
8147 /* Read the relocations. */
8148 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8150 if (relstart == NULL)
8156 relend = relstart + sec->reloc_count;
8157 for (rel = relstart; rel < relend; rel++)
8159 enum elf_ppc64_reloc_type r_type;
8160 unsigned long r_symndx;
8161 struct elf_link_hash_entry *h;
8162 Elf_Internal_Sym *sym;
8164 unsigned char *tls_mask;
8165 unsigned char tls_set, tls_clear, tls_type = 0;
8167 bfd_boolean ok_tprel, is_local;
8168 long toc_ref_index = 0;
8169 int expecting_tls_get_addr = 0;
8170 bfd_boolean ret = FALSE;
8172 r_symndx = ELF64_R_SYM (rel->r_info);
8173 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8177 if (elf_section_data (sec)->relocs != relstart)
8179 if (toc_ref != NULL)
8182 && (elf_symtab_hdr (ibfd).contents
8183 != (unsigned char *) locsyms))
8190 if (h->root.type == bfd_link_hash_defined
8191 || h->root.type == bfd_link_hash_defweak)
8192 value = h->root.u.def.value;
8193 else if (h->root.type == bfd_link_hash_undefweak)
8197 found_tls_get_addr_arg = 0;
8202 /* Symbols referenced by TLS relocs must be of type
8203 STT_TLS. So no need for .opd local sym adjust. */
8204 value = sym->st_value;
8213 && h->root.type == bfd_link_hash_undefweak)
8217 value += sym_sec->output_offset;
8218 value += sym_sec->output_section->vma;
8219 value -= htab->elf.tls_sec->vma;
8220 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8221 < (bfd_vma) 1 << 32);
8225 r_type = ELF64_R_TYPE (rel->r_info);
8226 /* If this section has old-style __tls_get_addr calls
8227 without marker relocs, then check that each
8228 __tls_get_addr call reloc is preceded by a reloc
8229 that conceivably belongs to the __tls_get_addr arg
8230 setup insn. If we don't find matching arg setup
8231 relocs, don't do any tls optimization. */
8233 && sec->has_tls_get_addr_call
8235 && (h == &htab->tls_get_addr->elf
8236 || h == &htab->tls_get_addr_fd->elf)
8237 && !found_tls_get_addr_arg
8238 && is_branch_reloc (r_type))
8240 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8241 "TLS optimization disabled\n"),
8242 ibfd, sec, rel->r_offset);
8247 found_tls_get_addr_arg = 0;
8250 case R_PPC64_GOT_TLSLD16:
8251 case R_PPC64_GOT_TLSLD16_LO:
8252 expecting_tls_get_addr = 1;
8253 found_tls_get_addr_arg = 1;
8256 case R_PPC64_GOT_TLSLD16_HI:
8257 case R_PPC64_GOT_TLSLD16_HA:
8258 /* These relocs should never be against a symbol
8259 defined in a shared lib. Leave them alone if
8260 that turns out to be the case. */
8267 tls_type = TLS_TLS | TLS_LD;
8270 case R_PPC64_GOT_TLSGD16:
8271 case R_PPC64_GOT_TLSGD16_LO:
8272 expecting_tls_get_addr = 1;
8273 found_tls_get_addr_arg = 1;
8276 case R_PPC64_GOT_TLSGD16_HI:
8277 case R_PPC64_GOT_TLSGD16_HA:
8283 tls_set = TLS_TLS | TLS_TPRELGD;
8285 tls_type = TLS_TLS | TLS_GD;
8288 case R_PPC64_GOT_TPREL16_DS:
8289 case R_PPC64_GOT_TPREL16_LO_DS:
8290 case R_PPC64_GOT_TPREL16_HI:
8291 case R_PPC64_GOT_TPREL16_HA:
8296 tls_clear = TLS_TPREL;
8297 tls_type = TLS_TLS | TLS_TPREL;
8304 found_tls_get_addr_arg = 1;
8309 case R_PPC64_TOC16_LO:
8310 if (sym_sec == NULL || sym_sec != toc)
8313 /* Mark this toc entry as referenced by a TLS
8314 code sequence. We can do that now in the
8315 case of R_PPC64_TLS, and after checking for
8316 tls_get_addr for the TOC16 relocs. */
8317 if (toc_ref == NULL)
8318 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8319 if (toc_ref == NULL)
8323 value = h->root.u.def.value;
8325 value = sym->st_value;
8326 value += rel->r_addend;
8327 BFD_ASSERT (value < toc->size && value % 8 == 0);
8328 toc_ref_index = (value + toc->output_offset) / 8;
8329 if (r_type == R_PPC64_TLS
8330 || r_type == R_PPC64_TLSGD
8331 || r_type == R_PPC64_TLSLD)
8333 toc_ref[toc_ref_index] = 1;
8337 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8342 expecting_tls_get_addr = 2;
8345 case R_PPC64_TPREL64:
8349 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8354 tls_set = TLS_EXPLICIT;
8355 tls_clear = TLS_TPREL;
8360 case R_PPC64_DTPMOD64:
8364 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8366 if (rel + 1 < relend
8368 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8369 && rel[1].r_offset == rel->r_offset + 8)
8373 tls_set = TLS_EXPLICIT | TLS_GD;
8376 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8385 tls_set = TLS_EXPLICIT;
8396 if (!expecting_tls_get_addr
8397 || !sec->has_tls_get_addr_call)
8400 if (rel + 1 < relend
8401 && branch_reloc_hash_match (ibfd, rel + 1,
8403 htab->tls_get_addr_fd))
8405 if (expecting_tls_get_addr == 2)
8407 /* Check for toc tls entries. */
8408 unsigned char *toc_tls;
8411 retval = get_tls_mask (&toc_tls, NULL, NULL,
8416 if (toc_tls != NULL)
8418 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8419 found_tls_get_addr_arg = 1;
8421 toc_ref[toc_ref_index] = 1;
8427 if (expecting_tls_get_addr != 1)
8430 /* Uh oh, we didn't find the expected call. We
8431 could just mark this symbol to exclude it
8432 from tls optimization but it's safer to skip
8433 the entire optimization. */
8434 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8435 "TLS optimization disabled\n"),
8436 ibfd, sec, rel->r_offset);
8441 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8443 struct plt_entry *ent;
8444 for (ent = htab->tls_get_addr->elf.plt.plist;
8447 if (ent->addend == 0)
8449 if (ent->plt.refcount > 0)
8451 ent->plt.refcount -= 1;
8452 expecting_tls_get_addr = 0;
8458 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8460 struct plt_entry *ent;
8461 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8464 if (ent->addend == 0)
8466 if (ent->plt.refcount > 0)
8467 ent->plt.refcount -= 1;
8475 if ((tls_set & TLS_EXPLICIT) == 0)
8477 struct got_entry *ent;
8479 /* Adjust got entry for this reloc. */
8483 ent = elf_local_got_ents (ibfd)[r_symndx];
8485 for (; ent != NULL; ent = ent->next)
8486 if (ent->addend == rel->r_addend
8487 && ent->owner == ibfd
8488 && ent->tls_type == tls_type)
8495 /* We managed to get rid of a got entry. */
8496 if (ent->got.refcount > 0)
8497 ent->got.refcount -= 1;
8502 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8503 we'll lose one or two dyn relocs. */
8504 if (!dec_dynrel_count (rel->r_info, sec, info,
8508 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8510 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8516 *tls_mask |= tls_set;
8517 *tls_mask &= ~tls_clear;
8520 if (elf_section_data (sec)->relocs != relstart)
8525 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8527 if (!info->keep_memory)
8530 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8534 if (toc_ref != NULL)
8539 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8540 the values of any global symbols in a toc section that has been
8541 edited. Globals in toc sections should be a rarity, so this function
8542 sets a flag if any are found in toc sections other than the one just
8543 edited, so that futher hash table traversals can be avoided. */
8545 struct adjust_toc_info
8548 unsigned long *skip;
8549 bfd_boolean global_toc_syms;
8552 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8555 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8557 struct ppc_link_hash_entry *eh;
8558 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8561 if (h->root.type != bfd_link_hash_defined
8562 && h->root.type != bfd_link_hash_defweak)
8565 eh = (struct ppc_link_hash_entry *) h;
8566 if (eh->adjust_done)
8569 if (eh->elf.root.u.def.section == toc_inf->toc)
8571 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8572 i = toc_inf->toc->rawsize >> 3;
8574 i = eh->elf.root.u.def.value >> 3;
8576 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8578 (*_bfd_error_handler)
8579 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8582 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8583 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8586 eh->elf.root.u.def.value -= toc_inf->skip[i];
8587 eh->adjust_done = 1;
8589 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8590 toc_inf->global_toc_syms = TRUE;
8595 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8598 ok_lo_toc_insn (unsigned int insn)
8600 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8601 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8602 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8603 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8604 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8605 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8606 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8607 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8608 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8609 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8610 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8611 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8612 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8613 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8614 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8616 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8617 && ((insn & 3) == 0 || (insn & 3) == 3))
8618 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8621 /* Examine all relocs referencing .toc sections in order to remove
8622 unused .toc entries. */
8625 ppc64_elf_edit_toc (struct bfd_link_info *info)
8628 struct adjust_toc_info toc_inf;
8629 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8631 htab->do_toc_opt = 1;
8632 toc_inf.global_toc_syms = TRUE;
8633 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8635 asection *toc, *sec;
8636 Elf_Internal_Shdr *symtab_hdr;
8637 Elf_Internal_Sym *local_syms;
8638 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8639 unsigned long *skip, *drop;
8640 unsigned char *used;
8641 unsigned char *keep, last, some_unused;
8643 if (!is_ppc64_elf (ibfd))
8646 toc = bfd_get_section_by_name (ibfd, ".toc");
8649 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8650 || discarded_section (toc))
8655 symtab_hdr = &elf_symtab_hdr (ibfd);
8657 /* Look at sections dropped from the final link. */
8660 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8662 if (sec->reloc_count == 0
8663 || !discarded_section (sec)
8664 || get_opd_info (sec)
8665 || (sec->flags & SEC_ALLOC) == 0
8666 || (sec->flags & SEC_DEBUGGING) != 0)
8669 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8670 if (relstart == NULL)
8673 /* Run through the relocs to see which toc entries might be
8675 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8677 enum elf_ppc64_reloc_type r_type;
8678 unsigned long r_symndx;
8680 struct elf_link_hash_entry *h;
8681 Elf_Internal_Sym *sym;
8684 r_type = ELF64_R_TYPE (rel->r_info);
8691 case R_PPC64_TOC16_LO:
8692 case R_PPC64_TOC16_HI:
8693 case R_PPC64_TOC16_HA:
8694 case R_PPC64_TOC16_DS:
8695 case R_PPC64_TOC16_LO_DS:
8699 r_symndx = ELF64_R_SYM (rel->r_info);
8700 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8708 val = h->root.u.def.value;
8710 val = sym->st_value;
8711 val += rel->r_addend;
8713 if (val >= toc->size)
8716 /* Anything in the toc ought to be aligned to 8 bytes.
8717 If not, don't mark as unused. */
8723 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8728 skip[val >> 3] = ref_from_discarded;
8731 if (elf_section_data (sec)->relocs != relstart)
8735 /* For largetoc loads of address constants, we can convert
8736 . addis rx,2,addr@got@ha
8737 . ld ry,addr@got@l(rx)
8739 . addis rx,2,addr@toc@ha
8740 . addi ry,rx,addr@toc@l
8741 when addr is within 2G of the toc pointer. This then means
8742 that the word storing "addr" in the toc is no longer needed. */
8744 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8745 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8746 && toc->reloc_count != 0)
8748 /* Read toc relocs. */
8749 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8751 if (toc_relocs == NULL)
8754 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8756 enum elf_ppc64_reloc_type r_type;
8757 unsigned long r_symndx;
8759 struct elf_link_hash_entry *h;
8760 Elf_Internal_Sym *sym;
8763 r_type = ELF64_R_TYPE (rel->r_info);
8764 if (r_type != R_PPC64_ADDR64)
8767 r_symndx = ELF64_R_SYM (rel->r_info);
8768 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8773 || discarded_section (sym_sec))
8776 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8781 if (h->type == STT_GNU_IFUNC)
8783 val = h->root.u.def.value;
8787 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8789 val = sym->st_value;
8791 val += rel->r_addend;
8792 val += sym_sec->output_section->vma + sym_sec->output_offset;
8794 /* We don't yet know the exact toc pointer value, but we
8795 know it will be somewhere in the toc section. Don't
8796 optimize if the difference from any possible toc
8797 pointer is outside [ff..f80008000, 7fff7fff]. */
8798 addr = toc->output_section->vma + TOC_BASE_OFF;
8799 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8802 addr = toc->output_section->vma + toc->output_section->rawsize;
8803 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8808 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8813 skip[rel->r_offset >> 3]
8814 |= can_optimize | ((rel - toc_relocs) << 2);
8821 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8825 if (local_syms != NULL
8826 && symtab_hdr->contents != (unsigned char *) local_syms)
8830 && elf_section_data (sec)->relocs != relstart)
8832 if (toc_relocs != NULL
8833 && elf_section_data (toc)->relocs != toc_relocs)
8840 /* Now check all kept sections that might reference the toc.
8841 Check the toc itself last. */
8842 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8845 sec = (sec == toc ? NULL
8846 : sec->next == NULL ? toc
8847 : sec->next == toc && toc->next ? toc->next
8852 if (sec->reloc_count == 0
8853 || discarded_section (sec)
8854 || get_opd_info (sec)
8855 || (sec->flags & SEC_ALLOC) == 0
8856 || (sec->flags & SEC_DEBUGGING) != 0)
8859 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8861 if (relstart == NULL)
8867 /* Mark toc entries referenced as used. */
8871 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8873 enum elf_ppc64_reloc_type r_type;
8874 unsigned long r_symndx;
8876 struct elf_link_hash_entry *h;
8877 Elf_Internal_Sym *sym;
8879 enum {no_check, check_lo, check_ha} insn_check;
8881 r_type = ELF64_R_TYPE (rel->r_info);
8885 insn_check = no_check;
8888 case R_PPC64_GOT_TLSLD16_HA:
8889 case R_PPC64_GOT_TLSGD16_HA:
8890 case R_PPC64_GOT_TPREL16_HA:
8891 case R_PPC64_GOT_DTPREL16_HA:
8892 case R_PPC64_GOT16_HA:
8893 case R_PPC64_TOC16_HA:
8894 insn_check = check_ha;
8897 case R_PPC64_GOT_TLSLD16_LO:
8898 case R_PPC64_GOT_TLSGD16_LO:
8899 case R_PPC64_GOT_TPREL16_LO_DS:
8900 case R_PPC64_GOT_DTPREL16_LO_DS:
8901 case R_PPC64_GOT16_LO:
8902 case R_PPC64_GOT16_LO_DS:
8903 case R_PPC64_TOC16_LO:
8904 case R_PPC64_TOC16_LO_DS:
8905 insn_check = check_lo;
8909 if (insn_check != no_check)
8911 bfd_vma off = rel->r_offset & ~3;
8912 unsigned char buf[4];
8915 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8920 insn = bfd_get_32 (ibfd, buf);
8921 if (insn_check == check_lo
8922 ? !ok_lo_toc_insn (insn)
8923 : ((insn & ((0x3f << 26) | 0x1f << 16))
8924 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8928 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8929 sprintf (str, "%#08x", insn);
8930 info->callbacks->einfo
8931 (_("%P: %H: toc optimization is not supported for"
8932 " %s instruction.\n"),
8933 ibfd, sec, rel->r_offset & ~3, str);
8940 case R_PPC64_TOC16_LO:
8941 case R_PPC64_TOC16_HI:
8942 case R_PPC64_TOC16_HA:
8943 case R_PPC64_TOC16_DS:
8944 case R_PPC64_TOC16_LO_DS:
8945 /* In case we're taking addresses of toc entries. */
8946 case R_PPC64_ADDR64:
8953 r_symndx = ELF64_R_SYM (rel->r_info);
8954 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8965 val = h->root.u.def.value;
8967 val = sym->st_value;
8968 val += rel->r_addend;
8970 if (val >= toc->size)
8973 if ((skip[val >> 3] & can_optimize) != 0)
8980 case R_PPC64_TOC16_HA:
8983 case R_PPC64_TOC16_LO_DS:
8984 off = rel->r_offset;
8985 off += (bfd_big_endian (ibfd) ? -2 : 3);
8986 if (!bfd_get_section_contents (ibfd, sec, &opc,
8992 if ((opc & (0x3f << 2)) == (58u << 2))
8997 /* Wrong sort of reloc, or not a ld. We may
8998 as well clear ref_from_discarded too. */
9005 /* For the toc section, we only mark as used if this
9006 entry itself isn't unused. */
9007 else if ((used[rel->r_offset >> 3]
9008 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9011 /* Do all the relocs again, to catch reference
9020 if (elf_section_data (sec)->relocs != relstart)
9024 /* Merge the used and skip arrays. Assume that TOC
9025 doublewords not appearing as either used or unused belong
9026 to to an entry more than one doubleword in size. */
9027 for (drop = skip, keep = used, last = 0, some_unused = 0;
9028 drop < skip + (toc->size + 7) / 8;
9033 *drop &= ~ref_from_discarded;
9034 if ((*drop & can_optimize) != 0)
9038 else if ((*drop & ref_from_discarded) != 0)
9041 last = ref_from_discarded;
9051 bfd_byte *contents, *src;
9053 Elf_Internal_Sym *sym;
9054 bfd_boolean local_toc_syms = FALSE;
9056 /* Shuffle the toc contents, and at the same time convert the
9057 skip array from booleans into offsets. */
9058 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9061 elf_section_data (toc)->this_hdr.contents = contents;
9063 for (src = contents, off = 0, drop = skip;
9064 src < contents + toc->size;
9067 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9072 memcpy (src - off, src, 8);
9076 toc->rawsize = toc->size;
9077 toc->size = src - contents - off;
9079 /* Adjust addends for relocs against the toc section sym,
9080 and optimize any accesses we can. */
9081 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9083 if (sec->reloc_count == 0
9084 || discarded_section (sec))
9087 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9089 if (relstart == NULL)
9092 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9094 enum elf_ppc64_reloc_type r_type;
9095 unsigned long r_symndx;
9097 struct elf_link_hash_entry *h;
9100 r_type = ELF64_R_TYPE (rel->r_info);
9107 case R_PPC64_TOC16_LO:
9108 case R_PPC64_TOC16_HI:
9109 case R_PPC64_TOC16_HA:
9110 case R_PPC64_TOC16_DS:
9111 case R_PPC64_TOC16_LO_DS:
9112 case R_PPC64_ADDR64:
9116 r_symndx = ELF64_R_SYM (rel->r_info);
9117 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9125 val = h->root.u.def.value;
9128 val = sym->st_value;
9130 local_toc_syms = TRUE;
9133 val += rel->r_addend;
9135 if (val > toc->rawsize)
9137 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9139 else if ((skip[val >> 3] & can_optimize) != 0)
9141 Elf_Internal_Rela *tocrel
9142 = toc_relocs + (skip[val >> 3] >> 2);
9143 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9147 case R_PPC64_TOC16_HA:
9148 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9151 case R_PPC64_TOC16_LO_DS:
9152 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9156 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9158 info->callbacks->einfo
9159 (_("%P: %H: %s references "
9160 "optimized away TOC entry\n"),
9161 ibfd, sec, rel->r_offset,
9162 ppc64_elf_howto_table[r_type]->name);
9163 bfd_set_error (bfd_error_bad_value);
9166 rel->r_addend = tocrel->r_addend;
9167 elf_section_data (sec)->relocs = relstart;
9171 if (h != NULL || sym->st_value != 0)
9174 rel->r_addend -= skip[val >> 3];
9175 elf_section_data (sec)->relocs = relstart;
9178 if (elf_section_data (sec)->relocs != relstart)
9182 /* We shouldn't have local or global symbols defined in the TOC,
9183 but handle them anyway. */
9184 if (local_syms != NULL)
9185 for (sym = local_syms;
9186 sym < local_syms + symtab_hdr->sh_info;
9188 if (sym->st_value != 0
9189 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9193 if (sym->st_value > toc->rawsize)
9194 i = toc->rawsize >> 3;
9196 i = sym->st_value >> 3;
9198 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9201 (*_bfd_error_handler)
9202 (_("%s defined on removed toc entry"),
9203 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9206 while ((skip[i] & (ref_from_discarded | can_optimize)));
9207 sym->st_value = (bfd_vma) i << 3;
9210 sym->st_value -= skip[i];
9211 symtab_hdr->contents = (unsigned char *) local_syms;
9214 /* Adjust any global syms defined in this toc input section. */
9215 if (toc_inf.global_toc_syms)
9218 toc_inf.skip = skip;
9219 toc_inf.global_toc_syms = FALSE;
9220 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9224 if (toc->reloc_count != 0)
9226 Elf_Internal_Shdr *rel_hdr;
9227 Elf_Internal_Rela *wrel;
9230 /* Remove unused toc relocs, and adjust those we keep. */
9231 if (toc_relocs == NULL)
9232 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9234 if (toc_relocs == NULL)
9238 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9239 if ((skip[rel->r_offset >> 3]
9240 & (ref_from_discarded | can_optimize)) == 0)
9242 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9243 wrel->r_info = rel->r_info;
9244 wrel->r_addend = rel->r_addend;
9247 else if (!dec_dynrel_count (rel->r_info, toc, info,
9248 &local_syms, NULL, NULL))
9251 elf_section_data (toc)->relocs = toc_relocs;
9252 toc->reloc_count = wrel - toc_relocs;
9253 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9254 sz = rel_hdr->sh_entsize;
9255 rel_hdr->sh_size = toc->reloc_count * sz;
9258 else if (toc_relocs != NULL
9259 && elf_section_data (toc)->relocs != toc_relocs)
9262 if (local_syms != NULL
9263 && symtab_hdr->contents != (unsigned char *) local_syms)
9265 if (!info->keep_memory)
9268 symtab_hdr->contents = (unsigned char *) local_syms;
9276 /* Return true iff input section I references the TOC using
9277 instructions limited to +/-32k offsets. */
9280 ppc64_elf_has_small_toc_reloc (asection *i)
9282 return (is_ppc64_elf (i->owner)
9283 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9286 /* Allocate space for one GOT entry. */
9289 allocate_got (struct elf_link_hash_entry *h,
9290 struct bfd_link_info *info,
9291 struct got_entry *gent)
9293 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9295 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9296 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9298 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9299 ? 2 : 1) * sizeof (Elf64_External_Rela);
9300 asection *got = ppc64_elf_tdata (gent->owner)->got;
9302 gent->got.offset = got->size;
9303 got->size += entsize;
9305 dyn = htab->elf.dynamic_sections_created;
9306 if (h->type == STT_GNU_IFUNC)
9308 htab->elf.irelplt->size += rentsize;
9309 htab->got_reli_size += rentsize;
9311 else if ((info->shared
9312 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9313 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9314 || h->root.type != bfd_link_hash_undefweak))
9316 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9317 relgot->size += rentsize;
9321 /* This function merges got entries in the same toc group. */
9324 merge_got_entries (struct got_entry **pent)
9326 struct got_entry *ent, *ent2;
9328 for (ent = *pent; ent != NULL; ent = ent->next)
9329 if (!ent->is_indirect)
9330 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9331 if (!ent2->is_indirect
9332 && ent2->addend == ent->addend
9333 && ent2->tls_type == ent->tls_type
9334 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9336 ent2->is_indirect = TRUE;
9337 ent2->got.ent = ent;
9341 /* Allocate space in .plt, .got and associated reloc sections for
9345 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9347 struct bfd_link_info *info;
9348 struct ppc_link_hash_table *htab;
9350 struct ppc_link_hash_entry *eh;
9351 struct elf_dyn_relocs *p;
9352 struct got_entry **pgent, *gent;
9354 if (h->root.type == bfd_link_hash_indirect)
9357 info = (struct bfd_link_info *) inf;
9358 htab = ppc_hash_table (info);
9362 if ((htab->elf.dynamic_sections_created
9364 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9365 || h->type == STT_GNU_IFUNC)
9367 struct plt_entry *pent;
9368 bfd_boolean doneone = FALSE;
9369 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9370 if (pent->plt.refcount > 0)
9372 if (!htab->elf.dynamic_sections_created
9373 || h->dynindx == -1)
9376 pent->plt.offset = s->size;
9377 s->size += PLT_ENTRY_SIZE (htab);
9378 s = htab->elf.irelplt;
9382 /* If this is the first .plt entry, make room for the special
9386 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9388 pent->plt.offset = s->size;
9390 /* Make room for this entry. */
9391 s->size += PLT_ENTRY_SIZE (htab);
9393 /* Make room for the .glink code. */
9396 s->size += GLINK_CALL_STUB_SIZE;
9399 /* We need bigger stubs past index 32767. */
9400 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9407 /* We also need to make an entry in the .rela.plt section. */
9408 s = htab->elf.srelplt;
9410 s->size += sizeof (Elf64_External_Rela);
9414 pent->plt.offset = (bfd_vma) -1;
9417 h->plt.plist = NULL;
9423 h->plt.plist = NULL;
9427 eh = (struct ppc_link_hash_entry *) h;
9428 /* Run through the TLS GD got entries first if we're changing them
9430 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9431 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9432 if (gent->got.refcount > 0
9433 && (gent->tls_type & TLS_GD) != 0)
9435 /* This was a GD entry that has been converted to TPREL. If
9436 there happens to be a TPREL entry we can use that one. */
9437 struct got_entry *ent;
9438 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9439 if (ent->got.refcount > 0
9440 && (ent->tls_type & TLS_TPREL) != 0
9441 && ent->addend == gent->addend
9442 && ent->owner == gent->owner)
9444 gent->got.refcount = 0;
9448 /* If not, then we'll be using our own TPREL entry. */
9449 if (gent->got.refcount != 0)
9450 gent->tls_type = TLS_TLS | TLS_TPREL;
9453 /* Remove any list entry that won't generate a word in the GOT before
9454 we call merge_got_entries. Otherwise we risk merging to empty
9456 pgent = &h->got.glist;
9457 while ((gent = *pgent) != NULL)
9458 if (gent->got.refcount > 0)
9460 if ((gent->tls_type & TLS_LD) != 0
9463 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9464 *pgent = gent->next;
9467 pgent = &gent->next;
9470 *pgent = gent->next;
9472 if (!htab->do_multi_toc)
9473 merge_got_entries (&h->got.glist);
9475 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9476 if (!gent->is_indirect)
9478 /* Make sure this symbol is output as a dynamic symbol.
9479 Undefined weak syms won't yet be marked as dynamic,
9480 nor will all TLS symbols. */
9481 if (h->dynindx == -1
9483 && h->type != STT_GNU_IFUNC
9484 && htab->elf.dynamic_sections_created)
9486 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9490 if (!is_ppc64_elf (gent->owner))
9493 allocate_got (h, info, gent);
9496 if (eh->dyn_relocs == NULL
9497 || (!htab->elf.dynamic_sections_created
9498 && h->type != STT_GNU_IFUNC))
9501 /* In the shared -Bsymbolic case, discard space allocated for
9502 dynamic pc-relative relocs against symbols which turn out to be
9503 defined in regular objects. For the normal shared case, discard
9504 space for relocs that have become local due to symbol visibility
9509 /* Relocs that use pc_count are those that appear on a call insn,
9510 or certain REL relocs (see must_be_dyn_reloc) that can be
9511 generated via assembly. We want calls to protected symbols to
9512 resolve directly to the function rather than going via the plt.
9513 If people want function pointer comparisons to work as expected
9514 then they should avoid writing weird assembly. */
9515 if (SYMBOL_CALLS_LOCAL (info, h))
9517 struct elf_dyn_relocs **pp;
9519 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9521 p->count -= p->pc_count;
9530 /* Also discard relocs on undefined weak syms with non-default
9532 if (eh->dyn_relocs != NULL
9533 && h->root.type == bfd_link_hash_undefweak)
9535 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9536 eh->dyn_relocs = NULL;
9538 /* Make sure this symbol is output as a dynamic symbol.
9539 Undefined weak syms won't yet be marked as dynamic. */
9540 else if (h->dynindx == -1
9541 && !h->forced_local)
9543 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9548 else if (h->type == STT_GNU_IFUNC)
9550 if (!h->non_got_ref)
9551 eh->dyn_relocs = NULL;
9553 else if (ELIMINATE_COPY_RELOCS)
9555 /* For the non-shared case, discard space for relocs against
9556 symbols which turn out to need copy relocs or are not
9562 /* Make sure this symbol is output as a dynamic symbol.
9563 Undefined weak syms won't yet be marked as dynamic. */
9564 if (h->dynindx == -1
9565 && !h->forced_local)
9567 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9571 /* If that succeeded, we know we'll be keeping all the
9573 if (h->dynindx != -1)
9577 eh->dyn_relocs = NULL;
9582 /* Finally, allocate space. */
9583 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9585 asection *sreloc = elf_section_data (p->sec)->sreloc;
9586 if (eh->elf.type == STT_GNU_IFUNC)
9587 sreloc = htab->elf.irelplt;
9588 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9594 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9595 to set up space for global entry stubs. These are put in glink,
9596 after the branch table. */
9599 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9601 struct bfd_link_info *info;
9602 struct ppc_link_hash_table *htab;
9603 struct plt_entry *pent;
9606 if (h->root.type == bfd_link_hash_indirect)
9609 if (!h->pointer_equality_needed)
9616 htab = ppc_hash_table (info);
9621 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9622 if (pent->plt.offset != (bfd_vma) -1
9623 && pent->addend == 0)
9625 /* For ELFv2, if this symbol is not defined in a regular file
9626 and we are not generating a shared library or pie, then we
9627 need to define the symbol in the executable on a call stub.
9628 This is to avoid text relocations. */
9629 s->size = (s->size + 15) & -16;
9630 h->root.u.def.section = s;
9631 h->root.u.def.value = s->size;
9638 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9639 read-only sections. */
9642 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9644 if (h->root.type == bfd_link_hash_indirect)
9647 if (readonly_dynrelocs (h))
9649 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9651 /* Not an error, just cut short the traversal. */
9657 /* Set the sizes of the dynamic sections. */
9660 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9661 struct bfd_link_info *info)
9663 struct ppc_link_hash_table *htab;
9668 struct got_entry *first_tlsld;
9670 htab = ppc_hash_table (info);
9674 dynobj = htab->elf.dynobj;
9678 if (htab->elf.dynamic_sections_created)
9680 /* Set the contents of the .interp section to the interpreter. */
9681 if (info->executable)
9683 s = bfd_get_linker_section (dynobj, ".interp");
9686 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9687 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9691 /* Set up .got offsets for local syms, and space for local dynamic
9693 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9695 struct got_entry **lgot_ents;
9696 struct got_entry **end_lgot_ents;
9697 struct plt_entry **local_plt;
9698 struct plt_entry **end_local_plt;
9699 unsigned char *lgot_masks;
9700 bfd_size_type locsymcount;
9701 Elf_Internal_Shdr *symtab_hdr;
9703 if (!is_ppc64_elf (ibfd))
9706 for (s = ibfd->sections; s != NULL; s = s->next)
9708 struct ppc_dyn_relocs *p;
9710 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9712 if (!bfd_is_abs_section (p->sec)
9713 && bfd_is_abs_section (p->sec->output_section))
9715 /* Input section has been discarded, either because
9716 it is a copy of a linkonce section or due to
9717 linker script /DISCARD/, so we'll be discarding
9720 else if (p->count != 0)
9722 asection *srel = elf_section_data (p->sec)->sreloc;
9724 srel = htab->elf.irelplt;
9725 srel->size += p->count * sizeof (Elf64_External_Rela);
9726 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9727 info->flags |= DF_TEXTREL;
9732 lgot_ents = elf_local_got_ents (ibfd);
9736 symtab_hdr = &elf_symtab_hdr (ibfd);
9737 locsymcount = symtab_hdr->sh_info;
9738 end_lgot_ents = lgot_ents + locsymcount;
9739 local_plt = (struct plt_entry **) end_lgot_ents;
9740 end_local_plt = local_plt + locsymcount;
9741 lgot_masks = (unsigned char *) end_local_plt;
9742 s = ppc64_elf_tdata (ibfd)->got;
9743 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9745 struct got_entry **pent, *ent;
9748 while ((ent = *pent) != NULL)
9749 if (ent->got.refcount > 0)
9751 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9753 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9758 unsigned int ent_size = 8;
9759 unsigned int rel_size = sizeof (Elf64_External_Rela);
9761 ent->got.offset = s->size;
9762 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9767 s->size += ent_size;
9768 if ((*lgot_masks & PLT_IFUNC) != 0)
9770 htab->elf.irelplt->size += rel_size;
9771 htab->got_reli_size += rel_size;
9773 else if (info->shared)
9775 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9776 srel->size += rel_size;
9785 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9786 for (; local_plt < end_local_plt; ++local_plt)
9788 struct plt_entry *ent;
9790 for (ent = *local_plt; ent != NULL; ent = ent->next)
9791 if (ent->plt.refcount > 0)
9794 ent->plt.offset = s->size;
9795 s->size += PLT_ENTRY_SIZE (htab);
9797 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9800 ent->plt.offset = (bfd_vma) -1;
9804 /* Allocate global sym .plt and .got entries, and space for global
9805 sym dynamic relocs. */
9806 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9807 /* Stash the end of glink branch table. */
9808 if (htab->glink != NULL)
9809 htab->glink->rawsize = htab->glink->size;
9811 if (!htab->opd_abi && !info->shared)
9812 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9815 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9817 struct got_entry *ent;
9819 if (!is_ppc64_elf (ibfd))
9822 ent = ppc64_tlsld_got (ibfd);
9823 if (ent->got.refcount > 0)
9825 if (!htab->do_multi_toc && first_tlsld != NULL)
9827 ent->is_indirect = TRUE;
9828 ent->got.ent = first_tlsld;
9832 if (first_tlsld == NULL)
9834 s = ppc64_elf_tdata (ibfd)->got;
9835 ent->got.offset = s->size;
9840 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9841 srel->size += sizeof (Elf64_External_Rela);
9846 ent->got.offset = (bfd_vma) -1;
9849 /* We now have determined the sizes of the various dynamic sections.
9850 Allocate memory for them. */
9852 for (s = dynobj->sections; s != NULL; s = s->next)
9854 if ((s->flags & SEC_LINKER_CREATED) == 0)
9857 if (s == htab->brlt || s == htab->relbrlt)
9858 /* These haven't been allocated yet; don't strip. */
9860 else if (s == htab->elf.sgot
9861 || s == htab->elf.splt
9862 || s == htab->elf.iplt
9864 || s == htab->dynbss)
9866 /* Strip this section if we don't need it; see the
9869 else if (s == htab->glink_eh_frame)
9871 if (!bfd_is_abs_section (s->output_section))
9872 /* Not sized yet. */
9875 else if (CONST_STRNEQ (s->name, ".rela"))
9879 if (s != htab->elf.srelplt)
9882 /* We use the reloc_count field as a counter if we need
9883 to copy relocs into the output file. */
9889 /* It's not one of our sections, so don't allocate space. */
9895 /* If we don't need this section, strip it from the
9896 output file. This is mostly to handle .rela.bss and
9897 .rela.plt. We must create both sections in
9898 create_dynamic_sections, because they must be created
9899 before the linker maps input sections to output
9900 sections. The linker does that before
9901 adjust_dynamic_symbol is called, and it is that
9902 function which decides whether anything needs to go
9903 into these sections. */
9904 s->flags |= SEC_EXCLUDE;
9908 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9911 /* Allocate memory for the section contents. We use bfd_zalloc
9912 here in case unused entries are not reclaimed before the
9913 section's contents are written out. This should not happen,
9914 but this way if it does we get a R_PPC64_NONE reloc in .rela
9915 sections instead of garbage.
9916 We also rely on the section contents being zero when writing
9918 s->contents = bfd_zalloc (dynobj, s->size);
9919 if (s->contents == NULL)
9923 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9925 if (!is_ppc64_elf (ibfd))
9928 s = ppc64_elf_tdata (ibfd)->got;
9929 if (s != NULL && s != htab->elf.sgot)
9932 s->flags |= SEC_EXCLUDE;
9935 s->contents = bfd_zalloc (ibfd, s->size);
9936 if (s->contents == NULL)
9940 s = ppc64_elf_tdata (ibfd)->relgot;
9944 s->flags |= SEC_EXCLUDE;
9947 s->contents = bfd_zalloc (ibfd, s->size);
9948 if (s->contents == NULL)
9956 if (htab->elf.dynamic_sections_created)
9958 bfd_boolean tls_opt;
9960 /* Add some entries to the .dynamic section. We fill in the
9961 values later, in ppc64_elf_finish_dynamic_sections, but we
9962 must add the entries now so that we get the correct size for
9963 the .dynamic section. The DT_DEBUG entry is filled in by the
9964 dynamic linker and used by the debugger. */
9965 #define add_dynamic_entry(TAG, VAL) \
9966 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9968 if (info->executable)
9970 if (!add_dynamic_entry (DT_DEBUG, 0))
9974 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9976 if (!add_dynamic_entry (DT_PLTGOT, 0)
9977 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9978 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9979 || !add_dynamic_entry (DT_JMPREL, 0)
9980 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9984 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9986 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9987 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9991 tls_opt = (!htab->params->no_tls_get_addr_opt
9992 && htab->tls_get_addr_fd != NULL
9993 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9994 if (tls_opt || !htab->opd_abi)
9996 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10002 if (!add_dynamic_entry (DT_RELA, 0)
10003 || !add_dynamic_entry (DT_RELASZ, 0)
10004 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10007 /* If any dynamic relocs apply to a read-only section,
10008 then we need a DT_TEXTREL entry. */
10009 if ((info->flags & DF_TEXTREL) == 0)
10010 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10012 if ((info->flags & DF_TEXTREL) != 0)
10014 if (!add_dynamic_entry (DT_TEXTREL, 0))
10019 #undef add_dynamic_entry
10024 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10027 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10029 if (h->plt.plist != NULL
10031 && !h->pointer_equality_needed)
10034 return _bfd_elf_hash_symbol (h);
10037 /* Determine the type of stub needed, if any, for a call. */
10039 static inline enum ppc_stub_type
10040 ppc_type_of_stub (asection *input_sec,
10041 const Elf_Internal_Rela *rel,
10042 struct ppc_link_hash_entry **hash,
10043 struct plt_entry **plt_ent,
10044 bfd_vma destination,
10045 unsigned long local_off)
10047 struct ppc_link_hash_entry *h = *hash;
10049 bfd_vma branch_offset;
10050 bfd_vma max_branch_offset;
10051 enum elf_ppc64_reloc_type r_type;
10055 struct plt_entry *ent;
10056 struct ppc_link_hash_entry *fdh = h;
10058 && h->oh->is_func_descriptor)
10060 fdh = ppc_follow_link (h->oh);
10064 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10065 if (ent->addend == rel->r_addend
10066 && ent->plt.offset != (bfd_vma) -1)
10069 return ppc_stub_plt_call;
10072 /* Here, we know we don't have a plt entry. If we don't have a
10073 either a defined function descriptor or a defined entry symbol
10074 in a regular object file, then it is pointless trying to make
10075 any other type of stub. */
10076 if (!is_static_defined (&fdh->elf)
10077 && !is_static_defined (&h->elf))
10078 return ppc_stub_none;
10080 else if (elf_local_got_ents (input_sec->owner) != NULL)
10082 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10083 struct plt_entry **local_plt = (struct plt_entry **)
10084 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10085 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10087 if (local_plt[r_symndx] != NULL)
10089 struct plt_entry *ent;
10091 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10092 if (ent->addend == rel->r_addend
10093 && ent->plt.offset != (bfd_vma) -1)
10096 return ppc_stub_plt_call;
10101 /* Determine where the call point is. */
10102 location = (input_sec->output_offset
10103 + input_sec->output_section->vma
10106 branch_offset = destination - location;
10107 r_type = ELF64_R_TYPE (rel->r_info);
10109 /* Determine if a long branch stub is needed. */
10110 max_branch_offset = 1 << 25;
10111 if (r_type != R_PPC64_REL24)
10112 max_branch_offset = 1 << 15;
10114 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10115 /* We need a stub. Figure out whether a long_branch or plt_branch
10116 is needed later. */
10117 return ppc_stub_long_branch;
10119 return ppc_stub_none;
10122 /* With power7 weakly ordered memory model, it is possible for ld.so
10123 to update a plt entry in one thread and have another thread see a
10124 stale zero toc entry. To avoid this we need some sort of acquire
10125 barrier in the call stub. One solution is to make the load of the
10126 toc word seem to appear to depend on the load of the function entry
10127 word. Another solution is to test for r2 being zero, and branch to
10128 the appropriate glink entry if so.
10130 . fake dep barrier compare
10131 . ld 12,xxx(2) ld 12,xxx(2)
10132 . mtctr 12 mtctr 12
10133 . xor 11,12,12 ld 2,xxx+8(2)
10134 . add 2,2,11 cmpldi 2,0
10135 . ld 2,xxx+8(2) bnectr+
10136 . bctr b <glink_entry>
10138 The solution involving the compare turns out to be faster, so
10139 that's what we use unless the branch won't reach. */
10141 #define ALWAYS_USE_FAKE_DEP 0
10142 #define ALWAYS_EMIT_R2SAVE 0
10144 #define PPC_LO(v) ((v) & 0xffff)
10145 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10146 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10148 static inline unsigned int
10149 plt_stub_size (struct ppc_link_hash_table *htab,
10150 struct ppc_stub_hash_entry *stub_entry,
10153 unsigned size = 12;
10155 if (ALWAYS_EMIT_R2SAVE
10156 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10158 if (PPC_HA (off) != 0)
10163 if (htab->params->plt_static_chain)
10165 if (htab->params->plt_thread_safe)
10167 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10170 if (stub_entry->h != NULL
10171 && (stub_entry->h == htab->tls_get_addr_fd
10172 || stub_entry->h == htab->tls_get_addr)
10173 && !htab->params->no_tls_get_addr_opt)
10178 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10179 then return the padding needed to do so. */
10180 static inline unsigned int
10181 plt_stub_pad (struct ppc_link_hash_table *htab,
10182 struct ppc_stub_hash_entry *stub_entry,
10185 int stub_align = 1 << htab->params->plt_stub_align;
10186 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10187 bfd_vma stub_off = stub_entry->stub_sec->size;
10189 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10190 > (stub_size & -stub_align))
10191 return stub_align - (stub_off & (stub_align - 1));
10195 /* Build a .plt call stub. */
10197 static inline bfd_byte *
10198 build_plt_stub (struct ppc_link_hash_table *htab,
10199 struct ppc_stub_hash_entry *stub_entry,
10200 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10202 bfd *obfd = htab->params->stub_bfd;
10203 bfd_boolean plt_load_toc = htab->opd_abi;
10204 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10205 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
10206 bfd_boolean use_fake_dep = plt_thread_safe;
10207 bfd_vma cmp_branch_off = 0;
10209 if (!ALWAYS_USE_FAKE_DEP
10212 && !(stub_entry->h != NULL
10213 && (stub_entry->h == htab->tls_get_addr_fd
10214 || stub_entry->h == htab->tls_get_addr)
10215 && !htab->params->no_tls_get_addr_opt))
10217 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10218 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10219 / PLT_ENTRY_SIZE (htab));
10220 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10223 if (pltindex > 32768)
10224 glinkoff += (pltindex - 32768) * 4;
10226 + htab->glink->output_offset
10227 + htab->glink->output_section->vma);
10228 from = (p - stub_entry->stub_sec->contents
10229 + 4 * (ALWAYS_EMIT_R2SAVE
10230 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10231 + 4 * (PPC_HA (offset) != 0)
10232 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10233 != PPC_HA (offset))
10234 + 4 * (plt_static_chain != 0)
10236 + stub_entry->stub_sec->output_offset
10237 + stub_entry->stub_sec->output_section->vma);
10238 cmp_branch_off = to - from;
10239 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10242 if (PPC_HA (offset) != 0)
10246 if (ALWAYS_EMIT_R2SAVE
10247 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10248 r[0].r_offset += 4;
10249 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10250 r[1].r_offset = r[0].r_offset + 4;
10251 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10252 r[1].r_addend = r[0].r_addend;
10255 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10257 r[2].r_offset = r[1].r_offset + 4;
10258 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10259 r[2].r_addend = r[0].r_addend;
10263 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10264 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10265 r[2].r_addend = r[0].r_addend + 8;
10266 if (plt_static_chain)
10268 r[3].r_offset = r[2].r_offset + 4;
10269 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10270 r[3].r_addend = r[0].r_addend + 16;
10275 if (ALWAYS_EMIT_R2SAVE
10276 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10277 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10280 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10281 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10285 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10286 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10289 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10291 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10294 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10299 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10300 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10302 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10303 if (plt_static_chain)
10304 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10311 if (ALWAYS_EMIT_R2SAVE
10312 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10313 r[0].r_offset += 4;
10314 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10317 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10319 r[1].r_offset = r[0].r_offset + 4;
10320 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10321 r[1].r_addend = r[0].r_addend;
10325 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10326 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10327 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10328 if (plt_static_chain)
10330 r[2].r_offset = r[1].r_offset + 4;
10331 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10332 r[2].r_addend = r[0].r_addend + 8;
10337 if (ALWAYS_EMIT_R2SAVE
10338 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10339 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10340 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10342 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10344 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10347 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10352 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10353 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10355 if (plt_static_chain)
10356 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10357 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10360 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10362 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10363 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10364 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10367 bfd_put_32 (obfd, BCTR, p), p += 4;
10371 /* Build a special .plt call stub for __tls_get_addr. */
10373 #define LD_R11_0R3 0xe9630000
10374 #define LD_R12_0R3 0xe9830000
10375 #define MR_R0_R3 0x7c601b78
10376 #define CMPDI_R11_0 0x2c2b0000
10377 #define ADD_R3_R12_R13 0x7c6c6a14
10378 #define BEQLR 0x4d820020
10379 #define MR_R3_R0 0x7c030378
10380 #define STD_R11_0R1 0xf9610000
10381 #define BCTRL 0x4e800421
10382 #define LD_R11_0R1 0xe9610000
10383 #define MTLR_R11 0x7d6803a6
10385 static inline bfd_byte *
10386 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10387 struct ppc_stub_hash_entry *stub_entry,
10388 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10390 bfd *obfd = htab->params->stub_bfd;
10392 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10393 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10394 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10395 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10396 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10397 bfd_put_32 (obfd, BEQLR, p), p += 4;
10398 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10399 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10400 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10403 r[0].r_offset += 9 * 4;
10404 p = build_plt_stub (htab, stub_entry, p, offset, r);
10405 bfd_put_32 (obfd, BCTRL, p - 4);
10407 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10408 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10409 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10410 bfd_put_32 (obfd, BLR, p), p += 4;
10415 static Elf_Internal_Rela *
10416 get_relocs (asection *sec, int count)
10418 Elf_Internal_Rela *relocs;
10419 struct bfd_elf_section_data *elfsec_data;
10421 elfsec_data = elf_section_data (sec);
10422 relocs = elfsec_data->relocs;
10423 if (relocs == NULL)
10425 bfd_size_type relsize;
10426 relsize = sec->reloc_count * sizeof (*relocs);
10427 relocs = bfd_alloc (sec->owner, relsize);
10428 if (relocs == NULL)
10430 elfsec_data->relocs = relocs;
10431 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10432 sizeof (Elf_Internal_Shdr));
10433 if (elfsec_data->rela.hdr == NULL)
10435 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10436 * sizeof (Elf64_External_Rela));
10437 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10438 sec->reloc_count = 0;
10440 relocs += sec->reloc_count;
10441 sec->reloc_count += count;
10446 get_r2off (struct bfd_link_info *info,
10447 struct ppc_stub_hash_entry *stub_entry)
10449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10450 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10454 /* Support linking -R objects. Get the toc pointer from the
10457 if (!htab->opd_abi)
10459 asection *opd = stub_entry->h->elf.root.u.def.section;
10460 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10462 if (strcmp (opd->name, ".opd") != 0
10463 || opd->reloc_count != 0)
10465 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10466 stub_entry->h->elf.root.root.string);
10467 bfd_set_error (bfd_error_bad_value);
10470 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10472 r2off = bfd_get_64 (opd->owner, buf);
10473 r2off -= elf_gp (info->output_bfd);
10475 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10480 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10482 struct ppc_stub_hash_entry *stub_entry;
10483 struct ppc_branch_hash_entry *br_entry;
10484 struct bfd_link_info *info;
10485 struct ppc_link_hash_table *htab;
10490 Elf_Internal_Rela *r;
10493 /* Massage our args to the form they really have. */
10494 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10497 htab = ppc_hash_table (info);
10501 /* Make a note of the offset within the stubs for this entry. */
10502 stub_entry->stub_offset = stub_entry->stub_sec->size;
10503 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10505 htab->stub_count[stub_entry->stub_type - 1] += 1;
10506 switch (stub_entry->stub_type)
10508 case ppc_stub_long_branch:
10509 case ppc_stub_long_branch_r2off:
10510 /* Branches are relative. This is where we are going to. */
10511 dest = (stub_entry->target_value
10512 + stub_entry->target_section->output_offset
10513 + stub_entry->target_section->output_section->vma);
10514 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10517 /* And this is where we are coming from. */
10518 off -= (stub_entry->stub_offset
10519 + stub_entry->stub_sec->output_offset
10520 + stub_entry->stub_sec->output_section->vma);
10523 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10525 bfd_vma r2off = get_r2off (info, stub_entry);
10529 htab->stub_error = TRUE;
10532 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10535 if (PPC_HA (r2off) != 0)
10538 bfd_put_32 (htab->params->stub_bfd,
10539 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10542 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10546 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10548 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10550 info->callbacks->einfo
10551 (_("%P: long branch stub `%s' offset overflow\n"),
10552 stub_entry->root.string);
10553 htab->stub_error = TRUE;
10557 if (info->emitrelocations)
10559 r = get_relocs (stub_entry->stub_sec, 1);
10562 r->r_offset = loc - stub_entry->stub_sec->contents;
10563 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10564 r->r_addend = dest;
10565 if (stub_entry->h != NULL)
10567 struct elf_link_hash_entry **hashes;
10568 unsigned long symndx;
10569 struct ppc_link_hash_entry *h;
10571 hashes = elf_sym_hashes (htab->params->stub_bfd);
10572 if (hashes == NULL)
10574 bfd_size_type hsize;
10576 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10577 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10578 if (hashes == NULL)
10580 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10581 htab->stub_globals = 1;
10583 symndx = htab->stub_globals++;
10585 hashes[symndx] = &h->elf;
10586 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10587 if (h->oh != NULL && h->oh->is_func)
10588 h = ppc_follow_link (h->oh);
10589 if (h->elf.root.u.def.section != stub_entry->target_section)
10590 /* H is an opd symbol. The addend must be zero. */
10594 off = (h->elf.root.u.def.value
10595 + h->elf.root.u.def.section->output_offset
10596 + h->elf.root.u.def.section->output_section->vma);
10597 r->r_addend -= off;
10603 case ppc_stub_plt_branch:
10604 case ppc_stub_plt_branch_r2off:
10605 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10606 stub_entry->root.string + 9,
10608 if (br_entry == NULL)
10610 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10611 stub_entry->root.string);
10612 htab->stub_error = TRUE;
10616 dest = (stub_entry->target_value
10617 + stub_entry->target_section->output_offset
10618 + stub_entry->target_section->output_section->vma);
10619 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10620 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10622 bfd_put_64 (htab->brlt->owner, dest,
10623 htab->brlt->contents + br_entry->offset);
10625 if (br_entry->iter == htab->stub_iteration)
10627 br_entry->iter = 0;
10629 if (htab->relbrlt != NULL)
10631 /* Create a reloc for the branch lookup table entry. */
10632 Elf_Internal_Rela rela;
10635 rela.r_offset = (br_entry->offset
10636 + htab->brlt->output_offset
10637 + htab->brlt->output_section->vma);
10638 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10639 rela.r_addend = dest;
10641 rl = htab->relbrlt->contents;
10642 rl += (htab->relbrlt->reloc_count++
10643 * sizeof (Elf64_External_Rela));
10644 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10646 else if (info->emitrelocations)
10648 r = get_relocs (htab->brlt, 1);
10651 /* brlt, being SEC_LINKER_CREATED does not go through the
10652 normal reloc processing. Symbols and offsets are not
10653 translated from input file to output file form, so
10654 set up the offset per the output file. */
10655 r->r_offset = (br_entry->offset
10656 + htab->brlt->output_offset
10657 + htab->brlt->output_section->vma);
10658 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10659 r->r_addend = dest;
10663 dest = (br_entry->offset
10664 + htab->brlt->output_offset
10665 + htab->brlt->output_section->vma);
10668 - elf_gp (htab->brlt->output_section->owner)
10669 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10671 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10673 info->callbacks->einfo
10674 (_("%P: linkage table error against `%T'\n"),
10675 stub_entry->root.string);
10676 bfd_set_error (bfd_error_bad_value);
10677 htab->stub_error = TRUE;
10681 if (info->emitrelocations)
10683 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10686 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10687 if (bfd_big_endian (info->output_bfd))
10688 r[0].r_offset += 2;
10689 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10690 r[0].r_offset += 4;
10691 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10692 r[0].r_addend = dest;
10693 if (PPC_HA (off) != 0)
10695 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10696 r[1].r_offset = r[0].r_offset + 4;
10697 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10698 r[1].r_addend = r[0].r_addend;
10702 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10704 if (PPC_HA (off) != 0)
10707 bfd_put_32 (htab->params->stub_bfd,
10708 ADDIS_R12_R2 | PPC_HA (off), loc);
10710 bfd_put_32 (htab->params->stub_bfd,
10711 LD_R12_0R12 | PPC_LO (off), loc);
10716 bfd_put_32 (htab->params->stub_bfd,
10717 LD_R12_0R2 | PPC_LO (off), loc);
10722 bfd_vma r2off = get_r2off (info, stub_entry);
10724 if (r2off == 0 && htab->opd_abi)
10726 htab->stub_error = TRUE;
10730 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10733 if (PPC_HA (off) != 0)
10736 bfd_put_32 (htab->params->stub_bfd,
10737 ADDIS_R12_R2 | PPC_HA (off), loc);
10739 bfd_put_32 (htab->params->stub_bfd,
10740 LD_R12_0R12 | PPC_LO (off), loc);
10743 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10745 if (PPC_HA (r2off) != 0)
10749 bfd_put_32 (htab->params->stub_bfd,
10750 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10752 if (PPC_LO (r2off) != 0)
10756 bfd_put_32 (htab->params->stub_bfd,
10757 ADDI_R2_R2 | PPC_LO (r2off), loc);
10761 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
10763 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
10766 case ppc_stub_plt_call:
10767 case ppc_stub_plt_call_r2save:
10768 if (stub_entry->h != NULL
10769 && stub_entry->h->is_func_descriptor
10770 && stub_entry->h->oh != NULL)
10772 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10774 /* If the old-ABI "dot-symbol" is undefined make it weak so
10775 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10776 FIXME: We used to define the symbol on one of the call
10777 stubs instead, which is why we test symbol section id
10778 against htab->top_id in various places. Likely all
10779 these checks could now disappear. */
10780 if (fh->elf.root.type == bfd_link_hash_undefined)
10781 fh->elf.root.type = bfd_link_hash_undefweak;
10782 /* Stop undo_symbol_twiddle changing it back to undefined. */
10783 fh->was_undefined = 0;
10786 /* Now build the stub. */
10787 dest = stub_entry->plt_ent->plt.offset & ~1;
10788 if (dest >= (bfd_vma) -2)
10791 plt = htab->elf.splt;
10792 if (!htab->elf.dynamic_sections_created
10793 || stub_entry->h == NULL
10794 || stub_entry->h->elf.dynindx == -1)
10795 plt = htab->elf.iplt;
10797 dest += plt->output_offset + plt->output_section->vma;
10799 if (stub_entry->h == NULL
10800 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10802 Elf_Internal_Rela rela;
10805 rela.r_offset = dest;
10807 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10809 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10810 rela.r_addend = (stub_entry->target_value
10811 + stub_entry->target_section->output_offset
10812 + stub_entry->target_section->output_section->vma);
10814 rl = (htab->elf.irelplt->contents
10815 + (htab->elf.irelplt->reloc_count++
10816 * sizeof (Elf64_External_Rela)));
10817 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10818 stub_entry->plt_ent->plt.offset |= 1;
10822 - elf_gp (plt->output_section->owner)
10823 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10825 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10827 info->callbacks->einfo
10828 (_("%P: linkage table error against `%T'\n"),
10829 stub_entry->h != NULL
10830 ? stub_entry->h->elf.root.root.string
10832 bfd_set_error (bfd_error_bad_value);
10833 htab->stub_error = TRUE;
10837 if (htab->params->plt_stub_align != 0)
10839 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10841 stub_entry->stub_sec->size += pad;
10842 stub_entry->stub_offset = stub_entry->stub_sec->size;
10847 if (info->emitrelocations)
10849 r = get_relocs (stub_entry->stub_sec,
10850 ((PPC_HA (off) != 0)
10852 ? 2 + (htab->params->plt_static_chain
10853 && PPC_HA (off + 16) == PPC_HA (off))
10857 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10858 if (bfd_big_endian (info->output_bfd))
10859 r[0].r_offset += 2;
10860 r[0].r_addend = dest;
10862 if (stub_entry->h != NULL
10863 && (stub_entry->h == htab->tls_get_addr_fd
10864 || stub_entry->h == htab->tls_get_addr)
10865 && !htab->params->no_tls_get_addr_opt)
10866 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10868 p = build_plt_stub (htab, stub_entry, loc, off, r);
10877 stub_entry->stub_sec->size += size;
10879 if (htab->params->emit_stub_syms)
10881 struct elf_link_hash_entry *h;
10884 const char *const stub_str[] = { "long_branch",
10885 "long_branch_r2off",
10887 "plt_branch_r2off",
10891 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10892 len2 = strlen (stub_entry->root.string);
10893 name = bfd_malloc (len1 + len2 + 2);
10896 memcpy (name, stub_entry->root.string, 9);
10897 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10898 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10899 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10902 if (h->root.type == bfd_link_hash_new)
10904 h->root.type = bfd_link_hash_defined;
10905 h->root.u.def.section = stub_entry->stub_sec;
10906 h->root.u.def.value = stub_entry->stub_offset;
10907 h->ref_regular = 1;
10908 h->def_regular = 1;
10909 h->ref_regular_nonweak = 1;
10910 h->forced_local = 1;
10918 /* As above, but don't actually build the stub. Just bump offset so
10919 we know stub section sizes, and select plt_branch stubs where
10920 long_branch stubs won't do. */
10923 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10925 struct ppc_stub_hash_entry *stub_entry;
10926 struct bfd_link_info *info;
10927 struct ppc_link_hash_table *htab;
10931 /* Massage our args to the form they really have. */
10932 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10935 htab = ppc_hash_table (info);
10939 if (stub_entry->stub_type == ppc_stub_plt_call
10940 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10943 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10944 if (off >= (bfd_vma) -2)
10946 plt = htab->elf.splt;
10947 if (!htab->elf.dynamic_sections_created
10948 || stub_entry->h == NULL
10949 || stub_entry->h->elf.dynindx == -1)
10950 plt = htab->elf.iplt;
10951 off += (plt->output_offset
10952 + plt->output_section->vma
10953 - elf_gp (plt->output_section->owner)
10954 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10956 size = plt_stub_size (htab, stub_entry, off);
10957 if (htab->params->plt_stub_align)
10958 size += plt_stub_pad (htab, stub_entry, off);
10959 if (info->emitrelocations)
10961 stub_entry->stub_sec->reloc_count
10962 += ((PPC_HA (off) != 0)
10964 ? 2 + (htab->params->plt_static_chain
10965 && PPC_HA (off + 16) == PPC_HA (off))
10967 stub_entry->stub_sec->flags |= SEC_RELOC;
10972 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10975 bfd_vma local_off = 0;
10977 off = (stub_entry->target_value
10978 + stub_entry->target_section->output_offset
10979 + stub_entry->target_section->output_section->vma);
10980 off -= (stub_entry->stub_sec->size
10981 + stub_entry->stub_sec->output_offset
10982 + stub_entry->stub_sec->output_section->vma);
10984 /* Reset the stub type from the plt variant in case we now
10985 can reach with a shorter stub. */
10986 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10987 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10990 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10992 r2off = get_r2off (info, stub_entry);
10993 if (r2off == 0 && htab->opd_abi)
10995 htab->stub_error = TRUE;
10999 if (PPC_HA (r2off) != 0)
11004 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11006 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11007 Do the same for -R objects without function descriptors. */
11008 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11009 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11012 struct ppc_branch_hash_entry *br_entry;
11014 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11015 stub_entry->root.string + 9,
11017 if (br_entry == NULL)
11019 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11020 stub_entry->root.string);
11021 htab->stub_error = TRUE;
11025 if (br_entry->iter != htab->stub_iteration)
11027 br_entry->iter = htab->stub_iteration;
11028 br_entry->offset = htab->brlt->size;
11029 htab->brlt->size += 8;
11031 if (htab->relbrlt != NULL)
11032 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11033 else if (info->emitrelocations)
11035 htab->brlt->reloc_count += 1;
11036 htab->brlt->flags |= SEC_RELOC;
11040 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11041 off = (br_entry->offset
11042 + htab->brlt->output_offset
11043 + htab->brlt->output_section->vma
11044 - elf_gp (htab->brlt->output_section->owner)
11045 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11047 if (info->emitrelocations)
11049 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11050 stub_entry->stub_sec->flags |= SEC_RELOC;
11053 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11056 if (PPC_HA (off) != 0)
11062 if (PPC_HA (off) != 0)
11065 if (PPC_HA (r2off) != 0)
11067 if (PPC_LO (r2off) != 0)
11071 else if (info->emitrelocations)
11073 stub_entry->stub_sec->reloc_count += 1;
11074 stub_entry->stub_sec->flags |= SEC_RELOC;
11078 stub_entry->stub_sec->size += size;
11082 /* Set up various things so that we can make a list of input sections
11083 for each output section included in the link. Returns -1 on error,
11084 0 when no stubs will be needed, and 1 on success. */
11087 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11090 int top_id, top_index, id;
11092 asection **input_list;
11094 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11099 /* Find the top input section id. */
11100 for (input_bfd = info->input_bfds, top_id = 3;
11102 input_bfd = input_bfd->link.next)
11104 for (section = input_bfd->sections;
11106 section = section->next)
11108 if (top_id < section->id)
11109 top_id = section->id;
11113 htab->top_id = top_id;
11114 amt = sizeof (struct map_stub) * (top_id + 1);
11115 htab->stub_group = bfd_zmalloc (amt);
11116 if (htab->stub_group == NULL)
11119 /* Set toc_off for com, und, abs and ind sections. */
11120 for (id = 0; id < 3; id++)
11121 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11123 /* We can't use output_bfd->section_count here to find the top output
11124 section index as some sections may have been removed, and
11125 strip_excluded_output_sections doesn't renumber the indices. */
11126 for (section = info->output_bfd->sections, top_index = 0;
11128 section = section->next)
11130 if (top_index < section->index)
11131 top_index = section->index;
11134 htab->top_index = top_index;
11135 amt = sizeof (asection *) * (top_index + 1);
11136 input_list = bfd_zmalloc (amt);
11137 htab->input_list = input_list;
11138 if (input_list == NULL)
11144 /* Set up for first pass at multitoc partitioning. */
11147 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11149 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11151 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11152 htab->toc_bfd = NULL;
11153 htab->toc_first_sec = NULL;
11156 /* The linker repeatedly calls this function for each TOC input section
11157 and linker generated GOT section. Group input bfds such that the toc
11158 within a group is less than 64k in size. */
11161 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11163 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11164 bfd_vma addr, off, limit;
11169 if (!htab->second_toc_pass)
11171 /* Keep track of the first .toc or .got section for this input bfd. */
11172 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11176 htab->toc_bfd = isec->owner;
11177 htab->toc_first_sec = isec;
11180 addr = isec->output_offset + isec->output_section->vma;
11181 off = addr - htab->toc_curr;
11182 limit = 0x80008000;
11183 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11185 if (off + isec->size > limit)
11187 addr = (htab->toc_first_sec->output_offset
11188 + htab->toc_first_sec->output_section->vma);
11189 htab->toc_curr = addr;
11192 /* toc_curr is the base address of this toc group. Set elf_gp
11193 for the input section to be the offset relative to the
11194 output toc base plus 0x8000. Making the input elf_gp an
11195 offset allows us to move the toc as a whole without
11196 recalculating input elf_gp. */
11197 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11198 off += TOC_BASE_OFF;
11200 /* Die if someone uses a linker script that doesn't keep input
11201 file .toc and .got together. */
11203 && elf_gp (isec->owner) != 0
11204 && elf_gp (isec->owner) != off)
11207 elf_gp (isec->owner) = off;
11211 /* During the second pass toc_first_sec points to the start of
11212 a toc group, and toc_curr is used to track the old elf_gp.
11213 We use toc_bfd to ensure we only look at each bfd once. */
11214 if (htab->toc_bfd == isec->owner)
11216 htab->toc_bfd = isec->owner;
11218 if (htab->toc_first_sec == NULL
11219 || htab->toc_curr != elf_gp (isec->owner))
11221 htab->toc_curr = elf_gp (isec->owner);
11222 htab->toc_first_sec = isec;
11224 addr = (htab->toc_first_sec->output_offset
11225 + htab->toc_first_sec->output_section->vma);
11226 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11227 elf_gp (isec->owner) = off;
11232 /* Called via elf_link_hash_traverse to merge GOT entries for global
11236 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11238 if (h->root.type == bfd_link_hash_indirect)
11241 merge_got_entries (&h->got.glist);
11246 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11250 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11252 struct got_entry *gent;
11254 if (h->root.type == bfd_link_hash_indirect)
11257 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11258 if (!gent->is_indirect)
11259 allocate_got (h, (struct bfd_link_info *) inf, gent);
11263 /* Called on the first multitoc pass after the last call to
11264 ppc64_elf_next_toc_section. This function removes duplicate GOT
11268 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11270 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11271 struct bfd *ibfd, *ibfd2;
11272 bfd_boolean done_something;
11274 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11276 if (!htab->do_multi_toc)
11279 /* Merge global sym got entries within a toc group. */
11280 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11282 /* And tlsld_got. */
11283 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11285 struct got_entry *ent, *ent2;
11287 if (!is_ppc64_elf (ibfd))
11290 ent = ppc64_tlsld_got (ibfd);
11291 if (!ent->is_indirect
11292 && ent->got.offset != (bfd_vma) -1)
11294 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11296 if (!is_ppc64_elf (ibfd2))
11299 ent2 = ppc64_tlsld_got (ibfd2);
11300 if (!ent2->is_indirect
11301 && ent2->got.offset != (bfd_vma) -1
11302 && elf_gp (ibfd2) == elf_gp (ibfd))
11304 ent2->is_indirect = TRUE;
11305 ent2->got.ent = ent;
11311 /* Zap sizes of got sections. */
11312 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11313 htab->elf.irelplt->size -= htab->got_reli_size;
11314 htab->got_reli_size = 0;
11316 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11318 asection *got, *relgot;
11320 if (!is_ppc64_elf (ibfd))
11323 got = ppc64_elf_tdata (ibfd)->got;
11326 got->rawsize = got->size;
11328 relgot = ppc64_elf_tdata (ibfd)->relgot;
11329 relgot->rawsize = relgot->size;
11334 /* Now reallocate the got, local syms first. We don't need to
11335 allocate section contents again since we never increase size. */
11336 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11338 struct got_entry **lgot_ents;
11339 struct got_entry **end_lgot_ents;
11340 struct plt_entry **local_plt;
11341 struct plt_entry **end_local_plt;
11342 unsigned char *lgot_masks;
11343 bfd_size_type locsymcount;
11344 Elf_Internal_Shdr *symtab_hdr;
11347 if (!is_ppc64_elf (ibfd))
11350 lgot_ents = elf_local_got_ents (ibfd);
11354 symtab_hdr = &elf_symtab_hdr (ibfd);
11355 locsymcount = symtab_hdr->sh_info;
11356 end_lgot_ents = lgot_ents + locsymcount;
11357 local_plt = (struct plt_entry **) end_lgot_ents;
11358 end_local_plt = local_plt + locsymcount;
11359 lgot_masks = (unsigned char *) end_local_plt;
11360 s = ppc64_elf_tdata (ibfd)->got;
11361 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11363 struct got_entry *ent;
11365 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11367 unsigned int ent_size = 8;
11368 unsigned int rel_size = sizeof (Elf64_External_Rela);
11370 ent->got.offset = s->size;
11371 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11376 s->size += ent_size;
11377 if ((*lgot_masks & PLT_IFUNC) != 0)
11379 htab->elf.irelplt->size += rel_size;
11380 htab->got_reli_size += rel_size;
11382 else if (info->shared)
11384 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11385 srel->size += rel_size;
11391 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11393 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11395 struct got_entry *ent;
11397 if (!is_ppc64_elf (ibfd))
11400 ent = ppc64_tlsld_got (ibfd);
11401 if (!ent->is_indirect
11402 && ent->got.offset != (bfd_vma) -1)
11404 asection *s = ppc64_elf_tdata (ibfd)->got;
11405 ent->got.offset = s->size;
11409 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11410 srel->size += sizeof (Elf64_External_Rela);
11415 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11416 if (!done_something)
11417 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11421 if (!is_ppc64_elf (ibfd))
11424 got = ppc64_elf_tdata (ibfd)->got;
11427 done_something = got->rawsize != got->size;
11428 if (done_something)
11433 if (done_something)
11434 (*htab->params->layout_sections_again) ();
11436 /* Set up for second pass over toc sections to recalculate elf_gp
11437 on input sections. */
11438 htab->toc_bfd = NULL;
11439 htab->toc_first_sec = NULL;
11440 htab->second_toc_pass = TRUE;
11441 return done_something;
11444 /* Called after second pass of multitoc partitioning. */
11447 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11449 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11451 /* After the second pass, toc_curr tracks the TOC offset used
11452 for code sections below in ppc64_elf_next_input_section. */
11453 htab->toc_curr = TOC_BASE_OFF;
11456 /* No toc references were found in ISEC. If the code in ISEC makes no
11457 calls, then there's no need to use toc adjusting stubs when branching
11458 into ISEC. Actually, indirect calls from ISEC are OK as they will
11459 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11460 needed, and 2 if a cyclical call-graph was found but no other reason
11461 for a stub was detected. If called from the top level, a return of
11462 2 means the same as a return of 0. */
11465 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11469 /* Mark this section as checked. */
11470 isec->call_check_done = 1;
11472 /* We know none of our code bearing sections will need toc stubs. */
11473 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11476 if (isec->size == 0)
11479 if (isec->output_section == NULL)
11483 if (isec->reloc_count != 0)
11485 Elf_Internal_Rela *relstart, *rel;
11486 Elf_Internal_Sym *local_syms;
11487 struct ppc_link_hash_table *htab;
11489 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11490 info->keep_memory);
11491 if (relstart == NULL)
11494 /* Look for branches to outside of this section. */
11496 htab = ppc_hash_table (info);
11500 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11502 enum elf_ppc64_reloc_type r_type;
11503 unsigned long r_symndx;
11504 struct elf_link_hash_entry *h;
11505 struct ppc_link_hash_entry *eh;
11506 Elf_Internal_Sym *sym;
11508 struct _opd_sec_data *opd;
11512 r_type = ELF64_R_TYPE (rel->r_info);
11513 if (r_type != R_PPC64_REL24
11514 && r_type != R_PPC64_REL14
11515 && r_type != R_PPC64_REL14_BRTAKEN
11516 && r_type != R_PPC64_REL14_BRNTAKEN)
11519 r_symndx = ELF64_R_SYM (rel->r_info);
11520 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11527 /* Calls to dynamic lib functions go through a plt call stub
11529 eh = (struct ppc_link_hash_entry *) h;
11531 && (eh->elf.plt.plist != NULL
11533 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11539 if (sym_sec == NULL)
11540 /* Ignore other undefined symbols. */
11543 /* Assume branches to other sections not included in the
11544 link need stubs too, to cover -R and absolute syms. */
11545 if (sym_sec->output_section == NULL)
11552 sym_value = sym->st_value;
11555 if (h->root.type != bfd_link_hash_defined
11556 && h->root.type != bfd_link_hash_defweak)
11558 sym_value = h->root.u.def.value;
11560 sym_value += rel->r_addend;
11562 /* If this branch reloc uses an opd sym, find the code section. */
11563 opd = get_opd_info (sym_sec);
11566 if (h == NULL && opd->adjust != NULL)
11570 adjust = opd->adjust[sym->st_value / 8];
11572 /* Assume deleted functions won't ever be called. */
11574 sym_value += adjust;
11577 dest = opd_entry_value (sym_sec, sym_value,
11578 &sym_sec, NULL, FALSE);
11579 if (dest == (bfd_vma) -1)
11584 + sym_sec->output_offset
11585 + sym_sec->output_section->vma);
11587 /* Ignore branch to self. */
11588 if (sym_sec == isec)
11591 /* If the called function uses the toc, we need a stub. */
11592 if (sym_sec->has_toc_reloc
11593 || sym_sec->makes_toc_func_call)
11599 /* Assume any branch that needs a long branch stub might in fact
11600 need a plt_branch stub. A plt_branch stub uses r2. */
11601 else if (dest - (isec->output_offset
11602 + isec->output_section->vma
11603 + rel->r_offset) + (1 << 25)
11604 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11612 /* If calling back to a section in the process of being
11613 tested, we can't say for sure that no toc adjusting stubs
11614 are needed, so don't return zero. */
11615 else if (sym_sec->call_check_in_progress)
11618 /* Branches to another section that itself doesn't have any TOC
11619 references are OK. Recursively call ourselves to check. */
11620 else if (!sym_sec->call_check_done)
11624 /* Mark current section as indeterminate, so that other
11625 sections that call back to current won't be marked as
11627 isec->call_check_in_progress = 1;
11628 recur = toc_adjusting_stub_needed (info, sym_sec);
11629 isec->call_check_in_progress = 0;
11640 if (local_syms != NULL
11641 && (elf_symtab_hdr (isec->owner).contents
11642 != (unsigned char *) local_syms))
11644 if (elf_section_data (isec)->relocs != relstart)
11649 && isec->map_head.s != NULL
11650 && (strcmp (isec->output_section->name, ".init") == 0
11651 || strcmp (isec->output_section->name, ".fini") == 0))
11653 if (isec->map_head.s->has_toc_reloc
11654 || isec->map_head.s->makes_toc_func_call)
11656 else if (!isec->map_head.s->call_check_done)
11659 isec->call_check_in_progress = 1;
11660 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11661 isec->call_check_in_progress = 0;
11668 isec->makes_toc_func_call = 1;
11673 /* The linker repeatedly calls this function for each input section,
11674 in the order that input sections are linked into output sections.
11675 Build lists of input sections to determine groupings between which
11676 we may insert linker stubs. */
11679 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11681 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11686 if ((isec->output_section->flags & SEC_CODE) != 0
11687 && isec->output_section->index <= htab->top_index)
11689 asection **list = htab->input_list + isec->output_section->index;
11690 /* Steal the link_sec pointer for our list. */
11691 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11692 /* This happens to make the list in reverse order,
11693 which is what we want. */
11694 PREV_SEC (isec) = *list;
11698 if (htab->multi_toc_needed)
11700 /* Analyse sections that aren't already flagged as needing a
11701 valid toc pointer. Exclude .fixup for the linux kernel.
11702 .fixup contains branches, but only back to the function that
11703 hit an exception. */
11704 if (!(isec->has_toc_reloc
11705 || (isec->flags & SEC_CODE) == 0
11706 || strcmp (isec->name, ".fixup") == 0
11707 || isec->call_check_done))
11709 if (toc_adjusting_stub_needed (info, isec) < 0)
11712 /* Make all sections use the TOC assigned for this object file.
11713 This will be wrong for pasted sections; We fix that in
11714 check_pasted_section(). */
11715 if (elf_gp (isec->owner) != 0)
11716 htab->toc_curr = elf_gp (isec->owner);
11719 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11723 /* Check that all .init and .fini sections use the same toc, if they
11724 have toc relocs. */
11727 check_pasted_section (struct bfd_link_info *info, const char *name)
11729 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11733 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11734 bfd_vma toc_off = 0;
11737 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11738 if (i->has_toc_reloc)
11741 toc_off = htab->stub_group[i->id].toc_off;
11742 else if (toc_off != htab->stub_group[i->id].toc_off)
11747 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11748 if (i->makes_toc_func_call)
11750 toc_off = htab->stub_group[i->id].toc_off;
11754 /* Make sure the whole pasted function uses the same toc offset. */
11756 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11757 htab->stub_group[i->id].toc_off = toc_off;
11763 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11765 return (check_pasted_section (info, ".init")
11766 & check_pasted_section (info, ".fini"));
11769 /* See whether we can group stub sections together. Grouping stub
11770 sections may result in fewer stubs. More importantly, we need to
11771 put all .init* and .fini* stubs at the beginning of the .init or
11772 .fini output sections respectively, because glibc splits the
11773 _init and _fini functions into multiple parts. Putting a stub in
11774 the middle of a function is not a good idea. */
11777 group_sections (struct ppc_link_hash_table *htab,
11778 bfd_size_type stub_group_size,
11779 bfd_boolean stubs_always_before_branch)
11782 bfd_size_type stub14_group_size;
11783 bfd_boolean suppress_size_errors;
11785 suppress_size_errors = FALSE;
11786 stub14_group_size = stub_group_size;
11787 if (stub_group_size == 1)
11789 /* Default values. */
11790 if (stubs_always_before_branch)
11792 stub_group_size = 0x1e00000;
11793 stub14_group_size = 0x7800;
11797 stub_group_size = 0x1c00000;
11798 stub14_group_size = 0x7000;
11800 suppress_size_errors = TRUE;
11803 list = htab->input_list + htab->top_index;
11806 asection *tail = *list;
11807 while (tail != NULL)
11811 bfd_size_type total;
11812 bfd_boolean big_sec;
11816 total = tail->size;
11817 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11818 && ppc64_elf_section_data (tail)->has_14bit_branch
11819 ? stub14_group_size : stub_group_size);
11820 if (big_sec && !suppress_size_errors)
11821 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11822 tail->owner, tail);
11823 curr_toc = htab->stub_group[tail->id].toc_off;
11825 while ((prev = PREV_SEC (curr)) != NULL
11826 && ((total += curr->output_offset - prev->output_offset)
11827 < (ppc64_elf_section_data (prev) != NULL
11828 && ppc64_elf_section_data (prev)->has_14bit_branch
11829 ? stub14_group_size : stub_group_size))
11830 && htab->stub_group[prev->id].toc_off == curr_toc)
11833 /* OK, the size from the start of CURR to the end is less
11834 than stub_group_size and thus can be handled by one stub
11835 section. (or the tail section is itself larger than
11836 stub_group_size, in which case we may be toast.) We
11837 should really be keeping track of the total size of stubs
11838 added here, as stubs contribute to the final output
11839 section size. That's a little tricky, and this way will
11840 only break if stubs added make the total size more than
11841 2^25, ie. for the default stub_group_size, if stubs total
11842 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11845 prev = PREV_SEC (tail);
11846 /* Set up this stub group. */
11847 htab->stub_group[tail->id].link_sec = curr;
11849 while (tail != curr && (tail = prev) != NULL);
11851 /* But wait, there's more! Input sections up to stub_group_size
11852 bytes before the stub section can be handled by it too.
11853 Don't do this if we have a really large section after the
11854 stubs, as adding more stubs increases the chance that
11855 branches may not reach into the stub section. */
11856 if (!stubs_always_before_branch && !big_sec)
11859 while (prev != NULL
11860 && ((total += tail->output_offset - prev->output_offset)
11861 < (ppc64_elf_section_data (prev) != NULL
11862 && ppc64_elf_section_data (prev)->has_14bit_branch
11863 ? stub14_group_size : stub_group_size))
11864 && htab->stub_group[prev->id].toc_off == curr_toc)
11867 prev = PREV_SEC (tail);
11868 htab->stub_group[tail->id].link_sec = curr;
11874 while (list-- != htab->input_list);
11875 free (htab->input_list);
11879 static const unsigned char glink_eh_frame_cie[] =
11881 0, 0, 0, 16, /* length. */
11882 0, 0, 0, 0, /* id. */
11883 1, /* CIE version. */
11884 'z', 'R', 0, /* Augmentation string. */
11885 4, /* Code alignment. */
11886 0x78, /* Data alignment. */
11888 1, /* Augmentation size. */
11889 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11890 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11894 /* Stripping output sections is normally done before dynamic section
11895 symbols have been allocated. This function is called later, and
11896 handles cases like htab->brlt which is mapped to its own output
11900 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11902 if (isec->size == 0
11903 && isec->output_section->size == 0
11904 && !(isec->output_section->flags & SEC_KEEP)
11905 && !bfd_section_removed_from_list (info->output_bfd,
11906 isec->output_section)
11907 && elf_section_data (isec->output_section)->dynindx == 0)
11909 isec->output_section->flags |= SEC_EXCLUDE;
11910 bfd_section_list_remove (info->output_bfd, isec->output_section);
11911 info->output_bfd->section_count--;
11915 /* Determine and set the size of the stub section for a final link.
11917 The basic idea here is to examine all the relocations looking for
11918 PC-relative calls to a target that is unreachable with a "bl"
11922 ppc64_elf_size_stubs (struct bfd_link_info *info)
11924 bfd_size_type stub_group_size;
11925 bfd_boolean stubs_always_before_branch;
11926 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11931 if (htab->params->plt_thread_safe == -1 && !info->executable)
11932 htab->params->plt_thread_safe = 1;
11933 if (!htab->opd_abi)
11934 htab->params->plt_thread_safe = 0;
11935 else if (htab->params->plt_thread_safe == -1)
11937 static const char *const thread_starter[] =
11941 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11943 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11944 "mq_notify", "create_timer",
11948 "GOMP_parallel_start",
11949 "GOMP_parallel_loop_static_start",
11950 "GOMP_parallel_loop_dynamic_start",
11951 "GOMP_parallel_loop_guided_start",
11952 "GOMP_parallel_loop_runtime_start",
11953 "GOMP_parallel_sections_start",
11957 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11959 struct elf_link_hash_entry *h;
11960 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11961 FALSE, FALSE, TRUE);
11962 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11963 if (htab->params->plt_thread_safe)
11967 stubs_always_before_branch = htab->params->group_size < 0;
11968 if (htab->params->group_size < 0)
11969 stub_group_size = -htab->params->group_size;
11971 stub_group_size = htab->params->group_size;
11973 group_sections (htab, stub_group_size, stubs_always_before_branch);
11978 unsigned int bfd_indx;
11979 asection *stub_sec;
11981 htab->stub_iteration += 1;
11983 for (input_bfd = info->input_bfds, bfd_indx = 0;
11985 input_bfd = input_bfd->link.next, bfd_indx++)
11987 Elf_Internal_Shdr *symtab_hdr;
11989 Elf_Internal_Sym *local_syms = NULL;
11991 if (!is_ppc64_elf (input_bfd))
11994 /* We'll need the symbol table in a second. */
11995 symtab_hdr = &elf_symtab_hdr (input_bfd);
11996 if (symtab_hdr->sh_info == 0)
11999 /* Walk over each section attached to the input bfd. */
12000 for (section = input_bfd->sections;
12002 section = section->next)
12004 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12006 /* If there aren't any relocs, then there's nothing more
12008 if ((section->flags & SEC_RELOC) == 0
12009 || (section->flags & SEC_ALLOC) == 0
12010 || (section->flags & SEC_LOAD) == 0
12011 || (section->flags & SEC_CODE) == 0
12012 || section->reloc_count == 0)
12015 /* If this section is a link-once section that will be
12016 discarded, then don't create any stubs. */
12017 if (section->output_section == NULL
12018 || section->output_section->owner != info->output_bfd)
12021 /* Get the relocs. */
12023 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12024 info->keep_memory);
12025 if (internal_relocs == NULL)
12026 goto error_ret_free_local;
12028 /* Now examine each relocation. */
12029 irela = internal_relocs;
12030 irelaend = irela + section->reloc_count;
12031 for (; irela < irelaend; irela++)
12033 enum elf_ppc64_reloc_type r_type;
12034 unsigned int r_indx;
12035 enum ppc_stub_type stub_type;
12036 struct ppc_stub_hash_entry *stub_entry;
12037 asection *sym_sec, *code_sec;
12038 bfd_vma sym_value, code_value;
12039 bfd_vma destination;
12040 unsigned long local_off;
12041 bfd_boolean ok_dest;
12042 struct ppc_link_hash_entry *hash;
12043 struct ppc_link_hash_entry *fdh;
12044 struct elf_link_hash_entry *h;
12045 Elf_Internal_Sym *sym;
12047 const asection *id_sec;
12048 struct _opd_sec_data *opd;
12049 struct plt_entry *plt_ent;
12051 r_type = ELF64_R_TYPE (irela->r_info);
12052 r_indx = ELF64_R_SYM (irela->r_info);
12054 if (r_type >= R_PPC64_max)
12056 bfd_set_error (bfd_error_bad_value);
12057 goto error_ret_free_internal;
12060 /* Only look for stubs on branch instructions. */
12061 if (r_type != R_PPC64_REL24
12062 && r_type != R_PPC64_REL14
12063 && r_type != R_PPC64_REL14_BRTAKEN
12064 && r_type != R_PPC64_REL14_BRNTAKEN)
12067 /* Now determine the call target, its name, value,
12069 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12070 r_indx, input_bfd))
12071 goto error_ret_free_internal;
12072 hash = (struct ppc_link_hash_entry *) h;
12079 sym_value = sym->st_value;
12082 else if (hash->elf.root.type == bfd_link_hash_defined
12083 || hash->elf.root.type == bfd_link_hash_defweak)
12085 sym_value = hash->elf.root.u.def.value;
12086 if (sym_sec->output_section != NULL)
12089 else if (hash->elf.root.type == bfd_link_hash_undefweak
12090 || hash->elf.root.type == bfd_link_hash_undefined)
12092 /* Recognise an old ABI func code entry sym, and
12093 use the func descriptor sym instead if it is
12095 if (hash->elf.root.root.string[0] == '.'
12096 && (fdh = lookup_fdh (hash, htab)) != NULL)
12098 if (fdh->elf.root.type == bfd_link_hash_defined
12099 || fdh->elf.root.type == bfd_link_hash_defweak)
12101 sym_sec = fdh->elf.root.u.def.section;
12102 sym_value = fdh->elf.root.u.def.value;
12103 if (sym_sec->output_section != NULL)
12112 bfd_set_error (bfd_error_bad_value);
12113 goto error_ret_free_internal;
12120 sym_value += irela->r_addend;
12121 destination = (sym_value
12122 + sym_sec->output_offset
12123 + sym_sec->output_section->vma);
12124 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12129 code_sec = sym_sec;
12130 code_value = sym_value;
12131 opd = get_opd_info (sym_sec);
12136 if (hash == NULL && opd->adjust != NULL)
12138 long adjust = opd->adjust[sym_value / 8];
12141 code_value += adjust;
12142 sym_value += adjust;
12144 dest = opd_entry_value (sym_sec, sym_value,
12145 &code_sec, &code_value, FALSE);
12146 if (dest != (bfd_vma) -1)
12148 destination = dest;
12151 /* Fixup old ABI sym to point at code
12153 hash->elf.root.type = bfd_link_hash_defweak;
12154 hash->elf.root.u.def.section = code_sec;
12155 hash->elf.root.u.def.value = code_value;
12160 /* Determine what (if any) linker stub is needed. */
12162 stub_type = ppc_type_of_stub (section, irela, &hash,
12163 &plt_ent, destination,
12166 if (stub_type != ppc_stub_plt_call)
12168 /* Check whether we need a TOC adjusting stub.
12169 Since the linker pastes together pieces from
12170 different object files when creating the
12171 _init and _fini functions, it may be that a
12172 call to what looks like a local sym is in
12173 fact a call needing a TOC adjustment. */
12174 if (code_sec != NULL
12175 && code_sec->output_section != NULL
12176 && (htab->stub_group[code_sec->id].toc_off
12177 != htab->stub_group[section->id].toc_off)
12178 && (code_sec->has_toc_reloc
12179 || code_sec->makes_toc_func_call))
12180 stub_type = ppc_stub_long_branch_r2off;
12183 if (stub_type == ppc_stub_none)
12186 /* __tls_get_addr calls might be eliminated. */
12187 if (stub_type != ppc_stub_plt_call
12189 && (hash == htab->tls_get_addr
12190 || hash == htab->tls_get_addr_fd)
12191 && section->has_tls_reloc
12192 && irela != internal_relocs)
12194 /* Get tls info. */
12195 unsigned char *tls_mask;
12197 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12198 irela - 1, input_bfd))
12199 goto error_ret_free_internal;
12200 if (*tls_mask != 0)
12204 if (stub_type == ppc_stub_plt_call
12205 && irela + 1 < irelaend
12206 && irela[1].r_offset == irela->r_offset + 4
12207 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12209 if (!tocsave_find (htab, INSERT,
12210 &local_syms, irela + 1, input_bfd))
12211 goto error_ret_free_internal;
12213 else if (stub_type == ppc_stub_plt_call)
12214 stub_type = ppc_stub_plt_call_r2save;
12216 /* Support for grouping stub sections. */
12217 id_sec = htab->stub_group[section->id].link_sec;
12219 /* Get the name of this stub. */
12220 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12222 goto error_ret_free_internal;
12224 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12225 stub_name, FALSE, FALSE);
12226 if (stub_entry != NULL)
12228 /* The proper stub has already been created. */
12230 if (stub_type == ppc_stub_plt_call_r2save)
12231 stub_entry->stub_type = stub_type;
12235 stub_entry = ppc_add_stub (stub_name, section, info);
12236 if (stub_entry == NULL)
12239 error_ret_free_internal:
12240 if (elf_section_data (section)->relocs == NULL)
12241 free (internal_relocs);
12242 error_ret_free_local:
12243 if (local_syms != NULL
12244 && (symtab_hdr->contents
12245 != (unsigned char *) local_syms))
12250 stub_entry->stub_type = stub_type;
12251 if (stub_type != ppc_stub_plt_call
12252 && stub_type != ppc_stub_plt_call_r2save)
12254 stub_entry->target_value = code_value;
12255 stub_entry->target_section = code_sec;
12259 stub_entry->target_value = sym_value;
12260 stub_entry->target_section = sym_sec;
12262 stub_entry->h = hash;
12263 stub_entry->plt_ent = plt_ent;
12264 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12266 if (stub_entry->h != NULL)
12267 htab->stub_globals += 1;
12270 /* We're done with the internal relocs, free them. */
12271 if (elf_section_data (section)->relocs != internal_relocs)
12272 free (internal_relocs);
12275 if (local_syms != NULL
12276 && symtab_hdr->contents != (unsigned char *) local_syms)
12278 if (!info->keep_memory)
12281 symtab_hdr->contents = (unsigned char *) local_syms;
12285 /* We may have added some stubs. Find out the new size of the
12287 for (stub_sec = htab->params->stub_bfd->sections;
12289 stub_sec = stub_sec->next)
12290 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12292 stub_sec->rawsize = stub_sec->size;
12293 stub_sec->size = 0;
12294 stub_sec->reloc_count = 0;
12295 stub_sec->flags &= ~SEC_RELOC;
12298 htab->brlt->size = 0;
12299 htab->brlt->reloc_count = 0;
12300 htab->brlt->flags &= ~SEC_RELOC;
12301 if (htab->relbrlt != NULL)
12302 htab->relbrlt->size = 0;
12304 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12306 if (info->emitrelocations
12307 && htab->glink != NULL && htab->glink->size != 0)
12309 htab->glink->reloc_count = 1;
12310 htab->glink->flags |= SEC_RELOC;
12313 if (htab->glink_eh_frame != NULL
12314 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12315 && htab->glink_eh_frame->output_section->size != 0)
12317 size_t size = 0, align;
12319 for (stub_sec = htab->params->stub_bfd->sections;
12321 stub_sec = stub_sec->next)
12322 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12324 if (htab->glink != NULL && htab->glink->size != 0)
12327 size += sizeof (glink_eh_frame_cie);
12329 align <<= htab->glink_eh_frame->output_section->alignment_power;
12331 size = (size + align) & ~align;
12332 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12333 htab->glink_eh_frame->size = size;
12336 if (htab->params->plt_stub_align != 0)
12337 for (stub_sec = htab->params->stub_bfd->sections;
12339 stub_sec = stub_sec->next)
12340 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12341 stub_sec->size = ((stub_sec->size
12342 + (1 << htab->params->plt_stub_align) - 1)
12343 & (-1 << htab->params->plt_stub_align));
12345 for (stub_sec = htab->params->stub_bfd->sections;
12347 stub_sec = stub_sec->next)
12348 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12349 && stub_sec->rawsize != stub_sec->size)
12352 /* Exit from this loop when no stubs have been added, and no stubs
12353 have changed size. */
12354 if (stub_sec == NULL
12355 && (htab->glink_eh_frame == NULL
12356 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12359 /* Ask the linker to do its stuff. */
12360 (*htab->params->layout_sections_again) ();
12363 if (htab->glink_eh_frame != NULL
12364 && htab->glink_eh_frame->size != 0)
12367 bfd_byte *p, *last_fde;
12368 size_t last_fde_len, size, align, pad;
12369 asection *stub_sec;
12371 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12374 htab->glink_eh_frame->contents = p;
12377 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12378 /* CIE length (rewrite in case little-endian). */
12379 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12380 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12381 p += sizeof (glink_eh_frame_cie);
12383 for (stub_sec = htab->params->stub_bfd->sections;
12385 stub_sec = stub_sec->next)
12386 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12391 bfd_put_32 (htab->elf.dynobj, 20, p);
12394 val = p - htab->glink_eh_frame->contents;
12395 bfd_put_32 (htab->elf.dynobj, val, p);
12397 /* Offset to stub section, written later. */
12399 /* stub section size. */
12400 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12402 /* Augmentation. */
12407 if (htab->glink != NULL && htab->glink->size != 0)
12412 bfd_put_32 (htab->elf.dynobj, 20, p);
12415 val = p - htab->glink_eh_frame->contents;
12416 bfd_put_32 (htab->elf.dynobj, val, p);
12418 /* Offset to .glink, written later. */
12421 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12423 /* Augmentation. */
12426 *p++ = DW_CFA_advance_loc + 1;
12427 *p++ = DW_CFA_register;
12430 *p++ = DW_CFA_advance_loc + 4;
12431 *p++ = DW_CFA_restore_extended;
12434 /* Subsume any padding into the last FDE if user .eh_frame
12435 sections are aligned more than glink_eh_frame. Otherwise any
12436 zero padding will be seen as a terminator. */
12437 size = p - htab->glink_eh_frame->contents;
12439 align <<= htab->glink_eh_frame->output_section->alignment_power;
12441 pad = ((size + align) & ~align) - size;
12442 htab->glink_eh_frame->size = size + pad;
12443 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12446 maybe_strip_output (info, htab->brlt);
12447 if (htab->glink_eh_frame != NULL)
12448 maybe_strip_output (info, htab->glink_eh_frame);
12453 /* Called after we have determined section placement. If sections
12454 move, we'll be called again. Provide a value for TOCstart. */
12457 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12462 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12463 order. The TOC starts where the first of these sections starts. */
12464 s = bfd_get_section_by_name (obfd, ".got");
12465 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12466 s = bfd_get_section_by_name (obfd, ".toc");
12467 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12468 s = bfd_get_section_by_name (obfd, ".tocbss");
12469 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12470 s = bfd_get_section_by_name (obfd, ".plt");
12471 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12473 /* This may happen for
12474 o references to TOC base (SYM@toc / TOC[tc0]) without a
12476 o bad linker script
12477 o --gc-sections and empty TOC sections
12479 FIXME: Warn user? */
12481 /* Look for a likely section. We probably won't even be
12483 for (s = obfd->sections; s != NULL; s = s->next)
12484 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12486 == (SEC_ALLOC | SEC_SMALL_DATA))
12489 for (s = obfd->sections; s != NULL; s = s->next)
12490 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12491 == (SEC_ALLOC | SEC_SMALL_DATA))
12494 for (s = obfd->sections; s != NULL; s = s->next)
12495 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12499 for (s = obfd->sections; s != NULL; s = s->next)
12500 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12506 TOCstart = s->output_section->vma + s->output_offset;
12508 _bfd_set_gp_value (obfd, TOCstart);
12510 if (info != NULL && s != NULL)
12512 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12516 if (htab->elf.hgot != NULL)
12518 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12519 htab->elf.hgot->root.u.def.section = s;
12524 struct bfd_link_hash_entry *bh = NULL;
12525 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12526 s, TOC_BASE_OFF, NULL, FALSE,
12533 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12534 write out any global entry stubs. */
12537 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12539 struct bfd_link_info *info;
12540 struct ppc_link_hash_table *htab;
12541 struct plt_entry *pent;
12544 if (h->root.type == bfd_link_hash_indirect)
12547 if (!h->pointer_equality_needed)
12550 if (h->def_regular)
12554 htab = ppc_hash_table (info);
12559 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12560 if (pent->plt.offset != (bfd_vma) -1
12561 && pent->addend == 0)
12567 p = s->contents + h->root.u.def.value;
12568 plt = htab->elf.splt;
12569 if (!htab->elf.dynamic_sections_created
12570 || h->dynindx == -1)
12571 plt = htab->elf.iplt;
12572 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12573 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12575 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12577 info->callbacks->einfo
12578 (_("%P: linkage table error against `%T'\n"),
12579 h->root.root.string);
12580 bfd_set_error (bfd_error_bad_value);
12581 htab->stub_error = TRUE;
12584 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12585 if (htab->params->emit_stub_syms)
12587 size_t len = strlen (h->root.root.string);
12588 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12593 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12594 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12597 if (h->root.type == bfd_link_hash_new)
12599 h->root.type = bfd_link_hash_defined;
12600 h->root.u.def.section = s;
12601 h->root.u.def.value = p - s->contents;
12602 h->ref_regular = 1;
12603 h->def_regular = 1;
12604 h->ref_regular_nonweak = 1;
12605 h->forced_local = 1;
12610 if (PPC_HA (off) != 0)
12612 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12615 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12617 bfd_put_32 (s->owner, MTCTR_R12, p);
12619 bfd_put_32 (s->owner, BCTR, p);
12625 /* Build all the stubs associated with the current output file.
12626 The stubs are kept in a hash table attached to the main linker
12627 hash table. This function is called via gldelf64ppc_finish. */
12630 ppc64_elf_build_stubs (struct bfd_link_info *info,
12633 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12634 asection *stub_sec;
12636 int stub_sec_count = 0;
12641 /* Allocate memory to hold the linker stubs. */
12642 for (stub_sec = htab->params->stub_bfd->sections;
12644 stub_sec = stub_sec->next)
12645 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12646 && stub_sec->size != 0)
12648 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
12649 if (stub_sec->contents == NULL)
12651 /* We want to check that built size is the same as calculated
12652 size. rawsize is a convenient location to use. */
12653 stub_sec->rawsize = stub_sec->size;
12654 stub_sec->size = 0;
12657 if (htab->glink != NULL && htab->glink->size != 0)
12662 /* Build the .glink plt call stub. */
12663 if (htab->params->emit_stub_syms)
12665 struct elf_link_hash_entry *h;
12666 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12667 TRUE, FALSE, FALSE);
12670 if (h->root.type == bfd_link_hash_new)
12672 h->root.type = bfd_link_hash_defined;
12673 h->root.u.def.section = htab->glink;
12674 h->root.u.def.value = 8;
12675 h->ref_regular = 1;
12676 h->def_regular = 1;
12677 h->ref_regular_nonweak = 1;
12678 h->forced_local = 1;
12682 plt0 = (htab->elf.splt->output_section->vma
12683 + htab->elf.splt->output_offset
12685 if (info->emitrelocations)
12687 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12690 r->r_offset = (htab->glink->output_offset
12691 + htab->glink->output_section->vma);
12692 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12693 r->r_addend = plt0;
12695 p = htab->glink->contents;
12696 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12697 bfd_put_64 (htab->glink->owner, plt0, p);
12701 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12703 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12705 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12707 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12709 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12711 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12713 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12715 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12717 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12719 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12724 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12726 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12728 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12730 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12732 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12734 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12736 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12738 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12740 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12742 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12744 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12746 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12749 bfd_put_32 (htab->glink->owner, BCTR, p);
12751 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12753 bfd_put_32 (htab->glink->owner, NOP, p);
12757 /* Build the .glink lazy link call stubs. */
12759 while (p < htab->glink->contents + htab->glink->rawsize)
12765 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12770 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12772 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12777 bfd_put_32 (htab->glink->owner,
12778 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12783 /* Build .glink global entry stubs. */
12784 if (htab->glink->size > htab->glink->rawsize)
12785 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12788 if (htab->brlt != NULL && htab->brlt->size != 0)
12790 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12792 if (htab->brlt->contents == NULL)
12795 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12797 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12798 htab->relbrlt->size);
12799 if (htab->relbrlt->contents == NULL)
12803 /* Build the stubs as directed by the stub hash table. */
12804 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12806 if (htab->relbrlt != NULL)
12807 htab->relbrlt->reloc_count = 0;
12809 if (htab->params->plt_stub_align != 0)
12810 for (stub_sec = htab->params->stub_bfd->sections;
12812 stub_sec = stub_sec->next)
12813 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12814 stub_sec->size = ((stub_sec->size
12815 + (1 << htab->params->plt_stub_align) - 1)
12816 & (-1 << htab->params->plt_stub_align));
12818 for (stub_sec = htab->params->stub_bfd->sections;
12820 stub_sec = stub_sec->next)
12821 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12823 stub_sec_count += 1;
12824 if (stub_sec->rawsize != stub_sec->size)
12828 /* Note that the glink_eh_frame check here is not only testing that
12829 the generated size matched the calculated size but also that
12830 bfd_elf_discard_info didn't make any changes to the section. */
12831 if (stub_sec != NULL
12832 || (htab->glink_eh_frame != NULL
12833 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12835 htab->stub_error = TRUE;
12836 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12839 if (htab->stub_error)
12844 *stats = bfd_malloc (500);
12845 if (*stats == NULL)
12848 sprintf (*stats, _("linker stubs in %u group%s\n"
12850 " toc adjust %lu\n"
12851 " long branch %lu\n"
12852 " long toc adj %lu\n"
12854 " plt call toc %lu\n"
12855 " global entry %lu"),
12857 stub_sec_count == 1 ? "" : "s",
12858 htab->stub_count[ppc_stub_long_branch - 1],
12859 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12860 htab->stub_count[ppc_stub_plt_branch - 1],
12861 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12862 htab->stub_count[ppc_stub_plt_call - 1],
12863 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12864 htab->stub_count[ppc_stub_global_entry - 1]);
12869 /* This function undoes the changes made by add_symbol_adjust. */
12872 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12874 struct ppc_link_hash_entry *eh;
12876 if (h->root.type == bfd_link_hash_indirect)
12879 eh = (struct ppc_link_hash_entry *) h;
12880 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12883 eh->elf.root.type = bfd_link_hash_undefined;
12888 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12890 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12893 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12896 /* What to do when ld finds relocations against symbols defined in
12897 discarded sections. */
12899 static unsigned int
12900 ppc64_elf_action_discarded (asection *sec)
12902 if (strcmp (".opd", sec->name) == 0)
12905 if (strcmp (".toc", sec->name) == 0)
12908 if (strcmp (".toc1", sec->name) == 0)
12911 return _bfd_elf_default_action_discarded (sec);
12914 /* The RELOCATE_SECTION function is called by the ELF backend linker
12915 to handle the relocations for a section.
12917 The relocs are always passed as Rela structures; if the section
12918 actually uses Rel structures, the r_addend field will always be
12921 This function is responsible for adjust the section contents as
12922 necessary, and (if using Rela relocs and generating a
12923 relocatable output file) adjusting the reloc addend as
12926 This function does not have to worry about setting the reloc
12927 address or the reloc symbol index.
12929 LOCAL_SYMS is a pointer to the swapped in local symbols.
12931 LOCAL_SECTIONS is an array giving the section in the input file
12932 corresponding to the st_shndx field of each local symbol.
12934 The global hash table entry for the global symbols can be found
12935 via elf_sym_hashes (input_bfd).
12937 When generating relocatable output, this function must handle
12938 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12939 going to be the section symbol corresponding to the output
12940 section, which means that the addend must be adjusted
12944 ppc64_elf_relocate_section (bfd *output_bfd,
12945 struct bfd_link_info *info,
12947 asection *input_section,
12948 bfd_byte *contents,
12949 Elf_Internal_Rela *relocs,
12950 Elf_Internal_Sym *local_syms,
12951 asection **local_sections)
12953 struct ppc_link_hash_table *htab;
12954 Elf_Internal_Shdr *symtab_hdr;
12955 struct elf_link_hash_entry **sym_hashes;
12956 Elf_Internal_Rela *rel;
12957 Elf_Internal_Rela *relend;
12958 Elf_Internal_Rela outrel;
12960 struct got_entry **local_got_ents;
12962 bfd_boolean ret = TRUE;
12963 bfd_boolean is_opd;
12964 /* Assume 'at' branch hints. */
12965 bfd_boolean is_isa_v2 = TRUE;
12966 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12968 /* Initialize howto table if needed. */
12969 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12972 htab = ppc_hash_table (info);
12976 /* Don't relocate stub sections. */
12977 if (input_section->owner == htab->params->stub_bfd)
12980 BFD_ASSERT (is_ppc64_elf (input_bfd));
12982 local_got_ents = elf_local_got_ents (input_bfd);
12983 TOCstart = elf_gp (output_bfd);
12984 symtab_hdr = &elf_symtab_hdr (input_bfd);
12985 sym_hashes = elf_sym_hashes (input_bfd);
12986 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12989 relend = relocs + input_section->reloc_count;
12990 for (; rel < relend; rel++)
12992 enum elf_ppc64_reloc_type r_type;
12994 bfd_reloc_status_type r;
12995 Elf_Internal_Sym *sym;
12997 struct elf_link_hash_entry *h_elf;
12998 struct ppc_link_hash_entry *h;
12999 struct ppc_link_hash_entry *fdh;
13000 const char *sym_name;
13001 unsigned long r_symndx, toc_symndx;
13002 bfd_vma toc_addend;
13003 unsigned char tls_mask, tls_gd, tls_type;
13004 unsigned char sym_type;
13005 bfd_vma relocation;
13006 bfd_boolean unresolved_reloc;
13007 bfd_boolean warned;
13008 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13011 struct ppc_stub_hash_entry *stub_entry;
13012 bfd_vma max_br_offset;
13014 const Elf_Internal_Rela orig_rel = *rel;
13015 reloc_howto_type *howto;
13016 struct reloc_howto_struct alt_howto;
13018 r_type = ELF64_R_TYPE (rel->r_info);
13019 r_symndx = ELF64_R_SYM (rel->r_info);
13021 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13022 symbol of the previous ADDR64 reloc. The symbol gives us the
13023 proper TOC base to use. */
13024 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13026 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13028 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13034 unresolved_reloc = FALSE;
13037 if (r_symndx < symtab_hdr->sh_info)
13039 /* It's a local symbol. */
13040 struct _opd_sec_data *opd;
13042 sym = local_syms + r_symndx;
13043 sec = local_sections[r_symndx];
13044 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13045 sym_type = ELF64_ST_TYPE (sym->st_info);
13046 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13047 opd = get_opd_info (sec);
13048 if (opd != NULL && opd->adjust != NULL)
13050 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
13055 /* If this is a relocation against the opd section sym
13056 and we have edited .opd, adjust the reloc addend so
13057 that ld -r and ld --emit-relocs output is correct.
13058 If it is a reloc against some other .opd symbol,
13059 then the symbol value will be adjusted later. */
13060 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13061 rel->r_addend += adjust;
13063 relocation += adjust;
13069 bfd_boolean ignored;
13071 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13072 r_symndx, symtab_hdr, sym_hashes,
13073 h_elf, sec, relocation,
13074 unresolved_reloc, warned, ignored);
13075 sym_name = h_elf->root.root.string;
13076 sym_type = h_elf->type;
13078 && sec->owner == output_bfd
13079 && strcmp (sec->name, ".opd") == 0)
13081 /* This is a symbol defined in a linker script. All
13082 such are defined in output sections, even those
13083 defined by simple assignment from a symbol defined in
13084 an input section. Transfer the symbol to an
13085 appropriate input .opd section, so that a branch to
13086 this symbol will be mapped to the location specified
13087 by the opd entry. */
13088 struct bfd_link_order *lo;
13089 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13090 if (lo->type == bfd_indirect_link_order)
13092 asection *isec = lo->u.indirect.section;
13093 if (h_elf->root.u.def.value >= isec->output_offset
13094 && h_elf->root.u.def.value < (isec->output_offset
13097 h_elf->root.u.def.value -= isec->output_offset;
13098 h_elf->root.u.def.section = isec;
13105 h = (struct ppc_link_hash_entry *) h_elf;
13107 if (sec != NULL && discarded_section (sec))
13108 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13110 ppc64_elf_howto_table[r_type], 0,
13113 if (info->relocatable)
13116 if (h != NULL && &h->elf == htab->elf.hgot)
13118 relocation = (TOCstart
13119 + htab->stub_group[input_section->id].toc_off);
13120 sec = bfd_abs_section_ptr;
13121 unresolved_reloc = FALSE;
13124 /* TLS optimizations. Replace instruction sequences and relocs
13125 based on information we collected in tls_optimize. We edit
13126 RELOCS so that --emit-relocs will output something sensible
13127 for the final instruction stream. */
13132 tls_mask = h->tls_mask;
13133 else if (local_got_ents != NULL)
13135 struct plt_entry **local_plt = (struct plt_entry **)
13136 (local_got_ents + symtab_hdr->sh_info);
13137 unsigned char *lgot_masks = (unsigned char *)
13138 (local_plt + symtab_hdr->sh_info);
13139 tls_mask = lgot_masks[r_symndx];
13142 && (r_type == R_PPC64_TLS
13143 || r_type == R_PPC64_TLSGD
13144 || r_type == R_PPC64_TLSLD))
13146 /* Check for toc tls entries. */
13147 unsigned char *toc_tls;
13149 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13150 &local_syms, rel, input_bfd))
13154 tls_mask = *toc_tls;
13157 /* Check that tls relocs are used with tls syms, and non-tls
13158 relocs are used with non-tls syms. */
13159 if (r_symndx != STN_UNDEF
13160 && r_type != R_PPC64_NONE
13162 || h->elf.root.type == bfd_link_hash_defined
13163 || h->elf.root.type == bfd_link_hash_defweak)
13164 && (IS_PPC64_TLS_RELOC (r_type)
13165 != (sym_type == STT_TLS
13166 || (sym_type == STT_SECTION
13167 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13170 && (r_type == R_PPC64_TLS
13171 || r_type == R_PPC64_TLSGD
13172 || r_type == R_PPC64_TLSLD))
13173 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13176 info->callbacks->einfo
13177 (!IS_PPC64_TLS_RELOC (r_type)
13178 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13179 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13180 input_bfd, input_section, rel->r_offset,
13181 ppc64_elf_howto_table[r_type]->name,
13185 /* Ensure reloc mapping code below stays sane. */
13186 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13187 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13188 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13189 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13190 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13191 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13192 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13193 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13194 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13195 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13203 case R_PPC64_LO_DS_OPT:
13204 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13205 if ((insn & (0x3f << 26)) != 58u << 26)
13207 insn += (14u << 26) - (58u << 26);
13208 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13209 r_type = R_PPC64_TOC16_LO;
13210 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13213 case R_PPC64_TOC16:
13214 case R_PPC64_TOC16_LO:
13215 case R_PPC64_TOC16_DS:
13216 case R_PPC64_TOC16_LO_DS:
13218 /* Check for toc tls entries. */
13219 unsigned char *toc_tls;
13222 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13223 &local_syms, rel, input_bfd);
13229 tls_mask = *toc_tls;
13230 if (r_type == R_PPC64_TOC16_DS
13231 || r_type == R_PPC64_TOC16_LO_DS)
13234 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13239 /* If we found a GD reloc pair, then we might be
13240 doing a GD->IE transition. */
13243 tls_gd = TLS_TPRELGD;
13244 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13247 else if (retval == 3)
13249 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13257 case R_PPC64_GOT_TPREL16_HI:
13258 case R_PPC64_GOT_TPREL16_HA:
13260 && (tls_mask & TLS_TPREL) == 0)
13262 rel->r_offset -= d_offset;
13263 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13264 r_type = R_PPC64_NONE;
13265 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13269 case R_PPC64_GOT_TPREL16_DS:
13270 case R_PPC64_GOT_TPREL16_LO_DS:
13272 && (tls_mask & TLS_TPREL) == 0)
13275 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13277 insn |= 0x3c0d0000; /* addis 0,13,0 */
13278 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13279 r_type = R_PPC64_TPREL16_HA;
13280 if (toc_symndx != 0)
13282 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13283 rel->r_addend = toc_addend;
13284 /* We changed the symbol. Start over in order to
13285 get h, sym, sec etc. right. */
13290 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13296 && (tls_mask & TLS_TPREL) == 0)
13298 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13299 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13302 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13303 /* Was PPC64_TLS which sits on insn boundary, now
13304 PPC64_TPREL16_LO which is at low-order half-word. */
13305 rel->r_offset += d_offset;
13306 r_type = R_PPC64_TPREL16_LO;
13307 if (toc_symndx != 0)
13309 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13310 rel->r_addend = toc_addend;
13311 /* We changed the symbol. Start over in order to
13312 get h, sym, sec etc. right. */
13317 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13321 case R_PPC64_GOT_TLSGD16_HI:
13322 case R_PPC64_GOT_TLSGD16_HA:
13323 tls_gd = TLS_TPRELGD;
13324 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13328 case R_PPC64_GOT_TLSLD16_HI:
13329 case R_PPC64_GOT_TLSLD16_HA:
13330 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13333 if ((tls_mask & tls_gd) != 0)
13334 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13335 + R_PPC64_GOT_TPREL16_DS);
13338 rel->r_offset -= d_offset;
13339 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13340 r_type = R_PPC64_NONE;
13342 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13346 case R_PPC64_GOT_TLSGD16:
13347 case R_PPC64_GOT_TLSGD16_LO:
13348 tls_gd = TLS_TPRELGD;
13349 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13353 case R_PPC64_GOT_TLSLD16:
13354 case R_PPC64_GOT_TLSLD16_LO:
13355 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13357 unsigned int insn1, insn2, insn3;
13361 offset = (bfd_vma) -1;
13362 /* If not using the newer R_PPC64_TLSGD/LD to mark
13363 __tls_get_addr calls, we must trust that the call
13364 stays with its arg setup insns, ie. that the next
13365 reloc is the __tls_get_addr call associated with
13366 the current reloc. Edit both insns. */
13367 if (input_section->has_tls_get_addr_call
13368 && rel + 1 < relend
13369 && branch_reloc_hash_match (input_bfd, rel + 1,
13370 htab->tls_get_addr,
13371 htab->tls_get_addr_fd))
13372 offset = rel[1].r_offset;
13373 if ((tls_mask & tls_gd) != 0)
13376 insn1 = bfd_get_32 (output_bfd,
13377 contents + rel->r_offset - d_offset);
13378 insn1 &= (1 << 26) - (1 << 2);
13379 insn1 |= 58 << 26; /* ld */
13380 insn2 = 0x7c636a14; /* add 3,3,13 */
13381 if (offset != (bfd_vma) -1)
13382 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13383 if ((tls_mask & TLS_EXPLICIT) == 0)
13384 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13385 + R_PPC64_GOT_TPREL16_DS);
13387 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13388 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13393 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13394 insn2 = 0x38630000; /* addi 3,3,0 */
13397 /* Was an LD reloc. */
13399 sec = local_sections[toc_symndx];
13401 r_symndx < symtab_hdr->sh_info;
13403 if (local_sections[r_symndx] == sec)
13405 if (r_symndx >= symtab_hdr->sh_info)
13406 r_symndx = STN_UNDEF;
13407 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13408 if (r_symndx != STN_UNDEF)
13409 rel->r_addend -= (local_syms[r_symndx].st_value
13410 + sec->output_offset
13411 + sec->output_section->vma);
13413 else if (toc_symndx != 0)
13415 r_symndx = toc_symndx;
13416 rel->r_addend = toc_addend;
13418 r_type = R_PPC64_TPREL16_HA;
13419 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13420 if (offset != (bfd_vma) -1)
13422 rel[1].r_info = ELF64_R_INFO (r_symndx,
13423 R_PPC64_TPREL16_LO);
13424 rel[1].r_offset = offset + d_offset;
13425 rel[1].r_addend = rel->r_addend;
13428 bfd_put_32 (output_bfd, insn1,
13429 contents + rel->r_offset - d_offset);
13430 if (offset != (bfd_vma) -1)
13432 insn3 = bfd_get_32 (output_bfd,
13433 contents + offset + 4);
13435 || insn3 == CROR_151515 || insn3 == CROR_313131)
13437 rel[1].r_offset += 4;
13438 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13441 bfd_put_32 (output_bfd, insn2, contents + offset);
13443 if ((tls_mask & tls_gd) == 0
13444 && (tls_gd == 0 || toc_symndx != 0))
13446 /* We changed the symbol. Start over in order
13447 to get h, sym, sec etc. right. */
13454 case R_PPC64_TLSGD:
13455 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13457 unsigned int insn2, insn3;
13458 bfd_vma offset = rel->r_offset;
13460 if ((tls_mask & TLS_TPRELGD) != 0)
13463 r_type = R_PPC64_NONE;
13464 insn2 = 0x7c636a14; /* add 3,3,13 */
13469 if (toc_symndx != 0)
13471 r_symndx = toc_symndx;
13472 rel->r_addend = toc_addend;
13474 r_type = R_PPC64_TPREL16_LO;
13475 rel->r_offset = offset + d_offset;
13476 insn2 = 0x38630000; /* addi 3,3,0 */
13478 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13479 /* Zap the reloc on the _tls_get_addr call too. */
13480 BFD_ASSERT (offset == rel[1].r_offset);
13481 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13482 insn3 = bfd_get_32 (output_bfd,
13483 contents + offset + 4);
13485 || insn3 == CROR_151515 || insn3 == CROR_313131)
13487 rel->r_offset += 4;
13488 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13491 bfd_put_32 (output_bfd, insn2, contents + offset);
13492 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13500 case R_PPC64_TLSLD:
13501 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13503 unsigned int insn2, insn3;
13504 bfd_vma offset = rel->r_offset;
13507 sec = local_sections[toc_symndx];
13509 r_symndx < symtab_hdr->sh_info;
13511 if (local_sections[r_symndx] == sec)
13513 if (r_symndx >= symtab_hdr->sh_info)
13514 r_symndx = STN_UNDEF;
13515 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13516 if (r_symndx != STN_UNDEF)
13517 rel->r_addend -= (local_syms[r_symndx].st_value
13518 + sec->output_offset
13519 + sec->output_section->vma);
13521 r_type = R_PPC64_TPREL16_LO;
13522 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13523 rel->r_offset = offset + d_offset;
13524 /* Zap the reloc on the _tls_get_addr call too. */
13525 BFD_ASSERT (offset == rel[1].r_offset);
13526 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13527 insn2 = 0x38630000; /* addi 3,3,0 */
13528 insn3 = bfd_get_32 (output_bfd,
13529 contents + offset + 4);
13531 || insn3 == CROR_151515 || insn3 == CROR_313131)
13533 rel->r_offset += 4;
13534 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13537 bfd_put_32 (output_bfd, insn2, contents + offset);
13543 case R_PPC64_DTPMOD64:
13544 if (rel + 1 < relend
13545 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13546 && rel[1].r_offset == rel->r_offset + 8)
13548 if ((tls_mask & TLS_GD) == 0)
13550 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13551 if ((tls_mask & TLS_TPRELGD) != 0)
13552 r_type = R_PPC64_TPREL64;
13555 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13556 r_type = R_PPC64_NONE;
13558 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13563 if ((tls_mask & TLS_LD) == 0)
13565 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13566 r_type = R_PPC64_NONE;
13567 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13572 case R_PPC64_TPREL64:
13573 if ((tls_mask & TLS_TPREL) == 0)
13575 r_type = R_PPC64_NONE;
13576 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13580 case R_PPC64_REL16_HA:
13581 /* If we are generating a non-PIC executable, edit
13582 . 0: addis 2,12,.TOC.-0b@ha
13583 . addi 2,2,.TOC.-0b@l
13584 used by ELFv2 global entry points to set up r2, to
13587 if .TOC. is in range. */
13589 && !info->traditional_format
13590 && h != NULL && &h->elf == htab->elf.hgot
13591 && rel + 1 < relend
13592 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13593 && rel[1].r_offset == rel->r_offset + 4
13594 && rel[1].r_addend == rel->r_addend + 4
13595 && relocation + 0x80008000 <= 0xffffffff)
13597 unsigned int insn1, insn2;
13598 bfd_vma offset = rel->r_offset - d_offset;
13599 insn1 = bfd_get_32 (output_bfd, contents + offset);
13600 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13601 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13602 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13604 r_type = R_PPC64_ADDR16_HA;
13605 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13606 rel->r_addend -= d_offset;
13607 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13608 rel[1].r_addend -= d_offset + 4;
13609 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13615 /* Handle other relocations that tweak non-addend part of insn. */
13617 max_br_offset = 1 << 25;
13618 addend = rel->r_addend;
13619 reloc_dest = DEST_NORMAL;
13625 case R_PPC64_TOCSAVE:
13626 if (relocation + addend == (rel->r_offset
13627 + input_section->output_offset
13628 + input_section->output_section->vma)
13629 && tocsave_find (htab, NO_INSERT,
13630 &local_syms, rel, input_bfd))
13632 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13634 || insn == CROR_151515 || insn == CROR_313131)
13635 bfd_put_32 (input_bfd,
13636 STD_R2_0R1 + STK_TOC (htab),
13637 contents + rel->r_offset);
13641 /* Branch taken prediction relocations. */
13642 case R_PPC64_ADDR14_BRTAKEN:
13643 case R_PPC64_REL14_BRTAKEN:
13644 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13647 /* Branch not taken prediction relocations. */
13648 case R_PPC64_ADDR14_BRNTAKEN:
13649 case R_PPC64_REL14_BRNTAKEN:
13650 insn |= bfd_get_32 (output_bfd,
13651 contents + rel->r_offset) & ~(0x01 << 21);
13654 case R_PPC64_REL14:
13655 max_br_offset = 1 << 15;
13658 case R_PPC64_REL24:
13659 /* Calls to functions with a different TOC, such as calls to
13660 shared objects, need to alter the TOC pointer. This is
13661 done using a linkage stub. A REL24 branching to these
13662 linkage stubs needs to be followed by a nop, as the nop
13663 will be replaced with an instruction to restore the TOC
13668 && h->oh->is_func_descriptor)
13669 fdh = ppc_follow_link (h->oh);
13670 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13672 if (stub_entry != NULL
13673 && (stub_entry->stub_type == ppc_stub_plt_call
13674 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13675 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13676 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13678 bfd_boolean can_plt_call = FALSE;
13680 /* All of these stubs will modify r2, so there must be a
13681 branch and link followed by a nop. The nop is
13682 replaced by an insn to restore r2. */
13683 if (rel->r_offset + 8 <= input_section->size)
13687 br = bfd_get_32 (input_bfd,
13688 contents + rel->r_offset);
13693 nop = bfd_get_32 (input_bfd,
13694 contents + rel->r_offset + 4);
13696 || nop == CROR_151515 || nop == CROR_313131)
13699 && (h == htab->tls_get_addr_fd
13700 || h == htab->tls_get_addr)
13701 && !htab->params->no_tls_get_addr_opt)
13703 /* Special stub used, leave nop alone. */
13706 bfd_put_32 (input_bfd,
13707 LD_R2_0R1 + STK_TOC (htab),
13708 contents + rel->r_offset + 4);
13709 can_plt_call = TRUE;
13714 if (!can_plt_call && h != NULL)
13716 const char *name = h->elf.root.root.string;
13721 if (strncmp (name, "__libc_start_main", 17) == 0
13722 && (name[17] == 0 || name[17] == '@'))
13724 /* Allow crt1 branch to go via a toc adjusting
13725 stub. Other calls that never return could do
13726 the same, if we could detect such. */
13727 can_plt_call = TRUE;
13733 /* g++ as of 20130507 emits self-calls without a
13734 following nop. This is arguably wrong since we
13735 have conflicting information. On the one hand a
13736 global symbol and on the other a local call
13737 sequence, but don't error for this special case.
13738 It isn't possible to cheaply verify we have
13739 exactly such a call. Allow all calls to the same
13741 asection *code_sec = sec;
13743 if (get_opd_info (sec) != NULL)
13745 bfd_vma off = (relocation + addend
13746 - sec->output_section->vma
13747 - sec->output_offset);
13749 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13751 if (code_sec == input_section)
13752 can_plt_call = TRUE;
13757 if (stub_entry->stub_type == ppc_stub_plt_call
13758 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13759 info->callbacks->einfo
13760 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13761 "recompile with -fPIC\n"),
13762 input_bfd, input_section, rel->r_offset, sym_name);
13764 info->callbacks->einfo
13765 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13766 "(-mcmodel=small toc adjust stub)\n"),
13767 input_bfd, input_section, rel->r_offset, sym_name);
13769 bfd_set_error (bfd_error_bad_value);
13774 && (stub_entry->stub_type == ppc_stub_plt_call
13775 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13776 unresolved_reloc = FALSE;
13779 if ((stub_entry == NULL
13780 || stub_entry->stub_type == ppc_stub_long_branch
13781 || stub_entry->stub_type == ppc_stub_plt_branch)
13782 && get_opd_info (sec) != NULL)
13784 /* The branch destination is the value of the opd entry. */
13785 bfd_vma off = (relocation + addend
13786 - sec->output_section->vma
13787 - sec->output_offset);
13788 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13789 if (dest != (bfd_vma) -1)
13793 reloc_dest = DEST_OPD;
13797 /* If the branch is out of reach we ought to have a long
13799 from = (rel->r_offset
13800 + input_section->output_offset
13801 + input_section->output_section->vma);
13803 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13807 if (stub_entry != NULL
13808 && (stub_entry->stub_type == ppc_stub_long_branch
13809 || stub_entry->stub_type == ppc_stub_plt_branch)
13810 && (r_type == R_PPC64_ADDR14_BRTAKEN
13811 || r_type == R_PPC64_ADDR14_BRNTAKEN
13812 || (relocation + addend - from + max_br_offset
13813 < 2 * max_br_offset)))
13814 /* Don't use the stub if this branch is in range. */
13817 if (stub_entry != NULL)
13819 /* Munge up the value and addend so that we call the stub
13820 rather than the procedure directly. */
13821 relocation = (stub_entry->stub_offset
13822 + stub_entry->stub_sec->output_offset
13823 + stub_entry->stub_sec->output_section->vma);
13825 reloc_dest = DEST_STUB;
13827 if ((stub_entry->stub_type == ppc_stub_plt_call
13828 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13829 && (ALWAYS_EMIT_R2SAVE
13830 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13831 && rel + 1 < relend
13832 && rel[1].r_offset == rel->r_offset + 4
13833 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13841 /* Set 'a' bit. This is 0b00010 in BO field for branch
13842 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13843 for branch on CTR insns (BO == 1a00t or 1a01t). */
13844 if ((insn & (0x14 << 21)) == (0x04 << 21))
13845 insn |= 0x02 << 21;
13846 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13847 insn |= 0x08 << 21;
13853 /* Invert 'y' bit if not the default. */
13854 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13855 insn ^= 0x01 << 21;
13858 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13861 /* NOP out calls to undefined weak functions.
13862 We can thus call a weak function without first
13863 checking whether the function is defined. */
13865 && h->elf.root.type == bfd_link_hash_undefweak
13866 && h->elf.dynindx == -1
13867 && r_type == R_PPC64_REL24
13871 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13877 /* Set `addend'. */
13882 info->callbacks->einfo
13883 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13884 input_bfd, (int) r_type, sym_name);
13886 bfd_set_error (bfd_error_bad_value);
13892 case R_PPC64_TLSGD:
13893 case R_PPC64_TLSLD:
13894 case R_PPC64_TOCSAVE:
13895 case R_PPC64_GNU_VTINHERIT:
13896 case R_PPC64_GNU_VTENTRY:
13899 /* GOT16 relocations. Like an ADDR16 using the symbol's
13900 address in the GOT as relocation value instead of the
13901 symbol's value itself. Also, create a GOT entry for the
13902 symbol and put the symbol value there. */
13903 case R_PPC64_GOT_TLSGD16:
13904 case R_PPC64_GOT_TLSGD16_LO:
13905 case R_PPC64_GOT_TLSGD16_HI:
13906 case R_PPC64_GOT_TLSGD16_HA:
13907 tls_type = TLS_TLS | TLS_GD;
13910 case R_PPC64_GOT_TLSLD16:
13911 case R_PPC64_GOT_TLSLD16_LO:
13912 case R_PPC64_GOT_TLSLD16_HI:
13913 case R_PPC64_GOT_TLSLD16_HA:
13914 tls_type = TLS_TLS | TLS_LD;
13917 case R_PPC64_GOT_TPREL16_DS:
13918 case R_PPC64_GOT_TPREL16_LO_DS:
13919 case R_PPC64_GOT_TPREL16_HI:
13920 case R_PPC64_GOT_TPREL16_HA:
13921 tls_type = TLS_TLS | TLS_TPREL;
13924 case R_PPC64_GOT_DTPREL16_DS:
13925 case R_PPC64_GOT_DTPREL16_LO_DS:
13926 case R_PPC64_GOT_DTPREL16_HI:
13927 case R_PPC64_GOT_DTPREL16_HA:
13928 tls_type = TLS_TLS | TLS_DTPREL;
13931 case R_PPC64_GOT16:
13932 case R_PPC64_GOT16_LO:
13933 case R_PPC64_GOT16_HI:
13934 case R_PPC64_GOT16_HA:
13935 case R_PPC64_GOT16_DS:
13936 case R_PPC64_GOT16_LO_DS:
13939 /* Relocation is to the entry for this symbol in the global
13944 unsigned long indx = 0;
13945 struct got_entry *ent;
13947 if (tls_type == (TLS_TLS | TLS_LD)
13949 || !h->elf.def_dynamic))
13950 ent = ppc64_tlsld_got (input_bfd);
13956 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13957 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13960 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13961 /* This is actually a static link, or it is a
13962 -Bsymbolic link and the symbol is defined
13963 locally, or the symbol was forced to be local
13964 because of a version file. */
13968 BFD_ASSERT (h->elf.dynindx != -1);
13969 indx = h->elf.dynindx;
13970 unresolved_reloc = FALSE;
13972 ent = h->elf.got.glist;
13976 if (local_got_ents == NULL)
13978 ent = local_got_ents[r_symndx];
13981 for (; ent != NULL; ent = ent->next)
13982 if (ent->addend == orig_rel.r_addend
13983 && ent->owner == input_bfd
13984 && ent->tls_type == tls_type)
13990 if (ent->is_indirect)
13991 ent = ent->got.ent;
13992 offp = &ent->got.offset;
13993 got = ppc64_elf_tdata (ent->owner)->got;
13997 /* The offset must always be a multiple of 8. We use the
13998 least significant bit to record whether we have already
13999 processed this entry. */
14001 if ((off & 1) != 0)
14005 /* Generate relocs for the dynamic linker, except in
14006 the case of TLSLD where we'll use one entry per
14014 ? h->elf.type == STT_GNU_IFUNC
14015 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14017 relgot = htab->elf.irelplt;
14018 else if ((info->shared || indx != 0)
14020 || (tls_type == (TLS_TLS | TLS_LD)
14021 && !h->elf.def_dynamic)
14022 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14023 || h->elf.root.type != bfd_link_hash_undefweak))
14024 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14025 if (relgot != NULL)
14027 outrel.r_offset = (got->output_section->vma
14028 + got->output_offset
14030 outrel.r_addend = addend;
14031 if (tls_type & (TLS_LD | TLS_GD))
14033 outrel.r_addend = 0;
14034 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14035 if (tls_type == (TLS_TLS | TLS_GD))
14037 loc = relgot->contents;
14038 loc += (relgot->reloc_count++
14039 * sizeof (Elf64_External_Rela));
14040 bfd_elf64_swap_reloca_out (output_bfd,
14042 outrel.r_offset += 8;
14043 outrel.r_addend = addend;
14045 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14048 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14049 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14050 else if (tls_type == (TLS_TLS | TLS_TPREL))
14051 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14052 else if (indx != 0)
14053 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14057 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14059 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14061 /* Write the .got section contents for the sake
14063 loc = got->contents + off;
14064 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14068 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14070 outrel.r_addend += relocation;
14071 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14072 outrel.r_addend -= htab->elf.tls_sec->vma;
14074 loc = relgot->contents;
14075 loc += (relgot->reloc_count++
14076 * sizeof (Elf64_External_Rela));
14077 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14080 /* Init the .got section contents here if we're not
14081 emitting a reloc. */
14084 relocation += addend;
14085 if (tls_type == (TLS_TLS | TLS_LD))
14087 else if (tls_type != 0)
14089 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14090 if (tls_type == (TLS_TLS | TLS_TPREL))
14091 relocation += DTP_OFFSET - TP_OFFSET;
14093 if (tls_type == (TLS_TLS | TLS_GD))
14095 bfd_put_64 (output_bfd, relocation,
14096 got->contents + off + 8);
14101 bfd_put_64 (output_bfd, relocation,
14102 got->contents + off);
14106 if (off >= (bfd_vma) -2)
14109 relocation = got->output_section->vma + got->output_offset + off;
14110 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14114 case R_PPC64_PLT16_HA:
14115 case R_PPC64_PLT16_HI:
14116 case R_PPC64_PLT16_LO:
14117 case R_PPC64_PLT32:
14118 case R_PPC64_PLT64:
14119 /* Relocation is to the entry for this symbol in the
14120 procedure linkage table. */
14122 /* Resolve a PLT reloc against a local symbol directly,
14123 without using the procedure linkage table. */
14127 /* It's possible that we didn't make a PLT entry for this
14128 symbol. This happens when statically linking PIC code,
14129 or when using -Bsymbolic. Go find a match if there is a
14131 if (htab->elf.splt != NULL)
14133 struct plt_entry *ent;
14134 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14135 if (ent->plt.offset != (bfd_vma) -1
14136 && ent->addend == orig_rel.r_addend)
14138 relocation = (htab->elf.splt->output_section->vma
14139 + htab->elf.splt->output_offset
14140 + ent->plt.offset);
14141 unresolved_reloc = FALSE;
14148 /* Relocation value is TOC base. */
14149 relocation = TOCstart;
14150 if (r_symndx == STN_UNDEF)
14151 relocation += htab->stub_group[input_section->id].toc_off;
14152 else if (unresolved_reloc)
14154 else if (sec != NULL && sec->id <= htab->top_id)
14155 relocation += htab->stub_group[sec->id].toc_off;
14157 unresolved_reloc = TRUE;
14160 /* TOC16 relocs. We want the offset relative to the TOC base,
14161 which is the address of the start of the TOC plus 0x8000.
14162 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14164 case R_PPC64_TOC16:
14165 case R_PPC64_TOC16_LO:
14166 case R_PPC64_TOC16_HI:
14167 case R_PPC64_TOC16_DS:
14168 case R_PPC64_TOC16_LO_DS:
14169 case R_PPC64_TOC16_HA:
14170 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14173 /* Relocate against the beginning of the section. */
14174 case R_PPC64_SECTOFF:
14175 case R_PPC64_SECTOFF_LO:
14176 case R_PPC64_SECTOFF_HI:
14177 case R_PPC64_SECTOFF_DS:
14178 case R_PPC64_SECTOFF_LO_DS:
14179 case R_PPC64_SECTOFF_HA:
14181 addend -= sec->output_section->vma;
14184 case R_PPC64_REL16:
14185 case R_PPC64_REL16_LO:
14186 case R_PPC64_REL16_HI:
14187 case R_PPC64_REL16_HA:
14190 case R_PPC64_REL14:
14191 case R_PPC64_REL14_BRNTAKEN:
14192 case R_PPC64_REL14_BRTAKEN:
14193 case R_PPC64_REL24:
14196 case R_PPC64_TPREL16:
14197 case R_PPC64_TPREL16_LO:
14198 case R_PPC64_TPREL16_HI:
14199 case R_PPC64_TPREL16_HA:
14200 case R_PPC64_TPREL16_DS:
14201 case R_PPC64_TPREL16_LO_DS:
14202 case R_PPC64_TPREL16_HIGH:
14203 case R_PPC64_TPREL16_HIGHA:
14204 case R_PPC64_TPREL16_HIGHER:
14205 case R_PPC64_TPREL16_HIGHERA:
14206 case R_PPC64_TPREL16_HIGHEST:
14207 case R_PPC64_TPREL16_HIGHESTA:
14209 && h->elf.root.type == bfd_link_hash_undefweak
14210 && h->elf.dynindx == -1)
14212 /* Make this relocation against an undefined weak symbol
14213 resolve to zero. This is really just a tweak, since
14214 code using weak externs ought to check that they are
14215 defined before using them. */
14216 bfd_byte *p = contents + rel->r_offset - d_offset;
14218 insn = bfd_get_32 (output_bfd, p);
14219 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14221 bfd_put_32 (output_bfd, insn, p);
14224 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14226 /* The TPREL16 relocs shouldn't really be used in shared
14227 libs as they will result in DT_TEXTREL being set, but
14228 support them anyway. */
14232 case R_PPC64_DTPREL16:
14233 case R_PPC64_DTPREL16_LO:
14234 case R_PPC64_DTPREL16_HI:
14235 case R_PPC64_DTPREL16_HA:
14236 case R_PPC64_DTPREL16_DS:
14237 case R_PPC64_DTPREL16_LO_DS:
14238 case R_PPC64_DTPREL16_HIGH:
14239 case R_PPC64_DTPREL16_HIGHA:
14240 case R_PPC64_DTPREL16_HIGHER:
14241 case R_PPC64_DTPREL16_HIGHERA:
14242 case R_PPC64_DTPREL16_HIGHEST:
14243 case R_PPC64_DTPREL16_HIGHESTA:
14244 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14247 case R_PPC64_ADDR64_LOCAL:
14248 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14253 case R_PPC64_DTPMOD64:
14258 case R_PPC64_TPREL64:
14259 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14262 case R_PPC64_DTPREL64:
14263 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14266 /* Relocations that may need to be propagated if this is a
14268 case R_PPC64_REL30:
14269 case R_PPC64_REL32:
14270 case R_PPC64_REL64:
14271 case R_PPC64_ADDR14:
14272 case R_PPC64_ADDR14_BRNTAKEN:
14273 case R_PPC64_ADDR14_BRTAKEN:
14274 case R_PPC64_ADDR16:
14275 case R_PPC64_ADDR16_DS:
14276 case R_PPC64_ADDR16_HA:
14277 case R_PPC64_ADDR16_HI:
14278 case R_PPC64_ADDR16_HIGH:
14279 case R_PPC64_ADDR16_HIGHA:
14280 case R_PPC64_ADDR16_HIGHER:
14281 case R_PPC64_ADDR16_HIGHERA:
14282 case R_PPC64_ADDR16_HIGHEST:
14283 case R_PPC64_ADDR16_HIGHESTA:
14284 case R_PPC64_ADDR16_LO:
14285 case R_PPC64_ADDR16_LO_DS:
14286 case R_PPC64_ADDR24:
14287 case R_PPC64_ADDR32:
14288 case R_PPC64_ADDR64:
14289 case R_PPC64_UADDR16:
14290 case R_PPC64_UADDR32:
14291 case R_PPC64_UADDR64:
14293 if ((input_section->flags & SEC_ALLOC) == 0)
14296 if (NO_OPD_RELOCS && is_opd)
14301 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14302 || h->elf.root.type != bfd_link_hash_undefweak)
14303 && (must_be_dyn_reloc (info, r_type)
14304 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14305 || (ELIMINATE_COPY_RELOCS
14308 && h->elf.dynindx != -1
14309 && !h->elf.non_got_ref
14310 && !h->elf.def_regular)
14313 ? h->elf.type == STT_GNU_IFUNC
14314 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14316 bfd_boolean skip, relocate;
14320 /* When generating a dynamic object, these relocations
14321 are copied into the output file to be resolved at run
14327 out_off = _bfd_elf_section_offset (output_bfd, info,
14328 input_section, rel->r_offset);
14329 if (out_off == (bfd_vma) -1)
14331 else if (out_off == (bfd_vma) -2)
14332 skip = TRUE, relocate = TRUE;
14333 out_off += (input_section->output_section->vma
14334 + input_section->output_offset);
14335 outrel.r_offset = out_off;
14336 outrel.r_addend = rel->r_addend;
14338 /* Optimize unaligned reloc use. */
14339 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14340 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14341 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14342 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14343 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14344 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14345 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14346 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14347 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14350 memset (&outrel, 0, sizeof outrel);
14351 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14353 && r_type != R_PPC64_TOC)
14355 BFD_ASSERT (h->elf.dynindx != -1);
14356 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14360 /* This symbol is local, or marked to become local,
14361 or this is an opd section reloc which must point
14362 at a local function. */
14363 outrel.r_addend += relocation;
14364 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14366 if (is_opd && h != NULL)
14368 /* Lie about opd entries. This case occurs
14369 when building shared libraries and we
14370 reference a function in another shared
14371 lib. The same thing happens for a weak
14372 definition in an application that's
14373 overridden by a strong definition in a
14374 shared lib. (I believe this is a generic
14375 bug in binutils handling of weak syms.)
14376 In these cases we won't use the opd
14377 entry in this lib. */
14378 unresolved_reloc = FALSE;
14381 && r_type == R_PPC64_ADDR64
14383 ? h->elf.type == STT_GNU_IFUNC
14384 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14385 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14388 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14390 /* We need to relocate .opd contents for ld.so.
14391 Prelink also wants simple and consistent rules
14392 for relocs. This make all RELATIVE relocs have
14393 *r_offset equal to r_addend. */
14402 ? h->elf.type == STT_GNU_IFUNC
14403 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14405 info->callbacks->einfo
14406 (_("%P: %H: %s for indirect "
14407 "function `%T' unsupported\n"),
14408 input_bfd, input_section, rel->r_offset,
14409 ppc64_elf_howto_table[r_type]->name,
14413 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14415 else if (sec == NULL || sec->owner == NULL)
14417 bfd_set_error (bfd_error_bad_value);
14424 osec = sec->output_section;
14425 indx = elf_section_data (osec)->dynindx;
14429 if ((osec->flags & SEC_READONLY) == 0
14430 && htab->elf.data_index_section != NULL)
14431 osec = htab->elf.data_index_section;
14433 osec = htab->elf.text_index_section;
14434 indx = elf_section_data (osec)->dynindx;
14436 BFD_ASSERT (indx != 0);
14438 /* We are turning this relocation into one
14439 against a section symbol, so subtract out
14440 the output section's address but not the
14441 offset of the input section in the output
14443 outrel.r_addend -= osec->vma;
14446 outrel.r_info = ELF64_R_INFO (indx, r_type);
14450 sreloc = elf_section_data (input_section)->sreloc;
14452 ? h->elf.type == STT_GNU_IFUNC
14453 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14454 sreloc = htab->elf.irelplt;
14455 if (sreloc == NULL)
14458 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14461 loc = sreloc->contents;
14462 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14463 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14465 /* If this reloc is against an external symbol, it will
14466 be computed at runtime, so there's no need to do
14467 anything now. However, for the sake of prelink ensure
14468 that the section contents are a known value. */
14471 unresolved_reloc = FALSE;
14472 /* The value chosen here is quite arbitrary as ld.so
14473 ignores section contents except for the special
14474 case of .opd where the contents might be accessed
14475 before relocation. Choose zero, as that won't
14476 cause reloc overflow. */
14479 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14480 to improve backward compatibility with older
14482 if (r_type == R_PPC64_ADDR64)
14483 addend = outrel.r_addend;
14484 /* Adjust pc_relative relocs to have zero in *r_offset. */
14485 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14486 addend = (input_section->output_section->vma
14487 + input_section->output_offset
14494 case R_PPC64_GLOB_DAT:
14495 case R_PPC64_JMP_SLOT:
14496 case R_PPC64_JMP_IREL:
14497 case R_PPC64_RELATIVE:
14498 /* We shouldn't ever see these dynamic relocs in relocatable
14500 /* Fall through. */
14502 case R_PPC64_PLTGOT16:
14503 case R_PPC64_PLTGOT16_DS:
14504 case R_PPC64_PLTGOT16_HA:
14505 case R_PPC64_PLTGOT16_HI:
14506 case R_PPC64_PLTGOT16_LO:
14507 case R_PPC64_PLTGOT16_LO_DS:
14508 case R_PPC64_PLTREL32:
14509 case R_PPC64_PLTREL64:
14510 /* These ones haven't been implemented yet. */
14512 info->callbacks->einfo
14513 (_("%P: %B: %s is not supported for `%T'\n"),
14515 ppc64_elf_howto_table[r_type]->name, sym_name);
14517 bfd_set_error (bfd_error_invalid_operation);
14522 /* Multi-instruction sequences that access the TOC can be
14523 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14524 to nop; addi rb,r2,x; */
14530 case R_PPC64_GOT_TLSLD16_HI:
14531 case R_PPC64_GOT_TLSGD16_HI:
14532 case R_PPC64_GOT_TPREL16_HI:
14533 case R_PPC64_GOT_DTPREL16_HI:
14534 case R_PPC64_GOT16_HI:
14535 case R_PPC64_TOC16_HI:
14536 /* These relocs would only be useful if building up an
14537 offset to later add to r2, perhaps in an indexed
14538 addressing mode instruction. Don't try to optimize.
14539 Unfortunately, the possibility of someone building up an
14540 offset like this or even with the HA relocs, means that
14541 we need to check the high insn when optimizing the low
14545 case R_PPC64_GOT_TLSLD16_HA:
14546 case R_PPC64_GOT_TLSGD16_HA:
14547 case R_PPC64_GOT_TPREL16_HA:
14548 case R_PPC64_GOT_DTPREL16_HA:
14549 case R_PPC64_GOT16_HA:
14550 case R_PPC64_TOC16_HA:
14551 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14552 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14554 bfd_byte *p = contents + (rel->r_offset & ~3);
14555 bfd_put_32 (input_bfd, NOP, p);
14559 case R_PPC64_GOT_TLSLD16_LO:
14560 case R_PPC64_GOT_TLSGD16_LO:
14561 case R_PPC64_GOT_TPREL16_LO_DS:
14562 case R_PPC64_GOT_DTPREL16_LO_DS:
14563 case R_PPC64_GOT16_LO:
14564 case R_PPC64_GOT16_LO_DS:
14565 case R_PPC64_TOC16_LO:
14566 case R_PPC64_TOC16_LO_DS:
14567 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14568 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14570 bfd_byte *p = contents + (rel->r_offset & ~3);
14571 insn = bfd_get_32 (input_bfd, p);
14572 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14574 /* Transform addic to addi when we change reg. */
14575 insn &= ~((0x3f << 26) | (0x1f << 16));
14576 insn |= (14u << 26) | (2 << 16);
14580 insn &= ~(0x1f << 16);
14583 bfd_put_32 (input_bfd, insn, p);
14588 /* Do any further special processing. */
14589 howto = ppc64_elf_howto_table[(int) r_type];
14595 case R_PPC64_REL16_HA:
14596 case R_PPC64_ADDR16_HA:
14597 case R_PPC64_ADDR16_HIGHA:
14598 case R_PPC64_ADDR16_HIGHERA:
14599 case R_PPC64_ADDR16_HIGHESTA:
14600 case R_PPC64_TOC16_HA:
14601 case R_PPC64_SECTOFF_HA:
14602 case R_PPC64_TPREL16_HA:
14603 case R_PPC64_TPREL16_HIGHA:
14604 case R_PPC64_TPREL16_HIGHERA:
14605 case R_PPC64_TPREL16_HIGHESTA:
14606 case R_PPC64_DTPREL16_HA:
14607 case R_PPC64_DTPREL16_HIGHA:
14608 case R_PPC64_DTPREL16_HIGHERA:
14609 case R_PPC64_DTPREL16_HIGHESTA:
14610 /* It's just possible that this symbol is a weak symbol
14611 that's not actually defined anywhere. In that case,
14612 'sec' would be NULL, and we should leave the symbol
14613 alone (it will be set to zero elsewhere in the link). */
14618 case R_PPC64_GOT16_HA:
14619 case R_PPC64_PLTGOT16_HA:
14620 case R_PPC64_PLT16_HA:
14621 case R_PPC64_GOT_TLSGD16_HA:
14622 case R_PPC64_GOT_TLSLD16_HA:
14623 case R_PPC64_GOT_TPREL16_HA:
14624 case R_PPC64_GOT_DTPREL16_HA:
14625 /* Add 0x10000 if sign bit in 0:15 is set.
14626 Bits 0:15 are not used. */
14630 case R_PPC64_ADDR16_DS:
14631 case R_PPC64_ADDR16_LO_DS:
14632 case R_PPC64_GOT16_DS:
14633 case R_PPC64_GOT16_LO_DS:
14634 case R_PPC64_PLT16_LO_DS:
14635 case R_PPC64_SECTOFF_DS:
14636 case R_PPC64_SECTOFF_LO_DS:
14637 case R_PPC64_TOC16_DS:
14638 case R_PPC64_TOC16_LO_DS:
14639 case R_PPC64_PLTGOT16_DS:
14640 case R_PPC64_PLTGOT16_LO_DS:
14641 case R_PPC64_GOT_TPREL16_DS:
14642 case R_PPC64_GOT_TPREL16_LO_DS:
14643 case R_PPC64_GOT_DTPREL16_DS:
14644 case R_PPC64_GOT_DTPREL16_LO_DS:
14645 case R_PPC64_TPREL16_DS:
14646 case R_PPC64_TPREL16_LO_DS:
14647 case R_PPC64_DTPREL16_DS:
14648 case R_PPC64_DTPREL16_LO_DS:
14649 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14651 /* If this reloc is against an lq insn, then the value must be
14652 a multiple of 16. This is somewhat of a hack, but the
14653 "correct" way to do this by defining _DQ forms of all the
14654 _DS relocs bloats all reloc switches in this file. It
14655 doesn't seem to make much sense to use any of these relocs
14656 in data, so testing the insn should be safe. */
14657 if ((insn & (0x3f << 26)) == (56u << 26))
14659 if (((relocation + addend) & mask) != 0)
14661 info->callbacks->einfo
14662 (_("%P: %H: error: %s not a multiple of %u\n"),
14663 input_bfd, input_section, rel->r_offset,
14666 bfd_set_error (bfd_error_bad_value);
14673 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14674 because such sections are not SEC_ALLOC and thus ld.so will
14675 not process them. */
14676 if (unresolved_reloc
14677 && !((input_section->flags & SEC_DEBUGGING) != 0
14678 && h->elf.def_dynamic)
14679 && _bfd_elf_section_offset (output_bfd, info, input_section,
14680 rel->r_offset) != (bfd_vma) -1)
14682 info->callbacks->einfo
14683 (_("%P: %H: unresolvable %s against `%T'\n"),
14684 input_bfd, input_section, rel->r_offset,
14686 h->elf.root.root.string);
14690 /* 16-bit fields in insns mostly have signed values, but a
14691 few insns have 16-bit unsigned values. Really, we should
14692 have different reloc types. */
14693 if (howto->complain_on_overflow != complain_overflow_dont
14694 && howto->dst_mask == 0xffff
14695 && (input_section->flags & SEC_CODE) != 0)
14697 enum complain_overflow complain = complain_overflow_signed;
14699 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14700 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14701 complain = complain_overflow_bitfield;
14702 else if (howto->rightshift == 0
14703 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14704 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14705 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14706 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14707 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14708 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
14709 complain = complain_overflow_unsigned;
14710 if (howto->complain_on_overflow != complain)
14712 alt_howto = *howto;
14713 alt_howto.complain_on_overflow = complain;
14714 howto = &alt_howto;
14718 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14719 rel->r_offset, relocation, addend);
14721 if (r != bfd_reloc_ok)
14723 char *more_info = NULL;
14724 const char *reloc_name = howto->name;
14726 if (reloc_dest != DEST_NORMAL)
14728 more_info = bfd_malloc (strlen (reloc_name) + 8);
14729 if (more_info != NULL)
14731 strcpy (more_info, reloc_name);
14732 strcat (more_info, (reloc_dest == DEST_OPD
14733 ? " (OPD)" : " (stub)"));
14734 reloc_name = more_info;
14738 if (r == bfd_reloc_overflow)
14743 && h->elf.root.type == bfd_link_hash_undefweak
14744 && howto->pc_relative)
14746 /* Assume this is a call protected by other code that
14747 detects the symbol is undefined. If this is the case,
14748 we can safely ignore the overflow. If not, the
14749 program is hosed anyway, and a little warning isn't
14755 if (!((*info->callbacks->reloc_overflow)
14756 (info, &h->elf.root, sym_name,
14757 reloc_name, orig_rel.r_addend,
14758 input_bfd, input_section, rel->r_offset)))
14763 info->callbacks->einfo
14764 (_("%P: %H: %s against `%T': error %d\n"),
14765 input_bfd, input_section, rel->r_offset,
14766 reloc_name, sym_name, (int) r);
14769 if (more_info != NULL)
14774 /* If we're emitting relocations, then shortly after this function
14775 returns, reloc offsets and addends for this section will be
14776 adjusted. Worse, reloc symbol indices will be for the output
14777 file rather than the input. Save a copy of the relocs for
14778 opd_entry_value. */
14779 if (is_opd && (info->emitrelocations || info->relocatable))
14782 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14783 rel = bfd_alloc (input_bfd, amt);
14784 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14785 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14788 memcpy (rel, relocs, amt);
14793 /* Adjust the value of any local symbols in opd sections. */
14796 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14797 const char *name ATTRIBUTE_UNUSED,
14798 Elf_Internal_Sym *elfsym,
14799 asection *input_sec,
14800 struct elf_link_hash_entry *h)
14802 struct _opd_sec_data *opd;
14809 opd = get_opd_info (input_sec);
14810 if (opd == NULL || opd->adjust == NULL)
14813 value = elfsym->st_value - input_sec->output_offset;
14814 if (!info->relocatable)
14815 value -= input_sec->output_section->vma;
14817 adjust = opd->adjust[value / 8];
14821 elfsym->st_value += adjust;
14825 /* Finish up dynamic symbol handling. We set the contents of various
14826 dynamic sections here. */
14829 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14830 struct bfd_link_info *info,
14831 struct elf_link_hash_entry *h,
14832 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14834 struct ppc_link_hash_table *htab;
14835 struct plt_entry *ent;
14836 Elf_Internal_Rela rela;
14839 htab = ppc_hash_table (info);
14843 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14844 if (ent->plt.offset != (bfd_vma) -1)
14846 /* This symbol has an entry in the procedure linkage
14847 table. Set it up. */
14848 if (!htab->elf.dynamic_sections_created
14849 || h->dynindx == -1)
14851 BFD_ASSERT (h->type == STT_GNU_IFUNC
14853 && (h->root.type == bfd_link_hash_defined
14854 || h->root.type == bfd_link_hash_defweak));
14855 rela.r_offset = (htab->elf.iplt->output_section->vma
14856 + htab->elf.iplt->output_offset
14857 + ent->plt.offset);
14859 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14861 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14862 rela.r_addend = (h->root.u.def.value
14863 + h->root.u.def.section->output_offset
14864 + h->root.u.def.section->output_section->vma
14866 loc = (htab->elf.irelplt->contents
14867 + (htab->elf.irelplt->reloc_count++
14868 * sizeof (Elf64_External_Rela)));
14872 rela.r_offset = (htab->elf.splt->output_section->vma
14873 + htab->elf.splt->output_offset
14874 + ent->plt.offset);
14875 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14876 rela.r_addend = ent->addend;
14877 loc = (htab->elf.srelplt->contents
14878 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14879 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14881 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14883 if (!htab->opd_abi)
14885 if (!h->def_regular)
14887 /* Mark the symbol as undefined, rather than as
14888 defined in glink. Leave the value if there were
14889 any relocations where pointer equality matters
14890 (this is a clue for the dynamic linker, to make
14891 function pointer comparisons work between an
14892 application and shared library), otherwise set it
14894 sym->st_shndx = SHN_UNDEF;
14895 if (!h->pointer_equality_needed)
14897 else if (!h->ref_regular_nonweak)
14899 /* This breaks function pointer comparisons, but
14900 that is better than breaking tests for a NULL
14901 function pointer. */
14910 /* This symbol needs a copy reloc. Set it up. */
14912 if (h->dynindx == -1
14913 || (h->root.type != bfd_link_hash_defined
14914 && h->root.type != bfd_link_hash_defweak)
14915 || htab->relbss == NULL)
14918 rela.r_offset = (h->root.u.def.value
14919 + h->root.u.def.section->output_section->vma
14920 + h->root.u.def.section->output_offset);
14921 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14923 loc = htab->relbss->contents;
14924 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14925 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14931 /* Used to decide how to sort relocs in an optimal manner for the
14932 dynamic linker, before writing them out. */
14934 static enum elf_reloc_type_class
14935 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14936 const asection *rel_sec,
14937 const Elf_Internal_Rela *rela)
14939 enum elf_ppc64_reloc_type r_type;
14940 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14942 if (rel_sec == htab->elf.irelplt)
14943 return reloc_class_ifunc;
14945 r_type = ELF64_R_TYPE (rela->r_info);
14948 case R_PPC64_RELATIVE:
14949 return reloc_class_relative;
14950 case R_PPC64_JMP_SLOT:
14951 return reloc_class_plt;
14953 return reloc_class_copy;
14955 return reloc_class_normal;
14959 /* Finish up the dynamic sections. */
14962 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14963 struct bfd_link_info *info)
14965 struct ppc_link_hash_table *htab;
14969 htab = ppc_hash_table (info);
14973 dynobj = htab->elf.dynobj;
14974 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14976 if (htab->elf.dynamic_sections_created)
14978 Elf64_External_Dyn *dyncon, *dynconend;
14980 if (sdyn == NULL || htab->elf.sgot == NULL)
14983 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14984 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14985 for (; dyncon < dynconend; dyncon++)
14987 Elf_Internal_Dyn dyn;
14990 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14997 case DT_PPC64_GLINK:
14999 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15000 /* We stupidly defined DT_PPC64_GLINK to be the start
15001 of glink rather than the first entry point, which is
15002 what ld.so needs, and now have a bigger stub to
15003 support automatic multiple TOCs. */
15004 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15008 s = bfd_get_section_by_name (output_bfd, ".opd");
15011 dyn.d_un.d_ptr = s->vma;
15015 if (htab->do_multi_toc && htab->multi_toc_needed)
15016 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15019 case DT_PPC64_OPDSZ:
15020 s = bfd_get_section_by_name (output_bfd, ".opd");
15023 dyn.d_un.d_val = s->size;
15027 s = htab->elf.splt;
15028 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15032 s = htab->elf.srelplt;
15033 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15037 dyn.d_un.d_val = htab->elf.srelplt->size;
15041 /* Don't count procedure linkage table relocs in the
15042 overall reloc count. */
15043 s = htab->elf.srelplt;
15046 dyn.d_un.d_val -= s->size;
15050 /* We may not be using the standard ELF linker script.
15051 If .rela.plt is the first .rela section, we adjust
15052 DT_RELA to not include it. */
15053 s = htab->elf.srelplt;
15056 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15058 dyn.d_un.d_ptr += s->size;
15062 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15066 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15068 /* Fill in the first entry in the global offset table.
15069 We use it to hold the link-time TOCbase. */
15070 bfd_put_64 (output_bfd,
15071 elf_gp (output_bfd) + TOC_BASE_OFF,
15072 htab->elf.sgot->contents);
15074 /* Set .got entry size. */
15075 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15078 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15080 /* Set .plt entry size. */
15081 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15082 = PLT_ENTRY_SIZE (htab);
15085 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15086 brlt ourselves if emitrelocations. */
15087 if (htab->brlt != NULL
15088 && htab->brlt->reloc_count != 0
15089 && !_bfd_elf_link_output_relocs (output_bfd,
15091 elf_section_data (htab->brlt)->rela.hdr,
15092 elf_section_data (htab->brlt)->relocs,
15096 if (htab->glink != NULL
15097 && htab->glink->reloc_count != 0
15098 && !_bfd_elf_link_output_relocs (output_bfd,
15100 elf_section_data (htab->glink)->rela.hdr,
15101 elf_section_data (htab->glink)->relocs,
15105 if (htab->glink_eh_frame != NULL
15106 && htab->glink_eh_frame->size != 0)
15110 asection *stub_sec;
15112 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15113 for (stub_sec = htab->params->stub_bfd->sections;
15115 stub_sec = stub_sec->next)
15116 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15122 /* Offset to stub section. */
15123 val = (stub_sec->output_section->vma
15124 + stub_sec->output_offset);
15125 val -= (htab->glink_eh_frame->output_section->vma
15126 + htab->glink_eh_frame->output_offset
15127 + (p - htab->glink_eh_frame->contents));
15128 if (val + 0x80000000 > 0xffffffff)
15130 info->callbacks->einfo
15131 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15135 bfd_put_32 (dynobj, val, p);
15137 /* stub section size. */
15139 /* Augmentation. */
15144 if (htab->glink != NULL && htab->glink->size != 0)
15150 /* Offset to .glink. */
15151 val = (htab->glink->output_section->vma
15152 + htab->glink->output_offset
15154 val -= (htab->glink_eh_frame->output_section->vma
15155 + htab->glink_eh_frame->output_offset
15156 + (p - htab->glink_eh_frame->contents));
15157 if (val + 0x80000000 > 0xffffffff)
15159 info->callbacks->einfo
15160 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15161 htab->glink->name);
15164 bfd_put_32 (dynobj, val, p);
15168 /* Augmentation. */
15174 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15175 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15176 htab->glink_eh_frame,
15177 htab->glink_eh_frame->contents))
15181 /* We need to handle writing out multiple GOT sections ourselves,
15182 since we didn't add them to DYNOBJ. We know dynobj is the first
15184 while ((dynobj = dynobj->link.next) != NULL)
15188 if (!is_ppc64_elf (dynobj))
15191 s = ppc64_elf_tdata (dynobj)->got;
15194 && s->output_section != bfd_abs_section_ptr
15195 && !bfd_set_section_contents (output_bfd, s->output_section,
15196 s->contents, s->output_offset,
15199 s = ppc64_elf_tdata (dynobj)->relgot;
15202 && s->output_section != bfd_abs_section_ptr
15203 && !bfd_set_section_contents (output_bfd, s->output_section,
15204 s->contents, s->output_offset,
15212 #include "elf64-target.h"
15214 /* FreeBSD support */
15216 #undef TARGET_LITTLE_SYM
15217 #undef TARGET_LITTLE_NAME
15219 #undef TARGET_BIG_SYM
15220 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15221 #undef TARGET_BIG_NAME
15222 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15225 #define ELF_OSABI ELFOSABI_FREEBSD
15228 #define elf64_bed elf64_powerpc_fbsd_bed
15230 #include "elf64-target.h"